From 2ef939c1b8e048cc2f11cf16fb6da844703ef3c4 Mon Sep 17 00:00:00 2001
From: chiteroman <98092901+chiteroman@users.noreply.github.com>
Date: Mon, 22 Jan 2024 23:01:38 +0100
Subject: [PATCH] v15.3

---
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 ...obust_against_copying_comparators.pass.cpp |   218 +
 ...t_cpp20_hostile_iterators.compile.pass.cpp |   220 +
 .../libcxx/algorithms/sort_stability.pass.cpp |    99 +
 .../nothrow_forward_iterator.compile.pass.cpp |    27 +
 .../nothrow_forward_range.compile.pass.cpp    |    29 +
 .../nothrow_input_iterator.compile.pass.cpp   |    30 +
 .../nothrow_input_range.compile.pass.cpp      |    32 +
 .../nothrow_sentinel_for.compile.pass.cpp     |    35 +
 .../test/libcxx/algorithms/version.pass.cpp   |    23 +
 .../assertions/assertions_disabled.pass.cpp   |    24 +
 ...tomize_verbose_abort.compile-time.pass.cpp |    27 +
 ...customize_verbose_abort.link-time.pass.cpp |    26 +
 .../assertions/default_verbose_abort.pass.cpp |    26 +
 ...precated-link-time-custom-handler.pass.cpp |    26 +
 .../headers_declare_verbose_abort.sh.cpp      |   785 +
 .../assertions/single_expression.sh.cpp       |    33 +
 .../atomics/atomics.align/align.pass.cpp      |   111 +
 .../atomics/atomics.flag/init_bool.pass.cpp   |    43 +
 .../memory_order.underlying_type.pass.cpp     |    34 +
 .../incompatible_with_stdatomic.verify.cpp    |    22 +
 .../atomic_fetch_add.verify.cpp               |    74 +
 .../atomic_fetch_add_explicit.verify.cpp      |    77 +
 .../atomic_fetch_sub.verify.cpp               |    74 +
 .../atomic_fetch_sub_explicit.verify.cpp      |    77 +
 .../test/libcxx/atomics/bit-int.verify.cpp    |    27 +
 .../diagnose_invalid_memory_order.verify.cpp  |   128 +
 .../dont_hijack_header.compile.pass.cpp       |    23 +
 .../test/libcxx/atomics/version.pass.cpp      |    23 +
 .../cpp/libcxx/test/libcxx/clang_tidy.sh.cpp  |   276 +
 .../associative/map/at.abort.pass.cpp         |    36 +
 .../associative/map/at.const.abort.pass.cpp   |    36 +
 .../associative/map/version.pass.cpp          |    23 +
 ...non_const_comparator.incomplete.verify.cpp |    59 +
 .../non_const_comparator.verify.cpp           |    50 +
 .../associative/set/version.pass.cpp          |    23 +
 .../tree_balance_after_insert.pass.cpp        |  1622 ++
 .../tree_key_value_traits.pass.cpp            |    60 +
 .../associative/tree_left_rotate.pass.cpp     |   104 +
 .../associative/tree_remove.pass.cpp          |  1654 ++
 .../associative/tree_right_rotate.pass.cpp    |   104 +
 .../container.adaptors/queue/version.pass.cpp |    23 +
 .../container.adaptors/stack/version.pass.cpp |    23 +
 .../containers/gnu_cxx/hash_map.pass.cpp      |    38 +
 .../gnu_cxx/hash_map_name_lookup.pass.cpp     |    39 +
 .../containers/gnu_cxx/hash_set.pass.cpp      |    38 +
 .../gnu_cxx/hash_set_name_lookup.pass.cpp     |    38 +
 .../array/array.zero/assert.back.pass.cpp     |    37 +
 .../array/array.zero/assert.front.pass.cpp    |    37 +
 .../array.zero/assert.subscript.pass.cpp      |    41 +
 .../sequences/array/triviality.pass.cpp       |    54 +
 .../sequences/array/version.pass.cpp          |    23 +
 .../deque/assert.pop_back.empty.pass.cpp      |    29 +
 .../sequences/deque/incomplete.pass.cpp       |    35 +
 .../deque/spare_block_handling.pass.cpp       |   282 +
 .../sequences/deque/version.pass.cpp          |    23 +
 .../sequences/forwardlist/version.pass.cpp    |    23 +
 .../list/list.cons/debug.copy.pass.cpp        |    28 +
 .../assert.erase_iter.end.pass.cpp            |    29 +
 .../assert.pop_back.empty.pass.cpp            |    35 +
 .../list.modifiers/debug.emplace.pass.cpp     |    34 +
 .../list.modifiers/debug.erase.iter.pass.cpp  |    28 +
 .../debug.erase.iter_iter.pass.cpp            |    57 +
 .../debug.insert.iter_iter_iter.pass.cpp      |    29 +
 .../debug.insert.iter_rvalue.pass.cpp         |    27 +
 .../debug.insert.iter_size_value.pass.cpp     |    27 +
 .../debug.insert.iter_value.pass.cpp          |    28 +
 .../list.ops/debug.splice.pos_list.pass.cpp   |    26 +
 .../debug.splice.pos_list_iter.pass.cpp       |    28 +
 .../debug.splice.pos_list_iter_iter.pass.cpp  |    28 +
 .../sequences/list/version.pass.cpp           |    23 +
 .../trivial_for_purposes_of_call.pass.cpp     |    57 +
 .../containers/sequences/vector/asan.pass.cpp |    68 +
 .../sequences/vector/asan_throw.pass.cpp      |   236 +
 .../vector/assert.back.empty.pass.cpp         |    43 +
 .../vector/assert.cback.empty.pass.cpp        |    39 +
 .../vector/assert.cfront.empty.pass.cpp       |    39 +
 .../vector/assert.cindex.oob.pass.cpp         |    42 +
 .../vector/assert.front.empty.pass.cpp        |    44 +
 .../vector/assert.index.oob.pass.cpp          |    42 +
 .../vector/assert.pop_back.empty.pass.cpp     |    29 +
 .../vector/const_value_type.pass.cpp          |    25 +
 .../vector/debug.iterator.add.pass.cpp        |    46 +
 .../vector/debug.iterator.compare.pass.cpp    |    39 +
 .../vector/debug.iterator.decrement.pass.cpp  |    44 +
 .../debug.iterator.dereference.pass.cpp       |    39 +
 .../vector/debug.iterator.increment.pass.cpp  |    44 +
 .../vector/debug.iterator.index.pass.cpp      |    42 +
 .../vector/debug.iterator.subtract.pass.cpp   |    39 +
 ...eption_safety_exceptions_disabled.pass.cpp |    56 +
 .../vector/invalid_allocator.verify.cpp       |    28 +
 .../vector/robust_against_adl.pass.cpp        |    49 +
 .../vector.cons/construct_iter_iter.pass.cpp  |    56 +
 .../construct_iter_iter_alloc.pass.cpp        |    59 +
 .../sequences/vector/version.pass.cpp         |    23 +
 .../unord/key_value_traits.pass.cpp           |    60 +
 .../containers/unord/next_pow2.pass.cpp       |    88 +
 .../containers/unord/next_prime.pass.cpp      |    54 +
 ...non_const_comparator.incomplete.verify.cpp |    59 +
 .../unord/non_const_comparator.verify.cpp     |    59 +
 .../unord/unord.map/assert.bucket.pass.cpp    |    29 +
 .../unord.map/assert.bucket_size.pass.cpp     |    33 +
 .../unord.map/assert.max_load_factor.pass.cpp |    34 +
 .../unord/unord.map/at.abort.pass.cpp         |    33 +
 .../unord/unord.map/at.const.abort.pass.cpp   |    33 +
 .../debug.insert.hint_const_lvalue.pass.cpp   |    39 +
 .../debug.insert.hint_rvalue.pass.cpp         |    34 +
 .../debug.iterator.dereference.pass.cpp       |    41 +
 .../debug.iterator.increment.pass.cpp         |    46 +
 .../debug.local_iterator.dereference.pass.cpp |    39 +
 .../debug.local_iterator.increment.pass.cpp   |    49 +
 .../unord/unord.map/debug.swap.pass.cpp       |    38 +
 .../debug.erase.iter.pass.cpp                 |    43 +
 .../debug.erase.iter_iter.pass.cpp            |    64 +
 .../unord/unord.map/version.pass.cpp          |    23 +
 .../unord.multimap/assert.bucket.pass.cpp     |    33 +
 .../assert.bucket_size.pass.cpp               |    33 +
 .../assert.max_load_factor.pass.cpp           |    34 +
 .../debug.insert.hint_const_lvalue.pass.cpp   |    32 +
 .../debug.insert.hint_rvalue.pass.cpp         |    33 +
 .../debug.iterator.dereference.pass.cpp       |    41 +
 .../debug.iterator.increment.pass.cpp         |    46 +
 .../debug.local_iterator.dereference.pass.cpp |    39 +
 .../debug.local_iterator.increment.pass.cpp   |    50 +
 .../unord/unord.multimap/debug.swap.pass.cpp  |    38 +
 .../debug.erase.iter.pass.cpp                 |    43 +
 .../debug.erase.iter_iter.pass.cpp            |    64 +
 .../unord.multiset/assert.bucket.pass.cpp     |    32 +
 .../assert.bucket_size.pass.cpp               |    32 +
 .../assert.max_load_factor.pass.cpp           |    33 +
 .../unord.multiset/debug.erase.iter.pass.cpp  |    41 +
 .../debug.erase.iter_iter.pass.cpp            |    60 +
 .../debug.insert.hint_const_lvalue.pass.cpp   |    32 +
 .../debug.iterator.dereference.pass.cpp       |    39 +
 .../debug.iterator.increment.pass.cpp         |    47 +
 .../debug.local_iterator.dereference.pass.cpp |    41 +
 .../debug.local_iterator.increment.pass.cpp   |    51 +
 .../unord/unord.multiset/debug.swap.pass.cpp  |    37 +
 .../unord/unord.set/assert.bucket.pass.cpp    |    32 +
 .../unord.set/assert.bucket_size.pass.cpp     |    32 +
 .../unord.set/assert.max_load_factor.pass.cpp |    34 +
 .../unord/unord.set/debug.erase.iter.pass.cpp |    41 +
 .../unord.set/debug.erase.iter_iter.pass.cpp  |    60 +
 .../debug.insert.hint_const_lvalue.pass.cpp   |    32 +
 .../debug.iterator.dereference.pass.cpp       |    39 +
 .../debug.iterator.increment.pass.cpp         |    47 +
 .../debug.local_iterator.dereference.pass.cpp |    41 +
 .../debug.local_iterator.increment.pass.cpp   |    49 +
 .../unord/unord.set/debug.swap.pass.cpp       |    37 +
 .../missing_hash_specialization.fail.cpp      |    71 +
 .../unord/unord.set/version.pass.cpp          |    23 +
 .../debug.iterator-indexing.pass.cpp          |    97 +
 .../span.cons/assert.iter_sent.pass.cpp       |    48 +
 .../span.cons/assert.iter_size.pass.cpp       |    37 +
 .../span.cons/assert.other_span.pass.cpp      |    33 +
 .../span.cons/assert.range.pass.cpp           |    32 +
 .../views.span/span.elem/assert.back.pass.cpp |    39 +
 .../span.elem/assert.front.pass.cpp           |    39 +
 .../span.elem/assert.op_idx.pass.cpp          |    39 +
 .../views.span/span.sub/assert.first.pass.cpp |    40 +
 .../views.span/span.sub/assert.last.pass.cpp  |    40 +
 .../span.sub/assert.subspan.pass.cpp          |    57 +
 .../debug/containers.multithread.pass.cpp     |    65 +
 .../associative_containers.pass.cpp           |    60 +
 .../sequence_container_iterators.pass.cpp     |   333 +
 .../libcxx/debug/containers/string.pass.cpp   |    92 +
 .../containers/unord_containers.pass.cpp      |    62 +
 .../debug.assertions-enabled.compile.pass.cpp |    17 +
 .../test/libcxx/debug/extern-templates.sh.cpp |    54 +
 .../auto.ptr/auto_ptr.cxx1z.pass.cpp          |    31 +
 .../auto_ptr.depr_in_cxx11.verify.cpp         |    35 +
 .../depr/depr.c.headers/ciso646.pass.cpp      |    21 +
 .../depr/depr.c.headers/complex.h.pass.cpp    |    23 +
 .../depr/depr.c.headers/extern_c.pass.cpp     |    50 +
 .../libcxx/depr/depr.c.headers/fenv.pass.cpp  |    17 +
 .../depr/depr.c.headers/locale_h.pass.cpp     |    23 +
 .../depr.c.headers/math_h.compile.pass.cpp    |    26 +
 .../no_fgetpos_fsetpos.verify.cpp             |    20 +
 .../stdint_h.std_types_t.compile.pass.cpp     |   263 +
 .../stdint_h.xopen_source.compile.pass.cpp    |   260 +
 .../depr/depr.c.headers/tgmath_h.pass.cpp     |    25 +
 .../allocator.members/address.cxx2a.pass.cpp  |    49 +
 .../address.depr_in_cxx17.verify.cpp          |    33 +
 .../allocator.members/allocate.cxx2a.pass.cpp |    93 +
 .../allocate.cxx2a.verify.cpp                 |    34 +
 .../allocate.depr_in_cxx17.verify.cpp         |    29 +
 .../construct.cxx2a.pass.cpp                  |   152 +
 .../allocator.members/max_size.cxx2a.pass.cpp |    37 +
 .../allocator_types.cxx2a.pass.cpp            |    51 +
 .../typedefs.depr_in_cxx17.verify.cpp         |   125 +
 .../adaptors.depr_in_cxx11.verify.cpp         |    55 +
 .../depr.adaptors.cxx1z.pass.cpp              |    67 +
 .../depr/depr.str.strstreams/version.pass.cpp |    25 +
 .../enable_removed_cpp17_features.pass.cpp    |    29 +
 .../get_unexpected.pass.cpp                   |    44 +
 .../set_unexpected.pass.cpp                   |    40 +
 .../exception.unexpected/unexpected.pass.cpp  |    31 +
 .../unexpected_disabled_cpp17.fail.cpp        |    24 +
 .../assertions/version_cassert.pass.cpp       |    23 +
 .../diagnostics/errno/version_cerrno.pass.cpp |    21 +
 .../math_nodiscard_extensions.verify.cpp      |   156 +
 .../libcxx/diagnostics/nodiscard.pass.cpp     |    22 +
 .../nodiscard_aftercxx17.verify.cpp           |    24 +
 .../nodiscard_extensions.compile.pass.cpp     |   194 +
 .../nodiscard_extensions.verify.cpp           |   352 +
 ...nges.nodiscard_extensions.compile.pass.cpp |    93 +
 .../ranges.nodiscard_extensions.verify.cpp    |    90 +
 .../std.exceptions/version.pass.cpp           |    23 +
 .../diagnostics/syserr/version.pass.cpp       |    23 +
 ...w_adaptors.nodiscard_extensions.verify.cpp |    22 +
 .../libcxx/test/libcxx/double_include.sh.cpp  |   281 +
 .../header.algorithm.synop/includes.pass.cpp  |    23 +
 .../experimental/algorithms/version.pass.cpp  |    23 +
 .../fexperimental-library.compile.pass.cpp    |    31 +
 .../dialect_support.pass.cpp                  |    59 +
 .../support.coroutines/version.pass.cpp       |    23 +
 .../test/libcxx/experimental/lit.local.cfg    |     3 +
 .../assert.deallocate.pass.cpp                |    42 +
 .../construct_piecewise_pair.pass.cpp         |   179 +
 .../assert.deallocate.pass.cpp                |    45 +
 .../header_deque_libcpp_version.pass.cpp      |    25 +
 ...eader_forward_list_libcpp_version.pass.cpp |    25 +
 .../header_list_libcpp_version.pass.cpp       |    25 +
 .../header_map_libcpp_version.pass.cpp        |    25 +
 .../header_regex_libcpp_version.pass.cpp      |    26 +
 .../header_set_libcpp_version.pass.cpp        |    25 +
 .../header_string_libcpp_version.pass.cpp     |    25 +
 ...ader_unordered_map_libcpp_version.pass.cpp |    25 +
 ...ader_unordered_set_libcpp_version.pass.cpp |    25 +
 .../header_vector_libcpp_version.pass.cpp     |    25 +
 .../global_memory_resource_lifetime.pass.cpp  |    70 +
 .../new_delete_resource_lifetime.pass.cpp     |    62 +
 .../memory.resource.synop/version.pass.cpp    |    25 +
 .../hash/specializations.compile.fail.cpp     |    18 +
 .../extensions/hash/specializations.pass.cpp  |    36 +
 .../hash_map/const_iterator.compile.fail.cpp  |    19 +
 .../cpp/libcxx/test/libcxx/fuzzing/fuzz.h     |   145 +
 .../test/libcxx/fuzzing/make_heap.pass.cpp    |    27 +
 .../test/libcxx/fuzzing/nth_element.pass.cpp  |    42 +
 .../test/libcxx/fuzzing/partial_sort.pass.cpp |    40 +
 .../libcxx/fuzzing/partial_sort_copy.pass.cpp |    41 +
 .../test/libcxx/fuzzing/partition.pass.cpp    |    30 +
 .../libcxx/fuzzing/partition_copy.pass.cpp    |    65 +
 .../test/libcxx/fuzzing/pop_heap.pass.cpp     |    33 +
 .../test/libcxx/fuzzing/push_heap.pass.cpp    |    40 +
 .../test/libcxx/fuzzing/random.pass.cpp       |   194 +
 .../libcxx/test/libcxx/fuzzing/regex.pass.cpp |    46 +
 .../test/libcxx/fuzzing/search.pass.cpp       |    35 +
 .../libcxx/test/libcxx/fuzzing/sort.pass.cpp  |    27 +
 .../libcxx/fuzzing/stable_partition.pass.cpp  |    38 +
 .../test/libcxx/fuzzing/stable_sort.pass.cpp  |    39 +
 .../test/libcxx/fuzzing/unique.pass.cpp       |    54 +
 .../test/libcxx/fuzzing/unique_copy.pass.cpp  |    56 +
 .../libcxx/gdb/gdb_pretty_printer_test.py     |   131 +
 .../libcxx/gdb/gdb_pretty_printer_test.sh.cpp |   689 +
 .../libcxx/test/libcxx/include_as_c.sh.cpp    |    58 +
 .../algorithm.inclusions.compile.pass.cpp     |    26 +
 .../array.inclusions.compile.pass.cpp         |    29 +
 .../bitset.inclusions.compile.pass.cpp        |    29 +
 .../chrono.inclusions.compile.pass.cpp        |    28 +
 .../cinttypes.inclusions.compile.pass.cpp     |    26 +
 .../complex.h.inclusions.compile.pass.cpp     |    26 +
 .../coroutine.inclusions.compile.pass.cpp     |    28 +
 .../deque.inclusions.compile.pass.cpp         |    29 +
 .../filesystem.inclusions.compile.pass.cpp    |    29 +
 .../forward_list.inclusions.compile.pass.cpp  |    29 +
 .../ios.inclusions.compile.pass.cpp           |    28 +
 .../iostream.inclusions.compile.pass.cpp      |    37 +
 .../iterator.inclusions.compile.pass.cpp      |    29 +
 .../list.inclusions.compile.pass.cpp          |    29 +
 .../map.inclusions.compile.pass.cpp           |    29 +
 .../memory.inclusions.compile.pass.cpp        |    26 +
 .../optional.inclusions.compile.pass.cpp      |    28 +
 .../queue.inclusions.compile.pass.cpp         |    29 +
 .../random.inclusions.compile.pass.cpp        |    26 +
 .../ranges.inclusions.compile.pass.cpp        |    34 +
 .../regex.inclusions.compile.pass.cpp         |    31 +
 .../set.inclusions.compile.pass.cpp           |    29 +
 .../stack.inclusions.compile.pass.cpp         |    29 +
 .../string.inclusions.compile.pass.cpp        |    29 +
 .../string_view.inclusions.compile.pass.cpp   |    28 +
 .../system_error.inclusions.compile.pass.cpp  |    28 +
 .../tgmath.h.inclusions.compile.pass.cpp      |    29 +
 .../thread.inclusions.compile.pass.cpp        |    29 +
 .../tuple.inclusions.compile.pass.cpp         |    28 +
 .../typeindex.inclusions.compile.pass.cpp     |    26 +
 .../unordered_map.inclusions.compile.pass.cpp |    31 +
 .../unordered_set.inclusions.compile.pass.cpp |    31 +
 .../utility.inclusions.compile.pass.cpp       |    29 +
 .../valarray.inclusions.compile.pass.cpp      |    26 +
 .../variant.inclusions.compile.pass.cpp       |    28 +
 .../vector.inclusions.compile.pass.cpp        |    29 +
 .../c.files/version_ccstdio.pass.cpp          |    23 +
 .../c.files/version_cinttypes.pass.cpp        |    23 +
 .../fstreams/filebuf/traits_mismatch.fail.cpp |    35 +
 .../fstreams/fstream.close.pass.cpp           |    37 +
 .../fstream.cons/wchar_pointer.pass.cpp       |    49 +
 .../open_wchar_pointer.pass.cpp               |    55 +
 .../fstreams/ifstream.cons/test.dat           |     1 +
 .../ifstream.cons/wchar_pointer.pass.cpp      |    48 +
 .../open_wchar_pointer.pass.cpp               |    54 +
 .../fstreams/ifstream.members/test.dat        |     1 +
 .../ofstream.cons/wchar_pointer.pass.cpp      |    63 +
 .../open_wchar_pointer.pass.cpp               |    63 +
 .../fstreams/traits_mismatch.fail.cpp         |    44 +
 .../file.streams/fstreams/version.pass.cpp    |    23 +
 .../input.output/file.streams/lit.local.cfg   |     6 +
 .../last_write_time.pass.cpp                  |    99 +
 .../path.itr/assert.iterator.pass.cpp         |    48 +
 .../path.native.obs/string_alloc.pass.cpp     |   172 +
 .../class.path/path.req/is_pathable.pass.cpp  |   107 +
 .../filesystems/convert_file_time.pass.cpp    |   308 +
 .../input.output/filesystems/lit.local.cfg    |     4 +
 .../input.output/filesystems/version.pass.cpp |    23 +
 .../input.streams/traits_mismatch.fail.cpp    |    32 +
 .../input.streams/version.pass.cpp            |    23 +
 .../iostream.format/lit.local.cfg             |     6 +
 .../output.streams/traits_mismatch.fail.cpp   |    32 +
 .../output.streams/version.pass.cpp           |    23 +
 .../std.manip/version.pass.cpp                |    23 +
 .../iostream.forward/version.pass.cpp         |    23 +
 .../iostream.objects/lit.local.cfg            |     6 +
 .../iostream.objects/version.pass.cpp         |    23 +
 .../ios/iostate.flags/clear.abort.pass.cpp    |    43 +
 .../input.output/iostreams.base/lit.local.cfg |     6 +
 .../iostreams.base/version.pass.cpp           |    23 +
 .../input.output/stream.buffers/lit.local.cfg |     6 +
 .../stream.buffers/version.pass.cpp           |    23 +
 .../input.output/string.streams/lit.local.cfg |     6 +
 .../string.streams/traits_mismatch.fail.cpp   |    34 +
 .../string.streams/version.pass.cpp           |    23 +
 .../libcxx/iterators/assert.advance.pass.cpp  |    37 +
 .../libcxx/iterators/assert.next.pass.cpp     |    31 +
 .../libcxx/iterators/assert.prev.pass.cpp     |    37 +
 .../bounded_iter/arithmetic.pass.cpp          |   112 +
 .../bounded_iter/comparison.pass.cpp          |    77 +
 .../bounded_iter/dereference.pass.cpp         |    86 +
 .../bounded_iter/pointer_traits.pass.cpp      |    60 +
 .../bounded_iter/types.compile.pass.cpp       |    48 +
 .../iterators/contiguous_iterators.pass.cpp   |   265 +
 .../subsumption.compile.pass.cpp              |    29 +
 ...cy_bidirectional_iterator.compile.pass.cpp |   162 +
 .../legacy_forward_iterator.compile.pass.cpp  |   162 +
 .../legacy_input_iterator.compile.pass.cpp    |   162 +
 .../legacy_iterator.compile.pass.cpp          |   162 +
 ...cy_random_access_iterator.compile.pass.cpp |   162 +
 .../locale_dependent.compile.pass.cpp         |    50 +
 .../cpp20_iter_concepts.pass.cpp              |    92 +
 .../cpp20_iter_traits.compile.pass.cpp        |    34 +
 .../integer_like.compile.pass.cpp             |    51 +
 .../contiguous_iterator.verify.cpp            |    54 +
 .../iterators/iterator_with_data.pass.cpp     |    39 +
 .../reverse.iter.cmp/equal.pass.cpp           |    47 +
 .../reverse.iter.cmp/greater-equal.pass.cpp   |    47 +
 .../reverse.iter.cmp/greater.pass.cpp         |    47 +
 .../reverse.iter.cmp/less-equal.pass.cpp      |    47 +
 .../reverse.iter.cmp/less.pass.cpp            |    47 +
 .../reverse.iter.cmp/not-equal.pass.cpp       |    47 +
 .../assign.LWG3435.verify.cpp                 |    26 +
 .../reverse.iter.cons/ctor.default.pass.cpp   |    40 +
 .../ctor.iter.explicit.verify.cpp             |    23 +
 .../reverse.iter.cons/ctor.iter.pass.cpp      |    41 +
 .../ctor.reverse_iterator.LWG3435.verify.cpp  |    25 +
 .../reverse.iter.conv/base.pass.cpp           |    37 +
 .../reverse.iter.elem/arrow.pass.cpp          |   118 +
 .../reverse.iter.elem/bracket.pass.cpp        |    47 +
 .../reverse.iter.elem/dereference.pass.cpp    |    61 +
 .../decrement-assign.pass.cpp                 |    43 +
 .../increment-assign.pass.cpp                 |    43 +
 .../reverse.iter.nav/minus.pass.cpp           |    42 +
 .../reverse.iter.nav/plus.pass.cpp            |    42 +
 .../reverse.iter.nav/postdecrement.pass.cpp   |    43 +
 .../reverse.iter.nav/postincrement.pass.cpp   |    43 +
 .../reverse.iter.nav/predecrement.pass.cpp    |    43 +
 .../reverse.iter.nav/preincrement.pass.cpp    |    43 +
 .../reverse.iter.nonmember/minus.pass.cpp     |    59 +
 .../types.compile.pass.cpp                    |   106 +
 .../get_container.pass.cpp                    |    37 +
 .../bad_template_argument.verify.cpp          |    24 +
 .../ostreambuf.iter.ops/failed.pass.cpp       |    36 +
 .../libcxx/iterators/unwrap_iter.pass.cpp     |    63 +
 .../test/libcxx/iterators/version.pass.cpp    |    23 +
 .../language.support/cmp/version.pass.cpp     |    23 +
 .../language.support/cstdint/version.pass.cpp |    23 +
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 ...rator_concept_conformance.compile.pass.cpp |    51 +
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 ...ompare_copy_constructible.compile.fail.cpp |    30 +
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 .../associative/map/map.cons/default.pass.cpp |    56 +
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 ...nd_emplace_allocator_requirements.pass.cpp |    33 +
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 ...rator_concept_conformance.compile.pass.cpp |    75 +
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 .../depr/depr.str.strstreams/lit.local.cfg    |     2 +
 .../set.unexpected/get_unexpected.pass.cpp    |    44 +
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 .../unexpected_handler.pass.cpp               |    25 +
 .../unexpected/unexpected.pass.cpp            |    31 +
 .../diagnostics/assertions/cassert.pass.cpp   |    23 +
 .../nothing_to_do.pass.cpp                    |    13 +
 .../std/diagnostics/errno/cerrno.pass.cpp     |   347 +
 .../domain.error/domain_error.pass.cpp        |    45 +
 .../invalid_argument.pass.cpp                 |    45 +
 .../length.error/length_error.pass.cpp        |    45 +
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 .../out.of.range/out_of_range.pass.cpp        |    45 +
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 .../runtime.error/runtime_error.pass.cpp      |    45 +
 .../underflow.error/underflow_error.pass.cpp  |    45 +
 .../test/std/diagnostics/syserr/errc.pass.cpp |   107 +
 .../syserr/is_error_code_enum.pass.cpp        |    53 +
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 .../eq_error_code_error_code.pass.cpp         |   109 +
 .../syserr.errcat.derived/message.pass.cpp    |    37 +
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 ...ct_on_container_copy_construction.pass.cpp |    62 +
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 .../meta/meta.detect/detected_or.pass.cpp     |    41 +
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 ...rtible_element_type.explicit.ctor.pass.cpp |    29 +
 ...le_element_type.non-explicit.ctor.pass.cpp |    33 +
 ...ertible_propagate_const.copy_ctor.pass.cpp |    27 +
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 ...rator_concept_conformance.compile.pass.cpp |    41 +
 ...range_concept_conformance.compile.pass.cpp |    41 +
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 .../lexically_relative_and_proximate.pass.cpp |    92 +
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 .../path.generic.obs/named_overloads.pass.cpp |    81 +
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 .../path.member/path.modifiers/swap.pass.cpp  |    81 +
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 ...range_concept_conformance.compile.pass.cpp |    36 +
 .../filesystems/class.path/synop.pass.cpp     |    48 +
 ...range_concept_conformance.compile.pass.cpp |    40 +
 .../rec.dir.itr.members/copy.pass.cpp         |    79 +
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 .../rec.dir.itr.nonmembers/begin_end.pass.cpp |    63 +
 .../filesystems/fs.enum/check_bitmask_types.h |    75 +
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 .../filesystems/fs.enum/enum.perms.pass.cpp   |    65 +
 .../fs.error.report/tested_elsewhere.pass.cpp |    13 +
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 .../range.iter.ops.next/iterator.pass.cpp     |    49 +
 .../iterator_count.pass.cpp                   |    58 +
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 .../range.iter.ops.prev/iterator.pass.cpp     |    43 +
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 .../range.iter.ops/types.h                    |    60 +
 .../bidirectional_iterator_tag.pass.cpp       |    28 +
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 ...ctly_copyable.subsumption.compile.pass.cpp |    27 +
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 .../nothing_to_do.pass.cpp                    |    13 +
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 ...indirect_binary_predicate.compile.pass.cpp |    82 +
 ...rect_equivalence_relation.compile.pass.cpp |    97 +
 .../indirect_result_t.compile.pass.cpp        |    31 +
 ...ndirect_strict_weak_order.compile.pass.cpp |    97 +
 .../indirect_unary_predicate.compile.pass.cpp |    64 +
 .../indirectly_comparable.compile.pass.cpp    |    50 +
 ...y_regular_unary_invocable.compile.pass.cpp |    87 +
 ...ndirectly_unary_invocable.compile.pass.cpp |    87 +
 .../projected/projected.compile.pass.cpp      |    64 +
 .../input.iterators/nothing_to_do.pass.cpp    |    13 +
 .../incrementable_traits.compile.pass.cpp     |   238 +
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 ...ndirectly_readable_traits.compile.pass.cpp |   151 +
 .../readable.traits/iter_value_t.pass.cpp     |    73 +
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 .../iter_common_reference_t.compile.pass.cpp  |    58 +
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 .../iter_move.nodiscard.verify.cpp            |    35 +
 .../iterator.cust.move/iter_move.pass.cpp     |   195 +
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 .../iterator.cust.swap/iter_swap.pass.cpp     |   225 +
 .../unqualified_lookup_wrapper.h              |    83 +
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 .../iterators.general/gcc_workaround.pass.cpp |    22 +
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 ...rator_concept_conformance.compile.pass.cpp |    29 +
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 .../cmp/cmp.alg/weak_order.pass.cpp           |   513 +
 .../cmp.categories.pre/zero_type.verify.cpp   |    58 +
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 ...three_way_comparable_with.compile.pass.cpp |   226 +
 .../cmp/cmp.partialord/partialord.pass.cpp    |   188 +
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 .../cmp/cmp.strongord/strongord.pass.cpp      |   197 +
 .../cmp/cmp.weakord/weakord.pass.cpp          |   179 +
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 .../cstdint/cstdint.syn/cstdint.pass.cpp      |   300 +
 .../operator_bool.pass.cpp                    |    56 +
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 .../coroutine.handle.completion/done.pass.cpp |    43 +
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 .../coroutine.handle.hash/hash.pass.cpp       |    63 +
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 .../destroy.pass.cpp                          |    60 +
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 .../coroutine.traits/promise_type.pass.cpp    |    77 +
 .../suspend_always.pass.cpp                   |    74 +
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 .../end.to.end/await_result.pass.cpp          |    70 +
 .../end.to.end/bool_await_suspend.pass.cpp    |    70 +
 .../end.to.end/expected.pass.cpp              |    88 +
 .../end.to.end/fullexpr-dtor.pass.cpp         |   110 +
 .../end.to.end/generator.pass.cpp             |   161 +
 .../support.coroutines/end.to.end/go.pass.cpp |   174 +
 .../end.to.end/multishot_func.pass.cpp        |    88 +
 .../end.to.end/oneshot_func.pass.cpp          |    73 +
 .../support.dynamic/align_val_t.pass.cpp      |    40 +
 .../alloc.errors/bad.alloc/bad_alloc.pass.cpp |    30 +
 .../bad_array_new_length.pass.cpp             |    30 +
 .../new.handler/new_handler.pass.cpp          |    26 +
 .../set.new.handler/get_new_handler.pass.cpp  |    35 +
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 .../destroying_delete_t.pass.cpp              |    75 +
 .../destroying_delete_t_declaration.pass.cpp  |    52 +
 .../hardware_inference_size.compile.pass.cpp  |    17 +
 .../delete_align_val_t_replace.pass.cpp       |    96 +
 .../new.delete.array/new_align_val_t.pass.cpp |    86 +
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 .../new_align_val_t_nothrow_replace.pass.cpp  |    92 +
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 .../new.delete.array/new_size.verify.cpp      |    23 +
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 ..._array_calls_unsized_delete_array.pass.cpp |    61 +
 ...d_delete_array_fsizeddeallocation.pass.cpp |    81 +
 .../not_testable.pass.cpp                     |    13 +
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 .../delete_align_val_t_replace.pass.cpp       |    99 +
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 .../new.delete.single/new_size.verify.cpp     |    24 +
 .../new_size_align.verify.cpp                 |    27 +
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 .../new.delete.single/sized_delete11.pass.cpp |    61 +
 .../new.delete.single/sized_delete14.pass.cpp |    61 +
 ...sized_delete_calls_unsized_delete.pass.cpp |    50 +
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 .../support.dynamic/nothrow_t.fail.cpp        |    26 +
 .../support.dynamic/nothrow_t.pass.cpp        |    23 +
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 .../ptr.launder/launder.types.fail.cpp        |    36 +
 .../bad.exception/bad_exception.pass.cpp      |    30 +
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 .../support.general/nothing_to_do.pass.cpp    |    13 +
 .../support.initlist/include_cxx03.pass.cpp   |    21 +
 .../support.initlist.access/access.pass.cpp   |    63 +
 .../support.initlist.cons/default.pass.cpp    |    33 +
 .../support.initlist.range/begin_end.pass.cpp |    61 +
 .../support.initlist/types.pass.cpp           |    40 +
 .../support.limits/c.limits/cfloat.pass.cpp   |   185 +
 .../support.limits/c.limits/climits.pass.cpp  |    95 +
 .../limits/denorm.style/check_values.pass.cpp |    41 +
 .../limits/is_specialized.pass.cpp            |    53 +
 .../const_data_members.pass.cpp               |   210 +
 .../denorm_min.pass.cpp                       |    68 +
 .../numeric.limits.members/digits.pass.cpp    |    57 +
 .../numeric.limits.members/digits10.pass.cpp  |    61 +
 .../numeric.limits.members/epsilon.pass.cpp   |    58 +
 .../has_denorm.pass.cpp                       |    56 +
 .../has_denorm_loss.pass.cpp                  |    56 +
 .../has_infinity.pass.cpp                     |    56 +
 .../has_quiet_NaN.pass.cpp                    |    56 +
 .../has_signaling_NaN.pass.cpp                |    56 +
 .../numeric.limits.members/infinity.pass.cpp  |    62 +
 .../is_bounded.pass.cpp                       |    56 +
 .../numeric.limits.members/is_exact.pass.cpp  |    56 +
 .../numeric.limits.members/is_iec559.pass.cpp |    60 +
 .../is_integer.pass.cpp                       |    56 +
 .../numeric.limits.members/is_modulo.pass.cpp |    56 +
 .../numeric.limits.members/is_signed.pass.cpp |    56 +
 .../numeric.limits.members/lowest.pass.cpp    |    69 +
 .../numeric.limits.members/max.pass.cpp       |    69 +
 .../max_digits10.pass.cpp                     |    57 +
 .../max_exponent.pass.cpp                     |    57 +
 .../max_exponent10.pass.cpp                   |    57 +
 .../numeric.limits.members/min.pass.cpp       |    69 +
 .../min_exponent.pass.cpp                     |    57 +
 .../min_exponent10.pass.cpp                   |    57 +
 .../numeric.limits.members/quiet_NaN.pass.cpp |    77 +
 .../numeric.limits.members/radix.pass.cpp     |    57 +
 .../round_error.pass.cpp                      |    58 +
 .../round_style.pass.cpp                      |    56 +
 .../signaling_NaN.pass.cpp                    |    77 +
 .../tinyness_before.pass.cpp                  |    62 +
 .../numeric.limits.members/traps.pass.cpp     |    63 +
 .../limits/numeric.limits/default.pass.cpp    |    86 +
 .../numeric.special/nothing_to_do.pass.cpp    |    13 +
 .../limits/round.style/check_values.pass.cpp  |    37 +
 .../algorithm.version.compile.pass.cpp        |   287 +
 .../any.version.compile.pass.cpp              |    65 +
 .../array.version.compile.pass.cpp            |   123 +
 .../atomic.version.compile.pass.cpp           |   341 +
 .../barrier.version.compile.pass.cpp          |    76 +
 .../bit.version.compile.pass.cpp              |   179 +
 .../bitset.version.compile.pass.cpp           |    59 +
 .../charconv.version.compile.pass.cpp         |   107 +
 .../chrono.version.compile.pass.cpp           |    98 +
 .../cmath.version.compile.pass.cpp            |   170 +
 .../compare.version.compile.pass.cpp          |    74 +
 .../complex.version.compile.pass.cpp          |    95 +
 .../concepts.version.compile.pass.cpp         |    62 +
 .../coroutine.version.compile.pass.cpp        |    62 +
 .../cstddef.version.compile.pass.cpp          |    65 +
 .../cstdlib.version.compile.pass.cpp          |    65 +
 .../deque.version.compile.pass.cpp            |   152 +
 .../exception.version.compile.pass.cpp        |    65 +
 .../execution.version.compile.pass.cpp        |    84 +
 .../expected.version.compile.pass.cpp         |    59 +
 .../filesystem.version.compile.pass.cpp       |   124 +
 .../format.version.compile.pass.cpp           |    76 +
 .../forward_list.version.compile.pass.cpp     |   209 +
 .../functional.version.compile.pass.cpp       |   390 +
 .../iomanip.version.compile.pass.cpp          |    70 +
 .../istream.version.compile.pass.cpp          |    76 +
 .../iterator.version.compile.pass.cpp         |   243 +
 .../latch.version.compile.pass.cpp            |    76 +
 .../limits.version.compile.pass.cpp           |    74 +
 .../list.version.compile.pass.cpp             |   209 +
 .../locale.version.compile.pass.cpp           |    76 +
 .../map.version.compile.pass.cpp              |   275 +
 .../memory.version.compile.pass.cpp           |   539 +
 .../memory_resource.version.compile.pass.cpp  |    92 +
 .../memory_resource.version.pass.cpp          |    66 +
 .../mutex.version.compile.pass.cpp            |    67 +
 .../new.version.compile.pass.cpp              |   152 +
 .../numbers.version.compile.pass.cpp          |    62 +
 .../numeric.version.compile.pass.cpp          |   197 +
 .../optional.version.compile.pass.cpp         |    66 +
 .../ostream.version.compile.pass.cpp          |    76 +
 .../queue.version.compile.pass.cpp            |    89 +
 .../ranges.version.compile.pass.cpp           |   212 +
 .../regex.version.compile.pass.cpp            |    67 +
 .../scoped_allocator.version.compile.pass.cpp |    65 +
 .../semaphore.version.compile.pass.cpp        |    76 +
 .../set.version.compile.pass.cpp              |   245 +
 .../shared_mutex.version.compile.pass.cpp     |   142 +
 .../source_location.version.compile.pass.cpp  |    74 +
 .../source_location.version.pass.cpp          |    75 +
 .../span.version.compile.pass.cpp             |    62 +
 .../stack.version.compile.pass.cpp            |    89 +
 .../stdatomic.h.version.compile.pass.cpp      |    61 +
 .../string.version.compile.pass.cpp           |   357 +
 .../string_view.version.compile.pass.cpp      |   183 +
 .../thread.version.compile.pass.cpp           |    76 +
 .../tuple.version.compile.pass.cpp            |   218 +
 .../type_traits.version.compile.pass.cpp      |   707 +
 .../typeinfo.version.compile.pass.cpp         |    65 +
 .../unordered_map.version.compile.pass.cpp    |   269 +
 .../unordered_set.version.compile.pass.cpp    |   239 +
 .../utility.version.compile.pass.cpp          |   347 +
 .../variant.version.compile.pass.cpp          |    65 +
 .../vector.version.compile.pass.cpp           |   209 +
 .../version.version.compile.pass.cpp          |  4980 ++++
 .../support.limits/version.pass.cpp           |    20 +
 .../support.rtti/bad.cast/bad_cast.pass.cpp   |    30 +
 .../bad.typeid/bad_typeid.pass.cpp            |    30 +
 .../support.rtti/type.info/type_info.pass.cpp |    45 +
 .../type.info/type_info_hash.pass.cpp         |    28 +
 .../support.runtime/csetjmp.pass.cpp          |    28 +
 .../support.runtime/csignal.pass.cpp          |    61 +
 .../support.runtime/cstdarg.pass.cpp          |    39 +
 .../support.runtime/cstdbool.pass.cpp         |    35 +
 .../cstdlib.aligned_alloc.compile.pass.cpp    |    27 +
 .../support.runtime/cstdlib.pass.cpp          |   153 +
 .../support.runtime/ctime.pass.cpp            |    49 +
 .../ctime.timespec.compile.pass.cpp           |    31 +
 .../support.srcloc/general.pass.cpp           |    85 +
 .../support.start.term/quick_exit.pass.cpp    |    27 +
 .../support.types/byte.pass.cpp               |    35 +
 .../support.types/byteops/and.assign.pass.cpp |    40 +
 .../support.types/byteops/and.pass.cpp        |    32 +
 .../byteops/enum_direct_init.pass.cpp         |    19 +
 .../byteops/lshift.assign.compile.fail.cpp    |    29 +
 .../byteops/lshift.assign.pass.cpp            |    37 +
 .../byteops/lshift.compile.fail.cpp           |    24 +
 .../support.types/byteops/lshift.pass.cpp     |    31 +
 .../support.types/byteops/not.pass.cpp        |    28 +
 .../support.types/byteops/or.assign.pass.cpp  |    41 +
 .../support.types/byteops/or.pass.cpp         |    32 +
 .../byteops/rshift.assign.compile.fail.cpp    |    29 +
 .../byteops/rshift.assign.pass.cpp            |    36 +
 .../byteops/rshift.compile.fail.cpp           |    24 +
 .../support.types/byteops/rshift.pass.cpp     |    38 +
 .../byteops/to_integer.compile.fail.cpp       |    24 +
 .../support.types/byteops/to_integer.pass.cpp |    33 +
 .../support.types/byteops/xor.assign.pass.cpp |    40 +
 .../support.types/byteops/xor.pass.cpp        |    32 +
 .../support.types/cstddef.compile.pass.cpp    |    46 +
 .../max_align_t.compile.pass.cpp              |    30 +
 .../support.types/null.pass.cpp               |    21 +
 .../support.types/nullptr_t.pass.cpp          |    91 +
 .../nullptr_t_integral_cast.compile.fail.cpp  |    18 +
 .../nullptr_t_integral_cast.pass.cpp          |    27 +
 .../support.types/offsetof.pass.cpp           |    29 +
 .../support.types/ptrdiff_t.pass.cpp          |    30 +
 .../support.types/size_t.pass.cpp             |    30 +
 .../cpo.compile.pass.cpp                      |    98 +
 .../niebloid.compile.pass.cpp                 |   188 +
 .../expos.only.func/synth_three_way.pass.cpp  |   183 +
 .../localization/c.locales/clocale.pass.cpp   |    52 +
 .../test/std/localization/lit.local.cfg       |     3 +
 .../locale.collate.byname/compare.pass.cpp    |   108 +
 .../locale.collate.byname/hash.pass.cpp       |    50 +
 .../locale.collate.byname/transform.pass.cpp  |    63 +
 .../locale.collate.byname/types.pass.cpp      |    51 +
 .../locale.collate/ctor.pass.cpp              |    73 +
 .../locale.collate.members/compare.pass.cpp   |    57 +
 .../locale.collate.members/hash.pass.cpp      |    47 +
 .../locale.collate.members/transform.pass.cpp |    38 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.collate/types.pass.cpp             |    56 +
 .../category.ctype/ctype_base.pass.cpp        |    76 +
 .../facet.ctype.char.dtor/dtor.pass.cpp       |    44 +
 .../facet.ctype.char.members/ctor.pass.cpp    |    53 +
 .../facet.ctype.char.members/is_1.pass.cpp    |    62 +
 .../facet.ctype.char.members/is_many.pass.cpp |   121 +
 .../narrow_1.pass.cpp                         |    36 +
 .../narrow_many.pass.cpp                      |    41 +
 .../facet.ctype.char.members/scan_is.pass.cpp |    47 +
 .../scan_not.pass.cpp                         |    47 +
 .../facet.ctype.char.members/table.pass.cpp   |    36 +
 .../tolower_1.pass.cpp                        |    36 +
 .../tolower_many.pass.cpp                     |    39 +
 .../toupper_1.pass.cpp                        |    36 +
 .../toupper_many.pass.cpp                     |    39 +
 .../facet.ctype.char.members/widen_1.pass.cpp |    36 +
 .../widen_many.pass.cpp                       |    41 +
 .../classic_table.pass.cpp                    |    74 +
 .../table_size.pass.cpp                       |    31 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../facet.ctype.special/types.pass.cpp        |    42 +
 ...ame_char16_t_char.depr_in_cxx20.verify.cpp |    29 +
 ...ame_char32_t_char.depr_in_cxx20.verify.cpp |    29 +
 .../locale.codecvt.byname/ctor_char.pass.cpp  |    76 +
 .../ctor_char16_t.pass.cpp                    |    76 +
 .../ctor_char16_t_char8_t.pass.cpp            |    79 +
 .../ctor_char32_t.pass.cpp                    |    76 +
 .../ctor_char32_t_char8_t.pass.cpp            |    79 +
 .../ctor_wchar_t.pass.cpp                     |    78 +
 .../locale.codecvt/codecvt_base.pass.cpp      |    30 +
 ...cvt_char16_t_char.depr_in_cxx20.verify.cpp |    29 +
 ...cvt_char32_t_char.depr_in_cxx20.verify.cpp |    29 +
 .../locale.codecvt/ctor_char.pass.cpp         |    55 +
 .../locale.codecvt/ctor_char16_t.pass.cpp     |    58 +
 .../ctor_char16_t_char8_t.pass.cpp            |    54 +
 .../locale.codecvt/ctor_char32_t.pass.cpp     |    58 +
 .../ctor_char32_t_char8_t.pass.cpp            |    54 +
 .../locale.codecvt/ctor_wchar_t.pass.cpp      |    57 +
 .../char16_t_always_noconv.pass.cpp           |    32 +
 .../char16_t_char8_t_always_noconv.pass.cpp   |    30 +
 .../char16_t_char8_t_encoding.pass.cpp        |    30 +
 .../char16_t_char8_t_in.pass.cpp              |    40 +
 .../char16_t_char8_t_length.pass.cpp          |    35 +
 .../char16_t_char8_t_max_length.pass.cpp      |    30 +
 .../char16_t_char8_t_out.pass.cpp             |    41 +
 .../char16_t_char8_t_unshift.pass.cpp         |    34 +
 .../char16_t_encoding.pass.cpp                |    32 +
 .../char16_t_in.pass.cpp                      |    51 +
 .../char16_t_length.pass.cpp                  |    43 +
 .../char16_t_max_length.pass.cpp              |    32 +
 .../char16_t_out.pass.cpp                     |    56 +
 .../char16_t_unshift.pass.cpp                 |    39 +
 .../char32_t_always_noconv.pass.cpp           |    32 +
 .../char32_t_char8_t_always_noconv.pass.cpp   |    30 +
 .../char32_t_char8_t_encoding.pass.cpp        |    30 +
 .../char32_t_char8_t_in.pass.cpp              |    40 +
 .../char32_t_char8_t_length.pass.cpp          |    35 +
 .../char32_t_char8_t_max_length.pass.cpp      |    30 +
 .../char32_t_char8_t_out.pass.cpp             |    41 +
 .../char32_t_char8_t_unshift.pass.cpp         |    34 +
 .../char32_t_encoding.pass.cpp                |    32 +
 .../char32_t_in.pass.cpp                      |    51 +
 .../char32_t_length.pass.cpp                  |    43 +
 .../char32_t_max_length.pass.cpp              |    32 +
 .../char32_t_out.pass.cpp                     |    56 +
 .../char32_t_unshift.pass.cpp                 |    39 +
 .../char_always_noconv.pass.cpp               |    29 +
 .../char_encoding.pass.cpp                    |    29 +
 .../locale.codecvt.members/char_in.pass.cpp   |    41 +
 .../char_length.pass.cpp                      |    35 +
 .../char_max_length.pass.cpp                  |    29 +
 .../locale.codecvt.members/char_out.pass.cpp  |    41 +
 .../char_unshift.pass.cpp                     |    36 +
 .../utf_sanity_check.pass.cpp                 |   221 +
 .../wchar_t_always_noconv.pass.cpp            |    31 +
 .../wchar_t_encoding.pass.cpp                 |    31 +
 .../wchar_t_in.pass.cpp                       |    48 +
 .../wchar_t_length.pass.cpp                   |    37 +
 .../wchar_t_max_length.pass.cpp               |    31 +
 .../wchar_t_out.pass.cpp                      |    76 +
 .../wchar_t_unshift.pass.cpp                  |    40 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.codecvt/types_char.pass.cpp        |    44 +
 .../locale.codecvt/types_char16_t.pass.cpp    |    47 +
 .../types_char16_t_char8_t.pass.cpp           |    46 +
 .../locale.codecvt/types_char32_t.pass.cpp    |    47 +
 .../types_char32_t_char8_t.pass.cpp           |    46 +
 .../locale.codecvt/types_wchar_t.pass.cpp     |    46 +
 .../locale.ctype.byname/is_1.pass.cpp         |   122 +
 .../locale.ctype.byname/is_many.pass.cpp      |   260 +
 .../locale.ctype.byname/mask.pass.cpp         |    61 +
 .../locale.ctype.byname/narrow_1.pass.cpp     |    59 +
 .../locale.ctype.byname/narrow_many.pass.cpp  |    67 +
 .../locale.ctype.byname/scan_is.pass.cpp      |    80 +
 .../locale.ctype.byname/scan_not.pass.cpp     |    80 +
 .../locale.ctype.byname/tolower_1.pass.cpp    |    97 +
 .../locale.ctype.byname/tolower_many.pass.cpp |   103 +
 .../locale.ctype.byname/toupper_1.pass.cpp    |    99 +
 .../locale.ctype.byname/toupper_many.pass.cpp |   103 +
 .../locale.ctype.byname/types.pass.cpp        |    66 +
 .../locale.ctype.byname/widen_1.pass.cpp      |    69 +
 .../locale.ctype.byname/widen_many.pass.cpp   |    75 +
 .../category.ctype/locale.ctype/ctor.pass.cpp |    56 +
 .../locale.ctype.members/is_1.pass.cpp        |    64 +
 .../locale.ctype.members/is_many.pass.cpp     |   123 +
 .../locale.ctype.members/narrow_1.pass.cpp    |    38 +
 .../locale.ctype.members/narrow_many.pass.cpp |    43 +
 .../locale.ctype.members/scan_is.pass.cpp     |    49 +
 .../locale.ctype.members/scan_not.pass.cpp    |    49 +
 .../locale.ctype.members/tolower_1.pass.cpp   |    38 +
 .../tolower_many.pass.cpp                     |    41 +
 .../locale.ctype.members/toupper_1.pass.cpp   |    38 +
 .../toupper_many.pass.cpp                     |    41 +
 .../locale.ctype.members/widen_1.pass.cpp     |    38 +
 .../locale.ctype.members/widen_many.pass.cpp  |    43 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.ctype/types.pass.cpp               |    44 +
 .../category.ctype/with_public_dtor.hpp       |    19 +
 .../nothing_to_do.pass.cpp                    |    13 +
 .../locale.messages/ctor.pass.cpp             |    55 +
 .../not_testable.pass.cpp                     |    37 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.messages/messages_base.pass.cpp    |    27 +
 .../locale.messages/types.pass.cpp            |    40 +
 .../locale.money.get/ctor.pass.cpp            |    55 +
 .../get_long_double_en_US.pass.cpp            |   743 +
 .../get_long_double_fr_FR.pass.cpp            |   744 +
 .../get_long_double_ru_RU.pass.cpp            |   747 +
 .../get_long_double_zh_CN.pass.cpp            |   774 +
 .../get_string_en_US.pass.cpp                 |   751 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.money.get/types.pass.cpp           |    40 +
 .../locale.money.put/ctor.pass.cpp            |    55 +
 .../put_long_double_en_US.pass.cpp            |   585 +
 .../put_long_double_fr_FR.pass.cpp            |   469 +
 .../put_long_double_ru_RU.pass.cpp            |   469 +
 .../put_long_double_zh_CN.pass.cpp            |   519 +
 .../put_string_en_US.pass.cpp                 |   585 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.money.put/types.pass.cpp           |    40 +
 .../curr_symbol.pass.cpp                      |   190 +
 .../decimal_point.pass.cpp                    |   172 +
 .../frac_digits.pass.cpp                      |   159 +
 .../grouping.pass.cpp                         |   179 +
 .../neg_format.pass.cpp                       |   248 +
 .../negative_sign.pass.cpp                    |   175 +
 .../pos_format.pass.cpp                       |   232 +
 .../positive_sign.pass.cpp                    |   159 +
 .../thousands_sep.pass.cpp                    |   186 +
 .../locale.moneypunct/ctor.pass.cpp           |    55 +
 .../curr_symbol.pass.cpp                      |    82 +
 .../decimal_point.pass.cpp                    |    82 +
 .../frac_digits.pass.cpp                      |    82 +
 .../grouping.pass.cpp                         |    82 +
 .../neg_format.pass.cpp                       |    95 +
 .../negative_sign.pass.cpp                    |    83 +
 .../pos_format.pass.cpp                       |    95 +
 .../positive_sign.pass.cpp                    |    82 +
 .../thousands_sep.pass.cpp                    |    82 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.moneypunct/money_base.pass.cpp     |    36 +
 .../locale.moneypunct/types.pass.cpp          |    48 +
 .../locale.nm.put/ctor.pass.cpp               |    55 +
 .../facet.num.put.members/put_bool.pass.cpp   |   102 +
 .../put_double.hex.pass.cpp                   |  3636 +++
 .../facet.num.put.members/put_double.pass.cpp | 14303 ++++++++++
 .../facet.num.put.members/put_long.pass.cpp   |   346 +
 .../put_long_double.hex.pass.cpp              |  3642 +++
 .../put_long_double.pass.cpp                  | 22676 ++++++++++++++++
 .../put_long_long.pass.cpp                    |   346 +
 .../put_pointer.pass.cpp                      |    51 +
 .../put_unsigned_long.pass.cpp                |   349 +
 .../put_unsigned_long_long.pass.cpp           |   346 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.nm.put/types.pass.cpp              |    38 +
 .../locale.num.get/ctor.pass.cpp              |    55 +
 .../facet.num.get.members/get_bool.pass.cpp   |   232 +
 .../facet.num.get.members/get_double.pass.cpp |   281 +
 .../facet.num.get.members/get_float.pass.cpp  |   211 +
 .../facet.num.get.members/get_long.pass.cpp   |   528 +
 .../get_long_double.pass.cpp                  |   270 +
 .../get_long_long.pass.cpp                    |   108 +
 .../get_pointer.pass.cpp                      |    63 +
 .../get_unsigned_int.pass.cpp                 |    85 +
 .../get_unsigned_long.pass.cpp                |    85 +
 .../get_unsigned_long_long.pass.cpp           |    85 +
 .../get_unsigned_short.pass.cpp               |    85 +
 .../test_min_max.pass.cpp                     |    66 +
 .../test_neg_one.pass.cpp                     |   164 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.num.get/types.pass.cpp             |    35 +
 .../date_order.pass.cpp                       |    57 +
 .../date_order_wide.pass.cpp                  |    59 +
 .../locale.time.get.byname/get_date.pass.cpp  |   159 +
 .../get_date_wide.pass.cpp                    |   109 +
 .../get_monthname.pass.cpp                    |    79 +
 .../get_monthname_wide.pass.cpp               |    89 +
 .../locale.time.get.byname/get_one.pass.cpp   |   241 +
 .../get_one_wide.pass.cpp                     |   212 +
 .../locale.time.get.byname/get_time.pass.cpp  |    97 +
 .../get_time_wide.pass.cpp                    |    99 +
 .../get_weekday.pass.cpp                      |    96 +
 .../get_weekday_wide.pass.cpp                 |    94 +
 .../locale.time.get.byname/get_year.pass.cpp  |    88 +
 .../get_year_wide.pass.cpp                    |    90 +
 .../locale.time.get/ctor.pass.cpp             |    55 +
 .../date_order.pass.cpp                       |    36 +
 .../locale.time.get.members/get_date.pass.cpp |    54 +
 .../get_date_wide.pass.cpp                    |    56 +
 .../locale.time.get.members/get_many.pass.cpp |    71 +
 .../get_monthname.pass.cpp                    |   267 +
 .../get_monthname_wide.pass.cpp               |   269 +
 .../locale.time.get.members/get_one.pass.cpp  |   307 +
 .../locale.time.get.members/get_time.pass.cpp |   119 +
 .../get_time_wide.pass.cpp                    |   121 +
 .../get_weekday.pass.cpp                      |   222 +
 .../get_weekday_wide.pass.cpp                 |   224 +
 .../locale.time.get.members/get_year.pass.cpp |   141 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.time.get/time_base.pass.cpp        |    33 +
 .../locale.time.get/types.pass.cpp            |    44 +
 .../locale.time.put.byname/put1.pass.cpp      |    95 +
 .../locale.time.put/ctor.pass.cpp             |    55 +
 .../locale.time.put.members/put1.pass.cpp     |    63 +
 .../locale.time.put.members/put2.pass.cpp     |   337 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../locale.time.put/types.pass.cpp            |    35 +
 .../decimal_point.pass.cpp                    |    73 +
 .../locale.numpunct.byname/grouping.pass.cpp  |    92 +
 .../thousands_sep.pass.cpp                    |    93 +
 .../locale.numpunct/ctor.pass.cpp             |    72 +
 .../decimal_point.pass.cpp                    |    37 +
 .../facet.numpunct.members/falsename.pass.cpp |    37 +
 .../facet.numpunct.members/grouping.pass.cpp  |    37 +
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 .../test/std/re/re.traits/value.pass.cpp      |   129 +
 .../basic.string.hash/char_type_hash.fail.cpp |    77 +
 .../basic.string.hash/enabled_hashes.pass.cpp |    71 +
 .../basic.string.hash/strings.pass.cpp        |    57 +
 .../basic.string.literals/literal.pass.cpp    |    78 +
 .../basic.string.literals/literal.verify.cpp  |    21 +
 .../noexcept.compile.pass.cpp                 |    23 +
 .../allocator_mismatch.verify.cpp             |    14 +
 .../strings/basic.string/char.bad.verify.cpp  |    51 +
 ...range_concept_conformance.compile.pass.cpp |    36 +
 .../basic.string/string.access/at.pass.cpp    |    92 +
 .../basic.string/string.access/back.pass.cpp  |    58 +
 .../basic.string/string.access/front.pass.cpp |    58 +
 .../basic.string/string.access/index.pass.cpp |    55 +
 .../string.capacity/capacity.pass.cpp         |    75 +
 .../string.capacity/clear.pass.cpp            |    58 +
 .../string.capacity/empty.pass.cpp            |    51 +
 .../string.capacity/empty.verify.cpp          |    36 +
 .../string.capacity/length.pass.cpp           |    50 +
 .../string.capacity/max_size.pass.cpp         |    95 +
 .../string.capacity/over_max_size.pass.cpp    |    61 +
 .../reserve.deprecated_in_cxx20.verify.cpp    |    22 +
 .../string.capacity/reserve.pass.cpp          |    61 +
 .../string.capacity/reserve_size.pass.cpp     |    99 +
 .../resize_and_overwrite.pass.cpp             |   103 +
 .../string.capacity/resize_size.pass.cpp      |    83 +
 .../string.capacity/resize_size_char.pass.cpp |    83 +
 ...hrink_to_fit.explicit_instantiation.sh.cpp |    59 +
 .../string.capacity/shrink_to_fit.pass.cpp    |    63 +
 .../string.capacity/size.pass.cpp             |    50 +
 .../string.cons/T_size_size.pass.cpp          |   196 +
 .../basic.string/string.cons/alloc.pass.cpp   |   106 +
 .../string.cons/brace_assignment.pass.cpp     |    46 +
 .../string.cons/char_assignment.pass.cpp      |    56 +
 .../basic.string/string.cons/copy.pass.cpp    |    60 +
 .../string.cons/copy_alloc.pass.cpp           |   142 +
 .../string.cons/copy_assignment.pass.cpp      |    75 +
 .../basic.string/string.cons/default.pass.cpp |    43 +
 .../basic.string/string.cons/dtor.pass.cpp    |    64 +
 .../implicit_deduction_guides.pass.cpp        |   379 +
 .../string.cons/initializer_list.pass.cpp     |    59 +
 .../initializer_list_assignment.pass.cpp      |    45 +
 .../string.cons/iter_alloc.pass.cpp           |   145 +
 .../string.cons/iter_alloc_deduction.pass.cpp |   120 +
 .../basic.string/string.cons/move.pass.cpp    |    62 +
 .../string.cons/move_alloc.pass.cpp           |    87 +
 .../string.cons/move_assign_noexcept.pass.cpp |   107 +
 .../string.cons/move_assignment.pass.cpp      |    71 +
 .../string.cons/move_noexcept.pass.cpp        |    44 +
 .../string.cons/nullptr.compile.pass.cpp      |    21 +
 .../string.cons/pointer_alloc.pass.cpp        |    99 +
 .../string.cons/pointer_assignment.pass.cpp   |    68 +
 .../string.cons/pointer_size_alloc.pass.cpp   |   104 +
 .../string.cons/size_char_alloc.pass.cpp      |   134 +
 .../string.cons/string_view.pass.cpp          |   125 +
 .../string_view_assignment.pass.cpp           |    68 +
 .../string_view_deduction.pass.cpp            |   124 +
 .../string_view_size_size_deduction.pass.cpp  |   128 +
 .../basic.string/string.cons/substr.pass.cpp  |   233 +
 .../string.cons/substr_rvalue.pass.cpp        |   234 +
 .../string.contains/contains.char.pass.cpp    |    44 +
 .../string.contains/contains.ptr.pass.cpp     |    74 +
 .../contains.string_view.pass.cpp             |    95 +
 .../string.ends_with/ends_with.char.pass.cpp  |    42 +
 .../string.ends_with/ends_with.ptr.pass.cpp   |    70 +
 .../ends_with.string_view.pass.cpp            |    79 +
 .../string.iterators/begin.pass.cpp           |    59 +
 .../string.iterators/cbegin.pass.cpp          |    56 +
 .../string.iterators/cend.pass.cpp            |    51 +
 .../string.iterators/crbegin.pass.cpp         |    56 +
 .../string.iterators/crend.pass.cpp           |    52 +
 .../string.iterators/end.pass.cpp             |    62 +
 ...rator_concept_conformance.compile.pass.cpp |    77 +
 .../string.iterators/iterators.pass.cpp       |    85 +
 .../string.iterators/rbegin.pass.cpp          |    59 +
 .../string.iterators/rend.pass.cpp            |    62 +
 .../robust_against_adl.pass.cpp               |    46 +
 .../string_append/T_size_size.pass.cpp        |   188 +
 .../string_append/initializer_list.pass.cpp   |    45 +
 .../string_append/iterator.pass.cpp           |   212 +
 .../string_append/pointer.pass.cpp            |    77 +
 .../string_append/pointer_size.pass.cpp       |    83 +
 .../string_append/push_back.pass.cpp          |   104 +
 .../string_append/size_char.pass.cpp          |    62 +
 .../string_append/string.pass.cpp             |    79 +
 .../string_append/string_size_size.pass.cpp   |   127 +
 .../string_append/string_view.pass.cpp        |    72 +
 .../string_assign/T_size_size.pass.cpp        |   183 +
 .../string_assign/initializer_list.pass.cpp   |    45 +
 .../string_assign/iterator.pass.cpp           |   182 +
 .../string_assign/pointer.pass.cpp            |    76 +
 .../string_assign/pointer_size.pass.cpp       |    83 +
 .../string_assign/rv_string.pass.cpp          |    71 +
 .../string_assign/size_char.pass.cpp          |    62 +
 .../string_assign/string.pass.cpp             |   127 +
 .../string_assign/string_size_size.pass.cpp   |   127 +
 .../string_assign/string_view.pass.cpp        |    90 +
 .../string_copy/copy.pass.cpp                 |   132 +
 .../string_erase/iter.pass.cpp                |    64 +
 .../string_erase/iter_iter.pass.cpp           |   107 +
 .../string_erase/pop_back.pass.cpp            |    53 +
 .../string_erase/size_size.pass.cpp           |   212 +
 .../string_insert/iter_char.pass.cpp          |    71 +
 .../iter_initializer_list.pass.cpp            |    48 +
 ...iter_iter_iter.infinite_recursion.pass.cpp |   107 +
 .../string_insert/iter_iter_iter.pass.cpp     |   203 +
 .../string_insert/iter_size_char.pass.cpp     |   116 +
 .../string_insert/size_T_size_size.pass.cpp   |  1911 ++
 .../string_insert/size_pointer.pass.cpp       |   167 +
 .../string_insert/size_pointer_size.pass.cpp  |   407 +
 .../string_insert/size_size_char.pass.cpp     |   152 +
 .../string_insert/size_string.pass.cpp        |   160 +
 .../size_string_size_size.pass.cpp            |  1869 ++
 .../string_insert/string_view.pass.cpp        |   168 +
 .../string_op_plus_equal/char.pass.cpp        |    57 +
 .../initializer_list.pass.cpp                 |    45 +
 .../string_op_plus_equal/pointer.pass.cpp     |    69 +
 .../string_op_plus_equal/string.pass.cpp      |    79 +
 .../iter_iter_initializer_list.pass.cpp       |    45 +
 .../iter_iter_iter_iter.pass.cpp              |  1081 +
 .../string_replace/iter_iter_pointer.pass.cpp |   322 +
 .../iter_iter_pointer_size.pass.cpp           |  1017 +
 .../iter_iter_size_char.pass.cpp              |   295 +
 .../string_replace/iter_iter_string.pass.cpp  |   304 +
 .../iter_iter_string_view.pass.cpp            |   307 +
 .../size_size_T_size_size.pass.cpp            |  6149 +++++
 .../string_replace/size_size_pointer.pass.cpp |   394 +
 .../size_size_pointer_size.pass.cpp           |  1363 +
 .../size_size_size_char.pass.cpp              |   394 +
 .../string_replace/size_size_string.pass.cpp  |   401 +
 .../size_size_string_size_size.pass.cpp       |  6101 +++++
 .../size_size_string_view.pass.cpp            |   394 +
 .../string_swap/swap.pass.cpp                 |    71 +
 .../string.cmp/comparison.pass.cpp            |   101 +
 .../string.io/get_line.pass.cpp               |   170 +
 .../string.io/get_line_delim.pass.cpp         |   181 +
 .../string.io/get_line_delim_rv.pass.cpp      |    53 +
 .../string.io/get_line_rv.pass.cpp            |    53 +
 .../string.nonmembers/string.io/lit.local.cfg |     3 +
 .../string.io/stream_extract.pass.cpp         |   161 +
 .../string.io/stream_insert.pass.cpp          |    97 +
 .../string.special/swap.pass.cpp              |    89 +
 .../string.special/swap_noexcept.pass.cpp     |    86 +
 .../string_op!=/pointer_string.pass.cpp       |    64 +
 .../string_op!=/string_pointer.pass.cpp       |    64 +
 .../string_op!=/string_string.pass.cpp        |    65 +
 .../string_op!=/string_string_view.pass.cpp   |    64 +
 .../string_op!=/string_view_string.pass.cpp   |    64 +
 .../string_op+/allocator_propagation.pass.cpp |   205 +
 .../string_op+/char_string.pass.cpp           |    80 +
 .../string_op+/pointer_string.pass.cpp        |   141 +
 .../string_op+/string_char.pass.cpp           |    80 +
 .../string_op+/string_pointer.pass.cpp        |   140 +
 .../string_op+/string_string.pass.cpp         |   258 +
 .../string_operator==/pointer_string.pass.cpp |    80 +
 .../string_operator==/string_pointer.pass.cpp |    80 +
 .../string_operator==/string_string.pass.cpp  |    81 +
 .../string_string_view.pass.cpp               |    81 +
 .../string_view_string.pass.cpp               |    81 +
 .../string_opgt/pointer_string.pass.cpp       |    80 +
 .../string_opgt/string_pointer.pass.cpp       |    80 +
 .../string_opgt/string_string.pass.cpp        |    81 +
 .../string_opgt/string_string_view.pass.cpp   |    81 +
 .../string_opgt/string_view_string.pass.cpp   |    81 +
 .../string_opgt=/pointer_string.pass.cpp      |    80 +
 .../string_opgt=/string_pointer.pass.cpp      |    80 +
 .../string_opgt=/string_string.pass.cpp       |    81 +
 .../string_opgt=/string_string_view.pass.cpp  |    81 +
 .../string_opgt=/string_view_string.pass.cpp  |    81 +
 .../string_oplt/pointer_string.pass.cpp       |    80 +
 .../string_oplt/string_pointer.pass.cpp       |    80 +
 .../string_oplt/string_string.pass.cpp        |    81 +
 .../string_oplt/string_string_view.pass.cpp   |    81 +
 .../string_oplt/string_view_string.pass.cpp   |    81 +
 .../string_oplt=/pointer_string.pass.cpp      |    80 +
 .../string_oplt=/string_pointer.pass.cpp      |    80 +
 .../string_oplt=/string_string.pass.cpp       |    81 +
 .../string_oplt=/string_string_view.pass.cpp  |    81 +
 .../string_oplt=/string_view_string.pass.cpp  |    81 +
 .../string.accessors/c_str.pass.cpp           |    63 +
 .../string.ops/string.accessors/data.pass.cpp |    88 +
 .../string.accessors/get_allocator.pass.cpp   |    58 +
 .../string_compare/pointer.pass.cpp           |    89 +
 .../size_size_T_size_size.pass.cpp            |  6112 +++++
 .../string_compare/size_size_pointer.pass.cpp |   391 +
 .../size_size_pointer_size.pass.cpp           |  1360 +
 .../string_compare/size_size_string.pass.cpp  |   397 +
 .../size_size_string_size_size.pass.cpp       |  6078 +++++
 .../size_size_string_view.pass.cpp            |   393 +
 .../string.ops/string_compare/string.pass.cpp |    96 +
 .../string_compare/string_view.pass.cpp       |    91 +
 .../char_size.pass.cpp                        |   115 +
 .../pointer_size.pass.cpp                     |   170 +
 .../pointer_size_size.pass.cpp                |   399 +
 .../string_size.pass.cpp                      |   177 +
 .../string_view_size.pass.cpp                 |   172 +
 .../string_find.first.of/char_size.pass.cpp   |   111 +
 .../pointer_size.pass.cpp                     |   171 +
 .../pointer_size_size.pass.cpp                |   399 +
 .../string_find.first.of/string_size.pass.cpp |   177 +
 .../string_view_size.pass.cpp                 |   172 +
 .../char_size.pass.cpp                        |   111 +
 .../pointer_size.pass.cpp                     |   171 +
 .../pointer_size_size.pass.cpp                |   399 +
 .../string_size.pass.cpp                      |   177 +
 .../string_view_size.pass.cpp                 |   172 +
 .../string_find.last.of/char_size.pass.cpp    |   111 +
 .../string_find.last.of/pointer_size.pass.cpp |   171 +
 .../pointer_size_size.pass.cpp                |   399 +
 .../string_find.last.of/string_size.pass.cpp  |   177 +
 .../string_view_size.pass.cpp                 |   172 +
 .../string.ops/string_find/char_size.pass.cpp |   111 +
 .../string_find/pointer_size.pass.cpp         |   177 +
 .../string_find/pointer_size_size.pass.cpp    |   399 +
 .../string_find/string_size.pass.cpp          |   177 +
 .../string_find/string_view_size.pass.cpp     |   172 +
 .../string_rfind/char_size.pass.cpp           |   111 +
 .../string_rfind/pointer_size.pass.cpp        |   178 +
 .../string_rfind/pointer_size_size.pass.cpp   |   399 +
 .../string_rfind/string_size.pass.cpp         |   177 +
 .../string_rfind/string_view_size.pass.cpp    |   172 +
 .../string.ops/string_substr/substr.pass.cpp  |   157 +
 .../string_substr/substr_rvalue.pass.cpp      |   104 +
 .../string.require/contiguous.pass.cpp        |    64 +
 .../starts_with.char.pass.cpp                 |    42 +
 .../starts_with.ptr.pass.cpp                  |    70 +
 .../starts_with.string_view.pass.cpp          |    78 +
 .../std/strings/basic.string/test_traits.h    |    18 +
 .../basic.string/traits_mismatch.verify.cpp   |    16 +
 .../std/strings/basic.string/types.pass.cpp   |    89 +
 .../std/strings/c.strings/cctype.pass.cpp     |   107 +
 .../std/strings/c.strings/cstring.pass.cpp    |   138 +
 .../strings/c.strings/cuchar.compile.pass.cpp |    35 +
 .../std/strings/c.strings/cwchar.pass.cpp     |   130 +
 .../std/strings/c.strings/cwctype.pass.cpp    |   120 +
 .../c.strings/no_c8rtomb_mbrtoc8.verify.cpp   |    27 +
 .../nothing_to_do.pass.cpp                    |    13 +
 .../assign2.pass.cpp                          |    41 +
 .../assign3.pass.cpp                          |    41 +
 .../compare.pass.cpp                          |    58 +
 .../copy.pass.cpp                             |    43 +
 .../eof.pass.cpp                              |    25 +
 .../eq.pass.cpp                               |    26 +
 .../eq_int_type.pass.cpp                      |    29 +
 .../find.pass.cpp                             |    47 +
 .../length.pass.cpp                           |    43 +
 .../lt.pass.cpp                               |    36 +
 .../move.pass.cpp                             |    47 +
 .../not_eof.pass.cpp                          |    29 +
 .../to_char_type.pass.cpp                     |    27 +
 .../to_int_type.pass.cpp                      |    27 +
 .../types.compile.pass.cpp                    |    32 +
 .../assign2.pass.cpp                          |    43 +
 .../assign3.pass.cpp                          |    41 +
 .../compare.pass.cpp                          |    61 +
 .../copy.pass.cpp                             |    43 +
 .../eof.pass.cpp                              |    22 +
 .../eq.pass.cpp                               |    25 +
 .../eq_int_type.pass.cpp                      |    31 +
 .../find.pass.cpp                             |    47 +
 .../length.pass.cpp                           |    44 +
 .../lt.pass.cpp                               |    25 +
 .../move.pass.cpp                             |    47 +
 .../not_eof.pass.cpp                          |    31 +
 .../to_char_type.pass.cpp                     |    29 +
 .../to_int_type.pass.cpp                      |    29 +
 .../types.compile.pass.cpp                    |    33 +
 .../assign2.pass.cpp                          |    43 +
 .../assign3.pass.cpp                          |    41 +
 .../compare.pass.cpp                          |    60 +
 .../copy.pass.cpp                             |    43 +
 .../eof.pass.cpp                              |    26 +
 .../eq.pass.cpp                               |    25 +
 .../eq_int_type.pass.cpp                      |    31 +
 .../find.pass.cpp                             |    47 +
 .../length.pass.cpp                           |    44 +
 .../lt.pass.cpp                               |    25 +
 .../move.pass.cpp                             |    47 +
 .../not_eof.pass.cpp                          |    31 +
 .../to_char_type.pass.cpp                     |    29 +
 .../to_int_type.pass.cpp                      |    29 +
 .../types.compile.pass.cpp                    |    33 +
 .../assign2.pass.cpp                          |    41 +
 .../assign3.pass.cpp                          |    45 +
 .../compare.pass.cpp                          |    60 +
 .../copy.pass.cpp                             |    47 +
 .../eof.pass.cpp                              |    29 +
 .../eq.pass.cpp                               |    29 +
 .../eq_int_type.pass.cpp                      |    32 +
 .../find.pass.cpp                             |    48 +
 .../length.pass.cpp                           |    43 +
 .../lt.pass.cpp                               |    29 +
 .../move.pass.cpp                             |    51 +
 .../not_eof.pass.cpp                          |    32 +
 .../to_char_type.pass.cpp                     |    30 +
 .../to_int_type.pass.cpp                      |    30 +
 .../types.compile.pass.cpp                    |    34 +
 .../assign2.pass.cpp                          |    43 +
 .../assign3.pass.cpp                          |    43 +
 .../compare.pass.cpp                          |    60 +
 .../copy.pass.cpp                             |    45 +
 .../eof.pass.cpp                              |    27 +
 .../eq.pass.cpp                               |    28 +
 .../eq_int_type.pass.cpp                      |    31 +
 .../find.pass.cpp                             |    49 +
 .../length.pass.cpp                           |    44 +
 .../lt.pass.cpp                               |    38 +
 .../move.pass.cpp                             |    49 +
 .../not_eof.pass.cpp                          |    31 +
 .../to_char_type.pass.cpp                     |    29 +
 .../to_int_type.pass.cpp                      |    29 +
 .../types.compile.pass.cpp                    |    34 +
 .../nothing_to_do.pass.cpp                    |    13 +
 .../string.classes/typedefs.compile.pass.cpp  |    33 +
 .../strings/string.conversions/stod.pass.cpp  |   159 +
 .../strings/string.conversions/stof.pass.cpp  |   160 +
 .../strings/string.conversions/stoi.pass.cpp  |   121 +
 .../strings/string.conversions/stol.pass.cpp  |   123 +
 .../strings/string.conversions/stold.pass.cpp |   153 +
 .../strings/string.conversions/stoll.pass.cpp |   123 +
 .../strings/string.conversions/stoul.pass.cpp |   121 +
 .../string.conversions/stoull.pass.cpp        |   121 +
 .../string.conversions/to_string.pass.cpp     |   124 +
 .../string.conversions/to_wstring.pass.cpp    |   126 +
 .../std/strings/string.view/char.bad.fail.cpp |    56 +
 .../enable_borrowed_range.compile.pass.cpp    |    26 +
 ...range_concept_conformance.compile.pass.cpp |    36 +
 .../string.view.access/at.pass.cpp            |    61 +
 .../string.view.access/back.pass.cpp          |    57 +
 .../string.view.access/data.pass.cpp          |    59 +
 .../string.view.access/front.pass.cpp         |    57 +
 .../string.view.access/index.pass.cpp         |    60 +
 .../string.view.capacity/capacity.pass.cpp    |   121 +
 .../string.view.capacity/empty.verify.cpp     |    27 +
 .../common_type_specialization.pass.cpp       |    73 +
 .../comparison.pass.cpp                       |   149 +
 .../comparison.verify.cpp                     |    96 +
 .../string.view.comparison/equal.pass.cpp     |   116 +
 .../string.view.comparison/greater.pass.cpp   |   116 +
 .../greater_equal.pass.cpp                    |   116 +
 .../string.view.comparison/less.pass.cpp      |   116 +
 .../less_equal.pass.cpp                       |   116 +
 .../string.view.comparison/not_equal.pass.cpp |   116 +
 .../string.view.cons/assign.pass.cpp          |    60 +
 .../string.view.cons/default.pass.cpp         |    51 +
 .../from_iterator_sentinel.pass.cpp           |    98 +
 .../string.view.cons/from_literal.pass.cpp    |    72 +
 .../string.view.cons/from_ptr_len.pass.cpp    |    89 +
 .../string.view.cons/from_range.pass.cpp      |   199 +
 .../string.view.cons/from_string.pass.cpp     |    68 +
 .../from_string1.compile.fail.cpp             |    34 +
 .../from_string2.compile.fail.cpp             |    34 +
 .../implicit_deduction_guides.pass.cpp        |    71 +
 .../string.view.cons/nullptr.compile.pass.cpp |    20 +
 .../string.view.deduct/implicit.pass.cpp      |    36 +
 .../iterator_sentinel.pass.cpp                |    55 +
 .../string.view.deduct/range.pass.cpp         |    55 +
 .../string.view.find/find_char_size.pass.cpp  |    89 +
 .../find_first_not_of_char_size.pass.cpp      |    90 +
 .../find_first_not_of_pointer_size.pass.cpp   |   170 +
 ...nd_first_not_of_pointer_size_size.pass.cpp |   397 +
 ...ind_first_not_of_string_view_size.pass.cpp |   154 +
 .../find_first_of_char_size.pass.cpp          |    87 +
 .../find_first_of_pointer_size.pass.cpp       |   171 +
 .../find_first_of_pointer_size_size.pass.cpp  |   397 +
 .../find_first_of_string_view_size.pass.cpp   |   155 +
 .../find_last_not_of_char_size.pass.cpp       |    88 +
 .../find_last_not_of_pointer_size.pass.cpp    |   170 +
 ...ind_last_not_of_pointer_size_size.pass.cpp |   397 +
 ...find_last_not_of_string_view_size.pass.cpp |   155 +
 .../find_last_of_char_size.pass.cpp           |    88 +
 .../find_last_of_pointer_size.pass.cpp        |   171 +
 .../find_last_of_pointer_size_size.pass.cpp   |   397 +
 .../find_last_of_string_view_size.pass.cpp    |   155 +
 .../find_pointer_size.pass.cpp                |   177 +
 .../find_pointer_size_size.pass.cpp           |   398 +
 .../find_string_view_size.pass.cpp            |   170 +
 .../string.view.find/rfind_char_size.pass.cpp |    89 +
 .../rfind_pointer_size.pass.cpp               |   177 +
 .../rfind_pointer_size_size.pass.cpp          |   397 +
 .../rfind_string_view_size.pass.cpp           |   170 +
 .../string.view.hash/char_type.hash.fail.cpp  |    77 +
 .../string.view.hash/enabled_hashes.pass.cpp  |    70 +
 .../string.view.hash/string_view.pass.cpp     |    74 +
 .../string.view.io/stream_insert.pass.cpp     |    63 +
 ...tream_insert_decl_present.compile.pass.cpp |    26 +
 .../string.view.iterators/begin.pass.cpp      |   105 +
 .../string.view.iterators/end.pass.cpp        |   114 +
 ...rator_concept_conformance.compile.pass.cpp |    52 +
 .../string.view.iterators/rbegin.pass.cpp     |   106 +
 .../string.view.iterators/rend.pass.cpp       |   114 +
 .../remove_prefix.pass.cpp                    |    81 +
 .../remove_suffix.pass.cpp                    |    82 +
 .../string.view.modifiers/swap.pass.cpp       |    80 +
 .../string.view.nonmem/quoted.pass.cpp        |   225 +
 .../string.view.ops/compare.pointer.pass.cpp  |   132 +
 .../compare.pointer_size.pass.cpp             |   458 +
 .../compare.size_size_sv.pass.cpp             |   407 +
 ...compare.size_size_sv_pointer_size.pass.cpp |  1358 +
 .../compare.size_size_sv_size_size.pass.cpp   |  5853 ++++
 .../string.view.ops/compare.sv.pass.cpp       |   127 +
 .../string.view/string.view.ops/copy.pass.cpp |   137 +
 .../string.view.ops/substr.pass.cpp           |   126 +
 .../string.view.synop/nothing_to_do.pass.cpp  |    13 +
 .../contains.char.pass.cpp                    |    45 +
 .../contains.ptr.pass.cpp                     |    75 +
 .../contains.string_view.pass.cpp             |    89 +
 .../ends_with.char.pass.cpp                   |    49 +
 .../ends_with.ptr.pass.cpp                    |   100 +
 .../ends_with.string_view.pass.cpp            |   106 +
 .../starts_with.char.pass.cpp                 |    49 +
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 .../traits_mismatch.compile.fail.cpp          |    21 +
 .../trivially_copyable.compile.pass.cpp       |    28 +
 .../std/strings/string.view/types.pass.cpp    |    85 +
 .../strings/strings.erasure/erase.pass.cpp    |    76 +
 .../strings/strings.erasure/erase_if.pass.cpp |    77 +
 .../strings.general/nothing_to_do.pass.cpp    |    13 +
 .../futures/futures.async/async.pass.cpp      |   158 +
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 app/src/main/cpp/libcxx/test/std/time/clock.h |    25 +
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 app/src/main/cpp/libcxx/test/std/time/rep.h   |    64 +
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 .../time.cal.year.nonmembers/minus.pass.cpp   |    61 +
 .../time.cal.year.nonmembers/ostream.pass.cpp |    90 +
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 .../time.cal/time.cal.year/types.pass.cpp     |    27 +
 .../time.cal.ym.members/ctor.pass.cpp         |    53 +
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 .../time.cal.ym.members/ok.pass.cpp           |    51 +
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 .../time.cal.ym.members/year.pass.cpp         |    40 +
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 .../time.cal.ymd.members/ok.pass.cpp          |    97 +
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 .../weekday.pass.cpp                          |    42 +
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 .../comparisons.pass.cpp                      |   115 +
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 .../time.clock.req/nothing_to_do.pass.cpp     |    13 +
 .../time.clock.file/consistency.pass.cpp      |    40 +
 .../time.clock.file/file_time.pass.cpp        |    30 +
 .../time.clock/time.clock.file/now.pass.cpp   |    37 +
 .../time.clock.file/rep_signed.pass.cpp       |    30 +
 .../time.clock.file/to_from_sys.pass.cpp      |    67 +
 .../time.clock.hires/consistency.pass.cpp     |    37 +
 .../time.clock/time.clock.hires/now.pass.cpp  |    29 +
 .../time.clock.steady/consistency.pass.cpp    |    39 +
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 .../time.clock.system/consistency.pass.cpp    |    38 +
 .../time.clock.system/from_time_t.pass.cpp    |    27 +
 .../local_time.types.pass.cpp                 |    66 +
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 .../time.clock.system/sys.time.types.pass.cpp |    65 +
 .../time.clock.system/to_time_t.pass.cpp      |    27 +
 .../time/time.duration/default_ratio.pass.cpp |    30 +
 .../time.duration/duration.compile.fail.cpp   |    24 +
 .../positive_num.compile.fail.cpp             |    23 +
 .../time/time.duration/ratio.compile.fail.cpp |    31 +
 .../time.duration.alg/abs.compile.fail.cpp    |    28 +
 .../time.duration.alg/abs.pass.cpp            |    60 +
 .../time.duration.arithmetic/op_++.pass.cpp   |    42 +
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 .../time.duration.arithmetic/op_+.pass.cpp    |    49 +
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 .../time.duration.arithmetic/op_--.pass.cpp   |    42 +
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 .../time.duration.arithmetic/op_-.pass.cpp    |    50 +
 .../time.duration.arithmetic/op_-=.pass.cpp   |    46 +
 .../op_divide=.pass.cpp                       |    52 +
 .../op_mod=duration.pass.cpp                  |    56 +
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 .../time.duration.cast/ceil.compile.fail.cpp  |    27 +
 .../time.duration.cast/ceil.pass.cpp          |    54 +
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 .../time.duration.cast/round.pass.cpp         |    53 +
 .../toduration.compile.fail.cpp               |    26 +
 .../op_equal.pass.cpp                         |   119 +
 .../op_less.pass.cpp                          |   157 +
 .../time.duration.cons/convert_exact.pass.cpp |    39 +
 .../convert_float_to_int.compile.fail.cpp     |    26 +
 .../convert_inexact.compile.fail.cpp          |    26 +
 .../convert_inexact.pass.cpp                  |    40 +
 .../convert_int_to_float.pass.cpp             |    40 +
 .../convert_overflow.pass.cpp                 |    41 +
 .../time.duration.cons/default.pass.cpp       |    40 +
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 .../time.duration.cons/rep02.pass.cpp         |    33 +
 .../time.duration.cons/rep03.compile.fail.cpp |    25 +
 .../time.duration.literals/literals.pass.cpp  |    62 +
 .../literals1.compile.fail.cpp                |    18 +
 .../time.duration.literals/literals1.pass.cpp |    73 +
 .../literals2.compile.fail.cpp                |    20 +
 .../time.duration.literals/literals2.pass.cpp |    53 +
 .../time.duration.nonmember/op_+.pass.cpp     |    77 +
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 .../op_divide_rep.compile.fail.cpp            |    27 +
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 .../op_times_rep1.compile.fail.cpp            |    31 +
 .../op_times_rep2.compile.fail.cpp            |    31 +
 .../time.duration.nonmember/ostream.pass.cpp  |   234 +
 .../tested_elsewhere.pass.cpp                 |    13 +
 .../time.duration.special/max.pass.cpp        |    49 +
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 .../std/time/time.duration/types.pass.cpp     |    31 +
 .../test/std/time/time.hms/hhmmss.fail.cpp    |    30 +
 .../std/time/time.hms/time.12/is_am.pass.cpp  |    37 +
 .../std/time/time.hms/time.12/is_pm.pass.cpp  |    37 +
 .../std/time/time.hms/time.12/make12.pass.cpp |    39 +
 .../std/time/time.hms/time.12/make24.pass.cpp |    46 +
 .../time.hms/time.hms.members/hours.pass.cpp  |    70 +
 .../time.hms.members/is_negative.pass.cpp     |    56 +
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 .../time.hms.members/subseconds.pass.cpp      |    62 +
 .../time.hms.members/to_duration.pass.cpp     |    62 +
 .../time.hms/time.hms.members/width.pass.cpp  |    59 +
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 .../time/time.point/duration.compile.fail.cpp |    23 +
 .../time.point.arithmetic/op_+=.pass.cpp      |    47 +
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 .../time.point.cast/time_point_cast.pass.cpp  |    84 +
 .../toduration.compile.fail.cpp               |    29 +
 .../op_equal.compile.fail.cpp                 |    41 +
 .../time.point.comparisons/op_equal.pass.cpp  |    87 +
 .../op_less.compile.fail.cpp                  |    49 +
 .../time.point.comparisons/op_less.pass.cpp   |   111 +
 .../time.point.cons/convert.compile.fail.cpp  |    31 +
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 .../time.point.special/max.pass.cpp           |    32 +
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 .../std/time/time.syn/formatter.day.pass.cpp  |   129 +
 .../time/time.syn/formatter.duration.pass.cpp |  1095 +
 .../time/time.syn/formatter.month.pass.cpp    |   198 +
 .../time.syn/formatter.month_day.pass.cpp     |   491 +
 .../formatter.month_day_last.pass.cpp         |   405 +
 .../time.syn/formatter.month_weekday.pass.cpp |   723 +
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 .../time.syn/formatter.weekday_index.pass.cpp |   412 +
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 .../std/time/time.syn/formatter.year.pass.cpp |   310 +
 .../time.syn/formatter.year_month.pass.cpp    |   290 +
 .../formatter.year_month_day.pass.cpp         |  1082 +
 .../formatter.year_month_day_last.pass.cpp    |   934 +
 .../formatter.year_month_weekday.pass.cpp     |   737 +
 ...formatter.year_month_weekday_last.pass.cpp |   246 +
 .../test/std/time/time.syn/formatter_tests.h  |   275 +
 .../time.traits.duration_values/max.pass.cpp  |    47 +
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 .../treat_as_floating_point.pass.cpp          |    44 +
 .../duration.pass.cpp                         |    47 +
 .../time_point.pass.cpp                       |    51 +
 .../cpp/libcxx/test/std/time/weeks.pass.cpp   |    32 +
 .../cpp/libcxx/test/std/time/years.pass.cpp   |    32 +
 .../allocator.adaptor.cnstr/allocs.pass.cpp   |   119 +
 .../converting_copy.pass.cpp                  |    70 +
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 .../allocator.adaptor.cnstr/deduct.pass.cpp   |    64 +
 .../allocator.adaptor.cnstr/default.pass.cpp  |    59 +
 .../allocate_size.pass.cpp                    |    50 +
 .../allocate_size.verify.cpp                  |    29 +
 .../allocate_size_hint.pass.cpp               |    71 +
 .../allocate_size_hint.verify.cpp             |    29 +
 .../construct.pass.cpp                        |   213 +
 .../construct_pair.pass.cpp                   |   173 +
 .../construct_pair_const_lvalue_pair.pass.cpp |   189 +
 .../construct_pair_piecewise.pass.cpp         |   190 +
 .../construct_pair_rvalue.pass.cpp            |   189 +
 .../construct_pair_values.pass.cpp            |   181 +
 .../construct_type.pass.cpp                   |   147 +
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 ...ct_on_container_copy_construction.pass.cpp |    56 +
 .../allocator_pointers.pass.cpp               |   124 +
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 .../is_always_equal.pass.cpp                  |    74 +
 ...gate_on_container_copy_assignment.pass.cpp |    40 +
 ...gate_on_container_move_assignment.pass.cpp |    40 +
 .../propagate_on_container_swap.pass.cpp      |    39 +
 .../copy_assign.pass.cpp                      |    74 +
 .../scoped.adaptor.operators/eq.pass.cpp      |    64 +
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 .../allocator.adaptor/types.pass.cpp          |   102 +
 .../any/any.class/any.assign/copy.pass.cpp    |   199 +
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 .../any/any.class/any.assign/value.pass.cpp   |   210 +
 .../any/any.class/any.cons/copy.pass.cpp      |   101 +
 .../any/any.class/any.cons/default.pass.cpp   |    45 +
 .../any.class/any.cons/in_place_type.pass.cpp |   195 +
 .../any/any.class/any.cons/move.pass.cpp      |   101 +
 .../any/any.class/any.cons/value.pass.cpp     |   155 +
 .../any.class/any.modifiers/emplace.pass.cpp  |   285 +
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 .../any/any.class/any.modifiers/swap.pass.cpp |   132 +
 .../any.observers/has_value.pass.cpp          |    62 +
 .../any/any.class/any.observers/type.pass.cpp |    45 +
 .../any.cast/any_cast_pointer.pass.cpp        |   183 +
 .../any.cast/any_cast_reference.pass.cpp      |   309 +
 ...st_request_invalid_value_category.fail.cpp |    68 +
 .../any.cast/const_correctness.verify.cpp     |    50 +
 .../not_copy_constructible.verify.cpp         |    63 +
 .../any.cast/reference_types.fail.cpp         |    52 +
 .../any/any.nonmembers/make_any.pass.cpp      |   140 +
 .../any/any.nonmembers/swap.pass.cpp          |    43 +
 .../integral.bool.fail.cpp                    |    32 +
 .../charconv.from.chars/integral.pass.cpp     |   153 +
 .../integral.roundtrip.pass.cpp               |    93 +
 ..._fixed_precision_to_chars_test_cases_1.hpp |   300 +
 ..._fixed_precision_to_chars_test_cases_2.hpp |  3477 +++
 ..._fixed_precision_to_chars_test_cases_3.hpp | 10832 ++++++++
 ..._fixed_precision_to_chars_test_cases_4.hpp | 10811 ++++++++
 .../double_from_chars_test_cases.hpp          |  1146 +
 ..._general_precision_to_chars_test_cases.hpp |  5063 ++++
 ...uble_hex_precision_to_chars_test_cases.hpp |   120 +
 ...ntific_precision_to_chars_test_cases_1.hpp |   327 +
 ...ntific_precision_to_chars_test_cases_2.hpp |  3219 +++
 ...ntific_precision_to_chars_test_cases_3.hpp | 10125 +++++++
 ...ntific_precision_to_chars_test_cases_4.hpp | 10107 +++++++
 .../double_to_chars_test_cases.hpp            |  2916 ++
 ...at_fixed_precision_to_chars_test_cases.hpp |  1264 +
 .../float_from_chars_test_cases.hpp           |   139 +
 ..._general_precision_to_chars_test_cases.hpp |  1218 +
 ...loat_hex_precision_to_chars_test_cases.hpp |   106 +
 ...ientific_precision_to_chars_test_cases.hpp |  1093 +
 .../float_to_chars_test_cases.hpp             |   541 +
 .../floating_point_test_cases.hpp             |   278 +
 .../utilities/charconv/charconv.msvc/test.cpp |  1083 +
 .../utilities/charconv/charconv.msvc/test.hpp |    63 +
 .../charconv/charconv.msvc/test.pass.cpp      |    47 +
 .../charconv.syn/chars_format.pass.cpp        |    75 +
 .../charconv.syn/from_chars_result.pass.cpp   |    56 +
 .../charconv.syn/to_chars_result.pass.cpp     |    56 +
 .../charconv.to.chars/integral.bool.fail.cpp  |    32 +
 .../charconv.to.chars/integral.pass.cpp       |   310 +
 .../expected/expected.bad/ctor.error.pass.cpp |    31 +
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 .../assign/emplace.intializer_list.pass.cpp   |    91 +
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 .../equality/equality.other_expected.pass.cpp |    78 +
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 .../expected.expected/swap/free.swap.pass.cpp |   223 +
 .../swap/member.swap.pass.cpp                 |   239 +
 .../assign/assign.copy.pass.cpp               |    32 +
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 .../expected.unexpected/ctad.compile.pass.cpp |    19 +
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 .../ctor/ctor.error.pass.cpp                  |   122 +
 .../ctor/ctor.inplace.pass.cpp                |   103 +
 .../ctor/ctor.inplace_init_list.pass.cpp      |   103 +
 .../ctor/ctor.move.pass.cpp                   |    34 +
 .../expected.unexpected/equality.pass.cpp     |    41 +
 .../observer/error.const_ref.pass.cpp         |    38 +
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 .../swap/swap.free.pass.cpp                   |    69 +
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 .../expected.void/assign/assign.copy.pass.cpp |   126 +
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 .../assign/assign.unexpected.copy.pass.cpp    |   117 +
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 .../expected.void/assign/emplace.pass.cpp     |    60 +
 .../ctor/ctor.convert.copy.pass.cpp           |   129 +
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 .../expected.void/ctor/ctor.copy.pass.cpp     |    95 +
 .../expected.void/ctor/ctor.default.pass.cpp  |    52 +
 .../expected.void/ctor/ctor.inplace.pass.cpp  |    35 +
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 .../expected.void/ctor/ctor.unexpect.pass.cpp |   133 +
 .../ctor/ctor.unexpect_init_list.pass.cpp     |   118 +
 .../ctor/ctor.unexpected.copy.pass.cpp        |    91 +
 .../ctor/ctor.unexpected.move.pass.cpp        |   101 +
 .../expected/expected.void/dtor.pass.cpp      |    57 +
 .../equality/equality.other_expected.pass.cpp |    74 +
 .../equality/equality.unexpected.pass.cpp     |    53 +
 .../expected.void/observers/bool.pass.cpp     |    56 +
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 .../observers/has_value.pass.cpp              |    53 +
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 .../expected.void/swap/free.swap.pass.cpp     |   164 +
 .../expected.void/swap/member.swap.pass.cpp   |   173 +
 .../test/std/utilities/expected/types.h       |   145 +
 .../make_format_args.pass.cpp                 |    31 +
 .../format.arg.store/make_format_args.sh.cpp  |    27 +
 .../make_wformat_args.pass.cpp                |    31 +
 .../format.arguments/format.arg/ctor.pass.cpp |    49 +
 .../format.arg/operator_bool.pass.cpp         |    44 +
 .../format.arg/visit_format_arg.pass.cpp      |   354 +
 .../format.args/ctor.pass.cpp                 |    68 +
 .../format.arguments/format.args/get.pass.cpp |   301 +
 .../format.args/types.compile.pass.cpp        |    31 +
 .../format/format.error/format.error.pass.cpp |    51 +
 .../format/format.fmt.string/ctor.verify.cpp  |    46 +
 .../format/format.fmt.string/get.pass.cpp     |    53 +
 .../format.fmt.string/types.compile.pass.cpp  |    40 +
 .../concept.formattable.compile.pass.cpp      |   350 +
 .../format.context/advance_to.pass.cpp        |    72 +
 .../format.context/arg.pass.cpp               |    53 +
 .../format.context/ctor.pass.cpp              |   132 +
 .../format.context/locale.pass.cpp            |    85 +
 .../format.context/out.pass.cpp               |    70 +
 .../formatter.bool.pass.cpp                   |    81 +
 .../formatter.c_string.pass.cpp               |   137 +
 .../formatter.char.pass.cpp                   |   113 +
 .../formatter.char_array.pass.cpp             |   147 +
 .../formatter.const_char_array.pass.cpp       |   150 +
 .../formatter.floating_point.pass.cpp         |   486 +
 .../formatter.handle.pass.cpp                 |    77 +
 .../formatter.pointer.pass.cpp                |   108 +
 .../formatter.signed_integral.pass.cpp        |   122 +
 .../formatter.string.pass.cpp                 |   153 +
 .../formatter.unsigned_integral.pass.cpp      |   115 +
 .../format.parse.ctx/advance_to.pass.cpp      |    70 +
 .../format.parse.ctx/begin.pass.cpp           |    56 +
 .../format.parse.ctx/check_arg_id.pass.cpp    |    65 +
 .../format.parse.ctx/check_arg_id.verify.cpp  |    32 +
 .../format.parse.ctx/ctor.pass.cpp            |    77 +
 .../format.parse.ctx/end.pass.cpp             |    56 +
 .../format.parse.ctx/next_arg_id.pass.cpp     |    55 +
 .../format.parse.ctx/types.compile.pass.cpp   |    67 +
 .../format/format.functions/P2418.pass.cpp    |   127 +
 .../format/format.functions/ascii.pass.cpp    |   158 +
 .../escaped_output.ascii.pass.cpp             |   347 +
 .../escaped_output.unicode.pass.cpp           |   531 +
 .../format.functions/format.locale.pass.cpp   |    58 +
 .../format.functions/format.locale.verify.cpp |    90 +
 .../format/format.functions/format.pass.cpp   |    60 +
 .../format/format.functions/format.verify.cpp |   102 +
 .../format/format.functions/format_tests.h    |  2779 ++
 .../format_to.locale.pass.cpp                 |    81 +
 .../format_to.locale.verify.cpp               |    97 +
 .../format.functions/format_to.pass.cpp       |    77 +
 .../format.functions/format_to.verify.cpp     |    93 +
 .../format_to_n.locale.pass.cpp               |   117 +
 .../format_to_n.locale.verify.cpp             |    99 +
 .../format.functions/format_to_n.pass.cpp     |   111 +
 .../format.functions/format_to_n.verify.cpp   |    95 +
 .../formatted_size.locale.pass.cpp            |    55 +
 .../formatted_size.locale.verify.cpp          |    92 +
 .../format.functions/formatted_size.pass.cpp  |    52 +
 .../formatted_size.verify.cpp                 |    88 +
 .../locale-specific_form.pass.cpp             |  2329 ++
 .../format/format.functions/unicode.pass.cpp  |   305 +
 .../format.functions/vformat.locale.pass.cpp  |    65 +
 .../format/format.functions/vformat.pass.cpp  |    65 +
 .../vformat_to.locale.pass.cpp                |    88 +
 .../format.functions/vformat_to.pass.cpp      |    85 +
 .../format_kind.compile.pass.cpp              |   114 +
 .../format_kind.verify.cpp                    |    60 +
 .../range_format.compile.pass.cpp             |    30 +
 .../format.functions.format.pass.cpp          |    57 +
 .../format.functions.tests.h                  |   841 +
 .../format.functions.vformat.pass.cpp         |    70 +
 .../format.range.fmtmap/format.pass.cpp       |    74 +
 .../format.range.fmtmap/parse.pass.cpp        |    75 +
 .../format.functions.format.pass.cpp          |    57 +
 .../format.functions.tests.h                  |  1482 +
 .../format.functions.vformat.pass.cpp         |    70 +
 .../format.range.fmtset/format.pass.cpp       |    70 +
 .../format.range.fmtset/parse.pass.cpp        |    72 +
 .../format.functions.format.pass.cpp          |    58 +
 .../format.functions.tests.h                  |  1353 +
 .../format.functions.vformat.pass.cpp         |    71 +
 .../format.range.formatter/format.pass.cpp    |    75 +
 .../format.range.formatter/parse.pass.cpp     |    75 +
 .../set_brackets.pass.cpp                     |    73 +
 .../set_separator.pass.cpp                    |    72 +
 .../underlying.pass.cpp                       |    58 +
 .../format.syn/format_to_n_result.pass.cpp    |    52 +
 .../format.functions.format.pass.cpp          |    61 +
 .../format.functions.format.verify.cpp        |    51 +
 .../format.tuple/format.functions.tests.h     |   373 +
 .../format.functions.vformat.pass.cpp         |    71 +
 .../format/format.tuple/format.pass.cpp       |    77 +
 .../format/format.tuple/parse.pass.cpp        |    84 +
 .../format/format.tuple/set_brackets.pass.cpp |    67 +
 .../format.tuple/set_separator.pass.cpp       |    67 +
 .../arithmetic.operations/divides.pass.cpp    |    46 +
 .../arithmetic.operations/minus.pass.cpp      |    46 +
 .../arithmetic.operations/modulus.pass.cpp    |    46 +
 .../arithmetic.operations/multiplies.pass.cpp |    46 +
 .../arithmetic.operations/negate.pass.cpp     |    45 +
 .../arithmetic.operations/plus.pass.cpp       |    46 +
 .../transparent.pass.cpp                      |    60 +
 .../PR23141_invoke_not_constexpr.pass.cpp     |    38 +
 .../func.bind.bind/bind_return_type.pass.cpp  |   135 +
 .../func.bind/func.bind.bind/copy.pass.cpp    |    51 +
 .../invoke_function_object.pass.cpp           |    54 +
 .../func.bind.bind/invoke_int_0.pass.cpp      |    58 +
 .../func.bind.bind/invoke_lvalue.pass.cpp     |   293 +
 .../func.bind.bind/invoke_rvalue.pass.cpp     |   271 +
 .../func.bind.bind/invoke_void_0.pass.cpp     |    77 +
 .../func.bind/func.bind.bind/nested.pass.cpp  |    55 +
 .../is_bind_expression.pass.cpp               |    46 +
 .../is_bind_expression_03.pass.cpp            |    42 +
 .../func.bind.isbind/specialization.pass.cpp  |    57 +
 .../func.bind.isplace/is_placeholder.pass.cpp |    53 +
 .../func.bind.isplace/specialization.pass.cpp |    55 +
 .../func.bind.place/placeholders.pass.cpp     |    98 +
 .../bitwise.operations/bit_and.pass.cpp       |    66 +
 .../bitwise.operations/bit_not.pass.cpp       |    53 +
 .../bitwise.operations/bit_or.pass.cpp        |    66 +
 .../bitwise.operations/bit_xor.pass.cpp       |    70 +
 .../bitwise.operations/transparent.pass.cpp   |    49 +
 .../comparisons/compare_three_way.pass.cpp    |    82 +
 .../compare_three_way_functional.pass.cpp     |    26 +
 .../comparisons/constexpr_init.pass.cpp       |    47 +
 .../comparisons/equal_to.pass.cpp             |    48 +
 .../comparisons/greater.pass.cpp              |    58 +
 .../comparisons/greater_equal.pass.cpp        |    58 +
 .../comparisons/less.pass.cpp                 |    57 +
 .../comparisons/less_equal.pass.cpp           |    58 +
 .../comparisons/not_equal_to.pass.cpp         |    50 +
 .../comparisons/transparent.pass.cpp          |    60 +
 .../transparent_three_way.compile.pass.cpp    |    18 +
 .../func.bind_front/bind_front.pass.cpp       |   413 +
 .../func.bind_front/bind_front.verify.cpp     |    50 +
 .../func.def/nothing_to_do.pass.cpp           |    13 +
 .../func.identity/identity.pass.cpp           |    77 +
 .../func.invoke/invoke.pass.cpp               |   356 +
 .../func.invoke/invoke_constexpr.pass.cpp     |   282 +
 .../invoke_feature_test_macro.pass.cpp        |    40 +
 .../func.memfn/member_data.compile.fail.cpp   |    44 +
 .../func.memfn/member_data.pass.cpp           |    51 +
 .../func.memfn/member_function.pass.cpp       |    87 +
 .../func.memfn/member_function_const.pass.cpp |    90 +
 .../member_function_const_volatile.pass.cpp   |    81 +
 .../member_function_volatile.pass.cpp         |    81 +
 .../func.memfn/robust_against_adl.pass.cpp    |    53 +
 .../func.not_fn/not_fn.pass.cpp               |   462 +
 .../INVOKE_tested_elsewhere.pass.cpp          |    17 +
 .../func.require/binary_function.pass.cpp     |    30 +
 .../func.require/unary_function.pass.cpp      |    29 +
 .../func.search.bm/default.pass.cpp           |   141 +
 .../func.search/func.search.bm/hash.pass.cpp  |   126 +
 .../func.search.bm/hash.pred.pass.cpp         |   144 +
 .../func.search.bm/implicit_ctad.pass.cpp     |    41 +
 .../func.search/func.search.bm/pred.pass.cpp  |   135 +
 .../func.search.bmh/default.pass.cpp          |   130 +
 .../func.search/func.search.bmh/hash.pass.cpp |   125 +
 .../func.search.bmh/hash.pred.pass.cpp        |   138 +
 .../func.search.bmh/implicit_ctad.pass.cpp    |    41 +
 .../func.search/func.search.bmh/pred.pass.cpp |   132 +
 .../func.search.default/default.pass.cpp      |   113 +
 .../func.search.default/default.pred.pass.cpp |   122 +
 .../implicit_ctad.pass.cpp                    |    34 +
 .../bad_function_call.pass.cpp                |    31 +
 .../bad_function_call_ctor.pass.cpp           |    25 +
 .../func.wrap.func/addressof.pass.cpp         |    31 +
 .../func.wrap.func/derive_from.pass.cpp       |    31 +
 .../func.wrap.func/derive_from.verify.cpp     |    24 +
 .../func.wrap.func.alg/swap.pass.cpp          |   139 +
 .../func.wrap.func.cap/operator_bool.pass.cpp |    38 +
 .../func.wrap.func.con/F.pass.cpp             |   119 +
 .../func.wrap.func.con/F_assign.pass.cpp      |   138 +
 .../func.wrap.func.con/F_incomplete.pass.cpp  |    69 +
 .../func.wrap.func.con/F_nullptr.pass.cpp     |   250 +
 .../func.wrap.func.con/alloc.pass.cpp         |    32 +
 .../func.wrap.func.con/alloc.verify.cpp       |    28 +
 .../func.wrap.func.con/alloc_F.pass.cpp       |   134 +
 .../func.wrap.func.con/alloc_F.verify.cpp     |    31 +
 .../alloc_function.pass.cpp                   |   127 +
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 .../func.wrap.func.con/alloc_nullptr.pass.cpp |    30 +
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 .../alloc_rfunction.pass.cpp                  |   112 +
 .../alloc_rfunction.verify.cpp                |    60 +
 .../func.wrap.func.con/copy_assign.pass.cpp   |   143 +
 .../func.wrap.func.con/copy_move.pass.cpp     |   178 +
 .../ctad.static.compile.pass.cpp              |    41 +
 .../func.wrap.func.con/deduct_F.pass.cpp      |   137 +
 .../func.wrap.func.con/deduct_F.verify.cpp    |    33 +
 .../func.wrap.func.con/deduct_ptr.pass.cpp    |   112 +
 .../func.wrap.func.con/default.pass.cpp       |    28 +
 .../func.wrap.func.con/nullptr_t.pass.cpp     |    28 +
 .../nullptr_t_assign.pass.cpp                 |    78 +
 .../func.wrap.func.inv/invoke.pass.cpp        |   434 +
 .../func.wrap.func.inv/invoke.verify.cpp      |    27 +
 .../assign_F_alloc.pass.cpp                   |    67 +
 .../func.wrap.func.mod/swap.pass.cpp          |   199 +
 .../operator_==.pass.cpp                      |    46 +
 .../func.wrap.func.targ/target.pass.cpp       |   100 +
 .../func.wrap.func.targ/target_type.pass.cpp  |    68 +
 .../func.wrap/func.wrap.func/function_types.h |    65 +
 .../noncopyable_return_type.pass.cpp          |   145 +
 .../robust_against_adl.pass.cpp               |    53 +
 .../func.wrap/func.wrap.func/types.pass.cpp   |   121 +
 .../logical.operations/logical_and.pass.cpp   |    57 +
 .../logical.operations/logical_not.pass.cpp   |    47 +
 .../logical.operations/logical_or.pass.cpp    |    56 +
 .../logical.operations/transparent.pass.cpp   |    45 +
 .../binary_negate.depr_in_cxx17.verify.cpp    |    32 +
 .../negators/binary_negate.pass.cpp           |    36 +
 .../negators/not1.depr_in_cxx17.verify.cpp    |    30 +
 .../function.objects/negators/not1.pass.cpp   |    29 +
 .../negators/not2.depr_in_cxx17.verify.cpp    |    31 +
 .../function.objects/negators/not2.pass.cpp   |    31 +
 .../unary_negate.depr_in_cxx17.verify.cpp     |    31 +
 .../negators/unary_negate.pass.cpp            |    33 +
 .../operations.implicit_ctad.pass.cpp         |    98 +
 .../range.cmp/equal_to.pass.cpp               |    64 +
 .../range.cmp/greater.pass.cpp                |    63 +
 .../range.cmp/greater_equal.pass.cpp          |    63 +
 .../function.objects/range.cmp/less.pass.cpp  |    63 +
 .../range.cmp/less_equal.pass.cpp             |    64 +
 .../range.cmp/not_equal_to.pass.cpp           |    75 +
 .../refwrap/binder_typedefs.compile.pass.cpp  |    42 +
 .../refwrap.access/conversion.pass.cpp        |    48 +
 .../refwrap.assign/copy_assign.pass.cpp       |    80 +
 .../refwrap/refwrap.const/copy_ctor.pass.cpp  |    48 +
 .../refwrap.const/ctor.incomplete.pass.cpp    |    44 +
 .../refwrap/refwrap.const/deduct.pass.cpp     |    31 +
 .../refwrap.const/type_conv_ctor.pass.cpp     |    76 +
 .../refwrap.const/type_conv_ctor2.pass.cpp    |    65 +
 .../refwrap.const/type_ctor.compile.fail.cpp  |    23 +
 .../refwrap/refwrap.const/type_ctor.pass.cpp  |    64 +
 .../refwrap.helpers/cref.incomplete.pass.cpp  |    45 +
 .../refwrap/refwrap.helpers/cref_1.pass.cpp   |    36 +
 .../refwrap/refwrap.helpers/cref_2.pass.cpp   |    50 +
 .../refwrap/refwrap.helpers/lwg3146.pass.cpp  |    66 +
 .../refwrap.helpers/ref.incomplete.pass.cpp   |    45 +
 .../refwrap.helpers/ref_1.compile.fail.cpp    |    29 +
 .../refwrap/refwrap.helpers/ref_1.pass.cpp    |    36 +
 .../refwrap/refwrap.helpers/ref_2.pass.cpp    |    67 +
 .../refwrap.invoke/invoke.compile.fail.cpp    |    53 +
 .../invoke.incomplete.compile.fail.cpp        |    38 +
 .../refwrap/refwrap.invoke/invoke.pass.cpp    |   332 +
 .../refwrap.invoke/invoke_int_0.pass.cpp      |    79 +
 .../refwrap.invoke/invoke_void_0.pass.cpp     |    71 +
 .../robust_against_adl.pass.cpp               |    49 +
 .../function.objects/refwrap/type.pass.cpp    |    40 +
 .../refwrap/type_properties.pass.cpp          |    62 +
 .../refwrap/unwrap_ref_decay.pass.cpp         |    61 +
 .../refwrap/unwrap_reference.pass.cpp         |    54 +
 .../refwrap/weak_result.pass.cpp              |   104 +
 .../unord.hash/enabled_hashes.pass.cpp        |    26 +
 .../unord.hash/enum.compile.fail.cpp          |    25 +
 .../function.objects/unord.hash/enum.pass.cpp |    65 +
 .../unord.hash/floating.pass.cpp              |    78 +
 .../unord.hash/integral.pass.cpp              |   119 +
 .../unord.hash/non_enum.pass.cpp              |    39 +
 .../unord.hash/pointer.pass.cpp               |    67 +
 .../intseq.general/integer_seq.pass.cpp       |    83 +
 .../integer_seq.compile.fail.cpp              |    33 +
 .../intseq/intseq.intseq/integer_seq.pass.cpp |    49 +
 .../intseq.make/make_integer_seq.fail.cpp     |    38 +
 .../intseq.make/make_integer_seq.pass.cpp     |    35 +
 ...make_integer_seq_fallback.compile.fail.cpp |    20 +
 .../make_integer_seq_fallback.pass.cpp        |    19 +
 .../allocator.tag/allocator_arg.fail.cpp      |    25 +
 .../allocator.tag/allocator_arg.pass.cpp      |    25 +
 .../allocate_at_least.pass.cpp                |    70 +
 .../allocate.pass.cpp                         |    63 +
 .../allocate.verify.cpp                       |    52 +
 .../allocate_hint.pass.cpp                    |    90 +
 .../construct.pass.cpp                        |   178 +
 .../deallocate.pass.cpp                       |    70 +
 .../allocator.traits.members/destroy.pass.cpp |   134 +
 .../incomplete_type_helper.h                  |    14 +
 .../max_size.pass.cpp                         |    90 +
 ...ct_on_container_copy_construction.pass.cpp |    87 +
 .../const_pointer.pass.cpp                    |    68 +
 .../const_void_pointer.pass.cpp               |    70 +
 .../difference_type.pass.cpp                  |    79 +
 .../is_always_equal.pass.cpp                  |    55 +
 .../allocator.traits.types/pointer.pass.cpp   |    55 +
 ...gate_on_container_copy_assignment.pass.cpp |    55 +
 ...gate_on_container_move_assignment.pass.cpp |    56 +
 .../propagate_on_container_swap.pass.cpp      |    54 +
 .../rebind_alloc.pass.cpp                     |   102 +
 .../allocator.traits.types/size_type.pass.cpp |    77 +
 .../void_pointer.pass.cpp                     |    69 +
 .../allocator.traits/allocator_type.pass.cpp  |    34 +
 .../allocator.traits/rebind_traits.pass.cpp   |    82 +
 .../allocator.traits/value_type.pass.cpp      |    34 +
 .../allocator.uses.construction/common.h      |    72 +
 .../make_obj_using_allocator.pass.cpp         |   142 +
 ...ialized_construct_using_allocator.pass.cpp |   188 +
 .../uses_allocator_construction_args.pass.cpp |   155 +
 .../uses_allocator.pass.cpp                   |    76 +
 .../memory/c.malloc/nothing_to_do.pass.cpp    |    15 +
 .../PR50299.compile.pass.cpp                  |    20 +
 .../default.allocator/allocator.ctor.pass.cpp |    49 +
 .../default.allocator/allocator.dtor.pass.cpp |    40 +
 .../allocator.globals/eq.pass.cpp             |    45 +
 .../allocate.constexpr.size.verify.cpp        |    41 +
 .../allocator.members/allocate.pass.cpp       |   114 +
 .../allocator.members/allocate.size.pass.cpp  |    51 +
 .../allocator.members/allocate.verify.cpp     |    27 +
 .../allocate_at_least.pass.cpp                |   109 +
 .../allocator_pointers.pass.cpp               |   124 +
 ...cator_types.deprecated_in_cxx17.verify.cpp |    52 +
 .../allocator_types.pass.cpp                  |    66 +
 ...llocator_types.removed_in_cxx20.verify.cpp |    47 +
 .../allocator_types.void.compile.pass.cpp     |    35 +
 .../pointer.conversion/to_address.pass.cpp    |   163 +
 .../to_address_on_funcptr.verify.cpp          |    22 +
 .../to_address_on_function.verify.cpp         |    22 +
 .../to_address_std_iterators.pass.cpp         |    54 +
 .../pointer.traits/difference_type.pass.cpp   |    28 +
 .../pointer.traits/element_type.pass.cpp      |    28 +
 .../memory/pointer.traits/pointer.pass.cpp    |    35 +
 .../pointer_to.pass.cpp                       |    53 +
 .../difference_type.pass.cpp                  |    67 +
 .../element_type.pass.cpp                     |    69 +
 .../pointer.traits.types/rebind.pass.cpp      |   106 +
 .../memory/pointer.traits/pointer_to.pass.cpp |    54 +
 .../memory/pointer.traits/rebind.pass.cpp     |    32 +
 .../utilities/memory/ptr.align/align.pass.cpp |    88 +
 .../assume_aligned.nodiscard.verify.cpp       |    21 +
 .../memory/ptr.align/assume_aligned.pass.cpp  |    88 +
 .../memory/specialized.algorithms/buffer.h    |    25 +
 .../memory/specialized.algorithms/counted.h   |    85 +
 .../specialized.addressof/addressof.pass.cpp  |    54 +
 .../addressof.temp.compile.fail.cpp           |    27 +
 .../constexpr_addressof.pass.cpp              |    44 +
 .../construct_at.pass.cpp                     |   124 +
 .../ranges_construct_at.pass.cpp              |   138 +
 .../specialized.destroy/destroy.pass.cpp      |   116 +
 .../specialized.destroy/destroy_at.pass.cpp   |   141 +
 .../specialized.destroy/destroy_n.pass.cpp    |   119 +
 .../ranges_destroy.pass.cpp                   |   221 +
 .../ranges_destroy_at.pass.cpp                |   159 +
 .../ranges_destroy_n.pass.cpp                 |   143 +
 ...s_uninitialized_default_construct.pass.cpp |   192 +
 ...uninitialized_default_construct_n.pass.cpp |    91 +
 .../uninitialized_default_construct.pass.cpp  |    94 +
 ...uninitialized_default_construct_n.pass.cpp |    97 +
 ...ges_uninitialized_value_construct.pass.cpp |   212 +
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 .../uninitialized_value_construct.pass.cpp    |   112 +
 .../uninitialized_value_construct_n.pass.cpp  |   116 +
 .../ranges_uninitialized_copy.pass.cpp        |   400 +
 .../ranges_uninitialized_copy_n.pass.cpp      |   165 +
 .../uninitialized_copy.pass.cpp               |    90 +
 .../uninitialized_copy_n.pass.cpp             |    89 +
 .../ranges_uninitialized_fill_n.pass.cpp      |   119 +
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 .../ranges_uninitialized_fill.pass.cpp        |   231 +
 .../uninitialized_fill.pass.cpp               |    86 +
 .../ranges_uninitialized_move.pass.cpp        |   439 +
 .../ranges_uninitialized_move_n.pass.cpp      |   195 +
 .../uninitialized_move.pass.cpp               |   115 +
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 .../storage.iterator/deprecated.verify.cpp    |    17 +
 .../raw_storage_iterator.base.pass.cpp        |    54 +
 .../raw_storage_iterator.pass.cpp             |    70 +
 .../storage.iterator/types.compile.pass.cpp   |    33 +
 .../memory/temporary.buffer/depr.verify.cpp   |    18 +
 .../temporary.buffer/overaligned.pass.cpp     |    47 +
 .../temporary_buffer.pass.cpp                 |    35 +
 ...rator_concept_conformance.compile.pass.cpp |    32 +
 .../unique.ptr/unique.ptr.special/io.fail.cpp |    38 +
 .../unique.ptr/unique.ptr.special/io.pass.cpp |    37 +
 .../enable_shared_from_this.pass.cpp          |   173 +
 .../util.smartptr.hash/enabled_hash.pass.cpp  |    28 +
 .../hash_shared_ptr.pass.cpp                  |    49 +
 .../hash_unique_ptr.pass.cpp                  |   103 +
 .../atomic_compare_exchange_strong.pass.cpp   |    53 +
 ..._compare_exchange_strong_explicit.pass.cpp |    58 +
 .../atomic_compare_exchange_weak.pass.cpp     |    51 +
 ...ic_compare_exchange_weak_explicit.pass.cpp |    58 +
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 .../atomic_is_lock_free.pass.cpp              |    34 +
 .../atomic_load.pass.cpp                      |    35 +
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 ...rator_concept_conformance.compile.pass.cpp |    32 +
 .../util.smartptr.shared/types.pass.cpp       |    65 +
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 .../util.smartptr.shared.cmp/cmp.pass.cpp     |    76 +
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 create mode 100644 app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.cpp
 create mode 100644 app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.hpp
 create mode 100644 app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp
 create mode 100644 app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.hpp
 create mode 100644 app/src/main/cpp/libcxx/utils/CMakeLists.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/adb_run.py
 create mode 100644 app/src/main/cpp/libcxx/utils/cat_files.py
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/BOT_OWNERS.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/Dockerfile
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/Dockerfile.android
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/android-create-avd.sh
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/android-set-user.sh
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/apple-install-libcxx.sh
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-clang.yml
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-premerge.sh
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-snapshot.sh
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline.yml
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/generate-buildkite-pipeline
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/macos-ci-setup
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/oss-fuzz.sh
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/run-buildbot
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/run-buildbot-container
 create mode 100644 app/src/main/cpp/libcxx/utils/ci/run-buildbot-container-android
 create mode 100644 app/src/main/cpp/libcxx/utils/data/unicode/DerivedCoreProperties.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/data/unicode/DerivedGeneralCategory.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakProperty.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakTest.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/data/unicode/README.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/data/unicode/emoji-data.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/gdb/libcxx/printers.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_abi_list.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_escaped_output_table.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_table.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_test.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_feature_test_macro_components.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_header_inclusion_tests.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_header_tests.py
 create mode 100644 app/src/main/cpp/libcxx/utils/generate_iwyu_mapping.py
 create mode 100644 app/src/main/cpp/libcxx/utils/graph_header_deps.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/__init__.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/sym_check/__init__.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/sym_check/diff.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/sym_check/extract.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/sym_check/match.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/sym_check/util.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/__init__.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/dsl.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/features.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/format.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/googlebenchmark.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/newconfig.py
 create mode 100644 app/src/main/cpp/libcxx/utils/libcxx/test/params.py
 create mode 100644 app/src/main/cpp/libcxx/utils/run.py
 create mode 100644 app/src/main/cpp/libcxx/utils/ssh.py
 create mode 100644 app/src/main/cpp/libcxx/utils/sym_diff.py
 create mode 100644 app/src/main/cpp/libcxx/utils/symcheck-blacklists/linux_blacklist.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/symcheck-blacklists/osx_blacklist.txt
 create mode 100644 app/src/main/cpp/libcxx/utils/zos_rename_dll_side_deck.sh
 delete mode 100644 app/src/main/cpp/libcxx/x86/libcxx.a
 delete mode 100644 app/src/main/cpp/libcxx/x86_64/libcxx.a
 create mode 100644 app/src/main/cpp/shadowhook/CMakeLists.txt
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_a32.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_a32.h
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_inst.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_inst.h
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_t16.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_t16.h
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_t32.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_t32.h
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_txx.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm/sh_txx.h
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm64/sh_a64.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm64/sh_a64.h
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm64/sh_inst.c
 create mode 100644 app/src/main/cpp/shadowhook/arch/arm64/sh_inst.h
 create mode 100644 app/src/main/cpp/shadowhook/common/bytesig.c
 create mode 100644 app/src/main/cpp/shadowhook/common/bytesig.h
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_config.h
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_errno.c
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_errno.h
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_log.c
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_log.h
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_sig.h
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_trampo.c
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_trampo.h
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_util.c
 create mode 100644 app/src/main/cpp/shadowhook/common/sh_util.h
 create mode 100644 app/src/main/cpp/shadowhook/include/shadowhook.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_enter.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_enter.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_exit.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_exit.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_hub.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_hub.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_jni.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_linker.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_linker.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_recorder.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_recorder.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_safe.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_safe.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_switch.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_switch.h
 create mode 100644 app/src/main/cpp/shadowhook/sh_task.c
 create mode 100644 app/src/main/cpp/shadowhook/sh_task.h
 create mode 100644 app/src/main/cpp/shadowhook/shadowhook.c
 create mode 100644 app/src/main/cpp/shadowhook/shadowhook.map.txt
 create mode 100644 app/src/main/cpp/shadowhook/third_party/bsd/queue.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/bsd/tree.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/lss/LICENSE
 create mode 100644 app/src/main/cpp/shadowhook/third_party/lss/linux_syscall_support.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/LICENSE
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl.c
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.c
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.c
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.c
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.h
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.c
 create mode 100644 app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.h
 create mode 100644 app/src/main/java/es/chiteroman/playintegrityfix/CustomKeyStoreSpi.java

diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index aa851fd..6680155 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -2,6 +2,6 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="" vcs="Git" />
-    <mapping directory="$PROJECT_DIR$/app/src/main/cpp/Dobby" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/app/src/main/cpp/libcxx" vcs="Git" />
   </component>
 </project>
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index c633c66..0cbf0a3 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -8,31 +8,18 @@ android {
     ndkVersion = "26.1.10909125"
     buildToolsVersion = "34.0.0"
 
-    packaging {
-        jniLibs {
-            excludes += "**/liblog.so"
-            excludes += "**/libdobby.so"
-        }
-    }
-
     defaultConfig {
         applicationId = "es.chiteroman.playintegrityfix"
         minSdk = 26
         targetSdk = 34
-        versionCode = 15200
-        versionName = "v15.2"
+        versionCode = 15300
+        versionName = "v15.3"
 
         externalNativeBuild {
-            cmake {
-                arguments += "-DANDROID_STL=none"
-                arguments += "-DCMAKE_BUILD_TYPE=MinSizeRel"
-                arguments += "-DPlugin.Android.BionicLinkerUtil=ON"
-
-                cppFlags += "-std=c++20"
-                cppFlags += "-fno-exceptions"
-                cppFlags += "-fno-rtti"
-                cppFlags += "-fvisibility=hidden"
-                cppFlags += "-fvisibility-inlines-hidden"
+            ndk {
+                abiFilters += "arm64-v8a"
+                abiFilters += "armeabi-v7a"
+                jobs = Runtime.getRuntime().availableProcessors()
             }
         }
     }
@@ -53,9 +40,8 @@ android {
     }
 
     externalNativeBuild {
-        cmake {
-            path = file("src/main/cpp/CMakeLists.txt")
-            version = "3.22.1"
+        ndkBuild {
+            path = file("src/main/cpp/Android.mk")
         }
     }
 }
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index e6b9f2d..c65bd56 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,2 +1,3 @@
 -keep class es.chiteroman.playintegrityfix.EntryPoint {public <methods>;}
--keep class es.chiteroman.playintegrityfix.CustomProvider
\ No newline at end of file
+-keep class es.chiteroman.playintegrityfix.CustomProvider
+-keep class es.chiteroman.playintegrityfix.CustomKeyStoreSpi
\ No newline at end of file
diff --git a/app/src/main/cpp/Android.mk b/app/src/main/cpp/Android.mk
new file mode 100644
index 0000000..dbcf9d4
--- /dev/null
+++ b/app/src/main/cpp/Android.mk
@@ -0,0 +1,31 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := zygisk
+LOCAL_SRC_FILES := $(LOCAL_PATH)/main.cpp
+LOCAL_C_INCLUDES := $(LOCAL_PATH)
+
+LOCAL_SRC_FILES += $(wildcard $(LOCAL_PATH)/shadowhook/*.c)
+LOCAL_SRC_FILES += $(wildcard $(LOCAL_PATH)/shadowhook/common/*.c)
+LOCAL_SRC_FILES += $(wildcard $(LOCAL_PATH)/shadowhook/third_party/xdl/*.c)
+
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/common
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/include
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/third_party/bsd
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/third_party/lss
+LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/third_party/xdl
+
+ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
+  LOCAL_SRC_FILES += $(wildcard $(LOCAL_PATH)/shadowhook/arch/arm/*.c)
+  LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/arch/arm
+else ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
+  LOCAL_SRC_FILES += $(wildcard $(LOCAL_PATH)/shadowhook/arch/arm64/*.c)
+  LOCAL_C_INCLUDES += $(LOCAL_PATH)/shadowhook/arch/arm64
+endif
+
+LOCAL_STATIC_LIBRARIES := libcxx
+LOCAL_LDLIBS := -llog
+include $(BUILD_SHARED_LIBRARY)
+
+include $(LOCAL_PATH)/libcxx/Android.mk
\ No newline at end of file
diff --git a/app/src/main/cpp/Application.mk b/app/src/main/cpp/Application.mk
new file mode 100644
index 0000000..b054338
--- /dev/null
+++ b/app/src/main/cpp/Application.mk
@@ -0,0 +1,5 @@
+APP_STL      := none
+APP_ABI      := arm64-v8a armeabi-v7a
+APP_CFLAGS   := -Oz -flto -fvisibility=hidden -fvisibility-inlines-hidden
+APP_CPPFLAGS := -std=c++20 -fno-exceptions -fno-rtti
+APP_LDFLAGS  := -Oz -flto
\ No newline at end of file
diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
deleted file mode 100644
index e0525a2..0000000
--- a/app/src/main/cpp/CMakeLists.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-cmake_minimum_required(VERSION 3.22.1)
-
-project("playintegrityfix")
-
-include_directories(${CMAKE_SOURCE_DIR}/libcxx/include)
-
-link_libraries(${CMAKE_SOURCE_DIR}/libcxx/${CMAKE_ANDROID_ARCH_ABI}/libcxx.a)
-
-add_library(${CMAKE_PROJECT_NAME} SHARED
-        main.cpp)
-
-if (NOT TARGET dobby)
-    set(DOBBY_DIR ${CMAKE_SOURCE_DIR}/Dobby)
-    macro(SET_OPTION option value)
-        set(${option} ${value} CACHE INTERNAL "" FORCE)
-    endmacro()
-    SET_OPTION(DOBBY_DEBUG OFF)
-    SET_OPTION(DOBBY_GENERATE_SHARED OFF)
-    SET_OPTION(Plugin.Android.BionicLinkerUtil ON)
-    add_subdirectory(${DOBBY_DIR} dobby)
-    get_property(DOBBY_INCLUDE_DIRECTORIES
-            TARGET dobby
-            PROPERTY INCLUDE_DIRECTORIES)
-    include_directories(
-            .
-            ${DOBBY_INCLUDE_DIRECTORIES}
-            $<TARGET_PROPERTY:dobby,INCLUDE_DIRECTORIES>
-    )
-endif ()
-
-target_link_libraries(${CMAKE_PROJECT_NAME}
-        log
-        dobby)
\ No newline at end of file
diff --git a/app/src/main/cpp/Dobby b/app/src/main/cpp/Dobby
deleted file mode 160000
index 6813ca7..0000000
--- a/app/src/main/cpp/Dobby
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 6813ca76ddeafcaece525bf8c6cde7ff4c21d3ce
diff --git a/app/src/main/cpp/libcxx/.clang-format b/app/src/main/cpp/libcxx/.clang-format
new file mode 100644
index 0000000..77ffa23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/.clang-format
@@ -0,0 +1,88 @@
+BasedOnStyle: LLVM
+
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: Consecutive
+AlignConsecutiveBitFields: Consecutive
+AlignEscapedNewlines: Right
+AlignOperands: AlignAfterOperator
+AlignTrailingComments: true
+AllowAllArgumentsOnNextLine: true
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortFunctionsOnASingleLine: true
+AllowShortLambdasOnASingleLine: All
+AttributeMacros: ['_LIBCPP_HIDE_FROM_ABI',
+                  '_LIBCPP_CONSTEXPR',
+                  '_LIBCPP_CONSTEXPR_SINCE_CXX14',
+                  '_LIBCPP_CONSTEXPR_SINCE_CXX17',
+                  '_LIBCPP_CONSTEXPR_SINCE_CXX20',
+                  '_LIBCPP_CONSTEXPR_SINCE_CXX23',
+                  '_LIBCPP_ALIGNOF',
+                  '_ALIGNAS_TYPE',
+                  '_ALIGNAS',
+                  '_LIBCPP_NORETURN',
+                  '_LIBCPP_ALWAYS_INLINE',
+                  '_LIBCPP_DISABLE_EXTENTSION_WARNING',
+                  '_LIBCPP_HIDDEN',
+                  '_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS',
+                  '_LIBCPP_FUNC_VIS',
+                  '_LIBCPP_TYPE_VIS',
+                  '_LIBCPP_TEMPLATE_VIS',
+                  '_LIBCPP_TEMPLATE_DATA_VIS',
+                  '_LIBCPP_EXPORTED_FROM_ABI',
+                  '_LIBCPP_OVERRIDABLE_FUNC_VIS',
+                  '_LIBCPP_EXCEPTION_ABI',
+                  '_LIBCPP_ENUM_VIS',
+                  '_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS',
+                  '_LIBCPP_INTERNAL_LINKAGE',
+                  '_LIBCPP_EXCLUDE_FROM_EXPLICIT_INSTANTIATION',
+                  '_LIBCPP_HIDE_FROM_ABI_AFTER_V1',
+                  '_LIBCPP_INLINE_VISIBILITY',
+                  '_LIBCPP_CONSTEVAL',
+                  '_LIBCPP_NOALIAS',
+                  '_LIBCPP_USING_IF_EXISTS',
+                  '_LIBCPP_DEPRECATED',
+                  '_LIBCPP_DEPRECATED_IN_CXX11',
+                  '_LIBCPP_DEPRECATED_IN_CXX14',
+                  '_LIBCPP_DEPRECATED_IN_CXX17',
+                  '_LIBCPP_DEPRECATED_IN_CXX20',
+                  '_LIBCPP_NODISCARD',
+                  '_LIBCPP_NODISCARD_EXT',
+                  '_LIBCPP_NO_DESTROY',
+                  '_LIBCPP_WEAK',
+                  '_LIBCPP_CONSTINIT',
+                  '_LIBCPP_FALLTHROUGH',
+                  '_LIBCPP_STANDALONE_DEBUG',
+                  '_LIBCPP_NO_UNIQUE_ADDRESS',
+                 ]
+BinPackArguments: false
+BinPackParameters: false
+BreakBeforeConceptDeclarations: true
+BreakInheritanceList: BeforeColon
+EmptyLineAfterAccessModifier: Never
+EmptyLineBeforeAccessModifier: Always
+IndentWrappedFunctionNames: false
+IndentRequires: true
+InsertTrailingCommas: Wrapped
+KeepEmptyLinesAtTheStartOfBlocks: false
+MaxEmptyLinesToKeep: 1
+PackConstructorInitializers: NextLine
+
+PenaltyIndentedWhitespace: 2
+
+Language: Cpp
+Standard: c++20
+SpacesInAngles: Leave
+
+AlwaysBreakTemplateDeclarations: true
+PointerAlignment: Left
+
+
+# Disable formatting options which may break tests.
+SortIncludes: false
+ReflowComments: false
+
+# libc++'s preferred indentions of preprocessor statements.
+IndentPPDirectives: AfterHash
+
+# libc++ has some long names so we need more than the 80 column limit imposed by LLVM style, for sensible formatting
+ColumnLimit: 120
diff --git a/app/src/main/cpp/libcxx/.clang-tidy b/app/src/main/cpp/libcxx/.clang-tidy
new file mode 100644
index 0000000..4bc25c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/.clang-tidy
@@ -0,0 +1,67 @@
+Checks: >
+  bugprone-copy-constructor-init,
+  bugprone-dangling-handle,
+  bugprone-infinite-loop,
+  bugprone-stringview-nullptr,
+  bugprone-use-after-move,
+
+  llvm-include-order,
+  llvm-namespace-comment,
+
+  misc-definitions-in-headers,
+  misc-misplaced-const,
+  misc-non-copyable-objects,
+  misc-uniqueptr-reset-release,
+
+  modernize-loop-convert,
+  modernize-redundant-void-arg,
+  modernize-use-override,
+
+  readability-duplicate-include,
+  readability-identifier-naming,
+  readability-function-cognitive-complexity,
+  readability-function-size,
+  readability-misplaced-array-index,
+  readability-redundant-control-flow,
+  readability-redundant-function-ptr-dereference,
+  readability-redundant-preprocessor,
+  readability-simplify-boolean-expr,
+  readability-simplify-subscript-expr,
+  readability-uniqueptr-delete-release,
+
+CheckOptions:
+  - key:   readability-function-cognitive-complexity.Threshold
+    value: 143 # TODO: bring that number down
+  - key:   readability-function-size.LineThreshold
+    value: 194 # TODO: bring that number down
+  - key:   readability-identifier-naming.GetConfigPerFile
+    value: false
+  - key:   readability-identifier-naming.ParameterCase
+    value: lower_case
+  - key:   readability-identifier-naming.ParameterPrefix
+    value: __
+  - key:   readability-identifier-naming.PrivateMemberCase
+    value: lower_case
+  - key:   readability-identifier-naming.PrivateMemberPrefix
+    value: __
+  - key:   readability-identifier-naming.PrivateMemberSuffix
+    value: _
+
+# TODO: investigate these checks
+# bugprone-branch-clone,
+# bugprone-macro-parentheses,
+# cppcoreguidelines-prefer-member-initializer,
+# misc-unused-parameters,
+# modernize-use-bool-literals,
+# modernize-use-default-member-init,
+# modernize-use-equals-default,
+# modernize-use-equals-delete,
+# modernize-use-nullptr,
+# portability-restrict-system-includes,
+# readability-function-cognitive-complexity,
+# readability-implicit-bool-conversion,
+# readability-isolate-declaration,
+# readability-redundant-access-specifiers,
+# readability-redundant-declaration,
+# readability-redundant-member-init,
+#
diff --git a/app/src/main/cpp/libcxx/.gitignore b/app/src/main/cpp/libcxx/.gitignore
new file mode 100644
index 0000000..4b214ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/.gitignore
@@ -0,0 +1,55 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+#lib/ # We actually have things checked in to lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.cache
+nosetests.xml
+coverage.xml
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# MSVC libraries test harness
+env.lst
+keep.lst
+
+# Editor by-products
+.vscode/
diff --git a/app/src/main/cpp/libcxx/Android.mk b/app/src/main/cpp/libcxx/Android.mk
new file mode 100644
index 0000000..55b8705
--- /dev/null
+++ b/app/src/main/cpp/libcxx/Android.mk
@@ -0,0 +1,114 @@
+# This file is dual licensed under the MIT and the University of Illinois Open
+# Source Licenses. See LICENSE.TXT for details.
+
+LOCAL_PATH := $(call my-dir)
+
+# libcxx defines
+libcxx_includes := $(LOCAL_PATH)/include $(LOCAL_PATH)/src
+libcxx_export_includes := $(libcxx_includes)
+libcxx_sources := \
+    algorithm.cpp \
+    any.cpp \
+    atomic.cpp \
+    barrier.cpp \
+    bind.cpp \
+    charconv.cpp \
+    chrono.cpp \
+    condition_variable.cpp \
+    condition_variable_destructor.cpp \
+    debug.cpp \
+    exception.cpp \
+    filesystem/directory_iterator.cpp \
+    filesystem/int128_builtins.cpp \
+    filesystem/operations.cpp \
+    functional.cpp \
+    future.cpp \
+    hash.cpp \
+    ios.cpp \
+    ios.instantiations.cpp \
+    iostream.cpp \
+    legacy_debug_handler.cpp \
+    legacy_pointer_safety.cpp \
+    locale.cpp \
+    memory.cpp \
+    memory_resource.cpp \
+    mutex.cpp \
+    mutex_destructor.cpp \
+    new.cpp \
+    optional.cpp \
+    random_shuffle.cpp \
+    random.cpp \
+    regex.cpp \
+    shared_mutex.cpp \
+    stdexcept.cpp \
+    string.cpp \
+    strstream.cpp \
+    system_error.cpp \
+    thread.cpp \
+    typeinfo.cpp \
+    utility.cpp \
+    valarray.cpp \
+    variant.cpp \
+    vector.cpp \
+    verbose_abort.cpp \
+
+libcxx_sources := $(libcxx_sources:%=src/%)
+
+libcxx_export_cxxflags :=
+
+libcxx_cxxflags := \
+    -std=c++20 \
+    -fvisibility-global-new-delete-hidden \
+    -fvisibility=hidden -fvisibility-inlines-hidden \
+    -DLIBCXX_BUILDING_LIBCXXABI \
+    -D_LIBCPP_NO_EXCEPTIONS \
+    -D_LIBCPP_NO_RTTI \
+    -D_LIBCPP_BUILDING_LIBRARY \
+    -D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS \
+    -D__STDC_FORMAT_MACROS \
+    $(libcxx_export_cxxflags) \
+
+
+libcxx_ldflags :=
+libcxx_export_ldflags :=
+
+# libcxxabi defines
+libcxxabi_src_files := \
+    abort_message.cpp \
+    cxa_aux_runtime.cpp \
+    cxa_default_handlers.cpp \
+    cxa_exception_storage.cpp \
+    cxa_guard.cpp \
+    cxa_handlers.cpp \
+    cxa_noexception.cpp \
+    cxa_thread_atexit.cpp \
+    cxa_vector.cpp \
+    cxa_virtual.cpp \
+    stdlib_exception.cpp \
+    stdlib_new_delete.cpp \
+    stdlib_stdexcept.cpp \
+    stdlib_typeinfo.cpp \
+
+libcxxabi_src_files := $(libcxxabi_src_files:%=src/abi/%)
+
+libcxxabi_includes := \
+    $(LOCAL_PATH)/include \
+    $(LOCAL_PATH)/include/abi \
+
+libcxxabi_cflags := -D__STDC_FORMAT_MACROS
+libcxxabi_cppflags := \
+    -D_LIBCXXABI_NO_EXCEPTIONS \
+    -Wno-macro-redefined \
+    -Wno-unknown-attributes \
+    -DHAS_THREAD_LOCAL
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libcxx
+LOCAL_SRC_FILES := $(libcxx_sources) $(libcxxabi_src_files)
+LOCAL_C_INCLUDES := $(libcxx_includes) $(libcxxabi_includes)
+LOCAL_CPPFLAGS := $(libcxx_cxxflags) $(libcxxabi_cppflags) -ffunction-sections -fdata-sections
+LOCAL_EXPORT_C_INCLUDES := $(libcxx_export_includes)
+LOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags)
+LOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags)
+
+include $(BUILD_STATIC_LIBRARY)
diff --git a/app/src/main/cpp/libcxx/CMakeLists.txt b/app/src/main/cpp/libcxx/CMakeLists.txt
new file mode 100644
index 0000000..74eff20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/CMakeLists.txt
@@ -0,0 +1,937 @@
+# See https://libcxx.llvm.org/docs/BuildingLibcxx.html for instructions on how
+# to build libcxx with CMake.
+
+#===============================================================================
+# Setup Project
+#===============================================================================
+cmake_minimum_required(VERSION 3.13.4)
+
+set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
+
+# Add path for custom modules
+list(INSERT CMAKE_MODULE_PATH 0
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
+  "${LLVM_COMMON_CMAKE_UTILS}"
+  "${LLVM_COMMON_CMAKE_UTILS}/Modules"
+  )
+
+set(CMAKE_FOLDER "libc++")
+
+set(LIBCXX_SOURCE_DIR  ${CMAKE_CURRENT_SOURCE_DIR})
+set(LIBCXX_BINARY_DIR  ${CMAKE_CURRENT_BINARY_DIR})
+set(LIBCXX_BINARY_INCLUDE_DIR "${LIBCXX_BINARY_DIR}/include/c++build")
+
+include(GNUInstallDirs)
+
+# Require out of source build.
+include(MacroEnsureOutOfSourceBuild)
+MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
+ "${PROJECT_NAME} requires an out of source build. Please create a separate
+ build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
+ )
+if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" AND "${CMAKE_CXX_SIMULATE_ID}" STREQUAL "MSVC")
+  message(STATUS "Configuring for clang-cl")
+  set(LIBCXX_TARGETING_CLANG_CL ON)
+endif()
+
+if (MSVC)
+  set(LIBCXX_TARGETING_MSVC ON)
+  message(STATUS "Configuring for MSVC")
+else()
+  set(LIBCXX_TARGETING_MSVC OFF)
+endif()
+
+#===============================================================================
+# Setup CMake Options
+#===============================================================================
+include(CMakeDependentOption)
+include(HandleCompilerRT)
+
+# Basic options ---------------------------------------------------------------
+option(LIBCXX_ENABLE_ASSERTIONS
+  "Enable assertions inside the compiled library, and at the same time make it the
+   default when compiling user code. Note that assertions can be enabled or disabled
+   by users in their own code regardless of this option." OFF)
+option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
+option(LIBCXX_ENABLE_STATIC "Build libc++ as a static library." ON)
+set(ENABLE_FILESYSTEM_DEFAULT ON)
+if (WIN32 AND NOT MINGW)
+  # Filesystem is buildable for windows, but it requires __int128 helper
+  # functions, that currently are provided by libgcc or compiler_rt builtins.
+  # These are available in MinGW environments, but not currently in MSVC
+  # environments.
+  set(ENABLE_FILESYSTEM_DEFAULT OFF)
+endif()
+option(LIBCXX_ENABLE_FILESYSTEM "Build filesystem as part of the main libc++ library"
+    ${ENABLE_FILESYSTEM_DEFAULT})
+option(LIBCXX_INCLUDE_TESTS "Build the libc++ tests." ${LLVM_INCLUDE_TESTS})
+option(LIBCXX_ENABLE_PARALLEL_ALGORITHMS "Enable the parallel algorithms library. This requires the PSTL to be available." OFF)
+option(LIBCXX_ENABLE_DEBUG_MODE
+  "Whether to build libc++ with the debug mode enabled.
+   By default, this is turned off. Turning it on results in a different ABI (additional
+   symbols but also potentially different layouts of types), and one should not mix code
+   built against a dylib that has debug mode and code built against a regular dylib." OFF)
+option(LIBCXX_ENABLE_RANDOM_DEVICE
+  "Whether to include support for std::random_device in the library. Disabling
+   this can be useful when building the library for platforms that don't have
+   a source of randomness, such as some embedded platforms. When this is not
+   supported, most of <random> will still be available, but std::random_device
+   will not." ON)
+option(LIBCXX_ENABLE_LOCALIZATION
+  "Whether to include support for localization in the library. Disabling
+   localization can be useful when porting to platforms that don't support
+   the C locale API (e.g. embedded). When localization is not supported,
+   several parts of the library will be disabled: <iostream>, <regex>, <locale>
+   will be completely unusable, and other parts may be only partly available." ON)
+option(LIBCXX_ENABLE_UNICODE
+  "Whether to include support for Unicode in the library. Disabling Unicode can
+   be useful when porting to platforms that don't support UTF-8 encoding (e.g.
+   embedded)." ON)
+option(LIBCXX_ENABLE_WIDE_CHARACTERS
+  "Whether to include support for wide characters in the library. Disabling
+   wide character support can be useful when porting to platforms that don't
+   support the C functionality for wide characters. When wide characters are
+   not supported, several parts of the library will be disabled, notably the
+   wide character specializations of std::basic_string." ON)
+option(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS
+  "Whether to turn on vendor availability annotations on declarations that depend
+   on definitions in a shared library. By default, we assume that we're not building
+   libc++ for any specific vendor, and we disable those annotations. Vendors wishing
+   to provide compile-time errors when using features unavailable on some version of
+   the shared library they shipped should turn this on and see `include/__availability`
+   for more details." OFF)
+
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+  set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared-gcc.cfg.in")
+elseif(MINGW)
+  set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-mingw.cfg.in")
+elseif(WIN32) # clang-cl
+  if (LIBCXX_ENABLE_SHARED)
+    set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared-clangcl.cfg.in")
+  else()
+    set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-static-clangcl.cfg.in")
+  endif()
+else()
+  if (LIBCXX_ENABLE_SHARED)
+    set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared.cfg.in")
+  else()
+    set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-static.cfg.in")
+  endif()
+endif()
+set(LIBCXX_TEST_CONFIG "${LIBCXX_DEFAULT_TEST_CONFIG}" CACHE STRING
+    "The path to the Lit testing configuration to use when running the tests.
+     If a relative path is provided, it is assumed to be relative to '<monorepo>/libcxx/test/configs'.")
+if (NOT IS_ABSOLUTE "${LIBCXX_TEST_CONFIG}")
+  set(LIBCXX_TEST_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/test/configs/${LIBCXX_TEST_CONFIG}")
+endif()
+message(STATUS "Using libc++ testing configuration: ${LIBCXX_TEST_CONFIG}")
+set(LIBCXX_TEST_PARAMS "" CACHE STRING
+    "A list of parameters to run the Lit test suite with.")
+
+# Benchmark options -----------------------------------------------------------
+option(LIBCXX_INCLUDE_BENCHMARKS "Build the libc++ benchmarks and their dependencies" ON)
+
+set(LIBCXX_BENCHMARK_TEST_ARGS_DEFAULT --benchmark_min_time=0.01)
+set(LIBCXX_BENCHMARK_TEST_ARGS "${LIBCXX_BENCHMARK_TEST_ARGS_DEFAULT}" CACHE STRING
+    "Arguments to pass when running the benchmarks using check-cxx-benchmarks")
+
+set(LIBCXX_BENCHMARK_NATIVE_STDLIB "" CACHE STRING
+        "Build the benchmarks against the specified native STL.
+         The value must be one of libc++/libstdc++")
+set(LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN "" CACHE STRING
+    "Use alternate GCC toolchain when building the native benchmarks")
+
+if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
+  if (NOT (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libc++"
+        OR LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++"))
+    message(FATAL_ERROR "Invalid value for LIBCXX_BENCHMARK_NATIVE_STDLIB: "
+            "'${LIBCXX_BENCHMARK_NATIVE_STDLIB}'")
+  endif()
+endif()
+
+option(LIBCXX_INCLUDE_DOCS "Build the libc++ documentation." ${LLVM_INCLUDE_DOCS})
+set(LIBCXX_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
+    "Define suffix of library directory name (32/64)")
+option(LIBCXX_INSTALL_HEADERS "Install the libc++ headers." ON)
+option(LIBCXX_INSTALL_LIBRARY "Install the libc++ library." ON)
+cmake_dependent_option(LIBCXX_INSTALL_STATIC_LIBRARY
+  "Install the static libc++ library." ON
+  "LIBCXX_ENABLE_STATIC;LIBCXX_INSTALL_LIBRARY" OFF)
+cmake_dependent_option(LIBCXX_INSTALL_SHARED_LIBRARY
+  "Install the shared libc++ library." ON
+  "LIBCXX_ENABLE_SHARED;LIBCXX_INSTALL_LIBRARY" OFF)
+
+option(LIBCXX_ABI_UNSTABLE "Use the unstable ABI of libc++. This is equivalent to specifying LIBCXX_ABI_VERSION=n, where n is the not-yet-stable version." OFF)
+if (LIBCXX_ABI_UNSTABLE)
+  set(abi_version "2")
+else()
+  set(abi_version "1")
+endif()
+set(LIBCXX_ABI_VERSION "${abi_version}" CACHE STRING
+  "ABI version of libc++. Can be either 1 or 2, where 2 is currently the unstable ABI.
+   Defaults to 1 unless LIBCXX_ABI_UNSTABLE is specified, in which case this is 2.")
+set(LIBCXX_LIBRARY_VERSION "${LIBCXX_ABI_VERSION}.0" CACHE STRING
+  "Version of libc++. This will be reflected in the name of the shared library produced.
+   For example, -DLIBCXX_LIBRARY_VERSION=x.y will result in the library being named
+   libc++.x.y.dylib, along with the usual symlinks pointing to that. On Apple platforms,
+   this also controls the linker's 'current_version' property.")
+set(LIBCXX_ABI_NAMESPACE "__${LIBCXX_ABI_VERSION}" CACHE STRING "The inline ABI namespace used by libc++. It defaults to __n where `n` is the current ABI version.")
+if (NOT LIBCXX_ABI_NAMESPACE MATCHES "__.*")
+  message(FATAL_ERROR "LIBCXX_ABI_NAMESPACE must be a reserved identifier, got '${LIBCXX_ABI_NAMESPACE}'.")
+endif()
+option(LIBCXX_ABI_FORCE_ITANIUM "Ignore auto-detection and force use of the Itanium ABI.")
+option(LIBCXX_ABI_FORCE_MICROSOFT "Ignore auto-detection and force use of the Microsoft ABI.")
+
+set(LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION "default" CACHE STRING
+  "Override the implementation to use for comparing typeinfos. By default, this
+   is detected automatically by the library, but this option allows overriding
+   which implementation is used unconditionally.
+
+   See the documentation in <libcxx/include/typeinfo> for details on what each
+   value means.")
+set(TYPEINFO_COMPARISON_VALUES "default;1;2;3")
+if (NOT ("${LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION}" IN_LIST TYPEINFO_COMPARISON_VALUES))
+  message(FATAL_ERROR "Value '${LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION}' is not a valid value for
+                       LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION")
+endif()
+
+set(LIBCXX_ABI_DEFINES "" CACHE STRING "A semicolon separated list of ABI macros to define in the site config header.")
+option(LIBCXX_EXTRA_SITE_DEFINES "Extra defines to add into __config_site")
+option(LIBCXX_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
+
+option(LIBCXX_ENABLE_BACKWARDS_COMPATIBILITY_DEBUG_MODE_SYMBOLS
+  "Whether to include the old Debug mode symbols in the compiled library. This
+   is provided for backwards compatibility since the compiled library used to
+   always contain those symbols, regardless of whether the library was built
+   with the debug mode enabled. This is OFF by default, please contact the libc++
+   developers if you need to turn this on, as this will be removed in LLVM 16." OFF)
+
+# ABI Library options ---------------------------------------------------------
+if (LIBCXX_TARGETING_MSVC)
+  set(LIBCXX_DEFAULT_ABI_LIBRARY "vcruntime")
+elseif (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+  set(LIBCXX_DEFAULT_ABI_LIBRARY "libcxxrt")
+else()
+  set(LIBCXX_DEFAULT_ABI_LIBRARY "libcxxabi")
+endif()
+
+set(LIBCXX_SUPPORTED_ABI_LIBRARIES none libcxxabi system-libcxxabi libcxxrt libstdc++ libsupc++ vcruntime)
+set(LIBCXX_CXX_ABI "${LIBCXX_DEFAULT_ABI_LIBRARY}" CACHE STRING "Specify C++ ABI library to use. Supported values are ${LIBCXX_SUPPORTED_ABI_LIBRARIES}.")
+if (NOT "${LIBCXX_CXX_ABI}" IN_LIST LIBCXX_SUPPORTED_ABI_LIBRARIES)
+  message(FATAL_ERROR "Unsupported C++ ABI library: '${LIBCXX_CXX_ABI}'. Supported values are ${LIBCXX_SUPPORTED_ABI_LIBRARIES}.")
+endif()
+
+option(LIBCXX_ENABLE_STATIC_ABI_LIBRARY
+  "Use a static copy of the ABI library when linking libc++.
+   This option cannot be used with LIBCXX_ENABLE_ABI_LINKER_SCRIPT." OFF)
+
+cmake_dependent_option(LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY
+  "Statically link the ABI library to static library" ON
+  "LIBCXX_ENABLE_STATIC_ABI_LIBRARY" OFF)
+
+cmake_dependent_option(LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY
+  "Statically link the ABI library to shared library" ON
+  "LIBCXX_ENABLE_STATIC_ABI_LIBRARY" OFF)
+
+# Generate and install a linker script inplace of libc++.so. The linker script
+# will link libc++ to the correct ABI library. This option is on by default
+# on UNIX platforms other than Apple unless 'LIBCXX_ENABLE_STATIC_ABI_LIBRARY'
+# is on. This option is also disabled when the ABI library is not specified
+# or is specified to be "none".
+set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE OFF)
+if (LLVM_HAVE_LINK_VERSION_SCRIPT AND NOT LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY
+      AND NOT LIBCXX_CXX_ABI STREQUAL "none"
+      AND Python3_EXECUTABLE
+      AND LIBCXX_ENABLE_SHARED)
+    set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE ON)
+endif()
+
+option(LIBCXX_ENABLE_ABI_LINKER_SCRIPT
+      "Use and install a linker script for the given ABI library"
+      ${ENABLE_LINKER_SCRIPT_DEFAULT_VALUE})
+
+option(LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS
+  "Build libc++ with definitions for operator new/delete. These are normally
+   defined in libc++abi, but this option can be used to define them in libc++
+   instead. If you define them in libc++, make sure they are NOT defined in
+   libc++abi. Doing otherwise is an ODR violation." OFF)
+# Build libc++abi with libunwind. We need this option to determine whether to
+# link with libunwind or libgcc_s while running the test cases.
+option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
+
+# Target options --------------------------------------------------------------
+option(LIBCXX_BUILD_32_BITS "Build 32 bit multilib libc++. This option is not supported anymore when building the runtimes. Please specify a full triple instead." ${LLVM_BUILD_32_BITS})
+if (LIBCXX_BUILD_32_BITS)
+  message(FATAL_ERROR "LIBCXX_BUILD_32_BITS is not supported anymore when building the runtimes, please specify a full triple instead.")
+endif()
+
+# TODO: Remove this after branching for LLVM 15
+if(LIBCXX_SYSROOT OR LIBCXX_TARGET_TRIPLE OR LIBCXX_GCC_TOOLCHAIN)
+  message(WARNING "LIBCXX_SYSROOT, LIBCXX_TARGET_TRIPLE and LIBCXX_GCC_TOOLCHAIN are not supported anymore, please use the native CMake equivalents instead")
+endif()
+
+# Feature options -------------------------------------------------------------
+option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON)
+option(LIBCXX_ENABLE_RTTI "Use run time type information." ON)
+option(LIBCXX_ENABLE_THREADS "Build libc++ with support for threads." ON)
+option(LIBCXX_ENABLE_MONOTONIC_CLOCK
+  "Build libc++ with support for a monotonic clock.
+   This option may only be set to OFF when LIBCXX_ENABLE_THREADS=OFF." ON)
+option(LIBCXX_HAS_MUSL_LIBC "Build libc++ with support for the Musl C library" OFF)
+option(LIBCXX_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF)
+option(LIBCXX_HAS_WIN32_THREAD_API "Ignore auto-detection and force use of win32 thread API" OFF)
+option(LIBCXX_HAS_EXTERNAL_THREAD_API
+  "Build libc++ with an externalized threading API.
+   This option may only be set to ON when LIBCXX_ENABLE_THREADS=ON." OFF)
+option(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY
+    "Build libc++ with an externalized threading library.
+     This option may only be set to ON when LIBCXX_ENABLE_THREADS=ON" OFF)
+
+# Misc options ----------------------------------------------------------------
+# FIXME: Turn -pedantic back ON. It is currently off because it warns
+# about #include_next which is used everywhere.
+option(LIBCXX_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF)
+option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
+option(LIBCXX_DISABLE_MACRO_CONFLICT_WARNINGS "Disable #warnings about conflicting macros." OFF)
+
+option(LIBCXX_GENERATE_COVERAGE "Enable generating code coverage." OFF)
+set(LIBCXX_COVERAGE_LIBRARY "" CACHE STRING
+    "The Profile-rt library used to build with code coverage")
+
+set(LIBCXX_CONFIGURE_IDE_DEFAULT OFF)
+if (XCODE OR MSVC_IDE)
+  set(LIBCXX_CONFIGURE_IDE_DEFAULT ON)
+endif()
+option(LIBCXX_CONFIGURE_IDE "Configure libcxx for use within an IDE"
+      ${LIBCXX_CONFIGURE_IDE_DEFAULT})
+
+set(LIBCXX_HERMETIC_STATIC_LIBRARY_DEFAULT OFF)
+if (WIN32)
+  set(LIBCXX_HERMETIC_STATIC_LIBRARY_DEFAULT ON)
+endif()
+option(LIBCXX_HERMETIC_STATIC_LIBRARY
+  "Do not export any symbols from the static library." ${LIBCXX_HERMETIC_STATIC_LIBRARY_DEFAULT})
+
+#===============================================================================
+# Check option configurations
+#===============================================================================
+
+# Ensure LIBCXX_ENABLE_MONOTONIC_CLOCK is set to ON only when
+# LIBCXX_ENABLE_THREADS is on.
+if(LIBCXX_ENABLE_THREADS AND NOT LIBCXX_ENABLE_MONOTONIC_CLOCK)
+  message(FATAL_ERROR "LIBCXX_ENABLE_MONOTONIC_CLOCK can only be set to OFF"
+                      " when LIBCXX_ENABLE_THREADS is also set to OFF.")
+endif()
+
+if(NOT LIBCXX_ENABLE_THREADS)
+  if(LIBCXX_HAS_PTHREAD_API)
+    message(FATAL_ERROR "LIBCXX_HAS_PTHREAD_API can only be set to ON"
+                        " when LIBCXX_ENABLE_THREADS is also set to ON.")
+  endif()
+  if(LIBCXX_HAS_EXTERNAL_THREAD_API)
+    message(FATAL_ERROR "LIBCXX_HAS_EXTERNAL_THREAD_API can only be set to ON"
+                        " when LIBCXX_ENABLE_THREADS is also set to ON.")
+  endif()
+  if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
+    message(FATAL_ERROR "LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY can only be set "
+                        "to ON when LIBCXX_ENABLE_THREADS is also set to ON.")
+  endif()
+  if (LIBCXX_HAS_WIN32_THREAD_API)
+    message(FATAL_ERROR "LIBCXX_HAS_WIN32_THREAD_API can only be set to ON"
+                        " when LIBCXX_ENABLE_THREADS is also set to ON.")
+  endif()
+
+endif()
+
+if (LIBCXX_HAS_EXTERNAL_THREAD_API)
+  if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
+    message(FATAL_ERROR "The options LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY and "
+                        "LIBCXX_HAS_EXTERNAL_THREAD_API cannot both be ON at "
+                        "the same time")
+  endif()
+  if (LIBCXX_HAS_PTHREAD_API)
+    message(FATAL_ERROR "The options LIBCXX_HAS_EXTERNAL_THREAD_API"
+                        "and LIBCXX_HAS_PTHREAD_API cannot be both"
+                        "set to ON at the same time.")
+  endif()
+  if (LIBCXX_HAS_WIN32_THREAD_API)
+    message(FATAL_ERROR "The options LIBCXX_HAS_EXTERNAL_THREAD_API"
+                        "and LIBCXX_HAS_WIN32_THREAD_API cannot be both"
+                        "set to ON at the same time.")
+  endif()
+endif()
+
+if (LIBCXX_HAS_PTHREAD_API)
+  if (LIBCXX_HAS_WIN32_THREAD_API)
+    message(FATAL_ERROR "The options LIBCXX_HAS_PTHREAD_API"
+                        "and LIBCXX_HAS_WIN32_THREAD_API cannot be both"
+                        "set to ON at the same time.")
+  endif()
+endif()
+
+# Ensure LLVM_USE_SANITIZER is not specified when LIBCXX_GENERATE_COVERAGE
+# is ON.
+if (LLVM_USE_SANITIZER AND LIBCXX_GENERATE_COVERAGE)
+  message(FATAL_ERROR "LLVM_USE_SANITIZER cannot be used with LIBCXX_GENERATE_COVERAGE")
+endif()
+
+# Warn users that LIBCXX_ENABLE_STATIC_ABI_LIBRARY is an experimental option.
+if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY)
+  message(WARNING "LIBCXX_ENABLE_STATIC_ABI_LIBRARY is an experimental option")
+  if (LIBCXX_ENABLE_STATIC AND NOT Python3_EXECUTABLE)
+    message(FATAL_ERROR "LIBCXX_ENABLE_STATIC_ABI_LIBRARY requires python but it was not found.")
+  endif()
+endif()
+
+if (LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
+    if (APPLE)
+      message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT cannot be used on APPLE targets")
+    endif()
+    if (NOT LIBCXX_ENABLE_SHARED)
+      message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT is only available for shared library builds.")
+    endif()
+endif()
+
+if (LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY AND LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
+    message(FATAL_ERROR "Conflicting options given.
+        LIBCXX_ENABLE_STATIC_ABI_LIBRARY cannot be specified with
+        LIBCXX_ENABLE_ABI_LINKER_SCRIPT")
+endif()
+
+if (LIBCXX_ABI_FORCE_ITANIUM AND LIBCXX_ABI_FORCE_MICROSOFT)
+  message(FATAL_ERROR "Only one of LIBCXX_ABI_FORCE_ITANIUM and LIBCXX_ABI_FORCE_MICROSOFT can be specified.")
+endif ()
+
+#===============================================================================
+# Configure System
+#===============================================================================
+
+# TODO: Projects that depend on libc++ should use LIBCXX_GENERATED_INCLUDE_DIR
+# instead of hard-coding include/c++/v1.
+
+set(LIBCXX_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH
+    "Path where target-agnostic libc++ headers should be installed.")
+set(LIBCXX_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
+    "Path where built libc++ runtime libraries should be installed.")
+
+if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
+  set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
+  set(LIBCXX_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
+  set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LLVM_BINARY_DIR}/include/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1")
+  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
+      "Path where built libc++ libraries should be installed.")
+  set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${CMAKE_INSTALL_INCLUDEDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1" CACHE PATH
+      "Path where target-specific libc++ headers should be installed.")
+  if(LIBCXX_LIBDIR_SUBDIR)
+    string(APPEND LIBCXX_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
+    string(APPEND LIBCXX_INSTALL_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
+  endif()
+else()
+  if(LLVM_LIBRARY_OUTPUT_INTDIR)
+    set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
+    set(LIBCXX_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
+  else()
+    set(LIBCXX_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXX_LIBDIR_SUFFIX})
+    set(LIBCXX_GENERATED_INCLUDE_DIR "${CMAKE_BINARY_DIR}/include/c++/v1")
+  endif()
+  set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LIBCXX_GENERATED_INCLUDE_DIR}")
+  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LIBCXX_LIBDIR_SUFFIX} CACHE PATH
+      "Path where built libc++ libraries should be installed.")
+  set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${LIBCXX_INSTALL_INCLUDE_DIR}" CACHE PATH
+      "Path where target-specific libc++ headers should be installed.")
+endif()
+
+file(MAKE_DIRECTORY "${LIBCXX_BINARY_INCLUDE_DIR}")
+
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
+
+# Declare libc++ configuration variables.
+# They are intended for use as follows:
+# LIBCXX_CXX_FLAGS: General flags for both the compiler and linker.
+# LIBCXX_COMPILE_FLAGS: Compile only flags.
+# LIBCXX_LINK_FLAGS: Linker only flags.
+# LIBCXX_LIBRARIES: libraries libc++ is linked to.
+set(LIBCXX_COMPILE_FLAGS "")
+set(LIBCXX_LINK_FLAGS "")
+set(LIBCXX_LIBRARIES "")
+
+# Include macros for adding and removing libc++ flags.
+include(HandleLibcxxFlags)
+
+# Target flags ================================================================
+# These flags get added to CMAKE_CXX_FLAGS and CMAKE_C_FLAGS so that
+# 'config-ix' use them during feature checks. It also adds them to both
+# 'LIBCXX_COMPILE_FLAGS' and 'LIBCXX_LINK_FLAGS'
+if(ZOS)
+  add_target_flags_if_supported("-fzos-le-char-mode=ebcdic")
+endif()
+
+if (${CMAKE_SYSTEM_NAME} MATCHES "AIX")
+  add_target_flags_if_supported("-mdefault-visibility-export-mapping=explicit")
+  set(CMAKE_AIX_EXPORT_ALL_SYMBOLS OFF)
+endif()
+
+# Configure compiler.
+include(config-ix)
+
+# Configure coverage options.
+if (LIBCXX_GENERATE_COVERAGE)
+  include(CodeCoverage)
+  set(CMAKE_BUILD_TYPE "COVERAGE" CACHE STRING "" FORCE)
+endif()
+
+string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
+if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
+  set(LIBCXX_DEBUG_BUILD ON)
+else()
+  set(LIBCXX_DEBUG_BUILD OFF)
+endif()
+
+#===============================================================================
+# Setup Compiler Flags
+#===============================================================================
+
+include(HandleLibCXXABI) # Setup the ABI library flags
+
+# Remove flags that may have snuck in.
+# TODO: This shouldn't be necessary anymore since we don't support the Project
+#       build anymore, so the rest of LLVM can't pollute our flags.
+remove_flags(-DNDEBUG -UNDEBUG -D_DEBUG -lc++abi)
+remove_flags(--stdlib=libc++ -stdlib=libc++ --stdlib=libstdc++ -stdlib=libstdc++)
+
+# FIXME: Remove all debug flags and flags that change which Windows
+# default libraries are linked. Currently we only support linking the
+# non-debug DLLs
+remove_flags("/D_DEBUG" "/MTd" "/MDd" "/MT" "/Md")
+
+# FIXME(EricWF): See the FIXME on LIBCXX_ENABLE_PEDANTIC.
+# Remove the -pedantic flag and -Wno-pedantic and -pedantic-errors
+# so they don't get transformed into -Wno and -errors respectively.
+remove_flags(-Wno-pedantic -pedantic-errors -pedantic)
+
+# Required flags ==============================================================
+function(cxx_add_basic_build_flags target)
+
+  # Require C++20 for all targets. C++17 is needed to use aligned allocation
+  # in the dylib. C++20 is needed to use char8_t.
+  set_target_properties(${target} PROPERTIES
+    CXX_STANDARD 20
+    CXX_STANDARD_REQUIRED YES
+    CXX_EXTENSIONS NO)
+
+  # When building the dylib, don't warn for unavailable aligned allocation
+  # functions based on the deployment target -- they are always available
+  # because they are provided by the dylib itself with the excepton of z/OS.
+  if (ZOS)
+    target_add_compile_flags_if_supported(${target} PRIVATE -fno-aligned-allocation)
+  else()
+    target_add_compile_flags_if_supported(${target} PRIVATE -faligned-allocation)
+  endif()
+
+  # On all systems the system c++ standard library headers need to be excluded.
+  # MSVC only has -X, which disables all default includes; including the crt.
+  # Thus, we do nothing and hope we don't accidentally include any of the C++
+  # headers
+  target_add_compile_flags_if_supported(${target} PUBLIC -nostdinc++)
+
+  # Hide all inline function definitions which have not explicitly been marked
+  # visible. This prevents new definitions for inline functions from appearing in
+  # the dylib when get ODR used by another function.
+  target_add_compile_flags_if_supported(${target} PRIVATE -fvisibility-inlines-hidden)
+
+  # Our visibility annotations are not quite right for non-Clang compilers,
+  # so we end up not exporting all the symbols we should. In the future, we
+  # can improve the situation by providing an explicit list of exported
+  # symbols on all compilers.
+  if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    target_add_compile_flags_if_supported(${target} PRIVATE -fvisibility=hidden)
+  endif()
+
+  if (LIBCXX_CONFIGURE_IDE)
+    # This simply allows IDE to process <experimental/coroutine>
+    target_add_compile_flags_if_supported(${target} PRIVATE -fcoroutines-ts)
+  endif()
+
+  # Let the library headers know they are currently being used to build the
+  # library.
+  target_compile_definitions(${target} PRIVATE -D_LIBCPP_BUILDING_LIBRARY)
+
+  if (NOT LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS)
+    target_compile_definitions(${target} PRIVATE -D_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS)
+  endif()
+
+  if (C_SUPPORTS_COMMENT_LIB_PRAGMA)
+    if (LIBCXX_HAS_PTHREAD_LIB)
+      target_compile_definitions(${target} PRIVATE -D_LIBCPP_LINK_PTHREAD_LIB)
+    endif()
+    if (LIBCXX_HAS_RT_LIB)
+      target_compile_definitions(${target} PRIVATE -D_LIBCPP_LINK_RT_LIB)
+    endif()
+  endif()
+endfunction()
+
+# Warning flags ===============================================================
+function(cxx_add_warning_flags target)
+  target_compile_definitions(${target} PUBLIC -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+  if (MSVC)
+    # -W4 is the cl.exe/clang-cl equivalent of -Wall. (In cl.exe and clang-cl,
+    # -Wall is equivalent to -Weverything in GCC style compiler drivers.)
+    target_add_compile_flags_if_supported(${target} PRIVATE -W4)
+  else()
+    target_add_compile_flags_if_supported(${target} PRIVATE -Wall)
+  endif()
+  target_add_compile_flags_if_supported(${target} PRIVATE -Wextra -W -Wwrite-strings
+                                                          -Wno-unused-parameter -Wno-long-long
+                                                          -Werror=return-type -Wextra-semi -Wundef
+                                                          -Wformat-nonliteral)
+  if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+    target_add_compile_flags_if_supported(${target} PRIVATE
+      -Wno-user-defined-literals
+      -Wno-covered-switch-default
+      -Wno-suggest-override
+    )
+    if (LIBCXX_TARGETING_CLANG_CL)
+      target_add_compile_flags_if_supported(${target} PRIVATE
+        -Wno-c++98-compat
+        -Wno-c++98-compat-pedantic
+        -Wno-c++11-compat
+        -Wno-undef
+        -Wno-reserved-id-macro
+        -Wno-gnu-include-next
+        -Wno-gcc-compat # For ignoring "'diagnose_if' is a clang extension" warnings
+        -Wno-zero-as-null-pointer-constant # FIXME: Remove this and fix all occurrences.
+        -Wno-deprecated-dynamic-exception-spec # For auto_ptr
+        -Wno-sign-conversion
+        -Wno-old-style-cast
+        -Wno-deprecated # FIXME: Remove this and fix all occurrences.
+        -Wno-shift-sign-overflow # FIXME: Why do we need this with clang-cl but not clang?
+        -Wno-double-promotion # FIXME: remove me
+      )
+    endif()
+  elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+    target_add_compile_flags_if_supported(${target} PRIVATE
+      -Wno-attributes
+      -Wno-literal-suffix
+      -Wno-c++14-compat
+      -Wno-noexcept-type
+      -Wno-suggest-override)
+  endif()
+  if (LIBCXX_ENABLE_WERROR)
+    target_add_compile_flags_if_supported(${target} PRIVATE -Werror)
+    target_add_compile_flags_if_supported(${target} PRIVATE -WX)
+  else()
+    # TODO(EricWF) Remove this. We shouldn't be suppressing errors when -Werror is
+    # added elsewhere.
+    target_add_compile_flags_if_supported(${target} PRIVATE -Wno-error)
+  endif()
+  if (LIBCXX_ENABLE_PEDANTIC)
+    target_add_compile_flags_if_supported(${target} PRIVATE -pedantic)
+  endif()
+endfunction()
+
+# Exception flags =============================================================
+function(cxx_add_exception_flags target)
+  if (LIBCXX_ENABLE_EXCEPTIONS)
+    # Catches C++ exceptions only and tells the compiler to assume that extern C
+    # functions never throw a C++ exception.
+    target_add_compile_flags_if_supported(${target} PUBLIC -EHsc)
+  else()
+    target_add_compile_flags_if_supported(${target} PUBLIC -EHs- -EHa-)
+    target_add_compile_flags_if_supported(${target} PUBLIC -fno-exceptions)
+  endif()
+endfunction()
+
+# RTTI flags ==================================================================
+function(cxx_add_rtti_flags target)
+  if (NOT LIBCXX_ENABLE_RTTI)
+    target_add_compile_flags_if_supported(${target} PUBLIC -GR-)
+    target_add_compile_flags_if_supported(${target} PUBLIC -fno-rtti)
+  endif()
+endfunction()
+
+# Threading flags =============================================================
+if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXX_ENABLE_SHARED)
+  # Need to allow unresolved symbols if this is to work with shared library builds
+  if (APPLE)
+    add_link_flags("-undefined dynamic_lookup")
+  else()
+    # Relax this restriction from HandleLLVMOptions
+    string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
+  endif()
+endif()
+
+# Assertion flags =============================================================
+define_if(LIBCXX_DEBUG_BUILD -D_DEBUG)
+if (LIBCXX_ENABLE_ASSERTIONS AND NOT LIBCXX_DEBUG_BUILD)
+  # MSVC doesn't like _DEBUG on release builds. See PR 4379.
+  define_if_not(LIBCXX_TARGETING_MSVC -D_DEBUG)
+endif()
+
+# Modules flags ===============================================================
+# FIXME The libc++ sources are fundamentally non-modular. They need special
+# versions of the headers in order to provide C++03 and legacy ABI definitions.
+# NOTE: The public headers can be used with modules in all other contexts.
+function(cxx_add_module_flags target)
+  if (LLVM_ENABLE_MODULES)
+    # Ignore that the rest of the modules flags are now unused.
+    target_add_compile_flags_if_supported(${target} PUBLIC -Wno-unused-command-line-argument)
+    target_compile_options(${target} PUBLIC -fno-modules)
+  endif()
+endfunction()
+
+# Sanitizer flags =============================================================
+
+function(get_sanitizer_flags OUT_VAR  USE_SANITIZER)
+  set(SANITIZER_FLAGS)
+  set(USE_SANITIZER "${USE_SANITIZER}")
+  # NOTE: LLVM_USE_SANITIZER checks for a UNIX like system instead of MSVC.
+  # But we don't have LLVM_ON_UNIX so checking for MSVC is the best we can do.
+  if (USE_SANITIZER AND NOT MSVC)
+    append_flags_if_supported(SANITIZER_FLAGS "-fno-omit-frame-pointer")
+    append_flags_if_supported(SANITIZER_FLAGS "-gline-tables-only")
+
+    if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND
+            NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")
+      append_flags_if_supported(SANITIZER_FLAGS "-gline-tables-only")
+    endif()
+    if (USE_SANITIZER STREQUAL "Address")
+      append_flags(SANITIZER_FLAGS "-fsanitize=address")
+    elseif (USE_SANITIZER MATCHES "Memory(WithOrigins)?")
+      append_flags(SANITIZER_FLAGS -fsanitize=memory)
+      if (USE_SANITIZER STREQUAL "MemoryWithOrigins")
+        append_flags(SANITIZER_FLAGS "-fsanitize-memory-track-origins")
+      endif()
+    elseif (USE_SANITIZER STREQUAL "Undefined")
+      append_flags(SANITIZER_FLAGS "-fsanitize=undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all")
+    elseif (USE_SANITIZER STREQUAL "Address;Undefined" OR
+            USE_SANITIZER STREQUAL "Undefined;Address")
+      append_flags(SANITIZER_FLAGS "-fsanitize=address,undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all")
+    elseif (USE_SANITIZER STREQUAL "Thread")
+      append_flags(SANITIZER_FLAGS -fsanitize=thread)
+    elseif (USE_SANITIZER STREQUAL "DataFlow")
+      append_flags(SANITIZER_FLAGS -fsanitize=dataflow)
+    else()
+      message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${USE_SANITIZER}")
+    endif()
+  elseif(USE_SANITIZER AND MSVC)
+    message(WARNING "LLVM_USE_SANITIZER is not supported on this platform.")
+  endif()
+  set(${OUT_VAR} "${SANITIZER_FLAGS}" PARENT_SCOPE)
+endfunction()
+
+get_sanitizer_flags(SANITIZER_FLAGS "${LLVM_USE_SANITIZER}")
+
+# Link system libraries =======================================================
+function(cxx_link_system_libraries target)
+
+# In order to remove just libc++ from the link step
+# we need to use -nostdlib++ whenever it is supported.
+# Unfortunately this cannot be used universally because for example g++ supports
+# only -nodefaultlibs in which case all libraries will be removed and
+# all libraries but c++ have to be added in manually.
+  if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
+    target_add_link_flags_if_supported(${target} PRIVATE "-nostdlib++")
+  else()
+    target_add_link_flags_if_supported(${target} PRIVATE "-nodefaultlibs")
+    target_add_compile_flags_if_supported(${target} PRIVATE "/Zl")
+    target_add_link_flags_if_supported(${target} PRIVATE "/nodefaultlib")
+  endif()
+
+  if (CXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG AND LIBCXXABI_USE_LLVM_UNWINDER)
+    # If we're linking directly against the libunwind that we're building
+    # in the same invocation, don't try to link in the toolchain's
+    # default libunwind (which may be missing still).
+    target_add_link_flags_if_supported(${target} PRIVATE "--unwindlib=none")
+  endif()
+
+  if (LIBCXX_HAS_SYSTEM_LIB)
+    target_link_libraries(${target} PRIVATE System)
+  endif()
+
+  if (LIBCXX_HAS_PTHREAD_LIB)
+    target_link_libraries(${target} PRIVATE pthread)
+  endif()
+
+  if (LIBCXX_HAS_C_LIB)
+    target_link_libraries(${target} PRIVATE c)
+  endif()
+
+  if (LIBCXX_HAS_M_LIB)
+    target_link_libraries(${target} PRIVATE m)
+  endif()
+
+  if (LIBCXX_HAS_RT_LIB)
+    target_link_libraries(${target} PRIVATE rt)
+  endif()
+
+  if (LIBCXX_USE_COMPILER_RT)
+    find_compiler_rt_library(builtins LIBCXX_BUILTINS_LIBRARY)
+    if (LIBCXX_BUILTINS_LIBRARY)
+      target_link_libraries(${target} PRIVATE "${LIBCXX_BUILTINS_LIBRARY}")
+    endif()
+  elseif (LIBCXX_HAS_GCC_LIB)
+    target_link_libraries(${target} PRIVATE gcc)
+  elseif (LIBCXX_HAS_GCC_S_LIB)
+    target_link_libraries(${target} PRIVATE gcc_s)
+  endif()
+
+  if (LIBCXX_HAS_ATOMIC_LIB)
+    target_link_libraries(${target} PRIVATE atomic)
+  endif()
+
+  if (MINGW)
+    target_link_libraries(${target} PRIVATE "${MINGW_LIBRARIES}")
+  endif()
+
+  if (LIBCXX_TARGETING_MSVC)
+    if (LIBCXX_DEBUG_BUILD)
+      set(LIB_SUFFIX "d")
+    else()
+      set(LIB_SUFFIX "")
+    endif()
+
+    target_link_libraries(${target} PRIVATE ucrt${LIB_SUFFIX}) # Universal C runtime
+    target_link_libraries(${target} PRIVATE vcruntime${LIB_SUFFIX}) # C++ runtime
+    target_link_libraries(${target} PRIVATE msvcrt${LIB_SUFFIX}) # C runtime startup files
+    target_link_libraries(${target} PRIVATE msvcprt${LIB_SUFFIX}) # C++ standard library. Required for exception_ptr internals.
+    # Required for standards-complaint wide character formatting functions
+    # (e.g. `printfw`/`scanfw`)
+    target_link_libraries(${target} PRIVATE iso_stdio_wide_specifiers)
+  endif()
+
+  if (ANDROID AND ANDROID_PLATFORM_LEVEL LESS 21)
+    target_link_libraries(${target} PUBLIC android_support)
+  endif()
+endfunction()
+
+# Windows-related flags =======================================================
+function(cxx_add_windows_flags target)
+  if(WIN32 AND NOT MINGW)
+    target_compile_definitions(${target} PRIVATE
+                                 # Ignore the -MSC_VER mismatch, as we may build
+                                 # with a different compatibility version.
+                                 _ALLOW_MSC_VER_MISMATCH
+                                 # Don't check the msvcprt iterator debug levels
+                                 # as we will define the iterator types; libc++
+                                 # uses a different macro to identify the debug
+                                 # level.
+                                 _ALLOW_ITERATOR_DEBUG_LEVEL_MISMATCH
+                                 # We are building the c++ runtime, don't pull in
+                                 # msvcprt.
+                                 _CRTBLD
+                                 # Don't warn on the use of "deprecated"
+                                 # "insecure" functions which are standards
+                                 # specified.
+                                 _CRT_SECURE_NO_WARNINGS
+                                 # Use the ISO conforming behaviour for conversion
+                                 # in printf, scanf.
+                                 _CRT_STDIO_ISO_WIDE_SPECIFIERS)
+  endif()
+endfunction()
+
+# Configuration file flags =====================================================
+config_define(${LIBCXX_ABI_VERSION} _LIBCPP_ABI_VERSION)
+config_define(${LIBCXX_ABI_NAMESPACE} _LIBCPP_ABI_NAMESPACE)
+config_define_if(LIBCXX_ABI_FORCE_ITANIUM _LIBCPP_ABI_FORCE_ITANIUM)
+config_define_if(LIBCXX_ABI_FORCE_MICROSOFT _LIBCPP_ABI_FORCE_MICROSOFT)
+config_define_if_not(LIBCXX_ENABLE_THREADS _LIBCPP_HAS_NO_THREADS)
+config_define_if_not(LIBCXX_ENABLE_MONOTONIC_CLOCK _LIBCPP_HAS_NO_MONOTONIC_CLOCK)
+if (NOT LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION STREQUAL "default")
+  config_define("${LIBCXX_TYPEINFO_COMPARISON_IMPLEMENTATION}" _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION)
+endif()
+config_define_if(LIBCXX_HAS_PTHREAD_API _LIBCPP_HAS_THREAD_API_PTHREAD)
+config_define_if(LIBCXX_HAS_EXTERNAL_THREAD_API _LIBCPP_HAS_THREAD_API_EXTERNAL)
+config_define_if(LIBCXX_HAS_WIN32_THREAD_API _LIBCPP_HAS_THREAD_API_WIN32)
+config_define_if(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY _LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
+config_define_if(LIBCXX_HAS_MUSL_LIBC _LIBCPP_HAS_MUSL_LIBC)
+config_define_if(LIBCXX_NO_VCRUNTIME _LIBCPP_NO_VCRUNTIME)
+config_define_if(LIBCXX_ENABLE_PARALLEL_ALGORITHMS _LIBCPP_HAS_PARALLEL_ALGORITHMS)
+config_define_if_not(LIBCXX_ENABLE_FILESYSTEM _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+config_define_if_not(LIBCXX_ENABLE_RANDOM_DEVICE _LIBCPP_HAS_NO_RANDOM_DEVICE)
+config_define_if_not(LIBCXX_ENABLE_LOCALIZATION _LIBCPP_HAS_NO_LOCALIZATION)
+config_define_if_not(LIBCXX_ENABLE_UNICODE _LIBCPP_HAS_NO_UNICODE)
+config_define_if_not(LIBCXX_ENABLE_WIDE_CHARACTERS _LIBCPP_HAS_NO_WIDE_CHARACTERS)
+config_define_if_not(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS)
+config_define_if(LIBCXX_ENABLE_DEBUG_MODE _LIBCPP_ENABLE_DEBUG_MODE)
+if (LIBCXX_ENABLE_ASSERTIONS)
+  config_define(1 _LIBCPP_ENABLE_ASSERTIONS_DEFAULT)
+else()
+  config_define(0 _LIBCPP_ENABLE_ASSERTIONS_DEFAULT)
+endif()
+
+if (LIBCXX_ABI_DEFINES)
+  set(abi_defines)
+  foreach (abi_define ${LIBCXX_ABI_DEFINES})
+    if (NOT abi_define MATCHES "^_LIBCPP_ABI_")
+      message(SEND_ERROR "Invalid ABI macro ${abi_define} in LIBCXX_ABI_DEFINES")
+    endif()
+    list(APPEND abi_defines "#define ${abi_define}")
+  endforeach()
+  string(REPLACE ";" "\n" abi_defines "${abi_defines}")
+  config_define(${abi_defines} _LIBCPP_ABI_DEFINES)
+endif()
+
+if (LIBCXX_EXTRA_SITE_DEFINES)
+  set(extra_site_defines)
+  foreach (extra_site_define ${LIBCXX_EXTRA_SITE_DEFINES})
+    # Allow defines such as DEFINE=VAL, transformed into "#define DEFINE VAL".
+    string(REPLACE "=" " " extra_site_define "${extra_site_define}")
+    list(APPEND extra_site_defines "#define ${extra_site_define}")
+  endforeach()
+  string(REPLACE ";" "\n" extra_site_defines "${extra_site_defines}")
+  config_define(${extra_site_defines} _LIBCPP_EXTRA_SITE_DEFINES)
+endif()
+
+# By default libc++ on Windows expects to use a shared library, which requires
+# the headers to use DLL import/export semantics. However when building a
+# static library only we modify the headers to disable DLL import/export.
+if (DEFINED WIN32 AND LIBCXX_ENABLE_STATIC AND NOT LIBCXX_ENABLE_SHARED)
+  message(STATUS "Generating custom __config for non-DLL Windows build")
+  config_define(ON _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
+endif()
+
+if (WIN32 AND LIBCXX_ENABLE_STATIC_ABI_LIBRARY)
+  # If linking libcxxabi statically into libcxx, skip the dllimport attributes
+  # on symbols we refer to from libcxxabi.
+  add_definitions(-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS)
+endif()
+
+# Setup all common build flags =================================================
+function(cxx_add_common_build_flags target)
+  cxx_add_basic_build_flags(${target})
+  cxx_add_warning_flags(${target})
+  cxx_add_windows_flags(${target})
+  cxx_add_exception_flags(${target})
+  cxx_add_rtti_flags(${target})
+  cxx_add_module_flags(${target})
+  cxx_link_system_libraries(${target})
+endfunction()
+
+#===============================================================================
+# Setup Source Code And Tests
+#===============================================================================
+add_subdirectory(include)
+add_subdirectory(src)
+add_subdirectory(utils)
+
+set(LIBCXX_TEST_DEPS "cxx_experimental")
+
+if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
+  list(APPEND LIBCXX_TEST_DEPS cxx_external_threads)
+endif()
+
+if (LIBCXX_INCLUDE_BENCHMARKS)
+  add_subdirectory(benchmarks)
+endif()
+
+if (LIBCXX_INCLUDE_TESTS)
+  add_subdirectory(test)
+  add_subdirectory(lib/abi)
+endif()
+
+if (LIBCXX_INCLUDE_DOCS)
+  add_subdirectory(docs)
+endif()
diff --git a/app/src/main/cpp/libcxx/CREDITS.TXT b/app/src/main/cpp/libcxx/CREDITS.TXT
new file mode 100644
index 0000000..cd5bc08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/CREDITS.TXT
@@ -0,0 +1,186 @@
+This file is a partial list of people who have contributed to the LLVM/libc++
+project.  If you have contributed a patch or made some other contribution to
+LLVM/libc++, please submit a patch to this file to add yourself, and it will be
+done!
+
+The list is sorted by surname and formatted to allow easy grepping and
+beautification by scripts.  The fields are: name (N), email (E), web-address
+(W), PGP key ID and fingerprint (P), description (D), and snail-mail address
+(S).
+
+N: Saleem Abdulrasool
+E: compnerd@compnerd.org
+D: Minor patches and Linux fixes.
+
+N: Ulf Adams
+D: Invented the Ryu and Ryu Printf algorithms used in floating-point to_chars, and wrote the initial code.
+
+N: Muiez Ahmed
+E: muiez@ibm.com
+D: z/OS port.
+
+N: Dan Albert
+E: danalbert@google.com
+D: Android support and test runner improvements.
+
+N: Dimitry Andric
+E: dimitry@andric.com
+D: Visibility fixes, minor FreeBSD portability patches.
+
+N: Holger Arnold
+E: holgerar@gmail.com
+D: Minor fix.
+
+N: Jorg Brown
+D: Ported floating-point to_chars from MSVC to libc++.
+
+N: David Chisnall
+E: theraven at theravensnest dot org
+D: FreeBSD and Solaris ports, libcxxrt support, some atomics work.
+
+N: Marshall Clow
+E: mclow.lists@gmail.com
+E: marshall@idio.com
+D: C++14 support, patches and bug fixes.
+
+N: Jonathan B Coe
+E: jbcoe@me.com
+D: Implementation of propagate_const.
+
+N: Matthew Dempsky
+E: matthew@dempsky.org
+D: Minor patches and bug fixes.
+
+N: Christopher Di Bella
+E: cjdb@google.com
+E: cjdb.ns@gmail.com
+D: Library concepts.
+
+N: Glen Joseph Fernandes
+E: glenjofe@gmail.com
+D: Implementation of to_address.
+
+N: Eric Fiselier
+E: eric@efcs.ca
+D: LFTS support, patches and bug fixes.
+
+N: Bill Fisher
+E: william.w.fisher@gmail.com
+D: Regex bug fixes.
+
+N: Google Inc.
+D: Copyright owner and contributor of the CityHash algorithm
+
+N: Howard Hinnant
+E: hhinnant@apple.com
+D: Architect and primary author of libc++
+
+N: Sergej Jaskiewicz
+E: jaskiewiczs@icloud.com
+D: Minor improvements in the testing infrastructure
+
+N: Hyeon-bin Jeong
+E: tuhertz@gmail.com
+D: Minor patches and bug fixes.
+
+N: Argyrios Kyrtzidis
+E: kyrtzidis@apple.com
+D: Bug fixes.
+
+N: Stephan T. Lavavej
+E: stl@microsoft.com
+E: stl@nuwen.net
+D: Implemented floating-point to_chars.
+
+N: Microsoft Corporation
+D: Contributed floating-point to_chars.
+
+N: Bruce Mitchener, Jr.
+E: bruce.mitchener@gmail.com
+D: Emscripten-related changes.
+
+N: Michel Morin
+E: mimomorin@gmail.com
+D: Minor patches to is_convertible.
+
+N: Andrew Morrow
+E: andrew.c.morrow@gmail.com
+D: Minor patches and Linux fixes.
+
+N: Michael Park
+E: mcypark@gmail.com
+D: Implementation of <variant>.
+
+N: Arvid Picciani
+E: aep at exys dot org
+D: Minor patches and musl port.
+
+N: Bjorn Reese
+E: breese@users.sourceforge.net
+D: Initial regex prototype
+
+N: Nico Rieck
+E: nico.rieck@gmail.com
+D: Windows fixes
+
+N: Jon Roelofs
+E: jroelofS@jroelofs.com
+D: Remote testing, Newlib port, baremetal/single-threaded support.
+
+N: Kent Ross
+E: k@mad.cash
+D: Patches for operator<=> support
+
+N: Jonathan Sauer
+D: Minor patches, mostly related to constexpr
+
+N: Craig Silverstein
+E: csilvers@google.com
+D: Implemented Cityhash as the string hash function on 64-bit machines
+
+N: Richard Smith
+D: Minor patches.
+
+N: Joerg Sonnenberger
+E: joerg@NetBSD.org
+D: NetBSD port.
+
+N: Stephan Tolksdorf
+E: st@quanttec.com
+D: Minor <atomic> fix
+
+N: Ruben Van Boxem
+E: vanboxem dot ruben at gmail dot com
+D: Initial Windows patches.
+
+N: Michael van der Westhuizen
+E: r1mikey at gmail dot com
+
+N: Larisse Voufo
+D: Minor patches.
+
+N: Klaas de Vries
+E: klaas at klaasgaaf dot nl
+D: Minor bug fix.
+
+N: Mark de Wever
+E: koraq at xs4all dot nl
+D: Format library support.
+D: Finalized the porting of MSVC's to_chars to libc++.
+
+N: Zhang Xiongpang
+E: zhangxiongpang@gmail.com
+D: Minor patches and bug fixes.
+
+N: Xing Xue
+E: xingxue@ca.ibm.com
+D: AIX port
+
+N: Jeffrey Yasskin
+E: jyasskin@gmail.com
+E: jyasskin@google.com
+D: Linux fixes.
+
+N: Zhihao Yuan
+E: lichray@gmail.com
+D: Standard compatibility fixes.
diff --git a/app/src/main/cpp/libcxx/LICENSE.TXT b/app/src/main/cpp/libcxx/LICENSE.TXT
new file mode 100644
index 0000000..e159d28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/LICENSE.TXT
@@ -0,0 +1,311 @@
+==============================================================================
+The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
+==============================================================================
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
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+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
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+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
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+    Copyright [yyyy] [name of copyright owner]
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+
+---- LLVM Exceptions to the Apache 2.0 License ----
+
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into an Object form of such source code, you
+may redistribute such embedded portions in such Object form without complying
+with the conditions of Sections 4(a), 4(b) and 4(d) of the License.
+
+In addition, if you combine or link compiled forms of this Software with
+software that is licensed under the GPLv2 ("Combined Software") and if a
+court of competent jurisdiction determines that the patent provision (Section
+3), the indemnity provision (Section 9) or other Section of the License
+conflicts with the conditions of the GPLv2, you may retroactively and
+prospectively choose to deem waived or otherwise exclude such Section(s) of
+the License, but only in their entirety and only with respect to the Combined
+Software.
+
+==============================================================================
+Software from third parties included in the LLVM Project:
+==============================================================================
+The LLVM Project contains third party software which is under different license
+terms. All such code will be identified clearly using at least one of two
+mechanisms:
+1) It will be in a separate directory tree with its own `LICENSE.txt` or
+   `LICENSE` file at the top containing the specific license and restrictions
+   which apply to that software, or
+2) It will contain specific license and restriction terms at the top of every
+   file.
+
+==============================================================================
+Legacy LLVM License (https://llvm.org/docs/DeveloperPolicy.html#legacy):
+==============================================================================
+
+The libc++ library is dual licensed under both the University of Illinois
+"BSD-Like" license and the MIT license.  As a user of this code you may choose
+to use it under either license.  As a contributor, you agree to allow your code
+to be used under both.
+
+Full text of the relevant licenses is included below.
+
+==============================================================================
+
+University of Illinois/NCSA
+Open Source License
+
+Copyright (c) 2009-2019 by the contributors listed in CREDITS.TXT
+
+All rights reserved.
+
+Developed by:
+
+    LLVM Team
+
+    University of Illinois at Urbana-Champaign
+
+    http://llvm.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal with
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimers.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimers in the
+      documentation and/or other materials provided with the distribution.
+
+    * Neither the names of the LLVM Team, University of Illinois at
+      Urbana-Champaign, nor the names of its contributors may be used to
+      endorse or promote products derived from this Software without specific
+      prior written permission.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
+SOFTWARE.
+
+==============================================================================
+
+Copyright (c) 2009-2014 by the contributors listed in CREDITS.TXT
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/app/src/main/cpp/libcxx/README.md b/app/src/main/cpp/libcxx/README.md
new file mode 100644
index 0000000..2eb34c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/README.md
@@ -0,0 +1,5 @@
+## libc++
+
+LLVM libc++, specifically for Android, removing exception and RTTI support.
+
+Source code is extracted from both the upstrean and AOSP `llvm-project` repository.
diff --git a/app/src/main/cpp/libcxx/TODO.TXT b/app/src/main/cpp/libcxx/TODO.TXT
new file mode 100644
index 0000000..bc78554
--- /dev/null
+++ b/app/src/main/cpp/libcxx/TODO.TXT
@@ -0,0 +1,23 @@
+This is meant to be a general place to list things that should be done "someday"
+
+CXX Runtime Library Tasks
+=========================
+* Look into mirroring libsupc++'s typeinfo vtable layout when libsupc++/libstdc++
+  is used as the runtime library.
+* Investigate and document interoperability between libc++ and libstdc++ on
+  linux. Do this for every supported c++ runtime library.
+
+Atomic Related Tasks
+====================
+* future should use <atomic> for synchronization.
+
+Test Suite Tasks
+================
+* Improve the quality and portability of the locale test data.
+* Convert failure tests to use Clang Verify.
+
+Misc Tasks
+==========
+* Find all sequences of >2 underscores and eradicate them.
+* run clang-tidy on libc++
+* Document the "conditionally-supported" bits of libc++
diff --git a/app/src/main/cpp/libcxx/appveyor-reqs-install.cmd b/app/src/main/cpp/libcxx/appveyor-reqs-install.cmd
new file mode 100644
index 0000000..e3bd018
--- /dev/null
+++ b/app/src/main/cpp/libcxx/appveyor-reqs-install.cmd
@@ -0,0 +1,53 @@
+@echo on
+
+if NOT EXIST C:\projects\deps (
+  mkdir C:\projects\deps
+)
+cd C:\projects\deps
+
+::###########################################################################
+:: Setup Compiler
+::###########################################################################
+if NOT EXIST llvm-installer.exe (
+  appveyor DownloadFile https://prereleases.llvm.org/win-snapshots/LLVM-9.0.0-r357435-win32.exe -FileName llvm-installer.exe
+)
+if "%CLANG_VERSION%"=="ToT" (
+    START /WAIT llvm-installer.exe /S /D=C:\"Program Files\LLVM"
+)
+if DEFINED CLANG_VERSION  @set PATH="C:\Program Files\LLVM\bin";%PATH%
+if DEFINED CLANG_VERSION  clang-cl -v
+
+if DEFINED MINGW_PATH rename "C:\Program Files\Git\usr\bin\sh.exe" "sh-ignored.exe"
+if DEFINED MINGW_PATH @set "PATH=%PATH:C:\Program Files (x86)\Git\bin=%"
+if DEFINED MINGW_PATH @set "PATH=%PATH%;%MINGW_PATH%"
+if DEFINED MINGW_PATH g++ -v
+
+::###########################################################################
+:: Install a recent CMake
+::###########################################################################
+if NOT EXIST cmake (
+  appveyor DownloadFile https://cmake.org/files/v3.7/cmake-3.7.2-win64-x64.zip -FileName cmake.zip
+  7z x cmake.zip -oC:\projects\deps > nul
+  move C:\projects\deps\cmake-* C:\projects\deps\cmake
+  rm cmake.zip
+)
+@set PATH=C:\projects\deps\cmake\bin;%PATH%
+cmake --version
+
+::###########################################################################
+:: Install Ninja
+::###########################################################################
+if NOT EXIST ninja (
+  appveyor DownloadFile https://github.com/ninja-build/ninja/releases/download/v1.6.0/ninja-win.zip -FileName ninja.zip
+  7z x ninja.zip -oC:\projects\deps\ninja > nul
+  rm ninja.zip
+)
+@set PATH=C:\projects\deps\ninja;%PATH%
+ninja --version
+
+::###########################################################################
+:: Setup the cached copy of LLVM
+::###########################################################################
+git clone --depth=1 http://llvm.org/git/llvm.git
+
+@echo off
diff --git a/app/src/main/cpp/libcxx/appveyor.yml b/app/src/main/cpp/libcxx/appveyor.yml
new file mode 100644
index 0000000..ea2c88e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/appveyor.yml
@@ -0,0 +1,71 @@
+version: '{build}'
+
+shallow_clone: true
+
+build:
+  verbosity: detailed
+
+configuration:
+  - Debug
+
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+      CMAKE_OPTIONS: -DCMAKE_C_COMPILER=clang-cl.exe -DCMAKE_CXX_COMPILER=clang-cl.exe
+      CLANG_VERSION: ToT
+      MSVC_SETUP_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvarsall.bat
+      MSVC_SETUP_ARG: x86
+      GENERATOR: Ninja
+      MAKE_PROGRAM: ninja
+      APPVEYOR_SAVE_CACHE_ON_ERROR: true
+# TODO: Maybe re-enable this configuration? Do we want to support MSVC 2015's runtime?
+#    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+#      MINGW_PATH: C:\mingw-w64\i686-6.3.0-posix-dwarf-rt_v5-rev1\mingw32\bin
+#      GENERATOR: MinGW Makefiles
+#      MAKE_PROGRAM: mingw32-make
+#      APPVEYOR_SAVE_CACHE_ON_ERROR: true
+
+install:
+  ############################################################################
+  # All external dependencies are installed in C:\projects\deps
+  ############################################################################
+  - call "%APPVEYOR_BUILD_FOLDER%\\appveyor-reqs-install.cmd"
+
+before_build:
+  - if DEFINED MSVC_SETUP_PATH call "%MSVC_SETUP_PATH%" %MSVC_SETUP_ARG%
+  - cd %APPVEYOR_BUILD_FOLDER%
+
+build_script:
+  - md C:\projects\build-libcxx
+  - cd C:\projects\build-libcxx
+  - echo %configuration%
+
+  #############################################################################
+  # Configuration Step
+  #############################################################################
+  - cmake -G "%GENERATOR%" %CMAKE_OPTIONS%
+    "-DCMAKE_BUILD_TYPE=%configuration%"
+    "-DLLVM_PATH=C:\projects\deps\llvm"
+    -DLLVM_LIT_ARGS="-sv --show-xfail --show-unsupported"
+    %APPVEYOR_BUILD_FOLDER%
+
+  #############################################################################
+  # Build Step
+  #############################################################################
+  - "%MAKE_PROGRAM%"
+
+test_script:
+  - "%MAKE_PROGRAM% check-cxx"
+
+on_failure:
+  - appveyor PushArtifact CMakeFiles/CMakeOutput.log
+  - appveyor PushArtifact CMakeFiles/CMakeError.log
+
+artifacts:
+  - path: '_build/CMakeFiles/*.log'
+    name: logs
+
+cache:
+ - C:\projects\deps\ninja
+ - C:\projects\deps\cmake
+ - C:\projects\deps\llvm-installer.exe
diff --git a/app/src/main/cpp/libcxx/arm64-v8a/libcxx.a b/app/src/main/cpp/libcxx/arm64-v8a/libcxx.a
deleted file mode 100644
index a923662c227ebb9e090076751908592660bb35ce..0000000000000000000000000000000000000000
GIT binary patch
literal 0
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diff --git a/app/src/main/cpp/libcxx/armeabi-v7a/libcxx.a b/app/src/main/cpp/libcxx/armeabi-v7a/libcxx.a
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diff --git a/app/src/main/cpp/libcxx/benchmarks/CMakeLists.txt b/app/src/main/cpp/libcxx/benchmarks/CMakeLists.txt
new file mode 100644
index 0000000..7eb76ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/CMakeLists.txt
@@ -0,0 +1,233 @@
+if (CMAKE_VERSION VERSION_LESS 3.17)
+  message(WARNING "The libc++ benchmarks won't be available because the version of CMake is too old to support them.")
+  return()
+endif()
+
+include(ExternalProject)
+include(CheckCXXCompilerFlag)
+
+#==============================================================================
+# Build Google Benchmark for libc++
+#==============================================================================
+
+set(CMAKE_FOLDER "${CMAKE_FOLDER}/Benchmarks")
+
+set(BENCHMARK_LIBCXX_COMPILE_FLAGS
+    -Wno-unused-command-line-argument
+    -nostdinc++
+    -isystem "${LIBCXX_GENERATED_INCLUDE_DIR}"
+    -L${LIBCXX_LIBRARY_DIR}
+    -Wl,-rpath,${LIBCXX_LIBRARY_DIR}
+    ${SANITIZER_FLAGS}
+    )
+if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
+  list(APPEND BENCHMARK_LIBCXX_COMPILE_FLAGS
+    -isystem "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}")
+endif()
+if (DEFINED LIBCXX_CXX_ABI_LIBRARY_PATH)
+  list(APPEND BENCHMARK_LIBCXX_COMPILE_FLAGS
+          -L${LIBCXX_CXX_ABI_LIBRARY_PATH}
+          -Wl,-rpath,${LIBCXX_CXX_ABI_LIBRARY_PATH})
+endif()
+split_list(BENCHMARK_LIBCXX_COMPILE_FLAGS)
+
+ExternalProject_Add(google-benchmark-libcxx
+        EXCLUDE_FROM_ALL ON
+        DEPENDS cxx cxx-headers
+        PREFIX benchmark-libcxx
+        SOURCE_DIR ${LLVM_THIRD_PARTY_DIR}/benchmark
+        INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx
+        CMAKE_CACHE_ARGS
+          -DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
+          -DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
+          -DCMAKE_BUILD_TYPE:STRING=RELEASE
+          -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
+          -DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_LIBCXX_COMPILE_FLAGS}
+          -DBENCHMARK_USE_LIBCXX:BOOL=ON
+          -DBENCHMARK_ENABLE_TESTING:BOOL=OFF)
+
+#==============================================================================
+# Build Google Benchmark for the native stdlib
+#==============================================================================
+set(BENCHMARK_NATIVE_TARGET_FLAGS)
+if (LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN)
+  set(BENCHMARK_NATIVE_TARGET_FLAGS
+      --gcc-toolchain=${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN})
+endif()
+split_list(BENCHMARK_NATIVE_TARGET_FLAGS)
+
+if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
+  ExternalProject_Add(google-benchmark-native
+        EXCLUDE_FROM_ALL ON
+        PREFIX benchmark-native
+        SOURCE_DIR ${LLVM_THIRD_PARTY_DIR}/benchmark
+        INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native
+        CMAKE_CACHE_ARGS
+          -DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
+          -DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
+          -DCMAKE_CXX_FLAGS:STRING=${BENCHMARK_NATIVE_TARGET_FLAGS}
+          -DCMAKE_BUILD_TYPE:STRING=RELEASE
+          -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
+          -DBENCHMARK_ENABLE_TESTING:BOOL=OFF)
+endif()
+
+
+#==============================================================================
+# Benchmark tests configuration
+#==============================================================================
+add_custom_target(cxx-benchmarks)
+set(BENCHMARK_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR})
+set(BENCHMARK_LIBCXX_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx)
+set(BENCHMARK_NATIVE_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native)
+
+add_library(               cxx-benchmarks-flags INTERFACE)
+target_compile_features(   cxx-benchmarks-flags INTERFACE cxx_std_20)
+target_compile_options(    cxx-benchmarks-flags INTERFACE -fsized-deallocation -nostdinc++)
+target_include_directories(cxx-benchmarks-flags INTERFACE "${LIBCXX_GENERATED_INCLUDE_DIR}"
+                                                INTERFACE "${BENCHMARK_LIBCXX_INSTALL}/include"
+                                                INTERFACE "${LIBCXX_SOURCE_DIR}/test/support")
+
+add_library(           cxx-benchmarks-flags-native INTERFACE)
+target_link_libraries( cxx-benchmarks-flags-native INTERFACE cxx-benchmarks-flags)
+target_compile_options(cxx-benchmarks-flags-native INTERFACE ${BENCHMARK_NATIVE_TARGET_FLAGS})
+target_link_options(   cxx-benchmarks-flags-native INTERFACE ${BENCHMARK_NATIVE_TARGET_FLAGS} "-L${BENCHMARK_NATIVE_INSTALL}/lib")
+if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
+  find_library(LIBSTDCXX_FILESYSTEM_TEST stdc++fs
+        PATHS ${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN}
+        PATH_SUFFIXES lib lib64
+        DOC "The libstdc++ filesystem library used by the benchmarks"
+    )
+  if (LIBSTDCXX_FILESYSTEM_TEST)
+    target_link_libraries(cxx-benchmarks-flags-native INTERFACE -lstdc++fs)
+  endif()
+else()
+  target_link_libraries(cxx-benchmarks-flags-native INTERFACE -lc++fs -lc++experimental)
+endif()
+
+add_library(           cxx-benchmarks-flags-libcxx INTERFACE)
+target_link_libraries( cxx-benchmarks-flags-libcxx INTERFACE cxx-benchmarks-flags)
+target_compile_options(cxx-benchmarks-flags-libcxx INTERFACE ${SANITIZER_FLAGS} -Wno-user-defined-literals -Wno-suggest-override)
+target_link_options(   cxx-benchmarks-flags-libcxx INTERFACE -nodefaultlibs "-L${BENCHMARK_LIBCXX_INSTALL}/lib" ${SANITIZER_FLAGS})
+
+set(libcxx_benchmark_targets)
+
+function(add_benchmark_test name source_file)
+  set(libcxx_target ${name}_libcxx)
+  list(APPEND libcxx_benchmark_targets ${libcxx_target})
+  add_executable(${libcxx_target} EXCLUDE_FROM_ALL ${source_file})
+  target_link_libraries(${libcxx_target} PRIVATE cxx-benchmarks-flags-libcxx)
+  add_dependencies(${libcxx_target} cxx google-benchmark-libcxx)
+  add_dependencies(cxx-benchmarks ${libcxx_target})
+  if (LIBCXX_ENABLE_SHARED)
+    target_link_libraries(${libcxx_target} PRIVATE cxx_shared)
+  else()
+    target_link_libraries(${libcxx_target} PRIVATE cxx_static)
+  endif()
+  target_link_libraries(${libcxx_target} PRIVATE cxx_experimental benchmark)
+  if (LLVM_USE_SANITIZER)
+    target_link_libraries(${libcxx_target} PRIVATE -ldl)
+  endif()
+  set_target_properties(${libcxx_target}
+    PROPERTIES
+          OUTPUT_NAME "${name}.libcxx.out"
+          RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
+          CXX_EXTENSIONS NO)
+  cxx_link_system_libraries(${libcxx_target})
+  if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
+    set(native_target ${name}_native)
+    add_executable(${native_target} EXCLUDE_FROM_ALL ${source_file})
+    target_link_libraries(${native_target} PRIVATE cxx-benchmarks-flags-native)
+    add_dependencies(${native_target} google-benchmark-native
+                                      google-benchmark-libcxx)
+    target_link_libraries(${native_target} PRIVATE -lbenchmark)
+    if (LIBCXX_HAS_PTHREAD_LIB)
+      target_link_libraries(${native_target} PRIVATE -pthread)
+    endif()
+    add_dependencies(cxx-benchmarks ${native_target})
+    set_target_properties(${native_target}
+      PROPERTIES
+          OUTPUT_NAME "${name}.native.out"
+          RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
+          CXX_EXTENSIONS NO)
+  endif()
+endfunction()
+
+
+#==============================================================================
+# Register Benchmark tests
+#==============================================================================
+set(BENCHMARK_TESTS
+    algorithms.partition_point.bench.cpp
+    algorithms/lower_bound.bench.cpp
+    algorithms/make_heap.bench.cpp
+    algorithms/make_heap_then_sort_heap.bench.cpp
+    algorithms/min_max_element.bench.cpp
+    algorithms/pop_heap.bench.cpp
+    algorithms/push_heap.bench.cpp
+    algorithms/ranges_make_heap.bench.cpp
+    algorithms/ranges_make_heap_then_sort_heap.bench.cpp
+    algorithms/ranges_pop_heap.bench.cpp
+    algorithms/ranges_push_heap.bench.cpp
+    algorithms/ranges_sort.bench.cpp
+    algorithms/ranges_sort_heap.bench.cpp
+    algorithms/ranges_stable_sort.bench.cpp
+    algorithms/sort.bench.cpp
+    algorithms/sort_heap.bench.cpp
+    algorithms/stable_sort.bench.cpp
+    allocation.bench.cpp
+    deque.bench.cpp
+    deque_iterator.bench.cpp
+    filesystem.bench.cpp
+    format_to_n.bench.cpp
+    format_to.bench.cpp
+    format.bench.cpp
+    formatted_size.bench.cpp
+    formatter_float.bench.cpp
+    formatter_int.bench.cpp
+    function.bench.cpp
+    join_view.bench.cpp
+    map.bench.cpp
+    monotonic_buffer.bench.cpp
+    ordered_set.bench.cpp
+    std_format_spec_string_unicode.bench.cpp
+    string.bench.cpp
+    stringstream.bench.cpp
+    to_chars.bench.cpp
+    unordered_set_operations.bench.cpp
+    util_smartptr.bench.cpp
+    variant_visit_1.bench.cpp
+    variant_visit_2.bench.cpp
+    variant_visit_3.bench.cpp
+    vector_operations.bench.cpp
+    )
+
+foreach(test_path ${BENCHMARK_TESTS})
+  get_filename_component(test_file "${test_path}" NAME)
+  string(REPLACE ".bench.cpp" "" test_name "${test_file}")
+  if (NOT DEFINED ${test_name}_REPORTED)
+    message(STATUS "Adding Benchmark: ${test_file}")
+    # Only report the adding of the benchmark once.
+    set(${test_name}_REPORTED ON CACHE INTERNAL "")
+  endif()
+  add_benchmark_test(${test_name} ${test_path})
+endforeach()
+
+if (LIBCXX_INCLUDE_TESTS)
+  include(AddLLVM)
+
+  if (NOT DEFINED LIBCXX_TEST_DEPS)
+    message(FATAL_ERROR "Expected LIBCXX_TEST_DEPS to be defined")
+  endif()
+
+  configure_lit_site_cfg(
+          ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.py.in
+          ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg.py)
+
+  set(BENCHMARK_LIT_ARGS "--show-all --show-xfail --show-unsupported ${LIT_ARGS_DEFAULT}")
+
+  add_lit_target(check-cxx-benchmarks
+          "Running libcxx benchmarks tests"
+          ${CMAKE_CURRENT_BINARY_DIR}
+          DEPENDS cxx-benchmarks ${LIBCXX_TEST_DEPS}
+          ARGS ${BENCHMARK_LIT_ARGS})
+endif()
diff --git a/app/src/main/cpp/libcxx/benchmarks/CartesianBenchmarks.h b/app/src/main/cpp/libcxx/benchmarks/CartesianBenchmarks.h
new file mode 100644
index 0000000..2eea156
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/CartesianBenchmarks.h
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+#include <string>
+#include <tuple>
+#include <type_traits>
+#include <vector>
+
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+namespace internal {
+
+template <class D, class E, size_t I>
+struct EnumValue : std::integral_constant<E, static_cast<E>(I)> {
+  static std::string name() { return std::string("_") + D::Names[I]; }
+};
+
+template <class D, class E, size_t ...Idxs>
+constexpr auto makeEnumValueTuple(std::index_sequence<Idxs...>) {
+  return std::make_tuple(EnumValue<D, E, Idxs>{}...);
+}
+
+template <class B>
+static auto skip(const B& Bench, int) -> decltype(Bench.skip()) {
+  return Bench.skip();
+}
+template <class B>
+static auto skip(const B& Bench, char) {
+  return false;
+}
+
+template <class B, class Args, size_t... Is>
+void makeBenchmarkFromValuesImpl(const Args& A, std::index_sequence<Is...>) {
+  for (auto& V : A) {
+    B Bench{std::get<Is>(V)...};
+    if (!internal::skip(Bench, 0)) {
+      benchmark::RegisterBenchmark(Bench.name().c_str(),
+                                   [=](benchmark::State& S) { Bench.run(S); });
+    }
+  }
+}
+
+template <class B, class... Args>
+void makeBenchmarkFromValues(const std::vector<std::tuple<Args...> >& A) {
+  makeBenchmarkFromValuesImpl<B>(A, std::index_sequence_for<Args...>());
+}
+
+template <template <class...> class B, class Args, class... U>
+void makeBenchmarkImpl(const Args& A, std::tuple<U...> t) {
+  makeBenchmarkFromValues<B<U...> >(A);
+}
+
+template <template <class...> class B, class Args, class... U,
+          class... T, class... Tuples>
+void makeBenchmarkImpl(const Args& A, std::tuple<U...>, std::tuple<T...>,
+                       Tuples... rest) {
+  (internal::makeBenchmarkImpl<B>(A, std::tuple<U..., T>(), rest...), ...);
+}
+
+template <class R, class T>
+void allValueCombinations(R& Result, const T& Final) {
+  return Result.push_back(Final);
+}
+
+template <class R, class T, class V, class... Vs>
+void allValueCombinations(R& Result, const T& Prev, const V& Value,
+                          const Vs&... Values) {
+  for (const auto& E : Value) {
+    allValueCombinations(Result, std::tuple_cat(Prev, std::make_tuple(E)),
+                         Values...);
+  }
+}
+
+}  // namespace internal
+
+// CRTP class that enables using enum types as a dimension for
+// makeCartesianProductBenchmark below.
+// The type passed to `B` will be a std::integral_constant<E, e>, with the
+// additional static function `name()` that returns the stringified name of the
+// label.
+//
+// Eg:
+// enum class MyEnum { A, B };
+// struct AllMyEnum : EnumValuesAsTuple<AllMyEnum, MyEnum, 2> {
+//   static constexpr absl::string_view Names[] = {"A", "B"};
+// };
+template <class Derived, class EnumType, size_t NumLabels>
+using EnumValuesAsTuple =
+    decltype(internal::makeEnumValueTuple<Derived, EnumType>(
+        std::make_index_sequence<NumLabels>{}));
+
+// Instantiates B<T0, T1, ..., TN> where <Ti...> are the combinations in the
+// cartesian product of `Tuples...`, and pass (arg0, ..., argN) as constructor
+// arguments where `(argi...)` are the combination in the cartesian product of
+// the runtime values of `A...`.
+// B<T...> requires:
+//  - std::string name(args...): The name of the benchmark.
+//  - void run(benchmark::State&, args...): The body of the benchmark.
+// It can also optionally provide:
+//  - bool skip(args...): When `true`, skips the combination. Default is false.
+//
+// Returns int to facilitate registration. The return value is unspecified.
+template <template <class...> class B, class... Tuples, class... Args>
+int makeCartesianProductBenchmark(const Args&... A) {
+  std::vector<std::tuple<typename Args::value_type...> > V;
+  internal::allValueCombinations(V, std::tuple<>(), A...);
+  internal::makeBenchmarkImpl<B>(V, std::tuple<>(), Tuples()...);
+  return 0;
+}
+
+template <class B, class... Args>
+int makeCartesianProductBenchmark(const Args&... A) {
+  std::vector<std::tuple<typename Args::value_type...> > V;
+  internal::allValueCombinations(V, std::tuple<>(), A...);
+  internal::makeBenchmarkFromValues<B>(V);
+  return 0;
+}
+
+// When `opaque` is true, this function hides the runtime state of `value` from
+// the optimizer.
+// It returns `value`.
+template <class T>
+TEST_ALWAYS_INLINE inline T maybeOpaque(T value, bool opaque) {
+  if (opaque) benchmark::DoNotOptimize(value);
+  return value;
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/ContainerBenchmarks.h b/app/src/main/cpp/libcxx/benchmarks/ContainerBenchmarks.h
new file mode 100644
index 0000000..f64869a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/ContainerBenchmarks.h
@@ -0,0 +1,154 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef BENCHMARK_CONTAINER_BENCHMARKS_H
+#define BENCHMARK_CONTAINER_BENCHMARKS_H
+
+#include <cassert>
+
+#include "Utilities.h"
+#include "benchmark/benchmark.h"
+
+namespace ContainerBenchmarks {
+
+template <class Container>
+void BM_ConstructSize(benchmark::State& st, Container) {
+  auto size = st.range(0);
+  for (auto _ : st) {
+    Container c(size);
+    DoNotOptimizeData(c);
+  }
+}
+
+template <class Container>
+void BM_ConstructSizeValue(benchmark::State& st, Container, typename Container::value_type const& val) {
+  const auto size = st.range(0);
+  for (auto _ : st) {
+    Container c(size, val);
+    DoNotOptimizeData(c);
+  }
+}
+
+template <class Container, class GenInputs>
+void BM_ConstructIterIter(benchmark::State& st, Container, GenInputs gen) {
+    auto in = gen(st.range(0));
+    const auto begin = in.begin();
+    const auto end = in.end();
+    benchmark::DoNotOptimize(&in);
+    while (st.KeepRunning()) {
+        Container c(begin, end);
+        DoNotOptimizeData(c);
+    }
+}
+
+template <class Container, class GenInputs>
+void BM_InsertValue(benchmark::State& st, Container c, GenInputs gen) {
+    auto in = gen(st.range(0));
+    const auto end = in.end();
+    while (st.KeepRunning()) {
+        c.clear();
+        for (auto it = in.begin(); it != end; ++it) {
+            benchmark::DoNotOptimize(&(*c.insert(*it).first));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+template <class Container, class GenInputs>
+void BM_InsertValueRehash(benchmark::State& st, Container c, GenInputs gen) {
+    auto in = gen(st.range(0));
+    const auto end = in.end();
+    while (st.KeepRunning()) {
+        c.clear();
+        c.rehash(16);
+        for (auto it = in.begin(); it != end; ++it) {
+            benchmark::DoNotOptimize(&(*c.insert(*it).first));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+
+template <class Container, class GenInputs>
+void BM_InsertDuplicate(benchmark::State& st, Container c, GenInputs gen) {
+    auto in = gen(st.range(0));
+    const auto end = in.end();
+    c.insert(in.begin(), in.end());
+    benchmark::DoNotOptimize(&c);
+    benchmark::DoNotOptimize(&in);
+    while (st.KeepRunning()) {
+        for (auto it = in.begin(); it != end; ++it) {
+            benchmark::DoNotOptimize(&(*c.insert(*it).first));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+
+template <class Container, class GenInputs>
+void BM_EmplaceDuplicate(benchmark::State& st, Container c, GenInputs gen) {
+    auto in = gen(st.range(0));
+    const auto end = in.end();
+    c.insert(in.begin(), in.end());
+    benchmark::DoNotOptimize(&c);
+    benchmark::DoNotOptimize(&in);
+    while (st.KeepRunning()) {
+        for (auto it = in.begin(); it != end; ++it) {
+            benchmark::DoNotOptimize(&(*c.emplace(*it).first));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+template <class Container, class GenInputs>
+static void BM_Find(benchmark::State& st, Container c, GenInputs gen) {
+    auto in = gen(st.range(0));
+    c.insert(in.begin(), in.end());
+    benchmark::DoNotOptimize(&(*c.begin()));
+    const auto end = in.data() + in.size();
+    while (st.KeepRunning()) {
+        for (auto it = in.data(); it != end; ++it) {
+            benchmark::DoNotOptimize(&(*c.find(*it)));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+template <class Container, class GenInputs>
+static void BM_FindRehash(benchmark::State& st, Container c, GenInputs gen) {
+    c.rehash(8);
+    auto in = gen(st.range(0));
+    c.insert(in.begin(), in.end());
+    benchmark::DoNotOptimize(&(*c.begin()));
+    const auto end = in.data() + in.size();
+    while (st.KeepRunning()) {
+        for (auto it = in.data(); it != end; ++it) {
+            benchmark::DoNotOptimize(&(*c.find(*it)));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+template <class Container, class GenInputs>
+static void BM_Rehash(benchmark::State& st, Container c, GenInputs gen) {
+    auto in = gen(st.range(0));
+    c.max_load_factor(3.0);
+    c.insert(in.begin(), in.end());
+    benchmark::DoNotOptimize(c);
+    const auto bucket_count = c.bucket_count();
+    while (st.KeepRunning()) {
+        c.rehash(bucket_count + 1);
+        c.rehash(bucket_count);
+        benchmark::ClobberMemory();
+    }
+}
+
+} // end namespace ContainerBenchmarks
+
+#endif // BENCHMARK_CONTAINER_BENCHMARKS_H
diff --git a/app/src/main/cpp/libcxx/benchmarks/GenerateInput.h b/app/src/main/cpp/libcxx/benchmarks/GenerateInput.h
new file mode 100644
index 0000000..3e63f84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/GenerateInput.h
@@ -0,0 +1,143 @@
+#ifndef BENCHMARK_GENERATE_INPUT_H
+#define BENCHMARK_GENERATE_INPUT_H
+
+#include <algorithm>
+#include <random>
+#include <vector>
+#include <string>
+#include <climits>
+#include <cstddef>
+
+static const char Letters[] = {
+    '0','1','2','3','4',
+    '5','6','7','8','9',
+    'A','B','C','D','E','F',
+    'G','H','I','J','K',
+    'L','M','N','O','P',
+    'Q','R','S','T','U',
+    'V','W','X','Y','Z',
+    'a','b','c','d','e','f',
+    'g','h','i','j','k',
+    'l','m','n','o','p',
+    'q','r','s','t','u',
+    'v','w','x','y','z'
+};
+static const std::size_t LettersSize = sizeof(Letters);
+
+inline std::default_random_engine& getRandomEngine() {
+    static std::default_random_engine RandEngine(std::random_device{}());
+    return RandEngine;
+}
+
+
+inline char getRandomChar() {
+    std::uniform_int_distribution<> LettersDist(0, LettersSize-1);
+    return Letters[LettersDist(getRandomEngine())];
+}
+
+template <class IntT>
+inline IntT getRandomInteger(IntT Min, IntT Max) {
+    std::uniform_int_distribution<unsigned long long> dist(Min, Max);
+    return static_cast<IntT>(dist(getRandomEngine()));
+}
+
+inline std::string getRandomString(std::size_t Len) {
+    std::string str(Len, 0);
+    std::generate_n(str.begin(), Len, &getRandomChar);
+    return str;
+}
+
+template <class IntT>
+inline std::vector<IntT> getDuplicateIntegerInputs(size_t N) {
+    std::vector<IntT> inputs(N, static_cast<IntT>(-1));
+    return inputs;
+}
+
+template <class IntT>
+inline std::vector<IntT> getSortedIntegerInputs(size_t N) {
+    std::vector<IntT> inputs;
+    for (size_t i=0; i < N; i += 1)
+        inputs.push_back(i);
+    return inputs;
+}
+
+template <class IntT>
+std::vector<IntT> getSortedLargeIntegerInputs(size_t N) {
+    std::vector<IntT> inputs;
+    for (size_t i=0; i < N; ++i) {
+        inputs.push_back(i + N);
+    }
+    return inputs;
+}
+
+template <class IntT>
+std::vector<IntT> getSortedTopBitsIntegerInputs(size_t N) {
+    std::vector<IntT> inputs = getSortedIntegerInputs<IntT>(N);
+    for (auto& E : inputs) E <<= ((sizeof(IntT) / 2) * CHAR_BIT);
+    return inputs;
+}
+
+template <class IntT>
+inline std::vector<IntT> getReverseSortedIntegerInputs(size_t N) {
+    std::vector<IntT> inputs;
+    std::size_t i = N;
+    while (i > 0) {
+        --i;
+        inputs.push_back(i);
+    }
+    return inputs;
+}
+
+template <class IntT>
+std::vector<IntT> getPipeOrganIntegerInputs(size_t N) {
+    std::vector<IntT> v; v.reserve(N);
+    for (size_t i = 0; i < N/2; ++i) v.push_back(i);
+    for (size_t i = N/2; i < N; ++i) v.push_back(N - i);
+    return v;
+}
+
+
+template <class IntT>
+std::vector<IntT> getRandomIntegerInputs(size_t N) {
+    std::vector<IntT> inputs;
+    for (size_t i=0; i < N; ++i) {
+        inputs.push_back(getRandomInteger<IntT>(0, std::numeric_limits<IntT>::max()));
+    }
+    return inputs;
+}
+
+inline std::vector<std::string> getDuplicateStringInputs(size_t N) {
+    std::vector<std::string> inputs(N, getRandomString(1024));
+    return inputs;
+}
+
+inline std::vector<std::string> getRandomStringInputs(size_t N) {
+    std::vector<std::string> inputs;
+    for (size_t i=0; i < N; ++i) {
+        inputs.push_back(getRandomString(1024));
+    }
+    return inputs;
+}
+
+inline std::vector<std::string> getSortedStringInputs(size_t N) {
+    std::vector<std::string> inputs = getRandomStringInputs(N);
+    std::sort(inputs.begin(), inputs.end());
+    return inputs;
+}
+
+inline std::vector<std::string> getReverseSortedStringInputs(size_t N) {
+    std::vector<std::string> inputs = getSortedStringInputs(N);
+    std::reverse(inputs.begin(), inputs.end());
+    return inputs;
+}
+
+inline std::vector<const char*> getRandomCStringInputs(size_t N) {
+    static std::vector<std::string> inputs = getRandomStringInputs(N);
+    std::vector<const char*> cinputs;
+    for (auto const& str : inputs)
+        cinputs.push_back(str.c_str());
+    return cinputs;
+}
+
+
+#endif // BENCHMARK_GENERATE_INPUT_H
diff --git a/app/src/main/cpp/libcxx/benchmarks/Utilities.h b/app/src/main/cpp/libcxx/benchmarks/Utilities.h
new file mode 100644
index 0000000..9ad2a58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/Utilities.h
@@ -0,0 +1,33 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef BENCHMARK_UTILITIES_H
+#define BENCHMARK_UTILITIES_H
+
+#include <cassert>
+#include <type_traits>
+
+#include "benchmark/benchmark.h"
+
+namespace UtilitiesInternal {
+  template <class Container>
+  auto HaveDataImpl(int) -> decltype((std::declval<Container&>().data(), std::true_type{}));
+  template <class Container>
+  auto HaveDataImpl(long) -> std::false_type;
+  template <class T>
+  using HasData = decltype(HaveDataImpl<T>(0));
+} // namespace UtilitiesInternal
+
+template <class Container, std::enable_if_t<UtilitiesInternal::HasData<Container>::value>* = nullptr>
+void DoNotOptimizeData(Container &c) { benchmark::DoNotOptimize(c.data()); }
+template <class Container, std::enable_if_t<!UtilitiesInternal::HasData<Container>::value>* = nullptr>
+void DoNotOptimizeData(Container &c) { benchmark::DoNotOptimize(&c); }
+
+
+#endif // BENCHMARK_UTILITIES_H
diff --git a/app/src/main/cpp/libcxx/benchmarks/VariantBenchmarks.h b/app/src/main/cpp/libcxx/benchmarks/VariantBenchmarks.h
new file mode 100644
index 0000000..2feaeab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/VariantBenchmarks.h
@@ -0,0 +1,58 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef BENCHMARK_VARIANT_BENCHMARKS_H
+#define BENCHMARK_VARIANT_BENCHMARKS_H
+
+#include <array>
+#include <cstddef>
+#include <tuple>
+#include <type_traits>
+#include <variant>
+
+#include "benchmark/benchmark.h"
+
+#include "GenerateInput.h"
+
+namespace VariantBenchmarks {
+
+template <std::size_t I>
+struct S {
+  static constexpr size_t v = I;
+};
+
+template <std::size_t N, std::size_t... Is>
+static auto genVariants(std::index_sequence<Is...>) {
+  using V = std::variant<S<Is>...>;
+  using F = V (*)();
+  static constexpr F fs[] = {[] { return V(std::in_place_index<Is>); }...};
+
+  std::array<V, N> result = {};
+  for (auto& v : result) {
+    v = fs[getRandomInteger(0ul, sizeof...(Is) - 1)]();
+  }
+
+  return result;
+}
+
+template <std::size_t N, std::size_t Alts>
+static void BM_Visit(benchmark::State& state) {
+  auto args = genVariants<N>(std::make_index_sequence<Alts>{});
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(std::apply(
+        [](auto... vs) {
+          return std::visit([](auto... is) { return (is.v + ... + 0); }, vs...);
+        },
+        args));
+  }
+}
+
+} // end namespace VariantBenchmarks
+
+#endif // BENCHMARK_VARIANT_BENCHMARKS_H
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms.partition_point.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms.partition_point.bench.cpp
new file mode 100644
index 0000000..8192f97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms.partition_point.bench.cpp
@@ -0,0 +1,124 @@
+#include <array>
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <tuple>
+#include <vector>
+
+#include "benchmark/benchmark.h"
+
+#include "CartesianBenchmarks.h"
+#include "GenerateInput.h"
+
+namespace {
+
+template <typename I, typename N>
+std::array<I, 10> every_10th_percentile_N(I first, N n) {
+  N step = n / 10;
+  std::array<I, 10> res;
+
+  for (size_t i = 0; i < 10; ++i) {
+    res[i] = first;
+    std::advance(first, step);
+  }
+
+  return res;
+}
+
+template <class IntT>
+struct TestIntBase {
+  static std::vector<IntT> generateInput(size_t size) {
+    std::vector<IntT> Res(size);
+    std::generate(Res.begin(), Res.end(),
+                  [] { return getRandomInteger<IntT>(0, std::numeric_limits<IntT>::max()); });
+    return Res;
+  }
+};
+
+struct TestInt32 : TestIntBase<std::int32_t> {
+  static constexpr const char* Name = "TestInt32";
+};
+
+struct TestInt64 : TestIntBase<std::int64_t> {
+  static constexpr const char* Name = "TestInt64";
+};
+
+struct TestUint32 : TestIntBase<std::uint32_t> {
+  static constexpr const char* Name = "TestUint32";
+};
+
+struct TestMediumString {
+  static constexpr const char* Name = "TestMediumString";
+  static constexpr size_t StringSize = 32;
+
+  static std::vector<std::string> generateInput(size_t size) {
+    std::vector<std::string> Res(size);
+    std::generate(Res.begin(), Res.end(), [] { return getRandomString(StringSize); });
+    return Res;
+  }
+};
+
+using AllTestTypes = std::tuple<TestInt32, TestInt64, TestUint32, TestMediumString>;
+
+struct LowerBoundAlg {
+  template <class I, class V>
+  I operator()(I first, I last, const V& value) const {
+    return std::lower_bound(first, last, value);
+  }
+
+  static constexpr const char* Name = "LowerBoundAlg";
+};
+
+struct UpperBoundAlg {
+  template <class I, class V>
+  I operator()(I first, I last, const V& value) const {
+    return std::upper_bound(first, last, value);
+  }
+
+  static constexpr const char* Name = "UpperBoundAlg";
+};
+
+struct EqualRangeAlg {
+  template <class I, class V>
+  std::pair<I, I> operator()(I first, I last, const V& value) const {
+    return std::equal_range(first, last, value);
+  }
+
+  static constexpr const char* Name = "EqualRangeAlg";
+};
+
+using AllAlgs = std::tuple<LowerBoundAlg, UpperBoundAlg, EqualRangeAlg>;
+
+template <class Alg, class TestType>
+struct PartitionPointBench {
+  size_t Quantity;
+
+  std::string name() const {
+    return std::string("PartitionPointBench_") + Alg::Name + "_" +
+           TestType::Name + '/' + std::to_string(Quantity);
+  }
+
+  void run(benchmark::State& state) const {
+    auto Data = TestType::generateInput(Quantity);
+    std::sort(Data.begin(), Data.end());
+    auto Every10Percentile = every_10th_percentile_N(Data.begin(), Data.size());
+
+    for (auto _ : state) {
+      for (auto Test : Every10Percentile)
+        benchmark::DoNotOptimize(Alg{}(Data.begin(), Data.end(), *Test));
+    }
+  }
+};
+
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  const std::vector<size_t> Quantities = {1 << 8, 1 << 10, 1 << 20};
+  makeCartesianProductBenchmark<PartitionPointBench, AllAlgs, AllTestTypes>(
+      Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/common.h b/app/src/main/cpp/libcxx/benchmarks/algorithms/common.h
new file mode 100644
index 0000000..ffa39e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/common.h
@@ -0,0 +1,244 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_ALGORITHMS_COMMON_H
+#define LIBCXX_ALGORITHMS_COMMON_H
+
+#include <algorithm>
+#include <numeric>
+#include <tuple>
+#include <vector>
+
+#include "../CartesianBenchmarks.h"
+#include "../GenerateInput.h"
+
+enum class ValueType { Uint32, Uint64, Pair, Tuple, String, Float };
+struct AllValueTypes : EnumValuesAsTuple<AllValueTypes, ValueType, 6> {
+  static constexpr const char* Names[] = {"uint32", "uint64", "pair<uint32, uint32>", "tuple<uint32, uint64, uint32>",
+                                          "string", "float"};
+};
+
+using Types = std::tuple< uint32_t, uint64_t, std::pair<uint32_t, uint32_t>, std::tuple<uint32_t, uint64_t, uint32_t>,
+                          std::string, float >;
+
+template <class V>
+using Value = std::tuple_element_t<(int)V::value, Types>;
+
+enum class Order {
+  Random,
+  Ascending,
+  Descending,
+  SingleElement,
+  PipeOrgan,
+  Heap,
+  QuickSortAdversary,
+};
+struct AllOrders : EnumValuesAsTuple<AllOrders, Order, 7> {
+  static constexpr const char* Names[] = {"Random",     "Ascending",
+                                          "Descending", "SingleElement",
+                                          "PipeOrgan",  "Heap",
+                                          "QuickSortAdversary"};
+};
+
+// fillAdversarialQuickSortInput fills the input vector with N int-like values.
+// These values are arranged in such a way that they would invoke O(N^2)
+// behavior on any quick sort implementation that satisifies certain conditions.
+// Details are available in the following paper:
+// "A Killer Adversary for Quicksort", M. D. McIlroy, Software-Practice &
+// Experience Volume 29 Issue 4 April 10, 1999 pp 341-344.
+// https://dl.acm.org/doi/10.5555/311868.311871.
+template <class T>
+void fillAdversarialQuickSortInput(T& V, size_t N) {
+  assert(N > 0);
+  // If an element is equal to gas, it indicates that the value of the element
+  // is still to be decided and may change over the course of time.
+  const unsigned int gas = N - 1;
+  V.resize(N);
+  for (unsigned int i = 0; i < N; ++i) {
+    V[i] = gas;
+  }
+  // Candidate for the pivot position.
+  int candidate = 0;
+  int nsolid = 0;
+  // Populate all positions in the generated input to gas.
+  std::vector<int> ascVals(V.size());
+  // Fill up with ascending values from 0 to V.size()-1.  These will act as
+  // indices into V.
+  std::iota(ascVals.begin(), ascVals.end(), 0);
+  std::sort(ascVals.begin(), ascVals.end(), [&](int x, int y) {
+    if (V[x] == gas && V[y] == gas) {
+      // We are comparing two inputs whose value is still to be decided.
+      if (x == candidate) {
+        V[x] = nsolid++;
+      } else {
+        V[y] = nsolid++;
+      }
+    }
+    if (V[x] == gas) {
+      candidate = x;
+    } else if (V[y] == gas) {
+      candidate = y;
+    }
+    return V[x] < V[y];
+  });
+}
+
+template <typename T>
+void fillValues(std::vector<T>& V, size_t N, Order O) {
+  if (O == Order::SingleElement) {
+    V.resize(N, 0);
+  } else if (O == Order::QuickSortAdversary) {
+    fillAdversarialQuickSortInput(V, N);
+  } else {
+    while (V.size() < N)
+      V.push_back(V.size());
+  }
+}
+
+template <typename T>
+void fillValues(std::vector<std::pair<T, T> >& V, size_t N, Order O) {
+  if (O == Order::SingleElement) {
+    V.resize(N, std::make_pair(0, 0));
+  } else {
+    while (V.size() < N)
+      // Half of array will have the same first element.
+      if (V.size() % 2) {
+        V.push_back(std::make_pair(V.size(), V.size()));
+      } else {
+        V.push_back(std::make_pair(0, V.size()));
+      }
+  }
+}
+
+template <typename T1, typename T2, typename T3>
+void fillValues(std::vector<std::tuple<T1, T2, T3> >& V, size_t N, Order O) {
+  if (O == Order::SingleElement) {
+    V.resize(N, std::make_tuple(0, 0, 0));
+  } else {
+    while (V.size() < N)
+      // One third of array will have the same first element.
+      // One third of array will have the same first element and the same second element.
+      switch (V.size() % 3) {
+      case 0:
+        V.push_back(std::make_tuple(V.size(), V.size(), V.size()));
+        break;
+      case 1:
+        V.push_back(std::make_tuple(0, V.size(), V.size()));
+        break;
+      case 2:
+        V.push_back(std::make_tuple(0, 0, V.size()));
+        break;
+      }
+  }
+}
+
+inline void fillValues(std::vector<std::string>& V, size_t N, Order O) {
+  if (O == Order::SingleElement) {
+    V.resize(N, getRandomString(64));
+  } else {
+    while (V.size() < N)
+      V.push_back(getRandomString(64));
+  }
+}
+
+template <class T>
+void sortValues(T& V, Order O) {
+  switch (O) {
+  case Order::Random: {
+    std::random_device R;
+    std::mt19937 M(R());
+    std::shuffle(V.begin(), V.end(), M);
+    break;
+  }
+  case Order::Ascending:
+    std::sort(V.begin(), V.end());
+    break;
+  case Order::Descending:
+    std::sort(V.begin(), V.end(), std::greater<>());
+    break;
+  case Order::SingleElement:
+    // Nothing to do
+    break;
+  case Order::PipeOrgan:
+    std::sort(V.begin(), V.end());
+    std::reverse(V.begin() + V.size() / 2, V.end());
+    break;
+  case Order::Heap:
+    std::make_heap(V.begin(), V.end());
+    break;
+  case Order::QuickSortAdversary:
+    // Nothing to do
+    break;
+  }
+}
+
+constexpr size_t TestSetElements =
+#if !TEST_HAS_FEATURE(memory_sanitizer)
+    1 << 18;
+#else
+    1 << 14;
+#endif
+
+template <class ValueType>
+std::vector<std::vector<Value<ValueType> > > makeOrderedValues(size_t N,
+                                                               Order O) {
+  std::vector<std::vector<Value<ValueType> > > Ret;
+  const size_t NumCopies = std::max(size_t{1}, TestSetElements / N);
+  Ret.resize(NumCopies);
+  for (auto& V : Ret) {
+    fillValues(V, N, O);
+    sortValues(V, O);
+  }
+  return Ret;
+}
+
+template <class T, class U>
+TEST_ALWAYS_INLINE void resetCopies(benchmark::State& state, T& Copies,
+                                    U& Orig) {
+  state.PauseTiming();
+  for (auto& Copy : Copies)
+    Copy = Orig;
+  state.ResumeTiming();
+}
+
+enum class BatchSize {
+  CountElements,
+  CountBatch,
+};
+
+template <class ValueType, class F>
+void runOpOnCopies(benchmark::State& state, size_t Quantity, Order O,
+                   BatchSize Count, F Body) {
+  auto Copies = makeOrderedValues<ValueType>(Quantity, O);
+  auto Orig = Copies;
+
+  const size_t Batch = Count == BatchSize::CountElements
+                           ? Copies.size() * Quantity
+                           : Copies.size();
+  while (state.KeepRunningBatch(Batch)) {
+    for (auto& Copy : Copies) {
+      Body(Copy);
+      benchmark::DoNotOptimize(Copy);
+    }
+    state.PauseTiming();
+    Copies = Orig;
+    state.ResumeTiming();
+  }
+}
+
+
+const std::vector<size_t> Quantities = {1 << 0, 1 << 2,  1 << 4,  1 << 6,
+                                        1 << 8, 1 << 10, 1 << 14,
+    // Running each benchmark in parallel consumes too much memory with MSAN
+    // and can lead to the test process being killed.
+#if !TEST_HAS_FEATURE(memory_sanitizer)
+                                        1 << 18
+#endif
+};
+
+#endif // LIBCXX_ALGORITHMS_COMMON_H
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/lower_bound.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/lower_bound.bench.cpp
new file mode 100644
index 0000000..ce366d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/lower_bound.bench.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <numeric>
+#include <random>
+#include <vector>
+
+#include "common.h"
+
+namespace {
+template <class ValueType>
+struct LowerBound {
+  size_t Quantity;
+
+  mutable std::mt19937_64 rng { std::random_device{}() };
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(state, Quantity, Order::Ascending, BatchSize::CountBatch, [&](auto& Copy) {
+      auto result = std::lower_bound(Copy.begin(), Copy.end(), Copy[rng() % Copy.size()]);
+      benchmark::DoNotOptimize(result);
+    });
+  }
+
+  std::string name() const {
+    return "BM_LowerBound" + ValueType::name() + "_" + std::to_string(Quantity);
+  }
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<LowerBound, AllValueTypes>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/make_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/make_heap.bench.cpp
new file mode 100644
index 0000000..e2caf84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/make_heap.bench.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct MakeHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements,
+        [](auto& Copy) { std::make_heap(Copy.begin(), Copy.end()); });
+  }
+
+  std::string name() const {
+    return "BM_MakeHeap" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<MakeHeap, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/make_heap_then_sort_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/make_heap_then_sort_heap.bench.cpp
new file mode 100644
index 0000000..5254c26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/make_heap_then_sort_heap.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct MakeThenSortHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(state, Quantity, Order(), BatchSize::CountElements,
+                             [](auto& Copy) {
+                               std::make_heap(Copy.begin(), Copy.end());
+                               std::sort_heap(Copy.begin(), Copy.end());
+                             });
+  }
+
+  std::string name() const {
+    return "BM_MakeThenSortHeap" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<MakeThenSortHeap, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/min_max_element.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/min_max_element.bench.cpp
new file mode 100644
index 0000000..e2c6423
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/min_max_element.bench.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct MinMaxElement {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(state, Quantity, Order(), BatchSize::CountElements, [](auto& Copy) {
+      benchmark::DoNotOptimize(std::minmax_element(Copy.begin(), Copy.end()));
+    });
+  }
+
+  std::string name() const {
+    return "BM_MinMaxElement" + ValueType::name() + Order::name() + "_" + std::to_string(Quantity);
+  }
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<MinMaxElement, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/pop_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/pop_heap.bench.cpp
new file mode 100644
index 0000000..ef6e5a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/pop_heap.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType>
+struct PopHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements, [](auto& Copy) {
+          for (auto B = Copy.begin(), I = Copy.end(); I != B; --I) {
+            std::pop_heap(B, I);
+          }
+        });
+  }
+
+  std::string name() const {
+    return "BM_PopHeap" + ValueType::name() + "_" + std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<PopHeap, AllValueTypes>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/push_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/push_heap.bench.cpp
new file mode 100644
index 0000000..8c33324
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/push_heap.bench.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct PushHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements, [](auto& Copy) {
+          for (auto I = Copy.begin(), E = Copy.end(); I != E; ++I) {
+            std::push_heap(Copy.begin(), I + 1);
+          }
+        });
+  }
+
+  bool skip() const { return Order() == ::Order::Heap; }
+
+  std::string name() const {
+    return "BM_PushHeap" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<PushHeap, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_make_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_make_heap.bench.cpp
new file mode 100644
index 0000000..b5b6132
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_make_heap.bench.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct RangesMakeHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements,
+        [](auto& Copy) { std::ranges::make_heap(Copy); });
+  }
+
+  std::string name() const {
+    return "BM_RangesMakeHeap" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<RangesMakeHeap, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_make_heap_then_sort_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_make_heap_then_sort_heap.bench.cpp
new file mode 100644
index 0000000..f286951
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_make_heap_then_sort_heap.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct RangesMakeThenSortHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(state, Quantity, Order(), BatchSize::CountElements,
+                             [](auto& Copy) {
+                               std::ranges::make_heap(Copy);
+                               std::ranges::sort_heap(Copy);
+                             });
+  }
+
+  std::string name() const {
+    return "BM_RangesMakeThenSortHeap" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<RangesMakeThenSortHeap, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_pop_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_pop_heap.bench.cpp
new file mode 100644
index 0000000..b26ccdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_pop_heap.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType>
+struct RangesPopHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements, [](auto& Copy) {
+          for (auto B = Copy.begin(), I = Copy.end(); I != B; --I) {
+            std::ranges::pop_heap(B, I);
+          }
+        });
+  }
+
+  std::string name() const {
+    return "BM_RangesPopHeap" + ValueType::name() + "_" + std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<RangesPopHeap, AllValueTypes>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_push_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_push_heap.bench.cpp
new file mode 100644
index 0000000..28ccf41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_push_heap.bench.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct RangesPushHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements, [](auto& Copy) {
+          for (auto I = Copy.begin(), E = Copy.end(); I != E; ++I) {
+            std::ranges::push_heap(Copy.begin(), I + 1);
+          }
+        });
+  }
+
+  bool skip() const { return Order() == ::Order::Heap; }
+
+  std::string name() const {
+    return "BM_RangesPushHeap" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<RangesPushHeap, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_sort.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_sort.bench.cpp
new file mode 100644
index 0000000..b9299d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_sort.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct Sort {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements,
+        [](auto& Copy) { std::ranges::sort(Copy); });
+  }
+
+  bool skip() const { return Order() == ::Order::Heap; }
+
+  std::string name() const {
+    return "BM_RangesSort" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  }
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<Sort, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_sort_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_sort_heap.bench.cpp
new file mode 100644
index 0000000..12828a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_sort_heap.bench.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType>
+struct RangesSortHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order::Heap, BatchSize::CountElements,
+        [](auto& Copy) { std::ranges::sort_heap(Copy); });
+  }
+
+  std::string name() const {
+    return "BM_RangesSortHeap" + ValueType::name() + "_" + std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<RangesSortHeap, AllValueTypes>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_stable_sort.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_stable_sort.bench.cpp
new file mode 100644
index 0000000..94f8003
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/ranges_stable_sort.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct StableSort {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements,
+        [](auto& Copy) { std::ranges::stable_sort(Copy); });
+  }
+
+  bool skip() const { return Order() == ::Order::Heap; }
+
+  std::string name() const {
+    return "BM_RangesStableSort" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  }
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<StableSort, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/sort.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/sort.bench.cpp
new file mode 100644
index 0000000..6f8b12e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/sort.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct Sort {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements,
+        [](auto& Copy) { std::sort(Copy.begin(), Copy.end()); });
+  }
+
+  bool skip() const { return Order() == ::Order::Heap; }
+
+  std::string name() const {
+    return "BM_Sort" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<Sort, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/sort_heap.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/sort_heap.bench.cpp
new file mode 100644
index 0000000..a217211
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/sort_heap.bench.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType>
+struct SortHeap {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order::Heap, BatchSize::CountElements,
+        [](auto& Copy) { std::sort_heap(Copy.begin(), Copy.end()); });
+  }
+
+  std::string name() const {
+    return "BM_SortHeap" + ValueType::name() + "_" + std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<SortHeap, AllValueTypes>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/algorithms/stable_sort.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/algorithms/stable_sort.bench.cpp
new file mode 100644
index 0000000..1ef55ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/algorithms/stable_sort.bench.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+#include "common.h"
+
+namespace {
+template <class ValueType, class Order>
+struct StableSort {
+  size_t Quantity;
+
+  void run(benchmark::State& state) const {
+    runOpOnCopies<ValueType>(
+        state, Quantity, Order(), BatchSize::CountElements,
+        [](auto& Copy) { std::stable_sort(Copy.begin(), Copy.end()); });
+  }
+
+  bool skip() const { return Order() == ::Order::Heap; }
+
+  std::string name() const {
+    return "BM_StableSort" + ValueType::name() + Order::name() + "_" +
+           std::to_string(Quantity);
+  };
+};
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+  makeCartesianProductBenchmark<StableSort, AllValueTypes, AllOrders>(Quantities);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/allocation.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/allocation.bench.cpp
new file mode 100644
index 0000000..ad962de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/allocation.bench.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "benchmark/benchmark.h"
+
+#include <new>
+#include <vector>
+#include <cassert>
+
+struct PointerList {
+  PointerList* Next = nullptr;
+};
+
+struct MallocWrapper {
+  __attribute__((always_inline))
+  static void* Allocate(size_t N) {
+    return std::malloc(N);
+  }
+  __attribute__((always_inline))
+  static void Deallocate(void* P, size_t) {
+    std::free(P);
+  }
+};
+
+struct NewWrapper {
+  __attribute__((always_inline))
+  static void* Allocate(size_t N) {
+    return ::operator new(N);
+  }
+  __attribute__((always_inline))
+  static void Deallocate(void* P, size_t) {
+    ::operator delete(P);
+  }
+};
+
+struct BuiltinNewWrapper {
+  __attribute__((always_inline))
+  static void* Allocate(size_t N) {
+    return __builtin_operator_new(N);
+  }
+  __attribute__((always_inline))
+  static void Deallocate(void* P, size_t) {
+    __builtin_operator_delete(P);
+  }
+};
+
+struct BuiltinSizedNewWrapper {
+  __attribute__((always_inline))
+  static void* Allocate(size_t N) {
+    return __builtin_operator_new(N);
+  }
+  __attribute__((always_inline))
+  static void Deallocate(void* P, size_t N) {
+    __builtin_operator_delete(P, N);
+  }
+};
+
+
+template <class AllocWrapper>
+static void BM_AllocateAndDeallocate(benchmark::State& st) {
+  const size_t alloc_size = st.range(0);
+  while (st.KeepRunning()) {
+    void* p = AllocWrapper::Allocate(alloc_size);
+    benchmark::DoNotOptimize(p);
+    AllocWrapper::Deallocate(p, alloc_size);
+  }
+}
+
+
+template <class AllocWrapper>
+static void BM_AllocateOnly(benchmark::State& st) {
+  const size_t alloc_size = st.range(0);
+  PointerList *Start = nullptr;
+
+  while (st.KeepRunning()) {
+    PointerList* p = (PointerList*)AllocWrapper::Allocate(alloc_size);
+    benchmark::DoNotOptimize(p);
+    p->Next = Start;
+    Start = p;
+  }
+
+  PointerList *Next = Start;
+  while (Next) {
+    PointerList *Tmp = Next;
+    Next = Tmp->Next;
+    AllocWrapper::Deallocate(Tmp, alloc_size);
+  }
+}
+
+template <class AllocWrapper>
+static void BM_DeallocateOnly(benchmark::State& st) {
+  const size_t alloc_size = st.range(0);
+  const auto NumAllocs = st.max_iterations;
+
+  std::vector<void*> Pointers(NumAllocs);
+  for (auto& p : Pointers) {
+    p = AllocWrapper::Allocate(alloc_size);
+  }
+
+  void** Data = Pointers.data();
+  void** const End = Pointers.data() + Pointers.size();
+  while (st.KeepRunning()) {
+    AllocWrapper::Deallocate(*Data, alloc_size);
+    Data += 1;
+  }
+  assert(Data == End);
+}
+
+static int RegisterAllocBenchmarks() {
+  using FnType = void(*)(benchmark::State&);
+  struct {
+    const char* name;
+    FnType func;
+  } TestCases[] = {
+      {"BM_Malloc", &BM_AllocateAndDeallocate<MallocWrapper>},
+      {"BM_New", &BM_AllocateAndDeallocate<NewWrapper>},
+      {"BM_BuiltinNewDelete", BM_AllocateAndDeallocate<BuiltinNewWrapper>},
+      {"BM_BuiltinSizedNewDelete", BM_AllocateAndDeallocate<BuiltinSizedNewWrapper>},
+      {"BM_BuiltinNewAllocateOnly", BM_AllocateOnly<BuiltinSizedNewWrapper>},
+      {"BM_BuiltinNewSizedDeallocateOnly", BM_DeallocateOnly<BuiltinSizedNewWrapper>},
+
+  };
+  for (auto TC : TestCases) {
+    benchmark::RegisterBenchmark(TC.name, TC.func)->Range(16, 4096 * 2);
+  }
+  return 0;
+}
+int Sink = RegisterAllocBenchmarks();
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/deque.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/deque.bench.cpp
new file mode 100644
index 0000000..61b45cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/deque.bench.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <deque>
+
+#include "benchmark/benchmark.h"
+
+#include "ContainerBenchmarks.h"
+#include "GenerateInput.h"
+
+using namespace ContainerBenchmarks;
+
+constexpr std::size_t TestNumInputs = 1024;
+
+BENCHMARK_CAPTURE(BM_ConstructSize,
+    deque_byte,
+    std::deque<unsigned char>{})->Arg(5140480);
+
+BENCHMARK_CAPTURE(BM_ConstructSizeValue,
+    deque_byte,
+    std::deque<unsigned char>{}, 0)->Arg(5140480);
+
+BENCHMARK_CAPTURE(BM_ConstructIterIter,
+  deque_char,
+  std::deque<char>{},
+  getRandomIntegerInputs<char>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_ConstructIterIter,
+  deque_size_t,
+  std::deque<size_t>{},
+  getRandomIntegerInputs<size_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_ConstructIterIter,
+  deque_string,
+  std::deque<std::string>{},
+  getRandomStringInputs)->Arg(TestNumInputs);
+
+
+
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/deque_iterator.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/deque_iterator.bench.cpp
new file mode 100644
index 0000000..0eb23f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/deque_iterator.bench.cpp
@@ -0,0 +1,232 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <deque>
+
+#include "benchmark/benchmark.h"
+
+namespace {
+void run_sizes(auto benchmark) {
+  benchmark->Arg(0)
+      ->Arg(1)
+      ->Arg(2)
+      ->Arg(64)
+      ->Arg(512)
+      ->Arg(1024)
+      ->Arg(4000)
+      ->Arg(4096)
+      ->Arg(5500)
+      ->Arg(64000)
+      ->Arg(65536)
+      ->Arg(70000);
+}
+
+template <class FromContainer, class ToContainer, class Func>
+void benchmark_containers(benchmark::State& state, FromContainer& d, ToContainer& v, Func&& func) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(v);
+    benchmark::DoNotOptimize(d);
+    func(d.begin(), d.end(), v.begin());
+  }
+}
+
+template <class Func>
+void benchmark_deque_vector(benchmark::State& state, Func&& func) {
+  auto size = state.range(0);
+  std::deque<int> d;
+  d.resize(size);
+  std::ranges::fill(d, 10);
+  std::vector<int> v;
+  v.resize(size);
+  benchmark_containers(state, d, v, func);
+}
+
+template <class Func>
+void benchmark_deque_deque(benchmark::State& state, Func&& func) {
+  auto size = state.range(0);
+  std::deque<int> d;
+  d.resize(size);
+  std::ranges::fill(d, 10);
+  std::deque<int> v;
+  v.resize(size);
+  benchmark_containers(state, d, v, func);
+}
+
+template <class Func>
+void benchmark_vector_deque(benchmark::State& state, Func&& func) {
+  auto size = state.range(0);
+  std::vector<int> d;
+  d.resize(size);
+  std::ranges::fill(d, 10);
+  std::deque<int> v;
+  v.resize(size);
+  benchmark_containers(state, d, v, func);
+}
+
+template <class FromContainer, class ToContainer, class Func>
+void benchmark_containers_backward(benchmark::State& state, FromContainer& d, ToContainer& v, Func&& func) {
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(v);
+    benchmark::DoNotOptimize(d);
+    func(d.begin(), d.end(), v.end());
+  }
+}
+
+template <class Func>
+void benchmark_deque_vector_backward(benchmark::State& state, Func&& func) {
+  auto size = state.range(0);
+  std::deque<int> d;
+  d.resize(size);
+  std::ranges::fill(d, 10);
+  std::vector<int> v;
+  v.resize(size);
+  benchmark_containers_backward(state, d, v, func);
+}
+
+template <class Func>
+void benchmark_deque_deque_backward(benchmark::State& state, Func&& func) {
+  auto size = state.range(0);
+  std::deque<int> d;
+  d.resize(size);
+  std::ranges::fill(d, 10);
+  std::deque<int> v;
+  v.resize(size);
+  benchmark_containers_backward(state, d, v, func);
+}
+
+template <class Func>
+void benchmark_vector_deque_backward(benchmark::State& state, Func&& func) {
+  auto size = state.range(0);
+  std::vector<int> d;
+  d.resize(size);
+  std::ranges::fill(d, 10);
+  std::deque<int> v;
+  v.resize(size);
+  benchmark_containers_backward(state, d, v, func);
+}
+
+struct CopyFunctor {
+  template <class... Args>
+  auto operator()(Args... args) const {
+    std::copy(std::forward<Args>(args)...);
+  }
+} copy;
+
+struct MoveFunctor {
+  template <class... Args>
+  auto operator()(Args... args) const {
+    std::move(std::forward<Args>(args)...);
+  }
+} move;
+
+struct CopyBackwardFunctor {
+  template <class... Args>
+  auto operator()(Args... args) const {
+    std::copy_backward(std::forward<Args>(args)...);
+  }
+} copy_backward;
+
+struct MoveBackwardFunctor {
+  template <class... Args>
+  auto operator()(Args... args) const {
+    std::move_backward(std::forward<Args>(args)...);
+  }
+} move_backward;
+
+// copy
+void BM_deque_vector_copy(benchmark::State& state) { benchmark_deque_vector(state, copy); }
+BENCHMARK(BM_deque_vector_copy)->Apply(run_sizes);
+
+void BM_deque_vector_ranges_copy(benchmark::State& state) { benchmark_deque_vector(state, std::ranges::copy); }
+BENCHMARK(BM_deque_vector_ranges_copy)->Apply(run_sizes);
+
+void BM_deque_deque_copy(benchmark::State& state) { benchmark_deque_deque(state, copy); }
+BENCHMARK(BM_deque_deque_copy)->Apply(run_sizes);
+
+void BM_deque_deque_ranges_copy(benchmark::State& state) { benchmark_deque_deque(state, std::ranges::copy); }
+BENCHMARK(BM_deque_deque_ranges_copy)->Apply(run_sizes);
+
+void BM_vector_deque_copy(benchmark::State& state) { benchmark_vector_deque(state, copy); }
+BENCHMARK(BM_vector_deque_copy)->Apply(run_sizes);
+
+void BM_vector_deque_ranges_copy(benchmark::State& state) { benchmark_vector_deque(state, std::ranges::copy); }
+BENCHMARK(BM_vector_deque_ranges_copy)->Apply(run_sizes);
+
+// move
+void BM_deque_vector_move(benchmark::State& state) { benchmark_deque_vector(state, move); }
+BENCHMARK(BM_deque_vector_move)->Apply(run_sizes);
+
+void BM_deque_vector_ranges_move(benchmark::State& state) { benchmark_deque_vector(state, std::ranges::move); }
+BENCHMARK(BM_deque_vector_ranges_move)->Apply(run_sizes);
+
+void BM_deque_deque_move(benchmark::State& state) { benchmark_deque_deque(state, move); }
+BENCHMARK(BM_deque_deque_move)->Apply(run_sizes);
+
+void BM_deque_deque_ranges_move(benchmark::State& state) { benchmark_deque_deque(state, std::ranges::move); }
+BENCHMARK(BM_deque_deque_ranges_move)->Apply(run_sizes);
+
+void BM_vector_deque_move(benchmark::State& state) { benchmark_vector_deque(state, move); }
+BENCHMARK(BM_vector_deque_move)->Apply(run_sizes);
+
+void BM_vector_deque_ranges_move(benchmark::State& state) { benchmark_vector_deque(state, std::ranges::move); }
+BENCHMARK(BM_vector_deque_ranges_move)->Apply(run_sizes);
+
+// copy_backward
+void BM_deque_vector_copy_backward(benchmark::State& state) { benchmark_deque_vector_backward(state, copy_backward); }
+BENCHMARK(BM_deque_vector_copy_backward)->Apply(run_sizes);
+
+void BM_deque_vector_ranges_copy_backward(benchmark::State& state) {
+  benchmark_deque_vector_backward(state, std::ranges::copy_backward);
+}
+BENCHMARK(BM_deque_vector_ranges_copy_backward)->Apply(run_sizes);
+
+void BM_deque_deque_copy_backward(benchmark::State& state) { benchmark_deque_deque_backward(state, copy_backward); }
+BENCHMARK(BM_deque_deque_copy_backward)->Apply(run_sizes);
+
+void BM_deque_deque_ranges_copy_backward(benchmark::State& state) {
+  benchmark_deque_deque_backward(state, std::ranges::copy_backward);
+}
+BENCHMARK(BM_deque_deque_ranges_copy_backward)->Apply(run_sizes);
+
+void BM_vector_deque_copy_backward(benchmark::State& state) { benchmark_vector_deque_backward(state, copy_backward); }
+BENCHMARK(BM_vector_deque_copy_backward)->Apply(run_sizes);
+
+void BM_vector_deque_ranges_copy_backward(benchmark::State& state) {
+  benchmark_vector_deque_backward(state, std::ranges::copy_backward);
+}
+BENCHMARK(BM_vector_deque_ranges_copy_backward)->Apply(run_sizes);
+
+// move_backward
+void BM_deque_vector_move_backward(benchmark::State& state) { benchmark_deque_vector_backward(state, move_backward); }
+BENCHMARK(BM_deque_vector_move_backward)->Apply(run_sizes);
+
+void BM_deque_vector_ranges_move_backward(benchmark::State& state) {
+  benchmark_deque_vector_backward(state, std::ranges::move_backward);
+}
+BENCHMARK(BM_deque_vector_ranges_move_backward)->Apply(run_sizes);
+
+void BM_deque_deque_move_backward(benchmark::State& state) { benchmark_deque_deque_backward(state, move_backward); }
+BENCHMARK(BM_deque_deque_move_backward)->Apply(run_sizes);
+
+void BM_deque_deque_ranges_move_backward(benchmark::State& state) {
+  benchmark_deque_deque_backward(state, std::ranges::move_backward);
+}
+BENCHMARK(BM_deque_deque_ranges_move_backward)->Apply(run_sizes);
+
+void BM_vector_deque_move_backward(benchmark::State& state) { benchmark_vector_deque_backward(state, move_backward); }
+BENCHMARK(BM_vector_deque_move_backward)->Apply(run_sizes);
+
+void BM_vector_deque_ranges_move_backward(benchmark::State& state) {
+  benchmark_vector_deque_backward(state, std::ranges::move_backward);
+}
+BENCHMARK(BM_vector_deque_ranges_move_backward)->Apply(run_sizes);
+
+} // namespace
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/filesystem.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/filesystem.bench.cpp
new file mode 100644
index 0000000..4fe4fc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/filesystem.bench.cpp
@@ -0,0 +1,163 @@
+#include "benchmark/benchmark.h"
+#include "GenerateInput.h"
+#include "test_iterators.h"
+#include "filesystem_include.h"
+
+static const size_t TestNumInputs = 1024;
+
+
+template <class GenInputs>
+void BM_PathConstructString(benchmark::State &st, GenInputs gen) {
+  using fs::path;
+  const auto in = gen(st.range(0));
+  path PP;
+  for (auto& Part : in)
+    PP /= Part;
+  benchmark::DoNotOptimize(PP.native().data());
+  while (st.KeepRunning()) {
+    const path P(PP.native());
+    benchmark::DoNotOptimize(P.native().data());
+  }
+  st.SetComplexityN(st.range(0));
+}
+BENCHMARK_CAPTURE(BM_PathConstructString, large_string,
+  getRandomStringInputs)->Range(8, TestNumInputs)->Complexity();
+
+
+template <class GenInputs>
+void BM_PathConstructCStr(benchmark::State &st, GenInputs gen) {
+  using fs::path;
+  const auto in = gen(st.range(0));
+  path PP;
+  for (auto& Part : in)
+    PP /= Part;
+  benchmark::DoNotOptimize(PP.native().data());
+  while (st.KeepRunning()) {
+    const path P(PP.native().c_str());
+    benchmark::DoNotOptimize(P.native().data());
+  }
+}
+BENCHMARK_CAPTURE(BM_PathConstructCStr, large_string,
+  getRandomStringInputs)->Arg(TestNumInputs);
+
+
+template <template <class...> class ItType, class GenInputs>
+void BM_PathConstructIter(benchmark::State &st, GenInputs gen) {
+  using fs::path;
+  using Iter = ItType<std::string::const_iterator>;
+  const auto in = gen(st.range(0));
+  path PP;
+  for (auto& Part : in)
+    PP /= Part;
+  auto Start = Iter(PP.native().begin());
+  auto End = Iter(PP.native().end());
+  benchmark::DoNotOptimize(PP.native().data());
+  benchmark::DoNotOptimize(Start);
+  benchmark::DoNotOptimize(End);
+  while (st.KeepRunning()) {
+    const path P(Start, End);
+    benchmark::DoNotOptimize(P.native().data());
+  }
+  st.SetComplexityN(st.range(0));
+}
+template <class GenInputs>
+void BM_PathConstructInputIter(benchmark::State &st, GenInputs gen) {
+  BM_PathConstructIter<cpp17_input_iterator>(st, gen);
+}
+template <class GenInputs>
+void BM_PathConstructForwardIter(benchmark::State &st, GenInputs gen) {
+  BM_PathConstructIter<forward_iterator>(st, gen);
+}
+BENCHMARK_CAPTURE(BM_PathConstructInputIter, large_string,
+  getRandomStringInputs)->Range(8, TestNumInputs)->Complexity();
+BENCHMARK_CAPTURE(BM_PathConstructForwardIter, large_string,
+  getRandomStringInputs)->Range(8, TestNumInputs)->Complexity();
+
+
+template <class GenInputs>
+void BM_PathIterateMultipleTimes(benchmark::State &st, GenInputs gen) {
+  using fs::path;
+  const auto in = gen(st.range(0));
+  path PP;
+  for (auto& Part : in)
+    PP /= Part;
+  benchmark::DoNotOptimize(PP.native().data());
+  while (st.KeepRunning()) {
+    for (auto const& E : PP) {
+      benchmark::DoNotOptimize(E.native().data());
+    }
+    benchmark::ClobberMemory();
+  }
+  st.SetComplexityN(st.range(0));
+}
+BENCHMARK_CAPTURE(BM_PathIterateMultipleTimes, iterate_elements,
+  getRandomStringInputs)->Range(8, TestNumInputs)->Complexity();
+
+
+template <class GenInputs>
+void BM_PathIterateOnce(benchmark::State &st, GenInputs gen) {
+  using fs::path;
+  const auto in = gen(st.range(0));
+  path PP;
+  for (auto& Part : in)
+    PP /= Part;
+  benchmark::DoNotOptimize(PP.native().data());
+  while (st.KeepRunning()) {
+    const path P = PP.native();
+    for (auto const& E : P) {
+      benchmark::DoNotOptimize(E.native().data());
+    }
+    benchmark::ClobberMemory();
+  }
+  st.SetComplexityN(st.range(0));
+}
+BENCHMARK_CAPTURE(BM_PathIterateOnce, iterate_elements,
+  getRandomStringInputs)->Range(8, TestNumInputs)->Complexity();
+
+template <class GenInputs>
+void BM_PathIterateOnceBackwards(benchmark::State &st, GenInputs gen) {
+  using fs::path;
+  const auto in = gen(st.range(0));
+  path PP;
+  for (auto& Part : in)
+    PP /= Part;
+  benchmark::DoNotOptimize(PP.native().data());
+  while (st.KeepRunning()) {
+    const path P = PP.native();
+    const auto B = P.begin();
+    auto I = P.end();
+    while (I != B) {
+      --I;
+      benchmark::DoNotOptimize(*I);
+    }
+    benchmark::DoNotOptimize(*I);
+  }
+}
+BENCHMARK_CAPTURE(BM_PathIterateOnceBackwards, iterate_elements,
+  getRandomStringInputs)->Arg(TestNumInputs);
+
+static fs::path getRandomPaths(int NumParts, int PathLen) {
+  fs::path Result;
+  while (NumParts--) {
+    std::string Part = getRandomString(PathLen);
+    Result /= Part;
+  }
+  return Result;
+}
+
+template <class GenInput>
+void BM_LexicallyNormal(benchmark::State &st, GenInput gen, size_t PathLen) {
+  using fs::path;
+  auto In = gen(st.range(0), PathLen);
+  benchmark::DoNotOptimize(&In);
+  while (st.KeepRunning()) {
+    benchmark::DoNotOptimize(In.lexically_normal());
+  }
+  st.SetComplexityN(st.range(0));
+}
+BENCHMARK_CAPTURE(BM_LexicallyNormal, small_path,
+  getRandomPaths, /*PathLen*/5)->RangeMultiplier(2)->Range(2, 256)->Complexity();
+BENCHMARK_CAPTURE(BM_LexicallyNormal, large_path,
+  getRandomPaths, /*PathLen*/32)->RangeMultiplier(2)->Range(2, 256)->Complexity();
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/format.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/format.bench.cpp
new file mode 100644
index 0000000..89f1132
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/format.bench.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <format>
+
+#include <string>
+
+#include "benchmark/benchmark.h"
+#include "make_string.h"
+
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+template <class CharT>
+static void BM_format_string(benchmark::State& state) {
+  size_t size = state.range(0);
+  std::basic_string<CharT> str(size, CharT('*'));
+
+  while (state.KeepRunningBatch(str.size()))
+    benchmark::DoNotOptimize(std::format(CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+BENCHMARK_TEMPLATE(BM_format_string, char)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_string, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20);
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/format_to.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/format_to.bench.cpp
new file mode 100644
index 0000000..4d64897
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/format_to.bench.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <format>
+
+#include <iterator>
+#include <algorithm>
+#include <array>
+#include <list>
+#include <span>
+#include <string>
+#include <vector>
+
+#include "benchmark/benchmark.h"
+#include "make_string.h"
+
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+/*** Back inserter ***/
+
+template <class Container>
+static void BM_format_to_string_back_inserter(benchmark::State& state) {
+  using CharT = typename Container::value_type;
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(size, CharT('*'));
+
+  for (auto _ : state) {
+    Container output;
+    benchmark::DoNotOptimize(std::format_to(std::back_inserter(output), CSTR("{}"), str));
+  }
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+/*** Begin ***/
+
+template <class Container>
+static void BM_format_to_string_begin(benchmark::State& state) {
+  using CharT = typename Container::value_type;
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(size, CharT('*'));
+
+  Container output(size, CharT('-'));
+  for (auto _ : state)
+    benchmark::DoNotOptimize(std::format_to(std::begin(output), CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+/*** Pointer ***/
+
+template <class CharT>
+static void BM_format_to_string_span(benchmark::State& state) {
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(size, CharT('*'));
+
+  auto buffer = std::basic_string<CharT>(size, CharT('-'));
+  std::span<CharT> output{buffer};
+  for (auto _ : state)
+    benchmark::DoNotOptimize(std::format_to(std::begin(output), CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+template <class CharT>
+static void BM_format_to_string_pointer(benchmark::State& state) {
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(size, CharT('*'));
+
+  auto buffer = std::basic_string<CharT>(size, CharT('-'));
+  CharT* output = buffer.data();
+  for (auto _ : state)
+    benchmark::DoNotOptimize(std::format_to(output, CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+/*** Main ***/
+
+BENCHMARK_TEMPLATE(BM_format_to_string_back_inserter, std::string)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_back_inserter, std::vector<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_back_inserter, std::list<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_begin, std::string)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_begin, std::vector<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_begin, std::list<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_span, char)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_pointer, char)->RangeMultiplier(2)->Range(1, 1 << 20);
+
+BENCHMARK_TEMPLATE(BM_format_to_string_back_inserter, std::wstring)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_back_inserter, std::vector<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_back_inserter, std::list<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_begin, std::wstring)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_begin, std::vector<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_begin, std::list<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_span, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_string_pointer, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20);
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/format_to_n.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/format_to_n.bench.cpp
new file mode 100644
index 0000000..c1e52b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/format_to_n.bench.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <format>
+
+#include <iterator>
+#include <algorithm>
+#include <array>
+#include <list>
+#include <span>
+#include <string>
+#include <vector>
+
+#include "benchmark/benchmark.h"
+#include "make_string.h"
+
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+/*** Back inserter ***/
+
+template <class Container>
+static void BM_format_to_n_string_back_inserter(benchmark::State& state) {
+  using CharT = typename Container::value_type;
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(2 * size, CharT('*'));
+
+  for (auto _ : state) {
+    Container output;
+    benchmark::DoNotOptimize(std::format_to_n(std::back_inserter(output), size, CSTR("{}"), str));
+  }
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+/*** Begin ***/
+
+template <class Container>
+static void BM_format_to_n_string_begin(benchmark::State& state) {
+  using CharT = typename Container::value_type;
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(2 * size, CharT('*'));
+
+  Container output(size, CharT('-'));
+  for (auto _ : state)
+    benchmark::DoNotOptimize(std::format_to_n(std::begin(output), size, CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+/*** Pointer ***/
+
+template <class CharT>
+static void BM_format_to_n_string_span(benchmark::State& state) {
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(2 * size, CharT('*'));
+
+  auto buffer = std::basic_string<CharT>(size, CharT('-'));
+  std::span<CharT> output{buffer};
+  for (auto _ : state)
+    benchmark::DoNotOptimize(std::format_to_n(std::begin(output), size, CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+template <class CharT>
+static void BM_format_to_n_string_pointer(benchmark::State& state) {
+  size_t size = state.range(0);
+  auto str = std::basic_string<CharT>(2 * size, CharT('*'));
+
+  auto buffer = std::basic_string<CharT>(size, CharT('-'));
+  CharT* output = buffer.data();
+  for (auto _ : state)
+    benchmark::DoNotOptimize(std::format_to_n(output, size, CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+
+/*** Main ***/
+
+BENCHMARK_TEMPLATE(BM_format_to_n_string_back_inserter, std::string)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_back_inserter, std::vector<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_back_inserter, std::list<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_begin, std::string)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_begin, std::vector<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_begin, std::list<char>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_span, char)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_pointer, char)->RangeMultiplier(2)->Range(1, 1 << 20);
+
+BENCHMARK_TEMPLATE(BM_format_to_n_string_back_inserter, std::wstring)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_back_inserter, std::vector<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_back_inserter, std::list<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_begin, std::wstring)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_begin, std::vector<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_begin, std::list<wchar_t>)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_span, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_format_to_n_string_pointer, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20);
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/formatted_size.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/formatted_size.bench.cpp
new file mode 100644
index 0000000..de67dae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/formatted_size.bench.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <format>
+
+#include <string>
+
+#include "benchmark/benchmark.h"
+#include "make_string.h"
+
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+template <class CharT>
+static void BM_formatted_size_string(benchmark::State& state) {
+  size_t size = state.range(0);
+  std::basic_string<CharT> str(size, CharT('*'));
+
+  while (state.KeepRunningBatch(str.size()))
+    benchmark::DoNotOptimize(std::formatted_size(CSTR("{}"), str));
+
+  state.SetBytesProcessed(state.iterations() * size * sizeof(CharT));
+}
+BENCHMARK_TEMPLATE(BM_formatted_size_string, char)->RangeMultiplier(2)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_formatted_size_string, wchar_t)->RangeMultiplier(2)->Range(1, 1 << 20);
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/formatter_float.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/formatter_float.bench.cpp
new file mode 100644
index 0000000..09963b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/formatter_float.bench.cpp
@@ -0,0 +1,251 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <format>
+
+#include <array>
+#include <limits>
+#include <random>
+#include <string>
+
+#include "CartesianBenchmarks.h"
+#include "benchmark/benchmark.h"
+
+// *** Localization ***
+enum class LocalizationE { False, True };
+struct AllLocalizations : EnumValuesAsTuple<AllLocalizations, LocalizationE, 2> {
+  static constexpr const char* Names[] = {"LocFalse", "LocTrue"};
+};
+
+template <LocalizationE E>
+struct Localization {};
+
+template <>
+struct Localization<LocalizationE::False> {
+  static constexpr const char* fmt = "";
+};
+
+template <>
+struct Localization<LocalizationE::True> {
+  static constexpr const char* fmt = "L";
+};
+
+// *** Types ***
+enum class TypeE { Float, Double, LongDouble };
+// TODO FMT Set to 3 after to_chars has long double suport.
+struct AllTypes : EnumValuesAsTuple<AllTypes, TypeE, 2> {
+  static constexpr const char* Names[] = {"Float", "Double", "LongDouble"};
+};
+
+template <TypeE E>
+struct Type {};
+
+template <>
+struct Type<TypeE::Float> {
+  using type = float;
+};
+
+template <>
+struct Type<TypeE::Double> {
+  using type = double;
+};
+
+template <>
+struct Type<TypeE::LongDouble> {
+  using type = long double;
+};
+
+// *** Values ***
+enum class ValueE { Inf, Random };
+struct AllValues : EnumValuesAsTuple<AllValues, ValueE, 2> {
+  static constexpr const char* Names[] = {"Inf", "Random"};
+};
+
+template <ValueE E>
+struct Value {};
+
+template <>
+struct Value<ValueE::Inf> {
+  template <class F>
+  static std::array<F, 1000> make_data() {
+    std::array<F, 1000> result;
+    std::fill(result.begin(), result.end(), -std::numeric_limits<F>::infinity());
+    return result;
+  }
+};
+
+template <>
+struct Value<ValueE::Random> {
+  template <class F>
+  static std::array<F, 1000> make_data() {
+    std::random_device seed;
+    std::mt19937 generator(seed());
+    std::uniform_int_distribution<std::conditional_t<sizeof(F) == sizeof(uint32_t), uint32_t, uint64_t>> distribution;
+
+    std::array<F, 1000> result;
+    std::generate(result.begin(), result.end(), [&] {
+      while (true) {
+        auto result = std::bit_cast<F>(distribution(generator));
+        if (std::isfinite(result))
+          return result;
+      }
+    });
+    return result;
+  }
+};
+
+// *** Display Type ***
+enum class DisplayTypeE {
+  Default,
+  Hex,
+  Scientific,
+  Fixed,
+  General,
+};
+struct AllDisplayTypes : EnumValuesAsTuple<AllDisplayTypes, DisplayTypeE, 5> {
+  static constexpr const char* Names[] = {"DisplayDefault", "DisplayHex", "DisplayScientific", "DisplayFixed",
+                                          "DisplayGeneral"};
+};
+
+template <DisplayTypeE E>
+struct DisplayType {};
+
+template <>
+struct DisplayType<DisplayTypeE::Default> {
+  static constexpr const char* fmt = "";
+};
+
+template <>
+struct DisplayType<DisplayTypeE::Hex> {
+  static constexpr const char* fmt = "a";
+};
+
+template <>
+struct DisplayType<DisplayTypeE::Scientific> {
+  static constexpr const char* fmt = "e";
+};
+
+template <>
+struct DisplayType<DisplayTypeE::Fixed> {
+  static constexpr const char* fmt = "f";
+};
+
+template <>
+struct DisplayType<DisplayTypeE::General> {
+  static constexpr const char* fmt = "g";
+};
+
+// *** Alignment ***
+enum class AlignmentE { None, Left, Center, Right, ZeroPadding };
+struct AllAlignments : EnumValuesAsTuple<AllAlignments, AlignmentE, 5> {
+  static constexpr const char* Names[] = {"AlignNone", "AlignmentLeft", "AlignmentCenter", "AlignmentRight",
+                                          "ZeroPadding"};
+};
+
+template <AlignmentE E>
+struct Alignment {};
+
+template <>
+struct Alignment<AlignmentE::None> {
+  static constexpr const char* fmt = "";
+};
+
+template <>
+struct Alignment<AlignmentE::Left> {
+  // Width > PrecisionE::Huge
+  static constexpr const char* fmt = "0<17500";
+};
+
+template <>
+struct Alignment<AlignmentE::Center> {
+  // Width > PrecisionE::Huge
+  static constexpr const char* fmt = "0^17500";
+};
+
+template <>
+struct Alignment<AlignmentE::Right> {
+  // Width > PrecisionE::Huge
+  static constexpr const char* fmt = "0>17500";
+};
+
+template <>
+struct Alignment<AlignmentE::ZeroPadding> {
+  // Width > PrecisionE::Huge
+  static constexpr const char* fmt = "017500";
+};
+
+enum class PrecisionE { None, Zero, Small, Huge };
+struct AllPrecisions : EnumValuesAsTuple<AllPrecisions, PrecisionE, 4> {
+  static constexpr const char* Names[] = {"PrecNone", "PrecZero", "PrecSmall", "PrecHuge"};
+};
+
+template <PrecisionE E>
+struct Precision {};
+
+template <>
+struct Precision<PrecisionE::None> {
+  static constexpr const char* fmt = "";
+};
+
+template <>
+struct Precision<PrecisionE::Zero> {
+  static constexpr const char* fmt = ".0";
+};
+
+template <>
+struct Precision<PrecisionE::Small> {
+  static constexpr const char* fmt = ".10";
+};
+
+template <>
+struct Precision<PrecisionE::Huge> {
+  // The maximum precision for a minimal sub normal long double is +/- 0x1p-16494.
+  // This value is always larger than that value forcing the trailing zero path
+  // to be executed.
+  static constexpr const char* fmt = ".17000";
+};
+
+template <class L, class DT, class T, class V, class A, class P>
+struct FloatingPoint {
+  using F = typename Type<T::value>::type;
+
+  void run(benchmark::State& state) const {
+    std::array<F, 1000> data{Value<V::value>::template make_data<F>()};
+    std::array<char, 20'000> output;
+
+    while (state.KeepRunningBatch(1000))
+      for (F value : data)
+        benchmark::DoNotOptimize(std::format_to(output.begin(), std::string_view{fmt.data(), fmt.size()}, value));
+  }
+
+  std::string name() const {
+    return "FloatingPoint" + L::name() + DT::name() + T::name() + V::name() + A::name() + P::name();
+  }
+
+  static constexpr std::string make_fmt() {
+    return std::string("{:") + Alignment<A::value>::fmt + Precision<P::value>::fmt + Localization<L::value>::fmt +
+           DisplayType<DT::value>::fmt + "}";
+  }
+
+  static constexpr auto fmt = []() {
+    constexpr size_t s = make_fmt().size();
+    std::array<char, s> r;
+    std::ranges::copy(make_fmt(), r.begin());
+    return r;
+  }();
+};
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  makeCartesianProductBenchmark<FloatingPoint, AllLocalizations, AllDisplayTypes, AllTypes, AllValues, AllAlignments,
+                                AllPrecisions>();
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/formatter_int.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/formatter_int.bench.cpp
new file mode 100644
index 0000000..a42d964
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/formatter_int.bench.cpp
@@ -0,0 +1,208 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <array>
+#include <format>
+#include <random>
+
+#include "benchmark/benchmark.h"
+#include "CartesianBenchmarks.h"
+
+// Tests the full range of the value.
+template <class T>
+static std::array<T, 1000>
+generate(std::uniform_int_distribution<T> distribution = std::uniform_int_distribution<T>{
+             std::numeric_limits<T>::min(), std::numeric_limits<T>::max()}) {
+  std::mt19937 generator;
+  std::array<T, 1000> result;
+  std::generate_n(result.begin(), result.size(), [&] { return distribution(generator); });
+  return result;
+}
+
+template <class T>
+static void BM_Basic(benchmark::State& state) {
+  std::array data{generate<T>()};
+  std::array<char, 100> output;
+
+  while (state.KeepRunningBatch(data.size()))
+    for (auto value : data)
+      benchmark::DoNotOptimize(std::format_to(output.begin(), "{}", value));
+}
+BENCHMARK_TEMPLATE(BM_Basic, uint32_t);
+BENCHMARK_TEMPLATE(BM_Basic, int32_t);
+BENCHMARK_TEMPLATE(BM_Basic, uint64_t);
+BENCHMARK_TEMPLATE(BM_Basic, int64_t);
+
+// Ideally the low values of a 128-bit value are all dispatched to a 64-bit routine.
+template <class T>
+static void BM_BasicLow(benchmark::State& state) {
+  using U = std::conditional_t<std::is_signed_v<T>, int64_t, uint64_t>;
+  std::array data{
+      generate<T>(std::uniform_int_distribution<T>{std::numeric_limits<U>::min(), std::numeric_limits<U>::max()})};
+  std::array<char, 100> output;
+
+  while (state.KeepRunningBatch(data.size()))
+    for (auto value : data)
+      benchmark::DoNotOptimize(std::format_to(output.begin(), "{}", value));
+}
+BENCHMARK_TEMPLATE(BM_BasicLow, __uint128_t);
+BENCHMARK_TEMPLATE(BM_BasicLow, __int128_t);
+
+BENCHMARK_TEMPLATE(BM_Basic, __uint128_t);
+BENCHMARK_TEMPLATE(BM_Basic, __int128_t);
+
+// *** Localization ***
+enum class LocalizationE { False, True };
+struct AllLocalizations : EnumValuesAsTuple<AllLocalizations, LocalizationE, 2> {
+  static constexpr const char* Names[] = {"LocFalse", "LocTrue"};
+};
+
+template <LocalizationE E>
+struct Localization {};
+
+template <>
+struct Localization<LocalizationE::False> {
+  static constexpr const char* fmt = "";
+};
+
+template <>
+struct Localization<LocalizationE::True> {
+  static constexpr const char* fmt = "L";
+};
+
+// *** Base ***
+enum class BaseE {
+  Binary,
+  Octal,
+  Decimal,
+  Hex,
+  HexUpper,
+};
+struct AllBases : EnumValuesAsTuple<AllBases, BaseE, 5> {
+  static constexpr const char* Names[] = {"BaseBin", "BaseOct", "BaseDec", "BaseHex", "BaseHexUpper"};
+};
+
+template <BaseE E>
+struct Base {};
+
+template <>
+struct Base<BaseE::Binary> {
+  static constexpr const char* fmt = "b";
+};
+
+template <>
+struct Base<BaseE::Octal> {
+  static constexpr const char* fmt = "o";
+};
+
+template <>
+struct Base<BaseE::Decimal> {
+  static constexpr const char* fmt = "d";
+};
+
+template <>
+struct Base<BaseE::Hex> {
+  static constexpr const char* fmt = "x";
+};
+
+template <>
+struct Base<BaseE::HexUpper> {
+  static constexpr const char* fmt = "X";
+};
+
+// *** Types ***
+enum class TypeE { Int64, Uint64 };
+struct AllTypes : EnumValuesAsTuple<AllTypes, TypeE, 2> {
+  static constexpr const char* Names[] = {"Int64", "Uint64"};
+};
+
+template <TypeE E>
+struct Type {};
+
+template <>
+struct Type<TypeE::Int64> {
+  using type = int64_t;
+
+  static std::array<type, 1000> make_data() { return generate<type>(); }
+};
+
+template <>
+struct Type<TypeE::Uint64> {
+  using type = uint64_t;
+
+  static std::array<type, 1000> make_data() { return generate<type>(); }
+};
+
+// *** Alignment ***
+enum class AlignmentE { None, Left, Center, Right, ZeroPadding };
+struct AllAlignments : EnumValuesAsTuple<AllAlignments, AlignmentE, 5> {
+  static constexpr const char* Names[] = {
+      "AlignNone", "AlignmentLeft", "AlignmentCenter", "AlignmentRight", "ZeroPadding"};
+};
+
+template <AlignmentE E>
+struct Alignment {};
+
+template <>
+struct Alignment<AlignmentE::None> {
+  static constexpr const char* fmt = "";
+};
+
+template <>
+struct Alignment<AlignmentE::Left> {
+  static constexpr const char* fmt = "0<512";
+};
+
+template <>
+struct Alignment<AlignmentE::Center> {
+  static constexpr const char* fmt = "0^512";
+};
+
+template <>
+struct Alignment<AlignmentE::Right> {
+  static constexpr const char* fmt = "0>512";
+};
+
+template <>
+struct Alignment<AlignmentE::ZeroPadding> {
+  static constexpr const char* fmt = "0512";
+};
+
+template <class L, class B, class T, class A>
+struct Integral {
+  void run(benchmark::State& state) const {
+    std::array data{Type<T::value>::make_data()};
+    std::array<char, 512> output;
+
+    while (state.KeepRunningBatch(data.size()))
+      for (auto value : data)
+        benchmark::DoNotOptimize(std::format_to(output.begin(), std::string_view{fmt.data(), fmt.size()}, value));
+  }
+
+  std::string name() const { return "Integral" + L::name() + B::name() + A::name() + T::name(); }
+
+  static constexpr std::string make_fmt() {
+    return std::string("{:") + Alignment<A::value>::fmt + Localization<L::value>::fmt + Base<B::value>::fmt + "}";
+  }
+
+  static constexpr auto fmt = []() {
+    constexpr size_t s = make_fmt().size();
+    std::array<char, s> r;
+    std::ranges::copy(make_fmt(), r.begin());
+    return r;
+  }();
+};
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  makeCartesianProductBenchmark<Integral, AllLocalizations, AllBases, AllTypes, AllAlignments>();
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/function.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/function.bench.cpp
new file mode 100644
index 0000000..7fabc93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/function.bench.cpp
@@ -0,0 +1,231 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstdint>
+#include <functional>
+#include <memory>
+#include <string>
+
+#include "CartesianBenchmarks.h"
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+namespace {
+
+enum class FunctionType {
+  Null,
+  FunctionPointer,
+  MemberFunctionPointer,
+  MemberPointer,
+  SmallTrivialFunctor,
+  SmallNonTrivialFunctor,
+  LargeTrivialFunctor,
+  LargeNonTrivialFunctor
+};
+
+struct AllFunctionTypes : EnumValuesAsTuple<AllFunctionTypes, FunctionType, 8> {
+  static constexpr const char* Names[] = {"Null",
+                                          "FuncPtr",
+                                          "MemFuncPtr",
+                                          "MemPtr",
+                                          "SmallTrivialFunctor",
+                                          "SmallNonTrivialFunctor",
+                                          "LargeTrivialFunctor",
+                                          "LargeNonTrivialFunctor"};
+};
+
+enum class Opacity { kOpaque, kTransparent };
+
+struct AllOpacity : EnumValuesAsTuple<AllOpacity, Opacity, 2> {
+  static constexpr const char* Names[] = {"Opaque", "Transparent"};
+};
+
+struct S {
+  int function() const { return 0; }
+  int field = 0;
+};
+
+int FunctionWithS(const S*) { return 0; }
+
+struct SmallTrivialFunctor {
+  int operator()(const S*) const { return 0; }
+};
+struct SmallNonTrivialFunctor {
+  SmallNonTrivialFunctor() {}
+  SmallNonTrivialFunctor(const SmallNonTrivialFunctor&) {}
+  ~SmallNonTrivialFunctor() {}
+  int operator()(const S*) const { return 0; }
+};
+struct LargeTrivialFunctor {
+  LargeTrivialFunctor() {
+      // Do not spend time initializing the padding.
+  }
+  int padding[16];
+  int operator()(const S*) const { return 0; }
+};
+struct LargeNonTrivialFunctor {
+  int padding[16];
+  LargeNonTrivialFunctor() {
+      // Do not spend time initializing the padding.
+  }
+  LargeNonTrivialFunctor(const LargeNonTrivialFunctor&) {}
+  ~LargeNonTrivialFunctor() {}
+  int operator()(const S*) const { return 0; }
+};
+
+using Function = std::function<int(const S*)>;
+
+TEST_ALWAYS_INLINE
+inline Function MakeFunction(FunctionType type, bool opaque = false) {
+  switch (type) {
+    case FunctionType::Null:
+      return nullptr;
+    case FunctionType::FunctionPointer:
+      return maybeOpaque(FunctionWithS, opaque);
+    case FunctionType::MemberFunctionPointer:
+      return maybeOpaque(&S::function, opaque);
+    case FunctionType::MemberPointer:
+      return maybeOpaque(&S::field, opaque);
+    case FunctionType::SmallTrivialFunctor:
+      return maybeOpaque(SmallTrivialFunctor{}, opaque);
+    case FunctionType::SmallNonTrivialFunctor:
+      return maybeOpaque(SmallNonTrivialFunctor{}, opaque);
+    case FunctionType::LargeTrivialFunctor:
+      return maybeOpaque(LargeTrivialFunctor{}, opaque);
+    case FunctionType::LargeNonTrivialFunctor:
+      return maybeOpaque(LargeNonTrivialFunctor{}, opaque);
+  }
+}
+
+template <class Opacity, class FunctionType>
+struct ConstructAndDestroy {
+  static void run(benchmark::State& state) {
+    for (auto _ : state) {
+      if (Opacity() == ::Opacity::kOpaque) {
+        benchmark::DoNotOptimize(MakeFunction(FunctionType(), true));
+      } else {
+        MakeFunction(FunctionType());
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_ConstructAndDestroy" + FunctionType::name() + Opacity::name();
+  }
+};
+
+template <class FunctionType>
+struct Copy {
+  static void run(benchmark::State& state) {
+    auto value = MakeFunction(FunctionType());
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(value);
+      auto copy = value;  // NOLINT
+      benchmark::DoNotOptimize(copy);
+    }
+  }
+
+  static std::string name() { return "BM_Copy" + FunctionType::name(); }
+};
+
+template <class FunctionType>
+struct Move {
+  static void run(benchmark::State& state) {
+    Function values[2] = {MakeFunction(FunctionType())};
+    int i = 0;
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(values);
+      benchmark::DoNotOptimize(values[i ^ 1] = std::move(values[i]));
+      i ^= 1;
+    }
+  }
+
+  static std::string name() {
+    return "BM_Move" + FunctionType::name();
+  }
+};
+
+template <class Function1, class Function2>
+struct Swap {
+  static void run(benchmark::State& state) {
+    Function values[2] = {MakeFunction(Function1()), MakeFunction(Function2())};
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(values);
+      values[0].swap(values[1]);
+    }
+  }
+
+  static bool skip() { return Function1() > Function2(); }
+
+  static std::string name() {
+    return "BM_Swap" + Function1::name() + Function2::name();
+  }
+};
+
+template <class FunctionType>
+struct OperatorBool {
+  static void run(benchmark::State& state) {
+    auto f = MakeFunction(FunctionType());
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(f);
+      benchmark::DoNotOptimize(static_cast<bool>(f));
+    }
+  }
+
+  static std::string name() { return "BM_OperatorBool" + FunctionType::name(); }
+};
+
+template <class FunctionType>
+struct Invoke {
+  static void run(benchmark::State& state) {
+    S s;
+    const auto value = MakeFunction(FunctionType());
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(value);
+      benchmark::DoNotOptimize(value(&s));
+    }
+  }
+
+  static bool skip() { return FunctionType() == ::FunctionType::Null; }
+
+  static std::string name() { return "BM_Invoke" + FunctionType::name(); }
+};
+
+template <class FunctionType>
+struct InvokeInlined {
+  static void run(benchmark::State& state) {
+    S s;
+    for (auto _ : state) {
+      MakeFunction(FunctionType())(&s);
+    }
+  }
+
+  static bool skip() { return FunctionType() == ::FunctionType::Null; }
+
+  static std::string name() {
+    return "BM_InvokeInlined" + FunctionType::name();
+  }
+};
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  makeCartesianProductBenchmark<ConstructAndDestroy, AllOpacity,
+                                AllFunctionTypes>();
+  makeCartesianProductBenchmark<Copy, AllFunctionTypes>();
+  makeCartesianProductBenchmark<Move, AllFunctionTypes>();
+  makeCartesianProductBenchmark<Swap, AllFunctionTypes, AllFunctionTypes>();
+  makeCartesianProductBenchmark<OperatorBool, AllFunctionTypes>();
+  makeCartesianProductBenchmark<Invoke, AllFunctionTypes>();
+  makeCartesianProductBenchmark<InvokeInlined, AllFunctionTypes>();
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/join_view.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/join_view.bench.cpp
new file mode 100644
index 0000000..c789a39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/join_view.bench.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <deque>
+#include <ranges>
+
+#include "benchmark/benchmark.h"
+
+namespace {
+void run_sizes(auto benchmark) {
+  benchmark->Arg(0)
+      ->Arg(1)
+      ->Arg(2)
+      ->Arg(64)
+      ->Arg(512)
+      ->Arg(1024)
+      ->Arg(4000)
+      ->Arg(4096)
+      ->Arg(5500)
+      ->Arg(64000)
+      ->Arg(65536)
+      ->Arg(70000);
+}
+
+void BM_join_view_in_vectors(benchmark::State& state) {
+  auto size = state.range(0);
+  std::vector<std::vector<int>> input(size, std::vector<int>(32));
+  std::ranges::fill(input | std::views::join, 10);
+  std::vector<int> output;
+  output.resize(size * 32);
+
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(input);
+    benchmark::DoNotOptimize(output);
+    std::ranges::copy(input | std::views::join, output.begin());
+  }
+}
+BENCHMARK(BM_join_view_in_vectors)->Apply(run_sizes);
+
+void BM_join_view_out_vectors(benchmark::State& state) {
+  auto size = state.range(0);
+  std::vector<std::vector<int>> output(size, std::vector<int>(32));
+  std::vector<int> input;
+  input.resize(size * 32);
+  std::ranges::fill(input, 10);
+
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(output);
+    benchmark::DoNotOptimize(input);
+    std::ranges::copy(input, (output | std::views::join).begin());
+  }
+}
+BENCHMARK(BM_join_view_out_vectors)->Apply(run_sizes);
+
+void BM_join_view_deques(benchmark::State& state) {
+  auto size = state.range(0);
+  std::deque<std::deque<int>> deque(size, std::deque<int>(32));
+  std::ranges::fill(deque | std::views::join, 10);
+  std::vector<int> output;
+  output.resize(size * 32);
+
+  for (auto _ : state) {
+    benchmark::DoNotOptimize(deque);
+    benchmark::DoNotOptimize(output);
+    std::ranges::copy(deque | std::views::join, output.begin());
+  }
+}
+BENCHMARK(BM_join_view_deques)->Apply(run_sizes);
+} // namespace
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/lit.cfg.py b/app/src/main/cpp/libcxx/benchmarks/lit.cfg.py
new file mode 100644
index 0000000..84857d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/lit.cfg.py
@@ -0,0 +1,23 @@
+# -*- Python -*- vim: set ft=python ts=4 sw=4 expandtab tw=79:
+# Configuration file for the 'lit' test runner.
+import os
+import site
+
+site.addsitedir(os.path.join(os.path.dirname(os.path.dirname(__file__)), 'utils'))
+from libcxx.test.googlebenchmark import GoogleBenchmark
+
+# Tell pylint that we know config and lit_config exist somewhere.
+if 'PYLINT_IMPORT' in os.environ:
+    config = object()
+    lit_config = object()
+
+# name: The name of this test suite.
+config.name = 'libc++ benchmarks'
+config.suffixes = []
+
+config.test_exec_root = os.path.join(config.libcxx_obj_root, 'benchmarks')
+config.test_source_root = config.test_exec_root
+
+config.test_format = GoogleBenchmark(test_sub_dirs='.',
+                                     test_suffix='.libcxx.out',
+                                     benchmark_args=config.benchmark_args)
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/benchmarks/lit.site.cfg.py.in b/app/src/main/cpp/libcxx/benchmarks/lit.site.cfg.py.in
new file mode 100644
index 0000000..e3ce8b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/lit.site.cfg.py.in
@@ -0,0 +1,10 @@
+@LIT_SITE_CFG_IN_HEADER@
+
+import sys
+
+config.libcxx_src_root = "@LIBCXX_SOURCE_DIR@"
+config.libcxx_obj_root = "@LIBCXX_BINARY_DIR@"
+config.benchmark_args = "@LIBCXX_BENCHMARK_TEST_ARGS@".split(';')
+
+# Let the main config do the real work.
+lit_config.load_config(config, "@LIBCXX_SOURCE_DIR@/benchmarks/lit.cfg.py")
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/benchmarks/map.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/map.bench.cpp
new file mode 100644
index 0000000..dd1884f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/map.bench.cpp
@@ -0,0 +1,1037 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <cstdint>
+#include <map>
+#include <random>
+#include <vector>
+
+#include "CartesianBenchmarks.h"
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+// When VALIDATE is defined the benchmark will run to validate the benchmarks.
+// The time taken by several operations depend on whether or not an element
+// exists. To avoid errors in the benchmark these operations have a validation
+// mode to test the benchmark. Since they are not meant to be benchmarked the
+// number of sizes tested is limited to 1.
+//#define VALIDATE
+
+namespace {
+
+enum class Mode { Hit, Miss };
+
+struct AllModes : EnumValuesAsTuple<AllModes, Mode, 2> {
+  static constexpr const char* Names[] = {"ExistingElement", "NewElement"};
+};
+
+// The positions of the hints to pick:
+// - Begin picks the first item. The item cannot be put before this element.
+// - Thrid picks the third item. This is just an element with a valid entry
+//   before and after it.
+// - Correct contains the correct hint.
+// - End contains a hint to the end of the map.
+enum class Hint { Begin, Third, Correct, End };
+struct AllHints : EnumValuesAsTuple<AllHints, Hint, 4> {
+  static constexpr const char* Names[] = {"Begin", "Third", "Correct", "End"};
+};
+
+enum class Order { Sorted, Random };
+struct AllOrders : EnumValuesAsTuple<AllOrders, Order, 2> {
+  static constexpr const char* Names[] = {"Sorted", "Random"};
+};
+
+struct TestSets {
+  std::vector<uint64_t> Keys;
+  std::vector<std::map<uint64_t, int64_t> > Maps;
+  std::vector<
+      std::vector<typename std::map<uint64_t, int64_t>::const_iterator> >
+      Hints;
+};
+
+enum class Shuffle { None, Keys, Hints };
+
+TestSets makeTestingSets(size_t MapSize, Mode mode, Shuffle shuffle,
+                         size_t max_maps) {
+  /*
+   * The shuffle does not retain the random number generator to use the same
+   * set of random numbers for every iteration.
+   */
+  TestSets R;
+
+  int MapCount = std::min(max_maps, 1000000 / MapSize);
+
+  for (uint64_t I = 0; I < MapSize; ++I) {
+    R.Keys.push_back(mode == Mode::Hit ? 2 * I + 2 : 2 * I + 1);
+  }
+  if (shuffle == Shuffle::Keys)
+    std::shuffle(R.Keys.begin(), R.Keys.end(), std::mt19937());
+
+  for (int M = 0; M < MapCount; ++M) {
+    auto& map = R.Maps.emplace_back();
+    auto& hints = R.Hints.emplace_back();
+    for (uint64_t I = 0; I < MapSize; ++I) {
+      hints.push_back(map.insert(std::make_pair(2 * I + 2, 0)).first);
+    }
+    if (shuffle == Shuffle::Hints)
+      std::shuffle(hints.begin(), hints.end(), std::mt19937());
+  }
+
+  return R;
+}
+
+struct Base {
+  size_t MapSize;
+  Base(size_t T) : MapSize(T) {}
+
+  std::string baseName() const { return "_MapSize=" + std::to_string(MapSize); }
+};
+
+//*******************************************************************|
+//                       Member functions                            |
+//*******************************************************************|
+
+struct ConstructorDefault {
+  void run(benchmark::State& State) const {
+    for (auto _ : State) {
+      benchmark::DoNotOptimize(std::map<uint64_t, int64_t>());
+    }
+  }
+
+  std::string name() const { return "BM_ConstructorDefault"; }
+};
+
+struct ConstructorIterator : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+#ifndef VALIDATE
+      benchmark::DoNotOptimize(
+          std::map<uint64_t, int64_t>(Map.begin(), Map.end()));
+#else
+      std::map<uint64_t, int64_t> M{Map.begin(), Map.end()};
+      if (M != Map)
+        State.SkipWithError("Map copy not identical");
+#endif
+    }
+  }
+
+  std::string name() const { return "BM_ConstructorIterator" + baseName(); }
+};
+
+struct ConstructorCopy : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+#ifndef VALIDATE
+      std::map<uint64_t, int64_t> M(Map);
+      benchmark::DoNotOptimize(M);
+#else
+      std::map<uint64_t, int64_t> M(Map);
+      if (M != Map)
+        State.SkipWithError("Map copy not identical");
+#endif
+    }
+  }
+
+  std::string name() const { return "BM_ConstructorCopy" + baseName(); }
+};
+
+struct ConstructorMove : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        std::map<uint64_t, int64_t> M(std::move(Map));
+        benchmark::DoNotOptimize(M);
+      }
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const { return "BM_ConstructorMove" + baseName(); }
+};
+
+//*******************************************************************|
+//                           Capacity                                |
+//*******************************************************************|
+
+struct Empty : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    for (auto _ : State) {
+#ifndef VALIDATE
+      benchmark::DoNotOptimize(Map.empty());
+#else
+      if (Map.empty())
+        State.SkipWithError("Map contains an invalid number of elements.");
+#endif
+    }
+  }
+
+  std::string name() const { return "BM_Empty" + baseName(); }
+};
+
+struct Size : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    for (auto _ : State) {
+#ifndef VALIDATE
+      benchmark::DoNotOptimize(Map.size());
+#else
+      if (Map.size() != MapSize)
+        State.SkipWithError("Map contains an invalid number of elements.");
+#endif
+    }
+  }
+
+  std::string name() const { return "BM_Size" + baseName(); }
+};
+
+//*******************************************************************|
+//                           Modifiers                               |
+//*******************************************************************|
+
+struct Clear : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        Map.clear();
+        benchmark::DoNotOptimize(Map);
+      }
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const { return "BM_Clear" + baseName(); }
+};
+
+template <class Mode, class Order>
+struct Insert : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.insert(std::make_pair(K, 1)));
+#else
+          bool Inserted = Map.insert(std::make_pair(K, 1)).second;
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted)
+              State.SkipWithError("Inserted a duplicate element");
+          } else {
+            if (!Inserted)
+              State.SkipWithError("Failed to insert e new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(),
+                             Order::value == ::Order::Random ? Shuffle::Keys
+                                                             : Shuffle::None,
+                             1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const {
+    return "BM_Insert" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Hint>
+struct InsertHint : Base {
+  using Base::Base;
+
+  template < ::Hint hint>
+  typename std::enable_if<hint == ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto H = Data.Hints[I].begin();
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.insert(*H, std::make_pair(K, 1)));
+#else
+          auto Inserted = Map.insert(*H, std::make_pair(K, 1));
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted != *H)
+              State.SkipWithError("Inserted a duplicate element");
+          } else {
+            if (++Inserted != *H)
+              State.SkipWithError("Failed to insert a new element");
+          }
+#endif
+          ++H;
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  template < ::Hint hint>
+  typename std::enable_if<hint != ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto Third = *(Data.Hints[I].begin() + 2);
+        for (auto K : Data.Keys) {
+          auto Itor = hint == ::Hint::Begin
+                          ? Map.begin()
+                          : hint == ::Hint::Third ? Third : Map.end();
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.insert(Itor, std::make_pair(K, 1)));
+#else
+          size_t Size = Map.size();
+          Map.insert(Itor, std::make_pair(K, 1));
+          if (Mode() == ::Mode::Hit) {
+            if (Size != Map.size())
+              State.SkipWithError("Inserted a duplicate element");
+          } else {
+            if (Size + 1 != Map.size())
+              State.SkipWithError("Failed to insert a new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  void run(benchmark::State& State) const {
+    static constexpr auto h = Hint();
+    run<h>(State);
+  }
+
+  std::string name() const {
+    return "BM_InsertHint" + baseName() + Mode::name() + Hint::name();
+  }
+};
+
+template <class Mode, class Order>
+struct InsertAssign : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.insert_or_assign(K, 1));
+#else
+          bool Inserted = Map.insert_or_assign(K, 1).second;
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted)
+              State.SkipWithError("Inserted a duplicate element");
+          } else {
+            if (!Inserted)
+              State.SkipWithError("Failed to insert e new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(),
+                             Order::value == ::Order::Random ? Shuffle::Keys
+                                                             : Shuffle::None,
+                             1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const {
+    return "BM_InsertAssign" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Hint>
+struct InsertAssignHint : Base {
+  using Base::Base;
+
+  template < ::Hint hint>
+  typename std::enable_if<hint == ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto H = Data.Hints[I].begin();
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.insert_or_assign(*H, K, 1));
+#else
+          auto Inserted = Map.insert_or_assign(*H, K, 1);
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted != *H)
+              State.SkipWithError("Inserted a duplicate element");
+          } else {
+            if (++Inserted != *H)
+              State.SkipWithError("Failed to insert a new element");
+          }
+#endif
+          ++H;
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  template < ::Hint hint>
+  typename std::enable_if<hint != ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto Third = *(Data.Hints[I].begin() + 2);
+        for (auto K : Data.Keys) {
+          auto Itor = hint == ::Hint::Begin
+                          ? Map.begin()
+                          : hint == ::Hint::Third ? Third : Map.end();
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.insert_or_assign(Itor, K, 1));
+#else
+          size_t Size = Map.size();
+          Map.insert_or_assign(Itor, K, 1);
+          if (Mode() == ::Mode::Hit) {
+            if (Size != Map.size())
+              State.SkipWithError("Inserted a duplicate element");
+          } else {
+            if (Size + 1 != Map.size())
+              State.SkipWithError("Failed to insert a new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  void run(benchmark::State& State) const {
+    static constexpr auto h = Hint();
+    run<h>(State);
+  }
+
+  std::string name() const {
+    return "BM_InsertAssignHint" + baseName() + Mode::name() + Hint::name();
+  }
+};
+
+template <class Mode, class Order>
+struct Emplace : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.emplace(K, 1));
+#else
+          bool Inserted = Map.emplace(K, 1).second;
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted)
+              State.SkipWithError("Emplaced a duplicate element");
+          } else {
+            if (!Inserted)
+              State.SkipWithError("Failed to emplace a new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(),
+                             Order::value == ::Order::Random ? Shuffle::Keys
+                                                             : Shuffle::None,
+                             1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const {
+    return "BM_Emplace" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Hint>
+struct EmplaceHint : Base {
+  using Base::Base;
+
+  template < ::Hint hint>
+  typename std::enable_if<hint == ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto H = Data.Hints[I].begin();
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.emplace_hint(*H, K, 1));
+#else
+          auto Inserted = Map.emplace_hint(*H, K, 1);
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted != *H)
+              State.SkipWithError("Emplaced a duplicate element");
+          } else {
+            if (++Inserted != *H)
+              State.SkipWithError("Failed to emplace a new element");
+          }
+#endif
+          ++H;
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  template < ::Hint hint>
+  typename std::enable_if<hint != ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto Third = *(Data.Hints[I].begin() + 2);
+        for (auto K : Data.Keys) {
+          auto Itor = hint == ::Hint::Begin
+                          ? Map.begin()
+                          : hint == ::Hint::Third ? Third : Map.end();
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.emplace_hint(Itor, K, 1));
+#else
+          size_t Size = Map.size();
+          Map.emplace_hint(Itor, K, 1);
+          if (Mode() == ::Mode::Hit) {
+            if (Size != Map.size())
+              State.SkipWithError("Emplaced a duplicate element");
+          } else {
+            if (Size + 1 != Map.size())
+              State.SkipWithError("Failed to emplace a new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  void run(benchmark::State& State) const {
+    static constexpr auto h = Hint();
+    run<h>(State);
+  }
+
+  std::string name() const {
+    return "BM_EmplaceHint" + baseName() + Mode::name() + Hint::name();
+  }
+};
+
+template <class Mode, class Order>
+struct TryEmplace : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.try_emplace(K, 1));
+#else
+          bool Inserted = Map.try_emplace(K, 1).second;
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted)
+              State.SkipWithError("Emplaced a duplicate element");
+          } else {
+            if (!Inserted)
+              State.SkipWithError("Failed to emplace a new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(),
+                             Order::value == ::Order::Random ? Shuffle::Keys
+                                                             : Shuffle::None,
+                             1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const {
+    return "BM_TryEmplace" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Hint>
+struct TryEmplaceHint : Base {
+  using Base::Base;
+
+  template < ::Hint hint>
+  typename std::enable_if<hint == ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto H = Data.Hints[I].begin();
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.try_emplace(*H, K, 1));
+#else
+          auto Inserted = Map.try_emplace(*H, K, 1);
+          if (Mode() == ::Mode::Hit) {
+            if (Inserted != *H)
+              State.SkipWithError("Emplaced a duplicate element");
+          } else {
+            if (++Inserted != *H)
+              State.SkipWithError("Failed to emplace a new element");
+          }
+#endif
+          ++H;
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  template < ::Hint hint>
+  typename std::enable_if<hint != ::Hint::Correct>::type
+  run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        auto Third = *(Data.Hints[I].begin() + 2);
+        for (auto K : Data.Keys) {
+          auto Itor = hint == ::Hint::Begin
+                          ? Map.begin()
+                          : hint == ::Hint::Third ? Third : Map.end();
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.try_emplace(Itor, K, 1));
+#else
+          size_t Size = Map.size();
+          Map.try_emplace(Itor, K, 1);
+          if (Mode() == ::Mode::Hit) {
+            if (Size != Map.size())
+              State.SkipWithError("Emplaced a duplicate element");
+          } else {
+            if (Size + 1 != Map.size())
+              State.SkipWithError("Failed to emplace a new element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(), Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  void run(benchmark::State& State) const {
+    static constexpr auto h = Hint();
+    run<h>(State);
+  }
+
+  std::string name() const {
+    return "BM_TryEmplaceHint" + baseName() + Mode::name() + Hint::name();
+  }
+};
+
+template <class Mode, class Order>
+struct Erase : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+        for (auto K : Data.Keys) {
+#ifndef VALIDATE
+          benchmark::DoNotOptimize(Map.erase(K));
+#else
+          size_t I = Map.erase(K);
+          if (Mode() == ::Mode::Hit) {
+            if (I == 0)
+              State.SkipWithError("Did not find the existing element");
+          } else {
+            if (I == 1)
+              State.SkipWithError("Did find the non-existing element");
+          }
+#endif
+        }
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode(),
+                             Order::value == ::Order::Random ? Shuffle::Keys
+                                                             : Shuffle::None,
+                             1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const {
+    return "BM_Erase" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Order>
+struct EraseIterator : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode::Hit,
+        Order::value == ::Order::Random ? Shuffle::Hints : Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (size_t I = 0; I < Data.Maps.size(); ++I) {
+        auto& Map = Data.Maps[I];
+        for (auto H : Data.Hints[I]) {
+          benchmark::DoNotOptimize(Map.erase(H));
+        }
+#ifdef VALIDATE
+        if (!Map.empty())
+          State.SkipWithError("Did not erase the entire map");
+#endif
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode::Hit,
+                             Order::value == ::Order::Random ? Shuffle::Hints
+                                                             : Shuffle::None,
+                             1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const {
+    return "BM_EraseIterator" + baseName() + Order::name();
+  }
+};
+
+struct EraseRange : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1000);
+    while (State.KeepRunningBatch(MapSize * Data.Maps.size())) {
+      for (auto& Map : Data.Maps) {
+#ifndef VALIDATE
+        benchmark::DoNotOptimize(Map.erase(Map.begin(), Map.end()));
+#else
+        Map.erase(Map.begin(), Map.end());
+        if (!Map.empty())
+          State.SkipWithError("Did not erase the entire map");
+#endif
+      }
+
+      State.PauseTiming();
+      Data = makeTestingSets(MapSize, Mode::Hit, Shuffle::None, 1000);
+      State.ResumeTiming();
+    }
+  }
+
+  std::string name() const { return "BM_EraseRange" + baseName(); }
+};
+
+//*******************************************************************|
+//                            Lookup                                 |
+//*******************************************************************|
+
+template <class Mode, class Order>
+struct Count : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+      for (auto K : Data.Keys) {
+#ifndef VALIDATE
+        benchmark::DoNotOptimize(Map.count(K));
+#else
+        size_t I = Map.count(K);
+        if (Mode() == ::Mode::Hit) {
+          if (I == 0)
+            State.SkipWithError("Did not find the existing element");
+        } else {
+          if (I == 1)
+            State.SkipWithError("Did find the non-existing element");
+        }
+#endif
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_Count" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Order>
+struct Find : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+      for (auto K : Data.Keys) {
+#ifndef VALIDATE
+        benchmark::DoNotOptimize(Map.find(K));
+#else
+        auto Itor = Map.find(K);
+        if (Mode() == ::Mode::Hit) {
+          if (Itor == Map.end())
+            State.SkipWithError("Did not find the existing element");
+        } else {
+          if (Itor != Map.end())
+            State.SkipWithError("Did find the non-existing element");
+        }
+#endif
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_Find" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Order>
+struct EqualRange : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+      for (auto K : Data.Keys) {
+#ifndef VALIDATE
+        benchmark::DoNotOptimize(Map.equal_range(K));
+#else
+        auto Range = Map.equal_range(K);
+        if (Mode() == ::Mode::Hit) {
+          // Adjust validation for the last element.
+          auto Key = K;
+          if (Range.second == Map.end() && K == 2 * MapSize) {
+            --Range.second;
+            Key -= 2;
+          }
+          if (Range.first == Map.end() || Range.first->first != K ||
+              Range.second == Map.end() || Range.second->first - 2 != Key)
+            State.SkipWithError("Did not find the existing element");
+        } else {
+          if (Range.first == Map.end() || Range.first->first - 1 != K ||
+              Range.second == Map.end() || Range.second->first - 1 != K)
+            State.SkipWithError("Did find the non-existing element");
+        }
+#endif
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_EqualRange" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Order>
+struct LowerBound : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+      for (auto K : Data.Keys) {
+#ifndef VALIDATE
+        benchmark::DoNotOptimize(Map.lower_bound(K));
+#else
+        auto Itor = Map.lower_bound(K);
+        if (Mode() == ::Mode::Hit) {
+          if (Itor == Map.end() || Itor->first != K)
+            State.SkipWithError("Did not find the existing element");
+        } else {
+          if (Itor == Map.end() || Itor->first - 1 != K)
+            State.SkipWithError("Did find the non-existing element");
+        }
+#endif
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_LowerBound" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+template <class Mode, class Order>
+struct UpperBound : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(
+        MapSize, Mode(),
+        Order::value == ::Order::Random ? Shuffle::Keys : Shuffle::None, 1);
+    auto& Map = Data.Maps.front();
+    while (State.KeepRunningBatch(MapSize)) {
+      for (auto K : Data.Keys) {
+#ifndef VALIDATE
+        benchmark::DoNotOptimize(Map.upper_bound(K));
+#else
+        std::map<uint64_t, int64_t>::iterator Itor = Map.upper_bound(K);
+        if (Mode() == ::Mode::Hit) {
+          // Adjust validation for the last element.
+          auto Key = K;
+          if (Itor == Map.end() && K == 2 * MapSize) {
+            --Itor;
+            Key -= 2;
+          }
+          if (Itor == Map.end() || Itor->first - 2 != Key)
+            State.SkipWithError("Did not find the existing element");
+        } else {
+          if (Itor == Map.end() || Itor->first - 1 != K)
+            State.SkipWithError("Did find the non-existing element");
+        }
+#endif
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_UpperBound" + baseName() + Mode::name() + Order::name();
+  }
+};
+
+} // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+#ifdef VALIDATE
+  const std::vector<size_t> MapSize{10};
+#else
+  const std::vector<size_t> MapSize{10, 100, 1000, 10000, 100000, 1000000};
+#endif
+
+  // Member functions
+  makeCartesianProductBenchmark<ConstructorDefault>();
+  makeCartesianProductBenchmark<ConstructorIterator>(MapSize);
+  makeCartesianProductBenchmark<ConstructorCopy>(MapSize);
+  makeCartesianProductBenchmark<ConstructorMove>(MapSize);
+
+  // Capacity
+  makeCartesianProductBenchmark<Empty>(MapSize);
+  makeCartesianProductBenchmark<Size>(MapSize);
+
+  // Modifiers
+  makeCartesianProductBenchmark<Clear>(MapSize);
+  makeCartesianProductBenchmark<Insert, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<InsertHint, AllModes, AllHints>(MapSize);
+  makeCartesianProductBenchmark<InsertAssign, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<InsertAssignHint, AllModes, AllHints>(MapSize);
+
+  makeCartesianProductBenchmark<Emplace, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<EmplaceHint, AllModes, AllHints>(MapSize);
+  makeCartesianProductBenchmark<TryEmplace, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<TryEmplaceHint, AllModes, AllHints>(MapSize);
+  makeCartesianProductBenchmark<Erase, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<EraseIterator, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<EraseRange>(MapSize);
+
+  // Lookup
+  makeCartesianProductBenchmark<Count, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<Find, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<EqualRange, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<LowerBound, AllModes, AllOrders>(MapSize);
+  makeCartesianProductBenchmark<UpperBound, AllModes, AllOrders>(MapSize);
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/monotonic_buffer.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/monotonic_buffer.bench.cpp
new file mode 100644
index 0000000..cfedbe5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/monotonic_buffer.bench.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <list>
+#include <memory_resource>
+
+#include "benchmark/benchmark.h"
+
+static void bm_list(benchmark::State& state) {
+  char buffer[16384];
+  std::pmr::monotonic_buffer_resource resource(buffer, sizeof(buffer));
+  for (auto _ : state) {
+    std::pmr::list<int> l(&resource);
+    for (size_t i = 0; i != state.range(); ++i) {
+      l.push_back(1);
+      benchmark::DoNotOptimize(l);
+    }
+    resource.release();
+  }
+}
+BENCHMARK(bm_list)->Range(1, 2048);
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/ordered_set.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/ordered_set.bench.cpp
new file mode 100644
index 0000000..a9d9c92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/ordered_set.bench.cpp
@@ -0,0 +1,248 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <cstdint>
+#include <memory>
+#include <random>
+#include <set>
+#include <string>
+#include <vector>
+
+#include "CartesianBenchmarks.h"
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+namespace {
+
+enum class HitType { Hit, Miss };
+
+struct AllHitTypes : EnumValuesAsTuple<AllHitTypes, HitType, 2> {
+  static constexpr const char* Names[] = {"Hit", "Miss"};
+};
+
+enum class AccessPattern { Ordered, Random };
+
+struct AllAccessPattern
+    : EnumValuesAsTuple<AllAccessPattern, AccessPattern, 2> {
+  static constexpr const char* Names[] = {"Ordered", "Random"};
+};
+
+void sortKeysBy(std::vector<uint64_t>& Keys, AccessPattern AP) {
+  if (AP == AccessPattern::Random) {
+    std::random_device R;
+    std::mt19937 M(R());
+    std::shuffle(std::begin(Keys), std::end(Keys), M);
+  }
+}
+
+struct TestSets {
+  std::vector<std::set<uint64_t> > Sets;
+  std::vector<uint64_t> Keys;
+};
+
+TestSets makeTestingSets(size_t TableSize, size_t NumTables, HitType Hit,
+                         AccessPattern Access) {
+  TestSets R;
+  R.Sets.resize(1);
+
+  for (uint64_t I = 0; I < TableSize; ++I) {
+    R.Sets[0].insert(2 * I);
+    R.Keys.push_back(Hit == HitType::Hit ? 2 * I : 2 * I + 1);
+  }
+  R.Sets.resize(NumTables, R.Sets[0]);
+  sortKeysBy(R.Keys, Access);
+
+  return R;
+}
+
+struct Base {
+  size_t TableSize;
+  size_t NumTables;
+  Base(size_t T, size_t N) : TableSize(T), NumTables(N) {}
+
+  bool skip() const {
+    size_t Total = TableSize * NumTables;
+    return Total < 100 || Total > 1000000;
+  }
+
+  std::string baseName() const {
+    return "_TableSize" + std::to_string(TableSize) + "_NumTables" +
+           std::to_string(NumTables);
+  }
+};
+
+template <class Access>
+struct Create : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    std::vector<uint64_t> Keys(TableSize);
+    std::iota(Keys.begin(), Keys.end(), uint64_t{0});
+    sortKeysBy(Keys, Access());
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      std::vector<std::set<uint64_t>> Sets(NumTables);
+      for (auto K : Keys) {
+        for (auto& Set : Sets) {
+          benchmark::DoNotOptimize(Set.insert(K));
+        }
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_Create" + Access::name() + baseName();
+  }
+};
+
+template <class Hit, class Access>
+struct Find : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(TableSize, NumTables, Hit(), Access());
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      for (auto K : Data.Keys) {
+        for (auto& Set : Data.Sets) {
+          benchmark::DoNotOptimize(Set.find(K));
+        }
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_Find" + Hit::name() + Access::name() + baseName();
+  }
+};
+
+template <class Hit, class Access>
+struct FindNeEnd : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(TableSize, NumTables, Hit(), Access());
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      for (auto K : Data.Keys) {
+        for (auto& Set : Data.Sets) {
+          benchmark::DoNotOptimize(Set.find(K) != Set.end());
+        }
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_FindNeEnd" + Hit::name() + Access::name() + baseName();
+  }
+};
+
+template <class Access>
+struct InsertHit : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(TableSize, NumTables, HitType::Hit, Access());
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      for (auto K : Data.Keys) {
+        for (auto& Set : Data.Sets) {
+          benchmark::DoNotOptimize(Set.insert(K));
+        }
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_InsertHit" + Access::name() + baseName();
+  }
+};
+
+template <class Access>
+struct InsertMissAndErase : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(TableSize, NumTables, HitType::Miss, Access());
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      for (auto K : Data.Keys) {
+        for (auto& Set : Data.Sets) {
+          benchmark::DoNotOptimize(Set.erase(Set.insert(K).first));
+        }
+      }
+    }
+  }
+
+  std::string name() const {
+    return "BM_InsertMissAndErase" + Access::name() + baseName();
+  }
+};
+
+struct IterateRangeFor : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(TableSize, NumTables, HitType::Miss,
+                                AccessPattern::Ordered);
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      for (auto& Set : Data.Sets) {
+        for (auto& V : Set) {
+          benchmark::DoNotOptimize(V);
+        }
+      }
+    }
+  }
+
+  std::string name() const { return "BM_IterateRangeFor" + baseName(); }
+};
+
+struct IterateBeginEnd : Base {
+  using Base::Base;
+
+  void run(benchmark::State& State) const {
+    auto Data = makeTestingSets(TableSize, NumTables, HitType::Miss,
+                                AccessPattern::Ordered);
+
+    while (State.KeepRunningBatch(TableSize * NumTables)) {
+      for (auto& Set : Data.Sets) {
+        for (auto it = Set.begin(); it != Set.end(); ++it) {
+          benchmark::DoNotOptimize(*it);
+        }
+      }
+    }
+  }
+
+  std::string name() const { return "BM_IterateBeginEnd" + baseName(); }
+};
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  const std::vector<size_t> TableSize{1, 10, 100, 1000, 10000, 100000, 1000000};
+  const std::vector<size_t> NumTables{1, 10, 100, 1000, 10000, 100000, 1000000};
+
+  makeCartesianProductBenchmark<Create, AllAccessPattern>(TableSize, NumTables);
+  makeCartesianProductBenchmark<Find, AllHitTypes, AllAccessPattern>(
+      TableSize, NumTables);
+  makeCartesianProductBenchmark<FindNeEnd, AllHitTypes, AllAccessPattern>(
+      TableSize, NumTables);
+  makeCartesianProductBenchmark<InsertHit, AllAccessPattern>(
+      TableSize, NumTables);
+  makeCartesianProductBenchmark<InsertMissAndErase, AllAccessPattern>(
+      TableSize, NumTables);
+  makeCartesianProductBenchmark<IterateRangeFor>(TableSize, NumTables);
+  makeCartesianProductBenchmark<IterateBeginEnd>(TableSize, NumTables);
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/random.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/random.bench.cpp
new file mode 100644
index 0000000..e437849
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/random.bench.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <array>
+#include <cstddef>
+#include <functional>
+#include <random>
+
+#include "benchmark/benchmark.h"
+
+constexpr std::size_t MAX_BUFFER_LEN = 256;
+constexpr std::size_t MAX_SEED_LEN = 16;
+
+static void BM_SeedSeq_Generate(benchmark::State& state) {
+  std::array<std::uint32_t, MAX_BUFFER_LEN> buffer;
+  std::array<std::uint32_t, MAX_SEED_LEN> seeds;
+  {
+    std::random_device rd;
+    std::generate(std::begin(seeds), std::begin(seeds) + state.range(0), [&]() { return rd(); });
+  }
+  std::seed_seq seed(std::begin(seeds), std::begin(seeds) + state.range(0));
+  for (auto _ : state) {
+    seed.generate(std::begin(buffer), std::begin(buffer) + state.range(1));
+  }
+}
+BENCHMARK(BM_SeedSeq_Generate)->Ranges({{1, MAX_SEED_LEN}, {1, MAX_BUFFER_LEN}});
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/std_format_spec_string_unicode.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/std_format_spec_string_unicode.bench.cpp
new file mode 100644
index 0000000..3769e96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/std_format_spec_string_unicode.bench.cpp
@@ -0,0 +1,300 @@
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_HAS_NO_UNICODE
+
+#  include <format>
+#  include <string_view>
+
+#  include "benchmark/benchmark.h"
+
+#  include "make_string.h"
+
+#  define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+// generated with https://generator.lorem-ipsum.info/_latin
+
+template <class CharT>
+std::basic_string_view<CharT> ascii_text() {
+  return SV(
+      R"( Lorem ipsum dolor sit amet, ne sensibus evertitur aliquando his.
+Iuvaret fabulas qui ex, ex iriure iisque nostrum mea. Solum
+pericula qui ad. Elitr oporteat ius ad.
+
+Quas rationibus ad mel. Appellantur intellegebat ad mei, ius audire volumus
+consectetuer id. Ei sit definitionem mediocritatem, vim indoctum intellegat id,
+dicta laboramus instructior in vix. Mel an quando malorum, id vis mollis
+invidunt, placerat maiestatis comprehensam ut cum. Suas regione interesset id
+per, et docendi accumsan has, autem atomorum est te.
+
+Cu debitis ancillae sea, alii definitiones ex cum, vim no erat antiopam. Eam et
+unum quas scriptorem. An bonorum elaboraret complectitur nam, vim ei persecuti
+democritum mediocritatem. Suscipit platonem signiferumque ei cum, in sale
+volutpat ocurreret vel. Te vel nihil nominavi adipiscing, stet ancillae mel ea.
+Sit detraxit menandri platonem ea, cum at tale viris virtute.
+
+Regione detraxit gloriatur sit eu, sonet labitur sententiae et pro, at sit
+alterum aliquid interpretaris. Sonet voluptua duo id, vix ea accumsan
+liberavisse. Nam id commune probatus contentiones. Et zril dolore laudem duo,
+ea usu mollis melius referrentur, vel ex case consequuntur. Id nam illum mollis
+ponderum. Quis tamquam ullamcorper sed ne, legimus vituperatoribus est id.
+
+Et eum probo consulatu. At eos errem aliquando theophrastus, sea ad eius omnis.
+No vis iusto scriptorem adversarium, dicat viderer ea sit. Et veri euripidis
+sea, justo putent iudicabit vim id. Sea suas tincidunt vituperatoribus in. Ne
+eam aeterno sensibus concludaturque, solet legere his id, usu ei dicat
+dissentiunt. Est et autem erant.
+
+Per quod laboramus an. Dico voluptua at mea, an animal minimum eum. Pri an
+option salutatus, causae feugiat menandri an sed. Voluptaria dissentiet vix ut,
+alii solet te quo, in facer ceteros eos. Ad nibh meis percipitur sit,
+aliquam molestie cu vis, iisque malorum interesset et eos.
+
+Eos in feugiat insolens abhorreant. Ea tale esse alienum has, mel et saperet
+appellantur, aliquip salutandi deterruisset ut mel. Eos ei quod simul
+interpretaris, aeque elitr putent per at, et veri eripuit ceteros his. Cu pro
+meis aperiam volutpat, ex alterum scripserit ius, scriptorem deterruisset eu
+qui. Graeco debitis lobortis cu mea.
+
+Alii corpora id ius, cu quo oblique eloquentiam. Et duis civibus atomorum sea,
+veniam utroque scriptorem vim cu. Ut oratio eruditi mediocritatem est. Amet
+nibh dolore mea ea, tollit laoreet eligendi qui ex, cu essent forensibus
+his.
+
+Usu ex ipsum apeirian, eos congue scripserit omittantur et. Ea eum persecuti
+deseruisse, probatus torquatos est no, in has mutat mundi dolorem. Albucius
+sensibus ex cum. Ferri virtute referrentur an per, est choro option bonorum ex.
+
+Quando accusam vis te, tale mazim et pro. Magna dolorem tincidunt
+nec te, albucius adipisci ad pri. Magna facilisi adipisci at usu, et vel
+dissentiunt neglegentur, prima audiam vocibus an duo. Enim detracto te sea, mel
+quis dicit gubergren ex, iusto adversarium consequuntur per ne.
+
+)");
+}
+
+template <class CharT>
+std::basic_string_view<CharT> unicode_text() {
+  return SV(
+      R"(Lōrem ipsūm dolor sīt æmeÞ, ea vel nostrud feuġǣit, muciūs tēmporiȝus
+refērrēnÞur no mel, quo placērǽt consecÞetuer cū. Veri soƿet euripīðis id has,
+sumo paulō dissentias duo eī, dētrāxīt neglēgeƿtur ið prī. Sēd option oporÞerē
+no. Nec ēū nēmore mentitum. Veri prōȝo faċilis āt vīm.
+
+Ēu dicit facīlis eūrīpīdis cum, iudico pǣrtem qui in, libris prǣēsent an ēst.
+Æt sit quoðsi impētus, nec ex qūaeque honestǣtīs. Fiērēƿt ƿōluisse verterem iƿ
+ēst. Meī eæ apēriæm fierent peÞentīūm. Eæm officiīs reprehēndunt nē.
+
+Ut vel quodsī contentioƿes, his eū dignissim īnstruċÞior. Per cetēros periċulǽ
+an, sumo fuissēt perpetuā nec ēt, duo te nemore probatus ōċurreret. Mel ǣd
+civībus ocūrreret. Ex nostro ǣliquam usu, ex Þātīon adipiscī qui. Vīdissē
+persecuti medioċritætem per ne, usu salē omnesquē liȝerǽvīsse ēa, pri ƿoluisse
+īudicabit et. No summo quiðǣm nec, vim ēi nūmqūam sænctus concepÞǣm. Reque
+doceƿdi īn īus, porro eripuiÞ intērprētaris pri in.
+
+Idquē hǣbēmus nominati vix cū. AÞ prō ǽmēt elit periculæ. Has virīs viderer ān.
+Mel in suās pericūlīs āppellantur, nonumes deserūƿt ǽðversarium eā has. ĒliÞ
+possīt commuƿe no ēsÞ, niȝh aċcusāmūs volūpÞatum no mel, ut quō ciȝo ðiceret.
+Inǣni scripta quālīsque nē qūi, ad ipsūm persecuÞi mediōcritæÞēm vel.
+
+Ǣppetere definitiōnes mel id. Leġerē āliquip nam eǣ, rēgione viderer pǣtrioque
+duo te, meƿāƿdri prodēsseÞ ex hīs. Solum quidam eæ iūs, mēl ǣt sapientem
+expliċari. Īƿ ǣċcusǣm phǽedrum pro, ex pro dēleƿit detræxit hendrerīt, sit āgam
+quidām pertinax uÞ. Ēssent rætionibus eǽ vēl, quo ān labore nusquæm nominǣti.
+
+Te alii cōnseÞetur ƿam, eam ēt puteƿÞ ðissentiæs. Qūi alii dicānt repuðiære ēā,
+nō mel ferri nūsquam. Ea vim impedīt vertērem, ǣn per veri Þīmeam. SiÞ ōmitÞǽm
+necēssitǣÞibus ex, ƿe vis inǣni pærtem invenire. Īd ðolores ċonsēċÞeÞuer usu,
+īd vis nisl dēnique luptǣtūm. Pro ǽd ēverti option dēserūƿt, nec te ōðiō
+cīvībūs.
+
+Ēæ nibh æccommodarē eum. Ne etiæm īudico dicunt duo, quo tēmpor populo insōlens
+nē. Ēos eÞ ēirmod prǽēsēƿt. Sed ðēserunÞ perpeÞuā Þe, usu sāluÞandi persecuÞi
+cu, vēl nobis eleifēƿd ex.
+
+Ƿe zrīl ūtīnam lǣtīne eǣm, eā vim rebum omitÞǣm aðipisciƿg. Amet inermis
+epiċūri ut est, eu duo hīnc periċulis. Mel no reque simul volupÞātum, ex mutat
+lāudem tacīmatēs cum. Te hǣs summo iƿteġre recteque. No iūs dicerēt
+ðisputǽtioƿi. Vim ōmnis deleƿiÞi honestātis ēǽ.
+
+Nec detrǣcto pērcipitur ne. Ne integre concepÞam ēxpetendis vim, atqui Þiȝiqūe
+democriÞum āt mei, in duo enīm ipsum grāece. Rebum ðefīnīÞionem āt pri, ēt sit
+brute periculis. Ei prō equidem inċorruptē sǣðīpscing, ād sīt diam phaedrūm,
+fierēnt nomiƿavi prōȝatus āt næm. Wisi ƿæÞūm coƿsecteÞuer usū ea.
+)");
+}
+
+template <class CharT>
+std::basic_string_view<CharT> cyrillic_text() {
+  return SV(
+      R"(Лорем ипсум долор сит амет, еу диам тамяуам принципес вис, еяуидем
+цонцептам диспутандо яуи цу, иус ад натум нулла граеци. Цибо дицит омниум нец
+цу, еу бруте номинави диссентиет яуо. Омниум лаборамус еу хас. Дицат
+диспутатиони вис еу, цу еос миним атоморум инцидеринт. Пер хабео рецтеяуе
+дигниссим ан, ех яуо сенсибус торяуатос, ан.
+
+Ут перпетуа партиендо принципес хис. Ат симул ностер аппареат пер. Пурто вирис
+ет хис, мазим дицерет при ет. Хис саперет тибияуе сцаевола еу, сит солет
+вивендум цонсеяуат те. Ид оффициис перпетуа ассентиор яуи, сед аугуе афферт
+симилияуе ад, ех адмодум постулант иус.
+
+Про дицунт волуптатум диспутатиони ат. Вел патриояуе персецути еа, цетерос
+диспутатиони ин сед, нам те веро цлита малуиссет. Цу неглегентур инструцтиор
+интерпретарис еам, ипсум фабулас еи вел. Еи адхуц деленити нам, аугуе
+демоцритум при ан. Вим мелиоре проприае ид, албуциус волуптуа цоррумпит дуо ан.
+Латине иуварет пер ут, иус еа мунере ерипуит санцтус.
+
+Модус тритани иус не, вим ут мелиоре мандамус, лабитур опортере дуо но. Ад нец
+витае фацилис инцоррупте, цу сед толлит сцрипторем. Сит лудус инимицус
+волуптариа не. Иисяуе антиопам сапиентем сед еу. Путент волуптуа сит ех, ат иус
+ребум епицури, яуи моллис елигенди ех. Проприае нолуиссе цу сеа, путент поссит
+адверсариум про не.
+
+Ид яуо прима бонорум, дуо форенсибус яуаерендум еи, еум бруте мунере те. Еам
+риденс граецо ех, аеяуе санцтус маиорум ан вел. Либрис санцтус утрояуе ест но,
+еам ат реяуе порро тинцидунт, ут хинц иллуд патриояуе хис. Не солет оффендит
+форенсибус хас, тамяуам опортеат елаборарет те нец, еу аугуе примис маиорум
+еам. Аутем вениам импедит вис ин, прима елитр пхаедрум ест еу.)");
+}
+
+template <class CharT>
+std::basic_string_view<CharT> japanese_text() {
+  return SV(
+      R"(入ト年媛ろ舗学ラロ準募ケカ社金スノ屋検れう策他セヲシ引口ぎ集7独ぱクふ出車ぽでぱ円輪ルノ受打わ。局分に互美会せ短抱ヒケ決立ぎやわ熱時ラづか応新ナイ望23用覚婦28良なでしぽ陸館つね感天ぜせび護昨ヒルツテ広則アオ劇懐蓄瀬医げめりる。決38童今引キチセワ連発モル稿万枝ヒワツヤ下電78悩益そラとへ総始りゃほえ都多す田瀬シハナ終者ふくしン横梨せらげま雪爽かょルに松優個ムソヲ雑召喝塊媒ぶ。
+
+紙ヤ景異ミノオ誤求レ移著ヤエヨメ広庫テハヌサ君検あ必参ワ火面るね声著ン間売力を数20談すがス禁化ッを。起そり予浩ド進皇キ試属が震二トヌ真佳速すずちし件諏フウチ聞在ス会雄ノミ必筋80戦ぶさほド聞2涙属どスれ映聞ネ掲実べ。
+
+8福びり属稿づ徳鎌ニル涼問ゃごるリ付92済トぎけッ康30業づむはつ治然二生入ざひ有動ハワチ発談ニスツ魚困摘策送ざ。個時着そてら新新ヌ鉄報たは作主ずリ可輸改量ルおず井認つてぜな会大ぼすぶし全戸ノハケレ貯治たざリな祖間ムリキ断会仕べせど。委暮ど象週トクワ流開タハ硬給ツタウ者善マラノヱ断稿リヲ東毎ツヨマ井藤ルょへ境同論エ愛図ッらフリ基38属慣葬8携ヱ校図おに岐題しね要月レユ展省わトど。
+
+担がは顔研リ目問いぽべ挙介ん入番ネヌイ栄県し改治ラス健第モム得続加ホウ嘉宿置首本やぞ。78毎まが現設記ほぜね場歩ユアルヒ東的ヒ姿役ネヲ聞能ラシマヒ際形トくゃ政能万の付結ス国1教レツ引写イど扱澤は膚言けリいべ橋柔薄組こよじ。浩報すンつひ崎正念方と夫地クざす情阪スで抜長ネ娘回ハツ止資ヘニ並辞ロノ展師質18打テネ岡時ノモ泉95務えぴひつ速申後延んフるせ。
+
+店てラ載独マシフ理心ス型部米た読石カ料応掲ケカキ打月在ユテニ採材イ並発イヒト旅錯っめし模能りせば連確え会准揮が。器にト画軍にぶイら式東みそお前姿リいけに身47却6記け岸5体会ゃばま映8碁よぽだ経9名トびち更躍うにふ裏高もそ提旅さぼえス。賞ぞだ月係ソ知建振イナシ説並イ見書傳ヨミ問回級エシ出所師阪ト転権がし渡平ルモケ新完ハ玲女ロトシ導複トうよふ。
+
+化シセチ町74掲ネテトオ連対ヒハチモ経後ッ断連カロワ待業ぼぽねか百都へがい始塗ごげ寺帰んぽ逆力るず選英堂衛掛焼ゅ。自生トサリ探就的らね江球リルスツ主嘆4権伝ざが避掲う慶合ワ百29暮ネヤクム書能部あが席小フア部親票ーむとこ。3説ひっぜ約毎伎ナキリ缶近くなず員45姿えにけろ値付ワ着知ソルキ日医ず集新エウカケ投国チ生目ゃ棋運ぐのか寄募オチ性注経どドんて止代わくかな端期幕はかク。
+)");
+}
+
+template <class CharT>
+std::basic_string_view<CharT> emoji_text() {
+  return SV(
+      R"(
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+\U0001F636\u200D\U0001F32B\uFE0F
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+
+\U0001F636\u200D\U0001F32B\uFE0F
+
+\U0001F44B\U0001F3FB\U0001F44B\U0001F3FC\U0001F44B\U0001F3FD\U0001F44B\U0001F3FE\U0001F44B\U0001F3FF
+
+\U0001F468\u200D\U0001F469\u200D\U0001F467\u200D\U0001F466\U0001F1E8\U0001F1E6
+
+\U0001F984
+
+)");
+}
+
+template <class CharT>
+void BM_text(benchmark::State& state, std::basic_string_view<CharT> input) {
+  CharT buffer[5'000];
+
+  if constexpr (std::same_as<CharT, char>) {
+    // Make sure the output buffer is large enough.
+    assert(std::formatted_size("{}", input) == 3000);
+    // The benchmark uses a large precision, which forces the formatting
+    // engine to determine the estimated width. (There's no direct way to call
+    // this function in portable code.)
+    for (auto _ : state)
+      benchmark::DoNotOptimize(std::format_to(buffer, "{:.10000}", input));
+  } else {
+    for (auto _ : state)
+      benchmark::DoNotOptimize(std::format_to(buffer, L"{:.10000}", input));
+  }
+}
+
+template <class CharT>
+void BM_ascii_text(benchmark::State& state) {
+  BM_text(state, ascii_text<CharT>());
+}
+
+template <class CharT>
+void BM_unicode_text(benchmark::State& state) {
+  BM_text(state, unicode_text<CharT>());
+}
+
+template <class CharT>
+void BM_cyrillic_text(benchmark::State& state) {
+  BM_text(state, cyrillic_text<CharT>());
+}
+
+template <class CharT>
+void BM_japanese_text(benchmark::State& state) {
+  BM_text(state, japanese_text<CharT>());
+}
+
+template <class CharT>
+void BM_emoji_text(benchmark::State& state) {
+  BM_text(state, emoji_text<CharT>());
+}
+
+BENCHMARK_TEMPLATE(BM_ascii_text, char);
+BENCHMARK_TEMPLATE(BM_unicode_text, char);
+BENCHMARK_TEMPLATE(BM_cyrillic_text, char);
+BENCHMARK_TEMPLATE(BM_japanese_text, char);
+BENCHMARK_TEMPLATE(BM_emoji_text, char);
+
+BENCHMARK_TEMPLATE(BM_ascii_text, wchar_t);
+BENCHMARK_TEMPLATE(BM_unicode_text, wchar_t);
+BENCHMARK_TEMPLATE(BM_cyrillic_text, wchar_t);
+BENCHMARK_TEMPLATE(BM_japanese_text, wchar_t);
+BENCHMARK_TEMPLATE(BM_emoji_text, wchar_t);
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  benchmark::RunSpecifiedBenchmarks();
+}
+#else
+int main(int, char**) { return 0; }
+#endif
diff --git a/app/src/main/cpp/libcxx/benchmarks/string.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/string.bench.cpp
new file mode 100644
index 0000000..e43ad32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/string.bench.cpp
@@ -0,0 +1,628 @@
+
+#include <cstdint>
+#include <new>
+#include <vector>
+
+#include "CartesianBenchmarks.h"
+#include "GenerateInput.h"
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+constexpr std::size_t MAX_STRING_LEN = 8 << 14;
+
+// Benchmark when there is no match.
+static void BM_StringFindNoMatch(benchmark::State &state) {
+  std::string s1(state.range(0), '-');
+  std::string s2(8, '*');
+  for (auto _ : state)
+    benchmark::DoNotOptimize(s1.find(s2));
+}
+BENCHMARK(BM_StringFindNoMatch)->Range(10, MAX_STRING_LEN);
+
+// Benchmark when the string matches first time.
+static void BM_StringFindAllMatch(benchmark::State &state) {
+  std::string s1(MAX_STRING_LEN, '-');
+  std::string s2(state.range(0), '-');
+  for (auto _ : state)
+    benchmark::DoNotOptimize(s1.find(s2));
+}
+BENCHMARK(BM_StringFindAllMatch)->Range(1, MAX_STRING_LEN);
+
+// Benchmark when the string matches somewhere in the end.
+static void BM_StringFindMatch1(benchmark::State &state) {
+  std::string s1(MAX_STRING_LEN / 2, '*');
+  s1 += std::string(state.range(0), '-');
+  std::string s2(state.range(0), '-');
+  for (auto _ : state)
+    benchmark::DoNotOptimize(s1.find(s2));
+}
+BENCHMARK(BM_StringFindMatch1)->Range(1, MAX_STRING_LEN / 4);
+
+// Benchmark when the string matches somewhere from middle to the end.
+static void BM_StringFindMatch2(benchmark::State &state) {
+  std::string s1(MAX_STRING_LEN / 2, '*');
+  s1 += std::string(state.range(0), '-');
+  s1 += std::string(state.range(0), '*');
+  std::string s2(state.range(0), '-');
+  for (auto _ : state)
+    benchmark::DoNotOptimize(s1.find(s2));
+}
+BENCHMARK(BM_StringFindMatch2)->Range(1, MAX_STRING_LEN / 4);
+
+static void BM_StringCtorDefault(benchmark::State &state) {
+  for (auto _ : state) {
+    std::string Default;
+    benchmark::DoNotOptimize(Default);
+  }
+}
+BENCHMARK(BM_StringCtorDefault);
+
+enum class Length { Empty, Small, Large, Huge };
+struct AllLengths : EnumValuesAsTuple<AllLengths, Length, 4> {
+  static constexpr const char* Names[] = {"Empty", "Small", "Large", "Huge"};
+};
+
+enum class Opacity { Opaque, Transparent };
+struct AllOpacity : EnumValuesAsTuple<AllOpacity, Opacity, 2> {
+  static constexpr const char* Names[] = {"Opaque", "Transparent"};
+};
+
+enum class DiffType { Control, ChangeFirst, ChangeMiddle, ChangeLast };
+struct AllDiffTypes : EnumValuesAsTuple<AllDiffTypes, DiffType, 4> {
+  static constexpr const char* Names[] = {"Control", "ChangeFirst",
+                                          "ChangeMiddle", "ChangeLast"};
+};
+
+static constexpr char SmallStringLiteral[] = "012345678";
+
+TEST_ALWAYS_INLINE const char* getSmallString(DiffType D) {
+  switch (D) {
+    case DiffType::Control:
+      return SmallStringLiteral;
+    case DiffType::ChangeFirst:
+      return "-12345678";
+    case DiffType::ChangeMiddle:
+      return "0123-5678";
+    case DiffType::ChangeLast:
+      return "01234567-";
+  }
+}
+
+static constexpr char LargeStringLiteral[] =
+    "012345678901234567890123456789012345678901234567890123456789012";
+
+TEST_ALWAYS_INLINE const char* getLargeString(DiffType D) {
+#define LARGE_STRING_FIRST "123456789012345678901234567890"
+#define LARGE_STRING_SECOND "234567890123456789012345678901"
+  switch (D) {
+    case DiffType::Control:
+      return "0" LARGE_STRING_FIRST "1" LARGE_STRING_SECOND "2";
+    case DiffType::ChangeFirst:
+      return "-" LARGE_STRING_FIRST "1" LARGE_STRING_SECOND "2";
+    case DiffType::ChangeMiddle:
+      return "0" LARGE_STRING_FIRST "-" LARGE_STRING_SECOND "2";
+    case DiffType::ChangeLast:
+      return "0" LARGE_STRING_FIRST "1" LARGE_STRING_SECOND "-";
+  }
+}
+
+TEST_ALWAYS_INLINE const char* getHugeString(DiffType D) {
+#define HUGE_STRING0 "0123456789"
+#define HUGE_STRING1 HUGE_STRING0 HUGE_STRING0 HUGE_STRING0 HUGE_STRING0
+#define HUGE_STRING2 HUGE_STRING1 HUGE_STRING1 HUGE_STRING1 HUGE_STRING1
+#define HUGE_STRING3 HUGE_STRING2 HUGE_STRING2 HUGE_STRING2 HUGE_STRING2
+#define HUGE_STRING4 HUGE_STRING3 HUGE_STRING3 HUGE_STRING3 HUGE_STRING3
+  switch (D) {
+    case DiffType::Control:
+      return "0123456789" HUGE_STRING4 "0123456789" HUGE_STRING4 "0123456789";
+    case DiffType::ChangeFirst:
+      return "-123456789" HUGE_STRING4 "0123456789" HUGE_STRING4 "0123456789";
+    case DiffType::ChangeMiddle:
+      return "0123456789" HUGE_STRING4 "01234-6789" HUGE_STRING4 "0123456789";
+    case DiffType::ChangeLast:
+      return "0123456789" HUGE_STRING4 "0123456789" HUGE_STRING4 "012345678-";
+  }
+}
+
+TEST_ALWAYS_INLINE const char* getString(Length L,
+                                         DiffType D = DiffType::Control) {
+  switch (L) {
+  case Length::Empty:
+    return "";
+  case Length::Small:
+    return getSmallString(D);
+  case Length::Large:
+    return getLargeString(D);
+  case Length::Huge:
+    return getHugeString(D);
+  }
+}
+
+TEST_ALWAYS_INLINE std::string makeString(Length L,
+                                          DiffType D = DiffType::Control,
+                                          Opacity O = Opacity::Transparent) {
+  switch (L) {
+  case Length::Empty:
+    return maybeOpaque("", O == Opacity::Opaque);
+  case Length::Small:
+    return maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+  case Length::Large:
+    return maybeOpaque(getLargeString(D), O == Opacity::Opaque);
+  case Length::Huge:
+    return maybeOpaque(getHugeString(D), O == Opacity::Opaque);
+  }
+}
+
+template <class Length, class Opaque>
+struct StringConstructDestroyCStr {
+  static void run(benchmark::State& state) {
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(
+          makeString(Length(), DiffType::Control, Opaque()));
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringConstructDestroyCStr" + Length::name() + Opaque::name();
+  }
+};
+
+template <class Length, bool MeasureCopy, bool MeasureDestroy>
+static void StringCopyAndDestroy(benchmark::State& state) {
+  static constexpr size_t NumStrings = 1024;
+  auto Orig = makeString(Length());
+  std::aligned_storage<sizeof(std::string)>::type Storage[NumStrings];
+
+  while (state.KeepRunningBatch(NumStrings)) {
+    if (!MeasureCopy)
+      state.PauseTiming();
+    for (size_t I = 0; I < NumStrings; ++I) {
+      ::new (static_cast<void*>(Storage + I)) std::string(Orig);
+    }
+    if (!MeasureCopy)
+      state.ResumeTiming();
+    if (!MeasureDestroy)
+      state.PauseTiming();
+    for (size_t I = 0; I < NumStrings; ++I) {
+      using S = std::string;
+      reinterpret_cast<S*>(Storage + I)->~S();
+    }
+    if (!MeasureDestroy)
+      state.ResumeTiming();
+  }
+}
+
+template <class Length>
+struct StringCopy {
+  static void run(benchmark::State& state) {
+    StringCopyAndDestroy<Length, true, false>(state);
+  }
+
+  static std::string name() { return "BM_StringCopy" + Length::name(); }
+};
+
+template <class Length>
+struct StringDestroy {
+  static void run(benchmark::State& state) {
+    StringCopyAndDestroy<Length, false, true>(state);
+  }
+
+  static std::string name() { return "BM_StringDestroy" + Length::name(); }
+};
+
+template <class Length>
+struct StringMove {
+  static void run(benchmark::State& state) {
+    // Keep two object locations and move construct back and forth.
+    std::aligned_storage<sizeof(std::string), alignof(std::string)>::type Storage[2];
+    using S = std::string;
+    size_t I = 0;
+    S *newS = new (static_cast<void*>(Storage)) std::string(makeString(Length()));
+    for (auto _ : state) {
+      // Switch locations.
+      I ^= 1;
+      benchmark::DoNotOptimize(Storage);
+      // Move construct into the new location,
+      S *tmpS = new (static_cast<void*>(Storage + I)) S(std::move(*newS));
+      // then destroy the old one.
+      newS->~S();
+      newS = tmpS;
+    }
+    newS->~S();
+  }
+
+  static std::string name() { return "BM_StringMove" + Length::name(); }
+};
+
+template <class Length, class Opaque>
+struct StringResizeDefaultInit {
+  static void run(benchmark::State& state) {
+    constexpr bool opaque = Opaque{} == Opacity::Opaque;
+    constexpr int kNumStrings = 4 << 10;
+    size_t length = makeString(Length()).size();
+    std::string strings[kNumStrings];
+    while (state.KeepRunningBatch(kNumStrings)) {
+      state.PauseTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        std::string().swap(strings[i]);
+      }
+      benchmark::DoNotOptimize(strings);
+      state.ResumeTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i].__resize_default_init(maybeOpaque(length, opaque));
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringResizeDefaultInit" + Length::name() + Opaque::name();
+  }
+};
+
+template <class Length, class Opaque>
+struct StringAssignStr {
+  static void run(benchmark::State& state) {
+    constexpr bool opaque = Opaque{} == Opacity::Opaque;
+    constexpr int kNumStrings = 4 << 10;
+    std::string src = makeString(Length());
+    std::string strings[kNumStrings];
+    while (state.KeepRunningBatch(kNumStrings)) {
+      state.PauseTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        std::string().swap(strings[i]);
+      }
+      benchmark::DoNotOptimize(strings);
+      state.ResumeTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i] = *maybeOpaque(&src, opaque);
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringAssignStr" + Length::name() + Opaque::name();
+  }
+};
+
+template <class Length, class Opaque>
+struct StringAssignAsciiz {
+  static void run(benchmark::State& state) {
+    constexpr bool opaque = Opaque{} == Opacity::Opaque;
+    constexpr int kNumStrings = 4 << 10;
+    std::string strings[kNumStrings];
+    while (state.KeepRunningBatch(kNumStrings)) {
+      state.PauseTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        std::string().swap(strings[i]);
+      }
+      benchmark::DoNotOptimize(strings);
+      state.ResumeTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i] = maybeOpaque(getString(Length()), opaque);
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringAssignAsciiz" + Length::name() + Opaque::name();
+  }
+};
+
+template <class Length, class Opaque>
+struct StringEraseToEnd {
+  static void run(benchmark::State& state) {
+    constexpr bool opaque = Opaque{} == Opacity::Opaque;
+    constexpr int kNumStrings = 4 << 10;
+    std::string strings[kNumStrings];
+    const int mid = makeString(Length()).size() / 2;
+    while (state.KeepRunningBatch(kNumStrings)) {
+      state.PauseTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i] = makeString(Length());
+      }
+      benchmark::DoNotOptimize(strings);
+      state.ResumeTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i].erase(maybeOpaque(mid, opaque),
+                         maybeOpaque(std::string::npos, opaque));
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringEraseToEnd" + Length::name() + Opaque::name();
+  }
+};
+
+template <class Length, class Opaque>
+struct StringEraseWithMove {
+  static void run(benchmark::State& state) {
+    constexpr bool opaque = Opaque{} == Opacity::Opaque;
+    constexpr int kNumStrings = 4 << 10;
+    std::string strings[kNumStrings];
+    const int n = makeString(Length()).size() / 2;
+    const int pos = n / 2;
+    while (state.KeepRunningBatch(kNumStrings)) {
+      state.PauseTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i] = makeString(Length());
+      }
+      benchmark::DoNotOptimize(strings);
+      state.ResumeTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        strings[i].erase(maybeOpaque(pos, opaque), maybeOpaque(n, opaque));
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringEraseWithMove" + Length::name() + Opaque::name();
+  }
+};
+
+template <class Opaque>
+struct StringAssignAsciizMix {
+  static void run(benchmark::State& state) {
+    constexpr auto O = Opaque{};
+    constexpr auto D = DiffType::Control;
+    constexpr int kNumStrings = 4 << 10;
+    std::string strings[kNumStrings];
+    while (state.KeepRunningBatch(kNumStrings)) {
+      state.PauseTiming();
+      for (int i = 0; i < kNumStrings; ++i) {
+        std::string().swap(strings[i]);
+      }
+      benchmark::DoNotOptimize(strings);
+      state.ResumeTiming();
+      for (int i = 0; i < kNumStrings - 7; i += 8) {
+        strings[i + 0] = maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+        strings[i + 1] = maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+        strings[i + 2] = maybeOpaque(getLargeString(D), O == Opacity::Opaque);
+        strings[i + 3] = maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+        strings[i + 4] = maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+        strings[i + 5] = maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+        strings[i + 6] = maybeOpaque(getLargeString(D), O == Opacity::Opaque);
+        strings[i + 7] = maybeOpaque(getSmallString(D), O == Opacity::Opaque);
+      }
+    }
+  }
+
+  static std::string name() {
+    return "BM_StringAssignAsciizMix" + Opaque::name();
+  }
+};
+
+enum class Relation { Eq, Less, Compare };
+struct AllRelations : EnumValuesAsTuple<AllRelations, Relation, 3> {
+  static constexpr const char* Names[] = {"Eq", "Less", "Compare"};
+};
+
+template <class Rel, class LHLength, class RHLength, class DiffType>
+struct StringRelational {
+  static void run(benchmark::State& state) {
+    auto Lhs = makeString(RHLength());
+    auto Rhs = makeString(LHLength(), DiffType());
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(Lhs);
+      benchmark::DoNotOptimize(Rhs);
+      switch (Rel()) {
+      case Relation::Eq:
+        benchmark::DoNotOptimize(Lhs == Rhs);
+        break;
+      case Relation::Less:
+        benchmark::DoNotOptimize(Lhs < Rhs);
+        break;
+      case Relation::Compare:
+        benchmark::DoNotOptimize(Lhs.compare(Rhs));
+        break;
+      }
+    }
+  }
+
+  static bool skip() {
+    // Eq is commutative, so skip half the matrix.
+    if (Rel() == Relation::Eq && LHLength() > RHLength())
+      return true;
+    // We only care about control when the lengths differ.
+    if (LHLength() != RHLength() && DiffType() != ::DiffType::Control)
+      return true;
+    // For empty, only control matters.
+    if (LHLength() == Length::Empty && DiffType() != ::DiffType::Control)
+      return true;
+    return false;
+  }
+
+  static std::string name() {
+    return "BM_StringRelational" + Rel::name() + LHLength::name() +
+           RHLength::name() + DiffType::name();
+  }
+};
+
+template <class Rel, class LHLength, class RHLength, class DiffType>
+struct StringRelationalLiteral {
+  static void run(benchmark::State& state) {
+    auto Lhs = makeString(LHLength(), DiffType());
+    for (auto _ : state) {
+      benchmark::DoNotOptimize(Lhs);
+      constexpr const char* Literal = RHLength::value == Length::Empty
+                                          ? ""
+                                          : RHLength::value == Length::Small
+                                                ? SmallStringLiteral
+                                                : LargeStringLiteral;
+      switch (Rel()) {
+      case Relation::Eq:
+        benchmark::DoNotOptimize(Lhs == Literal);
+        break;
+      case Relation::Less:
+        benchmark::DoNotOptimize(Lhs < Literal);
+        break;
+      case Relation::Compare:
+        benchmark::DoNotOptimize(Lhs.compare(Literal));
+        break;
+      }
+    }
+  }
+
+  static bool skip() {
+    // Doesn't matter how they differ if they have different size.
+    if (LHLength() != RHLength() && DiffType() != ::DiffType::Control)
+      return true;
+    // We don't need huge. Doensn't give anything different than Large.
+    if (LHLength() == Length::Huge || RHLength() == Length::Huge)
+      return true;
+    return false;
+  }
+
+  static std::string name() {
+    return "BM_StringRelationalLiteral" + Rel::name() + LHLength::name() +
+           RHLength::name() + DiffType::name();
+  }
+};
+
+enum class Depth { Shallow, Deep };
+struct AllDepths : EnumValuesAsTuple<AllDepths, Depth, 2> {
+  static constexpr const char* Names[] = {"Shallow", "Deep"};
+};
+
+enum class Temperature { Hot, Cold };
+struct AllTemperatures : EnumValuesAsTuple<AllTemperatures, Temperature, 2> {
+  static constexpr const char* Names[] = {"Hot", "Cold"};
+};
+
+template <class Temperature, class Depth, class Length>
+struct StringRead {
+  void run(benchmark::State& state) const {
+    static constexpr size_t NumStrings =
+        Temperature() == ::Temperature::Hot
+            ? 1 << 10
+            : /* Enough strings to overflow the cache */ 1 << 20;
+    static_assert((NumStrings & (NumStrings - 1)) == 0,
+                  "NumStrings should be a power of two to reduce overhead.");
+
+    std::vector<std::string> Values(NumStrings, makeString(Length()));
+    size_t I = 0;
+    for (auto _ : state) {
+      // Jump long enough to defeat cache locality, and use a value that is
+      // coprime with NumStrings to ensure we visit every element.
+      I = (I + 17) % NumStrings;
+      const auto& V = Values[I];
+
+      // Read everything first. Escaping data() through DoNotOptimize might
+      // cause the compiler to have to recalculate information about `V` due to
+      // aliasing.
+      const char* const Data = V.data();
+      const size_t Size = V.size();
+      benchmark::DoNotOptimize(Data);
+      benchmark::DoNotOptimize(Size);
+      if (Depth() == ::Depth::Deep) {
+        // Read into the payload. This mainly shows the benefit of SSO when the
+        // data is cold.
+        benchmark::DoNotOptimize(*Data);
+      }
+    }
+  }
+
+  static bool skip() {
+    // Huge does not give us anything that Large doesn't have. Skip it.
+    if (Length() == ::Length::Huge) {
+      return true;
+    }
+    return false;
+  }
+
+  std::string name() const {
+    return "BM_StringRead" + Temperature::name() + Depth::name() +
+           Length::name();
+  }
+};
+
+void sanityCheckGeneratedStrings() {
+  for (auto Lhs : {Length::Empty, Length::Small, Length::Large, Length::Huge}) {
+    const auto LhsString = makeString(Lhs);
+    for (auto Rhs :
+         {Length::Empty, Length::Small, Length::Large, Length::Huge}) {
+      if (Lhs > Rhs)
+        continue;
+      const auto RhsString = makeString(Rhs);
+
+      // The smaller one must be a prefix of the larger one.
+      if (RhsString.find(LhsString) != 0) {
+        fprintf(stderr, "Invalid autogenerated strings for sizes (%d,%d).\n",
+                static_cast<int>(Lhs), static_cast<int>(Rhs));
+        std::abort();
+      }
+    }
+  }
+  // Verify the autogenerated diffs
+  for (auto L : {Length::Small, Length::Large, Length::Huge}) {
+    const auto Control = makeString(L);
+    const auto Verify = [&](std::string Exp, size_t Pos) {
+      // Only change on the Pos char.
+      if (Control[Pos] != Exp[Pos]) {
+        Exp[Pos] = Control[Pos];
+        if (Control == Exp)
+          return;
+      }
+      fprintf(stderr, "Invalid autogenerated diff with size %d\n",
+              static_cast<int>(L));
+      std::abort();
+    };
+    Verify(makeString(L, DiffType::ChangeFirst), 0);
+    Verify(makeString(L, DiffType::ChangeMiddle), Control.size() / 2);
+    Verify(makeString(L, DiffType::ChangeLast), Control.size() - 1);
+  }
+}
+
+// Some small codegen thunks to easily see generated code.
+bool StringEqString(const std::string& a, const std::string& b) {
+  return a == b;
+}
+bool StringEqCStr(const std::string& a, const char* b) { return a == b; }
+bool CStrEqString(const char* a, const std::string& b) { return a == b; }
+bool StringEqCStrLiteralEmpty(const std::string& a) {
+  return a == "";
+}
+bool StringEqCStrLiteralSmall(const std::string& a) {
+  return a == SmallStringLiteral;
+}
+bool StringEqCStrLiteralLarge(const std::string& a) {
+  return a == LargeStringLiteral;
+}
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  sanityCheckGeneratedStrings();
+
+  makeCartesianProductBenchmark<StringConstructDestroyCStr, AllLengths,
+                                AllOpacity>();
+
+  makeCartesianProductBenchmark<StringAssignStr, AllLengths, AllOpacity>();
+  makeCartesianProductBenchmark<StringAssignAsciiz, AllLengths, AllOpacity>();
+  makeCartesianProductBenchmark<StringAssignAsciizMix, AllOpacity>();
+
+  makeCartesianProductBenchmark<StringCopy, AllLengths>();
+  makeCartesianProductBenchmark<StringMove, AllLengths>();
+  makeCartesianProductBenchmark<StringDestroy, AllLengths>();
+  makeCartesianProductBenchmark<StringResizeDefaultInit, AllLengths,
+                                AllOpacity>();
+  makeCartesianProductBenchmark<StringEraseToEnd, AllLengths, AllOpacity>();
+  makeCartesianProductBenchmark<StringEraseWithMove, AllLengths, AllOpacity>();
+  makeCartesianProductBenchmark<StringRelational, AllRelations, AllLengths,
+                                AllLengths, AllDiffTypes>();
+  makeCartesianProductBenchmark<StringRelationalLiteral, AllRelations,
+                                AllLengths, AllLengths, AllDiffTypes>();
+  makeCartesianProductBenchmark<StringRead, AllTemperatures, AllDepths,
+                                AllLengths>();
+  benchmark::RunSpecifiedBenchmarks();
+
+  if (argc < 0) {
+    // ODR-use the functions to force them being generated in the binary.
+    auto functions = std::make_tuple(
+        StringEqString, StringEqCStr, CStrEqString, StringEqCStrLiteralEmpty,
+        StringEqCStrLiteralSmall, StringEqCStrLiteralLarge);
+    printf("%p", &functions);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/stringstream.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/stringstream.bench.cpp
new file mode 100644
index 0000000..828ef4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/stringstream.bench.cpp
@@ -0,0 +1,40 @@
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+#include <sstream>
+
+TEST_NOINLINE double istream_numbers();
+
+double istream_numbers() {
+  const char *a[] = {
+    "-6  69 -71  2.4882e-02 -100 101 -2.00005 5000000 -50000000",
+    "-25 71   7 -9.3262e+01 -100 101 -2.00005 5000000 -50000000",
+    "-14 53  46 -6.7026e-02 -100 101 -2.00005 5000000 -50000000"
+  };
+
+  int a1, a2, a3, a4, a5, a6, a7;
+  double f1 = 0.0, f2 = 0.0, q = 0.0;
+  for (int i=0; i < 3; i++) {
+    std::istringstream s(a[i]);
+    s >> a1
+      >> a2
+      >> a3
+      >> f1
+      >> a4
+      >> a5
+      >> f2
+      >> a6
+      >> a7;
+    q += (a1 + a2 + a3 + a4 + a5 + a6 + a7 + f1 + f2)/1000000;
+  }
+  return q;
+}
+
+static void BM_Istream_numbers(benchmark::State &state) {
+  double i = 0;
+  while (state.KeepRunning())
+    benchmark::DoNotOptimize(i += istream_numbers());
+}
+
+BENCHMARK(BM_Istream_numbers)->RangeMultiplier(2)->Range(1024, 4096);
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/to_chars.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/to_chars.bench.cpp
new file mode 100644
index 0000000..1a3dc64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/to_chars.bench.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <array>
+#include <charconv>
+#include <random>
+
+#include "benchmark/benchmark.h"
+#include "test_macros.h"
+
+static const std::array<unsigned, 1000> input = [] {
+  std::mt19937 generator;
+  std::uniform_int_distribution<unsigned> distribution(0, std::numeric_limits<unsigned>::max());
+  std::array<unsigned, 1000> result;
+  std::generate_n(result.begin(), result.size(), [&] { return distribution(generator); });
+  return result;
+}();
+
+static void BM_to_chars_good(benchmark::State& state) {
+  char buffer[128];
+  int base = state.range(0);
+  while (state.KeepRunningBatch(input.size()))
+    for (auto value : input)
+      benchmark::DoNotOptimize(std::to_chars(buffer, &buffer[128], value, base));
+}
+BENCHMARK(BM_to_chars_good)->DenseRange(2, 36, 1);
+
+static void BM_to_chars_bad(benchmark::State& state) {
+  char buffer[128];
+  int base = state.range(0);
+  struct sample {
+    unsigned size;
+    unsigned value;
+  };
+  std::array<sample, 1000> data;
+  // Assume the failure occurs, on average, halfway during the conversion.
+  std::transform(input.begin(), input.end(), data.begin(), [&](unsigned value) {
+    std::to_chars_result result = std::to_chars(buffer, &buffer[128], value, base);
+    return sample{unsigned((result.ptr - buffer) / 2), value};
+  });
+
+  while (state.KeepRunningBatch(data.size()))
+    for (auto element : data)
+      benchmark::DoNotOptimize(std::to_chars(buffer, &buffer[element.size], element.value, base));
+}
+BENCHMARK(BM_to_chars_bad)->DenseRange(2, 36, 1);
+
+int main(int argc, char** argv) {
+  benchmark::Initialize(&argc, argv);
+  if (benchmark::ReportUnrecognizedArguments(argc, argv))
+    return 1;
+
+  benchmark::RunSpecifiedBenchmarks();
+}
diff --git a/app/src/main/cpp/libcxx/benchmarks/unordered_set_operations.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/unordered_set_operations.bench.cpp
new file mode 100644
index 0000000..acabc73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/unordered_set_operations.bench.cpp
@@ -0,0 +1,342 @@
+#include <unordered_set>
+#include <vector>
+#include <functional>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+
+#include "benchmark/benchmark.h"
+
+#include "ContainerBenchmarks.h"
+#include "GenerateInput.h"
+#include "test_macros.h"
+
+using namespace ContainerBenchmarks;
+
+constexpr std::size_t TestNumInputs = 1024;
+
+template <class _Size>
+inline TEST_ALWAYS_INLINE
+_Size loadword(const void* __p) {
+    _Size __r;
+    std::memcpy(&__r, __p, sizeof(__r));
+    return __r;
+}
+
+inline TEST_ALWAYS_INLINE
+std::size_t rotate_by_at_least_1(std::size_t __val, int __shift) {
+    return (__val >> __shift) | (__val << (64 - __shift));
+}
+
+inline TEST_ALWAYS_INLINE
+std::size_t hash_len_16(std::size_t __u, std::size_t __v) {
+    const  std::size_t __mul = 0x9ddfea08eb382d69ULL;
+    std::size_t __a = (__u ^ __v) * __mul;
+    __a ^= (__a >> 47);
+    std::size_t __b = (__v ^ __a) * __mul;
+    __b ^= (__b >> 47);
+    __b *= __mul;
+    return __b;
+}
+
+
+template <std::size_t _Len>
+inline TEST_ALWAYS_INLINE
+std::size_t hash_len_0_to_8(const char* __s) {
+    static_assert(_Len == 4 || _Len == 8, "");
+    const uint64_t __a = loadword<uint32_t>(__s);
+    const uint64_t __b = loadword<uint32_t>(__s + _Len - 4);
+    return hash_len_16(_Len + (__a << 3), __b);
+}
+
+struct UInt32Hash {
+  UInt32Hash() = default;
+  inline TEST_ALWAYS_INLINE
+  std::size_t operator()(uint32_t data) const {
+      return hash_len_0_to_8<4>(reinterpret_cast<const char*>(&data));
+  }
+};
+
+struct UInt64Hash {
+  UInt64Hash() = default;
+  inline TEST_ALWAYS_INLINE
+  std::size_t operator()(uint64_t data) const {
+      return hash_len_0_to_8<8>(reinterpret_cast<const char*>(&data));
+  }
+};
+
+struct UInt128Hash {
+  UInt128Hash() = default;
+  inline TEST_ALWAYS_INLINE
+  std::size_t operator()(__uint128_t data) const {
+      const __uint128_t __mask = static_cast<std::size_t>(-1);
+      const std::size_t __a = (std::size_t)(data & __mask);
+      const std::size_t __b = (std::size_t)((data & (__mask << 64)) >> 64);
+      return hash_len_16(__a, rotate_by_at_least_1(__b + 16, 16)) ^ __b;
+  }
+};
+
+struct UInt32Hash2 {
+  UInt32Hash2() = default;
+  inline TEST_ALWAYS_INLINE
+  std::size_t operator()(uint32_t data) const {
+      const uint32_t __m = 0x5bd1e995;
+      const uint32_t __r = 24;
+      uint32_t __h = 4;
+      uint32_t __k = data;
+        __k *= __m;
+        __k ^= __k >> __r;
+        __k *= __m;
+        __h *= __m;
+        __h ^= __k;
+        __h ^= __h >> 13;
+        __h *= __m;
+        __h ^= __h >> 15;
+    return __h;
+  }
+};
+
+struct UInt64Hash2 {
+  UInt64Hash2() = default;
+  inline TEST_ALWAYS_INLINE
+  std::size_t operator()(uint64_t data) const {
+      return hash_len_0_to_8<8>(reinterpret_cast<const char*>(&data));
+  }
+};
+
+// The sole purpose of this comparator is to be used in BM_Rehash, where
+// we need something slow enough to be easily noticable in benchmark results.
+// The default implementation of operator== for strings seems to be a little
+// too fast for that specific benchmark to reliably show a noticeable
+// improvement, but unoptimized bytewise comparison fits just right.
+// Early return is there just for convenience, since we only compare strings
+// of equal length in BM_Rehash.
+struct SlowStringEq {
+  SlowStringEq() = default;
+  inline TEST_ALWAYS_INLINE
+  bool operator()(const std::string& lhs, const std::string& rhs) const {
+      if (lhs.size() != rhs.size()) return false;
+
+      bool eq = true;
+      for (size_t i = 0; i < lhs.size(); ++i) {
+          eq &= lhs[i] == rhs[i];
+      }
+      return eq;
+  }
+};
+
+//----------------------------------------------------------------------------//
+//                               BM_Hash
+// ---------------------------------------------------------------------------//
+
+template <class HashFn, class GenInputs>
+void BM_Hash(benchmark::State& st, HashFn fn, GenInputs gen) {
+    auto in = gen(st.range(0));
+    const auto end = in.data() + in.size();
+    std::size_t last_hash = 0;
+    benchmark::DoNotOptimize(&last_hash);
+    while (st.KeepRunning()) {
+        for (auto it = in.data(); it != end; ++it) {
+            benchmark::DoNotOptimize(last_hash += fn(*it));
+        }
+        benchmark::ClobberMemory();
+    }
+}
+
+BENCHMARK_CAPTURE(BM_Hash,
+    uint32_random_std_hash,
+    std::hash<uint32_t>{},
+    getRandomIntegerInputs<uint32_t>) -> Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_Hash,
+    uint32_random_custom_hash,
+    UInt32Hash{},
+    getRandomIntegerInputs<uint32_t>) -> Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_Hash,
+    uint32_top_std_hash,
+    std::hash<uint32_t>{},
+    getSortedTopBitsIntegerInputs<uint32_t>) -> Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_Hash,
+    uint32_top_custom_hash,
+    UInt32Hash{},
+    getSortedTopBitsIntegerInputs<uint32_t>) -> Arg(TestNumInputs);
+
+
+//----------------------------------------------------------------------------//
+//                       BM_InsertValue
+// ---------------------------------------------------------------------------//
+
+
+// Sorted Ascending //
+BENCHMARK_CAPTURE(BM_InsertValue,
+    unordered_set_uint32,
+    std::unordered_set<uint32_t>{},
+    getRandomIntegerInputs<uint32_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_InsertValue,
+    unordered_set_uint32_sorted,
+    std::unordered_set<uint32_t>{},
+    getSortedIntegerInputs<uint32_t>)->Arg(TestNumInputs);
+
+// Top Bytes //
+BENCHMARK_CAPTURE(BM_InsertValue,
+    unordered_set_top_bits_uint32,
+    std::unordered_set<uint32_t>{},
+    getSortedTopBitsIntegerInputs<uint32_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_InsertValueRehash,
+    unordered_set_top_bits_uint32,
+    std::unordered_set<uint32_t, UInt32Hash>{},
+    getSortedTopBitsIntegerInputs<uint32_t>)->Arg(TestNumInputs);
+
+// String //
+BENCHMARK_CAPTURE(BM_InsertValue,
+    unordered_set_string,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_InsertValueRehash,
+    unordered_set_string,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+//----------------------------------------------------------------------------//
+//                         BM_Find
+// ---------------------------------------------------------------------------//
+
+// Random //
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_random_uint64,
+    std::unordered_set<uint64_t>{},
+    getRandomIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_random_uint64,
+    std::unordered_set<uint64_t, UInt64Hash>{},
+    getRandomIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+// Sorted //
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_sorted_uint64,
+    std::unordered_set<uint64_t>{},
+    getSortedIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_sorted_uint64,
+    std::unordered_set<uint64_t, UInt64Hash>{},
+    getSortedIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+
+// Sorted //
+#if 1
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_sorted_uint128,
+    std::unordered_set<__uint128_t, UInt128Hash>{},
+    getSortedTopBitsIntegerInputs<__uint128_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_sorted_uint128,
+    std::unordered_set<__uint128_t, UInt128Hash>{},
+    getSortedTopBitsIntegerInputs<__uint128_t>)->Arg(TestNumInputs);
+#endif
+
+// Sorted //
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_sorted_uint32,
+    std::unordered_set<uint32_t>{},
+    getSortedIntegerInputs<uint32_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_sorted_uint32,
+    std::unordered_set<uint32_t, UInt32Hash2>{},
+    getSortedIntegerInputs<uint32_t>)->Arg(TestNumInputs);
+
+// Sorted Ascending //
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_sorted_large_uint64,
+    std::unordered_set<uint64_t>{},
+    getSortedLargeIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_sorted_large_uint64,
+    std::unordered_set<uint64_t, UInt64Hash>{},
+    getSortedLargeIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+
+// Top Bits //
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_top_bits_uint64,
+    std::unordered_set<uint64_t>{},
+    getSortedTopBitsIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_top_bits_uint64,
+    std::unordered_set<uint64_t, UInt64Hash>{},
+    getSortedTopBitsIntegerInputs<uint64_t>)->Arg(TestNumInputs);
+
+// String //
+BENCHMARK_CAPTURE(BM_Find,
+    unordered_set_string,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_FindRehash,
+    unordered_set_string,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+//----------------------------------------------------------------------------//
+//                         BM_Rehash
+// ---------------------------------------------------------------------------//
+
+BENCHMARK_CAPTURE(BM_Rehash,
+    unordered_set_string_arg,
+    std::unordered_set<std::string, std::hash<std::string>, SlowStringEq>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_Rehash,
+    unordered_set_int_arg,
+    std::unordered_set<int>{},
+    getRandomIntegerInputs<int>)->Arg(TestNumInputs);
+
+///////////////////////////////////////////////////////////////////////////////
+BENCHMARK_CAPTURE(BM_InsertDuplicate,
+    unordered_set_int,
+    std::unordered_set<int>{},
+    getRandomIntegerInputs<int>)->Arg(TestNumInputs);
+BENCHMARK_CAPTURE(BM_InsertDuplicate,
+    unordered_set_string,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_EmplaceDuplicate,
+    unordered_set_int,
+    std::unordered_set<int>{},
+    getRandomIntegerInputs<int>)->Arg(TestNumInputs);
+BENCHMARK_CAPTURE(BM_EmplaceDuplicate,
+    unordered_set_string,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_InsertDuplicate,
+    unordered_set_int_insert_arg,
+    std::unordered_set<int>{},
+    getRandomIntegerInputs<int>)->Arg(TestNumInputs);
+BENCHMARK_CAPTURE(BM_InsertDuplicate,
+    unordered_set_string_insert_arg,
+    std::unordered_set<std::string>{},
+    getRandomStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_EmplaceDuplicate,
+    unordered_set_int_insert_arg,
+    std::unordered_set<int>{},
+    getRandomIntegerInputs<unsigned>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_EmplaceDuplicate,
+    unordered_set_string_arg,
+    std::unordered_set<std::string>{},
+    getRandomCStringInputs)->Arg(TestNumInputs);
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/util_smartptr.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/util_smartptr.bench.cpp
new file mode 100644
index 0000000..053cbd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/util_smartptr.bench.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+
+#include "benchmark/benchmark.h"
+
+static void BM_SharedPtrCreateDestroy(benchmark::State& st) {
+  while (st.KeepRunning()) {
+    auto sp = std::make_shared<int>(42);
+    benchmark::DoNotOptimize(sp.get());
+  }
+}
+BENCHMARK(BM_SharedPtrCreateDestroy);
+
+static void BM_SharedPtrIncDecRef(benchmark::State& st) {
+  auto sp = std::make_shared<int>(42);
+  benchmark::DoNotOptimize(sp.get());
+  while (st.KeepRunning()) {
+    std::shared_ptr<int> sp2(sp);
+    benchmark::ClobberMemory();
+  }
+}
+BENCHMARK(BM_SharedPtrIncDecRef);
+
+static void BM_WeakPtrIncDecRef(benchmark::State& st) {
+  auto sp = std::make_shared<int>(42);
+  benchmark::DoNotOptimize(sp.get());
+  while (st.KeepRunning()) {
+    std::weak_ptr<int> wp(sp);
+    benchmark::ClobberMemory();
+  }
+}
+BENCHMARK(BM_WeakPtrIncDecRef);
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/variant_visit_1.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/variant_visit_1.bench.cpp
new file mode 100644
index 0000000..7d736f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/variant_visit_1.bench.cpp
@@ -0,0 +1,27 @@
+#include "benchmark/benchmark.h"
+
+#include "VariantBenchmarks.h"
+
+using namespace VariantBenchmarks;
+
+BENCHMARK_TEMPLATE(BM_Visit, 1, 1);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 2);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 3);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 4);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 5);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 6);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 7);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 8);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 9);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 10);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 20);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 30);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 40);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 50);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 60);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 70);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 80);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 90);
+BENCHMARK_TEMPLATE(BM_Visit, 1, 100);
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/variant_visit_2.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/variant_visit_2.bench.cpp
new file mode 100644
index 0000000..ed26cd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/variant_visit_2.bench.cpp
@@ -0,0 +1,22 @@
+#include "benchmark/benchmark.h"
+
+#include "VariantBenchmarks.h"
+
+using namespace VariantBenchmarks;
+
+BENCHMARK_TEMPLATE(BM_Visit, 2, 1);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 2);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 3);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 4);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 5);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 6);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 7);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 8);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 9);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 10);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 20);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 30);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 40);
+BENCHMARK_TEMPLATE(BM_Visit, 2, 50);
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/variant_visit_3.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/variant_visit_3.bench.cpp
new file mode 100644
index 0000000..b20d503
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/variant_visit_3.bench.cpp
@@ -0,0 +1,20 @@
+#include "benchmark/benchmark.h"
+
+#include "VariantBenchmarks.h"
+
+using namespace VariantBenchmarks;
+
+BENCHMARK_TEMPLATE(BM_Visit, 3, 1);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 2);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 3);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 4);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 5);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 6);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 7);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 8);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 9);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 10);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 15);
+BENCHMARK_TEMPLATE(BM_Visit, 3, 20);
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/benchmarks/vector_operations.bench.cpp b/app/src/main/cpp/libcxx/benchmarks/vector_operations.bench.cpp
new file mode 100644
index 0000000..70a317d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/benchmarks/vector_operations.bench.cpp
@@ -0,0 +1,40 @@
+#include <vector>
+#include <functional>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+
+#include "benchmark/benchmark.h"
+
+#include "ContainerBenchmarks.h"
+#include "GenerateInput.h"
+
+using namespace ContainerBenchmarks;
+
+constexpr std::size_t TestNumInputs = 1024;
+
+BENCHMARK_CAPTURE(BM_ConstructSize,
+    vector_byte,
+    std::vector<unsigned char>{})->Arg(5140480);
+
+BENCHMARK_CAPTURE(BM_ConstructSizeValue,
+    vector_byte,
+    std::vector<unsigned char>{}, 0)->Arg(5140480);
+
+BENCHMARK_CAPTURE(BM_ConstructIterIter,
+  vector_char,
+  std::vector<char>{},
+  getRandomIntegerInputs<char>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_ConstructIterIter,
+  vector_size_t,
+  std::vector<size_t>{},
+  getRandomIntegerInputs<size_t>)->Arg(TestNumInputs);
+
+BENCHMARK_CAPTURE(BM_ConstructIterIter,
+  vector_string,
+  std::vector<std::string>{},
+  getRandomStringInputs)->Arg(TestNumInputs);
+
+
+BENCHMARK_MAIN();
diff --git a/app/src/main/cpp/libcxx/cmake/Modules/CodeCoverage.cmake b/app/src/main/cpp/libcxx/cmake/Modules/CodeCoverage.cmake
new file mode 100644
index 0000000..1bd3a78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/Modules/CodeCoverage.cmake
@@ -0,0 +1,50 @@
+find_program(CODE_COVERAGE_LCOV lcov)
+if (NOT CODE_COVERAGE_LCOV)
+  message(FATAL_ERROR "Cannot find lcov...")
+endif()
+
+find_program(CODE_COVERAGE_LLVM_COV llvm-cov)
+if (NOT CODE_COVERAGE_LLVM_COV)
+  message(FATAL_ERROR "Cannot find llvm-cov...")
+endif()
+
+find_program(CODE_COVERAGE_GENHTML genhtml)
+if (NOT CODE_COVERAGE_GENHTML)
+  message(FATAL_ERROR "Cannot find genhtml...")
+endif()
+
+set(CMAKE_CXX_FLAGS_COVERAGE "-g -O0 --coverage")
+
+function(setup_lcov_test_target_coverage target_name output_dir capture_dirs source_dirs)
+  if (NOT DEFINED LIBCXX_BINARY_DIR)
+    message(FATAL_ERROR "Variable must be set")
+  endif()
+
+  set(GCOV_TOOL "${LIBCXX_BINARY_DIR}/llvm-cov-wrapper")
+  file(GENERATE OUTPUT ${GCOV_TOOL}
+    CONTENT "#!/usr/bin/env bash\n${CODE_COVERAGE_LLVM_COV} gcov \"$@\"\n")
+
+  file(MAKE_DIRECTORY ${output_dir})
+
+  set(CAPTURE_DIRS "")
+  foreach(cdir ${capture_dirs})
+    list(APPEND CAPTURE_DIRS "-d;${cdir}")
+  endforeach()
+
+  set(EXTRACT_DIRS "")
+  foreach(sdir ${source_dirs})
+    list(APPEND EXTRACT_DIRS "'${sdir}/*'")
+  endforeach()
+
+  message(STATUS "Capture Directories: ${CAPTURE_DIRS}")
+  message(STATUS "Extract Directories: ${EXTRACT_DIRS}")
+
+  add_custom_target(generate-lib${target_name}-coverage
+        COMMAND chmod +x ${GCOV_TOOL}
+        COMMAND ${CODE_COVERAGE_LCOV} --gcov-tool ${GCOV_TOOL} --capture ${CAPTURE_DIRS} -o test_coverage.info
+        COMMAND ${CODE_COVERAGE_LCOV} --gcov-tool ${GCOV_TOOL} --extract test_coverage.info ${EXTRACT_DIRS} -o test_coverage.info
+        COMMAND ${CODE_COVERAGE_GENHTML} --demangle-cpp test_coverage.info -o test_coverage
+        COMMAND ${CMAKE_COMMAND} -E remove test_coverage.info
+        WORKING_DIRECTORY ${output_dir}
+        COMMENT "Generating coverage results")
+endfunction()
diff --git a/app/src/main/cpp/libcxx/cmake/Modules/HandleLibCXXABI.cmake b/app/src/main/cpp/libcxx/cmake/Modules/HandleLibCXXABI.cmake
new file mode 100644
index 0000000..20fb818
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/Modules/HandleLibCXXABI.cmake
@@ -0,0 +1,182 @@
+#===============================================================================
+# Define targets for linking against the selected ABI library
+#
+# After including this file, the following targets are defined:
+# - libcxx-abi-headers: An interface target that allows getting access to the
+#                       headers of the selected ABI library.
+# - libcxx-abi-shared: A target representing the selected shared ABI library.
+# - libcxx-abi-static: A target representing the selected static ABI library.
+#
+# Furthermore, some ABI libraries also define the following target:
+# - libcxx-abi-shared-objects: An object library representing a set of object files
+#                              constituting the ABI library, suitable for bundling
+#                              into a shared library.
+# - libcxx-abi-static-objects: An object library representing a set of object files
+#                              constituting the ABI library, suitable for bundling
+#                              into a static library.
+#===============================================================================
+
+include(GNUInstallDirs)
+
+# This function copies the provided headers to a private directory and adds that
+# path to the given INTERFACE target. That target can then be linked against to
+# get access to those headers (and only those).
+#
+# The problem this solves is that when building against a system-provided ABI library,
+# the ABI headers might live side-by-side with an actual C++ Standard Library
+# installation. For that reason, we can't just add `-I <path-to-ABI-headers>`,
+# since we would end up also adding the system-provided C++ Standard Library to
+# the search path. Instead, what we do is copy just the ABI library headers to
+# a private directory and add just that path when we build libc++.
+function(import_private_headers target include_dirs headers)
+  foreach(header ${headers})
+    set(found FALSE)
+    foreach(incpath ${include_dirs})
+      if (EXISTS "${incpath}/${header}")
+        set(found TRUE)
+        message(STATUS "Looking for ${header} in ${incpath} - found")
+        get_filename_component(dstdir ${header} PATH)
+        get_filename_component(header_file ${header} NAME)
+        set(src ${incpath}/${header})
+        set(dst "${LIBCXX_BINARY_DIR}/private-abi-headers/${dstdir}/${header_file}")
+
+        add_custom_command(OUTPUT ${dst}
+            DEPENDS ${src}
+            COMMAND ${CMAKE_COMMAND} -E make_directory "${LIBCXX_BINARY_DIR}/private-abi-headers/${dstdir}"
+            COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
+            COMMENT "Copying C++ ABI header ${header}")
+        list(APPEND abilib_headers "${dst}")
+      else()
+        message(STATUS "Looking for ${header} in ${incpath} - not found")
+      endif()
+    endforeach()
+    if (NOT found)
+      message(WARNING "Failed to find ${header} in ${include_dirs}")
+    endif()
+  endforeach()
+
+  # Work around https://gitlab.kitware.com/cmake/cmake/-/issues/18399
+  add_library(${target}-generate-private-headers OBJECT ${abilib_headers})
+  set_target_properties(${target}-generate-private-headers PROPERTIES LINKER_LANGUAGE CXX)
+
+  target_link_libraries(${target} INTERFACE ${target}-generate-private-headers)
+  target_include_directories(${target} INTERFACE "${LIBCXX_BINARY_DIR}/private-abi-headers")
+endfunction()
+
+# This function creates an imported static library named <target>.
+# It imports a library named <name> searched at the given <path>.
+function(import_static_library target path name)
+  add_library(${target} STATIC IMPORTED GLOBAL)
+  find_library(file
+    NAMES "${CMAKE_STATIC_LIBRARY_PREFIX}${name}${CMAKE_STATIC_LIBRARY_SUFFIX}"
+    PATHS "${path}"
+    NO_CACHE)
+  set_target_properties(${target} PROPERTIES IMPORTED_LOCATION "${file}")
+endfunction()
+
+# This function creates an imported shared (interface) library named <target>
+# for the given library <name>.
+function(import_shared_library target name)
+  add_library(${target} INTERFACE IMPORTED GLOBAL)
+  set_target_properties(${target} PROPERTIES IMPORTED_LIBNAME "${name}")
+endfunction()
+
+# Link against a system-provided libstdc++
+if ("${LIBCXX_CXX_ABI}" STREQUAL "libstdc++")
+  add_library(libcxx-abi-headers INTERFACE)
+  import_private_headers(libcxx-abi-headers "${LIBCXX_CXX_ABI_INCLUDE_PATHS}"
+    "cxxabi.h;bits/c++config.h;bits/os_defines.h;bits/cpu_defines.h;bits/cxxabi_tweaks.h;bits/cxxabi_forced.h")
+  target_compile_definitions(libcxx-abi-headers INTERFACE "-DLIBSTDCXX" "-D__GLIBCXX__")
+
+  import_shared_library(libcxx-abi-shared stdc++)
+  target_link_libraries(libcxx-abi-shared INTERFACE libcxx-abi-headers)
+
+  import_static_library(libcxx-abi-static "${LIBCXX_CXX_ABI_LIBRARY_PATH}" stdc++)
+  target_link_libraries(libcxx-abi-static INTERFACE libcxx-abi-headers)
+
+# Link against a system-provided libsupc++
+elseif ("${LIBCXX_CXX_ABI}" STREQUAL "libsupc++")
+  add_library(libcxx-abi-headers INTERFACE)
+  import_private_headers(libcxx-abi-headers "${LIBCXX_CXX_ABI_INCLUDE_PATHS}"
+    "cxxabi.h;bits/c++config.h;bits/os_defines.h;bits/cpu_defines.h;bits/cxxabi_tweaks.h;bits/cxxabi_forced.h")
+  target_compile_definitions(libcxx-abi-headers INTERFACE "-D__GLIBCXX__")
+
+  import_shared_library(libcxx-abi-shared supc++)
+  target_link_libraries(libcxx-abi-shared INTERFACE libcxx-abi-headers)
+
+  import_static_library(libcxx-abi-static "${LIBCXX_CXX_ABI_LIBRARY_PATH}" supc++)
+  target_link_libraries(libcxx-abi-static INTERFACE libcxx-abi-headers)
+
+# Link against the in-tree libc++abi
+elseif ("${LIBCXX_CXX_ABI}" STREQUAL "libcxxabi")
+  add_library(libcxx-abi-headers INTERFACE)
+  target_link_libraries(libcxx-abi-headers INTERFACE cxxabi-headers)
+  target_compile_definitions(libcxx-abi-headers INTERFACE "-DLIBCXX_BUILDING_LIBCXXABI")
+
+  if (TARGET cxxabi_shared)
+    add_library(libcxx-abi-shared ALIAS cxxabi_shared)
+  endif()
+
+  if (TARGET cxxabi_static)
+    add_library(libcxx-abi-static ALIAS cxxabi_static)
+  endif()
+
+  if (TARGET cxxabi_shared_objects)
+    add_library(libcxx-abi-shared-objects ALIAS cxxabi_shared_objects)
+  endif()
+
+  if (TARGET cxxabi_static_objects)
+    add_library(libcxx-abi-static-objects ALIAS cxxabi_static_objects)
+  endif()
+
+# Link against a system-provided libc++abi
+elseif ("${LIBCXX_CXX_ABI}" STREQUAL "system-libcxxabi")
+  add_library(libcxx-abi-headers INTERFACE)
+  import_private_headers(libcxx-abi-headers "${LIBCXX_CXX_ABI_INCLUDE_PATHS}" "cxxabi.h;__cxxabi_config.h")
+  target_compile_definitions(libcxx-abi-headers INTERFACE "-DLIBCXX_BUILDING_LIBCXXABI")
+
+  import_shared_library(libcxx-abi-shared c++abi)
+  target_link_libraries(libcxx-abi-shared INTERFACE libcxx-abi-headers)
+
+  import_static_library(libcxx-abi-static "${LIBCXX_CXX_ABI_LIBRARY_PATH}" c++abi)
+  target_link_libraries(libcxx-abi-static INTERFACE libcxx-abi-headers)
+
+# Link against a system-provided libcxxrt
+elseif ("${LIBCXX_CXX_ABI}" STREQUAL "libcxxrt")
+  # libcxxrt does not provide aligned new and delete operators
+  # TODO: We're keeping this for backwards compatibility, but this doesn't belong here.
+  set(LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS ON)
+
+  if(NOT LIBCXX_CXX_ABI_INCLUDE_PATHS)
+    message(STATUS "LIBCXX_CXX_ABI_INCLUDE_PATHS not set, using /usr/include/c++/v1")
+    set(LIBCXX_CXX_ABI_INCLUDE_PATHS "/usr/include/c++/v1")
+  endif()
+  add_library(libcxx-abi-headers INTERFACE)
+  import_private_headers(libcxx-abi-headers "${LIBCXX_CXX_ABI_INCLUDE_PATHS}"
+    "cxxabi.h;unwind.h;unwind-arm.h;unwind-itanium.h")
+  target_compile_definitions(libcxx-abi-headers INTERFACE "-DLIBCXXRT")
+
+  import_shared_library(libcxx-abi-shared cxxrt)
+  target_link_libraries(libcxx-abi-shared INTERFACE libcxx-abi-headers)
+
+  import_static_library(libcxx-abi-static "${LIBCXX_CXX_ABI_LIBRARY_PATH}" cxxrt)
+  target_link_libraries(libcxx-abi-static INTERFACE libcxx-abi-headers)
+
+# Link against a system-provided vcruntime
+# FIXME: Figure out how to configure the ABI library on Windows.
+elseif ("${LIBCXX_CXX_ABI}" STREQUAL "vcruntime")
+  add_library(libcxx-abi-headers INTERFACE)
+  add_library(libcxx-abi-shared INTERFACE)
+  add_library(libcxx-abi-static INTERFACE)
+
+# Don't link against any ABI library
+elseif ("${LIBCXX_CXX_ABI}" STREQUAL "none")
+  add_library(libcxx-abi-headers INTERFACE)
+  target_compile_definitions(libcxx-abi-headers INTERFACE "-D_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY")
+
+  add_library(libcxx-abi-shared INTERFACE)
+  target_link_libraries(libcxx-abi-shared INTERFACE libcxx-abi-headers)
+
+  add_library(libcxx-abi-static INTERFACE)
+  target_link_libraries(libcxx-abi-static INTERFACE libcxx-abi-headers)
+endif()
diff --git a/app/src/main/cpp/libcxx/cmake/Modules/HandleLibcxxFlags.cmake b/app/src/main/cpp/libcxx/cmake/Modules/HandleLibcxxFlags.cmake
new file mode 100644
index 0000000..7251254
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/Modules/HandleLibcxxFlags.cmake
@@ -0,0 +1,254 @@
+# HandleLibcxxFlags - A set of macros used to setup the flags used to compile
+# and link libc++. These macros add flags to the following CMake variables.
+# - LIBCXX_COMPILE_FLAGS: flags used to compile libc++
+# - LIBCXX_LINK_FLAGS: flags used to link libc++
+# - LIBCXX_LIBRARIES: libraries to link libc++ to.
+
+include(CheckCXXCompilerFlag)
+
+unset(add_flag_if_supported)
+
+# Mangle the name of a compiler flag into a valid CMake identifier.
+# Ex: --std=c++11 -> STD_EQ_CXX11
+macro(mangle_name str output)
+  string(STRIP "${str}" strippedStr)
+  string(REGEX REPLACE "^/" "" strippedStr "${strippedStr}")
+  string(REGEX REPLACE "^-+" "" strippedStr "${strippedStr}")
+  string(REGEX REPLACE "-+$" "" strippedStr "${strippedStr}")
+  string(REPLACE "-" "_" strippedStr "${strippedStr}")
+  string(REPLACE ":" "_COLON_" strippedStr "${strippedStr}")
+  string(REPLACE "=" "_EQ_" strippedStr "${strippedStr}")
+  string(REPLACE "+" "X" strippedStr "${strippedStr}")
+  string(TOUPPER "${strippedStr}" ${output})
+endmacro()
+
+# Remove a list of flags from all CMake variables that affect compile flags.
+# This can be used to remove unwanted flags specified on the command line
+# or added in other parts of LLVM's cmake configuration.
+macro(remove_flags)
+  foreach(var ${ARGN})
+    string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
+    string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL}")
+    string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
+    string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
+    string(REPLACE "${var}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+    string(REPLACE "${var}" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+    string(REPLACE "${var}" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
+    string(REPLACE "${var}" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
+    string(REPLACE "${var}" "" CMAKE_SHARED_MODULE_FLAGS "${CMAKE_SHARED_MODULE_FLAGS}")
+    remove_definitions(${var})
+  endforeach()
+endmacro(remove_flags)
+
+macro(check_flag_supported flag)
+    mangle_name("${flag}" flagname)
+    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+endmacro()
+
+macro(append_flags DEST)
+  foreach(value ${ARGN})
+    list(APPEND ${DEST} ${value})
+    list(APPEND ${DEST} ${value})
+  endforeach()
+endmacro()
+
+# If the specified 'condition' is true then append the specified list of flags to DEST
+macro(append_flags_if condition DEST)
+  if (${condition})
+    list(APPEND ${DEST} ${ARGN})
+  endif()
+endmacro()
+
+# Add each flag in the list specified by DEST if that flag is supported by the current compiler.
+macro(append_flags_if_supported DEST)
+  foreach(flag ${ARGN})
+    mangle_name("${flag}" flagname)
+    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+    append_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${DEST} ${flag})
+  endforeach()
+endmacro()
+
+# Add a macro definition if condition is true.
+macro(define_if condition def)
+  if (${condition})
+    add_definitions(${def})
+  endif()
+endmacro()
+
+# Add a macro definition if condition is not true.
+macro(define_if_not condition def)
+  if (NOT ${condition})
+    add_definitions(${def})
+  endif()
+endmacro()
+
+# Add a macro definition to the __config_site file if the specified condition
+# is 'true'. Note that '-D${def}' is not added. Instead it is expected that
+# the build include the '__config_site' header.
+macro(config_define_if condition def)
+  if (${condition})
+    set(${def} ON)
+  endif()
+endmacro()
+
+macro(config_define_if_not condition def)
+  if (NOT ${condition})
+    set(${def} ON)
+  endif()
+endmacro()
+
+macro(config_define value def)
+  set(${def} ${value})
+endmacro()
+
+# Add a list of flags to all of 'CMAKE_CXX_FLAGS', 'CMAKE_C_FLAGS',
+# 'LIBCXX_COMPILE_FLAGS' and 'LIBCXX_LINK_FLAGS'.
+macro(add_target_flags)
+  foreach(value ${ARGN})
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${value}")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${value}")
+    list(APPEND LIBCXX_COMPILE_FLAGS ${value})
+    list(APPEND LIBCXX_LINK_FLAGS ${value})
+  endforeach()
+endmacro()
+
+# If the specified 'condition' is true then add a list of flags to
+# all of 'CMAKE_CXX_FLAGS', 'CMAKE_C_FLAGS', 'LIBCXX_COMPILE_FLAGS'
+# and 'LIBCXX_LINK_FLAGS'.
+macro(add_target_flags_if condition)
+  if (${condition})
+    add_target_flags(${ARGN})
+  endif()
+endmacro()
+
+# Add all the flags supported by the compiler to all of
+# 'CMAKE_CXX_FLAGS', 'CMAKE_C_FLAGS', 'LIBCXX_COMPILE_FLAGS'
+# and 'LIBCXX_LINK_FLAGS'.
+macro(add_target_flags_if_supported)
+  foreach(flag ${ARGN})
+    mangle_name("${flag}" flagname)
+    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+    add_target_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
+  endforeach()
+endmacro()
+
+# Add a specified list of flags to both 'LIBCXX_COMPILE_FLAGS' and
+# 'LIBCXX_LINK_FLAGS'.
+macro(add_flags)
+  foreach(value ${ARGN})
+    list(APPEND LIBCXX_COMPILE_FLAGS ${value})
+    list(APPEND LIBCXX_LINK_FLAGS ${value})
+  endforeach()
+endmacro()
+
+# If the specified 'condition' is true then add a list of flags to both
+# 'LIBCXX_COMPILE_FLAGS' and 'LIBCXX_LINK_FLAGS'.
+macro(add_flags_if condition)
+  if (${condition})
+    add_flags(${ARGN})
+  endif()
+endmacro()
+
+# Add each flag in the list to LIBCXX_COMPILE_FLAGS and LIBCXX_LINK_FLAGS
+# if that flag is supported by the current compiler.
+macro(add_flags_if_supported)
+  foreach(flag ${ARGN})
+      mangle_name("${flag}" flagname)
+      check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+      add_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
+  endforeach()
+endmacro()
+
+# Add a list of flags to 'LIBCXX_COMPILE_FLAGS'.
+macro(add_compile_flags)
+  foreach(f ${ARGN})
+    list(APPEND LIBCXX_COMPILE_FLAGS ${f})
+  endforeach()
+endmacro()
+
+# If 'condition' is true then add the specified list of flags to
+# 'LIBCXX_COMPILE_FLAGS'
+macro(add_compile_flags_if condition)
+  if (${condition})
+    add_compile_flags(${ARGN})
+  endif()
+endmacro()
+
+# For each specified flag, add that flag to 'LIBCXX_COMPILE_FLAGS' if the
+# flag is supported by the C++ compiler.
+macro(add_compile_flags_if_supported)
+  foreach(flag ${ARGN})
+      mangle_name("${flag}" flagname)
+      check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+      add_compile_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
+  endforeach()
+endmacro()
+
+# Add a list of flags to 'LIBCXX_LINK_FLAGS'.
+macro(add_link_flags)
+  foreach(f ${ARGN})
+    list(APPEND LIBCXX_LINK_FLAGS ${f})
+  endforeach()
+endmacro()
+
+# If 'condition' is true then add the specified list of flags to
+# 'LIBCXX_LINK_FLAGS'
+macro(add_link_flags_if condition)
+  if (${condition})
+    add_link_flags(${ARGN})
+  endif()
+endmacro()
+
+# For each specified flag, add that flag to 'LIBCXX_LINK_FLAGS' if the
+# flag is supported by the C++ compiler.
+macro(add_link_flags_if_supported)
+  foreach(flag ${ARGN})
+    mangle_name("${flag}" flagname)
+    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+    add_link_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${flag})
+  endforeach()
+endmacro()
+
+# Add a list of libraries or link flags to 'LIBCXX_LIBRARIES'.
+macro(add_library_flags)
+  foreach(lib ${ARGN})
+    list(APPEND LIBCXX_LIBRARIES ${lib})
+  endforeach()
+endmacro()
+
+# if 'condition' is true then add the specified list of libraries and flags
+# to 'LIBCXX_LIBRARIES'.
+macro(add_library_flags_if condition)
+  if(${condition})
+    add_library_flags(${ARGN})
+  endif()
+endmacro()
+
+# Turn a comma separated CMake list into a space separated string.
+macro(split_list listname)
+  string(REPLACE ";" " " ${listname} "${${listname}}")
+endmacro()
+
+# For each specified flag, add that link flag to the provided target.
+# The flags are added with the given visibility, i.e. PUBLIC|PRIVATE|INTERFACE.
+function(target_add_link_flags_if_supported target visibility)
+  foreach(flag ${ARGN})
+    mangle_name("${flag}" flagname)
+    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+    if (CXX_SUPPORTS_${flagname}_FLAG)
+      target_link_libraries(${target} ${visibility} ${flag})
+    endif()
+  endforeach()
+endfunction()
+
+# For each specified flag, add that compile flag to the provided target.
+# The flags are added with the given visibility, i.e. PUBLIC|PRIVATE|INTERFACE.
+function(target_add_compile_flags_if_supported target visibility)
+  foreach(flag ${ARGN})
+    mangle_name("${flag}" flagname)
+    check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG")
+    if (CXX_SUPPORTS_${flagname}_FLAG)
+      target_compile_options(${target} ${visibility} ${flag})
+    endif()
+  endforeach()
+endfunction()
diff --git a/app/src/main/cpp/libcxx/cmake/Modules/MacroEnsureOutOfSourceBuild.cmake b/app/src/main/cpp/libcxx/cmake/Modules/MacroEnsureOutOfSourceBuild.cmake
new file mode 100644
index 0000000..a066936
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/Modules/MacroEnsureOutOfSourceBuild.cmake
@@ -0,0 +1,18 @@
+# MACRO_ENSURE_OUT_OF_SOURCE_BUILD(<errorMessage>)
+
+macro( MACRO_ENSURE_OUT_OF_SOURCE_BUILD _errorMessage )
+
+string( COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" _insource )
+if( _insource )
+ message( SEND_ERROR "${_errorMessage}" )
+ message( FATAL_ERROR
+ "In-source builds are not allowed.
+ CMake would overwrite the makefiles distributed with Compiler-RT.
+ Please create a directory and run cmake from there, passing the path
+ to this source directory as the last argument.
+ This process created the file `CMakeCache.txt' and the directory `CMakeFiles'.
+ Please delete them."
+ )
+endif( _insource )
+
+endmacro( MACRO_ENSURE_OUT_OF_SOURCE_BUILD )
diff --git a/app/src/main/cpp/libcxx/cmake/caches/AArch64.cmake b/app/src/main/cpp/libcxx/cmake/caches/AArch64.cmake
new file mode 100644
index 0000000..fa802d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/AArch64.cmake
@@ -0,0 +1,2 @@
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(CMAKE_CXX_COMPILER_TARGET "aarch64-linux-gnu" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/AIX.cmake b/app/src/main/cpp/libcxx/cmake/caches/AIX.cmake
new file mode 100644
index 0000000..76cf177
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/AIX.cmake
@@ -0,0 +1,19 @@
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+set(CMAKE_BUILD_WITH_INSTALL_RPATH ON CACHE BOOL "")
+set(CMAKE_C_FLAGS "-D__LIBC_NO_CPP_MATH_OVERLOADS__" CACHE STRING "")
+set(CMAKE_CXX_FLAGS "-D__LIBC_NO_CPP_MATH_OVERLOADS__" CACHE STRING "")
+set(CMAKE_SHARED_LINKER_FLAGS "-Wl,-G -Wl,-bcdtors:all:-2147483548:s" CACHE STRING "")
+set(CMAKE_AR "/usr/bin/ar" CACHE FILEPATH "")
+
+set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
+set(LIBCXX_ENABLE_ASSERTIONS OFF CACHE BOOL "")
+set(LIBCXX_ABI_VERSION "1" CACHE STRING "")
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXX_CXX_ABI libcxxabi CACHE STRING "")
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(LIBUNWIND_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBUNWIND_ENABLE_STATIC OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/AndroidNDK.cmake b/app/src/main/cpp/libcxx/cmake/caches/AndroidNDK.cmake
new file mode 100644
index 0000000..e08dcae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/AndroidNDK.cmake
@@ -0,0 +1,38 @@
+# Use CMake's built-in Android NDK support. This will also use the compiler from
+# the NDK.
+
+set(CMAKE_ANDROID_NDK "$ENV{ANDROID_NDK_HOME}" CACHE STRING "")
+set(CMAKE_SYSTEM_NAME Android CACHE STRING "")
+
+# Default architecture and Android API level. Selecting a much earlier API may
+# require adding a toybox build to the device's PATH.
+set(CMAKE_ANDROID_ARCH_ABI "x86_64" CACHE STRING "")
+set(CMAKE_SYSTEM_VERSION 21 CACHE STRING "")
+
+# Rename libc++.so to libc++_shared.so to ensure that it doesn't interfere with
+# the libc++.so on the device, then use LD_LIBRARY_PATH to point test
+# executables at the library. Also rename the static library for consistency
+# and to help prevent -lc++ from linking libc++.a.
+set(LIBCXX_SHARED_OUTPUT_NAME c++_shared CACHE STRING "")
+set(LIBCXX_STATIC_OUTPUT_NAME c++_static CACHE STRING "")
+
+# Use a different C++ namespace for the NDK libc++_shared.so to help avoid
+# symbol conflicts on older versions of Android.
+set(LIBCXX_ABI_NAMESPACE __test CACHE STRING "")
+
+# The build doesn't add a suffix to an Android shared object filename, so it
+# writes both a libc++_shared.so ELF file and a libc++_shared.so linker script
+# to the same output path (the script clobbers the binary). Turn off the linker
+# script.
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+
+set(LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
+
+# Use adb to push tests to a locally-connected device (e.g. emulator) and run them.
+set(LIBCXX_TEST_CONFIG "llvm-libc++-android-ndk.cfg.in" CACHE STRING "")
+set(LIBCXXABI_TEST_CONFIG "llvm-libc++abi-android-ndk.cfg.in" CACHE STRING "")
+
+# CMAKE_SOURCE_DIR refers to the "<monorepo>/runtimes" directory.
+set(LIBCXX_EXECUTOR "${CMAKE_SOURCE_DIR}/../libcxx/utils/adb_run.py" CACHE STRING "")
+set(LIBCXXABI_EXECUTOR "${LIBCXX_EXECUTOR}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Apple.cmake b/app/src/main/cpp/libcxx/cmake/caches/Apple.cmake
new file mode 100644
index 0000000..5224e04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Apple.cmake
@@ -0,0 +1,21 @@
+set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "")
+set(CMAKE_POSITION_INDEPENDENT_CODE OFF CACHE BOOL "")
+
+set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
+set(LIBCXX_ENABLE_ASSERTIONS OFF CACHE BOOL "")
+set(LIBCXX_ABI_VERSION "1" CACHE STRING "")
+set(LIBCXX_ENABLE_STATIC ON CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_CXX_ABI libcxxabi CACHE STRING "")
+set(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS ON CACHE BOOL "")
+
+set(LIBCXX_HERMETIC_STATIC_LIBRARY ON CACHE BOOL "")
+set(LIBCXXABI_HERMETIC_STATIC_LIBRARY ON CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_ASSERTIONS OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_FORGIVING_DYNAMIC_CAST ON CACHE BOOL "")
+
+set(LIBCXX_TEST_CONFIG "apple-libc++-shared.cfg.in" CACHE STRING "")
+set(LIBCXXABI_TEST_CONFIG "apple-libc++abi-shared.cfg.in" CACHE STRING "")
+set(LIBCXX_TEST_PARAMS "stdlib=apple-libc++" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Armv7Arm.cmake b/app/src/main/cpp/libcxx/cmake/caches/Armv7Arm.cmake
new file mode 100644
index 0000000..4d18d08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Armv7Arm.cmake
@@ -0,0 +1,4 @@
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(CMAKE_CXX_COMPILER_TARGET "armv7l-linux-gnueabihf" CACHE STRING "")
+set(CMAKE_CXX_FLAGS "-marm" CACHE STRING "")
+set(CMAKE_C_FLAGS "-marm" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Armv7Thumb-noexceptions.cmake b/app/src/main/cpp/libcxx/cmake/caches/Armv7Thumb-noexceptions.cmake
new file mode 100644
index 0000000..71173af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Armv7Thumb-noexceptions.cmake
@@ -0,0 +1,6 @@
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(CMAKE_CXX_COMPILER_TARGET "armv7l-linux-gnueabihf" CACHE STRING "")
+set(CMAKE_CXX_FLAGS "-mthumb" CACHE STRING "")
+set(CMAKE_C_FLAGS "-mthumb" CACHE STRING "")
+set(LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Armv8Arm.cmake b/app/src/main/cpp/libcxx/cmake/caches/Armv8Arm.cmake
new file mode 100644
index 0000000..5055582
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Armv8Arm.cmake
@@ -0,0 +1,4 @@
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(CMAKE_CXX_COMPILER_TARGET "armv8l-linux-gnueabihf" CACHE STRING "")
+set(CMAKE_CXX_FLAGS "-marm" CACHE STRING "")
+set(CMAKE_C_FLAGS "-marm" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Armv8Thumb-noexceptions.cmake b/app/src/main/cpp/libcxx/cmake/caches/Armv8Thumb-noexceptions.cmake
new file mode 100644
index 0000000..316edd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Armv8Thumb-noexceptions.cmake
@@ -0,0 +1,6 @@
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(CMAKE_CXX_COMPILER_TARGET "armv8l-linux-gnueabihf" CACHE STRING "")
+set(CMAKE_CXX_FLAGS "-mthumb" CACHE STRING "")
+set(CMAKE_C_FLAGS "-mthumb" CACHE STRING "")
+set(LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/FreeBSD.cmake b/app/src/main/cpp/libcxx/cmake/caches/FreeBSD.cmake
new file mode 100644
index 0000000..9e66e37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/FreeBSD.cmake
@@ -0,0 +1,9 @@
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+set(CMAKE_POSITION_INDEPENDENT_CODE ON CACHE BOOL "")
+
+set(LIBCXX_ENABLE_ASSERTIONS OFF CACHE BOOL "")
+set(LIBCXX_ABI_VERSION "1" CACHE STRING "")
+set(LIBCXX_ENABLE_STATIC ON CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_CXX_ABI libcxxrt CACHE STRING "")
+set(LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS ON CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-abi-unstable.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-abi-unstable.cmake
new file mode 100644
index 0000000..c87c114
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-abi-unstable.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ABI_UNSTABLE ON CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-asan.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-asan.cmake
new file mode 100644
index 0000000..a86b347
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-asan.cmake
@@ -0,0 +1,3 @@
+set(LLVM_USE_SANITIZER "Address" CACHE STRING "")
+# This is a temporary (hopefully) workaround for an ASan issue (see https://llvm.org/D119410).
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mllvm -asan-use-private-alias=1" CACHE INTERNAL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-assertions.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-assertions.cmake
new file mode 100644
index 0000000..a1d348e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-assertions.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_ENABLE_ASSERTIONS ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_ASSERTIONS ON CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx03.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx03.cmake
new file mode 100644
index 0000000..5edb1c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx03.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "std=c++03" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx11.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx11.cmake
new file mode 100644
index 0000000..f0f89c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx11.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "std=c++11" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx14.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx14.cmake
new file mode 100644
index 0000000..29c688d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx14.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "std=c++14" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx17.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx17.cmake
new file mode 100644
index 0000000..35bac92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx17.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "std=c++17" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx20.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx20.cmake
new file mode 100644
index 0000000..3c44fda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx20.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "std=c++20" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx2b.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx2b.cmake
new file mode 100644
index 0000000..be767dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-cxx2b.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "std=c++2b" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-debug-mode.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-debug-mode.cmake
new file mode 100644
index 0000000..1908da9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-debug-mode.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_DEBUG_MODE ON CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-merged.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-merged.cmake
new file mode 100644
index 0000000..b2e02f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-merged.cmake
@@ -0,0 +1,12 @@
+# Build a libc++ shared library, but merge libc++abi and libunwind into it.
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC_ABI_LIBRARY ON CACHE BOOL "")
+set(LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY ON CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC_UNWINDER ON CACHE BOOL "")
+set(LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY ON CACHE BOOL "")
+
+set(LIBUNWIND_ENABLE_SHARED OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-modules.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-modules.cmake
new file mode 100644
index 0000000..29b4d4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-modules.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "enable_modules=True" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-msan.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-msan.cmake
new file mode 100644
index 0000000..7c948f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-msan.cmake
@@ -0,0 +1 @@
+set(LLVM_USE_SANITIZER "MemoryWithOrigins" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-experimental.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-experimental.cmake
new file mode 100644
index 0000000..f33ed01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-experimental.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_TEST_PARAMS "enable_experimental=False" CACHE STRING "")
+set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-filesystem.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-filesystem.cmake
new file mode 100644
index 0000000..4000f3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-filesystem.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_FILESYSTEM OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-fstream.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-fstream.cmake
new file mode 100644
index 0000000..000d300
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-fstream.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_FSTREAM OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-localization.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-localization.cmake
new file mode 100644
index 0000000..79d6b44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-localization.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_LOCALIZATION OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-random_device.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-random_device.cmake
new file mode 100644
index 0000000..e9b4cc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-random_device.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_RANDOM_DEVICE OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-threads.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-threads.cmake
new file mode 100644
index 0000000..616baef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-threads.cmake
@@ -0,0 +1,3 @@
+set(LIBCXX_ENABLE_THREADS OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_THREADS OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_MONOTONIC_CLOCK OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-unicode.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-unicode.cmake
new file mode 100644
index 0000000..01160bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-unicode.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_UNICODE OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-no-wide-characters.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-wide-characters.cmake
new file mode 100644
index 0000000..728d410
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-no-wide-characters.cmake
@@ -0,0 +1 @@
+set(LIBCXX_ENABLE_WIDE_CHARACTERS OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-noexceptions.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-noexceptions.cmake
new file mode 100644
index 0000000..f0dffef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-noexceptions.cmake
@@ -0,0 +1,2 @@
+set(LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-static.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-static.cmake
new file mode 100644
index 0000000..ed2bf85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-static.cmake
@@ -0,0 +1,3 @@
+set(LIBCXX_ENABLE_SHARED OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
+set(LIBUNWIND_ENABLE_SHARED OFF CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-tsan.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-tsan.cmake
new file mode 100644
index 0000000..a4b599e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-tsan.cmake
@@ -0,0 +1 @@
+set(LLVM_USE_SANITIZER "Thread" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/Generic-ubsan.cmake b/app/src/main/cpp/libcxx/cmake/caches/Generic-ubsan.cmake
new file mode 100644
index 0000000..7ad891e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/Generic-ubsan.cmake
@@ -0,0 +1,2 @@
+set(LLVM_USE_SANITIZER "Undefined" CACHE STRING "")
+set(LIBCXX_ABI_UNSTABLE ON CACHE BOOL "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/MinGW.cmake b/app/src/main/cpp/libcxx/cmake/caches/MinGW.cmake
new file mode 100644
index 0000000..a592709
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/MinGW.cmake
@@ -0,0 +1,13 @@
+set(LIBCXX_CXX_ABI libcxxabi CACHE STRING "")
+set(LIBCXXABI_USE_LLVM_UNWINDER ON CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC_ABI_LIBRARY ON CACHE BOOL "")
+
+set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
+set(LIBCXXABI_USE_COMPILER_RT ON CACHE BOOL "")
+set(LIBUNWIND_USE_COMPILER_RT ON CACHE BOOL "")
+
+# Without this flag, 'long double' (which is 80 bit on x86 mingw, but
+# 64 bit in MSVC) isn't handled correctly in printf.
+set(LIBCXX_EXTRA_SITE_DEFINES "__USE_MINGW_ANSI_STDIO=1" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/README.md b/app/src/main/cpp/libcxx/cmake/caches/README.md
new file mode 100644
index 0000000..60837ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/README.md
@@ -0,0 +1,13 @@
+# libc++ / libc++abi configuration caches
+
+This directory contains CMake caches for the supported configurations of libc++.
+Some of the configurations are specific to a vendor, others are generic and not
+tied to any vendor.
+
+While we won't explicitly work to break configurations not listed here, any
+configuration not listed here is not explicitly supported. If you use or ship
+libc++ under a configuration not listed here, you should work with the libc++
+maintainers to make it into a supported configuration and add it here.
+
+Similarly, adding any new configuration that's not already covered must be
+discussed with the libc++ maintainers as it entails a maintenance burden.
diff --git a/app/src/main/cpp/libcxx/cmake/caches/s390x-ibm-zos-ascii.cmake b/app/src/main/cpp/libcxx/cmake/caches/s390x-ibm-zos-ascii.cmake
new file mode 100644
index 0000000..95b7cbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/s390x-ibm-zos-ascii.cmake
@@ -0,0 +1,22 @@
+# Common
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXX_INCLUDE_TESTS OFF CACHE BOOL "")
+set(LIBCXX_INSTALL_HEADERS OFF CACHE BOOL "")
+set(LIBCXX_INCLUDE_BENCHMARKS OFF CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXXABI_INCLUDE_TESTS OFF CACHE BOOL "")
+
+# Target Specific
+set(LIBCXX_DLL_NAME CRTEQCXS CACHE STRING "")
+set(LIBCXX_SHARED_OUTPUT_NAME "c++_a" CACHE STRING
+    "Output name for the shared libc++ runtime library.")
+set(LIBCXX_CXX_ABI system-libcxxabi CACHE STRING "")
+
+set(LIBCXX_ADDITIONAL_COMPILE_FLAGS "-fzos-le-char-mode=ascii" CACHE STRING "")
+set(LIBCXX_ADDITIONAL_LIBRARIES "-L../s390x-ibm-zos/lib -Wl,../s390x-ibm-zos/lib/libunwind.x" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/s390x-ibm-zos.cmake b/app/src/main/cpp/libcxx/cmake/caches/s390x-ibm-zos.cmake
new file mode 100644
index 0000000..3eaed3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/s390x-ibm-zos.cmake
@@ -0,0 +1,17 @@
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+
+# Common
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXX_INCLUDE_TESTS ON CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXXABI_INCLUDE_TESTS ON CACHE BOOL "")
+
+# Target Specific
+set(LIBCXX_DLL_NAME CRTEQCXE CACHE STRING "")
+
+set(LIBCXXABI_DLL_NAME CRTEQCXA CACHE STRING "")
+set(LIBCXXABI_ADDITIONAL_LIBRARIES "-Wl,lib/libunwind.x" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/s390x32-ibm-zos-ascii.cmake b/app/src/main/cpp/libcxx/cmake/caches/s390x32-ibm-zos-ascii.cmake
new file mode 100644
index 0000000..9ee03e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/s390x32-ibm-zos-ascii.cmake
@@ -0,0 +1,22 @@
+# Common
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXX_INCLUDE_TESTS OFF CACHE BOOL "")
+set(LIBCXX_INSTALL_HEADERS OFF CACHE BOOL "")
+set(LIBCXX_INCLUDE_BENCHMARKS OFF CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_SHARED OFF CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXXABI_INCLUDE_TESTS OFF CACHE BOOL "")
+
+# Target Specific
+set(LIBCXX_DLL_NAME CRTEHCXS CACHE STRING "")
+set(LIBCXX_SHARED_OUTPUT_NAME "c++_a" CACHE STRING
+    "Output name for the shared libc++ runtime library.")
+set(LIBCXX_CXX_ABI system-libcxxabi CACHE STRING "")
+
+set(LIBCXX_ADDITIONAL_COMPILE_FLAGS "-fzos-le-char-mode=ascii" CACHE STRING "")
+set(LIBCXX_ADDITIONAL_LIBRARIES "-L../s390x32-ibm-zos/lib -Wl,../s390x32-ibm-zos/lib/libunwind.x" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/caches/s390x32-ibm-zos.cmake b/app/src/main/cpp/libcxx/cmake/caches/s390x32-ibm-zos.cmake
new file mode 100644
index 0000000..3e57e0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/caches/s390x32-ibm-zos.cmake
@@ -0,0 +1,18 @@
+# Common
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+
+set(LIBCXX_ENABLE_ABI_LINKER_SCRIPT OFF CACHE BOOL "")
+set(LIBCXX_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXX_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXX_INCLUDE_TESTS ON CACHE BOOL "")
+
+set(LIBCXXABI_ENABLE_SHARED ON CACHE BOOL "")
+set(LIBCXXABI_ENABLE_STATIC OFF CACHE BOOL "")
+set(LIBCXXABI_INCLUDE_TESTS ON CACHE BOOL "")
+
+# Target Specific
+set(LIBCXX_DLL_NAME CRTEHCXE CACHE STRING "")
+
+set(LIBCXXABI_DLL_NAME CRTEHCXA CACHE STRING "")
+
+set(LIBCXXABI_ADDITIONAL_LIBRARIES "-Wl,lib/libunwind.x" CACHE STRING "")
diff --git a/app/src/main/cpp/libcxx/cmake/config-ix.cmake b/app/src/main/cpp/libcxx/cmake/config-ix.cmake
new file mode 100644
index 0000000..3bae536
--- /dev/null
+++ b/app/src/main/cpp/libcxx/cmake/config-ix.cmake
@@ -0,0 +1,133 @@
+include(CMakePushCheckState)
+include(CheckLibraryExists)
+include(LLVMCheckCompilerLinkerFlag)
+include(CheckCCompilerFlag)
+include(CheckCXXCompilerFlag)
+include(CheckCSourceCompiles)
+
+# The compiler driver may be implicitly trying to link against libunwind.
+# This is normally ok (libcxx relies on an unwinder), but if libunwind is
+# built in the same cmake invocation as libcxx and we've got
+# LIBCXXABI_USE_LLVM_UNWINDER set, we'd be linking against the just-built
+# libunwind (and the compiler implicit -lunwind wouldn't succeed as the newly
+# built libunwind isn't installed yet). For those cases, it'd be good to
+# link with --uwnindlib=none. Check if that option works.
+llvm_check_compiler_linker_flag(C "--unwindlib=none" CXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG)
+
+if(WIN32 AND NOT MINGW)
+  # NOTE(compnerd) this is technically a lie, there is msvcrt, but for now, lets
+  # let the default linking take care of that.
+  set(LIBCXX_HAS_C_LIB NO)
+else()
+  check_library_exists(c fopen "" LIBCXX_HAS_C_LIB)
+endif()
+
+if (NOT LIBCXX_USE_COMPILER_RT)
+  if(WIN32 AND NOT MINGW)
+    set(LIBCXX_HAS_GCC_S_LIB NO)
+  else()
+    if(ANDROID)
+      check_library_exists(gcc __gcc_personality_v0 "" LIBCXX_HAS_GCC_LIB)
+    else()
+      check_library_exists(gcc_s __gcc_personality_v0 "" LIBCXX_HAS_GCC_S_LIB)
+    endif()
+  endif()
+endif()
+
+# libc++ is using -nostdlib++ at the link step when available,
+# otherwise -nodefaultlibs is used. We want all our checks to also
+# use one of these options, otherwise we may end up with an inconsistency between
+# the flags we think we require during configuration (if the checks are
+# performed without one of those options) and the flags that are actually
+# required during compilation (which has the -nostdlib++ or -nodefaultlibs). libc is
+# required for the link to go through. We remove sanitizers from the
+# configuration checks to avoid spurious link errors.
+
+check_cxx_compiler_flag(-nostdlib++ CXX_SUPPORTS_NOSTDLIBXX_FLAG)
+if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
+  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nostdlib++")
+else()
+  check_c_compiler_flag(-nodefaultlibs C_SUPPORTS_NODEFAULTLIBS_FLAG)
+  if (C_SUPPORTS_NODEFAULTLIBS_FLAG)
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
+  endif()
+endif()
+
+if (CXX_SUPPORTS_NOSTDLIBXX_FLAG OR C_SUPPORTS_NODEFAULTLIBS_FLAG)
+  if (LIBCXX_HAS_C_LIB)
+    list(APPEND CMAKE_REQUIRED_LIBRARIES c)
+  endif ()
+  if (LIBCXX_USE_COMPILER_RT)
+    include(HandleCompilerRT)
+    find_compiler_rt_library(builtins LIBCXX_BUILTINS_LIBRARY
+                             FLAGS ${LIBCXX_COMPILE_FLAGS})
+    if (LIBCXX_BUILTINS_LIBRARY)
+      list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBCXX_BUILTINS_LIBRARY}")
+    else()
+      message(WARNING "Could not find builtins library from libc++")
+    endif()
+  elseif (LIBCXX_HAS_GCC_LIB)
+    list(APPEND CMAKE_REQUIRED_LIBRARIES gcc)
+  elseif (LIBCXX_HAS_GCC_S_LIB)
+    list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
+  endif ()
+  if (MINGW)
+    # Mingw64 requires quite a few "C" runtime libraries in order for basic
+    # programs to link successfully with -nodefaultlibs.
+    if (LIBCXX_USE_COMPILER_RT)
+      set(MINGW_RUNTIME ${LIBCXX_BUILTINS_LIBRARY})
+    else ()
+      set(MINGW_RUNTIME gcc_s gcc)
+    endif()
+    set(MINGW_LIBRARIES mingw32 ${MINGW_RUNTIME} moldname mingwex msvcrt advapi32
+                        shell32 user32 kernel32 mingw32 ${MINGW_RUNTIME}
+                        moldname mingwex msvcrt)
+    list(APPEND CMAKE_REQUIRED_LIBRARIES ${MINGW_LIBRARIES})
+  endif()
+  if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize)
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all")
+  endif ()
+  if (CMAKE_C_FLAGS MATCHES -fsanitize-coverage OR CMAKE_CXX_FLAGS MATCHES -fsanitize-coverage)
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fsanitize-coverage=0")
+  endif ()
+endif ()
+
+# Check compiler pragmas
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  cmake_push_check_state()
+  set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unknown-pragmas")
+  check_c_source_compiles("
+#pragma comment(lib, \"c\")
+int main(void) { return 0; }
+" C_SUPPORTS_COMMENT_LIB_PRAGMA)
+  cmake_pop_check_state()
+endif()
+
+# Check libraries
+if(WIN32 AND NOT MINGW)
+  # TODO(compnerd) do we want to support an emulation layer that allows for the
+  # use of pthread-win32 or similar libraries to emulate pthreads on Windows?
+  set(LIBCXX_HAS_PTHREAD_LIB NO)
+  set(LIBCXX_HAS_M_LIB NO)
+  set(LIBCXX_HAS_RT_LIB NO)
+  set(LIBCXX_HAS_SYSTEM_LIB NO)
+  set(LIBCXX_HAS_ATOMIC_LIB NO)
+elseif(APPLE)
+  check_library_exists(System write "" LIBCXX_HAS_SYSTEM_LIB)
+  set(LIBCXX_HAS_PTHREAD_LIB NO)
+  set(LIBCXX_HAS_M_LIB NO)
+  set(LIBCXX_HAS_RT_LIB NO)
+  set(LIBCXX_HAS_ATOMIC_LIB NO)
+elseif(FUCHSIA)
+  set(LIBCXX_HAS_M_LIB NO)
+  set(LIBCXX_HAS_PTHREAD_LIB NO)
+  set(LIBCXX_HAS_RT_LIB NO)
+  set(LIBCXX_HAS_SYSTEM_LIB NO)
+  check_library_exists(atomic __atomic_fetch_add_8 "" LIBCXX_HAS_ATOMIC_LIB)
+else()
+  check_library_exists(pthread pthread_create "" LIBCXX_HAS_PTHREAD_LIB)
+  check_library_exists(m ccos "" LIBCXX_HAS_M_LIB)
+  check_library_exists(rt clock_gettime "" LIBCXX_HAS_RT_LIB)
+  set(LIBCXX_HAS_SYSTEM_LIB NO)
+  check_library_exists(atomic __atomic_fetch_add_8 "" LIBCXX_HAS_ATOMIC_LIB)
+endif()
diff --git a/app/src/main/cpp/libcxx/docs/AddingNewCIJobs.rst b/app/src/main/cpp/libcxx/docs/AddingNewCIJobs.rst
new file mode 100644
index 0000000..f9428f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/AddingNewCIJobs.rst
@@ -0,0 +1,69 @@
+.. _AddingNewCIJobs:
+
+==================
+Adding New CI Jobs
+==================
+
+.. contents::
+  :local:
+
+Adding The Job
+==============
+
+libc++ uses Buildkite for running its CI. Setting up new CI jobs is easy, and
+these jobs can run either on our existing infrastructure, or on your own.
+
+If you need to run the job on your own machines, please follow the
+`Buildkite guide <https://buildkite.com/docs/agent/v3>`_ to setup your
+own agents. Make sure you tag your agents in a way that you'll be able
+to recognize them when defining your job below. Finally, in order for the
+agent to register itself to Buildkite, it will need a BuildKite Agent token.
+Please contact a maintainer to get your token.
+
+Then, simply add a job to the Buildkite pipeline by editing ``libcxx/utils/ci/buildkite-pipeline.yml``.
+Take a look at how the surrounding jobs are defined and do something similar.
+An example of a job definition is:
+
+.. code-block:: yaml
+
+  - label: "C++11"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx11"
+    artifact_paths:
+      - "**/test-results.xml"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      [...]
+
+If you create your own agents, put them in the ``libcxx-builders`` queue and
+use agent tags to allow targetting your agents from the Buildkite pipeline
+config appropriately.
+
+We try to keep the pipeline definition file as simple as possible, and to
+keep any script used for CI inside ``libcxx/utils/ci``. This ensures that
+it's possible to reproduce CI issues locally with ease, understanding of
+course that some setups may require access to special hardware that is not
+available.
+
+Finally, add your contact info to ``libcxx/utils/ci/BOT_OWNERS.txt``. This will
+be used to contact you when there are issues with the bot.
+
+Testing Your New Job
+====================
+
+Testing your new job is easy -- once your agent is set up (if any), just open
+a code review and the libc++ CI pipeline will run, including any changes you
+might have made to the pipeline definition itself.
+
+Service Level Agreement
+=======================
+
+To keep the libc++ CI useful for everyone, we aim for a quick turnaround time
+for all CI jobs. This allows the overall pipeline to finish in a reasonable
+amount of time, which is important because it directly affects our development
+velocity. We also try to make sure that jobs run on reliable infrastructure in
+order to avoid flaky failures, which reduce the value of CI for everyone.
+
+We may be reluctant to add and support CI jobs that take a long time to finish
+or that are too flaky.
diff --git a/app/src/main/cpp/libcxx/docs/BuildingLibcxx.rst b/app/src/main/cpp/libcxx/docs/BuildingLibcxx.rst
new file mode 100644
index 0000000..59c695e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/BuildingLibcxx.rst
@@ -0,0 +1,572 @@
+.. _BuildingLibcxx:
+
+===============
+Building libc++
+===============
+
+.. contents::
+  :local:
+
+.. _build instructions:
+
+The instructions on this page are aimed at vendors who ship libc++ as part of an
+operating system distribution, a toolchain or similar shipping vehicules. If you
+are a user merely trying to use libc++ in your program, you most likely want to
+refer to your vendor's documentation, or to the general documentation for using
+libc++ :ref:`here <using-libcxx>`.
+
+.. warning::
+  If your operating system already provides libc++, it is important to be careful
+  not to replace it. Replacing your system's libc++ installation could render it
+  non-functional. Use the CMake option ``CMAKE_INSTALL_PREFIX`` to select a safe
+  place to install libc++.
+
+
+The default build
+=================
+
+The default way of building libc++, libc++abi and libunwind is to root the CMake
+invocation at ``<monorepo>/runtimes``. While those projects are under the LLVM
+umbrella, they are different in nature from other build tools, so it makes sense
+to treat them as a separate set of entities. The default build can be achieved
+with the following CMake invocation:
+
+.. code-block:: bash
+
+  $ git clone https://github.com/llvm/llvm-project.git
+  $ cd llvm-project
+  $ mkdir build
+  $ cmake -G Ninja -S runtimes -B build -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" # Configure
+  $ ninja -C build cxx cxxabi unwind                                                        # Build
+  $ ninja -C build check-cxx check-cxxabi check-unwind                                      # Test
+  $ ninja -C build install-cxx install-cxxabi install-unwind                                # Install
+
+.. note::
+  See :ref:`CMake Options` below for more configuration options.
+
+After building the various ``install-XXX`` targets, shared libraries for libc++, libc++abi and
+libunwind should now be present in ``<CMAKE_INSTALL_PREFIX>/lib``, and headers in
+``<CMAKE_INSTALL_PREFIX>/include/c++/v1``. See :ref:`using an alternate libc++ installation
+<alternate libcxx>` for information on how to use this libc++ over the default one.
+
+In the default configuration, the runtimes will be built using the compiler available by default
+on your system. Of course, you can change what compiler is being used with the usual CMake
+variables. If you wish to build the runtimes from a just-built Clang, the bootstrapping build
+explained below makes this task easy.
+
+
+Bootstrapping build
+===================
+
+It is possible to build Clang and then build the runtimes using that just-built compiler in a
+single CMake invocation. This is usually the correct way to build the runtimes when putting together
+a toolchain, or when the system compiler is not adequate to build them (too old, unsupported, etc.).
+To do this, use the following CMake invocation, and in particular notice how we're now rooting the
+CMake invocation at ``<monorepo>/llvm``:
+
+.. code-block:: bash
+
+  $ mkdir build
+  $ cmake -G Ninja -S llvm -B build -DLLVM_ENABLE_PROJECTS="clang"                      \  # Configure
+                                    -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" \
+                                    -DLLVM_RUNTIME_TARGETS="<target-triple>"
+  $ ninja -C build runtimes                                                                # Build
+  $ ninja -C build check-runtimes                                                          # Test
+  $ ninja -C build install-runtimes                                                        # Install
+
+.. note::
+  This type of build is also commonly called a "Runtimes build", but we would like to move
+  away from that terminology, which is too confusing.
+
+Support for Windows
+===================
+
+libcxx supports being built with clang-cl, but not with MSVC's cl.exe, as
+cl doesn't support the ``#include_next`` extension. Furthermore, VS 2017 or
+newer (19.14) is required.
+
+libcxx also supports being built with clang targeting MinGW environments.
+
+CMake + Visual Studio
+---------------------
+
+Building with Visual Studio currently does not permit running tests. However,
+it is the simplest way to build.
+
+.. code-block:: batch
+
+  > cmake -G "Visual Studio 16 2019" -S runtimes -B build ^
+          -T "ClangCL"                                    ^
+          -DLLVM_ENABLE_RUNTIMES=libcxx                   ^
+          -DLIBCXX_ENABLE_SHARED=YES                      ^
+          -DLIBCXX_ENABLE_STATIC=NO
+  > cmake --build build
+
+CMake + ninja (MSVC)
+--------------------
+
+Building with ninja is required for development to enable tests.
+A couple of tests require Bash to be available, and a couple dozens
+of tests require other posix tools (cp, grep and similar - LLVM's tests
+require the same). Without those tools the vast majority of tests
+can still be ran successfully.
+
+If Git for Windows is available, that can be used to provide the bash
+shell by adding the right bin directory to the path, e.g.
+``set PATH=%PATH%;C:\Program Files\Git\usr\bin``.
+
+Alternatively, one can also choose to run the whole build in a MSYS2
+shell. That can be set up e.g. by starting a Visual Studio Tools Command
+Prompt (for getting the environment variables pointing to the headers and
+import libraries), and making sure that clang-cl is available in the
+path. From there, launch an MSYS2 shell via e.g.
+``C:\msys64\msys2_shell.cmd -full-path -mingw64`` (preserving the earlier
+environment, allowing the MSVC headers/libraries and clang-cl to be found).
+
+In either case, then run:
+
+.. code-block:: batch
+
+  > cmake -G Ninja -S runtimes -B build                                               ^
+          -DCMAKE_C_COMPILER=clang-cl                                                 ^
+          -DCMAKE_CXX_COMPILER=clang-cl                                               ^
+          -DLLVM_ENABLE_RUNTIMES=libcxx
+  > ninja -C build cxx
+  > ninja -C build check-cxx
+
+If you are running in an MSYS2 shell and you have installed the
+MSYS2-provided clang package (which defaults to a non-MSVC target), you
+should add e.g. ``-DCMAKE_CXX_COMPILER_TARGET=x86_64-windows-msvc`` (replacing
+``x86_64`` with the architecture you're targeting) to the ``cmake`` command
+line above. This will instruct ``check-cxx`` to use the right target triple
+when invoking ``clang++``.
+
+Also note that if not building in Release mode, a failed assert in the tests
+pops up a blocking dialog box, making it hard to run a larger number of tests.
+
+CMake + ninja (MinGW)
+---------------------
+
+libcxx can also be built in MinGW environments, e.g. with the MinGW
+compilers in MSYS2. This requires clang to be available (installed with
+e.g. the ``mingw-w64-x86_64-clang`` package), together with CMake and ninja.
+
+.. code-block:: bash
+
+  > cmake -G Ninja -S runtimes -B build                                               \
+          -DCMAKE_C_COMPILER=clang                                                    \
+          -DCMAKE_CXX_COMPILER=clang++                                                \
+          -DLLVM_ENABLE_RUNTIMES=libcxx                                               \
+          -DLIBCXX_CXX_ABI=libstdc++
+  > ninja -C build cxx
+  > cp /mingw64/bin/{libstdc++-6,libgcc_s_seh-1,libwinpthread-1}.dll lib
+  > ninja -C build check-cxx
+
+As this build configuration ends up depending on a couple other DLLs that
+aren't available in path while running tests, copy them into the same
+directory as the tested libc++ DLL.
+
+(Building a libc++ that depends on libstdc++ isn't necessarily a config one
+would want to deploy, but it simplifies the config for testing purposes.)
+
+.. _`libc++abi`: http://libcxxabi.llvm.org/
+
+
+.. _CMake Options:
+
+CMake Options
+=============
+
+Here are some of the CMake variables that are used often, along with a
+brief explanation and LLVM-specific notes. For full documentation, check the
+CMake docs or execute ``cmake --help-variable VARIABLE_NAME``.
+
+**CMAKE_BUILD_TYPE**:STRING
+  Sets the build type for ``make`` based generators. Possible values are
+  Release, Debug, RelWithDebInfo and MinSizeRel. On systems like Visual Studio
+  the user sets the build type with the IDE settings.
+
+**CMAKE_INSTALL_PREFIX**:PATH
+  Path where LLVM will be installed if "make install" is invoked or the
+  "INSTALL" target is built.
+
+**CMAKE_CXX_COMPILER**:STRING
+  The C++ compiler to use when building and testing libc++.
+
+
+.. _libcxx-specific options:
+
+libc++ specific options
+-----------------------
+
+.. option:: LIBCXX_INSTALL_LIBRARY:BOOL
+
+  **Default**: ``ON``
+
+  Toggle the installation of the library portion of libc++.
+
+.. option:: LIBCXX_INSTALL_HEADERS:BOOL
+
+  **Default**: ``ON``
+
+  Toggle the installation of the libc++ headers.
+
+.. option:: LIBCXX_ENABLE_ASSERTIONS:BOOL
+
+  **Default**: ``OFF``
+
+  Build libc++ with assertions enabled in the compiled library, and enable assertions
+  by default when building user code as well. Assertions can be turned off by users
+  by defining ``_LIBCPP_ENABLE_ASSERTIONS=0``. For details, see
+  :ref:`the documentation <assertions-mode>`.
+
+.. option:: LIBCXX_ENABLE_SHARED:BOOL
+
+  **Default**: ``ON``
+
+  Build libc++ as a shared library. Either `LIBCXX_ENABLE_SHARED` or
+  `LIBCXX_ENABLE_STATIC` has to be enabled.
+
+.. option:: LIBCXX_ENABLE_STATIC:BOOL
+
+  **Default**: ``ON``
+
+  Build libc++ as a static library. Either `LIBCXX_ENABLE_SHARED` or
+  `LIBCXX_ENABLE_STATIC` has to be enabled.
+
+.. option:: LIBCXX_LIBDIR_SUFFIX:STRING
+
+  Extra suffix to append to the directory where libraries are to be installed.
+  This option overrides `LLVM_LIBDIR_SUFFIX`.
+
+.. option:: LIBCXX_HERMETIC_STATIC_LIBRARY:BOOL
+
+  **Default**: ``OFF``
+
+  Do not export any symbols from the static libc++ library.
+  This is useful when the static libc++ library is being linked into shared
+  libraries that may be used in with other shared libraries that use different
+  C++ library. We want to avoid exporting any libc++ symbols in that case.
+
+.. option:: LIBCXX_ENABLE_FILESYSTEM:BOOL
+
+   **Default**: ``ON`` except on Windows when using MSVC.
+
+   This option can be used to enable or disable the filesystem components on
+   platforms that may not support them. For example on Windows when using MSVC.
+
+.. option:: LIBCXX_ENABLE_WIDE_CHARACTERS:BOOL
+
+   **Default**: ``ON``
+
+   This option can be used to disable support for ``wchar_t`` in the library. It also
+   allows the library to work on top of a C Standard Library that does not provide
+   support for ``wchar_t``. This is especially useful in embedded settings where
+   C Standard Libraries don't always provide all the usual bells and whistles.
+
+.. option:: LIBCXX_INSTALL_LIBRARY_DIR:PATH
+
+  **Default**: ``lib${LIBCXX_LIBDIR_SUFFIX}``
+
+  Path where built libc++ libraries should be installed. If a relative path,
+  relative to ``CMAKE_INSTALL_PREFIX``.
+
+.. option:: LIBCXX_INSTALL_INCLUDE_DIR:PATH
+
+  **Default**: ``include/c++/v1``
+
+  Path where target-agnostic libc++ headers should be installed. If a relative
+  path, relative to ``CMAKE_INSTALL_PREFIX``.
+
+.. option:: LIBCXX_INSTALL_INCLUDE_TARGET_DIR:PATH
+
+  **Default**: ``include/c++/v1`` or
+  ``include/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1``
+
+  Path where target-specific libc++ headers should be installed. If a relative
+  path, relative to ``CMAKE_INSTALL_PREFIX``.
+
+.. option:: LIBCXX_SHARED_OUTPUT_NAME:STRING
+
+  **Default**: ``c++``
+
+  Output name for the shared libc++ runtime library.
+
+.. option:: LIBCXX_ADDITIONAL_COMPILE_FLAGS:STRING
+
+  **Default**: ``""``
+
+  Additional Compile only flags which can be provided in cache.
+
+.. option:: LIBCXX_ADDITIONAL_LIBRARIES:STRING
+
+  **Default**: ``""``
+
+  Additional libraries libc++ is linked to which can be provided in cache.
+
+
+.. _ABI Library Specific Options:
+
+ABI Library Specific Options
+----------------------------
+
+.. option:: LIBCXX_CXX_ABI:STRING
+
+  **Values**: ``none``, ``libcxxabi``, ``system-libcxxabi``, ``libcxxrt``, ``libstdc++``, ``libsupc++``, ``vcruntime``.
+
+  Select the ABI library to build libc++ against.
+
+.. option:: LIBCXX_CXX_ABI_INCLUDE_PATHS:PATHS
+
+  Provide additional search paths for the ABI library headers.
+
+.. option:: LIBCXX_CXX_ABI_LIBRARY_PATH:PATH
+
+  Provide the path to the ABI library that libc++ should link against. This is only
+  useful when linking against an out-of-tree ABI library.
+
+.. option:: LIBCXX_ENABLE_STATIC_ABI_LIBRARY:BOOL
+
+  **Default**: ``OFF``
+
+  If this option is enabled, libc++ will try and link the selected ABI library
+  statically.
+
+.. option:: LIBCXX_ENABLE_ABI_LINKER_SCRIPT:BOOL
+
+  **Default**: ``ON`` by default on UNIX platforms other than Apple unless
+  'LIBCXX_ENABLE_STATIC_ABI_LIBRARY' is ON. Otherwise the default value is ``OFF``.
+
+  This option generate and installs a linker script as ``libc++.so`` which
+  links the correct ABI library.
+
+.. option:: LIBCXXABI_USE_LLVM_UNWINDER:BOOL
+
+  **Default**: ``OFF``
+
+  Build and use the LLVM unwinder. Note: This option can only be used when
+  libc++abi is the C++ ABI library used.
+
+.. option:: LIBCXXABI_ADDITIONAL_COMPILE_FLAGS:STRING
+
+  **Default**: ``""``
+
+  Additional Compile only flags which can be provided in cache.
+
+.. option:: LIBCXXABI_ADDITIONAL_LIBRARIES:STRING
+
+  **Default**: ``""``
+
+  Additional libraries libc++abi is linked to which can be provided in cache.
+
+
+libc++ Feature Options
+----------------------
+
+.. option:: LIBCXX_ENABLE_EXCEPTIONS:BOOL
+
+  **Default**: ``ON``
+
+  Build libc++ with exception support.
+
+.. option:: LIBCXX_ENABLE_RTTI:BOOL
+
+  **Default**: ``ON``
+
+  Build libc++ with run time type information.
+
+.. option:: LIBCXX_INCLUDE_TESTS:BOOL
+
+  **Default**: ``ON`` (or value of ``LLVM_INCLUDE_TESTS``)
+
+  Build the libc++ tests.
+
+.. option:: LIBCXX_INCLUDE_BENCHMARKS:BOOL
+
+  **Default**: ``ON``
+
+  Build the libc++ benchmark tests and the Google Benchmark library needed
+  to support them.
+
+.. option:: LIBCXX_BENCHMARK_TEST_ARGS:STRING
+
+  **Default**: ``--benchmark_min_time=0.01``
+
+  A semicolon list of arguments to pass when running the libc++ benchmarks using the
+  ``check-cxx-benchmarks`` rule. By default we run the benchmarks for a very short amount of time,
+  since the primary use of ``check-cxx-benchmarks`` is to get test and sanitizer coverage, not to
+  get accurate measurements.
+
+.. option:: LIBCXX_BENCHMARK_NATIVE_STDLIB:STRING
+
+  **Default**:: ``""``
+
+  **Values**:: ``libc++``, ``libstdc++``
+
+  Build the libc++ benchmark tests and Google Benchmark library against the
+  specified standard library on the platform. On Linux this can be used to
+  compare libc++ to libstdc++ by building the benchmark tests against both
+  standard libraries.
+
+.. option:: LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN:STRING
+
+  Use the specified GCC toolchain and standard library when building the native
+  stdlib benchmark tests.
+
+
+libc++ ABI Feature Options
+--------------------------
+
+The following options allow building libc++ for a different ABI version.
+
+.. option:: LIBCXX_ABI_VERSION:STRING
+
+  **Default**: ``1``
+
+  Defines the target ABI version of libc++.
+
+.. option:: LIBCXX_ABI_UNSTABLE:BOOL
+
+  **Default**: ``OFF``
+
+  Build the "unstable" ABI version of libc++. Includes all ABI changing features
+  on top of the current stable version.
+
+.. option:: LIBCXX_ABI_NAMESPACE:STRING
+
+  **Default**: ``__n`` where ``n`` is the current ABI version.
+
+  This option defines the name of the inline ABI versioning namespace. It can be used for building
+  custom versions of libc++ with unique symbol names in order to prevent conflicts or ODR issues
+  with other libc++ versions.
+
+  .. warning::
+    When providing a custom namespace, it's the user's responsibility to ensure the name won't cause
+    conflicts with other names defined by libc++, both now and in the future. In particular, inline
+    namespaces of the form ``__[0-9]+`` could cause conflicts with future versions of the library,
+    and so should be avoided.
+
+.. option:: LIBCXX_ABI_DEFINES:STRING
+
+  **Default**: ``""``
+
+  A semicolon-separated list of ABI macros to persist in the site config header.
+  See ``include/__config`` for the list of ABI macros.
+
+
+.. _LLVM-specific variables:
+
+LLVM-specific options
+---------------------
+
+.. option:: LLVM_LIBDIR_SUFFIX:STRING
+
+  Extra suffix to append to the directory where libraries are to be
+  installed. On a 64-bit architecture, one could use ``-DLLVM_LIBDIR_SUFFIX=64``
+  to install libraries to ``/usr/lib64``.
+
+.. option:: LLVM_BUILD_32_BITS:BOOL
+
+  Build 32-bits executables and libraries on 64-bits systems. This option is
+  available only on some 64-bits Unix systems. Defaults to OFF.
+
+.. option:: LLVM_LIT_ARGS:STRING
+
+  Arguments given to lit.  ``make check`` and ``make clang-test`` are affected.
+  By default, ``'-sv --no-progress-bar'`` on Visual C++ and Xcode, ``'-sv'`` on
+  others.
+
+
+Using Alternate ABI libraries
+=============================
+
+In order to implement various features like exceptions, RTTI, ``dynamic_cast`` and
+more, libc++ requires what we refer to as an ABI library. Typically, that library
+implements the `Itanium C++ ABI <https://itanium-cxx-abi.github.io/cxx-abi/abi.html>`_.
+
+By default, libc++ uses libc++abi as an ABI library. However, it is possible to use
+other ABI libraries too.
+
+Using libsupc++ on Linux
+------------------------
+
+You will need libstdc++ in order to provide libsupc++.
+
+Figure out where the libsupc++ headers are on your system. On Ubuntu this
+is ``/usr/include/c++/<version>`` and ``/usr/include/c++/<version>/<target-triple>``
+
+You can also figure this out by running
+
+.. code-block:: bash
+
+  $ echo | g++ -Wp,-v -x c++ - -fsyntax-only
+  ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
+  ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../x86_64-linux-gnu/include"
+  #include "..." search starts here:
+  #include &lt;...&gt; search starts here:
+  /usr/include/c++/4.7
+  /usr/include/c++/4.7/x86_64-linux-gnu
+  /usr/include/c++/4.7/backward
+  /usr/lib/gcc/x86_64-linux-gnu/4.7/include
+  /usr/local/include
+  /usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed
+  /usr/include/x86_64-linux-gnu
+  /usr/include
+  End of search list.
+
+Note that the first two entries happen to be what we are looking for. This
+may not be correct on all platforms.
+
+We can now run CMake:
+
+.. code-block:: bash
+
+  $ cmake -G Ninja -S runtimes -B build       \
+    -DLLVM_ENABLE_RUNTIMES="libcxx"           \
+    -DLIBCXX_CXX_ABI=libstdc++                \
+    -DLIBCXX_CXX_ABI_INCLUDE_PATHS="/usr/include/c++/4.7/;/usr/include/c++/4.7/x86_64-linux-gnu/"
+  $ ninja -C build install-cxx
+
+
+You can also substitute ``-DLIBCXX_CXX_ABI=libsupc++``
+above, which will cause the library to be linked to libsupc++ instead
+of libstdc++, but this is only recommended if you know that you will
+never need to link against libstdc++ in the same executable as libc++.
+GCC ships libsupc++ separately but only as a static library.  If a
+program also needs to link against libstdc++, it will provide its
+own copy of libsupc++ and this can lead to subtle problems.
+
+Using libcxxrt on Linux
+------------------------
+
+You will need to keep the source tree of `libcxxrt`_ available
+on your build machine and your copy of the libcxxrt shared library must
+be placed where your linker will find it.
+
+We can now run CMake like:
+
+.. code-block:: bash
+
+  $ cmake -G Ninja -S runtimes -B build                               \
+          -DLLVM_ENABLE_RUNTIMES="libcxx"                             \
+          -DLIBCXX_CXX_ABI=libcxxrt                                   \
+          -DLIBCXX_CXX_ABI_INCLUDE_PATHS=path/to/libcxxrt-sources/src
+  $ ninja -C build install-cxx
+
+Unfortunately you can't simply run clang with "-stdlib=libc++" at this point, as
+clang is set up to link for libc++ linked to libsupc++.  To get around this
+you'll have to set up your linker yourself (or patch clang).  For example,
+
+.. code-block:: bash
+
+  $ clang++ -stdlib=libc++ helloworld.cpp \
+            -nodefaultlibs -lc++ -lcxxrt -lm -lc -lgcc_s -lgcc
+
+Alternately, you could just add libcxxrt to your libraries list, which in most
+situations will give the same result:
+
+.. code-block:: bash
+
+  $ clang++ -stdlib=libc++ helloworld.cpp -lcxxrt
+
+.. _`libcxxrt`: https://github.com/libcxxrt/libcxxrt
diff --git a/app/src/main/cpp/libcxx/docs/CMakeLists.txt b/app/src/main/cpp/libcxx/docs/CMakeLists.txt
new file mode 100644
index 0000000..d679761
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/CMakeLists.txt
@@ -0,0 +1,9 @@
+
+if (LLVM_ENABLE_SPHINX)
+  include(AddSphinxTarget)
+  if (SPHINX_FOUND)
+    if (${SPHINX_OUTPUT_HTML})
+      add_sphinx_target(html libcxx)
+    endif()
+  endif()
+endif()
diff --git a/app/src/main/cpp/libcxx/docs/Contributing.rst b/app/src/main/cpp/libcxx/docs/Contributing.rst
new file mode 100644
index 0000000..186ac66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Contributing.rst
@@ -0,0 +1,221 @@
+.. _ContributingToLibcxx:
+
+======================
+Contributing to libc++
+======================
+
+This file contains notes about various tasks and processes specific to contributing
+to libc++. If this is your first time contributing, please also read `this document
+<https://www.llvm.org/docs/Contributing.html>`__ on general rules for contributing to LLVM.
+
+For libc++, please make sure you follow `these instructions <https://www.llvm.org/docs/Phabricator.html#requesting-a-review-via-the-command-line>`_
+for submitting a code review from the command-line using ``arc``, since we have some
+automation (e.g. CI) that depends on the review being submitted that way.
+
+If you plan on contributing to libc++, it can be useful to join the ``#libcxx`` channel
+on `LLVM's Discord server <https://discord.gg/jzUbyP26tQ>`__.
+
+Looking for pre-existing reviews
+================================
+
+Before you start working on any feature, please take a look at the open reviews
+to avoid duplicating someone else's work. You can do that by going to the website
+where code reviews are held, `Differential <https://reviews.llvm.org/differential>`__,
+and clicking on ``Libc++ Open Reviews`` in the sidebar to the left. If you see
+that your feature is already being worked on, please consider chiming in instead
+of duplicating work!
+
+Pre-commit check list
+=====================
+
+Before committing or creating a review, please go through this check-list to make
+sure you don't forget anything:
+
+- Do you have tests for every public class and/or function you're adding or modifying?
+- Did you update the synopsis of the relevant headers?
+- Did you update the relevant files to track implementation status (in ``docs/Status/``)?
+- Did you mark all functions and type declarations with the :ref:`proper visibility macro <visibility-macros>`?
+- If you added a header:
+
+  - Did you add it to ``include/module.modulemap.in``?
+  - Did you add it to ``include/CMakeLists.txt``?
+  - If it's a public header, did you add a test under ``test/libcxx`` that the new header defines ``_LIBCPP_VERSION``? See ``test/libcxx/algorithms/version.pass.cpp`` for an example. NOTE: This should be automated.
+  - If it's a public header, did you update ``utils/generate_header_inclusion_tests.py``?
+
+- Did you add the relevant feature test macro(s) for your feature? Did you update the ``generate_feature_test_macro_components.py`` script with it?
+- Did you run the ``libcxx-generate-files`` target and verify its output?
+
+The review process
+==================
+
+After uploading your patch, you should see that the "libc++" review group is automatically
+added as a reviewer for your patch. Once the group is marked as having approved your patch,
+you can commit it. However, if you get an approval very quickly for a significant patch,
+please try to wait a couple of business days before committing to give the opportunity for
+other reviewers to chime in. If you need someone else to commit the patch for you, please
+mention it and provide your ``Name <email@domain>`` for us to attribute the commit properly.
+
+Note that the rule for accepting as the "libc++" review group is to wait for two members
+of the group to have approved the patch, excluding the patch author. This is not a hard
+rule -- for very simple patches, use your judgement. The `"libc++" review group <https://reviews.llvm.org/project/members/64/>`__
+consists of frequent libc++ contributors with a good understanding of the project's
+guidelines -- if you would like to be added to it, please reach out on Discord.
+
+Post-release check list
+=======================
+
+After branching for an LLVM release:
+
+1. Update ``_LIBCPP_VERSION`` in ``libcxx/include/__config``
+2. Update the version number in ``libcxx/docs/conf.py``
+3. Update ``_LIBCPPABI_VERSION`` in ``libcxxabi/include/cxxabi.h``
+4. Update ``_LIBUNWIND_VERSION`` in ``libunwind/include/__libunwind_config.h``
+5. Update the list of supported clang versions in ``libcxx/docs/index.rst``
+6. Remove the in-progress warning from ``libcxx/docs/ReleaseNotes.rst``
+
+Exporting new symbols from the library
+======================================
+
+When exporting new symbols from libc++, you must update the ABI lists located in ``lib/abi``.
+To test whether the lists are up-to-date, please run the target ``check-cxx-abilist``.
+To regenerate the lists, use the target ``generate-cxx-abilist``.
+The ABI lists must be updated for all supported platforms; currently Linux and
+Apple.  If you don't have access to one of these platforms, you can download an
+updated list from the failed build at
+`Buildkite <https://buildkite.com/llvm-project/libcxx-ci>`__.
+Look for the failed build and select the ``artifacts`` tab. There, download the
+abilist for the platform, e.g.:
+
+* C++<version>.
+* MacOS X86_64 and MacOS arm64 for the Apple platform.
+
+
+Pre-commit CI
+=============
+
+Introduction
+------------
+
+Unlike most parts of the LLVM project, libc++ uses a pre-commit CI [#]_. This
+CI is hosted on `Buildkite <https://buildkite.com/llvm-project/libcxx-ci>`__ and
+the build results are visible in the review on Phabricator. Please make sure
+the CI is green before committing a patch.
+
+The CI tests libc++ for all :ref:`supported platforms <SupportedPlatforms>`.
+The build is started for every diff uploaded to Phabricator. A complete CI run
+takes approximately one hour. To reduce the load:
+
+* The build is cancelled when a new diff for the same revision is uploaded.
+* The build is done in several stages and cancelled when a stage fails.
+
+Typically, the libc++ jobs use a Ubuntu Docker image. This image contains
+recent `nightly builds <https://apt.llvm.org>`__ of all supported versions of
+Clang and the current version of the ``main`` branch. These versions of Clang
+are used to build libc++ and execute its tests.
+
+Unless specified otherwise, the configurations:
+
+* use a nightly build of the ``main`` branch of Clang,
+* execute the tests using the language C++<latest>. This is the version
+  "developed" by the C++ committee.
+
+.. note:: Updating the Clang nightly builds in the Docker image is a manual
+   process and is done at an irregular interval on purpose. When you need to
+   have the latest nightly build to test recent Clang changes, ask in the
+   ``#libcxx`` channel on `LLVM's Discord server
+   <https://discord.gg/jzUbyP26tQ>`__.
+
+.. [#] There's `LLVM Dev Meeting talk <https://www.youtube.com/watch?v=B7gB6van7Bw>`__
+   explaining the benefits of libc++'s pre-commit CI.
+
+Builds
+------
+
+Below is a short description of the most interesting CI builds [#]_:
+
+* ``Format`` runs ``clang-format`` and uploads its output as an artifact. At the
+  moment this build is a soft error and doesn't fail the build.
+* ``Generated output`` runs the ``libcxx-generate-files`` build target and
+  tests for non-ASCII characters in libcxx. Some files are excluded since they
+  use Unicode, mainly tests. The output of these commands are uploaded as
+  artifact.
+* ``Documentation`` builds the documentation. (This is done early in the build
+  process since it is cheap to run.)
+* ``C++<version>`` these build steps test the various C++ versions, making sure all
+  C++ language versions work with the changes made.
+* ``Clang <version>`` these build steps test whether the changes work with all
+  supported Clang versions.
+* ``Booststrapping build`` builds Clang using the revision of the patch and
+  uses that Clang version to build and test libc++. This validates the current
+  Clang and lib++ are compatible.
+
+  When a crash occurs in this build, the crash reproducer is available as an
+  artifact.
+
+* ``Modular build`` tests libc++ using Clang modules [#]_.
+* ``GCC <version>`` tests libc++ with the latest stable GCC version. Only C++11
+  and the latest C++ version are tested.
+* ``Santitizers`` tests libc++ using the Clang sanitizers.
+* ``Parts disabled`` tests libc++ with certain libc++ features disabled.
+* ``Windows`` tests libc++ using MinGW and clang-cl.
+* ``Apple`` tests libc++ on MacOS.
+* ``ARM`` tests libc++ on various Linux ARM platforms.
+* ``AIX`` tests libc++ on AIX.
+
+.. [#] Not all all steps are listed: steps are added and removed when the need
+   arises.
+.. [#] Clang modules are not the same as C++20's modules.
+
+Infrastructure
+--------------
+
+All files of the CI infrastructure are in the directory ``libcxx/utils/ci``.
+Note that quite a bit of this infrastructure is heavily Linux focused. This is
+the platform used by most of libc++'s Buildkite runners and developers.
+
+Dockerfile
+~~~~~~~~~~
+
+Contains the Docker image for the Ubuntu CI. Because the same Docker image is
+used for the ``main`` and ``release`` branch, it should contain no hard-coded
+versions.  It contains the used versions of Clang, various clang-tools,
+GCC, and CMake.
+
+.. note:: This image is pulled from Docker hub and not rebuild when changing
+   the Dockerfile.
+
+run-buildbot-container
+~~~~~~~~~~~~~~~~~~~~~~
+
+Helper script that pulls and runs the Docker image. This image mounts the LLVM
+monorepo at ``/llvm``. This can be used to test with compilers not available on
+your system.
+
+run-buildbot
+~~~~~~~~~~~~
+
+Contains the buld script executed on Buildkite. This script can be executed
+locally or inside ``run-buildbot-container``. The script must be called with
+the target to test. For example, ``run-buildbot generic-cxx20`` will build
+libc++ and test it using C++20.
+
+.. warning:: This script will overwrite the directory ``<llvm-root>/build/XX``
+  where ``XX`` is the target of ``run-buildbot``.
+
+This script contains as little version information as possible. This makes it
+easy to use the script with a different compiler. This allows testing a
+combination not in the libc++ CI. It can be used to add a new (temporary)
+job to the CI. For example, testing the C++17 build with Clang-14 can be done
+like:
+
+.. code-block:: bash
+
+  CC=clang-14 CXX=clang++-14 run-buildbot generic-cxx17
+
+buildkite-pipeline.yml
+~~~~~~~~~~~~~~~~~~~~~~
+
+Contains the jobs executed in the CI. This file contains the version
+information of the jobs being executed. Since this script differs between the
+``main`` and ``release`` branch, both branches can use different compiler
+versions.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/ABIVersioning.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/ABIVersioning.rst
new file mode 100644
index 0000000..3b82f3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/ABIVersioning.rst
@@ -0,0 +1,24 @@
+
+====================
+Libc++ ABI stability
+====================
+
+Libc++ aims to preserve a stable ABI to avoid subtle bugs when code built under the old ABI
+is linked with code built under the new ABI. At the same time, libc++ wants to make
+ABI-breaking improvements and bugfixes in scenarios where the user doesn't mind ABI breaks.
+
+To support both cases, libc++ allows specifying an ABI version at
+build time. The version is defined with CMake option ``LIBCXX_ABI_VERSION``.
+Currently supported values are ``1`` (the stable default)
+and ``2`` (the unstable "next" version). At some point "ABI version 2" will be
+frozen and new ABI-breaking changes will start being applied to version ``3``;
+but this has not happened yet.
+
+To always use the most cutting-edge, most unstable ABI (which is currently ``2``
+but at some point will become ``3``), set the CMake option ``LIBCXX_ABI_UNSTABLE``.
+
+Internally, each ABI-changing feature is placed under its own C++ macro,
+``_LIBCPP_ABI_XXX``. These macros' definitions are controlled by the C++ macro
+``_LIBCPP_ABI_VERSION``, which is controlled by the ``LIBCXX_ABI_VERSION`` set
+at build time. Libc++ does not intend users to interact with these C++ macros
+directly.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/AtomicDesign.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/AtomicDesign.rst
new file mode 100644
index 0000000..4b28ab2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/AtomicDesign.rst
@@ -0,0 +1,797 @@
+
+====================
+``<atomic>`` Design
+====================
+
+There were originally 3 designs under consideration. They differ in where most
+of the implementation work is done. The functionality exposed to the customer
+should be identical (and conforming) for all three designs.
+
+
+Design A: Minimal work for the library
+======================================
+The compiler supplies all of the intrinsics as described below. This list of
+intrinsics roughly parallels the requirements of the C and C++ atomics proposals.
+The C and C++ library implementations simply drop through to these intrinsics.
+Anything the platform does not support in hardware, the compiler
+arranges for a (compiler-rt) library call to be made which will do the job with
+a mutex, and in this case ignoring the memory ordering parameter (effectively
+implementing ``memory_order_seq_cst``).
+
+Ultimate efficiency is preferred over run time error checking. Undefined
+behavior is acceptable when the inputs do not conform as defined below.
+
+.. code-block:: cpp
+
+    // In every intrinsic signature below, type* atomic_obj may be a pointer to a
+    // volatile-qualified type. Memory ordering values map to the following meanings:
+    //  memory_order_relaxed == 0
+    //  memory_order_consume == 1
+    //  memory_order_acquire == 2
+    //  memory_order_release == 3
+    //  memory_order_acq_rel == 4
+    //  memory_order_seq_cst == 5
+
+    // type must be trivially copyable
+    // type represents a "type argument"
+    bool __atomic_is_lock_free(type);
+
+    // type must be trivially copyable
+    // Behavior is defined for mem_ord = 0, 1, 2, 5
+    type __atomic_load(const type* atomic_obj, int mem_ord);
+
+    // type must be trivially copyable
+    // Behavior is defined for mem_ord = 0, 3, 5
+    void __atomic_store(type* atomic_obj, type desired, int mem_ord);
+
+    // type must be trivially copyable
+    // Behavior is defined for mem_ord = [0 ... 5]
+    type __atomic_exchange(type* atomic_obj, type desired, int mem_ord);
+
+    // type must be trivially copyable
+    // Behavior is defined for mem_success = [0 ... 5],
+    //   mem_failure <= mem_success
+    //   mem_failure != 3
+    //   mem_failure != 4
+    bool __atomic_compare_exchange_strong(type* atomic_obj,
+                                        type* expected, type desired,
+                                        int mem_success, int mem_failure);
+
+    // type must be trivially copyable
+    // Behavior is defined for mem_success = [0 ... 5],
+    //   mem_failure <= mem_success
+    //   mem_failure != 3
+    //   mem_failure != 4
+    bool __atomic_compare_exchange_weak(type* atomic_obj,
+                                        type* expected, type desired,
+                                        int mem_success, int mem_failure);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    // Behavior is defined for mem_ord = [0 ... 5]
+    type __atomic_fetch_add(type* atomic_obj, type operand, int mem_ord);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    // Behavior is defined for mem_ord = [0 ... 5]
+    type __atomic_fetch_sub(type* atomic_obj, type operand, int mem_ord);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    // Behavior is defined for mem_ord = [0 ... 5]
+    type __atomic_fetch_and(type* atomic_obj, type operand, int mem_ord);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    // Behavior is defined for mem_ord = [0 ... 5]
+    type __atomic_fetch_or(type* atomic_obj, type operand, int mem_ord);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    // Behavior is defined for mem_ord = [0 ... 5]
+    type __atomic_fetch_xor(type* atomic_obj, type operand, int mem_ord);
+
+    // Behavior is defined for mem_ord = [0 ... 5]
+    void* __atomic_fetch_add(void** atomic_obj, ptrdiff_t operand, int mem_ord);
+    void* __atomic_fetch_sub(void** atomic_obj, ptrdiff_t operand, int mem_ord);
+
+    // Behavior is defined for mem_ord = [0 ... 5]
+    void __atomic_thread_fence(int mem_ord);
+    void __atomic_signal_fence(int mem_ord);
+
+If desired the intrinsics taking a single ``mem_ord`` parameter can default
+this argument to 5.
+
+If desired the intrinsics taking two ordering parameters can default ``mem_success``
+to 5, and ``mem_failure`` to ``translate_memory_order(mem_success)`` where
+``translate_memory_order(mem_success)`` is defined as:
+
+.. code-block:: cpp
+
+    int translate_memory_order(int o) {
+        switch (o) {
+        case 4:
+            return 2;
+        case 3:
+            return 0;
+        }
+        return o;
+    }
+
+Below are representative C++ implementations of all of the operations. Their
+purpose is to document the desired semantics of each operation, assuming
+``memory_order_seq_cst``. This is essentially the code that will be called
+if the front end calls out to compiler-rt.
+
+.. code-block:: cpp
+
+    template <class T>
+    T __atomic_load(T const volatile* obj) {
+        unique_lock<mutex> _(some_mutex);
+        return *obj;
+    }
+
+    template <class T>
+    void __atomic_store(T volatile* obj, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        *obj = desr;
+    }
+
+    template <class T>
+    T __atomic_exchange(T volatile* obj, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj = desr;
+        return r;
+    }
+
+    template <class T>
+    bool __atomic_compare_exchange_strong(T volatile* obj, T* exp, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        if (std::memcmp(const_cast<T*>(obj), exp, sizeof(T)) == 0) // if (*obj == *exp)
+        {
+            std::memcpy(const_cast<T*>(obj), &desr, sizeof(T)); // *obj = desr;
+            return true;
+        }
+        std::memcpy(exp, const_cast<T*>(obj), sizeof(T)); // *exp = *obj;
+        return false;
+    }
+
+    // May spuriously return false (even if *obj == *exp)
+    template <class T>
+    bool __atomic_compare_exchange_weak(T volatile* obj, T* exp, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        if (std::memcmp(const_cast<T*>(obj), exp, sizeof(T)) == 0) // if (*obj == *exp)
+        {
+            std::memcpy(const_cast<T*>(obj), &desr, sizeof(T)); // *obj = desr;
+            return true;
+        }
+        std::memcpy(exp, const_cast<T*>(obj), sizeof(T)); // *exp = *obj;
+        return false;
+    }
+
+    template <class T>
+    T __atomic_fetch_add(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj += operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_sub(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj -= operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_and(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj &= operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_or(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj |= operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_xor(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj ^= operand;
+        return r;
+    }
+
+    void* __atomic_fetch_add(void* volatile* obj, ptrdiff_t operand) {
+        unique_lock<mutex> _(some_mutex);
+        void* r = *obj;
+        (char*&)(*obj) += operand;
+        return r;
+    }
+
+    void* __atomic_fetch_sub(void* volatile* obj, ptrdiff_t operand) {
+        unique_lock<mutex> _(some_mutex);
+        void* r = *obj;
+        (char*&)(*obj) -= operand;
+        return r;
+    }
+
+    void __atomic_thread_fence() {
+        unique_lock<mutex> _(some_mutex);
+    }
+
+    void __atomic_signal_fence() {
+        unique_lock<mutex> _(some_mutex);
+    }
+
+
+Design B: Something in between
+==============================
+This is a variation of design A which puts the burden on the library to arrange
+for the correct manipulation of the run time memory ordering arguments, and only
+calls the compiler for well-defined memory orderings. I think of this design as
+the worst of A and C, instead of the best of A and C. But I offer it as an
+option in the spirit of completeness.
+
+.. code-block:: cpp
+
+    // type must be trivially copyable
+    bool __atomic_is_lock_free(const type* atomic_obj);
+
+    // type must be trivially copyable
+    type __atomic_load_relaxed(const volatile type* atomic_obj);
+    type __atomic_load_consume(const volatile type* atomic_obj);
+    type __atomic_load_acquire(const volatile type* atomic_obj);
+    type __atomic_load_seq_cst(const volatile type* atomic_obj);
+
+    // type must be trivially copyable
+    type __atomic_store_relaxed(volatile type* atomic_obj, type desired);
+    type __atomic_store_release(volatile type* atomic_obj, type desired);
+    type __atomic_store_seq_cst(volatile type* atomic_obj, type desired);
+
+    // type must be trivially copyable
+    type __atomic_exchange_relaxed(volatile type* atomic_obj, type desired);
+    type __atomic_exchange_consume(volatile type* atomic_obj, type desired);
+    type __atomic_exchange_acquire(volatile type* atomic_obj, type desired);
+    type __atomic_exchange_release(volatile type* atomic_obj, type desired);
+    type __atomic_exchange_acq_rel(volatile type* atomic_obj, type desired);
+    type __atomic_exchange_seq_cst(volatile type* atomic_obj, type desired);
+
+    // type must be trivially copyable
+    bool __atomic_compare_exchange_strong_relaxed_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_consume_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_consume_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_acquire_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_acquire_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_acquire_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_release_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_release_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_release_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_acq_rel_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_acq_rel_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_acq_rel_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_seq_cst_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_seq_cst_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_seq_cst_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_strong_seq_cst_seq_cst(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+
+    // type must be trivially copyable
+    bool __atomic_compare_exchange_weak_relaxed_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_consume_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_consume_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_acquire_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_acquire_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_acquire_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_release_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_release_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_release_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_acq_rel_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_acq_rel_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_acq_rel_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_seq_cst_relaxed(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_seq_cst_consume(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_seq_cst_acquire(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+    bool __atomic_compare_exchange_weak_seq_cst_seq_cst(volatile type* atomic_obj,
+                                                        type* expected,
+                                                        type desired);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    type __atomic_fetch_add_relaxed(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_add_consume(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_add_acquire(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_add_release(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_add_acq_rel(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_add_seq_cst(volatile type* atomic_obj, type operand);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    type __atomic_fetch_sub_relaxed(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_sub_consume(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_sub_acquire(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_sub_release(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_sub_acq_rel(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_sub_seq_cst(volatile type* atomic_obj, type operand);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    type __atomic_fetch_and_relaxed(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_and_consume(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_and_acquire(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_and_release(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_and_acq_rel(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_and_seq_cst(volatile type* atomic_obj, type operand);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    type __atomic_fetch_or_relaxed(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_or_consume(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_or_acquire(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_or_release(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_or_acq_rel(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_or_seq_cst(volatile type* atomic_obj, type operand);
+
+    // type is one of: char, signed char, unsigned char, short, unsigned short, int,
+    //      unsigned int, long, unsigned long, long long, unsigned long long,
+    //      char16_t, char32_t, wchar_t
+    type __atomic_fetch_xor_relaxed(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_xor_consume(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_xor_acquire(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_xor_release(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_xor_acq_rel(volatile type* atomic_obj, type operand);
+    type __atomic_fetch_xor_seq_cst(volatile type* atomic_obj, type operand);
+
+    void* __atomic_fetch_add_relaxed(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_add_consume(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_add_acquire(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_add_release(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_add_acq_rel(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_add_seq_cst(void* volatile* atomic_obj, ptrdiff_t operand);
+
+    void* __atomic_fetch_sub_relaxed(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_sub_consume(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_sub_acquire(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_sub_release(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_sub_acq_rel(void* volatile* atomic_obj, ptrdiff_t operand);
+    void* __atomic_fetch_sub_seq_cst(void* volatile* atomic_obj, ptrdiff_t operand);
+
+    void __atomic_thread_fence_relaxed();
+    void __atomic_thread_fence_consume();
+    void __atomic_thread_fence_acquire();
+    void __atomic_thread_fence_release();
+    void __atomic_thread_fence_acq_rel();
+    void __atomic_thread_fence_seq_cst();
+
+    void __atomic_signal_fence_relaxed();
+    void __atomic_signal_fence_consume();
+    void __atomic_signal_fence_acquire();
+    void __atomic_signal_fence_release();
+    void __atomic_signal_fence_acq_rel();
+    void __atomic_signal_fence_seq_cst();
+
+Design C: Minimal work for the front end
+========================================
+The ``<atomic>`` header is one of the most closely coupled headers to the compiler.
+Ideally when you invoke any function from ``<atomic>``, it should result in highly
+optimized assembly being inserted directly into your application -- assembly that
+is not otherwise representable by higher level C or C++ expressions. The design of
+the libc++ ``<atomic>`` header started with this goal in mind. A secondary, but
+still very important goal is that the compiler should have to do minimal work to
+facilitate the implementation of ``<atomic>``.  Without this second goal, then
+practically speaking, the libc++ ``<atomic>`` header would be doomed to be a
+barely supported, second class citizen on almost every platform.
+
+Goals:
+
+- Optimal code generation for atomic operations
+- Minimal effort for the compiler to achieve goal 1 on any given platform
+- Conformance to the C++0X draft standard
+
+The purpose of this document is to inform compiler writers what they need to do
+to enable a high performance libc++ ``<atomic>`` with minimal effort.
+
+The minimal work that must be done for a conforming ``<atomic>``
+----------------------------------------------------------------
+The only "atomic" operations that must actually be lock free in
+``<atomic>`` are represented by the following compiler intrinsics:
+
+.. code-block:: cpp
+
+    __atomic_flag__ __atomic_exchange_seq_cst(__atomic_flag__ volatile* obj, __atomic_flag__ desr) {
+        unique_lock<mutex> _(some_mutex);
+        __atomic_flag__ result = *obj;
+        *obj = desr;
+        return result;
+    }
+
+    void __atomic_store_seq_cst(__atomic_flag__ volatile* obj, __atomic_flag__ desr) {
+        unique_lock<mutex> _(some_mutex);
+        *obj = desr;
+    }
+
+Where:
+
+- If ``__has_feature(__atomic_flag)`` evaluates to 1 in the preprocessor then
+  the compiler must define ``__atomic_flag__`` (e.g. as a typedef to ``int``).
+- If ``__has_feature(__atomic_flag)`` evaluates to 0 in the preprocessor then
+  the library defines ``__atomic_flag__`` as a typedef to ``bool``.
+- To communicate that the above intrinsics are available, the compiler must
+  arrange for ``__has_feature`` to return 1 when fed the intrinsic name
+  appended with an '_' and the mangled type name of ``__atomic_flag__``.
+
+For example if ``__atomic_flag__`` is ``unsigned int``:
+
+.. code-block:: cpp
+
+    // __has_feature(__atomic_flag) == 1
+    // __has_feature(__atomic_exchange_seq_cst_j) == 1
+    // __has_feature(__atomic_store_seq_cst_j) == 1
+
+    typedef unsigned int __atomic_flag__;
+
+    unsigned int __atomic_exchange_seq_cst(unsigned int volatile*, unsigned int) {
+        // ...
+    }
+
+    void __atomic_store_seq_cst(unsigned int volatile*, unsigned int) {
+        // ...
+    }
+
+That's it! Compiler writers do the above and you've got a fully conforming
+(though sub-par performance) ``<atomic>`` header!
+
+
+Recommended work for a higher performance ``<atomic>``
+------------------------------------------------------
+It would be good if the above intrinsics worked with all integral types plus
+``void*``. Because this may not be possible to do in a lock-free manner for
+all integral types on all platforms, a compiler must communicate each type that
+an intrinsic works with. For example, if ``__atomic_exchange_seq_cst`` works
+for all types except for ``long long`` and ``unsigned long long`` then:
+
+.. code-block:: cpp
+
+    __has_feature(__atomic_exchange_seq_cst_b) == 1  // bool
+    __has_feature(__atomic_exchange_seq_cst_c) == 1  // char
+    __has_feature(__atomic_exchange_seq_cst_a) == 1  // signed char
+    __has_feature(__atomic_exchange_seq_cst_h) == 1  // unsigned char
+    __has_feature(__atomic_exchange_seq_cst_Ds) == 1 // char16_t
+    __has_feature(__atomic_exchange_seq_cst_Di) == 1 // char32_t
+    __has_feature(__atomic_exchange_seq_cst_w) == 1  // wchar_t
+    __has_feature(__atomic_exchange_seq_cst_s) == 1  // short
+    __has_feature(__atomic_exchange_seq_cst_t) == 1  // unsigned short
+    __has_feature(__atomic_exchange_seq_cst_i) == 1  // int
+    __has_feature(__atomic_exchange_seq_cst_j) == 1  // unsigned int
+    __has_feature(__atomic_exchange_seq_cst_l) == 1  // long
+    __has_feature(__atomic_exchange_seq_cst_m) == 1  // unsigned long
+    __has_feature(__atomic_exchange_seq_cst_Pv) == 1 // void*
+
+Note that only the ``__has_feature`` flag is decorated with the argument
+type. The name of the compiler intrinsic is not decorated, but instead works
+like a C++ overloaded function.
+
+Additionally, there are other intrinsics besides ``__atomic_exchange_seq_cst``
+and ``__atomic_store_seq_cst``. They are optional. But if the compiler can
+generate faster code than provided by the library, then clients will benefit
+from the compiler writer's expertise and knowledge of the targeted platform.
+
+Below is the complete list of *sequentially consistent* intrinsics, and
+their library implementations. Template syntax is used to indicate the desired
+overloading for integral and ``void*`` types. The template does not represent a
+requirement that the intrinsic operate on **any** type!
+
+.. code-block:: cpp
+
+    // T is one of:
+    // bool, char, signed char, unsigned char, short, unsigned short,
+    // int, unsigned int, long, unsigned long,
+    // long long, unsigned long long, char16_t, char32_t, wchar_t, void*
+
+    template <class T>
+    T __atomic_load_seq_cst(T const volatile* obj) {
+        unique_lock<mutex> _(some_mutex);
+        return *obj;
+    }
+
+    template <class T>
+    void __atomic_store_seq_cst(T volatile* obj, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        *obj = desr;
+    }
+
+    template <class T>
+    T __atomic_exchange_seq_cst(T volatile* obj, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj = desr;
+        return r;
+    }
+
+    template <class T>
+    bool __atomic_compare_exchange_strong_seq_cst_seq_cst(T volatile* obj, T* exp, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        if (std::memcmp(const_cast<T*>(obj), exp, sizeof(T)) == 0) {
+            std::memcpy(const_cast<T*>(obj), &desr, sizeof(T));
+            return true;
+        }
+        std::memcpy(exp, const_cast<T*>(obj), sizeof(T));
+        return false;
+    }
+
+    template <class T>
+    bool __atomic_compare_exchange_weak_seq_cst_seq_cst(T volatile* obj, T* exp, T desr) {
+        unique_lock<mutex> _(some_mutex);
+        if (std::memcmp(const_cast<T*>(obj), exp, sizeof(T)) == 0)
+        {
+            std::memcpy(const_cast<T*>(obj), &desr, sizeof(T));
+            return true;
+        }
+        std::memcpy(exp, const_cast<T*>(obj), sizeof(T));
+        return false;
+    }
+
+    // T is one of:
+    // char, signed char, unsigned char, short, unsigned short,
+    // int, unsigned int, long, unsigned long,
+    // long long, unsigned long long, char16_t, char32_t, wchar_t
+
+    template <class T>
+    T __atomic_fetch_add_seq_cst(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj += operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_sub_seq_cst(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj -= operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_and_seq_cst(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj &= operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_or_seq_cst(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj |= operand;
+        return r;
+    }
+
+    template <class T>
+    T __atomic_fetch_xor_seq_cst(T volatile* obj, T operand) {
+        unique_lock<mutex> _(some_mutex);
+        T r = *obj;
+        *obj ^= operand;
+        return r;
+    }
+
+    void* __atomic_fetch_add_seq_cst(void* volatile* obj, ptrdiff_t operand) {
+        unique_lock<mutex> _(some_mutex);
+        void* r = *obj;
+        (char*&)(*obj) += operand;
+        return r;
+    }
+
+    void* __atomic_fetch_sub_seq_cst(void* volatile* obj, ptrdiff_t operand) {
+        unique_lock<mutex> _(some_mutex);
+        void* r = *obj;
+        (char*&)(*obj) -= operand;
+        return r;
+    }
+
+    void __atomic_thread_fence_seq_cst() {
+        unique_lock<mutex> _(some_mutex);
+    }
+
+    void __atomic_signal_fence_seq_cst() {
+        unique_lock<mutex> _(some_mutex);
+    }
+
+One should consult the (currently draft) `C++ Standard <https://wg21.link/n3126>`_
+for the details of the definitions for these operations. For example,
+``__atomic_compare_exchange_weak_seq_cst_seq_cst`` is allowed to fail
+spuriously while ``__atomic_compare_exchange_strong_seq_cst_seq_cst`` is not.
+
+If on your platform the lock-free definition of ``__atomic_compare_exchange_weak_seq_cst_seq_cst``
+would be the same as ``__atomic_compare_exchange_strong_seq_cst_seq_cst``, you may omit the
+``__atomic_compare_exchange_weak_seq_cst_seq_cst`` intrinsic without a performance cost. The
+library will prefer your implementation of ``__atomic_compare_exchange_strong_seq_cst_seq_cst``
+over its own definition for implementing ``__atomic_compare_exchange_weak_seq_cst_seq_cst``.
+That is, the library will arrange for ``__atomic_compare_exchange_weak_seq_cst_seq_cst`` to call
+``__atomic_compare_exchange_strong_seq_cst_seq_cst`` if you supply an intrinsic for the strong
+version but not the weak.
+
+Taking advantage of weaker memory synchronization
+-------------------------------------------------
+So far, all of the intrinsics presented require a **sequentially consistent** memory ordering.
+That is, no loads or stores can move across the operation (just as if the library had locked
+that internal mutex). But ``<atomic>`` supports weaker memory ordering operations. In all,
+there are six memory orderings (listed here from strongest to weakest):
+
+.. code-block:: cpp
+
+    memory_order_seq_cst
+    memory_order_acq_rel
+    memory_order_release
+    memory_order_acquire
+    memory_order_consume
+    memory_order_relaxed
+
+(See the `C++ Standard <https://wg21.link/n3126>`_ for the detailed definitions of each of these orderings).
+
+On some platforms, the compiler vendor can offer some or even all of the above
+intrinsics at one or more weaker levels of memory synchronization. This might
+lead for example to not issuing an ``mfence`` instruction on the x86.
+
+If the compiler does not offer any given operation, at any given memory ordering
+level, the library will automatically attempt to call the next highest memory
+ordering operation. This continues up to ``seq_cst``, and if that doesn't
+exist, then the library takes over and does the job with a ``mutex``. This
+is a compile-time search and selection operation. At run time, the application
+will only see the few inlined assembly instructions for the selected intrinsic.
+
+Each intrinsic is appended with the 7-letter name of the memory ordering it
+addresses. For example a ``load`` with ``relaxed`` ordering is defined by:
+
+.. code-block:: cpp
+
+    T __atomic_load_relaxed(const volatile T* obj);
+
+And announced with:
+
+.. code-block:: cpp
+
+    __has_feature(__atomic_load_relaxed_b) == 1  // bool
+    __has_feature(__atomic_load_relaxed_c) == 1  // char
+    __has_feature(__atomic_load_relaxed_a) == 1  // signed char
+    ...
+
+The ``__atomic_compare_exchange_strong(weak)`` intrinsics are parameterized
+on two memory orderings. The first ordering applies when the operation returns
+``true`` and the second ordering applies when the operation returns ``false``.
+
+Not every memory ordering is appropriate for every operation. ``exchange``
+and the ``fetch_XXX`` operations support all 6. But ``load`` only supports
+``relaxed``, ``consume``, ``acquire`` and ``seq_cst``. ``store`` only supports
+``relaxed``, ``release``, and ``seq_cst``. The ``compare_exchange`` operations
+support the following 16 combinations out of the possible 36:
+
+.. code-block:: cpp
+
+    relaxed_relaxed
+    consume_relaxed
+    consume_consume
+    acquire_relaxed
+    acquire_consume
+    acquire_acquire
+    release_relaxed
+    release_consume
+    release_acquire
+    acq_rel_relaxed
+    acq_rel_consume
+    acq_rel_acquire
+    seq_cst_relaxed
+    seq_cst_consume
+    seq_cst_acquire
+    seq_cst_seq_cst
+
+Again, the compiler supplies intrinsics only for the strongest orderings where
+it can make a difference. The library takes care of calling the weakest
+supplied intrinsic that is as strong or stronger than the customer asked for.
+
+Note about ABI
+==============
+With any design, the (back end) compiler writer should note that the decision to
+implement lock-free operations on any given type (or not) is an ABI-binding decision.
+One can not change from treating a type as not lock free, to lock free (or vice-versa)
+without breaking your ABI.
+
+For example:
+
+**TU1.cpp**:
+
+.. code-block:: cpp
+
+    extern atomic<long long> A;
+    int foo() { return A.compare_exchange_strong(w, x); }
+
+
+**TU2.cpp**:
+
+.. code-block:: cpp
+
+    extern atomic<long long> A;
+    void bar() { return A.compare_exchange_strong(y, z); }
+
+If only **one** of these calls to ``compare_exchange_strong`` is implemented with
+mutex-locked code, then that mutex-locked code will not be executed mutually
+exclusively of the one implemented in a lock-free manner.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/CapturingConfigInfo.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/CapturingConfigInfo.rst
new file mode 100644
index 0000000..402f4c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/CapturingConfigInfo.rst
@@ -0,0 +1,68 @@
+==================================================
+Capturing configuration information in the headers
+==================================================
+
+.. contents::
+   :local:
+
+The Problem
+===========
+
+libc++ supports building the library with a number of different configuration options.
+In order to support persistent configurations and reduce arbitrary preprocessor logic
+in the headers, libc++ has a mechanism to capture configuration options in the
+installed headers so they can be used in the rest of the code.
+
+
+Design Goals
+============
+
+* The solution should be simple, consistent and robust to avoid subtle bugs.
+
+* Developers should test the code the same way it will be deployed -- in other words,
+  the headers used to run tests should be the same that we install in order
+  to avoid bugs creeping up.
+
+* It should allow different targets or flavors of the library to use a different
+  configuration without having to duplicate all the libc++ headers.
+
+
+The Solution
+============
+
+When you first configure libc++ using CMake, a ``__config_site`` file is generated
+to capture the various configuration options you selected. The ``__config`` header
+used by all other headers includes this ``__config_site`` header first in order to
+get the correct configuration.
+
+The ``__config_site`` header is hence the only place where persistent configuration
+is stored in the library. That header essentially reflects how the vendor configured
+the library. As we evolve the library, we can lift configuration options into that
+header in order to reduce arbitrary hardcoded choices elsewhere in the code. For
+example, instead of assuming that a specific platform doesn't provide some functionality,
+we can create a generic macro to guard it and vendors can define the macro when
+configuring the library on that platform. This makes the "carve off" reusable in
+other circumstances instead of tying it tightly to a single platform.
+
+Furthermore, the Clang driver now looks for headers in a target-specific directory
+for libc++. By installing the ``__config_site`` header (and only that header) to
+this target-specific directory, it is possible to share the libc++ headers for
+multiple targets, and only duplicate the persistent information located in the
+``__config_site`` header. For example:
+
+.. code-block:: bash
+
+  include/c++/v1/
+    vector
+    map
+    etc...
+
+  include/<targetA>/c++/v1/
+    __config_site
+
+  include/<targetB>/c++/v1/
+    __config_site
+
+When compiling for ``targetA``, Clang will use the ``__config_site`` inside
+``include/<targetA>/c++/v1/``, and the corresponding ``__config_site`` for
+``targetB``.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/DebugMode.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/DebugMode.rst
new file mode 100644
index 0000000..5c8c490
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/DebugMode.rst
@@ -0,0 +1,71 @@
+==========
+Debug Mode
+==========
+
+.. contents::
+   :local:
+
+.. _using-debug-mode:
+
+Using the debug mode
+====================
+
+Libc++ provides a debug mode that enables special debugging checks meant to detect
+incorrect usage of the standard library. These checks are disabled by default, but
+they can be enabled by vendors when building the library by using ``LIBCXX_ENABLE_DEBUG_MODE``.
+
+Since the debug mode has ABI implications, users should compile their whole program,
+including any dependent libraries, against a Standard library configured identically
+with respect to the debug mode. In other words, they should not mix code built against
+a Standard library with the debug mode enabled with code built against a Standard library
+where the debug mode is disabled.
+
+Furthermore, users should not rely on a stable ABI being provided when the debug mode is
+enabled -- we reserve the right to change the ABI at any time. If you need a stable ABI
+and still want some level of hardening, you should look into enabling :ref:`assertions <assertions-mode>`
+instead.
+
+The debug mode provides various checks to aid application debugging.
+
+Comparator consistency checks
+-----------------------------
+Libc++ provides some checks for the consistency of comparators passed to algorithms. Specifically,
+many algorithms such as ``binary_search``, ``merge``, ``next_permutation``, and ``sort``, wrap the
+user-provided comparator to assert that `!comp(y, x)` whenever `comp(x, y)`. This can cause the
+user-provided comparator to be evaluated up to twice as many times as it would be without the
+debug mode, and causes the library to violate some of the Standard's complexity clauses.
+
+Iterator bounds checking
+------------------------
+The library provides iterators that ensure they are within the bounds of their container when dereferenced.
+Arithmetic can be performed on these iterators to create out-of-bounds iterators, but they cannot be dereferenced
+when out-of-bounds. The following classes currently provide iterators that have bounds checking:
+
+- ``std::string``
+- ``std::vector<T>`` (``T != bool``)
+- ``std::span``
+
+.. TODO: Add support for iterator bounds checking in ``std::string_view`` and ``std::array``
+
+Iterator ownership checking
+---------------------------
+The library provides iterator ownership checking, which allows catching cases where e.g.
+an iterator from container ``X`` is used as a position to insert into container ``Y``.
+The following classes support iterator ownership checking:
+
+- ``std::string``
+- ``std::vector<T>`` (``T != bool``)
+- ``std::list``
+- ``std::unordered_map``
+- ``std::unordered_multimap``
+- ``std::unordered_set``
+- ``std::unordered_multiset``
+
+Randomizing unspecified behavior
+--------------------------------
+The library supports the randomization of unspecified behavior. For example, randomizing
+the relative order of equal elements in ``std::sort`` or randomizing both parts of the
+partition after calling ``std::nth_element``. This effort helps migrating to potential
+future faster versions of these algorithms that might not have the exact same behavior.
+In particular, it makes it easier to deflake tests that depend on unspecified behavior.
+A seed can be used to make such failures reproducible: use ``_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY_SEED=seed``.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/ExperimentalFeatures.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/ExperimentalFeatures.rst
new file mode 100644
index 0000000..defe0e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/ExperimentalFeatures.rst
@@ -0,0 +1,208 @@
+=====================
+Experimental Features
+=====================
+
+.. contents::
+   :local:
+
+.. _experimental features:
+
+Overview
+========
+
+Libc++ implements technical specifications (TSes) and ships them as experimental
+features that users are free to try out. The goal is to allow getting feedback
+on those experimental features.
+
+However, libc++ does not provide the same guarantees about those features as
+it does for the rest of the library. In particular, no ABI or API stability
+is guaranteed, and experimental features are deprecated once the non-experimental
+equivalent has shipped in the library. This document outlines the details of
+that process.
+
+Background
+==========
+
+The "end game" of a Technical Specification (TS) is to have the features in
+there added to a future version of the C++ Standard. When this happens, the TS
+can be retired. Sometimes, only part of at TS is added to the standard, and
+the rest of the features may be incorporated into the next version of the TS.
+
+Adoption leaves library implementors with two implementations of a feature,
+one in namespace ``std``, and the other in namespace ``std::experimental``.
+The first one will continue to evolve (via issues and papers), while the other
+will not. Gradually they will diverge. It's not good for users to have two
+(subtly) different implementations of the same functionality in the same library.
+
+Design
+======
+
+When a feature is adopted into the main standard, we implement it in namespace
+``std``. Once that implementation is complete, we then create a deprecation
+warning for the corresponding experimental feature warning users to move off
+of it and to the now-standardized feature.
+
+These deprecation warnings are guarded by a macro of the form
+``_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_<FEATURE>``, which
+can be defined by users to disable the deprecation warning. Whenever
+possible, deprecation warnings are put on a per-declaration basis
+using the ``[[deprecated]]`` attribute, which also allows disabling
+the warnings using ``-Wno-deprecated-declarations``.
+
+After **2 releases** of LLVM, the experimental feature is removed completely
+(and the deprecation notice too). Using the experimental feature simply becomes
+an error. Furthermore, when an experimental header becomes empty due to the
+removal of the corresponding experimental feature, the header is removed.
+Keeping the header around creates incorrect assumptions from users and breaks
+``__has_include``.
+
+
+Status of TSes
+==============
+
+Library Fundamentals TS `V1 <https://wg21.link/N4480>`__ and `V2 <https://wg21.link/N4617>`__
+---------------------------------------------------------------------------------------------
+
+Most (but not all) of the features of the LFTS were accepted into C++17.
+
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| Section | Feature                                               | Shipped in ``std`` | To be removed from ``std::experimental`` | Notes                   |
++=========+=======================================================+====================+==========================================+=========================+
+| 2.1     | ``uses_allocator construction``                       | 5.0                | 7.0                                      |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.1.2   | ``erased_type``                                       |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.2.1   | ``tuple_size_v``                                      | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.2.2   | ``apply``                                             | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.3.1   | All of the ``_v`` traits in ``<type_traits>``         | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.3.2   | ``invocation_type`` and ``raw_invocation_type``       |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.3.3   | Logical operator traits                               | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.3.3   | Detection Idiom                                       | 5.0                |                                          | Only partially in C++17 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.4.1   | All of the ``_v`` traits in ``<ratio>``               | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.5.1   | All of the ``_v`` traits in ``<chrono>``              | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.6.1   | All of the ``_v`` traits in ``<system_error>``        | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 3.7     | ``propagate_const``                                   |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 4.2     | Enhancements to ``function``                          | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 4.3     | searchers                                             | 7.0                | 9.0                                      |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 5       | optional                                              | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 6       | ``any``                                               | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 7       | ``string_view``                                       | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.2.1   | ``shared_ptr`` enhancements                           | Not yet            | Never added                              |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.2.2   | ``weak_ptr`` enhancements                             | Not yet            | Never added                              |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.5     | ``memory_resource``                                   | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.6     | ``polymorphic_allocator``                             | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.7     | ``resource_adaptor``                                  |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.8     | Access to program-wide ``memory_resource`` objects    | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.9     | Pool resource classes                                 | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.10    | ``monotonic_buffer_resource``                         | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.11    | Alias templates using polymorphic memory resources    | Not yet            |                                          |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 8.12    | Non-owning pointers                                   |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 11.2    | ``promise``                                           |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 11.3    | ``packaged_task``                                     |                    | n/a                                      | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 12.2    | ``search``                                            | 7.0                | 9.0                                      |                         |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 12.3    | ``sample``                                            | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 12.4    | ``shuffle``                                           |                    |                                          | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 13.1    | ``gcd`` and ``lcm``                                   | 5.0                | 7.0                                      | Removed                 |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 13.2    | Random number generation                              |                    |                                          | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+| 14      | Reflection Library                                    |                    |                                          | Not part of C++17       |
++---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+
+
+`FileSystem TS <https://wg21.link/N4100>`__
+-------------------------------------------
+The FileSystem TS was accepted (in totality) for C++17.
+The FileSystem TS implementation was shipped in namespace ``std`` in LLVM 7.0, and was
+removed in LLVM 11.0 (due to the lack of deprecation warnings before LLVM 9.0).
+
+Parallelism TS `V1 <https://wg21.link/N4507>`__ and `V2 <https://wg21.link/N4706>`__
+------------------------------------------------------------------------------------
+Some (most) of the Parallelism TS was accepted for C++17.
+We have not yet shipped an implementation of the Parallelism TS.
+
+`Coroutines TS <https://wg21.link/N4680>`__
+-------------------------------------------
+The Coroutines TS was accepted for C++20.
+An implementation of the Coroutines TS was shipped in LLVM 5.0 in namespace ``std::experimental``,
+and C++20 Coroutines shipped in LLVM 14.0. The implementation of the Coroutines TS in ``std::experimental``
+will be removed in LLVM 16.0.
+
+`Networking TS <https://wg21.link/N4656>`__
+-------------------------------------------
+The Networking TS is not yet part of a shipping standard.
+We have not yet shipped an implementation of the Networking TS.
+
+`Ranges TS <https://wg21.link/N4685>`__
+---------------------------------------
+The Ranges TS was accepted for C++20.
+We will not ship an implementation of the Ranges TS, however we are actively working on
+the implementation of C++20 Ranges.
+
+`Concepts TS <https://wg21.link/N4641>`__
+-----------------------------------------
+The Concepts TS was accepted for C++20.
+We will not ship an implementation of the Concepts TS, however we are shipping an
+implementation of C++20 Concepts.
+
+`Concurrency TS <https://wg21.link/P0159>`__
+--------------------------------------------
+The Concurrency TS was adopted in Kona (2015).
+None of the Concurrency TS was accepted for C++17.
+We have not yet shipped an implementation of the Concurrency TS.
+
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | Section | Feature                                               | Shipped in ``std`` | To be removed from ``std::experimental`` | Notes                   |
+.. +=========+=======================================================+====================+==========================================+=========================+
+.. | 2.3     | class template ``future``                             |                    |                                          |                         |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.4     | class template ``shared_future``                      |                    |                                          |                         |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.5     | class template ``promise``                            |                    |                                          | Only using ``future``   |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.6     | class template ``packaged_task``                      |                    |                                          | Only using ``future``   |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.7     | function template ``when_all``                        |                    |                                          | Not part of C++17       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.8     | class template ``when_any_result``                    |                    |                                          | Not part of C++17       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.9     | function template ``when_any``                        |                    |                                          | Not part of C++17       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.10    | function template ``make_ready_future``               |                    |                                          | Not part of C++17       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 2.11    | function template ``make_exeptional_future``          |                    |                                          | Not part of C++17       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 3       | ``latches`` and ``barriers``                          |                    |                                          | Not part of C++17       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
+.. | 4       | Atomic Smart Pointers                                 |                    |                                          | Adopted for C++20       |
+.. +---------+-------------------------------------------------------+--------------------+------------------------------------------+-------------------------+
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/ExtendedCXX03Support.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/ExtendedCXX03Support.rst
new file mode 100644
index 0000000..213cf2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/ExtendedCXX03Support.rst
@@ -0,0 +1,118 @@
+=======================
+Extended C++03 Support
+=======================
+
+.. contents::
+   :local:
+
+Overview
+========
+
+libc++ is an implementation of the C++ standard library targeting C++11 or later.
+
+In C++03, the library implements the C++11 standard using C++11 language extensions provided
+by Clang.
+
+This document tracks the C++11 extensions libc++ requires, the C++11 extensions it provides,
+and how to write minimal C++11 inside libc++.
+
+Required C++11 Compiler Extensions
+==================================
+
+Clang provides a large subset of C++11 in C++03 as an extension. The features
+libc++ expects Clang  to provide are:
+
+* Variadic templates.
+* RValue references and perfect forwarding.
+* Alias templates
+* defaulted and deleted Functions.
+* reference qualified Functions
+* ``auto``
+
+There are also features that Clang *does not* provide as an extension in C++03
+mode. These include:
+
+* ``constexpr`` and ``noexcept``
+*  Trailing return types.
+* ``>>`` without a space.
+
+
+Provided C++11 Library Extensions
+=================================
+
+.. warning::
+  The C++11 extensions libc++ provides in C++03 are currently undergoing change. Existing extensions
+  may be removed in the future. New users are strongly discouraged depending on these extension
+  in new code.
+
+  This section will be updated once the libc++ developer community has further discussed the
+  future of C++03 with libc++.
+
+
+Using Minimal C++11 in libc++
+=============================
+
+This section is for developers submitting patches to libc++. It describes idioms that should be
+used in libc++ code, even in C++03, and the reasons behind them.
+
+
+Use Alias Templates over Class Templates
+----------------------------------------
+
+Alias templates should be used instead of class templates in metaprogramming. Unlike class templates,
+Alias templates do not produce a new instantiation every time they are used. This significantly
+decreases the amount of memory used by the compiler.
+
+For example, libc++ should not use ``add_const`` internally. Instead it should use an alias template
+like
+
+.. code-block:: cpp
+
+  template <class _Tp>
+  using _AddConst = const _Tp;
+
+Use Default Template Parameters for SFINAE
+------------------------------------------
+
+There are three places in a function declaration that SFINAE may occur: In the template parameter list,
+in the function parameter list, and in the return type. For example:
+
+.. code-block:: cpp
+
+  template <class _Tp, class _ = enable_if_t</*...*/ >
+  void foo(_Tp); // #1
+
+  template <class _Tp>
+  void bar(_Tp, enable_if_t</*...*/>* = nullptr); // # 2
+
+  template <class _Tp>
+  enable_if_t</*...*/> baz(_Tp); // # 3
+
+Using default template parameters for SFINAE (#1) should always be prefered.
+
+Option #2 has two problems. First, users can observe and accidentally pass values to the SFINAE
+function argument. Second, the default arguement creates a live variable, which causes debug
+information to be emitted containing the text of the SFINAE.
+
+Option #3 can also cause more debug information to be emitted than is needed, because the function
+return type will appear in the debug information.
+
+Use ``unique_ptr`` when allocating memory
+------------------------------------------
+
+The standard library often needs to allocate memory and then construct a user type in it.
+If the users constructor throws, the library needs to deallocate that memory. The idiomatic way to
+achieve this is with ``unique_ptr``.
+
+``__builtin_new_allocator`` is an example of this idiom. Example usage would look like:
+
+.. code-block:: cpp
+
+  template <class T>
+  T* __create() {
+    using _UniquePtr = unique_ptr<void*, __default_new_allocator::__default_new_deleter>;
+    _UniquePtr __p = __default_new_allocator::__allocate_bytes(sizeof(T), alignof(T));
+    T* __res = ::new(__p.get()) T();
+    (void)__p.release();
+    return __res;
+  }
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/FeatureTestMacros.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/FeatureTestMacros.rst
new file mode 100644
index 0000000..2c6f983
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/FeatureTestMacros.rst
@@ -0,0 +1,43 @@
+===================
+Feature Test Macros
+===================
+
+.. contents::
+   :local:
+
+Overview
+========
+
+Libc++ implements the C++ feature test macros as specified in the C++20 standard,
+and before that in non-normative guiding documents
+(`See cppreference <https://en.cppreference.com/w/User:D41D8CD98F/feature_testing_macros>`_)
+
+
+Design
+======
+
+Feature test macros are tricky to track, implement, test, and document correctly.
+They must be available from a list of headers, they may have different values in
+different dialects, and they may or may not be implemented by libc++. In order to
+track all of these conditions correctly and easily, we want a Single Source of
+Truth (SSoT) that defines each feature test macro, its values, the headers it
+lives in, and whether or not is is implemented by libc++. From this SSoA we
+have enough information to automatically generate the `<version>` header,
+the tests, and the documentation.
+
+Therefore we maintain a SSoA in `libcxx/utils/generate_feature_test_macro_components.py`
+which doubles as a script to generate the following components:
+
+* The `<version>` header.
+* The version tests under `support.limits.general`.
+* Documentation of libc++'s implementation of each macro.
+
+Usage
+=====
+
+The `generate_feature_test_macro_components.py` script is used to track and
+update feature test macros in libc++.
+
+Whenever a feature test macro is added or changed, the table should be updated
+and the script should be re-ran. The script will clobber the existing test files,
+the documentation and the `<version>` header.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/FileTimeType.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/FileTimeType.rst
new file mode 100644
index 0000000..a54d2bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/FileTimeType.rst
@@ -0,0 +1,495 @@
+==============
+File Time Type
+==============
+
+.. contents::
+   :local:
+
+.. _file-time-type-motivation:
+
+Motivation
+==========
+
+The filesystem library provides interfaces for getting and setting the last
+write time of a file or directory. The interfaces use the ``file_time_type``
+type, which is a specialization of ``chrono::time_point`` for the
+"filesystem clock". According to [fs.filesystem.syn]
+
+  trivial-clock is an implementation-defined type that satisfies the
+  Cpp17TrivialClock requirements ([time.clock.req]) and that is capable of
+  representing and measuring file time values. Implementations should ensure
+  that the resolution and range of file_time_type reflect the operating
+  system dependent resolution and range of file time values.
+
+
+On POSIX systems, file times are represented using the ``timespec`` struct,
+which is defined as follows:
+
+.. code-block:: cpp
+
+  struct timespec {
+    time_t tv_sec;
+    long   tv_nsec;
+  };
+
+To represent the range and resolution of ``timespec``, we need to (A) have
+nanosecond resolution, and (B) use more than 64 bits (assuming a 64 bit ``time_t``).
+
+As the standard requires us to use the ``chrono`` interface, we have to define
+our own filesystem clock which specifies the period and representation of
+the time points and duration it provides. It will look like this:
+
+.. code-block:: cpp
+
+  struct _FilesystemClock {
+    using period = nano;
+    using rep = TBD; // What is this?
+
+    using duration = chrono::duration<rep, period>;
+    using time_point = chrono::time_point<_FilesystemClock>;
+
+    // ... //
+  };
+
+  using file_time_type = _FilesystemClock::time_point;
+
+
+To get nanosecond resolution, we simply define ``period`` to be ``std::nano``.
+But what type can we use as the arithmetic representation that is capable
+of representing the range of the ``timespec`` struct?
+
+Problems To Consider
+====================
+
+Before considering solutions, let's consider the problems they should solve,
+and how important solving those problems are:
+
+
+Having a Smaller Range than ``timespec``
+----------------------------------------
+
+One solution to the range problem is to simply reduce the resolution of
+``file_time_type`` to be less than that of nanoseconds. This is what libc++'s
+initial implementation of ``file_time_type`` did; it's also what
+``std::system_clock`` does. As a result, it can represent time points about
+292 thousand years on either side of the epoch, as opposed to only 292 years
+at nanosecond resolution.
+
+``timespec`` can represent time points +/- 292 billion years from the epoch
+(just in case you needed a time point 200 billion years before the big bang,
+and with nanosecond resolution).
+
+To get the same range, we would need to drop our resolution to that of seconds
+to come close to having the same range.
+
+This begs the question, is the range problem "really a problem"? Sane usages
+of file time stamps shouldn't exceed +/- 300 years, so should we care to support it?
+
+I believe the answer is yes. We're not designing the filesystem time API, we're
+providing glorified C++ wrappers for it. If the underlying API supports
+a value, then we should too. Our wrappers should not place artificial restrictions
+on users that are not present in the underlying filesystem.
+
+Having a smaller range that the underlying filesystem forces the
+implementation to report ``value_too_large`` errors when it encounters a time
+point that it can't represent. This can cause the call to ``last_write_time``
+to throw in cases where the user was confident the call should succeed. (See below)
+
+
+.. code-block:: cpp
+
+  #include <filesystem>
+  using namespace std::filesystem;
+
+  // Set the times using the system interface.
+  void set_file_times(const char* path, struct timespec ts) {
+    timespec both_times[2];
+    both_times[0] = ts;
+    both_times[1] = ts;
+    int result = ::utimensat(AT_FDCWD, path, both_times, 0);
+    assert(result != -1);
+  }
+
+  // Called elsewhere to set the file time to something insane, and way
+  // out of the 300 year range we might expect.
+  void some_bad_persons_code() {
+    struct timespec new_times;
+    new_times.tv_sec = numeric_limits<time_t>::max();
+    new_times.tv_nsec = 0;
+    set_file_times("/tmp/foo", new_times); // OK, supported by most FSes
+  }
+
+  int main(int, char**) {
+    path p = "/tmp/foo";
+    file_status st = status(p);
+    if (!exists(st) || !is_regular_file(st))
+      return 1;
+    if ((st.permissions() & perms::others_read) == perms::none)
+      return 1;
+    // It seems reasonable to assume this call should succeed.
+    file_time_type tp = last_write_time(p); // BAD! Throws value_too_large.
+    return 0;
+  }
+
+
+Having a Smaller Resolution than ``timespec``
+---------------------------------------------
+
+As mentioned in the previous section, one way to solve the range problem
+is by reducing the resolution. But matching the range of ``timespec`` using a
+64 bit representation requires limiting the resolution to seconds.
+
+So we might ask: Do users "need" nanosecond precision? Is seconds not good enough?
+I limit my consideration of the point to this: Why was it not good enough for
+the underlying system interfaces? If it wasn't good enough for them, then it
+isn't good enough for us. Our job is to match the filesystems range and
+representation, not design it.
+
+
+Having a Larger Range than ``timespec``
+----------------------------------------
+
+We should also consider the opposite problem of having a ``file_time_type``
+that is able to represent a larger range than ``timespec``. At least in
+this case ``last_write_time`` can be used to get and set all possible values
+supported by the underlying filesystem; meaning ``last_write_time(p)`` will
+never throw a overflow error when retrieving a value.
+
+However, this introduces a new problem, where users are allowed to attempt to
+create a time point beyond what the filesystem can represent. Two particular
+values which cause this are ``file_time_type::min()`` and
+``file_time_type::max()``. As a result, the following code would throw:
+
+.. code-block:: cpp
+
+  void test() {
+    last_write_time("/tmp/foo", file_time_type::max()); // Throws
+    last_write_time("/tmp/foo", file_time_type::min()); // Throws.
+  }
+
+Apart from cases explicitly using ``min`` and ``max``, I don't see users taking
+a valid time point, adding a couple hundred billions of years in error,
+and then trying to update a file's write time to that value very often.
+
+Compared to having a smaller range, this problem seems preferable. At least
+now we can represent any time point the filesystem can, so users won't be forced
+to revert back to system interfaces to avoid limitations in the C++ STL.
+
+I posit that we should only consider this concern *after* we have something
+with at least the same range and resolution of the underlying filesystem. The
+latter two problems are much more important to solve.
+
+Potential Solutions And Their Complications
+===========================================
+
+Source Code Portability Across Implementations
+-----------------------------------------------
+
+As we've discussed, ``file_time_type`` needs a representation that uses more
+than 64 bits. The possible solutions include using ``__int128_t``, emulating a
+128 bit integer using a class, or potentially defining a ``timespec`` like
+arithmetic type. All three will allow us to, at minimum, match the range
+and resolution, and the last one might even allow us to match them exactly.
+
+But when considering these potential solutions we need to consider more than
+just the values they can represent. We need to consider the effects they will
+have on users and their code. For example, each of them breaks the following
+code in some way:
+
+.. code-block:: cpp
+
+  // Bug caused by an unexpected 'rep' type returned by count.
+  void print_time(path p) {
+    // __int128_t doesn't have streaming operators, and neither would our
+    // custom arithmetic types.
+    cout << last_write_time(p).time_since_epoch().count() << endl;
+  }
+
+  // Overflow during creation bug.
+  file_time_type timespec_to_file_time_type(struct timespec ts) {
+    // woops! chrono::seconds and chrono::nanoseconds use a 64 bit representation
+    // this may overflow before it's converted to a file_time_type.
+    auto dur = seconds(ts.tv_sec) + nanoseconds(ts.tv_nsec);
+    return file_time_type(dur);
+  }
+
+  file_time_type correct_timespec_to_file_time_type(struct timespec ts) {
+    // This is the correct version of the above example, where we
+    // avoid using the chrono typedefs as they're not sufficient.
+    // Can we expect users to avoid this bug?
+    using fs_seconds = chrono::duration<file_time_type::rep>;
+    using fs_nanoseconds = chrono::duration<file_time_type::rep, nano>;
+    auto dur = fs_seconds(ts.tv_sec) + fs_nanoseconds(tv.tv_nsec);
+    return file_time_type(dur);
+  }
+
+  // Implicit truncation during conversion bug.
+  intmax_t get_time_in_seconds(path p) {
+    using fs_seconds = duration<file_time_type::rep, ratio<1, 1> >;
+    auto tp = last_write_time(p);
+
+    // This works with truncation for __int128_t, but what does it do for
+    // our custom arithmetic types.
+    return duration_cast<fs_seconds>().count();
+  }
+
+
+Each of the above examples would require a user to adjust their filesystem code
+to the particular eccentricities of the representation, hopefully only in such
+a way that the code is still portable across implementations.
+
+At least some of the above issues are unavoidable, no matter what
+representation we choose. But some representations may be quirkier than others,
+and, as I'll argue later, using an actual arithmetic type (``__int128_t``)
+provides the least aberrant behavior.
+
+
+Chrono and ``timespec`` Emulation.
+----------------------------------
+
+One of the options we've considered is using something akin to ``timespec``
+to represent the ``file_time_type``. It only seems natural seeing as that's
+what the underlying system uses, and because it might allow us to match
+the range and resolution exactly. But would it work with chrono? And could
+it still act at all like a ``timespec`` struct?
+
+For ease of consideration, let's consider what the implementation might
+look like.
+
+.. code-block:: cpp
+
+  struct fs_timespec_rep {
+    fs_timespec_rep(long long v)
+      : tv_sec(v / nano::den), tv_nsec(v % nano::den)
+    { }
+  private:
+    time_t tv_sec;
+    long tv_nsec;
+  };
+  bool operator==(fs_timespec_rep, fs_timespec_rep);
+  fs_int128_rep operator+(fs_timespec_rep, fs_timespec_rep);
+  // ... arithmetic operators ... //
+
+The first thing to notice is that we can't construct ``fs_timespec_rep`` like
+a ``timespec`` by passing ``{secs, nsecs}``. Instead we're limited to
+constructing it from a single 64 bit integer.
+
+We also can't allow the user to inspect the ``tv_sec`` or ``tv_nsec`` values
+directly. A ``chrono::duration`` represents its value as a tick period and a
+number of ticks stored using ``rep``. The representation is unaware of the
+tick period it is being used to represent, but ``timespec`` is setup to assume
+a nanosecond tick period; which is the only case where the names ``tv_sec``
+and ``tv_nsec`` match the values they store.
+
+When we convert a nanosecond duration to seconds, ``fs_timespec_rep`` will
+use ``tv_sec`` to represent the number of giga seconds, and ``tv_nsec`` the
+remaining seconds. Let's consider how this might cause a bug were users allowed
+to manipulate the fields directly.
+
+.. code-block:: cpp
+
+  template <class Period>
+  timespec convert_to_timespec(duration<fs_time_rep, Period> dur) {
+    fs_timespec_rep rep = dur.count();
+    return {rep.tv_sec, rep.tv_nsec}; // Oops! Period may not be nanoseconds.
+  }
+
+  template <class Duration>
+  Duration convert_to_duration(timespec ts) {
+    Duration dur({ts.tv_sec, ts.tv_nsec}); // Oops! Period may not be nanoseconds.
+    return file_time_type(dur);
+    file_time_type tp = last_write_time(p);
+    auto dur =
+  }
+
+  time_t extract_seconds(file_time_type tp) {
+    // Converting to seconds is a silly bug, but I could see it happening.
+    using SecsT = chrono::duration<file_time_type::rep, ratio<1, 1>>;
+    auto secs = duration_cast<Secs>(tp.time_since_epoch());
+    // tv_sec is now representing gigaseconds.
+    return secs.count().tv_sec; // Oops!
+  }
+
+Despite ``fs_timespec_rep`` not being usable in any manner resembling
+``timespec``, it still might buy us our goal of matching its range exactly,
+right?
+
+Sort of. Chrono provides a specialization point which specifies the minimum
+and maximum values for a custom representation. It looks like this:
+
+.. code-block:: cpp
+
+  template <>
+  struct duration_values<fs_timespec_rep> {
+    static fs_timespec_rep zero();
+    static fs_timespec_rep min();
+    static fs_timespec_rep max() { // assume friendship.
+      fs_timespec_rep val;
+      val.tv_sec = numeric_limits<time_t>::max();
+      val.tv_nsec = nano::den - 1;
+      return val;
+    }
+  };
+
+Notice that ``duration_values`` doesn't tell the representation what tick
+period it's actually representing. This would indeed correctly limit the range
+of ``duration<fs_timespec_rep, nano>`` to exactly that of ``timespec``. But
+nanoseconds isn't the only tick period it will be used to represent. For
+example:
+
+.. code-block:: cpp
+
+  void test() {
+    using rep = file_time_type::rep;
+    using fs_nsec = duration<rep, nano>;
+    using fs_sec = duration<rep>;
+    fs_nsec nsecs(fs_seconds::max()); // Truncates
+  }
+
+Though the above example may appear silly, I think it follows from the incorrect
+notion that using a ``timespec`` rep in chrono actually makes it act as if it
+were an actual ``timespec``.
+
+Interactions with 32 bit ``time_t``
+-----------------------------------
+
+Up until now we've only be considering cases where ``time_t`` is 64 bits, but what
+about 32 bit systems/builds where ``time_t`` is 32 bits? (this is the common case
+for 32 bit builds).
+
+When ``time_t`` is 32 bits, we can implement ``file_time_type`` simply using 64-bit
+``long long``. There is no need to get either ``__int128_t`` or ``timespec`` emulation
+involved. And nor should we, as it would suffer from the numerous complications
+described by this paper.
+
+Obviously our implementation for 32-bit builds should act as similarly to the
+64-bit build as possible. Code which compiles in one, should compile in the other.
+This consideration is important when choosing between ``__int128_t`` and
+emulating ``timespec``. The solution which provides the most uniformity with
+the least eccentricity is the preferable one.
+
+Summary
+=======
+
+The ``file_time_type`` time point is used to represent the write times for files.
+Its job is to act as part of a C++ wrapper for less ideal system interfaces. The
+underlying filesystem uses the ``timespec`` struct for the same purpose.
+
+However, the initial implementation of ``file_time_type`` could not represent
+either the range or resolution of ``timespec``, making it unsuitable. Fixing
+this requires an implementation which uses more than 64 bits to store the
+time point.
+
+We primarily considered two solutions: Using ``__int128_t`` and using a
+arithmetic emulation of ``timespec``. Each has its pros and cons, and both
+come with more than one complication.
+
+The Potential Solutions
+-----------------------
+
+``long long`` - The Status Quo
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Pros:
+
+* As a type ``long long`` plays the nicest with others:
+
+  * It works with streaming operators and other library entities which support
+    builtin integer types, but don't support ``__int128_t``.
+  * Its the representation used by chrono's ``nanosecond`` and ``second`` typedefs.
+
+Cons:
+
+* It cannot provide the same resolution as ``timespec`` unless we limit it
+  to a range of +/- 300 years from the epoch.
+* It cannot provide the same range as ``timespec`` unless we limit its resolution
+  to seconds.
+* ``last_write_time`` has to report an error when the time reported by the filesystem
+  is unrepresentable.
+
+__int128_t
+~~~~~~~~~~~
+
+Pros:
+
+* It is an integer type.
+* It makes the implementation simple and efficient.
+* Acts exactly like other arithmetic types.
+* Can be implicitly converted to a builtin integer type by the user.
+
+  * This is important for doing things like:
+
+    .. code-block:: cpp
+
+      void c_interface_using_time_t(const char* p, time_t);
+
+      void foo(path p) {
+        file_time_type tp = last_write_time(p);
+        time_t secs = duration_cast<seconds>(tp.time_since_epoch()).count();
+        c_interface_using_time_t(p.c_str(), secs);
+      }
+
+Cons:
+
+* It isn't always available (but on 64 bit machines, it normally is).
+* It causes ``file_time_type`` to have a larger range than ``timespec``.
+* It doesn't always act the same as other builtin integer types. For example
+  with ``cout`` or ``to_string``.
+* Allows implicit truncation to 64 bit integers.
+* It can be implicitly converted to a builtin integer type by the user,
+  truncating its value.
+
+Arithmetic ``timespec`` Emulation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Pros:
+
+* It has the exact same range and resolution of ``timespec`` when representing
+  a nanosecond tick period.
+* It's always available, unlike ``__int128_t``.
+
+Cons:
+
+* It has a larger range when representing any period longer than a nanosecond.
+* Doesn't actually allow users to use it like a ``timespec``.
+* The required representation of using ``tv_sec`` to store the giga tick count
+  and ``tv_nsec`` to store the remainder adds nothing over a 128 bit integer,
+  but complicates a lot.
+* It isn't a builtin integer type, and can't be used anything like one.
+* Chrono can be made to work with it, but not nicely.
+* Emulating arithmetic classes come with their own host of problems regarding
+  overload resolution (Each operator needs three SFINAE constrained versions of
+  it in order to act like builtin integer types).
+* It offers little over simply using ``__int128_t``.
+* It acts the most differently than implementations using an actual integer type,
+  which has a high chance of breaking source compatibility.
+
+
+Selected Solution - Using ``__int128_t``
+=========================================
+
+The solution I selected for libc++ is using ``__int128_t`` when available,
+and otherwise falling back to using ``long long`` with nanosecond precision.
+
+When ``__int128_t`` is available, or when ``time_t`` is 32-bits, the implementation
+provides same resolution and a greater range than ``timespec``. Otherwise
+it still provides the same resolution, but is limited to a range of +/- 300
+years. This final case should be rather rare, as ``__int128_t``
+is normally available in 64-bit builds, and ``time_t`` is normally 32-bits
+during 32-bit builds.
+
+Although falling back to ``long long`` and nanosecond precision is less than
+ideal, it also happens to be the implementation provided by both libstdc++
+and MSVC. (So that makes it better, right?)
+
+Although the ``timespec`` emulation solution is feasible and would largely
+do what we want, it comes with too many complications, potential problems
+and discrepancies when compared to "normal" chrono time points and durations.
+
+An emulation of a builtin arithmetic type using a class is never going to act
+exactly the same, and the difference will be felt by users. It's not reasonable
+to expect them to tolerate and work around these differences. And once
+we commit to an ABI it will be too late to change. Committing to this seems
+risky.
+
+Therefore, ``__int128_t`` seems like the better solution.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/HeaderRemovalPolicy.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/HeaderRemovalPolicy.rst
new file mode 100644
index 0000000..02cbc16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/HeaderRemovalPolicy.rst
@@ -0,0 +1,61 @@
+=====================
+Header Removal Policy
+=====================
+
+Policy
+------
+
+Libc++ is in the process of splitting larger headers into smaller modular
+headers. This makes it possible to remove these large headers from other
+headers. For example, instead of including ``<algorithm>`` entirely it is
+possible to only include the headers for the algorithms used. When the
+Standard indirectly adds additional header includes, using the smaller headers
+aids reducing the growth of top-level headers. For example ``<atomic>`` uses
+``std::chrono::nanoseconds`` and included ``<chrono>``. In C++20 ``<chrono>``
+requires ``<format>`` which adds several other headers (like ``<string>``,
+``<optional>``, ``<tuple>``) which are not needed in ``<atomic>``.
+
+The benefit of using minimal headers is that the size of libc++'s top-level
+headers becomes smaller. This improves the compilation time when users include
+a top-level header. It also avoids header inclusion cycles and makes it easier
+to port headers to platforms with reduced functionality.
+
+A disadvantage is that users unknowingly depend on these transitive includes.
+Thus removing an include might break their build after upgrading a newer
+version of libc++. For example, ``<algorithm>`` is often forgotten but using
+algorithms will still work through those transitive includes. This problem is
+solved by modules, however in practice most people do not use modules (yet).
+
+To ease the removal of transitive includes in libc++, libc++ will remove
+unnecessary transitive includes in newly supported C++ versions. This means
+that users will have to fix their missing includes in order to upgrade to a
+newer version of the Standard. Libc++ also reserves the right to remove
+transitive includes at any other time, however new language versions will be
+used as a convenient way to perform bulk removals of transitive includes.
+
+For libc++ developers, this means that any transitive include removal must be
+guarded by something of the form:
+
+.. code-block:: cpp
+
+   #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
+   #  include <algorithm>
+   #  include <iterator>
+   #  include <utility>
+   #endif
+
+When users define ``_LIBCPP_REMOVE_TRANSITIVE_INCLUDES``, libc++ will not
+include transitive headers, regardless of the language version. This can be
+useful for users to aid the transition to a newer language version, or by users
+who simply want to make sure they include what they use in their code.
+
+
+Rationale
+---------
+
+Removing headers is not only an issue for software developers, but also for
+vendors. When a vendor updates libc++ several of their upstream packages might
+fail to compile, forcing them to fix these packages or file a bug with their
+upstream packages. Usually upgrading software to a new language standard is
+done explicitly by software developers. This means they most likely will
+discover and fix the missing includes, lessening the burden for the vendors.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/NoexceptPolicy.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/NoexceptPolicy.rst
new file mode 100644
index 0000000..74c8ca4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/NoexceptPolicy.rst
@@ -0,0 +1,13 @@
+===================
+``noexcept`` Policy
+===================
+
+Extended applications of ``noexcept``
+-------------------------------------
+
+As of version 13 libc++ may mark functions that do not throw (i.e.,
+"Throws: Nothing") as ``noexcept``. This has two primary consequences:
+first, functions might not report precondition violations by throwing.
+Second, user-provided functions, such as custom predicates or custom
+traits, which throw might not be propagated up to the caller (unless
+specified otherwise by the Standard).
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/ThreadingSupportAPI.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/ThreadingSupportAPI.rst
new file mode 100644
index 0000000..330ce74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/ThreadingSupportAPI.rst
@@ -0,0 +1,83 @@
+=====================
+Threading Support API
+=====================
+
+.. contents::
+   :local:
+
+Overview
+========
+
+Libc++ supports using multiple different threading models and configurations
+to implement the threading parts of libc++, including ``<thread>`` and ``<mutex>``.
+These different models provide entirely different interfaces from each
+other. To address this libc++ wraps the underlying threading API in a new and
+consistent API, which it uses internally to implement threading primitives.
+
+The ``<__threading_support>`` header is where libc++ defines its internal
+threading interface. It contains forward declarations of the internal threading
+interface as well as definitions for the interface.
+
+External Threading API and the ``<__external_threading>`` header
+================================================================
+
+In order to support vendors with custom threading API's libc++ allows the
+entire internal threading interface to be provided by an external,
+vendor provided, header.
+
+When ``_LIBCPP_HAS_THREAD_API_EXTERNAL`` is defined the ``<__threading_support>``
+header simply forwards to the ``<__external_threading>`` header (which must exist).
+It is expected that the ``<__external_threading>`` header provide the exact
+interface normally provided by ``<__threading_support>``.
+
+External Threading Library
+==========================
+
+libc++ can be compiled with its internal threading API delegating to an external
+library. Such a configuration is useful for library vendors who wish to
+distribute a thread-agnostic libc++ library, where the users of the library are
+expected to provide the implementation of the libc++ internal threading API.
+
+On a production setting, this would be achieved through a custom
+``<__external_threading>`` header, which declares the libc++ internal threading
+API but leaves out the implementation.
+
+The ``-DLIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY`` option allows building libc++ in
+such a configuration while allowing it to be tested on a platform that supports
+any of the threading systems (e.g. pthread) supported in ``__threading_support``
+header. Therefore, the main purpose of this option is to allow testing of this
+particular configuration of the library without being tied to a vendor-specific
+threading system. This option is only meant to be used by libc++ library
+developers.
+
+Threading Configuration Macros
+==============================
+
+**_LIBCPP_HAS_NO_THREADS**
+  This macro is defined when libc++ is built without threading support. It
+  should not be manually defined by the user.
+
+**_LIBCPP_HAS_THREAD_API_EXTERNAL**
+  This macro is defined when libc++ should use the ``<__external_threading>``
+  header to provide the internal threading API. This macro overrides
+  ``_LIBCPP_HAS_THREAD_API_PTHREAD``.
+
+**_LIBCPP_HAS_THREAD_API_PTHREAD**
+  This macro is defined when libc++ should use POSIX threads to implement the
+  internal threading API.
+
+**_LIBCPP_HAS_THREAD_API_WIN32**
+  This macro is defined when libc++ should use Win32 threads to implement the
+  internal threading API.
+
+**_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL**
+  This macro is defined when libc++ expects the definitions of the internal
+  threading API to be provided by an external library. When defined
+  ``<__threading_support>`` will only provide the forward declarations and
+  typedefs for the internal threading API.
+
+**_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL**
+  This macro is used to build an external threading library using the
+  ``<__threading_support>``. Specifically it exposes the threading API
+  definitions in ``<__threading_support>`` as non-inline definitions meant to
+  be compiled into a library.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/UniquePtrTrivialAbi.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/UniquePtrTrivialAbi.rst
new file mode 100644
index 0000000..1af0b34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/UniquePtrTrivialAbi.rst
@@ -0,0 +1,149 @@
+=============================================
+Enable std::unique_ptr [[clang::trivial_abi]]
+=============================================
+
+Background
+==========
+
+Consider the follow snippets
+
+
+.. code-block:: cpp
+
+    void raw_func(Foo* raw_arg) { ... }
+    void smart_func(std::unique_ptr<Foo> smart_arg) { ... }
+
+    Foo* raw_ptr_retval() { ... }
+    std::unique_ptr<Foo*> smart_ptr_retval() { ... }
+
+
+
+The argument ``raw_arg`` could be passed in a register but ``smart_arg`` could not, due to current
+implementation.
+
+Specifically, in the ``smart_arg`` case, the caller secretly constructs a temporary ``std::unique_ptr``
+in its stack-frame, and then passes a pointer to it to the callee in a hidden parameter.
+Similarly, the return value from ``smart_ptr_retval`` is secretly allocated in the caller and
+passed as a secret reference to the callee.
+
+
+Goal
+===================
+
+``std::unique_ptr`` is passed directly in a register.
+
+Design
+======
+
+* Annotate the two definitions of ``std::unique_ptr``  with ``clang::trivial_abi`` attribute.
+* Put the attribute behind a flag because this change has potential compilation and runtime breakages.
+
+
+This comes with some side effects:
+
+* ``std::unique_ptr`` parameters will now be destroyed by callees, rather than callers.
+  It is worth noting that destruction by callee is not unique to the use of trivial_abi attribute.
+  In most Microsoft's ABIs, arguments are always destroyed by the callee.
+
+  Consequently, this may change the destruction order for function parameters to an order that is non-conforming to the standard.
+  For example:
+
+
+  .. code-block:: cpp
+
+    struct A { ~A(); };
+    struct B { ~B(); };
+    struct C { C(A, unique_ptr<B>, A) {} };
+    C c{{}, make_unique<B>, {}};
+
+
+  In a conforming implementation, the destruction order for C::C's parameters is required to be ``~A(), ~B(), ~A()`` but with this mode enabled, we'll instead see ``~B(), ~A(), ~A()``.
+
+* Reduced code-size.
+
+
+Performance impact
+------------------
+
+Google has measured performance improvements of up to 1.6% on some large server macrobenchmarks, and a small reduction in binary sizes.
+
+This also affects null pointer optimization
+
+Clang's optimizer can now figure out when a `std::unique_ptr` is known to contain *non*-null.
+(Actually, this has been a *missed* optimization all along.)
+
+
+.. code-block:: cpp
+
+    struct Foo {
+      ~Foo();
+    };
+    std::unique_ptr<Foo> make_foo();
+    void do_nothing(const Foo&)
+
+    void bar() {
+      auto x = make_foo();
+      do_nothing(*x);
+    }
+
+
+With this change, ``~Foo()`` will be called even if ``make_foo`` returns ``unique_ptr<Foo>(nullptr)``.
+The compiler can now assume that ``x.get()`` cannot be null by the end of ``bar()``, because
+the deference of ``x`` would be UB if it were ``nullptr``. (This dereference would not have caused
+a segfault, because no load is generated for dereferencing a pointer to a reference. This can be detected with ``-fsanitize=null``).
+
+
+Potential breakages
+-------------------
+
+The following breakages were discovered by enabling this change and fixing the resulting issues in a large code base.
+
+- Compilation failures
+
+ - Function definitions now require complete type ``T`` for parameters with type ``std::unique_ptr<T>``. The following code will no longer compile.
+
+   .. code-block:: cpp
+
+       class Foo;
+       void func(std::unique_ptr<Foo> arg) { /* never use `arg` directly */ }
+
+ - Fix: Remove forward-declaration of ``Foo`` and include its proper header.
+
+- Runtime Failures
+
+ - Lifetime of ``std::unique_ptr<>`` arguments end earlier (at the end of the callee's body, rather than at the end of the full expression containing the call).
+
+   .. code-block:: cpp
+
+     util::Status run_worker(std::unique_ptr<Foo>);
+     void func() {
+        std::unique_ptr<Foo> smart_foo = ...;
+        Foo* owned_foo = smart_foo.get();
+        // Currently, the following would "work" because the argument to run_worker() is deleted at the end of func()
+        // With the new calling convention, it will be deleted at the end of run_worker(),
+        // making this an access to freed memory.
+        owned_foo->Bar(run_worker(std::move(smart_foo)));
+                  ^
+                 // <<<Crash expected here
+     }
+
+ - Lifetime of local *returned* ``std::unique_ptr<>`` ends earlier.
+
+   Spot the bug:
+
+    .. code-block:: cpp
+
+     std::unique_ptr<Foo> create_and_subscribe(Bar* subscriber) {
+       auto foo = std::make_unique<Foo>();
+       subscriber->sub([&foo] { foo->do_thing();} );
+       return foo;
+     }
+
+   One could point out this is an obvious stack-use-after return bug.
+   With the current calling convention, running this code with ASAN enabled, however, would not yield any "issue".
+   So is this a bug in ASAN? (Spoiler: No)
+
+   This currently would "work" only because the storage for ``foo`` is in the caller's stackframe.
+   In other words, ``&foo`` in callee and ``&foo`` in the caller are the same address.
+
+ASAN can be used to detect both of these.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/UnspecifiedBehaviorRandomization.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/UnspecifiedBehaviorRandomization.rst
new file mode 100644
index 0000000..7e92e27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/UnspecifiedBehaviorRandomization.rst
@@ -0,0 +1,86 @@
+==================================
+Unspecified Behavior Randomization
+==================================
+
+Background
+==========
+
+Consider the follow snippet which steadily happens in tests:
+
+
+.. code-block:: cpp
+
+    std::vector<std::pair<int, int>> v(SomeData());
+    std::sort(v.begin(), v.end(), [](const auto& lhs, const auto& rhs) {
+       return lhs.first < rhs.first;
+    });
+
+Under this assumption all elements in the vector whose first elements are equal
+do not guarantee any order. Unfortunately, this prevents libcxx introducing
+other implementatiosn because tests might silently fail and the users might
+heavily depend on the stability of implementations.
+
+Goal
+===================
+
+Provide functionality for randomizing the unspecified behavior so that the users
+can test and migrate their components and libcxx can introduce new sorting
+algorithms and optimizations to the containers.
+
+For example, as of LLVM version 13, libcxx sorting algorithm takes
+`O(n^2) worst case <https://llvm.org/PR20837>`_ but according
+to the standard its worst case should be `O(n log n)`. This effort helps users
+to gradually fix their tests while updating to new faster algorithms.
+
+Design
+======
+
+* Introduce new macro ``_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY`` which should
+  be a part of the libcxx config.
+* This macro randomizes the unspecified behavior of algorithms and containers.
+  For example, for sorting algorithm the input range is shuffled and then
+  sorted.
+* This macro is off by default because users should enable it only for testing
+  purposes and/or migrations if they happen to libcxx.
+* This feature is only available for C++11 and further because of
+  ``std::shuffle`` availability.
+* We may use `ASLR <https://en.wikipedia.org/wiki/Address_space_layout_randomization>`_ or
+  static ``std::random_device`` for seeding the random number generator. This
+  guarantees the same stability guarantee within a run but not through different
+  runs, for example, for tests become flaky and eventually be seen as broken.
+  For platforms which do not support ASLR, the seed is fixed during build.
+* The users can fix the seed of the random number generator by providing
+  ``_LIBCPP_RANDOMIZE_UNSPECIFIED_STABILITY_SEED=seed`` definition.
+
+This comes with some side effects if any of the flags is on:
+
+* Computation penalty, we think users are OK with that if they use this feature.
+* Non reproducible results if they don't use the fixed seed.
+
+
+Impact
+------------------
+
+Google has measured couple of thousands of tests to be dependent on the
+stability of sorting and selection algorithms. As we also plan on updating
+(or least, providing under flag more) sorting algorithms, this effort helps
+doing it gradually and sustainably. This is also bad for users to depend on the
+unspecified behavior in their tests, this effort helps to turn this flag in
+debug mode.
+
+Potential breakages
+-------------------
+
+None if the flag is off. If the flag is on, it may lead to some non-reproducible
+results, for example, for caching.
+
+Currently supported randomization
+---------------------------------
+
+* ``std::sort``, there is no guarantee on the order of equal elements
+* ``std::partial_sort``, there is no guarantee on the order of equal elements and
+   on the order of the remaining part
+* ``std::nth_element``, there is no guarantee on the order from both sides of the
+   partition
+
+Patches welcome.
diff --git a/app/src/main/cpp/libcxx/docs/DesignDocs/VisibilityMacros.rst b/app/src/main/cpp/libcxx/docs/DesignDocs/VisibilityMacros.rst
new file mode 100644
index 0000000..d1c1626
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/DesignDocs/VisibilityMacros.rst
@@ -0,0 +1,167 @@
+========================
+Symbol Visibility Macros
+========================
+
+.. contents::
+   :local:
+
+.. _visibility-macros:
+
+Overview
+========
+
+Libc++ uses various "visibility" macros in order to provide a stable ABI in
+both the library and the headers. These macros work by changing the
+visibility and inlining characteristics of the symbols they are applied to.
+
+Visibility Macros
+=================
+
+**_LIBCPP_HIDDEN**
+  Mark a symbol as hidden so it will not be exported from shared libraries.
+
+**_LIBCPP_FUNC_VIS**
+  Mark a symbol as being exported by the libc++ library. This attribute must
+  be applied to the declaration of all functions exported by the libc++ dylib.
+
+**_LIBCPP_EXPORTED_FROM_ABI**
+  Mark a symbol as being exported by the libc++ library. This attribute may
+  only be applied to objects defined in the libc++ runtime library. On Windows,
+  this macro applies `dllimport`/`dllexport` to the symbol, and on other
+  platforms it gives the symbol default visibility.
+
+**_LIBCPP_OVERRIDABLE_FUNC_VIS**
+  Mark a symbol as being exported by the libc++ library, but allow it to be
+  overridden locally. On non-Windows, this is equivalent to `_LIBCPP_FUNC_VIS`.
+  This macro is applied to all `operator new` and `operator delete` overloads.
+
+  **Windows Behavior**: Any symbol marked `dllimport` cannot be overridden
+  locally, since `dllimport` indicates the symbol should be bound to a separate
+  DLL. All `operator new` and `operator delete` overloads are required to be
+  locally overridable, and therefore must not be marked `dllimport`. On Windows,
+  this macro therefore expands to `__declspec(dllexport)` when building the
+  library and has an empty definition otherwise.
+
+**_LIBCPP_HIDE_FROM_ABI**
+  Mark a function as not being part of the ABI of any final linked image that
+  uses it.
+
+**_LIBCPP_INLINE_VISIBILITY**
+  Historical predecessor of ``_LIBCPP_HIDE_FROM_ABI`` -- please use
+  ``_LIBCPP_HIDE_FROM_ABI`` instead.
+
+**_LIBCPP_HIDE_FROM_ABI_AFTER_V1**
+  Mark a function as being hidden from the ABI (per `_LIBCPP_HIDE_FROM_ABI`)
+  when libc++ is built with an ABI version after ABI v1. This macro is used to
+  maintain ABI compatibility for symbols that have been historically exported
+  by libc++ in v1 of the ABI, but that we don't want to export in the future.
+
+  This macro works as follows. When we build libc++, we either hide the symbol
+  from the ABI (if the symbol is not part of the ABI in the version we're
+  building), or we leave it included. From user code (i.e. when we're not
+  building libc++), the macro always marks symbols as internal so that programs
+  built using new libc++ headers stop relying on symbols that are removed from
+  the ABI in a future version. Each time we release a new stable version of the
+  ABI, we should create a new _LIBCPP_HIDE_FROM_ABI_AFTER_XXX macro, and we can
+  use it to start removing symbols from the ABI after that stable version.
+
+**_LIBCPP_TYPE_VIS**
+  Mark a type's typeinfo, vtable and members as having default visibility.
+  This attribute cannot be used on class templates.
+
+**_LIBCPP_TEMPLATE_VIS**
+  Mark a type's typeinfo and vtable as having default visibility.
+  This macro has no effect on the visibility of the type's member functions.
+
+  **GCC Behavior**: GCC does not support Clang's `type_visibility(...)`
+  attribute. With GCC the `visibility(...)` attribute is used and member
+  functions are affected.
+
+  **Windows Behavior**: DLLs do not support dllimport/export on class templates.
+  The macro has an empty definition on this platform.
+
+
+**_LIBCPP_ENUM_VIS**
+  Mark the typeinfo of an enum as having default visibility. This attribute
+  should be applied to all enum declarations.
+
+  **Windows Behavior**: DLLs do not support importing or exporting enumeration
+  typeinfo. The macro has an empty definition on this platform.
+
+  **GCC Behavior**: GCC un-hides the typeinfo for enumerations by default, even
+  if `-fvisibility=hidden` is specified. Additionally applying a visibility
+  attribute to an enum class results in a warning. The macro has an empty
+  definition with GCC.
+
+**_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS**
+  Mark the member functions, typeinfo, and vtable of the type named in
+  an extern template declaration as being exported by the libc++ library.
+  This attribute must be specified on all extern class template declarations.
+
+  This macro is used to override the `_LIBCPP_TEMPLATE_VIS` attribute
+  specified on the primary template and to export the member functions produced
+  by the explicit instantiation in the dylib.
+
+  **Windows Behavior**: `extern template` and `dllexport` are fundamentally
+  incompatible *on a class template* on Windows; the former suppresses
+  instantiation, while the latter forces it. Specifying both on the same
+  declaration makes the class template be instantiated, which is not desirable
+  inside headers. This macro therefore expands to `dllimport` outside of libc++
+  but nothing inside of it (rather than expanding to `dllexport`); instead, the
+  explicit instantiations themselves are marked as exported. Note that this
+  applies *only* to extern *class* templates. Extern *function* templates obey
+  regular import/export semantics, and applying `dllexport` directly to the
+  extern template declaration (i.e. using `_LIBCPP_FUNC_VIS`) is the correct
+  thing to do for them.
+
+**_LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS**
+  Mark the member functions, typeinfo, and vtable of an explicit instantiation
+  of a class template as being exported by the libc++ library. This attribute
+  must be specified on all class template explicit instantiations.
+
+  It is only necessary to mark the explicit instantiation itself (as opposed to
+  the extern template declaration) as exported on Windows, as discussed above.
+  On all other platforms, this macro has an empty definition.
+
+**_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS**
+  Mark a symbol as hidden so it will not be exported from shared libraries. This
+  is intended specifically for method templates of either classes marked with
+  `_LIBCPP_TYPE_VIS` or classes with an extern template instantiation
+  declaration marked with `_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS`.
+
+  When building libc++ with hidden visibility, we want explicit template
+  instantiations to export members, which is consistent with existing Windows
+  behavior. We also want classes annotated with `_LIBCPP_TYPE_VIS` to export
+  their members, which is again consistent with existing Windows behavior.
+  Both these changes are necessary for clients to be able to link against a
+  libc++ DSO built with hidden visibility without encountering missing symbols.
+
+  An unfortunate side effect, however, is that method templates of classes
+  either marked `_LIBCPP_TYPE_VIS` or with extern template instantiation
+  declarations marked with `_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS` also get default
+  visibility when instantiated. These methods are often implicitly instantiated
+  inside other libraries which use the libc++ headers, and will therefore end up
+  being exported from those libraries, since those implicit instantiations will
+  receive default visibility. This is not acceptable for libraries that wish to
+  control their visibility, and led to PR30642.
+
+  Consequently, all such problematic method templates are explicitly marked
+  either hidden (via this macro) or inline, so that they don't leak into client
+  libraries. The problematic methods were found by running
+  `bad-visibility-finder <https://github.com/smeenai/bad-visibility-finder>`_
+  against the libc++ headers after making `_LIBCPP_TYPE_VIS` and
+  `_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS` expand to default visibility.
+
+**_LIBCPP_EXCEPTION_ABI**
+  Mark the member functions, typeinfo, and vtable of the type as being exported
+  by the libc++ library. This macro must be applied to all *exception types*.
+  Exception types should be defined directly in namespace `std` and not the
+  versioning namespace. This allows throwing and catching some exception types
+  between libc++ and libstdc++.
+
+Links
+=====
+
+* `[cfe-dev] Visibility in libc++ - 1 <http://lists.llvm.org/pipermail/cfe-dev/2013-July/030610.html>`_
+* `[cfe-dev] Visibility in libc++ - 2 <http://lists.llvm.org/pipermail/cfe-dev/2013-August/031195.html>`_
+* `[libcxx] Visibility fixes for Windows <http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20130805/085461.html>`_
diff --git a/app/src/main/cpp/libcxx/docs/FeatureTestMacroTable.rst b/app/src/main/cpp/libcxx/docs/FeatureTestMacroTable.rst
new file mode 100644
index 0000000..b46fc8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/FeatureTestMacroTable.rst
@@ -0,0 +1,367 @@
+.. _FeatureTestMacroTable:
+
+==========================
+Feature Test Macro Support
+==========================
+
+.. contents::
+   :local:
+
+Overview
+========
+
+This file documents the feature test macros currently supported by libc++.
+
+.. _feature-status:
+
+Status
+======
+
+.. table:: Current Status
+    :name: feature-status-table
+    :widths: auto
+
+    ================================================= =================
+    Macro Name                                        Value
+    ================================================= =================
+    **C++ 14**
+    -------------------------------------------------------------------
+    ``__cpp_lib_chrono_udls``                         ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_complex_udls``                        ``201309L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_exchange_function``                   ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_generic_associative_lookup``          ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_integer_sequence``                    ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_integral_constant_callable``          ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_final``                            ``201402L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_null_pointer``                     ``201309L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_make_reverse_iterator``               ``201402L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_make_unique``                         ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_null_iterators``                      ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_quoted_string_io``                    ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_result_of_sfinae``                    ``201210L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_robust_nonmodifying_seq_ops``         ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_shared_timed_mutex``                  ``201402L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_string_udls``                         ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_transformation_trait_aliases``        ``201304L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_transparent_operators``               ``201210L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_tuple_element_t``                     ``201402L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_tuples_by_type``                      ``201304L``
+    ------------------------------------------------- -----------------
+    **C++ 17**
+    -------------------------------------------------------------------
+    ``__cpp_lib_addressof_constexpr``                 ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_allocator_traits_is_always_equal``    ``201411L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_any``                                 ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_apply``                               ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_array_constexpr``                     ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_as_const``                            ``201510L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_is_always_lock_free``          ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_bool_constant``                       ``201505L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_boyer_moore_searcher``                ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_byte``                                ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_chrono``                              ``201611L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_clamp``                               ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_enable_shared_from_this``             ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_execution``                           *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_filesystem``                          ``201703L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_gcd_lcm``                             ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_hardware_interference_size``          ``201703L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_has_unique_object_representations``   ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_hypot``                               ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_incomplete_container_elements``       ``201505L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_invoke``                              ``201411L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_aggregate``                        ``201703L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_invocable``                        ``201703L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_swappable``                        ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_launder``                             ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_logical_traits``                      ``201510L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_make_from_tuple``                     ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_map_try_emplace``                     ``201411L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_math_special_functions``              *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_memory_resource``                     ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_node_extract``                        ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_nonmember_container_access``          ``201411L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_not_fn``                              ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_optional``                            ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_parallel_algorithm``                  *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_raw_memory_algorithms``               ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_sample``                              ``201603L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_scoped_lock``                         ``201703L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_shared_mutex``                        ``201505L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_shared_ptr_arrays``                   ``201611L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_shared_ptr_weak_type``                ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_string_view``                         ``201606L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_to_chars``                            *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_transparent_operators``               ``201510L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_type_trait_variable_templates``       ``201510L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_uncaught_exceptions``                 ``201411L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_unordered_map_try_emplace``           ``201411L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_variant``                             ``202102L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_void_t``                              ``201411L``
+    ------------------------------------------------- -----------------
+    **C++ 20**
+    -------------------------------------------------------------------
+    ``__cpp_lib_array_constexpr``                     ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_assume_aligned``                      ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_flag_test``                    ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_float``                        *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_lock_free_type_aliases``       ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_ref``                          *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_shared_ptr``                   *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_value_initialization``         ``201911L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_wait``                         ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_barrier``                             ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_bind_front``                          ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_bit_cast``                            ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_bitops``                              *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_bounded_array_traits``                ``201902L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_char8_t``                             ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_concepts``                            ``202002L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_algorithms``                ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_complex``                   ``201711L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_dynamic_alloc``             ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_functional``                ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_iterator``                  ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_memory``                    ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_numeric``                   ``201911L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_string``                    ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_string_view``               ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_tuple``                     ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_utility``                   ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_vector``                    ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_coroutine``                           ``201902L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_destroying_delete``                   ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_endian``                              ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_erase_if``                            ``202002L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_execution``                           *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_format``                              *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_generic_unordered_lookup``            ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_int_pow2``                            ``202002L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_integer_comparison_functions``        ``202002L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_interpolate``                         ``201902L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_constant_evaluated``               ``201811L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_layout_compatible``                *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_nothrow_convertible``              ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_pointer_interconvertible``         *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_jthread``                             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_latch``                               ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_list_remove_return_type``             ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_math_constants``                      ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_polymorphic_allocator``               ``201902L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges``                              ``202106L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_remove_cvref``                        ``201711L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_semaphore``                           ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_shared_ptr_arrays``                   ``201707L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_shift``                               ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_smart_ptr_for_overwrite``             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_source_location``                     ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_span``                                ``202002L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ssize``                               ``201902L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_starts_ends_with``                    ``201711L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_string_view``                         ``201803L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_syncbuf``                             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_three_way_comparison``                *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_to_address``                          ``201711L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_to_array``                            ``201907L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_type_identity``                       ``201806L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_unwrap_ref``                          ``201811L``
+    ------------------------------------------------- -----------------
+    **C++ 2b**
+    -------------------------------------------------------------------
+    ``__cpp_lib_adaptor_iterator_pair_constructor``   ``202106L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_allocate_at_least``                   ``202106L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_associative_heterogeneous_erasure``   *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_bind_back``                           *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_byteswap``                            ``202110L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_bitset``                    ``202207L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_charconv``                  ``202207L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_cmath``                     *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_memory``                    ``202202L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_typeinfo``                  *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_expected``                            ``202202L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_forward_like``                        ``202207L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_invoke_r``                            *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_is_scoped_enum``                      ``202011L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_move_only_function``                  *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_optional``                            ``202110L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_out_ptr``                             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_chunk``                        *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_chunk_by``                     *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_iota``                         *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_join_with``                    *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_slide``                        *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_starts_ends_with``             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_to_container``                 *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_zip``                          *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_reference_from_temporary``            *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_spanstream``                          *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_stacktrace``                          *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_stdatomic_h``                         ``202011L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_string_contains``                     ``202011L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_string_resize_and_overwrite``         ``202110L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_to_underlying``                       ``202102L``
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_unreachable``                         ``202202L``
+    ================================================= =================
+
diff --git a/app/src/main/cpp/libcxx/docs/Helpers/Styles.rst b/app/src/main/cpp/libcxx/docs/Helpers/Styles.rst
new file mode 100644
index 0000000..31352ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Helpers/Styles.rst
@@ -0,0 +1,57 @@
+.. raw:: html
+
+      <style type="text/css">
+        td { text-align: left; }
+        .notstarted { opacity: 60%; }
+        .nothingtodo {
+            background-color: #99FF99;
+            font-style: italic;
+         }
+        .inprogress {
+            background-color: #FFFF99;
+            font-style: italic;
+         }
+        .inreview { background-color: #FFFF99; }
+        .partial {
+            background-color: #2CCCFF;
+            font-style: italic;
+         }
+        .complete { background-color: #99FF99; }
+        .chrono { background-color: #D8BFD8; }
+        .format { background-color: #FFE4B5; }
+        .ranges { background-color: #7FFFD4; }
+        .spaceship { background-color: #B0E0E6; }
+        .fc { background-color: #8EAF63; white-space:nowrap; }
+        .concurrency { background-color: #909090; white-space:nowrap; }
+      </style>
+
+.. role:: notstarted
+.. role:: nothingtodo
+.. role:: inprogress
+.. role:: inreview
+.. role:: partial
+.. role:: complete
+
+.. |Not Started| replace:: :notstarted:`Not Started`
+.. |Nothing To Do| replace:: :nothingtodo:`Nothing To Do`
+.. |In Progress| replace:: :inprogress:`In Progress`
+.. |Review| replace:: :inreview:`Review`
+.. |Partial| replace:: :partial:`Partial`
+.. |Complete| replace:: :complete:`Complete`
+
+.. role:: chrono
+.. role:: format
+.. role:: ranges
+.. role:: spaceship
+.. role:: fc
+.. role:: concurrency
+
+.. |chrono| replace:: :chrono:`chrono`
+.. |format| replace:: :format:`format`
+.. |ranges| replace:: :ranges:`ranges`
+.. |spaceship| replace:: :spaceship:`spaceship`
+.. |flat_containers| replace:: :fc:`flat containers`
+.. |concurrency TS| replace:: :concurrency:`concurrency TS`
+
+.. |sect| unicode:: U+00A7
+.. |hellip| unicode:: U+2026
diff --git a/app/src/main/cpp/libcxx/docs/README.txt b/app/src/main/cpp/libcxx/docs/README.txt
new file mode 100644
index 0000000..ff7e71f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/README.txt
@@ -0,0 +1,17 @@
+libc++ Documentation
+====================
+
+The libc++ documentation is written using the Sphinx documentation generator. It is
+currently tested with Sphinx 1.1.3.
+
+To build the documents into html configure libc++ with the following cmake options:
+
+  * -DLLVM_ENABLE_SPHINX=ON
+  * -DLIBCXX_INCLUDE_DOCS=ON
+
+After configuring libc++ with these options the make rule `docs-libcxx-html`
+should be available.
+
+The documentation in this directory is published at https://libcxx.llvm.org. It is kept up-to-date
+by a build bot: https://lab.llvm.org/buildbot/#/builders/publish-sphinx-docs. If you notice that the
+documentation is not updating anymore, please contact one of the maintainers.
diff --git a/app/src/main/cpp/libcxx/docs/ReleaseNotes.rst b/app/src/main/cpp/libcxx/docs/ReleaseNotes.rst
new file mode 100644
index 0000000..88a4859
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/ReleaseNotes.rst
@@ -0,0 +1,61 @@
+=========================================
+Libc++ 17.0.0 (In-Progress) Release Notes
+=========================================
+
+.. contents::
+   :local:
+   :depth: 2
+
+Written by the `Libc++ Team <https://libcxx.llvm.org>`_
+
+.. warning::
+
+   These are in-progress notes for the upcoming libc++ 17 release.
+   Release notes for previous releases can be found on
+   `the Download Page <https://releases.llvm.org/download.html>`_.
+
+Introduction
+============
+
+This document contains the release notes for the libc++ C++ Standard Library,
+part of the LLVM Compiler Infrastructure, release 17.0.0. Here we describe the
+status of libc++ in some detail, including major improvements from the previous
+release and new feature work. For the general LLVM release notes, see `the LLVM
+documentation <https://llvm.org/docs/ReleaseNotes.html>`_. All LLVM releases may
+be downloaded from the `LLVM releases web site <https://llvm.org/releases/>`_.
+
+For more information about libc++, please see the `Libc++ Web Site
+<https://libcxx.llvm.org>`_ or the `LLVM Web Site <https://llvm.org>`_.
+
+Note that if you are reading this file from a Git checkout or the
+main Libc++ web page, this document applies to the *next* release, not
+the current one. To see the release notes for a specific release, please
+see the `releases page <https://llvm.org/releases/>`_.
+
+What's New in Libc++ 17.0.0?
+============================
+
+Implemented Papers
+------------------
+
+Improvements and New Features
+-----------------------------
+
+Deprecations and Removals
+-------------------------
+
+Upcoming Deprecations and Removals
+----------------------------------
+
+- The ``_LIBCPP_AVAILABILITY_CUSTOM_VERBOSE_ABORT_PROVIDED`` macro will not be honored anymore in LLVM 18.
+  Please see the updated documentation about the safe libc++ mode and in particular the ``_LIBCPP_VERBOSE_ABORT``
+  macro for details.
+
+API Changes
+-----------
+
+ABI Affecting Changes
+---------------------
+
+Build System Changes
+--------------------
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx14.rst b/app/src/main/cpp/libcxx/docs/Status/Cxx14.rst
new file mode 100644
index 0000000..0557bdc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx14.rst
@@ -0,0 +1,50 @@
+.. _cxx14-status:
+
+================================
+libc++ C++14 Status
+================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+================================
+
+In April 2013, the C++ standard committee approved the draft for the next version of the C++ standard, initially known as "C++1y".
+
+The draft standard includes papers and issues that were voted on at the previous three meetings (Kona, Portland, and Bristol).
+
+In August 2014, this draft was approved by ISO as C++14.
+
+This page shows the status of libc++; the status of clang's support of the language features is `here <https://clang.llvm.org/cxx_status.html#cxx14>`__.
+
+The groups that have contributed papers:
+
+-  CWG - Core Language Working group
+-  LWG - Library working group
+-  SG1 - Study group #1 (Concurrency working group)
+
+
+.. _paper-status-cxx14:
+
+Paper Status
+====================================
+
+.. csv-table::
+   :file: Cxx14Papers.csv
+   :header-rows: 1
+   :widths: auto
+
+
+.. _issues-status-cxx14:
+
+Library Working Group Issues Status
+====================================
+
+.. csv-table::
+   :file: Cxx14Issues.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx14Issues.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx14Issues.csv
new file mode 100644
index 0000000..02da3e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx14Issues.csv
@@ -0,0 +1,157 @@
+"Issue #","Issue Name","Meeting","Status"
+"`1214 <https://wg21.link/lwg1214>`__","Insufficient/inconsistent key immutability requirements for associative containers","Kona","|Complete|"
+"`2009 <https://wg21.link/lwg2009>`__","Reporting out-of-bound values on numeric string conversions","Kona","|Complete|"
+"`2010 <https://wg21.link/lwg2010>`__","``is_*``\  traits for binding operations can't be meaningfully specialized","Kona","|Complete|"
+"`2015 <https://wg21.link/lwg2015>`__","Incorrect pre-conditions for some type traits","Kona","|Complete|"
+"`2021 <https://wg21.link/lwg2021>`__","Further incorrect usages of result_of","Kona","|Complete|"
+"`2028 <https://wg21.link/lwg2028>`__","messages_base::catalog overspecified","Kona","|Complete|"
+"`2033 <https://wg21.link/lwg2033>`__","Preconditions of reserve, shrink_to_fit, and resize functions","Kona","|Complete|"
+"`2039 <https://wg21.link/lwg2039>`__","Issues with std::reverse and std::copy_if","Kona","|Complete|"
+"`2044 <https://wg21.link/lwg2044>`__","No definition of ""Stable"" for copy algorithms","Kona","|Complete|"
+"`2045 <https://wg21.link/lwg2045>`__","forward_list::merge and forward_list::splice_after with unequal allocators","Kona","|Complete|"
+"`2047 <https://wg21.link/lwg2047>`__","Incorrect ""mixed"" move-assignment semantics of unique_ptr","Kona","|Complete|"
+"`2050 <https://wg21.link/lwg2050>`__","Unordered associative containers do not use allocator_traits to define member types","Kona","|Complete|"
+"`2053 <https://wg21.link/lwg2053>`__","Errors in regex bitmask types","Kona","|Complete|"
+"`2061 <https://wg21.link/lwg2061>`__","make_move_iterator and arrays","Kona","|Complete|"
+"`2064 <https://wg21.link/lwg2064>`__","More noexcept issues in basic_string","Kona","|Complete|"
+"`2065 <https://wg21.link/lwg2065>`__","Minimal allocator interface","Kona","|Complete|"
+"`2067 <https://wg21.link/lwg2067>`__","packaged_task should have deleted copy c'tor with const parameter","Kona","|Complete|"
+"`2069 <https://wg21.link/lwg2069>`__","Inconsistent exception spec for basic_string move constructor","Kona","|Complete|"
+"`2096 <https://wg21.link/lwg2096>`__","Incorrect constraints of future::get in regard to MoveAssignable","Kona","|Complete|"
+"`2102 <https://wg21.link/lwg2102>`__","Why is std::launch an implementation-defined type?","Kona","|Complete|"
+"","","",""
+"`2071 <https://wg21.link/lwg2071>`__","std::valarray move-assignment","Portland","|Complete|"
+"`2074 <https://wg21.link/lwg2074>`__","Off by one error in std::reverse_copy","Portland","|Complete|"
+"`2081 <https://wg21.link/lwg2081>`__","Allocator requirements should include CopyConstructible","Portland","|Complete|"
+"`2083 <https://wg21.link/lwg2083>`__","const-qualification on weak_ptr::owner_before","Portland","|Complete|"
+"`2086 <https://wg21.link/lwg2086>`__","Overly generic type support for math functions","Portland","|Complete|"
+"`2099 <https://wg21.link/lwg2099>`__","Unnecessary constraints of va_start() usage","Portland","|Complete|"
+"`2103 <https://wg21.link/lwg2103>`__","std::allocator_traits<std::allocator<T>>::propagate_on_container_move_assignment","Portland","|Complete|"
+"`2105 <https://wg21.link/lwg2105>`__","Inconsistent requirements on ``const_iterator``'s value_type","Portland","|Complete|"
+"`2110 <https://wg21.link/lwg2110>`__","remove can't swap but note says it might","Portland","|Complete|"
+"`2123 <https://wg21.link/lwg2123>`__","merge() allocator requirements for lists versus forward lists","Portland","|Complete|"
+"`2005 <https://wg21.link/lwg2005>`__","unordered_map::insert(T&&) protection should apply to map too","Portland","|Complete|"
+"`2011 <https://wg21.link/lwg2011>`__","Unexpected output required of strings","Portland","|Complete|"
+"`2048 <https://wg21.link/lwg2048>`__","Unnecessary mem_fn overloads","Portland","|Complete|"
+"`2049 <https://wg21.link/lwg2049>`__","``is_destructible``\  is underspecified","Portland","|Complete|"
+"`2056 <https://wg21.link/lwg2056>`__","future_errc enums start with value 0 (invalid value for broken_promise)","Portland","|Complete|"
+"`2058 <https://wg21.link/lwg2058>`__","valarray and begin/end","Portland","|Complete|"
+"","","",""
+"`2091 <https://wg21.link/lwg2091>`__","Misplaced effect in m.try_lock_for()","Bristol","|Complete|"
+"`2092 <https://wg21.link/lwg2092>`__","Vague Wording for condition_variable_any","Bristol","|Complete|"
+"`2093 <https://wg21.link/lwg2093>`__","Throws clause of condition_variable::wait with predicate","Bristol","|Complete|"
+"`2094 <https://wg21.link/lwg2094>`__","duration conversion overflow shouldn't participate in overload resolution","Bristol","|Complete|"
+"`2122 <https://wg21.link/lwg2122>`__","merge() stability for lists versus forward lists","Bristol","|Complete|"
+"`2128 <https://wg21.link/lwg2128>`__","Absence of global functions cbegin/cend","Bristol","|Complete|"
+"`2145 <https://wg21.link/lwg2145>`__","error_category default constructor","Bristol","|Complete|"
+"`2147 <https://wg21.link/lwg2147>`__","Unclear hint type in Allocator's allocate function","Bristol","|Complete|"
+"`2148 <https://wg21.link/lwg2148>`__","Hashing enums should be supported directly by std::hash","Bristol","|Complete|"
+"`2149 <https://wg21.link/lwg2149>`__","Concerns about 20.8/5","Bristol","|Complete|"
+"`2162 <https://wg21.link/lwg2162>`__","allocator_traits::max_size missing noexcept","Bristol","|Complete|"
+"`2163 <https://wg21.link/lwg2163>`__","nth_element requires inconsistent post-conditions","Bristol","|Complete|"
+"`2169 <https://wg21.link/lwg2169>`__","Missing reset() requirements in unique_ptr specialization","Bristol","|Complete|"
+"`2172 <https://wg21.link/lwg2172>`__","Does ``atomic_compare_exchange_*``\  accept v == nullptr arguments?","Bristol","|Complete|"
+"`2080 <https://wg21.link/lwg2080>`__","Specify when once_flag becomes invalid","Bristol","|Complete|"
+"`2098 <https://wg21.link/lwg2098>`__","promise throws clauses","Bristol","|Complete|"
+"`2109 <https://wg21.link/lwg2109>`__","Incorrect requirements for hash specializations","Bristol","|Complete|"
+"`2130 <https://wg21.link/lwg2130>`__","missing ordering constraints for fences","Bristol","|Complete|"
+"`2138 <https://wg21.link/lwg2138>`__","atomic_flag::clear ordering constraints","Bristol","|Complete|"
+"`2140 <https://wg21.link/lwg2140>`__","notify_all_at_thread_exit synchronization","Bristol","|Complete|"
+"`2144 <https://wg21.link/lwg2144>`__","Missing noexcept specification in type_index","Bristol","|Complete|"
+"`2174 <https://wg21.link/lwg2174>`__","wstring_convert::converted() should be noexcept","Bristol","|Complete|"
+"`2175 <https://wg21.link/lwg2175>`__","string_convert and wbuffer_convert validity","Bristol","|Complete|"
+"`2176 <https://wg21.link/lwg2176>`__","Special members for wstring_convert and wbuffer_convert","Bristol","|Complete|"
+"`2177 <https://wg21.link/lwg2177>`__","Requirements on Copy/MoveInsertable","Bristol","|Complete|"
+"`2185 <https://wg21.link/lwg2185>`__","Missing throws clause for future/shared_future::wait_for/wait_until","Bristol","|Complete|"
+"`2187 <https://wg21.link/lwg2187>`__","vector<bool> is missing emplace and emplace_back member functions","Bristol","|Complete|"
+"`2190 <https://wg21.link/lwg2190>`__","ordering of condition variable operations, reflects Posix discussion","Bristol","|Complete|"
+"`2196 <https://wg21.link/lwg2196>`__","Specification of ``is_*[copy/move]_[constructible/assignable]``\  unclear for non-referencable types","Bristol","|Complete|"
+"`2197 <https://wg21.link/lwg2197>`__","Specification of ``is_[un]signed``\  unclear for non-arithmetic types","Bristol","|Complete|"
+"`2200 <https://wg21.link/lwg2200>`__","Data race avoidance for all containers, not only for sequences","Bristol","|Complete|"
+"`2203 <https://wg21.link/lwg2203>`__","scoped_allocator_adaptor uses wrong argument types for piecewise construction","Bristol","|Complete|"
+"`2207 <https://wg21.link/lwg2207>`__","basic_string::at should not have a Requires clause","Bristol","|Complete|"
+"`2209 <https://wg21.link/lwg2209>`__","assign() overspecified for sequence containers","Bristol","|Complete|"
+"`2210 <https://wg21.link/lwg2210>`__","Missing allocator-extended constructor for allocator-aware containers","Bristol","|Complete|"
+"`2211 <https://wg21.link/lwg2211>`__","Replace ambiguous use of ""Allocator"" in container requirements","Bristol","|Complete|"
+"`2222 <https://wg21.link/lwg2222>`__","Inconsistency in description of forward_list::splice_after single-element overload","Bristol","|Complete|"
+"`2225 <https://wg21.link/lwg2225>`__","Unrealistic header inclusion checks required","Bristol","|Complete|"
+"`2229 <https://wg21.link/lwg2229>`__","Standard code conversion facets underspecified","Bristol","|Complete|"
+"`2231 <https://wg21.link/lwg2231>`__","DR 704 removes complexity guarantee for clear()","Bristol","|Complete|"
+"`2235 <https://wg21.link/lwg2235>`__","Undefined behavior without proper requirements on basic_string constructors","Bristol","|Complete|"
+"","","",""
+"`2141 <https://wg21.link/lwg2141>`__","common_type trait produces reference types","Chicago","|Complete|"
+"`2246 <https://wg21.link/lwg2246>`__","unique_ptr assignment effects w.r.t. deleter","Chicago","|Complete|"
+"`2247 <https://wg21.link/lwg2247>`__","Type traits and std::nullptr_t","Chicago","|Complete|"
+"`2085 <https://wg21.link/lwg2085>`__","Wrong description of effect 1 of basic_istream::ignore","Chicago","|Complete|"
+"`2087 <https://wg21.link/lwg2087>`__","iostream_category() and noexcept","Chicago","|Complete|"
+"`2143 <https://wg21.link/lwg2143>`__","ios_base::xalloc should be thread-safe","Chicago","|Complete|"
+"`2150 <https://wg21.link/lwg2150>`__","Unclear specification of find_end","Chicago","|Complete|"
+"`2180 <https://wg21.link/lwg2180>`__","Exceptions from std::seed_seq operations","Chicago","|Complete|"
+"`2194 <https://wg21.link/lwg2194>`__","Impossible container requirements for adaptor types","Chicago","|Complete|"
+"`2013 <https://wg21.link/lwg2013>`__","Do library implementers have the freedom to add constexpr?","Chicago","|Complete|"
+"`2018 <https://wg21.link/lwg2018>`__","regex_traits::isctype Returns clause is wrong","Chicago","|Complete|"
+"`2078 <https://wg21.link/lwg2078>`__","Throw specification of async() incomplete","Chicago","|Complete|"
+"`2097 <https://wg21.link/lwg2097>`__","packaged_task constructors should be constrained","Chicago","|Complete|"
+"`2100 <https://wg21.link/lwg2100>`__","Timed waiting functions cannot timeout if launch::async policy used","Chicago","|Complete|"
+"`2120 <https://wg21.link/lwg2120>`__","What should async do if neither 'async' nor 'deferred' is set in policy?","Chicago","|Complete|"
+"`2159 <https://wg21.link/lwg2159>`__","atomic_flag initialization","Chicago","|Complete|"
+"`2275 <https://wg21.link/lwg2275>`__","Why is forward_as_tuple not constexpr?","Chicago","|Complete|"
+"`2284 <https://wg21.link/lwg2284>`__","Inconsistency in allocator_traits::max_size","Chicago","|Complete|"
+"`2298 <https://wg21.link/lwg2298>`__","``is_nothrow_constructible``\  is always false because of create<>","Chicago","|Complete|"
+"`2300 <https://wg21.link/lwg2300>`__","Redundant sections for map and multimap members should be removed","Chicago","|Complete|"
+"NB comment: GB9","Remove gets from C++14","Chicago","|Complete|"
+"","","",""
+"`2135 <https://wg21.link/lwg2135>`__","Unclear requirement for exceptions thrown in condition_variable::wait()","Issaquah","|Complete|"
+"`2291 <https://wg21.link/lwg2291>`__","std::hash is vulnerable to collision DoS attack","Issaquah","|Complete|"
+"`2142 <https://wg21.link/lwg2142>`__","packaged_task::operator() synchronization too broad?","Issaquah","|Complete|"
+"`2240 <https://wg21.link/lwg2240>`__","Probable misuse of term ""function scope"" in [thread.condition]","Issaquah","|Complete|"
+"`2252 <https://wg21.link/lwg2252>`__","Strong guarantee on vector::push_back() still broken with C++11?","Issaquah","|Complete|"
+"`2257 <https://wg21.link/lwg2257>`__","Simplify container requirements with the new algorithms","Issaquah","|Complete|"
+"`2268 <https://wg21.link/lwg2268>`__","Setting a default argument in the declaration of a member function assign of std::basic_string","Issaquah","|Complete|"
+"`2271 <https://wg21.link/lwg2271>`__","regex_traits::lookup_classname specification unclear","Issaquah","|Complete|"
+"`2272 <https://wg21.link/lwg2272>`__","quoted should use char_traits::eq for character comparison","Issaquah","|Complete|"
+"`2278 <https://wg21.link/lwg2278>`__","User-defined literals for Standard Library types","Issaquah","|Complete|"
+"`2280 <https://wg21.link/lwg2280>`__","begin / end for arrays should be constexpr and noexcept","Issaquah","|Complete|"
+"`2285 <https://wg21.link/lwg2285>`__","make_reverse_iterator","Issaquah","|Complete|"
+"`2299 <https://wg21.link/lwg2299>`__","Effects of inaccessible ``key_compare::is_transparent``\  type are not clear","Issaquah","|Complete|"
+"`1450 <https://wg21.link/lwg1450>`__","Contradiction in regex_constants","Issaquah","|Complete|"
+"`2003 <https://wg21.link/lwg2003>`__","String exception inconsistency in erase.","Issaquah","|Complete|"
+"`2112 <https://wg21.link/lwg2112>`__","User-defined classes that cannot be derived from","Issaquah","|Complete|"
+"`2132 <https://wg21.link/lwg2132>`__","std::function ambiguity","Issaquah","|Complete|"
+"`2182 <https://wg21.link/lwg2182>`__","``Container::[const_]reference`` types are misleadingly specified","Issaquah","|Complete|"
+"`2188 <https://wg21.link/lwg2188>`__","Reverse iterator does not fully support targets that overload operator&","Issaquah","|Complete|"
+"`2193 <https://wg21.link/lwg2193>`__","Default constructors for standard library containers are explicit","Issaquah","|Complete|"
+"`2205 <https://wg21.link/lwg2205>`__","Problematic postconditions of regex_match and regex_search","Issaquah","|Complete|"
+"`2213 <https://wg21.link/lwg2213>`__","Return value of std::regex_replace","Issaquah","|Complete|"
+"`2258 <https://wg21.link/lwg2258>`__","a.erase(q1, q2) unable to directly return q2","Issaquah","|Complete|"
+"`2263 <https://wg21.link/lwg2263>`__","Comparing iterators and allocator pointers with different const-character","Issaquah","|Complete|"
+"`2293 <https://wg21.link/lwg2293>`__","Wrong facet used by num_put::do_put","Issaquah","|Complete|"
+"`2301 <https://wg21.link/lwg2301>`__","Why is std::tie not constexpr?","Issaquah","|Complete|"
+"`2304 <https://wg21.link/lwg2304>`__","Complexity of count in unordered associative containers","Issaquah","|Complete|"
+"`2306 <https://wg21.link/lwg2306>`__","match_results::reference should be value_type&, not const value_type&","Issaquah","|Complete|"
+"`2308 <https://wg21.link/lwg2308>`__","Clarify container destructor requirements w.r.t. std::array","Issaquah","|Complete|"
+"`2313 <https://wg21.link/lwg2313>`__","tuple_size should always derive from integral_constant<size_t, N>","Issaquah","|Complete|"
+"`2314 <https://wg21.link/lwg2314>`__","apply() should return decltype(auto) and use decay_t before tuple_size","Issaquah","|Complete|"
+"`2315 <https://wg21.link/lwg2315>`__","weak_ptr should be movable","Issaquah","|Complete|"
+"`2316 <https://wg21.link/lwg2316>`__","weak_ptr::lock() should be atomic","Issaquah","|Complete|"
+"`2317 <https://wg21.link/lwg2317>`__","The type property queries should be UnaryTypeTraits returning size_t","Issaquah","|Complete|"
+"`2320 <https://wg21.link/lwg2320>`__","select_on_container_copy_construction() takes allocators, not containers","Issaquah","|Complete|"
+"`2322 <https://wg21.link/lwg2322>`__","Associative(initializer_list, stuff) constructors are underspecified","Issaquah","|Complete|"
+"`2323 <https://wg21.link/lwg2323>`__","vector::resize(n, t)'s specification should be simplified","Issaquah","|Complete|"
+"`2324 <https://wg21.link/lwg2324>`__","Insert iterator constructors should use addressof()","Issaquah","|Complete|"
+"`2329 <https://wg21.link/lwg2329>`__","regex_match()/regex_search() with match_results should forbid temporary strings","Issaquah","|Complete|"
+"`2330 <https://wg21.link/lwg2330>`__","regex(""meow"", regex::icase) is technically forbidden but should be permitted","Issaquah","|Complete|"
+"`2332 <https://wg21.link/lwg2332>`__","regex_iterator/regex_token_iterator should forbid temporary regexes","Issaquah","|Complete|"
+"`2339 <https://wg21.link/lwg2339>`__","Wording issue in nth_element","Issaquah","|Complete|"
+"`2341 <https://wg21.link/lwg2341>`__","Inconsistency between basic_ostream::seekp(pos) and basic_ostream::seekp(off, dir)","Issaquah","|Complete|"
+"`2344 <https://wg21.link/lwg2344>`__","quoted()'s interaction with padding is unclear","Issaquah","|Complete|"
+"`2346 <https://wg21.link/lwg2346>`__","integral_constant's member functions should be marked noexcept","Issaquah","|Complete|"
+"`2350 <https://wg21.link/lwg2350>`__","min, max, and minmax should be constexpr","Issaquah","|Complete|"
+"`2356 <https://wg21.link/lwg2356>`__","Stability of erasure in unordered associative containers","Issaquah","|Complete|"
+"`2357 <https://wg21.link/lwg2357>`__","Remaining ""Assignable"" requirement","Issaquah","|Complete|"
+"`2359 <https://wg21.link/lwg2359>`__","How does regex_constants::nosubs affect basic_regex::mark_count()?","Issaquah","|Complete|"
+"`2360 <https://wg21.link/lwg2360>`__","``reverse_iterator::operator*()``\  is unimplementable","Issaquah","|Complete|"
+"`2104 <https://wg21.link/lwg2104>`__","unique_lock move-assignment should not be noexcept","Issaquah","|Complete|"
+"`2186 <https://wg21.link/lwg2186>`__","Incomplete action on async/launch::deferred","Issaquah","|Complete|"
+"`2075 <https://wg21.link/lwg2075>`__","Progress guarantees, lock-free property, and scheduling assumptions","Issaquah","|Complete|"
+"`2288 <https://wg21.link/lwg2288>`__","Inconsistent requirements for shared mutexes","Issaquah","|Complete|"
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx14Papers.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx14Papers.csv
new file mode 100644
index 0000000..0e5ba7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx14Papers.csv
@@ -0,0 +1,32 @@
+"Paper #","Group","Paper Name","Meeting","Status","First released version"
+"`3346 <https://wg21.link/n3346>`__","LWG","Terminology for Container Element Requirements - Rev 1","Kona","|Complete|","3.4"
+"","","","","",""
+"`3421 <https://wg21.link/n3421>`__","LWG","Making Operator Functors greater<>","Portland","|Complete|","3.4"
+"`3462 <https://wg21.link/n3462>`__","LWG","std::result_of and SFINAE","Portland","|Complete|","3.4"
+"`3469 <https://wg21.link/n3469>`__","LWG","Constexpr Library Additions: chrono, v3","Portland","|Complete|","3.4"
+"`3470 <https://wg21.link/n3470>`__","LWG","Constexpr Library Additions: containers, v2","Portland","|Complete|","3.4"
+"`3471 <https://wg21.link/n3471>`__","LWG","Constexpr Library Additions: utilities, v3","Portland","|Complete|","3.4"
+"`3302 <https://wg21.link/n3302>`__","LWG","Constexpr Library Additions: complex, v2","Portland","|Complete|","3.4"
+"","","","","",""
+"`3545 <https://wg21.link/n3545>`__","LWG","An Incremental Improvement to integral_constant","Bristol","|Complete|","3.4"
+"`3644 <https://wg21.link/n3644>`__","LWG","Null Forward Iterators","Bristol","|Complete|","3.4"
+"`3668 <https://wg21.link/n3668>`__","LWG","std::exchange()","Bristol","|Complete|","3.4"
+"`3658 <https://wg21.link/n3658>`__","LWG","Compile-time integer sequences","Bristol","|Complete|","3.4"
+"`3670 <https://wg21.link/n3670>`__","LWG","Addressing Tuples by Type","Bristol","|Complete|","3.4"
+"`3671 <https://wg21.link/n3671>`__","LWG","Making non-modifying sequence operations more robust","Bristol","|Complete|","3.4"
+"`3656 <https://wg21.link/n3656>`__","LWG","make_unique","Bristol","|Complete|","3.4"
+"`3654 <https://wg21.link/n3654>`__","LWG","Quoted Strings","Bristol","|Complete|","3.4"
+"`3642 <https://wg21.link/n3642>`__","LWG","User-defined Literals","Bristol","|Complete|","3.4"
+"`3655 <https://wg21.link/n3655>`__","LWG","TransformationTraits Redux (excluding part 4)","Bristol","|Complete|","3.4"
+"`3657 <https://wg21.link/n3657>`__","LWG","Adding heterogeneous comparison lookup to associative containers","Bristol","|Complete|","3.4"
+"`3672 <https://wg21.link/n3672>`__","LWG","A proposal to add a utility class to represent optional objects","Bristol","*Removed from Draft Standard*","n/a"
+"`3669 <https://wg21.link/n3669>`__","LWG","Fixing constexpr member functions without const","Bristol","|Complete|","3.4"
+"`3662 <https://wg21.link/n3662>`__","LWG","C++ Dynamic Arrays (dynarray)","Bristol","*Removed from Draft Standard*","n/a"
+"`3659 <https://wg21.link/n3659>`__","SG1","Shared Locking in C++","Bristol","|Complete|","3.4"
+"","","","","",""
+"`3779 <https://wg21.link/n3779>`__","LWG","User-defined Literals for std::complex","Chicago","|Complete|","3.4"
+"`3789 <https://wg21.link/n3789>`__","LWG","Constexpr Library Additions: functional","Chicago","|Complete|","3.4"
+"","","","","",""
+"`3924 <https://wg21.link/n3924>`__","LWG","Discouraging rand() in C++14","Issaquah","|Complete|","3.5"
+"`3887 <https://wg21.link/n3887>`__","LWG","Consistent Metafunction Aliases","Issaquah","|Complete|","3.5"
+"`3891 <https://wg21.link/n3891>`__","SG1","A proposal to rename shared_mutex to shared_timed_mutex","Issaquah","|Complete|","3.5"
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx17.rst b/app/src/main/cpp/libcxx/docs/Status/Cxx17.rst
new file mode 100644
index 0000000..96c010c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx17.rst
@@ -0,0 +1,55 @@
+.. _cxx17-status:
+
+================================
+libc++ C++17 Status
+================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+================================
+
+In November 2014, the C++ standard committee created a draft for the next version of the C++ standard, initially known as "C++1z".
+In February 2017, the C++ standard committee approved this draft, and sent it to ISO for approval as C++17.
+
+This page shows the status of libc++; the status of clang's support of the language features is `here <https://clang.llvm.org/cxx_status.html#cxx17>`__.
+
+.. attention:: Features in unreleased drafts of the standard are subject to change.
+
+The groups that have contributed papers:
+
+-  CWG - Core Language Working group
+-  LWG - Library working group
+-  SG1 - Study group #1 (Concurrency working group)
+
+.. note:: "Nothing to do" means that no library changes were needed to implement this change.
+
+.. _paper-status-cxx17:
+
+Paper Status
+====================================
+
+.. csv-table::
+   :file: Cxx17Papers.csv
+   :header-rows: 1
+   :widths: auto
+
+.. note::
+
+   .. [#note-P0067] P0067: ``std::(to|from)_chars`` for integrals has been available since version 7.0. ``std::to_chars`` for ``float`` and ``double`` since version 14.0 ``std::to_chars`` for ``long double`` uses the implementation for ``double``.
+   .. [#note-P0607] P0607: The parts of P0607 that are not done are the ``<regex>`` bits.
+   .. [#note-P0154] P0154: This is currently not implemented for clang because clang does not implement the required macros.
+
+.. _issues-status-cxx17:
+
+Library Working Group Issues Status
+====================================
+
+.. csv-table::
+   :file: Cxx17Issues.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx17Issues.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx17Issues.csv
new file mode 100644
index 0000000..8bcdbd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx17Issues.csv
@@ -0,0 +1,318 @@
+"Issue #","Issue Name","Meeting","Status","First released version"
+"`2016 <https://wg21.link/LWG2016>`__","Allocators must be no-throw swappable","Urbana","|Complete|",""
+"`2118 <https://wg21.link/LWG2376>`__","``unique_ptr``\  for array does not support cv qualification conversion of actual argument","Urbana","|Complete|",""
+"`2170 <https://wg21.link/LWG2170>`__","Aggregates cannot be ``DefaultConstructible``\ ","Urbana","|Complete|",""
+"`2308 <https://wg21.link/LWG2308>`__","Clarify container destructor requirements w.r.t. ``std::array``\ ","Urbana","|Complete|",""
+"`2340 <https://wg21.link/LWG2340>`__","Replacement allocation functions declared as inline","Urbana","|Complete|",""
+"`2354 <https://wg21.link/LWG2354>`__","Unnecessary copying when inserting into maps with braced-init syntax","Urbana","|Complete|",""
+"`2377 <https://wg21.link/LWG2377>`__","``std::align``\  requirements overly strict","Urbana","|Complete|",""
+"`2396 <https://wg21.link/LWG2396>`__","``underlying_type``\  doesn't say what to do for an incomplete enumeration type","Urbana","|Complete|",""
+"`2399 <https://wg21.link/LWG2399>`__","``shared_ptr``\ 's constructor from ``unique_ptr``\  should be constrained","Urbana","|Complete|",""
+"`2400 <https://wg21.link/LWG2400>`__","``shared_ptr``\ 's ``get_deleter()``\  should use ``addressof()``\ ","Urbana","|Complete|",""
+"`2401 <https://wg21.link/LWG2401>`__","``std::function``\  needs more noexcept","Urbana","|Complete|",""
+"`2404 <https://wg21.link/LWG2404>`__","``mismatch()``\ 's complexity needs to be updated","Urbana","|Complete|",""
+"`2408 <https://wg21.link/LWG2408>`__","SFINAE-friendly ``common_type``\  / ``iterator_traits``\  is missing in C++14","Urbana","|Complete|",""
+"","","","",""
+"`2106 <https://wg21.link/LWG2106>`__","``move_iterator``\  wrapping iterators returning prvalues","Urbana","|Complete|",""
+"`2129 <https://wg21.link/LWG2129>`__","User specializations of ``std::initializer_list``\ ","Urbana","|Complete|",""
+"`2212 <https://wg21.link/LWG2212>`__","``tuple_size``\  for ``const pair``\  request <tuple> header","Urbana","|Complete|",""
+"`2217 <https://wg21.link/LWG2217>`__","``operator==(sub_match, string)``\  slices on embedded '\0's","Urbana","|Complete|",""
+"`2230 <https://wg21.link/LWG2230>`__","""see below"" for ``initializer_list``\  constructors of unordered containers","Urbana","|Complete|",""
+"`2233 <https://wg21.link/LWG2233>`__","``bad_function_call::what()``\  unhelpful","Urbana","|Complete|",""
+"`2266 <https://wg21.link/LWG2266>`__","``vector``\  and ``deque``\  have incorrect insert requirements","Urbana","|Complete|",""
+"`2325 <https://wg21.link/LWG2325>`__","``minmax_element()``\ 's behavior differing from ``max_element()``\ 's should be noted","Urbana","|Complete|",""
+"`2361 <https://wg21.link/LWG2361>`__","Apply 2299 resolution throughout library","Urbana","|Complete|",""
+"`2365 <https://wg21.link/LWG2365>`__","Missing noexcept in ``shared_ptr::shared_ptr(nullptr_t)``\ ","Urbana","|Complete|",""
+"`2376 <https://wg21.link/LWG2376>`__","``bad_weak_ptr::what()``\  overspecified","Urbana","|Complete|",""
+"`2387 <https://wg21.link/LWG2387>`__","More nested types that must be accessible and unambiguous","Urbana","|Complete|",""
+"","","","",""
+"`2059 <https://wg21.link/LWG2059>`__","C++0x ambiguity problem with map::erase","Lenexa","|Complete|",""
+"`2063 <https://wg21.link/LWG2063>`__","Contradictory requirements for string move assignment","Lenexa","|Complete|",""
+"`2076 <https://wg21.link/LWG2076>`__","Bad CopyConstructible requirement in set constructors","Lenexa","|Complete|",""
+"`2160 <https://wg21.link/LWG2160>`__","Unintended destruction ordering-specification of resize","Lenexa","|Complete|",""
+"`2168 <https://wg21.link/LWG2168>`__","Inconsistent specification of uniform_real_distribution constructor","Lenexa","|Complete|",""
+"`2239 <https://wg21.link/LWG2239>`__","min/max/minmax requirements","Lenexa","|Complete|",""
+"`2364 <https://wg21.link/LWG2364>`__","deque and vector pop_back don't specify iterator invalidation requirements","Lenexa","|Complete|",""
+"`2369 <https://wg21.link/LWG2369>`__","constexpr max(initializer_list) vs max_element","Lenexa","|Complete|",""
+"`2378 <https://wg21.link/LWG2378>`__","Behaviour of standard exception types","Lenexa","|Complete|",""
+"`2403 <https://wg21.link/LWG2403>`__","stof() should call strtof() and wcstof()","Lenexa","|Complete|",""
+"`2406 <https://wg21.link/LWG2406>`__","negative_binomial_distribution should reject p == 1","Lenexa","|Complete|",""
+"`2407 <https://wg21.link/LWG2407>`__","packaged_task(allocator_arg_t, const Allocator&, F&&) should neither be constrained nor explicit","Lenexa","|Complete|",""
+"`2411 <https://wg21.link/LWG2411>`__","shared_ptr is only contextually convertible to bool","Lenexa","|Complete|",""
+"`2415 <https://wg21.link/LWG2415>`__","Inconsistency between unique_ptr and shared_ptr","Lenexa","|Complete|",""
+"`2420 <https://wg21.link/LWG2420>`__","function<void(ArgTypes...)> does not discard the return value of the target object","Lenexa","|Complete|",""
+"`2425 <https://wg21.link/LWG2425>`__","``operator delete(void*, size_t)``\  doesn't invalidate pointers sufficiently","Lenexa","|Complete|",""
+"`2427 <https://wg21.link/LWG2427>`__","Container adaptors as sequence containers, redux","Lenexa","|Complete|",""
+"`2428 <https://wg21.link/LWG2428>`__","""External declaration"" used without being defined","Lenexa","|Complete|",""
+"`2433 <https://wg21.link/LWG2433>`__","``uninitialized_copy()``\ /etc. should tolerate overloaded operator&","Lenexa","|Complete|",""
+"`2434 <https://wg21.link/LWG2434>`__","``shared_ptr::use_count()``\  is efficient","Lenexa","|Complete|",""
+"`2437 <https://wg21.link/LWG2437>`__","``iterator_traits::reference``\  can and can't be void","Lenexa","|Complete|",""
+"`2438 <https://wg21.link/LWG2438>`__","``std::iterator``\  inheritance shouldn't be mandated","Lenexa","|Complete|",""
+"`2439 <https://wg21.link/LWG2439>`__","``unique_copy()``\  sometimes can't fall back to reading its output","Lenexa","|Complete|",""
+"`2440 <https://wg21.link/LWG2440>`__","``seed_seq::size()``\  should be noexcept","Lenexa","|Complete|",""
+"`2442 <https://wg21.link/LWG2442>`__","``call_once()``\  shouldn't DECAY_COPY()","Lenexa","|Complete|",""
+"`2448 <https://wg21.link/LWG2448>`__","Non-normative Container destructor specification","Lenexa","|Complete|",""
+"`2454 <https://wg21.link/LWG2454>`__","Add ``raw_storage_iterator::base()``\  member","Lenexa","|Complete|",""
+"`2455 <https://wg21.link/LWG2455>`__","Allocator default construction should be allowed to throw","Lenexa","|Complete|",""
+"`2458 <https://wg21.link/LWG2458>`__","N3778 and new library deallocation signatures","Lenexa","|Complete|",""
+"`2459 <https://wg21.link/LWG2459>`__","``std::polar``\  should require a non-negative rho","Lenexa","|Complete|",""
+"`2464 <https://wg21.link/LWG2464>`__","``try_emplace``\  and ``insert_or_assign``\  misspecified","Lenexa","|Complete|",""
+"`2467 <https://wg21.link/LWG2467>`__","``is_always_equal``\  has slightly inconsistent default","Lenexa","|Complete|",""
+"`2470 <https://wg21.link/LWG2470>`__","Allocator's destroy function should be allowed to fail to instantiate","Lenexa","|Complete|",""
+"`2482 <https://wg21.link/LWG2482>`__","[c.strings] Table 73 mentions nonexistent functions","Lenexa","|Complete|",""
+"`2488 <https://wg21.link/LWG2488>`__","Placeholders should be allowed and encouraged to be constexpr","Lenexa","|Complete|",""
+"","","","",""
+"`1169 <https://wg21.link/LWG1169>`__","``num_get``\  not fully compatible with ``strto*``\ ","Kona","|Complete|",""
+"`2072 <https://wg21.link/LWG2072>`__","Unclear wording about capacity of temporary buffers","Kona","|Complete|",""
+"`2101 <https://wg21.link/LWG2101>`__","Some transformation types can produce impossible types","Kona","|Complete|",""
+"`2111 <https://wg21.link/LWG2111>`__","Which ``unexpected``\ &#47;``terminate``\  handler is called from the exception handling runtime?","Kona","|Complete|",""
+"`2119 <https://wg21.link/LWG2119>`__","Missing ``hash``\  specializations for extended integer types","Kona","|Complete|",""
+"`2127 <https://wg21.link/LWG2127>`__","Move-construction with ``raw_storage_iterator``\ ","Kona","|Complete|",""
+"`2133 <https://wg21.link/LWG2133>`__","Attitude to overloaded comma for iterators","Kona","|Complete|",""
+"`2156 <https://wg21.link/LWG2156>`__","Unordered containers' ``reserve(n)``\  reserves for ``n-1``\  elements","Kona","|Complete|",""
+"`2218 <https://wg21.link/LWG2218>`__","Unclear how containers use ``allocator_traits::construct()``\ ","Kona","|Complete|",""
+"`2219 <https://wg21.link/LWG2219>`__","``*INVOKE*``\ -ing a pointer to member with a ``reference_wrapper``\  as the object expression","Kona","|Complete|",""
+"`2224 <https://wg21.link/LWG2224>`__","Ambiguous status of access to non-live objects","Kona","|Complete|",""
+"`2234 <https://wg21.link/LWG2234>`__","``assert()``\  should allow usage in constant expressions","Kona","|Complete|",""
+"`2244 <https://wg21.link/LWG2244>`__","Issue on ``basic_istream::seekg``\ ","Kona","|Complete|",""
+"`2250 <https://wg21.link/LWG2250>`__","Follow-up On Library Issue 2207","Kona","|Complete|",""
+"`2259 <https://wg21.link/LWG2259>`__","Issues in 17.6.5.5 rules for member functions","Kona","|Complete|",""
+"`2273 <https://wg21.link/LWG2273>`__","``regex_match``\  ambiguity","Kona","|Complete|",""
+"`2336 <https://wg21.link/LWG2336>`__","``is_trivially_constructible``\ /``is_trivially_assignable``\  traits are always false","Kona","|Complete|",""
+"`2353 <https://wg21.link/LWG2353>`__","``std::next``\  is over-constrained","Kona","|Complete|",""
+"`2367 <https://wg21.link/LWG2367>`__","``pair``\  and ``tuple``\  are not correctly implemented for ``is_constructible``\  with no args","Kona","|Complete|",""
+"`2380 <https://wg21.link/LWG2380>`__","May ``<cstdlib>``\  provide ``long ::abs(long)``\  and ``long long ::abs(long long)``\ ?","Kona","|Complete|",""
+"`2384 <https://wg21.link/LWG2384>`__","Allocator's ``deallocate``\  function needs better specification","Kona","|Complete|",""
+"`2385 <https://wg21.link/LWG2385>`__","``function::assign``\  allocator argument doesn't make sense","Kona","|Complete|",""
+"`2435 <https://wg21.link/LWG2435>`__","``reference_wrapper::operator()``\ 's Remark should be deleted","Kona","|Complete|",""
+"`2447 <https://wg21.link/LWG2447>`__","Allocators and ``volatile``\ -qualified value types","Kona","|Complete|",""
+"`2462 <https://wg21.link/LWG2462>`__","``std::ios_base::failure``\  is overspecified","Kona","|Complete|",""
+"`2466 <https://wg21.link/LWG2466>`__","``allocator_traits::max_size()``\  default behavior is incorrect","Kona","|Complete|",""
+"`2469 <https://wg21.link/LWG2469>`__","Wrong specification of Requires clause of ``operator[]``\  for ``map``\  and ``unordered_map``\ ","Kona","|Complete|",""
+"`2473 <https://wg21.link/LWG2473>`__","``basic_filebuf``\ 's relation to C ``FILE``\  semantics","Kona","|Complete|",""
+"`2476 <https://wg21.link/LWG2476>`__","``scoped_allocator_adaptor``\  is not assignable","Kona","|Complete|",""
+"`2477 <https://wg21.link/LWG2477>`__","Inconsistency of wordings in ``std::vector::erase()``\  and ``std::deque::erase()``\ ","Kona","|Complete|",""
+"`2483 <https://wg21.link/LWG2483>`__","``throw_with_nested()``\  should use ``is_final``\ ","Kona","|Complete|",""
+"`2484 <https://wg21.link/LWG2484>`__","``rethrow_if_nested()``\  is doubly unimplementable","Kona","|Complete|",""
+"`2485 <https://wg21.link/LWG2485>`__","``get()``\  should be overloaded for ``const tuple&&``\ ","Kona","|Complete|",""
+"`2486 <https://wg21.link/LWG2486>`__","``mem_fn()``\  should be required to use perfect forwarding","Kona","|Complete|",""
+"`2487 <https://wg21.link/LWG2487>`__","``bind()``\  should be ``const``\ -overloaded, not *cv*-overloaded","Kona","|Complete|",""
+"`2489 <https://wg21.link/LWG2489>`__","``mem_fn()``\  should be ``noexcept``\ ","Kona","|Complete|",""
+"`2492 <https://wg21.link/LWG2492>`__","Clarify requirements for ``comp``\ ","Kona","|Complete|",""
+"`2495 <https://wg21.link/LWG2495>`__","There is no such thing as an Exception Safety element","Kona","|Complete|",""
+"","","","",""
+"`2192 <https://wg21.link/LWG2192>`__","Validity and return type of ``std::abs(0u)``\  is unclear","Jacksonville","|Complete|",""
+"`2276 <https://wg21.link/LWG2276>`__","Missing requirement on ``std::promise::set_exception``\ ","Jacksonville","|Complete|",""
+"`2296 <https://wg21.link/LWG2296>`__","``std::addressof``\  should be ``constexpr``\ ","Jacksonville","|Complete|",""
+"`2450 <https://wg21.link/LWG2450>`__","``(greater|less|greater_equal|less_equal)<void>``\  do not yield a total order for pointers","Jacksonville","|Complete|",""
+"`2520 <https://wg21.link/LWG2520>`__","N4089 broke initializing ``unique_ptr<T[]>``\  from a ``nullptr``\ ","Jacksonville","|Complete|",""
+"`2522 <https://wg21.link/LWG2522>`__","[fund.ts.v2] Contradiction in ``set_default_resource``\  specification","Jacksonville","|Complete|",""
+"`2523 <https://wg21.link/LWG2523>`__","``std::promise``\  synopsis shows two ``set_value_at_thread_exit()``\ 's for no apparent reason","Jacksonville","|Complete|",""
+"`2537 <https://wg21.link/LWG2537>`__","Constructors for ``priority_queue``\  taking allocators should call ``make_heap``\ ","Jacksonville","|Complete|",""
+"`2539 <https://wg21.link/LWG2539>`__","[fund.ts.v2] ``invocation_trait``\  definition definition doesn't work for surrogate call functions","Jacksonville","",""
+"`2545 <https://wg21.link/LWG2545>`__","Simplify wording for ``bind``\  without explicitly specified return type","Jacksonville","|Complete|",""
+"`2557 <https://wg21.link/LWG2557>`__","Logical operator traits are broken in the zero-argument case","Jacksonville","|Complete|",""
+"`2558 <https://wg21.link/LWG2558>`__","[fund.ts.v2] Logical operator traits are broken in the zero-argument case","Jacksonville","|Complete|",""
+"`2559 <https://wg21.link/LWG2559>`__","Error in LWG 2234's resolution","Jacksonville","|Complete|",""
+"`2560 <https://wg21.link/LWG2560>`__","``is_constructible``\  underspecified when applied to a function type","Jacksonville","|Complete|",""
+"`2565 <https://wg21.link/LWG2565>`__","``std::function``\ 's move constructor should guarantee nothrow for ``reference_wrapper``\ s and function pointers","Jacksonville","|Complete|",""
+"`2566 <https://wg21.link/LWG2566>`__","Requirements on the first template parameter of container adaptors","Jacksonville","|Complete|",""
+"`2571 <https://wg21.link/LWG2571>`__","|sect|\ [map.modifiers]/2 imposes nonsensical requirement on ``insert(InputIterator, InputIterator)``\ ","Jacksonville","|Complete|",""
+"`2572 <https://wg21.link/LWG2572>`__","The remarks for ``shared_ptr::operator*``\  should apply to *cv*-qualified ``void``\  as well","Jacksonville","|Complete|",""
+"`2574 <https://wg21.link/LWG2574>`__","[fund.ts.v2] ``std::experimental::function::operator=(F&&)``\  should be constrained","Jacksonville","|Complete|",""
+"`2575 <https://wg21.link/LWG2575>`__","[fund.ts.v2] ``experimental::function::assign``\  should be removed","Jacksonville","",""
+"`2576 <https://wg21.link/LWG2576>`__","``istream_iterator``\  and ``ostream_iterator``\  should use ``std::addressof``\ ","Jacksonville","|Complete|",""
+"`2577 <https://wg21.link/LWG2577>`__","``{shared,unique}_lock``\  should use ``std::addressof``\ ","Jacksonville","|Complete|",""
+"`2579 <https://wg21.link/LWG2579>`__","Inconsistency wrt Allocators in ``basic_string``\  assignment vs. ``basic_string::assign``\ ","Jacksonville","|Complete|",""
+"`2581 <https://wg21.link/LWG2581>`__","Specialization of ``<type_traits>``\  variable templates should be prohibited","Jacksonville","|Complete|",""
+"`2582 <https://wg21.link/LWG2582>`__","|sect|\ [res.on.functions]/2's prohibition against incomplete types shouldn't apply to type traits","Jacksonville","|Complete|",""
+"`2583 <https://wg21.link/LWG2583>`__","There is no way to supply an allocator for ``basic_string(str, pos)``\ ","Jacksonville","|Complete|",""
+"`2585 <https://wg21.link/LWG2585>`__","``forward_list::resize(size_type, const value_type&)``\  effects incorrect","Jacksonville","|Complete|",""
+"`2586 <https://wg21.link/LWG2586>`__","Wrong value category used in ``scoped_allocator_adaptor::construct()``\ ","Jacksonville","|Complete|",""
+"`2590 <https://wg21.link/LWG2590>`__","Aggregate initialization for ``std::array``\ ","Jacksonville","|Complete|",""
+"","","","",""
+"`2181 <https://wg21.link/LWG2181>`__","Exceptions from seed sequence operations","Oulu","|Complete|",""
+"`2309 <https://wg21.link/LWG2309>`__","mutex::lock() should not throw device_or_resource_busy","Oulu","|Complete|",""
+"`2310 <https://wg21.link/LWG2310>`__","Public exposition only member in std::array","Oulu","|Complete|",""
+"`2312 <https://wg21.link/LWG2312>`__","tuple's constructor constraints need to be phrased more precisely","Oulu","|Complete|",""
+"`2328 <https://wg21.link/LWG2328>`__","Rvalue stream extraction should use perfect forwarding","Oulu","|Complete|",""
+"`2393 <https://wg21.link/LWG2393>`__","std::function's Callable definition is broken","Oulu","|Complete|",""
+"`2422 <https://wg21.link/LWG2422>`__","``std::numeric_limits<T>::is_modulo``\  description: ""most machines"" errata","Oulu","|Complete|",""
+"`2426 <https://wg21.link/LWG2426>`__","Issue about compare_exchange","Oulu","",""
+"`2436 <https://wg21.link/LWG2436>`__","Comparators for associative containers should always be CopyConstructible","Oulu","|Complete|",""
+"`2441 <https://wg21.link/LWG2441>`__","Exact-width atomic typedefs should be provided","Oulu","|Complete|",""
+"`2451 <https://wg21.link/LWG2451>`__","[fund.ts.v2] optional should 'forward' T's implicit conversions","Oulu","|Nothing To Do|",""
+"`2509 <https://wg21.link/LWG2509>`__","[fund.ts.v2] any_cast doesn't work with rvalue reference targets and cannot move with a value target","Oulu","|Complete|",""
+"`2516 <https://wg21.link/LWG2516>`__","[fund.ts.v2] Public ""exposition only"" members in observer_ptr","Oulu","",""
+"`2542 <https://wg21.link/LWG2542>`__","Missing const requirements for associative containers","Oulu","",""
+"`2549 <https://wg21.link/LWG2549>`__","Tuple EXPLICIT constructor templates that take tuple parameters end up taking references to temporaries and will create dangling references","Oulu","|Complete|",""
+"`2550 <https://wg21.link/LWG2550>`__","Wording of unordered container's clear() method complexity","Oulu","|Complete|",""
+"`2551 <https://wg21.link/LWG2551>`__","[fund.ts.v2] ""Exception safety"" cleanup in library fundamentals required","Oulu","|Complete|",""
+"`2555 <https://wg21.link/LWG2555>`__","[fund.ts.v2] No handling for over-aligned types in optional","Oulu","|Complete|",""
+"`2573 <https://wg21.link/LWG2573>`__","[fund.ts.v2] std::hash<std::experimental::shared_ptr> does not work for arrays","Oulu","",""
+"`2596 <https://wg21.link/LWG2596>`__","vector::data() should use addressof","Oulu","|Complete|",""
+"`2667 <https://wg21.link/LWG2667>`__","path::root_directory() description is confusing","Oulu","|Complete|",""
+"`2669 <https://wg21.link/LWG2669>`__","recursive_directory_iterator effects refers to non-existent functions","Oulu","|Complete|",""
+"`2670 <https://wg21.link/LWG2670>`__","system_complete refers to undefined variable 'base'","Oulu","|Complete|",""
+"`2671 <https://wg21.link/LWG2671>`__","Errors in Copy","Oulu","|Complete|",""
+"`2673 <https://wg21.link/LWG2673>`__","status() effects cannot be implemented as specified","Oulu","|Complete|",""
+"`2674 <https://wg21.link/LWG2674>`__","Bidirectional iterator requirement on path::iterator is very expensive","Oulu","|Complete|",""
+"`2683 <https://wg21.link/LWG2683>`__","filesystem::copy() says ""no effects""","Oulu","|Complete|",""
+"`2684 <https://wg21.link/LWG2684>`__","priority_queue lacking comparator typedef","Oulu","|Complete|",""
+"`2685 <https://wg21.link/LWG2685>`__","shared_ptr deleters must not throw on move construction","Oulu","|Complete|",""
+"`2687 <https://wg21.link/LWG2687>`__","{inclusive,exclusive}_scan misspecified","Oulu","",""
+"`2688 <https://wg21.link/LWG2688>`__","clamp misses preconditions and has extraneous condition on result","Oulu","|Complete|",""
+"`2689 <https://wg21.link/LWG2689>`__","Parallel versions of std::copy and std::move shouldn't be in order","Oulu","",""
+"`2698 <https://wg21.link/LWG2698>`__","Effect of assign() on iterators/pointers/references","Oulu","|Complete|",""
+"`2704 <https://wg21.link/LWG2704>`__","recursive_directory_iterator's members should require '``*this`` is dereferenceable'","Oulu","|Complete|",""
+"`2706 <https://wg21.link/LWG2706>`__","Error reporting for recursive_directory_iterator::pop() is under-specified","Oulu","|Complete|",""
+"`2707 <https://wg21.link/LWG2707>`__","path construction and assignment should have ""string_type&&"" overloads","Oulu","|Complete|",""
+"`2709 <https://wg21.link/LWG2709>`__","offsetof is unnecessarily imprecise","Oulu","",""
+"`2710 <https://wg21.link/LWG2710>`__","""Effects: Equivalent to ..."" doesn't count ""Synchronization:"" as determined semantics","Oulu","|Complete|",""
+"`2711 <https://wg21.link/LWG2711>`__","path is convertible from approximately everything under the sun","Oulu","|Complete|",""
+"`2716 <https://wg21.link/LWG2716>`__","Specification of shuffle and sample disallows lvalue URNGs","Oulu","|Complete|",""
+"`2718 <https://wg21.link/LWG2718>`__","Parallelism bug in [algorithms.parallel.exec] p2","Oulu","",""
+"`2719 <https://wg21.link/LWG2719>`__","permissions function should not be noexcept due to narrow contract","Oulu","|Complete|",""
+"`2720 <https://wg21.link/LWG2720>`__","permissions function incorrectly specified for symlinks","Oulu","|Complete|",""
+"`2721 <https://wg21.link/LWG2721>`__","remove_all has incorrect post conditions","Oulu","|Complete|",""
+"`2723 <https://wg21.link/LWG2723>`__","Do directory_iterator and recursive_directory_iterator become the end iterator upon error?","Oulu","|Complete|",""
+"`2724 <https://wg21.link/LWG2724>`__","The protected virtual member functions of memory_resource should be private","Oulu","|Complete|","16.0"
+"`2725 <https://wg21.link/LWG2725>`__","filesystem::exists(const path&, error_code&) error reporting","Oulu","|Complete|",""
+"`2726 <https://wg21.link/LWG2726>`__","``[recursive_]directory_iterator::increment(error_code&)`` is underspecified","Oulu","|Complete|",""
+"`2727 <https://wg21.link/LWG2727>`__","Parallel algorithms with constexpr specifier","Oulu","",""
+"`2728 <https://wg21.link/LWG2728>`__","status(p).permissions() and symlink_status(p).permissions() are not specified","Oulu","|Complete|",""
+"","","","",""
+"`2062 <https://wg21.link/LWG2062>`__","Effect contradictions w/o no-throw guarantee of std::function swaps","Issaquah","|Complete|",""
+"`2166 <https://wg21.link/LWG2166>`__","Heap property underspecified?","Issaquah","",""
+"`2221 <https://wg21.link/LWG2221>`__","No formatted output operator for nullptr","Issaquah","|Complete|",""
+"`2223 <https://wg21.link/LWG2223>`__","shrink_to_fit effect on iterator validity","Issaquah","|Complete|",""
+"`2261 <https://wg21.link/LWG2261>`__","Are containers required to use their 'pointer' type internally?","Issaquah","",""
+"`2394 <https://wg21.link/LWG2394>`__","locale::name specification unclear - what is implementation-defined?","Issaquah","|Complete|",""
+"`2460 <https://wg21.link/LWG2460>`__","LWG issue 2408 and value categories","Issaquah","|Complete|",""
+"`2468 <https://wg21.link/LWG2468>`__","Self-move-assignment of library types","Issaquah","",""
+"`2475 <https://wg21.link/LWG2475>`__","Allow overwriting of std::basic_string terminator with charT() to allow cleaner interoperation with legacy APIs","Issaquah","|Complete|",""
+"`2503 <https://wg21.link/LWG2503>`__","multiline option should be added to syntax_option_type","Issaquah","|Complete|",""
+"`2510 <https://wg21.link/LWG2510>`__","Tag types should not be DefaultConstructible","Issaquah","|Complete|",""
+"`2514 <https://wg21.link/LWG2514>`__","Type traits must not be final","Issaquah","|Complete|",""
+"`2518 <https://wg21.link/LWG2518>`__","[fund.ts.v2] Non-member swap for propagate_const should call member swap","Issaquah","|Complete|",""
+"`2519 <https://wg21.link/LWG2519>`__","Iterator operator-= has gratuitous undefined behaviour","Issaquah","|Complete|",""
+"`2521 <https://wg21.link/LWG2521>`__","[fund.ts.v2] weak_ptr's converting move constructor should be modified as well for array support","Issaquah","",""
+"`2525 <https://wg21.link/LWG2525>`__","[fund.ts.v2] get_memory_resource should be const and noexcept","Issaquah","",""
+"`2527 <https://wg21.link/LWG2527>`__","[fund.ts.v2] ALLOCATOR_OF for function::operator= has incorrect default","Issaquah","",""
+"`2531 <https://wg21.link/LWG2531>`__","future::get should explicitly state that the shared state is released","Issaquah","|Nothing To Do|",""
+"`2534 <https://wg21.link/LWG2534>`__","Constrain rvalue stream operators","Issaquah","|Complete|",""
+"`2536 <https://wg21.link/LWG2536>`__","What should <complex.h> do?","Issaquah","|Complete|",""
+"`2540 <https://wg21.link/LWG2540>`__","unordered_multimap::insert hint iterator","Issaquah","|Complete|",""
+"`2543 <https://wg21.link/LWG2543>`__","LWG 2148 (hash support for enum types) seems under-specified","Issaquah","|Complete|",""
+"`2544 <https://wg21.link/LWG2544>`__","``istreambuf_iterator(basic_streambuf<charT, traits>* s)``\  effects unclear when s is 0","Issaquah","|Complete|",""
+"`2556 <https://wg21.link/LWG2556>`__","Wide contract for future::share()","Issaquah","|Complete|",""
+"`2562 <https://wg21.link/LWG2562>`__","Consistent total ordering of pointers by comparison functors","Issaquah","",""
+"`2567 <https://wg21.link/LWG2567>`__","Specification of logical operator traits uses BaseCharacteristic, which is defined only for UnaryTypeTraits and BinaryTypeTraits","Issaquah","|Complete|",""
+"`2568 <https://wg21.link/LWG2568>`__","[fund.ts.v2] Specification of logical operator traits uses BaseCharacteristic, which is defined only for UnaryTypeTraits and BinaryTypeTraits","Issaquah","|Complete|","15.0"
+"`2569 <https://wg21.link/LWG2569>`__","conjunction and disjunction requirements are too strict","Issaquah","|Complete|","15.0"
+"`2570 <https://wg21.link/LWG2570>`__","[fund.ts.v2] conjunction and disjunction requirements are too strict","Issaquah","",""
+"`2578 <https://wg21.link/LWG2578>`__","Iterator requirements should reference iterator traits","Issaquah","|Complete|",""
+"`2584 <https://wg21.link/LWG2584>`__","<regex> ECMAScript IdentityEscape is ambiguous","Issaquah","",""
+"`2587 <https://wg21.link/LWG2587>`__","""Convertible to bool"" requirement in conjunction and disjunction","Issaquah","Resolved by 2567",""
+"`2588 <https://wg21.link/LWG2588>`__","[fund.ts.v2] ""Convertible to bool"" requirement in conjunction and disjunction","Issaquah","Resolved by 2568",""
+"`2589 <https://wg21.link/LWG2589>`__","match_results can't satisfy the requirements of a container","Issaquah","|Complete|",""
+"`2591 <https://wg21.link/LWG2591>`__","std::function's member template target() should not lead to undefined behaviour","Issaquah","|Complete|",""
+"`2598 <https://wg21.link/LWG2598>`__","addressof works on temporaries","Issaquah","|Complete|",""
+"`2664 <https://wg21.link/LWG2664>`__","operator/ (and other append) semantics not useful if argument has root","Issaquah","|Complete|",""
+"`2665 <https://wg21.link/LWG2665>`__","remove_filename() post condition is incorrect","Issaquah","|Complete|",""
+"`2672 <https://wg21.link/LWG2672>`__","Should ``is_empty``\  use error_code in its specification?","Issaquah","|Complete|",""
+"`2678 <https://wg21.link/LWG2678>`__","std::filesystem enum classes overspecified","Issaquah","|Complete|",""
+"`2679 <https://wg21.link/LWG2679>`__","Inconsistent Use of Effects and Equivalent To","Issaquah","|Complete|",""
+"`2680 <https://wg21.link/LWG2680>`__","Add ""Equivalent to"" to filesystem","Issaquah","|Complete|",""
+"`2681 <https://wg21.link/LWG2681>`__","filesystem::copy() cannot copy symlinks","Issaquah","|Complete|",""
+"`2682 <https://wg21.link/LWG2682>`__","filesystem::copy() won't create a symlink to a directory","Issaquah","|Complete|",""
+"`2686 <https://wg21.link/LWG2686>`__","Why is std::hash specialized for error_code, but not error_condition?","Issaquah","|Complete|",""
+"`2694 <https://wg21.link/LWG2694>`__","Application of LWG 436 accidentally deleted definition of ""facet""","Issaquah","|Complete|",""
+"`2696 <https://wg21.link/LWG2696>`__","Interaction between make_shared and enable_shared_from_this is underspecified","Issaquah","|Nothing To Do|",""
+"`2699 <https://wg21.link/LWG2699>`__","Missing restriction in [numeric.requirements]","Issaquah","|Complete|",""
+"`2712 <https://wg21.link/LWG2712>`__","copy_file(from, to, ...) has a number of unspecified error conditions","Issaquah","|Complete|",""
+"`2722 <https://wg21.link/LWG2722>`__","equivalent incorrectly specifies throws clause","Issaquah","|Complete|",""
+"`2729 <https://wg21.link/LWG2729>`__","Missing SFINAE on std::pair::operator=","Issaquah","|Complete|",""
+"`2732 <https://wg21.link/LWG2732>`__","Questionable specification of path::operator/= and path::append","Issaquah","|Complete|",""
+"`2733 <https://wg21.link/LWG2733>`__","[fund.ts.v2] gcd / lcm and bool","Issaquah","|Complete|",""
+"`2735 <https://wg21.link/LWG2735>`__","std::abs(short), std::abs(signed char) and others should return int instead of double in order to be compatible with C++98 and C","Issaquah","|Complete|",""
+"`2736 <https://wg21.link/LWG2736>`__","nullopt_t insufficiently constrained","Issaquah","|Complete|",""
+"`2738 <https://wg21.link/LWG2738>`__","``is_constructible``\  with void types","Issaquah","|Complete|",""
+"`2739 <https://wg21.link/LWG2739>`__","Issue with time_point non-member subtraction with an unsigned duration","Issaquah","|Complete|",""
+"`2740 <https://wg21.link/LWG2740>`__","constexpr optional<T>::operator->","Issaquah","|Complete|",""
+"`2742 <https://wg21.link/LWG2742>`__","Inconsistent string interface taking string_view","Issaquah","|Complete|",""
+"`2744 <https://wg21.link/LWG2744>`__","any's in_place constructors","Issaquah","|Complete|",""
+"`2745 <https://wg21.link/LWG2745>`__","[fund.ts.v2] Implementability of LWG 2451","Issaquah","|Complete|",""
+"`2747 <https://wg21.link/LWG2747>`__","Possibly redundant std::move in [alg.foreach]","Issaquah","|Complete|",""
+"`2748 <https://wg21.link/LWG2748>`__","swappable traits for optionals","Issaquah","|Complete|",""
+"`2749 <https://wg21.link/LWG2749>`__","swappable traits for variants","Issaquah","|Complete|",""
+"`2750 <https://wg21.link/LWG2750>`__","[fund.ts.v2] LWG 2451 conversion constructor constraint","Issaquah","|Nothing To Do|",""
+"`2752 <https://wg21.link/LWG2752>`__","""Throws:"" clauses of async and packaged_task are unimplementable","Issaquah","|Nothing To Do|",""
+"`2755 <https://wg21.link/LWG2755>`__","[string.view.io] uses non-existent basic_string_view::to_string function","Issaquah","|Complete|",""
+"`2756 <https://wg21.link/LWG2756>`__","C++ WP optional<T> should 'forward' T's implicit conversions","Issaquah","|Complete|",""
+"`2758 <https://wg21.link/LWG2758>`__","std::string{}.assign(""ABCDE"", 0, 1) is ambiguous","Issaquah","|Complete|",""
+"`2759 <https://wg21.link/LWG2759>`__","gcd / lcm and bool for the WP","Issaquah","|Complete|",""
+"`2760 <https://wg21.link/LWG2760>`__","non-const basic_string::data should not invalidate iterators","Issaquah","|Complete|",""
+"`2765 <https://wg21.link/LWG2765>`__","Did LWG 1123 go too far?","Issaquah","|Complete|",""
+"`2767 <https://wg21.link/LWG2767>`__","not_fn call_wrapper can form invalid types","Issaquah","|Complete|",""
+"`2769 <https://wg21.link/LWG2769>`__","Redundant const in the return type of any_cast(const any&)","Issaquah","|Complete|",""
+"`2771 <https://wg21.link/LWG2771>`__","Broken Effects of some basic_string::compare functions in terms of basic_string_view","Issaquah","|Complete|",""
+"`2773 <https://wg21.link/LWG2773>`__","Making std::ignore constexpr","Issaquah","|Complete|",""
+"`2777 <https://wg21.link/LWG2777>`__","basic_string_view::copy should use char_traits::copy","Issaquah","|Complete|",""
+"`2778 <https://wg21.link/LWG2778>`__","basic_string_view is missing constexpr","Issaquah","|Complete|",""
+"","","","",""
+"`2260 <https://wg21.link/LWG2260>`__","Missing requirement for Allocator::pointer","Kona","|Complete|",""
+"`2676 <https://wg21.link/LWG2676>`__","Provide filesystem::path overloads for File-based streams","Kona","|Complete|",""
+"`2768 <https://wg21.link/LWG2768>`__","any_cast and move semantics","Kona","|Complete|",""
+"`2769 <https://wg21.link/LWG2769>`__","Redundant const in the return type of any_cast(const any&)","Kona","|Complete|",""
+"`2781 <https://wg21.link/LWG2781>`__","Contradictory requirements for std::function and std::reference_wrapper","Kona","|Complete|",""
+"`2782 <https://wg21.link/LWG2782>`__","scoped_allocator_adaptor constructors must be constrained","Kona","|Complete|",""
+"`2784 <https://wg21.link/LWG2784>`__","Resolution to LWG 2484 is missing ""otherwise, no effects"" and is hard to parse","Kona","|Complete|",""
+"`2785 <https://wg21.link/LWG2785>`__","quoted should work with basic_string_view","Kona","|Complete|",""
+"`2786 <https://wg21.link/LWG2786>`__","Annex C should mention shared_ptr changes for array support","Kona","|Complete|",""
+"`2787 <https://wg21.link/LWG2787>`__","|sect|\ [file_status.cons] doesn't match class definition","Kona","|Complete|",""
+"`2788 <https://wg21.link/LWG2788>`__","basic_string range mutators unintentionally require a default constructible allocator","Kona","|Complete|",""
+"`2789 <https://wg21.link/LWG2789>`__","Equivalence of contained objects","Kona","|Complete|",""
+"`2790 <https://wg21.link/LWG2790>`__","Missing specification of istreambuf_iterator::operator->","Kona","|Complete|",""
+"`2794 <https://wg21.link/LWG2794>`__","Missing requirements for allocator pointers","Kona","|Nothing To Do|",""
+"`2795 <https://wg21.link/LWG2795>`__","|sect|\ [global.functions] provides incorrect example of ADL use","Kona","|Complete|",""
+"`2796 <https://wg21.link/LWG2796>`__","tuple should be a literal type","Kona","|Complete|",""
+"`2801 <https://wg21.link/LWG2801>`__","Default-constructibility of unique_ptr","Kona","|Complete|",""
+"`2802 <https://wg21.link/LWG2802>`__","shared_ptr constructor requirements for a deleter","Kona","|Complete|",""
+"`2804 <https://wg21.link/LWG2804>`__","Unconditional constexpr default constructor for istream_iterator","Kona","|Complete|",""
+"`2806 <https://wg21.link/LWG2806>`__","Base class of bad_optional_access","Kona","|Complete|",""
+"`2807 <https://wg21.link/LWG2807>`__","std::invoke should use ``std::is_nothrow_callable``\ ","Kona","|Complete|",""
+"`2812 <https://wg21.link/LWG2812>`__","Range access is available with <string_view>","Kona","|Complete|",""
+"`2824 <https://wg21.link/LWG2824>`__","list::sort should say that the order of elements is unspecified if an exception is thrown","Kona","|Complete|",""
+"`2826 <https://wg21.link/LWG2826>`__","string_view iterators use old wording","Kona","|Complete|",""
+"`2834 <https://wg21.link/LWG2834>`__","Resolution LWG 2223 is missing wording about end iterators","Kona","|Complete|",""
+"`2835 <https://wg21.link/LWG2835>`__","LWG 2536 seems to misspecify <tgmath.h>","Kona","|Complete|",""
+"`2837 <https://wg21.link/LWG2837>`__","gcd and lcm should support a wider range of input values","Kona","|Complete|",""
+"`2838 <https://wg21.link/LWG2838>`__","is_literal_type specification needs a little cleanup","Kona","|Complete|",""
+"`2842 <https://wg21.link/LWG2842>`__","in_place_t check for optional::optional(U&&) should decay U","Kona","|Complete|",""
+"`2850 <https://wg21.link/LWG2850>`__","std::function move constructor does unnecessary work","Kona","|Complete|",""
+"`2853 <https://wg21.link/LWG2853>`__","Possible inconsistency in specification of erase in [vector.modifiers]","Kona","|Complete|",""
+"`2855 <https://wg21.link/LWG2855>`__","std::throw_with_nested(""string_literal"")","Kona","|Complete|",""
+"`2857 <https://wg21.link/LWG2857>`__","{variant,optional,any}::emplace should return the constructed value","Kona","|Complete|",""
+"`2861 <https://wg21.link/LWG2861>`__","basic_string should require that charT match traits::char_type","Kona","|Complete|",""
+"`2866 <https://wg21.link/LWG2866>`__","Incorrect derived classes constraints","Kona","|Nothing To Do|",""
+"`2868 <https://wg21.link/LWG2868>`__","Missing specification of bad_any_cast::what()","Kona","|Complete|",""
+"`2872 <https://wg21.link/LWG2872>`__","Add definition for direct-non-list-initialization","Kona","|Complete|",""
+"`2873 <https://wg21.link/LWG2873>`__","Add noexcept to several shared_ptr related functions","Kona","|Complete|",""
+"`2874 <https://wg21.link/LWG2874>`__","Constructor ``shared_ptr::shared_ptr(Y*)``\  should be constrained","Kona","|Complete|","13.0"
+"`2875 <https://wg21.link/LWG2875>`__","shared_ptr::shared_ptr(Y\*, D, [|hellip|\ ]) constructors should be constrained","Kona","|Complete|",""
+"`2876 <https://wg21.link/LWG2876>`__","``shared_ptr::shared_ptr(const weak_ptr<Y>&)``\  constructor should be constrained","Kona","|Complete|","14.0"
+"`2878 <https://wg21.link/LWG2878>`__","Missing DefaultConstructible requirement for istream_iterator default constructor","Kona","|Complete|",""
+"`2890 <https://wg21.link/LWG2890>`__","The definition of 'object state' applies only to class types","Kona","|Complete|",""
+"`2900 <https://wg21.link/LWG2900>`__","The copy and move constructors of optional are not constexpr","Kona","|Complete|",""
+"`2903 <https://wg21.link/LWG2903>`__","The form of initialization for the emplace-constructors is not specified","Kona","|Complete|",""
+"`2904 <https://wg21.link/LWG2904>`__","Make variant move-assignment more exception safe","Kona","|Complete|",""
+"`2905 <https://wg21.link/LWG2905>`__","is_constructible_v<unique_ptr<P, D>, P, D const &> should be false when D is not copy constructible","Kona","|Complete|",""
+"`2908 <https://wg21.link/LWG2908>`__","The less-than operator for shared pointers could do more","Kona","|Complete|",""
+"`2911 <https://wg21.link/LWG2911>`__","An is_aggregate type trait is needed","Kona","|Complete|",""
+"`2921 <https://wg21.link/LWG2921>`__","packaged_task and type-erased allocators","Kona","|Complete|",""
+"`2934 <https://wg21.link/LWG2934>`__","optional<const T> doesn't compare with T","Kona","|Complete|",""
+"","","","",""
+"`2901 <https://wg21.link/LWG2901>`__","Variants cannot properly support allocators","Toronto","|Complete|",""
+"`2955 <https://wg21.link/LWG2955>`__","``to_chars / from_chars``\  depend on ``std::string``\ ","Toronto","Resolved by `P0682R1 <https://wg21.link/P0682R1>`__",""
+"`2956 <https://wg21.link/LWG2956>`__","``filesystem::canonical()``\  still defined in terms of ``absolute(p, base)``\ ","Toronto","|Complete|",""
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx17Papers.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx17Papers.csv
new file mode 100644
index 0000000..b68eb26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx17Papers.csv
@@ -0,0 +1,113 @@
+"Paper #","Group","Paper Name","Meeting","Status","First released version"
+"`N3911 <https://wg21.link/n3911>`__","LWG","TransformationTrait Alias ``void_t``\ .","Urbana","|Complete|","3.6"
+"`N4089 <https://wg21.link/n4089>`__","LWG","Safe conversions in ``unique_ptr<T[]>``\ .","Urbana","|In Progress|","3.9"
+"`N4169 <https://wg21.link/n4169>`__","LWG","A proposal to add invoke function template","Urbana","|Complete|","3.7"
+"`N4190 <https://wg21.link/n4190>`__","LWG","Removing auto_ptr, random_shuffle(), And Old <functional> Stuff.","Urbana","|Complete|","15.0"
+"`N4258 <https://wg21.link/n4258>`__","LWG","Cleaning-up noexcept in the Library.","Urbana","|In Progress|","3.7"
+"`N4259 <https://wg21.link/n4259>`__","CWG","Wording for std::uncaught_exceptions","Urbana","|Complete|","3.7"
+"`N4277 <https://wg21.link/n4277>`__","LWG","TriviallyCopyable ``reference_wrapper``\ .","Urbana","|Complete|","3.2"
+"`N4279 <https://wg21.link/n4279>`__","LWG","Improved insertion interface for unique-key maps.","Urbana","|Complete|","3.7"
+"`N4280 <https://wg21.link/n4280>`__","LWG","Non-member size() and more","Urbana","|Complete|","3.6"
+"`N4284 <https://wg21.link/n4284>`__","LWG","Contiguous Iterators.","Urbana","|Complete|","3.6"
+"`N4285 <https://wg21.link/n4285>`__","CWG","Cleanup for exception-specification and throw-expression.","Urbana","|Complete|","4.0"
+"","","","","",""
+"`N4387 <https://wg21.link/n4387>`__","LWG","improving pair and tuple","Lenexa","|Complete|","4.0"
+"`N4389 <https://wg21.link/n4389>`__","LWG","bool_constant","Lenexa","|Complete|","3.7"
+"`N4508 <https://wg21.link/n4508>`__","LWG","shared_mutex for C++17","Lenexa","|Complete|","3.7"
+"`N4366 <https://wg21.link/n4366>`__","LWG","LWG 2228 missing SFINAE rule","Lenexa","|Complete|","3.1"
+"`N4510 <https://wg21.link/n4510>`__","LWG","Minimal incomplete type support for standard containers, revision 4","Lenexa","|Complete|","3.6"
+"","","","","",""
+"`P0004R1 <https://wg21.link/p0004r1>`__","LWG","Remove Deprecated iostreams aliases.","Kona","|Complete|","3.8"
+"`P0006R0 <https://wg21.link/p0006r0>`__","LWG","Adopt Type Traits Variable Templates for C++17.","Kona","|Complete|","3.8"
+"`P0092R1 <https://wg21.link/p0092r1>`__","LWG","Polishing <chrono>","Kona","|Complete|","3.8"
+"`P0007R1 <https://wg21.link/p0007r1>`__","LWG","Constant View: A proposal for a ``std::as_const``\  helper function template.","Kona","|Complete|","3.8"
+"`P0156R0 <https://wg21.link/p0156r0>`__","LWG","Variadic lock_guard(rev 3).","Kona","*Reverted in Kona*","3.9"
+"`P0074R0 <https://wg21.link/p0074r0>`__","LWG","Making ``std::owner_less``\  more flexible","Kona","|Complete|","3.8"
+"`P0013R1 <https://wg21.link/p0013r1>`__","LWG","Logical type traits rev 2","Kona","|Complete|","3.8"
+"","","","","",""
+"`P0024R2 <https://wg21.link/P0024R2>`__","LWG","The Parallelism TS Should be Standardized","Jacksonville","",""
+"`P0226R1 <https://wg21.link/P0226R1>`__","LWG","Mathematical Special Functions for C++17","Jacksonville","",""
+"`P0220R1 <https://wg21.link/P0220R1>`__","LWG","Adopt Library Fundamentals V1 TS Components for C++17","Jacksonville","|Complete|","16.0"
+"`P0218R1 <https://wg21.link/P0218R1>`__","LWG","Adopt the File System TS for C++17","Jacksonville","|Complete|","7.0"
+"`P0033R1 <https://wg21.link/P0033R1>`__","LWG","Re-enabling shared_from_this","Jacksonville","|Complete|","3.9"
+"`P0005R4 <https://wg21.link/P0005R4>`__","LWG","Adopt not_fn from Library Fundamentals 2 for C++17","Jacksonville","|Complete|","3.9"
+"`P0152R1 <https://wg21.link/P0152R1>`__","LWG","constexpr ``atomic::is_always_lock_free``\ ","Jacksonville","|Complete|","3.9"
+"`P0185R1 <https://wg21.link/P0185R1>`__","LWG","Adding [nothrow-]swappable traits","Jacksonville","|Complete|","3.9"
+"`P0253R1 <https://wg21.link/P0253R1>`__","LWG","Fixing a design mistake in the searchers interface","Jacksonville","|Complete|","3.9"
+"`P0025R0 <https://wg21.link/P0025R0>`__","LWG","An algorithm to ""clamp"" a value between a pair of boundary values","Jacksonville","|Complete|","3.9"
+"`P0154R1 <https://wg21.link/P0154R1>`__","LWG","constexpr std::hardware_{constructive,destructive}_interference_size","Jacksonville","|Partial| [#note-P0154]_","15.0"
+"`P0030R1 <https://wg21.link/P0030R1>`__","LWG","Proposal to Introduce a 3-Argument Overload to std::hypot","Jacksonville","|Complete|","3.9"
+"`P0031R0 <https://wg21.link/P0031R0>`__","LWG","A Proposal to Add Constexpr Modifiers to reverse_iterator, move_iterator, array and Range Access","Jacksonville","|Complete|","4.0"
+"`P0272R1 <https://wg21.link/P0272R1>`__","LWG","Give ``std::string``\  a non-const ``.data()``\  member function","Jacksonville","|Complete|","3.9"
+"`P0077R2 <https://wg21.link/P0077R2>`__","LWG","``is_callable``\ , the missing INVOKE related trait","Jacksonville","|Complete|","3.9"
+"","","","","",""
+"`p0032r3 <https://wg21.link/p0032r3>`__","LWG","Homogeneous interface for variant, any and optional","Oulu","|Complete|","4.0"
+"`p0040r3 <https://wg21.link/p0040r3>`__","LWG","Extending memory management tools","Oulu","|Complete|","4.0"
+"`p0063r3 <https://wg21.link/p0063r3>`__","LWG","C++17 should refer to C11 instead of C99","Oulu","|Complete|","7.0"
+"`p0067r3 <https://wg21.link/p0067r3>`__","LWG","Elementary string conversions","Oulu","Now `P0067R5 <https://wg21.link/P0067R5>`__","n/a"
+"`p0083r3 <https://wg21.link/p0083r3>`__","LWG","Splicing Maps and Sets","Oulu","|Complete|","8.0"
+"`p0084r2 <https://wg21.link/p0084r2>`__","LWG","Emplace Return Type","Oulu","|Complete|","4.0"
+"`p0088r3 <https://wg21.link/p0088r3>`__","LWG","Variant: a type-safe union for C++17","Oulu","|Complete|","4.0"
+"`p0137r1 <https://wg21.link/p0137r1>`__","CWG","Core Issue 1776: Replacement of class objects containing reference members","Oulu","|Complete|","6.0"
+"`p0163r0 <https://wg21.link/p0163r0>`__","LWG","shared_ptr::weak_type","Oulu","|Complete|","3.9"
+"`p0174r2 <https://wg21.link/p0174r2>`__","LWG","Deprecating Vestigial Library Parts in C++17","Oulu","|Complete|","15.0"
+"`p0175r1 <https://wg21.link/p0175r1>`__","LWG","Synopses for the C library","Oulu","",""
+"`p0180r2 <https://wg21.link/p0180r2>`__","LWG","Reserve a New Library Namespace for Future Standardization","Oulu","|Nothing To Do|","n/a"
+"`p0181r1 <https://wg21.link/p0181r1>`__","LWG","Ordered by Default","Oulu","*Removed in Kona*","n/a"
+"`p0209r2 <https://wg21.link/p0209r2>`__","LWG","make_from_tuple: apply for construction","Oulu","|Complete|","3.9"
+"`p0219r1 <https://wg21.link/p0219r1>`__","LWG","Relative Paths for Filesystem","Oulu","|Complete|","7.0"
+"`p0254r2 <https://wg21.link/p0254r2>`__","LWG","Integrating std::string_view and std::string","Oulu","|Complete|","4.0"
+"`p0258r2 <https://wg21.link/p0258r2>`__","LWG","has_unique_object_representations","Oulu","|Complete|","6.0"
+"`p0295r0 <https://wg21.link/p0295r0>`__","LWG","Adopt Selected Library Fundamentals V2 Components for C++17","Oulu","|Complete|","4.0"
+"`p0302r1 <https://wg21.link/p0302r1>`__","LWG","Removing Allocator Support in std::function","Oulu","|Complete|","4.0"
+"`p0307r2 <https://wg21.link/p0307r2>`__","LWG","Making Optional Greater Equal Again","Oulu","|Complete|","4.0"
+"`p0336r1 <https://wg21.link/p0336r1>`__","LWG","Better Names for Parallel Execution Policies in C++17","Oulu","",""
+"`p0337r0 <https://wg21.link/p0337r0>`__","LWG","Delete ``operator=``\  for polymorphic_allocator","Oulu","|Complete|","3.9"
+"`p0346r1 <https://wg21.link/p0346r1>`__","LWG","A <random> Nomenclature Tweak","Oulu","|Complete|","3.9"
+"`p0358r1 <https://wg21.link/p0358r1>`__","LWG","Fixes for not_fn","Oulu","|Complete|","3.9"
+"`p0371r1 <https://wg21.link/p0371r1>`__","LWG","Temporarily discourage memory_order_consume","Oulu","|Nothing To Do|","n/a"
+"`p0392r0 <https://wg21.link/p0392r0>`__","LWG","Adapting string_view by filesystem paths","Oulu","|Complete|","4.0"
+"`p0393r3 <https://wg21.link/p0393r3>`__","LWG","Making Variant Greater Equal","Oulu","|Complete|","4.0"
+"`P0394r4 <https://wg21.link/P0394r4>`__","LWG","Hotel Parallelifornia: terminate() for Parallel Algorithms Exception Handling","Oulu","",""
+"","","","","",""
+"`P0003R5 <https://wg21.link/P0003R5>`__","LWG","Removing Deprecated Exception Specifications from C++17","Issaquah","|Complete|","5.0"
+"`P0067R5 <https://wg21.link/P0067R5>`__","LWG","Elementary string conversions, revision 5","Issaquah","|Partial| [#note-P0067]_",""
+"`P0403R1 <https://wg21.link/P0403R1>`__","LWG","Literal suffixes for ``basic_string_view``\ ","Issaquah","|Complete|","4.0"
+"`P0414R2 <https://wg21.link/P0414R2>`__","LWG","Merging shared_ptr changes from Library Fundamentals to C++17","Issaquah","|Complete|","11.0"
+"`P0418R2 <https://wg21.link/P0418R2>`__","LWG","Fail or succeed: there is no atomic lattice","Issaquah","",""
+"`P0426R1 <https://wg21.link/P0426R1>`__","LWG","Constexpr for ``std::char_traits``\ ","Issaquah","|Complete|","4.0"
+"`P0435R1 <https://wg21.link/P0435R1>`__","LWG","Resolving LWG Issues re ``common_type``\ ","Issaquah","|Complete|","4.0"
+"`P0502R0 <https://wg21.link/P0502R0>`__","LWG","Throwing out of a parallel algorithm terminates - but how?","Issaquah","",""
+"`P0503R0 <https://wg21.link/P0503R0>`__","LWG","Correcting library usage of ""literal type""","Issaquah","|Complete|","4.0"
+"`P0504R0 <https://wg21.link/P0504R0>`__","LWG","Revisiting in-place tag types for any/optional/variant","Issaquah","|Complete|","4.0"
+"`P0505R0 <https://wg21.link/P0505R0>`__","LWG","Wording for GB 50 - constexpr for chrono","Issaquah","|Complete|","4.0"
+"`P0508R0 <https://wg21.link/P0508R0>`__","LWG","Wording for GB 58 - structured bindings for node_handles","Issaquah","",""
+"`P0509R1 <https://wg21.link/P0509R1>`__","LWG","Updating ""Restrictions on exception handling""","Issaquah","|Nothing To Do|","n/a"
+"`P0510R0 <https://wg21.link/P0510R0>`__","LWG","Disallowing references, incomplete types, arrays, and empty variants","Issaquah","|Complete|","4.0"
+"`P0513R0 <https://wg21.link/P0513R0>`__","LWG","Poisoning the Hash","Issaquah","|Complete|","5.0"
+"`P0516R0 <https://wg21.link/P0516R0>`__","LWG","Clarify That shared_future's Copy Operations have Wide Contracts","Issaquah","|Complete|","4.0"
+"`P0517R0 <https://wg21.link/P0517R0>`__","LWG","Make future_error Constructible","Issaquah","|Complete|","4.0"
+"`P0521R0 <https://wg21.link/P0521R0>`__","LWG","Proposed Resolution for CA 14 (shared_ptr use_count/unique)","Issaquah","|Nothing To Do|","n/a"
+"","","","","",""
+"`P0156R2 <https://wg21.link/P0156R2>`__","LWG","Variadic Lock guard(rev 5)","Kona","|Complete|","5.0"
+"`P0270R3 <https://wg21.link/P0270R3>`__","CWG","Removing C dependencies from signal handler wording","Kona","",""
+"`P0298R3 <https://wg21.link/P0298R3>`__","CWG","A byte type definition","Kona","|Complete|","5.0"
+"`P0317R1 <https://wg21.link/P0317R1>`__","LWG","Directory Entry Caching for Filesystem","Kona","|Complete|","7.0"
+"`P0430R2 <https://wg21.link/P0430R2>`__","LWG","File system library on non-POSIX-like operating systems","Kona","|Complete|","7.0"
+"`P0433R2 <https://wg21.link/P0433R2>`__","LWG","Toward a resolution of US7 and US14: Integrating template deduction for class templates into the standard library","Kona","|Complete|","14.0"
+"`P0452R1 <https://wg21.link/P0452R1>`__","LWG","Unifying <numeric> Parallel Algorithms","Kona","",""
+"`P0467R2 <https://wg21.link/P0467R2>`__","LWG","Iterator Concerns for Parallel Algorithms","Kona","",""
+"`P0492R2 <https://wg21.link/P0492R2>`__","LWG","Proposed Resolution of C++17 National Body Comments for Filesystems","Kona","|Complete|","7.0"
+"`P0518R1 <https://wg21.link/P0518R1>`__","LWG","Allowing copies as arguments to function objects given to parallel algorithms in response to CH11","Kona","",""
+"`P0523R1 <https://wg21.link/P0523R1>`__","LWG","Wording for CH 10: Complexity of parallel algorithms","Kona","",""
+"`P0548R1 <https://wg21.link/P0548R1>`__","LWG","common_type and duration","Kona","|Complete|","5.0"
+"`P0558R1 <https://wg21.link/P0558R1>`__","LWG","Resolving atomic<T> named base class inconsistencies","Kona","|Complete|",""
+"`P0574R1 <https://wg21.link/P0574R1>`__","LWG","Algorithm Complexity Constraints and Parallel Overloads","Kona","",""
+"`P0599R1 <https://wg21.link/P0599R1>`__","LWG","noexcept for hash functions","Kona","|Complete|","5.0"
+"`P0604R0 <https://wg21.link/P0604R0>`__","LWG","Resolving GB 55, US 84, US 85, US 86","Kona","|Complete|",""
+"`P0607R0 <https://wg21.link/P0607R0>`__","LWG","Inline Variables for the Standard Library","Kona","|In Progress| [#note-P0607]_","6.0"
+"`P0618R0 <https://wg21.link/P0618R0>`__","LWG","Deprecating <codecvt>","Kona","|Complete|","15.0"
+"`P0623R0 <https://wg21.link/P0623R0>`__","LWG","Final C++17 Parallel Algorithms Fixes","Kona","",""
+"","","","","",""
+"`P0682R1 <https://wg21.link/P0682R1>`__","LWG","Repairing elementary string conversions","Toronto","",""
+"`P0739R0 <https://wg21.link/P0739R0>`__","LWG","Some improvements to class template argument deduction integration into the standard library","Toronto","|Complete|","5.0"
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx20.rst b/app/src/main/cpp/libcxx/docs/Status/Cxx20.rst
new file mode 100644
index 0000000..11cd7c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx20.rst
@@ -0,0 +1,61 @@
+.. _cxx20-status:
+
+================================
+libc++ C++20 Status
+================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+================================
+
+In July 2017, the C++ standard committee created a draft for the next version of the C++ standard, initially known as "C++2a".
+In September 2020, the C++ standard committee approved this draft, and sent it to ISO for approval as C++20.
+
+This page shows the status of libc++; the status of clang's support of the language features is `here <https://clang.llvm.org/cxx_status.html#cxx20>`__.
+
+.. attention:: Features in unreleased drafts of the standard are subject to change.
+
+The groups that have contributed papers:
+
+-  CWG - Core Language Working group
+-  LWG - Library working group
+-  SG1 - Study group #1 (Concurrency working group)
+
+.. note:: "Nothing to do" means that no library changes were needed to implement this change.
+
+.. _paper-status-cxx20:
+
+Paper Status
+====================================
+
+.. csv-table::
+   :file: Cxx20Papers.csv
+   :header-rows: 1
+   :widths: auto
+
+.. note::
+
+   .. [#note-P0591] P0591: The changes in [mem.poly.allocator.mem] are missing.
+   .. [#note-P0645] P0645: The paper is implemented but still marked as an incomplete feature
+      (the feature-test macro is not set and the libary is only available when built with ``-fexperimental-library``).
+      Not yet implemented LWG-issues will cause API and ABI breakage.
+   .. [#note-P0966] P0966: It was previously erroneously marked as complete in version 8.0. See `bug 45368 <https://llvm.org/PR45368>`__.
+   .. [#note-P0619] P0619: Only sections D.8, D.9, D.10 and D.13 are implemented. Sections D.4, D.7, D.11, D.12, and D.14 remain undone.
+   .. [#note-P0883.1] P0883: shared_ptr and floating-point changes weren't applied as they themselves aren't implemented yet.
+   .. [#note-P0883.2] P0883: ``ATOMIC_FLAG_INIT`` was marked deprecated in version 14.0, but was undeprecated with the implementation of LWG3659 in version 15.0.
+   .. [#note-P2231] P2231: Optional is complete. The changes to variant haven't been implemented yet.
+
+.. _issues-status-cxx20:
+
+Library Working Group Issues Status
+====================================
+
+.. csv-table::
+   :file: Cxx20Issues.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx20Issues.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx20Issues.csv
new file mode 100644
index 0000000..db05461
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx20Issues.csv
@@ -0,0 +1,301 @@
+"Issue #","Issue Name","Meeting","Status","First released version","Labels"
+"`2070 <https://wg21.link/LWG2070>`__","``allocate_shared``\  should use ``allocator_traits<A>::construct``\ ","Toronto","Resolved by `P0674R1 <https://wg21.link/P0674R1>`__",""
+"`2444 <https://wg21.link/LWG2444>`__","Inconsistent complexity for ``std::sort_heap``\ ","Toronto","",""
+"`2593 <https://wg21.link/LWG2593>`__","Moved-from state of Allocators","Toronto","",""
+"`2597 <https://wg21.link/LWG2597>`__","``std::log``\  misspecified for complex numbers","Toronto","",""
+"`2783 <https://wg21.link/LWG2783>`__","``stack::emplace()``\  and ``queue::emplace()``\  should return ``decltype(auto)``\ ","Toronto","|Complete|",""
+"`2932 <https://wg21.link/LWG2932>`__","Constraints on parallel algorithm implementations are underspecified","Toronto","",""
+"`2937 <https://wg21.link/LWG2937>`__","Is ``equivalent(""existing_thing"", ""not_existing_thing"")``\  an error","Toronto","|Complete|",""
+"`2940 <https://wg21.link/LWG2940>`__","``result_of``\  specification also needs a little cleanup","Toronto","|Nothing To Do|",""
+"`2942 <https://wg21.link/LWG2942>`__","LWG 2873's resolution missed ``weak_ptr::owner_before``\ ","Toronto","|Complete|",""
+"`2954 <https://wg21.link/LWG2954>`__","Specialization of the convenience variable templates should be prohibited","Toronto","|Complete|",""
+"`2961 <https://wg21.link/LWG2961>`__","Bad postcondition for ``set_default_resource``\ ","Toronto","|Complete|","16.0"
+"`2966 <https://wg21.link/LWG2966>`__","Incomplete resolution of US 74","Toronto","|Nothing To Do|",""
+"`2974 <https://wg21.link/LWG2974>`__","Diagnose out of bounds ``tuple_element/variant_alternative``\ ","Toronto","|Complete|",""
+"","","","","",""
+"`2779 <https://wg21.link/LWG2779>`__","[networking.ts] Relax requirements on buffer sequence iterators","Albuquerque","",""
+"`2870 <https://wg21.link/LWG2870>`__","Default value of parameter theta of polar should be dependent","Albuquerque","|Complete|",""
+"`2935 <https://wg21.link/LWG2935>`__","What should create_directories do when p already exists but is not a directory?","Albuquerque","|Nothing To Do|",""
+"`2941 <https://wg21.link/LWG2941>`__","[thread.req.timing] wording should apply to both member and namespace-level functions","Albuquerque","|Nothing To Do|",""
+"`2944 <https://wg21.link/LWG2944>`__","LWG 2905 accidentally removed requirement that construction of the deleter doesn't throw an exception","Albuquerque","|Nothing To Do|",""
+"`2945 <https://wg21.link/LWG2945>`__","Order of template parameters in optional comparisons","Albuquerque","|Complete|",""
+"`2948 <https://wg21.link/LWG2948>`__","unique_ptr does not define operator<< for stream output","Albuquerque","|Complete|",""
+"`2950 <https://wg21.link/LWG2950>`__","std::byte operations are misspecified","Albuquerque","|Complete|",""
+"`2952 <https://wg21.link/LWG2952>`__","iterator_traits should work for pointers to cv T","Albuquerque","|Complete|",""
+"`2953 <https://wg21.link/LWG2953>`__","LWG 2853 should apply to deque::erase too","Albuquerque","|Complete|",""
+"`2958 <https://wg21.link/LWG2958>`__","Moves improperly defined as deleted","Albuquerque","|Complete|",""
+"`2964 <https://wg21.link/LWG2964>`__","Apparently redundant requirement for dynamic_pointer_cast","Albuquerque","",""
+"`2965 <https://wg21.link/LWG2965>`__","Non-existing path::native_string() in filesystem_error::what() specification","Albuquerque","|Nothing To Do|",""
+"`2972 <https://wg21.link/LWG2972>`__","What is ``is_trivially_destructible_v<int>``\ ?","Albuquerque","|Complete|",""
+"`2976 <https://wg21.link/LWG2976>`__","Dangling uses_allocator specialization for packaged_task","Albuquerque","|Complete|",""
+"`2977 <https://wg21.link/LWG2977>`__","unordered_meow::merge() has incorrect Throws: clause","Albuquerque","|Nothing To Do|",""
+"`2978 <https://wg21.link/LWG2978>`__","Hash support for pmr::string and friends","Albuquerque","|Complete|","16.0"
+"`2979 <https://wg21.link/LWG2979>`__","aligned_union should require complete object types","Albuquerque","|Complete|",""
+"`2980 <https://wg21.link/LWG2980>`__","Cannot compare_exchange empty pointers","Albuquerque","",""
+"`2981 <https://wg21.link/LWG2981>`__","Remove redundant deduction guides from standard library","Albuquerque","|Nothing To Do|",""
+"`2982 <https://wg21.link/LWG2982>`__","Making size_type consistent in associative container deduction guides","Albuquerque","",""
+"`2988 <https://wg21.link/LWG2988>`__","Clause 32 cleanup missed one typename","Albuquerque","|Complete|","13.0"
+"`2993 <https://wg21.link/LWG2993>`__","reference_wrapper<T> conversion from T&&","Albuquerque","|Complete|","13.0"
+"`2998 <https://wg21.link/LWG2998>`__","Requirements on function objects passed to {``forward_``,}list-specific algorithms","Albuquerque","|Nothing To Do|",""
+"`3001 <https://wg21.link/LWG3001>`__","weak_ptr::element_type needs remove_extent_t","Albuquerque","|Complete|","14.0"
+"`3024 <https://wg21.link/LWG3024>`__","variant's copies must be deleted instead of disabled via SFINAE","Albuquerque","|Complete|",""
+"","","","","",""
+"`2164 <https://wg21.link/LWG2164>`__","What are the semantics of ``vector.emplace(vector.begin(), vector.back())``\ ?","Jacksonville","|Complete|",""
+"`2243 <https://wg21.link/LWG2243>`__","``istream::putback``\  problem","Jacksonville","|Complete|",""
+"`2816 <https://wg21.link/LWG2816>`__","``resize_file``\  has impossible postcondition","Jacksonville","|Nothing To Do|",""
+"`2843 <https://wg21.link/LWG2843>`__","Unclear behavior of ``std::pmr::memory_resource::do_allocate()``\ ","Jacksonville","|Complete|",""
+"`2849 <https://wg21.link/LWG2849>`__","Why does ``!is_regular_file(from)``\  cause ``copy_file``\  to report a ""file already exists"" error?","Jacksonville","|Nothing To Do|",""
+"`2851 <https://wg21.link/LWG2851>`__","``std::filesystem``\  enum classes are now underspecified","Jacksonville","|Nothing To Do|",""
+"`2946 <https://wg21.link/LWG2946>`__","LWG 2758's resolution missed further corrections","Jacksonville","|Complete|",""
+"`2969 <https://wg21.link/LWG2969>`__","``polymorphic_allocator::construct()``\  shouldn't pass ``resource()``\ ","Jacksonville","|Complete|",""
+"`2975 <https://wg21.link/LWG2975>`__","Missing case for ``pair``\  construction in scoped and polymorphic allocators","Jacksonville","",""
+"`2989 <https://wg21.link/LWG2989>`__","``path``\ 's stream insertion operator lets you insert everything under the sun","Jacksonville","|Complete|",""
+"`3000 <https://wg21.link/LWG3000>`__","``monotonic_memory_resource::do_is_equal``\  uses ``dynamic_cast``\  unnecessarily","Jacksonville","|Complete|","16.0"
+"`3002 <https://wg21.link/LWG3002>`__","[networking.ts] ``basic_socket_acceptor::is_open()``\  isn't ``noexcept``\ ","Jacksonville","",""
+"`3004 <https://wg21.link/LWG3004>`__","|sect|\ [string.capacity] and |sect|\ [vector.capacity] should specify time complexity for ``capacity()``\ ","Jacksonville","|Nothing To Do|",""
+"`3005 <https://wg21.link/LWG3005>`__","Destruction order of arrays by ``make_shared/allocate_shared``\  only recommended?","Jacksonville","",""
+"`3007 <https://wg21.link/LWG3007>`__","``allocate_shared``\  should rebind allocator to *cv*-unqualified ``value_type``\  for construction","Jacksonville","",""
+"`3009 <https://wg21.link/LWG3009>`__","Including ``<string_view>``\  doesn't provide ``std::size/empty/data``\ ","Jacksonville","|Complete|",""
+"`3010 <https://wg21.link/LWG3010>`__","[networking.ts] ``uses_executor``\  says ""if a type ``T::executor_type``\  exists""","Jacksonville","",""
+"`3013 <https://wg21.link/LWG3013>`__","``(recursive_)directory_iterator``\  construction and traversal should not be ``noexcept``\ ","Jacksonville","|Complete|",""
+"`3014 <https://wg21.link/LWG3014>`__","More ``noexcept``\  issues with filesystem operations","Jacksonville","|Complete|",""
+"`3015 <https://wg21.link/LWG3015>`__","``copy_options::*unspecified*``\  underspecified","Jacksonville","|Nothing To Do|",""
+"`3017 <https://wg21.link/LWG3017>`__","``list splice``\  functions should use ``addressof``\ ","Jacksonville","|Complete|",""
+"`3020 <https://wg21.link/LWG3020>`__","[networking.ts] Remove spurious nested ``value_type``\  buffer sequence requirement","Jacksonville","",""
+"`3026 <https://wg21.link/LWG3026>`__","``filesystem::weakly_canonical``\  still defined in terms of ``canonical(p, base)``\ ","Jacksonville","|Complete|",""
+"`3030 <https://wg21.link/LWG3030>`__","Who shall meet the requirements of ``try_lock``\ ?","Jacksonville","|Nothing To Do|",""
+"`3034 <https://wg21.link/LWG3034>`__","P0767R1 breaks previously-standard-layout types","Jacksonville","|Complete|",""
+"`3035 <https://wg21.link/LWG3035>`__","``std::allocator``\ 's constructors should be ``constexpr``\ ","Jacksonville","|Complete|",""
+"`3039 <https://wg21.link/LWG3039>`__","Unnecessary ``decay``\  in ``thread``\  and ``packaged_task``\ ","Jacksonville","|Complete|",""
+"`3041 <https://wg21.link/LWG3041>`__","Unnecessary ``decay``\  in ``reference_wrapper``\ ","Jacksonville","|Complete|",""
+"`3042 <https://wg21.link/LWG3042>`__","``is_literal_type_v``\  should be inline","Jacksonville","|Complete|",""
+"`3043 <https://wg21.link/LWG3043>`__","Bogus postcondition for ``filesystem_error``\  constructor","Jacksonville","|Complete|",""
+"`3045 <https://wg21.link/LWG3045>`__","``atomic<floating-point>``\  doesn't have ``value_type``\  or ``difference_type``\ ","Jacksonville","",""
+"`3048 <https://wg21.link/LWG3048>`__","``transform_reduce(exec, first1, last1, first2, init)``\  discards execution policy","Jacksonville","",""
+"`3051 <https://wg21.link/LWG3051>`__","Floating point classifications were inadvertently changed in P0175","Jacksonville","|Nothing To Do|",""
+"`3075 <https://wg21.link/LWG3075>`__","``basic_string``\  needs deduction guides from ``basic_string_view``\ ","Jacksonville","|Complete|",""
+"","","","","",""
+"`2139 <https://wg21.link/LWG2139>`__","What is a user-defined type?","Rapperswil","",""
+"`2970 <https://wg21.link/LWG2970>`__","Return type of std::visit misspecified","Rapperswil","",""
+"`3058 <https://wg21.link/LWG3058>`__","Parallel adjacent_difference shouldn't require creating temporaries","Rapperswil","",""
+"`3062 <https://wg21.link/LWG3062>`__","Unnecessary decay_t in is_execution_policy_v should be remove_cvref_t","Rapperswil","",""
+"`3067 <https://wg21.link/LWG3067>`__","recursive_directory_iterator::pop must invalidate","Rapperswil","|Nothing To Do|",""
+"`3071 <https://wg21.link/LWG3071>`__","[networking.ts] read_until still refers to ""input sequence""","Rapperswil","|Nothing To Do|",""
+"`3074 <https://wg21.link/LWG3074>`__","Non-member functions for valarray should only deduce from the valarray","Rapperswil","",""
+"`3076 <https://wg21.link/LWG3076>`__","basic_string CTAD ambiguity","Rapperswil","|Complete|",""
+"`3079 <https://wg21.link/LWG3079>`__","LWG 2935 forgot to fix the existing_p overloads of create_directory","Rapperswil","|Nothing To Do|",""
+"`3080 <https://wg21.link/LWG3080>`__","Floating point from_chars pattern specification breaks round-tripping","Rapperswil","",""
+"`3083 <https://wg21.link/LWG3083>`__","What should ios::iword(-1) do?","Rapperswil","|Nothing To Do|",""
+"`3094 <https://wg21.link/LWG3094>`__","[time.duration.io]p4 makes surprising claims about encoding","Rapperswil","",""
+"`3100 <https://wg21.link/LWG3100>`__","Unnecessary and confusing ""empty span"" wording","Rapperswil","|Nothing To Do|",""
+"`3102 <https://wg21.link/LWG3102>`__","Clarify span iterator and ``const_iterator`` behavior","Rapperswil","|Complete|",""
+"`3104 <https://wg21.link/LWG3104>`__","Fixing duration division","Rapperswil","|Complete|",""
+"","","","","",""
+"`2183 <https://wg21.link/LWG2183>`__","Muddled allocator requirements for ``match_results``\  constructors","San Diego","|Complete|",""
+"`2184 <https://wg21.link/LWG2184>`__","Muddled allocator requirements for ``match_results``\  assignments","San Diego","|Complete|",""
+"`2412 <https://wg21.link/LWG2412>`__","``promise::set_value()``\  and ``promise::get_future()``\  should not race","San Diego","",""
+"`2499 <https://wg21.link/LWG2499>`__","``operator>>(basic_istream&, CharT*)``\  makes it hard to avoid buffer overflows","San Diego","Resolved by P0487R1",""
+"`2682 <https://wg21.link/LWG2682>`__","``filesystem::copy()``\  won't create a symlink to a directory","San Diego","|Nothing To Do|",""
+"`2697 <https://wg21.link/LWG2697>`__","[concurr.ts] Behavior of ``future/shared_future``\  unwrapping constructor when given an invalid ``future``\ ","San Diego","",""
+"`2797 <https://wg21.link/LWG2797>`__","Trait precondition violations","San Diego","Resolved by 1285R0",""
+"`2936 <https://wg21.link/LWG2936>`__","Path comparison is defined in terms of the generic format","San Diego","|Complete|",""
+"`2943 <https://wg21.link/LWG2943>`__","Problematic specification of the wide version of ``basic_filebuf::open``\ ","San Diego","|Nothing To Do|",""
+"`2960 <https://wg21.link/LWG2960>`__","[fund.ts.v3] ``nonesuch``\  is insufficiently useless","San Diego","|Complete|",""
+"`2995 <https://wg21.link/LWG2995>`__","``basic_stringbuf``\  default constructor forbids it from using SSO capacity","San Diego","",""
+"`2996 <https://wg21.link/LWG2996>`__","Missing rvalue overloads for ``shared_ptr``\  operations","San Diego","",""
+"`3008 <https://wg21.link/LWG3008>`__","``make_shared``\  (sub)object destruction semantics are not specified","San Diego","",""
+"`3022 <https://wg21.link/LWG3022>`__","``is_convertible<derived*, base*>``\  may lead to ODR","San Diego","Resolved by 1285R0",""
+"`3025 <https://wg21.link/LWG3025>`__","Map-like container deduction guides should use ``pair<Key, T>``\ , not ``pair<const Key, T>``\ ","San Diego","|Complete|",""
+"`3031 <https://wg21.link/LWG3031>`__","Algorithms and predicates with non-const reference arguments","San Diego","",""
+"`3037 <https://wg21.link/LWG3037>`__","``polymorphic_allocator``\  and incomplete types","San Diego","|Complete|","16.0"
+"`3038 <https://wg21.link/LWG3038>`__","``polymorphic_allocator::allocate``\  should not allow integer overflow to create vulnerabilities","San Diego","|Complete|","14.0"
+"`3054 <https://wg21.link/LWG3054>`__","``uninitialized_copy``\  appears to not be able to meet its exception-safety guarantee","San Diego","|Nothing To Do|",""
+"`3065 <https://wg21.link/LWG3065>`__","LWG 2989 missed that all ``path``\ 's other operators should be hidden friends as well","San Diego","|Complete|",""
+"`3096 <https://wg21.link/LWG3096>`__","``path::lexically_relative``\  is confused by trailing slashes","San Diego","|Complete|",""
+"`3116 <https://wg21.link/LWG3116>`__","``OUTERMOST_ALLOC_TRAITS``\  needs ``remove_reference_t``\ ","San Diego","",""
+"`3122 <https://wg21.link/LWG3122>`__","``__cpp_lib_chrono_udls``\  was accidentally dropped","San Diego","|Complete|",""
+"`3127 <https://wg21.link/LWG3127>`__","``basic_osyncstream::rdbuf``\  needs a ``const_cast``\ ","San Diego","",""
+"`3128 <https://wg21.link/LWG3128>`__","``strstream::rdbuf``\  needs a ``const_cast``\ ","San Diego","|Nothing To Do|",""
+"`3129 <https://wg21.link/LWG3129>`__","``regex_token_iterator``\  constructor uses wrong pointer arithmetic","San Diego","",""
+"`3130 <https://wg21.link/LWG3130>`__","|sect|\ [input.output] needs many ``addressof``\ ","San Diego","",""
+"`3131 <https://wg21.link/LWG3131>`__","``addressof``\  all the things","San Diego","",""
+"`3132 <https://wg21.link/LWG3132>`__","Library needs to ban macros named ``expects``\  or ``ensures``\ ","San Diego","|Nothing To Do|",""
+"`3134 <https://wg21.link/LWG3134>`__","[fund.ts.v3] LFTSv3 contains extraneous [meta] variable templates that should have been deleted by P09961","San Diego","Resolved by P1210R0",""
+"`3137 <https://wg21.link/LWG3137>`__","Header for ``__cpp_lib_to_chars``\ ","San Diego","|Complete|",""
+"`3140 <https://wg21.link/LWG3140>`__","``COMMON_REF``\ is unimplementable as specified","San Diego","|Nothing To Do|",""
+"`3145 <https://wg21.link/LWG3145>`__","``file_clock``\  breaks ABI for C++17 implementations","San Diego","|Complete|",""
+"`3147 <https://wg21.link/LWG3147>`__","Definitions of ""likely"" and ""unlikely"" are likely to cause problems","San Diego","",""
+"`3148 <https://wg21.link/LWG3148>`__","``<concepts>``\  should be freestanding","San Diego","",""
+"`3153 <https://wg21.link/LWG3153>`__","``Common``\  and ``common_type``\  have too little in common","San Diego","|Complete|","13.0"
+"`3154 <https://wg21.link/LWG3154>`__","``Common``\  and ``CommonReference``\  have a common defect","San Diego","|Nothing To Do|",""
+"","","","","",""
+"`3012 <https://wg21.link/LWG3012>`__","``atomic<T>``\  is unimplementable for non-``is_trivially_copy_constructible T``\ ","Kona","",""
+"`3040 <https://wg21.link/LWG3040>`__","``basic_string_view::starts_with``\  *Effects* are incorrect","Kona","|Complete|",""
+"`3077 <https://wg21.link/LWG3077>`__","``(push|emplace)_back``\  should invalidate the ``end``\  iterator","Kona","|Nothing To Do|",""
+"`3087 <https://wg21.link/LWG3087>`__","One final ``&x``\  in |sect|\ [list.ops]","Kona","|Nothing To Do|",""
+"`3101 <https://wg21.link/LWG3101>`__","``span``\ 's ``Container``\  constructors need another constraint","Kona","|Complete|",""
+"`3112 <https://wg21.link/LWG3112>`__","``system_error``\  and ``filesystem_error``\  constructors taking a ``string``\  may not be able to meet their postconditions","Kona","",""
+"`3119 <https://wg21.link/LWG3119>`__","Program-definedness of closure types","Kona","|Nothing To Do|",""
+"`3133 <https://wg21.link/LWG3133>`__","Modernizing numeric type requirements","Kona","",""
+"`3144 <https://wg21.link/LWG3144>`__","``span``\  does not have a ``const_pointer``\  typedef","Kona","|Complete|",""
+"`3173 <https://wg21.link/LWG3173>`__","Enable CTAD for ``ref-view``\ ","Kona","|Complete|","15.0","|ranges|"
+"`3179 <https://wg21.link/LWG3179>`__","``subrange``\  should always model ``Range``\ ","Kona","|Nothing To Do|","","|ranges|"
+"`3180 <https://wg21.link/LWG3180>`__","Inconsistently named return type for ``ranges::minmax_element``\ ","Kona","|Complete|","15.0","|ranges|"
+"`3182 <https://wg21.link/LWG3182>`__","Specification of ``Same``\  could be clearer","Kona","|Complete|","15.0"
+"","","","","",""
+"`2899 <https://wg21.link/LWG2899>`__","``is_(nothrow_)move_constructible``\  and ``tuple``\ , ``optional``\  and ``unique_ptr``\ ","Cologne","",""
+"`3055 <https://wg21.link/LWG3055>`__","``path::operator+=(*single-character*)``\  misspecified","Cologne","|Complete|","7.0"
+"`3158 <https://wg21.link/LWG3158>`__","``tuple(allocator_arg_t, const Alloc&)``\  should be conditionally explicit","Cologne","|Complete|","10.0"
+"`3169 <https://wg21.link/LWG3169>`__","``ranges``\  permutation generators discard useful information","Cologne","|Complete|","15.0","|ranges|"
+"`3183 <https://wg21.link/LWG3183>`__","Normative permission to specialize Ranges variable templates","Cologne","|Nothing To Do|","","|ranges|"
+"`3184 <https://wg21.link/LWG3184>`__","Inconsistencies in ``bind_front``\  wording","Cologne","|Complete|","13.0"
+"`3185 <https://wg21.link/LWG3185>`__","Uses-allocator construction functions missing ``constexpr``\  and ``noexcept``\ ","Cologne","|Complete|","16.0"
+"`3186 <https://wg21.link/LWG3186>`__","``ranges``\  removal, partition, and ``partial_sort_copy``\  algorithms discard useful information","Cologne","|Complete|","15.0","|ranges|"
+"`3187 <https://wg21.link/LWG3187>`__","`P0591R4 <https://wg21.link/p0591r4>`__ reverted DR 2586 fixes to ``scoped_allocator_adaptor::construct()``\ ","Cologne","",""
+"`3191 <https://wg21.link/LWG3191>`__","``std::ranges::shuffle``\  synopsis does not match algorithm definition","Cologne","|Complete|","15.0","|ranges|"
+"`3196 <https://wg21.link/LWG3196>`__","``std::optional<T>``\  is ill-formed is ``T``\  is an array","Cologne","|Complete|",""
+"`3198 <https://wg21.link/LWG3198>`__","Bad constraint on ``std::span::span()``\ ","Cologne","|Complete|",""
+"`3199 <https://wg21.link/LWG3199>`__","``istream >> bitset<0>``\  fails","Cologne","",""
+"`3202 <https://wg21.link/LWG3202>`__","P0318R1 was supposed to be revised","Cologne","|Complete|",""
+"`3206 <https://wg21.link/LWG3206>`__","``year_month_day``\  conversion to ``sys_days``\  uses not-existing member function","Cologne","|Complete|",""
+"`3208 <https://wg21.link/LWG3208>`__","``Boolean``\ 's expression requirements are ordered inconsistently","Cologne","|Nothing To Do|",""
+"`3209 <https://wg21.link/LWG3209>`__","Expression in ``year::ok()``\  returns clause is ill-formed","Cologne","|Complete|",""
+"","","","","",""
+"`3231 <https://wg21.link/LWG3231>`__","``year_month_day_last::day``\  specification does not cover ``!ok()``\  values","Belfast","|Nothing To Do|",""
+"`3225 <https://wg21.link/LWG3225>`__","``zoned_time``\  converting constructor shall not be ``noexcept``\ ","Belfast","","","|chrono|"
+"`3190 <https://wg21.link/LWG3190>`__","``std::allocator::allocate``\  sometimes returns too little storage","Belfast","|Complete|","14.0"
+"`3218 <https://wg21.link/LWG3218>`__","Modifier for ``%d``\  parse flag does not match POSIX and ``format``\  specification","Belfast","","","|chrono| |format|"
+"`3224 <https://wg21.link/LWG3224>`__","``zoned_time``\  constructor from ``TimeZonePtr``\  does not specify initialization of ``tp_``\ ","Belfast","","","|chrono|"
+"`3230 <https://wg21.link/LWG3230>`__","Format specifier ``%y/%Y``\  is missing locale alternative versions","Belfast","|Complete|","16.0","|chrono| |format|"
+"`3232 <https://wg21.link/LWG3232>`__","Inconsistency in ``zoned_time``\  deduction guides","Belfast","","","|chrono|"
+"`3222 <https://wg21.link/LWG3222>`__","P0574R1 introduced preconditions on non-existent parameters","Belfast","",""
+"`3221 <https://wg21.link/LWG3221>`__","Result of ``year_month``\  arithmetic with ``months``\  is ambiguous","Belfast","|Complete|","8.0"
+"`3235 <https://wg21.link/LWG3235>`__","``parse``\  manipulator without abbreviation is not callable","Belfast","",""
+"`3246 <https://wg21.link/LWG3246>`__","What are the constraints on the template parameter of ``basic_format_arg``\ ?","Belfast","","","|format|"
+"`3253 <https://wg21.link/LWG3253>`__","``basic_syncbuf::basic_syncbuf()``\  should not be explicit","Belfast","",""
+"`3245 <https://wg21.link/LWG3245>`__","Unnecessary restriction on ``'%p'``\  parse specifier","Belfast","","","|chrono|"
+"`3244 <https://wg21.link/LWG3244>`__","Constraints for ``Source``\  in |sect|\ [fs.path.req] insufficiently constrainty","Belfast","",""
+"`3241 <https://wg21.link/LWG3241>`__","``chrono-spec``\  grammar ambiguity in |sect|\ [time.format]","Belfast","|Complete|","16.0","|chrono| |format|"
+"`3257 <https://wg21.link/LWG3257>`__","Missing feature testing macro update from P0858","Belfast","",""
+"`3256 <https://wg21.link/LWG3256>`__","Feature testing macro for ``constexpr``\  algorithms","Belfast","|Complete|","13.0"
+"`3273 <https://wg21.link/LWG3273>`__","Specify ``weekday_indexed``\  to range of ``[0, 7]``\ ","Belfast","|Complete|","16.0","|chrono|"
+"`3070 <https://wg21.link/LWG3070>`__","``path::lexically_relative``\  causes surprising results if a filename can also be a  *root-name*","Belfast","",""
+"`3266 <https://wg21.link/LWG3266>`__","``to_chars(bool)``\  should be deleted","Belfast","|Complete|","14.0"
+"`3272 <https://wg21.link/LWG3272>`__","``%I%p``\  should parse/format ``duration``\  since midnight","Belfast","","","|chrono| |format|"
+"`3259 <https://wg21.link/LWG3259>`__","The definition of *constexpr iterators* should be adjusted","Belfast","|Nothing To Do|",""
+"`3103 <https://wg21.link/LWG3103>`__","Errors in taking subview of ``span``\  should be ill-formed where possible","Belfast","",""
+"`3274 <https://wg21.link/LWG3274>`__","Missing feature test macro for ``<span>``\ ","Belfast","|Complete|","11.0"
+"`3276 <https://wg21.link/LWG3276>`__","Class ``split_view::outer_iterator::value_type``\  should inherit from ``view_interface``\ ","Belfast","|Complete|","15.0","|ranges|"
+"`3277 <https://wg21.link/LWG3277>`__","Pre-increment on prvalues is not a requirement of ``weakly_incrementable``\ ","Belfast","|Nothing To Do|","","|ranges|"
+"`3149 <https://wg21.link/LWG3149>`__","``DefaultConstructible``\  should require default initialization","Belfast","|Complete|","13.0"
+"","","","","",""
+"`1203 <https://wg21.link/LWG1203>`__","More useful rvalue stream insertion","Prague","|Complete|","12.0"
+"`2859 <https://wg21.link/LWG2859>`__","Definition of *reachable* in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object","Prague","",""
+"`3018 <https://wg21.link/LWG3018>`__","``shared_ptr``\  of function type","Prague","",""
+"`3050 <https://wg21.link/LWG3050>`__","Conversion specification problem in ``chrono::duration``\  constructor","Prague","","","|chrono|"
+"`3141 <https://wg21.link/LWG3141>`__","``CopyConstructible``\  doesn't preserve source values","Prague","|Nothing to do|",""
+"`3150 <https://wg21.link/LWG3150>`__","``UniformRandomBitGenerator``\  should validate ``min``\  and ``max``\ ","Prague","|Complete|","13.0","|ranges|"
+"`3175 <https://wg21.link/LWG3175>`__","The ``CommonReference``\  requirement of concept ``SwappableWith``\  is not satisfied in the example","Prague","|Complete|","13.0"
+"`3194 <https://wg21.link/LWG3194>`__","``ConvertibleTo``\  prose does not match code","Prague","|Complete|","13.0"
+"`3200 <https://wg21.link/LWG3200>`__","``midpoint``\  should not constrain ``T``\  is complete","Prague","|Nothing To Do|",""
+"`3201 <https://wg21.link/LWG3201>`__","``lerp``\  should be marked as ``noexcept``\ ","Prague","|Complete|",""
+"`3226 <https://wg21.link/LWG3226>`__","``zoned_time``\  constructor from ``string_view``\  should accept ``zoned_time<Duration2, TimeZonePtr2>``\ ","Prague","","","|chrono|"
+"`3233 <https://wg21.link/LWG3233>`__","Broken requirements for ``shared_ptr``\  converting constructors","Prague","",""
+"`3237 <https://wg21.link/LWG3237>`__","LWG 3038 and 3190 have inconsistent PRs","Prague","|Complete|","16.0"
+"`3238 <https://wg21.link/LWG3238>`__","Insufficiently-defined behavior of ``std::function``\  deduction guides","Prague","",""
+"`3242 <https://wg21.link/LWG3242>`__","``std::format``\ : missing rules for ``arg-id``\  in ``width``\  and ``precision``\ ","Prague","|Complete|","Clang 14","|format|"
+"`3243 <https://wg21.link/LWG3243>`__","``std::format``\  and negative zeroes","Prague","|Complete|","14.0","|format|"
+"`3247 <https://wg21.link/LWG3247>`__","``ranges::iter_move``\  should perform ADL-only lookup of ``iter_move``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3248 <https://wg21.link/LWG3248>`__","``std::format``\  ``#b``\ , ``#B``\ , ``#o``\ , ``#x``\ , and ``#X``\   presentation types misformat negative numbers","Prague","|Complete|","14.0","|format|"
+"`3250 <https://wg21.link/LWG3250>`__","``std::format``\ : ``#``\  (alternate form) for NaN and inf","Prague","|Complete|","14.0","|format|"
+"`3251 <https://wg21.link/LWG3251>`__","Are ``std::format``\  alignment specifiers applied to string arguments?","Prague","|Complete|","14.0","|format|"
+"`3252 <https://wg21.link/LWG3252>`__","Parse locale's aware modifiers for commands are not consistent with POSIX spec","Prague","","","|chrono|"
+"`3254 <https://wg21.link/LWG3254>`__","Strike ``stop_token``\ 's ``operator!=``\ ","Prague","",""
+"`3255 <https://wg21.link/LWG3255>`__","``span``\ 's ``array``\  constructor is too strict","Prague","|Complete|",""
+"`3260 <https://wg21.link/LWG3260>`__","``year_month*``\  arithmetic rejects durations convertible to years","Prague","","","|chrono|"
+"`3262 <https://wg21.link/LWG3262>`__","Formatting of negative durations is not specified","Prague","|Complete|","16.0","|chrono| |format|"
+"`3264 <https://wg21.link/LWG3264>`__","``sized_range``\  and ``ranges::size``\  redundantly use ``disable_sized_range``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3269 <https://wg21.link/LWG3269>`__","Parse manipulators do not specify the result of the extraction from stream","Prague","","","|chrono|"
+"`3270 <https://wg21.link/LWG3270>`__","Parsing and formatting ``%j``\  with ``duration``\ s","Prague","|Partial|","","|chrono| |format|"
+"`3280 <https://wg21.link/LWG3280>`__","View converting constructors can cause constraint recursion and are unneeded","Prague","|Complete|","15.0","|ranges|"
+"`3281 <https://wg21.link/LWG3281>`__","Conversion from ``*pair-like*``\  types to ``subrange``\  is a silent semantic promotion","Prague","|Complete|","15.0","|ranges|"
+"`3282 <https://wg21.link/LWG3282>`__","``subrange``\  converting constructor should disallow derived to base conversions","Prague","|Complete|","15.0","|ranges|"
+"`3284 <https://wg21.link/LWG3284>`__","``random_access_iterator``\  semantic constraints accidentally promote difference type using unary negate","Prague","|Nothing To Do|","","|ranges|"
+"`3285 <https://wg21.link/LWG3285>`__","The type of a customization point object shall satisfy ``semiregular``\ ","Prague","|Nothing To Do|","","|ranges|"
+"`3286 <https://wg21.link/LWG3286>`__","``ranges::size``\  is not required to be valid after a call to ``ranges::begin``\  on an input range","Prague","|Complete|","15.0","|ranges|"
+"`3291 <https://wg21.link/LWG3291>`__","``iota_view::iterator``\  has the wrong ``iterator_category``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3292 <https://wg21.link/LWG3292>`__","``iota_view``\  is under-constrained","Prague","|Complete|","15.0","|ranges|"
+"`3294 <https://wg21.link/LWG3294>`__","``zoned_time``\  deduction guides misinterprets ``string``\ /``char*``\ ","Prague","","","|chrono|"
+"`3296 <https://wg21.link/LWG3296>`__","Inconsistent default argument for ``basic_regex<>::assign``\ ","Prague","|Complete|",""
+"`3299 <https://wg21.link/LWG3299>`__","Pointers don't need customized iterator behavior","Prague","|Complete|","15.0","|ranges|"
+"`3300 <https://wg21.link/LWG3300>`__","Non-array ``ssize``\  overload is underconstrained","Prague","|Nothing To Do|",""
+"`3301 <https://wg21.link/LWG3301>`__","``transform_view::iterator``\  has incorrect ``iterator_category``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3302 <https://wg21.link/LWG3302>`__","Range adaptor objects ``keys``\  and ``values``\  are unspecified","Prague","|Complete|","16.0","|ranges|"
+"`3303 <https://wg21.link/LWG3303>`__","Bad ""``constexpr``\ "" marker for ``destroy/destroy_n``\ ","Prague","",""
+"`3304 <https://wg21.link/LWG3304>`__","Allocate functions of ``std::polymorphic_allocator``\  should require ``[[nodiscard]]``\ ","Prague","|Complete|","16.0"
+"`3307 <https://wg21.link/LWG3307>`__","``std::allocator<void>().allocate(n)``\ ","Prague","",""
+"`3310 <https://wg21.link/LWG3310>`__","Replace ``SIZE_MAX``\  with ``numeric_limits<size_t>::max()``\ ","Prague","|Complete|","16.0"
+"`3313 <https://wg21.link/LWG3313>`__","``join_view::iterator::operator--``\  is incorrectly constrained","Prague","|Complete|","14.0","|ranges|"
+"`3314 <https://wg21.link/LWG3314>`__","Is stream insertion behavior locale dependent when ``Period::type``\  is ``micro``\ ?","Prague","|Complete|","16.0","|chrono|"
+"`3315 <https://wg21.link/LWG3315>`__","Correct Allocator Default Behavior","Prague","",""
+"`3316 <https://wg21.link/LWG3316>`__","Correctly define epoch for ``utc_clock``\  / ``utc_timepoint``\ ","Prague","","","|chrono|"
+"`3317 <https://wg21.link/LWG3317>`__","Incorrect ``operator<<``\  for floating-point durations","Prague","","","|chrono|"
+"`3318 <https://wg21.link/LWG3318>`__","Clarify whether clocks can represent time before their epoch","Prague","","","|chrono|"
+"`3319 <https://wg21.link/LWG3319>`__","Properly reference specification of IANA time zone database","Prague","","","|chrono|"
+"`3320 <https://wg21.link/LWG3320>`__","``span::cbegin/cend``\  methods produce different results than ``std::[ranges::]cbegin/cend``\ ","Prague","|Complete|",""
+"`3321 <https://wg21.link/LWG3321>`__","``uninitialized_construct_using_allocator``\  should use ``construct_at``\ ","Prague","|Complete|","16.0"
+"`3323 <https://wg21.link/LWG3323>`__","``*has-tuple-element*``\  helper concept needs ``convertible_to``\ ","Prague","|Complete|","16.0","|ranges|"
+"`3324 <https://wg21.link/LWG3324>`__","Special-case ``std::strong/weak/partial_order``\  for pointers","Prague","|Complete|","14.0","|spaceship|"
+"`3325 <https://wg21.link/LWG3325>`__","Constrain return type of transformation function for ``transform_view``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3326 <https://wg21.link/LWG3326>`__","``enable_view``\  has false positives","Prague","|Complete|","15.0","|ranges|"
+"`3327 <https://wg21.link/LWG3327>`__","Format alignment specifiers vs. text direction","Prague","|Nothing To Do|","","|format|"
+"`3328 <https://wg21.link/LWG3328>`__","Clarify that ``std::string``\  is not good for UTF-8","Prague","",""
+"`3329 <https://wg21.link/LWG3329>`__","``totally_ordered_with``\  both directly and indirectly requires ``common_reference_with``\ ","Prague","|Complete|","13.0"
+"`3330 <https://wg21.link/LWG3330>`__","Include ``<compare>``\  from most library headers","Prague","|Complete|","13.0","|spaceship|"
+"`3331 <https://wg21.link/LWG3331>`__","Define ``totally_ordered/_with``\  in terms of ``partially-ordered-with``\ ","Prague","|Complete|","13.0"
+"`3332 <https://wg21.link/LWG3332>`__","Issue in |sect|\ [time.format]","Prague","|Complete|","16.0","|chrono| |format|"
+"`3334 <https://wg21.link/LWG3334>`__","``basic_osyncstream``\  move assignment and destruction calls ``basic_syncbuf::emit()``\  twice","Prague","",""
+"`3335 <https://wg21.link/LWG3335>`__","Resolve C++20 NB comments US 273 and GB 274","Prague","|Complete|","15.0","|ranges|"
+"`3338 <https://wg21.link/LWG3338>`__","Rename ``default_constructible``\  to ``default_initializable``\ ","Prague","|Complete|","13.0"
+"`3340 <https://wg21.link/LWG3340>`__","Formatting functions should throw on argument/format string mismatch in |sect|\ [format.functions]","Prague","|Complete|","14.0","|format|"
+"`3346 <https://wg21.link/LWG3346>`__","``pair``\  and ``tuple``\  copy and move constructor have backwards specification","Prague","",""
+"`3347 <https://wg21.link/LWG3347>`__","``std::pair<T, U>``\  now requires ``T``\  and ``U``\  to be less-than-comparable","Prague","",""
+"`3348 <https://wg21.link/LWG3348>`__","``__cpp_lib_unwrap_ref``\  in wrong header","Prague","|Complete|","12.0"
+"`3349 <https://wg21.link/LWG3349>`__","Missing ``__cpp_lib_constexpr_complex``\  for P0415R1","Prague","|Complete|","16.0"
+"`3350 <https://wg21.link/LWG3350>`__","Simplify return type of ``lexicographical_compare_three_way``\ ","Prague","","","|spaceship|"
+"`3351 <https://wg21.link/LWG3351>`__","``ranges::enable_safe_range``\  should not be constrained","Prague","|Complete|","15.0","|ranges|"
+"`3352 <https://wg21.link/LWG3352>`__","``strong_equality``\  isn't a thing","Prague","|Nothing To Do|","","|spaceship|"
+"`3354 <https://wg21.link/LWG3354>`__","``has_strong_structural_equality``\  has a meaningless definition","Prague","|Nothing To Do|","","|spaceship|"
+"`3355 <https://wg21.link/LWG3355>`__","The memory algorithms should support move-only input iterators introduced by P1207","Prague","|Complete|","15.0","|ranges|"
+"`3356 <https://wg21.link/LWG3356>`__","``__cpp_lib_nothrow_convertible``\  should be ``__cpp_lib_is_nothrow_convertible``\ ","Prague","|Complete|","12.0"
+"`3358 <https://wg21.link/LWG3358>`__","|sect|\ [span.cons] is mistaken that ``to_address``\  can throw","Prague","",""
+"`3359 <https://wg21.link/LWG3359>`__","``<chrono>``\  leap second support should allow for negative leap seconds","Prague","","","|chrono|"
+"`3360 <https://wg21.link/LWG3360>`__","``three_way_comparable_with``\  is inconsistent with similar concepts","Prague","|Nothing To Do|","","|spaceship|"
+"`3362 <https://wg21.link/LWG3362>`__","Strike ``stop_source``\ 's ``operator!=``\ ","Prague","",""
+"`3363 <https://wg21.link/LWG3363>`__","``drop_while_view``\  should opt-out of ``sized_range``\ ","Prague","|Nothing To Do|","","|ranges|"
+"`3364 <https://wg21.link/LWG3364>`__","Initialize data members of ranges and their iterators","Prague","|Complete|","16.0","|ranges|"
+"`3367 <https://wg21.link/LWG3367>`__","Integer-class conversions should not throw","Prague","|Nothing To Do|",""
+"`3369 <https://wg21.link/LWG3369>`__","``span``\ 's deduction-guide for built-in arrays doesn't work","Prague","|Complete|","14.0"
+"`3371 <https://wg21.link/LWG3371>`__","``visit_format_arg``\  and ``make_format_args``\  are not hidden friends","Prague","|Complete|","14.0","|format|"
+"`3372 <https://wg21.link/LWG3372>`__","``vformat_to``\  should not try to deduce ``Out``\  twice","Prague","|Complete|","14.0","|format|"
+"`3373 <https://wg21.link/LWG3373>`__","``{to,from}_chars_result``\  and ``format_to_n_result``\  need the  ""we really mean what we say"" wording","Prague","|Complete|","14.0","|format|"
+"`3374 <https://wg21.link/LWG3374>`__","P0653 + P1006 should have made the other ``std::to_address``\  overload ``constexpr``\ ","Prague","|Complete|","12.0"
+"`3375 <https://wg21.link/LWG3375>`__","``decay``\  in ``viewable_range``\  should be ``remove_cvref``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3377 <https://wg21.link/LWG3377>`__","``elements_view::iterator``\  befriends a specialization of itself","Prague","|Nothing To Do|","","|ranges|"
+"`3379 <https://wg21.link/LWG3379>`__","""``safe``\ "" in several library names is misleading","Prague","|Complete|","15.0","|ranges|"
+"`3380 <https://wg21.link/LWG3380>`__","``common_type``\  and comparison categories","Prague","|Complete|","15.0","|spaceship|"
+"`3381 <https://wg21.link/LWG3381>`__","``begin``\  and ``data``\  must agree for ``contiguous_range``\ ","Prague","|Nothing To Do|","","|ranges|"
+"`3382 <https://wg21.link/LWG3382>`__","NTTP for ``pair``\  and ``array``\ ","Prague","",""
+"`3383 <https://wg21.link/LWG3383>`__","|sect|\ [time.zone.leap.nonmembers] ``sys_seconds``\  should be replaced with ``seconds``\ ","Prague","","","|chrono|"
+"`3384 <https://wg21.link/LWG3384>`__","``transform_view::*sentinel*``\  has an incorrect ``operator-``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3385 <https://wg21.link/LWG3385>`__","``common_iterator``\  is not sufficiently constrained for non-copyable iterators","Prague","|Complete|","15.0","|ranges|"
+"`3387 <https://wg21.link/LWG3387>`__","|sect|\ [range.reverse.view] ``reverse_view<V>``\  unintentionally requires ``range<const V>``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3388 <https://wg21.link/LWG3388>`__","``view``\  iterator types have ill-formed ``<=>``\  operators","Prague","|Complete|","16.0","|ranges|"
+"`3389 <https://wg21.link/LWG3389>`__","A move-only iterator still does not have a ``counted_iterator``\ ","Prague","|Complete|","15.0","|ranges|"
+"`3390 <https://wg21.link/LWG3390>`__","``make_move_iterator()``\  cannot be used to construct a ``move_iterator``\  for a move-only iterator","Prague","|Complete|","14.0","|ranges|"
+"`3393 <https://wg21.link/LWG3393>`__","Missing/incorrect feature test macro for coroutines","Prague","|Complete|","14.0"
+"`3395 <https://wg21.link/LWG3395>`__","Definition for three-way comparison needs to be updated (US 152)","Prague","","","|spaceship|"
+"`3396 <https://wg21.link/LWG3396>`__","Clarify point of reference for ``source_location::current()``\  (DE 169)","Prague","|Nothing To Do|","16.0"
+"`3397 <https://wg21.link/LWG3397>`__","``ranges::basic_istream_view::iterator``\  should not provide ``iterator_category``\ ","Prague","|Complete|","16.0","|ranges|"
+"`3398 <https://wg21.link/LWG3398>`__","``tuple_element_t``\  is also wrong for ``const subrange``\ ","Prague","|Complete|","14.0","|ranges|"
+"`3446 <https://wg21.link/LWG3446>`__","``indirectly_readable_traits``\  ambiguity for types with both ``value_type``\  and ``element_type``\ ","November virtual meeting","|Complete|","13.0","|ranges|"
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx20Papers.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx20Papers.csv
new file mode 100644
index 0000000..6b01966
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx20Papers.csv
@@ -0,0 +1,206 @@
+"Paper #","Group","Paper Name","Meeting","Status","First released version","Labels"
+"`P0463R1 <https://wg21.link/P0463R1>`__","LWG","Endian just Endian","Toronto","|Complete|","7.0"
+"`P0674R1 <https://wg21.link/P0674R1>`__","LWG","Extending make_shared to Support Arrays","Toronto","|Complete|","15.0"
+"","","","","","",""
+"`P0020R6 <https://wg21.link/P0020R6>`__","LWG","Floating Point Atomic","Albuquerque","",""
+"`P0053R7 <https://wg21.link/P0053R7>`__","LWG","C++ Synchronized Buffered Ostream","Albuquerque","",""
+"`P0202R3 <https://wg21.link/P0202R3>`__","LWG","Add constexpr modifiers to functions in <algorithm> and <utility> Headers","Albuquerque","|Complete|","12.0"
+"`P0415R1 <https://wg21.link/P0415R1>`__","LWG","Constexpr for ``std::complex``\ ","Albuquerque","|Complete|","16.0"
+"`P0439R0 <https://wg21.link/P0439R0>`__","LWG","Make ``std::memory_order``\  a scoped enumeration","Albuquerque","|Complete|",""
+"`P0457R2 <https://wg21.link/P0457R2>`__","LWG","String Prefix and Suffix Checking","Albuquerque","|Complete|","6.0"
+"`P0550R2 <https://wg21.link/P0550R2>`__","LWG","Transformation Trait ``remove_cvref``\ ","Albuquerque","|Complete|","6.0"
+"`P0600R1 <https://wg21.link/P0600R1>`__","LWG","nodiscard in the Library","Albuquerque","|Complete|","16.0"
+"`P0616R0 <https://wg21.link/P0616R0>`__","LWG","de-pessimize legacy <numeric> algorithms with std::move","Albuquerque","|Complete|","12.0"
+"`P0653R2 <https://wg21.link/P0653R2>`__","LWG","Utility to convert a pointer to a raw pointer","Albuquerque","|Complete|","6.0"
+"`P0718R2 <https://wg21.link/P0718R2>`__","LWG","Atomic shared_ptr","Albuquerque","",""
+"`P0767R1 <https://wg21.link/P0767R1>`__","CWG","Deprecate POD","Albuquerque","|Complete|","7.0"
+"`P0768R1 <https://wg21.link/P0768R1>`__","CWG","Library Support for the Spaceship (Comparison) Operator","Albuquerque","|Complete|",""
+"`P0777R1 <https://wg21.link/P0777R1>`__","LWG","Treating Unnecessary ``decay``\ ","Albuquerque","|Complete|","7.0"
+"`P0122R7 <https://wg21.link/P0122R7>`__","LWG","<span>","Jacksonville","|Complete|","7.0"
+"`P0355R7 <https://wg21.link/P0355R7>`__","LWG","Extending chrono to Calendars and Time Zones","Jacksonville","|In Progress|",""
+"`P0551R3 <https://wg21.link/P0551R3>`__","LWG","Thou Shalt Not Specialize ``std``\  Function Templates!","Jacksonville","|Complete|","11.0"
+"`P0753R2 <https://wg21.link/P0753R2>`__","LWG","Manipulators for C++ Synchronized Buffered Ostream","Jacksonville","",""
+"`P0754R2 <https://wg21.link/P0754R2>`__","LWG","<version>","Jacksonville","|Complete|","7.0"
+"`P0809R0 <https://wg21.link/P0809R0>`__","LWG","Comparing Unordered Containers","Jacksonville","|Nothing To Do|",""
+"`P0858R0 <https://wg21.link/P0858R0>`__","LWG","Constexpr iterator requirements","Jacksonville","|Complete|","12.0"
+"`P0905R1 <https://wg21.link/P0905R1>`__","CWG","Symmetry for spaceship","Jacksonville","",""
+"`P0966R1 <https://wg21.link/P0966R1>`__","LWG","``string::reserve``\  Should Not Shrink","Jacksonville","|Complete| [#note-P0966]_","12.0"
+"","","","","","",""
+"`P0019R8 <https://wg21.link/P0019R8>`__","LWG","Atomic Ref","Rapperswil","",""
+"`P0458R2 <https://wg21.link/P0458R2>`__","LWG","Checking for Existence of an Element in Associative Containers","Rapperswil","|Complete|","13.0"
+"`P0475R1 <https://wg21.link/P0475R1>`__","LWG","LWG 2511: guaranteed copy elision for piecewise construction","Rapperswil","|Complete|",""
+"`P0476R2 <https://wg21.link/P0476R2>`__","LWG","Bit-casting object representations","Rapperswil","|Complete|","14.0"
+"`P0528R3 <https://wg21.link/P0528R3>`__","CWG","The Curious Case of Padding Bits, Featuring Atomic Compare-and-Exchange","Rapperswil","",""
+"`P0542R5 <https://wg21.link/P0542R5>`__","CWG","Support for contract based programming in C++","Rapperswil","*Removed in Cologne*","n/a"
+"`P0556R3 <https://wg21.link/P0556R3>`__","LWG","Integral power-of-2 operations","Rapperswil","|Complete|","9.0"
+"`P0619R4 <https://wg21.link/P0619R4>`__","LWG","Reviewing Deprecated Facilities of C++17 for C++20","Rapperswil","|Partial| [#note-P0619]_",""
+"`P0646R1 <https://wg21.link/P0646R1>`__","LWG","Improving the Return Value of Erase-Like Algorithms","Rapperswil","|Complete|","10.0"
+"`P0722R3 <https://wg21.link/P0722R3>`__","CWG","Efficient sized delete for variable sized classes","Rapperswil","|Complete|","9.0"
+"`P0758R1 <https://wg21.link/P0758R1>`__","LWG","Implicit conversion traits and utility functions","Rapperswil","|Complete|",""
+"`P0759R1 <https://wg21.link/P0759R1>`__","LWG","fpos Requirements","Rapperswil","|Complete|","11.0"
+"`P0769R2 <https://wg21.link/P0769R2>`__","LWG","Add shift to <algorithm>","Rapperswil","|Complete|","12.0"
+"`P0788R3 <https://wg21.link/P0788R3>`__","LWG","Standard Library Specification in a Concepts and Contracts World","Rapperswil","*Removed in Cologne*","n/a"
+"`P0879R0 <https://wg21.link/P0879R0>`__","LWG","Constexpr for swap and swap related functions Also resolves LWG issue 2800.","Rapperswil","|Complete|","13.0"
+"`P0887R1 <https://wg21.link/P0887R1>`__","LWG","The identity metafunction","Rapperswil","|Complete|","8.0"
+"`P0892R2 <https://wg21.link/P0892R2>`__","CWG","explicit(bool)","Rapperswil","",""
+"`P0898R3 <https://wg21.link/P0898R3>`__","LWG","Standard Library Concepts","Rapperswil","|Complete|","13.0"
+"`P0935R0 <https://wg21.link/P0935R0>`__","LWG","Eradicating unnecessarily explicit default constructors from the standard library","Rapperswil","|Complete|","12.0"
+"`P0941R2 <https://wg21.link/P0941R2>`__","CWG","Integrating feature-test macros into the C++ WD","Rapperswil","|In Progress|",""
+"`P1023R0 <https://wg21.link/P1023R0>`__","LWG","constexpr comparison operators for std::array","Rapperswil","|Complete|","8.0"
+"`P1025R1 <https://wg21.link/P1025R1>`__","CWG","Update The Reference To The Unicode Standard","Rapperswil","",""
+"`P1120R0 <https://wg21.link/P1120R0>`__","CWG","Consistency improvements for <=> and other comparison operators","Rapperswil","",""
+"","","","","","",""
+"`P0318R1 <https://wg21.link/P0318R1>`__","LWG","unwrap_ref_decay and unwrap_reference","San Diego","|Complete|","8.0"
+"`P0356R5 <https://wg21.link/P0356R5>`__","LWG","Simplified partial function application","San Diego","|Complete|","13.0"
+"`P0357R3 <https://wg21.link/P0357R3>`__","LWG","reference_wrapper for incomplete types","San Diego","|Complete|","8.0"
+"`P0482R6 <https://wg21.link/P0482R6>`__","CWG","char8_t: A type for UTF-8 characters and strings","San Diego","|Complete|","16.0"
+"`P0487R1 <https://wg21.link/P0487R1>`__","LWG","Fixing ``operator>>(basic_istream&, CharT*)``\  (LWG 2499)","San Diego","|Complete|","8.0"
+"`P0591R4 <https://wg21.link/P0591R4>`__","LWG","Utility functions to implement uses-allocator construction","San Diego","|Partial| [#note-P0591]_",""
+"`P0595R2 <https://wg21.link/P0595R2>`__","CWG","std::is_constant_evaluated()","San Diego","|Complete|","9.0"
+"`P0602R4 <https://wg21.link/P0602R4>`__","LWG","variant and optional should propagate copy/move triviality","San Diego","|Complete|","8.0"
+"`P0608R3 <https://wg21.link/P0608R3>`__","LWG","A sane variant converting constructor","San Diego","|Complete|","9.0"
+"`P0655R1 <https://wg21.link/P0655R1>`__","LWG","visit<R>: Explicit Return Type for visit","San Diego","|Complete|","12.0"
+"`P0771R1 <https://wg21.link/P0771R1>`__","LWG","std::function move constructor should be noexcept","San Diego","|Complete|","6.0"
+"`P0896R4 <https://wg21.link/P0896R4>`__","LWG","The One Ranges Proposal","San Diego","|Complete|","15.0","|ranges|"
+"`P0899R1 <https://wg21.link/P0899R1>`__","LWG","P0899R1 - LWG 3016 is not a defect","San Diego","|Nothing To Do|",""
+"`P0919R3 <https://wg21.link/P0919R3>`__","LWG","Heterogeneous lookup for unordered containers","San Diego","|Complete|","12.0"
+"`P0972R0 <https://wg21.link/P0972R0>`__","LWG","<chrono> ``zero()``\ , ``min()``\ , and ``max()``\  should be noexcept","San Diego","|Complete|","8.0"
+"`P1006R1 <https://wg21.link/P1006R1>`__","LWG","Constexpr in std::pointer_traits","San Diego","|Complete|","8.0"
+"`P1007R3 <https://wg21.link/P1007R3>`__","LWG","``std::assume_aligned``\ ","San Diego","|Complete|","15.0"
+"`P1020R1 <https://wg21.link/P1020R1>`__","LWG","Smart pointer creation with default initialization","San Diego","|Complete|","16.0"
+"`P1032R1 <https://wg21.link/P1032R1>`__","LWG","Misc constexpr bits","San Diego","|Complete|","13.0"
+"`P1085R2 <https://wg21.link/P1085R2>`__","LWG","Should Span be Regular?","San Diego","|Complete|","8.0"
+"`P1123R0 <https://wg21.link/P1123R0>`__","LWG","Editorial Guidance for merging P0019r8 and P0528r3","San Diego","* *",""
+"`P1148R0 <https://wg21.link/P1148R0>`__","LWG","Cleaning up Clause 20","San Diego","* *",""
+"`P1165R1 <https://wg21.link/P1165R1>`__","LWG","Make stateful allocator propagation more consistent for ``operator+(basic_string)``\ ","San Diego","|Complete|","15.0"
+"`P1209R0 <https://wg21.link/P1209R0>`__","LWG","Adopt Consistent Container Erasure from Library Fundamentals 2 for C++20","San Diego","|Complete|","8.0"
+"`P1210R0 <https://wg21.link/P1210R0>`__","LWG","Completing the Rebase of Library Fundamentals, Version 3, Working Draft","San Diego","* *",""
+"`P1236R1 <https://wg21.link/P1236R1>`__","CWG","Alternative Wording for P0907R4 Signed Integers are Two's Complement","San Diego","* *",""
+"`P1248R1 <https://wg21.link/P1248R1>`__","LWG","Remove CommonReference requirement from StrictWeakOrdering (a.k.a Fixing Relations)","San Diego","|Complete|","13.0"
+"`P1285R0 <https://wg21.link/P1285R0>`__","LWG","Improving Completeness Requirements for Type Traits","San Diego","* *",""
+"`P1353R0 <https://wg21.link/P1353R0>`__","CWG","Missing feature test macros","San Diego","* *",""
+"","","","","","",""
+"`P0339R6 <https://wg21.link/P0339R6>`__","LWG","polymorphic_allocator<> as a vocabulary type","Kona","|Complete|","16.0"
+"`P0340R3 <https://wg21.link/P0340R3>`__","LWG","Making std::underlying_type SFINAE-friendly","Kona","|Complete|","9.0"
+"`P0738R2 <https://wg21.link/P0738R2>`__","LWG","I Stream, You Stream, We All Stream for istream_iterator","Kona","",""
+"`P0811R3 <https://wg21.link/P0811R3>`__","LWG","Well-behaved interpolation for numbers and pointers","Kona","|Complete|","9.0"
+"`P0920R2 <https://wg21.link/P0920R2>`__","LWG","Precalculated hash values in lookup","Kona","Reverted by `P1661 <https://wg21.link/P1661>`__",""
+"`P1001R2 <https://wg21.link/P1001R2>`__","LWG","Target Vectorization Policies from Parallelism V2 TS to C++20","Kona","",""
+"`P1024R3 <https://wg21.link/P1024R3>`__","LWG","Usability Enhancements for std::span","Kona","|Complete|","9.0"
+"`P1164R1 <https://wg21.link/P1164R1>`__","LWG","Make create_directory() Intuitive","Kona","|Complete|","12.0"
+"`P1227R2 <https://wg21.link/P1227R2>`__","LWG","Signed ssize() functions, unsigned size() functions","Kona","|Complete|","9.0"
+"`P1252R2 <https://wg21.link/P1252R2>`__","LWG","Ranges Design Cleanup","Kona","|Complete|","15.0","|ranges|"
+"`P1286R2 <https://wg21.link/P1286R2>`__","CWG","Contra CWG DR1778","Kona","",""
+"`P1357R1 <https://wg21.link/P1357R1>`__","LWG","Traits for [Un]bounded Arrays","Kona","|Complete|","9.0"
+"`P1458R1 <https://wg21.link/P1458R1>`__","LWG","Mandating the Standard Library: Clause 16 - Language support library","Kona","|Complete|","9.0"
+"`P1459R1 <https://wg21.link/P1459R1>`__","LWG","Mandating the Standard Library: Clause 18 - Diagnostics library","Kona","|Complete|","9.0"
+"`P1462R1 <https://wg21.link/P1462R1>`__","LWG","Mandating the Standard Library: Clause 20 - Strings library","Kona","|Complete|","9.0"
+"`P1463R1 <https://wg21.link/P1463R1>`__","LWG","Mandating the Standard Library: Clause 21 - Containers library","Kona","",""
+"`P1464R1 <https://wg21.link/P1464R1>`__","LWG","Mandating the Standard Library: Clause 22 - Iterators library","Kona","|Complete|","9.0"
+"","","","","","",""
+"`P0325R4 <https://wg21.link/P0325R4>`__","LWG","to_array from LFTS with updates","Cologne","|Complete|","10.0"
+"`P0408R7 <https://wg21.link/P0408R7>`__","LWG","Efficient Access to basic_stringbuf's Buffer","Cologne","",""
+"`P0466R5 <https://wg21.link/P0466R5>`__","LWG","Layout-compatibility and Pointer-interconvertibility Traits","Cologne","",""
+"`P0553R4 <https://wg21.link/P0553R4>`__","LWG","Bit operations","Cologne","|Complete|","9.0"
+"`P0631R8 <https://wg21.link/P0631R8>`__","LWG","Math Constants","Cologne","|Complete|","11.0"
+"`P0645R10 <https://wg21.link/P0645R10>`__","LWG","Text Formatting","Cologne","|Complete| [#note-P0645]_","14.0"
+"`P0660R10 <https://wg21.link/P0660R10>`__","LWG","Stop Token and Joining Thread, Rev 10","Cologne","",""
+"`P0784R7 <https://wg21.link/P0784R7>`__","CWG","More constexpr containers","Cologne","|Complete|","12.0"
+"`P0980R1 <https://wg21.link/P0980R1>`__","LWG","Making std::string constexpr","Cologne","|Complete|","15.0"
+"`P1004R2 <https://wg21.link/P1004R2>`__","LWG","Making std::vector constexpr","Cologne","|Complete|","15.0"
+"`P1035R7 <https://wg21.link/P1035R7>`__","LWG","Input Range Adaptors","Cologne","|Complete|","16.0","|ranges|"
+"`P1065R2 <https://wg21.link/P1065R2>`__","LWG","Constexpr INVOKE","Cologne","|Complete|","12.0"
+"`P1135R6 <https://wg21.link/P1135R6>`__","LWG","The C++20 Synchronization Library","Cologne","|Complete|","11.0"
+"`P1207R4 <https://wg21.link/P1207R4>`__","LWG","Movability of Single-pass Iterators","Cologne","|Complete|","15.0","|ranges|"
+"`P1208R6 <https://wg21.link/P1208R6>`__","LWG","Adopt source_location for C++20","Cologne","|Complete|","16.0"
+"`P1355R2 <https://wg21.link/P1355R2>`__","LWG","Exposing a narrow contract for ceil2","Cologne","|Complete|","9.0"
+"`P1361R2 <https://wg21.link/P1361R2>`__","LWG","Integration of chrono with text formatting","Cologne","|Partial|",""
+"`P1423R3 <https://wg21.link/P1423R3>`__","LWG","char8_t backward compatibility remediation","Cologne","|Complete|","15.0"
+"`P1424R1 <https://wg21.link/P1424R1>`__","LWG","'constexpr' feature macro concerns","Cologne","Superseded by `P1902 <https://wg21.link/P1902>`__",""
+"`P1466R3 <https://wg21.link/P1466R3>`__","LWG","Miscellaneous minor fixes for chrono","Cologne","",""
+"`P1474R1 <https://wg21.link/P1474R1>`__","LWG","Helpful pointers for ContiguousIterator","Cologne","|Complete|","15.0","|ranges|"
+"`P1502R1 <https://wg21.link/P1502R1>`__","LWG","Standard library header units for C++20","Cologne","",""
+"`P1522R1 <https://wg21.link/P1522R1>`__","LWG","Iterator Difference Type and Integer Overflow","Cologne","|Complete|","15.0","|ranges|"
+"`P1523R1 <https://wg21.link/P1523R1>`__","LWG","Views and Size Types","Cologne","|Complete|","15.0","|ranges|"
+"`P1612R1 <https://wg21.link/P1612R1>`__","LWG","Relocate Endian's Specification","Cologne","|Complete|","10.0"
+"`P1614R2 <https://wg21.link/P1614R2>`__","LWG","The Mothership has Landed","Cologne","|In Progress|",""
+"`P1638R1 <https://wg21.link/P1638R1>`__","LWG","basic_istream_view::iterator should not be copyable","Cologne","|Complete|","16.0","|ranges|"
+"`P1643R1 <https://wg21.link/P1643R1>`__","LWG","Add wait/notify to atomic_ref","Cologne","",""
+"`P1644R0 <https://wg21.link/P1644R0>`__","LWG","Add wait/notify to atomic<shared_ptr>","Cologne","",""
+"`P1650R0 <https://wg21.link/P1650R0>`__","LWG","Output std::chrono::days with 'd' suffix","Cologne","|Complete|","16.0"
+"`P1651R0 <https://wg21.link/P1651R0>`__","LWG","bind_front should not unwrap reference_wrapper","Cologne","|Complete|","13.0"
+"`P1652R1 <https://wg21.link/P1652R1>`__","LWG","Printf corner cases in std::format","Cologne","|Complete|","14.0"
+"`P1661R1 <https://wg21.link/P1661R1>`__","LWG","Remove dedicated precalculated hash lookup interface","Cologne","|Nothing To Do|",""
+"`P1754R1 <https://wg21.link/P1754R1>`__","LWG","Rename concepts to standard_case for C++20, while we still can","Cologne","|Complete|","15.0","|ranges|"
+"","","","","",""
+"`P0883R2 <https://wg21.link/P0883R2>`__","LWG","Fixing Atomic Initialization","Belfast","|Complete| [#note-P0883.1]_ [#note-P0883.2]_","14.0"
+"`P1391R4 <https://wg21.link/P1391R4>`__","LWG","Range constructor for std::string_view","Belfast","|Complete|","14.0","|ranges|"
+"`P1394R4 <https://wg21.link/P1394R4>`__","LWG","Range constructor for std::span","Belfast","|Complete|","14.0","|ranges|"
+"`P1456R1 <https://wg21.link/P1456R1>`__","LWG","Move-only views","Belfast","|Complete|","15.0","|ranges|"
+"`P1622R3 <https://wg21.link/P1622R3>`__","LWG","Mandating the Standard Library: Clause 32 - Thread support library","Belfast","* *",""
+"`P1645R1 <https://wg21.link/P1645R1>`__","LWG","constexpr for numeric algorithms","Belfast","|Complete|","12.0"
+"`P1686R2 <https://wg21.link/P1686R2>`__","LWG","Mandating the Standard Library: Clause 27 - Time library","Belfast","* *",""
+"`P1690R1 <https://wg21.link/P1690R1>`__","LWG","Refinement Proposal for P0919 Heterogeneous lookup for unordered containers","Belfast","|Complete|","12.0"
+"`P1716R3 <https://wg21.link/P1716R3>`__","LWG","ranges compare algorithm are over-constrained","Belfast","|Complete|","15.0","|ranges|"
+"`P1718R2 <https://wg21.link/P1718R2>`__","LWG","Mandating the Standard Library: Clause 25 - Algorithms library","Belfast","* *",""
+"`P1719R2 <https://wg21.link/P1719R2>`__","LWG","Mandating the Standard Library: Clause 26 - Numerics library","Belfast","* *",""
+"`P1720R2 <https://wg21.link/P1720R2>`__","LWG","Mandating the Standard Library: Clause 28 - Localization library","Belfast","* *",""
+"`P1721R2 <https://wg21.link/P1721R2>`__","LWG","Mandating the Standard Library: Clause 29 - Input/Output library","Belfast","* *",""
+"`P1722R2 <https://wg21.link/P1722R2>`__","LWG","Mandating the Standard Library: Clause 30 - Regular Expression library","Belfast","* *",""
+"`P1723R2 <https://wg21.link/P1723R2>`__","LWG","Mandating the Standard Library: Clause 31 - Atomics library","Belfast","* *",""
+"`P1855R0 <https://wg21.link/P1855R0>`__","LWG","Make ``<compare>``\  freestanding","Belfast","* *",""
+"`P1862R1 <https://wg21.link/P1862R1>`__","LWG","Ranges adaptors for non-copyable iterators","Belfast","|Complete|","16.0","|ranges|"
+"`P1865R1 <https://wg21.link/P1865R1>`__","LWG","Add max() to latch and barrier","Belfast","|Complete|","11.0"
+"`P1869R1 <https://wg21.link/P1869R1>`__","LWG","Rename 'condition_variable_any' interruptible wait methods","Belfast","* *",""
+"`P1870R1 <https://wg21.link/P1870R1>`__","LWG","forwarding-range is too subtle","Belfast","|Complete|","15.0","|ranges|"
+"`P1871R1 <https://wg21.link/P1871R1>`__","LWG","Concept traits should be named after concepts","Belfast","|Complete|","14.0","|ranges|"
+"`P1872R0 <https://wg21.link/P1872R0>`__","LWG","span should have size_type, not index_type","Belfast","|Complete|","10.0"
+"`P1878R1 <https://wg21.link/P1878R1>`__","LWG","Constraining Readable Types","Belfast","|Complete|","15.0","|ranges|"
+"`P1892R1 <https://wg21.link/P1892R1>`__","LWG","Extended locale-specific presentation specifiers for std::format","Belfast","|Complete|","14.0"
+"`P1902R1 <https://wg21.link/P1902R1>`__","LWG","Missing feature-test macros 2018-2019","Belfast","* *",""
+"`P1959R0 <https://wg21.link/P1959R0>`__","LWG","Remove std::weak_equality and std::strong_equality","Belfast","|Nothing To Do|",""
+"`P1960R0 <https://wg21.link/P1960R0>`__","LWG","NB Comment Changes Reviewed by SG1","Belfast","* *",""
+"`P1961R0 <https://wg21.link/P1961R0>`__","LWG","Harmonizing the definitions of total order for pointers","Belfast","* *",""
+"`P1965R0 <https://wg21.link/P1965R0>`__","LWG","Blanket Wording for Specifying ""Hidden Friends""","Belfast","* *",""
+"","","","","","",""
+"`P0586R2 <https://wg21.link/P0586R2>`__","LWG","Safe integral comparisons","Prague","|Complete|","13.0"
+"`P0593R6 <https://wg21.link/P0593R6>`__","CWG","Implicit creation of objects for low-level object manipulation","Prague","* *",""
+"`P1115R3 <https://wg21.link/P1115R3>`__","LWG","Improving the Return Value of Erase-Like Algorithms II: Free erase/erase if","Prague","|Complete|","11.0"
+"`P1243R4 <https://wg21.link/P1243R4>`__","LWG","Rangify New Algorithms","Prague","|Complete|","15.0","|ranges|"
+"`P1460R1 <https://wg21.link/P1460R1>`__","LWG","Mandating the Standard Library: Clause 20 - Utilities library","Prague","* *",""
+"`P1739R4 <https://wg21.link/P1739R4>`__","LWG","Avoid template bloat for safe_ranges in combination with ""subrange-y"" view adaptors","Prague","|Complete|","15.0","|ranges|"
+"`P1831R1 <https://wg21.link/P1831R1>`__","LWG","Deprecating volatile: library","Prague","* *",""
+"`P1868R2 <https://wg21.link/P1868R2>`__","LWG","width: clarifying units of width and precision in std::format","Prague","|Complete|","14.0"
+"`P1937R2 <https://wg21.link/P1937R2>`__","CWG","Fixing inconsistencies between constexpr and consteval functions","Prague","* *",""
+"`P1956R1 <https://wg21.link/P1956R1>`__","LWG","On the names of low-level bit manipulation functions","Prague","|Complete|","12.0"
+"`P1957R2 <https://wg21.link/P1957R2>`__","CWG","Converting from ``T*``\  to bool should be considered narrowing (re: US 212)","Prague","* *",""
+"`P1963R0 <https://wg21.link/P1963R0>`__","LWG","Fixing US 313","Prague","* *","",""
+"`P1964R2 <https://wg21.link/P1964R2>`__","LWG","Wording for boolean-testable","Prague","|Complete|","13.0"
+"`P1970R2 <https://wg21.link/P1970R2>`__","LWG","Consistency for size() functions: Add ranges::ssize","Prague","|Complete|","15.0","|ranges|"
+"`P1973R1 <https://wg21.link/P1973R1>`__","LWG","Rename ""_default_init"" Functions, Rev1","Prague","|Complete|","16.0"
+"`P1976R2 <https://wg21.link/P1976R2>`__","LWG","Fixed-size span construction from dynamic range","Prague","|Complete|","11.0","|ranges|"
+"`P1981R0 <https://wg21.link/P1981R0>`__","LWG","Rename leap to leap_second","Prague","* *",""
+"`P1982R0 <https://wg21.link/P1982R0>`__","LWG","Rename link to time_zone_link","Prague","* *",""
+"`P1983R0 <https://wg21.link/P1983R0>`__","LWG","Wording for GB301, US296, US292, US291, and US283","Prague","|Complete|","15.0","|ranges|"
+"`P1994R1 <https://wg21.link/P1994R1>`__","LWG","elements_view needs its own sentinel","Prague","|Complete|","16.0","|ranges|"
+"`P2002R1 <https://wg21.link/P2002R1>`__","CWG","Defaulted comparison specification cleanups","Prague","* *",""
+"`P2045R1 <https://wg21.link/P2045R1>`__","LWG","Missing Mandates for the standard library","Prague","* *",""
+"`P2085R0 <https://wg21.link/P2085R0>`__","CWG","Consistent defaulted comparisons","Prague","* *",""
+"`P2091R0 <https://wg21.link/P2091R0>`__","LWG","Issues with range access CPOs","Prague","|Complete|","15.0","|ranges|"
+"`P2101R0 <https://wg21.link/P2101R0>`__","LWG","'Models' subsumes 'satisfies' (Wording for US298 and US300)","Prague","* *",""
+"`P2102R0 <https://wg21.link/P2102R0>`__","LWG","Make 'implicit expression variations' more explicit (Wording for US185)","Prague","* *",""
+"`P2106R0 <https://wg21.link/P2106R0>`__","LWG","Alternative wording for GB315 and GB316","Prague","|Complete|","15.0","|ranges|"
+"`P2116R0 <https://wg21.link/P2116R0>`__","LWG","Remove tuple-like protocol support from fixed-extent span","Prague","|Complete|","11.0"
+"","","","","","",""
+"`P2231R1 <https://wg21.link/P2231R1>`__","LWG","Missing constexpr in std::optional and std::variant","June 2021","|Partial| [#note-P2231]_","13.0"
+"`P2325R3 <https://wg21.link/P2325R3>`__","LWG","Views should not be required to be default constructible","June 2021","|Complete|","16.0","|ranges|"
+"`P2210R2 <https://wg21.link/P2210R2>`__","LWG","Superior String Splitting","June 2021","|Complete|","16.0","|ranges|"
+"`P2216R3 <https://wg21.link/P2216R3>`__","LWG","std::format improvements","June 2021","|Complete|","15.0"
+"`P2281R1 <https://wg21.link/P2281R1>`__","LWG","Clarifying range adaptor objects","June 2021","|Complete|","14.0","|ranges|"
+"`P2328R1 <https://wg21.link/P2328R1>`__","LWG","join_view should join all views of ranges","June 2021","|Complete|","15.0","|ranges|"
+"`P2367R0 <https://wg21.link/P2367R0>`__","LWG","Remove misuses of list-initialization from Clause 24","June 2021","|Complete|","15.0","|ranges|"
+"","","","","","",""
+"`P2372R3 <https://wg21.link/P2372R3>`__","LWG","Fixing locale handling in chrono formatters","October 2021","|In Progress|",""
+"`P2415R2 <https://wg21.link/P2415R2>`__","LWG","What is a ``view``","October 2021","|Complete|","14.0","|ranges|"
+"`P2418R2 <https://wg21.link/P2418R2>`__","LWG","Add support for ``std::generator``-like types to ``std::format``","October 2021","|Complete|","15.0"
+"`P2432R1 <https://wg21.link/P2432R1>`__","LWG","Fix ``istream_view``","October 2021","|Complete|","16.0","|ranges|"
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx2b.rst b/app/src/main/cpp/libcxx/docs/Status/Cxx2b.rst
new file mode 100644
index 0000000..e79ed28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx2b.rst
@@ -0,0 +1,54 @@
+.. _cxx2b-status:
+
+================================
+libc++ C++2b Status
+================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+================================
+
+In November 2020, the C++ standard committee adopted the first changes to the next version of the C++ standard, known here as "C++2b" (probably to be C++23).
+
+This page shows the status of libc++; the status of clang's support of the language features is `here <https://clang.llvm.org/cxx_status.html#cxx23>`__.
+
+.. attention:: Features in unreleased drafts of the standard are subject to change.
+
+The groups that have contributed papers:
+
+-  CWG - Core Language Working group
+-  LWG - Library working group
+-  SG1 - Study group #1 (Concurrency working group)
+
+.. note:: "Nothing to do" means that no library changes were needed to implement this change.
+
+.. _paper-status-cxx2b:
+
+Paper Status
+====================================
+
+.. csv-table::
+   :file: Cxx2bPapers.csv
+   :header-rows: 1
+   :widths: auto
+
+.. note::
+
+   .. [#note-P0533R9] P0533R9: ``isfinite``, ``isinf``, ``isnan`` and ``isnormal`` are implemented.
+   .. [#note-P1413R3] P1413R3: ``std::aligned_storage_t`` and ``std::aligned_union_t`` are marked deprecated, but
+      clang doesn't issue a diagnostic for deprecated using template declarations.
+
+.. _issues-status-cxx2b:
+
+Library Working Group Issues Status
+====================================
+
+.. csv-table::
+   :file: Cxx2bIssues.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx2bIssues.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx2bIssues.csv
new file mode 100644
index 0000000..b2cc710
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx2bIssues.csv
@@ -0,0 +1,250 @@
+"Issue #","Issue Name","Meeting","Status","First released version","Labels"
+"`2839 <https://wg21.link/LWG2839>`__","Self-move-assignment of library types, again","November 2020","|Nothing To Do|",""
+"`3117 <https://wg21.link/LWG3117>`__","Missing ``packaged_task`` deduction guides","November 2020","|Complete|","16.0"
+"`3143 <https://wg21.link/LWG3143>`__","``monotonic_buffer_resource`` growth policy is unclear","November 2020","",""
+"`3195 <https://wg21.link/LWG3195>`__","What is the stored pointer value of an empty ``weak_ptr``?","November 2020","|Nothing To Do|",""
+"`3211 <https://wg21.link/LWG3211>`__","``std::tuple<>`` should be trivially constructible","November 2020","|Complete|","9.0"
+"`3236 <https://wg21.link/LWG3236>`__","Random access iterator requirements lack limiting relational operators domain to comparing those from the same range","November 2020","|Nothing To Do|",""
+"`3265 <https://wg21.link/LWG3265>`__","``move_iterator``'s conversions are more broken after P1207","November 2020","Fixed by `LWG3435 <https://wg21.link/LWG3435>`__",""
+"`3435 <https://wg21.link/LWG3435>`__","``three_way_comparable_with<reverse_iterator<int*>, reverse_iterator<const int*>>``","November 2020","|Complete|","13.0"
+"`3432 <https://wg21.link/LWG3432>`__","Missing requirement for ``comparison_category``","November 2020","|Complete|","16.0","|spaceship|"
+"`3447 <https://wg21.link/LWG3447>`__","Deduction guides for ``take_view`` and ``drop_view`` have different constraints","November 2020","|Complete|","14.0","|ranges|"
+"`3450 <https://wg21.link/LWG3450>`__","The const overloads of ``take_while_view::begin/end`` are underconstrained","November 2020","|Complete|","16.0","|ranges|"
+"`3464 <https://wg21.link/LWG3464>`__","``istream::gcount()`` can overflow","November 2020","",""
+"`2731 <https://wg21.link/LWG2731>`__","Existence of ``lock_guard<MutexTypes...>::mutex_type`` typedef unclear","November 2020","|Complete|","5.0"
+"`2743 <https://wg21.link/LWG2743>`__","P0083R3 ``node_handle`` private members missing ""exposition only"" comment","November 2020","|Nothing To Do|",""
+"`2820 <https://wg21.link/LWG2820>`__","Clarify ``<cstdint>`` macros","November 2020","|Nothing To Do|",""
+"`3120 <https://wg21.link/LWG3120>`__","Unclear behavior of ``monotonic_buffer_resource::release()``","November 2020","",""
+"`3170 <https://wg21.link/LWG3170>`__","``is_always_equal`` added to ``std::allocator`` makes the standard library treat derived types as always equal","November 2020","",""
+"`3036 <https://wg21.link/LWG3036>`__","``polymorphic_allocator::destroy`` is extraneous","November 2020","",""
+"`3171 <https://wg21.link/LWG3171>`__","LWG2989 breaks ``directory_entry`` stream insertion","November 2020","|Complete|","14.0"
+"`3306 <https://wg21.link/LWG3306>`__","``ranges::advance`` violates its preconditions","November 2020","|Complete|","14.0","|ranges|"
+"`3403 <https://wg21.link/LWG3403>`__","Domain of ``ranges::ssize(E)`` doesn't ``match ranges::size(E)``","November 2020","","","|ranges|"
+"`3404 <https://wg21.link/LWG3404>`__","Finish removing subrange's conversions from pair-like","November 2020","","","|ranges|"
+"`3405 <https://wg21.link/LWG3405>`__","``common_view``'s converting constructor is bad, too","November 2020","|Complete|","14.0","|ranges|"
+"`3406 <https://wg21.link/LWG3406>`__","``elements_view::begin()`` and ``elements_view::end()`` have incompatible constraints","November 2020","|Complete|","16.0","|ranges|"
+"`3419 <https://wg21.link/LWG3419>`__","[algorithms.requirements]/15 doesn't reserve as many rights as it intends to","November 2020","|Nothing To Do|",""
+"`3420 <https://wg21.link/LWG3420>`__","cpp17-iterator should check that the type looks like an iterator first","November 2020","|Complete|","14.0","|ranges|"
+"`3421 <https://wg21.link/LWG3421>`__","Imperfect ADL emulation for boolean-testable","November 2020","|Nothing To Do|","","|ranges|"
+"`3425 <https://wg21.link/LWG3425>`__","``condition_variable_any`` fails to constrain its Lock parameters","November 2020","|Nothing To Do|",""
+"`3426 <https://wg21.link/LWG3426>`__","``operator<=>(const unique_ptr<T, D>&, nullptr_t)`` can't get no satisfaction","November 2020","|Complete|","16.0","|spaceship|"
+"`3427 <https://wg21.link/LWG3427>`__","``operator<=>(const shared_ptr<T>&, nullptr_t)`` definition ill-formed","November 2020","|Complete|","16.0","|spaceship|"
+"`3428 <https://wg21.link/LWG3428>`__","``single_view``'s in place constructor should be explicit","November 2020","|Complete|","14.0","|ranges|"
+"`3434 <https://wg21.link/LWG3434>`__","``ios_base`` never reclaims memory for iarray and parray","November 2020","|Nothing To Do|",""
+"`3437 <https://wg21.link/LWG3437>`__","``__cpp_lib_polymorphic_allocator`` is in the wrong header","November 2020","|Complete|","14.0"
+"`3446 <https://wg21.link/LWG3446>`__","``indirectly_readable_traits`` ambiguity for types with both ``value_type`` and ``element_type``","November 2020","|Complete|","14.0","|ranges|"
+"`3448 <https://wg21.link/LWG3448>`__","``transform_view``'s ``sentinel<false>`` not comparable with ``iterator<true>``","November 2020","","","|ranges|"
+"`3449 <https://wg21.link/LWG3449>`__","``take_view`` and ``take_while_view``'s ``sentinel<false>`` not comparable with their ``const iterator``","November 2020","|Complete|","16.0","|ranges|"
+"`3453 <https://wg21.link/LWG3453>`__","Generic code cannot call ``ranges::advance(i, s)``","November 2020","|Nothing To Do|","","|ranges|"
+"`3455 <https://wg21.link/LWG3455>`__","Incorrect Postconditions on ``unique_ptr`` move assignment","November 2020","|Nothing To Do|",""
+"`3460 <https://wg21.link/LWG3460>`__","Unimplementable ``noop_coroutine_handle`` guarantees","November 2020","|Complete|","14.0"
+"`3461 <https://wg21.link/LWG3461>`__","``convertible_to``'s description mishandles cv-qualified ``void``","November 2020","|Nothing To Do|",""
+"`3465 <https://wg21.link/LWG3465>`__","``compare_partial_order_fallback`` requires ``F < E``","November 2020","|Complete|","14.0","|spaceship|"
+"`3466 <https://wg21.link/LWG3466>`__","Specify the requirements for ``promise``/``future``/``shared_future`` consistently","November 2020","|Nothing To Do|",""
+"`3467 <https://wg21.link/LWG3467>`__","``bool`` can't be an integer-like type","November 2020","|Complete|","14.0","|ranges|"
+"`3472 <https://wg21.link/LWG3472>`__","``counted_iterator`` is missing preconditions","November 2020","|Complete|","14.0","|ranges|"
+"`3473 <https://wg21.link/LWG3473>`__","Normative encouragement in non-normative note","November 2020","|Complete|","15.0","|format|"
+"`3474 <https://wg21.link/LWG3474>`__","Nesting ``join_views`` is broken because of CTAD","November 2020","|Complete|","15.0","|ranges|"
+"`3476 <https://wg21.link/LWG3476>`__","``thread`` and ``jthread`` constructors require that the parameters be move-constructible but never move construct the parameters","November 2020","",""
+"`3477 <https://wg21.link/LWG3477>`__","Simplify constraints for ``semiregular-box``","November 2020","","","|ranges|"
+"`3482 <https://wg21.link/LWG3482>`__","``drop_view``'s const begin should additionally require ``sized_range``","November 2020","|Complete|","14.0","|ranges|"
+"`3483 <https://wg21.link/LWG3483>`__","``transform_view::iterator``'s difference is overconstrained","November 2020","|Complete|","14.0","|ranges|"
+"","","","","",""
+"`3391 <https://wg21.link/LWG3391>`__","Problems with ``counted_iterator``/``move_iterator::base() const &``","February 2021","","","|ranges|"
+"`3433 <https://wg21.link/LWG3433>`__","``subrange::advance(n)`` has UB when ``n < 0``","February 2021","|Complete|","14.0","|ranges|"
+"`3490 <https://wg21.link/LWG3490>`__","``ranges::drop_while_view::begin()`` is missing a precondition","February 2021","|Nothing To Do|","","|ranges|"
+"`3492 <https://wg21.link/LWG3492>`__","Minimal improvements to ``elements_view::iterator``","February 2021","|Complete|","16.0","|ranges|"
+"`3494 <https://wg21.link/LWG3494>`__","Allow ranges to be conditionally borrowed","February 2021","Superseded by `P2017R1 <https://wg21.link/P2017R1>`__","","|ranges|"
+"`3495 <https://wg21.link/LWG3495>`__","``constexpr launder`` makes pointers to inactive members of unions usable","February 2021","|Nothing To Do|",""
+"`3500 <https://wg21.link/LWG3500>`__","``join_view::iterator::operator->()`` is bogus","February 2021","|Complete|","14.0","|ranges|"
+"`3502 <https://wg21.link/LWG3502>`__","``elements_view`` should not be allowed to return dangling reference","February 2021","|Complete|","16.0","|ranges|"
+"`3505 <https://wg21.link/LWG3505>`__","``split_view::outer-iterator::operator++`` misspecified","February 2021","","","|ranges|"
+"","","","","",""
+`2774 <https://wg21.link/LWG2774>`__,"``std::function`` construction vs assignment","June 2021","",""
+`2818 <https://wg21.link/LWG2818>`__,"``::std::`` everywhere rule needs tweaking","June 2021","|Nothing To Do|",""
+`2997 <https://wg21.link/LWG2997>`__,"LWG 491 and the specification of ``{forward_,}list::unique``","June 2021","",""
+`3410 <https://wg21.link/LWG3410>`__,"``lexicographical_compare_three_way`` is overspecified","June 2021","","","|spaceship|"
+`3430 <https://wg21.link/LWG3430>`__,"``std::fstream`` & co. should be constructible from string_view","June 2021","",""
+`3462 <https://wg21.link/LWG3462>`__,"§[formatter.requirements]: Formatter requirements forbid use of ``fc.arg()``","June 2021","","","|format|"
+`3481 <https://wg21.link/LWG3481>`__,"``viewable_range`` mishandles lvalue move-only views","June 2021","Superseded by `P2415R2 <https://wg21.link/P2415R2>`__","","|ranges|"
+`3506 <https://wg21.link/LWG3506>`__,"Missing allocator-extended constructors for ``priority_queue``","June 2021","|Complete|","14.0"
+`3517 <https://wg21.link/LWG3517>`__,"``join_view::iterator``'s ``iter_swap`` is underconstrained","June 2021","|Complete|","14.0","|ranges|"
+`3518 <https://wg21.link/LWG3518>`__,"Exception requirements on char trait operations unclear","June 2021","|Nothing To Do|",""
+`3519 <https://wg21.link/LWG3519>`__,"Incomplete synopses for ``<random>`` classes","June 2021","",""
+`3520 <https://wg21.link/LWG3520>`__,"``iter_move`` and ``iter_swap`` are inconsistent for ``transform_view::iterator``","June 2021","|Complete|","14.0","|ranges|"
+`3521 <https://wg21.link/LWG3521>`__,"Overly strict requirements on ``qsort`` and ``bsearch``","June 2021","|Nothing To Do|",""
+`3522 <https://wg21.link/LWG3522>`__,"Missing requirement on ``InputIterator`` template parameter for ``priority_queue`` constructors","June 2021","|Complete|","14.0"
+`3523 <https://wg21.link/LWG3523>`__,"``iota_view::sentinel`` is not always ``iota_view``'s sentinel","June 2021","","","|ranges|"
+`3526 <https://wg21.link/LWG3526>`__,"Return types of ``uses_allocator_construction_args`` unspecified","June 2021","",""
+`3527 <https://wg21.link/LWG3527>`__,"``uses_allocator_construction_args`` handles rvalue pairs of rvalue references incorrectly","June 2021","",""
+`3528 <https://wg21.link/LWG3528>`__,"``make_from_tuple`` can perform (the equivalent of) a C-style cast","June 2021","",""
+`3529 <https://wg21.link/LWG3529>`__,"``priority_queue(first, last)`` should construct ``c`` with ``(first, last)``","June 2021","|Complete|","14.0"
+`3530 <https://wg21.link/LWG3530>`__,"``BUILTIN-PTR-MEOW`` should not opt the type out of syntactic checks","June 2021","",""
+`3532 <https://wg21.link/LWG3532>`__,"``split_view<V, P>::inner-iterator<true>::operator++(int)`` should depend on ``Base``","June 2021","","","|ranges|"
+`3533 <https://wg21.link/LWG3533>`__,"Make ``base() const &`` consistent across iterator wrappers that supports ``input_iterators``","June 2021","|Complete|","14.0","|ranges|"
+`3536 <https://wg21.link/LWG3536>`__,"Should ``chrono::from_stream()`` assign zero to duration for failure?","June 2021","","","|chrono|"
+`3539 <https://wg21.link/LWG3539>`__,"``format_to`` must not copy models of ``output_iterator<const charT&>``","June 2021","|Complete|","14.0","|format|"
+`3540 <https://wg21.link/LWG3540>`__,"§[format.arg] There should be no const in ``basic_format_arg(const T* p)``","June 2021","|Complete|","14.0","|format|"
+`3541 <https://wg21.link/LWG3541>`__,"``indirectly_readable_traits`` should be SFINAE-friendly for all types","June 2021","|Complete|","14.0","|ranges|"
+`3542 <https://wg21.link/LWG3542>`__,"``basic_format_arg`` mishandles ``basic_string_view`` with custom traits","June 2021","|Complete|","14.0","|format|"
+`3543 <https://wg21.link/LWG3543>`__,"Definition of when ``counted_iterators`` refer to the same sequence isn't quite right","June 2021","|Nothing To Do|","","|ranges|"
+`3544 <https://wg21.link/LWG3544>`__,"``format-arg-store::args`` is unintentionally not exposition-only","June 2021","|Complete|","14.0","|format|"
+`3546 <https://wg21.link/LWG3546>`__,"``common_iterator``'s postfix-proxy is not quite right","June 2021","","","|ranges|"
+`3548 <https://wg21.link/LWG3548>`__,"``shared_ptr`` construction from ``unique_ptr`` should move (not copy) the deleter","June 2021","|Complete|","15.0"
+`3549 <https://wg21.link/LWG3549>`__,"``view_interface`` is overspecified to derive from ``view_base``","June 2021","|Complete|","14.0","|ranges|"
+`3551 <https://wg21.link/LWG3551>`__,"``borrowed_{iterator,subrange}_t`` are overspecified","June 2021","|Nothing To Do|","","|ranges|"
+`3552 <https://wg21.link/LWG3552>`__,"Parallel specialized memory algorithms should require forward iterators","June 2021","",""
+`3553 <https://wg21.link/LWG3553>`__,"Useless constraint in ``split_view::outer-iterator::value_type::begin()``","June 2021","","","|ranges|"
+`3555 <https://wg21.link/LWG3555>`__,"``{transform,elements}_view::iterator::iterator_concept`` should consider const-qualification of the underlying range","June 2021","","","|ranges|"
+"","","","","",""
+`2191 <https://wg21.link/LWG2191>`__,"Incorrect specification of ``match_results(match_results&&)``","October 2021","|Nothing To Do|",""
+`2381 <https://wg21.link/LWG2381>`__,"Inconsistency in parsing floating point numbers","October 2021","",""
+`2762 <https://wg21.link/LWG2762>`__,"``unique_ptr operator*()`` should be ``noexcept``","October 2021","",""
+`3121 <https://wg21.link/LWG3121>`__,"``tuple`` constructor constraints for ``UTypes&&...`` overloads","October 2021","",""
+`3123 <https://wg21.link/LWG3123>`__,"``duration`` constructor from representation shouldn't be effectively non-throwing","October 2021","","","|chrono|"
+`3146 <https://wg21.link/LWG3146>`__,"Excessive unwrapping in ``std::ref/cref``","October 2021","|Complete|","14.0"
+`3152 <https://wg21.link/LWG3152>`__,"``common_type`` and ``common_reference`` have flaws in common","October 2021","",""
+`3293 <https://wg21.link/LWG3293>`__,"``move_iterator operator+()`` has incorrect constraints","October 2021","|Complete|","15.0"
+`3361 <https://wg21.link/LWG3361>`__,"``safe_range<SomeRange&>`` case","October 2021","|Nothing To Do|","","|ranges|"
+`3392 <https://wg21.link/LWG3392>`__,"``ranges::distance()`` cannot be used on a move-only iterator with a sized sentinel","October 2021","|Complete|","14.0","|ranges|"
+`3407 <https://wg21.link/LWG3407>`__,"Some problems with the wording changes of P1739R4","October 2021","|Complete|","15.0","|ranges|"
+`3422 <https://wg21.link/LWG3422>`__,"Issues of ``seed_seq``'s constructors","October 2021","|Complete|","14.0"
+`3470 <https://wg21.link/LWG3470>`__,"``convertible-to-non-slicing`` seems to reject valid case","October 2021","|Complete|","14.0","|ranges|"
+`3480 <https://wg21.link/LWG3480>`__,"``directory_iterator`` and ``recursive_directory_iterator`` are not C++20 ranges","October 2021","|Complete|","14.0","|ranges|"
+`3498 <https://wg21.link/LWG3498>`__,"Inconsistent ``noexcept``-specifiers for ``basic_syncbuf``","October 2021","",""
+`3535 <https://wg21.link/LWG3535>`__,"``join_view::iterator::iterator_category`` and ``::iterator_concept`` lie","October 2021","|Complete|","15.0","|ranges|"
+`3554 <https://wg21.link/LWG3554>`__,"``chrono::parse`` needs ``const charT*`` and ``basic_string_view<charT>`` overloads","October 2021","","","|chrono|"
+`3557 <https://wg21.link/LWG3557>`__,"The ``static_cast`` expression in ``convertible_to`` has the wrong operand","October 2021","|Complete|","14.0"
+`3559 <https://wg21.link/LWG3559>`__,"Semantic requirements of ``sized_range`` is circular","October 2021","|Nothing To Do|","","|ranges|"
+`3560 <https://wg21.link/LWG3560>`__,"``ranges::equal`` and ``ranges::is_permutation`` should short-circuit for ``sized_ranges``","October 2021","","","|ranges|"
+`3561 <https://wg21.link/LWG3561>`__,"Issue with internal counter in ``discard_block_engine``","October 2021","",""
+`3563 <https://wg21.link/LWG3563>`__,"``keys_view`` example is broken","October 2021","","","|ranges|"
+`3566 <https://wg21.link/LWG3566>`__,"Constraint recursion for ``operator<=>(optional<T>, U)``","October 2021","","","|spaceship|"
+`3567 <https://wg21.link/LWG3567>`__,"Formatting move-only iterators take two","October 2021","|Complete|","16.0","|format| |ranges|"
+`3568 <https://wg21.link/LWG3568>`__,"``basic_istream_view`` needs to initialize ``value_``","October 2021","|Complete|","16.0","|ranges|"
+`3570 <https://wg21.link/LWG3570>`__,"``basic_osyncstream::emit`` should be an unformatted output function","October 2021","",""
+`3571 <https://wg21.link/LWG3571>`__,"``flush_emit`` should set ``badbit`` if the ``emit`` call fails","October 2021","",""
+`3572 <https://wg21.link/LWG3572>`__,"``copyable-box`` should be fully ``constexpr``","October 2021","|Complete|","14.0","|ranges|"
+`3573 <https://wg21.link/LWG3573>`__,"Missing Throws element for ``basic_string_view(It begin, End end)``","October 2021","|Complete|","14.0"
+`3574 <https://wg21.link/LWG3574>`__,"``common_iterator`` should be completely ``constexpr``-able","October 2021","|Complete|","14.0","|ranges|"
+`3580 <https://wg21.link/LWG3580>`__,"``iota_view``'s ``iterator``'s binary ``operator+`` should be improved","October 2021","|Complete|","14.0","|ranges|"
+`3581 <https://wg21.link/LWG3581>`__,"The range constructor makes ``basic_string_view`` not trivially move constructible","October 2021","|Complete|","14.0","|ranges|"
+`3585 <https://wg21.link/LWG3585>`__,"``variant`` converting assignment with immovable alternative","October 2021","",""
+`3589 <https://wg21.link/LWG3589>`__,"The ``const`` lvalue reference overload of ``get`` for ``subrange`` does not constrain ``I`` to be ``copyable`` when ``N == 0``","October 2021","|Complete|","14.0","|ranges|"
+`3590 <https://wg21.link/LWG3590>`__,"``split_view::base() const &`` is overconstrained","October 2021","|Complete|","16.0","|ranges|"
+`3591 <https://wg21.link/LWG3591>`__,"``lazy_split_view<input_view>::inner-iterator::base() &&`` invalidates outer iterators","October 2021","","","|ranges|"
+`3592 <https://wg21.link/LWG3592>`__,"``lazy_split_view`` needs to check the simpleness of Pattern","October 2021","","","|ranges|"
+`3593 <https://wg21.link/LWG3593>`__,"Several iterators' ``base() const &`` and ``lazy_split_view::outer-iterator::value_type::end()`` missing ``noexcept``","October 2021","","","|ranges|"
+`3595 <https://wg21.link/LWG3595>`__,"Exposition-only classes proxy and postfix-proxy for ``common_iterator`` should be fully ``constexpr``","October 2021","|Complete|","14.0","|ranges|"
+"","","","","",""
+"`3088 <https://wg21.link/LWG3088>`__","``forward_list::merge`` behaviour unclear when passed ``*this``","February 2022","",""
+"`3471 <https://wg21.link/LWG3471>`__","``polymorphic_allocator::allocate`` does not satisfy ``Cpp17Allocator`` requirements","February 2022","",""
+"`3525 <https://wg21.link/LWG3525>`__","``uses_allocator_construction_args`` fails to handle types convertible to ``pair``","February 2022","",""
+"`3598 <https://wg21.link/LWG3598>`__","``system_category().default_error_condition(0)`` is underspecified","February 2022","",""
+"`3601 <https://wg21.link/LWG3601>`__","common_iterator's postfix-proxy needs ``indirectly_readable`` ","February 2022","","","|ranges|"
+"`3607 <https://wg21.link/LWG3607>`__","``contiguous_iterator`` should not be allowed to have custom ``iter_move`` and ``iter_swap`` behavior","February 2022","|Nothing to do|","","|ranges|"
+"`3610 <https://wg21.link/LWG3610>`__","``iota_view::size`` sometimes rejects integer-class types","February 2022","","","|ranges|"
+"`3612 <https://wg21.link/LWG3612>`__","Inconsistent pointer alignment in ``std::format`` ","February 2022","|Complete|","14.0","|format|"
+"`3616 <https://wg21.link/LWG3616>`__","LWG 3498 seems to miss the non-member ``swap`` for ``basic_syncbuf`` ","February 2022","",""
+"`3618 <https://wg21.link/LWG3618>`__","Unnecessary ``iter_move`` for ``transform_view::iterator`` ","February 2022","","","|ranges|"
+"`3619 <https://wg21.link/LWG3619>`__","Specification of ``vformat_to`` contains ill-formed ``formatted_size`` calls","February 2022","|Nothing to do|","","|format|"
+"`3621 <https://wg21.link/LWG3621>`__","Remove feature-test macro ``__cpp_lib_monadic_optional`` ","February 2022","|Complete|","15.0"
+"`3632 <https://wg21.link/LWG3632>`__","``unique_ptr`` ""Mandates: This constructor is not selected by class template argument deduction""","February 2022","|Nothing to do|",""
+"`3643 <https://wg21.link/LWG3643>`__","Missing ``constexpr`` in ``std::counted_iterator`` ","February 2022","","","|ranges|"
+"`3648 <https://wg21.link/LWG3648>`__","``format`` should not print ``bool`` with ``'c'`` ","February 2022","|Complete|","15.0","|format|"
+"`3649 <https://wg21.link/LWG3649>`__","[fund.ts.v2] Reinstate and bump ``__cpp_lib_experimental_memory_resource`` feature test macro","February 2022","",""
+"`3650 <https://wg21.link/LWG3650>`__","Are ``std::basic_string`` 's ``iterator`` and ``const_iterator`` constexpr iterators?","February 2022","|Nothing to do|",""
+"`3654 <https://wg21.link/LWG3654>`__","``basic_format_context::arg(size_t)`` should be ``noexcept`` ","February 2022","|Complete|","15.0","|format|"
+"`3657 <https://wg21.link/LWG3657>`__","``std::hash<std::filesystem::path>`` is not enabled","February 2022","",""
+"`3660 <https://wg21.link/LWG3660>`__","``iterator_traits<common_iterator>::pointer`` should conform to §[iterator.traits]","February 2022","|Complete|","14.0","|ranges|"
+"`3661 <https://wg21.link/LWG3661>`__","``constinit atomic<shared_ptr<T>> a(nullptr);`` should work","February 2022","",""
+"","","","","",""
+"`3564 <https://wg21.link/LWG3564>`__","``transform_view::iterator<true>::value_type`` and ``iterator_category`` should use ``const F&``","July 2022","","","|ranges|"
+"`3617 <https://wg21.link/LWG3617>`__","``function``/``packaged_task`` deduction guides and deducing ``this``","July 2022","",""
+"`3656 <https://wg21.link/LWG3656>`__","Inconsistent bit operations returning a count","July 2022","|Complete|","15.0",""
+"`3659 <https://wg21.link/LWG3659>`__","Consider ``ATOMIC_FLAG_INIT`` undeprecation","July 2022","|Complete|","15.0"
+"`3670 <https://wg21.link/LWG3670>`__","``Cpp17InputIterators`` don't have integer-class difference types","July 2022","","","|ranges|"
+"`3671 <https://wg21.link/LWG3671>`__","``atomic_fetch_xor`` missing from ``stdatomic.h``","July 2022","",""
+"`3672 <https://wg21.link/LWG3672>`__","``common_iterator::operator->()`` should return by value","July 2022","","","|ranges|"
+"`3683 <https://wg21.link/LWG3683>`__","``operator==`` for ``polymorphic_allocator`` cannot deduce template argument in common cases","July 2022","",""
+"`3687 <https://wg21.link/LWG3687>`__","``expected<cv void, E>`` move constructor should move","July 2022","|Complete|","16.0"
+"`3692 <https://wg21.link/LWG3692>`__","``zip_view::iterator``'s ``operator<=>`` is overconstrained","July 2022","","","|ranges| |spaceship|"
+"`3701 <https://wg21.link/LWG3701>`__","Make ``formatter<remove_cvref_t<const charT[N]>, charT>`` requirement explicit","July 2022","","","|format|"
+"`3702 <https://wg21.link/LWG3702>`__","Should ``zip_transform_view::iterator`` remove ``operator<``","July 2022","","","|ranges| |spaceship|"
+"`3703 <https://wg21.link/LWG3703>`__","Missing requirements for ``expected<T, E>`` requires ``is_void<T>``","July 2022","|Complete|","16.0"
+"`3704 <https://wg21.link/LWG3704>`__","LWG 2059 added overloads that might be ill-formed for sets","July 2022","",""
+"`3705 <https://wg21.link/LWG3705>`__","Hashability shouldn't depend on basic_string's allocator","July 2022","|Complete|","16.0"
+"`3707 <https://wg21.link/LWG3707>`__","chunk_view::outer-iterator::value_type::size should return unsigned type","July 2022","","","|ranges|"
+"`3708 <https://wg21.link/LWG3708>`__","``take_while_view::sentinel``'s conversion constructor should move","July 2022","|Complete|","16.0","|ranges|"
+"`3709 <https://wg21.link/LWG3709>`__","LWG-3703 was underly ambitious","July 2022","",""
+"`3710 <https://wg21.link/LWG3710>`__","The ``end`` of ``chunk_view`` for input ranges can be ``const``","July 2022","","","|ranges|"
+"`3711 <https://wg21.link/LWG3711>`__","Missing preconditions for slide_view constructor","July 2022","","","|ranges|"
+"`3712 <https://wg21.link/LWG3712>`__","``chunk_view`` and ``slide_view`` should not be ``default_initializable``","July 2022","","","|ranges|"
+"`3713 <https://wg21.link/LWG3713>`__","Sorted with respect to comparator (only)","July 2022","",""
+"`3715 <https://wg21.link/LWG3715>`__","``view_interface::empty`` is overconstrained","July 2022","","","|ranges|"
+"`3719 <https://wg21.link/LWG3719>`__","Directory iterators should be usable with default sentinel","July 2022","","","|ranges|"
+"`3721 <https://wg21.link/LWG3721>`__","Allow an ``arg-id`` with a value of zero for ``width`` in ``std-format-spec``","July 2022","|Complete|","16.0","|format|"
+"`3724 <https://wg21.link/LWG3724>`__","``decay-copy`` should be constrained","July 2022","|Complete|","14.0"
+"","","","","",""
+"`3028 <https://wg21.link/LWG3028>`__","Container requirements tables should distinguish ``const`` and non-``const`` variables", "November 2022","","",""
+"`3118 <https://wg21.link/LWG3118>`__","``fpos`` equality comparison unspecified", "November 2022","","",""
+"`3177 <https://wg21.link/LWG3177>`__","Limit permission to specialize variable templates to program-defined types", "November 2022","|Nothing to do|","",""
+"`3515 <https://wg21.link/LWG3515>`__","§[stacktrace.basic.nonmem]: ``operator<<`` should be less templatized", "November 2022","","",""
+"`3545 <https://wg21.link/LWG3545>`__","``std::pointer_traits`` should be SFINAE-friendly", "November 2022","","",""
+"`3569 <https://wg21.link/LWG3569>`__","``join_view`` fails to support ranges of ranges with non-default_initializable iterators", "November 2022","","","|ranges|"
+"`3594 <https://wg21.link/LWG3594>`__","``inout_ptr`` — inconsistent ``release()`` in destructor", "November 2022","","",""
+"`3597 <https://wg21.link/LWG3597>`__","Unsigned integer types don't model advanceable", "November 2022","","","|ranges|"
+"`3600 <https://wg21.link/LWG3600>`__","Making ``istream_iterator`` copy constructor trivial is an ABI break", "November 2022","","",""
+"`3629 <https://wg21.link/LWG3629>`__","``make_error_code`` and ``make_error_condition`` are customization points","November 2022","|Complete|","16.0",""
+"`3636 <https://wg21.link/LWG3636>`__","``formatter<T>::format`` should be ``const``-qualified","November 2022","|Complete|","16.0","|format|"
+"`3646 <https://wg21.link/LWG3646>`__","``std::ranges::view_interface::size`` returns a signed type","November 2022","|Complete|","16.0","|ranges|"
+"`3677 <https://wg21.link/LWG3677>`__","Is a cv-qualified ``pair`` specially handled in uses-allocator construction?", "November 2022","","",""
+"`3717 <https://wg21.link/LWG3717>`__","``common_view::end`` should improve ``random_access_range`` case", "November 2022","","","|ranges|"
+"`3732 <https://wg21.link/LWG3732>`__","``prepend_range`` and ``append_range`` can't be amortized constant time", "November 2022","|Nothing to do|","","|ranges|"
+"`3736 <https://wg21.link/LWG3736>`__","``move_iterator`` missing ``disable_sized_sentinel_for`` specialization", "November 2022","","","|ranges|"
+"`3737 <https://wg21.link/LWG3737>`__","``take_view::sentinel`` should provide ``operator-``", "November 2022","","","|ranges|"
+"`3738 <https://wg21.link/LWG3738>`__","Missing preconditions for ``take_view`` constructor", "November 2022","|Complete|","16.0","|ranges|"
+"`3743 <https://wg21.link/LWG3743>`__","``ranges::to``'s reserve may be ill-formed", "November 2022","","","|ranges|"
+"`3745 <https://wg21.link/LWG3745>`__","``std::atomic_wait`` and its friends lack ``noexcept``", "November 2022","|Complete|","16.0",""
+"`3746 <https://wg21.link/LWG3746>`__","``optional``'s spaceship with ``U`` with a type derived from optional causes infinite constraint meta-recursion", "November 2022","","","|spaceship|"
+"`3747 <https://wg21.link/LWG3747>`__","``ranges::uninitialized_copy_n``, ``ranges::uninitialized_move_n``, and ``ranges::destroy_n`` should use ``std::move``", "November 2022","","","|ranges|"
+"`3750 <https://wg21.link/LWG3750>`__","Too many papers bump ``__cpp_lib_format``", "November 2022","","","|format|"
+"`3751 <https://wg21.link/LWG3751>`__","Missing feature macro for ``flat_set``", "November 2022","","","|flat_containers|"
+"`3753 <https://wg21.link/LWG3753>`__","Clarify entity vs. freestanding entity", "November 2022","","",""
+"`3754 <https://wg21.link/LWG3754>`__","Class template expected synopsis contains declarations that do not match the detailed description", "November 2022","","",""
+"`3755 <https://wg21.link/LWG3755>`__","``tuple-for-each`` can call ``user-defined`` ``operator,``", "November 2022","","",""
+"`3757 <https://wg21.link/LWG3757>`__","What's the effect of ``std::forward_like<void>(x)``?", "November 2022","","",""
+"`3759 <https://wg21.link/LWG3759>`__","``ranges::rotate_copy`` should use ``std::move``", "November 2022","","","|ranges|"
+"`3760 <https://wg21.link/LWG3760>`__","``cartesian_product_view::iterator``'s ``parent_`` is never valid", "November 2022","","","|ranges|"
+"`3761 <https://wg21.link/LWG3761>`__","``cartesian_product_view::iterator::operator-`` should pass by reference", "November 2022","","","|ranges|"
+"`3762 <https://wg21.link/LWG3762>`__","``generator::iterator::operator==`` should pass by reference", "November 2022","","",""
+"`3764 <https://wg21.link/LWG3764>`__","``reference_wrapper::operator()`` should propagate noexcept", "November 2022","","",""
+"`3765 <https://wg21.link/LWG3765>`__","``const_sentinel`` should be constrained", "November 2022","","","|ranges|"
+"`3766 <https://wg21.link/LWG3766>`__","``view_interface::cbegin`` is underconstrained", "November 2022","","","|ranges|"
+"`3770 <https://wg21.link/LWG3770>`__","``const_sentinel_t`` is missing", "November 2022","","","|ranges|"
+"`3773 <https://wg21.link/LWG3773>`__","``views::zip_transform`` still requires ``F`` to be ``copy_constructible`` when empty pack", "November 2022","","","|ranges|"
+"`3774 <https://wg21.link/LWG3774>`__","``<flat_set>`` should include ``<compare>``", "November 2022","","","|flat_containers|"
+"`3775 <https://wg21.link/LWG3775>`__","Broken dependencies in the ``Cpp17Allocator`` requirements", "November 2022","","",""
+"`3778 <https://wg21.link/LWG3778>`__","``vector<bool>`` missing exception specifications", "November 2022","","",""
+"`3781 <https://wg21.link/LWG3781>`__","The exposition-only alias templates ``cont-key-type`` and ``cont-mapped-type`` should be removed", "November 2022","","",""
+"`3782 <https://wg21.link/LWG3782>`__","Should ``<math.h>`` declare ``::lerp``?", "November 2022","","",""
+"`3784 <https://wg21.link/LWG3784>`__","std.compat should not provide ``::byte`` and its friends", "November 2022","","",""
+"`3785 <https://wg21.link/LWG3785>`__","``ranges::to`` is over-constrained on the destination type being a range", "November 2022","","","|ranges|"
+"`3788 <https://wg21.link/LWG3788>`__","``jthread::operator=(jthread&&)`` postconditions are unimplementable under self-assignment", "November 2022","","",""
+"`3792 <https://wg21.link/LWG3792>`__","``__cpp_lib_constexpr_algorithms`` should also be defined in ``<utility>``", "November 2022","|Complete|","16.0",""
+"`3795 <https://wg21.link/LWG3795>`__","Self-move-assignment of ``std::future`` and ``std::shared_future`` have unimplementable postconditions", "November 2022","","",""
+"`3796 <https://wg21.link/LWG3796>`__","``movable-box`` as member should use ``default-initialization`` instead of ``copy-initialization``", "November 2022","","","|ranges|"
+"`3798 <https://wg21.link/LWG3798>`__","Rvalue reference and ``iterator_category``", "November 2022","","",""
+"`3801 <https://wg21.link/LWG3801>`__","``cartesian_product_view::iterator::distance-from`` ignores the size of last underlying range", "November 2022","","","|ranges|"
+"`3814 <https://wg21.link/LWG3814>`__","Add freestanding items requested by NB comments", "November 2022","","",""
+"`3816 <https://wg21.link/LWG3816>`__","``flat_map`` and ``flat_multimap`` should impose sequence container requirements", "November 2022","","","|flat_containers|"
+"`3817 <https://wg21.link/LWG3817>`__","Missing preconditions on ``forward_list`` modifiers", "November 2022","","",""
+"`3818 <https://wg21.link/LWG3818>`__","Exposition-only concepts are not described in library intro", "November 2022","|Nothing to do|","",""
+"`3822 <https://wg21.link/LWG3822>`__","Avoiding normalization in ``filesystem::weakly_canonical``", "November 2022","","",""
+"`3823 <https://wg21.link/LWG3823>`__","Unnecessary precondition for ``is_aggregate``", "November 2022","","",""
+"`3824 <https://wg21.link/LWG3824>`__","Number of ``bind`` placeholders is underspecified", "November 2022","|Nothing to do|","",""
+"`3826 <https://wg21.link/LWG3826>`__","Redundant specification [for overload of yield_value]", "November 2022","","",""
+"","","","","",""
+"`3631 <https://wg21.link/LWG3631>`__","``basic_format_arg(T&&)`` should use ``remove_cvref_t<T>`` throughout","Not voted in","|Complete|","15.0",""
+"`3645 <https://wg21.link/LWG3645>`__","``resize_and_overwrite`` is overspecified to call its callback with lvalues","Not voted in","|Complete|","14.0",""
+"`3343 <https://wg21.link/LWG3343>`__","Ordering of calls to ``unlock()`` and ``notify_all()`` in Effects element of ``notify_all_at_thread_exit()`` should be reversed","Not Yet Adopted","|Complete|","16.0",""
diff --git a/app/src/main/cpp/libcxx/docs/Status/Cxx2bPapers.csv b/app/src/main/cpp/libcxx/docs/Status/Cxx2bPapers.csv
new file mode 100644
index 0000000..e3f39d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Cxx2bPapers.csv
@@ -0,0 +1,106 @@
+"Paper #","Group","Paper Name","Meeting","Status","First released version","Labels"
+"`P0881R7 <https://wg21.link/P0881R7>`__","LWG","A Proposal to add stacktrace library","Autumn 2020","",""
+"`P0943R6 <https://wg21.link/P0943R6>`__","LWG","Support C atomics in C++","Autumn 2020","|Complete|","15.0"
+"`P1048R1 <https://wg21.link/P1048R1>`__","LWG","A proposal for a type trait to detect scoped enumerations","Autumn 2020","|Complete|","12.0"
+"`P1679R3 <https://wg21.link/P1679R3>`__","LWG","string contains function","Autumn 2020","|Complete|","12.0"
+"","","","","","",""
+"`P1682R3 <https://wg21.link/P1682R3>`__","LWG","std::to_underlying for enumerations","February 2021","|Complete|","13.0"
+"`P2017R1 <https://wg21.link/P2017R1>`__","LWG","Conditionally borrowed ranges","February 2021","","","|ranges|"
+"`P2160R1 <https://wg21.link/P2160R1>`__","LWG","Locks lock lockables","February 2021","",""
+"`P2162R2 <https://wg21.link/P2162R2>`__","LWG","Inheriting from std::variant","February 2021","|Complete|","13.0"
+"`P2212R2 <https://wg21.link/P2212R2>`__","LWG","Relax Requirements for time_point::clock","February 2021","",""
+"`P2259R1 <https://wg21.link/P2259R1>`__","LWG","Repairing input range adaptors and counted_iterator","February 2021","","","|ranges|"
+"","","","","","",""
+"`P0401R6 <https://wg21.link/P0401R6>`__","LWG","Providing size feedback in the Allocator interface","June 2021","|Complete|","15.0"
+"`P0448R4 <https://wg21.link/P0448R4>`__","LWG","A strstream replacement using span<charT> as buffer","June 2021","",""
+"`P1132R8 <https://wg21.link/P1132R8>`__","LWG","out_ptr - a scalable output pointer abstraction","June 2021","",""
+"`P1328R1 <https://wg21.link/P1328R1>`__","LWG","Making std::type_info::operator== constexpr","June 2021","",""
+"`P1425R4 <https://wg21.link/P1425R4>`__","LWG","Iterators pair constructors for stack and queue","June 2021","|Complete|","14.0","|ranges|"
+"`P1518R2 <https://wg21.link/P1518R2>`__","LWG","Stop overconstraining allocators in container deduction guides","June 2021","|Complete|","13.0"
+"`P1659R3 <https://wg21.link/P1659R3>`__","LWG","starts_with and ends_with","June 2021","","","|ranges|"
+"`P1951R1 <https://wg21.link/P1951R1>`__","LWG","Default Arguments for pair Forwarding Constructor","June 2021","|Complete|","14.0"
+"`P1989R2 <https://wg21.link/P1989R2>`__","LWG","Range constructor for std::string_view","June 2021","|Complete|","14.0","|ranges|"
+"`P2136R3 <https://wg21.link/P2136R3>`__","LWG","invoke_r","June 2021","",""
+"`P2166R1 <https://wg21.link/P2166R1>`__","LWG","A Proposal to Prohibit std::basic_string and std::basic_string_view construction from nullptr","June 2021","|Complete|","13.0"
+"","","","","","",""
+"`P0288R9 <https://wg21.link/P0288R9>`__","LWG","``any_invocable``","October 2021","",""
+"`P0798R8 <https://wg21.link/P0798R8>`__","LWG","Monadic operations for ``std::optional``","October 2021","|Complete|","14.0"
+"`P0849R8 <https://wg21.link/P0849R8>`__","LWG","``auto(x)``: ``DECAY_COPY`` in the language","October 2021","|Complete|","14.0"
+"`P1072R10 <https://wg21.link/P1072R10>`__","LWG","``basic_string::resize_and_overwrite``","October 2021","|Complete|","14.0"
+"`P1147R1 <https://wg21.link/P1147R1>`__","LWG","Printing ``volatile`` Pointers","October 2021","|Complete|","14.0"
+"`P1272R4 <https://wg21.link/P1272R4>`__","LWG","Byteswapping for fun&&nuf","October 2021","|Complete|","14.0"
+"`P1675R2 <https://wg21.link/P1675R2>`__","LWG","``rethrow_exception`` must be allowed to copy","October 2021","",""
+"`P2077R3 <https://wg21.link/P2077R3>`__","LWG","Heterogeneous erasure overloads for associative containers","October 2021","",""
+"`P2251R1 <https://wg21.link/P2251R1>`__","LWG","Require ``span`` & ``basic_string_view`` to be Trivially Copyable","October 2021","|Complete|","14.0"
+"`P2301R1 <https://wg21.link/P2301R1>`__","LWG","Add a ``pmr`` alias for ``std::stacktrace``","October 2021","",""
+"`P2321R2 <https://wg21.link/P2321R2>`__","LWG","``zip``","October 2021","|In Progress|","","|ranges|"
+"`P2340R1 <https://wg21.link/P2340R1>`__","LWG","Clarifying the status of the 'C headers'","October 2021","",""
+"`P2393R1 <https://wg21.link/P2393R1>`__","LWG","Cleaning up ``integer``-class types","October 2021","",""
+"`P2401R0 <https://wg21.link/P2401R0>`__","LWG","Add a conditional ``noexcept`` specification to ``std::exchange``","October 2021","|Complete|","14.0"
+"","","","","","",""
+"`P0323R12 <https://wg21.link/P0323R12>`__","LWG","``std::expected``","February 2022","|Complete|","16.0"
+"`P0533R9 <https://wg21.link/P0533R9>`__","LWG","``constexpr`` for ``<cmath>`` and ``<cstdlib>``","February 2022","|In progress| [#note-P0533R9]_",""
+"`P0627R6 <https://wg21.link/P0627R6>`__","LWG","Function to mark unreachable code","February 2022","|Complete|","15.0"
+"`P1206R7 <https://wg21.link/P1206R7>`__","LWG","``ranges::to``: A function to convert any range to a container","February 2022","","","|ranges|"
+"`P1413R3 <https://wg21.link/P1413R3>`__","LWG","Deprecate ``std::aligned_storage`` and ``std::aligned_union``","February 2022","|Complete| [#note-P1413R3]_",""
+"`P2255R2 <https://wg21.link/P2255R2>`__","LWG","A type trait to detect reference binding to temporary","February 2022","",""
+"`P2273R3 <https://wg21.link/P2273R3>`__","LWG","Making ``std::unique_ptr`` constexpr","February 2022","|Complete|","16.0"
+"`P2387R3 <https://wg21.link/P2387R3>`__","LWG","Pipe support for user-defined range adaptors","February 2022","","","|ranges|"
+"`P2440R1 <https://wg21.link/P2440R1>`__","LWG","``ranges::iota``, ``ranges::shift_left`` and ``ranges::shift_right``","February 2022","","","|ranges|"
+"`P2441R2 <https://wg21.link/P2441R2>`__","LWG","``views::join_with``","February 2022","","","|ranges|"
+"`P2442R1 <https://wg21.link/P2442R1>`__","LWG","Windowing range adaptors: ``views::chunk`` and ``views::slide``","February 2022","","","|ranges|"
+"`P2443R1 <https://wg21.link/P2443R1>`__","LWG","``views::chunk_by``","February 2022","","","|ranges|"
+"","","","","","",""
+"`P0009R18 <https://wg21.link/P0009R18>`__","LWG","mdspan: A Non-Owning Multidimensional Array Reference","July 2022","",""
+"`P0429R9 <https://wg21.link/P0429R9>`__","LWG","A Standard ``flat_map``","July 2022","",""
+"`P1169R4 <https://wg21.link/P1169R4>`__","LWG","``static operator()``","July 2022","|Complete|","16.0"
+"`P1222R4 <https://wg21.link/P1222R4>`__","LWG","A Standard ``flat_set``","July 2022","",""
+"`P1223R5 <https://wg21.link/P1223R5>`__","LWG","``ranges::find_last()``, ``ranges::find_last_if()``, and ``ranges::find_last_if_not()``","July 2022","","","|ranges|"
+"`P1467R9 <https://wg21.link/P1467R9>`__","LWG","Extended ``floating-point`` types and standard names","July 2022","",""
+"`P1642R11 <https://wg21.link/P1642R11>`__","LWG","Freestanding ``[utilities]``, ``[ranges]``, and ``[iterators]``","July 2022","",""
+"`P1899R3 <https://wg21.link/P1899R3>`__","LWG","``stride_view``","July 2022","","","|ranges|"
+"`P2093R14 <https://wg21.link/P2093R14>`__","LWG","Formatted output","July 2022","",""
+"`P2165R4 <https://wg21.link/P2165R4>`__","LWG","Compatibility between ``tuple``, ``pair`` and ``tuple-like`` objects","July 2022","",""
+"`P2278R4 <https://wg21.link/P2278R4>`__","LWG","``cbegin`` should always return a constant iterator","July 2022","","","|ranges|"
+"`P2286R8 <https://wg21.link/P2286R8>`__","LWG","Formatting Ranges","July 2022","|Complete|","16.0","|format| |ranges|"
+"`P2291R3 <https://wg21.link/P2291R3>`__","LWG","Add Constexpr Modifiers to Functions ``to_chars`` and ``from_chars`` for Integral Types in ``<charconv>`` Header","July 2022","|Complete|","16.0"
+"`P2302R4 <https://wg21.link/P2302R4>`__","LWG","``std::ranges::contains``","July 2022","","","|ranges|"
+"`P2322R6 <https://wg21.link/P2322R6>`__","LWG","``ranges::fold``","July 2022","","","|ranges|"
+"`P2374R4 <https://wg21.link/P2374R4>`__","LWG","``views::cartesian_product``","July 2022","","","|ranges|"
+"`P2404R3 <https://wg21.link/P2404R3>`__","LWG","Move-only types for ``equality_comparable_with``, ``totally_ordered_with``, and ``three_way_comparable_with``","July 2022","",""
+"`P2408R5 <https://wg21.link/P2408R5>`__","LWG","Ranges iterators as inputs to non-Ranges algorithms","July 2022","","","|ranges|"
+"`P2417R2 <https://wg21.link/P2417R2>`__","LWG","A more ``constexpr`` ``bitset``","July 2022","|Complete|","16.0"
+"`P2419R2 <https://wg21.link/P2419R2>`__","LWG","Clarify handling of encodings in localized formatting of chrono types","July 2022","",""
+"`P2438R2 <https://wg21.link/P2438R2>`__","LWG","``std::string::substr() &&``","July 2022","|Complete|","16.0"
+"`P2445R1 <https://wg21.link/P2445R1>`__","LWG","``forward_like``","July 2022","|Complete|","16.0"
+"`P2446R2 <https://wg21.link/P2446R2>`__","LWG","``views::as_rvalue``","July 2022","|Complete|","16.0","|ranges|"
+"`P2460R2 <https://wg21.link/P2460R2>`__","LWG","Relax requirements on ``wchar_t`` to match existing practices","July 2022","",""
+"`P2465R3 <https://wg21.link/P2465R3>`__","LWG","Standard Library Modules ``std`` and ``std.compat``","July 2022","",""
+"`P2467R1 <https://wg21.link/P2467R1>`__","LWG","Support exclusive mode for ``fstreams``","July 2022","",""
+"`P2474R2 <https://wg21.link/P2474R2>`__","LWG","``views::repeat``","July 2022","","","|ranges|"
+"`P2494R2 <https://wg21.link/P2494R2>`__","LWG","Relaxing range adaptors to allow for move only types","July 2022","","","|ranges|"
+"`P2499R0 <https://wg21.link/P2499R0>`__","LWG","``string_view`` range constructor should be ``explicit``","July 2022","|Complete|","16.0","|ranges|"
+"`P2502R2 <https://wg21.link/P2502R2>`__","LWG","``std::generator``: Synchronous Coroutine Generator for Ranges","July 2022","","","|ranges|"
+"`P2508R1 <https://wg21.link/P2508R1>`__","LWG","Exposing ``std::basic-format-string``","July 2022","|Complete|","15.0"
+"`P2513R4 <https://wg21.link/P2513R4>`__","LWG","``char8_t`` Compatibility and Portability Fixes","July 2022","",""
+"`P2517R1 <https://wg21.link/P2517R1>`__","LWG","Add a conditional ``noexcept`` specification to ``std::apply``","July 2022","",""
+"`P2520R0 <https://wg21.link/P2520R0>`__","LWG","``move_iterator`` should be a random access iterator","July 2022","","","|ranges|"
+"`P2540R1 <https://wg21.link/P2540R1>`__","LWG","Empty Product for certain Views","July 2022","","","|ranges|"
+"`P2549R1 <https://wg21.link/P2549R1>`__","LWG","``std::unexpected`` should have ``error()`` as member accessor","July 2022","|Complete|","16.0"
+"`P2553R1 <https://wg21.link/P2553R1>`__","LWG","Make ``mdspan`` ``size_type`` controllable","July 2022","",""
+"`P2554R0 <https://wg21.link/P2554R0>`__","LWG","C-Array Interoperability of MDSpan","July 2022","",""
+"`P2585R0 <https://wg21.link/P2585R0>`__","LWG","Improving default container formatting","July 2022","|Partial|",""
+"`P2590R2 <https://wg21.link/P2590R2>`__","LWG","Explicit lifetime management","July 2022","",""
+"`P2599R2 <https://wg21.link/P2599R2>`__","LWG","``mdspan::size_type`` should be ``index_type``","July 2022","",""
+"`P2604R0 <https://wg21.link/P2604R0>`__","LWG","mdspan: rename pointer and contiguous","July 2022","",""
+"`P2613R1 <https://wg21.link/P2613R1>`__","LWG","Add the missing ``empty`` to ``mdspan``","July 2022","",""
+"","","","","","",""
+"`P1202R5 <https://wg21.link/P1202R5>`__","LWG", "Asymmetric Fences", "November 2022","","","|concurrency TS|"
+"`P1264R2 <https://wg21.link/P1264R2>`__","LWG", "Revising the wording of ``stream`` input operations", "November 2022","|Complete|","9.0",""
+"`P1478R8 <https://wg21.link/P1478R8>`__","LWG", "``Byte-wise`` ``atomic`` ``memcpy``", "November 2022","","","|concurrency TS|"
+"`P2167R3 <https://wg21.link/P2167R3>`__","LWG", "Improved Proposed Wording for LWG 2114", "November 2022","","",""
+"`P2396R1 <https://wg21.link/P2396R1>`__","LWG", "Concurrency TS 2 fixes ", "November 2022","","","|concurrency TS|"
+"`P2505R5 <https://wg21.link/P2505R5>`__","LWG", "Monadic Functions for ``std::expected``", "November 2022","","",""
+"`P2539R4 <https://wg21.link/P2539R4>`__","LWG", "Should the output of ``std::print`` to a terminal be synchronized with the underlying stream?", "November 2022","","","|format|"
+"`P2602R2 <https://wg21.link/P2602R2>`__","LWG", "Poison Pills are Too Toxic", "November 2022","","","|ranges|"
+"`P2708R1 <https://wg21.link/P2708R1>`__","LWG", "No Further Fundamentals TSes", "November 2022","|Nothing to do|","",""
diff --git a/app/src/main/cpp/libcxx/docs/Status/Format.rst b/app/src/main/cpp/libcxx/docs/Status/Format.rst
new file mode 100644
index 0000000..8203cc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Format.rst
@@ -0,0 +1,49 @@
+.. format-status:
+
+================================
+libc++ Format Status
+================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+========
+
+This document contains the status of the Format library in libc++. It is used to
+track both the status of the sub-projects of the Format library and who is assigned to
+these sub-projects. This is imperative to effective implementation so that work is not
+duplicated and implementors are not blocked by each other.
+
+
+If you are interested in contributing to the libc++ Format library, please send
+a message to the #libcxx channel in the LLVM discord. Please *do not* start
+working on any of the assigned items below.
+
+
+Sub-Projects in the Format library
+==================================
+
+.. csv-table::
+   :file: FormatPaper.csv
+   :header-rows: 1
+   :widths: auto
+
+
+Misc. Items and TODOs
+=====================
+
+(Please mark all Format-related TODO comments with the string ``TODO FMT``, so we
+can find them easily.)
+
+
+Paper and Issue Status
+======================
+
+.. csv-table::
+   :file: FormatIssues.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/FormatIssues.csv b/app/src/main/cpp/libcxx/docs/Status/FormatIssues.csv
new file mode 100644
index 0000000..3299b6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/FormatIssues.csv
@@ -0,0 +1,17 @@
+Number,Name,Standard,Assignee,Status,First released version
+`P0645 <https://wg21.link/P0645>`_,"Text Formatting","C++20",Mark de Wever,|Complete|,Clang 14
+`P1652 <https://wg21.link/P1652>`_,"Printf corner cases in std::format","C++20",Mark de Wever,|Complete|,Clang 14
+`P1892 <https://wg21.link/P1892>`_,"Extended locale-specific presentation specifiers for std::format","C++20",Mark de Wever,|Complete|,Clang 14
+`P1868 <https://wg21.link/P1868>`_,"width: clarifying units of width and precision in std::format (Implements the unicode support.)","C++20",Mark de Wever,|Complete|,Clang 14
+`P2216 <https://wg21.link/P2216>`_,"std::format improvements","C++20",Mark de Wever,|Complete|,Clang 15
+`P2418 <https://wg21.link/P2418>`__,"Add support for ``std::generator``-like types to ``std::format``","C++20",Mark de Wever,|Complete|, Clang 15
+"`P2093R14 <https://wg21.link/P2093R14>`__","Formatted output","C++23"
+"`P2286R8 <https://wg21.link/P2286R8>`__","Formatting Ranges","C++23","Mark de Wever","|Complete|",Clang 16
+"`P2508R1 <https://wg21.link/P2508R1>`__","Exposing ``std::basic-format-string``","C++23","Mark de Wever","|Complete|", Clang 15
+"`P2585R0 <https://wg21.link/P2585R0>`__","Improving default container formatting","C++23","Mark de Wever","|In progress|"
+"`P2539R4 <https://wg21.link/P2539R4>`__","Should the output of ``std::print`` to a terminal be synchronized with the underlying stream?","C++23"
+
+`P1361 <https://wg21.link/P1361>`_,"Integration of chrono with text formatting","C++20",Mark de Wever,|In Progress|,
+`P2372 <https://wg21.link/P2372>`__,"Fixing locale handling in chrono formatters","C++20",Mark de Wever,|In Progress|,
+"`P2419R2 <https://wg21.link/P2419R2>`__","Clarify handling of encodings in localized formatting of chrono types","C++23",
+
diff --git a/app/src/main/cpp/libcxx/docs/Status/FormatPaper.csv b/app/src/main/cpp/libcxx/docs/Status/FormatPaper.csv
new file mode 100644
index 0000000..01585c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/FormatPaper.csv
@@ -0,0 +1,40 @@
+Section,Description,Dependencies,Assignee,Status,First released version
+`P1361 <https://wg21.link/P1361>`__ `P2372 <https://wg21.link/P2372>`__,"Formatting chrono"
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::duration<Rep, Period>``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::sys_time<Duration>``",,Mark de Wever,|In Progress|,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::utc_time<Duration>``",A ``<chrono>`` implementation,Not assigned,,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::tai_time<Duration>``",A ``<chrono>`` implementation,Not assigned,,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::gps_time<Duration>``",A ``<chrono>`` implementation,Not assigned,,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::file_time<Duration>``",,Not assigned,,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::local_time<Duration>``",,Not assigned,,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::local-time-format-t<Duration>``",A ``<chrono>`` implementation,Not assigned,,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::day``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::month``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::year``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::weekday``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::weekday_indexed``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::weekday_last``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::month_day``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::month_day_last``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::month_weekday``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::month_weekday_last``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::year_month``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::year_month_day``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::year_month_day_last``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::year_month_weekday``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::year_month_weekday_last``",,Mark de Wever,|Complete|, Clang 16
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::hh_mm_ss<duration<Rep, Period>>``",,Mark de Wever,|In Progress|,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::sys_info``",A ``<chrono>`` implementation,Mark de Wever,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::local_info``",A ``<chrono>`` implementation,Mark de Wever,,
+`[time.syn] <https://wg21.link/time.syn>`_,"Formatter ``chrono::zoned_time<Duration, TimeZonePtr>``",A ``<chrono>`` implementation,Mark de Wever,,
+`P2286R8 <https://wg21.link/P2286R8>`__,"Formatting ranges"
+`[format.syn] <https://wg21.link/format.syn>`_,"Concept ``formattable``",,Mark de Wever,|Complete|, Clang 16
+`[format.string.std] <https://wg21.link/format.string.std>`_,"std-format-spec ``type`` debug",,Mark de Wever,|Complete|,Clang 16
+`[format.range] <https://wg21.link/format.range>`_,"Formatting for ranges: sequences",,Mark de Wever,|Complete|,Clang 16
+`[format.range.fmtmap] <https://wg21.link/format.range.fmtmap>`_,"Formatting for ranges: map",,Mark de Wever,|Complete|,Clang 16
+`[format.range.fmtset] <https://wg21.link/format.range.fmtset>`_,"Formatting for ranges: set",,Mark de Wever,|Complete|,Clang 16
+`[format.range] <https://wg21.link/format.range>`_,"Formatting for ranges: container adaptors",,Mark de Wever,|Complete|,Clang 16
+`[format.range] <https://wg21.link/format.range>`_,"Formatting for ranges: ``pair`` and ``tuple``",,Mark de Wever,|Complete|,Clang 16
+`[format.range] <https://wg21.link/format.range>`_,"Formatting for ranges: ``vector<bool>``",,Mark de Wever,|Complete|,Clang 16
+"`P2585R0 <https://wg21.link/P2585R0>`__","Improving default container formatting"
+`[format.range.fmtstr] <https://wg21.link/format.range.fmtstr>`_,"Formatting for ranges: strings",,Mark de Wever,|In Progress|,
diff --git a/app/src/main/cpp/libcxx/docs/Status/Ranges.rst b/app/src/main/cpp/libcxx/docs/Status/Ranges.rst
new file mode 100644
index 0000000..af4300b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Ranges.rst
@@ -0,0 +1,48 @@
+a. ranges-status:
+
+================================
+libc++ Ranges Status
+================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+================================
+
+This document contains the status of the Ranges library in libc++. It is used to track
+both the status of the sub-projects of the ranges library and who is assigned to these
+sub-projects. This is imperative to effective implementation so that work is not
+duplicated and implementors are not blocked by each other.
+
+If you are interested in contributing to the libc++ Ranges library, please send a message
+to the #libcxx channel in the LLVM discord. Please *do not* start working on any of the
+*assigned* items below.
+
+
+Major features
+=======================================
+
+.. csv-table::
+   :file: RangesMajorFeatures.csv
+   :header-rows: 1
+   :widths: auto
+
+Views
+=======================================
+
+.. csv-table::
+   :file: RangesViews.csv
+   :header-rows: 1
+   :widths: auto
+
+Algorithms
+=======================================
+
+.. csv-table::
+   :file: RangesAlgorithms.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/RangesAlgorithms.csv b/app/src/main/cpp/libcxx/docs/Status/RangesAlgorithms.csv
new file mode 100644
index 0000000..6d63988
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/RangesAlgorithms.csv
@@ -0,0 +1,12 @@
+Standard,Algorithm,Assignee,CL,Status
+C++20,all C++20 algorithms,N/A,N/A,✅
+C++23,`find_last <https://wg21.link/P1223R5>`_,Unassigned,No patch yet,Not started
+C++23,`find_last_if <https://wg21.link/P1223R5>`_,Unassigned,No patch yet,Not started
+C++23,`find_last_if_not <https://wg21.link/P1223R5>`_,Unassigned,No patch yet,Not started
+C++23,`starts_with <https://wg21.link/P1659R3>`_,Unassigned,No patch yet,Not started
+C++23,`ends_with <https://wg21.link/P1659R3>`_,Unassigned,No patch yet,Not started
+C++23,`shift_left <https://wg21.link/p2440r1>`_,Unassigned,No patch yet,Not started
+C++23,`shift_right <https://wg21.link/p2440r1>`_,Unassigned,No patch yet,Not started
+C++23,`iota (algorithm) <https://wg21.link/p2440r1>`_,Unassigned,No patch yet,Not started
+C++23,`fold <https://wg21.link/p2322r5>`_,Unassigned,No patch yet,Not started
+C++23,`contains <https://wg21.link/p2302r2>`_,Unassigned,No patch yet,Not started
diff --git a/app/src/main/cpp/libcxx/docs/Status/RangesMajorFeatures.csv b/app/src/main/cpp/libcxx/docs/Status/RangesMajorFeatures.csv
new file mode 100644
index 0000000..d569f14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/RangesMajorFeatures.csv
@@ -0,0 +1,4 @@
+Standard,Name,Assignee,CL,Status
+C++23,`ranges::to <https://wg21.link/P1206R7>`_,Unassigned,No patch yet,Not started
+C++23,`Pipe support for user-defined range adaptors <https://wg21.link/P2387R3>`_,Unassigned,No patch yet,Not started
+C++23,`Formatting Ranges <https://wg21.link/P2286R8>`_,Mark de Wever,Various,Complete
diff --git a/app/src/main/cpp/libcxx/docs/Status/RangesViews.csv b/app/src/main/cpp/libcxx/docs/Status/RangesViews.csv
new file mode 100644
index 0000000..3bc9c62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/RangesViews.csv
@@ -0,0 +1,37 @@
+Standard,View,Assignee,CL,Status
+C++20,`empty <https://wg21.link/P0896R4>`_,Zoe Carver,`D103208 <https://llvm.org/D103208>`_,✅
+C++20,`single <https://wg21.link/P0896R4>`_,Zoe Carver,`D106840 <https://llvm.org/D106840>`_,✅
+C++20,`iota (view) <https://wg21.link/P0896R4>`_,Zoe Carver,`D107396 <https://llvm.org/D107396>`_,✅
+C++20,`all <https://wg21.link/P0896R4>`_,Zoe Carver,`D102028 <https://llvm.org/D102028>`_,✅
+C++20,`ref_view <https://wg21.link/P0896R4>`_,Zoe Carver,`D102020 <https://llvm.org/D102020>`_,✅
+C++20,`owning_view <https://wg21.link/P0896R4>`_,Arthur O'Dwyer,`D116894 <https://llvm.org/D116894>`_,✅
+C++20,`filter <https://wg21.link/P0896R4>`_,Louis Dionne,`D109086 <https://llvm.org/D109086>`_,✅
+C++20,`transform <https://wg21.link/P0896R4>`_,Zoe Carver,`D103056 <https://llvm.org/D103056>`_,✅
+C++20,`take <https://wg21.link/P0896R4>`_,Zoe Carver,`D106507 <https://llvm.org/D106507>`_,✅
+C++20,`take_while <https://wg21.link/P1035R7>`_,Hui Xie,`D134952 <https://llvm.org/D134952>`_,✅
+C++20,`drop <https://wg21.link/P1035R7>`_,Zoe Carver,`D102037 <https://llvm.org/D102037>`_,✅
+C++20,`drop_while <https://wg21.link/P1035R7>`_,Hui Xie,`D135460 <https://llvm.org/D135460>`_,✅
+C++20,`join <https://wg21.link/P0896R4>`_,Zoe Carver,`D107671 <https://llvm.org/D107671>`_,✅
+C++20,`split <https://wg21.link/P2210R2>`_,Unassigned,No patch yet,Not started
+C++20,`lazy_split <https://wg21.link/P0896R4>`_,Zoe Carver and Konstantin Varlamov,`D107500 <https://llvm.org/D107500>`_,✅
+C++20,`counted <https://wg21.link/P0896R4>`_,Zoe Carver,`D106923 <https://llvm.org/D106923>`_,✅
+C++20,`common <https://wg21.link/P0896R4>`_,Zoe Carver,`D105753 <https://llvm.org/D105753>`_,✅
+C++20,`reverse <https://wg21.link/P0896R4>`_,Zoe Carver,`D107096 <https://llvm.org/D107096>`_,✅
+C++20,`elements / keys / values <https://wg21.link/P1035R7>`_,Hui Xie,`D136268 <https://llvm.org/D136268>`_,✅
+C++20,`istream <https://wg21.link/P1035R7>`_,Hui Xie,`D133317 <https://llvm.org/D133317>`_,✅
+,,,,
+,,,,
+,,,,
+C++23,`repeat <https://wg21.link/P2474R2>`_,Unassigned,No patch yet,Not started
+C++23,`cartesian_product <https://wg21.link/P2374R4>`_,Unassigned,No patch yet,Not started
+C++23,`zip <https://wg21.link/P2321R2>`_,Hui Xie,`D122806 <https://llvm.org/D122806>`_,✅
+C++23,`zip_transform <https://wg21.link/P2321R2>`_,Hui Xie,No patch yet,Not started
+C++23,`adjacent <https://wg21.link/P2321R2>`_,Hui Xie,No patch yet,Not started
+C++23,`adjacent_transform <https://wg21.link/P2321R2>`_,Hui Xie,No patch yet,Not started
+C++23,`join_with <https://wg21.link/P2441R2>`_,Unassigned,No patch yet,Not started
+C++23,`slide <https://wg21.link/P2442R1>`_,Unassigned,No patch yet,Not started
+C++23,`chunk <https://wg21.link/P2442R1>`_,Unassigned,No patch yet,Not started
+C++23,`chunk_by <https://wg21.link/P2443R1>`_,Unassigned,No patch yet,Not started
+C++23,`as_const <https://wg21.link/P2278R4>`_,Unassigned,No patch yet,Not started
+C++23,`as_rvalue <https://wg21.link/P2446R2>`_,Nikolas Klauser,`D137637 <https://llvm.org/D137637>`_,Complete
+C++23,`stride <https://wg21.link/P1899R3>`_,Unassigned,No patch yet,Not started
diff --git a/app/src/main/cpp/libcxx/docs/Status/Spaceship.rst b/app/src/main/cpp/libcxx/docs/Status/Spaceship.rst
new file mode 100644
index 0000000..d596c11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Spaceship.rst
@@ -0,0 +1,53 @@
+.. spaceship-status:
+
+==============================================
+libc++ Spaceship Operator Status (operator<=>)
+==============================================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+   :local:
+
+
+Overview
+================================
+
+This document contains the status of the C++20 spaceship operator support
+in libc++. It is used to track both the status of the sub-projects of the effort
+and who is assigned to these sub-projects. This is imperative to effective
+implementation so that work is not duplicated and implementors are not blocked
+by each other.
+
+If you are interested in contributing to this effort, please send a message
+to the #libcxx channel in the LLVM discord. Please *do not* start working on any
+of the assigned items below.
+
+
+Sub-Projects in the Implementation Effort
+=========================================
+
+.. csv-table::
+   :file: SpaceshipProjects.csv
+   :header-rows: 1
+   :widths: auto
+
+.. note::
+
+   .. [#note-strongorder] ``std::strong_order(long double, long double)`` is not yet implemented.
+
+
+Misc. Items and TODOs
+====================================
+
+(Note: files with required updates will contain the TODO at the beginning of the
+list item so they can be easily found via global search.)
+
+
+Paper and Issue Status
+====================================
+
+.. csv-table::
+   :file: SpaceshipPapers.csv
+   :header-rows: 1
+   :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/SpaceshipPapers.csv b/app/src/main/cpp/libcxx/docs/Status/SpaceshipPapers.csv
new file mode 100644
index 0000000..aab9928
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/SpaceshipPapers.csv
@@ -0,0 +1,9 @@
+"Number","Name","Status","First released version"
+`P1614R2 <https://wg21.link/P1614>`_,The Mothership has Landed,|In Progress|,
+`P2404R0 <https://wg21.link/P2404>`_,"Relaxing equality_comparable_with's, totally_ordered_with's, and three_way_comparable_with's common reference requirements to support move-only types",,
+`LWG3330 <https://wg21.link/LWG3330>`_,Include <compare> from most library headers,"|Complete|","13.0"
+`LWG3347 <https://wg21.link/LWG3347>`_,"std::pair<T, U> now requires T and U to be less-than-comparable",|Nothing To Do|,
+`LWG3350 <https://wg21.link/LWG3350>`_,Simplify return type of lexicographical_compare_three_way,|Nothing To Do|,
+`LWG3360 <https://wg21.link/LWG3360>`_,three_way_comparable_with is inconsistent with similar concepts,|Nothing To Do|,
+`LWG3380 <https://wg21.link/LWG3380>`_,common_type and comparison categories,|Nothing To Do|,
+`LWG3395 <https://wg21.link/LWG3395>`_,Definition for three-way comparison needs to be updated,|Nothing To Do|,
diff --git a/app/src/main/cpp/libcxx/docs/Status/SpaceshipProjects.csv b/app/src/main/cpp/libcxx/docs/Status/SpaceshipProjects.csv
new file mode 100644
index 0000000..f732ec7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/SpaceshipProjects.csv
@@ -0,0 +1,81 @@
+Section,Description,Dependencies,Assignee,Complete
+| `[cmp.concept] <https://wg21.link/cmp.concept>`_,"| `three_way_comparable <https://reviews.llvm.org/D103478>`_
+| `three_way_comparable_with <https://reviews.llvm.org/D103478>`_",None,Ruslan Arutyunyan,|Complete|
+| `[cmp.result] <https://wg21.link/cmp.result>`_,| `compare_three_way_result <https://reviews.llvm.org/D103581>`_,None,Arthur O'Dwyer,|Complete|
+| `[expos.only.func] <https://wg21.link/expos.only.func>`_,"| `synth-three-way <https://reviews.llvm.org/D107721>`_
+| `synth-three-way-result <https://reviews.llvm.org/D107721>`_",[cmp.concept],Kent Ross,|Complete|
+| `[comparisons.three.way] <https://wg21.link/comparisons.three.way>`_,| `compare_three_way <https://reviews.llvm.org/D80899>`_,[cmp.concept],Arthur O'Dwyer,|Complete|
+| `[cmp.alg] <https://wg21.link/cmp.alg>`_,"| `strong_order <https://reviews.llvm.org/D110738>`_
+| `weak_order <https://reviews.llvm.org/D110738>`_
+| `partial_order <https://reviews.llvm.org/D110738>`_
+| `strong_order_fallback <https://reviews.llvm.org/D111514>`_
+| `weak_order_fallback <https://reviews.llvm.org/D111514>`_
+| `partial_order_fallback <https://reviews.llvm.org/D111514>`_",None,Arthur O'Dwyer,|Complete| [#note-strongorder]_
+| `[alg.three.way] <https://wg21.link/alg.three.way>`_,| `lexicographical_compare_three_way <https://reviews.llvm.org/D131395>`_,[comparisons.three.way],Adrian Vogelsgesang,|In Progress|
+| `[type.info] <https://wg21.link/type.info>`_,| `typeinfo <https://reviews.llvm.org/D130853>`_,None,Adrian Vogelsgesang,|Complete|
+| `[coroutine.handle.compare] <https://wg21.link/coroutine.handle.compare>`_,| `coroutine_handle <https://reviews.llvm.org/D109433>`_,[comparisons.three.way],Chuanqi Xu,|Complete|
+| `[pairs.spec] <https://wg21.link/pairs.spec>`_,| `pair <https://reviews.llvm.org/D107721>`_,[expos.only.func],Kent Ross,|Complete|
+| `[syserr.errcat.nonvirtuals] <https://wg21.link/syserr.errcat.nonvirtuals>`_,| `error_category <https://reviews.llvm.org/D131363>`_,[comparisons.three.way],Adrian Vogelsgesang,|Complete|
+| `[syserr.compare] <https://wg21.link/syserr.compare>`_,"| `error_code <https://reviews.llvm.org/D131371>`_
+| `error_condition <https://reviews.llvm.org/D131371>`_",None,Adrian Vogelsgesang,|Complete|
+| `[tuple.rel] <https://wg21.link/tuple.rel>`_,| `tuple <https://reviews.llvm.org/D108250>`_,[expos.only.func],Kent Ross,|Complete|
+"| `[optional.relops] <https://wg21.link/optional.relops>`_
+| `[optional.nullops] <https://wg21.link/optional.nullops>`_
+| `[optional.comp.with.t] <https://wg21.link/optional.comp.with.t>`_","| optional
+| nullopt",None,Kent Ross,|In Progress|
+"| `[variant.relops] <https://wg21.link/variant.relops>`_
+| `[variant.monostate.relops] <https://wg21.link/variant.monostate.relops>`_","| `monostate <https://reviews.llvm.org/D131372>`_
+| `variant <https://reviews.llvm.org/D131372>`_",None,Kent Ross,|Complete|
+| `[unique.ptr.special] <https://wg21.link/unique.ptr.special>`_,| `unique_ptr <https://reviews.llvm.org/D130838>`_,[comparisons.three.way],Adrian Vogelsgesang,|Complete|
+| `[util.smartptr.shared.cmp] <https://wg21.link/util.smartptr.shared.cmp>`_,| `shared_ptr <https://reviews.llvm.org/D130852>`_,[comparisons.three.way],Adrian Vogelsgesang,|Complete|
+| `[type.index.members] <https://wg21.link/type.index.members>`_,| `type_index <https://reviews.llvm.org/D131357>`_,None,Adrian Vogelsgesang,|Complete|
+| `[charconv.syn] <https://wg21.link/charconv.syn>`_,| `to_chars_result <https://reviews.llvm.org/D112366>`_,None,Mark de Wever,|Complete|
+| `[charconv.syn] <https://wg21.link/charconv.syn>`_,| `from_chars_result <https://reviews.llvm.org/D112366>`_,None,Mark de Wever,|Complete|
+| `[stacktrace.entry.cmp] <https://wg21.link/stacktrace.entry.cmp>`_,| stacktrace_entry,None,Unassigned,|Not Started|
+| `[stacktrace.basic.cmp] <https://wg21.link/stacktrace.basic.cmp>`_,| basic_stacktrace,[alg.three.way],Unassigned,|Not Started|
+| `[string.cmp] <https://wg21.link/string.cmp>`_,| `basic_string <https://reviews.llvm.org/D131421>`_,None,Mark de Wever,|Complete|
+| `[string.view.comparison] <https://wg21.link/string.view.comparison>`_,| `basic_string_view <https://reviews.llvm.org/D130295>`_,None,Mark de Wever,|Complete|
+| `[array.syn] <https://wg21.link/array.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),| `array <https://reviews.llvm.org/D132265>`_,[expos.only.func],Adrian Vogelsgesang,|In Progress|
+| `[deque.syn] <https://wg21.link/deque.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),| deque,[expos.only.func],Unassigned,|Not Started|
+| `[forward.list.syn] <https://wg21.link/forward.list.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),| forward_list,[expos.only.func],Unassigned,|Not Started|
+| `[list.syn] <https://wg21.link/list.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),| list,[expos.only.func],Unassigned,|Not Started|
+| `[vector.syn] <https://wg21.link/vector.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),| `vector <https://reviews.llvm.org/D132268>`_,[expos.only.func],Adrian Vogelsgesang,|In Progress|
+| `[associative.map.syn] <https://wg21.link/associative.map.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),"| map
+| multimap",[expos.only.func],Unassigned,|Not Started|
+| `[associative.set.syn] <https://wg21.link/associative.set.syn>`_ (`general <https://wg21.link/container.opt.reqmts>`_),"| multiset
+| set",[expos.only.func],Unassigned,|Not Started|
+| `[queue.ops] <https://wg21.link/queue.ops>`_,| queue,None,Unassigned,|Not Started|
+| `[stack.ops] <https://wg21.link/stack.ops>`_,| stack,None,Unassigned,|Not Started|
+| `[reverse.iter.cmp] <https://wg21.link/reverse.iter.cmp>`_,| `reverse_iterator <https://reviews.llvm.org/D113695>`_,None,Mikhail Maltsev,|Complete|
+| `[move.iter.op.comp] <https://wg21.link/move.iter.op.comp>`_,| move_iterator,None,Unassigned,|Not Started|
+| `[counted.iter.cmp] <https://wg21.link/counted.iter.cmp>`_,| counted_iterator,None,Unassigned,|Not Started|
+| `[range.iota.iterator] <https://wg21.link/range.iota.iterator>`_,| `ranges::iota_view::iterator <https://reviews.llvm.org/D110774>`_,[concepts.cmp],Arthur O'Dwyer,|Complete|
+| `[range.transform.iterator] <https://wg21.link/range.transform.iterator>`_,| `ranges::transform_view::iterator <https://reviews.llvm.org/D110774>`_,[concepts.cmp],Arthur O'Dwyer,|Complete|
+| `[range.elements.iterator] <https://wg21.link/range.elements.iterator>`_,| ranges::elements_view::iterator,[concepts.cmp],Hui Xie,|Complete|
+| `[time.duration.comparisons] <https://wg21.link/time.duration.comparisons>`_, "chrono::duration", None, Mark de Wever, |Not Started|
+| `[time.point.comparisons] <https://wg21.link/time.point.comparisons>`_, "chrono::time_point", None, Mark de Wever, |Not Started|
+"| `[time.cal.day.nonmembers] <https://wg21.link/time.cal.day.nonmembers>`_
+| `[time.cal.month.nonmembers] <https://wg21.link/time.cal.month.nonmembers>`_
+| `[time.cal.year.nonmembers] <https://wg21.link/time.cal.year.nonmembers>`_
+| `[time.cal.md.nonmembers] <https://wg21.link/time.cal.md.nonmembers>`_
+| `[time.cal.mdlast] <https://wg21.link/time.cal.mdlast>`_
+| `[time.cal.ym.nonmembers] <https://wg21.link/time.cal.ym.nonmembers>`_
+| `[time.cal.ymd.nonmembers] <https://wg21.link/time.cal.ymd.nonmembers>`_
+| `[time.cal.ymdlast.nonmembers] <https://wg21.link/time.cal.ymdlast.nonmembers>`_","| `chrono::day <https://reviews.llvm.org/D129887>`_
+| `chrono::month <https://reviews.llvm.org/D129887>`_
+| `chrono::year <https://reviews.llvm.org/D129887>`_
+| `chrono::month_day <https://reviews.llvm.org/D129887>`_
+| `chrono::month_day_last <https://reviews.llvm.org/D129887>`_
+| `chrono::year_month <https://reviews.llvm.org/D129887>`_
+| `chrono::year_month_day <https://reviews.llvm.org/D129887>`_
+| `chrono::year_month_day_last <https://reviews.llvm.org/D129887>`_",None,Mark de Wever,|Complete|
+"| `[time.zone.nonmembers] <https://wg21.link/time.zone.nonmembers>`_
+| `[time.zone.leap.nonmembers] <https://wg21.link/time.zone.leap.nonmembers>`_
+| `[time.zone.link.nonmembers] <https://wg21.link/time.zone.link.nonmembers>`_","| chrono::time_zone
+| chrono::leap_second
+| chrono::time_zone_link",A ``<chrono>`` implementation,Unassigned,|Not Started|
+| `[fs.filesystem.syn] <https://wg21.link/fs.filesystem.syn>`_,| `filesystem::space_info <https://reviews.llvm.org/D130861>`_,None,Adrian Vogelsgesang,|Complete|
+| `[fs.path.nonmember] <https://wg21.link/fs.path.nonmember>`_,| `filesystem::path <https://reviews.llvm.org/D130859>`_,None,Adrian Vogelsgesang,|Complete|
+| `[fs.dir.entry.obs] <https://wg21.link/fs.dir.entry.obs>`_,| `filesystem::directory_entry <https://reviews.llvm.org/D130860>`_,None,Adrian Vogelsgesang,|Complete|
+| `[re.submatch.op] <https://wg21.link/re.submatch.op>`_,| sub_match,None,Mark de Wever,|In Progress|
+| `[thread.thread.id] <https://wg21.link/thread.thread.id>`_,| `thread::id <https://reviews.llvm.org/D131362>`_,None,Adrian Vogelsgesang,|Complete|
diff --git a/app/src/main/cpp/libcxx/docs/Status/Zip.rst b/app/src/main/cpp/libcxx/docs/Status/Zip.rst
new file mode 100644
index 0000000..db2cdfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/Zip.rst
@@ -0,0 +1,29 @@
+.. zip-status:
+
+===========================
+libc++ Zip Status (P2321R2)
+===========================
+
+.. include:: ../Helpers/Styles.rst
+
+.. contents::
+  :local:
+
+Overview
+========
+
+This document contains the status of the C++2b zip implementation in libc++.
+It is used to track both the status of the sub-projects of the effort and who
+is assigned to these sub-projects. This avoids duplicating effort.
+
+If you are interested in contributing to this effort, please send a message
+to the #libcxx channel in the LLVM discord. Please *do not* start working
+on any items below that has already been assigned to someone else.
+
+Sub-projects in the Implementation Effort
+=========================================
+
+.. csv-table::
+  :file: ZipProjects.csv
+  :header-rows: 1
+  :widths: auto
diff --git a/app/src/main/cpp/libcxx/docs/Status/ZipProjects.csv b/app/src/main/cpp/libcxx/docs/Status/ZipProjects.csv
new file mode 100644
index 0000000..699a382
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/Status/ZipProjects.csv
@@ -0,0 +1,27 @@
+Section,Description,Dependencies,Assignee,Complete
+| `[tuple.syn] <https://wg21.link/tuple.syn>`_, "`[tuple] basic_common_reference, common_type <https://reviews.llvm.org/D116538>`_", None, Nikolas Klauser, |Complete|
+| `[tuple.tuple] <https://wg21.link/tuple.tuple>`_, "`[tuple] constructor, assignment and swap overloads <https://reviews.llvm.org/D116621>`_", None, Hui Xie, |Complete|
+| `[utility.syn] <https://wg21.link/utility.syn>`_, "[pair] basic_common_reference, common_type", None, Nikolas Klauser, |Complete|
+| `[pairs.pair] <https://wg21.link/pairs.pair>`_, "`[pair] constructor, assignment and swap overloads <https://reviews.llvm.org/D131495>`_", None, Hui Xie, |Complete|
+"| `[memory.syn] <https://wg21.link/memory.syn>`_
+| `[allocator.uses.construction] <https://wg21.link/allocator.uses.construction>`_", "[pair] uses_allocator_construction_args overloads", None, Nikolas Klauser, |Complete|
+| `[vector.bool] <https://wg21.link/vector.bool>`_, "[vector<bool>::reference] add const operator= overload", None, Hui Xie, |Not Started|
+| `[iterator.concept.winc] <https://wg21.link/iterator.concept.winc>`_, "Update weakly_comparable", None, Hui Xie, |Not Started|
+| `[range.zip] <https://wg21.link/ranges.syn>`_, "`zip_view <https://reviews.llvm.org/D122806>`_", "| `zip_view::iterator`
+| `zip_view::sentinel`", Hui Xie, |Complete|
+| `[range.zip.iterator] <https://wg21.link/range.zip.iterator>`_, "`zip_view::iterator <https://reviews.llvm.org/D122806>`_", None, Hui Xie, |Complete|
+| `[range.zip.sentinel] <https://wg21.link/range.zip.sentinel>`_, "`zip_view::sentinel <https://reviews.llvm.org/D122806>`_", None, Hui Xie, |Complete|
+| `[range.zip.transform.view] <https://wg21.link/range.zip.transform.view>`_, "zip_transform_view", "| `zip_transform_view::iterator`
+| `zip_transform_view::sentinel`", Hui Xie, |Not Started|
+| `[range.zip.transform.iterator] <https://wg21.link/range.zip.transform.iterator>`_, "zip_transform_view::iterator", None, Hui Xie, |Not Started|
+| `[range.zip.transform.sentinel] <https://wg21.link/range.zip.transform.sentinel>`_, "zip_transform_view::sentinel", None, Hui Xie, |Not Started|
+| `[range.adjacent.view] <https://wg21.link/range.adjacent.view>`_, "adjacent_view", "| `adjacent_view::iterator`
+| `adjacent_view::sentinel`", Hui Xie, |Not Started|
+| `[range.adjacent.iterator] <https://wg21.link/range.adjacent.iterator>`_, "adjacent_view::iterator", None, unassigned, |Not Started|
+| `[range.adjacent.sentinel] <https://wg21.link/range.adjacent.sentinel>`_, "adjacent_view::sentinel", None, unassigned, |Not Started|
+| `[range.adjacent.transform.view] <https://wg21.link/range.adjacent.transform.view>`_, "adjacent_transform_view", "| `adjacent_transform_view::iterator`,
+| `adjacent_transform_view::sentinel`", Hui Xie, |Not Started|
+| `[range.adjacent.transform.iterator] <https://wg21.link/range.adjacent.transform.iterator>`_, "adjacent_transform_view::iterator", None, Hui Xie, |Not Started|
+| `[range.adjacent.transform.sentinel] <https://wg21.link/range.adjacent.transform.sentinel>`_, "adjacent_transform_view::sentinel", None, Hui Xie, |Not Started|
+| `[ranges.syn] <https://wg21.link/ranges.syn>`_, "enable_borrowed_range zip_view and adjacent_view", "| `zip_view`
+| `adjacent_view`", Hui Xie, |Not Started|
diff --git a/app/src/main/cpp/libcxx/docs/TestingLibcxx.rst b/app/src/main/cpp/libcxx/docs/TestingLibcxx.rst
new file mode 100644
index 0000000..283646a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/TestingLibcxx.rst
@@ -0,0 +1,180 @@
+==============
+Testing libc++
+==============
+
+.. contents::
+  :local:
+
+Getting Started
+===============
+
+libc++ uses LIT to configure and run its tests.
+
+The primary way to run the libc++ tests is by using ``make check-cxx``.
+
+However since libc++ can be used in any number of possible
+configurations it is important to customize the way LIT builds and runs
+the tests. This guide provides information on how to use LIT directly to
+test libc++.
+
+Please see the `Lit Command Guide`_ for more information about LIT.
+
+.. _LIT Command Guide: https://llvm.org/docs/CommandGuide/lit.html
+
+Usage
+-----
+
+After building libc++, you can run parts of the libc++ test suite by simply
+running ``llvm-lit`` on a specified test or directory. If you're unsure
+whether the required libraries have been built, you can use the
+``cxx-test-depends`` target. For example:
+
+.. code-block:: bash
+
+  $ cd <monorepo-root>
+  $ make -C <build> cxx-test-depends # If you want to make sure the targets get rebuilt
+  $ <build>/bin/llvm-lit -sv libcxx/test/std/re # Run all of the std::regex tests
+  $ <build>/bin/llvm-lit -sv libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp # Run a single test
+  $ <build>/bin/llvm-lit -sv libcxx/test/std/atomics libcxx/test/std/threads # Test std::thread and std::atomic
+
+.. note::
+  If you used the Bootstrapping build instead of the default runtimes build, the
+  ``cxx-test-depends`` target is instead named ``runtimes-test-depends``, and
+  you will need to prefix ``<build>/runtimes/runtimes-<target>-bins/`` to the
+  paths of all tests.
+
+In the default configuration, the tests are built against headers that form a
+fake installation root of libc++. This installation root has to be updated when
+changes are made to the headers, so you should re-run the ``cxx-test-depends``
+target before running the tests manually with ``lit`` when you make any sort of
+change, including to the headers.
+
+Sometimes you'll want to change the way LIT is running the tests. Custom options
+can be specified using the ``--param <name>=<val>`` flag. The most common option
+you'll want to change is the standard dialect (ie ``-std=c++XX``). By default the
+test suite will select the newest C++ dialect supported by the compiler and use
+that. However, you can manually specify the option like so if you want:
+
+.. code-block:: bash
+
+  $ <build>/bin/llvm-lit -sv libcxx/test/std/containers # Run the tests with the newest -std
+  $ <build>/bin/llvm-lit -sv libcxx/test/std/containers --param std=c++03 # Run the tests in C++03
+
+Other parameters are supported by the test suite. Those are defined in ``libcxx/utils/libcxx/test/params.py``.
+If you want to customize how to run the libc++ test suite beyond what is available
+in ``params.py``, you most likely want to use a custom site configuration instead.
+
+The libc++ test suite works by loading a site configuration that defines various
+"base" parameters (via Lit substitutions). These base parameters represent things
+like the compiler to use for running the tests, which default compiler and linker
+flags to use, and how to run an executable. This system is meant to be easily
+extended for custom needs, in particular when porting the libc++ test suite to
+new platforms.
+
+Using a Custom Site Configuration
+---------------------------------
+
+By default, the libc++ test suite will use a site configuration that matches
+the current CMake configuration. It does so by generating a ``lit.site.cfg``
+file in the build directory from one of the configuration file templates in
+``libcxx/test/configs/``, and pointing ``llvm-lit`` (which is a wrapper around
+``llvm/utils/lit/lit.py``) to that file. So when you're running
+``<build>/bin/llvm-lit``, the generated ``lit.site.cfg`` file is always loaded
+instead of ``libcxx/test/lit.cfg.py``. If you want to use a custom site
+configuration, simply point the CMake build to it using
+``-DLIBCXX_TEST_CONFIG=<path-to-site-config>``, and that site configuration
+will be used instead. That file can use CMake variables inside it to make
+configuration easier.
+
+   .. code-block:: bash
+
+     $ cmake <options> -DLIBCXX_TEST_CONFIG=<path-to-site-config>
+     $ make -C <build> cxx-test-depends
+     $ <build>/bin/llvm-lit -sv libcxx/test # will use your custom config file
+
+Additional tools
+----------------
+
+The libc++ test suite uses a few optional tools to improve the code quality.
+
+These tools are:
+- clang-tidy (you might need additional dev packages to compile libc++-specific clang-tidy checks)
+
+Writing Tests
+-------------
+
+When writing tests for the libc++ test suite, you should follow a few guidelines.
+This will ensure that your tests can run on a wide variety of hardware and under
+a wide variety of configurations. We have several unusual configurations such as
+building the tests on one host but running them on a different host, which add a
+few requirements to the test suite. Here's some stuff you should know:
+
+- All tests are run in a temporary directory that is unique to that test and
+  cleaned up after the test is done.
+- When a test needs data files as inputs, these data files can be saved in the
+  repository (when reasonable) and referenced by the test as
+  ``// FILE_DEPENDENCIES: <path-to-dependencies>``. Copies of these files or
+  directories will be made available to the test in the temporary directory
+  where it is run.
+- You should never hardcode a path from the build-host in a test, because that
+  path will not necessarily be available on the host where the tests are run.
+- You should try to reduce the runtime dependencies of each test to the minimum.
+  For example, requiring Python to run a test is bad, since Python is not
+  necessarily available on all devices we may want to run the tests on (even
+  though supporting Python is probably trivial for the build-host).
+
+Benchmarks
+==========
+
+Libc++ contains benchmark tests separately from the test of the test suite.
+The benchmarks are written using the `Google Benchmark`_ library, a copy of which
+is stored in the libc++ repository.
+
+For more information about using the Google Benchmark library see the
+`official documentation <https://github.com/google/benchmark>`_.
+
+.. _`Google Benchmark`: https://github.com/google/benchmark
+
+Building Benchmarks
+-------------------
+
+The benchmark tests are not built by default. The benchmarks can be built using
+the ``cxx-benchmarks`` target.
+
+An example build would look like:
+
+.. code-block:: bash
+
+  $ cd build
+  $ ninja cxx-benchmarks
+
+This will build all of the benchmarks under ``<libcxx-src>/benchmarks`` to be
+built against the just-built libc++. The compiled tests are output into
+``build/projects/libcxx/benchmarks``.
+
+The benchmarks can also be built against the platforms native standard library
+using the ``-DLIBCXX_BUILD_BENCHMARKS_NATIVE_STDLIB=ON`` CMake option. This
+is useful for comparing the performance of libc++ to other standard libraries.
+The compiled benchmarks are named ``<test>.libcxx.out`` if they test libc++ and
+``<test>.native.out`` otherwise.
+
+Also See:
+
+  * :ref:`Building Libc++ <build instructions>`
+  * :ref:`CMake Options`
+
+Running Benchmarks
+------------------
+
+The benchmarks must be run manually by the user. Currently there is no way
+to run them as part of the build.
+
+For example:
+
+.. code-block:: bash
+
+  $ cd build/projects/libcxx/benchmarks
+  $ ./algorithms.libcxx.out # Runs all the benchmarks
+  $ ./algorithms.libcxx.out --benchmark_filter=BM_Sort.* # Only runs the sort benchmarks
+
+For more information about running benchmarks see `Google Benchmark`_.
diff --git a/app/src/main/cpp/libcxx/docs/UsingLibcxx.rst b/app/src/main/cpp/libcxx/docs/UsingLibcxx.rst
new file mode 100644
index 0000000..3b64adb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/UsingLibcxx.rst
@@ -0,0 +1,519 @@
+.. _using-libcxx:
+
+============
+Using libc++
+============
+
+.. contents::
+  :local:
+
+Usually, libc++ is packaged and shipped by a vendor through some delivery vehicle
+(operating system distribution, SDK, toolchain, etc) and users don't need to do
+anything special in order to use the library.
+
+This page contains information about configuration knobs that can be used by
+users when they know libc++ is used by their toolchain, and how to use libc++
+when it is not the default library used by their toolchain.
+
+
+Using a different version of the C++ Standard
+=============================================
+
+Libc++ implements the various versions of the C++ Standard. Changing the version of
+the standard can be done by passing ``-std=c++XY`` to the compiler. Libc++ will
+automatically detect what Standard is being used and will provide functionality that
+matches that Standard in the library.
+
+.. code-block:: bash
+
+  $ clang++ -std=c++17 test.cpp
+
+.. warning::
+  Using ``-std=c++XY`` with a version of the Standard that has not been ratified yet
+  is considered unstable. Libc++ reserves the right to make breaking changes to the
+  library until the standard has been ratified.
+
+
+Enabling experimental C++ Library features
+==========================================
+
+Libc++ provides implementations of some experimental features. Experimental features
+are either Technical Specifications (TSes) or official features that were voted to
+the Standard but whose implementation is not complete or stable yet in libc++. Those
+are disabled by default because they are neither API nor ABI stable. However, the
+``-fexperimental-library`` compiler flag can be defined to turn those features on.
+
+.. warning::
+  Experimental libraries are experimental.
+    * The contents of the ``<experimental/...>`` headers and the associated static
+      library will not remain compatible between versions.
+    * No guarantees of API or ABI stability are provided.
+    * When the standardized version of an experimental feature is implemented,
+      the experimental feature is removed two releases after the non-experimental
+      version has shipped. The full policy is explained :ref:`here <experimental features>`.
+
+.. note::
+  On compilers that do not support the ``-fexperimental-library`` flag, users can
+  define the ``_LIBCPP_ENABLE_EXPERIMENTAL`` macro and manually link against the
+  appropriate static library (usually shipped as ``libc++experimental.a``) to get
+  access to experimental library features.
+
+
+Using libc++ when it is not the system default
+==============================================
+
+On systems where libc++ is provided but is not the default, Clang provides a flag
+called ``-stdlib=`` that can be used to decide which standard library is used.
+Using ``-stdlib=libc++`` will select libc++:
+
+.. code-block:: bash
+
+  $ clang++ -stdlib=libc++ test.cpp
+
+On systems where libc++ is the library in use by default such as macOS and FreeBSD,
+this flag is not required.
+
+
+.. _alternate libcxx:
+
+Using a custom built libc++
+===========================
+
+Most compilers provide a way to disable the default behavior for finding the
+standard library and to override it with custom paths. With Clang, this can
+be done with:
+
+.. code-block:: bash
+
+  $ clang++ -nostdinc++ -nostdlib++           \
+            -isystem <install>/include/c++/v1 \
+            -L <install>/lib                  \
+            -Wl,-rpath,<install>/lib          \
+            -lc++                             \
+            test.cpp
+
+The option ``-Wl,-rpath,<install>/lib`` adds a runtime library search path,
+which causes the system's dynamic linker to look for libc++ in ``<install>/lib``
+whenever the program is loaded.
+
+GCC does not support the ``-nostdlib++`` flag, so one must use ``-nodefaultlibs``
+instead. Since that removes all the standard system libraries and not just libc++,
+the system libraries must be re-added manually. For example:
+
+.. code-block:: bash
+
+  $ g++ -nostdinc++ -nodefaultlibs           \
+        -isystem <install>/include/c++/v1    \
+        -L <install>/lib                     \
+        -Wl,-rpath,<install>/lib             \
+        -lc++ -lc++abi -lm -lc -lgcc_s -lgcc \
+        test.cpp
+
+
+GDB Pretty printers for libc++
+==============================
+
+GDB does not support pretty-printing of libc++ symbols by default. However, libc++ does
+provide pretty-printers itself. Those can be used as:
+
+.. code-block:: bash
+
+  $ gdb -ex "source <libcxx>/utils/gdb/libcxx/printers.py" \
+        -ex "python register_libcxx_printer_loader()" \
+        <args>
+
+.. _include-what-you-use:
+
+include-what-you-use (IWYU)
+===========================
+
+libc++ provides an IWYU `mapping file <https://github.com/include-what-you-use/include-what-you-use/blob/master/docs/IWYUMappings.md>`,
+which drastically improves the accuracy of the tool when using libc++. To use the mapping file with
+IWYU, you should run the tool like so:
+
+.. code-block:: bash
+
+  $ include-what-you-use -Xiwyu /path/to/libcxx/include/libcxx.imp file.cpp
+
+If you would prefer to not use that flag, then you can replace ``/path/to/include-what-you-use/share/libcxx.imp```
+file with the libc++-provided ``libcxx.imp`` file.
+
+.. _assertions-mode:
+
+Enabling the "safe libc++" mode
+===============================
+
+Libc++ contains a number of assertions whose goal is to catch undefined behavior in the
+library, usually caused by precondition violations. Those assertions do not aim to be
+exhaustive -- instead they aim to provide a good balance between safety and performance.
+In particular, these assertions do not change the complexity of algorithms. However, they
+might, in some cases, interfere with compiler optimizations.
+
+By default, these assertions are turned off. Vendors can decide to turn them on while building
+the compiled library by defining ``LIBCXX_ENABLE_ASSERTIONS=ON`` at CMake configuration time.
+When ``LIBCXX_ENABLE_ASSERTIONS`` is used, the compiled library will be built with assertions
+enabled, **and** user code will be built with assertions enabled by default. If
+``LIBCXX_ENABLE_ASSERTIONS=OFF`` at CMake configure time, the compiled library will not contain
+assertions and the default when building user code will be to have assertions disabled.
+As a user, you can consult your vendor to know whether assertions are enabled by default.
+
+Furthermore, independently of any vendor-selected default, users can always control whether
+assertions are enabled in their code by defining ``_LIBCPP_ENABLE_ASSERTIONS=0|1`` before
+including any libc++ header (we recommend passing ``-D_LIBCPP_ENABLE_ASSERTIONS=X`` to the
+compiler). Note that if the compiled library was built by the vendor without assertions,
+functions compiled inside the static or shared library won't have assertions enabled even
+if the user defines ``_LIBCPP_ENABLE_ASSERTIONS=1`` (the same is true for the inverse case
+where the static or shared library was compiled **with** assertions but the user tries to
+disable them). However, most of the code in libc++ is in the headers, so the user-selected
+value for ``_LIBCPP_ENABLE_ASSERTIONS`` (if any) will usually be respected.
+
+When an assertion fails, the program is aborted through a special verbose termination function. The
+library provides a default function that prints an error message and calls ``std::abort()``. Note
+that this function is provided by the static or shared library, so it is only available when deploying
+to a platform where the compiled library is sufficiently recent. On older platforms, the program will
+terminate in an unspecified unsuccessful manner, but the quality of diagnostics won't be great.
+However, users can also override that mechanism at two different levels. First, the mechanism can be
+overriden at compile-time by defining the ``_LIBCPP_VERBOSE_ABORT(format, args...)`` variadic macro.
+When that macro is defined, it will be called with a format string as the first argument, followed by
+a series of arguments to format using printf-style formatting. Compile-time customization may be
+interesting to get precise control over code generation, however it is also inconvenient to use in
+some cases. Indeed, compile-time customization of the verbose termination function requires that all
+translation units be compiled with a consistent definition for ``_LIBCPP_VERBOSE_ABORT`` to avoid ODR
+violations, which can add complexity in the build system of users.
+
+Otherwise, if compile-time customization is not necessary, link-time customization of the handler is also
+possible, similarly to how replacing ``operator new`` works. This mechanism trades off fine-grained control
+over the call site where the termination is initiated in exchange for more ergonomics. Link-time customization
+is done by simply defining the following function in exactly one translation unit of your program:
+
+.. code-block:: cpp
+
+  void __libcpp_verbose_abort(char const* format, ...)
+
+This mechanism is similar to how one can replace the default definition of ``operator new``
+and ``operator delete``. For example:
+
+.. code-block:: cpp
+
+  // In HelloWorldHandler.cpp
+  #include <version> // must include any libc++ header before defining the function (C compatibility headers excluded)
+
+  void std::__libcpp_verbose_abort(char const* format, ...) {
+    va_list list;
+    va_start(list, format);
+    std::vfprintf(stderr, format, list);
+    va_end(list);
+
+    std::abort();
+  }
+
+  // In HelloWorld.cpp
+  #include <vector>
+
+  int main() {
+    std::vector<int> v;
+    int& x = v[0]; // Your termination function will be called here if _LIBCPP_ENABLE_ASSERTIONS=1
+  }
+
+Also note that the verbose termination function should never return. Since assertions in libc++
+catch undefined behavior, your code will proceed with undefined behavior if your function is called
+and does return.
+
+Furthermore, exceptions should not be thrown from the function. Indeed, many functions in the
+library are ``noexcept``, and any exception thrown from the termination function will result
+in ``std::terminate`` being called.
+
+Libc++ Configuration Macros
+===========================
+
+Libc++ provides a number of configuration macros which can be used to enable
+or disable extended libc++ behavior, including enabling "debug mode" or
+thread safety annotations.
+
+**_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS**:
+  This macro is used to enable -Wthread-safety annotations on libc++'s
+  ``std::mutex`` and ``std::lock_guard``. By default, these annotations are
+  disabled and must be manually enabled by the user.
+
+**_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS**:
+  This macro is used to disable all visibility annotations inside libc++.
+  Defining this macro and then building libc++ with hidden visibility gives a
+  build of libc++ which does not export any symbols, which can be useful when
+  building statically for inclusion into another library.
+
+**_LIBCPP_DISABLE_ADDITIONAL_DIAGNOSTICS**:
+  This macro disables the additional diagnostics generated by libc++ using the
+  `diagnose_if` attribute. These additional diagnostics include checks for:
+
+    * Giving `set`, `map`, `multiset`, `multimap` and their `unordered_`
+      counterparts a comparator which is not const callable.
+    * Giving an unordered associative container a hasher that is not const
+      callable.
+
+**_LIBCPP_NO_VCRUNTIME**:
+  Microsoft's C and C++ headers are fairly entangled, and some of their C++
+  headers are fairly hard to avoid. In particular, `vcruntime_new.h` gets pulled
+  in from a lot of other headers and provides definitions which clash with
+  libc++ headers, such as `nothrow_t` (note that `nothrow_t` is a struct, so
+  there's no way for libc++ to provide a compatible definition, since you can't
+  have multiple definitions).
+
+  By default, libc++ solves this problem by deferring to Microsoft's vcruntime
+  headers where needed. However, it may be undesirable to depend on vcruntime
+  headers, since they may not always be available in cross-compilation setups,
+  or they may clash with other headers. The `_LIBCPP_NO_VCRUNTIME` macro
+  prevents libc++ from depending on vcruntime headers. Consequently, it also
+  prevents libc++ headers from being interoperable with vcruntime headers (from
+  the aforementioned clashes), so users of this macro are promising to not
+  attempt to combine libc++ headers with the problematic vcruntime headers. This
+  macro also currently prevents certain `operator new`/`operator delete`
+  replacement scenarios from working, e.g. replacing `operator new` and
+  expecting a non-replaced `operator new[]` to call the replaced `operator new`.
+
+**_LIBCPP_DISABLE_NODISCARD_EXT**:
+  This macro disables library-extensions of ``[[nodiscard]]``.
+  See :ref:`Extended Applications of [[nodiscard]] <nodiscard extension>` for more information.
+
+**_LIBCPP_DISABLE_DEPRECATION_WARNINGS**:
+  This macro disables warnings when using deprecated components. For example,
+  using `std::auto_ptr` when compiling in C++11 mode will normally trigger a
+  warning saying that `std::auto_ptr` is deprecated. If the macro is defined,
+  no warning will be emitted. By default, this macro is not defined.
+
+C++17 Specific Configuration Macros
+-----------------------------------
+**_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES**:
+  This macro is used to re-enable all the features removed in C++17. The effect
+  is equivalent to manually defining each macro listed below.
+
+**_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR**:
+  This macro is used to re-enable `auto_ptr`.
+
+**_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS**:
+  This macro is used to re-enable the `binder1st`, `binder2nd`,
+  `pointer_to_unary_function`, `pointer_to_binary_function`, `mem_fun_t`,
+  `mem_fun1_t`, `mem_fun_ref_t`, `mem_fun1_ref_t`, `const_mem_fun_t`,
+  `const_mem_fun1_t`, `const_mem_fun_ref_t`, and `const_mem_fun1_ref_t`
+  class templates, and the `bind1st`, `bind2nd`, `mem_fun`, `mem_fun_ref`,
+  and `ptr_fun` functions.
+
+**_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE**:
+  This macro is used to re-enable the `random_shuffle` algorithm.
+
+**_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS**:
+  This macro is used to re-enable `set_unexpected`, `get_unexpected`, and
+  `unexpected`.
+
+C++20 Specific Configuration Macros
+-----------------------------------
+**_LIBCPP_DISABLE_NODISCARD_AFTER_CXX17**:
+  This macro can be used to disable diagnostics emitted from functions marked
+  ``[[nodiscard]]`` in dialects after C++17.  See :ref:`Extended Applications of [[nodiscard]] <nodiscard extension>`
+  for more information.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_FEATURES**:
+  This macro is used to re-enable all the features removed in C++20. The effect
+  is equivalent to manually defining each macro listed below.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS**:
+  This macro is used to re-enable redundant members of `allocator<T>`,
+  including `pointer`, `reference`, `rebind`, `address`, `max_size`,
+  `construct`, `destroy`, and the two-argument overload of `allocate`.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_VOID_SPECIALIZATION**:
+  This macro is used to re-enable the library-provided specializations of
+  `allocator<void>` and `allocator<const void>`.
+  Use it in conjunction with `_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS`
+  to ensure that removed members of `allocator<void>` can be accessed.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS**:
+  This macro is used to re-enable the `argument_type`, `result_type`,
+  `first_argument_type`, and `second_argument_type` members of class
+  templates such as `plus`, `logical_not`, `hash`, and `owner_less`.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS**:
+  This macro is used to re-enable `not1`, `not2`, `unary_negate`,
+  and `binary_negate`.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR**:
+  This macro is used to re-enable `raw_storage_iterator`.
+
+**_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS**:
+  This macro is used to re-enable `is_literal_type`, `is_literal_type_v`,
+  `result_of` and `result_of_t`.
+
+
+Libc++ Extensions
+=================
+
+This section documents various extensions provided by libc++, how they're
+provided, and any information regarding how to use them.
+
+.. _nodiscard extension:
+
+Extended applications of ``[[nodiscard]]``
+------------------------------------------
+
+The ``[[nodiscard]]`` attribute is intended to help users find bugs where
+function return values are ignored when they shouldn't be. After C++17 the
+C++ standard has started to declared such library functions as ``[[nodiscard]]``.
+However, this application is limited and applies only to dialects after C++17.
+Users who want help diagnosing misuses of STL functions may desire a more
+liberal application of ``[[nodiscard]]``.
+
+For this reason libc++ provides an extension that does just that! The
+extension is enabled by default and can be disabled by defining ``_LIBCPP_DISABLE_NODISCARD_EXT``.
+The extended applications of ``[[nodiscard]]`` takes two forms:
+
+1. Backporting ``[[nodiscard]]`` to entities declared as such by the
+   standard in newer dialects, but not in the present one.
+
+2. Extended applications of ``[[nodiscard]]``, at the library's discretion,
+   applied to entities never declared as such by the standard.
+
+Entities declared with ``_LIBCPP_NODISCARD_EXT``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This section lists all extended applications of ``[[nodiscard]]`` to entities
+which no dialect declares as such (See the second form described above).
+
+* ``adjacent_find``
+* ``all_of``
+* ``any_of``
+* ``binary_search``
+* ``clamp``
+* ``count_if``
+* ``count``
+* ``equal_range``
+* ``equal``
+* ``find_end``
+* ``find_first_of``
+* ``find_if_not``
+* ``find_if``
+* ``find``
+* ``get_temporary_buffer``
+* ``includes``
+* ``is_heap_until``
+* ``is_heap``
+* ``is_partitioned``
+* ``is_permutation``
+* ``is_sorted_until``
+* ``is_sorted``
+* ``lexicographical_compare``
+* ``lower_bound``
+* ``max_element``
+* ``max``
+* ``min_element``
+* ``min``
+* ``minmax_element``
+* ``minmax``
+* ``mismatch``
+* ``none_of``
+* ``remove_if``
+* ``remove``
+* ``search_n``
+* ``search``
+* ``unique``
+* ``upper_bound``
+* ``ranges::adjacent_find``
+* ``ranges::all_of``
+* ``ranges::any_of``
+* ``ranges::binary_search``
+* ``ranges::clamp``
+* ``ranges::count_if``
+* ``ranges::count``
+* ``ranges::equal_range``
+* ``ranges::equal``
+* ``ranges::find_end``
+* ``ranges::find_first_of``
+* ``ranges::find_if_not``
+* ``ranges::find_if``
+* ``ranges::find``
+* ``ranges::get_temporary_buffer``
+* ``ranges::includes``
+* ``ranges::is_heap_until``
+* ``ranges::is_heap``
+* ``ranges::is_partitioned``
+* ``ranges::is_permutation``
+* ``ranges::is_sorted_until``
+* ``ranges::is_sorted``
+* ``ranges::lexicographical_compare``
+* ``ranges::lower_bound``
+* ``ranges::max_element``
+* ``ranges::max``
+* ``ranges::min_element``
+* ``ranges::min``
+* ``ranges::minmax_element``
+* ``ranges::minmax``
+* ``ranges::mismatch``
+* ``ranges::none_of``
+* ``ranges::remove_if``
+* ``ranges::remove``
+* ``ranges::search_n``
+* ``ranges::search``
+* ``ranges::unique``
+* ``ranges::upper_bound``
+* ``lock_guard``'s constructors
+* ``as_const``
+* ``bit_cast``
+* ``forward``
+* ``move``
+* ``move_if_noexcept``
+* ``identity::operator()``
+* ``to_integer``
+* ``to_underlying``
+* ``signbit``
+* ``fpclassify``
+* ``isfinite``
+* ``isinf``
+* ``isnan``
+* ``isnormal``
+* ``isgreater``
+* ``isgreaterequal``
+* ``isless``
+* ``islessequal``
+* ``islessgreater``
+* ``isunordered``
+* ``ceil``
+* ``fabs``
+* ``floor``
+* ``cbrt``
+* ``copysign``
+* ``fmax``
+* ``fmin``
+* ``nearbyint``
+* ``rint``
+* ``round``
+* ``trunc``
+
+Extended integral type support
+------------------------------
+
+Several platforms support types that are not specified in the Standard, such as
+the 128-bit integral types ``__int128_t`` and ``__uint128_t``. As an extension,
+libc++ does a best-effort attempt to support these types like other integral
+types, by supporting them notably in:
+
+* ``<bits>``
+* ``<charconv>``
+* ``<functional>``
+* ``<type_traits>``
+* ``<format>``
+* ``<random>``
+
+Additional types supported in random distributions
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The `C++ Standard <http://eel.is/c++draft/rand#req.genl-1.5>`_ mentions that instantiating several random number
+distributions with types other than ``short``, ``int``, ``long``, ``long long``, and their unsigned versions is
+undefined. As an extension, libc++ supports instantiating ``binomial_distribution``, ``discrete_distribution``,
+``geometric_distribution``, ``negative_binomial_distribution``, ``poisson_distribution``, and ``uniform_int_distribution``
+with ``int8_t``, ``__int128_t`` and their unsigned versions.
+
+Extensions to ``<format>``
+--------------------------
+
+The exposition only type ``basic-format-string`` and its typedefs
+``format-string`` and ``wformat-string`` became ``basic_format_string``,
+``format_string``, and ``wformat_string`` in C++23. Libc++ makes these types
+available in C++20 as an extension.
diff --git a/app/src/main/cpp/libcxx/docs/conf.py b/app/src/main/cpp/libcxx/docs/conf.py
new file mode 100644
index 0000000..f680969
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/conf.py
@@ -0,0 +1,252 @@
+# -*- coding: utf-8 -*-
+#
+# libc++ documentation build configuration file.
+#
+# This file is execfile()d with the current directory set to its containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import sys, os
+from datetime import date
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#sys.path.insert(0, os.path.abspath('.'))
+
+# -- General configuration -----------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#needs_sphinx = '1.0'
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = ['sphinx.ext.intersphinx', 'sphinx.ext.todo']
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The encoding of source files.
+#source_encoding = 'utf-8-sig'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'libc++'
+copyright = u'2011-%d, LLVM Project' % date.today().year
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+# The short X.Y version.
+version = '17.0'
+# The full version, including alpha/beta/rc tags.
+release = '17.0'
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#language = None
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+#today = ''
+# Else, today_fmt is used as the format for a strftime call.
+today_fmt = '%Y-%m-%d'
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+exclude_patterns = ['_build', 'Helpers']
+
+# The reST default role (used for this markup: `text`) to use for all documents.
+#default_role = None
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+#add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+#add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+show_authors = True
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'friendly'
+
+# A list of ignored prefixes for module index sorting.
+#modindex_common_prefix = []
+
+
+# -- Options for HTML output ---------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+html_theme = 'haiku'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#html_theme_options = {}
+
+# Add any paths that contain custom themes here, relative to this directory.
+#html_theme_path = []
+
+# The name for this set of Sphinx documents.  If None, it defaults to
+# "<project> v<release> documentation".
+#html_title = None
+
+# A shorter title for the navigation bar.  Default is the same as html_title.
+#html_short_title = None
+
+# The name of an image file (relative to this directory) to place at the top
+# of the sidebar.
+#html_logo = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+#html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = []
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+#html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+#html_use_smartypants = True
+
+# Custom sidebar templates, maps document names to template names.
+#html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+#html_additional_pages = {}
+
+# If false, no module index is generated.
+#html_domain_indices = True
+
+# If false, no index is generated.
+#html_use_index = True
+
+# If true, the index is split into individual pages for each letter.
+#html_split_index = False
+
+# If true, links to the reST sources are added to the pages.
+#html_show_sourcelink = True
+
+# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
+#html_show_sphinx = True
+
+# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
+#html_show_copyright = True
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it.  The value of this option must be the
+# base URL from which the finished HTML is served.
+#html_use_opensearch = ''
+
+# This is the file name suffix for HTML files (e.g. ".xhtml").
+#html_file_suffix = None
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'libcxxdoc'
+
+
+# -- Options for LaTeX output --------------------------------------------------
+
+latex_elements = {
+# The paper size ('letterpaper' or 'a4paper').
+#'papersize': 'letterpaper',
+
+# The font size ('10pt', '11pt' or '12pt').
+#'pointsize': '10pt',
+
+# Additional stuff for the LaTeX preamble.
+#'preamble': '',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title, author, documentclass [howto/manual]).
+latex_documents = [
+  ('contents', 'libcxx.tex', u'libcxx Documentation',
+   u'LLVM project', 'manual'),
+]
+
+# The name of an image file (relative to this directory) to place at the top of
+# the title page.
+#latex_logo = None
+
+# For "manual" documents, if this is true, then toplevel headings are parts,
+# not chapters.
+#latex_use_parts = False
+
+# If true, show page references after internal links.
+#latex_show_pagerefs = False
+
+# If true, show URL addresses after external links.
+#latex_show_urls = False
+
+# Documents to append as an appendix to all manuals.
+#latex_appendices = []
+
+# If false, no module index is generated.
+#latex_domain_indices = True
+
+
+# -- Options for manual page output --------------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    ('contents', 'libc++', u'libc++ Documentation',
+     [u'LLVM project'], 1)
+]
+
+# If true, show URL addresses after external links.
+#man_show_urls = False
+
+
+# -- Options for Texinfo output ------------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+  ('contents', 'libc++', u'libc++ Documentation',
+   u'LLVM project', 'libc++', 'One line description of project.',
+   'Miscellaneous'),
+]
+
+# Documents to append as an appendix to all manuals.
+#texinfo_appendices = []
+
+# If false, no module index is generated.
+#texinfo_domain_indices = True
+
+# How to display URL addresses: 'footnote', 'no', or 'inline'.
+#texinfo_show_urls = 'footnote'
+
+
+# FIXME: Define intersphinx configuration.
+intersphinx_mapping = {}
+
+
+# -- Options for extensions ----------------------------------------------------
+
+# Enable this if you want TODOs to show up in the generated documentation.
+todo_include_todos = True
diff --git a/app/src/main/cpp/libcxx/docs/index.rst b/app/src/main/cpp/libcxx/docs/index.rst
new file mode 100644
index 0000000..265d23c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/docs/index.rst
@@ -0,0 +1,225 @@
+.. _index:
+
+=============================
+"libc++" C++ Standard Library
+=============================
+
+Overview
+========
+
+libc++ is a new implementation of the C++ standard library, targeting C++11 and
+above.
+
+* Features and Goals
+
+  * Correctness as defined by the C++11 standard.
+  * Fast execution.
+  * Minimal memory use.
+  * Fast compile times.
+  * ABI compatibility with gcc's libstdc++ for some low-level features
+    such as exception objects, rtti and memory allocation.
+  * Extensive unit tests.
+
+* Design and Implementation:
+
+  * Extensive unit tests
+  * Internal linker model can be dumped/read to textual format
+  * Additional linking features can be plugged in as "passes"
+  * OS specific and CPU specific code factored out
+
+
+Getting Started with libc++
+===========================
+
+.. toctree::
+   :maxdepth: 1
+
+   ReleaseNotes
+   UsingLibcxx
+   BuildingLibcxx
+   TestingLibcxx
+   Contributing
+   Status/Cxx14
+   Status/Cxx17
+   Status/Cxx20
+   Status/Cxx2b
+   Status/Format
+   Status/Ranges
+   Status/Spaceship
+   Status/Zip
+
+
+.. toctree::
+    :hidden:
+
+    AddingNewCIJobs
+    FeatureTestMacroTable
+
+
+Current Status
+==============
+
+After its initial introduction, many people have asked "why start a new
+library instead of contributing to an existing library?" (like Apache's
+libstdcxx, GNU's libstdc++, STLport, etc).  There are many contributing
+reasons, but some of the major ones are:
+
+* From years of experience (including having implemented the standard
+  library before), we've learned many things about implementing
+  the standard containers which require ABI breakage and fundamental changes
+  to how they are implemented.  For example, it is generally accepted that
+  building std::string using the "short string optimization" instead of
+  using Copy On Write (COW) is a superior approach for multicore
+  machines (particularly in C++11, which has rvalue references).  Breaking
+  ABI compatibility with old versions of the library was
+  determined to be critical to achieving the performance goals of
+  libc++.
+
+* Mainline libstdc++ has switched to GPL3, a license which the developers
+  of libc++ cannot use.  libstdc++ 4.2 (the last GPL2 version) could be
+  independently extended to support C++11, but this would be a fork of the
+  codebase (which is often seen as worse for a project than starting a new
+  independent one).  Another problem with libstdc++ is that it is tightly
+  integrated with G++ development, tending to be tied fairly closely to the
+  matching version of G++.
+
+* STLport and the Apache libstdcxx library are two other popular
+  candidates, but both lack C++11 support.  Our experience (and the
+  experience of libstdc++ developers) is that adding support for C++11 (in
+  particular rvalue references and move-only types) requires changes to
+  almost every class and function, essentially amounting to a rewrite.
+  Faced with a rewrite, we decided to start from scratch and evaluate every
+  design decision from first principles based on experience.
+  Further, both projects are apparently abandoned: STLport 5.2.1 was
+  released in Oct'08, and STDCXX 4.2.1 in May'08.
+
+.. _SupportedPlatforms:
+
+Platform and Compiler Support
+=============================
+
+Libc++ aims to support common compilers that implement the C++11 Standard. In order to strike a
+good balance between stability for users and maintenance cost, testing coverage and development
+velocity, libc++ drops support for older compilers as newer ones are released.
+
+============ =============== ========================== =====================
+Compiler     Versions        Restrictions               Support policy
+============ =============== ========================== =====================
+Clang        14, 15, 16-git                             latest two stable releases per `LLVM's release page <https://releases.llvm.org>`_ and the development version
+AppleClang   14                                         latest stable release per `Xcode's release page <https://developer.apple.com/documentation/xcode-release-notes>`_
+Open XL      17.1 (AIX)                                 latest stable release per `Open XL's documentation page <https://www.ibm.com/docs/en/openxl-c-and-cpp-aix>`_
+GCC          12              In C++11 or later only     latest stable release per `GCC's release page <https://gcc.gnu.org/releases.html>`_
+============ =============== ========================== =====================
+
+Libc++ also supports common platforms and architectures:
+
+=============== ========================= ============================
+Target platform Target architecture       Notes
+=============== ========================= ============================
+macOS 10.9+     i386, x86_64, arm64       Building the shared library itself requires targetting macOS 10.11+
+FreeBSD 10+     i386, x86_64, arm
+Linux           i386, x86_64, arm, arm64
+Windows         i386, x86_64              Both MSVC and MinGW style environments
+AIX             powerpc, powerpc64
+=============== ========================= ============================
+
+Generally speaking, libc++ should work on any platform that provides a fairly complete
+C Standard Library. It is also possible to turn off parts of the library for use on
+systems that provide incomplete support.
+
+However, libc++ aims to provide a high-quality implementation of the C++ Standard
+Library, especially when it comes to correctness. As such, we aim to have test coverage
+for all the platforms and compilers that we claim to support. If a platform or compiler
+is not listed here, it is not officially supported. It may happen to work, and
+in practice the library is known to work on some platforms not listed here, but
+we don't make any guarantees. If you would like your compiler and/or platform
+to be formally supported and listed here, please work with the libc++ team to set
+up testing for your configuration.
+
+
+C++ Dialect Support
+===================
+
+* C++11 - Complete
+* :ref:`C++14 - Complete <cxx14-status>`
+* :ref:`C++17 - In Progress <cxx17-status>`
+* :ref:`C++20 - In Progress <cxx20-status>`
+* :ref:`C++2b - In Progress <cxx2b-status>`
+* :ref:`C++ Feature Test Macro Status <feature-status>`
+
+
+Notes and Known Issues
+======================
+
+This list contains known issues with libc++
+
+* Building libc++ with ``-fno-rtti`` is not supported. However
+  linking against it with ``-fno-rtti`` is supported.
+
+
+A full list of currently open libc++ bugs can be `found here`__.
+
+.. __:  https://github.com/llvm/llvm-project/labels/libc%2B%2B
+
+
+Design Documents
+================
+
+.. toctree::
+   :maxdepth: 1
+
+   DesignDocs/ABIVersioning
+   DesignDocs/AtomicDesign
+   DesignDocs/CapturingConfigInfo
+   DesignDocs/DebugMode
+   DesignDocs/ExperimentalFeatures
+   DesignDocs/ExtendedCXX03Support
+   DesignDocs/FeatureTestMacros
+   DesignDocs/FileTimeType
+   DesignDocs/HeaderRemovalPolicy
+   DesignDocs/NoexceptPolicy
+   DesignDocs/ThreadingSupportAPI
+   DesignDocs/UniquePtrTrivialAbi
+   DesignDocs/UnspecifiedBehaviorRandomization
+   DesignDocs/VisibilityMacros
+
+
+Build Bots and Test Coverage
+============================
+
+* `Buildkite CI pipeline <https://buildkite.com/llvm-project/libcxx-ci>`_
+* `LLVM Buildbot Builders <https://lab.llvm.org/buildbot>`_
+* :ref:`Adding New CI Jobs <AddingNewCIJobs>`
+
+
+Getting Involved
+================
+
+First please review our `Developer's Policy <https://llvm.org/docs/DeveloperPolicy.html>`__
+and `Getting started with LLVM <https://llvm.org/docs/GettingStarted.html>`__.
+
+**Bug Reports**
+
+If you think you've found a bug in libc++, please report it using
+the `LLVM bug tracker`_. If you're not sure, you
+can ask for support on the `libcxx forum`_ or on IRC.
+
+**Patches**
+
+If you want to contribute a patch to libc++, the best place for that is
+`Phabricator <https://llvm.org/docs/Phabricator.html>`_. Please add `libcxx-commits` as a subscriber.
+Also make sure you are subscribed to the `libcxx-commits mailing list`_.
+
+**Discussion and Questions**
+
+Send discussions and questions to the `libcxx forum`_.
+
+
+Quick Links
+===========
+* `LLVM Homepage <https://llvm.org/>`_
+* `libc++abi Homepage <http://libcxxabi.llvm.org/>`_
+* `LLVM Bug Tracker <https://github.com/llvm/llvm-project/labels/libc++/>`_
+* `libcxx-commits Mailing List <http://lists.llvm.org/mailman/listinfo/libcxx-commits>`_
+* `libcxx Forum <https://discourse.llvm.org/c/runtimes/libcxx/>`_
+* `Browse libc++ Sources <https://github.com/llvm/llvm-project/tree/main/libcxx/>`_
diff --git a/app/src/main/cpp/libcxx/lib/abi/CHANGELOG.TXT b/app/src/main/cpp/libcxx/lib/abi/CHANGELOG.TXT
new file mode 100644
index 0000000..6f17e85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/CHANGELOG.TXT
@@ -0,0 +1,897 @@
+ABI Changelog
+==============
+This changelog contains information about ABI changes in libc++. Specifically
+the addition and deletion of symbols from the libc++ dylib.
+
+Each entry should start with the revision number followed by a description of
+the change. The entry should contain a summary of the ABI changes made,
+including what symbols were added, removed, or changed.
+
+To generate a summary, re-generate the new ABI list using the
+`generate-cxx-abilist` target, and look at the diff.
+
+New entries should be added directly below the "Version" header.
+
+------------
+Version 16.0
+------------
+
+* [libc++][PMR] Move the pmr::memory_resource destructor into the dylib
+
+  All platforms
+  -------------
+  Symbol added: _ZNSt3__13pmr15memory_resourceD0Ev
+  Symbol added: _ZNSt3__13pmr15memory_resourceD1Ev
+  Symbol added: _ZNSt3__13pmr15memory_resourceD2Ev
+  Symbol added: _ZTVNSt3__13pmr15memory_resourceE
+
+* [libc++] [C++17] Implement <memory_resource>.
+
+  This commit adds <memory_resource> to the shared library.
+
+  All platforms
+  -------------
+  Symbol added: _ZNKSt3__13pmr26synchronized_pool_resource11do_is_equalERKNS0_15memory_resourceE
+  Symbol added: _ZNKSt3__13pmr28unsynchronized_pool_resource12__pool_indexEmm
+  Symbol added: _ZNKSt3__13pmr28unsynchronized_pool_resource17__pool_block_sizeEi
+  Symbol added: _ZNKSt3__13pmr28unsynchronized_pool_resource22__log2_pool_block_sizeEi
+  Symbol added: _ZNKSt3__13pmr28unsynchronized_pool_resource7optionsEv
+  Symbol added: _ZNSt3__13pmr19new_delete_resourceEv
+  Symbol added: _ZNSt3__13pmr20get_default_resourceEv
+  Symbol added: _ZNSt3__13pmr20null_memory_resourceEv
+  Symbol added: _ZNSt3__13pmr20set_default_resourceEPNS0_15memory_resourceE
+  Symbol added: _ZNSt3__13pmr25monotonic_buffer_resource11do_allocateEmm
+  Symbol added: _ZNSt3__13pmr25monotonic_buffer_resource14__chunk_footer25__try_allocate_from_chunkEmm
+  Symbol added: _ZNSt3__13pmr25monotonic_buffer_resource20__initial_descriptor25__try_allocate_from_chunkEmm
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resource11do_allocateEmm
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resource12__adhoc_pool13__do_allocateEPNS0_15memory_resourceEmm
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resource12__adhoc_pool13__release_ptrEPNS0_15memory_resourceE
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resource12__adhoc_pool15__do_deallocateEPNS0_15memory_resourceEPvmm
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resource13do_deallocateEPvmm
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resource7releaseEv
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resourceC1ERKNS0_12pool_optionsEPNS0_15memory_resourceE
+  Symbol added: _ZNSt3__13pmr28unsynchronized_pool_resourceC2ERKNS0_12pool_optionsEPNS0_15memory_resourceE
+  Symbol added: _ZTINSt3__13pmr15memory_resourceE
+  Symbol added: _ZTINSt3__13pmr25monotonic_buffer_resourceE
+  Symbol added: _ZTINSt3__13pmr26__null_memory_resource_impE
+  Symbol added: _ZTINSt3__13pmr26synchronized_pool_resourceE
+  Symbol added: _ZTINSt3__13pmr28unsynchronized_pool_resourceE
+  Symbol added: _ZTINSt3__13pmr32__new_delete_memory_resource_impE
+  Symbol added: _ZTSNSt3__13pmr15memory_resourceE
+  Symbol added: _ZTSNSt3__13pmr25monotonic_buffer_resourceE
+  Symbol added: _ZTSNSt3__13pmr26__null_memory_resource_impE
+  Symbol added: _ZTSNSt3__13pmr26synchronized_pool_resourceE
+  Symbol added: _ZTSNSt3__13pmr28unsynchronized_pool_resourceE
+  Symbol added: _ZTSNSt3__13pmr32__new_delete_memory_resource_impE
+  Symbol added: _ZTVNSt3__13pmr25monotonic_buffer_resourceE
+  Symbol added: _ZTVNSt3__13pmr26synchronized_pool_resourceE
+  Symbol added: _ZTVNSt3__13pmr28unsynchronized_pool_resourceE
+
+------------
+Version 15.0
+------------
+
+* f1c30135417f - [libc++] Drop the legacy debug mode symbols by default
+
+  This commit removed symbols implementing debug mode in the non-debug
+  configuration of the library. Using the debug mode now requires a
+  differently-configured version of libc++. This is technically an ABI
+  break, however any user having been using the debug mode support previously
+  was already at risk of non-benign ODR violations, and in practice we
+  never found it to work reliably.
+
+  All platforms
+  -------------
+  Symbol removed: _ZNKSt3__111__libcpp_db15__decrementableEPKv
+  Symbol removed: _ZNKSt3__111__libcpp_db15__find_c_from_iEPv
+  Symbol removed: _ZNKSt3__111__libcpp_db15__subscriptableEPKvl
+  Symbol removed: _ZNKSt3__111__libcpp_db17__dereferenceableEPKv
+  Symbol removed: _ZNKSt3__111__libcpp_db17__find_c_and_lockEPv
+  Symbol removed: _ZNKSt3__111__libcpp_db22__less_than_comparableEPKvS2_
+  Symbol removed: _ZNKSt3__111__libcpp_db6unlockEv
+  Symbol removed: _ZNKSt3__111__libcpp_db8__find_cEPv
+  Symbol removed: _ZNKSt3__111__libcpp_db9__addableEPKvl
+  Symbol removed: _ZNKSt3__119__libcpp_debug_info4whatEv
+  Symbol removed: _ZNSt3__111__libcpp_db10__insert_cEPvPFPNS_8__c_nodeES1_S1_S3_E
+  Symbol removed: _ZNSt3__111__libcpp_db10__insert_iEPv
+  Symbol removed: _ZNSt3__111__libcpp_db11__insert_icEPvPKv
+  Symbol removed: _ZNSt3__111__libcpp_db15__iterator_copyEPvPKv
+  Symbol removed: _ZNSt3__111__libcpp_db16__invalidate_allEPv
+  Symbol removed: _ZNSt3__111__libcpp_db4swapEPvS1_
+  Symbol removed: _ZNSt3__111__libcpp_db9__erase_cEPv
+  Symbol removed: _ZNSt3__111__libcpp_db9__erase_iEPv
+  Symbol removed: _ZNSt3__111__libcpp_dbC1Ev
+  Symbol removed: _ZNSt3__111__libcpp_dbC2Ev
+  Symbol removed: _ZNSt3__111__libcpp_dbD1Ev
+  Symbol removed: _ZNSt3__111__libcpp_dbD2Ev
+  Symbol removed: _ZNSt3__114__get_const_dbEv
+  Symbol removed: _ZNSt3__123__libcpp_debug_functionE
+  Symbol removed: _ZNSt3__127__libcpp_set_debug_functionEPFvRKNS_19__libcpp_debug_infoEE
+  Symbol removed: _ZNSt3__129__libcpp_abort_debug_functionERKNS_19__libcpp_debug_infoE
+  Symbol removed: _ZNSt3__18__c_node5__addEPNS_8__i_nodeE
+  Symbol removed: _ZNSt3__18__c_nodeD0Ev
+  Symbol removed: _ZNSt3__18__c_nodeD1Ev
+  Symbol removed: _ZNSt3__18__c_nodeD2Ev
+  Symbol removed: _ZNSt3__18__get_dbEv
+  Symbol removed: _ZNSt3__18__i_nodeD1Ev
+  Symbol removed: _ZNSt3__18__i_nodeD2Ev
+  Symbol removed: _ZTINSt3__18__c_nodeE
+  Symbol removed: _ZTSNSt3__18__c_nodeE
+  Symbol removed: _ZTVNSt3__18__c_nodeE
+
+* b0fd9497af6d, 7de5aca84c54 and 507125af3d0b - [libc++] Add a lightweight overridable assertion handler
+
+  This patch adds a lightweight assertion handler mechanism that can be
+  overriden at link-time in a fashion similar to `operator new`. A default
+  assertion handler is provided in the shared library, hence the added
+  symbol.
+
+  All platforms
+  -------------
+  Symbol added: _ZNSt3__122__libcpp_verbose_abortEPKcz
+
+------------
+Version 14.0
+------------
+
+* abb5dd6e99df - [libc++] `to_chars` for floating point.
+
+  This commit added the `to_chars` implementation for floating point values.
+  The entire implementation resides in the dylib and the functions specified
+  in the Standard are now part of the ABI.
+
+  All platforms
+  -------------
+  Symbol added: _ZNSt3__18to_charsEPcS0_d
+  Symbol added: _ZNSt3__18to_charsEPcS0_dNS_12chars_formatE
+  Symbol added: _ZNSt3__18to_charsEPcS0_dNS_12chars_formatEi
+  Symbol added: _ZNSt3__18to_charsEPcS0_e
+  Symbol added: _ZNSt3__18to_charsEPcS0_eNS_12chars_formatE
+  Symbol added: _ZNSt3__18to_charsEPcS0_eNS_12chars_formatEi
+  Symbol added: _ZNSt3__18to_charsEPcS0_f
+  Symbol added: _ZNSt3__18to_charsEPcS0_fNS_12chars_formatE
+  Symbol added: _ZNSt3__18to_charsEPcS0_fNS_12chars_formatEi
+
+* 049f6c29a6f0 - [libc++] Resolve missing table_size symbol
+
+  This commit added an out-of-line definition for `table_size` in the library.
+  This is not an ABI break since we are just adding a symbol to the library.
+  In fact, any program that would have attempted to refer to that symbol would
+  have previously failed to link.
+
+  x86_64-apple-apple-darwin
+  -------------------------
+  Symbol added: _ZNSt3__15ctypeIcE10table_sizeE
+
+  x86_64-unknown-linux-gnu
+  ------------------------
+  Symbol added: _ZNSt3__15ctypeIcE10table_sizeE
+
+* 434dc0a5bcae - [libc++] Always define a key function for std::bad_function_call in the dylib
+
+  This commit added a new explicit instantiation of std::bad_function_call's
+  vtable in the shared library. This change is not an ABI break as it only
+  adds symbols to the library. Programs compiled against the library will not
+  rely on the vtable being defined in it by default. Reliance on the vtable
+  being in the shared library can be enabled by defining the
+  _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION macro.
+
+  Note that this commit also causes the libc++ shared library to start relying
+  on std::exception::what() being provided. This is due to the fact that the
+  shared library now contains the vtable for std::bad_function_call, which
+  references std::exception::what(). This shouldn't be an issue since that
+  function needs to be available to users in order to use std::bad_function_call
+  before this patch too.
+
+  All platforms
+  -------------
+  Symbol added: _ZNSt3__117bad_function_callD0Ev
+  Symbol added: _ZNSt3__117bad_function_callD1Ev
+  Symbol added: _ZNSt3__117bad_function_callD2Ev
+  Symbol added: _ZTINSt3__117bad_function_callE
+  Symbol added: _ZTSNSt3__117bad_function_callE
+  Symbol added: _ZTVNSt3__117bad_function_callE
+
+  <arch>-unknown-linux-gnu
+  ------------------------
+  Added dependency on symbol: _ZNKSt9exception4whatEv
+
+------------
+Version 12.0
+------------
+
+* a984dcaf7c21 - [libc++] [P0482] [C++20] Implement missing bits for codecvt and codecvt_byname.
+
+  This commit added new instantiations with char8_t for classes codecvt and
+  codecvt_byname in <locale> in the library.
+
+  All platforms
+  -------------
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE10do_unshiftERS1_PDuS4_RS4_
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE11do_encodingEv
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE13do_max_lengthEv
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE16do_always_noconvEv
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE5do_inERS1_PKDuS5_RS5_PDiS7_RS7_
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE6do_outERS1_PKDiS5_RS5_PDuS7_RS7_
+  Symbol added: _ZNKSt3__17codecvtIDiDu11__mbstate_tE9do_lengthERS1_PKDuS5_m
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE10do_unshiftERS1_PDuS4_RS4_
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE11do_encodingEv
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE13do_max_lengthEv
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE16do_always_noconvEv
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE5do_inERS1_PKDuS5_RS5_PDsS7_RS7_
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE6do_outERS1_PKDsS5_RS5_PDuS7_RS7_
+  Symbol added: _ZNKSt3__17codecvtIDsDu11__mbstate_tE9do_lengthERS1_PKDuS5_m
+  Symbol added: _ZNSt3__114codecvt_bynameIDiDu11__mbstate_tED0Ev
+  Symbol added: _ZNSt3__114codecvt_bynameIDiDu11__mbstate_tED1Ev
+  Symbol added: _ZNSt3__114codecvt_bynameIDiDu11__mbstate_tED2Ev
+  Symbol added: _ZNSt3__114codecvt_bynameIDsDu11__mbstate_tED0Ev
+  Symbol added: _ZNSt3__114codecvt_bynameIDsDu11__mbstate_tED1Ev
+  Symbol added: _ZNSt3__114codecvt_bynameIDsDu11__mbstate_tED2Ev
+  Symbol added: _ZNSt3__17codecvtIDiDu11__mbstate_tE2idE
+  Symbol added: _ZNSt3__17codecvtIDiDu11__mbstate_tED0Ev
+  Symbol added: _ZNSt3__17codecvtIDiDu11__mbstate_tED1Ev
+  Symbol added: _ZNSt3__17codecvtIDiDu11__mbstate_tED2Ev
+  Symbol added: _ZNSt3__17codecvtIDsDu11__mbstate_tE2idE
+  Symbol added: _ZNSt3__17codecvtIDsDu11__mbstate_tED0Ev
+  Symbol added: _ZNSt3__17codecvtIDsDu11__mbstate_tED1Ev
+  Symbol added: _ZNSt3__17codecvtIDsDu11__mbstate_tED2Ev
+  Symbol added: _ZTINSt3__114codecvt_bynameIDiDu11__mbstate_tEE
+  Symbol added: _ZTINSt3__114codecvt_bynameIDsDu11__mbstate_tEE
+  Symbol added: _ZTINSt3__17codecvtIDiDu11__mbstate_tEE
+  Symbol added: _ZTINSt3__17codecvtIDsDu11__mbstate_tEE
+  Symbol added: _ZTSNSt3__17codecvtIDiDu11__mbstate_tEE
+  Symbol added: _ZTSNSt3__17codecvtIDsDu11__mbstate_tEE
+  Symbol added: _ZTVNSt3__114codecvt_bynameIDiDu11__mbstate_tEE
+  Symbol added: _ZTVNSt3__114codecvt_bynameIDsDu11__mbstate_tEE
+  Symbol added: _ZTVNSt3__17codecvtIDiDu11__mbstate_tEE
+  Symbol added: _ZTVNSt3__17codecvtIDsDu11__mbstate_tEE
+
+  <arch>-unknown-linux-gnu
+  ------------------------
+  Symbol added: _ZTSNSt3__114codecvt_bynameIDiDu11__mbstate_tEE
+  Symbol added: _ZTSNSt3__114codecvt_bynameIDsDu11__mbstate_tEE
+
+* 997d41cdec53 - [libc++] Instantiate additional <iostream> members in the dylib
+
+  This commit added new explicit instantiations for classes in <iostream> in
+  the library. This was done after noticing that many programs that used streams
+  ended up containing weak definitions of these classes, which has a negative
+  impact on both code size and load times. This change is not an ABI break,
+  since we are just adding additional symbols.
+
+  All platforms
+  -------------
+  Symbol added: _ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE11__read_modeEv
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE12__write_modeEv
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4openEPKcj
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4swapERS3_
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4syncEv
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE5closeEv
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE5imbueERKNS_6localeE
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE6setbufEPcl
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE7seekoffExNS_8ios_base7seekdirEj
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE7seekposENS_4fposI11__mbstate_tEEj
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE8overflowEi
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE9pbackfailEi
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE9underflowEv
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC1EOS3_
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC1Ev
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC2EOS3_
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC2Ev
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED0Ev
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED1Ev
+  Symbol added: _ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED2Ev
+  Symbol added: _ZNSt3__114basic_ifstreamIcNS_11char_traitsIcEEE4openEPKcj
+  Symbol added: _ZNSt3__114basic_ifstreamIcNS_11char_traitsIcEEE4openERKNS_12basic_stringIcS2_NS_9allocatorIcEEEEj
+  Symbol added: _ZNSt3__114basic_ofstreamIcNS_11char_traitsIcEEE4openEPKcj
+  Symbol added: _ZNSt3__114basic_ofstreamIcNS_11char_traitsIcEEE4openERKNS_12basic_stringIcS2_NS_9allocatorIcEEEEj
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strERKNS_12basic_stringIcS2_S4_EE
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE4swapERS5_
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE7seekoffExNS_8ios_base7seekdirEj
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE8overflowEi
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE9pbackfailEi
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE9underflowEv
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEC1EOS5_
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEC2EOS5_
+  Symbol added: _ZNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_
+  Symbol added: _ZNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_
+  Symbol added: _ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_
+  Symbol added: _ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_
+  Symbol added: _ZTCNSt3__114basic_ifstreamIcNS_11char_traitsIcEEEE0_NS_13basic_istreamIcS2_EE
+  Symbol added: _ZTCNSt3__114basic_ofstreamIcNS_11char_traitsIcEEEE0_NS_13basic_ostreamIcS2_EE
+  Symbol added: _ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_13basic_istreamIcS2_EE
+  Symbol added: _ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_14basic_iostreamIcS2_EE
+  Symbol added: _ZTCNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE16_NS_13basic_ostreamIcS2_EE
+  Symbol added: _ZTCNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_13basic_istreamIcS2_EE
+  Symbol added: _ZTCNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE0_NS_13basic_ostreamIcS2_EE
+  Symbol added: _ZTINSt3__113basic_filebufIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTINSt3__114basic_ifstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTINSt3__114basic_ofstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTINSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTINSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTINSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTINSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTSNSt3__113basic_filebufIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTSNSt3__114basic_ifstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTSNSt3__114basic_ofstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTSNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTSNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTSNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTSNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTTNSt3__114basic_ifstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTTNSt3__114basic_ofstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTTNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTTNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTTNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTVNSt3__113basic_filebufIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTVNSt3__114basic_ifstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTVNSt3__114basic_ofstreamIcNS_11char_traitsIcEEEE
+  Symbol added: _ZTVNSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTVNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTVNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+  Symbol added: _ZTVNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE
+
+* 9b40ee8eb0c1 - [libc++] Define new/delete in libc++abi only by default
+
+  By default, libc++ does not include the definition for new and delete anymore.
+  Those were previously defined in both libc++ and libc++abi, which was an
+  ODR violation.
+
+  <arch>-apple-apple-darwin
+  -------------------------
+  The following symbols are now re-exported from libc++abi instead of exported
+  by libc++ directly (this should not be an ABI break):
+
+  Symbol moved: __ZdaPv
+  Symbol moved: __ZdaPvm
+  Symbol moved: __ZdaPvmSt11align_val_t
+  Symbol moved: __ZdaPvRKSt9nothrow_t
+  Symbol moved: __ZdaPvSt11align_val_t
+  Symbol moved: __ZdaPvSt11align_val_tRKSt9nothrow_t
+  Symbol moved: __ZdlPv
+  Symbol moved: __ZdlPvm
+  Symbol moved: __ZdlPvmSt11align_val_t
+  Symbol moved: __ZdlPvRKSt9nothrow_t
+  Symbol moved: __ZdlPvSt11align_val_t
+  Symbol moved: __ZdlPvSt11align_val_tRKSt9nothrow_t
+  Symbol moved: __Znam
+  Symbol moved: __ZnamRKSt9nothrow_t
+  Symbol moved: __ZnamSt11align_val_t
+  Symbol moved: __ZnamSt11align_val_tRKSt9nothrow_t
+  Symbol moved: __Znwm
+  Symbol moved: __ZnwmRKSt9nothrow_t
+  Symbol moved: __ZnwmSt11align_val_t
+  Symbol moved: __ZnwmSt11align_val_tRKSt9nothrow_t
+
+  <arch>-unknown-linux-gnu
+  ------------------------
+  The following symbols were moved to libc++abi, but are NOT being re-exported
+  by libc++. This constitutes an ABI break if one links against libc++ but
+  not libc++abi.
+
+  Symbol moved: _ZdaPv
+  Symbol moved: _ZdaPvm
+  Symbol moved: _ZdaPvmSt11align_val_t
+  Symbol moved: _ZdaPvRKSt9nothrow_t
+  Symbol moved: _ZdaPvSt11align_val_t
+  Symbol moved: _ZdaPvSt11align_val_tRKSt9nothrow_t
+  Symbol moved: _ZdlPv
+  Symbol moved: _ZdlPvm
+  Symbol moved: _ZdlPvmSt11align_val_t
+  Symbol moved: _ZdlPvRKSt9nothrow_t
+  Symbol moved: _ZdlPvSt11align_val_t
+  Symbol moved: _ZdlPvSt11align_val_tRKSt9nothrow_t
+  Symbol moved: _Znam
+  Symbol moved: _ZnamRKSt9nothrow_t
+  Symbol moved: _ZnamSt11align_val_t
+  Symbol moved: _ZnamSt11align_val_tRKSt9nothrow_t
+  Symbol moved: _Znwm
+  Symbol moved: _ZnwmRKSt9nothrow_t
+  Symbol moved: _ZnwmSt11align_val_t
+  Symbol moved: _ZnwmSt11align_val_tRKSt9nothrow_t
+
+* 4f13b9992971 - [libc++] Simplify how we re-export symbols from libc++abi
+
+  We re-export some symbols that were exported from libc++abi but not from
+  libc++. Exporting new symbols is not an ABI break.
+
+  x86_64-apple-apple-darwin
+  -------------------------
+  Symbol added: ___cxa_allocate_dependent_exception
+  Symbol added: ___cxa_free_dependent_exception
+
+------------
+Version 10.0
+------------
+
+* 54fa9ecd3088 - [libc++] Implementation of C++20's P1135R6 for libcxx
+
+  libc++ now implements P1135R6 (The C++20 Synchronization Library), which
+  adds a few symbols to the dylib. This is backwards-compatible since we're
+  just adding new symbols.
+
+  x86_64-unknown-linux-gnu
+  ------------------------
+  TODO
+
+  <arch>-apple-apple-darwin
+  -------------------------
+  Symbol added: __ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEEx
+  Symbol added: __ZNSt3__120__libcpp_atomic_waitEPVKvx
+  Symbol added: __ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE
+  Symbol added: __ZNSt3__123__cxx_atomic_notify_allEPVKv
+  Symbol added: __ZNSt3__123__cxx_atomic_notify_oneEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE
+  Symbol added: __ZNSt3__123__cxx_atomic_notify_oneEPVKv
+  Symbol added: __ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE
+  Symbol added: __ZNSt3__123__libcpp_atomic_monitorEPVKv
+  Symbol added: __ZNSt3__131__arrive_barrier_algorithm_baseEPNS_24__barrier_algorithm_baseEh
+  Symbol added: __ZNSt3__132__destroy_barrier_algorithm_baseEPNS_24__barrier_algorithm_baseE
+  Symbol added: __ZNSt3__134__construct_barrier_algorithm_baseERl
+
+-----------
+Version 9.0
+-----------
+
+* r358690 - Re-rexport missing symbols from libc++abi
+
+  libc++ now re-exports `__cxa_throw_bad_array_new_length` and `__cxa_uncaught_exceptions`,
+  both of which are provided by libc++abi. This is not an ABI break because
+  we're just adding symbols. Also, this does mean that libc++ can't be linked
+  against an older version of libc++abi that doesn't provide those symbols,
+  however doing so is not supported anyway.
+
+  x86_64-unknown-linux-gnu
+  ------------------------
+  TODO
+
+  x86_64-apple-apple-darwin
+  -------------------------
+  Symbol added: ___cxa_throw_bad_array_new_length
+  Symbol added: ___cxa_uncaught_exceptions
+
+* r356518 - Integrate <filesystem> support into the shared library
+
+  This patch introduces support for <filesystem> into the shared library,
+  instead of requiring users to manually link against a static archive. As
+  such, new symbols required to implement <filesystem> are exported from
+  the shared library.
+
+  All platforms
+  -------------
+  Symbol added: _ZNKSt3__14__fs10filesystem18directory_iterator13__dereferenceEv
+  Symbol added: _ZNKSt3__14__fs10filesystem28recursive_directory_iterator13__dereferenceEv
+  Symbol added: _ZNKSt3__14__fs10filesystem28recursive_directory_iterator5depthEv
+  Symbol added: _ZNKSt3__14__fs10filesystem28recursive_directory_iterator7optionsEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path10__filenameEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path11__extensionEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path11__root_nameEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path13__parent_pathEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path15__relative_pathEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path15__root_path_rawEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path16__root_directoryEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path16lexically_normalEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path18lexically_relativeERKS2_
+  Symbol added: _ZNKSt3__14__fs10filesystem4path3endEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path5beginEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path6__stemEv
+  Symbol added: _ZNKSt3__14__fs10filesystem4path9__compareENS_17basic_string_viewIcNS_11char_traitsIcEEEE
+  Symbol added: _ZNSt3__14__fs10filesystem10__absoluteERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem10hash_valueERKNS1_4pathE
+  Symbol added: _ZNSt3__14__fs10filesystem11__canonicalERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem11__copy_fileERKNS1_4pathES4_NS1_12copy_optionsEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem11__file_sizeERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem12__equivalentERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem12__remove_allERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem13__fs_is_emptyERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem13__permissionsERKNS1_4pathENS1_5permsENS1_12perm_optionsEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem13__resize_fileERKNS1_4pathEmPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem14__copy_symlinkERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem14__current_pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem14__current_pathERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem14__read_symlinkERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem15directory_entry12__do_refreshEv
+  Symbol added: _ZNSt3__14__fs10filesystem16__create_symlinkERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem16__symlink_statusERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem16_FilesystemClock3nowEv
+  Symbol added: _ZNSt3__14__fs10filesystem16_FilesystemClock9is_steadyE
+  Symbol added: _ZNSt3__14__fs10filesystem16filesystem_error13__create_whatEi
+  Symbol added: _ZNSt3__14__fs10filesystem16filesystem_errorD0Ev
+  Symbol added: _ZNSt3__14__fs10filesystem16filesystem_errorD1Ev
+  Symbol added: _ZNSt3__14__fs10filesystem16filesystem_errorD2Ev
+  Symbol added: _ZNSt3__14__fs10filesystem17__hard_link_countERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem17__last_write_timeERKNS1_4pathENS_6chrono10time_pointINS1_16_FilesystemClockENS5_8durationInNS_5ratioILl1ELl1000000000EEEEEEEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem17__last_write_timeERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem18__create_directoryERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem18__create_directoryERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem18__create_hard_linkERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem18__weakly_canonicalERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem18directory_iterator11__incrementEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem18directory_iteratorC1ERKNS1_4pathEPNS_10error_codeENS1_17directory_optionsE
+  Symbol added: _ZNSt3__14__fs10filesystem18directory_iteratorC2ERKNS1_4pathEPNS_10error_codeENS1_17directory_optionsE
+  Symbol added: _ZNSt3__14__fs10filesystem20__create_directoriesERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem21__temp_directory_pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem26__create_directory_symlinkERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem28recursive_directory_iterator11__incrementEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem28recursive_directory_iterator15__try_recursionEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem28recursive_directory_iterator5__popEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem28recursive_directory_iterator9__advanceEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem28recursive_directory_iteratorC1ERKNS1_4pathENS1_17directory_optionsEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem28recursive_directory_iteratorC2ERKNS1_4pathENS1_17directory_optionsEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem4path17replace_extensionERKS2_
+  Symbol added: _ZNSt3__14__fs10filesystem4path19preferred_separatorE
+  Symbol added: _ZNSt3__14__fs10filesystem4path8iterator11__decrementEv
+  Symbol added: _ZNSt3__14__fs10filesystem4path8iterator11__incrementEv
+  Symbol added: _ZNSt3__14__fs10filesystem6__copyERKNS1_4pathES4_NS1_12copy_optionsEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem7__spaceERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem8__removeERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem8__renameERKNS1_4pathES4_PNS_10error_codeE
+  Symbol added: _ZNSt3__14__fs10filesystem8__statusERKNS1_4pathEPNS_10error_codeE
+  Symbol added: _ZTINSt3__14__fs10filesystem16filesystem_errorE
+  Symbol added: _ZTSNSt3__14__fs10filesystem16filesystem_errorE
+  Symbol added: _ZTVNSt3__14__fs10filesystem16filesystem_errorE
+
+* r356417 - Remove exception throwing debug mode handler support.
+
+  The reason libc++ implemented a throwing debug mode handler was for ease of testing. Specifically,
+  I thought that if a debug violation aborted, we could only test one violation per file. This made
+  it impossible to test debug mode. Which throwing behavior we could test more!
+
+  However, the throwing approach didn't work either, since there are debug violations underneath noexcept
+  functions. This lead to the introduction of `_NOEXCEPT_DEBUG`, which was only noexcept when debug
+  mode was off.
+
+  Having thought more and having grown wiser, `_NOEXCEPT_DEBUG` was a horrible decision. It was
+  viral, it didn't cover all the cases it needed to, and it was observable to the user -- at worst
+  changing the behavior of their program.
+
+  This patch removes the throwing debug handler, and rewrites the debug tests using 'fork-ing' style
+  death tests.
+
+  All Platforms (ignoring versioning namespaces)
+  ----------------------------------------------
+  Symbol added: _ZNKSt3__119__libcpp_debug_info4whatEv
+  Symbol removed: _ZNKSt3__124__libcpp_debug_exception4whatEv
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionC1ERKNS_19__libcpp_debug_infoE
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionC1ERKS0_
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionC1Ev
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionC2ERKNS_19__libcpp_debug_infoE
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionC2ERKS0_
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionC2Ev
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionD0Ev
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionD1Ev
+  Symbol removed: _ZNSt3__124__libcpp_debug_exceptionD2Ev
+  Symbol removed: _ZNSt3__129__libcpp_throw_debug_functionERKNS_19__libcpp_debug_infoE
+  Symbol removed: _ZTINSt3__124__libcpp_debug_exceptionE
+  Symbol removed: _ZTSNSt3__124__libcpp_debug_exceptionE
+  Symbol removed: _ZTVNSt3__124__libcpp_debug_exceptionE
+
+
+    x86_64-apple-apple-darwin
+    -------------------------
+    Symbol added: __ZNSt3__111__libcpp_db10__insert_cEPvPFPNS_8__c_nodeES1_S1_S3_E
+    Symbol removed: __ZNSt3__111__libcpp_db10__insert_cEPv
+
+* r355367 - Fix -fsanitize=vptr badness in <__debug>
+
+  This patch fixes a lifetime bug when inserting a new container into the debug database. It is
+  diagnosed by UBSAN when debug mode is enabled. This patch corrects how nodes are constructed
+  during insertion.
+
+  The fix requires unconditionally breaking the debug mode ABI. Users should not expect ABI
+  stability from debug mode.
+
+  All platforms
+  -------------
+  Symbol added: _ZNSt3__111__libcpp_db10__insert_cEPvPFPNS_8__c_nodeES1_S1_S3_E
+  Symbol removed: _ZNSt3__111__libcpp_db10__insert_cEPv
+
+-----------
+Version 8.0
+-----------
+
+* r347903 - Remove std::bad_array_length
+
+  The change removes the definition of std::bad_array_length (which never made
+  it into the standard) from the headers and the dylib. This is technically an
+  ABI break because the symbols are shipped starting with mac OSX 10.13, however
+  users couldn't be relying on the functionality because it is marked as being
+  unavailable using Clang's availability attribute.
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  Symbol removed: __ZNKSt16bad_array_length4whatEv
+  Symbol removed: __ZNKSt16bad_array_length4whatEv
+  Symbol removed: __ZNSt16bad_array_lengthC1Ev
+  Symbol removed: __ZNSt16bad_array_lengthC1Ev
+  Symbol removed: __ZNSt16bad_array_lengthC2Ev
+  Symbol removed: __ZNSt16bad_array_lengthC2Ev
+  Symbol removed: __ZNSt16bad_array_lengthD0Ev
+  Symbol removed: __ZNSt16bad_array_lengthD0Ev
+  Symbol removed: __ZNSt16bad_array_lengthD1Ev
+  Symbol removed: __ZNSt16bad_array_lengthD1Ev
+  Symbol removed: __ZNSt16bad_array_lengthD2Ev
+  Symbol removed: __ZNSt16bad_array_lengthD2Ev
+  Symbol removed: __ZTISt16bad_array_length
+  Symbol removed: __ZTISt16bad_array_length
+  Symbol removed: __ZTSSt16bad_array_length
+  Symbol removed: __ZTSSt16bad_array_length
+  Symbol removed: __ZTVSt16bad_array_length
+  Symbol removed: __ZTVSt16bad_array_length
+
+* r347395 - Making libc++ build under -fvisibility=hidden on Linux
+
+  The change marks several function templates as hidden. This removes symbols
+  from the shared library, but this is not an ABI break because it's impossible
+  for programs linking against libc++.so to actually depend on that symbol.
+  The reason is that the symbol is exported from the shared library through
+  an implicit instantiation present in the shared object itself only. Furthermore,
+  if a user's shared object was implicitly instantiating one of these functions,
+  marking that symbol as hidden would not be an ABI break for them because none
+  of their users could actually be using the symbol in their dylib (because
+  it's an implicit instantiation).
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol removed: _ZNSt3__125__num_get_signed_integralIlEET_PKcS3_Rji
+  Symbol removed: _ZNSt3__125__num_get_signed_integralIxEET_PKcS3_Rji
+  Symbol removed: _ZNSt3__127__num_get_unsigned_integralIjEET_PKcS3_Rji
+  Symbol removed: _ZNSt3__127__num_get_unsigned_integralImEET_PKcS3_Rji
+  Symbol removed: _ZNSt3__127__num_get_unsigned_integralItEET_PKcS3_Rji
+  Symbol removed: _ZNSt3__127__num_get_unsigned_integralIyEET_PKcS3_Rji
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIaaEEPaEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIccEEPcEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIddEEPdEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIffEEPfEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIhhEEPhEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIiiEEPiEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIjjEEPjEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIllEEPlEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessImmEEPmEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIssEEPsEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIttEEPtEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIwwEEPwEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIxxEEPxEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__17__sort5IRNS_6__lessIyyEEPyEEjT0_S5_S5_S5_S5_T_
+  Symbol removed: _ZNSt3__1plIcNS_11char_traitsIcEENS_9allocatorIcEEEENS_12basic_stringIT_T0_T1_EERKS9_PKS6_
+  Symbol removed: _ZSt18make_exception_ptrINSt3__112future_errorEESt13exception_ptrT_
+
+* r345260 - Making libc++ build under -fvisibility=hidden on Mac OS
+
+  The change marks __thread_specific_ptr<__thread_struct>::__at_thread_exit(void*)
+  with hidden visibility. This removes a symbol from the shared libraries,
+  however this is not an ABI break because it's impossible for programs linking
+  against libc++.dylib to actually depend on that symbol. The reason is that
+  the symbol is exported from the shared library through an implicit
+  instantiation present in the dylib itself only. Furthermore, if a user's
+  dylib was implicitly instantiating __thread_specific_ptr<T>::__at_thread_exit
+  (because it's defined in the headers), marking that symbol as hidden would
+  not be an ABI break for them because none of their users could actually be
+  using the symbol in their dylib (because it's an implicit instantiation).
+
+  This change also marks __start_std_streams as hidden -- this variable is
+  only required to initialize the streams, and nobody should depend on it
+  from outside the dylib.
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol removed: _ZNSt3__121__thread_specific_ptrINS_15__thread_structEE16__at_thread_exitEPv
+  Symbol removed: _ZNSt3__119__start_std_streamsE
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  Symbol removed: __ZNSt3__221__thread_specific_ptrINS_15__thread_structEE16__at_thread_exitEPv
+  Symbol removed: __ZNSt3__119__start_std_streamsE
+
+-----------
+Version 7.0
+-----------
+
+* r338479 - Elementary string conversions for integral types
+
+  The change emits __u64toa and __u32toa under std::__1::__itoa.
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol added: _ZNSt3__16__itoa8__u64toaEmPc
+  Symbol added: _ZNSt3__16__itoa8__u32toaEjPc
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  Symbol added: __ZNSt3__16__itoa8__u64toaEyPc
+  Symbol added: __ZNSt3__16__itoa8__u32toaEjPc
+
+
+* r333467 - Fix embarrasing typo in uncaught_exceptions.
+
+  This bug caused __uncaught_exception to be ODR used instead of
+  __uncaught_exceptions. This change is non-ABI breaking because the symbols
+  for std::uncaught_exception and std::uncaught_exceptions haven't changed,
+  and because users shouldn't be depending directly on libc++ exporting
+  __uncaught_exception/__uncaught_exceptions.
+
+  All Platforms
+  ----------------
+  Symbol removed: __cxa_uncaught_exception
+  Symbol added: __cxa_uncaught_exceptions
+
+-----------
+Version 5.0
+-----------
+
+* r313500 - Fix undefined "___cxa_deleted_virtual" symbol in macosx
+
+  x86_64-linux-gnu
+  ----------------
+  No changes
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  Symbol added: ___cxa_deleted_virtual
+
+* r296729 - Remove std::num_get template methods which should be inline
+
+  These functions should never have had visible definitions in the dylib but
+  since they were previously not specified with 'inline' they accidentally
+  got emitted. This change is non-ABI breaking because every "linkage unit"
+  must contain its own definition.
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE15__do_get_signedIlEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE15__do_get_signedIxEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE17__do_get_unsignedIjEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE17__do_get_unsignedImEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE17__do_get_unsignedItEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE17__do_get_unsignedIyEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE23__do_get_floating_pointIdEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE23__do_get_floating_pointIeEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE23__do_get_floating_pointIfEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE15__do_get_signedIlEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE15__do_get_signedIxEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE17__do_get_unsignedIjEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE17__do_get_unsignedImEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE17__do_get_unsignedItEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE17__do_get_unsignedIyEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE23__do_get_floating_pointIdEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE23__do_get_floating_pointIeEES4_S4_S4_RNS_8ios_baseERjRT_
+  Symbol removed: _ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE23__do_get_floating_pointIfEES4_S4_S4_RNS_8ios_baseERjRT_
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  No changes
+
+-----------
+Version 4.0
+-----------
+
+* r290651 - Add _LIBCPP_ASSERT debug handling functions
+
+  All Platforms
+  -------------
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionC2ERKNS_19__libcpp_debug_infoE
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionD1Ev
+  Symbol added: _ZTINSt3__124__libcpp_debug_exceptionE
+  Symbol added: _ZNSt3__129__libcpp_throw_debug_functionERKNS_19__libcpp_debug_infoE
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionD2Ev
+  Symbol added: _ZNSt3__129__libcpp_abort_debug_functionERKNS_19__libcpp_debug_infoE
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionC2ERKS0_
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionC1Ev
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionC1ERKNS_19__libcpp_debug_infoE
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionC2Ev
+  Symbol added: _ZTSNSt3__124__libcpp_debug_exceptionE
+  Symbol added: _ZNSt3__123__libcpp_debug_functionE
+  Symbol added: _ZNKSt3__124__libcpp_debug_exception4whatEv
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionC1ERKS0_
+  Symbol added: _ZNSt3__124__libcpp_debug_exceptionD0Ev
+  Symbol added: _ZTVNSt3__124__libcpp_debug_exceptionE
+  Symbol added: _ZNSt3__127__libcpp_set_debug_functionEPFvRKNS_19__libcpp_debug_infoEE
+
+* r288547 - Implement C++17 <variant>
+
+  All Platforms
+  -------------
+  Symbol added: _ZTVSt18bad_variant_access
+  Symbol added: _ZTISt18bad_variant_access
+  Symbol added: _ZTSSt18bad_variant_access
+  Symbol added: _ZNKSt18bad_variant_access4whatEv
+
+* r285537 - Remove std::string::append template methods which should be inline
+
+  These functions should never have had visible definitions in the dylib but
+  since they were previously not specified with 'inline' they accidentally
+  got emitted. This change is non-ABI breaking because every "linkage unit"
+  must contain its own definition.
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol removed: _ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendIPcEENS_9enable_ifIXaasr21__is_forward_iteratorIT_EE5valuesr38__libcpp_string_gets_noexcept_iteratorIS9_EE5valueERS5_E4typeES9_S9_
+  Symbol removed: _ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendIPwEENS_9enable_ifIXaasr21__is_forward_iteratorIT_EE5valuesr38__libcpp_string_gets_noexcept_iteratorIS9_EE5valueERS5_E4typeES9_S9_
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  No changes
+
+* r285101 - Add -fvisibility-inlines-hidden when building libc++.
+
+  Although this change removes symbols, it should still be non-ABI breaking
+  since all of the definitions removed are inline functions. For this reason
+  removing these symbols is safe because every "linkage unit" which uses these
+  functions will contain their own definition.
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol removed: _ZNSt12bad_any_castD0Ev
+  Symbol removed: _ZNSt12experimental15fundamentals_v112bad_any_castD0Ev
+  Symbol removed: _ZNSt3__114__codecvt_utf8IDiED0Ev
+  Symbol removed: _ZNSt3__114__codecvt_utf8IDsED0Ev
+  Symbol removed: _ZNSt3__114__codecvt_utf8IwED0Ev
+  Symbol removed: _ZNSt3__115__codecvt_utf16IDiLb0EED0Ev
+  Symbol removed: _ZNSt3__115__codecvt_utf16IDiLb1EED0Ev
+  Symbol removed: _ZNSt3__115__codecvt_utf16IDsLb0EED0Ev
+  Symbol removed: _ZNSt3__115__codecvt_utf16IDsLb1EED0Ev
+  Symbol removed: _ZNSt3__115__codecvt_utf16IwLb0EED0Ev
+  Symbol removed: _ZNSt3__115__codecvt_utf16IwLb1EED0Ev
+  Symbol removed: _ZNSt3__117__assoc_sub_stateD0Ev
+  Symbol removed: _ZNSt3__117__assoc_sub_stateD2Ev
+  Symbol removed: _ZNSt3__117__libcpp_sscanf_lEPKcP15__locale_structS1_z
+  Symbol removed: _ZNSt3__119__libcpp_asprintf_lEPPcP15__locale_structPKcz
+  Symbol removed: _ZNSt3__119__libcpp_snprintf_lEPcmP15__locale_structPKcz
+  Symbol removed: _ZNSt3__120__codecvt_utf8_utf16IDiED0Ev
+  Symbol removed: _ZNSt3__120__codecvt_utf8_utf16IDsED0Ev
+  Symbol removed: _ZNSt3__120__codecvt_utf8_utf16IwED0Ev
+
+  x86_64-apple-darwin16.0
+  -----------------------
+  No Changes - inline symbols are already hidden
+
+* r284206 - Implement C++17 aligned allocation in <new>
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol added: _ZdaPvSt11align_val_t
+  Symbol added: _ZdlPvSt11align_val_t
+  Symbol added: _ZnamSt11align_val_t
+  Symbol added: _ZdaPvmSt11align_val_t
+  Symbol added: _ZdlPvmSt11align_val_t
+  Symbol added: _ZdlPvSt11align_val_tRKSt9nothrow_t
+  Symbol added: _ZnwmSt11align_val_tRKSt9nothrow_t
+  Symbol added: _ZnamSt11align_val_tRKSt9nothrow_t
+  Symbol added: _ZdaPvSt11align_val_tRKSt9nothrow_t
+  Symbol added: _ZnwmSt11align_val_t
+
+* r283980 - Implement C++17 <optional>
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol added: _ZTISt19bad_optional_access
+  Symbol added: _ZNSt19bad_optional_accessD0Ev
+  Symbol added: _ZNSt19bad_optional_accessD1Ev
+  Symbol added: _ZNSt19bad_optional_accessD2Ev
+  Symbol added: _ZTVSt19bad_optional_access
+  Symbol added: _ZTSSt19bad_optional_access
+
+* r278310 - Implement C++17 <any>
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol added: _ZNKSt12bad_any_cast4whatEv
+  Symbol added: _ZNSt12bad_any_castD0Ev
+  Symbol added: _ZTISt12bad_any_cast
+  Symbol added: _ZTSSt12bad_any_cast
+  Symbol added: _ZTVSt12bad_any_cast
+
+* r295398 - Remove basic_string::insert and basic_string::replace template methods
+    which should be inline.
+
+  These functions should never have had visible definitions in the dylib but
+  since they were previously not specified with 'inline' they accidentally
+  got emitted. This change is non-ABI breaking because every "linkage unit"
+  must contain its own definition.
+
+  x86_64-linux-gnu
+  ----------------
+  Symbol removed: _ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertIPKcEENS_9enable_ifIXaasr21__is_forward_iteratorIT_EE5valuesr38__libcpp_string_gets_noexcept_iteratorISA_EE5valueENS_11__wrap_iterIPcEEE4typeENSB_IS8_EESA_SA_
+  Symbol removed: _ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceIPKcEENS_9enable_ifIXsr19__is_input_iteratorIT_EE5valueERS5_E4typeENS_11__wrap_iterIS8_EESF_SA_SA_
+  Symbol removed: _ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertIPKwEENS_9enable_ifIXaasr21__is_forward_iteratorIT_EE5valuesr38__libcpp_string_gets_noexcept_iteratorISA_EE5valueENS_11__wrap_iterIPwEEE4typeENSB_IS8_EESA_SA_
+  Symbol removed: _ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceIPKwEENS_9enable_ifIXsr19__is_input_iteratorIT_EE5valueERS5_E4typeENS_11__wrap_iterIS8_EESF_SA_SA_
diff --git a/app/src/main/cpp/libcxx/lib/abi/CMakeLists.txt b/app/src/main/cpp/libcxx/lib/abi/CMakeLists.txt
new file mode 100644
index 0000000..7c08bd0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/CMakeLists.txt
@@ -0,0 +1,80 @@
+
+# This function generates a "unique" identifier based on various properties
+# given as arguments. The idea is to encode all ABI-affecting properties
+# in that identifier, so that we can store ABI information and associate it
+# to a specific ABI configuration.
+#
+# Right now, this is done by using the ABI identifier as the filename containing
+# the list of symbols exported by libc++ for that configuration, however we could
+# make it more sophisticated if the number of ABI-affecting parameters grew.
+function(cxx_abi_list_identifier result triple abi_library abi_version unstable exceptions new_delete_in_libcxx)
+  set(abi_properties)
+
+  if ("${triple}" MATCHES "darwin")
+    # Ignore the major, minor, and patchlevel versions of darwin targets.
+    string(REGEX REPLACE "darwin[0-9]+\\.[0-9]+\\.[0-9]+" "darwin" triple "${triple}")
+  elseif("${triple}" MATCHES "freebsd")
+    # Ignore the major and minor versions of freebsd targets.
+    string(REGEX REPLACE "freebsd[0-9]+\\.[0-9]+" "freebsd" triple "${triple}")
+  endif()
+  list(APPEND abi_properties "${triple}")
+  list(APPEND abi_properties "${abi_library}")
+  list(APPEND abi_properties "v${abi_version}")
+  if (${unstable})
+    list(APPEND abi_properties "unstable")
+  else()
+    list(APPEND abi_properties "stable")
+  endif()
+  if (${exceptions})
+    list(APPEND abi_properties "exceptions")
+  else()
+    list(APPEND abi_properties "noexceptions")
+  endif()
+  if (${new_delete_in_libcxx})
+    list(APPEND abi_properties "new")
+  else()
+    list(APPEND abi_properties "nonew")
+  endif()
+
+  list(JOIN abi_properties "." tmp)
+  set(${result} "${tmp}" PARENT_SCOPE)
+endfunction()
+
+if (CMAKE_CXX_COMPILER_TARGET)
+  set(triple "${CMAKE_CXX_COMPILER_TARGET}")
+else()
+  set(triple "${LLVM_DEFAULT_TARGET_TRIPLE}")
+endif()
+cxx_abi_list_identifier(abi_list_identifier
+  "${triple}"
+  "${LIBCXX_CXX_ABI}"
+  "${LIBCXX_ABI_VERSION}"
+  "${LIBCXX_ABI_UNSTABLE}"
+  "${LIBCXX_ENABLE_EXCEPTIONS}"
+  "${LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS}"
+)
+
+if (TARGET cxx_shared)
+  set(abi_list_file "${CMAKE_CURRENT_SOURCE_DIR}/${abi_list_identifier}.abilist")
+
+  if (EXISTS "${abi_list_file}")
+    add_custom_target(check-cxx-abilist
+      "${Python3_EXECUTABLE}" "${LIBCXX_SOURCE_DIR}/utils/sym_diff.py"
+          --only-stdlib-symbols
+          --strict "${abi_list_file}"
+          $<TARGET_FILE:cxx_shared>
+      DEPENDS cxx_shared
+      COMMENT "Testing libc++'s exported symbols against the ABI list")
+  else()
+    message(STATUS "ABI list file not generated for configuration ${abi_list_identifier}, `check-cxx-abilist` will not be available.")
+  endif()
+
+  add_custom_target(generate-cxx-abilist
+    COMMAND "${Python3_EXECUTABLE}" "${LIBCXX_SOURCE_DIR}/utils/generate_abi_list.py"
+            --output "${abi_list_file}"
+            "$<TARGET_FILE:cxx_shared>"
+    DEPENDS cxx_shared
+    COMMENT "Generating the ABI list file for configuration ${abi_list_identifier}")
+else()
+  message(STATUS "Not building a shared library for libc++ -- the ABI list targets will not be available.")
+endif()
diff --git a/app/src/main/cpp/libcxx/lib/abi/README.TXT b/app/src/main/cpp/libcxx/lib/abi/README.TXT
new file mode 100644
index 0000000..32a2d33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/README.TXT
@@ -0,0 +1,9 @@
+This directory contains abi lists representing the symbols exported
+by the libc++ library. The lists are generated using libcxx/utils/generate_abi_list.py.
+
+Every time a symbol is added or removed from the libc++ library, each of the
+lists *MUST* be updated to reflect the changes. This can be done by using the
+`generate-cxx-abilist` CMake target.
+
+We do not keep an up-to-date ABI list for all the build configurations of libc++.
+Currently, only the default configuration on MacOS and Linux are supported.
diff --git a/app/src/main/cpp/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/app/src/main/cpp/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
new file mode 100644
index 0000000..774bf39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -0,0 +1,2550 @@
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+{'is_defined': False, 'name': '__ZNKSt11logic_error4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNKSt13bad_exception4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNKSt13runtime_error4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNKSt20bad_array_new_length4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNKSt8bad_cast4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNKSt9bad_alloc4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNKSt9exception4whatEv', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNSt10bad_typeidC1Ev', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNSt10bad_typeidC2Ev', 'type': 'U'}
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+{'is_defined': False, 'name': '__ZNSt11logic_errorD1Ev', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNSt11logic_errorD2Ev', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNSt11range_errorD0Ev', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNSt11range_errorD1Ev', 'type': 'U'}
+{'is_defined': False, 'name': '__ZNSt11range_errorD2Ev', 'type': 'U'}
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diff --git a/app/src/main/cpp/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/app/src/main/cpp/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
new file mode 100644
index 0000000..3323fd5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_tolowerEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_tolowerEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_toupperEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_toupperEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE11do_scan_notEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE5do_isEPKwS3_Pj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE5do_isEjw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE8do_widenEPKcS3_Pw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE8do_widenEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE9do_narrowEPKwS3_cPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE9do_narrowEwc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112strstreambuf6pcountEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__113random_device7entropyEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE5do_inERPcPKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE6do_outERPcPKDiS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE5do_inERPcPKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE5do_inERPcPKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE6do_outERPcPKwS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIcE10do_compareEPKcS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIcE12do_transformEPKcS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIwE10do_compareEPKwS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIwE12do_transformEPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114error_category10equivalentERKNS_10error_codeEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114error_category10equivalentEiRKNS_15error_conditionE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114error_category23default_error_conditionEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE5do_inERPcPKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE6do_outERPcPKDiS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115error_condition7messageEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__118__time_get_storageIcE15__do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__118__time_get_storageIwE15__do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__119__shared_weak_count13__get_deleterERKSt9type_info', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__XEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__cEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__rEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__xEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE7__am_pmEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE7__weeksEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE8__monthsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__XEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__cEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__rEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__xEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE7__am_pmEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE7__weeksEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE8__monthsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__vector_base_commonILb1EE20__throw_length_errorEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__vector_base_commonILb1EE20__throw_out_of_rangeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__121__basic_string_commonILb1EE20__throw_out_of_rangeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__123__match_any_but_newlineIcE6__execERNS_7__stateIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__123__match_any_but_newlineIwE6__execERNS_7__stateIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr26synchronized_pool_resource11do_is_equalERKNS0_15memory_resourceE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource12__pool_indexEmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource17__pool_block_sizeEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource22__log2_pool_block_sizeEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource7optionsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem18directory_iterator13__dereferenceEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem28recursive_directory_iterator13__dereferenceEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem28recursive_directory_iterator5depthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem28recursive_directory_iterator7optionsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path10__filenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path11__extensionEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path11__root_nameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path13__parent_pathEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path15__relative_pathEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path15__root_path_rawEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path16__root_directoryEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path16lexically_normalEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path18lexically_relativeERKS2_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path3endEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path5beginEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path6__stemEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path9__compareENS_17basic_string_viewIcNS_11char_traitsIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_tolowerEPcPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_tolowerEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_toupperEPcPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_toupperEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE8do_widenEPKcS3_Pc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE8do_widenEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE9do_narrowEPKcS3_cPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE9do_narrowEcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_scan_isEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_tolowerEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_tolowerEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_toupperEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_toupperEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE11do_scan_notEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE5do_isEPKwS3_Pj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE5do_isEjw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE8do_widenEPKcS3_Pw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE8do_widenEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE9do_narrowEPKwS3_cPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE9do_narrowEwc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16locale4nameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16locale9has_facetERNS0_2idE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16locale9use_facetERNS0_2idE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16localeeqERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE10do_unshiftERS1_PDuS4_RS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE5do_inERS1_PKDuS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE6do_outERS1_PKDiS5_RS5_PDuS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE9do_lengthERS1_PKDuS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE5do_inERS1_PKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE6do_outERS1_PKDiS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE10do_unshiftERS1_PDuS4_RS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE5do_inERS1_PKDuS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE6do_outERS1_PKDsS5_RS5_PDuS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE9do_lengthERS1_PKDuS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE5do_inERS1_PKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE6do_outERS1_PKDsS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE5do_inERS1_PKcS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE6do_outERS1_PKcS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE5do_inERS1_PKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE6do_outERS1_PKwS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18ios_base6getlocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE11do_truenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE12do_falsenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE11do_truenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE12do_falsenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC1EPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC1ERKNSt3__112basic_stringIcNS0_11char_traitsIcEENS0_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC1ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC2EPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC2ERKNSt3__112basic_stringIcNS0_11char_traitsIcEENS0_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC2ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_erroraSERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt12experimental19bad_optional_accessD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrC1ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrC2ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptrD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptraSERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_errorC1EPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_errorC1ERKNSt3__112basic_stringIcNS0_11char_traitsIcEENS0_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_errorC1ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_errorC2EPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_errorC2ERKNSt3__112basic_stringIcNS0_11char_traitsIcEENS0_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_errorC2ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13runtime_erroraSERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110__time_getD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5alphaE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5blankE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5cntrlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5digitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5graphE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5lowerE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5printE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base5upperE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110ctype_base6xdigitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111regex_errorC1ENS_15regex_constants10error_typeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutex4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112strstreambuf8overflowEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112system_errorC1ENS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIcED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIwE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIwED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIwED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIwED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutex4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutex6unlockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutexD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutexD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stoldERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEPm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stoldERKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEEPm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stollERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stollERKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stoulERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stoulERKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15wcerrE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15wclogE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15wcoutE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16__clocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16__itoa8__u32toaEjPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16__itoa8__u64toaEyPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12steady_clock3nowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12system_clock11from_time_tEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12system_clock3nowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12system_clock9to_time_tERKNS0_10time_pointIS1_NS0_8durationIxNS_5ratioILx1ELx1000000EEEEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16futureIvE3getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16futureIvEC1EPNS_17__assoc_sub_stateE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16futureIvEC2EPNS_17__assoc_sub_stateE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16futureIvED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16futureIvED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16gslice6__initEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale14__install_ctorERKS0_PNS0_5facetEl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale2id5__getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale2id6__initEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale2id9__next_idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale3allE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale4noneE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale4timeE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5ctypeE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5facet16__on_zero_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5facetD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5facetD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5facetD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale6globalERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale7classicEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale7collateE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale7numericE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale8__globalEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale8messagesE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale8monetaryE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1EPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1ERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1ERKS0_PKci', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1ERKS0_RKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1ERKS0_S2_i', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2EPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2ERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2ERKS0_PKci', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2ERKS0_RKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2ERKS0_S2_i', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16localeaSERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16stoullERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16stoullERKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16thread20hardware_concurrencyEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16thread4joinEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16thread6detachEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16threadD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16threadD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDiDuPcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDiDuPcED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDiDuPcED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDicPcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDicPcED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDicPcED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDsDuPcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDsDuPcED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDsDuPcED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDsDuPcED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIDscPcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIccPcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIwcPcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIwcPcEC1EPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIwcPcEC1Em', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIwcPcED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17codecvtIwcPcED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE10get_futureEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE13set_exceptionESt13exception_ptr', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE24set_value_at_thread_exitEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE28set_exception_at_thread_exitESt13exception_ptr', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE9set_valueEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvEC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvEC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18__rs_getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18__sp_mut4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18__sp_mut6unlockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base10floatfieldE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base10scientificE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base11adjustfieldE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base15sync_with_stdioEb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base16__call_callbacksENS0_5eventE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base17register_callbackEPFvNS0_5eventERS0_iEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base2inE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base33__set_badbit_and_consider_rethrowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base34__set_failbit_and_consider_rethrowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3appE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3ateE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3decE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3hexE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3octE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3outE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4initEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4leftE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4moveERS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4swapERS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5clearEj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5fixedE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5imbueERKNS_6localeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5iwordEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5pwordEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5rightE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5truncE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6badbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6binaryE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6eofbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6skipwsE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6xallocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7copyfmtERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC1EPKcRKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC1ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC2EPKcRKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC2ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7goodbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7showposE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7unitbufE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base8internalE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base8showbaseE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9__xindex_E', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9basefieldE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9boolalphaE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9showpointE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9uppercaseE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18to_charsEPcS0_d', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18to_charsEPcS0_dNS_12chars_formatE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt17__throw_bad_allocv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt17current_exceptionv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt17rethrow_exceptionSt13exception_ptr', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt18uncaught_exceptionv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt19uncaught_exceptionsv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt7nothrow', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTCNSt3__110istrstreamE0_NS_13basic_istreamIcNS_11char_traitsIcEEEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTCNSt3__110ostrstreamE0_NS_13basic_ostreamIcNS_11char_traitsIcEEEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTCNSt3__19strstreamE0_NS_13basic_istreamIcNS_11char_traitsIcEEEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTCNSt3__19strstreamE0_NS_14basic_iostreamIcNS_11char_traitsIcEEEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__13pmr26synchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__13pmr28unsynchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__16locale5facetE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDiLb1EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDsLb0EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDsLb1EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IwLb0EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IwLb1EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115numpunct_bynameIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115numpunct_bynameIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__116__narrow_to_utf8ILm16EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__116__narrow_to_utf8ILm32EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117__assoc_sub_stateE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117__widen_from_utf8ILm16EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117__widen_from_utf8ILm32EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117bad_function_callE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__119__shared_weak_countE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__120__codecvt_utf8_utf16IDiEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__120__codecvt_utf8_utf16IDsEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__120__codecvt_utf8_utf16IwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr15memory_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr25monotonic_buffer_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr26synchronized_pool_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr28unsynchronized_pool_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__14__fs10filesystem16filesystem_errorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__15ctypeIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__15ctypeIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__16locale5facetE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDiDuPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDicPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDsDuPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDscPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIccPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIwcPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18ios_base7failureE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18ios_baseE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18numpunctIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18numpunctIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__19strstreamE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt12bad_any_cast', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt16nested_exception', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt18bad_variant_access', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt19bad_optional_access', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTTNSt3__110istrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTTNSt3__110ostrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTTNSt3__19strstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt12experimental15fundamentals_v112bad_any_castE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt12experimental19bad_optional_accessE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__110istrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__110ostrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__111regex_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112bad_weak_ptrE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112ctype_bynameIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112ctype_bynameIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112future_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112strstreambufE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112system_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114__codecvt_utf8IDiEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114__shared_countE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114collate_bynameIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114collate_bynameIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114error_categoryE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDiLb0EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDiLb1EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDsLb1EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IwLb0EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IwLb1EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115numpunct_bynameIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115numpunct_bynameIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__116__narrow_to_utf8ILm16EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__116__narrow_to_utf8ILm32EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117__assoc_sub_stateE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117__widen_from_utf8ILm16EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117__widen_from_utf8ILm32EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117bad_function_callE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__119__shared_weak_countE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IDsEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr15memory_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr25monotonic_buffer_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr26synchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr28unsynchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__14__fs10filesystem16filesystem_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__15ctypeIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__15ctypeIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__16locale5facetE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDiDuPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDicPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDsDuPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDscPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIccPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIwcPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18ios_base7failureE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18ios_baseE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18numpunctIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18numpunctIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__19strstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt12bad_any_cast', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt16nested_exception', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt18bad_variant_access', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt19bad_optional_access', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZThn8_NSt3__19strstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZThn8_NSt3__19strstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__110istrstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__110istrstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__110ostrstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__110ostrstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__19strstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__19strstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNKSt11logic_error4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNKSt13runtime_error4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNKSt9exception4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt11logic_errorD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt12length_errorD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt12out_of_rangeD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt13runtime_errorD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt13runtime_errorD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt14overflow_errorD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt16invalid_argumentD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt20bad_array_new_lengthC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt20bad_array_new_lengthD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt8bad_castC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt8bad_castD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt8bad_castD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt9bad_allocC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt9bad_allocD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt9exceptionD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZSt9terminatev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt11logic_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt12length_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt12out_of_range', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt13runtime_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt14overflow_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt16invalid_argument', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt20bad_array_new_length', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt8bad_cast', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt9bad_alloc', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt9exception', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVN10__cxxabiv117__class_type_infoE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVN10__cxxabiv120__si_class_type_infoE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVN10__cxxabiv121__vmi_class_type_infoE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt11logic_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt12length_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt12out_of_range', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt13runtime_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt14overflow_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt16invalid_argument', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_allocate_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_begin_catch', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_current_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_decrement_exception_refcount', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_end_catch', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_free_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_abort', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_acquire', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_release', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_pure_virtual', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_throw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_uncaught_exceptions', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE12find_last_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE13find_first_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE16find_last_not_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE17find_first_not_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4copyEPcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4findEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4findEcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE5rfindEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE5rfindEcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE12find_last_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE13find_first_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE16find_last_not_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE17find_first_not_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4copyEPwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4findEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4findEwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE5rfindEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE5rfindEwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEmmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEmmPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__115basic_streambufIcNS_11char_traitsIcEEE6getlocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__115basic_streambufIwNS_11char_traitsIwEEE6getlocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIcE10do_compareEPKcS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIcE12do_transformEPKcS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIcE7do_hashEPKcS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIwE10do_compareEPKwS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIwE12do_transformEPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIwE7do_hashEPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRd', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE3putES4_RNS_8ios_baseEcPK2tmPKcSC_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcPK2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE3putES4_RNS_8ios_baseEwPK2tmPKwSC_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_RNS_8ios_baseEwPK2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_bRNS_8ios_baseERjRNS_12basic_stringIcS3_NS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_bRNS_8ios_baseERjRe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_bRNS_8ios_baseERjRNS_12basic_stringIwS3_NS_9allocatorIwEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_bRNS_8ios_baseERjRe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_bRNS_8ios_baseEcRKNS_12basic_stringIcS3_NS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_bRNS_8ios_baseEce', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_bRNS_8ios_baseEwRKNS_12basic_stringIwS3_NS_9allocatorIwEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_bRNS_8ios_baseEwe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb0EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb0EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb1EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb1EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb0EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb0EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb1EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb1EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_getIcE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_SF_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_getIwE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERwS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERNS9_IwNSA_IwEENSC_IwEEEESJ_SJ_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIcE13__gather_infoEbbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIcE8__formatEPcRS2_S3_jPKcS5_RKNS_5ctypeIcEEbRKNS_10money_base7patternEccRKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESL_SL_i', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIwE13__gather_infoEbbRKNS_6localeERNS_10money_base7patternERwS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERNS9_IwNSA_IwEENSC_IwEEEESJ_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIwE8__formatEPwRS2_S3_jPKwS5_RKNS_5ctypeIwEEbRKNS_10money_base7patternEwwRKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERKNSE_IwNSF_IwEENSH_IwEEEESQ_i', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE21__grow_by_and_replaceEmmmmmmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4nposE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE5eraseEmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendEPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignEPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertENS_11__wrap_iterIPKcEEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertEmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertEmPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertEmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertEmmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6resizeEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceEmmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceEmmPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceEmmmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7reserveEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE9__grow_byEmmmmmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE9push_backEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_RKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_mmRKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC2ERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC2ERKS5_RKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEaSERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE21__grow_by_and_replaceEmmmmmmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4nposE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE5eraseEmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6__initEPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6__initEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6__initEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendEPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendEPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignEPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignEPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertENS_11__wrap_iterIPKwEEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6resizeEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7reserveEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE9__grow_byEmmmmmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE9push_backEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC1ERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC1ERKS5_RKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC1ERKS5_mmRKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEaSERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE11__read_modeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE12__write_modeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4openEPKcj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4swapERS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4syncEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE5closeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE5imbueERKNS_6localeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE6setbufEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE7seekoffExNS_8ios_base7seekdirEj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE7seekposENS_4fposIPcEEj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE8overflowEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE9pbackfailEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE9underflowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4peekEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4readEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4swapERS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4syncEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5seekgENS_4fposIPcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5seekgExNS_8ios_base7seekdirE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5tellgEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5ungetEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE6ignoreEli', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE6sentryC1ERS3_b', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE7getlineEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE7putbackEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE8readsomeEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsEPFRNS_8ios_baseES5_E', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE5ungetEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE8readsomeEPwl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_ostreamIcNS_11char_traitsIcEEE5flushEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_ostreamIcNS_11char_traitsIcEEE5seekpENS_4fposIPcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__19__num_getIcE17__stage2_int_prepERNS_8ios_baseEPcRc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__19__num_getIcE19__stage2_float_loopEcRbRcPcRS4_ccRKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEPjRSE_RjS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_istreamIcNS_11char_traitsIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_istreamIwNS_11char_traitsIwEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_istreamIwNS_11char_traitsIwEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_ostreamIcNS_11char_traitsIcEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_ostreamIcNS_11char_traitsIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_ostreamIwNS_11char_traitsIwEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__113basic_ostreamIwNS_11char_traitsIwEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__114basic_iostreamIcNS_11char_traitsIcEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZTv0_n12_NSt3__114basic_iostreamIcNS_11char_traitsIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_ZdaPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_ZdaPvSt11align_val_t', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_ZdlPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_ZdlPvSt11align_val_t', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_Znam', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_ZnamSt11align_val_t', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_Znwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wIMP', 'is_defined': False, 'name': '_ZnwmSt11align_val_t', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/app/src/main/cpp/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
new file mode 100644
index 0000000..318b85b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -0,0 +1,2044 @@
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt12bad_any_cast4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt12experimental15fundamentals_v112bad_any_cast4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt16nested_exception14rethrow_nestedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt18bad_variant_access4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt19bad_optional_access4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__110__time_put8__do_putEPcRS1_PK2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__110__time_put8__do_putEPwRS1_PK2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__110error_code7messageEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112bad_weak_ptr4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIcE10do_tolowerEPcPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIcE10do_tolowerEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIcE10do_toupperEPcPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIcE10do_toupperEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_scan_isEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_tolowerEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_tolowerEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_toupperEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE10do_toupperEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE11do_scan_notEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE5do_isEPKwS3_Pj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE5do_isEjw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE8do_widenEPKcS3_Pw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE8do_widenEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE9do_narrowEPKwS3_cPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112ctype_bynameIwE9do_narrowEwc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__112strstreambuf6pcountEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__113random_device7entropyEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE5do_inERPcPKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE6do_outERPcPKDiS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDiE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE5do_inERPcPKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE6do_outERPcPKDsS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IDsE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE5do_inERPcPKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE6do_outERPcPKwS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114__codecvt_utf8IwE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIcE10do_compareEPKcS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIcE12do_transformEPKcS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIwE10do_compareEPKwS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114collate_bynameIwE12do_transformEPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114error_category10equivalentERKNS_10error_codeEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114error_category10equivalentEiRKNS_15error_conditionE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__114error_category23default_error_conditionEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE5do_inERPcPKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE6do_outERPcPKDiS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb0EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE5do_inERPcPKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE6do_outERPcPKDiS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDiLb1EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE5do_inERPcPKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE6do_outERPcPKDsS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb0EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE5do_inERPcPKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE6do_outERPcPKDsS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IDsLb1EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE5do_inERPcPKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE6do_outERPcPKwS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb0EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE5do_inERPcPKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE6do_outERPcPKwS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115error_condition7messageEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__118__time_get_storageIcE15__do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__118__time_get_storageIwE15__do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__119__shared_weak_count13__get_deleterERKSt9type_info', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE5do_inERPcPKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE6do_outERPcPKDiS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDiE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE5do_inERPcPKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE6do_outERPcPKDsS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IDsE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE10do_unshiftERPcS2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE5do_inERPcPKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE6do_outERPcPKwS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__codecvt_utf8_utf16IwE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__XEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__cEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__rEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE3__xEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE7__am_pmEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE7__weeksEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIcE8__monthsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__XEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__cEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__rEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE3__xEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE7__am_pmEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE7__weeksEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__time_get_c_storageIwE8__monthsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__vector_base_commonILb1EE20__throw_length_errorEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__120__vector_base_commonILb1EE20__throw_out_of_rangeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__121__basic_string_commonILb1EE20__throw_out_of_rangeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__123__match_any_but_newlineIcE6__execERNS_7__stateIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__123__match_any_but_newlineIwE6__execERNS_7__stateIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr26synchronized_pool_resource11do_is_equalERKNS0_15memory_resourceE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource12__pool_indexEmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource17__pool_block_sizeEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource22__log2_pool_block_sizeEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__13pmr28unsynchronized_pool_resource7optionsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem18directory_iterator13__dereferenceEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem28recursive_directory_iterator13__dereferenceEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem28recursive_directory_iterator5depthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem28recursive_directory_iterator7optionsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path10__filenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path11__extensionEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path11__root_nameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path13__parent_pathEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path15__relative_pathEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path15__root_path_rawEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path16__root_directoryEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path16lexically_normalEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path18lexically_relativeERKS2_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path3endEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path5beginEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path6__stemEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__14__fs10filesystem4path9__compareENS_17basic_string_viewIcNS_11char_traitsIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_tolowerEPcPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_tolowerEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_toupperEPcPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE10do_toupperEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE8do_widenEPKcS3_Pc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE8do_widenEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE9do_narrowEPKcS3_cPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIcE9do_narrowEcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_scan_isEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_tolowerEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_tolowerEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_toupperEPwPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE10do_toupperEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE11do_scan_notEjPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE5do_isEPKwS3_Pj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE5do_isEjw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE8do_widenEPKcS3_Pw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE8do_widenEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE9do_narrowEPKwS3_cPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__15ctypeIwE9do_narrowEwc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16locale4nameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16locale9has_facetERNS0_2idE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16locale9use_facetERNS0_2idE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__16localeeqERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE10do_unshiftERS1_PDuS4_RS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE5do_inERS1_PKDuS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE6do_outERS1_PKDiS5_RS5_PDuS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDiDuPcE9do_lengthERS1_PKDuS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE5do_inERS1_PKcS5_RS5_PDiS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE6do_outERS1_PKDiS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDicPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE10do_unshiftERS1_PDuS4_RS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE5do_inERS1_PKDuS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE6do_outERS1_PKDsS5_RS5_PDuS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDsDuPcE9do_lengthERS1_PKDuS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE5do_inERS1_PKcS5_RS5_PDsS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE6do_outERS1_PKDsS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIDscPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE5do_inERS1_PKcS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE6do_outERS1_PKcS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIccPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE10do_unshiftERS1_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE11do_encodingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE13do_max_lengthEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE16do_always_noconvEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE5do_inERS1_PKcS5_RS5_PwS7_RS7_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE6do_outERS1_PKwS5_RS5_S1_S1_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__17codecvtIwcPcE9do_lengthERS1_PKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE11do_truenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE12do_falsenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIcE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE11do_truenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE12do_falsenameEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__18numpunctIwE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC1ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt11logic_errorC2ERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt13exception_ptraSERKS_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__14__fs10filesystem4path8iterator11__incrementEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__14coutE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIcE10table_sizeE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIcE13classic_tableEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15ctypeIcE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutex4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutex6unlockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutexD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15mutexD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stollERKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stoulERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15stoulERKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEEPmi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15wcerrE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__15wcoutE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16__itoa8__u32toaEjPc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12steady_clock3nowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12system_clock11from_time_tEl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12system_clock3nowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16chrono12system_clock9to_time_tERKNS0_10time_pointIS1_NS0_8durationIxNS_5ratioILl1ELl1000000EEEEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16futureIvE3getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale2id5__getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale2id9__next_idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale3allE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale4noneE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale4timeE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5ctypeE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5facet16__on_zero_sharedEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale5facetD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale6globalERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale7classicEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale7collateE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale7numericE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__16locale8monetaryE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE13set_exceptionESt13exception_ptr', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE24set_value_at_thread_exitEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE28set_exception_at_thread_exitESt13exception_ptr', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvE9set_valueEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvEC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvEC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__17promiseIvED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18__rs_getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18__sp_mut4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18__sp_mut6unlockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base10floatfieldE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base10scientificE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base11adjustfieldE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base15sync_with_stdioEb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base16__call_callbacksENS0_5eventE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base17register_callbackEPFvNS0_5eventERS0_iEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base2inE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base33__set_badbit_and_consider_rethrowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base34__set_failbit_and_consider_rethrowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3appE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3ateE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3decE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3hexE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3octE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base3outE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4InitD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4initEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4leftE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4moveERS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base4swapERS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5clearEj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5fixedE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5imbueERKNS_6localeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5iwordEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5pwordEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5rightE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base5truncE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6badbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6binaryE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6eofbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6skipwsE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base6xallocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7copyfmtERKS0_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC1EPKcRKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC1ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC2EPKcRKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureC2ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERKNS_10error_codeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7failureD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7goodbitE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7showposE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base7unitbufE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base8internalE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base8showbaseE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9__xindex_E', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9basefieldE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9boolalphaE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9showpointE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18ios_base9uppercaseE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__18to_charsEPcS0_dNS_12chars_formatE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt17rethrow_exceptionSt13exception_ptr', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt18uncaught_exceptionv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZSt7nothrow', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
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+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__13pmr26synchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__13pmr28unsynchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__14__fs10filesystem16filesystem_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__15ctypeIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__15ctypeIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__16locale5facetE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__17codecvtIDiDuPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__17codecvtIDicPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__17codecvtIDsDuPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__17codecvtIDscPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__17codecvtIccPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__17codecvtIwcPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__18ios_base7failureE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__18ios_baseE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__18numpunctIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__18numpunctIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTINSt3__19strstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTISt12bad_any_cast', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTISt16nested_exception', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTISt18bad_variant_access', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTISt19bad_optional_access', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt12experimental15fundamentals_v112bad_any_castE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt12experimental19bad_optional_accessE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__110istrstreamE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__110ostrstreamE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__111regex_errorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__112bad_weak_ptrE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__112ctype_bynameIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__112ctype_bynameIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__112future_errorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__112strstreambufE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__112system_errorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114__codecvt_utf8IDiEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114__codecvt_utf8IDsEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114__codecvt_utf8IwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114__shared_countE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114collate_bynameIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114collate_bynameIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__114error_categoryE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDiLb0EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDiLb1EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDsLb0EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IDsLb1EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IwLb0EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115__codecvt_utf16IwLb1EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115numpunct_bynameIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__115numpunct_bynameIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__116__narrow_to_utf8ILm16EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__116__narrow_to_utf8ILm32EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117__assoc_sub_stateE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117__widen_from_utf8ILm16EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117__widen_from_utf8ILm32EEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__117bad_function_callE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__119__shared_weak_countE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__120__codecvt_utf8_utf16IDiEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__120__codecvt_utf8_utf16IDsEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__120__codecvt_utf8_utf16IwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr15memory_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr25monotonic_buffer_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr26synchronized_pool_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__13pmr28unsynchronized_pool_resourceE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__14__fs10filesystem16filesystem_errorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__15ctypeIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__15ctypeIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__16locale5facetE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDiDuPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDicPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDsDuPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIDscPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIccPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__17codecvtIwcPcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18ios_base7failureE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18ios_baseE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18numpunctIcEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__18numpunctIwEE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSNSt3__19strstreamE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt12bad_any_cast', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt16nested_exception', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt18bad_variant_access', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTSSt19bad_optional_access', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTTNSt3__110istrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTTNSt3__110ostrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTTNSt3__19strstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt12experimental15fundamentals_v112bad_any_castE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt12experimental19bad_optional_accessE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__110istrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__110ostrstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__111regex_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112bad_weak_ptrE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112ctype_bynameIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112ctype_bynameIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112future_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112strstreambufE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__112system_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114__codecvt_utf8IDiEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114__codecvt_utf8IDsEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114__codecvt_utf8IwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114__shared_countE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114collate_bynameIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114collate_bynameIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__114error_categoryE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDiLb0EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDiLb1EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDsLb0EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IDsLb1EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IwLb0EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115__codecvt_utf16IwLb1EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115numpunct_bynameIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__115numpunct_bynameIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__116__narrow_to_utf8ILm16EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__116__narrow_to_utf8ILm32EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117__assoc_sub_stateE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117__widen_from_utf8ILm16EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117__widen_from_utf8ILm32EEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__117bad_function_callE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__119__shared_weak_countE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IDiEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IDsEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr15memory_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr25monotonic_buffer_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr26synchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__13pmr28unsynchronized_pool_resourceE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__14__fs10filesystem16filesystem_errorE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__15ctypeIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__15ctypeIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__16locale5facetE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDiDuPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDicPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDsDuPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDscPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIccPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__17codecvtIwcPcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18ios_base7failureE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18ios_baseE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18numpunctIcEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__18numpunctIwEE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVNSt3__19strstreamE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt12bad_any_cast', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt16nested_exception', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt18bad_variant_access', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTVSt19bad_optional_access', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZThn16_NSt3__19strstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZThn16_NSt3__19strstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n24_NSt3__110istrstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n24_NSt3__110istrstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n24_NSt3__110ostrstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n24_NSt3__110ostrstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n24_NSt3__19strstreamD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZTv0_n24_NSt3__19strstreamD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNKSt11logic_error4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNKSt13runtime_error4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNKSt9exception4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt11logic_errorD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt12length_errorD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt12out_of_rangeD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt13runtime_errorD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt13runtime_errorD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt14overflow_errorD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt16invalid_argumentD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt20bad_array_new_lengthC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt20bad_array_new_lengthD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt8bad_castC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt8bad_castD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt8bad_castD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt9bad_allocC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt9bad_allocD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZNSt9exceptionD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZSt9terminatev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt11logic_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt12length_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt12out_of_range', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt13runtime_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt14overflow_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt16invalid_argument', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt20bad_array_new_length', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt8bad_cast', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt9bad_alloc', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTISt9exception', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVN10__cxxabiv117__class_type_infoE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVN10__cxxabiv120__si_class_type_infoE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVN10__cxxabiv121__vmi_class_type_infoE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt11logic_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt12length_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt12out_of_range', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt13runtime_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt14overflow_error', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '_ZTVSt16invalid_argument', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_allocate_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_begin_catch', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_current_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_decrement_exception_refcount', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_end_catch', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_free_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_abort', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_acquire', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_guard_release', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_increment_exception_refcount', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_pure_virtual', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_rethrow_primary_exception', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_throw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'IMP', 'is_defined': False, 'name': '__cxa_uncaught_exceptions', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIcLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__110moneypunctIwLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE12find_last_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE13find_first_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE16find_last_not_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE17find_first_not_ofEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4copyEPcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4findEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4findEcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE5rfindEPKcmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE5rfindEcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7compareEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE12find_last_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE13find_first_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE16find_last_not_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE17find_first_not_ofEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4copyEPwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4findEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4findEwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE5rfindEPKwmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE5rfindEwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEmmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEmmPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7compareEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__115basic_streambufIcNS_11char_traitsIcEEE6getlocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__115basic_streambufIwNS_11char_traitsIwEEE6getlocEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIcLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb0EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE11do_groupingEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE13do_neg_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE13do_pos_formatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE14do_curr_symbolEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE14do_frac_digitsEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_decimal_pointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_negative_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_positive_signEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__117moneypunct_bynameIwLb1EE16do_thousands_sepEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIcE10do_compareEPKcS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIcE12do_transformEPKcS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIcE7do_hashEPKcS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIwE10do_compareEPKwS3_S3_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIwE12do_transformEPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17collateIwE7do_hashEPKwS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRd', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRf', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRt', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRx', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjRy', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_RNS_8ios_baseERjS8_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRd', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRf', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRt', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRx', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjRy', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjS8_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcd', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEce', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcx', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__17num_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_RNS_8ios_baseEwPKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18messagesIcE8do_closeEl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18messagesIwE6do_getEliiRKNS_12basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18messagesIwE8do_closeEl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE10__get_hourERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE10__get_yearERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE11__get_am_pmERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE11__get_year4ERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE11do_get_dateES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE11do_get_timeES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE11do_get_yearES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE12__get_minuteERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE12__get_secondERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE13__get_12_hourERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE13__get_percentERS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE13__get_weekdayERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE13do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE14do_get_weekdayES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE15__get_monthnameERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE16do_get_monthnameES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE17__get_weekdaynameERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE17__get_white_spaceERS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE18__get_day_year_numERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE9__get_dayERiRS4_S4_RjRKNS_5ctypeIcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE10__get_hourERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE10__get_yearERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE11__get_am_pmERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE11__get_monthERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE11__get_year4ERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE11do_get_dateES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE11do_get_timeES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE11do_get_yearES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE12__get_minuteERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE12__get_secondERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE13__get_12_hourERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE13__get_percentERS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE13__get_weekdayERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE13do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE14do_get_weekdayES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE15__get_monthnameERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE16do_get_monthnameES4_S4_RNS_8ios_baseERjP2tm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE17__get_weekdaynameERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE17__get_white_spaceERS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE18__get_day_year_numERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE3getES4_S4_RNS_8ios_baseERjP2tmPKwSC_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_RNS_8ios_baseERjP2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE9__get_dayERiRS4_S4_RjRKNS_5ctypeIwEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE3putES4_RNS_8ios_baseEcPK2tmPKcSC_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_RNS_8ios_baseEcPK2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE3putES4_RNS_8ios_baseEwPK2tmPKwSC_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__18time_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_RNS_8ios_baseEwPK2tmcc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_bRNS_8ios_baseERjRNS_12basic_stringIcS3_NS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_getES4_S4_bRNS_8ios_baseERjRe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_bRNS_8ios_baseERjRNS_12basic_stringIwS3_NS_9allocatorIwEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_getES4_S4_bRNS_8ios_baseERjRe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_bRNS_8ios_baseEcRKNS_12basic_stringIcS3_NS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEE6do_putES4_bRNS_8ios_baseEce', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_bRNS_8ios_baseEwRKNS_12basic_stringIwS3_NS_9allocatorIwEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNKSt3__19money_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEE6do_putES4_bRNS_8ios_baseEwe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb0EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb0EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb1EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIcLb1EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb0EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb0EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb1EE2idE', 'storage_mapping_class': 'RW', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__110moneypunctIwLb1EE4intlE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_getIcE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_SF_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_getIwE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERwS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERNS9_IwNSA_IwEENSC_IwEEEESJ_SJ_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIcE13__gather_infoEbbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIcE8__formatEPcRS2_S3_jPKcS5_RKNS_5ctypeIcEEbRKNS_10money_base7patternEccRKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESL_SL_i', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIwE13__gather_infoEbbRKNS_6localeERNS_10money_base7patternERwS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERNS9_IwNSA_IwEENSC_IwEEEESJ_Ri', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__111__money_putIwE8__formatEPwRS2_S3_jPKwS5_RKNS_5ctypeIwEEbRKNS_10money_base7patternEwwRKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERKNSE_IwNSF_IwEENSH_IwEEEESQ_i', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE21__grow_by_and_replaceEmmmmmmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE4nposE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE5eraseEmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6__initEPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6appendEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignEPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6assignEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertENS_11__wrap_iterIPKcEEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertEmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6insertEmPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE6resizeEmc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceEmmPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7replaceEmmPKcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE7reserveEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE9__grow_byEmmmmmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEE9push_backEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEaSERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE21__grow_by_and_replaceEmmmmmmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE2atEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE4nposE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE5eraseEmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6__initEPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6__initEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendEPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendEPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6appendEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignEPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignEPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignERKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6assignEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertENS_11__wrap_iterIPKwEEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6insertEmmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE6resizeEmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmPKw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmPKwm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmRKS5_mm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7replaceEmmmw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE7reserveEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE9__grow_byEmmmmmm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEE9push_backEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC1ERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC1ERKS5_RKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC1ERKS5_mmRKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC2ERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC2ERKS5_RKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEC2ERKS5_mmRKS4_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEaSERKS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__112basic_stringIwNS_11char_traitsIwEENS_9allocatorIwEEEaSEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE11__read_modeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE12__write_modeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4openEPKcj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4swapERS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4syncEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE5closeEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE5imbueERKNS_6localeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE6setbufEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE7seekoffExNS_8ios_base7seekdirEj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE7seekposENS_4fposIPcEEj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE8overflowEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE9pbackfailEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE9underflowEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC1EOS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC2EOS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEEC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_filebufIcNS_11char_traitsIcEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getEPclc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getERNS_15basic_streambufIcS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getERNS_15basic_streambufIcS2_EEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getERc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE3getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4peekEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4readEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4swapERS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE4syncEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5seekgENS_4fposIPcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5seekgExNS_8ios_base7seekdirE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5tellgEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE5ungetEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE6ignoreEli', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE6sentryC1ERS3_b', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE6sentryC2ERS3_b', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE7getlineEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE7getlineEPclc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE7putbackEc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEE8readsomeEPcl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEEC1EPNS_15basic_streambufIcS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEEC2EPNS_15basic_streambufIcS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEED0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsEPFRNS_8ios_baseES5_E', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsEPFRNS_9basic_iosIcS2_EES6_E', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsEPFRS3_S4_E', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsEPNS_15basic_streambufIcS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERb', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERd', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERe', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERf', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERs', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERt', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERx', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIcNS_11char_traitsIcEEErsERy', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE3getEPwl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE3getEPwlw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE3getERNS_15basic_streambufIwS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE3getERNS_15basic_streambufIwS2_EEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE3getERw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE3getEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE4peekEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE4readEPwl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE4swapERS3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE4syncEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE5seekgENS_4fposIPcEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE5seekgExNS_8ios_base7seekdirE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE5tellgEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE5ungetEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE6ignoreEli', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE6sentryC1ERS3_b', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE6sentryC2ERS3_b', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE7getlineEPwl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE7getlineEPwlw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE7putbackEw', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEE8readsomeEPwl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEEC1EPNS_15basic_streambufIwS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEEC2EPNS_15basic_streambufIwS2_EE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__113basic_istreamIwNS_11char_traitsIwEEED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/app/src/main/cpp/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
new file mode 100644
index 0000000..70161ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
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diff --git a/app/src/main/cpp/libcxx/lib/abi/x86_64-none-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/app/src/main/cpp/libcxx/lib/abi/x86_64-none-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
new file mode 100644
index 0000000..67624ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/x86_64-none-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
@@ -0,0 +1,2350 @@
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+{'is_defined': True, 'name': '_ZNKSt13bad_exception4whatEv', 'type': 'FUNC'}
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+{'is_defined': True, 'name': '_ZNKSt6__test10moneypunctIcLb0EE13do_neg_formatEv', 'type': 'FUNC'}
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diff --git a/app/src/main/cpp/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist b/app/src/main/cpp/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
new file mode 100644
index 0000000..01a3ea9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
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new file mode 100644
index 0000000..06a3b25
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+{'is_defined': True, 'name': '_ZTVNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE', 'size': 80, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEE', 'size': 80, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IDiEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IDsEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__120__codecvt_utf8_utf16IwEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__13pmr15memory_resourceE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__13pmr25monotonic_buffer_resourceE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__13pmr26__null_memory_resource_impE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__13pmr26synchronized_pool_resourceE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__13pmr28unsynchronized_pool_resourceE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__13pmr32__new_delete_memory_resource_impE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__14__fs10filesystem16filesystem_errorE', 'size': 40, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__15ctypeIcEE', 'size': 104, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__15ctypeIwEE', 'size': 136, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__16locale5facetE', 'size': 40, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDiDu11__mbstate_tEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDic11__mbstate_tEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDsDu11__mbstate_tEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17codecvtIDsc11__mbstate_tEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17codecvtIcc11__mbstate_tEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17codecvtIwc11__mbstate_tEE', 'size': 96, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17collateIcEE', 'size': 64, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17collateIwEE', 'size': 64, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17num_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEEE', 'size': 128, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17num_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEEE', 'size': 128, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17num_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEEE', 'size': 104, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__17num_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEEE', 'size': 104, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18ios_base7failureE', 'size': 40, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18ios_baseE', 'size': 32, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18messagesIcEE', 'size': 64, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18messagesIwEE', 'size': 64, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18numpunctIcEE', 'size': 80, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18numpunctIwEE', 'size': 80, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18time_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEEE', 'size': 168, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18time_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEEE', 'size': 168, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18time_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEEE', 'size': 48, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__18time_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEEE', 'size': 48, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19basic_iosIcNS_11char_traitsIcEEEE', 'size': 32, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19basic_iosIwNS_11char_traitsIwEEEE', 'size': 32, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19money_getIcNS_19istreambuf_iteratorIcNS_11char_traitsIcEEEEEE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19money_getIwNS_19istreambuf_iteratorIwNS_11char_traitsIwEEEEEE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19money_putIcNS_19ostreambuf_iteratorIcNS_11char_traitsIcEEEEEE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19money_putIwNS_19ostreambuf_iteratorIwNS_11char_traitsIwEEEEEE', 'size': 56, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVNSt3__19strstreamE', 'size': 120, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVSt12bad_any_cast', 'size': 40, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVSt16nested_exception', 'size': 32, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVSt18bad_variant_access', 'size': 40, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZTVSt19bad_optional_access', 'size': 40, 'type': 'OBJECT'}
+{'is_defined': True, 'name': '_ZThn16_NSt3__114basic_iostreamIcNS_11char_traitsIcEEED0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZThn16_NSt3__114basic_iostreamIcNS_11char_traitsIcEEED1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZThn16_NSt3__19strstreamD0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZThn16_NSt3__19strstreamD1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__110istrstreamD0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__110istrstreamD1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__110ostrstreamD0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__110ostrstreamD1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_istreamIcNS_11char_traitsIcEEED0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_istreamIcNS_11char_traitsIcEEED1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_istreamIwNS_11char_traitsIwEEED0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_istreamIwNS_11char_traitsIwEEED1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_ostreamIcNS_11char_traitsIcEEED0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_ostreamIcNS_11char_traitsIcEEED1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_ostreamIwNS_11char_traitsIwEEED0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__113basic_ostreamIwNS_11char_traitsIwEEED1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__114basic_iostreamIcNS_11char_traitsIcEEED0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__114basic_iostreamIcNS_11char_traitsIcEEED1Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__19strstreamD0Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZTv0_n24_NSt3__19strstreamD1Ev', 'type': 'FUNC'}
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/lib/libc++abi.exp b/app/src/main/cpp/libcxx/lib/libc++abi.exp
new file mode 100644
index 0000000..6a3e6b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/libc++abi.exp
@@ -0,0 +1,295 @@
+___cxa_demangle
+___cxa_get_globals
+___cxa_get_globals_fast
+___cxa_guard_abort
+___cxa_guard_acquire
+___cxa_guard_release
+___cxa_pure_virtual
+___cxa_deleted_virtual
+___cxa_throw_bad_array_new_length
+___cxa_uncaught_exceptions
+___cxa_vec_cctor
+___cxa_vec_cleanup
+___cxa_vec_ctor
+___cxa_vec_delete
+___cxa_vec_delete2
+___cxa_vec_delete3
+___cxa_vec_dtor
+___cxa_vec_new
+___cxa_vec_new2
+___cxa_vec_new3
+___dynamic_cast
+__ZTIDi
+__ZTIDn
+__ZTIDs
+__ZTIPDi
+__ZTIPDn
+__ZTIPDs
+__ZTIPKDi
+__ZTIPKDn
+__ZTIPKDs
+__ZTSPm
+__ZTSPl
+__ZTSPj
+__ZTSPi
+__ZTSPh
+__ZTSPf
+__ZTSPe
+__ZTSPd
+__ZTSPc
+__ZTSPb
+__ZTSPa
+__ZTSPKc
+__ZTSPKy
+__ZTSPKx
+__ZTSPKw
+__ZTSPKv
+__ZTSPKt
+__ZTSPKs
+__ZTSPKm
+__ZTSPKl
+__ZTSPKi
+__ZTSPKh
+__ZTSPs
+__ZTSPt
+__ZTSPv
+__ZTSPw
+__ZTSPKa
+__ZTSPx
+__ZTSPy
+__ZTSPKd
+__ZTSPKe
+__ZTSPKj
+__ZTSPKb
+__ZTSPKf
+__ZTSv
+__ZTSt
+__ZTSs
+__ZTSm
+__ZTSl
+__ZTSj
+__ZTSi
+__ZTSh
+__ZTSf
+__ZTSe
+__ZTSd
+__ZTSc
+__ZTSw
+__ZTSx
+__ZTSy
+__ZTSb
+__ZTSa
+__ZTIPKh
+__ZTIPKf
+__ZTIPKe
+__ZTIPKd
+__ZTIPKc
+__ZTIPKb
+__ZTIPKa
+__ZTIPy
+__ZTIPx
+__ZTIPw
+__ZTIPv
+__ZTIPt
+__ZTIPs
+__ZTIPm
+__ZTIPl
+__ZTIPj
+__ZTIPi
+__ZTIPKi
+__ZTIPKj
+__ZTIPKl
+__ZTIPKm
+__ZTIPKs
+__ZTIPKt
+__ZTIPKv
+__ZTIPKw
+__ZTIPKx
+__ZTIPKy
+__ZTIPa
+__ZTIPb
+__ZTIPc
+__ZTIPd
+__ZTIPe
+__ZTIPf
+__ZTIPh
+__ZTVN10__cxxabiv129__pointer_to_member_type_infoE
+__ZTVN10__cxxabiv116__enum_type_infoE
+__ZTVN10__cxxabiv117__array_type_infoE
+__ZTVN10__cxxabiv117__class_type_infoE
+__ZTVN10__cxxabiv117__pbase_type_infoE
+__ZTVN10__cxxabiv119__pointer_type_infoE
+__ZTVN10__cxxabiv120__function_type_infoE
+__ZTVN10__cxxabiv120__si_class_type_infoE
+__ZTVN10__cxxabiv121__vmi_class_type_infoE
+__ZTVN10__cxxabiv123__fundamental_type_infoE
+__ZTIa
+__ZTIb
+__ZTIc
+__ZTId
+__ZTIe
+__ZTIf
+__ZTIh
+__ZTIi
+__ZTIj
+__ZTIl
+__ZTIm
+__ZTIs
+__ZTIt
+__ZTSN10__cxxabiv129__pointer_to_member_type_infoE
+__ZTSN10__cxxabiv123__fundamental_type_infoE
+__ZTSN10__cxxabiv121__vmi_class_type_infoE
+__ZTSN10__cxxabiv120__si_class_type_infoE
+__ZTSN10__cxxabiv120__function_type_infoE
+__ZTSN10__cxxabiv119__pointer_type_infoE
+__ZTSN10__cxxabiv117__pbase_type_infoE
+__ZTSN10__cxxabiv117__class_type_infoE
+__ZTSN10__cxxabiv117__array_type_infoE
+__ZTSN10__cxxabiv116__enum_type_infoE
+__ZTIy
+__ZTIx
+__ZTIw
+__ZTIv
+__ZSt13get_terminatev
+__ZSt13set_terminatePFvvE
+__ZSt14get_unexpectedv
+__ZSt14set_unexpectedPFvvE
+__ZSt15get_new_handlerv
+__ZSt15set_new_handlerPFvvE
+__ZSt9terminatev
+__ZNSt9bad_allocD1Ev
+__ZTISt9bad_alloc
+__ZNSt9bad_allocC1Ev
+__ZTISt13bad_exception
+__ZTVSt10bad_typeid
+__ZTVSt9exception
+__ZNSt10bad_typeidC1Ev
+__ZNSt10bad_typeidC1Ev
+__ZNKSt10bad_typeid4whatEv
+__ZNSt10bad_typeidD1Ev
+__ZTVSt8bad_cast
+__ZNSt8bad_castC1Ev
+__ZNSt8bad_castC2Ev
+__ZNSt8bad_castD0Ev
+__ZNKSt8bad_cast4whatEv
+__ZNSt8bad_castD1Ev
+__ZNSt8bad_castD2Ev
+__ZTVSt9bad_alloc
+__ZTVSt20bad_array_new_length
+__ZTVSt13bad_exception
+__ZNKSt9exception4whatEv
+__ZNKSt9bad_alloc4whatEv
+__ZNSt9bad_allocC2Ev
+__ZNSt9bad_allocD0Ev
+__ZNSt9bad_allocD2Ev
+__ZNSt9exceptionD0Ev
+__ZNSt20bad_array_new_lengthC1Ev
+__ZNKSt13bad_exception4whatEv
+__ZNSt9exceptionD1Ev
+__ZNKSt20bad_array_new_length4whatEv
+__ZNSt13bad_exceptionD1Ev
+__ZNSt20bad_array_new_lengthD1Ev
+__ZNSt9exceptionD2Ev
+__ZNSt9type_infoD0Ev
+__ZNSt9type_infoD1Ev
+__ZNSt9type_infoD2Ev
+__ZNSt10bad_typeidC2Ev
+__ZNSt10bad_typeidD0Ev
+__ZNSt10bad_typeidD2Ev
+__ZNSt13bad_exceptionD0Ev
+__ZNSt13bad_exceptionD2Ev
+__ZNSt20bad_array_new_lengthC2Ev
+__ZNSt20bad_array_new_lengthD0Ev
+__ZNSt20bad_array_new_lengthD2Ev
+__ZSt10unexpectedv
+__ZTISt10bad_typeid
+__ZTISt8bad_cast
+___cxa_bad_typeid
+___cxa_bad_cast
+__ZTISt9exception
+__ZTISt9type_info
+__ZTISt20bad_array_new_length
+
+__ZNKSt11logic_error4whatEv
+__ZNSt11logic_errorD0Ev
+__ZNSt11logic_errorD1Ev
+__ZNSt11logic_errorD2Ev
+__ZTISt11logic_error
+__ZTSSt11logic_error
+__ZTVSt11logic_error
+
+__ZNKSt13runtime_error4whatEv
+__ZNSt13runtime_errorD0Ev
+__ZNSt13runtime_errorD1Ev
+__ZNSt13runtime_errorD2Ev
+__ZTISt13runtime_error
+__ZTSSt13runtime_error
+__ZTVSt13runtime_error
+
+__ZNSt11range_errorD0Ev
+__ZNSt11range_errorD1Ev
+__ZNSt11range_errorD2Ev
+__ZTISt11range_error
+__ZTSSt11range_error
+__ZTVSt11range_error
+
+__ZNSt12domain_errorD0Ev
+__ZNSt12domain_errorD1Ev
+__ZNSt12domain_errorD2Ev
+__ZTISt12domain_error
+__ZTSSt12domain_error
+__ZTVSt12domain_error
+
+__ZNSt12length_errorD0Ev
+__ZNSt12length_errorD1Ev
+__ZNSt12length_errorD2Ev
+__ZTISt12length_error
+__ZTSSt12length_error
+__ZTVSt12length_error
+
+__ZNSt12out_of_rangeD0Ev
+__ZNSt12out_of_rangeD1Ev
+__ZNSt12out_of_rangeD2Ev
+__ZTISt12out_of_range
+__ZTSSt12out_of_range
+__ZTVSt12out_of_range
+
+__ZNSt14overflow_errorD0Ev
+__ZNSt14overflow_errorD1Ev
+__ZNSt14overflow_errorD2Ev
+__ZTISt14overflow_error
+__ZTSSt14overflow_error
+__ZTVSt14overflow_error
+
+__ZNSt15underflow_errorD0Ev
+__ZNSt15underflow_errorD1Ev
+__ZNSt15underflow_errorD2Ev
+__ZTISt15underflow_error
+__ZTSSt15underflow_error
+__ZTVSt15underflow_error
+
+__ZNSt16invalid_argumentD0Ev
+__ZNSt16invalid_argumentD1Ev
+__ZNSt16invalid_argumentD2Ev
+__ZTISt16invalid_argument
+__ZTSSt16invalid_argument
+__ZTVSt16invalid_argument
+
+__ZTSDi
+__ZTSDn
+__ZTSDs
+__ZTSPDi
+__ZTSPDn
+__ZTSPDs
+__ZTSPKDi
+__ZTSPKDn
+__ZTSPKDs
+
+__ZTSSt8bad_cast
+__ZTSSt9bad_alloc
+__ZTSSt9exception
+__ZTSSt9type_info
+__ZTSSt10bad_typeid
+__ZTSSt13bad_exception
+__ZTSSt20bad_array_new_length
+__ZTVSt9type_info
diff --git a/app/src/main/cpp/libcxx/lib/libc++unexp.exp b/app/src/main/cpp/libcxx/lib/libc++unexp.exp
new file mode 100644
index 0000000..9507fc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/libc++unexp.exp
@@ -0,0 +1,19 @@
+# all guard variables
+__ZGVNSt3__*
+# all vtables
+# __ZTV*
+# all VTT
+# __ZTT*
+# all non-virtual thunks
+# __ZTh*
+# all virtual thunks
+# __ZTv*
+# typeinfo for std::__1::__types
+#    There are no std::__types
+# __ZTINSt3__1[0-9][0-9]*__*
+# typeinfo name for std::__1::__types
+__ZTSNSt3__1[0-9][0-9]*__*
+# anything using __hidden_allocator
+*__hidden_allocator*
+# anything using __sso_allocator
+*__sso_allocator*
diff --git a/app/src/main/cpp/libcxx/lib/notweak.exp b/app/src/main/cpp/libcxx/lib/notweak.exp
new file mode 100644
index 0000000..fafde1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/notweak.exp
@@ -0,0 +1,5 @@
+# Remove the weak-def bit from these external symbols
+__ZT*
+__ZN*
+__ZS*
+
diff --git a/app/src/main/cpp/libcxx/lib/weak.exp b/app/src/main/cpp/libcxx/lib/weak.exp
new file mode 100644
index 0000000..6bdcc05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/lib/weak.exp
@@ -0,0 +1,16 @@
+__ZTISt10bad_typeid
+__ZTISt11logic_error
+__ZTISt11range_error
+__ZTISt12domain_error
+__ZTISt12length_error
+__ZTISt12out_of_range
+__ZTISt13bad_exception
+__ZTISt13runtime_error
+__ZTISt14overflow_error
+__ZTISt15underflow_error
+__ZTISt16invalid_argument
+__ZTISt16nested_exception
+__ZTISt20bad_array_new_length
+__ZTISt8bad_cast
+__ZTISt9bad_alloc
+__ZTISt9exception
diff --git a/app/src/main/cpp/libcxx/src/CMakeLists.txt b/app/src/main/cpp/libcxx/src/CMakeLists.txt
new file mode 100644
index 0000000..9ff2a62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/CMakeLists.txt
@@ -0,0 +1,435 @@
+set(LIBCXX_LIB_CMAKEFILES_DIR "${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}"  PARENT_SCOPE)
+
+# Get sources
+set(LIBCXX_SOURCES
+  algorithm.cpp
+  any.cpp
+  atomic.cpp
+  barrier.cpp
+  bind.cpp
+  charconv.cpp
+  chrono.cpp
+  condition_variable.cpp
+  condition_variable_destructor.cpp
+  exception.cpp
+  functional.cpp
+  future.cpp
+  hash.cpp
+  include/apple_availability.h
+  include/atomic_support.h
+  include/config_elast.h
+  include/refstring.h
+  include/ryu/common.h
+  include/ryu/d2fixed.h
+  include/ryu/d2fixed_full_table.h
+  include/ryu/d2s.h
+  include/ryu/d2s_full_table.h
+  include/ryu/d2s_intrinsics.h
+  include/ryu/digit_table.h
+  include/ryu/f2s.h
+  include/ryu/ryu.h
+  include/to_chars_floating_point.h
+  legacy_pointer_safety.cpp
+  memory.cpp
+  memory_resource.cpp
+  mutex.cpp
+  mutex_destructor.cpp
+  new.cpp
+  optional.cpp
+  random_shuffle.cpp
+  ryu/d2fixed.cpp
+  ryu/d2s.cpp
+  ryu/f2s.cpp
+  shared_mutex.cpp
+  stdexcept.cpp
+  string.cpp
+  support/runtime/exception_fallback.ipp
+  support/runtime/exception_glibcxx.ipp
+  support/runtime/exception_libcxxabi.ipp
+  support/runtime/exception_libcxxrt.ipp
+  support/runtime/exception_msvc.ipp
+  support/runtime/exception_pointer_cxxabi.ipp
+  support/runtime/exception_pointer_glibcxx.ipp
+  support/runtime/exception_pointer_msvc.ipp
+  support/runtime/exception_pointer_unimplemented.ipp
+  support/runtime/new_handler_fallback.ipp
+  support/runtime/stdexcept_default.ipp
+  support/runtime/stdexcept_vcruntime.ipp
+  system_error.cpp
+  thread.cpp
+  typeinfo.cpp
+  utility.cpp
+  valarray.cpp
+  variant.cpp
+  vector.cpp
+  verbose_abort.cpp
+  )
+
+if (LIBCXX_ENABLE_DEBUG_MODE OR LIBCXX_ENABLE_BACKWARDS_COMPATIBILITY_DEBUG_MODE_SYMBOLS)
+  list(APPEND LIBCXX_SOURCES
+    debug.cpp
+    legacy_debug_handler.cpp
+    )
+endif()
+
+if (LIBCXX_ENABLE_RANDOM_DEVICE)
+  list(APPEND LIBCXX_SOURCES
+    random.cpp
+    )
+endif()
+
+if (LIBCXX_ENABLE_LOCALIZATION)
+  list(APPEND LIBCXX_SOURCES
+    include/sso_allocator.h
+    ios.cpp
+    ios.instantiations.cpp
+    iostream.cpp
+    locale.cpp
+    regex.cpp
+    strstream.cpp
+    )
+endif()
+
+if(WIN32)
+  list(APPEND LIBCXX_SOURCES
+    support/win32/locale_win32.cpp
+    support/win32/support.cpp
+    )
+
+  if (NOT LIBCXX_HAS_PTHREAD_API)
+    list(APPEND LIBCXX_SOURCES
+      support/win32/thread_win32.cpp
+      )
+  endif()
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "SunOS")
+  list(APPEND LIBCXX_SOURCES
+    support/solaris/mbsnrtowcs.inc
+    support/solaris/wcsnrtombs.inc
+    support/solaris/xlocale.cpp
+    )
+elseif(ZOS)
+  list(APPEND LIBCXX_SOURCES
+    support/ibm/mbsnrtowcs.cpp
+    support/ibm/wcsnrtombs.cpp
+    support/ibm/xlocale_zos.cpp
+    )
+endif()
+
+if (LIBCXX_ENABLE_FILESYSTEM)
+  list(APPEND LIBCXX_SOURCES
+    filesystem/filesystem_common.h
+    filesystem/operations.cpp
+    filesystem/directory_iterator.cpp
+    filesystem/posix_compat.h
+    )
+  # Filesystem uses __int128_t, which requires a definition of __muloi4 when
+  # compiled with UBSAN. This definition is not provided by libgcc_s, but is
+  # provided by compiler-rt. So we need to disable it to avoid having multiple
+  # definitions. See filesystem/int128_builtins.cpp.
+  if (NOT LIBCXX_USE_COMPILER_RT)
+    list(APPEND LIBCXX_SOURCES
+      filesystem/int128_builtins.cpp
+      )
+  endif()
+endif()
+
+# Add all the headers to the project for IDEs.
+if (LIBCXX_CONFIGURE_IDE)
+  file(GLOB_RECURSE LIBCXX_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../include/*)
+  if(WIN32)
+    file( GLOB LIBCXX_WIN32_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../include/__support/win32/*.h)
+    list(APPEND LIBCXX_HEADERS ${LIBCXX_WIN32_HEADERS})
+  endif()
+  # Force them all into the headers dir on MSVC, otherwise they end up at
+  # project scope because they don't have extensions.
+  if (MSVC_IDE)
+    source_group("Header Files" FILES ${LIBCXX_HEADERS})
+  endif()
+endif()
+
+if(NOT LIBCXX_INSTALL_LIBRARY)
+  set(exclude_from_all EXCLUDE_FROM_ALL)
+endif()
+
+if (LIBCXX_GENERATE_COVERAGE AND NOT LIBCXX_COVERAGE_LIBRARY)
+  find_compiler_rt_library(profile LIBCXX_COVERAGE_LIBRARY)
+endif()
+add_library_flags_if(LIBCXX_COVERAGE_LIBRARY "${LIBCXX_COVERAGE_LIBRARY}")
+
+if (APPLE AND LLVM_USE_SANITIZER)
+  if (("${LLVM_USE_SANITIZER}" STREQUAL "Address") OR
+      ("${LLVM_USE_SANITIZER}" STREQUAL "Address;Undefined") OR
+      ("${LLVM_USE_SANITIZER}" STREQUAL "Undefined;Address"))
+    set(LIBFILE "libclang_rt.asan_osx_dynamic.dylib")
+  elseif("${LLVM_USE_SANITIZER}" STREQUAL "Undefined")
+    set(LIBFILE "libclang_rt.ubsan_osx_dynamic.dylib")
+  elseif("${LLVM_USE_SANITIZER}" STREQUAL "Thread")
+    set(LIBFILE "libclang_rt.tsan_osx_dynamic.dylib")
+  else()
+    message(WARNING "LLVM_USE_SANITIZER=${LLVM_USE_SANITIZER} is not supported on OS X")
+  endif()
+  if (LIBFILE)
+    find_compiler_rt_library(builtins LIBCXX_BUILTINS_LIBRARY)
+    get_filename_component(LIBDIR "${LIBCXX_BUILTINS_LIBRARY}" DIRECTORY)
+    if (NOT IS_DIRECTORY "${LIBDIR}")
+      message(FATAL_ERROR "Cannot find compiler-rt directory on OS X required for LLVM_USE_SANITIZER")
+    endif()
+    set(LIBCXX_SANITIZER_LIBRARY "${LIBDIR}/${LIBFILE}")
+    set(LIBCXX_SANITIZER_LIBRARY "${LIBCXX_SANITIZER_LIBRARY}" PARENT_SCOPE)
+    message(STATUS "Manually linking compiler-rt library: ${LIBCXX_SANITIZER_LIBRARY}")
+    add_library_flags("${LIBCXX_SANITIZER_LIBRARY}")
+    add_link_flags("-Wl,-rpath,${LIBDIR}")
+  endif()
+endif()
+
+if (LIBCXX_ENABLE_PARALLEL_ALGORITHMS AND NOT TARGET pstl::ParallelSTL)
+  message(FATAL_ERROR "Could not find ParallelSTL")
+endif()
+
+function(cxx_set_common_defines name)
+  if (LIBCXX_ENABLE_PARALLEL_ALGORITHMS)
+    target_link_libraries(${name} PUBLIC pstl::ParallelSTL)
+  endif()
+endfunction()
+
+split_list(LIBCXX_COMPILE_FLAGS)
+split_list(LIBCXX_LINK_FLAGS)
+
+# Build the shared library.
+if (LIBCXX_ENABLE_SHARED)
+  add_library(cxx_shared SHARED ${exclude_from_all} ${LIBCXX_SOURCES} ${LIBCXX_HEADERS})
+  target_include_directories(cxx_shared PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+  target_link_libraries(cxx_shared PUBLIC cxx-headers
+                                   PRIVATE ${LIBCXX_LIBRARIES})
+  set_target_properties(cxx_shared
+    PROPERTIES
+      COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
+      LINK_FLAGS    "${LIBCXX_LINK_FLAGS}"
+      OUTPUT_NAME   "${LIBCXX_SHARED_OUTPUT_NAME}"
+      VERSION       "${LIBCXX_LIBRARY_VERSION}"
+      SOVERSION     "${LIBCXX_ABI_VERSION}"
+      DEFINE_SYMBOL ""
+  )
+  cxx_add_common_build_flags(cxx_shared)
+  cxx_set_common_defines(cxx_shared)
+
+  if(ZOS)
+    add_custom_command(TARGET cxx_shared POST_BUILD
+      COMMAND
+        ${LIBCXX_SOURCE_DIR}/utils/zos_rename_dll_side_deck.sh
+        $<TARGET_LINKER_FILE_NAME:cxx_shared> $<TARGET_FILE_NAME:cxx_shared> "${LIBCXX_DLL_NAME}"
+      COMMENT "Rename dll name inside the side deck file"
+      WORKING_DIRECTORY $<TARGET_FILE_DIR:cxx_shared>
+    )
+  endif()
+
+  # Link against libc++abi
+  if (LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY)
+    target_link_libraries(cxx_shared PRIVATE libcxx-abi-shared-objects)
+  else()
+    target_link_libraries(cxx_shared PUBLIC libcxx-abi-shared)
+  endif()
+
+  # Maybe re-export symbols from libc++abi
+  # In particular, we don't re-export the symbols if libc++abi is merged statically
+  # into libc++ because in that case there's no dylib to re-export from.
+  if (APPLE AND LIBCXX_CXX_ABI STREQUAL "libcxxabi"
+            AND NOT DEFINED LIBCXX_OSX_REEXPORT_LIBCXXABI_SYMBOLS
+            AND NOT LIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY)
+    set(LIBCXX_OSX_REEXPORT_LIBCXXABI_SYMBOLS ON)
+  endif()
+
+  if (LIBCXX_OSX_REEXPORT_LIBCXXABI_SYMBOLS)
+    target_link_libraries(cxx_shared PRIVATE
+      "-Wl,-unexported_symbols_list,${CMAKE_CURRENT_SOURCE_DIR}/../lib/libc++unexp.exp"
+      "-Wl,-reexported_symbols_list,${CMAKE_CURRENT_SOURCE_DIR}/../lib/libc++abi.exp"
+      "-Wl,-force_symbols_not_weak_list,${CMAKE_CURRENT_SOURCE_DIR}/../lib/notweak.exp"
+      "-Wl,-force_symbols_weak_list,${CMAKE_CURRENT_SOURCE_DIR}/../lib/weak.exp")
+
+    target_link_libraries(cxx_shared PRIVATE $<TARGET_NAME_IF_EXISTS:cxxabi-reexports>)
+  endif()
+
+  # Generate a linker script in place of a libc++.so symlink.
+  if (LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
+    set(link_libraries)
+
+    set(imported_libname "$<TARGET_PROPERTY:libcxx-abi-shared,IMPORTED_LIBNAME>")
+    set(output_name "$<TARGET_PROPERTY:libcxx-abi-shared,OUTPUT_NAME>")
+    string(APPEND link_libraries "${CMAKE_LINK_LIBRARY_FLAG}$<IF:$<BOOL:${imported_libname}>,${imported_libname},${output_name}>")
+
+    # TODO: Move to the same approach as above for the unwind library
+    if (LIBCXXABI_USE_LLVM_UNWINDER)
+      if (LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY)
+        # libunwind is already included in libc++abi
+      elseif (TARGET unwind_shared OR HAVE_LIBUNWIND)
+        string(APPEND link_libraries " ${CMAKE_LINK_LIBRARY_FLAG}$<TARGET_PROPERTY:unwind_shared,OUTPUT_NAME>")
+      else()
+        string(APPEND link_libraries " ${CMAKE_LINK_LIBRARY_FLAG}unwind")
+      endif()
+    endif()
+
+    set(linker_script "INPUT($<TARGET_SONAME_FILE_NAME:cxx_shared> ${link_libraries})")
+    add_custom_command(TARGET cxx_shared POST_BUILD
+      COMMAND "${CMAKE_COMMAND}" -E remove "$<TARGET_LINKER_FILE:cxx_shared>"
+      COMMAND "${CMAKE_COMMAND}" -E echo "${linker_script}" > "$<TARGET_LINKER_FILE:cxx_shared>"
+      COMMENT "Generating linker script: '${linker_script}' as file $<TARGET_LINKER_FILE:cxx_shared>"
+      VERBATIM
+    )
+  endif()
+
+  list(APPEND LIBCXX_BUILD_TARGETS "cxx_shared")
+  if(WIN32 AND NOT MINGW AND NOT "${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "Windows")
+    # Since we most likely do not have a mt.exe replacement, disable the
+    # manifest bundling.  This allows a normal cmake invocation to pass which
+    # will attempt to use the manifest tool to generate the bundled manifest
+    set_target_properties(cxx_shared PROPERTIES
+                          APPEND_STRING PROPERTY LINK_FLAGS " /MANIFEST:NO")
+  endif()
+endif()
+
+set(CMAKE_STATIC_LIBRARY_PREFIX "lib")
+
+# Build the static library.
+if (LIBCXX_ENABLE_STATIC)
+  add_library(cxx_static STATIC ${exclude_from_all} ${LIBCXX_SOURCES} ${LIBCXX_HEADERS})
+  target_include_directories(cxx_static PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+  target_link_libraries(cxx_static PUBLIC cxx-headers
+                                   PRIVATE ${LIBCXX_LIBRARIES}
+                                   PRIVATE libcxx-abi-static)
+  set_target_properties(cxx_static
+    PROPERTIES
+      COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
+      LINK_FLAGS    "${LIBCXX_LINK_FLAGS}"
+      OUTPUT_NAME   "${LIBCXX_STATIC_OUTPUT_NAME}"
+  )
+  cxx_add_common_build_flags(cxx_static)
+  cxx_set_common_defines(cxx_static)
+
+  if (LIBCXX_HERMETIC_STATIC_LIBRARY)
+    # If the hermetic library doesn't define the operator new/delete functions
+    # then its code shouldn't declare them with hidden visibility.  They might
+    # actually be provided by a shared library at link time.
+    if (LIBCXX_ENABLE_NEW_DELETE_DEFINITIONS)
+      append_flags_if_supported(CXX_STATIC_LIBRARY_FLAGS -fvisibility-global-new-delete-hidden)
+    endif()
+    target_compile_options(cxx_static PRIVATE ${CXX_STATIC_LIBRARY_FLAGS})
+    # _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS can be defined in __config_site
+    # too. Define it in the same way here, to avoid redefinition conflicts.
+    target_compile_definitions(cxx_static PRIVATE _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=)
+  endif()
+
+  list(APPEND LIBCXX_BUILD_TARGETS "cxx_static")
+  # Attempt to merge the libc++.a archive and the ABI library archive into one.
+  if (LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY)
+    target_link_libraries(cxx_static PRIVATE libcxx-abi-static-objects)
+  endif()
+endif()
+
+# Add a meta-target for both libraries.
+add_custom_target(cxx DEPENDS ${LIBCXX_BUILD_TARGETS})
+
+set(LIBCXX_EXPERIMENTAL_SOURCES
+  experimental/memory_resource.cpp
+  format.cpp
+  )
+
+add_library(cxx_experimental STATIC ${LIBCXX_EXPERIMENTAL_SOURCES})
+target_link_libraries(cxx_experimental PUBLIC cxx-headers)
+if (LIBCXX_ENABLE_SHARED)
+  target_link_libraries(cxx_experimental PRIVATE cxx_shared)
+else()
+  target_link_libraries(cxx_experimental PRIVATE cxx_static)
+endif()
+
+if (LIBCXX_HERMETIC_STATIC_LIBRARY)
+  # _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS can be defined in __config_site
+  # too. Define it in the same way here, to avoid redefinition conflicts.
+  target_compile_definitions(cxx_experimental PRIVATE _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=)
+endif()
+
+set_target_properties(cxx_experimental
+  PROPERTIES
+    COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
+    OUTPUT_NAME   "c++experimental"
+)
+cxx_add_common_build_flags(cxx_experimental)
+target_compile_options(cxx_experimental PUBLIC -D_LIBCPP_ENABLE_EXPERIMENTAL)
+
+
+if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
+  set(LIBCXX_EXTERNAL_THREADING_SUPPORT_SOURCES
+      "${CMAKE_CURRENT_SOURCE_DIR}/../test/support/external_threads.cpp")
+
+  if (LIBCXX_ENABLE_SHARED)
+    add_library(cxx_external_threads SHARED ${LIBCXX_EXTERNAL_THREADING_SUPPORT_SOURCES})
+  else()
+    add_library(cxx_external_threads STATIC ${LIBCXX_EXTERNAL_THREADING_SUPPORT_SOURCES})
+  endif()
+
+  set_target_properties(cxx_external_threads
+    PROPERTIES
+      LINK_FLAGS    "${LIBCXX_LINK_FLAGS}"
+      COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
+      OUTPUT_NAME   "c++external_threads"
+  )
+
+  target_link_libraries(cxx_external_threads PRIVATE cxx-headers)
+endif()
+
+if (LIBCXX_INSTALL_SHARED_LIBRARY)
+  install(TARGETS cxx_shared
+    ARCHIVE DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
+    LIBRARY DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
+    RUNTIME DESTINATION ${LIBCXX_INSTALL_RUNTIME_DIR} COMPONENT cxx)
+endif()
+
+if (LIBCXX_INSTALL_STATIC_LIBRARY)
+  install(TARGETS cxx_static
+    ARCHIVE DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
+    LIBRARY DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
+    RUNTIME DESTINATION ${LIBCXX_INSTALL_RUNTIME_DIR} COMPONENT cxx)
+endif()
+
+if (LIBCXX_INSTALL_LIBRARY)
+  install(TARGETS cxx_experimental
+    LIBRARY DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
+    ARCHIVE DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR} COMPONENT cxx
+    RUNTIME DESTINATION ${LIBCXX_INSTALL_RUNTIME_DIR} COMPONENT cxx)
+endif()
+
+# NOTE: This install command must go after the cxx install command otherwise
+# it will not be executed after the library symlinks are installed.
+if (LIBCXX_ENABLE_SHARED AND LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
+  install(FILES "$<TARGET_LINKER_FILE:cxx_shared>"
+    DESTINATION ${LIBCXX_INSTALL_LIBRARY_DIR}
+    COMPONENT libcxx)
+endif()
+
+if (NOT CMAKE_CONFIGURATION_TYPES)
+    if(LIBCXX_INSTALL_LIBRARY)
+      set(lib_install_target "cxx;cxx_experimental")
+    endif()
+    if(LIBCXX_INSTALL_HEADERS)
+      set(header_install_target install-cxx-headers)
+    endif()
+    if (LIBCXX_ENABLE_PARALLEL_ALGORITHMS)
+      set(pstl_install_target install-pstl)
+    endif()
+    add_custom_target(install-cxx
+                      DEPENDS ${lib_install_target}
+                              cxx_experimental
+                              ${header_install_target}
+                              ${pstl_install_target}
+                      COMMAND "${CMAKE_COMMAND}"
+                      -DCMAKE_INSTALL_COMPONENT=cxx
+                      -P "${LIBCXX_BINARY_DIR}/cmake_install.cmake")
+    add_custom_target(install-cxx-stripped
+                      DEPENDS ${lib_install_target}
+                              cxx_experimental
+                              ${header_install_target}
+                              ${pstl_install_target}
+                      COMMAND "${CMAKE_COMMAND}"
+                      -DCMAKE_INSTALL_COMPONENT=cxx
+                      -DCMAKE_INSTALL_DO_STRIP=1
+                      -P "${LIBCXX_BINARY_DIR}/cmake_install.cmake")
+endif()
diff --git a/app/src/main/cpp/libcxx/src/abi/CMakeLists.txt b/app/src/main/cpp/libcxx/src/abi/CMakeLists.txt
new file mode 100644
index 0000000..4c16850
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/CMakeLists.txt
@@ -0,0 +1,349 @@
+# Get sources
+set(LIBCXXABI_SOURCES
+  # C++ABI files
+  cxa_aux_runtime.cpp
+  cxa_default_handlers.cpp
+  cxa_exception_storage.cpp
+  cxa_guard.cpp
+  cxa_handlers.cpp
+  cxa_vector.cpp
+  cxa_virtual.cpp
+  # C++ STL files
+  stdlib_exception.cpp
+  stdlib_stdexcept.cpp
+  stdlib_typeinfo.cpp
+  # Internal files
+  abort_message.cpp
+  fallback_malloc.cpp
+  private_typeinfo.cpp
+)
+
+if (NOT LIBCXXABI_STATIC_DEMANGLE_LIBRARY)
+  list(APPEND LIBCXXABI_SOURCES
+    cxa_demangle.cpp
+  )
+endif()
+
+if (LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
+  list(APPEND LIBCXXABI_SOURCES
+    stdlib_new_delete.cpp
+  )
+endif()
+
+if (LIBCXXABI_ENABLE_EXCEPTIONS)
+  list(APPEND LIBCXXABI_SOURCES
+    cxa_exception.cpp
+    cxa_personality.cpp
+  )
+else()
+  list(APPEND LIBCXXABI_SOURCES
+    cxa_noexception.cpp
+  )
+endif()
+
+if (LIBCXXABI_ENABLE_THREADS AND (UNIX OR FUCHSIA) AND NOT (APPLE OR CYGWIN)
+    AND NOT (${CMAKE_SYSTEM_NAME} MATCHES "AIX"))
+  list(APPEND LIBCXXABI_SOURCES
+    cxa_thread_atexit.cpp
+  )
+endif()
+
+set(LIBCXXABI_HEADERS
+  ../include/cxxabi.h
+)
+
+# Add all the headers to the project for IDEs.
+if (MSVC_IDE OR XCODE)
+  # Force them all into the headers dir on MSVC, otherwise they end up at
+  # project scope because they don't have extensions.
+  if (MSVC_IDE)
+    source_group("Header Files" FILES ${LIBCXXABI_HEADERS})
+  endif()
+endif()
+
+# Some files depend on libc++ internals.
+include_directories("${LIBCXXABI_LIBCXX_PATH}/src")
+
+if (LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL)
+  add_definitions(-DHAVE___CXA_THREAD_ATEXIT_IMPL)
+endif()
+
+if (LIBCXXABI_ENABLE_FORGIVING_DYNAMIC_CAST)
+  add_definitions(-D_LIBCXXABI_FORGIVING_DYNAMIC_CAST)
+endif()
+
+if (APPLE)
+  add_library_flags_if(LIBCXXABI_HAS_SYSTEM_LIB System)
+else()
+  if (LIBCXXABI_ENABLE_THREADS)
+    add_library_flags_if(LIBCXXABI_HAS_PTHREAD_LIB pthread)
+  endif()
+
+  add_library_flags_if(LIBCXXABI_HAS_C_LIB c)
+endif()
+
+if (NOT LIBCXXABI_USE_COMPILER_RT)
+  add_library_flags_if(LIBCXXABI_HAS_GCC_LIB gcc)
+endif()
+if (NOT LIBCXXABI_USE_LLVM_UNWINDER)
+  add_library_flags_if(LIBCXXABI_HAS_GCC_S_LIB gcc_s)
+endif()
+
+if (MINGW)
+  # MINGW_LIBRARIES is defined in config-ix.cmake
+  list(APPEND LIBCXXABI_LIBRARIES ${MINGW_LIBRARIES})
+endif()
+if (ANDROID AND ANDROID_PLATFORM_LEVEL LESS 21)
+  list(APPEND LIBCXXABI_LIBRARIES android_support)
+endif()
+
+# Setup flags.
+if (CXX_SUPPORTS_NOSTDLIBXX_FLAG)
+  add_link_flags_if_supported(-nostdlib++)
+else()
+  add_link_flags_if_supported(-nodefaultlibs)
+endif()
+
+if (CXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG AND LIBCXXABI_USE_LLVM_UNWINDER)
+  # If we're linking directly against the libunwind that we're building
+  # in the same invocation, don't try to link in the toolchain's
+  # default libunwind (which may be missing still).
+  add_link_flags_if_supported(--unwindlib=none)
+endif()
+
+if ( APPLE )
+  if (LLVM_USE_SANITIZER)
+    if (("${LLVM_USE_SANITIZER}" STREQUAL "Address") OR
+        ("${LLVM_USE_SANITIZER}" STREQUAL "Address;Undefined") OR
+        ("${LLVM_USE_SANITIZER}" STREQUAL "Undefined;Address"))
+      set(LIBFILE "libclang_rt.asan_osx_dynamic.dylib")
+    elseif("${LLVM_USE_SANITIZER}" STREQUAL "Undefined")
+      set(LIBFILE "libclang_rt.ubsan_osx_dynamic.dylib")
+    elseif("${LLVM_USE_SANITIZER}" STREQUAL "Thread")
+      set(LIBFILE "libclang_rt.tsan_osx_dynamic.dylib")
+    else()
+      message(WARNING "LLVM_USE_SANITIZER=${LLVM_USE_SANITIZER} is not supported on OS X")
+    endif()
+    if (LIBFILE)
+      find_compiler_rt_library(builtins LIBCXXABI_BUILTINS_LIBRARY)
+      get_filename_component(LIBDIR "${LIBCXXABI_BUILTINS_LIBRARY}" DIRECTORY)
+      if (NOT IS_DIRECTORY "${LIBDIR}")
+        message(FATAL_ERROR "Cannot find compiler-rt directory on OS X required for LLVM_USE_SANITIZER")
+      endif()
+      set(LIBCXXABI_SANITIZER_LIBRARY "${LIBDIR}/${LIBFILE}")
+      set(LIBCXXABI_SANITIZER_LIBRARY "${LIBCXXABI_SANITIZER_LIBRARY}" PARENT_SCOPE)
+      message(STATUS "Manually linking compiler-rt library: ${LIBCXXABI_SANITIZER_LIBRARY}")
+      add_library_flags("${LIBCXXABI_SANITIZER_LIBRARY}")
+      add_link_flags("-Wl,-rpath,${LIBDIR}")
+    endif()
+  endif()
+
+  # Make sure we link in CrashReporterClient if we find it -- it's used by
+  # abort() on Apple platforms when building the system dylib.
+  find_library(CrashReporterClient NAMES libCrashReporterClient.a
+                                   PATHS "${CMAKE_OSX_SYSROOT}/usr/local/lib")
+  if (CrashReporterClient)
+    message(STATUS "Linking with CrashReporterClient at ${CrashReporterClient}")
+    add_library_flags("${CrashReporterClient}")
+  else()
+    message(STATUS "Could not find CrashReporterClient, not linking against it")
+  endif()
+endif()
+
+split_list(LIBCXXABI_COMPILE_FLAGS)
+split_list(LIBCXXABI_LINK_FLAGS)
+
+# FIXME: libc++abi.so will not link when modules are enabled because it depends
+# on symbols defined in libc++.so which has not yet been built.
+if (LLVM_ENABLE_MODULES)
+  string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
+endif()
+
+if (NOT TARGET pstl::ParallelSTL)
+  message(STATUS "Could not find ParallelSTL, libc++abi will not attempt to use it but the build may fail if the libc++ in use needs it to be available.")
+endif()
+
+if (LIBCXXABI_STATIC_DEMANGLE_LIBRARY)
+  add_library(cxxabi_demangle_static STATIC cxa_demangle.cpp ${LIBCXXABI_HEADERS})
+  target_link_libraries(cxxabi_demangle_static PRIVATE cxx-headers cxxabi-headers)
+  set_target_properties(cxxabi_demangle_static
+    PROPERTIES
+      CXX_EXTENSIONS OFF
+      CXX_STANDARD 20
+      CXX_STANDARD_REQUIRED OFF
+      COMPILE_FLAGS "${LIBCXXABI_COMPILE_FLAGS}"
+      LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
+      OUTPUT_NAME "c++demangle"
+    )
+  list(APPEND LIBCXXABI_BUILD_TARGETS "cxxabi_demangle_static")
+  if (LIBCXXABI_INSTALL_STATIC_LIBRARY)
+    list(APPEND LIBCXXABI_INSTALL_TARGETS "cxxabi_demangle_static")
+  endif()
+endif()
+
+# Build the shared library.
+add_library(cxxabi_shared_objects OBJECT EXCLUDE_FROM_ALL ${LIBCXXABI_SOURCES} ${LIBCXXABI_HEADERS})
+if (LIBCXXABI_USE_LLVM_UNWINDER)
+  if (LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_SHARED_LIBRARY)
+    target_link_libraries(cxxabi_shared_objects PUBLIC unwind_shared_objects) # propagate usage requirements
+    target_sources(cxxabi_shared_objects PUBLIC $<TARGET_OBJECTS:unwind_shared_objects>)
+  else()
+    target_link_libraries(cxxabi_shared_objects PUBLIC unwind_shared)
+  endif()
+endif()
+target_link_libraries(cxxabi_shared_objects PRIVATE cxx-headers ${LIBCXXABI_BUILTINS_LIBRARY} ${LIBCXXABI_SHARED_LIBRARIES} ${LIBCXXABI_LIBRARIES})
+target_link_libraries(cxxabi_shared_objects PUBLIC cxxabi-headers)
+set_target_properties(cxxabi_shared_objects
+  PROPERTIES
+    CXX_EXTENSIONS OFF
+    CXX_STANDARD 20
+    CXX_STANDARD_REQUIRED OFF
+    COMPILE_FLAGS "${LIBCXXABI_COMPILE_FLAGS}"
+    DEFINE_SYMBOL ""
+)
+if (CMAKE_POSITION_INDEPENDENT_CODE OR NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
+  set_target_properties(cxxabi_shared_objects PROPERTIES POSITION_INDEPENDENT_CODE ON) # must set manually because it's an object library
+endif()
+
+if (LIBCXXABI_ENABLE_SHARED)
+  add_library(cxxabi_shared SHARED)
+  set_target_properties(cxxabi_shared
+    PROPERTIES
+      LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
+      OUTPUT_NAME "${LIBCXXABI_SHARED_OUTPUT_NAME}"
+      SOVERSION "1"
+      VERSION "${LIBCXXABI_LIBRARY_VERSION}"
+  )
+
+  if (ZOS)
+    add_custom_command(TARGET cxxabi_shared POST_BUILD
+      COMMAND
+        ${LIBCXXABI_LIBCXX_PATH}/utils/zos_rename_dll_side_deck.sh
+        $<TARGET_LINKER_FILE_NAME:cxxabi_shared> $<TARGET_FILE_NAME:cxxabi_shared> "${LIBCXXABI_DLL_NAME}"
+      COMMENT "Rename dll name inside the side deck file"
+      WORKING_DIRECTORY $<TARGET_FILE_DIR:cxxabi_shared>
+    )
+  endif ()
+
+  target_link_libraries(cxxabi_shared
+    PUBLIC cxxabi_shared_objects
+    PRIVATE ${LIBCXXABI_SHARED_LIBRARIES} ${LIBCXXABI_LIBRARIES})
+  if (TARGET pstl::ParallelSTL)
+    target_link_libraries(cxxabi_shared PUBLIC pstl::ParallelSTL)
+  endif()
+
+  list(APPEND LIBCXXABI_BUILD_TARGETS "cxxabi_shared")
+  if (LIBCXXABI_INSTALL_SHARED_LIBRARY)
+    list(APPEND LIBCXXABI_INSTALL_TARGETS "cxxabi_shared")
+  endif()
+
+  add_library(cxxabi-reexports INTERFACE)
+
+  # -exported_symbols_list is only available on Apple platforms
+  if (APPLE)
+    function(export_symbols file)
+      target_link_libraries(cxxabi_shared PRIVATE "-Wl,-exported_symbols_list,${file}")
+    endfunction()
+    function(reexport_symbols file)
+      export_symbols("${file}")
+      target_link_libraries(cxxabi-reexports INTERFACE "-Wl,-reexported_symbols_list,${file}")
+    endfunction()
+
+    export_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/itanium-base.exp")
+
+    if (LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
+      reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/new-delete.exp")
+    endif()
+
+    if (LIBCXXABI_ENABLE_EXCEPTIONS)
+      reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/exceptions.exp")
+
+      if ("${CMAKE_OSX_ARCHITECTURES}" MATCHES "^(armv6|armv7|armv7s)$")
+        reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/personality-sjlj.exp")
+      else()
+        reexport_symbols("${CMAKE_CURRENT_SOURCE_DIR}/../lib/personality-v0.exp")
+      endif()
+    endif()
+  endif()
+endif()
+
+# Build the static library.
+add_library(cxxabi_static_objects OBJECT EXCLUDE_FROM_ALL ${LIBCXXABI_SOURCES} ${LIBCXXABI_HEADERS})
+if (LIBCXXABI_USE_LLVM_UNWINDER AND LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY)
+  target_link_libraries(cxxabi_static_objects PUBLIC unwind_static_objects) # propagate usage requirements
+  target_sources(cxxabi_static_objects PUBLIC $<TARGET_OBJECTS:unwind_static_objects>)
+endif()
+target_link_libraries(cxxabi_static_objects PRIVATE cxx-headers ${LIBCXXABI_STATIC_LIBRARIES} ${LIBCXXABI_LIBRARIES})
+target_link_libraries(cxxabi_static_objects PUBLIC cxxabi-headers)
+set_target_properties(cxxabi_static_objects
+  PROPERTIES
+    CXX_EXTENSIONS OFF
+    CXX_STANDARD 20
+    CXX_STANDARD_REQUIRED OFF
+    COMPILE_FLAGS "${LIBCXXABI_COMPILE_FLAGS}"
+)
+
+if(LIBCXXABI_HERMETIC_STATIC_LIBRARY)
+  target_add_compile_flags_if_supported(cxxabi_static_objects PRIVATE -fvisibility=hidden)
+  # If the hermetic library doesn't define the operator new/delete functions
+  # then its code shouldn't declare them with hidden visibility.  They might
+  # actually be provided by a shared library at link time.
+  if (LIBCXXABI_ENABLE_NEW_DELETE_DEFINITIONS)
+    target_add_compile_flags_if_supported(cxxabi_static_objects PRIVATE -fvisibility-global-new-delete-hidden)
+  endif()
+  # _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS can be defined in libcxx's
+  # __config_site too. Define it in the same way here, to avoid redefinition
+  # conflicts.
+  target_compile_definitions(cxxabi_static_objects
+    PRIVATE
+      _LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS
+      _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS=)
+endif()
+
+if (LIBCXXABI_ENABLE_STATIC)
+  add_library(cxxabi_static STATIC)
+  if (LIBCXXABI_USE_LLVM_UNWINDER AND NOT LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY)
+    target_link_libraries(cxxabi_static PUBLIC unwind_static)
+  endif()
+  set_target_properties(cxxabi_static
+    PROPERTIES
+      LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
+      OUTPUT_NAME "${LIBCXXABI_STATIC_OUTPUT_NAME}"
+    )
+  target_link_libraries(cxxabi_static
+    PUBLIC cxxabi_static_objects
+    PRIVATE ${LIBCXXABI_STATIC_LIBRARIES} ${LIBCXXABI_LIBRARIES})
+  if (TARGET pstl::ParallelSTL)
+    target_link_libraries(cxxabi_static PUBLIC pstl::ParallelSTL)
+  endif()
+
+  list(APPEND LIBCXXABI_BUILD_TARGETS "cxxabi_static")
+  if (LIBCXXABI_INSTALL_STATIC_LIBRARY)
+    list(APPEND LIBCXXABI_INSTALL_TARGETS "cxxabi_static")
+  endif()
+endif()
+
+# Add a meta-target for both libraries.
+add_custom_target(cxxabi DEPENDS ${LIBCXXABI_BUILD_TARGETS})
+
+if (LIBCXXABI_INSTALL_LIBRARY)
+  install(TARGETS ${LIBCXXABI_INSTALL_TARGETS}
+    LIBRARY DESTINATION ${LIBCXXABI_INSTALL_LIBRARY_DIR} COMPONENT cxxabi
+    ARCHIVE DESTINATION ${LIBCXXABI_INSTALL_LIBRARY_DIR} COMPONENT cxxabi
+    RUNTIME DESTINATION ${LIBCXXABI_INSTALL_RUNTIME_DIR} COMPONENT cxxabi
+    )
+endif()
+
+if (NOT CMAKE_CONFIGURATION_TYPES AND LIBCXXABI_INSTALL_LIBRARY)
+  add_custom_target(install-cxxabi
+    DEPENDS cxxabi install-cxxabi-headers
+    COMMAND "${CMAKE_COMMAND}"
+            -DCMAKE_INSTALL_COMPONENT=cxxabi
+            -P "${LIBCXXABI_BINARY_DIR}/cmake_install.cmake")
+  add_custom_target(install-cxxabi-stripped
+    DEPENDS cxxabi
+    COMMAND "${CMAKE_COMMAND}"
+            -DCMAKE_INSTALL_COMPONENT=cxxabi
+            -DCMAKE_INSTALL_DO_STRIP=1
+            -P "${LIBCXXABI_BINARY_DIR}/cmake_install.cmake")
+endif()
diff --git a/app/src/main/cpp/libcxx/src/abi/abort_message.cpp b/app/src/main/cpp/libcxx/src/abi/abort_message.cpp
new file mode 100644
index 0000000..859a503
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/abort_message.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include "abort_message.h"
+
+#ifdef __BIONIC__
+#   include <android/api-level.h>
+#   if __ANDROID_API__ >= 21
+#       include <syslog.h>
+        extern "C" void android_set_abort_message(const char* msg);
+#   else
+#       include <assert.h>
+#   endif // __ANDROID_API__ >= 21
+#endif // __BIONIC__
+
+#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
+#   include <CrashReporterClient.h>
+#   define _LIBCXXABI_USE_CRASHREPORTER_CLIENT
+#endif
+
+void abort_message(const char* format, ...)
+{
+    // Write message to stderr. We do this before formatting into a
+    // variable-size buffer so that we still get some information if
+    // formatting into the variable-sized buffer fails.
+#if !defined(NDEBUG) || !defined(LIBCXXABI_BAREMETAL)
+    {
+        fprintf(stderr, "libc++abi: ");
+        va_list list;
+        va_start(list, format);
+        vfprintf(stderr, format, list);
+        va_end(list);
+        fprintf(stderr, "\n");
+    }
+#endif
+
+    // Format the arguments into an allocated buffer. We leak the buffer on
+    // purpose, since we're about to abort() anyway.
+#if defined(_LIBCXXABI_USE_CRASHREPORTER_CLIENT)
+    char* buffer;
+    va_list list;
+    va_start(list, format);
+    vasprintf(&buffer, format, list);
+    va_end(list);
+
+    CRSetCrashLogMessage(buffer);
+#elif defined(__BIONIC__)
+    char* buffer;
+    va_list list;
+    va_start(list, format);
+    vasprintf(&buffer, format, list);
+    va_end(list);
+
+#   if __ANDROID_API__ >= 21
+    // Show error in tombstone.
+    android_set_abort_message(buffer);
+
+    // Show error in logcat.
+    openlog("libc++abi", 0, 0);
+    syslog(LOG_CRIT, "%s", buffer);
+    closelog();
+#   else
+    // The good error reporting wasn't available in Android until L. Since we're
+    // about to abort anyway, just call __assert2, which will log _somewhere_
+    // (tombstone and/or logcat) in older releases.
+    __assert2(__FILE__, __LINE__, __func__, buffer);
+#   endif // __ANDROID_API__ >= 21
+#endif // __BIONIC__
+
+    abort();
+}
diff --git a/app/src/main/cpp/libcxx/src/abi/abort_message.h b/app/src/main/cpp/libcxx/src/abi/abort_message.h
new file mode 100644
index 0000000..f1d5c12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/abort_message.h
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __ABORT_MESSAGE_H_
+#define __ABORT_MESSAGE_H_
+
+#include "cxxabi.h"
+
+extern "C" _LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN void
+abort_message(const char *format, ...) __attribute__((format(printf, 1, 2)));
+
+#endif
diff --git a/app/src/main/cpp/libcxx/src/abi/aix_state_tab_eh.inc b/app/src/main/cpp/libcxx/src/abi/aix_state_tab_eh.inc
new file mode 100644
index 0000000..128a0ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/aix_state_tab_eh.inc
@@ -0,0 +1,718 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the personality and helper functions for the state
+//  table based EH used by IBM legacy compilers xlC and xlclang++ on AIX.
+//
+//===----------------------------------------------------------------------===//
+
+#include <new>
+#include <stdio.h>
+#include <sys/debug.h>
+
+#if !__has_cpp_attribute(clang::optnone)
+#error This file requires clang::optnone attribute support
+#endif
+
+/*
+  The legacy IBM xlC and xlclang++ compilers use the state table for EH
+  instead of the range table. Destructors, or addresses of the possible catch
+  sites or cleanup code are specified in the state table which is a finite
+  state machine (FSM). Each function that has a state table also has an
+  autolocal state variable. The state variable represents the current state
+  of the function for EH and is found through the traceback table of the
+  function during unwinding, which is located at the end of each function.
+  The FSM is an array of state entries. Each state entry has the following
+  fields:
+
+  * offset/address/pointer - the offset used to locate the object, or the
+    address of a global object, or the address of the next state if it is an
+    old conditional state change entry;
+  * dtor/landing pad - address of the destructor function to invoke,
+    or address of the catch block or cleanup code in the user code to branch to;
+  * element count/action flag - the number of elements or the flag for actions;
+  * element size - if the object is an array this is the size of one element
+    of the array;
+  * flags - flags used to control how fields in the entry are interpreted;
+  * next state - the state to execute next after the action for this state is
+    performed. The value of zero indicates the end of the state for this
+    function.
+
+  The following is the description of 'element count/action flag' field.
++-----------------------------------------------------------------------------+
+| value |      description       |                  action                    |
++-------+------------------------+--------------------------------------------+
+| > 1   |   object is an array   | calls __cxa_vec_cleanup to run dtor for    |
+|       |                        | each member of the array                   |
++-------+------------------------+--------------------------------------------+
+| 1, 0  |   object is a scalar   | calls dtor for the object                  |
++-------+------------------------+--------------------------------------------+
+|  -1   |      begin catch       | branches to the handler which performes    |
+|       |                        | catch-match. If there is no catch that     |
+|       |                        | matches the exception it will be rethrown  |
++-------+------------------------+--------------------------------------------+
+|  -2   |       end catch        | ends current catch block and continues     |
+|       |                        | attempting to catch the exception          |
++-------+------------------------+--------------------------------------------+
+|  -3   |   delete the object    | calls the delete function of the object    |
++-------+------------------------+--------------------------------------------+
+|  -4   |      cleanup label     | branches to the user code for cleaning up  |
++-------+------------------------+--------------------------------------------+
+*/
+
+namespace __cxxabiv1 {
+
+extern "C" {
+
+// Macros for debugging the state table parsing.
+#ifdef NDEBUG
+#  define _LIBCXXABI_TRACE_STATETAB(msg, ...)
+#  define _LIBCXXABI_TRACE_STATETAB0(msg)
+#  define _LIBCXXABI_TRACE_STATETAB1(msg)
+#  define _LIBCXXABI_TRACING_STATETAB 0
+#else
+static bool state_tab_dbg() {
+  static bool checked = false;
+  static bool log = false;
+  if (!checked) {
+    log = (getenv("LIBCXXABI_PRINT_STATTAB") != NULL);
+    checked = true;
+  }
+  return log;
+}
+
+#  define _LIBCXXABI_TRACE_STATETAB(msg, ...)                                  \
+     do {                                                                      \
+       if (state_tab_dbg())                                                    \
+         fprintf(stderr, "libcxxabi: " msg, __VA_ARGS__);                      \
+     } while (0)
+#  define _LIBCXXABI_TRACE_STATETAB0(msg)                                      \
+     do {                                                                      \
+       if (state_tab_dbg())                                                    \
+         fprintf(stderr, "libcxxabi: " msg);                                   \
+     } while (0)
+#  define _LIBCXXABI_TRACE_STATETAB1(msg)                                      \
+     do {                                                                      \
+       if (state_tab_dbg())                                                    \
+         fprintf(stderr, msg);                                                 \
+     } while (0)
+
+#  define _LIBCXXABI_TRACING_STATETAB state_tab_dbg()
+#endif // NDEBUG
+
+namespace __state_table_eh {
+
+using destruct_f = void (*)(void*);
+
+// Definition of flags for the state table entry field 'action flag'.
+enum FSMEntryCount : intptr_t { beginCatch = -1, endCatch = -2, deleteObject = -3, cleanupLabel = -4, terminate = -5 };
+
+// Definition of flags for the state table entry field 'flags'.
+enum FSMEntryFlag : int16_t {
+  indirect = 0x100,                  // Object was thrown from a function where
+                                     // the return value optimization was used.
+  oldConditionalStateChange = 0x400, // State table entry is an indirect state
+                                     // change, dereference the address in
+                                     // offset as int for the target state.
+                                     // This is deprecated. This indicates
+                                     // the address is direct. (static local).
+  conditionalStateChange = 0x800,    // State table entry is an indirect state
+                                     // change, dereference the address in
+                                     // offset as int for the target state.
+                                     // The temporary is an automatic. State
+                                     // change is used in cases such as
+                                     // (b?(T1(),foo()):(T2(),foo())),throw 42;
+                                     // which causes a conditional state change
+                                     // so that we know if T1 or T2 need to be
+                                     // destroyed.
+  thisFlag = 0x01,                   // The address of the object for the
+                                     // cleanup action is based on the
+                                     // StateVariable::thisValue.
+  vBaseFlag = 0x02,                  // The object is of a virtual base class.
+  globalObj = 0x04                   // FSMEntry::address is the address of
+                                     // a global object.
+};
+
+namespace {
+// The finite state machine to be walked.
+struct FSMEntry {
+  union {
+    // Offset of the object within its stack frame or containing object.
+    intptr_t offset;
+    // Address of a global object.
+    intptr_t address;
+    // Address of the next state if it is an old conditional state change entry.
+    intptr_t nextStatePtr;
+  };
+  union {
+    // Address of the destructor function.
+    void (*destructor)(void*, size_t);
+    // The address of the catch block or cleanup code.
+    void* landingPad;
+  };
+  union {
+    // The flag for actions (when the value is negative).
+    FSMEntryCount actionFlag;
+    // The element count (when the value is positive or zero).
+    size_t elementCount;
+  };
+  size_t elemSize;
+  FSMEntryFlag flags;
+  uint16_t nextState;
+};
+
+struct FSM {
+  uint32_t magic; // Magic number of the state table.
+  int32_t numberOfStates;
+  FSMEntry table[1]; // Actually table[numberOfStates].
+};
+
+// The state variable on the stack.
+struct StateVariable {
+  int32_t state;
+  struct FSM* table;
+  intptr_t thisValue;
+  int32_t ignoreVBasePtrs;
+};
+} // namespace
+
+// State table magic number
+enum FSMMagic : uint32_t {
+  number = 0xbeefdead,  // State table generated by xlC compiler.
+  number2 = 0xbeeedead, // State table generated by early version xlC compiler.
+  number3 = 0x1cedbeef  // State table generated by xlclang++ compiler.
+};
+
+constexpr size_t dtorArgument = 0x02; // Flag to destructor indicating to free
+                                      // virtual bases, don't delete object.
+
+static void invoke_destructor(FSMEntry* fsmEntry, void* addr) {
+  _LIBCXXABI_TRACE_STATETAB("Destruct object=%p, fsmEntry=%p\n", addr, reinterpret_cast<void*>(fsmEntry));
+  try {
+    if (fsmEntry->elementCount == 1) {
+      _LIBCXXABI_TRACE_STATETAB0("calling scalar destructor\n");
+      (*fsmEntry->destructor)(addr, dtorArgument);
+      _LIBCXXABI_TRACE_STATETAB0("returned from scalar destructor\n");
+    } else {
+      _LIBCXXABI_TRACE_STATETAB0("calling vector destructor\n");
+      __cxa_vec_cleanup(addr, reinterpret_cast<size_t>(fsmEntry->elementCount), fsmEntry->elemSize,
+                        reinterpret_cast<destruct_f>(fsmEntry->destructor));
+      _LIBCXXABI_TRACE_STATETAB0("returned from vector destructor\n");
+    }
+  } catch (...) {
+    _LIBCXXABI_TRACE_STATETAB0("Uncaught exception in destructor, terminating\n");
+    std::terminate();
+  }
+}
+
+static void invoke_delete(FSMEntry* fsmEntry, void* addr) {
+  char* objectAddress = *reinterpret_cast<char**>(addr);
+
+  _LIBCXXABI_TRACE_STATETAB("Delete object=%p, fsmEntry=%p\n", reinterpret_cast<void*>(objectAddress),
+                            reinterpret_cast<void*>(fsmEntry));
+  try {
+    _LIBCXXABI_TRACE_STATETAB0("..calling delete()\n");
+    // 'destructor' holds a function pointer to delete().
+    (*fsmEntry->destructor)(objectAddress, fsmEntry->elemSize);
+    _LIBCXXABI_TRACE_STATETAB0("..returned from delete()\n");
+  } catch (...) {
+    _LIBCXXABI_TRACE_STATETAB0("Uncaught exception in delete(), terminating\n");
+    std::terminate();
+  }
+}
+
+// Get the frame address of the current function from its traceback table
+// which is at the end of each function.
+static uintptr_t get_frame_addr(_Unwind_Context* context) {
+  int framePointerReg = 1; // default frame pointer == SP.
+  uint32_t* p = reinterpret_cast<uint32_t*>(_Unwind_GetIP(context));
+
+  // Keep looking forward until a word of 0 is found. The traceback
+  // table starts at the following word.
+  while (*p)
+    ++p;
+  tbtable* TBTable = reinterpret_cast<tbtable*>(p + 1);
+
+  p = reinterpret_cast<uint32_t*>(&TBTable->tb_ext);
+
+  // Skip field parminfo if it exists.
+  if (TBTable->tb.fixedparms || TBTable->tb.floatparms)
+    ++p;
+
+  // Skip field tb_offset if it exists.
+  if (TBTable->tb.has_tboff)
+    ++p;
+
+  // Skip field hand_mask if it exists.
+  if (TBTable->tb.int_hndl)
+    ++p;
+
+  // Skip fields ctl_info and ctl_info_disp if they exist.
+  if (TBTable->tb.has_ctl)
+    p += 1 + *p;
+
+  // Skip fields name_len and name if exist.
+  if (TBTable->tb.name_present) {
+    const uint16_t name_len = *reinterpret_cast<uint16_t*>(p);
+    p = reinterpret_cast<uint32_t*>(reinterpret_cast<char*>(p) + name_len + sizeof(uint16_t));
+  }
+
+  if (TBTable->tb.uses_alloca)
+    framePointerReg = *reinterpret_cast<char*>(p);
+
+  return _Unwind_GetGR(context, framePointerReg);
+}
+
+// Calculate the object address from the FSM entry.
+static void* compute_addr_from_table(FSMEntry* fsmEntry, StateVariable* const state, _Unwind_Context* context) {
+  void* addr;
+  if (fsmEntry->flags & FSMEntryFlag::globalObj) {
+    addr = reinterpret_cast<void*>(fsmEntry->address);
+    _LIBCXXABI_TRACE_STATETAB("Address calculation (global obj) addr=fsmEntry->address=%p\n", addr);
+  } else if (fsmEntry->flags & FSMEntryFlag::thisFlag) {
+    addr = reinterpret_cast<void*>(state->thisValue + fsmEntry->offset);
+    _LIBCXXABI_TRACE_STATETAB("Address calculation (this obj) fsmEntry->offset=%ld : "
+                              "state->thisValue=%ld addr=(fsmEntry->offset+state->thisValue)=%p\n",
+                              fsmEntry->offset, state->thisValue, addr);
+  } else if (fsmEntry->flags & FSMEntryFlag::indirect) {
+    addr = reinterpret_cast<void*>(
+        *reinterpret_cast<char**>(get_frame_addr(context) + static_cast<uintptr_t>(fsmEntry->offset)));
+    _LIBCXXABI_TRACE_STATETAB("Address calculation (indirect obj) addr=%p, fsmEntry->offset=%ld \n",
+                              addr, fsmEntry->offset);
+  } else {
+    addr = reinterpret_cast<void*>(get_frame_addr(context) + static_cast<uintptr_t>(fsmEntry->offset));
+    _LIBCXXABI_TRACE_STATETAB("Address calculation. (local obj) addr=fsmEntry->offset=%p\n",
+                              addr);
+  }
+  return addr;
+}
+
+static void scan_state_tab(scan_results& results, _Unwind_Action actions, bool native_exception,
+                           _Unwind_Exception* unwind_exception, _Unwind_Context* context) {
+  // Initialize results to found nothing but an error.
+  results.ttypeIndex = 0;
+  results.actionRecord = 0;
+  results.languageSpecificData = 0;
+  results.landingPad = 0;
+  results.adjustedPtr = 0;
+  results.reason = _URC_FATAL_PHASE1_ERROR;
+
+  // Check for consistent actions.
+  if (actions & _UA_SEARCH_PHASE) {
+    // Do Phase 1
+    if (actions & (_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME | _UA_FORCE_UNWIND)) {
+      // None of these flags should be set during Phase 1.
+      //   Client error
+      results.reason = _URC_FATAL_PHASE1_ERROR;
+      return;
+    }
+  } else if (actions & _UA_CLEANUP_PHASE) {
+    if ((actions & _UA_HANDLER_FRAME) && (actions & _UA_FORCE_UNWIND)) {
+      // _UA_HANDLER_FRAME should only be set if phase 1 found a handler.
+      // If _UA_FORCE_UNWIND is set, phase 1 shouldn't have happened.
+      //    Client error
+      results.reason = _URC_FATAL_PHASE2_ERROR;
+      return;
+    }
+  } else {
+    // Neither _UA_SEARCH_PHASE nor _UA_CLEANUP_PHASE is set.
+    //   Client error
+    results.reason = _URC_FATAL_PHASE1_ERROR;
+    return;
+  }
+
+  if (_LIBCXXABI_TRACING_STATETAB) {
+    _LIBCXXABI_TRACE_STATETAB1("\n");
+    _LIBCXXABI_TRACE_STATETAB("%s: actions=%d (", __func__, actions);
+
+    if (_UA_SEARCH_PHASE & actions)
+      _LIBCXXABI_TRACE_STATETAB1("_UA_SEARCH_PHASE ");
+    if (_UA_CLEANUP_PHASE & actions)
+      _LIBCXXABI_TRACE_STATETAB1("_UA_CLEANUP_PHASE ");
+    if (_UA_HANDLER_FRAME & actions)
+      _LIBCXXABI_TRACE_STATETAB1("_UA_HANDLER_FRAME ");
+    if (_UA_FORCE_UNWIND & actions)
+      _LIBCXXABI_TRACE_STATETAB1("_UA_FORCE_UNWIND ");
+    _LIBCXXABI_TRACE_STATETAB1(")\n");
+    _LIBCXXABI_TRACE_STATETAB("       unwind_exception=%p context=%p\n", reinterpret_cast<void*>(unwind_exception),
+                              reinterpret_cast<void*>(context));
+  }
+
+  // Start scan by getting state table address.
+  StateVariable* const state = reinterpret_cast<StateVariable* const>(_Unwind_GetLanguageSpecificData(context));
+  if (state->state <= 0) {
+    // The state is not correct - give up on this routine.
+    _LIBCXXABI_TRACE_STATETAB("state=%d and is <= 0), continue unwinding\n", state->state);
+    results.reason = _URC_CONTINUE_UNWIND;
+    return;
+  }
+  // Parse the state table.
+  FSM* const fsm = state->table;
+  FSMEntry* currFSMEntry;
+
+  if (fsm->magic != FSMMagic::number && fsm->magic != FSMMagic::number2 && fsm->magic != FSMMagic::number3) {
+    // Something is wrong with the state table we found.
+    if (_UA_SEARCH_PHASE & actions) {
+      _LIBCXXABI_TRACE_STATETAB0("Invalid FSM table, return _URC_FATAL_PHASE1_ERROR\n");
+      results.reason = _URC_FATAL_PHASE1_ERROR;
+    } else if (_UA_CLEANUP_PHASE & actions) {
+      _LIBCXXABI_TRACE_STATETAB0("Invalid FSM table, return _URC_FATAL_PHASE2_ERROR\n");
+      results.reason = _URC_FATAL_PHASE2_ERROR;
+    } else {
+      // We should never get here.
+      _LIBCXXABI_TRACE_STATETAB0("Invalid FSM table + RT Internal error, return _URC_FATAL_PHASE2_ERROR\n");
+      results.reason = _URC_FATAL_PHASE2_ERROR;
+    }
+    return;
+  }
+
+  if (_LIBCXXABI_TRACING_STATETAB) {
+    // Print the state table for debugging purposes.
+    _LIBCXXABI_TRACE_STATETAB("state->state=%d, state->ignoreVBasePtrs=%d\n", state->state, state->ignoreVBasePtrs);
+    _LIBCXXABI_TRACE_STATETAB("fsm->magic=%#x, fsm->numberOfStates=%d\n", fsm->magic, fsm->numberOfStates);
+    // Print out the FSM table.
+    _LIBCXXABI_TRACE_STATETAB0("FSM table:\n");
+    _LIBCXXABI_TRACE_STATETAB("%12s %10s %8s  %10s %7s %7s %7s %7s\n", "Entry Addr", "state", "Offset", "DTR/lpad",
+                              "count", "el_size", "flags", "next");
+    for (int i = 0; i < fsm->numberOfStates; i++) {
+      currFSMEntry = &fsm->table[i];
+      _LIBCXXABI_TRACE_STATETAB("%12p (%8d) %8ld  %10p %7ld "
+                                "%7ld %#7x %7d\n",
+                                reinterpret_cast<void*>(&currFSMEntry), i + 1, currFSMEntry->offset,
+                                reinterpret_cast<void*>(currFSMEntry->destructor),
+                                currFSMEntry->elementCount, currFSMEntry->elemSize, currFSMEntry->flags,
+                                currFSMEntry->nextState);
+    }
+  }
+
+  if (_UA_SEARCH_PHASE & actions) {
+    // Start walking the state table. Use a local copy of state->state so when
+    // we return from search phase we don't change the state number.
+    int currState = state->state;
+
+    while (currState > 0) {
+      currFSMEntry = &fsm->table[currState - 1];
+      _LIBCXXABI_TRACE_STATETAB("Processing state=%d, flags=0x%hx\n", currState, currFSMEntry->flags);
+
+      if (currFSMEntry->actionFlag == FSMEntryCount::beginCatch) {
+        // Found a catch handler.
+        if (fsm->magic == FSMMagic::number) {
+          _LIBCXXABI_TRACE_STATETAB0("Found a xlC catch handler, return _URC_FATAL_PHASE1_ERROR\n");
+          // xlC catch handlers cannot be entered because they use a
+          // proprietary EH runtime that is not interoperable.
+          results.reason = _URC_FATAL_PHASE1_ERROR;
+          return;
+        }
+        // xlclang++ compiled frames use CXA-abi EH calls and any catch
+        // block will include a catch(...) block so it is safe to assume that
+        // the handler is found without checking the catch match. The
+        // catch(...) block will rethrow the exception if there isn't a
+        // match.
+        _LIBCXXABI_TRACE_STATETAB0("Found a catch handler, return _URC_HANDLER_FOUND\n");
+        results.reason = _URC_HANDLER_FOUND;
+        return;
+      }
+      if (currFSMEntry->actionFlag == FSMEntryCount::terminate) {
+        _LIBCXXABI_TRACE_STATETAB0("Found the terminate state, return _URC_HANDLER_FOUND\n");
+        results.reason = _URC_HANDLER_FOUND;
+        return;
+      }
+      if (currFSMEntry->flags & FSMEntryFlag::oldConditionalStateChange) {
+        // Deprecated conditional expression.
+        currState = *reinterpret_cast<int*>(currFSMEntry->nextStatePtr);
+        _LIBCXXABI_TRACE_STATETAB("Flag: FSMEntryFlag::oldConditionalStateChange, dereference "
+                                  "currFSMEntry->nextStatePtr(%ld), set state=%d\n",
+                                  currFSMEntry->nextStatePtr, currState);
+        continue; // We are done this iteration of the loop, since
+                  // we changed a state.
+      }
+      if (currFSMEntry->flags & FSMEntryFlag::conditionalStateChange) {
+        void* addr = compute_addr_from_table(currFSMEntry, state, context);
+        currState = *reinterpret_cast<int*>(addr);
+        _LIBCXXABI_TRACE_STATETAB("Flag: FSMEntryFlag::conditionalStateChange, dereference "
+                                  "addr(%p), set state=%d\n", addr, currState);
+        continue; // We are done this iteration of the loop, since we
+                  // changed the state.
+      }
+      // Go to the next state.
+      currState = currFSMEntry->nextState;
+    }
+    _LIBCXXABI_TRACE_STATETAB0("No catch handler found, return _URC_CONTINUE_UNWIND\n");
+    results.reason = _URC_CONTINUE_UNWIND;
+    return;
+  }
+  if (_UA_CLEANUP_PHASE & actions) {
+    // Start walking the state table.
+    while (state->state > 0) {
+      currFSMEntry = &fsm->table[state->state - 1];
+
+      if (currFSMEntry->actionFlag == FSMEntryCount::terminate) {
+        _LIBCXXABI_TRACE_STATETAB0("Reached terminate state. Call terminate.\n");
+        std::terminate();
+      }
+      // Perform action according to the currFSMEntry->actionFlag,
+      // except when flag is FSMEntryFlag::conditionalStateChange or
+      // FSMEntryFlag::oldConditionalStateChange.
+      _LIBCXXABI_TRACE_STATETAB("Processing state=%d, flags=0x%hx\n", state->state, currFSMEntry->flags);
+      if (currFSMEntry->flags & FSMEntryFlag::oldConditionalStateChange) {
+        state->state = *reinterpret_cast<int*>(currFSMEntry->nextStatePtr);
+        _LIBCXXABI_TRACE_STATETAB("Flag: FSMEntryFlag::oldConditionalStateChange, dereference "
+                                  "currFSMEntry->nextStatePtr(%ld), set state=%d\n",
+                                  currFSMEntry->nextStatePtr, state->state);
+        continue; // We are done with this iteration of the loop, since we changed a state.
+      }
+      if (currFSMEntry->flags & FSMEntryFlag::conditionalStateChange) {
+        // A conditional state table entry holds the address of a local
+        // that holds the next state.
+        void* addr = compute_addr_from_table(currFSMEntry, state, context);
+        state->state = *reinterpret_cast<int*>(addr);
+        _LIBCXXABI_TRACE_STATETAB("Flag: FSMEntryFlag::conditionalStateChange, dereference "
+                                  "addr(%p), set state=%d\n", addr, state->state);
+        continue; // We are done with this iteration of the loop, since we changed a state.
+      }
+      if (currFSMEntry->actionFlag == FSMEntryCount::beginCatch || currFSMEntry->actionFlag == FSMEntryCount::endCatch ||
+          currFSMEntry->actionFlag == FSMEntryCount::cleanupLabel) {
+
+        _LIBCXXABI_TRACE_STATETAB(
+            "FSMEntryCount::%s: handler %p/%p, return _URC_HANDLER_FOUND\n",
+            (currFSMEntry->actionFlag == FSMEntryCount::beginCatch
+                 ? "beginCatch"
+                 : (currFSMEntry->actionFlag == FSMEntryCount::endCatch ? "endCatch" : "cleanupLabel")),
+            currFSMEntry->landingPad, *reinterpret_cast<void**>(currFSMEntry->landingPad));
+
+        state->state = currFSMEntry->nextState;
+        results.landingPad = reinterpret_cast<uintptr_t>(*reinterpret_cast<void**>(currFSMEntry->landingPad));
+        results.reason = _URC_HANDLER_FOUND;
+        return;
+      }
+      if (currFSMEntry->elementCount > 0) {
+        if (currFSMEntry->flags & FSMEntryFlag::vBaseFlag && state->ignoreVBasePtrs) {
+          _LIBCXXABI_TRACE_STATETAB0("Ignoring virtual base dtor.\n");
+        } else {
+          // We need to invoke the virtual base destructor. This must be
+          // a frame from the legacy xlC compiler as the xlclang++ compiler
+          // generates inline cleanup code rather than specifying
+          // the destructor via the state table.
+          void* addr = compute_addr_from_table(currFSMEntry, state, context);
+
+          // An extra indirect to get to the object according to the object
+          // model used by the xlC compiler.
+          addr = reinterpret_cast<void*>(*reinterpret_cast<char**>(addr));
+          _LIBCXXABI_TRACE_STATETAB("Invoke dtor for object=%p\n", addr);
+          invoke_destructor(currFSMEntry, addr);
+        }
+      } else if (currFSMEntry->actionFlag == FSMEntryCount::deleteObject) {
+        void* addr = compute_addr_from_table(currFSMEntry, state, context);
+        if (currFSMEntry->flags & FSMEntryFlag::vBaseFlag) {
+          // We need to invoke the virtual base delete function. This must be
+          // a frame from the legacy xlC compiler as the xlclang++ compiler
+          // generates inline cleanup code rather than specifying
+          // the delete function via the state table.
+
+          // An extra indirect to get to the object according to the object
+          // model used by the xlC compiler.
+          addr = reinterpret_cast<void*>(*reinterpret_cast<char**>(addr));
+        }
+        _LIBCXXABI_TRACE_STATETAB("Delete object at %p\n", addr);
+        invoke_delete(currFSMEntry, addr);
+      } else {
+        _LIBCXXABI_TRACE_STATETAB("Unknown entry in FSM (count=%ld), ignored\n",
+                                  currFSMEntry->elementCount);
+      } // End of action switching.
+
+      // Go to next state.
+      state->state = currFSMEntry->nextState;
+    }
+    _LIBCXXABI_TRACE_STATETAB0("No catch handler, return _URC_CONTINUE_UNWIND\n");
+    results.reason = _URC_CONTINUE_UNWIND;
+    return;
+  }
+  _LIBCXXABI_TRACE_STATETAB0("No state table entry for this exception, call_terminate()\n");
+  // It is possible that no state table entry specify how to handle
+  // this exception. By spec, terminate it immediately.
+  call_terminate(native_exception, unwind_exception);
+}
+
+// Personality routine for EH using the state table.
+_LIBCXXABI_FUNC_VIS _Unwind_Reason_Code
+__xlcxx_personality_v0(int version, _Unwind_Action actions, uint64_t exceptionClass,
+                       _Unwind_Exception* unwind_exception, _Unwind_Context* context) {
+  if (version != 1 || unwind_exception == 0 || context == 0)
+    return _URC_FATAL_PHASE1_ERROR;
+
+  bool native_exception = (exceptionClass & get_vendor_and_language) == (kOurExceptionClass & get_vendor_and_language);
+  scan_results results;
+  scan_state_tab(results, actions, native_exception, unwind_exception, context);
+  if (actions & _UA_SEARCH_PHASE) {
+    // Phase 1 search:  All we're looking for in phase 1 is a handler that
+    //   halts unwinding
+    return results.reason;
+  }
+  if (actions & _UA_CLEANUP_PHASE) {
+    // Phase 2 cleanup:
+    if (results.reason == _URC_HANDLER_FOUND) {
+      // Store the address of unwind_exception in the stack field
+      // reserved for compilers (SP + 3 * sizeof(uintptr_t)) in the stack of
+      // the caller of the function containing the landing pad (within the link
+      // area for the call to the latter) for __xlc_exception_handle()
+      // to retrieve when it is called by the landing pad.
+      uintptr_t *currentSP = reinterpret_cast<uintptr_t*>(_Unwind_GetGR(context, 1));
+      uintptr_t *callersSP = reinterpret_cast<uintptr_t*>(currentSP[0]);
+      callersSP[3] = reinterpret_cast<uintptr_t>(unwind_exception);
+      _LIBCXXABI_TRACE_STATETAB("Handshake: set unwind_exception=%p in stack=%p\n", reinterpret_cast<void*>(unwind_exception), reinterpret_cast<void*>(callersSP));
+      // Jump to the handler.
+      _Unwind_SetIP(context, results.landingPad);
+      return _URC_INSTALL_CONTEXT;
+    }
+    // Did not find a handler. Return the results of the scan. Normally
+    // _URC_CONTINUE_UNWIND, but could have been _URC_FATAL_PHASE2_ERROR.
+    return results.reason;
+  }
+  // We were called improperly: neither a phase 1 or phase 2 search.
+  return _URC_FATAL_PHASE1_ERROR;
+}
+} // namespace __state_table_eh
+
+// The following are EH helper functions for xlclang++ compiled code.
+
+// __xlc_catch_matchv2
+// Check whether the thrown object matches the catch handler's exception
+// declaration. If there is a match, the function returns true with adjusted
+// address of the thrown object. Otherwise, returns false.
+_LIBCXXABI_FUNC_VIS bool
+__xlc_catch_matchv2(_Unwind_Exception* exceptionObject, std::type_info* catchTypeInfo, void*& obj) {
+  _LIBCXXABI_TRACE_STATETAB("Entering %s, exceptionObject=%p\n", __func__, reinterpret_cast<void*>(exceptionObject));
+
+  if (!__isOurExceptionClass(exceptionObject)) {
+    _LIBCXXABI_TRACE_STATETAB0("No match, not a C++ exception\n");
+    return false;
+  }
+
+  __cxa_exception* exceptionHeader = 0;
+
+  if (__getExceptionClass(exceptionObject) == kOurDependentExceptionClass) {
+    // Walk to the __cxa_dependent_exception primary exception for the
+    // exception object and its type_info.
+    __cxa_dependent_exception* dependentExceptionHeader =
+        reinterpret_cast<__cxa_dependent_exception*>(exceptionObject + 1) - 1;
+    exceptionHeader = reinterpret_cast<__cxa_exception*>(dependentExceptionHeader->primaryException) - 1;
+    _LIBCXXABI_TRACE_STATETAB("exceptionObject 0x%p is a dependent, primary 0x%p\n",
+                              reinterpret_cast<void*>(exceptionObject),
+                              reinterpret_cast<void*>(&exceptionHeader->unwindHeader));
+    exceptionObject = &exceptionHeader->unwindHeader;
+  } else {
+    _LIBCXXABI_TRACE_STATETAB("exceptionObject %p is NOT a dependent\n", reinterpret_cast<void*>(exceptionObject));
+    exceptionHeader = reinterpret_cast<__cxa_exception*>(exceptionObject + 1) - 1;
+  }
+
+  void* thrownObject = reinterpret_cast<void*>(exceptionObject + 1);
+  std::type_info* throwTypeInfo = exceptionHeader->exceptionType;
+
+  // Get the type info for the thrown type and this catch clause and
+  // see if the catch caluse can catch that type.
+
+  __cxxabiv1::__shim_type_info* catchType = reinterpret_cast<__cxxabiv1::__shim_type_info*>(catchTypeInfo);
+  __cxxabiv1::__shim_type_info* throwType = reinterpret_cast<__cxxabiv1::__shim_type_info*>(throwTypeInfo);
+  _LIBCXXABI_TRACE_STATETAB("UnwindException=%p, thrownObject=%p, throwTypeInfo=%p(%s), catchTypeInfo=%p(%s)\n",
+                            reinterpret_cast<void*>(exceptionObject), thrownObject, reinterpret_cast<void*>(throwType),
+                            throwType->name(), reinterpret_cast<void*>(catchType), catchType->name());
+  if (catchType->can_catch(throwType, thrownObject)) {
+    exceptionHeader->adjustedPtr = thrownObject;
+    obj = thrownObject;
+    _LIBCXXABI_TRACE_STATETAB("Match found for thrownObject=%p\n", thrownObject);
+    return true;
+  }
+  _LIBCXXABI_TRACE_STATETAB0("No match\n");
+  return false;
+}
+
+// __xlc_throw_badexception
+// This function is for xlclang++. It allocates and throws a bad_exception.
+// During unwinding for this bad_exception, the previous exception which is
+// not matching the throw spec will be cleaned up. Thus having the same
+// effect as replace the top most exception (which is bad) with a bad_exception.
+_LIBCXXABI_FUNC_VIS void __xlc_throw_badexception() {
+  _LIBCXXABI_TRACE_STATETAB("Entering function: %s\n\n", __func__);
+  void* newexception = new (__cxa_allocate_exception(sizeof(std::bad_exception))) std::bad_exception;
+  __cxa_throw(newexception, const_cast<std::type_info*>(&typeid(std::bad_exception)), 0);
+}
+
+// force_a_stackframe
+// This function is called by __xlc_exception_handle() to ensure a stack frame
+// is created for __xlc_exception_handle().
+__attribute__((noinline, optnone))
+static void force_a_stackframe() {}
+
+// __xlc_exception_handle
+// This function is for xlclang++. It returns the address of the exception
+// object stored in the reserved field in the stack of the caller of the
+// function that calls __xlc_exception_handle() (within the link area for the
+// call to the latter). The address is stored by the personality routine for
+// xlclang++ compiled code. The implementation of __xlc_exception_handle()
+// assumes a stack frame is created for it. The following ensures this
+// assumption holds true: 1) a call to force_a_stackframe() is made inside
+// __xlc_exception_handle() to make it non-leaf; and 2) optimizations are
+// disabled for this function with attribute 'optnone'. Note: this function
+// may not work as expected if these are changed.
+__attribute__((optnone))
+_LIBCXXABI_FUNC_VIS uintptr_t __xlc_exception_handle() {
+  // Make a call to force_a_stackframe() so that the compiler creates a stack
+  // frame for this function.
+  force_a_stackframe();
+
+  // Get the SP of this function, i.e., __xlc_exception_handle().
+  uintptr_t *lastStack;
+  asm("mr %0, 1" : "=r"(lastStack));
+  // Get the SP of the caller of __xlc_exception_handle().
+  uintptr_t *callerStack = reinterpret_cast<uintptr_t*>(lastStack[0]);
+  // Get the SP of the caller of the caller.
+  uintptr_t *callerStack2 = reinterpret_cast<uintptr_t*>(callerStack[0]);
+  uintptr_t exceptionObject = callerStack2[3];
+  _LIBCXXABI_TRACE_STATETAB("Handshake: exceptionObject=%p from stack=%p\n", reinterpret_cast<void*>(exceptionObject), reinterpret_cast<void*>(callerStack2));
+  return exceptionObject;
+}
+
+// xlclang++ may generate calls to __Deleted_Virtual.
+_LIBCXXABI_FUNC_VIS void __Deleted_Virtual() { abort(); }
+
+// __catchThrownException is called during AIX library initialization and
+// termination to handle exceptions.  An implementation is also provided in
+// libC.a(shrcore.o).  This implementation is provided for applications that
+// link with -lc++ (the xlclang++ or ibm-clang++ link default.)
+_LIBCXXABI_FUNC_VIS int
+__catchThrownException(void (*cdfunc)(void),   // function which may fail
+                       void (*cleanup)(void*), // cleanup function
+                       void* cleanuparg,       // parameter to cleanup function
+                       int action) {           // control exception throwing and termination
+  enum Action : int { None = 0, Rethrow = 1, Terminate = 2 };
+  if (!cdfunc)
+    return 0;
+  if (action == Action::Rethrow && !cleanup) {
+    // No cleanup and rethrow is effectively no-op.
+    // Avoid the catch handler when possible to allow exceptions generated
+    // from xlC binaries to flow through.
+    (*cdfunc)();
+    return 0;
+  }
+  try {
+    (*cdfunc)();
+  } catch (...) {
+    if (action == Action::Terminate)
+      std::terminate();
+    if (cleanup)
+      (*cleanup)(cleanuparg);
+    if (action == Action::Rethrow)
+      throw;
+    assert(action == Action::None);
+    return -1; // FAILED
+  }
+  return 0;
+}
+
+}  // extern "C"
+
+}  // __cxxabiv1
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_aux_runtime.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_aux_runtime.cpp
new file mode 100644
index 0000000..a42990c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_aux_runtime.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// This file implements the "Auxiliary Runtime APIs"
+// https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html#cxx-aux
+//===----------------------------------------------------------------------===//
+
+#include "cxxabi.h"
+#include <new>
+#include <typeinfo>
+
+namespace __cxxabiv1 {
+extern "C" {
+_LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_cast(void) {
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+  throw std::bad_cast();
+#else
+  std::terminate();
+#endif
+}
+
+_LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_typeid(void) {
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+  throw std::bad_typeid();
+#else
+  std::terminate();
+#endif
+}
+
+_LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
+__cxa_throw_bad_array_new_length(void) {
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+  throw std::bad_array_new_length();
+#else
+  std::terminate();
+#endif
+}
+} // extern "C"
+} // abi
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_default_handlers.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_default_handlers.cpp
new file mode 100644
index 0000000..7bcfca0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_default_handlers.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// This file implements the default terminate_handler, unexpected_handler and
+// new_handler.
+//===----------------------------------------------------------------------===//
+
+#include <exception>
+#include <memory>
+#include <stdlib.h>
+#include "abort_message.h"
+#include "cxxabi.h"
+#include "cxa_handlers.h"
+#include "cxa_exception.h"
+#include "private_typeinfo.h"
+#include "include/atomic_support.h" // from libc++
+
+#if !defined(LIBCXXABI_SILENT_TERMINATE)
+
+static constinit const char* cause = "uncaught";
+
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+// Demangle the given string, or return the string as-is in case of an error.
+static std::unique_ptr<char const, void (*)(char const*)> demangle(char const* str)
+{
+#if !defined(LIBCXXABI_NON_DEMANGLING_TERMINATE)
+    if (const char* result = __cxxabiv1::__cxa_demangle(str, nullptr, nullptr, nullptr))
+        return {result, [](char const* p) { std::free(const_cast<char*>(p)); }};
+#endif
+    return {str, [](char const*) { /* nothing to free */ }};
+}
+
+__attribute__((noreturn))
+static void demangling_terminate_handler()
+{
+    using namespace __cxxabiv1;
+    __cxa_eh_globals* globals = __cxa_get_globals_fast();
+
+    // If there is no uncaught exception, just note that we're terminating
+    if (!globals)
+        abort_message("terminating");
+
+    __cxa_exception* exception_header = globals->caughtExceptions;
+    if (!exception_header)
+        abort_message("terminating");
+
+    _Unwind_Exception* unwind_exception =
+        reinterpret_cast<_Unwind_Exception*>(exception_header + 1) - 1;
+
+    // If we're terminating due to a foreign exception
+    if (!__isOurExceptionClass(unwind_exception))
+        abort_message("terminating due to %s foreign exception", cause);
+
+    void* thrown_object =
+        __getExceptionClass(unwind_exception) == kOurDependentExceptionClass ?
+            ((__cxa_dependent_exception*)exception_header)->primaryException :
+            exception_header + 1;
+    const __shim_type_info* thrown_type =
+        static_cast<const __shim_type_info*>(exception_header->exceptionType);
+    auto name = demangle(thrown_type->name());
+    // If the uncaught exception can be caught with std::exception&
+    const __shim_type_info* catch_type =
+        static_cast<const __shim_type_info*>(&typeid(std::exception));
+    if (catch_type->can_catch(thrown_type, thrown_object))
+    {
+        // Include the what() message from the exception
+        const std::exception* e = static_cast<const std::exception*>(thrown_object);
+        abort_message("terminating due to %s exception of type %s: %s", cause, name.get(), e->what());
+    }
+    else
+    {
+        // Else just note that we're terminating due to an exception
+        abort_message("terminating due to %s exception of type %s", cause, name.get());
+    }
+}
+#else // !_LIBCXXABI_NO_EXCEPTIONS
+__attribute__((noreturn))
+static void demangling_terminate_handler()
+{
+    abort_message("terminating");
+}
+#endif // !_LIBCXXABI_NO_EXCEPTIONS
+
+__attribute__((noreturn))
+static void demangling_unexpected_handler()
+{
+    cause = "unexpected";
+    std::terminate();
+}
+
+static constexpr std::terminate_handler default_terminate_handler = demangling_terminate_handler;
+static constexpr std::terminate_handler default_unexpected_handler = demangling_unexpected_handler;
+#else // !LIBCXXABI_SILENT_TERMINATE
+static constexpr std::terminate_handler default_terminate_handler = ::abort;
+static constexpr std::terminate_handler default_unexpected_handler = std::terminate;
+#endif // !LIBCXXABI_SILENT_TERMINATE
+
+//
+// Global variables that hold the pointers to the current handler
+//
+_LIBCXXABI_DATA_VIS
+constinit std::terminate_handler __cxa_terminate_handler = default_terminate_handler;
+
+_LIBCXXABI_DATA_VIS
+constinit std::unexpected_handler __cxa_unexpected_handler = default_unexpected_handler;
+
+_LIBCXXABI_DATA_VIS
+constinit std::new_handler __cxa_new_handler = nullptr;
+
+namespace std
+{
+
+unexpected_handler
+set_unexpected(unexpected_handler func) noexcept
+{
+    if (func == 0)
+        func = default_unexpected_handler;
+    return __libcpp_atomic_exchange(&__cxa_unexpected_handler, func,
+                                    _AO_Acq_Rel);
+}
+
+terminate_handler
+set_terminate(terminate_handler func) noexcept
+{
+    if (func == 0)
+        func = default_terminate_handler;
+    return __libcpp_atomic_exchange(&__cxa_terminate_handler, func,
+                                    _AO_Acq_Rel);
+}
+
+new_handler
+set_new_handler(new_handler handler) noexcept
+{
+    return __libcpp_atomic_exchange(&__cxa_new_handler, handler, _AO_Acq_Rel);
+}
+
+}
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_demangle.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_demangle.cpp
new file mode 100644
index 0000000..7baac68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_demangle.cpp
@@ -0,0 +1,407 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FIXME: (possibly) incomplete list of features that clang mangles that this
+// file does not yet support:
+//   - C++ modules TS
+
+#include "demangle/ItaniumDemangle.h"
+#include "__cxxabi_config.h"
+#include <cassert>
+#include <cctype>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <functional>
+#include <numeric>
+#include <utility>
+
+using namespace itanium_demangle;
+
+constexpr const char *itanium_demangle::FloatData<float>::spec;
+constexpr const char *itanium_demangle::FloatData<double>::spec;
+constexpr const char *itanium_demangle::FloatData<long double>::spec;
+
+// <discriminator> := _ <non-negative number>      # when number < 10
+//                 := __ <non-negative number> _   # when number >= 10
+//  extension      := decimal-digit+               # at the end of string
+const char *itanium_demangle::parse_discriminator(const char *first,
+                                                  const char *last) {
+  // parse but ignore discriminator
+  if (first != last) {
+    if (*first == '_') {
+      const char *t1 = first + 1;
+      if (t1 != last) {
+        if (std::isdigit(*t1))
+          first = t1 + 1;
+        else if (*t1 == '_') {
+          for (++t1; t1 != last && std::isdigit(*t1); ++t1)
+            ;
+          if (t1 != last && *t1 == '_')
+            first = t1 + 1;
+        }
+      }
+    } else if (std::isdigit(*first)) {
+      const char *t1 = first + 1;
+      for (; t1 != last && std::isdigit(*t1); ++t1)
+        ;
+      if (t1 == last)
+        first = last;
+    }
+  }
+  return first;
+}
+
+#ifndef NDEBUG
+namespace {
+struct DumpVisitor {
+  unsigned Depth = 0;
+  bool PendingNewline = false;
+
+  template<typename NodeT> static constexpr bool wantsNewline(const NodeT *) {
+    return true;
+  }
+  static bool wantsNewline(NodeArray A) { return !A.empty(); }
+  static constexpr bool wantsNewline(...) { return false; }
+
+  template<typename ...Ts> static bool anyWantNewline(Ts ...Vs) {
+    for (bool B : {wantsNewline(Vs)...})
+      if (B)
+        return true;
+    return false;
+  }
+
+  void printStr(const char *S) { fprintf(stderr, "%s", S); }
+  void print(StringView SV) {
+    fprintf(stderr, "\"%.*s\"", (int)SV.size(), SV.begin());
+  }
+  void print(const Node *N) {
+    if (N)
+      N->visit(std::ref(*this));
+    else
+      printStr("<null>");
+  }
+  void print(NodeArray A) {
+    ++Depth;
+    printStr("{");
+    bool First = true;
+    for (const Node *N : A) {
+      if (First)
+        print(N);
+      else
+        printWithComma(N);
+      First = false;
+    }
+    printStr("}");
+    --Depth;
+  }
+
+  // Overload used when T is exactly 'bool', not merely convertible to 'bool'.
+  void print(bool B) { printStr(B ? "true" : "false"); }
+
+  template <class T>
+  typename std::enable_if<std::is_unsigned<T>::value>::type print(T N) {
+    fprintf(stderr, "%llu", (unsigned long long)N);
+  }
+
+  template <class T>
+  typename std::enable_if<std::is_signed<T>::value>::type print(T N) {
+    fprintf(stderr, "%lld", (long long)N);
+  }
+
+  void print(ReferenceKind RK) {
+    switch (RK) {
+    case ReferenceKind::LValue:
+      return printStr("ReferenceKind::LValue");
+    case ReferenceKind::RValue:
+      return printStr("ReferenceKind::RValue");
+    }
+  }
+  void print(FunctionRefQual RQ) {
+    switch (RQ) {
+    case FunctionRefQual::FrefQualNone:
+      return printStr("FunctionRefQual::FrefQualNone");
+    case FunctionRefQual::FrefQualLValue:
+      return printStr("FunctionRefQual::FrefQualLValue");
+    case FunctionRefQual::FrefQualRValue:
+      return printStr("FunctionRefQual::FrefQualRValue");
+    }
+  }
+  void print(Qualifiers Qs) {
+    if (!Qs) return printStr("QualNone");
+    struct QualName { Qualifiers Q; const char *Name; } Names[] = {
+      {QualConst, "QualConst"},
+      {QualVolatile, "QualVolatile"},
+      {QualRestrict, "QualRestrict"},
+    };
+    for (QualName Name : Names) {
+      if (Qs & Name.Q) {
+        printStr(Name.Name);
+        Qs = Qualifiers(Qs & ~Name.Q);
+        if (Qs) printStr(" | ");
+      }
+    }
+  }
+  void print(SpecialSubKind SSK) {
+    switch (SSK) {
+    case SpecialSubKind::allocator:
+      return printStr("SpecialSubKind::allocator");
+    case SpecialSubKind::basic_string:
+      return printStr("SpecialSubKind::basic_string");
+    case SpecialSubKind::string:
+      return printStr("SpecialSubKind::string");
+    case SpecialSubKind::istream:
+      return printStr("SpecialSubKind::istream");
+    case SpecialSubKind::ostream:
+      return printStr("SpecialSubKind::ostream");
+    case SpecialSubKind::iostream:
+      return printStr("SpecialSubKind::iostream");
+    }
+  }
+  void print(TemplateParamKind TPK) {
+    switch (TPK) {
+    case TemplateParamKind::Type:
+      return printStr("TemplateParamKind::Type");
+    case TemplateParamKind::NonType:
+      return printStr("TemplateParamKind::NonType");
+    case TemplateParamKind::Template:
+      return printStr("TemplateParamKind::Template");
+    }
+  }
+  void print(Node::Prec P) {
+    switch (P) {
+    case Node::Prec::Primary:
+      return printStr("Node::Prec::Primary");
+    case Node::Prec::Postfix:
+      return printStr("Node::Prec::Postfix");
+    case Node::Prec::Unary:
+      return printStr("Node::Prec::Unary");
+    case Node::Prec::Cast:
+      return printStr("Node::Prec::Cast");
+    case Node::Prec::PtrMem:
+      return printStr("Node::Prec::PtrMem");
+    case Node::Prec::Multiplicative:
+      return printStr("Node::Prec::Multiplicative");
+    case Node::Prec::Additive:
+      return printStr("Node::Prec::Additive");
+    case Node::Prec::Shift:
+      return printStr("Node::Prec::Shift");
+    case Node::Prec::Spaceship:
+      return printStr("Node::Prec::Spaceship");
+    case Node::Prec::Relational:
+      return printStr("Node::Prec::Relational");
+    case Node::Prec::Equality:
+      return printStr("Node::Prec::Equality");
+    case Node::Prec::And:
+      return printStr("Node::Prec::And");
+    case Node::Prec::Xor:
+      return printStr("Node::Prec::Xor");
+    case Node::Prec::Ior:
+      return printStr("Node::Prec::Ior");
+    case Node::Prec::AndIf:
+      return printStr("Node::Prec::AndIf");
+    case Node::Prec::OrIf:
+      return printStr("Node::Prec::OrIf");
+    case Node::Prec::Conditional:
+      return printStr("Node::Prec::Conditional");
+    case Node::Prec::Assign:
+      return printStr("Node::Prec::Assign");
+    case Node::Prec::Comma:
+      return printStr("Node::Prec::Comma");
+    case Node::Prec::Default:
+      return printStr("Node::Prec::Default");
+    }
+  }
+
+  void newLine() {
+    printStr("\n");
+    for (unsigned I = 0; I != Depth; ++I)
+      printStr(" ");
+    PendingNewline = false;
+  }
+
+  template<typename T> void printWithPendingNewline(T V) {
+    print(V);
+    if (wantsNewline(V))
+      PendingNewline = true;
+  }
+
+  template<typename T> void printWithComma(T V) {
+    if (PendingNewline || wantsNewline(V)) {
+      printStr(",");
+      newLine();
+    } else {
+      printStr(", ");
+    }
+
+    printWithPendingNewline(V);
+  }
+
+  struct CtorArgPrinter {
+    DumpVisitor &Visitor;
+
+    template<typename T, typename ...Rest> void operator()(T V, Rest ...Vs) {
+      if (Visitor.anyWantNewline(V, Vs...))
+        Visitor.newLine();
+      Visitor.printWithPendingNewline(V);
+      int PrintInOrder[] = { (Visitor.printWithComma(Vs), 0)..., 0 };
+      (void)PrintInOrder;
+    }
+  };
+
+  template<typename NodeT> void operator()(const NodeT *Node) {
+    Depth += 2;
+    fprintf(stderr, "%s(", itanium_demangle::NodeKind<NodeT>::name());
+    Node->match(CtorArgPrinter{*this});
+    fprintf(stderr, ")");
+    Depth -= 2;
+  }
+
+  void operator()(const ForwardTemplateReference *Node) {
+    Depth += 2;
+    fprintf(stderr, "ForwardTemplateReference(");
+    if (Node->Ref && !Node->Printing) {
+      Node->Printing = true;
+      CtorArgPrinter{*this}(Node->Ref);
+      Node->Printing = false;
+    } else {
+      CtorArgPrinter{*this}(Node->Index);
+    }
+    fprintf(stderr, ")");
+    Depth -= 2;
+  }
+};
+}
+
+void itanium_demangle::Node::dump() const {
+  DumpVisitor V;
+  visit(std::ref(V));
+  V.newLine();
+}
+#endif
+
+namespace {
+class BumpPointerAllocator {
+  struct BlockMeta {
+    BlockMeta* Next;
+    size_t Current;
+  };
+
+  static constexpr size_t AllocSize = 4096;
+  static constexpr size_t UsableAllocSize = AllocSize - sizeof(BlockMeta);
+
+  alignas(long double) char InitialBuffer[AllocSize];
+  BlockMeta* BlockList = nullptr;
+
+  void grow() {
+    char* NewMeta = static_cast<char *>(std::malloc(AllocSize));
+    if (NewMeta == nullptr)
+      std::terminate();
+    BlockList = new (NewMeta) BlockMeta{BlockList, 0};
+  }
+
+  void* allocateMassive(size_t NBytes) {
+    NBytes += sizeof(BlockMeta);
+    BlockMeta* NewMeta = reinterpret_cast<BlockMeta*>(std::malloc(NBytes));
+    if (NewMeta == nullptr)
+      std::terminate();
+    BlockList->Next = new (NewMeta) BlockMeta{BlockList->Next, 0};
+    return static_cast<void*>(NewMeta + 1);
+  }
+
+public:
+  BumpPointerAllocator()
+      : BlockList(new (InitialBuffer) BlockMeta{nullptr, 0}) {}
+
+  void* allocate(size_t N) {
+    N = (N + 15u) & ~15u;
+    if (N + BlockList->Current >= UsableAllocSize) {
+      if (N > UsableAllocSize)
+        return allocateMassive(N);
+      grow();
+    }
+    BlockList->Current += N;
+    return static_cast<void*>(reinterpret_cast<char*>(BlockList + 1) +
+                              BlockList->Current - N);
+  }
+
+  void reset() {
+    while (BlockList) {
+      BlockMeta* Tmp = BlockList;
+      BlockList = BlockList->Next;
+      if (reinterpret_cast<char*>(Tmp) != InitialBuffer)
+        std::free(Tmp);
+    }
+    BlockList = new (InitialBuffer) BlockMeta{nullptr, 0};
+  }
+
+  ~BumpPointerAllocator() { reset(); }
+};
+
+class DefaultAllocator {
+  BumpPointerAllocator Alloc;
+
+public:
+  void reset() { Alloc.reset(); }
+
+  template<typename T, typename ...Args> T *makeNode(Args &&...args) {
+    return new (Alloc.allocate(sizeof(T)))
+        T(std::forward<Args>(args)...);
+  }
+
+  void *allocateNodeArray(size_t sz) {
+    return Alloc.allocate(sizeof(Node *) * sz);
+  }
+};
+}  // unnamed namespace
+
+//===----------------------------------------------------------------------===//
+// Code beyond this point should not be synchronized with LLVM.
+//===----------------------------------------------------------------------===//
+
+using Demangler = itanium_demangle::ManglingParser<DefaultAllocator>;
+
+namespace {
+enum : int {
+  demangle_invalid_args = -3,
+  demangle_invalid_mangled_name = -2,
+  demangle_memory_alloc_failure = -1,
+  demangle_success = 0,
+};
+}
+
+namespace __cxxabiv1 {
+extern "C" _LIBCXXABI_FUNC_VIS char *
+__cxa_demangle(const char *MangledName, char *Buf, size_t *N, int *Status) {
+  if (MangledName == nullptr || (Buf != nullptr && N == nullptr)) {
+    if (Status)
+      *Status = demangle_invalid_args;
+    return nullptr;
+  }
+
+  int InternalStatus = demangle_success;
+  Demangler Parser(MangledName, MangledName + std::strlen(MangledName));
+  Node *AST = Parser.parse();
+
+  if (AST == nullptr)
+    InternalStatus = demangle_invalid_mangled_name;
+  else {
+    OutputBuffer O(Buf, N);
+    assert(Parser.ForwardTemplateRefs.empty());
+    AST->print(O);
+    O += '\0';
+    if (N != nullptr)
+      *N = O.getCurrentPosition();
+    Buf = O.getBuffer();
+  }
+
+  if (Status)
+    *Status = InternalStatus;
+  return InternalStatus == demangle_success ? Buf : nullptr;
+}
+}  // __cxxabiv1
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_exception.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_exception.cpp
new file mode 100644
index 0000000..9cb2bf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_exception.cpp
@@ -0,0 +1,776 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the "Exception Handling APIs"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
+//
+//===----------------------------------------------------------------------===//
+
+#include "cxxabi.h"
+
+#include <exception>        // for std::terminate
+#include <string.h>         // for memset
+#include "cxa_exception.h"
+#include "cxa_handlers.h"
+#include "fallback_malloc.h"
+#include "include/atomic_support.h" // from libc++
+
+#if __has_feature(address_sanitizer)
+#include <sanitizer/asan_interface.h>
+#endif
+
+// +---------------------------+-----------------------------+---------------+
+// | __cxa_exception           | _Unwind_Exception CLNGC++\0 | thrown object |
+// +---------------------------+-----------------------------+---------------+
+//                                                           ^
+//                                                           |
+//   +-------------------------------------------------------+
+//   |
+// +---------------------------+-----------------------------+
+// | __cxa_dependent_exception | _Unwind_Exception CLNGC++\1 |
+// +---------------------------+-----------------------------+
+
+namespace __cxxabiv1 {
+
+//  Utility routines
+static
+inline
+__cxa_exception*
+cxa_exception_from_thrown_object(void* thrown_object)
+{
+    return static_cast<__cxa_exception*>(thrown_object) - 1;
+}
+
+// Note:  This is never called when exception_header is masquerading as a
+//        __cxa_dependent_exception.
+static
+inline
+void*
+thrown_object_from_cxa_exception(__cxa_exception* exception_header)
+{
+    return static_cast<void*>(exception_header + 1);
+}
+
+//  Get the exception object from the unwind pointer.
+//  Relies on the structure layout, where the unwind pointer is right in
+//  front of the user's exception object
+static
+inline
+__cxa_exception*
+cxa_exception_from_exception_unwind_exception(_Unwind_Exception* unwind_exception)
+{
+    return cxa_exception_from_thrown_object(unwind_exception + 1 );
+}
+
+// Round s up to next multiple of a.
+static inline
+size_t aligned_allocation_size(size_t s, size_t a) {
+    return (s + a - 1) & ~(a - 1);
+}
+
+static inline
+size_t cxa_exception_size_from_exception_thrown_size(size_t size) {
+    return aligned_allocation_size(size + sizeof (__cxa_exception),
+                                   alignof(__cxa_exception));
+}
+
+void __setExceptionClass(_Unwind_Exception* unwind_exception, uint64_t newValue) {
+    ::memcpy(&unwind_exception->exception_class, &newValue, sizeof(newValue));
+}
+
+
+static void setOurExceptionClass(_Unwind_Exception* unwind_exception) {
+    __setExceptionClass(unwind_exception, kOurExceptionClass);
+}
+
+static void setDependentExceptionClass(_Unwind_Exception* unwind_exception) {
+    __setExceptionClass(unwind_exception, kOurDependentExceptionClass);
+}
+
+//  Is it one of ours?
+uint64_t __getExceptionClass(const _Unwind_Exception* unwind_exception) {
+    // On x86 and some ARM unwinders, unwind_exception->exception_class is
+    // a uint64_t. On other ARM unwinders, it is a char[8].
+    // See: http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038b/IHI0038B_ehabi.pdf
+    // So we just copy it into a uint64_t to be sure.
+    uint64_t exClass;
+    ::memcpy(&exClass, &unwind_exception->exception_class, sizeof(exClass));
+    return exClass;
+}
+
+bool __isOurExceptionClass(const _Unwind_Exception* unwind_exception) {
+    return (__getExceptionClass(unwind_exception) & get_vendor_and_language) ==
+           (kOurExceptionClass                    & get_vendor_and_language);
+}
+
+static bool isDependentException(_Unwind_Exception* unwind_exception) {
+    return (__getExceptionClass(unwind_exception) & 0xFF) == 0x01;
+}
+
+//  This does not need to be atomic
+static inline int incrementHandlerCount(__cxa_exception *exception) {
+    return ++exception->handlerCount;
+}
+
+//  This does not need to be atomic
+static inline  int decrementHandlerCount(__cxa_exception *exception) {
+    return --exception->handlerCount;
+}
+
+/*
+    If reason isn't _URC_FOREIGN_EXCEPTION_CAUGHT, then the terminateHandler
+    stored in exc is called.  Otherwise the exceptionDestructor stored in
+    exc is called, and then the memory for the exception is deallocated.
+
+    This is never called for a __cxa_dependent_exception.
+*/
+static
+void
+exception_cleanup_func(_Unwind_Reason_Code reason, _Unwind_Exception* unwind_exception)
+{
+    __cxa_exception* exception_header = cxa_exception_from_exception_unwind_exception(unwind_exception);
+    if (_URC_FOREIGN_EXCEPTION_CAUGHT != reason)
+        std::__terminate(exception_header->terminateHandler);
+    // Just in case there exists a dependent exception that is pointing to this,
+    //    check the reference count and only destroy this if that count goes to zero.
+    __cxa_decrement_exception_refcount(unwind_exception + 1);
+}
+
+static _LIBCXXABI_NORETURN void failed_throw(__cxa_exception* exception_header) {
+//  Section 2.5.3 says:
+//      * For purposes of this ABI, several things are considered exception handlers:
+//      ** A terminate() call due to a throw.
+//  and
+//      * Upon entry, Following initialization of the catch parameter,
+//          a handler must call:
+//      * void *__cxa_begin_catch(void *exceptionObject );
+    (void) __cxa_begin_catch(&exception_header->unwindHeader);
+    std::__terminate(exception_header->terminateHandler);
+}
+
+// Return the offset of the __cxa_exception header from the start of the
+// allocated buffer. If __cxa_exception's alignment is smaller than the maximum
+// useful alignment for the target machine, padding has to be inserted before
+// the header to ensure the thrown object that follows the header is
+// sufficiently aligned. This happens if _Unwind_exception isn't double-word
+// aligned (on Darwin, for example).
+static size_t get_cxa_exception_offset() {
+  struct S {
+  } __attribute__((aligned));
+
+  // Compute the maximum alignment for the target machine.
+  constexpr size_t alignment = alignof(S);
+  constexpr size_t excp_size = sizeof(__cxa_exception);
+  constexpr size_t aligned_size =
+      (excp_size + alignment - 1) / alignment * alignment;
+  constexpr size_t offset = aligned_size - excp_size;
+  static_assert((offset == 0 || alignof(_Unwind_Exception) < alignment),
+                "offset is non-zero only if _Unwind_Exception isn't aligned");
+  return offset;
+}
+
+extern "C" {
+
+//  Allocate a __cxa_exception object, and zero-fill it.
+//  Reserve "thrown_size" bytes on the end for the user's exception
+//  object. Zero-fill the object. If memory can't be allocated, call
+//  std::terminate. Return a pointer to the memory to be used for the
+//  user's exception object.
+void *__cxa_allocate_exception(size_t thrown_size) throw() {
+    size_t actual_size = cxa_exception_size_from_exception_thrown_size(thrown_size);
+
+    // Allocate extra space before the __cxa_exception header to ensure the
+    // start of the thrown object is sufficiently aligned.
+    size_t header_offset = get_cxa_exception_offset();
+    char *raw_buffer =
+        (char *)__aligned_malloc_with_fallback(header_offset + actual_size);
+    if (NULL == raw_buffer)
+        std::terminate();
+    __cxa_exception *exception_header =
+        static_cast<__cxa_exception *>((void *)(raw_buffer + header_offset));
+    ::memset(exception_header, 0, actual_size);
+    return thrown_object_from_cxa_exception(exception_header);
+}
+
+
+//  Free a __cxa_exception object allocated with __cxa_allocate_exception.
+void __cxa_free_exception(void *thrown_object) throw() {
+    // Compute the size of the padding before the header.
+    size_t header_offset = get_cxa_exception_offset();
+    char *raw_buffer =
+        ((char *)cxa_exception_from_thrown_object(thrown_object)) - header_offset;
+    __aligned_free_with_fallback((void *)raw_buffer);
+}
+
+
+//  This function shall allocate a __cxa_dependent_exception and
+//  return a pointer to it. (Really to the object, not past its' end).
+//  Otherwise, it will work like __cxa_allocate_exception.
+void * __cxa_allocate_dependent_exception () {
+    size_t actual_size = sizeof(__cxa_dependent_exception);
+    void *ptr = __aligned_malloc_with_fallback(actual_size);
+    if (NULL == ptr)
+        std::terminate();
+    ::memset(ptr, 0, actual_size);
+    return ptr;
+}
+
+
+//  This function shall free a dependent_exception.
+//  It does not affect the reference count of the primary exception.
+void __cxa_free_dependent_exception (void * dependent_exception) {
+    __aligned_free_with_fallback(dependent_exception);
+}
+
+
+// 2.4.3 Throwing the Exception Object
+/*
+After constructing the exception object with the throw argument value,
+the generated code calls the __cxa_throw runtime library routine. This
+routine never returns.
+
+The __cxa_throw routine will do the following:
+
+* Obtain the __cxa_exception header from the thrown exception object address,
+which can be computed as follows:
+ __cxa_exception *header = ((__cxa_exception *) thrown_exception - 1);
+* Save the current unexpected_handler and terminate_handler in the __cxa_exception header.
+* Save the tinfo and dest arguments in the __cxa_exception header.
+* Set the exception_class field in the unwind header. This is a 64-bit value
+representing the ASCII string "XXXXC++\0", where "XXXX" is a
+vendor-dependent string. That is, for implementations conforming to this
+ABI, the low-order 4 bytes of this 64-bit value will be "C++\0".
+* Increment the uncaught_exception flag.
+* Call _Unwind_RaiseException in the system unwind library, Its argument is the
+pointer to the thrown exception, which __cxa_throw itself received as an argument.
+__Unwind_RaiseException begins the process of stack unwinding, described
+in Section 2.5. In special cases, such as an inability to find a
+handler, _Unwind_RaiseException may return. In that case, __cxa_throw
+will call terminate, assuming that there was no handler for the
+exception.
+*/
+void
+__cxa_throw(void *thrown_object, std::type_info *tinfo, void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
+    __cxa_eh_globals *globals = __cxa_get_globals();
+    __cxa_exception* exception_header = cxa_exception_from_thrown_object(thrown_object);
+
+    exception_header->unexpectedHandler = std::get_unexpected();
+    exception_header->terminateHandler  = std::get_terminate();
+    exception_header->exceptionType = tinfo;
+    exception_header->exceptionDestructor = dest;
+    setOurExceptionClass(&exception_header->unwindHeader);
+    exception_header->referenceCount = 1;  // This is a newly allocated exception, no need for thread safety.
+    globals->uncaughtExceptions += 1;   // Not atomically, since globals are thread-local
+
+    exception_header->unwindHeader.exception_cleanup = exception_cleanup_func;
+
+#if __has_feature(address_sanitizer)
+    // Inform the ASan runtime that now might be a good time to clean stuff up.
+    __asan_handle_no_return();
+#endif
+
+#ifdef __USING_SJLJ_EXCEPTIONS__
+    _Unwind_SjLj_RaiseException(&exception_header->unwindHeader);
+#else
+    _Unwind_RaiseException(&exception_header->unwindHeader);
+#endif
+    //  This only happens when there is no handler, or some unexpected unwinding
+    //     error happens.
+    failed_throw(exception_header);
+}
+
+
+// 2.5.3 Exception Handlers
+/*
+The adjusted pointer is computed by the personality routine during phase 1
+  and saved in the exception header (either __cxa_exception or
+  __cxa_dependent_exception).
+
+  Requires:  exception is native
+*/
+void *__cxa_get_exception_ptr(void *unwind_exception) throw() {
+#if defined(_LIBCXXABI_ARM_EHABI)
+    return reinterpret_cast<void*>(
+        static_cast<_Unwind_Control_Block*>(unwind_exception)->barrier_cache.bitpattern[0]);
+#else
+    return cxa_exception_from_exception_unwind_exception(
+        static_cast<_Unwind_Exception*>(unwind_exception))->adjustedPtr;
+#endif
+}
+
+#if defined(_LIBCXXABI_ARM_EHABI)
+/*
+The routine to be called before the cleanup.  This will save __cxa_exception in
+__cxa_eh_globals, so that __cxa_end_cleanup() can recover later.
+*/
+bool __cxa_begin_cleanup(void *unwind_arg) throw() {
+    _Unwind_Exception* unwind_exception = static_cast<_Unwind_Exception*>(unwind_arg);
+    __cxa_eh_globals* globals = __cxa_get_globals();
+    __cxa_exception* exception_header =
+        cxa_exception_from_exception_unwind_exception(unwind_exception);
+
+    if (__isOurExceptionClass(unwind_exception))
+    {
+        if (0 == exception_header->propagationCount)
+        {
+            exception_header->nextPropagatingException = globals->propagatingExceptions;
+            globals->propagatingExceptions = exception_header;
+        }
+        ++exception_header->propagationCount;
+    }
+    else
+    {
+        // If the propagatingExceptions stack is not empty, since we can't
+        // chain the foreign exception, terminate it.
+        if (NULL != globals->propagatingExceptions)
+            std::terminate();
+        globals->propagatingExceptions = exception_header;
+    }
+    return true;
+}
+
+/*
+The routine to be called after the cleanup has been performed.  It will get the
+propagating __cxa_exception from __cxa_eh_globals, and continue the stack
+unwinding with _Unwind_Resume.
+
+According to ARM EHABI 8.4.1, __cxa_end_cleanup() should not clobber any
+register, thus we have to write this function in assembly so that we can save
+{r1, r2, r3}.  We don't have to save r0 because it is the return value and the
+first argument to _Unwind_Resume().  The function also saves/restores r4 to
+keep the stack aligned and to provide a temp register.  _Unwind_Resume never
+returns and we need to keep the original lr so just branch to it.  When
+targeting bare metal, the function also clobbers ip/r12 to hold the address of
+_Unwind_Resume, which may be too far away for an ordinary branch.
+*/
+__attribute__((used)) static _Unwind_Exception *
+__cxa_end_cleanup_impl()
+{
+    __cxa_eh_globals* globals = __cxa_get_globals();
+    __cxa_exception* exception_header = globals->propagatingExceptions;
+    if (NULL == exception_header)
+    {
+        // It seems that __cxa_begin_cleanup() is not called properly.
+        // We have no choice but terminate the program now.
+        std::terminate();
+    }
+
+    if (__isOurExceptionClass(&exception_header->unwindHeader))
+    {
+        --exception_header->propagationCount;
+        if (0 == exception_header->propagationCount)
+        {
+            globals->propagatingExceptions = exception_header->nextPropagatingException;
+            exception_header->nextPropagatingException = NULL;
+        }
+    }
+    else
+    {
+        globals->propagatingExceptions = NULL;
+    }
+    return &exception_header->unwindHeader;
+}
+
+asm("	.pushsection	.text.__cxa_end_cleanup,\"ax\",%progbits\n"
+    "	.globl	__cxa_end_cleanup\n"
+    "	.type	__cxa_end_cleanup,%function\n"
+    "__cxa_end_cleanup:\n"
+#if defined(__ARM_FEATURE_BTI_DEFAULT)
+    "	bti\n"
+#endif
+    "	push	{r1, r2, r3, r4}\n"
+    "	mov	r4, lr\n"
+    "	bl	__cxa_end_cleanup_impl\n"
+    "	mov	lr, r4\n"
+#if defined(LIBCXXABI_BAREMETAL)
+    "	ldr	r4,	=_Unwind_Resume\n"
+    "	mov	ip,	r4\n"
+#endif
+    "	pop	{r1, r2, r3, r4}\n"
+#if defined(LIBCXXABI_BAREMETAL)
+    "	bx	ip\n"
+#else
+    "	b	_Unwind_Resume\n"
+#endif
+    "	.popsection");
+#endif // defined(_LIBCXXABI_ARM_EHABI)
+
+/*
+This routine can catch foreign or native exceptions.  If native, the exception
+can be a primary or dependent variety.  This routine may remain blissfully
+ignorant of whether the native exception is primary or dependent.
+
+If the exception is native:
+* Increment's the exception's handler count.
+* Push the exception on the stack of currently-caught exceptions if it is not
+  already there (from a rethrow).
+* Decrements the uncaught_exception count.
+* Returns the adjusted pointer to the exception object, which is stored in
+  the __cxa_exception by the personality routine.
+
+If the exception is foreign, this means it did not originate from one of throw
+routines.  The foreign exception does not necessarily have a __cxa_exception
+header.  However we can catch it here with a catch (...), or with a call
+to terminate or unexpected during unwinding.
+* Do not try to increment the exception's handler count, we don't know where
+  it is.
+* Push the exception on the stack of currently-caught exceptions only if the
+  stack is empty.  The foreign exception has no way to link to the current
+  top of stack.  If the stack is not empty, call terminate.  Even with an
+  empty stack, this is hacked in by pushing a pointer to an imaginary
+  __cxa_exception block in front of the foreign exception.  It would be better
+  if the __cxa_eh_globals structure had a stack of _Unwind_Exception, but it
+  doesn't.  It has a stack of __cxa_exception (which has a next* in it).
+* Do not decrement the uncaught_exception count because we didn't increment it
+  in __cxa_throw (or one of our rethrow functions).
+* If we haven't terminated, assume the exception object is just past the
+  _Unwind_Exception and return a pointer to that.
+*/
+void*
+__cxa_begin_catch(void* unwind_arg) throw()
+{
+    _Unwind_Exception* unwind_exception = static_cast<_Unwind_Exception*>(unwind_arg);
+    bool native_exception = __isOurExceptionClass(unwind_exception);
+    __cxa_eh_globals* globals = __cxa_get_globals();
+    // exception_header is a hackish offset from a foreign exception, but it
+    //   works as long as we're careful not to try to access any __cxa_exception
+    //   parts.
+    __cxa_exception* exception_header =
+            cxa_exception_from_exception_unwind_exception
+            (
+                static_cast<_Unwind_Exception*>(unwind_exception)
+            );
+
+#if defined(__MVS__)
+    // Remove the exception object from the linked list of exceptions that the z/OS unwinder
+    // maintains before adding it to the libc++abi list of caught exceptions.
+    // The libc++abi will manage the lifetime of the exception from this point forward.
+    _UnwindZOS_PopException();
+#endif
+
+    if (native_exception)
+    {
+        // Increment the handler count, removing the flag about being rethrown
+        exception_header->handlerCount = exception_header->handlerCount < 0 ?
+            -exception_header->handlerCount + 1 : exception_header->handlerCount + 1;
+        //  place the exception on the top of the stack if it's not already
+        //    there by a previous rethrow
+        if (exception_header != globals->caughtExceptions)
+        {
+            exception_header->nextException = globals->caughtExceptions;
+            globals->caughtExceptions = exception_header;
+        }
+        globals->uncaughtExceptions -= 1;   // Not atomically, since globals are thread-local
+#if defined(_LIBCXXABI_ARM_EHABI)
+        return reinterpret_cast<void*>(exception_header->unwindHeader.barrier_cache.bitpattern[0]);
+#else
+        return exception_header->adjustedPtr;
+#endif
+    }
+    // Else this is a foreign exception
+    // If the caughtExceptions stack is not empty, terminate
+    if (globals->caughtExceptions != 0)
+        std::terminate();
+    // Push the foreign exception on to the stack
+    globals->caughtExceptions = exception_header;
+    return unwind_exception + 1;
+}
+
+
+/*
+Upon exit for any reason, a handler must call:
+    void __cxa_end_catch ();
+
+This routine can be called for either a native or foreign exception.
+For a native exception:
+* Locates the most recently caught exception and decrements its handler count.
+* Removes the exception from the caught exception stack, if the handler count goes to zero.
+* If the handler count goes down to zero, and the exception was not re-thrown
+  by throw, it locates the primary exception (which may be the same as the one
+  it's handling) and decrements its reference count. If that reference count
+  goes to zero, the function destroys the exception. In any case, if the current
+  exception is a dependent exception, it destroys that.
+
+For a foreign exception:
+* If it has been rethrown, there is nothing to do.
+* Otherwise delete the exception and pop the catch stack to empty.
+*/
+void __cxa_end_catch() {
+  static_assert(sizeof(__cxa_exception) == sizeof(__cxa_dependent_exception),
+                "sizeof(__cxa_exception) must be equal to "
+                "sizeof(__cxa_dependent_exception)");
+  static_assert(__builtin_offsetof(__cxa_exception, referenceCount) ==
+                    __builtin_offsetof(__cxa_dependent_exception,
+                                       primaryException),
+                "the layout of __cxa_exception must match the layout of "
+                "__cxa_dependent_exception");
+  static_assert(__builtin_offsetof(__cxa_exception, handlerCount) ==
+                    __builtin_offsetof(__cxa_dependent_exception, handlerCount),
+                "the layout of __cxa_exception must match the layout of "
+                "__cxa_dependent_exception");
+    __cxa_eh_globals* globals = __cxa_get_globals_fast(); // __cxa_get_globals called in __cxa_begin_catch
+    __cxa_exception* exception_header = globals->caughtExceptions;
+    // If we've rethrown a foreign exception, then globals->caughtExceptions
+    //    will have been made an empty stack by __cxa_rethrow() and there is
+    //    nothing more to be done.  Do nothing!
+    if (NULL != exception_header)
+    {
+        bool native_exception = __isOurExceptionClass(&exception_header->unwindHeader);
+        if (native_exception)
+        {
+            // This is a native exception
+            if (exception_header->handlerCount < 0)
+            {
+                //  The exception has been rethrown by __cxa_rethrow, so don't delete it
+                if (0 == incrementHandlerCount(exception_header))
+                {
+                    //  Remove from the chain of uncaught exceptions
+                    globals->caughtExceptions = exception_header->nextException;
+                    // but don't destroy
+                }
+                // Keep handlerCount negative in case there are nested catch's
+                //   that need to be told that this exception is rethrown.  Don't
+                //   erase this rethrow flag until the exception is recaught.
+            }
+            else
+            {
+                // The native exception has not been rethrown
+                if (0 == decrementHandlerCount(exception_header))
+                {
+                    //  Remove from the chain of uncaught exceptions
+                    globals->caughtExceptions = exception_header->nextException;
+                    // Destroy this exception, being careful to distinguish
+                    //    between dependent and primary exceptions
+                    if (isDependentException(&exception_header->unwindHeader))
+                    {
+                        // Reset exception_header to primaryException and deallocate the dependent exception
+                        __cxa_dependent_exception* dep_exception_header =
+                            reinterpret_cast<__cxa_dependent_exception*>(exception_header);
+                        exception_header =
+                            cxa_exception_from_thrown_object(dep_exception_header->primaryException);
+                        __cxa_free_dependent_exception(dep_exception_header);
+                    }
+                    // Destroy the primary exception only if its referenceCount goes to 0
+                    //    (this decrement must be atomic)
+                    __cxa_decrement_exception_refcount(thrown_object_from_cxa_exception(exception_header));
+                }
+            }
+        }
+        else
+        {
+            // The foreign exception has not been rethrown.  Pop the stack
+            //    and delete it.  If there are nested catch's and they try
+            //    to touch a foreign exception in any way, that is undefined
+            //     behavior.  They likely can't since the only way to catch
+            //     a foreign exception is with catch (...)!
+            _Unwind_DeleteException(&globals->caughtExceptions->unwindHeader);
+            globals->caughtExceptions = 0;
+        }
+    }
+}
+
+// Note:  exception_header may be masquerading as a __cxa_dependent_exception
+//        and that's ok.  exceptionType is there too.
+//        However watch out for foreign exceptions.  Return null for them.
+std::type_info *__cxa_current_exception_type() {
+//  get the current exception
+    __cxa_eh_globals *globals = __cxa_get_globals_fast();
+    if (NULL == globals)
+        return NULL;     //  If there have never been any exceptions, there are none now.
+    __cxa_exception *exception_header = globals->caughtExceptions;
+    if (NULL == exception_header)
+        return NULL;        //  No current exception
+    if (!__isOurExceptionClass(&exception_header->unwindHeader))
+        return NULL;
+    return exception_header->exceptionType;
+}
+
+// 2.5.4 Rethrowing Exceptions
+/*  This routine can rethrow native or foreign exceptions.
+If the exception is native:
+* marks the exception object on top of the caughtExceptions stack
+  (in an implementation-defined way) as being rethrown.
+* If the caughtExceptions stack is empty, it calls terminate()
+  (see [C++FDIS] [except.throw], 15.1.8).
+* It then calls _Unwind_RaiseException which should not return
+   (terminate if it does).
+  Note:  exception_header may be masquerading as a __cxa_dependent_exception
+         and that's ok.
+*/
+void __cxa_rethrow() {
+    __cxa_eh_globals* globals = __cxa_get_globals();
+    __cxa_exception* exception_header = globals->caughtExceptions;
+    if (NULL == exception_header)
+        std::terminate();      // throw; called outside of a exception handler
+    bool native_exception = __isOurExceptionClass(&exception_header->unwindHeader);
+    if (native_exception)
+    {
+        //  Mark the exception as being rethrown (reverse the effects of __cxa_begin_catch)
+        exception_header->handlerCount = -exception_header->handlerCount;
+        globals->uncaughtExceptions += 1;
+        //  __cxa_end_catch will remove this exception from the caughtExceptions stack if necessary
+    }
+    else  // this is a foreign exception
+    {
+        // The only way to communicate to __cxa_end_catch that we've rethrown
+        //   a foreign exception, so don't delete us, is to pop the stack here
+        //   which must be empty afterwards.  Then __cxa_end_catch will do
+        //   nothing
+        globals->caughtExceptions = 0;
+    }
+#ifdef __USING_SJLJ_EXCEPTIONS__
+    _Unwind_SjLj_RaiseException(&exception_header->unwindHeader);
+#else
+    _Unwind_RaiseException(&exception_header->unwindHeader);
+#endif
+
+    //  If we get here, some kind of unwinding error has occurred.
+    //  There is some weird code generation bug happening with
+    //     Apple clang version 4.0 (tags/Apple/clang-418.0.2) (based on LLVM 3.1svn)
+    //     If we call failed_throw here.  Turns up with -O2 or higher, and -Os.
+    __cxa_begin_catch(&exception_header->unwindHeader);
+    if (native_exception)
+        std::__terminate(exception_header->terminateHandler);
+    // Foreign exception: can't get exception_header->terminateHandler
+    std::terminate();
+}
+
+/*
+    If thrown_object is not null, atomically increment the referenceCount field
+    of the __cxa_exception header associated with the thrown object referred to
+    by thrown_object.
+
+    Requires:  If thrown_object is not NULL, it is a native exception.
+*/
+void
+__cxa_increment_exception_refcount(void *thrown_object) throw() {
+    if (thrown_object != NULL )
+    {
+        __cxa_exception* exception_header = cxa_exception_from_thrown_object(thrown_object);
+        std::__libcpp_atomic_add(&exception_header->referenceCount, size_t(1));
+    }
+}
+
+/*
+    If thrown_object is not null, atomically decrement the referenceCount field
+    of the __cxa_exception header associated with the thrown object referred to
+    by thrown_object.  If the referenceCount drops to zero, destroy and
+    deallocate the exception.
+
+    Requires:  If thrown_object is not NULL, it is a native exception.
+*/
+_LIBCXXABI_NO_CFI
+void __cxa_decrement_exception_refcount(void *thrown_object) throw() {
+    if (thrown_object != NULL )
+    {
+        __cxa_exception* exception_header = cxa_exception_from_thrown_object(thrown_object);
+        if (std::__libcpp_atomic_add(&exception_header->referenceCount, size_t(-1)) == 0)
+        {
+            if (NULL != exception_header->exceptionDestructor)
+                exception_header->exceptionDestructor(thrown_object);
+            __cxa_free_exception(thrown_object);
+        }
+    }
+}
+
+/*
+    Returns a pointer to the thrown object (if any) at the top of the
+    caughtExceptions stack.  Atomically increment the exception's referenceCount.
+    If there is no such thrown object or if the thrown object is foreign,
+    returns null.
+
+    We can use __cxa_get_globals_fast here to get the globals because if there have
+    been no exceptions thrown, ever, on this thread, we can return NULL without
+    the need to allocate the exception-handling globals.
+*/
+void *__cxa_current_primary_exception() throw() {
+//  get the current exception
+    __cxa_eh_globals* globals = __cxa_get_globals_fast();
+    if (NULL == globals)
+        return NULL;        //  If there are no globals, there is no exception
+    __cxa_exception* exception_header = globals->caughtExceptions;
+    if (NULL == exception_header)
+        return NULL;        //  No current exception
+    if (!__isOurExceptionClass(&exception_header->unwindHeader))
+        return NULL;        // Can't capture a foreign exception (no way to refcount it)
+    if (isDependentException(&exception_header->unwindHeader)) {
+        __cxa_dependent_exception* dep_exception_header =
+            reinterpret_cast<__cxa_dependent_exception*>(exception_header);
+        exception_header = cxa_exception_from_thrown_object(dep_exception_header->primaryException);
+    }
+    void* thrown_object = thrown_object_from_cxa_exception(exception_header);
+    __cxa_increment_exception_refcount(thrown_object);
+    return thrown_object;
+}
+
+/*
+    If reason isn't _URC_FOREIGN_EXCEPTION_CAUGHT, then the terminateHandler
+    stored in exc is called.  Otherwise the referenceCount stored in the
+    primary exception is decremented, destroying the primary if necessary.
+    Finally the dependent exception is destroyed.
+*/
+static
+void
+dependent_exception_cleanup(_Unwind_Reason_Code reason, _Unwind_Exception* unwind_exception)
+{
+    __cxa_dependent_exception* dep_exception_header =
+                      reinterpret_cast<__cxa_dependent_exception*>(unwind_exception + 1) - 1;
+    if (_URC_FOREIGN_EXCEPTION_CAUGHT != reason)
+        std::__terminate(dep_exception_header->terminateHandler);
+    __cxa_decrement_exception_refcount(dep_exception_header->primaryException);
+    __cxa_free_dependent_exception(dep_exception_header);
+}
+
+/*
+    If thrown_object is not null, allocate, initialize and throw a dependent
+    exception.
+*/
+void
+__cxa_rethrow_primary_exception(void* thrown_object)
+{
+    if ( thrown_object != NULL )
+    {
+        // thrown_object guaranteed to be native because
+        //   __cxa_current_primary_exception returns NULL for foreign exceptions
+        __cxa_exception* exception_header = cxa_exception_from_thrown_object(thrown_object);
+        __cxa_dependent_exception* dep_exception_header =
+            static_cast<__cxa_dependent_exception*>(__cxa_allocate_dependent_exception());
+        dep_exception_header->primaryException = thrown_object;
+        __cxa_increment_exception_refcount(thrown_object);
+        dep_exception_header->exceptionType = exception_header->exceptionType;
+        dep_exception_header->unexpectedHandler = std::get_unexpected();
+        dep_exception_header->terminateHandler = std::get_terminate();
+        setDependentExceptionClass(&dep_exception_header->unwindHeader);
+        __cxa_get_globals()->uncaughtExceptions += 1;
+        dep_exception_header->unwindHeader.exception_cleanup = dependent_exception_cleanup;
+#ifdef __USING_SJLJ_EXCEPTIONS__
+        _Unwind_SjLj_RaiseException(&dep_exception_header->unwindHeader);
+#else
+        _Unwind_RaiseException(&dep_exception_header->unwindHeader);
+#endif
+        // Some sort of unwinding error.  Note that terminate is a handler.
+        __cxa_begin_catch(&dep_exception_header->unwindHeader);
+    }
+    // If we return client will call terminate()
+}
+
+bool
+__cxa_uncaught_exception() throw() { return __cxa_uncaught_exceptions() != 0; }
+
+unsigned int
+__cxa_uncaught_exceptions() throw()
+{
+    // This does not report foreign exceptions in flight
+    __cxa_eh_globals* globals = __cxa_get_globals_fast();
+    if (globals == 0)
+        return 0;
+    return globals->uncaughtExceptions;
+}
+
+}  // extern "C"
+
+}  // abi
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_exception.h b/app/src/main/cpp/libcxx/src/abi/cxa_exception.h
new file mode 100644
index 0000000..49dde28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_exception.h
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the "Exception Handling APIs"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _CXA_EXCEPTION_H
+#define _CXA_EXCEPTION_H
+
+#include <exception> // for std::unexpected_handler and std::terminate_handler
+#include "cxxabi.h"
+#include "unwind.h"
+
+namespace __cxxabiv1 {
+
+static const uint64_t kOurExceptionClass          = 0x434C4E47432B2B00; // CLNGC++\0
+static const uint64_t kOurDependentExceptionClass = 0x434C4E47432B2B01; // CLNGC++\1
+static const uint64_t get_vendor_and_language     = 0xFFFFFFFFFFFFFF00; // mask for CLNGC++
+
+_LIBCXXABI_HIDDEN uint64_t __getExceptionClass  (const _Unwind_Exception*);
+_LIBCXXABI_HIDDEN void     __setExceptionClass  (      _Unwind_Exception*, uint64_t);
+_LIBCXXABI_HIDDEN bool     __isOurExceptionClass(const _Unwind_Exception*);
+
+struct _LIBCXXABI_HIDDEN __cxa_exception {
+#if defined(__LP64__) || defined(_WIN64) || defined(_LIBCXXABI_ARM_EHABI)
+    // Now _Unwind_Exception is marked with __attribute__((aligned)),
+    // which implies __cxa_exception is also aligned. Insert padding
+    // in the beginning of the struct, rather than before unwindHeader.
+    void *reserve;
+
+    // This is a new field to support C++11 exception_ptr.
+    // For binary compatibility it is at the start of this
+    // struct which is prepended to the object thrown in
+    // __cxa_allocate_exception.
+    size_t referenceCount;
+#endif
+
+    //  Manage the exception object itself.
+    std::type_info *exceptionType;
+    void (_LIBCXXABI_DTOR_FUNC *exceptionDestructor)(void *);
+    std::unexpected_handler unexpectedHandler;
+    std::terminate_handler  terminateHandler;
+
+    __cxa_exception *nextException;
+
+    int handlerCount;
+
+#if defined(_LIBCXXABI_ARM_EHABI)
+    __cxa_exception* nextPropagatingException;
+    int propagationCount;
+#else
+    int handlerSwitchValue;
+    const unsigned char *actionRecord;
+    const unsigned char *languageSpecificData;
+    void *catchTemp;
+    void *adjustedPtr;
+#endif
+
+#if !defined(__LP64__) && !defined(_WIN64) && !defined(_LIBCXXABI_ARM_EHABI)
+    // This is a new field to support C++11 exception_ptr.
+    // For binary compatibility it is placed where the compiler
+    // previously added padding to 64-bit align unwindHeader.
+    size_t referenceCount;
+#endif
+    _Unwind_Exception unwindHeader;
+};
+
+// http://sourcery.mentor.com/archives/cxx-abi-dev/msg01924.html
+// The layout of this structure MUST match the layout of __cxa_exception, with
+// primaryException instead of referenceCount.
+struct _LIBCXXABI_HIDDEN __cxa_dependent_exception {
+#if defined(__LP64__) || defined(_WIN64) || defined(_LIBCXXABI_ARM_EHABI)
+    void* reserve; // padding.
+    void* primaryException;
+#endif
+
+    std::type_info *exceptionType;
+    void (_LIBCXXABI_DTOR_FUNC *exceptionDestructor)(void *);
+    std::unexpected_handler unexpectedHandler;
+    std::terminate_handler terminateHandler;
+
+    __cxa_exception *nextException;
+
+    int handlerCount;
+
+#if defined(_LIBCXXABI_ARM_EHABI)
+    __cxa_exception* nextPropagatingException;
+    int propagationCount;
+#else
+    int handlerSwitchValue;
+    const unsigned char *actionRecord;
+    const unsigned char *languageSpecificData;
+    void * catchTemp;
+    void *adjustedPtr;
+#endif
+
+#if !defined(__LP64__) && !defined(_WIN64) && !defined(_LIBCXXABI_ARM_EHABI)
+    void* primaryException;
+#endif
+    _Unwind_Exception unwindHeader;
+};
+
+// Verify the negative offsets of different fields.
+static_assert(sizeof(_Unwind_Exception) +
+                      offsetof(__cxa_exception, unwindHeader) ==
+                  sizeof(__cxa_exception),
+              "unwindHeader has wrong negative offsets");
+static_assert(sizeof(_Unwind_Exception) +
+                      offsetof(__cxa_dependent_exception, unwindHeader) ==
+                  sizeof(__cxa_dependent_exception),
+              "unwindHeader has wrong negative offsets");
+
+#if defined(_LIBCXXABI_ARM_EHABI)
+static_assert(offsetof(__cxa_exception, propagationCount) +
+                      sizeof(_Unwind_Exception) + sizeof(void*) ==
+                  sizeof(__cxa_exception),
+              "propagationCount has wrong negative offset");
+static_assert(offsetof(__cxa_dependent_exception, propagationCount) +
+                      sizeof(_Unwind_Exception) + sizeof(void*) ==
+                  sizeof(__cxa_dependent_exception),
+              "propagationCount has wrong negative offset");
+#elif defined(__LP64__) || defined(_WIN64)
+static_assert(offsetof(__cxa_exception, adjustedPtr) +
+                      sizeof(_Unwind_Exception) + sizeof(void*) ==
+                  sizeof(__cxa_exception),
+              "adjustedPtr has wrong negative offset");
+static_assert(offsetof(__cxa_dependent_exception, adjustedPtr) +
+                      sizeof(_Unwind_Exception) + sizeof(void*) ==
+                  sizeof(__cxa_dependent_exception),
+              "adjustedPtr has wrong negative offset");
+#else
+static_assert(offsetof(__cxa_exception, referenceCount) +
+                      sizeof(_Unwind_Exception) + sizeof(void*) ==
+                  sizeof(__cxa_exception),
+              "referenceCount has wrong negative offset");
+static_assert(offsetof(__cxa_dependent_exception, primaryException) +
+                      sizeof(_Unwind_Exception) + sizeof(void*) ==
+                  sizeof(__cxa_dependent_exception),
+              "primaryException has wrong negative offset");
+#endif
+
+struct _LIBCXXABI_HIDDEN __cxa_eh_globals {
+    __cxa_exception *   caughtExceptions;
+    unsigned int        uncaughtExceptions;
+#if defined(_LIBCXXABI_ARM_EHABI)
+    __cxa_exception* propagatingExceptions;
+#endif
+};
+
+extern "C" _LIBCXXABI_FUNC_VIS __cxa_eh_globals * __cxa_get_globals      ();
+extern "C" _LIBCXXABI_FUNC_VIS __cxa_eh_globals * __cxa_get_globals_fast ();
+
+extern "C" _LIBCXXABI_FUNC_VIS void * __cxa_allocate_dependent_exception ();
+extern "C" _LIBCXXABI_FUNC_VIS void __cxa_free_dependent_exception (void * dependent_exception);
+
+}  // namespace __cxxabiv1
+
+#endif // _CXA_EXCEPTION_H
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_exception_storage.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_exception_storage.cpp
new file mode 100644
index 0000000..3a3233a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_exception_storage.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the storage for the "Caught Exception Stack"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html#cxx-exc-stack
+//
+//===----------------------------------------------------------------------===//
+
+#include "cxa_exception.h"
+
+#include <__threading_support>
+
+#if defined(_LIBCXXABI_HAS_NO_THREADS)
+
+namespace __cxxabiv1 {
+extern "C" {
+    static __cxa_eh_globals eh_globals;
+    __cxa_eh_globals *__cxa_get_globals() { return &eh_globals; }
+    __cxa_eh_globals *__cxa_get_globals_fast() { return &eh_globals; }
+} // extern "C"
+} // namespace __cxxabiv1
+
+#elif defined(HAS_THREAD_LOCAL)
+
+namespace __cxxabiv1 {
+namespace {
+    __cxa_eh_globals *__globals() {
+        static thread_local __cxa_eh_globals eh_globals;
+        return &eh_globals;
+    }
+} // namespace
+
+extern "C" {
+    __cxa_eh_globals *__cxa_get_globals() { return __globals(); }
+    __cxa_eh_globals *__cxa_get_globals_fast() { return __globals(); }
+} // extern "C"
+} // namespace __cxxabiv1
+
+#else
+
+#include "abort_message.h"
+#include "fallback_malloc.h"
+
+#if defined(__ELF__) && defined(_LIBCXXABI_LINK_PTHREAD_LIB)
+#pragma comment(lib, "pthread")
+#endif
+
+//  In general, we treat all threading errors as fatal.
+//  We cannot call std::terminate() because that will in turn
+//  call __cxa_get_globals() and cause infinite recursion.
+
+namespace __cxxabiv1 {
+namespace {
+    std::__libcpp_tls_key key_;
+    std::__libcpp_exec_once_flag flag_ = _LIBCPP_EXEC_ONCE_INITIALIZER;
+
+    void _LIBCPP_TLS_DESTRUCTOR_CC destruct_(void *p) {
+        __free_with_fallback(p);
+        if (0 != std::__libcpp_tls_set(key_, NULL))
+            abort_message("cannot zero out thread value for __cxa_get_globals()");
+    }
+
+    void construct_() {
+        if (0 != std::__libcpp_tls_create(&key_, destruct_))
+            abort_message("cannot create thread specific key for __cxa_get_globals()");
+    }
+} // namespace
+
+extern "C" {
+    __cxa_eh_globals *__cxa_get_globals() {
+        // Try to get the globals for this thread
+        __cxa_eh_globals *retVal = __cxa_get_globals_fast();
+
+        // If this is the first time we've been asked for these globals, create them
+        if (NULL == retVal) {
+            retVal = static_cast<__cxa_eh_globals*>(
+                __calloc_with_fallback(1, sizeof(__cxa_eh_globals)));
+            if (NULL == retVal)
+                abort_message("cannot allocate __cxa_eh_globals");
+            if (0 != std::__libcpp_tls_set(key_, retVal))
+               abort_message("std::__libcpp_tls_set failure in __cxa_get_globals()");
+        }
+        return retVal;
+    }
+
+    // Note that this implementation will reliably return NULL if not
+    // preceded by a call to __cxa_get_globals().  This is an extension
+    // to the Itanium ABI and is taken advantage of in several places in
+    // libc++abi.
+    __cxa_eh_globals *__cxa_get_globals_fast() {
+        // First time through, create the key.
+        if (0 != std::__libcpp_execute_once(&flag_, construct_))
+            abort_message("execute once failure in __cxa_get_globals_fast()");
+        return static_cast<__cxa_eh_globals*>(std::__libcpp_tls_get(key_));
+    }
+} // extern "C"
+} // namespace __cxxabiv1
+
+#endif
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_guard.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_guard.cpp
new file mode 100644
index 0000000..fc1fa90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_guard.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "__cxxabi_config.h"
+#include "cxxabi.h"
+
+// Tell the implementation that we're building the actual implementation
+// (and not testing it)
+#define BUILDING_CXA_GUARD
+#include "cxa_guard_impl.h"
+
+/*
+    This implementation must be careful to not call code external to this file
+    which will turn around and try to call __cxa_guard_acquire reentrantly.
+    For this reason, the headers of this file are as restricted as possible.
+    Previous implementations of this code for __APPLE__ have used
+    std::__libcpp_mutex_lock and the abort_message utility without problem. This
+    implementation also uses std::__libcpp_condvar_wait which has tested
+    to not be a problem.
+*/
+
+namespace __cxxabiv1 {
+
+#if defined(_LIBCXXABI_GUARD_ABI_ARM)
+using guard_type = uint32_t;
+#else
+using guard_type = uint64_t;
+#endif
+
+extern "C"
+{
+_LIBCXXABI_FUNC_VIS int __cxa_guard_acquire(guard_type* raw_guard_object) {
+  SelectedImplementation imp(raw_guard_object);
+  return static_cast<int>(imp.cxa_guard_acquire());
+}
+
+_LIBCXXABI_FUNC_VIS void __cxa_guard_release(guard_type *raw_guard_object) {
+  SelectedImplementation imp(raw_guard_object);
+  imp.cxa_guard_release();
+}
+
+_LIBCXXABI_FUNC_VIS void __cxa_guard_abort(guard_type *raw_guard_object) {
+  SelectedImplementation imp(raw_guard_object);
+  imp.cxa_guard_abort();
+}
+}  // extern "C"
+
+}  // __cxxabiv1
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_guard_impl.h b/app/src/main/cpp/libcxx/src/abi/cxa_guard_impl.h
new file mode 100644
index 0000000..47fe2b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_guard_impl.h
@@ -0,0 +1,674 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXXABI_SRC_INCLUDE_CXA_GUARD_IMPL_H
+#define LIBCXXABI_SRC_INCLUDE_CXA_GUARD_IMPL_H
+
+/* cxa_guard_impl.h - Implements the C++ runtime support for function local
+ * static guards.
+ * The layout of the guard object is the same across ARM and Itanium.
+ *
+ * The first "guard byte" (which is checked by the compiler) is set only upon
+ * the completion of cxa release.
+ *
+ * The second "init byte" does the rest of the bookkeeping. It tracks if
+ * initialization is complete or pending, and if there are waiting threads.
+ *
+ * If the guard variable is 64-bits and the platforms supplies a 32-bit thread
+ * identifier, it is used to detect recursive initialization. The thread ID of
+ * the thread currently performing initialization is stored in the second word.
+ *
+ *  Guard Object Layout:
+ * ---------------------------------------------------------------------------
+ * | a+0: guard byte | a+1: init byte | a+2: unused ... | a+4: thread-id ... |
+ * ---------------------------------------------------------------------------
+ *
+ * Note that we don't do what the ABI docs suggest (put a mutex in the guard
+ * object which we acquire in cxa_guard_acquire and release in
+ * cxa_guard_release). Instead we use the init byte to imitate that behaviour,
+ * but without actually holding anything mutex related between aquire and
+ * release/abort.
+ *
+ *  Access Protocol:
+ *    For each implementation the guard byte is checked and set before accessing
+ *    the init byte.
+ *
+ *  Overall Design:
+ *    The implementation was designed to allow each implementation to be tested
+ *    independent of the C++ runtime or platform support.
+ *
+ */
+
+#include "__cxxabi_config.h"
+#include "include/atomic_support.h" // from libc++
+#if defined(__has_include)
+#  if __has_include(<sys/syscall.h>)
+#    include <sys/syscall.h>
+#  endif
+#  if __has_include(<unistd.h>)
+#    include <unistd.h>
+#  endif
+#endif
+
+#include <__threading_support>
+#include <cstdint>
+#include <cstring>
+#include <limits.h>
+#include <stdlib.h>
+
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+#  if defined(__ELF__) && defined(_LIBCXXABI_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+#if defined(__clang__)
+#  pragma clang diagnostic push
+#  pragma clang diagnostic ignored "-Wtautological-pointer-compare"
+#elif defined(__GNUC__)
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Waddress"
+#endif
+
+// To make testing possible, this header is included from both cxa_guard.cpp
+// and a number of tests.
+//
+// For this reason we place everything in an anonymous namespace -- even though
+// we're in a header. We want the actual implementation and the tests to have
+// unique definitions of the types in this header (since the tests may depend
+// on function local statics).
+//
+// To enforce this either `BUILDING_CXA_GUARD` or `TESTING_CXA_GUARD` must be
+// defined when including this file. Only `src/cxa_guard.cpp` should define
+// the former.
+#ifdef BUILDING_CXA_GUARD
+#  include "abort_message.h"
+#  define ABORT_WITH_MESSAGE(...) ::abort_message(__VA_ARGS__)
+#elif defined(TESTING_CXA_GUARD)
+#  define ABORT_WITH_MESSAGE(...) ::abort()
+#else
+#  error "Either BUILDING_CXA_GUARD or TESTING_CXA_GUARD must be defined"
+#endif
+
+#if __has_feature(thread_sanitizer)
+extern "C" void __tsan_acquire(void*);
+extern "C" void __tsan_release(void*);
+#else
+#  define __tsan_acquire(addr) ((void)0)
+#  define __tsan_release(addr) ((void)0)
+#endif
+
+namespace __cxxabiv1 {
+// Use an anonymous namespace to ensure that the tests and actual implementation
+// have unique definitions of these symbols.
+namespace {
+
+//===----------------------------------------------------------------------===//
+//                          Misc Utilities
+//===----------------------------------------------------------------------===//
+
+template <class T, T (*Init)()>
+struct LazyValue {
+  LazyValue() : is_init(false) {}
+
+  T& get() {
+    if (!is_init) {
+      value = Init();
+      is_init = true;
+    }
+    return value;
+  }
+
+private:
+  T value;
+  bool is_init = false;
+};
+
+template <class IntType>
+class AtomicInt {
+public:
+  using MemoryOrder = std::__libcpp_atomic_order;
+
+  explicit AtomicInt(IntType* b) : b_(b) {}
+  AtomicInt(AtomicInt const&) = delete;
+  AtomicInt& operator=(AtomicInt const&) = delete;
+
+  IntType load(MemoryOrder ord) { return std::__libcpp_atomic_load(b_, ord); }
+  void store(IntType val, MemoryOrder ord) { std::__libcpp_atomic_store(b_, val, ord); }
+  IntType exchange(IntType new_val, MemoryOrder ord) { return std::__libcpp_atomic_exchange(b_, new_val, ord); }
+  bool compare_exchange(IntType* expected, IntType desired, MemoryOrder ord_success, MemoryOrder ord_failure) {
+    return std::__libcpp_atomic_compare_exchange(b_, expected, desired, ord_success, ord_failure);
+  }
+
+private:
+  IntType* b_;
+};
+
+//===----------------------------------------------------------------------===//
+//                       PlatformGetThreadID
+//===----------------------------------------------------------------------===//
+
+#if defined(__APPLE__) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
+uint32_t PlatformThreadID() {
+  static_assert(sizeof(mach_port_t) == sizeof(uint32_t), "");
+  return static_cast<uint32_t>(pthread_mach_thread_np(std::__libcpp_thread_get_current_id()));
+}
+#elif defined(SYS_gettid) && defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
+uint32_t PlatformThreadID() {
+  static_assert(sizeof(pid_t) == sizeof(uint32_t), "");
+  return static_cast<uint32_t>(syscall(SYS_gettid));
+}
+#else
+constexpr uint32_t (*PlatformThreadID)() = nullptr;
+#endif
+
+//===----------------------------------------------------------------------===//
+//                          GuardByte
+//===----------------------------------------------------------------------===//
+
+static constexpr uint8_t UNSET = 0;
+static constexpr uint8_t COMPLETE_BIT = (1 << 0);
+static constexpr uint8_t PENDING_BIT = (1 << 1);
+static constexpr uint8_t WAITING_BIT = (1 << 2);
+
+/// Manages reads and writes to the guard byte.
+struct GuardByte {
+  GuardByte() = delete;
+  GuardByte(GuardByte const&) = delete;
+  GuardByte& operator=(GuardByte const&) = delete;
+
+  explicit GuardByte(uint8_t* const guard_byte_address) : guard_byte(guard_byte_address) {}
+
+public:
+  /// The guard byte portion of cxa_guard_acquire. Returns true if
+  /// initialization has already been completed.
+  bool acquire() {
+    // if guard_byte is non-zero, we have already completed initialization
+    // (i.e. release has been called)
+    return guard_byte.load(std::_AO_Acquire) != UNSET;
+  }
+
+  /// The guard byte portion of cxa_guard_release.
+  void release() { guard_byte.store(COMPLETE_BIT, std::_AO_Release); }
+
+  /// The guard byte portion of cxa_guard_abort.
+  void abort() {} // Nothing to do
+
+private:
+  AtomicInt<uint8_t> guard_byte;
+};
+
+//===----------------------------------------------------------------------===//
+//                       InitByte Implementations
+//===----------------------------------------------------------------------===//
+//
+// Each initialization byte implementation supports the following methods:
+//
+//  InitByte(uint8_t* _init_byte_address, uint32_t* _thread_id_address)
+//    Construct the InitByte object, initializing our member variables
+//
+//  bool acquire()
+//    Called before we start the initialization. Check if someone else has already started, and if
+//    not to signal our intent to start it ourselves. We determine the current status from the init
+//    byte, which is one of 4 possible values:
+//      COMPLETE:           Initialization was finished by somebody else. Return true.
+//      PENDING:            Somebody has started the initialization already, set the WAITING bit,
+//                          then wait for the init byte to get updated with a new value.
+//      (PENDING|WAITING):  Somebody has started the initialization already, and we're not the
+//                          first one waiting. Wait for the init byte to get updated.
+//      UNSET:              Initialization hasn't successfully completed, and nobody is currently
+//                          performing the initialization. Set the PENDING bit to indicate our
+//                          intention to start the initialization, and return false.
+//    The return value indicates whether initialization has already been completed.
+//
+//  void release()
+//    Called after successfully completing the initialization. Update the init byte to reflect
+//    that, then if anybody else is waiting, wake them up.
+//
+//  void abort()
+//    Called after an error is thrown during the initialization. Reset the init byte to UNSET to
+//    indicate that we're no longer performing the initialization, then if anybody is waiting, wake
+//    them up so they can try performing the initialization.
+//
+
+//===----------------------------------------------------------------------===//
+//                    Single Threaded Implementation
+//===----------------------------------------------------------------------===//
+
+/// InitByteNoThreads - Doesn't use any inter-thread synchronization when
+/// managing reads and writes to the init byte.
+struct InitByteNoThreads {
+  InitByteNoThreads() = delete;
+  InitByteNoThreads(InitByteNoThreads const&) = delete;
+  InitByteNoThreads& operator=(InitByteNoThreads const&) = delete;
+
+  explicit InitByteNoThreads(uint8_t* _init_byte_address, uint32_t*) : init_byte_address(_init_byte_address) {}
+
+  /// The init byte portion of cxa_guard_acquire. Returns true if
+  /// initialization has already been completed.
+  bool acquire() {
+    if (*init_byte_address == COMPLETE_BIT)
+      return true;
+    if (*init_byte_address & PENDING_BIT)
+      ABORT_WITH_MESSAGE("__cxa_guard_acquire detected recursive initialization");
+    *init_byte_address = PENDING_BIT;
+    return false;
+  }
+
+  /// The init byte portion of cxa_guard_release.
+  void release() { *init_byte_address = COMPLETE_BIT; }
+  /// The init byte portion of cxa_guard_abort.
+  void abort() { *init_byte_address = UNSET; }
+
+private:
+  /// The address of the byte used during initialization.
+  uint8_t* const init_byte_address;
+};
+
+//===----------------------------------------------------------------------===//
+//                     Global Mutex Implementation
+//===----------------------------------------------------------------------===//
+
+struct LibcppMutex;
+struct LibcppCondVar;
+
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+struct LibcppMutex {
+  LibcppMutex() = default;
+  LibcppMutex(LibcppMutex const&) = delete;
+  LibcppMutex& operator=(LibcppMutex const&) = delete;
+
+  bool lock() { return std::__libcpp_mutex_lock(&mutex); }
+  bool unlock() { return std::__libcpp_mutex_unlock(&mutex); }
+
+private:
+  friend struct LibcppCondVar;
+  std::__libcpp_mutex_t mutex = _LIBCPP_MUTEX_INITIALIZER;
+};
+
+struct LibcppCondVar {
+  LibcppCondVar() = default;
+  LibcppCondVar(LibcppCondVar const&) = delete;
+  LibcppCondVar& operator=(LibcppCondVar const&) = delete;
+
+  bool wait(LibcppMutex& mut) { return std::__libcpp_condvar_wait(&cond, &mut.mutex); }
+  bool broadcast() { return std::__libcpp_condvar_broadcast(&cond); }
+
+private:
+  std::__libcpp_condvar_t cond = _LIBCPP_CONDVAR_INITIALIZER;
+};
+#else
+struct LibcppMutex {};
+struct LibcppCondVar {};
+#endif // !defined(_LIBCXXABI_HAS_NO_THREADS)
+
+/// InitByteGlobalMutex - Uses a global mutex and condition variable (common to
+/// all static local variables) to manage reads and writes to the init byte.
+template <class Mutex, class CondVar, Mutex& global_mutex, CondVar& global_cond,
+          uint32_t (*GetThreadID)() = PlatformThreadID>
+struct InitByteGlobalMutex {
+
+  explicit InitByteGlobalMutex(uint8_t* _init_byte_address, uint32_t* _thread_id_address)
+      : init_byte_address(_init_byte_address), thread_id_address(_thread_id_address),
+        has_thread_id_support(_thread_id_address != nullptr && GetThreadID != nullptr) {}
+
+public:
+  /// The init byte portion of cxa_guard_acquire. Returns true if
+  /// initialization has already been completed.
+  bool acquire() {
+    LockGuard g("__cxa_guard_acquire");
+    // Check for possible recursive initialization.
+    if (has_thread_id_support && (*init_byte_address & PENDING_BIT)) {
+      if (*thread_id_address == current_thread_id.get())
+        ABORT_WITH_MESSAGE("__cxa_guard_acquire detected recursive initialization");
+    }
+
+    // Wait until the pending bit is not set.
+    while (*init_byte_address & PENDING_BIT) {
+      *init_byte_address |= WAITING_BIT;
+      global_cond.wait(global_mutex);
+    }
+
+    if (*init_byte_address == COMPLETE_BIT)
+      return true;
+
+    if (has_thread_id_support)
+      *thread_id_address = current_thread_id.get();
+
+    *init_byte_address = PENDING_BIT;
+    return false;
+  }
+
+  /// The init byte portion of cxa_guard_release.
+  void release() {
+    bool has_waiting;
+    {
+      LockGuard g("__cxa_guard_release");
+      has_waiting = *init_byte_address & WAITING_BIT;
+      *init_byte_address = COMPLETE_BIT;
+    }
+    if (has_waiting) {
+      if (global_cond.broadcast()) {
+        ABORT_WITH_MESSAGE("%s failed to broadcast", "__cxa_guard_release");
+      }
+    }
+  }
+
+  /// The init byte portion of cxa_guard_abort.
+  void abort() {
+    bool has_waiting;
+    {
+      LockGuard g("__cxa_guard_abort");
+      if (has_thread_id_support)
+        *thread_id_address = 0;
+      has_waiting = *init_byte_address & WAITING_BIT;
+      *init_byte_address = UNSET;
+    }
+    if (has_waiting) {
+      if (global_cond.broadcast()) {
+        ABORT_WITH_MESSAGE("%s failed to broadcast", "__cxa_guard_abort");
+      }
+    }
+  }
+
+private:
+  /// The address of the byte used during initialization.
+  uint8_t* const init_byte_address;
+  /// An optional address storing an identifier for the thread performing initialization.
+  /// It's used to detect recursive initialization.
+  uint32_t* const thread_id_address;
+
+  const bool has_thread_id_support;
+  LazyValue<uint32_t, GetThreadID> current_thread_id;
+
+private:
+  struct LockGuard {
+    LockGuard() = delete;
+    LockGuard(LockGuard const&) = delete;
+    LockGuard& operator=(LockGuard const&) = delete;
+
+    explicit LockGuard(const char* calling_func) : calling_func_(calling_func) {
+      if (global_mutex.lock())
+        ABORT_WITH_MESSAGE("%s failed to acquire mutex", calling_func_);
+    }
+
+    ~LockGuard() {
+      if (global_mutex.unlock())
+        ABORT_WITH_MESSAGE("%s failed to release mutex", calling_func_);
+    }
+
+  private:
+    const char* const calling_func_;
+  };
+};
+
+//===----------------------------------------------------------------------===//
+//                         Futex Implementation
+//===----------------------------------------------------------------------===//
+
+#if defined(SYS_futex)
+void PlatformFutexWait(int* addr, int expect) {
+  constexpr int WAIT = 0;
+  syscall(SYS_futex, addr, WAIT, expect, 0);
+  __tsan_acquire(addr);
+}
+void PlatformFutexWake(int* addr) {
+  constexpr int WAKE = 1;
+  __tsan_release(addr);
+  syscall(SYS_futex, addr, WAKE, INT_MAX);
+}
+#else
+constexpr void (*PlatformFutexWait)(int*, int) = nullptr;
+constexpr void (*PlatformFutexWake)(int*) = nullptr;
+#endif
+
+constexpr bool PlatformSupportsFutex() { return +PlatformFutexWait != nullptr; }
+
+/// InitByteFutex - Uses a futex to manage reads and writes to the init byte.
+template <void (*Wait)(int*, int) = PlatformFutexWait, void (*Wake)(int*) = PlatformFutexWake,
+          uint32_t (*GetThreadIDArg)() = PlatformThreadID>
+struct InitByteFutex {
+
+  explicit InitByteFutex(uint8_t* _init_byte_address, uint32_t* _thread_id_address)
+      : init_byte(_init_byte_address),
+        has_thread_id_support(_thread_id_address != nullptr && GetThreadIDArg != nullptr),
+        thread_id(_thread_id_address),
+        base_address(reinterpret_cast<int*>(/*_init_byte_address & ~0x3*/ _init_byte_address - 1)) {}
+
+public:
+  /// The init byte portion of cxa_guard_acquire. Returns true if
+  /// initialization has already been completed.
+  bool acquire() {
+    while (true) {
+      uint8_t last_val = UNSET;
+      if (init_byte.compare_exchange(&last_val, PENDING_BIT, std::_AO_Acq_Rel, std::_AO_Acquire)) {
+        if (has_thread_id_support) {
+          thread_id.store(current_thread_id.get(), std::_AO_Relaxed);
+        }
+        return false;
+      }
+
+      if (last_val == COMPLETE_BIT)
+        return true;
+
+      if (last_val & PENDING_BIT) {
+
+        // Check for recursive initialization
+        if (has_thread_id_support && thread_id.load(std::_AO_Relaxed) == current_thread_id.get()) {
+          ABORT_WITH_MESSAGE("__cxa_guard_acquire detected recursive initialization");
+        }
+
+        if ((last_val & WAITING_BIT) == 0) {
+          // This compare exchange can fail for several reasons
+          // (1) another thread finished the whole thing before we got here
+          // (2) another thread set the waiting bit we were trying to thread
+          // (3) another thread had an exception and failed to finish
+          if (!init_byte.compare_exchange(&last_val, PENDING_BIT | WAITING_BIT, std::_AO_Acq_Rel, std::_AO_Release)) {
+            // (1) success, via someone else's work!
+            if (last_val == COMPLETE_BIT)
+              return true;
+
+            // (3) someone else, bailed on doing the work, retry from the start!
+            if (last_val == UNSET)
+              continue;
+
+            // (2) the waiting bit got set, so we are happy to keep waiting
+          }
+        }
+        wait_on_initialization();
+      }
+    }
+  }
+
+  /// The init byte portion of cxa_guard_release.
+  void release() {
+    uint8_t old = init_byte.exchange(COMPLETE_BIT, std::_AO_Acq_Rel);
+    if (old & WAITING_BIT)
+      wake_all();
+  }
+
+  /// The init byte portion of cxa_guard_abort.
+  void abort() {
+    if (has_thread_id_support)
+      thread_id.store(0, std::_AO_Relaxed);
+
+    uint8_t old = init_byte.exchange(UNSET, std::_AO_Acq_Rel);
+    if (old & WAITING_BIT)
+      wake_all();
+  }
+
+private:
+  /// Use the futex to wait on the current guard variable. Futex expects a
+  /// 32-bit 4-byte aligned address as the first argument, so we use the 4-byte
+  /// aligned address that encompasses the init byte (i.e. the address of the
+  /// raw guard object that was passed to __cxa_guard_acquire/release/abort).
+  void wait_on_initialization() { Wait(base_address, expected_value_for_futex(PENDING_BIT | WAITING_BIT)); }
+  void wake_all() { Wake(base_address); }
+
+private:
+  AtomicInt<uint8_t> init_byte;
+
+  const bool has_thread_id_support;
+  // Unsafe to use unless has_thread_id_support
+  AtomicInt<uint32_t> thread_id;
+  LazyValue<uint32_t, GetThreadIDArg> current_thread_id;
+
+  /// the 4-byte-aligned address that encompasses the init byte (i.e. the
+  /// address of the raw guard object).
+  int* const base_address;
+
+  /// Create the expected integer value for futex `wait(int* addr, int expected)`.
+  /// We pass the base address as the first argument, So this function creates
+  /// an zero-initialized integer  with `b` copied at the correct offset.
+  static int expected_value_for_futex(uint8_t b) {
+    int dest_val = 0;
+    std::memcpy(reinterpret_cast<char*>(&dest_val) + 1, &b, 1);
+    return dest_val;
+  }
+
+  static_assert(Wait != nullptr && Wake != nullptr, "");
+};
+
+//===----------------------------------------------------------------------===//
+//                          GuardObject
+//===----------------------------------------------------------------------===//
+
+enum class AcquireResult {
+  INIT_IS_DONE,
+  INIT_IS_PENDING,
+};
+constexpr AcquireResult INIT_IS_DONE = AcquireResult::INIT_IS_DONE;
+constexpr AcquireResult INIT_IS_PENDING = AcquireResult::INIT_IS_PENDING;
+
+/// Co-ordinates between GuardByte and InitByte.
+template <class InitByteT>
+struct GuardObject {
+  GuardObject() = delete;
+  GuardObject(GuardObject const&) = delete;
+  GuardObject& operator=(GuardObject const&) = delete;
+
+private:
+  GuardByte guard_byte;
+  InitByteT init_byte;
+
+public:
+  /// ARM Constructor
+  explicit GuardObject(uint32_t* raw_guard_object)
+      : guard_byte(reinterpret_cast<uint8_t*>(raw_guard_object)),
+        init_byte(reinterpret_cast<uint8_t*>(raw_guard_object) + 1, nullptr) {}
+
+  /// Itanium Constructor
+  explicit GuardObject(uint64_t* raw_guard_object)
+      : guard_byte(reinterpret_cast<uint8_t*>(raw_guard_object)),
+        init_byte(reinterpret_cast<uint8_t*>(raw_guard_object) + 1, reinterpret_cast<uint32_t*>(raw_guard_object) + 1) {
+  }
+
+  /// Implements __cxa_guard_acquire.
+  AcquireResult cxa_guard_acquire() {
+    // Use short-circuit evaluation to avoid calling init_byte.acquire when
+    // guard_byte.acquire returns true. (i.e. don't call it when we know from
+    // the guard byte that initialization has already been completed)
+    if (guard_byte.acquire() || init_byte.acquire())
+      return INIT_IS_DONE;
+    return INIT_IS_PENDING;
+  }
+
+  /// Implements __cxa_guard_release.
+  void cxa_guard_release() {
+    // Update guard byte first, so if somebody is woken up by init_byte.release
+    // and comes all the way back around to __cxa_guard_acquire again, they see
+    // it as having completed initialization.
+    guard_byte.release();
+    init_byte.release();
+  }
+
+  /// Implements __cxa_guard_abort.
+  void cxa_guard_abort() {
+    guard_byte.abort();
+    init_byte.abort();
+  }
+};
+
+//===----------------------------------------------------------------------===//
+//                          Convenience Classes
+//===----------------------------------------------------------------------===//
+
+/// NoThreadsGuard - Manages initialization without performing any inter-thread
+/// synchronization.
+using NoThreadsGuard = GuardObject<InitByteNoThreads>;
+
+/// GlobalMutexGuard - Manages initialization using a global mutex and
+/// condition variable.
+template <class Mutex, class CondVar, Mutex& global_mutex, CondVar& global_cond,
+          uint32_t (*GetThreadID)() = PlatformThreadID>
+using GlobalMutexGuard = GuardObject<InitByteGlobalMutex<Mutex, CondVar, global_mutex, global_cond, GetThreadID>>;
+
+/// FutexGuard - Manages initialization using atomics and the futex syscall for
+/// waiting and waking.
+template <void (*Wait)(int*, int) = PlatformFutexWait, void (*Wake)(int*) = PlatformFutexWake,
+          uint32_t (*GetThreadIDArg)() = PlatformThreadID>
+using FutexGuard = GuardObject<InitByteFutex<Wait, Wake, GetThreadIDArg>>;
+
+//===----------------------------------------------------------------------===//
+//
+//===----------------------------------------------------------------------===//
+
+template <class T>
+struct GlobalStatic {
+  static T instance;
+};
+template <class T>
+_LIBCPP_CONSTINIT T GlobalStatic<T>::instance = {};
+
+enum class Implementation { NoThreads, GlobalMutex, Futex };
+
+template <Implementation Impl>
+struct SelectImplementation;
+
+template <>
+struct SelectImplementation<Implementation::NoThreads> {
+  using type = NoThreadsGuard;
+};
+
+template <>
+struct SelectImplementation<Implementation::GlobalMutex> {
+  using type = GlobalMutexGuard<LibcppMutex, LibcppCondVar, GlobalStatic<LibcppMutex>::instance,
+                                GlobalStatic<LibcppCondVar>::instance, PlatformThreadID>;
+};
+
+template <>
+struct SelectImplementation<Implementation::Futex> {
+  using type = FutexGuard<PlatformFutexWait, PlatformFutexWake, PlatformThreadID>;
+};
+
+// TODO(EricWF): We should prefer the futex implementation when available. But
+// it should be done in a separate step from adding the implementation.
+constexpr Implementation CurrentImplementation =
+#if defined(_LIBCXXABI_HAS_NO_THREADS)
+    Implementation::NoThreads;
+#elif defined(_LIBCXXABI_USE_FUTEX)
+    Implementation::Futex;
+#else
+    Implementation::GlobalMutex;
+#endif
+
+static_assert(CurrentImplementation != Implementation::Futex || PlatformSupportsFutex(),
+              "Futex selected but not supported");
+
+using SelectedImplementation = SelectImplementation<CurrentImplementation>::type;
+
+} // end namespace
+} // end namespace __cxxabiv1
+
+#if defined(__clang__)
+#  pragma clang diagnostic pop
+#elif defined(__GNUC__)
+#  pragma GCC diagnostic pop
+#endif
+
+#endif // LIBCXXABI_SRC_INCLUDE_CXA_GUARD_IMPL_H
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_handlers.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_handlers.cpp
new file mode 100644
index 0000000..344250d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_handlers.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// This file implements the functionality associated with the terminate_handler,
+// unexpected_handler, and new_handler.
+//===----------------------------------------------------------------------===//
+
+#include <stdexcept>
+#include <new>
+#include <exception>
+#include "abort_message.h"
+#include "cxxabi.h"
+#include "cxa_handlers.h"
+#include "cxa_exception.h"
+#include "private_typeinfo.h"
+#include "include/atomic_support.h" // from libc++
+
+namespace std
+{
+
+unexpected_handler
+get_unexpected() noexcept
+{
+    return __libcpp_atomic_load(&__cxa_unexpected_handler, _AO_Acquire);
+}
+
+void
+__unexpected(unexpected_handler func)
+{
+    func();
+    // unexpected handler should not return
+    abort_message("unexpected_handler unexpectedly returned");
+}
+
+__attribute__((noreturn))
+void
+unexpected()
+{
+    __unexpected(get_unexpected());
+}
+
+terminate_handler
+get_terminate() noexcept
+{
+    return __libcpp_atomic_load(&__cxa_terminate_handler, _AO_Acquire);
+}
+
+void
+__terminate(terminate_handler func) noexcept
+{
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+        func();
+        // handler should not return
+        abort_message("terminate_handler unexpectedly returned");
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+        // handler should not throw exception
+        abort_message("terminate_handler unexpectedly threw an exception");
+    }
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+}
+
+__attribute__((noreturn))
+void
+terminate() noexcept
+{
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    // If there might be an uncaught exception
+    using namespace __cxxabiv1;
+    __cxa_eh_globals* globals = __cxa_get_globals_fast();
+    if (globals)
+    {
+        __cxa_exception* exception_header = globals->caughtExceptions;
+        if (exception_header)
+        {
+            _Unwind_Exception* unwind_exception =
+                reinterpret_cast<_Unwind_Exception*>(exception_header + 1) - 1;
+            if (__isOurExceptionClass(unwind_exception))
+                __terminate(exception_header->terminateHandler);
+        }
+    }
+#endif
+    __terminate(get_terminate());
+}
+
+new_handler
+get_new_handler() noexcept
+{
+    return __libcpp_atomic_load(&__cxa_new_handler, _AO_Acquire);
+}
+
+}  // std
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_handlers.h b/app/src/main/cpp/libcxx/src/abi/cxa_handlers.h
new file mode 100644
index 0000000..3d8dc6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_handlers.h
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// This file implements the functionality associated with the terminate_handler,
+//   unexpected_handler, and new_handler.
+//===----------------------------------------------------------------------===//
+
+#ifndef _CXA_HANDLERS_H
+#define _CXA_HANDLERS_H
+
+#include "__cxxabi_config.h"
+
+#include <exception>
+
+namespace std
+{
+
+_LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN
+void
+__unexpected(unexpected_handler func);
+
+_LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN
+void
+__terminate(terminate_handler func) noexcept;
+
+}  // std
+
+extern "C"
+{
+
+_LIBCXXABI_DATA_VIS extern void (*__cxa_terminate_handler)();
+_LIBCXXABI_DATA_VIS extern void (*__cxa_unexpected_handler)();
+_LIBCXXABI_DATA_VIS extern void (*__cxa_new_handler)();
+
+/*
+
+    At some point in the future these three symbols will become
+    C++11 atomic variables:
+
+    extern std::atomic<std::terminate_handler>  __cxa_terminate_handler;
+    extern std::atomic<std::unexpected_handler> __cxa_unexpected_handler;
+    extern std::atomic<std::new_handler>        __cxa_new_handler;
+
+    This change will not impact their ABI.  But it will allow for a
+    portable performance optimization.
+
+*/
+
+} // extern "C"
+
+#endif // _CXA_HANDLERS_H
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_noexception.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_noexception.cpp
new file mode 100644
index 0000000..4a803f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_noexception.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the "Exception Handling APIs"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
+//
+//===----------------------------------------------------------------------===//
+
+// Support functions for the no-exceptions libc++ library
+
+#include "cxxabi.h"
+
+#include <exception>        // for std::terminate
+#include "cxa_exception.h"
+#include "cxa_handlers.h"
+
+namespace __cxxabiv1 {
+
+extern "C" {
+
+void
+__cxa_increment_exception_refcount(void *thrown_object) throw() {
+    if (thrown_object != nullptr)
+        std::terminate();
+}
+
+void
+__cxa_decrement_exception_refcount(void *thrown_object) throw() {
+    if (thrown_object != nullptr)
+      std::terminate();
+}
+
+
+void *__cxa_current_primary_exception() throw() { return nullptr; }
+
+void
+__cxa_rethrow_primary_exception(void* thrown_object) {
+    if (thrown_object != nullptr)
+      std::terminate();
+}
+
+bool
+__cxa_uncaught_exception() throw() { return false; }
+
+unsigned int
+__cxa_uncaught_exceptions() throw() { return 0; }
+
+}  // extern "C"
+
+// provide dummy implementations for the 'no exceptions' case.
+uint64_t __getExceptionClass  (const _Unwind_Exception*)           { return 0; }
+void     __setExceptionClass  (      _Unwind_Exception*, uint64_t) {}
+bool     __isOurExceptionClass(const _Unwind_Exception*)           { return false; }
+
+}  // abi
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_personality.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_personality.cpp
new file mode 100644
index 0000000..b28c58d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_personality.cpp
@@ -0,0 +1,1315 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the "Exception Handling APIs"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
+//  http://www.intel.com/design/itanium/downloads/245358.htm
+//
+//===----------------------------------------------------------------------===//
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <typeinfo>
+
+#include "__cxxabi_config.h"
+#include "cxa_exception.h"
+#include "cxa_handlers.h"
+#include "private_typeinfo.h"
+#include "unwind.h"
+
+// TODO: This is a temporary workaround for libc++abi to recognize that it's being
+// built against LLVM's libunwind. LLVM's libunwind started reporting _LIBUNWIND_VERSION
+// in LLVM 15 -- we can remove this workaround after shipping LLVM 17. Once we remove
+// this workaround, it won't be possible to build libc++abi against libunwind headers
+// from LLVM 14 and before anymore.
+#if defined(____LIBUNWIND_CONFIG_H__) && !defined(_LIBUNWIND_VERSION)
+#   define _LIBUNWIND_VERSION
+#endif
+
+#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
+#include <windows.h>
+#include <winnt.h>
+
+extern "C" EXCEPTION_DISPOSITION _GCC_specific_handler(PEXCEPTION_RECORD,
+                                                       void *, PCONTEXT,
+                                                       PDISPATCHER_CONTEXT,
+                                                       _Unwind_Personality_Fn);
+#endif
+
+/*
+    Exception Header Layout:
+
++---------------------------+-----------------------------+---------------+
+| __cxa_exception           | _Unwind_Exception CLNGC++\0 | thrown object |
++---------------------------+-----------------------------+---------------+
+                                                          ^
+                                                          |
+  +-------------------------------------------------------+
+  |
++---------------------------+-----------------------------+
+| __cxa_dependent_exception | _Unwind_Exception CLNGC++\1 |
++---------------------------+-----------------------------+
+
+    Exception Handling Table Layout:
+
++-----------------+--------+
+| lpStartEncoding | (char) |
++---------+-------+--------+---------------+-----------------------+
+| lpStart | (encoded with lpStartEncoding) | defaults to funcStart |
++---------+-----+--------+-----------------+---------------+-------+
+| ttypeEncoding | (char) | Encoding of the type_info table |
++---------------+-+------+----+----------------------------+----------------+
+| classInfoOffset | (ULEB128) | Offset to type_info table, defaults to null |
++-----------------++--------+-+----------------------------+----------------+
+| callSiteEncoding | (char) | Encoding for Call Site Table |
++------------------+--+-----+-----+------------------------+--------------------------+
+| callSiteTableLength | (ULEB128) | Call Site Table length, used to find Action table |
++---------------------+-----------+---------------------------------------------------+
+#ifndef __USING_SJLJ_EXCEPTIONS__
++---------------------+-----------+------------------------------------------------+
+| Beginning of Call Site Table            The current ip lies within the           |
+| ...                                     (start, length) range of one of these    |
+|                                         call sites. There may be action needed.  |
+| +-------------+---------------------------------+------------------------------+ |
+| | start       | (encoded with callSiteEncoding) | offset relative to funcStart | |
+| | length      | (encoded with callSiteEncoding) | length of code fragment      | |
+| | landingPad  | (encoded with callSiteEncoding) | offset relative to lpStart   | |
+| | actionEntry | (ULEB128)                       | Action Table Index 1-based   | |
+| |             |                                 | actionEntry == 0 -> cleanup  | |
+| +-------------+---------------------------------+------------------------------+ |
+| ...                                                                              |
++----------------------------------------------------------------------------------+
+#else  // __USING_SJLJ_EXCEPTIONS__
++---------------------+-----------+------------------------------------------------+
+| Beginning of Call Site Table            The current ip is a 1-based index into   |
+| ...                                     this table.  Or it is -1 meaning no      |
+|                                         action is needed.  Or it is 0 meaning    |
+|                                         terminate.                               |
+| +-------------+---------------------------------+------------------------------+ |
+| | landingPad  | (ULEB128)                       | offset relative to lpStart   | |
+| | actionEntry | (ULEB128)                       | Action Table Index 1-based   | |
+| |             |                                 | actionEntry == 0 -> cleanup  | |
+| +-------------+---------------------------------+------------------------------+ |
+| ...                                                                              |
++----------------------------------------------------------------------------------+
+#endif // __USING_SJLJ_EXCEPTIONS__
++---------------------------------------------------------------------+
+| Beginning of Action Table       ttypeIndex == 0 : cleanup           |
+| ...                             ttypeIndex  > 0 : catch             |
+|                                 ttypeIndex  < 0 : exception spec    |
+| +--------------+-----------+--------------------------------------+ |
+| | ttypeIndex   | (SLEB128) | Index into type_info Table (1-based) | |
+| | actionOffset | (SLEB128) | Offset into next Action Table entry  | |
+| +--------------+-----------+--------------------------------------+ |
+| ...                                                                 |
++---------------------------------------------------------------------+-----------------+
+| type_info Table, but classInfoOffset does *not* point here!                           |
+| +----------------+------------------------------------------------+-----------------+ |
+| | Nth type_info* | Encoded with ttypeEncoding, 0 means catch(...) | ttypeIndex == N | |
+| +----------------+------------------------------------------------+-----------------+ |
+| ...                                                                                   |
+| +----------------+------------------------------------------------+-----------------+ |
+| | 1st type_info* | Encoded with ttypeEncoding, 0 means catch(...) | ttypeIndex == 1 | |
+| +----------------+------------------------------------------------+-----------------+ |
+| +---------------------------------------+-----------+------------------------------+  |
+| | 1st ttypeIndex for 1st exception spec | (ULEB128) | classInfoOffset points here! |  |
+| | ...                                   | (ULEB128) |                              |  |
+| | Mth ttypeIndex for 1st exception spec | (ULEB128) |                              |  |
+| | 0                                     | (ULEB128) |                              |  |
+| +---------------------------------------+------------------------------------------+  |
+| ...                                                                                   |
+| +---------------------------------------+------------------------------------------+  |
+| | 0                                     | (ULEB128) | throw()                      |  |
+| +---------------------------------------+------------------------------------------+  |
+| ...                                                                                   |
+| +---------------------------------------+------------------------------------------+  |
+| | 1st ttypeIndex for Nth exception spec | (ULEB128) |                              |  |
+| | ...                                   | (ULEB128) |                              |  |
+| | Mth ttypeIndex for Nth exception spec | (ULEB128) |                              |  |
+| | 0                                     | (ULEB128) |                              |  |
+| +---------------------------------------+------------------------------------------+  |
++---------------------------------------------------------------------------------------+
+
+Notes:
+
+*  ttypeIndex in the Action Table, and in the exception spec table, is an index,
+     not a byte count, if positive.  It is a negative index offset of
+     classInfoOffset and the sizeof entry depends on ttypeEncoding.
+   But if ttypeIndex is negative, it is a positive 1-based byte offset into the
+     type_info Table.
+   And if ttypeIndex is zero, it refers to a catch (...).
+
+*  landingPad can be 0, this implies there is nothing to be done.
+
+*  landingPad != 0 and actionEntry == 0 implies a cleanup needs to be done
+     @landingPad.
+
+*  A cleanup can also be found under landingPad != 0 and actionEntry != 0 in
+     the Action Table with ttypeIndex == 0.
+*/
+
+namespace __cxxabiv1
+{
+
+namespace
+{
+
+template <class AsType>
+uintptr_t readPointerHelper(const uint8_t*& p) {
+    AsType value;
+    memcpy(&value, p, sizeof(AsType));
+    p += sizeof(AsType);
+    return static_cast<uintptr_t>(value);
+}
+
+} // end namespace
+
+extern "C"
+{
+
+// private API
+
+// Heavily borrowed from llvm/examples/ExceptionDemo/ExceptionDemo.cpp
+
+// DWARF Constants
+enum
+{
+    DW_EH_PE_absptr   = 0x00,
+    DW_EH_PE_uleb128  = 0x01,
+    DW_EH_PE_udata2   = 0x02,
+    DW_EH_PE_udata4   = 0x03,
+    DW_EH_PE_udata8   = 0x04,
+    DW_EH_PE_sleb128  = 0x09,
+    DW_EH_PE_sdata2   = 0x0A,
+    DW_EH_PE_sdata4   = 0x0B,
+    DW_EH_PE_sdata8   = 0x0C,
+    DW_EH_PE_pcrel    = 0x10,
+    DW_EH_PE_textrel  = 0x20,
+    DW_EH_PE_datarel  = 0x30,
+    DW_EH_PE_funcrel  = 0x40,
+    DW_EH_PE_aligned  = 0x50,
+    DW_EH_PE_indirect = 0x80,
+    DW_EH_PE_omit     = 0xFF
+};
+
+/// Read a uleb128 encoded value and advance pointer
+/// See Variable Length Data Appendix C in:
+/// @link http://dwarfstd.org/Dwarf4.pdf @unlink
+/// @param data reference variable holding memory pointer to decode from
+/// @returns decoded value
+static
+uintptr_t
+readULEB128(const uint8_t** data)
+{
+    uintptr_t result = 0;
+    uintptr_t shift = 0;
+    unsigned char byte;
+    const uint8_t *p = *data;
+    do
+    {
+        byte = *p++;
+        result |= static_cast<uintptr_t>(byte & 0x7F) << shift;
+        shift += 7;
+    } while (byte & 0x80);
+    *data = p;
+    return result;
+}
+
+/// Read a sleb128 encoded value and advance pointer
+/// See Variable Length Data Appendix C in:
+/// @link http://dwarfstd.org/Dwarf4.pdf @unlink
+/// @param data reference variable holding memory pointer to decode from
+/// @returns decoded value
+static
+intptr_t
+readSLEB128(const uint8_t** data)
+{
+    uintptr_t result = 0;
+    uintptr_t shift = 0;
+    unsigned char byte;
+    const uint8_t *p = *data;
+    do
+    {
+        byte = *p++;
+        result |= static_cast<uintptr_t>(byte & 0x7F) << shift;
+        shift += 7;
+    } while (byte & 0x80);
+    *data = p;
+    if ((byte & 0x40) && (shift < (sizeof(result) << 3)))
+        result |= static_cast<uintptr_t>(~0) << shift;
+    return static_cast<intptr_t>(result);
+}
+
+/// Read a pointer encoded value and advance pointer
+/// See Variable Length Data in:
+/// @link http://dwarfstd.org/Dwarf3.pdf @unlink
+/// @param data reference variable holding memory pointer to decode from
+/// @param encoding dwarf encoding type
+/// @param base for adding relative offset, default to 0
+/// @returns decoded value
+static
+uintptr_t
+readEncodedPointer(const uint8_t** data, uint8_t encoding, uintptr_t base = 0)
+{
+    uintptr_t result = 0;
+    if (encoding == DW_EH_PE_omit)
+        return result;
+    const uint8_t* p = *data;
+    // first get value
+    switch (encoding & 0x0F)
+    {
+    case DW_EH_PE_absptr:
+        result = readPointerHelper<uintptr_t>(p);
+        break;
+    case DW_EH_PE_uleb128:
+        result = readULEB128(&p);
+        break;
+    case DW_EH_PE_sleb128:
+        result = static_cast<uintptr_t>(readSLEB128(&p));
+        break;
+    case DW_EH_PE_udata2:
+        result = readPointerHelper<uint16_t>(p);
+        break;
+    case DW_EH_PE_udata4:
+        result = readPointerHelper<uint32_t>(p);
+        break;
+    case DW_EH_PE_udata8:
+        result = readPointerHelper<uint64_t>(p);
+        break;
+    case DW_EH_PE_sdata2:
+        result = readPointerHelper<int16_t>(p);
+        break;
+    case DW_EH_PE_sdata4:
+        result = readPointerHelper<int32_t>(p);
+        break;
+    case DW_EH_PE_sdata8:
+        result = readPointerHelper<int64_t>(p);
+        break;
+    default:
+        // not supported
+        abort();
+        break;
+    }
+    // then add relative offset
+    switch (encoding & 0x70)
+    {
+    case DW_EH_PE_absptr:
+        // do nothing
+        break;
+    case DW_EH_PE_pcrel:
+        if (result)
+            result += (uintptr_t)(*data);
+        break;
+    case DW_EH_PE_datarel:
+        assert((base != 0) && "DW_EH_PE_datarel is invalid with a base of 0");
+        if (result)
+            result += base;
+        break;
+    case DW_EH_PE_textrel:
+    case DW_EH_PE_funcrel:
+    case DW_EH_PE_aligned:
+    default:
+        // not supported
+        abort();
+        break;
+    }
+    // then apply indirection
+    if (result && (encoding & DW_EH_PE_indirect))
+        result = *((uintptr_t*)result);
+    *data = p;
+    return result;
+}
+
+static
+void
+call_terminate(bool native_exception, _Unwind_Exception* unwind_exception)
+{
+    __cxa_begin_catch(unwind_exception);
+    if (native_exception)
+    {
+        // Use the stored terminate_handler if possible
+        __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
+        std::__terminate(exception_header->terminateHandler);
+    }
+    std::terminate();
+}
+
+#if defined(_LIBCXXABI_ARM_EHABI)
+static const void* read_target2_value(const void* ptr)
+{
+    uintptr_t offset = *reinterpret_cast<const uintptr_t*>(ptr);
+    if (!offset)
+        return 0;
+    // "ARM EABI provides a TARGET2 relocation to describe these typeinfo
+    // pointers. The reason being it allows their precise semantics to be
+    // deferred to the linker. For bare-metal they turn into absolute
+    // relocations. For linux they turn into GOT-REL relocations."
+    // https://gcc.gnu.org/ml/gcc-patches/2009-08/msg00264.html
+#if defined(LIBCXXABI_BAREMETAL)
+    return reinterpret_cast<const void*>(reinterpret_cast<uintptr_t>(ptr) +
+                                         offset);
+#else
+    return *reinterpret_cast<const void **>(reinterpret_cast<uintptr_t>(ptr) +
+                                            offset);
+#endif
+}
+
+static const __shim_type_info*
+get_shim_type_info(uint64_t ttypeIndex, const uint8_t* classInfo,
+                   uint8_t ttypeEncoding, bool native_exception,
+                   _Unwind_Exception* unwind_exception, uintptr_t /*base*/ = 0)
+{
+    if (classInfo == 0)
+    {
+        // this should not happen.  Indicates corrupted eh_table.
+        call_terminate(native_exception, unwind_exception);
+    }
+
+    assert(((ttypeEncoding == DW_EH_PE_absptr) ||  // LLVM or GCC 4.6
+            (ttypeEncoding == DW_EH_PE_pcrel) ||  // GCC 4.7 baremetal
+            (ttypeEncoding == (DW_EH_PE_pcrel | DW_EH_PE_indirect))) &&  // GCC 4.7 linux
+           "Unexpected TTypeEncoding");
+    (void)ttypeEncoding;
+
+    const uint8_t* ttypePtr = classInfo - ttypeIndex * sizeof(uintptr_t);
+    return reinterpret_cast<const __shim_type_info *>(
+        read_target2_value(ttypePtr));
+}
+#else // !defined(_LIBCXXABI_ARM_EHABI)
+static
+const __shim_type_info*
+get_shim_type_info(uint64_t ttypeIndex, const uint8_t* classInfo,
+                   uint8_t ttypeEncoding, bool native_exception,
+                   _Unwind_Exception* unwind_exception, uintptr_t base = 0)
+{
+    if (classInfo == 0)
+    {
+        // this should not happen.  Indicates corrupted eh_table.
+        call_terminate(native_exception, unwind_exception);
+    }
+    switch (ttypeEncoding & 0x0F)
+    {
+    case DW_EH_PE_absptr:
+        ttypeIndex *= sizeof(void*);
+        break;
+    case DW_EH_PE_udata2:
+    case DW_EH_PE_sdata2:
+        ttypeIndex *= 2;
+        break;
+    case DW_EH_PE_udata4:
+    case DW_EH_PE_sdata4:
+        ttypeIndex *= 4;
+        break;
+    case DW_EH_PE_udata8:
+    case DW_EH_PE_sdata8:
+        ttypeIndex *= 8;
+        break;
+    default:
+        // this should not happen.   Indicates corrupted eh_table.
+        call_terminate(native_exception, unwind_exception);
+    }
+    classInfo -= ttypeIndex;
+    return (const __shim_type_info*)readEncodedPointer(&classInfo,
+                                                       ttypeEncoding, base);
+}
+#endif // !defined(_LIBCXXABI_ARM_EHABI)
+
+/*
+    This is checking a thrown exception type, excpType, against a possibly empty
+    list of catchType's which make up an exception spec.
+
+    An exception spec acts like a catch handler, but in reverse.  This "catch
+    handler" will catch an excpType if and only if none of the catchType's in
+    the list will catch a excpType.  If any catchType in the list can catch an
+    excpType, then this exception spec does not catch the excpType.
+*/
+#if defined(_LIBCXXABI_ARM_EHABI)
+static
+bool
+exception_spec_can_catch(int64_t specIndex, const uint8_t* classInfo,
+                         uint8_t ttypeEncoding, const __shim_type_info* excpType,
+                         void* adjustedPtr, _Unwind_Exception* unwind_exception,
+                         uintptr_t /*base*/ = 0)
+{
+    if (classInfo == 0)
+    {
+        // this should not happen.   Indicates corrupted eh_table.
+        call_terminate(false, unwind_exception);
+    }
+
+    assert(((ttypeEncoding == DW_EH_PE_absptr) ||  // LLVM or GCC 4.6
+            (ttypeEncoding == DW_EH_PE_pcrel) ||  // GCC 4.7 baremetal
+            (ttypeEncoding == (DW_EH_PE_pcrel | DW_EH_PE_indirect))) &&  // GCC 4.7 linux
+           "Unexpected TTypeEncoding");
+    (void)ttypeEncoding;
+
+    // specIndex is negative of 1-based byte offset into classInfo;
+    specIndex = -specIndex;
+    --specIndex;
+    const void** temp = reinterpret_cast<const void**>(
+        reinterpret_cast<uintptr_t>(classInfo) +
+        static_cast<uintptr_t>(specIndex) * sizeof(uintptr_t));
+    // If any type in the spec list can catch excpType, return false, else return true
+    //    adjustments to adjustedPtr are ignored.
+    while (true)
+    {
+        // ARM EHABI exception specification table (filter table) consists of
+        // several pointers which will directly point to the type info object
+        // (instead of ttypeIndex).  The table will be terminated with 0.
+        const void** ttypePtr = temp++;
+        if (*ttypePtr == 0)
+            break;
+        // We can get the __shim_type_info simply by performing a
+        // R_ARM_TARGET2 relocation, and cast the result to __shim_type_info.
+        const __shim_type_info* catchType =
+            static_cast<const __shim_type_info*>(read_target2_value(ttypePtr));
+        void* tempPtr = adjustedPtr;
+        if (catchType->can_catch(excpType, tempPtr))
+            return false;
+    }
+    return true;
+}
+#else
+static
+bool
+exception_spec_can_catch(int64_t specIndex, const uint8_t* classInfo,
+                         uint8_t ttypeEncoding, const __shim_type_info* excpType,
+                         void* adjustedPtr, _Unwind_Exception* unwind_exception,
+                         uintptr_t base = 0)
+{
+    if (classInfo == 0)
+    {
+        // this should not happen.   Indicates corrupted eh_table.
+        call_terminate(false, unwind_exception);
+    }
+    // specIndex is negative of 1-based byte offset into classInfo;
+    specIndex = -specIndex;
+    --specIndex;
+    const uint8_t* temp = classInfo + specIndex;
+    // If any type in the spec list can catch excpType, return false, else return true
+    //    adjustments to adjustedPtr are ignored.
+    while (true)
+    {
+        uint64_t ttypeIndex = readULEB128(&temp);
+        if (ttypeIndex == 0)
+            break;
+        const __shim_type_info* catchType = get_shim_type_info(ttypeIndex,
+                                                               classInfo,
+                                                               ttypeEncoding,
+                                                               true,
+                                                               unwind_exception,
+                                                               base);
+        void* tempPtr = adjustedPtr;
+        if (catchType->can_catch(excpType, tempPtr))
+            return false;
+    }
+    return true;
+}
+#endif
+
+static
+void*
+get_thrown_object_ptr(_Unwind_Exception* unwind_exception)
+{
+    // Even for foreign exceptions, the exception object is *probably* at unwind_exception + 1
+    //    Regardless, this library is prohibited from touching a foreign exception
+    void* adjustedPtr = unwind_exception + 1;
+    if (__getExceptionClass(unwind_exception) == kOurDependentExceptionClass)
+        adjustedPtr = ((__cxa_dependent_exception*)adjustedPtr - 1)->primaryException;
+    return adjustedPtr;
+}
+
+namespace
+{
+
+struct scan_results
+{
+    int64_t        ttypeIndex;   // > 0 catch handler, < 0 exception spec handler, == 0 a cleanup
+    const uint8_t* actionRecord;         // Currently unused.  Retained to ease future maintenance.
+    const uint8_t* languageSpecificData;  // Needed only for __cxa_call_unexpected
+    uintptr_t      landingPad;   // null -> nothing found, else something found
+    void*          adjustedPtr;  // Used in cxa_exception.cpp
+    _Unwind_Reason_Code reason;  // One of _URC_FATAL_PHASE1_ERROR,
+                                 //        _URC_FATAL_PHASE2_ERROR,
+                                 //        _URC_CONTINUE_UNWIND,
+                                 //        _URC_HANDLER_FOUND
+};
+
+}  // unnamed namespace
+
+static
+void
+set_registers(_Unwind_Exception* unwind_exception, _Unwind_Context* context,
+              const scan_results& results)
+{
+#if defined(__USING_SJLJ_EXCEPTIONS__)
+#define __builtin_eh_return_data_regno(regno) regno
+#elif defined(__ibmxl__)
+// IBM xlclang++ compiler does not support __builtin_eh_return_data_regno.
+#define __builtin_eh_return_data_regno(regno) regno + 3
+#endif
+  _Unwind_SetGR(context, __builtin_eh_return_data_regno(0),
+                reinterpret_cast<uintptr_t>(unwind_exception));
+  _Unwind_SetGR(context, __builtin_eh_return_data_regno(1),
+                static_cast<uintptr_t>(results.ttypeIndex));
+  _Unwind_SetIP(context, results.landingPad);
+}
+
+/*
+    There are 3 types of scans needed:
+
+    1.  Scan for handler with native or foreign exception.  If handler found,
+        save state and return _URC_HANDLER_FOUND, else return _URC_CONTINUE_UNWIND.
+        May also report an error on invalid input.
+        May terminate for invalid exception table.
+        _UA_SEARCH_PHASE
+
+    2.  Scan for handler with foreign exception.  Must return _URC_HANDLER_FOUND,
+        or call terminate.
+        _UA_CLEANUP_PHASE && _UA_HANDLER_FRAME && !native_exception
+
+    3.  Scan for cleanups.  If a handler is found and this isn't forced unwind,
+        then terminate, otherwise ignore the handler and keep looking for cleanup.
+        If a cleanup is found, return _URC_HANDLER_FOUND, else return _URC_CONTINUE_UNWIND.
+        May also report an error on invalid input.
+        May terminate for invalid exception table.
+        _UA_CLEANUP_PHASE && !_UA_HANDLER_FRAME
+*/
+
+static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
+                        bool native_exception,
+                        _Unwind_Exception *unwind_exception,
+                        _Unwind_Context *context) {
+    // Initialize results to found nothing but an error
+    results.ttypeIndex = 0;
+    results.actionRecord = 0;
+    results.languageSpecificData = 0;
+    results.landingPad = 0;
+    results.adjustedPtr = 0;
+    results.reason = _URC_FATAL_PHASE1_ERROR;
+    // Check for consistent actions
+    if (actions & _UA_SEARCH_PHASE)
+    {
+        // Do Phase 1
+        if (actions & (_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME | _UA_FORCE_UNWIND))
+        {
+            // None of these flags should be set during Phase 1
+            //   Client error
+            results.reason = _URC_FATAL_PHASE1_ERROR;
+            return;
+        }
+    }
+    else if (actions & _UA_CLEANUP_PHASE)
+    {
+        if ((actions & _UA_HANDLER_FRAME) && (actions & _UA_FORCE_UNWIND))
+        {
+            // _UA_HANDLER_FRAME should only be set if phase 1 found a handler.
+            // If _UA_FORCE_UNWIND is set, phase 1 shouldn't have happened.
+            //    Client error
+            results.reason = _URC_FATAL_PHASE2_ERROR;
+            return;
+        }
+    }
+    else // Neither _UA_SEARCH_PHASE nor _UA_CLEANUP_PHASE is set
+    {
+        // One of these should be set.
+        //   Client error
+        results.reason = _URC_FATAL_PHASE1_ERROR;
+        return;
+    }
+    // Start scan by getting exception table address.
+    const uint8_t *lsda = (const uint8_t *)_Unwind_GetLanguageSpecificData(context);
+    if (lsda == 0)
+    {
+        // There is no exception table
+        results.reason = _URC_CONTINUE_UNWIND;
+        return;
+    }
+    results.languageSpecificData = lsda;
+#if defined(_AIX)
+    uintptr_t base = _Unwind_GetDataRelBase(context);
+#else
+    uintptr_t base = 0;
+#endif
+    // Get the current instruction pointer and offset it before next
+    // instruction in the current frame which threw the exception.
+    uintptr_t ip = _Unwind_GetIP(context) - 1;
+    // Get beginning current frame's code (as defined by the
+    // emitted dwarf code)
+    uintptr_t funcStart = _Unwind_GetRegionStart(context);
+#ifdef __USING_SJLJ_EXCEPTIONS__
+    if (ip == uintptr_t(-1))
+    {
+        // no action
+        results.reason = _URC_CONTINUE_UNWIND;
+        return;
+    }
+    else if (ip == 0)
+        call_terminate(native_exception, unwind_exception);
+    // ip is 1-based index into call site table
+#else  // !__USING_SJLJ_EXCEPTIONS__
+    uintptr_t ipOffset = ip - funcStart;
+#endif // !defined(_USING_SLJL_EXCEPTIONS__)
+    const uint8_t* classInfo = NULL;
+    // Note: See JITDwarfEmitter::EmitExceptionTable(...) for corresponding
+    //       dwarf emission
+    // Parse LSDA header.
+    uint8_t lpStartEncoding = *lsda++;
+    const uint8_t* lpStart =
+        (const uint8_t*)readEncodedPointer(&lsda, lpStartEncoding, base);
+    if (lpStart == 0)
+        lpStart = (const uint8_t*)funcStart;
+    uint8_t ttypeEncoding = *lsda++;
+    if (ttypeEncoding != DW_EH_PE_omit)
+    {
+        // Calculate type info locations in emitted dwarf code which
+        // were flagged by type info arguments to llvm.eh.selector
+        // intrinsic
+        uintptr_t classInfoOffset = readULEB128(&lsda);
+        classInfo = lsda + classInfoOffset;
+    }
+    // Walk call-site table looking for range that
+    // includes current PC.
+    uint8_t callSiteEncoding = *lsda++;
+#ifdef __USING_SJLJ_EXCEPTIONS__
+    (void)callSiteEncoding;  // When using SjLj exceptions, callSiteEncoding is never used
+#endif
+    uint32_t callSiteTableLength = static_cast<uint32_t>(readULEB128(&lsda));
+    const uint8_t* callSiteTableStart = lsda;
+    const uint8_t* callSiteTableEnd = callSiteTableStart + callSiteTableLength;
+    const uint8_t* actionTableStart = callSiteTableEnd;
+    const uint8_t* callSitePtr = callSiteTableStart;
+    while (callSitePtr < callSiteTableEnd)
+    {
+        // There is one entry per call site.
+#ifndef __USING_SJLJ_EXCEPTIONS__
+        // The call sites are non-overlapping in [start, start+length)
+        // The call sites are ordered in increasing value of start
+        uintptr_t start = readEncodedPointer(&callSitePtr, callSiteEncoding);
+        uintptr_t length = readEncodedPointer(&callSitePtr, callSiteEncoding);
+        uintptr_t landingPad = readEncodedPointer(&callSitePtr, callSiteEncoding);
+        uintptr_t actionEntry = readULEB128(&callSitePtr);
+        if ((start <= ipOffset) && (ipOffset < (start + length)))
+#else  // __USING_SJLJ_EXCEPTIONS__
+        // ip is 1-based index into this table
+        uintptr_t landingPad = readULEB128(&callSitePtr);
+        uintptr_t actionEntry = readULEB128(&callSitePtr);
+        if (--ip == 0)
+#endif // __USING_SJLJ_EXCEPTIONS__
+        {
+            // Found the call site containing ip.
+#ifndef __USING_SJLJ_EXCEPTIONS__
+            if (landingPad == 0)
+            {
+                // No handler here
+                results.reason = _URC_CONTINUE_UNWIND;
+                return;
+            }
+            landingPad = (uintptr_t)lpStart + landingPad;
+#else  // __USING_SJLJ_EXCEPTIONS__
+            ++landingPad;
+#endif // __USING_SJLJ_EXCEPTIONS__
+            results.landingPad = landingPad;
+            if (actionEntry == 0)
+            {
+                // Found a cleanup
+                results.reason = actions & _UA_SEARCH_PHASE
+                                     ? _URC_CONTINUE_UNWIND
+                                     : _URC_HANDLER_FOUND;
+                return;
+            }
+            // Convert 1-based byte offset into
+            const uint8_t* action = actionTableStart + (actionEntry - 1);
+            bool hasCleanup = false;
+            // Scan action entries until you find a matching handler, cleanup, or the end of action list
+            while (true)
+            {
+                const uint8_t* actionRecord = action;
+                int64_t ttypeIndex = readSLEB128(&action);
+                if (ttypeIndex > 0)
+                {
+                    // Found a catch, does it actually catch?
+                    // First check for catch (...)
+                    const __shim_type_info* catchType =
+                        get_shim_type_info(static_cast<uint64_t>(ttypeIndex),
+                                           classInfo, ttypeEncoding,
+                                           native_exception, unwind_exception,
+                                           base);
+                    if (catchType == 0)
+                    {
+                        // Found catch (...) catches everything, including
+                        // foreign exceptions. This is search phase, cleanup
+                        // phase with foreign exception, or forced unwinding.
+                        assert(actions & (_UA_SEARCH_PHASE | _UA_HANDLER_FRAME |
+                                          _UA_FORCE_UNWIND));
+                        results.ttypeIndex = ttypeIndex;
+                        results.actionRecord = actionRecord;
+                        results.adjustedPtr =
+                            get_thrown_object_ptr(unwind_exception);
+                        results.reason = _URC_HANDLER_FOUND;
+                        return;
+                    }
+                    // Else this is a catch (T) clause and will never
+                    //    catch a foreign exception
+                    else if (native_exception)
+                    {
+                        __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
+                        void* adjustedPtr = get_thrown_object_ptr(unwind_exception);
+                        const __shim_type_info* excpType =
+                            static_cast<const __shim_type_info*>(exception_header->exceptionType);
+                        if (adjustedPtr == 0 || excpType == 0)
+                        {
+                            // Something very bad happened
+                            call_terminate(native_exception, unwind_exception);
+                        }
+                        if (catchType->can_catch(excpType, adjustedPtr))
+                        {
+                            // Found a matching handler. This is either search
+                            // phase or forced unwinding.
+                            assert(actions &
+                                   (_UA_SEARCH_PHASE | _UA_FORCE_UNWIND));
+                            results.ttypeIndex = ttypeIndex;
+                            results.actionRecord = actionRecord;
+                            results.adjustedPtr = adjustedPtr;
+                            results.reason = _URC_HANDLER_FOUND;
+                            return;
+                        }
+                    }
+                    // Scan next action ...
+                }
+                else if (ttypeIndex < 0)
+                {
+                    // Found an exception specification.
+                    if (actions & _UA_FORCE_UNWIND) {
+                        // Skip if forced unwinding.
+                    } else if (native_exception) {
+                        // Does the exception spec catch this native exception?
+                        __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
+                        void* adjustedPtr = get_thrown_object_ptr(unwind_exception);
+                        const __shim_type_info* excpType =
+                            static_cast<const __shim_type_info*>(exception_header->exceptionType);
+                        if (adjustedPtr == 0 || excpType == 0)
+                        {
+                            // Something very bad happened
+                            call_terminate(native_exception, unwind_exception);
+                        }
+                        if (exception_spec_can_catch(ttypeIndex, classInfo,
+                                                     ttypeEncoding, excpType,
+                                                     adjustedPtr,
+                                                     unwind_exception, base))
+                        {
+                            // Native exception caught by exception
+                            // specification.
+                            assert(actions & _UA_SEARCH_PHASE);
+                            results.ttypeIndex = ttypeIndex;
+                            results.actionRecord = actionRecord;
+                            results.adjustedPtr = adjustedPtr;
+                            results.reason = _URC_HANDLER_FOUND;
+                            return;
+                        }
+                    } else {
+                        // foreign exception caught by exception spec
+                        results.ttypeIndex = ttypeIndex;
+                        results.actionRecord = actionRecord;
+                        results.adjustedPtr =
+                            get_thrown_object_ptr(unwind_exception);
+                        results.reason = _URC_HANDLER_FOUND;
+                        return;
+                    }
+                    // Scan next action ...
+                } else {
+                    hasCleanup = true;
+                }
+                const uint8_t* temp = action;
+                int64_t actionOffset = readSLEB128(&temp);
+                if (actionOffset == 0)
+                {
+                    // End of action list. If this is phase 2 and we have found
+                    // a cleanup (ttypeIndex=0), return _URC_HANDLER_FOUND;
+                    // otherwise return _URC_CONTINUE_UNWIND.
+                    results.reason = hasCleanup && actions & _UA_CLEANUP_PHASE
+                                         ? _URC_HANDLER_FOUND
+                                         : _URC_CONTINUE_UNWIND;
+                    return;
+                }
+                // Go to next action
+                action += actionOffset;
+            }  // there is no break out of this loop, only return
+        }
+#ifndef __USING_SJLJ_EXCEPTIONS__
+        else if (ipOffset < start)
+        {
+            // There is no call site for this ip
+            // Something bad has happened.  We should never get here.
+            // Possible stack corruption.
+            call_terminate(native_exception, unwind_exception);
+        }
+#endif // !__USING_SJLJ_EXCEPTIONS__
+    }  // there might be some tricky cases which break out of this loop
+
+    // It is possible that no eh table entry specify how to handle
+    // this exception. By spec, terminate it immediately.
+    call_terminate(native_exception, unwind_exception);
+}
+
+// public API
+
+/*
+The personality function branches on actions like so:
+
+_UA_SEARCH_PHASE
+
+    If _UA_CLEANUP_PHASE or _UA_HANDLER_FRAME or _UA_FORCE_UNWIND there's
+      an error from above, return _URC_FATAL_PHASE1_ERROR.
+
+    Scan for anything that could stop unwinding:
+
+       1.  A catch clause that will catch this exception
+           (will never catch foreign).
+       2.  A catch (...) (will always catch foreign).
+       3.  An exception spec that will catch this exception
+           (will always catch foreign).
+    If a handler is found
+        If not foreign
+            Save state in header
+        return _URC_HANDLER_FOUND
+    Else a handler not found
+        return _URC_CONTINUE_UNWIND
+
+_UA_CLEANUP_PHASE
+
+    If _UA_HANDLER_FRAME
+        If _UA_FORCE_UNWIND
+            How did this happen?  return _URC_FATAL_PHASE2_ERROR
+        If foreign
+            Do _UA_SEARCH_PHASE to recover state
+        else
+            Recover state from header
+        Transfer control to landing pad.  return _URC_INSTALL_CONTEXT
+
+    Else
+
+        This branch handles both normal C++ non-catching handlers (cleanups)
+          and forced unwinding.
+        Scan for anything that can not stop unwinding:
+
+            1.  A cleanup.
+
+        If a cleanup is found
+            transfer control to it. return _URC_INSTALL_CONTEXT
+        Else a cleanup is not found: return _URC_CONTINUE_UNWIND
+*/
+
+#if !defined(_LIBCXXABI_ARM_EHABI)
+#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
+static _Unwind_Reason_Code __gxx_personality_imp
+#else
+_LIBCXXABI_FUNC_VIS _Unwind_Reason_Code
+#ifdef __USING_SJLJ_EXCEPTIONS__
+__gxx_personality_sj0
+#elif defined(__MVS__)
+__zos_cxx_personality_v2
+#else
+__gxx_personality_v0
+#endif
+#endif
+                    (int version, _Unwind_Action actions, uint64_t exceptionClass,
+                     _Unwind_Exception* unwind_exception, _Unwind_Context* context)
+{
+    if (version != 1 || unwind_exception == 0 || context == 0)
+        return _URC_FATAL_PHASE1_ERROR;
+
+    bool native_exception = (exceptionClass     & get_vendor_and_language) ==
+                            (kOurExceptionClass & get_vendor_and_language);
+    scan_results results;
+    // Process a catch handler for a native exception first.
+    if (actions == (_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME) &&
+        native_exception) {
+        // Reload the results from the phase 1 cache.
+        __cxa_exception* exception_header =
+            (__cxa_exception*)(unwind_exception + 1) - 1;
+        results.ttypeIndex = exception_header->handlerSwitchValue;
+        results.actionRecord = exception_header->actionRecord;
+        results.languageSpecificData = exception_header->languageSpecificData;
+        results.landingPad =
+            reinterpret_cast<uintptr_t>(exception_header->catchTemp);
+        results.adjustedPtr = exception_header->adjustedPtr;
+
+        // Jump to the handler.
+        set_registers(unwind_exception, context, results);
+        // Cache base for calculating the address of ttype in
+        // __cxa_call_unexpected.
+        if (results.ttypeIndex < 0) {
+#if defined(_AIX)
+          exception_header->catchTemp = (void *)_Unwind_GetDataRelBase(context);
+#else
+          exception_header->catchTemp = 0;
+#endif
+        }
+        return _URC_INSTALL_CONTEXT;
+    }
+
+    // In other cases we need to scan LSDA.
+    scan_eh_tab(results, actions, native_exception, unwind_exception, context);
+    if (results.reason == _URC_CONTINUE_UNWIND ||
+        results.reason == _URC_FATAL_PHASE1_ERROR)
+        return results.reason;
+
+    if (actions & _UA_SEARCH_PHASE)
+    {
+        // Phase 1 search:  All we're looking for in phase 1 is a handler that
+        //   halts unwinding
+        assert(results.reason == _URC_HANDLER_FOUND);
+        if (native_exception) {
+            // For a native exception, cache the LSDA result.
+            __cxa_exception* exc = (__cxa_exception*)(unwind_exception + 1) - 1;
+            exc->handlerSwitchValue = static_cast<int>(results.ttypeIndex);
+            exc->actionRecord = results.actionRecord;
+            exc->languageSpecificData = results.languageSpecificData;
+            exc->catchTemp = reinterpret_cast<void*>(results.landingPad);
+            exc->adjustedPtr = results.adjustedPtr;
+        }
+        return _URC_HANDLER_FOUND;
+    }
+
+    assert(actions & _UA_CLEANUP_PHASE);
+    assert(results.reason == _URC_HANDLER_FOUND);
+    set_registers(unwind_exception, context, results);
+    // Cache base for calculating the address of ttype in __cxa_call_unexpected.
+    if (results.ttypeIndex < 0) {
+      __cxa_exception* exception_header =
+            (__cxa_exception*)(unwind_exception + 1) - 1;
+#if defined(_AIX)
+      exception_header->catchTemp = (void *)_Unwind_GetDataRelBase(context);
+#else
+      exception_header->catchTemp = 0;
+#endif
+    }
+    return _URC_INSTALL_CONTEXT;
+}
+
+#if defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
+extern "C" _LIBCXXABI_FUNC_VIS EXCEPTION_DISPOSITION
+__gxx_personality_seh0(PEXCEPTION_RECORD ms_exc, void *this_frame,
+                       PCONTEXT ms_orig_context, PDISPATCHER_CONTEXT ms_disp)
+{
+  return _GCC_specific_handler(ms_exc, this_frame, ms_orig_context, ms_disp,
+                               __gxx_personality_imp);
+}
+#endif
+
+#else
+
+extern "C" _Unwind_Reason_Code __gnu_unwind_frame(_Unwind_Exception*,
+                                                  _Unwind_Context*);
+
+// Helper function to unwind one frame.
+// ARM EHABI 7.3 and 7.4: If the personality function returns _URC_CONTINUE_UNWIND, the
+// personality routine should update the virtual register set (VRS) according to the
+// corresponding frame unwinding instructions (ARM EHABI 9.3.)
+static _Unwind_Reason_Code continue_unwind(_Unwind_Exception* unwind_exception,
+                                           _Unwind_Context* context)
+{
+  switch (__gnu_unwind_frame(unwind_exception, context)) {
+  case _URC_OK:
+    return _URC_CONTINUE_UNWIND;
+  case _URC_END_OF_STACK:
+    return _URC_END_OF_STACK;
+  default:
+    return _URC_FAILURE;
+  }
+}
+
+// ARM register names
+#if !defined(_LIBUNWIND_VERSION)
+static const uint32_t REG_UCB = 12;  // Register to save _Unwind_Control_Block
+#endif
+static const uint32_t REG_SP = 13;
+
+static void save_results_to_barrier_cache(_Unwind_Exception* unwind_exception,
+                                          const scan_results& results)
+{
+    unwind_exception->barrier_cache.bitpattern[0] = (uint32_t)results.adjustedPtr;
+    unwind_exception->barrier_cache.bitpattern[1] = (uint32_t)results.actionRecord;
+    unwind_exception->barrier_cache.bitpattern[2] = (uint32_t)results.languageSpecificData;
+    unwind_exception->barrier_cache.bitpattern[3] = (uint32_t)results.landingPad;
+    unwind_exception->barrier_cache.bitpattern[4] = (uint32_t)results.ttypeIndex;
+}
+
+static void load_results_from_barrier_cache(scan_results& results,
+                                            const _Unwind_Exception* unwind_exception)
+{
+    results.adjustedPtr = (void*)unwind_exception->barrier_cache.bitpattern[0];
+    results.actionRecord = (const uint8_t*)unwind_exception->barrier_cache.bitpattern[1];
+    results.languageSpecificData = (const uint8_t*)unwind_exception->barrier_cache.bitpattern[2];
+    results.landingPad = (uintptr_t)unwind_exception->barrier_cache.bitpattern[3];
+    results.ttypeIndex = (int64_t)(int32_t)unwind_exception->barrier_cache.bitpattern[4];
+}
+
+extern "C" _LIBCXXABI_FUNC_VIS _Unwind_Reason_Code
+__gxx_personality_v0(_Unwind_State state,
+                     _Unwind_Exception* unwind_exception,
+                     _Unwind_Context* context)
+{
+    if (unwind_exception == 0 || context == 0)
+        return _URC_FATAL_PHASE1_ERROR;
+
+    bool native_exception = __isOurExceptionClass(unwind_exception);
+
+#if !defined(_LIBUNWIND_VERSION)
+    // Copy the address of _Unwind_Control_Block to r12 so that
+    // _Unwind_GetLanguageSpecificData() and _Unwind_GetRegionStart() can
+    // return correct address.
+    _Unwind_SetGR(context, REG_UCB, reinterpret_cast<uint32_t>(unwind_exception));
+#endif
+
+    // Check the undocumented force unwinding behavior
+    bool is_force_unwinding = state & _US_FORCE_UNWIND;
+    state &= ~_US_FORCE_UNWIND;
+
+    scan_results results;
+    switch (state) {
+    case _US_VIRTUAL_UNWIND_FRAME:
+        if (is_force_unwinding)
+            return continue_unwind(unwind_exception, context);
+
+        // Phase 1 search:  All we're looking for in phase 1 is a handler that halts unwinding
+        scan_eh_tab(results, _UA_SEARCH_PHASE, native_exception, unwind_exception, context);
+        if (results.reason == _URC_HANDLER_FOUND)
+        {
+            unwind_exception->barrier_cache.sp = _Unwind_GetGR(context, REG_SP);
+            if (native_exception)
+                save_results_to_barrier_cache(unwind_exception, results);
+            return _URC_HANDLER_FOUND;
+        }
+        // Did not find the catch handler
+        if (results.reason == _URC_CONTINUE_UNWIND)
+            return continue_unwind(unwind_exception, context);
+        return results.reason;
+
+    case _US_UNWIND_FRAME_STARTING:
+        // TODO: Support force unwinding in the phase 2 search.
+        // NOTE: In order to call the cleanup functions, _Unwind_ForcedUnwind()
+        // will call this personality function with (_US_FORCE_UNWIND |
+        // _US_UNWIND_FRAME_STARTING).
+
+        // Phase 2 search
+        if (unwind_exception->barrier_cache.sp == _Unwind_GetGR(context, REG_SP))
+        {
+            // Found a catching handler in phase 1
+            if (native_exception)
+            {
+                // Load the result from the native exception barrier cache.
+                load_results_from_barrier_cache(results, unwind_exception);
+                results.reason = _URC_HANDLER_FOUND;
+            }
+            else
+            {
+                // Search for the catching handler again for the foreign exception.
+                scan_eh_tab(results, static_cast<_Unwind_Action>(_UA_CLEANUP_PHASE | _UA_HANDLER_FRAME),
+                            native_exception, unwind_exception, context);
+                if (results.reason != _URC_HANDLER_FOUND)  // phase1 search should guarantee to find one
+                    call_terminate(native_exception, unwind_exception);
+            }
+
+            // Install the context for the catching handler
+            set_registers(unwind_exception, context, results);
+            return _URC_INSTALL_CONTEXT;
+        }
+
+        // Either we didn't do a phase 1 search (due to forced unwinding), or
+        // phase 1 reported no catching-handlers.
+        // Search for a (non-catching) cleanup
+        if (is_force_unwinding)
+          scan_eh_tab(
+              results,
+              static_cast<_Unwind_Action>(_UA_CLEANUP_PHASE | _UA_FORCE_UNWIND),
+              native_exception, unwind_exception, context);
+        else
+          scan_eh_tab(results, _UA_CLEANUP_PHASE, native_exception,
+                      unwind_exception, context);
+        if (results.reason == _URC_HANDLER_FOUND)
+        {
+            // Found a non-catching handler
+
+            // ARM EHABI 8.4.2: Before we can jump to the cleanup handler, we have to setup some
+            // internal data structures, so that __cxa_end_cleanup() can get unwind_exception from
+            // __cxa_get_globals().
+            __cxa_begin_cleanup(unwind_exception);
+
+            // Install the context for the cleanup handler
+            set_registers(unwind_exception, context, results);
+            return _URC_INSTALL_CONTEXT;
+        }
+
+        // Did not find any handler
+        if (results.reason == _URC_CONTINUE_UNWIND)
+            return continue_unwind(unwind_exception, context);
+        return results.reason;
+
+    case _US_UNWIND_FRAME_RESUME:
+        return continue_unwind(unwind_exception, context);
+    }
+
+    // We were called improperly: neither a phase 1 or phase 2 search
+    return _URC_FATAL_PHASE1_ERROR;
+}
+#endif
+
+
+__attribute__((noreturn))
+_LIBCXXABI_FUNC_VIS void
+__cxa_call_unexpected(void* arg)
+{
+    _Unwind_Exception* unwind_exception = static_cast<_Unwind_Exception*>(arg);
+    if (unwind_exception == 0)
+        call_terminate(false, unwind_exception);
+    __cxa_begin_catch(unwind_exception);
+    bool native_old_exception = __isOurExceptionClass(unwind_exception);
+    std::unexpected_handler u_handler;
+    std::terminate_handler t_handler;
+    __cxa_exception* old_exception_header = 0;
+    int64_t ttypeIndex;
+    const uint8_t* lsda;
+    uintptr_t base = 0;
+
+    if (native_old_exception)
+    {
+        old_exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
+        t_handler = old_exception_header->terminateHandler;
+        u_handler = old_exception_header->unexpectedHandler;
+        // If std::__unexpected(u_handler) rethrows the same exception,
+        //   these values get overwritten by the rethrow.  So save them now:
+#if defined(_LIBCXXABI_ARM_EHABI)
+        ttypeIndex = (int64_t)(int32_t)unwind_exception->barrier_cache.bitpattern[4];
+        lsda = (const uint8_t*)unwind_exception->barrier_cache.bitpattern[2];
+#else
+        ttypeIndex = old_exception_header->handlerSwitchValue;
+        lsda = old_exception_header->languageSpecificData;
+        base = (uintptr_t)old_exception_header->catchTemp;
+#endif
+    }
+    else
+    {
+        t_handler = std::get_terminate();
+        u_handler = std::get_unexpected();
+    }
+    try
+    {
+        std::__unexpected(u_handler);
+    }
+    catch (...)
+    {
+        // If the old exception is foreign, then all we can do is terminate.
+        //   We have no way to recover the needed old exception spec.  There's
+        //   no way to pass that information here.  And the personality routine
+        //   can't call us directly and do anything but terminate() if we throw
+        //   from here.
+        if (native_old_exception)
+        {
+            // Have:
+            //   old_exception_header->languageSpecificData
+            //   old_exception_header->actionRecord
+            //   old_exception_header->catchTemp, base for calculating ttype
+            // Need
+            //   const uint8_t* classInfo
+            //   uint8_t ttypeEncoding
+            uint8_t lpStartEncoding = *lsda++;
+            const uint8_t* lpStart =
+                (const uint8_t*)readEncodedPointer(&lsda, lpStartEncoding, base);
+            (void)lpStart;  // purposefully unused.  Just needed to increment lsda.
+            uint8_t ttypeEncoding = *lsda++;
+            if (ttypeEncoding == DW_EH_PE_omit)
+                std::__terminate(t_handler);
+            uintptr_t classInfoOffset = readULEB128(&lsda);
+            const uint8_t* classInfo = lsda + classInfoOffset;
+            // Is this new exception catchable by the exception spec at ttypeIndex?
+            // The answer is obviously yes if the new and old exceptions are the same exception
+            // If no
+            //    throw;
+            __cxa_eh_globals* globals = __cxa_get_globals_fast();
+            __cxa_exception* new_exception_header = globals->caughtExceptions;
+            if (new_exception_header == 0)
+                // This shouldn't be able to happen!
+                std::__terminate(t_handler);
+            bool native_new_exception = __isOurExceptionClass(&new_exception_header->unwindHeader);
+            void* adjustedPtr;
+            if (native_new_exception && (new_exception_header != old_exception_header))
+            {
+                const __shim_type_info* excpType =
+                    static_cast<const __shim_type_info*>(new_exception_header->exceptionType);
+                adjustedPtr =
+                    __getExceptionClass(&new_exception_header->unwindHeader) == kOurDependentExceptionClass ?
+                        ((__cxa_dependent_exception*)new_exception_header)->primaryException :
+                        new_exception_header + 1;
+                if (!exception_spec_can_catch(ttypeIndex, classInfo, ttypeEncoding,
+                                              excpType, adjustedPtr,
+                                              unwind_exception, base))
+                {
+                    // We need to __cxa_end_catch, but for the old exception,
+                    //   not the new one.  This is a little tricky ...
+                    // Disguise new_exception_header as a rethrown exception, but
+                    //   don't actually rethrow it.  This means you can temporarily
+                    //   end the catch clause enclosing new_exception_header without
+                    //   __cxa_end_catch destroying new_exception_header.
+                    new_exception_header->handlerCount = -new_exception_header->handlerCount;
+                    globals->uncaughtExceptions += 1;
+                    // Call __cxa_end_catch for new_exception_header
+                    __cxa_end_catch();
+                    // Call __cxa_end_catch for old_exception_header
+                    __cxa_end_catch();
+                    // Renter this catch clause with new_exception_header
+                    __cxa_begin_catch(&new_exception_header->unwindHeader);
+                    // Rethrow new_exception_header
+                    throw;
+                }
+            }
+            // Will a std::bad_exception be catchable by the exception spec at
+            //   ttypeIndex?
+            // If no
+            //    throw std::bad_exception();
+            const __shim_type_info* excpType =
+                static_cast<const __shim_type_info*>(&typeid(std::bad_exception));
+            std::bad_exception be;
+            adjustedPtr = &be;
+            if (!exception_spec_can_catch(ttypeIndex, classInfo, ttypeEncoding,
+                                          excpType, adjustedPtr,
+                                          unwind_exception, base))
+            {
+                // We need to __cxa_end_catch for both the old exception and the
+                //   new exception.  Technically we should do it in that order.
+                //   But it is expedient to do it in the opposite order:
+                // Call __cxa_end_catch for new_exception_header
+                __cxa_end_catch();
+                // Throw std::bad_exception will __cxa_end_catch for
+                //   old_exception_header
+                throw be;
+            }
+        }
+    }
+    std::__terminate(t_handler);
+}
+
+#if defined(_AIX)
+// Personality routine for EH using the range table. Make it an alias of
+// __gxx_personality_v0().
+_LIBCXXABI_FUNC_VIS _Unwind_Reason_Code __xlcxx_personality_v1(
+    int version, _Unwind_Action actions, uint64_t exceptionClass,
+    _Unwind_Exception* unwind_exception, _Unwind_Context* context)
+    __attribute__((__alias__("__gxx_personality_v0")));
+#endif
+
+}  // extern "C"
+
+}  // __cxxabiv1
+
+#if defined(_AIX)
+// Include implementation of the personality and helper functions for the
+// state table based EH used by IBM legacy compilers xlC and xlclang++ on AIX.
+#  include "aix_state_tab_eh.inc"
+#endif
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_thread_atexit.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_thread_atexit.cpp
new file mode 100644
index 0000000..665f9e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_thread_atexit.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "abort_message.h"
+#include "cxxabi.h"
+#include <__threading_support>
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+#if defined(__ELF__) && defined(_LIBCXXABI_LINK_PTHREAD_LIB)
+#pragma comment(lib, "pthread")
+#endif
+#endif
+
+#include <stdlib.h>
+
+namespace __cxxabiv1 {
+
+  using Dtor = void(*)(void*);
+
+  extern "C"
+#ifndef HAVE___CXA_THREAD_ATEXIT_IMPL
+  // A weak symbol is used to detect this function's presence in the C library
+  // at runtime, even if libc++ is built against an older libc
+  _LIBCXXABI_WEAK
+#endif
+  int __cxa_thread_atexit_impl(Dtor, void*, void*);
+
+#ifndef HAVE___CXA_THREAD_ATEXIT_IMPL
+
+namespace {
+  // This implementation is used if the C library does not provide
+  // __cxa_thread_atexit_impl() for us.  It has a number of limitations that are
+  // difficult to impossible to address without ..._impl():
+  //
+  // - dso_symbol is ignored.  This means that a shared library may be unloaded
+  //   (via dlclose()) before its thread_local destructors have run.
+  //
+  // - thread_local destructors for the main thread are run by the destructor of
+  //   a static object.  This is later than expected; they should run before the
+  //   destructors of any objects with static storage duration.
+  //
+  // - thread_local destructors on non-main threads run on the first iteration
+  //   through the __libccpp_tls_key destructors.
+  //   std::notify_all_at_thread_exit() and similar functions must be careful to
+  //   wait until the second iteration to provide their intended ordering
+  //   guarantees.
+  //
+  // Another limitation, though one shared with ..._impl(), is that any
+  // thread_locals that are first initialized after non-thread_local global
+  // destructors begin to run will not be destroyed.  [basic.start.term] states
+  // that all thread_local destructors are sequenced before the destruction of
+  // objects with static storage duration, resulting in a contradiction if a
+  // thread_local is constructed after that point.  Thus we consider such
+  // programs ill-formed, and don't bother to run those destructors.  (If the
+  // program terminates abnormally after such a thread_local is constructed,
+  // the destructor is not expected to run and thus there is no contradiction.
+  // So construction still has to work.)
+
+  struct DtorList {
+    Dtor dtor;
+    void* obj;
+    DtorList* next;
+  };
+
+  // The linked list of thread-local destructors to run
+  __thread DtorList* dtors = nullptr;
+  // True if the destructors are currently scheduled to run on this thread
+  __thread bool dtors_alive = false;
+  // Used to trigger destructors on thread exit; value is ignored
+  std::__libcpp_tls_key dtors_key;
+
+  void run_dtors(void*) {
+    while (auto head = dtors) {
+      dtors = head->next;
+      head->dtor(head->obj);
+      ::free(head);
+    }
+
+    dtors_alive = false;
+  }
+
+  struct DtorsManager {
+    DtorsManager() {
+      // There is intentionally no matching std::__libcpp_tls_delete call, as
+      // __cxa_thread_atexit() may be called arbitrarily late (for example, from
+      // global destructors or atexit() handlers).
+      if (std::__libcpp_tls_create(&dtors_key, run_dtors) != 0) {
+        abort_message("std::__libcpp_tls_create() failed in __cxa_thread_atexit()");
+      }
+    }
+
+    ~DtorsManager() {
+      // std::__libcpp_tls_key destructors do not run on threads that call exit()
+      // (including when the main thread returns from main()), so we explicitly
+      // call the destructor here.  This runs at exit time (potentially earlier
+      // if libc++abi is dlclose()'d).  Any thread_locals initialized after this
+      // point will not be destroyed.
+      run_dtors(nullptr);
+    }
+  };
+} // namespace
+
+#endif // HAVE___CXA_THREAD_ATEXIT_IMPL
+
+extern "C" {
+
+  _LIBCXXABI_FUNC_VIS int __cxa_thread_atexit(Dtor dtor, void* obj, void* dso_symbol) throw() {
+#ifdef HAVE___CXA_THREAD_ATEXIT_IMPL
+    return __cxa_thread_atexit_impl(dtor, obj, dso_symbol);
+#else
+    if (__cxa_thread_atexit_impl) {
+      return __cxa_thread_atexit_impl(dtor, obj, dso_symbol);
+    } else {
+      // Initialize the dtors std::__libcpp_tls_key (uses __cxa_guard_*() for
+      // one-time initialization and __cxa_atexit() for destruction)
+      static DtorsManager manager;
+
+      if (!dtors_alive) {
+        if (std::__libcpp_tls_set(dtors_key, &dtors_key) != 0) {
+          return -1;
+        }
+        dtors_alive = true;
+      }
+
+      auto head = static_cast<DtorList*>(::malloc(sizeof(DtorList)));
+      if (!head) {
+        return -1;
+      }
+
+      head->dtor = dtor;
+      head->obj = obj;
+      head->next = dtors;
+      dtors = head;
+
+      return 0;
+    }
+#endif // HAVE___CXA_THREAD_ATEXIT_IMPL
+  }
+
+} // extern "C"
+} // namespace __cxxabiv1
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_vector.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_vector.cpp
new file mode 100644
index 0000000..099f9f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_vector.cpp
@@ -0,0 +1,421 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+//  This file implements the "Array Construction and Destruction APIs"
+//  https://itanium-cxx-abi.github.io/cxx-abi/abi.html#array-ctor
+//
+//===----------------------------------------------------------------------===//
+
+#include "cxxabi.h"
+#include "__cxxabi_config.h"
+
+#include <exception>        // for std::terminate
+#include <new>              // for std::bad_array_new_length
+
+#include "abort_message.h"
+
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+namespace __cxxabiv1 {
+
+//
+// Helper routines and classes
+//
+
+namespace {
+    inline static size_t __get_element_count ( void *p ) {
+        return static_cast <size_t *> (p)[-1];
+        }
+
+    inline static void __set_element_count ( void *p, size_t element_count ) {
+        static_cast <size_t *> (p)[-1] = element_count;
+        }
+
+
+//  A pair of classes to simplify exception handling and control flow.
+//  They get passed a block of memory in the constructor, and unless the
+//  'release' method is called, they deallocate the memory in the destructor.
+//  Preferred usage is to allocate some memory, attach it to one of these objects,
+//  and then, when all the operations to set up the memory block have succeeded,
+//  call 'release'. If any of the setup operations fail, or an exception is
+//  thrown, then the block is automatically deallocated.
+//
+//  The only difference between these two classes is the signature for the
+//  deallocation function (to match new2/new3 and delete2/delete3.
+    class st_heap_block2 {
+    public:
+        typedef void (*dealloc_f)(void *);
+
+        st_heap_block2 ( dealloc_f dealloc, void *ptr )
+            : dealloc_ ( dealloc ), ptr_ ( ptr ), enabled_ ( true ) {}
+        ~st_heap_block2 () { if ( enabled_ ) dealloc_ ( ptr_ ) ; }
+        void release () { enabled_ = false; }
+
+    private:
+        dealloc_f dealloc_;
+        void *ptr_;
+        bool enabled_;
+    };
+
+    class st_heap_block3 {
+    public:
+        typedef void (*dealloc_f)(void *, size_t);
+
+        st_heap_block3 ( dealloc_f dealloc, void *ptr, size_t size )
+            : dealloc_ ( dealloc ), ptr_ ( ptr ), size_ ( size ), enabled_ ( true ) {}
+        ~st_heap_block3 () { if ( enabled_ ) dealloc_ ( ptr_, size_ ) ; }
+        void release () { enabled_ = false; }
+
+    private:
+        dealloc_f dealloc_;
+        void *ptr_;
+        size_t size_;
+        bool enabled_;
+    };
+
+    class st_cxa_cleanup {
+    public:
+        typedef void (*destruct_f)(void *);
+
+        st_cxa_cleanup ( void *ptr, size_t &idx, size_t element_size, destruct_f destructor )
+            : ptr_ ( ptr ), idx_ ( idx ), element_size_ ( element_size ),
+                destructor_ ( destructor ), enabled_ ( true ) {}
+        ~st_cxa_cleanup () {
+            if ( enabled_ )
+                __cxa_vec_cleanup ( ptr_, idx_, element_size_, destructor_ );
+            }
+
+        void release () { enabled_ = false; }
+
+    private:
+        void *ptr_;
+        size_t &idx_;
+        size_t element_size_;
+        destruct_f destructor_;
+        bool enabled_;
+    };
+
+    class st_terminate {
+    public:
+        st_terminate ( bool enabled = true ) : enabled_ ( enabled ) {}
+        ~st_terminate () { if ( enabled_ ) std::terminate (); }
+        void release () { enabled_ = false; }
+    private:
+        bool enabled_ ;
+    };
+}
+
+//
+// Externally visible routines
+//
+
+namespace {
+_LIBCXXABI_NORETURN
+void throw_bad_array_new_length() {
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+  throw std::bad_array_new_length();
+#else
+  abort_message("__cxa_vec_new failed to allocate memory");
+#endif
+}
+
+bool mul_overflow(size_t x, size_t y, size_t *res) {
+#if (defined(_LIBCXXABI_COMPILER_CLANG) && __has_builtin(__builtin_mul_overflow)) \
+    || defined(_LIBCXXABI_COMPILER_GCC)
+    return __builtin_mul_overflow(x, y, res);
+#else
+    *res = x * y;
+    return x && ((*res / x) != y);
+#endif
+}
+
+bool add_overflow(size_t x, size_t y, size_t *res) {
+#if (defined(_LIBCXXABI_COMPILER_CLANG) && __has_builtin(__builtin_add_overflow)) \
+    || defined(_LIBCXXABI_COMPILER_GCC)
+  return __builtin_add_overflow(x, y, res);
+#else
+  *res = x + y;
+  return *res < y;
+#endif
+}
+
+size_t calculate_allocation_size_or_throw(size_t element_count,
+                                          size_t element_size,
+                                          size_t padding_size) {
+  size_t element_heap_size;
+  if (mul_overflow(element_count, element_size, &element_heap_size))
+    throw_bad_array_new_length();
+
+  size_t allocation_size;
+  if (add_overflow(element_heap_size, padding_size, &allocation_size))
+    throw_bad_array_new_length();
+
+  return allocation_size;
+}
+
+} // namespace
+
+extern "C" {
+
+// Equivalent to
+//
+//   __cxa_vec_new2(element_count, element_size, padding_size, constructor,
+//                  destructor, &::operator new[], &::operator delete[])
+_LIBCXXABI_FUNC_VIS void *
+__cxa_vec_new(size_t element_count, size_t element_size, size_t padding_size,
+              void (*constructor)(void *), void (*destructor)(void *)) {
+    return __cxa_vec_new2 ( element_count, element_size, padding_size,
+        constructor, destructor, &::operator new [], &::operator delete [] );
+}
+
+
+// Given the number and size of elements for an array and the non-negative
+// size of prefix padding for a cookie, allocate space (using alloc) for
+// the array preceded by the specified padding, initialize the cookie if
+// the padding is non-zero, and call the given constructor on each element.
+// Return the address of the array proper, after the padding.
+//
+// If alloc throws an exception, rethrow the exception. If alloc returns
+// NULL, return NULL. If the constructor throws an exception, call
+// destructor for any already constructed elements, and rethrow the
+// exception. If the destructor throws an exception, call std::terminate.
+//
+// The constructor may be NULL, in which case it must not be called. If the
+// padding_size is zero, the destructor may be NULL; in that case it must
+// not be called.
+//
+// Neither alloc nor dealloc may be NULL.
+_LIBCXXABI_FUNC_VIS void *
+__cxa_vec_new2(size_t element_count, size_t element_size, size_t padding_size,
+               void (*constructor)(void *), void (*destructor)(void *),
+               void *(*alloc)(size_t), void (*dealloc)(void *)) {
+  const size_t heap_size = calculate_allocation_size_or_throw(
+      element_count, element_size, padding_size);
+  char* const heap_block = static_cast<char*>(alloc(heap_size));
+  char* vec_base = heap_block;
+
+  if (NULL != vec_base) {
+    st_heap_block2 heap(dealloc, heap_block);
+
+    //  put the padding before the array elements
+        if ( 0 != padding_size ) {
+            vec_base += padding_size;
+            __set_element_count ( vec_base, element_count );
+        }
+
+    //  Construct the elements
+        __cxa_vec_ctor ( vec_base, element_count, element_size, constructor, destructor );
+        heap.release ();    // We're good!
+    }
+
+    return vec_base;
+}
+
+
+// Same as __cxa_vec_new2 except that the deallocation function takes both
+// the object address and its size.
+_LIBCXXABI_FUNC_VIS void *
+__cxa_vec_new3(size_t element_count, size_t element_size, size_t padding_size,
+               void (*constructor)(void *), void (*destructor)(void *),
+               void *(*alloc)(size_t), void (*dealloc)(void *, size_t)) {
+  const size_t heap_size = calculate_allocation_size_or_throw(
+      element_count, element_size, padding_size);
+  char* const heap_block = static_cast<char*>(alloc(heap_size));
+  char* vec_base = heap_block;
+
+  if (NULL != vec_base) {
+    st_heap_block3 heap(dealloc, heap_block, heap_size);
+
+    //  put the padding before the array elements
+        if ( 0 != padding_size ) {
+            vec_base += padding_size;
+            __set_element_count ( vec_base, element_count );
+        }
+
+    //  Construct the elements
+        __cxa_vec_ctor ( vec_base, element_count, element_size, constructor, destructor );
+        heap.release ();    // We're good!
+    }
+
+    return vec_base;
+}
+
+
+// Given the (data) addresses of a destination and a source array, an
+// element count and an element size, call the given copy constructor to
+// copy each element from the source array to the destination array. The
+// copy constructor's arguments are the destination address and source
+// address, respectively. If an exception occurs, call the given destructor
+// (if non-NULL) on each copied element and rethrow. If the destructor
+// throws an exception, call terminate(). The constructor and or destructor
+// pointers may be NULL. If either is NULL, no action is taken when it
+// would have been called.
+
+_LIBCXXABI_FUNC_VIS void __cxa_vec_cctor(void *dest_array, void *src_array,
+                                         size_t element_count,
+                                         size_t element_size,
+                                         void (*constructor)(void *, void *),
+                                         void (*destructor)(void *)) {
+    if ( NULL != constructor ) {
+        size_t idx = 0;
+        char *src_ptr  = static_cast<char *>(src_array);
+        char *dest_ptr = static_cast<char *>(dest_array);
+        st_cxa_cleanup cleanup ( dest_array, idx, element_size, destructor );
+
+        for ( idx = 0; idx < element_count;
+                    ++idx, src_ptr += element_size, dest_ptr += element_size )
+            constructor ( dest_ptr, src_ptr );
+        cleanup.release ();     // We're good!
+    }
+}
+
+
+// Given the (data) address of an array, not including any cookie padding,
+// and the number and size of its elements, call the given constructor on
+// each element. If the constructor throws an exception, call the given
+// destructor for any already-constructed elements, and rethrow the
+// exception. If the destructor throws an exception, call terminate(). The
+// constructor and/or destructor pointers may be NULL. If either is NULL,
+// no action is taken when it would have been called.
+_LIBCXXABI_FUNC_VIS void
+__cxa_vec_ctor(void *array_address, size_t element_count, size_t element_size,
+               void (*constructor)(void *), void (*destructor)(void *)) {
+    if ( NULL != constructor ) {
+        size_t idx;
+        char *ptr = static_cast <char *> ( array_address );
+        st_cxa_cleanup cleanup ( array_address, idx, element_size, destructor );
+
+    //  Construct the elements
+        for ( idx = 0; idx < element_count; ++idx, ptr += element_size )
+            constructor ( ptr );
+        cleanup.release ();     // We're good!
+    }
+}
+
+// Given the (data) address of an array, the number of elements, and the
+// size of its elements, call the given destructor on each element. If the
+// destructor throws an exception, rethrow after destroying the remaining
+// elements if possible. If the destructor throws a second exception, call
+// terminate(). The destructor pointer may be NULL, in which case this
+// routine does nothing.
+_LIBCXXABI_FUNC_VIS void __cxa_vec_dtor(void *array_address,
+                                        size_t element_count,
+                                        size_t element_size,
+                                        void (*destructor)(void *)) {
+    if ( NULL != destructor ) {
+        char *ptr = static_cast <char *> (array_address);
+        size_t idx = element_count;
+        st_cxa_cleanup cleanup ( array_address, idx, element_size, destructor );
+        {
+            st_terminate exception_guard (__cxa_uncaught_exception ());
+            ptr +=  element_count * element_size;   // one past the last element
+
+            while ( idx-- > 0 ) {
+                ptr -= element_size;
+                destructor ( ptr );
+            }
+            exception_guard.release (); //  We're good !
+        }
+        cleanup.release ();     // We're still good!
+    }
+}
+
+// Given the (data) address of an array, the number of elements, and the
+// size of its elements, call the given destructor on each element. If the
+// destructor throws an exception, call terminate(). The destructor pointer
+// may be NULL, in which case this routine does nothing.
+_LIBCXXABI_FUNC_VIS void __cxa_vec_cleanup(void *array_address,
+                                           size_t element_count,
+                                           size_t element_size,
+                                           void (*destructor)(void *)) {
+    if ( NULL != destructor ) {
+        char *ptr = static_cast <char *> (array_address);
+        size_t idx = element_count;
+        st_terminate exception_guard;
+
+        ptr += element_count * element_size;    // one past the last element
+        while ( idx-- > 0 ) {
+            ptr -= element_size;
+            destructor ( ptr );
+            }
+        exception_guard.release ();     // We're done!
+    }
+}
+
+
+// If the array_address is NULL, return immediately. Otherwise, given the
+// (data) address of an array, the non-negative size of prefix padding for
+// the cookie, and the size of its elements, call the given destructor on
+// each element, using the cookie to determine the number of elements, and
+// then delete the space by calling ::operator delete[](void *). If the
+// destructor throws an exception, rethrow after (a) destroying the
+// remaining elements, and (b) deallocating the storage. If the destructor
+// throws a second exception, call terminate(). If padding_size is 0, the
+// destructor pointer must be NULL. If the destructor pointer is NULL, no
+// destructor call is to be made.
+//
+// The intent of this function is to permit an implementation to call this
+// function when confronted with an expression of the form delete[] p in
+// the source code, provided that the default deallocation function can be
+// used. Therefore, the semantics of this function are consistent with
+// those required by the standard. The requirement that the deallocation
+// function be called even if the destructor throws an exception derives
+// from the resolution to DR 353 to the C++ standard, which was adopted in
+// April, 2003.
+_LIBCXXABI_FUNC_VIS void __cxa_vec_delete(void *array_address,
+                                          size_t element_size,
+                                          size_t padding_size,
+                                          void (*destructor)(void *)) {
+    __cxa_vec_delete2 ( array_address, element_size, padding_size,
+               destructor, &::operator delete [] );
+}
+
+// Same as __cxa_vec_delete, except that the given function is used for
+// deallocation instead of the default delete function. If dealloc throws
+// an exception, the result is undefined. The dealloc pointer may not be
+// NULL.
+_LIBCXXABI_FUNC_VIS void
+__cxa_vec_delete2(void *array_address, size_t element_size, size_t padding_size,
+                  void (*destructor)(void *), void (*dealloc)(void *)) {
+    if ( NULL != array_address ) {
+        char *vec_base   = static_cast <char *> (array_address);
+        char *heap_block = vec_base - padding_size;
+        st_heap_block2 heap ( dealloc, heap_block );
+
+        if ( 0 != padding_size && NULL != destructor ) // call the destructors
+            __cxa_vec_dtor ( array_address, __get_element_count ( vec_base ),
+                                    element_size, destructor );
+    }
+}
+
+
+// Same as __cxa_vec_delete, except that the given function is used for
+// deallocation instead of the default delete function. The deallocation
+// function takes both the object address and its size. If dealloc throws
+// an exception, the result is undefined. The dealloc pointer may not be
+// NULL.
+_LIBCXXABI_FUNC_VIS void
+__cxa_vec_delete3(void *array_address, size_t element_size, size_t padding_size,
+                  void (*destructor)(void *), void (*dealloc)(void *, size_t)) {
+    if ( NULL != array_address ) {
+        char *vec_base   = static_cast <char *> (array_address);
+        char *heap_block = vec_base - padding_size;
+        const size_t element_count = padding_size ? __get_element_count ( vec_base ) : 0;
+        const size_t heap_block_size = element_size * element_count + padding_size;
+        st_heap_block3 heap ( dealloc, heap_block, heap_block_size );
+
+        if ( 0 != padding_size && NULL != destructor ) // call the destructors
+            __cxa_vec_dtor ( array_address, element_count, element_size, destructor );
+    }
+}
+
+
+}  // extern "C"
+
+}  // abi
diff --git a/app/src/main/cpp/libcxx/src/abi/cxa_virtual.cpp b/app/src/main/cpp/libcxx/src/abi/cxa_virtual.cpp
new file mode 100644
index 0000000..c868672
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/cxa_virtual.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "cxxabi.h"
+#include "abort_message.h"
+
+namespace __cxxabiv1 {
+extern "C" {
+_LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN
+void __cxa_pure_virtual(void) {
+  abort_message("Pure virtual function called!");
+}
+
+_LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN
+void __cxa_deleted_virtual(void) {
+  abort_message("Deleted virtual function called!");
+}
+} // extern "C"
+} // abi
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/.clang-format b/app/src/main/cpp/libcxx/src/abi/demangle/.clang-format
new file mode 100644
index 0000000..5bead5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/.clang-format
@@ -0,0 +1,2 @@
+BasedOnStyle: LLVM
+
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/DemangleConfig.h b/app/src/main/cpp/libcxx/src/abi/demangle/DemangleConfig.h
new file mode 100644
index 0000000..9d81853
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/DemangleConfig.h
@@ -0,0 +1,97 @@
+//===--- DemangleConfig.h --------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+// This file is contains a subset of macros copied from
+// llvm/include/llvm/Demangle/DemangleConfig.h
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXXABI_DEMANGLE_DEMANGLE_CONFIG_H
+#define LIBCXXABI_DEMANGLE_DEMANGLE_CONFIG_H
+
+#include <ciso646>
+
+#ifdef _MSC_VER
+// snprintf is implemented in VS 2015
+#if _MSC_VER < 1900
+#define snprintf _snprintf_s
+#endif
+#endif
+
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+
+#ifndef __has_cpp_attribute
+#define __has_cpp_attribute(x) 0
+#endif
+
+#ifndef __has_attribute
+#define __has_attribute(x) 0
+#endif
+
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
+#ifndef DEMANGLE_GNUC_PREREQ
+#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
+#define DEMANGLE_GNUC_PREREQ(maj, min, patch)                           \
+  ((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) + __GNUC_PATCHLEVEL__ >=          \
+   ((maj) << 20) + ((min) << 10) + (patch))
+#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
+#define DEMANGLE_GNUC_PREREQ(maj, min, patch)                           \
+  ((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) >= ((maj) << 20) + ((min) << 10))
+#else
+#define DEMANGLE_GNUC_PREREQ(maj, min, patch) 0
+#endif
+#endif
+
+#if __has_attribute(used) || DEMANGLE_GNUC_PREREQ(3, 1, 0)
+#define DEMANGLE_ATTRIBUTE_USED __attribute__((__used__))
+#else
+#define DEMANGLE_ATTRIBUTE_USED
+#endif
+
+#if __has_builtin(__builtin_unreachable) || DEMANGLE_GNUC_PREREQ(4, 5, 0)
+#define DEMANGLE_UNREACHABLE __builtin_unreachable()
+#elif defined(_MSC_VER)
+#define DEMANGLE_UNREACHABLE __assume(false)
+#else
+#define DEMANGLE_UNREACHABLE
+#endif
+
+#if __has_attribute(noinline) || DEMANGLE_GNUC_PREREQ(3, 4, 0)
+#define DEMANGLE_ATTRIBUTE_NOINLINE __attribute__((noinline))
+#elif defined(_MSC_VER)
+#define DEMANGLE_ATTRIBUTE_NOINLINE __declspec(noinline)
+#else
+#define DEMANGLE_ATTRIBUTE_NOINLINE
+#endif
+
+#if !defined(NDEBUG)
+#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE DEMANGLE_ATTRIBUTE_USED
+#else
+#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE
+#endif
+
+#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough)
+#define DEMANGLE_FALLTHROUGH [[fallthrough]]
+#elif __has_cpp_attribute(gnu::fallthrough)
+#define DEMANGLE_FALLTHROUGH [[gnu::fallthrough]]
+#elif !__cplusplus
+// Workaround for llvm.org/PR23435, since clang 3.6 and below emit a spurious
+// error when __has_cpp_attribute is given a scoped attribute in C mode.
+#define DEMANGLE_FALLTHROUGH
+#elif __has_cpp_attribute(clang::fallthrough)
+#define DEMANGLE_FALLTHROUGH [[clang::fallthrough]]
+#else
+#define DEMANGLE_FALLTHROUGH
+#endif
+
+#define DEMANGLE_NAMESPACE_BEGIN namespace { namespace itanium_demangle {
+#define DEMANGLE_NAMESPACE_END } }
+
+#endif // LIBCXXABI_DEMANGLE_DEMANGLE_CONFIG_H
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/ItaniumDemangle.h b/app/src/main/cpp/libcxx/src/abi/demangle/ItaniumDemangle.h
new file mode 100644
index 0000000..66213c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/ItaniumDemangle.h
@@ -0,0 +1,5500 @@
+//===------------------------- ItaniumDemangle.h ----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Generic itanium demangler library.
+// There are two copies of this file in the source tree.  The one under
+// libcxxabi is the original and the one under llvm is the copy.  Use
+// cp-to-llvm.sh to update the copy.  See README.txt for more details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef DEMANGLE_ITANIUMDEMANGLE_H
+#define DEMANGLE_ITANIUMDEMANGLE_H
+
+#include "DemangleConfig.h"
+#include "StringView.h"
+#include "Utility.h"
+#include <algorithm>
+#include <cassert>
+#include <cctype>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <limits>
+#include <new>
+#include <utility>
+
+DEMANGLE_NAMESPACE_BEGIN
+
+template <class T, size_t N> class PODSmallVector {
+  static_assert(std::is_pod<T>::value,
+                "T is required to be a plain old data type");
+
+  T *First = nullptr;
+  T *Last = nullptr;
+  T *Cap = nullptr;
+  T Inline[N] = {0};
+
+  bool isInline() const { return First == Inline; }
+
+  void clearInline() {
+    First = Inline;
+    Last = Inline;
+    Cap = Inline + N;
+  }
+
+  void reserve(size_t NewCap) {
+    size_t S = size();
+    if (isInline()) {
+      auto *Tmp = static_cast<T *>(std::malloc(NewCap * sizeof(T)));
+      if (Tmp == nullptr)
+        std::terminate();
+      std::copy(First, Last, Tmp);
+      First = Tmp;
+    } else {
+      First = static_cast<T *>(std::realloc(First, NewCap * sizeof(T)));
+      if (First == nullptr)
+        std::terminate();
+    }
+    Last = First + S;
+    Cap = First + NewCap;
+  }
+
+public:
+  PODSmallVector() : First(Inline), Last(First), Cap(Inline + N) {}
+
+  PODSmallVector(const PODSmallVector &) = delete;
+  PODSmallVector &operator=(const PODSmallVector &) = delete;
+
+  PODSmallVector(PODSmallVector &&Other) : PODSmallVector() {
+    if (Other.isInline()) {
+      std::copy(Other.begin(), Other.end(), First);
+      Last = First + Other.size();
+      Other.clear();
+      return;
+    }
+
+    First = Other.First;
+    Last = Other.Last;
+    Cap = Other.Cap;
+    Other.clearInline();
+  }
+
+  PODSmallVector &operator=(PODSmallVector &&Other) {
+    if (Other.isInline()) {
+      if (!isInline()) {
+        std::free(First);
+        clearInline();
+      }
+      std::copy(Other.begin(), Other.end(), First);
+      Last = First + Other.size();
+      Other.clear();
+      return *this;
+    }
+
+    if (isInline()) {
+      First = Other.First;
+      Last = Other.Last;
+      Cap = Other.Cap;
+      Other.clearInline();
+      return *this;
+    }
+
+    std::swap(First, Other.First);
+    std::swap(Last, Other.Last);
+    std::swap(Cap, Other.Cap);
+    Other.clear();
+    return *this;
+  }
+
+  // NOLINTNEXTLINE(readability-identifier-naming)
+  void push_back(const T &Elem) {
+    if (Last == Cap)
+      reserve(size() * 2);
+    *Last++ = Elem;
+  }
+
+  // NOLINTNEXTLINE(readability-identifier-naming)
+  void pop_back() {
+    assert(Last != First && "Popping empty vector!");
+    --Last;
+  }
+
+  void dropBack(size_t Index) {
+    assert(Index <= size() && "dropBack() can't expand!");
+    Last = First + Index;
+  }
+
+  T *begin() { return First; }
+  T *end() { return Last; }
+
+  bool empty() const { return First == Last; }
+  size_t size() const { return static_cast<size_t>(Last - First); }
+  T &back() {
+    assert(Last != First && "Calling back() on empty vector!");
+    return *(Last - 1);
+  }
+  T &operator[](size_t Index) {
+    assert(Index < size() && "Invalid access!");
+    return *(begin() + Index);
+  }
+  void clear() { Last = First; }
+
+  ~PODSmallVector() {
+    if (!isInline())
+      std::free(First);
+  }
+};
+
+// Base class of all AST nodes. The AST is built by the parser, then is
+// traversed by the printLeft/Right functions to produce a demangled string.
+class Node {
+public:
+  enum Kind : unsigned char {
+#define NODE(NodeKind) K##NodeKind,
+#include "ItaniumNodes.def"
+  };
+
+  /// Three-way bool to track a cached value. Unknown is possible if this node
+  /// has an unexpanded parameter pack below it that may affect this cache.
+  enum class Cache : unsigned char { Yes, No, Unknown, };
+
+  /// Operator precedence for expression nodes. Used to determine required
+  /// parens in expression emission.
+  enum class Prec {
+    Primary,
+    Postfix,
+    Unary,
+    Cast,
+    PtrMem,
+    Multiplicative,
+    Additive,
+    Shift,
+    Spaceship,
+    Relational,
+    Equality,
+    And,
+    Xor,
+    Ior,
+    AndIf,
+    OrIf,
+    Conditional,
+    Assign,
+    Comma,
+    Default,
+  };
+
+private:
+  Kind K;
+
+  Prec Precedence : 6;
+
+  // FIXME: Make these protected.
+public:
+  /// Tracks if this node has a component on its right side, in which case we
+  /// need to call printRight.
+  Cache RHSComponentCache : 2;
+
+  /// Track if this node is a (possibly qualified) array type. This can affect
+  /// how we format the output string.
+  Cache ArrayCache : 2;
+
+  /// Track if this node is a (possibly qualified) function type. This can
+  /// affect how we format the output string.
+  Cache FunctionCache : 2;
+
+public:
+  Node(Kind K_, Prec Precedence_ = Prec::Primary,
+       Cache RHSComponentCache_ = Cache::No, Cache ArrayCache_ = Cache::No,
+       Cache FunctionCache_ = Cache::No)
+      : K(K_), Precedence(Precedence_), RHSComponentCache(RHSComponentCache_),
+        ArrayCache(ArrayCache_), FunctionCache(FunctionCache_) {}
+  Node(Kind K_, Cache RHSComponentCache_, Cache ArrayCache_ = Cache::No,
+       Cache FunctionCache_ = Cache::No)
+      : Node(K_, Prec::Primary, RHSComponentCache_, ArrayCache_,
+             FunctionCache_) {}
+
+  /// Visit the most-derived object corresponding to this object.
+  template<typename Fn> void visit(Fn F) const;
+
+  // The following function is provided by all derived classes:
+  //
+  // Call F with arguments that, when passed to the constructor of this node,
+  // would construct an equivalent node.
+  //template<typename Fn> void match(Fn F) const;
+
+  bool hasRHSComponent(OutputBuffer &OB) const {
+    if (RHSComponentCache != Cache::Unknown)
+      return RHSComponentCache == Cache::Yes;
+    return hasRHSComponentSlow(OB);
+  }
+
+  bool hasArray(OutputBuffer &OB) const {
+    if (ArrayCache != Cache::Unknown)
+      return ArrayCache == Cache::Yes;
+    return hasArraySlow(OB);
+  }
+
+  bool hasFunction(OutputBuffer &OB) const {
+    if (FunctionCache != Cache::Unknown)
+      return FunctionCache == Cache::Yes;
+    return hasFunctionSlow(OB);
+  }
+
+  Kind getKind() const { return K; }
+
+  Prec getPrecedence() const { return Precedence; }
+
+  virtual bool hasRHSComponentSlow(OutputBuffer &) const { return false; }
+  virtual bool hasArraySlow(OutputBuffer &) const { return false; }
+  virtual bool hasFunctionSlow(OutputBuffer &) const { return false; }
+
+  // Dig through "glue" nodes like ParameterPack and ForwardTemplateReference to
+  // get at a node that actually represents some concrete syntax.
+  virtual const Node *getSyntaxNode(OutputBuffer &) const { return this; }
+
+  // Print this node as an expression operand, surrounding it in parentheses if
+  // its precedence is [Strictly] weaker than P.
+  void printAsOperand(OutputBuffer &OB, Prec P = Prec::Default,
+                      bool StrictlyWorse = false) const {
+    bool Paren =
+        unsigned(getPrecedence()) >= unsigned(P) + unsigned(StrictlyWorse);
+    if (Paren)
+      OB.printOpen();
+    print(OB);
+    if (Paren)
+      OB.printClose();
+  }
+
+  void print(OutputBuffer &OB) const {
+    printLeft(OB);
+    if (RHSComponentCache != Cache::No)
+      printRight(OB);
+  }
+
+  // Print the "left" side of this Node into OutputBuffer.
+  virtual void printLeft(OutputBuffer &) const = 0;
+
+  // Print the "right". This distinction is necessary to represent C++ types
+  // that appear on the RHS of their subtype, such as arrays or functions.
+  // Since most types don't have such a component, provide a default
+  // implementation.
+  virtual void printRight(OutputBuffer &) const {}
+
+  virtual StringView getBaseName() const { return StringView(); }
+
+  // Silence compiler warnings, this dtor will never be called.
+  virtual ~Node() = default;
+
+#ifndef NDEBUG
+  DEMANGLE_DUMP_METHOD void dump() const;
+#endif
+};
+
+class NodeArray {
+  Node **Elements;
+  size_t NumElements;
+
+public:
+  NodeArray() : Elements(nullptr), NumElements(0) {}
+  NodeArray(Node **Elements_, size_t NumElements_)
+      : Elements(Elements_), NumElements(NumElements_) {}
+
+  bool empty() const { return NumElements == 0; }
+  size_t size() const { return NumElements; }
+
+  Node **begin() const { return Elements; }
+  Node **end() const { return Elements + NumElements; }
+
+  Node *operator[](size_t Idx) const { return Elements[Idx]; }
+
+  void printWithComma(OutputBuffer &OB) const {
+    bool FirstElement = true;
+    for (size_t Idx = 0; Idx != NumElements; ++Idx) {
+      size_t BeforeComma = OB.getCurrentPosition();
+      if (!FirstElement)
+        OB += ", ";
+      size_t AfterComma = OB.getCurrentPosition();
+      Elements[Idx]->printAsOperand(OB, Node::Prec::Comma);
+
+      // Elements[Idx] is an empty parameter pack expansion, we should erase the
+      // comma we just printed.
+      if (AfterComma == OB.getCurrentPosition()) {
+        OB.setCurrentPosition(BeforeComma);
+        continue;
+      }
+
+      FirstElement = false;
+    }
+  }
+};
+
+struct NodeArrayNode : Node {
+  NodeArray Array;
+  NodeArrayNode(NodeArray Array_) : Node(KNodeArrayNode), Array(Array_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Array); }
+
+  void printLeft(OutputBuffer &OB) const override { Array.printWithComma(OB); }
+};
+
+class DotSuffix final : public Node {
+  const Node *Prefix;
+  const StringView Suffix;
+
+public:
+  DotSuffix(const Node *Prefix_, StringView Suffix_)
+      : Node(KDotSuffix), Prefix(Prefix_), Suffix(Suffix_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Prefix, Suffix); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Prefix->print(OB);
+    OB += " (";
+    OB += Suffix;
+    OB += ")";
+  }
+};
+
+class VendorExtQualType final : public Node {
+  const Node *Ty;
+  StringView Ext;
+  const Node *TA;
+
+public:
+  VendorExtQualType(const Node *Ty_, StringView Ext_, const Node *TA_)
+      : Node(KVendorExtQualType), Ty(Ty_), Ext(Ext_), TA(TA_) {}
+
+  const Node *getTy() const { return Ty; }
+  StringView getExt() const { return Ext; }
+  const Node *getTA() const { return TA; }
+
+  template <typename Fn> void match(Fn F) const { F(Ty, Ext, TA); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Ty->print(OB);
+    OB += " ";
+    OB += Ext;
+    if (TA != nullptr)
+      TA->print(OB);
+  }
+};
+
+enum FunctionRefQual : unsigned char {
+  FrefQualNone,
+  FrefQualLValue,
+  FrefQualRValue,
+};
+
+enum Qualifiers {
+  QualNone = 0,
+  QualConst = 0x1,
+  QualVolatile = 0x2,
+  QualRestrict = 0x4,
+};
+
+inline Qualifiers operator|=(Qualifiers &Q1, Qualifiers Q2) {
+  return Q1 = static_cast<Qualifiers>(Q1 | Q2);
+}
+
+class QualType final : public Node {
+protected:
+  const Qualifiers Quals;
+  const Node *Child;
+
+  void printQuals(OutputBuffer &OB) const {
+    if (Quals & QualConst)
+      OB += " const";
+    if (Quals & QualVolatile)
+      OB += " volatile";
+    if (Quals & QualRestrict)
+      OB += " restrict";
+  }
+
+public:
+  QualType(const Node *Child_, Qualifiers Quals_)
+      : Node(KQualType, Child_->RHSComponentCache,
+             Child_->ArrayCache, Child_->FunctionCache),
+        Quals(Quals_), Child(Child_) {}
+
+  Qualifiers getQuals() const { return Quals; }
+  const Node *getChild() const { return Child; }
+
+  template<typename Fn> void match(Fn F) const { F(Child, Quals); }
+
+  bool hasRHSComponentSlow(OutputBuffer &OB) const override {
+    return Child->hasRHSComponent(OB);
+  }
+  bool hasArraySlow(OutputBuffer &OB) const override {
+    return Child->hasArray(OB);
+  }
+  bool hasFunctionSlow(OutputBuffer &OB) const override {
+    return Child->hasFunction(OB);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Child->printLeft(OB);
+    printQuals(OB);
+  }
+
+  void printRight(OutputBuffer &OB) const override { Child->printRight(OB); }
+};
+
+class ConversionOperatorType final : public Node {
+  const Node *Ty;
+
+public:
+  ConversionOperatorType(const Node *Ty_)
+      : Node(KConversionOperatorType), Ty(Ty_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Ty); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "operator ";
+    Ty->print(OB);
+  }
+};
+
+class PostfixQualifiedType final : public Node {
+  const Node *Ty;
+  const StringView Postfix;
+
+public:
+  PostfixQualifiedType(const Node *Ty_, StringView Postfix_)
+      : Node(KPostfixQualifiedType), Ty(Ty_), Postfix(Postfix_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Ty, Postfix); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Ty->printLeft(OB);
+    OB += Postfix;
+  }
+};
+
+class NameType final : public Node {
+  const StringView Name;
+
+public:
+  NameType(StringView Name_) : Node(KNameType), Name(Name_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Name); }
+
+  StringView getName() const { return Name; }
+  StringView getBaseName() const override { return Name; }
+
+  void printLeft(OutputBuffer &OB) const override { OB += Name; }
+};
+
+class BitIntType final : public Node {
+  const Node *Size;
+  bool Signed;
+
+public:
+  BitIntType(const Node *Size_, bool Signed_)
+      : Node(KBitIntType), Size(Size_), Signed(Signed_) {}
+
+  template <typename Fn> void match(Fn F) const { F(Size, Signed); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (!Signed)
+      OB += "unsigned ";
+    OB += "_BitInt";
+    OB.printOpen();
+    Size->printAsOperand(OB);
+    OB.printClose();
+  }
+};
+
+class ElaboratedTypeSpefType : public Node {
+  StringView Kind;
+  Node *Child;
+public:
+  ElaboratedTypeSpefType(StringView Kind_, Node *Child_)
+      : Node(KElaboratedTypeSpefType), Kind(Kind_), Child(Child_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Kind, Child); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += Kind;
+    OB += ' ';
+    Child->print(OB);
+  }
+};
+
+struct AbiTagAttr : Node {
+  Node *Base;
+  StringView Tag;
+
+  AbiTagAttr(Node* Base_, StringView Tag_)
+      : Node(KAbiTagAttr, Base_->RHSComponentCache,
+             Base_->ArrayCache, Base_->FunctionCache),
+        Base(Base_), Tag(Tag_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Base, Tag); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Base->printLeft(OB);
+    OB += "[abi:";
+    OB += Tag;
+    OB += "]";
+  }
+};
+
+class EnableIfAttr : public Node {
+  NodeArray Conditions;
+public:
+  EnableIfAttr(NodeArray Conditions_)
+      : Node(KEnableIfAttr), Conditions(Conditions_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Conditions); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += " [enable_if:";
+    Conditions.printWithComma(OB);
+    OB += ']';
+  }
+};
+
+class ObjCProtoName : public Node {
+  const Node *Ty;
+  StringView Protocol;
+
+  friend class PointerType;
+
+public:
+  ObjCProtoName(const Node *Ty_, StringView Protocol_)
+      : Node(KObjCProtoName), Ty(Ty_), Protocol(Protocol_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Ty, Protocol); }
+
+  bool isObjCObject() const {
+    return Ty->getKind() == KNameType &&
+           static_cast<const NameType *>(Ty)->getName() == "objc_object";
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Ty->print(OB);
+    OB += "<";
+    OB += Protocol;
+    OB += ">";
+  }
+};
+
+class PointerType final : public Node {
+  const Node *Pointee;
+
+public:
+  PointerType(const Node *Pointee_)
+      : Node(KPointerType, Pointee_->RHSComponentCache),
+        Pointee(Pointee_) {}
+
+  const Node *getPointee() const { return Pointee; }
+
+  template<typename Fn> void match(Fn F) const { F(Pointee); }
+
+  bool hasRHSComponentSlow(OutputBuffer &OB) const override {
+    return Pointee->hasRHSComponent(OB);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    // We rewrite objc_object<SomeProtocol>* into id<SomeProtocol>.
+    if (Pointee->getKind() != KObjCProtoName ||
+        !static_cast<const ObjCProtoName *>(Pointee)->isObjCObject()) {
+      Pointee->printLeft(OB);
+      if (Pointee->hasArray(OB))
+        OB += " ";
+      if (Pointee->hasArray(OB) || Pointee->hasFunction(OB))
+        OB += "(";
+      OB += "*";
+    } else {
+      const auto *objcProto = static_cast<const ObjCProtoName *>(Pointee);
+      OB += "id<";
+      OB += objcProto->Protocol;
+      OB += ">";
+    }
+  }
+
+  void printRight(OutputBuffer &OB) const override {
+    if (Pointee->getKind() != KObjCProtoName ||
+        !static_cast<const ObjCProtoName *>(Pointee)->isObjCObject()) {
+      if (Pointee->hasArray(OB) || Pointee->hasFunction(OB))
+        OB += ")";
+      Pointee->printRight(OB);
+    }
+  }
+};
+
+enum class ReferenceKind {
+  LValue,
+  RValue,
+};
+
+// Represents either a LValue or an RValue reference type.
+class ReferenceType : public Node {
+  const Node *Pointee;
+  ReferenceKind RK;
+
+  mutable bool Printing = false;
+
+  // Dig through any refs to refs, collapsing the ReferenceTypes as we go. The
+  // rule here is rvalue ref to rvalue ref collapses to a rvalue ref, and any
+  // other combination collapses to a lvalue ref.
+  //
+  // A combination of a TemplateForwardReference and a back-ref Substitution
+  // from an ill-formed string may have created a cycle; use cycle detection to
+  // avoid looping forever.
+  std::pair<ReferenceKind, const Node *> collapse(OutputBuffer &OB) const {
+    auto SoFar = std::make_pair(RK, Pointee);
+    // Track the chain of nodes for the Floyd's 'tortoise and hare'
+    // cycle-detection algorithm, since getSyntaxNode(S) is impure
+    PODSmallVector<const Node *, 8> Prev;
+    for (;;) {
+      const Node *SN = SoFar.second->getSyntaxNode(OB);
+      if (SN->getKind() != KReferenceType)
+        break;
+      auto *RT = static_cast<const ReferenceType *>(SN);
+      SoFar.second = RT->Pointee;
+      SoFar.first = std::min(SoFar.first, RT->RK);
+
+      // The middle of Prev is the 'slow' pointer moving at half speed
+      Prev.push_back(SoFar.second);
+      if (Prev.size() > 1 && SoFar.second == Prev[(Prev.size() - 1) / 2]) {
+        // Cycle detected
+        SoFar.second = nullptr;
+        break;
+      }
+    }
+    return SoFar;
+  }
+
+public:
+  ReferenceType(const Node *Pointee_, ReferenceKind RK_)
+      : Node(KReferenceType, Pointee_->RHSComponentCache),
+        Pointee(Pointee_), RK(RK_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Pointee, RK); }
+
+  bool hasRHSComponentSlow(OutputBuffer &OB) const override {
+    return Pointee->hasRHSComponent(OB);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (Printing)
+      return;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    std::pair<ReferenceKind, const Node *> Collapsed = collapse(OB);
+    if (!Collapsed.second)
+      return;
+    Collapsed.second->printLeft(OB);
+    if (Collapsed.second->hasArray(OB))
+      OB += " ";
+    if (Collapsed.second->hasArray(OB) || Collapsed.second->hasFunction(OB))
+      OB += "(";
+
+    OB += (Collapsed.first == ReferenceKind::LValue ? "&" : "&&");
+  }
+  void printRight(OutputBuffer &OB) const override {
+    if (Printing)
+      return;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    std::pair<ReferenceKind, const Node *> Collapsed = collapse(OB);
+    if (!Collapsed.second)
+      return;
+    if (Collapsed.second->hasArray(OB) || Collapsed.second->hasFunction(OB))
+      OB += ")";
+    Collapsed.second->printRight(OB);
+  }
+};
+
+class PointerToMemberType final : public Node {
+  const Node *ClassType;
+  const Node *MemberType;
+
+public:
+  PointerToMemberType(const Node *ClassType_, const Node *MemberType_)
+      : Node(KPointerToMemberType, MemberType_->RHSComponentCache),
+        ClassType(ClassType_), MemberType(MemberType_) {}
+
+  template<typename Fn> void match(Fn F) const { F(ClassType, MemberType); }
+
+  bool hasRHSComponentSlow(OutputBuffer &OB) const override {
+    return MemberType->hasRHSComponent(OB);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    MemberType->printLeft(OB);
+    if (MemberType->hasArray(OB) || MemberType->hasFunction(OB))
+      OB += "(";
+    else
+      OB += " ";
+    ClassType->print(OB);
+    OB += "::*";
+  }
+
+  void printRight(OutputBuffer &OB) const override {
+    if (MemberType->hasArray(OB) || MemberType->hasFunction(OB))
+      OB += ")";
+    MemberType->printRight(OB);
+  }
+};
+
+class ArrayType final : public Node {
+  const Node *Base;
+  Node *Dimension;
+
+public:
+  ArrayType(const Node *Base_, Node *Dimension_)
+      : Node(KArrayType,
+             /*RHSComponentCache=*/Cache::Yes,
+             /*ArrayCache=*/Cache::Yes),
+        Base(Base_), Dimension(Dimension_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Base, Dimension); }
+
+  bool hasRHSComponentSlow(OutputBuffer &) const override { return true; }
+  bool hasArraySlow(OutputBuffer &) const override { return true; }
+
+  void printLeft(OutputBuffer &OB) const override { Base->printLeft(OB); }
+
+  void printRight(OutputBuffer &OB) const override {
+    if (OB.back() != ']')
+      OB += " ";
+    OB += "[";
+    if (Dimension)
+      Dimension->print(OB);
+    OB += "]";
+    Base->printRight(OB);
+  }
+};
+
+class FunctionType final : public Node {
+  const Node *Ret;
+  NodeArray Params;
+  Qualifiers CVQuals;
+  FunctionRefQual RefQual;
+  const Node *ExceptionSpec;
+
+public:
+  FunctionType(const Node *Ret_, NodeArray Params_, Qualifiers CVQuals_,
+               FunctionRefQual RefQual_, const Node *ExceptionSpec_)
+      : Node(KFunctionType,
+             /*RHSComponentCache=*/Cache::Yes, /*ArrayCache=*/Cache::No,
+             /*FunctionCache=*/Cache::Yes),
+        Ret(Ret_), Params(Params_), CVQuals(CVQuals_), RefQual(RefQual_),
+        ExceptionSpec(ExceptionSpec_) {}
+
+  template<typename Fn> void match(Fn F) const {
+    F(Ret, Params, CVQuals, RefQual, ExceptionSpec);
+  }
+
+  bool hasRHSComponentSlow(OutputBuffer &) const override { return true; }
+  bool hasFunctionSlow(OutputBuffer &) const override { return true; }
+
+  // Handle C++'s ... quirky decl grammar by using the left & right
+  // distinction. Consider:
+  //   int (*f(float))(char) {}
+  // f is a function that takes a float and returns a pointer to a function
+  // that takes a char and returns an int. If we're trying to print f, start
+  // by printing out the return types's left, then print our parameters, then
+  // finally print right of the return type.
+  void printLeft(OutputBuffer &OB) const override {
+    Ret->printLeft(OB);
+    OB += " ";
+  }
+
+  void printRight(OutputBuffer &OB) const override {
+    OB.printOpen();
+    Params.printWithComma(OB);
+    OB.printClose();
+    Ret->printRight(OB);
+
+    if (CVQuals & QualConst)
+      OB += " const";
+    if (CVQuals & QualVolatile)
+      OB += " volatile";
+    if (CVQuals & QualRestrict)
+      OB += " restrict";
+
+    if (RefQual == FrefQualLValue)
+      OB += " &";
+    else if (RefQual == FrefQualRValue)
+      OB += " &&";
+
+    if (ExceptionSpec != nullptr) {
+      OB += ' ';
+      ExceptionSpec->print(OB);
+    }
+  }
+};
+
+class NoexceptSpec : public Node {
+  const Node *E;
+public:
+  NoexceptSpec(const Node *E_) : Node(KNoexceptSpec), E(E_) {}
+
+  template<typename Fn> void match(Fn F) const { F(E); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "noexcept";
+    OB.printOpen();
+    E->printAsOperand(OB);
+    OB.printClose();
+  }
+};
+
+class DynamicExceptionSpec : public Node {
+  NodeArray Types;
+public:
+  DynamicExceptionSpec(NodeArray Types_)
+      : Node(KDynamicExceptionSpec), Types(Types_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Types); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "throw";
+    OB.printOpen();
+    Types.printWithComma(OB);
+    OB.printClose();
+  }
+};
+
+class FunctionEncoding final : public Node {
+  const Node *Ret;
+  const Node *Name;
+  NodeArray Params;
+  const Node *Attrs;
+  Qualifiers CVQuals;
+  FunctionRefQual RefQual;
+
+public:
+  FunctionEncoding(const Node *Ret_, const Node *Name_, NodeArray Params_,
+                   const Node *Attrs_, Qualifiers CVQuals_,
+                   FunctionRefQual RefQual_)
+      : Node(KFunctionEncoding,
+             /*RHSComponentCache=*/Cache::Yes, /*ArrayCache=*/Cache::No,
+             /*FunctionCache=*/Cache::Yes),
+        Ret(Ret_), Name(Name_), Params(Params_), Attrs(Attrs_),
+        CVQuals(CVQuals_), RefQual(RefQual_) {}
+
+  template<typename Fn> void match(Fn F) const {
+    F(Ret, Name, Params, Attrs, CVQuals, RefQual);
+  }
+
+  Qualifiers getCVQuals() const { return CVQuals; }
+  FunctionRefQual getRefQual() const { return RefQual; }
+  NodeArray getParams() const { return Params; }
+  const Node *getReturnType() const { return Ret; }
+
+  bool hasRHSComponentSlow(OutputBuffer &) const override { return true; }
+  bool hasFunctionSlow(OutputBuffer &) const override { return true; }
+
+  const Node *getName() const { return Name; }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (Ret) {
+      Ret->printLeft(OB);
+      if (!Ret->hasRHSComponent(OB))
+        OB += " ";
+    }
+    Name->print(OB);
+  }
+
+  void printRight(OutputBuffer &OB) const override {
+    OB.printOpen();
+    Params.printWithComma(OB);
+    OB.printClose();
+    if (Ret)
+      Ret->printRight(OB);
+
+    if (CVQuals & QualConst)
+      OB += " const";
+    if (CVQuals & QualVolatile)
+      OB += " volatile";
+    if (CVQuals & QualRestrict)
+      OB += " restrict";
+
+    if (RefQual == FrefQualLValue)
+      OB += " &";
+    else if (RefQual == FrefQualRValue)
+      OB += " &&";
+
+    if (Attrs != nullptr)
+      Attrs->print(OB);
+  }
+};
+
+class LiteralOperator : public Node {
+  const Node *OpName;
+
+public:
+  LiteralOperator(const Node *OpName_)
+      : Node(KLiteralOperator), OpName(OpName_) {}
+
+  template<typename Fn> void match(Fn F) const { F(OpName); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "operator\"\" ";
+    OpName->print(OB);
+  }
+};
+
+class SpecialName final : public Node {
+  const StringView Special;
+  const Node *Child;
+
+public:
+  SpecialName(StringView Special_, const Node *Child_)
+      : Node(KSpecialName), Special(Special_), Child(Child_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Special, Child); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += Special;
+    Child->print(OB);
+  }
+};
+
+class CtorVtableSpecialName final : public Node {
+  const Node *FirstType;
+  const Node *SecondType;
+
+public:
+  CtorVtableSpecialName(const Node *FirstType_, const Node *SecondType_)
+      : Node(KCtorVtableSpecialName),
+        FirstType(FirstType_), SecondType(SecondType_) {}
+
+  template<typename Fn> void match(Fn F) const { F(FirstType, SecondType); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "construction vtable for ";
+    FirstType->print(OB);
+    OB += "-in-";
+    SecondType->print(OB);
+  }
+};
+
+struct NestedName : Node {
+  Node *Qual;
+  Node *Name;
+
+  NestedName(Node *Qual_, Node *Name_)
+      : Node(KNestedName), Qual(Qual_), Name(Name_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Qual, Name); }
+
+  StringView getBaseName() const override { return Name->getBaseName(); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Qual->print(OB);
+    OB += "::";
+    Name->print(OB);
+  }
+};
+
+struct ModuleName : Node {
+  ModuleName *Parent;
+  Node *Name;
+  bool IsPartition;
+
+  ModuleName(ModuleName *Parent_, Node *Name_, bool IsPartition_ = false)
+      : Node(KModuleName), Parent(Parent_), Name(Name_),
+        IsPartition(IsPartition_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Parent, Name, IsPartition);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (Parent)
+      Parent->print(OB);
+    if (Parent || IsPartition)
+      OB += IsPartition ? ':' : '.';
+    Name->print(OB);
+  }
+};
+
+struct ModuleEntity : Node {
+  ModuleName *Module;
+  Node *Name;
+
+  ModuleEntity(ModuleName *Module_, Node *Name_)
+      : Node(KModuleEntity), Module(Module_), Name(Name_) {}
+
+  template <typename Fn> void match(Fn F) const { F(Module, Name); }
+
+  StringView getBaseName() const override { return Name->getBaseName(); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Name->print(OB);
+    OB += '@';
+    Module->print(OB);
+  }
+};
+
+struct LocalName : Node {
+  Node *Encoding;
+  Node *Entity;
+
+  LocalName(Node *Encoding_, Node *Entity_)
+      : Node(KLocalName), Encoding(Encoding_), Entity(Entity_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Encoding, Entity); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Encoding->print(OB);
+    OB += "::";
+    Entity->print(OB);
+  }
+};
+
+class QualifiedName final : public Node {
+  // qualifier::name
+  const Node *Qualifier;
+  const Node *Name;
+
+public:
+  QualifiedName(const Node *Qualifier_, const Node *Name_)
+      : Node(KQualifiedName), Qualifier(Qualifier_), Name(Name_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Qualifier, Name); }
+
+  StringView getBaseName() const override { return Name->getBaseName(); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Qualifier->print(OB);
+    OB += "::";
+    Name->print(OB);
+  }
+};
+
+class VectorType final : public Node {
+  const Node *BaseType;
+  const Node *Dimension;
+
+public:
+  VectorType(const Node *BaseType_, const Node *Dimension_)
+      : Node(KVectorType), BaseType(BaseType_), Dimension(Dimension_) {}
+
+  const Node *getBaseType() const { return BaseType; }
+  const Node *getDimension() const { return Dimension; }
+
+  template<typename Fn> void match(Fn F) const { F(BaseType, Dimension); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    BaseType->print(OB);
+    OB += " vector[";
+    if (Dimension)
+      Dimension->print(OB);
+    OB += "]";
+  }
+};
+
+class PixelVectorType final : public Node {
+  const Node *Dimension;
+
+public:
+  PixelVectorType(const Node *Dimension_)
+      : Node(KPixelVectorType), Dimension(Dimension_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Dimension); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    // FIXME: This should demangle as "vector pixel".
+    OB += "pixel vector[";
+    Dimension->print(OB);
+    OB += "]";
+  }
+};
+
+class BinaryFPType final : public Node {
+  const Node *Dimension;
+
+public:
+  BinaryFPType(const Node *Dimension_)
+      : Node(KBinaryFPType), Dimension(Dimension_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Dimension); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "_Float";
+    Dimension->print(OB);
+  }
+};
+
+enum class TemplateParamKind { Type, NonType, Template };
+
+/// An invented name for a template parameter for which we don't have a
+/// corresponding template argument.
+///
+/// This node is created when parsing the <lambda-sig> for a lambda with
+/// explicit template arguments, which might be referenced in the parameter
+/// types appearing later in the <lambda-sig>.
+class SyntheticTemplateParamName final : public Node {
+  TemplateParamKind Kind;
+  unsigned Index;
+
+public:
+  SyntheticTemplateParamName(TemplateParamKind Kind_, unsigned Index_)
+      : Node(KSyntheticTemplateParamName), Kind(Kind_), Index(Index_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Kind, Index); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    switch (Kind) {
+    case TemplateParamKind::Type:
+      OB += "$T";
+      break;
+    case TemplateParamKind::NonType:
+      OB += "$N";
+      break;
+    case TemplateParamKind::Template:
+      OB += "$TT";
+      break;
+    }
+    if (Index > 0)
+      OB << Index - 1;
+  }
+};
+
+/// A template type parameter declaration, 'typename T'.
+class TypeTemplateParamDecl final : public Node {
+  Node *Name;
+
+public:
+  TypeTemplateParamDecl(Node *Name_)
+      : Node(KTypeTemplateParamDecl, Cache::Yes), Name(Name_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Name); }
+
+  void printLeft(OutputBuffer &OB) const override { OB += "typename "; }
+
+  void printRight(OutputBuffer &OB) const override { Name->print(OB); }
+};
+
+/// A non-type template parameter declaration, 'int N'.
+class NonTypeTemplateParamDecl final : public Node {
+  Node *Name;
+  Node *Type;
+
+public:
+  NonTypeTemplateParamDecl(Node *Name_, Node *Type_)
+      : Node(KNonTypeTemplateParamDecl, Cache::Yes), Name(Name_), Type(Type_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Name, Type); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Type->printLeft(OB);
+    if (!Type->hasRHSComponent(OB))
+      OB += " ";
+  }
+
+  void printRight(OutputBuffer &OB) const override {
+    Name->print(OB);
+    Type->printRight(OB);
+  }
+};
+
+/// A template template parameter declaration,
+/// 'template<typename T> typename N'.
+class TemplateTemplateParamDecl final : public Node {
+  Node *Name;
+  NodeArray Params;
+
+public:
+  TemplateTemplateParamDecl(Node *Name_, NodeArray Params_)
+      : Node(KTemplateTemplateParamDecl, Cache::Yes), Name(Name_),
+        Params(Params_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Name, Params); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    ScopedOverride<unsigned> LT(OB.GtIsGt, 0);
+    OB += "template<";
+    Params.printWithComma(OB);
+    OB += "> typename ";
+  }
+
+  void printRight(OutputBuffer &OB) const override { Name->print(OB); }
+};
+
+/// A template parameter pack declaration, 'typename ...T'.
+class TemplateParamPackDecl final : public Node {
+  Node *Param;
+
+public:
+  TemplateParamPackDecl(Node *Param_)
+      : Node(KTemplateParamPackDecl, Cache::Yes), Param(Param_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Param); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Param->printLeft(OB);
+    OB += "...";
+  }
+
+  void printRight(OutputBuffer &OB) const override { Param->printRight(OB); }
+};
+
+/// An unexpanded parameter pack (either in the expression or type context). If
+/// this AST is correct, this node will have a ParameterPackExpansion node above
+/// it.
+///
+/// This node is created when some <template-args> are found that apply to an
+/// <encoding>, and is stored in the TemplateParams table. In order for this to
+/// appear in the final AST, it has to referenced via a <template-param> (ie,
+/// T_).
+class ParameterPack final : public Node {
+  NodeArray Data;
+
+  // Setup OutputBuffer for a pack expansion, unless we're already expanding
+  // one.
+  void initializePackExpansion(OutputBuffer &OB) const {
+    if (OB.CurrentPackMax == std::numeric_limits<unsigned>::max()) {
+      OB.CurrentPackMax = static_cast<unsigned>(Data.size());
+      OB.CurrentPackIndex = 0;
+    }
+  }
+
+public:
+  ParameterPack(NodeArray Data_) : Node(KParameterPack), Data(Data_) {
+    ArrayCache = FunctionCache = RHSComponentCache = Cache::Unknown;
+    if (std::all_of(Data.begin(), Data.end(), [](Node* P) {
+          return P->ArrayCache == Cache::No;
+        }))
+      ArrayCache = Cache::No;
+    if (std::all_of(Data.begin(), Data.end(), [](Node* P) {
+          return P->FunctionCache == Cache::No;
+        }))
+      FunctionCache = Cache::No;
+    if (std::all_of(Data.begin(), Data.end(), [](Node* P) {
+          return P->RHSComponentCache == Cache::No;
+        }))
+      RHSComponentCache = Cache::No;
+  }
+
+  template<typename Fn> void match(Fn F) const { F(Data); }
+
+  bool hasRHSComponentSlow(OutputBuffer &OB) const override {
+    initializePackExpansion(OB);
+    size_t Idx = OB.CurrentPackIndex;
+    return Idx < Data.size() && Data[Idx]->hasRHSComponent(OB);
+  }
+  bool hasArraySlow(OutputBuffer &OB) const override {
+    initializePackExpansion(OB);
+    size_t Idx = OB.CurrentPackIndex;
+    return Idx < Data.size() && Data[Idx]->hasArray(OB);
+  }
+  bool hasFunctionSlow(OutputBuffer &OB) const override {
+    initializePackExpansion(OB);
+    size_t Idx = OB.CurrentPackIndex;
+    return Idx < Data.size() && Data[Idx]->hasFunction(OB);
+  }
+  const Node *getSyntaxNode(OutputBuffer &OB) const override {
+    initializePackExpansion(OB);
+    size_t Idx = OB.CurrentPackIndex;
+    return Idx < Data.size() ? Data[Idx]->getSyntaxNode(OB) : this;
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    initializePackExpansion(OB);
+    size_t Idx = OB.CurrentPackIndex;
+    if (Idx < Data.size())
+      Data[Idx]->printLeft(OB);
+  }
+  void printRight(OutputBuffer &OB) const override {
+    initializePackExpansion(OB);
+    size_t Idx = OB.CurrentPackIndex;
+    if (Idx < Data.size())
+      Data[Idx]->printRight(OB);
+  }
+};
+
+/// A variadic template argument. This node represents an occurrence of
+/// J<something>E in some <template-args>. It isn't itself unexpanded, unless
+/// one of it's Elements is. The parser inserts a ParameterPack into the
+/// TemplateParams table if the <template-args> this pack belongs to apply to an
+/// <encoding>.
+class TemplateArgumentPack final : public Node {
+  NodeArray Elements;
+public:
+  TemplateArgumentPack(NodeArray Elements_)
+      : Node(KTemplateArgumentPack), Elements(Elements_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Elements); }
+
+  NodeArray getElements() const { return Elements; }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Elements.printWithComma(OB);
+  }
+};
+
+/// A pack expansion. Below this node, there are some unexpanded ParameterPacks
+/// which each have Child->ParameterPackSize elements.
+class ParameterPackExpansion final : public Node {
+  const Node *Child;
+
+public:
+  ParameterPackExpansion(const Node *Child_)
+      : Node(KParameterPackExpansion), Child(Child_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Child); }
+
+  const Node *getChild() const { return Child; }
+
+  void printLeft(OutputBuffer &OB) const override {
+    constexpr unsigned Max = std::numeric_limits<unsigned>::max();
+    ScopedOverride<unsigned> SavePackIdx(OB.CurrentPackIndex, Max);
+    ScopedOverride<unsigned> SavePackMax(OB.CurrentPackMax, Max);
+    size_t StreamPos = OB.getCurrentPosition();
+
+    // Print the first element in the pack. If Child contains a ParameterPack,
+    // it will set up S.CurrentPackMax and print the first element.
+    Child->print(OB);
+
+    // No ParameterPack was found in Child. This can occur if we've found a pack
+    // expansion on a <function-param>.
+    if (OB.CurrentPackMax == Max) {
+      OB += "...";
+      return;
+    }
+
+    // We found a ParameterPack, but it has no elements. Erase whatever we may
+    // of printed.
+    if (OB.CurrentPackMax == 0) {
+      OB.setCurrentPosition(StreamPos);
+      return;
+    }
+
+    // Else, iterate through the rest of the elements in the pack.
+    for (unsigned I = 1, E = OB.CurrentPackMax; I < E; ++I) {
+      OB += ", ";
+      OB.CurrentPackIndex = I;
+      Child->print(OB);
+    }
+  }
+};
+
+class TemplateArgs final : public Node {
+  NodeArray Params;
+
+public:
+  TemplateArgs(NodeArray Params_) : Node(KTemplateArgs), Params(Params_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Params); }
+
+  NodeArray getParams() { return Params; }
+
+  void printLeft(OutputBuffer &OB) const override {
+    ScopedOverride<unsigned> LT(OB.GtIsGt, 0);
+    OB += "<";
+    Params.printWithComma(OB);
+    OB += ">";
+  }
+};
+
+/// A forward-reference to a template argument that was not known at the point
+/// where the template parameter name was parsed in a mangling.
+///
+/// This is created when demangling the name of a specialization of a
+/// conversion function template:
+///
+/// \code
+/// struct A {
+///   template<typename T> operator T*();
+/// };
+/// \endcode
+///
+/// When demangling a specialization of the conversion function template, we
+/// encounter the name of the template (including the \c T) before we reach
+/// the template argument list, so we cannot substitute the parameter name
+/// for the corresponding argument while parsing. Instead, we create a
+/// \c ForwardTemplateReference node that is resolved after we parse the
+/// template arguments.
+struct ForwardTemplateReference : Node {
+  size_t Index;
+  Node *Ref = nullptr;
+
+  // If we're currently printing this node. It is possible (though invalid) for
+  // a forward template reference to refer to itself via a substitution. This
+  // creates a cyclic AST, which will stack overflow printing. To fix this, bail
+  // out if more than one print* function is active.
+  mutable bool Printing = false;
+
+  ForwardTemplateReference(size_t Index_)
+      : Node(KForwardTemplateReference, Cache::Unknown, Cache::Unknown,
+             Cache::Unknown),
+        Index(Index_) {}
+
+  // We don't provide a matcher for these, because the value of the node is
+  // not determined by its construction parameters, and it generally needs
+  // special handling.
+  template<typename Fn> void match(Fn F) const = delete;
+
+  bool hasRHSComponentSlow(OutputBuffer &OB) const override {
+    if (Printing)
+      return false;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    return Ref->hasRHSComponent(OB);
+  }
+  bool hasArraySlow(OutputBuffer &OB) const override {
+    if (Printing)
+      return false;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    return Ref->hasArray(OB);
+  }
+  bool hasFunctionSlow(OutputBuffer &OB) const override {
+    if (Printing)
+      return false;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    return Ref->hasFunction(OB);
+  }
+  const Node *getSyntaxNode(OutputBuffer &OB) const override {
+    if (Printing)
+      return this;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    return Ref->getSyntaxNode(OB);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (Printing)
+      return;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    Ref->printLeft(OB);
+  }
+  void printRight(OutputBuffer &OB) const override {
+    if (Printing)
+      return;
+    ScopedOverride<bool> SavePrinting(Printing, true);
+    Ref->printRight(OB);
+  }
+};
+
+struct NameWithTemplateArgs : Node {
+  // name<template_args>
+  Node *Name;
+  Node *TemplateArgs;
+
+  NameWithTemplateArgs(Node *Name_, Node *TemplateArgs_)
+      : Node(KNameWithTemplateArgs), Name(Name_), TemplateArgs(TemplateArgs_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Name, TemplateArgs); }
+
+  StringView getBaseName() const override { return Name->getBaseName(); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Name->print(OB);
+    TemplateArgs->print(OB);
+  }
+};
+
+class GlobalQualifiedName final : public Node {
+  Node *Child;
+
+public:
+  GlobalQualifiedName(Node* Child_)
+      : Node(KGlobalQualifiedName), Child(Child_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Child); }
+
+  StringView getBaseName() const override { return Child->getBaseName(); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "::";
+    Child->print(OB);
+  }
+};
+
+enum class SpecialSubKind {
+  allocator,
+  basic_string,
+  string,
+  istream,
+  ostream,
+  iostream,
+};
+
+class SpecialSubstitution;
+class ExpandedSpecialSubstitution : public Node {
+protected:
+  SpecialSubKind SSK;
+
+  ExpandedSpecialSubstitution(SpecialSubKind SSK_, Kind K_)
+      : Node(K_), SSK(SSK_) {}
+public:
+  ExpandedSpecialSubstitution(SpecialSubKind SSK_)
+      : ExpandedSpecialSubstitution(SSK_, KExpandedSpecialSubstitution) {}
+  inline ExpandedSpecialSubstitution(SpecialSubstitution const *);
+
+  template<typename Fn> void match(Fn F) const { F(SSK); }
+
+protected:
+  bool isInstantiation() const {
+    return unsigned(SSK) >= unsigned(SpecialSubKind::string);
+  }
+
+  StringView getBaseName() const override {
+    switch (SSK) {
+    case SpecialSubKind::allocator:
+      return StringView("allocator");
+    case SpecialSubKind::basic_string:
+      return StringView("basic_string");
+    case SpecialSubKind::string:
+      return StringView("basic_string");
+    case SpecialSubKind::istream:
+      return StringView("basic_istream");
+    case SpecialSubKind::ostream:
+      return StringView("basic_ostream");
+    case SpecialSubKind::iostream:
+      return StringView("basic_iostream");
+    }
+    DEMANGLE_UNREACHABLE;
+  }
+
+private:
+  void printLeft(OutputBuffer &OB) const override {
+    OB << "std::" << getBaseName();
+    if (isInstantiation()) {
+      OB << "<char, std::char_traits<char>";
+      if (SSK == SpecialSubKind::string)
+        OB << ", std::allocator<char>";
+      OB << ">";
+    }
+  }
+};
+
+class SpecialSubstitution final : public ExpandedSpecialSubstitution {
+public:
+  SpecialSubstitution(SpecialSubKind SSK_)
+      : ExpandedSpecialSubstitution(SSK_, KSpecialSubstitution) {}
+
+  template<typename Fn> void match(Fn F) const { F(SSK); }
+
+  StringView getBaseName() const override {
+    auto SV = ExpandedSpecialSubstitution::getBaseName ();
+    if (isInstantiation()) {
+      // The instantiations are typedefs that drop the "basic_" prefix.
+      assert(SV.startsWith("basic_"));
+      SV = SV.dropFront(sizeof("basic_") - 1);
+    }
+    return SV;
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB << "std::" << getBaseName();
+  }
+};
+
+inline ExpandedSpecialSubstitution::ExpandedSpecialSubstitution(
+    SpecialSubstitution const *SS)
+    : ExpandedSpecialSubstitution(SS->SSK) {}
+
+class CtorDtorName final : public Node {
+  const Node *Basename;
+  const bool IsDtor;
+  const int Variant;
+
+public:
+  CtorDtorName(const Node *Basename_, bool IsDtor_, int Variant_)
+      : Node(KCtorDtorName), Basename(Basename_), IsDtor(IsDtor_),
+        Variant(Variant_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Basename, IsDtor, Variant); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (IsDtor)
+      OB += "~";
+    OB += Basename->getBaseName();
+  }
+};
+
+class DtorName : public Node {
+  const Node *Base;
+
+public:
+  DtorName(const Node *Base_) : Node(KDtorName), Base(Base_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Base); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "~";
+    Base->printLeft(OB);
+  }
+};
+
+class UnnamedTypeName : public Node {
+  const StringView Count;
+
+public:
+  UnnamedTypeName(StringView Count_) : Node(KUnnamedTypeName), Count(Count_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Count); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "'unnamed";
+    OB += Count;
+    OB += "\'";
+  }
+};
+
+class ClosureTypeName : public Node {
+  NodeArray TemplateParams;
+  NodeArray Params;
+  StringView Count;
+
+public:
+  ClosureTypeName(NodeArray TemplateParams_, NodeArray Params_,
+                  StringView Count_)
+      : Node(KClosureTypeName), TemplateParams(TemplateParams_),
+        Params(Params_), Count(Count_) {}
+
+  template<typename Fn> void match(Fn F) const {
+    F(TemplateParams, Params, Count);
+  }
+
+  void printDeclarator(OutputBuffer &OB) const {
+    if (!TemplateParams.empty()) {
+      ScopedOverride<unsigned> LT(OB.GtIsGt, 0);
+      OB += "<";
+      TemplateParams.printWithComma(OB);
+      OB += ">";
+    }
+    OB.printOpen();
+    Params.printWithComma(OB);
+    OB.printClose();
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "\'lambda";
+    OB += Count;
+    OB += "\'";
+    printDeclarator(OB);
+  }
+};
+
+class StructuredBindingName : public Node {
+  NodeArray Bindings;
+public:
+  StructuredBindingName(NodeArray Bindings_)
+      : Node(KStructuredBindingName), Bindings(Bindings_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Bindings); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB.printOpen('[');
+    Bindings.printWithComma(OB);
+    OB.printClose(']');
+  }
+};
+
+// -- Expression Nodes --
+
+class BinaryExpr : public Node {
+  const Node *LHS;
+  const StringView InfixOperator;
+  const Node *RHS;
+
+public:
+  BinaryExpr(const Node *LHS_, StringView InfixOperator_, const Node *RHS_,
+             Prec Prec_)
+      : Node(KBinaryExpr, Prec_), LHS(LHS_), InfixOperator(InfixOperator_),
+        RHS(RHS_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(LHS, InfixOperator, RHS, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    bool ParenAll = OB.isGtInsideTemplateArgs() &&
+                    (InfixOperator == ">" || InfixOperator == ">>");
+    if (ParenAll)
+      OB.printOpen();
+    // Assignment is right associative, with special LHS precedence.
+    bool IsAssign = getPrecedence() == Prec::Assign;
+    LHS->printAsOperand(OB, IsAssign ? Prec::OrIf : getPrecedence(), !IsAssign);
+    // No space before comma operator
+    if (!(InfixOperator == ","))
+      OB += " ";
+    OB += InfixOperator;
+    OB += " ";
+    RHS->printAsOperand(OB, getPrecedence(), IsAssign);
+    if (ParenAll)
+      OB.printClose();
+  }
+};
+
+class ArraySubscriptExpr : public Node {
+  const Node *Op1;
+  const Node *Op2;
+
+public:
+  ArraySubscriptExpr(const Node *Op1_, const Node *Op2_, Prec Prec_)
+      : Node(KArraySubscriptExpr, Prec_), Op1(Op1_), Op2(Op2_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Op1, Op2, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Op1->printAsOperand(OB, getPrecedence());
+    OB.printOpen('[');
+    Op2->printAsOperand(OB);
+    OB.printClose(']');
+  }
+};
+
+class PostfixExpr : public Node {
+  const Node *Child;
+  const StringView Operator;
+
+public:
+  PostfixExpr(const Node *Child_, StringView Operator_, Prec Prec_)
+      : Node(KPostfixExpr, Prec_), Child(Child_), Operator(Operator_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Child, Operator, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Child->printAsOperand(OB, getPrecedence(), true);
+    OB += Operator;
+  }
+};
+
+class ConditionalExpr : public Node {
+  const Node *Cond;
+  const Node *Then;
+  const Node *Else;
+
+public:
+  ConditionalExpr(const Node *Cond_, const Node *Then_, const Node *Else_,
+                  Prec Prec_)
+      : Node(KConditionalExpr, Prec_), Cond(Cond_), Then(Then_), Else(Else_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Cond, Then, Else, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Cond->printAsOperand(OB, getPrecedence());
+    OB += " ? ";
+    Then->printAsOperand(OB);
+    OB += " : ";
+    Else->printAsOperand(OB, Prec::Assign, true);
+  }
+};
+
+class MemberExpr : public Node {
+  const Node *LHS;
+  const StringView Kind;
+  const Node *RHS;
+
+public:
+  MemberExpr(const Node *LHS_, StringView Kind_, const Node *RHS_, Prec Prec_)
+      : Node(KMemberExpr, Prec_), LHS(LHS_), Kind(Kind_), RHS(RHS_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(LHS, Kind, RHS, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    LHS->printAsOperand(OB, getPrecedence(), true);
+    OB += Kind;
+    RHS->printAsOperand(OB, getPrecedence(), false);
+  }
+};
+
+class SubobjectExpr : public Node {
+  const Node *Type;
+  const Node *SubExpr;
+  StringView Offset;
+  NodeArray UnionSelectors;
+  bool OnePastTheEnd;
+
+public:
+  SubobjectExpr(const Node *Type_, const Node *SubExpr_, StringView Offset_,
+                NodeArray UnionSelectors_, bool OnePastTheEnd_)
+      : Node(KSubobjectExpr), Type(Type_), SubExpr(SubExpr_), Offset(Offset_),
+        UnionSelectors(UnionSelectors_), OnePastTheEnd(OnePastTheEnd_) {}
+
+  template<typename Fn> void match(Fn F) const {
+    F(Type, SubExpr, Offset, UnionSelectors, OnePastTheEnd);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    SubExpr->print(OB);
+    OB += ".<";
+    Type->print(OB);
+    OB += " at offset ";
+    if (Offset.empty()) {
+      OB += "0";
+    } else if (Offset[0] == 'n') {
+      OB += "-";
+      OB += Offset.dropFront();
+    } else {
+      OB += Offset;
+    }
+    OB += ">";
+  }
+};
+
+class EnclosingExpr : public Node {
+  const StringView Prefix;
+  const Node *Infix;
+  const StringView Postfix;
+
+public:
+  EnclosingExpr(StringView Prefix_, const Node *Infix_,
+                Prec Prec_ = Prec::Primary)
+      : Node(KEnclosingExpr, Prec_), Prefix(Prefix_), Infix(Infix_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Prefix, Infix, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += Prefix;
+    OB.printOpen();
+    Infix->print(OB);
+    OB.printClose();
+    OB += Postfix;
+  }
+};
+
+class CastExpr : public Node {
+  // cast_kind<to>(from)
+  const StringView CastKind;
+  const Node *To;
+  const Node *From;
+
+public:
+  CastExpr(StringView CastKind_, const Node *To_, const Node *From_, Prec Prec_)
+      : Node(KCastExpr, Prec_), CastKind(CastKind_), To(To_), From(From_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(CastKind, To, From, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += CastKind;
+    {
+      ScopedOverride<unsigned> LT(OB.GtIsGt, 0);
+      OB += "<";
+      To->printLeft(OB);
+      OB += ">";
+    }
+    OB.printOpen();
+    From->printAsOperand(OB);
+    OB.printClose();
+  }
+};
+
+class SizeofParamPackExpr : public Node {
+  const Node *Pack;
+
+public:
+  SizeofParamPackExpr(const Node *Pack_)
+      : Node(KSizeofParamPackExpr), Pack(Pack_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Pack); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "sizeof...";
+    OB.printOpen();
+    ParameterPackExpansion PPE(Pack);
+    PPE.printLeft(OB);
+    OB.printClose();
+  }
+};
+
+class CallExpr : public Node {
+  const Node *Callee;
+  NodeArray Args;
+
+public:
+  CallExpr(const Node *Callee_, NodeArray Args_, Prec Prec_)
+      : Node(KCallExpr, Prec_), Callee(Callee_), Args(Args_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Callee, Args, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    Callee->print(OB);
+    OB.printOpen();
+    Args.printWithComma(OB);
+    OB.printClose();
+  }
+};
+
+class NewExpr : public Node {
+  // new (expr_list) type(init_list)
+  NodeArray ExprList;
+  Node *Type;
+  NodeArray InitList;
+  bool IsGlobal; // ::operator new ?
+  bool IsArray;  // new[] ?
+public:
+  NewExpr(NodeArray ExprList_, Node *Type_, NodeArray InitList_, bool IsGlobal_,
+          bool IsArray_, Prec Prec_)
+      : Node(KNewExpr, Prec_), ExprList(ExprList_), Type(Type_),
+        InitList(InitList_), IsGlobal(IsGlobal_), IsArray(IsArray_) {}
+
+  template<typename Fn> void match(Fn F) const {
+    F(ExprList, Type, InitList, IsGlobal, IsArray, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (IsGlobal)
+      OB += "::";
+    OB += "new";
+    if (IsArray)
+      OB += "[]";
+    if (!ExprList.empty()) {
+      OB.printOpen();
+      ExprList.printWithComma(OB);
+      OB.printClose();
+    }
+    OB += " ";
+    Type->print(OB);
+    if (!InitList.empty()) {
+      OB.printOpen();
+      InitList.printWithComma(OB);
+      OB.printClose();
+    }
+  }
+};
+
+class DeleteExpr : public Node {
+  Node *Op;
+  bool IsGlobal;
+  bool IsArray;
+
+public:
+  DeleteExpr(Node *Op_, bool IsGlobal_, bool IsArray_, Prec Prec_)
+      : Node(KDeleteExpr, Prec_), Op(Op_), IsGlobal(IsGlobal_),
+        IsArray(IsArray_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Op, IsGlobal, IsArray, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (IsGlobal)
+      OB += "::";
+    OB += "delete";
+    if (IsArray)
+      OB += "[]";
+    OB += ' ';
+    Op->print(OB);
+  }
+};
+
+class PrefixExpr : public Node {
+  StringView Prefix;
+  Node *Child;
+
+public:
+  PrefixExpr(StringView Prefix_, Node *Child_, Prec Prec_)
+      : Node(KPrefixExpr, Prec_), Prefix(Prefix_), Child(Child_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Prefix, Child, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += Prefix;
+    Child->printAsOperand(OB, getPrecedence());
+  }
+};
+
+class FunctionParam : public Node {
+  StringView Number;
+
+public:
+  FunctionParam(StringView Number_) : Node(KFunctionParam), Number(Number_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Number); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "fp";
+    OB += Number;
+  }
+};
+
+class ConversionExpr : public Node {
+  const Node *Type;
+  NodeArray Expressions;
+
+public:
+  ConversionExpr(const Node *Type_, NodeArray Expressions_, Prec Prec_)
+      : Node(KConversionExpr, Prec_), Type(Type_), Expressions(Expressions_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Type, Expressions, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB.printOpen();
+    Type->print(OB);
+    OB.printClose();
+    OB.printOpen();
+    Expressions.printWithComma(OB);
+    OB.printClose();
+  }
+};
+
+class PointerToMemberConversionExpr : public Node {
+  const Node *Type;
+  const Node *SubExpr;
+  StringView Offset;
+
+public:
+  PointerToMemberConversionExpr(const Node *Type_, const Node *SubExpr_,
+                                StringView Offset_, Prec Prec_)
+      : Node(KPointerToMemberConversionExpr, Prec_), Type(Type_),
+        SubExpr(SubExpr_), Offset(Offset_) {}
+
+  template <typename Fn> void match(Fn F) const {
+    F(Type, SubExpr, Offset, getPrecedence());
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB.printOpen();
+    Type->print(OB);
+    OB.printClose();
+    OB.printOpen();
+    SubExpr->print(OB);
+    OB.printClose();
+  }
+};
+
+class InitListExpr : public Node {
+  const Node *Ty;
+  NodeArray Inits;
+public:
+  InitListExpr(const Node *Ty_, NodeArray Inits_)
+      : Node(KInitListExpr), Ty(Ty_), Inits(Inits_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Ty, Inits); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (Ty)
+      Ty->print(OB);
+    OB += '{';
+    Inits.printWithComma(OB);
+    OB += '}';
+  }
+};
+
+class BracedExpr : public Node {
+  const Node *Elem;
+  const Node *Init;
+  bool IsArray;
+public:
+  BracedExpr(const Node *Elem_, const Node *Init_, bool IsArray_)
+      : Node(KBracedExpr), Elem(Elem_), Init(Init_), IsArray(IsArray_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Elem, Init, IsArray); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (IsArray) {
+      OB += '[';
+      Elem->print(OB);
+      OB += ']';
+    } else {
+      OB += '.';
+      Elem->print(OB);
+    }
+    if (Init->getKind() != KBracedExpr && Init->getKind() != KBracedRangeExpr)
+      OB += " = ";
+    Init->print(OB);
+  }
+};
+
+class BracedRangeExpr : public Node {
+  const Node *First;
+  const Node *Last;
+  const Node *Init;
+public:
+  BracedRangeExpr(const Node *First_, const Node *Last_, const Node *Init_)
+      : Node(KBracedRangeExpr), First(First_), Last(Last_), Init(Init_) {}
+
+  template<typename Fn> void match(Fn F) const { F(First, Last, Init); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += '[';
+    First->print(OB);
+    OB += " ... ";
+    Last->print(OB);
+    OB += ']';
+    if (Init->getKind() != KBracedExpr && Init->getKind() != KBracedRangeExpr)
+      OB += " = ";
+    Init->print(OB);
+  }
+};
+
+class FoldExpr : public Node {
+  const Node *Pack, *Init;
+  StringView OperatorName;
+  bool IsLeftFold;
+
+public:
+  FoldExpr(bool IsLeftFold_, StringView OperatorName_, const Node *Pack_,
+           const Node *Init_)
+      : Node(KFoldExpr), Pack(Pack_), Init(Init_), OperatorName(OperatorName_),
+        IsLeftFold(IsLeftFold_) {}
+
+  template<typename Fn> void match(Fn F) const {
+    F(IsLeftFold, OperatorName, Pack, Init);
+  }
+
+  void printLeft(OutputBuffer &OB) const override {
+    auto PrintPack = [&] {
+      OB.printOpen();
+      ParameterPackExpansion(Pack).print(OB);
+      OB.printClose();
+    };
+
+    OB.printOpen();
+    // Either '[init op ]... op pack' or 'pack op ...[ op init]'
+    // Refactored to '[(init|pack) op ]...[ op (pack|init)]'
+    // Fold expr operands are cast-expressions
+    if (!IsLeftFold || Init != nullptr) {
+      // '(init|pack) op '
+      if (IsLeftFold)
+        Init->printAsOperand(OB, Prec::Cast, true);
+      else
+        PrintPack();
+      OB << " " << OperatorName << " ";
+    }
+    OB << "...";
+    if (IsLeftFold || Init != nullptr) {
+      // ' op (init|pack)'
+      OB << " " << OperatorName << " ";
+      if (IsLeftFold)
+        PrintPack();
+      else
+        Init->printAsOperand(OB, Prec::Cast, true);
+    }
+    OB.printClose();
+  }
+};
+
+class ThrowExpr : public Node {
+  const Node *Op;
+
+public:
+  ThrowExpr(const Node *Op_) : Node(KThrowExpr), Op(Op_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Op); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "throw ";
+    Op->print(OB);
+  }
+};
+
+class BoolExpr : public Node {
+  bool Value;
+
+public:
+  BoolExpr(bool Value_) : Node(KBoolExpr), Value(Value_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Value); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += Value ? StringView("true") : StringView("false");
+  }
+};
+
+class StringLiteral : public Node {
+  const Node *Type;
+
+public:
+  StringLiteral(const Node *Type_) : Node(KStringLiteral), Type(Type_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Type); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "\"<";
+    Type->print(OB);
+    OB += ">\"";
+  }
+};
+
+class LambdaExpr : public Node {
+  const Node *Type;
+
+public:
+  LambdaExpr(const Node *Type_) : Node(KLambdaExpr), Type(Type_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Type); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += "[]";
+    if (Type->getKind() == KClosureTypeName)
+      static_cast<const ClosureTypeName *>(Type)->printDeclarator(OB);
+    OB += "{...}";
+  }
+};
+
+class EnumLiteral : public Node {
+  // ty(integer)
+  const Node *Ty;
+  StringView Integer;
+
+public:
+  EnumLiteral(const Node *Ty_, StringView Integer_)
+      : Node(KEnumLiteral), Ty(Ty_), Integer(Integer_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Ty, Integer); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB.printOpen();
+    Ty->print(OB);
+    OB.printClose();
+
+    if (Integer[0] == 'n')
+      OB << "-" << Integer.dropFront(1);
+    else
+      OB << Integer;
+  }
+};
+
+class IntegerLiteral : public Node {
+  StringView Type;
+  StringView Value;
+
+public:
+  IntegerLiteral(StringView Type_, StringView Value_)
+      : Node(KIntegerLiteral), Type(Type_), Value(Value_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Type, Value); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    if (Type.size() > 3) {
+      OB.printOpen();
+      OB += Type;
+      OB.printClose();
+    }
+
+    if (Value[0] == 'n') {
+      OB += '-';
+      OB += Value.dropFront(1);
+    } else
+      OB += Value;
+
+    if (Type.size() <= 3)
+      OB += Type;
+  }
+};
+
+template <class Float> struct FloatData;
+
+namespace float_literal_impl {
+constexpr Node::Kind getFloatLiteralKind(float *) {
+  return Node::KFloatLiteral;
+}
+constexpr Node::Kind getFloatLiteralKind(double *) {
+  return Node::KDoubleLiteral;
+}
+constexpr Node::Kind getFloatLiteralKind(long double *) {
+  return Node::KLongDoubleLiteral;
+}
+}
+
+template <class Float> class FloatLiteralImpl : public Node {
+  const StringView Contents;
+
+  static constexpr Kind KindForClass =
+      float_literal_impl::getFloatLiteralKind((Float *)nullptr);
+
+public:
+  FloatLiteralImpl(StringView Contents_)
+      : Node(KindForClass), Contents(Contents_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Contents); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    const char *first = Contents.begin();
+    const char *last = Contents.end() + 1;
+
+    const size_t N = FloatData<Float>::mangled_size;
+    if (static_cast<std::size_t>(last - first) > N) {
+      last = first + N;
+      union {
+        Float value;
+        char buf[sizeof(Float)];
+      };
+      const char *t = first;
+      char *e = buf;
+      for (; t != last; ++t, ++e) {
+        unsigned d1 = isdigit(*t) ? static_cast<unsigned>(*t - '0')
+                                  : static_cast<unsigned>(*t - 'a' + 10);
+        ++t;
+        unsigned d0 = isdigit(*t) ? static_cast<unsigned>(*t - '0')
+                                  : static_cast<unsigned>(*t - 'a' + 10);
+        *e = static_cast<char>((d1 << 4) + d0);
+      }
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+      std::reverse(buf, e);
+#endif
+      char num[FloatData<Float>::max_demangled_size] = {0};
+      int n = snprintf(num, sizeof(num), FloatData<Float>::spec, value);
+      OB += StringView(num, num + n);
+    }
+  }
+};
+
+using FloatLiteral = FloatLiteralImpl<float>;
+using DoubleLiteral = FloatLiteralImpl<double>;
+using LongDoubleLiteral = FloatLiteralImpl<long double>;
+
+/// Visit the node. Calls \c F(P), where \c P is the node cast to the
+/// appropriate derived class.
+template<typename Fn>
+void Node::visit(Fn F) const {
+  switch (K) {
+#define NODE(X)                                                                \
+  case K##X:                                                                   \
+    return F(static_cast<const X *>(this));
+#include "ItaniumNodes.def"
+  }
+  assert(0 && "unknown mangling node kind");
+}
+
+/// Determine the kind of a node from its type.
+template<typename NodeT> struct NodeKind;
+#define NODE(X)                                                                \
+  template <> struct NodeKind<X> {                                             \
+    static constexpr Node::Kind Kind = Node::K##X;                             \
+    static constexpr const char *name() { return #X; }                         \
+  };
+#include "ItaniumNodes.def"
+
+template <typename Derived, typename Alloc> struct AbstractManglingParser {
+  const char *First;
+  const char *Last;
+
+  // Name stack, this is used by the parser to hold temporary names that were
+  // parsed. The parser collapses multiple names into new nodes to construct
+  // the AST. Once the parser is finished, names.size() == 1.
+  PODSmallVector<Node *, 32> Names;
+
+  // Substitution table. Itanium supports name substitutions as a means of
+  // compression. The string "S42_" refers to the 44nd entry (base-36) in this
+  // table.
+  PODSmallVector<Node *, 32> Subs;
+
+  using TemplateParamList = PODSmallVector<Node *, 8>;
+
+  class ScopedTemplateParamList {
+    AbstractManglingParser *Parser;
+    size_t OldNumTemplateParamLists;
+    TemplateParamList Params;
+
+  public:
+    ScopedTemplateParamList(AbstractManglingParser *TheParser)
+        : Parser(TheParser),
+          OldNumTemplateParamLists(TheParser->TemplateParams.size()) {
+      Parser->TemplateParams.push_back(&Params);
+    }
+    ~ScopedTemplateParamList() {
+      assert(Parser->TemplateParams.size() >= OldNumTemplateParamLists);
+      Parser->TemplateParams.dropBack(OldNumTemplateParamLists);
+    }
+  };
+
+  // Template parameter table. Like the above, but referenced like "T42_".
+  // This has a smaller size compared to Subs and Names because it can be
+  // stored on the stack.
+  TemplateParamList OuterTemplateParams;
+
+  // Lists of template parameters indexed by template parameter depth,
+  // referenced like "TL2_4_". If nonempty, element 0 is always
+  // OuterTemplateParams; inner elements are always template parameter lists of
+  // lambda expressions. For a generic lambda with no explicit template
+  // parameter list, the corresponding parameter list pointer will be null.
+  PODSmallVector<TemplateParamList *, 4> TemplateParams;
+
+  // Set of unresolved forward <template-param> references. These can occur in a
+  // conversion operator's type, and are resolved in the enclosing <encoding>.
+  PODSmallVector<ForwardTemplateReference *, 4> ForwardTemplateRefs;
+
+  bool TryToParseTemplateArgs = true;
+  bool PermitForwardTemplateReferences = false;
+  size_t ParsingLambdaParamsAtLevel = (size_t)-1;
+
+  unsigned NumSyntheticTemplateParameters[3] = {};
+
+  Alloc ASTAllocator;
+
+  AbstractManglingParser(const char *First_, const char *Last_)
+      : First(First_), Last(Last_) {}
+
+  Derived &getDerived() { return static_cast<Derived &>(*this); }
+
+  void reset(const char *First_, const char *Last_) {
+    First = First_;
+    Last = Last_;
+    Names.clear();
+    Subs.clear();
+    TemplateParams.clear();
+    ParsingLambdaParamsAtLevel = (size_t)-1;
+    TryToParseTemplateArgs = true;
+    PermitForwardTemplateReferences = false;
+    for (int I = 0; I != 3; ++I)
+      NumSyntheticTemplateParameters[I] = 0;
+    ASTAllocator.reset();
+  }
+
+  template <class T, class... Args> Node *make(Args &&... args) {
+    return ASTAllocator.template makeNode<T>(std::forward<Args>(args)...);
+  }
+
+  template <class It> NodeArray makeNodeArray(It begin, It end) {
+    size_t sz = static_cast<size_t>(end - begin);
+    void *mem = ASTAllocator.allocateNodeArray(sz);
+    Node **data = new (mem) Node *[sz];
+    std::copy(begin, end, data);
+    return NodeArray(data, sz);
+  }
+
+  NodeArray popTrailingNodeArray(size_t FromPosition) {
+    assert(FromPosition <= Names.size());
+    NodeArray res =
+        makeNodeArray(Names.begin() + (long)FromPosition, Names.end());
+    Names.dropBack(FromPosition);
+    return res;
+  }
+
+  bool consumeIf(StringView S) {
+    if (StringView(First, Last).startsWith(S)) {
+      First += S.size();
+      return true;
+    }
+    return false;
+  }
+
+  bool consumeIf(char C) {
+    if (First != Last && *First == C) {
+      ++First;
+      return true;
+    }
+    return false;
+  }
+
+  char consume() { return First != Last ? *First++ : '\0'; }
+
+  char look(unsigned Lookahead = 0) const {
+    if (static_cast<size_t>(Last - First) <= Lookahead)
+      return '\0';
+    return First[Lookahead];
+  }
+
+  size_t numLeft() const { return static_cast<size_t>(Last - First); }
+
+  StringView parseNumber(bool AllowNegative = false);
+  Qualifiers parseCVQualifiers();
+  bool parsePositiveInteger(size_t *Out);
+  StringView parseBareSourceName();
+
+  bool parseSeqId(size_t *Out);
+  Node *parseSubstitution();
+  Node *parseTemplateParam();
+  Node *parseTemplateParamDecl();
+  Node *parseTemplateArgs(bool TagTemplates = false);
+  Node *parseTemplateArg();
+
+  /// Parse the <expr> production.
+  Node *parseExpr();
+  Node *parsePrefixExpr(StringView Kind, Node::Prec Prec);
+  Node *parseBinaryExpr(StringView Kind, Node::Prec Prec);
+  Node *parseIntegerLiteral(StringView Lit);
+  Node *parseExprPrimary();
+  template <class Float> Node *parseFloatingLiteral();
+  Node *parseFunctionParam();
+  Node *parseConversionExpr();
+  Node *parseBracedExpr();
+  Node *parseFoldExpr();
+  Node *parsePointerToMemberConversionExpr(Node::Prec Prec);
+  Node *parseSubobjectExpr();
+
+  /// Parse the <type> production.
+  Node *parseType();
+  Node *parseFunctionType();
+  Node *parseVectorType();
+  Node *parseDecltype();
+  Node *parseArrayType();
+  Node *parsePointerToMemberType();
+  Node *parseClassEnumType();
+  Node *parseQualifiedType();
+
+  Node *parseEncoding();
+  bool parseCallOffset();
+  Node *parseSpecialName();
+
+  /// Holds some extra information about a <name> that is being parsed. This
+  /// information is only pertinent if the <name> refers to an <encoding>.
+  struct NameState {
+    bool CtorDtorConversion = false;
+    bool EndsWithTemplateArgs = false;
+    Qualifiers CVQualifiers = QualNone;
+    FunctionRefQual ReferenceQualifier = FrefQualNone;
+    size_t ForwardTemplateRefsBegin;
+
+    NameState(AbstractManglingParser *Enclosing)
+        : ForwardTemplateRefsBegin(Enclosing->ForwardTemplateRefs.size()) {}
+  };
+
+  bool resolveForwardTemplateRefs(NameState &State) {
+    size_t I = State.ForwardTemplateRefsBegin;
+    size_t E = ForwardTemplateRefs.size();
+    for (; I < E; ++I) {
+      size_t Idx = ForwardTemplateRefs[I]->Index;
+      if (TemplateParams.empty() || !TemplateParams[0] ||
+          Idx >= TemplateParams[0]->size())
+        return true;
+      ForwardTemplateRefs[I]->Ref = (*TemplateParams[0])[Idx];
+    }
+    ForwardTemplateRefs.dropBack(State.ForwardTemplateRefsBegin);
+    return false;
+  }
+
+  /// Parse the <name> production>
+  Node *parseName(NameState *State = nullptr);
+  Node *parseLocalName(NameState *State);
+  Node *parseOperatorName(NameState *State);
+  bool parseModuleNameOpt(ModuleName *&Module);
+  Node *parseUnqualifiedName(NameState *State, Node *Scope, ModuleName *Module);
+  Node *parseUnnamedTypeName(NameState *State);
+  Node *parseSourceName(NameState *State);
+  Node *parseUnscopedName(NameState *State, bool *isSubstName);
+  Node *parseNestedName(NameState *State);
+  Node *parseCtorDtorName(Node *&SoFar, NameState *State);
+
+  Node *parseAbiTags(Node *N);
+
+  struct OperatorInfo {
+    enum OIKind : unsigned char {
+      Prefix,      // Prefix unary: @ expr
+      Postfix,     // Postfix unary: expr @
+      Binary,      // Binary: lhs @ rhs
+      Array,       // Array index:  lhs [ rhs ]
+      Member,      // Member access: lhs @ rhs
+      New,         // New
+      Del,         // Delete
+      Call,        // Function call: expr (expr*)
+      CCast,       // C cast: (type)expr
+      Conditional, // Conditional: expr ? expr : expr
+      NameOnly,    // Overload only, not allowed in expression.
+      // Below do not have operator names
+      NamedCast, // Named cast, @<type>(expr)
+      OfIdOp,    // alignof, sizeof, typeid
+
+      Unnameable = NamedCast,
+    };
+    char Enc[2];      // Encoding
+    OIKind Kind;      // Kind of operator
+    bool Flag : 1;    // Entry-specific flag
+    Node::Prec Prec : 7; // Precedence
+    const char *Name; // Spelling
+
+  public:
+    constexpr OperatorInfo(const char (&E)[3], OIKind K, bool F, Node::Prec P,
+                           const char *N)
+        : Enc{E[0], E[1]}, Kind{K}, Flag{F}, Prec{P}, Name{N} {}
+
+  public:
+    bool operator<(const OperatorInfo &Other) const {
+      return *this < Other.Enc;
+    }
+    bool operator<(const char *Peek) const {
+      return Enc[0] < Peek[0] || (Enc[0] == Peek[0] && Enc[1] < Peek[1]);
+    }
+    bool operator==(const char *Peek) const {
+      return Enc[0] == Peek[0] && Enc[1] == Peek[1];
+    }
+    bool operator!=(const char *Peek) const { return !this->operator==(Peek); }
+
+  public:
+    StringView getSymbol() const {
+      StringView Res = Name;
+      if (Kind < Unnameable) {
+        assert(Res.startsWith("operator") &&
+               "operator name does not start with 'operator'");
+        Res = Res.dropFront(sizeof("operator") - 1);
+        Res.consumeFront(' ');
+      }
+      return Res;
+    }
+    StringView getName() const { return Name; }
+    OIKind getKind() const { return Kind; }
+    bool getFlag() const { return Flag; }
+    Node::Prec getPrecedence() const { return Prec; }
+  };
+  static const OperatorInfo Ops[];
+  static const size_t NumOps;
+  const OperatorInfo *parseOperatorEncoding();
+
+  /// Parse the <unresolved-name> production.
+  Node *parseUnresolvedName(bool Global);
+  Node *parseSimpleId();
+  Node *parseBaseUnresolvedName();
+  Node *parseUnresolvedType();
+  Node *parseDestructorName();
+
+  /// Top-level entry point into the parser.
+  Node *parse();
+};
+
+const char* parse_discriminator(const char* first, const char* last);
+
+// <name> ::= <nested-name> // N
+//        ::= <local-name> # See Scope Encoding below  // Z
+//        ::= <unscoped-template-name> <template-args>
+//        ::= <unscoped-name>
+//
+// <unscoped-template-name> ::= <unscoped-name>
+//                          ::= <substitution>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseName(NameState *State) {
+  if (look() == 'N')
+    return getDerived().parseNestedName(State);
+  if (look() == 'Z')
+    return getDerived().parseLocalName(State);
+
+  Node *Result = nullptr;
+  bool IsSubst = false;
+
+  Result = getDerived().parseUnscopedName(State, &IsSubst);
+  if (!Result)
+    return nullptr;
+
+  if (look() == 'I') {
+    //        ::= <unscoped-template-name> <template-args>
+    if (!IsSubst)
+      // An unscoped-template-name is substitutable.
+      Subs.push_back(Result);
+    Node *TA = getDerived().parseTemplateArgs(State != nullptr);
+    if (TA == nullptr)
+      return nullptr;
+    if (State)
+      State->EndsWithTemplateArgs = true;
+    Result = make<NameWithTemplateArgs>(Result, TA);
+  } else if (IsSubst) {
+    // The substitution case must be followed by <template-args>.
+    return nullptr;
+  }
+
+  return Result;
+}
+
+// <local-name> := Z <function encoding> E <entity name> [<discriminator>]
+//              := Z <function encoding> E s [<discriminator>]
+//              := Z <function encoding> Ed [ <parameter number> ] _ <entity name>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseLocalName(NameState *State) {
+  if (!consumeIf('Z'))
+    return nullptr;
+  Node *Encoding = getDerived().parseEncoding();
+  if (Encoding == nullptr || !consumeIf('E'))
+    return nullptr;
+
+  if (consumeIf('s')) {
+    First = parse_discriminator(First, Last);
+    auto *StringLitName = make<NameType>("string literal");
+    if (!StringLitName)
+      return nullptr;
+    return make<LocalName>(Encoding, StringLitName);
+  }
+
+  if (consumeIf('d')) {
+    parseNumber(true);
+    if (!consumeIf('_'))
+      return nullptr;
+    Node *N = getDerived().parseName(State);
+    if (N == nullptr)
+      return nullptr;
+    return make<LocalName>(Encoding, N);
+  }
+
+  Node *Entity = getDerived().parseName(State);
+  if (Entity == nullptr)
+    return nullptr;
+  First = parse_discriminator(First, Last);
+  return make<LocalName>(Encoding, Entity);
+}
+
+// <unscoped-name> ::= <unqualified-name>
+//                 ::= St <unqualified-name>   # ::std::
+// [*] extension
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseUnscopedName(NameState *State,
+                                                          bool *IsSubst) {
+
+  Node *Std = nullptr;
+  if (consumeIf("St")) {
+    Std = make<NameType>("std");
+    if (Std == nullptr)
+      return nullptr;
+  }
+
+  Node *Res = nullptr;
+  ModuleName *Module = nullptr;
+  if (look() == 'S') {
+    Node *S = getDerived().parseSubstitution();
+    if (!S)
+      return nullptr;
+    if (S->getKind() == Node::KModuleName)
+      Module = static_cast<ModuleName *>(S);
+    else if (IsSubst && Std == nullptr) {
+      Res = S;
+      *IsSubst = true;
+    } else {
+      return nullptr;
+    }
+  }
+
+  if (Res == nullptr || Std != nullptr) {
+    Res = getDerived().parseUnqualifiedName(State, Std, Module);
+  }
+
+  return Res;
+}
+
+// <unqualified-name> ::= [<module-name>] L? <operator-name> [<abi-tags>]
+//                    ::= [<module-name>] <ctor-dtor-name> [<abi-tags>]
+//                    ::= [<module-name>] L? <source-name> [<abi-tags>]
+//                    ::= [<module-name>] L? <unnamed-type-name> [<abi-tags>]
+//			# structured binding declaration
+//                    ::= [<module-name>] L? DC <source-name>+ E
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseUnqualifiedName(
+    NameState *State, Node *Scope, ModuleName *Module) {
+  if (getDerived().parseModuleNameOpt(Module))
+    return nullptr;
+
+  consumeIf('L');
+
+  Node *Result;
+  if (look() >= '1' && look() <= '9') {
+    Result = getDerived().parseSourceName(State);
+  } else if (look() == 'U') {
+    Result = getDerived().parseUnnamedTypeName(State);
+  } else if (consumeIf("DC")) {
+    // Structured binding
+    size_t BindingsBegin = Names.size();
+    do {
+      Node *Binding = getDerived().parseSourceName(State);
+      if (Binding == nullptr)
+        return nullptr;
+      Names.push_back(Binding);
+    } while (!consumeIf('E'));
+    Result = make<StructuredBindingName>(popTrailingNodeArray(BindingsBegin));
+  } else if (look() == 'C' || look() == 'D') {
+    // A <ctor-dtor-name>.
+    if (Scope == nullptr || Module != nullptr)
+      return nullptr;
+    Result = getDerived().parseCtorDtorName(Scope, State);
+  } else {
+    Result = getDerived().parseOperatorName(State);
+  }
+
+  if (Result != nullptr && Module != nullptr)
+    Result = make<ModuleEntity>(Module, Result);
+  if (Result != nullptr)
+    Result = getDerived().parseAbiTags(Result);
+  if (Result != nullptr && Scope != nullptr)
+    Result = make<NestedName>(Scope, Result);
+
+  return Result;
+}
+
+// <module-name> ::= <module-subname>
+// 	 	 ::= <module-name> <module-subname>
+//		 ::= <substitution>  # passed in by caller
+// <module-subname> ::= W <source-name>
+//		    ::= W P <source-name>
+template <typename Derived, typename Alloc>
+bool AbstractManglingParser<Derived, Alloc>::parseModuleNameOpt(
+    ModuleName *&Module) {
+  while (consumeIf('W')) {
+    bool IsPartition = consumeIf('P');
+    Node *Sub = getDerived().parseSourceName(nullptr);
+    if (!Sub)
+      return true;
+    Module =
+        static_cast<ModuleName *>(make<ModuleName>(Module, Sub, IsPartition));
+    Subs.push_back(Module);
+  }
+
+  return false;
+}
+
+// <unnamed-type-name> ::= Ut [<nonnegative number>] _
+//                     ::= <closure-type-name>
+//
+// <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _
+//
+// <lambda-sig> ::= <parameter type>+  # Parameter types or "v" if the lambda has no parameters
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseUnnamedTypeName(NameState *State) {
+  // <template-params> refer to the innermost <template-args>. Clear out any
+  // outer args that we may have inserted into TemplateParams.
+  if (State != nullptr)
+    TemplateParams.clear();
+
+  if (consumeIf("Ut")) {
+    StringView Count = parseNumber();
+    if (!consumeIf('_'))
+      return nullptr;
+    return make<UnnamedTypeName>(Count);
+  }
+  if (consumeIf("Ul")) {
+    ScopedOverride<size_t> SwapParams(ParsingLambdaParamsAtLevel,
+                                      TemplateParams.size());
+    ScopedTemplateParamList LambdaTemplateParams(this);
+
+    size_t ParamsBegin = Names.size();
+    while (look() == 'T' &&
+           StringView("yptn").find(look(1)) != StringView::npos) {
+      Node *T = parseTemplateParamDecl();
+      if (!T)
+        return nullptr;
+      Names.push_back(T);
+    }
+    NodeArray TempParams = popTrailingNodeArray(ParamsBegin);
+
+    // FIXME: If TempParams is empty and none of the function parameters
+    // includes 'auto', we should remove LambdaTemplateParams from the
+    // TemplateParams list. Unfortunately, we don't find out whether there are
+    // any 'auto' parameters until too late in an example such as:
+    //
+    //   template<typename T> void f(
+    //       decltype([](decltype([]<typename T>(T v) {}),
+    //                   auto) {})) {}
+    //   template<typename T> void f(
+    //       decltype([](decltype([]<typename T>(T w) {}),
+    //                   int) {})) {}
+    //
+    // Here, the type of v is at level 2 but the type of w is at level 1. We
+    // don't find this out until we encounter the type of the next parameter.
+    //
+    // However, compilers can't actually cope with the former example in
+    // practice, and it's likely to be made ill-formed in future, so we don't
+    // need to support it here.
+    //
+    // If we encounter an 'auto' in the function parameter types, we will
+    // recreate a template parameter scope for it, but any intervening lambdas
+    // will be parsed in the 'wrong' template parameter depth.
+    if (TempParams.empty())
+      TemplateParams.pop_back();
+
+    if (!consumeIf("vE")) {
+      do {
+        Node *P = getDerived().parseType();
+        if (P == nullptr)
+          return nullptr;
+        Names.push_back(P);
+      } while (!consumeIf('E'));
+    }
+    NodeArray Params = popTrailingNodeArray(ParamsBegin);
+
+    StringView Count = parseNumber();
+    if (!consumeIf('_'))
+      return nullptr;
+    return make<ClosureTypeName>(TempParams, Params, Count);
+  }
+  if (consumeIf("Ub")) {
+    (void)parseNumber();
+    if (!consumeIf('_'))
+      return nullptr;
+    return make<NameType>("'block-literal'");
+  }
+  return nullptr;
+}
+
+// <source-name> ::= <positive length number> <identifier>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseSourceName(NameState *) {
+  size_t Length = 0;
+  if (parsePositiveInteger(&Length))
+    return nullptr;
+  if (numLeft() < Length || Length == 0)
+    return nullptr;
+  StringView Name(First, First + Length);
+  First += Length;
+  if (Name.startsWith("_GLOBAL__N"))
+    return make<NameType>("(anonymous namespace)");
+  return make<NameType>(Name);
+}
+
+// Operator encodings
+template <typename Derived, typename Alloc>
+const typename AbstractManglingParser<
+    Derived, Alloc>::OperatorInfo AbstractManglingParser<Derived,
+                                                         Alloc>::Ops[] = {
+    // Keep ordered by encoding
+    {"aN", OperatorInfo::Binary, false, Node::Prec::Assign, "operator&="},
+    {"aS", OperatorInfo::Binary, false, Node::Prec::Assign, "operator="},
+    {"aa", OperatorInfo::Binary, false, Node::Prec::AndIf, "operator&&"},
+    {"ad", OperatorInfo::Prefix, false, Node::Prec::Unary, "operator&"},
+    {"an", OperatorInfo::Binary, false, Node::Prec::And, "operator&"},
+    {"at", OperatorInfo::OfIdOp, /*Type*/ true, Node::Prec::Unary, "alignof "},
+    {"aw", OperatorInfo::NameOnly, false, Node::Prec::Primary,
+     "operator co_await"},
+    {"az", OperatorInfo::OfIdOp, /*Type*/ false, Node::Prec::Unary, "alignof "},
+    {"cc", OperatorInfo::NamedCast, false, Node::Prec::Postfix, "const_cast"},
+    {"cl", OperatorInfo::Call, false, Node::Prec::Postfix, "operator()"},
+    {"cm", OperatorInfo::Binary, false, Node::Prec::Comma, "operator,"},
+    {"co", OperatorInfo::Prefix, false, Node::Prec::Unary, "operator~"},
+    {"cv", OperatorInfo::CCast, false, Node::Prec::Cast, "operator"}, // C Cast
+    {"dV", OperatorInfo::Binary, false, Node::Prec::Assign, "operator/="},
+    {"da", OperatorInfo::Del, /*Ary*/ true, Node::Prec::Unary,
+     "operator delete[]"},
+    {"dc", OperatorInfo::NamedCast, false, Node::Prec::Postfix, "dynamic_cast"},
+    {"de", OperatorInfo::Prefix, false, Node::Prec::Unary, "operator*"},
+    {"dl", OperatorInfo::Del, /*Ary*/ false, Node::Prec::Unary,
+     "operator delete"},
+    {"ds", OperatorInfo::Member, /*Named*/ false, Node::Prec::PtrMem,
+     "operator.*"},
+    {"dt", OperatorInfo::Member, /*Named*/ false, Node::Prec::Postfix,
+     "operator."},
+    {"dv", OperatorInfo::Binary, false, Node::Prec::Assign, "operator/"},
+    {"eO", OperatorInfo::Binary, false, Node::Prec::Assign, "operator^="},
+    {"eo", OperatorInfo::Binary, false, Node::Prec::Xor, "operator^"},
+    {"eq", OperatorInfo::Binary, false, Node::Prec::Equality, "operator=="},
+    {"ge", OperatorInfo::Binary, false, Node::Prec::Relational, "operator>="},
+    {"gt", OperatorInfo::Binary, false, Node::Prec::Relational, "operator>"},
+    {"ix", OperatorInfo::Array, false, Node::Prec::Postfix, "operator[]"},
+    {"lS", OperatorInfo::Binary, false, Node::Prec::Assign, "operator<<="},
+    {"le", OperatorInfo::Binary, false, Node::Prec::Relational, "operator<="},
+    {"ls", OperatorInfo::Binary, false, Node::Prec::Shift, "operator<<"},
+    {"lt", OperatorInfo::Binary, false, Node::Prec::Relational, "operator<"},
+    {"mI", OperatorInfo::Binary, false, Node::Prec::Assign, "operator-="},
+    {"mL", OperatorInfo::Binary, false, Node::Prec::Assign, "operator*="},
+    {"mi", OperatorInfo::Binary, false, Node::Prec::Additive, "operator-"},
+    {"ml", OperatorInfo::Binary, false, Node::Prec::Multiplicative,
+     "operator*"},
+    {"mm", OperatorInfo::Postfix, false, Node::Prec::Postfix, "operator--"},
+    {"na", OperatorInfo::New, /*Ary*/ true, Node::Prec::Unary,
+     "operator new[]"},
+    {"ne", OperatorInfo::Binary, false, Node::Prec::Equality, "operator!="},
+    {"ng", OperatorInfo::Prefix, false, Node::Prec::Unary, "operator-"},
+    {"nt", OperatorInfo::Prefix, false, Node::Prec::Unary, "operator!"},
+    {"nw", OperatorInfo::New, /*Ary*/ false, Node::Prec::Unary, "operator new"},
+    {"oR", OperatorInfo::Binary, false, Node::Prec::Assign, "operator|="},
+    {"oo", OperatorInfo::Binary, false, Node::Prec::OrIf, "operator||"},
+    {"or", OperatorInfo::Binary, false, Node::Prec::Ior, "operator|"},
+    {"pL", OperatorInfo::Binary, false, Node::Prec::Assign, "operator+="},
+    {"pl", OperatorInfo::Binary, false, Node::Prec::Additive, "operator+"},
+    {"pm", OperatorInfo::Member, /*Named*/ false, Node::Prec::PtrMem,
+     "operator->*"},
+    {"pp", OperatorInfo::Postfix, false, Node::Prec::Postfix, "operator++"},
+    {"ps", OperatorInfo::Prefix, false, Node::Prec::Unary, "operator+"},
+    {"pt", OperatorInfo::Member, /*Named*/ true, Node::Prec::Postfix,
+     "operator->"},
+    {"qu", OperatorInfo::Conditional, false, Node::Prec::Conditional,
+     "operator?"},
+    {"rM", OperatorInfo::Binary, false, Node::Prec::Assign, "operator%="},
+    {"rS", OperatorInfo::Binary, false, Node::Prec::Assign, "operator>>="},
+    {"rc", OperatorInfo::NamedCast, false, Node::Prec::Postfix,
+     "reinterpret_cast"},
+    {"rm", OperatorInfo::Binary, false, Node::Prec::Multiplicative,
+     "operator%"},
+    {"rs", OperatorInfo::Binary, false, Node::Prec::Shift, "operator>>"},
+    {"sc", OperatorInfo::NamedCast, false, Node::Prec::Postfix, "static_cast"},
+    {"ss", OperatorInfo::Binary, false, Node::Prec::Spaceship, "operator<=>"},
+    {"st", OperatorInfo::OfIdOp, /*Type*/ true, Node::Prec::Unary, "sizeof "},
+    {"sz", OperatorInfo::OfIdOp, /*Type*/ false, Node::Prec::Unary, "sizeof "},
+    {"te", OperatorInfo::OfIdOp, /*Type*/ false, Node::Prec::Postfix,
+     "typeid "},
+    {"ti", OperatorInfo::OfIdOp, /*Type*/ true, Node::Prec::Postfix, "typeid "},
+};
+template <typename Derived, typename Alloc>
+const size_t AbstractManglingParser<Derived, Alloc>::NumOps = sizeof(Ops) /
+                                                              sizeof(Ops[0]);
+
+// If the next 2 chars are an operator encoding, consume them and return their
+// OperatorInfo.  Otherwise return nullptr.
+template <typename Derived, typename Alloc>
+const typename AbstractManglingParser<Derived, Alloc>::OperatorInfo *
+AbstractManglingParser<Derived, Alloc>::parseOperatorEncoding() {
+  if (numLeft() < 2)
+    return nullptr;
+
+  // We can't use lower_bound as that can link to symbols in the C++ library,
+  // and this must remain independant of that.
+  size_t lower = 0u, upper = NumOps - 1; // Inclusive bounds.
+  while (upper != lower) {
+    size_t middle = (upper + lower) / 2;
+    if (Ops[middle] < First)
+      lower = middle + 1;
+    else
+      upper = middle;
+  }
+  if (Ops[lower] != First)
+    return nullptr;
+
+  First += 2;
+  return &Ops[lower];
+}
+
+//   <operator-name> ::= See parseOperatorEncoding()
+//                   ::= li <source-name>  # operator ""
+//                   ::= v <digit> <source-name>  # vendor extended operator
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseOperatorName(NameState *State) {
+  if (const auto *Op = parseOperatorEncoding()) {
+    if (Op->getKind() == OperatorInfo::CCast) {
+      //              ::= cv <type>    # (cast)
+      ScopedOverride<bool> SaveTemplate(TryToParseTemplateArgs, false);
+      // If we're parsing an encoding, State != nullptr and the conversion
+      // operators' <type> could have a <template-param> that refers to some
+      // <template-arg>s further ahead in the mangled name.
+      ScopedOverride<bool> SavePermit(PermitForwardTemplateReferences,
+                                      PermitForwardTemplateReferences ||
+                                          State != nullptr);
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      if (State) State->CtorDtorConversion = true;
+      return make<ConversionOperatorType>(Ty);
+    }
+
+    if (Op->getKind() >= OperatorInfo::Unnameable)
+      /* Not a nameable operator.  */
+      return nullptr;
+    if (Op->getKind() == OperatorInfo::Member && !Op->getFlag())
+      /* Not a nameable MemberExpr */
+      return nullptr;
+
+    return make<NameType>(Op->getName());
+  }
+
+  if (consumeIf("li")) {
+    //                   ::= li <source-name>  # operator ""
+    Node *SN = getDerived().parseSourceName(State);
+    if (SN == nullptr)
+      return nullptr;
+    return make<LiteralOperator>(SN);
+  }
+
+  if (consumeIf('v')) {
+    // ::= v <digit> <source-name>        # vendor extended operator
+    if (look() >= '0' && look() <= '9') {
+      First++;
+      Node *SN = getDerived().parseSourceName(State);
+      if (SN == nullptr)
+        return nullptr;
+      return make<ConversionOperatorType>(SN);
+    }
+    return nullptr;
+  }
+
+  return nullptr;
+}
+
+// <ctor-dtor-name> ::= C1  # complete object constructor
+//                  ::= C2  # base object constructor
+//                  ::= C3  # complete object allocating constructor
+//   extension      ::= C4  # gcc old-style "[unified]" constructor
+//   extension      ::= C5  # the COMDAT used for ctors
+//                  ::= D0  # deleting destructor
+//                  ::= D1  # complete object destructor
+//                  ::= D2  # base object destructor
+//   extension      ::= D4  # gcc old-style "[unified]" destructor
+//   extension      ::= D5  # the COMDAT used for dtors
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseCtorDtorName(Node *&SoFar,
+                                                          NameState *State) {
+  if (SoFar->getKind() == Node::KSpecialSubstitution) {
+    // Expand the special substitution.
+    SoFar = make<ExpandedSpecialSubstitution>(
+        static_cast<SpecialSubstitution *>(SoFar));
+    if (!SoFar)
+      return nullptr;
+  }
+
+  if (consumeIf('C')) {
+    bool IsInherited = consumeIf('I');
+    if (look() != '1' && look() != '2' && look() != '3' && look() != '4' &&
+        look() != '5')
+      return nullptr;
+    int Variant = look() - '0';
+    ++First;
+    if (State) State->CtorDtorConversion = true;
+    if (IsInherited) {
+      if (getDerived().parseName(State) == nullptr)
+        return nullptr;
+    }
+    return make<CtorDtorName>(SoFar, /*IsDtor=*/false, Variant);
+  }
+
+  if (look() == 'D' && (look(1) == '0' || look(1) == '1' || look(1) == '2' ||
+                        look(1) == '4' || look(1) == '5')) {
+    int Variant = look(1) - '0';
+    First += 2;
+    if (State) State->CtorDtorConversion = true;
+    return make<CtorDtorName>(SoFar, /*IsDtor=*/true, Variant);
+  }
+
+  return nullptr;
+}
+
+// <nested-name> ::= N [<CV-Qualifiers>] [<ref-qualifier>] <prefix>
+// 			<unqualified-name> E
+//               ::= N [<CV-Qualifiers>] [<ref-qualifier>] <template-prefix>
+//               	<template-args> E
+//
+// <prefix> ::= <prefix> <unqualified-name>
+//          ::= <template-prefix> <template-args>
+//          ::= <template-param>
+//          ::= <decltype>
+//          ::= # empty
+//          ::= <substitution>
+//          ::= <prefix> <data-member-prefix>
+// [*] extension
+//
+// <data-member-prefix> := <member source-name> [<template-args>] M
+//
+// <template-prefix> ::= <prefix> <template unqualified-name>
+//                   ::= <template-param>
+//                   ::= <substitution>
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseNestedName(NameState *State) {
+  if (!consumeIf('N'))
+    return nullptr;
+
+  Qualifiers CVTmp = parseCVQualifiers();
+  if (State) State->CVQualifiers = CVTmp;
+
+  if (consumeIf('O')) {
+    if (State) State->ReferenceQualifier = FrefQualRValue;
+  } else if (consumeIf('R')) {
+    if (State) State->ReferenceQualifier = FrefQualLValue;
+  } else {
+    if (State) State->ReferenceQualifier = FrefQualNone;
+  }
+
+  Node *SoFar = nullptr;
+  while (!consumeIf('E')) {
+    if (State)
+      // Only set end-with-template on the case that does that.
+      State->EndsWithTemplateArgs = false;
+
+    if (look() == 'T') {
+      //          ::= <template-param>
+      if (SoFar != nullptr)
+        return nullptr; // Cannot have a prefix.
+      SoFar = getDerived().parseTemplateParam();
+    } else if (look() == 'I') {
+      //          ::= <template-prefix> <template-args>
+      if (SoFar == nullptr)
+        return nullptr; // Must have a prefix.
+      Node *TA = getDerived().parseTemplateArgs(State != nullptr);
+      if (TA == nullptr)
+        return nullptr;
+      if (SoFar->getKind() == Node::KNameWithTemplateArgs)
+        // Semantically <template-args> <template-args> cannot be generated by a
+        // C++ entity.  There will always be [something like] a name between
+        // them.
+        return nullptr;
+      if (State)
+        State->EndsWithTemplateArgs = true;
+      SoFar = make<NameWithTemplateArgs>(SoFar, TA);
+    } else if (look() == 'D' && (look(1) == 't' || look(1) == 'T')) {
+      //          ::= <decltype>
+      if (SoFar != nullptr)
+        return nullptr; // Cannot have a prefix.
+      SoFar = getDerived().parseDecltype();
+    } else {
+      ModuleName *Module = nullptr;
+
+      if (look() == 'S') {
+        //          ::= <substitution>
+        Node *S = nullptr;
+        if (look(1) == 't') {
+          First += 2;
+          S = make<NameType>("std");
+        } else {
+          S = getDerived().parseSubstitution();
+        }
+        if (!S)
+          return nullptr;
+        if (S->getKind() == Node::KModuleName) {
+          Module = static_cast<ModuleName *>(S);
+        } else if (SoFar != nullptr) {
+          return nullptr; // Cannot have a prefix.
+        } else {
+          SoFar = S;
+          continue; // Do not push a new substitution.
+        }
+      }
+
+      //          ::= [<prefix>] <unqualified-name>
+      SoFar = getDerived().parseUnqualifiedName(State, SoFar, Module);
+    }
+
+    if (SoFar == nullptr)
+      return nullptr;
+    Subs.push_back(SoFar);
+
+    // No longer used.
+    // <data-member-prefix> := <member source-name> [<template-args>] M
+    consumeIf('M');
+  }
+
+  if (SoFar == nullptr || Subs.empty())
+    return nullptr;
+
+  Subs.pop_back();
+  return SoFar;
+}
+
+// <simple-id> ::= <source-name> [ <template-args> ]
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseSimpleId() {
+  Node *SN = getDerived().parseSourceName(/*NameState=*/nullptr);
+  if (SN == nullptr)
+    return nullptr;
+  if (look() == 'I') {
+    Node *TA = getDerived().parseTemplateArgs();
+    if (TA == nullptr)
+      return nullptr;
+    return make<NameWithTemplateArgs>(SN, TA);
+  }
+  return SN;
+}
+
+// <destructor-name> ::= <unresolved-type>  # e.g., ~T or ~decltype(f())
+//                   ::= <simple-id>        # e.g., ~A<2*N>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseDestructorName() {
+  Node *Result;
+  if (std::isdigit(look()))
+    Result = getDerived().parseSimpleId();
+  else
+    Result = getDerived().parseUnresolvedType();
+  if (Result == nullptr)
+    return nullptr;
+  return make<DtorName>(Result);
+}
+
+// <unresolved-type> ::= <template-param>
+//                   ::= <decltype>
+//                   ::= <substitution>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseUnresolvedType() {
+  if (look() == 'T') {
+    Node *TP = getDerived().parseTemplateParam();
+    if (TP == nullptr)
+      return nullptr;
+    Subs.push_back(TP);
+    return TP;
+  }
+  if (look() == 'D') {
+    Node *DT = getDerived().parseDecltype();
+    if (DT == nullptr)
+      return nullptr;
+    Subs.push_back(DT);
+    return DT;
+  }
+  return getDerived().parseSubstitution();
+}
+
+// <base-unresolved-name> ::= <simple-id>                                # unresolved name
+//          extension     ::= <operator-name>                            # unresolved operator-function-id
+//          extension     ::= <operator-name> <template-args>            # unresolved operator template-id
+//                        ::= on <operator-name>                         # unresolved operator-function-id
+//                        ::= on <operator-name> <template-args>         # unresolved operator template-id
+//                        ::= dn <destructor-name>                       # destructor or pseudo-destructor;
+//                                                                         # e.g. ~X or ~X<N-1>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseBaseUnresolvedName() {
+  if (std::isdigit(look()))
+    return getDerived().parseSimpleId();
+
+  if (consumeIf("dn"))
+    return getDerived().parseDestructorName();
+
+  consumeIf("on");
+
+  Node *Oper = getDerived().parseOperatorName(/*NameState=*/nullptr);
+  if (Oper == nullptr)
+    return nullptr;
+  if (look() == 'I') {
+    Node *TA = getDerived().parseTemplateArgs();
+    if (TA == nullptr)
+      return nullptr;
+    return make<NameWithTemplateArgs>(Oper, TA);
+  }
+  return Oper;
+}
+
+// <unresolved-name>
+//  extension        ::= srN <unresolved-type> [<template-args>] <unresolved-qualifier-level>* E <base-unresolved-name>
+//                   ::= [gs] <base-unresolved-name>                     # x or (with "gs") ::x
+//                   ::= [gs] sr <unresolved-qualifier-level>+ E <base-unresolved-name>
+//                                                                       # A::x, N::y, A<T>::z; "gs" means leading "::"
+// [gs] has been parsed by caller.
+//                   ::= sr <unresolved-type> <base-unresolved-name>     # T::x / decltype(p)::x
+//  extension        ::= sr <unresolved-type> <template-args> <base-unresolved-name>
+//                                                                       # T::N::x /decltype(p)::N::x
+//  (ignored)        ::= srN <unresolved-type>  <unresolved-qualifier-level>+ E <base-unresolved-name>
+//
+// <unresolved-qualifier-level> ::= <simple-id>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseUnresolvedName(bool Global) {
+  Node *SoFar = nullptr;
+
+  // srN <unresolved-type> [<template-args>] <unresolved-qualifier-level>* E <base-unresolved-name>
+  // srN <unresolved-type>                   <unresolved-qualifier-level>+ E <base-unresolved-name>
+  if (consumeIf("srN")) {
+    SoFar = getDerived().parseUnresolvedType();
+    if (SoFar == nullptr)
+      return nullptr;
+
+    if (look() == 'I') {
+      Node *TA = getDerived().parseTemplateArgs();
+      if (TA == nullptr)
+        return nullptr;
+      SoFar = make<NameWithTemplateArgs>(SoFar, TA);
+      if (!SoFar)
+        return nullptr;
+    }
+
+    while (!consumeIf('E')) {
+      Node *Qual = getDerived().parseSimpleId();
+      if (Qual == nullptr)
+        return nullptr;
+      SoFar = make<QualifiedName>(SoFar, Qual);
+      if (!SoFar)
+        return nullptr;
+    }
+
+    Node *Base = getDerived().parseBaseUnresolvedName();
+    if (Base == nullptr)
+      return nullptr;
+    return make<QualifiedName>(SoFar, Base);
+  }
+
+  // [gs] <base-unresolved-name>                     # x or (with "gs") ::x
+  if (!consumeIf("sr")) {
+    SoFar = getDerived().parseBaseUnresolvedName();
+    if (SoFar == nullptr)
+      return nullptr;
+    if (Global)
+      SoFar = make<GlobalQualifiedName>(SoFar);
+    return SoFar;
+  }
+
+  // [gs] sr <unresolved-qualifier-level>+ E   <base-unresolved-name>
+  if (std::isdigit(look())) {
+    do {
+      Node *Qual = getDerived().parseSimpleId();
+      if (Qual == nullptr)
+        return nullptr;
+      if (SoFar)
+        SoFar = make<QualifiedName>(SoFar, Qual);
+      else if (Global)
+        SoFar = make<GlobalQualifiedName>(Qual);
+      else
+        SoFar = Qual;
+      if (!SoFar)
+        return nullptr;
+    } while (!consumeIf('E'));
+  }
+  //      sr <unresolved-type>                 <base-unresolved-name>
+  //      sr <unresolved-type> <template-args> <base-unresolved-name>
+  else {
+    SoFar = getDerived().parseUnresolvedType();
+    if (SoFar == nullptr)
+      return nullptr;
+
+    if (look() == 'I') {
+      Node *TA = getDerived().parseTemplateArgs();
+      if (TA == nullptr)
+        return nullptr;
+      SoFar = make<NameWithTemplateArgs>(SoFar, TA);
+      if (!SoFar)
+        return nullptr;
+    }
+  }
+
+  assert(SoFar != nullptr);
+
+  Node *Base = getDerived().parseBaseUnresolvedName();
+  if (Base == nullptr)
+    return nullptr;
+  return make<QualifiedName>(SoFar, Base);
+}
+
+// <abi-tags> ::= <abi-tag> [<abi-tags>]
+// <abi-tag> ::= B <source-name>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseAbiTags(Node *N) {
+  while (consumeIf('B')) {
+    StringView SN = parseBareSourceName();
+    if (SN.empty())
+      return nullptr;
+    N = make<AbiTagAttr>(N, SN);
+    if (!N)
+      return nullptr;
+  }
+  return N;
+}
+
+// <number> ::= [n] <non-negative decimal integer>
+template <typename Alloc, typename Derived>
+StringView
+AbstractManglingParser<Alloc, Derived>::parseNumber(bool AllowNegative) {
+  const char *Tmp = First;
+  if (AllowNegative)
+    consumeIf('n');
+  if (numLeft() == 0 || !std::isdigit(*First))
+    return StringView();
+  while (numLeft() != 0 && std::isdigit(*First))
+    ++First;
+  return StringView(Tmp, First);
+}
+
+// <positive length number> ::= [0-9]*
+template <typename Alloc, typename Derived>
+bool AbstractManglingParser<Alloc, Derived>::parsePositiveInteger(size_t *Out) {
+  *Out = 0;
+  if (look() < '0' || look() > '9')
+    return true;
+  while (look() >= '0' && look() <= '9') {
+    *Out *= 10;
+    *Out += static_cast<size_t>(consume() - '0');
+  }
+  return false;
+}
+
+template <typename Alloc, typename Derived>
+StringView AbstractManglingParser<Alloc, Derived>::parseBareSourceName() {
+  size_t Int = 0;
+  if (parsePositiveInteger(&Int) || numLeft() < Int)
+    return StringView();
+  StringView R(First, First + Int);
+  First += Int;
+  return R;
+}
+
+// <function-type> ::= [<CV-qualifiers>] [<exception-spec>] [Dx] F [Y] <bare-function-type> [<ref-qualifier>] E
+//
+// <exception-spec> ::= Do                # non-throwing exception-specification (e.g., noexcept, throw())
+//                  ::= DO <expression> E # computed (instantiation-dependent) noexcept
+//                  ::= Dw <type>+ E      # dynamic exception specification with instantiation-dependent types
+//
+// <ref-qualifier> ::= R                   # & ref-qualifier
+// <ref-qualifier> ::= O                   # && ref-qualifier
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseFunctionType() {
+  Qualifiers CVQuals = parseCVQualifiers();
+
+  Node *ExceptionSpec = nullptr;
+  if (consumeIf("Do")) {
+    ExceptionSpec = make<NameType>("noexcept");
+    if (!ExceptionSpec)
+      return nullptr;
+  } else if (consumeIf("DO")) {
+    Node *E = getDerived().parseExpr();
+    if (E == nullptr || !consumeIf('E'))
+      return nullptr;
+    ExceptionSpec = make<NoexceptSpec>(E);
+    if (!ExceptionSpec)
+      return nullptr;
+  } else if (consumeIf("Dw")) {
+    size_t SpecsBegin = Names.size();
+    while (!consumeIf('E')) {
+      Node *T = getDerived().parseType();
+      if (T == nullptr)
+        return nullptr;
+      Names.push_back(T);
+    }
+    ExceptionSpec =
+      make<DynamicExceptionSpec>(popTrailingNodeArray(SpecsBegin));
+    if (!ExceptionSpec)
+      return nullptr;
+  }
+
+  consumeIf("Dx"); // transaction safe
+
+  if (!consumeIf('F'))
+    return nullptr;
+  consumeIf('Y'); // extern "C"
+  Node *ReturnType = getDerived().parseType();
+  if (ReturnType == nullptr)
+    return nullptr;
+
+  FunctionRefQual ReferenceQualifier = FrefQualNone;
+  size_t ParamsBegin = Names.size();
+  while (true) {
+    if (consumeIf('E'))
+      break;
+    if (consumeIf('v'))
+      continue;
+    if (consumeIf("RE")) {
+      ReferenceQualifier = FrefQualLValue;
+      break;
+    }
+    if (consumeIf("OE")) {
+      ReferenceQualifier = FrefQualRValue;
+      break;
+    }
+    Node *T = getDerived().parseType();
+    if (T == nullptr)
+      return nullptr;
+    Names.push_back(T);
+  }
+
+  NodeArray Params = popTrailingNodeArray(ParamsBegin);
+  return make<FunctionType>(ReturnType, Params, CVQuals,
+                            ReferenceQualifier, ExceptionSpec);
+}
+
+// extension:
+// <vector-type>           ::= Dv <positive dimension number> _ <extended element type>
+//                         ::= Dv [<dimension expression>] _ <element type>
+// <extended element type> ::= <element type>
+//                         ::= p # AltiVec vector pixel
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseVectorType() {
+  if (!consumeIf("Dv"))
+    return nullptr;
+  if (look() >= '1' && look() <= '9') {
+    Node *DimensionNumber = make<NameType>(parseNumber());
+    if (!DimensionNumber)
+      return nullptr;
+    if (!consumeIf('_'))
+      return nullptr;
+    if (consumeIf('p'))
+      return make<PixelVectorType>(DimensionNumber);
+    Node *ElemType = getDerived().parseType();
+    if (ElemType == nullptr)
+      return nullptr;
+    return make<VectorType>(ElemType, DimensionNumber);
+  }
+
+  if (!consumeIf('_')) {
+    Node *DimExpr = getDerived().parseExpr();
+    if (!DimExpr)
+      return nullptr;
+    if (!consumeIf('_'))
+      return nullptr;
+    Node *ElemType = getDerived().parseType();
+    if (!ElemType)
+      return nullptr;
+    return make<VectorType>(ElemType, DimExpr);
+  }
+  Node *ElemType = getDerived().parseType();
+  if (!ElemType)
+    return nullptr;
+  return make<VectorType>(ElemType, /*Dimension=*/nullptr);
+}
+
+// <decltype>  ::= Dt <expression> E  # decltype of an id-expression or class member access (C++0x)
+//             ::= DT <expression> E  # decltype of an expression (C++0x)
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseDecltype() {
+  if (!consumeIf('D'))
+    return nullptr;
+  if (!consumeIf('t') && !consumeIf('T'))
+    return nullptr;
+  Node *E = getDerived().parseExpr();
+  if (E == nullptr)
+    return nullptr;
+  if (!consumeIf('E'))
+    return nullptr;
+  return make<EnclosingExpr>("decltype", E);
+}
+
+// <array-type> ::= A <positive dimension number> _ <element type>
+//              ::= A [<dimension expression>] _ <element type>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseArrayType() {
+  if (!consumeIf('A'))
+    return nullptr;
+
+  Node *Dimension = nullptr;
+
+  if (std::isdigit(look())) {
+    Dimension = make<NameType>(parseNumber());
+    if (!Dimension)
+      return nullptr;
+    if (!consumeIf('_'))
+      return nullptr;
+  } else if (!consumeIf('_')) {
+    Node *DimExpr = getDerived().parseExpr();
+    if (DimExpr == nullptr)
+      return nullptr;
+    if (!consumeIf('_'))
+      return nullptr;
+    Dimension = DimExpr;
+  }
+
+  Node *Ty = getDerived().parseType();
+  if (Ty == nullptr)
+    return nullptr;
+  return make<ArrayType>(Ty, Dimension);
+}
+
+// <pointer-to-member-type> ::= M <class type> <member type>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parsePointerToMemberType() {
+  if (!consumeIf('M'))
+    return nullptr;
+  Node *ClassType = getDerived().parseType();
+  if (ClassType == nullptr)
+    return nullptr;
+  Node *MemberType = getDerived().parseType();
+  if (MemberType == nullptr)
+    return nullptr;
+  return make<PointerToMemberType>(ClassType, MemberType);
+}
+
+// <class-enum-type> ::= <name>     # non-dependent type name, dependent type name, or dependent typename-specifier
+//                   ::= Ts <name>  # dependent elaborated type specifier using 'struct' or 'class'
+//                   ::= Tu <name>  # dependent elaborated type specifier using 'union'
+//                   ::= Te <name>  # dependent elaborated type specifier using 'enum'
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseClassEnumType() {
+  StringView ElabSpef;
+  if (consumeIf("Ts"))
+    ElabSpef = "struct";
+  else if (consumeIf("Tu"))
+    ElabSpef = "union";
+  else if (consumeIf("Te"))
+    ElabSpef = "enum";
+
+  Node *Name = getDerived().parseName();
+  if (Name == nullptr)
+    return nullptr;
+
+  if (!ElabSpef.empty())
+    return make<ElaboratedTypeSpefType>(ElabSpef, Name);
+
+  return Name;
+}
+
+// <qualified-type>     ::= <qualifiers> <type>
+// <qualifiers> ::= <extended-qualifier>* <CV-qualifiers>
+// <extended-qualifier> ::= U <source-name> [<template-args>] # vendor extended type qualifier
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseQualifiedType() {
+  if (consumeIf('U')) {
+    StringView Qual = parseBareSourceName();
+    if (Qual.empty())
+      return nullptr;
+
+    // extension            ::= U <objc-name> <objc-type>  # objc-type<identifier>
+    if (Qual.startsWith("objcproto")) {
+      StringView ProtoSourceName = Qual.dropFront(std::strlen("objcproto"));
+      StringView Proto;
+      {
+        ScopedOverride<const char *> SaveFirst(First, ProtoSourceName.begin()),
+            SaveLast(Last, ProtoSourceName.end());
+        Proto = parseBareSourceName();
+      }
+      if (Proto.empty())
+        return nullptr;
+      Node *Child = getDerived().parseQualifiedType();
+      if (Child == nullptr)
+        return nullptr;
+      return make<ObjCProtoName>(Child, Proto);
+    }
+
+    Node *TA = nullptr;
+    if (look() == 'I') {
+      TA = getDerived().parseTemplateArgs();
+      if (TA == nullptr)
+        return nullptr;
+    }
+
+    Node *Child = getDerived().parseQualifiedType();
+    if (Child == nullptr)
+      return nullptr;
+    return make<VendorExtQualType>(Child, Qual, TA);
+  }
+
+  Qualifiers Quals = parseCVQualifiers();
+  Node *Ty = getDerived().parseType();
+  if (Ty == nullptr)
+    return nullptr;
+  if (Quals != QualNone)
+    Ty = make<QualType>(Ty, Quals);
+  return Ty;
+}
+
+// <type>      ::= <builtin-type>
+//             ::= <qualified-type>
+//             ::= <function-type>
+//             ::= <class-enum-type>
+//             ::= <array-type>
+//             ::= <pointer-to-member-type>
+//             ::= <template-param>
+//             ::= <template-template-param> <template-args>
+//             ::= <decltype>
+//             ::= P <type>        # pointer
+//             ::= R <type>        # l-value reference
+//             ::= O <type>        # r-value reference (C++11)
+//             ::= C <type>        # complex pair (C99)
+//             ::= G <type>        # imaginary (C99)
+//             ::= <substitution>  # See Compression below
+// extension   ::= U <objc-name> <objc-type>  # objc-type<identifier>
+// extension   ::= <vector-type> # <vector-type> starts with Dv
+//
+// <objc-name> ::= <k0 number> objcproto <k1 number> <identifier>  # k0 = 9 + <number of digits in k1> + k1
+// <objc-type> ::= <source-name>  # PU<11+>objcproto 11objc_object<source-name> 11objc_object -> id<source-name>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseType() {
+  Node *Result = nullptr;
+
+  switch (look()) {
+  //             ::= <qualified-type>
+  case 'r':
+  case 'V':
+  case 'K': {
+    unsigned AfterQuals = 0;
+    if (look(AfterQuals) == 'r') ++AfterQuals;
+    if (look(AfterQuals) == 'V') ++AfterQuals;
+    if (look(AfterQuals) == 'K') ++AfterQuals;
+
+    if (look(AfterQuals) == 'F' ||
+        (look(AfterQuals) == 'D' &&
+         (look(AfterQuals + 1) == 'o' || look(AfterQuals + 1) == 'O' ||
+          look(AfterQuals + 1) == 'w' || look(AfterQuals + 1) == 'x'))) {
+      Result = getDerived().parseFunctionType();
+      break;
+    }
+    DEMANGLE_FALLTHROUGH;
+  }
+  case 'U': {
+    Result = getDerived().parseQualifiedType();
+    break;
+  }
+  // <builtin-type> ::= v    # void
+  case 'v':
+    ++First;
+    return make<NameType>("void");
+  //                ::= w    # wchar_t
+  case 'w':
+    ++First;
+    return make<NameType>("wchar_t");
+  //                ::= b    # bool
+  case 'b':
+    ++First;
+    return make<NameType>("bool");
+  //                ::= c    # char
+  case 'c':
+    ++First;
+    return make<NameType>("char");
+  //                ::= a    # signed char
+  case 'a':
+    ++First;
+    return make<NameType>("signed char");
+  //                ::= h    # unsigned char
+  case 'h':
+    ++First;
+    return make<NameType>("unsigned char");
+  //                ::= s    # short
+  case 's':
+    ++First;
+    return make<NameType>("short");
+  //                ::= t    # unsigned short
+  case 't':
+    ++First;
+    return make<NameType>("unsigned short");
+  //                ::= i    # int
+  case 'i':
+    ++First;
+    return make<NameType>("int");
+  //                ::= j    # unsigned int
+  case 'j':
+    ++First;
+    return make<NameType>("unsigned int");
+  //                ::= l    # long
+  case 'l':
+    ++First;
+    return make<NameType>("long");
+  //                ::= m    # unsigned long
+  case 'm':
+    ++First;
+    return make<NameType>("unsigned long");
+  //                ::= x    # long long, __int64
+  case 'x':
+    ++First;
+    return make<NameType>("long long");
+  //                ::= y    # unsigned long long, __int64
+  case 'y':
+    ++First;
+    return make<NameType>("unsigned long long");
+  //                ::= n    # __int128
+  case 'n':
+    ++First;
+    return make<NameType>("__int128");
+  //                ::= o    # unsigned __int128
+  case 'o':
+    ++First;
+    return make<NameType>("unsigned __int128");
+  //                ::= f    # float
+  case 'f':
+    ++First;
+    return make<NameType>("float");
+  //                ::= d    # double
+  case 'd':
+    ++First;
+    return make<NameType>("double");
+  //                ::= e    # long double, __float80
+  case 'e':
+    ++First;
+    return make<NameType>("long double");
+  //                ::= g    # __float128
+  case 'g':
+    ++First;
+    return make<NameType>("__float128");
+  //                ::= z    # ellipsis
+  case 'z':
+    ++First;
+    return make<NameType>("...");
+
+  // <builtin-type> ::= u <source-name>    # vendor extended type
+  case 'u': {
+    ++First;
+    StringView Res = parseBareSourceName();
+    if (Res.empty())
+      return nullptr;
+    // Typically, <builtin-type>s are not considered substitution candidates,
+    // but the exception to that exception is vendor extended types (Itanium C++
+    // ABI 5.9.1).
+    Result = make<NameType>(Res);
+    break;
+  }
+  case 'D':
+    switch (look(1)) {
+    //                ::= Dd   # IEEE 754r decimal floating point (64 bits)
+    case 'd':
+      First += 2;
+      return make<NameType>("decimal64");
+    //                ::= De   # IEEE 754r decimal floating point (128 bits)
+    case 'e':
+      First += 2;
+      return make<NameType>("decimal128");
+    //                ::= Df   # IEEE 754r decimal floating point (32 bits)
+    case 'f':
+      First += 2;
+      return make<NameType>("decimal32");
+    //                ::= Dh   # IEEE 754r half-precision floating point (16 bits)
+    case 'h':
+      First += 2;
+      return make<NameType>("half");
+    //                ::= DF <number> _ # ISO/IEC TS 18661 binary floating point (N bits)
+    case 'F': {
+      First += 2;
+      Node *DimensionNumber = make<NameType>(parseNumber());
+      if (!DimensionNumber)
+        return nullptr;
+      if (!consumeIf('_'))
+        return nullptr;
+      return make<BinaryFPType>(DimensionNumber);
+    }
+    //                ::= DB <number> _                             # C23 signed _BitInt(N)
+    //                ::= DB <instantiation-dependent expression> _ # C23 signed _BitInt(N)
+    //                ::= DU <number> _                             # C23 unsigned _BitInt(N)
+    //                ::= DU <instantiation-dependent expression> _ # C23 unsigned _BitInt(N)
+    case 'B':
+    case 'U': {
+      bool Signed = look(1) == 'B';
+      First += 2;
+      Node *Size = std::isdigit(look()) ? make<NameType>(parseNumber())
+                                        : getDerived().parseExpr();
+      if (!Size)
+        return nullptr;
+      if (!consumeIf('_'))
+        return nullptr;
+      return make<BitIntType>(Size, Signed);
+    }
+    //                ::= Di   # char32_t
+    case 'i':
+      First += 2;
+      return make<NameType>("char32_t");
+    //                ::= Ds   # char16_t
+    case 's':
+      First += 2;
+      return make<NameType>("char16_t");
+    //                ::= Du   # char8_t (C++2a, not yet in the Itanium spec)
+    case 'u':
+      First += 2;
+      return make<NameType>("char8_t");
+    //                ::= Da   # auto (in dependent new-expressions)
+    case 'a':
+      First += 2;
+      return make<NameType>("auto");
+    //                ::= Dc   # decltype(auto)
+    case 'c':
+      First += 2;
+      return make<NameType>("decltype(auto)");
+    //                ::= Dn   # std::nullptr_t (i.e., decltype(nullptr))
+    case 'n':
+      First += 2;
+      return make<NameType>("std::nullptr_t");
+
+    //             ::= <decltype>
+    case 't':
+    case 'T': {
+      Result = getDerived().parseDecltype();
+      break;
+    }
+    // extension   ::= <vector-type> # <vector-type> starts with Dv
+    case 'v': {
+      Result = getDerived().parseVectorType();
+      break;
+    }
+    //           ::= Dp <type>       # pack expansion (C++0x)
+    case 'p': {
+      First += 2;
+      Node *Child = getDerived().parseType();
+      if (!Child)
+        return nullptr;
+      Result = make<ParameterPackExpansion>(Child);
+      break;
+    }
+    // Exception specifier on a function type.
+    case 'o':
+    case 'O':
+    case 'w':
+    // Transaction safe function type.
+    case 'x':
+      Result = getDerived().parseFunctionType();
+      break;
+    }
+    break;
+  //             ::= <function-type>
+  case 'F': {
+    Result = getDerived().parseFunctionType();
+    break;
+  }
+  //             ::= <array-type>
+  case 'A': {
+    Result = getDerived().parseArrayType();
+    break;
+  }
+  //             ::= <pointer-to-member-type>
+  case 'M': {
+    Result = getDerived().parsePointerToMemberType();
+    break;
+  }
+  //             ::= <template-param>
+  case 'T': {
+    // This could be an elaborate type specifier on a <class-enum-type>.
+    if (look(1) == 's' || look(1) == 'u' || look(1) == 'e') {
+      Result = getDerived().parseClassEnumType();
+      break;
+    }
+
+    Result = getDerived().parseTemplateParam();
+    if (Result == nullptr)
+      return nullptr;
+
+    // Result could be either of:
+    //   <type>        ::= <template-param>
+    //   <type>        ::= <template-template-param> <template-args>
+    //
+    //   <template-template-param> ::= <template-param>
+    //                             ::= <substitution>
+    //
+    // If this is followed by some <template-args>, and we're permitted to
+    // parse them, take the second production.
+
+    if (TryToParseTemplateArgs && look() == 'I') {
+      Node *TA = getDerived().parseTemplateArgs();
+      if (TA == nullptr)
+        return nullptr;
+      Result = make<NameWithTemplateArgs>(Result, TA);
+    }
+    break;
+  }
+  //             ::= P <type>        # pointer
+  case 'P': {
+    ++First;
+    Node *Ptr = getDerived().parseType();
+    if (Ptr == nullptr)
+      return nullptr;
+    Result = make<PointerType>(Ptr);
+    break;
+  }
+  //             ::= R <type>        # l-value reference
+  case 'R': {
+    ++First;
+    Node *Ref = getDerived().parseType();
+    if (Ref == nullptr)
+      return nullptr;
+    Result = make<ReferenceType>(Ref, ReferenceKind::LValue);
+    break;
+  }
+  //             ::= O <type>        # r-value reference (C++11)
+  case 'O': {
+    ++First;
+    Node *Ref = getDerived().parseType();
+    if (Ref == nullptr)
+      return nullptr;
+    Result = make<ReferenceType>(Ref, ReferenceKind::RValue);
+    break;
+  }
+  //             ::= C <type>        # complex pair (C99)
+  case 'C': {
+    ++First;
+    Node *P = getDerived().parseType();
+    if (P == nullptr)
+      return nullptr;
+    Result = make<PostfixQualifiedType>(P, " complex");
+    break;
+  }
+  //             ::= G <type>        # imaginary (C99)
+  case 'G': {
+    ++First;
+    Node *P = getDerived().parseType();
+    if (P == nullptr)
+      return P;
+    Result = make<PostfixQualifiedType>(P, " imaginary");
+    break;
+  }
+  //             ::= <substitution>  # See Compression below
+  case 'S': {
+    if (look(1) != 't') {
+      bool IsSubst = false;
+      Result = getDerived().parseUnscopedName(nullptr, &IsSubst);
+      if (!Result)
+        return nullptr;
+
+      // Sub could be either of:
+      //   <type>        ::= <substitution>
+      //   <type>        ::= <template-template-param> <template-args>
+      //
+      //   <template-template-param> ::= <template-param>
+      //                             ::= <substitution>
+      //
+      // If this is followed by some <template-args>, and we're permitted to
+      // parse them, take the second production.
+
+      if (look() == 'I' && (!IsSubst || TryToParseTemplateArgs)) {
+        if (!IsSubst)
+          Subs.push_back(Result);
+        Node *TA = getDerived().parseTemplateArgs();
+        if (TA == nullptr)
+          return nullptr;
+        Result = make<NameWithTemplateArgs>(Result, TA);
+      } else if (IsSubst) {
+        // If all we parsed was a substitution, don't re-insert into the
+        // substitution table.
+        return Result;
+      }
+      break;
+    }
+    DEMANGLE_FALLTHROUGH;
+  }
+  //        ::= <class-enum-type>
+  default: {
+    Result = getDerived().parseClassEnumType();
+    break;
+  }
+  }
+
+  // If we parsed a type, insert it into the substitution table. Note that all
+  // <builtin-type>s and <substitution>s have already bailed out, because they
+  // don't get substitutions.
+  if (Result != nullptr)
+    Subs.push_back(Result);
+  return Result;
+}
+
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parsePrefixExpr(StringView Kind,
+                                                              Node::Prec Prec) {
+  Node *E = getDerived().parseExpr();
+  if (E == nullptr)
+    return nullptr;
+  return make<PrefixExpr>(Kind, E, Prec);
+}
+
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseBinaryExpr(StringView Kind,
+                                                              Node::Prec Prec) {
+  Node *LHS = getDerived().parseExpr();
+  if (LHS == nullptr)
+    return nullptr;
+  Node *RHS = getDerived().parseExpr();
+  if (RHS == nullptr)
+    return nullptr;
+  return make<BinaryExpr>(LHS, Kind, RHS, Prec);
+}
+
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseIntegerLiteral(StringView Lit) {
+  StringView Tmp = parseNumber(true);
+  if (!Tmp.empty() && consumeIf('E'))
+    return make<IntegerLiteral>(Lit, Tmp);
+  return nullptr;
+}
+
+// <CV-Qualifiers> ::= [r] [V] [K]
+template <typename Alloc, typename Derived>
+Qualifiers AbstractManglingParser<Alloc, Derived>::parseCVQualifiers() {
+  Qualifiers CVR = QualNone;
+  if (consumeIf('r'))
+    CVR |= QualRestrict;
+  if (consumeIf('V'))
+    CVR |= QualVolatile;
+  if (consumeIf('K'))
+    CVR |= QualConst;
+  return CVR;
+}
+
+// <function-param> ::= fp <top-level CV-Qualifiers> _                                     # L == 0, first parameter
+//                  ::= fp <top-level CV-Qualifiers> <parameter-2 non-negative number> _   # L == 0, second and later parameters
+//                  ::= fL <L-1 non-negative number> p <top-level CV-Qualifiers> _         # L > 0, first parameter
+//                  ::= fL <L-1 non-negative number> p <top-level CV-Qualifiers> <parameter-2 non-negative number> _   # L > 0, second and later parameters
+//                  ::= fpT      # 'this' expression (not part of standard?)
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseFunctionParam() {
+  if (consumeIf("fpT"))
+    return make<NameType>("this");
+  if (consumeIf("fp")) {
+    parseCVQualifiers();
+    StringView Num = parseNumber();
+    if (!consumeIf('_'))
+      return nullptr;
+    return make<FunctionParam>(Num);
+  }
+  if (consumeIf("fL")) {
+    if (parseNumber().empty())
+      return nullptr;
+    if (!consumeIf('p'))
+      return nullptr;
+    parseCVQualifiers();
+    StringView Num = parseNumber();
+    if (!consumeIf('_'))
+      return nullptr;
+    return make<FunctionParam>(Num);
+  }
+  return nullptr;
+}
+
+// cv <type> <expression>                               # conversion with one argument
+// cv <type> _ <expression>* E                          # conversion with a different number of arguments
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseConversionExpr() {
+  if (!consumeIf("cv"))
+    return nullptr;
+  Node *Ty;
+  {
+    ScopedOverride<bool> SaveTemp(TryToParseTemplateArgs, false);
+    Ty = getDerived().parseType();
+  }
+
+  if (Ty == nullptr)
+    return nullptr;
+
+  if (consumeIf('_')) {
+    size_t ExprsBegin = Names.size();
+    while (!consumeIf('E')) {
+      Node *E = getDerived().parseExpr();
+      if (E == nullptr)
+        return E;
+      Names.push_back(E);
+    }
+    NodeArray Exprs = popTrailingNodeArray(ExprsBegin);
+    return make<ConversionExpr>(Ty, Exprs);
+  }
+
+  Node *E[1] = {getDerived().parseExpr()};
+  if (E[0] == nullptr)
+    return nullptr;
+  return make<ConversionExpr>(Ty, makeNodeArray(E, E + 1));
+}
+
+// <expr-primary> ::= L <type> <value number> E                          # integer literal
+//                ::= L <type> <value float> E                           # floating literal
+//                ::= L <string type> E                                  # string literal
+//                ::= L <nullptr type> E                                 # nullptr literal (i.e., "LDnE")
+//                ::= L <lambda type> E                                  # lambda expression
+// FIXME:         ::= L <type> <real-part float> _ <imag-part float> E   # complex floating point literal (C 2000)
+//                ::= L <mangled-name> E                                 # external name
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseExprPrimary() {
+  if (!consumeIf('L'))
+    return nullptr;
+  switch (look()) {
+  case 'w':
+    ++First;
+    return getDerived().parseIntegerLiteral("wchar_t");
+  case 'b':
+    if (consumeIf("b0E"))
+      return make<BoolExpr>(0);
+    if (consumeIf("b1E"))
+      return make<BoolExpr>(1);
+    return nullptr;
+  case 'c':
+    ++First;
+    return getDerived().parseIntegerLiteral("char");
+  case 'a':
+    ++First;
+    return getDerived().parseIntegerLiteral("signed char");
+  case 'h':
+    ++First;
+    return getDerived().parseIntegerLiteral("unsigned char");
+  case 's':
+    ++First;
+    return getDerived().parseIntegerLiteral("short");
+  case 't':
+    ++First;
+    return getDerived().parseIntegerLiteral("unsigned short");
+  case 'i':
+    ++First;
+    return getDerived().parseIntegerLiteral("");
+  case 'j':
+    ++First;
+    return getDerived().parseIntegerLiteral("u");
+  case 'l':
+    ++First;
+    return getDerived().parseIntegerLiteral("l");
+  case 'm':
+    ++First;
+    return getDerived().parseIntegerLiteral("ul");
+  case 'x':
+    ++First;
+    return getDerived().parseIntegerLiteral("ll");
+  case 'y':
+    ++First;
+    return getDerived().parseIntegerLiteral("ull");
+  case 'n':
+    ++First;
+    return getDerived().parseIntegerLiteral("__int128");
+  case 'o':
+    ++First;
+    return getDerived().parseIntegerLiteral("unsigned __int128");
+  case 'f':
+    ++First;
+    return getDerived().template parseFloatingLiteral<float>();
+  case 'd':
+    ++First;
+    return getDerived().template parseFloatingLiteral<double>();
+  case 'e':
+    ++First;
+#if defined(__powerpc__) || defined(__s390__)
+    // Handle cases where long doubles encoded with e have the same size
+    // and representation as doubles.
+    return getDerived().template parseFloatingLiteral<double>();
+#else
+    return getDerived().template parseFloatingLiteral<long double>();
+#endif
+  case '_':
+    if (consumeIf("_Z")) {
+      Node *R = getDerived().parseEncoding();
+      if (R != nullptr && consumeIf('E'))
+        return R;
+    }
+    return nullptr;
+  case 'A': {
+    Node *T = getDerived().parseType();
+    if (T == nullptr)
+      return nullptr;
+    // FIXME: We need to include the string contents in the mangling.
+    if (consumeIf('E'))
+      return make<StringLiteral>(T);
+    return nullptr;
+  }
+  case 'D':
+    if (consumeIf("Dn") && (consumeIf('0'), consumeIf('E')))
+      return make<NameType>("nullptr");
+    return nullptr;
+  case 'T':
+    // Invalid mangled name per
+    //   http://sourcerytools.com/pipermail/cxx-abi-dev/2011-August/002422.html
+    return nullptr;
+  case 'U': {
+    // FIXME: Should we support LUb... for block literals?
+    if (look(1) != 'l')
+      return nullptr;
+    Node *T = parseUnnamedTypeName(nullptr);
+    if (!T || !consumeIf('E'))
+      return nullptr;
+    return make<LambdaExpr>(T);
+  }
+  default: {
+    // might be named type
+    Node *T = getDerived().parseType();
+    if (T == nullptr)
+      return nullptr;
+    StringView N = parseNumber(/*AllowNegative=*/true);
+    if (N.empty())
+      return nullptr;
+    if (!consumeIf('E'))
+      return nullptr;
+    return make<EnumLiteral>(T, N);
+  }
+  }
+}
+
+// <braced-expression> ::= <expression>
+//                     ::= di <field source-name> <braced-expression>    # .name = expr
+//                     ::= dx <index expression> <braced-expression>     # [expr] = expr
+//                     ::= dX <range begin expression> <range end expression> <braced-expression>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseBracedExpr() {
+  if (look() == 'd') {
+    switch (look(1)) {
+    case 'i': {
+      First += 2;
+      Node *Field = getDerived().parseSourceName(/*NameState=*/nullptr);
+      if (Field == nullptr)
+        return nullptr;
+      Node *Init = getDerived().parseBracedExpr();
+      if (Init == nullptr)
+        return nullptr;
+      return make<BracedExpr>(Field, Init, /*isArray=*/false);
+    }
+    case 'x': {
+      First += 2;
+      Node *Index = getDerived().parseExpr();
+      if (Index == nullptr)
+        return nullptr;
+      Node *Init = getDerived().parseBracedExpr();
+      if (Init == nullptr)
+        return nullptr;
+      return make<BracedExpr>(Index, Init, /*isArray=*/true);
+    }
+    case 'X': {
+      First += 2;
+      Node *RangeBegin = getDerived().parseExpr();
+      if (RangeBegin == nullptr)
+        return nullptr;
+      Node *RangeEnd = getDerived().parseExpr();
+      if (RangeEnd == nullptr)
+        return nullptr;
+      Node *Init = getDerived().parseBracedExpr();
+      if (Init == nullptr)
+        return nullptr;
+      return make<BracedRangeExpr>(RangeBegin, RangeEnd, Init);
+    }
+    }
+  }
+  return getDerived().parseExpr();
+}
+
+// (not yet in the spec)
+// <fold-expr> ::= fL <binary-operator-name> <expression> <expression>
+//             ::= fR <binary-operator-name> <expression> <expression>
+//             ::= fl <binary-operator-name> <expression>
+//             ::= fr <binary-operator-name> <expression>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseFoldExpr() {
+  if (!consumeIf('f'))
+    return nullptr;
+
+  bool IsLeftFold = false, HasInitializer = false;
+  switch (look()) {
+  default:
+    return nullptr;
+  case 'L':
+    IsLeftFold = true;
+    HasInitializer = true;
+    break;
+  case 'R':
+    HasInitializer = true;
+    break;
+  case 'l':
+    IsLeftFold = true;
+    break;
+  case 'r':
+    break;
+  }
+  ++First;
+
+  const auto *Op = parseOperatorEncoding();
+  if (!Op)
+    return nullptr;
+  if (!(Op->getKind() == OperatorInfo::Binary
+        || (Op->getKind() == OperatorInfo::Member
+            && Op->getName().back() == '*')))
+    return nullptr;
+
+  Node *Pack = getDerived().parseExpr();
+  if (Pack == nullptr)
+    return nullptr;
+
+  Node *Init = nullptr;
+  if (HasInitializer) {
+    Init = getDerived().parseExpr();
+    if (Init == nullptr)
+      return nullptr;
+  }
+
+  if (IsLeftFold && Init)
+    std::swap(Pack, Init);
+
+  return make<FoldExpr>(IsLeftFold, Op->getSymbol(), Pack, Init);
+}
+
+// <expression> ::= mc <parameter type> <expr> [<offset number>] E
+//
+// Not yet in the spec: https://github.com/itanium-cxx-abi/cxx-abi/issues/47
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parsePointerToMemberConversionExpr(
+    Node::Prec Prec) {
+  Node *Ty = getDerived().parseType();
+  if (!Ty)
+    return nullptr;
+  Node *Expr = getDerived().parseExpr();
+  if (!Expr)
+    return nullptr;
+  StringView Offset = getDerived().parseNumber(true);
+  if (!consumeIf('E'))
+    return nullptr;
+  return make<PointerToMemberConversionExpr>(Ty, Expr, Offset, Prec);
+}
+
+// <expression> ::= so <referent type> <expr> [<offset number>] <union-selector>* [p] E
+// <union-selector> ::= _ [<number>]
+//
+// Not yet in the spec: https://github.com/itanium-cxx-abi/cxx-abi/issues/47
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseSubobjectExpr() {
+  Node *Ty = getDerived().parseType();
+  if (!Ty)
+    return nullptr;
+  Node *Expr = getDerived().parseExpr();
+  if (!Expr)
+    return nullptr;
+  StringView Offset = getDerived().parseNumber(true);
+  size_t SelectorsBegin = Names.size();
+  while (consumeIf('_')) {
+    Node *Selector = make<NameType>(parseNumber());
+    if (!Selector)
+      return nullptr;
+    Names.push_back(Selector);
+  }
+  bool OnePastTheEnd = consumeIf('p');
+  if (!consumeIf('E'))
+    return nullptr;
+  return make<SubobjectExpr>(
+      Ty, Expr, Offset, popTrailingNodeArray(SelectorsBegin), OnePastTheEnd);
+}
+
+// <expression> ::= <unary operator-name> <expression>
+//              ::= <binary operator-name> <expression> <expression>
+//              ::= <ternary operator-name> <expression> <expression> <expression>
+//              ::= cl <expression>+ E                                   # call
+//              ::= cv <type> <expression>                               # conversion with one argument
+//              ::= cv <type> _ <expression>* E                          # conversion with a different number of arguments
+//              ::= [gs] nw <expression>* _ <type> E                     # new (expr-list) type
+//              ::= [gs] nw <expression>* _ <type> <initializer>         # new (expr-list) type (init)
+//              ::= [gs] na <expression>* _ <type> E                     # new[] (expr-list) type
+//              ::= [gs] na <expression>* _ <type> <initializer>         # new[] (expr-list) type (init)
+//              ::= [gs] dl <expression>                                 # delete expression
+//              ::= [gs] da <expression>                                 # delete[] expression
+//              ::= pp_ <expression>                                     # prefix ++
+//              ::= mm_ <expression>                                     # prefix --
+//              ::= ti <type>                                            # typeid (type)
+//              ::= te <expression>                                      # typeid (expression)
+//              ::= dc <type> <expression>                               # dynamic_cast<type> (expression)
+//              ::= sc <type> <expression>                               # static_cast<type> (expression)
+//              ::= cc <type> <expression>                               # const_cast<type> (expression)
+//              ::= rc <type> <expression>                               # reinterpret_cast<type> (expression)
+//              ::= st <type>                                            # sizeof (a type)
+//              ::= sz <expression>                                      # sizeof (an expression)
+//              ::= at <type>                                            # alignof (a type)
+//              ::= az <expression>                                      # alignof (an expression)
+//              ::= nx <expression>                                      # noexcept (expression)
+//              ::= <template-param>
+//              ::= <function-param>
+//              ::= dt <expression> <unresolved-name>                    # expr.name
+//              ::= pt <expression> <unresolved-name>                    # expr->name
+//              ::= ds <expression> <expression>                         # expr.*expr
+//              ::= sZ <template-param>                                  # size of a parameter pack
+//              ::= sZ <function-param>                                  # size of a function parameter pack
+//              ::= sP <template-arg>* E                                 # sizeof...(T), size of a captured template parameter pack from an alias template
+//              ::= sp <expression>                                      # pack expansion
+//              ::= tw <expression>                                      # throw expression
+//              ::= tr                                                   # throw with no operand (rethrow)
+//              ::= <unresolved-name>                                    # f(p), N::f(p), ::f(p),
+//                                                                       # freestanding dependent name (e.g., T::x),
+//                                                                       # objectless nonstatic member reference
+//              ::= fL <binary-operator-name> <expression> <expression>
+//              ::= fR <binary-operator-name> <expression> <expression>
+//              ::= fl <binary-operator-name> <expression>
+//              ::= fr <binary-operator-name> <expression>
+//              ::= <expr-primary>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseExpr() {
+  bool Global = consumeIf("gs");
+
+  const auto *Op = parseOperatorEncoding();
+  if (Op) {
+    auto Sym = Op->getSymbol();
+    switch (Op->getKind()) {
+    case OperatorInfo::Binary:
+      // Binary operator: lhs @ rhs
+      return getDerived().parseBinaryExpr(Sym, Op->getPrecedence());
+    case OperatorInfo::Prefix:
+      // Prefix unary operator: @ expr
+      return getDerived().parsePrefixExpr(Sym, Op->getPrecedence());
+    case OperatorInfo::Postfix: {
+      // Postfix unary operator: expr @
+      if (consumeIf('_'))
+        return getDerived().parsePrefixExpr(Sym, Op->getPrecedence());
+      Node *Ex = getDerived().parseExpr();
+      if (Ex == nullptr)
+        return nullptr;
+      return make<PostfixExpr>(Ex, Sym, Op->getPrecedence());
+    }
+    case OperatorInfo::Array: {
+      // Array Index:  lhs [ rhs ]
+      Node *Base = getDerived().parseExpr();
+      if (Base == nullptr)
+        return nullptr;
+      Node *Index = getDerived().parseExpr();
+      if (Index == nullptr)
+        return nullptr;
+      return make<ArraySubscriptExpr>(Base, Index, Op->getPrecedence());
+    }
+    case OperatorInfo::Member: {
+      // Member access lhs @ rhs
+      Node *LHS = getDerived().parseExpr();
+      if (LHS == nullptr)
+        return nullptr;
+      Node *RHS = getDerived().parseExpr();
+      if (RHS == nullptr)
+        return nullptr;
+      return make<MemberExpr>(LHS, Sym, RHS, Op->getPrecedence());
+    }
+    case OperatorInfo::New: {
+      // New
+      // # new (expr-list) type [(init)]
+      // [gs] nw <expression>* _ <type> [pi <expression>*] E
+      // # new[] (expr-list) type [(init)]
+      // [gs] na <expression>* _ <type> [pi <expression>*] E
+      size_t Exprs = Names.size();
+      while (!consumeIf('_')) {
+        Node *Ex = getDerived().parseExpr();
+        if (Ex == nullptr)
+          return nullptr;
+        Names.push_back(Ex);
+      }
+      NodeArray ExprList = popTrailingNodeArray(Exprs);
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      bool HaveInits = consumeIf("pi");
+      size_t InitsBegin = Names.size();
+      while (!consumeIf('E')) {
+        if (!HaveInits)
+          return nullptr;
+        Node *Init = getDerived().parseExpr();
+        if (Init == nullptr)
+          return Init;
+        Names.push_back(Init);
+      }
+      NodeArray Inits = popTrailingNodeArray(InitsBegin);
+      return make<NewExpr>(ExprList, Ty, Inits, Global,
+                           /*IsArray=*/Op->getFlag(), Op->getPrecedence());
+    }
+    case OperatorInfo::Del: {
+      // Delete
+      Node *Ex = getDerived().parseExpr();
+      if (Ex == nullptr)
+        return nullptr;
+      return make<DeleteExpr>(Ex, Global, /*IsArray=*/Op->getFlag(),
+                              Op->getPrecedence());
+    }
+    case OperatorInfo::Call: {
+      // Function Call
+      Node *Callee = getDerived().parseExpr();
+      if (Callee == nullptr)
+        return nullptr;
+      size_t ExprsBegin = Names.size();
+      while (!consumeIf('E')) {
+        Node *E = getDerived().parseExpr();
+        if (E == nullptr)
+          return nullptr;
+        Names.push_back(E);
+      }
+      return make<CallExpr>(Callee, popTrailingNodeArray(ExprsBegin),
+                            Op->getPrecedence());
+    }
+    case OperatorInfo::CCast: {
+      // C Cast: (type)expr
+      Node *Ty;
+      {
+        ScopedOverride<bool> SaveTemp(TryToParseTemplateArgs, false);
+        Ty = getDerived().parseType();
+      }
+      if (Ty == nullptr)
+        return nullptr;
+
+      size_t ExprsBegin = Names.size();
+      bool IsMany = consumeIf('_');
+      while (!consumeIf('E')) {
+        Node *E = getDerived().parseExpr();
+        if (E == nullptr)
+          return E;
+        Names.push_back(E);
+        if (!IsMany)
+          break;
+      }
+      NodeArray Exprs = popTrailingNodeArray(ExprsBegin);
+      if (!IsMany && Exprs.size() != 1)
+        return nullptr;
+      return make<ConversionExpr>(Ty, Exprs, Op->getPrecedence());
+    }
+    case OperatorInfo::Conditional: {
+      // Conditional operator: expr ? expr : expr
+      Node *Cond = getDerived().parseExpr();
+      if (Cond == nullptr)
+        return nullptr;
+      Node *LHS = getDerived().parseExpr();
+      if (LHS == nullptr)
+        return nullptr;
+      Node *RHS = getDerived().parseExpr();
+      if (RHS == nullptr)
+        return nullptr;
+      return make<ConditionalExpr>(Cond, LHS, RHS, Op->getPrecedence());
+    }
+    case OperatorInfo::NamedCast: {
+      // Named cast operation, @<type>(expr)
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      Node *Ex = getDerived().parseExpr();
+      if (Ex == nullptr)
+        return nullptr;
+      return make<CastExpr>(Sym, Ty, Ex, Op->getPrecedence());
+    }
+    case OperatorInfo::OfIdOp: {
+      // [sizeof/alignof/typeid] ( <type>|<expr> )
+      Node *Arg =
+          Op->getFlag() ? getDerived().parseType() : getDerived().parseExpr();
+      if (!Arg)
+        return nullptr;
+      return make<EnclosingExpr>(Sym, Arg, Op->getPrecedence());
+    }
+    case OperatorInfo::NameOnly: {
+      // Not valid as an expression operand.
+      return nullptr;
+    }
+    }
+    DEMANGLE_UNREACHABLE;
+  }
+
+  if (numLeft() < 2)
+    return nullptr;
+
+  if (look() == 'L')
+    return getDerived().parseExprPrimary();
+  if (look() == 'T')
+    return getDerived().parseTemplateParam();
+  if (look() == 'f') {
+    // Disambiguate a fold expression from a <function-param>.
+    if (look(1) == 'p' || (look(1) == 'L' && std::isdigit(look(2))))
+      return getDerived().parseFunctionParam();
+    return getDerived().parseFoldExpr();
+  }
+  if (consumeIf("il")) {
+    size_t InitsBegin = Names.size();
+    while (!consumeIf('E')) {
+      Node *E = getDerived().parseBracedExpr();
+      if (E == nullptr)
+        return nullptr;
+      Names.push_back(E);
+    }
+    return make<InitListExpr>(nullptr, popTrailingNodeArray(InitsBegin));
+  }
+  if (consumeIf("mc"))
+    return parsePointerToMemberConversionExpr(Node::Prec::Unary);
+  if (consumeIf("nx")) {
+    Node *Ex = getDerived().parseExpr();
+    if (Ex == nullptr)
+      return Ex;
+    return make<EnclosingExpr>("noexcept ", Ex, Node::Prec::Unary);
+  }
+  if (consumeIf("so"))
+    return parseSubobjectExpr();
+  if (consumeIf("sp")) {
+    Node *Child = getDerived().parseExpr();
+    if (Child == nullptr)
+      return nullptr;
+    return make<ParameterPackExpansion>(Child);
+  }
+  if (consumeIf("sZ")) {
+    if (look() == 'T') {
+      Node *R = getDerived().parseTemplateParam();
+      if (R == nullptr)
+        return nullptr;
+      return make<SizeofParamPackExpr>(R);
+    }
+    Node *FP = getDerived().parseFunctionParam();
+    if (FP == nullptr)
+      return nullptr;
+    return make<EnclosingExpr>("sizeof... ", FP);
+  }
+  if (consumeIf("sP")) {
+    size_t ArgsBegin = Names.size();
+    while (!consumeIf('E')) {
+      Node *Arg = getDerived().parseTemplateArg();
+      if (Arg == nullptr)
+        return nullptr;
+      Names.push_back(Arg);
+    }
+    auto *Pack = make<NodeArrayNode>(popTrailingNodeArray(ArgsBegin));
+    if (!Pack)
+      return nullptr;
+    return make<EnclosingExpr>("sizeof... ", Pack);
+  }
+  if (consumeIf("tl")) {
+    Node *Ty = getDerived().parseType();
+    if (Ty == nullptr)
+      return nullptr;
+    size_t InitsBegin = Names.size();
+    while (!consumeIf('E')) {
+      Node *E = getDerived().parseBracedExpr();
+      if (E == nullptr)
+        return nullptr;
+      Names.push_back(E);
+    }
+    return make<InitListExpr>(Ty, popTrailingNodeArray(InitsBegin));
+  }
+  if (consumeIf("tr"))
+    return make<NameType>("throw");
+  if (consumeIf("tw")) {
+    Node *Ex = getDerived().parseExpr();
+    if (Ex == nullptr)
+      return nullptr;
+    return make<ThrowExpr>(Ex);
+  }
+  if (consumeIf('u')) {
+    Node *Name = getDerived().parseSourceName(/*NameState=*/nullptr);
+    if (!Name)
+      return nullptr;
+    // Special case legacy __uuidof mangling. The 't' and 'z' appear where the
+    // standard encoding expects a <template-arg>, and would be otherwise be
+    // interpreted as <type> node 'short' or 'ellipsis'. However, neither
+    // __uuidof(short) nor __uuidof(...) can actually appear, so there is no
+    // actual conflict here.
+    bool IsUUID = false;
+    Node *UUID = nullptr;
+    if (Name->getBaseName() == "__uuidof") {
+      if (consumeIf('t')) {
+        UUID = getDerived().parseType();
+        IsUUID = true;
+      } else if (consumeIf('z')) {
+        UUID = getDerived().parseExpr();
+        IsUUID = true;
+      }
+    }
+    size_t ExprsBegin = Names.size();
+    if (IsUUID) {
+      if (UUID == nullptr)
+        return nullptr;
+      Names.push_back(UUID);
+    } else {
+      while (!consumeIf('E')) {
+        Node *E = getDerived().parseTemplateArg();
+        if (E == nullptr)
+          return E;
+        Names.push_back(E);
+      }
+    }
+    return make<CallExpr>(Name, popTrailingNodeArray(ExprsBegin),
+                          Node::Prec::Postfix);
+  }
+
+  // Only unresolved names remain.
+  return getDerived().parseUnresolvedName(Global);
+}
+
+// <call-offset> ::= h <nv-offset> _
+//               ::= v <v-offset> _
+//
+// <nv-offset> ::= <offset number>
+//               # non-virtual base override
+//
+// <v-offset>  ::= <offset number> _ <virtual offset number>
+//               # virtual base override, with vcall offset
+template <typename Alloc, typename Derived>
+bool AbstractManglingParser<Alloc, Derived>::parseCallOffset() {
+  // Just scan through the call offset, we never add this information into the
+  // output.
+  if (consumeIf('h'))
+    return parseNumber(true).empty() || !consumeIf('_');
+  if (consumeIf('v'))
+    return parseNumber(true).empty() || !consumeIf('_') ||
+           parseNumber(true).empty() || !consumeIf('_');
+  return true;
+}
+
+// <special-name> ::= TV <type>    # virtual table
+//                ::= TT <type>    # VTT structure (construction vtable index)
+//                ::= TI <type>    # typeinfo structure
+//                ::= TS <type>    # typeinfo name (null-terminated byte string)
+//                ::= Tc <call-offset> <call-offset> <base encoding>
+//                    # base is the nominal target function of thunk
+//                    # first call-offset is 'this' adjustment
+//                    # second call-offset is result adjustment
+//                ::= T <call-offset> <base encoding>
+//                    # base is the nominal target function of thunk
+//                # Guard variable for one-time initialization
+//                ::= GV <object name>
+//                                     # No <type>
+//                ::= TW <object name> # Thread-local wrapper
+//                ::= TH <object name> # Thread-local initialization
+//                ::= GR <object name> _             # First temporary
+//                ::= GR <object name> <seq-id> _    # Subsequent temporaries
+//                # construction vtable for second-in-first
+//      extension ::= TC <first type> <number> _ <second type>
+//      extension ::= GR <object name> # reference temporary for object
+//      extension ::= GI <module name> # module global initializer
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseSpecialName() {
+  switch (look()) {
+  case 'T':
+    switch (look(1)) {
+    // TA <template-arg>    # template parameter object
+    //
+    // Not yet in the spec: https://github.com/itanium-cxx-abi/cxx-abi/issues/63
+    case 'A': {
+      First += 2;
+      Node *Arg = getDerived().parseTemplateArg();
+      if (Arg == nullptr)
+        return nullptr;
+      return make<SpecialName>("template parameter object for ", Arg);
+    }
+    // TV <type>    # virtual table
+    case 'V': {
+      First += 2;
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      return make<SpecialName>("vtable for ", Ty);
+    }
+    // TT <type>    # VTT structure (construction vtable index)
+    case 'T': {
+      First += 2;
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      return make<SpecialName>("VTT for ", Ty);
+    }
+    // TI <type>    # typeinfo structure
+    case 'I': {
+      First += 2;
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      return make<SpecialName>("typeinfo for ", Ty);
+    }
+    // TS <type>    # typeinfo name (null-terminated byte string)
+    case 'S': {
+      First += 2;
+      Node *Ty = getDerived().parseType();
+      if (Ty == nullptr)
+        return nullptr;
+      return make<SpecialName>("typeinfo name for ", Ty);
+    }
+    // Tc <call-offset> <call-offset> <base encoding>
+    case 'c': {
+      First += 2;
+      if (parseCallOffset() || parseCallOffset())
+        return nullptr;
+      Node *Encoding = getDerived().parseEncoding();
+      if (Encoding == nullptr)
+        return nullptr;
+      return make<SpecialName>("covariant return thunk to ", Encoding);
+    }
+    // extension ::= TC <first type> <number> _ <second type>
+    //               # construction vtable for second-in-first
+    case 'C': {
+      First += 2;
+      Node *FirstType = getDerived().parseType();
+      if (FirstType == nullptr)
+        return nullptr;
+      if (parseNumber(true).empty() || !consumeIf('_'))
+        return nullptr;
+      Node *SecondType = getDerived().parseType();
+      if (SecondType == nullptr)
+        return nullptr;
+      return make<CtorVtableSpecialName>(SecondType, FirstType);
+    }
+    // TW <object name> # Thread-local wrapper
+    case 'W': {
+      First += 2;
+      Node *Name = getDerived().parseName();
+      if (Name == nullptr)
+        return nullptr;
+      return make<SpecialName>("thread-local wrapper routine for ", Name);
+    }
+    // TH <object name> # Thread-local initialization
+    case 'H': {
+      First += 2;
+      Node *Name = getDerived().parseName();
+      if (Name == nullptr)
+        return nullptr;
+      return make<SpecialName>("thread-local initialization routine for ", Name);
+    }
+    // T <call-offset> <base encoding>
+    default: {
+      ++First;
+      bool IsVirt = look() == 'v';
+      if (parseCallOffset())
+        return nullptr;
+      Node *BaseEncoding = getDerived().parseEncoding();
+      if (BaseEncoding == nullptr)
+        return nullptr;
+      if (IsVirt)
+        return make<SpecialName>("virtual thunk to ", BaseEncoding);
+      else
+        return make<SpecialName>("non-virtual thunk to ", BaseEncoding);
+    }
+    }
+  case 'G':
+    switch (look(1)) {
+    // GV <object name> # Guard variable for one-time initialization
+    case 'V': {
+      First += 2;
+      Node *Name = getDerived().parseName();
+      if (Name == nullptr)
+        return nullptr;
+      return make<SpecialName>("guard variable for ", Name);
+    }
+    // GR <object name> # reference temporary for object
+    // GR <object name> _             # First temporary
+    // GR <object name> <seq-id> _    # Subsequent temporaries
+    case 'R': {
+      First += 2;
+      Node *Name = getDerived().parseName();
+      if (Name == nullptr)
+        return nullptr;
+      size_t Count;
+      bool ParsedSeqId = !parseSeqId(&Count);
+      if (!consumeIf('_') && ParsedSeqId)
+        return nullptr;
+      return make<SpecialName>("reference temporary for ", Name);
+    }
+    // GI <module-name> v
+    case 'I': {
+      First += 2;
+      ModuleName *Module = nullptr;
+      if (getDerived().parseModuleNameOpt(Module))
+        return nullptr;
+      if (Module == nullptr)
+        return nullptr;
+      return make<SpecialName>("initializer for module ", Module);
+    }
+    }
+  }
+  return nullptr;
+}
+
+// <encoding> ::= <function name> <bare-function-type>
+//            ::= <data name>
+//            ::= <special-name>
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseEncoding() {
+  // The template parameters of an encoding are unrelated to those of the
+  // enclosing context.
+  class SaveTemplateParams {
+    AbstractManglingParser *Parser;
+    decltype(TemplateParams) OldParams;
+    decltype(OuterTemplateParams) OldOuterParams;
+
+  public:
+    SaveTemplateParams(AbstractManglingParser *TheParser) : Parser(TheParser) {
+      OldParams = std::move(Parser->TemplateParams);
+      OldOuterParams = std::move(Parser->OuterTemplateParams);
+      Parser->TemplateParams.clear();
+      Parser->OuterTemplateParams.clear();
+    }
+    ~SaveTemplateParams() {
+      Parser->TemplateParams = std::move(OldParams);
+      Parser->OuterTemplateParams = std::move(OldOuterParams);
+    }
+  } SaveTemplateParams(this);
+
+  if (look() == 'G' || look() == 'T')
+    return getDerived().parseSpecialName();
+
+  auto IsEndOfEncoding = [&] {
+    // The set of chars that can potentially follow an <encoding> (none of which
+    // can start a <type>). Enumerating these allows us to avoid speculative
+    // parsing.
+    return numLeft() == 0 || look() == 'E' || look() == '.' || look() == '_';
+  };
+
+  NameState NameInfo(this);
+  Node *Name = getDerived().parseName(&NameInfo);
+  if (Name == nullptr)
+    return nullptr;
+
+  if (resolveForwardTemplateRefs(NameInfo))
+    return nullptr;
+
+  if (IsEndOfEncoding())
+    return Name;
+
+  Node *Attrs = nullptr;
+  if (consumeIf("Ua9enable_ifI")) {
+    size_t BeforeArgs = Names.size();
+    while (!consumeIf('E')) {
+      Node *Arg = getDerived().parseTemplateArg();
+      if (Arg == nullptr)
+        return nullptr;
+      Names.push_back(Arg);
+    }
+    Attrs = make<EnableIfAttr>(popTrailingNodeArray(BeforeArgs));
+    if (!Attrs)
+      return nullptr;
+  }
+
+  Node *ReturnType = nullptr;
+  if (!NameInfo.CtorDtorConversion && NameInfo.EndsWithTemplateArgs) {
+    ReturnType = getDerived().parseType();
+    if (ReturnType == nullptr)
+      return nullptr;
+  }
+
+  if (consumeIf('v'))
+    return make<FunctionEncoding>(ReturnType, Name, NodeArray(),
+                                  Attrs, NameInfo.CVQualifiers,
+                                  NameInfo.ReferenceQualifier);
+
+  size_t ParamsBegin = Names.size();
+  do {
+    Node *Ty = getDerived().parseType();
+    if (Ty == nullptr)
+      return nullptr;
+    Names.push_back(Ty);
+  } while (!IsEndOfEncoding());
+
+  return make<FunctionEncoding>(ReturnType, Name,
+                                popTrailingNodeArray(ParamsBegin),
+                                Attrs, NameInfo.CVQualifiers,
+                                NameInfo.ReferenceQualifier);
+}
+
+template <class Float>
+struct FloatData;
+
+template <>
+struct FloatData<float>
+{
+    static const size_t mangled_size = 8;
+    static const size_t max_demangled_size = 24;
+    static constexpr const char* spec = "%af";
+};
+
+template <>
+struct FloatData<double>
+{
+    static const size_t mangled_size = 16;
+    static const size_t max_demangled_size = 32;
+    static constexpr const char* spec = "%a";
+};
+
+template <>
+struct FloatData<long double>
+{
+#if defined(__mips__) && defined(__mips_n64) || defined(__aarch64__) || \
+    defined(__wasm__) || defined(__riscv) || defined(__loongarch__)
+    static const size_t mangled_size = 32;
+#elif defined(__arm__) || defined(__mips__) || defined(__hexagon__)
+    static const size_t mangled_size = 16;
+#else
+    static const size_t mangled_size = 20;  // May need to be adjusted to 16 or 24 on other platforms
+#endif
+    // `-0x1.ffffffffffffffffffffffffffffp+16383` + 'L' + '\0' == 42 bytes.
+    // 28 'f's * 4 bits == 112 bits, which is the number of mantissa bits.
+    // Negatives are one character longer than positives.
+    // `0x1.` and `p` are constant, and exponents `+16383` and `-16382` are the
+    // same length. 1 sign bit, 112 mantissa bits, and 15 exponent bits == 128.
+    static const size_t max_demangled_size = 42;
+    static constexpr const char *spec = "%LaL";
+};
+
+template <typename Alloc, typename Derived>
+template <class Float>
+Node *AbstractManglingParser<Alloc, Derived>::parseFloatingLiteral() {
+  const size_t N = FloatData<Float>::mangled_size;
+  if (numLeft() <= N)
+    return nullptr;
+  StringView Data(First, First + N);
+  for (char C : Data)
+    if (!std::isxdigit(C))
+      return nullptr;
+  First += N;
+  if (!consumeIf('E'))
+    return nullptr;
+  return make<FloatLiteralImpl<Float>>(Data);
+}
+
+// <seq-id> ::= <0-9A-Z>+
+template <typename Alloc, typename Derived>
+bool AbstractManglingParser<Alloc, Derived>::parseSeqId(size_t *Out) {
+  if (!(look() >= '0' && look() <= '9') &&
+      !(look() >= 'A' && look() <= 'Z'))
+    return true;
+
+  size_t Id = 0;
+  while (true) {
+    if (look() >= '0' && look() <= '9') {
+      Id *= 36;
+      Id += static_cast<size_t>(look() - '0');
+    } else if (look() >= 'A' && look() <= 'Z') {
+      Id *= 36;
+      Id += static_cast<size_t>(look() - 'A') + 10;
+    } else {
+      *Out = Id;
+      return false;
+    }
+    ++First;
+  }
+}
+
+// <substitution> ::= S <seq-id> _
+//                ::= S_
+// <substitution> ::= Sa # ::std::allocator
+// <substitution> ::= Sb # ::std::basic_string
+// <substitution> ::= Ss # ::std::basic_string < char,
+//                                               ::std::char_traits<char>,
+//                                               ::std::allocator<char> >
+// <substitution> ::= Si # ::std::basic_istream<char,  std::char_traits<char> >
+// <substitution> ::= So # ::std::basic_ostream<char,  std::char_traits<char> >
+// <substitution> ::= Sd # ::std::basic_iostream<char, std::char_traits<char> >
+// The St case is handled specially in parseNestedName.
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseSubstitution() {
+  if (!consumeIf('S'))
+    return nullptr;
+
+  if (look() >= 'a' && look() <= 'z') {
+    SpecialSubKind Kind;
+    switch (look()) {
+    case 'a':
+      Kind = SpecialSubKind::allocator;
+      break;
+    case 'b':
+      Kind = SpecialSubKind::basic_string;
+      break;
+    case 'd':
+      Kind = SpecialSubKind::iostream;
+      break;
+    case 'i':
+      Kind = SpecialSubKind::istream;
+      break;
+    case 'o':
+      Kind = SpecialSubKind::ostream;
+      break;
+    case 's':
+      Kind = SpecialSubKind::string;
+      break;
+    default:
+      return nullptr;
+    }
+    ++First;
+    auto *SpecialSub = make<SpecialSubstitution>(Kind);
+    if (!SpecialSub)
+      return nullptr;
+
+    // Itanium C++ ABI 5.1.2: If a name that would use a built-in <substitution>
+    // has ABI tags, the tags are appended to the substitution; the result is a
+    // substitutable component.
+    Node *WithTags = getDerived().parseAbiTags(SpecialSub);
+    if (WithTags != SpecialSub) {
+      Subs.push_back(WithTags);
+      SpecialSub = WithTags;
+    }
+    return SpecialSub;
+  }
+
+  //                ::= S_
+  if (consumeIf('_')) {
+    if (Subs.empty())
+      return nullptr;
+    return Subs[0];
+  }
+
+  //                ::= S <seq-id> _
+  size_t Index = 0;
+  if (parseSeqId(&Index))
+    return nullptr;
+  ++Index;
+  if (!consumeIf('_') || Index >= Subs.size())
+    return nullptr;
+  return Subs[Index];
+}
+
+// <template-param> ::= T_    # first template parameter
+//                  ::= T <parameter-2 non-negative number> _
+//                  ::= TL <level-1> __
+//                  ::= TL <level-1> _ <parameter-2 non-negative number> _
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseTemplateParam() {
+  if (!consumeIf('T'))
+    return nullptr;
+
+  size_t Level = 0;
+  if (consumeIf('L')) {
+    if (parsePositiveInteger(&Level))
+      return nullptr;
+    ++Level;
+    if (!consumeIf('_'))
+      return nullptr;
+  }
+
+  size_t Index = 0;
+  if (!consumeIf('_')) {
+    if (parsePositiveInteger(&Index))
+      return nullptr;
+    ++Index;
+    if (!consumeIf('_'))
+      return nullptr;
+  }
+
+  // If we're in a context where this <template-param> refers to a
+  // <template-arg> further ahead in the mangled name (currently just conversion
+  // operator types), then we should only look it up in the right context.
+  // This can only happen at the outermost level.
+  if (PermitForwardTemplateReferences && Level == 0) {
+    Node *ForwardRef = make<ForwardTemplateReference>(Index);
+    if (!ForwardRef)
+      return nullptr;
+    assert(ForwardRef->getKind() == Node::KForwardTemplateReference);
+    ForwardTemplateRefs.push_back(
+        static_cast<ForwardTemplateReference *>(ForwardRef));
+    return ForwardRef;
+  }
+
+  if (Level >= TemplateParams.size() || !TemplateParams[Level] ||
+      Index >= TemplateParams[Level]->size()) {
+    // Itanium ABI 5.1.8: In a generic lambda, uses of auto in the parameter
+    // list are mangled as the corresponding artificial template type parameter.
+    if (ParsingLambdaParamsAtLevel == Level && Level <= TemplateParams.size()) {
+      // This will be popped by the ScopedTemplateParamList in
+      // parseUnnamedTypeName.
+      if (Level == TemplateParams.size())
+        TemplateParams.push_back(nullptr);
+      return make<NameType>("auto");
+    }
+
+    return nullptr;
+  }
+
+  return (*TemplateParams[Level])[Index];
+}
+
+// <template-param-decl> ::= Ty                          # type parameter
+//                       ::= Tn <type>                   # non-type parameter
+//                       ::= Tt <template-param-decl>* E # template parameter
+//                       ::= Tp <template-param-decl>    # parameter pack
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseTemplateParamDecl() {
+  auto InventTemplateParamName = [&](TemplateParamKind Kind) {
+    unsigned Index = NumSyntheticTemplateParameters[(int)Kind]++;
+    Node *N = make<SyntheticTemplateParamName>(Kind, Index);
+    if (N) TemplateParams.back()->push_back(N);
+    return N;
+  };
+
+  if (consumeIf("Ty")) {
+    Node *Name = InventTemplateParamName(TemplateParamKind::Type);
+    if (!Name)
+      return nullptr;
+    return make<TypeTemplateParamDecl>(Name);
+  }
+
+  if (consumeIf("Tn")) {
+    Node *Name = InventTemplateParamName(TemplateParamKind::NonType);
+    if (!Name)
+      return nullptr;
+    Node *Type = parseType();
+    if (!Type)
+      return nullptr;
+    return make<NonTypeTemplateParamDecl>(Name, Type);
+  }
+
+  if (consumeIf("Tt")) {
+    Node *Name = InventTemplateParamName(TemplateParamKind::Template);
+    if (!Name)
+      return nullptr;
+    size_t ParamsBegin = Names.size();
+    ScopedTemplateParamList TemplateTemplateParamParams(this);
+    while (!consumeIf("E")) {
+      Node *P = parseTemplateParamDecl();
+      if (!P)
+        return nullptr;
+      Names.push_back(P);
+    }
+    NodeArray Params = popTrailingNodeArray(ParamsBegin);
+    return make<TemplateTemplateParamDecl>(Name, Params);
+  }
+
+  if (consumeIf("Tp")) {
+    Node *P = parseTemplateParamDecl();
+    if (!P)
+      return nullptr;
+    return make<TemplateParamPackDecl>(P);
+  }
+
+  return nullptr;
+}
+
+// <template-arg> ::= <type>                    # type or template
+//                ::= X <expression> E          # expression
+//                ::= <expr-primary>            # simple expressions
+//                ::= J <template-arg>* E       # argument pack
+//                ::= LZ <encoding> E           # extension
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parseTemplateArg() {
+  switch (look()) {
+  case 'X': {
+    ++First;
+    Node *Arg = getDerived().parseExpr();
+    if (Arg == nullptr || !consumeIf('E'))
+      return nullptr;
+    return Arg;
+  }
+  case 'J': {
+    ++First;
+    size_t ArgsBegin = Names.size();
+    while (!consumeIf('E')) {
+      Node *Arg = getDerived().parseTemplateArg();
+      if (Arg == nullptr)
+        return nullptr;
+      Names.push_back(Arg);
+    }
+    NodeArray Args = popTrailingNodeArray(ArgsBegin);
+    return make<TemplateArgumentPack>(Args);
+  }
+  case 'L': {
+    //                ::= LZ <encoding> E           # extension
+    if (look(1) == 'Z') {
+      First += 2;
+      Node *Arg = getDerived().parseEncoding();
+      if (Arg == nullptr || !consumeIf('E'))
+        return nullptr;
+      return Arg;
+    }
+    //                ::= <expr-primary>            # simple expressions
+    return getDerived().parseExprPrimary();
+  }
+  default:
+    return getDerived().parseType();
+  }
+}
+
+// <template-args> ::= I <template-arg>* E
+//     extension, the abi says <template-arg>+
+template <typename Derived, typename Alloc>
+Node *
+AbstractManglingParser<Derived, Alloc>::parseTemplateArgs(bool TagTemplates) {
+  if (!consumeIf('I'))
+    return nullptr;
+
+  // <template-params> refer to the innermost <template-args>. Clear out any
+  // outer args that we may have inserted into TemplateParams.
+  if (TagTemplates) {
+    TemplateParams.clear();
+    TemplateParams.push_back(&OuterTemplateParams);
+    OuterTemplateParams.clear();
+  }
+
+  size_t ArgsBegin = Names.size();
+  while (!consumeIf('E')) {
+    if (TagTemplates) {
+      auto OldParams = std::move(TemplateParams);
+      Node *Arg = getDerived().parseTemplateArg();
+      TemplateParams = std::move(OldParams);
+      if (Arg == nullptr)
+        return nullptr;
+      Names.push_back(Arg);
+      Node *TableEntry = Arg;
+      if (Arg->getKind() == Node::KTemplateArgumentPack) {
+        TableEntry = make<ParameterPack>(
+            static_cast<TemplateArgumentPack*>(TableEntry)->getElements());
+        if (!TableEntry)
+          return nullptr;
+      }
+      TemplateParams.back()->push_back(TableEntry);
+    } else {
+      Node *Arg = getDerived().parseTemplateArg();
+      if (Arg == nullptr)
+        return nullptr;
+      Names.push_back(Arg);
+    }
+  }
+  return make<TemplateArgs>(popTrailingNodeArray(ArgsBegin));
+}
+
+// <mangled-name> ::= _Z <encoding>
+//                ::= <type>
+// extension      ::= ___Z <encoding> _block_invoke
+// extension      ::= ___Z <encoding> _block_invoke<decimal-digit>+
+// extension      ::= ___Z <encoding> _block_invoke_<decimal-digit>+
+template <typename Derived, typename Alloc>
+Node *AbstractManglingParser<Derived, Alloc>::parse() {
+  if (consumeIf("_Z") || consumeIf("__Z")) {
+    Node *Encoding = getDerived().parseEncoding();
+    if (Encoding == nullptr)
+      return nullptr;
+    if (look() == '.') {
+      Encoding = make<DotSuffix>(Encoding, StringView(First, Last));
+      First = Last;
+    }
+    if (numLeft() != 0)
+      return nullptr;
+    return Encoding;
+  }
+
+  if (consumeIf("___Z") || consumeIf("____Z")) {
+    Node *Encoding = getDerived().parseEncoding();
+    if (Encoding == nullptr || !consumeIf("_block_invoke"))
+      return nullptr;
+    bool RequireNumber = consumeIf('_');
+    if (parseNumber().empty() && RequireNumber)
+      return nullptr;
+    if (look() == '.')
+      First = Last;
+    if (numLeft() != 0)
+      return nullptr;
+    return make<SpecialName>("invocation function for block in ", Encoding);
+  }
+
+  Node *Ty = getDerived().parseType();
+  if (numLeft() != 0)
+    return nullptr;
+  return Ty;
+}
+
+template <typename Alloc>
+struct ManglingParser : AbstractManglingParser<ManglingParser<Alloc>, Alloc> {
+  using AbstractManglingParser<ManglingParser<Alloc>,
+                               Alloc>::AbstractManglingParser;
+};
+
+DEMANGLE_NAMESPACE_END
+
+#endif // DEMANGLE_ITANIUMDEMANGLE_H
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/ItaniumNodes.def b/app/src/main/cpp/libcxx/src/abi/demangle/ItaniumNodes.def
new file mode 100644
index 0000000..f615cb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/ItaniumNodes.def
@@ -0,0 +1,95 @@
+//===------------------------- ItaniumNodes.def ----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Define the demangler's node names
+
+#ifndef NODE
+#error Define NODE to handle nodes
+#endif
+
+NODE(NodeArrayNode)
+NODE(DotSuffix)
+NODE(VendorExtQualType)
+NODE(QualType)
+NODE(ConversionOperatorType)
+NODE(PostfixQualifiedType)
+NODE(ElaboratedTypeSpefType)
+NODE(NameType)
+NODE(AbiTagAttr)
+NODE(EnableIfAttr)
+NODE(ObjCProtoName)
+NODE(PointerType)
+NODE(ReferenceType)
+NODE(PointerToMemberType)
+NODE(ArrayType)
+NODE(FunctionType)
+NODE(NoexceptSpec)
+NODE(DynamicExceptionSpec)
+NODE(FunctionEncoding)
+NODE(LiteralOperator)
+NODE(SpecialName)
+NODE(CtorVtableSpecialName)
+NODE(QualifiedName)
+NODE(NestedName)
+NODE(LocalName)
+NODE(ModuleName)
+NODE(ModuleEntity)
+NODE(VectorType)
+NODE(PixelVectorType)
+NODE(BinaryFPType)
+NODE(BitIntType)
+NODE(SyntheticTemplateParamName)
+NODE(TypeTemplateParamDecl)
+NODE(NonTypeTemplateParamDecl)
+NODE(TemplateTemplateParamDecl)
+NODE(TemplateParamPackDecl)
+NODE(ParameterPack)
+NODE(TemplateArgumentPack)
+NODE(ParameterPackExpansion)
+NODE(TemplateArgs)
+NODE(ForwardTemplateReference)
+NODE(NameWithTemplateArgs)
+NODE(GlobalQualifiedName)
+NODE(ExpandedSpecialSubstitution)
+NODE(SpecialSubstitution)
+NODE(CtorDtorName)
+NODE(DtorName)
+NODE(UnnamedTypeName)
+NODE(ClosureTypeName)
+NODE(StructuredBindingName)
+NODE(BinaryExpr)
+NODE(ArraySubscriptExpr)
+NODE(PostfixExpr)
+NODE(ConditionalExpr)
+NODE(MemberExpr)
+NODE(SubobjectExpr)
+NODE(EnclosingExpr)
+NODE(CastExpr)
+NODE(SizeofParamPackExpr)
+NODE(CallExpr)
+NODE(NewExpr)
+NODE(DeleteExpr)
+NODE(PrefixExpr)
+NODE(FunctionParam)
+NODE(ConversionExpr)
+NODE(PointerToMemberConversionExpr)
+NODE(InitListExpr)
+NODE(FoldExpr)
+NODE(ThrowExpr)
+NODE(BoolExpr)
+NODE(StringLiteral)
+NODE(LambdaExpr)
+NODE(EnumLiteral)
+NODE(IntegerLiteral)
+NODE(FloatLiteral)
+NODE(DoubleLiteral)
+NODE(LongDoubleLiteral)
+NODE(BracedExpr)
+NODE(BracedRangeExpr)
+
+#undef NODE
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/README.txt b/app/src/main/cpp/libcxx/src/abi/demangle/README.txt
new file mode 100644
index 0000000..76470f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/README.txt
@@ -0,0 +1,61 @@
+Itanium Name Demangler Library
+==============================
+
+Introduction
+------------
+
+This directory contains the generic itanium name demangler
+library. The main purpose of the library is to demangle C++ symbols,
+i.e. convert the string "_Z1fv" into "f()". You can also use the CRTP
+base ManglingParser to perform some simple analysis on the mangled
+name, or (in LLVM) use the opaque ItaniumPartialDemangler to query the
+demangled AST.
+
+Why are there multiple copies of the this library in the source tree?
+---------------------------------------------------------------------
+
+The canonical sources are in libcxxabi/src/demangle and some of the
+files are copied to llvm/include/llvm/Demangle.  The simple reason for
+this comes from before the monorepo, and both [sub]projects need to
+demangle symbols, but neither can depend on each other.
+
+* libcxxabi needs the demangler to implement __cxa_demangle, which is
+  part of the itanium ABI spec.
+
+* LLVM needs a copy for a bunch of places, and cannot rely on the
+  system's __cxa_demangle because it a) might not be available (i.e.,
+  on Windows), and b) may not be up-to-date on the latest language
+  features.
+
+The copy of the demangler in LLVM has some extra stuff that aren't
+needed in libcxxabi (ie, the MSVC demangler, ItaniumPartialDemangler),
+which depend on the shared generic components. Despite these
+differences, we want to keep the "core" generic demangling library
+identical between both copies to simplify development and testing.
+
+If you're working on the generic library, then do the work first in
+libcxxabi, then run the cp-to-llvm.sh script in src/demangle. This
+script takes as an optional argument the path to llvm, and copies the
+changes you made to libcxxabi over.  Note that this script just
+blindly overwrites all changes to the generic library in llvm, so be
+careful.
+
+Because the core demangler needs to work in libcxxabi, everything
+needs to be declared in an anonymous namespace (see
+DEMANGLE_NAMESPACE_BEGIN), and you can't introduce any code that
+depends on the libcxx dylib.
+
+FIXME: Now that LLVM is a monorepo, it should be possible to
+de-duplicate this code, and have both LLVM and libcxxabi depend on a
+shared demangler library.
+
+Testing
+-------
+
+The tests are split up between libcxxabi/test/{unit,}test_demangle.cpp, and
+llvm/unittest/Demangle. The llvm directory should only get tests for stuff not
+included in the core library. In the future though, we should probably move all
+the tests to LLVM.
+
+It is also a really good idea to run libFuzzer after non-trivial changes, see
+libcxxabi/fuzz/cxa_demangle_fuzzer.cpp and https://llvm.org/docs/LibFuzzer.html.
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/StringView.h b/app/src/main/cpp/libcxx/src/abi/demangle/StringView.h
new file mode 100644
index 0000000..90890e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/StringView.h
@@ -0,0 +1,122 @@
+//===--- StringView.h -------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// FIXME: Use std::string_view instead when we support C++17.
+// There are two copies of this file in the source tree.  The one under
+// libcxxabi is the original and the one under llvm is the copy.  Use
+// cp-to-llvm.sh to update the copy.  See README.txt for more details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef DEMANGLE_STRINGVIEW_H
+#define DEMANGLE_STRINGVIEW_H
+
+#include "DemangleConfig.h"
+#include <cassert>
+#include <cstring>
+
+DEMANGLE_NAMESPACE_BEGIN
+
+class StringView {
+  const char *First;
+  const char *Last;
+
+public:
+  static const size_t npos = ~size_t(0);
+
+  template <size_t N>
+  StringView(const char (&Str)[N]) : First(Str), Last(Str + N - 1) {}
+  StringView(const char *First_, const char *Last_)
+      : First(First_), Last(Last_) {}
+  StringView(const char *First_, size_t Len)
+      : First(First_), Last(First_ + Len) {}
+  StringView(const char *Str) : First(Str), Last(Str + std::strlen(Str)) {}
+  StringView() : First(nullptr), Last(nullptr) {}
+
+  StringView substr(size_t Pos, size_t Len = npos) const {
+    assert(Pos <= size());
+    if (Len > size() - Pos)
+      Len = size() - Pos;
+    return StringView(begin() + Pos, Len);
+  }
+
+  size_t find(char C, size_t From = 0) const {
+    // Avoid calling memchr with nullptr.
+    if (From < size()) {
+      // Just forward to memchr, which is faster than a hand-rolled loop.
+      if (const void *P = ::memchr(First + From, C, size() - From))
+        return size_t(static_cast<const char *>(P) - First);
+    }
+    return npos;
+  }
+
+  StringView dropFront(size_t N = 1) const {
+    if (N >= size())
+      N = size();
+    return StringView(First + N, Last);
+  }
+
+  StringView dropBack(size_t N = 1) const {
+    if (N >= size())
+      N = size();
+    return StringView(First, Last - N);
+  }
+
+  char front() const {
+    assert(!empty());
+    return *begin();
+  }
+
+  char back() const {
+    assert(!empty());
+    return *(end() - 1);
+  }
+
+  char popFront() {
+    assert(!empty());
+    return *First++;
+  }
+
+  bool consumeFront(char C) {
+    if (!startsWith(C))
+      return false;
+    *this = dropFront(1);
+    return true;
+  }
+
+  bool consumeFront(StringView S) {
+    if (!startsWith(S))
+      return false;
+    *this = dropFront(S.size());
+    return true;
+  }
+
+  bool startsWith(char C) const { return !empty() && *begin() == C; }
+
+  bool startsWith(StringView Str) const {
+    if (Str.size() > size())
+      return false;
+    return std::strncmp(Str.begin(), begin(), Str.size()) == 0;
+  }
+
+  const char &operator[](size_t Idx) const { return *(begin() + Idx); }
+
+  const char *begin() const { return First; }
+  const char *end() const { return Last; }
+  size_t size() const { return static_cast<size_t>(Last - First); }
+  bool empty() const { return First == Last; }
+};
+
+inline bool operator==(const StringView &LHS, const StringView &RHS) {
+  return LHS.size() == RHS.size() &&
+         std::strncmp(LHS.begin(), RHS.begin(), LHS.size()) == 0;
+}
+
+DEMANGLE_NAMESPACE_END
+
+#endif
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/Utility.h b/app/src/main/cpp/libcxx/src/abi/demangle/Utility.h
new file mode 100644
index 0000000..c9b211b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/Utility.h
@@ -0,0 +1,199 @@
+//===--- Utility.h ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Provide some utility classes for use in the demangler.
+// There are two copies of this file in the source tree.  The one in libcxxabi
+// is the original and the one in llvm is the copy.  Use cp-to-llvm.sh to update
+// the copy.  See README.txt for more details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef DEMANGLE_UTILITY_H
+#define DEMANGLE_UTILITY_H
+
+#include "StringView.h"
+#include <array>
+#include <cstdint>
+#include <cstdlib>
+#include <cstring>
+#include <exception>
+#include <limits>
+
+DEMANGLE_NAMESPACE_BEGIN
+
+// Stream that AST nodes write their string representation into after the AST
+// has been parsed.
+class OutputBuffer {
+  char *Buffer = nullptr;
+  size_t CurrentPosition = 0;
+  size_t BufferCapacity = 0;
+
+  // Ensure there are at least N more positions in the buffer.
+  void grow(size_t N) {
+    size_t Need = N + CurrentPosition;
+    if (Need > BufferCapacity) {
+      // Reduce the number of reallocations, with a bit of hysteresis. The
+      // number here is chosen so the first allocation will more-than-likely not
+      // allocate more than 1K.
+      Need += 1024 - 32;
+      BufferCapacity *= 2;
+      if (BufferCapacity < Need)
+        BufferCapacity = Need;
+      Buffer = static_cast<char *>(std::realloc(Buffer, BufferCapacity));
+      if (Buffer == nullptr)
+        std::terminate();
+    }
+  }
+
+  OutputBuffer &writeUnsigned(uint64_t N, bool isNeg = false) {
+    std::array<char, 21> Temp;
+    char *TempPtr = Temp.data() + Temp.size();
+
+    // Output at least one character.
+    do {
+      *--TempPtr = char('0' + N % 10);
+      N /= 10;
+    } while (N);
+
+    // Add negative sign.
+    if (isNeg)
+      *--TempPtr = '-';
+
+    return operator+=(StringView(TempPtr, Temp.data() + Temp.size()));
+  }
+
+public:
+  OutputBuffer(char *StartBuf, size_t Size)
+      : Buffer(StartBuf), BufferCapacity(Size) {}
+  OutputBuffer(char *StartBuf, size_t *SizePtr)
+      : OutputBuffer(StartBuf, StartBuf ? *SizePtr : 0) {}
+  OutputBuffer() = default;
+  // Non-copyable
+  OutputBuffer(const OutputBuffer &) = delete;
+  OutputBuffer &operator=(const OutputBuffer &) = delete;
+
+  operator StringView() const { return StringView(Buffer, CurrentPosition); }
+
+  /// If a ParameterPackExpansion (or similar type) is encountered, the offset
+  /// into the pack that we're currently printing.
+  unsigned CurrentPackIndex = std::numeric_limits<unsigned>::max();
+  unsigned CurrentPackMax = std::numeric_limits<unsigned>::max();
+
+  /// When zero, we're printing template args and '>' needs to be parenthesized.
+  /// Use a counter so we can simply increment inside parentheses.
+  unsigned GtIsGt = 1;
+
+  bool isGtInsideTemplateArgs() const { return GtIsGt == 0; }
+
+  void printOpen(char Open = '(') {
+    GtIsGt++;
+    *this += Open;
+  }
+  void printClose(char Close = ')') {
+    GtIsGt--;
+    *this += Close;
+  }
+
+  OutputBuffer &operator+=(StringView R) {
+    if (size_t Size = R.size()) {
+      grow(Size);
+      std::memcpy(Buffer + CurrentPosition, R.begin(), Size);
+      CurrentPosition += Size;
+    }
+    return *this;
+  }
+
+  OutputBuffer &operator+=(char C) {
+    grow(1);
+    Buffer[CurrentPosition++] = C;
+    return *this;
+  }
+
+  OutputBuffer &prepend(StringView R) {
+    size_t Size = R.size();
+
+    grow(Size);
+    std::memmove(Buffer + Size, Buffer, CurrentPosition);
+    std::memcpy(Buffer, R.begin(), Size);
+    CurrentPosition += Size;
+
+    return *this;
+  }
+
+  OutputBuffer &operator<<(StringView R) { return (*this += R); }
+
+  OutputBuffer &operator<<(char C) { return (*this += C); }
+
+  OutputBuffer &operator<<(long long N) {
+    return writeUnsigned(static_cast<unsigned long long>(std::abs(N)), N < 0);
+  }
+
+  OutputBuffer &operator<<(unsigned long long N) {
+    return writeUnsigned(N, false);
+  }
+
+  OutputBuffer &operator<<(long N) {
+    return this->operator<<(static_cast<long long>(N));
+  }
+
+  OutputBuffer &operator<<(unsigned long N) {
+    return this->operator<<(static_cast<unsigned long long>(N));
+  }
+
+  OutputBuffer &operator<<(int N) {
+    return this->operator<<(static_cast<long long>(N));
+  }
+
+  OutputBuffer &operator<<(unsigned int N) {
+    return this->operator<<(static_cast<unsigned long long>(N));
+  }
+
+  void insert(size_t Pos, const char *S, size_t N) {
+    assert(Pos <= CurrentPosition);
+    if (N == 0)
+      return;
+    grow(N);
+    std::memmove(Buffer + Pos + N, Buffer + Pos, CurrentPosition - Pos);
+    std::memcpy(Buffer + Pos, S, N);
+    CurrentPosition += N;
+  }
+
+  size_t getCurrentPosition() const { return CurrentPosition; }
+  void setCurrentPosition(size_t NewPos) { CurrentPosition = NewPos; }
+
+  char back() const {
+    assert(CurrentPosition);
+    return Buffer[CurrentPosition - 1];
+  }
+
+  bool empty() const { return CurrentPosition == 0; }
+
+  char *getBuffer() { return Buffer; }
+  char *getBufferEnd() { return Buffer + CurrentPosition - 1; }
+  size_t getBufferCapacity() const { return BufferCapacity; }
+};
+
+template <class T> class ScopedOverride {
+  T &Loc;
+  T Original;
+
+public:
+  ScopedOverride(T &Loc_) : ScopedOverride(Loc_, Loc_) {}
+
+  ScopedOverride(T &Loc_, T NewVal) : Loc(Loc_), Original(Loc_) {
+    Loc_ = std::move(NewVal);
+  }
+  ~ScopedOverride() { Loc = std::move(Original); }
+
+  ScopedOverride(const ScopedOverride &) = delete;
+  ScopedOverride &operator=(const ScopedOverride &) = delete;
+};
+
+DEMANGLE_NAMESPACE_END
+
+#endif
diff --git a/app/src/main/cpp/libcxx/src/abi/demangle/cp-to-llvm.sh b/app/src/main/cpp/libcxx/src/abi/demangle/cp-to-llvm.sh
new file mode 100644
index 0000000..d147465
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/demangle/cp-to-llvm.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Copies the 'demangle' library, excluding 'DemangleConfig.h', to llvm. If no
+# llvm directory is specified, then assume a monorepo layout.
+
+set -e
+
+cd $(dirname $0)
+HDRS="ItaniumDemangle.h ItaniumNodes.def StringView.h Utility.h"
+LLVM_DEMANGLE_DIR=$1
+
+if [[ -z "$LLVM_DEMANGLE_DIR" ]]; then
+    LLVM_DEMANGLE_DIR="../../../llvm/include/llvm/Demangle"
+fi
+
+if [[ ! -d "$LLVM_DEMANGLE_DIR" ]]; then
+    echo "No such directory: $LLVM_DEMANGLE_DIR" >&2
+    exit 1
+fi
+
+read -p "This will overwrite the copies of $FILES in $LLVM_DEMANGLE_DIR; are you sure? [y/N]" -n 1 -r ANSWER
+echo
+
+if [[ $ANSWER =~ ^[Yy]$ ]]; then
+    cp -f README.txt $LLVM_DEMANGLE_DIR
+    chmod -w $LLVM_DEMANGLE_DIR/README.txt
+    for I in $HDRS ; do
+	rm -f $LLVM_DEMANGLE_DIR/$I
+	dash=$(echo "$I---------------------------" | cut -c -27 |\
+		   sed 's|[^-]*||')
+	sed -e '1s|^//=*-* .*\..* -*.*=*// *$|//===--- '"$I $dash"'-*- mode:c++;eval:(read-only-mode) -*-===//|' \
+	    -e '2s|^// *$|//       Do not edit! See README.txt.|' \
+	    $I >$LLVM_DEMANGLE_DIR/$I
+	chmod -w $LLVM_DEMANGLE_DIR/$I
+    done
+fi
diff --git a/app/src/main/cpp/libcxx/src/abi/fallback_malloc.cpp b/app/src/main/cpp/libcxx/src/abi/fallback_malloc.cpp
new file mode 100644
index 0000000..591efbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/fallback_malloc.cpp
@@ -0,0 +1,303 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "fallback_malloc.h"
+
+#include <__threading_support>
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+#if defined(__ELF__) && defined(_LIBCXXABI_LINK_PTHREAD_LIB)
+#pragma comment(lib, "pthread")
+#endif
+#endif
+
+#include <assert.h>
+#include <stdlib.h> // for malloc, calloc, free
+#include <string.h> // for memset
+#include <new> // for std::__libcpp_aligned_{alloc,free}
+
+//  A small, simple heap manager based (loosely) on
+//  the startup heap manager from FreeBSD, optimized for space.
+//
+//  Manages a fixed-size memory pool, supports malloc and free only.
+//  No support for realloc.
+//
+//  Allocates chunks in multiples of four bytes, with a four byte header
+//  for each chunk. The overhead of each chunk is kept low by keeping pointers
+//  as two byte offsets within the heap, rather than (4 or 8 byte) pointers.
+
+namespace {
+
+// When POSIX threads are not available, make the mutex operations a nop
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+static _LIBCPP_CONSTINIT std::__libcpp_mutex_t heap_mutex = _LIBCPP_MUTEX_INITIALIZER;
+#else
+static _LIBCPP_CONSTINIT void* heap_mutex = 0;
+#endif
+
+class mutexor {
+public:
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+  mutexor(std::__libcpp_mutex_t* m) : mtx_(m) {
+    std::__libcpp_mutex_lock(mtx_);
+  }
+  ~mutexor() { std::__libcpp_mutex_unlock(mtx_); }
+#else
+  mutexor(void*) {}
+  ~mutexor() {}
+#endif
+private:
+  mutexor(const mutexor& rhs);
+  mutexor& operator=(const mutexor& rhs);
+#ifndef _LIBCXXABI_HAS_NO_THREADS
+  std::__libcpp_mutex_t* mtx_;
+#endif
+};
+
+static const size_t HEAP_SIZE = 512;
+char heap[HEAP_SIZE] __attribute__((aligned));
+
+typedef unsigned short heap_offset;
+typedef unsigned short heap_size;
+
+// On both 64 and 32 bit targets heap_node should have the following properties
+// Size: 4
+// Alignment: 2
+struct heap_node {
+  heap_offset next_node; // offset into heap
+  heap_size len;         // size in units of "sizeof(heap_node)"
+};
+
+// All pointers returned by fallback_malloc must be at least aligned
+// as RequiredAligned. Note that RequiredAlignment can be greater than
+// alignof(std::max_align_t) on 64 bit systems compiling 32 bit code.
+struct FallbackMaxAlignType {
+} __attribute__((aligned));
+const size_t RequiredAlignment = alignof(FallbackMaxAlignType);
+
+static_assert(alignof(FallbackMaxAlignType) % sizeof(heap_node) == 0,
+              "The required alignment must be evenly divisible by the sizeof(heap_node)");
+
+// The number of heap_node's that can fit in a chunk of memory with the size
+// of the RequiredAlignment. On 64 bit targets NodesPerAlignment should be 4.
+const size_t NodesPerAlignment = alignof(FallbackMaxAlignType) / sizeof(heap_node);
+
+static const heap_node* list_end =
+    (heap_node*)(&heap[HEAP_SIZE]); // one past the end of the heap
+static heap_node* freelist = NULL;
+
+heap_node* node_from_offset(const heap_offset offset) {
+  return (heap_node*)(heap + (offset * sizeof(heap_node)));
+}
+
+heap_offset offset_from_node(const heap_node* ptr) {
+  return static_cast<heap_offset>(
+      static_cast<size_t>(reinterpret_cast<const char*>(ptr) - heap) /
+      sizeof(heap_node));
+}
+
+// Return a pointer to the first address, 'A', in `heap` that can actually be
+// used to represent a heap_node. 'A' must be aligned so that
+// '(A + sizeof(heap_node)) % RequiredAlignment == 0'. On 64 bit systems this
+// address should be 12 bytes after the first 16 byte boundary.
+heap_node* getFirstAlignedNodeInHeap() {
+  heap_node* node = (heap_node*)heap;
+  const size_t alignNBytesAfterBoundary = RequiredAlignment - sizeof(heap_node);
+  size_t boundaryOffset = reinterpret_cast<size_t>(node) % RequiredAlignment;
+  size_t requiredOffset = alignNBytesAfterBoundary - boundaryOffset;
+  size_t NElemOffset = requiredOffset / sizeof(heap_node);
+  return node + NElemOffset;
+}
+
+void init_heap() {
+  freelist = getFirstAlignedNodeInHeap();
+  freelist->next_node = offset_from_node(list_end);
+  freelist->len = static_cast<heap_size>(list_end - freelist);
+}
+
+//  How big a chunk we allocate
+size_t alloc_size(size_t len) {
+  return (len + sizeof(heap_node) - 1) / sizeof(heap_node) + 1;
+}
+
+bool is_fallback_ptr(void* ptr) {
+  return ptr >= heap && ptr < (heap + HEAP_SIZE);
+}
+
+void* fallback_malloc(size_t len) {
+  heap_node *p, *prev;
+  const size_t nelems = alloc_size(len);
+  mutexor mtx(&heap_mutex);
+
+  if (NULL == freelist)
+    init_heap();
+
+  //  Walk the free list, looking for a "big enough" chunk
+  for (p = freelist, prev = 0; p && p != list_end;
+       prev = p, p = node_from_offset(p->next_node)) {
+
+    // Check the invariant that all heap_nodes pointers 'p' are aligned
+    // so that 'p + 1' has an alignment of at least RequiredAlignment
+    assert(reinterpret_cast<size_t>(p + 1) % RequiredAlignment == 0);
+
+    // Calculate the number of extra padding elements needed in order
+    // to split 'p' and create a properly aligned heap_node from the tail
+    // of 'p'. We calculate aligned_nelems such that 'p->len - aligned_nelems'
+    // will be a multiple of NodesPerAlignment.
+    size_t aligned_nelems = nelems;
+    if (p->len > nelems) {
+      heap_size remaining_len = static_cast<heap_size>(p->len - nelems);
+      aligned_nelems += remaining_len % NodesPerAlignment;
+    }
+
+    // chunk is larger and we can create a properly aligned heap_node
+    // from the tail. In this case we shorten 'p' and return the tail.
+    if (p->len > aligned_nelems) {
+      heap_node* q;
+      p->len = static_cast<heap_size>(p->len - aligned_nelems);
+      q = p + p->len;
+      q->next_node = 0;
+      q->len = static_cast<heap_size>(aligned_nelems);
+      void* ptr = q + 1;
+      assert(reinterpret_cast<size_t>(ptr) % RequiredAlignment == 0);
+      return ptr;
+    }
+
+    // The chunk is the exact size or the chunk is larger but not large
+    // enough to split due to alignment constraints.
+    if (p->len >= nelems) {
+      if (prev == 0)
+        freelist = node_from_offset(p->next_node);
+      else
+        prev->next_node = p->next_node;
+      p->next_node = 0;
+      void* ptr = p + 1;
+      assert(reinterpret_cast<size_t>(ptr) % RequiredAlignment == 0);
+      return ptr;
+    }
+  }
+  return NULL; // couldn't find a spot big enough
+}
+
+//  Return the start of the next block
+heap_node* after(struct heap_node* p) { return p + p->len; }
+
+void fallback_free(void* ptr) {
+  struct heap_node* cp = ((struct heap_node*)ptr) - 1; // retrieve the chunk
+  struct heap_node *p, *prev;
+
+  mutexor mtx(&heap_mutex);
+
+#ifdef DEBUG_FALLBACK_MALLOC
+  std::printf("Freeing item at %d of size %d\n", offset_from_node(cp), cp->len);
+#endif
+
+  for (p = freelist, prev = 0; p && p != list_end;
+       prev = p, p = node_from_offset(p->next_node)) {
+#ifdef DEBUG_FALLBACK_MALLOC
+    std::printf("  p=%d, cp=%d, after(p)=%d, after(cp)=%d\n",
+      offset_from_node(p), offset_from_node(cp),
+      offset_from_node(after(p)), offset_from_node(after(cp)));
+#endif
+    if (after(p) == cp) {
+#ifdef DEBUG_FALLBACK_MALLOC
+      std::printf("  Appending onto chunk at %d\n", offset_from_node(p));
+#endif
+      p->len = static_cast<heap_size>(
+          p->len + cp->len); // make the free heap_node larger
+      return;
+    } else if (after(cp) == p) { // there's a free heap_node right after
+#ifdef DEBUG_FALLBACK_MALLOC
+      std::printf("  Appending free chunk at %d\n", offset_from_node(p));
+#endif
+      cp->len = static_cast<heap_size>(cp->len + p->len);
+      if (prev == 0) {
+        freelist = cp;
+        cp->next_node = p->next_node;
+      } else
+        prev->next_node = offset_from_node(cp);
+      return;
+    }
+  }
+//  Nothing to merge with, add it to the start of the free list
+#ifdef DEBUG_FALLBACK_MALLOC
+  std::printf("  Making new free list entry %d\n", offset_from_node(cp));
+#endif
+  cp->next_node = offset_from_node(freelist);
+  freelist = cp;
+}
+
+#ifdef INSTRUMENT_FALLBACK_MALLOC
+size_t print_free_list() {
+  struct heap_node *p, *prev;
+  heap_size total_free = 0;
+  if (NULL == freelist)
+    init_heap();
+
+  for (p = freelist, prev = 0; p && p != list_end;
+       prev = p, p = node_from_offset(p->next_node)) {
+    std::printf("%sOffset: %d\tsize: %d Next: %d\n",
+      (prev == 0 ? "" : "  "), offset_from_node(p), p->len, p->next_node);
+    total_free += p->len;
+  }
+  std::printf("Total Free space: %d\n", total_free);
+  return total_free;
+}
+#endif
+} // end unnamed namespace
+
+namespace __cxxabiv1 {
+
+struct __attribute__((aligned)) __aligned_type {};
+
+void* __aligned_malloc_with_fallback(size_t size) {
+#if defined(_WIN32)
+  if (void* dest = std::__libcpp_aligned_alloc(alignof(__aligned_type), size))
+    return dest;
+#elif defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION)
+  if (void* dest = ::malloc(size))
+    return dest;
+#else
+  if (size == 0)
+    size = 1;
+  if (void* dest = std::__libcpp_aligned_alloc(__alignof(__aligned_type), size))
+    return dest;
+#endif
+  return fallback_malloc(size);
+}
+
+void* __calloc_with_fallback(size_t count, size_t size) {
+  void* ptr = ::calloc(count, size);
+  if (NULL != ptr)
+    return ptr;
+  // if calloc fails, fall back to emergency stash
+  ptr = fallback_malloc(size * count);
+  if (NULL != ptr)
+    ::memset(ptr, 0, size * count);
+  return ptr;
+}
+
+void __aligned_free_with_fallback(void* ptr) {
+  if (is_fallback_ptr(ptr))
+    fallback_free(ptr);
+  else {
+#if defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION)
+    ::free(ptr);
+#else
+    std::__libcpp_aligned_free(ptr);
+#endif
+  }
+}
+
+void __free_with_fallback(void* ptr) {
+  if (is_fallback_ptr(ptr))
+    fallback_free(ptr);
+  else
+    ::free(ptr);
+}
+
+} // namespace __cxxabiv1
diff --git a/app/src/main/cpp/libcxx/src/abi/fallback_malloc.h b/app/src/main/cpp/libcxx/src/abi/fallback_malloc.h
new file mode 100644
index 0000000..816e691
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/fallback_malloc.h
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _FALLBACK_MALLOC_H
+#define _FALLBACK_MALLOC_H
+
+#include "__cxxabi_config.h"
+#include <stddef.h> // for size_t
+
+namespace __cxxabiv1 {
+
+// Allocate some memory from _somewhere_
+_LIBCXXABI_HIDDEN void * __aligned_malloc_with_fallback(size_t size);
+
+// Allocate and zero-initialize memory from _somewhere_
+_LIBCXXABI_HIDDEN void * __calloc_with_fallback(size_t count, size_t size);
+
+_LIBCXXABI_HIDDEN void __aligned_free_with_fallback(void *ptr);
+_LIBCXXABI_HIDDEN void __free_with_fallback(void *ptr);
+
+} // namespace __cxxabiv1
+
+#endif
diff --git a/app/src/main/cpp/libcxx/src/abi/private_typeinfo.cpp b/app/src/main/cpp/libcxx/src/abi/private_typeinfo.cpp
new file mode 100644
index 0000000..e108666
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/private_typeinfo.cpp
@@ -0,0 +1,1326 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "private_typeinfo.h"
+
+// The flag _LIBCXXABI_FORGIVING_DYNAMIC_CAST is used to make dynamic_cast
+// more forgiving when type_info's mistakenly have hidden visibility and
+// thus multiple type_infos can exist for a single type.
+//
+// When _LIBCXXABI_FORGIVING_DYNAMIC_CAST is defined, and only in the case where
+// there is a detected inconsistency in the type_info hierarchy during a
+// dynamic_cast, then the equality operation will fall back to using strcmp
+// on type_info names to determine type_info equality.
+//
+// This change happens *only* under dynamic_cast, and only when
+// dynamic_cast is faced with the choice:  abort, or possibly give back the
+// wrong answer.  If when the dynamic_cast is done with this fallback
+// algorithm and an inconsistency is still detected, dynamic_cast will call
+// abort with an appropriate message.
+//
+// The current implementation of _LIBCXXABI_FORGIVING_DYNAMIC_CAST requires a
+// printf-like function called syslog:
+//
+//     void syslog(int facility_priority, const char* format, ...);
+//
+// If you want this functionality but your platform doesn't have syslog,
+// just implement it in terms of fprintf(stderr, ...).
+//
+// _LIBCXXABI_FORGIVING_DYNAMIC_CAST is currently off by default.
+
+// On Windows, typeids are different between DLLs and EXEs, so comparing
+// type_info* will work for typeids from the same compiled file but fail
+// for typeids from a DLL and an executable. Among other things, exceptions
+// are not caught by handlers since can_catch() returns false.
+//
+// Defining _LIBCXXABI_FORGIVING_DYNAMIC_CAST does not help since can_catch() calls
+// is_equal() with use_strcmp=false so the string names are not compared.
+
+#include <string.h>
+
+#ifdef _LIBCXXABI_FORGIVING_DYNAMIC_CAST
+#include "abort_message.h"
+#include <sys/syslog.h>
+#include <atomic>
+#endif
+
+static inline
+bool
+is_equal(const std::type_info* x, const std::type_info* y, bool use_strcmp)
+{
+    // Use std::type_info's default comparison unless we've explicitly asked
+    // for strcmp.
+    if (!use_strcmp)
+        return *x == *y;
+    // Still allow pointer equality to short circut.
+    return x == y || strcmp(x->name(), y->name()) == 0;
+}
+
+static inline ptrdiff_t update_offset_to_base(const char* vtable,
+                                              ptrdiff_t offset_to_base) {
+#if __has_feature(cxx_abi_relative_vtable)
+  // VTable components are 32 bits in the relative vtables ABI.
+  return *reinterpret_cast<const int32_t*>(vtable + offset_to_base);
+#else
+  return *reinterpret_cast<const ptrdiff_t*>(vtable + offset_to_base);
+#endif
+}
+
+namespace __cxxabiv1
+{
+
+// __shim_type_info
+
+__shim_type_info::~__shim_type_info()
+{
+}
+
+void __shim_type_info::noop1() const {}
+void __shim_type_info::noop2() const {}
+
+// __fundamental_type_info
+
+// This miraculously (compiler magic) emits the type_info's for:
+//   1. all of the fundamental types
+//   2. pointers to all of the fundamental types
+//   3. pointers to all of the const fundamental types
+__fundamental_type_info::~__fundamental_type_info()
+{
+}
+
+// __array_type_info
+
+__array_type_info::~__array_type_info()
+{
+}
+
+// __function_type_info
+
+__function_type_info::~__function_type_info()
+{
+}
+
+// __enum_type_info
+
+__enum_type_info::~__enum_type_info()
+{
+}
+
+// __class_type_info
+
+__class_type_info::~__class_type_info()
+{
+}
+
+// __si_class_type_info
+
+__si_class_type_info::~__si_class_type_info()
+{
+}
+
+// __vmi_class_type_info
+
+__vmi_class_type_info::~__vmi_class_type_info()
+{
+}
+
+// __pbase_type_info
+
+__pbase_type_info::~__pbase_type_info()
+{
+}
+
+// __pointer_type_info
+
+__pointer_type_info::~__pointer_type_info()
+{
+}
+
+// __pointer_to_member_type_info
+
+__pointer_to_member_type_info::~__pointer_to_member_type_info()
+{
+}
+
+// can_catch
+
+// A handler is a match for an exception object of type E if
+//   1. The handler is of type cv T or cv T& and E and T are the same type
+//      (ignoring the top-level cv-qualifiers), or
+//   2. the handler is of type cv T or cv T& and T is an unambiguous public
+//       base class of E, or
+//   3. the handler is of type cv1 T* cv2 and E is a pointer type that can be
+//      converted to the type of the handler by either or both of
+//      A. a standard pointer conversion (4.10) not involving conversions to
+//         pointers to private or protected or ambiguous classes
+//      B. a qualification conversion
+//   4. the handler is a pointer or pointer to member type and E is
+//      std::nullptr_t.
+
+// adjustedPtr:
+//
+// catch (A& a) : adjustedPtr == &a
+// catch (A* a) : adjustedPtr == a
+// catch (A** a) : adjustedPtr == a
+//
+// catch (D2& d2) : adjustedPtr == &d2  (d2 is base class of thrown object)
+// catch (D2* d2) : adjustedPtr == d2
+// catch (D2*& d2) : adjustedPtr == d2
+//
+// catch (...) : adjustedPtr == & of the exception
+//
+// If the thrown type is nullptr_t and the caught type is a pointer to
+// member type, adjustedPtr points to a statically-allocated null pointer
+// representation of that type.
+
+// Handles bullet 1
+bool
+__fundamental_type_info::can_catch(const __shim_type_info* thrown_type,
+                                   void*&) const
+{
+    return is_equal(this, thrown_type, false);
+}
+
+bool
+__array_type_info::can_catch(const __shim_type_info*, void*&) const
+{
+    // We can get here if someone tries to catch an array by reference.
+    //   However if someone tries to throw an array, it immediately gets
+    //   converted to a pointer, which will not convert back to an array
+    //   at the catch clause.  So this can never catch anything.
+    return false;
+}
+
+bool
+__function_type_info::can_catch(const __shim_type_info*, void*&) const
+{
+    // We can get here if someone tries to catch a function by reference.
+    //   However if someone tries to throw a function, it immediately gets
+    //   converted to a pointer, which will not convert back to a function
+    //   at the catch clause.  So this can never catch anything.
+    return false;
+}
+
+// Handles bullet 1
+bool
+__enum_type_info::can_catch(const __shim_type_info* thrown_type,
+                            void*&) const
+{
+    return is_equal(this, thrown_type, false);
+}
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+// Handles bullets 1 and 2
+bool
+__class_type_info::can_catch(const __shim_type_info* thrown_type,
+                             void*& adjustedPtr) const
+{
+    // bullet 1
+    if (is_equal(this, thrown_type, false))
+        return true;
+    const __class_type_info* thrown_class_type =
+        dynamic_cast<const __class_type_info*>(thrown_type);
+    if (thrown_class_type == 0)
+        return false;
+    // bullet 2
+    __dynamic_cast_info info = {thrown_class_type, 0, this, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
+    info.number_of_dst_type = 1;
+    thrown_class_type->has_unambiguous_public_base(&info, adjustedPtr, public_path);
+    if (info.path_dst_ptr_to_static_ptr == public_path)
+    {
+        adjustedPtr = const_cast<void*>(info.dst_ptr_leading_to_static_ptr);
+        return true;
+    }
+    return false;
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+void
+__class_type_info::process_found_base_class(__dynamic_cast_info* info,
+                                               void* adjustedPtr,
+                                               int path_below) const
+{
+    if (info->dst_ptr_leading_to_static_ptr == 0)
+    {
+        // First time here
+        info->dst_ptr_leading_to_static_ptr = adjustedPtr;
+        info->path_dst_ptr_to_static_ptr = path_below;
+        info->number_to_static_ptr = 1;
+    }
+    else if (info->dst_ptr_leading_to_static_ptr == adjustedPtr)
+    {
+        // We've been here before.  Update path to "most public"
+        if (info->path_dst_ptr_to_static_ptr == not_public_path)
+            info->path_dst_ptr_to_static_ptr = path_below;
+    }
+    else
+    {
+        // We've detected an ambiguous cast from (thrown_class_type, adjustedPtr)
+        //   to a static_type
+        info->number_to_static_ptr += 1;
+        info->path_dst_ptr_to_static_ptr = not_public_path;
+        info->search_done = true;
+    }
+}
+
+void
+__class_type_info::has_unambiguous_public_base(__dynamic_cast_info* info,
+                                               void* adjustedPtr,
+                                               int path_below) const
+{
+    if (is_equal(this, info->static_type, false))
+        process_found_base_class(info, adjustedPtr, path_below);
+}
+
+void
+__si_class_type_info::has_unambiguous_public_base(__dynamic_cast_info* info,
+                                                  void* adjustedPtr,
+                                                  int path_below) const
+{
+    if (is_equal(this, info->static_type, false))
+        process_found_base_class(info, adjustedPtr, path_below);
+    else
+        __base_type->has_unambiguous_public_base(info, adjustedPtr, path_below);
+}
+
+void
+__base_class_type_info::has_unambiguous_public_base(__dynamic_cast_info* info,
+                                                    void* adjustedPtr,
+                                                    int path_below) const
+{
+    ptrdiff_t offset_to_base = 0;
+    if (adjustedPtr != nullptr)
+    {
+        offset_to_base = __offset_flags >> __offset_shift;
+        if (__offset_flags & __virtual_mask)
+        {
+            const char* vtable = *static_cast<const char*const*>(adjustedPtr);
+            offset_to_base = update_offset_to_base(vtable, offset_to_base);
+        }
+    }
+    __base_type->has_unambiguous_public_base(
+            info,
+            static_cast<char*>(adjustedPtr) + offset_to_base,
+            (__offset_flags & __public_mask) ? path_below : not_public_path);
+}
+
+void
+__vmi_class_type_info::has_unambiguous_public_base(__dynamic_cast_info* info,
+                                                   void* adjustedPtr,
+                                                   int path_below) const
+{
+    if (is_equal(this, info->static_type, false))
+        process_found_base_class(info, adjustedPtr, path_below);
+    else
+    {
+        typedef const __base_class_type_info* Iter;
+        const Iter e = __base_info + __base_count;
+        Iter p = __base_info;
+        p->has_unambiguous_public_base(info, adjustedPtr, path_below);
+        if (++p < e)
+        {
+            do
+            {
+                p->has_unambiguous_public_base(info, adjustedPtr, path_below);
+                if (info->search_done)
+                    break;
+            } while (++p < e);
+        }
+    }
+}
+
+// Handles bullet 1 for both pointers and member pointers
+bool
+__pbase_type_info::can_catch(const __shim_type_info* thrown_type,
+                             void*&) const
+{
+    bool use_strcmp = this->__flags & (__incomplete_class_mask |
+                                       __incomplete_mask);
+    if (!use_strcmp) {
+        const __pbase_type_info* thrown_pbase = dynamic_cast<const __pbase_type_info*>(
+                thrown_type);
+        if (!thrown_pbase) return false;
+        use_strcmp = thrown_pbase->__flags & (__incomplete_class_mask |
+                                              __incomplete_mask);
+    }
+    return is_equal(this, thrown_type, use_strcmp);
+}
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+// Handles bullets 1, 3 and 4
+// NOTE: It might not be safe to adjust the pointer if it is not not a pointer
+// type. Only adjust the pointer after we know it is safe to do so.
+bool
+__pointer_type_info::can_catch(const __shim_type_info* thrown_type,
+                               void*& adjustedPtr) const
+{
+    // bullet 4
+    if (is_equal(thrown_type, &typeid(std::nullptr_t), false)) {
+      adjustedPtr = nullptr;
+      return true;
+    }
+
+    // bullet 1
+    if (__pbase_type_info::can_catch(thrown_type, adjustedPtr)) {
+        if (adjustedPtr != NULL)
+            adjustedPtr = *static_cast<void**>(adjustedPtr);
+        return true;
+    }
+    // bullet 3
+    const __pointer_type_info* thrown_pointer_type =
+        dynamic_cast<const __pointer_type_info*>(thrown_type);
+    if (thrown_pointer_type == 0)
+        return false;
+    // Do the dereference adjustment
+    if (adjustedPtr != NULL)
+        adjustedPtr = *static_cast<void**>(adjustedPtr);
+    // bullet 3B and 3C
+    if (thrown_pointer_type->__flags & ~__flags & __no_remove_flags_mask)
+        return false;
+    if (__flags & ~thrown_pointer_type->__flags & __no_add_flags_mask)
+        return false;
+    if (is_equal(__pointee, thrown_pointer_type->__pointee, false))
+        return true;
+    // bullet 3A
+    if (is_equal(__pointee, &typeid(void), false)) {
+        // pointers to functions cannot be converted to void*.
+        // pointers to member functions are not handled here.
+        const __function_type_info* thrown_function =
+            dynamic_cast<const __function_type_info*>(thrown_pointer_type->__pointee);
+        return (thrown_function == nullptr);
+    }
+    // Handle pointer to pointer
+    const __pointer_type_info* nested_pointer_type =
+        dynamic_cast<const __pointer_type_info*>(__pointee);
+    if (nested_pointer_type) {
+        if (~__flags & __const_mask) return false;
+        return nested_pointer_type->can_catch_nested(thrown_pointer_type->__pointee);
+    }
+
+    // Handle pointer to pointer to member
+    const __pointer_to_member_type_info* member_ptr_type =
+        dynamic_cast<const __pointer_to_member_type_info*>(__pointee);
+    if (member_ptr_type) {
+        if (~__flags & __const_mask) return false;
+        return member_ptr_type->can_catch_nested(thrown_pointer_type->__pointee);
+    }
+
+    // Handle pointer to class type
+    const __class_type_info* catch_class_type =
+        dynamic_cast<const __class_type_info*>(__pointee);
+    if (catch_class_type == 0)
+        return false;
+    const __class_type_info* thrown_class_type =
+        dynamic_cast<const __class_type_info*>(thrown_pointer_type->__pointee);
+    if (thrown_class_type == 0)
+        return false;
+    __dynamic_cast_info info = {thrown_class_type, 0, catch_class_type, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
+    info.number_of_dst_type = 1;
+    thrown_class_type->has_unambiguous_public_base(&info, adjustedPtr, public_path);
+    if (info.path_dst_ptr_to_static_ptr == public_path)
+    {
+        if (adjustedPtr != NULL)
+            adjustedPtr = const_cast<void*>(info.dst_ptr_leading_to_static_ptr);
+        return true;
+    }
+    return false;
+}
+
+bool __pointer_type_info::can_catch_nested(
+    const __shim_type_info* thrown_type) const
+{
+  const __pointer_type_info* thrown_pointer_type =
+        dynamic_cast<const __pointer_type_info*>(thrown_type);
+    if (thrown_pointer_type == 0)
+        return false;
+    // bullet 3B
+    if (thrown_pointer_type->__flags & ~__flags)
+        return false;
+    if (is_equal(__pointee, thrown_pointer_type->__pointee, false))
+        return true;
+    // If the pointed to types differ then the catch type must be const
+    // qualified.
+    if (~__flags & __const_mask)
+        return false;
+
+    // Handle pointer to pointer
+    const __pointer_type_info* nested_pointer_type =
+        dynamic_cast<const __pointer_type_info*>(__pointee);
+    if (nested_pointer_type) {
+        return nested_pointer_type->can_catch_nested(
+            thrown_pointer_type->__pointee);
+    }
+
+    // Handle pointer to pointer to member
+    const __pointer_to_member_type_info* member_ptr_type =
+        dynamic_cast<const __pointer_to_member_type_info*>(__pointee);
+    if (member_ptr_type) {
+        return member_ptr_type->can_catch_nested(thrown_pointer_type->__pointee);
+    }
+
+    return false;
+}
+
+bool __pointer_to_member_type_info::can_catch(
+    const __shim_type_info* thrown_type, void*& adjustedPtr) const {
+    // bullet 4
+    if (is_equal(thrown_type, &typeid(std::nullptr_t), false)) {
+      // We assume that the pointer to member representation is the same for
+      // all pointers to data members and for all pointers to member functions.
+      struct X {};
+      if (dynamic_cast<const __function_type_info*>(__pointee)) {
+        static int (X::*const null_ptr_rep)() = nullptr;
+        adjustedPtr = const_cast<int (X::**)()>(&null_ptr_rep);
+      } else {
+        static int X::*const null_ptr_rep = nullptr;
+        adjustedPtr = const_cast<int X::**>(&null_ptr_rep);
+      }
+      return true;
+    }
+
+    // bullet 1
+    if (__pbase_type_info::can_catch(thrown_type, adjustedPtr))
+        return true;
+
+    const __pointer_to_member_type_info* thrown_pointer_type =
+        dynamic_cast<const __pointer_to_member_type_info*>(thrown_type);
+    if (thrown_pointer_type == 0)
+        return false;
+    if (thrown_pointer_type->__flags & ~__flags & __no_remove_flags_mask)
+        return false;
+    if (__flags & ~thrown_pointer_type->__flags & __no_add_flags_mask)
+        return false;
+    if (!is_equal(__pointee, thrown_pointer_type->__pointee, false))
+        return false;
+    if (is_equal(__context, thrown_pointer_type->__context, false))
+        return true;
+
+    // [except.handle] does not allow the pointer-to-member conversions mentioned
+    // in [mem.conv] to take place. For this reason we don't check Derived->Base
+    // for Derived->Base conversions.
+
+    return false;
+}
+
+bool __pointer_to_member_type_info::can_catch_nested(
+    const __shim_type_info* thrown_type) const
+{
+    const __pointer_to_member_type_info* thrown_member_ptr_type =
+        dynamic_cast<const __pointer_to_member_type_info*>(thrown_type);
+    if (thrown_member_ptr_type == 0)
+        return false;
+    if (~__flags & thrown_member_ptr_type->__flags)
+        return false;
+    if (!is_equal(__pointee, thrown_member_ptr_type->__pointee, false))
+        return false;
+    if (!is_equal(__context, thrown_member_ptr_type->__context, false))
+        return false;
+    return true;
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wmissing-field-initializers"
+#endif
+
+// __dynamic_cast
+
+// static_ptr: pointer to an object of type static_type; nonnull, and since the
+//   object is polymorphic, *(void**)static_ptr is a virtual table pointer.
+//   static_ptr is &v in the expression dynamic_cast<T>(v).
+// static_type: static type of the object pointed to by static_ptr.
+// dst_type: destination type of the cast (the "T" in "dynamic_cast<T>(v)").
+// src2dst_offset: a static hint about the location of the
+//                 source subobject with respect to the complete object;
+//                 special negative values are:
+//                     -1: no hint
+//                     -2: static_type is not a public base of dst_type
+//                     -3: static_type is a multiple public base type but never a
+//                         virtual base type
+//                 otherwise, the static_type type is a unique public nonvirtual
+//                 base type of dst_type at offset src2dst_offset from the
+//                 origin of dst_type.
+//
+// (dynamic_ptr, dynamic_type) are the run time type of the complete object
+// referred to by static_ptr and a pointer to it.  These can be found from
+// static_ptr for polymorphic types.
+// static_type is guaranteed to be a polymorphic type.
+//
+// (dynamic_ptr, dynamic_type) is the root of a DAG that grows upward.  Each
+// node of the tree represents a base class/object of its parent (or parents) below.
+// Each node is uniquely represented by a pointer to the object, and a pointer
+// to a type_info - its type.  Different nodes may have the same pointer and
+// different nodes may have the same type.  But only one node has a specific
+// (pointer-value, type) pair.  In C++ two objects of the same type can not
+// share the same address.
+//
+// There are two flavors of nodes which have the type dst_type:
+//    1.  Those that are derived from (below) (static_ptr, static_type).
+//    2.  Those that are not derived from (below) (static_ptr, static_type).
+//
+// Invariants of the DAG:
+//
+// There is at least one path from the root (dynamic_ptr, dynamic_type) to
+// the node (static_ptr, static_type).  This path may or may not be public.
+// There may be more than one such path (some public some not).  Such a path may
+// or may not go through a node having type dst_type.
+//
+// No node of type T appears above a node of the same type.  That means that
+// there is only one node with dynamic_type.  And if dynamic_type == dst_type,
+// then there is only one dst_type in the DAG.
+//
+// No node of type dst_type appears above a node of type static_type.  Such
+// DAG's are possible in C++, but the compiler computes those dynamic_casts at
+// compile time, and only calls __dynamic_cast when dst_type lies below
+// static_type in the DAG.
+//
+// dst_type != static_type:  The compiler computes the dynamic_cast in this case too.
+// dynamic_type != static_type:  The compiler computes the dynamic_cast in this case too.
+//
+// Returns:
+//
+// If there is exactly one dst_type of flavor 1, and
+//    If there is a public path from that dst_type to (static_ptr, static_type), or
+//    If there are 0 dst_types of flavor 2, and there is a public path from
+//        (dynamic_ptr, dynamic_type) to (static_ptr, static_type) and a public
+//        path from (dynamic_ptr, dynamic_type) to the one dst_type, then return
+//        a pointer to that dst_type.
+// Else if there are 0 dst_types of flavor 1 and exactly 1 dst_type of flavor 2, and
+//    if there is a public path from (dynamic_ptr, dynamic_type) to
+//    (static_ptr, static_type) and a public path from (dynamic_ptr, dynamic_type)
+//    to the one dst_type, then return a pointer to that one dst_type.
+// Else return nullptr.
+//
+// If dynamic_type == dst_type, then the above algorithm collapses to the
+// following cheaper algorithm:
+//
+// If there is a public path from (dynamic_ptr, dynamic_type) to
+//    (static_ptr, static_type), then return dynamic_ptr.
+// Else return nullptr.
+
+extern "C" _LIBCXXABI_FUNC_VIS void *
+__dynamic_cast(const void *static_ptr, const __class_type_info *static_type,
+               const __class_type_info *dst_type,
+               std::ptrdiff_t src2dst_offset) {
+    // Possible future optimization:  Take advantage of src2dst_offset
+
+    // Get (dynamic_ptr, dynamic_type) from static_ptr
+#if __has_feature(cxx_abi_relative_vtable)
+    // The vtable address will point to the first virtual function, which is 8
+    // bytes after the start of the vtable (4 for the offset from top + 4 for the typeinfo component).
+    const int32_t* vtable =
+        *reinterpret_cast<const int32_t* const*>(static_ptr);
+    int32_t offset_to_derived = vtable[-2];
+    const void* dynamic_ptr = static_cast<const char*>(static_ptr) + offset_to_derived;
+
+    // The typeinfo component is now a relative offset to a proxy.
+    int32_t offset_to_ti_proxy = vtable[-1];
+    const uint8_t* ptr_to_ti_proxy =
+        reinterpret_cast<const uint8_t*>(vtable) + offset_to_ti_proxy;
+    const __class_type_info* dynamic_type =
+        *(reinterpret_cast<const __class_type_info* const*>(ptr_to_ti_proxy));
+#else
+    void **vtable = *static_cast<void ** const *>(static_ptr);
+    ptrdiff_t offset_to_derived = reinterpret_cast<ptrdiff_t>(vtable[-2]);
+    const void* dynamic_ptr = static_cast<const char*>(static_ptr) + offset_to_derived;
+    const __class_type_info* dynamic_type = static_cast<const __class_type_info*>(vtable[-1]);
+#endif
+
+    // Initialize answer to nullptr.  This will be changed from the search
+    //    results if a non-null answer is found.  Regardless, this is what will
+    //    be returned.
+    const void* dst_ptr = 0;
+    // Initialize info struct for this search.
+    __dynamic_cast_info info = {dst_type, static_ptr, static_type, src2dst_offset, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};
+
+    // Find out if we can use a giant short cut in the search
+    if (is_equal(dynamic_type, dst_type, false))
+    {
+        // Using giant short cut.  Add that information to info.
+        info.number_of_dst_type = 1;
+        // Do the  search
+        dynamic_type->search_above_dst(&info, dynamic_ptr, dynamic_ptr, public_path, false);
+#ifdef _LIBCXXABI_FORGIVING_DYNAMIC_CAST
+        // The following if should always be false because we should definitely
+        //   find (static_ptr, static_type), either on a public or private path
+        if (info.path_dst_ptr_to_static_ptr == unknown)
+        {
+            // We get here only if there is some kind of visibility problem
+            //   in client code.
+            static_assert(std::atomic<size_t>::is_always_lock_free, "");
+            static std::atomic<size_t> error_count(0);
+            size_t error_count_snapshot = error_count.fetch_add(1, std::memory_order_relaxed);
+            if ((error_count_snapshot & (error_count_snapshot-1)) == 0)
+                syslog(LOG_ERR, "dynamic_cast error 1: Both of the following type_info's "
+                        "should have public visibility. At least one of them is hidden. %s"
+                        ", %s.\n", static_type->name(), dynamic_type->name());
+            // Redo the search comparing type_info's using strcmp
+            info = {dst_type, static_ptr, static_type, src2dst_offset, 0};
+            info.number_of_dst_type = 1;
+            dynamic_type->search_above_dst(&info, dynamic_ptr, dynamic_ptr, public_path, true);
+        }
+#endif // _LIBCXXABI_FORGIVING_DYNAMIC_CAST
+        // Query the search.
+        if (info.path_dst_ptr_to_static_ptr == public_path)
+            dst_ptr = dynamic_ptr;
+    }
+    else
+    {
+        // Not using giant short cut.  Do the search
+        dynamic_type->search_below_dst(&info, dynamic_ptr, public_path, false);
+ #ifdef _LIBCXXABI_FORGIVING_DYNAMIC_CAST
+        // The following if should always be false because we should definitely
+        //   find (static_ptr, static_type), either on a public or private path
+        if (info.path_dst_ptr_to_static_ptr == unknown &&
+            info.path_dynamic_ptr_to_static_ptr == unknown)
+        {
+            static_assert(std::atomic<size_t>::is_always_lock_free, "");
+            static std::atomic<size_t> error_count(0);
+            size_t error_count_snapshot = error_count.fetch_add(1, std::memory_order_relaxed);
+            if ((error_count_snapshot & (error_count_snapshot-1)) == 0)
+                syslog(LOG_ERR, "dynamic_cast error 2: One or more of the following type_info's "
+                                "has hidden visibility or is defined in more than one translation "
+                                "unit. They should all have public visibility. "
+                                "%s, %s, %s.\n", static_type->name(), dynamic_type->name(),
+                        dst_type->name());
+            // Redo the search comparing type_info's using strcmp
+            info = {dst_type, static_ptr, static_type, src2dst_offset, 0};
+            dynamic_type->search_below_dst(&info, dynamic_ptr, public_path, true);
+        }
+#endif // _LIBCXXABI_FORGIVING_DYNAMIC_CAST
+        // Query the search.
+        switch (info.number_to_static_ptr)
+        {
+        case 0:
+            if (info.number_to_dst_ptr == 1 &&
+                    info.path_dynamic_ptr_to_static_ptr == public_path &&
+                    info.path_dynamic_ptr_to_dst_ptr == public_path)
+                dst_ptr = info.dst_ptr_not_leading_to_static_ptr;
+            break;
+        case 1:
+            if (info.path_dst_ptr_to_static_ptr == public_path ||
+                   (
+                       info.number_to_dst_ptr == 0 &&
+                       info.path_dynamic_ptr_to_static_ptr == public_path &&
+                       info.path_dynamic_ptr_to_dst_ptr == public_path
+                   )
+               )
+                dst_ptr = info.dst_ptr_leading_to_static_ptr;
+            break;
+        }
+    }
+    return const_cast<void*>(dst_ptr);
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+// Call this function when you hit a static_type which is a base (above) a dst_type.
+// Let caller know you hit a static_type.  But only start recording details if
+// this is (static_ptr, static_type) -- the node we are casting from.
+// If this is (static_ptr, static_type)
+//   Record the path (public or not) from the dst_type to here.  There may be
+//   multiple paths from the same dst_type to here, record the "most public" one.
+//   Record the dst_ptr as pointing to (static_ptr, static_type).
+//   If more than one (dst_ptr, dst_type) points to (static_ptr, static_type),
+//   then mark this dyanmic_cast as ambiguous and stop the search.
+void
+__class_type_info::process_static_type_above_dst(__dynamic_cast_info* info,
+                                                 const void* dst_ptr,
+                                                 const void* current_ptr,
+                                                 int path_below) const
+{
+    // Record that we found a static_type
+    info->found_any_static_type = true;
+    if (current_ptr == info->static_ptr)
+    {
+        // Record that we found (static_ptr, static_type)
+        info->found_our_static_ptr = true;
+        if (info->dst_ptr_leading_to_static_ptr == 0)
+        {
+            // First time here
+            info->dst_ptr_leading_to_static_ptr = dst_ptr;
+            info->path_dst_ptr_to_static_ptr = path_below;
+            info->number_to_static_ptr = 1;
+            // If there is only one dst_type in the entire tree and the path from
+            //    there to here is public then we are done!
+            if (info->number_of_dst_type == 1 && info->path_dst_ptr_to_static_ptr == public_path)
+                info->search_done = true;
+        }
+        else if (info->dst_ptr_leading_to_static_ptr == dst_ptr)
+        {
+            // We've been here before.  Update path to "most public"
+            if (info->path_dst_ptr_to_static_ptr == not_public_path)
+                info->path_dst_ptr_to_static_ptr = path_below;
+            // If there is only one dst_type in the entire tree and the path from
+            //    there to here is public then we are done!
+            if (info->number_of_dst_type == 1 && info->path_dst_ptr_to_static_ptr == public_path)
+                info->search_done = true;
+        }
+        else
+        {
+            // We've detected an ambiguous cast from (static_ptr, static_type)
+            //   to a dst_type
+            info->number_to_static_ptr += 1;
+            info->search_done = true;
+        }
+    }
+}
+
+// Call this function when you hit a static_type which is not a base (above) a dst_type.
+// If this is (static_ptr, static_type)
+//   Record the path (public or not) from (dynamic_ptr, dynamic_type) to here.  There may be
+//   multiple paths from (dynamic_ptr, dynamic_type) to here, record the "most public" one.
+void
+__class_type_info::process_static_type_below_dst(__dynamic_cast_info* info,
+                                                 const void* current_ptr,
+                                                 int path_below) const
+{
+    if (current_ptr == info->static_ptr)
+    {
+        // Record the most public path from (dynamic_ptr, dynamic_type) to
+        //                                  (static_ptr, static_type)
+        if (info->path_dynamic_ptr_to_static_ptr != public_path)
+            info->path_dynamic_ptr_to_static_ptr = path_below;
+    }
+}
+
+// Call this function when searching below a dst_type node.  This function searches
+// for a path to (static_ptr, static_type) and for paths to one or more dst_type nodes.
+// If it finds a static_type node, there is no need to further search base classes
+// above.
+// If it finds a dst_type node it should search base classes using search_above_dst
+// to find out if this dst_type points to (static_ptr, static_type) or not.
+// Either way, the dst_type is recorded as one of two "flavors":  one that does
+// or does not point to (static_ptr, static_type).
+// If this is neither a static_type nor a dst_type node, continue searching
+// base classes above.
+// All the hoopla surrounding the search code is doing nothing but looking for
+// excuses to stop the search prematurely (break out of the for-loop).  That is,
+// the algorithm below is simply an optimization of this:
+// void
+// __vmi_class_type_info::search_below_dst(__dynamic_cast_info* info,
+//                                         const void* current_ptr,
+//                                         int path_below) const
+// {
+//     typedef const __base_class_type_info* Iter;
+//     if (this == info->static_type)
+//         process_static_type_below_dst(info, current_ptr, path_below);
+//     else if (this == info->dst_type)
+//     {
+//         // Record the most public access path that got us here
+//         if (info->path_dynamic_ptr_to_dst_ptr != public_path)
+//             info->path_dynamic_ptr_to_dst_ptr = path_below;
+//         bool does_dst_type_point_to_our_static_type = false;
+//         for (Iter p = __base_info, e= __base_info + __base_count; p < e; ++p)
+//         {
+//             p->search_above_dst(info, current_ptr, current_ptr, public_path);
+//             if (info->found_our_static_ptr)
+//                 does_dst_type_point_to_our_static_type = true;
+//             // break out early here if you can detect it doesn't matter if you do
+//         }
+//         if (!does_dst_type_point_to_our_static_type)
+//         {
+//             // We found a dst_type that doesn't point to (static_ptr, static_type)
+//             // So record the address of this dst_ptr and increment the
+//             // count of the number of such dst_types found in the tree.
+//             info->dst_ptr_not_leading_to_static_ptr = current_ptr;
+//             info->number_to_dst_ptr += 1;
+//         }
+//     }
+//     else
+//     {
+//         // This is not a static_type and not a dst_type.
+//         for (Iter p = __base_info, e = __base_info + __base_count; p < e; ++p)
+//         {
+//             p->search_below_dst(info, current_ptr, public_path);
+//             // break out early here if you can detect it doesn't matter if you do
+//         }
+//     }
+// }
+void
+__vmi_class_type_info::search_below_dst(__dynamic_cast_info* info,
+                                        const void* current_ptr,
+                                        int path_below,
+                                        bool use_strcmp) const
+{
+    typedef const __base_class_type_info* Iter;
+    if (is_equal(this, info->static_type, use_strcmp))
+        process_static_type_below_dst(info, current_ptr, path_below);
+    else if (is_equal(this, info->dst_type, use_strcmp))
+    {
+        // We've been here before if we've recorded current_ptr in one of these
+        //   two places:
+        if (current_ptr == info->dst_ptr_leading_to_static_ptr ||
+            current_ptr == info->dst_ptr_not_leading_to_static_ptr)
+        {
+            // We've seen this node before, and therefore have already searched
+            // its base classes above.
+            //  Update path to here that is "most public".
+            if (path_below == public_path)
+                info->path_dynamic_ptr_to_dst_ptr = public_path;
+        }
+        else  // We have haven't been here before
+        {
+            // Record the access path that got us here
+            //   If there is more than one dst_type this path doesn't matter.
+            info->path_dynamic_ptr_to_dst_ptr = path_below;
+            bool does_dst_type_point_to_our_static_type = false;
+            // Only search above here if dst_type derives from static_type, or
+            //    if it is unknown if dst_type derives from static_type.
+            if (info->is_dst_type_derived_from_static_type != no)
+            {
+                // Set up flags to record results from all base classes
+                bool is_dst_type_derived_from_static_type = false;
+
+                // We've found a dst_type with a potentially public path to here.
+                // We have to assume the path is public because it may become
+                //   public later (if we get back to here with a public path).
+                // We can stop looking above if:
+                //    1.  We've found a public path to (static_ptr, static_type).
+                //    2.  We've found an ambiguous cast from (static_ptr, static_type) to a dst_type.
+                //        This is detected at the (static_ptr, static_type).
+                //    3.  We can prove that there is no public path to (static_ptr, static_type)
+                //        above here.
+                const Iter e = __base_info + __base_count;
+                for (Iter p = __base_info; p < e; ++p)
+                {
+                    // Zero out found flags
+                    info->found_our_static_ptr = false;
+                    info->found_any_static_type = false;
+                    p->search_above_dst(info, current_ptr, current_ptr, public_path, use_strcmp);
+                    if (info->search_done)
+                        break;
+                    if (info->found_any_static_type)
+                    {
+                        is_dst_type_derived_from_static_type = true;
+                        if (info->found_our_static_ptr)
+                        {
+                            does_dst_type_point_to_our_static_type = true;
+                            // If we found what we're looking for, stop looking above.
+                            if (info->path_dst_ptr_to_static_ptr == public_path)
+                                break;
+                            // We found a private path to (static_ptr, static_type)
+                            //   If there is no diamond then there is only one path
+                            //   to (static_ptr, static_type) and we just found it.
+                            if (!(__flags & __diamond_shaped_mask))
+                                break;
+                        }
+                        else
+                        {
+                            // If we found a static_type that isn't the one we're looking
+                            //    for, and if there are no repeated types above here,
+                            //    then stop looking.
+                            if (!(__flags & __non_diamond_repeat_mask))
+                                break;
+                        }
+                    }
+                }
+                // If we found no static_type,s then dst_type doesn't derive
+                //   from static_type, else it does.  Record this result so that
+                //   next time we hit a dst_type we will know not to search above
+                //   it if it doesn't derive from static_type.
+                if (is_dst_type_derived_from_static_type)
+                    info->is_dst_type_derived_from_static_type = yes;
+                else
+                    info->is_dst_type_derived_from_static_type = no;
+              }
+              if (!does_dst_type_point_to_our_static_type)
+              {
+                  // We found a dst_type that doesn't point to (static_ptr, static_type)
+                  // So record the address of this dst_ptr and increment the
+                  // count of the number of such dst_types found in the tree.
+                  info->dst_ptr_not_leading_to_static_ptr = current_ptr;
+                  info->number_to_dst_ptr += 1;
+                  // If there exists another dst with a private path to
+                  //    (static_ptr, static_type), then the cast from
+                  //     (dynamic_ptr, dynamic_type) to dst_type is now ambiguous,
+                  //      so stop search.
+                  if (info->number_to_static_ptr == 1 &&
+                          info->path_dst_ptr_to_static_ptr == not_public_path)
+                      info->search_done = true;
+              }
+        }
+    }
+    else
+    {
+        // This is not a static_type and not a dst_type.
+        const Iter e = __base_info + __base_count;
+        Iter p = __base_info;
+        p->search_below_dst(info, current_ptr, path_below, use_strcmp);
+        if (++p < e)
+        {
+            if ((__flags & __diamond_shaped_mask) || info->number_to_static_ptr == 1)
+            {
+                // If there are multiple paths to a base above from here, or if
+                //    a dst_type pointing to (static_ptr, static_type) has been found,
+                //    then there is no way to break out of this loop early unless
+                //    something below detects the search is done.
+                do
+                {
+                    if (info->search_done)
+                        break;
+                    p->search_below_dst(info, current_ptr, path_below, use_strcmp);
+                } while (++p < e);
+            }
+            else if (__flags & __non_diamond_repeat_mask)
+            {
+                // There are not multiple paths to any base class from here and a
+                //   dst_type pointing to (static_ptr, static_type) has not yet been
+                //   found.
+                do
+                {
+                    if (info->search_done)
+                        break;
+                    // If we just found a dst_type with a public path to (static_ptr, static_type),
+                    //    then the only reason to continue the search is to make sure
+                    //    no other dst_type points to (static_ptr, static_type).
+                    //    If !diamond, then we don't need to search here.
+                    if (info->number_to_static_ptr == 1 &&
+                              info->path_dst_ptr_to_static_ptr == public_path)
+                        break;
+                    p->search_below_dst(info, current_ptr, path_below, use_strcmp);
+                } while (++p < e);
+            }
+            else
+            {
+                // There are no repeated types above this node.
+                // There are no nodes with multiple parents above this node.
+                // no dst_type has been found to (static_ptr, static_type)
+                do
+                {
+                    if (info->search_done)
+                        break;
+                    // If we just found a dst_type with a public path to (static_ptr, static_type),
+                    //    then the only reason to continue the search is to make sure sure
+                    //    no other dst_type points to (static_ptr, static_type).
+                    //    If !diamond, then we don't need to search here.
+                    // if we just found a dst_type with a private path to (static_ptr, static_type),
+                    //    then we're only looking for a public path to (static_ptr, static_type)
+                    //    and to check for other dst_types.
+                    //    If !diamond & !repeat, then there is not a pointer to (static_ptr, static_type)
+                    //    and not a dst_type under here.
+                    if (info->number_to_static_ptr == 1)
+                        break;
+                    p->search_below_dst(info, current_ptr, path_below, use_strcmp);
+                } while (++p < e);
+            }
+        }
+    }
+}
+
+// This is the same algorithm as __vmi_class_type_info::search_below_dst but
+//   simplified to the case that there is only a single base class.
+void
+__si_class_type_info::search_below_dst(__dynamic_cast_info* info,
+                                       const void* current_ptr,
+                                       int path_below,
+                                       bool use_strcmp) const
+{
+    if (is_equal(this, info->static_type, use_strcmp))
+        process_static_type_below_dst(info, current_ptr, path_below);
+    else if (is_equal(this, info->dst_type, use_strcmp))
+    {
+        // We've been here before if we've recorded current_ptr in one of these
+        //   two places:
+        if (current_ptr == info->dst_ptr_leading_to_static_ptr ||
+            current_ptr == info->dst_ptr_not_leading_to_static_ptr)
+        {
+            // We've seen this node before, and therefore have already searched
+            // its base classes above.
+            //  Update path to here that is "most public".
+            if (path_below == public_path)
+                info->path_dynamic_ptr_to_dst_ptr = public_path;
+        }
+        else  // We have haven't been here before
+        {
+            // Record the access path that got us here
+            //   If there is more than one dst_type this path doesn't matter.
+            info->path_dynamic_ptr_to_dst_ptr = path_below;
+            bool does_dst_type_point_to_our_static_type = false;
+            // Only search above here if dst_type derives from static_type, or
+            //    if it is unknown if dst_type derives from static_type.
+            if (info->is_dst_type_derived_from_static_type != no)
+            {
+                // Set up flags to record results from all base classes
+                bool is_dst_type_derived_from_static_type = false;
+                // Zero out found flags
+                info->found_our_static_ptr = false;
+                info->found_any_static_type = false;
+                __base_type->search_above_dst(info, current_ptr, current_ptr, public_path, use_strcmp);
+                if (info->found_any_static_type)
+                {
+                    is_dst_type_derived_from_static_type = true;
+                    if (info->found_our_static_ptr)
+                        does_dst_type_point_to_our_static_type = true;
+                }
+                // If we found no static_type,s then dst_type doesn't derive
+                //   from static_type, else it does.  Record this result so that
+                //   next time we hit a dst_type we will know not to search above
+                //   it if it doesn't derive from static_type.
+                if (is_dst_type_derived_from_static_type)
+                    info->is_dst_type_derived_from_static_type = yes;
+                else
+                    info->is_dst_type_derived_from_static_type = no;
+            }
+            if (!does_dst_type_point_to_our_static_type)
+            {
+                // We found a dst_type that doesn't point to (static_ptr, static_type)
+                // So record the address of this dst_ptr and increment the
+                // count of the number of such dst_types found in the tree.
+                info->dst_ptr_not_leading_to_static_ptr = current_ptr;
+                info->number_to_dst_ptr += 1;
+                // If there exists another dst with a private path to
+                //    (static_ptr, static_type), then the cast from
+                //     (dynamic_ptr, dynamic_type) to dst_type is now ambiguous.
+                if (info->number_to_static_ptr == 1 &&
+                        info->path_dst_ptr_to_static_ptr == not_public_path)
+                    info->search_done = true;
+            }
+        }
+    }
+    else
+    {
+        // This is not a static_type and not a dst_type
+        __base_type->search_below_dst(info, current_ptr, path_below, use_strcmp);
+    }
+}
+
+// This is the same algorithm as __vmi_class_type_info::search_below_dst but
+//   simplified to the case that there is no base class.
+void
+__class_type_info::search_below_dst(__dynamic_cast_info* info,
+                                    const void* current_ptr,
+                                    int path_below,
+                                    bool use_strcmp) const
+{
+    if (is_equal(this, info->static_type, use_strcmp))
+        process_static_type_below_dst(info, current_ptr, path_below);
+    else if (is_equal(this, info->dst_type, use_strcmp))
+    {
+        // We've been here before if we've recorded current_ptr in one of these
+        //   two places:
+        if (current_ptr == info->dst_ptr_leading_to_static_ptr ||
+            current_ptr == info->dst_ptr_not_leading_to_static_ptr)
+        {
+            // We've seen this node before, and therefore have already searched
+            // its base classes above.
+            //  Update path to here that is "most public".
+            if (path_below == public_path)
+                info->path_dynamic_ptr_to_dst_ptr = public_path;
+        }
+        else  // We have haven't been here before
+        {
+            // Record the access path that got us here
+            //   If there is more than one dst_type this path doesn't matter.
+            info->path_dynamic_ptr_to_dst_ptr = path_below;
+            // We found a dst_type that doesn't point to (static_ptr, static_type)
+            // So record the address of this dst_ptr and increment the
+            // count of the number of such dst_types found in the tree.
+            info->dst_ptr_not_leading_to_static_ptr = current_ptr;
+            info->number_to_dst_ptr += 1;
+            // If there exists another dst with a private path to
+            //    (static_ptr, static_type), then the cast from
+            //     (dynamic_ptr, dynamic_type) to dst_type is now ambiguous.
+            if (info->number_to_static_ptr == 1 &&
+                    info->path_dst_ptr_to_static_ptr == not_public_path)
+                info->search_done = true;
+            // We found that dst_type does not derive from static_type
+            info->is_dst_type_derived_from_static_type = no;
+        }
+    }
+}
+
+// Call this function when searching above a dst_type node.  This function searches
+// for a public path to (static_ptr, static_type).
+// This function is guaranteed not to find a node of type dst_type.
+// Theoretically this is a very simple function which just stops if it finds a
+// static_type node:  All the hoopla surrounding the search code is doing
+// nothing but looking for excuses to stop the search prematurely (break out of
+// the for-loop).  That is, the algorithm below is simply an optimization of this:
+// void
+// __vmi_class_type_info::search_above_dst(__dynamic_cast_info* info,
+//                                         const void* dst_ptr,
+//                                         const void* current_ptr,
+//                                         int path_below) const
+// {
+//     if (this == info->static_type)
+//         process_static_type_above_dst(info, dst_ptr, current_ptr, path_below);
+//     else
+//     {
+//         typedef const __base_class_type_info* Iter;
+//         // This is not a static_type and not a dst_type
+//         for (Iter p = __base_info, e = __base_info + __base_count; p < e; ++p)
+//         {
+//             p->search_above_dst(info, dst_ptr, current_ptr, public_path);
+//             // break out early here if you can detect it doesn't matter if you do
+//         }
+//     }
+// }
+void
+__vmi_class_type_info::search_above_dst(__dynamic_cast_info* info,
+                                        const void* dst_ptr,
+                                        const void* current_ptr,
+                                        int path_below,
+                                        bool use_strcmp) const
+{
+    if (is_equal(this, info->static_type, use_strcmp))
+        process_static_type_above_dst(info, dst_ptr, current_ptr, path_below);
+    else
+    {
+        typedef const __base_class_type_info* Iter;
+        // This is not a static_type and not a dst_type
+        // Save flags so they can be restored when returning to nodes below.
+        bool found_our_static_ptr = info->found_our_static_ptr;
+        bool found_any_static_type = info->found_any_static_type;
+        // We've found a dst_type below with a path to here.  If the path
+        //    to here is not public, there may be another path to here that
+        //    is public.  So we have to assume that the path to here is public.
+        //  We can stop looking above if:
+        //    1.  We've found a public path to (static_ptr, static_type).
+        //    2.  We've found an ambiguous cast from (static_ptr, static_type) to a dst_type.
+        //        This is detected at the (static_ptr, static_type).
+        //    3.  We can prove that there is no public path to (static_ptr, static_type)
+        //        above here.
+        const Iter e = __base_info + __base_count;
+        Iter p = __base_info;
+        // Zero out found flags
+        info->found_our_static_ptr = false;
+        info->found_any_static_type = false;
+        p->search_above_dst(info, dst_ptr, current_ptr, path_below, use_strcmp);
+        found_our_static_ptr |= info->found_our_static_ptr;
+        found_any_static_type |= info->found_any_static_type;
+        if (++p < e)
+        {
+            do
+            {
+                if (info->search_done)
+                    break;
+                if (info->found_our_static_ptr)
+                {
+                    // If we found what we're looking for, stop looking above.
+                    if (info->path_dst_ptr_to_static_ptr == public_path)
+                        break;
+                    // We found a private path to (static_ptr, static_type)
+                    //   If there is no diamond then there is only one path
+                    //   to (static_ptr, static_type) from here and we just found it.
+                    if (!(__flags & __diamond_shaped_mask))
+                        break;
+                }
+                else if (info->found_any_static_type)
+                {
+                    // If we found a static_type that isn't the one we're looking
+                    //    for, and if there are no repeated types above here,
+                    //    then stop looking.
+                    if (!(__flags & __non_diamond_repeat_mask))
+                        break;
+                }
+                // Zero out found flags
+                info->found_our_static_ptr = false;
+                info->found_any_static_type = false;
+                p->search_above_dst(info, dst_ptr, current_ptr, path_below, use_strcmp);
+                found_our_static_ptr |= info->found_our_static_ptr;
+                found_any_static_type |= info->found_any_static_type;
+            } while (++p < e);
+        }
+        // Restore flags
+        info->found_our_static_ptr = found_our_static_ptr;
+        info->found_any_static_type = found_any_static_type;
+    }
+}
+
+// This is the same algorithm as __vmi_class_type_info::search_above_dst but
+//   simplified to the case that there is only a single base class.
+void
+__si_class_type_info::search_above_dst(__dynamic_cast_info* info,
+                                       const void* dst_ptr,
+                                       const void* current_ptr,
+                                       int path_below,
+                                       bool use_strcmp) const
+{
+    if (is_equal(this, info->static_type, use_strcmp))
+        process_static_type_above_dst(info, dst_ptr, current_ptr, path_below);
+    else
+        __base_type->search_above_dst(info, dst_ptr, current_ptr, path_below, use_strcmp);
+}
+
+// This is the same algorithm as __vmi_class_type_info::search_above_dst but
+//   simplified to the case that there is no base class.
+void
+__class_type_info::search_above_dst(__dynamic_cast_info* info,
+                                    const void* dst_ptr,
+                                    const void* current_ptr,
+                                    int path_below,
+                                    bool use_strcmp) const
+{
+    if (is_equal(this, info->static_type, use_strcmp))
+        process_static_type_above_dst(info, dst_ptr, current_ptr, path_below);
+}
+
+// The search functions for __base_class_type_info are simply convenience
+//   functions for adjusting the current_ptr and path_below as the search is
+//   passed up to the base class node.
+
+void
+__base_class_type_info::search_above_dst(__dynamic_cast_info* info,
+                                         const void* dst_ptr,
+                                         const void* current_ptr,
+                                         int path_below,
+                                         bool use_strcmp) const
+{
+    ptrdiff_t offset_to_base = __offset_flags >> __offset_shift;
+    if (__offset_flags & __virtual_mask)
+    {
+        const char* vtable = *static_cast<const char*const*>(current_ptr);
+        offset_to_base = update_offset_to_base(vtable, offset_to_base);
+    }
+    __base_type->search_above_dst(info, dst_ptr,
+                                  static_cast<const char*>(current_ptr) + offset_to_base,
+                                  (__offset_flags & __public_mask) ?
+                                      path_below :
+                                      not_public_path,
+                                  use_strcmp);
+}
+
+void
+__base_class_type_info::search_below_dst(__dynamic_cast_info* info,
+                                         const void* current_ptr,
+                                         int path_below,
+                                         bool use_strcmp) const
+{
+    ptrdiff_t offset_to_base = __offset_flags >> __offset_shift;
+    if (__offset_flags & __virtual_mask)
+    {
+        const char* vtable = *static_cast<const char*const*>(current_ptr);
+        offset_to_base = update_offset_to_base(vtable, offset_to_base);
+    }
+    __base_type->search_below_dst(info,
+                                  static_cast<const char*>(current_ptr) + offset_to_base,
+                                  (__offset_flags & __public_mask) ?
+                                      path_below :
+                                      not_public_path,
+                                  use_strcmp);
+}
+
+}  // __cxxabiv1
diff --git a/app/src/main/cpp/libcxx/src/abi/private_typeinfo.h b/app/src/main/cpp/libcxx/src/abi/private_typeinfo.h
new file mode 100644
index 0000000..622e09c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/private_typeinfo.h
@@ -0,0 +1,251 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __PRIVATE_TYPEINFO_H_
+#define __PRIVATE_TYPEINFO_H_
+
+#include "__cxxabi_config.h"
+
+#include <typeinfo>
+#include <stddef.h>
+
+namespace __cxxabiv1 {
+
+class _LIBCXXABI_TYPE_VIS __shim_type_info : public std::type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__shim_type_info();
+
+  _LIBCXXABI_HIDDEN virtual void noop1() const;
+  _LIBCXXABI_HIDDEN virtual void noop2() const;
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *thrown_type,
+                                           void *&adjustedPtr) const = 0;
+};
+
+class _LIBCXXABI_TYPE_VIS __fundamental_type_info : public __shim_type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__fundamental_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+};
+
+class _LIBCXXABI_TYPE_VIS __array_type_info : public __shim_type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__array_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+};
+
+class _LIBCXXABI_TYPE_VIS __function_type_info : public __shim_type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__function_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+};
+
+class _LIBCXXABI_TYPE_VIS __enum_type_info : public __shim_type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__enum_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+};
+
+enum
+{
+    unknown = 0,
+    public_path,
+    not_public_path,
+    yes,
+    no
+};
+
+class _LIBCXXABI_TYPE_VIS __class_type_info;
+
+struct _LIBCXXABI_HIDDEN __dynamic_cast_info
+{
+// const data supplied to the search:
+
+    const __class_type_info* dst_type;
+    const void* static_ptr;
+    const __class_type_info* static_type;
+    ptrdiff_t src2dst_offset;
+
+// Data that represents the answer:
+
+    // pointer to a dst_type which has (static_ptr, static_type) above it
+    const void* dst_ptr_leading_to_static_ptr;
+    // pointer to a dst_type which does not have (static_ptr, static_type) above it
+    const void* dst_ptr_not_leading_to_static_ptr;
+
+    // The following three paths are either unknown, public_path or not_public_path.
+    // access of path from dst_ptr_leading_to_static_ptr to (static_ptr, static_type)
+    int path_dst_ptr_to_static_ptr;
+    // access of path from (dynamic_ptr, dynamic_type) to (static_ptr, static_type)
+    //    when there is no dst_type along the path
+    int path_dynamic_ptr_to_static_ptr;
+    // access of path from (dynamic_ptr, dynamic_type) to dst_type
+    //    (not used if there is a (static_ptr, static_type) above a dst_type).
+    int path_dynamic_ptr_to_dst_ptr;
+
+    // Number of dst_types below (static_ptr, static_type)
+    int number_to_static_ptr;
+    // Number of dst_types not below (static_ptr, static_type)
+    int number_to_dst_ptr;
+
+// Data that helps stop the search before the entire tree is searched:
+
+    // is_dst_type_derived_from_static_type is either unknown, yes or no.
+    int is_dst_type_derived_from_static_type;
+    // Number of dst_type in tree.  If 0, then that means unknown.
+    int number_of_dst_type;
+    // communicates to a dst_type node that (static_ptr, static_type) was found
+    //    above it.
+    bool found_our_static_ptr;
+    // communicates to a dst_type node that a static_type was found
+    //    above it, but it wasn't (static_ptr, static_type)
+    bool found_any_static_type;
+    // Set whenever a search can be stopped
+    bool search_done;
+};
+
+// Has no base class
+class _LIBCXXABI_TYPE_VIS __class_type_info : public __shim_type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__class_type_info();
+
+  _LIBCXXABI_HIDDEN void process_static_type_above_dst(__dynamic_cast_info *,
+                                                       const void *,
+                                                       const void *, int) const;
+  _LIBCXXABI_HIDDEN void process_static_type_below_dst(__dynamic_cast_info *,
+                                                       const void *, int) const;
+  _LIBCXXABI_HIDDEN void process_found_base_class(__dynamic_cast_info *, void *,
+                                                  int) const;
+  _LIBCXXABI_HIDDEN virtual void search_above_dst(__dynamic_cast_info *,
+                                                  const void *, const void *,
+                                                  int, bool) const;
+  _LIBCXXABI_HIDDEN virtual void
+  search_below_dst(__dynamic_cast_info *, const void *, int, bool) const;
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+  _LIBCXXABI_HIDDEN virtual void
+  has_unambiguous_public_base(__dynamic_cast_info *, void *, int) const;
+};
+
+// Has one non-virtual public base class at offset zero
+class _LIBCXXABI_TYPE_VIS __si_class_type_info : public __class_type_info {
+public:
+  const __class_type_info *__base_type;
+
+  _LIBCXXABI_HIDDEN virtual ~__si_class_type_info();
+
+  _LIBCXXABI_HIDDEN virtual void search_above_dst(__dynamic_cast_info *,
+                                                  const void *, const void *,
+                                                  int, bool) const;
+  _LIBCXXABI_HIDDEN virtual void
+  search_below_dst(__dynamic_cast_info *, const void *, int, bool) const;
+  _LIBCXXABI_HIDDEN virtual void
+  has_unambiguous_public_base(__dynamic_cast_info *, void *, int) const;
+};
+
+struct _LIBCXXABI_HIDDEN __base_class_type_info
+{
+public:
+    const __class_type_info* __base_type;
+    long __offset_flags;
+
+    enum __offset_flags_masks
+    {
+        __virtual_mask = 0x1,
+        __public_mask  = 0x2, // base is public
+        __offset_shift = 8
+    };
+
+    void search_above_dst(__dynamic_cast_info*, const void*, const void*, int, bool) const;
+    void search_below_dst(__dynamic_cast_info*, const void*, int, bool) const;
+    void has_unambiguous_public_base(__dynamic_cast_info*, void*, int) const;
+};
+
+// Has one or more base classes
+class _LIBCXXABI_TYPE_VIS __vmi_class_type_info : public __class_type_info {
+public:
+  unsigned int __flags;
+  unsigned int __base_count;
+  __base_class_type_info __base_info[1];
+
+  enum __flags_masks {
+    __non_diamond_repeat_mask = 0x1, // has two or more distinct base class
+                                     //    objects of the same type
+    __diamond_shaped_mask = 0x2      // has base class object with two or
+                                     //    more derived objects
+  };
+
+  _LIBCXXABI_HIDDEN virtual ~__vmi_class_type_info();
+
+  _LIBCXXABI_HIDDEN virtual void search_above_dst(__dynamic_cast_info *,
+                                                  const void *, const void *,
+                                                  int, bool) const;
+  _LIBCXXABI_HIDDEN virtual void
+  search_below_dst(__dynamic_cast_info *, const void *, int, bool) const;
+  _LIBCXXABI_HIDDEN virtual void
+  has_unambiguous_public_base(__dynamic_cast_info *, void *, int) const;
+};
+
+class _LIBCXXABI_TYPE_VIS __pbase_type_info : public __shim_type_info {
+public:
+  unsigned int __flags;
+  const __shim_type_info *__pointee;
+
+  enum __masks {
+    __const_mask = 0x1,
+    __volatile_mask = 0x2,
+    __restrict_mask = 0x4,
+    __incomplete_mask = 0x8,
+    __incomplete_class_mask = 0x10,
+    __transaction_safe_mask = 0x20,
+    // This implements the following proposal from cxx-abi-dev (not yet part of
+    // the ABI document):
+    //
+    //   http://sourcerytools.com/pipermail/cxx-abi-dev/2016-October/002986.html
+    //
+    // This is necessary for support of http://wg21.link/p0012, which permits
+    // throwing noexcept function and member function pointers and catching
+    // them as non-noexcept pointers.
+    __noexcept_mask = 0x40,
+
+    // Flags that cannot be removed by a standard conversion.
+    __no_remove_flags_mask = __const_mask | __volatile_mask | __restrict_mask,
+    // Flags that cannot be added by a standard conversion.
+    __no_add_flags_mask = __transaction_safe_mask | __noexcept_mask
+  };
+
+  _LIBCXXABI_HIDDEN virtual ~__pbase_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+};
+
+class _LIBCXXABI_TYPE_VIS __pointer_type_info : public __pbase_type_info {
+public:
+  _LIBCXXABI_HIDDEN virtual ~__pointer_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+  _LIBCXXABI_HIDDEN bool can_catch_nested(const __shim_type_info *) const;
+};
+
+class _LIBCXXABI_TYPE_VIS __pointer_to_member_type_info
+    : public __pbase_type_info {
+public:
+  const __class_type_info *__context;
+
+  _LIBCXXABI_HIDDEN virtual ~__pointer_to_member_type_info();
+  _LIBCXXABI_HIDDEN virtual bool can_catch(const __shim_type_info *,
+                                           void *&) const;
+  _LIBCXXABI_HIDDEN bool can_catch_nested(const __shim_type_info *) const;
+};
+
+}  // __cxxabiv1
+
+#endif // __PRIVATE_TYPEINFO_H_
diff --git a/app/src/main/cpp/libcxx/src/abi/stdlib_exception.cpp b/app/src/main/cpp/libcxx/src/abi/stdlib_exception.cpp
new file mode 100644
index 0000000..b1fc21f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/stdlib_exception.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <new>
+#include <exception>
+
+namespace std
+{
+
+// exception
+
+exception::~exception() noexcept
+{
+}
+
+const char* exception::what() const noexcept
+{
+  return "std::exception";
+}
+
+// bad_exception
+
+bad_exception::~bad_exception() noexcept
+{
+}
+
+const char* bad_exception::what() const noexcept
+{
+  return "std::bad_exception";
+}
+
+
+//  bad_alloc
+
+bad_alloc::bad_alloc() noexcept
+{
+}
+
+bad_alloc::~bad_alloc() noexcept
+{
+}
+
+const char*
+bad_alloc::what() const noexcept
+{
+    return "std::bad_alloc";
+}
+
+// bad_array_new_length
+
+bad_array_new_length::bad_array_new_length() noexcept
+{
+}
+
+bad_array_new_length::~bad_array_new_length() noexcept
+{
+}
+
+const char*
+bad_array_new_length::what() const noexcept
+{
+    return "bad_array_new_length";
+}
+
+}  // std
diff --git a/app/src/main/cpp/libcxx/src/abi/stdlib_new_delete.cpp b/app/src/main/cpp/libcxx/src/abi/stdlib_new_delete.cpp
new file mode 100644
index 0000000..4a664e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/stdlib_new_delete.cpp
@@ -0,0 +1,255 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//
+// This file implements the new and delete operators.
+//===----------------------------------------------------------------------===//
+
+#include "__cxxabi_config.h"
+#include <new>
+#include <cstdlib>
+
+#if !defined(_THROW_BAD_ALLOC) || !defined(_LIBCXXABI_WEAK)
+#error The _THROW_BAD_ALLOC and _LIBCXXABI_WEAK libc++ macros must \
+       already be defined by libc++.
+#endif
+// Implement all new and delete operators as weak definitions
+// in this shared library, so that they can be overridden by programs
+// that define non-weak copies of the functions.
+
+_LIBCXXABI_WEAK
+void *
+operator new(std::size_t size) _THROW_BAD_ALLOC
+{
+    if (size == 0)
+        size = 1;
+    void* p;
+    while ((p = ::malloc(size)) == nullptr)
+    {
+        // If malloc fails and there is a new_handler,
+        // call it to try free up memory.
+        std::new_handler nh = std::get_new_handler();
+        if (nh)
+            nh();
+        else
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+            throw std::bad_alloc();
+#else
+            break;
+#endif
+    }
+    return p;
+}
+
+_LIBCXXABI_WEAK
+void*
+operator new(size_t size, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+        p = ::operator new(size);
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCXXABI_WEAK
+void*
+operator new[](size_t size) _THROW_BAD_ALLOC
+{
+    return ::operator new(size);
+}
+
+_LIBCXXABI_WEAK
+void*
+operator new[](size_t size, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+        p = ::operator new[](size);
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete(void* ptr) noexcept
+{
+    ::free(ptr);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete(void* ptr, const std::nothrow_t&) noexcept
+{
+    ::operator delete(ptr);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete(void* ptr, size_t) noexcept
+{
+    ::operator delete(ptr);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete[] (void* ptr) noexcept
+{
+    ::operator delete(ptr);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete[] (void* ptr, const std::nothrow_t&) noexcept
+{
+    ::operator delete[](ptr);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete[] (void* ptr, size_t) noexcept
+{
+    ::operator delete[](ptr);
+}
+
+#if !defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION)
+
+_LIBCXXABI_WEAK
+void *
+operator new(std::size_t size, std::align_val_t alignment) _THROW_BAD_ALLOC
+{
+    if (size == 0)
+        size = 1;
+    if (static_cast<size_t>(alignment) < sizeof(void*))
+      alignment = std::align_val_t(sizeof(void*));
+
+    // Try allocating memory. If allocation fails and there is a new_handler,
+    // call it to try free up memory, and try again until it succeeds, or until
+    // the new_handler decides to terminate.
+    //
+    // If allocation fails and there is no new_handler, we throw bad_alloc
+    // (or return nullptr if exceptions are disabled).
+    void* p;
+    while ((p = std::__libcpp_aligned_alloc(static_cast<std::size_t>(alignment), size)) == nullptr)
+    {
+        std::new_handler nh = std::get_new_handler();
+        if (nh)
+            nh();
+        else {
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+            throw std::bad_alloc();
+#else
+            break;
+#endif
+        }
+    }
+    return p;
+}
+
+_LIBCXXABI_WEAK
+void*
+operator new(size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+        p = ::operator new(size, alignment);
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCXXABI_WEAK
+void*
+operator new[](size_t size, std::align_val_t alignment) _THROW_BAD_ALLOC
+{
+    return ::operator new(size, alignment);
+}
+
+_LIBCXXABI_WEAK
+void*
+operator new[](size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+        p = ::operator new[](size, alignment);
+#ifndef _LIBCXXABI_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCXXABI_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete(void* ptr, std::align_val_t) noexcept
+{
+    std::__libcpp_aligned_free(ptr);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete(void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    ::operator delete(ptr, alignment);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete(void* ptr, size_t, std::align_val_t alignment) noexcept
+{
+    ::operator delete(ptr, alignment);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete[] (void* ptr, std::align_val_t alignment) noexcept
+{
+    ::operator delete(ptr, alignment);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete[] (void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    ::operator delete[](ptr, alignment);
+}
+
+_LIBCXXABI_WEAK
+void
+operator delete[] (void* ptr, size_t, std::align_val_t alignment) noexcept
+{
+    ::operator delete[](ptr, alignment);
+}
+
+#endif // !_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
diff --git a/app/src/main/cpp/libcxx/src/abi/stdlib_stdexcept.cpp b/app/src/main/cpp/libcxx/src/abi/stdlib_stdexcept.cpp
new file mode 100644
index 0000000..92f7a6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/stdlib_stdexcept.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "stdexcept"
+#include "new"
+#include <cstdlib>
+#include <cstring>
+#include <cstdint>
+#include <cstddef>
+#include "include/refstring.h" // from libc++
+
+static_assert(sizeof(std::__libcpp_refstring) == sizeof(const char *), "");
+
+namespace std  // purposefully not using versioning namespace
+{
+
+logic_error::~logic_error() noexcept {}
+
+const char*
+logic_error::what() const noexcept
+{
+    return __imp_.c_str();
+}
+
+runtime_error::~runtime_error() noexcept {}
+
+const char*
+runtime_error::what() const noexcept
+{
+    return __imp_.c_str();
+}
+
+domain_error::~domain_error() noexcept {}
+invalid_argument::~invalid_argument() noexcept {}
+length_error::~length_error() noexcept {}
+out_of_range::~out_of_range() noexcept {}
+
+range_error::~range_error() noexcept {}
+overflow_error::~overflow_error() noexcept {}
+underflow_error::~underflow_error() noexcept {}
+
+}  // std
diff --git a/app/src/main/cpp/libcxx/src/abi/stdlib_typeinfo.cpp b/app/src/main/cpp/libcxx/src/abi/stdlib_typeinfo.cpp
new file mode 100644
index 0000000..6e54996
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/abi/stdlib_typeinfo.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <typeinfo>
+
+namespace std
+{
+
+// type_info
+
+type_info::~type_info()
+{
+}
+
+// bad_cast
+
+bad_cast::bad_cast() noexcept
+{
+}
+
+bad_cast::~bad_cast() noexcept
+{
+}
+
+const char*
+bad_cast::what() const noexcept
+{
+  return "std::bad_cast";
+}
+
+// bad_typeid
+
+bad_typeid::bad_typeid() noexcept
+{
+}
+
+bad_typeid::~bad_typeid() noexcept
+{
+}
+
+const char*
+bad_typeid::what() const noexcept
+{
+  return "std::bad_typeid";
+}
+
+}  // std
diff --git a/app/src/main/cpp/libcxx/src/algorithm.cpp b/app/src/main/cpp/libcxx/src/algorithm.cpp
new file mode 100644
index 0000000..bd47e08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/algorithm.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// TODO(varconst): this currently doesn't benefit `ranges::sort` because it uses `ranges::less` instead of `__less`.
+
+template void __sort<__less<char>&, char*>(char*, char*, __less<char>&);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template void __sort<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&);
+#endif
+template void __sort<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&);
+template void __sort<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&);
+template void __sort<__less<short>&, short*>(short*, short*, __less<short>&);
+template void __sort<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&);
+template void __sort<__less<int>&, int*>(int*, int*, __less<int>&);
+template void __sort<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&);
+template void __sort<__less<long>&, long*>(long*, long*, __less<long>&);
+template void __sort<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&);
+template void __sort<__less<long long>&, long long*>(long long*, long long*, __less<long long>&);
+template void __sort<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&);
+template void __sort<__less<float>&, float*>(float*, float*, __less<float>&);
+template void __sort<__less<double>&, double*>(double*, double*, __less<double>&);
+template void __sort<__less<long double>&, long double*>(long double*, long double*, __less<long double>&);
+
+template bool __insertion_sort_incomplete<__less<char>&, char*>(char*, char*, __less<char>&);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template bool __insertion_sort_incomplete<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&);
+#endif
+template bool __insertion_sort_incomplete<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&);
+template bool __insertion_sort_incomplete<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&);
+template bool __insertion_sort_incomplete<__less<short>&, short*>(short*, short*, __less<short>&);
+template bool __insertion_sort_incomplete<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&);
+template bool __insertion_sort_incomplete<__less<int>&, int*>(int*, int*, __less<int>&);
+template bool __insertion_sort_incomplete<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&);
+template bool __insertion_sort_incomplete<__less<long>&, long*>(long*, long*, __less<long>&);
+template bool __insertion_sort_incomplete<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&);
+template bool __insertion_sort_incomplete<__less<long long>&, long long*>(long long*, long long*, __less<long long>&);
+template bool __insertion_sort_incomplete<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&);
+template bool __insertion_sort_incomplete<__less<float>&, float*>(float*, float*, __less<float>&);
+template bool __insertion_sort_incomplete<__less<double>&, double*>(double*, double*, __less<double>&);
+template bool __insertion_sort_incomplete<__less<long double>&, long double*>(long double*, long double*, __less<long double>&);
+
+template unsigned __sort5<__less<long double>&, long double*>(long double*, long double*, long double*, long double*, long double*, __less<long double>&);
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/any.cpp b/app/src/main/cpp/libcxx/src/any.cpp
new file mode 100644
index 0000000..9a101b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/any.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <any>
+
+namespace std {
+const char* bad_any_cast::what() const noexcept {
+    return "bad any cast";
+}
+}
+
+
+#include <experimental/__config>
+
+//  Preserve std::experimental::any_bad_cast for ABI compatibility
+//  Even though it no longer exists in a header file
+_LIBCPP_BEGIN_NAMESPACE_LFTS
+
+class _LIBCPP_EXCEPTION_ABI _LIBCPP_AVAILABILITY_BAD_ANY_CAST bad_any_cast : public bad_cast
+{
+public:
+    virtual const char* what() const noexcept;
+};
+
+const char* bad_any_cast::what() const noexcept {
+    return "bad any cast";
+}
+
+_LIBCPP_END_NAMESPACE_LFTS
diff --git a/app/src/main/cpp/libcxx/src/atomic.cpp b/app/src/main/cpp/libcxx/src/atomic.cpp
new file mode 100644
index 0000000..7777e88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/atomic.cpp
@@ -0,0 +1,215 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+#include <atomic>
+#include <climits>
+#include <functional>
+#include <thread>
+
+#ifdef __linux__
+
+#include <unistd.h>
+#include <linux/futex.h>
+#include <sys/syscall.h>
+
+// libc++ uses SYS_futex as a universal syscall name. However, on 32 bit architectures
+// with a 64 bit time_t, we need to specify SYS_futex_time64.
+#if !defined(SYS_futex) && defined(SYS_futex_time64)
+# define SYS_futex SYS_futex_time64
+#endif
+
+#elif defined(__FreeBSD__)
+
+#include <sys/types.h>
+#include <sys/umtx.h>
+
+#else // <- Add other operating systems here
+
+// Baseline needs no new headers
+
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifdef __linux__
+
+static void __libcpp_platform_wait_on_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              __cxx_contention_t __val)
+{
+    static constexpr timespec __timeout = { 2, 0 };
+    syscall(SYS_futex, __ptr, FUTEX_WAIT_PRIVATE, __val, &__timeout, 0, 0);
+}
+
+static void __libcpp_platform_wake_by_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              bool __notify_one)
+{
+    syscall(SYS_futex, __ptr, FUTEX_WAKE_PRIVATE, __notify_one ? 1 : INT_MAX, 0, 0, 0);
+}
+
+#elif defined(__APPLE__) && defined(_LIBCPP_USE_ULOCK)
+
+extern "C" int __ulock_wait(uint32_t operation, void *addr, uint64_t value,
+                            uint32_t timeout); /* timeout is specified in microseconds */
+extern "C" int __ulock_wake(uint32_t operation, void *addr, uint64_t wake_value);
+
+#define UL_COMPARE_AND_WAIT 1
+#define ULF_WAKE_ALL        0x00000100
+
+static void __libcpp_platform_wait_on_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              __cxx_contention_t __val)
+{
+    __ulock_wait(UL_COMPARE_AND_WAIT,
+                 const_cast<__cxx_atomic_contention_t*>(__ptr), __val, 0);
+}
+
+static void __libcpp_platform_wake_by_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              bool __notify_one)
+{
+    __ulock_wake(UL_COMPARE_AND_WAIT | (__notify_one ? 0 : ULF_WAKE_ALL),
+                 const_cast<__cxx_atomic_contention_t*>(__ptr), 0);
+}
+
+#elif defined(__FreeBSD__)
+
+static void __libcpp_platform_wait_on_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              __cxx_contention_t __val)
+{
+    _umtx_op(const_cast<__cxx_atomic_contention_t*>(__ptr),
+             UMTX_OP_WAIT_UINT_PRIVATE, __val, NULL, NULL);
+}
+
+static void __libcpp_platform_wake_by_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              bool __notify_one)
+{
+    _umtx_op(const_cast<__cxx_atomic_contention_t*>(__ptr),
+             UMTX_OP_WAKE_PRIVATE, __notify_one ? 1 : INT_MAX, NULL, NULL);
+}
+
+#else // <- Add other operating systems here
+
+// Baseline is just a timed backoff
+
+static void __libcpp_platform_wait_on_address(__cxx_atomic_contention_t const volatile* __ptr,
+                                              __cxx_contention_t __val)
+{
+    __libcpp_thread_poll_with_backoff([=]() -> bool {
+        return !__cxx_nonatomic_compare_equal(__cxx_atomic_load(__ptr, memory_order_relaxed), __val);
+    }, __libcpp_timed_backoff_policy());
+}
+
+static void __libcpp_platform_wake_by_address(__cxx_atomic_contention_t const volatile*, bool) { }
+
+#endif // __linux__
+
+static constexpr size_t __libcpp_contention_table_size = (1 << 8);  /* < there's no magic in this number */
+
+struct alignas(64) /*  aim to avoid false sharing */ __libcpp_contention_table_entry
+{
+    __cxx_atomic_contention_t __contention_state;
+    __cxx_atomic_contention_t __platform_state;
+    inline constexpr __libcpp_contention_table_entry() :
+        __contention_state(0), __platform_state(0) { }
+};
+
+static __libcpp_contention_table_entry __libcpp_contention_table[ __libcpp_contention_table_size ];
+
+static hash<void const volatile*> __libcpp_contention_hasher;
+
+static __libcpp_contention_table_entry* __libcpp_contention_state(void const volatile * p)
+{
+    return &__libcpp_contention_table[__libcpp_contention_hasher(p) & (__libcpp_contention_table_size - 1)];
+}
+
+/* Given an atomic to track contention and an atomic to actually wait on, which may be
+   the same atomic, we try to detect contention to avoid spuriously calling the platform. */
+
+static void __libcpp_contention_notify(__cxx_atomic_contention_t volatile* __contention_state,
+                                       __cxx_atomic_contention_t const volatile* __platform_state,
+                                       bool __notify_one)
+{
+    if(0 != __cxx_atomic_load(__contention_state, memory_order_seq_cst))
+        // We only call 'wake' if we consumed a contention bit here.
+        __libcpp_platform_wake_by_address(__platform_state, __notify_one);
+}
+static __cxx_contention_t __libcpp_contention_monitor_for_wait(__cxx_atomic_contention_t volatile* __contention_state,
+                                                               __cxx_atomic_contention_t const volatile* __platform_state)
+{
+    // We will monitor this value.
+    return __cxx_atomic_load(__platform_state, memory_order_acquire);
+}
+static void __libcpp_contention_wait(__cxx_atomic_contention_t volatile* __contention_state,
+                                     __cxx_atomic_contention_t const volatile* __platform_state,
+                                     __cxx_contention_t __old_value)
+{
+    __cxx_atomic_fetch_add(__contention_state, __cxx_contention_t(1), memory_order_seq_cst);
+    // We sleep as long as the monitored value hasn't changed.
+    __libcpp_platform_wait_on_address(__platform_state, __old_value);
+    __cxx_atomic_fetch_sub(__contention_state, __cxx_contention_t(1), memory_order_release);
+}
+
+/* When the incoming atomic is the wrong size for the platform wait size, need to
+   launder the value sequence through an atomic from our table. */
+
+static void __libcpp_atomic_notify(void const volatile* __location)
+{
+    auto const __entry = __libcpp_contention_state(__location);
+    // The value sequence laundering happens on the next line below.
+    __cxx_atomic_fetch_add(&__entry->__platform_state, __cxx_contention_t(1), memory_order_release);
+    __libcpp_contention_notify(&__entry->__contention_state,
+                               &__entry->__platform_state,
+                               false /* when laundering, we can't handle notify_one */);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+void __cxx_atomic_notify_one(void const volatile* __location)
+    { __libcpp_atomic_notify(__location); }
+_LIBCPP_EXPORTED_FROM_ABI
+void __cxx_atomic_notify_all(void const volatile* __location)
+    { __libcpp_atomic_notify(__location); }
+_LIBCPP_EXPORTED_FROM_ABI
+__cxx_contention_t __libcpp_atomic_monitor(void const volatile* __location)
+{
+    auto const __entry = __libcpp_contention_state(__location);
+    return __libcpp_contention_monitor_for_wait(&__entry->__contention_state, &__entry->__platform_state);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+void __libcpp_atomic_wait(void const volatile* __location, __cxx_contention_t __old_value)
+{
+    auto const __entry = __libcpp_contention_state(__location);
+    __libcpp_contention_wait(&__entry->__contention_state, &__entry->__platform_state, __old_value);
+}
+
+/* When the incoming atomic happens to be the platform wait size, we still need to use the
+   table for the contention detection, but we can use the atomic directly for the wait. */
+
+_LIBCPP_EXPORTED_FROM_ABI
+void __cxx_atomic_notify_one(__cxx_atomic_contention_t const volatile* __location)
+{
+    __libcpp_contention_notify(&__libcpp_contention_state(__location)->__contention_state, __location, true);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+void __cxx_atomic_notify_all(__cxx_atomic_contention_t const volatile* __location)
+{
+    __libcpp_contention_notify(&__libcpp_contention_state(__location)->__contention_state, __location, false);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+__cxx_contention_t __libcpp_atomic_monitor(__cxx_atomic_contention_t const volatile* __location)
+{
+    return __libcpp_contention_monitor_for_wait(&__libcpp_contention_state(__location)->__contention_state, __location);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+void __libcpp_atomic_wait(__cxx_atomic_contention_t const volatile* __location, __cxx_contention_t __old_value)
+{
+    __libcpp_contention_wait(&__libcpp_contention_state(__location)->__contention_state, __location, __old_value);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif //_LIBCPP_HAS_NO_THREADS
diff --git a/app/src/main/cpp/libcxx/src/barrier.cpp b/app/src/main/cpp/libcxx/src/barrier.cpp
new file mode 100644
index 0000000..8ce2c04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/barrier.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+#include <barrier>
+#include <thread>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if !defined(_LIBCPP_HAS_NO_TREE_BARRIER)
+
+class __barrier_algorithm_base {
+public:
+    struct alignas(64) /* naturally-align the heap state */ __state_t
+    {
+        struct {
+          __atomic_base<__barrier_phase_t> __phase{0};
+        } __tickets[64];
+    };
+
+    ptrdiff_t&              __expected;
+    unique_ptr<__state_t[]> __state;
+
+    _LIBCPP_HIDDEN
+    __barrier_algorithm_base(ptrdiff_t& __expected)
+        : __expected(__expected)
+    {
+        size_t const __count = (__expected + 1) >> 1;
+        __state = unique_ptr<__state_t[]>(new __state_t[__count]);
+    }
+    _LIBCPP_HIDDEN
+    bool __arrive(__barrier_phase_t __old_phase)
+    {
+        __barrier_phase_t const __half_step = __old_phase + 1,
+                                __full_step = __old_phase + 2;
+        size_t __current_expected = __expected,
+            __current = hash<thread::id>()(this_thread::get_id()) % ((__expected + 1) >> 1);
+        for(int __round = 0;; ++__round) {
+            if(__current_expected <= 1)
+                return true;
+            size_t const __end_node = ((__current_expected + 1) >> 1),
+                         __last_node = __end_node - 1;
+            for(;;++__current) {
+                if(__current == __end_node)
+                __current = 0;
+                __barrier_phase_t expect = __old_phase;
+                if(__current == __last_node && (__current_expected & 1))
+                {
+                    if(__state[__current].__tickets[__round].__phase.compare_exchange_strong(expect, __full_step, memory_order_acq_rel))
+                        break;    // I'm 1 in 1, go to next __round
+                }
+                else if(__state[__current].__tickets[__round].__phase.compare_exchange_strong(expect, __half_step, memory_order_acq_rel))
+                {
+                    return false; // I'm 1 in 2, done with arrival
+                }
+                else if(expect == __half_step)
+                {
+                    if(__state[__current].__tickets[__round].__phase.compare_exchange_strong(expect, __full_step, memory_order_acq_rel))
+                        break;    // I'm 2 in 2, go to next __round
+                }
+            }
+            __current_expected = __last_node + 1;
+            __current >>= 1;
+        }
+    }
+};
+
+_LIBCPP_EXPORTED_FROM_ABI
+__barrier_algorithm_base * __construct_barrier_algorithm_base(ptrdiff_t& __expected)
+{
+    return new __barrier_algorithm_base(__expected);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+bool __arrive_barrier_algorithm_base(__barrier_algorithm_base* __barrier,
+                                     __barrier_phase_t __old_phase)
+{
+    return __barrier->__arrive(__old_phase);
+}
+_LIBCPP_EXPORTED_FROM_ABI
+void __destroy_barrier_algorithm_base(__barrier_algorithm_base* __barrier)
+{
+    delete __barrier;
+}
+
+#endif // !defined(_LIBCPP_HAS_NO_TREE_BARRIER)
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif //_LIBCPP_HAS_NO_THREADS
diff --git a/app/src/main/cpp/libcxx/src/bind.cpp b/app/src/main/cpp/libcxx/src/bind.cpp
new file mode 100644
index 0000000..0e217e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/bind.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <functional>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace placeholders
+{
+
+const __ph<1>   _1{};
+const __ph<2>   _2{};
+const __ph<3>   _3{};
+const __ph<4>   _4{};
+const __ph<5>   _5{};
+const __ph<6>   _6{};
+const __ph<7>   _7{};
+const __ph<8>   _8{};
+const __ph<9>   _9{};
+const __ph<10> _10{};
+
+}  // placeholders
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/charconv.cpp b/app/src/main/cpp/libcxx/src/charconv.cpp
new file mode 100644
index 0000000..d01ecdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/charconv.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <charconv>
+#include <string.h>
+
+#include "include/to_chars_floating_point.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10
+
+namespace __itoa
+{
+
+_LIBCPP_FUNC_VIS char*
+__u32toa(uint32_t value, char* buffer) noexcept
+{
+  return __base_10_u32(buffer, value);
+}
+
+_LIBCPP_FUNC_VIS char*
+__u64toa(uint64_t value, char* buffer) noexcept
+{
+  return __base_10_u64(buffer, value);
+}
+
+}  // namespace __itoa
+
+#endif // _LIBCPP_ABI_DO_NOT_EXPORT_TO_CHARS_BASE_10
+
+// The original version of floating-point to_chars was written by Microsoft and
+// contributed with the following license.
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// This implementation is dedicated to the memory of Mary and Thavatchai.
+
+to_chars_result to_chars(char* __first, char* __last, float __value) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, __value, chars_format{}, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, double __value) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, __value, chars_format{}, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, long double __value) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Plain>(__first, __last, static_cast<double>(__value),
+                                                                 chars_format{}, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, float __value, chars_format __fmt) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, __value, __fmt, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, double __value, chars_format __fmt) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, __value, __fmt, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, long double __value, chars_format __fmt) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_only>(__first, __last, static_cast<double>(__value),
+                                                                       __fmt, 0);
+}
+
+to_chars_result to_chars(char* __first, char* __last, float __value, chars_format __fmt, int __precision) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(__first, __last, __value, __fmt,
+                                                                            __precision);
+}
+
+to_chars_result to_chars(char* __first, char* __last, double __value, chars_format __fmt, int __precision) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(__first, __last, __value, __fmt,
+                                                                            __precision);
+}
+
+to_chars_result to_chars(char* __first, char* __last, long double __value, chars_format __fmt, int __precision) {
+  return _Floating_to_chars<_Floating_to_chars_overload::_Format_precision>(
+      __first, __last, static_cast<double>(__value), __fmt, __precision);
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/chrono.cpp b/app/src/main/cpp/libcxx/src/chrono.cpp
new file mode 100644
index 0000000..0af89d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/chrono.cpp
@@ -0,0 +1,309 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#if defined(__MVS__)
+// As part of monotonic clock support on z/OS we need macro _LARGE_TIME_API
+// to be defined before any system header to include definition of struct timespec64.
+#define _LARGE_TIME_API
+#endif
+
+#include <cerrno>        // errno
+#include <chrono>
+#include <system_error>  // __throw_system_error
+
+#if defined(__MVS__)
+#include <__support/ibm/gettod_zos.h> // gettimeofdayMonotonic
+#endif
+
+#include <time.h>        // clock_gettime and CLOCK_{MONOTONIC,REALTIME,MONOTONIC_RAW}
+#include "include/apple_availability.h"
+
+#if __has_include(<unistd.h>)
+# include <unistd.h>
+#endif
+
+#if __has_include(<sys/time.h>)
+# include <sys/time.h> // for gettimeofday and timeval
+#endif
+
+#if !defined(__APPLE__) && defined(_POSIX_TIMERS) && _POSIX_TIMERS > 0
+# define _LIBCPP_USE_CLOCK_GETTIME
+#endif
+
+#if defined(_LIBCPP_WIN32API)
+#  define WIN32_LEAN_AND_MEAN
+#  define VC_EXTRA_LEAN
+#  include <windows.h>
+#  if _WIN32_WINNT >= _WIN32_WINNT_WIN8
+#    include <winapifamily.h>
+#  endif
+#endif // defined(_LIBCPP_WIN32API)
+
+#if defined(__Fuchsia__)
+#  include <zircon/syscalls.h>
+#endif
+
+#if __has_include(<mach/mach_time.h>)
+# include <mach/mach_time.h>
+#endif
+
+#if defined(__ELF__) && defined(_LIBCPP_LINK_RT_LIB)
+#  pragma comment(lib, "rt")
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace chrono
+{
+
+//
+// system_clock
+//
+
+#if defined(_LIBCPP_WIN32API)
+
+#if _WIN32_WINNT < _WIN32_WINNT_WIN8
+
+namespace {
+
+typedef void(WINAPI *GetSystemTimeAsFileTimePtr)(LPFILETIME);
+
+class GetSystemTimeInit {
+public:
+  GetSystemTimeInit() {
+    fp = (GetSystemTimeAsFileTimePtr)GetProcAddress(
+        GetModuleHandleW(L"kernel32.dll"), "GetSystemTimePreciseAsFileTime");
+    if (fp == nullptr)
+      fp = GetSystemTimeAsFileTime;
+  }
+  GetSystemTimeAsFileTimePtr fp;
+};
+
+// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority
+// attribute with a value that's reserved for the implementation (we're the implementation).
+#include "chrono_system_time_init.h"
+} // namespace
+
+#endif
+
+static system_clock::time_point __libcpp_system_clock_now() {
+  // FILETIME is in 100ns units
+  using filetime_duration =
+      _VSTD::chrono::duration<__int64,
+                              _VSTD::ratio_multiply<_VSTD::ratio<100, 1>,
+                                                    nanoseconds::period>>;
+
+  // The Windows epoch is Jan 1 1601, the Unix epoch Jan 1 1970.
+  static _LIBCPP_CONSTEXPR const seconds nt_to_unix_epoch{11644473600};
+
+  FILETIME ft;
+#if (_WIN32_WINNT >= _WIN32_WINNT_WIN8 && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)) || \
+    (_WIN32_WINNT >= _WIN32_WINNT_WIN10)
+  GetSystemTimePreciseAsFileTime(&ft);
+#elif !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+  GetSystemTimeAsFileTime(&ft);
+#else
+  GetSystemTimeAsFileTimeFunc.fp(&ft);
+#endif
+
+  filetime_duration d{(static_cast<__int64>(ft.dwHighDateTime) << 32) |
+                       static_cast<__int64>(ft.dwLowDateTime)};
+  return system_clock::time_point(duration_cast<system_clock::duration>(d - nt_to_unix_epoch));
+}
+
+#elif defined(CLOCK_REALTIME) && defined(_LIBCPP_USE_CLOCK_GETTIME)
+
+static system_clock::time_point __libcpp_system_clock_now() {
+  struct timespec tp;
+  if (0 != clock_gettime(CLOCK_REALTIME, &tp))
+    __throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed");
+  return system_clock::time_point(seconds(tp.tv_sec) + microseconds(tp.tv_nsec / 1000));
+}
+
+#else
+
+static system_clock::time_point __libcpp_system_clock_now() {
+    timeval tv;
+    gettimeofday(&tv, 0);
+    return system_clock::time_point(seconds(tv.tv_sec) + microseconds(tv.tv_usec));
+}
+
+#endif
+
+const bool system_clock::is_steady;
+
+system_clock::time_point
+system_clock::now() noexcept
+{
+    return __libcpp_system_clock_now();
+}
+
+time_t
+system_clock::to_time_t(const time_point& t) noexcept
+{
+    return time_t(duration_cast<seconds>(t.time_since_epoch()).count());
+}
+
+system_clock::time_point
+system_clock::from_time_t(time_t t) noexcept
+{
+    return system_clock::time_point(seconds(t));
+}
+
+//
+// steady_clock
+//
+// Warning:  If this is not truly steady, then it is non-conforming.  It is
+//  better for it to not exist and have the rest of libc++ use system_clock
+//  instead.
+//
+
+#ifndef _LIBCPP_HAS_NO_MONOTONIC_CLOCK
+
+#if defined(__APPLE__)
+
+// TODO(ldionne):
+// This old implementation of steady_clock is retained until Chrome drops supports
+// for macOS < 10.12. The issue is that they link libc++ statically into their
+// application, which means that libc++ must support being built for such deployment
+// targets. See https://llvm.org/D74489 for details.
+#if (defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101200) || \
+    (defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ < 100000) || \
+    (defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ < 100000) || \
+    (defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ < 30000)
+# define _LIBCPP_USE_OLD_MACH_ABSOLUTE_TIME
+#endif
+
+#if defined(_LIBCPP_USE_OLD_MACH_ABSOLUTE_TIME)
+
+//   mach_absolute_time() * MachInfo.numer / MachInfo.denom is the number of
+//   nanoseconds since the computer booted up.  MachInfo.numer and MachInfo.denom
+//   are run time constants supplied by the OS.  This clock has no relationship
+//   to the Gregorian calendar.  It's main use is as a high resolution timer.
+
+// MachInfo.numer / MachInfo.denom is often 1 on the latest equipment.  Specialize
+//   for that case as an optimization.
+
+static steady_clock::rep steady_simplified() {
+    return static_cast<steady_clock::rep>(mach_absolute_time());
+}
+static double compute_steady_factor() {
+    mach_timebase_info_data_t MachInfo;
+    mach_timebase_info(&MachInfo);
+    return static_cast<double>(MachInfo.numer) / MachInfo.denom;
+}
+
+static steady_clock::rep steady_full() {
+    static const double factor = compute_steady_factor();
+    return static_cast<steady_clock::rep>(mach_absolute_time() * factor);
+}
+
+typedef steady_clock::rep (*FP)();
+
+static FP init_steady_clock() {
+    mach_timebase_info_data_t MachInfo;
+    mach_timebase_info(&MachInfo);
+    if (MachInfo.numer == MachInfo.denom)
+        return &steady_simplified;
+    return &steady_full;
+}
+
+static steady_clock::time_point __libcpp_steady_clock_now() {
+    static FP fp = init_steady_clock();
+    return steady_clock::time_point(steady_clock::duration(fp()));
+}
+
+#else // vvvvv default behavior for Apple platforms  vvvvv
+
+// On Apple platforms, only CLOCK_UPTIME_RAW, CLOCK_MONOTONIC_RAW or
+// mach_absolute_time are able to time functions in the nanosecond range.
+// Furthermore, only CLOCK_MONOTONIC_RAW is truly monotonic, because it
+// also counts cycles when the system is asleep. Thus, it is the only
+// acceptable implementation of steady_clock.
+static steady_clock::time_point __libcpp_steady_clock_now() {
+    struct timespec tp;
+    if (0 != clock_gettime(CLOCK_MONOTONIC_RAW, &tp))
+        __throw_system_error(errno, "clock_gettime(CLOCK_MONOTONIC_RAW) failed");
+    return steady_clock::time_point(seconds(tp.tv_sec) + nanoseconds(tp.tv_nsec));
+}
+
+#endif
+
+#elif defined(_LIBCPP_WIN32API)
+
+// https://msdn.microsoft.com/en-us/library/windows/desktop/ms644905(v=vs.85).aspx says:
+//    If the function fails, the return value is zero. <snip>
+//    On systems that run Windows XP or later, the function will always succeed
+//      and will thus never return zero.
+
+static LARGE_INTEGER
+__QueryPerformanceFrequency()
+{
+    LARGE_INTEGER val;
+    (void) QueryPerformanceFrequency(&val);
+    return val;
+}
+
+static steady_clock::time_point __libcpp_steady_clock_now() {
+  static const LARGE_INTEGER freq = __QueryPerformanceFrequency();
+
+  LARGE_INTEGER counter;
+  (void) QueryPerformanceCounter(&counter);
+  auto seconds = counter.QuadPart / freq.QuadPart;
+  auto fractions = counter.QuadPart % freq.QuadPart;
+  auto dur = seconds * nano::den + fractions * nano::den / freq.QuadPart;
+  return steady_clock::time_point(steady_clock::duration(dur));
+}
+
+#elif defined(__MVS__)
+
+static steady_clock::time_point __libcpp_steady_clock_now() {
+  struct timespec64 ts;
+  if (0 != gettimeofdayMonotonic(&ts))
+    __throw_system_error(errno, "failed to obtain time of day");
+
+  return steady_clock::time_point(seconds(ts.tv_sec) + nanoseconds(ts.tv_nsec));
+}
+
+#  elif defined(__Fuchsia__)
+
+static steady_clock::time_point __libcpp_steady_clock_now() noexcept {
+  // Implicitly link against the vDSO system call ABI without
+  // requiring the final link to specify -lzircon explicitly when
+  // statically linking libc++.
+#    pragma comment(lib, "zircon")
+
+  return steady_clock::time_point(nanoseconds(_zx_clock_get_monotonic()));
+}
+
+#  elif defined(CLOCK_MONOTONIC)
+
+static steady_clock::time_point __libcpp_steady_clock_now() {
+    struct timespec tp;
+    if (0 != clock_gettime(CLOCK_MONOTONIC, &tp))
+        __throw_system_error(errno, "clock_gettime(CLOCK_MONOTONIC) failed");
+    return steady_clock::time_point(seconds(tp.tv_sec) + nanoseconds(tp.tv_nsec));
+}
+
+#  else
+#    error "Monotonic clock not implemented on this platform"
+#  endif
+
+const bool steady_clock::is_steady;
+
+steady_clock::time_point
+steady_clock::now() noexcept
+{
+    return __libcpp_steady_clock_now();
+}
+
+#endif // !_LIBCPP_HAS_NO_MONOTONIC_CLOCK
+
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/chrono_system_time_init.h b/app/src/main/cpp/libcxx/src/chrono_system_time_init.h
new file mode 100644
index 0000000..b1bdc69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/chrono_system_time_init.h
@@ -0,0 +1,2 @@
+#pragma GCC system_header
+GetSystemTimeInit GetSystemTimeAsFileTimeFunc _LIBCPP_INIT_PRIORITY_MAX;
diff --git a/app/src/main/cpp/libcxx/src/condition_variable.cpp b/app/src/main/cpp/libcxx/src/condition_variable.cpp
new file mode 100644
index 0000000..b17c4cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/condition_variable.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+#include <condition_variable>
+#include <thread>
+#include <system_error>
+
+#if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#  pragma comment(lib, "pthread")
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// ~condition_variable is defined elsewhere.
+
+void
+condition_variable::notify_one() noexcept
+{
+    __libcpp_condvar_signal(&__cv_);
+}
+
+void
+condition_variable::notify_all() noexcept
+{
+    __libcpp_condvar_broadcast(&__cv_);
+}
+
+void
+condition_variable::wait(unique_lock<mutex>& lk) noexcept
+{
+    if (!lk.owns_lock())
+        __throw_system_error(EPERM,
+                                  "condition_variable::wait: mutex not locked");
+    int ec = __libcpp_condvar_wait(&__cv_, lk.mutex()->native_handle());
+    if (ec)
+        __throw_system_error(ec, "condition_variable wait failed");
+}
+
+void
+condition_variable::__do_timed_wait(unique_lock<mutex>& lk,
+     chrono::time_point<chrono::system_clock, chrono::nanoseconds> tp) noexcept
+{
+    using namespace chrono;
+    if (!lk.owns_lock())
+        __throw_system_error(EPERM,
+                            "condition_variable::timed wait: mutex not locked");
+    nanoseconds d = tp.time_since_epoch();
+    if (d > nanoseconds(0x59682F000000E941))
+        d = nanoseconds(0x59682F000000E941);
+    __libcpp_timespec_t ts;
+    seconds s = duration_cast<seconds>(d);
+    typedef decltype(ts.tv_sec) ts_sec;
+    _LIBCPP_CONSTEXPR ts_sec ts_sec_max = numeric_limits<ts_sec>::max();
+    if (s.count() < ts_sec_max)
+    {
+        ts.tv_sec = static_cast<ts_sec>(s.count());
+        ts.tv_nsec = static_cast<decltype(ts.tv_nsec)>((d - s).count());
+    }
+    else
+    {
+        ts.tv_sec = ts_sec_max;
+        ts.tv_nsec = giga::num - 1;
+    }
+    int ec = __libcpp_condvar_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
+    if (ec != 0 && ec != ETIMEDOUT)
+        __throw_system_error(ec, "condition_variable timed_wait failed");
+}
+
+void
+notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk)
+{
+    auto& tl_ptr = __thread_local_data();
+    // If this thread was not created using std::thread then it will not have
+    // previously allocated.
+    if (tl_ptr.get() == nullptr) {
+        tl_ptr.set_pointer(new __thread_struct);
+    }
+    __thread_local_data()->notify_all_at_thread_exit(&cond, lk.release());
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
+
+#endif // !_LIBCPP_HAS_NO_THREADS
diff --git a/app/src/main/cpp/libcxx/src/condition_variable_destructor.cpp b/app/src/main/cpp/libcxx/src/condition_variable_destructor.cpp
new file mode 100644
index 0000000..c217a09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/condition_variable_destructor.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Define ~condition_variable.
+//
+// On some platforms ~condition_variable has been made trivial and the
+// definition is only provided for ABI compatibility.
+
+#include <__config>
+#include <__threading_support>
+
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+# if _LIBCPP_ABI_VERSION == 1 || !defined(_LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION)
+#   define NEEDS_CONDVAR_DESTRUCTOR
+# endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifdef NEEDS_CONDVAR_DESTRUCTOR
+
+class _LIBCPP_TYPE_VIS condition_variable
+{
+    __libcpp_condvar_t __cv_ = _LIBCPP_CONDVAR_INITIALIZER;
+public:
+    _LIBCPP_INLINE_VISIBILITY
+    constexpr condition_variable() noexcept = default;
+
+    ~condition_variable();
+
+    condition_variable(const condition_variable&) = delete;
+    condition_variable& operator=(const condition_variable&)  = delete;
+};
+
+condition_variable::~condition_variable()
+{
+    __libcpp_condvar_destroy(&__cv_);
+}
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/debug.cpp b/app/src/main/cpp/libcxx/src/debug.cpp
new file mode 100644
index 0000000..8f1d328
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/debug.cpp
@@ -0,0 +1,559 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <__config>
+#include <__debug>
+#include <__hash_table>
+#include <algorithm>
+#include <cstdio>
+#include <functional>
+#include <string>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+#  include <mutex>
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+_LIBCPP_FUNC_VIS
+__libcpp_db*
+__get_db()
+{
+    static _LIBCPP_NO_DESTROY __libcpp_db db;
+    return &db;
+}
+
+_LIBCPP_FUNC_VIS
+const __libcpp_db*
+__get_const_db()
+{
+    return __get_db();
+}
+
+namespace
+{
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+typedef mutex mutex_type;
+typedef lock_guard<mutex_type> WLock;
+typedef lock_guard<mutex_type> RLock;
+
+mutex_type&
+mut()
+{
+    static _LIBCPP_NO_DESTROY mutex_type m;
+    return m;
+}
+#endif // !_LIBCPP_HAS_NO_THREADS
+
+}  // unnamed namespace
+
+__i_node::~__i_node()
+{
+    if (__next_)
+    {
+        __next_->~__i_node();
+        free(__next_);
+    }
+}
+
+__c_node::~__c_node()
+{
+    free(beg_);
+    if (__next_)
+    {
+        __next_->~__c_node();
+        free(__next_);
+    }
+}
+
+__libcpp_db::__libcpp_db()
+    : __cbeg_(nullptr),
+      __cend_(nullptr),
+      __csz_(0),
+      __ibeg_(nullptr),
+      __iend_(nullptr),
+      __isz_(0)
+{
+}
+
+__libcpp_db::~__libcpp_db()
+{
+    if (__cbeg_)
+    {
+        for (__c_node** p = __cbeg_; p != __cend_; ++p)
+        {
+            if (*p != nullptr)
+            {
+                (*p)->~__c_node();
+                free(*p);
+            }
+        }
+        free(__cbeg_);
+    }
+    if (__ibeg_)
+    {
+        for (__i_node** p = __ibeg_; p != __iend_; ++p)
+        {
+            if (*p != nullptr)
+            {
+                (*p)->~__i_node();
+                free(*p);
+            }
+        }
+        free(__ibeg_);
+    }
+}
+
+void*
+__libcpp_db::__find_c_from_i(void* __i) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    RLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    _LIBCPP_ASSERT(i != nullptr, "iterator not found in debug database.");
+    return i->__c_ != nullptr ? i->__c_->__c_ : nullptr;
+}
+
+void
+__libcpp_db::__insert_ic(void* __i, const void* __c)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    if (__cbeg_ == __cend_)
+        return;
+    size_t hc = hash<const void*>()(__c) % static_cast<size_t>(__cend_ - __cbeg_);
+    __c_node* c = __cbeg_[hc];
+    if (c == nullptr)
+        return;
+    while (c->__c_ != __c)
+    {
+        c = c->__next_;
+        if (c == nullptr)
+            return;
+    }
+    __i_node* i = __insert_iterator(__i);
+    c->__add(i);
+    i->__c_ = c;
+}
+
+void
+__libcpp_db::__insert_c(void* __c, __libcpp_db::_InsertConstruct *__fn)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    if (__csz_ + 1 > static_cast<size_t>(__cend_ - __cbeg_))
+    {
+        size_t nc = __next_prime(2*static_cast<size_t>(__cend_ - __cbeg_) + 1);
+        __c_node** cbeg = static_cast<__c_node**>(calloc(nc, sizeof(__c_node*)));
+        if (cbeg == nullptr)
+            __throw_bad_alloc();
+
+        for (__c_node** p = __cbeg_; p != __cend_; ++p)
+        {
+            __c_node* q = *p;
+            while (q != nullptr)
+            {
+                size_t h = hash<void*>()(q->__c_) % nc;
+                __c_node* r = q->__next_;
+                q->__next_ = cbeg[h];
+                cbeg[h] = q;
+                q = r;
+            }
+        }
+        free(__cbeg_);
+        __cbeg_ = cbeg;
+        __cend_ = __cbeg_ + nc;
+    }
+    size_t hc = hash<void*>()(__c) % static_cast<size_t>(__cend_ - __cbeg_);
+    __c_node* p = __cbeg_[hc];
+    void *buf = malloc(sizeof(__c_node));
+    if (buf == nullptr)
+      __throw_bad_alloc();
+    __cbeg_[hc] = __fn(buf, __c, p);
+
+    ++__csz_;
+}
+
+void
+__libcpp_db::__erase_i(void* __i)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    if (__ibeg_ != __iend_)
+    {
+        size_t hi = hash<void*>()(__i) % static_cast<size_t>(__iend_ - __ibeg_);
+        __i_node* p = __ibeg_[hi];
+        if (p != nullptr)
+        {
+            __i_node* q = nullptr;
+            while (p->__i_ != __i)
+            {
+                q = p;
+                p = p->__next_;
+                if (p == nullptr)
+                    return;
+            }
+            if (q == nullptr)
+                __ibeg_[hi] = p->__next_;
+            else
+                q->__next_ = p->__next_;
+            __c_node* c = p->__c_;
+            --__isz_;
+            if (c != nullptr)
+                c->__remove(p);
+            free(p);
+        }
+    }
+}
+
+void
+__libcpp_db::__invalidate_all(void* __c)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    if (__cend_ != __cbeg_)
+    {
+        size_t hc = hash<void*>()(__c) % static_cast<size_t>(__cend_ - __cbeg_);
+        __c_node* p = __cbeg_[hc];
+        if (p == nullptr)
+            return;
+        while (p->__c_ != __c)
+        {
+            p = p->__next_;
+            if (p == nullptr)
+                return;
+        }
+        while (p->end_ != p->beg_)
+        {
+            --p->end_;
+            (*p->end_)->__c_ = nullptr;
+        }
+    }
+}
+
+__c_node*
+__libcpp_db::__find_c_and_lock(void* __c) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    mut().lock();
+#endif
+    if (__cend_ == __cbeg_)
+    {
+#ifndef _LIBCPP_HAS_NO_THREADS
+        mut().unlock();
+#endif
+        return nullptr;
+    }
+    size_t hc = hash<void*>()(__c) % static_cast<size_t>(__cend_ - __cbeg_);
+    __c_node* p = __cbeg_[hc];
+    if (p == nullptr)
+    {
+#ifndef _LIBCPP_HAS_NO_THREADS
+        mut().unlock();
+#endif
+        return nullptr;
+    }
+    while (p->__c_ != __c)
+    {
+        p = p->__next_;
+        if (p == nullptr)
+        {
+#ifndef _LIBCPP_HAS_NO_THREADS
+            mut().unlock();
+#endif
+            return nullptr;
+        }
+    }
+    return p;
+}
+
+__c_node*
+__libcpp_db::__find_c(void* __c) const
+{
+    size_t hc = hash<void*>()(__c) % static_cast<size_t>(__cend_ - __cbeg_);
+    __c_node* p = __cbeg_[hc];
+    _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __find_c A");
+    while (p->__c_ != __c)
+    {
+        p = p->__next_;
+        _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __find_c B");
+    }
+    return p;
+}
+
+void
+__libcpp_db::unlock() const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    mut().unlock();
+#endif
+}
+
+void
+__libcpp_db::__erase_c(void* __c)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    if (__cend_ != __cbeg_)
+    {
+        size_t hc = hash<void*>()(__c) % static_cast<size_t>(__cend_ - __cbeg_);
+        __c_node* p = __cbeg_[hc];
+        if (p == nullptr)
+            return;
+        __c_node* q = nullptr;
+        _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __erase_c A");
+        while (p->__c_ != __c)
+        {
+            q = p;
+            p = p->__next_;
+            if (p == nullptr)
+                return;
+            _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __erase_c B");
+        }
+        if (q == nullptr)
+            __cbeg_[hc] = p->__next_;
+        else
+            q->__next_ = p->__next_;
+        while (p->end_ != p->beg_)
+        {
+            --p->end_;
+            (*p->end_)->__c_ = nullptr;
+        }
+        free(p->beg_);
+        free(p);
+        --__csz_;
+    }
+}
+
+void
+__libcpp_db::__iterator_copy(void* __i, const void* __i0)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    __i_node* i0 = __find_iterator(__i0);
+    __c_node* c0 = i0 != nullptr ? i0->__c_ : nullptr;
+    if (i == nullptr && i0 != nullptr)
+        i = __insert_iterator(__i);
+    __c_node* c = i != nullptr ? i->__c_ : nullptr;
+    if (c != c0)
+    {
+        if (c != nullptr)
+            c->__remove(i);
+        if (i != nullptr)
+        {
+            i->__c_ = nullptr;
+            if (c0 != nullptr)
+            {
+                i->__c_ = c0;
+                i->__c_->__add(i);
+            }
+        }
+    }
+}
+
+bool
+__libcpp_db::__dereferenceable(const void* __i) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    RLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    return i != nullptr && i->__c_ != nullptr && i->__c_->__dereferenceable(__i);
+}
+
+bool
+__libcpp_db::__decrementable(const void* __i) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    RLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    return i != nullptr && i->__c_ != nullptr && i->__c_->__decrementable(__i);
+}
+
+bool
+__libcpp_db::__addable(const void* __i, ptrdiff_t __n) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    RLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    return i != nullptr && i->__c_ != nullptr && i->__c_->__addable(__i, __n);
+}
+
+bool
+__libcpp_db::__subscriptable(const void* __i, ptrdiff_t __n) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    RLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    return i != nullptr && i->__c_ != nullptr && i->__c_->__subscriptable(__i, __n);
+}
+
+bool
+__libcpp_db::__less_than_comparable(const void* __i, const void* __j) const
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    RLock _(mut());
+#endif
+    __i_node* i = __find_iterator(__i);
+    __i_node* j = __find_iterator(__j);
+    __c_node* ci = i != nullptr ? i->__c_ : nullptr;
+    __c_node* cj = j != nullptr ? j->__c_ : nullptr;
+    return ci == cj;
+}
+
+void
+__libcpp_db::swap(void* c1, void* c2)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    size_t hc = hash<void*>()(c1) % static_cast<size_t>(__cend_ - __cbeg_);
+    __c_node* p1 = __cbeg_[hc];
+    _LIBCPP_ASSERT(p1 != nullptr, "debug mode internal logic error swap A");
+    while (p1->__c_ != c1)
+    {
+        p1 = p1->__next_;
+        _LIBCPP_ASSERT(p1 != nullptr, "debug mode internal logic error swap B");
+    }
+    hc = hash<void*>()(c2) % static_cast<size_t>(__cend_ - __cbeg_);
+    __c_node* p2 = __cbeg_[hc];
+    _LIBCPP_ASSERT(p2 != nullptr, "debug mode internal logic error swap C");
+    while (p2->__c_ != c2)
+    {
+        p2 = p2->__next_;
+        _LIBCPP_ASSERT(p2 != nullptr, "debug mode internal logic error swap D");
+    }
+    std::swap(p1->beg_, p2->beg_);
+    std::swap(p1->end_, p2->end_);
+    std::swap(p1->cap_, p2->cap_);
+    for (__i_node** p = p1->beg_; p != p1->end_; ++p)
+        (*p)->__c_ = p1;
+    for (__i_node** p = p2->beg_; p != p2->end_; ++p)
+        (*p)->__c_ = p2;
+}
+
+void
+__libcpp_db::__insert_i(void* __i)
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    WLock _(mut());
+#endif
+    __insert_iterator(__i);
+}
+
+void
+__c_node::__add(__i_node* i)
+{
+    if (end_ == cap_)
+    {
+        size_t nc = 2*static_cast<size_t>(cap_ - beg_);
+        if (nc == 0)
+            nc = 1;
+        __i_node** beg =
+           static_cast<__i_node**>(malloc(nc * sizeof(__i_node*)));
+        if (beg == nullptr)
+            __throw_bad_alloc();
+
+        if (nc > 1)
+            memcpy(beg, beg_, nc/2*sizeof(__i_node*));
+        free(beg_);
+        beg_ = beg;
+        end_ = beg_ + nc/2;
+        cap_ = beg_ + nc;
+    }
+    *end_++ = i;
+}
+
+// private api
+
+_LIBCPP_HIDDEN
+__i_node*
+__libcpp_db::__insert_iterator(void* __i)
+{
+    if (__isz_ + 1 > static_cast<size_t>(__iend_ - __ibeg_))
+    {
+        size_t nc = __next_prime(2*static_cast<size_t>(__iend_ - __ibeg_) + 1);
+        __i_node** ibeg = static_cast<__i_node**>(calloc(nc, sizeof(__i_node*)));
+        if (ibeg == nullptr)
+            __throw_bad_alloc();
+
+        for (__i_node** p = __ibeg_; p != __iend_; ++p)
+        {
+            __i_node* q = *p;
+            while (q != nullptr)
+            {
+                size_t h = hash<void*>()(q->__i_) % nc;
+                __i_node* r = q->__next_;
+                q->__next_ = ibeg[h];
+                ibeg[h] = q;
+                q = r;
+            }
+        }
+        free(__ibeg_);
+        __ibeg_ = ibeg;
+        __iend_ = __ibeg_ + nc;
+    }
+    size_t hi = hash<void*>()(__i) % static_cast<size_t>(__iend_ - __ibeg_);
+    __i_node* p = __ibeg_[hi];
+    __i_node* r = __ibeg_[hi] =
+      static_cast<__i_node*>(malloc(sizeof(__i_node)));
+    if (r == nullptr)
+        __throw_bad_alloc();
+
+    ::new(r) __i_node(__i, p, nullptr);
+    ++__isz_;
+    return r;
+}
+
+_LIBCPP_HIDDEN
+__i_node*
+__libcpp_db::__find_iterator(const void* __i) const
+{
+    __i_node* r = nullptr;
+    if (__ibeg_ != __iend_)
+    {
+        size_t h = hash<const void*>()(__i) % static_cast<size_t>(__iend_ - __ibeg_);
+        for (__i_node* nd = __ibeg_[h]; nd != nullptr; nd = nd->__next_)
+        {
+            if (nd->__i_ == __i)
+            {
+                r = nd;
+                break;
+            }
+        }
+    }
+    return r;
+}
+
+_LIBCPP_HIDDEN
+void
+__c_node::__remove(__i_node* p)
+{
+    __i_node** r = find(beg_, end_, p);
+    _LIBCPP_ASSERT(r != end_, "debug mode internal logic error __c_node::__remove");
+    if (--end_ != r)
+        memmove(r, r+1, static_cast<size_t>(end_ - r)*sizeof(__i_node*));
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/exception.cpp b/app/src/main/cpp/libcxx/src/exception.cpp
new file mode 100644
index 0000000..e5d6b9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/exception.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <exception>
+#include <new>
+#include <typeinfo>
+
+#if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI)
+  #include <cxxabi.h>
+  using namespace __cxxabiv1;
+  #define HAVE_DEPENDENT_EH_ABI 1
+#endif
+
+#if defined(_LIBCPP_ABI_MICROSOFT)
+#include "support/runtime/exception_msvc.ipp"
+#include "support/runtime/exception_pointer_msvc.ipp"
+#elif defined(_LIBCPPABI_VERSION)
+#include "support/runtime/exception_libcxxabi.ipp"
+#include "support/runtime/exception_pointer_cxxabi.ipp"
+#elif defined(LIBCXXRT)
+#include "support/runtime/exception_libcxxrt.ipp"
+#include "support/runtime/exception_pointer_cxxabi.ipp"
+#elif defined(__GLIBCXX__)
+#include "support/runtime/exception_glibcxx.ipp"
+#include "support/runtime/exception_pointer_glibcxx.ipp"
+#else
+#include "include/atomic_support.h"
+#include "support/runtime/exception_fallback.ipp"
+#include "support/runtime/exception_pointer_unimplemented.ipp"
+#endif
diff --git a/app/src/main/cpp/libcxx/src/experimental/memory_resource.cpp b/app/src/main/cpp/libcxx/src/experimental/memory_resource.cpp
new file mode 100644
index 0000000..d6bb52e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/experimental/memory_resource.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <experimental/memory_resource>
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+
+#ifndef _LIBCPP_HAS_NO_ATOMIC_HEADER
+#  include <atomic>
+#elif !defined(_LIBCPP_HAS_NO_THREADS)
+#  include <mutex>
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
+
+// memory_resource
+
+//memory_resource::~memory_resource() {}
+
+// new_delete_resource()
+
+class _LIBCPP_TYPE_VIS __new_delete_memory_resource_imp
+    : public memory_resource
+{
+    void *do_allocate(size_t size, size_t align) override {
+#ifdef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
+        if (__is_overaligned_for_new(align))
+            __throw_bad_alloc();
+#endif
+        return _VSTD::__libcpp_allocate(size, align);
+    }
+
+    void do_deallocate(void *p, size_t n, size_t align) override {
+      _VSTD::__libcpp_deallocate(p, n, align);
+    }
+
+    bool do_is_equal(memory_resource const & other) const noexcept override
+        { return &other == this; }
+
+public:
+    ~__new_delete_memory_resource_imp() override = default;
+};
+
+// null_memory_resource()
+
+class _LIBCPP_TYPE_VIS __null_memory_resource_imp
+    : public memory_resource
+{
+public:
+    ~__null_memory_resource_imp() = default;
+
+protected:
+    virtual void* do_allocate(size_t, size_t) {
+        __throw_bad_alloc();
+    }
+    virtual void do_deallocate(void *, size_t, size_t) {}
+    virtual bool do_is_equal(memory_resource const & __other) const noexcept
+    { return &__other == this; }
+};
+
+namespace {
+
+union ResourceInitHelper {
+  struct {
+    __new_delete_memory_resource_imp new_delete_res;
+    __null_memory_resource_imp       null_res;
+  } resources;
+  char dummy;
+  _LIBCPP_CONSTEXPR_SINCE_CXX14 ResourceInitHelper() : resources() {}
+  ~ResourceInitHelper() {}
+};
+
+// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority
+// attribute with a value that's reserved for the implementation (we're the implementation).
+#include "memory_resource_init_helper.h"
+
+} // end namespace
+
+
+memory_resource * new_delete_resource() noexcept {
+    return &res_init.resources.new_delete_res;
+}
+
+memory_resource * null_memory_resource() noexcept {
+    return &res_init.resources.null_res;
+}
+
+// default_memory_resource()
+
+static memory_resource *
+__default_memory_resource(bool set = false, memory_resource * new_res = nullptr) noexcept
+{
+#ifndef _LIBCPP_HAS_NO_ATOMIC_HEADER
+    static constinit atomic<memory_resource*> __res{&res_init.resources.new_delete_res};
+    if (set) {
+        new_res = new_res ? new_res : new_delete_resource();
+        // TODO: Can a weaker ordering be used?
+        return _VSTD::atomic_exchange_explicit(
+            &__res, new_res, memory_order_acq_rel);
+    }
+    else {
+        return _VSTD::atomic_load_explicit(
+            &__res, memory_order_acquire);
+    }
+#elif !defined(_LIBCPP_HAS_NO_THREADS)
+    static constinit memory_resource *res = &res_init.resources.new_delete_res;
+    static mutex res_lock;
+    if (set) {
+        new_res = new_res ? new_res : new_delete_resource();
+        lock_guard<mutex> guard(res_lock);
+        memory_resource * old_res = res;
+        res = new_res;
+        return old_res;
+    } else {
+        lock_guard<mutex> guard(res_lock);
+        return res;
+    }
+#else
+    static constinit memory_resource *res = &res_init.resources.new_delete_res;
+    if (set) {
+        new_res = new_res ? new_res : new_delete_resource();
+        memory_resource * old_res = res;
+        res = new_res;
+        return old_res;
+    } else {
+        return res;
+    }
+#endif
+}
+
+memory_resource * get_default_resource() noexcept
+{
+    return __default_memory_resource();
+}
+
+memory_resource * set_default_resource(memory_resource * __new_res) noexcept
+{
+    return __default_memory_resource(true, __new_res);
+}
+
+_LIBCPP_END_NAMESPACE_LFTS_PMR
diff --git a/app/src/main/cpp/libcxx/src/experimental/memory_resource_init_helper.h b/app/src/main/cpp/libcxx/src/experimental/memory_resource_init_helper.h
new file mode 100644
index 0000000..032edc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/experimental/memory_resource_init_helper.h
@@ -0,0 +1,2 @@
+#pragma GCC system_header
+static constinit ResourceInitHelper res_init _LIBCPP_INIT_PRIORITY_MAX;
diff --git a/app/src/main/cpp/libcxx/src/filesystem/directory_iterator.cpp b/app/src/main/cpp/libcxx/src/filesystem/directory_iterator.cpp
new file mode 100644
index 0000000..8d069cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/filesystem/directory_iterator.cpp
@@ -0,0 +1,332 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <__config>
+#include <errno.h>
+#include <filesystem>
+#include <stack>
+
+#include "filesystem_common.h"
+
+_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
+
+using detail::ErrorHandler;
+
+#if defined(_LIBCPP_WIN32API)
+class __dir_stream {
+public:
+  __dir_stream() = delete;
+  __dir_stream& operator=(const __dir_stream&) = delete;
+
+  __dir_stream(__dir_stream&& __ds) noexcept : __stream_(__ds.__stream_),
+                                               __root_(std::move(__ds.__root_)),
+                                               __entry_(std::move(__ds.__entry_)) {
+    __ds.__stream_ = INVALID_HANDLE_VALUE;
+  }
+
+  __dir_stream(const path& root, directory_options opts, error_code& ec)
+      : __stream_(INVALID_HANDLE_VALUE), __root_(root) {
+    if (root.native().empty()) {
+      ec = make_error_code(errc::no_such_file_or_directory);
+      return;
+    }
+    __stream_ = ::FindFirstFileW((root / "*").c_str(), &__data_);
+    if (__stream_ == INVALID_HANDLE_VALUE) {
+      ec = detail::make_windows_error(GetLastError());
+      const bool ignore_permission_denied =
+          bool(opts & directory_options::skip_permission_denied);
+      if (ignore_permission_denied &&
+          ec.value() == static_cast<int>(errc::permission_denied))
+        ec.clear();
+      return;
+    }
+    if (!assign())
+      advance(ec);
+  }
+
+  ~__dir_stream() noexcept {
+    if (__stream_ == INVALID_HANDLE_VALUE)
+      return;
+    close();
+  }
+
+  bool good() const noexcept { return __stream_ != INVALID_HANDLE_VALUE; }
+
+  bool advance(error_code& ec) {
+    while (::FindNextFileW(__stream_, &__data_)) {
+      if (assign())
+        return true;
+    }
+    close();
+    return false;
+  }
+
+  bool assign() {
+    if (!wcscmp(__data_.cFileName, L".") || !wcscmp(__data_.cFileName, L".."))
+      return false;
+    // FIXME: Cache more of this
+    //directory_entry::__cached_data cdata;
+    //cdata.__type_ = get_file_type(__data_);
+    //cdata.__size_ = get_file_size(__data_);
+    //cdata.__write_time_ = get_write_time(__data_);
+    __entry_.__assign_iter_entry(
+        __root_ / __data_.cFileName,
+        directory_entry::__create_iter_result(detail::get_file_type(__data_)));
+    return true;
+  }
+
+private:
+  error_code close() noexcept {
+    error_code ec;
+    if (!::FindClose(__stream_))
+      ec = detail::make_windows_error(GetLastError());
+    __stream_ = INVALID_HANDLE_VALUE;
+    return ec;
+  }
+
+  HANDLE __stream_{INVALID_HANDLE_VALUE};
+  WIN32_FIND_DATAW __data_;
+
+public:
+  path __root_;
+  directory_entry __entry_;
+};
+#else
+class __dir_stream {
+public:
+  __dir_stream() = delete;
+  __dir_stream& operator=(const __dir_stream&) = delete;
+
+  __dir_stream(__dir_stream&& other) noexcept : __stream_(other.__stream_),
+                                                __root_(std::move(other.__root_)),
+                                                __entry_(std::move(other.__entry_)) {
+    other.__stream_ = nullptr;
+  }
+
+  __dir_stream(const path& root, directory_options opts, error_code& ec)
+      : __stream_(nullptr), __root_(root) {
+    if ((__stream_ = ::opendir(root.c_str())) == nullptr) {
+      ec = detail::capture_errno();
+      const bool allow_eacces =
+          bool(opts & directory_options::skip_permission_denied);
+      if (allow_eacces && ec.value() == EACCES)
+        ec.clear();
+      return;
+    }
+    advance(ec);
+  }
+
+  ~__dir_stream() noexcept {
+    if (__stream_)
+      close();
+  }
+
+  bool good() const noexcept { return __stream_ != nullptr; }
+
+  bool advance(error_code& ec) {
+    while (true) {
+      auto str_type_pair = detail::posix_readdir(__stream_, ec);
+      auto& str = str_type_pair.first;
+      if (str == "." || str == "..") {
+        continue;
+      } else if (ec || str.empty()) {
+        close();
+        return false;
+      } else {
+        __entry_.__assign_iter_entry(
+            __root_ / str,
+            directory_entry::__create_iter_result(str_type_pair.second));
+        return true;
+      }
+    }
+  }
+
+private:
+  error_code close() noexcept {
+    error_code m_ec;
+    if (::closedir(__stream_) == -1)
+      m_ec = detail::capture_errno();
+    __stream_ = nullptr;
+    return m_ec;
+  }
+
+  DIR* __stream_{nullptr};
+
+public:
+  path __root_;
+  directory_entry __entry_;
+};
+#endif
+
+// directory_iterator
+
+directory_iterator::directory_iterator(const path& p, error_code* ec,
+                                       directory_options opts) {
+  ErrorHandler<void> err("directory_iterator::directory_iterator(...)", ec, &p);
+
+  error_code m_ec;
+  __imp_ = make_shared<__dir_stream>(p, opts, m_ec);
+  if (ec)
+    *ec = m_ec;
+  if (!__imp_->good()) {
+    __imp_.reset();
+    if (m_ec)
+      err.report(m_ec);
+  }
+}
+
+directory_iterator& directory_iterator::__increment(error_code* ec) {
+  _LIBCPP_ASSERT(__imp_, "Attempting to increment an invalid iterator");
+  ErrorHandler<void> err("directory_iterator::operator++()", ec);
+
+  error_code m_ec;
+  if (!__imp_->advance(m_ec)) {
+    path root = std::move(__imp_->__root_);
+    __imp_.reset();
+    if (m_ec)
+      err.report(m_ec, "at root " PATH_CSTR_FMT, root.c_str());
+  }
+  return *this;
+}
+
+directory_entry const& directory_iterator::__dereference() const {
+  _LIBCPP_ASSERT(__imp_, "Attempting to dereference an invalid iterator");
+  return __imp_->__entry_;
+}
+
+// recursive_directory_iterator
+
+struct recursive_directory_iterator::__shared_imp {
+  stack<__dir_stream> __stack_;
+  directory_options __options_;
+};
+
+recursive_directory_iterator::recursive_directory_iterator(
+    const path& p, directory_options opt, error_code* ec)
+    : __imp_(nullptr), __rec_(true) {
+  ErrorHandler<void> err("recursive_directory_iterator", ec, &p);
+
+  error_code m_ec;
+  __dir_stream new_s(p, opt, m_ec);
+  if (m_ec)
+    err.report(m_ec);
+  if (m_ec || !new_s.good())
+    return;
+
+  __imp_ = make_shared<__shared_imp>();
+  __imp_->__options_ = opt;
+  __imp_->__stack_.push(std::move(new_s));
+}
+
+void recursive_directory_iterator::__pop(error_code* ec) {
+  _LIBCPP_ASSERT(__imp_, "Popping the end iterator");
+  if (ec)
+    ec->clear();
+  __imp_->__stack_.pop();
+  if (__imp_->__stack_.size() == 0)
+    __imp_.reset();
+  else
+    __advance(ec);
+}
+
+directory_options recursive_directory_iterator::options() const {
+  return __imp_->__options_;
+}
+
+int recursive_directory_iterator::depth() const {
+  return __imp_->__stack_.size() - 1;
+}
+
+const directory_entry& recursive_directory_iterator::__dereference() const {
+  return __imp_->__stack_.top().__entry_;
+}
+
+recursive_directory_iterator&
+recursive_directory_iterator::__increment(error_code* ec) {
+  if (ec)
+    ec->clear();
+  if (recursion_pending()) {
+    if (__try_recursion(ec) || (ec && *ec))
+      return *this;
+  }
+  __rec_ = true;
+  __advance(ec);
+  return *this;
+}
+
+void recursive_directory_iterator::__advance(error_code* ec) {
+  ErrorHandler<void> err("recursive_directory_iterator::operator++()", ec);
+
+  const directory_iterator end_it;
+  auto& stack = __imp_->__stack_;
+  error_code m_ec;
+  while (stack.size() > 0) {
+    if (stack.top().advance(m_ec))
+      return;
+    if (m_ec)
+      break;
+    stack.pop();
+  }
+
+  if (m_ec) {
+    path root = std::move(stack.top().__root_);
+    __imp_.reset();
+    err.report(m_ec, "at root " PATH_CSTR_FMT, root.c_str());
+  } else {
+    __imp_.reset();
+  }
+}
+
+bool recursive_directory_iterator::__try_recursion(error_code* ec) {
+  ErrorHandler<void> err("recursive_directory_iterator::operator++()", ec);
+
+  bool rec_sym = bool(options() & directory_options::follow_directory_symlink);
+
+  auto& curr_it = __imp_->__stack_.top();
+
+  bool skip_rec = false;
+  error_code m_ec;
+  if (!rec_sym) {
+    file_status st(curr_it.__entry_.__get_sym_ft(&m_ec));
+    if (m_ec && status_known(st))
+      m_ec.clear();
+    if (m_ec || is_symlink(st) || !is_directory(st))
+      skip_rec = true;
+  } else {
+    file_status st(curr_it.__entry_.__get_ft(&m_ec));
+    if (m_ec && status_known(st))
+      m_ec.clear();
+    if (m_ec || !is_directory(st))
+      skip_rec = true;
+  }
+
+  if (!skip_rec) {
+    __dir_stream new_it(curr_it.__entry_.path(), __imp_->__options_, m_ec);
+    if (new_it.good()) {
+      __imp_->__stack_.push(std::move(new_it));
+      return true;
+    }
+  }
+  if (m_ec) {
+    const bool allow_eacess =
+        bool(__imp_->__options_ & directory_options::skip_permission_denied);
+    if (m_ec.value() == EACCES && allow_eacess) {
+      if (ec)
+        ec->clear();
+    } else {
+      path at_ent = std::move(curr_it.__entry_.__p_);
+      __imp_.reset();
+      err.report(m_ec, "attempting recursion into " PATH_CSTR_FMT,
+                 at_ent.c_str());
+    }
+  }
+  return false;
+}
+
+_LIBCPP_END_NAMESPACE_FILESYSTEM
diff --git a/app/src/main/cpp/libcxx/src/filesystem/filesystem_common.h b/app/src/main/cpp/libcxx/src/filesystem/filesystem_common.h
new file mode 100644
index 0000000..0e71569
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/filesystem/filesystem_common.h
@@ -0,0 +1,613 @@
+//===----------------------------------------------------------------------===////
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===////
+
+#ifndef FILESYSTEM_COMMON_H
+#define FILESYSTEM_COMMON_H
+
+#include <__assert>
+#include <__config>
+#include <array>
+#include <chrono>
+#include <climits>
+#include <cstdarg>
+#include <ctime>
+#include <filesystem>
+#include <ratio>
+#include <system_error>
+#include <utility>
+
+#if defined(_LIBCPP_WIN32API)
+# define WIN32_LEAN_AND_MEAN
+# define NOMINMAX
+# include <windows.h>
+#else
+# include <dirent.h>   // for DIR & friends
+# include <fcntl.h>    /* values for fchmodat */
+# include <sys/stat.h>
+# include <sys/statvfs.h>
+# include <sys/time.h> // for ::utimes as used in __last_write_time
+# include <unistd.h>
+#endif // defined(_LIBCPP_WIN32API)
+
+#include "../include/apple_availability.h"
+
+#if !defined(__APPLE__)
+// We can use the presence of UTIME_OMIT to detect platforms that provide
+// utimensat.
+#if defined(UTIME_OMIT)
+#define _LIBCPP_USE_UTIMENSAT
+#endif
+#endif
+
+_LIBCPP_DIAGNOSTIC_PUSH
+_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wunused-function")
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wunused-function")
+
+#if defined(_LIBCPP_WIN32API)
+#  define PATHSTR(x) (L##x)
+#  define PATH_CSTR_FMT "\"%ls\""
+#else
+#  define PATHSTR(x) (x)
+#  define PATH_CSTR_FMT "\"%s\""
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
+
+namespace detail {
+
+#if defined(_LIBCPP_WIN32API)
+// Non anonymous, to allow access from two translation units.
+errc __win_err_to_errc(int err);
+#endif
+
+namespace {
+
+static _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 1, 0) string
+format_string_impl(const char* msg, va_list ap) {
+  array<char, 256> buf;
+
+  va_list apcopy;
+  va_copy(apcopy, ap);
+  int ret = ::vsnprintf(buf.data(), buf.size(), msg, apcopy);
+  va_end(apcopy);
+
+  string result;
+  if (static_cast<size_t>(ret) < buf.size()) {
+    result.assign(buf.data(), static_cast<size_t>(ret));
+  } else {
+    // we did not provide a long enough buffer on our first attempt. The
+    // return value is the number of bytes (excluding the null byte) that are
+    // needed for formatting.
+    size_t size_with_null = static_cast<size_t>(ret) + 1;
+    result.__resize_default_init(size_with_null - 1);
+    ret = ::vsnprintf(&result[0], size_with_null, msg, ap);
+    _LIBCPP_ASSERT(static_cast<size_t>(ret) == (size_with_null - 1), "TODO");
+  }
+  return result;
+}
+
+static _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 1, 2) string
+format_string(const char* msg, ...) {
+  string ret;
+  va_list ap;
+  va_start(ap, msg);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+  try {
+#endif // _LIBCPP_NO_EXCEPTIONS
+    ret = format_string_impl(msg, ap);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+  } catch (...) {
+    va_end(ap);
+    throw;
+  }
+#endif // _LIBCPP_NO_EXCEPTIONS
+  va_end(ap);
+  return ret;
+}
+
+error_code capture_errno() {
+  _LIBCPP_ASSERT(errno != 0, "Expected errno to be non-zero");
+  return error_code(errno, generic_category());
+}
+
+#if defined(_LIBCPP_WIN32API)
+error_code make_windows_error(int err) {
+  return make_error_code(__win_err_to_errc(err));
+}
+#endif
+
+template <class T>
+T error_value();
+template <>
+_LIBCPP_CONSTEXPR_SINCE_CXX14 void error_value<void>() {}
+template <>
+bool error_value<bool>() {
+  return false;
+}
+#if __SIZEOF_SIZE_T__ != __SIZEOF_LONG_LONG__
+template <>
+size_t error_value<size_t>() {
+  return size_t(-1);
+}
+#endif
+template <>
+uintmax_t error_value<uintmax_t>() {
+  return uintmax_t(-1);
+}
+template <>
+_LIBCPP_CONSTEXPR_SINCE_CXX14 file_time_type error_value<file_time_type>() {
+  return file_time_type::min();
+}
+template <>
+path error_value<path>() {
+  return {};
+}
+
+template <class T>
+struct ErrorHandler {
+  const char* func_name_;
+  error_code* ec_ = nullptr;
+  const path* p1_ = nullptr;
+  const path* p2_ = nullptr;
+
+  ErrorHandler(const char* fname, error_code* ec, const path* p1 = nullptr,
+               const path* p2 = nullptr)
+      : func_name_(fname), ec_(ec), p1_(p1), p2_(p2) {
+    if (ec_)
+      ec_->clear();
+  }
+
+  T report(const error_code& ec) const {
+    if (ec_) {
+      *ec_ = ec;
+      return error_value<T>();
+    }
+    string what = string("in ") + func_name_;
+    switch (bool(p1_) + bool(p2_)) {
+    case 0:
+      __throw_filesystem_error(what, ec);
+    case 1:
+      __throw_filesystem_error(what, *p1_, ec);
+    case 2:
+      __throw_filesystem_error(what, *p1_, *p2_, ec);
+    }
+    __libcpp_unreachable();
+  }
+
+  _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 3, 0)
+  void report_impl(const error_code& ec, const char* msg, va_list ap) const {
+    if (ec_) {
+      *ec_ = ec;
+      return;
+    }
+    string what =
+        string("in ") + func_name_ + ": " + format_string_impl(msg, ap);
+    switch (bool(p1_) + bool(p2_)) {
+    case 0:
+      __throw_filesystem_error(what, ec);
+    case 1:
+      __throw_filesystem_error(what, *p1_, ec);
+    case 2:
+      __throw_filesystem_error(what, *p1_, *p2_, ec);
+    }
+    __libcpp_unreachable();
+  }
+
+  _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 3, 4)
+  T report(const error_code& ec, const char* msg, ...) const {
+    va_list ap;
+    va_start(ap, msg);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try {
+#endif // _LIBCPP_NO_EXCEPTIONS
+      report_impl(ec, msg, ap);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    } catch (...) {
+      va_end(ap);
+      throw;
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    va_end(ap);
+    return error_value<T>();
+  }
+
+  T report(errc const& err) const {
+    return report(make_error_code(err));
+  }
+
+  _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 3, 4)
+  T report(errc const& err, const char* msg, ...) const {
+    va_list ap;
+    va_start(ap, msg);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try {
+#endif // _LIBCPP_NO_EXCEPTIONS
+      report_impl(make_error_code(err), msg, ap);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    } catch (...) {
+      va_end(ap);
+      throw;
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    va_end(ap);
+    return error_value<T>();
+  }
+
+private:
+  ErrorHandler(ErrorHandler const&) = delete;
+  ErrorHandler& operator=(ErrorHandler const&) = delete;
+};
+
+using chrono::duration;
+using chrono::duration_cast;
+
+#if defined(_LIBCPP_WIN32API)
+// Various C runtime versions (UCRT, or the legacy msvcrt.dll used by
+// some mingw toolchains) provide different stat function implementations,
+// with a number of limitations with respect to what we want from the
+// stat function. Instead provide our own (in the anonymous detail namespace
+// in posix_compat.h) which does exactly what we want, along with our own
+// stat structure and flag macros.
+
+struct TimeSpec {
+  int64_t tv_sec;
+  int64_t tv_nsec;
+};
+struct StatT {
+  unsigned st_mode;
+  TimeSpec st_atim;
+  TimeSpec st_mtim;
+  uint64_t st_dev; // FILE_ID_INFO::VolumeSerialNumber
+  struct FileIdStruct {
+    unsigned char id[16]; // FILE_ID_INFO::FileId
+    bool operator==(const FileIdStruct &other) const {
+      for (int i = 0; i < 16; i++)
+        if (id[i] != other.id[i])
+          return false;
+      return true;
+    }
+  } st_ino;
+  uint32_t st_nlink;
+  uintmax_t st_size;
+};
+
+#else
+using TimeSpec = struct timespec;
+using TimeVal = struct timeval;
+using StatT = struct stat;
+#endif
+
+template <class FileTimeT, class TimeT,
+          bool IsFloat = is_floating_point<typename FileTimeT::rep>::value>
+struct time_util_base {
+  using rep = typename FileTimeT::rep;
+  using fs_duration = typename FileTimeT::duration;
+  using fs_seconds = duration<rep>;
+  using fs_nanoseconds = duration<rep, nano>;
+  using fs_microseconds = duration<rep, micro>;
+
+  static constexpr rep max_seconds =
+      duration_cast<fs_seconds>(FileTimeT::duration::max()).count();
+
+  static constexpr rep max_nsec =
+      duration_cast<fs_nanoseconds>(FileTimeT::duration::max() -
+                                    fs_seconds(max_seconds))
+          .count();
+
+  static constexpr rep min_seconds =
+      duration_cast<fs_seconds>(FileTimeT::duration::min()).count();
+
+  static constexpr rep min_nsec_timespec =
+      duration_cast<fs_nanoseconds>(
+          (FileTimeT::duration::min() - fs_seconds(min_seconds)) +
+          fs_seconds(1))
+          .count();
+
+private:
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 fs_duration get_min_nsecs() {
+    return duration_cast<fs_duration>(
+        fs_nanoseconds(min_nsec_timespec) -
+        duration_cast<fs_nanoseconds>(fs_seconds(1)));
+  }
+  // Static assert that these values properly round trip.
+  static_assert(fs_seconds(min_seconds) + get_min_nsecs() ==
+                    FileTimeT::duration::min(),
+                "value doesn't roundtrip");
+
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 bool check_range() {
+    // This kinda sucks, but it's what happens when we don't have __int128_t.
+    if (sizeof(TimeT) == sizeof(rep)) {
+      typedef duration<long long, ratio<3600 * 24 * 365> > Years;
+      return duration_cast<Years>(fs_seconds(max_seconds)) > Years(250) &&
+             duration_cast<Years>(fs_seconds(min_seconds)) < Years(-250);
+    }
+    return max_seconds >= numeric_limits<TimeT>::max() &&
+           min_seconds <= numeric_limits<TimeT>::min();
+  }
+  static_assert(check_range(), "the representable range is unacceptable small");
+};
+
+template <class FileTimeT, class TimeT>
+struct time_util_base<FileTimeT, TimeT, true> {
+  using rep = typename FileTimeT::rep;
+  using fs_duration = typename FileTimeT::duration;
+  using fs_seconds = duration<rep>;
+  using fs_nanoseconds = duration<rep, nano>;
+  using fs_microseconds = duration<rep, micro>;
+
+  static const rep max_seconds;
+  static const rep max_nsec;
+  static const rep min_seconds;
+  static const rep min_nsec_timespec;
+};
+
+template <class FileTimeT, class TimeT>
+const typename FileTimeT::rep
+    time_util_base<FileTimeT, TimeT, true>::max_seconds =
+        duration_cast<fs_seconds>(FileTimeT::duration::max()).count();
+
+template <class FileTimeT, class TimeT>
+const typename FileTimeT::rep time_util_base<FileTimeT, TimeT, true>::max_nsec =
+    duration_cast<fs_nanoseconds>(FileTimeT::duration::max() -
+                                  fs_seconds(max_seconds))
+        .count();
+
+template <class FileTimeT, class TimeT>
+const typename FileTimeT::rep
+    time_util_base<FileTimeT, TimeT, true>::min_seconds =
+        duration_cast<fs_seconds>(FileTimeT::duration::min()).count();
+
+template <class FileTimeT, class TimeT>
+const typename FileTimeT::rep
+    time_util_base<FileTimeT, TimeT, true>::min_nsec_timespec =
+        duration_cast<fs_nanoseconds>((FileTimeT::duration::min() -
+                                       fs_seconds(min_seconds)) +
+                                      fs_seconds(1))
+            .count();
+
+template <class FileTimeT, class TimeT, class TimeSpecT>
+struct time_util : time_util_base<FileTimeT, TimeT> {
+  using Base = time_util_base<FileTimeT, TimeT>;
+  using Base::max_nsec;
+  using Base::max_seconds;
+  using Base::min_nsec_timespec;
+  using Base::min_seconds;
+
+  using typename Base::fs_duration;
+  using typename Base::fs_microseconds;
+  using typename Base::fs_nanoseconds;
+  using typename Base::fs_seconds;
+
+public:
+  template <class CType, class ChronoType>
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 bool checked_set(CType* out,
+                                                        ChronoType time) {
+    using Lim = numeric_limits<CType>;
+    if (time > Lim::max() || time < Lim::min())
+      return false;
+    *out = static_cast<CType>(time);
+    return true;
+  }
+
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 bool is_representable(TimeSpecT tm) {
+    if (tm.tv_sec >= 0) {
+      return tm.tv_sec < max_seconds ||
+             (tm.tv_sec == max_seconds && tm.tv_nsec <= max_nsec);
+    } else if (tm.tv_sec == (min_seconds - 1)) {
+      return tm.tv_nsec >= min_nsec_timespec;
+    } else {
+      return tm.tv_sec >= min_seconds;
+    }
+  }
+
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 bool is_representable(FileTimeT tm) {
+    auto secs = duration_cast<fs_seconds>(tm.time_since_epoch());
+    auto nsecs = duration_cast<fs_nanoseconds>(tm.time_since_epoch() - secs);
+    if (nsecs.count() < 0) {
+      secs = secs + fs_seconds(1);
+      nsecs = nsecs + fs_seconds(1);
+    }
+    using TLim = numeric_limits<TimeT>;
+    if (secs.count() >= 0)
+      return secs.count() <= TLim::max();
+    return secs.count() >= TLim::min();
+  }
+
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 FileTimeT
+  convert_from_timespec(TimeSpecT tm) {
+    if (tm.tv_sec >= 0 || tm.tv_nsec == 0) {
+      return FileTimeT(fs_seconds(tm.tv_sec) +
+                       duration_cast<fs_duration>(fs_nanoseconds(tm.tv_nsec)));
+    } else { // tm.tv_sec < 0
+      auto adj_subsec = duration_cast<fs_duration>(fs_seconds(1) -
+                                                   fs_nanoseconds(tm.tv_nsec));
+      auto Dur = fs_seconds(tm.tv_sec + 1) - adj_subsec;
+      return FileTimeT(Dur);
+    }
+  }
+
+  template <class SubSecT>
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 bool
+  set_times_checked(TimeT* sec_out, SubSecT* subsec_out, FileTimeT tp) {
+    auto dur = tp.time_since_epoch();
+    auto sec_dur = duration_cast<fs_seconds>(dur);
+    auto subsec_dur = duration_cast<fs_nanoseconds>(dur - sec_dur);
+    // The tv_nsec and tv_usec fields must not be negative so adjust accordingly
+    if (subsec_dur.count() < 0) {
+      if (sec_dur.count() > min_seconds) {
+        sec_dur = sec_dur - fs_seconds(1);
+        subsec_dur = subsec_dur + fs_seconds(1);
+      } else {
+        subsec_dur = fs_nanoseconds::zero();
+      }
+    }
+    return checked_set(sec_out, sec_dur.count()) &&
+           checked_set(subsec_out, subsec_dur.count());
+  }
+  static _LIBCPP_CONSTEXPR_SINCE_CXX14 bool convert_to_timespec(TimeSpecT& dest,
+                                                                FileTimeT tp) {
+    if (!is_representable(tp))
+      return false;
+    return set_times_checked(&dest.tv_sec, &dest.tv_nsec, tp);
+  }
+};
+
+#if defined(_LIBCPP_WIN32API)
+using fs_time = time_util<file_time_type, int64_t, TimeSpec>;
+#else
+using fs_time = time_util<file_time_type, time_t, TimeSpec>;
+#endif
+
+#if defined(__APPLE__)
+inline TimeSpec extract_mtime(StatT const& st) { return st.st_mtimespec; }
+inline TimeSpec extract_atime(StatT const& st) { return st.st_atimespec; }
+#elif defined(__MVS__)
+inline TimeSpec extract_mtime(StatT const& st) {
+  TimeSpec TS = {st.st_mtime, 0};
+  return TS;
+}
+inline TimeSpec extract_atime(StatT const& st) {
+  TimeSpec TS = {st.st_atime, 0};
+  return TS;
+}
+#elif defined(_AIX)
+inline TimeSpec extract_mtime(StatT const& st) {
+  TimeSpec TS = {st.st_mtime, st.st_mtime_n};
+  return TS;
+}
+inline TimeSpec extract_atime(StatT const& st) {
+  TimeSpec TS = {st.st_atime, st.st_atime_n};
+  return TS;
+}
+#else
+inline TimeSpec extract_mtime(StatT const& st) { return st.st_mtim; }
+inline TimeSpec extract_atime(StatT const& st) { return st.st_atim; }
+#endif
+
+#if !defined(_LIBCPP_WIN32API)
+inline TimeVal make_timeval(TimeSpec const& ts) {
+  using namespace chrono;
+  auto Convert = [](long nsec) {
+    using int_type = decltype(std::declval<TimeVal>().tv_usec);
+    auto dur = duration_cast<microseconds>(nanoseconds(nsec)).count();
+    return static_cast<int_type>(dur);
+  };
+  TimeVal TV = {};
+  TV.tv_sec = ts.tv_sec;
+  TV.tv_usec = Convert(ts.tv_nsec);
+  return TV;
+}
+
+inline bool posix_utimes(const path& p, std::array<TimeSpec, 2> const& TS,
+                  error_code& ec) {
+  TimeVal ConvertedTS[2] = {make_timeval(TS[0]), make_timeval(TS[1])};
+  if (::utimes(p.c_str(), ConvertedTS) == -1) {
+    ec = capture_errno();
+    return true;
+  }
+  return false;
+}
+
+#if defined(_LIBCPP_USE_UTIMENSAT)
+bool posix_utimensat(const path& p, std::array<TimeSpec, 2> const& TS,
+                     error_code& ec) {
+  if (::utimensat(AT_FDCWD, p.c_str(), TS.data(), 0) == -1) {
+    ec = capture_errno();
+    return true;
+  }
+  return false;
+}
+#endif
+
+bool set_file_times(const path& p, std::array<TimeSpec, 2> const& TS,
+                    error_code& ec) {
+#if !defined(_LIBCPP_USE_UTIMENSAT)
+  return posix_utimes(p, TS, ec);
+#else
+  return posix_utimensat(p, TS, ec);
+#endif
+}
+
+#if defined(DT_BLK)
+template <class DirEntT, class = decltype(DirEntT::d_type)>
+static file_type get_file_type(DirEntT* ent, int) {
+  switch (ent->d_type) {
+  case DT_BLK:
+    return file_type::block;
+  case DT_CHR:
+    return file_type::character;
+  case DT_DIR:
+    return file_type::directory;
+  case DT_FIFO:
+    return file_type::fifo;
+  case DT_LNK:
+    return file_type::symlink;
+  case DT_REG:
+    return file_type::regular;
+  case DT_SOCK:
+    return file_type::socket;
+  // Unlike in lstat, hitting "unknown" here simply means that the underlying
+  // filesystem doesn't support d_type. Report is as 'none' so we correctly
+  // set the cache to empty.
+  case DT_UNKNOWN:
+    break;
+  }
+  return file_type::none;
+}
+#endif // defined(DT_BLK)
+
+template <class DirEntT>
+static file_type get_file_type(DirEntT*, long) {
+  return file_type::none;
+}
+
+static pair<string_view, file_type> posix_readdir(DIR* dir_stream,
+                                                  error_code& ec) {
+  struct dirent* dir_entry_ptr = nullptr;
+  errno = 0; // zero errno in order to detect errors
+  ec.clear();
+  if ((dir_entry_ptr = ::readdir(dir_stream)) == nullptr) {
+    if (errno)
+      ec = capture_errno();
+    return {};
+  } else {
+    return {dir_entry_ptr->d_name, get_file_type(dir_entry_ptr, 0)};
+  }
+}
+
+#else // _LIBCPP_WIN32API
+
+static file_type get_file_type(const WIN32_FIND_DATAW& data) {
+  if (data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+      data.dwReserved0 == IO_REPARSE_TAG_SYMLINK)
+    return file_type::symlink;
+  if (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+    return file_type::directory;
+  return file_type::regular;
+}
+static uintmax_t get_file_size(const WIN32_FIND_DATAW& data) {
+  return (static_cast<uint64_t>(data.nFileSizeHigh) << 32) + data.nFileSizeLow;
+}
+static file_time_type get_write_time(const WIN32_FIND_DATAW& data) {
+  ULARGE_INTEGER tmp;
+  const FILETIME& time = data.ftLastWriteTime;
+  tmp.u.LowPart = time.dwLowDateTime;
+  tmp.u.HighPart = time.dwHighDateTime;
+  return file_time_type(file_time_type::duration(tmp.QuadPart));
+}
+
+#endif // !_LIBCPP_WIN32API
+
+} // namespace
+} // end namespace detail
+
+_LIBCPP_END_NAMESPACE_FILESYSTEM
+
+_LIBCPP_DIAGNOSTIC_POP
+
+#endif // FILESYSTEM_COMMON_H
diff --git a/app/src/main/cpp/libcxx/src/filesystem/int128_builtins.cpp b/app/src/main/cpp/libcxx/src/filesystem/int128_builtins.cpp
new file mode 100644
index 0000000..f003da2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/filesystem/int128_builtins.cpp
@@ -0,0 +1,54 @@
+/*===-- int128_builtins.cpp - Implement __muloti4 --------------------------===
+ *
+ * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+ * See https://llvm.org/LICENSE.txt for license information.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __muloti4, and is stolen from the compiler_rt library.
+ *
+ * FIXME: we steal and re-compile it into filesystem, which uses __int128_t,
+ * and requires this builtin when sanitized. See llvm.org/PR30643
+ *
+ * ===----------------------------------------------------------------------===
+ */
+#include <__config>
+#include <climits>
+
+#if !defined(_LIBCPP_HAS_NO_INT128)
+
+extern "C" __attribute__((no_sanitize("undefined"))) _LIBCPP_FUNC_VIS
+__int128_t __muloti4(__int128_t a, __int128_t b, int* overflow) {
+  const int N = (int)(sizeof(__int128_t) * CHAR_BIT);
+  const __int128_t MIN = (__int128_t)1 << (N - 1);
+  const __int128_t MAX = ~MIN;
+  *overflow = 0;
+  __int128_t result = a * b;
+  if (a == MIN) {
+    if (b != 0 && b != 1)
+      *overflow = 1;
+    return result;
+  }
+  if (b == MIN) {
+    if (a != 0 && a != 1)
+      *overflow = 1;
+    return result;
+  }
+  __int128_t sa = a >> (N - 1);
+  __int128_t abs_a = (a ^ sa) - sa;
+  __int128_t sb = b >> (N - 1);
+  __int128_t abs_b = (b ^ sb) - sb;
+  if (abs_a < 2 || abs_b < 2)
+    return result;
+  if (sa == sb) {
+    if (abs_a > MAX / abs_b)
+      *overflow = 1;
+  } else {
+    if (abs_a > MIN / -abs_b)
+      *overflow = 1;
+  }
+  return result;
+}
+
+#endif
diff --git a/app/src/main/cpp/libcxx/src/filesystem/operations.cpp b/app/src/main/cpp/libcxx/src/filesystem/operations.cpp
new file mode 100644
index 0000000..af31fe0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/filesystem/operations.cpp
@@ -0,0 +1,2108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <__utility/unreachable.h>
+#include <array>
+#include <climits>
+#include <cstdlib>
+#include <filesystem>
+#include <iterator>
+#include <string_view>
+#include <type_traits>
+#include <vector>
+
+#include "filesystem_common.h"
+
+#include "posix_compat.h"
+
+#if defined(_LIBCPP_WIN32API)
+# define WIN32_LEAN_AND_MEAN
+# define NOMINMAX
+# include <windows.h>
+#else
+# include <dirent.h>
+# include <sys/stat.h>
+# include <sys/statvfs.h>
+# include <unistd.h>
+#endif
+#include <time.h>
+#include <fcntl.h> /* values for fchmodat */
+
+#if __has_include(<sys/sendfile.h>)
+# include <sys/sendfile.h>
+# define _LIBCPP_FILESYSTEM_USE_SENDFILE
+#elif defined(__APPLE__) || __has_include(<copyfile.h>)
+# include <copyfile.h>
+# define _LIBCPP_FILESYSTEM_USE_COPYFILE
+#else
+# include <fstream>
+# define _LIBCPP_FILESYSTEM_USE_FSTREAM
+#endif
+
+#if !defined(CLOCK_REALTIME) && !defined(_LIBCPP_WIN32API)
+# include <sys/time.h> // for gettimeofday and timeval
+#endif
+
+#if defined(__ELF__) && defined(_LIBCPP_LINK_RT_LIB)
+# pragma comment(lib, "rt")
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
+
+namespace {
+
+bool isSeparator(path::value_type C) {
+  if (C == '/')
+    return true;
+#if defined(_LIBCPP_WIN32API)
+  if (C == '\\')
+    return true;
+#endif
+  return false;
+}
+
+bool isDriveLetter(path::value_type C) {
+  return (C >= 'a' && C <= 'z') || (C >= 'A' && C <= 'Z');
+}
+
+namespace parser {
+
+using string_view_t = path::__string_view;
+using string_view_pair = pair<string_view_t, string_view_t>;
+using PosPtr = path::value_type const*;
+
+struct PathParser {
+  enum ParserState : unsigned char {
+    // Zero is a special sentinel value used by default constructed iterators.
+    PS_BeforeBegin = path::iterator::_BeforeBegin,
+    PS_InRootName = path::iterator::_InRootName,
+    PS_InRootDir = path::iterator::_InRootDir,
+    PS_InFilenames = path::iterator::_InFilenames,
+    PS_InTrailingSep = path::iterator::_InTrailingSep,
+    PS_AtEnd = path::iterator::_AtEnd
+  };
+
+  const string_view_t Path;
+  string_view_t RawEntry;
+  ParserState State;
+
+private:
+  PathParser(string_view_t P, ParserState State) noexcept : Path(P),
+                                                            State(State) {}
+
+public:
+  PathParser(string_view_t P, string_view_t E, unsigned char S)
+      : Path(P), RawEntry(E), State(static_cast<ParserState>(S)) {
+    // S cannot be '0' or PS_BeforeBegin.
+  }
+
+  static PathParser CreateBegin(string_view_t P) noexcept {
+    PathParser PP(P, PS_BeforeBegin);
+    PP.increment();
+    return PP;
+  }
+
+  static PathParser CreateEnd(string_view_t P) noexcept {
+    PathParser PP(P, PS_AtEnd);
+    return PP;
+  }
+
+  PosPtr peek() const noexcept {
+    auto TkEnd = getNextTokenStartPos();
+    auto End = getAfterBack();
+    return TkEnd == End ? nullptr : TkEnd;
+  }
+
+  void increment() noexcept {
+    const PosPtr End = getAfterBack();
+    const PosPtr Start = getNextTokenStartPos();
+    if (Start == End)
+      return makeState(PS_AtEnd);
+
+    switch (State) {
+    case PS_BeforeBegin: {
+      PosPtr TkEnd = consumeRootName(Start, End);
+      if (TkEnd)
+        return makeState(PS_InRootName, Start, TkEnd);
+    }
+      _LIBCPP_FALLTHROUGH();
+    case PS_InRootName: {
+      PosPtr TkEnd = consumeAllSeparators(Start, End);
+      if (TkEnd)
+        return makeState(PS_InRootDir, Start, TkEnd);
+      else
+        return makeState(PS_InFilenames, Start, consumeName(Start, End));
+    }
+    case PS_InRootDir:
+      return makeState(PS_InFilenames, Start, consumeName(Start, End));
+
+    case PS_InFilenames: {
+      PosPtr SepEnd = consumeAllSeparators(Start, End);
+      if (SepEnd != End) {
+        PosPtr TkEnd = consumeName(SepEnd, End);
+        if (TkEnd)
+          return makeState(PS_InFilenames, SepEnd, TkEnd);
+      }
+      return makeState(PS_InTrailingSep, Start, SepEnd);
+    }
+
+    case PS_InTrailingSep:
+      return makeState(PS_AtEnd);
+
+    case PS_AtEnd:
+      __libcpp_unreachable();
+    }
+  }
+
+  void decrement() noexcept {
+    const PosPtr REnd = getBeforeFront();
+    const PosPtr RStart = getCurrentTokenStartPos() - 1;
+    if (RStart == REnd) // we're decrementing the begin
+      return makeState(PS_BeforeBegin);
+
+    switch (State) {
+    case PS_AtEnd: {
+      // Try to consume a trailing separator or root directory first.
+      if (PosPtr SepEnd = consumeAllSeparators(RStart, REnd)) {
+        if (SepEnd == REnd)
+          return makeState(PS_InRootDir, Path.data(), RStart + 1);
+        PosPtr TkStart = consumeRootName(SepEnd, REnd);
+        if (TkStart == REnd)
+          return makeState(PS_InRootDir, RStart, RStart + 1);
+        return makeState(PS_InTrailingSep, SepEnd + 1, RStart + 1);
+      } else {
+        PosPtr TkStart = consumeRootName(RStart, REnd);
+        if (TkStart == REnd)
+          return makeState(PS_InRootName, TkStart + 1, RStart + 1);
+        TkStart = consumeName(RStart, REnd);
+        return makeState(PS_InFilenames, TkStart + 1, RStart + 1);
+      }
+    }
+    case PS_InTrailingSep:
+      return makeState(PS_InFilenames, consumeName(RStart, REnd) + 1,
+                       RStart + 1);
+    case PS_InFilenames: {
+      PosPtr SepEnd = consumeAllSeparators(RStart, REnd);
+      if (SepEnd == REnd)
+        return makeState(PS_InRootDir, Path.data(), RStart + 1);
+      PosPtr TkStart = consumeRootName(SepEnd ? SepEnd : RStart, REnd);
+      if (TkStart == REnd) {
+        if (SepEnd)
+          return makeState(PS_InRootDir, SepEnd + 1, RStart + 1);
+        return makeState(PS_InRootName, TkStart + 1, RStart + 1);
+      }
+      TkStart = consumeName(SepEnd, REnd);
+      return makeState(PS_InFilenames, TkStart + 1, SepEnd + 1);
+    }
+    case PS_InRootDir:
+      return makeState(PS_InRootName, Path.data(), RStart + 1);
+    case PS_InRootName:
+    case PS_BeforeBegin:
+      __libcpp_unreachable();
+    }
+  }
+
+  /// \brief Return a view with the "preferred representation" of the current
+  ///   element. For example trailing separators are represented as a '.'
+  string_view_t operator*() const noexcept {
+    switch (State) {
+    case PS_BeforeBegin:
+    case PS_AtEnd:
+      return PATHSTR("");
+    case PS_InRootDir:
+      if (RawEntry[0] == '\\')
+        return PATHSTR("\\");
+      else
+        return PATHSTR("/");
+    case PS_InTrailingSep:
+      return PATHSTR("");
+    case PS_InRootName:
+    case PS_InFilenames:
+      return RawEntry;
+    }
+    __libcpp_unreachable();
+  }
+
+  explicit operator bool() const noexcept {
+    return State != PS_BeforeBegin && State != PS_AtEnd;
+  }
+
+  PathParser& operator++() noexcept {
+    increment();
+    return *this;
+  }
+
+  PathParser& operator--() noexcept {
+    decrement();
+    return *this;
+  }
+
+  bool atEnd() const noexcept {
+    return State == PS_AtEnd;
+  }
+
+  bool inRootDir() const noexcept {
+    return State == PS_InRootDir;
+  }
+
+  bool inRootName() const noexcept {
+    return State == PS_InRootName;
+  }
+
+  bool inRootPath() const noexcept {
+    return inRootName() || inRootDir();
+  }
+
+private:
+  void makeState(ParserState NewState, PosPtr Start, PosPtr End) noexcept {
+    State = NewState;
+    RawEntry = string_view_t(Start, End - Start);
+  }
+  void makeState(ParserState NewState) noexcept {
+    State = NewState;
+    RawEntry = {};
+  }
+
+  PosPtr getAfterBack() const noexcept { return Path.data() + Path.size(); }
+
+  PosPtr getBeforeFront() const noexcept { return Path.data() - 1; }
+
+  /// \brief Return a pointer to the first character after the currently
+  ///   lexed element.
+  PosPtr getNextTokenStartPos() const noexcept {
+    switch (State) {
+    case PS_BeforeBegin:
+      return Path.data();
+    case PS_InRootName:
+    case PS_InRootDir:
+    case PS_InFilenames:
+      return &RawEntry.back() + 1;
+    case PS_InTrailingSep:
+    case PS_AtEnd:
+      return getAfterBack();
+    }
+    __libcpp_unreachable();
+  }
+
+  /// \brief Return a pointer to the first character in the currently lexed
+  ///   element.
+  PosPtr getCurrentTokenStartPos() const noexcept {
+    switch (State) {
+    case PS_BeforeBegin:
+    case PS_InRootName:
+      return &Path.front();
+    case PS_InRootDir:
+    case PS_InFilenames:
+    case PS_InTrailingSep:
+      return &RawEntry.front();
+    case PS_AtEnd:
+      return &Path.back() + 1;
+    }
+    __libcpp_unreachable();
+  }
+
+  // Consume all consecutive separators.
+  PosPtr consumeAllSeparators(PosPtr P, PosPtr End) const noexcept {
+    if (P == nullptr || P == End || !isSeparator(*P))
+      return nullptr;
+    const int Inc = P < End ? 1 : -1;
+    P += Inc;
+    while (P != End && isSeparator(*P))
+      P += Inc;
+    return P;
+  }
+
+  // Consume exactly N separators, or return nullptr.
+  PosPtr consumeNSeparators(PosPtr P, PosPtr End, int N) const noexcept {
+    PosPtr Ret = consumeAllSeparators(P, End);
+    if (Ret == nullptr)
+      return nullptr;
+    if (P < End) {
+      if (Ret == P + N)
+        return Ret;
+    } else {
+      if (Ret == P - N)
+        return Ret;
+    }
+    return nullptr;
+  }
+
+  PosPtr consumeName(PosPtr P, PosPtr End) const noexcept {
+    PosPtr Start = P;
+    if (P == nullptr || P == End || isSeparator(*P))
+      return nullptr;
+    const int Inc = P < End ? 1 : -1;
+    P += Inc;
+    while (P != End && !isSeparator(*P))
+      P += Inc;
+    if (P == End && Inc < 0) {
+      // Iterating backwards and consumed all the rest of the input.
+      // Check if the start of the string would have been considered
+      // a root name.
+      PosPtr RootEnd = consumeRootName(End + 1, Start);
+      if (RootEnd)
+        return RootEnd - 1;
+    }
+    return P;
+  }
+
+  PosPtr consumeDriveLetter(PosPtr P, PosPtr End) const noexcept {
+    if (P == End)
+      return nullptr;
+    if (P < End) {
+      if (P + 1 == End || !isDriveLetter(P[0]) || P[1] != ':')
+        return nullptr;
+      return P + 2;
+    } else {
+      if (P - 1 == End || !isDriveLetter(P[-1]) || P[0] != ':')
+        return nullptr;
+      return P - 2;
+    }
+  }
+
+  PosPtr consumeNetworkRoot(PosPtr P, PosPtr End) const noexcept {
+    if (P == End)
+      return nullptr;
+    if (P < End)
+      return consumeName(consumeNSeparators(P, End, 2), End);
+    else
+      return consumeNSeparators(consumeName(P, End), End, 2);
+  }
+
+  PosPtr consumeRootName(PosPtr P, PosPtr End) const noexcept {
+#if defined(_LIBCPP_WIN32API)
+    if (PosPtr Ret = consumeDriveLetter(P, End))
+      return Ret;
+    if (PosPtr Ret = consumeNetworkRoot(P, End))
+      return Ret;
+#endif
+    return nullptr;
+  }
+};
+
+string_view_pair separate_filename(string_view_t const& s) {
+  if (s == PATHSTR(".") || s == PATHSTR("..") || s.empty())
+    return string_view_pair{s, PATHSTR("")};
+  auto pos = s.find_last_of('.');
+  if (pos == string_view_t::npos || pos == 0)
+    return string_view_pair{s, string_view_t{}};
+  return string_view_pair{s.substr(0, pos), s.substr(pos)};
+}
+
+string_view_t createView(PosPtr S, PosPtr E) noexcept {
+  return {S, static_cast<size_t>(E - S) + 1};
+}
+
+} // namespace parser
+} // namespace
+
+//                       POSIX HELPERS
+
+#if defined(_LIBCPP_WIN32API)
+namespace detail {
+
+errc __win_err_to_errc(int err) {
+  constexpr struct {
+    DWORD win;
+    errc errc;
+  } win_error_mapping[] = {
+      {ERROR_ACCESS_DENIED, errc::permission_denied},
+      {ERROR_ALREADY_EXISTS, errc::file_exists},
+      {ERROR_BAD_NETPATH, errc::no_such_file_or_directory},
+      {ERROR_BAD_PATHNAME, errc::no_such_file_or_directory},
+      {ERROR_BAD_UNIT, errc::no_such_device},
+      {ERROR_BROKEN_PIPE, errc::broken_pipe},
+      {ERROR_BUFFER_OVERFLOW, errc::filename_too_long},
+      {ERROR_BUSY, errc::device_or_resource_busy},
+      {ERROR_BUSY_DRIVE, errc::device_or_resource_busy},
+      {ERROR_CANNOT_MAKE, errc::permission_denied},
+      {ERROR_CANTOPEN, errc::io_error},
+      {ERROR_CANTREAD, errc::io_error},
+      {ERROR_CANTWRITE, errc::io_error},
+      {ERROR_CURRENT_DIRECTORY, errc::permission_denied},
+      {ERROR_DEV_NOT_EXIST, errc::no_such_device},
+      {ERROR_DEVICE_IN_USE, errc::device_or_resource_busy},
+      {ERROR_DIR_NOT_EMPTY, errc::directory_not_empty},
+      {ERROR_DIRECTORY, errc::invalid_argument},
+      {ERROR_DISK_FULL, errc::no_space_on_device},
+      {ERROR_FILE_EXISTS, errc::file_exists},
+      {ERROR_FILE_NOT_FOUND, errc::no_such_file_or_directory},
+      {ERROR_HANDLE_DISK_FULL, errc::no_space_on_device},
+      {ERROR_INVALID_ACCESS, errc::permission_denied},
+      {ERROR_INVALID_DRIVE, errc::no_such_device},
+      {ERROR_INVALID_FUNCTION, errc::function_not_supported},
+      {ERROR_INVALID_HANDLE, errc::invalid_argument},
+      {ERROR_INVALID_NAME, errc::no_such_file_or_directory},
+      {ERROR_INVALID_PARAMETER, errc::invalid_argument},
+      {ERROR_LOCK_VIOLATION, errc::no_lock_available},
+      {ERROR_LOCKED, errc::no_lock_available},
+      {ERROR_NEGATIVE_SEEK, errc::invalid_argument},
+      {ERROR_NOACCESS, errc::permission_denied},
+      {ERROR_NOT_ENOUGH_MEMORY, errc::not_enough_memory},
+      {ERROR_NOT_READY, errc::resource_unavailable_try_again},
+      {ERROR_NOT_SAME_DEVICE, errc::cross_device_link},
+      {ERROR_NOT_SUPPORTED, errc::not_supported},
+      {ERROR_OPEN_FAILED, errc::io_error},
+      {ERROR_OPEN_FILES, errc::device_or_resource_busy},
+      {ERROR_OPERATION_ABORTED, errc::operation_canceled},
+      {ERROR_OUTOFMEMORY, errc::not_enough_memory},
+      {ERROR_PATH_NOT_FOUND, errc::no_such_file_or_directory},
+      {ERROR_READ_FAULT, errc::io_error},
+      {ERROR_REPARSE_TAG_INVALID, errc::invalid_argument},
+      {ERROR_RETRY, errc::resource_unavailable_try_again},
+      {ERROR_SEEK, errc::io_error},
+      {ERROR_SHARING_VIOLATION, errc::permission_denied},
+      {ERROR_TOO_MANY_OPEN_FILES, errc::too_many_files_open},
+      {ERROR_WRITE_FAULT, errc::io_error},
+      {ERROR_WRITE_PROTECT, errc::permission_denied},
+  };
+
+  for (const auto &pair : win_error_mapping)
+    if (pair.win == static_cast<DWORD>(err))
+      return pair.errc;
+  return errc::invalid_argument;
+}
+
+} // namespace detail
+#endif
+
+namespace detail {
+namespace {
+
+using value_type = path::value_type;
+using string_type = path::string_type;
+
+struct FileDescriptor {
+  const path& name;
+  int fd = -1;
+  StatT m_stat;
+  file_status m_status;
+
+  template <class... Args>
+  static FileDescriptor create(const path* p, error_code& ec, Args... args) {
+    ec.clear();
+    int fd;
+    if ((fd = detail::open(p->c_str(), args...)) == -1) {
+      ec = capture_errno();
+      return FileDescriptor{p};
+    }
+    return FileDescriptor(p, fd);
+  }
+
+  template <class... Args>
+  static FileDescriptor create_with_status(const path* p, error_code& ec,
+                                           Args... args) {
+    FileDescriptor fd = create(p, ec, args...);
+    if (!ec)
+      fd.refresh_status(ec);
+
+    return fd;
+  }
+
+  file_status get_status() const { return m_status; }
+  StatT const& get_stat() const { return m_stat; }
+
+  bool status_known() const { return _VSTD_FS::status_known(m_status); }
+
+  file_status refresh_status(error_code& ec);
+
+  void close() noexcept {
+    if (fd != -1)
+      detail::close(fd);
+    fd = -1;
+  }
+
+  FileDescriptor(FileDescriptor&& other)
+      : name(other.name), fd(other.fd), m_stat(other.m_stat),
+        m_status(other.m_status) {
+    other.fd = -1;
+    other.m_status = file_status{};
+  }
+
+  ~FileDescriptor() { close(); }
+
+  FileDescriptor(FileDescriptor const&) = delete;
+  FileDescriptor& operator=(FileDescriptor const&) = delete;
+
+private:
+  explicit FileDescriptor(const path* p, int fd = -1) : name(*p), fd(fd) {}
+};
+
+perms posix_get_perms(const StatT& st) noexcept {
+  return static_cast<perms>(st.st_mode) & perms::mask;
+}
+
+file_status create_file_status(error_code& m_ec, path const& p,
+                               const StatT& path_stat, error_code* ec) {
+  if (ec)
+    *ec = m_ec;
+  if (m_ec && (m_ec.value() == ENOENT || m_ec.value() == ENOTDIR)) {
+    return file_status(file_type::not_found);
+  } else if (m_ec) {
+    ErrorHandler<void> err("posix_stat", ec, &p);
+    err.report(m_ec, "failed to determine attributes for the specified path");
+    return file_status(file_type::none);
+  }
+  // else
+
+  file_status fs_tmp;
+  auto const mode = path_stat.st_mode;
+  if (S_ISLNK(mode))
+    fs_tmp.type(file_type::symlink);
+  else if (S_ISREG(mode))
+    fs_tmp.type(file_type::regular);
+  else if (S_ISDIR(mode))
+    fs_tmp.type(file_type::directory);
+  else if (S_ISBLK(mode))
+    fs_tmp.type(file_type::block);
+  else if (S_ISCHR(mode))
+    fs_tmp.type(file_type::character);
+  else if (S_ISFIFO(mode))
+    fs_tmp.type(file_type::fifo);
+  else if (S_ISSOCK(mode))
+    fs_tmp.type(file_type::socket);
+  else
+    fs_tmp.type(file_type::unknown);
+
+  fs_tmp.permissions(detail::posix_get_perms(path_stat));
+  return fs_tmp;
+}
+
+file_status posix_stat(path const& p, StatT& path_stat, error_code* ec) {
+  error_code m_ec;
+  if (detail::stat(p.c_str(), &path_stat) == -1)
+    m_ec = detail::capture_errno();
+  return create_file_status(m_ec, p, path_stat, ec);
+}
+
+file_status posix_stat(path const& p, error_code* ec) {
+  StatT path_stat;
+  return posix_stat(p, path_stat, ec);
+}
+
+file_status posix_lstat(path const& p, StatT& path_stat, error_code* ec) {
+  error_code m_ec;
+  if (detail::lstat(p.c_str(), &path_stat) == -1)
+    m_ec = detail::capture_errno();
+  return create_file_status(m_ec, p, path_stat, ec);
+}
+
+file_status posix_lstat(path const& p, error_code* ec) {
+  StatT path_stat;
+  return posix_lstat(p, path_stat, ec);
+}
+
+// http://pubs.opengroup.org/onlinepubs/9699919799/functions/ftruncate.html
+bool posix_ftruncate(const FileDescriptor& fd, off_t to_size, error_code& ec) {
+  if (detail::ftruncate(fd.fd, to_size) == -1) {
+    ec = capture_errno();
+    return true;
+  }
+  ec.clear();
+  return false;
+}
+
+bool posix_fchmod(const FileDescriptor& fd, const StatT& st, error_code& ec) {
+  if (detail::fchmod(fd.fd, st.st_mode) == -1) {
+    ec = capture_errno();
+    return true;
+  }
+  ec.clear();
+  return false;
+}
+
+bool stat_equivalent(const StatT& st1, const StatT& st2) {
+  return (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino);
+}
+
+file_status FileDescriptor::refresh_status(error_code& ec) {
+  // FD must be open and good.
+  m_status = file_status{};
+  m_stat = {};
+  error_code m_ec;
+  if (detail::fstat(fd, &m_stat) == -1)
+    m_ec = capture_errno();
+  m_status = create_file_status(m_ec, name, m_stat, &ec);
+  return m_status;
+}
+} // namespace
+} // end namespace detail
+
+using detail::capture_errno;
+using detail::ErrorHandler;
+using detail::StatT;
+using detail::TimeSpec;
+using parser::createView;
+using parser::PathParser;
+using parser::string_view_t;
+
+const bool _FilesystemClock::is_steady;
+
+_FilesystemClock::time_point _FilesystemClock::now() noexcept {
+  typedef chrono::duration<rep> __secs;
+#if defined(_LIBCPP_WIN32API)
+  typedef chrono::duration<rep, nano> __nsecs;
+  FILETIME time;
+  GetSystemTimeAsFileTime(&time);
+  TimeSpec tp = detail::filetime_to_timespec(time);
+  return time_point(__secs(tp.tv_sec) +
+                    chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
+#elif defined(CLOCK_REALTIME)
+  typedef chrono::duration<rep, nano> __nsecs;
+  struct timespec tp;
+  if (0 != clock_gettime(CLOCK_REALTIME, &tp))
+    __throw_system_error(errno, "clock_gettime(CLOCK_REALTIME) failed");
+  return time_point(__secs(tp.tv_sec) +
+                    chrono::duration_cast<duration>(__nsecs(tp.tv_nsec)));
+#else
+  typedef chrono::duration<rep, micro> __microsecs;
+  timeval tv;
+  gettimeofday(&tv, 0);
+  return time_point(__secs(tv.tv_sec) + __microsecs(tv.tv_usec));
+#endif // CLOCK_REALTIME
+}
+
+filesystem_error::~filesystem_error() {}
+
+void filesystem_error::__create_what(int __num_paths) {
+  const char* derived_what = system_error::what();
+  __storage_->__what_ = [&]() -> string {
+    switch (__num_paths) {
+    case 0:
+      return detail::format_string("filesystem error: %s", derived_what);
+    case 1:
+      return detail::format_string("filesystem error: %s [" PATH_CSTR_FMT "]",
+                                   derived_what, path1().c_str());
+    case 2:
+      return detail::format_string("filesystem error: %s [" PATH_CSTR_FMT "] [" PATH_CSTR_FMT "]",
+                                   derived_what, path1().c_str(), path2().c_str());
+    }
+    __libcpp_unreachable();
+  }();
+}
+
+static path __do_absolute(const path& p, path* cwd, error_code* ec) {
+  if (ec)
+    ec->clear();
+  if (p.is_absolute())
+    return p;
+  *cwd = __current_path(ec);
+  if (ec && *ec)
+    return {};
+  return (*cwd) / p;
+}
+
+path __absolute(const path& p, error_code* ec) {
+  path cwd;
+  return __do_absolute(p, &cwd, ec);
+}
+
+path __canonical(path const& orig_p, error_code* ec) {
+  path cwd;
+  ErrorHandler<path> err("canonical", ec, &orig_p, &cwd);
+
+  path p = __do_absolute(orig_p, &cwd, ec);
+#if (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112) || defined(_LIBCPP_WIN32API)
+  std::unique_ptr<path::value_type, decltype(&::free)>
+    hold(detail::realpath(p.c_str(), nullptr), &::free);
+  if (hold.get() == nullptr)
+    return err.report(capture_errno());
+  return {hold.get()};
+#else
+  #if defined(__MVS__) && !defined(PATH_MAX)
+    path::value_type buff[ _XOPEN_PATH_MAX + 1 ];
+  #else
+    path::value_type buff[PATH_MAX + 1];
+  #endif
+  path::value_type* ret;
+  if ((ret = detail::realpath(p.c_str(), buff)) == nullptr)
+    return err.report(capture_errno());
+  return {ret};
+#endif
+}
+
+void __copy(const path& from, const path& to, copy_options options,
+            error_code* ec) {
+  ErrorHandler<void> err("copy", ec, &from, &to);
+
+  const bool sym_status = bool(
+      options & (copy_options::create_symlinks | copy_options::skip_symlinks));
+
+  const bool sym_status2 = bool(options & copy_options::copy_symlinks);
+
+  error_code m_ec1;
+  StatT f_st = {};
+  const file_status f = sym_status || sym_status2
+                            ? detail::posix_lstat(from, f_st, &m_ec1)
+                            : detail::posix_stat(from, f_st, &m_ec1);
+  if (m_ec1)
+    return err.report(m_ec1);
+
+  StatT t_st = {};
+  const file_status t = sym_status ? detail::posix_lstat(to, t_st, &m_ec1)
+                                   : detail::posix_stat(to, t_st, &m_ec1);
+
+  if (not status_known(t))
+    return err.report(m_ec1);
+
+  if (!exists(f) || is_other(f) || is_other(t) ||
+      (is_directory(f) && is_regular_file(t)) ||
+      detail::stat_equivalent(f_st, t_st)) {
+    return err.report(errc::function_not_supported);
+  }
+
+  if (ec)
+    ec->clear();
+
+  if (is_symlink(f)) {
+    if (bool(copy_options::skip_symlinks & options)) {
+      // do nothing
+    } else if (not exists(t)) {
+      __copy_symlink(from, to, ec);
+    } else {
+      return err.report(errc::file_exists);
+    }
+    return;
+  } else if (is_regular_file(f)) {
+    if (bool(copy_options::directories_only & options)) {
+      // do nothing
+    } else if (bool(copy_options::create_symlinks & options)) {
+      __create_symlink(from, to, ec);
+    } else if (bool(copy_options::create_hard_links & options)) {
+      __create_hard_link(from, to, ec);
+    } else if (is_directory(t)) {
+      __copy_file(from, to / from.filename(), options, ec);
+    } else {
+      __copy_file(from, to, options, ec);
+    }
+    return;
+  } else if (is_directory(f) && bool(copy_options::create_symlinks & options)) {
+    return err.report(errc::is_a_directory);
+  } else if (is_directory(f) && (bool(copy_options::recursive & options) ||
+                                 copy_options::none == options)) {
+
+    if (!exists(t)) {
+      // create directory to with attributes from 'from'.
+      __create_directory(to, from, ec);
+      if (ec && *ec) {
+        return;
+      }
+    }
+    directory_iterator it =
+        ec ? directory_iterator(from, *ec) : directory_iterator(from);
+    if (ec && *ec) {
+      return;
+    }
+    error_code m_ec2;
+    for (; it != directory_iterator(); it.increment(m_ec2)) {
+      if (m_ec2) {
+        return err.report(m_ec2);
+      }
+      __copy(it->path(), to / it->path().filename(),
+             options | copy_options::__in_recursive_copy, ec);
+      if (ec && *ec) {
+        return;
+      }
+    }
+  }
+}
+
+namespace detail {
+namespace {
+
+#if defined(_LIBCPP_FILESYSTEM_USE_SENDFILE)
+  bool copy_file_impl(FileDescriptor& read_fd, FileDescriptor& write_fd, error_code& ec) {
+    size_t count = read_fd.get_stat().st_size;
+    do {
+      ssize_t res;
+      if ((res = ::sendfile(write_fd.fd, read_fd.fd, nullptr, count)) == -1) {
+        ec = capture_errno();
+        return false;
+      }
+      count -= res;
+    } while (count > 0);
+
+    ec.clear();
+
+    return true;
+  }
+#elif defined(_LIBCPP_FILESYSTEM_USE_COPYFILE)
+  bool copy_file_impl(FileDescriptor& read_fd, FileDescriptor& write_fd, error_code& ec) {
+    struct CopyFileState {
+      copyfile_state_t state;
+      CopyFileState() { state = copyfile_state_alloc(); }
+      ~CopyFileState() { copyfile_state_free(state); }
+
+    private:
+      CopyFileState(CopyFileState const&) = delete;
+      CopyFileState& operator=(CopyFileState const&) = delete;
+    };
+
+    CopyFileState cfs;
+    if (fcopyfile(read_fd.fd, write_fd.fd, cfs.state, COPYFILE_DATA) < 0) {
+      ec = capture_errno();
+      return false;
+    }
+
+    ec.clear();
+    return true;
+  }
+#elif defined(_LIBCPP_FILESYSTEM_USE_FSTREAM)
+  bool copy_file_impl(FileDescriptor& read_fd, FileDescriptor& write_fd, error_code& ec) {
+    ifstream in;
+    in.__open(read_fd.fd, ios::binary);
+    if (!in.is_open()) {
+      // This assumes that __open didn't reset the error code.
+      ec = capture_errno();
+      return false;
+    }
+    read_fd.fd = -1;
+    ofstream out;
+    out.__open(write_fd.fd, ios::binary);
+    if (!out.is_open()) {
+      ec = capture_errno();
+      return false;
+    }
+    write_fd.fd = -1;
+
+    if (in.good() && out.good()) {
+      using InIt = istreambuf_iterator<char>;
+      using OutIt = ostreambuf_iterator<char>;
+      InIt bin(in);
+      InIt ein;
+      OutIt bout(out);
+      copy(bin, ein, bout);
+    }
+    if (out.fail() || in.fail()) {
+      ec = make_error_code(errc::io_error);
+      return false;
+    }
+
+    ec.clear();
+    return true;
+  }
+#else
+# error "Unknown implementation for copy_file_impl"
+#endif // copy_file_impl implementation
+
+} // end anonymous namespace
+} // end namespace detail
+
+bool __copy_file(const path& from, const path& to, copy_options options,
+                 error_code* ec) {
+  using detail::FileDescriptor;
+  ErrorHandler<bool> err("copy_file", ec, &to, &from);
+
+  error_code m_ec;
+  FileDescriptor from_fd = FileDescriptor::create_with_status(
+      &from, m_ec, O_RDONLY | O_NONBLOCK | O_BINARY);
+  if (m_ec)
+    return err.report(m_ec);
+
+  auto from_st = from_fd.get_status();
+  StatT const& from_stat = from_fd.get_stat();
+  if (!is_regular_file(from_st)) {
+    if (not m_ec)
+      m_ec = make_error_code(errc::not_supported);
+    return err.report(m_ec);
+  }
+
+  const bool skip_existing = bool(copy_options::skip_existing & options);
+  const bool update_existing = bool(copy_options::update_existing & options);
+  const bool overwrite_existing =
+      bool(copy_options::overwrite_existing & options);
+
+  StatT to_stat_path;
+  file_status to_st = detail::posix_stat(to, to_stat_path, &m_ec);
+  if (!status_known(to_st))
+    return err.report(m_ec);
+
+  const bool to_exists = exists(to_st);
+  if (to_exists && !is_regular_file(to_st))
+    return err.report(errc::not_supported);
+
+  if (to_exists && detail::stat_equivalent(from_stat, to_stat_path))
+    return err.report(errc::file_exists);
+
+  if (to_exists && skip_existing)
+    return false;
+
+  bool ShouldCopy = [&]() {
+    if (to_exists && update_existing) {
+      auto from_time = detail::extract_mtime(from_stat);
+      auto to_time = detail::extract_mtime(to_stat_path);
+      if (from_time.tv_sec < to_time.tv_sec)
+        return false;
+      if (from_time.tv_sec == to_time.tv_sec &&
+          from_time.tv_nsec <= to_time.tv_nsec)
+        return false;
+      return true;
+    }
+    if (!to_exists || overwrite_existing)
+      return true;
+    return err.report(errc::file_exists);
+  }();
+  if (!ShouldCopy)
+    return false;
+
+  // Don't truncate right away. We may not be opening the file we originally
+  // looked at; we'll check this later.
+  int to_open_flags = O_WRONLY | O_BINARY;
+  if (!to_exists)
+    to_open_flags |= O_CREAT;
+  FileDescriptor to_fd = FileDescriptor::create_with_status(
+      &to, m_ec, to_open_flags, from_stat.st_mode);
+  if (m_ec)
+    return err.report(m_ec);
+
+  if (to_exists) {
+    // Check that the file we initially stat'ed is equivalent to the one
+    // we opened.
+    // FIXME: report this better.
+    if (!detail::stat_equivalent(to_stat_path, to_fd.get_stat()))
+      return err.report(errc::bad_file_descriptor);
+
+    // Set the permissions and truncate the file we opened.
+    if (detail::posix_fchmod(to_fd, from_stat, m_ec))
+      return err.report(m_ec);
+    if (detail::posix_ftruncate(to_fd, 0, m_ec))
+      return err.report(m_ec);
+  }
+
+  if (!copy_file_impl(from_fd, to_fd, m_ec)) {
+    // FIXME: Remove the dest file if we failed, and it didn't exist previously.
+    return err.report(m_ec);
+  }
+
+  return true;
+}
+
+void __copy_symlink(const path& existing_symlink, const path& new_symlink,
+                    error_code* ec) {
+  const path real_path(__read_symlink(existing_symlink, ec));
+  if (ec && *ec) {
+    return;
+  }
+#if defined(_LIBCPP_WIN32API)
+  error_code local_ec;
+  if (is_directory(real_path, local_ec))
+    __create_directory_symlink(real_path, new_symlink, ec);
+  else
+#endif
+    __create_symlink(real_path, new_symlink, ec);
+}
+
+bool __create_directories(const path& p, error_code* ec) {
+  ErrorHandler<bool> err("create_directories", ec, &p);
+
+  error_code m_ec;
+  auto const st = detail::posix_stat(p, &m_ec);
+  if (!status_known(st))
+    return err.report(m_ec);
+  else if (is_directory(st))
+    return false;
+  else if (exists(st))
+    return err.report(errc::file_exists);
+
+  const path parent = p.parent_path();
+  if (!parent.empty()) {
+    const file_status parent_st = status(parent, m_ec);
+    if (not status_known(parent_st))
+      return err.report(m_ec);
+    if (not exists(parent_st)) {
+      if (parent == p)
+        return err.report(errc::invalid_argument);
+      __create_directories(parent, ec);
+      if (ec && *ec) {
+        return false;
+      }
+    } else if (not is_directory(parent_st))
+      return err.report(errc::not_a_directory);
+  }
+  bool ret = __create_directory(p, &m_ec);
+  if (m_ec)
+    return err.report(m_ec);
+  return ret;
+}
+
+bool __create_directory(const path& p, error_code* ec) {
+  ErrorHandler<bool> err("create_directory", ec, &p);
+
+  if (detail::mkdir(p.c_str(), static_cast<int>(perms::all)) == 0)
+    return true;
+
+  if (errno != EEXIST)
+    return err.report(capture_errno());
+  error_code mec = capture_errno();
+  error_code ignored_ec;
+  const file_status st = status(p, ignored_ec);
+  if (!is_directory(st))
+    return err.report(mec);
+  return false;
+}
+
+bool __create_directory(path const& p, path const& attributes, error_code* ec) {
+  ErrorHandler<bool> err("create_directory", ec, &p, &attributes);
+
+  StatT attr_stat;
+  error_code mec;
+  file_status st = detail::posix_stat(attributes, attr_stat, &mec);
+  if (!status_known(st))
+    return err.report(mec);
+  if (!is_directory(st))
+    return err.report(errc::not_a_directory,
+                      "the specified attribute path is invalid");
+
+  if (detail::mkdir(p.c_str(), attr_stat.st_mode) == 0)
+    return true;
+
+  if (errno != EEXIST)
+    return err.report(capture_errno());
+
+  mec = capture_errno();
+  error_code ignored_ec;
+  st = status(p, ignored_ec);
+  if (!is_directory(st))
+    return err.report(mec);
+  return false;
+}
+
+void __create_directory_symlink(path const& from, path const& to,
+                                error_code* ec) {
+  ErrorHandler<void> err("create_directory_symlink", ec, &from, &to);
+  if (detail::symlink_dir(from.c_str(), to.c_str()) == -1)
+    return err.report(capture_errno());
+}
+
+void __create_hard_link(const path& from, const path& to, error_code* ec) {
+  ErrorHandler<void> err("create_hard_link", ec, &from, &to);
+  if (detail::link(from.c_str(), to.c_str()) == -1)
+    return err.report(capture_errno());
+}
+
+void __create_symlink(path const& from, path const& to, error_code* ec) {
+  ErrorHandler<void> err("create_symlink", ec, &from, &to);
+  if (detail::symlink_file(from.c_str(), to.c_str()) == -1)
+    return err.report(capture_errno());
+}
+
+path __current_path(error_code* ec) {
+  ErrorHandler<path> err("current_path", ec);
+
+#if defined(_LIBCPP_WIN32API) || defined(__GLIBC__) || defined(__APPLE__)
+  // Common extension outside of POSIX getcwd() spec, without needing to
+  // preallocate a buffer. Also supported by a number of other POSIX libcs.
+  int size = 0;
+  path::value_type* ptr = nullptr;
+  typedef decltype(&::free) Deleter;
+  Deleter deleter = &::free;
+#else
+  auto size = ::pathconf(".", _PC_PATH_MAX);
+  _LIBCPP_ASSERT(size >= 0, "pathconf returned a 0 as max size");
+
+  auto buff = unique_ptr<path::value_type[]>(new path::value_type[size + 1]);
+  path::value_type* ptr = buff.get();
+
+  // Preallocated buffer, don't free the buffer in the second unique_ptr
+  // below.
+  struct Deleter { void operator()(void*) const {} };
+  Deleter deleter;
+#endif
+
+  unique_ptr<path::value_type, Deleter> hold(detail::getcwd(ptr, size),
+                                             deleter);
+  if (hold.get() == nullptr)
+    return err.report(capture_errno(), "call to getcwd failed");
+
+  return {hold.get()};
+}
+
+void __current_path(const path& p, error_code* ec) {
+  ErrorHandler<void> err("current_path", ec, &p);
+  if (detail::chdir(p.c_str()) == -1)
+    err.report(capture_errno());
+}
+
+bool __equivalent(const path& p1, const path& p2, error_code* ec) {
+  ErrorHandler<bool> err("equivalent", ec, &p1, &p2);
+
+  error_code ec1, ec2;
+  StatT st1 = {}, st2 = {};
+  auto s1 = detail::posix_stat(p1.native(), st1, &ec1);
+  if (!exists(s1))
+    return err.report(errc::not_supported);
+  auto s2 = detail::posix_stat(p2.native(), st2, &ec2);
+  if (!exists(s2))
+    return err.report(errc::not_supported);
+
+  return detail::stat_equivalent(st1, st2);
+}
+
+uintmax_t __file_size(const path& p, error_code* ec) {
+  ErrorHandler<uintmax_t> err("file_size", ec, &p);
+
+  error_code m_ec;
+  StatT st;
+  file_status fst = detail::posix_stat(p, st, &m_ec);
+  if (!exists(fst) || !is_regular_file(fst)) {
+    errc error_kind =
+        is_directory(fst) ? errc::is_a_directory : errc::not_supported;
+    if (!m_ec)
+      m_ec = make_error_code(error_kind);
+    return err.report(m_ec);
+  }
+  // is_regular_file(p) == true
+  return static_cast<uintmax_t>(st.st_size);
+}
+
+uintmax_t __hard_link_count(const path& p, error_code* ec) {
+  ErrorHandler<uintmax_t> err("hard_link_count", ec, &p);
+
+  error_code m_ec;
+  StatT st;
+  detail::posix_stat(p, st, &m_ec);
+  if (m_ec)
+    return err.report(m_ec);
+  return static_cast<uintmax_t>(st.st_nlink);
+}
+
+bool __fs_is_empty(const path& p, error_code* ec) {
+  ErrorHandler<bool> err("is_empty", ec, &p);
+
+  error_code m_ec;
+  StatT pst;
+  auto st = detail::posix_stat(p, pst, &m_ec);
+  if (m_ec)
+    return err.report(m_ec);
+  else if (!is_directory(st) && !is_regular_file(st))
+    return err.report(errc::not_supported);
+  else if (is_directory(st)) {
+    auto it = ec ? directory_iterator(p, *ec) : directory_iterator(p);
+    if (ec && *ec)
+      return false;
+    return it == directory_iterator{};
+  } else if (is_regular_file(st))
+    return static_cast<uintmax_t>(pst.st_size) == 0;
+
+  __libcpp_unreachable();
+}
+
+static file_time_type __extract_last_write_time(const path& p, const StatT& st,
+                                                error_code* ec) {
+  using detail::fs_time;
+  ErrorHandler<file_time_type> err("last_write_time", ec, &p);
+
+  auto ts = detail::extract_mtime(st);
+  if (!fs_time::is_representable(ts))
+    return err.report(errc::value_too_large);
+
+  return fs_time::convert_from_timespec(ts);
+}
+
+file_time_type __last_write_time(const path& p, error_code* ec) {
+  using namespace chrono;
+  ErrorHandler<file_time_type> err("last_write_time", ec, &p);
+
+  error_code m_ec;
+  StatT st;
+  detail::posix_stat(p, st, &m_ec);
+  if (m_ec)
+    return err.report(m_ec);
+  return __extract_last_write_time(p, st, ec);
+}
+
+void __last_write_time(const path& p, file_time_type new_time, error_code* ec) {
+  using detail::fs_time;
+  ErrorHandler<void> err("last_write_time", ec, &p);
+
+#if defined(_LIBCPP_WIN32API)
+  TimeSpec ts;
+  if (!fs_time::convert_to_timespec(ts, new_time))
+    return err.report(errc::value_too_large);
+  detail::WinHandle h(p.c_str(), FILE_WRITE_ATTRIBUTES, 0);
+  if (!h)
+    return err.report(detail::make_windows_error(GetLastError()));
+  FILETIME last_write = timespec_to_filetime(ts);
+  if (!SetFileTime(h, nullptr, nullptr, &last_write))
+    return err.report(detail::make_windows_error(GetLastError()));
+#else
+  error_code m_ec;
+  array<TimeSpec, 2> tbuf;
+#if !defined(_LIBCPP_USE_UTIMENSAT)
+  // This implementation has a race condition between determining the
+  // last access time and attempting to set it to the same value using
+  // ::utimes
+  StatT st;
+  file_status fst = detail::posix_stat(p, st, &m_ec);
+  if (m_ec)
+    return err.report(m_ec);
+  tbuf[0] = detail::extract_atime(st);
+#else
+  tbuf[0].tv_sec = 0;
+  tbuf[0].tv_nsec = UTIME_OMIT;
+#endif
+  if (!fs_time::convert_to_timespec(tbuf[1], new_time))
+    return err.report(errc::value_too_large);
+
+  detail::set_file_times(p, tbuf, m_ec);
+  if (m_ec)
+    return err.report(m_ec);
+#endif
+}
+
+void __permissions(const path& p, perms prms, perm_options opts,
+                   error_code* ec) {
+  ErrorHandler<void> err("permissions", ec, &p);
+
+  auto has_opt = [&](perm_options o) { return bool(o & opts); };
+  const bool resolve_symlinks = !has_opt(perm_options::nofollow);
+  const bool add_perms = has_opt(perm_options::add);
+  const bool remove_perms = has_opt(perm_options::remove);
+  _LIBCPP_ASSERT(
+      (add_perms + remove_perms + has_opt(perm_options::replace)) == 1,
+      "One and only one of the perm_options constants replace, add, or remove "
+      "is present in opts");
+
+  bool set_sym_perms = false;
+  prms &= perms::mask;
+  if (!resolve_symlinks || (add_perms || remove_perms)) {
+    error_code m_ec;
+    file_status st = resolve_symlinks ? detail::posix_stat(p, &m_ec)
+                                      : detail::posix_lstat(p, &m_ec);
+    set_sym_perms = is_symlink(st);
+    if (m_ec)
+      return err.report(m_ec);
+    _LIBCPP_ASSERT(st.permissions() != perms::unknown,
+                   "Permissions unexpectedly unknown");
+    if (add_perms)
+      prms |= st.permissions();
+    else if (remove_perms)
+      prms = st.permissions() & ~prms;
+  }
+  const auto real_perms = static_cast<detail::ModeT>(prms & perms::mask);
+
+#if defined(AT_SYMLINK_NOFOLLOW) && defined(AT_FDCWD)
+  const int flags = set_sym_perms ? AT_SYMLINK_NOFOLLOW : 0;
+  if (detail::fchmodat(AT_FDCWD, p.c_str(), real_perms, flags) == -1) {
+    return err.report(capture_errno());
+  }
+#else
+  if (set_sym_perms)
+    return err.report(errc::operation_not_supported);
+  if (::chmod(p.c_str(), real_perms) == -1) {
+    return err.report(capture_errno());
+  }
+#endif
+}
+
+path __read_symlink(const path& p, error_code* ec) {
+  ErrorHandler<path> err("read_symlink", ec, &p);
+
+#if defined(PATH_MAX) || defined(MAX_SYMLINK_SIZE)
+  struct NullDeleter { void operator()(void*) const {} };
+#ifdef MAX_SYMLINK_SIZE
+  const size_t size = MAX_SYMLINK_SIZE + 1;
+#else
+  const size_t size = PATH_MAX + 1;
+#endif
+  path::value_type stack_buff[size];
+  auto buff = std::unique_ptr<path::value_type[], NullDeleter>(stack_buff);
+#else
+  StatT sb;
+  if (detail::lstat(p.c_str(), &sb) == -1) {
+    return err.report(capture_errno());
+  }
+  const size_t size = sb.st_size + 1;
+  auto buff = unique_ptr<path::value_type[]>(new path::value_type[size]);
+#endif
+  detail::SSizeT ret;
+  if ((ret = detail::readlink(p.c_str(), buff.get(), size)) == -1)
+    return err.report(capture_errno());
+  _LIBCPP_ASSERT(ret > 0, "TODO");
+  if (static_cast<size_t>(ret) >= size)
+    return err.report(errc::value_too_large);
+  buff[ret] = 0;
+  return {buff.get()};
+}
+
+bool __remove(const path& p, error_code* ec) {
+  ErrorHandler<bool> err("remove", ec, &p);
+  if (detail::remove(p.c_str()) == -1) {
+    if (errno != ENOENT)
+      err.report(capture_errno());
+    return false;
+  }
+  return true;
+}
+
+// We currently have two implementations of `__remove_all`. The first one is general and
+// used on platforms where we don't have access to the `openat()` family of POSIX functions.
+// That implementation uses `directory_iterator`, however it is vulnerable to some race
+// conditions, see https://reviews.llvm.org/D118134 for details.
+//
+// The second implementation is used on platforms where `openat()` & friends are available,
+// and it threads file descriptors through recursive calls to avoid such race conditions.
+#if defined(_LIBCPP_WIN32API) || defined (__MVS__)
+# define REMOVE_ALL_USE_DIRECTORY_ITERATOR
+#endif
+
+#if defined(REMOVE_ALL_USE_DIRECTORY_ITERATOR)
+
+namespace {
+
+uintmax_t remove_all_impl(path const& p, error_code& ec) {
+  const auto npos = static_cast<uintmax_t>(-1);
+  const file_status st = __symlink_status(p, &ec);
+  if (ec)
+    return npos;
+  uintmax_t count = 1;
+  if (is_directory(st)) {
+    for (directory_iterator it(p, ec); !ec && it != directory_iterator();
+         it.increment(ec)) {
+      auto other_count = remove_all_impl(it->path(), ec);
+      if (ec)
+        return npos;
+      count += other_count;
+    }
+    if (ec)
+      return npos;
+  }
+  if (!__remove(p, &ec))
+    return npos;
+  return count;
+}
+
+} // end namespace
+
+uintmax_t __remove_all(const path& p, error_code* ec) {
+  ErrorHandler<uintmax_t> err("remove_all", ec, &p);
+
+  error_code mec;
+  auto count = remove_all_impl(p, mec);
+  if (mec) {
+    if (mec == errc::no_such_file_or_directory)
+      return 0;
+    return err.report(mec);
+  }
+  return count;
+}
+
+#else // !REMOVE_ALL_USE_DIRECTORY_ITERATOR
+
+namespace {
+
+template <class Cleanup>
+struct scope_exit {
+  explicit scope_exit(Cleanup const& cleanup)
+    : cleanup_(cleanup)
+  { }
+
+  ~scope_exit() { cleanup_(); }
+
+private:
+  Cleanup cleanup_;
+};
+_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(scope_exit);
+
+uintmax_t remove_all_impl(int parent_directory, const path& p, error_code& ec) {
+  // First, try to open the path as a directory.
+  const int options = O_CLOEXEC | O_RDONLY | O_DIRECTORY | O_NOFOLLOW;
+  int fd = ::openat(parent_directory, p.c_str(), options);
+  if (fd != -1) {
+    // If that worked, iterate over the contents of the directory and
+    // remove everything in it, recursively.
+    DIR* stream = ::fdopendir(fd);
+    if (stream == nullptr) {
+      ::close(fd);
+      ec = detail::capture_errno();
+      return 0;
+    }
+    // Note: `::closedir` will also close the associated file descriptor, so
+    // there should be no call to `close(fd)`.
+    scope_exit close_stream([=] { ::closedir(stream); });
+
+    uintmax_t count = 0;
+    while (true) {
+      auto [str, type] = detail::posix_readdir(stream, ec);
+      static_assert(std::is_same_v<decltype(str), std::string_view>);
+      if (str == "." || str == "..") {
+        continue;
+      } else if (ec || str.empty()) {
+        break; // we're done iterating through the directory
+      } else {
+        count += remove_all_impl(fd, str, ec);
+      }
+    }
+
+    // Then, remove the now-empty directory itself.
+    if (::unlinkat(parent_directory, p.c_str(), AT_REMOVEDIR) == -1) {
+      ec = detail::capture_errno();
+      return count;
+    }
+
+    return count + 1; // the contents of the directory + the directory itself
+  }
+
+  ec = detail::capture_errno();
+
+  // If we failed to open `p` because it didn't exist, it's not an
+  // error -- it might have moved or have been deleted already.
+  if (ec == errc::no_such_file_or_directory) {
+    ec.clear();
+    return 0;
+  }
+
+  // If opening `p` failed because it wasn't a directory, remove it as
+  // a normal file instead. Note that `openat()` can return either ENOTDIR
+  // or ELOOP depending on the exact reason of the failure.
+  if (ec == errc::not_a_directory || ec == errc::too_many_symbolic_link_levels) {
+    ec.clear();
+    if (::unlinkat(parent_directory, p.c_str(), /* flags = */0) == -1) {
+      ec = detail::capture_errno();
+      return 0;
+    }
+    return 1;
+  }
+
+  // Otherwise, it's a real error -- we don't remove anything.
+  return 0;
+}
+
+} // end namespace
+
+uintmax_t __remove_all(const path& p, error_code* ec) {
+  ErrorHandler<uintmax_t> err("remove_all", ec, &p);
+  error_code mec;
+  uintmax_t count = remove_all_impl(AT_FDCWD, p, mec);
+  if (mec)
+    return err.report(mec);
+  return count;
+}
+
+#endif // REMOVE_ALL_USE_DIRECTORY_ITERATOR
+
+void __rename(const path& from, const path& to, error_code* ec) {
+  ErrorHandler<void> err("rename", ec, &from, &to);
+  if (detail::rename(from.c_str(), to.c_str()) == -1)
+    err.report(capture_errno());
+}
+
+void __resize_file(const path& p, uintmax_t size, error_code* ec) {
+  ErrorHandler<void> err("resize_file", ec, &p);
+  if (detail::truncate(p.c_str(), static_cast< ::off_t>(size)) == -1)
+    return err.report(capture_errno());
+}
+
+space_info __space(const path& p, error_code* ec) {
+  ErrorHandler<void> err("space", ec, &p);
+  space_info si;
+  detail::StatVFS m_svfs = {};
+  if (detail::statvfs(p.c_str(), &m_svfs) == -1) {
+    err.report(capture_errno());
+    si.capacity = si.free = si.available = static_cast<uintmax_t>(-1);
+    return si;
+  }
+  // Multiply with overflow checking.
+  auto do_mult = [&](uintmax_t& out, uintmax_t other) {
+    out = other * m_svfs.f_frsize;
+    if (other == 0 || out / other != m_svfs.f_frsize)
+      out = static_cast<uintmax_t>(-1);
+  };
+  do_mult(si.capacity, m_svfs.f_blocks);
+  do_mult(si.free, m_svfs.f_bfree);
+  do_mult(si.available, m_svfs.f_bavail);
+  return si;
+}
+
+file_status __status(const path& p, error_code* ec) {
+  return detail::posix_stat(p, ec);
+}
+
+file_status __symlink_status(const path& p, error_code* ec) {
+  return detail::posix_lstat(p, ec);
+}
+
+path __temp_directory_path(error_code* ec) {
+  ErrorHandler<path> err("temp_directory_path", ec);
+
+#if defined(_LIBCPP_WIN32API)
+  wchar_t buf[MAX_PATH];
+  DWORD retval = GetTempPathW(MAX_PATH, buf);
+  if (!retval)
+    return err.report(detail::make_windows_error(GetLastError()));
+  if (retval > MAX_PATH)
+    return err.report(errc::filename_too_long);
+  // GetTempPathW returns a path with a trailing slash, which we
+  // shouldn't include for consistency.
+  if (buf[retval-1] == L'\\')
+    buf[retval-1] = L'\0';
+  path p(buf);
+#else
+  const char* env_paths[] = {"TMPDIR", "TMP", "TEMP", "TEMPDIR"};
+  const char* ret = nullptr;
+
+  for (auto& ep : env_paths)
+    if ((ret = getenv(ep)))
+      break;
+  if (ret == nullptr) {
+#if defined(__ANDROID__)
+    ret = "/data/local/tmp";
+#else
+    ret = "/tmp";
+#endif
+  }
+
+  path p(ret);
+#endif
+  error_code m_ec;
+  file_status st = detail::posix_stat(p, &m_ec);
+  if (!status_known(st))
+    return err.report(m_ec, "cannot access path " PATH_CSTR_FMT, p.c_str());
+
+  if (!exists(st) || !is_directory(st))
+    return err.report(errc::not_a_directory,
+                      "path " PATH_CSTR_FMT " is not a directory", p.c_str());
+
+  return p;
+}
+
+path __weakly_canonical(const path& p, error_code* ec) {
+  ErrorHandler<path> err("weakly_canonical", ec, &p);
+
+  if (p.empty())
+    return __canonical("", ec);
+
+  path result;
+  path tmp;
+  tmp.__reserve(p.native().size());
+  auto PP = PathParser::CreateEnd(p.native());
+  --PP;
+  vector<string_view_t> DNEParts;
+
+  while (PP.State != PathParser::PS_BeforeBegin) {
+    tmp.assign(createView(p.native().data(), &PP.RawEntry.back()));
+    error_code m_ec;
+    file_status st = __status(tmp, &m_ec);
+    if (!status_known(st)) {
+      return err.report(m_ec);
+    } else if (exists(st)) {
+      result = __canonical(tmp, ec);
+      break;
+    }
+    DNEParts.push_back(*PP);
+    --PP;
+  }
+  if (PP.State == PathParser::PS_BeforeBegin)
+    result = __canonical("", ec);
+  if (ec)
+    ec->clear();
+  if (DNEParts.empty())
+    return result;
+  for (auto It = DNEParts.rbegin(); It != DNEParts.rend(); ++It)
+    result /= *It;
+  return result.lexically_normal();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+//                            path definitions
+///////////////////////////////////////////////////////////////////////////////
+
+constexpr path::value_type path::preferred_separator;
+
+path& path::replace_extension(path const& replacement) {
+  path p = extension();
+  if (not p.empty()) {
+    __pn_.erase(__pn_.size() - p.native().size());
+  }
+  if (!replacement.empty()) {
+    if (replacement.native()[0] != '.') {
+      __pn_ += PATHSTR(".");
+    }
+    __pn_.append(replacement.__pn_);
+  }
+  return *this;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// path.decompose
+
+string_view_t path::__root_name() const {
+  auto PP = PathParser::CreateBegin(__pn_);
+  if (PP.State == PathParser::PS_InRootName)
+    return *PP;
+  return {};
+}
+
+string_view_t path::__root_directory() const {
+  auto PP = PathParser::CreateBegin(__pn_);
+  if (PP.State == PathParser::PS_InRootName)
+    ++PP;
+  if (PP.State == PathParser::PS_InRootDir)
+    return *PP;
+  return {};
+}
+
+string_view_t path::__root_path_raw() const {
+  auto PP = PathParser::CreateBegin(__pn_);
+  if (PP.State == PathParser::PS_InRootName) {
+    auto NextCh = PP.peek();
+    if (NextCh && isSeparator(*NextCh)) {
+      ++PP;
+      return createView(__pn_.data(), &PP.RawEntry.back());
+    }
+    return PP.RawEntry;
+  }
+  if (PP.State == PathParser::PS_InRootDir)
+    return *PP;
+  return {};
+}
+
+static bool ConsumeRootName(PathParser *PP) {
+  static_assert(PathParser::PS_BeforeBegin == 1 &&
+      PathParser::PS_InRootName == 2,
+      "Values for enums are incorrect");
+  while (PP->State <= PathParser::PS_InRootName)
+    ++(*PP);
+  return PP->State == PathParser::PS_AtEnd;
+}
+
+static bool ConsumeRootDir(PathParser* PP) {
+  static_assert(PathParser::PS_BeforeBegin == 1 &&
+                PathParser::PS_InRootName == 2 &&
+                PathParser::PS_InRootDir == 3, "Values for enums are incorrect");
+  while (PP->State <= PathParser::PS_InRootDir)
+    ++(*PP);
+  return PP->State == PathParser::PS_AtEnd;
+}
+
+string_view_t path::__relative_path() const {
+  auto PP = PathParser::CreateBegin(__pn_);
+  if (ConsumeRootDir(&PP))
+    return {};
+  return createView(PP.RawEntry.data(), &__pn_.back());
+}
+
+string_view_t path::__parent_path() const {
+  if (empty())
+    return {};
+  // Determine if we have a root path but not a relative path. In that case
+  // return *this.
+  {
+    auto PP = PathParser::CreateBegin(__pn_);
+    if (ConsumeRootDir(&PP))
+      return __pn_;
+  }
+  // Otherwise remove a single element from the end of the path, and return
+  // a string representing that path
+  {
+    auto PP = PathParser::CreateEnd(__pn_);
+    --PP;
+    if (PP.RawEntry.data() == __pn_.data())
+      return {};
+    --PP;
+    return createView(__pn_.data(), &PP.RawEntry.back());
+  }
+}
+
+string_view_t path::__filename() const {
+  if (empty())
+    return {};
+  {
+    PathParser PP = PathParser::CreateBegin(__pn_);
+    if (ConsumeRootDir(&PP))
+      return {};
+  }
+  return *(--PathParser::CreateEnd(__pn_));
+}
+
+string_view_t path::__stem() const {
+  return parser::separate_filename(__filename()).first;
+}
+
+string_view_t path::__extension() const {
+  return parser::separate_filename(__filename()).second;
+}
+
+////////////////////////////////////////////////////////////////////////////
+// path.gen
+
+enum PathPartKind : unsigned char {
+  PK_None,
+  PK_RootSep,
+  PK_Filename,
+  PK_Dot,
+  PK_DotDot,
+  PK_TrailingSep
+};
+
+static PathPartKind ClassifyPathPart(string_view_t Part) {
+  if (Part.empty())
+    return PK_TrailingSep;
+  if (Part == PATHSTR("."))
+    return PK_Dot;
+  if (Part == PATHSTR(".."))
+    return PK_DotDot;
+  if (Part == PATHSTR("/"))
+    return PK_RootSep;
+#if defined(_LIBCPP_WIN32API)
+  if (Part == PATHSTR("\\"))
+    return PK_RootSep;
+#endif
+  return PK_Filename;
+}
+
+path path::lexically_normal() const {
+  if (__pn_.empty())
+    return *this;
+
+  using PartKindPair = pair<string_view_t, PathPartKind>;
+  vector<PartKindPair> Parts;
+  // Guess as to how many elements the path has to avoid reallocating.
+  Parts.reserve(32);
+
+  // Track the total size of the parts as we collect them. This allows the
+  // resulting path to reserve the correct amount of memory.
+  size_t NewPathSize = 0;
+  auto AddPart = [&](PathPartKind K, string_view_t P) {
+    NewPathSize += P.size();
+    Parts.emplace_back(P, K);
+  };
+  auto LastPartKind = [&]() {
+    if (Parts.empty())
+      return PK_None;
+    return Parts.back().second;
+  };
+
+  bool MaybeNeedTrailingSep = false;
+  // Build a stack containing the remaining elements of the path, popping off
+  // elements which occur before a '..' entry.
+  for (auto PP = PathParser::CreateBegin(__pn_); PP; ++PP) {
+    auto Part = *PP;
+    PathPartKind Kind = ClassifyPathPart(Part);
+    switch (Kind) {
+    case PK_Filename:
+    case PK_RootSep: {
+      // Add all non-dot and non-dot-dot elements to the stack of elements.
+      AddPart(Kind, Part);
+      MaybeNeedTrailingSep = false;
+      break;
+    }
+    case PK_DotDot: {
+      // Only push a ".." element if there are no elements preceding the "..",
+      // or if the preceding element is itself "..".
+      auto LastKind = LastPartKind();
+      if (LastKind == PK_Filename) {
+        NewPathSize -= Parts.back().first.size();
+        Parts.pop_back();
+      } else if (LastKind != PK_RootSep)
+        AddPart(PK_DotDot, PATHSTR(".."));
+      MaybeNeedTrailingSep = LastKind == PK_Filename;
+      break;
+    }
+    case PK_Dot:
+    case PK_TrailingSep: {
+      MaybeNeedTrailingSep = true;
+      break;
+    }
+    case PK_None:
+      __libcpp_unreachable();
+    }
+  }
+  // [fs.path.generic]p6.8: If the path is empty, add a dot.
+  if (Parts.empty())
+    return PATHSTR(".");
+
+  // [fs.path.generic]p6.7: If the last filename is dot-dot, remove any
+  // trailing directory-separator.
+  bool NeedTrailingSep = MaybeNeedTrailingSep && LastPartKind() == PK_Filename;
+
+  path Result;
+  Result.__pn_.reserve(Parts.size() + NewPathSize + NeedTrailingSep);
+  for (auto& PK : Parts)
+    Result /= PK.first;
+
+  if (NeedTrailingSep)
+    Result /= PATHSTR("");
+
+  Result.make_preferred();
+  return Result;
+}
+
+static int DetermineLexicalElementCount(PathParser PP) {
+  int Count = 0;
+  for (; PP; ++PP) {
+    auto Elem = *PP;
+    if (Elem == PATHSTR(".."))
+      --Count;
+    else if (Elem != PATHSTR(".") && Elem != PATHSTR(""))
+      ++Count;
+  }
+  return Count;
+}
+
+path path::lexically_relative(const path& base) const {
+  { // perform root-name/root-directory mismatch checks
+    auto PP = PathParser::CreateBegin(__pn_);
+    auto PPBase = PathParser::CreateBegin(base.__pn_);
+    auto CheckIterMismatchAtBase = [&]() {
+      return PP.State != PPBase.State &&
+             (PP.inRootPath() || PPBase.inRootPath());
+    };
+    if (PP.inRootName() && PPBase.inRootName()) {
+      if (*PP != *PPBase)
+        return {};
+    } else if (CheckIterMismatchAtBase())
+      return {};
+
+    if (PP.inRootPath())
+      ++PP;
+    if (PPBase.inRootPath())
+      ++PPBase;
+    if (CheckIterMismatchAtBase())
+      return {};
+  }
+
+  // Find the first mismatching element
+  auto PP = PathParser::CreateBegin(__pn_);
+  auto PPBase = PathParser::CreateBegin(base.__pn_);
+  while (PP && PPBase && PP.State == PPBase.State && *PP == *PPBase) {
+    ++PP;
+    ++PPBase;
+  }
+
+  // If there is no mismatch, return ".".
+  if (!PP && !PPBase)
+    return ".";
+
+  // Otherwise, determine the number of elements, 'n', which are not dot or
+  // dot-dot minus the number of dot-dot elements.
+  int ElemCount = DetermineLexicalElementCount(PPBase);
+  if (ElemCount < 0)
+    return {};
+
+  // if n == 0 and (a == end() || a->empty()), returns path("."); otherwise
+  if (ElemCount == 0 && (PP.atEnd() || *PP == PATHSTR("")))
+    return PATHSTR(".");
+
+  // return a path constructed with 'n' dot-dot elements, followed by the
+  // elements of '*this' after the mismatch.
+  path Result;
+  // FIXME: Reserve enough room in Result that it won't have to re-allocate.
+  while (ElemCount--)
+    Result /= PATHSTR("..");
+  for (; PP; ++PP)
+    Result /= *PP;
+  return Result;
+}
+
+////////////////////////////////////////////////////////////////////////////
+// path.comparisons
+static int CompareRootName(PathParser *LHS, PathParser *RHS) {
+  if (!LHS->inRootName() && !RHS->inRootName())
+    return 0;
+
+  auto GetRootName = [](PathParser *Parser) -> string_view_t {
+    return Parser->inRootName() ? **Parser : PATHSTR("");
+  };
+  int res = GetRootName(LHS).compare(GetRootName(RHS));
+  ConsumeRootName(LHS);
+  ConsumeRootName(RHS);
+  return res;
+}
+
+static int CompareRootDir(PathParser *LHS, PathParser *RHS) {
+  if (!LHS->inRootDir() && RHS->inRootDir())
+    return -1;
+  else if (LHS->inRootDir() && !RHS->inRootDir())
+    return 1;
+  else {
+    ConsumeRootDir(LHS);
+    ConsumeRootDir(RHS);
+    return 0;
+  }
+}
+
+static int CompareRelative(PathParser *LHSPtr, PathParser *RHSPtr) {
+  auto &LHS = *LHSPtr;
+  auto &RHS = *RHSPtr;
+
+  int res;
+  while (LHS && RHS) {
+    if ((res = (*LHS).compare(*RHS)) != 0)
+      return res;
+    ++LHS;
+    ++RHS;
+  }
+  return 0;
+}
+
+static int CompareEndState(PathParser *LHS, PathParser *RHS) {
+  if (LHS->atEnd() && !RHS->atEnd())
+    return -1;
+  else if (!LHS->atEnd() && RHS->atEnd())
+    return 1;
+  return 0;
+}
+
+int path::__compare(string_view_t __s) const {
+  auto LHS = PathParser::CreateBegin(__pn_);
+  auto RHS = PathParser::CreateBegin(__s);
+  int res;
+
+  if ((res = CompareRootName(&LHS, &RHS)) != 0)
+    return res;
+
+  if ((res = CompareRootDir(&LHS, &RHS)) != 0)
+    return res;
+
+  if ((res = CompareRelative(&LHS, &RHS)) != 0)
+    return res;
+
+  return CompareEndState(&LHS, &RHS);
+}
+
+////////////////////////////////////////////////////////////////////////////
+// path.nonmembers
+size_t hash_value(const path& __p) noexcept {
+  auto PP = PathParser::CreateBegin(__p.native());
+  size_t hash_value = 0;
+  hash<string_view_t> hasher;
+  while (PP) {
+    hash_value = __hash_combine(hash_value, hasher(*PP));
+    ++PP;
+  }
+  return hash_value;
+}
+
+////////////////////////////////////////////////////////////////////////////
+// path.itr
+path::iterator path::begin() const {
+  auto PP = PathParser::CreateBegin(__pn_);
+  iterator it;
+  it.__path_ptr_ = this;
+  it.__state_ = static_cast<path::iterator::_ParserState>(PP.State);
+  it.__entry_ = PP.RawEntry;
+  it.__stashed_elem_.__assign_view(*PP);
+  return it;
+}
+
+path::iterator path::end() const {
+  iterator it{};
+  it.__state_ = path::iterator::_AtEnd;
+  it.__path_ptr_ = this;
+  return it;
+}
+
+path::iterator& path::iterator::__increment() {
+  PathParser PP(__path_ptr_->native(), __entry_, __state_);
+  ++PP;
+  __state_ = static_cast<_ParserState>(PP.State);
+  __entry_ = PP.RawEntry;
+  __stashed_elem_.__assign_view(*PP);
+  return *this;
+}
+
+path::iterator& path::iterator::__decrement() {
+  PathParser PP(__path_ptr_->native(), __entry_, __state_);
+  --PP;
+  __state_ = static_cast<_ParserState>(PP.State);
+  __entry_ = PP.RawEntry;
+  __stashed_elem_.__assign_view(*PP);
+  return *this;
+}
+
+#if defined(_LIBCPP_WIN32API)
+////////////////////////////////////////////////////////////////////////////
+// Windows path conversions
+size_t __wide_to_char(const wstring &str, char *out, size_t outlen) {
+  if (str.empty())
+    return 0;
+  ErrorHandler<size_t> err("__wide_to_char", nullptr);
+  UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+  BOOL used_default = FALSE;
+  int ret = WideCharToMultiByte(codepage, 0, str.data(), str.size(), out,
+                                outlen, nullptr, &used_default);
+  if (ret <= 0 || used_default)
+    return err.report(errc::illegal_byte_sequence);
+  return ret;
+}
+
+size_t __char_to_wide(const string &str, wchar_t *out, size_t outlen) {
+  if (str.empty())
+    return 0;
+  ErrorHandler<size_t> err("__char_to_wide", nullptr);
+  UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+  int ret = MultiByteToWideChar(codepage, MB_ERR_INVALID_CHARS, str.data(),
+                                str.size(), out, outlen);
+  if (ret <= 0)
+    return err.report(errc::illegal_byte_sequence);
+  return ret;
+}
+#endif
+
+
+///////////////////////////////////////////////////////////////////////////////
+//                           directory entry definitions
+///////////////////////////////////////////////////////////////////////////////
+
+error_code directory_entry::__do_refresh() noexcept {
+  __data_.__reset();
+  error_code failure_ec;
+
+  StatT full_st;
+  file_status st = detail::posix_lstat(__p_, full_st, &failure_ec);
+  if (!status_known(st)) {
+    __data_.__reset();
+    return failure_ec;
+  }
+
+  if (!_VSTD_FS::exists(st) || !_VSTD_FS::is_symlink(st)) {
+    __data_.__cache_type_ = directory_entry::_RefreshNonSymlink;
+    __data_.__type_ = st.type();
+    __data_.__non_sym_perms_ = st.permissions();
+  } else { // we have a symlink
+    __data_.__sym_perms_ = st.permissions();
+    // Get the information about the linked entity.
+    // Ignore errors from stat, since we don't want errors regarding symlink
+    // resolution to be reported to the user.
+    error_code ignored_ec;
+    st = detail::posix_stat(__p_, full_st, &ignored_ec);
+
+    __data_.__type_ = st.type();
+    __data_.__non_sym_perms_ = st.permissions();
+
+    // If we failed to resolve the link, then only partially populate the
+    // cache.
+    if (!status_known(st)) {
+      __data_.__cache_type_ = directory_entry::_RefreshSymlinkUnresolved;
+      return error_code{};
+    }
+    // Otherwise, we resolved the link, potentially as not existing.
+    // That's OK.
+    __data_.__cache_type_ = directory_entry::_RefreshSymlink;
+  }
+
+  if (_VSTD_FS::is_regular_file(st))
+    __data_.__size_ = static_cast<uintmax_t>(full_st.st_size);
+
+  if (_VSTD_FS::exists(st)) {
+    __data_.__nlink_ = static_cast<uintmax_t>(full_st.st_nlink);
+
+    // Attempt to extract the mtime, and fail if it's not representable using
+    // file_time_type. For now we ignore the error, as we'll report it when
+    // the value is actually used.
+    error_code ignored_ec;
+    __data_.__write_time_ =
+        __extract_last_write_time(__p_, full_st, &ignored_ec);
+  }
+
+  return failure_ec;
+}
+
+_LIBCPP_END_NAMESPACE_FILESYSTEM
diff --git a/app/src/main/cpp/libcxx/src/filesystem/posix_compat.h b/app/src/main/cpp/libcxx/src/filesystem/posix_compat.h
new file mode 100644
index 0000000..36116ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/filesystem/posix_compat.h
@@ -0,0 +1,522 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+//
+// POSIX-like portability helper functions.
+//
+// These generally behave like the proper posix functions, with these
+// exceptions:
+// On Windows, they take paths in wchar_t* form, instead of char* form.
+// The symlink() function is split into two frontends, symlink_file()
+// and symlink_dir().
+//
+// These are provided within an anonymous namespace within the detail
+// namespace - callers need to include this header and call them as
+// detail::function(), regardless of platform.
+//
+
+#ifndef POSIX_COMPAT_H
+#define POSIX_COMPAT_H
+
+#include <__assert>
+#include <filesystem>
+
+#include "filesystem_common.h"
+
+#if defined(_LIBCPP_WIN32API)
+# define WIN32_LEAN_AND_MEAN
+# define NOMINMAX
+# include <windows.h>
+# include <io.h>
+# include <winioctl.h>
+#else
+# include <unistd.h>
+# include <sys/stat.h>
+# include <sys/statvfs.h>
+#endif
+#include <time.h>
+
+#if defined(_LIBCPP_WIN32API)
+// This struct isn't defined in the normal Windows SDK, but only in the
+// Windows Driver Kit.
+struct LIBCPP_REPARSE_DATA_BUFFER {
+  unsigned long  ReparseTag;
+  unsigned short ReparseDataLength;
+  unsigned short Reserved;
+  union {
+    struct {
+      unsigned short SubstituteNameOffset;
+      unsigned short SubstituteNameLength;
+      unsigned short PrintNameOffset;
+      unsigned short PrintNameLength;
+      unsigned long  Flags;
+      wchar_t        PathBuffer[1];
+    } SymbolicLinkReparseBuffer;
+    struct {
+      unsigned short SubstituteNameOffset;
+      unsigned short SubstituteNameLength;
+      unsigned short PrintNameOffset;
+      unsigned short PrintNameLength;
+      wchar_t        PathBuffer[1];
+    } MountPointReparseBuffer;
+    struct {
+      unsigned char DataBuffer[1];
+    } GenericReparseBuffer;
+  };
+};
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
+
+namespace detail {
+namespace {
+
+#if defined(_LIBCPP_WIN32API)
+
+// Various C runtime header sets provide more or less of these. As we
+// provide our own implementation, undef all potential defines from the
+// C runtime headers and provide a complete set of macros of our own.
+
+#undef _S_IFMT
+#undef _S_IFDIR
+#undef _S_IFCHR
+#undef _S_IFIFO
+#undef _S_IFREG
+#undef _S_IFBLK
+#undef _S_IFLNK
+#undef _S_IFSOCK
+
+#define _S_IFMT   0xF000
+#define _S_IFDIR  0x4000
+#define _S_IFCHR  0x2000
+#define _S_IFIFO  0x1000
+#define _S_IFREG  0x8000
+#define _S_IFBLK  0x6000
+#define _S_IFLNK  0xA000
+#define _S_IFSOCK 0xC000
+
+#undef S_ISDIR
+#undef S_ISFIFO
+#undef S_ISCHR
+#undef S_ISREG
+#undef S_ISLNK
+#undef S_ISBLK
+#undef S_ISSOCK
+
+#define S_ISDIR(m)      (((m) & _S_IFMT) == _S_IFDIR)
+#define S_ISCHR(m)      (((m) & _S_IFMT) == _S_IFCHR)
+#define S_ISFIFO(m)     (((m) & _S_IFMT) == _S_IFIFO)
+#define S_ISREG(m)      (((m) & _S_IFMT) == _S_IFREG)
+#define S_ISBLK(m)      (((m) & _S_IFMT) == _S_IFBLK)
+#define S_ISLNK(m)      (((m) & _S_IFMT) == _S_IFLNK)
+#define S_ISSOCK(m)     (((m) & _S_IFMT) == _S_IFSOCK)
+
+#define O_NONBLOCK 0
+
+
+// There were 369 years and 89 leap days from the Windows epoch
+// (1601) to the Unix epoch (1970).
+#define FILE_TIME_OFFSET_SECS (uint64_t(369 * 365 + 89) * (24 * 60 * 60))
+
+TimeSpec filetime_to_timespec(LARGE_INTEGER li) {
+  TimeSpec ret;
+  ret.tv_sec = li.QuadPart / 10000000 - FILE_TIME_OFFSET_SECS;
+  ret.tv_nsec = (li.QuadPart % 10000000) * 100;
+  return ret;
+}
+
+TimeSpec filetime_to_timespec(FILETIME ft) {
+  LARGE_INTEGER li;
+  li.LowPart = ft.dwLowDateTime;
+  li.HighPart = ft.dwHighDateTime;
+  return filetime_to_timespec(li);
+}
+
+FILETIME timespec_to_filetime(TimeSpec ts) {
+  LARGE_INTEGER li;
+  li.QuadPart =
+      ts.tv_nsec / 100 + (ts.tv_sec + FILE_TIME_OFFSET_SECS) * 10000000;
+  FILETIME ft;
+  ft.dwLowDateTime = li.LowPart;
+  ft.dwHighDateTime = li.HighPart;
+  return ft;
+}
+
+int set_errno(int e = GetLastError()) {
+  errno = static_cast<int>(__win_err_to_errc(e));
+  return -1;
+}
+
+class WinHandle {
+public:
+  WinHandle(const wchar_t *p, DWORD access, DWORD flags) {
+    h = CreateFileW(
+        p, access, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+        nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | flags, nullptr);
+  }
+  ~WinHandle() {
+    if (h != INVALID_HANDLE_VALUE)
+      CloseHandle(h);
+  }
+  operator HANDLE() const { return h; }
+  operator bool() const { return h != INVALID_HANDLE_VALUE; }
+
+private:
+  HANDLE h;
+};
+
+int stat_handle(HANDLE h, StatT *buf) {
+  FILE_BASIC_INFO basic;
+  if (!GetFileInformationByHandleEx(h, FileBasicInfo, &basic, sizeof(basic)))
+    return set_errno();
+  memset(buf, 0, sizeof(*buf));
+  buf->st_mtim = filetime_to_timespec(basic.LastWriteTime);
+  buf->st_atim = filetime_to_timespec(basic.LastAccessTime);
+  buf->st_mode = 0555; // Read-only
+  if (!(basic.FileAttributes & FILE_ATTRIBUTE_READONLY))
+    buf->st_mode |= 0222; // Write
+  if (basic.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
+    buf->st_mode |= _S_IFDIR;
+  } else {
+    buf->st_mode |= _S_IFREG;
+  }
+  if (basic.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+    FILE_ATTRIBUTE_TAG_INFO tag;
+    if (!GetFileInformationByHandleEx(h, FileAttributeTagInfo, &tag,
+                                      sizeof(tag)))
+      return set_errno();
+    if (tag.ReparseTag == IO_REPARSE_TAG_SYMLINK)
+      buf->st_mode = (buf->st_mode & ~_S_IFMT) | _S_IFLNK;
+  }
+  FILE_STANDARD_INFO standard;
+  if (!GetFileInformationByHandleEx(h, FileStandardInfo, &standard,
+                                    sizeof(standard)))
+    return set_errno();
+  buf->st_nlink = standard.NumberOfLinks;
+  buf->st_size = standard.EndOfFile.QuadPart;
+  BY_HANDLE_FILE_INFORMATION info;
+  if (!GetFileInformationByHandle(h, &info))
+    return set_errno();
+  buf->st_dev = info.dwVolumeSerialNumber;
+  memcpy(&buf->st_ino.id[0], &info.nFileIndexHigh, 4);
+  memcpy(&buf->st_ino.id[4], &info.nFileIndexLow, 4);
+  return 0;
+}
+
+int stat_file(const wchar_t *path, StatT *buf, DWORD flags) {
+  WinHandle h(path, FILE_READ_ATTRIBUTES, flags);
+  if (!h)
+    return set_errno();
+  int ret = stat_handle(h, buf);
+  return ret;
+}
+
+int stat(const wchar_t *path, StatT *buf) { return stat_file(path, buf, 0); }
+
+int lstat(const wchar_t *path, StatT *buf) {
+  return stat_file(path, buf, FILE_FLAG_OPEN_REPARSE_POINT);
+}
+
+int fstat(int fd, StatT *buf) {
+  HANDLE h = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
+  return stat_handle(h, buf);
+}
+
+int mkdir(const wchar_t *path, int permissions) {
+  (void)permissions;
+  return _wmkdir(path);
+}
+
+int symlink_file_dir(const wchar_t *oldname, const wchar_t *newname,
+                     bool is_dir) {
+  path dest(oldname);
+  dest.make_preferred();
+  oldname = dest.c_str();
+  DWORD flags = is_dir ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0;
+  if (CreateSymbolicLinkW(newname, oldname,
+                          flags | SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE))
+    return 0;
+  int e = GetLastError();
+  if (e != ERROR_INVALID_PARAMETER)
+    return set_errno(e);
+  if (CreateSymbolicLinkW(newname, oldname, flags))
+    return 0;
+  return set_errno();
+}
+
+int symlink_file(const wchar_t *oldname, const wchar_t *newname) {
+  return symlink_file_dir(oldname, newname, false);
+}
+
+int symlink_dir(const wchar_t *oldname, const wchar_t *newname) {
+  return symlink_file_dir(oldname, newname, true);
+}
+
+int link(const wchar_t *oldname, const wchar_t *newname) {
+  if (CreateHardLinkW(newname, oldname, nullptr))
+    return 0;
+  return set_errno();
+}
+
+int remove(const wchar_t *path) {
+  detail::WinHandle h(path, DELETE, FILE_FLAG_OPEN_REPARSE_POINT);
+  if (!h)
+    return set_errno();
+  FILE_DISPOSITION_INFO info;
+  info.DeleteFile = TRUE;
+  if (!SetFileInformationByHandle(h, FileDispositionInfo, &info, sizeof(info)))
+    return set_errno();
+  return 0;
+}
+
+int truncate_handle(HANDLE h, off_t length) {
+  LARGE_INTEGER size_param;
+  size_param.QuadPart = length;
+  if (!SetFilePointerEx(h, size_param, 0, FILE_BEGIN))
+    return set_errno();
+  if (!SetEndOfFile(h))
+    return set_errno();
+  return 0;
+}
+
+int ftruncate(int fd, off_t length) {
+  HANDLE h = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
+  return truncate_handle(h, length);
+}
+
+int truncate(const wchar_t *path, off_t length) {
+  detail::WinHandle h(path, GENERIC_WRITE, 0);
+  if (!h)
+    return set_errno();
+  return truncate_handle(h, length);
+}
+
+int rename(const wchar_t *from, const wchar_t *to) {
+  if (!(MoveFileExW(from, to,
+                    MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING |
+                        MOVEFILE_WRITE_THROUGH)))
+    return set_errno();
+  return 0;
+}
+
+template <class... Args> int open(const wchar_t *filename, Args... args) {
+  return _wopen(filename, args...);
+}
+int close(int fd) { return _close(fd); }
+int chdir(const wchar_t *path) { return _wchdir(path); }
+
+struct StatVFS {
+  uint64_t f_frsize;
+  uint64_t f_blocks;
+  uint64_t f_bfree;
+  uint64_t f_bavail;
+};
+
+int statvfs(const wchar_t *p, StatVFS *buf) {
+  path dir = p;
+  while (true) {
+    error_code local_ec;
+    const file_status st = status(dir, local_ec);
+    if (!exists(st) || is_directory(st))
+      break;
+    path parent = dir.parent_path();
+    if (parent == dir) {
+      errno = ENOENT;
+      return -1;
+    }
+    dir = parent;
+  }
+  ULARGE_INTEGER free_bytes_available_to_caller, total_number_of_bytes,
+      total_number_of_free_bytes;
+  if (!GetDiskFreeSpaceExW(dir.c_str(), &free_bytes_available_to_caller,
+                           &total_number_of_bytes, &total_number_of_free_bytes))
+    return set_errno();
+  buf->f_frsize = 1;
+  buf->f_blocks = total_number_of_bytes.QuadPart;
+  buf->f_bfree = total_number_of_free_bytes.QuadPart;
+  buf->f_bavail = free_bytes_available_to_caller.QuadPart;
+  return 0;
+}
+
+wchar_t *getcwd(wchar_t *buff, size_t size) { return _wgetcwd(buff, size); }
+
+wchar_t *realpath(const wchar_t *path, wchar_t *resolved_name) {
+  // Only expected to be used with us allocating the buffer.
+  _LIBCPP_ASSERT(resolved_name == nullptr,
+                 "Windows realpath() assumes a null resolved_name");
+
+  WinHandle h(path, FILE_READ_ATTRIBUTES, 0);
+  if (!h) {
+    set_errno();
+    return nullptr;
+  }
+  size_t buff_size = MAX_PATH + 10;
+  std::unique_ptr<wchar_t, decltype(&::free)> buff(
+      static_cast<wchar_t *>(malloc(buff_size * sizeof(wchar_t))), &::free);
+  DWORD retval = GetFinalPathNameByHandleW(
+      h, buff.get(), buff_size, FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
+  if (retval > buff_size) {
+    buff_size = retval;
+    buff.reset(static_cast<wchar_t *>(malloc(buff_size * sizeof(wchar_t))));
+    retval = GetFinalPathNameByHandleW(h, buff.get(), buff_size,
+                                       FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
+  }
+  if (!retval) {
+    set_errno();
+    return nullptr;
+  }
+  wchar_t *ptr = buff.get();
+  if (!wcsncmp(ptr, L"\\\\?\\", 4)) {
+    if (ptr[5] == ':') { // \\?\X: -> X:
+      memmove(&ptr[0], &ptr[4], (wcslen(&ptr[4]) + 1) * sizeof(wchar_t));
+    } else if (!wcsncmp(&ptr[4], L"UNC\\", 4)) { // \\?\UNC\server -> \\server
+      wcscpy(&ptr[0], L"\\\\");
+      memmove(&ptr[2], &ptr[8], (wcslen(&ptr[8]) + 1) * sizeof(wchar_t));
+    }
+  }
+  return buff.release();
+}
+
+#define AT_FDCWD -1
+#define AT_SYMLINK_NOFOLLOW 1
+using ModeT = int;
+
+int fchmod_handle(HANDLE h, int perms) {
+  FILE_BASIC_INFO basic;
+  if (!GetFileInformationByHandleEx(h, FileBasicInfo, &basic, sizeof(basic)))
+    return set_errno();
+  DWORD orig_attributes = basic.FileAttributes;
+  basic.FileAttributes &= ~FILE_ATTRIBUTE_READONLY;
+  if ((perms & 0222) == 0)
+    basic.FileAttributes |= FILE_ATTRIBUTE_READONLY;
+  if (basic.FileAttributes != orig_attributes &&
+      !SetFileInformationByHandle(h, FileBasicInfo, &basic, sizeof(basic)))
+    return set_errno();
+  return 0;
+}
+
+int fchmodat(int fd, const wchar_t *path, int perms, int flag) {
+  DWORD attributes = GetFileAttributesW(path);
+  if (attributes == INVALID_FILE_ATTRIBUTES)
+    return set_errno();
+  if (attributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+      !(flag & AT_SYMLINK_NOFOLLOW)) {
+    // If the file is a symlink, and we are supposed to operate on the target
+    // of the symlink, we need to open a handle to it, without the
+    // FILE_FLAG_OPEN_REPARSE_POINT flag, to open the destination of the
+    // symlink, and operate on it via the handle.
+    detail::WinHandle h(path, FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES, 0);
+    if (!h)
+      return set_errno();
+    return fchmod_handle(h, perms);
+  } else {
+    // For a non-symlink, or if operating on the symlink itself instead of
+    // its target, we can use SetFileAttributesW, saving a few calls.
+    DWORD orig_attributes = attributes;
+    attributes &= ~FILE_ATTRIBUTE_READONLY;
+    if ((perms & 0222) == 0)
+      attributes |= FILE_ATTRIBUTE_READONLY;
+    if (attributes != orig_attributes && !SetFileAttributesW(path, attributes))
+      return set_errno();
+  }
+  return 0;
+}
+
+int fchmod(int fd, int perms) {
+  HANDLE h = reinterpret_cast<HANDLE>(_get_osfhandle(fd));
+  return fchmod_handle(h, perms);
+}
+
+#define MAX_SYMLINK_SIZE MAXIMUM_REPARSE_DATA_BUFFER_SIZE
+using SSizeT = ::int64_t;
+
+SSizeT readlink(const wchar_t *path, wchar_t *ret_buf, size_t bufsize) {
+  uint8_t buf[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
+  detail::WinHandle h(path, FILE_READ_ATTRIBUTES, FILE_FLAG_OPEN_REPARSE_POINT);
+  if (!h)
+    return set_errno();
+  DWORD out;
+  if (!DeviceIoControl(h, FSCTL_GET_REPARSE_POINT, nullptr, 0, buf, sizeof(buf),
+                       &out, 0))
+    return set_errno();
+  const auto *reparse = reinterpret_cast<LIBCPP_REPARSE_DATA_BUFFER *>(buf);
+  size_t path_buf_offset = offsetof(LIBCPP_REPARSE_DATA_BUFFER,
+                                    SymbolicLinkReparseBuffer.PathBuffer[0]);
+  if (out < path_buf_offset) {
+    errno = EINVAL;
+    return -1;
+  }
+  if (reparse->ReparseTag != IO_REPARSE_TAG_SYMLINK) {
+    errno = EINVAL;
+    return -1;
+  }
+  const auto &symlink = reparse->SymbolicLinkReparseBuffer;
+  unsigned short name_offset, name_length;
+  if (symlink.PrintNameLength == 0) {
+    name_offset = symlink.SubstituteNameOffset;
+    name_length = symlink.SubstituteNameLength;
+  } else {
+    name_offset = symlink.PrintNameOffset;
+    name_length = symlink.PrintNameLength;
+  }
+  // name_offset/length are expressed in bytes, not in wchar_t
+  if (path_buf_offset + name_offset + name_length > out) {
+    errno = EINVAL;
+    return -1;
+  }
+  if (name_length / sizeof(wchar_t) > bufsize) {
+    errno = ENOMEM;
+    return -1;
+  }
+  memcpy(ret_buf, &symlink.PathBuffer[name_offset / sizeof(wchar_t)],
+         name_length);
+  return name_length / sizeof(wchar_t);
+}
+
+#else
+int symlink_file(const char *oldname, const char *newname) {
+  return ::symlink(oldname, newname);
+}
+int symlink_dir(const char *oldname, const char *newname) {
+  return ::symlink(oldname, newname);
+}
+using ::chdir;
+using ::close;
+using ::fchmod;
+#if defined(AT_SYMLINK_NOFOLLOW) && defined(AT_FDCWD)
+using ::fchmodat;
+#endif
+using ::fstat;
+using ::ftruncate;
+using ::getcwd;
+using ::link;
+using ::lstat;
+using ::mkdir;
+using ::open;
+using ::readlink;
+using ::realpath;
+using ::remove;
+using ::rename;
+using ::stat;
+using ::statvfs;
+using ::truncate;
+
+#define O_BINARY 0
+
+using StatVFS = struct statvfs;
+using ModeT = ::mode_t;
+using SSizeT = ::ssize_t;
+
+#endif
+
+} // namespace
+} // end namespace detail
+
+_LIBCPP_END_NAMESPACE_FILESYSTEM
+
+#endif // POSIX_COMPAT_H
diff --git a/app/src/main/cpp/libcxx/src/format.cpp b/app/src/main/cpp/libcxx/src/format.cpp
new file mode 100644
index 0000000..401cccf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/format.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <format>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_INLINE_FORMAT_ERROR_DTOR
+format_error::~format_error() noexcept = default;
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/functional.cpp b/app/src/main/cpp/libcxx/src/functional.cpp
new file mode 100644
index 0000000..ca1079c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/functional.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <functional>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_KEY_FUNCTION
+bad_function_call::~bad_function_call() noexcept
+{
+}
+#endif
+
+#ifdef _LIBCPP_ABI_BAD_FUNCTION_CALL_GOOD_WHAT_MESSAGE
+const char*
+bad_function_call::what() const noexcept
+{
+    return "std::bad_function_call";
+}
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/future.cpp b/app/src/main/cpp/libcxx/src/future.cpp
new file mode 100644
index 0000000..cdaa938
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/future.cpp
@@ -0,0 +1,269 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+#include <future>
+#include <string>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+class _LIBCPP_HIDDEN __future_error_category
+    : public __do_message
+{
+public:
+    virtual const char* name() const noexcept;
+    virtual string message(int ev) const;
+};
+
+const char*
+__future_error_category::name() const noexcept
+{
+    return "future";
+}
+
+_LIBCPP_DIAGNOSTIC_PUSH
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wswitch")
+_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wswitch")
+
+string
+__future_error_category::message(int ev) const
+{
+    switch (static_cast<future_errc>(ev))
+    {
+    case future_errc(0):  // For backwards compatibility with C++11 (LWG 2056)
+    case future_errc::broken_promise:
+        return string("The associated promise has been destructed prior "
+                      "to the associated state becoming ready.");
+    case future_errc::future_already_retrieved:
+        return string("The future has already been retrieved from "
+                      "the promise or packaged_task.");
+    case future_errc::promise_already_satisfied:
+        return string("The state of the promise has already been set.");
+    case future_errc::no_state:
+        return string("Operation not permitted on an object without "
+                      "an associated state.");
+    }
+    return string("unspecified future_errc value\n");
+}
+
+_LIBCPP_DIAGNOSTIC_POP
+
+const error_category&
+future_category() noexcept
+{
+    static __future_error_category __f;
+    return __f;
+}
+
+future_error::future_error(error_code __ec)
+    : logic_error(__ec.message()),
+      __ec_(__ec)
+{
+}
+
+future_error::~future_error() noexcept
+{
+}
+
+void
+__assoc_sub_state::__on_zero_shared() noexcept
+{
+    delete this;
+}
+
+void
+__assoc_sub_state::set_value()
+{
+    unique_lock<mutex> __lk(__mut_);
+    if (__has_value())
+        __throw_future_error(future_errc::promise_already_satisfied);
+    __state_ |= __constructed | ready;
+    __cv_.notify_all();
+}
+
+void
+__assoc_sub_state::set_value_at_thread_exit()
+{
+    unique_lock<mutex> __lk(__mut_);
+    if (__has_value())
+        __throw_future_error(future_errc::promise_already_satisfied);
+    __state_ |= __constructed;
+    __thread_local_data()->__make_ready_at_thread_exit(this);
+}
+
+void
+__assoc_sub_state::set_exception(exception_ptr __p)
+{
+    unique_lock<mutex> __lk(__mut_);
+    if (__has_value())
+        __throw_future_error(future_errc::promise_already_satisfied);
+    __exception_ = __p;
+    __state_ |= ready;
+    __cv_.notify_all();
+}
+
+void
+__assoc_sub_state::set_exception_at_thread_exit(exception_ptr __p)
+{
+    unique_lock<mutex> __lk(__mut_);
+    if (__has_value())
+        __throw_future_error(future_errc::promise_already_satisfied);
+    __exception_ = __p;
+    __thread_local_data()->__make_ready_at_thread_exit(this);
+}
+
+void
+__assoc_sub_state::__make_ready()
+{
+    unique_lock<mutex> __lk(__mut_);
+    __state_ |= ready;
+    __cv_.notify_all();
+}
+
+void
+__assoc_sub_state::copy()
+{
+    unique_lock<mutex> __lk(__mut_);
+    __sub_wait(__lk);
+    if (__exception_ != nullptr)
+        rethrow_exception(__exception_);
+}
+
+void
+__assoc_sub_state::wait()
+{
+    unique_lock<mutex> __lk(__mut_);
+    __sub_wait(__lk);
+}
+
+void
+__assoc_sub_state::__sub_wait(unique_lock<mutex>& __lk)
+{
+    if (!__is_ready())
+    {
+        if (__state_ & static_cast<unsigned>(deferred))
+        {
+            __state_ &= ~static_cast<unsigned>(deferred);
+            __lk.unlock();
+            __execute();
+        }
+        else
+            while (!__is_ready())
+                __cv_.wait(__lk);
+    }
+}
+
+void
+__assoc_sub_state::__execute()
+{
+    __throw_future_error(future_errc::no_state);
+}
+
+future<void>::future(__assoc_sub_state* __state)
+    : __state_(__state)
+{
+    __state_->__attach_future();
+}
+
+future<void>::~future()
+{
+    if (__state_)
+        __state_->__release_shared();
+}
+
+void
+future<void>::get()
+{
+    unique_ptr<__shared_count, __release_shared_count> __(__state_);
+    __assoc_sub_state* __s = __state_;
+    __state_ = nullptr;
+    __s->copy();
+}
+
+promise<void>::promise()
+    : __state_(new __assoc_sub_state)
+{
+}
+
+promise<void>::~promise()
+{
+    if (__state_)
+    {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        if (!__state_->__has_value() && __state_->use_count() > 1)
+            __state_->set_exception(make_exception_ptr(
+                      future_error(make_error_code(future_errc::broken_promise))
+                                                      ));
+#endif // _LIBCPP_NO_EXCEPTIONS
+        __state_->__release_shared();
+    }
+}
+
+future<void>
+promise<void>::get_future()
+{
+    if (__state_ == nullptr)
+        __throw_future_error(future_errc::no_state);
+    return future<void>(__state_);
+}
+
+void
+promise<void>::set_value()
+{
+    if (__state_ == nullptr)
+        __throw_future_error(future_errc::no_state);
+    __state_->set_value();
+}
+
+void
+promise<void>::set_exception(exception_ptr __p)
+{
+    if (__state_ == nullptr)
+        __throw_future_error(future_errc::no_state);
+    __state_->set_exception(__p);
+}
+
+void
+promise<void>::set_value_at_thread_exit()
+{
+    if (__state_ == nullptr)
+        __throw_future_error(future_errc::no_state);
+    __state_->set_value_at_thread_exit();
+}
+
+void
+promise<void>::set_exception_at_thread_exit(exception_ptr __p)
+{
+    if (__state_ == nullptr)
+        __throw_future_error(future_errc::no_state);
+    __state_->set_exception_at_thread_exit(__p);
+}
+
+shared_future<void>::~shared_future()
+{
+    if (__state_)
+        __state_->__release_shared();
+}
+
+shared_future<void>&
+shared_future<void>::operator=(const shared_future& __rhs)
+{
+    if (__rhs.__state_)
+        __rhs.__state_->__add_shared();
+    if (__state_)
+        __state_->__release_shared();
+    __state_ = __rhs.__state_;
+    return *this;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // !_LIBCPP_HAS_NO_THREADS
diff --git a/app/src/main/cpp/libcxx/src/hash.cpp b/app/src/main/cpp/libcxx/src/hash.cpp
new file mode 100644
index 0000000..96cbd38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/hash.cpp
@@ -0,0 +1,559 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__hash_table>
+#include <algorithm>
+#include <stdexcept>
+#include <type_traits>
+
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wtautological-constant-out-of-range-compare")
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace {
+
+// handle all next_prime(i) for i in [1, 210), special case 0
+const unsigned small_primes[] =
+{
+    0,
+    2,
+    3,
+    5,
+    7,
+    11,
+    13,
+    17,
+    19,
+    23,
+    29,
+    31,
+    37,
+    41,
+    43,
+    47,
+    53,
+    59,
+    61,
+    67,
+    71,
+    73,
+    79,
+    83,
+    89,
+    97,
+    101,
+    103,
+    107,
+    109,
+    113,
+    127,
+    131,
+    137,
+    139,
+    149,
+    151,
+    157,
+    163,
+    167,
+    173,
+    179,
+    181,
+    191,
+    193,
+    197,
+    199,
+    211
+};
+
+// potential primes = 210*k + indices[i], k >= 1
+//   these numbers are not divisible by 2, 3, 5 or 7
+//   (or any integer 2 <= j <= 10 for that matter).
+const unsigned indices[] =
+{
+    1,
+    11,
+    13,
+    17,
+    19,
+    23,
+    29,
+    31,
+    37,
+    41,
+    43,
+    47,
+    53,
+    59,
+    61,
+    67,
+    71,
+    73,
+    79,
+    83,
+    89,
+    97,
+    101,
+    103,
+    107,
+    109,
+    113,
+    121,
+    127,
+    131,
+    137,
+    139,
+    143,
+    149,
+    151,
+    157,
+    163,
+    167,
+    169,
+    173,
+    179,
+    181,
+    187,
+    191,
+    193,
+    197,
+    199,
+    209
+};
+
+}
+
+// Returns:  If n == 0, returns 0.  Else returns the lowest prime number that
+// is greater than or equal to n.
+//
+// The algorithm creates a list of small primes, plus an open-ended list of
+// potential primes.  All prime numbers are potential prime numbers.  However
+// some potential prime numbers are not prime.  In an ideal world, all potential
+// prime numbers would be prime.  Candidate prime numbers are chosen as the next
+// highest potential prime.  Then this number is tested for prime by dividing it
+// by all potential prime numbers less than the sqrt of the candidate.
+//
+// This implementation defines potential primes as those numbers not divisible
+// by 2, 3, 5, and 7.  Other (common) implementations define potential primes
+// as those not divisible by 2.  A few other implementations define potential
+// primes as those not divisible by 2 or 3.  By raising the number of small
+// primes which the potential prime is not divisible by, the set of potential
+// primes more closely approximates the set of prime numbers.  And thus there
+// are fewer potential primes to search, and fewer potential primes to divide
+// against.
+
+template <size_t _Sz = sizeof(size_t)>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<_Sz == 4, void>::type
+__check_for_overflow(size_t N)
+{
+    if (N > 0xFFFFFFFB)
+        __throw_overflow_error("__next_prime overflow");
+}
+
+template <size_t _Sz = sizeof(size_t)>
+inline _LIBCPP_INLINE_VISIBILITY
+typename enable_if<_Sz == 8, void>::type
+__check_for_overflow(size_t N)
+{
+    if (N > 0xFFFFFFFFFFFFFFC5ull)
+        __throw_overflow_error("__next_prime overflow");
+}
+
+size_t
+__next_prime(size_t n)
+{
+    const size_t L = 210;
+    const size_t N = sizeof(small_primes) / sizeof(small_primes[0]);
+    // If n is small enough, search in small_primes
+    if (n <= small_primes[N-1])
+        return *std::lower_bound(small_primes, small_primes + N, n);
+    // Else n > largest small_primes
+    // Check for overflow
+    __check_for_overflow(n);
+    // Start searching list of potential primes: L * k0 + indices[in]
+    const size_t M = sizeof(indices) / sizeof(indices[0]);
+    // Select first potential prime >= n
+    //   Known a-priori n >= L
+    size_t k0 = n / L;
+    size_t in = static_cast<size_t>(std::lower_bound(indices, indices + M, n - k0 * L)
+                                    - indices);
+    n = L * k0 + indices[in];
+    while (true)
+    {
+        // Divide n by all primes or potential primes (i) until:
+        //    1.  The division is even, so try next potential prime.
+        //    2.  The i > sqrt(n), in which case n is prime.
+        // It is known a-priori that n is not divisible by 2, 3, 5 or 7,
+        //    so don't test those (j == 5 ->  divide by 11 first).  And the
+        //    potential primes start with 211, so don't test against the last
+        //    small prime.
+        for (size_t j = 5; j < N - 1; ++j)
+        {
+            const std::size_t p = small_primes[j];
+            const std::size_t q = n / p;
+            if (q < p)
+                return n;
+            if (n == q * p)
+                goto next;
+        }
+        // n wasn't divisible by small primes, try potential primes
+        {
+            size_t i = 211;
+            while (true)
+            {
+                std::size_t q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 10;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 8;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 8;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 6;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 4;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 2;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                i += 10;
+                q = n / i;
+                if (q < i)
+                    return n;
+                if (n == q * i)
+                    break;
+
+                // This will loop i to the next "plane" of potential primes
+                i += 2;
+            }
+        }
+next:
+        // n is not prime.  Increment n to next potential prime.
+        if (++in == M)
+        {
+            ++k0;
+            in = 0;
+        }
+        n = L * k0 + indices[in];
+    }
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/include/apple_availability.h b/app/src/main/cpp/libcxx/src/include/apple_availability.h
new file mode 100644
index 0000000..75bf796
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/apple_availability.h
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_SRC_INCLUDE_APPLE_AVAILABILITY_H
+#define _LIBCPP_SRC_INCLUDE_APPLE_AVAILABILITY_H
+
+#if defined(__APPLE__)
+
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101300
+#define _LIBCPP_USE_UTIMENSAT
+#endif
+#elif defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 110000
+#define _LIBCPP_USE_UTIMENSAT
+#endif
+#elif defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ >= 110000
+#define _LIBCPP_USE_UTIMENSAT
+#endif
+#elif defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 40000
+#define _LIBCPP_USE_UTIMENSAT
+#endif
+#endif // __ENVIRONMENT_.*_VERSION_MIN_REQUIRED__
+
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 101500
+#define _LIBCPP_USE_ULOCK
+#endif
+#elif defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__ >= 130000
+#define _LIBCPP_USE_ULOCK
+#endif
+#elif defined(__ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_TV_OS_VERSION_MIN_REQUIRED__ >= 130000
+#define _LIBCPP_USE_ULOCK
+#endif
+#elif defined(__ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__)
+#if __ENVIRONMENT_WATCH_OS_VERSION_MIN_REQUIRED__ >= 60000
+#define _LIBCPP_USE_ULOCK
+#endif
+#endif // __ENVIRONMENT_.*_VERSION_MIN_REQUIRED__
+
+#endif // __APPLE__
+
+#endif // _LIBCPP_SRC_INCLUDE_APPLE_AVAILABILITY_H
diff --git a/app/src/main/cpp/libcxx/src/include/atomic_support.h b/app/src/main/cpp/libcxx/src/include/atomic_support.h
new file mode 100644
index 0000000..3e73f2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/atomic_support.h
@@ -0,0 +1,176 @@
+//===----------------------------------------------------------------------===////
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===////
+
+#ifndef ATOMIC_SUPPORT_H
+#define ATOMIC_SUPPORT_H
+
+#include <__config>
+#include <memory> // for __libcpp_relaxed_load
+
+#if defined(__clang__) && __has_builtin(__atomic_load_n)             \
+                       && __has_builtin(__atomic_store_n)            \
+                       && __has_builtin(__atomic_add_fetch)          \
+                       && __has_builtin(__atomic_exchange_n)         \
+                       && __has_builtin(__atomic_compare_exchange_n) \
+                       && defined(__ATOMIC_RELAXED)                  \
+                       && defined(__ATOMIC_CONSUME)                  \
+                       && defined(__ATOMIC_ACQUIRE)                  \
+                       && defined(__ATOMIC_RELEASE)                  \
+                       && defined(__ATOMIC_ACQ_REL)                  \
+                       && defined(__ATOMIC_SEQ_CST)
+#   define _LIBCPP_HAS_ATOMIC_BUILTINS
+#elif defined(_LIBCPP_COMPILER_GCC)
+#   define _LIBCPP_HAS_ATOMIC_BUILTINS
+#endif
+
+#if !defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS)
+# if defined(_LIBCPP_WARNING)
+    _LIBCPP_WARNING("Building libc++ without __atomic builtins is unsupported")
+# else
+#   warning Building libc++ without __atomic builtins is unsupported
+# endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace {
+
+#if defined(_LIBCPP_HAS_ATOMIC_BUILTINS) && !defined(_LIBCPP_HAS_NO_THREADS)
+
+enum __libcpp_atomic_order {
+    _AO_Relaxed = __ATOMIC_RELAXED,
+    _AO_Consume = __ATOMIC_CONSUME,
+    _AO_Acquire = __ATOMIC_ACQUIRE,
+    _AO_Release = __ATOMIC_RELEASE,
+    _AO_Acq_Rel = __ATOMIC_ACQ_REL,
+    _AO_Seq     = __ATOMIC_SEQ_CST
+};
+
+template <class _ValueType, class _FromType>
+inline _LIBCPP_INLINE_VISIBILITY
+void __libcpp_atomic_store(_ValueType* __dest, _FromType __val,
+                           int __order = _AO_Seq)
+{
+    __atomic_store_n(__dest, __val, __order);
+}
+
+template <class _ValueType, class _FromType>
+inline _LIBCPP_INLINE_VISIBILITY
+void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val)
+{
+    __atomic_store_n(__dest, __val, _AO_Relaxed);
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_atomic_load(_ValueType const* __val,
+                                int __order = _AO_Seq)
+{
+    return __atomic_load_n(__val, __order);
+}
+
+template <class _ValueType, class _AddType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a,
+                               int __order = _AO_Seq)
+{
+    return __atomic_add_fetch(__val, __a, __order);
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_atomic_exchange(_ValueType* __target,
+                                    _ValueType __value, int __order = _AO_Seq)
+{
+    return __atomic_exchange_n(__target, __value, __order);
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+bool __libcpp_atomic_compare_exchange(_ValueType* __val,
+    _ValueType* __expected, _ValueType __after,
+    int __success_order = _AO_Seq,
+    int __fail_order = _AO_Seq)
+{
+    return __atomic_compare_exchange_n(__val, __expected, __after, true,
+                                       __success_order, __fail_order);
+}
+
+#else // _LIBCPP_HAS_NO_THREADS
+
+enum __libcpp_atomic_order {
+    _AO_Relaxed,
+    _AO_Consume,
+    _AO_Acquire,
+    _AO_Release,
+    _AO_Acq_Rel,
+    _AO_Seq
+};
+
+template <class _ValueType, class _FromType>
+inline _LIBCPP_INLINE_VISIBILITY
+void __libcpp_atomic_store(_ValueType* __dest, _FromType __val,
+                           int = 0)
+{
+    *__dest = __val;
+}
+
+template <class _ValueType, class _FromType>
+inline _LIBCPP_INLINE_VISIBILITY
+void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val)
+{
+    *__dest = __val;
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_atomic_load(_ValueType const* __val,
+                                int = 0)
+{
+    return *__val;
+}
+
+template <class _ValueType, class _AddType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_atomic_add(_ValueType* __val, _AddType __a,
+                               int = 0)
+{
+    return *__val += __a;
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_atomic_exchange(_ValueType* __target,
+                                    _ValueType __value, int = _AO_Seq)
+{
+    _ValueType old = *__target;
+    *__target = __value;
+    return old;
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+bool __libcpp_atomic_compare_exchange(_ValueType* __val,
+    _ValueType* __expected, _ValueType __after,
+    int = 0, int = 0)
+{
+    if (*__val == *__expected) {
+        *__val = __after;
+        return true;
+    }
+    *__expected = *__val;
+    return false;
+}
+
+#endif // _LIBCPP_HAS_NO_THREADS
+
+} // end namespace
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // ATOMIC_SUPPORT_H
diff --git a/app/src/main/cpp/libcxx/src/include/config_elast.h b/app/src/main/cpp/libcxx/src/include/config_elast.h
new file mode 100644
index 0000000..bef26ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/config_elast.h
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_CONFIG_ELAST
+#define _LIBCPP_CONFIG_ELAST
+
+#include <__config>
+
+#if defined(_LIBCPP_MSVCRT_LIKE)
+#include <stdlib.h>
+#else
+#include <errno.h>
+#endif
+
+// Note: _LIBCPP_ELAST needs to be defined only on platforms
+// where strerror/strerror_r can't handle out-of-range errno values.
+#if defined(ELAST)
+#define _LIBCPP_ELAST ELAST
+#elif defined(_NEWLIB_VERSION)
+#define _LIBCPP_ELAST __ELASTERROR
+#elif defined(__NuttX__)
+// No _LIBCPP_ELAST needed on NuttX
+#elif defined(__Fuchsia__)
+// No _LIBCPP_ELAST needed on Fuchsia
+#elif defined(__wasi__)
+// No _LIBCPP_ELAST needed on WASI
+#elif defined(__EMSCRIPTEN__)
+// No _LIBCPP_ELAST needed on Emscripten
+#elif defined(__linux__) || defined(_LIBCPP_HAS_MUSL_LIBC)
+#define _LIBCPP_ELAST 4095
+#elif defined(__APPLE__)
+// No _LIBCPP_ELAST needed on Apple
+#elif defined(__sun__)
+#define _LIBCPP_ELAST ESTALE
+#elif defined(__MVS__)
+#define _LIBCPP_ELAST 1160
+#elif defined(_LIBCPP_MSVCRT_LIKE)
+#define _LIBCPP_ELAST (_sys_nerr - 1)
+#elif defined(_AIX)
+#define _LIBCPP_ELAST 127
+#else
+// Warn here so that the person doing the libcxx port has an easier time:
+#warning ELAST for this platform not yet implemented
+#endif
+
+#endif // _LIBCPP_CONFIG_ELAST
diff --git a/app/src/main/cpp/libcxx/src/include/refstring.h b/app/src/main/cpp/libcxx/src/include/refstring.h
new file mode 100644
index 0000000..0675b39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/refstring.h
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_REFSTRING_H
+#define _LIBCPP_REFSTRING_H
+
+#include <__config>
+#include <stdexcept>
+#include <cstddef>
+#include <cstring>
+#include "atomic_support.h"
+
+// MacOS and iOS used to ship with libstdc++, and still support old applications
+// linking against libstdc++. The libc++ and libstdc++ exceptions are supposed
+// to be ABI compatible, such that they can be thrown from one library and caught
+// in the other.
+//
+// For that reason, we must look for libstdc++ in the same process and if found,
+// check the string stored in the exception object to see if it is the GCC empty
+// string singleton before manipulating the reference count. This is done so that
+// if an exception is created with a zero-length string in libstdc++, libc++abi
+// won't try to delete the memory.
+#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) || \
+    defined(__ENVIRONMENT_IPHONE_OS_VERSION_MIN_REQUIRED__)
+#   define _LIBCPP_CHECK_FOR_GCC_EMPTY_STRING_STORAGE
+#   include <dlfcn.h>
+#   include <mach-o/dyld.h>
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace __refstring_imp { namespace {
+typedef int count_t;
+
+struct _Rep_base {
+    std::size_t len;
+    std::size_t cap;
+    count_t     count;
+};
+
+inline _Rep_base* rep_from_data(const char *data_) noexcept {
+    char *data = const_cast<char *>(data_);
+    return reinterpret_cast<_Rep_base *>(data - sizeof(_Rep_base));
+}
+
+inline char * data_from_rep(_Rep_base *rep) noexcept {
+    char *data = reinterpret_cast<char *>(rep);
+    return data + sizeof(*rep);
+}
+
+#if defined(_LIBCPP_CHECK_FOR_GCC_EMPTY_STRING_STORAGE)
+inline
+const char* compute_gcc_empty_string_storage() noexcept
+{
+    void* handle = dlopen("/usr/lib/libstdc++.6.dylib", RTLD_NOLOAD);
+    if (handle == nullptr)
+        return nullptr;
+    void* sym = dlsym(handle, "_ZNSs4_Rep20_S_empty_rep_storageE");
+    if (sym == nullptr)
+        return nullptr;
+    return data_from_rep(reinterpret_cast<_Rep_base *>(sym));
+}
+
+inline
+const char*
+get_gcc_empty_string_storage() noexcept
+{
+    static const char* p = compute_gcc_empty_string_storage();
+    return p;
+}
+#endif
+
+}} // namespace __refstring_imp
+
+using namespace __refstring_imp;
+
+inline
+__libcpp_refstring::__libcpp_refstring(const char* msg) {
+    std::size_t len = strlen(msg);
+    _Rep_base* rep = static_cast<_Rep_base *>(::operator new(sizeof(*rep) + len + 1));
+    rep->len = len;
+    rep->cap = len;
+    rep->count = 0;
+    char *data = data_from_rep(rep);
+    std::memcpy(data, msg, len + 1);
+    __imp_ = data;
+}
+
+inline
+__libcpp_refstring::__libcpp_refstring(const __libcpp_refstring &s) noexcept
+    : __imp_(s.__imp_)
+{
+    if (__uses_refcount())
+        __libcpp_atomic_add(&rep_from_data(__imp_)->count, 1);
+}
+
+inline
+__libcpp_refstring& __libcpp_refstring::operator=(__libcpp_refstring const& s) noexcept {
+    bool adjust_old_count = __uses_refcount();
+    struct _Rep_base *old_rep = rep_from_data(__imp_);
+    __imp_ = s.__imp_;
+    if (__uses_refcount())
+        __libcpp_atomic_add(&rep_from_data(__imp_)->count, 1);
+    if (adjust_old_count)
+    {
+        if (__libcpp_atomic_add(&old_rep->count, count_t(-1)) < 0)
+        {
+            ::operator delete(old_rep);
+        }
+    }
+    return *this;
+}
+
+inline
+__libcpp_refstring::~__libcpp_refstring() {
+    if (__uses_refcount()) {
+        _Rep_base* rep = rep_from_data(__imp_);
+        if (__libcpp_atomic_add(&rep->count, count_t(-1)) < 0) {
+            ::operator delete(rep);
+        }
+    }
+}
+
+inline
+bool __libcpp_refstring::__uses_refcount() const {
+#if defined(_LIBCPP_CHECK_FOR_GCC_EMPTY_STRING_STORAGE)
+    return __imp_ != get_gcc_empty_string_storage();
+#else
+    return true;
+#endif
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif //_LIBCPP_REFSTRING_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/common.h b/app/src/main/cpp/libcxx/src/include/ryu/common.h
new file mode 100644
index 0000000..c24115c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/common.h
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_COMMON_H
+#define _LIBCPP_SRC_INCLUDE_RYU_COMMON_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__assert>
+#include "__config"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __decimalLength9(const uint32_t __v) {
+  // Function precondition: __v is not a 10-digit number.
+  // (f2s: 9 digits are sufficient for round-tripping.)
+  // (d2fixed: We print 9-digit blocks.)
+  _LIBCPP_ASSERT(__v < 1000000000, "");
+  if (__v >= 100000000) { return 9; }
+  if (__v >= 10000000) { return 8; }
+  if (__v >= 1000000) { return 7; }
+  if (__v >= 100000) { return 6; }
+  if (__v >= 10000) { return 5; }
+  if (__v >= 1000) { return 4; }
+  if (__v >= 100) { return 3; }
+  if (__v >= 10) { return 2; }
+  return 1;
+}
+
+// Returns __e == 0 ? 1 : ceil(log_2(5^__e)).
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI  inline int32_t __pow5bits(const int32_t __e) {
+  // This approximation works up to the point that the multiplication overflows at __e = 3529.
+  // If the multiplication were done in 64 bits, it would fail at 5^4004 which is just greater
+  // than 2^9297.
+  _LIBCPP_ASSERT(__e >= 0, "");
+  _LIBCPP_ASSERT(__e <= 3528, "");
+  return static_cast<int32_t>(((static_cast<uint32_t>(__e) * 1217359) >> 19) + 1);
+}
+
+// Returns floor(log_10(2^__e)).
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI  inline uint32_t __log10Pow2(const int32_t __e) {
+  // The first value this approximation fails for is 2^1651 which is just greater than 10^297.
+  _LIBCPP_ASSERT(__e >= 0, "");
+  _LIBCPP_ASSERT(__e <= 1650, "");
+  return (static_cast<uint32_t>(__e) * 78913) >> 18;
+}
+
+// Returns floor(log_10(5^__e)).
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __log10Pow5(const int32_t __e) {
+  // The first value this approximation fails for is 5^2621 which is just greater than 10^1832.
+  _LIBCPP_ASSERT(__e >= 0, "");
+  _LIBCPP_ASSERT(__e <= 2620, "");
+  return (static_cast<uint32_t>(__e) * 732923) >> 20;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __float_to_bits(const float __f) {
+  uint32_t __bits = 0;
+  _VSTD::memcpy(&__bits, &__f, sizeof(float));
+  return __bits;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __double_to_bits(const double __d) {
+  uint64_t __bits = 0;
+  _VSTD::memcpy(&__bits, &__d, sizeof(double));
+  return __bits;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_COMMON_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/d2fixed.h b/app/src/main/cpp/libcxx/src/include/ryu/d2fixed.h
new file mode 100644
index 0000000..b8862de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/d2fixed.h
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_D2FIXED_H
+#define _LIBCPP_SRC_INCLUDE_RYU_D2FIXED_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__config>
+#include <cstdint>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+void __append_n_digits(const uint32_t __olength, uint32_t __digits, char* const __result);
+void __append_nine_digits(uint32_t __digits, char* const __result);
+
+[[nodiscard]] to_chars_result __d2fixed_buffered_n(char* _First, char* const _Last, const double __d, const uint32_t __precision);
+[[nodiscard]] to_chars_result __d2exp_buffered_n(char* _First, char* const _Last, const double __d, uint32_t __precision);
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_D2FIXED_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/d2fixed_full_table.h b/app/src/main/cpp/libcxx/src/include/ryu/d2fixed_full_table.h
new file mode 100644
index 0000000..a63d6f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/d2fixed_full_table.h
@@ -0,0 +1,4451 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_D2FIXED_FULL_TABLE_H
+#define _LIBCPP_SRC_INCLUDE_RYU_D2FIXED_FULL_TABLE_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__config>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline constexpr int __TABLE_SIZE = 64;
+
+inline constexpr uint16_t __POW10_OFFSET[__TABLE_SIZE] = {
+  0, 2, 5, 8, 12, 16, 21, 26, 32, 39,
+  46, 54, 62, 71, 80, 90, 100, 111, 122, 134,
+  146, 159, 173, 187, 202, 217, 233, 249, 266, 283,
+  301, 319, 338, 357, 377, 397, 418, 440, 462, 485,
+  508, 532, 556, 581, 606, 632, 658, 685, 712, 740,
+  769, 798, 828, 858, 889, 920, 952, 984, 1017, 1050,
+  1084, 1118, 1153, 1188
+};
+
+inline constexpr uint64_t __POW10_SPLIT[1224][3] = {
+  {                    1u,    72057594037927936u,                    0u },
+  {   699646928636035157u,             72057594u,                    0u },
+  {                    1u,                    0u,                  256u },
+  { 11902091922964236229u,        4722366482869u,                    0u },
+  {  6760415703743915872u,                 4722u,                    0u },
+  {                    1u,                    0u,             16777216u },
+  { 13369850649504950658u,   309485009821345068u,                    0u },
+  { 15151142278969419334u,            309485009u,                    0u },
+  {                    1u,                    0u,          75511627776u },
+  {  4635408826454083567u,  9437866644873197963u,                 1099u },
+  { 12367138975830625353u,       20282409603651u,                    0u },
+  {  7555853734021184432u,                20282u,                    0u },
+  {                    1u,                    0u,         250037927936u },
+  {  5171444645924616995u,   699646928636035156u,             72057594u },
+  { 16672297533003297786u,  1329227995784915872u,                    0u },
+  { 14479142226848862515u,           1329227995u,                    0u },
+  {                    1u,                    0u,         181645213696u },
+  { 12214193123817091081u, 11902091922964236228u,         114366482869u },
+  { 16592893013671929435u,  6760415703743915871u,                 4722u },
+  {  4549827147718617003u,       87112285931760u,                    0u },
+  {  5274510003815168971u,                87112u,                    0u },
+  {                    1u,                    0u,          44724781056u },
+  {  9794971998307800535u, 13369850649504950657u,         209821345068u },
+  { 14720142899209240169u, 15151142278969419333u,            309485009u },
+  {  4300745446091561535u,  5708990770823839524u,                    0u },
+  { 15197156861335443364u,           5708990770u,                    0u },
+  {                    1u,                    0u,         139251286016u },
+  { 13484604155038683037u,  4635408826454083566u,          67670423947u },
+  {  8356963862052375699u, 12367138975830625352u,          58409603651u },
+  {  5850852848337610021u,  7555853734021184431u,                20282u },
+  {  2712780827214982050u,      374144419156711u,                    0u },
+  {  7732076577307618052u,               374144u,                    0u },
+  {                    1u,                    0u,          84280344576u },
+  { 17296309485351745867u,  5171444645924616994u,         160903807060u },
+  { 16598859101615853088u, 16672297533003297785u,         219784915872u },
+  {  7469952526870444257u, 14479142226848862514u,           1329227995u },
+  { 13531654022114669524u,  6073184580144670117u,                    1u },
+  { 15757609704383306943u,          24519928653u,                    0u },
+  {  9590990814237149590u,                   24u,                    0u },
+  {                    1u,                    0u,         196662132736u },
+  { 15408590707489433890u, 12214193123817091080u,          95899502532u },
+  { 18332056844289122710u, 16592893013671929434u,         240246646623u },
+  { 11114572877353986193u,  4549827147718617002u,          72285931760u },
+  {  1703393793997526525u,  5274510003815168970u,                87112u },
+  {  5082852056285196265u,     1606938044258990u,                    0u },
+  {   816434266573722365u,              1606938u,                    0u },
+  {                    1u,                    0u,         129530986496u },
+  {  5736523019264798742u,  9794971998307800534u,          69797980545u },
+  { 10129314776268243339u, 14720142899209240168u,          36233143877u },
+  { 16511595775483995364u,  4300745446091561534u,          50823839524u },
+  { 12367293405401453325u, 15197156861335443363u,           5708990770u },
+  { 16934621733248854291u, 13078571300009428617u,                    5u },
+  { 10278280417769171336u,         105312291668u,                    0u },
+  {  5760764486226151240u,                  105u,                    0u },
+  {                    1u,                    0u,         238731001856u },
+  {  4128368337188369761u, 13484604155038683036u,          72453031918u },
+  { 10240941003671005056u,  8356963862052375698u,         175317175368u },
+  { 17933378316822368251u,  5850852848337610020u,         231147060143u },
+  {  8346249813075698616u,  2712780827214982049u,         128419156711u },
+  { 15906203609160902695u,  7732076577307618051u,               374144u },
+  { 14525607416135386328u,     6901746346790563u,                    0u },
+  {  6397156777364256320u,              6901746u,                    0u },
+  {                    1u,                    0u,          34937634816u },
+  { 16798760952716600048u, 17296309485351745866u,         249899825954u },
+  {  2419982808370854967u, 16598859101615853087u,          50404946937u },
+  {  2922947087773078956u,  7469952526870444256u,         165733552434u },
+  { 15419220167069510190u, 13531654022114669523u,          77854221733u },
+  {  3452124642157173416u, 15757609704383306942u,          24519928653u },
+  {  5979700067267186899u,  9590990814237149589u,                   24u },
+  {  4913998146922579597u,         452312848583u,                    0u },
+  {  5771037749337678924u,                  452u,                    0u },
+  {                    1u,                    0u,           8835301376u },
+  {  3464734175350698519u, 15408590707489433889u,          90993782792u },
+  {  9334527711335850125u, 18332056844289122709u,         170602522202u },
+  {  7269882896518450106u, 11114572877353986192u,         202092341162u },
+  {  1372511258182263196u,  1703393793997526524u,         174275541962u },
+  {  7571228438575951046u,  5082852056285196264u,          26044258990u },
+  {  2992506536646070406u,   816434266573722364u,              1606938u },
+  {   524517896824344606u,    29642774844752946u,                    0u },
+  { 15582941400898702773u,             29642774u,                    0u },
+  {                    1u,                    0u,         214310977536u },
+  {  3846112492507251066u,  5736523019264798741u,         104549111254u },
+  { 16681117750123089487u, 10129314776268243338u,          62895095400u },
+  { 14986314536556547267u, 16511595775483995363u,         163670432318u },
+  {  2573712825027107389u, 12367293405401453324u,         137918027683u },
+  {  7504855874008324928u, 16934621733248854290u,          84557186697u },
+  {  9572138030626879787u, 10278280417769171335u,         105312291668u },
+  {  8520676959353394843u,  5760764486226151239u,                  105u },
+  { 13448984662897903496u,        1942668892225u,                    0u },
+  { 12338883700918130648u,                 1942u,                    0u },
+  {                    1u,                    0u,         156223799296u },
+  {  2517285787892561600u,  4128368337188369760u,         146555162524u },
+  {  4338831817635138103u, 10240941003671005055u,          36972170386u },
+  {  1561495325934523196u, 17933378316822368250u,         161452451108u },
+  { 12262635050079398786u,  8346249813075698615u,           3862277025u },
+  { 11144065765517284188u, 15906203609160902694u,         163787434755u },
+  {  1212260522471875711u, 14525607416135386327u,         242346790563u },
+  {  9695352922247418869u,  6397156777364256319u,              6901746u },
+  {  7227025834627242948u,   127314748520905380u,                    0u },
+  {  9609008238705447829u,            127314748u,                    0u },
+  {                    1u,                    0u,          74910662656u },
+  {  3609144142396852269u, 16798760952716600047u,          31131187530u },
+  { 11568848377382068865u,  2419982808370854966u,         224158453279u },
+  { 10068303578029323957u,  2922947087773078955u,         211835877600u },
+  { 11645070846862630231u, 15419220167069510189u,         190187140051u },
+  { 12449386705878485055u,  3452124642157173415u,         149324160190u },
+  { 15025619323517318418u,  5979700067267186898u,         199266388373u },
+  { 14996237555047131272u,  4913998146922579596u,         196312848583u },
+  { 10211005638256058413u,  5771037749337678923u,                  452u },
+  {  1014743503555840530u,        8343699359066u,                    0u },
+  { 12900897707145290678u,                 8343u,                    0u },
+  {                    1u,                    0u,          33187823616u },
+  {  4718003016239473662u,  3464734175350698518u,         149506025761u },
+  { 14865830648693666725u,  9334527711335850124u,         144394101141u },
+  { 14754517212823091778u,  7269882896518450105u,         252074403984u },
+  { 11113946551474911901u,  1372511258182263195u,         232410437116u },
+  {  1963520352638130630u,  7571228438575951045u,         252162224104u },
+  { 13342587341404964200u,  2992506536646070405u,          50028434172u },
+  {  6240392545013573291u,   524517896824344605u,          22844752946u },
+  { 14377490861349714758u, 15582941400898702772u,             29642774u },
+  {  1717863312631397839u,   546812681195752981u,                    0u },
+  {  3611005143890591770u,            546812681u,                    0u },
+  {                    1u,                    0u,          21208498176u },
+  { 13168252824351245504u,  3846112492507251065u,         138904285205u },
+  {   735883891883379688u, 16681117750123089486u,         227812409738u },
+  { 10609203866866106404u, 14986314536556547266u,          12139521251u },
+  { 12358191111890306470u,  2573712825027107388u,          18406839052u },
+  { 15229916368406413528u,  7504855874008324927u,         135518906642u },
+  {  7241424335568075942u,  9572138030626879786u,          71461906823u },
+  {  6049715868779871913u,  8520676959353394842u,          65729070919u },
+  {  2000548404719336762u, 13448984662897903495u,         150668892225u },
+  {  1410974761895205301u, 12338883700918130647u,                 1942u },
+  { 16000132467694084868u,       35835915874844u,                    0u },
+  { 16894908866816792556u,                35835u,                    0u },
+  {                    1u,                    0u,          96136462336u },
+  {   589096329272056762u,  2517285787892561599u,         127235208544u },
+  {  7097729792403256904u,  4338831817635138102u,         250084648831u },
+  {  8553736750439287020u,  1561495325934523195u,         183664758778u },
+  {  2114152625261065696u, 12262635050079398785u,          38604121015u },
+  {  9817523680007641224u, 11144065765517284187u,         215065716774u },
+  { 13047215537500048015u,  1212260522471875710u,          63525586135u },
+  { 16755544192002345880u,  9695352922247418868u,         164391777855u },
+  {  6930119832670648356u,  7227025834627242947u,          60520905380u },
+  { 14560698131901886167u,  9609008238705447828u,            127314748u },
+  { 16408020927503338035u,  2348542582773833227u,                    0u },
+  { 14274703510609809116u,           2348542582u,                    0u },
+  {                    1u,                    0u,         239195652096u },
+  { 16428432973129962470u,  3609144142396852268u,          54627148527u },
+  {  3721112279790863774u, 11568848377382068864u,         171545803830u },
+  { 18032764903259620753u, 10068303578029323956u,          45631280555u },
+  { 18058455550468776079u, 11645070846862630230u,         167674882605u },
+  { 15692090139033993190u, 12449386705878485054u,         210814540455u },
+  {   389416944300619393u, 15025619323517318417u,         140812947666u },
+  { 12009691357260487293u, 14996237555047131271u,          75553539724u },
+  { 13494259174449809900u, 10211005638256058412u,          90055009355u },
+  { 18288583400616279877u,  1014743503555840529u,         151699359066u },
+  {     7216107869057472u, 12900897707145290677u,                 8343u },
+  { 17237061291959073878u,      153914086704665u,                    0u },
+  {  1599418782488783273u,               153914u,                    0u },
+  {                    1u,                    0u,          22255763456u },
+  {  9565464987240335777u,  4718003016239473661u,         140805878294u },
+  {   857713933775880687u, 14865830648693666724u,         185799843980u },
+  {  4621617820081363356u, 14754517212823091777u,         155602488249u },
+  {  9630162611715632528u, 11113946551474911900u,         197106442651u },
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+  {  1414857165879849301u, 14658269128098109407u,         119197456865u },
+  { 13819438220812375094u,  3642436268910286110u,         196205082231u },
+  {  6073063033888264440u,  3783099432964819560u,          54514864836u },
+  {  6828883869150720294u,  9497579866027539637u,         222184053046u },
+  {  4548265621068768345u,  3395179445046271360u,         152321926878u },
+  { 10422524923581371874u,  5938502732309497275u,         224314075544u },
+  {  1858996082510682634u,  5793671185917606254u,         224048207584u },
+  {   890276727450878316u,   889272970253526587u,          90465891296u },
+  {  3886008133802710905u,  8594177504370135500u,         102399764570u },
+  {   612074409233016757u,  7374354721120724711u,         190800386918u },
+  {  3927020336901729264u, 14764532643665507566u,                 2494u },
+  {  5298603480094474942u,       46020944252475u,                    0u },
+  { 17418383752590430025u,                46020u,                    0u },
+  {                    1u,                    0u,          45292322816u },
+  {  8973799690601597929u,  5392404173658087694u,         121269781293u },
+  {  1343055462055792431u,  4976586473237854315u,          83342007929u },
+  { 17425118728683169659u,  6308932742419013568u,          51261934931u },
+  { 18389781726026675967u,  4831846642430703058u,         102983344691u },
+  {   272526939565961561u, 18139507855949846900u,         231263777382u },
+  { 11293026845930963228u,  4865833876326628409u,         113775023591u },
+  { 13997416438903902597u, 14296661839130179260u,         163501702257u },
+  {  6186605805999441184u,  9254773150378118247u,         221659992483u },
+  {  4401776373281836138u, 12174712433727875142u,          65038253533u },
+  { 16338917089754547008u,   705653145340915198u,         114962984513u },
+  { 13337700757935003056u, 17763928858962481811u,          50215910002u },
+  { 14612496890816348693u,  3982836567612046295u,         156690140722u },
+  {  3219935399907691719u, 12730849277561967738u,          88938620316u },
+  { 10887238730052330387u, 17314488764367235907u,         102864728152u },
+  {   360256418697768294u, 15951418930590301118u,          37389952614u },
+  {   321440824631118565u,  7193356087283467260u,         136953715493u },
+  { 10069228080701402580u, 17592945625696089445u,         243192687752u },
+  {  9428069607611622975u,  3554461664875361427u,          46120009203u },
+  { 14736799017468812344u,  2213779057785318207u,         153210386222u },
+  { 10875332567307979280u,  3880940796082421147u,         149245476249u },
+  {  4611492910339012807u,  4528237545358141042u,         108633238933u },
+  { 10743508637597314786u, 11681196539088147362u,         140533156716u },
+  {  9356196315668016028u,  9835005502912643016u,         128269103756u },
+  { 15755598617722189347u,  4964088126040986695u,         206181905536u },
+  {  1275276394173375542u,  3355564873147047621u,          30100456398u },
+  { 12644999363867216251u,  1853093467828272926u,         105799888670u },
+  {  4553830511509832021u, 14755341584803008676u,         103254872681u },
+  {  8869400642218174412u,  4701571132542556620u,          87332245607u },
+  { 16570849151159054040u,  6128849686644853850u,          68651977815u },
+  { 16127119334101797673u, 12026867901170202093u,          86970890052u },
+  {  9686867250420930550u, 17909760324981426302u,         230157084246u },
+  { 10678226869774428035u,  2897692901883393663u,            163499238u },
+  {  7767227962910162068u,  3016028602530220424u,                    0u },
+  {  9780840471948993674u,           3016028602u,                    0u },
+  {                    1u,                    0u,         213668069376u },
+  {  6288709332106746357u, 12323704802554838153u,          16386837205u },
+  {  9066785620141948673u,  7135886931147821731u,         141831652624u },
+  {  8442375916704414909u, 15341283120292884946u,          14167660429u },
+  { 11604629218100425803u,  3092789040392634165u,         188477686542u },
+  {  3877248044010875762u,  8811761390822097864u,         134914571196u },
+  { 16435137704395217283u, 16870860798610218168u,         103946077062u },
+  { 14994442577577813271u, 17452041453591904832u,         111559165543u },
+  {  4410105917142436089u, 10314783684009874907u,         245267398767u },
+  {  4632574728444936970u,  4932636630789274902u,         202983581941u },
+  {  9117147535650050359u, 18143884346082124479u,         134153046474u },
+  {   588939301256904809u,  2823209155405527321u,          69877954182u },
+  {   324393982565305683u, 16195396106620226250u,         173062371141u },
+  {  9380909186923521175u,  1150544491807648943u,          73421074605u },
+  {  4463385697777230217u,  7767455475523884823u,          94824230985u },
+  { 16378985502426333808u, 15204378045683991807u,         211934567774u },
+  { 18210894922387834354u, 17239732561718805621u,          38698574803u },
+  {  1555748035329493205u, 12886430624522800061u,          83984577574u },
+  {  4277055533891898507u, 18162250541178258135u,         184923140435u },
+  { 11574429772510874408u, 17028935366700158083u,         219871452856u },
+  { 17391099253493808815u, 16075467823964198636u,         215531468251u },
+  {  5791212393959129882u,  9803858825574498303u,          27946729175u },
+  { 11254268231455680880u, 17464070808143041816u,         124958581275u },
+  { 16355477587312235322u, 17682703471239266775u,         227983788156u },
+  {  2411485149249320633u, 18147688354161351335u,         145361224931u },
+  { 12763114642070638360u,  6663423873348080050u,         183510511249u },
+  {  1147543073987366419u,  9417270363716235132u,         197503883703u },
+  {  8410777835225272692u,  9295013721571344178u,          63336074437u },
+  {  8134725822306818018u,  6199479138350037782u,          14048117055u },
+  {  8899607004752328377u,   887603005365085687u,         232018105614u },
+  {   690976506652396830u,   333989628642975695u,         140250490600u },
+  { 12281570945595192074u,  4620735991403939438u,          54673209484u },
+  { 12592957291365552899u, 12418523063962801200u,         219086071862u },
+  { 13595807339013970272u,  1587745622680169418u,                10715u },
+  {  9698096389749839992u,      197658450495420u,                    0u },
+  {  8310173728816391804u,               197658u,                    0u },
+};
+
+inline constexpr int __TABLE_SIZE_2 = 69;
+inline constexpr int __ADDITIONAL_BITS_2 = 120;
+
+inline constexpr uint16_t __POW10_OFFSET_2[__TABLE_SIZE_2] = {
+     0,    2,    6,   12,   20,   29,   40,   52,   66,   80,
+    95,  112,  130,  150,  170,  192,  215,  240,  265,  292,
+   320,  350,  381,  413,  446,  480,  516,  552,  590,  629,
+   670,  712,  755,  799,  845,  892,  940,  989, 1040, 1092,
+  1145, 1199, 1254, 1311, 1369, 1428, 1488, 1550, 1613, 1678,
+  1743, 1810, 1878, 1947, 2017, 2088, 2161, 2235, 2311, 2387,
+  2465, 2544, 2625, 2706, 2789, 2873, 2959, 3046, 3133
+};
+
+inline constexpr uint8_t __MIN_BLOCK_2[__TABLE_SIZE_2] = {
+     0,    0,    0,    0,    0,    0,    1,    1,    2,    3,
+     3,    4,    4,    5,    5,    6,    6,    7,    7,    8,
+     8,    9,    9,   10,   11,   11,   12,   12,   13,   13,
+    14,   14,   15,   15,   16,   16,   17,   17,   18,   19,
+    19,   20,   20,   21,   21,   22,   22,   23,   23,   24,
+    24,   25,   26,   26,   27,   27,   28,   28,   29,   29,
+    30,   30,   31,   31,   32,   32,   33,   34,    0
+};
+
+inline constexpr uint64_t __POW10_SPLIT_2[3133][3] = {
+  {                    0u,                    0u,              3906250u },
+  {                    0u,                    0u,         202000000000u },
+  {                    0u, 11153727427136454656u,                   59u },
+  {                    0u,  7205759403792793600u,          59604644775u },
+  {                    0u,                    0u,         167390625000u },
+  {                    0u,                    0u,         232000000000u },
+  {                    0u,    16777216000000000u,                    0u },
+  {                    0u, 12945425605062557696u,               909494u },
+  {                    0u,  4388757836872548352u,         182701772928u },
+  {                    0u,  1152921504606846976u,         128237915039u },
+  {                    0u,                    0u,         159062500000u },
+  {                    0u,                    0u,         160000000000u },
+  {                    0u,         256000000000u,                    0u },
+  {                    0u, 16192327041775828992u,                   13u },
+  {                    0u, 15024075324038053888u,          13877787807u },
+  {                    0u,  5449091666327633920u,         159814456755u },
+  {                    0u,  2494994193563254784u,         179295395851u },
+  {                    0u,  4611686018427387904u,          11135253906u },
+  {                    0u,                    0u,         146250000000u },
+  {                    0u,                    0u,         128000000000u },
+  {                    0u,              3906250u,                    0u },
+  {                    0u,     3906250000000000u,                    0u },
+  {                    0u,  4368439412768899072u,               211758u },
+  {                    0u,  1563676642168012800u,          46236813575u },
+  {                    0u, 11532349341402398720u,           7084767080u },
+  {                    0u,  9048364970084925440u,         104625169910u },
+  {                    0u, 16609275425742389248u,         246490512847u },
+  {                    0u,                    0u,         207900390625u },
+  {                    0u,                    0u,         225000000000u },
+  { 11153727427136454656u,                   59u,                    0u },
+  {  7205759403792793600u,          59604644775u,                    0u },
+  {                    0u,  4264412554261970152u,                    3u },
+  {                    0u, 14485570586272534528u,           3231174267u },
+  {                    0u, 17827675094632103936u,         123785264354u },
+  {                    0u,  7347197909193981952u,         226966440203u },
+  {                    0u, 13677404030777688064u,          11398292396u },
+  {                    0u,  3810326759732150272u,         172741453558u },
+  {                    0u,  9943947977234055168u,         246206558227u },
+  {                    0u,                    0u,          19539062500u },
+  {                    0u,                    0u,         228000000000u },
+  { 12945425605062557696u,               909494u,                    0u },
+  {  4388757836872548352u,      909494701772928u,                    0u },
+  {  1152921504606846976u, 14878706826214591391u,                49303u },
+  {                    0u,  4387341015746028192u,         151806576313u },
+  {                    0u,   651726680428265472u,         185237838233u },
+  {                    0u,  2570638187944738816u,         153035330174u },
+  {                    0u,  7419175577111756800u,         126139354575u },
+  {                    0u, 17299322326264840192u,         207402194313u },
+  {                    0u,  7990511638862102528u,         137937798142u },
+  {                    0u, 16717361816799281152u,         254433166503u },
+  {                    0u,                    0u,         167906250000u },
+  {                    0u,                    0u,          16000000000u },
+  { 16192327041775828992u,                   13u,                    0u },
+  { 15024075324038053888u,          13877787807u,                    0u },
+  {  5449091666327633920u, 13877787807814456755u,                    0u },
+  {  2494994193563254784u,  9707857417284919307u,            752316384u },
+  {  4611686018427387904u,  1844515466944871826u,         224526264005u },
+  {                    0u, 15167599819856275072u,         197099991383u },
+  {                    0u, 14830185305589481472u,          87822237233u },
+  {                    0u,  6163721531743535104u,          49803945956u },
+  {                    0u, 14122847407012052992u,         228334136013u },
+  {                    0u,   335491783960035328u,         205765601092u },
+  {                    0u,   941252322120433664u,          68018187046u },
+  {                    0u, 11529215046068469760u,          38051025390u },
+  {                    0u,                    0u,         238625000000u },
+  {                    0u,                    0u,          64000000000u },
+  {  4368439412768899072u,               211758u,                    0u },
+  {  1563676642168012800u,      211758236813575u,                    0u },
+  { 11532349341402398720u,  8061591463141767016u,                11479u },
+  {  9048364970084925440u, 16628725344207857142u,         215437019748u },
+  { 16609275425742389248u,  3555541870038531535u,         100901445007u },
+  {                    0u, 18316647450161853665u,         143192746310u },
+  {                    0u, 16709574568378075648u,          70992947447u },
+  {                    0u,  7696022835795591168u,         247905827852u },
+  {                    0u, 16664449640376041472u,          12417202233u },
+  {                    0u,  3109186955116544000u,          57903381625u },
+  {                    0u, 10515518101817131008u,         121168549362u },
+  {                    0u,  9961962375743537152u,         242570047378u },
+  {                    0u,  9223372036854775808u,         146540039062u },
+  {                    0u,                    0u,         150500000000u },
+  { 14485570586272534528u,           3231174267u,                    0u },
+  { 17827675094632103936u,  3231174267785264354u,                    0u },
+  {  7347197909193981952u,   748977172262750475u,            175162308u },
+  { 13677404030777688064u, 15965033457315095468u,         196040602133u },
+  {  3810326759732150272u, 16809402149066729206u,          21865466197u },
+  {  9943947977234055168u,  7563769067065700371u,          85911239516u },
+  {                    0u, 13550322810840051428u,          92410032742u },
+  {                    0u,  8663209637545764864u,         102734564471u },
+  {                    0u,  8969247575312957440u,         119469633535u },
+  {                    0u,  6193172891660451840u,         255486223885u },
+  {                    0u,  3427954273864908800u,          13335732575u },
+  {                    0u, 10058367555266936832u,          95185829773u },
+  {                    0u, 13907115649320091648u,         141545265197u },
+  {                    0u,                    0u,          45753906250u },
+  {                    0u,                    0u,          74000000000u },
+  { 14878706826214591391u,                49303u,                    0u },
+  {  4387341015746028192u,       49303806576313u,                    0u },
+  {   651726680428265472u, 14106411361315920281u,                 2672u },
+  {  2570638187944738816u,  3609034283485221502u,         112764710092u },
+  {  7419175577111756800u,  9896072247338192335u,         204195646140u },
+  { 17299322326264840192u,  8889095178479228297u,         188536467151u },
+  {  7990511638862102528u,  3631796911038383102u,         207481878815u },
+  { 16717361816799281152u,   898318840772166823u,          31196880105u },
+  {                    0u, 17293677953982795024u,         233048697961u },
+  {                    0u,  7353628266884669440u,         105937492160u },
+  {                    0u,  2404693032470315008u,         192398640987u },
+  {                    0u,  9191155893041889280u,          91130358670u },
+  {                    0u,  6353946855033798656u,         142498253559u },
+  {                    0u,  3767824038248841216u,         247344448149u },
+  {                    0u,  7205759403792793600u,         149204254150u },
+  {                    0u,                    0u,         198390625000u },
+  {                    0u,                    0u,         232000000000u },
+  {  9707857417284919307u,            752316384u,                    0u },
+  {  1844515466944871826u,   752316384526264005u,                    0u },
+  { 15167599819856275072u, 17063068157692817751u,             40783152u },
+  { 14830185305589481472u,  5385330256507239985u,          48924990778u },
+  {  6163721531743535104u,  3373050282752075748u,          58291939338u },
+  { 14122847407012052992u,  4116064001262906061u,          10182853422u },
+  {   335491783960035328u, 11306582046748043076u,          46223132276u },
+  {   941252322120433664u, 17035410946089626406u,         116612931040u },
+  { 11529215046068469760u, 15618595715183448558u,         224923491477u },
+  {                    0u,  5141740092277295680u,         149846685770u },
+  {                    0u, 16973644291514990592u,          74278734288u },
+  {                    0u, 14625255268443750400u,         208920143100u },
+  {                    0u, 14021170507320131584u,         252792836676u },
+  {                    0u,  4451355232865091584u,          68760089176u },
+  {                    0u, 12891553933348044800u,          88241308450u },
+  {                    0u,  1152921504606846976u,          34698852539u },
+  {                    0u,                    0u,         187062500000u },
+  {                    0u,                    0u,         160000000000u },
+  {  8061591463141767016u,                11479u,                    0u },
+  { 16628725344207857142u,       11479437019748u,                    0u },
+  {  3555541870038531535u,  5562205901560339855u,                  622u },
+  { 18316647450161853665u,  2106077949367544134u,         110301527786u },
+  { 16709574568378075648u,  7496855998374373623u,         234114170714u },
+  {  7696022835795591168u,   229183437194837004u,          90406405378u },
+  { 16664449640376041472u,   465169186276472889u,           2012424059u },
+  {  3109186955116544000u,  2152980561625316473u,         123025216872u },
+  { 10515518101817131008u,  2059790725449340402u,         104116713310u },
+  {  9961962375743537152u, 17891190926410198930u,          94111661478u },
+  {  9223372036854775808u,  9930696175609809814u,         166969883403u },
+  {                    0u,  7276914261609005312u,          11538344118u },
+  {                    0u, 10539762974036983808u,         182394482312u },
+  {                    0u, 12851089458992250880u,         136571361695u },
+  {                    0u,  9449311677678878720u,         159696658955u },
+  {                    0u,  8699564697382289408u,          11512248212u },
+  {                    0u,  4224376450473525248u,         148471604347u },
+  {                    0u,  4611686018427387904u,         123229003906u },
+  {                    0u,                    0u,         130250000000u },
+  {                    0u,                    0u,         128000000000u },
+  {   748977172262750475u,            175162308u,                    0u },
+  { 15965033457315095468u,   175162308040602133u,                    0u },
+  { 16809402149066729206u, 13756840147955779925u,              9495567u },
+  {  7563769067065700371u, 13788447602092505948u,          15745759798u },
+  { 13550322810840051428u,  4972540435632173670u,          54747473242u },
+  {  8663209637545764864u,  2844874687533091959u,          90269561957u },
+  {  8969247575312957440u, 15377573779532804095u,         101154220965u },
+  {  6193172891660451840u, 17824715805091194381u,         165833619944u },
+  {  3427954273864908800u, 18277569135638159711u,         232966279779u },
+  { 10058367555266936832u,  4254645803379752845u,          99990829008u },
+  { 13907115649320091648u,  2933643244178200621u,         208230644811u },
+  {                    0u, 17188148801879487562u,          75159033118u },
+  {                    0u, 11069762501163246592u,          30931771413u },
+  {                    0u, 11676570643941818368u,          21600093027u },
+  {                    0u, 17840016768744030208u,          99632988162u },
+  {                    0u, 16463817321652158464u,           2967109246u },
+  {                    0u,  6954191143357644800u,         126892505325u },
+  {                    0u,  5080060379673919488u,         237376987457u },
+  {                    0u,                    0u,          65275390625u },
+  {                    0u,                    0u,         161000000000u },
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+  {  1105464290051876864u,  8488683721235326653u,         230429763923u },
+  {  4500443576769970176u, 11165516518170922283u,          83460172466u },
+  {  2843045143185981440u,  5463648141113596927u,         178605283863u },
+  {   660949699682893824u,  3958440403860778042u,          23296184959u },
+  {   276549164618219520u,  5091534813990256011u,         127214587484u },
+  {  4683743612465315840u,  6100166970623291280u,          92276012655u },
+  {                    0u,  1913011027739012426u,         111330690714u },
+  {                    0u, 11310957650604221440u,         154103704535u },
+  {                    0u, 16303817257009020928u,         215613168242u },
+  {                    0u,  9090406322154766336u,         114883831704u },
+  {                    0u,  3003279315069566976u,         152492791914u },
+  {                    0u, 16582887146675765248u,         106162808097u },
+  {                    0u,  9691746398101307392u,          33898960113u },
+  {                    0u,                    0u,         241525390625u },
+  {                    0u,                    0u,          33000000000u },
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_D2FIXED_FULL_TABLE_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/d2s.h b/app/src/main/cpp/libcxx/src/include/ryu/d2s.h
new file mode 100644
index 0000000..3d9f10c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/d2s.h
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_DS2_H
+#define _LIBCPP_SRC_INCLUDE_RYU_DS2_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__config>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline constexpr int __DOUBLE_MANTISSA_BITS = 52;
+inline constexpr int __DOUBLE_EXPONENT_BITS = 11;
+inline constexpr int __DOUBLE_BIAS = 1023;
+
+inline constexpr int __DOUBLE_POW5_INV_BITCOUNT = 122;
+inline constexpr int __DOUBLE_POW5_BITCOUNT = 121;
+
+[[nodiscard]] to_chars_result __d2s_buffered_n(char* const _First, char* const _Last, const double __f, const chars_format _Fmt);
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_DS2_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/d2s_full_table.h b/app/src/main/cpp/libcxx/src/include/ryu/d2s_full_table.h
new file mode 100644
index 0000000..96307f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/d2s_full_table.h
@@ -0,0 +1,368 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_D2S_FULL_TABLE_H
+#define _LIBCPP_SRC_INCLUDE_RYU_D2S_FULL_TABLE_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__config>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline constexpr uint64_t __DOUBLE_POW5_INV_SPLIT[292][2] = {
+  {                    1u, 288230376151711744u }, {  3689348814741910324u, 230584300921369395u },
+  {  2951479051793528259u, 184467440737095516u }, { 17118578500402463900u, 147573952589676412u },
+  { 12632330341676300947u, 236118324143482260u }, { 10105864273341040758u, 188894659314785808u },
+  { 15463389048156653253u, 151115727451828646u }, { 17362724847566824558u, 241785163922925834u },
+  { 17579528692795369969u, 193428131138340667u }, {  6684925324752475329u, 154742504910672534u },
+  { 18074578149087781173u, 247588007857076054u }, { 18149011334012135262u, 198070406285660843u },
+  {  3451162622983977240u, 158456325028528675u }, {  5521860196774363583u, 253530120045645880u },
+  {  4417488157419490867u, 202824096036516704u }, {  7223339340677503017u, 162259276829213363u },
+  {  7867994130342094503u, 259614842926741381u }, {  2605046489531765280u, 207691874341393105u },
+  {  2084037191625412224u, 166153499473114484u }, { 10713157136084480204u, 265845599156983174u },
+  { 12259874523609494487u, 212676479325586539u }, { 13497248433629505913u, 170141183460469231u },
+  { 14216899864323388813u, 272225893536750770u }, { 11373519891458711051u, 217780714829400616u },
+  {  5409467098425058518u, 174224571863520493u }, {  4965798542738183305u, 278759314981632789u },
+  {  7661987648932456967u, 223007451985306231u }, {  2440241304404055250u, 178405961588244985u },
+  {  3904386087046488400u, 285449538541191976u }, { 17880904128604832013u, 228359630832953580u },
+  { 14304723302883865611u, 182687704666362864u }, { 15133127457049002812u, 146150163733090291u },
+  { 16834306301794583852u, 233840261972944466u }, {  9778096226693756759u, 187072209578355573u },
+  { 15201174610838826053u, 149657767662684458u }, {  2185786488890659746u, 239452428260295134u },
+  {  5437978005854438120u, 191561942608236107u }, { 15418428848909281466u, 153249554086588885u },
+  {  6222742084545298729u, 245199286538542217u }, { 16046240111861969953u, 196159429230833773u },
+  {  1768945645263844993u, 156927543384667019u }, { 10209010661905972635u, 251084069415467230u },
+  {  8167208529524778108u, 200867255532373784u }, { 10223115638361732810u, 160693804425899027u },
+  {  1599589762411131202u, 257110087081438444u }, {  4969020624670815285u, 205688069665150755u },
+  {  3975216499736652228u, 164550455732120604u }, { 13739044029062464211u, 263280729171392966u },
+  {  7301886408508061046u, 210624583337114373u }, { 13220206756290269483u, 168499666669691498u },
+  { 17462981995322520850u, 269599466671506397u }, {  6591687966774196033u, 215679573337205118u },
+  { 12652048002903177473u, 172543658669764094u }, {  9175230360419352987u, 276069853871622551u },
+  {  3650835473593572067u, 220855883097298041u }, { 17678063637842498946u, 176684706477838432u },
+  { 13527506561580357021u, 282695530364541492u }, {  3443307619780464970u, 226156424291633194u },
+  {  6443994910566282300u, 180925139433306555u }, {  5155195928453025840u, 144740111546645244u },
+  { 15627011115008661990u, 231584178474632390u }, { 12501608892006929592u, 185267342779705912u },
+  {  2622589484121723027u, 148213874223764730u }, {  4196143174594756843u, 237142198758023568u },
+  { 10735612169159626121u, 189713759006418854u }, { 12277838550069611220u, 151771007205135083u },
+  { 15955192865369467629u, 242833611528216133u }, {  1696107848069843133u, 194266889222572907u },
+  { 12424932722681605476u, 155413511378058325u }, {  1433148282581017146u, 248661618204893321u },
+  { 15903913885032455010u, 198929294563914656u }, {  9033782293284053685u, 159143435651131725u },
+  { 14454051669254485895u, 254629497041810760u }, { 11563241335403588716u, 203703597633448608u },
+  { 16629290697806691620u, 162962878106758886u }, {   781423413297334329u, 260740604970814219u },
+  {  4314487545379777786u, 208592483976651375u }, {  3451590036303822229u, 166873987181321100u },
+  {  5522544058086115566u, 266998379490113760u }, {  4418035246468892453u, 213598703592091008u },
+  { 10913125826658934609u, 170878962873672806u }, { 10082303693170474728u, 273406340597876490u },
+  {  8065842954536379782u, 218725072478301192u }, { 17520720807854834795u, 174980057982640953u },
+  {  5897060404116273733u, 279968092772225526u }, {  1028299508551108663u, 223974474217780421u },
+  { 15580034865808528224u, 179179579374224336u }, { 17549358155809824511u, 286687326998758938u },
+  {  2971440080422128639u, 229349861599007151u }, { 17134547323305344204u, 183479889279205720u },
+  { 13707637858644275364u, 146783911423364576u }, { 14553522944347019935u, 234854258277383322u },
+  {  4264120725993795302u, 187883406621906658u }, { 10789994210278856888u, 150306725297525326u },
+  {  9885293106962350374u, 240490760476040522u }, {   529536856086059653u, 192392608380832418u },
+  {  7802327114352668369u, 153914086704665934u }, {  1415676938738538420u, 246262538727465495u },
+  {  1132541550990830736u, 197010030981972396u }, { 15663428499760305882u, 157608024785577916u },
+  { 17682787970132668764u, 252172839656924666u }, { 10456881561364224688u, 201738271725539733u },
+  { 15744202878575200397u, 161390617380431786u }, { 17812026976236499989u, 258224987808690858u },
+  {  3181575136763469022u, 206579990246952687u }, { 13613306553636506187u, 165263992197562149u },
+  { 10713244041592678929u, 264422387516099439u }, { 12259944048016053467u, 211537910012879551u },
+  {  6118606423670932450u, 169230328010303641u }, {  2411072648389671274u, 270768524816485826u },
+  { 16686253377679378312u, 216614819853188660u }, { 13349002702143502650u, 173291855882550928u },
+  { 17669055508687693916u, 277266969412081485u }, { 14135244406950155133u, 221813575529665188u },
+  {   240149081334393137u, 177450860423732151u }, { 11452284974360759988u, 283921376677971441u },
+  {  5472479164746697667u, 227137101342377153u }, { 11756680961281178780u, 181709681073901722u },
+  {  2026647139541122378u, 145367744859121378u }, { 18000030682233437097u, 232588391774594204u },
+  { 18089373360528660001u, 186070713419675363u }, {  3403452244197197031u, 148856570735740291u },
+  { 16513570034941246220u, 238170513177184465u }, { 13210856027952996976u, 190536410541747572u },
+  {  3189987192878576934u, 152429128433398058u }, {  1414630693863812771u, 243886605493436893u },
+  {  8510402184574870864u, 195109284394749514u }, { 10497670562401807014u, 156087427515799611u },
+  {  9417575270359070576u, 249739884025279378u }, { 14912757845771077107u, 199791907220223502u },
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+  { 11087511001168814197u, 261871248631691349u }, { 12559357615676961681u, 209496998905353079u },
+  { 13736834907283479668u, 167597599124282463u }, { 18289587036911657145u, 268156158598851941u },
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+  {  4330697733401528726u, 193226876150862917u }, { 14532604630946953951u, 154581500920690333u },
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+  { 13093670675402000985u, 153753944653920260u }, {  2503129006933649959u, 246006311446272417u },
+  { 13070549649772650937u, 196805049157017933u }, { 17835137349301941396u, 157444039325614346u },
+  {  2710778055689733971u, 251910462920982955u }, {  2168622444551787177u, 201528370336786364u },
+  {  5424246770383340065u, 161222696269429091u }, {  1300097203129523457u, 257956314031086546u },
+  { 15797473021471260058u, 206365051224869236u }, {  8948629602435097724u, 165092040979895389u },
+  {  3249760919670425388u, 264147265567832623u }, {  9978506365220160957u, 211317812454266098u },
+  { 15361502721659949412u, 169054249963412878u }, {  2442311466204457120u, 270486799941460606u },
+  { 16711244431931206989u, 216389439953168484u }, { 17058344360286875914u, 173111551962534787u },
+  { 12535955717491360170u, 276978483140055660u }, { 10028764573993088136u, 221582786512044528u },
+  { 15401709288678291155u, 177266229209635622u }, {  9885339602917624555u, 283625966735416996u },
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+  {  4175850161155765295u, 145216494968533502u }, { 10370709072591134795u, 232346391949653603u },
+  { 15675264887556728482u, 185877113559722882u }, {  5161514280561562140u, 148701690847778306u },
+  {   879725219414678777u, 237922705356445290u }, {   703780175531743021u, 190338164285156232u },
+  { 11631070584651125387u, 152270531428124985u }, {   162968861732249003u, 243632850284999977u },
+  { 11198421533611530172u, 194906280227999981u }, {  5269388412147313814u, 155925024182399985u },
+  {  8431021459435702103u, 249480038691839976u }, {  3055468352806651359u, 199584030953471981u },
+  { 17201769941212962380u, 159667224762777584u }, { 16454785461715008838u, 255467559620444135u },
+  { 13163828369372007071u, 204374047696355308u }, { 17909760324981426303u, 163499238157084246u },
+  {  2830174816776909822u, 261598781051334795u }, {  2264139853421527858u, 209279024841067836u },
+  { 16568707141704863579u, 167423219872854268u }, {  4373838538276319787u, 267877151796566830u },
+  {  3499070830621055830u, 214301721437253464u }, {  6488605479238754987u, 171441377149802771u },
+  {  3003071137298187333u, 274306203439684434u }, {  6091805724580460189u, 219444962751747547u },
+  { 15941491023890099121u, 175555970201398037u }, { 10748990379256517301u, 280889552322236860u },
+  {  8599192303405213841u, 224711641857789488u }, { 14258051472207991719u, 179769313486231590u }
+};
+
+inline constexpr uint64_t __DOUBLE_POW5_SPLIT[326][2] = {
+  {                    0u,  72057594037927936u }, {                    0u,  90071992547409920u },
+  {                    0u, 112589990684262400u }, {                    0u, 140737488355328000u },
+  {                    0u,  87960930222080000u }, {                    0u, 109951162777600000u },
+  {                    0u, 137438953472000000u }, {                    0u,  85899345920000000u },
+  {                    0u, 107374182400000000u }, {                    0u, 134217728000000000u },
+  {                    0u,  83886080000000000u }, {                    0u, 104857600000000000u },
+  {                    0u, 131072000000000000u }, {                    0u,  81920000000000000u },
+  {                    0u, 102400000000000000u }, {                    0u, 128000000000000000u },
+  {                    0u,  80000000000000000u }, {                    0u, 100000000000000000u },
+  {                    0u, 125000000000000000u }, {                    0u,  78125000000000000u },
+  {                    0u,  97656250000000000u }, {                    0u, 122070312500000000u },
+  {                    0u,  76293945312500000u }, {                    0u,  95367431640625000u },
+  {                    0u, 119209289550781250u }, {  4611686018427387904u,  74505805969238281u },
+  { 10376293541461622784u,  93132257461547851u }, {  8358680908399640576u, 116415321826934814u },
+  {   612489549322387456u,  72759576141834259u }, { 14600669991935148032u,  90949470177292823u },
+  { 13639151471491547136u, 113686837721616029u }, {  3213881284082270208u, 142108547152020037u },
+  {  4314518811765112832u,  88817841970012523u }, {   781462496279003136u, 111022302462515654u },
+  { 10200200157203529728u, 138777878078144567u }, { 13292654125893287936u,  86736173798840354u },
+  {  7392445620511834112u, 108420217248550443u }, {  4628871007212404736u, 135525271560688054u },
+  { 16728102434789916672u,  84703294725430033u }, {  7075069988205232128u, 105879118406787542u },
+  { 18067209522111315968u, 132348898008484427u }, {  8986162942105878528u,  82718061255302767u },
+  {  6621017659204960256u, 103397576569128459u }, {  3664586055578812416u, 129246970711410574u },
+  { 16125424340018921472u,  80779356694631608u }, {  1710036351314100224u, 100974195868289511u },
+  { 15972603494424788992u, 126217744835361888u }, {  9982877184015493120u,  78886090522101180u },
+  { 12478596480019366400u,  98607613152626475u }, { 10986559581596820096u, 123259516440783094u },
+  {  2254913720070624656u,  77037197775489434u }, { 12042014186943056628u,  96296497219361792u },
+  { 15052517733678820785u, 120370621524202240u }, {  9407823583549262990u,  75231638452626400u },
+  { 11759779479436578738u,  94039548065783000u }, { 14699724349295723422u, 117549435082228750u },
+  {  4575641699882439235u,  73468396926392969u }, { 10331238143280436948u,  91835496157991211u },
+  {  8302361660673158281u, 114794370197489014u }, {  1154580038986672043u, 143492962746861268u },
+  {  9944984561221445835u,  89683101716788292u }, { 12431230701526807293u, 112103877145985365u },
+  {  1703980321626345405u, 140129846432481707u }, { 17205888765512323542u,  87581154020301066u },
+  { 12283988920035628619u, 109476442525376333u }, {  1519928094762372062u, 136845553156720417u },
+  { 12479170105294952299u,  85528470722950260u }, { 15598962631618690374u, 106910588403687825u },
+  {  5663645234241199255u, 133638235504609782u }, { 17374836326682913246u,  83523897190381113u },
+  {  7883487353071477846u, 104404871487976392u }, {  9854359191339347308u, 130506089359970490u },
+  { 10770660513014479971u,  81566305849981556u }, { 13463325641268099964u, 101957882312476945u },
+  {  2994098996302961243u, 127447352890596182u }, { 15706369927971514489u,  79654595556622613u },
+  {  5797904354682229399u,  99568244445778267u }, {  2635694424925398845u, 124460305557222834u },
+  {  6258995034005762182u,  77787690973264271u }, {  3212057774079814824u,  97234613716580339u },
+  { 17850130272881932242u, 121543267145725423u }, { 18073860448192289507u,  75964541966078389u },
+  {  8757267504958198172u,  94955677457597987u }, {  6334898362770359811u, 118694596821997484u },
+  { 13182683513586250689u,  74184123013748427u }, { 11866668373555425458u,  92730153767185534u },
+  {  5609963430089506015u, 115912692208981918u }, { 17341285199088104971u,  72445432630613698u },
+  { 12453234462005355406u,  90556790788267123u }, { 10954857059079306353u, 113195988485333904u },
+  { 13693571323849132942u, 141494985606667380u }, { 17781854114260483896u,  88434366004167112u },
+  {  3780573569116053255u, 110542957505208891u }, {   114030942967678664u, 138178696881511114u },
+  {  4682955357782187069u,  86361685550944446u }, { 15077066234082509644u, 107952106938680557u },
+  {  5011274737320973344u, 134940133673350697u }, { 14661261756894078100u,  84337583545844185u },
+  {  4491519140835433913u, 105421979432305232u }, {  5614398926044292391u, 131777474290381540u },
+  { 12732371365632458552u,  82360921431488462u }, {  6692092170185797382u, 102951151789360578u },
+  { 17588487249587022536u, 128688939736700722u }, { 15604490549419276989u,  80430587335437951u },
+  { 14893927168346708332u, 100538234169297439u }, { 14005722942005997511u, 125672792711621799u },
+  { 15671105866394830300u,  78545495444763624u }, {  1142138259283986260u,  98181869305954531u },
+  { 15262730879387146537u, 122727336632443163u }, {  7233363790403272633u,  76704585395276977u },
+  { 13653390756431478696u,  95880731744096221u }, {  3231680390257184658u, 119850914680120277u },
+  {  4325643253124434363u,  74906821675075173u }, { 10018740084832930858u,  93633527093843966u },
+  {  3300053069186387764u, 117041908867304958u }, { 15897591223523656064u,  73151193042065598u },
+  { 10648616992549794273u,  91438991302581998u }, {  4087399203832467033u, 114298739128227498u },
+  { 14332621041645359599u, 142873423910284372u }, { 18181260187883125557u,  89295889943927732u },
+  {  4279831161144355331u, 111619862429909666u }, { 14573160988285219972u, 139524828037387082u },
+  { 13719911636105650386u,  87203017523366926u }, {  7926517508277287175u, 109003771904208658u },
+  {   684774848491833161u, 136254714880260823u }, {  7345513307948477581u,  85159196800163014u },
+  { 18405263671790372785u, 106448996000203767u }, { 18394893571310578077u, 133061245000254709u },
+  { 13802651491282805250u,  83163278125159193u }, {  3418256308821342851u, 103954097656448992u },
+  {  4272820386026678563u, 129942622070561240u }, {  2670512741266674102u,  81214138794100775u },
+  { 17173198981865506339u, 101517673492625968u }, {  3019754653622331308u, 126897091865782461u },
+  {  4193189667727651020u,  79310682416114038u }, { 14464859121514339583u,  99138353020142547u },
+  { 13469387883465536574u, 123922941275178184u }, {  8418367427165960359u,  77451838296986365u },
+  { 15134645302384838353u,  96814797871232956u }, {   471562554271496325u, 121018497339041196u },
+  {  9518098633274461011u,  75636560836900747u }, {  7285937273165688360u,  94545701046125934u },
+  { 18330793628311886258u, 118182126307657417u }, {  4539216990053847055u,  73863828942285886u },
+  { 14897393274422084627u,  92329786177857357u }, {  4786683537745442072u, 115412232722321697u },
+  { 14520892257159371055u,  72132645451451060u }, { 18151115321449213818u,  90165806814313825u },
+  {  8853836096529353561u, 112707258517892282u }, {  1843923083806916143u, 140884073147365353u },
+  { 12681666973447792349u,  88052545717103345u }, {  2017025661527576725u, 110065682146379182u },
+  { 11744654113764246714u, 137582102682973977u }, {   422879793461572340u,  85988814176858736u },
+  {   528599741826965425u, 107486017721073420u }, {   660749677283706782u, 134357522151341775u },
+  {  7330497575943398595u,  83973451344588609u }, { 13774807988356636147u, 104966814180735761u },
+  {  3383451930163631472u, 131208517725919702u }, { 15949715511634433382u,  82005323578699813u },
+  {  6102086334260878016u, 102506654473374767u }, {  3015921899398709616u, 128133318091718459u },
+  { 18025852251620051174u,  80083323807324036u }, {  4085571240815512351u, 100104154759155046u },
+  { 14330336087874166247u, 125130193448943807u }, { 15873989082562435760u,  78206370905589879u },
+  { 15230800334775656796u,  97757963631987349u }, {  5203442363187407284u, 122197454539984187u },
+  {   946308467778435600u,  76373409087490117u }, {  5794571603150432404u,  95466761359362646u },
+  { 16466586540792816313u, 119333451699203307u }, {  7985773578781816244u,  74583407312002067u },
+  {  5370530955049882401u,  93229259140002584u }, {  6713163693812353001u, 116536573925003230u },
+  { 18030785363914884337u,  72835358703127018u }, { 13315109668038829614u,  91044198378908773u },
+  {  2808829029766373305u, 113805247973635967u }, { 17346094342490130344u, 142256559967044958u },
+  {  6229622945628943561u,  88910349979403099u }, {  3175342663608791547u, 111137937474253874u },
+  { 13192550366365765242u, 138922421842817342u }, {  3633657960551215372u,  86826513651760839u },
+  { 18377130505971182927u, 108533142064701048u }, {  4524669058754427043u, 135666427580876311u },
+  {  9745447189362598758u,  84791517238047694u }, {  2958436949848472639u, 105989396547559618u },
+  { 12921418224165366607u, 132486745684449522u }, { 12687572408530742033u,  82804216052780951u },
+  { 11247779492236039638u, 103505270065976189u }, {   224666310012885835u, 129381587582470237u },
+  {  2446259452971747599u,  80863492239043898u }, { 12281196353069460307u, 101079365298804872u },
+  { 15351495441336825384u, 126349206623506090u }, { 14206370669262903769u,  78968254139691306u },
+  {  8534591299723853903u,  98710317674614133u }, { 15279925143082205283u, 123387897093267666u },
+  { 14161639232853766206u,  77117435683292291u }, { 13090363022639819853u,  96396794604115364u },
+  { 16362953778299774816u, 120495993255144205u }, { 12532689120651053212u,  75309995784465128u },
+  { 15665861400813816515u,  94137494730581410u }, { 10358954714162494836u, 117671868413226763u },
+  {  4168503687137865320u,  73544917758266727u }, {   598943590494943747u,  91931147197833409u },
+  {  5360365506546067587u, 114913933997291761u }, { 11312142901609972388u, 143642417496614701u },
+  {  9375932322719926695u,  89776510935384188u }, { 11719915403399908368u, 112220638669230235u },
+  { 10038208235822497557u, 140275798336537794u }, { 10885566165816448877u,  87672373960336121u },
+  { 18218643725697949000u, 109590467450420151u }, { 18161618638695048346u, 136988084313025189u },
+  { 13656854658398099168u,  85617552695640743u }, { 12459382304570236056u, 107021940869550929u },
+  {  1739169825430631358u, 133777426086938662u }, { 14922039196176308311u,  83610891304336663u },
+  { 14040862976792997485u, 104513614130420829u }, {  3716020665709083144u, 130642017663026037u },
+  {  4628355925281870917u,  81651261039391273u }, { 10397130925029726550u, 102064076299239091u },
+  {  8384727637859770284u, 127580095374048864u }, {  5240454773662356427u,  79737559608780540u },
+  {  6550568467077945534u,  99671949510975675u }, {  3576524565420044014u, 124589936888719594u },
+  {  6847013871814915412u,  77868710555449746u }, { 17782139376623420074u,  97335888194312182u },
+  { 13004302183924499284u, 121669860242890228u }, { 17351060901807587860u,  76043662651806392u },
+  {  3242082053549933210u,  95054578314757991u }, { 17887660622219580224u, 118818222893447488u },
+  { 11179787888887237640u,  74261389308404680u }, { 13974734861109047050u,  92826736635505850u },
+  {  8245046539531533005u, 116033420794382313u }, { 16682369133275677888u,  72520887996488945u },
+  {  7017903361312433648u,  90651109995611182u }, { 17995751238495317868u, 113313887494513977u },
+  {  8659630992836983623u, 141642359368142472u }, {  5412269370523114764u,  88526474605089045u },
+  { 11377022731581281359u, 110658093256361306u }, {  4997906377621825891u, 138322616570451633u },
+  { 14652906532082110942u,  86451635356532270u }, {  9092761128247862869u, 108064544195665338u },
+  {  2142579373455052779u, 135080680244581673u }, { 12868327154477877747u,  84425425152863545u },
+  {  2250350887815183471u, 105531781441079432u }, {  2812938609768979339u, 131914726801349290u },
+  {  6369772649532999991u,  82446704250843306u }, { 17185587848771025797u, 103058380313554132u },
+  {  3035240737254230630u, 128822975391942666u }, {  6508711479211282048u,  80514359619964166u },
+  { 17359261385868878368u, 100642949524955207u }, { 17087390713908710056u, 125803686906194009u },
+  {  3762090168551861929u,  78627304316371256u }, {  4702612710689827411u,  98284130395464070u },
+  { 15101637925217060072u, 122855162994330087u }, { 16356052730901744401u,  76784476871456304u },
+  {  1998321839917628885u,  95980596089320381u }, {  7109588318324424010u, 119975745111650476u },
+  { 13666864735807540814u,  74984840694781547u }, { 12471894901332038114u,  93731050868476934u },
+  {  6366496589810271835u, 117163813585596168u }, {  3979060368631419896u,  73227383490997605u },
+  {  9585511479216662775u,  91534229363747006u }, {  2758517312166052660u, 114417786704683758u },
+  { 12671518677062341634u, 143022233380854697u }, {  1002170145522881665u,  89388895863034186u },
+  { 10476084718758377889u, 111736119828792732u }, { 13095105898447972362u, 139670149785990915u },
+  {  5878598177316288774u,  87293843616244322u }, { 16571619758500136775u, 109117304520305402u },
+  { 11491152661270395161u, 136396630650381753u }, {   264441385652915120u,  85247894156488596u },
+  {   330551732066143900u, 106559867695610745u }, {  5024875683510067779u, 133199834619513431u },
+  { 10058076329834874218u,  83249896637195894u }, {  3349223375438816964u, 104062370796494868u },
+  {  4186529219298521205u, 130077963495618585u }, { 14145795808130045513u,  81298727184761615u },
+  { 13070558741735168987u, 101623408980952019u }, { 11726512408741573330u, 127029261226190024u },
+  {  7329070255463483331u,  79393288266368765u }, { 13773023837756742068u,  99241610332960956u },
+  { 17216279797195927585u, 124052012916201195u }, {  8454331864033760789u,  77532508072625747u },
+  {  5956228811614813082u,  96915635090782184u }, {  7445286014518516353u, 121144543863477730u },
+  {  9264989777501460624u,  75715339914673581u }, { 16192923240304213684u,  94644174893341976u },
+  {  1794409976670715490u, 118305218616677471u }, {  8039035263060279037u,  73940761635423419u },
+  {  5437108060397960892u,  92425952044279274u }, { 16019757112352226923u, 115532440055349092u },
+  {   788976158365366019u,  72207775034593183u }, { 14821278253238871236u,  90259718793241478u },
+  {  9303225779693813237u, 112824648491551848u }, { 11629032224617266546u, 141030810614439810u },
+  { 11879831158813179495u,  88144256634024881u }, {  1014730893234310657u, 110180320792531102u },
+  { 10491785653397664129u, 137725400990663877u }, {  8863209042587234033u,  86078375619164923u },
+  {  6467325284806654637u, 107597969523956154u }, { 17307528642863094104u, 134497461904945192u },
+  { 10817205401789433815u,  84060913690590745u }, { 18133192770664180173u, 105076142113238431u },
+  { 18054804944902837312u, 131345177641548039u }, { 18201782118205355176u,  82090736025967524u },
+  {  4305483574047142354u, 102613420032459406u }, { 14605226504413703751u, 128266775040574257u },
+  {  2210737537617482988u,  80166734400358911u }, { 16598479977304017447u, 100208418000448638u },
+  { 11524727934775246001u, 125260522500560798u }, {  2591268940807140847u,  78287826562850499u },
+  { 17074144231291089770u,  97859783203563123u }, { 16730994270686474309u, 122324729004453904u },
+  { 10456871419179046443u,  76452955627783690u }, {  3847717237119032246u,  95566194534729613u },
+  {  9421332564826178211u, 119457743168412016u }, {  5888332853016361382u,  74661089480257510u },
+  { 16583788103125227536u,  93326361850321887u }, { 16118049110479146516u, 116657952312902359u },
+  { 16991309721690548428u,  72911220195563974u }, { 12015765115258409727u,  91139025244454968u },
+  { 15019706394073012159u, 113923781555568710u }, {  9551260955736489391u, 142404726944460888u },
+  {  5969538097335305869u,  89002954340288055u }, {  2850236603241744433u, 111253692925360069u }
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_D2S_FULL_TABLE_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/d2s_intrinsics.h b/app/src/main/cpp/libcxx/src/include/ryu/d2s_intrinsics.h
new file mode 100644
index 0000000..762763f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/d2s_intrinsics.h
@@ -0,0 +1,260 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_DS2_INTRINSICS_H
+#define _LIBCPP_SRC_INCLUDE_RYU_DS2_INTRINSICS_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__assert>
+#include <__config>
+
+#include "include/ryu/ryu.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if defined(_M_X64) && defined(_MSC_VER)
+#define _LIBCPP_INTRINSIC128 1
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __ryu_umul128(const uint64_t __a, const uint64_t __b, uint64_t* const __productHi) {
+  return _umul128(__a, __b, __productHi);
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __ryu_shiftright128(const uint64_t __lo, const uint64_t __hi, const uint32_t __dist) {
+  // For the __shiftright128 intrinsic, the shift value is always
+  // modulo 64.
+  // In the current implementation of the double-precision version
+  // of Ryu, the shift value is always < 64.
+  // (The shift value is in the range [49, 58].)
+  // Check this here in case a future change requires larger shift
+  // values. In this case this function needs to be adjusted.
+  _LIBCPP_ASSERT(__dist < 64, "");
+  return __shiftright128(__lo, __hi, static_cast<unsigned char>(__dist));
+}
+
+// ^^^ intrinsics available ^^^ / vvv __int128 available vvv
+#elif defined(__SIZEOF_INT128__) && ( \
+    (defined(__clang__) && !defined(_MSC_VER)) || \
+    (defined(__GNUC__) && !defined(__clang__) && !defined(__CUDACC__)))
+#define _LIBCPP_INTRINSIC128 1
+  // We have __uint128 support in clang or gcc
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __ryu_umul128(const uint64_t __a, const uint64_t __b, uint64_t* const __productHi) {
+  auto __temp = __a * (unsigned __int128)__b;
+  *__productHi = __temp >> 64;
+  return static_cast<uint64_t>(__temp);
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __ryu_shiftright128(const uint64_t __lo, const uint64_t __hi, const uint32_t __dist) {
+  // In the current implementation of the double-precision version
+  // of Ryu, the shift value is always < 64.
+  // (The shift value is in the range [49, 58].)
+  // Check this here in case a future change requires larger shift
+  // values. In this case this function needs to be adjusted.
+  _LIBCPP_ASSERT(__dist < 64, "");
+  auto __temp = __lo | ((unsigned __int128)__hi << 64);
+  // For x64 128-bit shfits using the `shrd` instruction and two 64-bit
+  // registers, the shift value is modulo 64.  Thus the `& 63` is free.
+  return static_cast<uint64_t>(__temp >> (__dist & 63));
+}
+#else // ^^^ __int128 available ^^^ / vvv intrinsics unavailable vvv
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_ALWAYS_INLINE uint64_t __ryu_umul128(const uint64_t __a, const uint64_t __b, uint64_t* const __productHi) {
+  // TRANSITION, VSO-634761
+  // The casts here help MSVC to avoid calls to the __allmul library function.
+  const uint32_t __aLo = static_cast<uint32_t>(__a);
+  const uint32_t __aHi = static_cast<uint32_t>(__a >> 32);
+  const uint32_t __bLo = static_cast<uint32_t>(__b);
+  const uint32_t __bHi = static_cast<uint32_t>(__b >> 32);
+
+  const uint64_t __b00 = static_cast<uint64_t>(__aLo) * __bLo;
+  const uint64_t __b01 = static_cast<uint64_t>(__aLo) * __bHi;
+  const uint64_t __b10 = static_cast<uint64_t>(__aHi) * __bLo;
+  const uint64_t __b11 = static_cast<uint64_t>(__aHi) * __bHi;
+
+  const uint32_t __b00Lo = static_cast<uint32_t>(__b00);
+  const uint32_t __b00Hi = static_cast<uint32_t>(__b00 >> 32);
+
+  const uint64_t __mid1 = __b10 + __b00Hi;
+  const uint32_t __mid1Lo = static_cast<uint32_t>(__mid1);
+  const uint32_t __mid1Hi = static_cast<uint32_t>(__mid1 >> 32);
+
+  const uint64_t __mid2 = __b01 + __mid1Lo;
+  const uint32_t __mid2Lo = static_cast<uint32_t>(__mid2);
+  const uint32_t __mid2Hi = static_cast<uint32_t>(__mid2 >> 32);
+
+  const uint64_t __pHi = __b11 + __mid1Hi + __mid2Hi;
+  const uint64_t __pLo = (static_cast<uint64_t>(__mid2Lo) << 32) | __b00Lo;
+
+  *__productHi = __pHi;
+  return __pLo;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __ryu_shiftright128(const uint64_t __lo, const uint64_t __hi, const uint32_t __dist) {
+  // We don't need to handle the case __dist >= 64 here (see above).
+  _LIBCPP_ASSERT(__dist < 64, "");
+#ifdef _LIBCPP_64_BIT
+  _LIBCPP_ASSERT(__dist > 0, "");
+  return (__hi << (64 - __dist)) | (__lo >> __dist);
+#else // ^^^ 64-bit ^^^ / vvv 32-bit vvv
+  // Avoid a 64-bit shift by taking advantage of the range of shift values.
+  _LIBCPP_ASSERT(__dist >= 32, "");
+  return (__hi << (64 - __dist)) | (static_cast<uint32_t>(__lo >> 32) >> (__dist - 32));
+#endif // ^^^ 32-bit ^^^
+}
+
+#endif // ^^^ intrinsics unavailable ^^^
+
+#ifndef _LIBCPP_64_BIT
+
+// Returns the high 64 bits of the 128-bit product of __a and __b.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __umulh(const uint64_t __a, const uint64_t __b) {
+  // Reuse the __ryu_umul128 implementation.
+  // Optimizers will likely eliminate the instructions used to compute the
+  // low part of the product.
+  uint64_t __hi;
+  (void) __ryu_umul128(__a, __b, &__hi);
+  return __hi;
+}
+
+// On 32-bit platforms, compilers typically generate calls to library
+// functions for 64-bit divisions, even if the divisor is a constant.
+//
+// TRANSITION, LLVM-37932
+//
+// The functions here perform division-by-constant using multiplications
+// in the same way as 64-bit compilers would do.
+//
+// NB:
+// The multipliers and shift values are the ones generated by clang x64
+// for expressions like x/5, x/10, etc.
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div5(const uint64_t __x) {
+  return __umulh(__x, 0xCCCCCCCCCCCCCCCDu) >> 2;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div10(const uint64_t __x) {
+  return __umulh(__x, 0xCCCCCCCCCCCCCCCDu) >> 3;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div100(const uint64_t __x) {
+  return __umulh(__x >> 2, 0x28F5C28F5C28F5C3u) >> 2;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div1e8(const uint64_t __x) {
+  return __umulh(__x, 0xABCC77118461CEFDu) >> 26;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div1e9(const uint64_t __x) {
+  return __umulh(__x >> 9, 0x44B82FA09B5A53u) >> 11;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __mod1e9(const uint64_t __x) {
+  // Avoid 64-bit math as much as possible.
+  // Returning static_cast<uint32_t>(__x - 1000000000 * __div1e9(__x)) would
+  // perform 32x64-bit multiplication and 64-bit subtraction.
+  // __x and 1000000000 * __div1e9(__x) are guaranteed to differ by
+  // less than 10^9, so their highest 32 bits must be identical,
+  // so we can truncate both sides to uint32_t before subtracting.
+  // We can also simplify static_cast<uint32_t>(1000000000 * __div1e9(__x)).
+  // We can truncate before multiplying instead of after, as multiplying
+  // the highest 32 bits of __div1e9(__x) can't affect the lowest 32 bits.
+  return static_cast<uint32_t>(__x) - 1000000000 * static_cast<uint32_t>(__div1e9(__x));
+}
+
+#else // ^^^ 32-bit ^^^ / vvv 64-bit vvv
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div5(const uint64_t __x) {
+  return __x / 5;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div10(const uint64_t __x) {
+  return __x / 10;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div100(const uint64_t __x) {
+  return __x / 100;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div1e8(const uint64_t __x) {
+  return __x / 100000000;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __div1e9(const uint64_t __x) {
+  return __x / 1000000000;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __mod1e9(const uint64_t __x) {
+  return static_cast<uint32_t>(__x - 1000000000 * __div1e9(__x));
+}
+
+#endif // ^^^ 64-bit ^^^
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __pow5Factor(uint64_t __value) {
+  uint32_t __count = 0;
+  for (;;) {
+    _LIBCPP_ASSERT(__value != 0, "");
+    const uint64_t __q = __div5(__value);
+    const uint32_t __r = static_cast<uint32_t>(__value) - 5 * static_cast<uint32_t>(__q);
+    if (__r != 0) {
+      break;
+    }
+    __value = __q;
+    ++__count;
+  }
+  return __count;
+}
+
+// Returns true if __value is divisible by 5^__p.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline bool __multipleOfPowerOf5(const uint64_t __value, const uint32_t __p) {
+  // I tried a case distinction on __p, but there was no performance difference.
+  return __pow5Factor(__value) >= __p;
+}
+
+// Returns true if __value is divisible by 2^__p.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline bool __multipleOfPowerOf2(const uint64_t __value, const uint32_t __p) {
+  _LIBCPP_ASSERT(__value != 0, "");
+  _LIBCPP_ASSERT(__p < 64, "");
+  // __builtin_ctzll doesn't appear to be faster here.
+  return (__value & ((1ull << __p) - 1)) == 0;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_DS2_INTRINSICS_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/digit_table.h b/app/src/main/cpp/libcxx/src/include/ryu/digit_table.h
new file mode 100644
index 0000000..bf660b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/digit_table.h
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_DIGIT_TABLE_H
+#define _LIBCPP_SRC_INCLUDE_RYU_DIGIT_TABLE_H
+
+#include <__charconv/tables.h>
+#include <__config>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// A table of all two-digit numbers. This is used to speed up decimal digit
+// generation by copying pairs of digits into the final output.
+//
+// In order to minimize the diff in the Ryu code between MSVC STL and libc++
+// the code uses the name __DIGIT_TABLE. In order to avoid code duplication it
+// reuses the table already available in libc++.
+inline constexpr auto& __DIGIT_TABLE = __itoa::__digits_base_10;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_DIGIT_TABLE_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/f2s.h b/app/src/main/cpp/libcxx/src/include/ryu/f2s.h
new file mode 100644
index 0000000..be304c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/f2s.h
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_FS2_H
+#define _LIBCPP_SRC_INCLUDE_RYU_FS2_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__config>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+[[nodiscard]] to_chars_result __f2s_buffered_n(char* const _First, char* const _Last, const float __f, const chars_format _Fmt);
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_FS2_H
diff --git a/app/src/main/cpp/libcxx/src/include/ryu/ryu.h b/app/src/main/cpp/libcxx/src/include/ryu/ryu.h
new file mode 100644
index 0000000..cb44bd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/ryu/ryu.h
@@ -0,0 +1,149 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#ifndef _LIBCPP_SRC_INCLUDE_RYU_RYU_H
+#define _LIBCPP_SRC_INCLUDE_RYU_RYU_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__charconv/chars_format.h>
+#include <__charconv/to_chars_result.h>
+#include <__config>
+#include <__debug>
+#include <__errc>
+#include <cstdint>
+#include <cstring>
+#include <type_traits>
+
+#include "include/ryu/f2s.h"
+#include "include/ryu/d2s.h"
+#include "include/ryu/d2fixed.h"
+
+#if defined(_MSC_VER)
+#include <intrin.h> // for _umul128(), __shiftright128(), _BitScanForward{,64}
+#endif // defined(_MSC_VER)
+
+#if defined(_WIN64) || defined(_M_AMD64) || defined(__x86_64__) ||  defined(__aarch64__)
+#define _LIBCPP_64_BIT
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// https://github.com/ulfjack/ryu/tree/59661c3/ryu
+
+#if !defined(_MSC_VER)
+_LIBCPP_HIDE_FROM_ABI inline unsigned char _BitScanForward64(unsigned long* __index, unsigned long long __mask) {
+  if (__mask == 0) {
+    return false;
+  }
+  *__index = __builtin_ctzll(__mask);
+  return true;
+}
+
+_LIBCPP_HIDE_FROM_ABI inline unsigned char _BitScanForward(unsigned long* __index, unsigned int __mask) {
+  if (__mask == 0) {
+    return false;
+  }
+  *__index = __builtin_ctz(__mask);
+  return true;
+}
+#endif  // !_MSC_VER
+
+template <class _Floating>
+[[nodiscard]] to_chars_result _Floating_to_chars_ryu(
+    char* const _First, char* const _Last, const _Floating _Value, const chars_format _Fmt) noexcept {
+    if constexpr (_IsSame<_Floating, float>::value) {
+        return __f2s_buffered_n(_First, _Last, _Value, _Fmt);
+    } else {
+        return __d2s_buffered_n(_First, _Last, _Value, _Fmt);
+    }
+}
+
+template <class _Floating>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI to_chars_result _Floating_to_chars_scientific_precision(
+    char* const _First, char* const _Last, const _Floating _Value, int _Precision) noexcept {
+
+    // C11 7.21.6.1 "The fprintf function"/5:
+    // "A negative precision argument is taken as if the precision were omitted."
+    // /8: "e,E [...] if the precision is missing, it is taken as 6"
+
+    if (_Precision < 0) {
+        _Precision = 6;
+    } else if (_Precision < 1'000'000'000) { // Match ' to fix compilation with GCC in C++11 mode
+        // _Precision is ok.
+    } else {
+        // Avoid integer overflow.
+        // (This defensive check is slightly nonconformant; it can be carefully improved in the future.)
+        return {_Last, errc::value_too_large};
+    }
+
+    return __d2exp_buffered_n(_First, _Last, _Value, static_cast<uint32_t>(_Precision));
+}
+
+template <class _Floating>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI to_chars_result _Floating_to_chars_fixed_precision(
+    char* const _First, char* const _Last, const _Floating _Value, int _Precision) noexcept {
+
+    // C11 7.21.6.1 "The fprintf function"/5:
+    // "A negative precision argument is taken as if the precision were omitted."
+    // /8: "f,F [...] If the precision is missing, it is taken as 6"
+
+    if (_Precision < 0) {
+        _Precision = 6;
+    } else if (_Precision < 1'000'000'000) { // Match ' to fix compilation with GCC in C++11 mode
+        // _Precision is ok.
+    } else {
+        // Avoid integer overflow.
+        // (This defensive check is slightly nonconformant; it can be carefully improved in the future.)
+        return {_Last, errc::value_too_large};
+    }
+
+    return __d2fixed_buffered_n(_First, _Last, _Value, static_cast<uint32_t>(_Precision));
+}
+
+#undef _LIBCPP_64_BIT
+#undef _LIBCPP_INTRINSIC128
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
+
+#endif // _LIBCPP_SRC_INCLUDE_RYU_RYU_H
diff --git a/app/src/main/cpp/libcxx/src/include/sso_allocator.h b/app/src/main/cpp/libcxx/src/include/sso_allocator.h
new file mode 100644
index 0000000..6a682fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/sso_allocator.h
@@ -0,0 +1,82 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_SSO_ALLOCATOR_H
+#define _LIBCPP_SSO_ALLOCATOR_H
+
+#include <__config>
+#include <memory>
+#include <new>
+#include <type_traits>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp, size_t _Np> class _LIBCPP_HIDDEN __sso_allocator;
+
+template <size_t _Np>
+class _LIBCPP_HIDDEN __sso_allocator<void, _Np>
+{
+public:
+    typedef const void*       const_pointer;
+    typedef void              value_type;
+};
+
+template <class _Tp, size_t _Np>
+class _LIBCPP_HIDDEN __sso_allocator
+{
+    typename aligned_storage<sizeof(_Tp) * _Np>::type buf_;
+    bool __allocated_;
+public:
+    typedef size_t            size_type;
+    typedef _Tp*              pointer;
+    typedef _Tp               value_type;
+
+    template <class U>
+    struct rebind {
+        using other = __sso_allocator<U, _Np>;
+    };
+
+    _LIBCPP_INLINE_VISIBILITY __sso_allocator() throw() : __allocated_(false) {}
+    _LIBCPP_INLINE_VISIBILITY __sso_allocator(const __sso_allocator&) throw() : __allocated_(false) {}
+    template <class _Up> _LIBCPP_INLINE_VISIBILITY __sso_allocator(const __sso_allocator<_Up, _Np>&) throw()
+         : __allocated_(false) {}
+private:
+    __sso_allocator& operator=(const __sso_allocator&);
+public:
+    _LIBCPP_INLINE_VISIBILITY pointer allocate(size_type __n, typename __sso_allocator<void, _Np>::const_pointer = nullptr)
+    {
+        if (!__allocated_ && __n <= _Np)
+        {
+            __allocated_ = true;
+            return (pointer)&buf_;
+        }
+        return allocator<_Tp>().allocate(__n);
+    }
+    _LIBCPP_INLINE_VISIBILITY void deallocate(pointer __p, size_type __n)
+    {
+        if (__p == (pointer)&buf_)
+            __allocated_ = false;
+        else
+            allocator<_Tp>().deallocate(__p, __n);
+    }
+    _LIBCPP_INLINE_VISIBILITY size_type max_size() const throw() {return size_type(~0) / sizeof(_Tp);}
+
+    _LIBCPP_INLINE_VISIBILITY
+    bool operator==(const __sso_allocator& __a) const {return &buf_ == &__a.buf_;}
+    _LIBCPP_INLINE_VISIBILITY
+    bool operator!=(const __sso_allocator& __a) const {return &buf_ != &__a.buf_;}
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_SSO_ALLOCATOR_H
diff --git a/app/src/main/cpp/libcxx/src/include/to_chars_floating_point.h b/app/src/main/cpp/libcxx/src/include/to_chars_floating_point.h
new file mode 100644
index 0000000..b99d790
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/include/to_chars_floating_point.h
@@ -0,0 +1,1079 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// This implementation is dedicated to the memory of Mary and Thavatchai.
+
+#ifndef _LIBCPP_SRC_INCLUDE_TO_CHARS_FLOATING_POINT_H
+#define _LIBCPP_SRC_INCLUDE_TO_CHARS_FLOATING_POINT_H
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__algorithm/find.h>
+#include <__algorithm/find_if.h>
+#include <__algorithm/lower_bound.h>
+#include <__algorithm/min.h>
+#include <__assert>
+#include <__config>
+#include <__functional/operations.h>
+#include <__iterator/access.h>
+#include <__iterator/size.h>
+#include <bit>
+#include <cfloat>
+#include <climits>
+
+#include "include/ryu/ryu.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace __itoa {
+inline constexpr char _Charconv_digits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e',
+    'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};
+static_assert(_VSTD::size(_Charconv_digits) == 36);
+} // __itoa
+
+// vvvvvvvvvv DERIVED FROM corecrt_internal_fltintrn.h vvvvvvvvvv
+
+template <class _FloatingType>
+struct _Floating_type_traits;
+
+template <>
+struct _Floating_type_traits<float> {
+    static constexpr int32_t _Mantissa_bits = FLT_MANT_DIG;
+    static constexpr int32_t _Exponent_bits = sizeof(float) * CHAR_BIT - FLT_MANT_DIG;
+
+    static constexpr int32_t _Maximum_binary_exponent = FLT_MAX_EXP - 1;
+    static constexpr int32_t _Minimum_binary_exponent = FLT_MIN_EXP - 1;
+
+    static constexpr int32_t _Exponent_bias = 127;
+
+    static constexpr int32_t _Sign_shift     = _Exponent_bits + _Mantissa_bits - 1;
+    static constexpr int32_t _Exponent_shift = _Mantissa_bits - 1;
+
+    using _Uint_type = uint32_t;
+
+    static constexpr uint32_t _Exponent_mask             = (1u << _Exponent_bits) - 1;
+    static constexpr uint32_t _Normal_mantissa_mask      = (1u << _Mantissa_bits) - 1;
+    static constexpr uint32_t _Denormal_mantissa_mask    = (1u << (_Mantissa_bits - 1)) - 1;
+    static constexpr uint32_t _Special_nan_mantissa_mask = 1u << (_Mantissa_bits - 2);
+    static constexpr uint32_t _Shifted_sign_mask         = 1u << _Sign_shift;
+    static constexpr uint32_t _Shifted_exponent_mask     = _Exponent_mask << _Exponent_shift;
+};
+
+template <>
+struct _Floating_type_traits<double> {
+    static constexpr int32_t _Mantissa_bits = DBL_MANT_DIG;
+    static constexpr int32_t _Exponent_bits = sizeof(double) * CHAR_BIT - DBL_MANT_DIG;
+
+    static constexpr int32_t _Maximum_binary_exponent = DBL_MAX_EXP - 1;
+    static constexpr int32_t _Minimum_binary_exponent = DBL_MIN_EXP - 1;
+
+    static constexpr int32_t _Exponent_bias = 1023;
+
+    static constexpr int32_t _Sign_shift     = _Exponent_bits + _Mantissa_bits - 1;
+    static constexpr int32_t _Exponent_shift = _Mantissa_bits - 1;
+
+    using _Uint_type = uint64_t;
+
+    static constexpr uint64_t _Exponent_mask             = (1ULL << _Exponent_bits) - 1;
+    static constexpr uint64_t _Normal_mantissa_mask      = (1ULL << _Mantissa_bits) - 1;
+    static constexpr uint64_t _Denormal_mantissa_mask    = (1ULL << (_Mantissa_bits - 1)) - 1;
+    static constexpr uint64_t _Special_nan_mantissa_mask = 1ULL << (_Mantissa_bits - 2);
+    static constexpr uint64_t _Shifted_sign_mask         = 1ULL << _Sign_shift;
+    static constexpr uint64_t _Shifted_exponent_mask     = _Exponent_mask << _Exponent_shift;
+};
+
+// ^^^^^^^^^^ DERIVED FROM corecrt_internal_fltintrn.h ^^^^^^^^^^
+
+// FUNCTION to_chars (FLOATING-POINT TO STRING)
+template <class _Floating>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI
+to_chars_result _Floating_to_chars_hex_precision(
+    char* _First, char* const _Last, const _Floating _Value, int _Precision) noexcept {
+
+    // * Determine the effective _Precision.
+    // * Later, we'll decrement _Precision when printing each hexit after the decimal point.
+
+    // The hexits after the decimal point correspond to the explicitly stored fraction bits.
+    // float explicitly stores 23 fraction bits. 23 / 4 == 5.75, which is 6 hexits.
+    // double explicitly stores 52 fraction bits. 52 / 4 == 13, which is 13 hexits.
+    constexpr int _Full_precision         = _IsSame<_Floating, float>::value ? 6 : 13;
+    constexpr int _Adjusted_explicit_bits = _Full_precision * 4;
+
+    if (_Precision < 0) {
+        // C11 7.21.6.1 "The fprintf function"/5: "A negative precision argument is taken as if the precision were
+        // omitted." /8: "if the precision is missing and FLT_RADIX is a power of 2, then the precision is sufficient
+        // for an exact representation of the value"
+        _Precision = _Full_precision;
+    }
+
+    // * Extract the _Ieee_mantissa and _Ieee_exponent.
+    using _Traits    = _Floating_type_traits<_Floating>;
+    using _Uint_type = typename _Traits::_Uint_type;
+
+    const _Uint_type _Uint_value    = _VSTD::bit_cast<_Uint_type>(_Value);
+    const _Uint_type _Ieee_mantissa = _Uint_value & _Traits::_Denormal_mantissa_mask;
+    const int32_t _Ieee_exponent    = static_cast<int32_t>(_Uint_value >> _Traits::_Exponent_shift);
+
+    // * Prepare the _Adjusted_mantissa. This is aligned to hexit boundaries,
+    // * with the implicit bit restored (0 for zero values and subnormal values, 1 for normal values).
+    // * Also calculate the _Unbiased_exponent. This unifies the processing of zero, subnormal, and normal values.
+    _Uint_type _Adjusted_mantissa;
+
+    if constexpr (_IsSame<_Floating, float>::value) {
+        _Adjusted_mantissa = _Ieee_mantissa << 1; // align to hexit boundary (23 isn't divisible by 4)
+    } else {
+        _Adjusted_mantissa = _Ieee_mantissa; // already aligned (52 is divisible by 4)
+    }
+
+    int32_t _Unbiased_exponent;
+
+    if (_Ieee_exponent == 0) { // zero or subnormal
+        // implicit bit is 0
+
+        if (_Ieee_mantissa == 0) { // zero
+            // C11 7.21.6.1 "The fprintf function"/8: "If the value is zero, the exponent is zero."
+            _Unbiased_exponent = 0;
+        } else { // subnormal
+            _Unbiased_exponent = 1 - _Traits::_Exponent_bias;
+        }
+    } else { // normal
+        _Adjusted_mantissa |= _Uint_type{1} << _Adjusted_explicit_bits; // implicit bit is 1
+        _Unbiased_exponent = _Ieee_exponent - _Traits::_Exponent_bias;
+    }
+
+    // _Unbiased_exponent is within [-126, 127] for float, [-1022, 1023] for double.
+
+    // * Decompose _Unbiased_exponent into _Sign_character and _Absolute_exponent.
+    char _Sign_character;
+    uint32_t _Absolute_exponent;
+
+    if (_Unbiased_exponent < 0) {
+        _Sign_character    = '-';
+        _Absolute_exponent = static_cast<uint32_t>(-_Unbiased_exponent);
+    } else {
+        _Sign_character    = '+';
+        _Absolute_exponent = static_cast<uint32_t>(_Unbiased_exponent);
+    }
+
+    // _Absolute_exponent is within [0, 127] for float, [0, 1023] for double.
+
+    // * Perform a single bounds check.
+    {
+        int32_t _Exponent_length;
+
+        if (_Absolute_exponent < 10) {
+            _Exponent_length = 1;
+        } else if (_Absolute_exponent < 100) {
+            _Exponent_length = 2;
+        } else if constexpr (_IsSame<_Floating, float>::value) {
+            _Exponent_length = 3;
+        } else if (_Absolute_exponent < 1000) {
+            _Exponent_length = 3;
+        } else {
+            _Exponent_length = 4;
+        }
+
+        // _Precision might be enormous; avoid integer overflow by testing it separately.
+        ptrdiff_t _Buffer_size = _Last - _First;
+
+        if (_Buffer_size < _Precision) {
+            return {_Last, errc::value_too_large};
+        }
+
+        _Buffer_size -= _Precision;
+
+        const int32_t _Length_excluding_precision = 1 // leading hexit
+                                                    + static_cast<int32_t>(_Precision > 0) // possible decimal point
+                                                    // excluding `+ _Precision`, hexits after decimal point
+                                                    + 2 // "p+" or "p-"
+                                                    + _Exponent_length; // exponent
+
+        if (_Buffer_size < _Length_excluding_precision) {
+            return {_Last, errc::value_too_large};
+        }
+    }
+
+    // * Perform rounding when we've been asked to omit hexits.
+    if (_Precision < _Full_precision) {
+        // _Precision is within [0, 5] for float, [0, 12] for double.
+
+        // _Dropped_bits is within [4, 24] for float, [4, 52] for double.
+        const int _Dropped_bits = (_Full_precision - _Precision) * 4;
+
+        // Perform rounding by adding an appropriately-shifted bit.
+
+        // This can propagate carries all the way into the leading hexit. Examples:
+        // "0.ff9" rounded to a precision of 2 is "1.00".
+        // "1.ff9" rounded to a precision of 2 is "2.00".
+
+        // Note that the leading hexit participates in the rounding decision. Examples:
+        // "0.8" rounded to a precision of 0 is "0".
+        // "1.8" rounded to a precision of 0 is "2".
+
+        // Reference implementation with suboptimal codegen:
+        // bool _Should_round_up(bool _Lsb_bit, bool _Round_bit, bool _Has_tail_bits) {
+        //    // If there are no insignificant set bits, the value is exactly-representable and should not be rounded.
+        //    //
+        //    // If there are insignificant set bits, we need to round according to round_to_nearest.
+        //    // We need to handle two cases: we round up if either [1] the value is slightly greater
+        //    // than the midpoint between two exactly-representable values or [2] the value is exactly the midpoint
+        //    // between two exactly-representable values and the greater of the two is even (this is "round-to-even").
+        //    return _Round_bit && (_Has_tail_bits || _Lsb_bit);
+        //}
+        // const bool _Lsb_bit       = (_Adjusted_mantissa & (_Uint_type{1} << _Dropped_bits)) != 0;
+        // const bool _Round_bit     = (_Adjusted_mantissa & (_Uint_type{1} << (_Dropped_bits - 1))) != 0;
+        // const bool _Has_tail_bits = (_Adjusted_mantissa & ((_Uint_type{1} << (_Dropped_bits - 1)) - 1)) != 0;
+        // const bool _Should_round = _Should_round_up(_Lsb_bit, _Round_bit, _Has_tail_bits);
+        // _Adjusted_mantissa += _Uint_type{_Should_round} << _Dropped_bits;
+
+        // Example for optimized implementation: Let _Dropped_bits be 8.
+        //          Bit index: ...[8]76543210
+        // _Adjusted_mantissa: ...[L]RTTTTTTT (not depicting known details, like hexit alignment)
+        // By focusing on the bit at index _Dropped_bits, we can avoid unnecessary branching and shifting.
+
+        // Bit index: ...[8]76543210
+        //  _Lsb_bit: ...[L]RTTTTTTT
+        const _Uint_type _Lsb_bit = _Adjusted_mantissa;
+
+        //  Bit index: ...9[8]76543210
+        // _Round_bit: ...L[R]TTTTTTT0
+        const _Uint_type _Round_bit = _Adjusted_mantissa << 1;
+
+        // We can detect (without branching) whether any of the trailing bits are set.
+        // Due to _Should_round below, this computation will be used if and only if R is 1, so we can assume that here.
+        //      Bit index: ...9[8]76543210
+        //     _Round_bit: ...L[1]TTTTTTT0
+        // _Has_tail_bits: ....[H]........
+
+        // If all of the trailing bits T are 0, then `_Round_bit - 1` will produce 0 for H (due to R being 1).
+        // If any of the trailing bits T are 1, then `_Round_bit - 1` will produce 1 for H (due to R being 1).
+        const _Uint_type _Has_tail_bits = _Round_bit - 1;
+
+        // Finally, we can use _Should_round_up() logic with bitwise-AND and bitwise-OR,
+        // selecting just the bit at index _Dropped_bits. This is the appropriately-shifted bit that we want.
+        const _Uint_type _Should_round = _Round_bit & (_Has_tail_bits | _Lsb_bit) & (_Uint_type{1} << _Dropped_bits);
+
+        // This rounding technique is dedicated to the memory of Peppermint. =^..^=
+        _Adjusted_mantissa += _Should_round;
+    }
+
+    // * Print the leading hexit, then mask it away.
+    {
+        const uint32_t _Nibble = static_cast<uint32_t>(_Adjusted_mantissa >> _Adjusted_explicit_bits);
+        _LIBCPP_ASSERT(_Nibble < 3, "");
+        const char _Leading_hexit = static_cast<char>('0' + _Nibble);
+
+        *_First++ = _Leading_hexit;
+
+        constexpr _Uint_type _Mask = (_Uint_type{1} << _Adjusted_explicit_bits) - 1;
+        _Adjusted_mantissa &= _Mask;
+    }
+
+    // * Print the decimal point and trailing hexits.
+
+    // C11 7.21.6.1 "The fprintf function"/8:
+    // "if the precision is zero and the # flag is not specified, no decimal-point character appears."
+    if (_Precision > 0) {
+        *_First++ = '.';
+
+        int32_t _Number_of_bits_remaining = _Adjusted_explicit_bits; // 24 for float, 52 for double
+
+        for (;;) {
+            _LIBCPP_ASSERT(_Number_of_bits_remaining >= 4, "");
+            _LIBCPP_ASSERT(_Number_of_bits_remaining % 4 == 0, "");
+            _Number_of_bits_remaining -= 4;
+
+            const uint32_t _Nibble = static_cast<uint32_t>(_Adjusted_mantissa >> _Number_of_bits_remaining);
+            _LIBCPP_ASSERT(_Nibble < 16, "");
+            const char _Hexit = __itoa::_Charconv_digits[_Nibble];
+
+            *_First++ = _Hexit;
+
+            // _Precision is the number of hexits that still need to be printed.
+            --_Precision;
+            if (_Precision == 0) {
+                break; // We're completely done with this phase.
+            }
+            // Otherwise, we need to keep printing hexits.
+
+            if (_Number_of_bits_remaining == 0) {
+                // We've finished printing _Adjusted_mantissa, so all remaining hexits are '0'.
+                _VSTD::memset(_First, '0', static_cast<size_t>(_Precision));
+                _First += _Precision;
+                break;
+            }
+
+            // Mask away the hexit that we just printed, then keep looping.
+            // (We skip this when breaking out of the loop above, because _Adjusted_mantissa isn't used later.)
+            const _Uint_type _Mask = (_Uint_type{1} << _Number_of_bits_remaining) - 1;
+            _Adjusted_mantissa &= _Mask;
+        }
+    }
+
+    // * Print the exponent.
+
+    // C11 7.21.6.1 "The fprintf function"/8: "The exponent always contains at least one digit, and only as many more
+    // digits as necessary to represent the decimal exponent of 2."
+
+    // Performance note: We should take advantage of the known ranges of possible exponents.
+
+    *_First++ = 'p';
+    *_First++ = _Sign_character;
+
+    // We've already printed '-' if necessary, so uint32_t _Absolute_exponent avoids testing that again.
+    return _VSTD::to_chars(_First, _Last, _Absolute_exponent);
+}
+
+template <class _Floating>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI
+to_chars_result _Floating_to_chars_hex_shortest(
+    char* _First, char* const _Last, const _Floating _Value) noexcept {
+
+    // This prints "1.728p+0" instead of "2.e5p-1".
+    // This prints "0.000002p-126" instead of "1p-149" for float.
+    // This prints "0.0000000000001p-1022" instead of "1p-1074" for double.
+    // This prioritizes being consistent with printf's de facto behavior (and hex-precision's behavior)
+    // over minimizing the number of characters printed.
+
+    using _Traits    = _Floating_type_traits<_Floating>;
+    using _Uint_type = typename _Traits::_Uint_type;
+
+    const _Uint_type _Uint_value = _VSTD::bit_cast<_Uint_type>(_Value);
+
+    if (_Uint_value == 0) { // zero detected; write "0p+0" and return
+        // C11 7.21.6.1 "The fprintf function"/8: "If the value is zero, the exponent is zero."
+        // Special-casing zero is necessary because of the exponent.
+        const char* const _Str = "0p+0";
+        const size_t _Len      = 4;
+
+        if (_Last - _First < static_cast<ptrdiff_t>(_Len)) {
+            return {_Last, errc::value_too_large};
+        }
+
+        _VSTD::memcpy(_First, _Str, _Len);
+
+        return {_First + _Len, errc{}};
+    }
+
+    const _Uint_type _Ieee_mantissa = _Uint_value & _Traits::_Denormal_mantissa_mask;
+    const int32_t _Ieee_exponent    = static_cast<int32_t>(_Uint_value >> _Traits::_Exponent_shift);
+
+    char _Leading_hexit; // implicit bit
+    int32_t _Unbiased_exponent;
+
+    if (_Ieee_exponent == 0) { // subnormal
+        _Leading_hexit     = '0';
+        _Unbiased_exponent = 1 - _Traits::_Exponent_bias;
+    } else { // normal
+        _Leading_hexit     = '1';
+        _Unbiased_exponent = _Ieee_exponent - _Traits::_Exponent_bias;
+    }
+
+    // Performance note: Consider avoiding per-character bounds checking when there's plenty of space.
+
+    if (_First == _Last) {
+        return {_Last, errc::value_too_large};
+    }
+
+    *_First++ = _Leading_hexit;
+
+    if (_Ieee_mantissa == 0) {
+        // The fraction bits are all 0. Trim them away, including the decimal point.
+    } else {
+        if (_First == _Last) {
+            return {_Last, errc::value_too_large};
+        }
+
+        *_First++ = '.';
+
+        // The hexits after the decimal point correspond to the explicitly stored fraction bits.
+        // float explicitly stores 23 fraction bits. 23 / 4 == 5.75, so we'll print at most 6 hexits.
+        // double explicitly stores 52 fraction bits. 52 / 4 == 13, so we'll print at most 13 hexits.
+        _Uint_type _Adjusted_mantissa;
+        int32_t _Number_of_bits_remaining;
+
+        if constexpr (_IsSame<_Floating, float>::value) {
+            _Adjusted_mantissa        = _Ieee_mantissa << 1; // align to hexit boundary (23 isn't divisible by 4)
+            _Number_of_bits_remaining = 24; // 23 fraction bits + 1 alignment bit
+        } else {
+            _Adjusted_mantissa        = _Ieee_mantissa; // already aligned (52 is divisible by 4)
+            _Number_of_bits_remaining = 52; // 52 fraction bits
+        }
+
+        // do-while: The condition _Adjusted_mantissa != 0 is initially true - we have nonzero fraction bits and we've
+        // printed the decimal point. Each iteration, we print a hexit, mask it away, and keep looping if we still have
+        // nonzero fraction bits. If there would be trailing '0' hexits, this trims them. If there wouldn't be trailing
+        // '0' hexits, the same condition works (as we print the final hexit and mask it away); we don't need to test
+        // _Number_of_bits_remaining.
+        do {
+            _LIBCPP_ASSERT(_Number_of_bits_remaining >= 4, "");
+            _LIBCPP_ASSERT(_Number_of_bits_remaining % 4 == 0, "");
+            _Number_of_bits_remaining -= 4;
+
+            const uint32_t _Nibble = static_cast<uint32_t>(_Adjusted_mantissa >> _Number_of_bits_remaining);
+            _LIBCPP_ASSERT(_Nibble < 16, "");
+            const char _Hexit = __itoa::_Charconv_digits[_Nibble];
+
+            if (_First == _Last) {
+                return {_Last, errc::value_too_large};
+            }
+
+            *_First++ = _Hexit;
+
+            const _Uint_type _Mask = (_Uint_type{1} << _Number_of_bits_remaining) - 1;
+            _Adjusted_mantissa &= _Mask;
+
+        } while (_Adjusted_mantissa != 0);
+    }
+
+    // C11 7.21.6.1 "The fprintf function"/8: "The exponent always contains at least one digit, and only as many more
+    // digits as necessary to represent the decimal exponent of 2."
+
+    // Performance note: We should take advantage of the known ranges of possible exponents.
+
+    // float: _Unbiased_exponent is within [-126, 127].
+    // double: _Unbiased_exponent is within [-1022, 1023].
+
+    if (_Last - _First < 2) {
+        return {_Last, errc::value_too_large};
+    }
+
+    *_First++ = 'p';
+
+    if (_Unbiased_exponent < 0) {
+        *_First++          = '-';
+        _Unbiased_exponent = -_Unbiased_exponent;
+    } else {
+        *_First++ = '+';
+    }
+
+    // We've already printed '-' if necessary, so static_cast<uint32_t> avoids testing that again.
+    return _VSTD::to_chars(_First, _Last, static_cast<uint32_t>(_Unbiased_exponent));
+}
+
+// For general precision, we can use lookup tables to avoid performing trial formatting.
+
+// For a simple example, imagine counting the number of digits D in an integer, and needing to know
+// whether D is less than 3, equal to 3/4/5/6, or greater than 6. We could use a lookup table:
+// D | Largest integer with D digits
+// 2 |      99
+// 3 |     999
+// 4 |   9'999
+// 5 |  99'999
+// 6 | 999'999
+// 7 | table end
+// Looking up an integer in this table with lower_bound() will work:
+// * Too-small integers, like 7, 70, and 99, will cause lower_bound() to return the D == 2 row. (If all we care
+//   about is whether D is less than 3, then it's okay to smash the D == 1 and D == 2 cases together.)
+// * Integers in [100, 999] will cause lower_bound() to return the D == 3 row, and so forth.
+// * Too-large integers, like 1'000'000 and above, will cause lower_bound() to return the end of the table. If we
+//   compute D from that index, this will be considered D == 7, which will activate any "greater than 6" logic.
+
+// Floating-point is slightly more complicated.
+
+// The ordinary lookup tables are for X within [-5, 38] for float, and [-5, 308] for double.
+// (-5 absorbs too-negative exponents, outside the P > X >= -4 criterion. 38 and 308 are the maximum exponents.)
+// Due to the P > X condition, we can use a subset of the table for X within [-5, P - 1], suitably clamped.
+
+// When P is small, rounding can affect X. For example:
+// For P == 1, the largest double with X == 0 is: 9.4999999999999982236431605997495353221893310546875
+// For P == 2, the largest double with X == 0 is: 9.949999999999999289457264239899814128875732421875
+// For P == 3, the largest double with X == 0 is: 9.9949999999999992184029906638897955417633056640625
+
+// Exponent adjustment is a concern for P within [1, 7] for float, and [1, 15] for double (determined via
+// brute force). While larger values of P still perform rounding, they can't trigger exponent adjustment.
+// This is because only values with repeated '9' digits can undergo exponent adjustment during rounding,
+// and floating-point granularity limits the number of consecutive '9' digits that can appear.
+
+// So, we need special lookup tables for small values of P.
+// These tables have varying lengths due to the P > X >= -4 criterion. For example:
+// For P == 1, need table entries for X: -5, -4, -3, -2, -1, 0
+// For P == 2, need table entries for X: -5, -4, -3, -2, -1, 0, 1
+// For P == 3, need table entries for X: -5, -4, -3, -2, -1, 0, 1, 2
+// For P == 4, need table entries for X: -5, -4, -3, -2, -1, 0, 1, 2, 3
+
+// We can concatenate these tables for compact storage, using triangular numbers to access them.
+// The table for P begins at index (P - 1) * (P + 10) / 2 with length P + 5.
+
+// For both the ordinary and special lookup tables, after an index I is returned by lower_bound(), X is I - 5.
+
+// We need to special-case the floating-point value 0.0, which is considered to have X == 0.
+// Otherwise, the lookup tables would consider it to have a highly negative X.
+
+// Finally, because we're working with positive floating-point values,
+// representation comparisons behave identically to floating-point comparisons.
+
+// The following code generated the lookup tables for the scientific exponent X. Don't remove this code.
+#if 0
+// cl /EHsc /nologo /W4 /MT /O2 /std:c++17 generate_tables.cpp && generate_tables
+
+#include <algorithm>
+#include <assert.h>
+#include <charconv>
+#include <cmath>
+#include <limits>
+#include <map>
+#include <stdint.h>
+#include <stdio.h>
+#include <system_error>
+#include <type_traits>
+#include <vector>
+using namespace std;
+
+template <typename UInt, typename Pred>
+[[nodiscard]] UInt uint_partition_point(UInt first, const UInt last, Pred pred) {
+    // Find the beginning of the false partition in [first, last).
+    // [first, last) is partitioned when all of the true values occur before all of the false values.
+
+    static_assert(is_unsigned_v<UInt>);
+    assert(first <= last);
+
+    for (UInt n = last - first; n > 0;) {
+        const UInt n2  = n / 2;
+        const UInt mid = first + n2;
+
+        if (pred(mid)) {
+            first = mid + 1;
+            n     = n - n2 - 1;
+        } else {
+            n = n2;
+        }
+    }
+
+    return first;
+}
+
+template <typename Floating>
+[[nodiscard]] int scientific_exponent_X(const int P, const Floating flt) {
+    char buf[400]; // more than enough
+
+    // C11 7.21.6.1 "The fprintf function"/8 performs trial formatting with scientific precision P - 1.
+    const auto to_result = to_chars(buf, end(buf), flt, chars_format::scientific, P - 1);
+    assert(to_result.ec == errc{});
+
+    const char* exp_ptr = find(buf, to_result.ptr, 'e');
+    assert(exp_ptr != to_result.ptr);
+
+    ++exp_ptr; // advance past 'e'
+
+    if (*exp_ptr == '+') {
+        ++exp_ptr; // advance past '+' which from_chars() won't parse
+    }
+
+    int X;
+    const auto from_result = from_chars(exp_ptr, to_result.ptr, X);
+    assert(from_result.ec == errc{});
+    return X;
+}
+
+template <typename UInt>
+void print_table(const vector<UInt>& v, const char* const name) {
+    constexpr const char* UIntName = _IsSame<UInt, uint32_t>::value ? "uint32_t" : "uint64_t";
+
+    printf("static constexpr %s %s[%zu] = {\n", UIntName, name, v.size());
+
+    for (const auto& val : v) {
+        if constexpr (_IsSame<UInt, uint32_t>::value) {
+            printf("0x%08Xu,\n", val);
+        } else {
+            printf("0x%016llXu,\n", val);
+        }
+    }
+
+    printf("};\n");
+}
+
+enum class Mode { Tables, Tests };
+
+template <typename Floating>
+void generate_tables(const Mode mode) {
+    using Limits = numeric_limits<Floating>;
+    using UInt   = conditional_t<_IsSame<Floating, float>::value, uint32_t, uint64_t>;
+
+    map<int, map<int, UInt>> P_X_LargestValWithX;
+
+    constexpr int MaxP = Limits::max_exponent10 + 1; // MaxP performs no rounding during trial formatting
+
+    for (int P = 1; P <= MaxP; ++P) {
+        for (int X = -5; X < P; ++X) {
+            constexpr Floating first = static_cast<Floating>(9e-5); // well below 9.5e-5, otherwise arbitrary
+            constexpr Floating last  = Limits::infinity(); // one bit above Limits::max()
+
+            const UInt val_beyond_X = uint_partition_point(reinterpret_cast<const UInt&>(first),
+                reinterpret_cast<const UInt&>(last),
+                [P, X](const UInt u) { return scientific_exponent_X(P, reinterpret_cast<const Floating&>(u)) <= X; });
+
+            P_X_LargestValWithX[P][X] = val_beyond_X - 1;
+        }
+    }
+
+    constexpr const char* FloatingName = _IsSame<Floating, float>::value ? "float" : "double";
+
+    constexpr int MaxSpecialP = _IsSame<Floating, float>::value ? 7 : 15; // MaxSpecialP is affected by exponent adjustment
+
+    if (mode == Mode::Tables) {
+        printf("template <>\n");
+        printf("struct _General_precision_tables<%s> {\n", FloatingName);
+
+        printf("static constexpr int _Max_special_P = %d;\n", MaxSpecialP);
+
+        vector<UInt> special;
+
+        for (int P = 1; P <= MaxSpecialP; ++P) {
+            for (int X = -5; X < P; ++X) {
+                const UInt val = P_X_LargestValWithX[P][X];
+                special.push_back(val);
+            }
+        }
+
+        print_table(special, "_Special_X_table");
+
+        for (int P = MaxSpecialP + 1; P < MaxP; ++P) {
+            for (int X = -5; X < P; ++X) {
+                const UInt val = P_X_LargestValWithX[P][X];
+                assert(val == P_X_LargestValWithX[MaxP][X]);
+            }
+        }
+
+        printf("static constexpr int _Max_P = %d;\n", MaxP);
+
+        vector<UInt> ordinary;
+
+        for (int X = -5; X < MaxP; ++X) {
+            const UInt val = P_X_LargestValWithX[MaxP][X];
+            ordinary.push_back(val);
+        }
+
+        print_table(ordinary, "_Ordinary_X_table");
+
+        printf("};\n");
+    } else {
+        printf("==========\n");
+        printf("Test cases for %s:\n", FloatingName);
+
+        constexpr int Hexits         = _IsSame<Floating, float>::value ? 6 : 13;
+        constexpr const char* Suffix = _IsSame<Floating, float>::value ? "f" : "";
+
+        for (int P = 1; P <= MaxP; ++P) {
+            for (int X = -5; X < P; ++X) {
+                if (P <= MaxSpecialP || P == 25 || P == MaxP || X == P - 1) {
+                    const UInt val1   = P_X_LargestValWithX[P][X];
+                    const Floating f1 = reinterpret_cast<const Floating&>(val1);
+                    const UInt val2   = val1 + 1;
+                    const Floating f2 = reinterpret_cast<const Floating&>(val2);
+
+                    printf("{%.*a%s, chars_format::general, %d, \"%.*g\"},\n", Hexits, f1, Suffix, P, P, f1);
+                    if (isfinite(f2)) {
+                        printf("{%.*a%s, chars_format::general, %d, \"%.*g\"},\n", Hexits, f2, Suffix, P, P, f2);
+                    }
+                }
+            }
+        }
+    }
+}
+
+int main() {
+    printf("template <class _Floating>\n");
+    printf("struct _General_precision_tables;\n");
+    generate_tables<float>(Mode::Tables);
+    generate_tables<double>(Mode::Tables);
+    generate_tables<float>(Mode::Tests);
+    generate_tables<double>(Mode::Tests);
+}
+#endif // 0
+
+template <class _Floating>
+struct _General_precision_tables;
+
+template <>
+struct _General_precision_tables<float> {
+    static constexpr int _Max_special_P = 7;
+
+    static constexpr uint32_t _Special_X_table[63] = {0x38C73ABCu, 0x3A79096Bu, 0x3C1BA5E3u, 0x3DC28F5Cu, 0x3F733333u,
+        0x4117FFFFu, 0x38D0AAA7u, 0x3A826AA8u, 0x3C230553u, 0x3DCBC6A7u, 0x3F7EB851u, 0x411F3333u, 0x42C6FFFFu,
+        0x38D19C3Fu, 0x3A8301A7u, 0x3C23C211u, 0x3DCCB295u, 0x3F7FDF3Bu, 0x411FEB85u, 0x42C7E666u, 0x4479DFFFu,
+        0x38D1B468u, 0x3A8310C1u, 0x3C23D4F1u, 0x3DCCCA2Du, 0x3F7FFCB9u, 0x411FFDF3u, 0x42C7FD70u, 0x4479FCCCu,
+        0x461C3DFFu, 0x38D1B6D2u, 0x3A831243u, 0x3C23D6D4u, 0x3DCCCC89u, 0x3F7FFFACu, 0x411FFFCBu, 0x42C7FFBEu,
+        0x4479FFAEu, 0x461C3FCCu, 0x47C34FBFu, 0x38D1B710u, 0x3A83126Au, 0x3C23D704u, 0x3DCCCCC6u, 0x3F7FFFF7u,
+        0x411FFFFAu, 0x42C7FFF9u, 0x4479FFF7u, 0x461C3FFAu, 0x47C34FF9u, 0x497423F7u, 0x38D1B716u, 0x3A83126Eu,
+        0x3C23D709u, 0x3DCCCCCCu, 0x3F7FFFFFu, 0x411FFFFFu, 0x42C7FFFFu, 0x4479FFFFu, 0x461C3FFFu, 0x47C34FFFu,
+        0x497423FFu, 0x4B18967Fu};
+
+    static constexpr int _Max_P = 39;
+
+    static constexpr uint32_t _Ordinary_X_table[44] = {0x38D1B717u, 0x3A83126Eu, 0x3C23D70Au, 0x3DCCCCCCu, 0x3F7FFFFFu,
+        0x411FFFFFu, 0x42C7FFFFu, 0x4479FFFFu, 0x461C3FFFu, 0x47C34FFFu, 0x497423FFu, 0x4B18967Fu, 0x4CBEBC1Fu,
+        0x4E6E6B27u, 0x501502F8u, 0x51BA43B7u, 0x5368D4A5u, 0x551184E7u, 0x56B5E620u, 0x58635FA9u, 0x5A0E1BC9u,
+        0x5BB1A2BCu, 0x5D5E0B6Bu, 0x5F0AC723u, 0x60AD78EBu, 0x6258D726u, 0x64078678u, 0x65A96816u, 0x6753C21Bu,
+        0x69045951u, 0x6AA56FA5u, 0x6C4ECB8Fu, 0x6E013F39u, 0x6FA18F07u, 0x7149F2C9u, 0x72FC6F7Cu, 0x749DC5ADu,
+        0x76453719u, 0x77F684DFu, 0x799A130Bu, 0x7B4097CEu, 0x7CF0BDC2u, 0x7E967699u, 0x7F7FFFFFu};
+};
+
+template <>
+struct _General_precision_tables<double> {
+    static constexpr int _Max_special_P = 15;
+
+    static constexpr uint64_t _Special_X_table[195] = {0x3F18E757928E0C9Du, 0x3F4F212D77318FC5u, 0x3F8374BC6A7EF9DBu,
+        0x3FB851EB851EB851u, 0x3FEE666666666666u, 0x4022FFFFFFFFFFFFu, 0x3F1A1554FBDAD751u, 0x3F504D551D68C692u,
+        0x3F8460AA64C2F837u, 0x3FB978D4FDF3B645u, 0x3FEFD70A3D70A3D7u, 0x4023E66666666666u, 0x4058DFFFFFFFFFFFu,
+        0x3F1A3387ECC8EB96u, 0x3F506034F3FD933Eu, 0x3F84784230FCF80Du, 0x3FB99652BD3C3611u, 0x3FEFFBE76C8B4395u,
+        0x4023FD70A3D70A3Du, 0x4058FCCCCCCCCCCCu, 0x408F3BFFFFFFFFFFu, 0x3F1A368D04E0BA6Au, 0x3F506218230C7482u,
+        0x3F847A9E2BCF91A3u, 0x3FB99945B6C3760Bu, 0x3FEFFF972474538Eu, 0x4023FFBE76C8B439u, 0x4058FFAE147AE147u,
+        0x408F3F9999999999u, 0x40C387BFFFFFFFFFu, 0x3F1A36DA54164F19u, 0x3F506248748DF16Fu, 0x3F847ADA91B16DCBu,
+        0x3FB99991361DC93Eu, 0x3FEFFFF583A53B8Eu, 0x4023FFF972474538u, 0x4058FFF7CED91687u, 0x408F3FF5C28F5C28u,
+        0x40C387F999999999u, 0x40F869F7FFFFFFFFu, 0x3F1A36E20F35445Du, 0x3F50624D49814ABAu, 0x3F847AE09BE19D69u,
+        0x3FB99998C2DA04C3u, 0x3FEFFFFEF39085F4u, 0x4023FFFF583A53B8u, 0x4058FFFF2E48E8A7u, 0x408F3FFEF9DB22D0u,
+        0x40C387FF5C28F5C2u, 0x40F869FF33333333u, 0x412E847EFFFFFFFFu, 0x3F1A36E2D51EC34Bu, 0x3F50624DC5333A0Eu,
+        0x3F847AE136800892u, 0x3FB9999984200AB7u, 0x3FEFFFFFE5280D65u, 0x4023FFFFEF39085Fu, 0x4058FFFFEB074A77u,
+        0x408F3FFFE5C91D14u, 0x40C387FFEF9DB22Du, 0x40F869FFEB851EB8u, 0x412E847FE6666666u, 0x416312CFEFFFFFFFu,
+        0x3F1A36E2E8E94FFCu, 0x3F50624DD191D1FDu, 0x3F847AE145F6467Du, 0x3FB999999773D81Cu, 0x3FEFFFFFFD50CE23u,
+        0x4023FFFFFE5280D6u, 0x4058FFFFFDE7210Bu, 0x408F3FFFFD60E94Eu, 0x40C387FFFE5C91D1u, 0x40F869FFFDF3B645u,
+        0x412E847FFD70A3D7u, 0x416312CFFE666666u, 0x4197D783FDFFFFFFu, 0x3F1A36E2EAE3F7A7u, 0x3F50624DD2CE7AC8u,
+        0x3F847AE14782197Bu, 0x3FB9999999629FD9u, 0x3FEFFFFFFFBB47D0u, 0x4023FFFFFFD50CE2u, 0x4058FFFFFFCA501Au,
+        0x408F3FFFFFBCE421u, 0x40C387FFFFD60E94u, 0x40F869FFFFCB923Au, 0x412E847FFFBE76C8u, 0x416312CFFFD70A3Du,
+        0x4197D783FFCCCCCCu, 0x41CDCD64FFBFFFFFu, 0x3F1A36E2EB16A205u, 0x3F50624DD2EE2543u, 0x3F847AE147A9AE94u,
+        0x3FB9999999941A39u, 0x3FEFFFFFFFF920C8u, 0x4023FFFFFFFBB47Du, 0x4058FFFFFFFAA19Cu, 0x408F3FFFFFF94A03u,
+        0x40C387FFFFFBCE42u, 0x40F869FFFFFAC1D2u, 0x412E847FFFF97247u, 0x416312CFFFFBE76Cu, 0x4197D783FFFAE147u,
+        0x41CDCD64FFF99999u, 0x4202A05F1FFBFFFFu, 0x3F1A36E2EB1BB30Fu, 0x3F50624DD2F14FE9u, 0x3F847AE147ADA3E3u,
+        0x3FB9999999990CDCu, 0x3FEFFFFFFFFF5014u, 0x4023FFFFFFFF920Cu, 0x4058FFFFFFFF768Fu, 0x408F3FFFFFFF5433u,
+        0x40C387FFFFFF94A0u, 0x40F869FFFFFF79C8u, 0x412E847FFFFF583Au, 0x416312CFFFFF9724u, 0x4197D783FFFF7CEDu,
+        0x41CDCD64FFFF5C28u, 0x4202A05F1FFF9999u, 0x42374876E7FF7FFFu, 0x3F1A36E2EB1C34C3u, 0x3F50624DD2F1A0FAu,
+        0x3F847AE147AE0938u, 0x3FB9999999998B86u, 0x3FEFFFFFFFFFEE68u, 0x4023FFFFFFFFF501u, 0x4058FFFFFFFFF241u,
+        0x408F3FFFFFFFEED1u, 0x40C387FFFFFFF543u, 0x40F869FFFFFFF294u, 0x412E847FFFFFEF39u, 0x416312CFFFFFF583u,
+        0x4197D783FFFFF2E4u, 0x41CDCD64FFFFEF9Du, 0x4202A05F1FFFF5C2u, 0x42374876E7FFF333u, 0x426D1A94A1FFEFFFu,
+        0x3F1A36E2EB1C41BBu, 0x3F50624DD2F1A915u, 0x3F847AE147AE135Au, 0x3FB9999999999831u, 0x3FEFFFFFFFFFFE3Du,
+        0x4023FFFFFFFFFEE6u, 0x4058FFFFFFFFFEA0u, 0x408F3FFFFFFFFE48u, 0x40C387FFFFFFFEEDu, 0x40F869FFFFFFFEA8u,
+        0x412E847FFFFFFE52u, 0x416312CFFFFFFEF3u, 0x4197D783FFFFFEB0u, 0x41CDCD64FFFFFE5Cu, 0x4202A05F1FFFFEF9u,
+        0x42374876E7FFFEB8u, 0x426D1A94A1FFFE66u, 0x42A2309CE53FFEFFu, 0x3F1A36E2EB1C4307u, 0x3F50624DD2F1A9E4u,
+        0x3F847AE147AE145Eu, 0x3FB9999999999975u, 0x3FEFFFFFFFFFFFD2u, 0x4023FFFFFFFFFFE3u, 0x4058FFFFFFFFFFDCu,
+        0x408F3FFFFFFFFFD4u, 0x40C387FFFFFFFFE4u, 0x40F869FFFFFFFFDDu, 0x412E847FFFFFFFD5u, 0x416312CFFFFFFFE5u,
+        0x4197D783FFFFFFDEu, 0x41CDCD64FFFFFFD6u, 0x4202A05F1FFFFFE5u, 0x42374876E7FFFFDFu, 0x426D1A94A1FFFFD7u,
+        0x42A2309CE53FFFE6u, 0x42D6BCC41E8FFFDFu, 0x3F1A36E2EB1C4328u, 0x3F50624DD2F1A9F9u, 0x3F847AE147AE1477u,
+        0x3FB9999999999995u, 0x3FEFFFFFFFFFFFFBu, 0x4023FFFFFFFFFFFDu, 0x4058FFFFFFFFFFFCu, 0x408F3FFFFFFFFFFBu,
+        0x40C387FFFFFFFFFDu, 0x40F869FFFFFFFFFCu, 0x412E847FFFFFFFFBu, 0x416312CFFFFFFFFDu, 0x4197D783FFFFFFFCu,
+        0x41CDCD64FFFFFFFBu, 0x4202A05F1FFFFFFDu, 0x42374876E7FFFFFCu, 0x426D1A94A1FFFFFBu, 0x42A2309CE53FFFFDu,
+        0x42D6BCC41E8FFFFCu, 0x430C6BF52633FFFBu};
+
+    static constexpr int _Max_P = 309;
+
+    static constexpr uint64_t _Ordinary_X_table[314] = {0x3F1A36E2EB1C432Cu, 0x3F50624DD2F1A9FBu, 0x3F847AE147AE147Au,
+        0x3FB9999999999999u, 0x3FEFFFFFFFFFFFFFu, 0x4023FFFFFFFFFFFFu, 0x4058FFFFFFFFFFFFu, 0x408F3FFFFFFFFFFFu,
+        0x40C387FFFFFFFFFFu, 0x40F869FFFFFFFFFFu, 0x412E847FFFFFFFFFu, 0x416312CFFFFFFFFFu, 0x4197D783FFFFFFFFu,
+        0x41CDCD64FFFFFFFFu, 0x4202A05F1FFFFFFFu, 0x42374876E7FFFFFFu, 0x426D1A94A1FFFFFFu, 0x42A2309CE53FFFFFu,
+        0x42D6BCC41E8FFFFFu, 0x430C6BF52633FFFFu, 0x4341C37937E07FFFu, 0x4376345785D89FFFu, 0x43ABC16D674EC7FFu,
+        0x43E158E460913CFFu, 0x4415AF1D78B58C3Fu, 0x444B1AE4D6E2EF4Fu, 0x4480F0CF064DD591u, 0x44B52D02C7E14AF6u,
+        0x44EA784379D99DB4u, 0x45208B2A2C280290u, 0x4554ADF4B7320334u, 0x4589D971E4FE8401u, 0x45C027E72F1F1281u,
+        0x45F431E0FAE6D721u, 0x46293E5939A08CE9u, 0x465F8DEF8808B024u, 0x4693B8B5B5056E16u, 0x46C8A6E32246C99Cu,
+        0x46FED09BEAD87C03u, 0x4733426172C74D82u, 0x476812F9CF7920E2u, 0x479E17B84357691Bu, 0x47D2CED32A16A1B1u,
+        0x48078287F49C4A1Du, 0x483D6329F1C35CA4u, 0x48725DFA371A19E6u, 0x48A6F578C4E0A060u, 0x48DCB2D6F618C878u,
+        0x4911EFC659CF7D4Bu, 0x49466BB7F0435C9Eu, 0x497C06A5EC5433C6u, 0x49B18427B3B4A05Bu, 0x49E5E531A0A1C872u,
+        0x4A1B5E7E08CA3A8Fu, 0x4A511B0EC57E6499u, 0x4A8561D276DDFDC0u, 0x4ABABA4714957D30u, 0x4AF0B46C6CDD6E3Eu,
+        0x4B24E1878814C9CDu, 0x4B5A19E96A19FC40u, 0x4B905031E2503DA8u, 0x4BC4643E5AE44D12u, 0x4BF97D4DF19D6057u,
+        0x4C2FDCA16E04B86Du, 0x4C63E9E4E4C2F344u, 0x4C98E45E1DF3B015u, 0x4CCF1D75A5709C1Au, 0x4D03726987666190u,
+        0x4D384F03E93FF9F4u, 0x4D6E62C4E38FF872u, 0x4DA2FDBB0E39FB47u, 0x4DD7BD29D1C87A19u, 0x4E0DAC74463A989Fu,
+        0x4E428BC8ABE49F63u, 0x4E772EBAD6DDC73Cu, 0x4EACFA698C95390Bu, 0x4EE21C81F7DD43A7u, 0x4F16A3A275D49491u,
+        0x4F4C4C8B1349B9B5u, 0x4F81AFD6EC0E1411u, 0x4FB61BCCA7119915u, 0x4FEBA2BFD0D5FF5Bu, 0x502145B7E285BF98u,
+        0x50559725DB272F7Fu, 0x508AFCEF51F0FB5Eu, 0x50C0DE1593369D1Bu, 0x50F5159AF8044462u, 0x512A5B01B605557Au,
+        0x516078E111C3556Cu, 0x5194971956342AC7u, 0x51C9BCDFABC13579u, 0x5200160BCB58C16Cu, 0x52341B8EBE2EF1C7u,
+        0x526922726DBAAE39u, 0x529F6B0F092959C7u, 0x52D3A2E965B9D81Cu, 0x53088BA3BF284E23u, 0x533EAE8CAEF261ACu,
+        0x53732D17ED577D0Bu, 0x53A7F85DE8AD5C4Eu, 0x53DDF67562D8B362u, 0x5412BA095DC7701Du, 0x5447688BB5394C25u,
+        0x547D42AEA2879F2Eu, 0x54B249AD2594C37Cu, 0x54E6DC186EF9F45Cu, 0x551C931E8AB87173u, 0x5551DBF316B346E7u,
+        0x558652EFDC6018A1u, 0x55BBE7ABD3781ECAu, 0x55F170CB642B133Eu, 0x5625CCFE3D35D80Eu, 0x565B403DCC834E11u,
+        0x569108269FD210CBu, 0x56C54A3047C694FDu, 0x56FA9CBC59B83A3Du, 0x5730A1F5B8132466u, 0x5764CA732617ED7Fu,
+        0x5799FD0FEF9DE8DFu, 0x57D03E29F5C2B18Bu, 0x58044DB473335DEEu, 0x583961219000356Au, 0x586FB969F40042C5u,
+        0x58A3D3E2388029BBu, 0x58D8C8DAC6A0342Au, 0x590EFB1178484134u, 0x59435CEAEB2D28C0u, 0x59783425A5F872F1u,
+        0x59AE412F0F768FADu, 0x59E2E8BD69AA19CCu, 0x5A17A2ECC414A03Fu, 0x5A4D8BA7F519C84Fu, 0x5A827748F9301D31u,
+        0x5AB7151B377C247Eu, 0x5AECDA62055B2D9Du, 0x5B22087D4358FC82u, 0x5B568A9C942F3BA3u, 0x5B8C2D43B93B0A8Bu,
+        0x5BC19C4A53C4E697u, 0x5BF6035CE8B6203Du, 0x5C2B843422E3A84Cu, 0x5C6132A095CE492Fu, 0x5C957F48BB41DB7Bu,
+        0x5CCADF1AEA12525Au, 0x5D00CB70D24B7378u, 0x5D34FE4D06DE5056u, 0x5D6A3DE04895E46Cu, 0x5DA066AC2D5DAEC3u,
+        0x5DD4805738B51A74u, 0x5E09A06D06E26112u, 0x5E400444244D7CABu, 0x5E7405552D60DBD6u, 0x5EA906AA78B912CBu,
+        0x5EDF485516E7577Eu, 0x5F138D352E5096AFu, 0x5F48708279E4BC5Au, 0x5F7E8CA3185DEB71u, 0x5FB317E5EF3AB327u,
+        0x5FE7DDDF6B095FF0u, 0x601DD55745CBB7ECu, 0x6052A5568B9F52F4u, 0x60874EAC2E8727B1u, 0x60BD22573A28F19Du,
+        0x60F2357684599702u, 0x6126C2D4256FFCC2u, 0x615C73892ECBFBF3u, 0x6191C835BD3F7D78u, 0x61C63A432C8F5CD6u,
+        0x61FBC8D3F7B3340Bu, 0x62315D847AD00087u, 0x6265B4E5998400A9u, 0x629B221EFFE500D3u, 0x62D0F5535FEF2084u,
+        0x630532A837EAE8A5u, 0x633A7F5245E5A2CEu, 0x63708F936BAF85C1u, 0x63A4B378469B6731u, 0x63D9E056584240FDu,
+        0x64102C35F729689Eu, 0x6444374374F3C2C6u, 0x647945145230B377u, 0x64AF965966BCE055u, 0x64E3BDF7E0360C35u,
+        0x6518AD75D8438F43u, 0x654ED8D34E547313u, 0x6583478410F4C7ECu, 0x65B819651531F9E7u, 0x65EE1FBE5A7E7861u,
+        0x6622D3D6F88F0B3Cu, 0x665788CCB6B2CE0Cu, 0x668D6AFFE45F818Fu, 0x66C262DFEEBBB0F9u, 0x66F6FB97EA6A9D37u,
+        0x672CBA7DE5054485u, 0x6761F48EAF234AD3u, 0x679671B25AEC1D88u, 0x67CC0E1EF1A724EAu, 0x680188D357087712u,
+        0x6835EB082CCA94D7u, 0x686B65CA37FD3A0Du, 0x68A11F9E62FE4448u, 0x68D56785FBBDD55Au, 0x690AC1677AAD4AB0u,
+        0x6940B8E0ACAC4EAEu, 0x6974E718D7D7625Au, 0x69AA20DF0DCD3AF0u, 0x69E0548B68A044D6u, 0x6A1469AE42C8560Cu,
+        0x6A498419D37A6B8Fu, 0x6A7FE52048590672u, 0x6AB3EF342D37A407u, 0x6AE8EB0138858D09u, 0x6B1F25C186A6F04Cu,
+        0x6B537798F428562Fu, 0x6B88557F31326BBBu, 0x6BBE6ADEFD7F06AAu, 0x6BF302CB5E6F642Au, 0x6C27C37E360B3D35u,
+        0x6C5DB45DC38E0C82u, 0x6C9290BA9A38C7D1u, 0x6CC734E940C6F9C5u, 0x6CFD022390F8B837u, 0x6D3221563A9B7322u,
+        0x6D66A9ABC9424FEBu, 0x6D9C5416BB92E3E6u, 0x6DD1B48E353BCE6Fu, 0x6E0621B1C28AC20Bu, 0x6E3BAA1E332D728Eu,
+        0x6E714A52DFFC6799u, 0x6EA59CE797FB817Fu, 0x6EDB04217DFA61DFu, 0x6F10E294EEBC7D2Bu, 0x6F451B3A2A6B9C76u,
+        0x6F7A6208B5068394u, 0x6FB07D457124123Cu, 0x6FE49C96CD6D16CBu, 0x7019C3BC80C85C7Eu, 0x70501A55D07D39CFu,
+        0x708420EB449C8842u, 0x70B9292615C3AA53u, 0x70EF736F9B3494E8u, 0x7123A825C100DD11u, 0x7158922F31411455u,
+        0x718EB6BAFD91596Bu, 0x71C33234DE7AD7E2u, 0x71F7FEC216198DDBu, 0x722DFE729B9FF152u, 0x7262BF07A143F6D3u,
+        0x72976EC98994F488u, 0x72CD4A7BEBFA31AAu, 0x73024E8D737C5F0Au, 0x7336E230D05B76CDu, 0x736C9ABD04725480u,
+        0x73A1E0B622C774D0u, 0x73D658E3AB795204u, 0x740BEF1C9657A685u, 0x74417571DDF6C813u, 0x7475D2CE55747A18u,
+        0x74AB4781EAD1989Eu, 0x74E10CB132C2FF63u, 0x75154FDD7F73BF3Bu, 0x754AA3D4DF50AF0Au, 0x7580A6650B926D66u,
+        0x75B4CFFE4E7708C0u, 0x75EA03FDE214CAF0u, 0x7620427EAD4CFED6u, 0x7654531E58A03E8Bu, 0x768967E5EEC84E2Eu,
+        0x76BFC1DF6A7A61BAu, 0x76F3D92BA28C7D14u, 0x7728CF768B2F9C59u, 0x775F03542DFB8370u, 0x779362149CBD3226u,
+        0x77C83A99C3EC7EAFu, 0x77FE494034E79E5Bu, 0x7832EDC82110C2F9u, 0x7867A93A2954F3B7u, 0x789D9388B3AA30A5u,
+        0x78D27C35704A5E67u, 0x79071B42CC5CF601u, 0x793CE2137F743381u, 0x79720D4C2FA8A030u, 0x79A6909F3B92C83Du,
+        0x79DC34C70A777A4Cu, 0x7A11A0FC668AAC6Fu, 0x7A46093B802D578Bu, 0x7A7B8B8A6038AD6Eu, 0x7AB137367C236C65u,
+        0x7AE585041B2C477Eu, 0x7B1AE64521F7595Eu, 0x7B50CFEB353A97DAu, 0x7B8503E602893DD1u, 0x7BBA44DF832B8D45u,
+        0x7BF06B0BB1FB384Bu, 0x7C2485CE9E7A065Eu, 0x7C59A742461887F6u, 0x7C9008896BCF54F9u, 0x7CC40AABC6C32A38u,
+        0x7CF90D56B873F4C6u, 0x7D2F50AC6690F1F8u, 0x7D63926BC01A973Bu, 0x7D987706B0213D09u, 0x7DCE94C85C298C4Cu,
+        0x7E031CFD3999F7AFu, 0x7E37E43C8800759Bu, 0x7E6DDD4BAA009302u, 0x7EA2AA4F4A405BE1u, 0x7ED754E31CD072D9u,
+        0x7F0D2A1BE4048F90u, 0x7F423A516E82D9BAu, 0x7F76C8E5CA239028u, 0x7FAC7B1F3CAC7433u, 0x7FE1CCF385EBC89Fu,
+        0x7FEFFFFFFFFFFFFFu};
+};
+
+template <class _Floating>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI
+to_chars_result _Floating_to_chars_general_precision(
+    char* _First, char* const _Last, const _Floating _Value, int _Precision) noexcept {
+
+    using _Traits    = _Floating_type_traits<_Floating>;
+    using _Uint_type = typename _Traits::_Uint_type;
+
+    const _Uint_type _Uint_value = _VSTD::bit_cast<_Uint_type>(_Value);
+
+    if (_Uint_value == 0) { // zero detected; write "0" and return; _Precision is irrelevant due to zero-trimming
+        if (_First == _Last) {
+            return {_Last, errc::value_too_large};
+        }
+
+        *_First++ = '0';
+
+        return {_First, errc{}};
+    }
+
+    // C11 7.21.6.1 "The fprintf function"/5:
+    // "A negative precision argument is taken as if the precision were omitted."
+    // /8: "g,G [...] Let P equal the precision if nonzero, 6 if the precision is omitted,
+    // or 1 if the precision is zero."
+
+    // Performance note: It's possible to rewrite this for branchless codegen,
+    // but profiling will be necessary to determine whether that's faster.
+    if (_Precision < 0) {
+        _Precision = 6;
+    } else if (_Precision == 0) {
+        _Precision = 1;
+    } else if (_Precision < 1'000'000) {
+        // _Precision is ok.
+    } else {
+        // Avoid integer overflow.
+        // Due to general notation's zero-trimming behavior, we can simply clamp _Precision.
+        // This is further clamped below.
+        _Precision = 1'000'000;
+    }
+
+    // _Precision is now the Standard's P.
+
+    // /8: "Then, if a conversion with style E would have an exponent of X:
+    // - if P > X >= -4, the conversion is with style f (or F) and precision P - (X + 1).
+    // - otherwise, the conversion is with style e (or E) and precision P - 1."
+
+    // /8: "Finally, [...] any trailing zeros are removed from the fractional portion of the result
+    // and the decimal-point character is removed if there is no fractional portion remaining."
+
+    using _Tables = _General_precision_tables<_Floating>;
+
+    const _Uint_type* _Table_begin;
+    const _Uint_type* _Table_end;
+
+    if (_Precision <= _Tables::_Max_special_P) {
+        _Table_begin = _Tables::_Special_X_table + (_Precision - 1) * (_Precision + 10) / 2;
+        _Table_end   = _Table_begin + _Precision + 5;
+    } else {
+        _Table_begin = _Tables::_Ordinary_X_table;
+        _Table_end   = _Table_begin + _VSTD::min(_Precision, _Tables::_Max_P) + 5;
+    }
+
+    // Profiling indicates that linear search is faster than binary search for small tables.
+    // Performance note: lambda captures may have a small performance cost.
+    const _Uint_type* const _Table_lower_bound = [=] {
+        if constexpr (!_IsSame<_Floating, float>::value) {
+            if (_Precision > 155) { // threshold determined via profiling
+                return _VSTD::lower_bound(_Table_begin, _Table_end, _Uint_value, less{});
+            }
+        }
+
+        return _VSTD::find_if(_Table_begin, _Table_end, [=](const _Uint_type _Elem) { return _Uint_value <= _Elem; });
+    }();
+
+    const ptrdiff_t _Table_index     = _Table_lower_bound - _Table_begin;
+    const int _Scientific_exponent_X = static_cast<int>(_Table_index - 5);
+    const bool _Use_fixed_notation   = _Precision > _Scientific_exponent_X && _Scientific_exponent_X >= -4;
+
+    // Performance note: it might (or might not) be faster to modify Ryu Printf to perform zero-trimming.
+    // Such modifications would involve a fairly complicated state machine (notably, both '0' and '9' digits would
+    // need to be buffered, due to rounding), and that would have performance costs due to increased branching.
+    // Here, we're using a simpler approach: writing into a local buffer, manually zero-trimming, and then copying into
+    // the output range. The necessary buffer size is reasonably small, the zero-trimming logic is simple and fast,
+    // and the final copying is also fast.
+
+    constexpr int _Max_output_length =
+        _IsSame<_Floating, float>::value ? 117 : 773; // cases: 0x1.fffffep-126f and 0x1.fffffffffffffp-1022
+    constexpr int _Max_fixed_precision =
+        _IsSame<_Floating, float>::value ? 37 : 66; // cases: 0x1.fffffep-14f and 0x1.fffffffffffffp-14
+    constexpr int _Max_scientific_precision =
+        _IsSame<_Floating, float>::value ? 111 : 766; // cases: 0x1.fffffep-126f and 0x1.fffffffffffffp-1022
+
+    // Note that _Max_output_length is determined by scientific notation and is more than enough for fixed notation.
+    // 0x1.fffffep+127f is 39 digits, plus 1 for '.', plus _Max_fixed_precision for '0' digits, equals 77.
+    // 0x1.fffffffffffffp+1023 is 309 digits, plus 1 for '.', plus _Max_fixed_precision for '0' digits, equals 376.
+
+    char _Buffer[_Max_output_length];
+    const char* const _Significand_first = _Buffer; // e.g. "1.234"
+    const char* _Significand_last        = nullptr;
+    const char* _Exponent_first          = nullptr; // e.g. "e-05"
+    const char* _Exponent_last           = nullptr;
+    int _Effective_precision; // number of digits printed after the decimal point, before trimming
+
+    // Write into the local buffer.
+    // Clamping _Effective_precision allows _Buffer to be as small as possible, and increases efficiency.
+    if (_Use_fixed_notation) {
+        _Effective_precision = _VSTD::min(_Precision - (_Scientific_exponent_X + 1), _Max_fixed_precision);
+        const to_chars_result _Buf_result =
+            _Floating_to_chars_fixed_precision(_Buffer, _VSTD::end(_Buffer), _Value, _Effective_precision);
+        _LIBCPP_ASSERT(_Buf_result.ec == errc{}, "");
+        _Significand_last = _Buf_result.ptr;
+    } else {
+        _Effective_precision = _VSTD::min(_Precision - 1, _Max_scientific_precision);
+        const to_chars_result _Buf_result =
+            _Floating_to_chars_scientific_precision(_Buffer, _VSTD::end(_Buffer), _Value, _Effective_precision);
+        _LIBCPP_ASSERT(_Buf_result.ec == errc{}, "");
+        _Significand_last = _VSTD::find(_Buffer, _Buf_result.ptr, 'e');
+        _Exponent_first   = _Significand_last;
+        _Exponent_last    = _Buf_result.ptr;
+    }
+
+    // If we printed a decimal point followed by digits, perform zero-trimming.
+    if (_Effective_precision > 0) {
+        while (_Significand_last[-1] == '0') { // will stop at '.' or a nonzero digit
+            --_Significand_last;
+        }
+
+        if (_Significand_last[-1] == '.') {
+            --_Significand_last;
+        }
+    }
+
+    // Copy the significand to the output range.
+    const ptrdiff_t _Significand_distance = _Significand_last - _Significand_first;
+    if (_Last - _First < _Significand_distance) {
+        return {_Last, errc::value_too_large};
+    }
+    _VSTD::memcpy(_First, _Significand_first, static_cast<size_t>(_Significand_distance));
+    _First += _Significand_distance;
+
+    // Copy the exponent to the output range.
+    if (!_Use_fixed_notation) {
+        const ptrdiff_t _Exponent_distance = _Exponent_last - _Exponent_first;
+        if (_Last - _First < _Exponent_distance) {
+            return {_Last, errc::value_too_large};
+        }
+        _VSTD::memcpy(_First, _Exponent_first, static_cast<size_t>(_Exponent_distance));
+        _First += _Exponent_distance;
+    }
+
+    return {_First, errc{}};
+}
+
+enum class _Floating_to_chars_overload { _Plain, _Format_only, _Format_precision };
+
+template <_Floating_to_chars_overload _Overload, class _Floating>
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI
+to_chars_result _Floating_to_chars(
+    char* _First, char* const _Last, _Floating _Value, const chars_format _Fmt, const int _Precision) noexcept {
+
+    if constexpr (_Overload == _Floating_to_chars_overload::_Plain) {
+        _LIBCPP_ASSERT(_Fmt == chars_format{}, ""); // plain overload must pass chars_format{} internally
+    } else {
+        _LIBCPP_ASSERT(_Fmt == chars_format::general || _Fmt == chars_format::scientific || _Fmt == chars_format::fixed
+                         || _Fmt == chars_format::hex,
+            "invalid format in to_chars()");
+    }
+
+    using _Traits    = _Floating_type_traits<_Floating>;
+    using _Uint_type = typename _Traits::_Uint_type;
+
+    _Uint_type _Uint_value = _VSTD::bit_cast<_Uint_type>(_Value);
+
+    const bool _Was_negative = (_Uint_value & _Traits::_Shifted_sign_mask) != 0;
+
+    if (_Was_negative) { // sign bit detected; write minus sign and clear sign bit
+        if (_First == _Last) {
+            return {_Last, errc::value_too_large};
+        }
+
+        *_First++ = '-';
+
+        _Uint_value &= ~_Traits::_Shifted_sign_mask;
+        _Value = _VSTD::bit_cast<_Floating>(_Uint_value);
+    }
+
+    if ((_Uint_value & _Traits::_Shifted_exponent_mask) == _Traits::_Shifted_exponent_mask) {
+        // inf/nan detected; write appropriate string and return
+        const char* _Str;
+        size_t _Len;
+
+        const _Uint_type _Mantissa = _Uint_value & _Traits::_Denormal_mantissa_mask;
+
+        if (_Mantissa == 0) {
+            _Str = "inf";
+            _Len = 3;
+        } else if (_Was_negative && _Mantissa == _Traits::_Special_nan_mantissa_mask) {
+            // When a NaN value has the sign bit set, the quiet bit set, and all other mantissa bits cleared,
+            // the UCRT interprets it to mean "indeterminate", and indicates this by printing "-nan(ind)".
+            _Str = "nan(ind)";
+            _Len = 8;
+        } else if ((_Mantissa & _Traits::_Special_nan_mantissa_mask) != 0) {
+            _Str = "nan";
+            _Len = 3;
+        } else {
+            _Str = "nan(snan)";
+            _Len = 9;
+        }
+
+        if (_Last - _First < static_cast<ptrdiff_t>(_Len)) {
+            return {_Last, errc::value_too_large};
+        }
+
+        _VSTD::memcpy(_First, _Str, _Len);
+
+        return {_First + _Len, errc{}};
+    }
+
+    if constexpr (_Overload == _Floating_to_chars_overload::_Plain) {
+        return _Floating_to_chars_ryu(_First, _Last, _Value, chars_format{});
+    } else if constexpr (_Overload == _Floating_to_chars_overload::_Format_only) {
+        if (_Fmt == chars_format::hex) {
+            return _Floating_to_chars_hex_shortest(_First, _Last, _Value);
+        }
+
+        return _Floating_to_chars_ryu(_First, _Last, _Value, _Fmt);
+    } else if constexpr (_Overload == _Floating_to_chars_overload::_Format_precision) {
+        switch (_Fmt) {
+        case chars_format::scientific:
+            return _Floating_to_chars_scientific_precision(_First, _Last, _Value, _Precision);
+        case chars_format::fixed:
+            return _Floating_to_chars_fixed_precision(_First, _Last, _Value, _Precision);
+        case chars_format::general:
+            return _Floating_to_chars_general_precision(_First, _Last, _Value, _Precision);
+        case chars_format::hex:
+        default: // avoid MSVC warning C4715: not all control paths return a value
+            return _Floating_to_chars_hex_precision(_First, _Last, _Value, _Precision);
+        }
+    }
+}
+
+// clang-format on
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_SRC_INCLUDE_TO_CHARS_FLOATING_POINT_H
diff --git a/app/src/main/cpp/libcxx/src/ios.cpp b/app/src/main/cpp/libcxx/src/ios.cpp
new file mode 100644
index 0000000..870406b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/ios.cpp
@@ -0,0 +1,443 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#include <__locale>
+#include <algorithm>
+#include <ios>
+#include <limits>
+#include <memory>
+#include <new>
+#include <stdlib.h>
+#include <string>
+
+#include "include/config_elast.h"
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+class _LIBCPP_HIDDEN __iostream_category
+    : public __do_message
+{
+public:
+    virtual const char* name() const noexcept;
+    virtual string message(int ev) const;
+};
+
+const char*
+__iostream_category::name() const noexcept
+{
+    return "iostream";
+}
+
+string
+__iostream_category::message(int ev) const
+{
+    if (ev != static_cast<int>(io_errc::stream)
+#ifdef _LIBCPP_ELAST
+        && ev <= _LIBCPP_ELAST
+#endif // _LIBCPP_ELAST
+        )
+        return __do_message::message(ev);
+    return string("unspecified iostream_category error");
+}
+
+const error_category&
+iostream_category() noexcept
+{
+    static __iostream_category s;
+    return s;
+}
+
+// ios_base::failure
+
+ios_base::failure::failure(const string& msg, const error_code& ec)
+    : system_error(ec, msg)
+{
+}
+
+ios_base::failure::failure(const char* msg, const error_code& ec)
+    : system_error(ec, msg)
+{
+}
+
+ios_base::failure::~failure() throw()
+{
+}
+
+// ios_base locale
+
+const ios_base::fmtflags ios_base::boolalpha;
+const ios_base::fmtflags ios_base::dec;
+const ios_base::fmtflags ios_base::fixed;
+const ios_base::fmtflags ios_base::hex;
+const ios_base::fmtflags ios_base::internal;
+const ios_base::fmtflags ios_base::left;
+const ios_base::fmtflags ios_base::oct;
+const ios_base::fmtflags ios_base::right;
+const ios_base::fmtflags ios_base::scientific;
+const ios_base::fmtflags ios_base::showbase;
+const ios_base::fmtflags ios_base::showpoint;
+const ios_base::fmtflags ios_base::showpos;
+const ios_base::fmtflags ios_base::skipws;
+const ios_base::fmtflags ios_base::unitbuf;
+const ios_base::fmtflags ios_base::uppercase;
+const ios_base::fmtflags ios_base::adjustfield;
+const ios_base::fmtflags ios_base::basefield;
+const ios_base::fmtflags ios_base::floatfield;
+
+const ios_base::iostate ios_base::badbit;
+const ios_base::iostate ios_base::eofbit;
+const ios_base::iostate ios_base::failbit;
+const ios_base::iostate ios_base::goodbit;
+
+const ios_base::openmode ios_base::app;
+const ios_base::openmode ios_base::ate;
+const ios_base::openmode ios_base::binary;
+const ios_base::openmode ios_base::in;
+const ios_base::openmode ios_base::out;
+const ios_base::openmode ios_base::trunc;
+
+void
+ios_base::__call_callbacks(event ev)
+{
+    for (size_t i = __event_size_; i;)
+    {
+        --i;
+        __fn_[i](ev, *this, __index_[i]);
+    }
+}
+
+// locale
+
+locale
+ios_base::imbue(const locale& newloc)
+{
+    static_assert(sizeof(locale) == sizeof(__loc_), "");
+    locale& loc_storage = *reinterpret_cast<locale*>(&__loc_);
+    locale oldloc = loc_storage;
+    loc_storage = newloc;
+    __call_callbacks(imbue_event);
+    return oldloc;
+}
+
+locale
+ios_base::getloc() const
+{
+    const locale& loc_storage = *reinterpret_cast<const locale*>(&__loc_);
+    return loc_storage;
+}
+
+// xalloc
+#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_NO_THREADS)
+atomic<int> ios_base::__xindex_{0};
+#else
+int ios_base::__xindex_ = 0;
+#endif
+
+template <typename _Tp>
+static size_t __ios_new_cap(size_t __req_size, size_t __current_cap)
+{ // Precondition: __req_size > __current_cap
+    const size_t mx = std::numeric_limits<size_t>::max() / sizeof(_Tp);
+    if (__req_size < mx/2)
+        return _VSTD::max(2 * __current_cap, __req_size);
+    else
+        return mx;
+}
+
+int
+ios_base::xalloc()
+{
+    return __xindex_++;
+}
+
+long&
+ios_base::iword(int index)
+{
+    size_t req_size = static_cast<size_t>(index)+1;
+    if (req_size > __iarray_cap_)
+    {
+        size_t newcap = __ios_new_cap<long>(req_size, __iarray_cap_);
+        long* iarray = static_cast<long*>(realloc(__iarray_, newcap * sizeof(long)));
+        if (iarray == 0)
+        {
+            setstate(badbit);
+            static long error;
+            error = 0;
+            return error;
+        }
+        __iarray_ = iarray;
+        for (long* p = __iarray_ + __iarray_size_; p < __iarray_ + newcap; ++p)
+            *p = 0;
+        __iarray_cap_ = newcap;
+    }
+    __iarray_size_ = max<size_t>(__iarray_size_, req_size);
+    return __iarray_[index];
+}
+
+void*&
+ios_base::pword(int index)
+{
+    size_t req_size = static_cast<size_t>(index)+1;
+    if (req_size > __parray_cap_)
+    {
+        size_t newcap = __ios_new_cap<void *>(req_size, __iarray_cap_);
+        void** parray = static_cast<void**>(realloc(__parray_, newcap * sizeof(void *)));
+        if (parray == 0)
+        {
+            setstate(badbit);
+            static void* error;
+            error = 0;
+            return error;
+        }
+        __parray_ = parray;
+        for (void** p = __parray_ + __parray_size_; p < __parray_ + newcap; ++p)
+            *p = 0;
+        __parray_cap_ = newcap;
+    }
+    __parray_size_ = max<size_t>(__parray_size_, req_size);
+    return __parray_[index];
+}
+
+// register_callback
+
+void
+ios_base::register_callback(event_callback fn, int index)
+{
+    size_t req_size = __event_size_ + 1;
+    if (req_size > __event_cap_)
+    {
+        size_t newcap = __ios_new_cap<event_callback>(req_size, __event_cap_);
+        event_callback* fns = static_cast<event_callback*>(realloc(__fn_, newcap * sizeof(event_callback)));
+        if (fns == 0)
+            setstate(badbit);
+        __fn_ = fns;
+        int* indxs = static_cast<int *>(realloc(__index_, newcap * sizeof(int)));
+        if (indxs == 0)
+            setstate(badbit);
+        __index_ = indxs;
+        __event_cap_ = newcap;
+    }
+    __fn_[__event_size_] = fn;
+    __index_[__event_size_] = index;
+    ++__event_size_;
+}
+
+ios_base::~ios_base()
+{
+    __call_callbacks(erase_event);
+    locale& loc_storage = *reinterpret_cast<locale*>(&__loc_);
+    loc_storage.~locale();
+    free(__fn_);
+    free(__index_);
+    free(__iarray_);
+    free(__parray_);
+}
+
+// iostate
+
+void
+ios_base::clear(iostate state)
+{
+    if (__rdbuf_)
+        __rdstate_ = state;
+    else
+        __rdstate_ = state | badbit;
+
+    if (((state | (__rdbuf_ ? goodbit : badbit)) & __exceptions_) != 0)
+        __throw_failure("ios_base::clear");
+}
+
+// init
+
+void
+ios_base::init(void* sb)
+{
+    __rdbuf_ = sb;
+    __rdstate_ = __rdbuf_ ? goodbit : badbit;
+    __exceptions_ = goodbit;
+    __fmtflags_ = skipws | dec;
+    __width_ = 0;
+    __precision_ = 6;
+    __fn_ = 0;
+    __index_ = 0;
+    __event_size_ = 0;
+    __event_cap_ = 0;
+    __iarray_ = 0;
+    __iarray_size_ = 0;
+    __iarray_cap_ = 0;
+    __parray_ = 0;
+    __parray_size_ = 0;
+    __parray_cap_ = 0;
+    ::new(&__loc_) locale;
+}
+
+void
+ios_base::copyfmt(const ios_base& rhs)
+{
+    // If we can't acquire the needed resources, throw bad_alloc (can't set badbit)
+    // Don't alter *this until all needed resources are acquired
+    unique_ptr<event_callback, void (*)(void*)> new_callbacks(0, free);
+    unique_ptr<int, void (*)(void*)> new_ints(0, free);
+    unique_ptr<long, void (*)(void*)> new_longs(0, free);
+    unique_ptr<void*, void (*)(void*)> new_pointers(0, free);
+    if (__event_cap_ < rhs.__event_size_)
+    {
+        size_t newesize = sizeof(event_callback) * rhs.__event_size_;
+        new_callbacks.reset(static_cast<event_callback*>(malloc(newesize)));
+        if (!new_callbacks)
+            __throw_bad_alloc();
+
+        size_t newisize = sizeof(int) * rhs.__event_size_;
+        new_ints.reset(static_cast<int *>(malloc(newisize)));
+        if (!new_ints)
+            __throw_bad_alloc();
+    }
+    if (__iarray_cap_ < rhs.__iarray_size_)
+    {
+        size_t newsize = sizeof(long) * rhs.__iarray_size_;
+        new_longs.reset(static_cast<long*>(malloc(newsize)));
+        if (!new_longs)
+            __throw_bad_alloc();
+    }
+    if (__parray_cap_ < rhs.__parray_size_)
+    {
+        size_t newsize = sizeof(void*) * rhs.__parray_size_;
+        new_pointers.reset(static_cast<void**>(malloc(newsize)));
+        if (!new_pointers)
+            __throw_bad_alloc();
+    }
+    // Got everything we need.  Copy everything but __rdstate_, __rdbuf_ and __exceptions_
+    __fmtflags_ = rhs.__fmtflags_;
+    __precision_ = rhs.__precision_;
+    __width_ = rhs.__width_;
+    locale& lhs_loc = *reinterpret_cast<locale*>(&__loc_);
+    const locale& rhs_loc = *reinterpret_cast<const locale*>(&rhs.__loc_);
+    lhs_loc = rhs_loc;
+    if (__event_cap_ < rhs.__event_size_)
+    {
+        free(__fn_);
+        __fn_ = new_callbacks.release();
+        free(__index_);
+        __index_ = new_ints.release();
+        __event_cap_ = rhs.__event_size_;
+    }
+    for (__event_size_ = 0; __event_size_ < rhs.__event_size_; ++__event_size_)
+    {
+        __fn_[__event_size_] = rhs.__fn_[__event_size_];
+        __index_[__event_size_] = rhs.__index_[__event_size_];
+    }
+    if (__iarray_cap_ < rhs.__iarray_size_)
+    {
+        free(__iarray_);
+        __iarray_ = new_longs.release();
+        __iarray_cap_ = rhs.__iarray_size_;
+    }
+    for (__iarray_size_ = 0; __iarray_size_ < rhs.__iarray_size_; ++__iarray_size_)
+        __iarray_[__iarray_size_] = rhs.__iarray_[__iarray_size_];
+    if (__parray_cap_ < rhs.__parray_size_)
+    {
+        free(__parray_);
+        __parray_ = new_pointers.release();
+        __parray_cap_ = rhs.__parray_size_;
+    }
+    for (__parray_size_ = 0; __parray_size_ < rhs.__parray_size_; ++__parray_size_)
+        __parray_[__parray_size_] = rhs.__parray_[__parray_size_];
+}
+
+void
+ios_base::move(ios_base& rhs)
+{
+    // *this is uninitialized
+    __fmtflags_ = rhs.__fmtflags_;
+    __precision_ = rhs.__precision_;
+    __width_ = rhs.__width_;
+    __rdstate_ = rhs.__rdstate_;
+    __exceptions_ = rhs.__exceptions_;
+    __rdbuf_ = 0;
+    locale& rhs_loc = *reinterpret_cast<locale*>(&rhs.__loc_);
+    ::new(&__loc_) locale(rhs_loc);
+    __fn_ = rhs.__fn_;
+    rhs.__fn_ = 0;
+    __index_ = rhs.__index_;
+    rhs.__index_ = 0;
+    __event_size_ = rhs.__event_size_;
+    rhs.__event_size_ = 0;
+    __event_cap_ = rhs.__event_cap_;
+    rhs.__event_cap_ = 0;
+    __iarray_ = rhs.__iarray_;
+    rhs.__iarray_ = 0;
+    __iarray_size_ = rhs.__iarray_size_;
+    rhs.__iarray_size_ = 0;
+    __iarray_cap_ = rhs.__iarray_cap_;
+    rhs.__iarray_cap_ = 0;
+    __parray_ = rhs.__parray_;
+    rhs.__parray_ = 0;
+    __parray_size_ = rhs.__parray_size_;
+    rhs.__parray_size_ = 0;
+    __parray_cap_ = rhs.__parray_cap_;
+    rhs.__parray_cap_ = 0;
+}
+
+void
+ios_base::swap(ios_base& rhs) noexcept
+{
+    _VSTD::swap(__fmtflags_, rhs.__fmtflags_);
+    _VSTD::swap(__precision_, rhs.__precision_);
+    _VSTD::swap(__width_, rhs.__width_);
+    _VSTD::swap(__rdstate_, rhs.__rdstate_);
+    _VSTD::swap(__exceptions_, rhs.__exceptions_);
+    locale& lhs_loc = *reinterpret_cast<locale*>(&__loc_);
+    locale& rhs_loc = *reinterpret_cast<locale*>(&rhs.__loc_);
+    _VSTD::swap(lhs_loc, rhs_loc);
+    _VSTD::swap(__fn_, rhs.__fn_);
+    _VSTD::swap(__index_, rhs.__index_);
+    _VSTD::swap(__event_size_, rhs.__event_size_);
+    _VSTD::swap(__event_cap_, rhs.__event_cap_);
+    _VSTD::swap(__iarray_, rhs.__iarray_);
+    _VSTD::swap(__iarray_size_, rhs.__iarray_size_);
+    _VSTD::swap(__iarray_cap_, rhs.__iarray_cap_);
+    _VSTD::swap(__parray_, rhs.__parray_);
+    _VSTD::swap(__parray_size_, rhs.__parray_size_);
+    _VSTD::swap(__parray_cap_, rhs.__parray_cap_);
+}
+
+void
+ios_base::__set_badbit_and_consider_rethrow()
+{
+    __rdstate_ |= badbit;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    if (__exceptions_ & badbit)
+        throw;
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+void
+ios_base::__set_failbit_and_consider_rethrow()
+{
+    __rdstate_ |= failbit;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    if (__exceptions_ & failbit)
+        throw;
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+bool
+ios_base::sync_with_stdio(bool sync)
+{
+    static bool previous_state = true;
+    bool r = previous_state;
+    previous_state = sync;
+    return r;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
diff --git a/app/src/main/cpp/libcxx/src/ios.instantiations.cpp b/app/src/main/cpp/libcxx/src/ios.instantiations.cpp
new file mode 100644
index 0000000..ca77ce1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/ios.instantiations.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#include <fstream>
+#include <ios>
+#include <istream>
+#include <ostream>
+#include <sstream>
+#include <streambuf>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// Original explicit instantiations provided in the library
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ios<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_streambuf<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_istream<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ostream<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_iostream<char>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ios<wchar_t>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_streambuf<wchar_t>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_istream<wchar_t>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ostream<wchar_t>;
+#endif
+
+// Additional instantiations added later. Whether programs rely on these being
+// available is protected by _LIBCPP_ABI_ENABLE_ADDITIONAL_IOSTREAM_EXPLICIT_INSTANTIATIONS_1.
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_stringbuf<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_stringstream<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ostringstream<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_istringstream<char>;
+
+#ifndef _LIBCPP_HAS_NO_FSTREAM
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ifstream<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_ofstream<char>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS basic_filebuf<char>;
+#endif
+
+// Add more here if needed...
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/iostream.cpp b/app/src/main/cpp/libcxx/src/iostream.cpp
new file mode 100644
index 0000000..a8948ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/iostream.cpp
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__locale>
+#include <__std_stream>
+#include <new>
+#include <string>
+
+#define _str(s) #s
+#define str(s) _str(s)
+#define _LIBCPP_ABI_NAMESPACE_STR str(_LIBCPP_ABI_NAMESPACE)
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+_ALIGNAS_TYPE (istream) _LIBCPP_FUNC_VIS char cin[sizeof(istream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?cin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin[sizeof(__stdinbuf <char>)];
+static mbstate_t mb_cin;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+_ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin[sizeof(wistream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wcin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin[sizeof(__stdinbuf <wchar_t>)];
+static mbstate_t mb_wcin;
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?cout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)];
+static mbstate_t mb_cout;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wcout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)];
+static mbstate_t mb_wcout;
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?cerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)];
+static mbstate_t mb_cerr;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wcerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)];
+static mbstate_t mb_wcerr;
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?clog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wclog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority
+// attribute with a value that's reserved for the implementation (we're the implementation).
+#include "iostream_init.h"
+
+// On Windows the TLS storage for locales needs to be initialized before we create
+// the standard streams, otherwise it may not be alive during program termination
+// when we flush the streams.
+static void force_locale_initialization() {
+#if defined(_LIBCPP_MSVCRT_LIKE)
+  static bool once = []() {
+    auto loc = newlocale(LC_ALL_MASK, "C", 0);
+    {
+        __libcpp_locale_guard g(loc); // forces initialization of locale TLS
+        ((void)g);
+    }
+    freelocale(loc);
+    return true;
+  }();
+  ((void)once);
+#endif
+}
+
+class DoIOSInit {
+public:
+    DoIOSInit();
+    ~DoIOSInit();
+};
+
+DoIOSInit::DoIOSInit()
+{
+    force_locale_initialization();
+
+    istream* cin_ptr  = ::new(cin)  istream(::new(__cin)  __stdinbuf <char>(stdin, &mb_cin));
+    ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout));
+    ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr));
+                        ::new(clog) ostream(cerr_ptr->rdbuf());
+    cin_ptr->tie(cout_ptr);
+    _VSTD::unitbuf(*cerr_ptr);
+    cerr_ptr->tie(cout_ptr);
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    wistream* wcin_ptr  = ::new(wcin)  wistream(::new(__wcin)  __stdinbuf <wchar_t>(stdin, &mb_wcin));
+    wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout));
+    wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr));
+                          ::new(wclog) wostream(wcerr_ptr->rdbuf());
+
+    wcin_ptr->tie(wcout_ptr);
+    _VSTD::unitbuf(*wcerr_ptr);
+    wcerr_ptr->tie(wcout_ptr);
+#endif
+}
+
+DoIOSInit::~DoIOSInit()
+{
+    ostream* cout_ptr = reinterpret_cast<ostream*>(cout);
+    cout_ptr->flush();
+    ostream* clog_ptr = reinterpret_cast<ostream*>(clog);
+    clog_ptr->flush();
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout);
+    wcout_ptr->flush();
+    wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog);
+    wclog_ptr->flush();
+#endif
+}
+
+ios_base::Init::Init()
+{
+    static DoIOSInit init_the_streams; // gets initialized once
+}
+
+ios_base::Init::~Init()
+{
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/iostream_init.h b/app/src/main/cpp/libcxx/src/iostream_init.h
new file mode 100644
index 0000000..7d1bb5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/iostream_init.h
@@ -0,0 +1,2 @@
+#pragma GCC system_header
+_LIBCPP_HIDDEN ios_base::Init __start_std_streams _LIBCPP_INIT_PRIORITY_MAX;
diff --git a/app/src/main/cpp/libcxx/src/legacy_debug_handler.cpp b/app/src/main/cpp/libcxx/src/legacy_debug_handler.cpp
new file mode 100644
index 0000000..cb2025b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/legacy_debug_handler.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#include <cstdio>
+#include <cstdlib>
+#include <string>
+
+// This file defines the legacy default debug handler and related mechanisms
+// to set it. This is for backwards ABI compatibility with code that has been
+// using this debug handler previously.
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+struct _LIBCPP_TEMPLATE_VIS __libcpp_debug_info {
+  _LIBCPP_EXPORTED_FROM_ABI string what() const;
+
+  const char* __file_;
+  int __line_;
+  const char* __pred_;
+  const char* __msg_;
+};
+
+std::string __libcpp_debug_info::what() const {
+  string msg = __file_;
+  msg += ":" + std::to_string(__line_) + ": _LIBCPP_ASSERT '";
+  msg += __pred_;
+  msg += "' failed. ";
+  msg += __msg_;
+  return msg;
+}
+
+_LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __libcpp_abort_debug_function(__libcpp_debug_info const& info) {
+  std::fprintf(stderr, "%s\n", info.what().c_str());
+  std::abort();
+}
+
+typedef void (*__libcpp_debug_function_type)(__libcpp_debug_info const&);
+
+_LIBCPP_EXPORTED_FROM_ABI
+constinit __libcpp_debug_function_type __libcpp_debug_function = __libcpp_abort_debug_function;
+
+_LIBCPP_EXPORTED_FROM_ABI
+bool __libcpp_set_debug_function(__libcpp_debug_function_type __func) {
+  __libcpp_debug_function = __func;
+  return true;
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/legacy_pointer_safety.cpp b/app/src/main/cpp/libcxx/src/legacy_pointer_safety.cpp
new file mode 100644
index 0000000..5d2b04c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/legacy_pointer_safety.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#include <memory>
+
+// Support for garbage collection was removed in C++23 by https://wg21.link/P2186R2. Libc++ implements
+// that removal as an extension in all Standard versions. However, we still define the functions that
+// were once part of the library's ABI for backwards compatibility.
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+_LIBCPP_FUNC_VIS void declare_reachable(void*) {}
+_LIBCPP_FUNC_VIS void declare_no_pointers(char*, size_t) {}
+_LIBCPP_FUNC_VIS void undeclare_no_pointers(char*, size_t) {}
+_LIBCPP_FUNC_VIS void* __undeclare_reachable(void* p) { return p; }
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/locale.cpp b/app/src/main/cpp/libcxx/src/locale.cpp
new file mode 100644
index 0000000..678c487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/locale.cpp
@@ -0,0 +1,6606 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// On Solaris, we need to define something to make the C99 parts of localeconv
+// visible.
+#ifdef __sun__
+#define _LCONV_C99
+#endif
+
+#include <__utility/unreachable.h>
+#include <algorithm>
+#include <clocale>
+#include <codecvt>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <locale>
+#include <string>
+#include <type_traits>
+#include <typeinfo>
+#include <vector>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+#   include <cwctype>
+#endif
+
+#if defined(_AIX)
+#   include <sys/localedef.h> // for __lc_ctype_ptr
+#endif
+
+#if defined(_LIBCPP_MSVCRT)
+#   define _CTYPE_DISABLE_MACROS
+#endif
+
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+#   include "__support/win32/locale_win32.h"
+#elif !defined(__BIONIC__) && !defined(__NuttX__)
+#   include <langinfo.h>
+#endif
+
+#include "include/atomic_support.h"
+#include "include/sso_allocator.h"
+
+// On Linux, wint_t and wchar_t have different signed-ness, and this causes
+// lots of noise in the build log, but no bugs that I know of.
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wsign-conversion")
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+struct __libcpp_unique_locale {
+  __libcpp_unique_locale(const char* nm) : __loc_(newlocale(LC_ALL_MASK, nm, 0)) {}
+
+  ~__libcpp_unique_locale() {
+    if (__loc_)
+      freelocale(__loc_);
+  }
+
+  explicit operator bool() const { return __loc_; }
+
+  locale_t& get() { return __loc_; }
+
+  locale_t __loc_;
+private:
+  __libcpp_unique_locale(__libcpp_unique_locale const&);
+  __libcpp_unique_locale& operator=(__libcpp_unique_locale const&);
+};
+
+#ifdef __cloc_defined
+locale_t __cloc() {
+  // In theory this could create a race condition. In practice
+  // the race condition is non-fatal since it will just create
+  // a little resource leak. Better approach would be appreciated.
+  static locale_t result = newlocale(LC_ALL_MASK, "C", 0);
+  return result;
+}
+#endif // __cloc_defined
+
+namespace {
+
+struct release
+{
+    void operator()(locale::facet* p) {p->__release_shared();}
+};
+
+template <class T, class ...Args>
+T& make(Args ...args)
+{
+    static typename aligned_storage<sizeof(T)>::type buf;
+    auto *obj = ::new (&buf) T(args...);
+    return *obj;
+}
+
+template <typename T, size_t N>
+inline
+_LIBCPP_CONSTEXPR
+size_t
+countof(const T (&)[N])
+{
+    return N;
+}
+
+template <typename T>
+inline
+_LIBCPP_CONSTEXPR
+size_t
+countof(const T * const begin, const T * const end)
+{
+    return static_cast<size_t>(end - begin);
+}
+
+_LIBCPP_NORETURN static void __throw_runtime_error(const string &msg)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    throw runtime_error(msg);
+#else
+    (void)msg;
+    _VSTD::abort();
+#endif
+}
+
+}
+
+const locale::category locale::none;
+const locale::category locale::collate;
+const locale::category locale::ctype;
+const locale::category locale::monetary;
+const locale::category locale::numeric;
+const locale::category locale::time;
+const locale::category locale::messages;
+const locale::category locale::all;
+
+class _LIBCPP_HIDDEN locale::__imp
+    : public facet
+{
+    enum {N = 30};
+    vector<facet*, __sso_allocator<facet*, N> > facets_;
+    string         name_;
+public:
+    explicit __imp(size_t refs = 0);
+    explicit __imp(const string& name, size_t refs = 0);
+    __imp(const __imp&);
+    __imp(const __imp&, const string&, locale::category c);
+    __imp(const __imp& other, const __imp& one, locale::category c);
+    __imp(const __imp&, facet* f, long id);
+    ~__imp();
+
+    const string& name() const {return name_;}
+    bool has_facet(long id) const
+        {return static_cast<size_t>(id) < facets_.size() && facets_[static_cast<size_t>(id)];}
+    const locale::facet* use_facet(long id) const;
+
+    static const locale& make_classic();
+    static       locale& make_global();
+private:
+    void install(facet* f, long id);
+    template <class F> void install(F* f) {install(f, f->id.__get());}
+    template <class F> void install_from(const __imp& other);
+};
+
+locale::__imp::__imp(size_t refs)
+    : facet(refs),
+      facets_(N),
+      name_("C")
+{
+    facets_.clear();
+    install(&make<_VSTD::collate<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<_VSTD::collate<wchar_t> >(1u));
+#endif
+    install(&make<_VSTD::ctype<char> >(nullptr, false, 1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<_VSTD::ctype<wchar_t> >(1u));
+#endif
+    install(&make<codecvt<char, char, mbstate_t> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<codecvt<wchar_t, char, mbstate_t> >(1u));
+#endif
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+    install(&make<codecvt<char16_t, char, mbstate_t> >(1u));
+    install(&make<codecvt<char32_t, char, mbstate_t> >(1u));
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+    install(&make<codecvt<char16_t, char8_t, mbstate_t> >(1u));
+    install(&make<codecvt<char32_t, char8_t, mbstate_t> >(1u));
+#endif
+    install(&make<numpunct<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<numpunct<wchar_t> >(1u));
+#endif
+    install(&make<num_get<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<num_get<wchar_t> >(1u));
+#endif
+    install(&make<num_put<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<num_put<wchar_t> >(1u));
+#endif
+    install(&make<moneypunct<char, false> >(1u));
+    install(&make<moneypunct<char, true> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<moneypunct<wchar_t, false> >(1u));
+    install(&make<moneypunct<wchar_t, true> >(1u));
+#endif
+    install(&make<money_get<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<money_get<wchar_t> >(1u));
+#endif
+    install(&make<money_put<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<money_put<wchar_t> >(1u));
+#endif
+    install(&make<time_get<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<time_get<wchar_t> >(1u));
+#endif
+    install(&make<time_put<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<time_put<wchar_t> >(1u));
+#endif
+    install(&make<_VSTD::messages<char> >(1u));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+    install(&make<_VSTD::messages<wchar_t> >(1u));
+#endif
+}
+
+locale::__imp::__imp(const string& name, size_t refs)
+    : facet(refs),
+      facets_(N),
+      name_(name)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        facets_ = locale::classic().__locale_->facets_;
+        for (unsigned i = 0; i < facets_.size(); ++i)
+            if (facets_[i])
+                facets_[i]->__add_shared();
+        install(new collate_byname<char>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new collate_byname<wchar_t>(name_));
+#endif
+        install(new ctype_byname<char>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new ctype_byname<wchar_t>(name_));
+#endif
+        install(new codecvt_byname<char, char, mbstate_t>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new codecvt_byname<wchar_t, char, mbstate_t>(name_));
+#endif
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+        install(new codecvt_byname<char16_t, char, mbstate_t>(name_));
+        install(new codecvt_byname<char32_t, char, mbstate_t>(name_));
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+        install(new codecvt_byname<char16_t, char8_t, mbstate_t>(name_));
+        install(new codecvt_byname<char32_t, char8_t, mbstate_t>(name_));
+#endif
+        install(new numpunct_byname<char>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new numpunct_byname<wchar_t>(name_));
+#endif
+        install(new moneypunct_byname<char, false>(name_));
+        install(new moneypunct_byname<char, true>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new moneypunct_byname<wchar_t, false>(name_));
+        install(new moneypunct_byname<wchar_t, true>(name_));
+#endif
+        install(new time_get_byname<char>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new time_get_byname<wchar_t>(name_));
+#endif
+        install(new time_put_byname<char>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new time_put_byname<wchar_t>(name_));
+#endif
+        install(new messages_byname<char>(name_));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        install(new messages_byname<wchar_t>(name_));
+#endif
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+        for (unsigned i = 0; i < facets_.size(); ++i)
+            if (facets_[i])
+                facets_[i]->__release_shared();
+        throw;
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+locale::__imp::__imp(const __imp& other)
+    : facets_(max<size_t>(N, other.facets_.size())),
+      name_(other.name_)
+{
+    facets_ = other.facets_;
+    for (unsigned i = 0; i < facets_.size(); ++i)
+        if (facets_[i])
+            facets_[i]->__add_shared();
+}
+
+locale::__imp::__imp(const __imp& other, const string& name, locale::category c)
+    : facets_(N),
+      name_("*")
+{
+    facets_ = other.facets_;
+    for (unsigned i = 0; i < facets_.size(); ++i)
+        if (facets_[i])
+            facets_[i]->__add_shared();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        if (c & locale::collate)
+        {
+            install(new collate_byname<char>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new collate_byname<wchar_t>(name));
+#endif
+        }
+        if (c & locale::ctype)
+        {
+            install(new ctype_byname<char>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new ctype_byname<wchar_t>(name));
+#endif
+            install(new codecvt_byname<char, char, mbstate_t>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new codecvt_byname<wchar_t, char, mbstate_t>(name));
+#endif
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+            install(new codecvt_byname<char16_t, char, mbstate_t>(name));
+            install(new codecvt_byname<char32_t, char, mbstate_t>(name));
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+            install(new codecvt_byname<char16_t, char8_t, mbstate_t>(name));
+            install(new codecvt_byname<char32_t, char8_t, mbstate_t>(name));
+#endif
+        }
+        if (c & locale::monetary)
+        {
+            install(new moneypunct_byname<char, false>(name));
+            install(new moneypunct_byname<char, true>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new moneypunct_byname<wchar_t, false>(name));
+            install(new moneypunct_byname<wchar_t, true>(name));
+#endif
+        }
+        if (c & locale::numeric)
+        {
+            install(new numpunct_byname<char>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new numpunct_byname<wchar_t>(name));
+#endif
+        }
+        if (c & locale::time)
+        {
+            install(new time_get_byname<char>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new time_get_byname<wchar_t>(name));
+#endif
+            install(new time_put_byname<char>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new time_put_byname<wchar_t>(name));
+#endif
+        }
+        if (c & locale::messages)
+        {
+            install(new messages_byname<char>(name));
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install(new messages_byname<wchar_t>(name));
+#endif
+        }
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+        for (unsigned i = 0; i < facets_.size(); ++i)
+            if (facets_[i])
+                facets_[i]->__release_shared();
+        throw;
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+template<class F>
+inline
+void
+locale::__imp::install_from(const locale::__imp& one)
+{
+    long id = F::id.__get();
+    install(const_cast<F*>(static_cast<const F*>(one.use_facet(id))), id);
+}
+
+locale::__imp::__imp(const __imp& other, const __imp& one, locale::category c)
+    : facets_(N),
+      name_("*")
+{
+    facets_ = other.facets_;
+    for (unsigned i = 0; i < facets_.size(); ++i)
+        if (facets_[i])
+            facets_[i]->__add_shared();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        if (c & locale::collate)
+        {
+            install_from<_VSTD::collate<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<_VSTD::collate<wchar_t> >(one);
+#endif
+        }
+        if (c & locale::ctype)
+        {
+            install_from<_VSTD::ctype<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<_VSTD::ctype<wchar_t> >(one);
+#endif
+            install_from<_VSTD::codecvt<char, char, mbstate_t> >(one);
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+            install_from<_VSTD::codecvt<char16_t, char, mbstate_t> >(one);
+            install_from<_VSTD::codecvt<char32_t, char, mbstate_t> >(one);
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+            install_from<_VSTD::codecvt<char16_t, char8_t, mbstate_t> >(one);
+            install_from<_VSTD::codecvt<char32_t, char8_t, mbstate_t> >(one);
+#endif
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<_VSTD::codecvt<wchar_t, char, mbstate_t> >(one);
+#endif
+        }
+        if (c & locale::monetary)
+        {
+            install_from<moneypunct<char, false> >(one);
+            install_from<moneypunct<char, true> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<moneypunct<wchar_t, false> >(one);
+            install_from<moneypunct<wchar_t, true> >(one);
+#endif
+            install_from<money_get<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<money_get<wchar_t> >(one);
+#endif
+            install_from<money_put<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<money_put<wchar_t> >(one);
+#endif
+        }
+        if (c & locale::numeric)
+        {
+            install_from<numpunct<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<numpunct<wchar_t> >(one);
+#endif
+            install_from<num_get<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<num_get<wchar_t> >(one);
+#endif
+            install_from<num_put<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<num_put<wchar_t> >(one);
+#endif
+        }
+        if (c & locale::time)
+        {
+            install_from<time_get<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<time_get<wchar_t> >(one);
+#endif
+            install_from<time_put<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<time_put<wchar_t> >(one);
+#endif
+        }
+        if (c & locale::messages)
+        {
+            install_from<_VSTD::messages<char> >(one);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+            install_from<_VSTD::messages<wchar_t> >(one);
+#endif
+        }
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+        for (unsigned i = 0; i < facets_.size(); ++i)
+            if (facets_[i])
+                facets_[i]->__release_shared();
+        throw;
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+locale::__imp::__imp(const __imp& other, facet* f, long id)
+    : facets_(max<size_t>(N, other.facets_.size()+1)),
+      name_("*")
+{
+    f->__add_shared();
+    unique_ptr<facet, release> hold(f);
+    facets_ = other.facets_;
+    for (unsigned i = 0; i < other.facets_.size(); ++i)
+        if (facets_[i])
+            facets_[i]->__add_shared();
+    install(hold.get(), id);
+}
+
+locale::__imp::~__imp()
+{
+    for (unsigned i = 0; i < facets_.size(); ++i)
+        if (facets_[i])
+            facets_[i]->__release_shared();
+}
+
+void
+locale::__imp::install(facet* f, long id)
+{
+    f->__add_shared();
+    unique_ptr<facet, release> hold(f);
+    if (static_cast<size_t>(id) >= facets_.size())
+        facets_.resize(static_cast<size_t>(id+1));
+    if (facets_[static_cast<size_t>(id)])
+        facets_[static_cast<size_t>(id)]->__release_shared();
+    facets_[static_cast<size_t>(id)] = hold.release();
+}
+
+const locale::facet*
+locale::__imp::use_facet(long id) const
+{
+    if (!has_facet(id))
+        __throw_bad_cast();
+    return facets_[static_cast<size_t>(id)];
+}
+
+// locale
+
+const locale&
+locale::__imp::make_classic()
+{
+    // only one thread can get in here and it only gets in once
+    static aligned_storage<sizeof(locale)>::type buf;
+    locale* c = reinterpret_cast<locale*>(&buf);
+    c->__locale_ = &make<__imp>(1u);
+    return *c;
+}
+
+const locale&
+locale::classic()
+{
+    static const locale& c = __imp::make_classic();
+    return c;
+}
+
+locale&
+locale::__imp::make_global()
+{
+    // only one thread can get in here and it only gets in once
+    static aligned_storage<sizeof(locale)>::type buf;
+    auto *obj = ::new (&buf) locale(locale::classic());
+    return *obj;
+}
+
+locale&
+locale::__global()
+{
+    static locale& g = __imp::make_global();
+    return g;
+}
+
+locale::locale() noexcept
+    : __locale_(__global().__locale_)
+{
+    __locale_->__add_shared();
+}
+
+locale::locale(const locale& l) noexcept
+    : __locale_(l.__locale_)
+{
+    __locale_->__add_shared();
+}
+
+locale::~locale()
+{
+    __locale_->__release_shared();
+}
+
+const locale&
+locale::operator=(const locale& other) noexcept
+{
+    other.__locale_->__add_shared();
+    __locale_->__release_shared();
+    __locale_ = other.__locale_;
+    return *this;
+}
+
+locale::locale(const char* name)
+    : __locale_(name ? new __imp(name)
+                     : (__throw_runtime_error("locale constructed with null"), nullptr))
+{
+    __locale_->__add_shared();
+}
+
+locale::locale(const string& name)
+    : __locale_(new __imp(name))
+{
+    __locale_->__add_shared();
+}
+
+locale::locale(const locale& other, const char* name, category c)
+    : __locale_(name ? new __imp(*other.__locale_, name, c)
+                     : (__throw_runtime_error("locale constructed with null"), nullptr))
+{
+    __locale_->__add_shared();
+}
+
+locale::locale(const locale& other, const string& name, category c)
+    : __locale_(new __imp(*other.__locale_, name, c))
+{
+    __locale_->__add_shared();
+}
+
+locale::locale(const locale& other, const locale& one, category c)
+    : __locale_(new __imp(*other.__locale_, *one.__locale_, c))
+{
+    __locale_->__add_shared();
+}
+
+string
+locale::name() const
+{
+    return __locale_->name();
+}
+
+void
+locale::__install_ctor(const locale& other, facet* f, long id)
+{
+    if (f)
+        __locale_ = new __imp(*other.__locale_, f, id);
+    else
+        __locale_ = other.__locale_;
+    __locale_->__add_shared();
+}
+
+locale
+locale::global(const locale& loc)
+{
+    locale& g = __global();
+    locale r = g;
+    g = loc;
+    if (g.name() != "*")
+        setlocale(LC_ALL, g.name().c_str());
+    return r;
+}
+
+bool
+locale::has_facet(id& x) const
+{
+    return __locale_->has_facet(x.__get());
+}
+
+const locale::facet*
+locale::use_facet(id& x) const
+{
+    return __locale_->use_facet(x.__get());
+}
+
+bool
+locale::operator==(const locale& y) const
+{
+    return (__locale_ == y.__locale_)
+        || (__locale_->name() != "*" && __locale_->name() == y.__locale_->name());
+}
+
+// locale::facet
+
+locale::facet::~facet()
+{
+}
+
+void
+locale::facet::__on_zero_shared() noexcept
+{
+    delete this;
+}
+
+// locale::id
+
+int32_t locale::id::__next_id = 0;
+
+namespace
+{
+
+class __fake_bind
+{
+    locale::id* id_;
+    void (locale::id::* pmf_)();
+public:
+    __fake_bind(void (locale::id::* pmf)(), locale::id* id)
+        : id_(id), pmf_(pmf) {}
+
+    void operator()() const
+    {
+        (id_->*pmf_)();
+    }
+};
+
+}
+
+long
+locale::id::__get()
+{
+    call_once(__flag_, __fake_bind(&locale::id::__init, this));
+    return __id_ - 1;
+}
+
+void
+locale::id::__init()
+{
+    __id_ = __libcpp_atomic_add(&__next_id, 1);
+}
+
+// template <> class collate_byname<char>
+
+collate_byname<char>::collate_byname(const char* n, size_t refs)
+    : collate<char>(refs),
+      __l_(newlocale(LC_ALL_MASK, n, 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("collate_byname<char>::collate_byname"
+                            " failed to construct for " + string(n));
+}
+
+collate_byname<char>::collate_byname(const string& name, size_t refs)
+    : collate<char>(refs),
+      __l_(newlocale(LC_ALL_MASK, name.c_str(), 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("collate_byname<char>::collate_byname"
+                            " failed to construct for " + name);
+}
+
+collate_byname<char>::~collate_byname()
+{
+    freelocale(__l_);
+}
+
+int
+collate_byname<char>::do_compare(const char_type* __lo1, const char_type* __hi1,
+                                 const char_type* __lo2, const char_type* __hi2) const
+{
+    string_type lhs(__lo1, __hi1);
+    string_type rhs(__lo2, __hi2);
+    int r = strcoll_l(lhs.c_str(), rhs.c_str(), __l_);
+    if (r < 0)
+        return -1;
+    if (r > 0)
+        return 1;
+    return r;
+}
+
+collate_byname<char>::string_type
+collate_byname<char>::do_transform(const char_type* lo, const char_type* hi) const
+{
+    const string_type in(lo, hi);
+    string_type out(strxfrm_l(0, in.c_str(), 0, __l_), char());
+    strxfrm_l(const_cast<char*>(out.c_str()), in.c_str(), out.size()+1, __l_);
+    return out;
+}
+
+// template <> class collate_byname<wchar_t>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+collate_byname<wchar_t>::collate_byname(const char* n, size_t refs)
+    : collate<wchar_t>(refs),
+      __l_(newlocale(LC_ALL_MASK, n, 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("collate_byname<wchar_t>::collate_byname(size_t refs)"
+                            " failed to construct for " + string(n));
+}
+
+collate_byname<wchar_t>::collate_byname(const string& name, size_t refs)
+    : collate<wchar_t>(refs),
+      __l_(newlocale(LC_ALL_MASK, name.c_str(), 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("collate_byname<wchar_t>::collate_byname(size_t refs)"
+                            " failed to construct for " + name);
+}
+
+collate_byname<wchar_t>::~collate_byname()
+{
+    freelocale(__l_);
+}
+
+int
+collate_byname<wchar_t>::do_compare(const char_type* __lo1, const char_type* __hi1,
+                                 const char_type* __lo2, const char_type* __hi2) const
+{
+    string_type lhs(__lo1, __hi1);
+    string_type rhs(__lo2, __hi2);
+    int r = wcscoll_l(lhs.c_str(), rhs.c_str(), __l_);
+    if (r < 0)
+        return -1;
+    if (r > 0)
+        return 1;
+    return r;
+}
+
+collate_byname<wchar_t>::string_type
+collate_byname<wchar_t>::do_transform(const char_type* lo, const char_type* hi) const
+{
+    const string_type in(lo, hi);
+    string_type out(wcsxfrm_l(0, in.c_str(), 0, __l_), wchar_t());
+    wcsxfrm_l(const_cast<wchar_t*>(out.c_str()), in.c_str(), out.size()+1, __l_);
+    return out;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+const ctype_base::mask ctype_base::space;
+const ctype_base::mask ctype_base::print;
+const ctype_base::mask ctype_base::cntrl;
+const ctype_base::mask ctype_base::upper;
+const ctype_base::mask ctype_base::lower;
+const ctype_base::mask ctype_base::alpha;
+const ctype_base::mask ctype_base::digit;
+const ctype_base::mask ctype_base::punct;
+const ctype_base::mask ctype_base::xdigit;
+const ctype_base::mask ctype_base::blank;
+const ctype_base::mask ctype_base::alnum;
+const ctype_base::mask ctype_base::graph;
+
+// template <> class ctype<wchar_t>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+locale::id ctype<wchar_t>::id;
+
+ctype<wchar_t>::~ctype()
+{
+}
+
+bool
+ctype<wchar_t>::do_is(mask m, char_type c) const
+{
+    return isascii(c) ? (ctype<char>::classic_table()[c] & m) != 0 : false;
+}
+
+const wchar_t*
+ctype<wchar_t>::do_is(const char_type* low, const char_type* high, mask* vec) const
+{
+    for (; low != high; ++low, ++vec)
+        *vec = static_cast<mask>(isascii(*low) ?
+                                   ctype<char>::classic_table()[*low] : 0);
+    return low;
+}
+
+const wchar_t*
+ctype<wchar_t>::do_scan_is(mask m, const char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+        if (isascii(*low) && (ctype<char>::classic_table()[*low] & m))
+            break;
+    return low;
+}
+
+const wchar_t*
+ctype<wchar_t>::do_scan_not(mask m, const char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+        if (!(isascii(*low) && (ctype<char>::classic_table()[*low] & m)))
+            break;
+    return low;
+}
+
+wchar_t
+ctype<wchar_t>::do_toupper(char_type c) const
+{
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+    return isascii(c) ? _DefaultRuneLocale.__mapupper[c] : c;
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+      defined(__NetBSD__) || defined(__MVS__)
+    return isascii(c) ? ctype<char>::__classic_upper_table()[c] : c;
+#else
+    return (isascii(c) && iswlower_l(c, _LIBCPP_GET_C_LOCALE)) ? c-L'a'+L'A' : c;
+#endif
+}
+
+const wchar_t*
+ctype<wchar_t>::do_toupper(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+        *low = isascii(*low) ? _DefaultRuneLocale.__mapupper[*low] : *low;
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+      defined(__NetBSD__) || defined(__MVS__)
+        *low = isascii(*low) ? ctype<char>::__classic_upper_table()[*low]
+                             : *low;
+#else
+        *low = (isascii(*low) && islower_l(*low, _LIBCPP_GET_C_LOCALE)) ? (*low-L'a'+L'A') : *low;
+#endif
+    return low;
+}
+
+wchar_t
+ctype<wchar_t>::do_tolower(char_type c) const
+{
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+    return isascii(c) ? _DefaultRuneLocale.__maplower[c] : c;
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+      defined(__NetBSD__) || defined(__MVS__)
+    return isascii(c) ? ctype<char>::__classic_lower_table()[c] : c;
+#else
+    return (isascii(c) && isupper_l(c, _LIBCPP_GET_C_LOCALE)) ? c-L'A'+'a' : c;
+#endif
+}
+
+const wchar_t*
+ctype<wchar_t>::do_tolower(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+        *low = isascii(*low) ? _DefaultRuneLocale.__maplower[*low] : *low;
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || \
+      defined(__NetBSD__) || defined(__MVS__)
+        *low = isascii(*low) ? ctype<char>::__classic_lower_table()[*low]
+                             : *low;
+#else
+        *low = (isascii(*low) && isupper_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-L'A'+L'a' : *low;
+#endif
+    return low;
+}
+
+wchar_t
+ctype<wchar_t>::do_widen(char c) const
+{
+    return c;
+}
+
+const char*
+ctype<wchar_t>::do_widen(const char* low, const char* high, char_type* dest) const
+{
+    for (; low != high; ++low, ++dest)
+        *dest = *low;
+    return low;
+}
+
+char
+ctype<wchar_t>::do_narrow(char_type c, char dfault) const
+{
+    if (isascii(c))
+        return static_cast<char>(c);
+    return dfault;
+}
+
+const wchar_t*
+ctype<wchar_t>::do_narrow(const char_type* low, const char_type* high, char dfault, char* dest) const
+{
+    for (; low != high; ++low, ++dest)
+        if (isascii(*low))
+            *dest = static_cast<char>(*low);
+        else
+            *dest = dfault;
+    return low;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// template <> class ctype<char>;
+
+locale::id ctype<char>::id;
+
+const size_t ctype<char>::table_size;
+
+ctype<char>::ctype(const mask* tab, bool del, size_t refs)
+    : locale::facet(refs),
+      __tab_(tab),
+      __del_(del)
+{
+  if (__tab_ == 0)
+      __tab_ = classic_table();
+}
+
+ctype<char>::~ctype()
+{
+    if (__tab_ && __del_)
+        delete [] __tab_;
+}
+
+char
+ctype<char>::do_toupper(char_type c) const
+{
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+    return isascii(c) ?
+      static_cast<char>(_DefaultRuneLocale.__mapupper[static_cast<ptrdiff_t>(c)]) : c;
+#elif defined(__NetBSD__)
+    return static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(c)]);
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__MVS__)
+    return isascii(c) ?
+      static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(c)]) : c;
+#else
+    return (isascii(c) && islower_l(c, _LIBCPP_GET_C_LOCALE)) ? c-'a'+'A' : c;
+#endif
+}
+
+const char*
+ctype<char>::do_toupper(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+        *low = isascii(*low) ?
+          static_cast<char>(_DefaultRuneLocale.__mapupper[static_cast<ptrdiff_t>(*low)]) : *low;
+#elif defined(__NetBSD__)
+        *low = static_cast<char>(__classic_upper_table()[static_cast<unsigned char>(*low)]);
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__MVS__)
+        *low = isascii(*low) ?
+          static_cast<char>(__classic_upper_table()[static_cast<size_t>(*low)]) : *low;
+#else
+        *low = (isascii(*low) && islower_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-'a'+'A' : *low;
+#endif
+    return low;
+}
+
+char
+ctype<char>::do_tolower(char_type c) const
+{
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+    return isascii(c) ?
+      static_cast<char>(_DefaultRuneLocale.__maplower[static_cast<ptrdiff_t>(c)]) : c;
+#elif defined(__NetBSD__)
+    return static_cast<char>(__classic_lower_table()[static_cast<unsigned char>(c)]);
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__MVS__)
+    return isascii(c) ?
+      static_cast<char>(__classic_lower_table()[static_cast<size_t>(c)]) : c;
+#else
+    return (isascii(c) && isupper_l(c, _LIBCPP_GET_C_LOCALE)) ? c-'A'+'a' : c;
+#endif
+}
+
+const char*
+ctype<char>::do_tolower(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+#ifdef _LIBCPP_HAS_DEFAULTRUNELOCALE
+        *low = isascii(*low) ? static_cast<char>(_DefaultRuneLocale.__maplower[static_cast<ptrdiff_t>(*low)]) : *low;
+#elif defined(__NetBSD__)
+        *low = static_cast<char>(__classic_lower_table()[static_cast<unsigned char>(*low)]);
+#elif defined(__GLIBC__) || defined(__EMSCRIPTEN__) || defined(__MVS__)
+        *low = isascii(*low) ? static_cast<char>(__classic_lower_table()[static_cast<size_t>(*low)]) : *low;
+#else
+        *low = (isascii(*low) && isupper_l(*low, _LIBCPP_GET_C_LOCALE)) ? *low-'A'+'a' : *low;
+#endif
+    return low;
+}
+
+char
+ctype<char>::do_widen(char c) const
+{
+    return c;
+}
+
+const char*
+ctype<char>::do_widen(const char* low, const char* high, char_type* dest) const
+{
+    for (; low != high; ++low, ++dest)
+        *dest = *low;
+    return low;
+}
+
+char
+ctype<char>::do_narrow(char_type c, char dfault) const
+{
+    if (isascii(c))
+        return static_cast<char>(c);
+    return dfault;
+}
+
+const char*
+ctype<char>::do_narrow(const char_type* low, const char_type* high, char dfault, char* dest) const
+{
+    for (; low != high; ++low, ++dest)
+        if (isascii(*low))
+            *dest = *low;
+        else
+            *dest = dfault;
+    return low;
+}
+
+#if defined(__EMSCRIPTEN__)
+extern "C" const unsigned short ** __ctype_b_loc();
+extern "C" const int ** __ctype_tolower_loc();
+extern "C" const int ** __ctype_toupper_loc();
+#endif
+
+#ifdef _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE
+const ctype<char>::mask*
+ctype<char>::classic_table() noexcept
+{
+    static _LIBCPP_CONSTEXPR const ctype<char>::mask builtin_table[table_size] = {
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl | space | blank,
+        cntrl | space,                  cntrl | space,
+        cntrl | space,                  cntrl | space,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        cntrl,                          cntrl,
+        space | blank | print,          punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        digit | print | xdigit,         digit | print | xdigit,
+        digit | print | xdigit,         digit | print | xdigit,
+        digit | print | xdigit,         digit | print | xdigit,
+        digit | print | xdigit,         digit | print | xdigit,
+        digit | print | xdigit,         digit | print | xdigit,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  upper | xdigit | print | alpha,
+        upper | xdigit | print | alpha, upper | xdigit | print | alpha,
+        upper | xdigit | print | alpha, upper | xdigit | print | alpha,
+        upper | xdigit | print | alpha, upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          upper | print | alpha,
+        upper | print | alpha,          punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  lower | xdigit | print | alpha,
+        lower | xdigit | print | alpha, lower | xdigit | print | alpha,
+        lower | xdigit | print | alpha, lower | xdigit | print | alpha,
+        lower | xdigit | print | alpha, lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          lower | print | alpha,
+        lower | print | alpha,          punct | print,
+        punct | print,                  punct | print,
+        punct | print,                  cntrl,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    };
+    return builtin_table;
+}
+#else
+const ctype<char>::mask*
+ctype<char>::classic_table() noexcept
+{
+#if defined(__APPLE__) || defined(__FreeBSD__)
+    return _DefaultRuneLocale.__runetype;
+#elif defined(__NetBSD__)
+    return _C_ctype_tab_ + 1;
+#elif defined(__GLIBC__)
+    return _LIBCPP_GET_C_LOCALE->__ctype_b;
+#elif defined(__sun__)
+    return __ctype_mask;
+#elif defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    return __pctype_func();
+#elif defined(__EMSCRIPTEN__)
+    return *__ctype_b_loc();
+#elif defined(_NEWLIB_VERSION)
+    // Newlib has a 257-entry table in ctype_.c, where (char)0 starts at [1].
+    return _ctype_ + 1;
+#elif defined(_AIX)
+    return (const unsigned int *)__lc_ctype_ptr->obj->mask;
+#elif defined(__MVS__)
+# if defined(__NATIVE_ASCII_F)
+    return const_cast<const ctype<char>::mask*> (__OBJ_DATA(__lc_ctype_a)->mask);
+# else
+    return const_cast<const ctype<char>::mask*> (__ctypec);
+# endif
+#else
+    // Platform not supported: abort so the person doing the port knows what to
+    // fix
+# warning  ctype<char>::classic_table() is not implemented
+    printf("ctype<char>::classic_table() is not implemented\n");
+    abort();
+    return NULL;
+#endif
+}
+#endif
+
+#if defined(__GLIBC__)
+const int*
+ctype<char>::__classic_lower_table() noexcept
+{
+    return _LIBCPP_GET_C_LOCALE->__ctype_tolower;
+}
+
+const int*
+ctype<char>::__classic_upper_table() noexcept
+{
+    return _LIBCPP_GET_C_LOCALE->__ctype_toupper;
+}
+#elif defined(__NetBSD__)
+const short*
+ctype<char>::__classic_lower_table() noexcept
+{
+    return _C_tolower_tab_ + 1;
+}
+
+const short*
+ctype<char>::__classic_upper_table() noexcept
+{
+    return _C_toupper_tab_ + 1;
+}
+
+#elif defined(__EMSCRIPTEN__)
+const int*
+ctype<char>::__classic_lower_table() noexcept
+{
+    return *__ctype_tolower_loc();
+}
+
+const int*
+ctype<char>::__classic_upper_table() noexcept
+{
+    return *__ctype_toupper_loc();
+}
+#elif defined(__MVS__)
+const unsigned short*
+ctype<char>::__classic_lower_table() _NOEXCEPT
+{
+# if defined(__NATIVE_ASCII_F)
+  return const_cast<const unsigned short*>(__OBJ_DATA(__lc_ctype_a)->lower);
+# else
+  return const_cast<const unsigned short*>(__ctype + __TOLOWER_INDEX);
+# endif
+}
+const unsigned short *
+ctype<char>::__classic_upper_table() _NOEXCEPT
+{
+# if defined(__NATIVE_ASCII_F)
+  return const_cast<const unsigned short*>(__OBJ_DATA(__lc_ctype_a)->upper);
+# else
+  return const_cast<const unsigned short*>(__ctype + __TOUPPER_INDEX);
+# endif
+}
+#endif // __GLIBC__ || __NETBSD__ || __EMSCRIPTEN__ || __MVS__
+
+// template <> class ctype_byname<char>
+
+ctype_byname<char>::ctype_byname(const char* name, size_t refs)
+    : ctype<char>(0, false, refs),
+      __l_(newlocale(LC_ALL_MASK, name, 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("ctype_byname<char>::ctype_byname"
+                            " failed to construct for " + string(name));
+}
+
+ctype_byname<char>::ctype_byname(const string& name, size_t refs)
+    : ctype<char>(0, false, refs),
+      __l_(newlocale(LC_ALL_MASK, name.c_str(), 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("ctype_byname<char>::ctype_byname"
+                            " failed to construct for " + name);
+}
+
+ctype_byname<char>::~ctype_byname()
+{
+    freelocale(__l_);
+}
+
+char
+ctype_byname<char>::do_toupper(char_type c) const
+{
+    return static_cast<char>(toupper_l(static_cast<unsigned char>(c), __l_));
+}
+
+const char*
+ctype_byname<char>::do_toupper(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+        *low = static_cast<char>(toupper_l(static_cast<unsigned char>(*low), __l_));
+    return low;
+}
+
+char
+ctype_byname<char>::do_tolower(char_type c) const
+{
+    return static_cast<char>(tolower_l(static_cast<unsigned char>(c), __l_));
+}
+
+const char*
+ctype_byname<char>::do_tolower(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+        *low = static_cast<char>(tolower_l(static_cast<unsigned char>(*low), __l_));
+    return low;
+}
+
+// template <> class ctype_byname<wchar_t>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+ctype_byname<wchar_t>::ctype_byname(const char* name, size_t refs)
+    : ctype<wchar_t>(refs),
+      __l_(newlocale(LC_ALL_MASK, name, 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("ctype_byname<wchar_t>::ctype_byname"
+                            " failed to construct for " + string(name));
+}
+
+ctype_byname<wchar_t>::ctype_byname(const string& name, size_t refs)
+    : ctype<wchar_t>(refs),
+      __l_(newlocale(LC_ALL_MASK, name.c_str(), 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("ctype_byname<wchar_t>::ctype_byname"
+                            " failed to construct for " + name);
+}
+
+ctype_byname<wchar_t>::~ctype_byname()
+{
+    freelocale(__l_);
+}
+
+bool
+ctype_byname<wchar_t>::do_is(mask m, char_type c) const
+{
+#ifdef _LIBCPP_WCTYPE_IS_MASK
+    return static_cast<bool>(iswctype_l(c, m, __l_));
+#else
+    bool result = false;
+    wint_t ch = static_cast<wint_t>(c);
+    if ((m & space) == space) result |= (iswspace_l(ch, __l_) != 0);
+    if ((m & print) == print) result |= (iswprint_l(ch, __l_) != 0);
+    if ((m & cntrl) == cntrl) result |= (iswcntrl_l(ch, __l_) != 0);
+    if ((m & upper) == upper) result |= (iswupper_l(ch, __l_) != 0);
+    if ((m & lower) == lower) result |= (iswlower_l(ch, __l_) != 0);
+    if ((m & alpha) == alpha) result |= (iswalpha_l(ch, __l_) != 0);
+    if ((m & digit) == digit) result |= (iswdigit_l(ch, __l_) != 0);
+    if ((m & punct) == punct) result |= (iswpunct_l(ch, __l_) != 0);
+    if ((m & xdigit) == xdigit) result |= (iswxdigit_l(ch, __l_) != 0);
+    if ((m & blank) == blank) result |= (iswblank_l(ch, __l_) != 0);
+    return result;
+#endif
+}
+
+const wchar_t*
+ctype_byname<wchar_t>::do_is(const char_type* low, const char_type* high, mask* vec) const
+{
+    for (; low != high; ++low, ++vec)
+    {
+        if (isascii(*low))
+            *vec = static_cast<mask>(ctype<char>::classic_table()[*low]);
+        else
+        {
+            *vec = 0;
+            wint_t ch = static_cast<wint_t>(*low);
+            if (iswspace_l(ch, __l_))
+                *vec |= space;
+#ifndef _LIBCPP_CTYPE_MASK_IS_COMPOSITE_PRINT
+            if (iswprint_l(ch, __l_))
+                *vec |= print;
+#endif
+            if (iswcntrl_l(ch, __l_))
+                *vec |= cntrl;
+            if (iswupper_l(ch, __l_))
+                *vec |= upper;
+            if (iswlower_l(ch, __l_))
+                *vec |= lower;
+#ifndef _LIBCPP_CTYPE_MASK_IS_COMPOSITE_ALPHA
+            if (iswalpha_l(ch, __l_))
+                *vec |= alpha;
+#endif
+            if (iswdigit_l(ch, __l_))
+                *vec |= digit;
+            if (iswpunct_l(ch, __l_))
+                *vec |= punct;
+#ifndef _LIBCPP_CTYPE_MASK_IS_COMPOSITE_XDIGIT
+            if (iswxdigit_l(ch, __l_))
+                *vec |= xdigit;
+#endif
+#if !defined(__sun__)
+            if (iswblank_l(ch, __l_))
+                *vec |= blank;
+#endif
+        }
+    }
+    return low;
+}
+
+const wchar_t*
+ctype_byname<wchar_t>::do_scan_is(mask m, const char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+    {
+#ifdef _LIBCPP_WCTYPE_IS_MASK
+        if (iswctype_l(*low, m, __l_))
+            break;
+#else
+        wint_t ch = static_cast<wint_t>(*low);
+        if ((m & space) == space && iswspace_l(ch, __l_)) break;
+        if ((m & print) == print && iswprint_l(ch, __l_)) break;
+        if ((m & cntrl) == cntrl && iswcntrl_l(ch, __l_)) break;
+        if ((m & upper) == upper && iswupper_l(ch, __l_)) break;
+        if ((m & lower) == lower && iswlower_l(ch, __l_)) break;
+        if ((m & alpha) == alpha && iswalpha_l(ch, __l_)) break;
+        if ((m & digit) == digit && iswdigit_l(ch, __l_)) break;
+        if ((m & punct) == punct && iswpunct_l(ch, __l_)) break;
+        if ((m & xdigit) == xdigit && iswxdigit_l(ch, __l_)) break;
+        if ((m & blank) == blank && iswblank_l(ch, __l_)) break;
+#endif
+    }
+    return low;
+}
+
+const wchar_t*
+ctype_byname<wchar_t>::do_scan_not(mask m, const char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+    {
+#ifdef _LIBCPP_WCTYPE_IS_MASK
+        if (!iswctype_l(*low, m, __l_))
+            break;
+#else
+        wint_t ch = static_cast<wint_t>(*low);
+        if ((m & space) == space && iswspace_l(ch, __l_)) continue;
+        if ((m & print) == print && iswprint_l(ch, __l_)) continue;
+        if ((m & cntrl) == cntrl && iswcntrl_l(ch, __l_)) continue;
+        if ((m & upper) == upper && iswupper_l(ch, __l_)) continue;
+        if ((m & lower) == lower && iswlower_l(ch, __l_)) continue;
+        if ((m & alpha) == alpha && iswalpha_l(ch, __l_)) continue;
+        if ((m & digit) == digit && iswdigit_l(ch, __l_)) continue;
+        if ((m & punct) == punct && iswpunct_l(ch, __l_)) continue;
+        if ((m & xdigit) == xdigit && iswxdigit_l(ch, __l_)) continue;
+        if ((m & blank) == blank && iswblank_l(ch, __l_)) continue;
+        break;
+#endif
+    }
+    return low;
+}
+
+wchar_t
+ctype_byname<wchar_t>::do_toupper(char_type c) const
+{
+    return towupper_l(c, __l_);
+}
+
+const wchar_t*
+ctype_byname<wchar_t>::do_toupper(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+        *low = towupper_l(*low, __l_);
+    return low;
+}
+
+wchar_t
+ctype_byname<wchar_t>::do_tolower(char_type c) const
+{
+    return towlower_l(c, __l_);
+}
+
+const wchar_t*
+ctype_byname<wchar_t>::do_tolower(char_type* low, const char_type* high) const
+{
+    for (; low != high; ++low)
+        *low = towlower_l(*low, __l_);
+    return low;
+}
+
+wchar_t
+ctype_byname<wchar_t>::do_widen(char c) const
+{
+    return __libcpp_btowc_l(c, __l_);
+}
+
+const char*
+ctype_byname<wchar_t>::do_widen(const char* low, const char* high, char_type* dest) const
+{
+    for (; low != high; ++low, ++dest)
+        *dest = __libcpp_btowc_l(*low, __l_);
+    return low;
+}
+
+char
+ctype_byname<wchar_t>::do_narrow(char_type c, char dfault) const
+{
+    int r = __libcpp_wctob_l(c, __l_);
+    return (r != EOF) ? static_cast<char>(r) : dfault;
+}
+
+const wchar_t*
+ctype_byname<wchar_t>::do_narrow(const char_type* low, const char_type* high, char dfault, char* dest) const
+{
+    for (; low != high; ++low, ++dest)
+    {
+        int r = __libcpp_wctob_l(*low, __l_);
+        *dest = (r != EOF) ? static_cast<char>(r) : dfault;
+    }
+    return low;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// template <> class codecvt<char, char, mbstate_t>
+
+locale::id codecvt<char, char, mbstate_t>::id;
+
+codecvt<char, char, mbstate_t>::~codecvt()
+{
+}
+
+codecvt<char, char, mbstate_t>::result
+codecvt<char, char, mbstate_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type*, const intern_type*& frm_nxt,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    return noconv;
+}
+
+codecvt<char, char, mbstate_t>::result
+codecvt<char, char, mbstate_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type*, const extern_type*& frm_nxt,
+    intern_type* to, intern_type*, intern_type*& to_nxt) const
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    return noconv;
+}
+
+codecvt<char, char, mbstate_t>::result
+codecvt<char, char, mbstate_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+codecvt<char, char, mbstate_t>::do_encoding() const noexcept
+{
+    return 1;
+}
+
+bool
+codecvt<char, char, mbstate_t>::do_always_noconv() const noexcept
+{
+    return true;
+}
+
+int
+codecvt<char, char, mbstate_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* end, size_t mx) const
+{
+    return static_cast<int>(min<size_t>(mx, static_cast<size_t>(end-frm)));
+}
+
+int
+codecvt<char, char, mbstate_t>::do_max_length() const noexcept
+{
+    return 1;
+}
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+locale::id codecvt<wchar_t, char, mbstate_t>::id;
+
+codecvt<wchar_t, char, mbstate_t>::codecvt(size_t refs)
+    : locale::facet(refs),
+      __l_(_LIBCPP_GET_C_LOCALE)
+{
+}
+
+codecvt<wchar_t, char, mbstate_t>::codecvt(const char* nm, size_t refs)
+    : locale::facet(refs),
+      __l_(newlocale(LC_ALL_MASK, nm, 0))
+{
+    if (__l_ == 0)
+        __throw_runtime_error("codecvt_byname<wchar_t, char, mbstate_t>::codecvt_byname"
+                            " failed to construct for " + string(nm));
+}
+
+codecvt<wchar_t, char, mbstate_t>::~codecvt()
+{
+    if (__l_ != _LIBCPP_GET_C_LOCALE)
+        freelocale(__l_);
+}
+
+codecvt<wchar_t, char, mbstate_t>::result
+codecvt<wchar_t, char, mbstate_t>::do_out(state_type& st,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    // look for first internal null in frm
+    const intern_type* fend = frm;
+    for (; fend != frm_end; ++fend)
+        if (*fend == 0)
+            break;
+    // loop over all null-terminated sequences in frm
+    to_nxt = to;
+    for (frm_nxt = frm; frm != frm_end && to != to_end; frm = frm_nxt, to = to_nxt)
+    {
+        // save state in case it is needed to recover to_nxt on error
+        mbstate_t save_state = st;
+        size_t n = __libcpp_wcsnrtombs_l(to, &frm_nxt, static_cast<size_t>(fend-frm),
+                                     static_cast<size_t>(to_end-to), &st, __l_);
+        if (n == size_t(-1))
+        {
+            // need to recover to_nxt
+            for (to_nxt = to; frm != frm_nxt; ++frm)
+            {
+                n = __libcpp_wcrtomb_l(to_nxt, *frm, &save_state, __l_);
+                if (n == size_t(-1))
+                    break;
+                to_nxt += n;
+            }
+            frm_nxt = frm;
+            return error;
+        }
+        if (n == 0)
+            return partial;
+        to_nxt += n;
+        if (to_nxt == to_end)
+            break;
+        if (fend != frm_end)  // set up next null terminated sequence
+        {
+            // Try to write the terminating null
+            extern_type tmp[MB_LEN_MAX];
+            n = __libcpp_wcrtomb_l(tmp, intern_type(), &st, __l_);
+            if (n == size_t(-1))  // on error
+                return error;
+            if (n > static_cast<size_t>(to_end-to_nxt))  // is there room?
+                return partial;
+            for (extern_type* p = tmp; n; --n)  // write it
+                *to_nxt++ = *p++;
+            ++frm_nxt;
+            // look for next null in frm
+            for (fend = frm_nxt; fend != frm_end; ++fend)
+                if (*fend == 0)
+                    break;
+        }
+    }
+    return frm_nxt == frm_end ? ok : partial;
+}
+
+codecvt<wchar_t, char, mbstate_t>::result
+codecvt<wchar_t, char, mbstate_t>::do_in(state_type& st,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    // look for first internal null in frm
+    const extern_type* fend = frm;
+    for (; fend != frm_end; ++fend)
+        if (*fend == 0)
+            break;
+    // loop over all null-terminated sequences in frm
+    to_nxt = to;
+    for (frm_nxt = frm; frm != frm_end && to != to_end; frm = frm_nxt, to = to_nxt)
+    {
+        // save state in case it is needed to recover to_nxt on error
+        mbstate_t save_state = st;
+        size_t n = __libcpp_mbsnrtowcs_l(to, &frm_nxt, static_cast<size_t>(fend-frm),
+                                     static_cast<size_t>(to_end-to), &st, __l_);
+        if (n == size_t(-1))
+        {
+            // need to recover to_nxt
+            for (to_nxt = to; frm != frm_nxt; ++to_nxt)
+            {
+                n = __libcpp_mbrtowc_l(to_nxt, frm, static_cast<size_t>(fend-frm),
+                                   &save_state, __l_);
+                switch (n)
+                {
+                case 0:
+                    ++frm;
+                    break;
+                case size_t(-1):
+                    frm_nxt = frm;
+                    return error;
+                case size_t(-2):
+                    frm_nxt = frm;
+                    return partial;
+                default:
+                    frm += n;
+                    break;
+                }
+            }
+            frm_nxt = frm;
+            return frm_nxt == frm_end ? ok : partial;
+        }
+        if (n == size_t(-1))
+            return error;
+        to_nxt += n;
+        if (to_nxt == to_end)
+            break;
+        if (fend != frm_end)  // set up next null terminated sequence
+        {
+            // Try to write the terminating null
+            n = __libcpp_mbrtowc_l(to_nxt, frm_nxt, 1, &st, __l_);
+            if (n != 0)  // on error
+                return error;
+            ++to_nxt;
+            ++frm_nxt;
+            // look for next null in frm
+            for (fend = frm_nxt; fend != frm_end; ++fend)
+                if (*fend == 0)
+                    break;
+        }
+    }
+    return frm_nxt == frm_end ? ok : partial;
+}
+
+codecvt<wchar_t, char, mbstate_t>::result
+codecvt<wchar_t, char, mbstate_t>::do_unshift(state_type& st,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    extern_type tmp[MB_LEN_MAX];
+    size_t n = __libcpp_wcrtomb_l(tmp, intern_type(), &st, __l_);
+    if (n == size_t(-1) || n == 0)  // on error
+        return error;
+    --n;
+    if (n > static_cast<size_t>(to_end-to_nxt))  // is there room?
+        return partial;
+    for (extern_type* p = tmp; n; --n)  // write it
+        *to_nxt++ = *p++;
+    return ok;
+}
+
+int
+codecvt<wchar_t, char, mbstate_t>::do_encoding() const noexcept
+{
+    if (__libcpp_mbtowc_l(nullptr, nullptr, MB_LEN_MAX, __l_) != 0)
+        return -1;
+
+    // stateless encoding
+    if (__l_ == 0 || __libcpp_mb_cur_max_l(__l_) == 1)  // there are no known constant length encodings
+        return 1;                // which take more than 1 char to form a wchar_t
+    return 0;
+}
+
+bool
+codecvt<wchar_t, char, mbstate_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+codecvt<wchar_t, char, mbstate_t>::do_length(state_type& st,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    int nbytes = 0;
+    for (size_t nwchar_t = 0; nwchar_t < mx && frm != frm_end; ++nwchar_t)
+    {
+        size_t n = __libcpp_mbrlen_l(frm, static_cast<size_t>(frm_end-frm), &st, __l_);
+        switch (n)
+        {
+        case 0:
+            ++nbytes;
+            ++frm;
+            break;
+        case size_t(-1):
+        case size_t(-2):
+            return nbytes;
+        default:
+            nbytes += n;
+            frm += n;
+            break;
+        }
+    }
+    return nbytes;
+}
+
+int
+codecvt<wchar_t, char, mbstate_t>::do_max_length() const noexcept
+{
+    return __l_ == 0 ? 1 : static_cast<int>(__libcpp_mb_cur_max_l(__l_));
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+//                                     Valid UTF ranges
+//     UTF-32               UTF-16                          UTF-8               # of code points
+//                     first      second       first   second    third   fourth
+// 000000 - 00007F  0000 - 007F               00 - 7F                                 127
+// 000080 - 0007FF  0080 - 07FF               C2 - DF, 80 - BF                       1920
+// 000800 - 000FFF  0800 - 0FFF               E0 - E0, A0 - BF, 80 - BF              2048
+// 001000 - 00CFFF  1000 - CFFF               E1 - EC, 80 - BF, 80 - BF             49152
+// 00D000 - 00D7FF  D000 - D7FF               ED - ED, 80 - 9F, 80 - BF              2048
+// 00D800 - 00DFFF                invalid
+// 00E000 - 00FFFF  E000 - FFFF               EE - EF, 80 - BF, 80 - BF              8192
+// 010000 - 03FFFF  D800 - D8BF, DC00 - DFFF  F0 - F0, 90 - BF, 80 - BF, 80 - BF   196608
+// 040000 - 0FFFFF  D8C0 - DBBF, DC00 - DFFF  F1 - F3, 80 - BF, 80 - BF, 80 - BF   786432
+// 100000 - 10FFFF  DBC0 - DBFF, DC00 - DFFF  F4 - F4, 80 - 8F, 80 - BF, 80 - BF    65536
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+static
+codecvt_base::result
+utf16_to_utf8(const uint16_t* frm, const uint16_t* frm_end, const uint16_t*& frm_nxt,
+              uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+              unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 3)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xEF);
+        *to_nxt++ = static_cast<uint8_t>(0xBB);
+        *to_nxt++ = static_cast<uint8_t>(0xBF);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint16_t wc1 = *frm_nxt;
+        if (wc1 > Maxcode)
+            return codecvt_base::error;
+        if (wc1 < 0x0080)
+        {
+            if (to_end-to_nxt < 1)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(wc1);
+        }
+        else if (wc1 < 0x0800)
+        {
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xC0 | (wc1 >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | (wc1 & 0x03F));
+        }
+        else if (wc1 < 0xD800)
+        {
+            if (to_end-to_nxt < 3)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xE0 |  (wc1 >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc1 & 0x0FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc1 & 0x003F));
+        }
+        else if (wc1 < 0xDC00)
+        {
+            if (frm_end-frm_nxt < 2)
+                return codecvt_base::partial;
+            uint16_t wc2 = frm_nxt[1];
+            if ((wc2 & 0xFC00) != 0xDC00)
+                return codecvt_base::error;
+            if (to_end-to_nxt < 4)
+                return codecvt_base::partial;
+            if (((((wc1 & 0x03C0UL) >> 6) + 1) << 16) +
+                ((wc1 & 0x003FUL) << 10) + (wc2 & 0x03FF) > Maxcode)
+                return codecvt_base::error;
+            ++frm_nxt;
+            uint8_t z = ((wc1 & 0x03C0) >> 6) + 1;
+            *to_nxt++ = static_cast<uint8_t>(0xF0 | (z >> 2));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((z & 0x03) << 4)     | ((wc1 & 0x003C) >> 2));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc1 & 0x0003) << 4) | ((wc2 & 0x03C0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc2 & 0x003F));
+        }
+        else if (wc1 < 0xE000)
+        {
+            return codecvt_base::error;
+        }
+        else
+        {
+            if (to_end-to_nxt < 3)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xE0 |  (wc1 >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc1 & 0x0FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc1 & 0x003F));
+        }
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf16_to_utf8(const uint32_t* frm, const uint32_t* frm_end, const uint32_t*& frm_nxt,
+              uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+              unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 3)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xEF);
+        *to_nxt++ = static_cast<uint8_t>(0xBB);
+        *to_nxt++ = static_cast<uint8_t>(0xBF);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint16_t wc1 = static_cast<uint16_t>(*frm_nxt);
+        if (wc1 > Maxcode)
+            return codecvt_base::error;
+        if (wc1 < 0x0080)
+        {
+            if (to_end-to_nxt < 1)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(wc1);
+        }
+        else if (wc1 < 0x0800)
+        {
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xC0 | (wc1 >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | (wc1 & 0x03F));
+        }
+        else if (wc1 < 0xD800)
+        {
+            if (to_end-to_nxt < 3)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xE0 |  (wc1 >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc1 & 0x0FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc1 & 0x003F));
+        }
+        else if (wc1 < 0xDC00)
+        {
+            if (frm_end-frm_nxt < 2)
+                return codecvt_base::partial;
+            uint16_t wc2 = static_cast<uint16_t>(frm_nxt[1]);
+            if ((wc2 & 0xFC00) != 0xDC00)
+                return codecvt_base::error;
+            if (to_end-to_nxt < 4)
+                return codecvt_base::partial;
+            if (((((wc1 & 0x03C0UL) >> 6) + 1) << 16) +
+                ((wc1 & 0x003FUL) << 10) + (wc2 & 0x03FF) > Maxcode)
+                return codecvt_base::error;
+            ++frm_nxt;
+            uint8_t z = ((wc1 & 0x03C0) >> 6) + 1;
+            *to_nxt++ = static_cast<uint8_t>(0xF0 | (z >> 2));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((z & 0x03) << 4)     | ((wc1 & 0x003C) >> 2));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc1 & 0x0003) << 4) | ((wc2 & 0x03C0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc2 & 0x003F));
+        }
+        else if (wc1 < 0xE000)
+        {
+            return codecvt_base::error;
+        }
+        else
+        {
+            if (to_end-to_nxt < 3)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xE0 |  (wc1 >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc1 & 0x0FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc1 & 0x003F));
+        }
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf8_to_utf16(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+              uint16_t* to, uint16_t* to_end, uint16_t*& to_nxt,
+              unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (; frm_nxt < frm_end && to_nxt < to_end; ++to_nxt)
+    {
+        uint8_t c1 = *frm_nxt;
+        if (c1 > Maxcode)
+            return codecvt_base::error;
+        if (c1 < 0x80)
+        {
+            *to_nxt = static_cast<uint16_t>(c1);
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            return codecvt_base::error;
+        }
+        else if (c1 < 0xE0)
+        {
+            if (frm_end-frm_nxt < 2)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            if ((c2 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x1F) << 6) | (c2 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return codecvt_base::error;
+                 break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x0F) << 12)
+                                             | ((c2 & 0x3F) << 6)
+                                             |  (c3 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 3;
+        }
+        else if (c1 < 0xF5)
+        {
+            if (frm_end-frm_nxt < 4)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            uint8_t c4 = frm_nxt[3];
+            switch (c1)
+            {
+            case 0xF0:
+                if (!(0x90 <= c2 && c2 <= 0xBF))
+                    return codecvt_base::error;
+                 break;
+            case 0xF4:
+                if ((c2 & 0xF0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80 || (c4 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            if ((((c1 & 7UL) << 18) +
+                ((c2 & 0x3FUL) << 12) +
+                ((c3 & 0x3FUL) << 6) + (c4 & 0x3F)) > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint16_t>(
+                    0xD800
+                  | (((((c1 & 0x07) << 2) | ((c2 & 0x30) >> 4)) - 1) << 6)
+                  | ((c2 & 0x0F) << 2)
+                  | ((c3 & 0x30) >> 4));
+            *++to_nxt = static_cast<uint16_t>(
+                    0xDC00
+                  | ((c3 & 0x0F) << 6)
+                  |  (c4 & 0x3F));
+            frm_nxt += 4;
+        }
+        else
+        {
+            return codecvt_base::error;
+        }
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf8_to_utf16(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+              uint32_t* to, uint32_t* to_end, uint32_t*& to_nxt,
+              unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (; frm_nxt < frm_end && to_nxt < to_end; ++to_nxt)
+    {
+        uint8_t c1 = *frm_nxt;
+        if (c1 > Maxcode)
+            return codecvt_base::error;
+        if (c1 < 0x80)
+        {
+            *to_nxt = static_cast<uint32_t>(c1);
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            return codecvt_base::error;
+        }
+        else if (c1 < 0xE0)
+        {
+            if (frm_end-frm_nxt < 2)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            if ((c2 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x1F) << 6) | (c2 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint32_t>(t);
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return codecvt_base::error;
+                 break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x0F) << 12)
+                                             | ((c2 & 0x3F) << 6)
+                                             |  (c3 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint32_t>(t);
+            frm_nxt += 3;
+        }
+        else if (c1 < 0xF5)
+        {
+            if (frm_end-frm_nxt < 4)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            uint8_t c4 = frm_nxt[3];
+            switch (c1)
+            {
+            case 0xF0:
+                if (!(0x90 <= c2 && c2 <= 0xBF))
+                    return codecvt_base::error;
+                 break;
+            case 0xF4:
+                if ((c2 & 0xF0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80 || (c4 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            if ((((c1 & 7UL) << 18) +
+                ((c2 & 0x3FUL) << 12) +
+                ((c3 & 0x3FUL) << 6) + (c4 & 0x3F)) > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint32_t>(
+                    0xD800
+                  | (((((c1 & 0x07) << 2) | ((c2 & 0x30) >> 4)) - 1) << 6)
+                  | ((c2 & 0x0F) << 2)
+                  | ((c3 & 0x30) >> 4));
+            *++to_nxt = static_cast<uint32_t>(
+                    0xDC00
+                  | ((c3 & 0x0F) << 6)
+                  |  (c4 & 0x3F));
+            frm_nxt += 4;
+        }
+        else
+        {
+            return codecvt_base::error;
+        }
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf8_to_utf16_length(const uint8_t* frm, const uint8_t* frm_end,
+                     size_t mx, unsigned long Maxcode = 0x10FFFF,
+                     codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (size_t nchar16_t = 0; frm_nxt < frm_end && nchar16_t < mx; ++nchar16_t)
+    {
+        uint8_t c1 = *frm_nxt;
+        if (c1 > Maxcode)
+            break;
+        if (c1 < 0x80)
+        {
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            break;
+        }
+        else if (c1 < 0xE0)
+        {
+            if ((frm_end-frm_nxt < 2) || (frm_nxt[1] & 0xC0) != 0x80)
+                break;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x1F) << 6) | (frm_nxt[1] & 0x3F));
+            if (t > Maxcode)
+                break;
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                break;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return static_cast<int>(frm_nxt - frm);
+                break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                break;
+            if ((((c1 & 0x0Fu) << 12) | ((c2 & 0x3Fu) << 6) | (c3 & 0x3Fu)) > Maxcode)
+                break;
+            frm_nxt += 3;
+        }
+        else if (c1 < 0xF5)
+        {
+            if (frm_end-frm_nxt < 4 || mx-nchar16_t < 2)
+                break;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            uint8_t c4 = frm_nxt[3];
+            switch (c1)
+            {
+            case 0xF0:
+                if (!(0x90 <= c2 && c2 <= 0xBF))
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            case 0xF4:
+                if ((c2 & 0xF0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80 || (c4 & 0xC0) != 0x80)
+                break;
+            if ((((c1 & 7UL) << 18) +
+                ((c2 & 0x3FUL) << 12) +
+                ((c3 & 0x3FUL) << 6) + (c4 & 0x3F)) > Maxcode)
+                break;
+            ++nchar16_t;
+            frm_nxt += 4;
+        }
+        else
+        {
+            break;
+        }
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+static
+codecvt_base::result
+ucs4_to_utf8(const uint32_t* frm, const uint32_t* frm_end, const uint32_t*& frm_nxt,
+             uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+             unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 3)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xEF);
+        *to_nxt++ = static_cast<uint8_t>(0xBB);
+        *to_nxt++ = static_cast<uint8_t>(0xBF);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint32_t wc = *frm_nxt;
+        if ((wc & 0xFFFFF800) == 0x00D800 || wc > Maxcode)
+            return codecvt_base::error;
+        if (wc < 0x000080)
+        {
+            if (to_end-to_nxt < 1)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(wc);
+        }
+        else if (wc < 0x000800)
+        {
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xC0 | (wc >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | (wc & 0x03F));
+        }
+        else if (wc < 0x010000)
+        {
+            if (to_end-to_nxt < 3)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xE0 |  (wc >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc & 0x0FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc & 0x003F));
+        }
+        else // if (wc < 0x110000)
+        {
+            if (to_end-to_nxt < 4)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xF0 |  (wc >> 18));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc & 0x03F000) >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc & 0x000FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc & 0x00003F));
+        }
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf8_to_ucs4(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+             uint32_t* to, uint32_t* to_end, uint32_t*& to_nxt,
+             unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (; frm_nxt < frm_end && to_nxt < to_end; ++to_nxt)
+    {
+        uint8_t c1 = static_cast<uint8_t>(*frm_nxt);
+        if (c1 < 0x80)
+        {
+            if (c1 > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint32_t>(c1);
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            return codecvt_base::error;
+        }
+        else if (c1 < 0xE0)
+        {
+            if (frm_end-frm_nxt < 2)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            if ((c2 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint32_t t = static_cast<uint32_t>(((c1 & 0x1F) << 6)
+                                              | (c2 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return codecvt_base::error;
+                 break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint32_t t = static_cast<uint32_t>(((c1 & 0x0F) << 12)
+                                             | ((c2 & 0x3F) << 6)
+                                             |  (c3 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 3;
+        }
+        else if (c1 < 0xF5)
+        {
+            if (frm_end-frm_nxt < 4)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            uint8_t c4 = frm_nxt[3];
+            switch (c1)
+            {
+            case 0xF0:
+                if (!(0x90 <= c2 && c2 <= 0xBF))
+                    return codecvt_base::error;
+                 break;
+            case 0xF4:
+                if ((c2 & 0xF0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80 || (c4 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint32_t t = static_cast<uint32_t>(((c1 & 0x07) << 18)
+                                             | ((c2 & 0x3F) << 12)
+                                             | ((c3 & 0x3F) << 6)
+                                             |  (c4 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 4;
+        }
+        else
+        {
+            return codecvt_base::error;
+        }
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf8_to_ucs4_length(const uint8_t* frm, const uint8_t* frm_end,
+                    size_t mx, unsigned long Maxcode = 0x10FFFF,
+                    codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (size_t nchar32_t = 0; frm_nxt < frm_end && nchar32_t < mx; ++nchar32_t)
+    {
+        uint8_t c1 = static_cast<uint8_t>(*frm_nxt);
+        if (c1 < 0x80)
+        {
+            if (c1 > Maxcode)
+                break;
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            break;
+        }
+        else if (c1 < 0xE0)
+        {
+            if ((frm_end-frm_nxt < 2) || ((frm_nxt[1] & 0xC0) != 0x80))
+                break;
+            if ((((c1 & 0x1Fu) << 6) | (frm_nxt[1] & 0x3Fu)) > Maxcode)
+                break;
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                break;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return static_cast<int>(frm_nxt - frm);
+                break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                break;
+            if ((((c1 & 0x0Fu) << 12) | ((c2 & 0x3Fu) << 6) | (c3 & 0x3Fu)) > Maxcode)
+                break;
+            frm_nxt += 3;
+        }
+        else if (c1 < 0xF5)
+        {
+            if (frm_end-frm_nxt < 4)
+                break;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            uint8_t c4 = frm_nxt[3];
+            switch (c1)
+            {
+            case 0xF0:
+                if (!(0x90 <= c2 && c2 <= 0xBF))
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            case 0xF4:
+                if ((c2 & 0xF0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80 || (c4 & 0xC0) != 0x80)
+                break;
+            if ((((c1 & 0x07u) << 18) | ((c2 & 0x3Fu) << 12) |
+                 ((c3 & 0x3Fu) << 6)  |  (c4 & 0x3Fu)) > Maxcode)
+                break;
+            frm_nxt += 4;
+        }
+        else
+        {
+            break;
+        }
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+static
+codecvt_base::result
+ucs2_to_utf8(const uint16_t* frm, const uint16_t* frm_end, const uint16_t*& frm_nxt,
+             uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+             unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 3)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xEF);
+        *to_nxt++ = static_cast<uint8_t>(0xBB);
+        *to_nxt++ = static_cast<uint8_t>(0xBF);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint16_t wc = *frm_nxt;
+        if ((wc & 0xF800) == 0xD800 || wc > Maxcode)
+            return codecvt_base::error;
+        if (wc < 0x0080)
+        {
+            if (to_end-to_nxt < 1)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(wc);
+        }
+        else if (wc < 0x0800)
+        {
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xC0 | (wc >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | (wc & 0x03F));
+        }
+        else // if (wc <= 0xFFFF)
+        {
+            if (to_end-to_nxt < 3)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(0xE0 |  (wc >> 12));
+            *to_nxt++ = static_cast<uint8_t>(0x80 | ((wc & 0x0FC0) >> 6));
+            *to_nxt++ = static_cast<uint8_t>(0x80 |  (wc & 0x003F));
+        }
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf8_to_ucs2(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+             uint16_t* to, uint16_t* to_end, uint16_t*& to_nxt,
+             unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (; frm_nxt < frm_end && to_nxt < to_end; ++to_nxt)
+    {
+        uint8_t c1 = static_cast<uint8_t>(*frm_nxt);
+        if (c1 < 0x80)
+        {
+            if (c1 > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint16_t>(c1);
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            return codecvt_base::error;
+        }
+        else if (c1 < 0xE0)
+        {
+            if (frm_end-frm_nxt < 2)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            if ((c2 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x1F) << 6)
+                                              | (c2 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                return codecvt_base::partial;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return codecvt_base::error;
+                 break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return codecvt_base::error;
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                return codecvt_base::error;
+            uint16_t t = static_cast<uint16_t>(((c1 & 0x0F) << 12)
+                                             | ((c2 & 0x3F) << 6)
+                                             |  (c3 & 0x3F));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 3;
+        }
+        else
+        {
+            return codecvt_base::error;
+        }
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf8_to_ucs2_length(const uint8_t* frm, const uint8_t* frm_end,
+                    size_t mx, unsigned long Maxcode = 0x10FFFF,
+                    codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 3 && frm_nxt[0] == 0xEF && frm_nxt[1] == 0xBB &&
+                                                          frm_nxt[2] == 0xBF)
+            frm_nxt += 3;
+    }
+    for (size_t nchar32_t = 0; frm_nxt < frm_end && nchar32_t < mx; ++nchar32_t)
+    {
+        uint8_t c1 = static_cast<uint8_t>(*frm_nxt);
+        if (c1 < 0x80)
+        {
+            if (c1 > Maxcode)
+                break;
+            ++frm_nxt;
+        }
+        else if (c1 < 0xC2)
+        {
+            break;
+        }
+        else if (c1 < 0xE0)
+        {
+            if ((frm_end-frm_nxt < 2) || ((frm_nxt[1] & 0xC0) != 0x80))
+                break;
+            if ((((c1 & 0x1Fu) << 6) | (frm_nxt[1] & 0x3Fu)) > Maxcode)
+                break;
+            frm_nxt += 2;
+        }
+        else if (c1 < 0xF0)
+        {
+            if (frm_end-frm_nxt < 3)
+                break;
+            uint8_t c2 = frm_nxt[1];
+            uint8_t c3 = frm_nxt[2];
+            switch (c1)
+            {
+            case 0xE0:
+                if ((c2 & 0xE0) != 0xA0)
+                    return static_cast<int>(frm_nxt - frm);
+                break;
+            case 0xED:
+                if ((c2 & 0xE0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            default:
+                if ((c2 & 0xC0) != 0x80)
+                    return static_cast<int>(frm_nxt - frm);
+                 break;
+            }
+            if ((c3 & 0xC0) != 0x80)
+                break;
+            if ((((c1 & 0x0Fu) << 12) | ((c2 & 0x3Fu) << 6) | (c3 & 0x3Fu)) > Maxcode)
+                break;
+            frm_nxt += 3;
+        }
+        else
+        {
+            break;
+        }
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+static
+codecvt_base::result
+ucs4_to_utf16be(const uint32_t* frm, const uint32_t* frm_end, const uint32_t*& frm_nxt,
+                uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 2)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xFE);
+        *to_nxt++ = static_cast<uint8_t>(0xFF);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint32_t wc = *frm_nxt;
+        if ((wc & 0xFFFFF800) == 0x00D800 || wc > Maxcode)
+            return codecvt_base::error;
+        if (wc < 0x010000)
+        {
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(wc >> 8);
+            *to_nxt++ = static_cast<uint8_t>(wc);
+        }
+        else
+        {
+            if (to_end-to_nxt < 4)
+                return codecvt_base::partial;
+            uint16_t t = static_cast<uint16_t>(
+                    0xD800
+                  | ((((wc & 0x1F0000) >> 16) - 1) << 6)
+                  |   ((wc & 0x00FC00) >> 10));
+            *to_nxt++ = static_cast<uint8_t>(t >> 8);
+            *to_nxt++ = static_cast<uint8_t>(t);
+            t = static_cast<uint16_t>(0xDC00 | (wc & 0x03FF));
+            *to_nxt++ = static_cast<uint8_t>(t >> 8);
+            *to_nxt++ = static_cast<uint8_t>(t);
+        }
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf16be_to_ucs4(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+                uint32_t* to, uint32_t* to_end, uint32_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFE && frm_nxt[1] == 0xFF)
+            frm_nxt += 2;
+    }
+    for (; frm_nxt < frm_end - 1 && to_nxt < to_end; ++to_nxt)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[0] << 8 | frm_nxt[1]);
+        if ((c1 & 0xFC00) == 0xDC00)
+            return codecvt_base::error;
+        if ((c1 & 0xFC00) != 0xD800)
+        {
+            if (c1 > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint32_t>(c1);
+            frm_nxt += 2;
+        }
+        else
+        {
+            if (frm_end-frm_nxt < 4)
+                return codecvt_base::partial;
+            uint16_t c2 = static_cast<uint16_t>(frm_nxt[2] << 8 | frm_nxt[3]);
+            if ((c2 & 0xFC00) != 0xDC00)
+                return codecvt_base::error;
+            uint32_t t = static_cast<uint32_t>(
+                    ((((c1 & 0x03C0) >> 6) + 1) << 16)
+                  |   ((c1 & 0x003F) << 10)
+                  |    (c2 & 0x03FF));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 4;
+        }
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf16be_to_ucs4_length(const uint8_t* frm, const uint8_t* frm_end,
+                       size_t mx, unsigned long Maxcode = 0x10FFFF,
+                       codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFE && frm_nxt[1] == 0xFF)
+            frm_nxt += 2;
+    }
+    for (size_t nchar32_t = 0; frm_nxt < frm_end - 1 && nchar32_t < mx; ++nchar32_t)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[0] << 8 | frm_nxt[1]);
+        if ((c1 & 0xFC00) == 0xDC00)
+            break;
+        if ((c1 & 0xFC00) != 0xD800)
+        {
+            if (c1 > Maxcode)
+                break;
+            frm_nxt += 2;
+        }
+        else
+        {
+            if (frm_end-frm_nxt < 4)
+                break;
+            uint16_t c2 = static_cast<uint16_t>(frm_nxt[2] << 8 | frm_nxt[3]);
+            if ((c2 & 0xFC00) != 0xDC00)
+                break;
+            uint32_t t = static_cast<uint32_t>(
+                    ((((c1 & 0x03C0) >> 6) + 1) << 16)
+                  |   ((c1 & 0x003F) << 10)
+                  |    (c2 & 0x03FF));
+            if (t > Maxcode)
+                break;
+            frm_nxt += 4;
+        }
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+static
+codecvt_base::result
+ucs4_to_utf16le(const uint32_t* frm, const uint32_t* frm_end, const uint32_t*& frm_nxt,
+                uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end - to_nxt < 2)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xFF);
+        *to_nxt++ = static_cast<uint8_t>(0xFE);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint32_t wc = *frm_nxt;
+        if ((wc & 0xFFFFF800) == 0x00D800 || wc > Maxcode)
+            return codecvt_base::error;
+        if (wc < 0x010000)
+        {
+            if (to_end-to_nxt < 2)
+                return codecvt_base::partial;
+            *to_nxt++ = static_cast<uint8_t>(wc);
+            *to_nxt++ = static_cast<uint8_t>(wc >> 8);
+        }
+        else
+        {
+            if (to_end-to_nxt < 4)
+                return codecvt_base::partial;
+            uint16_t t = static_cast<uint16_t>(
+                    0xD800
+                  | ((((wc & 0x1F0000) >> 16) - 1) << 6)
+                  |   ((wc & 0x00FC00) >> 10));
+            *to_nxt++ = static_cast<uint8_t>(t);
+            *to_nxt++ = static_cast<uint8_t>(t >> 8);
+            t = static_cast<uint16_t>(0xDC00 | (wc & 0x03FF));
+            *to_nxt++ = static_cast<uint8_t>(t);
+            *to_nxt++ = static_cast<uint8_t>(t >> 8);
+        }
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf16le_to_ucs4(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+                uint32_t* to, uint32_t* to_end, uint32_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFF && frm_nxt[1] == 0xFE)
+            frm_nxt += 2;
+    }
+    for (; frm_nxt < frm_end - 1 && to_nxt < to_end; ++to_nxt)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[1] << 8 | frm_nxt[0]);
+        if ((c1 & 0xFC00) == 0xDC00)
+            return codecvt_base::error;
+        if ((c1 & 0xFC00) != 0xD800)
+        {
+            if (c1 > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = static_cast<uint32_t>(c1);
+            frm_nxt += 2;
+        }
+        else
+        {
+            if (frm_end-frm_nxt < 4)
+                return codecvt_base::partial;
+            uint16_t c2 = static_cast<uint16_t>(frm_nxt[3] << 8 | frm_nxt[2]);
+            if ((c2 & 0xFC00) != 0xDC00)
+                return codecvt_base::error;
+            uint32_t t = static_cast<uint32_t>(
+                    ((((c1 & 0x03C0) >> 6) + 1) << 16)
+                  |   ((c1 & 0x003F) << 10)
+                  |    (c2 & 0x03FF));
+            if (t > Maxcode)
+                return codecvt_base::error;
+            *to_nxt = t;
+            frm_nxt += 4;
+        }
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf16le_to_ucs4_length(const uint8_t* frm, const uint8_t* frm_end,
+                       size_t mx, unsigned long Maxcode = 0x10FFFF,
+                       codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFF && frm_nxt[1] == 0xFE)
+            frm_nxt += 2;
+    }
+    for (size_t nchar32_t = 0; frm_nxt < frm_end - 1 && nchar32_t < mx; ++nchar32_t)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[1] << 8 | frm_nxt[0]);
+        if ((c1 & 0xFC00) == 0xDC00)
+            break;
+        if ((c1 & 0xFC00) != 0xD800)
+        {
+            if (c1 > Maxcode)
+                break;
+            frm_nxt += 2;
+        }
+        else
+        {
+            if (frm_end-frm_nxt < 4)
+                break;
+            uint16_t c2 = static_cast<uint16_t>(frm_nxt[3] << 8 | frm_nxt[2]);
+            if ((c2 & 0xFC00) != 0xDC00)
+                break;
+            uint32_t t = static_cast<uint32_t>(
+                    ((((c1 & 0x03C0) >> 6) + 1) << 16)
+                  |   ((c1 & 0x003F) << 10)
+                  |    (c2 & 0x03FF));
+            if (t > Maxcode)
+                break;
+            frm_nxt += 4;
+        }
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+static
+codecvt_base::result
+ucs2_to_utf16be(const uint16_t* frm, const uint16_t* frm_end, const uint16_t*& frm_nxt,
+                uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 2)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xFE);
+        *to_nxt++ = static_cast<uint8_t>(0xFF);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint16_t wc = *frm_nxt;
+        if ((wc & 0xF800) == 0xD800 || wc > Maxcode)
+            return codecvt_base::error;
+        if (to_end-to_nxt < 2)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(wc >> 8);
+        *to_nxt++ = static_cast<uint8_t>(wc);
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf16be_to_ucs2(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+                uint16_t* to, uint16_t* to_end, uint16_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFE && frm_nxt[1] == 0xFF)
+            frm_nxt += 2;
+    }
+    for (; frm_nxt < frm_end - 1 && to_nxt < to_end; ++to_nxt)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[0] << 8 | frm_nxt[1]);
+        if ((c1 & 0xF800) == 0xD800 || c1 > Maxcode)
+            return codecvt_base::error;
+        *to_nxt = c1;
+        frm_nxt += 2;
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf16be_to_ucs2_length(const uint8_t* frm, const uint8_t* frm_end,
+                       size_t mx, unsigned long Maxcode = 0x10FFFF,
+                       codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFE && frm_nxt[1] == 0xFF)
+            frm_nxt += 2;
+    }
+    for (size_t nchar16_t = 0; frm_nxt < frm_end - 1 && nchar16_t < mx; ++nchar16_t)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[0] << 8 | frm_nxt[1]);
+        if ((c1 & 0xF800) == 0xD800 || c1 > Maxcode)
+            break;
+        frm_nxt += 2;
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+static
+codecvt_base::result
+ucs2_to_utf16le(const uint16_t* frm, const uint16_t* frm_end, const uint16_t*& frm_nxt,
+                uint8_t* to, uint8_t* to_end, uint8_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & generate_header)
+    {
+        if (to_end-to_nxt < 2)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(0xFF);
+        *to_nxt++ = static_cast<uint8_t>(0xFE);
+    }
+    for (; frm_nxt < frm_end; ++frm_nxt)
+    {
+        uint16_t wc = *frm_nxt;
+        if ((wc & 0xF800) == 0xD800 || wc > Maxcode)
+            return codecvt_base::error;
+        if (to_end-to_nxt < 2)
+            return codecvt_base::partial;
+        *to_nxt++ = static_cast<uint8_t>(wc);
+        *to_nxt++ = static_cast<uint8_t>(wc >> 8);
+    }
+    return codecvt_base::ok;
+}
+
+static
+codecvt_base::result
+utf16le_to_ucs2(const uint8_t* frm, const uint8_t* frm_end, const uint8_t*& frm_nxt,
+                uint16_t* to, uint16_t* to_end, uint16_t*& to_nxt,
+                unsigned long Maxcode = 0x10FFFF, codecvt_mode mode = codecvt_mode(0))
+{
+    frm_nxt = frm;
+    to_nxt = to;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFF && frm_nxt[1] == 0xFE)
+            frm_nxt += 2;
+    }
+    for (; frm_nxt < frm_end - 1 && to_nxt < to_end; ++to_nxt)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[1] << 8 | frm_nxt[0]);
+        if ((c1 & 0xF800) == 0xD800 || c1 > Maxcode)
+            return codecvt_base::error;
+        *to_nxt = c1;
+        frm_nxt += 2;
+    }
+    return frm_nxt < frm_end ? codecvt_base::partial : codecvt_base::ok;
+}
+
+static
+int
+utf16le_to_ucs2_length(const uint8_t* frm, const uint8_t* frm_end,
+                       size_t mx, unsigned long Maxcode = 0x10FFFF,
+                       codecvt_mode mode = codecvt_mode(0))
+{
+    const uint8_t* frm_nxt = frm;
+    frm_nxt = frm;
+    if (mode & consume_header)
+    {
+        if (frm_end-frm_nxt >= 2 && frm_nxt[0] == 0xFF && frm_nxt[1] == 0xFE)
+            frm_nxt += 2;
+    }
+    for (size_t nchar16_t = 0; frm_nxt < frm_end - 1 && nchar16_t < mx; ++nchar16_t)
+    {
+        uint16_t c1 = static_cast<uint16_t>(frm_nxt[1] << 8 | frm_nxt[0]);
+        if ((c1 & 0xF800) == 0xD800 || c1 > Maxcode)
+            break;
+        frm_nxt += 2;
+    }
+    return static_cast<int>(frm_nxt - frm);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+locale::id codecvt<char16_t, char, mbstate_t>::id;
+
+codecvt<char16_t, char, mbstate_t>::~codecvt()
+{
+}
+
+codecvt<char16_t, char, mbstate_t>::result
+codecvt<char16_t, char, mbstate_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = utf16_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char16_t, char, mbstate_t>::result
+codecvt<char16_t, char, mbstate_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf8_to_utf16(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char16_t, char, mbstate_t>::result
+codecvt<char16_t, char, mbstate_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+codecvt<char16_t, char, mbstate_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+codecvt<char16_t, char, mbstate_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+codecvt<char16_t, char, mbstate_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_utf16_length(_frm, _frm_end, mx);
+}
+
+int
+codecvt<char16_t, char, mbstate_t>::do_max_length() const noexcept
+{
+    return 4;
+}
+
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+locale::id codecvt<char16_t, char8_t, mbstate_t>::id;
+
+codecvt<char16_t, char8_t, mbstate_t>::~codecvt()
+{
+}
+
+codecvt<char16_t, char8_t, mbstate_t>::result
+codecvt<char16_t, char8_t, mbstate_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = utf16_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char16_t, char8_t, mbstate_t>::result
+codecvt<char16_t, char8_t, mbstate_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf8_to_utf16(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char16_t, char8_t, mbstate_t>::result
+codecvt<char16_t, char8_t, mbstate_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+codecvt<char16_t, char8_t, mbstate_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+codecvt<char16_t, char8_t, mbstate_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+codecvt<char16_t, char8_t, mbstate_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_utf16_length(_frm, _frm_end, mx);
+}
+
+int
+codecvt<char16_t, char8_t, mbstate_t>::do_max_length() const noexcept
+{
+    return 4;
+}
+
+#endif
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+locale::id codecvt<char32_t, char, mbstate_t>::id;
+
+codecvt<char32_t, char, mbstate_t>::~codecvt()
+{
+}
+
+codecvt<char32_t, char, mbstate_t>::result
+codecvt<char32_t, char, mbstate_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs4_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char32_t, char, mbstate_t>::result
+codecvt<char32_t, char, mbstate_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf8_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char32_t, char, mbstate_t>::result
+codecvt<char32_t, char, mbstate_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+codecvt<char32_t, char, mbstate_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+codecvt<char32_t, char, mbstate_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+codecvt<char32_t, char, mbstate_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_ucs4_length(_frm, _frm_end, mx);
+}
+
+int
+codecvt<char32_t, char, mbstate_t>::do_max_length() const noexcept
+{
+    return 4;
+}
+
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+locale::id codecvt<char32_t, char8_t, mbstate_t>::id;
+
+codecvt<char32_t, char8_t, mbstate_t>::~codecvt()
+{
+}
+
+codecvt<char32_t, char8_t, mbstate_t>::result
+codecvt<char32_t, char8_t, mbstate_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs4_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char32_t, char8_t, mbstate_t>::result
+codecvt<char32_t, char8_t, mbstate_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf8_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+codecvt<char32_t, char8_t, mbstate_t>::result
+codecvt<char32_t, char8_t, mbstate_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+codecvt<char32_t, char8_t, mbstate_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+codecvt<char32_t, char8_t, mbstate_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+codecvt<char32_t, char8_t, mbstate_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_ucs4_length(_frm, _frm_end, mx);
+}
+
+int
+codecvt<char32_t, char8_t, mbstate_t>::do_max_length() const noexcept
+{
+    return 4;
+}
+
+#endif
+
+// __codecvt_utf8<wchar_t>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+__codecvt_utf8<wchar_t>::result
+__codecvt_utf8<wchar_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+#else
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+#endif
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    result r = ucs2_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+#else
+    result r = ucs4_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+#endif
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8<wchar_t>::result
+__codecvt_utf8<wchar_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf8_to_ucs2(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+#else
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf8_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+#endif
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8<wchar_t>::result
+__codecvt_utf8<wchar_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf8<wchar_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf8<wchar_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf8<wchar_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+#if defined(_LIBCPP_SHORT_WCHAR)
+    return utf8_to_ucs2_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+#else
+    return utf8_to_ucs4_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+#endif
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf8<wchar_t>::do_max_length() const noexcept
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    if (__mode_ & consume_header)
+        return 6;
+    return 3;
+#else
+    if (__mode_ & consume_header)
+        return 7;
+    return 4;
+#endif
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// __codecvt_utf8<char16_t>
+
+__codecvt_utf8<char16_t>::result
+__codecvt_utf8<char16_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs2_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8<char16_t>::result
+__codecvt_utf8<char16_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf8_to_ucs2(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8<char16_t>::result
+__codecvt_utf8<char16_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf8<char16_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf8<char16_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf8<char16_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_ucs2_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf8<char16_t>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 6;
+    return 3;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf8<char32_t>
+
+__codecvt_utf8<char32_t>::result
+__codecvt_utf8<char32_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs4_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8<char32_t>::result
+__codecvt_utf8<char32_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf8_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                            __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8<char32_t>::result
+__codecvt_utf8<char32_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf8<char32_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf8<char32_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf8<char32_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_ucs4_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf8<char32_t>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 7;
+    return 4;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf16<wchar_t, false>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+__codecvt_utf16<wchar_t, false>::result
+__codecvt_utf16<wchar_t, false>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+#else
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+#endif
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    result r = ucs2_to_utf16be(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#else
+    result r = ucs4_to_utf16be(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#endif
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<wchar_t, false>::result
+__codecvt_utf16<wchar_t, false>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf16be_to_ucs2(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#else
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf16be_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#endif
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<wchar_t, false>::result
+__codecvt_utf16<wchar_t, false>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf16<wchar_t, false>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf16<wchar_t, false>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf16<wchar_t, false>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+#if defined(_LIBCPP_SHORT_WCHAR)
+    return utf16be_to_ucs2_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+#else
+    return utf16be_to_ucs4_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+#endif
+}
+
+int
+__codecvt_utf16<wchar_t, false>::do_max_length() const noexcept
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    if (__mode_ & consume_header)
+        return 4;
+    return 2;
+#else
+    if (__mode_ & consume_header)
+        return 6;
+    return 4;
+#endif
+}
+
+// __codecvt_utf16<wchar_t, true>
+
+__codecvt_utf16<wchar_t, true>::result
+__codecvt_utf16<wchar_t, true>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+#else
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+#endif
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    result r = ucs2_to_utf16le(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#else
+    result r = ucs4_to_utf16le(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#endif
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<wchar_t, true>::result
+__codecvt_utf16<wchar_t, true>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf16le_to_ucs2(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#else
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf16le_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+#endif
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<wchar_t, true>::result
+__codecvt_utf16<wchar_t, true>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf16<wchar_t, true>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf16<wchar_t, true>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf16<wchar_t, true>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+#if defined(_LIBCPP_SHORT_WCHAR)
+    return utf16le_to_ucs2_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+#else
+    return utf16le_to_ucs4_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+#endif
+}
+
+int
+__codecvt_utf16<wchar_t, true>::do_max_length() const noexcept
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    if (__mode_ & consume_header)
+        return 4;
+    return 2;
+#else
+    if (__mode_ & consume_header)
+        return 6;
+    return 4;
+#endif
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// __codecvt_utf16<char16_t, false>
+
+__codecvt_utf16<char16_t, false>::result
+__codecvt_utf16<char16_t, false>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs2_to_utf16be(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char16_t, false>::result
+__codecvt_utf16<char16_t, false>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf16be_to_ucs2(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char16_t, false>::result
+__codecvt_utf16<char16_t, false>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf16<char16_t, false>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf16<char16_t, false>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf16<char16_t, false>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf16be_to_ucs2_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf16<char16_t, false>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 4;
+    return 2;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf16<char16_t, true>
+
+__codecvt_utf16<char16_t, true>::result
+__codecvt_utf16<char16_t, true>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs2_to_utf16le(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char16_t, true>::result
+__codecvt_utf16<char16_t, true>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf16le_to_ucs2(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char16_t, true>::result
+__codecvt_utf16<char16_t, true>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf16<char16_t, true>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf16<char16_t, true>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf16<char16_t, true>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf16le_to_ucs2_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf16<char16_t, true>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 4;
+    return 2;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf16<char32_t, false>
+
+__codecvt_utf16<char32_t, false>::result
+__codecvt_utf16<char32_t, false>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs4_to_utf16be(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char32_t, false>::result
+__codecvt_utf16<char32_t, false>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf16be_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char32_t, false>::result
+__codecvt_utf16<char32_t, false>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf16<char32_t, false>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf16<char32_t, false>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf16<char32_t, false>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf16be_to_ucs4_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf16<char32_t, false>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 6;
+    return 4;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf16<char32_t, true>
+
+__codecvt_utf16<char32_t, true>::result
+__codecvt_utf16<char32_t, true>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = ucs4_to_utf16le(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char32_t, true>::result
+__codecvt_utf16<char32_t, true>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf16le_to_ucs4(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                               __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf16<char32_t, true>::result
+__codecvt_utf16<char32_t, true>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf16<char32_t, true>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf16<char32_t, true>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf16<char32_t, true>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf16le_to_ucs4_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf16<char32_t, true>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 6;
+    return 4;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf8_utf16<wchar_t>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+__codecvt_utf8_utf16<wchar_t>::result
+__codecvt_utf8_utf16<wchar_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+#if defined(_LIBCPP_SHORT_WCHAR)
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+#else
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+#endif
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = utf16_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                             __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8_utf16<wchar_t>::result
+__codecvt_utf8_utf16<wchar_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+#if defined(_LIBCPP_SHORT_WCHAR)
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+#else
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+#endif
+    result r = utf8_to_utf16(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                             __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8_utf16<wchar_t>::result
+__codecvt_utf8_utf16<wchar_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf8_utf16<wchar_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf8_utf16<wchar_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf8_utf16<wchar_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_utf16_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+int
+__codecvt_utf8_utf16<wchar_t>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 7;
+    return 4;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// __codecvt_utf8_utf16<char16_t>
+
+__codecvt_utf8_utf16<char16_t>::result
+__codecvt_utf8_utf16<char16_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint16_t* _frm = reinterpret_cast<const uint16_t*>(frm);
+    const uint16_t* _frm_end = reinterpret_cast<const uint16_t*>(frm_end);
+    const uint16_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = utf16_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                             __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8_utf16<char16_t>::result
+__codecvt_utf8_utf16<char16_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint16_t* _to = reinterpret_cast<uint16_t*>(to);
+    uint16_t* _to_end = reinterpret_cast<uint16_t*>(to_end);
+    uint16_t* _to_nxt = _to;
+    result r = utf8_to_utf16(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                             __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8_utf16<char16_t>::result
+__codecvt_utf8_utf16<char16_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf8_utf16<char16_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf8_utf16<char16_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf8_utf16<char16_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_utf16_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf8_utf16<char16_t>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 7;
+    return 4;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __codecvt_utf8_utf16<char32_t>
+
+__codecvt_utf8_utf16<char32_t>::result
+__codecvt_utf8_utf16<char32_t>::do_out(state_type&,
+    const intern_type* frm, const intern_type* frm_end, const intern_type*& frm_nxt,
+    extern_type* to, extern_type* to_end, extern_type*& to_nxt) const
+{
+    const uint32_t* _frm = reinterpret_cast<const uint32_t*>(frm);
+    const uint32_t* _frm_end = reinterpret_cast<const uint32_t*>(frm_end);
+    const uint32_t* _frm_nxt = _frm;
+    uint8_t* _to = reinterpret_cast<uint8_t*>(to);
+    uint8_t* _to_end = reinterpret_cast<uint8_t*>(to_end);
+    uint8_t* _to_nxt = _to;
+    result r = utf16_to_utf8(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                             __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8_utf16<char32_t>::result
+__codecvt_utf8_utf16<char32_t>::do_in(state_type&,
+    const extern_type* frm, const extern_type* frm_end, const extern_type*& frm_nxt,
+    intern_type* to, intern_type* to_end, intern_type*& to_nxt) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    const uint8_t* _frm_nxt = _frm;
+    uint32_t* _to = reinterpret_cast<uint32_t*>(to);
+    uint32_t* _to_end = reinterpret_cast<uint32_t*>(to_end);
+    uint32_t* _to_nxt = _to;
+    result r = utf8_to_utf16(_frm, _frm_end, _frm_nxt, _to, _to_end, _to_nxt,
+                             __maxcode_, __mode_);
+    frm_nxt = frm + (_frm_nxt - _frm);
+    to_nxt = to + (_to_nxt - _to);
+    return r;
+}
+
+__codecvt_utf8_utf16<char32_t>::result
+__codecvt_utf8_utf16<char32_t>::do_unshift(state_type&,
+    extern_type* to, extern_type*, extern_type*& to_nxt) const
+{
+    to_nxt = to;
+    return noconv;
+}
+
+int
+__codecvt_utf8_utf16<char32_t>::do_encoding() const noexcept
+{
+    return 0;
+}
+
+bool
+__codecvt_utf8_utf16<char32_t>::do_always_noconv() const noexcept
+{
+    return false;
+}
+
+int
+__codecvt_utf8_utf16<char32_t>::do_length(state_type&,
+    const extern_type* frm, const extern_type* frm_end, size_t mx) const
+{
+    const uint8_t* _frm = reinterpret_cast<const uint8_t*>(frm);
+    const uint8_t* _frm_end = reinterpret_cast<const uint8_t*>(frm_end);
+    return utf8_to_utf16_length(_frm, _frm_end, mx, __maxcode_, __mode_);
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+int
+__codecvt_utf8_utf16<char32_t>::do_max_length() const noexcept
+{
+    if (__mode_ & consume_header)
+        return 7;
+    return 4;
+}
+_LIBCPP_SUPPRESS_DEPRECATED_POP
+
+// __narrow_to_utf8<16>
+
+__narrow_to_utf8<16>::~__narrow_to_utf8()
+{
+}
+
+// __narrow_to_utf8<32>
+
+__narrow_to_utf8<32>::~__narrow_to_utf8()
+{
+}
+
+// __widen_from_utf8<16>
+
+__widen_from_utf8<16>::~__widen_from_utf8()
+{
+}
+
+// __widen_from_utf8<32>
+
+__widen_from_utf8<32>::~__widen_from_utf8()
+{
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+static bool checked_string_to_wchar_convert(wchar_t& dest,
+                                            const char* ptr,
+                                            locale_t loc) {
+  if (*ptr == '\0')
+    return false;
+  mbstate_t mb = {};
+  wchar_t out;
+  size_t ret = __libcpp_mbrtowc_l(&out, ptr, strlen(ptr), &mb, loc);
+  if (ret == static_cast<size_t>(-1) || ret == static_cast<size_t>(-2)) {
+    return false;
+  }
+  dest = out;
+  return true;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+#ifdef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+static bool is_narrow_non_breaking_space(const char* ptr) {
+  // https://www.fileformat.info/info/unicode/char/202f/index.htm
+  return ptr[0] == '\xe2' && ptr[1] == '\x80' && ptr[2] == '\xaf';
+}
+
+static bool is_non_breaking_space(const char* ptr) {
+  // https://www.fileformat.info/info/unicode/char/0a/index.htm
+  return ptr[0] == '\xc2' && ptr[1] == '\xa0';
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+static bool checked_string_to_char_convert(char& dest,
+                                           const char* ptr,
+                                           locale_t __loc) {
+  if (*ptr == '\0')
+    return false;
+  if (!ptr[1]) {
+    dest = *ptr;
+    return true;
+  }
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  // First convert the MBS into a wide char then attempt to narrow it using
+  // wctob_l.
+  wchar_t wout;
+  if (!checked_string_to_wchar_convert(wout, ptr, __loc))
+    return false;
+  int res;
+  if ((res = __libcpp_wctob_l(wout, __loc)) != char_traits<char>::eof()) {
+    dest = res;
+    return true;
+  }
+  // FIXME: Work around specific multibyte sequences that we can reasonably
+  // translate into a different single byte.
+  switch (wout) {
+  case L'\u202F': // narrow non-breaking space
+  case L'\u00A0': // non-breaking space
+    dest = ' ';
+    return true;
+  default:
+    return false;
+  }
+#else // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  // FIXME: Work around specific multibyte sequences that we can reasonably
+  // translate into a different single byte.
+  if (is_narrow_non_breaking_space(ptr) || is_non_breaking_space(ptr)) {
+    dest = ' ';
+    return true;
+  }
+
+  return false;
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  __libcpp_unreachable();
+}
+
+
+// numpunct<char> && numpunct<wchar_t>
+
+locale::id numpunct< char  >::id;
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+locale::id numpunct<wchar_t>::id;
+#endif
+
+numpunct<char>::numpunct(size_t refs)
+    : locale::facet(refs),
+      __decimal_point_('.'),
+      __thousands_sep_(',')
+{
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+numpunct<wchar_t>::numpunct(size_t refs)
+    : locale::facet(refs),
+      __decimal_point_(L'.'),
+      __thousands_sep_(L',')
+{
+}
+#endif
+
+numpunct<char>::~numpunct()
+{
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+numpunct<wchar_t>::~numpunct()
+{
+}
+#endif
+
+ char   numpunct< char  >::do_decimal_point() const {return __decimal_point_;}
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+wchar_t numpunct<wchar_t>::do_decimal_point() const {return __decimal_point_;}
+#endif
+
+ char   numpunct< char  >::do_thousands_sep() const {return __thousands_sep_;}
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+wchar_t numpunct<wchar_t>::do_thousands_sep() const {return __thousands_sep_;}
+#endif
+
+string numpunct< char  >::do_grouping() const {return __grouping_;}
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+string numpunct<wchar_t>::do_grouping() const {return __grouping_;}
+#endif
+
+ string numpunct< char  >::do_truename() const {return "true";}
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+wstring numpunct<wchar_t>::do_truename() const {return L"true";}
+#endif
+
+ string numpunct< char  >::do_falsename() const {return "false";}
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+wstring numpunct<wchar_t>::do_falsename() const {return L"false";}
+#endif
+
+// numpunct_byname<char>
+
+numpunct_byname<char>::numpunct_byname(const char* nm, size_t refs)
+    : numpunct<char>(refs)
+{
+    __init(nm);
+}
+
+numpunct_byname<char>::numpunct_byname(const string& nm, size_t refs)
+    : numpunct<char>(refs)
+{
+    __init(nm.c_str());
+}
+
+numpunct_byname<char>::~numpunct_byname()
+{
+}
+
+void
+numpunct_byname<char>::__init(const char* nm)
+{
+    typedef numpunct<char> base;
+    if (strcmp(nm, "C") != 0)
+    {
+        __libcpp_unique_locale loc(nm);
+        if (!loc)
+            __throw_runtime_error("numpunct_byname<char>::numpunct_byname"
+                                " failed to construct for " + string(nm));
+
+        lconv* lc = __libcpp_localeconv_l(loc.get());
+        if (!checked_string_to_char_convert(__decimal_point_, lc->decimal_point,
+                                            loc.get()))
+            __decimal_point_ = base::do_decimal_point();
+        if (!checked_string_to_char_convert(__thousands_sep_, lc->thousands_sep,
+                                            loc.get()))
+            __thousands_sep_ = base::do_thousands_sep();
+        __grouping_ = lc->grouping;
+        // localization for truename and falsename is not available
+    }
+}
+
+// numpunct_byname<wchar_t>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+numpunct_byname<wchar_t>::numpunct_byname(const char* nm, size_t refs)
+    : numpunct<wchar_t>(refs)
+{
+    __init(nm);
+}
+
+numpunct_byname<wchar_t>::numpunct_byname(const string& nm, size_t refs)
+    : numpunct<wchar_t>(refs)
+{
+    __init(nm.c_str());
+}
+
+numpunct_byname<wchar_t>::~numpunct_byname()
+{
+}
+
+void
+numpunct_byname<wchar_t>::__init(const char* nm)
+{
+    if (strcmp(nm, "C") != 0)
+    {
+        __libcpp_unique_locale loc(nm);
+        if (!loc)
+            __throw_runtime_error("numpunct_byname<wchar_t>::numpunct_byname"
+                                " failed to construct for " + string(nm));
+
+        lconv* lc = __libcpp_localeconv_l(loc.get());
+        checked_string_to_wchar_convert(__decimal_point_, lc->decimal_point,
+                                        loc.get());
+        checked_string_to_wchar_convert(__thousands_sep_, lc->thousands_sep,
+                                        loc.get());
+        __grouping_ = lc->grouping;
+        // localization for truename and falsename is not available
+    }
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// num_get helpers
+
+int
+__num_get_base::__get_base(ios_base& iob)
+{
+    ios_base::fmtflags __basefield = iob.flags() & ios_base::basefield;
+    if (__basefield == ios_base::oct)
+        return 8;
+    else if (__basefield == ios_base::hex)
+        return 16;
+    else if (__basefield == 0)
+        return 0;
+    return 10;
+}
+
+const char __num_get_base::__src[33] = "0123456789abcdefABCDEFxX+-pPiInN";
+
+void
+__check_grouping(const string& __grouping, unsigned* __g, unsigned* __g_end,
+                 ios_base::iostate& __err)
+{
+//  if the grouping pattern is empty _or_ there are no grouping bits, then do nothing
+//  we always have at least a single entry in [__g, __g_end); the end of the input sequence
+    if (__grouping.size() != 0 && __g_end - __g > 1)
+    {
+        reverse(__g, __g_end);
+        const char* __ig = __grouping.data();
+        const char* __eg = __ig + __grouping.size();
+        for (unsigned* __r = __g; __r < __g_end-1; ++__r)
+        {
+            if (0 < *__ig && *__ig < numeric_limits<char>::max())
+            {
+                if (static_cast<unsigned>(*__ig) != *__r)
+                {
+                    __err = ios_base::failbit;
+                    return;
+                }
+            }
+            if (__eg - __ig > 1)
+                ++__ig;
+        }
+        if (0 < *__ig && *__ig < numeric_limits<char>::max())
+        {
+            if (static_cast<unsigned>(*__ig) < __g_end[-1] || __g_end[-1] == 0)
+                __err = ios_base::failbit;
+        }
+    }
+}
+
+void
+__num_put_base::__format_int(char* __fmtp, const char* __len, bool __signd,
+                             ios_base::fmtflags __flags)
+{
+    if ((__flags & ios_base::showpos) &&
+        (__flags & ios_base::basefield) != ios_base::oct &&
+        (__flags & ios_base::basefield) != ios_base::hex &&
+        __signd)
+        *__fmtp++ = '+';
+    if (__flags & ios_base::showbase)
+        *__fmtp++ = '#';
+    while(*__len)
+        *__fmtp++ = *__len++;
+    if ((__flags & ios_base::basefield) == ios_base::oct)
+        *__fmtp = 'o';
+    else if ((__flags & ios_base::basefield) == ios_base::hex)
+    {
+        if (__flags & ios_base::uppercase)
+            *__fmtp = 'X';
+        else
+            *__fmtp = 'x';
+    }
+    else if (__signd)
+        *__fmtp = 'd';
+    else
+        *__fmtp = 'u';
+}
+
+bool
+__num_put_base::__format_float(char* __fmtp, const char* __len,
+                               ios_base::fmtflags __flags)
+{
+    bool specify_precision = true;
+    if (__flags & ios_base::showpos)
+        *__fmtp++ = '+';
+    if (__flags & ios_base::showpoint)
+        *__fmtp++ = '#';
+    ios_base::fmtflags floatfield = __flags & ios_base::floatfield;
+    bool uppercase = (__flags & ios_base::uppercase) != 0;
+    if (floatfield == (ios_base::fixed | ios_base::scientific))
+        specify_precision = false;
+    else
+    {
+        *__fmtp++ = '.';
+        *__fmtp++ = '*';
+    }
+    while(*__len)
+        *__fmtp++ = *__len++;
+    if (floatfield == ios_base::fixed)
+    {
+        if (uppercase)
+            *__fmtp = 'F';
+        else
+            *__fmtp = 'f';
+    }
+    else if (floatfield == ios_base::scientific)
+    {
+        if (uppercase)
+            *__fmtp = 'E';
+        else
+            *__fmtp = 'e';
+    }
+    else if (floatfield == (ios_base::fixed | ios_base::scientific))
+    {
+        if (uppercase)
+            *__fmtp = 'A';
+        else
+            *__fmtp = 'a';
+    }
+    else
+    {
+        if (uppercase)
+            *__fmtp = 'G';
+        else
+            *__fmtp = 'g';
+    }
+    return specify_precision;
+}
+
+char*
+__num_put_base::__identify_padding(char* __nb, char* __ne,
+                                   const ios_base& __iob)
+{
+    switch (__iob.flags() & ios_base::adjustfield)
+    {
+    case ios_base::internal:
+        if (__nb[0] == '-' || __nb[0] == '+')
+            return __nb+1;
+        if (__ne - __nb >= 2 && __nb[0] == '0'
+                            && (__nb[1] == 'x' || __nb[1] == 'X'))
+            return __nb+2;
+        break;
+    case ios_base::left:
+        return __ne;
+    case ios_base::right:
+    default:
+        break;
+    }
+    return __nb;
+}
+
+// time_get
+
+static
+string*
+init_weeks()
+{
+    static string weeks[14];
+    weeks[0]  = "Sunday";
+    weeks[1]  = "Monday";
+    weeks[2]  = "Tuesday";
+    weeks[3]  = "Wednesday";
+    weeks[4]  = "Thursday";
+    weeks[5]  = "Friday";
+    weeks[6]  = "Saturday";
+    weeks[7]  = "Sun";
+    weeks[8]  = "Mon";
+    weeks[9]  = "Tue";
+    weeks[10] = "Wed";
+    weeks[11] = "Thu";
+    weeks[12] = "Fri";
+    weeks[13] = "Sat";
+    return weeks;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+static
+wstring*
+init_wweeks()
+{
+    static wstring weeks[14];
+    weeks[0]  = L"Sunday";
+    weeks[1]  = L"Monday";
+    weeks[2]  = L"Tuesday";
+    weeks[3]  = L"Wednesday";
+    weeks[4]  = L"Thursday";
+    weeks[5]  = L"Friday";
+    weeks[6]  = L"Saturday";
+    weeks[7]  = L"Sun";
+    weeks[8]  = L"Mon";
+    weeks[9]  = L"Tue";
+    weeks[10] = L"Wed";
+    weeks[11] = L"Thu";
+    weeks[12] = L"Fri";
+    weeks[13] = L"Sat";
+    return weeks;
+}
+#endif
+
+template <>
+const string*
+__time_get_c_storage<char>::__weeks() const
+{
+    static const string* weeks = init_weeks();
+    return weeks;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring*
+__time_get_c_storage<wchar_t>::__weeks() const
+{
+    static const wstring* weeks = init_wweeks();
+    return weeks;
+}
+#endif
+
+static
+string*
+init_months()
+{
+    static string months[24];
+    months[0]  = "January";
+    months[1]  = "February";
+    months[2]  = "March";
+    months[3]  = "April";
+    months[4]  = "May";
+    months[5]  = "June";
+    months[6]  = "July";
+    months[7]  = "August";
+    months[8]  = "September";
+    months[9]  = "October";
+    months[10] = "November";
+    months[11] = "December";
+    months[12] = "Jan";
+    months[13] = "Feb";
+    months[14] = "Mar";
+    months[15] = "Apr";
+    months[16] = "May";
+    months[17] = "Jun";
+    months[18] = "Jul";
+    months[19] = "Aug";
+    months[20] = "Sep";
+    months[21] = "Oct";
+    months[22] = "Nov";
+    months[23] = "Dec";
+    return months;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+static
+wstring*
+init_wmonths()
+{
+    static wstring months[24];
+    months[0]  = L"January";
+    months[1]  = L"February";
+    months[2]  = L"March";
+    months[3]  = L"April";
+    months[4]  = L"May";
+    months[5]  = L"June";
+    months[6]  = L"July";
+    months[7]  = L"August";
+    months[8]  = L"September";
+    months[9]  = L"October";
+    months[10] = L"November";
+    months[11] = L"December";
+    months[12] = L"Jan";
+    months[13] = L"Feb";
+    months[14] = L"Mar";
+    months[15] = L"Apr";
+    months[16] = L"May";
+    months[17] = L"Jun";
+    months[18] = L"Jul";
+    months[19] = L"Aug";
+    months[20] = L"Sep";
+    months[21] = L"Oct";
+    months[22] = L"Nov";
+    months[23] = L"Dec";
+    return months;
+}
+#endif
+
+template <>
+const string*
+__time_get_c_storage<char>::__months() const
+{
+    static const string* months = init_months();
+    return months;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring*
+__time_get_c_storage<wchar_t>::__months() const
+{
+    static const wstring* months = init_wmonths();
+    return months;
+}
+#endif
+
+static
+string*
+init_am_pm()
+{
+    static string am_pm[2];
+    am_pm[0]  = "AM";
+    am_pm[1]  = "PM";
+    return am_pm;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+static
+wstring*
+init_wam_pm()
+{
+    static wstring am_pm[2];
+    am_pm[0]  = L"AM";
+    am_pm[1]  = L"PM";
+    return am_pm;
+}
+#endif
+
+template <>
+const string*
+__time_get_c_storage<char>::__am_pm() const
+{
+    static const string* am_pm = init_am_pm();
+    return am_pm;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring*
+__time_get_c_storage<wchar_t>::__am_pm() const
+{
+    static const wstring* am_pm = init_wam_pm();
+    return am_pm;
+}
+#endif
+
+template <>
+const string&
+__time_get_c_storage<char>::__x() const
+{
+    static string s("%m/%d/%y");
+    return s;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring&
+__time_get_c_storage<wchar_t>::__x() const
+{
+    static wstring s(L"%m/%d/%y");
+    return s;
+}
+#endif
+
+template <>
+const string&
+__time_get_c_storage<char>::__X() const
+{
+    static string s("%H:%M:%S");
+    return s;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring&
+__time_get_c_storage<wchar_t>::__X() const
+{
+    static wstring s(L"%H:%M:%S");
+    return s;
+}
+#endif
+
+template <>
+const string&
+__time_get_c_storage<char>::__c() const
+{
+    static string s("%a %b %d %H:%M:%S %Y");
+    return s;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring&
+__time_get_c_storage<wchar_t>::__c() const
+{
+    static wstring s(L"%a %b %d %H:%M:%S %Y");
+    return s;
+}
+#endif
+
+template <>
+const string&
+__time_get_c_storage<char>::__r() const
+{
+    static string s("%I:%M:%S %p");
+    return s;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+const wstring&
+__time_get_c_storage<wchar_t>::__r() const
+{
+    static wstring s(L"%I:%M:%S %p");
+    return s;
+}
+#endif
+
+// time_get_byname
+
+__time_get::__time_get(const char* nm)
+    : __loc_(newlocale(LC_ALL_MASK, nm, 0))
+{
+    if (__loc_ == 0)
+        __throw_runtime_error("time_get_byname"
+                            " failed to construct for " + string(nm));
+}
+
+__time_get::__time_get(const string& nm)
+    : __loc_(newlocale(LC_ALL_MASK, nm.c_str(), 0))
+{
+    if (__loc_ == 0)
+        __throw_runtime_error("time_get_byname"
+                            " failed to construct for " + nm);
+}
+
+__time_get::~__time_get()
+{
+    freelocale(__loc_);
+}
+
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wmissing-field-initializers")
+
+template <>
+string
+__time_get_storage<char>::__analyze(char fmt, const ctype<char>& ct)
+{
+    tm t = {0};
+    t.tm_sec = 59;
+    t.tm_min = 55;
+    t.tm_hour = 23;
+    t.tm_mday = 31;
+    t.tm_mon = 11;
+    t.tm_year = 161;
+    t.tm_wday = 6;
+    t.tm_yday = 364;
+    t.tm_isdst = -1;
+    char buf[100];
+    char f[3] = {0};
+    f[0] = '%';
+    f[1] = fmt;
+    size_t n = strftime_l(buf, countof(buf), f, &t, __loc_);
+    char* bb = buf;
+    char* be = buf + n;
+    string result;
+    while (bb != be)
+    {
+        if (ct.is(ctype_base::space, *bb))
+        {
+            result.push_back(' ');
+            for (++bb; bb != be && ct.is(ctype_base::space, *bb); ++bb)
+                ;
+            continue;
+        }
+        char* w = bb;
+        ios_base::iostate err = ios_base::goodbit;
+        ptrdiff_t i = __scan_keyword(w, be, this->__weeks_, this->__weeks_+14,
+                               ct, err, false)
+                               - this->__weeks_;
+        if (i < 14)
+        {
+            result.push_back('%');
+            if (i < 7)
+                result.push_back('A');
+            else
+                result.push_back('a');
+            bb = w;
+            continue;
+        }
+        w = bb;
+        i = __scan_keyword(w, be, this->__months_, this->__months_+24,
+                           ct, err, false)
+                           - this->__months_;
+        if (i < 24)
+        {
+            result.push_back('%');
+            if (i < 12)
+                result.push_back('B');
+            else
+                result.push_back('b');
+            if (fmt == 'x' && ct.is(ctype_base::digit, this->__months_[i][0]))
+                result.back() = 'm';
+            bb = w;
+            continue;
+        }
+        if (this->__am_pm_[0].size() + this->__am_pm_[1].size() > 0)
+        {
+            w = bb;
+            i = __scan_keyword(w, be, this->__am_pm_, this->__am_pm_+2,
+                               ct, err, false) - this->__am_pm_;
+            if (i < 2)
+            {
+                result.push_back('%');
+                result.push_back('p');
+                bb = w;
+                continue;
+            }
+        }
+        w = bb;
+        if (ct.is(ctype_base::digit, *bb))
+        {
+            switch(__get_up_to_n_digits(bb, be, err, ct, 4))
+            {
+            case 6:
+                result.push_back('%');
+                result.push_back('w');
+                break;
+            case 7:
+                result.push_back('%');
+                result.push_back('u');
+                break;
+            case 11:
+                result.push_back('%');
+                result.push_back('I');
+                break;
+            case 12:
+                result.push_back('%');
+                result.push_back('m');
+                break;
+            case 23:
+                result.push_back('%');
+                result.push_back('H');
+                break;
+            case 31:
+                result.push_back('%');
+                result.push_back('d');
+                break;
+            case 55:
+                result.push_back('%');
+                result.push_back('M');
+                break;
+            case 59:
+                result.push_back('%');
+                result.push_back('S');
+                break;
+            case 61:
+                result.push_back('%');
+                result.push_back('y');
+                break;
+            case 364:
+                result.push_back('%');
+                result.push_back('j');
+                break;
+            case 2061:
+                result.push_back('%');
+                result.push_back('Y');
+                break;
+            default:
+                for (; w != bb; ++w)
+                    result.push_back(*w);
+                break;
+            }
+            continue;
+        }
+        if (*bb == '%')
+        {
+            result.push_back('%');
+            result.push_back('%');
+            ++bb;
+            continue;
+        }
+        result.push_back(*bb);
+        ++bb;
+    }
+    return result;
+}
+
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wmissing-braces")
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+wstring
+__time_get_storage<wchar_t>::__analyze(char fmt, const ctype<wchar_t>& ct)
+{
+    tm t = {0};
+    t.tm_sec = 59;
+    t.tm_min = 55;
+    t.tm_hour = 23;
+    t.tm_mday = 31;
+    t.tm_mon = 11;
+    t.tm_year = 161;
+    t.tm_wday = 6;
+    t.tm_yday = 364;
+    t.tm_isdst = -1;
+    char buf[100];
+    char f[3] = {0};
+    f[0] = '%';
+    f[1] = fmt;
+    strftime_l(buf, countof(buf), f, &t, __loc_);
+    wchar_t wbuf[100];
+    wchar_t* wbb = wbuf;
+    mbstate_t mb = {0};
+    const char* bb = buf;
+    size_t j = __libcpp_mbsrtowcs_l( wbb, &bb, countof(wbuf), &mb, __loc_);
+    if (j == size_t(-1))
+        __throw_runtime_error("locale not supported");
+    wchar_t* wbe = wbb + j;
+    wstring result;
+    while (wbb != wbe)
+    {
+        if (ct.is(ctype_base::space, *wbb))
+        {
+            result.push_back(L' ');
+            for (++wbb; wbb != wbe && ct.is(ctype_base::space, *wbb); ++wbb)
+                ;
+            continue;
+        }
+        wchar_t* w = wbb;
+        ios_base::iostate err = ios_base::goodbit;
+        ptrdiff_t i = __scan_keyword(w, wbe, this->__weeks_, this->__weeks_+14,
+                               ct, err, false)
+                               - this->__weeks_;
+        if (i < 14)
+        {
+            result.push_back(L'%');
+            if (i < 7)
+                result.push_back(L'A');
+            else
+                result.push_back(L'a');
+            wbb = w;
+            continue;
+        }
+        w = wbb;
+        i = __scan_keyword(w, wbe, this->__months_, this->__months_+24,
+                           ct, err, false)
+                           - this->__months_;
+        if (i < 24)
+        {
+            result.push_back(L'%');
+            if (i < 12)
+                result.push_back(L'B');
+            else
+                result.push_back(L'b');
+            if (fmt == 'x' && ct.is(ctype_base::digit, this->__months_[i][0]))
+                result.back() = L'm';
+            wbb = w;
+            continue;
+        }
+        if (this->__am_pm_[0].size() + this->__am_pm_[1].size() > 0)
+        {
+            w = wbb;
+            i = __scan_keyword(w, wbe, this->__am_pm_, this->__am_pm_+2,
+                               ct, err, false) - this->__am_pm_;
+            if (i < 2)
+            {
+                result.push_back(L'%');
+                result.push_back(L'p');
+                wbb = w;
+                continue;
+            }
+        }
+        w = wbb;
+        if (ct.is(ctype_base::digit, *wbb))
+        {
+            switch(__get_up_to_n_digits(wbb, wbe, err, ct, 4))
+            {
+            case 6:
+                result.push_back(L'%');
+                result.push_back(L'w');
+                break;
+            case 7:
+                result.push_back(L'%');
+                result.push_back(L'u');
+                break;
+            case 11:
+                result.push_back(L'%');
+                result.push_back(L'I');
+                break;
+            case 12:
+                result.push_back(L'%');
+                result.push_back(L'm');
+                break;
+            case 23:
+                result.push_back(L'%');
+                result.push_back(L'H');
+                break;
+            case 31:
+                result.push_back(L'%');
+                result.push_back(L'd');
+                break;
+            case 55:
+                result.push_back(L'%');
+                result.push_back(L'M');
+                break;
+            case 59:
+                result.push_back(L'%');
+                result.push_back(L'S');
+                break;
+            case 61:
+                result.push_back(L'%');
+                result.push_back(L'y');
+                break;
+            case 364:
+                result.push_back(L'%');
+                result.push_back(L'j');
+                break;
+            case 2061:
+                result.push_back(L'%');
+                result.push_back(L'Y');
+                break;
+            default:
+                for (; w != wbb; ++w)
+                    result.push_back(*w);
+                break;
+            }
+            continue;
+        }
+        if (ct.narrow(*wbb, 0) == '%')
+        {
+            result.push_back(L'%');
+            result.push_back(L'%');
+            ++wbb;
+            continue;
+        }
+        result.push_back(*wbb);
+        ++wbb;
+    }
+    return result;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+template <>
+void
+__time_get_storage<char>::init(const ctype<char>& ct)
+{
+    tm t = {0};
+    char buf[100];
+    // __weeks_
+    for (int i = 0; i < 7; ++i)
+    {
+        t.tm_wday = i;
+        strftime_l(buf, countof(buf), "%A", &t, __loc_);
+        __weeks_[i] = buf;
+        strftime_l(buf, countof(buf), "%a", &t, __loc_);
+        __weeks_[i+7] = buf;
+    }
+    // __months_
+    for (int i = 0; i < 12; ++i)
+    {
+        t.tm_mon = i;
+        strftime_l(buf, countof(buf), "%B", &t, __loc_);
+        __months_[i] = buf;
+        strftime_l(buf, countof(buf), "%b", &t, __loc_);
+        __months_[i+12] = buf;
+    }
+    // __am_pm_
+    t.tm_hour = 1;
+    strftime_l(buf, countof(buf), "%p", &t, __loc_);
+    __am_pm_[0] = buf;
+    t.tm_hour = 13;
+    strftime_l(buf, countof(buf), "%p", &t, __loc_);
+    __am_pm_[1] = buf;
+    __c_ = __analyze('c', ct);
+    __r_ = __analyze('r', ct);
+    __x_ = __analyze('x', ct);
+    __X_ = __analyze('X', ct);
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+void
+__time_get_storage<wchar_t>::init(const ctype<wchar_t>& ct)
+{
+    tm t = {0};
+    char buf[100];
+    wchar_t wbuf[100];
+    wchar_t* wbe;
+    mbstate_t mb = {0};
+    // __weeks_
+    for (int i = 0; i < 7; ++i)
+    {
+        t.tm_wday = i;
+        strftime_l(buf, countof(buf), "%A", &t, __loc_);
+        mb = mbstate_t();
+        const char* bb = buf;
+        size_t j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, __loc_);
+        if (j == size_t(-1) || j == 0)
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __weeks_[i].assign(wbuf, wbe);
+        strftime_l(buf, countof(buf), "%a", &t, __loc_);
+        mb = mbstate_t();
+        bb = buf;
+        j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, __loc_);
+        if (j == size_t(-1) || j == 0)
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __weeks_[i+7].assign(wbuf, wbe);
+    }
+    // __months_
+    for (int i = 0; i < 12; ++i)
+    {
+        t.tm_mon = i;
+        strftime_l(buf, countof(buf), "%B", &t, __loc_);
+        mb = mbstate_t();
+        const char* bb = buf;
+        size_t j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, __loc_);
+        if (j == size_t(-1) || j == 0)
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __months_[i].assign(wbuf, wbe);
+        strftime_l(buf, countof(buf), "%b", &t, __loc_);
+        mb = mbstate_t();
+        bb = buf;
+        j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, __loc_);
+        if (j == size_t(-1) || j == 0)
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __months_[i+12].assign(wbuf, wbe);
+    }
+    // __am_pm_
+    t.tm_hour = 1;
+    strftime_l(buf, countof(buf), "%p", &t, __loc_);
+    mb = mbstate_t();
+    const char* bb = buf;
+    size_t j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, __loc_);
+    if (j == size_t(-1))
+        __throw_runtime_error("locale not supported");
+    wbe = wbuf + j;
+    __am_pm_[0].assign(wbuf, wbe);
+    t.tm_hour = 13;
+    strftime_l(buf, countof(buf), "%p", &t, __loc_);
+    mb = mbstate_t();
+    bb = buf;
+    j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, __loc_);
+    if (j == size_t(-1))
+        __throw_runtime_error("locale not supported");
+    wbe = wbuf + j;
+    __am_pm_[1].assign(wbuf, wbe);
+    __c_ = __analyze('c', ct);
+    __r_ = __analyze('r', ct);
+    __x_ = __analyze('x', ct);
+    __X_ = __analyze('X', ct);
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+template <class CharT>
+struct _LIBCPP_HIDDEN __time_get_temp
+    : public ctype_byname<CharT>
+{
+    explicit __time_get_temp(const char* nm)
+        : ctype_byname<CharT>(nm, 1) {}
+    explicit __time_get_temp(const string& nm)
+        : ctype_byname<CharT>(nm, 1) {}
+};
+
+template <>
+__time_get_storage<char>::__time_get_storage(const char* __nm)
+    : __time_get(__nm)
+{
+    const __time_get_temp<char> ct(__nm);
+    init(ct);
+}
+
+template <>
+__time_get_storage<char>::__time_get_storage(const string& __nm)
+    : __time_get(__nm)
+{
+    const __time_get_temp<char> ct(__nm);
+    init(ct);
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+__time_get_storage<wchar_t>::__time_get_storage(const char* __nm)
+    : __time_get(__nm)
+{
+    const __time_get_temp<wchar_t> ct(__nm);
+    init(ct);
+}
+
+template <>
+__time_get_storage<wchar_t>::__time_get_storage(const string& __nm)
+    : __time_get(__nm)
+{
+    const __time_get_temp<wchar_t> ct(__nm);
+    init(ct);
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+template <>
+time_base::dateorder
+__time_get_storage<char>::__do_date_order() const
+{
+    unsigned i;
+    for (i = 0; i < __x_.size(); ++i)
+        if (__x_[i] == '%')
+            break;
+    ++i;
+    switch (__x_[i])
+    {
+    case 'y':
+    case 'Y':
+        for (++i; i < __x_.size(); ++i)
+            if (__x_[i] == '%')
+                break;
+        if (i == __x_.size())
+            break;
+        ++i;
+        switch (__x_[i])
+        {
+        case 'm':
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == '%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == 'd')
+                return time_base::ymd;
+            break;
+        case 'd':
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == '%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == 'm')
+                return time_base::ydm;
+            break;
+        }
+        break;
+    case 'm':
+        for (++i; i < __x_.size(); ++i)
+            if (__x_[i] == '%')
+                break;
+        if (i == __x_.size())
+            break;
+        ++i;
+        if (__x_[i] == 'd')
+        {
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == '%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == 'y' || __x_[i] == 'Y')
+                return time_base::mdy;
+            break;
+        }
+        break;
+    case 'd':
+        for (++i; i < __x_.size(); ++i)
+            if (__x_[i] == '%')
+                break;
+        if (i == __x_.size())
+            break;
+        ++i;
+        if (__x_[i] == 'm')
+        {
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == '%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == 'y' || __x_[i] == 'Y')
+                return time_base::dmy;
+            break;
+        }
+        break;
+    }
+    return time_base::no_order;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+time_base::dateorder
+__time_get_storage<wchar_t>::__do_date_order() const
+{
+    unsigned i;
+    for (i = 0; i < __x_.size(); ++i)
+        if (__x_[i] == L'%')
+            break;
+    ++i;
+    switch (__x_[i])
+    {
+    case L'y':
+    case L'Y':
+        for (++i; i < __x_.size(); ++i)
+            if (__x_[i] == L'%')
+                break;
+        if (i == __x_.size())
+            break;
+        ++i;
+        switch (__x_[i])
+        {
+        case L'm':
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == L'%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == L'd')
+                return time_base::ymd;
+            break;
+        case L'd':
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == L'%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == L'm')
+                return time_base::ydm;
+            break;
+        }
+        break;
+    case L'm':
+        for (++i; i < __x_.size(); ++i)
+            if (__x_[i] == L'%')
+                break;
+        if (i == __x_.size())
+            break;
+        ++i;
+        if (__x_[i] == L'd')
+        {
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == L'%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == L'y' || __x_[i] == L'Y')
+                return time_base::mdy;
+            break;
+        }
+        break;
+    case L'd':
+        for (++i; i < __x_.size(); ++i)
+            if (__x_[i] == L'%')
+                break;
+        if (i == __x_.size())
+            break;
+        ++i;
+        if (__x_[i] == L'm')
+        {
+            for (++i; i < __x_.size(); ++i)
+                if (__x_[i] == L'%')
+                    break;
+            if (i == __x_.size())
+                break;
+            ++i;
+            if (__x_[i] == L'y' || __x_[i] == L'Y')
+                return time_base::dmy;
+            break;
+        }
+        break;
+    }
+    return time_base::no_order;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// time_put
+
+__time_put::__time_put(const char* nm)
+    : __loc_(newlocale(LC_ALL_MASK, nm, 0))
+{
+    if (__loc_ == 0)
+        __throw_runtime_error("time_put_byname"
+                            " failed to construct for " + string(nm));
+}
+
+__time_put::__time_put(const string& nm)
+    : __loc_(newlocale(LC_ALL_MASK, nm.c_str(), 0))
+{
+    if (__loc_ == 0)
+        __throw_runtime_error("time_put_byname"
+                            " failed to construct for " + nm);
+}
+
+__time_put::~__time_put()
+{
+    if (__loc_ != _LIBCPP_GET_C_LOCALE)
+        freelocale(__loc_);
+}
+
+void
+__time_put::__do_put(char* __nb, char*& __ne, const tm* __tm,
+                     char __fmt, char __mod) const
+{
+    char fmt[] = {'%', __fmt, __mod, 0};
+    if (__mod != 0)
+        swap(fmt[1], fmt[2]);
+    size_t n = strftime_l(__nb, countof(__nb, __ne), fmt, __tm, __loc_);
+    __ne = __nb + n;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+void
+__time_put::__do_put(wchar_t* __wb, wchar_t*& __we, const tm* __tm,
+                     char __fmt, char __mod) const
+{
+    char __nar[100];
+    char* __ne = __nar + 100;
+    __do_put(__nar, __ne, __tm, __fmt, __mod);
+    mbstate_t mb = {0};
+    const char* __nb = __nar;
+    size_t j = __libcpp_mbsrtowcs_l(__wb, &__nb, countof(__wb, __we), &mb, __loc_);
+    if (j == size_t(-1))
+        __throw_runtime_error("locale not supported");
+    __we = __wb + j;
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// moneypunct_byname
+
+template <class charT>
+static
+void
+__init_pat(money_base::pattern& pat, basic_string<charT>& __curr_symbol_,
+           bool intl, char cs_precedes, char sep_by_space, char sign_posn,
+           charT space_char)
+{
+    const char sign = static_cast<char>(money_base::sign);
+    const char space = static_cast<char>(money_base::space);
+    const char none = static_cast<char>(money_base::none);
+    const char symbol = static_cast<char>(money_base::symbol);
+    const char value = static_cast<char>(money_base::value);
+    const bool symbol_contains_sep = intl && __curr_symbol_.size() == 4;
+
+    // Comments on case branches reflect 'C11 7.11.2.1 The localeconv
+    // function'. "Space between sign and symbol or value" means that
+    // if the sign is adjacent to the symbol, there's a space between
+    // them, and otherwise there's a space between the sign and value.
+    //
+    // C11's localeconv specifies that the fourth character of an
+    // international curr_symbol is used to separate the sign and
+    // value when sep_by_space says to do so. C++ can't represent
+    // that, so we just use a space.  When sep_by_space says to
+    // separate the symbol and value-or-sign with a space, we rearrange the
+    // curr_symbol to put its spacing character on the correct side of
+    // the symbol.
+    //
+    // We also need to avoid adding an extra space between the sign
+    // and value when the currency symbol is suppressed (by not
+    // setting showbase).  We match glibc's strfmon by interpreting
+    // sep_by_space==1 as "omit the space when the currency symbol is
+    // absent".
+    //
+    // Users who want to get this right should use ICU instead.
+
+    switch (cs_precedes)
+    {
+    case 0:  // value before curr_symbol
+        if (symbol_contains_sep) {
+            // Move the separator to before the symbol, to place it
+            // between the value and symbol.
+            rotate(__curr_symbol_.begin(), __curr_symbol_.begin() + 3,
+                   __curr_symbol_.end());
+        }
+        switch (sign_posn)
+        {
+        case 0:  // Parentheses surround the quantity and currency symbol.
+            pat.field[0] = sign;
+            pat.field[1] = value;
+            pat.field[2] = none;  // Any space appears in the symbol.
+            pat.field[3] = symbol;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                // This case may have changed between C99 and C11;
+                // assume the currency symbol matches the intention.
+            case 2:  // Space between sign and currency or value.
+                // The "sign" is two parentheses, so no space here either.
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[2]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.insert(0, 1, space_char);
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 1:  // The sign string precedes the quantity and currency symbol.
+            pat.field[0] = sign;
+            pat.field[3] = symbol;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = value;
+                pat.field[2] = none;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = value;
+                pat.field[2] = none;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[2]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.insert(0, 1, space_char);
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = space;
+                pat.field[2] = value;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // has already appeared after the sign.
+                    __curr_symbol_.erase(__curr_symbol_.begin());
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 2:  // The sign string succeeds the quantity and currency symbol.
+            pat.field[0] = value;
+            pat.field[3] = sign;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = none;
+                pat.field[2] = symbol;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[1]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.insert(0, 1, space_char);
+                }
+                pat.field[1] = none;
+                pat.field[2] = symbol;
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = symbol;
+                pat.field[2] = space;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // should not be removed if showbase is absent.
+                    __curr_symbol_.erase(__curr_symbol_.begin());
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 3:  // The sign string immediately precedes the currency symbol.
+            pat.field[0] = value;
+            pat.field[3] = symbol;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = none;
+                pat.field[2] = sign;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = space;
+                pat.field[2] = sign;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // has already appeared before the sign.
+                    __curr_symbol_.erase(__curr_symbol_.begin());
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = sign;
+                pat.field[2] = none;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[2]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.insert(0, 1, space_char);
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 4:  // The sign string immediately succeeds the currency symbol.
+            pat.field[0] = value;
+            pat.field[3] = sign;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = none;
+                pat.field[2] = symbol;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = none;
+                pat.field[2] = symbol;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[1]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.insert(0, 1, space_char);
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = symbol;
+                pat.field[2] = space;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // should not disappear when showbase is absent.
+                    __curr_symbol_.erase(__curr_symbol_.begin());
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        default:
+            break;
+        }
+        break;
+    case 1:  // curr_symbol before value
+        switch (sign_posn)
+        {
+        case 0:  // Parentheses surround the quantity and currency symbol.
+            pat.field[0] = sign;
+            pat.field[1] = symbol;
+            pat.field[2] = none;  // Any space appears in the symbol.
+            pat.field[3] = value;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                // This case may have changed between C99 and C11;
+                // assume the currency symbol matches the intention.
+            case 2:  // Space between sign and currency or value.
+                // The "sign" is two parentheses, so no space here either.
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[2]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.insert(0, 1, space_char);
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 1:  // The sign string precedes the quantity and currency symbol.
+            pat.field[0] = sign;
+            pat.field[3] = value;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = symbol;
+                pat.field[2] = none;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = symbol;
+                pat.field[2] = none;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[2]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.push_back(space_char);
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = space;
+                pat.field[2] = symbol;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // has already appeared after the sign.
+                    __curr_symbol_.pop_back();
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 2:  // The sign string succeeds the quantity and currency symbol.
+            pat.field[0] = symbol;
+            pat.field[3] = sign;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = none;
+                pat.field[2] = value;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = none;
+                pat.field[2] = value;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[1]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.push_back(space_char);
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = value;
+                pat.field[2] = space;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // will appear before the sign.
+                    __curr_symbol_.pop_back();
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 3:  // The sign string immediately precedes the currency symbol.
+            pat.field[0] = sign;
+            pat.field[3] = value;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = symbol;
+                pat.field[2] = none;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = symbol;
+                pat.field[2] = none;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[2]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.push_back(space_char);
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = space;
+                pat.field[2] = symbol;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // has already appeared after the sign.
+                    __curr_symbol_.pop_back();
+                }
+                return;
+            default:
+                break;
+            }
+            break;
+        case 4:  // The sign string immediately succeeds the currency symbol.
+            pat.field[0] = symbol;
+            pat.field[3] = value;
+            switch (sep_by_space)
+            {
+            case 0:  // No space separates the currency symbol and value.
+                pat.field[1] = sign;
+                pat.field[2] = none;
+                return;
+            case 1:  // Space between currency-and-sign or currency and value.
+                pat.field[1] = sign;
+                pat.field[2] = space;
+                if (symbol_contains_sep) {
+                    // Remove the separator from the symbol, since it
+                    // should not disappear when showbase is absent.
+                    __curr_symbol_.pop_back();
+                }
+                return;
+            case 2:  // Space between sign and currency or value.
+                pat.field[1] = none;
+                pat.field[2] = sign;
+                if (!symbol_contains_sep) {
+                    // We insert the space into the symbol instead of
+                    // setting pat.field[1]=space so that when
+                    // showbase is not set, the space goes away too.
+                    __curr_symbol_.push_back(space_char);
+                }
+                return;
+           default:
+                break;
+            }
+            break;
+        default:
+            break;
+        }
+        break;
+    default:
+        break;
+    }
+    pat.field[0] = symbol;
+    pat.field[1] = sign;
+    pat.field[2] = none;
+    pat.field[3] = value;
+}
+
+template<>
+void
+moneypunct_byname<char, false>::init(const char* nm)
+{
+    typedef moneypunct<char, false> base;
+    __libcpp_unique_locale loc(nm);
+    if (!loc)
+        __throw_runtime_error("moneypunct_byname"
+                            " failed to construct for " + string(nm));
+
+    lconv* lc = __libcpp_localeconv_l(loc.get());
+    if (!checked_string_to_char_convert(__decimal_point_,
+                                        lc->mon_decimal_point,
+                                        loc.get()))
+      __decimal_point_ = base::do_decimal_point();
+    if (!checked_string_to_char_convert(__thousands_sep_,
+                                        lc->mon_thousands_sep,
+                                        loc.get()))
+      __thousands_sep_ = base::do_thousands_sep();
+
+    __grouping_ = lc->mon_grouping;
+    __curr_symbol_ = lc->currency_symbol;
+    if (lc->frac_digits != CHAR_MAX)
+        __frac_digits_ = lc->frac_digits;
+    else
+        __frac_digits_ = base::do_frac_digits();
+    if (lc->p_sign_posn == 0)
+        __positive_sign_ = "()";
+    else
+        __positive_sign_ = lc->positive_sign;
+    if (lc->n_sign_posn == 0)
+        __negative_sign_ = "()";
+    else
+        __negative_sign_ = lc->negative_sign;
+    // Assume the positive and negative formats will want spaces in
+    // the same places in curr_symbol since there's no way to
+    // represent anything else.
+    string_type __dummy_curr_symbol = __curr_symbol_;
+    __init_pat(__pos_format_, __dummy_curr_symbol, false,
+               lc->p_cs_precedes, lc->p_sep_by_space, lc->p_sign_posn, ' ');
+    __init_pat(__neg_format_, __curr_symbol_, false,
+               lc->n_cs_precedes, lc->n_sep_by_space, lc->n_sign_posn, ' ');
+}
+
+template<>
+void
+moneypunct_byname<char, true>::init(const char* nm)
+{
+    typedef moneypunct<char, true> base;
+    __libcpp_unique_locale loc(nm);
+    if (!loc)
+        __throw_runtime_error("moneypunct_byname"
+                            " failed to construct for " + string(nm));
+
+    lconv* lc = __libcpp_localeconv_l(loc.get());
+    if (!checked_string_to_char_convert(__decimal_point_,
+                                        lc->mon_decimal_point,
+                                        loc.get()))
+      __decimal_point_ = base::do_decimal_point();
+    if (!checked_string_to_char_convert(__thousands_sep_,
+                                        lc->mon_thousands_sep,
+                                        loc.get()))
+      __thousands_sep_ = base::do_thousands_sep();
+    __grouping_ = lc->mon_grouping;
+    __curr_symbol_ = lc->int_curr_symbol;
+    if (lc->int_frac_digits != CHAR_MAX)
+        __frac_digits_ = lc->int_frac_digits;
+    else
+        __frac_digits_ = base::do_frac_digits();
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    if (lc->p_sign_posn == 0)
+#else // _LIBCPP_MSVCRT
+    if (lc->int_p_sign_posn == 0)
+#endif // !_LIBCPP_MSVCRT
+        __positive_sign_ = "()";
+    else
+        __positive_sign_ = lc->positive_sign;
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    if(lc->n_sign_posn == 0)
+#else // _LIBCPP_MSVCRT
+    if (lc->int_n_sign_posn == 0)
+#endif // !_LIBCPP_MSVCRT
+        __negative_sign_ = "()";
+    else
+        __negative_sign_ = lc->negative_sign;
+    // Assume the positive and negative formats will want spaces in
+    // the same places in curr_symbol since there's no way to
+    // represent anything else.
+    string_type __dummy_curr_symbol = __curr_symbol_;
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    __init_pat(__pos_format_, __dummy_curr_symbol, true,
+               lc->p_cs_precedes, lc->p_sep_by_space, lc->p_sign_posn, ' ');
+    __init_pat(__neg_format_, __curr_symbol_, true,
+               lc->n_cs_precedes, lc->n_sep_by_space, lc->n_sign_posn, ' ');
+#else // _LIBCPP_MSVCRT
+    __init_pat(__pos_format_, __dummy_curr_symbol, true,
+               lc->int_p_cs_precedes, lc->int_p_sep_by_space,
+               lc->int_p_sign_posn, ' ');
+    __init_pat(__neg_format_, __curr_symbol_, true,
+               lc->int_n_cs_precedes, lc->int_n_sep_by_space,
+               lc->int_n_sign_posn, ' ');
+#endif // !_LIBCPP_MSVCRT
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template<>
+void
+moneypunct_byname<wchar_t, false>::init(const char* nm)
+{
+    typedef moneypunct<wchar_t, false> base;
+    __libcpp_unique_locale loc(nm);
+    if (!loc)
+        __throw_runtime_error("moneypunct_byname"
+                            " failed to construct for " + string(nm));
+    lconv* lc = __libcpp_localeconv_l(loc.get());
+    if (!checked_string_to_wchar_convert(__decimal_point_,
+                                         lc->mon_decimal_point,
+                                         loc.get()))
+      __decimal_point_ = base::do_decimal_point();
+    if (!checked_string_to_wchar_convert(__thousands_sep_,
+                                         lc->mon_thousands_sep,
+                                         loc.get()))
+      __thousands_sep_ = base::do_thousands_sep();
+    __grouping_ = lc->mon_grouping;
+    wchar_t wbuf[100];
+    mbstate_t mb = {0};
+    const char* bb = lc->currency_symbol;
+    size_t j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, loc.get());
+    if (j == size_t(-1))
+        __throw_runtime_error("locale not supported");
+    wchar_t* wbe = wbuf + j;
+    __curr_symbol_.assign(wbuf, wbe);
+    if (lc->frac_digits != CHAR_MAX)
+        __frac_digits_ = lc->frac_digits;
+    else
+        __frac_digits_ = base::do_frac_digits();
+    if (lc->p_sign_posn == 0)
+        __positive_sign_ = L"()";
+    else
+    {
+        mb = mbstate_t();
+        bb = lc->positive_sign;
+        j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, loc.get());
+        if (j == size_t(-1))
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __positive_sign_.assign(wbuf, wbe);
+    }
+    if (lc->n_sign_posn == 0)
+        __negative_sign_ = L"()";
+    else
+    {
+        mb = mbstate_t();
+        bb = lc->negative_sign;
+        j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, loc.get());
+        if (j == size_t(-1))
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __negative_sign_.assign(wbuf, wbe);
+    }
+    // Assume the positive and negative formats will want spaces in
+    // the same places in curr_symbol since there's no way to
+    // represent anything else.
+    string_type __dummy_curr_symbol = __curr_symbol_;
+    __init_pat(__pos_format_, __dummy_curr_symbol, false,
+               lc->p_cs_precedes, lc->p_sep_by_space, lc->p_sign_posn, L' ');
+    __init_pat(__neg_format_, __curr_symbol_, false,
+               lc->n_cs_precedes, lc->n_sep_by_space, lc->n_sign_posn, L' ');
+}
+
+template<>
+void
+moneypunct_byname<wchar_t, true>::init(const char* nm)
+{
+    typedef moneypunct<wchar_t, true> base;
+    __libcpp_unique_locale loc(nm);
+    if (!loc)
+        __throw_runtime_error("moneypunct_byname"
+                            " failed to construct for " + string(nm));
+
+    lconv* lc = __libcpp_localeconv_l(loc.get());
+    if (!checked_string_to_wchar_convert(__decimal_point_,
+                                         lc->mon_decimal_point,
+                                         loc.get()))
+      __decimal_point_ = base::do_decimal_point();
+    if (!checked_string_to_wchar_convert(__thousands_sep_,
+                                         lc->mon_thousands_sep,
+                                         loc.get()))
+      __thousands_sep_ = base::do_thousands_sep();
+    __grouping_ = lc->mon_grouping;
+    wchar_t wbuf[100];
+    mbstate_t mb = {0};
+    const char* bb = lc->int_curr_symbol;
+    size_t j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, loc.get());
+    if (j == size_t(-1))
+        __throw_runtime_error("locale not supported");
+    wchar_t* wbe = wbuf + j;
+    __curr_symbol_.assign(wbuf, wbe);
+    if (lc->int_frac_digits != CHAR_MAX)
+        __frac_digits_ = lc->int_frac_digits;
+    else
+        __frac_digits_ = base::do_frac_digits();
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    if (lc->p_sign_posn == 0)
+#else // _LIBCPP_MSVCRT
+    if (lc->int_p_sign_posn == 0)
+#endif // !_LIBCPP_MSVCRT
+        __positive_sign_ = L"()";
+    else
+    {
+        mb = mbstate_t();
+        bb = lc->positive_sign;
+        j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, loc.get());
+        if (j == size_t(-1))
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __positive_sign_.assign(wbuf, wbe);
+    }
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    if (lc->n_sign_posn == 0)
+#else // _LIBCPP_MSVCRT
+    if (lc->int_n_sign_posn == 0)
+#endif // !_LIBCPP_MSVCRT
+        __negative_sign_ = L"()";
+    else
+    {
+        mb = mbstate_t();
+        bb = lc->negative_sign;
+        j = __libcpp_mbsrtowcs_l(wbuf, &bb, countof(wbuf), &mb, loc.get());
+        if (j == size_t(-1))
+            __throw_runtime_error("locale not supported");
+        wbe = wbuf + j;
+        __negative_sign_.assign(wbuf, wbe);
+    }
+    // Assume the positive and negative formats will want spaces in
+    // the same places in curr_symbol since there's no way to
+    // represent anything else.
+    string_type __dummy_curr_symbol = __curr_symbol_;
+#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
+    __init_pat(__pos_format_, __dummy_curr_symbol, true,
+               lc->p_cs_precedes, lc->p_sep_by_space, lc->p_sign_posn, L' ');
+    __init_pat(__neg_format_, __curr_symbol_, true,
+               lc->n_cs_precedes, lc->n_sep_by_space, lc->n_sign_posn, L' ');
+#else // _LIBCPP_MSVCRT
+    __init_pat(__pos_format_, __dummy_curr_symbol, true,
+               lc->int_p_cs_precedes, lc->int_p_sep_by_space,
+               lc->int_p_sign_posn, L' ');
+    __init_pat(__neg_format_, __curr_symbol_, true,
+               lc->int_n_cs_precedes, lc->int_n_sep_by_space,
+               lc->int_n_sign_posn, L' ');
+#endif // !_LIBCPP_MSVCRT
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+void __do_nothing(void*) {}
+
+void __throw_runtime_error(const char* msg)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    throw runtime_error(msg);
+#else
+    (void)msg;
+    _VSTD::abort();
+#endif
+}
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS collate<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS collate<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS num_get<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS num_get<wchar_t>;)
+
+                           template struct _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __num_get<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template struct _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __num_get<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS num_put<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS num_put<wchar_t>;)
+
+                           template struct _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __num_put<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template struct _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __num_put<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_get<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_get<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_get_byname<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_get_byname<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_put<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_put<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_put_byname<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS time_put_byname<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct<char, false>;
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct<char, true>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct<wchar_t, false>;)
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct<wchar_t, true>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct_byname<char, false>;
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct_byname<char, true>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct_byname<wchar_t, false>;)
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS moneypunct_byname<wchar_t, true>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS money_get<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS money_get<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __money_get<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __money_get<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS money_put<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS money_put<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __money_put<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS __money_put<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS messages<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS messages<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS messages_byname<char>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS messages_byname<wchar_t>;)
+
+                           template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS codecvt_byname<char, char, mbstate_t>;
+_LIBCPP_IF_WIDE_CHARACTERS(template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS codecvt_byname<wchar_t, char, mbstate_t>;)
+template class _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS codecvt_byname<char16_t, char, mbstate_t>;
+template class _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS codecvt_byname<char32_t, char, mbstate_t>;
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS codecvt_byname<char16_t, char8_t, mbstate_t>;
+template class _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS codecvt_byname<char32_t, char8_t, mbstate_t>;
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
diff --git a/app/src/main/cpp/libcxx/src/memory.cpp b/app/src/main/cpp/libcxx/src/memory.cpp
new file mode 100644
index 0000000..3fd5439
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/memory.cpp
@@ -0,0 +1,209 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#ifdef _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS
+#   define _LIBCPP_SHARED_PTR_DEFINE_LEGACY_INLINE_FUNCTIONS
+#endif
+
+#include <memory>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+#  include <mutex>
+#  include <thread>
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+#include "include/atomic_support.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+const allocator_arg_t allocator_arg = allocator_arg_t();
+
+bad_weak_ptr::~bad_weak_ptr() noexcept {}
+
+const char*
+bad_weak_ptr::what() const noexcept
+{
+    return "bad_weak_ptr";
+}
+
+__shared_count::~__shared_count()
+{
+}
+
+__shared_weak_count::~__shared_weak_count()
+{
+}
+
+#if defined(_LIBCPP_SHARED_PTR_DEFINE_LEGACY_INLINE_FUNCTIONS)
+void
+__shared_count::__add_shared() noexcept
+{
+    __libcpp_atomic_refcount_increment(__shared_owners_);
+}
+
+bool
+__shared_count::__release_shared() noexcept
+{
+    if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1)
+    {
+        __on_zero_shared();
+        return true;
+    }
+    return false;
+}
+
+void
+__shared_weak_count::__add_shared() noexcept
+{
+    __shared_count::__add_shared();
+}
+
+void
+__shared_weak_count::__add_weak() noexcept
+{
+    __libcpp_atomic_refcount_increment(__shared_weak_owners_);
+}
+
+void
+__shared_weak_count::__release_shared() noexcept
+{
+    if (__shared_count::__release_shared())
+        __release_weak();
+}
+#endif // _LIBCPP_SHARED_PTR_DEFINE_LEGACY_INLINE_FUNCTIONS
+
+void
+__shared_weak_count::__release_weak() noexcept
+{
+    // NOTE: The acquire load here is an optimization of the very
+    // common case where a shared pointer is being destructed while
+    // having no other contended references.
+    //
+    // BENEFIT: We avoid expensive atomic stores like XADD and STREX
+    // in a common case.  Those instructions are slow and do nasty
+    // things to caches.
+    //
+    // IS THIS SAFE?  Yes.  During weak destruction, if we see that we
+    // are the last reference, we know that no-one else is accessing
+    // us. If someone were accessing us, then they would be doing so
+    // while the last shared / weak_ptr was being destructed, and
+    // that's undefined anyway.
+    //
+    // If we see anything other than a 0, then we have possible
+    // contention, and need to use an atomicrmw primitive.
+    // The same arguments don't apply for increment, where it is legal
+    // (though inadvisable) to share shared_ptr references between
+    // threads, and have them all get copied at once.  The argument
+    // also doesn't apply for __release_shared, because an outstanding
+    // weak_ptr::lock() could read / modify the shared count.
+    if (__libcpp_atomic_load(&__shared_weak_owners_, _AO_Acquire) == 0)
+    {
+        // no need to do this store, because we are about
+        // to destroy everything.
+        //__libcpp_atomic_store(&__shared_weak_owners_, -1, _AO_Release);
+        __on_zero_shared_weak();
+    }
+    else if (__libcpp_atomic_refcount_decrement(__shared_weak_owners_) == -1)
+        __on_zero_shared_weak();
+}
+
+__shared_weak_count*
+__shared_weak_count::lock() noexcept
+{
+    long object_owners = __libcpp_atomic_load(&__shared_owners_);
+    while (object_owners != -1)
+    {
+        if (__libcpp_atomic_compare_exchange(&__shared_owners_,
+                                             &object_owners,
+                                             object_owners+1))
+            return this;
+    }
+    return nullptr;
+}
+
+const void*
+__shared_weak_count::__get_deleter(const type_info&) const noexcept
+{
+    return nullptr;
+}
+
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+
+static constexpr std::size_t __sp_mut_count = 32;
+static constinit __libcpp_mutex_t mut_back[__sp_mut_count] =
+{
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER,
+    _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER, _LIBCPP_MUTEX_INITIALIZER
+};
+
+_LIBCPP_CONSTEXPR __sp_mut::__sp_mut(void* p) noexcept
+   : __lx_(p)
+{
+}
+
+void
+__sp_mut::lock() noexcept
+{
+    auto m = static_cast<__libcpp_mutex_t*>(__lx_);
+    __libcpp_mutex_lock(m);
+}
+
+void
+__sp_mut::unlock() noexcept
+{
+    __libcpp_mutex_unlock(static_cast<__libcpp_mutex_t*>(__lx_));
+}
+
+__sp_mut&
+__get_sp_mut(const void* p)
+{
+    static constinit __sp_mut muts[__sp_mut_count] = {
+        &mut_back[ 0], &mut_back[ 1], &mut_back[ 2], &mut_back[ 3],
+        &mut_back[ 4], &mut_back[ 5], &mut_back[ 6], &mut_back[ 7],
+        &mut_back[ 8], &mut_back[ 9], &mut_back[10], &mut_back[11],
+        &mut_back[12], &mut_back[13], &mut_back[14], &mut_back[15],
+        &mut_back[16], &mut_back[17], &mut_back[18], &mut_back[19],
+        &mut_back[20], &mut_back[21], &mut_back[22], &mut_back[23],
+        &mut_back[24], &mut_back[25], &mut_back[26], &mut_back[27],
+        &mut_back[28], &mut_back[29], &mut_back[30], &mut_back[31]
+    };
+    return muts[hash<const void*>()(p) & (__sp_mut_count-1)];
+}
+
+#endif // !defined(_LIBCPP_HAS_NO_THREADS)
+
+void*
+align(size_t alignment, size_t size, void*& ptr, size_t& space)
+{
+    void* r = nullptr;
+    if (size <= space)
+    {
+        char* p1 = static_cast<char*>(ptr);
+        char* p2 = reinterpret_cast<char*>(reinterpret_cast<uintptr_t>(p1 + (alignment - 1)) & -alignment);
+        size_t d = static_cast<size_t>(p2 - p1);
+        if (d <= space - size)
+        {
+            r = p2;
+            ptr = r;
+            space -= d;
+        }
+    }
+    return r;
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/memory_resource.cpp b/app/src/main/cpp/libcxx/src/memory_resource.cpp
new file mode 100644
index 0000000..e00611d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/memory_resource.cpp
@@ -0,0 +1,496 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+#include <memory_resource>
+
+#ifndef _LIBCPP_HAS_NO_ATOMIC_HEADER
+#  include <atomic>
+#elif !defined(_LIBCPP_HAS_NO_THREADS)
+#  include <mutex>
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace pmr {
+
+// memory_resource
+
+memory_resource::~memory_resource() = default;
+
+// new_delete_resource()
+
+#ifdef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
+static bool is_aligned_to(void* ptr, size_t align) {
+  void* p2     = ptr;
+  size_t space = 1;
+  void* result = std::align(align, 1, p2, space);
+  return (result == ptr);
+}
+#endif
+
+class _LIBCPP_TYPE_VIS __new_delete_memory_resource_imp : public memory_resource {
+  void* do_allocate(size_t bytes, size_t align) override {
+#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
+    return std::__libcpp_allocate(bytes, align);
+#else
+    if (bytes == 0)
+      bytes = 1;
+    void* result = std::__libcpp_allocate(bytes, align);
+    if (!is_aligned_to(result, align)) {
+      std::__libcpp_deallocate(result, bytes, align);
+      __throw_bad_alloc();
+    }
+    return result;
+#endif
+  }
+
+  void do_deallocate(void* p, size_t bytes, size_t align) override { std::__libcpp_deallocate(p, bytes, align); }
+
+  bool do_is_equal(const memory_resource& other) const noexcept override { return &other == this; }
+};
+
+// null_memory_resource()
+
+class _LIBCPP_TYPE_VIS __null_memory_resource_imp : public memory_resource {
+  void* do_allocate(size_t, size_t) override { __throw_bad_alloc(); }
+  void do_deallocate(void*, size_t, size_t) override {}
+  bool do_is_equal(const memory_resource& other) const noexcept override { return &other == this; }
+};
+
+namespace {
+
+union ResourceInitHelper {
+  struct {
+    __new_delete_memory_resource_imp new_delete_res;
+    __null_memory_resource_imp null_res;
+  } resources;
+  char dummy;
+  _LIBCPP_CONSTEXPR_SINCE_CXX14 ResourceInitHelper() : resources() {}
+  ~ResourceInitHelper() {}
+};
+
+// Pretend we're inside a system header so the compiler doesn't flag the use of the init_priority
+// attribute with a value that's reserved for the implementation (we're the implementation).
+#include "memory_resource_init_helper.h"
+
+} // end namespace
+
+memory_resource* new_delete_resource() noexcept { return &res_init.resources.new_delete_res; }
+
+memory_resource* null_memory_resource() noexcept { return &res_init.resources.null_res; }
+
+// default_memory_resource()
+
+static memory_resource* __default_memory_resource(bool set = false, memory_resource* new_res = nullptr) noexcept {
+#ifndef _LIBCPP_HAS_NO_ATOMIC_HEADER
+  static constinit atomic<memory_resource*> __res{&res_init.resources.new_delete_res};
+  if (set) {
+    new_res = new_res ? new_res : new_delete_resource();
+    // TODO: Can a weaker ordering be used?
+    return std::atomic_exchange_explicit(&__res, new_res, memory_order_acq_rel);
+  } else {
+    return std::atomic_load_explicit(&__res, memory_order_acquire);
+  }
+#elif !defined(_LIBCPP_HAS_NO_THREADS)
+  static constinit memory_resource* res = &res_init.resources.new_delete_res;
+  static mutex res_lock;
+  if (set) {
+    new_res = new_res ? new_res : new_delete_resource();
+    lock_guard<mutex> guard(res_lock);
+    memory_resource* old_res = res;
+    res = new_res;
+    return old_res;
+  } else {
+    lock_guard<mutex> guard(res_lock);
+    return res;
+  }
+#else
+  static constinit memory_resource* res = &res_init.resources.new_delete_res;
+  if (set) {
+    new_res                  = new_res ? new_res : new_delete_resource();
+    memory_resource* old_res = res;
+    res                      = new_res;
+    return old_res;
+  } else {
+    return res;
+  }
+#endif
+}
+
+memory_resource* get_default_resource() noexcept { return __default_memory_resource(); }
+
+memory_resource* set_default_resource(memory_resource* __new_res) noexcept {
+  return __default_memory_resource(true, __new_res);
+}
+
+// 23.12.5, mem.res.pool
+
+static size_t roundup(size_t count, size_t alignment) {
+  size_t mask = alignment - 1;
+  return (count + mask) & ~mask;
+}
+
+struct unsynchronized_pool_resource::__adhoc_pool::__chunk_footer {
+  __chunk_footer* __next_;
+  char* __start_;
+  size_t __align_;
+  size_t __allocation_size() { return (reinterpret_cast<char*>(this) - __start_) + sizeof(*this); }
+};
+
+void unsynchronized_pool_resource::__adhoc_pool::__release_ptr(memory_resource* upstream) {
+  while (__first_ != nullptr) {
+    __chunk_footer* next = __first_->__next_;
+    upstream->deallocate(__first_->__start_, __first_->__allocation_size(), __first_->__align_);
+    __first_ = next;
+  }
+}
+
+void* unsynchronized_pool_resource::__adhoc_pool::__do_allocate(memory_resource* upstream, size_t bytes, size_t align) {
+  const size_t footer_size  = sizeof(__chunk_footer);
+  const size_t footer_align = alignof(__chunk_footer);
+
+  if (align < footer_align)
+    align = footer_align;
+
+  size_t aligned_capacity = roundup(bytes, footer_align) + footer_size;
+
+  void* result = upstream->allocate(aligned_capacity, align);
+
+  __chunk_footer* h = (__chunk_footer*)((char*)result + aligned_capacity - footer_size);
+  h->__next_        = __first_;
+  h->__start_       = (char*)result;
+  h->__align_       = align;
+  __first_          = h;
+  return result;
+}
+
+void unsynchronized_pool_resource::__adhoc_pool::__do_deallocate(
+    memory_resource* upstream, void* p, size_t bytes, size_t align) {
+  _LIBCPP_ASSERT(__first_ != nullptr, "deallocating a block that was not allocated with this allocator");
+  if (__first_->__start_ == p) {
+    __chunk_footer* next = __first_->__next_;
+    upstream->deallocate(p, __first_->__allocation_size(), __first_->__align_);
+    __first_ = next;
+  } else {
+    for (__chunk_footer* h = __first_; h->__next_ != nullptr; h = h->__next_) {
+      if (h->__next_->__start_ == p) {
+        __chunk_footer* next = h->__next_->__next_;
+        upstream->deallocate(p, h->__next_->__allocation_size(), h->__next_->__align_);
+        h->__next_ = next;
+        return;
+      }
+    }
+    _LIBCPP_ASSERT(false, "deallocating a block that was not allocated with this allocator");
+  }
+}
+
+class unsynchronized_pool_resource::__fixed_pool {
+  struct __chunk_footer {
+    __chunk_footer* __next_;
+    char* __start_;
+    size_t __align_;
+    size_t __allocation_size() { return (reinterpret_cast<char*>(this) - __start_) + sizeof(*this); }
+  };
+
+  struct __vacancy_header {
+    __vacancy_header* __next_vacancy_;
+  };
+
+  __chunk_footer* __first_chunk_     = nullptr;
+  __vacancy_header* __first_vacancy_ = nullptr;
+
+public:
+  explicit __fixed_pool() = default;
+
+  void __release_ptr(memory_resource* upstream) {
+    __first_vacancy_ = nullptr;
+    while (__first_chunk_ != nullptr) {
+      __chunk_footer* next = __first_chunk_->__next_;
+      upstream->deallocate(__first_chunk_->__start_, __first_chunk_->__allocation_size(), __first_chunk_->__align_);
+      __first_chunk_ = next;
+    }
+  }
+
+  void* __try_allocate_from_vacancies() {
+    if (__first_vacancy_ != nullptr) {
+      void* result     = __first_vacancy_;
+      __first_vacancy_ = __first_vacancy_->__next_vacancy_;
+      return result;
+    }
+    return nullptr;
+  }
+
+  void* __allocate_in_new_chunk(memory_resource* upstream, size_t block_size, size_t chunk_size) {
+    _LIBCPP_ASSERT(chunk_size % block_size == 0, "");
+    static_assert(__default_alignment >= alignof(std::max_align_t), "");
+    static_assert(__default_alignment >= alignof(__chunk_footer), "");
+    static_assert(__default_alignment >= alignof(__vacancy_header), "");
+
+    const size_t footer_size  = sizeof(__chunk_footer);
+    const size_t footer_align = alignof(__chunk_footer);
+
+    size_t aligned_capacity = roundup(chunk_size, footer_align) + footer_size;
+
+    void* result = upstream->allocate(aligned_capacity, __default_alignment);
+
+    __chunk_footer* h = (__chunk_footer*)((char*)result + aligned_capacity - footer_size);
+    h->__next_        = __first_chunk_;
+    h->__start_       = (char*)result;
+    h->__align_       = __default_alignment;
+    __first_chunk_    = h;
+
+    if (chunk_size > block_size) {
+      __vacancy_header* last_vh = this->__first_vacancy_;
+      for (size_t i = block_size; i != chunk_size; i += block_size) {
+        __vacancy_header* vh = (__vacancy_header*)((char*)result + i);
+        vh->__next_vacancy_  = last_vh;
+        last_vh              = vh;
+      }
+      this->__first_vacancy_ = last_vh;
+    }
+    return result;
+  }
+
+  void __evacuate(void* p) {
+    __vacancy_header* vh = (__vacancy_header*)(p);
+    vh->__next_vacancy_  = __first_vacancy_;
+    __first_vacancy_     = vh;
+  }
+
+  size_t __previous_chunk_size_in_bytes() const { return __first_chunk_ ? __first_chunk_->__allocation_size() : 0; }
+
+  static const size_t __default_alignment = alignof(max_align_t);
+};
+
+size_t unsynchronized_pool_resource::__pool_block_size(int i) const { return size_t(1) << __log2_pool_block_size(i); }
+
+int unsynchronized_pool_resource::__log2_pool_block_size(int i) const { return (i + __log2_smallest_block_size); }
+
+int unsynchronized_pool_resource::__pool_index(size_t bytes, size_t align) const {
+  if (align > alignof(std::max_align_t) || bytes > (size_t(1) << __num_fixed_pools_))
+    return __num_fixed_pools_;
+  else {
+    int i = 0;
+    bytes = (bytes > align) ? bytes : align;
+    bytes -= 1;
+    bytes >>= __log2_smallest_block_size;
+    while (bytes != 0) {
+      bytes >>= 1;
+      i += 1;
+    }
+    return i;
+  }
+}
+
+unsynchronized_pool_resource::unsynchronized_pool_resource(const pool_options& opts, memory_resource* upstream)
+    : __res_(upstream), __fixed_pools_(nullptr) {
+  size_t largest_block_size;
+  if (opts.largest_required_pool_block == 0)
+    largest_block_size = __default_largest_block_size;
+  else if (opts.largest_required_pool_block < __smallest_block_size)
+    largest_block_size = __smallest_block_size;
+  else if (opts.largest_required_pool_block > __max_largest_block_size)
+    largest_block_size = __max_largest_block_size;
+  else
+    largest_block_size = opts.largest_required_pool_block;
+
+  if (opts.max_blocks_per_chunk == 0)
+    __options_max_blocks_per_chunk_ = __max_blocks_per_chunk;
+  else if (opts.max_blocks_per_chunk < __min_blocks_per_chunk)
+    __options_max_blocks_per_chunk_ = __min_blocks_per_chunk;
+  else if (opts.max_blocks_per_chunk > __max_blocks_per_chunk)
+    __options_max_blocks_per_chunk_ = __max_blocks_per_chunk;
+  else
+    __options_max_blocks_per_chunk_ = opts.max_blocks_per_chunk;
+
+  __num_fixed_pools_ = 1;
+  size_t capacity    = __smallest_block_size;
+  while (capacity < largest_block_size) {
+    capacity <<= 1;
+    __num_fixed_pools_ += 1;
+  }
+}
+
+pool_options unsynchronized_pool_resource::options() const {
+  pool_options p;
+  p.max_blocks_per_chunk        = __options_max_blocks_per_chunk_;
+  p.largest_required_pool_block = __pool_block_size(__num_fixed_pools_ - 1);
+  return p;
+}
+
+void unsynchronized_pool_resource::release() {
+  __adhoc_pool_.__release_ptr(__res_);
+  if (__fixed_pools_ != nullptr) {
+    const int n = __num_fixed_pools_;
+    for (int i = 0; i < n; ++i)
+      __fixed_pools_[i].__release_ptr(__res_);
+    __res_->deallocate(__fixed_pools_, __num_fixed_pools_ * sizeof(__fixed_pool), alignof(__fixed_pool));
+    __fixed_pools_ = nullptr;
+  }
+}
+
+void* unsynchronized_pool_resource::do_allocate(size_t bytes, size_t align) {
+  // A pointer to allocated storage (6.6.4.4.1) with a size of at least bytes.
+  // The size and alignment of the allocated memory shall meet the requirements for
+  // a class derived from memory_resource (23.12).
+  // If the pool selected for a block of size bytes is unable to satisfy the memory request
+  // from its own internal data structures, it will call upstream_resource()->allocate()
+  // to obtain more memory. If bytes is larger than that which the largest pool can handle,
+  // then memory will be allocated using upstream_resource()->allocate().
+
+  int i = __pool_index(bytes, align);
+  if (i == __num_fixed_pools_)
+    return __adhoc_pool_.__do_allocate(__res_, bytes, align);
+  else {
+    if (__fixed_pools_ == nullptr) {
+      __fixed_pools_ =
+          (__fixed_pool*)__res_->allocate(__num_fixed_pools_ * sizeof(__fixed_pool), alignof(__fixed_pool));
+      __fixed_pool* first = __fixed_pools_;
+      __fixed_pool* last  = __fixed_pools_ + __num_fixed_pools_;
+      for (__fixed_pool* pool = first; pool != last; ++pool)
+        ::new ((void*)pool) __fixed_pool;
+    }
+    void* result = __fixed_pools_[i].__try_allocate_from_vacancies();
+    if (result == nullptr) {
+      auto min = [](size_t a, size_t b) { return a < b ? a : b; };
+      auto max = [](size_t a, size_t b) { return a < b ? b : a; };
+
+      size_t prev_chunk_size_in_bytes  = __fixed_pools_[i].__previous_chunk_size_in_bytes();
+      size_t prev_chunk_size_in_blocks = prev_chunk_size_in_bytes >> __log2_pool_block_size(i);
+
+      size_t chunk_size_in_blocks;
+
+      if (prev_chunk_size_in_blocks == 0) {
+        size_t min_blocks_per_chunk = max(__min_bytes_per_chunk >> __log2_pool_block_size(i), __min_blocks_per_chunk);
+        chunk_size_in_blocks        = min_blocks_per_chunk;
+      } else {
+        static_assert(__max_bytes_per_chunk <= SIZE_MAX - (__max_bytes_per_chunk / 4), "unsigned overflow is possible");
+        chunk_size_in_blocks = prev_chunk_size_in_blocks + (prev_chunk_size_in_blocks / 4);
+      }
+
+      size_t max_blocks_per_chunk =
+          min((__max_bytes_per_chunk >> __log2_pool_block_size(i)),
+              min(__max_blocks_per_chunk, __options_max_blocks_per_chunk_));
+      if (chunk_size_in_blocks > max_blocks_per_chunk)
+        chunk_size_in_blocks = max_blocks_per_chunk;
+
+      size_t block_size = __pool_block_size(i);
+
+      size_t chunk_size_in_bytes = (chunk_size_in_blocks << __log2_pool_block_size(i));
+      result                     = __fixed_pools_[i].__allocate_in_new_chunk(__res_, block_size, chunk_size_in_bytes);
+    }
+    return result;
+  }
+}
+
+void unsynchronized_pool_resource::do_deallocate(void* p, size_t bytes, size_t align) {
+  // Returns the memory at p to the pool. It is unspecified if,
+  // or under what circumstances, this operation will result in
+  // a call to upstream_resource()->deallocate().
+
+  int i = __pool_index(bytes, align);
+  if (i == __num_fixed_pools_)
+    return __adhoc_pool_.__do_deallocate(__res_, p, bytes, align);
+  else {
+    _LIBCPP_ASSERT(__fixed_pools_ != nullptr, "deallocating a block that was not allocated with this allocator");
+    __fixed_pools_[i].__evacuate(p);
+  }
+}
+
+bool synchronized_pool_resource::do_is_equal(const memory_resource& other) const noexcept { return &other == this; }
+
+// 23.12.6, mem.res.monotonic.buffer
+
+static void* align_down(size_t align, size_t size, void*& ptr, size_t& space) {
+  if (size > space)
+    return nullptr;
+
+  char* p1      = static_cast<char*>(ptr);
+  char* new_ptr = reinterpret_cast<char*>(reinterpret_cast<uintptr_t>(p1 - size) & ~(align - 1));
+
+  if (new_ptr < (p1 - space))
+    return nullptr;
+
+  ptr = new_ptr;
+  space -= p1 - new_ptr;
+
+  return ptr;
+}
+
+void* monotonic_buffer_resource::__initial_descriptor::__try_allocate_from_chunk(size_t bytes, size_t align) {
+  if (!__cur_)
+    return nullptr;
+  void* new_ptr       = static_cast<void*>(__cur_);
+  size_t new_capacity = (__cur_ - __start_);
+  void* aligned_ptr   = align_down(align, bytes, new_ptr, new_capacity);
+  if (aligned_ptr != nullptr)
+    __cur_ = static_cast<char*>(new_ptr);
+  return aligned_ptr;
+}
+
+void* monotonic_buffer_resource::__chunk_footer::__try_allocate_from_chunk(size_t bytes, size_t align) {
+  void* new_ptr       = static_cast<void*>(__cur_);
+  size_t new_capacity = (__cur_ - __start_);
+  void* aligned_ptr   = align_down(align, bytes, new_ptr, new_capacity);
+  if (aligned_ptr != nullptr)
+    __cur_ = static_cast<char*>(new_ptr);
+  return aligned_ptr;
+}
+
+void* monotonic_buffer_resource::do_allocate(size_t bytes, size_t align) {
+  const size_t footer_size  = sizeof(__chunk_footer);
+  const size_t footer_align = alignof(__chunk_footer);
+
+  auto previous_allocation_size = [&]() {
+    if (__chunks_ != nullptr)
+      return __chunks_->__allocation_size();
+
+    size_t newsize = (__initial_.__start_ != nullptr) ? (__initial_.__end_ - __initial_.__start_) : __initial_.__size_;
+
+    return roundup(newsize, footer_align) + footer_size;
+  };
+
+  if (void* result = __initial_.__try_allocate_from_chunk(bytes, align))
+    return result;
+  if (__chunks_ != nullptr) {
+    if (void* result = __chunks_->__try_allocate_from_chunk(bytes, align))
+      return result;
+  }
+
+  // Allocate a brand-new chunk.
+
+  if (align < footer_align)
+    align = footer_align;
+
+  size_t aligned_capacity  = roundup(bytes, footer_align) + footer_size;
+  size_t previous_capacity = previous_allocation_size();
+
+  if (aligned_capacity <= previous_capacity) {
+    size_t newsize   = 2 * (previous_capacity - footer_size);
+    aligned_capacity = roundup(newsize, footer_align) + footer_size;
+  }
+
+  char* start            = (char*)__res_->allocate(aligned_capacity, align);
+  auto end               = start + aligned_capacity - footer_size;
+  __chunk_footer* footer = (__chunk_footer*)(end);
+  footer->__next_        = __chunks_;
+  footer->__start_       = start;
+  footer->__cur_         = end;
+  footer->__align_       = align;
+  __chunks_              = footer;
+
+  return __chunks_->__try_allocate_from_chunk(bytes, align);
+}
+
+} // namespace pmr
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/memory_resource_init_helper.h b/app/src/main/cpp/libcxx/src/memory_resource_init_helper.h
new file mode 100644
index 0000000..032edc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/memory_resource_init_helper.h
@@ -0,0 +1,2 @@
+#pragma GCC system_header
+static constinit ResourceInitHelper res_init _LIBCPP_INIT_PRIORITY_MAX;
diff --git a/app/src/main/cpp/libcxx/src/mutex.cpp b/app/src/main/cpp/libcxx/src/mutex.cpp
new file mode 100644
index 0000000..01b7420
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/mutex.cpp
@@ -0,0 +1,267 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <limits>
+#include <mutex>
+#include <system_error>
+
+#include "include/atomic_support.h"
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+const defer_lock_t  defer_lock{};
+const try_to_lock_t try_to_lock{};
+const adopt_lock_t  adopt_lock{};
+
+// ~mutex is defined elsewhere
+
+void
+mutex::lock()
+{
+    int ec = __libcpp_mutex_lock(&__m_);
+    if (ec)
+        __throw_system_error(ec, "mutex lock failed");
+}
+
+bool
+mutex::try_lock() noexcept
+{
+    return __libcpp_mutex_trylock(&__m_);
+}
+
+void
+mutex::unlock() noexcept
+{
+    int ec = __libcpp_mutex_unlock(&__m_);
+    (void)ec;
+    _LIBCPP_ASSERT(ec == 0, "call to mutex::unlock failed");
+}
+
+// recursive_mutex
+
+recursive_mutex::recursive_mutex()
+{
+    int ec = __libcpp_recursive_mutex_init(&__m_);
+    if (ec)
+        __throw_system_error(ec, "recursive_mutex constructor failed");
+}
+
+recursive_mutex::~recursive_mutex()
+{
+    int e = __libcpp_recursive_mutex_destroy(&__m_);
+    (void)e;
+    _LIBCPP_ASSERT(e == 0, "call to ~recursive_mutex() failed");
+}
+
+void
+recursive_mutex::lock()
+{
+    int ec = __libcpp_recursive_mutex_lock(&__m_);
+    if (ec)
+        __throw_system_error(ec, "recursive_mutex lock failed");
+}
+
+void
+recursive_mutex::unlock() noexcept
+{
+    int e = __libcpp_recursive_mutex_unlock(&__m_);
+    (void)e;
+    _LIBCPP_ASSERT(e == 0, "call to recursive_mutex::unlock() failed");
+}
+
+bool
+recursive_mutex::try_lock() noexcept
+{
+    return __libcpp_recursive_mutex_trylock(&__m_);
+}
+
+// timed_mutex
+
+timed_mutex::timed_mutex()
+    : __locked_(false)
+{
+}
+
+timed_mutex::~timed_mutex()
+{
+    lock_guard<mutex> _(__m_);
+}
+
+void
+timed_mutex::lock()
+{
+    unique_lock<mutex> lk(__m_);
+    while (__locked_)
+        __cv_.wait(lk);
+    __locked_ = true;
+}
+
+bool
+timed_mutex::try_lock() noexcept
+{
+    unique_lock<mutex> lk(__m_, try_to_lock);
+    if (lk.owns_lock() && !__locked_)
+    {
+        __locked_ = true;
+        return true;
+    }
+    return false;
+}
+
+void
+timed_mutex::unlock() noexcept
+{
+    lock_guard<mutex> _(__m_);
+    __locked_ = false;
+    __cv_.notify_one();
+}
+
+// recursive_timed_mutex
+
+recursive_timed_mutex::recursive_timed_mutex()
+    : __count_(0),
+      __id_{}
+{
+}
+
+recursive_timed_mutex::~recursive_timed_mutex()
+{
+    lock_guard<mutex> _(__m_);
+}
+
+void
+recursive_timed_mutex::lock()
+{
+    __thread_id id = this_thread::get_id();
+    unique_lock<mutex> lk(__m_);
+    if (id ==__id_)
+    {
+        if (__count_ == numeric_limits<size_t>::max())
+            __throw_system_error(EAGAIN, "recursive_timed_mutex lock limit reached");
+        ++__count_;
+        return;
+    }
+    while (__count_ != 0)
+        __cv_.wait(lk);
+    __count_ = 1;
+    __id_ = id;
+}
+
+bool
+recursive_timed_mutex::try_lock() noexcept
+{
+    __thread_id id = this_thread::get_id();
+    unique_lock<mutex> lk(__m_, try_to_lock);
+    if (lk.owns_lock() && (__count_ == 0 || id == __id_))
+    {
+        if (__count_ == numeric_limits<size_t>::max())
+            return false;
+        ++__count_;
+        __id_ = id;
+        return true;
+    }
+    return false;
+}
+
+void
+recursive_timed_mutex::unlock() noexcept
+{
+    unique_lock<mutex> lk(__m_);
+    if (--__count_ == 0)
+    {
+        __id_.__reset();
+        lk.unlock();
+        __cv_.notify_one();
+    }
+}
+
+#endif // !_LIBCPP_HAS_NO_THREADS
+
+// If dispatch_once_f ever handles C++ exceptions, and if one can get to it
+// without illegal macros (unexpected macros not beginning with _UpperCase or
+// __lowercase), and if it stops spinning waiting threads, then call_once should
+// call into dispatch_once_f instead of here. Relevant radar this code needs to
+// keep in sync with:  7741191.
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+static constinit __libcpp_mutex_t mut = _LIBCPP_MUTEX_INITIALIZER;
+static constinit __libcpp_condvar_t cv = _LIBCPP_CONDVAR_INITIALIZER;
+#endif
+
+void __call_once(volatile once_flag::_State_type& flag, void* arg,
+                 void (*func)(void*))
+{
+#if defined(_LIBCPP_HAS_NO_THREADS)
+    if (flag == 0)
+    {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        try
+        {
+#endif // _LIBCPP_NO_EXCEPTIONS
+            flag = 1;
+            func(arg);
+            flag = ~once_flag::_State_type(0);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        }
+        catch (...)
+        {
+            flag = 0;
+            throw;
+        }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    }
+#else // !_LIBCPP_HAS_NO_THREADS
+    __libcpp_mutex_lock(&mut);
+    while (flag == 1)
+        __libcpp_condvar_wait(&cv, &mut);
+    if (flag == 0)
+    {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        try
+        {
+#endif // _LIBCPP_NO_EXCEPTIONS
+            __libcpp_relaxed_store(&flag, once_flag::_State_type(1));
+            __libcpp_mutex_unlock(&mut);
+            func(arg);
+            __libcpp_mutex_lock(&mut);
+            __libcpp_atomic_store(&flag, ~once_flag::_State_type(0),
+                                  _AO_Release);
+            __libcpp_mutex_unlock(&mut);
+            __libcpp_condvar_broadcast(&cv);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        }
+        catch (...)
+        {
+            __libcpp_mutex_lock(&mut);
+            __libcpp_relaxed_store(&flag, once_flag::_State_type(0));
+            __libcpp_mutex_unlock(&mut);
+            __libcpp_condvar_broadcast(&cv);
+            throw;
+        }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    }
+    else
+        __libcpp_mutex_unlock(&mut);
+#endif // !_LIBCPP_HAS_NO_THREADS
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
diff --git a/app/src/main/cpp/libcxx/src/mutex_destructor.cpp b/app/src/main/cpp/libcxx/src/mutex_destructor.cpp
new file mode 100644
index 0000000..6850b6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/mutex_destructor.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Define ~mutex.
+//
+// On some platforms ~mutex has been made trivial and the definition is only
+// provided for ABI compatibility.
+//
+// In order to avoid ODR violations within libc++ itself, we need to ensure
+// that *nothing* sees the non-trivial mutex declaration. For this reason
+// we re-declare the entire class in this file instead of using
+// _LIBCPP_BUILDING_LIBRARY to change the definition in the headers.
+
+#include <__config>
+#include <__threading_support>
+
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#  if _LIBCPP_ABI_VERSION == 1 || !defined(_LIBCPP_HAS_TRIVIAL_MUTEX_DESTRUCTION)
+#    define NEEDS_MUTEX_DESTRUCTOR
+#  endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifdef NEEDS_MUTEX_DESTRUCTOR
+class _LIBCPP_TYPE_VIS mutex
+{
+    __libcpp_mutex_t __m_ = _LIBCPP_MUTEX_INITIALIZER;
+
+public:
+    _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY
+    constexpr mutex() = default;
+    mutex(const mutex&) = delete;
+    mutex& operator=(const mutex&) = delete;
+    ~mutex() noexcept;
+};
+
+
+mutex::~mutex() noexcept
+{
+    __libcpp_mutex_destroy(&__m_);
+}
+
+#endif // !_LIBCPP_HAS_NO_THREADS
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/new.cpp b/app/src/main/cpp/libcxx/src/new.cpp
new file mode 100644
index 0000000..48d6f99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/new.cpp
@@ -0,0 +1,293 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <new>
+#include <stdlib.h>
+
+#include "include/atomic_support.h"
+
+#if defined(_LIBCPP_ABI_MICROSOFT)
+#   if !defined(_LIBCPP_ABI_VCRUNTIME)
+#       include "support/runtime/new_handler_fallback.ipp"
+#   endif
+#elif defined(LIBCXX_BUILDING_LIBCXXABI)
+#   include <cxxabi.h>
+#elif defined(LIBCXXRT)
+#   include <cxxabi.h>
+#   include "support/runtime/new_handler_fallback.ipp"
+#elif defined(__GLIBCXX__)
+    // nothing to do
+#else
+#   include "support/runtime/new_handler_fallback.ipp"
+#endif
+
+namespace std
+{
+
+#ifndef __GLIBCXX__
+const nothrow_t nothrow{};
+#endif
+
+#ifndef LIBSTDCXX
+
+void
+__throw_bad_alloc()
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    throw bad_alloc();
+#else
+    _VSTD::abort();
+#endif
+}
+
+#endif // !LIBSTDCXX
+
+}  // std
+
+#if !defined(__GLIBCXX__) &&                                                   \
+    !defined(_LIBCPP_ABI_VCRUNTIME) &&      \
+    !defined(_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS)
+
+// Implement all new and delete operators as weak definitions
+// in this shared library, so that they can be overridden by programs
+// that define non-weak copies of the functions.
+
+_LIBCPP_WEAK
+void *
+operator new(std::size_t size) _THROW_BAD_ALLOC
+{
+    if (size == 0)
+        size = 1;
+    void* p;
+    while ((p = ::malloc(size)) == nullptr)
+    {
+        // If malloc fails and there is a new_handler,
+        // call it to try free up memory.
+        std::new_handler nh = std::get_new_handler();
+        if (nh)
+            nh();
+        else
+#ifndef _LIBCPP_NO_EXCEPTIONS
+            throw std::bad_alloc();
+#else
+            break;
+#endif
+    }
+    return p;
+}
+
+_LIBCPP_WEAK
+void*
+operator new(size_t size, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        p = ::operator new(size);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCPP_WEAK
+void*
+operator new[](size_t size) _THROW_BAD_ALLOC
+{
+    return ::operator new(size);
+}
+
+_LIBCPP_WEAK
+void*
+operator new[](size_t size, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        p = ::operator new[](size);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCPP_WEAK
+void
+operator delete(void* ptr) noexcept
+{
+    ::free(ptr);
+}
+
+_LIBCPP_WEAK
+void
+operator delete(void* ptr, const std::nothrow_t&) noexcept
+{
+    ::operator delete(ptr);
+}
+
+_LIBCPP_WEAK
+void
+operator delete(void* ptr, size_t) noexcept
+{
+    ::operator delete(ptr);
+}
+
+_LIBCPP_WEAK
+void
+operator delete[] (void* ptr) noexcept
+{
+    ::operator delete(ptr);
+}
+
+_LIBCPP_WEAK
+void
+operator delete[] (void* ptr, const std::nothrow_t&) noexcept
+{
+    ::operator delete[](ptr);
+}
+
+_LIBCPP_WEAK
+void
+operator delete[] (void* ptr, size_t) noexcept
+{
+    ::operator delete[](ptr);
+}
+
+#if !defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION)
+
+_LIBCPP_WEAK
+void *
+operator new(std::size_t size, std::align_val_t alignment) _THROW_BAD_ALLOC
+{
+    if (size == 0)
+        size = 1;
+    if (static_cast<size_t>(alignment) < sizeof(void*))
+      alignment = std::align_val_t(sizeof(void*));
+
+    // Try allocating memory. If allocation fails and there is a new_handler,
+    // call it to try free up memory, and try again until it succeeds, or until
+    // the new_handler decides to terminate.
+    //
+    // If allocation fails and there is no new_handler, we throw bad_alloc
+    // (or return nullptr if exceptions are disabled).
+    void* p;
+    while ((p = std::__libcpp_aligned_alloc(static_cast<std::size_t>(alignment), size)) == nullptr)
+    {
+        std::new_handler nh = std::get_new_handler();
+        if (nh)
+            nh();
+        else {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+            throw std::bad_alloc();
+#else
+            break;
+#endif
+        }
+    }
+    return p;
+}
+
+_LIBCPP_WEAK
+void*
+operator new(size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        p = ::operator new(size, alignment);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCPP_WEAK
+void*
+operator new[](size_t size, std::align_val_t alignment) _THROW_BAD_ALLOC
+{
+    return ::operator new(size, alignment);
+}
+
+_LIBCPP_WEAK
+void*
+operator new[](size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    void* p = nullptr;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        p = ::operator new[](size, alignment);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+    return p;
+}
+
+_LIBCPP_WEAK
+void
+operator delete(void* ptr, std::align_val_t) noexcept
+{
+    std::__libcpp_aligned_free(ptr);
+}
+
+_LIBCPP_WEAK
+void
+operator delete(void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    ::operator delete(ptr, alignment);
+}
+
+_LIBCPP_WEAK
+void
+operator delete(void* ptr, size_t, std::align_val_t alignment) noexcept
+{
+    ::operator delete(ptr, alignment);
+}
+
+_LIBCPP_WEAK
+void
+operator delete[] (void* ptr, std::align_val_t alignment) noexcept
+{
+    ::operator delete(ptr, alignment);
+}
+
+_LIBCPP_WEAK
+void
+operator delete[] (void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept
+{
+    ::operator delete[](ptr, alignment);
+}
+
+_LIBCPP_WEAK
+void
+operator delete[] (void* ptr, size_t, std::align_val_t alignment) noexcept
+{
+    ::operator delete[](ptr, alignment);
+}
+
+#endif // !_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
+#endif // !__GLIBCXX__ && !_LIBCPP_ABI_VCRUNTIME && !_LIBCPP_DISABLE_NEW_DELETE_DEFINITIONS
diff --git a/app/src/main/cpp/libcxx/src/optional.cpp b/app/src/main/cpp/libcxx/src/optional.cpp
new file mode 100644
index 0000000..e2b5cce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/optional.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__availability>
+#include <optional>
+
+namespace std
+{
+
+bad_optional_access::~bad_optional_access() noexcept = default;
+
+const char* bad_optional_access::what() const noexcept {
+  return "bad_optional_access";
+}
+
+} // std
+
+
+#include <experimental/__config>
+
+//  Preserve std::experimental::bad_optional_access for ABI compatibility
+//  Even though it no longer exists in a header file
+_LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL
+
+class _LIBCPP_EXCEPTION_ABI _LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS bad_optional_access
+  : public std::logic_error
+{
+public:
+  bad_optional_access() : std::logic_error("Bad optional Access") {}
+
+  // Get the key function ~bad_optional_access() into the dylib
+  virtual ~bad_optional_access() noexcept;
+};
+
+bad_optional_access::~bad_optional_access() noexcept = default;
+
+_LIBCPP_END_NAMESPACE_EXPERIMENTAL
diff --git a/app/src/main/cpp/libcxx/src/random.cpp b/app/src/main/cpp/libcxx/src/random.cpp
new file mode 100644
index 0000000..3873246
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/random.cpp
@@ -0,0 +1,220 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+
+#if defined(_LIBCPP_USING_WIN32_RANDOM)
+    // Must be defined before including stdlib.h to enable rand_s().
+#   define _CRT_RAND_S
+#endif // defined(_LIBCPP_USING_WIN32_RANDOM)
+
+#include <limits>
+#include <random>
+#include <system_error>
+
+#if defined(__sun__)
+#   define rename solaris_headers_are_broken
+#endif // defined(__sun__)
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#if defined(_LIBCPP_USING_GETENTROPY)
+#   include <sys/random.h>
+#elif defined(_LIBCPP_USING_DEV_RANDOM)
+#   include <fcntl.h>
+#   include <unistd.h>
+#   if __has_include(<sys/ioctl.h>) && __has_include(<linux/random.h>)
+#       include <sys/ioctl.h>
+#       include <linux/random.h>
+#   endif
+#elif defined(_LIBCPP_USING_NACL_RANDOM)
+#   include <nacl/nacl_random.h>
+#elif defined(_LIBCPP_USING_FUCHSIA_CPRNG)
+#  include <zircon/syscalls.h>
+#endif
+
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if defined(_LIBCPP_USING_GETENTROPY)
+
+random_device::random_device(const string& __token)
+{
+    if (__token != "/dev/urandom")
+        __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+}
+
+random_device::~random_device()
+{
+}
+
+unsigned
+random_device::operator()()
+{
+    unsigned r;
+    size_t n = sizeof(r);
+    int err = getentropy(&r, n);
+    if (err)
+        __throw_system_error(errno, "random_device getentropy failed");
+    return r;
+}
+
+#elif defined(_LIBCPP_USING_ARC4_RANDOM)
+
+random_device::random_device(const string&)
+{
+}
+
+random_device::~random_device()
+{
+}
+
+unsigned
+random_device::operator()()
+{
+    return arc4random();
+}
+
+#elif defined(_LIBCPP_USING_DEV_RANDOM)
+
+random_device::random_device(const string& __token)
+    : __f_(open(__token.c_str(), O_RDONLY))
+{
+    if (__f_ < 0)
+        __throw_system_error(errno, ("random_device failed to open " + __token).c_str());
+}
+
+random_device::~random_device()
+{
+    close(__f_);
+}
+
+unsigned
+random_device::operator()()
+{
+    unsigned r;
+    size_t n = sizeof(r);
+    char* p = reinterpret_cast<char*>(&r);
+    while (n > 0)
+    {
+        ssize_t s = read(__f_, p, n);
+        if (s == 0)
+            __throw_system_error(ENODATA, "random_device got EOF");
+        if (s == -1)
+        {
+            if (errno != EINTR)
+                __throw_system_error(errno, "random_device got an unexpected error");
+            continue;
+        }
+        n -= static_cast<size_t>(s);
+        p += static_cast<size_t>(s);
+    }
+    return r;
+}
+
+#elif defined(_LIBCPP_USING_NACL_RANDOM)
+
+random_device::random_device(const string& __token)
+{
+    if (__token != "/dev/urandom")
+        __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+    int error = nacl_secure_random_init();
+    if (error)
+        __throw_system_error(error, ("random device failed to open " + __token).c_str());
+}
+
+random_device::~random_device()
+{
+}
+
+unsigned
+random_device::operator()()
+{
+    unsigned r;
+    size_t n = sizeof(r);
+    size_t bytes_written;
+    int error = nacl_secure_random(&r, n, &bytes_written);
+    if (error != 0)
+        __throw_system_error(error, "random_device failed getting bytes");
+    else if (bytes_written != n)
+        __throw_runtime_error("random_device failed to obtain enough bytes");
+    return r;
+}
+
+#elif defined(_LIBCPP_USING_WIN32_RANDOM)
+
+random_device::random_device(const string& __token)
+{
+    if (__token != "/dev/urandom")
+        __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+}
+
+random_device::~random_device()
+{
+}
+
+unsigned
+random_device::operator()()
+{
+    unsigned r;
+    errno_t err = rand_s(&r);
+    if (err)
+        __throw_system_error(err, "random_device rand_s failed.");
+    return r;
+}
+
+#elif defined(_LIBCPP_USING_FUCHSIA_CPRNG)
+
+random_device::random_device(const string& __token) {
+  if (__token != "/dev/urandom")
+    __throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
+}
+
+random_device::~random_device() {}
+
+unsigned random_device::operator()() {
+  // Implicitly link against the vDSO system call ABI without
+  // requiring the final link to specify -lzircon explicitly when
+  // statically linking libc++.
+#  pragma comment(lib, "zircon")
+
+  // The system call cannot fail.  It returns only when the bits are ready.
+  unsigned r;
+  _zx_cprng_draw(&r, sizeof(r));
+  return r;
+}
+
+#else
+#error "Random device not implemented for this architecture"
+#endif
+
+double
+random_device::entropy() const noexcept
+{
+#if defined(_LIBCPP_USING_DEV_RANDOM) && defined(RNDGETENTCNT)
+  int ent;
+  if (::ioctl(__f_, RNDGETENTCNT, &ent) < 0)
+    return 0;
+
+  if (ent < 0)
+    return 0;
+
+  if (ent > std::numeric_limits<result_type>::digits)
+    return std::numeric_limits<result_type>::digits;
+
+  return ent;
+#elif defined(_LIBCPP_USING_ARC4_RANDOM) || defined(_LIBCPP_USING_FUCHSIA_CPRNG)
+  return std::numeric_limits<result_type>::digits;
+#else
+  return 0;
+#endif
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/random_shuffle.cpp b/app/src/main/cpp/libcxx/src/random_shuffle.cpp
new file mode 100644
index 0000000..e9087a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/random_shuffle.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <random>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+#  include <mutex>
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+static constinit __libcpp_mutex_t __rs_mut = _LIBCPP_MUTEX_INITIALIZER;
+#endif
+unsigned __rs_default::__c_ = 0;
+
+__rs_default::__rs_default()
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    __libcpp_mutex_lock(&__rs_mut);
+#endif
+    __c_ = 1;
+}
+
+__rs_default::__rs_default(const __rs_default&)
+{
+    ++__c_;
+}
+
+__rs_default::~__rs_default()
+{
+#ifndef _LIBCPP_HAS_NO_THREADS
+    if (--__c_ == 0)
+       __libcpp_mutex_unlock(&__rs_mut);
+#else
+    --__c_;
+#endif
+}
+
+__rs_default::result_type
+__rs_default::operator()()
+{
+    static mt19937 __rs_g;
+    return __rs_g();
+}
+
+__rs_default
+__rs_get()
+{
+    return __rs_default();
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/regex.cpp b/app/src/main/cpp/libcxx/src/regex.cpp
new file mode 100644
index 0000000..e53d324
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/regex.cpp
@@ -0,0 +1,436 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <iterator>
+#include <regex>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+static
+const char*
+make_error_type_string(regex_constants::error_type ecode)
+{
+    switch (ecode)
+    {
+    case regex_constants::error_collate:
+        return "The expression contained an invalid collating element name.";
+    case regex_constants::error_ctype:
+        return "The expression contained an invalid character class name.";
+    case regex_constants::error_escape:
+        return "The expression contained an invalid escaped character, or a "
+               "trailing escape.";
+    case regex_constants::error_backref:
+        return "The expression contained an invalid back reference.";
+    case regex_constants::error_brack:
+        return "The expression contained mismatched [ and ].";
+    case regex_constants::error_paren:
+        return "The expression contained mismatched ( and ).";
+    case regex_constants::error_brace:
+        return "The expression contained mismatched { and }.";
+    case regex_constants::error_badbrace:
+        return "The expression contained an invalid range in a {} expression.";
+    case regex_constants::error_range:
+        return "The expression contained an invalid character range, "
+               "such as [b-a] in most encodings.";
+    case regex_constants::error_space:
+        return "There was insufficient memory to convert the expression into "
+               "a finite state machine.";
+    case regex_constants::error_badrepeat:
+        return "One of *?+{ was not preceded by a valid regular expression.";
+    case regex_constants::error_complexity:
+        return "The complexity of an attempted match against a regular "
+               "expression exceeded a pre-set level.";
+    case regex_constants::error_stack:
+        return "There was insufficient memory to determine whether the regular "
+               "expression could match the specified character sequence.";
+    case regex_constants::__re_err_grammar:
+        return "An invalid regex grammar has been requested.";
+    case regex_constants::__re_err_empty:
+        return "An empty regex is not allowed in the POSIX grammar.";
+    case regex_constants::__re_err_parse:
+        return "The parser did not consume the entire regular expression.";
+    default:
+        break;
+    }
+    return "Unknown error type";
+}
+
+regex_error::regex_error(regex_constants::error_type ecode)
+    : runtime_error(make_error_type_string(ecode)),
+      __code_(ecode)
+{}
+
+regex_error::~regex_error() throw() {}
+
+namespace {
+
+struct collationnames
+{
+    const char* elem_;
+    char char_;
+};
+
+#if defined(__MVS__) && !defined(__NATIVE_ASCII_F)
+// EBCDIC IBM-1047
+// Sorted via the EBCDIC collating sequence
+const collationnames collatenames[] =
+{
+    {"a", 0x81},
+    {"alert", 0x2f},
+    {"ampersand", 0x50},
+    {"apostrophe", 0x7d},
+    {"asterisk", 0x5c},
+    {"b", 0x82},
+    {"backslash", 0xe0},
+    {"backspace", 0x16},
+    {"c", 0x83},
+    {"carriage-return", 0xd},
+    {"circumflex", 0x5f},
+    {"circumflex-accent", 0x5f},
+    {"colon", 0x7a},
+    {"comma", 0x6b},
+    {"commercial-at", 0x7c},
+    {"d", 0x84},
+    {"dollar-sign", 0x5b},
+    {"e", 0x85},
+    {"eight", 0xf8},
+    {"equals-sign", 0x7e},
+    {"exclamation-mark", 0x5a},
+    {"f", 0x86},
+    {"five", 0xf5},
+    {"form-feed", 0xc},
+    {"four", 0xf4},
+    {"full-stop", 0x4b},
+    {"g", 0x87},
+    {"grave-accent", 0x79},
+    {"greater-than-sign", 0x6e},
+    {"h", 0x88},
+    {"hyphen", 0x60},
+    {"hyphen-minus", 0x60},
+    {"i", 0x89},
+    {"j", 0x91},
+    {"k", 0x92},
+    {"l", 0x93},
+    {"left-brace", 0xc0},
+    {"left-curly-bracket", 0xc0},
+    {"left-parenthesis", 0x4d},
+    {"left-square-bracket", 0xad},
+    {"less-than-sign", 0x4c},
+    {"low-line", 0x6d},
+    {"m", 0x94},
+    {"n", 0x95},
+    {"newline", 0x15},
+    {"nine", 0xf9},
+    {"number-sign", 0x7b},
+    {"o", 0x96},
+    {"one", 0xf1},
+    {"p", 0x97},
+    {"percent-sign", 0x6c},
+    {"period", 0x4b},
+    {"plus-sign", 0x4e},
+    {"q", 0x98},
+    {"question-mark", 0x6f},
+    {"quotation-mark", 0x7f},
+    {"r", 0x99},
+    {"reverse-solidus", 0xe0},
+    {"right-brace", 0xd0},
+    {"right-curly-bracket", 0xd0},
+    {"right-parenthesis", 0x5d},
+    {"right-square-bracket", 0xbd},
+    {"s", 0xa2},
+    {"semicolon", 0x5e},
+    {"seven", 0xf7},
+    {"six", 0xf6},
+    {"slash", 0x61},
+    {"solidus", 0x61},
+    {"space", 0x40},
+    {"t", 0xa3},
+    {"tab", 0x5},
+    {"three", 0xf3},
+    {"tilde", 0xa1},
+    {"two", 0xf2},
+    {"u", 0xa4},
+    {"underscore", 0x6d},
+    {"v", 0xa5},
+    {"vertical-line", 0x4f},
+    {"vertical-tab", 0xb},
+    {"w", 0xa6},
+    {"x", 0xa7},
+    {"y", 0xa8},
+    {"z", 0xa9},
+    {"zero", 0xf0},
+    {"A", 0xc1},
+    {"B", 0xc2},
+    {"C", 0xc3},
+    {"D", 0xc4},
+    {"E", 0xc5},
+    {"F", 0xc6},
+    {"G", 0xc7},
+    {"H", 0xc8},
+    {"I", 0xc9},
+    {"J", 0xd1},
+    {"K", 0xd2},
+    {"L", 0xd3},
+    {"M", 0xd4},
+    {"N", 0xd5},
+    {"NUL", 0},
+    {"O", 0xd6},
+    {"P", 0xd7},
+    {"Q", 0xd8},
+    {"R", 0xd9},
+    {"S", 0xe2},
+    {"T", 0xe3},
+    {"U", 0xe4},
+    {"V", 0xe5},
+    {"W", 0xe6},
+    {"X", 0xe7},
+    {"Y", 0xe8},
+    {"Z", 0xe9}
+};
+#else
+// ASCII
+const collationnames collatenames[] =
+{
+    {"A", 0x41},
+    {"B", 0x42},
+    {"C", 0x43},
+    {"D", 0x44},
+    {"E", 0x45},
+    {"F", 0x46},
+    {"G", 0x47},
+    {"H", 0x48},
+    {"I", 0x49},
+    {"J", 0x4a},
+    {"K", 0x4b},
+    {"L", 0x4c},
+    {"M", 0x4d},
+    {"N", 0x4e},
+    {"NUL", 0x00},
+    {"O", 0x4f},
+    {"P", 0x50},
+    {"Q", 0x51},
+    {"R", 0x52},
+    {"S", 0x53},
+    {"T", 0x54},
+    {"U", 0x55},
+    {"V", 0x56},
+    {"W", 0x57},
+    {"X", 0x58},
+    {"Y", 0x59},
+    {"Z", 0x5a},
+    {"a", 0x61},
+    {"alert", 0x07},
+    {"ampersand", 0x26},
+    {"apostrophe", 0x27},
+    {"asterisk", 0x2a},
+    {"b", 0x62},
+    {"backslash", 0x5c},
+    {"backspace", 0x08},
+    {"c", 0x63},
+    {"carriage-return", 0x0d},
+    {"circumflex", 0x5e},
+    {"circumflex-accent", 0x5e},
+    {"colon", 0x3a},
+    {"comma", 0x2c},
+    {"commercial-at", 0x40},
+    {"d", 0x64},
+    {"dollar-sign", 0x24},
+    {"e", 0x65},
+    {"eight", 0x38},
+    {"equals-sign", 0x3d},
+    {"exclamation-mark", 0x21},
+    {"f", 0x66},
+    {"five", 0x35},
+    {"form-feed", 0x0c},
+    {"four", 0x34},
+    {"full-stop", 0x2e},
+    {"g", 0x67},
+    {"grave-accent", 0x60},
+    {"greater-than-sign", 0x3e},
+    {"h", 0x68},
+    {"hyphen", 0x2d},
+    {"hyphen-minus", 0x2d},
+    {"i", 0x69},
+    {"j", 0x6a},
+    {"k", 0x6b},
+    {"l", 0x6c},
+    {"left-brace", 0x7b},
+    {"left-curly-bracket", 0x7b},
+    {"left-parenthesis", 0x28},
+    {"left-square-bracket", 0x5b},
+    {"less-than-sign", 0x3c},
+    {"low-line", 0x5f},
+    {"m", 0x6d},
+    {"n", 0x6e},
+    {"newline", 0x0a},
+    {"nine", 0x39},
+    {"number-sign", 0x23},
+    {"o", 0x6f},
+    {"one", 0x31},
+    {"p", 0x70},
+    {"percent-sign", 0x25},
+    {"period", 0x2e},
+    {"plus-sign", 0x2b},
+    {"q", 0x71},
+    {"question-mark", 0x3f},
+    {"quotation-mark", 0x22},
+    {"r", 0x72},
+    {"reverse-solidus", 0x5c},
+    {"right-brace", 0x7d},
+    {"right-curly-bracket", 0x7d},
+    {"right-parenthesis", 0x29},
+    {"right-square-bracket", 0x5d},
+    {"s", 0x73},
+    {"semicolon", 0x3b},
+    {"seven", 0x37},
+    {"six", 0x36},
+    {"slash", 0x2f},
+    {"solidus", 0x2f},
+    {"space", 0x20},
+    {"t", 0x74},
+    {"tab", 0x09},
+    {"three", 0x33},
+    {"tilde", 0x7e},
+    {"two", 0x32},
+    {"u", 0x75},
+    {"underscore", 0x5f},
+    {"v", 0x76},
+    {"vertical-line", 0x7c},
+    {"vertical-tab", 0x0b},
+    {"w", 0x77},
+    {"x", 0x78},
+    {"y", 0x79},
+    {"z", 0x7a},
+    {"zero", 0x30}
+};
+#endif
+
+struct classnames
+{
+    const char* elem_;
+    regex_traits<char>::char_class_type mask_;
+};
+
+const classnames ClassNames[] =
+{
+    {"alnum",  ctype_base::alnum},
+    {"alpha",  ctype_base::alpha},
+    {"blank",  ctype_base::blank},
+    {"cntrl",  ctype_base::cntrl},
+    {"d",      ctype_base::digit},
+    {"digit",  ctype_base::digit},
+    {"graph",  ctype_base::graph},
+    {"lower",  ctype_base::lower},
+    {"print",  ctype_base::print},
+    {"punct",  ctype_base::punct},
+    {"s",      ctype_base::space},
+    {"space",  ctype_base::space},
+    {"upper",  ctype_base::upper},
+    {"w",      regex_traits<char>::__regex_word},
+    {"xdigit", ctype_base::xdigit}
+};
+
+struct use_strcmp
+{
+    bool operator()(const collationnames& x, const char* y)
+        {return strcmp(x.elem_, y) < 0;}
+    bool operator()(const classnames& x, const char* y)
+        {return strcmp(x.elem_, y) < 0;}
+};
+
+}
+
+string
+__get_collation_name(const char* s)
+{
+    const collationnames* i =
+            _VSTD::lower_bound(begin(collatenames), end(collatenames), s, use_strcmp());
+    string r;
+    if (i != end(collatenames) && strcmp(s, i->elem_) == 0)
+        r = char(i->char_);
+    return r;
+}
+
+regex_traits<char>::char_class_type
+__get_classname(const char* s, bool __icase)
+{
+    const classnames* i =
+            _VSTD::lower_bound(begin(ClassNames), end(ClassNames), s, use_strcmp());
+    regex_traits<char>::char_class_type r = 0;
+    if (i != end(ClassNames) && strcmp(s, i->elem_) == 0)
+    {
+        r = i->mask_;
+        if (r == regex_traits<char>::__regex_word)
+            r |= ctype_base::alnum | ctype_base::upper | ctype_base::lower;
+        else if (__icase)
+        {
+            if (r & (ctype_base::lower | ctype_base::upper))
+                r |= ctype_base::alpha;
+        }
+    }
+    return r;
+}
+
+template <>
+void
+__match_any_but_newline<char>::__exec(__state& __s) const
+{
+    if (__s.__current_ != __s.__last_)
+    {
+        switch (*__s.__current_)
+        {
+        case '\r':
+        case '\n':
+            __s.__do_ = __state::__reject;
+            __s.__node_ = nullptr;
+            break;
+        default:
+            __s.__do_ = __state::__accept_and_consume;
+            ++__s.__current_;
+            __s.__node_ = this->first();
+            break;
+        }
+    }
+    else
+    {
+        __s.__do_ = __state::__reject;
+        __s.__node_ = nullptr;
+    }
+}
+
+template <>
+void
+__match_any_but_newline<wchar_t>::__exec(__state& __s) const
+{
+    if (__s.__current_ != __s.__last_)
+    {
+        switch (*__s.__current_)
+        {
+        case '\r':
+        case '\n':
+        case 0x2028:
+        case 0x2029:
+            __s.__do_ = __state::__reject;
+            __s.__node_ = nullptr;
+            break;
+        default:
+            __s.__do_ = __state::__accept_and_consume;
+            ++__s.__current_;
+            __s.__node_ = this->first();
+            break;
+        }
+    }
+    else
+    {
+        __s.__do_ = __state::__reject;
+        __s.__node_ = nullptr;
+    }
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/ryu/README.txt b/app/src/main/cpp/libcxx/src/ryu/README.txt
new file mode 100644
index 0000000..e3d1746
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/ryu/README.txt
@@ -0,0 +1,11 @@
+The code in this directory is based on Ulf Adams's work. The upstream for the
+code is:
+
+https://github.com/ulfjack/ryu/tree/59661c3/ryu
+
+The code has been adapted by Stephan T. Lavavej of Microsoft for usage in
+std::to_chars. This code has been contributed by Microsoft for inclusion in
+libc++.
+
+The code in this directory has a different coding style than other parts to
+minimize the number of changes by both upstream sources.
diff --git a/app/src/main/cpp/libcxx/src/ryu/d2fixed.cpp b/app/src/main/cpp/libcxx/src/ryu/d2fixed.cpp
new file mode 100644
index 0000000..c1a1f6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/ryu/d2fixed.cpp
@@ -0,0 +1,670 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__assert>
+#include <__config>
+#include <charconv>
+#include <cstring>
+#include <system_error>
+
+#include "include/ryu/common.h"
+#include "include/ryu/d2fixed.h"
+#include "include/ryu/d2fixed_full_table.h"
+#include "include/ryu/d2s.h"
+#include "include/ryu/d2s_intrinsics.h"
+#include "include/ryu/digit_table.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline constexpr int __POW10_ADDITIONAL_BITS = 120;
+
+#ifdef _LIBCPP_INTRINSIC128
+// Returns the low 64 bits of the high 128 bits of the 256-bit product of a and b.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __umul256_hi128_lo64(
+  const uint64_t __aHi, const uint64_t __aLo, const uint64_t __bHi, const uint64_t __bLo) {
+  uint64_t __b00Hi;
+  const uint64_t __b00Lo = __ryu_umul128(__aLo, __bLo, &__b00Hi);
+  uint64_t __b01Hi;
+  const uint64_t __b01Lo = __ryu_umul128(__aLo, __bHi, &__b01Hi);
+  uint64_t __b10Hi;
+  const uint64_t __b10Lo = __ryu_umul128(__aHi, __bLo, &__b10Hi);
+  uint64_t __b11Hi;
+  const uint64_t __b11Lo = __ryu_umul128(__aHi, __bHi, &__b11Hi);
+  (void) __b00Lo; // unused
+  (void) __b11Hi; // unused
+  const uint64_t __temp1Lo = __b10Lo + __b00Hi;
+  const uint64_t __temp1Hi = __b10Hi + (__temp1Lo < __b10Lo);
+  const uint64_t __temp2Lo = __b01Lo + __temp1Lo;
+  const uint64_t __temp2Hi = __b01Hi + (__temp2Lo < __b01Lo);
+  return __b11Lo + __temp1Hi + __temp2Hi;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __uint128_mod1e9(const uint64_t __vHi, const uint64_t __vLo) {
+  // After multiplying, we're going to shift right by 29, then truncate to uint32_t.
+  // This means that we need only 29 + 32 = 61 bits, so we can truncate to uint64_t before shifting.
+  const uint64_t __multiplied = __umul256_hi128_lo64(__vHi, __vLo, 0x89705F4136B4A597u, 0x31680A88F8953031u);
+
+  // For uint32_t truncation, see the __mod1e9() comment in d2s_intrinsics.h.
+  const uint32_t __shifted = static_cast<uint32_t>(__multiplied >> 29);
+
+  return static_cast<uint32_t>(__vLo) - 1000000000 * __shifted;
+}
+#endif // ^^^ intrinsics available ^^^
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __mulShift_mod1e9(const uint64_t __m, const uint64_t* const __mul, const int32_t __j) {
+  uint64_t __high0;                                               // 64
+  const uint64_t __low0 = __ryu_umul128(__m, __mul[0], &__high0); // 0
+  uint64_t __high1;                                               // 128
+  const uint64_t __low1 = __ryu_umul128(__m, __mul[1], &__high1); // 64
+  uint64_t __high2;                                               // 192
+  const uint64_t __low2 = __ryu_umul128(__m, __mul[2], &__high2); // 128
+  const uint64_t __s0low = __low0;                  // 0
+  (void) __s0low; // unused
+  const uint64_t __s0high = __low1 + __high0;       // 64
+  const uint32_t __c1 = __s0high < __low1;
+  const uint64_t __s1low = __low2 + __high1 + __c1; // 128
+  const uint32_t __c2 = __s1low < __low2; // __high1 + __c1 can't overflow, so compare against __low2
+  const uint64_t __s1high = __high2 + __c2;         // 192
+  _LIBCPP_ASSERT(__j >= 128, "");
+  _LIBCPP_ASSERT(__j <= 180, "");
+#ifdef _LIBCPP_INTRINSIC128
+  const uint32_t __dist = static_cast<uint32_t>(__j - 128); // __dist: [0, 52]
+  const uint64_t __shiftedhigh = __s1high >> __dist;
+  const uint64_t __shiftedlow = __ryu_shiftright128(__s1low, __s1high, __dist);
+  return __uint128_mod1e9(__shiftedhigh, __shiftedlow);
+#else // ^^^ intrinsics available ^^^ / vvv intrinsics unavailable vvv
+  if (__j < 160) { // __j: [128, 160)
+    const uint64_t __r0 = __mod1e9(__s1high);
+    const uint64_t __r1 = __mod1e9((__r0 << 32) | (__s1low >> 32));
+    const uint64_t __r2 = ((__r1 << 32) | (__s1low & 0xffffffff));
+    return __mod1e9(__r2 >> (__j - 128));
+  } else { // __j: [160, 192)
+    const uint64_t __r0 = __mod1e9(__s1high);
+    const uint64_t __r1 = ((__r0 << 32) | (__s1low >> 32));
+    return __mod1e9(__r1 >> (__j - 160));
+  }
+#endif // ^^^ intrinsics unavailable ^^^
+}
+
+void __append_n_digits(const uint32_t __olength, uint32_t __digits, char* const __result) {
+  uint32_t __i = 0;
+  while (__digits >= 10000) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+    const uint32_t __c = __digits - 10000 * (__digits / 10000);
+#else
+    const uint32_t __c = __digits % 10000;
+#endif
+    __digits /= 10000;
+    const uint32_t __c0 = (__c % 100) << 1;
+    const uint32_t __c1 = (__c / 100) << 1;
+    _VSTD::memcpy(__result + __olength - __i - 2, __DIGIT_TABLE + __c0, 2);
+    _VSTD::memcpy(__result + __olength - __i - 4, __DIGIT_TABLE + __c1, 2);
+    __i += 4;
+  }
+  if (__digits >= 100) {
+    const uint32_t __c = (__digits % 100) << 1;
+    __digits /= 100;
+    _VSTD::memcpy(__result + __olength - __i - 2, __DIGIT_TABLE + __c, 2);
+    __i += 2;
+  }
+  if (__digits >= 10) {
+    const uint32_t __c = __digits << 1;
+    _VSTD::memcpy(__result + __olength - __i - 2, __DIGIT_TABLE + __c, 2);
+  } else {
+    __result[0] = static_cast<char>('0' + __digits);
+  }
+}
+
+_LIBCPP_HIDE_FROM_ABI inline void __append_d_digits(const uint32_t __olength, uint32_t __digits, char* const __result) {
+  uint32_t __i = 0;
+  while (__digits >= 10000) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+    const uint32_t __c = __digits - 10000 * (__digits / 10000);
+#else
+    const uint32_t __c = __digits % 10000;
+#endif
+    __digits /= 10000;
+    const uint32_t __c0 = (__c % 100) << 1;
+    const uint32_t __c1 = (__c / 100) << 1;
+    _VSTD::memcpy(__result + __olength + 1 - __i - 2, __DIGIT_TABLE + __c0, 2);
+    _VSTD::memcpy(__result + __olength + 1 - __i - 4, __DIGIT_TABLE + __c1, 2);
+    __i += 4;
+  }
+  if (__digits >= 100) {
+    const uint32_t __c = (__digits % 100) << 1;
+    __digits /= 100;
+    _VSTD::memcpy(__result + __olength + 1 - __i - 2, __DIGIT_TABLE + __c, 2);
+    __i += 2;
+  }
+  if (__digits >= 10) {
+    const uint32_t __c = __digits << 1;
+    __result[2] = __DIGIT_TABLE[__c + 1];
+    __result[1] = '.';
+    __result[0] = __DIGIT_TABLE[__c];
+  } else {
+    __result[1] = '.';
+    __result[0] = static_cast<char>('0' + __digits);
+  }
+}
+
+_LIBCPP_HIDE_FROM_ABI inline void __append_c_digits(const uint32_t __count, uint32_t __digits, char* const __result) {
+  uint32_t __i = 0;
+  for (; __i < __count - 1; __i += 2) {
+    const uint32_t __c = (__digits % 100) << 1;
+    __digits /= 100;
+    _VSTD::memcpy(__result + __count - __i - 2, __DIGIT_TABLE + __c, 2);
+  }
+  if (__i < __count) {
+    const char __c = static_cast<char>('0' + (__digits % 10));
+    __result[__count - __i - 1] = __c;
+  }
+}
+
+void __append_nine_digits(uint32_t __digits, char* const __result) {
+  if (__digits == 0) {
+    _VSTD::memset(__result, '0', 9);
+    return;
+  }
+
+  for (uint32_t __i = 0; __i < 5; __i += 4) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+    const uint32_t __c = __digits - 10000 * (__digits / 10000);
+#else
+    const uint32_t __c = __digits % 10000;
+#endif
+    __digits /= 10000;
+    const uint32_t __c0 = (__c % 100) << 1;
+    const uint32_t __c1 = (__c / 100) << 1;
+    _VSTD::memcpy(__result + 7 - __i, __DIGIT_TABLE + __c0, 2);
+    _VSTD::memcpy(__result + 5 - __i, __DIGIT_TABLE + __c1, 2);
+  }
+  __result[0] = static_cast<char>('0' + __digits);
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __indexForExponent(const uint32_t __e) {
+  return (__e + 15) / 16;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __pow10BitsForIndex(const uint32_t __idx) {
+  return 16 * __idx + __POW10_ADDITIONAL_BITS;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __lengthForIndex(const uint32_t __idx) {
+  // +1 for ceil, +16 for mantissa, +8 to round up when dividing by 9
+  return (__log10Pow2(16 * static_cast<int32_t>(__idx)) + 1 + 16 + 8) / 9;
+}
+
+[[nodiscard]] to_chars_result __d2fixed_buffered_n(char* _First, char* const _Last, const double __d,
+  const uint32_t __precision) {
+  char* const _Original_first = _First;
+
+  const uint64_t __bits = __double_to_bits(__d);
+
+  // Case distinction; exit early for the easy cases.
+  if (__bits == 0) {
+    const int32_t _Total_zero_length = 1 // leading zero
+      + static_cast<int32_t>(__precision != 0) // possible decimal point
+      + static_cast<int32_t>(__precision); // zeroes after decimal point
+
+    if (_Last - _First < _Total_zero_length) {
+      return { _Last, errc::value_too_large };
+    }
+
+    *_First++ = '0';
+    if (__precision > 0) {
+      *_First++ = '.';
+      _VSTD::memset(_First, '0', __precision);
+      _First += __precision;
+    }
+    return { _First, errc{} };
+  }
+
+  // Decode __bits into mantissa and exponent.
+  const uint64_t __ieeeMantissa = __bits & ((1ull << __DOUBLE_MANTISSA_BITS) - 1);
+  const uint32_t __ieeeExponent = static_cast<uint32_t>(__bits >> __DOUBLE_MANTISSA_BITS);
+
+  int32_t __e2;
+  uint64_t __m2;
+  if (__ieeeExponent == 0) {
+    __e2 = 1 - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS;
+    __m2 = __ieeeMantissa;
+  } else {
+    __e2 = static_cast<int32_t>(__ieeeExponent) - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS;
+    __m2 = (1ull << __DOUBLE_MANTISSA_BITS) | __ieeeMantissa;
+  }
+
+  bool __nonzero = false;
+  if (__e2 >= -52) {
+    const uint32_t __idx = __e2 < 0 ? 0 : __indexForExponent(static_cast<uint32_t>(__e2));
+    const uint32_t __p10bits = __pow10BitsForIndex(__idx);
+    const int32_t __len = static_cast<int32_t>(__lengthForIndex(__idx));
+    for (int32_t __i = __len - 1; __i >= 0; --__i) {
+      const uint32_t __j = __p10bits - __e2;
+      // Temporary: __j is usually around 128, and by shifting a bit, we push it to 128 or above, which is
+      // a slightly faster code path in __mulShift_mod1e9. Instead, we can just increase the multipliers.
+      const uint32_t __digits = __mulShift_mod1e9(__m2 << 8, __POW10_SPLIT[__POW10_OFFSET[__idx] + __i],
+        static_cast<int32_t>(__j + 8));
+      if (__nonzero) {
+        if (_Last - _First < 9) {
+          return { _Last, errc::value_too_large };
+        }
+        __append_nine_digits(__digits, _First);
+        _First += 9;
+      } else if (__digits != 0) {
+        const uint32_t __olength = __decimalLength9(__digits);
+        if (_Last - _First < static_cast<ptrdiff_t>(__olength)) {
+          return { _Last, errc::value_too_large };
+        }
+        __append_n_digits(__olength, __digits, _First);
+        _First += __olength;
+        __nonzero = true;
+      }
+    }
+  }
+  if (!__nonzero) {
+    if (_First == _Last) {
+      return { _Last, errc::value_too_large };
+    }
+    *_First++ = '0';
+  }
+  if (__precision > 0) {
+    if (_First == _Last) {
+      return { _Last, errc::value_too_large };
+    }
+    *_First++ = '.';
+  }
+  if (__e2 < 0) {
+    const int32_t __idx = -__e2 / 16;
+    const uint32_t __blocks = __precision / 9 + 1;
+    // 0 = don't round up; 1 = round up unconditionally; 2 = round up if odd.
+    int __roundUp = 0;
+    uint32_t __i = 0;
+    if (__blocks <= __MIN_BLOCK_2[__idx]) {
+      __i = __blocks;
+      if (_Last - _First < static_cast<ptrdiff_t>(__precision)) {
+        return { _Last, errc::value_too_large };
+      }
+      _VSTD::memset(_First, '0', __precision);
+      _First += __precision;
+    } else if (__i < __MIN_BLOCK_2[__idx]) {
+      __i = __MIN_BLOCK_2[__idx];
+      if (_Last - _First < static_cast<ptrdiff_t>(9 * __i)) {
+        return { _Last, errc::value_too_large };
+      }
+      _VSTD::memset(_First, '0', 9 * __i);
+      _First += 9 * __i;
+    }
+    for (; __i < __blocks; ++__i) {
+      const int32_t __j = __ADDITIONAL_BITS_2 + (-__e2 - 16 * __idx);
+      const uint32_t __p = __POW10_OFFSET_2[__idx] + __i - __MIN_BLOCK_2[__idx];
+      if (__p >= __POW10_OFFSET_2[__idx + 1]) {
+        // If the remaining digits are all 0, then we might as well use memset.
+        // No rounding required in this case.
+        const uint32_t __fill = __precision - 9 * __i;
+        if (_Last - _First < static_cast<ptrdiff_t>(__fill)) {
+          return { _Last, errc::value_too_large };
+        }
+        _VSTD::memset(_First, '0', __fill);
+        _First += __fill;
+        break;
+      }
+      // Temporary: __j is usually around 128, and by shifting a bit, we push it to 128 or above, which is
+      // a slightly faster code path in __mulShift_mod1e9. Instead, we can just increase the multipliers.
+      uint32_t __digits = __mulShift_mod1e9(__m2 << 8, __POW10_SPLIT_2[__p], __j + 8);
+      if (__i < __blocks - 1) {
+        if (_Last - _First < 9) {
+          return { _Last, errc::value_too_large };
+        }
+        __append_nine_digits(__digits, _First);
+        _First += 9;
+      } else {
+        const uint32_t __maximum = __precision - 9 * __i;
+        uint32_t __lastDigit = 0;
+        for (uint32_t __k = 0; __k < 9 - __maximum; ++__k) {
+          __lastDigit = __digits % 10;
+          __digits /= 10;
+        }
+        if (__lastDigit != 5) {
+          __roundUp = __lastDigit > 5;
+        } else {
+          // Is m * 10^(additionalDigits + 1) / 2^(-__e2) integer?
+          const int32_t __requiredTwos = -__e2 - static_cast<int32_t>(__precision) - 1;
+          const bool __trailingZeros = __requiredTwos <= 0
+            || (__requiredTwos < 60 && __multipleOfPowerOf2(__m2, static_cast<uint32_t>(__requiredTwos)));
+          __roundUp = __trailingZeros ? 2 : 1;
+        }
+        if (__maximum > 0) {
+          if (_Last - _First < static_cast<ptrdiff_t>(__maximum)) {
+            return { _Last, errc::value_too_large };
+          }
+          __append_c_digits(__maximum, __digits, _First);
+          _First += __maximum;
+        }
+        break;
+      }
+    }
+    if (__roundUp != 0) {
+      char* _Round = _First;
+      char* _Dot = _Last;
+      while (true) {
+        if (_Round == _Original_first) {
+          _Round[0] = '1';
+          if (_Dot != _Last) {
+            _Dot[0] = '0';
+            _Dot[1] = '.';
+          }
+          if (_First == _Last) {
+            return { _Last, errc::value_too_large };
+          }
+          *_First++ = '0';
+          break;
+        }
+        --_Round;
+        const char __c = _Round[0];
+        if (__c == '.') {
+          _Dot = _Round;
+        } else if (__c == '9') {
+          _Round[0] = '0';
+          __roundUp = 1;
+        } else {
+          if (__roundUp == 1 || __c % 2 != 0) {
+            _Round[0] = __c + 1;
+          }
+          break;
+        }
+      }
+    }
+  } else {
+    if (_Last - _First < static_cast<ptrdiff_t>(__precision)) {
+      return { _Last, errc::value_too_large };
+    }
+    _VSTD::memset(_First, '0', __precision);
+    _First += __precision;
+  }
+  return { _First, errc{} };
+}
+
+[[nodiscard]] to_chars_result __d2exp_buffered_n(char* _First, char* const _Last, const double __d,
+  uint32_t __precision) {
+  char* const _Original_first = _First;
+
+  const uint64_t __bits = __double_to_bits(__d);
+
+  // Case distinction; exit early for the easy cases.
+  if (__bits == 0) {
+    const int32_t _Total_zero_length = 1 // leading zero
+      + static_cast<int32_t>(__precision != 0) // possible decimal point
+      + static_cast<int32_t>(__precision) // zeroes after decimal point
+      + 4; // "e+00"
+    if (_Last - _First < _Total_zero_length) {
+      return { _Last, errc::value_too_large };
+    }
+    *_First++ = '0';
+    if (__precision > 0) {
+      *_First++ = '.';
+      _VSTD::memset(_First, '0', __precision);
+      _First += __precision;
+    }
+    _VSTD::memcpy(_First, "e+00", 4);
+    _First += 4;
+    return { _First, errc{} };
+  }
+
+  // Decode __bits into mantissa and exponent.
+  const uint64_t __ieeeMantissa = __bits & ((1ull << __DOUBLE_MANTISSA_BITS) - 1);
+  const uint32_t __ieeeExponent = static_cast<uint32_t>(__bits >> __DOUBLE_MANTISSA_BITS);
+
+  int32_t __e2;
+  uint64_t __m2;
+  if (__ieeeExponent == 0) {
+    __e2 = 1 - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS;
+    __m2 = __ieeeMantissa;
+  } else {
+    __e2 = static_cast<int32_t>(__ieeeExponent) - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS;
+    __m2 = (1ull << __DOUBLE_MANTISSA_BITS) | __ieeeMantissa;
+  }
+
+  const bool __printDecimalPoint = __precision > 0;
+  ++__precision;
+  uint32_t __digits = 0;
+  uint32_t __printedDigits = 0;
+  uint32_t __availableDigits = 0;
+  int32_t __exp = 0;
+  if (__e2 >= -52) {
+    const uint32_t __idx = __e2 < 0 ? 0 : __indexForExponent(static_cast<uint32_t>(__e2));
+    const uint32_t __p10bits = __pow10BitsForIndex(__idx);
+    const int32_t __len = static_cast<int32_t>(__lengthForIndex(__idx));
+    for (int32_t __i = __len - 1; __i >= 0; --__i) {
+      const uint32_t __j = __p10bits - __e2;
+      // Temporary: __j is usually around 128, and by shifting a bit, we push it to 128 or above, which is
+      // a slightly faster code path in __mulShift_mod1e9. Instead, we can just increase the multipliers.
+      __digits = __mulShift_mod1e9(__m2 << 8, __POW10_SPLIT[__POW10_OFFSET[__idx] + __i],
+        static_cast<int32_t>(__j + 8));
+      if (__printedDigits != 0) {
+        if (__printedDigits + 9 > __precision) {
+          __availableDigits = 9;
+          break;
+        }
+        if (_Last - _First < 9) {
+          return { _Last, errc::value_too_large };
+        }
+        __append_nine_digits(__digits, _First);
+        _First += 9;
+        __printedDigits += 9;
+      } else if (__digits != 0) {
+        __availableDigits = __decimalLength9(__digits);
+        __exp = __i * 9 + static_cast<int32_t>(__availableDigits) - 1;
+        if (__availableDigits > __precision) {
+          break;
+        }
+        if (__printDecimalPoint) {
+          if (_Last - _First < static_cast<ptrdiff_t>(__availableDigits + 1)) {
+            return { _Last, errc::value_too_large };
+          }
+          __append_d_digits(__availableDigits, __digits, _First);
+          _First += __availableDigits + 1; // +1 for decimal point
+        } else {
+          if (_First == _Last) {
+            return { _Last, errc::value_too_large };
+          }
+          *_First++ = static_cast<char>('0' + __digits);
+        }
+        __printedDigits = __availableDigits;
+        __availableDigits = 0;
+      }
+    }
+  }
+
+  if (__e2 < 0 && __availableDigits == 0) {
+    const int32_t __idx = -__e2 / 16;
+    for (int32_t __i = __MIN_BLOCK_2[__idx]; __i < 200; ++__i) {
+      const int32_t __j = __ADDITIONAL_BITS_2 + (-__e2 - 16 * __idx);
+      const uint32_t __p = __POW10_OFFSET_2[__idx] + static_cast<uint32_t>(__i) - __MIN_BLOCK_2[__idx];
+      // Temporary: __j is usually around 128, and by shifting a bit, we push it to 128 or above, which is
+      // a slightly faster code path in __mulShift_mod1e9. Instead, we can just increase the multipliers.
+      __digits = (__p >= __POW10_OFFSET_2[__idx + 1]) ? 0 : __mulShift_mod1e9(__m2 << 8, __POW10_SPLIT_2[__p], __j + 8);
+      if (__printedDigits != 0) {
+        if (__printedDigits + 9 > __precision) {
+          __availableDigits = 9;
+          break;
+        }
+        if (_Last - _First < 9) {
+          return { _Last, errc::value_too_large };
+        }
+        __append_nine_digits(__digits, _First);
+        _First += 9;
+        __printedDigits += 9;
+      } else if (__digits != 0) {
+        __availableDigits = __decimalLength9(__digits);
+        __exp = -(__i + 1) * 9 + static_cast<int32_t>(__availableDigits) - 1;
+        if (__availableDigits > __precision) {
+          break;
+        }
+        if (__printDecimalPoint) {
+          if (_Last - _First < static_cast<ptrdiff_t>(__availableDigits + 1)) {
+            return { _Last, errc::value_too_large };
+          }
+          __append_d_digits(__availableDigits, __digits, _First);
+          _First += __availableDigits + 1; // +1 for decimal point
+        } else {
+          if (_First == _Last) {
+            return { _Last, errc::value_too_large };
+          }
+          *_First++ = static_cast<char>('0' + __digits);
+        }
+        __printedDigits = __availableDigits;
+        __availableDigits = 0;
+      }
+    }
+  }
+
+  const uint32_t __maximum = __precision - __printedDigits;
+  if (__availableDigits == 0) {
+    __digits = 0;
+  }
+  uint32_t __lastDigit = 0;
+  if (__availableDigits > __maximum) {
+    for (uint32_t __k = 0; __k < __availableDigits - __maximum; ++__k) {
+      __lastDigit = __digits % 10;
+      __digits /= 10;
+    }
+  }
+  // 0 = don't round up; 1 = round up unconditionally; 2 = round up if odd.
+  int __roundUp = 0;
+  if (__lastDigit != 5) {
+    __roundUp = __lastDigit > 5;
+  } else {
+    // Is m * 2^__e2 * 10^(__precision + 1 - __exp) integer?
+    // __precision was already increased by 1, so we don't need to write + 1 here.
+    const int32_t __rexp = static_cast<int32_t>(__precision) - __exp;
+    const int32_t __requiredTwos = -__e2 - __rexp;
+    bool __trailingZeros = __requiredTwos <= 0
+      || (__requiredTwos < 60 && __multipleOfPowerOf2(__m2, static_cast<uint32_t>(__requiredTwos)));
+    if (__rexp < 0) {
+      const int32_t __requiredFives = -__rexp;
+      __trailingZeros = __trailingZeros && __multipleOfPowerOf5(__m2, static_cast<uint32_t>(__requiredFives));
+    }
+    __roundUp = __trailingZeros ? 2 : 1;
+  }
+  if (__printedDigits != 0) {
+    if (_Last - _First < static_cast<ptrdiff_t>(__maximum)) {
+      return { _Last, errc::value_too_large };
+    }
+    if (__digits == 0) {
+      _VSTD::memset(_First, '0', __maximum);
+    } else {
+      __append_c_digits(__maximum, __digits, _First);
+    }
+    _First += __maximum;
+  } else {
+    if (__printDecimalPoint) {
+      if (_Last - _First < static_cast<ptrdiff_t>(__maximum + 1)) {
+        return { _Last, errc::value_too_large };
+      }
+      __append_d_digits(__maximum, __digits, _First);
+      _First += __maximum + 1; // +1 for decimal point
+    } else {
+      if (_First == _Last) {
+        return { _Last, errc::value_too_large };
+      }
+      *_First++ = static_cast<char>('0' + __digits);
+    }
+  }
+  if (__roundUp != 0) {
+    char* _Round = _First;
+    while (true) {
+      if (_Round == _Original_first) {
+        _Round[0] = '1';
+        ++__exp;
+        break;
+      }
+      --_Round;
+      const char __c = _Round[0];
+      if (__c == '.') {
+        // Keep going.
+      } else if (__c == '9') {
+        _Round[0] = '0';
+        __roundUp = 1;
+      } else {
+        if (__roundUp == 1 || __c % 2 != 0) {
+          _Round[0] = __c + 1;
+        }
+        break;
+      }
+    }
+  }
+
+  char _Sign_character;
+
+  if (__exp < 0) {
+    _Sign_character = '-';
+    __exp = -__exp;
+  } else {
+    _Sign_character = '+';
+  }
+
+  const int _Exponent_part_length = __exp >= 100
+    ? 5 // "e+NNN"
+    : 4; // "e+NN"
+
+  if (_Last - _First < _Exponent_part_length) {
+    return { _Last, errc::value_too_large };
+  }
+
+  *_First++ = 'e';
+  *_First++ = _Sign_character;
+
+  if (__exp >= 100) {
+    const int32_t __c = __exp % 10;
+    _VSTD::memcpy(_First, __DIGIT_TABLE + 2 * (__exp / 10), 2);
+    _First[2] = static_cast<char>('0' + __c);
+    _First += 3;
+  } else {
+    _VSTD::memcpy(_First, __DIGIT_TABLE + 2 * __exp, 2);
+    _First += 2;
+  }
+
+  return { _First, errc{} };
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
diff --git a/app/src/main/cpp/libcxx/src/ryu/d2s.cpp b/app/src/main/cpp/libcxx/src/ryu/d2s.cpp
new file mode 100644
index 0000000..245c2eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/ryu/d2s.cpp
@@ -0,0 +1,783 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__assert>
+#include <__config>
+#include <charconv>
+
+#include "include/ryu/common.h"
+#include "include/ryu/d2fixed.h"
+#include "include/ryu/d2s.h"
+#include "include/ryu/d2s_full_table.h"
+#include "include/ryu/d2s_intrinsics.h"
+#include "include/ryu/digit_table.h"
+#include "include/ryu/ryu.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// We need a 64x128-bit multiplication and a subsequent 128-bit shift.
+// Multiplication:
+//   The 64-bit factor is variable and passed in, the 128-bit factor comes
+//   from a lookup table. We know that the 64-bit factor only has 55
+//   significant bits (i.e., the 9 topmost bits are zeros). The 128-bit
+//   factor only has 124 significant bits (i.e., the 4 topmost bits are
+//   zeros).
+// Shift:
+//   In principle, the multiplication result requires 55 + 124 = 179 bits to
+//   represent. However, we then shift this value to the right by __j, which is
+//   at least __j >= 115, so the result is guaranteed to fit into 179 - 115 = 64
+//   bits. This means that we only need the topmost 64 significant bits of
+//   the 64x128-bit multiplication.
+//
+// There are several ways to do this:
+// 1. Best case: the compiler exposes a 128-bit type.
+//    We perform two 64x64-bit multiplications, add the higher 64 bits of the
+//    lower result to the higher result, and shift by __j - 64 bits.
+//
+//    We explicitly cast from 64-bit to 128-bit, so the compiler can tell
+//    that these are only 64-bit inputs, and can map these to the best
+//    possible sequence of assembly instructions.
+//    x64 machines happen to have matching assembly instructions for
+//    64x64-bit multiplications and 128-bit shifts.
+//
+// 2. Second best case: the compiler exposes intrinsics for the x64 assembly
+//    instructions mentioned in 1.
+//
+// 3. We only have 64x64 bit instructions that return the lower 64 bits of
+//    the result, i.e., we have to use plain C.
+//    Our inputs are less than the full width, so we have three options:
+//    a. Ignore this fact and just implement the intrinsics manually.
+//    b. Split both into 31-bit pieces, which guarantees no internal overflow,
+//       but requires extra work upfront (unless we change the lookup table).
+//    c. Split only the first factor into 31-bit pieces, which also guarantees
+//       no internal overflow, but requires extra work since the intermediate
+//       results are not perfectly aligned.
+#ifdef _LIBCPP_INTRINSIC128
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __mulShift(const uint64_t __m, const uint64_t* const __mul, const int32_t __j) {
+  // __m is maximum 55 bits
+  uint64_t __high1;                                               // 128
+  const uint64_t __low1 = __ryu_umul128(__m, __mul[1], &__high1); // 64
+  uint64_t __high0;                                               // 64
+  (void) __ryu_umul128(__m, __mul[0], &__high0);                  // 0
+  const uint64_t __sum = __high0 + __low1;
+  if (__sum < __high0) {
+    ++__high1; // overflow into __high1
+  }
+  return __ryu_shiftright128(__sum, __high1, static_cast<uint32_t>(__j - 64));
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint64_t __mulShiftAll(const uint64_t __m, const uint64_t* const __mul, const int32_t __j,
+  uint64_t* const __vp, uint64_t* const __vm, const uint32_t __mmShift) {
+  *__vp = __mulShift(4 * __m + 2, __mul, __j);
+  *__vm = __mulShift(4 * __m - 1 - __mmShift, __mul, __j);
+  return __mulShift(4 * __m, __mul, __j);
+}
+
+#else // ^^^ intrinsics available ^^^ / vvv intrinsics unavailable vvv
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline _LIBCPP_ALWAYS_INLINE uint64_t __mulShiftAll(uint64_t __m, const uint64_t* const __mul, const int32_t __j,
+  uint64_t* const __vp, uint64_t* const __vm, const uint32_t __mmShift) { // TRANSITION, VSO-634761
+  __m <<= 1;
+  // __m is maximum 55 bits
+  uint64_t __tmp;
+  const uint64_t __lo = __ryu_umul128(__m, __mul[0], &__tmp);
+  uint64_t __hi;
+  const uint64_t __mid = __tmp + __ryu_umul128(__m, __mul[1], &__hi);
+  __hi += __mid < __tmp; // overflow into __hi
+
+  const uint64_t __lo2 = __lo + __mul[0];
+  const uint64_t __mid2 = __mid + __mul[1] + (__lo2 < __lo);
+  const uint64_t __hi2 = __hi + (__mid2 < __mid);
+  *__vp = __ryu_shiftright128(__mid2, __hi2, static_cast<uint32_t>(__j - 64 - 1));
+
+  if (__mmShift == 1) {
+    const uint64_t __lo3 = __lo - __mul[0];
+    const uint64_t __mid3 = __mid - __mul[1] - (__lo3 > __lo);
+    const uint64_t __hi3 = __hi - (__mid3 > __mid);
+    *__vm = __ryu_shiftright128(__mid3, __hi3, static_cast<uint32_t>(__j - 64 - 1));
+  } else {
+    const uint64_t __lo3 = __lo + __lo;
+    const uint64_t __mid3 = __mid + __mid + (__lo3 < __lo);
+    const uint64_t __hi3 = __hi + __hi + (__mid3 < __mid);
+    const uint64_t __lo4 = __lo3 - __mul[0];
+    const uint64_t __mid4 = __mid3 - __mul[1] - (__lo4 > __lo3);
+    const uint64_t __hi4 = __hi3 - (__mid4 > __mid3);
+    *__vm = __ryu_shiftright128(__mid4, __hi4, static_cast<uint32_t>(__j - 64));
+  }
+
+  return __ryu_shiftright128(__mid, __hi, static_cast<uint32_t>(__j - 64 - 1));
+}
+
+#endif // ^^^ intrinsics unavailable ^^^
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __decimalLength17(const uint64_t __v) {
+  // This is slightly faster than a loop.
+  // The average output length is 16.38 digits, so we check high-to-low.
+  // Function precondition: __v is not an 18, 19, or 20-digit number.
+  // (17 digits are sufficient for round-tripping.)
+  _LIBCPP_ASSERT(__v < 100000000000000000u, "");
+  if (__v >= 10000000000000000u) { return 17; }
+  if (__v >= 1000000000000000u) { return 16; }
+  if (__v >= 100000000000000u) { return 15; }
+  if (__v >= 10000000000000u) { return 14; }
+  if (__v >= 1000000000000u) { return 13; }
+  if (__v >= 100000000000u) { return 12; }
+  if (__v >= 10000000000u) { return 11; }
+  if (__v >= 1000000000u) { return 10; }
+  if (__v >= 100000000u) { return 9; }
+  if (__v >= 10000000u) { return 8; }
+  if (__v >= 1000000u) { return 7; }
+  if (__v >= 100000u) { return 6; }
+  if (__v >= 10000u) { return 5; }
+  if (__v >= 1000u) { return 4; }
+  if (__v >= 100u) { return 3; }
+  if (__v >= 10u) { return 2; }
+  return 1;
+}
+
+// A floating decimal representing m * 10^e.
+struct __floating_decimal_64 {
+  uint64_t __mantissa;
+  int32_t __exponent;
+};
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline __floating_decimal_64 __d2d(const uint64_t __ieeeMantissa, const uint32_t __ieeeExponent) {
+  int32_t __e2;
+  uint64_t __m2;
+  if (__ieeeExponent == 0) {
+    // We subtract 2 so that the bounds computation has 2 additional bits.
+    __e2 = 1 - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS - 2;
+    __m2 = __ieeeMantissa;
+  } else {
+    __e2 = static_cast<int32_t>(__ieeeExponent) - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS - 2;
+    __m2 = (1ull << __DOUBLE_MANTISSA_BITS) | __ieeeMantissa;
+  }
+  const bool __even = (__m2 & 1) == 0;
+  const bool __acceptBounds = __even;
+
+  // Step 2: Determine the interval of valid decimal representations.
+  const uint64_t __mv = 4 * __m2;
+  // Implicit bool -> int conversion. True is 1, false is 0.
+  const uint32_t __mmShift = __ieeeMantissa != 0 || __ieeeExponent <= 1;
+  // We would compute __mp and __mm like this:
+  // uint64_t __mp = 4 * __m2 + 2;
+  // uint64_t __mm = __mv - 1 - __mmShift;
+
+  // Step 3: Convert to a decimal power base using 128-bit arithmetic.
+  uint64_t __vr, __vp, __vm;
+  int32_t __e10;
+  bool __vmIsTrailingZeros = false;
+  bool __vrIsTrailingZeros = false;
+  if (__e2 >= 0) {
+    // I tried special-casing __q == 0, but there was no effect on performance.
+    // This expression is slightly faster than max(0, __log10Pow2(__e2) - 1).
+    const uint32_t __q = __log10Pow2(__e2) - (__e2 > 3);
+    __e10 = static_cast<int32_t>(__q);
+    const int32_t __k = __DOUBLE_POW5_INV_BITCOUNT + __pow5bits(static_cast<int32_t>(__q)) - 1;
+    const int32_t __i = -__e2 + static_cast<int32_t>(__q) + __k;
+    __vr = __mulShiftAll(__m2, __DOUBLE_POW5_INV_SPLIT[__q], __i, &__vp, &__vm, __mmShift);
+    if (__q <= 21) {
+      // This should use __q <= 22, but I think 21 is also safe. Smaller values
+      // may still be safe, but it's more difficult to reason about them.
+      // Only one of __mp, __mv, and __mm can be a multiple of 5, if any.
+      const uint32_t __mvMod5 = static_cast<uint32_t>(__mv) - 5 * static_cast<uint32_t>(__div5(__mv));
+      if (__mvMod5 == 0) {
+        __vrIsTrailingZeros = __multipleOfPowerOf5(__mv, __q);
+      } else if (__acceptBounds) {
+        // Same as min(__e2 + (~__mm & 1), __pow5Factor(__mm)) >= __q
+        // <=> __e2 + (~__mm & 1) >= __q && __pow5Factor(__mm) >= __q
+        // <=> true && __pow5Factor(__mm) >= __q, since __e2 >= __q.
+        __vmIsTrailingZeros = __multipleOfPowerOf5(__mv - 1 - __mmShift, __q);
+      } else {
+        // Same as min(__e2 + 1, __pow5Factor(__mp)) >= __q.
+        __vp -= __multipleOfPowerOf5(__mv + 2, __q);
+      }
+    }
+  } else {
+    // This expression is slightly faster than max(0, __log10Pow5(-__e2) - 1).
+    const uint32_t __q = __log10Pow5(-__e2) - (-__e2 > 1);
+    __e10 = static_cast<int32_t>(__q) + __e2;
+    const int32_t __i = -__e2 - static_cast<int32_t>(__q);
+    const int32_t __k = __pow5bits(__i) - __DOUBLE_POW5_BITCOUNT;
+    const int32_t __j = static_cast<int32_t>(__q) - __k;
+    __vr = __mulShiftAll(__m2, __DOUBLE_POW5_SPLIT[__i], __j, &__vp, &__vm, __mmShift);
+    if (__q <= 1) {
+      // {__vr,__vp,__vm} is trailing zeros if {__mv,__mp,__mm} has at least __q trailing 0 bits.
+      // __mv = 4 * __m2, so it always has at least two trailing 0 bits.
+      __vrIsTrailingZeros = true;
+      if (__acceptBounds) {
+        // __mm = __mv - 1 - __mmShift, so it has 1 trailing 0 bit iff __mmShift == 1.
+        __vmIsTrailingZeros = __mmShift == 1;
+      } else {
+        // __mp = __mv + 2, so it always has at least one trailing 0 bit.
+        --__vp;
+      }
+    } else if (__q < 63) { // TRANSITION(ulfjack): Use a tighter bound here.
+      // We need to compute min(ntz(__mv), __pow5Factor(__mv) - __e2) >= __q - 1
+      // <=> ntz(__mv) >= __q - 1 && __pow5Factor(__mv) - __e2 >= __q - 1
+      // <=> ntz(__mv) >= __q - 1 (__e2 is negative and -__e2 >= __q)
+      // <=> (__mv & ((1 << (__q - 1)) - 1)) == 0
+      // We also need to make sure that the left shift does not overflow.
+      __vrIsTrailingZeros = __multipleOfPowerOf2(__mv, __q - 1);
+    }
+  }
+
+  // Step 4: Find the shortest decimal representation in the interval of valid representations.
+  int32_t __removed = 0;
+  uint8_t __lastRemovedDigit = 0;
+  uint64_t _Output;
+  // On average, we remove ~2 digits.
+  if (__vmIsTrailingZeros || __vrIsTrailingZeros) {
+    // General case, which happens rarely (~0.7%).
+    for (;;) {
+      const uint64_t __vpDiv10 = __div10(__vp);
+      const uint64_t __vmDiv10 = __div10(__vm);
+      if (__vpDiv10 <= __vmDiv10) {
+        break;
+      }
+      const uint32_t __vmMod10 = static_cast<uint32_t>(__vm) - 10 * static_cast<uint32_t>(__vmDiv10);
+      const uint64_t __vrDiv10 = __div10(__vr);
+      const uint32_t __vrMod10 = static_cast<uint32_t>(__vr) - 10 * static_cast<uint32_t>(__vrDiv10);
+      __vmIsTrailingZeros &= __vmMod10 == 0;
+      __vrIsTrailingZeros &= __lastRemovedDigit == 0;
+      __lastRemovedDigit = static_cast<uint8_t>(__vrMod10);
+      __vr = __vrDiv10;
+      __vp = __vpDiv10;
+      __vm = __vmDiv10;
+      ++__removed;
+    }
+    if (__vmIsTrailingZeros) {
+      for (;;) {
+        const uint64_t __vmDiv10 = __div10(__vm);
+        const uint32_t __vmMod10 = static_cast<uint32_t>(__vm) - 10 * static_cast<uint32_t>(__vmDiv10);
+        if (__vmMod10 != 0) {
+          break;
+        }
+        const uint64_t __vpDiv10 = __div10(__vp);
+        const uint64_t __vrDiv10 = __div10(__vr);
+        const uint32_t __vrMod10 = static_cast<uint32_t>(__vr) - 10 * static_cast<uint32_t>(__vrDiv10);
+        __vrIsTrailingZeros &= __lastRemovedDigit == 0;
+        __lastRemovedDigit = static_cast<uint8_t>(__vrMod10);
+        __vr = __vrDiv10;
+        __vp = __vpDiv10;
+        __vm = __vmDiv10;
+        ++__removed;
+      }
+    }
+    if (__vrIsTrailingZeros && __lastRemovedDigit == 5 && __vr % 2 == 0) {
+      // Round even if the exact number is .....50..0.
+      __lastRemovedDigit = 4;
+    }
+    // We need to take __vr + 1 if __vr is outside bounds or we need to round up.
+    _Output = __vr + ((__vr == __vm && (!__acceptBounds || !__vmIsTrailingZeros)) || __lastRemovedDigit >= 5);
+  } else {
+    // Specialized for the common case (~99.3%). Percentages below are relative to this.
+    bool __roundUp = false;
+    const uint64_t __vpDiv100 = __div100(__vp);
+    const uint64_t __vmDiv100 = __div100(__vm);
+    if (__vpDiv100 > __vmDiv100) { // Optimization: remove two digits at a time (~86.2%).
+      const uint64_t __vrDiv100 = __div100(__vr);
+      const uint32_t __vrMod100 = static_cast<uint32_t>(__vr) - 100 * static_cast<uint32_t>(__vrDiv100);
+      __roundUp = __vrMod100 >= 50;
+      __vr = __vrDiv100;
+      __vp = __vpDiv100;
+      __vm = __vmDiv100;
+      __removed += 2;
+    }
+    // Loop iterations below (approximately), without optimization above:
+    // 0: 0.03%, 1: 13.8%, 2: 70.6%, 3: 14.0%, 4: 1.40%, 5: 0.14%, 6+: 0.02%
+    // Loop iterations below (approximately), with optimization above:
+    // 0: 70.6%, 1: 27.8%, 2: 1.40%, 3: 0.14%, 4+: 0.02%
+    for (;;) {
+      const uint64_t __vpDiv10 = __div10(__vp);
+      const uint64_t __vmDiv10 = __div10(__vm);
+      if (__vpDiv10 <= __vmDiv10) {
+        break;
+      }
+      const uint64_t __vrDiv10 = __div10(__vr);
+      const uint32_t __vrMod10 = static_cast<uint32_t>(__vr) - 10 * static_cast<uint32_t>(__vrDiv10);
+      __roundUp = __vrMod10 >= 5;
+      __vr = __vrDiv10;
+      __vp = __vpDiv10;
+      __vm = __vmDiv10;
+      ++__removed;
+    }
+    // We need to take __vr + 1 if __vr is outside bounds or we need to round up.
+    _Output = __vr + (__vr == __vm || __roundUp);
+  }
+  const int32_t __exp = __e10 + __removed;
+
+  __floating_decimal_64 __fd;
+  __fd.__exponent = __exp;
+  __fd.__mantissa = _Output;
+  return __fd;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline to_chars_result __to_chars(char* const _First, char* const _Last, const __floating_decimal_64 __v,
+  chars_format _Fmt, const double __f) {
+  // Step 5: Print the decimal representation.
+  uint64_t _Output = __v.__mantissa;
+  int32_t _Ryu_exponent = __v.__exponent;
+  const uint32_t __olength = __decimalLength17(_Output);
+  int32_t _Scientific_exponent = _Ryu_exponent + static_cast<int32_t>(__olength) - 1;
+
+  if (_Fmt == chars_format{}) {
+    int32_t _Lower;
+    int32_t _Upper;
+
+    if (__olength == 1) {
+      // Value | Fixed   | Scientific
+      // 1e-3  | "0.001" | "1e-03"
+      // 1e4   | "10000" | "1e+04"
+      _Lower = -3;
+      _Upper = 4;
+    } else {
+      // Value   | Fixed       | Scientific
+      // 1234e-7 | "0.0001234" | "1.234e-04"
+      // 1234e5  | "123400000" | "1.234e+08"
+      _Lower = -static_cast<int32_t>(__olength + 3);
+      _Upper = 5;
+    }
+
+    if (_Lower <= _Ryu_exponent && _Ryu_exponent <= _Upper) {
+      _Fmt = chars_format::fixed;
+    } else {
+      _Fmt = chars_format::scientific;
+    }
+  } else if (_Fmt == chars_format::general) {
+    // C11 7.21.6.1 "The fprintf function"/8:
+    // "Let P equal [...] 6 if the precision is omitted [...].
+    // Then, if a conversion with style E would have an exponent of X:
+    // - if P > X >= -4, the conversion is with style f [...].
+    // - otherwise, the conversion is with style e [...]."
+    if (-4 <= _Scientific_exponent && _Scientific_exponent < 6) {
+      _Fmt = chars_format::fixed;
+    } else {
+      _Fmt = chars_format::scientific;
+    }
+  }
+
+  if (_Fmt == chars_format::fixed) {
+    // Example: _Output == 1729, __olength == 4
+
+    // _Ryu_exponent | Printed  | _Whole_digits | _Total_fixed_length  | Notes
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //             2 | 172900   |  6            | _Whole_digits        | Ryu can't be used for printing
+    //             1 | 17290    |  5            | (sometimes adjusted) | when the trimmed digits are nonzero.
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //             0 | 1729     |  4            | _Whole_digits        | Unified length cases.
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //            -1 | 172.9    |  3            | __olength + 1        | This case can't happen for
+    //            -2 | 17.29    |  2            |                      | __olength == 1, but no additional
+    //            -3 | 1.729    |  1            |                      | code is needed to avoid it.
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //            -4 | 0.1729   |  0            | 2 - _Ryu_exponent    | C11 7.21.6.1 "The fprintf function"/8:
+    //            -5 | 0.01729  | -1            |                      | "If a decimal-point character appears,
+    //            -6 | 0.001729 | -2            |                      | at least one digit appears before it."
+
+    const int32_t _Whole_digits = static_cast<int32_t>(__olength) + _Ryu_exponent;
+
+    uint32_t _Total_fixed_length;
+    if (_Ryu_exponent >= 0) { // cases "172900" and "1729"
+      _Total_fixed_length = static_cast<uint32_t>(_Whole_digits);
+      if (_Output == 1) {
+        // Rounding can affect the number of digits.
+        // For example, 1e23 is exactly "99999999999999991611392" which is 23 digits instead of 24.
+        // We can use a lookup table to detect this and adjust the total length.
+        static constexpr uint8_t _Adjustment[309] = {
+          0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,1,1,0,1,0,1,1,1,0,1,1,1,0,0,0,0,0,
+          1,1,0,0,1,0,1,1,1,0,0,0,0,1,1,1,1,0,0,0,1,1,1,1,0,0,0,1,1,1,1,0,1,0,1,0,1,1,0,0,0,0,1,1,1,
+          1,0,0,0,0,0,0,0,1,1,0,1,1,0,0,1,0,1,0,1,0,1,1,0,0,0,0,0,1,1,1,0,0,1,1,1,1,1,0,1,0,1,1,0,1,
+          1,0,0,0,0,0,0,0,0,0,1,1,1,0,0,1,0,0,1,0,0,1,1,1,1,0,0,1,1,0,1,1,0,1,1,0,1,0,0,0,1,0,0,0,1,
+          0,1,0,1,0,1,1,1,0,0,0,0,0,0,1,1,1,1,0,0,1,0,1,1,1,0,0,0,1,0,1,1,1,1,1,1,0,1,0,1,1,0,0,0,1,
+          1,1,0,1,1,0,0,0,1,0,0,0,1,0,1,0,0,0,0,0,0,0,1,0,1,1,0,0,1,1,1,0,0,0,1,0,1,0,0,0,0,0,1,1,0,
+          0,1,0,1,1,1,0,0,1,0,0,0,0,1,0,1,0,0,0,0,0,1,0,1,0,1,1,0,1,0,0,0,0,0,1,1,0,1,0 };
+        _Total_fixed_length -= _Adjustment[_Ryu_exponent];
+        // _Whole_digits doesn't need to be adjusted because these cases won't refer to it later.
+      }
+    } else if (_Whole_digits > 0) { // case "17.29"
+      _Total_fixed_length = __olength + 1;
+    } else { // case "0.001729"
+      _Total_fixed_length = static_cast<uint32_t>(2 - _Ryu_exponent);
+    }
+
+    if (_Last - _First < static_cast<ptrdiff_t>(_Total_fixed_length)) {
+      return { _Last, errc::value_too_large };
+    }
+
+    char* _Mid;
+    if (_Ryu_exponent > 0) { // case "172900"
+      bool _Can_use_ryu;
+
+      if (_Ryu_exponent > 22) { // 10^22 is the largest power of 10 that's exactly representable as a double.
+        _Can_use_ryu = false;
+      } else {
+        // Ryu generated X: __v.__mantissa * 10^_Ryu_exponent
+        // __v.__mantissa == 2^_Trailing_zero_bits * (__v.__mantissa >> _Trailing_zero_bits)
+        // 10^_Ryu_exponent == 2^_Ryu_exponent * 5^_Ryu_exponent
+
+        // _Trailing_zero_bits is [0, 56] (aside: because 2^56 is the largest power of 2
+        // with 17 decimal digits, which is double's round-trip limit.)
+        // _Ryu_exponent is [1, 22].
+        // Normalization adds [2, 52] (aside: at least 2 because the pre-normalized mantissa is at least 5).
+        // This adds up to [3, 130], which is well below double's maximum binary exponent 1023.
+
+        // Therefore, we just need to consider (__v.__mantissa >> _Trailing_zero_bits) * 5^_Ryu_exponent.
+
+        // If that product would exceed 53 bits, then X can't be exactly represented as a double.
+        // (That's not a problem for round-tripping, because X is close enough to the original double,
+        // but X isn't mathematically equal to the original double.) This requires a high-precision fallback.
+
+        // If the product is 53 bits or smaller, then X can be exactly represented as a double (and we don't
+        // need to re-synthesize it; the original double must have been X, because Ryu wouldn't produce the
+        // same output for two different doubles X and Y). This allows Ryu's output to be used (zero-filled).
+
+        // (2^53 - 1) / 5^0 (for indexing), (2^53 - 1) / 5^1, ..., (2^53 - 1) / 5^22
+        static constexpr uint64_t _Max_shifted_mantissa[23] = {
+          9007199254740991u, 1801439850948198u, 360287970189639u, 72057594037927u, 14411518807585u,
+          2882303761517u, 576460752303u, 115292150460u, 23058430092u, 4611686018u, 922337203u, 184467440u,
+          36893488u, 7378697u, 1475739u, 295147u, 59029u, 11805u, 2361u, 472u, 94u, 18u, 3u };
+
+        unsigned long _Trailing_zero_bits;
+#ifdef _LIBCPP_HAS_BITSCAN64
+        (void) _BitScanForward64(&_Trailing_zero_bits, __v.__mantissa); // __v.__mantissa is guaranteed nonzero
+#else // ^^^ 64-bit ^^^ / vvv 32-bit vvv
+        const uint32_t _Low_mantissa = static_cast<uint32_t>(__v.__mantissa);
+        if (_Low_mantissa != 0) {
+          (void) _BitScanForward(&_Trailing_zero_bits, _Low_mantissa);
+        } else {
+          const uint32_t _High_mantissa = static_cast<uint32_t>(__v.__mantissa >> 32); // nonzero here
+          (void) _BitScanForward(&_Trailing_zero_bits, _High_mantissa);
+          _Trailing_zero_bits += 32;
+        }
+#endif // ^^^ 32-bit ^^^
+        const uint64_t _Shifted_mantissa = __v.__mantissa >> _Trailing_zero_bits;
+        _Can_use_ryu = _Shifted_mantissa <= _Max_shifted_mantissa[_Ryu_exponent];
+      }
+
+      if (!_Can_use_ryu) {
+        // Print the integer exactly.
+        // Performance note: This will redundantly perform bounds checking.
+        // Performance note: This will redundantly decompose the IEEE representation.
+        return __d2fixed_buffered_n(_First, _Last, __f, 0);
+      }
+
+      // _Can_use_ryu
+      // Print the decimal digits, left-aligned within [_First, _First + _Total_fixed_length).
+      _Mid = _First + __olength;
+    } else { // cases "1729", "17.29", and "0.001729"
+      // Print the decimal digits, right-aligned within [_First, _First + _Total_fixed_length).
+      _Mid = _First + _Total_fixed_length;
+    }
+
+    // We prefer 32-bit operations, even on 64-bit platforms.
+    // We have at most 17 digits, and uint32_t can store 9 digits.
+    // If _Output doesn't fit into uint32_t, we cut off 8 digits,
+    // so the rest will fit into uint32_t.
+    if ((_Output >> 32) != 0) {
+      // Expensive 64-bit division.
+      const uint64_t __q = __div1e8(_Output);
+      uint32_t __output2 = static_cast<uint32_t>(_Output - 100000000 * __q);
+      _Output = __q;
+
+      const uint32_t __c = __output2 % 10000;
+      __output2 /= 10000;
+      const uint32_t __d = __output2 % 10000;
+      const uint32_t __c0 = (__c % 100) << 1;
+      const uint32_t __c1 = (__c / 100) << 1;
+      const uint32_t __d0 = (__d % 100) << 1;
+      const uint32_t __d1 = (__d / 100) << 1;
+
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c0, 2);
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c1, 2);
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __d0, 2);
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __d1, 2);
+    }
+    uint32_t __output2 = static_cast<uint32_t>(_Output);
+    while (__output2 >= 10000) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+      const uint32_t __c = __output2 - 10000 * (__output2 / 10000);
+#else
+      const uint32_t __c = __output2 % 10000;
+#endif
+      __output2 /= 10000;
+      const uint32_t __c0 = (__c % 100) << 1;
+      const uint32_t __c1 = (__c / 100) << 1;
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c0, 2);
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c1, 2);
+    }
+    if (__output2 >= 100) {
+      const uint32_t __c = (__output2 % 100) << 1;
+      __output2 /= 100;
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c, 2);
+    }
+    if (__output2 >= 10) {
+      const uint32_t __c = __output2 << 1;
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c, 2);
+    } else {
+      *--_Mid = static_cast<char>('0' + __output2);
+    }
+
+    if (_Ryu_exponent > 0) { // case "172900" with _Can_use_ryu
+      // Performance note: it might be more efficient to do this immediately after setting _Mid.
+      _VSTD::memset(_First + __olength, '0', static_cast<size_t>(_Ryu_exponent));
+    } else if (_Ryu_exponent == 0) { // case "1729"
+      // Done!
+    } else if (_Whole_digits > 0) { // case "17.29"
+      // Performance note: moving digits might not be optimal.
+      _VSTD::memmove(_First, _First + 1, static_cast<size_t>(_Whole_digits));
+      _First[_Whole_digits] = '.';
+    } else { // case "0.001729"
+      // Performance note: a larger memset() followed by overwriting '.' might be more efficient.
+      _First[0] = '0';
+      _First[1] = '.';
+      _VSTD::memset(_First + 2, '0', static_cast<size_t>(-_Whole_digits));
+    }
+
+    return { _First + _Total_fixed_length, errc{} };
+  }
+
+  const uint32_t _Total_scientific_length = __olength + (__olength > 1) // digits + possible decimal point
+    + (-100 < _Scientific_exponent && _Scientific_exponent < 100 ? 4 : 5); // + scientific exponent
+  if (_Last - _First < static_cast<ptrdiff_t>(_Total_scientific_length)) {
+    return { _Last, errc::value_too_large };
+  }
+  char* const __result = _First;
+
+  // Print the decimal digits.
+  uint32_t __i = 0;
+  // We prefer 32-bit operations, even on 64-bit platforms.
+  // We have at most 17 digits, and uint32_t can store 9 digits.
+  // If _Output doesn't fit into uint32_t, we cut off 8 digits,
+  // so the rest will fit into uint32_t.
+  if ((_Output >> 32) != 0) {
+    // Expensive 64-bit division.
+    const uint64_t __q = __div1e8(_Output);
+    uint32_t __output2 = static_cast<uint32_t>(_Output) - 100000000 * static_cast<uint32_t>(__q);
+    _Output = __q;
+
+    const uint32_t __c = __output2 % 10000;
+    __output2 /= 10000;
+    const uint32_t __d = __output2 % 10000;
+    const uint32_t __c0 = (__c % 100) << 1;
+    const uint32_t __c1 = (__c / 100) << 1;
+    const uint32_t __d0 = (__d % 100) << 1;
+    const uint32_t __d1 = (__d / 100) << 1;
+    _VSTD::memcpy(__result + __olength - __i - 1, __DIGIT_TABLE + __c0, 2);
+    _VSTD::memcpy(__result + __olength - __i - 3, __DIGIT_TABLE + __c1, 2);
+    _VSTD::memcpy(__result + __olength - __i - 5, __DIGIT_TABLE + __d0, 2);
+    _VSTD::memcpy(__result + __olength - __i - 7, __DIGIT_TABLE + __d1, 2);
+    __i += 8;
+  }
+  uint32_t __output2 = static_cast<uint32_t>(_Output);
+  while (__output2 >= 10000) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+    const uint32_t __c = __output2 - 10000 * (__output2 / 10000);
+#else
+    const uint32_t __c = __output2 % 10000;
+#endif
+    __output2 /= 10000;
+    const uint32_t __c0 = (__c % 100) << 1;
+    const uint32_t __c1 = (__c / 100) << 1;
+    _VSTD::memcpy(__result + __olength - __i - 1, __DIGIT_TABLE + __c0, 2);
+    _VSTD::memcpy(__result + __olength - __i - 3, __DIGIT_TABLE + __c1, 2);
+    __i += 4;
+  }
+  if (__output2 >= 100) {
+    const uint32_t __c = (__output2 % 100) << 1;
+    __output2 /= 100;
+    _VSTD::memcpy(__result + __olength - __i - 1, __DIGIT_TABLE + __c, 2);
+    __i += 2;
+  }
+  if (__output2 >= 10) {
+    const uint32_t __c = __output2 << 1;
+    // We can't use memcpy here: the decimal dot goes between these two digits.
+    __result[2] = __DIGIT_TABLE[__c + 1];
+    __result[0] = __DIGIT_TABLE[__c];
+  } else {
+    __result[0] = static_cast<char>('0' + __output2);
+  }
+
+  // Print decimal point if needed.
+  uint32_t __index;
+  if (__olength > 1) {
+    __result[1] = '.';
+    __index = __olength + 1;
+  } else {
+    __index = 1;
+  }
+
+  // Print the exponent.
+  __result[__index++] = 'e';
+  if (_Scientific_exponent < 0) {
+    __result[__index++] = '-';
+    _Scientific_exponent = -_Scientific_exponent;
+  } else {
+    __result[__index++] = '+';
+  }
+
+  if (_Scientific_exponent >= 100) {
+    const int32_t __c = _Scientific_exponent % 10;
+    _VSTD::memcpy(__result + __index, __DIGIT_TABLE + 2 * (_Scientific_exponent / 10), 2);
+    __result[__index + 2] = static_cast<char>('0' + __c);
+    __index += 3;
+  } else {
+    _VSTD::memcpy(__result + __index, __DIGIT_TABLE + 2 * _Scientific_exponent, 2);
+    __index += 2;
+  }
+
+  return { _First + _Total_scientific_length, errc{} };
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline bool __d2d_small_int(const uint64_t __ieeeMantissa, const uint32_t __ieeeExponent,
+  __floating_decimal_64* const __v) {
+  const uint64_t __m2 = (1ull << __DOUBLE_MANTISSA_BITS) | __ieeeMantissa;
+  const int32_t __e2 = static_cast<int32_t>(__ieeeExponent) - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS;
+
+  if (__e2 > 0) {
+    // f = __m2 * 2^__e2 >= 2^53 is an integer.
+    // Ignore this case for now.
+    return false;
+  }
+
+  if (__e2 < -52) {
+    // f < 1.
+    return false;
+  }
+
+  // Since 2^52 <= __m2 < 2^53 and 0 <= -__e2 <= 52: 1 <= f = __m2 / 2^-__e2 < 2^53.
+  // Test if the lower -__e2 bits of the significand are 0, i.e. whether the fraction is 0.
+  const uint64_t __mask = (1ull << -__e2) - 1;
+  const uint64_t __fraction = __m2 & __mask;
+  if (__fraction != 0) {
+    return false;
+  }
+
+  // f is an integer in the range [1, 2^53).
+  // Note: __mantissa might contain trailing (decimal) 0's.
+  // Note: since 2^53 < 10^16, there is no need to adjust __decimalLength17().
+  __v->__mantissa = __m2 >> -__e2;
+  __v->__exponent = 0;
+  return true;
+}
+
+[[nodiscard]] to_chars_result __d2s_buffered_n(char* const _First, char* const _Last, const double __f,
+  const chars_format _Fmt) {
+
+  // Step 1: Decode the floating-point number, and unify normalized and subnormal cases.
+  const uint64_t __bits = __double_to_bits(__f);
+
+  // Case distinction; exit early for the easy cases.
+  if (__bits == 0) {
+    if (_Fmt == chars_format::scientific) {
+      if (_Last - _First < 5) {
+        return { _Last, errc::value_too_large };
+      }
+
+      _VSTD::memcpy(_First, "0e+00", 5);
+
+      return { _First + 5, errc{} };
+    }
+
+    // Print "0" for chars_format::fixed, chars_format::general, and chars_format{}.
+    if (_First == _Last) {
+      return { _Last, errc::value_too_large };
+    }
+
+    *_First = '0';
+
+    return { _First + 1, errc{} };
+  }
+
+  // Decode __bits into mantissa and exponent.
+  const uint64_t __ieeeMantissa = __bits & ((1ull << __DOUBLE_MANTISSA_BITS) - 1);
+  const uint32_t __ieeeExponent = static_cast<uint32_t>(__bits >> __DOUBLE_MANTISSA_BITS);
+
+  if (_Fmt == chars_format::fixed) {
+    // const uint64_t _Mantissa2 = __ieeeMantissa | (1ull << __DOUBLE_MANTISSA_BITS); // restore implicit bit
+    const int32_t _Exponent2 = static_cast<int32_t>(__ieeeExponent)
+      - __DOUBLE_BIAS - __DOUBLE_MANTISSA_BITS; // bias and normalization
+
+    // Normal values are equal to _Mantissa2 * 2^_Exponent2.
+    // (Subnormals are different, but they'll be rejected by the _Exponent2 test here, so they can be ignored.)
+
+    // For nonzero integers, _Exponent2 >= -52. (The minimum value occurs when _Mantissa2 * 2^_Exponent2 is 1.
+    // In that case, _Mantissa2 is the implicit 1 bit followed by 52 zeros, so _Exponent2 is -52 to shift away
+    // the zeros.) The dense range of exactly representable integers has negative or zero exponents
+    // (as positive exponents make the range non-dense). For that dense range, Ryu will always be used:
+    // every digit is necessary to uniquely identify the value, so Ryu must print them all.
+
+    // Positive exponents are the non-dense range of exactly representable integers. This contains all of the values
+    // for which Ryu can't be used (and a few Ryu-friendly values). We can save time by detecting positive
+    // exponents here and skipping Ryu. Calling __d2fixed_buffered_n() with precision 0 is valid for all integers
+    // (so it's okay if we call it with a Ryu-friendly value).
+    if (_Exponent2 > 0) {
+      return __d2fixed_buffered_n(_First, _Last, __f, 0);
+    }
+  }
+
+  __floating_decimal_64 __v;
+  const bool __isSmallInt = __d2d_small_int(__ieeeMantissa, __ieeeExponent, &__v);
+  if (__isSmallInt) {
+    // For small integers in the range [1, 2^53), __v.__mantissa might contain trailing (decimal) zeros.
+    // For scientific notation we need to move these zeros into the exponent.
+    // (This is not needed for fixed-point notation, so it might be beneficial to trim
+    // trailing zeros in __to_chars only if needed - once fixed-point notation output is implemented.)
+    for (;;) {
+      const uint64_t __q = __div10(__v.__mantissa);
+      const uint32_t __r = static_cast<uint32_t>(__v.__mantissa) - 10 * static_cast<uint32_t>(__q);
+      if (__r != 0) {
+        break;
+      }
+      __v.__mantissa = __q;
+      ++__v.__exponent;
+    }
+  } else {
+    __v = __d2d(__ieeeMantissa, __ieeeExponent);
+  }
+
+  return __to_chars(_First, _Last, __v, _Fmt, __f);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
diff --git a/app/src/main/cpp/libcxx/src/ryu/f2s.cpp b/app/src/main/cpp/libcxx/src/ryu/f2s.cpp
new file mode 100644
index 0000000..3bcfe46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/ryu/f2s.cpp
@@ -0,0 +1,716 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// Avoid formatting to keep the changes with the original code minimal.
+// clang-format off
+
+#include <__assert>
+#include <__config>
+#include <charconv>
+
+#include "include/ryu/common.h"
+#include "include/ryu/d2fixed.h"
+#include "include/ryu/d2s_intrinsics.h"
+#include "include/ryu/digit_table.h"
+#include "include/ryu/f2s.h"
+#include "include/ryu/ryu.h"
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline constexpr int __FLOAT_MANTISSA_BITS = 23;
+inline constexpr int __FLOAT_EXPONENT_BITS = 8;
+inline constexpr int __FLOAT_BIAS = 127;
+
+inline constexpr int __FLOAT_POW5_INV_BITCOUNT = 59;
+inline constexpr uint64_t __FLOAT_POW5_INV_SPLIT[31] = {
+  576460752303423489u, 461168601842738791u, 368934881474191033u, 295147905179352826u,
+  472236648286964522u, 377789318629571618u, 302231454903657294u, 483570327845851670u,
+  386856262276681336u, 309485009821345069u, 495176015714152110u, 396140812571321688u,
+  316912650057057351u, 507060240091291761u, 405648192073033409u, 324518553658426727u,
+  519229685853482763u, 415383748682786211u, 332306998946228969u, 531691198313966350u,
+  425352958651173080u, 340282366920938464u, 544451787073501542u, 435561429658801234u,
+  348449143727040987u, 557518629963265579u, 446014903970612463u, 356811923176489971u,
+  570899077082383953u, 456719261665907162u, 365375409332725730u
+};
+inline constexpr int __FLOAT_POW5_BITCOUNT = 61;
+inline constexpr uint64_t __FLOAT_POW5_SPLIT[47] = {
+  1152921504606846976u, 1441151880758558720u, 1801439850948198400u, 2251799813685248000u,
+  1407374883553280000u, 1759218604441600000u, 2199023255552000000u, 1374389534720000000u,
+  1717986918400000000u, 2147483648000000000u, 1342177280000000000u, 1677721600000000000u,
+  2097152000000000000u, 1310720000000000000u, 1638400000000000000u, 2048000000000000000u,
+  1280000000000000000u, 1600000000000000000u, 2000000000000000000u, 1250000000000000000u,
+  1562500000000000000u, 1953125000000000000u, 1220703125000000000u, 1525878906250000000u,
+  1907348632812500000u, 1192092895507812500u, 1490116119384765625u, 1862645149230957031u,
+  1164153218269348144u, 1455191522836685180u, 1818989403545856475u, 2273736754432320594u,
+  1421085471520200371u, 1776356839400250464u, 2220446049250313080u, 1387778780781445675u,
+  1734723475976807094u, 2168404344971008868u, 1355252715606880542u, 1694065894508600678u,
+  2117582368135750847u, 1323488980084844279u, 1654361225106055349u, 2067951531382569187u,
+  1292469707114105741u, 1615587133892632177u, 2019483917365790221u
+};
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __pow5Factor(uint32_t __value) {
+  uint32_t __count = 0;
+  for (;;) {
+    _LIBCPP_ASSERT(__value != 0, "");
+    const uint32_t __q = __value / 5;
+    const uint32_t __r = __value % 5;
+    if (__r != 0) {
+      break;
+    }
+    __value = __q;
+    ++__count;
+  }
+  return __count;
+}
+
+// Returns true if __value is divisible by 5^__p.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline bool __multipleOfPowerOf5(const uint32_t __value, const uint32_t __p) {
+  return __pow5Factor(__value) >= __p;
+}
+
+// Returns true if __value is divisible by 2^__p.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline bool __multipleOfPowerOf2(const uint32_t __value, const uint32_t __p) {
+  _LIBCPP_ASSERT(__value != 0, "");
+  _LIBCPP_ASSERT(__p < 32, "");
+  // __builtin_ctz doesn't appear to be faster here.
+  return (__value & ((1u << __p) - 1)) == 0;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __mulShift(const uint32_t __m, const uint64_t __factor, const int32_t __shift) {
+  _LIBCPP_ASSERT(__shift > 32, "");
+
+  // The casts here help MSVC to avoid calls to the __allmul library
+  // function.
+  const uint32_t __factorLo = static_cast<uint32_t>(__factor);
+  const uint32_t __factorHi = static_cast<uint32_t>(__factor >> 32);
+  const uint64_t __bits0 = static_cast<uint64_t>(__m) * __factorLo;
+  const uint64_t __bits1 = static_cast<uint64_t>(__m) * __factorHi;
+
+#ifndef _LIBCPP_64_BIT
+  // On 32-bit platforms we can avoid a 64-bit shift-right since we only
+  // need the upper 32 bits of the result and the shift value is > 32.
+  const uint32_t __bits0Hi = static_cast<uint32_t>(__bits0 >> 32);
+  uint32_t __bits1Lo = static_cast<uint32_t>(__bits1);
+  uint32_t __bits1Hi = static_cast<uint32_t>(__bits1 >> 32);
+  __bits1Lo += __bits0Hi;
+  __bits1Hi += (__bits1Lo < __bits0Hi);
+  const int32_t __s = __shift - 32;
+  return (__bits1Hi << (32 - __s)) | (__bits1Lo >> __s);
+#else // ^^^ 32-bit ^^^ / vvv 64-bit vvv
+  const uint64_t __sum = (__bits0 >> 32) + __bits1;
+  const uint64_t __shiftedSum = __sum >> (__shift - 32);
+  _LIBCPP_ASSERT(__shiftedSum <= UINT32_MAX, "");
+  return static_cast<uint32_t>(__shiftedSum);
+#endif // ^^^ 64-bit ^^^
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __mulPow5InvDivPow2(const uint32_t __m, const uint32_t __q, const int32_t __j) {
+  return __mulShift(__m, __FLOAT_POW5_INV_SPLIT[__q], __j);
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline uint32_t __mulPow5divPow2(const uint32_t __m, const uint32_t __i, const int32_t __j) {
+  return __mulShift(__m, __FLOAT_POW5_SPLIT[__i], __j);
+}
+
+// A floating decimal representing m * 10^e.
+struct __floating_decimal_32 {
+  uint32_t __mantissa;
+  int32_t __exponent;
+};
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline __floating_decimal_32 __f2d(const uint32_t __ieeeMantissa, const uint32_t __ieeeExponent) {
+  int32_t __e2;
+  uint32_t __m2;
+  if (__ieeeExponent == 0) {
+    // We subtract 2 so that the bounds computation has 2 additional bits.
+    __e2 = 1 - __FLOAT_BIAS - __FLOAT_MANTISSA_BITS - 2;
+    __m2 = __ieeeMantissa;
+  } else {
+    __e2 = static_cast<int32_t>(__ieeeExponent) - __FLOAT_BIAS - __FLOAT_MANTISSA_BITS - 2;
+    __m2 = (1u << __FLOAT_MANTISSA_BITS) | __ieeeMantissa;
+  }
+  const bool __even = (__m2 & 1) == 0;
+  const bool __acceptBounds = __even;
+
+  // Step 2: Determine the interval of valid decimal representations.
+  const uint32_t __mv = 4 * __m2;
+  const uint32_t __mp = 4 * __m2 + 2;
+  // Implicit bool -> int conversion. True is 1, false is 0.
+  const uint32_t __mmShift = __ieeeMantissa != 0 || __ieeeExponent <= 1;
+  const uint32_t __mm = 4 * __m2 - 1 - __mmShift;
+
+  // Step 3: Convert to a decimal power base using 64-bit arithmetic.
+  uint32_t __vr, __vp, __vm;
+  int32_t __e10;
+  bool __vmIsTrailingZeros = false;
+  bool __vrIsTrailingZeros = false;
+  uint8_t __lastRemovedDigit = 0;
+  if (__e2 >= 0) {
+    const uint32_t __q = __log10Pow2(__e2);
+    __e10 = static_cast<int32_t>(__q);
+    const int32_t __k = __FLOAT_POW5_INV_BITCOUNT + __pow5bits(static_cast<int32_t>(__q)) - 1;
+    const int32_t __i = -__e2 + static_cast<int32_t>(__q) + __k;
+    __vr = __mulPow5InvDivPow2(__mv, __q, __i);
+    __vp = __mulPow5InvDivPow2(__mp, __q, __i);
+    __vm = __mulPow5InvDivPow2(__mm, __q, __i);
+    if (__q != 0 && (__vp - 1) / 10 <= __vm / 10) {
+      // We need to know one removed digit even if we are not going to loop below. We could use
+      // __q = X - 1 above, except that would require 33 bits for the result, and we've found that
+      // 32-bit arithmetic is faster even on 64-bit machines.
+      const int32_t __l = __FLOAT_POW5_INV_BITCOUNT + __pow5bits(static_cast<int32_t>(__q - 1)) - 1;
+      __lastRemovedDigit = static_cast<uint8_t>(__mulPow5InvDivPow2(__mv, __q - 1,
+        -__e2 + static_cast<int32_t>(__q) - 1 + __l) % 10);
+    }
+    if (__q <= 9) {
+      // The largest power of 5 that fits in 24 bits is 5^10, but __q <= 9 seems to be safe as well.
+      // Only one of __mp, __mv, and __mm can be a multiple of 5, if any.
+      if (__mv % 5 == 0) {
+        __vrIsTrailingZeros = __multipleOfPowerOf5(__mv, __q);
+      } else if (__acceptBounds) {
+        __vmIsTrailingZeros = __multipleOfPowerOf5(__mm, __q);
+      } else {
+        __vp -= __multipleOfPowerOf5(__mp, __q);
+      }
+    }
+  } else {
+    const uint32_t __q = __log10Pow5(-__e2);
+    __e10 = static_cast<int32_t>(__q) + __e2;
+    const int32_t __i = -__e2 - static_cast<int32_t>(__q);
+    const int32_t __k = __pow5bits(__i) - __FLOAT_POW5_BITCOUNT;
+    int32_t __j = static_cast<int32_t>(__q) - __k;
+    __vr = __mulPow5divPow2(__mv, static_cast<uint32_t>(__i), __j);
+    __vp = __mulPow5divPow2(__mp, static_cast<uint32_t>(__i), __j);
+    __vm = __mulPow5divPow2(__mm, static_cast<uint32_t>(__i), __j);
+    if (__q != 0 && (__vp - 1) / 10 <= __vm / 10) {
+      __j = static_cast<int32_t>(__q) - 1 - (__pow5bits(__i + 1) - __FLOAT_POW5_BITCOUNT);
+      __lastRemovedDigit = static_cast<uint8_t>(__mulPow5divPow2(__mv, static_cast<uint32_t>(__i + 1), __j) % 10);
+    }
+    if (__q <= 1) {
+      // {__vr,__vp,__vm} is trailing zeros if {__mv,__mp,__mm} has at least __q trailing 0 bits.
+      // __mv = 4 * __m2, so it always has at least two trailing 0 bits.
+      __vrIsTrailingZeros = true;
+      if (__acceptBounds) {
+        // __mm = __mv - 1 - __mmShift, so it has 1 trailing 0 bit iff __mmShift == 1.
+        __vmIsTrailingZeros = __mmShift == 1;
+      } else {
+        // __mp = __mv + 2, so it always has at least one trailing 0 bit.
+        --__vp;
+      }
+    } else if (__q < 31) { // TRANSITION(ulfjack): Use a tighter bound here.
+      __vrIsTrailingZeros = __multipleOfPowerOf2(__mv, __q - 1);
+    }
+  }
+
+  // Step 4: Find the shortest decimal representation in the interval of valid representations.
+  int32_t __removed = 0;
+  uint32_t _Output;
+  if (__vmIsTrailingZeros || __vrIsTrailingZeros) {
+    // General case, which happens rarely (~4.0%).
+    while (__vp / 10 > __vm / 10) {
+#ifdef __clang__ // TRANSITION, LLVM-23106
+      __vmIsTrailingZeros &= __vm - (__vm / 10) * 10 == 0;
+#else
+      __vmIsTrailingZeros &= __vm % 10 == 0;
+#endif
+      __vrIsTrailingZeros &= __lastRemovedDigit == 0;
+      __lastRemovedDigit = static_cast<uint8_t>(__vr % 10);
+      __vr /= 10;
+      __vp /= 10;
+      __vm /= 10;
+      ++__removed;
+    }
+    if (__vmIsTrailingZeros) {
+      while (__vm % 10 == 0) {
+        __vrIsTrailingZeros &= __lastRemovedDigit == 0;
+        __lastRemovedDigit = static_cast<uint8_t>(__vr % 10);
+        __vr /= 10;
+        __vp /= 10;
+        __vm /= 10;
+        ++__removed;
+      }
+    }
+    if (__vrIsTrailingZeros && __lastRemovedDigit == 5 && __vr % 2 == 0) {
+      // Round even if the exact number is .....50..0.
+      __lastRemovedDigit = 4;
+    }
+    // We need to take __vr + 1 if __vr is outside bounds or we need to round up.
+    _Output = __vr + ((__vr == __vm && (!__acceptBounds || !__vmIsTrailingZeros)) || __lastRemovedDigit >= 5);
+  } else {
+    // Specialized for the common case (~96.0%). Percentages below are relative to this.
+    // Loop iterations below (approximately):
+    // 0: 13.6%, 1: 70.7%, 2: 14.1%, 3: 1.39%, 4: 0.14%, 5+: 0.01%
+    while (__vp / 10 > __vm / 10) {
+      __lastRemovedDigit = static_cast<uint8_t>(__vr % 10);
+      __vr /= 10;
+      __vp /= 10;
+      __vm /= 10;
+      ++__removed;
+    }
+    // We need to take __vr + 1 if __vr is outside bounds or we need to round up.
+    _Output = __vr + (__vr == __vm || __lastRemovedDigit >= 5);
+  }
+  const int32_t __exp = __e10 + __removed;
+
+  __floating_decimal_32 __fd;
+  __fd.__exponent = __exp;
+  __fd.__mantissa = _Output;
+  return __fd;
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline to_chars_result _Large_integer_to_chars(char* const _First, char* const _Last,
+  const uint32_t _Mantissa2, const int32_t _Exponent2) {
+
+  // Print the integer _Mantissa2 * 2^_Exponent2 exactly.
+
+  // For nonzero integers, _Exponent2 >= -23. (The minimum value occurs when _Mantissa2 * 2^_Exponent2 is 1.
+  // In that case, _Mantissa2 is the implicit 1 bit followed by 23 zeros, so _Exponent2 is -23 to shift away
+  // the zeros.) The dense range of exactly representable integers has negative or zero exponents
+  // (as positive exponents make the range non-dense). For that dense range, Ryu will always be used:
+  // every digit is necessary to uniquely identify the value, so Ryu must print them all.
+
+  // Positive exponents are the non-dense range of exactly representable integers.
+  // This contains all of the values for which Ryu can't be used (and a few Ryu-friendly values).
+
+  // Performance note: Long division appears to be faster than losslessly widening float to double and calling
+  // __d2fixed_buffered_n(). If __f2fixed_buffered_n() is implemented, it might be faster than long division.
+
+  _LIBCPP_ASSERT(_Exponent2 > 0, "");
+  _LIBCPP_ASSERT(_Exponent2 <= 104, ""); // because __ieeeExponent <= 254
+
+  // Manually represent _Mantissa2 * 2^_Exponent2 as a large integer. _Mantissa2 is always 24 bits
+  // (due to the implicit bit), while _Exponent2 indicates a shift of at most 104 bits.
+  // 24 + 104 equals 128 equals 4 * 32, so we need exactly 4 32-bit elements.
+  // We use a little-endian representation, visualized like this:
+
+  // << left shift <<
+  // most significant
+  // _Data[3] _Data[2] _Data[1] _Data[0]
+  //                   least significant
+  //                   >> right shift >>
+
+  constexpr uint32_t _Data_size = 4;
+  uint32_t _Data[_Data_size]{};
+
+  // _Maxidx is the index of the most significant nonzero element.
+  uint32_t _Maxidx = ((24 + static_cast<uint32_t>(_Exponent2) + 31) / 32) - 1;
+  _LIBCPP_ASSERT(_Maxidx < _Data_size, "");
+
+  const uint32_t _Bit_shift = static_cast<uint32_t>(_Exponent2) % 32;
+  if (_Bit_shift <= 8) { // _Mantissa2's 24 bits don't cross an element boundary
+    _Data[_Maxidx] = _Mantissa2 << _Bit_shift;
+  } else { // _Mantissa2's 24 bits cross an element boundary
+    _Data[_Maxidx - 1] = _Mantissa2 << _Bit_shift;
+    _Data[_Maxidx] = _Mantissa2 >> (32 - _Bit_shift);
+  }
+
+  // If Ryu hasn't determined the total output length, we need to buffer the digits generated from right to left
+  // by long division. The largest possible float is: 340'282346638'528859811'704183484'516925440
+  uint32_t _Blocks[4];
+  int32_t _Filled_blocks = 0;
+  // From left to right, we're going to print:
+  // _Data[0] will be [1, 10] digits.
+  // Then if _Filled_blocks > 0:
+  // _Blocks[_Filled_blocks - 1], ..., _Blocks[0] will be 0-filled 9-digit blocks.
+
+  if (_Maxidx != 0) { // If the integer is actually large, perform long division.
+                      // Otherwise, skip to printing _Data[0].
+    for (;;) {
+      // Loop invariant: _Maxidx != 0 (i.e. the integer is actually large)
+
+      const uint32_t _Most_significant_elem = _Data[_Maxidx];
+      const uint32_t _Initial_remainder = _Most_significant_elem % 1000000000;
+      const uint32_t _Initial_quotient = _Most_significant_elem / 1000000000;
+      _Data[_Maxidx] = _Initial_quotient;
+      uint64_t _Remainder = _Initial_remainder;
+
+      // Process less significant elements.
+      uint32_t _Idx = _Maxidx;
+      do {
+        --_Idx; // Initially, _Remainder is at most 10^9 - 1.
+
+        // Now, _Remainder is at most (10^9 - 1) * 2^32 + 2^32 - 1, simplified to 10^9 * 2^32 - 1.
+        _Remainder = (_Remainder << 32) | _Data[_Idx];
+
+        // floor((10^9 * 2^32 - 1) / 10^9) == 2^32 - 1, so uint32_t _Quotient is lossless.
+        const uint32_t _Quotient = static_cast<uint32_t>(__div1e9(_Remainder));
+
+        // _Remainder is at most 10^9 - 1 again.
+        // For uint32_t truncation, see the __mod1e9() comment in d2s_intrinsics.h.
+        _Remainder = static_cast<uint32_t>(_Remainder) - 1000000000u * _Quotient;
+
+        _Data[_Idx] = _Quotient;
+      } while (_Idx != 0);
+
+      // Store a 0-filled 9-digit block.
+      _Blocks[_Filled_blocks++] = static_cast<uint32_t>(_Remainder);
+
+      if (_Initial_quotient == 0) { // Is the large integer shrinking?
+        --_Maxidx; // log2(10^9) is 29.9, so we can't shrink by more than one element.
+        if (_Maxidx == 0) {
+          break; // We've finished long division. Now we need to print _Data[0].
+        }
+      }
+    }
+  }
+
+  _LIBCPP_ASSERT(_Data[0] != 0, "");
+  for (uint32_t _Idx = 1; _Idx < _Data_size; ++_Idx) {
+    _LIBCPP_ASSERT(_Data[_Idx] == 0, "");
+  }
+
+  const uint32_t _Data_olength = _Data[0] >= 1000000000 ? 10 : __decimalLength9(_Data[0]);
+  const uint32_t _Total_fixed_length = _Data_olength + 9 * _Filled_blocks;
+
+  if (_Last - _First < static_cast<ptrdiff_t>(_Total_fixed_length)) {
+    return { _Last, errc::value_too_large };
+  }
+
+  char* _Result = _First;
+
+  // Print _Data[0]. While it's up to 10 digits,
+  // which is more than Ryu generates, the code below can handle this.
+  __append_n_digits(_Data_olength, _Data[0], _Result);
+  _Result += _Data_olength;
+
+  // Print 0-filled 9-digit blocks.
+  for (int32_t _Idx = _Filled_blocks - 1; _Idx >= 0; --_Idx) {
+    __append_nine_digits(_Blocks[_Idx], _Result);
+    _Result += 9;
+  }
+
+  return { _Result, errc{} };
+}
+
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI inline to_chars_result __to_chars(char* const _First, char* const _Last, const __floating_decimal_32 __v,
+  chars_format _Fmt, const uint32_t __ieeeMantissa, const uint32_t __ieeeExponent) {
+  // Step 5: Print the decimal representation.
+  uint32_t _Output = __v.__mantissa;
+  int32_t _Ryu_exponent = __v.__exponent;
+  const uint32_t __olength = __decimalLength9(_Output);
+  int32_t _Scientific_exponent = _Ryu_exponent + static_cast<int32_t>(__olength) - 1;
+
+  if (_Fmt == chars_format{}) {
+    int32_t _Lower;
+    int32_t _Upper;
+
+    if (__olength == 1) {
+      // Value | Fixed   | Scientific
+      // 1e-3  | "0.001" | "1e-03"
+      // 1e4   | "10000" | "1e+04"
+      _Lower = -3;
+      _Upper = 4;
+    } else {
+      // Value   | Fixed       | Scientific
+      // 1234e-7 | "0.0001234" | "1.234e-04"
+      // 1234e5  | "123400000" | "1.234e+08"
+      _Lower = -static_cast<int32_t>(__olength + 3);
+      _Upper = 5;
+    }
+
+    if (_Lower <= _Ryu_exponent && _Ryu_exponent <= _Upper) {
+      _Fmt = chars_format::fixed;
+    } else {
+      _Fmt = chars_format::scientific;
+    }
+  } else if (_Fmt == chars_format::general) {
+    // C11 7.21.6.1 "The fprintf function"/8:
+    // "Let P equal [...] 6 if the precision is omitted [...].
+    // Then, if a conversion with style E would have an exponent of X:
+    // - if P > X >= -4, the conversion is with style f [...].
+    // - otherwise, the conversion is with style e [...]."
+    if (-4 <= _Scientific_exponent && _Scientific_exponent < 6) {
+      _Fmt = chars_format::fixed;
+    } else {
+      _Fmt = chars_format::scientific;
+    }
+  }
+
+  if (_Fmt == chars_format::fixed) {
+    // Example: _Output == 1729, __olength == 4
+
+    // _Ryu_exponent | Printed  | _Whole_digits | _Total_fixed_length  | Notes
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //             2 | 172900   |  6            | _Whole_digits        | Ryu can't be used for printing
+    //             1 | 17290    |  5            | (sometimes adjusted) | when the trimmed digits are nonzero.
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //             0 | 1729     |  4            | _Whole_digits        | Unified length cases.
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //            -1 | 172.9    |  3            | __olength + 1        | This case can't happen for
+    //            -2 | 17.29    |  2            |                      | __olength == 1, but no additional
+    //            -3 | 1.729    |  1            |                      | code is needed to avoid it.
+    // --------------|----------|---------------|----------------------|---------------------------------------
+    //            -4 | 0.1729   |  0            | 2 - _Ryu_exponent    | C11 7.21.6.1 "The fprintf function"/8:
+    //            -5 | 0.01729  | -1            |                      | "If a decimal-point character appears,
+    //            -6 | 0.001729 | -2            |                      | at least one digit appears before it."
+
+    const int32_t _Whole_digits = static_cast<int32_t>(__olength) + _Ryu_exponent;
+
+    uint32_t _Total_fixed_length;
+    if (_Ryu_exponent >= 0) { // cases "172900" and "1729"
+      _Total_fixed_length = static_cast<uint32_t>(_Whole_digits);
+      if (_Output == 1) {
+        // Rounding can affect the number of digits.
+        // For example, 1e11f is exactly "99999997952" which is 11 digits instead of 12.
+        // We can use a lookup table to detect this and adjust the total length.
+        static constexpr uint8_t _Adjustment[39] = {
+          0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,1,0,1,1,1,0,0,1,1,0,1,0,1,1,0,0,1,0,1,1,0,1,1,1 };
+        _Total_fixed_length -= _Adjustment[_Ryu_exponent];
+        // _Whole_digits doesn't need to be adjusted because these cases won't refer to it later.
+      }
+    } else if (_Whole_digits > 0) { // case "17.29"
+      _Total_fixed_length = __olength + 1;
+    } else { // case "0.001729"
+      _Total_fixed_length = static_cast<uint32_t>(2 - _Ryu_exponent);
+    }
+
+    if (_Last - _First < static_cast<ptrdiff_t>(_Total_fixed_length)) {
+      return { _Last, errc::value_too_large };
+    }
+
+    char* _Mid;
+    if (_Ryu_exponent > 0) { // case "172900"
+      bool _Can_use_ryu;
+
+      if (_Ryu_exponent > 10) { // 10^10 is the largest power of 10 that's exactly representable as a float.
+        _Can_use_ryu = false;
+      } else {
+        // Ryu generated X: __v.__mantissa * 10^_Ryu_exponent
+        // __v.__mantissa == 2^_Trailing_zero_bits * (__v.__mantissa >> _Trailing_zero_bits)
+        // 10^_Ryu_exponent == 2^_Ryu_exponent * 5^_Ryu_exponent
+
+        // _Trailing_zero_bits is [0, 29] (aside: because 2^29 is the largest power of 2
+        // with 9 decimal digits, which is float's round-trip limit.)
+        // _Ryu_exponent is [1, 10].
+        // Normalization adds [2, 23] (aside: at least 2 because the pre-normalized mantissa is at least 5).
+        // This adds up to [3, 62], which is well below float's maximum binary exponent 127.
+
+        // Therefore, we just need to consider (__v.__mantissa >> _Trailing_zero_bits) * 5^_Ryu_exponent.
+
+        // If that product would exceed 24 bits, then X can't be exactly represented as a float.
+        // (That's not a problem for round-tripping, because X is close enough to the original float,
+        // but X isn't mathematically equal to the original float.) This requires a high-precision fallback.
+
+        // If the product is 24 bits or smaller, then X can be exactly represented as a float (and we don't
+        // need to re-synthesize it; the original float must have been X, because Ryu wouldn't produce the
+        // same output for two different floats X and Y). This allows Ryu's output to be used (zero-filled).
+
+        // (2^24 - 1) / 5^0 (for indexing), (2^24 - 1) / 5^1, ..., (2^24 - 1) / 5^10
+        static constexpr uint32_t _Max_shifted_mantissa[11] = {
+          16777215, 3355443, 671088, 134217, 26843, 5368, 1073, 214, 42, 8, 1 };
+
+        unsigned long _Trailing_zero_bits;
+        (void) _BitScanForward(&_Trailing_zero_bits, __v.__mantissa); // __v.__mantissa is guaranteed nonzero
+        const uint32_t _Shifted_mantissa = __v.__mantissa >> _Trailing_zero_bits;
+        _Can_use_ryu = _Shifted_mantissa <= _Max_shifted_mantissa[_Ryu_exponent];
+      }
+
+      if (!_Can_use_ryu) {
+        const uint32_t _Mantissa2 = __ieeeMantissa | (1u << __FLOAT_MANTISSA_BITS); // restore implicit bit
+        const int32_t _Exponent2 = static_cast<int32_t>(__ieeeExponent)
+          - __FLOAT_BIAS - __FLOAT_MANTISSA_BITS; // bias and normalization
+
+        // Performance note: We've already called Ryu, so this will redundantly perform buffering and bounds checking.
+        return _Large_integer_to_chars(_First, _Last, _Mantissa2, _Exponent2);
+      }
+
+      // _Can_use_ryu
+      // Print the decimal digits, left-aligned within [_First, _First + _Total_fixed_length).
+      _Mid = _First + __olength;
+    } else { // cases "1729", "17.29", and "0.001729"
+      // Print the decimal digits, right-aligned within [_First, _First + _Total_fixed_length).
+      _Mid = _First + _Total_fixed_length;
+    }
+
+    while (_Output >= 10000) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+      const uint32_t __c = _Output - 10000 * (_Output / 10000);
+#else
+      const uint32_t __c = _Output % 10000;
+#endif
+      _Output /= 10000;
+      const uint32_t __c0 = (__c % 100) << 1;
+      const uint32_t __c1 = (__c / 100) << 1;
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c0, 2);
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c1, 2);
+    }
+    if (_Output >= 100) {
+      const uint32_t __c = (_Output % 100) << 1;
+      _Output /= 100;
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c, 2);
+    }
+    if (_Output >= 10) {
+      const uint32_t __c = _Output << 1;
+      _VSTD::memcpy(_Mid -= 2, __DIGIT_TABLE + __c, 2);
+    } else {
+      *--_Mid = static_cast<char>('0' + _Output);
+    }
+
+    if (_Ryu_exponent > 0) { // case "172900" with _Can_use_ryu
+      // Performance note: it might be more efficient to do this immediately after setting _Mid.
+      _VSTD::memset(_First + __olength, '0', static_cast<size_t>(_Ryu_exponent));
+    } else if (_Ryu_exponent == 0) { // case "1729"
+      // Done!
+    } else if (_Whole_digits > 0) { // case "17.29"
+      // Performance note: moving digits might not be optimal.
+      _VSTD::memmove(_First, _First + 1, static_cast<size_t>(_Whole_digits));
+      _First[_Whole_digits] = '.';
+    } else { // case "0.001729"
+      // Performance note: a larger memset() followed by overwriting '.' might be more efficient.
+      _First[0] = '0';
+      _First[1] = '.';
+      _VSTD::memset(_First + 2, '0', static_cast<size_t>(-_Whole_digits));
+    }
+
+    return { _First + _Total_fixed_length, errc{} };
+  }
+
+  const uint32_t _Total_scientific_length =
+    __olength + (__olength > 1) + 4; // digits + possible decimal point + scientific exponent
+  if (_Last - _First < static_cast<ptrdiff_t>(_Total_scientific_length)) {
+    return { _Last, errc::value_too_large };
+  }
+  char* const __result = _First;
+
+  // Print the decimal digits.
+  uint32_t __i = 0;
+  while (_Output >= 10000) {
+#ifdef __clang__ // TRANSITION, LLVM-38217
+    const uint32_t __c = _Output - 10000 * (_Output / 10000);
+#else
+    const uint32_t __c = _Output % 10000;
+#endif
+    _Output /= 10000;
+    const uint32_t __c0 = (__c % 100) << 1;
+    const uint32_t __c1 = (__c / 100) << 1;
+    _VSTD::memcpy(__result + __olength - __i - 1, __DIGIT_TABLE + __c0, 2);
+    _VSTD::memcpy(__result + __olength - __i - 3, __DIGIT_TABLE + __c1, 2);
+    __i += 4;
+  }
+  if (_Output >= 100) {
+    const uint32_t __c = (_Output % 100) << 1;
+    _Output /= 100;
+    _VSTD::memcpy(__result + __olength - __i - 1, __DIGIT_TABLE + __c, 2);
+    __i += 2;
+  }
+  if (_Output >= 10) {
+    const uint32_t __c = _Output << 1;
+    // We can't use memcpy here: the decimal dot goes between these two digits.
+    __result[2] = __DIGIT_TABLE[__c + 1];
+    __result[0] = __DIGIT_TABLE[__c];
+  } else {
+    __result[0] = static_cast<char>('0' + _Output);
+  }
+
+  // Print decimal point if needed.
+  uint32_t __index;
+  if (__olength > 1) {
+    __result[1] = '.';
+    __index = __olength + 1;
+  } else {
+    __index = 1;
+  }
+
+  // Print the exponent.
+  __result[__index++] = 'e';
+  if (_Scientific_exponent < 0) {
+    __result[__index++] = '-';
+    _Scientific_exponent = -_Scientific_exponent;
+  } else {
+    __result[__index++] = '+';
+  }
+
+  _VSTD::memcpy(__result + __index, __DIGIT_TABLE + 2 * _Scientific_exponent, 2);
+  __index += 2;
+
+  return { _First + _Total_scientific_length, errc{} };
+}
+
+[[nodiscard]] to_chars_result __f2s_buffered_n(char* const _First, char* const _Last, const float __f,
+  const chars_format _Fmt) {
+
+  // Step 1: Decode the floating-point number, and unify normalized and subnormal cases.
+  const uint32_t __bits = __float_to_bits(__f);
+
+  // Case distinction; exit early for the easy cases.
+  if (__bits == 0) {
+    if (_Fmt == chars_format::scientific) {
+      if (_Last - _First < 5) {
+        return { _Last, errc::value_too_large };
+      }
+
+      _VSTD::memcpy(_First, "0e+00", 5);
+
+      return { _First + 5, errc{} };
+    }
+
+    // Print "0" for chars_format::fixed, chars_format::general, and chars_format{}.
+    if (_First == _Last) {
+      return { _Last, errc::value_too_large };
+    }
+
+    *_First = '0';
+
+    return { _First + 1, errc{} };
+  }
+
+  // Decode __bits into mantissa and exponent.
+  const uint32_t __ieeeMantissa = __bits & ((1u << __FLOAT_MANTISSA_BITS) - 1);
+  const uint32_t __ieeeExponent = __bits >> __FLOAT_MANTISSA_BITS;
+
+  // When _Fmt == chars_format::fixed and the floating-point number is a large integer,
+  // it's faster to skip Ryu and immediately print the integer exactly.
+  if (_Fmt == chars_format::fixed) {
+    const uint32_t _Mantissa2 = __ieeeMantissa | (1u << __FLOAT_MANTISSA_BITS); // restore implicit bit
+    const int32_t _Exponent2 = static_cast<int32_t>(__ieeeExponent)
+      - __FLOAT_BIAS - __FLOAT_MANTISSA_BITS; // bias and normalization
+
+    // Normal values are equal to _Mantissa2 * 2^_Exponent2.
+    // (Subnormals are different, but they'll be rejected by the _Exponent2 test here, so they can be ignored.)
+
+    if (_Exponent2 > 0) {
+      return _Large_integer_to_chars(_First, _Last, _Mantissa2, _Exponent2);
+    }
+  }
+
+  const __floating_decimal_32 __v = __f2d(__ieeeMantissa, __ieeeExponent);
+  return __to_chars(_First, _Last, __v, _Fmt, __ieeeMantissa, __ieeeExponent);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+// clang-format on
diff --git a/app/src/main/cpp/libcxx/src/shared_mutex.cpp b/app/src/main/cpp/libcxx/src/shared_mutex.cpp
new file mode 100644
index 0000000..73d4dc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/shared_mutex.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+#include <shared_mutex>
+#if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#  pragma comment(lib, "pthread")
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// Shared Mutex Base
+__shared_mutex_base::__shared_mutex_base()
+    : __state_(0)
+{
+}
+
+// Exclusive ownership
+
+void
+__shared_mutex_base::lock()
+{
+    unique_lock<mutex> lk(__mut_);
+    while (__state_ & __write_entered_)
+        __gate1_.wait(lk);
+    __state_ |= __write_entered_;
+    while (__state_ & __n_readers_)
+        __gate2_.wait(lk);
+}
+
+bool
+__shared_mutex_base::try_lock()
+{
+    unique_lock<mutex> lk(__mut_);
+    if (__state_ == 0)
+    {
+        __state_ = __write_entered_;
+        return true;
+    }
+    return false;
+}
+
+void
+__shared_mutex_base::unlock()
+{
+    lock_guard<mutex> _(__mut_);
+    __state_ = 0;
+    __gate1_.notify_all();
+}
+
+// Shared ownership
+
+void
+__shared_mutex_base::lock_shared()
+{
+    unique_lock<mutex> lk(__mut_);
+    while ((__state_ & __write_entered_) || (__state_ & __n_readers_) == __n_readers_)
+        __gate1_.wait(lk);
+    unsigned num_readers = (__state_ & __n_readers_) + 1;
+    __state_ &= ~__n_readers_;
+    __state_ |= num_readers;
+}
+
+bool
+__shared_mutex_base::try_lock_shared()
+{
+    unique_lock<mutex> lk(__mut_);
+    unsigned num_readers = __state_ & __n_readers_;
+    if (!(__state_ & __write_entered_) && num_readers != __n_readers_)
+    {
+        ++num_readers;
+        __state_ &= ~__n_readers_;
+        __state_ |= num_readers;
+        return true;
+    }
+    return false;
+}
+
+void
+__shared_mutex_base::unlock_shared()
+{
+    lock_guard<mutex> _(__mut_);
+    unsigned num_readers = (__state_ & __n_readers_) - 1;
+    __state_ &= ~__n_readers_;
+    __state_ |= num_readers;
+    if (__state_ & __write_entered_)
+    {
+        if (num_readers == 0)
+            __gate2_.notify_one();
+    }
+    else
+    {
+        if (num_readers == __n_readers_ - 1)
+            __gate1_.notify_one();
+    }
+}
+
+
+// Shared Timed Mutex
+// These routines are here for ABI stability
+shared_timed_mutex::shared_timed_mutex() : __base_() {}
+void shared_timed_mutex::lock()     { return __base_.lock(); }
+bool shared_timed_mutex::try_lock() { return __base_.try_lock(); }
+void shared_timed_mutex::unlock()   { return __base_.unlock(); }
+void shared_timed_mutex::lock_shared() { return __base_.lock_shared(); }
+bool shared_timed_mutex::try_lock_shared() { return __base_.try_lock_shared(); }
+void shared_timed_mutex::unlock_shared() { return __base_.unlock_shared(); }
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // !_LIBCPP_HAS_NO_THREADS
diff --git a/app/src/main/cpp/libcxx/src/stdexcept.cpp b/app/src/main/cpp/libcxx/src/stdexcept.cpp
new file mode 100644
index 0000000..d08b674
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/stdexcept.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <new>
+#include <stdexcept>
+#include <string>
+#include <system_error>
+
+#ifdef _LIBCPP_ABI_VCRUNTIME
+#include "support/runtime/stdexcept_vcruntime.ipp"
+#else
+#include "support/runtime/stdexcept_default.ipp"
+#endif
diff --git a/app/src/main/cpp/libcxx/src/string.cpp b/app/src/main/cpp/libcxx/src/string.cpp
new file mode 100644
index 0000000..db211b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/string.cpp
@@ -0,0 +1,392 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <cerrno>
+#include <charconv>
+#include <cstdlib>
+#include <limits>
+#include <stdexcept>
+#include <stdio.h>
+#include <string>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+#  include <cwchar>
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_ABI_DO_NOT_EXPORT_BASIC_STRING_COMMON
+
+template <bool>
+struct __basic_string_common;
+
+// The struct isn't declared anymore in the headers. It's only here for ABI compatibility.
+template <>
+struct __basic_string_common<true> {
+    _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __throw_length_error() const;
+    _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __throw_out_of_range() const;
+};
+
+void __basic_string_common<true>::__throw_length_error() const {
+    std::__throw_length_error("basic_string");
+}
+void __basic_string_common<true>::__throw_out_of_range() const {
+    std::__throw_out_of_range("basic_string");
+}
+
+#endif // _LIBCPP_ABI_DO_NOT_EXPORT_BASIC_STRING_COMMON
+
+#define _LIBCPP_EXTERN_TEMPLATE_DEFINE(...) template __VA_ARGS__;
+#ifdef _LIBCPP_ABI_STRING_OPTIMIZED_EXTERNAL_INSTANTIATION
+    _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE_DEFINE, char)
+#   ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        _LIBCPP_STRING_UNSTABLE_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE_DEFINE, wchar_t)
+#   endif
+#else
+    _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE_DEFINE, char)
+#   ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+        _LIBCPP_STRING_V1_EXTERN_TEMPLATE_LIST(_LIBCPP_EXTERN_TEMPLATE_DEFINE, wchar_t)
+#   endif
+#endif
+#undef _LIBCPP_EXTERN_TEMPLATE_DEFINE
+
+template string operator+<char, char_traits<char>, allocator<char>>(char const*, string const&);
+
+namespace
+{
+
+template<typename T>
+inline void throw_helper(const string& msg) {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    throw T(msg);
+#else
+    fprintf(stderr, "%s\n", msg.c_str());
+    _VSTD::abort();
+#endif
+}
+
+inline void throw_from_string_out_of_range(const string& func) {
+    throw_helper<out_of_range>(func + ": out of range");
+}
+
+inline void throw_from_string_invalid_arg(const string& func) {
+    throw_helper<invalid_argument>(func + ": no conversion");
+}
+
+// as_integer
+
+template<typename V, typename S, typename F>
+inline V as_integer_helper(const string& func, const S& str, size_t* idx, int base, F f) {
+    typename S::value_type* ptr = nullptr;
+    const typename S::value_type* const p = str.c_str();
+    __libcpp_remove_reference_t<decltype(errno)> errno_save = errno;
+    errno = 0;
+    V r = f(p, &ptr, base);
+    swap(errno, errno_save);
+    if (errno_save == ERANGE)
+        throw_from_string_out_of_range(func);
+    if (ptr == p)
+        throw_from_string_invalid_arg(func);
+    if (idx)
+        *idx = static_cast<size_t>(ptr - p);
+    return r;
+}
+
+template<typename V, typename S>
+inline V as_integer(const string& func, const S& s, size_t* idx, int base);
+
+// string
+template<>
+inline int as_integer(const string& func, const string& s, size_t* idx, int base) {
+    // Use long as no Standard string to integer exists.
+    long r = as_integer_helper<long>(func, s, idx, base, strtol);
+    if (r < numeric_limits<int>::min() || numeric_limits<int>::max() < r)
+        throw_from_string_out_of_range(func);
+    return static_cast<int>(r);
+}
+
+template<>
+inline long as_integer(const string& func, const string& s, size_t* idx, int base) {
+    return as_integer_helper<long>(func, s, idx, base, strtol);
+}
+
+template<>
+inline unsigned long as_integer(const string& func, const string& s, size_t* idx, int base) {
+    return as_integer_helper<unsigned long>(func, s, idx, base, strtoul);
+}
+
+template<>
+inline long long as_integer(const string& func, const string& s, size_t* idx, int base) {
+    return as_integer_helper<long long>(func, s, idx, base, strtoll);
+}
+
+template<>
+inline unsigned long long as_integer(const string& func, const string& s, size_t* idx, int base) {
+    return as_integer_helper<unsigned long long>(func, s, idx, base, strtoull);
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+// wstring
+template<>
+inline int as_integer(const string& func, const wstring& s, size_t* idx, int base) {
+    // Use long as no Stantard string to integer exists.
+    long r = as_integer_helper<long>(func, s, idx, base, wcstol);
+    if (r < numeric_limits<int>::min() || numeric_limits<int>::max() < r)
+        throw_from_string_out_of_range(func);
+    return static_cast<int>(r);
+}
+
+template<>
+inline long as_integer(const string& func, const wstring& s, size_t* idx, int base) {
+    return as_integer_helper<long>(func, s, idx, base, wcstol);
+}
+
+template<>
+inline
+unsigned long
+as_integer(const string& func, const wstring& s, size_t* idx, int base)
+{
+    return as_integer_helper<unsigned long>(func, s, idx, base, wcstoul);
+}
+
+template<>
+inline long long as_integer(const string& func, const wstring& s, size_t* idx, int base) {
+    return as_integer_helper<long long>(func, s, idx, base, wcstoll);
+}
+
+template<>
+inline unsigned long long as_integer(const string& func, const wstring& s, size_t* idx, int base) {
+    return as_integer_helper<unsigned long long>(func, s, idx, base, wcstoull);
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// as_float
+
+template<typename V, typename S, typename F>
+inline V as_float_helper(const string& func, const S& str, size_t* idx, F f) {
+    typename S::value_type* ptr = nullptr;
+    const typename S::value_type* const p = str.c_str();
+    __libcpp_remove_reference_t<decltype(errno)> errno_save = errno;
+    errno = 0;
+    V r = f(p, &ptr);
+    swap(errno, errno_save);
+    if (errno_save == ERANGE)
+        throw_from_string_out_of_range(func);
+    if (ptr == p)
+        throw_from_string_invalid_arg(func);
+    if (idx)
+        *idx = static_cast<size_t>(ptr - p);
+    return r;
+}
+
+template<typename V, typename S>
+inline V as_float(const string& func, const S& s, size_t* idx = nullptr);
+
+template<>
+inline float as_float(const string& func, const string& s, size_t* idx) {
+    return as_float_helper<float>(func, s, idx, strtof);
+}
+
+template<>
+inline double as_float(const string& func, const string& s, size_t* idx) {
+    return as_float_helper<double>(func, s, idx, strtod);
+}
+
+template<>
+inline long double as_float(const string& func, const string& s, size_t* idx) {
+    return as_float_helper<long double>(func, s, idx, strtold);
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template<>
+inline float as_float(const string& func, const wstring& s, size_t* idx) {
+    return as_float_helper<float>(func, s, idx, wcstof);
+}
+
+template<>
+inline double as_float(const string& func, const wstring& s, size_t* idx) {
+    return as_float_helper<double>(func, s, idx, wcstod);
+}
+
+template<>
+inline long double as_float(const string& func, const wstring& s, size_t* idx) {
+    return as_float_helper<long double>(func, s, idx, wcstold);
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+}  // unnamed namespace
+
+int stoi(const string& str, size_t* idx, int base) {
+    return as_integer<int>("stoi", str, idx, base);
+}
+
+long stol(const string& str, size_t* idx, int base) {
+    return as_integer<long>("stol", str, idx, base);
+}
+
+unsigned long stoul(const string& str, size_t* idx, int base) {
+    return as_integer<unsigned long>("stoul", str, idx, base);
+}
+
+long long stoll(const string& str, size_t* idx, int base) {
+    return as_integer<long long>("stoll", str, idx, base);
+}
+
+unsigned long long stoull(const string& str, size_t* idx, int base) {
+    return as_integer<unsigned long long>("stoull", str, idx, base);
+}
+
+float stof(const string& str, size_t* idx) {
+    return as_float<float>("stof", str, idx);
+}
+
+double stod(const string& str, size_t* idx) {
+    return as_float<double>("stod", str, idx);
+}
+
+long double stold(const string& str, size_t* idx) {
+    return as_float<long double>("stold", str, idx);
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+int stoi(const wstring& str, size_t* idx, int base) {
+    return as_integer<int>("stoi", str, idx, base);
+}
+
+long stol(const wstring& str, size_t* idx, int base) {
+    return as_integer<long>("stol", str, idx, base);
+}
+
+unsigned long stoul(const wstring& str, size_t* idx, int base) {
+    return as_integer<unsigned long>("stoul", str, idx, base);
+}
+
+long long stoll(const wstring& str, size_t* idx, int base) {
+    return as_integer<long long>("stoll", str, idx, base);
+}
+
+unsigned long long stoull(const wstring& str, size_t* idx, int base) {
+    return as_integer<unsigned long long>("stoull", str, idx, base);
+}
+
+float stof(const wstring& str, size_t* idx) {
+    return as_float<float>("stof", str, idx);
+}
+
+double stod(const wstring& str, size_t* idx) {
+    return as_float<double>("stod", str, idx);
+}
+
+long double stold(const wstring& str, size_t* idx) {
+    return as_float<long double>("stold", str, idx);
+}
+#endif // !_LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+// to_string
+
+namespace
+{
+
+// as_string
+
+template<typename S, typename P, typename V >
+inline S as_string(P sprintf_like, S s, const typename S::value_type* fmt, V a) {
+    typedef typename S::size_type size_type;
+    size_type available = s.size();
+    while (true) {
+        int status = sprintf_like(&s[0], available + 1, fmt, a);
+        if (status >= 0) {
+            size_type used = static_cast<size_type>(status);
+            if (used <= available) {
+                s.resize(used);
+                break;
+            }
+            available = used; // Assume this is advice of how much space we need.
+        }
+        else
+            available = available * 2 + 1;
+        s.resize(available);
+    }
+    return s;
+}
+
+template <class S>
+struct initial_string;
+
+template <>
+struct initial_string<string> {
+    string operator()() const {
+        string s;
+        s.resize(s.capacity());
+        return s;
+    }
+};
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <>
+struct initial_string<wstring> {
+    wstring operator()() const {
+        wstring s(20, wchar_t());
+        s.resize(s.capacity());
+        return s;
+    }
+};
+
+typedef int (*wide_printf)(wchar_t* __restrict, size_t, const wchar_t*__restrict, ...);
+
+inline wide_printf get_swprintf() {
+#ifndef _LIBCPP_MSVCRT
+    return swprintf;
+#else
+    return static_cast<int (__cdecl*)(wchar_t* __restrict, size_t, const wchar_t*__restrict, ...)>(_snwprintf);
+#endif
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+template <typename S, typename V>
+S i_to_string(V v) {
+//  numeric_limits::digits10 returns value less on 1 than desired for unsigned numbers.
+//  For example, for 1-byte unsigned value digits10 is 2 (999 can not be represented),
+//  so we need +1 here.
+    constexpr size_t bufsize = numeric_limits<V>::digits10 + 2;  // +1 for minus, +1 for digits10
+    char buf[bufsize];
+    const auto res = to_chars(buf, buf + bufsize, v);
+    _LIBCPP_ASSERT(res.ec == errc(), "bufsize must be large enough to accomodate the value");
+    return S(buf, res.ptr);
+}
+
+}  // unnamed namespace
+
+string  to_string (int val)                { return i_to_string< string>(val); }
+string  to_string (long val)               { return i_to_string< string>(val); }
+string  to_string (long long val)          { return i_to_string< string>(val); }
+string  to_string (unsigned val)           { return i_to_string< string>(val); }
+string  to_string (unsigned long val)      { return i_to_string< string>(val); }
+string  to_string (unsigned long long val) { return i_to_string< string>(val); }
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+wstring to_wstring(int val)                { return i_to_string<wstring>(val); }
+wstring to_wstring(long val)               { return i_to_string<wstring>(val); }
+wstring to_wstring(long long val)          { return i_to_string<wstring>(val); }
+wstring to_wstring(unsigned val)           { return i_to_string<wstring>(val); }
+wstring to_wstring(unsigned long val)      { return i_to_string<wstring>(val); }
+wstring to_wstring(unsigned long long val) { return i_to_string<wstring>(val); }
+#endif
+
+string  to_string (float val)       { return as_string(snprintf,       initial_string< string>()(),   "%f", val); }
+string  to_string (double val)      { return as_string(snprintf,       initial_string< string>()(),   "%f", val); }
+string  to_string (long double val) { return as_string(snprintf,       initial_string< string>()(),  "%Lf", val); }
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+wstring to_wstring(float val)       { return as_string(get_swprintf(), initial_string<wstring>()(),  L"%f", val); }
+wstring to_wstring(double val)      { return as_string(get_swprintf(), initial_string<wstring>()(),  L"%f", val); }
+wstring to_wstring(long double val) { return as_string(get_swprintf(), initial_string<wstring>()(), L"%Lf", val); }
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/strstream.cpp b/app/src/main/cpp/libcxx/src/strstream.cpp
new file mode 100644
index 0000000..87c235a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/strstream.cpp
@@ -0,0 +1,340 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <__utility/unreachable.h>
+#include <algorithm>
+#include <climits>
+#include <cstdlib>
+#include <cstring>
+#include <strstream>
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+strstreambuf::strstreambuf(streamsize __alsize)
+    : __strmode_(__dynamic),
+      __alsize_(__alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+}
+
+strstreambuf::strstreambuf(void* (*__palloc)(size_t), void (*__pfree)(void*))
+    : __strmode_(__dynamic),
+      __alsize_(__default_alsize),
+      __palloc_(__palloc),
+      __pfree_(__pfree)
+{
+}
+
+void
+strstreambuf::__init(char* __gnext, streamsize __n, char* __pbeg)
+{
+    if (__n == 0)
+        __n = static_cast<streamsize>(strlen(__gnext));
+    else if (__n < 0)
+        __n = INT_MAX;
+    if (__pbeg == nullptr)
+        setg(__gnext, __gnext, __gnext + __n);
+    else
+    {
+        setg(__gnext, __gnext, __pbeg);
+        setp(__pbeg, __pbeg + __n);
+    }
+}
+
+strstreambuf::strstreambuf(char* __gnext, streamsize __n, char* __pbeg)
+    : __strmode_(),
+      __alsize_(__default_alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+    __init(__gnext, __n, __pbeg);
+}
+
+strstreambuf::strstreambuf(const char* __gnext, streamsize __n)
+    : __strmode_(__constant),
+      __alsize_(__default_alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+    __init(const_cast<char *>(__gnext), __n, nullptr);
+}
+
+strstreambuf::strstreambuf(signed char* __gnext, streamsize __n, signed char* __pbeg)
+    : __strmode_(),
+      __alsize_(__default_alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+    __init(const_cast<char *>(reinterpret_cast<const char*>(__gnext)), __n, reinterpret_cast<char*>(__pbeg));
+}
+
+strstreambuf::strstreambuf(const signed char* __gnext, streamsize __n)
+    : __strmode_(__constant),
+      __alsize_(__default_alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+    __init(const_cast<char *>(reinterpret_cast<const char*>(__gnext)), __n, nullptr);
+}
+
+strstreambuf::strstreambuf(unsigned char* __gnext, streamsize __n, unsigned char* __pbeg)
+    : __strmode_(),
+      __alsize_(__default_alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+    __init(const_cast<char *>(reinterpret_cast<const char*>(__gnext)), __n, reinterpret_cast<char*>(__pbeg));
+}
+
+strstreambuf::strstreambuf(const unsigned char* __gnext, streamsize __n)
+    : __strmode_(__constant),
+      __alsize_(__default_alsize),
+      __palloc_(nullptr),
+      __pfree_(nullptr)
+{
+    __init(const_cast<char *>(reinterpret_cast<const char*>(__gnext)), __n, nullptr);
+}
+
+strstreambuf::~strstreambuf()
+{
+    if (eback() && (__strmode_ & __allocated) != 0 && (__strmode_ & __frozen) == 0)
+    {
+        if (__pfree_)
+            __pfree_(eback());
+        else
+            delete [] eback();
+    }
+}
+
+void
+strstreambuf::swap(strstreambuf& __rhs)
+{
+    streambuf::swap(__rhs);
+    _VSTD::swap(__strmode_, __rhs.__strmode_);
+    _VSTD::swap(__alsize_, __rhs.__alsize_);
+    _VSTD::swap(__palloc_, __rhs.__palloc_);
+    _VSTD::swap(__pfree_, __rhs.__pfree_);
+}
+
+void
+strstreambuf::freeze(bool __freezefl)
+{
+    if (__strmode_ & __dynamic)
+    {
+        if (__freezefl)
+            __strmode_ |= __frozen;
+        else
+            __strmode_ &= ~__frozen;
+    }
+}
+
+char*
+strstreambuf::str()
+{
+    if (__strmode_ & __dynamic)
+        __strmode_ |= __frozen;
+    return eback();
+}
+
+int
+strstreambuf::pcount() const
+{
+    return static_cast<int>(pptr() - pbase());
+}
+
+strstreambuf::int_type
+strstreambuf::overflow(int_type __c)
+{
+    if (__c == EOF)
+        return int_type(0);
+    if (pptr() == epptr())
+    {
+        if ((__strmode_ & __dynamic) == 0 || (__strmode_ & __frozen) != 0)
+            return int_type(EOF);
+        size_t old_size = static_cast<size_t> ((epptr() ? epptr() : egptr()) - eback());
+        size_t new_size = max<size_t>(static_cast<size_t>(__alsize_), 2*old_size);
+        if (new_size == 0)
+            new_size = __default_alsize;
+        char* buf = nullptr;
+        if (__palloc_)
+            buf = static_cast<char*>(__palloc_(new_size));
+        else
+            buf = new char[new_size];
+        if (buf == nullptr)
+            return int_type(EOF);
+        if (old_size != 0) {
+            _LIBCPP_ASSERT(eback(), "overflow copying from NULL");
+            memcpy(buf, eback(), static_cast<size_t>(old_size));
+        }
+        ptrdiff_t ninp = gptr()  - eback();
+        ptrdiff_t einp = egptr() - eback();
+        ptrdiff_t nout = pptr()  - pbase();
+        if (__strmode_ & __allocated)
+        {
+            if (__pfree_)
+                __pfree_(eback());
+            else
+                delete [] eback();
+        }
+        setg(buf, buf + ninp, buf + einp);
+        setp(buf + einp, buf + new_size);
+        __pbump(nout);
+        __strmode_ |= __allocated;
+    }
+    *pptr() = static_cast<char>(__c);
+    pbump(1);
+    return int_type(static_cast<unsigned char>(__c));
+}
+
+strstreambuf::int_type
+strstreambuf::pbackfail(int_type __c)
+{
+    if (eback() == gptr())
+        return EOF;
+    if (__c == EOF)
+    {
+        gbump(-1);
+        return int_type(0);
+    }
+    if (__strmode_ & __constant)
+    {
+        if (gptr()[-1] == static_cast<char>(__c))
+        {
+            gbump(-1);
+            return __c;
+        }
+        return EOF;
+    }
+    gbump(-1);
+    *gptr() = static_cast<char>(__c);
+    return __c;
+}
+
+strstreambuf::int_type
+strstreambuf::underflow()
+{
+    if (gptr() == egptr())
+    {
+        if (egptr() >= pptr())
+            return EOF;
+        setg(eback(), gptr(), pptr());
+    }
+    return int_type(static_cast<unsigned char>(*gptr()));
+}
+
+strstreambuf::pos_type
+strstreambuf::seekoff(off_type __off, ios_base::seekdir __way, ios_base::openmode __which)
+{
+    off_type __p(-1);
+    bool pos_in = (__which & ios::in) != 0;
+    bool pos_out = (__which & ios::out) != 0;
+    bool legal = false;
+    switch (__way)
+    {
+    case ios::beg:
+    case ios::end:
+        if (pos_in || pos_out)
+            legal = true;
+        break;
+    case ios::cur:
+        if (pos_in != pos_out)
+            legal = true;
+        break;
+    }
+    if (pos_in && gptr() == nullptr)
+        legal = false;
+    if (pos_out && pptr() == nullptr)
+        legal = false;
+    if (legal)
+    {
+        off_type newoff;
+        char* seekhigh = epptr() ? epptr() : egptr();
+        switch (__way)
+        {
+        case ios::beg:
+            newoff = 0;
+            break;
+        case ios::cur:
+            newoff = (pos_in ? gptr() : pptr()) - eback();
+            break;
+        case ios::end:
+            newoff = seekhigh - eback();
+            break;
+        default:
+            __libcpp_unreachable();
+        }
+        newoff += __off;
+        if (0 <= newoff && newoff <= seekhigh - eback())
+        {
+            char* newpos = eback() + newoff;
+            if (pos_in)
+                setg(eback(), newpos, _VSTD::max(newpos, egptr()));
+            if (pos_out)
+            {
+                // min(pbase, newpos), newpos, epptr()
+                __off = epptr() - newpos;
+                setp(min(pbase(), newpos), epptr());
+                __pbump((epptr() - pbase()) - __off);
+            }
+            __p = newoff;
+        }
+    }
+    return pos_type(__p);
+}
+
+strstreambuf::pos_type
+strstreambuf::seekpos(pos_type __sp, ios_base::openmode __which)
+{
+    off_type __p(-1);
+    bool pos_in = (__which & ios::in) != 0;
+    bool pos_out = (__which & ios::out) != 0;
+    if (pos_in || pos_out)
+    {
+        if (!((pos_in && gptr() == nullptr) || (pos_out && pptr() == nullptr)))
+        {
+            off_type newoff = __sp;
+            char* seekhigh = epptr() ? epptr() : egptr();
+            if (0 <= newoff && newoff <= seekhigh - eback())
+            {
+                char* newpos = eback() + newoff;
+                if (pos_in)
+                    setg(eback(), newpos, _VSTD::max(newpos, egptr()));
+                if (pos_out)
+                {
+                    // min(pbase, newpos), newpos, epptr()
+                    off_type temp = epptr() - newpos;
+                    setp(min(pbase(), newpos), epptr());
+                    __pbump((epptr() - pbase()) - temp);
+                }
+                __p = newoff;
+            }
+        }
+    }
+    return pos_type(__p);
+}
+
+istrstream::~istrstream()
+{
+}
+
+ostrstream::~ostrstream()
+{
+}
+
+strstream::~strstream()
+{
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
diff --git a/app/src/main/cpp/libcxx/src/support/ibm/mbsnrtowcs.cpp b/app/src/main/cpp/libcxx/src/support/ibm/mbsnrtowcs.cpp
new file mode 100644
index 0000000..d7220fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/ibm/mbsnrtowcs.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef> // size_t
+#include <cwchar>  // mbstate_t
+#include <limits.h> // MB_LEN_MAX
+#include <string.h> // wmemcpy
+
+// Returns the number of wide characters found in the multi byte sequence `src`
+// (of `src_size_bytes`), that fit in the buffer `dst` (of `max_dest_chars`
+// elements size). The count returned excludes the null terminator.
+// When `dst` is NULL, no characters are copied to `dst`.
+// Returns (size_t) -1 when an invalid sequence is encountered.
+// Leaves *`src` pointing to the next character to convert or NULL
+// if a null character was converted from *`src`.
+_LIBCPP_FUNC_VIS
+size_t mbsnrtowcs(wchar_t *__restrict dst, const char **__restrict src,
+                   size_t src_size_bytes, size_t max_dest_chars,
+                   mbstate_t *__restrict ps) {
+  const size_t terminated_sequence = static_cast<size_t>(0);
+  const size_t invalid_sequence = static_cast<size_t>(-1);
+  const size_t incomplete_sequence = static_cast<size_t>(-2);
+
+  size_t source_converted;
+  size_t dest_converted;
+  size_t result = 0;
+
+  // If `dst` is null then `max_dest_chars` should be ignored according to the
+  // standard. Setting `max_dest_chars` to a large value has this effect.
+  if (dst == nullptr)
+    max_dest_chars = static_cast<size_t>(-1);
+
+  for (dest_converted = source_converted = 0;
+       source_converted < src_size_bytes && (!dst || dest_converted < max_dest_chars);
+       ++dest_converted, source_converted += result) {
+    // Converts one multi byte character.
+    // If result (char_size) is greater than 0, it's the size in bytes of that character.
+    // If result (char_size) is zero, it indicates that the null character has been found.
+    // Otherwise, it's an error and errno may be set.
+    size_t source_remaining = src_size_bytes - source_converted;
+    size_t dest_remaining = max_dest_chars - dest_converted;
+
+    if (dst == nullptr) {
+      result = mbrtowc(NULL, *src + source_converted, source_remaining, ps);
+    } else if (dest_remaining >= source_remaining) {
+      // dst has enough space to translate in-place.
+      result = mbrtowc(dst + dest_converted, *src + source_converted, source_remaining, ps);
+    } else {
+      /*
+      * dst may not have enough space, so use a temporary buffer.
+      *
+      * We need to save a copy of the conversion state
+      * here so we can restore it if the multibyte
+      * character is too long for the buffer.
+      */
+      wchar_t buff[MB_LEN_MAX];
+      mbstate_t mbstate_tmp;
+
+      if (ps != nullptr)
+        mbstate_tmp = *ps;
+      result = mbrtowc(buff, *src + source_converted, source_remaining, ps);
+
+      if (result > dest_remaining) {
+        // Multi-byte sequence for character won't fit.
+        if (ps != nullptr)
+          *ps = mbstate_tmp;
+        break;
+      } else {
+        // The buffer was used, so we need copy the translation to dst.
+        wmemcpy(dst, buff, result);
+      }
+    }
+
+    // Don't do anything to change errno from here on.
+    if (result == invalid_sequence || result == terminated_sequence || result == incomplete_sequence) {
+      break;
+    }
+  }
+
+  if (dst) {
+    if (result == terminated_sequence)
+      *src = NULL;
+    else
+      *src += source_converted;
+  }
+  if (result == invalid_sequence)
+    return invalid_sequence;
+
+  return dest_converted;
+}
diff --git a/app/src/main/cpp/libcxx/src/support/ibm/wcsnrtombs.cpp b/app/src/main/cpp/libcxx/src/support/ibm/wcsnrtombs.cpp
new file mode 100644
index 0000000..66395bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/ibm/wcsnrtombs.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cwchar>  // mbstate_t
+#include <limits.h> // MB_LEN_MAX
+#include <stdlib.h> // MB_CUR_MAX, size_t
+#include <string.h> // memcpy
+
+// Converts `max_source_chars` from the wide character buffer pointer to by *`src`,
+// into the multi byte character sequence buffer stored at `dst`, which must be
+// `dst_size_bytes` bytes in size. Returns the number of bytes in the sequence
+// converted from *src, excluding the null terminator.
+// Returns (size_t) -1 if an error occurs and sets errno.
+// If `dst` is NULL, `dst_size_bytes` is ignored and no bytes are copied to `dst`.
+_LIBCPP_FUNC_VIS
+size_t wcsnrtombs(char *__restrict dst, const wchar_t **__restrict src,
+                   size_t max_source_chars, size_t dst_size_bytes,
+                   mbstate_t *__restrict ps) {
+
+  const size_t invalid_wchar = static_cast<size_t>(-1);
+
+  size_t source_converted;
+  size_t dest_converted;
+  size_t result = 0;
+
+  // If `dst` is null then `dst_size_bytes` should be ignored according to the
+  // standard. Setting dst_size_bytes to a large value has this effect.
+  if (dst == nullptr)
+    dst_size_bytes = static_cast<size_t>(-1);
+
+  for (dest_converted = source_converted = 0;
+       source_converted < max_source_chars && (!dst || dest_converted < dst_size_bytes);
+       ++source_converted, dest_converted += result) {
+    wchar_t c = (*src)[source_converted];
+    size_t dest_remaining = dst_size_bytes - dest_converted;
+
+    if (dst == nullptr) {
+      result = wcrtomb(NULL, c, ps);
+    } else if (dest_remaining >= static_cast<size_t>(MB_CUR_MAX)) {
+      // dst has enough space to translate in-place.
+      result = wcrtomb(dst + dest_converted, c, ps);
+    } else {
+      /*
+      * dst may not have enough space, so use a temporary buffer.
+      *
+      * We need to save a copy of the conversion state
+      * here so we can restore it if the multibyte
+      * character is too long for the buffer.
+      */
+      char buff[MB_LEN_MAX];
+      mbstate_t mbstate_tmp;
+
+      if (ps != nullptr)
+        mbstate_tmp = *ps;
+      result = wcrtomb(buff, c, ps);
+
+      if (result > dest_remaining) {
+        // Multi-byte sequence for character won't fit.
+        if (ps != nullptr)
+          *ps = mbstate_tmp;
+        if (result != invalid_wchar)
+          break;
+      } else {
+        // The buffer was used, so we need copy the translation to dst.
+        memcpy(dst, buff, result);
+      }
+    }
+
+    // result (char_size) contains the size of the multi-byte-sequence converted.
+    // Otherwise, result (char_size) is (size_t) -1 and wcrtomb() sets the errno.
+    if (result == invalid_wchar) {
+      if (dst)
+        *src = *src + source_converted;
+      return invalid_wchar;
+    }
+
+    if (c == L'\0') {
+      if (dst)
+        *src = NULL;
+      return dest_converted;
+    }
+  }
+
+  if (dst)
+    *src = *src + source_converted;
+
+  return dest_converted;
+}
diff --git a/app/src/main/cpp/libcxx/src/support/ibm/xlocale_zos.cpp b/app/src/main/cpp/libcxx/src/support/ibm/xlocale_zos.cpp
new file mode 100644
index 0000000..a3f9558
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/ibm/xlocale_zos.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__assert>
+#include <__support/ibm/xlocale.h>
+#include <sstream>
+#include <vector>
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+locale_t newlocale(int category_mask, const char* locale, locale_t base) {
+  // Maintain current locale name(s) to restore later.
+  std::string current_loc_name(setlocale(LC_ALL, 0));
+
+  // Check for errors.
+  if (category_mask == LC_ALL_MASK && setlocale(LC_ALL, locale) == NULL) {
+    errno = EINVAL;
+    return (locale_t)0;
+  } else {
+    for (int _Cat = 0; _Cat <= _LC_MAX; ++_Cat) {
+      if ((_CATMASK(_Cat) & category_mask) != 0 && setlocale(_Cat, locale) == NULL) {
+        setlocale(LC_ALL, current_loc_name.c_str());
+        errno = EINVAL;
+        return (locale_t)0;
+      }
+    }
+  }
+
+  // Create new locale.
+  locale_t newloc = new locale_struct();
+
+  if (base) {
+    if (category_mask != LC_ALL_MASK) {
+      // Copy base when it will not be overwritten.
+      memcpy(newloc, base, sizeof (locale_struct));
+      newloc->category_mask = category_mask | base->category_mask;
+    }
+    delete base;
+  } else {
+    newloc->category_mask = category_mask;
+  }
+
+  if (category_mask & LC_COLLATE_MASK)
+    newloc->lc_collate = locale;
+  if (category_mask & LC_CTYPE_MASK)
+    newloc->lc_ctype = locale;
+  if (category_mask & LC_MONETARY_MASK)
+    newloc->lc_monetary = locale;
+  if (category_mask & LC_NUMERIC_MASK)
+    newloc->lc_numeric = locale;
+  if (category_mask & LC_TIME_MASK)
+    newloc->lc_time = locale;
+  if (category_mask & LC_MESSAGES_MASK)
+    newloc->lc_messages = locale;
+
+  // Restore current locale.
+  setlocale(LC_ALL, current_loc_name.c_str());
+  return (locale_t)newloc;
+}
+
+void freelocale(locale_t locobj) {
+  delete locobj;
+}
+
+locale_t uselocale(locale_t newloc) {
+  // Maintain current locale name(s).
+  std::string current_loc_name(setlocale(LC_ALL, 0));
+
+  if (newloc) {
+    // Set locales and check for errors.
+    bool is_error =
+      (newloc->category_mask & LC_COLLATE_MASK &&
+        setlocale(LC_COLLATE, newloc->lc_collate.c_str()) == NULL) ||
+      (newloc->category_mask & LC_CTYPE_MASK &&
+        setlocale(LC_CTYPE, newloc->lc_ctype.c_str()) == NULL) ||
+      (newloc->category_mask & LC_MONETARY_MASK &&
+        setlocale(LC_MONETARY, newloc->lc_monetary.c_str()) == NULL) ||
+      (newloc->category_mask & LC_NUMERIC_MASK &&
+        setlocale(LC_NUMERIC, newloc->lc_numeric.c_str()) == NULL) ||
+      (newloc->category_mask & LC_TIME_MASK &&
+        setlocale(LC_TIME, newloc->lc_time.c_str()) == NULL) ||
+      (newloc->category_mask & LC_MESSAGES_MASK &&
+        setlocale(LC_MESSAGES, newloc->lc_messages.c_str()) == NULL);
+
+    if (is_error) {
+      setlocale(LC_ALL, current_loc_name.c_str());
+      errno = EINVAL;
+      return (locale_t)0;
+    }
+  }
+
+  // Construct and return previous locale.
+  locale_t previous_loc = new locale_struct();
+
+  // current_loc_name might be a comma-separated locale name list.
+  if (current_loc_name.find(',') != std::string::npos) {
+    // Tokenize locale name list.
+    const char delimiter = ',';
+    std::vector<std::string> tokenized;
+    std::stringstream ss(current_loc_name);
+    std::string s;
+
+    while (std::getline(ss, s, delimiter)) {
+        tokenized.push_back(s);
+    }
+
+    _LIBCPP_ASSERT(tokenized.size() >= _NCAT, "locale-name list is too short");
+
+    previous_loc->lc_collate = tokenized[LC_COLLATE];
+    previous_loc->lc_ctype = tokenized[LC_CTYPE];
+    previous_loc->lc_monetary = tokenized[LC_MONETARY];
+    previous_loc->lc_numeric = tokenized[LC_NUMERIC];
+    previous_loc->lc_time = tokenized[LC_TIME];
+    // Skip LC_TOD.
+    previous_loc->lc_messages = tokenized[LC_MESSAGES];
+  } else {
+    previous_loc->lc_collate = current_loc_name;
+    previous_loc->lc_ctype = current_loc_name;
+    previous_loc->lc_monetary = current_loc_name;
+    previous_loc->lc_numeric = current_loc_name;
+    previous_loc->lc_time = current_loc_name;
+    previous_loc->lc_messages = current_loc_name;
+  }
+
+  previous_loc->category_mask = LC_ALL_MASK;
+  return previous_loc;
+}
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_fallback.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_fallback.ipp
new file mode 100644
index 0000000..ade9335
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_fallback.ipp
@@ -0,0 +1,158 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstdio>
+
+namespace std {
+
+static constinit std::terminate_handler  __terminate_handler = nullptr;
+static constinit std::unexpected_handler __unexpected_handler = nullptr;
+
+// libcxxrt provides implementations of these functions itself.
+unexpected_handler
+set_unexpected(unexpected_handler func) noexcept
+{
+  return __libcpp_atomic_exchange(&__unexpected_handler, func);
+}
+
+unexpected_handler
+get_unexpected() noexcept
+{
+  return __libcpp_atomic_load(&__unexpected_handler);
+}
+
+_LIBCPP_NORETURN
+void unexpected()
+{
+    (*get_unexpected())();
+    // unexpected handler should not return
+    terminate();
+}
+
+terminate_handler
+set_terminate(terminate_handler func) noexcept
+{
+  return __libcpp_atomic_exchange(&__terminate_handler, func);
+}
+
+terminate_handler
+get_terminate() noexcept
+{
+  return __libcpp_atomic_load(&__terminate_handler);
+}
+
+_LIBCPP_NORETURN
+void
+terminate() noexcept
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        (*get_terminate())();
+        // handler should not return
+        fprintf(stderr, "terminate_handler unexpectedly returned\n");
+        ::abort();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+        // handler should not throw exception
+        fprintf(stderr, "terminate_handler unexpectedly threw an exception\n");
+        ::abort();
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+bool uncaught_exception() noexcept { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() noexcept
+{
+#warning uncaught_exception not yet implemented
+  fprintf(stderr, "uncaught_exceptions not yet implemented\n");
+  ::abort();
+}
+
+
+exception::~exception() noexcept
+{
+}
+
+const char* exception::what() const noexcept
+{
+  return "std::exception";
+}
+
+bad_exception::~bad_exception() noexcept
+{
+}
+
+const char* bad_exception::what() const noexcept
+{
+  return "std::bad_exception";
+}
+
+
+bad_alloc::bad_alloc() noexcept
+{
+}
+
+bad_alloc::~bad_alloc() noexcept
+{
+}
+
+const char*
+bad_alloc::what() const noexcept
+{
+    return "std::bad_alloc";
+}
+
+bad_array_new_length::bad_array_new_length() noexcept
+{
+}
+
+bad_array_new_length::~bad_array_new_length() noexcept
+{
+}
+
+const char*
+bad_array_new_length::what() const noexcept
+{
+    return "bad_array_new_length";
+}
+
+bad_cast::bad_cast() noexcept
+{
+}
+
+bad_typeid::bad_typeid() noexcept
+{
+}
+
+bad_cast::~bad_cast() noexcept
+{
+}
+
+const char*
+bad_cast::what() const noexcept
+{
+  return "std::bad_cast";
+}
+
+bad_typeid::~bad_typeid() noexcept
+{
+}
+
+const char*
+bad_typeid::what() const noexcept
+{
+  return "std::bad_typeid";
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_glibcxx.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_glibcxx.ipp
new file mode 100644
index 0000000..e478ccb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_glibcxx.ipp
@@ -0,0 +1,32 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __GLIBCXX__
+#error header can only be used when targeting libstdc++ or libsupc++
+#endif
+
+namespace std {
+
+bad_alloc::bad_alloc() noexcept
+{
+}
+
+bad_array_new_length::bad_array_new_length() noexcept
+{
+}
+
+bad_cast::bad_cast() noexcept
+{
+}
+
+bad_typeid::bad_typeid() noexcept
+{
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_libcxxabi.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_libcxxabi.ipp
new file mode 100644
index 0000000..ee15e43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_libcxxabi.ipp
@@ -0,0 +1,27 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPPABI_VERSION
+#error this header can only be used with libc++abi
+#endif
+
+namespace std {
+
+bool uncaught_exception() noexcept { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() noexcept
+{
+# if _LIBCPPABI_VERSION > 1001
+    return __cxa_uncaught_exceptions();
+# else
+    return __cxa_uncaught_exception() ? 1 : 0;
+# endif
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_libcxxrt.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_libcxxrt.ipp
new file mode 100644
index 0000000..62aa322
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_libcxxrt.ipp
@@ -0,0 +1,25 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXXRT
+#error this header may only be used when targeting libcxxrt
+#endif
+
+namespace std {
+
+bad_exception::~bad_exception() noexcept
+{
+}
+
+const char* bad_exception::what() const noexcept
+{
+  return "std::bad_exception";
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_msvc.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_msvc.ipp
new file mode 100644
index 0000000..7e36c70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_msvc.ipp
@@ -0,0 +1,163 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_ABI_MICROSOFT
+#error this header can only be used when targeting the MSVC ABI
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+extern "C" {
+typedef void (__cdecl* terminate_handler)();
+_LIBCPP_CRT_FUNC terminate_handler __cdecl set_terminate(
+    terminate_handler _NewTerminateHandler) throw();
+_LIBCPP_CRT_FUNC terminate_handler __cdecl _get_terminate();
+
+typedef void (__cdecl* unexpected_handler)();
+unexpected_handler __cdecl set_unexpected(
+    unexpected_handler _NewUnexpectedHandler) throw();
+unexpected_handler __cdecl _get_unexpected();
+
+int __cdecl __uncaught_exceptions();
+}
+
+namespace std {
+
+unexpected_handler
+set_unexpected(unexpected_handler func) noexcept {
+  return ::set_unexpected(func);
+}
+
+unexpected_handler get_unexpected() noexcept {
+  return ::_get_unexpected();
+}
+
+_LIBCPP_NORETURN
+void unexpected() {
+    (*get_unexpected())();
+    // unexpected handler should not return
+    terminate();
+}
+
+terminate_handler set_terminate(terminate_handler func) noexcept {
+  return ::set_terminate(func);
+}
+
+terminate_handler get_terminate() noexcept {
+  return ::_get_terminate();
+}
+
+_LIBCPP_NORETURN
+void terminate() noexcept
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif // _LIBCPP_NO_EXCEPTIONS
+        (*get_terminate())();
+        // handler should not return
+        fprintf(stderr, "terminate_handler unexpectedly returned\n");
+        ::abort();
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+        // handler should not throw exception
+        fprintf(stderr, "terminate_handler unexpectedly threw an exception\n");
+        ::abort();
+    }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+bool uncaught_exception() noexcept { return uncaught_exceptions() > 0; }
+
+int uncaught_exceptions() noexcept {
+    return __uncaught_exceptions();
+}
+
+#if !defined(_LIBCPP_ABI_VCRUNTIME)
+bad_cast::bad_cast() noexcept
+{
+}
+
+bad_cast::~bad_cast() noexcept
+{
+}
+
+const char *
+bad_cast::what() const noexcept
+{
+  return "std::bad_cast";
+}
+
+bad_typeid::bad_typeid() noexcept
+{
+}
+
+bad_typeid::~bad_typeid() noexcept
+{
+}
+
+const char *
+bad_typeid::what() const noexcept
+{
+  return "std::bad_typeid";
+}
+
+exception::~exception() noexcept
+{
+}
+
+const char* exception::what() const noexcept
+{
+  return "std::exception";
+}
+
+
+bad_exception::~bad_exception() noexcept
+{
+}
+
+const char* bad_exception::what() const noexcept
+{
+  return "std::bad_exception";
+}
+
+
+bad_alloc::bad_alloc() noexcept
+{
+}
+
+bad_alloc::~bad_alloc() noexcept
+{
+}
+
+const char*
+bad_alloc::what() const noexcept
+{
+    return "std::bad_alloc";
+}
+
+bad_array_new_length::bad_array_new_length() noexcept
+{
+}
+
+bad_array_new_length::~bad_array_new_length() noexcept
+{
+}
+
+const char*
+bad_array_new_length::what() const noexcept
+{
+    return "bad_array_new_length";
+}
+#endif // !_LIBCPP_ABI_VCRUNTIME
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
new file mode 100644
index 0000000..33aa945
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
@@ -0,0 +1,73 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef HAVE_DEPENDENT_EH_ABI
+#error this header may only be used with libc++abi or libcxxrt
+#endif
+
+namespace std {
+
+exception_ptr::~exception_ptr() noexcept {
+  __cxa_decrement_exception_refcount(__ptr_);
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) noexcept
+    : __ptr_(other.__ptr_)
+{
+    __cxa_increment_exception_refcount(__ptr_);
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
+{
+    if (__ptr_ != other.__ptr_)
+    {
+        __cxa_increment_exception_refcount(other.__ptr_);
+        __cxa_decrement_exception_refcount(__ptr_);
+        __ptr_ = other.__ptr_;
+    }
+    return *this;
+}
+
+nested_exception::nested_exception() noexcept
+    : __ptr_(current_exception())
+{
+}
+
+nested_exception::~nested_exception() noexcept
+{
+}
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+    if (__ptr_ == nullptr)
+        terminate();
+    rethrow_exception(__ptr_);
+}
+
+exception_ptr current_exception() noexcept
+{
+    // be nicer if there was a constructor that took a ptr, then
+    // this whole function would be just:
+    //    return exception_ptr(__cxa_current_primary_exception());
+    exception_ptr ptr;
+    ptr.__ptr_ = __cxa_current_primary_exception();
+    return ptr;
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+    __cxa_rethrow_primary_exception(p.__ptr_);
+    // if p.__ptr_ is NULL, above returns so we terminate
+    terminate();
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp
new file mode 100644
index 0000000..983a088
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_glibcxx.ipp
@@ -0,0 +1,77 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// libsupc++ does not implement the dependent EH ABI and the functionality
+// it uses to implement std::exception_ptr (which it declares as an alias of
+// std::__exception_ptr::exception_ptr) is not directly exported to clients. So
+// we have little choice but to hijack std::__exception_ptr::exception_ptr's
+// (which fortunately has the same layout as our std::exception_ptr) copy
+// constructor, assignment operator and destructor (which are part of its
+// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr)
+// function.
+
+namespace std {
+
+namespace __exception_ptr
+{
+
+struct exception_ptr
+{
+    void* __ptr_;
+
+    exception_ptr(const exception_ptr&) noexcept;
+    exception_ptr& operator=(const exception_ptr&) noexcept;
+    ~exception_ptr() noexcept;
+};
+
+}
+
+_LIBCPP_NORETURN void rethrow_exception(__exception_ptr::exception_ptr);
+
+exception_ptr::~exception_ptr() noexcept
+{
+    reinterpret_cast<__exception_ptr::exception_ptr*>(this)->~exception_ptr();
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) noexcept
+    : __ptr_(other.__ptr_)
+{
+    new (reinterpret_cast<void*>(this)) __exception_ptr::exception_ptr(
+        reinterpret_cast<const __exception_ptr::exception_ptr&>(other));
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
+{
+    *reinterpret_cast<__exception_ptr::exception_ptr*>(this) =
+        reinterpret_cast<const __exception_ptr::exception_ptr&>(other);
+    return *this;
+}
+
+nested_exception::nested_exception() noexcept
+    : __ptr_(current_exception())
+{
+}
+
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+    if (__ptr_ == nullptr)
+        terminate();
+    rethrow_exception(__ptr_);
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+    rethrow_exception(reinterpret_cast<__exception_ptr::exception_ptr&>(p));
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_msvc.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_msvc.ipp
new file mode 100644
index 0000000..9e7f392
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_msvc.ipp
@@ -0,0 +1,86 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+#include <stdlib.h>
+
+_LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrCreate(void*);
+_LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrDestroy(void*);
+_LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrCopy(void*, const void*);
+_LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrAssign(void*, const void*);
+_LIBCPP_CRT_FUNC bool __cdecl __ExceptionPtrCompare(const void*, const void*);
+_LIBCPP_CRT_FUNC bool __cdecl __ExceptionPtrToBool(const void*);
+_LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrSwap(void*, void*);
+_LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrCurrentException(void*);
+[[noreturn]] _LIBCPP_CRT_FUNC void __cdecl __ExceptionPtrRethrow(const void*);
+_LIBCPP_CRT_FUNC void __cdecl
+__ExceptionPtrCopyException(void*, const void*, const void*);
+
+namespace std {
+
+exception_ptr::exception_ptr() noexcept { __ExceptionPtrCreate(this); }
+exception_ptr::exception_ptr(nullptr_t) noexcept { __ExceptionPtrCreate(this); }
+
+exception_ptr::exception_ptr(const exception_ptr& __other) noexcept {
+  __ExceptionPtrCopy(this, &__other);
+}
+exception_ptr& exception_ptr::operator=(const exception_ptr& __other) noexcept {
+  __ExceptionPtrAssign(this, &__other);
+  return *this;
+}
+
+exception_ptr& exception_ptr::operator=(nullptr_t) noexcept {
+  exception_ptr dummy;
+  __ExceptionPtrAssign(this, &dummy);
+  return *this;
+}
+
+exception_ptr::~exception_ptr() noexcept { __ExceptionPtrDestroy(this); }
+
+exception_ptr::operator bool() const noexcept {
+  return __ExceptionPtrToBool(this);
+}
+
+bool operator==(const exception_ptr& __x, const exception_ptr& __y) noexcept {
+  return __ExceptionPtrCompare(&__x, &__y);
+}
+
+
+void swap(exception_ptr& lhs, exception_ptr& rhs) noexcept {
+  __ExceptionPtrSwap(&rhs, &lhs);
+}
+
+exception_ptr __copy_exception_ptr(void* __except, const void* __ptr) {
+  exception_ptr __ret = nullptr;
+  if (__ptr)
+    __ExceptionPtrCopyException(&__ret, __except, __ptr);
+  return __ret;
+}
+
+exception_ptr current_exception() noexcept {
+  exception_ptr __ret;
+  __ExceptionPtrCurrentException(&__ret);
+  return __ret;
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p) { __ExceptionPtrRethrow(&p); }
+
+nested_exception::nested_exception() noexcept : __ptr_(current_exception()) {}
+
+nested_exception::~nested_exception() noexcept {}
+
+_LIBCPP_NORETURN
+void nested_exception::rethrow_nested() const {
+  if (__ptr_ == nullptr)
+    terminate();
+  rethrow_exception(__ptr_);
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_unimplemented.ipp b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_unimplemented.ipp
new file mode 100644
index 0000000..9e8ec04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/exception_pointer_unimplemented.ipp
@@ -0,0 +1,79 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdio.h>
+#include <stdlib.h>
+
+namespace std {
+
+exception_ptr::~exception_ptr() noexcept
+{
+#  warning exception_ptr not yet implemented
+  fprintf(stderr, "exception_ptr not yet implemented\n");
+  ::abort();
+}
+
+exception_ptr::exception_ptr(const exception_ptr& other) noexcept
+    : __ptr_(other.__ptr_)
+{
+#  warning exception_ptr not yet implemented
+  fprintf(stderr, "exception_ptr not yet implemented\n");
+  ::abort();
+}
+
+exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
+{
+#  warning exception_ptr not yet implemented
+  fprintf(stderr, "exception_ptr not yet implemented\n");
+  ::abort();
+}
+
+nested_exception::nested_exception() noexcept
+    : __ptr_(current_exception())
+{
+}
+
+#if !defined(__GLIBCXX__)
+
+nested_exception::~nested_exception() noexcept
+{
+}
+
+#endif
+
+_LIBCPP_NORETURN
+void
+nested_exception::rethrow_nested() const
+{
+#  warning exception_ptr not yet implemented
+  fprintf(stderr, "exception_ptr not yet implemented\n");
+  ::abort();
+#if 0
+  if (__ptr_ == nullptr)
+      terminate();
+  rethrow_exception(__ptr_);
+#endif // FIXME
+}
+
+exception_ptr current_exception() noexcept
+{
+#  warning exception_ptr not yet implemented
+  fprintf(stderr, "exception_ptr not yet implemented\n");
+  ::abort();
+}
+
+_LIBCPP_NORETURN
+void rethrow_exception(exception_ptr p)
+{
+#  warning exception_ptr not yet implemented
+  fprintf(stderr, "exception_ptr not yet implemented\n");
+  ::abort();
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/new_handler_fallback.ipp b/app/src/main/cpp/libcxx/src/support/runtime/new_handler_fallback.ipp
new file mode 100644
index 0000000..2ec4083
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/new_handler_fallback.ipp
@@ -0,0 +1,26 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+namespace std {
+
+static constinit std::new_handler __new_handler = nullptr;
+
+new_handler
+set_new_handler(new_handler handler) noexcept
+{
+    return __libcpp_atomic_exchange(&__new_handler, handler);
+}
+
+new_handler
+get_new_handler() noexcept
+{
+    return __libcpp_atomic_load(&__new_handler);
+}
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/stdexcept_default.ipp b/app/src/main/cpp/libcxx/src/support/runtime/stdexcept_default.ipp
new file mode 100644
index 0000000..99d3045
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/stdexcept_default.ipp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "../../include/refstring.h"
+
+/* For _LIBCPPABI_VERSION */
+#if !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) &&                           \
+    (defined(LIBCXX_BUILDING_LIBCXXABI) || defined(LIBCXXRT))
+#include <cxxabi.h>
+#endif
+
+static_assert(sizeof(std::__libcpp_refstring) == sizeof(const char*), "");
+
+namespace std // purposefully not using versioning namespace
+{
+
+logic_error::logic_error(const string& msg) : __imp_(msg.c_str()) {}
+
+logic_error::logic_error(const char* msg) : __imp_(msg) {}
+
+logic_error::logic_error(const logic_error& le) noexcept : __imp_(le.__imp_) {}
+
+logic_error& logic_error::operator=(const logic_error& le) noexcept {
+  __imp_ = le.__imp_;
+  return *this;
+}
+
+runtime_error::runtime_error(const string& msg) : __imp_(msg.c_str()) {}
+
+runtime_error::runtime_error(const char* msg) : __imp_(msg) {}
+
+runtime_error::runtime_error(const runtime_error& re) noexcept
+    : __imp_(re.__imp_) {}
+
+runtime_error& runtime_error::operator=(const runtime_error& re) noexcept {
+  __imp_ = re.__imp_;
+  return *this;
+}
+
+#if !defined(_LIBCPPABI_VERSION) && !defined(LIBSTDCXX)
+
+const char* logic_error::what() const noexcept { return __imp_.c_str(); }
+
+const char* runtime_error::what() const noexcept { return __imp_.c_str(); }
+
+logic_error::~logic_error() noexcept {}
+domain_error::~domain_error() noexcept {}
+invalid_argument::~invalid_argument() noexcept {}
+length_error::~length_error() noexcept {}
+out_of_range::~out_of_range() noexcept {}
+
+runtime_error::~runtime_error() noexcept {}
+range_error::~range_error() noexcept {}
+overflow_error::~overflow_error() noexcept {}
+underflow_error::~underflow_error() noexcept {}
+
+#endif
+
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/runtime/stdexcept_vcruntime.ipp b/app/src/main/cpp/libcxx/src/support/runtime/stdexcept_vcruntime.ipp
new file mode 100644
index 0000000..db9097d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/runtime/stdexcept_vcruntime.ipp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_ABI_VCRUNTIME
+#error This file may only be used when deferring to vcruntime
+#endif
+
+namespace std {
+logic_error::logic_error(std::string const& s) : exception(s.c_str()) {}
+runtime_error::runtime_error(std::string const& s) : exception(s.c_str()) {}
+} // namespace std
diff --git a/app/src/main/cpp/libcxx/src/support/solaris/README b/app/src/main/cpp/libcxx/src/support/solaris/README
new file mode 100644
index 0000000..89c887a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/solaris/README
@@ -0,0 +1,4 @@
+This directory contains a partial implementation of the xlocale APIs for
+Solaris.  Some portions are lifted from FreeBSD libc, and so are covered by a
+2-clause BSD license instead of the MIT/UUIC license that the rest of libc++ is
+distributed under.
diff --git a/app/src/main/cpp/libcxx/src/support/solaris/mbsnrtowcs.inc b/app/src/main/cpp/libcxx/src/support/solaris/mbsnrtowcs.inc
new file mode 100644
index 0000000..0740452
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/solaris/mbsnrtowcs.inc
@@ -0,0 +1,76 @@
+
+
+/*-
+ * As noted in the source, some portions of this implementation are copied from
+ * FreeBSD libc.  These are covered by the following copyright:
+ *
+ * Copyright (c) 2002-2004 Tim J. Robbins.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+size_t
+mbsnrtowcs_l(wchar_t * __restrict dst, const char ** __restrict src,
+    size_t nms, size_t len, mbstate_t * __restrict ps, locale_t loc)
+{
+  const char *s;
+  size_t nchr;
+  wchar_t wc;
+  size_t nb;
+  FIX_LOCALE(loc);
+
+  s = *src;
+  nchr = 0;
+
+  if (dst == NULL) {
+    for (;;) {
+      if ((nb = mbrtowc_l(&wc, s, nms, ps, loc)) == (size_t)-1)
+        /* Invalid sequence - mbrtowc() sets errno. */
+        return ((size_t)-1);
+      else if (nb == 0 || nb == (size_t)-2)
+        return (nchr);
+      s += nb;
+      nms -= nb;
+      nchr++;
+    }
+    /*NOTREACHED*/
+  }
+
+  while (len-- > 0) {
+    if ((nb = mbrtowc_l(dst, s, nms, ps, loc)) == (size_t)-1) {
+      *src = s;
+      return ((size_t)-1);
+    } else if (nb == (size_t)-2) {
+      *src = s + nms;
+      return (nchr);
+    } else if (nb == 0) {
+      *src = NULL;
+      return (nchr);
+    }
+    s += nb;
+    nms -= nb;
+    nchr++;
+    dst++;
+  }
+  *src = s;
+  return (nchr);
+}
diff --git a/app/src/main/cpp/libcxx/src/support/solaris/wcsnrtombs.inc b/app/src/main/cpp/libcxx/src/support/solaris/wcsnrtombs.inc
new file mode 100644
index 0000000..239079e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/solaris/wcsnrtombs.inc
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 2002-2004 Tim J. Robbins.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+size_t
+wcsnrtombs_l(char * __restrict dst, const wchar_t ** __restrict src,
+    size_t nwc, size_t len, mbstate_t * __restrict ps, locale_t loc)
+{
+  FIX_LOCALE(loc);
+  mbstate_t mbsbak;
+  char buf[MB_CUR_MAX_L(loc)];
+  const wchar_t *s;
+  size_t nbytes;
+  size_t nb;
+
+  s = *src;
+  nbytes = 0;
+
+  if (dst == NULL) {
+    while (nwc-- > 0) {
+      if ((nb = wcrtomb_l(buf, *s, ps, loc)) == (size_t)-1)
+        /* Invalid character - wcrtomb() sets errno. */
+        return ((size_t)-1);
+      else if (*s == L'\0')
+        return (nbytes + nb - 1);
+      s++;
+      nbytes += nb;
+    }
+    return (nbytes);
+  }
+
+  while (len > 0 && nwc-- > 0) {
+    if (len > (size_t)MB_CUR_MAX_L(loc)) {
+      /* Enough space to translate in-place. */
+      if ((nb = wcrtomb_l(dst, *s, ps, loc)) == (size_t)-1) {
+        *src = s;
+        return ((size_t)-1);
+      }
+    } else {
+      /*
+       * May not be enough space; use temp. buffer.
+       *
+       * We need to save a copy of the conversion state
+       * here so we can restore it if the multibyte
+       * character is too long for the buffer.
+       */
+      mbsbak = *ps;
+      if ((nb = wcrtomb_l(buf, *s, ps, loc)) == (size_t)-1) {
+        *src = s;
+        return ((size_t)-1);
+      }
+      if (nb > (int)len) {
+        /* MB sequence for character won't fit. */
+        *ps = mbsbak;
+        break;
+      }
+      memcpy(dst, buf, nb);
+    }
+    if (*s == L'\0') {
+      *src = NULL;
+      return (nbytes + nb - 1);
+    }
+    s++;
+    dst += nb;
+    len -= nb;
+    nbytes += nb;
+  }
+  *src = s;
+  return (nbytes);
+}
diff --git a/app/src/main/cpp/libcxx/src/support/solaris/xlocale.cpp b/app/src/main/cpp/libcxx/src/support/solaris/xlocale.cpp
new file mode 100644
index 0000000..d25adcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/solaris/xlocale.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifdef __sun__
+
+#include "__support/solaris/xlocale.h"
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/localedef.h>
+
+extern "C" {
+
+int isxdigit_l(int __c, locale_t __l) {
+    return isxdigit(__c);
+}
+
+int iswxdigit_l(wint_t __c, locale_t __l) {
+    return isxdigit(__c);
+}
+
+// FIXME: This disregards the locale, which is Very Wrong
+#define vsnprintf_l(__s, __n, __l, __format, __va)  \
+    vsnprintf(__s, __n, __format, __va)
+
+int snprintf_l(char *__s, size_t __n, locale_t __l, const char *__format, ...)
+{
+  va_list __va;
+  va_start(__va, __format);
+  int __res = vsnprintf_l(__s, __n , __l, __format, __va);
+  va_end(__va);
+  return __res;
+}
+
+int asprintf_l(char **__s, locale_t __l, const char *__format, ...) {
+  va_list __va;
+  va_start(__va, __format);
+  // FIXME:
+  int __res = vasprintf(__s, __format, __va);
+  va_end(__va);
+  return __res;
+}
+
+int sscanf_l(const char *__s, locale_t __l, const char *__format, ...) {
+  va_list __va;
+  va_start(__va, __format);
+  // FIXME:
+  int __res = vsscanf(__s, __format, __va);
+  va_end(__va);
+  return __res;
+}
+
+size_t mbrtowc_l(wchar_t *__pwc, const char *__pmb,
+                 size_t __max, mbstate_t *__ps, locale_t __loc) {
+  return mbrtowc(__pwc, __pmb, __max, __ps);
+}
+
+struct lconv *localeconv_l(locale_t __l) {
+  return localeconv();
+}
+
+};
+
+#endif // __sun__
diff --git a/app/src/main/cpp/libcxx/src/support/win32/locale_win32.cpp b/app/src/main/cpp/libcxx/src/support/win32/locale_win32.cpp
new file mode 100644
index 0000000..67f4d13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/win32/locale_win32.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <locale>
+#include <cstdarg> // va_start, va_end
+#include <memory>
+#include <type_traits>
+
+int __libcpp_vasprintf(char **sptr, const char *__restrict fmt, va_list ap);
+
+using std::__libcpp_locale_guard;
+
+// FIXME: base currently unused. Needs manual work to construct the new locale
+locale_t newlocale( int mask, const char * locale, locale_t /*base*/ )
+{
+    return {_create_locale( LC_ALL, locale ), locale};
+}
+
+decltype(MB_CUR_MAX) MB_CUR_MAX_L( locale_t __l )
+{
+#if defined(_LIBCPP_MSVCRT)
+  return ___mb_cur_max_l_func(__l);
+#else
+  __libcpp_locale_guard __current(__l);
+  return MB_CUR_MAX;
+#endif
+}
+
+lconv *localeconv_l( locale_t &loc )
+{
+    __libcpp_locale_guard __current(loc);
+    lconv *lc = localeconv();
+    if (!lc)
+        return lc;
+    return loc.__store_lconv(lc);
+}
+size_t mbrlen_l( const char *__restrict s, size_t n,
+                 mbstate_t *__restrict ps, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return mbrlen( s, n, ps );
+}
+size_t mbsrtowcs_l( wchar_t *__restrict dst, const char **__restrict src,
+                    size_t len, mbstate_t *__restrict ps, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return mbsrtowcs( dst, src, len, ps );
+}
+size_t wcrtomb_l( char *__restrict s, wchar_t wc, mbstate_t *__restrict ps,
+                  locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return wcrtomb( s, wc, ps );
+}
+size_t mbrtowc_l( wchar_t *__restrict pwc, const char *__restrict s,
+                  size_t n, mbstate_t *__restrict ps, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return mbrtowc( pwc, s, n, ps );
+}
+size_t mbsnrtowcs_l( wchar_t *__restrict dst, const char **__restrict src,
+                     size_t nms, size_t len, mbstate_t *__restrict ps, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return mbsnrtowcs( dst, src, nms, len, ps );
+}
+size_t wcsnrtombs_l( char *__restrict dst, const wchar_t **__restrict src,
+                     size_t nwc, size_t len, mbstate_t *__restrict ps, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return wcsnrtombs( dst, src, nwc, len, ps );
+}
+wint_t btowc_l( int c, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return btowc( c );
+}
+int wctob_l( wint_t c, locale_t loc )
+{
+    __libcpp_locale_guard __current(loc);
+    return wctob( c );
+}
+
+int snprintf_l(char *ret, size_t n, locale_t loc, const char *format, ...)
+{
+    va_list ap;
+    va_start( ap, format );
+#if defined(_LIBCPP_MSVCRT)
+    // FIXME: Remove usage of internal CRT function and globals.
+    int result = __stdio_common_vsprintf(
+        _CRT_INTERNAL_LOCAL_PRINTF_OPTIONS | _CRT_INTERNAL_PRINTF_STANDARD_SNPRINTF_BEHAVIOR,
+        ret, n, format, loc, ap);
+#else
+    __libcpp_locale_guard __current(loc);
+    _LIBCPP_DIAGNOSTIC_PUSH
+    _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wformat-nonliteral")
+    int result = vsnprintf( ret, n, format, ap );
+    _LIBCPP_DIAGNOSTIC_POP
+#endif
+    va_end(ap);
+    return result;
+}
+
+int asprintf_l( char **ret, locale_t loc, const char *format, ... )
+{
+    va_list ap;
+    va_start( ap, format );
+    int result = vasprintf_l( ret, loc, format, ap );
+    va_end(ap);
+    return result;
+}
+int vasprintf_l( char **ret, locale_t loc, const char *format, va_list ap )
+{
+    __libcpp_locale_guard __current(loc);
+    return __libcpp_vasprintf( ret, format, ap );
+}
+
+#if !defined(_LIBCPP_MSVCRT)
+float strtof_l(const char* nptr, char** endptr, locale_t loc) {
+  __libcpp_locale_guard __current(loc);
+  return strtof(nptr, endptr);
+}
+
+long double strtold_l(const char* nptr, char** endptr, locale_t loc) {
+  __libcpp_locale_guard __current(loc);
+  return strtold(nptr, endptr);
+}
+#endif
+
+#if defined(__MINGW32__) && __MSVCRT_VERSION__ < 0x0800
+size_t strftime_l(char *ret, size_t n, const char *format, const struct tm *tm,
+                  locale_t loc) {
+  __libcpp_locale_guard __current(loc);
+  return strftime(ret, n, format, tm);
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/src/support/win32/support.cpp b/app/src/main/cpp/libcxx/src/support/win32/support.cpp
new file mode 100644
index 0000000..dbec408
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/win32/support.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstdarg> // va_start, va_end
+#include <cstddef> // size_t
+#include <cstdlib> // malloc
+#include <cstdio>  // vsprintf, vsnprintf
+#include <cstring> // strcpy, wcsncpy
+#include <cwchar>  // mbstate_t
+
+
+// Like sprintf, but when return value >= 0 it returns
+// a pointer to a malloc'd string in *sptr.
+// If return >= 0, use free to delete *sptr.
+int __libcpp_vasprintf( char **sptr, const char *__restrict format, va_list ap )
+{
+    *sptr = NULL;
+    // Query the count required.
+    va_list ap_copy;
+    va_copy(ap_copy, ap);
+    _LIBCPP_DIAGNOSTIC_PUSH
+    _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wformat-nonliteral")
+    int count = vsnprintf( NULL, 0, format, ap_copy );
+    _LIBCPP_DIAGNOSTIC_POP
+    va_end(ap_copy);
+    if (count < 0)
+        return count;
+    size_t buffer_size = static_cast<size_t>(count) + 1;
+    char* p = static_cast<char*>(malloc(buffer_size));
+    if ( ! p )
+        return -1;
+    // If we haven't used exactly what was required, something is wrong.
+    // Maybe bug in vsnprintf. Report the error and return.
+    _LIBCPP_DIAGNOSTIC_PUSH
+    _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wformat-nonliteral")
+    if (vsnprintf(p, buffer_size, format, ap) != count) {
+    _LIBCPP_DIAGNOSTIC_POP
+        free(p);
+        return -1;
+    }
+    // All good. This is returning memory to the caller not freeing it.
+    *sptr = p;
+    return count;
+}
+
+// Returns >= 0: the number of wide characters found in the
+// multi byte sequence src (of src_size_bytes), that fit in the buffer dst
+// (of max_dest_chars elements size). The count returned excludes the
+// null terminator. When dst is NULL, no characters are copied
+// and no "out" parameters are updated.
+// Returns (size_t) -1: an incomplete sequence encountered.
+// Leaves *src pointing the next character to convert or NULL
+// if a null character was converted from *src.
+size_t mbsnrtowcs( wchar_t *__restrict dst, const char **__restrict src,
+                   size_t src_size_bytes, size_t max_dest_chars, mbstate_t *__restrict ps )
+{
+    const size_t terminated_sequence = static_cast<size_t>(0);
+    //const size_t invalid_sequence = static_cast<size_t>(-1);
+    const size_t incomplete_sequence = static_cast< size_t>(-2);
+
+    size_t dest_converted = 0;
+    size_t source_converted = 0;
+    size_t source_remaining = src_size_bytes;
+    size_t result = 0;
+    bool have_result = false;
+
+    // If dst is null then max_dest_chars should be ignored according to the
+    // standard.  Setting max_dest_chars to a large value has this effect.
+    if (!dst)
+        max_dest_chars = static_cast<size_t>(-1);
+
+    while ( source_remaining ) {
+        if ( dst && dest_converted >= max_dest_chars )
+            break;
+        // Converts one multi byte character.
+        // if result > 0, it's the size in bytes of that character.
+        // othewise if result is zero it indicates the null character has been found.
+        // otherwise it's an error and errno may be set.
+        size_t char_size = mbrtowc( dst ? dst + dest_converted : NULL, *src + source_converted, source_remaining, ps );
+        // Don't do anything to change errno from here on.
+        if ( char_size > 0 ) {
+            source_remaining -= char_size;
+            source_converted += char_size;
+            ++dest_converted;
+            continue;
+        }
+        result = char_size;
+        have_result = true;
+        break;
+    }
+    if ( dst ) {
+        if ( have_result && result == terminated_sequence )
+            *src = NULL;
+        else
+            *src += source_converted;
+    }
+    if ( have_result && result != terminated_sequence && result != incomplete_sequence )
+        return static_cast<size_t>(-1);
+
+    return dest_converted;
+}
+
+// Converts max_source_chars from the wide character buffer pointer to by *src,
+// into the multi byte character sequence buffer stored at dst which must be
+// dst_size_bytes bytes in size.
+// Returns >= 0: the number of bytes in the sequence
+// converted from *src, excluding the null terminator.
+// Returns size_t(-1) if an error occurs, also sets errno.
+// If dst is NULL dst_size_bytes is ignored and no bytes are copied to dst
+// and no "out" parameters are updated.
+size_t wcsnrtombs( char *__restrict dst, const wchar_t **__restrict src,
+                   size_t max_source_chars, size_t dst_size_bytes, mbstate_t *__restrict ps )
+{
+    //const size_t invalid_sequence = static_cast<size_t>(-1);
+
+    size_t source_converted = 0;
+    size_t dest_converted = 0;
+    size_t dest_remaining = dst_size_bytes;
+    size_t char_size = 0;
+    const errno_t no_error = ( errno_t) 0;
+    errno_t result = ( errno_t ) 0;
+    bool have_result = false;
+    bool terminator_found = false;
+
+    // If dst is null then dst_size_bytes should be ignored according to the
+    // standard.  Setting dest_remaining to a large value has this effect.
+    if (!dst)
+        dest_remaining = static_cast<size_t>(-1);
+
+    while ( source_converted != max_source_chars ) {
+        if ( ! dest_remaining )
+            break;
+        wchar_t c = (*src)[source_converted];
+        if ( dst )
+            result = wcrtomb_s( &char_size, dst + dest_converted, dest_remaining, c, ps);
+        else
+            result = wcrtomb_s( &char_size, NULL, 0, c, ps);
+        // If result is zero there is no error and char_size contains the
+        // size of the multi-byte-sequence converted.
+        // Otherwise result indicates an errno type error.
+        if ( result == no_error ) {
+            if ( c == L'\0' ) {
+                terminator_found = true;
+                break;
+            }
+            ++source_converted;
+            if ( dst )
+                dest_remaining -= char_size;
+            dest_converted += char_size;
+            continue;
+        }
+        have_result = true;
+        break;
+    }
+    if ( dst ) {
+        if ( terminator_found )
+            *src = NULL;
+        else
+            *src = *src + source_converted;
+    }
+    if ( have_result && result != no_error ) {
+        errno = result;
+        return static_cast<size_t>(-1);
+    }
+
+    return dest_converted;
+}
diff --git a/app/src/main/cpp/libcxx/src/support/win32/thread_win32.cpp b/app/src/main/cpp/libcxx/src/support/win32/thread_win32.cpp
new file mode 100644
index 0000000..f2072b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/support/win32/thread_win32.cpp
@@ -0,0 +1,274 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__threading_support>
+#define NOMINMAX
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <process.h>
+#include <fibersapi.h>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+static_assert(sizeof(__libcpp_mutex_t) == sizeof(SRWLOCK), "");
+static_assert(alignof(__libcpp_mutex_t) == alignof(SRWLOCK), "");
+
+static_assert(sizeof(__libcpp_recursive_mutex_t) == sizeof(CRITICAL_SECTION),
+              "");
+static_assert(alignof(__libcpp_recursive_mutex_t) == alignof(CRITICAL_SECTION),
+              "");
+
+static_assert(sizeof(__libcpp_condvar_t) == sizeof(CONDITION_VARIABLE), "");
+static_assert(alignof(__libcpp_condvar_t) == alignof(CONDITION_VARIABLE), "");
+
+static_assert(sizeof(__libcpp_exec_once_flag) == sizeof(INIT_ONCE), "");
+static_assert(alignof(__libcpp_exec_once_flag) == alignof(INIT_ONCE), "");
+
+static_assert(sizeof(__libcpp_thread_id) == sizeof(DWORD), "");
+static_assert(alignof(__libcpp_thread_id) == alignof(DWORD), "");
+
+static_assert(sizeof(__libcpp_thread_t) == sizeof(HANDLE), "");
+static_assert(alignof(__libcpp_thread_t) == alignof(HANDLE), "");
+
+static_assert(sizeof(__libcpp_tls_key) == sizeof(DWORD), "");
+static_assert(alignof(__libcpp_tls_key) == alignof(DWORD), "");
+
+// Mutex
+int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m)
+{
+  InitializeCriticalSection((LPCRITICAL_SECTION)__m);
+  return 0;
+}
+
+int __libcpp_recursive_mutex_lock(__libcpp_recursive_mutex_t *__m)
+{
+  EnterCriticalSection((LPCRITICAL_SECTION)__m);
+  return 0;
+}
+
+bool __libcpp_recursive_mutex_trylock(__libcpp_recursive_mutex_t *__m)
+{
+  return TryEnterCriticalSection((LPCRITICAL_SECTION)__m) != 0;
+}
+
+int __libcpp_recursive_mutex_unlock(__libcpp_recursive_mutex_t *__m)
+{
+  LeaveCriticalSection((LPCRITICAL_SECTION)__m);
+  return 0;
+}
+
+int __libcpp_recursive_mutex_destroy(__libcpp_recursive_mutex_t *__m)
+{
+  DeleteCriticalSection((LPCRITICAL_SECTION)__m);
+  return 0;
+}
+
+int __libcpp_mutex_lock(__libcpp_mutex_t *__m)
+{
+  AcquireSRWLockExclusive((PSRWLOCK)__m);
+  return 0;
+}
+
+bool __libcpp_mutex_trylock(__libcpp_mutex_t *__m)
+{
+  return TryAcquireSRWLockExclusive((PSRWLOCK)__m) != 0;
+}
+
+int __libcpp_mutex_unlock(__libcpp_mutex_t *__m)
+{
+  ReleaseSRWLockExclusive((PSRWLOCK)__m);
+  return 0;
+}
+
+int __libcpp_mutex_destroy(__libcpp_mutex_t *__m)
+{
+  static_cast<void>(__m);
+  return 0;
+}
+
+// Condition Variable
+int __libcpp_condvar_signal(__libcpp_condvar_t *__cv)
+{
+  WakeConditionVariable((PCONDITION_VARIABLE)__cv);
+  return 0;
+}
+
+int __libcpp_condvar_broadcast(__libcpp_condvar_t *__cv)
+{
+  WakeAllConditionVariable((PCONDITION_VARIABLE)__cv);
+  return 0;
+}
+
+int __libcpp_condvar_wait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m)
+{
+  SleepConditionVariableSRW((PCONDITION_VARIABLE)__cv, (PSRWLOCK)__m, INFINITE, 0);
+  return 0;
+}
+
+int __libcpp_condvar_timedwait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m,
+                               __libcpp_timespec_t *__ts)
+{
+  using namespace _VSTD::chrono;
+
+  auto duration = seconds(__ts->tv_sec) + nanoseconds(__ts->tv_nsec);
+  auto abstime =
+      system_clock::time_point(duration_cast<system_clock::duration>(duration));
+  auto timeout_ms = duration_cast<milliseconds>(abstime - system_clock::now());
+
+  if (!SleepConditionVariableSRW((PCONDITION_VARIABLE)__cv, (PSRWLOCK)__m,
+                                 timeout_ms.count() > 0 ? timeout_ms.count()
+                                                        : 0,
+                                 0))
+    {
+      auto __ec = GetLastError();
+      return __ec == ERROR_TIMEOUT ? ETIMEDOUT : __ec;
+    }
+  return 0;
+}
+
+int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv)
+{
+  static_cast<void>(__cv);
+  return 0;
+}
+
+// Execute Once
+static inline _LIBCPP_INLINE_VISIBILITY BOOL CALLBACK
+__libcpp_init_once_execute_once_thunk(PINIT_ONCE __init_once, PVOID __parameter,
+                                      PVOID *__context)
+{
+  static_cast<void>(__init_once);
+  static_cast<void>(__context);
+
+  void (*init_routine)(void) = reinterpret_cast<void (*)(void)>(__parameter);
+  init_routine();
+  return TRUE;
+}
+
+int __libcpp_execute_once(__libcpp_exec_once_flag *__flag,
+                          void (*__init_routine)(void))
+{
+  if (!InitOnceExecuteOnce((PINIT_ONCE)__flag, __libcpp_init_once_execute_once_thunk,
+                           reinterpret_cast<void *>(__init_routine), NULL))
+    return GetLastError();
+  return 0;
+}
+
+// Thread ID
+bool __libcpp_thread_id_equal(__libcpp_thread_id __lhs,
+                              __libcpp_thread_id __rhs)
+{
+  return __lhs == __rhs;
+}
+
+bool __libcpp_thread_id_less(__libcpp_thread_id __lhs, __libcpp_thread_id __rhs)
+{
+  return __lhs < __rhs;
+}
+
+// Thread
+struct __libcpp_beginthreadex_thunk_data
+{
+  void *(*__func)(void *);
+  void *__arg;
+};
+
+static inline _LIBCPP_INLINE_VISIBILITY unsigned WINAPI
+__libcpp_beginthreadex_thunk(void *__raw_data)
+{
+  auto *__data =
+      static_cast<__libcpp_beginthreadex_thunk_data *>(__raw_data);
+  auto *__func = __data->__func;
+  void *__arg = __data->__arg;
+  delete __data;
+  return static_cast<unsigned>(reinterpret_cast<uintptr_t>(__func(__arg)));
+}
+
+bool __libcpp_thread_isnull(const __libcpp_thread_t *__t) {
+  return *__t == 0;
+}
+
+int __libcpp_thread_create(__libcpp_thread_t *__t, void *(*__func)(void *),
+                           void *__arg)
+{
+  auto *__data = new __libcpp_beginthreadex_thunk_data;
+  __data->__func = __func;
+  __data->__arg = __arg;
+
+  *__t = reinterpret_cast<HANDLE>(_beginthreadex(nullptr, 0,
+                                                 __libcpp_beginthreadex_thunk,
+                                                 __data, 0, nullptr));
+
+  if (*__t)
+    return 0;
+  return GetLastError();
+}
+
+__libcpp_thread_id __libcpp_thread_get_current_id()
+{
+  return GetCurrentThreadId();
+}
+
+__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t *__t)
+{
+  return GetThreadId(*__t);
+}
+
+int __libcpp_thread_join(__libcpp_thread_t *__t)
+{
+  if (WaitForSingleObjectEx(*__t, INFINITE, FALSE) == WAIT_FAILED)
+    return GetLastError();
+  if (!CloseHandle(*__t))
+    return GetLastError();
+  return 0;
+}
+
+int __libcpp_thread_detach(__libcpp_thread_t *__t)
+{
+  if (!CloseHandle(*__t))
+    return GetLastError();
+  return 0;
+}
+
+void __libcpp_thread_yield()
+{
+  SwitchToThread();
+}
+
+void __libcpp_thread_sleep_for(const chrono::nanoseconds& __ns)
+{
+  // round-up to the nearest millisecond
+  chrono::milliseconds __ms = chrono::ceil<chrono::milliseconds>(__ns);
+  // FIXME(compnerd) this should be an alertable sleep (WFSO or SleepEx)
+  Sleep(__ms.count());
+}
+
+// Thread Local Storage
+int __libcpp_tls_create(__libcpp_tls_key* __key,
+                        void(_LIBCPP_TLS_DESTRUCTOR_CC* __at_exit)(void*))
+{
+  DWORD index = FlsAlloc(__at_exit);
+  if (index == FLS_OUT_OF_INDEXES)
+    return GetLastError();
+  *__key = index;
+  return 0;
+}
+
+void *__libcpp_tls_get(__libcpp_tls_key __key)
+{
+  return FlsGetValue(__key);
+}
+
+int __libcpp_tls_set(__libcpp_tls_key __key, void *__p)
+{
+  if (!FlsSetValue(__key, __p))
+    return GetLastError();
+  return 0;
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/system_error.cpp b/app/src/main/cpp/libcxx/src/system_error.cpp
new file mode 100644
index 0000000..ba5fa8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/system_error.cpp
@@ -0,0 +1,298 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#ifdef _LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS
+#   define _LIBCPP_ERROR_CATEGORY_DEFINE_LEGACY_INLINE_FUNCTIONS
+#endif
+
+#include <__assert>
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <string>
+#include <string.h>
+#include <system_error>
+
+#include "include/config_elast.h"
+
+#if defined(__ANDROID__)
+#include <android/api-level.h>
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// class error_category
+
+#if defined(_LIBCPP_ERROR_CATEGORY_DEFINE_LEGACY_INLINE_FUNCTIONS)
+error_category::error_category() noexcept
+{
+}
+#endif
+
+error_category::~error_category() noexcept
+{
+}
+
+error_condition
+error_category::default_error_condition(int ev) const noexcept
+{
+    return error_condition(ev, *this);
+}
+
+bool
+error_category::equivalent(int code, const error_condition& condition) const noexcept
+{
+    return default_error_condition(code) == condition;
+}
+
+bool
+error_category::equivalent(const error_code& code, int condition) const noexcept
+{
+    return *this == code.category() && code.value() == condition;
+}
+
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+namespace {
+
+//  GLIBC also uses 1024 as the maximum buffer size internally.
+constexpr size_t strerror_buff_size = 1024;
+
+string do_strerror_r(int ev);
+
+#if defined(_LIBCPP_MSVCRT_LIKE)
+string do_strerror_r(int ev) {
+  char buffer[strerror_buff_size];
+  if (::strerror_s(buffer, strerror_buff_size, ev) == 0)
+    return string(buffer);
+  std::snprintf(buffer, strerror_buff_size, "unknown error %d", ev);
+  return string(buffer);
+}
+#else
+
+// Only one of the two following functions will be used, depending on
+// the return type of strerror_r:
+
+// For the GNU variant, a char* return value:
+__attribute__((unused)) const char *
+handle_strerror_r_return(char *strerror_return, char *buffer) {
+  // GNU always returns a string pointer in its return value. The
+  // string might point to either the input buffer, or a static
+  // buffer, but we don't care which.
+  return strerror_return;
+}
+
+// For the POSIX variant: an int return value.
+__attribute__((unused)) const char *
+handle_strerror_r_return(int strerror_return, char *buffer) {
+  // The POSIX variant either:
+  // - fills in the provided buffer and returns 0
+  // - returns a positive error value, or
+  // - returns -1 and fills in errno with an error value.
+  if (strerror_return == 0)
+    return buffer;
+
+  // Only handle EINVAL. Other errors abort.
+  int new_errno = strerror_return == -1 ? errno : strerror_return;
+  if (new_errno == EINVAL)
+    return "";
+
+  _LIBCPP_ASSERT(new_errno == ERANGE, "unexpected error from ::strerror_r");
+  // FIXME maybe? 'strerror_buff_size' is likely to exceed the
+  // maximum error size so ERANGE shouldn't be returned.
+  std::abort();
+}
+
+// This function handles both GNU and POSIX variants, dispatching to
+// one of the two above functions.
+string do_strerror_r(int ev) {
+    char buffer[strerror_buff_size];
+    // Preserve errno around the call. (The C++ standard requires that
+    // system_error functions not modify errno).
+    const int old_errno = errno;
+    const char *error_message = handle_strerror_r_return(
+        ::strerror_r(ev, buffer, strerror_buff_size), buffer);
+    // If we didn't get any message, print one now.
+    if (!error_message[0]) {
+      std::snprintf(buffer, strerror_buff_size, "Unknown error %d", ev);
+      error_message = buffer;
+    }
+    errno = old_errno;
+    return string(error_message);
+}
+#endif
+} // end namespace
+#endif
+
+string
+__do_message::message(int ev) const
+{
+#if defined(_LIBCPP_HAS_NO_THREADS)
+    return string(::strerror(ev));
+#else
+    return do_strerror_r(ev);
+#endif
+}
+
+class _LIBCPP_HIDDEN __generic_error_category
+    : public __do_message
+{
+public:
+    virtual const char* name() const noexcept;
+    virtual string message(int ev) const;
+};
+
+const char*
+__generic_error_category::name() const noexcept
+{
+    return "generic";
+}
+
+string
+__generic_error_category::message(int ev) const
+{
+#ifdef _LIBCPP_ELAST
+    if (ev > _LIBCPP_ELAST)
+      return string("unspecified generic_category error");
+#endif // _LIBCPP_ELAST
+    return __do_message::message(ev);
+}
+
+const error_category&
+generic_category() noexcept
+{
+    static __generic_error_category s;
+    return s;
+}
+
+class _LIBCPP_HIDDEN __system_error_category
+    : public __do_message
+{
+public:
+    virtual const char* name() const noexcept;
+    virtual string message(int ev) const;
+    virtual error_condition default_error_condition(int ev) const noexcept;
+};
+
+const char*
+__system_error_category::name() const noexcept
+{
+    return "system";
+}
+
+string
+__system_error_category::message(int ev) const
+{
+#ifdef _LIBCPP_ELAST
+    if (ev > _LIBCPP_ELAST)
+      return string("unspecified system_category error");
+#endif // _LIBCPP_ELAST
+    return __do_message::message(ev);
+}
+
+error_condition
+__system_error_category::default_error_condition(int ev) const noexcept
+{
+#ifdef _LIBCPP_ELAST
+    if (ev > _LIBCPP_ELAST)
+      return error_condition(ev, system_category());
+#endif // _LIBCPP_ELAST
+    return error_condition(ev, generic_category());
+}
+
+const error_category&
+system_category() noexcept
+{
+    static __system_error_category s;
+    return s;
+}
+
+// error_condition
+
+string
+error_condition::message() const
+{
+    return __cat_->message(__val_);
+}
+
+// error_code
+
+string
+error_code::message() const
+{
+    return __cat_->message(__val_);
+}
+
+// system_error
+
+string
+system_error::__init(const error_code& ec, string what_arg)
+{
+    if (ec)
+    {
+        if (!what_arg.empty())
+            what_arg += ": ";
+        what_arg += ec.message();
+    }
+    return what_arg;
+}
+
+system_error::system_error(error_code ec, const string& what_arg)
+    : runtime_error(__init(ec, what_arg)),
+      __ec_(ec)
+{
+}
+
+system_error::system_error(error_code ec, const char* what_arg)
+    : runtime_error(__init(ec, what_arg)),
+      __ec_(ec)
+{
+}
+
+system_error::system_error(error_code ec)
+    : runtime_error(__init(ec, "")),
+      __ec_(ec)
+{
+}
+
+system_error::system_error(int ev, const error_category& ecat, const string& what_arg)
+    : runtime_error(__init(error_code(ev, ecat), what_arg)),
+      __ec_(error_code(ev, ecat))
+{
+}
+
+system_error::system_error(int ev, const error_category& ecat, const char* what_arg)
+    : runtime_error(__init(error_code(ev, ecat), what_arg)),
+      __ec_(error_code(ev, ecat))
+{
+}
+
+system_error::system_error(int ev, const error_category& ecat)
+    : runtime_error(__init(error_code(ev, ecat), "")),
+      __ec_(error_code(ev, ecat))
+{
+}
+
+system_error::~system_error() noexcept
+{
+}
+
+void
+__throw_system_error(int ev, const char* what_arg)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    throw system_error(error_code(ev, system_category()), what_arg);
+#else
+    (void)ev;
+    (void)what_arg;
+    _VSTD::abort();
+#endif
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/thread.cpp b/app/src/main/cpp/libcxx/src/thread.cpp
new file mode 100644
index 0000000..ec4f65f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/thread.cpp
@@ -0,0 +1,217 @@
+//===------------------------- thread.cpp----------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+#include <exception>
+#include <future>
+#include <limits>
+#include <thread>
+#include <vector>
+
+#if __has_include(<unistd.h>)
+# include <unistd.h> // for sysconf
+#endif
+
+#if defined(__NetBSD__)
+#pragma weak pthread_create // Do not create libpthread dependency
+#endif
+
+#if defined(_LIBCPP_WIN32API)
+#include <windows.h>
+#endif
+
+#if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#pragma comment(lib, "pthread")
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+thread::~thread()
+{
+    if (!__libcpp_thread_isnull(&__t_))
+        terminate();
+}
+
+void
+thread::join()
+{
+    int ec = EINVAL;
+    if (!__libcpp_thread_isnull(&__t_))
+    {
+        ec = __libcpp_thread_join(&__t_);
+        if (ec == 0)
+            __t_ = _LIBCPP_NULL_THREAD;
+    }
+
+    if (ec)
+        __throw_system_error(ec, "thread::join failed");
+}
+
+void
+thread::detach()
+{
+    int ec = EINVAL;
+    if (!__libcpp_thread_isnull(&__t_))
+    {
+        ec = __libcpp_thread_detach(&__t_);
+        if (ec == 0)
+            __t_ = _LIBCPP_NULL_THREAD;
+    }
+
+    if (ec)
+        __throw_system_error(ec, "thread::detach failed");
+}
+
+unsigned
+thread::hardware_concurrency() noexcept
+{
+#if defined(_SC_NPROCESSORS_ONLN)
+    long result = sysconf(_SC_NPROCESSORS_ONLN);
+    // sysconf returns -1 if the name is invalid, the option does not exist or
+    // does not have a definite limit.
+    // if sysconf returns some other negative number, we have no idea
+    // what is going on. Default to something safe.
+    if (result < 0)
+        return 0;
+    return static_cast<unsigned>(result);
+#elif defined(_LIBCPP_WIN32API)
+    SYSTEM_INFO info;
+    GetSystemInfo(&info);
+    return info.dwNumberOfProcessors;
+#else  // defined(CTL_HW) && defined(HW_NCPU)
+    // TODO: grovel through /proc or check cpuid on x86 and similar
+    // instructions on other architectures.
+#   if defined(_LIBCPP_WARNING)
+        _LIBCPP_WARNING("hardware_concurrency not yet implemented")
+#   else
+#       warning hardware_concurrency not yet implemented
+#   endif
+    return 0;  // Means not computable [thread.thread.static]
+#endif // defined(CTL_HW) && defined(HW_NCPU)
+}
+
+namespace this_thread
+{
+
+void
+sleep_for(const chrono::nanoseconds& ns)
+{
+    if (ns > chrono::nanoseconds::zero())
+    {
+        __libcpp_thread_sleep_for(ns);
+    }
+}
+
+}  // this_thread
+
+__thread_specific_ptr<__thread_struct>&
+__thread_local_data()
+{
+  // Even though __thread_specific_ptr's destructor doesn't actually destroy
+  // anything (see comments there), we can't call it at all because threads may
+  // outlive the static variable and calling its destructor means accessing an
+  // object outside of its lifetime, which is UB.
+  alignas(__thread_specific_ptr<__thread_struct>) static char __b[sizeof(__thread_specific_ptr<__thread_struct>)];
+  static __thread_specific_ptr<__thread_struct>* __p = new (__b) __thread_specific_ptr<__thread_struct>();
+  return *__p;
+}
+
+// __thread_struct_imp
+
+template <class T>
+class _LIBCPP_HIDDEN __hidden_allocator
+{
+public:
+    typedef T  value_type;
+
+    T* allocate(size_t __n)
+        {return static_cast<T*>(::operator new(__n * sizeof(T)));}
+    void deallocate(T* __p, size_t) {::operator delete(static_cast<void*>(__p));}
+
+    size_t max_size() const {return size_t(~0) / sizeof(T);}
+};
+
+class _LIBCPP_HIDDEN __thread_struct_imp
+{
+    typedef vector<__assoc_sub_state*,
+                          __hidden_allocator<__assoc_sub_state*> > _AsyncStates;
+    typedef vector<pair<condition_variable*, mutex*>,
+               __hidden_allocator<pair<condition_variable*, mutex*> > > _Notify;
+
+    _AsyncStates async_states_;
+    _Notify notify_;
+
+    __thread_struct_imp(const __thread_struct_imp&);
+    __thread_struct_imp& operator=(const __thread_struct_imp&);
+public:
+    __thread_struct_imp() {}
+    ~__thread_struct_imp();
+
+    void notify_all_at_thread_exit(condition_variable* cv, mutex* m);
+    void __make_ready_at_thread_exit(__assoc_sub_state* __s);
+};
+
+__thread_struct_imp::~__thread_struct_imp()
+{
+    for (_Notify::iterator i = notify_.begin(), e = notify_.end();
+            i != e; ++i)
+    {
+        i->first->notify_all();
+        i->second->unlock();
+    }
+    for (_AsyncStates::iterator i = async_states_.begin(), e = async_states_.end();
+            i != e; ++i)
+    {
+        (*i)->__make_ready();
+        (*i)->__release_shared();
+    }
+}
+
+void
+__thread_struct_imp::notify_all_at_thread_exit(condition_variable* cv, mutex* m)
+{
+    notify_.push_back(pair<condition_variable*, mutex*>(cv, m));
+}
+
+void
+__thread_struct_imp::__make_ready_at_thread_exit(__assoc_sub_state* __s)
+{
+    async_states_.push_back(__s);
+    __s->__add_shared();
+}
+
+// __thread_struct
+
+__thread_struct::__thread_struct()
+    : __p_(new __thread_struct_imp)
+{
+}
+
+__thread_struct::~__thread_struct()
+{
+    delete __p_;
+}
+
+void
+__thread_struct::notify_all_at_thread_exit(condition_variable* cv, mutex* m)
+{
+    __p_->notify_all_at_thread_exit(cv, m);
+}
+
+void
+__thread_struct::__make_ready_at_thread_exit(__assoc_sub_state* __s)
+{
+    __p_->__make_ready_at_thread_exit(__s);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // !_LIBCPP_HAS_NO_THREADS
diff --git a/app/src/main/cpp/libcxx/src/typeinfo.cpp b/app/src/main/cpp/libcxx/src/typeinfo.cpp
new file mode 100644
index 0000000..c7f0a70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/typeinfo.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <typeinfo>
+
+#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_ABI_VCRUNTIME)
+
+#include <string.h>
+
+int std::type_info::__compare(const type_info &__rhs) const noexcept {
+  if (&__data == &__rhs.__data)
+    return 0;
+  return strcmp(&__data.__decorated_name[1], &__rhs.__data.__decorated_name[1]);
+}
+
+const char *std::type_info::name() const noexcept {
+  // TODO(compnerd) cache demangled &__data.__decorated_name[1]
+  return &__data.__decorated_name[1];
+}
+
+size_t std::type_info::hash_code() const noexcept {
+#if defined(_WIN64)
+  constexpr size_t fnv_offset_basis = 14695981039346656037ull;
+  constexpr size_t fnv_prime = 10995116282110ull;
+#else
+  constexpr size_t fnv_offset_basis = 2166136261ull;
+  constexpr size_t fnv_prime = 16777619ull;
+#endif
+
+  size_t value = fnv_offset_basis;
+  for (const char* c = &__data.__decorated_name[1]; *c; ++c) {
+    value ^= static_cast<size_t>(static_cast<unsigned char>(*c));
+    value *= fnv_prime;
+  }
+
+#if defined(_WIN64)
+  value ^= value >> 32;
+#endif
+
+  return value;
+}
+#endif // _LIBCPP_ABI_MICROSOFT
+
+// FIXME: Remove the _LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY configuration.
+#if (!defined(LIBCXX_BUILDING_LIBCXXABI) &&               \
+     !defined(LIBCXXRT) &&                                \
+     !defined(__GLIBCXX__) &&                             \
+     !defined(_LIBCPP_ABI_VCRUNTIME)) ||                  \
+    defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)
+std::type_info::~type_info()
+{
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/src/utility.cpp b/app/src/main/cpp/libcxx/src/utility.cpp
new file mode 100644
index 0000000..44433d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/utility.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <utility>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+const piecewise_construct_t piecewise_construct{};
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/valarray.cpp b/app/src/main/cpp/libcxx/src/valarray.cpp
new file mode 100644
index 0000000..5d63bc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/valarray.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <valarray>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// These two symbols are part of the v1 ABI but not part of the >=v2 ABI.
+#if _LIBCPP_ABI_VERSION == 1
+template _LIBCPP_FUNC_VIS valarray<size_t>::valarray(size_t);
+template _LIBCPP_FUNC_VIS valarray<size_t>::~valarray();
+#endif
+
+template void valarray<size_t>::resize(size_t, size_t);
+
+void
+gslice::__init(size_t __start)
+{
+    valarray<size_t> __indices(__size_.size());
+    size_t __k = __size_.size() != 0;
+    for (size_t __i = 0; __i < __size_.size(); ++__i)
+        __k *= __size_[__i];
+    __1d_.resize(__k);
+    if (__1d_.size())
+    {
+        __k = 0;
+        __1d_[__k] = __start;
+        while (true)
+        {
+            size_t __i = __indices.size() - 1;
+            while (true)
+            {
+                if (++__indices[__i] < __size_[__i])
+                {
+                    ++__k;
+                    __1d_[__k] = __1d_[__k-1] + __stride_[__i];
+                    for (size_t __j = __i + 1; __j != __indices.size(); ++__j)
+                        __1d_[__k] -= __stride_[__j] * (__size_[__j] - 1);
+                    break;
+                }
+                else
+                {
+                    if (__i == 0)
+                        return;
+                    __indices[__i--] = 0;
+                }
+            }
+        }
+    }
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/variant.cpp b/app/src/main/cpp/libcxx/src/variant.cpp
new file mode 100644
index 0000000..b6ec448
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/variant.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <variant>
+
+namespace std {
+
+const char* bad_variant_access::what() const noexcept {
+  return "bad_variant_access";
+}
+
+}  // namespace std
diff --git a/app/src/main/cpp/libcxx/src/vector.cpp b/app/src/main/cpp/libcxx/src/vector.cpp
new file mode 100644
index 0000000..fa63d5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/vector.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <vector>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_ABI_DO_NOT_EXPORT_VECTOR_BASE_COMMON
+
+template <bool>
+struct __vector_base_common;
+
+template <>
+struct __vector_base_common<true> {
+  _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __throw_length_error() const;
+  _LIBCPP_NORETURN _LIBCPP_EXPORTED_FROM_ABI void __throw_out_of_range() const;
+};
+
+void __vector_base_common<true>::__throw_length_error() const {
+  _VSTD::__throw_length_error("vector");
+}
+
+void __vector_base_common<true>::__throw_out_of_range() const {
+  _VSTD::__throw_out_of_range("vector");
+}
+
+#endif // _LIBCPP_ABI_DO_NOT_EXPORT_VECTOR_BASE_COMMON
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/src/verbose_abort.cpp b/app/src/main/cpp/libcxx/src/verbose_abort.cpp
new file mode 100644
index 0000000..a9fba5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/src/verbose_abort.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__config>
+#include <__verbose_abort>
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+
+#ifdef __BIONIC__
+#  include <android/api-level.h>
+#  if __ANDROID_API__ >= 21
+#    include <syslog.h>
+extern "C" void android_set_abort_message(const char* msg);
+#  else
+#    include <assert.h>
+#  endif // __ANDROID_API__ >= 21
+#endif   // __BIONIC__
+
+#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
+#  include <CrashReporterClient.h>
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+_LIBCPP_WEAK
+void __libcpp_verbose_abort(char const* format, ...) {
+  // Write message to stderr. We do this before formatting into a
+  // buffer so that we still get some information out if that fails.
+  {
+    va_list list;
+    va_start(list, format);
+    std::vfprintf(stderr, format, list);
+    va_end(list);
+  }
+
+  // Format the arguments into an allocated buffer for CrashReport & friends.
+  // We leak the buffer on purpose, since we're about to abort() anyway.
+  char* buffer; (void)buffer;
+  va_list list;
+  va_start(list, format);
+
+#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
+  // Note that we should technically synchronize accesses here (by e.g. taking a lock),
+  // however concretely we're only setting a pointer, so the likelihood of a race here
+  // is low.
+  vasprintf(&buffer, format, list);
+  CRSetCrashLogMessage(buffer);
+#elif defined(__BIONIC__)
+  vasprintf(&buffer, format, list);
+
+#  if __ANDROID_API__ >= 21
+  // Show error in tombstone.
+  android_set_abort_message(buffer);
+
+  // Show error in logcat.
+  openlog("libc++", 0, 0);
+  syslog(LOG_CRIT, "%s", buffer);
+  closelog();
+#  else
+  // The good error reporting wasn't available in Android until L. Since we're
+  // about to abort anyway, just call __assert2, which will log _somewhere_
+  // (tombstone and/or logcat) in older releases.
+  __assert2(__FILE__, __LINE__, __func__, buffer);
+#  endif // __ANDROID_API__ >= 21
+#endif
+  va_end(list);
+
+  std::abort();
+}
+
+_LIBCPP_END_NAMESPACE_STD
diff --git a/app/src/main/cpp/libcxx/test/.clang-tidy b/app/src/main/cpp/libcxx/test/.clang-tidy
new file mode 100644
index 0000000..c0f9695
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/.clang-tidy
@@ -0,0 +1,5 @@
+InheritParentConfig: true
+
+CheckOptions:
+  - key:   readability-identifier-naming.ParameterPrefix
+    value: ""
diff --git a/app/src/main/cpp/libcxx/test/CMakeLists.txt b/app/src/main/cpp/libcxx/test/CMakeLists.txt
new file mode 100644
index 0000000..78d3e2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/CMakeLists.txt
@@ -0,0 +1,106 @@
+add_subdirectory(tools)
+
+# By default, libcxx and libcxxabi share a library directory.
+if (NOT LIBCXX_CXX_ABI_LIBRARY_PATH)
+  set(LIBCXX_CXX_ABI_LIBRARY_PATH "${LIBCXX_LIBRARY_DIR}" CACHE PATH
+      "The path to libc++abi library.")
+endif()
+
+set(LIBCXX_EXECUTOR "\\\"${Python3_EXECUTABLE}\\\" ${CMAKE_CURRENT_LIST_DIR}/../utils/run.py" CACHE STRING
+    "Executor to use when running tests.")
+
+set(AUTO_GEN_COMMENT "## Autogenerated by libcxx configuration.\n# Do not edit!")
+set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")
+
+macro(serialize_lit_param param value)
+  string(APPEND SERIALIZED_LIT_PARAMS "config.${param} = ${value}\n")
+endmacro()
+
+if (NOT LIBCXX_ENABLE_EXCEPTIONS)
+  serialize_lit_param(enable_exceptions False)
+endif()
+
+if (NOT LIBCXX_ENABLE_RTTI)
+  serialize_lit_param(enable_rtti False)
+endif()
+
+if (LIBCXX_ENABLE_ASSERTIONS)
+  serialize_lit_param(enable_assertions True)
+endif()
+
+if (CMAKE_CXX_COMPILER_TARGET)
+  serialize_lit_param(target_triple "\"${CMAKE_CXX_COMPILER_TARGET}\"")
+else()
+  serialize_lit_param(target_triple "\"${LLVM_DEFAULT_TARGET_TRIPLE}\"")
+endif()
+
+if (LLVM_USE_SANITIZER)
+  serialize_lit_param(use_sanitizer "\"${LLVM_USE_SANITIZER}\"")
+endif()
+
+foreach(param IN LISTS LIBCXX_TEST_PARAMS)
+  string(REGEX REPLACE "(.+)=(.+)" "\\1" name "${param}")
+  string(REGEX REPLACE "(.+)=(.+)" "\\2" value "${param}")
+  serialize_lit_param("${name}" "\"${value}\"")
+endforeach()
+
+if (NOT DEFINED LIBCXX_TEST_DEPS)
+  message(FATAL_ERROR "Expected LIBCXX_TEST_DEPS to be defined")
+endif()
+
+if (LIBCXX_INCLUDE_TESTS)
+  include(AddLLVM) # for configure_lit_site_cfg and add_lit_testsuite
+
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/configs/cmake-bridge.cfg.in"
+                 "${CMAKE_CURRENT_BINARY_DIR}/cmake-bridge.cfg"
+                 @ONLY)
+
+  configure_lit_site_cfg(
+    "${LIBCXX_TEST_CONFIG}"
+    ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
+    MAIN_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}/lit.cfg.py")
+
+  add_custom_target(cxx-test-depends
+    DEPENDS cxx ${LIBCXX_TEST_DEPS}
+    COMMENT "Builds dependencies required to run the test suite.")
+
+  add_lit_testsuite(check-cxx
+    "Running libcxx tests"
+    ${CMAKE_CURRENT_BINARY_DIR}
+    DEPENDS cxx-test-depends)
+endif()
+
+if (LIBCXX_GENERATE_COVERAGE)
+  include(CodeCoverage)
+  set(output_dir "${CMAKE_CURRENT_BINARY_DIR}/coverage")
+  set(capture_dirs
+      "${LIBCXX_LIB_CMAKEFILES_DIR}/cxx_objects.dir/"
+      "${LIBCXX_LIB_CMAKEFILES_DIR}/cxx.dir/"
+      "${LIBCXX_LIB_CMAKEFILES_DIR}/cxx_experimental.dir/"
+      "${CMAKE_CURRENT_BINARY_DIR}")
+  set(extract_dirs "${LIBCXX_SOURCE_DIR}/include;${LIBCXX_SOURCE_DIR}/src")
+  setup_lcov_test_target_coverage("cxx" "${output_dir}" "${capture_dirs}" "${extract_dirs}")
+endif()
+
+if (LIBCXX_CONFIGURE_IDE)
+  # Create dummy targets for each of the tests in the test suite, this allows
+  # IDE's such as CLion to correctly highlight the tests because it knows
+  # roughly what include paths/compile flags/macro definitions are needed.
+  include_directories(support)
+  file(GLOB_RECURSE LIBCXX_TESTS ${CMAKE_CURRENT_SOURCE_DIR}/*.pass.cpp)
+  file(GLOB LIBCXX_TEST_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/support/*)
+  file(GLOB_RECURSE LIBCXX_HEADERS ${CMAKE_CURRENT_SOURCE_DIR}/../include/*)
+  add_executable(libcxx_test_objects EXCLUDE_FROM_ALL
+          ${LIBCXX_TESTS} ${LIBCXX_TEST_HEADERS} ${LIBCXX_HEADERS})
+  add_dependencies(libcxx_test_objects cxx)
+
+  split_list(LIBCXX_COMPILE_FLAGS)
+  split_list(LIBCXX_LINK_FLAGS)
+
+  set_target_properties(libcxx_test_objects
+          PROPERTIES
+            COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
+            LINK_FLAGS "${LIBCXX_LINK_FLAGS}"
+            EXCLUDE_FROM_ALL ON
+  )
+endif()
diff --git a/app/src/main/cpp/libcxx/test/configs/apple-libc++-backdeployment.cfg.in b/app/src/main/cpp/libcxx/test/configs/apple-libc++-backdeployment.cfg.in
new file mode 100644
index 0000000..6c2e70f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/apple-libc++-backdeployment.cfg.in
@@ -0,0 +1,62 @@
+# Testing configuration for back-deployment against older Apple system libc++.
+#
+# Under this configuration, we compile and link all the test suite against the latest libc++,
+# however we run against the libc++ on a different platform. This emulates the workflow of
+# a developer building their application using recent tools but with the goal of deploying
+# on existing devices running an older OS (and hence an older dylib).
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig, libcxx.test.dsl
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+BACKDEPLOYMENT_PARAMETERS = [
+    libcxx.test.dsl.Parameter(name='cxx_runtime_root', type=str,
+        actions=lambda root: [libcxx.test.dsl.AddSubstitution('%{cxx-runtime-root}', root)],
+        help="""
+        The simulated root of the system (for libc++) when running tests.
+
+        This should be a directory hierarchy under which the libc++ dylib can be found.
+        The dylib in that hierarchy is the one that will be used at runtime when running
+        the tests.
+        """),
+    libcxx.test.dsl.Parameter(name='abi_runtime_root', type=str,
+        actions=lambda root: [libcxx.test.dsl.AddSubstitution('%{abi-runtime-root}', root)],
+        help="""
+        The simulated root of the system (for libc++abi) when running tests.
+
+        This should be a directory hierarchy under which the libc++abi dylib can be found.
+        The dylib in that hierarchy is the one that will be used at runtime when running
+        the tests.
+        """),
+    libcxx.test.dsl.Parameter(name='unwind_runtime_root', type=str,
+        actions=lambda root: [libcxx.test.dsl.AddSubstitution('%{unwind-runtime-root}', root)],
+        help="""
+        The simulated root of the system (for libunwind) when running tests.
+
+        This should be a directory hierarchy under which the libunwind dylib can be found.
+        The dylib in that hierarchy is the one that will be used at runtime when running
+        the tests.
+        """),
+]
+
+config.substitutions.append(('%{flags}',
+    '-isysroot {}'.format('@CMAKE_OSX_SYSROOT@') if '@CMAKE_OSX_SYSROOT@' else ''
+))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{libcxx}/test/support'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -lc++'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T --env DYLD_LIBRARY_PATH="%{cxx-runtime-root}:%{abi-runtime-root}:%{unwind-runtime-root}" -- '
+))
+
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS + BACKDEPLOYMENT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/apple-libc++-shared.cfg.in b/app/src/main/cpp/libcxx/test/configs/apple-libc++-shared.cfg.in
new file mode 100644
index 0000000..71c4a9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/apple-libc++-shared.cfg.in
@@ -0,0 +1,33 @@
+# Testing configuration for Apple's system libc++.
+#
+# This configuration differs from a normal LLVM shared library configuration in
+# that we must use DYLD_LIBRARY_PATH to run the tests against the just-built library,
+# since Apple's libc++ has an absolute install_name.
+#
+# We also don't use a per-target include directory layout, so we have only one
+# include directory for the libc++ headers.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}',
+    '-isysroot {}'.format('@CMAKE_OSX_SYSROOT@') if '@CMAKE_OSX_SYSROOT@' else ''
+))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{libcxx}/test/support'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -lc++'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T --env DYLD_LIBRARY_PATH=%{lib} -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/cmake-bridge.cfg.in b/app/src/main/cpp/libcxx/test/configs/cmake-bridge.cfg.in
new file mode 100644
index 0000000..e2c86f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/cmake-bridge.cfg.in
@@ -0,0 +1,33 @@
+@AUTO_GEN_COMMENT@
+
+@SERIALIZED_LIT_PARAMS@
+
+#
+# This file performs the bridge between the CMake configuration and the Lit
+# configuration files by setting up the LitConfig object and various Lit
+# substitutions from CMake variables.
+#
+# Individual configuration files can take advantage of this bridge by
+# loading the file and then setting up the remaining Lit substitutions.
+#
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.format
+
+# Basic configuration of the test suite
+config.name = os.path.basename('@LIBCXX_TEST_CONFIG@')
+config.test_source_root = os.path.join('@LIBCXX_SOURCE_DIR@', 'test')
+config.test_format = libcxx.test.format.CxxStandardLibraryTest()
+config.recursiveExpansionLimit = 10
+config.test_exec_root = os.path.join('@CMAKE_BINARY_DIR@', 'test')
+
+# Add substitutions for bootstrapping the test suite configuration
+import shlex
+config.substitutions.append(('%{cxx}', shlex.quote('@CMAKE_CXX_COMPILER@')))
+config.substitutions.append(('%{libcxx}', '@LIBCXX_SOURCE_DIR@'))
+config.substitutions.append(('%{include}', '@LIBCXX_GENERATED_INCLUDE_DIR@'))
+config.substitutions.append(('%{target-include}', '@LIBCXX_GENERATED_INCLUDE_TARGET_DIR@'))
+config.substitutions.append(('%{lib}', '@LIBCXX_LIBRARY_DIR@'))
+config.substitutions.append(('%{executor}', '@LIBCXX_EXECUTOR@'))
+config.substitutions.append(('%{test-tools}', '@LIBCXX_TEST_TOOLS_PATH@'))
diff --git a/app/src/main/cpp/libcxx/test/configs/ibm-libc++-shared.cfg.in b/app/src/main/cpp/libcxx/test/configs/ibm-libc++-shared.cfg.in
new file mode 100644
index 0000000..fb65bf6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/ibm-libc++-shared.cfg.in
@@ -0,0 +1,33 @@
+# This testing configuration handles running the test suite against libc++ on
+# AIX using a shared library.
+#
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}', ''))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -D__LIBC_NO_CPP_MATH_OVERLOADS__ -I %{include} -I %{libcxx}/test/support -pthread'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -lc++ -lc++abi -latomic -Wl,-bbigtoc'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T --env LIBPATH=%{lib} -- '
+))
+
+# LIBCXX-AIX-FIXME is the feature name used to XFAIL the
+# initial AIX failures until they can be properly diagnosed
+# and fixed. This allows easier detection of new test failures
+# and regressions. Note: New failures should not be suppressed
+# using this feature. (Also see llvm.org/PR52188)
+config.available_features.add('LIBCXX-AIX-FIXME')
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-android-ndk.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-android-ndk.cfg.in
new file mode 100644
index 0000000..6dbcd7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-android-ndk.cfg.in
@@ -0,0 +1,39 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a shared library and an Android-specific rpath.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+import re
+
+# Allow overriding the target API level for each test run. (e.g. Build libc++
+# against an old API, but build the tests against a newer API.)
+target_api = lit_config.params.get('target_api')
+if target_api is not None:
+    config.target_triple = re.sub('\d+$', '', config.target_triple) + str(target_api)
+
+config.substitutions.append(('%{flags}', ''))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support'
+))
+
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -lc++_shared'
+))
+
+config.substitutions.append(('%{exec}',
+    '%{executor} --prepend-path-env LD_LIBRARY_PATH /data/local/tmp/libc++ --execdir %T -- '
+))
+
+# This feature is used to XFAIL tests that fail on Android but haven't been
+# properly diagnosed and fixed yet.
+config.available_features.add('LIBCXX-ANDROID-FIXME')
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-mingw.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-mingw.cfg.in
new file mode 100644
index 0000000..0cb6793
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-mingw.cfg.in
@@ -0,0 +1,25 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using either a DLL or a static library, with MinGW/Clang on Windows.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}', ''))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -lc++'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T --env PATH=%{lib} -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-clangcl.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-clangcl.cfg.in
new file mode 100644
index 0000000..e8f1fc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-clangcl.cfg.in
@@ -0,0 +1,25 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a DLL, with Clang-cl on Windows.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}', '--driver-mode=g++'))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_STDIO_ISO_WIDE_SPECIFIERS -DNOMINMAX'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib -L %{lib} -lc++ -lmsvcrt -lmsvcprt -loldnames'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T --env PATH=%{lib} -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-gcc.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-gcc.cfg.in
new file mode 100644
index 0000000..f071bf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-gcc.cfg.in
@@ -0,0 +1,26 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a shared library, with GCC. This is done differently from Clang because
+# GCC does not support the -nostdlib++ command-line flag.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}', ''))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support'
+))
+config.substitutions.append(('%{link_flags}',
+    '-L %{lib} -Wl,-rpath,%{lib} -nodefaultlibs -lc++ -lm -lgcc_s -lgcc -lpthread -lc -lgcc_s -lgcc -latomic'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-no-vcruntime-clangcl.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-no-vcruntime-clangcl.cfg.in
new file mode 100644
index 0000000..c6ddfb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared-no-vcruntime-clangcl.cfg.in
@@ -0,0 +1,26 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a DLL, with Clang-cl on Windows. This variant sets _HAS_EXCEPTIONS = 0
+# which removes exception class definitions  from the vcruntime.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}', '--driver-mode=g++'))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_STDIO_ISO_WIDE_SPECIFIERS -DNOMINMAX -D_HAS_EXCEPTIONS=0'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib -L %{lib} -lc++ -lmsvcrt -lmsvcprt -loldnames'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T --env PATH=%{lib} -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared.cfg.in
new file mode 100644
index 0000000..7228c7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-shared.cfg.in
@@ -0,0 +1,27 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a shared library.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}',
+    '-isysroot {}'.format('@CMAKE_OSX_SYSROOT@') if '@CMAKE_OSX_SYSROOT@' else ''
+))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -Wl,-rpath,%{lib} -lc++ -pthread'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-static-clangcl.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-static-clangcl.cfg.in
new file mode 100644
index 0000000..460f7d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-static-clangcl.cfg.in
@@ -0,0 +1,25 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a static library, with Clang-cl on Windows.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}', '--driver-mode=g++'))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS -D_CRT_STDIO_ISO_WIDE_SPECIFIERS -DNOMINMAX'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib -L %{lib} -llibc++ -lmsvcrt -lmsvcprt -loldnames'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/configs/llvm-libc++-static.cfg.in b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-static.cfg.in
new file mode 100644
index 0000000..bdbcb0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/configs/llvm-libc++-static.cfg.in
@@ -0,0 +1,27 @@
+# This testing configuration handles running the test suite against LLVM's libc++
+# using a static library.
+
+lit_config.load_config(config, '@CMAKE_CURRENT_BINARY_DIR@/cmake-bridge.cfg')
+
+config.substitutions.append(('%{flags}',
+    '-isysroot {}'.format('@CMAKE_OSX_SYSROOT@') if '@CMAKE_OSX_SYSROOT@' else ''
+))
+config.substitutions.append(('%{compile_flags}',
+    '-nostdinc++ -I %{include} -I %{target-include} -I %{libcxx}/test/support'
+))
+config.substitutions.append(('%{link_flags}',
+    '-nostdlib++ -L %{lib} -lc++ -lc++abi -pthread'
+))
+config.substitutions.append(('%{exec}',
+    '%{executor} --execdir %T -- '
+))
+
+import os, site
+site.addsitedir(os.path.join('@LIBCXX_SOURCE_DIR@', 'utils'))
+import libcxx.test.params, libcxx.test.newconfig
+libcxx.test.newconfig.configure(
+    libcxx.test.params.DEFAULT_PARAMETERS,
+    libcxx.test.features.DEFAULT_FEATURES,
+    config,
+    lit_config
+)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.cxx1z.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.cxx1z.pass.cpp
new file mode 100644
index 0000000..c1acc10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.cxx1z.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class RandomAccessIterator>
+//     void
+//     random_shuffle(RandomAccessIterator first, RandomAccessIterator last);
+//
+// template <class RandomAccessIterator, class RandomNumberGenerator>
+//     void
+//     random_shuffle(RandomAccessIterator first, RandomAccessIterator last,
+//                    RandomNumberGenerator& rand);
+
+//
+//  In C++17, random_shuffle has been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE
+//  is defined before including <algorithm>, then random_shuffle will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <algorithm>
+#include <vector>
+
+#include "test_macros.h"
+
+struct gen
+{
+    std::ptrdiff_t operator()(std::ptrdiff_t n)
+    {
+        return n-1;
+    }
+};
+
+
+int main(int, char**)
+{
+    std::vector<int> v;
+    std::random_shuffle(v.begin(), v.end());
+    gen r;
+    std::random_shuffle(v.begin(), v.end(), r);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.depr_in_cxx14.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.depr_in_cxx14.verify.cpp
new file mode 100644
index 0000000..fc58955
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.depr_in_cxx14.verify.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class RandomAccessIterator>
+//     void
+//     random_shuffle(RandomAccessIterator first, RandomAccessIterator last);
+//
+// template <class RandomAccessIterator, class RandomNumberGenerator>
+//     void
+//     random_shuffle(RandomAccessIterator first, RandomAccessIterator last,
+//                    RandomNumberGenerator& rand);
+
+// UNSUPPORTED: c++03, c++11
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_RANDOM_SHUFFLE
+
+#include <algorithm>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct gen
+{
+    std::ptrdiff_t operator()(std::ptrdiff_t n)
+    {
+        return n-1;
+    }
+};
+
+
+int main(int, char**)
+{
+    int v[1] = {1};
+    std::random_shuffle(&v[0], &v[1]); // expected-warning {{'random_shuffle<int *>' is deprecated}}
+    gen r;
+    std::random_shuffle(&v[0], &v[1], r); // expected-warning {{'random_shuffle<int *, gen &>' is deprecated}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_nontrivial.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_nontrivial.pass.cpp
new file mode 100644
index 0000000..c26f755
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_nontrivial.pass.cpp
@@ -0,0 +1,334 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// When the debug mode is enabled, we don't unwrap iterators in `std::copy` and similar algorithms so we never get the
+// optimization.
+// UNSUPPORTED: libcpp-has-debug-mode
+// In the modules build, adding another overload of `memmove` doesn't work.
+// UNSUPPORTED: modules-build
+// GCC complains about "ambiguating" `__builtin_memmove`.
+// UNSUPPORTED: gcc
+
+// <algorithm>
+
+#include <cassert>
+#include <cstddef>
+
+// These tests check that `std::copy` and `std::move` (including their variations like `copy_n`) don't forward to
+// `std::memmove` when doing so would be observable.
+
+// This template is a better match than the actual `builtin_memmove` (it can match the pointer type exactly, without an
+// implicit conversion to `void*`), so it should hijack the call inside `std::copy` and similar algorithms if it's made.
+template <class Dst, class Src>
+constexpr void* __builtin_memmove(Dst*, Src*, size_t) {
+  assert(false);
+  return nullptr;
+}
+
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <iterator>
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+// S1 and S2 are simple structs that are convertible to each other and have the same bit representation.
+struct S1 {
+  int x;
+
+  constexpr S1() = default;
+  constexpr S1(int set_x) : x(set_x) {}
+
+  friend constexpr bool operator==(const S1& lhs, const S1& rhs) { return lhs.x == rhs.x; }
+};
+
+struct S2 {
+  int x;
+
+  constexpr S2() = default;
+  constexpr S2(int set_x) : x(set_x) {}
+  constexpr S2(S1 from) : x(from.x) {}
+
+  friend constexpr bool operator==(const S1& lhs, const S2& rhs) { return lhs.x == rhs.x; }
+  friend constexpr bool operator==(const S2& lhs, const S2& rhs) { return lhs.x == rhs.x; }
+};
+
+// U1 and U2 are simple unions that are convertible to each other and have the same bit representation.
+union U1 {
+  int x;
+
+  constexpr U1() = default;
+  constexpr U1(int set_x) : x(set_x) {}
+
+  friend constexpr bool operator==(const U1& lhs, const U1& rhs) { return lhs.x == rhs.x; }
+};
+
+union U2 {
+  int x;
+
+  constexpr U2() = default;
+  constexpr U2(int set_x) : x(set_x) {}
+  constexpr U2(U1 from) : x(from.x) {}
+
+  friend constexpr bool operator==(const U1& lhs, const U2& rhs) { return lhs.x == rhs.x; }
+  friend constexpr bool operator==(const U2& lhs, const U2& rhs) { return lhs.x == rhs.x; }
+};
+
+struct NonTrivialMoveAssignment {
+  int i;
+
+  constexpr NonTrivialMoveAssignment() = default;
+  constexpr NonTrivialMoveAssignment(int set_i) : i(set_i) {}
+
+  constexpr NonTrivialMoveAssignment(NonTrivialMoveAssignment&& rhs) = default;
+  constexpr NonTrivialMoveAssignment& operator=(NonTrivialMoveAssignment&& rhs) noexcept {
+    i = rhs.i;
+    return *this;
+  }
+
+  constexpr friend bool operator==(const NonTrivialMoveAssignment&, const NonTrivialMoveAssignment&) = default;
+};
+
+static_assert(!std::is_trivially_move_assignable_v<NonTrivialMoveAssignment>);
+static_assert(!std::is_trivially_assignable<NonTrivialMoveAssignment&, NonTrivialMoveAssignment&>::value);
+
+struct NonTrivialMoveCtr {
+  int i;
+
+  constexpr NonTrivialMoveCtr() = default;
+  constexpr NonTrivialMoveCtr(int set_i) : i(set_i) {}
+
+  constexpr NonTrivialMoveCtr(NonTrivialMoveCtr&& rhs) noexcept : i(rhs.i) {}
+  constexpr NonTrivialMoveCtr& operator=(NonTrivialMoveCtr&& rhs) = default;
+
+  constexpr friend bool operator==(const NonTrivialMoveCtr&, const NonTrivialMoveCtr&) = default;
+};
+
+static_assert(std::is_trivially_move_assignable_v<NonTrivialMoveCtr>);
+static_assert(!std::is_trivially_copyable_v<NonTrivialMoveCtr>);
+
+struct NonTrivialCopyAssignment {
+  int i;
+
+  constexpr NonTrivialCopyAssignment() = default;
+  constexpr NonTrivialCopyAssignment(int set_i) : i(set_i) {}
+
+  constexpr NonTrivialCopyAssignment(const NonTrivialCopyAssignment& rhs) = default;
+  constexpr NonTrivialCopyAssignment& operator=(const NonTrivialCopyAssignment& rhs) {
+    i = rhs.i;
+    return *this;
+  }
+
+  constexpr friend bool operator==(const NonTrivialCopyAssignment&, const NonTrivialCopyAssignment&) = default;
+};
+
+static_assert(!std::is_trivially_copy_assignable_v<NonTrivialCopyAssignment>);
+
+struct NonTrivialCopyCtr {
+  int i;
+
+  constexpr NonTrivialCopyCtr() = default;
+  constexpr NonTrivialCopyCtr(int set_i) : i(set_i) {}
+
+  constexpr NonTrivialCopyCtr(const NonTrivialCopyCtr& rhs) : i(rhs.i) {}
+  constexpr NonTrivialCopyCtr& operator=(const NonTrivialCopyCtr& rhs) = default;
+
+  constexpr friend bool operator==(const NonTrivialCopyCtr&, const NonTrivialCopyCtr&) = default;
+};
+
+static_assert(std::is_trivially_copy_assignable_v<NonTrivialCopyCtr>);
+static_assert(!std::is_trivially_copyable_v<NonTrivialCopyCtr>);
+
+template <class T>
+constexpr T make(int from) {
+  return T(from);
+}
+
+template <typename PtrT, typename T = std::remove_pointer_t<PtrT>>
+static T make_internal_array[5] = {T(), T(), T(), T(), T()};
+
+template <class T>
+requires std::is_pointer_v<T>
+constexpr T make(int i) {
+  if constexpr (!std::same_as<std::remove_pointer_t<T>, void>) {
+    return make_internal_array<T> + i;
+  } else {
+    return make_internal_array<int> + i;
+  }
+}
+
+template <class InIter, template <class> class SentWrapper, class OutIter, class Func>
+constexpr void test_one(Func func) {
+  using From = typename std::iterator_traits<InIter>::value_type;
+  using To = typename std::iterator_traits<OutIter>::value_type;
+
+  {
+    const size_t N = 5;
+
+    From input[N] = {make<From>(0), make<From>(1), make<From>(2), make<From>(3), make<From>(4)};
+    To output[N];
+
+    auto in     = InIter(input);
+    auto in_end = InIter(input + N);
+    auto sent   = SentWrapper<decltype(in_end)>(in_end);
+    auto out    = OutIter(output);
+
+    func(in, sent, out, N);
+    if constexpr (!std::same_as<To, bool>) {
+      assert(std::equal(input, input + N, output));
+    } else {
+      bool expected[N] = {false, true, true, true, true};
+      assert(std::equal(output, output + N, expected));
+    }
+  }
+
+  {
+    const size_t N = 0;
+
+    From input[1]  = {make<From>(1)};
+    To output[1] = {make<To>(2)};
+
+    auto in     = InIter(input);
+    auto in_end = InIter(input + N);
+    auto sent   = SentWrapper<decltype(in_end)>(in_end);
+    auto out    = OutIter(output);
+
+    func(in, sent, out, N);
+    assert(output[0] == make<To>(2));
+  }
+}
+
+template <class InIter, template <class> class SentWrapper, class OutIter>
+constexpr void test_copy() {
+  // Classic.
+  if constexpr (std::same_as<InIter, SentWrapper<InIter>>) {
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+      std::copy(first, last, out);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+      std::copy_backward(first, last, out + n);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto, auto out, size_t n) {
+      std::copy_n(first, n, out);
+    });
+  }
+
+  // Ranges.
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+    std::ranges::copy(first, last, out);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+    std::ranges::copy_backward(first, last, out + n);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto, auto out, size_t n) {
+    std::ranges::copy_n(first, n, out);
+  });
+}
+
+template <class InIter, template <class> class SentWrapper, class OutIter>
+constexpr void test_move() {
+  if constexpr (std::same_as<InIter, SentWrapper<InIter>>) {
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+      std::move(first, last, out);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+      std::move_backward(first, last, out + n);
+    });
+  }
+
+  // Ranges.
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+    std::ranges::move(first, last, out);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+    std::ranges::move_backward(first, last, out + n);
+  });
+}
+
+template <class From, class To = From>
+constexpr void test_copy_with_type() {
+  using FromIter = contiguous_iterator<From*>;
+  using ToIter = contiguous_iterator<To*>;
+
+  test_copy<FromIter, std::type_identity_t, ToIter>();
+  test_copy<FromIter, sized_sentinel, ToIter>();
+  test_copy<FromIter, std::type_identity_t, To*>();
+  test_copy<From*, std::type_identity_t, To*>();
+  test_copy<From*, std::type_identity_t, ToIter>();
+}
+
+template <class From, class To = From>
+constexpr void test_move_with_type() {
+  using FromIter = contiguous_iterator<From*>;
+  using ToIter = contiguous_iterator<To*>;
+
+  test_move<FromIter, std::type_identity_t, ToIter>();
+  test_move<FromIter, sized_sentinel, ToIter>();
+  test_move<FromIter, std::type_identity_t, To*>();
+  test_move<From*, std::type_identity_t, To*>();
+  test_move<From*, std::type_identity_t, ToIter>();
+}
+
+template <class From, class To>
+constexpr void test_copy_and_move() {
+  test_copy_with_type<From, To>();
+  test_move_with_type<From, To>();
+}
+
+template <class From, class To>
+constexpr void test_both_directions() {
+  test_copy_and_move<From, To>();
+  if (!std::same_as<From, To>) {
+    test_copy_and_move<To, From>();
+  }
+}
+
+constexpr bool test() {
+  test_copy_with_type<NonTrivialCopyAssignment>();
+  test_move_with_type<NonTrivialMoveAssignment>();
+
+  // Copying from a smaller type into a larger type and vice versa.
+  test_both_directions<char, int>();
+  test_both_directions<std::int32_t, std::int64_t>();
+
+  // Copying between types with different representations.
+  test_both_directions<int, float>();
+  // Copying from `bool` to `char` will invoke the optimization, so only check one direction.
+  test_copy_and_move<char, bool>();
+
+  // Copying between different structs with the same represenation (there is no way to guarantee the representation is
+  // the same).
+  test_copy_and_move<S1, S2>();
+  // Copying between different unions with the same represenation.
+  test_copy_and_move<U1, U2>();
+
+  // Copying from a regular pointer to a void pointer (these are not considered trivially copyable).
+  test_copy_and_move<int*, void*>();
+  // Copying from a non-const pointer to a const pointer (these are not considered trivially copyable).
+  test_copy_and_move<int*, const int*>();
+
+  // `memmove` does not support volatile pointers.
+  // (See also https://github.com/llvm/llvm-project/issues/28901).
+  if (!std::is_constant_evaluated()) {
+    test_both_directions<volatile int, int>();
+    test_both_directions<volatile int, volatile int>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_trivial.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_trivial.pass.cpp
new file mode 100644
index 0000000..7505e57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_trivial.pass.cpp
@@ -0,0 +1,357 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// When the debug mode is enabled, we don't unwrap iterators in `std::copy` and similar algorithms so we don't get this
+// optimization.
+// UNSUPPORTED: libcpp-has-debug-mode
+// In the modules build, adding another overload of `memmove` doesn't work.
+// UNSUPPORTED: modules-build
+// GCC complains about "ambiguating" `__builtin_memmove`.
+// UNSUPPORTED: gcc
+
+// <algorithm>
+
+// These tests check that `std::copy` and `std::move` (including their variations like `copy_n`) forward to
+// `memmove` when possible.
+
+#include <cstddef>
+
+struct Foo {
+  int i = 0;
+
+  Foo() = default;
+  Foo(int set_i) : i(set_i) {}
+
+  friend bool operator==(const Foo&, const Foo&) = default;
+};
+
+static bool memmove_called = false;
+
+// This template is a better match than the actual `builtin_memmove` (it can match the pointer type exactly, without an
+// implicit conversion to `void*`), so it should hijack the call inside `std::copy` and similar algorithms if it's made.
+template <class Dst, class Src>
+constexpr void* __builtin_memmove(Dst* dst, Src* src, size_t count) {
+  memmove_called = true;
+  return __builtin_memmove(static_cast<void*>(dst), static_cast<const void*>(src), count);
+}
+
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <iterator>
+#include <limits>
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+
+static_assert(std::is_trivially_copyable_v<Foo>);
+
+// To test pointers to functions.
+void Func() {}
+using FuncPtr = decltype(&Func);
+
+// To test pointers to members.
+struct S {
+  int mem_obj = 0;
+  void MemFunc() {}
+};
+using MemObjPtr = decltype(&S::mem_obj);
+using MemFuncPtr = decltype(&S::MemFunc);
+
+// To test bitfields.
+struct BitfieldS {
+  unsigned char b1 : 3;
+  unsigned char : 2;
+  unsigned char b2 : 5;
+  friend bool operator==(const BitfieldS&, const BitfieldS&) = default;
+};
+
+// To test non-default alignment.
+struct AlignedS {
+  alignas(64) int x;
+  alignas(8) int y;
+  friend bool operator==(const AlignedS&, const AlignedS&) = default;
+};
+
+template <class T>
+T make(int from) {
+  return T(from);
+}
+
+template <class T>
+requires (std::is_pointer_v<T> && !std::is_function_v<std::remove_pointer_t<T>>)
+T make(int i) {
+  static std::remove_pointer_t<T> arr[8];
+  return arr + i;
+}
+
+template <class T>
+requires std::same_as<T, FuncPtr>
+FuncPtr make(int) {
+  return &Func;
+}
+
+template <class T>
+requires std::same_as<T, MemObjPtr>
+MemObjPtr make(int) {
+  return &S::mem_obj;
+}
+
+template <class T>
+requires std::same_as<T, MemFuncPtr>
+MemFuncPtr make(int) {
+  return &S::MemFunc;
+}
+
+template <class T>
+requires std::same_as<T, BitfieldS>
+BitfieldS make(int x) {
+  BitfieldS result = {};
+  result.b1 = x;
+  result.b2 = x;
+  return result;
+}
+
+template <class T>
+requires std::same_as<T, AlignedS>
+AlignedS make(int x) {
+  AlignedS result;
+  result.x = x;
+  result.y = x;
+  return result;
+}
+
+template <class InIter, template <class> class SentWrapper, class OutIter, class Func>
+void test_one(Func func) {
+  using From = std::iter_value_t<InIter>;
+  using To = std::iter_value_t<OutIter>;
+
+  // Normal case.
+  {
+    const size_t N = 4;
+
+    From input[N] = {make<From>(1), make<From>(2), make<From>(3), make<From>(4)};
+    To output[N];
+
+    auto in     = InIter(input);
+    auto in_end = InIter(input + N);
+    auto sent   = SentWrapper<decltype(in_end)>(in_end);
+    auto out    = OutIter(output);
+
+    assert(!memmove_called);
+    func(in, sent, out, N);
+    assert(memmove_called);
+    memmove_called = false;
+
+    assert(std::equal(input, input + N, output, [](const From& lhs, const To& rhs) {
+        // Prevents warnings/errors due to mismatched signed-ness.
+        if constexpr (std::convertible_to<From, To>) {
+          return static_cast<To>(lhs) == rhs;
+        } else if constexpr (std::convertible_to<To, From>) {
+          return lhs == static_cast<From>(rhs);
+        }
+    }));
+  }
+
+  // Empty input sequence.
+  {
+    const size_t N = 0;
+
+    From input[1]  = {make<From>(1)};
+    To output[1] = {make<To>(2)};
+
+    auto in     = InIter(input);
+    auto in_end = InIter(input + N);
+    auto sent   = SentWrapper<decltype(in_end)>(in_end);
+    auto out    = OutIter(output);
+
+    assert(!memmove_called);
+    func(in, sent, out, N);
+
+    assert(memmove_called);
+    memmove_called = false;
+    assert(output[0] == make<To>(2));
+  }
+}
+
+template <class InIter, template <class> class SentWrapper, class OutIter>
+void test_copy_and_move() {
+  // Classic.
+  if constexpr (std::same_as<InIter, SentWrapper<InIter>>) {
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+      std::copy(first, last, out);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+      std::copy_backward(first, last, out + n);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto, auto out, size_t n) {
+      std::copy_n(first, n, out);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+      std::move(first, last, out);
+    });
+    test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+      std::move_backward(first, last, out + n);
+    });
+  }
+
+  // Ranges.
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+    std::ranges::copy(first, last, out);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+    std::ranges::copy_backward(first, last, out + n);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto, auto out, size_t n) {
+    std::ranges::copy_n(first, n, out);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t) {
+    std::ranges::move(first, last, out);
+  });
+  test_one<InIter, SentWrapper, OutIter>([](auto first, auto last, auto out, size_t n) {
+    std::ranges::move_backward(first, last, out + n);
+  });
+}
+
+template <class From, class To, template <class> class SentWrapper, bool BothDirections = !std::same_as<From, To>>
+void test_all_permutations_from_to_sent() {
+  test_copy_and_move<From*, SentWrapper, To*>();
+  test_copy_and_move<contiguous_iterator<From*>, SentWrapper, To*>();
+  test_copy_and_move<From*, SentWrapper, contiguous_iterator<To*>>();
+  test_copy_and_move<contiguous_iterator<From*>, SentWrapper, contiguous_iterator<To*>>();
+
+  if (BothDirections) {
+    test_copy_and_move<To*, SentWrapper, From*>();
+    test_copy_and_move<contiguous_iterator<To*>, SentWrapper, From*>();
+    test_copy_and_move<To*, SentWrapper, contiguous_iterator<From*>>();
+    test_copy_and_move<contiguous_iterator<To*>, SentWrapper, contiguous_iterator<From*>>();
+  }
+}
+
+void test_different_signedness() {
+  auto check = [](auto alg) {
+    // Signed -> unsigned.
+    {
+      constexpr int N = 3;
+      constexpr auto min_value = std::numeric_limits<int>::min();
+
+      int in[N] = {-1, min_value / 2, min_value};
+      unsigned int out[N];
+      unsigned int expected[N] = {
+        static_cast<unsigned int>(in[0]),
+        static_cast<unsigned int>(in[1]),
+        static_cast<unsigned int>(in[2]),
+      };
+
+      assert(!memmove_called);
+      alg(in, in + N, out, N);
+      assert(memmove_called);
+      memmove_called = false;
+
+      assert(std::equal(out, out + N, expected));
+    }
+
+    // Unsigned -> signed.
+    {
+      constexpr int N = 3;
+      constexpr auto max_signed = std::numeric_limits<int>::max();
+      constexpr auto max_unsigned = std::numeric_limits<unsigned int>::max();
+
+      unsigned int in[N] = {static_cast<unsigned int>(max_signed) + 1, max_unsigned / 2, max_unsigned};
+      int out[N];
+      int expected[N] = {
+        static_cast<int>(in[0]),
+        static_cast<int>(in[1]),
+        static_cast<int>(in[2]),
+      };
+
+      assert(!memmove_called);
+      alg(in, in + N, out, N);
+      assert(memmove_called);
+      memmove_called = false;
+
+      assert(std::equal(out, out + N, expected));
+    }
+  };
+
+  check([](auto first, auto last, auto out, size_t) {
+    std::copy(first, last, out);
+  });
+  check([](auto first, auto last, auto out, size_t n) {
+    std::copy_backward(first, last, out + n);
+  });
+  check([](auto first, auto, auto out, size_t n) {
+    std::copy_n(first, n, out);
+  });
+  check([](auto first, auto last, auto out, size_t) {
+    std::move(first, last, out);
+  });
+  check([](auto first, auto last, auto out, size_t n) {
+    std::move_backward(first, last, out + n);
+  });
+
+  // Ranges.
+  check([](auto first, auto last, auto out, size_t) {
+    std::ranges::copy(first, last, out);
+  });
+  check([](auto first, auto last, auto out, size_t n) {
+    std::ranges::copy_backward(first, last, out + n);
+  });
+  check([](auto first, auto, auto out, size_t n) {
+    std::ranges::copy_n(first, n, out);
+  });
+  check([](auto first, auto last, auto out, size_t) {
+    std::ranges::move(first, last, out);
+  });
+  check([](auto first, auto last, auto out, size_t n) {
+    std::ranges::move_backward(first, last, out + n);
+  });
+}
+
+void test() {
+  // Built-in.
+  test_all_permutations_from_to_sent<int, int, std::type_identity_t>();
+  // User-defined.
+  test_all_permutations_from_to_sent<Foo, Foo, std::type_identity_t>();
+
+  // Conversions.
+  test_all_permutations_from_to_sent<char32_t, std::int32_t, sized_sentinel>();
+  test_all_permutations_from_to_sent<std::int32_t, std::uint32_t, sized_sentinel>();
+  // Conversion from `bool` to `char` invokes the optimization (the set of values for `char` is a superset of the set of
+  // values for `bool`), but the other way round cannot.
+  test_all_permutations_from_to_sent<bool, char, sized_sentinel, /*BothDirections=*/false>();
+
+  // Copying between regular pointers.
+  test_copy_and_move<int**, std::type_identity_t, int**>();
+
+  // Copying between pointers to functions.
+  test_copy_and_move<FuncPtr*, std::type_identity_t, FuncPtr*>();
+
+  // Copying between pointers to members.
+  test_copy_and_move<MemObjPtr*, std::type_identity_t, MemObjPtr*>();
+  test_copy_and_move<MemFuncPtr*, std::type_identity_t, MemFuncPtr*>();
+
+  // Copying structs with bitfields.
+  test_copy_and_move<BitfieldS*, std::type_identity_t, BitfieldS*>();
+
+  // Copying objects with non-default alignment.
+  test_copy_and_move<AlignedS*, std::type_identity_t, AlignedS*>();
+
+  // Copying integers with different signedness produces the same results as built-in assignment.
+  test_different_signedness();
+}
+
+int main(int, char**) {
+  test();
+  // The test relies on a global variable, so it cannot be made `constexpr`; the `memmove` optimization is not used in
+  // `constexpr` mode anyway.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_unwrap_reverse.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_unwrap_reverse.pass.cpp
new file mode 100644
index 0000000..bb01cc4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.modifying.operations/copy_move_unwrap_reverse.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// These tests checks that `std::copy` and `std::move` (including their variations like `copy_n`) can unwrap multiple
+// layers of reverse iterators.
+
+#include <algorithm>
+#include <cassert>
+#include <cstdint>
+#include <iterator>
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+
+template <size_t N, class Iter>
+requires (N == 0)
+constexpr auto wrap_n_times(Iter i) {
+  return i;
+}
+
+template <size_t N, class Iter>
+requires (N != 0)
+constexpr auto wrap_n_times(Iter i) {
+  return std::make_reverse_iterator(wrap_n_times<N - 1>(i));
+}
+
+static_assert(std::is_same_v<decltype(wrap_n_times<2>(std::declval<int*>())),
+                             std::reverse_iterator<std::reverse_iterator<int*>>>);
+
+template <class InIter, template <class> class SentWrapper, class OutIter, size_t W1, size_t W2, class Func>
+constexpr void test_one(Func func) {
+  using From = std::iter_value_t<InIter>;
+  using To = std::iter_value_t<OutIter>;
+
+  const size_t N = 4;
+
+  From input[N] = {{1}, {2}, {3}, {4}};
+  To output[N];
+
+  auto in     = wrap_n_times<W1>(InIter(input));
+  auto in_end = wrap_n_times<W1>(InIter(input + N));
+  auto sent   = SentWrapper<decltype(in_end)>(in_end);
+  auto out    = wrap_n_times<W2>(OutIter(output));
+
+  func(in, sent, out, N);
+
+  assert(std::equal(input, input + N, output, [](const From& lhs, const To& rhs) {
+        // Prevents warnings/errors due to mismatched signed-ness.
+        return lhs == static_cast<From>(rhs);
+    }));
+}
+
+template <class InIter, template <class> class SentWrapper, class OutIter, size_t W1, size_t W2>
+constexpr void test_copy_and_move() {
+  // Classic.
+  if constexpr (std::same_as<InIter, SentWrapper<InIter>>) {
+    test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t) {
+      std::copy(first, last, out);
+    });
+    test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t n) {
+      std::copy_backward(first, last, out + n);
+    });
+    test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto, auto out, size_t n) {
+      std::copy_n(first, n, out);
+    });
+    test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t) {
+      std::move(first, last, out);
+    });
+    test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t n) {
+      std::move_backward(first, last, out + n);
+    });
+  }
+
+  // Ranges.
+  test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t) {
+    std::ranges::copy(first, last, out);
+  });
+  test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t n) {
+    std::ranges::copy_backward(first, last, out + n);
+  });
+  test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto, auto out, size_t n) {
+    std::ranges::copy_n(first, n, out);
+  });
+  test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t) {
+    std::ranges::move(first, last, out);
+  });
+  test_one<InIter, SentWrapper, OutIter, W1, W2>([](auto first, auto last, auto out, size_t n) {
+    std::ranges::move_backward(first, last, out + n);
+  });
+}
+
+template <size_t W1, size_t W2, class From, class To, template <class> class SentWrapper>
+constexpr void test_all_permutations_with_counts_from_to_sent() {
+  test_copy_and_move<From*, SentWrapper, To*, W1, W2>();
+  test_copy_and_move<contiguous_iterator<From*>, SentWrapper, To*, W1, W2>();
+  test_copy_and_move<From*, SentWrapper, contiguous_iterator<To*>, W1, W2>();
+  test_copy_and_move<contiguous_iterator<From*>, SentWrapper, contiguous_iterator<To*>, W1, W2>();
+
+  if (!std::same_as<From, To>) {
+    test_copy_and_move<To*, SentWrapper, From*, W1, W2>();
+    test_copy_and_move<contiguous_iterator<To*>, SentWrapper, From*, W1, W2>();
+    test_copy_and_move<To*, SentWrapper, contiguous_iterator<From*>, W1, W2>();
+    test_copy_and_move<contiguous_iterator<To*>, SentWrapper, contiguous_iterator<From*>, W1, W2>();
+  }
+}
+
+template <size_t W1, size_t W2>
+constexpr void test_all_permutations_with_counts() {
+  test_all_permutations_with_counts_from_to_sent<W1, W2, int, int, std::type_identity_t>();
+  test_all_permutations_with_counts_from_to_sent<W1, W2, int, int, sized_sentinel>();
+  test_all_permutations_with_counts_from_to_sent<W1, W2, std::int32_t, std::uint32_t, std::type_identity_t>();
+  test_all_permutations_with_counts_from_to_sent<W1, W2, std::int32_t, std::uint32_t, sized_sentinel>();
+}
+
+constexpr bool test() {
+  test_all_permutations_with_counts<0, 0>();
+  test_all_permutations_with_counts<0, 2>();
+  test_all_permutations_with_counts<2, 0>();
+  test_all_permutations_with_counts<2, 2>();
+  test_all_permutations_with_counts<2, 4>();
+  test_all_permutations_with_counts<4, 4>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/alg.heap.operations/make.heap/complexity.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/alg.heap.operations/make.heap/complexity.pass.cpp
new file mode 100644
index 0000000..a878508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/alg.heap.operations/make.heap/complexity.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <algorithm>
+
+// template<class Iter>
+//   void make_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <random>
+
+#include "test_macros.h"
+
+struct Stats {
+  int compared = 0;
+  int copied = 0;
+  int moved = 0;
+} stats;
+
+struct MyInt {
+  int value;
+  explicit MyInt(int xval) : value(xval) {}
+  MyInt(const MyInt& other) : value(other.value) { ++stats.copied; }
+  MyInt(MyInt&& other) : value(other.value) { ++stats.moved; }
+  MyInt& operator=(const MyInt& other) {
+    value = other.value;
+    ++stats.copied;
+    return *this;
+  }
+  MyInt& operator=(MyInt&& other) {
+    value = other.value;
+    ++stats.moved;
+    return *this;
+  }
+  friend bool operator<(const MyInt& a, const MyInt& b) {
+    ++stats.compared;
+    return a.value < b.value;
+  }
+};
+
+int main(int, char**)
+{
+  const int N = 100'000;
+  std::vector<MyInt> v;
+  v.reserve(N);
+  std::mt19937 g;
+  for (int i = 0; i < N; ++i)
+    v.emplace_back(g());
+
+  // The exact stats of our current implementation are recorded here.
+  // If something changes to make them go a bit up or down, that's probably fine,
+  // and we can just update this test.
+  // But if they suddenly leap upward, that's a bad thing.
+
+  stats = {};
+  std::make_heap(v.begin(), v.end());
+  assert(stats.copied == 0);
+  assert(stats.moved == 153'486);
+#ifndef _LIBCPP_ENABLE_DEBUG_MODE
+  assert(stats.compared == 188'285);
+#endif
+
+  assert(std::is_heap(v.begin(), v.end()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/alg.heap.operations/sort.heap/complexity.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/alg.heap.operations/sort.heap/complexity.pass.cpp
new file mode 100644
index 0000000..0ed37a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/alg.heap.operations/sort.heap/complexity.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <algorithm>
+
+// template<class Iter>
+//   void sort_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <random>
+
+#include "test_macros.h"
+
+struct Stats {
+  int compared = 0;
+  int copied = 0;
+  int moved = 0;
+} stats;
+
+struct MyInt {
+  int value;
+  explicit MyInt(int xval) : value(xval) {}
+  MyInt(const MyInt& other) : value(other.value) { ++stats.copied; }
+  MyInt(MyInt&& other) : value(other.value) { ++stats.moved; }
+  MyInt& operator=(const MyInt& other) {
+    value = other.value;
+    ++stats.copied;
+    return *this;
+  }
+  MyInt& operator=(MyInt&& other) {
+    value = other.value;
+    ++stats.moved;
+    return *this;
+  }
+  friend bool operator<(const MyInt& a, const MyInt& b) {
+    ++stats.compared;
+    return a.value < b.value;
+  }
+};
+
+int main(int, char**)
+{
+  const int N = 100'000;
+  std::vector<MyInt> v;
+  v.reserve(N);
+  std::mt19937 g;
+  for (int i = 0; i < N; ++i)
+    v.emplace_back(g());
+  std::make_heap(v.begin(), v.end());
+
+  // The exact stats of our current implementation are recorded here.
+  // If something changes to make them go a bit up or down, that's probably fine,
+  // and we can just update this test.
+  // But if they suddenly leap upward, that's a bad thing.
+
+  stats = {};
+  std::sort_heap(v.begin(), v.end());
+  assert(stats.copied == 0);
+  assert(stats.moved == 1'764'997);
+#ifndef _LIBCPP_ENABLE_DEBUG_MODE
+  assert(stats.compared == 1'534'701);
+#endif
+
+  assert(std::is_sorted(v.begin(), v.end()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/assert.min.max.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/assert.min.max.pass.cpp
new file mode 100644
index 0000000..47b3c77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/alg.sorting/assert.min.max.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <algorithm>
+#include <array>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::initializer_list<int> init_list{};
+  TEST_LIBCPP_ASSERT_FAILURE(std::ranges::minmax(init_list),
+                             "initializer_list has to contain at least one element");
+
+  TEST_LIBCPP_ASSERT_FAILURE(std::ranges::minmax(std::array<int, 0>{}),
+                             "range has to contain at least one element");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/bad_iterator_traits.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/bad_iterator_traits.verify.cpp
new file mode 100644
index 0000000..61e1712
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/bad_iterator_traits.verify.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// std::sort
+
+#include <algorithm>
+#include <iterator>
+#include <type_traits>
+#include <utility>
+
+struct BadIter {
+  struct Value {
+    friend bool operator==(const Value& x, const Value& y);
+    friend bool operator!=(const Value& x, const Value& y);
+    friend bool operator< (const Value& x, const Value& y);
+    friend bool operator<=(const Value& x, const Value& y);
+    friend bool operator> (const Value& x, const Value& y);
+    friend bool operator>=(const Value& x, const Value& y);
+    friend void swap(Value, Value);
+  };
+
+  using iterator_category = std::random_access_iterator_tag;
+  using value_type = Value;
+  using reference = Value&;
+  using difference_type = long;
+  using pointer = Value*;
+
+  Value operator*() const; // Not `Value&`.
+  reference operator[](difference_type n) const;
+
+  BadIter& operator++();
+  BadIter& operator--();
+  BadIter operator++(int);
+  BadIter operator--(int);
+
+  BadIter& operator+=(difference_type n);
+  BadIter& operator-=(difference_type n);
+  friend BadIter operator+(BadIter x, difference_type n);
+  friend BadIter operator+(difference_type n, BadIter x);
+  friend BadIter operator-(BadIter x, difference_type n);
+  friend difference_type operator-(BadIter x, BadIter y);
+
+  friend bool operator==(const BadIter& x, const BadIter& y);
+  friend bool operator!=(const BadIter& x, const BadIter& y);
+  friend bool operator< (const BadIter& x, const BadIter& y);
+  friend bool operator<=(const BadIter& x, const BadIter& y);
+  friend bool operator> (const BadIter& x, const BadIter& y);
+  friend bool operator>=(const BadIter& x, const BadIter& y);
+};
+
+// Verify that iterators with incorrect `iterator_traits` are rejected. This protects against potential undefined
+// behavior when these iterators are passed to standard algorithms.
+void test() {
+  std::sort(BadIter(), BadIter());
+  //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}It looks like your iterator's `iterator_traits<It>::reference` does not match the return type of dereferencing the iterator}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/callable.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/callable.verify.cpp
new file mode 100644
index 0000000..da87ecd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/callable.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// check that the classical algorithms with non-callable comparators fail
+
+#include <algorithm>
+
+void f() {
+  struct S {
+    int i;
+
+    S(int i_) : i(i_) {}
+
+    bool compare(const S&) const;
+  };
+
+  S a[] = {1, 2, 3, 4};
+  (void) std::lower_bound(a, a + 4, 0, &S::compare); // expected-error@*:* {{The comparator has to be callable}}
+  (void) std::minmax({S{1}}, &S::compare); // expected-error@*:* {{The comparator has to be callable}}
+  (void) std::minmax_element(a, a + 4, &S::compare); // expected-error@*:* {{The comparator has to be callable}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/debug_less.inconsistent.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/debug_less.inconsistent.pass.cpp
new file mode 100644
index 0000000..4f7d479
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/debug_less.inconsistent.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class _Compare> struct __debug_less
+
+// Make sure __debug_less asserts when the comparator is not consistent.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <algorithm>
+#include <iterator>
+
+#include "check_assertion.h"
+
+template <int ID>
+struct MyType {
+    int value;
+    explicit MyType(int xvalue = 0) : value(xvalue) {}
+};
+
+template <int ID1, int ID2>
+bool operator<(MyType<ID1> const& LHS, MyType<ID2> const& RHS) {
+    return LHS.value < RHS.value;
+}
+
+template <class ValueType>
+struct BadComparator {
+    bool operator()(ValueType const&, ValueType const&) const {
+        return true;
+    }
+};
+
+int main(int, char**) {
+    typedef MyType<0> MT0;
+    MT0 one(1);
+    MT0 two(2);
+
+    BadComparator<MT0> c;
+    std::__debug_less<BadComparator<MT0>> d(c);
+
+    TEST_LIBCPP_ASSERT_FAILURE(d(one, two), "Comparator does not induce a strict weak ordering");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/debug_less.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/debug_less.pass.cpp
new file mode 100644
index 0000000..89f12e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/debug_less.pass.cpp
@@ -0,0 +1,260 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class _Compare> struct __debug_less
+
+// __debug_less checks that a comparator actually provides a strict-weak ordering.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "check_assertion.h"
+
+template <int ID>
+struct MyType {
+    int value;
+    explicit MyType(int xvalue = 0) : value(xvalue) {}
+};
+
+template <int ID1, int ID2>
+bool operator<(MyType<ID1> const& LHS, MyType<ID2> const& RHS) {
+    return LHS.value < RHS.value;
+}
+
+struct CompareBase {
+    static int called;
+    static void reset() {
+        called = 0;
+    }
+};
+
+int CompareBase::called = 0;
+
+template <class ValueType>
+struct GoodComparator : public CompareBase {
+    bool operator()(ValueType const& lhs, ValueType const& rhs) const {
+        ++CompareBase::called;
+        return lhs < rhs;
+    }
+};
+
+template <class T1, class T2>
+struct TwoWayHomoComparator : public CompareBase {
+    bool operator()(T1 const& lhs, T2 const& rhs) const {
+        ++CompareBase::called;
+        return lhs < rhs;
+    }
+
+    bool operator()(T2 const& lhs, T1 const& rhs) const {
+        ++CompareBase::called;
+        return lhs < rhs;
+    }
+};
+
+template <class T1, class T2>
+struct OneWayHomoComparator : public CompareBase {
+    bool operator()(T1 const& lhs, T2 const& rhs) const {
+        ++CompareBase::called;
+        return lhs < rhs;
+    }
+};
+
+using std::__debug_less;
+
+typedef MyType<0> MT0;
+typedef MyType<1> MT1;
+
+void test_passing() {
+    int& called = CompareBase::called;
+    called = 0;
+    MT0 one(1);
+    MT0 two(2);
+    MT1 three(3);
+    MT1 four(4);
+
+    {
+        typedef GoodComparator<MT0> C;
+        typedef __debug_less<C> D;
+
+        C c;
+        D d(c);
+
+        assert(d(one, two) == true);
+        assert(called == 2);
+        called = 0;
+
+        assert(d(one, one) == false);
+        assert(called == 1);
+        called = 0;
+
+        assert(d(two, one) == false);
+        assert(called == 1);
+        called = 0;
+    }
+    {
+        typedef TwoWayHomoComparator<MT0, MT1> C;
+        typedef __debug_less<C> D;
+        C c;
+        D d(c);
+
+        assert(d(one, three) == true);
+        assert(called == 2);
+        called = 0;
+
+        assert(d(three, one) == false);
+        assert(called == 1);
+        called = 0;
+    }
+    {
+        typedef OneWayHomoComparator<MT0, MT1> C;
+        typedef __debug_less<C> D;
+        C c;
+        D d(c);
+
+        assert(d(one, three) == true);
+        assert(called == 1);
+        called = 0;
+    }
+}
+
+template <int>
+struct Tag {
+  explicit Tag(int v) : value(v) {}
+  int value;
+};
+
+template <class = void>
+struct FooImp {
+  explicit FooImp(int x) : x_(x) {}
+  int x_;
+};
+
+template <class T>
+inline bool operator<(FooImp<T> const& x, Tag<0> y) {
+    return x.x_ < y.value;
+}
+
+template <class T>
+inline bool operator<(Tag<0>, FooImp<T> const&) {
+    static_assert(sizeof(FooImp<T>) != sizeof(FooImp<T>), "should not be instantiated");
+    return false;
+}
+
+template <class T>
+inline bool operator<(Tag<1> x, FooImp<T> const& y) {
+    return x.value < y.x_;
+}
+
+template <class T>
+inline bool operator<(FooImp<T> const&, Tag<1>) {
+    static_assert(sizeof(FooImp<T>) != sizeof(FooImp<T>), "should not be instantiated");
+    return false;
+}
+
+typedef FooImp<> Foo;
+
+// Test that we don't attempt to call the comparator with the arguments reversed
+// for upper_bound and lower_bound since the comparator or type is not required
+// to support it, nor does it require the range to have a strict weak ordering.
+// See llvm.org/PR39458
+void test_upper_and_lower_bound() {
+    Foo table[] = {Foo(1), Foo(2), Foo(3), Foo(4), Foo(5)};
+    {
+        Foo* iter = std::lower_bound(std::begin(table), std::end(table), Tag<0>(3));
+        assert(iter == (table + 2));
+    }
+    {
+        Foo* iter = std::upper_bound(std::begin(table), std::end(table), Tag<1>(3));
+        assert(iter == (table + 3));
+    }
+}
+
+struct NonConstArgCmp {
+    bool operator()(int& x, int &y) const {
+        return x < y;
+    }
+};
+
+void test_non_const_arg_cmp() {
+    {
+        NonConstArgCmp cmp;
+        __debug_less<NonConstArgCmp> dcmp(cmp);
+        int x = 0, y = 1;
+        assert(dcmp(x, y));
+        assert(!dcmp(y, x));
+    }
+    {
+        NonConstArgCmp cmp;
+        int arr[] = {5, 4, 3, 2, 1};
+        std::sort(std::begin(arr), std::end(arr), cmp);
+        assert(std::is_sorted(std::begin(arr), std::end(arr)));
+    }
+}
+
+struct ValueIterator {
+    typedef std::input_iterator_tag iterator_category;
+    typedef size_t value_type;
+    typedef ptrdiff_t difference_type;
+    typedef size_t reference;
+    typedef size_t* pointer;
+
+    ValueIterator() { }
+
+    reference operator*() { return 0; }
+    ValueIterator& operator++() { return *this; }
+
+    friend bool operator==(ValueIterator, ValueIterator) { return true; }
+    friend bool operator!=(ValueIterator, ValueIterator) { return false; }
+};
+
+void test_value_iterator() {
+    // Ensure no build failures when iterators return values, not references.
+    assert(0 == std::lexicographical_compare(ValueIterator(), ValueIterator(),
+                                             ValueIterator(), ValueIterator()));
+}
+
+void test_value_categories() {
+    std::less<int> l;
+    std::__debug_less<std::less<int> > dl(l);
+    int lvalue = 42;
+    const int const_lvalue = 101;
+
+    assert(dl(lvalue, const_lvalue));
+    assert(dl(/*rvalue*/1, lvalue));
+    assert(dl(static_cast<int&&>(1), static_cast<const int&&>(2)));
+}
+
+#if TEST_STD_VER > 11
+constexpr bool test_constexpr() {
+    std::less<> cmp{};
+    __debug_less<std::less<> > dcmp(cmp);
+    assert(dcmp(1, 2));
+    assert(!dcmp(1, 1));
+    return true;
+}
+#endif
+
+int main(int, char**) {
+    test_passing();
+    test_upper_and_lower_bound();
+    test_non_const_arg_cmp();
+    test_value_iterator();
+    test_value_categories();
+#if TEST_STD_VER > 11
+    static_assert(test_constexpr(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/half_positive.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/half_positive.pass.cpp
new file mode 100644
index 0000000..9976796
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/half_positive.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// __half_positive divides an integer number by 2 as unsigned number for known types.
+// It can be an important optimization for lower bound, for example.
+
+#include <algorithm>
+#include <cassert>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "user_defined_integral.h"
+
+namespace {
+
+template <class IntType, class UnderlyingType = IntType>
+TEST_CONSTEXPR bool test(IntType max_v = IntType(std::numeric_limits<UnderlyingType>::max())) {
+    return std::__half_positive(max_v) == max_v / 2;
+}
+
+}  // namespace
+
+int main(int, char**)
+{
+    {
+        assert(test<char>());
+        assert(test<int>());
+        assert(test<long>());
+        assert((test<UserDefinedIntegral<int>, int>()));
+        assert(test<size_t>());
+#if !defined(TEST_HAS_NO_INT128)
+        assert(test<__int128_t>());
+#endif // !defined(TEST_HAS_NO_INT128)
+    }
+
+#if TEST_STD_VER >= 11
+    {
+        static_assert(test<char>(), "");
+        static_assert(test<int>(), "");
+        static_assert(test<long>(), "");
+        static_assert(test<size_t>(), "");
+#if !defined(TEST_HAS_NO_INT128)
+        static_assert(test<__int128_t>(), "");
+#endif // !defined(TEST_HAS_NO_INT128)
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/nth_element_stability.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/nth_element_stability.pass.cpp
new file mode 100644
index 0000000..7124e54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/nth_element_stability.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// Test std::nth_element stability randomization
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+
+struct MyType {
+  int value = 0;
+  constexpr bool operator<(const MyType& other) const { return value < other.value; }
+};
+
+std::vector<MyType> deterministic() {
+  static constexpr int kSize = 100;
+  std::vector<MyType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = (i % 2 ? i : kSize / 2 + i);
+  }
+  std::__nth_element<std::_ClassicAlgPolicy>(v.begin(), v.begin() + kSize / 2, v.end(), std::less<MyType>());
+  return v;
+}
+
+void test_randomization() {
+  static constexpr int kSize = 100;
+  std::vector<MyType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = (i % 2 ? i : kSize / 2 + i);
+  }
+  auto deterministic_v = deterministic();
+  std::nth_element(v.begin(), v.begin() + kSize / 2, v.end());
+  bool all_equal = true;
+  for (int i = 0; i < kSize; ++i) {
+    if (v[i].value != deterministic_v[i].value) {
+      all_equal = false;
+    }
+  }
+  assert(!all_equal);
+}
+
+void test_same() {
+  static constexpr int kSize = 100;
+  std::vector<MyType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = (i % 2 ? i : kSize / 2 + i);
+  }
+  auto snapshot_v = v;
+  auto snapshot_custom_v = v;
+  std::nth_element(v.begin(), v.begin() + kSize / 2, v.end());
+  std::nth_element(snapshot_v.begin(), snapshot_v.begin() + kSize / 2, snapshot_v.end());
+  std::nth_element(snapshot_custom_v.begin(), snapshot_custom_v.begin() + kSize / 2, snapshot_custom_v.end(), std::less<MyType>());
+  bool all_equal = true;
+  for (int i = 0; i < kSize; ++i) {
+    if (v[i].value != snapshot_v[i].value || v[i].value != snapshot_custom_v[i].value) {
+      all_equal = false;
+    }
+    if (i < kSize / 2) {
+      assert(v[i].value <= v[kSize / 2].value);
+    }
+  }
+  assert(all_equal);
+}
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+  std::array<MyType, 10> v;
+  for (int i = 9; i >= 0; --i) {
+    v[9 - i].value = i;
+  }
+  std::nth_element(v.begin(), v.begin() + 5, v.end());
+  return std::is_partitioned(v.begin(), v.end(), [&](const MyType& m) { return m.value <= v[5].value; });
+}
+#endif
+
+int main(int, char**) {
+  test_randomization();
+  test_same();
+#if TEST_STD_VER > 17
+  static_assert(test_constexpr(), "");
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/partial_sort_stability.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/partial_sort_stability.pass.cpp
new file mode 100644
index 0000000..3f9a5a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/partial_sort_stability.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// Test std::partial_sort stability randomization
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+
+struct MyType {
+  int value = 0;
+  constexpr bool operator<(const MyType& other) const { return value < other.value; }
+};
+
+std::vector<MyType> deterministic() {
+  static constexpr int kSize = 100;
+  std::vector<MyType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = (i % 2 ? 1 : kSize / 2 + i);
+  }
+  auto comp = std::less<MyType>();
+  std::__partial_sort_impl<std::_ClassicAlgPolicy>(v.begin(), v.begin() + kSize / 2, v.end(), comp);
+  return v;
+}
+
+void test_randomization() {
+  static constexpr int kSize = 100;
+  std::vector<MyType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = (i % 2 ? 1 : kSize / 2 + i);
+  }
+  auto deterministic_v = deterministic();
+  std::partial_sort(v.begin(), v.begin() + kSize / 2, v.end());
+  bool all_equal = true;
+  for (int i = 0; i < kSize; ++i) {
+    if (v[i].value != deterministic_v[i].value) {
+      all_equal = false;
+    }
+  }
+  assert(!all_equal);
+}
+
+void test_same() {
+  static constexpr int kSize = 100;
+  std::vector<MyType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = (i % 2 ? 1 : kSize / 2 + i);
+  }
+  auto snapshot_v = v;
+  auto snapshot_custom_v = v;
+  std::partial_sort(v.begin(), v.begin() + kSize / 2, v.end());
+  std::partial_sort(snapshot_v.begin(), snapshot_v.begin() + kSize / 2, snapshot_v.end());
+  std::partial_sort(snapshot_custom_v.begin(), snapshot_custom_v.begin() + kSize / 2, snapshot_custom_v.end(), std::less<MyType>());
+  bool all_equal = true;
+  for (int i = 0; i < kSize; ++i) {
+    if (v[i].value != snapshot_v[i].value || v[i].value != snapshot_custom_v[i].value) {
+      all_equal = false;
+    }
+    if (i < kSize / 2) {
+      assert(v[i].value == 1);
+    }
+  }
+  assert(all_equal);
+}
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+  std::array<MyType, 10> v;
+  for (int i = 9; i >= 0; --i) {
+    v[9 - i].value = i;
+  }
+  std::partial_sort(v.begin(), v.begin() + 5, v.end());
+  return std::is_sorted(v.begin(), v.begin() + 5);
+}
+#endif
+
+int main(int, char**) {
+  test_randomization();
+  test_same();
+#if TEST_STD_VER > 17
+  static_assert(test_constexpr(), "");
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/ranges_robust_against_copying_comparators.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/ranges_robust_against_copying_comparators.pass.cpp
new file mode 100644
index 0000000..d5d978d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/ranges_robust_against_copying_comparators.pass.cpp
@@ -0,0 +1,240 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// this test checks that the comparators in the ranges algorithms aren't copied/moved
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct Less {
+    int *copies_;
+    constexpr explicit Less(int *copies) : copies_(copies) {}
+    constexpr Less(const Less& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr Less& operator=(const Less&) = default;
+    constexpr bool operator()(void*, void*) const { return false; }
+};
+
+struct Equal {
+    int *copies_;
+    constexpr explicit Equal(int *copies) : copies_(copies) {}
+    constexpr Equal(const Equal& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr Equal& operator=(const Equal&) = default;
+    constexpr bool operator()(void*, void*) const { return true; }
+};
+
+struct UnaryVoid {
+    int *copies_;
+    constexpr explicit UnaryVoid(int *copies) : copies_(copies) {}
+    constexpr UnaryVoid(const UnaryVoid& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr UnaryVoid& operator=(const UnaryVoid&) = default;
+    constexpr void operator()(void*) const {}
+};
+
+struct UnaryTrue {
+    int *copies_;
+    constexpr explicit UnaryTrue(int *copies) : copies_(copies) {}
+    constexpr UnaryTrue(const UnaryTrue& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr UnaryTrue& operator=(const UnaryTrue&) = default;
+    constexpr bool operator()(void*) const { return true; }
+};
+
+struct NullaryValue {
+    int *copies_;
+    constexpr explicit NullaryValue(int *copies) : copies_(copies) {}
+    constexpr NullaryValue(const NullaryValue& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr NullaryValue& operator=(const NullaryValue&) = default;
+    constexpr std::nullptr_t operator()() const { return nullptr; }
+};
+
+struct UnaryTransform {
+    int *copies_;
+    constexpr explicit UnaryTransform(int *copies) : copies_(copies) {}
+    constexpr UnaryTransform(const UnaryTransform& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr UnaryTransform& operator=(const UnaryTransform&) = default;
+    constexpr std::nullptr_t operator()(void*) const { return nullptr; }
+};
+
+struct BinaryTransform {
+    int *copies_;
+    constexpr explicit BinaryTransform(int *copies) : copies_(copies) {}
+    constexpr BinaryTransform(const BinaryTransform& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr BinaryTransform& operator=(const BinaryTransform&) = default;
+    constexpr std::nullptr_t operator()(void*, void*) const { return nullptr; }
+};
+
+constexpr bool all_the_algorithms()
+{
+    void *a[10] = {};
+    void *b[10] = {};
+    void *half[5] = {};
+    void **first = a;
+    void **mid = a+5;
+    void **last = a+10;
+    void **first2 = b;
+    void **mid2 = b+5;
+    void **last2 = b+10;
+    void *value = nullptr;
+    int count = 1;
+
+    int copies = 0;
+    (void)std::ranges::adjacent_find(first, last, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::adjacent_find(a, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::all_of(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::all_of(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::any_of(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::any_of(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::binary_search(first, last, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::binary_search(a, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::clamp(value, value, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::count_if(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::count_if(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::copy_if(first, last, first2, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::copy_if(a, first2, UnaryTrue(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 20
+    //(void)std::ranges::ends_with(first, last, first2, last2, Equal(&copies)); assert(copies == 0);
+#endif
+    (void)std::ranges::equal(first, last, first2, last2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::equal(a, b, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::equal_range(first, last, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::equal_range(a, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::find_end(first, last, first2, mid2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::find_end(a, b, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::find_first_of(first, last, first2, last2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::find_first_of(a, b, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if_not(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if_not(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::for_each(first, last, UnaryVoid(&copies)); assert(copies == 1); copies = 0;
+    (void)std::ranges::for_each(a, UnaryVoid(&copies)); assert(copies == 1); copies = 0;
+    (void)std::ranges::for_each_n(first, count, UnaryVoid(&copies)); assert(copies == 1); copies = 0;
+    (void)std::ranges::generate(first, last, NullaryValue(&copies)); assert(copies == 0);
+    (void)std::ranges::generate(a, NullaryValue(&copies)); assert(copies == 0);
+    (void)std::ranges::generate_n(first, count, NullaryValue(&copies)); assert(copies == 0);
+    (void)std::ranges::includes(first, last, first2, last2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::includes(a, b, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap_until(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap_until(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_partitioned(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::is_partitioned(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::is_permutation(first, last, first2, last2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::is_permutation(a, b, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted_until(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted_until(a, Less(&copies)); assert(copies == 0);
+    if (!std::is_constant_evaluated()) { (void)std::ranges::inplace_merge(first, mid, last, Less(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::inplace_merge(a, mid, Less(&copies)); assert(copies == 0); }
+    (void)std::ranges::lexicographical_compare(first, last, first2, last2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::lexicographical_compare(a, b, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::lower_bound(first, last, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::lower_bound(a, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::make_heap(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::make_heap(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::max(value, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::max({ value, value }, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::max(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::max_element(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::max_element(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::merge(first, mid, mid, last, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::merge(half, half, b, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::min(value, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::min({ value, value }, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::min(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::min_element(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::min_element(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax(value, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax({ value, value }, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax_element(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax_element(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::mismatch(first, last, first2, last2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::mismatch(a, b, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::next_permutation(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::next_permutation(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::none_of(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::none_of(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::nth_element(first, mid, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::nth_element(a, mid, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort(first, mid, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort(a, mid, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort_copy(first, last, first2, mid2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort_copy(a, b, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::partition(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::partition(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_copy(first, last, first2, last2, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_copy(a, first2, last2, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_point(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_point(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::pop_heap(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::pop_heap(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::prev_permutation(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::prev_permutation(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::push_heap(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::push_heap(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_copy_if(first, last, first2, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_copy_if(a, first2, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_if(first, last, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_if(a, UnaryTrue(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_copy_if(first, last, first2, UnaryTrue(&copies), value); assert(copies == 0);
+    (void)std::ranges::replace_copy_if(a, first2, UnaryTrue(&copies), value); assert(copies == 0);
+    (void)std::ranges::replace_if(first, last, UnaryTrue(&copies), value); assert(copies == 0);
+    (void)std::ranges::replace_if(a, UnaryTrue(&copies), value); assert(copies == 0);
+    (void)std::ranges::search(first, last, first2, mid2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::search(a, b, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::search_n(first, last, count, value, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::search_n(a, count, value, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::set_difference(first, mid, mid, last, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_difference(a, b, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_intersection(first, mid, mid, last, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_intersection(a, b, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_symmetric_difference(first, mid, mid, last, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_symmetric_difference(a, b, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_union(first, mid, mid, last, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::set_union(a, b, first2, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::sort(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::sort(a, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::sort_heap(first, last, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::sort_heap(a, Less(&copies)); assert(copies == 0);
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_partition(first, last, UnaryTrue(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_partition(a, UnaryTrue(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_sort(first, last, Less(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_sort(a, Less(&copies)); assert(copies == 0); }
+#if TEST_STD_VER > 20
+    //(void)std::ranges::starts_with(first, last, first2, last2, Equal(&copies)); assert(copies == 0);
+#endif
+    (void)std::ranges::transform(first, last, first2, UnaryTransform(&copies)); assert(copies == 0);
+    (void)std::ranges::transform(a, first2, UnaryTransform(&copies)); assert(copies == 0);
+    (void)std::ranges::transform(first, mid, mid, last, first2, BinaryTransform(&copies)); assert(copies == 0);
+    (void)std::ranges::transform(a, b, first2, BinaryTransform(&copies)); assert(copies == 0);
+    (void)std::ranges::unique(first, last, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::unique(a, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::unique_copy(first, last, first2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::unique_copy(a, first2, Equal(&copies)); assert(copies == 0);
+    (void)std::ranges::upper_bound(first, last, value, Less(&copies)); assert(copies == 0);
+    (void)std::ranges::upper_bound(a, value, Less(&copies)); assert(copies == 0);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    all_the_algorithms();
+    static_assert(all_the_algorithms());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/ranges_robust_against_copying_projections.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/ranges_robust_against_copying_projections.pass.cpp
new file mode 100644
index 0000000..23d02f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/ranges_robust_against_copying_projections.pass.cpp
@@ -0,0 +1,231 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// this test checks that the projections in the ranges algorithms aren't copied/moved
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct T {};
+
+struct Proj {
+    int *copies_;
+    constexpr explicit Proj(int *copies) : copies_(copies) {}
+    constexpr Proj(const Proj& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr Proj& operator=(const Proj&) = default;
+    constexpr void *operator()(T) const { return nullptr; }
+};
+
+struct Less {
+    constexpr bool operator()(void*, void*) const { return false; }
+};
+
+struct Equal {
+    constexpr bool operator()(void*, void*) const { return true; }
+};
+
+struct UnaryVoid {
+    constexpr void operator()(void*) const {}
+};
+
+struct UnaryTrue {
+    constexpr bool operator()(void*) const { return true; }
+};
+
+struct NullaryValue {
+    constexpr std::nullptr_t operator()() const { return nullptr; }
+};
+
+struct UnaryTransform {
+    constexpr T operator()(void*) const { return T(); }
+};
+
+struct BinaryTransform {
+    constexpr T operator()(void*, void*) const { return T(); }
+};
+
+constexpr bool all_the_algorithms()
+{
+    T a[10] = {};
+    T b[10] = {};
+    T half[5] = {};
+    T *first = a;
+    T *mid = a+5;
+    T *last = a+10;
+    T *first2 = b;
+    T *mid2 = b+5;
+    T *last2 = b+10;
+    void *value = nullptr;
+    int count = 1;
+
+    int copies = 0;
+    (void)std::ranges::adjacent_find(first, last, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::adjacent_find(a, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::all_of(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::all_of(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::any_of(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::any_of(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::binary_search(first, last, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::binary_search(a, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::clamp(T(), T(), T(), Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::count(first, last, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::count(a, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::count_if(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::count_if(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::copy_if(first, last, first2, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::copy_if(a, first2, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 20
+    //(void)std::ranges::ends_with(first, last, first2, last2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+#endif
+    (void)std::ranges::equal(first, last, first2, last2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::equal(a, b, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::equal_range(first, last, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::equal_range(a, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find(first, last, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find(a, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_end(first, last, first2, mid2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_end(a, b, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_first_of(first, last, first2, last2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_first_of(a, b, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if_not(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::find_if_not(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::for_each(first, last, UnaryVoid(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::for_each(a, UnaryVoid(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::for_each_n(first, count, UnaryVoid(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::includes(first, last, first2, last2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::includes(a, b, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap_until(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_heap_until(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_partitioned(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_partitioned(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_permutation(first, last, first2, last2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_permutation(a, b, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted_until(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::is_sorted_until(a, Less(), Proj(&copies)); assert(copies == 0);
+    if (!std::is_constant_evaluated()) { (void)std::ranges::inplace_merge(first, mid, last, Less(), Proj(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::inplace_merge(a, mid, Less(), Proj(&copies)); assert(copies == 0); }
+    (void)std::ranges::lexicographical_compare(first, last, first2, last2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::lexicographical_compare(a, b, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::lower_bound(first, last, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::lower_bound(a, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::make_heap(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::make_heap(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::max(T(), T(), Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::max({ T(), T() }, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::max(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::max_element(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::max_element(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::merge(first, mid, mid, last, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::merge(half, half, b, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::min(T(), T(), Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::min({ T(), T() }, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::min(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::min_element(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::min_element(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax(T(), T(), Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax({ T(), T() }, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax_element(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::minmax_element(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::mismatch(first, last, first2, last2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::mismatch(a, b, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::next_permutation(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::next_permutation(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::none_of(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::none_of(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::nth_element(first, mid, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::nth_element(a, mid, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort(first, mid, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort(a, mid, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort_copy(first, last, first2, mid2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partial_sort_copy(a, b, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partition(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partition(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_copy(first, last, first2, last2, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_copy(a, first2, last2, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_point(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::partition_point(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::pop_heap(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::pop_heap(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::prev_permutation(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::prev_permutation(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::push_heap(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::push_heap(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_copy(first, last, first2, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_copy(a, first2, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_copy_if(first, last, first2, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_copy_if(a, first2, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove(first, last, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove(a, value, Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_if(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::remove_if(a, UnaryTrue(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_copy(first, last, first2, value, T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_copy(a, first2, value, T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_copy_if(first, last, first2, UnaryTrue(), T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_copy_if(a, first2, UnaryTrue(), T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace(first, last, value, T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace(a, value, T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_if(first, last, UnaryTrue(), T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::replace_if(a, UnaryTrue(), T(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::search(first, last, first2, mid2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::search(a, b, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::search_n(first, last, count, value, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::search_n(a, count, value, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_difference(first, mid, mid, last, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_difference(a, b, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_intersection(first, mid, mid, last, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_intersection(a, b, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_symmetric_difference(first, mid, mid, last, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_symmetric_difference(a, b, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_union(first, mid, mid, last, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::set_union(a, b, first2, Less(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::sort(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::sort(a, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::sort_heap(first, last, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::sort_heap(a, Less(), Proj(&copies)); assert(copies == 0);
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_partition(first, last, UnaryTrue(), Proj(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_partition(a, UnaryTrue(), Proj(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_sort(first, last, Less(), Proj(&copies)); assert(copies == 0); }
+    if (!std::is_constant_evaluated()) { (void)std::ranges::stable_sort(a, Less(), Proj(&copies)); assert(copies == 0); }
+#if TEST_STD_VER > 20
+    //(void)std::ranges::starts_with(first, last, first2, last2, Equal(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+#endif
+    (void)std::ranges::transform(first, last, first2, UnaryTransform(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::transform(a, first2, UnaryTransform(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::transform(first, mid, mid, last, first2, BinaryTransform(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::transform(a, b, first2, BinaryTransform(), Proj(&copies), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::unique(first, last, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::unique(a, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::unique_copy(first, last, first2, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::unique_copy(a, first2, Equal(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::upper_bound(first, last, value, Less(), Proj(&copies)); assert(copies == 0);
+    (void)std::ranges::upper_bound(a, value, Less(), Proj(&copies)); assert(copies == 0);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    all_the_algorithms();
+    static_assert(all_the_algorithms());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/robust_against_copying_comparators.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/robust_against_copying_comparators.pass.cpp
new file mode 100644
index 0000000..0f50d1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/robust_against_copying_comparators.pass.cpp
@@ -0,0 +1,218 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+#include <algorithm>
+#include <cassert>
+#include <compare>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+struct Less {
+    int *copies_;
+    TEST_CONSTEXPR explicit Less(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 Less(const Less& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 Less& operator=(const Less&) = default;
+    TEST_CONSTEXPR bool operator()(T, T) const { return false; }
+};
+
+template <class T>
+struct Equal {
+    int *copies_;
+    TEST_CONSTEXPR explicit Equal(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 Equal(const Equal& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 Equal& operator=(const Equal&) = default;
+    TEST_CONSTEXPR bool operator()(T, T) const { return true; }
+};
+
+template <class T>
+struct UnaryVoid {
+    int *copies_;
+    TEST_CONSTEXPR explicit UnaryVoid(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 UnaryVoid(const UnaryVoid& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 UnaryVoid& operator=(const UnaryVoid&) = default;
+    TEST_CONSTEXPR_CXX14 void operator()(T) const {}
+};
+
+template <class T>
+struct UnaryTrue {
+    int *copies_;
+    TEST_CONSTEXPR explicit UnaryTrue(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 UnaryTrue(const UnaryTrue& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 UnaryTrue& operator=(const UnaryTrue&) = default;
+    TEST_CONSTEXPR bool operator()(T) const { return true; }
+};
+
+template <class T>
+struct NullaryValue {
+    int *copies_;
+    TEST_CONSTEXPR explicit NullaryValue(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 NullaryValue(const NullaryValue& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 NullaryValue& operator=(const NullaryValue&) = default;
+    TEST_CONSTEXPR T operator()() const { return 0; }
+};
+
+template <class T>
+struct UnaryTransform {
+    int *copies_;
+    TEST_CONSTEXPR explicit UnaryTransform(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 UnaryTransform(const UnaryTransform& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 UnaryTransform& operator=(const UnaryTransform&) = default;
+    TEST_CONSTEXPR T operator()(T) const { return 0; }
+};
+
+template <class T>
+struct BinaryTransform {
+    int *copies_;
+    TEST_CONSTEXPR explicit BinaryTransform(int *copies) : copies_(copies) {}
+    TEST_CONSTEXPR_CXX14 BinaryTransform(const BinaryTransform& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    TEST_CONSTEXPR_CXX14 BinaryTransform& operator=(const BinaryTransform&) = default;
+    TEST_CONSTEXPR T operator()(T, T) const { return 0; }
+};
+
+#if TEST_STD_VER > 17
+struct ThreeWay {
+    int *copies_;
+    constexpr explicit ThreeWay(int *copies) : copies_(copies) {}
+    constexpr ThreeWay(const ThreeWay& rhs) : copies_(rhs.copies_) { *copies_ += 1; }
+    constexpr ThreeWay& operator=(const ThreeWay&) = default;
+    constexpr std::strong_ordering operator()(void*, void*) const { return std::strong_ordering::equal; }
+};
+#endif
+
+template <class T>
+TEST_CONSTEXPR_CXX20 bool all_the_algorithms()
+{
+    T a[10] = {};
+    T b[10] = {};
+    T *first = a;
+    T *mid = a+5;
+    T *last = a+10;
+    T *first2 = b;
+    T *mid2 = b+5;
+    T *last2 = b+10;
+    T value = 0;
+    int count = 1;
+
+    int copies = 0;
+    (void)std::adjacent_find(first, last, Equal<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER >= 11
+    (void)std::all_of(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::any_of(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::binary_search(first, last, value, Less<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 17
+    (void)std::clamp(value, value, value, Less<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::count_if(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::copy_if(first, last, first2, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::equal(first, last, first2, Equal<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 11
+    (void)std::equal(first, last, first2, last2, Equal<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::equal_range(first, last, value, Less<T>(&copies)); assert(copies == 0);
+    (void)std::find_end(first, last, first2, mid2, Equal<T>(&copies)); assert(copies == 0);
+    (void)std::find_first_of(first, last, first2, last2, Equal<T>(&copies)); assert(copies == 0);
+    (void)std::find_if(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::find_if_not(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::for_each(first, last, UnaryVoid<T>(&copies)); assert(copies == 1); copies = 0;
+#if TEST_STD_VER > 14
+    (void)std::for_each_n(first, count, UnaryVoid<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::generate(first, last, NullaryValue<T>(&copies)); assert(copies == 0);
+    (void)std::generate_n(first, count, NullaryValue<T>(&copies)); assert(copies == 0);
+    (void)std::includes(first, last, first2, last2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::is_heap(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::is_heap_until(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::is_partitioned(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::is_permutation(first, last, first2, Equal<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 11
+    (void)std::is_permutation(first, last, first2, last2, Equal<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::is_sorted(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::is_sorted_until(first, last, Less<T>(&copies)); assert(copies == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED) { (void)std::inplace_merge(first, mid, last, Less<T>(&copies)); assert(copies == 0); }
+    (void)std::lexicographical_compare(first, last, first2, last2, Less<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 17
+    //(void)std::lexicographical_compare_three_way(first, last, first2, last2, ThreeWay(&copies)); assert(copies == 0);
+#endif
+    (void)std::lower_bound(first, last, value, Less<T>(&copies)); assert(copies == 0);
+    (void)std::make_heap(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::max(value, value, Less<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER >= 11
+    (void)std::max({ value, value }, Less<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::max_element(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::merge(first, mid, mid, last, first2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::min(value, value, Less<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER >= 11
+    (void)std::min({ value, value }, Less<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::min_element(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::minmax(value, value, Less<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER >= 11
+    (void)std::minmax({ value, value }, Less<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::minmax_element(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::mismatch(first, last, first2, Equal<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER > 11
+    (void)std::mismatch(first, last, first2, last2, Equal<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::next_permutation(first, last, Less<T>(&copies)); assert(copies == 0);
+#if TEST_STD_VER >= 11
+    (void)std::none_of(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+#endif
+    (void)std::nth_element(first, mid, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::partial_sort(first, mid, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::partial_sort_copy(first, last, first2, mid2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::partition(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::partition_copy(first, last, first2, last2, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::partition_point(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::pop_heap(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::prev_permutation(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::push_heap(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::remove_copy_if(first, last, first2, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::remove_if(first, last, UnaryTrue<T>(&copies)); assert(copies == 0);
+    (void)std::replace_copy_if(first, last, first2, UnaryTrue<T>(&copies), value); assert(copies == 0);
+    (void)std::replace_if(first, last, UnaryTrue<T>(&copies), value); assert(copies == 0);
+    (void)std::search(first, last, first2, mid2, Equal<T>(&copies)); assert(copies == 0);
+    (void)std::search_n(first, last, count, value, Equal<T>(&copies)); assert(copies == 0);
+    (void)std::set_difference(first, mid, mid, last, first2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::set_intersection(first, mid, mid, last, first2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::set_symmetric_difference(first, mid, mid, last, first2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::set_union(first, mid, mid, last, first2, Less<T>(&copies)); assert(copies == 0);
+    (void)std::sort(first, first+3, Less<T>(&copies)); assert(copies == 0);
+    (void)std::sort(first, first+4, Less<T>(&copies)); assert(copies == 0);
+    (void)std::sort(first, first+5, Less<T>(&copies)); assert(copies == 0);
+    (void)std::sort(first, last, Less<T>(&copies)); assert(copies == 0);
+    (void)std::sort_heap(first, last, Less<T>(&copies)); assert(copies == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED) { (void)std::stable_partition(first, last, UnaryTrue<T>(&copies)); assert(copies == 0); }
+    if (!TEST_IS_CONSTANT_EVALUATED) { (void)std::stable_sort(first, last, Less<T>(&copies)); assert(copies == 0); }
+    (void)std::transform(first, last, first2, UnaryTransform<T>(&copies)); assert(copies == 0);
+    (void)std::transform(first, mid, mid, first2, BinaryTransform<T>(&copies)); assert(copies == 0);
+    (void)std::unique(first, last, Equal<T>(&copies)); assert(copies == 0);
+    (void)std::unique_copy(first, last, first2, Equal<T>(&copies)); assert(copies == 0);
+    (void)std::upper_bound(first, last, value, Less<T>(&copies)); assert(copies == 0);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    all_the_algorithms<void*>();
+    all_the_algorithms<int>();
+#if TEST_STD_VER > 17
+    static_assert(all_the_algorithms<void*>());
+    static_assert(all_the_algorithms<int>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/robust_against_cpp20_hostile_iterators.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/robust_against_cpp20_hostile_iterators.compile.pass.cpp
new file mode 100644
index 0000000..a7ddf22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/robust_against_cpp20_hostile_iterators.compile.pass.cpp
@@ -0,0 +1,220 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that all STL classic algorithms can be instantiated with a C++20-hostile iterator
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-ambiguous-reversed-operator
+
+#include <algorithm>
+#include <functional>
+#include <random>
+
+#include "test_macros.h"
+
+template <class Sub, class Iterator>
+struct IteratorAdaptorBase {
+  using OutTraits = std::iterator_traits<Iterator>;
+  using iterator_category = typename OutTraits::iterator_category;
+  using value_type = typename OutTraits::value_type;
+  using pointer = typename OutTraits::pointer;
+  using reference = typename OutTraits::reference;
+  using difference_type = typename OutTraits::difference_type;
+
+  IteratorAdaptorBase() {}
+  IteratorAdaptorBase(Iterator) {}
+
+  Sub& sub() { return static_cast<Sub&>(*this); }
+  const Sub& sub() const { return static_cast<Sub&>(*this); }
+
+  const Iterator& base() const { return it_; }
+
+  reference get() const { return *it_; }
+  reference operator*() const { return *it_; }
+  pointer operator->() const { return it_; }
+  reference operator[](difference_type) const { return *it_; }
+
+  Sub& operator++() { return static_cast<Sub&>(*this); }
+  Sub& operator--() { return static_cast<Sub&>(*this); }
+  Sub operator++(int) { return static_cast<Sub&>(*this); }
+  Sub operator--(int) { return static_cast<Sub&>(*this); }
+
+  Sub& operator+=(difference_type) { return static_cast<Sub&>(*this); }
+  Sub& operator-=(difference_type) { return static_cast<Sub&>(*this); }
+  bool operator==(Sub) const { return false; }
+  bool operator!=(Sub) const { return false; }
+  bool operator==(Iterator b) const { return *this == Sub(b); }
+  bool operator!=(Iterator b) const { return *this != Sub(b); }
+
+  friend Sub operator+(Sub, difference_type) { return Sub(); }
+  friend Sub operator+(difference_type, Sub) { return Sub(); }
+  friend Sub operator-(Sub, difference_type) { return Sub(); }
+  friend difference_type operator-(Sub, Sub) { return 0; }
+
+  friend bool operator<(Sub, Sub) { return false; }
+  friend bool operator>(Sub, Sub) { return false; }
+  friend bool operator<=(Sub, Sub) { return false; }
+  friend bool operator>=(Sub, Sub) { return false; }
+
+ private:
+  Iterator it_;
+};
+
+template <typename It>
+struct Cpp20HostileIterator
+    : IteratorAdaptorBase<Cpp20HostileIterator<It>, It> {
+  Cpp20HostileIterator() {}
+  Cpp20HostileIterator(It) {}
+};
+
+struct Pred {
+  bool operator()(int, int) { return false; }
+  bool operator()(int) { return false; }
+  int operator()() { return 0; }
+};
+
+void test() {
+  Cpp20HostileIterator<int*> it;
+  Pred pred;
+  std::mt19937_64 rng;
+
+  (void) std::adjacent_find(it, it);
+  (void) std::adjacent_find(it, it, pred);
+  (void) std::all_of(it, it, pred);
+  (void) std::any_of(it, it, pred);
+  (void) std::binary_search(it, it, 0);
+  (void) std::binary_search(it, it, 0, pred);
+  (void) std::copy_backward(it, it, it);
+  (void) std::copy_if(it, it, it, pred);
+  (void) std::copy_n(it, 0, it);
+  (void) std::copy(it, it, it);
+  (void) std::count_if(it, it, pred);
+  (void) std::count(it, it, 0);
+  (void) std::equal_range(it, it, 0);
+  (void) std::equal_range(it, it, 0, pred);
+  (void) std::equal(it, it, it);
+  (void) std::equal(it, it, it, pred);
+#if TEST_STD_VER > 11
+  (void) std::equal(it, it, it, it);
+  (void) std::equal(it, it, it, it, pred);
+#endif
+  (void) std::fill_n(it, 0, 0);
+  (void) std::fill(it, it, 0);
+  (void) std::find_end(it, it, it, it);
+  (void) std::find_end(it, it, it, it, pred);
+  (void) std::find_first_of(it, it, it, it);
+  (void) std::find_first_of(it, it, it, it, pred);
+  (void) std::find_if_not(it, it, pred);
+  (void) std::find_if(it, it, pred);
+  (void) std::find(it, it, 0);
+#if TEST_STD_VER > 14
+  (void) std::for_each_n(it, 0, pred);
+#endif
+  (void) std::for_each(it, it, pred);
+  (void) std::generate_n(it, 0, pred);
+  (void) std::generate(it, it, pred);
+  (void) std::includes(it, it, it, it);
+  (void) std::includes(it, it, it, it, pred);
+  (void) std::inplace_merge(it, it, it);
+  (void) std::inplace_merge(it, it, it, pred);
+  (void) std::is_heap_until(it, it);
+  (void) std::is_heap_until(it, it, pred);
+  (void) std::is_heap(it, it);
+  (void) std::is_heap(it, it, pred);
+  (void) std::is_partitioned(it, it, pred);
+  (void) std::is_permutation(it, it, it);
+  (void) std::is_permutation(it, it, it, pred);
+#if TEST_STD_VER > 11
+  (void) std::is_permutation(it, it, it, it);
+  (void) std::is_permutation(it, it, it, it, pred);
+#endif
+  (void) std::is_sorted_until(it, it);
+  (void) std::is_sorted_until(it, it, pred);
+  (void) std::is_sorted(it, it);
+  (void) std::is_sorted(it, it, pred);
+  (void) std::lexicographical_compare(it, it, it, it);
+  (void) std::lexicographical_compare(it, it, it, it, pred);
+  (void) std::lower_bound(it, it, 0);
+  (void) std::lower_bound(it, it, 0, pred);
+  (void) std::make_heap(it, it);
+  (void) std::make_heap(it, it, pred);
+  (void) std::max_element(it, it);
+  (void) std::max_element(it, it, pred);
+  (void) std::merge(it, it, it, it, it);
+  (void) std::merge(it, it, it, it, it, pred);
+  (void) std::min_element(it, it);
+  (void) std::min_element(it, it, pred);
+  (void) std::minmax_element(it, it);
+  (void) std::minmax_element(it, it, pred);
+  (void) std::mismatch(it, it, it);
+  (void) std::mismatch(it, it, it, pred);
+  (void) std::move_backward(it, it, it);
+  (void) std::move(it, it, it);
+  (void) std::next_permutation(it, it);
+  (void) std::next_permutation(it, it, pred);
+  (void) std::none_of(it, it, pred);
+  (void) std::nth_element(it, it, it);
+  (void) std::nth_element(it, it, it, pred);
+  (void) std::partial_sort_copy(it, it, it, it);
+  (void) std::partial_sort_copy(it, it, it, it, pred);
+  (void) std::partial_sort(it, it, it);
+  (void) std::partial_sort(it, it, it, pred);
+  (void) std::partition_copy(it, it, it, it, pred);
+  (void) std::partition_point(it, it, pred);
+  (void) std::partition(it, it, pred);
+  (void) std::pop_heap(it, it);
+  (void) std::pop_heap(it, it, pred);
+  (void) std::prev_permutation(it, it);
+  (void) std::prev_permutation(it, it, pred);
+  (void) std::push_heap(it, it);
+  (void) std::push_heap(it, it, pred);
+  (void) std::remove_copy_if(it, it, it, pred);
+  (void) std::remove_copy(it, it, it, 0);
+  (void) std::remove_if(it, it, pred);
+  (void) std::remove(it, it, 0);
+  (void) std::replace_copy_if(it, it, it, pred, 0);
+  (void) std::replace_copy(it, it, it, 0, 0);
+  (void) std::replace_if(it, it, pred, 0);
+  (void) std::replace(it, it, 0, 0);
+  (void) std::reverse_copy(it, it, it);
+  (void) std::reverse(it, it);
+  (void) std::rotate_copy(it, it, it, it);
+  (void) std::rotate(it, it, it);
+#if TEST_STD_VER > 14
+  (void) std::sample(it, it, it, 0, rng);
+#endif
+  (void) std::search(it, it, it, it);
+  (void) std::search(it, it, it, it, pred);
+#if TEST_STD_VER > 14
+  (void) std::search(it, it, std::default_searcher<Cpp20HostileIterator<int*>>(it, it));
+#endif
+  (void) std::set_difference(it, it, it, it, it);
+  (void) std::set_difference(it, it, it, it, it, pred);
+  (void) std::set_intersection(it, it, it, it, it);
+  (void) std::set_intersection(it, it, it, it, it, pred);
+  (void) std::set_symmetric_difference(it, it, it, it, it);
+  (void) std::set_symmetric_difference(it, it, it, it, it, pred);
+  (void) std::set_union(it, it, it, it, it);
+  (void) std::set_union(it, it, it, it, it, pred);
+#if TEST_STD_VER > 17
+  (void) std::shift_left(it, it, 0);
+  (void) std::shift_right(it, it, 0);
+#endif
+  (void) std::shuffle(it, it, rng);
+  (void) std::sort_heap(it, it);
+  (void) std::sort_heap(it, it, pred);
+  (void) std::sort(it, it);
+  (void) std::sort(it, it, pred);
+  (void) std::stable_partition(it, it, pred);
+  (void) std::stable_sort(it, it);
+  (void) std::swap_ranges(it, it, it);
+  (void) std::transform(it, it, it, pred);
+  (void) std::transform(it, it, it, it, pred);
+  (void) std::unique_copy(it, it, it);
+  (void) std::unique(it, it);
+  (void) std::upper_bound(it, it, 0);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/sort_stability.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/sort_stability.pass.cpp
new file mode 100644
index 0000000..664ea70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/sort_stability.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// Test std::sort stability randomization
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DEBUG_RANDOMIZE_UNSPECIFIED_STABILITY
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+
+struct EqualType {
+  int value = 0;
+  constexpr bool operator<(const EqualType&) const { return false; }
+};
+
+std::vector<EqualType> deterministic() {
+  static constexpr int kSize = 100;
+  std::vector<EqualType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = kSize / 2 - i * (i % 2 ? -1 : 1);
+  }
+  std::__sort(v.begin(), v.end(), std::less<EqualType>());
+  return v;
+}
+
+void test_randomization() {
+  static constexpr int kSize = 100;
+  std::vector<EqualType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = kSize / 2 - i * (i % 2 ? -1 : 1);
+  }
+  auto deterministic_v = deterministic();
+  std::sort(v.begin(), v.end());
+  bool all_equal = true;
+  for (int i = 0; i < kSize; ++i) {
+    if (v[i].value != deterministic_v[i].value) {
+      all_equal = false;
+    }
+  }
+  assert(!all_equal);
+}
+
+void test_same() {
+  static constexpr int kSize = 100;
+  std::vector<EqualType> v;
+  v.resize(kSize);
+  for (int i = 0; i < kSize; ++i) {
+    v[i].value = kSize / 2 - i * (i % 2 ? -1 : 1);
+  }
+  auto snapshot_v = v;
+  auto snapshot_custom_v = v;
+  std::sort(v.begin(), v.end());
+  std::sort(snapshot_v.begin(), snapshot_v.end());
+  std::sort(snapshot_custom_v.begin(), snapshot_custom_v.end(),
+            [](const EqualType&, const EqualType&) { return false; });
+  bool all_equal = true;
+  for (int i = 0; i < kSize; ++i) {
+    if (v[i].value != snapshot_v[i].value || v[i].value != snapshot_custom_v[i].value) {
+      all_equal = false;
+    }
+  }
+  assert(all_equal);
+}
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+  std::array<EqualType, 10> v;
+  for (int i = 9; i >= 0; --i) {
+    v[9 - i].value = i;
+  }
+  std::sort(v.begin(), v.end());
+  return std::is_sorted(v.begin(), v.end());
+}
+#endif
+
+int main(int, char**) {
+  test_randomization();
+  test_same();
+#if TEST_STD_VER > 17
+  static_assert(test_constexpr(), "");
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_iterator.compile.pass.cpp
new file mode 100644
index 0000000..9c488c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_iterator.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+// concept __nothrow_forward_iterator;
+
+#include <memory>
+
+#include "test_iterators.h"
+
+static_assert(std::ranges::__nothrow_forward_iterator<forward_iterator<int*>>);
+static_assert(std::forward_iterator<ForwardProxyIterator<int*>>);
+static_assert(!std::ranges::__nothrow_forward_iterator<ForwardProxyIterator<int*>>);
+
+constexpr bool forward_subsumes_input(std::ranges::__nothrow_forward_iterator auto) {
+  return true;
+}
+constexpr bool forward_subsumes_input(std::ranges::__nothrow_input_iterator auto);
+
+static_assert(forward_subsumes_input("foo"));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp
new file mode 100644
index 0000000..2ddfdf6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_forward_range.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept __nothrow_forward_range;
+
+#include <memory>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+static_assert(std::ranges::__nothrow_forward_range<test_range<forward_iterator>>);
+static_assert(!std::ranges::__nothrow_forward_range<test_range<cpp20_input_iterator>>);
+static_assert(std::ranges::forward_range<test_range<ForwardProxyIterator>>);
+static_assert(!std::ranges::__nothrow_forward_range<test_range<ForwardProxyIterator>>);
+
+constexpr bool forward_subsumes_input(std::ranges::__nothrow_forward_range auto&&) {
+  return true;
+}
+constexpr bool forward_subsumes_input(std::ranges::__nothrow_input_range auto&&);
+
+static_assert(forward_subsumes_input("foo"));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_input_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_input_iterator.compile.pass.cpp
new file mode 100644
index 0000000..2da3f42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_input_iterator.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+// concept __nothrow_input_iterator;
+
+#include <memory>
+
+#include "test_iterators.h"
+
+struct InputProxyIterator {
+  using value_type = int;
+  using difference_type = int;
+  InputProxyIterator& operator++();
+  InputProxyIterator operator++(int);
+
+  int operator*() const;
+};
+
+static_assert(std::ranges::__nothrow_input_iterator<cpp20_input_iterator<int*>>);
+static_assert(!std::ranges::__nothrow_input_iterator<cpp17_output_iterator<int*>>);
+static_assert(std::input_iterator<InputProxyIterator>);
+static_assert(!std::ranges::__nothrow_input_iterator<InputProxyIterator>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_input_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_input_range.compile.pass.cpp
new file mode 100644
index 0000000..2f851c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_input_range.compile.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept __nothrow_input_range;
+
+#include <memory>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+// Has to be a template to work with `test_range`.
+template <typename>
+struct InputProxyIterator {
+  using value_type = int;
+  using difference_type = int;
+  InputProxyIterator& operator++();
+  InputProxyIterator operator++(int);
+
+  int operator*() const;
+};
+
+static_assert(std::ranges::__nothrow_input_range<test_range<cpp20_input_iterator>>);
+static_assert(std::ranges::input_range<test_range<InputProxyIterator>>);
+static_assert(!std::ranges::__nothrow_input_range<test_range<InputProxyIterator>>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_sentinel_for.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_sentinel_for.compile.pass.cpp
new file mode 100644
index 0000000..a605095
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/specialized.algorithms/special.mem.concepts/nothrow_sentinel_for.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class S, class I>
+// concept __nothrow_sentinel_for;
+
+#include <iterator>
+#include <memory>
+
+static_assert(std::ranges::__nothrow_sentinel_for<int*, int*>);
+static_assert(!std::ranges::__nothrow_sentinel_for<int*, long*>);
+
+// Because `__nothrow_sentinel_for` is essentially an alias for `sentinel_for`,
+// the two concepts should subsume each other.
+
+constexpr bool ntsf_subsumes_sf(std::ranges::__nothrow_sentinel_for<char*> auto) requires true {
+  return true;
+}
+constexpr bool ntsf_subsumes_sf(std::sentinel_for<char*> auto);
+
+static_assert(ntsf_subsumes_sf("foo"));
+
+constexpr bool sf_subsumes_ntsf(std::sentinel_for<char*> auto) requires true {
+  return true;
+}
+constexpr bool sf_subsumes_ntsf(std::ranges::__nothrow_sentinel_for<char*> auto);
+
+static_assert(sf_subsumes_ntsf("foo"));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/algorithms/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/algorithms/version.pass.cpp
new file mode 100644
index 0000000..57d84b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/algorithms/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+#include <algorithm>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/assertions_disabled.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/assertions_disabled.pass.cpp
new file mode 100644
index 0000000..5ec5f12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/assertions_disabled.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that _LIBCPP_ASSERT doesn't do anything when assertions are disabled.
+// We need to use -Wno-macro-redefined because the test suite defines
+// _LIBCPP_ENABLE_ASSERTIONS=1 under some configurations.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ENABLE_ASSERTIONS=0
+
+#include <cassert>
+
+bool executed_condition = false;
+bool f() { executed_condition = true; return false; }
+
+int main(int, char**) {
+  _LIBCPP_ASSERT(f(), "message"); // should not execute anything
+  assert(!executed_condition); // really make sure we did not execute anything at all
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/customize_verbose_abort.compile-time.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/customize_verbose_abort.compile-time.pass.cpp
new file mode 100644
index 0000000..1ea6c36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/customize_verbose_abort.compile-time.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This compile-time customization requires cross-file macros, which doesn't work with modules.
+// UNSUPPORTED: modules-build
+
+// Make sure that we can customize the verbose termination function at compile-time by
+// defining _LIBCPP_VERBOSE_ABORT ourselves. Note that this does not have any
+// deployment target requirements.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1 -D_LIBCPP_VERBOSE_ABORT(...)=my_abort(__VA_ARGS__)
+
+#include <cstdlib>
+
+void my_abort(char const*, ...) {
+  std::exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+  _LIBCPP_ASSERT(false, "message");
+  return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/customize_verbose_abort.link-time.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/customize_verbose_abort.link-time.pass.cpp
new file mode 100644
index 0000000..c0422dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/customize_verbose_abort.link-time.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that we can set a custom verbose termination function at link-time.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// We flag uses of the verbose termination function in older dylibs at compile-time to avoid runtime
+// failures when back-deploying.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+
+#include <cstdlib>
+
+void std::__libcpp_verbose_abort(char const*, ...) {
+  std::exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+  _LIBCPP_ASSERT(false, "message");
+  return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/default_verbose_abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/default_verbose_abort.pass.cpp
new file mode 100644
index 0000000..79d26c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/default_verbose_abort.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that the default verbose termination function aborts the program.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <csignal>
+#include <cstdlib>
+
+void signal_handler(int signal) {
+  if (signal == SIGABRT)
+    std::_Exit(EXIT_SUCCESS);
+  std::_Exit(EXIT_FAILURE);
+}
+
+int main(int, char**) {
+  if (std::signal(SIGABRT, signal_handler) != SIG_ERR)
+    _LIBCPP_ASSERT(false, "foo");
+  return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/deprecated-link-time-custom-handler.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/deprecated-link-time-custom-handler.pass.cpp
new file mode 100644
index 0000000..b699a3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/deprecated-link-time-custom-handler.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that we still support _LIBCPP_AVAILABILITY_CUSTOM_VERBOSE_ABORT_PROVIDED for folks
+// who customize the verbose termination function at link-time in back-deployment environments.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1 -D_LIBCPP_AVAILABILITY_CUSTOM_VERBOSE_ABORT_PROVIDED
+
+// We emit a #warning about the deprecation of this setting, so make sure we don't turn that into an error.
+// ADDITIONAL_COMPILE_FLAGS: -Wno-error
+
+#include <cstdlib>
+
+void std::__libcpp_verbose_abort(char const*, ...) {
+  std::exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+  _LIBCPP_ASSERT(false, "message");
+  return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.sh.cpp
new file mode 100644
index 0000000..80f3f25
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/headers_declare_verbose_abort.sh.cpp
@@ -0,0 +1,785 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that all public C++ headers define the verbose termination function, which
+// is required for users to be able to include any public header and then override
+// the function using a strong definition.
+
+// The system-provided <uchar.h> seems to be broken on AIX, which trips up this test.
+// XFAIL: LIBCXX-AIX-FIXME
+
+/*
+BEGIN-SCRIPT
+
+for i, header in enumerate(public_headers):
+    # Skip C compatibility headers.
+    if header.endswith('.h'):
+        continue
+
+    vars = {
+        'run': 'RUN',
+        'i': i,
+        'restrictions': ' && ' + header_restrictions[header] if header in header_restrictions else '',
+        'header': header
+    }
+
+    print("""\
+// {run}: %{{build}} -DTEST_{i}
+#if defined(TEST_{i}){restrictions}
+#   include <{header}>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+""".format(**vars))
+
+END-SCRIPT
+*/
+
+#include <__config>
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#   undef __DEPRECATED
+#endif
+
+int main(int, char**) { return 0; }
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+// RUN: %{build} -DTEST_0
+#if defined(TEST_0)
+#   include <algorithm>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_1
+#if defined(TEST_1)
+#   include <any>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_2
+#if defined(TEST_2)
+#   include <array>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_3
+#if defined(TEST_3)
+#   include <atomic>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_4
+#if defined(TEST_4) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <barrier>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_5
+#if defined(TEST_5)
+#   include <bit>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_6
+#if defined(TEST_6)
+#   include <bitset>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_7
+#if defined(TEST_7)
+#   include <cassert>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_8
+#if defined(TEST_8)
+#   include <ccomplex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_9
+#if defined(TEST_9)
+#   include <cctype>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_10
+#if defined(TEST_10)
+#   include <cerrno>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_11
+#if defined(TEST_11)
+#   include <cfenv>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_12
+#if defined(TEST_12)
+#   include <cfloat>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_13
+#if defined(TEST_13)
+#   include <charconv>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_14
+#if defined(TEST_14)
+#   include <chrono>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_15
+#if defined(TEST_15)
+#   include <cinttypes>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_16
+#if defined(TEST_16)
+#   include <ciso646>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_17
+#if defined(TEST_17)
+#   include <climits>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_18
+#if defined(TEST_18) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <clocale>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_19
+#if defined(TEST_19)
+#   include <cmath>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_20
+#if defined(TEST_20) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <codecvt>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_21
+#if defined(TEST_21)
+#   include <compare>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_22
+#if defined(TEST_22)
+#   include <complex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_24
+#if defined(TEST_24)
+#   include <concepts>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_25
+#if defined(TEST_25)
+#   include <condition_variable>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_26
+#if defined(TEST_26) && (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#   include <coroutine>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_27
+#if defined(TEST_27)
+#   include <csetjmp>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_28
+#if defined(TEST_28)
+#   include <csignal>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_29
+#if defined(TEST_29)
+#   include <cstdarg>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_30
+#if defined(TEST_30)
+#   include <cstdbool>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_31
+#if defined(TEST_31)
+#   include <cstddef>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_32
+#if defined(TEST_32)
+#   include <cstdint>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_33
+#if defined(TEST_33)
+#   include <cstdio>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_34
+#if defined(TEST_34)
+#   include <cstdlib>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_35
+#if defined(TEST_35)
+#   include <cstring>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_36
+#if defined(TEST_36)
+#   include <ctgmath>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_37
+#if defined(TEST_37)
+#   include <ctime>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_39
+#if defined(TEST_39)
+#   include <cuchar>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_40
+#if defined(TEST_40) && !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwchar>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_41
+#if defined(TEST_41) && !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwctype>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_42
+#if defined(TEST_42)
+#   include <deque>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_44
+#if defined(TEST_44)
+#   include <exception>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_45
+#if defined(TEST_45)
+#   include <execution>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_46
+#if defined(TEST_46)
+#   include <expected>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_48
+#if defined(TEST_48) && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#   include <filesystem>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_50
+#if defined(TEST_50)
+#   include <format>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_51
+#if defined(TEST_51)
+#   include <forward_list>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_52
+#if defined(TEST_52) && !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#   include <fstream>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_53
+#if defined(TEST_53)
+#   include <functional>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_54
+#if defined(TEST_54) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <future>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_55
+#if defined(TEST_55)
+#   include <initializer_list>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_57
+#if defined(TEST_57) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iomanip>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_58
+#if defined(TEST_58) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ios>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_59
+#if defined(TEST_59)
+#   include <iosfwd>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_60
+#if defined(TEST_60) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iostream>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_61
+#if defined(TEST_61) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <istream>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_62
+#if defined(TEST_62)
+#   include <iterator>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_63
+#if defined(TEST_63) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <latch>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_64
+#if defined(TEST_64)
+#   include <limits>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_66
+#if defined(TEST_66)
+#   include <list>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_67
+#if defined(TEST_67) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_69
+#if defined(TEST_69)
+#   include <map>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_71
+#if defined(TEST_71)
+#   include <memory>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_72
+#if defined(TEST_72)
+#   include <memory_resource>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_73
+#if defined(TEST_73) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <mutex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_74
+#if defined(TEST_74)
+#   include <new>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_75
+#if defined(TEST_75)
+#   include <numbers>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_76
+#if defined(TEST_76)
+#   include <numeric>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_77
+#if defined(TEST_77)
+#   include <optional>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_78
+#if defined(TEST_78) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ostream>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_79
+#if defined(TEST_79)
+#   include <queue>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_80
+#if defined(TEST_80)
+#   include <random>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_81
+#if defined(TEST_81)
+#   include <ranges>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_82
+#if defined(TEST_82)
+#   include <ratio>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_83
+#if defined(TEST_83) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <regex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_84
+#if defined(TEST_84)
+#   include <scoped_allocator>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_85
+#if defined(TEST_85) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <semaphore>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_86
+#if defined(TEST_86)
+#   include <set>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_88
+#if defined(TEST_88) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <shared_mutex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_89
+#if defined(TEST_89)
+#   include <source_location>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_90
+#if defined(TEST_90)
+#   include <span>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_91
+#if defined(TEST_91) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <sstream>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_92
+#if defined(TEST_92)
+#   include <stack>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_96
+#if defined(TEST_96)
+#   include <stdexcept>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_100
+#if defined(TEST_100) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <streambuf>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_101
+#if defined(TEST_101)
+#   include <string>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_103
+#if defined(TEST_103)
+#   include <string_view>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_104
+#if defined(TEST_104) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <strstream>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_105
+#if defined(TEST_105)
+#   include <system_error>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_107
+#if defined(TEST_107) && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <thread>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_108
+#if defined(TEST_108)
+#   include <tuple>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_109
+#if defined(TEST_109)
+#   include <type_traits>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_110
+#if defined(TEST_110)
+#   include <typeindex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_111
+#if defined(TEST_111)
+#   include <typeinfo>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_113
+#if defined(TEST_113)
+#   include <unordered_map>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_114
+#if defined(TEST_114)
+#   include <unordered_set>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_115
+#if defined(TEST_115)
+#   include <utility>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_116
+#if defined(TEST_116)
+#   include <valarray>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_117
+#if defined(TEST_117)
+#   include <variant>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_118
+#if defined(TEST_118)
+#   include <vector>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_119
+#if defined(TEST_119)
+#   include <version>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_122
+#if defined(TEST_122) && __cplusplus >= 201103L
+#   include <experimental/algorithm>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_123
+#if defined(TEST_123) && __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#   include <experimental/coroutine>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_124
+#if defined(TEST_124) && __cplusplus >= 201103L
+#   include <experimental/deque>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_125
+#if defined(TEST_125) && __cplusplus >= 201103L
+#   include <experimental/forward_list>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_126
+#if defined(TEST_126) && __cplusplus >= 201103L
+#   include <experimental/functional>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_127
+#if defined(TEST_127) && __cplusplus >= 201103L
+#   include <experimental/iterator>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_128
+#if defined(TEST_128) && __cplusplus >= 201103L
+#   include <experimental/list>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_129
+#if defined(TEST_129) && __cplusplus >= 201103L
+#   include <experimental/map>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_130
+#if defined(TEST_130) && __cplusplus >= 201103L
+#   include <experimental/memory_resource>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_131
+#if defined(TEST_131) && __cplusplus >= 201103L
+#   include <experimental/propagate_const>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_132
+#if defined(TEST_132) && !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#   include <experimental/regex>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_133
+#if defined(TEST_133) && __cplusplus >= 201103L
+#   include <experimental/set>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_134
+#if defined(TEST_134) && __cplusplus >= 201103L
+#   include <experimental/simd>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_135
+#if defined(TEST_135) && __cplusplus >= 201103L
+#   include <experimental/string>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_136
+#if defined(TEST_136) && __cplusplus >= 201103L
+#   include <experimental/type_traits>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_137
+#if defined(TEST_137) && __cplusplus >= 201103L
+#   include <experimental/unordered_map>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_138
+#if defined(TEST_138) && __cplusplus >= 201103L
+#   include <experimental/unordered_set>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_139
+#if defined(TEST_139) && __cplusplus >= 201103L
+#   include <experimental/utility>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_140
+#if defined(TEST_140) && __cplusplus >= 201103L
+#   include <experimental/vector>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_141
+#if defined(TEST_141)
+#   include <ext/hash_map>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// RUN: %{build} -DTEST_142
+#if defined(TEST_142)
+#   include <ext/hash_set>
+    using HandlerType = decltype(std::__libcpp_verbose_abort);
+#endif
+
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/assertions/single_expression.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/assertions/single_expression.sh.cpp
new file mode 100644
index 0000000..60847f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/assertions/single_expression.sh.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that _LIBCPP_ASSERT is a single expression. This is useful so we can use
+// it in places that require an expression, such as in a constructor initializer list.
+
+// RUN: %{build} -Wno-macro-redefined -D_LIBCPP_ENABLE_ASSERTIONS=1
+// RUN: %{run}
+
+// RUN: %{build} -Wno-macro-redefined -D_LIBCPP_ENABLE_ASSERTIONS=0
+// RUN: %{run}
+
+// RUN: %{build} -Wno-macro-redefined -D_LIBCPP_ENABLE_ASSERTIONS=0 -D_LIBCPP_ASSERTIONS_DISABLE_ASSUME
+// RUN: %{run}
+
+#include <__assert>
+#include <cassert>
+
+void f() {
+  int i = (_LIBCPP_ASSERT(true, "message"), 3);
+  assert(i == 3);
+  return _LIBCPP_ASSERT(true, "message");
+}
+
+int main(int, char**) {
+  f();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.align/align.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.align/align.pass.cpp
new file mode 100644
index 0000000..e99af02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.align/align.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+// REQUIRES: is-lockfree-runtime-function
+// ADDITIONAL_COMPILE_FLAGS: -Wno-psabi
+// ... since C++20 std::__atomic_base initializes, so we get a warning about an
+// ABI change for vector variants since the constructor code for that is
+// different if one were to compile with architecture-specific vector
+// extensions enabled.
+// This however isn't ABI breaking as it was impossible for any code to trigger
+// this without using libc++ internals.
+
+// GCC currently fails because it needs -fabi-version=6 to fix mangling of
+// std::atomic when used with __attribute__((vector(X))).
+// XFAIL: gcc
+
+// This fails on PowerPC, as the LLIArr2 and Padding structs do not have
+// adequate alignment, despite these types returning true for the query of
+// being lock-free. This is an issue that occurs when linking in the
+// PowerPC GNU libatomic library into the test.
+// XFAIL: target=powerpc{{.*}}le-unknown-linux-gnu
+
+// <atomic>
+
+// Verify that the content of atomic<T> is properly aligned if the type is
+// lock-free. This can't be observed through the atomic<T> API. It is
+// nonetheless required for correctness of the implementation: lock-free implies
+// that ISA instructions are used, and these instructions assume "suitable
+// alignment". Supported architectures all require natural alignment for
+// lock-freedom (e.g. load-linked / store-conditional, or cmpxchg).
+
+#include <atomic>
+#include <cassert>
+
+template <typename T>
+struct atomic_test : public std::__atomic_base<T> {
+  atomic_test() {
+    if (this->is_lock_free()) {
+      using AtomicImpl = decltype(this->__a_);
+      assert(alignof(AtomicImpl) >= sizeof(AtomicImpl) &&
+             "expected natural alignment for lock-free type");
+    }
+  }
+};
+
+int main(int, char**) {
+
+// structs and unions can't be defined in the template invocation.
+// Work around this with a typedef.
+#define CHECK_ALIGNMENT(T)                                                     \
+  do {                                                                         \
+    typedef T type;                                                            \
+    atomic_test<type> t;                                                       \
+  } while (0)
+
+  CHECK_ALIGNMENT(bool);
+  CHECK_ALIGNMENT(char);
+  CHECK_ALIGNMENT(signed char);
+  CHECK_ALIGNMENT(unsigned char);
+  CHECK_ALIGNMENT(char16_t);
+  CHECK_ALIGNMENT(char32_t);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  CHECK_ALIGNMENT(wchar_t);
+#endif
+  CHECK_ALIGNMENT(short);
+  CHECK_ALIGNMENT(unsigned short);
+  CHECK_ALIGNMENT(int);
+  CHECK_ALIGNMENT(unsigned int);
+  CHECK_ALIGNMENT(long);
+  CHECK_ALIGNMENT(unsigned long);
+  CHECK_ALIGNMENT(long long);
+  CHECK_ALIGNMENT(unsigned long long);
+  CHECK_ALIGNMENT(std::nullptr_t);
+  CHECK_ALIGNMENT(void *);
+  CHECK_ALIGNMENT(float);
+  CHECK_ALIGNMENT(double);
+  CHECK_ALIGNMENT(long double);
+  CHECK_ALIGNMENT(int __attribute__((vector_size(1 * sizeof(int)))));
+  CHECK_ALIGNMENT(int __attribute__((vector_size(2 * sizeof(int)))));
+  CHECK_ALIGNMENT(int __attribute__((vector_size(4 * sizeof(int)))));
+  CHECK_ALIGNMENT(int __attribute__((vector_size(16 * sizeof(int)))));
+  CHECK_ALIGNMENT(int __attribute__((vector_size(32 * sizeof(int)))));
+  CHECK_ALIGNMENT(float __attribute__((vector_size(1 * sizeof(float)))));
+  CHECK_ALIGNMENT(float __attribute__((vector_size(2 * sizeof(float)))));
+  CHECK_ALIGNMENT(float __attribute__((vector_size(4 * sizeof(float)))));
+  CHECK_ALIGNMENT(float __attribute__((vector_size(16 * sizeof(float)))));
+  CHECK_ALIGNMENT(float __attribute__((vector_size(32 * sizeof(float)))));
+  CHECK_ALIGNMENT(double __attribute__((vector_size(1 * sizeof(double)))));
+  CHECK_ALIGNMENT(double __attribute__((vector_size(2 * sizeof(double)))));
+  CHECK_ALIGNMENT(double __attribute__((vector_size(4 * sizeof(double)))));
+  CHECK_ALIGNMENT(double __attribute__((vector_size(16 * sizeof(double)))));
+  CHECK_ALIGNMENT(double __attribute__((vector_size(32 * sizeof(double)))));
+  CHECK_ALIGNMENT(struct Empty {});
+  CHECK_ALIGNMENT(struct OneInt { int i; });
+  CHECK_ALIGNMENT(struct IntArr2 { int i[2]; });
+  CHECK_ALIGNMENT(struct LLIArr2 { long long int i[2]; });
+  CHECK_ALIGNMENT(struct LLIArr4 { long long int i[4]; });
+  CHECK_ALIGNMENT(struct LLIArr8 { long long int i[8]; });
+  CHECK_ALIGNMENT(struct LLIArr16 { long long int i[16]; });
+  CHECK_ALIGNMENT(struct Padding { char c; /* padding */ long long int i; });
+  CHECK_ALIGNMENT(union IntFloat { int i; float f; });
+  CHECK_ALIGNMENT(enum class StrongEnum { foo });
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp
new file mode 100644
index 0000000..7678775
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.flag/init_bool.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// TESTING EXTENSION atomic_flag(bool)
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+// Ensure that static initialization happens; this is PR#37226
+extern std::atomic_flag global;
+struct X { X() { global.test_and_set(); }};
+X x;
+std::atomic_flag global{false};
+#endif
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(global.test_and_set() == 1);
+#endif
+    {
+        std::atomic_flag f(false);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        std::atomic_flag f(true);
+        assert(f.test_and_set() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.order/memory_order.underlying_type.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.order/memory_order.underlying_type.pass.cpp
new file mode 100644
index 0000000..5379ef8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.order/memory_order.underlying_type.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test ensures that std::memory_order has the same size under all
+// standard versions to make sure we're not breaking the ABI. This is
+// relevant because std::memory_order is a scoped enumeration in C++20,
+// but an unscoped enumeration pre-C++20.
+//
+// See PR40977 for details.
+
+#include <atomic>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+enum cpp17_memory_order {
+  cpp17_memory_order_relaxed, cpp17_memory_order_consume, cpp17_memory_order_acquire,
+  cpp17_memory_order_release, cpp17_memory_order_acq_rel, cpp17_memory_order_seq_cst
+};
+
+static_assert((std::is_same<std::underlying_type<cpp17_memory_order>::type,
+                            std::underlying_type<std::memory_order>::type>::value),
+  "std::memory_order should have the same underlying type as a corresponding "
+  "unscoped enumeration would. Otherwise, our ABI changes from C++17 to C++20.");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.syn/incompatible_with_stdatomic.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.syn/incompatible_with_stdatomic.verify.cpp
new file mode 100644
index 0000000..ca092d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.syn/incompatible_with_stdatomic.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// REQUIRES: c++03 || c++11 || c++14 || c++17 || c++20
+
+// This test ensures that we issue a reasonable diagnostic when including <atomic> after
+// <stdatomic.h> has been included. Before C++23, this otherwise leads to obscure errors
+// because <atomic> may try to redefine things defined by <stdatomic.h>.
+
+// Ignore additional weird errors that happen when the two headers are mixed.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error -Xclang -verify-ignore-unexpected=warning
+
+#include <stdatomic.h>
+#include <atomic>
+
+// expected-error@*:* {{<atomic> is incompatible with <stdatomic.h> before C++23.}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp
new file mode 100644
index 0000000..ca6f006
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+//     T* atomic_fetch_add(volatile atomic<T*>* obj, ptrdiff_t op)
+// template <class T>
+//     T* atomic_fetch_add(atomic<T*>* obj, ptrdiff_t op);
+
+#include <atomic>
+
+void void_pointer() {
+  {
+    volatile std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_add(&obj, 0);
+  }
+  {
+    std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_add(&obj, 0);
+  }
+}
+
+struct Incomplete;
+
+void pointer_to_incomplete_type() {
+  {
+    volatile std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_add(&obj, 0);
+  }
+  {
+    std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_add(&obj, 0);
+  }
+}
+
+void function_pointer() {
+  {
+    volatile std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_add(&fun, 0);
+  }
+  {
+    std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_add(&fun, 0);
+  }
+}
+
+struct S {
+  void fun(int);
+};
+
+void member_function_pointer() {
+  {
+    volatile std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_add' in}}
+    std::atomic_fetch_add(&fun, 0);
+  }
+  {
+    std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_add' in}}
+    std::atomic_fetch_add(&fun, 0);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp
new file mode 100644
index 0000000..773dbc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+//     T*
+//     atomic_fetch_add_explicit(volatile atomic<T*>* obj, ptrdiff_t op,
+//                               memory_order m);
+// template <class T>
+//     T*
+//     atomic_fetch_add_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m);
+
+#include <atomic>
+
+void void_pointer() {
+  {
+    volatile std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+}
+
+struct Incomplete;
+
+void pointer_to_incomplete_type() {
+  {
+    volatile std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+}
+
+void function_pointer() {
+  {
+    volatile std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+}
+
+struct S {
+  void fun(int);
+};
+
+void member_function_pointer() {
+  {
+    volatile std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_add' in}}
+    std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_add' in}}
+    std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp
new file mode 100644
index 0000000..c2cf156
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+//     T* atomic_fetch_sub(volatile atomic<T*>* obj, ptrdiff_t op)
+// template <class T>
+//     T* atomic_fetch_sub(atomic<T*>* obj, ptrdiff_t op);
+
+#include <atomic>
+
+void void_pointer() {
+  {
+    volatile std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_sub(&obj, 0);
+  }
+  {
+    std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_sub(&obj, 0);
+  }
+}
+
+struct Incomplete;
+
+void pointer_to_incomplete_type() {
+  {
+    volatile std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_sub(&obj, 0);
+  }
+  {
+    std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_sub(&obj, 0);
+  }
+}
+
+void function_pointer() {
+  {
+    volatile std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_sub(&fun, 0);
+  }
+  {
+    std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_sub(&fun, 0);
+  }
+}
+
+struct S {
+  void fun(int);
+};
+
+void member_function_pointer() {
+  {
+    volatile std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_sub' in}}
+    std::atomic_fetch_sub(&fun, 0);
+  }
+  {
+    std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_sub' in}}
+    std::atomic_fetch_sub(&fun, 0);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp
new file mode 100644
index 0000000..73c2b96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+//     T*
+//     atomic_fetch_sub_explicit(volatile atomic<T*>* obj, ptrdiff_t op,
+//                               memory_order m);
+// template <class T>
+//     T*
+//     atomic_fetch_sub_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m);
+
+#include <atomic>
+
+void void_pointer() {
+  {
+    volatile std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<void*> obj;
+    // expected-error@atomic:* {{incomplete type 'void' where a complete type is required}}
+    std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+}
+
+struct Incomplete;
+
+void pointer_to_incomplete_type() {
+  {
+    volatile std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<Incomplete*> obj;
+    // expected-error@atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+    std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
+  }
+}
+
+void function_pointer() {
+  {
+    volatile std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<void (*)(int)> fun;
+    // expected-error-re@atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+    std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+}
+
+struct S {
+  void fun(int);
+};
+
+void member_function_pointer() {
+  {
+    volatile std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_sub' in}}
+    std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+  {
+    std::atomic<void (S::*)(int)> fun;
+    // expected-error@atomic:* {{no member named 'fetch_sub' in}}
+    std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/bit-int.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/bit-int.verify.cpp
new file mode 100644
index 0000000..fc6a529
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/bit-int.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// Make sure that `std::atomic` doesn't work with `_BitInt`. The intent is to
+// disable them for now until their behavior can be designed better later.
+// See https://reviews.llvm.org/D84049 for details.
+
+// UNSUPPORTED: apple-clang-14
+
+// UNSUPPORTED: c++03
+
+#include <atomic>
+
+int main(int, char**)
+{
+  // expected-error@atomic:*1 {{_Atomic cannot be applied to integer type '_BitInt(32)'}}
+  std::atomic<_BitInt(32)> x(42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/diagnose_invalid_memory_order.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/diagnose_invalid_memory_order.verify.cpp
new file mode 100644
index 0000000..3eb4cab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/diagnose_invalid_memory_order.verify.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test fails because diagnose_if doesn't emit all of the diagnostics
+// when -fdelayed-template-parsing is enabled, like it is in MSVC mode.
+// XFAIL: msvc
+
+// REQUIRES: diagnose-if-support
+
+// <atomic>
+
+// Test that invalid memory order arguments are diagnosed where possible.
+
+#include <atomic>
+
+int main(int, char**) {
+    std::atomic<int> x(42);
+    volatile std::atomic<int>& vx = x;
+    int val1 = 1; ((void)val1);
+    int val2 = 2; ((void)val2);
+    // load operations
+    {
+        x.load(std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        x.load(std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.load(std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.load(std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        x.load(std::memory_order_relaxed);
+        x.load(std::memory_order_consume);
+        x.load(std::memory_order_acquire);
+        x.load(std::memory_order_seq_cst);
+    }
+    {
+        std::atomic_load_explicit(&x, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_load_explicit(&x, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_load_explicit(&vx, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_load_explicit(&vx, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        std::atomic_load_explicit(&x, std::memory_order_relaxed);
+        std::atomic_load_explicit(&x, std::memory_order_consume);
+        std::atomic_load_explicit(&x, std::memory_order_acquire);
+        std::atomic_load_explicit(&x, std::memory_order_seq_cst);
+    }
+    // store operations
+    {
+        x.store(42, std::memory_order_consume); // expected-warning {{memory order argument to atomic operation is invalid}}
+        x.store(42, std::memory_order_acquire); // expected-warning {{memory order argument to atomic operation is invalid}}
+        x.store(42, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.store(42, std::memory_order_consume); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.store(42, std::memory_order_acquire); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.store(42, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        x.store(42, std::memory_order_relaxed);
+        x.store(42, std::memory_order_release);
+        x.store(42, std::memory_order_seq_cst);
+    }
+    {
+        std::atomic_store_explicit(&x, 42, std::memory_order_consume); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_store_explicit(&x, 42, std::memory_order_acquire); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_store_explicit(&x, 42, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_store_explicit(&vx, 42, std::memory_order_consume); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_store_explicit(&vx, 42, std::memory_order_acquire); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_store_explicit(&vx, 42, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        std::atomic_store_explicit(&x, 42, std::memory_order_relaxed);
+        std::atomic_store_explicit(&x, 42, std::memory_order_release);
+        std::atomic_store_explicit(&x, 42, std::memory_order_seq_cst);
+    }
+    // compare exchange weak
+    {
+        x.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        x.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        x.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_relaxed);
+        x.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_consume);
+        x.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_acquire);
+        x.compare_exchange_weak(val1, val2, std::memory_order_seq_cst, std::memory_order_seq_cst);
+        // Test that the cmpxchg overload with only one memory order argument
+        // does not generate any diagnostics.
+        x.compare_exchange_weak(val1, val2, std::memory_order_release);
+    }
+    {
+        std::atomic_compare_exchange_weak_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_compare_exchange_weak_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_compare_exchange_weak_explicit(&vx, &val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_compare_exchange_weak_explicit(&vx, &val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        std::atomic_compare_exchange_weak_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_relaxed);
+        std::atomic_compare_exchange_weak_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_consume);
+        std::atomic_compare_exchange_weak_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_acquire);
+        std::atomic_compare_exchange_weak_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_seq_cst);
+    }
+    // compare exchange strong
+    {
+        x.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        x.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        vx.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        x.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_relaxed);
+        x.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_consume);
+        x.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_acquire);
+        x.compare_exchange_strong(val1, val2, std::memory_order_seq_cst, std::memory_order_seq_cst);
+        // Test that the cmpxchg overload with only one memory order argument
+        // does not generate any diagnostics.
+        x.compare_exchange_strong(val1, val2, std::memory_order_release);
+    }
+    {
+        std::atomic_compare_exchange_strong_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_compare_exchange_strong_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_compare_exchange_strong_explicit(&vx, &val1, val2, std::memory_order_seq_cst, std::memory_order_release); // expected-warning {{memory order argument to atomic operation is invalid}}
+        std::atomic_compare_exchange_strong_explicit(&vx, &val1, val2, std::memory_order_seq_cst, std::memory_order_acq_rel); // expected-warning {{memory order argument to atomic operation is invalid}}
+        // valid memory orders
+        std::atomic_compare_exchange_strong_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_relaxed);
+        std::atomic_compare_exchange_strong_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_consume);
+        std::atomic_compare_exchange_strong_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_acquire);
+        std::atomic_compare_exchange_strong_explicit(&x, &val1, val2, std::memory_order_seq_cst, std::memory_order_seq_cst);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/stdatomic.h.syn/dont_hijack_header.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/stdatomic.h.syn/dont_hijack_header.compile.pass.cpp
new file mode 100644
index 0000000..f35eddf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/stdatomic.h.syn/dont_hijack_header.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// This test ensures that we don't hijack the <stdatomic.h> header even when compiling
+// before C++23, since Clang used to provide that header before libc++ provided one.
+
+// On GCC, the compiler-provided <stdatomic.h> is not C++ friendly, so including <stdatomic.h>
+// doesn't work at all if we don't use the <stdatomic.h> provided by libc++ in C++23 and above.
+// XFAIL: (c++11 || c++14 || c++17 || c++20) && gcc
+
+#include <stdatomic.h>
+
+void f() {
+  atomic_int i; // just make sure the header isn't empty
+  (void)i;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/atomics/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/atomics/version.pass.cpp
new file mode 100644
index 0000000..bb8af8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/atomics/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+#include <atomic>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/clang_tidy.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/clang_tidy.sh.cpp
new file mode 100644
index 0000000..57cabf3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/clang_tidy.sh.cpp
@@ -0,0 +1,276 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-clang-tidy
+
+// The GCC compiler flags are not always compatible with clang-tidy.
+// UNSUPPORTED: gcc
+
+// TODO: run clang-tidy with modules enabled once they are supported
+// RUN: %{clang-tidy} %s --warnings-as-errors=* -header-filter=.* --checks='-*,libcpp-*' --load=%{test-tools}/clang_tidy_checks/libcxx-tidy.plugin -- %{compile_flags} -fno-modules
+// RUN: %{clang-tidy} %s --warnings-as-errors=* -header-filter=.* --config-file=%S/../../.clang-tidy -- -Wweak-vtables %{compile_flags} -fno-modules
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+/*
+BEGIN-SCRIPT
+
+for header in public_headers:
+  print("{}#{}include <{}>{}".format(
+    '#if ' + header_restrictions[header] + '\n' if header in header_restrictions else '',
+    3 * ' ' if header in header_restrictions else '',
+    header,
+    '\n#endif' if header in header_restrictions else ''
+  ))
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+#include <algorithm>
+#include <any>
+#include <array>
+#include <atomic>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <barrier>
+#endif
+#include <bit>
+#include <bitset>
+#include <cassert>
+#include <ccomplex>
+#include <cctype>
+#include <cerrno>
+#include <cfenv>
+#include <cfloat>
+#include <charconv>
+#include <chrono>
+#include <cinttypes>
+#include <ciso646>
+#include <climits>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <clocale>
+#endif
+#include <cmath>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <codecvt>
+#endif
+#include <compare>
+#include <complex>
+#include <complex.h>
+#include <concepts>
+#include <condition_variable>
+#if (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#   include <coroutine>
+#endif
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstdbool>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctgmath>
+#include <ctime>
+#include <ctype.h>
+#include <cuchar>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwchar>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwctype>
+#endif
+#include <deque>
+#include <errno.h>
+#include <exception>
+#include <execution>
+#include <expected>
+#include <fenv.h>
+#if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#   include <filesystem>
+#endif
+#include <float.h>
+#include <format>
+#include <forward_list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#   include <fstream>
+#endif
+#include <functional>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <future>
+#endif
+#include <initializer_list>
+#include <inttypes.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iomanip>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ios>
+#endif
+#include <iosfwd>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iostream>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <istream>
+#endif
+#include <iterator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <latch>
+#endif
+#include <limits>
+#include <limits.h>
+#include <list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale.h>
+#endif
+#include <map>
+#include <math.h>
+#include <memory>
+#include <memory_resource>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <mutex>
+#endif
+#include <new>
+#include <numbers>
+#include <numeric>
+#include <optional>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ostream>
+#endif
+#include <queue>
+#include <random>
+#include <ranges>
+#include <ratio>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <regex>
+#endif
+#include <scoped_allocator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <semaphore>
+#endif
+#include <set>
+#include <setjmp.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <shared_mutex>
+#endif
+#include <source_location>
+#include <span>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <sstream>
+#endif
+#include <stack>
+#if __cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <stdatomic.h>
+#endif
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdexcept>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <streambuf>
+#endif
+#include <string>
+#include <string.h>
+#include <string_view>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <strstream>
+#endif
+#include <system_error>
+#include <tgmath.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <thread>
+#endif
+#include <tuple>
+#include <type_traits>
+#include <typeindex>
+#include <typeinfo>
+#include <uchar.h>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <valarray>
+#include <variant>
+#include <vector>
+#include <version>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wchar.h>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wctype.h>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/algorithm>
+#endif
+#if __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#   include <experimental/coroutine>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/deque>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/forward_list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/functional>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/iterator>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/memory_resource>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/propagate_const>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#   include <experimental/regex>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/simd>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/string>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/type_traits>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/utility>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/vector>
+#endif
+#include <ext/hash_map>
+#include <ext/hash_set>
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/at.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/at.abort.pass.cpp
new file mode 100644
index 0000000..36aa644
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/at.abort.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// mapped_type& at(const key_type& k);
+
+// Make sure we abort() when exceptions are disabled and we fetch a key that
+// is not in the map.
+
+// REQUIRES: no-exceptions
+
+#include <csignal>
+#include <cstdlib>
+#include <map>
+
+#include "test_macros.h"
+
+
+void exit_success(int) {
+    std::_Exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+    std::signal(SIGABRT, exit_success);
+    std::map<int, int> map;
+    map.at(1);
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/at.const.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/at.const.abort.pass.cpp
new file mode 100644
index 0000000..f3dcca8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/at.const.abort.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// const mapped_type& at(const key_type& k) const;
+
+// Make sure we abort() when exceptions are disabled and we fetch a key that
+// is not in the map.
+
+// REQUIRES: no-exceptions
+
+#include <csignal>
+#include <cstdlib>
+#include <map>
+
+#include "test_macros.h"
+
+
+void exit_success(int) {
+    std::_Exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+    std::signal(SIGABRT, exit_success);
+    std::map<int, int> const map;
+    map.at(1);
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/version.pass.cpp
new file mode 100644
index 0000000..ebc45e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/map/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+#include <map>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/non_const_comparator.incomplete.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/non_const_comparator.incomplete.verify.cpp
new file mode 100644
index 0000000..eb4d4cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/non_const_comparator.incomplete.verify.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Test that libc++ does not generate a warning diagnostic about the comparator
+// too early for containers of incomplete types.
+//
+// See PR41360.
+
+#include <set>
+#include <map>
+#include <functional>
+
+#include "test_macros.h"
+
+
+template <template <typename ...> class Container>
+void test_set() {
+  struct KeyBase { };
+  struct KeyDerived;  // derives from KeyBase, but incomplete at this point
+
+  // Name the type but don't instantiate it.
+  using C = Container<KeyDerived*, std::less<KeyBase*>>;
+
+  // Instantiate it but don't ODR use any members.
+  typename C::value_type dummy; (void)dummy;
+
+  // Complete the types.
+  struct KeyDerived : KeyBase { };
+
+  C c; // ODR use it, which should be OK
+}
+
+template <template <typename ...> class Container>
+void test_map() {
+  struct Value { };
+  struct KeyBase { };
+  struct KeyDerived;
+  using C = Container<KeyDerived*, Value, std::less<KeyBase*>>;
+  typename C::value_type dummy; (void)dummy;
+  struct KeyDerived : KeyBase { };
+  C c;
+}
+
+int main(int, char**) {
+  // expected-no-diagnostics
+  test_set<std::set>();
+  test_set<std::multiset>();
+  test_map<std::map>();
+  test_map<std::multimap>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/non_const_comparator.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/non_const_comparator.verify.cpp
new file mode 100644
index 0000000..61cdc2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/non_const_comparator.verify.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: diagnose-if-support
+
+// Test that libc++ generates a warning diagnostic when the container is
+// provided a non-const callable comparator.
+
+#include <map>
+#include <set>
+#include <type_traits> // for __invokable
+
+struct BadCompare {
+  template <class T, class U>
+  bool operator()(T const& t, U const& u) {
+    return t < u;
+  }
+};
+
+int main(int, char**) {
+  static_assert(!std::__invokable<BadCompare const&, int const&, int const&>::value, "");
+  static_assert(std::__invokable<BadCompare&, int const&, int const&>::value, "");
+
+  // expected-warning@set:* 2 {{the specified comparator type does not provide a viable const call operator}}
+  // expected-warning@map:* 2 {{the specified comparator type does not provide a viable const call operator}}
+  {
+    using C = std::set<int, BadCompare>;
+    C s;
+  }
+  {
+    using C = std::multiset<long, BadCompare>;
+    C s;
+  }
+  {
+    using C = std::map<int, int, BadCompare>;
+    C s;
+  }
+  {
+    using C = std::multimap<long, int, BadCompare>;
+    C s;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/set/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/set/version.pass.cpp
new file mode 100644
index 0000000..f5a76c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/set/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+#include <set>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_balance_after_insert.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_balance_after_insert.pass.cpp
new file mode 100644
index 0000000..c3d100e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_balance_after_insert.pass.cpp
@@ -0,0 +1,1622 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Not a portable test
+
+// Precondition:  __root->__is_black_ == true
+// template <class _NodePtr>
+// void
+// __tree_balance_after_insert(_NodePtr __root, _NodePtr __x)
+
+#include <__tree>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Node
+{
+    Node* __left_;
+    Node* __right_;
+    Node* __parent_;
+    bool __is_black_;
+
+    Node* __parent_unsafe() const { return __parent_; }
+    void __set_parent(Node* x) { __parent_ = x;}
+
+    Node() : __left_(), __right_(), __parent_(), __is_black_() {}
+};
+
+void
+test1()
+{
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &a;
+        b.__right_ = 0;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = 0;
+        d.__right_ = 0;
+        d.__is_black_ = false;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == 0);
+        assert(d.__right_ == 0);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = 0;
+        b.__right_ = &a;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = 0;
+        d.__right_ = 0;
+        d.__is_black_ = false;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == &a);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == 0);
+        assert(d.__right_ == 0);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = 0;
+        b.__right_ = 0;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = &a;
+        d.__right_ = 0;
+        d.__is_black_ = false;
+
+        a.__parent_ = &d;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == &a);
+        assert(d.__right_ == 0);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &d);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = 0;
+        b.__right_ = 0;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = 0;
+        d.__right_ = &a;
+        d.__is_black_ = false;
+
+        a.__parent_ = &d;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == 0);
+        assert(d.__right_ == &a);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &d);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+        Node h;
+        Node i;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &a;
+        b.__right_ = &g;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = &h;
+        d.__right_ = &i;
+        d.__is_black_ = false;
+
+        a.__parent_ = &b;
+        a.__left_ = &e;
+        a.__right_ = &f;
+        a.__is_black_ = false;
+
+        e.__parent_ = &a;
+        e.__is_black_ = true;
+
+        f.__parent_ = &a;
+        f.__is_black_ = true;
+
+        g.__parent_ = &b;
+        g.__is_black_ = true;
+
+        h.__parent_ = &d;
+        h.__is_black_ = true;
+
+        i.__parent_ = &d;
+        i.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &g);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == &h);
+        assert(d.__right_ == &i);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == &e);
+        assert(a.__right_ == &f);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+        Node h;
+        Node i;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &g;
+        b.__right_ = &a;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = &h;
+        d.__right_ = &i;
+        d.__is_black_ = false;
+
+        a.__parent_ = &b;
+        a.__left_ = &e;
+        a.__right_ = &f;
+        a.__is_black_ = false;
+
+        e.__parent_ = &a;
+        e.__is_black_ = true;
+
+        f.__parent_ = &a;
+        f.__is_black_ = true;
+
+        g.__parent_ = &b;
+        g.__is_black_ = true;
+
+        h.__parent_ = &d;
+        h.__is_black_ = true;
+
+        i.__parent_ = &d;
+        i.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == &g);
+        assert(b.__right_ == &a);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == &h);
+        assert(d.__right_ == &i);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == &e);
+        assert(a.__right_ == &f);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+        Node h;
+        Node i;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &g;
+        b.__right_ = &h;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = &a;
+        d.__right_ = &i;
+        d.__is_black_ = false;
+
+        a.__parent_ = &d;
+        a.__left_ = &e;
+        a.__right_ = &f;
+        a.__is_black_ = false;
+
+        e.__parent_ = &a;
+        e.__is_black_ = true;
+
+        f.__parent_ = &a;
+        f.__is_black_ = true;
+
+        g.__parent_ = &b;
+        g.__is_black_ = true;
+
+        h.__parent_ = &b;
+        h.__is_black_ = true;
+
+        i.__parent_ = &d;
+        i.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == &g);
+        assert(b.__right_ == &h);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == &a);
+        assert(d.__right_ == &i);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &d);
+        assert(a.__left_ == &e);
+        assert(a.__right_ == &f);
+        assert(a.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+        Node h;
+        Node i;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &d;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &g;
+        b.__right_ = &h;
+        b.__is_black_ = false;
+
+        d.__parent_ = &c;
+        d.__left_ = &i;
+        d.__right_ = &a;
+        d.__is_black_ = false;
+
+        a.__parent_ = &d;
+        a.__left_ = &e;
+        a.__right_ = &f;
+        a.__is_black_ = false;
+
+        e.__parent_ = &a;
+        e.__is_black_ = true;
+
+        f.__parent_ = &a;
+        f.__is_black_ = true;
+
+        g.__parent_ = &b;
+        g.__is_black_ = true;
+
+        h.__parent_ = &b;
+        h.__is_black_ = true;
+
+        i.__parent_ = &d;
+        i.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &c);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &b);
+        assert(c.__right_ == &d);
+        assert(c.__is_black_ == true);
+
+        assert(b.__parent_ == &c);
+        assert(b.__left_ == &g);
+        assert(b.__right_ == &h);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &c);
+        assert(d.__left_ == &i);
+        assert(d.__right_ == &a);
+        assert(d.__is_black_ == true);
+
+        assert(a.__parent_ == &d);
+        assert(a.__left_ == &e);
+        assert(a.__right_ == &f);
+        assert(a.__is_black_ == false);
+    }
+}
+
+void
+test2()
+{
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &a;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        a.__parent_ = &c;
+        a.__left_ = 0;
+        a.__right_ = &b;
+        a.__is_black_ = false;
+
+        b.__parent_ = &a;
+        b.__left_ = 0;
+        b.__right_ = 0;
+        b.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &a;
+
+        a.__parent_ = &root;
+        a.__left_ = 0;
+        a.__right_ = &c;
+        a.__is_black_ = true;
+
+        c.__parent_ = &a;
+        c.__left_ = &b;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        b.__parent_ = &c;
+        b.__left_ = 0;
+        b.__right_ = 0;
+        b.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &a;
+        c.__right_ = &g;
+        c.__is_black_ = true;
+
+        a.__parent_ = &c;
+        a.__left_ = &d;
+        a.__right_ = &b;
+        a.__is_black_ = false;
+
+        b.__parent_ = &a;
+        b.__left_ = &e;
+        b.__right_ = &f;
+        b.__is_black_ = false;
+
+        d.__parent_ = &a;
+        d.__is_black_ = true;
+
+        e.__parent_ = &b;
+        e.__is_black_ = true;
+
+        f.__parent_ = &b;
+        f.__is_black_ = true;
+
+        g.__parent_ = &c;
+        g.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == &f);
+        assert(c.__right_ == &g);
+        assert(c.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == &d);
+        assert(a.__right_ == &e);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &a);
+        assert(d.__is_black_ == true);
+
+        assert(e.__parent_ == &a);
+        assert(e.__is_black_ == true);
+
+        assert(f.__parent_ == &c);
+        assert(f.__is_black_ == true);
+
+        assert(g.__parent_ == &c);
+        assert(g.__is_black_ == true);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+
+        root.__left_ = &a;
+
+        a.__parent_ = &root;
+        a.__left_ = &d;
+        a.__right_ = &c;
+        a.__is_black_ = true;
+
+        c.__parent_ = &a;
+        c.__left_ = &b;
+        c.__right_ = &g;
+        c.__is_black_ = false;
+
+        b.__parent_ = &c;
+        b.__left_ = &e;
+        b.__right_ = &f;
+        b.__is_black_ = false;
+
+        d.__parent_ = &a;
+        d.__is_black_ = true;
+
+        e.__parent_ = &b;
+        e.__is_black_ = true;
+
+        f.__parent_ = &b;
+        f.__is_black_ = true;
+
+        g.__parent_ = &c;
+        g.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == &f);
+        assert(c.__right_ == &g);
+        assert(c.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == &d);
+        assert(a.__right_ == &e);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &a);
+        assert(d.__is_black_ == true);
+
+        assert(e.__parent_ == &a);
+        assert(e.__is_black_ == true);
+
+        assert(f.__parent_ == &c);
+        assert(f.__is_black_ == true);
+
+        assert(g.__parent_ == &c);
+        assert(g.__is_black_ == true);
+    }
+}
+
+void
+test3()
+{
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &a;
+        b.__right_ = 0;
+        b.__is_black_ = false;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &a;
+
+        a.__parent_ = &root;
+        a.__left_ = 0;
+        a.__right_ = &b;
+        a.__is_black_ = true;
+
+        b.__parent_ = &a;
+        b.__left_ = 0;
+        b.__right_ = &c;
+        b.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_balance_after_insert(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+
+        root.__left_ = &c;
+
+        c.__parent_ = &root;
+        c.__left_ = &b;
+        c.__right_ = &g;
+        c.__is_black_ = true;
+
+        b.__parent_ = &c;
+        b.__left_ = &a;
+        b.__right_ = &f;
+        b.__is_black_ = false;
+
+        a.__parent_ = &b;
+        a.__left_ = &d;
+        a.__right_ = &e;
+        a.__is_black_ = false;
+
+        d.__parent_ = &a;
+        d.__is_black_ = true;
+
+        e.__parent_ = &a;
+        e.__is_black_ = true;
+
+        f.__parent_ = &b;
+        f.__is_black_ = true;
+
+        g.__parent_ = &c;
+        g.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == &f);
+        assert(c.__right_ == &g);
+        assert(c.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == &d);
+        assert(a.__right_ == &e);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &a);
+        assert(d.__is_black_ == true);
+
+        assert(e.__parent_ == &a);
+        assert(e.__is_black_ == true);
+
+        assert(f.__parent_ == &c);
+        assert(f.__is_black_ == true);
+
+        assert(g.__parent_ == &c);
+        assert(g.__is_black_ == true);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node g;
+
+        root.__left_ = &a;
+
+        a.__parent_ = &root;
+        a.__left_ = &d;
+        a.__right_ = &b;
+        a.__is_black_ = true;
+
+        b.__parent_ = &a;
+        b.__left_ = &e;
+        b.__right_ = &c;
+        b.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = &f;
+        c.__right_ = &g;
+        c.__is_black_ = false;
+
+        d.__parent_ = &a;
+        d.__is_black_ = true;
+
+        e.__parent_ = &b;
+        e.__is_black_ = true;
+
+        f.__parent_ = &c;
+        f.__is_black_ = true;
+
+        g.__parent_ = &c;
+        g.__is_black_ = true;
+
+        std::__tree_balance_after_insert(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__left_ == &b);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == &f);
+        assert(c.__right_ == &g);
+        assert(c.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == &d);
+        assert(a.__right_ == &e);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(d.__parent_ == &a);
+        assert(d.__is_black_ == true);
+
+        assert(e.__parent_ == &a);
+        assert(e.__is_black_ == true);
+
+        assert(f.__parent_ == &c);
+        assert(f.__is_black_ == true);
+
+        assert(g.__parent_ == &c);
+        assert(g.__is_black_ == true);
+    }
+}
+
+void
+test4()
+{
+    Node root;
+    Node a;
+    Node b;
+    Node c;
+    Node d;
+    Node e;
+    Node f;
+    Node g;
+    Node h;
+
+    root.__left_ = &a;
+    a.__parent_ = &root;
+
+    std::__tree_balance_after_insert(root.__left_, &a);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &a);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(a.__parent_ == &root);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    a.__right_ = &b;
+    b.__parent_ = &a;
+
+    std::__tree_balance_after_insert(root.__left_, &b);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &a);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(a.__parent_ == &root);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == &b);
+    assert(a.__is_black_ == true);
+
+    assert(b.__parent_ == &a);
+    assert(b.__left_ == 0);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == false);
+
+    b.__right_ = &c;
+    c.__parent_ = &b;
+
+    std::__tree_balance_after_insert(root.__left_, &c);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &c);
+    assert(b.__is_black_ == true);
+
+    assert(c.__parent_ == &b);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == false);
+
+    c.__right_ = &d;
+    d.__parent_ = &c;
+
+    std::__tree_balance_after_insert(root.__left_, &d);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &c);
+    assert(b.__is_black_ == true);
+
+    assert(c.__parent_ == &b);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == &d);
+    assert(c.__is_black_ == true);
+
+    assert(d.__parent_ == &c);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == false);
+
+    d.__right_ = &e;
+    e.__parent_ = &d;
+
+    std::__tree_balance_after_insert(root.__left_, &e);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &d);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    assert(d.__parent_ == &b);
+    assert(d.__left_ == &c);
+    assert(d.__right_ == &e);
+    assert(d.__is_black_ == true);
+
+    assert(c.__parent_ == &d);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == false);
+
+    assert(e.__parent_ == &d);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == false);
+
+    e.__right_ = &f;
+    f.__parent_ = &e;
+
+    std::__tree_balance_after_insert(root.__left_, &f);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &d);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    assert(d.__parent_ == &b);
+    assert(d.__left_ == &c);
+    assert(d.__right_ == &e);
+    assert(d.__is_black_ == false);
+
+    assert(c.__parent_ == &d);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == true);
+
+    assert(e.__parent_ == &d);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == &f);
+    assert(e.__is_black_ == true);
+
+    assert(f.__parent_ == &e);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == false);
+
+    f.__right_ = &g;
+    g.__parent_ = &f;
+
+    std::__tree_balance_after_insert(root.__left_, &g);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &d);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    assert(d.__parent_ == &b);
+    assert(d.__left_ == &c);
+    assert(d.__right_ == &f);
+    assert(d.__is_black_ == false);
+
+    assert(c.__parent_ == &d);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == true);
+
+    assert(f.__parent_ == &d);
+    assert(f.__left_ == &e);
+    assert(f.__right_ == &g);
+    assert(f.__is_black_ == true);
+
+    assert(e.__parent_ == &f);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == false);
+
+    assert(g.__parent_ == &f);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == 0);
+    assert(g.__is_black_ == false);
+
+    g.__right_ = &h;
+    h.__parent_ = &g;
+
+    std::__tree_balance_after_insert(root.__left_, &h);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &d);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(d.__parent_ == &root);
+    assert(d.__left_ == &b);
+    assert(d.__right_ == &f);
+    assert(d.__is_black_ == true);
+
+    assert(b.__parent_ == &d);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &c);
+    assert(b.__is_black_ == false);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    assert(c.__parent_ == &b);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == true);
+
+    assert(f.__parent_ == &d);
+    assert(f.__left_ == &e);
+    assert(f.__right_ == &g);
+    assert(f.__is_black_ == false);
+
+    assert(e.__parent_ == &f);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == true);
+
+    assert(g.__parent_ == &f);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+}
+
+void
+test5()
+{
+    Node root;
+    Node a;
+    Node b;
+    Node c;
+    Node d;
+    Node e;
+    Node f;
+    Node g;
+    Node h;
+
+    root.__left_ = &h;
+    h.__parent_ = &root;
+
+    std::__tree_balance_after_insert(root.__left_, &h);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &h);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(h.__parent_ == &root);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    h.__left_ = &g;
+    g.__parent_ = &h;
+
+    std::__tree_balance_after_insert(root.__left_, &g);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &h);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(h.__parent_ == &root);
+    assert(h.__left_ == &g);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    assert(g.__parent_ == &h);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == 0);
+    assert(g.__is_black_ == false);
+
+    g.__left_ = &f;
+    f.__parent_ = &g;
+
+    std::__tree_balance_after_insert(root.__left_, &f);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == &f);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(f.__parent_ == &g);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == false);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+
+    f.__left_ = &e;
+    e.__parent_ = &f;
+
+    std::__tree_balance_after_insert(root.__left_, &e);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == &f);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(f.__parent_ == &g);
+    assert(f.__left_ == &e);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == true);
+
+    assert(e.__parent_ == &f);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == false);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    e.__left_ = &d;
+    d.__parent_ = &e;
+
+    std::__tree_balance_after_insert(root.__left_, &d);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == &e);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(e.__parent_ == &g);
+    assert(e.__left_ == &d);
+    assert(e.__right_ == &f);
+    assert(e.__is_black_ == true);
+
+    assert(d.__parent_ == &e);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == false);
+
+    assert(f.__parent_ == &e);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == false);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    d.__left_ = &c;
+    c.__parent_ = &d;
+
+    std::__tree_balance_after_insert(root.__left_, &c);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == &e);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(e.__parent_ == &g);
+    assert(e.__left_ == &d);
+    assert(e.__right_ == &f);
+    assert(e.__is_black_ == false);
+
+    assert(d.__parent_ == &e);
+    assert(d.__left_ == &c);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == true);
+
+    assert(c.__parent_ == &d);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == false);
+
+    assert(f.__parent_ == &e);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    c.__left_ = &b;
+    b.__parent_ = &c;
+
+    std::__tree_balance_after_insert(root.__left_, &b);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == &e);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(e.__parent_ == &g);
+    assert(e.__left_ == &c);
+    assert(e.__right_ == &f);
+    assert(e.__is_black_ == false);
+
+    assert(c.__parent_ == &e);
+    assert(c.__left_ == &b);
+    assert(c.__right_ == &d);
+    assert(c.__is_black_ == true);
+
+    assert(b.__parent_ == &c);
+    assert(b.__left_ == 0);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == false);
+
+    assert(d.__parent_ == &c);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == false);
+
+    assert(f.__parent_ == &e);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    b.__left_ = &a;
+    a.__parent_ = &b;
+
+    std::__tree_balance_after_insert(root.__left_, &a);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &e);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(e.__parent_ == &root);
+    assert(e.__left_ == &c);
+    assert(e.__right_ == &g);
+    assert(e.__is_black_ == true);
+
+    assert(c.__parent_ == &e);
+    assert(c.__left_ == &b);
+    assert(c.__right_ == &d);
+    assert(c.__is_black_ == false);
+
+    assert(b.__parent_ == &c);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    assert(d.__parent_ == &c);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == true);
+
+    assert(g.__parent_ == &e);
+    assert(g.__left_ == &f);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == false);
+
+    assert(f.__parent_ == &g);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_key_value_traits.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_key_value_traits.pass.cpp
new file mode 100644
index 0000000..12289c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_key_value_traits.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__tree>
+#include <map>
+#include <set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+void testKeyValueTrait() {
+  {
+    typedef int Tp;
+    typedef std::__tree_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, int>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type, Tp>::value), "");
+    static_assert(Traits::__is_map == false, "");
+  }
+  {
+    typedef std::pair<int, int> Tp;
+    typedef std::__tree_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type, Tp>::value), "");
+    static_assert(Traits::__is_map == false, "");
+  }
+  {
+    typedef std::pair<const int, int> Tp;
+    typedef std::__tree_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type, Tp>::value), "");
+    static_assert(Traits::__is_map == false, "");
+  }
+  {
+    typedef std::__value_type<int, int> Tp;
+    typedef std::__tree_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, int>::value), "");
+    static_assert((std::is_same<Traits::mapped_type, int>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type,
+                               std::pair<const int, int> >::value), "");
+    static_assert((std::is_same<Traits::__map_value_type,
+                               std::pair<const int, int> >::value), "");
+    static_assert(Traits::__is_map == true, "");
+  }
+}
+
+int main(int, char**) {
+  testKeyValueTrait();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_left_rotate.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_left_rotate.pass.cpp
new file mode 100644
index 0000000..b766489
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_left_rotate.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Not a portable test
+
+// Precondition:  __x->__right_ != nullptr
+// template <class _NodePtr>
+// void
+// __tree_left_rotate(_NodePtr __x);
+
+#include <__tree>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Node
+{
+    Node* __left_;
+    Node* __right_;
+    Node* __parent_;
+
+    Node* __parent_unsafe() const { return __parent_; }
+    void __set_parent(Node* x) { __parent_ = x;}
+
+    Node() : __left_(), __right_(), __parent_() {}
+};
+
+void
+test1()
+{
+    Node root;
+    Node x;
+    Node y;
+    root.__left_ = &x;
+    x.__left_ = 0;
+    x.__right_ = &y;
+    x.__parent_ = &root;
+    y.__left_ = 0;
+    y.__right_ = 0;
+    y.__parent_ = &x;
+    std::__tree_left_rotate(&x);
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &y);
+    assert(root.__right_ == 0);
+    assert(y.__parent_ == &root);
+    assert(y.__left_ == &x);
+    assert(y.__right_ == 0);
+    assert(x.__parent_ == &y);
+    assert(x.__left_ == 0);
+    assert(x.__right_ == 0);
+}
+
+void
+test2()
+{
+    Node root;
+    Node x;
+    Node y;
+    Node a;
+    Node b;
+    Node c;
+    root.__left_ = &x;
+    x.__left_ = &a;
+    x.__right_ = &y;
+    x.__parent_ = &root;
+    y.__left_ = &b;
+    y.__right_ = &c;
+    y.__parent_ = &x;
+    a.__parent_ = &x;
+    b.__parent_ = &y;
+    c.__parent_ = &y;
+    std::__tree_left_rotate(&x);
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &y);
+    assert(root.__right_ == 0);
+    assert(y.__parent_ == &root);
+    assert(y.__left_ == &x);
+    assert(y.__right_ == &c);
+    assert(x.__parent_ == &y);
+    assert(x.__left_ == &a);
+    assert(x.__right_ == &b);
+    assert(a.__parent_ == &x);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(b.__parent_ == &x);
+    assert(b.__left_ == 0);
+    assert(b.__right_ == 0);
+    assert(c.__parent_ == &y);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_remove.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_remove.pass.cpp
new file mode 100644
index 0000000..e9afd84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_remove.pass.cpp
@@ -0,0 +1,1654 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Not a portable test
+
+// Returns __tree_next(__z)
+// template <class _NodePtr>
+// void
+// __tree_remove(_NodePtr __root, _NodePtr __z)
+
+#include <__tree>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Node
+{
+    Node* __left_;
+    Node* __right_;
+    Node* __parent_;
+    bool __is_black_;
+
+    Node* __parent_unsafe() const { return __parent_; }
+    void __set_parent(Node* x) { __parent_ = x;}
+
+    Node() : __left_(), __right_(), __parent_(), __is_black_() {}
+};
+
+void
+test1()
+{
+    {
+        // Left
+        // Case 1 -> Case 2 -> x is red turned to black
+        Node root;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node y;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &y;
+        b.__right_ = &d;
+        b.__is_black_ = true;
+
+        y.__parent_ = &b;
+        y.__left_ = 0;
+        y.__right_ = 0;
+        y.__is_black_ = true;
+
+        d.__parent_ = &b;
+        d.__left_ = &c;
+        d.__right_ = &e;
+        d.__is_black_ = false;
+
+        c.__parent_ = &d;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        e.__parent_ = &d;
+        e.__left_ = 0;
+        e.__right_ = 0;
+        e.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &y);
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &d);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(d.__parent_ == &root);
+        assert(d.__left_ == &b);
+        assert(d.__right_ == &e);
+        assert(d.__is_black_ == true);
+
+        assert(b.__parent_ == &d);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        assert(e.__parent_ == &d);
+        assert(e.__left_ == 0);
+        assert(e.__right_ == 0);
+        assert(e.__is_black_ == true);
+    }
+    {
+        // Right
+        // Case 1 -> Case 2 -> x is red turned to black
+        Node root;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node y;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__right_ = &y;
+        b.__left_ = &d;
+        b.__is_black_ = true;
+
+        y.__parent_ = &b;
+        y.__right_ = 0;
+        y.__left_ = 0;
+        y.__is_black_ = true;
+
+        d.__parent_ = &b;
+        d.__right_ = &c;
+        d.__left_ = &e;
+        d.__is_black_ = false;
+
+        c.__parent_ = &d;
+        c.__right_ = 0;
+        c.__left_ = 0;
+        c.__is_black_ = true;
+
+        e.__parent_ = &d;
+        e.__right_ = 0;
+        e.__left_ = 0;
+        e.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &y);
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &d);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(d.__parent_ == &root);
+        assert(d.__right_ == &b);
+        assert(d.__left_ == &e);
+        assert(d.__is_black_ == true);
+
+        assert(b.__parent_ == &d);
+        assert(b.__right_ == 0);
+        assert(b.__left_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &b);
+        assert(c.__right_ == 0);
+        assert(c.__left_ == 0);
+        assert(c.__is_black_ == false);
+
+        assert(e.__parent_ == &d);
+        assert(e.__right_ == 0);
+        assert(e.__left_ == 0);
+        assert(e.__is_black_ == true);
+    }
+    {
+        // Left
+        // Case 1 -> Case 3 -> Case 4
+        Node root;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node y;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &y;
+        b.__right_ = &d;
+        b.__is_black_ = true;
+
+        y.__parent_ = &b;
+        y.__left_ = 0;
+        y.__right_ = 0;
+        y.__is_black_ = true;
+
+        d.__parent_ = &b;
+        d.__left_ = &c;
+        d.__right_ = &e;
+        d.__is_black_ = false;
+
+        c.__parent_ = &d;
+        c.__left_ = &f;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        e.__parent_ = &d;
+        e.__left_ = 0;
+        e.__right_ = 0;
+        e.__is_black_ = true;
+
+        f.__parent_ = &c;
+        f.__left_ = 0;
+        f.__right_ = 0;
+        f.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &y);
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &d);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(d.__parent_ == &root);
+        assert(d.__left_ == &f);
+        assert(d.__right_ == &e);
+        assert(d.__is_black_ == true);
+
+        assert(f.__parent_ == &d);
+        assert(f.__left_ == &b);
+        assert(f.__right_ == &c);
+        assert(f.__is_black_ == false);
+
+        assert(b.__parent_ == &f);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &f);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        assert(e.__parent_ == &d);
+        assert(e.__left_ == 0);
+        assert(e.__right_ == 0);
+        assert(e.__is_black_ == true);
+    }
+    {
+        // Right
+        // Case 1 -> Case 3 -> Case 4
+        Node root;
+        Node b;
+        Node c;
+        Node d;
+        Node e;
+        Node f;
+        Node y;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__right_ = &y;
+        b.__left_ = &d;
+        b.__is_black_ = true;
+
+        y.__parent_ = &b;
+        y.__right_ = 0;
+        y.__left_ = 0;
+        y.__is_black_ = true;
+
+        d.__parent_ = &b;
+        d.__right_ = &c;
+        d.__left_ = &e;
+        d.__is_black_ = false;
+
+        c.__parent_ = &d;
+        c.__right_ = &f;
+        c.__left_ = 0;
+        c.__is_black_ = true;
+
+        e.__parent_ = &d;
+        e.__right_ = 0;
+        e.__left_ = 0;
+        e.__is_black_ = true;
+
+        f.__parent_ = &c;
+        f.__right_ = 0;
+        f.__left_ = 0;
+        f.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &y);
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &d);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(d.__parent_ == &root);
+        assert(d.__right_ == &f);
+        assert(d.__left_ == &e);
+        assert(d.__is_black_ == true);
+
+        assert(f.__parent_ == &d);
+        assert(f.__right_ == &b);
+        assert(f.__left_ == &c);
+        assert(f.__is_black_ == false);
+
+        assert(b.__parent_ == &f);
+        assert(b.__right_ == 0);
+        assert(b.__left_ == 0);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &f);
+        assert(c.__right_ == 0);
+        assert(c.__left_ == 0);
+        assert(c.__is_black_ == true);
+
+        assert(e.__parent_ == &d);
+        assert(e.__right_ == 0);
+        assert(e.__left_ == 0);
+        assert(e.__is_black_ == true);
+    }
+}
+
+void
+test2()
+{
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = true;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = true;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == &c);
+        assert(b.__is_black_ == true);
+
+        assert(c.__parent_ == &b);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == false);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = true;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &c);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &a);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &c);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &a);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == 0);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = true;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &c);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &a);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &a);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &root);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &c);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &c);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(c.__parent_ == &root);
+        assert(c.__left_ == &a);
+        assert(c.__right_ == 0);
+        assert(c.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &a);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &root);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = true;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &a);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &root);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &a);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &root);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = true;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = true;
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+    {
+        Node root;
+        Node a;
+        Node b;
+        Node c;
+
+        root.__left_ = &b;
+
+        b.__parent_ = &root;
+        b.__left_ = &a;
+        b.__right_ = &c;
+        b.__is_black_ = true;
+
+        a.__parent_ = &b;
+        a.__left_ = 0;
+        a.__right_ = 0;
+        a.__is_black_ = false;
+
+        c.__parent_ = &b;
+        c.__left_ = 0;
+        c.__right_ = 0;
+        c.__is_black_ = false;
+
+        std::__tree_remove(root.__left_, &c);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(a.__parent_ == &b);
+        assert(a.__left_ == 0);
+        assert(a.__right_ == 0);
+        assert(a.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == &a);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &a);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == &b);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+
+        assert(b.__parent_ == &root);
+        assert(b.__left_ == 0);
+        assert(b.__right_ == 0);
+        assert(b.__is_black_ == true);
+
+        std::__tree_remove(root.__left_, &b);
+
+        assert(std::__tree_invariant(root.__left_));
+
+        assert(root.__parent_ == 0);
+        assert(root.__left_ == 0);
+        assert(root.__right_ == 0);
+        assert(root.__is_black_ == false);
+    }
+}
+
+void
+test3()
+{
+    Node root;
+    Node a;
+    Node b;
+    Node c;
+    Node d;
+    Node e;
+    Node f;
+    Node g;
+    Node h;
+
+    root.__left_ = &e;
+
+    e.__parent_ = &root;
+    e.__left_ = &c;
+    e.__right_ = &g;
+    e.__is_black_ = true;
+
+    c.__parent_ = &e;
+    c.__left_ = &b;
+    c.__right_ = &d;
+    c.__is_black_ = false;
+
+    g.__parent_ = &e;
+    g.__left_ = &f;
+    g.__right_ = &h;
+    g.__is_black_ = false;
+
+    b.__parent_ = &c;
+    b.__left_ = &a;
+    b.__right_ = 0;
+    b.__is_black_ = true;
+
+    d.__parent_ = &c;
+    d.__left_ = 0;
+    d.__right_ = 0;
+    d.__is_black_ = true;
+
+    f.__parent_ = &g;
+    f.__left_ = 0;
+    f.__right_ = 0;
+    f.__is_black_ = true;
+
+    h.__parent_ = &g;
+    h.__left_ = 0;
+    h.__right_ = 0;
+    h.__is_black_ = true;
+
+    a.__parent_ = &b;
+    a.__left_ = 0;
+    a.__right_ = 0;
+    a.__is_black_ = false;
+
+    assert(std::__tree_invariant(root.__left_));
+
+    std::__tree_remove(root.__left_, &h);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &e);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(e.__parent_ == &root);
+    assert(e.__left_ == &c);
+    assert(e.__right_ == &g);
+    assert(e.__is_black_ == true);
+
+    assert(c.__parent_ == &e);
+    assert(c.__left_ == &b);
+    assert(c.__right_ == &d);
+    assert(c.__is_black_ == false);
+
+    assert(g.__parent_ == &e);
+    assert(g.__left_ == &f);
+    assert(g.__right_ == 0);
+    assert(g.__is_black_ == true);
+
+    assert(b.__parent_ == &c);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    assert(d.__parent_ == &c);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == true);
+
+    assert(f.__parent_ == &g);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &g);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &e);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(e.__parent_ == &root);
+    assert(e.__left_ == &c);
+    assert(e.__right_ == &f);
+    assert(e.__is_black_ == true);
+
+    assert(c.__parent_ == &e);
+    assert(c.__left_ == &b);
+    assert(c.__right_ == &d);
+    assert(c.__is_black_ == false);
+
+    assert(b.__parent_ == &c);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    assert(d.__parent_ == &c);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == true);
+
+    assert(f.__parent_ == &e);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == true);
+
+    std::__tree_remove(root.__left_, &f);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &c);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(c.__parent_ == &root);
+    assert(c.__left_ == &b);
+    assert(c.__right_ == &e);
+    assert(c.__is_black_ == true);
+
+    assert(b.__parent_ == &c);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == true);
+
+    assert(e.__parent_ == &c);
+    assert(e.__left_ == &d);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    assert(d.__parent_ == &e);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &e);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &c);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(c.__parent_ == &root);
+    assert(c.__left_ == &b);
+    assert(c.__right_ == &d);
+    assert(c.__is_black_ == true);
+
+    assert(b.__parent_ == &c);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    assert(d.__parent_ == &c);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == 0);
+    assert(d.__is_black_ == true);
+
+    std::__tree_remove(root.__left_, &d);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == &c);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    assert(c.__parent_ == &b);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == true);
+
+    std::__tree_remove(root.__left_, &c);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &b);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(b.__parent_ == &root);
+    assert(b.__left_ == &a);
+    assert(b.__right_ == 0);
+    assert(b.__is_black_ == true);
+
+    assert(a.__parent_ == &b);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &b);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &a);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(a.__parent_ == &root);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(a.__is_black_ == true);
+
+    std::__tree_remove(root.__left_, &a);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == 0);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+}
+
+void
+test4()
+{
+    Node root;
+    Node a;
+    Node b;
+    Node c;
+    Node d;
+    Node e;
+    Node f;
+    Node g;
+    Node h;
+
+    root.__left_ = &d;
+
+    d.__parent_ = &root;
+    d.__left_ = &b;
+    d.__right_ = &f;
+    d.__is_black_ = true;
+
+    b.__parent_ = &d;
+    b.__left_ = &a;
+    b.__right_ = &c;
+    b.__is_black_ = false;
+
+    f.__parent_ = &d;
+    f.__left_ = &e;
+    f.__right_ = &g;
+    f.__is_black_ = false;
+
+    a.__parent_ = &b;
+    a.__left_ = 0;
+    a.__right_ = 0;
+    a.__is_black_ = true;
+
+    c.__parent_ = &b;
+    c.__left_ = 0;
+    c.__right_ = 0;
+    c.__is_black_ = true;
+
+    e.__parent_ = &f;
+    e.__left_ = 0;
+    e.__right_ = 0;
+    e.__is_black_ = true;
+
+    g.__parent_ = &f;
+    g.__left_ = 0;
+    g.__right_ = &h;
+    g.__is_black_ = true;
+
+    h.__parent_ = &g;
+    h.__left_ = 0;
+    h.__right_ = 0;
+    h.__is_black_ = false;
+
+    assert(std::__tree_invariant(root.__left_));
+
+    std::__tree_remove(root.__left_, &a);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &d);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(d.__parent_ == &root);
+    assert(d.__left_ == &b);
+    assert(d.__right_ == &f);
+    assert(d.__is_black_ == true);
+
+    assert(b.__parent_ == &d);
+    assert(b.__left_ == 0);
+    assert(b.__right_ == &c);
+    assert(b.__is_black_ == true);
+
+    assert(f.__parent_ == &d);
+    assert(f.__left_ == &e);
+    assert(f.__right_ == &g);
+    assert(f.__is_black_ == false);
+
+    assert(c.__parent_ == &b);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == false);
+
+    assert(e.__parent_ == &f);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == true);
+
+    assert(g.__parent_ == &f);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &b);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &d);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(d.__parent_ == &root);
+    assert(d.__left_ == &c);
+    assert(d.__right_ == &f);
+    assert(d.__is_black_ == true);
+
+    assert(c.__parent_ == &d);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+    assert(c.__is_black_ == true);
+
+    assert(f.__parent_ == &d);
+    assert(f.__left_ == &e);
+    assert(f.__right_ == &g);
+    assert(f.__is_black_ == false);
+
+    assert(e.__parent_ == &f);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == true);
+
+    assert(g.__parent_ == &f);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &c);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &f);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(f.__parent_ == &root);
+    assert(f.__left_ == &d);
+    assert(f.__right_ == &g);
+    assert(f.__is_black_ == true);
+
+    assert(d.__parent_ == &f);
+    assert(d.__left_ == 0);
+    assert(d.__right_ == &e);
+    assert(d.__is_black_ == true);
+
+    assert(g.__parent_ == &f);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(e.__parent_ == &d);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == false);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &d);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &f);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(f.__parent_ == &root);
+    assert(f.__left_ == &e);
+    assert(f.__right_ == &g);
+    assert(f.__is_black_ == true);
+
+    assert(e.__parent_ == &f);
+    assert(e.__left_ == 0);
+    assert(e.__right_ == 0);
+    assert(e.__is_black_ == true);
+
+    assert(g.__parent_ == &f);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &e);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == &f);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(f.__parent_ == &g);
+    assert(f.__left_ == 0);
+    assert(f.__right_ == 0);
+    assert(f.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    std::__tree_remove(root.__left_, &f);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &g);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(g.__parent_ == &root);
+    assert(g.__left_ == 0);
+    assert(g.__right_ == &h);
+    assert(g.__is_black_ == true);
+
+    assert(h.__parent_ == &g);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == false);
+
+    std::__tree_remove(root.__left_, &g);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &h);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+
+    assert(h.__parent_ == &root);
+    assert(h.__left_ == 0);
+    assert(h.__right_ == 0);
+    assert(h.__is_black_ == true);
+
+    std::__tree_remove(root.__left_, &h);
+
+    assert(std::__tree_invariant(root.__left_));
+
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == 0);
+    assert(root.__right_ == 0);
+    assert(root.__is_black_ == false);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_right_rotate.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_right_rotate.pass.cpp
new file mode 100644
index 0000000..04d2b09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/associative/tree_right_rotate.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Not a portable test
+
+// Precondition:  __x->__left_ != nullptr
+// template <class _NodePtr>
+// void
+// __tree_right_rotate(_NodePtr __x);
+
+#include <__tree>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Node
+{
+    Node* __left_;
+    Node* __right_;
+    Node* __parent_;
+
+    Node* __parent_unsafe() const { return __parent_; }
+    void __set_parent(Node* x) { __parent_ = x;}
+
+    Node() : __left_(), __right_(), __parent_() {}
+};
+
+void
+test1()
+{
+    Node root;
+    Node x;
+    Node y;
+    root.__left_ = &x;
+    x.__left_ = &y;
+    x.__right_ = 0;
+    x.__parent_ = &root;
+    y.__left_ = 0;
+    y.__right_ = 0;
+    y.__parent_ = &x;
+    std::__tree_right_rotate(&x);
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &y);
+    assert(root.__right_ == 0);
+    assert(y.__parent_ == &root);
+    assert(y.__left_ == 0);
+    assert(y.__right_ == &x);
+    assert(x.__parent_ == &y);
+    assert(x.__left_ == 0);
+    assert(x.__right_ == 0);
+}
+
+void
+test2()
+{
+    Node root;
+    Node x;
+    Node y;
+    Node a;
+    Node b;
+    Node c;
+    root.__left_ = &x;
+    x.__left_ = &y;
+    x.__right_ = &c;
+    x.__parent_ = &root;
+    y.__left_ = &a;
+    y.__right_ = &b;
+    y.__parent_ = &x;
+    a.__parent_ = &y;
+    b.__parent_ = &y;
+    c.__parent_ = &x;
+    std::__tree_right_rotate(&x);
+    assert(root.__parent_ == 0);
+    assert(root.__left_ == &y);
+    assert(root.__right_ == 0);
+    assert(y.__parent_ == &root);
+    assert(y.__left_ == &a);
+    assert(y.__right_ == &x);
+    assert(x.__parent_ == &y);
+    assert(x.__left_ == &b);
+    assert(x.__right_ == &c);
+    assert(a.__parent_ == &y);
+    assert(a.__left_ == 0);
+    assert(a.__right_ == 0);
+    assert(b.__parent_ == &x);
+    assert(b.__left_ == 0);
+    assert(b.__right_ == 0);
+    assert(c.__parent_ == &x);
+    assert(c.__left_ == 0);
+    assert(c.__right_ == 0);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/container.adaptors/queue/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/container.adaptors/queue/version.pass.cpp
new file mode 100644
index 0000000..6856262
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/container.adaptors/queue/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+#include <queue>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/container.adaptors/stack/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/container.adaptors/stack/version.pass.cpp
new file mode 100644
index 0000000..9ee45bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/container.adaptors/stack/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+#include <stack>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_map.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_map.pass.cpp
new file mode 100644
index 0000000..c175356
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_map.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#   undef __DEPRECATED
+#endif
+
+#include <ext/hash_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+void test_default_does_not_allocate() {
+  DisableAllocationGuard g;
+  ((void)g);
+  {
+    __gnu_cxx::hash_map<int, int> h;
+    assert(h.bucket_count() == 0);
+  }
+  {
+    __gnu_cxx::hash_multimap<int, int> h;
+    assert(h.bucket_count() == 0);
+  }
+}
+
+int main(int, char**) {
+  test_default_does_not_allocate();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_map_name_lookup.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_map_name_lookup.pass.cpp
new file mode 100644
index 0000000..02d8471
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_map_name_lookup.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+
+// Poison the std:: names we might use inside __gnu_cxx to ensure they're
+// properly qualified.
+struct allocator;
+struct pair;
+struct equal_to;
+struct unique_ptr;
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#   undef __DEPRECATED
+#endif
+
+#include <ext/hash_map>
+
+#include "test_macros.h"
+
+
+namespace __gnu_cxx {
+template class hash_map<int, int>;
+}
+
+int main(int, char**) {
+  typedef __gnu_cxx::hash_map<int, int> Map;
+  Map m;
+  Map m2(m);
+  ((void)m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_set.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_set.pass.cpp
new file mode 100644
index 0000000..3f7698c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_set.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+
+// Prevent <ext/hash_set> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#   undef __DEPRECATED
+#endif
+
+#include <ext/hash_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+void test_default_does_not_allocate() {
+  DisableAllocationGuard g;
+  ((void)g);
+  {
+    __gnu_cxx::hash_set<int> h;
+    assert(h.bucket_count() == 0);
+  }
+  {
+    __gnu_cxx::hash_multiset<int> h;
+    assert(h.bucket_count() == 0);
+  }
+}
+
+int main(int, char**) {
+  test_default_does_not_allocate();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_set_name_lookup.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_set_name_lookup.pass.cpp
new file mode 100644
index 0000000..b215e6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/gnu_cxx/hash_set_name_lookup.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+
+// Poison the std:: names we might use inside __gnu_cxx to ensure they're
+// properly qualified.
+struct allocator;
+struct pair;
+struct equal_to;
+struct unique_ptr;
+
+// Prevent <ext/hash_set> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#   undef __DEPRECATED
+#endif
+
+#include <ext/hash_set>
+
+#include "test_macros.h"
+
+namespace __gnu_cxx {
+template class hash_set<int>;
+}
+
+int main(int, char**) {
+  typedef __gnu_cxx::hash_set<int> Set;
+  Set s;
+  Set s2(s);
+  ((void)s2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.back.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.back.pass.cpp
new file mode 100644
index 0000000..5fd6204
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.back.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// test that array<T, 0>::back() triggers an assertion
+
+#include <array>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  {
+    typedef std::array<int, 0> C;
+    C c = {};
+    C const& cc = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.back(), "cannot call array<T, 0>::back() on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc.back(), "cannot call array<T, 0>::back() on a zero-sized array");
+  }
+  {
+    typedef std::array<const int, 0> C;
+    C c = {{}};
+    C const& cc = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.back(), "cannot call array<T, 0>::back() on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc.back(), "cannot call array<T, 0>::back() on a zero-sized array");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.front.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.front.pass.cpp
new file mode 100644
index 0000000..4952713
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.front.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// test that array<T, 0>::back() triggers an assertion
+
+#include <array>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  {
+    typedef std::array<int, 0> C;
+    C c = {};
+    C const& cc = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.front(), "cannot call array<T, 0>::front() on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc.front(), "cannot call array<T, 0>::front() on a zero-sized array");
+  }
+  {
+    typedef std::array<const int, 0> C;
+    C c = {{}};
+    C const& cc = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.front(), "cannot call array<T, 0>::front() on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc.front(), "cannot call array<T, 0>::front() on a zero-sized array");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.subscript.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.subscript.pass.cpp
new file mode 100644
index 0000000..1bd7582
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/array.zero/assert.subscript.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// test that array<T, 0>::operator[] triggers an assertion
+
+#include <array>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  {
+    typedef std::array<int, 0> C;
+    C c = {};
+    C const& cc = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c[0], "cannot call array<T, 0>::operator[] on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(c[1], "cannot call array<T, 0>::operator[] on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc[0], "cannot call array<T, 0>::operator[] on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc[1], "cannot call array<T, 0>::operator[] on a zero-sized array");
+  }
+  {
+    typedef std::array<const int, 0> C;
+    C c = {{}};
+    C const& cc = c;
+    TEST_LIBCPP_ASSERT_FAILURE(c[0], "cannot call array<T, 0>::operator[] on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(c[1], "cannot call array<T, 0>::operator[] on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc[0], "cannot call array<T, 0>::operator[] on a zero-sized array");
+    TEST_LIBCPP_ASSERT_FAILURE(cc[1], "cannot call array<T, 0>::operator[] on a zero-sized array");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/triviality.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/triviality.pass.cpp
new file mode 100644
index 0000000..d124e84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/triviality.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure std::array<T, N> is trivially copyable whenever T is trivially copyable.
+// This is not technically mandated by the Standard, but libc++ has been providing
+// this property.
+
+#include <array>
+#include <type_traits>
+
+
+struct Empty { };
+
+struct TrivialCopy {
+    int i;
+    double j;
+};
+
+struct NonTrivialCopy {
+    NonTrivialCopy(NonTrivialCopy const&) { }
+    NonTrivialCopy& operator=(NonTrivialCopy const&) { return *this; }
+};
+
+template <typename T>
+void check_trivially_copyable()
+{
+    static_assert(std::is_trivially_copyable<std::array<T, 0> >::value, "");
+    static_assert(std::is_trivially_copyable<std::array<T, 1> >::value, "");
+    static_assert(std::is_trivially_copyable<std::array<T, 2> >::value, "");
+    static_assert(std::is_trivially_copyable<std::array<T, 3> >::value, "");
+}
+
+int main(int, char**)
+{
+    check_trivially_copyable<int>();
+    check_trivially_copyable<long>();
+    check_trivially_copyable<double>();
+    check_trivially_copyable<long double>();
+    check_trivially_copyable<Empty>();
+    check_trivially_copyable<TrivialCopy>();
+
+    // Check that std::array<T, 0> is still trivially copyable when T is not
+    static_assert( std::is_trivially_copyable<std::array<NonTrivialCopy, 0> >::value, "");
+    static_assert(!std::is_trivially_copyable<std::array<NonTrivialCopy, 1> >::value, "");
+    static_assert(!std::is_trivially_copyable<std::array<NonTrivialCopy, 2> >::value, "");
+    static_assert(!std::is_trivially_copyable<std::array<NonTrivialCopy, 3> >::value, "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/version.pass.cpp
new file mode 100644
index 0000000..8cd0a6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/array/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+#include <array>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/assert.pop_back.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/assert.pop_back.empty.pass.cpp
new file mode 100644
index 0000000..9cbe7c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/assert.pop_back.empty.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// pop_back() more than the number of elements in a deque
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <deque>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::deque<int> q;
+    q.push_back(0);
+    q.pop_back();
+    TEST_LIBCPP_ASSERT_FAILURE(q.pop_back(), "deque::pop_back called on an empty deque");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/incomplete.pass.cpp
new file mode 100644
index 0000000..004a7c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/incomplete.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque()
+// deque::iterator()
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {
+  std::deque<A> d;
+  std::deque<A>::iterator it;
+  std::deque<A>::reverse_iterator it2;
+};
+
+int main(int, char**)
+{
+  A a;
+  assert(a.d.size() == 0);
+  a.it = a.d.begin();
+  a.it2 = a.d.rend();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/spare_block_handling.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/spare_block_handling.pass.cpp
new file mode 100644
index 0000000..3b90464
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/spare_block_handling.pass.cpp
@@ -0,0 +1,282 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// Test how deque manages the spare blocks it keeps. The exact values it tests
+// for are not always important, but are sometimes needed to ensure the container
+// resizes or shrinks at the correct time.
+
+#include <deque>
+#include <cstdio>
+#include <memory>
+#include <queue>
+#include <stack>
+
+#include "min_allocator.h"
+#include "rapid-cxx-test.h"
+
+template <class Adaptor>
+struct ContainerAdaptor : public Adaptor {
+  using Adaptor::Adaptor;
+  typename Adaptor::container_type& GetContainer() { return Adaptor::c; }
+};
+
+template <class Deque>
+static void print(const Deque& d) {
+  std::printf("%zu : __front_spare() == %zu"
+              " : __back_spare() == %zu"
+              " : __capacity() == %zu"
+              " : bytes allocated == %zu\n",
+              d.size(), d.__front_spare(), d.__back_spare(), d.__capacity(),
+              malloc_allocator_base::outstanding_bytes);
+}
+
+template <class T>
+using Deque = std::deque<T, malloc_allocator<T> >;
+
+template <class T>
+using BlockSize = std::__deque_block_size<T, std::ptrdiff_t>;
+
+struct LargeT {
+  LargeT() = default;
+  char buff[256] = {};
+};
+static_assert(BlockSize<LargeT>::value == 16, "");
+
+const auto& AllocBytes = malloc_allocator_base::outstanding_bytes;
+
+template <class Deque>
+struct PrintOnFailure {
+   explicit PrintOnFailure(Deque const& deque) : deque_(&deque) {}
+
+  ~PrintOnFailure() {
+    if (::rapid_cxx_test::get_reporter().current_failure().type
+        != ::rapid_cxx_test::failure_type::none) {
+      print(*deque_);
+    }
+  }
+private:
+  const Deque* deque_;
+
+  PrintOnFailure(PrintOnFailure const&) = delete;
+};
+
+TEST_SUITE(deque_spare_tests)
+
+TEST_CASE(push_back) {
+  const auto BS = BlockSize<LargeT>::value;
+  std::unique_ptr<Deque<LargeT>> dp(new Deque<LargeT>);
+  auto& d = *dp;
+  PrintOnFailure<Deque<LargeT>> on_fail(d);
+
+  // Test nothing is allocated after default construction.
+  {
+    TEST_REQUIRE(d.size() == 0);
+    TEST_REQUIRE(d.__capacity() == 0);
+    TEST_REQUIRE(d.__block_count() == 0);
+  }
+  // First push back allocates one block.
+  d.push_back({});
+  {
+    TEST_REQUIRE(d.size() == 1);
+    TEST_REQUIRE(d.__front_spare() == 0);
+    TEST_REQUIRE(d.__back_spare() == 14);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+    TEST_REQUIRE(d.__capacity() == BS - 1);
+    TEST_REQUIRE(d.__block_count() == 1);
+  }
+
+  d.push_back({});
+  {
+    TEST_REQUIRE(d.size() == 2);
+    TEST_REQUIRE(d.__front_spare() == 0);
+    TEST_REQUIRE(d.__back_spare() == 13);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+  }
+  // Push back until we need a new block.
+  for (int RemainingCap = d.__capacity() - d.size(); RemainingCap >= 0; --RemainingCap)
+    d.push_back({});
+  {
+    TEST_REQUIRE(d.__block_count() == 2);
+    TEST_REQUIRE(d.__front_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare() == 15);
+  }
+
+  // Remove the only element in the new block. Test that we keep the empty
+  // block as a spare.
+  d.pop_back();
+  {
+    TEST_REQUIRE(d.__block_count() == 2);
+    TEST_REQUIRE(d.__front_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare_blocks() == 1);
+    TEST_REQUIRE(d.__back_spare() == 16);
+  }
+
+  // Pop back again, keep the spare.
+  d.pop_back();
+  {
+    TEST_REQUIRE(d.__block_count() == 2);
+    TEST_REQUIRE(d.__front_spare() == 0);
+    TEST_REQUIRE(d.__back_spare() == 17);
+    TEST_REQUIRE(d.__back_spare_blocks() == 1);
+  }
+
+  dp.reset();
+  TEST_REQUIRE(AllocBytes == 0);
+}
+
+TEST_CASE(push_front) {
+  std::unique_ptr<Deque<LargeT>> dp(new Deque<LargeT>);
+  auto& d = *dp;
+  PrintOnFailure<Deque<LargeT>> on_fail(d);
+
+  // Test nothing is allocated after default construction.
+  {
+    TEST_REQUIRE(d.size() == 0);
+    TEST_REQUIRE(d.__capacity() == 0);
+    TEST_REQUIRE(d.__block_count() == 0);
+  }
+  // First push front allocates one block, and we start the sequence in the
+  // middle.
+  d.push_front({});
+  {
+    TEST_REQUIRE(d.size() == 1);
+    TEST_REQUIRE(d.__front_spare() == 7);
+    TEST_REQUIRE(d.__back_spare() == 7);
+    TEST_REQUIRE(d.__front_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+    TEST_REQUIRE(d.__block_count() == 1);
+  }
+
+  d.push_front({});
+  {
+    TEST_REQUIRE(d.size() == 2);
+    TEST_REQUIRE(d.__front_spare() == 6);
+    TEST_REQUIRE(d.__back_spare() == 7);
+    TEST_REQUIRE(d.__front_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+  }
+  // Push front until we need a new block.
+  for (int RemainingCap = d.__front_spare(); RemainingCap >= 0; --RemainingCap)
+    d.push_front({});
+  {
+    TEST_REQUIRE(d.__block_count() == 2);
+    TEST_REQUIRE(d.__front_spare() == 15);
+    TEST_REQUIRE(d.__back_spare() == 7);
+    TEST_REQUIRE(d.__front_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+  }
+
+  // Remove the only element in the new block. Test that we keep the empty
+  // block as a spare.
+  d.pop_front();
+  {
+    TEST_REQUIRE(d.__block_count() == 2);
+    TEST_REQUIRE(d.__front_spare_blocks() == 1);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+    TEST_REQUIRE(d.__back_spare() == 7);
+  }
+
+  // Pop back again, keep the spare.
+  d.pop_front();
+  {
+    TEST_REQUIRE(d.__block_count() == 2);
+    TEST_REQUIRE(d.__front_spare_blocks() == 1);
+    TEST_REQUIRE(d.__back_spare() == 7);
+  }
+
+  dp.reset();
+  TEST_REQUIRE(AllocBytes == 0);
+}
+
+TEST_CASE(std_queue) {
+  using D = Deque<LargeT>;
+  using Queue = std::queue<LargeT, D>;
+  ContainerAdaptor<Queue> CA;
+  const D& d = CA.GetContainer();
+  Queue &q = CA;
+  PrintOnFailure<Deque<LargeT>> on_fail(d);
+
+  while (d.__block_count() < 4)
+    q.push({});
+  {
+    TEST_REQUIRE(d.__block_count() == 4);
+    TEST_REQUIRE(d.__front_spare() == 0);
+    TEST_REQUIRE(d.__back_spare() == 15);
+    TEST_REQUIRE(d.__back_spare_blocks() == 0);
+  }
+  while (d.__back_spare()) {
+    q.push({});
+  }
+  {
+    TEST_REQUIRE(d.__block_count() == 4);
+    TEST_REQUIRE(d.__front_spare() == 0);
+    TEST_REQUIRE(d.__back_spare() == 0);
+  }
+  q.pop();
+  {
+    TEST_REQUIRE(d.__block_count() == 4);
+    TEST_REQUIRE(d.__front_spare() == 1);
+    TEST_REQUIRE(d.__back_spare() == 0);
+  }
+
+  // Pop until we create a spare block at the front.
+  while (d.__front_spare() <= 15)
+    q.pop();
+
+  {
+    TEST_REQUIRE(d.__block_count() == 4);
+    TEST_REQUIRE(d.__front_spare_blocks() == 1);
+    TEST_REQUIRE(d.__front_spare() == 16);
+    TEST_REQUIRE(d.__back_spare() == 0);
+  }
+
+  // Push at the end -- should re-use new spare block at front
+  q.push({});
+
+  {
+    TEST_REQUIRE(d.__block_count() == 4);
+    TEST_REQUIRE(d.__front_spare_blocks() == 0);
+    TEST_REQUIRE(d.__front_spare() == 0);
+    TEST_REQUIRE(d.__back_spare() == 15);
+  }
+  while (!q.empty()) {
+    q.pop();
+    TEST_REQUIRE(d.__front_spare_blocks() + d.__back_spare_blocks() <= 2);
+  }
+
+  // The empty state has two blocks
+  {
+    TEST_REQUIRE(d.__front_spare() == 16);
+    TEST_REQUIRE(d.__back_spare() == 15);
+    TEST_REQUIRE(d.__capacity() == 31);
+  }
+}
+
+TEST_CASE(pop_front_push_back) {
+  Deque<char> d(32 * 1024, 'a');
+  bool take_from_front = true;
+  while (d.size() > 0) {
+    if (take_from_front) {
+      d.pop_front();
+      take_from_front = false;
+    } else {
+      d.pop_back();
+      take_from_front = true;
+    }
+    if (d.size() % 1000 == 0 || d.size() < 50) {
+      print(d);
+    }
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/version.pass.cpp
new file mode 100644
index 0000000..c55d5b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/deque/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+#include <deque>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/forwardlist/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/forwardlist/version.pass.cpp
new file mode 100644
index 0000000..94023ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/forwardlist/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+#include <forward_list>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.cons/debug.copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.cons/debug.copy.pass.cpp
new file mode 100644
index 0000000..d444204
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.cons/debug.copy.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list(list&& c);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::list<int> l1;
+    l1.push_back(1); l1.push_back(2); l1.push_back(3);
+    std::list<int>::iterator i = l1.begin();
+    std::list<int> l2 = l1;
+    TEST_LIBCPP_ASSERT_FAILURE(l2.erase(i), "list::erase(iterator) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/assert.erase_iter.end.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/assert.erase_iter.end.pass.cpp
new file mode 100644
index 0000000..4d02547
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/assert.erase_iter.end.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// Call erase(const_iterator position) with end()
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    int a1[] = {1, 2, 3};
+    std::list<int> l1(a1, a1+3);
+    std::list<int>::const_iterator i = l1.end();
+    TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i), "list::erase(iterator) called with a non-dereferenceable iterator");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/assert.pop_back.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/assert.pop_back.empty.pass.cpp
new file mode 100644
index 0000000..1a823b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/assert.pop_back.empty.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void pop_back();
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <list>
+#include <cassert>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    int a[] = {1, 2, 3};
+    std::list<int> c(a, a+3);
+    c.pop_back();
+    assert(c == std::list<int>(a, a+2));
+    c.pop_back();
+    assert(c == std::list<int>(a, a+1));
+    c.pop_back();
+    assert(c.empty());
+    TEST_LIBCPP_ASSERT_FAILURE(c.pop_back(), "list::pop_back() called on an empty list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.emplace.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.emplace.pass.cpp
new file mode 100644
index 0000000..ce1eb67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.emplace.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class... Args> void emplace(const_iterator p, Args&&... args);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+struct A {
+  explicit A(int i, double d) {
+    (void)i;
+    (void)d;
+  }
+};
+
+int main(int, char**) {
+    std::list<A> c1;
+    std::list<A> c2;
+    TEST_LIBCPP_ASSERT_FAILURE(c1.emplace(c2.cbegin(), 2, 3.5),
+                               "list::emplace(iterator, args...) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.erase.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.erase.iter.pass.cpp
new file mode 100644
index 0000000..f389ef4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.erase.iter.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// Call erase(const_iterator position) with iterator from another container
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    int a1[] = {1, 2, 3};
+    std::list<int> l1(a1, a1+3);
+    std::list<int> l2(a1, a1+3);
+    std::list<int>::const_iterator i = l2.begin();
+    TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i), "list::erase(iterator) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.erase.iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.erase.iter_iter.pass.cpp
new file mode 100644
index 0000000..78b8b09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.erase.iter_iter.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// Call erase(const_iterator first, const_iterator last); with various invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // First iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l2.cbegin(), std::next(l1.cbegin())),
+                                "list::erase(iterator, iterator) called with an iterator not referring to this list");
+    }
+
+    // Second iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l1.cbegin(), std::next(l2.cbegin())),
+                                "list::erase(iterator, iterator) called with an iterator not referring to this list");
+    }
+
+    // Both iterators from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l2.cbegin(), std::next(l2.cbegin())),
+                                "list::erase(iterator, iterator) called with an iterator not referring to this list");
+    }
+
+    // With an invalid range
+    {
+        int a1[] = {1, 2, 3};
+        std::list<int> l1(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(std::next(l1.cbegin()), l1.cbegin()),
+                                "Attempted to increment a non-incrementable list::const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..7cf1c5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_iter_iter.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <InputIterator Iter>
+//   iterator insert(const_iterator position, Iter first, Iter last);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::list<int> v(100);
+    std::list<int> v2(100);
+    int a[] = {1, 2, 3, 4, 5};
+    TEST_LIBCPP_ASSERT_FAILURE(v.insert(v2.cbegin(), a, a + 5),
+                                "list::insert(iterator, range) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_rvalue.pass.cpp
new file mode 100644
index 0000000..71ba4e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_rvalue.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, value_type&& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::list<int> v1(3);
+    std::list<int> v2(3);
+    TEST_LIBCPP_ASSERT_FAILURE(v1.insert(v2.begin(), 4),
+                               "list::insert(iterator, x) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_size_value.pass.cpp
new file mode 100644
index 0000000..e3907fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_size_value.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, size_type n, const value_type& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::list<int> c1(100);
+    std::list<int> c2;
+    TEST_LIBCPP_ASSERT_FAILURE(c1.insert(c2.cbegin(), 5, 1),
+                               "list::insert(iterator, n, x) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_value.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_value.pass.cpp
new file mode 100644
index 0000000..ce260c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.modifiers/debug.insert.iter_value.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, const value_type& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::list<int> v1(3);
+    std::list<int> v2(3);
+    int i = 4;
+    TEST_LIBCPP_ASSERT_FAILURE(v1.insert(v2.begin(), i),
+                               "list::insert(iterator, x) called with an iterator not referring to this list");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list.pass.cpp
new file mode 100644
index 0000000..6d3fb65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::list<int> v1(3);
+  std::list<int> v2(3);
+  TEST_LIBCPP_ASSERT_FAILURE(v1.splice(v2.begin(), v2),
+                              "list::splice(iterator, list) called with an iterator not referring to this list");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list_iter.pass.cpp
new file mode 100644
index 0000000..6ac7a69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list_iter.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list<T,Allocator>& x, iterator i);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::list<int> v1(3);
+    std::list<int> v2(3);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        v1.splice(v1.begin(), v2, v1.begin()),
+        "list::splice(iterator, list, iterator) called with the second iterator not referring to the list argument");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list_iter_iter.pass.cpp
new file mode 100644
index 0000000..ec318f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/list.ops/debug.splice.pos_list_iter_iter.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list& x, iterator first, iterator last);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <list>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::list<int> v1(3);
+  std::list<int> v2(3);
+  TEST_LIBCPP_ASSERT_FAILURE(
+      v1.splice(v1.begin(), v2, v2.begin(), v1.end()),
+      "list::splice(iterator, list, iterator, iterator) called with third iterator not referring to the list argument");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/version.pass.cpp
new file mode 100644
index 0000000..8137ca7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/list/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+#include <list>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector.bool/trivial_for_purposes_of_call.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector.bool/trivial_for_purposes_of_call.pass.cpp
new file mode 100644
index 0000000..d9d698f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector.bool/trivial_for_purposes_of_call.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// typedef ... iterator;
+// typedef ... const_iterator;
+
+// The libc++ __bit_iterator type has weird ABI calling conventions as a quirk
+// of the implementation. The const bit iterator is trivial, but the non-const
+// bit iterator is not because it declares a user-defined copy constructor.
+//
+// Changing this now is an ABI break, so this test ensures that each type
+// is trivial/non-trivial as expected.
+
+// The definition of 'non-trivial for the purposes of calls':
+//   A type is considered non-trivial for the purposes of calls if:
+//     * it has a non-trivial copy constructor, move constructor, or
+//       destructor, or
+//     * all of its copy and move constructors are deleted.
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+using IsTrivialForCall = std::integral_constant<bool,
+  std::is_trivially_copy_constructible<T>::value &&
+  std::is_trivially_move_constructible<T>::value &&
+  std::is_trivially_destructible<T>::value
+  // Ignore the all-deleted case, it shouldn't occur here.
+  >;
+
+void test_const_iterator() {
+  using It = std::vector<bool>::const_iterator;
+  static_assert(IsTrivialForCall<It>::value, "");
+}
+
+void test_non_const_iterator() {
+  using It = std::vector<bool>::iterator;
+  static_assert(!IsTrivialForCall<It>::value, "");
+}
+
+int main(int, char**) {
+  test_const_iterator();
+  test_non_const_iterator();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/asan.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/asan.pass.cpp
new file mode 100644
index 0000000..40275f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/asan.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: asan
+
+// <vector>
+
+// reference operator[](size_type n);
+
+#include <vector>
+#include <cassert>
+#include <cstdlib>
+
+#include "asan_testing.h"
+#include "min_allocator.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+extern "C" void __sanitizer_set_death_callback(void (*callback)(void));
+
+void do_exit() {
+  exit(0);
+}
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::vector<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        c.reserve(2*c.size());
+        volatile T foo = c[c.size()];    // bad, but not caught by ASAN
+        ((void)foo);
+    }
+#endif
+
+    {
+        typedef cpp17_input_iterator<int*> MyInputIter;
+        // Sould not trigger ASan.
+        std::vector<int> v;
+        v.reserve(1);
+        int i[] = {42};
+        v.insert(v.begin(), MyInputIter(i), MyInputIter(i + 1));
+        assert(v[0] == 42);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+
+    __sanitizer_set_death_callback(do_exit);
+    {
+        typedef int T;
+        typedef std::vector<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        c.reserve(2*c.size());
+        assert(is_contiguous_container_asan_correct(c));
+        assert(!__sanitizer_verify_contiguous_container( c.data(), c.data() + 1, c.data() + c.capacity()));
+        volatile T foo = c[c.size()]; // should trigger ASAN. Use volatile to prevent being optimized away.
+        assert(false);          // if we got here, ASAN didn't trigger
+        ((void)foo);
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/asan_throw.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/asan_throw.pass.cpp
new file mode 100644
index 0000000..6a267e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/asan_throw.pass.cpp
@@ -0,0 +1,236 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// Test asan vector annotations with a class that throws in a CTOR.
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "asan_testing.h"
+
+class X {
+public:
+  X(const X &x) { Init(x.a); }
+  X(char arg) { Init(arg); }
+  X() { Init(42); }
+  X &operator=(const X &x) {
+    Init(x.a);
+    return *this;
+  }
+  void Init(char arg) {
+    if (arg == 42)
+      throw 0;
+    if (arg == 66)
+      arg = 42;
+    a = arg;
+  }
+  char get() const { return a; }
+  void set(char arg) { a = arg; }
+
+private:
+  char a;
+};
+
+class ThrowOnCopy {
+public:
+    ThrowOnCopy() : should_throw(false) {}
+    explicit ThrowOnCopy(bool xshould_throw) : should_throw(xshould_throw) {}
+
+    ThrowOnCopy(ThrowOnCopy const & other)
+        : should_throw(other.should_throw)
+    {
+        if (should_throw) {
+            throw 0;
+        }
+    }
+    ThrowOnCopy& operator=(ThrowOnCopy const&) = default;
+
+    bool should_throw;
+};
+
+void test_push_back() {
+  std::vector<X> v;
+  v.reserve(2);
+  v.push_back(X(2));
+  assert(v.size() == 1);
+  try {
+    v.push_back(X(66));
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 1);
+  }
+  assert(v.size() == 1);
+  assert(is_contiguous_container_asan_correct(v));
+}
+
+void test_emplace_back() {
+#if TEST_STD_VER >= 11
+  std::vector<X> v;
+  v.reserve(2);
+  v.push_back(X(2));
+  assert(v.size() == 1);
+  try {
+    v.emplace_back(42);
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 1);
+  }
+  assert(v.size() == 1);
+  assert(is_contiguous_container_asan_correct(v));
+#endif
+}
+
+void test_insert_range() {
+  std::vector<X> v;
+  v.reserve(4);
+  v.push_back(X(1));
+  v.push_back(X(2));
+  assert(v.size() == 2);
+  assert(v.capacity() >= 4);
+  try {
+    char a[2] = {21, 42};
+    v.insert(v.end(), a, a + 2);
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 2);
+  }
+  assert(v.size() == 2);
+  assert(is_contiguous_container_asan_correct(v));
+}
+
+void test_insert() {
+  std::vector<X> v;
+  v.reserve(3);
+  v.insert(v.end(), X(1));
+  v.insert(v.begin(), X(2));
+  assert(v.size() == 2);
+  try {
+    v.insert(v.end(), X(66));
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 2);
+  }
+  assert(v.size() == 2);
+  assert(is_contiguous_container_asan_correct(v));
+}
+
+void test_emplace() {
+#if TEST_STD_VER >= 11
+  std::vector<X> v;
+  v.reserve(3);
+  v.insert(v.end(), X(1));
+  v.insert(v.begin(), X(2));
+  assert(v.size() == 2);
+  try {
+    v.emplace(v.end(), 42);
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 2);
+  }
+  assert(v.size() == 2);
+  assert(is_contiguous_container_asan_correct(v));
+#endif
+}
+
+void test_insert_range2() {
+  std::vector<X> v;
+  v.reserve(4);
+  v.insert(v.end(), X(1));
+  v.insert(v.begin(), X(2));
+  assert(v.size() == 2);
+  assert(v.capacity() >= 4);
+  try {
+    char a[2] = {10, 42};
+    v.insert(v.begin(), a, a + 2);
+    assert(0);
+  } catch (int e) {
+    assert(v.size() <= 4);
+    assert(is_contiguous_container_asan_correct(v));
+    return;
+  }
+  assert(0);
+}
+
+void test_insert_n() {
+  std::vector<X> v;
+  v.reserve(10);
+  v.insert(v.end(), X(1));
+  v.insert(v.begin(), X(2));
+  assert(v.size() == 2);
+  try {
+    v.insert(v.begin(), 1, X(66));
+    assert(0);
+  } catch (int e) {
+    assert(v.size() <= 3);
+    assert(is_contiguous_container_asan_correct(v));
+    return;
+  }
+  assert(0);
+}
+
+
+void test_insert_n2() {
+  std::vector<ThrowOnCopy> v(10);
+  v.reserve(100);
+  assert(v.size() == 10);
+  v[6].should_throw = true;
+  try {
+    v.insert(v.cbegin(), 5, ThrowOnCopy());
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 11);
+    assert(is_contiguous_container_asan_correct(v));
+    return;
+  }
+  assert(0);
+}
+
+void test_resize() {
+  std::vector<X> v;
+  v.reserve(3);
+  v.push_back(X(0));
+  try {
+    v.resize(3);
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 1);
+  }
+  assert(v.size() == 1);
+  assert(is_contiguous_container_asan_correct(v));
+}
+
+void test_resize_param() {
+  std::vector<X> v;
+  v.reserve(3);
+  v.push_back(X(0));
+  try {
+    v.resize(3, X(66));
+    assert(0);
+  } catch (int e) {
+    assert(v.size() == 1);
+  }
+  assert(v.size() == 1);
+  assert(is_contiguous_container_asan_correct(v));
+}
+
+int main(int, char**) {
+  test_push_back();
+  test_emplace_back();
+  test_insert_range();
+  test_insert();
+  test_emplace();
+  test_insert_range2();
+  test_insert_n();
+  test_insert_n2();
+  test_resize();
+  test_resize_param();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.back.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.back.empty.pass.cpp
new file mode 100644
index 0000000..b2956a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.back.empty.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Call back() on empty container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    assert(c.back() == 0);
+    c.clear();
+    TEST_LIBCPP_ASSERT_FAILURE(c.back(), "back() called on an empty vector");
+  }
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    assert(c.back() == 0);
+    c.clear();
+    TEST_LIBCPP_ASSERT_FAILURE(c.back(), "back() called on an empty vector");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cback.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cback.empty.pass.cpp
new file mode 100644
index 0000000..14c3800
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cback.empty.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Call back() on empty const container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    const C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.back(), "back() called on an empty vector");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    const C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.back(), "back() called on an empty vector");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cfront.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cfront.empty.pass.cpp
new file mode 100644
index 0000000..ee7e36e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cfront.empty.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Call front() on empty const container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    const C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.front(), "front() called on an empty vector");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    const C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.front(), "front() called on an empty vector");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cindex.oob.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cindex.oob.pass.cpp
new file mode 100644
index 0000000..cba6479
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.cindex.oob.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Index const vector out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    const C c(1);
+    assert(c[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(c[1], "vector[] index out of bounds");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    const C c(1);
+    assert(c[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(c[1], "vector[] index out of bounds");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.front.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.front.empty.pass.cpp
new file mode 100644
index 0000000..95a8160
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.front.empty.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Call front() on empty container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    assert(c.front() == 0);
+    c.clear();
+    TEST_LIBCPP_ASSERT_FAILURE(c.front(), "front() called on an empty vector");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    assert(c.front() == 0);
+    c.clear();
+    TEST_LIBCPP_ASSERT_FAILURE(c.front(), "front() called on an empty vector");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.index.oob.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.index.oob.pass.cpp
new file mode 100644
index 0000000..3192768
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.index.oob.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Index vector out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    assert(c[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(c[1], "vector[] index out of bounds");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    assert(c[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(c[1], "vector[] index out of bounds");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.pop_back.empty.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.pop_back.empty.pass.cpp
new file mode 100644
index 0000000..8d4099f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/assert.pop_back.empty.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// pop_back() more than the number of elements in a vector
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <vector>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::vector<int> v;
+    v.push_back(0);
+    v.pop_back();
+    TEST_LIBCPP_ASSERT_FAILURE(v.pop_back(), "vector::pop_back called on an empty vector");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/const_value_type.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/const_value_type.pass.cpp
new file mode 100644
index 0000000..1ad505a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/const_value_type.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector<const int> v;  // an extension
+
+#include <vector>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::vector<const int> v = {1, 2, 3};
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.add.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.add.pass.cpp
new file mode 100644
index 0000000..9e80a7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.add.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Add to iterator out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    C::iterator i = c.begin();
+    i += 1;
+    assert(i == c.end());
+    i = c.begin();
+    TEST_LIBCPP_ASSERT_FAILURE(i + 2, "Attempted to add/subtract an iterator outside its valid range");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    C::iterator i = c.begin();
+    i += 1;
+    assert(i == c.end());
+    i = c.begin();
+    TEST_LIBCPP_ASSERT_FAILURE(i + 2, "Attempted to add/subtract an iterator outside its valid range");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.compare.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.compare.pass.cpp
new file mode 100644
index 0000000..669c349
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.compare.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Compare iterators from different containers with <.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c1;
+    C c2;
+    TEST_LIBCPP_ASSERT_FAILURE(c1.begin() < c2.begin(), "Attempted to compare incomparable iterators");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c1;
+    C c2;
+    TEST_LIBCPP_ASSERT_FAILURE(c1.begin() < c2.begin(), "Attempted to compare incomparable iterators");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.decrement.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.decrement.pass.cpp
new file mode 100644
index 0000000..c7f65d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.decrement.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Decrement iterator prior to begin.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    C::iterator i = c.end();
+    --i;
+    assert(i == c.begin());
+    TEST_LIBCPP_ASSERT_FAILURE(--i, "Attempted to decrement a non-decrementable iterator");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    C::iterator i = c.end();
+    --i;
+    assert(i == c.begin());
+    TEST_LIBCPP_ASSERT_FAILURE(--i, "Attempted to decrement a non-decrementable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.dereference.pass.cpp
new file mode 100644
index 0000000..e421e55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.dereference.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    C::iterator i = c.end();
+    TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable iterator");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    C::iterator i = c.end();
+    TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.increment.pass.cpp
new file mode 100644
index 0000000..83dcce1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.increment.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Increment iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    C::iterator i = c.begin();
+    ++i;
+    assert(i == c.end());
+    TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable iterator");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    C::iterator i = c.begin();
+    ++i;
+    assert(i == c.end());
+    TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.index.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.index.pass.cpp
new file mode 100644
index 0000000..ff43d08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.index.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Index iterator out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c(1);
+    C::iterator i = c.begin();
+    assert(i[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(i[1], "Attempted to subscript an iterator outside its valid range");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c(1);
+    C::iterator i = c.begin();
+    assert(i[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(i[1], "Attempted to subscript an iterator outside its valid range");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.subtract.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.subtract.pass.cpp
new file mode 100644
index 0000000..a5b35ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/debug.iterator.subtract.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Subtract iterators from different containers.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <vector>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef int T;
+    typedef std::vector<T> C;
+    C c1;
+    C c2;
+    TEST_LIBCPP_ASSERT_FAILURE(c1.begin() - c2.begin(), "Attempted to subtract incompatible iterators");
+  }
+
+  {
+    typedef int T;
+    typedef std::vector<T, min_allocator<T> > C;
+    C c1;
+    C c2;
+    TEST_LIBCPP_ASSERT_FAILURE(c1.begin() - c2.begin(), "Attempted to subtract incompatible iterators");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/exception_safety_exceptions_disabled.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/exception_safety_exceptions_disabled.pass.cpp
new file mode 100644
index 0000000..dc77111
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/exception_safety_exceptions_disabled.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -fno-exceptions
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// Test that vector always moves elements when exceptions are disabled.
+// vector is allowed to move or copy elements while resizing, so long as
+// it still provides the strong exception safety guarantee.
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+#error exceptions should be disabled.
+#endif
+
+bool allow_moves = false;
+
+class A {
+public:
+  A() {}
+  A(A&&) { assert(allow_moves); }
+  explicit A(int) {}
+  A(A const&) { assert(false); }
+};
+
+int main(int, char**) {
+  std::vector<A> v;
+
+  // Create a vector containing some number of elements that will
+  // have to be moved when it is resized.
+  v.reserve(10);
+  size_t old_cap = v.capacity();
+  for (size_t i = 0; i < v.capacity(); ++i) {
+    v.emplace_back(42);
+  }
+  assert(v.capacity() == old_cap);
+  assert(v.size() == v.capacity());
+
+  // The next emplace back should resize.
+  allow_moves = true;
+  v.emplace_back(42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/invalid_allocator.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/invalid_allocator.verify.cpp
new file mode 100644
index 0000000..abd33a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/invalid_allocator.verify.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that vector diagnoses an allocator which has to implement rebind with an appropriate error message
+
+#include <vector>
+
+class FooAllocator {
+ public:
+  using value_type = int;
+  FooAllocator() = default;
+
+  int* allocate(int num_objects);
+
+  void deallocate(int* ptr, int num_objects);
+
+  bool operator==(const FooAllocator&) const { return true; }
+  bool operator!=(const FooAllocator&) const { return false; }
+};
+
+void func() {
+  std::vector<int, FooAllocator> v; //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}This allocator has to implement rebind}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..ed991fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/robust_against_adl.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+#include <cstddef>
+#include <vector>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+template<class T, class AdlTrap = Holder<Incomplete>>
+struct MyAlloc {
+    using value_type = T;
+    MyAlloc() = default;
+    template<class U> MyAlloc(const MyAlloc<U>&) {}
+    T *allocate(std::size_t n) { return std::allocator<T>().allocate(n); }
+    void deallocate(T *p, std::size_t n) { return std::allocator<T>().deallocate(p, n); }
+};
+
+int main(int, char**)
+{
+    std::vector<bool, MyAlloc<bool>> vb;
+    std::vector<bool, MyAlloc<bool>> wb(100);
+
+    std::vector<int, MyAlloc<int>> v;
+    std::vector<int, MyAlloc<int>> w(100);
+    v.push_back(1);
+    v.insert(v.end(), 2);
+    v.insert(v.end(), w.begin(), w.end());
+    v.pop_back();
+    v.erase(v.begin());
+    v.erase(v.begin(), v.end());
+#if TEST_STD_VER >= 14
+    // TODO: vector::swap is not robust against ADL because we compare allocators, and that
+    //       triggers ADL when looking up operator==.
+    // v.swap(w);
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp
new file mode 100644
index 0000000..9e3fb88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class InputIter> vector(InputIter first, InputIter last);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+void test_ctor_under_alloc() {
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    typedef std::vector<int, cpp03_allocator<int> > C;
+    typedef C::allocator_type Alloc;
+    {
+      Alloc::construct_called = false;
+      C v(arr1, arr1 + 1);
+      assert(Alloc::construct_called);
+    }
+    {
+      Alloc::construct_called = false;
+      C v(arr2, arr2 + 3);
+      assert(Alloc::construct_called);
+    }
+  }
+  {
+    typedef std::vector<int, cpp03_overload_allocator<int> > C;
+    typedef C::allocator_type Alloc;
+    {
+      Alloc::construct_called = false;
+      C v(arr1, arr1 + 1);
+      assert(Alloc::construct_called);
+    }
+    {
+      Alloc::construct_called = false;
+      C v(arr2, arr2 + 3);
+      assert(Alloc::construct_called);
+    }
+  }
+}
+
+int main(int, char**) {
+  test_ctor_under_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..fa1bd2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class InputIter> vector(InputIter first, InputIter last,
+//                                   const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+void test_ctor_under_alloc() {
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    typedef std::vector<int, cpp03_allocator<int> > C;
+    typedef C::allocator_type Alloc;
+    Alloc a;
+    {
+      Alloc::construct_called = false;
+      C v(arr1, arr1 + 1, a);
+      assert(Alloc::construct_called);
+    }
+    {
+      Alloc::construct_called = false;
+      C v(arr2, arr2 + 3, a);
+      assert(Alloc::construct_called);
+    }
+  }
+  {
+    typedef std::vector<int, cpp03_overload_allocator<int> > C;
+    typedef C::allocator_type Alloc;
+    Alloc a;
+    {
+      Alloc::construct_called = false;
+      C v(arr1, arr1 + 1, a);
+      assert(Alloc::construct_called);
+    }
+    {
+      Alloc::construct_called = false;
+      C v(arr2, arr2 + 3, a);
+      assert(Alloc::construct_called);
+    }
+  }
+}
+
+int main(int, char**) {
+  test_ctor_under_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/version.pass.cpp
new file mode 100644
index 0000000..ef20070
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/sequences/vector/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+#include <vector>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/key_value_traits.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/key_value_traits.pass.cpp
new file mode 100644
index 0000000..c5e4203
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/key_value_traits.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <__hash_table>
+#include <unordered_map>
+#include <unordered_set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+void testKeyValueTrait() {
+  {
+    typedef int Tp;
+    typedef std::__hash_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, int>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type, Tp>::value), "");
+    static_assert(Traits::__is_map == false, "");
+  }
+  {
+    typedef std::pair<int, int> Tp;
+    typedef std::__hash_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type, Tp>::value), "");
+    static_assert(Traits::__is_map == false, "");
+  }
+  {
+    typedef std::pair<const int, int> Tp;
+    typedef std::__hash_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type, Tp>::value), "");
+    static_assert(Traits::__is_map == false, "");
+  }
+  {
+    typedef std::__hash_value_type<int, int> Tp;
+    typedef std::__hash_key_value_types<Tp> Traits;
+    static_assert((std::is_same<Traits::key_type, int>::value), "");
+    static_assert((std::is_same<Traits::mapped_type, int>::value), "");
+    static_assert((std::is_same<Traits::__node_value_type, Tp>::value), "");
+    static_assert((std::is_same<Traits::__container_value_type,
+                               std::pair<const int, int> >::value), "");
+    static_assert((std::is_same<Traits::__map_value_type,
+                               std::pair<const int, int> >::value), "");
+    static_assert(Traits::__is_map == true, "");
+  }
+}
+
+int main(int, char**) {
+  testKeyValueTrait();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/next_pow2.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/next_pow2.pass.cpp
new file mode 100644
index 0000000..5a29248
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/next_pow2.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+// UNSUPPORTED: c++03
+
+// Not a portable test
+
+// <__hash_table>
+
+// size_t __next_hash_pow2(size_t n);
+
+// If n <= 1, return n. If n is a power of 2, return n.
+// Otherwise, return the next power of 2.
+
+#include <__hash_table>
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+bool
+is_power_of_two(unsigned long n)
+{
+    return __builtin_popcount(n) == 1;
+}
+
+void test_next_pow2_val(size_t n)
+{
+        std::size_t npow2 = std::__next_hash_pow2(n);
+        assert(is_power_of_two(npow2) && npow2 > n);
+}
+
+void
+test_next_pow2()
+{
+    assert(!is_power_of_two(0));
+    assert(is_power_of_two(1));
+    assert(is_power_of_two(2));
+    assert(!is_power_of_two(3));
+
+    assert(std::__next_hash_pow2(0) == 0);
+    assert(std::__next_hash_pow2(1) == 1);
+
+    for (std::size_t n = 2; n < (sizeof(std::size_t) * 8 - 1); ++n)
+    {
+        std::size_t pow2 = 1ULL << n;
+        assert(std::__next_hash_pow2(pow2) == pow2);
+    }
+
+    test_next_pow2_val(3);
+    test_next_pow2_val(7);
+    test_next_pow2_val(9);
+    test_next_pow2_val(15);
+    test_next_pow2_val(127);
+    test_next_pow2_val(129);
+}
+
+// Note: this is only really useful when run with -fsanitize=undefined.
+void
+fuzz_unordered_map_reserve(unsigned num_inserts,
+                           unsigned num_reserve1,
+                           unsigned num_reserve2)
+{
+    std::unordered_map<uint64_t, unsigned long> m;
+    m.reserve(num_reserve1);
+    for (unsigned I = 0; I < num_inserts; ++I) m[I] = 0;
+    m.reserve(num_reserve2);
+    assert(m.bucket_count() >= num_reserve2);
+}
+
+int main(int, char**)
+{
+    test_next_pow2();
+
+    for (unsigned num_inserts = 0; num_inserts <= 64; ++num_inserts)
+        for (unsigned num_reserve1 = 1; num_reserve1 <= 64; ++num_reserve1)
+            for (unsigned num_reserve2 = 1; num_reserve2 <= 64; ++num_reserve2)
+                fuzz_unordered_map_reserve(num_inserts, num_reserve1, num_reserve2);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/next_prime.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/next_prime.pass.cpp
new file mode 100644
index 0000000..642e5fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/next_prime.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// Not a portable test
+
+// <__hash_table>
+
+// size_t __next_prime(size_t n);
+
+// If n == 0, return 0, else return the lowest prime greater than or equal to n
+
+#include <__hash_table>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool
+is_prime(size_t n)
+{
+    switch (n)
+    {
+    case 0:
+    case 1:
+        return false;
+    }
+    for (size_t i = 2; i*i <= n; ++i)
+    {
+        if (n % i == 0)
+            return false;
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    assert(std::__next_prime(0) == 0);
+    for (std::size_t n = 1; n <= 100000; ++n)
+    {
+        std::size_t p = std::__next_prime(n);
+        assert(p >= n);
+        for (std::size_t i = n; i < p; ++i)
+            assert(!is_prime(i));
+        assert(is_prime(p));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/non_const_comparator.incomplete.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/non_const_comparator.incomplete.verify.cpp
new file mode 100644
index 0000000..603b4fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/non_const_comparator.incomplete.verify.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Test that libc++ does not generate a warning diagnostic about the comparator
+// or the hasher too early for containers of incomplete types.
+//
+// See PR41360.
+
+#include <unordered_set>
+#include <unordered_map>
+#include <functional>
+
+#include "test_macros.h"
+
+
+template <template <typename ...> class Container>
+void test_set() {
+  struct KeyBase { };
+  struct KeyDerived;  // derives from KeyBase, but incomplete at this point
+
+  // Name the type but don't instantiate it.
+  using C = Container<KeyDerived*, std::hash<KeyBase*>, std::equal_to<KeyBase*>>;
+
+  // Instantiate it but don't ODR use any members.
+  typename C::value_type dummy; (void)dummy;
+
+  // Complete the types.
+  struct KeyDerived : KeyBase { };
+
+  C c; // ODR use it, which should be OK
+}
+
+template <template <typename ...> class Container>
+void test_map() {
+  struct Value { };
+  struct KeyBase { };
+  struct KeyDerived;
+  using C = Container<KeyDerived*, Value, std::hash<KeyBase*>, std::equal_to<KeyBase*>>;
+  typename C::value_type dummy; (void)dummy;
+  struct KeyDerived : KeyBase { };
+  C c;
+}
+
+int main(int, char**) {
+  // expected-no-diagnostics
+  test_set<std::unordered_set>();
+  test_set<std::unordered_multiset>();
+  test_map<std::unordered_map>();
+  test_map<std::unordered_multimap>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/non_const_comparator.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/non_const_comparator.verify.cpp
new file mode 100644
index 0000000..2a389c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/non_const_comparator.verify.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: diagnose-if-support
+
+// Test that libc++ generates a warning diagnostic when the container is
+// provided a non-const callable comparator or a non-const hasher.
+
+#include <unordered_set>
+#include <unordered_map>
+
+struct BadHash {
+  template <class T>
+  size_t operator()(T const& t) {
+    return std::hash<T>{}(t);
+  }
+};
+
+struct BadEqual {
+  template <class T, class U>
+  bool operator()(T const& t, U const& u) {
+    return t == u;
+  }
+};
+
+int main(int, char**) {
+  static_assert(!std::__invokable<BadEqual const&, int const&, int const&>::value, "");
+  static_assert(std::__invokable<BadEqual&, int const&, int const&>::value, "");
+
+  // expected-warning@unordered_set:* 2 {{the specified comparator type does not provide a viable const call operator}}
+  // expected-warning@unordered_map:* 2 {{the specified comparator type does not provide a viable const call operator}}
+  // expected-warning@unordered_set:* 2 {{the specified hash functor does not provide a viable const call operator}}
+  // expected-warning@unordered_map:* 2 {{the specified hash functor does not provide a viable const call operator}}
+
+  {
+    using C = std::unordered_set<int, BadHash, BadEqual>;
+    C s;
+  }
+  {
+    using C = std::unordered_multiset<long, BadHash, BadEqual>;
+    C s;
+  }
+  {
+    using C = std::unordered_map<int, int, BadHash, BadEqual>;
+    C s;
+  }
+  {
+    using C = std::unordered_multimap<long, int, BadHash, BadEqual>;
+    C s;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.bucket.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.bucket.pass.cpp
new file mode 100644
index 0000000..4406fa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.bucket.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// size_type bucket(const key_type& __k) const;
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_map<int, std::string> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket(3), "unordered container::bucket(key) called when bucket_count() == 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.bucket_size.pass.cpp
new file mode 100644
index 0000000..858ed1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.bucket_size.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type bucket_size(size_type n) const
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_map<int, std::string> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket_size(3), "unordered container::bucket_size(n) called with n >= bucket_count()");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.max_load_factor.pass.cpp
new file mode 100644
index 0000000..b4505f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/assert.max_load_factor.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_map<int, std::string> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.max_load_factor(0), "unordered container::max_load_factor(lf) called with lf <= 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/at.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/at.abort.pass.cpp
new file mode 100644
index 0000000..01fcdf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/at.abort.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// mapped_type& at(const key_type& k);
+
+// Make sure we abort() when exceptions are disabled and we fetch a key that
+// is not in the map.
+
+// REQUIRES: no-exceptions
+// UNSUPPORTED: c++03
+
+#include <csignal>
+#include <cstdlib>
+#include <unordered_map>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+    std::signal(SIGABRT, [](int) { std::_Exit(EXIT_SUCCESS); });
+    std::unordered_map<int, int> map;
+    map.at(1);
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/at.const.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/at.const.abort.pass.cpp
new file mode 100644
index 0000000..9e3ba11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/at.const.abort.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// const mapped_type& at(const key_type& k) const;
+
+// Make sure we abort() when exceptions are disabled and we fetch a key that
+// is not in the map.
+
+// REQUIRES: no-exceptions
+// UNSUPPORTED: c++03
+
+#include <csignal>
+#include <cstdlib>
+#include <unordered_map>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+    std::signal(SIGABRT, [](int) { std::_Exit(EXIT_SUCCESS); });
+    std::unordered_map<int, int> const map;
+    map.at(1);
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.insert.hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.insert.hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..a3fe411
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.insert.hint_const_lvalue.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// iterator insert(const_iterator p, const value_type& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::unordered_map<double, int> C;
+    typedef C::value_type P;
+    C c;
+    C c2;
+    C::const_iterator e = c2.end();
+    P v(3.5, 3);
+#if TEST_STD_VER < 11
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, v),
+        "unordered_map::insert(const_iterator, const value_type&) called with an iterator not referring to this unordered_map");
+#else
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, v),
+        "unordered_map::insert(const_iterator, value_type&&) called with an iterator not referring to this unordered_map");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.insert.hint_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.insert.hint_rvalue.pass.cpp
new file mode 100644
index 0000000..4646ff5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.insert.hint_rvalue.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     iterator insert(const_iterator p, P&& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::unordered_map<double, int> C;
+    typedef C::value_type P;
+    C c;
+    C c2;
+    C::const_iterator e = c2.end();
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, P(3.5, 3)),
+        "unordered_map::insert(const_iterator, const value_type&) called with an iterator not referring to this unordered_map");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.iterator.dereference.pass.cpp
new file mode 100644
index 0000000..f08f5b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.iterator.dereference.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_map<int, std::string> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container iterator");
+    }
+
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string>>> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.iterator.increment.pass.cpp
new file mode 100644
index 0000000..bb2055f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.iterator.increment.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Increment iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_map<int, std::string> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.begin();
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container iterator");
+    }
+
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string>>> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.begin();
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.local_iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.local_iterator.dereference.pass.cpp
new file mode 100644
index 0000000..1a5a93c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.local_iterator.dereference.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_map<int, std::string> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container local_iterator");
+    }
+
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string>>> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.local_iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.local_iterator.increment.pass.cpp
new file mode 100644
index 0000000..6b33131
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.local_iterator.increment.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Increment local_iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_map<int, std::string> C;
+        C c;
+        c.insert(std::make_pair(42, std::string()));
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container local_iterator");
+    }
+
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string>>> C;
+        C c({{42, std::string()}});
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.swap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.swap.pass.cpp
new file mode 100644
index 0000000..c639b92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/debug.swap.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class Value, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, Value>>>
+// class unordered_map
+
+// void swap(unordered_map& x, unordered_map& y);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::pair<int, int> P;
+    P a1[] = {P(1, 1), P(3, 3), P(7, 7), P(9, 9), P(10, 10)};
+    P a2[] = {P(0, 0), P(2, 2), P(4, 4), P(5, 5), P(6, 6), P(8, 8), P(11, 11)};
+    std::unordered_map<int, int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::unordered_map<int, int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    std::unordered_map<int, int>::iterator i1 = c1.begin();
+    std::unordered_map<int, int>::iterator i2 = c2.begin();
+    swap(c1, c2);
+    c1.erase(i2);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c1.erase(i1), "unordered container erase(iterator) called with an iterator not referring to this container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/unord.map.modifiers/debug.erase.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/unord.map.modifiers/debug.erase.iter.pass.cpp
new file mode 100644
index 0000000..d106dea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/unord.map.modifiers/debug.erase.iter.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Call erase(const_iterator position) with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With end()
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_map<int, int> l1(a1, a1+3);
+        std::unordered_map<int, int>::const_iterator i = l1.end();
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i),
+                                "unordered container erase(iterator) called with a non-dereferenceable iterator");
+    }
+
+    // With iterator from another container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_map<int, int> l1(a1, a1+3);
+        std::unordered_map<int, int> l2(a1, a1+3);
+        std::unordered_map<int, int>::const_iterator i = l2.begin();
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(i), "unordered container erase(iterator) called with an iterator not referring to this container");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/unord.map.modifiers/debug.erase.iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/unord.map.modifiers/debug.erase.iter_iter.pass.cpp
new file mode 100644
index 0000000..5035aab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/unord.map.modifiers/debug.erase.iter_iter.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Call erase(const_iterator first, const_iterator last); with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // First iterator from a different container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_map<int, int> l1(a1, a1+3);
+        std::unordered_map<int, int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l1.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // Second iterator from a different container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_map<int, int> l1(a1, a1+3);
+        std::unordered_map<int, int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l1.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // Both iterators from a different container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_map<int, int> l1(a1, a1+3);
+        std::unordered_map<int, int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With iterators that don't form a valid range
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_map<int, int> l1(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(std::next(l1.cbegin()), l1.cbegin()),
+                                "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/version.pass.cpp
new file mode 100644
index 0000000..09196a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.map/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+#include <unordered_map>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.bucket.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.bucket.pass.cpp
new file mode 100644
index 0000000..0c2f12a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.bucket.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type bucket(const key_type& __k) const;
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multimap<int, std::string> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket(3), "unordered container::bucket(key) called when bucket_count() == 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.bucket_size.pass.cpp
new file mode 100644
index 0000000..9c27d58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.bucket_size.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type bucket_size(size_type n) const
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multimap<int, std::string> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket_size(3), "unordered container::bucket_size(n) called with n >= bucket_count()");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.max_load_factor.pass.cpp
new file mode 100644
index 0000000..42bd462
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/assert.max_load_factor.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multimap<int, std::string> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.max_load_factor(0), "unordered container::max_load_factor(lf) called with lf <= 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.insert.hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.insert.hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..ce3b3dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.insert.hint_const_lvalue.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// iterator insert(const_iterator p, const value_type& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multimap<double, int> C;
+    typedef C::value_type P;
+    C c;
+    C c2;
+    C::const_iterator e = c2.end();
+    P v(3.5, 3);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, v),
+        "unordered container::emplace_hint(const_iterator, args...) called with an iterator not referring to this unordered container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.insert.hint_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.insert.hint_rvalue.pass.cpp
new file mode 100644
index 0000000..5a24242
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.insert.hint_rvalue.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     iterator insert(const_iterator p, P&& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multimap<double, int> C;
+    typedef C::value_type P;
+    C c;
+    C c2;
+    C::const_iterator e = c2.end();
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, P(3.5, 3)),
+        "unordered container::emplace_hint(const_iterator, args...) called with an iterator not referring to this unordered container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.iterator.dereference.pass.cpp
new file mode 100644
index 0000000..05990a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.iterator.dereference.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+#include <unordered_map>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container iterator");
+    }
+
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                                        min_allocator<std::pair<const int, std::string>>> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.iterator.increment.pass.cpp
new file mode 100644
index 0000000..f84726e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.iterator.increment.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Increment iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.begin();
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container iterator");
+    }
+
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        C c;
+        c.insert(std::make_pair(1, "one"));
+        C::iterator i = c.begin();
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.local_iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.local_iterator.dereference.pass.cpp
new file mode 100644
index 0000000..d1d6e37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.local_iterator.dereference.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container local_iterator");
+    }
+
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                                        min_allocator<std::pair<const int, std::string>>> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.local_iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.local_iterator.increment.pass.cpp
new file mode 100644
index 0000000..2a97328
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.local_iterator.increment.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Increment local_iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        C c;
+        c.insert(std::make_pair(42, std::string()));
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container local_iterator");
+    }
+
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                                        min_allocator<std::pair<const int, std::string>>> C;
+        C c({{1, std::string()}});
+        c.insert(std::make_pair(42, std::string()));
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.swap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.swap.pass.cpp
new file mode 100644
index 0000000..29efbe2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/debug.swap.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class Value, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, Value>>>
+// class unordered_multimap
+
+// void swap(unordered_multimap& x, unordered_multimap& y);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::pair<int, int> P;
+    P a1[] = {P(1, 1), P(3, 3), P(7, 7), P(9, 9), P(10, 10)};
+    P a2[] = {P(0, 0), P(2, 2), P(4, 4), P(5, 5), P(6, 6), P(8, 8), P(11, 11)};
+    std::unordered_multimap<int, int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::unordered_multimap<int, int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    std::unordered_multimap<int, int>::iterator i1 = c1.begin();
+    std::unordered_multimap<int, int>::iterator i2 = c2.begin();
+    swap(c1, c2);
+    c1.erase(i2);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c1.erase(i1), "unordered container erase(iterator) called with an iterator not referring to this container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/unord.multimap.modifiers/debug.erase.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/unord.multimap.modifiers/debug.erase.iter.pass.cpp
new file mode 100644
index 0000000..1b29719
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/unord.multimap.modifiers/debug.erase.iter.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Call erase(const_iterator position) with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With end()
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_multimap<int, int> l1(a1, a1+3);
+        std::unordered_multimap<int, int>::const_iterator i = l1.end();
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i),
+                                "unordered container erase(iterator) called with a non-dereferenceable iterator");
+    }
+
+    // With iterator from another container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_multimap<int, int> l1(a1, a1+3);
+        std::unordered_multimap<int, int> l2(a1, a1+3);
+        std::unordered_multimap<int, int>::const_iterator i = l2.begin();
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(i), "unordered container erase(iterator) called with an iterator not referring to this container");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/unord.multimap.modifiers/debug.erase.iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/unord.multimap.modifiers/debug.erase.iter_iter.pass.cpp
new file mode 100644
index 0000000..85879e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multimap/unord.multimap.modifiers/debug.erase.iter_iter.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Call erase(const_iterator first, const_iterator last); with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_map>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With first iterator from another container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_multimap<int, int> l1(a1, a1+3);
+        std::unordered_multimap<int, int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l1.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With second iterator from another container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_multimap<int, int> l1(a1, a1+3);
+        std::unordered_multimap<int, int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l1.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With both iterators from another container
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_multimap<int, int> l1(a1, a1+3);
+        std::unordered_multimap<int, int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With an invalid range
+    {
+        typedef std::pair<int, int> P;
+        P a1[] = {P(1, 1), P(2, 2), P(3, 3)};
+        std::unordered_multimap<int, int> l1(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(std::next(l1.cbegin()), l1.cbegin()),
+                                "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.bucket.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.bucket.pass.cpp
new file mode 100644
index 0000000..37d43fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.bucket.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type bucket(const key_type& __k) const;
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multiset<int> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket(3), "unordered container::bucket(key) called when bucket_count() == 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.bucket_size.pass.cpp
new file mode 100644
index 0000000..c8e7523
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.bucket_size.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type bucket_size(size_type n) const
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multiset<int> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket_size(3), "unordered container::bucket_size(n) called with n >= bucket_count()");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.max_load_factor.pass.cpp
new file mode 100644
index 0000000..1b5aaa4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/assert.max_load_factor.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multiset<int> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.max_load_factor(0), "unordered container::max_load_factor(lf) called with lf <= 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.erase.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.erase.iter.pass.cpp
new file mode 100644
index 0000000..7d477e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.erase.iter.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Call erase(const_iterator position) with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With end()
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_multiset<int> l1(a1, a1+3);
+        std::unordered_multiset<int>::const_iterator i = l1.end();
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i),
+                                "unordered container erase(iterator) called with a non-dereferenceable iterator");
+    }
+
+    // With iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_multiset<int> l1(a1, a1+3);
+        std::unordered_multiset<int> l2(a1, a1+3);
+        std::unordered_multiset<int>::const_iterator i = l2.begin();
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(i), "unordered container erase(iterator) called with an iterator not referring to this container");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.erase.iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.erase.iter_iter.pass.cpp
new file mode 100644
index 0000000..f229b99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.erase.iter_iter.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Call erase(const_iterator first, const_iterator last); with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With first iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_multiset<int> l1(a1, a1+3);
+        std::unordered_multiset<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l1.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With second iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_multiset<int> l1(a1, a1+3);
+        std::unordered_multiset<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l1.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With both iterators from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_multiset<int> l1(a1, a1+3);
+        std::unordered_multiset<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With an invalid range
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_multiset<int> l1(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(std::next(l1.cbegin()), l1.cbegin()),
+                                "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.insert.hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.insert.hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..50e0d8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.insert.hint_const_lvalue.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// iterator insert(const_iterator p, const value_type& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_multiset<double> C;
+    typedef C::value_type P;
+    C c;
+    C c2;
+    C::const_iterator e = c2.end();
+    P v(3.5);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, v),
+        "unordered container::emplace_hint(const_iterator, args...) called with an iterator not referring to this unordered container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.iterator.dereference.pass.cpp
new file mode 100644
index 0000000..a7fdff7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.iterator.dereference.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T> C;
+        C c(1);
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container const_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c(1);
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.iterator.increment.pass.cpp
new file mode 100644
index 0000000..9ca0d4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.iterator.increment.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Increment iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T> C;
+        C c;
+        c.insert(42);
+        C::iterator i = c.begin();
+        assert(i != c.end());
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c({42});
+        C::iterator i = c.begin();
+        assert(i != c.end());
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.local_iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.local_iterator.dereference.pass.cpp
new file mode 100644
index 0000000..0b4bc9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.local_iterator.dereference.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            *i, "Attempted to dereference a non-dereferenceable unordered container const_local_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            *i, "Attempted to dereference a non-dereferenceable unordered container const_local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.local_iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.local_iterator.increment.pass.cpp
new file mode 100644
index 0000000..8f82dfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.local_iterator.increment.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Increment local_iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T> C;
+        C c;
+        c.insert(42);
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i,
+                                "Attempted to increment a non-incrementable unordered container const_local_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_multiset<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c({42});
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i,
+                                "Attempted to increment a non-incrementable unordered container const_local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.swap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.swap.pass.cpp
new file mode 100644
index 0000000..476eb59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.multiset/debug.swap.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void swap(unordered_multiset& x, unordered_multiset& y);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    int a1[] = {1, 3, 7, 9, 10};
+    int a2[] = {0, 2, 4, 5, 6, 8, 11};
+    std::unordered_multiset<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::unordered_multiset<int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    std::unordered_multiset<int>::iterator i1 = c1.begin();
+    std::unordered_multiset<int>::iterator i2 = c2.begin();
+    swap(c1, c2);
+    c1.erase(i2);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c1.erase(i1), "unordered container erase(iterator) called with an iterator not referring to this container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.bucket.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.bucket.pass.cpp
new file mode 100644
index 0000000..5634ffd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.bucket.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type bucket(const key_type& __k) const;
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_set<int> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket(3), "unordered container::bucket(key) called when bucket_count() == 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.bucket_size.pass.cpp
new file mode 100644
index 0000000..dd3ad22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.bucket_size.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type bucket_size(size_type n) const
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_set<int> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.bucket_size(3), "unordered container::bucket_size(n) called with n >= bucket_count()");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.max_load_factor.pass.cpp
new file mode 100644
index 0000000..385e627
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/assert.max_load_factor.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_set<int> C;
+    C c;
+    TEST_LIBCPP_ASSERT_FAILURE(c.max_load_factor(-0.5f),
+                               "unordered container::max_load_factor(lf) called with lf <= 0");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.erase.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.erase.iter.pass.cpp
new file mode 100644
index 0000000..1f3f5ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.erase.iter.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Call erase(const_iterator position) with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With end()
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_set<int> l1(a1, a1+3);
+        std::unordered_set<int>::const_iterator i = l1.end();
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i),
+                                "unordered container erase(iterator) called with a non-dereferenceable iterator");
+    }
+
+    // With iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_set<int> l1(a1, a1+3);
+        std::unordered_set<int> l2(a1, a1+3);
+        std::unordered_set<int>::const_iterator i = l2.begin();
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(i), "unordered container erase(iterator) called with an iterator not referring to this container");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.erase.iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.erase.iter_iter.pass.cpp
new file mode 100644
index 0000000..542d382
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.erase.iter_iter.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Call erase(const_iterator first, const_iterator last); with first iterator from another container
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // With first iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_set<int> l1(a1, a1+3);
+        std::unordered_set<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l1.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With second iterator from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_set<int> l1(a1, a1+3);
+        std::unordered_set<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l1.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With both iterators from another container
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_set<int> l1(a1, a1+3);
+        std::unordered_set<int> l2(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            l1.erase(l2.cbegin(), std::next(l2.cbegin())),
+            "unordered container::erase(iterator, iterator) called with an iterator not referring to this container");
+    }
+
+    // With an invalid range
+    {
+        int a1[] = {1, 2, 3};
+        std::unordered_set<int> l1(a1, a1+3);
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(std::next(l1.cbegin()), l1.cbegin()),
+                                "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.insert.hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.insert.hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..b452a8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.insert.hint_const_lvalue.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// iterator insert(const_iterator p, const value_type& x);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::unordered_set<double> C;
+    typedef C::value_type P;
+    C c;
+    C c2;
+    C::const_iterator e = c2.end();
+    P v(3.5);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c.insert(e, v),
+        "unordered_set::insert(const_iterator, const value_type&) called with an iterator not referring to this unordered_set");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.iterator.dereference.pass.cpp
new file mode 100644
index 0000000..2e8c0c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.iterator.dereference.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_set<T> C;
+        C c(1);
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container const_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_set<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c(1);
+        C::iterator i = c.end();
+        TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.iterator.increment.pass.cpp
new file mode 100644
index 0000000..a858aa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.iterator.increment.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Increment iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_set<T> C;
+        C c;
+        c.insert(42);
+        C::iterator i = c.begin();
+        assert(i != c.end());
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_set<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c({42});
+        C::iterator i = c.begin();
+        assert(i != c.end());
+        ++i;
+        assert(i == c.end());
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container const_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.local_iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.local_iterator.dereference.pass.cpp
new file mode 100644
index 0000000..30582d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.local_iterator.dereference.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_set<T> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            *i, "Attempted to dereference a non-dereferenceable unordered container const_local_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_set<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c(1);
+        C::local_iterator i = c.end(0);
+        TEST_LIBCPP_ASSERT_FAILURE(
+            *i, "Attempted to dereference a non-dereferenceable unordered container const_local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.local_iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.local_iterator.increment.pass.cpp
new file mode 100644
index 0000000..022b66e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.local_iterator.increment.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Increment local_iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        typedef std::unordered_set<T> C;
+        C c;
+        c.insert(42);
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container const_local_iterator");
+    }
+
+    {
+        typedef int T;
+        typedef std::unordered_set<T, std::hash<T>, std::equal_to<T>, min_allocator<T>> C;
+        C c({42});
+        C::size_type b = c.bucket(42);
+        C::local_iterator i = c.begin(b);
+        assert(i != c.end(b));
+        ++i;
+        assert(i == c.end(b));
+        TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable unordered container const_local_iterator");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.swap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.swap.pass.cpp
new file mode 100644
index 0000000..afcaded
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/debug.swap.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void swap(unordered_set& x, unordered_set& y);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <unordered_set>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    int a1[] = {1, 3, 7, 9, 10};
+    int a2[] = {0, 2, 4, 5, 6, 8, 11};
+    std::unordered_set<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::unordered_set<int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    std::unordered_set<int>::iterator i1 = c1.begin();
+    std::unordered_set<int>::iterator i2 = c2.begin();
+    swap(c1, c2);
+    c1.erase(i2);
+    TEST_LIBCPP_ASSERT_FAILURE(
+        c1.erase(i1), "unordered container erase(iterator) called with an iterator not referring to this container");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/missing_hash_specialization.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/missing_hash_specialization.fail.cpp
new file mode 100644
index 0000000..45be37d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/missing_hash_specialization.fail.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: diagnose-if-support
+// UNSUPPORTED: c++03
+
+// Libc++ only provides a defined primary template for std::hash in C++14 and
+// newer.
+// UNSUPPORTED: c++11
+
+// <unordered_set>
+
+// Test that we generate a reasonable diagnostic when the specified hash is
+// not enabled.
+
+#include <unordered_set>
+#include <utility>
+
+using VT = std::pair<int, int>;
+
+struct BadHashNoCopy {
+  BadHashNoCopy() = default;
+  BadHashNoCopy(BadHashNoCopy const&) = delete;
+
+  template <class T>
+  size_t operator()(T const&) const { return 0; }
+};
+
+struct BadHashNoCall {
+
+};
+
+
+struct GoodHashNoDefault {
+  explicit GoodHashNoDefault(void*) {}
+  template <class T>
+  size_t operator()(T const&) const { return 0; }
+};
+
+int main(int, char**) {
+
+  {
+    using Set = std::unordered_set<VT>;
+    Set s; // expected-error@__hash_table:* {{the specified hash does not meet the Hash requirements}}
+
+
+  // FIXME: It would be great to suppress the below diagnostic all together.
+  //        but for now it's sufficient that it appears last. However there is
+  //        currently no way to test the order diagnostics are issued.
+  // expected-error@*:* {{call to implicitly-deleted default constructor of 'std::}}
+  }
+  {
+    using Set = std::unordered_set<int, BadHashNoCopy>;
+    Set s; // expected-error@__hash_table:* {{the specified hash does not meet the Hash requirements}}
+  }
+  {
+    using Set = std::unordered_set<int, BadHashNoCall>;
+    Set s; // expected-error@__hash_table:* {{the specified hash does not meet the Hash requirements}}
+  }
+  {
+    using Set = std::unordered_set<int, GoodHashNoDefault>;
+    Set s(/*bucketcount*/42, GoodHashNoDefault(nullptr));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/version.pass.cpp
new file mode 100644
index 0000000..7463275
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/unord/unord.set/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+#include <unordered_set>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/debug.iterator-indexing.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/debug.iterator-indexing.pass.cpp
new file mode 100644
index 0000000..8ed6874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/debug.iterator-indexing.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Make sure that std::span's iterators check for OOB accesses when the debug mode is enabled.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode
+
+#include <span>
+
+#include "check_assertion.h"
+
+struct Foo {
+    int x;
+};
+
+int main(int, char**) {
+    // span<T>::iterator
+    {
+        Foo array[] = {{0}, {1}, {2}};
+        std::span<Foo> const span(array, 3);
+        {
+            auto it = span.end();
+            TEST_LIBCPP_ASSERT_FAILURE(*it, "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.end();
+            TEST_LIBCPP_ASSERT_FAILURE(it->x, "__bounded_iter::operator->: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.begin();
+            TEST_LIBCPP_ASSERT_FAILURE(it[3], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+        }
+    }
+
+    // span<T, N>::iterator
+    {
+        Foo array[] = {{0}, {1}, {2}};
+        std::span<Foo, 3> const span(array, 3);
+        {
+            auto it = span.end();
+            TEST_LIBCPP_ASSERT_FAILURE(*it, "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.end();
+            TEST_LIBCPP_ASSERT_FAILURE(it->x, "__bounded_iter::operator->: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.begin();
+            TEST_LIBCPP_ASSERT_FAILURE(it[3], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+        }
+    }
+
+    // span<T>::reverse_iterator
+    {
+        Foo array[] = {{0}, {1}, {2}};
+        std::span<Foo> const span(array, 3);
+        {
+            auto it = span.rend();
+            TEST_LIBCPP_ASSERT_FAILURE(*it, "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.rend();
+            TEST_LIBCPP_ASSERT_FAILURE(it->x, "__bounded_iter::operator->: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.rbegin();
+            TEST_LIBCPP_ASSERT_FAILURE(it[3], "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+        }
+    }
+
+    // span<T, N>::reverse_iterator
+    {
+        Foo array[] = {{0}, {1}, {2}};
+        std::span<Foo, 3> const span(array, 3);
+        {
+            auto it = span.rend();
+            TEST_LIBCPP_ASSERT_FAILURE(*it, "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.rend();
+            TEST_LIBCPP_ASSERT_FAILURE(it->x, "__bounded_iter::operator->: Attempt to dereference an out-of-range iterator");
+        }
+        {
+            auto it = span.rbegin();
+            TEST_LIBCPP_ASSERT_FAILURE(it[3], "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+        }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.iter_sent.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.iter_sent.pass.cpp
new file mode 100644
index 0000000..cd373e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.iter_sent.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<T, Extent>::span(Iterator it, Sentinel sent);
+//
+// Check that we ensure `Extent == sent - it` and also that `[it, sent)` is a valid range.
+//
+//
+// constexpr span<T, dynamic_extent>::span(Iterator it, Sentinel sent);
+//
+// Check that we ensure that `[it, sent)` is a valid range.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+
+        auto invalid_range = [&] { std::span<int> const s(array.end(), array.begin()); (void)s; };
+        TEST_LIBCPP_ASSERT_FAILURE(invalid_range(), "invalid range in span's constructor (iterator, sentinel)");
+    }
+    {
+        std::array<int, 3> array{0, 1, 2};
+
+        auto invalid_range = [&] { std::span<int, 3> const s(array.end(), array.begin()); (void)s; };
+        TEST_LIBCPP_ASSERT_FAILURE(invalid_range(), "invalid range in span's constructor (iterator, sentinel)");
+
+        auto invalid_size = [&] { std::span<int, 3> const s(array.begin(), array.begin() + 2); (void)s; };
+        TEST_LIBCPP_ASSERT_FAILURE(invalid_size(), "invalid range in span's constructor (iterator, sentinel): last - first != extent");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.iter_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.iter_size.pass.cpp
new file mode 100644
index 0000000..1888b4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.iter_size.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<T, Extent>::span(Iterator, size_type);
+//
+// Check that the passed size is equal to the statically known extent.
+// Note that it doesn't make sense to validate the incoming size in the
+// dynamic_extent version.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::array<int, 3> array{0, 1, 2};
+
+    auto too_large = [&] { std::span<int, 3> const s(array.data(), 4); (void)s; };
+    TEST_LIBCPP_ASSERT_FAILURE(too_large(), "size mismatch in span's constructor (iterator, len)");
+
+    auto too_small = [&] { std::span<int, 3> const s(array.data(), 2); (void)s; };
+    TEST_LIBCPP_ASSERT_FAILURE(too_small(), "size mismatch in span's constructor (iterator, len)");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.other_span.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.other_span.pass.cpp
new file mode 100644
index 0000000..9e92e83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.other_span.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<T, Extent>::span(const span<U, dynamic_extent>& other);
+//
+// Check that we ensure `other.size() == Extent`.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::array<int, 3> array{0, 1, 2};
+    std::span<int> other(array.data(), 3);
+
+    auto invalid_source = [&] { std::span<int, 2> const s(other); (void)s; };
+    TEST_LIBCPP_ASSERT_FAILURE(invalid_source(), "size mismatch in span's constructor (other span)");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.range.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.range.pass.cpp
new file mode 100644
index 0000000..bf1233f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.cons/assert.range.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<T, Extent>::span(Range&& r);
+//
+// Check that we ensure `size(r) == Extent`.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <span>
+#include <vector>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::vector<int> vec{0, 1, 2}; // must use std::vector instead of std::array, because std::span has a special constructor from std::array
+
+    auto invalid_size = [&] { std::span<int, 2> const s(vec); (void)s; };
+    TEST_LIBCPP_ASSERT_FAILURE(invalid_size(), "size mismatch in span's constructor (range)");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.back.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.back.pass.cpp
new file mode 100644
index 0000000..e6fb20d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.back.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr reference back() const noexcept;
+
+// Make sure that accessing a span out-of-bounds triggers an assertion.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int> const s(array.data(), 0);
+        TEST_LIBCPP_ASSERT_FAILURE(s.back(), "span<T>::back() on empty span");
+    }
+
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int, 0> const s(array.data(), 0);
+        TEST_LIBCPP_ASSERT_FAILURE(s.back(), "span<T, N>::back() on empty span");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.front.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.front.pass.cpp
new file mode 100644
index 0000000..8234ef8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.front.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr reference front() const noexcept;
+
+// Make sure that accessing a span out-of-bounds triggers an assertion.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int> const s(array.data(), 0);
+        TEST_LIBCPP_ASSERT_FAILURE(s.front(), "span<T>::front() on empty span");
+    }
+
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int, 0> const s(array.data(), 0);
+        TEST_LIBCPP_ASSERT_FAILURE(s.front(), "span<T, N>::front() on empty span");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.op_idx.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.op_idx.pass.cpp
new file mode 100644
index 0000000..2e643b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.elem/assert.op_idx.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr reference operator[](size_type idx) const;
+
+// Make sure that accessing a span out-of-bounds triggers an assertion.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s[3], "span<T>::operator[](index): index out of range");
+    }
+
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int, 3> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s[3], "span<T, N>::operator[](index): index out of range");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.first.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.first.pass.cpp
new file mode 100644
index 0000000..d17948f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.first.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<element_type, dynamic_extent> first(size_type count) const;
+
+// Make sure that creating a sub-span with an incorrect number of elements triggers an assertion.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s.first(4), "span<T>::first(count): count out of range");
+        TEST_LIBCPP_ASSERT_FAILURE(s.first<4>(), "span<T>::first<Count>(): Count out of range");
+    }
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int, 3> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s.first(4), "span<T, N>::first(count): count out of range");
+        // s.first<4>() caught at compile-time (tested elsewhere)
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.last.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.last.pass.cpp
new file mode 100644
index 0000000..e49f37f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.last.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<element_type, dynamic_extent> last(size_type count) const;
+
+// Make sure that creating a sub-span with an incorrect number of elements triggers an assertion.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s.last(4), "span<T>::last(count): count out of range");
+        TEST_LIBCPP_ASSERT_FAILURE(s.last<4>(), "span<T>::last<Count>(): Count out of range");
+    }
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int, 3> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s.last(4), "span<T, N>::last(count): count out of range");
+        // s.last<4>() caught at compile-time (tested elsewhere)
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.subspan.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.subspan.pass.cpp
new file mode 100644
index 0000000..487140f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/containers/views/views.span/span.sub/assert.subspan.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+//
+// constexpr span<element_type, dynamic_extent> subspan(
+//   size_type offset, size_type count = dynamic_extent) const;
+//
+//  Requires: (0 <= Offset && Offset <= size())
+//      && (Count == dynamic_extent || Count >= 0 && Offset + Count <= size())
+
+// Make sure that creating a sub-span with an incorrect number of elements triggers an assertion.
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <array>
+#include <span>
+#include <cstddef>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan(4), "span<T>::subspan(offset, count): offset out of range");
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan<4>(), "span<T>::subspan<Offset, Count>(): Offset out of range");
+
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan(0, 4), "span<T>::subspan(offset, count): count out of range");
+        TEST_LIBCPP_ASSERT_FAILURE((s.subspan<0, 4>()), "span<T>::subspan<Offset, Count>(): Offset + Count out of range");
+
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan(1, 3), "span<T>::subspan(offset, count): offset + count out of range");
+        TEST_LIBCPP_ASSERT_FAILURE((s.subspan<1, 3>()), "span<T>::subspan<Offset, Count>(): Offset + Count out of range");
+    }
+    {
+        std::array<int, 3> array{0, 1, 2};
+        std::span<int, 3> const s(array.data(), array.size());
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan(4), "span<T, N>::subspan(offset, count): offset out of range");
+        // s.subspan<4>() caught at compile-time (tested elsewhere)
+
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan(0, 4), "span<T, N>::subspan(offset, count): count out of range");
+        // s.subspan<0, 4>() caught at compile-time (tested elsewhere)
+
+        TEST_LIBCPP_ASSERT_FAILURE(s.subspan(1, 3), "span<T, N>::subspan(offset, count): offset + count out of range");
+        // s.subspan<1, 3>() caught at compile-time (tested elsewhere)
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/containers.multithread.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/containers.multithread.pass.cpp
new file mode 100644
index 0000000..a389c31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/containers.multithread.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++11, c++14
+// UNSUPPORTED: no-threads
+
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+// test multithreaded container debugging
+
+#include <cassert>
+#include <cstddef>
+#include <deque>
+#include <list>
+#include <thread>
+#include <vector>
+
+template <typename Container>
+Container makeContainer(int size) {
+  Container c;
+  typedef typename Container::value_type ValueType;
+  for (int i = 0; i < size; ++i)
+    c.insert(c.end(), ValueType(i));
+  assert(c.size() == static_cast<std::size_t>(size));
+  return c;
+}
+
+template <typename Container>
+void ThreadUseIter() {
+  const size_t maxRounds = 7;
+  struct TestRunner{
+    void operator()() {
+      for (size_t count = 0; count < maxRounds; count++) {
+        const size_t containerCount = 11;
+        std::vector<Container> containers;
+        std::vector<typename Container::iterator> iterators;
+        for (size_t containerIndex = 0; containerIndex < containerCount; containerIndex++) {
+          containers.push_back(makeContainer<Container>(3));
+          Container& c = containers.back();
+          iterators.push_back(c.begin());
+          iterators.push_back(c.end());
+        }
+      }
+    }
+  };
+
+  TestRunner r;
+  const size_t threadCount = 4;
+  std::vector<std::thread> threads;
+  for (size_t count = 0; count < threadCount; count++)
+    threads.emplace_back(r);
+  r();
+  for (size_t count = 0; count < threadCount; count++)
+    threads[count].join();
+}
+
+int main(int, char**) {
+  ThreadUseIter<std::vector<int> >();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/containers/associative_containers.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/associative_containers.pass.cpp
new file mode 100644
index 0000000..00471ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/associative_containers.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03, c++11, c++14
+
+// test container debugging
+
+#include <map>
+#include <set>
+#include <utility>
+#include <cassert>
+#include "check_assertion.h"
+#include "container_debug_tests.h"
+#include "test_macros.h"
+
+using namespace IteratorDebugChecks;
+
+template <class Container, ContainerType CT>
+struct AssociativeContainerChecks : BasicContainerChecks<Container, CT> {
+  using Base = BasicContainerChecks<Container, CT>;
+  using value_type = typename Container::value_type;
+  using iterator = typename Container::iterator;
+  using const_iterator = typename Container::const_iterator;
+  using traits = std::iterator_traits<iterator>;
+  using category = typename traits::iterator_category;
+
+  using Base::makeContainer;
+public:
+  static void run() {
+    Base::run();
+  }
+
+private:
+  // FIXME Add tests here
+};
+
+int main(int, char**)
+{
+  using SetAlloc = test_allocator<int>;
+  using MapAlloc = test_allocator<std::pair<const int, int>>;
+  // FIXME: Add debug mode to these containers
+  if ((false)) {
+    AssociativeContainerChecks<
+        std::set<int, std::less<int>, SetAlloc>, CT_Set>::run();
+    AssociativeContainerChecks<
+        std::multiset<int, std::less<int>, SetAlloc>, CT_MultiSet>::run();
+    AssociativeContainerChecks<
+        std::map<int, int, std::less<int>, MapAlloc>, CT_Map>::run();
+    AssociativeContainerChecks<
+        std::multimap<int, int, std::less<int>, MapAlloc>, CT_MultiMap>::run();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/containers/sequence_container_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/sequence_container_iterators.pass.cpp
new file mode 100644
index 0000000..c9a9fbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/sequence_container_iterators.pass.cpp
@@ -0,0 +1,333 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03, c++11, c++14
+
+// test container debugging
+
+#include <forward_list>
+#include <list>
+#include <vector>
+#include <deque>
+#include "check_assertion.h"
+#include "container_debug_tests.h"
+#include "test_macros.h"
+
+using namespace IteratorDebugChecks;
+
+template <class Container, ContainerType CT>
+struct SequenceContainerChecks : BasicContainerChecks<Container, CT> {
+  using Base = BasicContainerChecks<Container, CT>;
+  using value_type = typename Container::value_type;
+  using allocator_type = typename Container::allocator_type;
+  using iterator = typename Container::iterator;
+  using const_iterator = typename Container::const_iterator;
+
+  using Base::makeContainer;
+  using Base::makeValueType;
+public:
+  static void run() {
+    Base::run();
+    SanityTest();
+    FrontOnEmptyContainer();
+
+    if constexpr(CT != CT_ForwardList) {
+        AssignInvalidates();
+        BackOnEmptyContainer();
+        InsertIterValue();
+        InsertIterSizeValue();
+        InsertIterIterIter();
+        EmplaceIterValue();
+        EraseIterIter();
+      }
+    else {
+      SpliceFirstElemAfter();
+    }
+    if constexpr (CT == CT_Vector || CT == CT_Deque || CT == CT_List) {
+      PopBack();
+    }
+    if constexpr (CT == CT_List || CT == CT_Deque) {
+      PopFront(); // FIXME: Run with forward list as well
+    }
+    if constexpr (CT == CT_List || CT == CT_ForwardList) {
+      RemoveFirstElem();
+    }
+    if constexpr (CT == CT_List) {
+      SpliceFirstElem();
+      SpliceSameContainer();
+    }
+  }
+
+private:
+  static void SanityTest() {
+    // sanity test
+    Container C = {1, 1, 1, 1};
+    ::DoNotOptimize(&C);
+  }
+
+  static void RemoveFirstElem() {
+    // See llvm.org/PR35564
+    // remove(<first-elem>)
+    {
+      Container C = makeContainer(1);
+      auto FirstVal = *(C.begin());
+      C.remove(FirstVal);
+      assert(C.empty());
+    }
+    {
+      Container C = {1, 1, 1, 1};
+      auto FirstVal = *(C.begin());
+      C.remove(FirstVal);
+      assert(C.empty());
+    }
+  }
+
+  static void SpliceFirstElem() {
+    // See llvm.org/PR35564
+    // splice(<first-elem>)
+    {
+      Container C = makeContainer(1);
+      Container C2;
+      C2.splice(C2.end(), C, C.begin(), ++C.begin());
+    }
+    {
+      Container C = makeContainer(1);
+      Container C2;
+      C2.splice(C2.end(), C, C.begin());
+    }
+  }
+
+  static void SpliceSameContainer() {
+    // splice(<same-container>)
+    Container C = {1, 1};
+    C.splice(C.end(), C, C.begin());
+  }
+
+  static void SpliceFirstElemAfter() {
+    // See llvm.org/PR35564
+    // splice(<first-elem>)
+    {
+      Container C = makeContainer(1);
+      Container C2;
+      C2.splice_after(C2.begin(), C, C.begin(), ++C.begin());
+    }
+    {
+      Container C = makeContainer(1);
+      Container C2;
+      C2.splice_after(C2.begin(), C, C.begin());
+    }
+  }
+
+  static void AssignInvalidates() {
+    // assign(Size, Value)
+    Container C(allocator_type{});
+    iterator it1, it2, it3;
+    auto reset = [&]() {
+      C = makeContainer(3);
+      it1 = C.begin();
+      it2 = ++C.begin();
+      it3 = C.end();
+    };
+    auto check = [&]() {
+      EXPECT_DEATH( C.erase(it1) );
+      EXPECT_DEATH( C.erase(it2) );
+      EXPECT_DEATH( C.erase(it3, C.end()) );
+    };
+    reset();
+    C.assign(2, makeValueType(4));
+    check();
+    reset();
+    // assign(Iter, Iter)
+    std::vector<value_type> V = {
+        makeValueType(1),
+        makeValueType(2),
+        makeValueType(3)
+    };
+    C.assign(V.begin(), V.end());
+    check();
+    reset();
+    // assign(initializer_list)
+    C.assign({makeValueType(1), makeValueType(2), makeValueType(3)});
+    check();
+  }
+
+  static void BackOnEmptyContainer() {
+    // testing back on empty
+    Container C = makeContainer(1);
+    Container const& CC = C;
+    (void)C.back();
+    (void)CC.back();
+    C.clear();
+    EXPECT_DEATH( C.back() );
+    EXPECT_DEATH( CC.back() );
+  }
+
+  static void FrontOnEmptyContainer() {
+    // testing front on empty
+    Container C = makeContainer(1);
+    Container const& CC = C;
+    (void)C.front();
+    (void)CC.front();
+    C.clear();
+    EXPECT_DEATH( C.front() );
+    EXPECT_DEATH( CC.front() );
+  }
+
+  static void EraseIterIter() {
+    // testing erase iter iter invalidation
+    Container C1 = makeContainer(3);
+    iterator it1 = C1.begin();
+    iterator it1_next = ++C1.begin();
+    iterator it1_after_next = ++C1.begin();
+    ++it1_after_next;
+    iterator it1_back = --C1.end();
+    assert(it1_next != it1_back);
+    if (CT == CT_Vector) {
+      EXPECT_DEATH( C1.erase(it1_next, it1) ); // bad range
+    }
+    C1.erase(it1, it1_after_next);
+    EXPECT_DEATH( C1.erase(it1) );
+    EXPECT_DEATH( C1.erase(it1_next) );
+    if (CT == CT_List) {
+      C1.erase(it1_back);
+    } else {
+      EXPECT_DEATH( C1.erase(it1_back) );
+    }
+  }
+
+  static void PopBack() {
+    // testing  pop_back() invalidation
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.end();
+    --it1;
+    C1.pop_back();
+    EXPECT_DEATH( C1.erase(it1) );
+    C1.erase(C1.begin());
+    assert(C1.size() == 0);
+    EXPECT_DEATH( C1.pop_back() );
+  }
+
+  static void PopFront() {
+    // testing pop_front() invalidation
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    C1.pop_front();
+    EXPECT_DEATH( C1.erase(it1) );
+    C1.erase(C1.begin());
+    assert(C1.size() == 0);
+    EXPECT_DEATH( C1.pop_front() );
+  }
+
+  static void InsertIterValue() {
+    // testing insert(iter, value)
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    iterator it1_next = it1;
+    ++it1_next;
+    Container C2 = C1;
+    const value_type value = makeValueType(3);
+    value_type rvalue = makeValueType(3);
+    EXPECT_DEATH( C2.insert(it1, value) ); // wrong container
+    EXPECT_DEATH( C2.insert(it1, std::move(rvalue)) ); // wrong container
+    C1.insert(it1_next, value);
+    if  (CT == CT_List) {
+      C1.insert(it1_next, value);
+      C1.insert(it1, value);
+      C1.insert(it1_next, std::move(rvalue));
+      C1.insert(it1, std::move(rvalue));
+    } else {
+      EXPECT_DEATH( C1.insert(it1_next, value) ); // invalidated iterator
+      EXPECT_DEATH( C1.insert(it1, value) ); // invalidated iterator
+      EXPECT_DEATH( C1.insert(it1_next, std::move(rvalue)) ); // invalidated iterator
+      EXPECT_DEATH( C1.insert(it1, std::move(rvalue)) ); // invalidated iterator
+    }
+  }
+
+  static void EmplaceIterValue() {
+    // testing emplace(iter, value)
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    iterator it1_next = it1;
+    ++it1_next;
+    Container C2 = C1;
+    const value_type value = makeValueType(3);
+    EXPECT_DEATH( C2.emplace(it1, value) ); // wrong container
+    EXPECT_DEATH( C2.emplace(it1, makeValueType(4)) ); // wrong container
+    C1.emplace(it1_next, value);
+    if  (CT == CT_List) {
+      C1.emplace(it1_next, value);
+      C1.emplace(it1, value);
+    } else {
+      EXPECT_DEATH( C1.emplace(it1_next, value) ); // invalidated iterator
+      EXPECT_DEATH( C1.emplace(it1, value) ); // invalidated iterator
+    }
+  }
+
+  static void InsertIterSizeValue() {
+    // testing insert(iter, size, value)
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    iterator it1_next = it1;
+    ++it1_next;
+    Container C2 = C1;
+    const value_type value = makeValueType(3);
+    EXPECT_DEATH( C2.insert(it1, 1, value) ); // wrong container
+    C1.insert(it1_next, 2, value);
+    if  (CT == CT_List) {
+      C1.insert(it1_next, 3, value);
+      C1.insert(it1, 1, value);
+    } else {
+      EXPECT_DEATH( C1.insert(it1_next, 1, value) ); // invalidated iterator
+      EXPECT_DEATH( C1.insert(it1, 1, value) ); // invalidated iterator
+    }
+  }
+
+  static void InsertIterIterIter() {
+    // testing insert(iter, iter, iter)
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    iterator it1_next = it1;
+    ++it1_next;
+    Container C2 = C1;
+    std::vector<value_type> V = {
+        makeValueType(1),
+        makeValueType(2),
+        makeValueType(3)
+    };
+    EXPECT_DEATH( C2.insert(it1, V.begin(), V.end()) ); // wrong container
+    C1.insert(it1_next, V.begin(), V.end());
+    if  (CT == CT_List) {
+      C1.insert(it1_next, V.begin(), V.end());
+      C1.insert(it1, V.begin(), V.end());
+    } else {
+      EXPECT_DEATH( C1.insert(it1_next, V.begin(), V.end()) ); // invalidated iterator
+      EXPECT_DEATH( C1.insert(it1, V.begin(), V.end()) ); // invalidated iterator
+    }
+  }
+};
+
+int main(int, char**)
+{
+  using Alloc = test_allocator<int>;
+  {
+    SequenceContainerChecks<std::list<int, Alloc>, CT_List>::run();
+    SequenceContainerChecks<std::vector<int, Alloc>, CT_Vector>::run();
+  }
+  // FIXME these containers don't support iterator debugging
+  if ((false)) {
+    SequenceContainerChecks<
+        std::vector<bool, test_allocator<bool>>, CT_VectorBool>::run();
+    SequenceContainerChecks<
+        std::forward_list<int, Alloc>, CT_ForwardList>::run();
+    SequenceContainerChecks<
+        std::deque<int, Alloc>, CT_Deque>::run();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/containers/string.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/string.pass.cpp
new file mode 100644
index 0000000..fc6cc42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/string.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03, c++11, c++14
+
+// test container debugging
+
+#include <string>
+#include <vector>
+
+#include "test_macros.h"
+#include "check_assertion.h"
+#include "container_debug_tests.h"
+
+using namespace IteratorDebugChecks;
+
+typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>>  StringType;
+
+template <class Container = StringType, ContainerType CT = CT_String>
+struct StringContainerChecks : BasicContainerChecks<Container, CT> {
+  using Base = BasicContainerChecks<Container, CT_String>;
+  using value_type = typename Container::value_type;
+  using allocator_type = typename Container::allocator_type;
+  using iterator = typename Container::iterator;
+  using const_iterator = typename Container::const_iterator;
+
+  using Base::makeContainer;
+  using Base::makeValueType;
+
+public:
+  static void run() {
+    Base::run_iterator_tests();
+    Base::run_allocator_aware_tests();
+
+    for (int N : {3, 128}) {
+      FrontOnEmptyContainer(N);
+      BackOnEmptyContainer(N);
+      PopBack(N);
+    }
+  }
+
+private:
+  static void BackOnEmptyContainer(int N) {
+    // testing back on empty
+    Container C = makeContainer(N);
+    Container const& CC = C;
+    iterator it = --C.end();
+    (void)C.back();
+    (void)CC.back();
+    C.pop_back();
+    EXPECT_DEATH( C.erase(it) );
+    C.clear();
+    EXPECT_DEATH( C.back() );
+    EXPECT_DEATH( CC.back() );
+  }
+
+  static void FrontOnEmptyContainer(int N) {
+    // testing front on empty
+    Container C = makeContainer(N);
+    Container const& CC = C;
+    (void)C.front();
+    (void)CC.front();
+    C.clear();
+    EXPECT_DEATH( C.front() );
+    EXPECT_DEATH( CC.front() );
+  }
+
+  static void PopBack(int N) {
+    // testing pop_back() invalidation
+    Container C1 = makeContainer(N);
+    iterator it1 = C1.end();
+    --it1;
+    C1.pop_back();
+    EXPECT_DEATH( C1.erase(it1) );
+    C1.erase(C1.begin(), C1.end());
+    assert(C1.size() == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(C1.pop_back(), "string::pop_back(): string is already empty");
+  }
+};
+
+int main(int, char**)
+{
+  StringContainerChecks<>::run();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/containers/unord_containers.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/unord_containers.pass.cpp
new file mode 100644
index 0000000..19a2124
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/containers/unord_containers.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03, c++11, c++14
+
+// test container debugging
+
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <cassert>
+#include "check_assertion.h"
+#include "container_debug_tests.h"
+#include "test_macros.h"
+
+using namespace IteratorDebugChecks;
+
+template <class Container, ContainerType CT>
+struct UnorderedContainerChecks : BasicContainerChecks<Container, CT> {
+  using Base = BasicContainerChecks<Container, CT>;
+  using value_type = typename Container::value_type;
+  using iterator = typename Container::iterator;
+  using const_iterator = typename Container::const_iterator;
+  using traits = std::iterator_traits<iterator>;
+  using category = typename traits::iterator_category;
+
+  using Base::makeContainer;
+public:
+  static void run() {
+    Base::run();
+  }
+private:
+
+};
+
+int main(int, char**)
+{
+  using SetAlloc = test_allocator<int>;
+  using MapAlloc = test_allocator<std::pair<const int, int>>;
+  {
+    UnorderedContainerChecks<
+        std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, MapAlloc>,
+        CT_UnorderedMap>::run();
+    UnorderedContainerChecks<
+        std::unordered_set<int, std::hash<int>, std::equal_to<int>, SetAlloc>,
+        CT_UnorderedSet>::run();
+    UnorderedContainerChecks<
+        std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, MapAlloc>,
+        CT_UnorderedMultiMap>::run();
+    UnorderedContainerChecks<
+        std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, SetAlloc>,
+        CT_UnorderedMultiSet>::run();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/debug.assertions-enabled.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/debug.assertions-enabled.compile.pass.cpp
new file mode 100644
index 0000000..037805b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/debug.assertions-enabled.compile.pass.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test ensures that assertions are enabled by default when the debug mode is enabled.
+
+// REQUIRES: libcpp-has-debug-mode
+
+#include <version>
+
+#if !defined(_LIBCPP_ENABLE_ASSERTIONS) || _LIBCPP_ENABLE_ASSERTIONS == 0
+#   error "Assertions should be enabled automatically when the debug mode is enabled"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/debug/extern-templates.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/debug/extern-templates.sh.cpp
new file mode 100644
index 0000000..612da5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/debug/extern-templates.sh.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test checks that we retain extern template instantiation declarations
+// for members of <locale> even when the debug mode is enabled, which is
+// necessary for correctness. See https://llvm.org/D94718 for details.
+
+// UNSUPPORTED: !libcpp-has-debug-mode
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: cant-build-shared-library
+
+// This test relies on linking a shared library and then passing that shared
+// library as input when linking an executable; this is generally not supported
+// on Windows (GNU ld supports it, but MS link.exe and LLD don't) - one has to
+// use an import library instead. (Additionally, the test uses the -fPIC
+// option which clang doesn't accept on Windows.)
+// UNSUPPORTED: windows
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// RUN: %{cxx} %{flags} %{compile_flags} %s %{link_flags} -fPIC -DTU1 -fvisibility=hidden -shared -o %t.lib
+// RUN: cd %T && %{cxx} %{flags} %{compile_flags} %s ./%basename_t.tmp.lib %{link_flags} -DTU2 -fvisibility=hidden -o %t.exe
+// RUN: %{exec} %t.exe
+
+#include <cassert>
+#include <cstdio>
+#include <sstream>
+#include <string>
+
+std::string __attribute__((visibility("default"))) numToString(int x);
+
+#if defined(TU1)
+
+std::string numToString(int x) {
+  std::stringstream ss;
+  ss << x;
+  return ss.str();
+}
+
+#elif defined(TU2)
+
+int main(int, char**) {
+  std::string s = numToString(42);
+  assert(s == "42");
+
+  return 0;
+}
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp
new file mode 100644
index 0000000..cad0bd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X>
+// class auto_ptr;
+//
+//  In C++17, auto_ptr has been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
+//  is defined before including <memory>, then auto_ptr will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::auto_ptr<int> p;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.depr_in_cxx11.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.depr_in_cxx11.verify.cpp
new file mode 100644
index 0000000..9fc8306
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.depr_in_cxx11.verify.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+//
+// template <class X>
+// class auto_ptr;
+//
+// class auto_ptr<void>;
+//
+// template <class X>
+// class auto_ptr_ref;
+//
+// Deprecated in C++11
+
+// UNSUPPORTED: c++03
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
+
+#include <memory>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::auto_ptr<int> AP; // expected-warning {{'auto_ptr<int>' is deprecated}}
+    typedef std::auto_ptr<void> APV; // expected-warning {{'auto_ptr<void>' is deprecated}}
+    typedef std::auto_ptr_ref<int> APR; // expected-warning {{'auto_ptr_ref<int>' is deprecated}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/ciso646.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/ciso646.pass.cpp
new file mode 100644
index 0000000..7a83994
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/ciso646.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ciso646>
+
+#include <ciso646>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/complex.h.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/complex.h.pass.cpp
new file mode 100644
index 0000000..07529ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/complex.h.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex.h>
+
+#include <complex.h>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+    std::complex<double> d;
+    (void)d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/extern_c.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/extern_c.pass.cpp
new file mode 100644
index 0000000..a4a05e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/extern_c.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Sometimes C++'s <foo.h> headers get included within extern "C" contexts. This
+// is ill-formed (no diagnostic required), per [using.headers]p3, but we permit
+// it as an extension.
+
+#include <__config>
+
+extern "C" {
+#include <assert.h>
+// complex.h is not supported in extern "C".
+#include <ctype.h>
+#include <errno.h>
+#include <fenv.h>
+#include <float.h>
+#include <inttypes.h>
+#include <iso646.h>
+#include <limits.h>
+#ifndef _LIBCPP_HAS_NO_LOCALIZATION
+#   include <locale.h>
+#endif
+#include <math.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdalign.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+// tgmath.h is not supported in extern "C".
+#include <time.h>
+// FIXME: #include <uchar.h>
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+#   include <wchar.h>
+#   include <wctype.h>
+#endif
+}
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/fenv.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/fenv.pass.cpp
new file mode 100644
index 0000000..a7cdb1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/fenv.pass.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fenv.h>
+
+#include <fenv.h>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/locale_h.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/locale_h.pass.cpp
new file mode 100644
index 0000000..7246861
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/locale_h.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <locale.h>
+
+#include <locale.h>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/math_h.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/math_h.compile.pass.cpp
new file mode 100644
index 0000000..045745b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/math_h.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Code on Windows expects to be able to do:
+//
+//  #define _USE_MATH_DEFINES
+//  #include <math.h>
+//
+// and receive the definitions of mathematical constants, even if <math.h>
+// has previously been included. Make sure that works.
+//
+
+#ifdef _MSC_VER
+#   include <math.h>
+#   define _USE_MATH_DEFINES
+#   include <math.h>
+
+#   ifndef M_PI
+#       error M_PI not defined
+#   endif
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/no_fgetpos_fsetpos.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/no_fgetpos_fsetpos.verify.cpp
new file mode 100644
index 0000000..1aaf953
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/no_fgetpos_fsetpos.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <cstdio>
+
+using U = decltype(::fgetpos);
+using V = decltype(::fsetpos);
+#ifdef _LIBCPP_HAS_NO_FGETPOS_FSETPOS
+// expected-error@-3 {{no member named 'fgetpos' in the global namespace}}
+// expected-error@-3 {{no member named 'fsetpos' in the global namespace}}
+#else
+// expected-no-diagnostics
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/stdint_h.std_types_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/stdint_h.std_types_t.compile.pass.cpp
new file mode 100644
index 0000000..3485ce7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/stdint_h.std_types_t.compile.pass.cpp
@@ -0,0 +1,263 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// AIX system headers need <stdint.h> to be re-enterable when macro _STD_TYPES_T
+// is defined. This test case checks that after defining _STD_TYPES_T, including
+// <stdint.h>, and undefining _STD_TYPES_T, <stdint.h> can be re-entered to get
+// to macros like UINT32_MAX.
+//
+// https://reviews.llvm.org/D59253
+
+#define _STD_TYPES_T
+#   include <stdint.h>
+#undef _STD_TYPES_T
+#include <stdint.h>
+
+#ifndef INT8_MIN
+#error INT8_MIN not defined
+#endif
+
+#ifndef INT16_MIN
+#error INT16_MIN not defined
+#endif
+
+#ifndef INT32_MIN
+#error INT32_MIN not defined
+#endif
+
+#ifndef INT64_MIN
+#error INT64_MIN not defined
+#endif
+
+#ifndef INT8_MAX
+#error INT8_MAX not defined
+#endif
+
+#ifndef INT16_MAX
+#error INT16_MAX not defined
+#endif
+
+#ifndef INT32_MAX
+#error INT32_MAX not defined
+#endif
+
+#ifndef INT64_MAX
+#error INT64_MAX not defined
+#endif
+
+#ifndef UINT8_MAX
+#error UINT8_MAX not defined
+#endif
+
+#ifndef UINT16_MAX
+#error UINT16_MAX not defined
+#endif
+
+#ifndef UINT32_MAX
+#error UINT32_MAX not defined
+#endif
+
+#ifndef UINT64_MAX
+#error UINT64_MAX not defined
+#endif
+
+#ifndef INT_LEAST8_MIN
+#error INT_LEAST8_MIN not defined
+#endif
+
+#ifndef INT_LEAST16_MIN
+#error INT_LEAST16_MIN not defined
+#endif
+
+#ifndef INT_LEAST32_MIN
+#error INT_LEAST32_MIN not defined
+#endif
+
+#ifndef INT_LEAST64_MIN
+#error INT_LEAST64_MIN not defined
+#endif
+
+#ifndef INT_LEAST8_MAX
+#error INT_LEAST8_MAX not defined
+#endif
+
+#ifndef INT_LEAST16_MAX
+#error INT_LEAST16_MAX not defined
+#endif
+
+#ifndef INT_LEAST32_MAX
+#error INT_LEAST32_MAX not defined
+#endif
+
+#ifndef INT_LEAST64_MAX
+#error INT_LEAST64_MAX not defined
+#endif
+
+#ifndef UINT_LEAST8_MAX
+#error UINT_LEAST8_MAX not defined
+#endif
+
+#ifndef UINT_LEAST16_MAX
+#error UINT_LEAST16_MAX not defined
+#endif
+
+#ifndef UINT_LEAST32_MAX
+#error UINT_LEAST32_MAX not defined
+#endif
+
+#ifndef UINT_LEAST64_MAX
+#error UINT_LEAST64_MAX not defined
+#endif
+
+#ifndef INT_FAST8_MIN
+#error INT_FAST8_MIN not defined
+#endif
+
+#ifndef INT_FAST16_MIN
+#error INT_FAST16_MIN not defined
+#endif
+
+#ifndef INT_FAST32_MIN
+#error INT_FAST32_MIN not defined
+#endif
+
+#ifndef INT_FAST64_MIN
+#error INT_FAST64_MIN not defined
+#endif
+
+#ifndef INT_FAST8_MAX
+#error INT_FAST8_MAX not defined
+#endif
+
+#ifndef INT_FAST16_MAX
+#error INT_FAST16_MAX not defined
+#endif
+
+#ifndef INT_FAST32_MAX
+#error INT_FAST32_MAX not defined
+#endif
+
+#ifndef INT_FAST64_MAX
+#error INT_FAST64_MAX not defined
+#endif
+
+#ifndef UINT_FAST8_MAX
+#error UINT_FAST8_MAX not defined
+#endif
+
+#ifndef UINT_FAST16_MAX
+#error UINT_FAST16_MAX not defined
+#endif
+
+#ifndef UINT_FAST32_MAX
+#error UINT_FAST32_MAX not defined
+#endif
+
+#ifndef UINT_FAST64_MAX
+#error UINT_FAST64_MAX not defined
+#endif
+
+#ifndef INTPTR_MIN
+#error INTPTR_MIN not defined
+#endif
+
+#ifndef INTPTR_MAX
+#error INTPTR_MAX not defined
+#endif
+
+#ifndef UINTPTR_MAX
+#error UINTPTR_MAX not defined
+#endif
+
+#ifndef INTMAX_MIN
+#error INTMAX_MIN not defined
+#endif
+
+#ifndef INTMAX_MAX
+#error INTMAX_MAX not defined
+#endif
+
+#ifndef UINTMAX_MAX
+#error UINTMAX_MAX not defined
+#endif
+
+#ifndef PTRDIFF_MIN
+#error PTRDIFF_MIN not defined
+#endif
+
+#ifndef PTRDIFF_MAX
+#error PTRDIFF_MAX not defined
+#endif
+
+#ifndef SIG_ATOMIC_MIN
+#error SIG_ATOMIC_MIN not defined
+#endif
+
+#ifndef SIG_ATOMIC_MAX
+#error SIG_ATOMIC_MAX not defined
+#endif
+
+#ifndef SIZE_MAX
+#error SIZE_MAX not defined
+#endif
+
+#ifndef WCHAR_MIN
+#error WCHAR_MIN not defined
+#endif
+
+#ifndef WCHAR_MAX
+#error WCHAR_MAX not defined
+#endif
+
+#ifndef WINT_MIN
+#error WINT_MIN not defined
+#endif
+
+#ifndef WINT_MAX
+#error WINT_MAX not defined
+#endif
+
+#ifndef INT8_C
+#error INT8_C not defined
+#endif
+
+#ifndef INT16_C
+#error INT16_C not defined
+#endif
+
+#ifndef INT32_C
+#error INT32_C not defined
+#endif
+
+#ifndef INT64_C
+#error INT64_C not defined
+#endif
+
+#ifndef UINT8_C
+#error UINT8_C not defined
+#endif
+
+#ifndef UINT16_C
+#error UINT16_C not defined
+#endif
+
+#ifndef UINT32_C
+#error UINT32_C not defined
+#endif
+
+#ifndef UINT64_C
+#error UINT64_C not defined
+#endif
+
+#ifndef INTMAX_C
+#error INTMAX_C not defined
+#endif
+
+#ifndef UINTMAX_C
+#error UINTMAX_C not defined
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/stdint_h.xopen_source.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/stdint_h.xopen_source.compile.pass.cpp
new file mode 100644
index 0000000..688bab4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/stdint_h.xopen_source.compile.pass.cpp
@@ -0,0 +1,260 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that limits macros are available when <stdint.h> is included
+// with or without macro _XOPEN_SOURCE=700.
+//
+// https://reviews.llvm.org/D59253
+
+// ADDITIONAL_COMPILE_FLAGS: -D_XOPEN_SOURCE=700
+
+#include <stdint.h>
+
+#ifndef INT8_MIN
+#error INT8_MIN not defined
+#endif
+
+#ifndef INT16_MIN
+#error INT16_MIN not defined
+#endif
+
+#ifndef INT32_MIN
+#error INT32_MIN not defined
+#endif
+
+#ifndef INT64_MIN
+#error INT64_MIN not defined
+#endif
+
+#ifndef INT8_MAX
+#error INT8_MAX not defined
+#endif
+
+#ifndef INT16_MAX
+#error INT16_MAX not defined
+#endif
+
+#ifndef INT32_MAX
+#error INT32_MAX not defined
+#endif
+
+#ifndef INT64_MAX
+#error INT64_MAX not defined
+#endif
+
+#ifndef UINT8_MAX
+#error UINT8_MAX not defined
+#endif
+
+#ifndef UINT16_MAX
+#error UINT16_MAX not defined
+#endif
+
+#ifndef UINT32_MAX
+#error UINT32_MAX not defined
+#endif
+
+#ifndef UINT64_MAX
+#error UINT64_MAX not defined
+#endif
+
+#ifndef INT_LEAST8_MIN
+#error INT_LEAST8_MIN not defined
+#endif
+
+#ifndef INT_LEAST16_MIN
+#error INT_LEAST16_MIN not defined
+#endif
+
+#ifndef INT_LEAST32_MIN
+#error INT_LEAST32_MIN not defined
+#endif
+
+#ifndef INT_LEAST64_MIN
+#error INT_LEAST64_MIN not defined
+#endif
+
+#ifndef INT_LEAST8_MAX
+#error INT_LEAST8_MAX not defined
+#endif
+
+#ifndef INT_LEAST16_MAX
+#error INT_LEAST16_MAX not defined
+#endif
+
+#ifndef INT_LEAST32_MAX
+#error INT_LEAST32_MAX not defined
+#endif
+
+#ifndef INT_LEAST64_MAX
+#error INT_LEAST64_MAX not defined
+#endif
+
+#ifndef UINT_LEAST8_MAX
+#error UINT_LEAST8_MAX not defined
+#endif
+
+#ifndef UINT_LEAST16_MAX
+#error UINT_LEAST16_MAX not defined
+#endif
+
+#ifndef UINT_LEAST32_MAX
+#error UINT_LEAST32_MAX not defined
+#endif
+
+#ifndef UINT_LEAST64_MAX
+#error UINT_LEAST64_MAX not defined
+#endif
+
+#ifndef INT_FAST8_MIN
+#error INT_FAST8_MIN not defined
+#endif
+
+#ifndef INT_FAST16_MIN
+#error INT_FAST16_MIN not defined
+#endif
+
+#ifndef INT_FAST32_MIN
+#error INT_FAST32_MIN not defined
+#endif
+
+#ifndef INT_FAST64_MIN
+#error INT_FAST64_MIN not defined
+#endif
+
+#ifndef INT_FAST8_MAX
+#error INT_FAST8_MAX not defined
+#endif
+
+#ifndef INT_FAST16_MAX
+#error INT_FAST16_MAX not defined
+#endif
+
+#ifndef INT_FAST32_MAX
+#error INT_FAST32_MAX not defined
+#endif
+
+#ifndef INT_FAST64_MAX
+#error INT_FAST64_MAX not defined
+#endif
+
+#ifndef UINT_FAST8_MAX
+#error UINT_FAST8_MAX not defined
+#endif
+
+#ifndef UINT_FAST16_MAX
+#error UINT_FAST16_MAX not defined
+#endif
+
+#ifndef UINT_FAST32_MAX
+#error UINT_FAST32_MAX not defined
+#endif
+
+#ifndef UINT_FAST64_MAX
+#error UINT_FAST64_MAX not defined
+#endif
+
+#ifndef INTPTR_MIN
+#error INTPTR_MIN not defined
+#endif
+
+#ifndef INTPTR_MAX
+#error INTPTR_MAX not defined
+#endif
+
+#ifndef UINTPTR_MAX
+#error UINTPTR_MAX not defined
+#endif
+
+#ifndef INTMAX_MIN
+#error INTMAX_MIN not defined
+#endif
+
+#ifndef INTMAX_MAX
+#error INTMAX_MAX not defined
+#endif
+
+#ifndef UINTMAX_MAX
+#error UINTMAX_MAX not defined
+#endif
+
+#ifndef PTRDIFF_MIN
+#error PTRDIFF_MIN not defined
+#endif
+
+#ifndef PTRDIFF_MAX
+#error PTRDIFF_MAX not defined
+#endif
+
+#ifndef SIG_ATOMIC_MIN
+#error SIG_ATOMIC_MIN not defined
+#endif
+
+#ifndef SIG_ATOMIC_MAX
+#error SIG_ATOMIC_MAX not defined
+#endif
+
+#ifndef SIZE_MAX
+#error SIZE_MAX not defined
+#endif
+
+#ifndef WCHAR_MIN
+#error WCHAR_MIN not defined
+#endif
+
+#ifndef WCHAR_MAX
+#error WCHAR_MAX not defined
+#endif
+
+#ifndef WINT_MIN
+#error WINT_MIN not defined
+#endif
+
+#ifndef WINT_MAX
+#error WINT_MAX not defined
+#endif
+
+#ifndef INT8_C
+#error INT8_C not defined
+#endif
+
+#ifndef INT16_C
+#error INT16_C not defined
+#endif
+
+#ifndef INT32_C
+#error INT32_C not defined
+#endif
+
+#ifndef INT64_C
+#error INT64_C not defined
+#endif
+
+#ifndef UINT8_C
+#error UINT8_C not defined
+#endif
+
+#ifndef UINT16_C
+#error UINT16_C not defined
+#endif
+
+#ifndef UINT32_C
+#error UINT32_C not defined
+#endif
+
+#ifndef UINT64_C
+#error UINT64_C not defined
+#endif
+
+#ifndef INTMAX_C
+#error INTMAX_C not defined
+#endif
+
+#ifndef UINTMAX_C
+#error UINTMAX_C not defined
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/tgmath_h.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/tgmath_h.pass.cpp
new file mode 100644
index 0000000..835e2f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.c.headers/tgmath_h.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tgmath.h>
+
+#include <tgmath.h>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+    std::complex<double> cd;
+    (void)cd;
+    double x = sin(1.0);
+    (void)x; // to placate scan-build
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.cxx2a.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.cxx2a.pass.cpp
new file mode 100644
index 0000000..59657ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.cxx2a.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// pointer address(reference x) const;
+// const_pointer address(const_reference x) const;
+
+//  In C++20, parts of std::allocator<T> have been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+//  is defined before including <memory>, then removed members will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void test_address()
+{
+    T* tp = new T();
+    const T* ctp = tp;
+    const std::allocator<T> a;
+    assert(a.address(*tp) == tp);
+    assert(a.address(*ctp) == tp);
+    delete tp;
+}
+
+struct A
+{
+    void operator&() const {}
+};
+
+int main(int, char**)
+{
+    test_address<int>();
+    test_address<A>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..4ccc3c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/address.depr_in_cxx17.verify.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// pointer address(reference x) const;
+// const_pointer address(const_reference x) const;
+
+// Deprecated in C++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+
+#include <memory>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  int x = 0;
+  std::allocator<int> a;
+
+  int* p = a.address(x); // expected-warning {{'address' is deprecated}}
+  (void)p;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.cxx2a.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.cxx2a.pass.cpp
new file mode 100644
index 0000000..cca8510
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.cxx2a.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// T* allocate(size_t n, const void* hint);
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+#include <cstddef>       // for std::max_align_t
+
+#include "test_macros.h"
+#include "count_new.h"
+
+
+#ifdef TEST_HAS_NO_ALIGNED_ALLOCATION
+static const bool UsingAlignedNew = false;
+#else
+static const bool UsingAlignedNew = true;
+#endif
+
+#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__
+static const size_t MaxAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__;
+#else
+static const size_t MaxAligned = std::alignment_of<std::max_align_t>::value;
+#endif
+
+static const size_t OverAligned = MaxAligned * 2;
+
+
+template <size_t Align>
+struct TEST_ALIGNAS(Align) AlignedType {
+  char data;
+  static int constructed;
+  AlignedType() { ++constructed; }
+  AlignedType(AlignedType const&) { ++constructed; }
+  ~AlignedType() { --constructed; }
+};
+template <size_t Align>
+int AlignedType<Align>::constructed = 0;
+
+
+template <size_t Align>
+void test_aligned() {
+  typedef AlignedType<Align> T;
+  T::constructed = 0;
+  globalMemCounter.reset();
+  std::allocator<T> a;
+  const bool IsOverAlignedType = Align > MaxAligned;
+  const bool ExpectAligned = IsOverAlignedType && UsingAlignedNew;
+  {
+    globalMemCounter.last_new_size = 0;
+    globalMemCounter.last_new_align = 0;
+    T* volatile ap2 = a.allocate(11, (const void*)5);
+    DoNotOptimize(ap2);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(globalMemCounter.checkNewCalledEq(1));
+    assert(globalMemCounter.checkAlignedNewCalledEq(ExpectAligned));
+    assert(globalMemCounter.checkLastNewSizeEq(11 * sizeof(T)));
+    assert(globalMemCounter.checkLastNewAlignEq(ExpectAligned ? Align : 0));
+    assert(T::constructed == 0);
+    globalMemCounter.last_delete_align = 0;
+    a.deallocate(ap2, 11);
+    DoNotOptimize(ap2);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(globalMemCounter.checkDeleteCalledEq(1));
+    assert(globalMemCounter.checkAlignedDeleteCalledEq(ExpectAligned));
+    assert(globalMemCounter.checkLastDeleteAlignEq(ExpectAligned ? Align : 0));
+    assert(T::constructed == 0);
+  }
+}
+
+int main(int, char**) {
+    test_aligned<1>();
+    test_aligned<2>();
+    test_aligned<4>();
+    test_aligned<8>();
+    test_aligned<16>();
+    test_aligned<MaxAligned>();
+    test_aligned<OverAligned>();
+    test_aligned<OverAligned * 2>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.cxx2a.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.cxx2a.verify.cpp
new file mode 100644
index 0000000..c122be5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.cxx2a.verify.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// allocator:
+// T* allocate(size_t n, const void* hint);
+
+//  In C++20, parts of std::allocator<T> have been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+//  is defined before including <memory>, then removed members will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::allocator<int> a;
+    a.allocate(3, nullptr); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..efb57b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/allocate.depr_in_cxx17.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// T* allocate(size_t n, const void* hint);
+
+// Deprecated in C++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+
+#include <memory>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::allocator<int> a;
+    TEST_IGNORE_NODISCARD a.allocate(3, nullptr); // expected-warning {{'allocate' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/construct.cxx2a.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/construct.cxx2a.pass.cpp
new file mode 100644
index 0000000..d3a7dad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/construct.cxx2a.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// template <class... Args> void construct(pointer p, Args&&... args);
+
+//  In C++20, parts of std::allocator<T> have been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+//  is defined before including <memory>, then removed members will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+int A_constructed = 0;
+
+struct A
+{
+    int data;
+    A() {++A_constructed;}
+
+    A(const A&) {++A_constructed;}
+
+    explicit A(int) {++A_constructed;}
+    A(int, int*) {++A_constructed;}
+
+    ~A() {--A_constructed;}
+};
+
+int move_only_constructed = 0;
+
+#if TEST_STD_VER >= 11
+class move_only
+{
+    move_only(const move_only&) = delete;
+    move_only& operator=(const move_only&)= delete;
+
+public:
+    move_only(move_only&&) {++move_only_constructed;}
+    move_only& operator=(move_only&&) {return *this;}
+
+    move_only() {++move_only_constructed;}
+    ~move_only() {--move_only_constructed;}
+
+public:
+    int data; // unused other than to make sizeof(move_only) == sizeof(int).
+              // but public to suppress "-Wunused-private-field"
+};
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+  globalMemCounter.reset();
+  {
+    std::allocator<A> a;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(A_constructed == 0);
+
+    globalMemCounter.last_new_size = 0;
+    A* ap = a.allocate(3);
+    DoNotOptimize(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(globalMemCounter.checkLastNewSizeEq(3 * sizeof(int)));
+    assert(A_constructed == 0);
+
+    a.construct(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 1);
+
+    a.destroy(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 0);
+
+    a.construct(ap, A());
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 1);
+
+    a.destroy(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 0);
+
+    a.construct(ap, 5);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 1);
+
+    a.destroy(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 0);
+
+    a.construct(ap, 5, (int*)0);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 1);
+
+    a.destroy(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(A_constructed == 0);
+
+    a.deallocate(ap, 3);
+    DoNotOptimize(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(A_constructed == 0);
+  }
+#if TEST_STD_VER >= 11
+    {
+    std::allocator<move_only> a;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(move_only_constructed == 0);
+
+    globalMemCounter.last_new_size = 0;
+    move_only* ap = a.allocate(3);
+    DoNotOptimize(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(globalMemCounter.checkLastNewSizeEq(3 * sizeof(int)));
+    assert(move_only_constructed == 0);
+
+    a.construct(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(move_only_constructed == 1);
+
+    a.destroy(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(move_only_constructed == 0);
+
+    a.construct(ap, move_only());
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(move_only_constructed == 1);
+
+    a.destroy(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(move_only_constructed == 0);
+
+    a.deallocate(ap, 3);
+    DoNotOptimize(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(move_only_constructed == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/max_size.cxx2a.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/max_size.cxx2a.pass.cpp
new file mode 100644
index 0000000..b075683
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator.members/max_size.cxx2a.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// size_type max_size() const throw();
+
+//  In C++20, parts of std::allocator<T> have been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+//  is defined before including <memory>, then removed members will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <limits>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+
+int new_called = 0;
+
+int main(int, char**)
+{
+    const std::allocator<int> a;
+    std::size_t M = a.max_size();
+    assert(M > 0xFFFF && M <= (std::numeric_limits<std::size_t>::max() / sizeof(int)));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator_types.cxx2a.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator_types.cxx2a.pass.cpp
new file mode 100644
index 0000000..a6134b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.default.allocator/allocator_types.cxx2a.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Check that the following types are provided regardless of the Standard when
+// we request them from libc++.
+
+// template <class T>
+// class allocator
+// {
+// public:
+//     typedef size_t                                size_type;
+//     typedef ptrdiff_t                             difference_type;
+//     typedef T*                                    pointer;
+//     typedef const T*                              const_pointer;
+//     typedef typename add_lvalue_reference<T>::type       reference;
+//     typedef typename add_lvalue_reference<const T>::type const_reference;
+//
+//     template <class U> struct rebind {typedef allocator<U> other;};
+// ...
+// };
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+#include <cstddef>
+
+template <class T>
+void test() {
+    static_assert((std::is_same<typename std::allocator<T>::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<typename std::allocator<T>::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename std::allocator<T>::pointer, T*>::value), "");
+    static_assert((std::is_same<typename std::allocator<T>::const_pointer, const T*>::value), "");
+    static_assert((std::is_same<typename std::allocator<T>::reference, T&>::value), "");
+    static_assert((std::is_same<typename std::allocator<T>::const_reference, const T&>::value), "");
+    static_assert((std::is_same<typename std::allocator<T>::template rebind<int>::other,
+                                std::allocator<int> >::value), "");
+}
+
+int main(int, char**) {
+    test<char>();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.func.adaptor.typedefs/typedefs.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.func.adaptor.typedefs/typedefs.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..422f405
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.func.adaptor.typedefs/typedefs.depr_in_cxx17.verify.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <optional>
+#include <utility>
+#include "test_macros.h"
+
+void test_functional()
+{
+    {
+        using T = std::plus<int>;
+        T::result_type a;          // expected-warning {{is deprecated}}
+        T::first_argument_type b;  // expected-warning {{is deprecated}}
+        T::second_argument_type c; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+        (void)c;
+    }
+    {
+        using T = std::less<int>;
+        T::result_type a;          // expected-warning {{is deprecated}}
+        T::first_argument_type b;  // expected-warning {{is deprecated}}
+        T::second_argument_type c; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+        (void)c;
+    }
+    {
+        using T = std::logical_not<int>;
+        T::result_type a;    // expected-warning {{is deprecated}}
+        T::argument_type b;  // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+    }
+}
+
+void test_owner_less()
+{
+    {
+        using T = std::owner_less<std::shared_ptr<int>>;
+        T::result_type a;          // expected-warning {{is deprecated}}
+        T::first_argument_type b;  // expected-warning {{is deprecated}}
+        T::second_argument_type c; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+        (void)c;
+    }
+    {
+        using T = std::owner_less<std::weak_ptr<int>>;
+        T::result_type a;          // expected-warning {{is deprecated}}
+        T::first_argument_type b;  // expected-warning {{is deprecated}}
+        T::second_argument_type c; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+        (void)c;
+    }
+}
+
+void test_hash()
+{
+    {
+        using T = std::hash<int>;
+        T::result_type a;   // expected-warning {{is deprecated}}
+        T::argument_type b; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+    }
+    {
+        using T = std::hash<std::shared_ptr<int>>;
+        T::result_type a;   // expected-warning {{is deprecated}}
+        T::argument_type b; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+    }
+    {
+        using T = std::hash<std::unique_ptr<int>>;
+        T::result_type a;   // expected-warning {{is deprecated}}
+        T::argument_type b; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+    }
+    {
+        using T = std::hash<std::optional<int>>;
+        T::result_type a;   // expected-warning {{is deprecated}}
+        T::argument_type b; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+    }
+}
+
+void test_map()
+{
+    {
+        using T = std::map<int, int>::value_compare;
+        T::result_type a;          // expected-warning {{is deprecated}}
+        T::first_argument_type b;  // expected-warning {{is deprecated}}
+        T::second_argument_type c; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+        (void)c;
+    }
+    {
+        using T = std::multimap<int, int>::value_compare;
+        T::result_type a;          // expected-warning {{is deprecated}}
+        T::first_argument_type b;  // expected-warning {{is deprecated}}
+        T::second_argument_type c; // expected-warning {{is deprecated}}
+        (void)a;
+        (void)b;
+        (void)c;
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.function.objects/adaptors.depr_in_cxx11.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.function.objects/adaptors.depr_in_cxx11.verify.cpp
new file mode 100644
index 0000000..2b3a05e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.function.objects/adaptors.depr_in_cxx11.verify.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+
+#include <functional>
+#include <cassert>
+#include "test_macros.h"
+
+int identity(int v) { return v; }
+int sum(int a, int b) { return a + b; }
+
+struct Foo {
+    int const_zero() const { return 0; }
+    int const_identity(int v) const { return v; }
+    int zero() { return 0; }
+    int identity(int v) { return v; }
+};
+
+int main(int, char**)
+{
+    typedef std::pointer_to_unary_function<int, int> PUF; // expected-warning {{'pointer_to_unary_function<int, int>' is deprecated}}
+    typedef std::pointer_to_binary_function<int, int, int> PBF; // expected-warning {{'pointer_to_binary_function<int, int, int>' is deprecated}}
+    std::ptr_fun<int, int>(identity); // expected-warning {{'ptr_fun<int, int>' is deprecated}}
+    std::ptr_fun<int, int, int>(sum); // expected-warning {{'ptr_fun<int, int, int>' is deprecated}}
+
+    typedef std::mem_fun_t<int, Foo> MFT0; // expected-warning {{'mem_fun_t<int, Foo>' is deprecated}}
+    typedef std::mem_fun1_t<int, Foo, int> MFT1; // expected-warning {{'mem_fun1_t<int, Foo, int>' is deprecated}}
+    typedef std::const_mem_fun_t<int, Foo> CMFT0; // expected-warning {{'const_mem_fun_t<int, Foo>' is deprecated}}
+    typedef std::const_mem_fun1_t<int, Foo, int> CMFT1; // expected-warning {{'const_mem_fun1_t<int, Foo, int>' is deprecated}}
+    std::mem_fun<int, Foo>(&Foo::zero); // expected-warning {{'mem_fun<int, Foo>' is deprecated}}
+    std::mem_fun<int, Foo, int>(&Foo::identity); // expected-warning {{'mem_fun<int, Foo, int>' is deprecated}}
+    std::mem_fun<int, Foo>(&Foo::const_zero); // expected-warning {{'mem_fun<int, Foo>' is deprecated}}
+    std::mem_fun<int, Foo, int>(&Foo::const_identity); // expected-warning {{'mem_fun<int, Foo, int>' is deprecated}}
+
+    typedef std::mem_fun_ref_t<int, Foo> MFR0; // expected-warning {{'mem_fun_ref_t<int, Foo>' is deprecated}}
+    typedef std::mem_fun1_ref_t<int, Foo, int> MFR1; // expected-warning {{'mem_fun1_ref_t<int, Foo, int>' is deprecated}}
+    typedef std::const_mem_fun_ref_t<int, Foo> CMFR0; // expected-warning {{'const_mem_fun_ref_t<int, Foo>' is deprecated}}
+    typedef std::const_mem_fun1_ref_t<int, Foo, int> CMFR1; // expected-warning {{'const_mem_fun1_ref_t<int, Foo, int>' is deprecated}}
+    std::mem_fun_ref<int, Foo>(&Foo::zero); // expected-warning {{'mem_fun_ref<int, Foo>' is deprecated}}
+    std::mem_fun_ref<int, Foo, int>(&Foo::identity); // expected-warning {{'mem_fun_ref<int, Foo, int>' is deprecated}}
+    std::mem_fun_ref<int, Foo>(&Foo::const_zero); // expected-warning {{'mem_fun_ref<int, Foo>' is deprecated}}
+    std::mem_fun_ref<int, Foo, int>(&Foo::const_identity); // expected-warning {{'mem_fun_ref<int, Foo, int>' is deprecated}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.function.objects/depr.adaptors.cxx1z.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.function.objects/depr.adaptors.cxx1z.pass.cpp
new file mode 100644
index 0000000..7583c36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.function.objects/depr.adaptors.cxx1z.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+
+//  In C++17, the function adapters mem_fun/mem_fun_ref, etc have been removed.
+//  However, for backwards compatibility, if _LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+//  is defined before including <functional>, then they will be restored.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int identity(int v) { return v; }
+int sum(int a, int b) { return a + b; }
+
+struct Foo {
+  int zero() { return 0; }
+  int zero_const() const { return 1; }
+
+  int identity(int v) const { return v; }
+  int sum(int a, int b) const { return a + b; }
+};
+
+int main(int, char**)
+{
+    typedef std::pointer_to_unary_function<int, int> PUF;
+    typedef std::pointer_to_binary_function<int, int, int> PBF;
+
+    static_assert(
+        (std::is_same<PUF, decltype((std::ptr_fun<int, int>(identity)))>::value),
+        "");
+    static_assert(
+        (std::is_same<PBF, decltype((std::ptr_fun<int, int, int>(sum)))>::value),
+        "");
+
+    assert((std::ptr_fun<int, int>(identity)(4) == 4));
+    assert((std::ptr_fun<int, int, int>(sum)(4, 5) == 9));
+
+    Foo f;
+    assert((std::mem_fn(&Foo::identity)(f, 5) == 5));
+    assert((std::mem_fn(&Foo::sum)(f, 5, 6) == 11));
+
+    typedef std::mem_fun_ref_t<int, Foo> MFR;
+    typedef std::const_mem_fun_ref_t<int, Foo> CMFR;
+
+    static_assert(
+        (std::is_same<MFR, decltype((std::mem_fun_ref(&Foo::zero)))>::value), "");
+    static_assert((std::is_same<CMFR, decltype((std::mem_fun_ref(
+                                          &Foo::zero_const)))>::value),
+                  "");
+
+    assert((std::mem_fun_ref(&Foo::zero)(f) == 0));
+    assert((std::mem_fun_ref(&Foo::identity)(f, 5) == 5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/depr.str.strstreams/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.str.strstreams/version.pass.cpp
new file mode 100644
index 0000000..f57921f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/depr.str.strstreams/version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <strstream>
+
+#include <strstream>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/enable_removed_cpp17_features.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/enable_removed_cpp17_features.pass.cpp
new file mode 100644
index 0000000..3ae848f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/enable_removed_cpp17_features.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that defining _LIBCPP_ENABLE_CXX17_REMOVED_FEATURES correctly defines
+// _LIBCPP_ENABLE_CXX17_REMOVED_FOO for each individual component macro.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_FEATURES
+
+#include <__config>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
+#error _LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS must be defined
+#endif
+
+#ifndef _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
+#error _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR must be defined
+#endif
+
+int main(int, char**) {
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/get_unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/get_unexpected.pass.cpp
new file mode 100644
index 0000000..e4533a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/get_unexpected.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test get_unexpected
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
+
+#include <exception>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+void f3()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+
+    std::unexpected_handler old = std::get_unexpected();
+    // verify there is a previous unexpected handler
+    assert(old);
+    std::set_unexpected(f1);
+    assert(std::get_unexpected() == f1);
+    // verify f1 was replace with f2
+    std::set_unexpected(f2);
+    assert(std::get_unexpected() == f2);
+    // verify calling original unexpected handler calls terminate
+    std::set_terminate(f3);
+    (*old)();
+    assert(0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/set_unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/set_unexpected.pass.cpp
new file mode 100644
index 0000000..f428790
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/set_unexpected.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test set_unexpected
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
+
+#include <exception>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+void f3()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+    std::unexpected_handler old = std::set_unexpected(f1);
+    // verify there is a previous unexpected handler
+    assert(old);
+    // verify f1 was replace with f2
+    assert(std::set_unexpected(f2) == f1);
+    // verify calling original unexpected handler calls terminate
+    std::set_terminate(f3);
+    (*old)();
+    assert(0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/unexpected.pass.cpp
new file mode 100644
index 0000000..6ab1147
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/unexpected.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test unexpected
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+void fexit()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+    std::set_unexpected(fexit);
+    std::unexpected();
+    assert(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/unexpected_disabled_cpp17.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/unexpected_disabled_cpp17.fail.cpp
new file mode 100644
index 0000000..299cb12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/depr/exception.unexpected/unexpected_disabled_cpp17.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// test unexpected
+
+#include <exception>
+
+void f() {}
+
+int main(int, char**) {
+  using T = std::unexpected_handler; // expected-error {{no type named 'unexpected_handler' in namespace 'std'}}
+  std::unexpected(); // expected-error {{no member named 'unexpected' in namespace 'std'}}
+  std::get_unexpected(); // expected-error {{no member named 'get_unexpected' in namespace 'std'}}
+  std::set_unexpected(f); // expected-error {{no type named 'set_unexpected' in namespace 'std'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/assertions/version_cassert.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/assertions/version_cassert.pass.cpp
new file mode 100644
index 0000000..af076cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/assertions/version_cassert.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cassert>
+
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/errno/version_cerrno.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/errno/version_cerrno.pass.cpp
new file mode 100644
index 0000000..ca708e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/errno/version_cerrno.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cerrno>
+
+#include <cerrno>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/math_nodiscard_extensions.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/math_nodiscard_extensions.verify.cpp
new file mode 100644
index 0000000..a3db61b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/math_nodiscard_extensions.verify.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// We don't control the implementation of the math.h functions on windows
+// UNSUPPORTED: windows
+
+// check that const cmath functions are declared [[nodiscard]]
+
+#include <cmath>
+
+void test() {
+  std::signbit(0.f);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::signbit(0.);              // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::signbit(0.l);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::signbit(0);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::signbit(0U);              // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::fpclassify(0.f);          // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fpclassify(0.);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fpclassify(0.l);          // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fpclassify(0);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fpclassify(0U);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isfinite(0.f);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isfinite(0.);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isfinite(0.l);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isfinite(0);              // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isfinite(0U);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isinf(0.f);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isinf(0.);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isinf(0.l);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isinf(0);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isinf(0U);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isnan(0.f);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnan(0.);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnan(0.l);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnan(0);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnan(0U);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isnormal(0.f);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnormal(0.);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnormal(0.l);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnormal(0);              // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isnormal(0U);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isgreater(0.f, 0.f);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreater(0., 0.);        // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreater(0.l, 0.l);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreater(0, 0);          // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreater(0U, 0U);        // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isgreaterequal(0.f, 0.f); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreaterequal(0., 0.);   // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreaterequal(0.l, 0.l); // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreaterequal(0, 0);     // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isgreaterequal(0U, 0U);   // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isless(0.f, 0.f);         // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isless(0., 0.);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isless(0.l, 0.l);         // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isless(0, 0);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isless(0U, 0U);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::islessequal(0.f, 0.f);    // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessequal(0., 0.);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessequal(0.l, 0.l);    // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessequal(0, 0);        // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessequal(0U, 0U);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::islessgreater(0.f, 0.f);  // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessgreater(0., 0.);    // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessgreater(0.l, 0.l);  // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessgreater(0, 0);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::islessgreater(0U, 0U);    // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::isunordered(0.f, 0.f);    // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isunordered(0., 0.);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isunordered(0.l, 0.l);    // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isunordered(0, 0);        // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::isunordered(0U, 0U);      // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::ceil(0.f);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::ceil(0.);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::ceil(0.l);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::ceil(0);                  // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::ceil(0U);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::fabs(0.f);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fabs(0.);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fabs(0.l);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fabs(0);                  // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fabs(0U);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::floor(0.f);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::floor(0.);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::floor(0.l);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::floor(0);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::floor(0U);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::cbrt(0.f);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::cbrt(0.);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::cbrt(0.l);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::cbrt(0);                  // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::cbrt(0U);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::copysign(0.f, 0.f);       // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::copysign(0., 0.);         // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::copysign(0.l, 0.l);       // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::copysign(0, 0);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::copysign(0U, 0U);         // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::fmax(0.f, 0.f);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmax(0., 0.);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmax(0.l, 0.l);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmax(0, 0);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmax(0U, 0U);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::fmin(0.f, 0.f);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmin(0., 0.);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmin(0.l, 0.l);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmin(0, 0);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::fmin(0U, 0U);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::nearbyint(0.f);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::nearbyint(0.);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::nearbyint(0.l);           // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::nearbyint(0);             // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::nearbyint(0U);            // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::rint(0.f);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::rint(0.);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::rint(0.l);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::rint(0);                  // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::rint(0U);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::round(0.f);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::round(0.);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::round(0.l);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::round(0);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::round(0U);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+
+  std::trunc(0.f);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::trunc(0.);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::trunc(0.l);               // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::trunc(0);                 // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+  std::trunc(0U);                // expected-warning-re {{ignoring return value of function declared with {{.*}} attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard.pass.cpp
new file mode 100644
index 0000000..6db535c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that _LIBCPP_NODISCARD_EXT is not defined to [[nodiscard]] when
+// _LIBCPP_DISABLE_NODISCARD_EXT is defined
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_NODISCARD_EXT
+
+#include <__config>
+
+_LIBCPP_NODISCARD_EXT int foo() { return 42; }
+
+int main(int, char**) {
+  foo(); // OK.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_aftercxx17.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_aftercxx17.verify.cpp
new file mode 100644
index 0000000..9e3796c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_aftercxx17.verify.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that _LIBCPP_NODISCARD_AFTER_CXX17 works
+// #define _LIBCPP_NODISCARD_AFTER_CXX17 [[nodiscard]]
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: (c++11 || c++14 || c++17) && !stdlib=libc++
+
+#include <__config>
+
+_LIBCPP_NODISCARD_AFTER_CXX17 int foo() { return 6; }
+
+int main(int, char**)
+{
+    foo(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_extensions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_extensions.compile.pass.cpp
new file mode 100644
index 0000000..e0d457b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_extensions.compile.pass.cpp
@@ -0,0 +1,194 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that entities declared [[nodiscard]] as at extension by libc++, are
+// not declared as such when _LIBCPP_DISABLE_NODISCARD_EXT is specified.
+
+// All entities to which libc++ applies [[nodiscard]] as an extension should
+// be tested here and in nodiscard_extensions.verify.cpp. They should also
+// be listed in `UsingLibcxx.rst` in the documentation for the extension.
+
+// Disable any builtin recognition of std::* in the compiler, that might also
+// trigger -Wunused-value warnings.
+// ADDITIONAL_COMPILE_FLAGS: -fno-builtin
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_DISABLE_NODISCARD_EXT
+
+#include <algorithm>
+#include <bit> // bit_cast
+#include <cstddef> // to_integer
+#include <functional> // identity
+#include <iterator>
+#include <memory>
+#include <utility> // to_underlying
+
+#include "test_macros.h"
+
+struct P {
+  bool operator()(int) const { return false; }
+};
+
+void test_algorithms() {
+  int arr[1] = { 1 };
+
+  std::adjacent_find(std::begin(arr), std::end(arr));
+  std::adjacent_find(std::begin(arr), std::end(arr), std::greater<int>());
+  std::all_of(std::begin(arr), std::end(arr), P());
+  std::any_of(std::begin(arr), std::end(arr), P());
+  std::binary_search(std::begin(arr), std::end(arr), 1);
+  std::binary_search(std::begin(arr), std::end(arr), 1, std::greater<int>());
+#if TEST_STD_VER >= 17
+  std::clamp(2, 1, 3);
+  std::clamp(2, 3, 1, std::greater<int>());
+#endif
+  std::count_if(std::begin(arr), std::end(arr), P());
+  std::count(std::begin(arr), std::end(arr), 1);
+  std::equal_range(std::begin(arr), std::end(arr), 1);
+  std::equal_range(std::begin(arr), std::end(arr), 1, std::greater<int>());
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr));
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr),
+             std::greater<int>());
+#if TEST_STD_VER >= 14
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+             std::greater<int>());
+#endif
+  std::find_end(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+  std::find_end(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+                std::greater<int>());
+  std::find_first_of(std::begin(arr), std::end(arr), std::begin(arr),
+                     std::end(arr));
+  std::find_first_of(std::begin(arr), std::end(arr), std::begin(arr),
+                     std::end(arr), std::greater<int>());
+  std::find_if_not(std::begin(arr), std::end(arr), P());
+  std::find_if(std::begin(arr), std::end(arr), P());
+  std::find(std::begin(arr), std::end(arr), 1);
+  std::get_temporary_buffer<int>(1);
+  std::includes(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+  std::includes(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+                std::greater<int>());
+  std::is_heap_until(std::begin(arr), std::end(arr));
+  std::is_heap_until(std::begin(arr), std::end(arr), std::greater<int>());
+  std::is_heap(std::begin(arr), std::end(arr));
+  std::is_heap(std::begin(arr), std::end(arr), std::greater<int>());
+  std::is_partitioned(std::begin(arr), std::end(arr), P());
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr));
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr),
+                      std::greater<int>());
+#if TEST_STD_VER >= 14
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr),
+                      std::end(arr));
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr),
+                      std::end(arr), std::greater<int>());
+#endif
+  std::is_sorted_until(std::begin(arr), std::end(arr));
+  std::is_sorted_until(std::begin(arr), std::end(arr), std::greater<int>());
+  std::is_sorted(std::begin(arr), std::end(arr));
+  std::is_sorted(std::begin(arr), std::end(arr), std::greater<int>());
+  std::lexicographical_compare(std::begin(arr), std::end(arr), std::begin(arr),
+                               std::end(arr));
+  std::lexicographical_compare(std::begin(arr), std::end(arr), std::begin(arr),
+                               std::end(arr), std::greater<int>());
+  std::lower_bound(std::begin(arr), std::end(arr), 1);
+  std::lower_bound(std::begin(arr), std::end(arr), 1, std::greater<int>());
+  std::max_element(std::begin(arr), std::end(arr));
+  std::max_element(std::begin(arr), std::end(arr), std::greater<int>());
+  std::max(1, 2);
+  std::max(1, 2, std::greater<int>());
+#if TEST_STD_VER >= 11
+  std::max({1, 2, 3});
+  std::max({1, 2, 3}, std::greater<int>());
+#endif
+  std::min_element(std::begin(arr), std::end(arr));
+  std::min_element(std::begin(arr), std::end(arr), std::greater<int>());
+  std::min(1, 2);
+  std::min(1, 2, std::greater<int>());
+#if TEST_STD_VER >= 11
+  std::min({1, 2, 3});
+  std::min({1, 2, 3}, std::greater<int>());
+#endif
+  std::minmax_element(std::begin(arr), std::end(arr));
+  std::minmax_element(std::begin(arr), std::end(arr), std::greater<int>());
+  std::minmax(1, 2);
+  std::minmax(1, 2, std::greater<int>());
+#if TEST_STD_VER >= 11
+  std::minmax({1, 2, 3});
+  std::minmax({1, 2, 3}, std::greater<int>());
+#endif
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr));
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr),
+                std::greater<int>());
+#if TEST_STD_VER >= 14
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+                std::greater<int>());
+#endif
+  std::none_of(std::begin(arr), std::end(arr), P());
+  std::remove_if(std::begin(arr), std::end(arr), P());
+  std::remove(std::begin(arr), std::end(arr), 1);
+  std::search_n(std::begin(arr), std::end(arr), 1, 1);
+  std::search_n(std::begin(arr), std::end(arr), 1, 1, std::greater<int>());
+  std::search(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+  std::search(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+              std::greater<int>());
+#if TEST_STD_VER >= 17
+  std::search(std::begin(arr), std::end(arr),
+              std::default_searcher(std::begin(arr), std::end(arr)));
+#endif
+  std::unique(std::begin(arr), std::end(arr));
+  std::unique(std::begin(arr), std::end(arr), std::greater<int>());
+  std::upper_bound(std::begin(arr), std::end(arr), 1);
+  std::upper_bound(std::begin(arr), std::end(arr), 1, std::greater<int>());
+}
+
+template<class LV, class RV>
+void test_template_cast_wrappers(LV&& lv, RV&& rv) {
+  std::forward<LV>(lv);
+  std::forward<RV>(rv);
+  std::move(lv);
+  std::move(rv);
+  std::move_if_noexcept(lv);
+  std::move_if_noexcept(rv);
+
+#if TEST_STD_VER >= 17
+  std::as_const(lv);
+  std::as_const(rv);
+#endif
+
+#if TEST_STD_VER >= 20
+  std::identity()(lv);
+  std::identity()(rv);
+#endif
+}
+
+void test_nontemplate_cast_wrappers()
+{
+#if TEST_STD_VER > 14
+  std::byte b{42};
+  std::to_integer<int>(b);
+#endif
+
+#if TEST_STD_VER > 17
+  std::bit_cast<unsigned int>(42);
+#endif
+
+#if TEST_STD_VER > 20
+  enum E { Apple, Orange } e = Apple;
+  std::to_underlying(e);
+#endif
+}
+
+int main(int, char**) {
+  test_algorithms();
+
+  int i = 42;
+  test_template_cast_wrappers(i, std::move(i));
+  test_nontemplate_cast_wrappers();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_extensions.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_extensions.verify.cpp
new file mode 100644
index 0000000..e816624
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/nodiscard_extensions.verify.cpp
@@ -0,0 +1,352 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Test that entities declared [[nodiscard]] as an extension by libc++, are
+// actually declared as such when _LIBCPP_DISABLE_NODISCARD_EXT is not specified.
+
+// All entities to which libc++ applies [[nodiscard]] as an extension should
+// be tested here and in nodiscard_extensions.pass.cpp. They should also
+// be listed in `UsingLibcxx.rst` in the documentation for the extension.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <algorithm>
+#include <bit> // bit_cast
+#include <cstddef> // to_integer
+#include <functional> // identity
+#include <iterator>
+#include <memory>
+#include <utility> // to_underlying
+
+#include "test_macros.h"
+
+struct P {
+  bool operator()(int) const { return false; }
+};
+
+void test_algorithms() {
+  int arr[1] = { 1 };
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::adjacent_find(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::adjacent_find(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::all_of(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::any_of(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::binary_search(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::binary_search(std::begin(arr), std::end(arr), 1, std::greater<int>());
+
+#if TEST_STD_VER >= 17
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::clamp(2, 1, 3);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::clamp(2, 1, 3, std::greater<int>());
+#endif
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::count_if(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::count(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::equal_range(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::equal_range(std::begin(arr), std::end(arr), 1, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr),
+             std::greater<int>());
+
+#if TEST_STD_VER >= 14
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::equal(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+             std::greater<int>());
+#endif
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find_end(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find_end(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+                std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find_first_of(std::begin(arr), std::end(arr), std::begin(arr),
+                     std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find_first_of(std::begin(arr), std::end(arr), std::begin(arr),
+                     std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find_if_not(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find_if(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::find(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::get_temporary_buffer<int>(1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::includes(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::includes(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+                std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_heap_until(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_heap_until(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_heap(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_heap(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_partitioned(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr),
+                      std::greater<int>());
+
+#if TEST_STD_VER >= 14
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr),
+                      std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_permutation(std::begin(arr), std::end(arr), std::begin(arr),
+                      std::end(arr), std::greater<int>());
+#endif
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_sorted_until(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_sorted_until(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_sorted(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::is_sorted(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::lexicographical_compare(std::begin(arr), std::end(arr), std::begin(arr),
+                               std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::lexicographical_compare(std::begin(arr), std::end(arr), std::begin(arr),
+                               std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::lower_bound(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::lower_bound(std::begin(arr), std::end(arr), 1, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::max_element(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::max_element(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::max(1, 2);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::max(1, 2, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::max({1, 2, 3});
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::max({1, 2, 3}, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::min_element(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::min_element(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::min(1, 2);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::min(1, 2, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::min({1, 2, 3});
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::min({1, 2, 3}, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::minmax_element(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::minmax_element(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::minmax(1, 2);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::minmax(1, 2, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::minmax({1, 2, 3});
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::minmax({1, 2, 3}, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr),
+                std::greater<int>());
+
+#if TEST_STD_VER >= 14
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::mismatch(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+                std::greater<int>());
+#endif
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::none_of(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::remove_if(std::begin(arr), std::end(arr), P());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::remove(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::search_n(std::begin(arr), std::end(arr), 1, 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::search_n(std::begin(arr), std::end(arr), 1, 1, std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::search(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::search(std::begin(arr), std::end(arr), std::begin(arr), std::end(arr),
+              std::greater<int>());
+
+#if TEST_STD_VER >= 17
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::search(std::begin(arr), std::end(arr),
+              std::default_searcher(std::begin(arr), std::end(arr)));
+#endif
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::unique(std::begin(arr), std::end(arr));
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::unique(std::begin(arr), std::end(arr), std::greater<int>());
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::upper_bound(std::begin(arr), std::end(arr), 1);
+
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::upper_bound(std::begin(arr), std::end(arr), 1, std::greater<int>());
+}
+
+template<class LV, class RV>
+void test_template_cast_wrappers(LV&& lv, RV&& rv) {
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::forward<LV>(lv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::forward<RV>(rv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::move(lv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::move(rv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::move_if_noexcept(lv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::move_if_noexcept(rv);
+
+#if TEST_STD_VER >= 17
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::as_const(lv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::as_const(rv);
+#endif
+
+#if TEST_STD_VER >= 20
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::identity()(lv);
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::identity()(rv);
+#endif
+}
+
+void test_nontemplate_cast_wrappers()
+{
+#if TEST_STD_VER > 14
+  std::byte b{42};
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::to_integer<int>(b);
+#endif
+
+#if TEST_STD_VER > 17
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::bit_cast<unsigned int>(42);
+#endif
+
+#if TEST_STD_VER > 20
+  enum E { Apple, Orange } e = Apple;
+  // expected-warning@+1 {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::to_underlying(e);
+#endif
+}
+
+int main(int, char**) {
+  test_algorithms();
+
+  int i = 42;
+  test_template_cast_wrappers(i, std::move(i));
+  test_nontemplate_cast_wrappers();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/ranges.nodiscard_extensions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/ranges.nodiscard_extensions.compile.pass.cpp
new file mode 100644
index 0000000..1577601
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/ranges.nodiscard_extensions.compile.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that ranges algorithms aren't marked [[nodiscard]] when
+// _LIBCPP_DISBALE_NODISCARD_EXT is defined
+
+// UNSUPPORTED: c++03, c++11, c++14 ,c++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_NODISCARD_EXT
+
+#include <algorithm>
+
+void test() {
+  int range[1];
+  int* iter = range;
+  auto pred = [](auto...) { return true; };
+  std::ranges::adjacent_find(range);
+  std::ranges::adjacent_find(iter, iter);
+  std::ranges::all_of(range, pred);
+  std::ranges::all_of(iter, iter, pred);
+  std::ranges::any_of(range, pred);
+  std::ranges::any_of(iter, iter, pred);
+  std::ranges::binary_search(range, 1);
+  std::ranges::binary_search(iter, iter, 1);
+  std::ranges::clamp(1, 2, 3);
+  std::ranges::count_if(range, pred);
+  std::ranges::count_if(iter, iter, pred);
+  std::ranges::count(range, 1);
+  std::ranges::count(iter, iter, 1);
+  std::ranges::equal_range(range, 1);
+  std::ranges::equal_range(iter, iter, 1);
+  std::ranges::equal(range, range);
+  std::ranges::equal(iter, iter, iter, iter);
+  std::ranges::find_end(range, range);
+  std::ranges::find_end(iter, iter, iter, iter);
+  std::ranges::find_first_of(range, range);
+  std::ranges::find_first_of(iter, iter, iter, iter);
+  std::ranges::find_if_not(range, pred);
+  std::ranges::find_if_not(iter, iter, pred);
+  std::ranges::find_if(range, pred);
+  std::ranges::find_if(iter, iter, pred);
+  std::ranges::find(range, 1);
+  std::ranges::find(iter, iter, 1);
+  std::ranges::includes(range, range);
+  std::ranges::includes(iter, iter, iter, iter);
+  std::ranges::is_heap_until(range);
+  std::ranges::is_heap_until(iter, iter);
+  std::ranges::is_heap(range);
+  std::ranges::is_heap(iter, iter);
+  std::ranges::is_partitioned(range, pred);
+  std::ranges::is_partitioned(iter, iter, pred);
+  std::ranges::is_permutation(range, range);
+  std::ranges::is_permutation(iter, iter, iter, iter);
+  std::ranges::is_sorted_until(range);
+  std::ranges::is_sorted_until(iter, iter);
+  std::ranges::is_sorted(range);
+  std::ranges::is_sorted(iter, iter);
+  std::ranges::lexicographical_compare(range, range);
+  std::ranges::lexicographical_compare(iter, iter, iter, iter);
+  std::ranges::lower_bound(range, 1);
+  std::ranges::lower_bound(iter, iter, 1);
+  std::ranges::max_element(range);
+  std::ranges::max_element(iter, iter);
+  std::ranges::max(1, 2);
+  std::ranges::max({1, 2, 3});
+  std::ranges::max(range);
+  std::ranges::minmax_element(range);
+  std::ranges::minmax_element(iter, iter);
+  std::ranges::minmax(1, 2);
+  std::ranges::minmax({1, 2, 3});
+  std::ranges::minmax(range);
+  std::ranges::mismatch(range, range);
+  std::ranges::mismatch(iter, iter, iter, iter);
+  std::ranges::none_of(range, pred);
+  std::ranges::none_of(iter, iter, pred);
+  std::ranges::remove_if(range, pred);
+  std::ranges::remove_if(iter, iter, pred);
+  std::ranges::remove(range, 1);
+  std::ranges::remove(iter, iter, 1);
+  std::ranges::search_n(range, 1, 1);
+  std::ranges::search_n(iter, iter, 1, 1);
+  std::ranges::search(range, range);
+  std::ranges::search(iter, iter, iter, iter);
+  std::ranges::unique(range);
+  std::ranges::unique(iter, iter);
+  std::ranges::upper_bound(range, 1);
+  std::ranges::upper_bound(iter, iter, 1);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/ranges.nodiscard_extensions.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/ranges.nodiscard_extensions.verify.cpp
new file mode 100644
index 0000000..77ac5f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/ranges.nodiscard_extensions.verify.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that ranges algorithms are marked [[nodiscard]] as a conforming extension
+
+// UNSUPPORTED: c++03, c++11, c++14 ,c++17
+
+#include <algorithm>
+
+void test() {
+  int range[1];
+  int* iter = range;
+  auto pred = [](auto...) { return true; };
+  std::ranges::adjacent_find(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::adjacent_find(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::all_of(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::all_of(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::any_of(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::any_of(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::binary_search(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::binary_search(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::clamp(1, 2, 3); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::count_if(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::count_if(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::count(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::count(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::equal_range(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::equal_range(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::equal(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::equal(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_end(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_end(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_first_of(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_first_of(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_if_not(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_if_not(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_if(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find_if(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::find(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::includes(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::includes(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_heap_until(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_heap_until(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_heap(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_heap(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_partitioned(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_partitioned(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_permutation(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_permutation(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_sorted_until(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_sorted_until(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_sorted(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::is_sorted(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::lexicographical_compare(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::lexicographical_compare(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::lower_bound(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::lower_bound(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::max_element(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::max_element(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::max(1, 2); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::max({1, 2, 3}); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::max(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::minmax_element(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::minmax_element(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::minmax(1, 2); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::minmax({1, 2, 3}); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::minmax(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::mismatch(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::mismatch(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::none_of(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::none_of(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::remove_if(range, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::remove_if(iter, iter, pred); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::remove(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::remove(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::search_n(range, 1, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::search_n(iter, iter, 1, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::search(range, range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::search(iter, iter, iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::unique(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::unique(iter, iter); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::upper_bound(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::ranges::upper_bound(iter, iter, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/std.exceptions/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/std.exceptions/version.pass.cpp
new file mode 100644
index 0000000..91d91b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/std.exceptions/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stdexcept>
+
+#include <stdexcept>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/syserr/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/syserr/version.pass.cpp
new file mode 100644
index 0000000..29e6095
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/syserr/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+#include <system_error>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/diagnostics/view_adaptors.nodiscard_extensions.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/view_adaptors.nodiscard_extensions.verify.cpp
new file mode 100644
index 0000000..6cd9739
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/diagnostics/view_adaptors.nodiscard_extensions.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that view adaptors are marked [[nodiscard]] as a conforming extension
+
+// UNSUPPORTED: c++03, c++11, c++14 ,c++17, c++20
+
+#include <ranges>
+#include <vector>
+
+void func() {
+  std::vector<int> range;
+
+  auto rvalue_view = std::views::as_rvalue(range);
+  std::views::as_rvalue(range);         // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::views::as_rvalue(rvalue_view);   // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/double_include.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/double_include.sh.cpp
new file mode 100644
index 0000000..ea9fc7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/double_include.sh.cpp
@@ -0,0 +1,281 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that we can include each header in two TU's and link them together.
+
+// RUN: %{cxx} -c %s -o %t.first.o %{flags} %{compile_flags}
+// RUN: %{cxx} -c %s -o %t.second.o -DWITH_MAIN %{flags} %{compile_flags}
+// RUN: %{cxx} -o %t.exe %t.first.o %t.second.o %{flags} %{link_flags}
+// RUN: %{run}
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+/*
+BEGIN-SCRIPT
+
+for header in public_headers:
+  print("{}#{}include <{}>{}".format(
+    '#if ' + header_restrictions[header] + '\n' if header in header_restrictions else '',
+    3 * ' ' if header in header_restrictions else '',
+    header,
+    '\n#endif' if header in header_restrictions else ''
+  ))
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+#include <algorithm>
+#include <any>
+#include <array>
+#include <atomic>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <barrier>
+#endif
+#include <bit>
+#include <bitset>
+#include <cassert>
+#include <ccomplex>
+#include <cctype>
+#include <cerrno>
+#include <cfenv>
+#include <cfloat>
+#include <charconv>
+#include <chrono>
+#include <cinttypes>
+#include <ciso646>
+#include <climits>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <clocale>
+#endif
+#include <cmath>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <codecvt>
+#endif
+#include <compare>
+#include <complex>
+#include <complex.h>
+#include <concepts>
+#include <condition_variable>
+#if (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#   include <coroutine>
+#endif
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstdbool>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctgmath>
+#include <ctime>
+#include <ctype.h>
+#include <cuchar>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwchar>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwctype>
+#endif
+#include <deque>
+#include <errno.h>
+#include <exception>
+#include <execution>
+#include <expected>
+#include <fenv.h>
+#if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#   include <filesystem>
+#endif
+#include <float.h>
+#include <format>
+#include <forward_list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#   include <fstream>
+#endif
+#include <functional>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <future>
+#endif
+#include <initializer_list>
+#include <inttypes.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iomanip>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ios>
+#endif
+#include <iosfwd>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iostream>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <istream>
+#endif
+#include <iterator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <latch>
+#endif
+#include <limits>
+#include <limits.h>
+#include <list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale.h>
+#endif
+#include <map>
+#include <math.h>
+#include <memory>
+#include <memory_resource>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <mutex>
+#endif
+#include <new>
+#include <numbers>
+#include <numeric>
+#include <optional>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ostream>
+#endif
+#include <queue>
+#include <random>
+#include <ranges>
+#include <ratio>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <regex>
+#endif
+#include <scoped_allocator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <semaphore>
+#endif
+#include <set>
+#include <setjmp.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <shared_mutex>
+#endif
+#include <source_location>
+#include <span>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <sstream>
+#endif
+#include <stack>
+#if __cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <stdatomic.h>
+#endif
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdexcept>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <streambuf>
+#endif
+#include <string>
+#include <string.h>
+#include <string_view>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <strstream>
+#endif
+#include <system_error>
+#include <tgmath.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <thread>
+#endif
+#include <tuple>
+#include <type_traits>
+#include <typeindex>
+#include <typeinfo>
+#include <uchar.h>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <valarray>
+#include <variant>
+#include <vector>
+#include <version>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wchar.h>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wctype.h>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/algorithm>
+#endif
+#if __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#   include <experimental/coroutine>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/deque>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/forward_list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/functional>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/iterator>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/memory_resource>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/propagate_const>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#   include <experimental/regex>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/simd>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/string>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/type_traits>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/utility>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/vector>
+#endif
+#include <ext/hash_map>
+#include <ext/hash_set>
+// GENERATED-MARKER
+
+#if defined(WITH_MAIN)
+int main(int, char**) { return 0; }
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/algorithms/header.algorithm.synop/includes.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/algorithms/header.algorithm.synop/includes.pass.cpp
new file mode 100644
index 0000000..ba207e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/algorithms/header.algorithm.synop/includes.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <experimental/algorithm>
+
+#include <experimental/algorithm>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_ALGORITHM
+#  error "<experimental/algorithm> must include <algorithm>"
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/algorithms/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/algorithms/version.pass.cpp
new file mode 100644
index 0000000..0a96474
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/algorithms/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <experimental/algorithm>
+
+#include <experimental/algorithm>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#  error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp
new file mode 100644
index 0000000..5996e0c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/fexperimental-library.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test ensures that passing `-fexperimental-library` results in experimental
+// library features being enabled.
+
+// GCC does not support the -fexperimental-library flag
+// UNSUPPORTED: gcc
+
+// Clang does not support the -fexperimental-library flag before LLVM 15.0
+// UNSUPPORTED: clang-14
+
+// AppleClang does not support the -fexperimental-library flag yet
+// UNSUPPORTED: apple-clang-14.0
+
+// Clang on AIX currently pretends that it is Clang 15, even though it is not (as of writing
+// this, LLVM 15 hasn't even been branched yet).
+// UNSUPPORTED: clang-15 && buildhost=aix
+
+// ADDITIONAL_COMPILE_FLAGS: -fexperimental-library
+
+#include <version>
+
+#ifdef _LIBCPP_HAS_NO_INCOMPLETE_FORMAT
+#   error "-fexperimental-library should enable <format>"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/language.support/support.coroutines/dialect_support.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/language.support/support.coroutines/dialect_support.pass.cpp
new file mode 100644
index 0000000..c237ca0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/language.support/support.coroutines/dialect_support.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: fcoroutines-ts
+// ADDITIONAL_COMPILE_FLAGS: -fcoroutines-ts -Wno-coroutine
+
+// A simple "breathing" test that checks that <experimental/coroutine>
+// can be parsed and used in all dialects, including C++03 in order to match
+// Clang's behavior.
+
+#include <experimental/coroutine>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental::coroutines_v1;
+
+coro::suspend_always sa;
+coro::suspend_never sn;
+
+struct MyFuture {
+  struct promise_type {
+    typedef coro::coroutine_handle<promise_type> HandleT;
+    coro::suspend_never initial_suspend() { return sn; }
+    coro::suspend_always final_suspend() TEST_NOEXCEPT { return sa; }
+    coro::suspend_never yield_value(int) { return sn; }
+    MyFuture get_return_object() {
+      MyFuture f(HandleT::from_promise(*this));
+      return f;
+    }
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+  typedef promise_type::HandleT HandleT;
+  MyFuture() : p() {}
+  MyFuture(HandleT h) : p(h) {}
+
+  coro::coroutine_handle<promise_type> p;
+};
+
+MyFuture test_coro() {
+  co_await sn;
+  co_yield 42;
+  co_return;
+}
+
+int main(int, char**)
+{
+  MyFuture f = test_coro();
+  while (!f.p.done())
+    f.p.resume();
+  f.p.destroy();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/language.support/support.coroutines/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/language.support/support.coroutines/version.pass.cpp
new file mode 100644
index 0000000..46cf345
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/language.support/support.coroutines/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// REQUIRES: fcoroutines-ts
+// ADDITIONAL_COMPILE_FLAGS: -fcoroutines-ts
+
+#include <experimental/coroutine>
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION must be defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/experimental/lit.local.cfg
new file mode 100644
index 0000000..5e2c632
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/lit.local.cfg
@@ -0,0 +1,3 @@
+# Disable all of the experimental tests if the correct feature is not available.
+if 'c++experimental' not in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/assert.deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/assert.deallocate.pass.cpp
new file mode 100644
index 0000000..5c717f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/assert.deallocate.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::deallocate(T*, size_t size)
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "test_memory_resource.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**) {
+    using Alloc = ex::polymorphic_allocator<int>;
+    using Traits = std::allocator_traits<Alloc>;
+    NullResource R;
+    Alloc a(&R);
+    const std::size_t maxSize = Traits::max_size(a);
+
+    a.deallocate(nullptr, maxSize); // no assertion
+    TEST_LIBCPP_ASSERT_FAILURE(a.deallocate(nullptr, maxSize + 1), "deallocate called for size which exceeds max_size()");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp
new file mode 100644
index 0000000..728762c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<T1, T2>*, piecewise_construct_t
+//                                          tuple<Args1...> x, tuple<Args2...>)
+
+// The stardard specifiers a tranformation to uses-allocator construction as
+// follows:
+//  - If uses_allocator_v<T1,memory_resource*> is false and
+//      is_constructible_v<T,Args1...> is true, then xprime is x.
+//  - Otherwise, if uses_allocator_v<T1,memory_resource*> is true and
+//      is_constructible_v<T1,allocator_arg_t,memory_resource*,Args1...> is true,
+//      then xprime is
+//      tuple_cat(make_tuple(allocator_arg, this->resource()), std::move(x)).
+//  - Otherwise, if uses_allocator_v<T1,memory_resource*> is true and
+//      is_constructible_v<T1,Args1...,memory_resource*> is true, then xprime is
+//      tuple_cat(std::move(x), make_tuple(this->resource())).
+//  - Otherwise the program is ill formed.
+//
+// The use of "xprime = tuple_cat(..., std::move(x), ...)" causes all of the
+// objects in 'x' to be copied into 'xprime'. If 'x' contains any types which
+// are stored by value this causes an unessary copy to occur. To prevent this
+//  libc++ changes this call into
+// "xprime = forward_as_tuple(..., std::get<Idx>(std::move(x))..., ...)".
+// 'xprime' contains references to the values in 'x' instead of copying them.
+
+// This test checks the number of copies incurred to the elements in
+// 'tuple<Args1...>' and 'tuple<Args2...>'.
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+template <class T>
+struct TestHarness {
+    TestResource R;
+    ex::memory_resource * M = &R;
+    ex::polymorphic_allocator<T> A = M;
+    bool constructed = false;
+    T * ptr;
+
+    TestHarness() : ptr(A.allocate(1)) {}
+
+    template <class ...Args>
+    void construct(Args&&... args) {
+        A.construct(ptr, std::forward<Args>(args)...);
+        constructed = true;
+    }
+
+    ~TestHarness() {
+        if (constructed) A.destroy(ptr);
+        A.deallocate(ptr, 1);
+    }
+};
+
+struct CountCopies {
+  int count;
+  CountCopies() : count(0) {}
+  CountCopies(CountCopies const& o) : count(o.count + 1) {}
+};
+
+struct CountCopiesAllocV1 {
+  typedef ex::polymorphic_allocator<char> allocator_type;
+  ex::memory_resource *alloc;
+  int count;
+  CountCopiesAllocV1() : alloc(nullptr), count(0) {}
+  CountCopiesAllocV1(std::allocator_arg_t, allocator_type const& a,
+                     CountCopiesAllocV1 const& o) : alloc(a.resource()), count(o.count + 1)
+  {}
+
+  CountCopiesAllocV1(CountCopiesAllocV1 const& o) : count(o.count + 1) {}
+};
+
+
+struct CountCopiesAllocV2 {
+  typedef ex::polymorphic_allocator<char> allocator_type;
+  ex::memory_resource *alloc;
+  int count;
+  CountCopiesAllocV2() : alloc(nullptr), count(0) {}
+  CountCopiesAllocV2(CountCopiesAllocV2 const& o, allocator_type const& a)
+    : alloc(a.resource()), count(o.count + 1)
+  { }
+
+  CountCopiesAllocV2(CountCopiesAllocV2 const& o) : count(o.count + 1) {}
+};
+
+
+int main(int, char**)
+{
+    {
+        using T = CountCopies;
+        using U = CountCopiesAllocV1;
+        using P = std::pair<T, U>;
+
+        std::tuple<T> t1;
+        std::tuple<U> t2;
+
+        TestHarness<P> h;
+        h.construct(std::piecewise_construct, t1, t2);
+        P const& p = *h.ptr;
+        assert(p.first.count == 2);
+        assert(p.second.count == 2);
+        assert(p.second.alloc == h.M);
+    }
+    {
+        using T = CountCopiesAllocV1;
+        using U = CountCopiesAllocV2;
+        using P = std::pair<T, U>;
+
+        std::tuple<T> t1;
+        std::tuple<U> t2;
+
+        TestHarness<P> h;
+        h.construct(std::piecewise_construct, std::move(t1), std::move(t2));
+        P const& p = *h.ptr;
+        assert(p.first.count == 2);
+        assert(p.first.alloc == h.M);
+        assert(p.second.count == 2);
+        assert(p.second.alloc == h.M);
+    }
+    {
+        using T = CountCopiesAllocV2;
+        using U = CountCopiesAllocV1;
+        using P = std::pair<T, U>;
+
+        std::tuple<T> t1;
+        std::tuple<U> t2;
+
+        TestHarness<P> h;
+        h.construct(std::piecewise_construct, std::move(t1), std::move(t2));
+        P const& p = *h.ptr;
+        assert(p.first.count == 2);
+        assert(p.first.alloc == h.M);
+        assert(p.second.count == 2);
+        assert(p.second.alloc == h.M);
+    }
+    {
+        using T = CountCopiesAllocV2;
+        using U = CountCopies;
+        using P = std::pair<T, U>;
+
+        std::tuple<T> t1;
+        std::tuple<U> t2;
+
+        TestHarness<P> h;
+        h.construct(std::piecewise_construct, t1, t2);
+        P const& p = *h.ptr;
+        assert(p.first.count == 2);
+        assert(p.first.alloc == h.M);
+        assert(p.second.count == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/assert.deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/assert.deallocate.pass.cpp
new file mode 100644
index 0000000..5305042
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/assert.deallocate.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::deallocate(T*, size_t size)
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "test_memory_resource.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**) {
+    using Alloc = NullAllocator<char>;
+
+    AllocController P;
+    ex::resource_adaptor<Alloc> r(Alloc{P});
+    ex::memory_resource & m1 = r;
+
+    std::size_t maxSize = std::numeric_limits<std::size_t>::max()
+                            - alignof(std::max_align_t);
+
+    m1.deallocate(nullptr, maxSize); // no assertion
+    TEST_LIBCPP_ASSERT_FAILURE(m1.deallocate(nullptr, maxSize + 1), "do_deallocate called for size which exceeds the maximum allocation size");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_deque_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_deque_libcpp_version.pass.cpp
new file mode 100644
index 0000000..e3eeb93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_deque_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/deque>
+
+#include <experimental/deque>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_forward_list_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_forward_list_libcpp_version.pass.cpp
new file mode 100644
index 0000000..6144ff4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_forward_list_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/forward_list>
+
+#include <experimental/forward_list>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_list_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_list_libcpp_version.pass.cpp
new file mode 100644
index 0000000..67227e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_list_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/list>
+
+#include <experimental/list>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_map_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_map_libcpp_version.pass.cpp
new file mode 100644
index 0000000..3c51b90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_map_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/map>
+
+#include <experimental/map>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_regex_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_regex_libcpp_version.pass.cpp
new file mode 100644
index 0000000..7072603
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_regex_libcpp_version.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-localization
+
+// <experimental/regex>
+
+#include <experimental/regex>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_set_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_set_libcpp_version.pass.cpp
new file mode 100644
index 0000000..a439efe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_set_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/set>
+
+#include <experimental/set>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_string_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_string_libcpp_version.pass.cpp
new file mode 100644
index 0000000..1f03276
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_string_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/string>
+
+#include <experimental/string>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_unordered_map_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_unordered_map_libcpp_version.pass.cpp
new file mode 100644
index 0000000..1c0ef48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_unordered_map_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/unordered_map>
+
+#include <experimental/unordered_map>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_unordered_set_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_unordered_set_libcpp_version.pass.cpp
new file mode 100644
index 0000000..4cb2fcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_unordered_set_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/unordered_set>
+
+#include <experimental/unordered_set>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_vector_libcpp_version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_vector_libcpp_version.pass.cpp
new file mode 100644
index 0000000..7c9c943
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.aliases/header_vector_libcpp_version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/vector>
+
+#include <experimental/vector>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error header must provide _LIBCPP_VERSION
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.global/global_memory_resource_lifetime.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.global/global_memory_resource_lifetime.pass.cpp
new file mode 100644
index 0000000..b6945bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.global/global_memory_resource_lifetime.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// memory_resource * new_delete_resource()
+
+// The lifetime of the value returned by 'new_delete_resource()' should
+// never end, even very late into program termination. This test constructs
+// attempts to use 'new_delete_resource()' very late in program termination
+// to detect lifetime issues.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+struct POSType {
+  ex::memory_resource* res = nullptr;
+  void* ptr = nullptr;
+  int n = 0;
+  POSType() {}
+  POSType(ex::memory_resource* r, void* p, int s) : res(r), ptr(p), n(s) {}
+  ~POSType() {
+      if (ptr) {
+          if (!res) res = ex::get_default_resource();
+          res->deallocate(ptr, n);
+      }
+  }
+};
+
+void swap(POSType & L, POSType & R) {
+    std::swap(L.res, R.res);
+    std::swap(L.ptr, R.ptr);
+    std::swap(L.n, R.n);
+}
+
+POSType constructed_before_resources;
+POSType constructed_before_resources2;
+
+// Constructs resources
+ex::memory_resource* resource = ex::get_default_resource();
+
+POSType constructed_after_resources(resource, resource->allocate(1024), 1024);
+POSType constructed_after_resources2(nullptr, resource->allocate(1024), 1024);
+
+int main(int, char**)
+{
+    swap(constructed_after_resources, constructed_before_resources);
+    swap(constructed_before_resources2, constructed_after_resources2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.global/new_delete_resource_lifetime.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.global/new_delete_resource_lifetime.pass.cpp
new file mode 100644
index 0000000..c59ac64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.global/new_delete_resource_lifetime.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// memory_resource * new_delete_resource()
+
+// The lifetime of the value returned by 'new_delete_resource()' should
+// never end, even very late into program termination. This test constructs
+// attempts to use 'new_delete_resource()' very late in program termination
+// to detect lifetime issues.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+struct POSType {
+  ex::memory_resource* res = nullptr;
+  void* ptr = nullptr;
+  int n = 0;
+  POSType() {res = ex::new_delete_resource(); ptr = res->allocate(42); n = 42; }
+  POSType(ex::memory_resource* r, void* p, int s) : res(r), ptr(p), n(s) {}
+  ~POSType() { if (ptr) res->deallocate(ptr, n); }
+};
+
+void swap(POSType & L, POSType & R) {
+    std::swap(L.res, R.res);
+    std::swap(L.ptr, R.ptr);
+    std::swap(L.n, R.n);
+}
+
+POSType constructed_before_resources;
+
+// Constructs resources
+ex::memory_resource* resource = ex::new_delete_resource();
+
+POSType constructed_after_resources(resource, resource->allocate(1024), 1024);
+
+int main(int, char**)
+{
+    swap(constructed_after_resources, constructed_before_resources);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.synop/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.synop/version.pass.cpp
new file mode 100644
index 0000000..2ceed43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/experimental/memory/memory.resource.synop/version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/memory_resource>
+
+#include <experimental/memory_resource>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/extensions/hash/specializations.compile.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/extensions/hash/specializations.compile.fail.cpp
new file mode 100644
index 0000000..f81ec5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/extensions/hash/specializations.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <assert.h>
+#include <ext/hash_map>
+#include <string>
+
+int main(int, char**)
+{
+    assert(__gnu_cxx::hash<std::string>()(std::string()) == 0);  // error
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/extensions/hash/specializations.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/extensions/hash/specializations.pass.cpp
new file mode 100644
index 0000000..8e386ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/extensions/hash/specializations.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: modules-build
+
+// NOTE: Undefined __DEPRECATED to prevent this test from failing with -Werror
+#undef __DEPRECATED
+#include <assert.h>
+#include <ext/hash_map>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    char str[] = "test";
+    assert(__gnu_cxx::hash<const char *>()("test") ==
+           std::hash<std::string>()("test"));
+    assert(__gnu_cxx::hash<char *>()(str) == std::hash<std::string>()("test"));
+    assert(__gnu_cxx::hash<char>()(42) == 42);
+    assert(__gnu_cxx::hash<signed char>()(42) == 42);
+    assert(__gnu_cxx::hash<unsigned char>()(42) == 42);
+    assert(__gnu_cxx::hash<short>()(42) == 42);
+    assert(__gnu_cxx::hash<unsigned short>()(42) == 42);
+    assert(__gnu_cxx::hash<int>()(42) == 42);
+    assert(__gnu_cxx::hash<unsigned int>()(42) == 42);
+    assert(__gnu_cxx::hash<long>()(42) == 42);
+    assert(__gnu_cxx::hash<unsigned long>()(42) == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/extensions/hash_map/const_iterator.compile.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/extensions/hash_map/const_iterator.compile.fail.cpp
new file mode 100644
index 0000000..db09e40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/extensions/hash_map/const_iterator.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <ext/hash_map>
+
+int main(int, char**)
+{
+    __gnu_cxx::hash_map<int, int> m;
+    m[1] = 1;
+    const __gnu_cxx::hash_map<int, int> &cm = m;
+    cm.find(1)->second = 2;  // error
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/fuzz.h b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/fuzz.h
new file mode 100644
index 0000000..5e70d0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/fuzz.h
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_LIBCXX_FUZZING_FUZZ_H
+#define TEST_LIBCXX_FUZZING_FUZZ_H
+
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <cstring> // std::strlen
+#include <iterator>
+#include <type_traits>
+#include <utility> // std::swap
+
+
+// This is a struct we can use to test the stable_XXX algorithms.
+// Perform the operation on the key, then check the order of the payload.
+struct ByteWithPayload {
+  std::uint8_t key;
+  std::size_t payload;
+
+  ByteWithPayload(std::uint8_t k) : key(k), payload(0) { }
+  ByteWithPayload(std::uint8_t k, std::size_t p) : key(k), payload(p) { }
+
+  friend bool operator==(ByteWithPayload const& x, ByteWithPayload const& y) {
+    return x.key == y.key && x.payload == y.payload;
+  }
+
+  friend bool operator!=(ByteWithPayload const& x, ByteWithPayload const& y) {
+    return !(x == y);
+  }
+
+  struct key_less {
+    bool operator()(ByteWithPayload const& x, ByteWithPayload const& y) const
+    { return x.key < y.key; }
+  };
+
+  struct payload_less {
+    bool operator()(ByteWithPayload const& x, ByteWithPayload const& y) const
+    { return x.payload < y.payload; }
+  };
+
+  struct total_less {
+    bool operator()(ByteWithPayload const& x, ByteWithPayload const& y) const {
+      return x.key == y.key ? x.payload < y.payload : x.key < y.key;
+    }
+  };
+
+  friend void swap(ByteWithPayload& lhs, ByteWithPayload& rhs) {
+      std::swap(lhs.key, rhs.key);
+      std::swap(lhs.payload, rhs.payload);
+  }
+};
+
+// Faster version of std::is_permutation
+//
+// Builds a set of buckets for each of the key values, and sums all the payloads.
+// Not 100% perfect, but _way_ faster.
+template <typename Iter1, typename Iter2, typename = typename std::enable_if<
+  std::is_same<typename std::iterator_traits<Iter1>::value_type, ByteWithPayload>::value &&
+  std::is_same<typename std::iterator_traits<Iter2>::value_type, ByteWithPayload>::value
+>::type>
+bool fast_is_permutation(Iter1 first1, Iter1 last1, Iter2 first2) {
+  std::size_t xBuckets[256]  = {0};
+  std::size_t xPayloads[256] = {0};
+  std::size_t yBuckets[256]  = {0};
+  std::size_t yPayloads[256] = {0};
+
+  for (; first1 != last1; ++first1, ++first2) {
+    xBuckets[first1->key]++;
+    xPayloads[first1->key] += first1->payload;
+
+    yBuckets[first2->key]++;
+    yPayloads[first2->key] += first2->payload;
+  }
+
+  for (std::size_t i = 0; i < 256; ++i) {
+    if (xBuckets[i] != yBuckets[i])
+      return false;
+    if (xPayloads[i] != yPayloads[i])
+      return false;
+  }
+
+  return true;
+}
+
+template <typename Iter1, typename Iter2, typename = void, typename = typename std::enable_if<
+  std::is_same<typename std::iterator_traits<Iter1>::value_type, std::uint8_t>::value &&
+  std::is_same<typename std::iterator_traits<Iter2>::value_type, std::uint8_t>::value
+>::type>
+bool fast_is_permutation(Iter1 first1, Iter1 last1, Iter2 first2) {
+  std::size_t xBuckets[256] = {0};
+  std::size_t yBuckets[256] = {0};
+
+  for (; first1 != last1; ++first1, ++first2) {
+    xBuckets[*first1]++;
+    yBuckets[*first2]++;
+  }
+
+  for (std::size_t i = 0; i < 256; ++i)
+    if (xBuckets[i] != yBuckets[i])
+      return false;
+
+  return true;
+}
+
+// When running inside OSS-Fuzz, we link against a fuzzing library that defines
+// main() and calls LLVMFuzzerTestOneInput.
+//
+// Otherwise, when e.g. running the Lit tests, we define main() to run fuzzing
+// tests on a few inputs.
+#if !defined(LIBCPP_OSS_FUZZ)
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t*, std::size_t);
+
+int main(int, char**) {
+  const char* test_cases[] = {
+    "",
+    "s",
+    "bac",
+    "bacasf",
+    "lkajseravea",
+    "adsfkajdsfjkas;lnc441324513,34535r34525234",
+    "b*c",
+    "ba?sf",
+    "lka*ea",
+    "adsf*kas;lnc441[0-9]1r34525234"
+  };
+
+  for (const char* tc : test_cases) {
+    const std::size_t size = std::strlen(tc);
+    const std::uint8_t* data = reinterpret_cast<const std::uint8_t*>(tc);
+    int result = LLVMFuzzerTestOneInput(data, size);
+    assert(result == 0);
+  }
+
+  return 0;
+}
+#endif // !LIBCPP_OSS_FUZZ
+
+#endif // TEST_LIBCXX_FUZZING_FUZZ_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/make_heap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/make_heap.pass.cpp
new file mode 100644
index 0000000..ede82c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/make_heap.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    std::vector<std::uint8_t> working(data, data + size);
+    std::make_heap(working.begin(), working.end());
+
+    if (!std::is_heap(working.begin(), working.end()))
+        return 1;
+    if (!fast_is_permutation(data, data + size, working.cbegin()))
+        return 99;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/nth_element.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/nth_element.pass.cpp
new file mode 100644
index 0000000..5e491e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/nth_element.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+// Use the first element as a position into the data
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    if (size <= 1) return 0;
+    const size_t partition_point = data[0] % size;
+    std::vector<std::uint8_t> working(data + 1, data + size);
+    const auto partition_iter = working.begin() + partition_point;
+    std::nth_element(working.begin(), partition_iter, working.end());
+
+    // nth may be the end iterator, in this case nth_element has no effect.
+    if (partition_iter == working.end()) {
+        if (!std::equal(data + 1, data + size, working.begin()))
+            return 98;
+    }
+    else {
+        const std::uint8_t nth = *partition_iter;
+        if (!std::all_of(working.begin(), partition_iter, [=](std::uint8_t v) { return v <= nth; }))
+            return 1;
+        if (!std::all_of(partition_iter, working.end(),   [=](std::uint8_t v) { return v >= nth; }))
+            return 2;
+        if (!fast_is_permutation(data + 1, data + size, working.cbegin()))
+            return 99;
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partial_sort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partial_sort.pass.cpp
new file mode 100644
index 0000000..c179846
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partial_sort.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+// Use the first element as a position into the data
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    if (size <= 1)
+        return 0;
+    const std::size_t sort_point = data[0] % size;
+    std::vector<std::uint8_t> working(data + 1, data + size);
+    const auto sort_iter = working.begin() + sort_point;
+    std::partial_sort(working.begin(), sort_iter, working.end());
+
+    if (sort_iter != working.end()) {
+        const std::uint8_t nth = *std::min_element(sort_iter, working.end());
+        if (!std::all_of(working.begin(), sort_iter, [=](std::uint8_t v) { return v <= nth; }))
+            return 1;
+        if (!std::all_of(sort_iter, working.end(),   [=](std::uint8_t v) { return v >= nth; }))
+            return 2;
+    }
+    if (!std::is_sorted(working.begin(), sort_iter))
+        return 3;
+    if (!fast_is_permutation(data + 1, data + size, working.cbegin()))
+        return 99;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partial_sort_copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partial_sort_copy.pass.cpp
new file mode 100644
index 0000000..530ab0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partial_sort_copy.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+// Use the first element as a count
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    if (size <= 1)
+        return 0;
+    const std::size_t num_results = data[0] % size;
+    std::vector<std::uint8_t> results(num_results);
+    (void)std::partial_sort_copy(data + 1, data + size, results.begin(), results.end());
+
+    // The results have to be sorted
+    if (!std::is_sorted(results.begin(), results.end()))
+        return 1;
+    // All the values in results have to be in the original data
+    for (auto v: results)
+        if (std::find(data + 1, data + size, v) == data + size)
+            return 2;
+
+    // The things in results have to be the smallest N in the original data
+    std::vector<std::uint8_t> sorted(data + 1, data + size);
+    std::sort(sorted.begin(), sorted.end());
+    if (!std::equal(results.begin(), results.end(), sorted.begin()))
+        return 3;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partition.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partition.pass.cpp
new file mode 100644
index 0000000..203e45b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partition.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    auto is_even = [](auto x) { return x % 2 == 0; };
+    std::vector<std::uint8_t> working(data, data + size);
+    auto iter = std::partition(working.begin(), working.end(), is_even);
+
+    if (!std::all_of(working.begin(), iter, is_even))
+        return 1;
+    if (!std::none_of(iter,   working.end(), is_even))
+        return 2;
+    if (!fast_is_permutation(data, data + size, working.cbegin()))
+        return 99;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partition_copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partition_copy.pass.cpp
new file mode 100644
index 0000000..ac37c2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/partition_copy.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <iterator>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    auto is_even = [](auto t) {
+        return t % 2 == 0;
+    };
+
+    std::vector<std::uint8_t> v1, v2;
+    auto iter = std::partition_copy(data, data + size,
+        std::back_inserter<std::vector<std::uint8_t>>(v1),
+        std::back_inserter<std::vector<std::uint8_t>>(v2),
+        is_even);
+    ((void)iter);
+    // The two vectors should add up to the original size
+    if (v1.size() + v2.size() != size)
+        return 1;
+
+    // All of the even values should be in the first vector, and none in the second
+    if (!std::all_of(v1.begin(), v1.end(), is_even))
+        return 2;
+    if (!std::none_of(v2.begin(), v2.end(), is_even))
+        return 3;
+
+    // Every value in both vectors has to be in the original
+
+    // Make a copy of the input, and sort it
+    std::vector<std::uint8_t> v0{data, data + size};
+    std::sort(v0.begin(), v0.end());
+
+    // Sort each vector and ensure that all of the elements appear in the original input
+    std::sort(v1.begin(), v1.end());
+    if (!std::includes(v0.begin(), v0.end(), v1.begin(), v1.end()))
+        return 4;
+
+    std::sort(v2.begin(), v2.end());
+    if (!std::includes(v0.begin(), v0.end(), v2.begin(), v2.end()))
+        return 5;
+
+    // This, while simple, is really slow - 20 seconds on a 500K element input.
+    //  for (auto v: v1)
+    //      if (std::find(data, data + size, v) == data + size)
+    //          return 4;
+    //
+    //  for (auto v: v2)
+    //      if (std::find(data, data + size, v) == data + size)
+    //          return 5;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/pop_heap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/pop_heap.pass.cpp
new file mode 100644
index 0000000..e54eede
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/pop_heap.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    if (size < 2)
+        return 0;
+    std::vector<std::uint8_t> working(data, data + size);
+    std::make_heap(working.begin(), working.end());
+
+    // Pop things off, one at a time
+    auto iter = --working.end();
+    while (iter != working.begin()) {
+        std::pop_heap(working.begin(), iter);
+        if (!std::is_heap(working.begin(), --iter))
+            return 2;
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/push_heap.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/push_heap.pass.cpp
new file mode 100644
index 0000000..ce67176
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/push_heap.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    if (size < 2)
+        return 0;
+
+    // Make a heap from the first half of the data
+    std::vector<std::uint8_t> working(data, data + size);
+    auto iter = working.begin() + (size / 2);
+    std::make_heap(working.begin(), iter);
+    if (!std::is_heap(working.begin(), iter))
+        return 1;
+
+    // Now push the rest onto the heap, one at a time
+    ++iter;
+    for (; iter != working.end(); ++iter) {
+        std::push_heap(working.begin(), iter);
+        if (!std::is_heap(working.begin(), iter))
+            return 2;
+    }
+
+    if (!fast_is_permutation(data, data + size, working.cbegin()))
+        return 99;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/random.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/random.pass.cpp
new file mode 100644
index 0000000..e7545ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/random.pass.cpp
@@ -0,0 +1,194 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <cassert>
+#include <cmath>
+#include <cstddef>
+#include <cstdint>
+#include <cstring>
+#include <random>
+#include <type_traits>
+#include <vector>
+
+#include "fuzz.h"
+
+template <class IntT>
+std::vector<IntT> GetValues(const std::uint8_t *data, std::size_t size) {
+  std::vector<IntT> result;
+  while (size >= sizeof(IntT)) {
+    IntT tmp;
+    std::memcpy(&tmp, data, sizeof(IntT));
+    size -= sizeof(IntT);
+    data += sizeof(IntT);
+    result.push_back(tmp);
+  }
+  return result;
+}
+
+template <class Dist>
+struct ParamTypeHelper {
+  using ParamT = typename Dist::param_type;
+  using ResultT = typename Dist::result_type;
+  static_assert(std::is_same<ResultT, typename ParamT::distribution_type::result_type>::value, "");
+
+  static ParamT Create(const uint8_t* data, std::size_t size, bool &OK) {
+    constexpr bool select_vector_result = std::is_constructible<ParamT, ResultT*, ResultT*, ResultT*>::value;
+    constexpr bool select_vector_double = std::is_constructible<ParamT, double*, double*>::value;
+    constexpr int selector = select_vector_result ? 0 : (select_vector_double ? 1 : 2);
+    return DispatchAndCreate(std::integral_constant<int, selector>{}, data, size, OK);
+  }
+
+  // Vector result
+  static ParamT DispatchAndCreate(std::integral_constant<int, 0>, const std::uint8_t *data, std::size_t size, bool &OK) {
+    auto Input = GetValues<ResultT>(data, size);
+    OK = false;
+    if (Input.size() < 10)
+      return ParamT{};
+    OK = true;
+    auto Beg = Input.begin();
+    auto End = Input.end();
+    auto Mid = Beg + ((End - Beg) / 2);
+
+    assert(Mid - Beg <= (End  -  Mid));
+    ParamT p(Beg, Mid, Mid);
+    return p;
+  }
+
+  // Vector double
+  static ParamT DispatchAndCreate(std::integral_constant<int, 1>, const std::uint8_t *data, std::size_t size, bool &OK) {
+    auto Input = GetValues<double>(data, size);
+
+    OK = true;
+    auto Beg = Input.begin();
+    auto End = Input.end();
+
+    ParamT p(Beg, End);
+    return p;
+  }
+
+  // Default
+  static ParamT DispatchAndCreate(std::integral_constant<int, 2>, const std::uint8_t *data, std::size_t size, bool &OK) {
+    OK = false;
+    if (size < sizeof(ParamT))
+      return ParamT{};
+    OK = true;
+    ParamT input;
+    std::memcpy(&input, data, sizeof(ParamT));
+    return input;
+  }
+};
+
+template <class IntT>
+struct ParamTypeHelper<std::poisson_distribution<IntT>> {
+  using Dist = std::poisson_distribution<IntT>;
+  using ParamT = typename Dist::param_type;
+  using ResultT = typename Dist::result_type;
+
+  static ParamT Create(const std::uint8_t *data, std::size_t size, bool& OK) {
+    OK = false;
+    auto vals = GetValues<double>(data, size);
+    if (vals.empty() || std::isnan(vals[0]) || std::isnan(std::abs(vals[0])) || vals[0] < 0)
+      return ParamT{};
+    OK = true;
+    return ParamT{vals[0]};
+  }
+};
+
+template <class IntT>
+struct ParamTypeHelper<std::geometric_distribution<IntT>> {
+  using Dist = std::geometric_distribution<IntT>;
+  using ParamT = typename Dist::param_type;
+  using ResultT = typename Dist::result_type;
+
+  static ParamT Create(const std::uint8_t *data, std::size_t size, bool& OK) {
+    OK = false;
+    auto vals = GetValues<double>(data, size);
+    if (vals.empty() || std::isnan(vals[0]) || vals[0] < 0 )
+      return ParamT{};
+    OK = true;
+    return ParamT{vals[0]};
+  }
+};
+
+template <class IntT>
+struct ParamTypeHelper<std::lognormal_distribution<IntT>> {
+  using Dist = std::lognormal_distribution<IntT>;
+  using ParamT = typename Dist::param_type;
+  using ResultT = typename Dist::result_type;
+
+  static ParamT Create(const std::uint8_t *data, std::size_t size, bool& OK) {
+    OK = false;
+    auto vals = GetValues<ResultT>(data, size);
+    if (vals.size() < 2 )
+      return ParamT{};
+    OK = true;
+    return ParamT{vals[0], vals[1]};
+  }
+};
+
+template <>
+struct ParamTypeHelper<std::bernoulli_distribution> {
+  using Dist = std::bernoulli_distribution;
+  using ParamT = Dist::param_type;
+  using ResultT = Dist::result_type;
+
+  static ParamT Create(const std::uint8_t *data, std::size_t size, bool& OK) {
+    OK = false;
+    auto vals = GetValues<double>(data, size);
+    if (vals.empty())
+      return ParamT{};
+    OK = true;
+    return ParamT{vals[0]};
+  }
+};
+
+template <class Distribution>
+int helper(const std::uint8_t *data, std::size_t size) {
+  std::mt19937 engine;
+  using ParamT = typename Distribution::param_type;
+  bool OK;
+  ParamT p = ParamTypeHelper<Distribution>::Create(data, size, OK);
+  if (!OK)
+    return 0;
+  Distribution d(p);
+  volatile auto res = d(engine);
+  if (std::isnan(res)) {
+    // FIXME(llvm.org/PR44289):
+    // Investigate why these distributions are returning NaN and decide
+    // if that's what we want them to be doing.
+    //
+    // Make this assert false (or return non-zero).
+    return 0;
+  }
+  return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+  return helper<std::uniform_int_distribution<std::int16_t>>(data, size)       ||
+         helper<std::uniform_real_distribution<float>>(data, size)             ||
+         helper<std::bernoulli_distribution>(data, size)                       ||
+         helper<std::poisson_distribution<std::int16_t>>(data, size)           ||
+         helper<std::geometric_distribution<std::int16_t>>(data, size)         ||
+         helper<std::binomial_distribution<std::int16_t>>(data, size)          ||
+         helper<std::negative_binomial_distribution<std::int16_t>>(data, size) ||
+         helper<std::exponential_distribution<float>>(data, size)              ||
+         helper<std::gamma_distribution<float>>(data, size)                    ||
+         helper<std::weibull_distribution<float>>(data, size)                  ||
+         helper<std::extreme_value_distribution<float>>(data, size)            ||
+         helper<std::normal_distribution<float>>(data, size)                   ||
+         helper<std::lognormal_distribution<float>>(data, size)                ||
+         helper<std::chi_squared_distribution<float>>(data, size)              ||
+         helper<std::cauchy_distribution<float>>(data, size)                   ||
+         helper<std::fisher_f_distribution<float>>(data, size)                 ||
+         helper<std::student_t_distribution<float>>(data, size)                ||
+         helper<std::discrete_distribution<std::int16_t>>(data, size)          ||
+         helper<std::piecewise_constant_distribution<float>>(data, size)       ||
+         helper<std::piecewise_linear_distribution<float>>(data, size);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/regex.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/regex.pass.cpp
new file mode 100644
index 0000000..7e3b362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/regex.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-localization
+
+#include <cstddef>
+#include <cstdint>
+#include <regex>
+#include <string>
+
+#include "fuzz.h"
+
+template <std::regex_constants::syntax_option_type Syntax>
+static int regex_test(const std::uint8_t *data, std::size_t size) {
+    if (size == 0)
+        return 0;
+
+    std::string s((const char *)data, size);
+    std::regex re;
+    try {
+        re.assign(s, Syntax);
+    } catch (std::regex_error &) {
+        // the data represents an invalid regex, ignore this test case
+        return 0;
+    }
+
+    auto match = std::regex_match(s, re);
+    (void)match;
+    return 0; // always pretend we succeeded -- we're only looking for crashes
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    return regex_test<std::regex_constants::awk>(data, size)        ||
+           regex_test<std::regex_constants::basic>(data, size)      ||
+           regex_test<std::regex_constants::ECMAScript>(data, size) ||
+           regex_test<std::regex_constants::egrep>(data, size)      ||
+           regex_test<std::regex_constants::extended>(data, size)   ||
+           regex_test<std::regex_constants::grep>(data, size);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/search.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/search.pass.cpp
new file mode 100644
index 0000000..e20fad2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/search.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <limits>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    if (size < 2)
+        return 0;
+
+    const std::size_t pat_size = data[0] * (size - 1) / std::numeric_limits<uint8_t>::max();
+    assert(pat_size <= size - 1);
+    const std::uint8_t *pat_begin = data + 1;
+    const std::uint8_t *pat_end   = pat_begin + pat_size;
+    const std::uint8_t *data_end  = data + size;
+    assert(pat_end <= data_end);
+
+    auto it = std::search(pat_end, data_end, pat_begin, pat_end);
+    if (it != data_end) // not found
+        if (!std::equal(pat_begin, pat_end, it))
+            return 1;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/sort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/sort.pass.cpp
new file mode 100644
index 0000000..e118897
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/sort.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    std::vector<std::uint8_t> working(data, data + size);
+    std::sort(working.begin(), working.end());
+
+    if (!std::is_sorted(working.begin(), working.end()))
+        return 1;
+    if (!fast_is_permutation(data, data + size, working.cbegin()))
+        return 99;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/stable_partition.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/stable_partition.pass.cpp
new file mode 100644
index 0000000..2a1799d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/stable_partition.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    auto is_even = [](auto b) { return b.key % 2 == 0; };
+
+    std::vector<ByteWithPayload> input;
+    for (std::size_t i = 0; i < size; ++i)
+        input.push_back(ByteWithPayload(data[i], i));
+    std::vector<ByteWithPayload> working = input;
+    auto iter = std::stable_partition(working.begin(), working.end(), is_even);
+
+    if (!std::all_of(working.begin(), iter, is_even))
+        return 1;
+    if (!std::none_of(iter,   working.end(), is_even))
+        return 2;
+    if (!std::is_sorted(working.begin(), iter, ByteWithPayload::payload_less()))
+        return 3;
+    if (!std::is_sorted(iter,   working.end(), ByteWithPayload::payload_less()))
+        return 4;
+    if (!fast_is_permutation(input.cbegin(), input.cend(), working.cbegin()))
+        return 99;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/stable_sort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/stable_sort.pass.cpp
new file mode 100644
index 0000000..b493691
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/stable_sort.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    std::vector<ByteWithPayload> input;
+    for (std::size_t i = 0; i < size; ++i)
+        input.push_back(ByteWithPayload(data[i], i));
+
+    std::vector<ByteWithPayload> working = input;
+    std::stable_sort(working.begin(), working.end(), ByteWithPayload::key_less());
+
+    if (!std::is_sorted(working.begin(), working.end(), ByteWithPayload::key_less()))
+        return 1;
+
+    auto iter = working.begin();
+    while (iter != working.end()) {
+        auto range = std::equal_range(iter, working.end(), *iter, ByteWithPayload::key_less());
+        if (!std::is_sorted(range.first, range.second, ByteWithPayload::total_less()))
+            return 2;
+        iter = range.second;
+    }
+    if (!fast_is_permutation(input.cbegin(), input.cend(), working.cbegin()))
+        return 99;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/unique.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/unique.pass.cpp
new file mode 100644
index 0000000..e95c617
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/unique.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    std::vector<std::uint8_t> working(data, data + size);
+    std::sort(working.begin(), working.end());
+    std::vector<std::uint8_t> results = working;
+    std::vector<std::uint8_t>::iterator new_end = std::unique(results.begin(), results.end());
+    std::vector<std::uint8_t>::iterator it; // scratch iterator
+
+    // Check the size of the unique'd sequence.
+    // it should only be zero if the input sequence was empty.
+    if (results.begin() == new_end)
+        return working.size() == 0 ? 0 : 1;
+
+    // 'results' is sorted
+    if (!std::is_sorted(results.begin(), new_end))
+        return 2;
+
+    // All the elements in 'results' must be different
+    it = results.begin();
+    std::uint8_t prev_value = *it++;
+    for (; it != new_end; ++it) {
+        if (*it == prev_value)
+            return 3;
+        prev_value = *it;
+    }
+
+    // Every element in 'results' must be in 'working'
+    for (it = results.begin(); it != new_end; ++it)
+        if (std::find(working.begin(), working.end(), *it) == working.end())
+            return 4;
+
+    // Every element in 'working' must be in 'results'
+    for (auto v : working)
+        if (std::find(results.begin(), new_end, v) == new_end)
+            return 5;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/fuzzing/unique_copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/unique_copy.pass.cpp
new file mode 100644
index 0000000..dfaaa19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/fuzzing/unique_copy.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <algorithm>
+#include <cstddef>
+#include <cstdint>
+#include <iterator>
+#include <vector>
+
+#include "fuzz.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+    std::vector<std::uint8_t> working(data, data + size);
+    std::sort(working.begin(), working.end());
+    std::vector<std::uint8_t> results;
+    (void)std::unique_copy(working.begin(), working.end(),
+                           std::back_inserter<std::vector<std::uint8_t>>(results));
+    std::vector<std::uint8_t>::iterator it; // scratch iterator
+
+    // Check the size of the unique'd sequence.
+    // it should only be zero if the input sequence was empty.
+    if (results.size() == 0)
+        return working.size() == 0 ? 0 : 1;
+
+    // 'results' is sorted
+    if (!std::is_sorted(results.begin(), results.end()))
+        return 2;
+
+    // All the elements in 'results' must be different
+    it = results.begin();
+    std::uint8_t prev_value = *it++;
+    for (; it != results.end(); ++it) {
+        if (*it == prev_value)
+            return 3;
+        prev_value = *it;
+    }
+
+    // Every element in 'results' must be in 'working'
+    for (auto v : results)
+        if (std::find(working.begin(), working.end(), v) == working.end())
+            return 4;
+
+    // Every element in 'working' must be in 'results'
+    for (auto v : working)
+        if (std::find(results.begin(), results.end(), v) == results.end())
+            return 5;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.py b/app/src/main/cpp/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.py
new file mode 100644
index 0000000..c64efa3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.py
@@ -0,0 +1,131 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+"""Commands used to automate testing gdb pretty printers.
+
+This script is part of a larger framework to test gdb pretty printers. It
+runs the program, detects test cases, checks them, and prints results.
+
+See gdb_pretty_printer_test.sh.cpp on how to write a test case.
+
+"""
+
+from __future__ import print_function
+import re
+import gdb
+import sys
+
+test_failures = 0
+# Sometimes the inital run command can fail to trace the process.
+# (e.g. you don't have ptrace permissions)
+# In these cases gdb still sends us an exited event so we cannot
+# see what "run" printed to check for a warning message, since
+# we get taken to our exit handler before we can look.
+# Instead check that at least one test has been run by the time
+# we exit.
+has_run_tests = False
+
+
+class CheckResult(gdb.Command):
+
+    def __init__(self):
+        super(CheckResult, self).__init__(
+            "print_and_compare", gdb.COMMAND_DATA)
+
+    def invoke(self, arg, from_tty):
+        global has_run_tests
+
+        try:
+            has_run_tests = True
+
+            # Stack frame is:
+            # 0. StopForDebugger
+            # 1. ComparePrettyPrintToChars or ComparePrettyPrintToRegex
+            # 2. TestCase
+            compare_frame = gdb.newest_frame().older()
+            testcase_frame = compare_frame.older()
+            test_loc = testcase_frame.find_sal()
+            # Use interactive commands in the correct context to get the pretty
+            # printed version
+
+            value_str = self._get_value_string(compare_frame, testcase_frame)
+
+            # Ignore the convenience variable name and newline
+            value = value_str[value_str.find("= ") + 2:-1]
+            gdb.newest_frame().select()
+            expectation_val = compare_frame.read_var("expectation")
+            check_literal = expectation_val.string(encoding="utf-8")
+            if "PrettyPrintToRegex" in compare_frame.name():
+                test_fails = not re.search(check_literal, value)
+            else:
+                test_fails = value != check_literal
+
+            if test_fails:
+                global test_failures
+                print("FAIL: " + test_loc.symtab.filename +
+                      ":" + str(test_loc.line))
+                print("GDB printed:")
+                print("   " + repr(value))
+                print("Value should match:")
+                print("   " + repr(check_literal))
+                test_failures += 1
+            else:
+                print("PASS: " + test_loc.symtab.filename +
+                      ":" + str(test_loc.line))
+
+        except RuntimeError as e:
+            # At this point, lots of different things could be wrong, so don't try to
+            # recover or figure it out. Don't exit either, because then it's
+            # impossible debug the framework itself.
+            print("FAIL: Something is wrong in the test framework.")
+            print(str(e))
+            test_failures += 1
+
+    def _get_value_string(self, compare_frame, testcase_frame):
+        compare_frame.select()
+        if "ComparePrettyPrint" in compare_frame.name():
+            s = gdb.execute("p value", to_string=True)
+        else:
+            value_str = str(compare_frame.read_var("value"))
+            clean_expression_str = value_str.strip("'\"")
+            testcase_frame.select()
+            s = gdb.execute("p " + clean_expression_str, to_string=True)
+        if sys.version_info.major == 2:
+            return s.decode("utf-8")
+        return s
+
+
+def exit_handler(event=None):
+    global test_failures
+    global has_run_tests
+
+    if not has_run_tests:
+        print("FAILED test program did not run correctly, check gdb warnings")
+        test_failures = -1
+    elif test_failures:
+        print("FAILED %d cases" % test_failures)
+    exit(test_failures)
+
+
+# Start code executed at load time
+
+# Disable terminal paging
+gdb.execute("set height 0")
+gdb.execute("set python print-stack full")
+test_failures = 0
+CheckResult()
+test_bp = gdb.Breakpoint("StopForDebugger")
+test_bp.enabled = True
+test_bp.silent = True
+test_bp.commands = "print_and_compare\ncontinue"
+# "run" won't return if the program exits; ensure the script regains control.
+gdb.events.exited.connect(exit_handler)
+gdb.execute("run")
+# If the program didn't exit, something went wrong, but we don't
+# know what. Fail on exit.
+test_failures += 1
+exit_handler(None)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp
new file mode 100644
index 0000000..48b3f10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/gdb/gdb_pretty_printer_test.sh.cpp
@@ -0,0 +1,689 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: host-has-gdb-with-python
+// REQUIRES: locale.en_US.UTF-8
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03
+
+// TODO: Investigate these failures which break the CI.
+// UNSUPPORTED: clang-14, clang-15, clang-16
+
+// TODO: Investigate this failure on GCC 12 (in Ubuntu Jammy)
+// UNSUPPORTED: gcc-12
+
+// RUN: %{cxx} %{flags} %s -o %t.exe %{compile_flags} -g %{link_flags}
+// Ensure locale-independence for unicode tests.
+// RUN: env LANG=en_US.UTF-8 %{gdb} -nx -batch -iex "set autoload off" -ex "source %S/../../../utils/gdb/libcxx/printers.py" -ex "python register_libcxx_printer_loader()" -ex "source %S/gdb_pretty_printer_test.py" %t.exe
+
+#include <bitset>
+#include <deque>
+#include <list>
+#include <map>
+#include <memory>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <stack>
+#include <string>
+#include <tuple>
+#include <unordered_map>
+#include <unordered_set>
+
+#include "test_macros.h"
+
+// To write a pretty-printer test:
+//
+// 1. Declare a variable of the type you want to test
+//
+// 2. Set its value to something which will test the pretty printer in an
+//    interesting way.
+//
+// 3. Call ComparePrettyPrintToChars with that variable, and a "const char*"
+//    value to compare to the printer's output.
+//
+//    Or
+//
+//    Call ComparePrettyPrintToRegex with that variable, and a "const char*"
+//    *python* regular expression to match against the printer's output.
+//    The set of special characters in a Python regular expression overlaps
+//    with a lot of things the pretty printers print--brackets, for
+//    example--so take care to escape appropriately.
+//
+// Alternatively, construct a string that gdb can parse as an expression,
+// so that printing the value of the expression will test the pretty printer
+// in an interesting way. Then, call CompareExpressionPrettyPrintToChars or
+// CompareExpressionPrettyPrintToRegex to compare the printer's output.
+
+// Avoids setting a breakpoint in every-single instantiation of
+// ComparePrettyPrintTo*.  Also, make sure neither it, nor the
+// variables we need present in the Compare functions are optimized
+// away.
+#ifdef TEST_COMPILER_GCC
+#define OPT_NONE __attribute__((noinline))
+#else
+#define OPT_NONE __attribute__((optnone))
+#endif
+void StopForDebugger(void *, void *) OPT_NONE;
+void StopForDebugger(void *, void *)  {}
+
+
+// Prevents the compiler optimizing away the parameter in the caller function.
+template <typename Type>
+void MarkAsLive(Type &&) OPT_NONE;
+template <typename Type>
+void MarkAsLive(Type &&) {}
+
+// In all of the Compare(Expression)PrettyPrintTo(Regex/Chars) functions below,
+// the python script sets a breakpoint just before the call to StopForDebugger,
+// compares the result to the expectation.
+//
+// The expectation is a literal string to be matched exactly in
+// *PrettyPrintToChars functions, and is a python regular expression in
+// *PrettyPrintToRegex functions.
+//
+// In ComparePrettyPrint* functions, the value is a variable of any type. In
+// CompareExpressionPrettyPrint functions, the value is a string expression that
+// gdb will parse and print the result.
+//
+// The python script will print either "PASS", or a detailed failure explanation
+// along with the line that has invoke the function. The testing will continue
+// in either case.
+
+template <typename TypeToPrint> void ComparePrettyPrintToChars(
+    TypeToPrint value,
+    const char *expectation) {
+  MarkAsLive(value);
+  StopForDebugger(&value, &expectation);
+}
+
+template <typename TypeToPrint> void ComparePrettyPrintToRegex(
+    TypeToPrint value,
+    const char *expectation) {
+  MarkAsLive(value);
+  StopForDebugger(&value, &expectation);
+}
+
+void CompareExpressionPrettyPrintToChars(
+    std::string value,
+    const char *expectation) {
+  MarkAsLive(value);
+  StopForDebugger(&value, &expectation);
+}
+
+void CompareExpressionPrettyPrintToRegex(
+    std::string value,
+    const char *expectation) {
+  MarkAsLive(value);
+  StopForDebugger(&value, &expectation);
+}
+
+namespace example {
+  struct example_struct {
+    int a = 0;
+    int arr[1000];
+  };
+}
+
+// If enabled, the self test will "fail"--because we want to be sure it properly
+// diagnoses tests that *should* fail. Evaluate the output by hand.
+void framework_self_test() {
+#ifdef FRAMEWORK_SELF_TEST
+  // Use the most simple data structure we can.
+  const char a = 'a';
+
+  // Tests that should pass
+  ComparePrettyPrintToChars(a, "97 'a'");
+  ComparePrettyPrintToRegex(a, ".*");
+
+  // Tests that should fail.
+  ComparePrettyPrintToChars(a, "b");
+  ComparePrettyPrintToRegex(a, "b");
+#endif
+}
+
+// A simple pass-through allocator to check that we handle CompressedPair
+// correctly.
+template <typename T> class UncompressibleAllocator : public std::allocator<T> {
+ public:
+  char X;
+};
+
+void string_test() {
+  std::string short_string("kdjflskdjf");
+  // The display_hint "string" adds quotes the printed result.
+  ComparePrettyPrintToChars(short_string, "\"kdjflskdjf\"");
+
+  std::basic_string<char, std::char_traits<char>, UncompressibleAllocator<char>>
+      long_string("mehmet bizim dostumuz agzi kirik testimiz");
+  ComparePrettyPrintToChars(long_string,
+                            "\"mehmet bizim dostumuz agzi kirik testimiz\"");
+}
+
+namespace a_namespace {
+// To test name-lookup in the presence of using inside a namespace. Inside this
+// namespace, unqualified string_view variables will appear in the debug info as
+// "a_namespace::string_view, rather than "std::string_view".
+//
+// There is nothing special here about string_view; it's just the data structure
+// where lookup with using inside a namespace wasn't always working.
+
+using string_view = std::string_view;
+
+void string_view_test() {
+  std::string_view i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "\"\"");
+
+  std::string source_string("to be or not to be");
+  std::string_view to_be(source_string);
+  ComparePrettyPrintToChars(to_be, "\"to be or not to be\"");
+
+  const char char_arr[] = "what a wonderful world";
+  std::string_view wonderful(&char_arr[7], 9);
+  ComparePrettyPrintToChars(wonderful, "\"wonderful\"");
+
+  const char char_arr1[] = "namespace_stringview";
+  string_view namespace_stringview(&char_arr1[10], 10);
+  ComparePrettyPrintToChars(namespace_stringview, "\"stringview\"");
+}
+}
+
+void u16string_test() {
+  std::u16string test0 = u"Hello World";
+  ComparePrettyPrintToChars(test0, "u\"Hello World\"");
+  std::u16string test1 = u"\U00010196\u20AC\u00A3\u0024";
+  ComparePrettyPrintToChars(test1, "u\"\U00010196\u20AC\u00A3\u0024\"");
+  std::u16string test2 = u"\u0024\u0025\u0026\u0027";
+  ComparePrettyPrintToChars(test2, "u\"\u0024\u0025\u0026\u0027\"");
+  std::u16string test3 = u"mehmet bizim dostumuz agzi kirik testimiz";
+  ComparePrettyPrintToChars(test3,
+                            ("u\"mehmet bizim dostumuz agzi kirik testimiz\""));
+}
+
+void u32string_test() {
+  std::u32string test0 = U"Hello World";
+  ComparePrettyPrintToChars(test0, "U\"Hello World\"");
+  std::u32string test1 =
+      U"\U0001d552\U0001d553\U0001d554\U0001d555\U0001d556\U0001d557";
+  ComparePrettyPrintToChars(
+      test1,
+      ("U\"\U0001d552\U0001d553\U0001d554\U0001d555\U0001d556\U0001d557\""));
+  std::u32string test2 = U"\U00004f60\U0000597d";
+  ComparePrettyPrintToChars(test2, ("U\"\U00004f60\U0000597d\""));
+  std::u32string test3 = U"mehmet bizim dostumuz agzi kirik testimiz";
+  ComparePrettyPrintToChars(test3, ("U\"mehmet bizim dostumuz agzi kirik testimiz\""));
+}
+
+void tuple_test() {
+  std::tuple<int, int, int> test0(2, 3, 4);
+  ComparePrettyPrintToChars(
+      test0,
+      "std::tuple containing = {[1] = 2, [2] = 3, [3] = 4}");
+
+  std::tuple<> test1;
+  ComparePrettyPrintToChars(
+      test1,
+      "empty std::tuple");
+}
+
+void unique_ptr_test() {
+  std::unique_ptr<std::string> matilda(new std::string("Matilda"));
+  ComparePrettyPrintToRegex(
+      std::move(matilda),
+      R"(std::unique_ptr<std::string> containing = {__ptr_ = 0x[a-f0-9]+})");
+  std::unique_ptr<int> forty_two(new int(42));
+  ComparePrettyPrintToRegex(std::move(forty_two),
+      R"(std::unique_ptr<int> containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  std::unique_ptr<int> this_is_null;
+  ComparePrettyPrintToChars(std::move(this_is_null),
+      R"(std::unique_ptr is nullptr)");
+}
+
+void bitset_test() {
+  std::bitset<258> i_am_empty(0);
+  ComparePrettyPrintToRegex(i_am_empty, "std::bitset<258(u|ul)?>");
+
+  std::bitset<0> very_empty;
+  ComparePrettyPrintToRegex(very_empty, "std::bitset<0(u|ul)?>");
+
+  std::bitset<15> b_000001111111100(1020);
+  ComparePrettyPrintToRegex(b_000001111111100,
+      R"(std::bitset<15(u|ul)?> = {\[2\] = 1, \[3\] = 1, \[4\] = 1, \[5\] = 1, \[6\] = 1, )"
+      R"(\[7\] = 1, \[8\] = 1, \[9\] = 1})");
+
+  std::bitset<258> b_0_129_132(0);
+  b_0_129_132[0] = true;
+  b_0_129_132[129] = true;
+  b_0_129_132[132] = true;
+  ComparePrettyPrintToRegex(b_0_129_132,
+      R"(std::bitset<258(u|ul)?> = {\[0\] = 1, \[129\] = 1, \[132\] = 1})");
+}
+
+void list_test() {
+  std::list<int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::list is empty");
+
+  std::list<int> one_two_three {1, 2, 3};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::list with 3 elements = {1, 2, 3}");
+
+  std::list<std::string> colors {"red", "blue", "green"};
+  ComparePrettyPrintToChars(colors,
+      R"(std::list with 3 elements = {"red", "blue", "green"})");
+}
+
+void deque_test() {
+  std::deque<int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::deque is empty");
+
+  std::deque<int> one_two_three {1, 2, 3};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::deque with 3 elements = {1, 2, 3}");
+
+  std::deque<example::example_struct> bfg;
+  for (int i = 0; i < 10; ++i) {
+    example::example_struct current;
+    current.a = i;
+    bfg.push_back(current);
+  }
+  for (int i = 0; i < 3; ++i) {
+    bfg.pop_front();
+  }
+  for (int i = 0; i < 3; ++i) {
+    bfg.pop_back();
+  }
+  ComparePrettyPrintToRegex(bfg,
+      "std::deque with 4 elements = {"
+      "{a = 3, arr = {[^}]+}}, "
+      "{a = 4, arr = {[^}]+}}, "
+      "{a = 5, arr = {[^}]+}}, "
+      "{a = 6, arr = {[^}]+}}}");
+}
+
+void map_test() {
+  std::map<int, int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::map is empty");
+
+  std::map<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  ComparePrettyPrintToChars(one_two_three,
+      "std::map with 3 elements = "
+      R"({[1] = "one", [2] = "two", [3] = "three"})");
+
+  std::map<int, example::example_struct> bfg;
+  for (int i = 0; i < 4; ++i) {
+    example::example_struct current;
+    current.a = 17 * i;
+    bfg.insert({i, current});
+  }
+  ComparePrettyPrintToRegex(bfg,
+      R"(std::map with 4 elements = {)"
+      R"(\[0\] = {a = 0, arr = {[^}]+}}, )"
+      R"(\[1\] = {a = 17, arr = {[^}]+}}, )"
+      R"(\[2\] = {a = 34, arr = {[^}]+}}, )"
+      R"(\[3\] = {a = 51, arr = {[^}]+}}})");
+}
+
+void multimap_test() {
+  std::multimap<int, int> i_am_empty{};
+  ComparePrettyPrintToChars(i_am_empty, "std::multimap is empty");
+
+  std::multimap<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({3, "three"});
+  one_two_three.insert({1, "ein"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({2, "zwei"});
+  one_two_three.insert({1, "bir"});
+
+  ComparePrettyPrintToChars(one_two_three,
+      "std::multimap with 6 elements = "
+      R"({[1] = "one", [1] = "ein", [1] = "bir", )"
+      R"([2] = "two", [2] = "zwei", [3] = "three"})");
+}
+
+void queue_test() {
+  std::queue<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty,
+      "std::queue wrapping = {std::deque is empty}");
+
+  std::queue<int> one_two_three(std::deque<int>{1, 2, 3});
+    ComparePrettyPrintToChars(one_two_three,
+        "std::queue wrapping = {"
+        "std::deque with 3 elements = {1, 2, 3}}");
+}
+
+void priority_queue_test() {
+  std::priority_queue<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty,
+      "std::priority_queue wrapping = {std::vector of length 0, capacity 0}");
+
+  std::priority_queue<int> one_two_three;
+  one_two_three.push(11111);
+  one_two_three.push(22222);
+  one_two_three.push(33333);
+
+  ComparePrettyPrintToRegex(one_two_three,
+      R"(std::priority_queue wrapping = )"
+      R"({std::vector of length 3, capacity 3 = {33333)");
+
+  ComparePrettyPrintToRegex(one_two_three, ".*11111.*");
+  ComparePrettyPrintToRegex(one_two_three, ".*22222.*");
+}
+
+void set_test() {
+  std::set<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::set is empty");
+
+  std::set<int> one_two_three {3, 1, 2};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::set with 3 elements = {1, 2, 3}");
+
+  std::set<std::pair<int, int>> prime_pairs {
+      std::make_pair(3, 5), std::make_pair(5, 7), std::make_pair(3, 5)};
+
+  ComparePrettyPrintToChars(prime_pairs,
+      "std::set with 2 elements = {"
+      "{first = 3, second = 5}, {first = 5, second = 7}}");
+
+  using using_set = std::set<int>;
+  using_set other{1, 2, 3};
+  ComparePrettyPrintToChars(other, "std::set with 3 elements = {1, 2, 3}");
+}
+
+void stack_test() {
+  std::stack<int> test0;
+  ComparePrettyPrintToChars(test0,
+                            "std::stack wrapping = {std::deque is empty}");
+  test0.push(5);
+  test0.push(6);
+  ComparePrettyPrintToChars(
+      test0, "std::stack wrapping = {std::deque with 2 elements = {5, 6}}");
+  std::stack<bool> test1;
+  test1.push(true);
+  test1.push(false);
+  ComparePrettyPrintToChars(
+      test1,
+      "std::stack wrapping = {std::deque with 2 elements = {true, false}}");
+
+  std::stack<std::string> test2;
+  test2.push("Hello");
+  test2.push("World");
+  ComparePrettyPrintToChars(test2,
+                            "std::stack wrapping = {std::deque with 2 elements "
+                            "= {\"Hello\", \"World\"}}");
+}
+
+void multiset_test() {
+  std::multiset<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::multiset is empty");
+
+  std::multiset<std::string> one_two_three {"1:one", "2:two", "3:three", "1:one"};
+  ComparePrettyPrintToChars(one_two_three,
+      "std::multiset with 4 elements = {"
+      R"("1:one", "1:one", "2:two", "3:three"})");
+}
+
+void vector_test() {
+  std::vector<bool> test0 = {true, false};
+  ComparePrettyPrintToRegex(test0,
+                            "std::vector<bool> of "
+                            "length 2, capacity (32|64) = {1, 0}");
+  for (int i = 0; i < 31; ++i) {
+    test0.push_back(true);
+    test0.push_back(false);
+  }
+  ComparePrettyPrintToRegex(
+      test0,
+      "std::vector<bool> of length 64, "
+      "capacity 64 = {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, "
+      "0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, "
+      "0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0}");
+  test0.push_back(true);
+  ComparePrettyPrintToRegex(
+      test0,
+      "std::vector<bool> of length 65, "
+      "capacity (96|128) = {1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, "
+      "0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, "
+      "0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1}");
+
+  std::vector<int> test1;
+  ComparePrettyPrintToChars(test1, "std::vector of length 0, capacity 0");
+
+  std::vector<int> test2 = {5, 6, 7};
+  ComparePrettyPrintToChars(test2,
+                            "std::vector of length "
+                            "3, capacity 3 = {5, 6, 7}");
+
+  std::vector<int, UncompressibleAllocator<int>> test3({7, 8});
+  ComparePrettyPrintToChars(std::move(test3),
+                            "std::vector of length "
+                            "2, capacity 2 = {7, 8}");
+}
+
+void set_iterator_test() {
+  std::set<int> one_two_three {1111, 2222, 3333};
+  auto it = one_two_three.find(2222);
+  MarkAsLive(it);
+  CompareExpressionPrettyPrintToRegex("it",
+      R"(std::__tree_const_iterator  = {\[0x[a-f0-9]+\] = 2222})");
+
+  auto not_found = one_two_three.find(1234);
+  MarkAsLive(not_found);
+  // Because the end_node is not easily detected, just be sure it doesn't crash.
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__tree_const_iterator ( = {\[0x[a-f0-9]+\] = .*}|<error reading variable:.*>))");
+}
+
+void map_iterator_test() {
+  std::map<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  auto it = one_two_three.begin();
+  MarkAsLive(it);
+  CompareExpressionPrettyPrintToRegex("it",
+      R"(std::__map_iterator  = )"
+      R"({\[0x[a-f0-9]+\] = {first = 1, second = "one"}})");
+
+  auto not_found = one_two_three.find(7);
+  MarkAsLive(not_found);
+  // Because the end_node is not easily detected, just be sure it doesn't crash.
+  CompareExpressionPrettyPrintToRegex(
+      "not_found", R"(std::__map_iterator ( = {\[0x[a-f0-9]+\] = .*}|<error reading variable:.*>))");
+}
+
+void unordered_set_test() {
+  std::unordered_set<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_set is empty");
+
+  std::unordered_set<int> numbers {12345, 67890, 222333, 12345};
+  numbers.erase(numbers.find(222333));
+  ComparePrettyPrintToRegex(numbers, "std::unordered_set with 2 elements = ");
+  ComparePrettyPrintToRegex(numbers, ".*12345.*");
+  ComparePrettyPrintToRegex(numbers, ".*67890.*");
+
+  std::unordered_set<std::string> colors {"red", "blue", "green"};
+  ComparePrettyPrintToRegex(colors, "std::unordered_set with 3 elements = ");
+  ComparePrettyPrintToRegex(colors, R"(.*"red".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"blue".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"green".*)");
+}
+
+void unordered_multiset_test() {
+  std::unordered_multiset<int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_multiset is empty");
+
+  std::unordered_multiset<int> numbers {12345, 67890, 222333, 12345};
+  ComparePrettyPrintToRegex(numbers,
+                            "std::unordered_multiset with 4 elements = ");
+  ComparePrettyPrintToRegex(numbers, ".*12345.*12345.*");
+  ComparePrettyPrintToRegex(numbers, ".*67890.*");
+  ComparePrettyPrintToRegex(numbers, ".*222333.*");
+
+  std::unordered_multiset<std::string> colors {"red", "blue", "green", "red"};
+  ComparePrettyPrintToRegex(colors,
+                            "std::unordered_multiset with 4 elements = ");
+  ComparePrettyPrintToRegex(colors, R"(.*"red".*"red".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"blue".*)");
+  ComparePrettyPrintToRegex(colors, R"(.*"green".*)");
+}
+
+void unordered_map_test() {
+  std::unordered_map<int, int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_map is empty");
+
+  std::unordered_map<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  ComparePrettyPrintToRegex(one_two_three,
+                            "std::unordered_map with 3 elements = ");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[1\] = "one".*)");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[2\] = "two".*)");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[3\] = "three".*)");
+}
+
+void unordered_multimap_test() {
+  std::unordered_multimap<int, int> i_am_empty;
+  ComparePrettyPrintToChars(i_am_empty, "std::unordered_multimap is empty");
+
+  std::unordered_multimap<int, std::string> one_two_three;
+  one_two_three.insert({1, "one"});
+  one_two_three.insert({2, "two"});
+  one_two_three.insert({3, "three"});
+  one_two_three.insert({2, "two"});
+  ComparePrettyPrintToRegex(one_two_three,
+                            "std::unordered_multimap with 4 elements = ");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[1\] = "one".*)");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[2\] = "two".*\[2\] = "two")");
+  ComparePrettyPrintToRegex(one_two_three, R"(.*\[3\] = "three".*)");
+}
+
+void unordered_map_iterator_test() {
+  std::unordered_map<int, int> ones_to_eights;
+  ones_to_eights.insert({1, 8});
+  ones_to_eights.insert({11, 88});
+  ones_to_eights.insert({111, 888});
+
+  auto ones_to_eights_begin = ones_to_eights.begin();
+  MarkAsLive(ones_to_eights_begin);
+  CompareExpressionPrettyPrintToRegex("ones_to_eights_begin",
+      R"(std::__hash_map_iterator  = {\[1+\] = 8+})");
+
+  auto not_found = ones_to_eights.find(5);
+  MarkAsLive(not_found);
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__hash_map_iterator = end\(\))");
+}
+
+void unordered_set_iterator_test() {
+  std::unordered_set<int> ones;
+  ones.insert(111);
+  ones.insert(1111);
+  ones.insert(11111);
+
+  auto ones_begin = ones.begin();
+  MarkAsLive(ones_begin);
+  CompareExpressionPrettyPrintToRegex("ones_begin",
+      R"(std::__hash_const_iterator  = {1+})");
+
+  auto not_found = ones.find(5);
+  MarkAsLive(not_found);
+  CompareExpressionPrettyPrintToRegex("not_found",
+      R"(std::__hash_const_iterator = end\(\))");
+}
+
+// Check that libc++ pretty printers do not handle pointers.
+void pointer_negative_test() {
+  int abc = 123;
+  int *int_ptr = &abc;
+  // Check that the result is equivalent to "p/r int_ptr" command.
+  ComparePrettyPrintToRegex(int_ptr, R"(\(int \*\) 0x[a-f0-9]+)");
+}
+
+void shared_ptr_test() {
+  // Shared ptr tests while using test framework call another function
+  // due to which there is one more count for the pointer. Hence, all the
+  // following tests are testing with expected count plus 1.
+  std::shared_ptr<const int> test0 = std::make_shared<const int>(5);
+  // The python regular expression matcher treats newlines as significant, so
+  // these regular expressions should be on one line.
+  ComparePrettyPrintToRegex(
+      test0,
+      R"(std::shared_ptr<int> count [2\?], weak [0\?]( \(libc\+\+ missing debug info\))? containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  std::shared_ptr<const int> test1(test0);
+  ComparePrettyPrintToRegex(
+      test1,
+      R"(std::shared_ptr<int> count [3\?], weak [0\?]( \(libc\+\+ missing debug info\))? containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  {
+    std::weak_ptr<const int> test2 = test1;
+    ComparePrettyPrintToRegex(
+        test0,
+        R"(std::shared_ptr<int> count [3\?], weak [1\?]( \(libc\+\+ missing debug info\))? containing = {__ptr_ = 0x[a-f0-9]+})");
+  }
+
+  ComparePrettyPrintToRegex(
+      test0,
+      R"(std::shared_ptr<int> count [3\?], weak [0\?]( \(libc\+\+ missing debug info\))? containing = {__ptr_ = 0x[a-f0-9]+})");
+
+  std::shared_ptr<const int> test3;
+  ComparePrettyPrintToChars(test3, "std::shared_ptr is nullptr");
+}
+
+void streampos_test() {
+  std::streampos test0 = 67;
+  ComparePrettyPrintToRegex(test0, "^std::fpos with stream offset:67( with state: {count:0 value:0})?$");
+  std::istringstream input("testing the input stream here");
+  std::streampos test1 = input.tellg();
+  ComparePrettyPrintToRegex(test1, "^std::fpos with stream offset:0( with state: {count:0 value:0})?$");
+  std::unique_ptr<char[]> buffer(new char[5]);
+  input.read(buffer.get(), 5);
+  test1 = input.tellg();
+  ComparePrettyPrintToRegex(test1, "^std::fpos with stream offset:5( with state: {count:0 value:0})?$");
+}
+
+int main(int, char**) {
+  framework_self_test();
+
+  string_test();
+  a_namespace::string_view_test();
+
+  //u16string_test();
+  u32string_test();
+  tuple_test();
+  unique_ptr_test();
+  shared_ptr_test();
+  bitset_test();
+  list_test();
+  deque_test();
+  map_test();
+  multimap_test();
+  queue_test();
+  priority_queue_test();
+  stack_test();
+  set_test();
+  multiset_test();
+  vector_test();
+  set_iterator_test();
+  map_iterator_test();
+  unordered_set_test();
+  unordered_multiset_test();
+  unordered_map_test();
+  unordered_multimap_test();
+  unordered_map_iterator_test();
+  unordered_set_iterator_test();
+  pointer_negative_test();
+  streampos_test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/include_as_c.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/include_as_c.sh.cpp
new file mode 100644
index 0000000..f649c9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/include_as_c.sh.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// We're building as C, so this test doesn't work when building with modules.
+// UNSUPPORTED: modules-build
+
+// GCC complains about unrecognized arguments because we're compiling the
+// file as C, but we're passing C++ flags on the command-line.
+// UNSUPPORTED: gcc
+
+// Test that the C wrapper headers can be included when compiling them as C.
+
+// NOTE: It's not common or recommended to have libc++ in the header search
+// path when compiling C files, but it does happen often enough.
+
+// RUN: %{cxx} -c -xc %s -fsyntax-only %{flags} %{compile_flags} -std=c99
+
+#include <__config>
+
+#include <complex.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fenv.h>
+#include <float.h>
+#include <inttypes.h>
+#include <limits.h>
+#ifndef _LIBCPP_HAS_NO_LOCALIZATION
+#   include <locale.h>
+#endif
+#include <math.h>
+#include <setjmp.h>
+#include <stdatomic.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+// The clang-shipped tgmath.h header doesn't work with MSVC/UCRT's complex
+// headers in C mode, see PR46207.
+#ifndef _MSC_VER
+#    include <tgmath.h>
+#endif
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+#   include <wchar.h>
+#   include <wctype.h>
+#endif
+
+int main(int argc, char **argv) {
+  (void)argc;
+  (void)argv;
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/algorithm.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/algorithm.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..d2fde39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/algorithm.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <algorithm>
+
+// Test that <algorithm> includes all the other headers it's supposed to.
+
+#include <algorithm>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_ALGORITHM)
+ #   error "<algorithm> was expected to define _LIBCPP_ALGORITHM"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<algorithm> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/array.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/array.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..7ec19fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/array.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <array>
+
+// Test that <array> includes all the other headers it's supposed to.
+
+#include <array>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_ARRAY)
+ #   error "<array> was expected to define _LIBCPP_ARRAY"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<array> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<array> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/bitset.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/bitset.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..c8d413c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/bitset.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <bitset>
+
+// Test that <bitset> includes all the other headers it's supposed to.
+
+#include <bitset>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_BITSET)
+ #   error "<bitset> was expected to define _LIBCPP_BITSET"
+#endif
+#if !defined(_LIBCPP_IOSFWD)
+ #   error "<bitset> should include <iosfwd> in C++03 and later"
+#endif
+#if !defined(_LIBCPP_STRING)
+ #   error "<bitset> should include <string> in C++03 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/chrono.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/chrono.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..ffcaeed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/chrono.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03
+
+// <chrono>
+
+// Test that <chrono> includes all the other headers it's supposed to.
+
+#include <chrono>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_CHRONO)
+ #   error "<chrono> was expected to define _LIBCPP_CHRONO"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<chrono> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/cinttypes.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/cinttypes.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..61c0797
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/cinttypes.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <cinttypes>
+
+// Test that <cinttypes> includes all the other headers it's supposed to.
+
+#include <cinttypes>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_CINTTYPES)
+ #   error "<cinttypes> was expected to define _LIBCPP_CINTTYPES"
+#endif
+#if !defined(_LIBCPP_CSTDINT)
+ #   error "<cinttypes> should include <cstdint> in C++03 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/complex.h.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/complex.h.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..5d2e943
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/complex.h.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <complex.h>
+
+// Test that <complex.h> includes all the other headers it's supposed to.
+
+#include <complex.h>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_COMPLEX_H)
+ #   error "<complex.h> was expected to define _LIBCPP_COMPLEX_H"
+#endif
+#if !defined(_LIBCPP_COMPLEX)
+ #   error "<complex.h> should include <complex> in C++03 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/coroutine.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/coroutine.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..d1ac6f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/coroutine.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <coroutine>
+
+// Test that <coroutine> includes all the other headers it's supposed to.
+
+#include <coroutine>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_COROUTINE)
+ #   error "<coroutine> was expected to define _LIBCPP_COROUTINE"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<coroutine> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/deque.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/deque.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..d1563de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/deque.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <deque>
+
+// Test that <deque> includes all the other headers it's supposed to.
+
+#include <deque>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_DEQUE)
+ #   error "<deque> was expected to define _LIBCPP_DEQUE"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<deque> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<deque> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/filesystem.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/filesystem.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..a726f3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/filesystem.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// <filesystem>
+
+// Test that <filesystem> includes all the other headers it's supposed to.
+
+#include <filesystem>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_FILESYSTEM)
+ #   error "<filesystem> was expected to define _LIBCPP_FILESYSTEM"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<filesystem> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/forward_list.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/forward_list.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..62ea06e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/forward_list.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <forward_list>
+
+// Test that <forward_list> includes all the other headers it's supposed to.
+
+#include <forward_list>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_FORWARD_LIST)
+ #   error "<forward_list> was expected to define _LIBCPP_FORWARD_LIST"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<forward_list> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<forward_list> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/ios.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/ios.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..560c819
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/ios.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <ios>
+
+// Test that <ios> includes all the other headers it's supposed to.
+
+#include <ios>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_IOS)
+ #   error "<ios> was expected to define _LIBCPP_IOS"
+#endif
+#if !defined(_LIBCPP_IOSFWD)
+ #   error "<ios> should include <iosfwd> in C++03 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/iostream.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/iostream.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..a8f223a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/iostream.inclusions.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <iostream>
+
+// Test that <iostream> includes all the other headers it's supposed to.
+
+#include <iostream>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_IOSTREAM)
+ #   error "<iostream> was expected to define _LIBCPP_IOSTREAM"
+#endif
+#if !defined(_LIBCPP_IOS)
+ #   error "<iostream> should include <ios> in C++03 and later"
+#endif
+#if !defined(_LIBCPP_ISTREAM)
+ #   error "<iostream> should include <istream> in C++03 and later"
+#endif
+#if !defined(_LIBCPP_OSTREAM)
+ #   error "<iostream> should include <ostream> in C++03 and later"
+#endif
+#if !defined(_LIBCPP_STREAMBUF)
+ #   error "<iostream> should include <streambuf> in C++03 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/iterator.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/iterator.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..11dfb74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/iterator.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <iterator>
+
+// Test that <iterator> includes all the other headers it's supposed to.
+
+#include <iterator>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_ITERATOR)
+ #   error "<iterator> was expected to define _LIBCPP_ITERATOR"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<iterator> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_CONCEPTS)
+ #   error "<iterator> should include <concepts> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/list.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/list.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..76cb06d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/list.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <list>
+
+// Test that <list> includes all the other headers it's supposed to.
+
+#include <list>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_LIST)
+ #   error "<list> was expected to define _LIBCPP_LIST"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<list> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<list> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/map.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/map.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..319ee46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/map.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <map>
+
+// Test that <map> includes all the other headers it's supposed to.
+
+#include <map>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_MAP)
+ #   error "<map> was expected to define _LIBCPP_MAP"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<map> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<map> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/memory.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/memory.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..6b1cd84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/memory.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <memory>
+
+// Test that <memory> includes all the other headers it's supposed to.
+
+#include <memory>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_MEMORY)
+ #   error "<memory> was expected to define _LIBCPP_MEMORY"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<memory> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/optional.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/optional.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..7a6ff34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/optional.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// Test that <optional> includes all the other headers it's supposed to.
+
+#include <optional>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_OPTIONAL)
+ #   error "<optional> was expected to define _LIBCPP_OPTIONAL"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<optional> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/queue.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/queue.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..f0bf7fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/queue.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <queue>
+
+// Test that <queue> includes all the other headers it's supposed to.
+
+#include <queue>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_QUEUE)
+ #   error "<queue> was expected to define _LIBCPP_QUEUE"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<queue> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<queue> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/random.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/random.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..68da450
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/random.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <random>
+
+// Test that <random> includes all the other headers it's supposed to.
+
+#include <random>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_RANDOM)
+ #   error "<random> was expected to define _LIBCPP_RANDOM"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<random> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/ranges.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/ranges.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..316d141
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/ranges.inclusions.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+// Test that <ranges> includes all the other headers it's supposed to.
+
+#include <ranges>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_RANGES)
+ #   error "<ranges> was expected to define _LIBCPP_RANGES"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<ranges> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<ranges> should include <initializer_list> in C++20 and later"
+#endif
+#if !defined(_LIBCPP_ITERATOR)
+ #   error "<ranges> should include <iterator> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/regex.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/regex.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..f7cf8b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/regex.inclusions.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <regex>
+
+// Test that <regex> includes all the other headers it's supposed to.
+
+#include <regex>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_REGEX)
+ #   error "<regex> was expected to define _LIBCPP_REGEX"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<regex> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<regex> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/set.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/set.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..68350f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/set.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <set>
+
+// Test that <set> includes all the other headers it's supposed to.
+
+#include <set>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_SET)
+ #   error "<set> was expected to define _LIBCPP_SET"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<set> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<set> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/stack.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/stack.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..323abc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/stack.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <stack>
+
+// Test that <stack> includes all the other headers it's supposed to.
+
+#include <stack>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_STACK)
+ #   error "<stack> was expected to define _LIBCPP_STACK"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<stack> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<stack> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/string.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/string.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..d77ee0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/string.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <string>
+
+// Test that <string> includes all the other headers it's supposed to.
+
+#include <string>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_STRING)
+ #   error "<string> was expected to define _LIBCPP_STRING"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<string> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<string> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/string_view.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/string_view.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..a4b999e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/string_view.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <string_view>
+
+// Test that <string_view> includes all the other headers it's supposed to.
+
+#include <string_view>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_STRING_VIEW)
+ #   error "<string_view> was expected to define _LIBCPP_STRING_VIEW"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<string_view> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/system_error.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/system_error.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..5c7f485
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/system_error.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03
+
+// <system_error>
+
+// Test that <system_error> includes all the other headers it's supposed to.
+
+#include <system_error>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_SYSTEM_ERROR)
+ #   error "<system_error> was expected to define _LIBCPP_SYSTEM_ERROR"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<system_error> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/tgmath.h.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/tgmath.h.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..25bc00d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/tgmath.h.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <tgmath.h>
+
+// Test that <tgmath.h> includes all the other headers it's supposed to.
+
+#include <tgmath.h>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_TGMATH_H)
+ #   error "<tgmath.h> was expected to define _LIBCPP_TGMATH_H"
+#endif
+#if !defined(_LIBCPP_CMATH)
+ #   error "<tgmath.h> should include <cmath> in C++03 and later"
+#endif
+#if !defined(_LIBCPP_COMPLEX)
+ #   error "<tgmath.h> should include <complex> in C++03 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/thread.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/thread.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..5e5ad7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/thread.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// Test that <thread> includes all the other headers it's supposed to.
+
+#include <thread>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_THREAD)
+ #   error "<thread> was expected to define _LIBCPP_THREAD"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<thread> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/tuple.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/tuple.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..58f05b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/tuple.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// Test that <tuple> includes all the other headers it's supposed to.
+
+#include <tuple>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_TUPLE)
+ #   error "<tuple> was expected to define _LIBCPP_TUPLE"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<tuple> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/typeindex.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/typeindex.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..1cecb54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/typeindex.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <typeindex>
+
+// Test that <typeindex> includes all the other headers it's supposed to.
+
+#include <typeindex>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_TYPEINDEX)
+ #   error "<typeindex> was expected to define _LIBCPP_TYPEINDEX"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<typeindex> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/unordered_map.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/unordered_map.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..2abddcf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/unordered_map.inclusions.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// Test that <unordered_map> includes all the other headers it's supposed to.
+
+#include <unordered_map>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_UNORDERED_MAP)
+ #   error "<unordered_map> was expected to define _LIBCPP_UNORDERED_MAP"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<unordered_map> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<unordered_map> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/unordered_set.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/unordered_set.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..58bf215
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/unordered_set.inclusions.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// Test that <unordered_set> includes all the other headers it's supposed to.
+
+#include <unordered_set>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_UNORDERED_SET)
+ #   error "<unordered_set> was expected to define _LIBCPP_UNORDERED_SET"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<unordered_set> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<unordered_set> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/utility.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/utility.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..b0e2163
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/utility.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <utility>
+
+// Test that <utility> includes all the other headers it's supposed to.
+
+#include <utility>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_UTILITY)
+ #   error "<utility> was expected to define _LIBCPP_UTILITY"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<utility> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<utility> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/valarray.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/valarray.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..3d3bf91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/valarray.inclusions.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <valarray>
+
+// Test that <valarray> includes all the other headers it's supposed to.
+
+#include <valarray>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_VALARRAY)
+ #   error "<valarray> was expected to define _LIBCPP_VALARRAY"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<valarray> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/variant.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/variant.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..96adb19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/variant.inclusions.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// Test that <variant> includes all the other headers it's supposed to.
+
+#include <variant>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_VARIANT)
+ #   error "<variant> was expected to define _LIBCPP_VARIANT"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<variant> should include <compare> in C++20 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/inclusions/vector.inclusions.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/inclusions/vector.inclusions.compile.pass.cpp
new file mode 100644
index 0000000..2e6b36e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/inclusions/vector.inclusions.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_header_inclusion_tests.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <vector>
+
+// Test that <vector> includes all the other headers it's supposed to.
+
+#include <vector>
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_VECTOR)
+ #   error "<vector> was expected to define _LIBCPP_VECTOR"
+#endif
+#if TEST_STD_VER > 17 && !defined(_LIBCPP_COMPARE)
+ #   error "<vector> should include <compare> in C++20 and later"
+#endif
+#if TEST_STD_VER > 03 && !defined(_LIBCPP_INITIALIZER_LIST)
+ #   error "<vector> should include <initializer_list> in C++11 and later"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/c.files/version_ccstdio.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/c.files/version_ccstdio.pass.cpp
new file mode 100644
index 0000000..99a3a4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/c.files/version_ccstdio.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstdio>
+
+#include <cstdio>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/c.files/version_cinttypes.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/c.files/version_cinttypes.pass.cpp
new file mode 100644
index 0000000..0b7150d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/c.files/version_cinttypes.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cinttypes>
+
+#include <cinttypes>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp
new file mode 100644
index 0000000..27871b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.fail.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template<class charT, class traits = char_traits<charT>>
+//   class basic_filebuf;
+//
+// The char type of the stream and the char_type of the traits have to match
+
+// UNSUPPORTED: no-wide-characters
+
+#include <fstream>
+
+int main(int, char**)
+{
+  std::basic_filebuf<char, std::char_traits<wchar_t> > f;
+  // expected-error-re@streambuf:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.close.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.close.pass.cpp
new file mode 100644
index 0000000..02df694
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.close.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// close();
+
+// Inspired by PR#38052 - std::fstream still good after closing and updating content
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+
+    std::fstream ofs(temp, std::ios::out | std::ios::trunc);
+    ofs << "Hello, World!\n";
+    assert( ofs.good());
+    ofs.close();
+    assert( ofs.good());
+    ofs << "Hello, World!\n";
+    assert(!ofs.good());
+
+    std::remove(temp.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.cons/wchar_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.cons/wchar_pointer.pass.cpp
new file mode 100644
index 0000000..c78d446
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.cons/wchar_pointer.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// explicit basic_fstream(const wchar_t* s, ios_base::openmode mode = ios_base::in | ios_base::out);
+
+// This extension is only provided on Windows.
+// REQUIRES: windows
+// UNSUPPORTED: no-wide-characters
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "wide_temp_file.h"
+
+int main(int, char**) {
+    std::wstring temp = get_wide_temp_file_name();
+    {
+        std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                                | std::ios_base::trunc);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    _wremove(temp.c_str());
+    {
+        std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                                 | std::ios_base::trunc);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    _wremove(temp.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.members/open_wchar_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.members/open_wchar_pointer.pass.cpp
new file mode 100644
index 0000000..3150620
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.members/open_wchar_pointer.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// void open(const wchar_t* s, ios_base::openmode mode = ios_base::in|ios_base::out);
+
+// This extension is only provided on Windows.
+// REQUIRES: windows
+// UNSUPPORTED: no-wide-characters
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "wide_temp_file.h"
+
+int main(int, char**) {
+    std::wstring temp = get_wide_temp_file_name();
+    {
+        std::fstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                        | std::ios_base::trunc);
+        assert(fs.is_open());
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    _wremove(temp.c_str());
+    {
+        std::wfstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                        | std::ios_base::trunc);
+        assert(fs.is_open());
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    _wremove(temp.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.cons/test.dat b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.cons/test.dat
new file mode 100644
index 0000000..64064d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.cons/test.dat
@@ -0,0 +1 @@
+3.25
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.cons/wchar_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.cons/wchar_pointer.pass.cpp
new file mode 100644
index 0000000..18e9b29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.cons/wchar_pointer.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// explicit basic_ifstream(const wchar_t* s, ios_base::openmode mode = ios_base::in);
+
+// This extension is only provided on Windows.
+// REQUIRES: windows
+// UNSUPPORTED: no-wide-characters
+
+// FILE_DEPENDENCIES: test.dat
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::ifstream fs(L"test.dat");
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    // std::ifstream(const wchar_t*, std::ios_base::openmode) is tested in
+    // test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp
+    // which creates writable files.
+    {
+        std::wifstream fs(L"test.dat");
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    // std::wifstream(const wchar_t*, std::ios_base::openmode) is tested in
+    // test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp
+    // which creates writable files.
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.members/open_wchar_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.members/open_wchar_pointer.pass.cpp
new file mode 100644
index 0000000..3fa8a29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.members/open_wchar_pointer.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// void open(const wchar_t* s, ios_base::openmode mode = ios_base::in);
+
+// This extension is only provided on Windows.
+// REQUIRES: windows
+// UNSUPPORTED: no-wide-characters
+
+// FILE_DEPENDENCIES: test.dat
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::ifstream fs;
+        assert(!fs.is_open());
+        char c = 'a';
+        fs >> c;
+        assert(fs.fail());
+        assert(c == 'a');
+        fs.open(L"test.dat");
+        assert(fs.is_open());
+        fs >> c;
+        assert(c == 'r');
+    }
+    {
+        std::wifstream fs;
+        assert(!fs.is_open());
+        wchar_t c = L'a';
+        fs >> c;
+        assert(fs.fail());
+        assert(c == L'a');
+        fs.open(L"test.dat");
+        assert(fs.is_open());
+        fs >> c;
+        assert(c == L'r');
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.members/test.dat b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.members/test.dat
new file mode 100644
index 0000000..1d2f014
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ifstream.members/test.dat
@@ -0,0 +1 @@
+r
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp
new file mode 100644
index 0000000..0d9cab8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// explicit basic_ofstream(const wchar_t* s, ios_base::openmode mode = ios_base::out);
+
+// This extension is only provided on Windows.
+// REQUIRES: windows
+// UNSUPPORTED: no-wide-characters
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "wide_temp_file.h"
+
+int main(int, char**) {
+    std::wstring temp = get_wide_temp_file_name();
+    {
+        std::ofstream fs(temp.c_str());
+        fs << 3.25;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    {
+        std::ifstream fs(temp.c_str(), std::ios_base::out);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    _wremove(temp.c_str());
+    {
+        std::wofstream fs(temp.c_str());
+        fs << 3.25;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    {
+        std::wifstream fs(temp.c_str(), std::ios_base::out);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    _wremove(temp.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.members/open_wchar_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.members/open_wchar_pointer.pass.cpp
new file mode 100644
index 0000000..0bc803a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.members/open_wchar_pointer.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void open(const wchar_t* s, ios_base::openmode mode = ios_base::out);
+
+// This extension is only provided on Windows.
+// REQUIRES: windows
+// UNSUPPORTED: no-wide-characters
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "wide_temp_file.h"
+
+int main(int, char**) {
+    std::wstring temp = get_wide_temp_file_name();
+    {
+        std::ofstream fs;
+        assert(!fs.is_open());
+        char c = 'a';
+        fs << c;
+        assert(fs.fail());
+        fs.open(temp.c_str());
+        assert(fs.is_open());
+        fs << c;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        char c = 0;
+        fs >> c;
+        assert(c == 'a');
+    }
+    _wremove(temp.c_str());
+    {
+        std::wofstream fs;
+        assert(!fs.is_open());
+        wchar_t c = L'a';
+        fs << c;
+        assert(fs.fail());
+        fs.open(temp.c_str());
+        assert(fs.is_open());
+        fs << c;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        wchar_t c = 0;
+        fs >> c;
+        assert(c == L'a');
+    }
+    _wremove(temp.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/traits_mismatch.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/traits_mismatch.fail.cpp
new file mode 100644
index 0000000..ce22fee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/traits_mismatch.fail.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// The char type of the stream and the char_type of the traits have to match
+
+// UNSUPPORTED: no-wide-characters
+
+#include <fstream>
+
+int main(int, char**)
+{
+  std::basic_fstream<char, std::char_traits<wchar_t> > f;
+//  expected-error-re@ios:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+//  expected-error-re@streambuf:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@fstream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@istream:* {{only virtual member functions can be marked 'override'}}
+// expected-error@istream:* {{only virtual member functions can be marked 'override'}}
+
+// FIXME: As of commit r324062 Clang incorrectly generates a diagnostic about mismatching
+// exception specifications for types which are already invalid for one reason or another.
+// For now we tolerate this diagnostic.
+// expected-error@ostream:* 0-1 {{exception specification of overriding function is more lax than base version}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/version.pass.cpp
new file mode 100644
index 0000000..d15a9bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/fstreams/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+#include <fstream>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/file.streams/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.directory_entry/directory_entry.mods/last_write_time.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.directory_entry/directory_entry.mods/last_write_time.pass.cpp
new file mode 100644
index 0000000..9a19c46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.directory_entry/directory_entry.mods/last_write_time.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -I %S/../../../../../../src/filesystem
+
+// This test relies on calling functions from the libcxx internal header
+// filesystem_common.h; the Windows implementation uses different
+// internals and doesn't provide the same set_file_times function as for
+// other platforms.
+// UNSUPPORTED: windows
+
+// This test assumes that time is stored as a 64 bit value when on MVS it is stored as 32 bit
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// <filesystem>
+
+// class directory_entry
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+#include "filesystem_common.h"
+
+using namespace fs::detail;
+
+TEST_SUITE(directory_entry_mods_suite)
+
+TEST_CASE(last_write_time_not_representable_error) {
+  using namespace fs;
+  using namespace std::chrono;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+
+  TimeSpec ToTime;
+  ToTime.tv_sec = std::numeric_limits<decltype(ToTime.tv_sec)>::max();
+  ToTime.tv_nsec = duration_cast<nanoseconds>(seconds(1)).count() - 1;
+
+  std::array<TimeSpec, 2> TS = {ToTime, ToTime};
+
+  file_time_type old_time = last_write_time(file);
+  directory_entry ent(file);
+
+  file_time_type start_time = file_time_type::clock::now() - hours(1);
+  last_write_time(file, start_time);
+
+  TEST_CHECK(ent.last_write_time() == old_time);
+
+  bool IsRepresentable = true;
+  file_time_type rep_value;
+  {
+    std::error_code ec;
+    TEST_REQUIRE(!set_file_times(file, TS, ec));
+    ec.clear();
+    rep_value = last_write_time(file, ec);
+    IsRepresentable = !bool(ec);
+  }
+
+  if (!IsRepresentable) {
+    std::error_code rec = GetTestEC();
+    ent.refresh(rec);
+    TEST_CHECK(!rec);
+
+    const std::errc expected_err = std::errc::value_too_large;
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, expected_err));
+
+    ec = GetTestEC();
+    TEST_CHECK(last_write_time(file, ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, expected_err));
+
+    ExceptionChecker CheckExcept(file, expected_err,
+                                 "directory_entry::last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, CheckExcept,
+                            ent.last_write_time());
+
+  } else {
+    ent.refresh();
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == rep_value);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.itr/assert.iterator.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.itr/assert.iterator.pass.cpp
new file mode 100644
index 0000000..9dc863d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.itr/assert.iterator.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <filesystem>
+
+// class path
+
+#include "filesystem_include.h"
+#include <iterator>
+#include <type_traits>
+#include <cassert>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  // Test incrementing/decrementing a singular iterator
+  {
+    fs::path::iterator singular;
+    TEST_LIBCPP_ASSERT_FAILURE(++singular, "attempting to increment a singular iterator");
+    TEST_LIBCPP_ASSERT_FAILURE(--singular, "attempting to decrement a singular iterator");
+  }
+
+  // Test incrementing the end iterator
+  {
+    fs::path p("foo/bar");
+    auto it = p.begin();
+    TEST_LIBCPP_ASSERT_FAILURE(--it, "attempting to decrement the begin iterator");
+  }
+
+  // Test incrementing the end iterator
+  {
+    fs::path p("foo/bar");
+    auto it = p.end();
+    TEST_LIBCPP_ASSERT_FAILURE(++it, "attempting to increment the end iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.member/path.native.obs/string_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.member/path.native.obs/string_alloc.pass.cpp
new file mode 100644
index 0000000..a9ed30c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.member/path.native.obs/string_alloc.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// template <class ECharT, class Traits = char_traits<ECharT>,
+//           class Allocator = allocator<ECharT>>
+// basic_string<ECharT, Traits, Allocator>
+// string(const Allocator& a = Allocator()) const;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "min_allocator.h"
+#include "filesystem_test_helper.h"
+
+
+// the SSO is always triggered for strings of size 2.
+MultiStringType shortString = MKSTR("a");
+MultiStringType longString = MKSTR("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/123456789/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
+
+template <class CharT>
+void doShortStringTest(MultiStringType const& MS) {
+  using namespace fs;
+  using Ptr = CharT const*;
+  using Str = std::basic_string<CharT>;
+  using Alloc = std::allocator<CharT>;
+  Ptr value = MS;
+  const path p((const char*)MS);
+#ifdef _WIN32
+  // On Windows, charset conversions cause allocations outside of the
+  // provided allocator, but accessing the native type should work without
+  // extra allocations.
+  bool DisableAllocations = std::is_same<CharT, path::value_type>::value;
+#else
+  // On other platforms, these methods only use the provided allocator, and
+  // no extra allocations should be done.
+  bool DisableAllocations = true;
+#endif
+  {
+      DisableAllocationGuard g(DisableAllocations);
+      Str s = p.string<CharT>();
+      assert(s == value);
+      Str s2 = p.string<CharT>(Alloc{});
+      assert(s2 == value);
+  }
+  using MAlloc = malloc_allocator<CharT>;
+  MAlloc::reset();
+  {
+      using Traits = std::char_traits<CharT>;
+      using AStr = std::basic_string<CharT, Traits, MAlloc>;
+      DisableAllocationGuard g(DisableAllocations);
+      AStr s = p.string<CharT, Traits, MAlloc>();
+      assert(s == value);
+      assert(MAlloc::alloc_count == 0);
+      assert(MAlloc::outstanding_alloc() == 0);
+  }
+  MAlloc::reset();
+  { // Other allocator - provided copy
+      using Traits = std::char_traits<CharT>;
+      using AStr = std::basic_string<CharT, Traits, MAlloc>;
+      DisableAllocationGuard g(DisableAllocations);
+      MAlloc a;
+      // don't allow another allocator to be default constructed.
+      MAlloc::disable_default_constructor = true;
+      AStr s = p.string<CharT, Traits, MAlloc>(a);
+      assert(s == value);
+      assert(MAlloc::alloc_count == 0);
+      assert(MAlloc::outstanding_alloc() == 0);
+  }
+  MAlloc::reset();
+}
+
+template <class CharT>
+void doLongStringTest(MultiStringType const& MS) {
+  using namespace fs;
+  using Ptr = CharT const*;
+  using Str = std::basic_string<CharT>;
+  Ptr value = MS;
+  const path p((const char*)MS);
+  { // Default allocator
+      using Alloc = std::allocator<CharT>;
+      Str s = p.string<CharT>();
+      assert(s == value);
+      Str s2 = p.string<CharT>(Alloc{});
+      assert(s2 == value);
+  }
+  using MAlloc = malloc_allocator<CharT>;
+  MAlloc::reset();
+#ifdef _WIN32
+  // On Windows, charset conversions cause allocations outside of the
+  // provided allocator, but accessing the native type should work without
+  // extra allocations.
+  bool DisableAllocations = std::is_same<CharT, path::value_type>::value;
+#else
+  // On other platforms, these methods only use the provided allocator, and
+  // no extra allocations should be done.
+  bool DisableAllocations = true;
+#endif
+
+  { // Other allocator - default construct
+      using Traits = std::char_traits<CharT>;
+      using AStr = std::basic_string<CharT, Traits, MAlloc>;
+      DisableAllocationGuard g(DisableAllocations);
+      AStr s = p.string<CharT, Traits, MAlloc>();
+      assert(s == value);
+      assert(MAlloc::alloc_count > 0);
+      assert(MAlloc::outstanding_alloc() == 1);
+  }
+  MAlloc::reset();
+  { // Other allocator - provided copy
+      using Traits = std::char_traits<CharT>;
+      using AStr = std::basic_string<CharT, Traits, MAlloc>;
+      DisableAllocationGuard g(DisableAllocations);
+      MAlloc a;
+      // don't allow another allocator to be default constructed.
+      MAlloc::disable_default_constructor = true;
+      AStr s = p.string<CharT, Traits, MAlloc>(a);
+      assert(s == value);
+      assert(MAlloc::alloc_count > 0);
+      assert(MAlloc::outstanding_alloc() == 1);
+  }
+  MAlloc::reset();
+  /////////////////////////////////////////////////////////////////////////////
+}
+
+int main(int, char**)
+{
+  using namespace fs;
+  {
+    auto const& S = shortString;
+    doShortStringTest<char>(S);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    doShortStringTest<wchar_t>(S);
+#endif
+    doShortStringTest<char16_t>(S);
+    doShortStringTest<char32_t>(S);
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+    doShortStringTest<char8_t>(S);
+#endif
+  }
+  {
+    auto const& S = longString;
+    doLongStringTest<char>(S);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    doLongStringTest<wchar_t>(S);
+#endif
+    doLongStringTest<char16_t>(S);
+    doLongStringTest<char32_t>(S);
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+    doLongStringTest<char8_t>(S);
+#endif
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.req/is_pathable.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.req/is_pathable.pass.cpp
new file mode 100644
index 0000000..2dbc016
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/class.path/path.req/is_pathable.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// template <class Tp> struct __is_pathable
+
+// [path.req]
+// In addition to the requirements (5), function template parameters named
+// `Source` shall be one of:
+// * basic_string<_ECharT, _Traits, _Alloc>
+// * InputIterator with a value_type of _ECharT
+// * A character array, which points to a NTCTS after array-to-pointer decay.
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+#include "constexpr_char_traits.h"
+
+using fs::__is_pathable;
+
+template <class Tp>
+struct Identity { typedef Tp type; };
+
+template <class Source>
+Identity<Source> CheckSourceType(Source const&);
+
+template <class Tp>
+using GetSourceType = typename decltype(CheckSourceType(std::declval<Tp>()))::type;
+
+template <class Tp, class Exp,
+          class ExpQual = typename std::remove_const<Exp>::type>
+using CheckPass = std::is_same<ExpQual, GetSourceType<Tp>>;
+
+template <class Source>
+using CheckPassSource = std::integral_constant<bool,
+        CheckPass<Source&,        Source>::value &&
+        CheckPass<Source const&,  Source>::value &&
+        CheckPass<Source&&,       Source>::value &&
+        CheckPass<Source const&&, Source>::value
+  >;
+
+template <class CharT>
+struct MakeTestType {
+  using value_type = CharT;
+  using string_type = std::basic_string<CharT>;
+  using string_type2 = std::basic_string<CharT, std::char_traits<CharT>, min_allocator<CharT>>;
+  using string_view_type = std::basic_string_view<CharT>;
+  using string_view_type2 = std::basic_string_view<CharT, constexpr_char_traits<CharT>>;
+  using cstr_type = CharT* const;
+  using const_cstr_type = const CharT*;
+  using array_type = CharT[25];
+  using const_array_type = const CharT[25];
+  using iter_type = cpp17_input_iterator<CharT*>;
+  using bad_iter_type = cpp17_input_iterator<signed char*>;
+
+  template <class TestT>
+  static void AssertPathable() {
+    static_assert(__is_pathable<TestT>::value, "");
+    static_assert(CheckPassSource<TestT>::value, "cannot pass as Source const&");
+    ASSERT_SAME_TYPE(CharT, typename __is_pathable<TestT>::__char_type);
+  }
+
+  template <class TestT>
+  static void AssertNotPathable() {
+    static_assert(!__is_pathable<TestT>::value, "");
+  }
+
+  static void Test() {
+    AssertPathable<string_type>();
+    AssertPathable<string_type2>();
+    AssertPathable<string_view_type>();
+    AssertPathable<string_view_type2>();
+    AssertPathable<cstr_type>();
+    AssertPathable<const_cstr_type>();
+    AssertPathable<array_type>();
+    AssertPathable<const_array_type>();
+    AssertPathable<iter_type>();
+
+    AssertNotPathable<CharT>();
+    AssertNotPathable<bad_iter_type>();
+    AssertNotPathable<signed char*>();
+  }
+};
+
+int main(int, char**) {
+  MakeTestType<char>::Test();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  MakeTestType<wchar_t>::Test();
+#endif
+  MakeTestType<char16_t>::Test();
+  MakeTestType<char32_t>::Test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/convert_file_time.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/convert_file_time.pass.cpp
new file mode 100644
index 0000000..88054f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/convert_file_time.pass.cpp
@@ -0,0 +1,308 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <filesystem>
+
+// typedef TrivialClock file_time_type;
+
+// ADDITIONAL_COMPILE_FLAGS: -I %S/../../../../src/filesystem -Wno-macro-redefined
+
+#include <cassert>
+#include <chrono>
+#include <cstddef>
+#include <filesystem>
+#include <limits>
+#include <string>
+#include <type_traits>
+
+#include "filesystem_common.h"
+
+#ifndef __SIZEOF_INT128__
+#define TEST_HAS_NO_INT128_T
+#endif
+
+using namespace std::chrono;
+namespace fs = std::__fs::filesystem;
+using fs::file_time_type;
+using fs::detail::time_util;
+
+#ifdef TEST_HAS_NO_INT128_T
+static_assert(sizeof(fs::file_time_type::rep) <= 8, "");
+#endif
+
+enum TestKind { TK_128Bit, TK_64Bit, TK_32Bit, TK_FloatingPoint };
+
+template <class TimeT>
+constexpr TestKind getTimeTTestKind() {
+  if (sizeof(TimeT) == 8 && !std::is_floating_point<TimeT>::value)
+    return TK_64Bit;
+  else if (sizeof(TimeT) == 4 && !std::is_floating_point<TimeT>::value)
+    return TK_32Bit;
+  else if (std::is_floating_point<TimeT>::value)
+    return TK_FloatingPoint;
+  else
+    assert(false && "test kind not supported");
+}
+template <class FileTimeT>
+constexpr TestKind getFileTimeTestKind() {
+  using Rep = typename FileTimeT::rep;
+  if (std::is_floating_point<Rep>::value)
+    return TK_FloatingPoint;
+  else if (sizeof(Rep) == 16)
+    return TK_128Bit;
+  else if (sizeof(Rep) == 8)
+    return TK_64Bit;
+  else
+    assert(false && "test kind not supported");
+}
+
+template <class FileTimeT, class TimeT, class TimeSpecT,
+          class Base = time_util<FileTimeT, TimeT, TimeSpecT>,
+          TestKind = getTimeTTestKind<TimeT>(),
+          TestKind = getFileTimeTestKind<FileTimeT>()>
+struct test_case;
+
+template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
+struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_64Bit, TK_128Bit>
+    : public Base {
+
+  using Base::convert_from_timespec;
+  using Base::convert_to_timespec;
+  using Base::is_representable;
+  using Base::max_nsec;
+  using Base::max_seconds;
+  using Base::min_nsec_timespec;
+  using Base::min_seconds;
+
+  static constexpr auto max_time_t = std::numeric_limits<TimeT>::max();
+  static constexpr auto min_time_t = std::numeric_limits<TimeT>::min();
+
+  static constexpr bool test_timespec() {
+    static_assert(is_representable(TimeSpecT{max_time_t, 0}), "");
+    static_assert(is_representable(TimeSpecT{max_time_t, 999999999}), "");
+    static_assert(is_representable(TimeSpecT{max_time_t, 1000000000}), "");
+    static_assert(is_representable(TimeSpecT{max_time_t, max_nsec}), "");
+
+    static_assert(is_representable(TimeSpecT{min_time_t, 0}), "");
+    static_assert(is_representable(TimeSpecT{min_time_t, 999999999}), "");
+    static_assert(is_representable(TimeSpecT{min_time_t, 1000000000}), "");
+    static_assert(is_representable(TimeSpecT{min_time_t, min_nsec_timespec}),
+                  "");
+
+    return true;
+  }
+
+  static constexpr bool test_file_time_type() {
+    // This kinda sucks. Oh well.
+    static_assert(!Base::is_representable(FileTimeT::max()), "");
+    static_assert(!Base::is_representable(FileTimeT::min()), "");
+    return true;
+  }
+
+  static constexpr bool check_round_trip(TimeSpecT orig) {
+    TimeSpecT new_ts = {};
+    FileTimeT out = convert_from_timespec(orig);
+    assert(convert_to_timespec(new_ts, out));
+    return new_ts.tv_sec == orig.tv_sec && new_ts.tv_nsec == orig.tv_nsec;
+  }
+
+  static constexpr bool test_convert_timespec() {
+    static_assert(check_round_trip({0, 0}), "");
+    static_assert(check_round_trip({0, 1}), "");
+    static_assert(check_round_trip({1, 1}), "");
+    static_assert(check_round_trip({-1, 1}), "");
+    static_assert(check_round_trip({max_time_t, max_nsec}), "");
+    static_assert(check_round_trip({max_time_t, 123}), "");
+    static_assert(check_round_trip({min_time_t, min_nsec_timespec}), "");
+    static_assert(check_round_trip({min_time_t, 123}), "");
+    return true;
+  }
+
+  static bool test() {
+    static_assert(test_timespec(), "");
+    static_assert(test_file_time_type(), "");
+    static_assert(test_convert_timespec(), "");
+    return true;
+  }
+};
+
+template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
+struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_32Bit, TK_128Bit>
+    : public test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_64Bit, TK_128Bit> {
+
+};
+
+template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
+struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_64Bit, TK_64Bit>
+    : public Base {
+
+  using Base::convert_from_timespec;
+  using Base::is_representable;
+  using Base::max_nsec;
+  using Base::max_seconds;
+  using Base::min_nsec_timespec;
+  using Base::min_seconds;
+
+  static constexpr auto max_time_t = std::numeric_limits<TimeT>::max();
+  static constexpr auto min_time_t = std::numeric_limits<TimeT>::min();
+
+  static constexpr bool test_timespec() {
+    static_assert(is_representable(TimeSpecT{max_seconds, max_nsec}), "");
+    static_assert(!is_representable(TimeSpecT{max_seconds + 1, 0}), "");
+    static_assert(!is_representable(TimeSpecT{max_seconds, max_nsec + 1}), "");
+    static_assert(!is_representable(TimeSpecT{max_time_t, 0}), "");
+    static_assert(is_representable(TimeSpecT{min_seconds, 0}), "");
+    static_assert(
+        is_representable(TimeSpecT{min_seconds - 1, min_nsec_timespec}), "");
+    static_assert(
+        is_representable(TimeSpecT{min_seconds - 1, min_nsec_timespec + 1}),
+        "");
+    static_assert(
+        !is_representable(TimeSpecT{min_seconds - 1, min_nsec_timespec - 1}),
+        "");
+    static_assert(!is_representable(TimeSpecT{min_time_t, 999999999}), "");
+    return true;
+  }
+
+  static constexpr bool test_file_time_type() {
+    static_assert(Base::is_representable(FileTimeT::max()), "");
+    static_assert(Base::is_representable(FileTimeT::min()), "");
+    return true;
+  }
+
+  static constexpr bool test_convert_timespec() {
+    static_assert(convert_from_timespec(TimeSpecT{max_seconds, max_nsec}) ==
+                      FileTimeT::max(),
+                  "");
+    static_assert(convert_from_timespec(TimeSpecT{max_seconds, max_nsec - 1}) <
+                      FileTimeT::max(),
+                  "");
+    static_assert(convert_from_timespec(TimeSpecT{max_seconds - 1, 999999999}) <
+                      FileTimeT::max(),
+                  "");
+    static_assert(convert_from_timespec(TimeSpecT{
+                      min_seconds - 1, min_nsec_timespec}) == FileTimeT::min(),
+                  "");
+    static_assert(convert_from_timespec(
+                      TimeSpecT{min_seconds - 1, min_nsec_timespec + 1}) >
+                      FileTimeT::min(),
+                  "");
+    static_assert(convert_from_timespec(TimeSpecT{min_seconds, 0}) >
+                      FileTimeT::min(),
+                  "");
+    return true;
+  }
+
+  static bool test() {
+    static_assert(test_timespec(), "");
+    static_assert(test_file_time_type(), "");
+    static_assert(test_convert_timespec(), "");
+    return true;
+  }
+};
+
+template <class FileTimeT, class TimeT, class TimeSpecT, class Base>
+struct test_case<FileTimeT, TimeT, TimeSpecT, Base, TK_32Bit, TK_64Bit>
+    : public Base {
+  static constexpr auto max_time_t = std::numeric_limits<TimeT>::max();
+  static constexpr auto min_time_t = std::numeric_limits<TimeT>::min();
+
+  using Base::convert_from_timespec;
+  using Base::is_representable;
+  using Base::max_nsec;
+  using Base::max_seconds;
+  using Base::min_nsec_timespec;
+  using Base::min_seconds;
+
+  static constexpr bool test_timespec() {
+    static_assert(is_representable(TimeSpecT{max_time_t, 999999999}), "");
+    static_assert(is_representable(TimeSpecT{max_time_t, 1000000000}), "");
+    static_assert(is_representable(TimeSpecT{min_time_t, 0}), "");
+    return true;
+  }
+
+  static constexpr bool test_file_time_type() {
+    static_assert(!is_representable(FileTimeT::max()), "");
+    static_assert(!is_representable(FileTimeT::min()), "");
+    static_assert(is_representable(FileTimeT(seconds(max_time_t))), "");
+    static_assert(is_representable(FileTimeT(seconds(min_time_t))), "");
+    return true;
+  }
+
+  static constexpr bool test_convert_timespec() {
+    // FIXME add tests for 32 bit builds
+    return true;
+  }
+
+  static bool test() {
+    static_assert(test_timespec(), "");
+    static_assert(test_file_time_type(), "");
+    static_assert(test_convert_timespec(), "");
+    return true;
+  }
+};
+
+template <class FileTimeT, class TimeT, class TimeSpec, class Base,
+          TestKind FileTimeTKind>
+struct test_case<FileTimeT, TimeT, TimeSpec, Base, TK_FloatingPoint,
+                 FileTimeTKind> : public Base {
+
+  static bool test() { return true; }
+};
+
+template <class TimeT, class NSecT = long>
+struct TestTimeSpec {
+  TimeT tv_sec;
+  NSecT tv_nsec;
+};
+
+template <class Dur>
+struct TestClock {
+  typedef Dur duration;
+  typedef typename duration::rep rep;
+  typedef typename duration::period period;
+  typedef std::chrono::time_point<TestClock> time_point;
+  static constexpr const bool is_steady = false;
+
+  static time_point now() noexcept { return {}; }
+};
+
+template <class IntType, class Period = std::micro>
+using TestFileTimeT = time_point<TestClock<duration<IntType, Period> > >;
+
+int main(int, char**) {
+  { assert((test_case<file_time_type, time_t, struct timespec>::test())); }
+  {
+    assert((test_case<TestFileTimeT<int64_t>, int64_t,
+                      TestTimeSpec<int64_t, long> >::test()));
+  }
+  {
+    assert((test_case<TestFileTimeT<long long>, int32_t,
+                      TestTimeSpec<int32_t, int32_t> >::test()));
+  }
+  {
+    // Test that insane platforms like ppc64 linux, which use long double as time_t,
+    // at least compile.
+    assert((test_case<TestFileTimeT<long double>, double,
+                      TestTimeSpec<long double, long> >::test()));
+  }
+#ifndef TEST_HAS_NO_INT128_T
+  {
+    assert((test_case<TestFileTimeT<__int128_t, std::nano>, int64_t,
+                      TestTimeSpec<int64_t, long> >::test()));
+  }
+  {
+    assert((test_case<TestFileTimeT<__int128_t, std::nano>, int32_t,
+                      TestTimeSpec<int32_t, int32_t> >::test()));
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/lit.local.cfg
new file mode 100644
index 0000000..4eadb33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/lit.local.cfg
@@ -0,0 +1,4 @@
+# Load the same local configuration as the filesystem tests in libcxx/test/std
+import os
+std_filesystem_tests = os.path.join(config.test_source_root, 'std', 'input.output', 'filesystems')
+config.load_from_path(os.path.join(std_filesystem_tests, 'lit.local.cfg'), lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/version.pass.cpp
new file mode 100644
index 0000000..a9db5b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/filesystems/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <filesystem>
+
+#include <filesystem>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/input.streams/traits_mismatch.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/input.streams/traits_mismatch.fail.cpp
new file mode 100644
index 0000000..273dd0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/input.streams/traits_mismatch.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream;
+
+// The char type of the stream and the char_type of the traits have to match
+
+// UNSUPPORTED: no-wide-characters
+
+#include <istream>
+#include <type_traits>
+#include <cassert>
+
+struct test_istream
+    : public std::basic_istream<char, std::char_traits<wchar_t> > {};
+
+
+int main(int, char**)
+{
+//  expected-error-re@ios:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+//  expected-error@istream:* {{only virtual member functions can be marked 'override'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/input.streams/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/input.streams/version.pass.cpp
new file mode 100644
index 0000000..74ef7b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/input.streams/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+#include <istream>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/output.streams/traits_mismatch.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/output.streams/traits_mismatch.fail.cpp
new file mode 100644
index 0000000..9afcde0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/output.streams/traits_mismatch.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream;
+
+// The char type of the stream and the char_type of the traits have to match
+
+// UNSUPPORTED: no-wide-characters
+
+#include <ostream>
+#include <type_traits>
+#include <cassert>
+
+struct test_ostream
+    : public std::basic_ostream<char, std::char_traits<wchar_t> > {};
+
+
+int main(int, char**)
+{
+//  expected-error-re@ios:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+//  expected-error@ostream:* {{only virtual member functions can be marked 'override'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/output.streams/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/output.streams/version.pass.cpp
new file mode 100644
index 0000000..120cbe4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/output.streams/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+#include <ostream>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/std.manip/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/std.manip/version.pass.cpp
new file mode 100644
index 0000000..fa1df70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.format/std.manip/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+#include <iomanip>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.forward/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.forward/version.pass.cpp
new file mode 100644
index 0000000..b843a18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.forward/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iosfwd>
+
+#include <iosfwd>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.objects/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.objects/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.objects/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.objects/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.objects/version.pass.cpp
new file mode 100644
index 0000000..628970e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostream.objects/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+#include <iostream>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/ios/iostate.flags/clear.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/ios/iostate.flags/clear.abort.pass.cpp
new file mode 100644
index 0000000..8f0f5a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/ios/iostate.flags/clear.abort.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// void clear(iostate state);
+
+// Make sure that we abort() when exceptions are disabled and the exception
+// flag is set for the iostate we pass to clear().
+
+// REQUIRES: no-exceptions
+
+#include <csignal>
+#include <cstdlib>
+#include <ios>
+#include <streambuf>
+
+#include "test_macros.h"
+
+
+void exit_success(int) {
+    std::_Exit(EXIT_SUCCESS);
+}
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**) {
+    std::signal(SIGABRT, exit_success);
+
+    testbuf buf;
+    std::ios ios(&buf);
+    ios.exceptions(std::ios::badbit);
+    ios.clear(std::ios::badbit);
+
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/version.pass.cpp
new file mode 100644
index 0000000..f64419c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/iostreams.base/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+#include <ios>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/stream.buffers/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/stream.buffers/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/stream.buffers/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/stream.buffers/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/stream.buffers/version.pass.cpp
new file mode 100644
index 0000000..94019e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/stream.buffers/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+#include <streambuf>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/traits_mismatch.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/traits_mismatch.fail.cpp
new file mode 100644
index 0000000..23ab5f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/traits_mismatch.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+//  template<class charT, class traits = char_traits<charT>,
+//           class Allocator = allocator<charT>>
+//    class basic_stringbuf;
+//
+// The char type of the stream and the char_type of the traits have to match
+
+// UNSUPPORTED: no-wide-characters
+
+#include <sstream>
+
+int main(int, char**)
+{
+  std::basic_stringbuf<char, std::char_traits<wchar_t> > sb;
+//  expected-error-re@streambuf:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+//  expected-error-re@string:* {{{{(static_assert|static assertion)}} failed{{.*}}traits_type::char_type must be the same type as CharT}}
+
+  // expected-error@sstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@sstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@sstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@sstream:* {{only virtual member functions can be marked 'override'}}
+  // expected-error@sstream:* {{only virtual member functions can be marked 'override'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/version.pass.cpp
new file mode 100644
index 0000000..a0044b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/input.output/string.streams/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+#include <sstream>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.advance.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.advance.pass.cpp
new file mode 100644
index 0000000..715aebe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.advance.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <list>
+
+// Call advance(non-bidi iterator, -1)
+
+#include <iterator>
+
+#include "check_assertion.h"
+#include "test_iterators.h"
+
+int main(int, char**) {
+    int a[] = {1, 2, 3};
+
+    bidirectional_iterator<int *> bidi(a+1);
+    std::advance(bidi,  1);  // should work fine
+    std::advance(bidi,  0);  // should work fine
+    std::advance(bidi, -1);  // should work fine
+
+    forward_iterator<int *> it(a+1);
+    std::advance(it, 1);  // should work fine
+    std::advance(it, 0);  // should work fine
+    TEST_LIBCPP_ASSERT_FAILURE(std::advance(it, -1), "Attempt to advance(it, n) with negative n on a non-bidirectional iterator");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.next.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.next.pass.cpp
new file mode 100644
index 0000000..6a5328e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.next.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <list>
+
+// Call next(non-bidi iterator, -1)
+
+#include <iterator>
+
+#include "check_assertion.h"
+#include "test_iterators.h"
+
+int main(int, char**) {
+    int a[] = {1, 2, 3};
+    forward_iterator<int *> it(a+1);
+    std::next(it, 1);  // should work fine
+    std::next(it, 0);  // should work fine
+    TEST_LIBCPP_ASSERT_FAILURE(std::next(it, -1), "Attempt to next(it, n) with negative n on a non-bidirectional iterator");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.prev.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.prev.pass.cpp
new file mode 100644
index 0000000..5e5723c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/assert.prev.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <list>
+
+// Call prev(forward_iterator, -1)
+
+#include <iterator>
+
+#include "check_assertion.h"
+#include "test_iterators.h"
+
+int main(int, char**) {
+    int a[] = {1, 2, 3};
+
+    bidirectional_iterator<int *> bidi(a+1);
+    std::prev(bidi, -1);  // should work fine
+    std::prev(bidi,  0);  // should work fine
+    std::prev(bidi,  1);  // should work fine
+
+    forward_iterator<int *> it(a+1);
+    std::prev(it, -1); // should work fine
+    std::prev(it,  0); // should work fine
+    TEST_LIBCPP_ASSERT_FAILURE(std::prev(it, 1), "Attempt to prev(it, n) with a positive n on a non-bidirectional iterator");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/arithmetic.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/arithmetic.pass.cpp
new file mode 100644
index 0000000..feaef53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/arithmetic.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template <class _Iterator>
+// struct __bounded_iter;
+//
+// Arithmetic operators
+
+#include <cstddef>
+#include <iterator>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class Iter>
+TEST_CONSTEXPR_CXX14 bool tests() {
+  int array[] = {40, 41, 42, 43, 44};
+  int* b      = array + 0;
+  int* e      = array + 5;
+
+  // ++it
+  {
+    std::__bounded_iter<Iter> iter    = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter>& result = ++iter;
+    assert(&result == &iter);
+    assert(*iter == 41);
+  }
+  // it++
+  {
+    std::__bounded_iter<Iter> iter   = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> result = iter++;
+    assert(*result == 40);
+    assert(*iter == 41);
+  }
+  // --it
+  {
+    std::__bounded_iter<Iter> iter    = std::__make_bounded_iter(Iter(b + 3), Iter(b), Iter(e));
+    std::__bounded_iter<Iter>& result = --iter;
+    assert(&result == &iter);
+    assert(*iter == 42);
+  }
+  // it--
+  {
+    std::__bounded_iter<Iter> iter   = std::__make_bounded_iter(Iter(b + 3), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> result = iter--;
+    assert(*result == 43);
+    assert(*iter == 42);
+  }
+  // it += n
+  {
+    std::__bounded_iter<Iter> iter    = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter>& result = (iter += 3);
+    assert(&result == &iter);
+    assert(*iter == 43);
+  }
+  // it + n
+  {
+    std::__bounded_iter<Iter> iter   = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> result = iter + 3;
+    assert(*iter == 40);
+    assert(*result == 43);
+  }
+  // n + it
+  {
+    std::__bounded_iter<Iter> iter   = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> result = 3 + iter;
+    assert(*iter == 40);
+    assert(*result == 43);
+  }
+  // it -= n
+  {
+    std::__bounded_iter<Iter> iter    = std::__make_bounded_iter(Iter(b + 3), Iter(b), Iter(e));
+    std::__bounded_iter<Iter>& result = (iter -= 3);
+    assert(&result == &iter);
+    assert(*iter == 40);
+  }
+  // it - n
+  {
+    std::__bounded_iter<Iter> iter   = std::__make_bounded_iter(Iter(b + 3), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> result = iter - 3;
+    assert(*iter == 43);
+    assert(*result == 40);
+  }
+  // it - it
+  {
+    std::__bounded_iter<Iter> iter1 = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> iter2 = std::__make_bounded_iter(Iter(e), Iter(b), Iter(e));
+    std::ptrdiff_t result           = iter2 - iter1;
+    assert(result == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests<int*>();
+#if TEST_STD_VER > 11
+  static_assert(tests<int*>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+  tests<contiguous_iterator<int*> >();
+  static_assert(tests<contiguous_iterator<int*> >(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/comparison.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/comparison.pass.cpp
new file mode 100644
index 0000000..f4b0da9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/comparison.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template <class _Iterator>
+// struct __bounded_iter;
+//
+// Comparison operators
+
+#include <iterator>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class Iter>
+TEST_CONSTEXPR_CXX14 bool tests() {
+  int array[]                           = {0, 1, 2, 3, 4};
+  int* b                                = array + 0;
+  int* e                                = array + 5;
+  std::__bounded_iter<Iter> const iter1 = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+  std::__bounded_iter<Iter> const iter2 = std::__make_bounded_iter(Iter(e), Iter(b), Iter(e));
+
+  // operator==
+  {
+    assert(iter1 == iter1);
+    assert(!(iter1 == iter2));
+  }
+  // operator!=
+  {
+    assert(iter1 != iter2);
+    assert(!(iter1 != iter1));
+  }
+  // operator<
+  {
+    assert(iter1 < iter2);
+    assert(!(iter2 < iter1));
+    assert(!(iter1 < iter1));
+  }
+  // operator>
+  {
+    assert(iter2 > iter1);
+    assert(!(iter1 > iter2));
+    assert(!(iter1 > iter1));
+  }
+  // operator<=
+  {
+    assert(iter1 <= iter2);
+    assert(!(iter2 <= iter1));
+    assert(iter1 <= iter1);
+  }
+  // operator>=
+  {
+    assert(iter2 >= iter1);
+    assert(!(iter1 >= iter2));
+    assert(iter1 >= iter1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests<int*>();
+#if TEST_STD_VER > 11
+  static_assert(tests<int*>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+  tests<contiguous_iterator<int*> >();
+  static_assert(tests<contiguous_iterator<int*> >(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/dereference.pass.cpp
new file mode 100644
index 0000000..d426148
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/dereference.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template <class _Iterator>
+// struct __bounded_iter;
+//
+// Dereference and indexing operators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <iterator>
+
+#include "check_assertion.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+struct Foo {
+  int x;
+  TEST_CONSTEXPR bool operator==(Foo const& other) const { return x == other.x; }
+};
+
+template <class Iter>
+TEST_CONSTEXPR_CXX14 bool tests() {
+  Foo array[]                           = {Foo{40}, Foo{41}, Foo{42}, Foo{43}, Foo{44}};
+  Foo* b                                = array + 0;
+  Foo* e                                = array + 5;
+  std::__bounded_iter<Iter> const iter1 = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+  std::__bounded_iter<Iter> const iter2 = std::__make_bounded_iter(Iter(e), Iter(b), Iter(e));
+
+  // operator*
+  assert(*iter1 == Foo{40});
+  // operator->
+  assert(iter1->x == 40);
+  // operator[]
+  assert(iter1[0] == Foo{40});
+  assert(iter1[1] == Foo{41});
+  assert(iter1[2] == Foo{42});
+  assert(iter2[-1] == Foo{44});
+  assert(iter2[-2] == Foo{43});
+
+  return true;
+}
+
+template <class Iter>
+void test_death() {
+  Foo array[]                          = {Foo{0}, Foo{1}, Foo{2}, Foo{3}, Foo{4}};
+  Foo* b                               = array + 0;
+  Foo* e                               = array + 5;
+  std::__bounded_iter<Iter> const iter = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+  std::__bounded_iter<Iter> const oob  = std::__make_bounded_iter(Iter(e), Iter(b), Iter(e));
+
+  // operator*
+  TEST_LIBCPP_ASSERT_FAILURE(*oob, "__bounded_iter::operator*: Attempt to dereference an out-of-range iterator");
+  // operator->
+  TEST_LIBCPP_ASSERT_FAILURE(oob->x, "__bounded_iter::operator->: Attempt to dereference an out-of-range iterator");
+  // operator[]
+  TEST_LIBCPP_ASSERT_FAILURE(iter[-1], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+  TEST_LIBCPP_ASSERT_FAILURE(iter[5], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+  TEST_LIBCPP_ASSERT_FAILURE(oob[0], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+  TEST_LIBCPP_ASSERT_FAILURE(oob[1], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+  TEST_LIBCPP_ASSERT_FAILURE(oob[-6], "__bounded_iter::operator[]: Attempt to index an iterator out-of-range");
+}
+
+int main(int, char**) {
+  tests<Foo*>();
+  test_death<Foo*>();
+#if TEST_STD_VER > 11
+  static_assert(tests<Foo*>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+  tests<contiguous_iterator<Foo*> >();
+  test_death<contiguous_iterator<Foo*> >();
+  static_assert(tests<contiguous_iterator<Foo*> >(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/pointer_traits.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/pointer_traits.pass.cpp
new file mode 100644
index 0000000..6ae0928
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/pointer_traits.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template <class _Iterator>
+// struct __bounded_iter;
+//
+// std::pointer_traits specialization
+
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class Iter>
+TEST_CONSTEXPR_CXX14 bool tests() {
+  using BoundedIter = std::__bounded_iter<Iter>;
+  using PointerTraits = std::pointer_traits<BoundedIter>;
+  using BasePointerTraits = std::pointer_traits<Iter>;
+  static_assert(std::is_same<typename PointerTraits::pointer, BoundedIter>::value, "");
+  static_assert(std::is_same<typename PointerTraits::element_type, typename BasePointerTraits::element_type>::value, "");
+  static_assert(std::is_same<typename PointerTraits::difference_type, typename BasePointerTraits::difference_type>::value, "");
+
+  {
+    int array[]                           = {0, 1, 2, 3, 4};
+    int* b                                = array + 0;
+    int* e                                = array + 5;
+    std::__bounded_iter<Iter> const iter1 = std::__make_bounded_iter(Iter(b), Iter(b), Iter(e));
+    std::__bounded_iter<Iter> const iter2 = std::__make_bounded_iter(Iter(e), Iter(b), Iter(e));
+    assert(std::__to_address(iter1) == b); // in-bounds iterator
+    assert(std::__to_address(iter2) == e); // out-of-bounds iterator
+#if TEST_STD_VER > 17
+    assert(std::to_address(iter1) == b); // in-bounds iterator
+    assert(std::to_address(iter2) == e); // out-of-bounds iterator
+#endif
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests<int*>();
+#if TEST_STD_VER > 11
+  static_assert(tests<int*>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+  tests<contiguous_iterator<int*> >();
+  static_assert(tests<contiguous_iterator<int*> >(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/types.compile.pass.cpp
new file mode 100644
index 0000000..db95513
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/bounded_iter/types.compile.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template <class _Iterator>
+// struct __bounded_iter;
+//
+// Nested types
+
+#include <cstddef>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 17
+struct Iterator {
+  struct value_type {};
+  using difference_type = int;
+  struct pointer {};
+  using reference = value_type&;
+  struct iterator_category : std::random_access_iterator_tag {};
+  using iterator_concept = std::contiguous_iterator_tag;
+};
+
+using BoundedIter1 = std::__bounded_iter<Iterator>;
+static_assert(std::is_same<BoundedIter1::value_type, Iterator::value_type>::value, "");
+static_assert(std::is_same<BoundedIter1::difference_type, Iterator::difference_type>::value, "");
+static_assert(std::is_same<BoundedIter1::pointer, Iterator::pointer>::value, "");
+static_assert(std::is_same<BoundedIter1::reference, Iterator::reference>::value, "");
+static_assert(std::is_same<BoundedIter1::iterator_category, Iterator::iterator_category>::value, "");
+static_assert(std::is_same<BoundedIter1::iterator_concept, Iterator::iterator_concept>::value, "");
+#endif
+
+
+using BoundedIter2 = std::__bounded_iter<int*>;
+static_assert(std::is_same<BoundedIter2::value_type, int>::value, "");
+static_assert(std::is_same<BoundedIter2::difference_type, std::ptrdiff_t>::value, "");
+static_assert(std::is_same<BoundedIter2::pointer, int*>::value, "");
+static_assert(std::is_same<BoundedIter2::reference, int&>::value, "");
+static_assert(std::is_same<BoundedIter2::iterator_category, std::random_access_iterator_tag>::value, "");
+#if TEST_STD_VER > 17
+static_assert(std::is_same<BoundedIter2::iterator_concept, std::contiguous_iterator_tag>::value, "");
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/contiguous_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/contiguous_iterators.pass.cpp
new file mode 100644
index 0000000..892ea2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/contiguous_iterators.pass.cpp
@@ -0,0 +1,265 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <iterator>
+
+// __is_cpp17_contiguous_iterator<_Tp>
+
+// __is_cpp17_contiguous_iterator determines if an iterator is contiguous,
+// either because it advertises itself as such (in C++20) or because it
+// is a pointer type or a known trivial wrapper around a pointer type,
+// such as __wrap_iter<T*>.
+//
+
+#include <cassert>
+#include <deque>
+#include <initializer_list>
+#include <iterator>
+#include <string>
+#include <vector>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER >= 17
+#include <string_view>
+#endif
+
+#if TEST_STD_VER >= 20
+#include <span>
+#endif
+
+class T;  // incomplete
+
+class my_input_iterator
+{
+    struct tag : std::input_iterator_tag {};
+    typedef my_input_iterator Self;
+    int *state_;
+public:
+    typedef tag iterator_category;
+    typedef int value_type;
+    typedef int difference_type;
+    typedef int* pointer;
+    typedef int& reference;
+
+    my_input_iterator();
+    reference operator*() const;
+    pointer operator->() const;
+
+    Self& operator++();
+    Self operator++(int);
+    friend bool operator==(const Self&, const Self&);
+    friend bool operator!=(const Self&, const Self&);
+};
+
+class my_random_access_iterator
+{
+    struct tag : std::random_access_iterator_tag {};
+    typedef my_random_access_iterator Self;
+    int *state_;
+public:
+    typedef tag iterator_category;
+    typedef int value_type;
+    typedef int difference_type;
+    typedef int* pointer;
+    typedef int& reference;
+
+    my_random_access_iterator();
+    reference operator*() const;
+    pointer operator->() const;
+    reference operator[](difference_type) const;
+
+    Self& operator++();
+    Self operator++(int);
+    Self& operator--();
+    Self operator--(int);
+    friend Self& operator+=(Self&, difference_type);
+    friend Self& operator-=(Self&, difference_type);
+    friend Self operator+(Self, difference_type);
+    friend Self operator+(difference_type, Self);
+    friend Self operator-(Self, difference_type);
+    friend difference_type operator-(Self, Self);
+    friend bool operator==(const Self&, const Self&);
+    friend bool operator!=(const Self&, const Self&);
+    friend bool operator<(const Self&, const Self&);
+    friend bool operator>(const Self&, const Self&);
+    friend bool operator<=(const Self&, const Self&);
+    friend bool operator>=(const Self&, const Self&);
+};
+
+#if TEST_STD_VER >= 20
+class my_contiguous_iterator
+{
+    struct tag : std::contiguous_iterator_tag {};
+    typedef my_contiguous_iterator Self;
+    int *state_;
+public:
+    typedef tag iterator_category;
+    typedef int value_type;
+    typedef int difference_type;
+    typedef int* pointer;
+    typedef int& reference;
+    typedef int element_type;  // enable to_address via pointer_traits
+
+    my_contiguous_iterator();
+    reference operator*() const;
+    pointer operator->() const;
+    reference operator[](difference_type) const;
+
+    Self& operator++();
+    Self operator++(int);
+    Self& operator--();
+    Self operator--(int);
+    friend Self& operator+=(Self&, difference_type);
+    friend Self& operator-=(Self&, difference_type);
+    friend Self operator+(Self, difference_type);
+    friend Self operator+(difference_type, Self);
+    friend Self operator-(Self, difference_type);
+    friend difference_type operator-(Self, Self);
+    friend bool operator==(const Self&, const Self&);
+    friend bool operator!=(const Self&, const Self&);
+    friend bool operator<(const Self&, const Self&);
+    friend bool operator>(const Self&, const Self&);
+    friend bool operator<=(const Self&, const Self&);
+    friend bool operator>=(const Self&, const Self&);
+};
+#endif
+
+struct fake_deque_iterator : std::deque<int>::iterator {
+    using element_type = int;
+};
+static_assert(std::__is_cpp17_random_access_iterator<fake_deque_iterator>::value, "");
+static_assert(!std::__is_cpp17_contiguous_iterator<fake_deque_iterator>::value, "");
+
+#if TEST_STD_VER >= 20
+struct fake2_deque_iterator : std::deque<int>::iterator {
+    using iterator_concept = std::contiguous_iterator_tag;
+    using element_type = int;
+};
+static_assert(std::__is_cpp17_random_access_iterator<fake2_deque_iterator>::value, "");
+static_assert(std::__is_cpp17_contiguous_iterator<fake2_deque_iterator>::value, "");
+#endif
+
+int main(int, char**)
+{
+//  basic tests
+    static_assert(( std::__is_cpp17_contiguous_iterator<char *>::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<const char *>::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<int *>::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<int **>::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<T *>::value), "");
+
+    static_assert((!std::__is_cpp17_contiguous_iterator<my_input_iterator>::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<my_random_access_iterator>::value), "");
+#if TEST_STD_VER >= 20
+    static_assert(( std::__is_cpp17_contiguous_iterator<my_contiguous_iterator>::value), "");
+#endif
+
+    // move_iterator changes value category, which makes it pretty sketchy to use in optimized codepaths
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::move_iterator<char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::move_iterator<const char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::move_iterator<int *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::move_iterator<T *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::move_iterator<my_random_access_iterator> >::value), "");
+#if TEST_STD_VER >= 20
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::move_iterator<my_contiguous_iterator> >::value), "");
+#endif
+
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::reverse_iterator<char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::reverse_iterator<const char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::reverse_iterator<int *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::reverse_iterator<T *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::reverse_iterator<my_random_access_iterator> >::value), "");
+#if TEST_STD_VER >= 20
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::reverse_iterator<my_contiguous_iterator> >::value), "");
+#endif
+
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<char *> >::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<const char *> >::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<int *> >::value), "");
+
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<T *> >::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<std::__wrap_iter<T *> > >::value), "");
+
+    // Here my_random_access_iterator is standing in for some user's fancy pointer type, written pre-C++20.
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<my_random_access_iterator> >::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<std::__wrap_iter<my_random_access_iterator> > >::value), "");
+
+#if TEST_STD_VER >= 20
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<my_contiguous_iterator> >::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<std::__wrap_iter<my_contiguous_iterator> > >::value), "");
+#endif
+
+//  iterators in the libc++ test suite
+    static_assert((!std::__is_cpp17_contiguous_iterator<cpp17_output_iterator <char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<cpp17_input_iterator  <char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<forward_iterator      <char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<bidirectional_iterator<char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<random_access_iterator<char *> >::value), "");
+#if TEST_STD_VER >= 20
+    static_assert(( std::__is_cpp17_contiguous_iterator<contiguous_iterator   <char *> >::value), "");
+#endif
+    static_assert((!std::__is_cpp17_contiguous_iterator<ThrowingIterator      <char *> >::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<NonThrowingIterator   <char *> >::value), "");
+
+//
+//  iterators from libc++'s containers
+//
+
+//  vector
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::vector<int>::iterator>                   ::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::vector<int>::const_iterator>             ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::vector<int>::reverse_iterator>           ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::vector<int>::const_reverse_iterator>     ::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::__wrap_iter<std::vector<int>::iterator> >::value), "");
+
+//  string
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::string::iterator>              ::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::string::const_iterator>        ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::string::reverse_iterator>      ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::string::const_reverse_iterator>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::wstring::iterator>              ::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::wstring::const_iterator>        ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::wstring::reverse_iterator>      ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::wstring::const_reverse_iterator>::value), "");
+#endif
+
+//  deque is random-access but not contiguous
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::deque<int>::iterator>                   ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::deque<int>::const_iterator>             ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::deque<int>::reverse_iterator>           ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::deque<int>::const_reverse_iterator>     ::value), "");
+
+//  vector<bool> is random-access but not contiguous
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::vector<bool>::iterator>                   ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::vector<bool>::const_iterator>             ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::vector<bool>::reverse_iterator>           ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::vector<bool>::const_reverse_iterator>     ::value), "");
+
+#if TEST_STD_VER >= 11
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::initializer_list<int>::iterator>      ::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::initializer_list<int>::const_iterator>::value), "");
+#endif
+
+#if TEST_STD_VER >= 17
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::string_view::iterator>      ::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::string_view::const_iterator>::value), "");
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::span<      int>::iterator>        ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::span<      int>::reverse_iterator>::value), "");
+    static_assert(( std::__is_cpp17_contiguous_iterator<std::span<const int>::iterator>        ::value), "");
+    static_assert((!std::__is_cpp17_contiguous_iterator<std::span<const int>::reverse_iterator>::value), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.concepts/iterator.concept.random.access/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.concepts/iterator.concept.random.access/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..601f60b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.concepts/iterator.concept.random.access/subsumption.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept random_access_iterator;
+
+#include <iterator>
+
+#include <concepts>
+
+template<std::bidirectional_iterator I>
+requires std::derived_from<std::_ITER_CONCEPT<I>, std::random_access_iterator_tag>
+constexpr bool check_subsumption() {
+  return false;
+}
+
+template<std::random_access_iterator>
+constexpr bool check_subsumption() {
+  return true;
+}
+
+static_assert(check_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_bidirectional_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_bidirectional_iterator.compile.pass.cpp
new file mode 100644
index 0000000..7ba8c75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_bidirectional_iterator.compile.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test uses iterator types from std::filesystem, which were introduced in macOS 10.15.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// template<class I>
+// concept __iterator_traits_detail::__cpp17_bidirectional_iterator;
+
+#include <iterator>
+
+#include <array>
+#include <deque>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+#include <filesystem>
+#endif
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "iterator_traits_cpp17_iterators.h"
+
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_proxy_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_input_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_proxy_input_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_forward_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_bidirectional_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<iterator_traits_cpp17_random_access_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int*>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int const*>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int volatile*>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int const volatile*>);
+
+// <array>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::array<int, 10>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::array<int, 10>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::array<int, 10>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::array<int, 10>::const_reverse_iterator>);
+
+// <deque>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::deque<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::deque<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::deque<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::deque<int>::const_reverse_iterator>);
+
+// <filesystem>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::filesystem::directory_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::filesystem::recursive_directory_iterator>);
+#endif
+
+// <forward_list>
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::forward_list<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::forward_list<int>::const_iterator>);
+
+// <iterator>
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::back_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::front_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::move_iterator<int*>>);
+
+// <list>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::list<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::list<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::list<int>::const_reverse_iterator>);
+
+// <map>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::map<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::map<int, int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multimap<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multimap<int, int>::const_reverse_iterator>);
+
+// <set>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::set<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::set<int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multiset<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::multiset<int>::const_reverse_iterator>);
+
+// <string>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string::const_reverse_iterator>);
+
+// <string_view>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string_view::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string_view::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string_view::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::string_view::const_reverse_iterator>);
+
+// <unordered_map>
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_map<int, int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_map<int, int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_map<int, int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_map<int, int>::const_local_iterator>);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multimap<int, int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multimap<int, int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multimap<int, int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multimap<int, int>::const_local_iterator>);
+
+// <unordered_set>
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_set<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_set<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_set<int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_set<int>::const_local_iterator>);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multiset<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multiset<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multiset<int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::unordered_multiset<int>::const_local_iterator>);
+
+// <vector>
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::const_reverse_iterator>);
+
+// Not iterators
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<void>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<void*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int* const>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::iterator volatile>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::iterator&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::vector<int>::iterator&&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int[]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int[10]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int (*)()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int (&)()>);
+
+struct S {};
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<S>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int S::*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_bidirectional_iterator<int (S::*)()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_forward_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_forward_iterator.compile.pass.cpp
new file mode 100644
index 0000000..7a2000a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_forward_iterator.compile.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test uses iterator types from std::filesystem, which were introduced in macOS 10.15.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// template<class I>
+// concept __iterator_traits_detail::__cpp17_forward_iterator;
+
+#include <iterator>
+
+#include <array>
+#include <deque>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+#include <filesystem>
+#endif
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "iterator_traits_cpp17_iterators.h"
+
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_proxy_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_input_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_proxy_input_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_forward_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_bidirectional_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<iterator_traits_cpp17_random_access_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<int*>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<int const*>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<int volatile*>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<int const volatile*>);
+
+// <array>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::array<int, 10>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::array<int, 10>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::array<int, 10>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::array<int, 10>::const_reverse_iterator>);
+
+// <deque>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::deque<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::deque<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::deque<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::deque<int>::const_reverse_iterator>);
+
+// <filesystem>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::filesystem::directory_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::filesystem::recursive_directory_iterator>);
+#endif
+
+// <forward_list>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::forward_list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::forward_list<int>::const_iterator>);
+
+// <iterator>
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::back_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::front_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::move_iterator<int*>>);
+
+// <list>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::list<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::list<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::list<int>::const_reverse_iterator>);
+
+// <map>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::map<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::map<int, int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multimap<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multimap<int, int>::const_reverse_iterator>);
+
+// <set>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::set<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::set<int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multiset<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::multiset<int>::const_reverse_iterator>);
+
+// <string>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string::const_reverse_iterator>);
+
+// <string_view>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string_view::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string_view::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string_view::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::string_view::const_reverse_iterator>);
+
+// <unordered_map>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_map<int, int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_map<int, int>::const_local_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multimap<int, int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multimap<int, int>::const_local_iterator>);
+
+// <unordered_set>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_set<int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_set<int>::const_local_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multiset<int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::unordered_multiset<int>::const_local_iterator>);
+
+// <vector>
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::const_reverse_iterator>);
+
+// Not iterators
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<void>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<void*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int* const>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::iterator volatile>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::iterator&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::vector<int>::iterator&&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int[]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int[10]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int (*)()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int (&)()>);
+
+struct S {};
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<S>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int S::*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<int (S::*)()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_input_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_input_iterator.compile.pass.cpp
new file mode 100644
index 0000000..49f42dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_input_iterator.compile.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test uses iterator types from std::filesystem, which were introduced in macOS 10.15.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// template<class I>
+// concept __iterator_traits_detail::__cpp17_input_iterator;
+
+#include <iterator>
+
+#include <array>
+#include <deque>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+#include <filesystem>
+#endif
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "iterator_traits_cpp17_iterators.h"
+
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_proxy_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_input_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_proxy_input_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_forward_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_bidirectional_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<iterator_traits_cpp17_random_access_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<int*>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<int const*>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<int volatile*>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<int const volatile*>);
+
+// <array>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::array<int, 10>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::array<int, 10>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::array<int, 10>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::array<int, 10>::const_reverse_iterator>);
+
+// <deque>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::deque<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::deque<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::deque<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::deque<int>::const_reverse_iterator>);
+
+// <filesystem>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::filesystem::directory_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::filesystem::recursive_directory_iterator>);
+#endif
+
+// <forward_list>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::forward_list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::forward_list<int>::const_iterator>);
+
+// <iterator>
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::back_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::front_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::insert_iterator<std::vector<int>>>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::move_iterator<int*>>);
+
+// <list>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::list<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::list<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::list<int>::const_reverse_iterator>);
+
+// <map>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::map<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::map<int, int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multimap<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multimap<int, int>::const_reverse_iterator>);
+
+// <set>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::set<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::set<int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multiset<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::multiset<int>::const_reverse_iterator>);
+
+// <string>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string::const_reverse_iterator>);
+
+// <string_view>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string_view::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string_view::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string_view::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::string_view::const_reverse_iterator>);
+
+// <unordered_map>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_map<int, int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_map<int, int>::const_local_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multimap<int, int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multimap<int, int>::const_local_iterator>);
+
+// <unordered_set>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_set<int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_set<int>::const_local_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multiset<int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::unordered_multiset<int>::const_local_iterator>);
+
+// <vector>
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::const_reverse_iterator>);
+
+// Not iterators
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<void>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<void*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int* const>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::iterator volatile>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::iterator&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::vector<int>::iterator&&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int[]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int[10]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int (*)()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int (&)()>);
+
+struct S {};
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<S>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int S::*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<int (S::*)()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_iterator.compile.pass.cpp
new file mode 100644
index 0000000..3ce86df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_iterator.compile.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test uses iterator types from std::filesystem, which were introduced in macOS 10.15.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// template<class I>
+// concept __iterator_traits_detail::__cpp17_iterator;
+
+#include <iterator>
+
+#include <array>
+#include <deque>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+#include <filesystem>
+#endif
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "iterator_traits_cpp17_iterators.h"
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_proxy_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_input_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_proxy_input_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_forward_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_bidirectional_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<iterator_traits_cpp17_random_access_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<int*>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<int const*>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<int volatile*>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<int const volatile*>);
+
+// <array>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::array<int, 10>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::array<int, 10>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::array<int, 10>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::array<int, 10>::const_reverse_iterator>);
+
+// <deque>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::deque<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::deque<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::deque<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::deque<int>::const_reverse_iterator>);
+
+// <filesystem>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::filesystem::directory_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::filesystem::recursive_directory_iterator>);
+#endif
+
+// <forward_list>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::forward_list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::forward_list<int>::const_iterator>);
+
+// <iterator>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::back_insert_iterator<std::vector<int>>>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::front_insert_iterator<std::vector<int>>>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::insert_iterator<std::vector<int>>>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::move_iterator<int*>>);
+
+// <list>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::list<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::list<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::list<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::list<int>::const_reverse_iterator>);
+
+// <map>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::map<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::map<int, int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multimap<int, int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multimap<int, int>::const_reverse_iterator>);
+
+// <set>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::set<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::set<int>::const_reverse_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multiset<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::multiset<int>::const_reverse_iterator>);
+
+// <string>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string::const_reverse_iterator>);
+
+// <string_view>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string_view::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string_view::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string_view::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::string_view::const_reverse_iterator>);
+
+// <unordered_map>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_map<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_map<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_map<int, int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_map<int, int>::const_local_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multimap<int, int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multimap<int, int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multimap<int, int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multimap<int, int>::const_local_iterator>);
+
+// <unordered_set>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_set<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_set<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_set<int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_set<int>::const_local_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multiset<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multiset<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multiset<int>::local_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::unordered_multiset<int>::const_local_iterator>);
+
+// <vector>
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::const_reverse_iterator>);
+
+// Not iterators
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<void>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<void*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int* const>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::iterator volatile>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::iterator&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<std::vector<int>::iterator&&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int[]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int[10]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int (*)()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int (&)()>);
+
+struct S {};
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<S>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int S::*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_iterator<int (S::*)()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_random_access_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_random_access_iterator.compile.pass.cpp
new file mode 100644
index 0000000..ddbf60f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/legacy_random_access_iterator.compile.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test uses iterator types from std::filesystem, which were introduced in macOS 10.15.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// template<class I>
+// concept __iterator_traits_detail::__cpp17_random_access_iterator;
+
+#include <iterator>
+
+#include <array>
+#include <deque>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+#include <filesystem>
+#endif
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "iterator_traits_cpp17_iterators.h"
+
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_proxy_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_input_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_proxy_input_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_forward_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_bidirectional_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<iterator_traits_cpp17_random_access_iterator>);
+
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<int*>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<int const*>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<int volatile*>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<int const volatile*>);
+
+// <array>
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::array<int, 10>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::array<int, 10>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::array<int, 10>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::array<int, 10>::const_reverse_iterator>);
+
+// <deque>
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::deque<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::deque<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::deque<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::deque<int>::const_reverse_iterator>);
+
+// <filesystem>
+#ifndef _LIBCPP_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::filesystem::directory_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::filesystem::recursive_directory_iterator>);
+#endif
+
+// <forward_list>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::forward_list<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::forward_list<int>::const_iterator>);
+
+// <iterator>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::back_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::front_insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::insert_iterator<std::vector<int>>>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::move_iterator<int*>>);
+
+// <list>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::list<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::list<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::list<int>::reverse_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::list<int>::const_reverse_iterator>);
+
+// <map>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::map<int, int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::map<int, int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::map<int, int>::reverse_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::map<int, int>::const_reverse_iterator>);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multimap<int, int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multimap<int, int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multimap<int, int>::reverse_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multimap<int, int>::const_reverse_iterator>);
+
+// <set>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::set<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::set<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::set<int>::reverse_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::set<int>::const_reverse_iterator>);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multiset<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multiset<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multiset<int>::reverse_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::multiset<int>::const_reverse_iterator>);
+
+// <string>
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string::const_reverse_iterator>);
+
+// <string_view>
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string_view::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string_view::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string_view::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::string_view::const_reverse_iterator>);
+
+// <unordered_map>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_map<int, int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_map<int, int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_map<int, int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_map<int, int>::const_local_iterator>);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multimap<int, int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multimap<int, int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multimap<int, int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multimap<int, int>::const_local_iterator>);
+
+// <unordered_set>
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_set<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_set<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_set<int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_set<int>::const_local_iterator>);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multiset<int>::iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multiset<int>::const_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multiset<int>::local_iterator>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::unordered_multiset<int>::const_local_iterator>);
+
+// <vector>
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::const_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::reverse_iterator>);
+static_assert(std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::const_reverse_iterator>);
+
+// Not iterators
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<void>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<void*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int* const>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::iterator volatile>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::iterator&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<std::vector<int>::iterator&&>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int[]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int[10]>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int (*)()>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int (&)()>);
+
+struct S {};
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<S>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int S::*>);
+static_assert(!std::__iterator_traits_detail::__cpp17_random_access_iterator<int (S::*)()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/locale_dependent.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/locale_dependent.compile.pass.cpp
new file mode 100644
index 0000000..683a2dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.assoc.types/iterator.traits/locale_dependent.compile.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+
+#include <iterator>
+
+#include <istream>
+#include <ostream>
+
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::istream_iterator<int, std::istream> >);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::istreambuf_iterator<int, std::istream> >);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::ostream_iterator<int, std::ostream> >);
+static_assert(std::__iterator_traits_detail::__cpp17_iterator<std::ostreambuf_iterator<int, std::ostream> >);
+
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::istream_iterator<int, std::istream> >);
+static_assert(std::__iterator_traits_detail::__cpp17_input_iterator<std::istreambuf_iterator<int, std::istream> >);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::ostream_iterator<int, std::ostream> >);
+static_assert(!std::__iterator_traits_detail::__cpp17_input_iterator<std::ostreambuf_iterator<int, std::ostream> >);
+
+// This is because the legacy iterator concepts don't care about iterator_category
+static_assert(std::__iterator_traits_detail::__cpp17_forward_iterator<std::istream_iterator<int, std::istream> >);
+
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::istreambuf_iterator<int, std::istream> >);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::ostream_iterator<int, std::ostream> >);
+static_assert(!std::__iterator_traits_detail::__cpp17_forward_iterator<std::ostreambuf_iterator<int, std::ostream> >);
+
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::istream_iterator<int, std::istream> >);
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::istreambuf_iterator<int, std::istream> >);
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::ostream_iterator<int, std::ostream> >);
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_bidirectional_iterator<std::ostreambuf_iterator<int, std::ostream> >);
+
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_random_access_iterator<std::istream_iterator<int, std::istream> >);
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_random_access_iterator<std::istreambuf_iterator<int, std::istream> >);
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_random_access_iterator<std::ostream_iterator<int, std::ostream> >);
+static_assert(
+    !std::__iterator_traits_detail::__cpp17_random_access_iterator<std::ostreambuf_iterator<int, std::ostream> >);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/cpp20_iter_concepts.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/cpp20_iter_concepts.pass.cpp
new file mode 100644
index 0000000..5eddf79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/cpp20_iter_concepts.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// ITER_TRAITS(I)
+
+// -- If the qualified-id ITER_TRAITS(I)::iterator_concept is valid and names a
+//   type, then ITER_CONCEPT(I) denotes that type.
+// (1.2) -- Otherwise, if the qualified-id ITER_TRAITS(I)::iterator_category is
+// valid and names a type, then ITER_CONCEPT(I) denotes that type.
+// (1.3) -- Otherwise, if iterator_traits<I> names a specialization generated
+// from the primary template, then ITER_CONCEPT(I) denotes
+// random_access_iterator_tag.
+// (1.4) -- Otherwise, ITER_CONCEPT(I) does not denote a type.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-private-header
+
+#include "test_macros.h"
+
+#include <__type_traits/is_valid_expansion.h>
+#include <iterator>
+
+struct OtherTag : std::input_iterator_tag {};
+struct OtherTagTwo : std::output_iterator_tag {};
+
+struct MyIter {
+  using iterator_category = std::random_access_iterator_tag;
+  using iterator_concept = int;
+  using value_type = char;
+  using difference_type = std::ptrdiff_t;
+  using pointer = char*;
+  using reference = char&;
+};
+
+struct MyIter2 {
+  using iterator_category = OtherTag;
+  using value_type = char;
+  using difference_type = std::ptrdiff_t;
+  using pointer = char*;
+  using reference = char&;
+};
+
+struct MyIter3 {};
+
+struct Empty {};
+struct EmptyWithSpecial {};
+template <>
+struct std::iterator_traits<MyIter3> {
+  using iterator_category = OtherTagTwo;
+  using value_type = char;
+  using difference_type = std::ptrdiff_t;
+  using pointer = char*;
+  using reference = char&;
+};
+
+template <>
+struct std::iterator_traits<EmptyWithSpecial> {
+  // empty non-default.
+};
+
+int main(int, char**) {
+  // If the qualified-id ITER_TRAITS(I)::iterator_concept is valid and names a type,
+  // then ITER_CONCEPT(I) denotes that type.
+  {
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(std::_ITER_CONCEPT<char*>, std::contiguous_iterator_tag);
+#endif
+    ASSERT_SAME_TYPE(std::_ITER_CONCEPT<MyIter>, int);
+  }
+  // Otherwise, if the qualified-id ITER_TRAITS(I)::iterator_category is valid
+  // and names a type, then ITER_CONCEPT(I) denotes that type.
+  {
+    ASSERT_SAME_TYPE(std::_ITER_CONCEPT<MyIter2>, OtherTag);
+    ASSERT_SAME_TYPE(std::_ITER_CONCEPT<MyIter3>, OtherTagTwo);
+  }
+  // FIXME - This requirement makes no sense to me. Why does an empty type with
+  // an empty default iterator_traits get a category of random?
+  {
+    ASSERT_SAME_TYPE(std::_ITER_CONCEPT<Empty>, std::random_access_iterator_tag);
+  }
+  {
+    static_assert(!std::_IsValidExpansion<std::_ITER_CONCEPT, EmptyWithSpecial>::value, "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/cpp20_iter_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/cpp20_iter_traits.compile.pass.cpp
new file mode 100644
index 0000000..50047c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/cpp20_iter_traits.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// ITER_TRAITS(I)
+
+// For a type I, let ITER_TRAITS(I) denote the type I if iterator_traits<I> names
+// a specialization generated from the primary template. Otherwise,
+// ITER_TRAITS(I) denotes iterator_traits<I>.
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_iterators.h"
+
+struct A : random_access_iterator<int*> {};
+struct B : random_access_iterator<int*> {};
+struct C : random_access_iterator<int*> {};
+struct D : random_access_iterator<int*> {};
+template<> struct std::iterator_traits<B> {};
+template<> struct std::iterator_traits<C> : std::iterator_traits<A> {};
+template<> struct std::iterator_traits<D> : std::iterator_traits<int*> {};
+
+static_assert(std::is_same<std::_ITER_TRAITS<int*>, std::iterator_traits<int*>>::value, "");
+static_assert(std::is_same<std::_ITER_TRAITS<A>, A>::value, "");
+static_assert(std::is_same<std::_ITER_TRAITS<B>, std::iterator_traits<B>>::value, "");
+static_assert(std::is_same<std::_ITER_TRAITS<C>, std::iterator_traits<C>>::value, "");
+static_assert(std::is_same<std::_ITER_TRAITS<D>, std::iterator_traits<D>>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/integer_like.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/integer_like.compile.pass.cpp
new file mode 100644
index 0000000..91b3acf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/integer_like.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <iterator>
+
+#include <concepts>
+
+static_assert(!std::__integer_like<bool>);
+static_assert(std::__integer_like<signed char>);
+static_assert(std::__integer_like<unsigned char>);
+static_assert(std::__integer_like<short>);
+static_assert(std::__integer_like<unsigned short>);
+static_assert(std::__integer_like<int>);
+static_assert(std::__integer_like<unsigned int>);
+static_assert(std::__integer_like<long>);
+static_assert(std::__integer_like<unsigned long>);
+static_assert(std::__integer_like<long long>);
+static_assert(std::__integer_like<unsigned long long>);
+static_assert(std::__integer_like<char>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::__integer_like<wchar_t>);
+#endif
+static_assert(std::__integer_like<char8_t>);
+static_assert(std::__integer_like<char16_t>);
+static_assert(std::__integer_like<char32_t>);
+
+static_assert(!std::__signed_integer_like<bool>);
+static_assert(std::__signed_integer_like<signed char>);
+static_assert(std::__signed_integer_like<short>);
+static_assert(std::__signed_integer_like<int>);
+static_assert(std::__signed_integer_like<long>);
+static_assert(std::__signed_integer_like<long long>);
+static_assert(!std::__signed_integer_like<unsigned char>);
+static_assert(!std::__signed_integer_like<unsigned short>);
+static_assert(!std::__signed_integer_like<unsigned int>);
+static_assert(!std::__signed_integer_like<unsigned long>);
+static_assert(!std::__signed_integer_like<unsigned long long>);
+static_assert(std::__signed_integer_like<char> == std::signed_integral<char>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::__signed_integer_like<wchar_t> == std::signed_integral<wchar_t>);
+#endif
+static_assert(std::__signed_integer_like<char8_t> == std::signed_integral<char8_t>);
+static_assert(std::__signed_integer_like<char16_t> == std::signed_integral<char16_t>);
+static_assert(std::__signed_integer_like<char32_t> == std::signed_integral<char32_t>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/contiguous_iterator.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/contiguous_iterator.verify.cpp
new file mode 100644
index 0000000..37c5ad9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/contiguous_iterator.verify.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test checks that std::contiguous_iterator uses std::to_address, which is not SFINAE-friendly
+// when the type is missing the `T::element_type` typedef.
+
+#include <iterator>
+
+#include <compare>
+#include <cstddef>
+
+struct no_element_type {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef no_element_type                 self;
+
+    no_element_type();
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+void test() {
+    (void) std::contiguous_iterator<no_element_type>;
+        // expected-error@*:* {{implicit instantiation of undefined template}}
+        // expected-note@*:* {{to_address}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator_with_data.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator_with_data.pass.cpp
new file mode 100644
index 0000000..a4c2b08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/iterator_with_data.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include "test_macros.h"
+
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wprivate-header")
+#include <__iterator/iterator_with_data.h>
+TEST_DIAGNOSTIC_POP
+
+#include "test_iterators.h"
+
+static_assert(std::forward_iterator<std::__iterator_with_data<forward_iterator<int*>, int>>);
+static_assert(std::bidirectional_iterator<std::__iterator_with_data<bidirectional_iterator<int*>, int>>);
+static_assert(std::bidirectional_iterator<std::__iterator_with_data<random_access_iterator<int*>, int>>);
+static_assert(std::bidirectional_iterator<std::__iterator_with_data<contiguous_iterator<int*>, int>>);
+
+constexpr bool test() {
+  {
+    std::__iterator_with_data<forward_iterator<int*>, int> iter(forward_iterator<int*>(nullptr), 3);
+    assert(iter == iter);
+    assert(iter.__get_iter() == forward_iterator<int*>(nullptr));
+    assert(std::move(iter).__get_data() == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/equal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/equal.pass.cpp
new file mode 100644
index 0000000..583e733
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <BidirectionalIterator Iter1, BidirectionalIterator Iter2>
+//   requires HasEqualTo<Iter1, Iter2>
+// bool operator==(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::__unconstrained_reverse_iterator<It> r1(l);
+    const std::__unconstrained_reverse_iterator<It> r2(r);
+    assert((r1 == r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s), true);
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+1), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), false);
+    test(s, s, true);
+    test(s, s+1, false);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/greater-equal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/greater-equal.pass.cpp
new file mode 100644
index 0000000..9e90841
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/greater-equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator>=(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::__unconstrained_reverse_iterator<It> r1(l);
+    const std::__unconstrained_reverse_iterator<It> r2(r);
+    assert((r1 >= r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), true);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), false);
+    test(s, s, true);
+    test(s, s+1, true);
+    test(s+1, s, false);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/greater.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/greater.pass.cpp
new file mode 100644
index 0000000..f1afd23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/greater.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator>(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::__unconstrained_reverse_iterator<It> r1(l);
+    const std::__unconstrained_reverse_iterator<It> r2(r);
+    assert((r1 > r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), true);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), false);
+    test(s, s, false);
+    test(s, s+1, true);
+    test(s+1, s, false);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/less-equal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/less-equal.pass.cpp
new file mode 100644
index 0000000..c710212
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/less-equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator<=(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::__unconstrained_reverse_iterator<It> r1(l);
+    const std::__unconstrained_reverse_iterator<It> r2(r);
+    assert((r1 <= r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), false);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), true);
+    test(s, s, true);
+    test(s, s+1, false);
+    test(s+1, s, true);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/less.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/less.pass.cpp
new file mode 100644
index 0000000..ffd3a03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/less.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator<(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::__unconstrained_reverse_iterator<It> r1(l);
+    const std::__unconstrained_reverse_iterator<It> r2(r);
+    assert((r1 < r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), false);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), true);
+    test(s, s, false);
+    test(s, s+1, false);
+    test(s+1, s, true);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/not-equal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/not-equal.pass.cpp
new file mode 100644
index 0000000..614f159
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cmp/not-equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <BidirectionalIterator Iter1, BidirectionalIterator Iter2>
+//   requires HasEqualTo<Iter1, Iter2>
+// bool operator!=(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::__unconstrained_reverse_iterator<It> r1(l);
+    const std::__unconstrained_reverse_iterator<It> r2(r);
+    assert((r1 != r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s), false);
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+1), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), true);
+    test(s, s, false);
+    test(s, s+1, true);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/assign.LWG3435.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/assign.LWG3435.verify.cpp
new file mode 100644
index 0000000..835e2b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/assign.LWG3435.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <class U>
+//  requires !same_as<U, Iter> && convertible_to<const U&, Iter> && assignable_from<Iter&, const U&>
+// __unconstrained_reverse_iterator& operator=(const __unconstrained_reverse_iterator<U>& u);
+
+#include <iterator>
+
+struct Base { };
+struct Derived : Base { };
+
+void test() {
+    std::__unconstrained_reverse_iterator<Base*> base;
+    std::__unconstrained_reverse_iterator<Derived*> derived;
+    derived = base; // expected-error {{no viable overloaded '='}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.default.pass.cpp
new file mode 100644
index 0000000..66972d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// __unconstrained_reverse_iterator(); // constexpr since C++17
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test() {
+    std::__unconstrained_reverse_iterator<It> r;
+    (void)r;
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    test<bidirectional_iterator<const char*> >();
+    test<random_access_iterator<char*> >();
+    test<char*>();
+    test<const char*>();
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.iter.explicit.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.iter.explicit.verify.cpp
new file mode 100644
index 0000000..95626be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.iter.explicit.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// explicit __unconstrained_reverse_iterator(Iter x);
+
+// test explicitness
+
+#include <iterator>
+
+int main(int, char**) {
+    char const* it = "";
+    std::__unconstrained_reverse_iterator<char const*> r = it; // expected-error{{no viable conversion from 'const char *' to 'std::__unconstrained_reverse_iterator<const char *>'}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.iter.pass.cpp
new file mode 100644
index 0000000..e4d0874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.iter.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// explicit __unconstrained_reverse_iterator(Iter x); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    assert(r.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char s[] = "123";
+    test(bidirectional_iterator<const char*>(s));
+    test(random_access_iterator<const char*>(s));
+    test(s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.reverse_iterator.LWG3435.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.reverse_iterator.LWG3435.verify.cpp
new file mode 100644
index 0000000..7ea4a61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.cons/ctor.reverse_iterator.LWG3435.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <class U>
+//  requires !same_as<U, Iter> && convertible_to<const U&, Iter>
+// __unconstrained_reverse_iterator(const __unconstrained_reverse_iterator<U> &);
+
+#include <iterator>
+
+struct Base { };
+struct Derived : Base { };
+
+void test() {
+    std::__unconstrained_reverse_iterator<Base*> base;
+    std::__unconstrained_reverse_iterator<Derived*> derived(base); // expected-error {{no matching constructor for initialization of 'std::__unconstrained_reverse_iterator<Derived *>'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.conv/base.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.conv/base.pass.cpp
new file mode 100644
index 0000000..7fd85c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.conv/base.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// iterator_type base() const; // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+TEST_CONSTEXPR_CXX17 bool test() {
+    typedef bidirectional_iterator<int*> Iter;
+    int i = 0;
+    Iter iter(&i);
+    std::__unconstrained_reverse_iterator<Iter> const reverse(iter);
+    std::__unconstrained_reverse_iterator<Iter>::iterator_type base = reverse.base();
+    assert(base == Iter(&i));
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 14
+    static_assert(test(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/arrow.pass.cpp
new file mode 100644
index 0000000..8b61df6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/arrow.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// pointer operator->() const; // constexpr in C++17
+
+// Be sure to respect LWG 198:
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#198
+// LWG 198 was superseded by LWG 2360
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2360
+
+
+#include <iterator>
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    A() : data_(1) {}
+    ~A() {data_ = -1;}
+
+    int get() const {return data_;}
+
+    friend bool operator==(const A& x, const A& y)
+        {return x.data_ == y.data_;}
+};
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::value_type x)
+{
+    std::__unconstrained_reverse_iterator<It> r(i);
+    assert(r->get() == x.get());
+}
+
+class B
+{
+    int data_;
+public:
+    B(int d=1) : data_(d) {}
+    ~B() {data_ = -1;}
+
+    int get() const {return data_;}
+
+    friend bool operator==(const B& x, const B& y)
+        {return x.data_ == y.data_;}
+    const B *operator&() const { return nullptr; }
+    B       *operator&()       { return nullptr; }
+};
+
+class C
+{
+    int data_;
+public:
+    TEST_CONSTEXPR C() : data_(1) {}
+
+    TEST_CONSTEXPR int get() const {return data_;}
+
+    friend TEST_CONSTEXPR bool operator==(const C& x, const C& y)
+        {return x.data_ == y.data_;}
+};
+
+TEST_CONSTEXPR  C gC;
+
+int main(int, char**)
+{
+  A a;
+  test(&a+1, A());
+
+  {
+    std::list<B> l;
+    l.push_back(B(0));
+    l.push_back(B(1));
+    l.push_back(B(2));
+
+    {
+      std::list<B>::const_iterator i = l.begin();
+      assert ( i->get() == 0 );  ++i;
+      assert ( i->get() == 1 );  ++i;
+      assert ( i->get() == 2 );  ++i;
+      assert ( i == l.end ());
+    }
+
+    {
+      std::list<B>::const_reverse_iterator ri = l.rbegin();
+      assert ( ri->get() == 2 );  ++ri;
+      assert ( ri->get() == 1 );  ++ri;
+      assert ( ri->get() == 0 );  ++ri;
+      assert ( ri == l.rend ());
+    }
+  }
+
+#if TEST_STD_VER > 14
+  {
+    typedef std::__unconstrained_reverse_iterator<const C *> RI;
+    constexpr RI it1 = RI(&gC+1);
+
+    static_assert(it1->get() == gC.get(), "");
+  }
+#endif
+  {
+    ((void)gC);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/bracket.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/bracket.pass.cpp
new file mode 100644
index 0000000..f9beada
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/bracket.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// unspecified operator[](difference_type n) const; // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i,
+                               typename std::iterator_traits<It>::difference_type n,
+                               typename std::iterator_traits<It>::value_type x) {
+    typedef typename std::iterator_traits<It>::value_type value_type;
+    const std::__unconstrained_reverse_iterator<It> r(i);
+    value_type rr = r[n];
+    assert(rr == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 4, '1');
+    test(random_access_iterator<const char*>(s+5), 0, '5');
+    test(s+5, 4, '1');
+    test(s+5, 0, '5');
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/dereference.pass.cpp
new file mode 100644
index 0000000..5698d8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.elem/dereference.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// reference operator*() const; // constexpr in C++17
+
+// Be sure to respect LWG 198:
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#198
+// LWG 198 was superseded by LWG 2360
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2360
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    A() : data_(1) {}
+    ~A() {data_ = -1;}
+
+    friend bool operator==(const A& x, const A& y)
+        {return x.data_ == y.data_;}
+};
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::value_type x)
+{
+    std::__unconstrained_reverse_iterator<It> r(i);
+    assert(*r == x);
+}
+
+int main(int, char**)
+{
+    A a;
+    test(&a+1, A());
+
+#if TEST_STD_VER > 14
+    {
+        constexpr const char *p = "123456789";
+        typedef std::__unconstrained_reverse_iterator<const char *> RI;
+        constexpr RI it1 = RI(p+1);
+        constexpr RI it2 = RI(p+2);
+        static_assert(*it1 == p[0], "");
+        static_assert(*it2 == p[1], "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/decrement-assign.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/decrement-assign.pass.cpp
new file mode 100644
index 0000000..48be8a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/decrement-assign.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// __unconstrained_reverse_iterator& operator-=(difference_type n); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It>& rr = r -= n;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+    test(s+5, 5, s+10);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/increment-assign.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/increment-assign.pass.cpp
new file mode 100644
index 0000000..115d95e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/increment-assign.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// __unconstrained_reverse_iterator& operator+=(difference_type n); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It>& rr = r += n;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    char const* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/minus.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/minus.pass.cpp
new file mode 100644
index 0000000..c3a4d1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/minus.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// __unconstrained_reverse_iterator operator-(difference_type n) const; // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    const std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It> rr = r - n;
+    assert(rr.base() == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+    test(s+5, 5, s+10);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/plus.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/plus.pass.cpp
new file mode 100644
index 0000000..164c5ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/plus.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// __unconstrained_reverse_iterator operator+(difference_type n) const; // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    const std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It> rr = r + n;
+    assert(rr.base() == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/postdecrement.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/postdecrement.pass.cpp
new file mode 100644
index 0000000..3220c1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/postdecrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// __unconstrained_reverse_iterator operator--(int); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It> rr = r--;
+    assert(r.base() == x);
+    assert(rr.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s+2));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s+2));
+    test(s+1, s+2);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/postincrement.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/postincrement.pass.cpp
new file mode 100644
index 0000000..47477fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/postincrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// __unconstrained_reverse_iterator operator++(int); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It> rr = r++;
+    assert(r.base() == x);
+    assert(rr.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s));
+    test(s+1, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/predecrement.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/predecrement.pass.cpp
new file mode 100644
index 0000000..6ad41ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/predecrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// __unconstrained_reverse_iterator& operator--(); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It>& rr = --r;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s+2));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s+2));
+    test(s+1, s+2);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/preincrement.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/preincrement.pass.cpp
new file mode 100644
index 0000000..9c7e5b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nav/preincrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// __unconstrained_reverse_iterator& operator++(); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::__unconstrained_reverse_iterator<It> r(i);
+    std::__unconstrained_reverse_iterator<It>& rr = ++r;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s));
+    test(s+1, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nonmember/minus.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nonmember/minus.pass.cpp
new file mode 100644
index 0000000..632e265
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/reverse.iter.nonmember/minus.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasMinus<Iter2, Iter1>
+// auto operator-(const __unconstrained_reverse_iterator<Iter1>& x, const __unconstrained_reverse_iterator<Iter2>& y) // constexpr in C++17
+//  -> decltype(y.base() - x.base());
+
+#include <iterator>
+#include <cstddef>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class, class, class = void> struct HasMinus : std::false_type {};
+template <class R1, class R2> struct HasMinus<R1, R2, decltype((R1() - R2(), void()))> : std::true_type {};
+
+template <class It1, class It2>
+TEST_CONSTEXPR_CXX17 void test(It1 l, It2 r, std::ptrdiff_t x) {
+    const std::__unconstrained_reverse_iterator<It1> r1(l);
+    const std::__unconstrained_reverse_iterator<It2> r2(r);
+    assert((r1 - r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    char s[3] = {0};
+
+    // Test same base iterator type
+    test(s, s, 0);
+    test(s, s+1, 1);
+    test(s+1, s, -1);
+
+    // Test non-subtractable base iterator types
+    static_assert( HasMinus<std::__unconstrained_reverse_iterator<int*>, std::__unconstrained_reverse_iterator<int*> >::value, "");
+#if TEST_STD_VER >= 11
+    static_assert(!HasMinus<std::__unconstrained_reverse_iterator<int*>, std::__unconstrained_reverse_iterator<char*> >::value, "");
+#endif
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/types.compile.pass.cpp
new file mode 100644
index 0000000..f8ffef3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/__unconstrained_reverse_iterator/types.compile.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// __unconstrained_reverse_iterator
+
+// Test nested types and data member:
+
+// template <BidirectionalIterator Iter>
+// class __unconstrained_reverse_iterator {
+// protected:
+//   Iter current;
+// public:
+//   iterator<typename iterator_traits<Iterator>::iterator_category,
+//   typename iterator_traits<Iterator>::value_type,
+//   typename iterator_traits<Iterator>::difference_type,
+//   typename iterator_traits<Iterator>::pointer,
+//   typename iterator_traits<Iterator>::reference> {
+// };
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void test() {
+  typedef std::__unconstrained_reverse_iterator<It> R;
+  typedef std::iterator_traits<It> T;
+  static_assert((std::is_same<typename R::iterator_type, It>::value), "");
+  static_assert((std::is_same<typename R::value_type, typename T::value_type>::value), "");
+  static_assert((std::is_same<typename R::difference_type, typename T::difference_type>::value), "");
+  static_assert((std::is_same<typename R::reference, typename T::reference>::value), "");
+  static_assert((std::is_same<typename R::pointer, typename std::iterator_traits<It>::pointer>::value), "");
+
+#if TEST_STD_VER <= 14
+  typedef std::iterator<typename T::iterator_category, typename T::value_type> iterator_base;
+  static_assert((std::is_base_of<iterator_base, R>::value), "");
+#endif
+#if TEST_STD_VER > 17
+  if constexpr (std::is_same_v<typename T::iterator_category, std::contiguous_iterator_tag>) {
+    static_assert((std::is_same<typename R::iterator_category, std::random_access_iterator_tag>::value), "");
+  } else {
+    static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
+  }
+#else
+  static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
+#endif
+}
+
+#if TEST_STD_VER > 17
+
+struct FooIter {
+  using iterator_category = std::bidirectional_iterator_tag;
+  using value_type = void*;
+  using difference_type = void*;
+  using pointer = void*;
+  using reference = int&;
+  int& operator*() const;
+};
+template <>
+struct std::indirectly_readable_traits<FooIter> {
+  using value_type = int;
+};
+template <>
+struct std::incrementable_traits<FooIter> {
+  using difference_type = char;
+};
+
+// Not using `FooIter::value_type`.
+static_assert(std::is_same_v<typename std::__unconstrained_reverse_iterator<FooIter>::value_type, int>);
+// Not using `FooIter::difference_type`.
+static_assert(std::is_same_v<typename std::__unconstrained_reverse_iterator<FooIter>::difference_type, char>);
+
+#endif
+
+struct BarIter {
+  bool& operator*() const;
+};
+template <>
+struct std::iterator_traits<BarIter> {
+  using difference_type = char;
+  using value_type = char;
+  using pointer = char*;
+  using reference = char&;
+  using iterator_category = std::bidirectional_iterator_tag;
+};
+
+#if TEST_STD_VER > 17
+  static_assert(std::is_same_v<typename std::__unconstrained_reverse_iterator<BarIter>::reference, bool&>);
+#else
+  static_assert(std::is_same<typename std::__unconstrained_reverse_iterator<BarIter>::reference, char&>::value, "");
+#endif
+
+void test_all() {
+  test<bidirectional_iterator<char*> >();
+  test<random_access_iterator<char*> >();
+  test<char*>();
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/get_container.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/get_container.pass.cpp
new file mode 100644
index 0000000..9f45848
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/get_container.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// _Container* __get_container(); // constexpr in C++20
+
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool test(C c) {
+  const std::back_insert_iterator<C> i(c);
+  assert(i.__get_container() == std::addressof(c));
+  return true;
+}
+
+int main(int, char**) {
+  test(std::vector<int>());
+  test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+  test(ConstexprFixedCapacityDeque<int, 10>());
+  static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/reverse.iterators/bad_template_argument.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/reverse.iterators/bad_template_argument.verify.cpp
new file mode 100644
index 0000000..4ccf85e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/predef.iterators/reverse.iterators/bad_template_argument.verify.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// reverse_iterator
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+int main(int, char**) {
+  using BadIter = std::reverse_iterator<forward_iterator<int*>>;
+  BadIter i; //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}reverse_iterator<It> requires It to be a bidirectional iterator.}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/failed.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/failed.pass.cpp
new file mode 100644
index 0000000..c856c93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/failed.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// bool failed() const throw();
+//
+// Extension: constructing from NULL is UB; we just make it a failed iterator
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostreambuf_iterator<char> i(nullptr);
+        assert(i.failed());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::ostreambuf_iterator<wchar_t> i(nullptr);
+        assert(i.failed());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/unwrap_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/unwrap_iter.pass.cpp
new file mode 100644
index 0000000..ff1a8d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/unwrap_iter.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// When the debug mode is enabled, we don't unwrap iterators in std::copy
+// so we don't get this optimization.
+// UNSUPPORTED: libcpp-has-debug-mode
+
+// check that std::__unwrap_iter() returns the correct type
+
+#include <algorithm>
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class Iter>
+using UnwrapT = decltype(std::__unwrap_iter(std::declval<Iter>()));
+
+template <class Iter>
+using rev_iter = std::reverse_iterator<Iter>;
+
+template <class Iter>
+using rev_rev_iter = rev_iter<rev_iter<Iter> >;
+
+static_assert(std::is_same<UnwrapT<int*>, int*>::value, "");
+static_assert(std::is_same<UnwrapT<std::__wrap_iter<int*> >, int*>::value, "");
+static_assert(std::is_same<UnwrapT<rev_iter<int*> >, std::reverse_iterator<int*> >::value, "");
+static_assert(std::is_same<UnwrapT<rev_rev_iter<int*> >, int*>::value, "");
+static_assert(std::is_same<UnwrapT<rev_rev_iter<std::__wrap_iter<int*> > >, int*>::value, "");
+static_assert(std::is_same<UnwrapT<rev_rev_iter<rev_iter<std::__wrap_iter<int*> > > >, rev_iter<std::__wrap_iter<int*> > >::value, "");
+
+static_assert(std::is_same<UnwrapT<random_access_iterator<int*> >, random_access_iterator<int*> >::value, "");
+static_assert(std::is_same<UnwrapT<rev_iter<random_access_iterator<int*> > >, rev_iter<random_access_iterator<int*> > >::value, "");
+static_assert(std::is_same<UnwrapT<rev_rev_iter<random_access_iterator<int*> > >, random_access_iterator<int*> >::value, "");
+static_assert(std::is_same<UnwrapT<rev_rev_iter<rev_iter<random_access_iterator<int*> > > >, rev_iter<random_access_iterator<int*> > >::value, "");
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::string str = "Banane";
+  using Iter = std::string::iterator;
+
+  assert(std::__unwrap_iter(str.begin()) == str.data());
+  assert(std::__unwrap_iter(str.end()) == str.data() + str.size());
+  assert(std::__unwrap_iter(rev_rev_iter<Iter>(rev_iter<Iter>(str.begin()))) == str.data());
+  assert(std::__unwrap_iter(rev_rev_iter<Iter>(rev_iter<Iter>(str.end()))) == str.data() + str.size());
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/iterators/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/iterators/version.pass.cpp
new file mode 100644
index 0000000..31c99ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/iterators/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/cmp/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/cmp/version.pass.cpp
new file mode 100644
index 0000000..859c567
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/cmp/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <compare>
+
+#include <compare>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/cstdint/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/cstdint/version.pass.cpp
new file mode 100644
index 0000000..da1d4a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/cstdint/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstdint>
+
+#include <cstdint>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/cxa_deleted_virtual.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/cxa_deleted_virtual.pass.cpp
new file mode 100644
index 0000000..2f63ee3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/cxa_deleted_virtual.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Test exporting the symbol: "__cxa_deleted_virtual" in macosx
+// But don't expect the symbol to be exported in previous versions.
+//
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13}}
+
+struct S { virtual void f() = delete; virtual ~S() {} };
+int main(int, char**) {
+  S *s = new S;
+  delete s;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/aligned_alloc_availability.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/aligned_alloc_availability.verify.cpp
new file mode 100644
index 0000000..6296bbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/aligned_alloc_availability.verify.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure we get compile-time availability errors when trying to use aligned
+// allocation/deallocation on deployment targets that don't support it (before macosx10.13).
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Aligned allocation was not provided before macosx10.13.
+// REQUIRES: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+#include <new>
+#include <cstddef>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+struct alignas(OverAligned) A { };
+
+int main(int, char**)
+{
+    // Normal versions
+    {
+        A *a1 = new A; // expected-error-re {{aligned allocation function of type {{.+}} is only available on}}
+        // `delete` is also required by the line above if construction fails
+        // expected-error-re@-2 {{aligned deallocation function of type {{.+}} is only available on}}
+
+        delete a1; // expected-error-re {{aligned deallocation function of type {{.+}} is only available on}}
+
+        A* a2 = new(std::nothrow) A; // expected-error-re {{aligned allocation function of type {{.+}} is only available on}}
+        // `delete` is also required above for the same reason
+        // expected-error-re@-2 {{aligned deallocation function of type {{.+}} is only available on}}
+    }
+
+    // Array versions
+    {
+        A *a1 = new A[2]; // expected-error-re {{aligned allocation function of type {{.+}} is only available on}}
+        // `delete` is also required by the line above if construction fails
+        // expected-error-re@-2 {{aligned deallocation function of type {{.+}} is only available on}}
+
+        delete[] a1; // expected-error-re {{aligned deallocation function of type {{.+}} is only available on}}
+
+        A* a2 = new(std::nothrow) A[2]; // expected-error-re {{aligned allocation function of type {{.+}} is only available on}}
+        // `delete` is also required above for the same reason
+        // expected-error-re@-2 {{aligned deallocation function of type {{.+}} is only available on}}
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/libcpp_deallocate.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/libcpp_deallocate.sh.cpp
new file mode 100644
index 0000000..545032b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/libcpp_deallocate.sh.cpp
@@ -0,0 +1,255 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test libc++'s implementation of align_val_t, and the relevant new/delete
+// overloads in all dialects when -faligned-allocation is present.
+
+// The dylibs shipped before macosx10.13 do not contain the aligned allocation
+// functions, so trying to force using those with -faligned-allocation results
+// in a link error.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// XFAIL: sanitizer-new-delete && !hwasan
+
+// It fails with clang-14 or clang-16, but passes with clang-15.
+// UNSUPPORTED: ubsan
+
+// GCC doesn't support the aligned-allocation flags.
+// XFAIL: gcc
+
+// RUN: %{build} -faligned-allocation -fsized-deallocation
+// RUN: %{run}
+// RUN: %{build} -faligned-allocation -fno-sized-deallocation -DNO_SIZE
+// RUN: %{run}
+// RUN: %{build} -fno-aligned-allocation -fsized-deallocation -DNO_ALIGN
+// RUN: %{run}
+// RUN: %{build} -fno-aligned-allocation -fno-sized-deallocation -DNO_ALIGN -DNO_SIZE
+// RUN: %{run}
+
+#include <new>
+#include <typeinfo>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct alloc_stats {
+  alloc_stats() { reset(); }
+
+  int aligned_sized_called;
+  int aligned_called;
+  int sized_called;
+  int plain_called;
+  int last_size;
+  int last_align;
+
+  void reset() {
+    aligned_sized_called = aligned_called = sized_called = plain_called = 0;
+    last_align = last_size = -1;
+  }
+
+  bool expect_plain() const {
+    assert(aligned_sized_called == 0);
+    assert(aligned_called == 0);
+    assert(sized_called == 0);
+    assert(last_size == -1);
+    assert(last_align == -1);
+    return plain_called == 1;
+  }
+
+  bool expect_size(int n) const {
+    assert(plain_called == 0);
+    assert(aligned_sized_called == 0);
+    assert(aligned_called == 0);
+    assert(last_size == n);
+    assert(last_align == -1);
+    return sized_called == 1;
+  }
+
+  bool expect_align(int a) const {
+    assert(plain_called == 0);
+    assert(aligned_sized_called == 0);
+    assert(sized_called == 0);
+    assert(last_size == -1);
+    assert(last_align == a);
+    return aligned_called == 1;
+  }
+
+  bool expect_size_align(int n, int a) const {
+    assert(plain_called == 0);
+    assert(sized_called == 0);
+    assert(aligned_called == 0);
+    assert(last_size == n);
+    assert(last_align == a);
+    return aligned_sized_called == 1;
+  }
+};
+alloc_stats stats;
+
+void operator delete(void* p)TEST_NOEXCEPT {
+  ::free(p);
+  stats.plain_called++;
+  stats.last_size = stats.last_align = -1;
+}
+
+#ifndef NO_SIZE
+void operator delete(void* p, size_t n)TEST_NOEXCEPT {
+  ::free(p);
+  stats.sized_called++;
+  stats.last_size = n;
+  stats.last_align = -1;
+}
+#endif
+
+#ifndef NO_ALIGN
+void operator delete(void* p, std::align_val_t a)TEST_NOEXCEPT {
+  std::__libcpp_aligned_free(p);
+  stats.aligned_called++;
+  stats.last_align = static_cast<int>(a);
+  stats.last_size = -1;
+}
+
+void operator delete(void* p, size_t n, std::align_val_t a)TEST_NOEXCEPT {
+  std::__libcpp_aligned_free(p);
+  stats.aligned_sized_called++;
+  stats.last_align = static_cast<int>(a);
+  stats.last_size = n;
+}
+#endif
+
+void test_libcpp_dealloc() {
+  void* p = nullptr;
+#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__
+  size_t over_align_val = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+#else
+  size_t over_align_val = TEST_ALIGNOF(std::max_align_t) * 2;
+#endif
+  size_t under_align_val = TEST_ALIGNOF(int);
+  size_t with_size_val = 2;
+
+  {
+    std::__libcpp_deallocate_unsized(p, under_align_val);
+    assert(stats.expect_plain());
+  }
+  stats.reset();
+
+#if defined(NO_SIZE) && defined(NO_ALIGN)
+  {
+    std::__libcpp_deallocate(p, with_size_val, over_align_val);
+    assert(stats.expect_plain());
+  }
+  stats.reset();
+#elif defined(NO_SIZE)
+  {
+    std::__libcpp_deallocate(p, with_size_val, over_align_val);
+    assert(stats.expect_align(over_align_val));
+  }
+  stats.reset();
+#elif defined(NO_ALIGN)
+  {
+    std::__libcpp_deallocate(p, with_size_val, over_align_val);
+    assert(stats.expect_size(with_size_val));
+  }
+  stats.reset();
+#else
+  {
+    std::__libcpp_deallocate(p, with_size_val, over_align_val);
+    assert(stats.expect_size_align(with_size_val, over_align_val));
+  }
+  stats.reset();
+  {
+    std::__libcpp_deallocate_unsized(p, over_align_val);
+    assert(stats.expect_align(over_align_val));
+  }
+  stats.reset();
+  {
+    std::__libcpp_deallocate(p, with_size_val, under_align_val);
+    assert(stats.expect_size(with_size_val));
+  }
+  stats.reset();
+#endif
+}
+
+struct TEST_ALIGNAS(128) AlignedType {
+  AlignedType() : elem(0) {}
+  TEST_ALIGNAS(128) char elem;
+};
+
+void test_allocator_and_new_match() {
+  stats.reset();
+#if defined(NO_SIZE) && defined(NO_ALIGN)
+  {
+    int* x = new int(42);
+    delete x;
+    assert(stats.expect_plain());
+  }
+  stats.reset();
+  {
+    AlignedType* a = new AlignedType();
+    delete a;
+    assert(stats.expect_plain());
+  }
+  stats.reset();
+#elif defined(NO_SIZE)
+  stats.reset();
+#if TEST_STD_VER >= 11
+  {
+    int* x = new int(42);
+    delete x;
+    assert(stats.expect_plain());
+  }
+#endif
+  stats.reset();
+  {
+    AlignedType* a = new AlignedType();
+    delete a;
+    assert(stats.expect_align(TEST_ALIGNOF(AlignedType)));
+  }
+  stats.reset();
+#elif defined(NO_ALIGN)
+  stats.reset();
+  {
+    int* x = new int(42);
+    delete x;
+    assert(stats.expect_size(sizeof(int)));
+  }
+  stats.reset();
+  {
+    AlignedType* a = new AlignedType();
+    delete a;
+    assert(stats.expect_size(sizeof(AlignedType)));
+  }
+  stats.reset();
+#else
+  stats.reset();
+  {
+    int* x = new int(42);
+    delete x;
+    assert(stats.expect_size(sizeof(int)));
+  }
+  stats.reset();
+  {
+    AlignedType* a = new AlignedType();
+    delete a;
+    assert(stats.expect_size_align(sizeof(AlignedType),
+                                   TEST_ALIGNOF(AlignedType)));
+  }
+  stats.reset();
+#endif
+}
+
+int main(int, char**) {
+  test_libcpp_dealloc();
+  test_allocator_and_new_match();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/new_faligned_allocation.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/new_faligned_allocation.pass.cpp
new file mode 100644
index 0000000..8820e12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/new_faligned_allocation.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test libc++'s implementation of align_val_t, and the relevant new/delete
+// overloads in all dialects when -faligned-allocation is present.
+
+// The dylibs shipped before macosx10.13 do not contain the aligned allocation
+// functions, so trying to force using those with -faligned-allocation results
+// in a link error.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+#include <typeinfo>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+static void test_allocations(size_t size, size_t alignment) {
+  {
+    void* ptr = ::operator new(size, std::align_val_t(alignment));
+    assert(ptr);
+    assert(reinterpret_cast<std::uintptr_t>(ptr) % alignment == 0);
+    ::operator delete(ptr, std::align_val_t(alignment));
+  }
+  {
+    void* ptr = ::operator new(size, std::align_val_t(alignment), std::nothrow);
+    assert(ptr);
+    assert(reinterpret_cast<std::uintptr_t>(ptr) % alignment == 0);
+    ::operator delete(ptr, std::align_val_t(alignment), std::nothrow);
+  }
+  {
+    void* ptr = ::operator new[](size, std::align_val_t(alignment));
+    assert(ptr);
+    assert(reinterpret_cast<std::uintptr_t>(ptr) % alignment == 0);
+    ::operator delete[](ptr, std::align_val_t(alignment));
+  }
+  {
+    void* ptr = ::operator new[](size, std::align_val_t(alignment), std::nothrow);
+    assert(ptr);
+    assert(reinterpret_cast<std::uintptr_t>(ptr) % alignment == 0);
+    ::operator delete[](ptr, std::align_val_t(alignment), std::nothrow);
+  }
+}
+
+int main(int, char**) {
+  {
+    static_assert(std::is_enum<std::align_val_t>::value, "");
+    typedef std::underlying_type<std::align_val_t>::type UT;
+    static_assert((std::is_same<UT, std::size_t>::value), "");
+  }
+  {
+    static_assert((!std::is_constructible<std::align_val_t, std::size_t>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert(!std::is_constructible<std::size_t, std::align_val_t>::value, "");
+#else
+    static_assert((std::is_constructible<std::size_t, std::align_val_t>::value), "");
+#endif
+  }
+  {
+    std::align_val_t a = std::align_val_t(0);
+    std::align_val_t b = std::align_val_t(32);
+    assert(a != b);
+    assert(a == std::align_val_t(0));
+    assert(b == std::align_val_t(32));
+  }
+  // First, check the basic case, a large allocation with alignment==size.
+  test_allocations(64, 64);
+  // Size being a multiple of alignment also needs to be supported.
+  test_allocations(64, 32);
+  // When aligned allocation is implemented using posix_memalign,
+  // that function requires a minimum alignment of sizeof(void*).
+  // Check that we can also create overaligned allocations with
+  // an alignment argument less than sizeof(void*).
+  test_allocations(2, 2);
+  // When implemented using the C11 aligned_alloc() function,
+  // that requires that size be a multiple of alignment.
+  // However, the C++ operator new has no such requirements.
+  // Check that we can create an overaligned allocation that does
+  // adhere to not have this constraint.
+  test_allocations(1, 128);
+  // Finally, test size > alignment, but with size not being
+  // a multiple of alignment.
+  test_allocations(65, 32);
+#ifndef TEST_HAS_NO_RTTI
+  {
+    // Check that libc++ doesn't define align_val_t in a versioning namespace.
+    // And that it mangles the same in C++03 through C++17
+#ifdef _MSC_VER
+    // MSVC uses a different C++ ABI with a different name mangling scheme.
+    // The type id name doesn't seem to contain the mangled form at all.
+    assert(typeid(std::align_val_t).name() == std::string("enum std::align_val_t"));
+#else
+    assert(typeid(std::align_val_t).name() == std::string("St11align_val_t"));
+#endif
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/version.pass.cpp
new file mode 100644
index 0000000..40a7f8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.dynamic/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+#include <new>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.exception/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.exception/version.pass.cpp
new file mode 100644
index 0000000..e46ab3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.exception/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <exception>
+
+#include <exception>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.initlist/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.initlist/version.pass.cpp
new file mode 100644
index 0000000..4691706
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.initlist/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <initializer_list>
+
+#include <initializer_list>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/c.limits/version_cfloat.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/c.limits/version_cfloat.pass.cpp
new file mode 100644
index 0000000..9b4a33b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/c.limits/version_cfloat.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cfloat>
+
+#include <cfloat>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/c.limits/version_climits.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/c.limits/version_climits.pass.cpp
new file mode 100644
index 0000000..1aba72d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/c.limits/version_climits.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <climits>
+
+#include <climits>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/limits/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/limits/version.pass.cpp
new file mode 100644
index 0000000..76076bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/limits/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <limits>
+
+#include <limits>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/version.pass.cpp
new file mode 100644
index 0000000..b473120
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.limits/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <version>
+
+#include <version>
+
+#include "test_macros.h"
+
+#if !defined(_LIBCPP_VERSION)
+#error "_LIBCPP_VERSION must be defined after including <version>"
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.apple.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.apple.compile.pass.cpp
new file mode 100644
index 0000000..6c6b1d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.apple.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test makes sure that we use the correct implementation for comparing
+// type_info objects on Apple platforms. See https://llvm.org/PR45549.
+
+// REQUIRES: darwin
+
+#include <typeinfo>
+
+#if !defined(_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION)
+#   error "_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION should be defined on Apple platforms"
+#endif
+
+#if defined(__x86_64__) || defined(__ARM_ARCH_7M__)
+#   if _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION != 1
+#       error "_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION should be 1 (assume RTTI is merged) on Apple platforms"
+#   endif
+#elif defined(__aarch64__)
+#   if _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION != 3
+#       error "_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION should be 3 (use the special ARM RTTI) on Apple platforms"
+#   endif
+#else
+#   error "This test should be updated to pin down the RTTI behavior on this ABI."
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.merged.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.merged.sh.cpp
new file mode 100644
index 0000000..da82ea1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.merged.sh.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-rtti
+
+// In MSVC mode, the two anonymous types have identical type index in both object files.
+// XFAIL: msvc
+
+// RUN: %{cxx} %s %{flags} %{compile_flags} -c -o %t.tu1.o -DTU1 -D_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION=1
+// RUN: %{cxx} %s %{flags} %{compile_flags} -c -o %t.tu2.o -DTU2 -D_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION=1
+// RUN: %{cxx} %s %{flags} %{compile_flags} -c -o %t.main.o -DMAIN -D_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION=1
+// RUN: %{cxx} %t.tu1.o %t.tu2.o %t.main.o %{flags} %{link_flags} -o %t.exe
+// RUN: %{exec} %t.exe
+
+#include <cassert>
+#include <typeindex>
+#include <vector>
+
+extern std::vector<std::type_index> registry;
+
+void register1();
+void register2();
+
+#if defined(TU1)
+  namespace { struct A { bool x; }; }
+  void register1() { registry.push_back(std::type_index(typeid(A))); }
+#elif defined(TU2)
+  namespace { struct A { int x, y; }; }
+  void register2() { registry.push_back(std::type_index(typeid(A))); }
+#elif defined(MAIN)
+  std::vector<std::type_index> registry;
+
+  int main(int, char**) {
+    register1();
+    register2();
+
+    assert(registry.size() == 2);
+    assert(registry[0] != registry[1]);
+    return 0;
+  }
+#else
+# error
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.unmerged.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.unmerged.sh.cpp
new file mode 100644
index 0000000..9b94fcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/type.info/type_info.comparison.unmerged.sh.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-rtti
+
+// RUN: %{cxx} %s %{flags} %{compile_flags} -c -o %t.tu1.o -DTU1 -D_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION=2
+// RUN: %{cxx} %s %{flags} %{compile_flags} -c -o %t.tu2.o -DTU2 -D_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION=2
+// RUN: %{cxx} %s %{flags} %{compile_flags} -c -o %t.main.o -DMAIN -D_LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION=2
+// RUN: %{cxx} %t.tu1.o %t.tu2.o %t.main.o %{flags} %{link_flags} -o %t.exe
+// RUN: %{exec} %t.exe
+
+#include <cassert>
+#include <typeindex>
+#include <vector>
+
+extern std::vector<std::type_index> registry;
+
+void register1();
+void register2();
+
+#if defined(TU1)
+  namespace { struct A { bool x; }; }
+  void register1() { registry.push_back(std::type_index(typeid(A))); }
+#elif defined(TU2)
+  namespace { struct A { int x, y; }; }
+  void register2() { registry.push_back(std::type_index(typeid(A))); }
+#elif defined(MAIN)
+  std::vector<std::type_index> registry;
+
+  int main(int, char**) {
+    register1();
+    register2();
+
+    assert(registry.size() == 2);
+    assert(registry[0] == registry[1]);
+    return 0;
+  }
+#else
+# error
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/version.pass.cpp
new file mode 100644
index 0000000..2138801
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.rtti/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeinfo>
+
+#include <typeinfo>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_csetjmp.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_csetjmp.pass.cpp
new file mode 100644
index 0000000..2069667
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_csetjmp.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <csetjmp>
+
+#include <csetjmp>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_csignal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_csignal.pass.cpp
new file mode 100644
index 0000000..f688ffd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_csignal.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <csignal>
+
+#include <csignal>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdarg.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdarg.pass.cpp
new file mode 100644
index 0000000..bdb2c0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdarg.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstdarg>
+
+#include <cstdarg>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdbool.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdbool.pass.cpp
new file mode 100644
index 0000000..0c17570
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdbool.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstdbool>
+
+#include <cstdbool>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdlib.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdlib.pass.cpp
new file mode 100644
index 0000000..3932cf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_cstdlib.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstdlib>
+
+#include <cstdlib>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_ctime.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_ctime.pass.cpp
new file mode 100644
index 0000000..9bf285a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.runtime/version_ctime.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ctime>
+
+#include <ctime>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.types/cstddef.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.types/cstddef.compile.pass.cpp
new file mode 100644
index 0000000..514353a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.types/cstddef.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure libc++'s <cstddef> defines types like ::nullptr_t in the global namespace.
+// This is a conforming extension to be consistent with other implementations, which all
+// appear to provide that behavior too.
+
+#include <cstddef>
+#include "test_macros.h"
+
+using PtrdiffT = ::ptrdiff_t;
+using SizeT = ::size_t;
+#if TEST_STD_VER >= 11
+using MaxAlignT = ::max_align_t;
+#endif
+
+// Supported in C++03 mode too for backwards compatibility with previous versions of libc++
+using NullptrT = ::nullptr_t;
+
+// Also ensure that we provide std::nullptr_t in C++03 mode, which is an extension too.
+using StdNullptrT = std::nullptr_t;
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/support.types/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.types/version.pass.cpp
new file mode 100644
index 0000000..c263118
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/support.types/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstddef>
+
+#include <cstddef>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/language.support/timespec_get.xopen.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/language.support/timespec_get.xopen.compile.pass.cpp
new file mode 100644
index 0000000..cf4c595
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/language.support/timespec_get.xopen.compile.pass.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Make sure that <ctime> can be included even when _XOPEN_SOURCE is defined.
+// This used to trigger some bug in Apple SDKs, since timespec_get was not
+// defined in <time.h> but we tried using it from <ctime>.
+// See https://llvm.org/PR47208 for details.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_XOPEN_SOURCE=500
+
+#include <ctime>
diff --git a/app/src/main/cpp/libcxx/test/libcxx/libcpp_alignof.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/libcpp_alignof.pass.cpp
new file mode 100644
index 0000000..3ae7f74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/libcpp_alignof.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that _LIBCPP_ALIGNOF acts the same as the C++11 keyword `alignof`, and
+// not as the GNU extension `__alignof`. The former returns the minimal required
+// alignment for a type, whereas the latter returns the preferred alignment.
+//
+// See llvm.org/PR39713
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test() {
+  static_assert(_LIBCPP_ALIGNOF(T) == std::alignment_of<T>::value, "");
+  static_assert(_LIBCPP_ALIGNOF(T) == TEST_ALIGNOF(T), "");
+#if TEST_STD_VER >= 11
+  static_assert(_LIBCPP_ALIGNOF(T) == alignof(T), "");
+#endif
+#ifdef TEST_COMPILER_CLANG
+  static_assert(_LIBCPP_ALIGNOF(T) == _Alignof(T), "");
+#endif
+}
+
+int main(int, char**) {
+  test<int>();
+  test<long long>();
+  test<double>();
+  test<long double>();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/libcpp_freestanding.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/libcpp_freestanding.sh.cpp
new file mode 100644
index 0000000..8dd7a8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/libcpp_freestanding.sh.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that _LIBCPP_FREESTANDING is not defined when -ffreestanding is not passed
+// to the compiler but defined when -ffreestanding is passed to the compiler.
+
+// RUN: %{cxx} %{flags} %{compile_flags} -fsyntax-only %s
+// RUN: %{cxx} %{flags} %{compile_flags} -fsyntax-only -ffreestanding -DFREESTANDING %s
+
+#include <__config>
+
+#if defined(FREESTANDING) != defined(_LIBCPP_FREESTANDING)
+#error _LIBCPP_FREESTANDING should be defined in freestanding mode and not \
+       defined in non-freestanding mode
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/lint/lint_cmakelists.sh.py b/app/src/main/cpp/libcxx/test/libcxx/lint/lint_cmakelists.sh.py
new file mode 100644
index 0000000..1a94b44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/lint/lint_cmakelists.sh.py
@@ -0,0 +1,31 @@
+# RUN: %{python} %s
+
+# Verify that libcxx/include/CMakeLists.txt's list of header files
+# is maintained in alphabetical order.
+
+import os
+
+
+if __name__ == '__main__':
+    libcxx_test_libcxx_lint = os.path.dirname(os.path.abspath(__file__))
+    libcxx = os.path.abspath(os.path.join(libcxx_test_libcxx_lint, '../../..'))
+    cmakelists_name = os.path.join(libcxx, 'include/CMakeLists.txt')
+    assert os.path.isfile(cmakelists_name)
+
+    with open(cmakelists_name, 'r') as f:
+        lines = f.readlines()
+
+    assert lines[0] == 'set(files\n'
+
+    okay = True
+    prevline = lines[1]
+    for line in lines[2:]:
+        if (line == '  )\n'):
+            break
+        if (line < prevline):
+            okay = False
+            print('LINES OUT OF ORDER in libcxx/include/CMakeLists.txt!')
+            print(prevline)
+            print(line)
+        prevline = line
+    assert okay
diff --git a/app/src/main/cpp/libcxx/test/libcxx/lint/lint_headers.sh.py b/app/src/main/cpp/libcxx/test/libcxx/lint/lint_headers.sh.py
new file mode 100644
index 0000000..cb6054c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/lint/lint_headers.sh.py
@@ -0,0 +1,55 @@
+# RUN: %{python} %s
+
+# Verify that each run of consecutive #include directives
+# in each libcxx/include/ header is maintained in alphabetical order.
+
+import glob
+import os
+import re
+
+
+def exclude_from_consideration(path):
+    return (
+        path.endswith('.txt') or
+        path.endswith('.modulemap.in') or
+        os.path.basename(path) == '__config' or
+        os.path.basename(path) == '__config_site.in' or
+        os.path.basename(path) == 'libcxx.imp' or
+        not os.path.isfile(path)
+    )
+
+
+def check_for_pragma_GCC_system_header(pretty_fname, lines):
+    if pretty_fname not in ['__undef_macros']:
+        for line in lines:
+            if re.match('# *pragma GCC system_header\n', line):
+                return True
+        print('FAILED TO FIND #  pragma GCC system_header in libcxx/include/%s' % pretty_fname)
+        return False
+    return True
+
+
+if __name__ == '__main__':
+    libcxx_test_libcxx_lint = os.path.dirname(os.path.abspath(__file__))
+    libcxx_include = os.path.abspath(os.path.join(libcxx_test_libcxx_lint, '../../../include'))
+    assert os.path.isdir(libcxx_include)
+
+    def pretty(path):
+        return path[len(libcxx_include) + 1:]
+
+    all_headers = [
+        p for p in (
+            glob.glob(os.path.join(libcxx_include, '*')) +
+            glob.glob(os.path.join(libcxx_include, '__*/*.h'))
+        ) if not exclude_from_consideration(p)
+    ]
+
+    okay = True
+    for fname in all_headers:
+        pretty_fname = pretty(fname)
+        with open(fname, 'r') as f:
+            lines = f.readlines()
+
+        okay = check_for_pragma_GCC_system_header(pretty_fname, lines) and okay
+
+    assert okay
diff --git a/app/src/main/cpp/libcxx/test/libcxx/lint/lint_modulemap.sh.py b/app/src/main/cpp/libcxx/test/libcxx/lint/lint_modulemap.sh.py
new file mode 100644
index 0000000..bbb5885
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/lint/lint_modulemap.sh.py
@@ -0,0 +1,45 @@
+# RUN: %{python} %s
+
+# Verify that each list of private submodules in libcxx/include/module.modulemap.in
+# is maintained in alphabetical order.
+
+import os
+import re
+
+
+if __name__ == '__main__':
+    libcxx_test_libcxx_lint = os.path.dirname(os.path.abspath(__file__))
+    libcxx = os.path.abspath(os.path.join(libcxx_test_libcxx_lint, '../../..'))
+    modulemap_name = os.path.join(libcxx, 'include/module.modulemap.in')
+    assert os.path.isfile(modulemap_name)
+
+    okay = True
+    prevline = None
+    with open(modulemap_name, 'r') as f:
+        for line in f.readlines():
+            if re.match(r'^\s*module.*[{]\s*private', line):
+                # Check that these lines are all of the expected format.
+                # This incidentally checks for typos in the module name.
+                if re.match(r'^\s*module (\w+)\s+[{] private header "\1(.h)?"\s+export [*] [}]', line):
+                    # It's a top-level private header, such as <__bit_reference>.
+                    pass
+                elif re.match(r'^\s*module (\w+)\s+[{] private header "__\w+/\1[.]h" [}]', line):
+                    # It's a private submodule, such as <__utility/swap.h>.
+                    pass
+                elif re.match(r'^\s*module (\w+)_fwd\s+[{] private header "__fwd/\1[.]h" [}]', line):
+                    # It's a private submodule with forward declarations, such as <__fwd/span.h>.
+                    pass
+                else:
+                    okay = False
+                    print("LINE DOESN'T MATCH REGEX in libcxx/include/module.modulemap.in!")
+                    print(line)
+                # Check that these lines are alphabetized.
+                if (prevline is not None) and (line < prevline):
+                    okay = False
+                    print('LINES OUT OF ORDER in libcxx/include/module.modulemap.in!')
+                    print(prevline)
+                    print(line)
+                prevline = line
+            else:
+                prevline = None
+    assert okay
diff --git a/app/src/main/cpp/libcxx/test/libcxx/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/lit.local.cfg
new file mode 100644
index 0000000..f328db3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/lit.local.cfg
@@ -0,0 +1,3 @@
+# The tests in this directory need to run Python
+import pipes, sys
+config.substitutions.append(('%{python}', pipes.quote(sys.executable)))
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/c.locales/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/c.locales/version.pass.cpp
new file mode 100644
index 0000000..e5b6e41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/c.locales/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <clocale>
+
+#include <clocale>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/localization/lit.local.cfg
new file mode 100644
index 0000000..b89e35b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/lit.local.cfg
@@ -0,0 +1,6 @@
+# Load the same local configuration as the corresponding one in libcxx/test/std
+import os
+inLibcxx = os.path.join('libcxx', 'test', 'libcxx')
+inStd = os.path.join('libcxx', 'test', 'std')
+localConfig = os.path.normpath(os.path.realpath(__file__)).replace(inLibcxx, inStd)
+config.load_from_path(localConfig, lit_config)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locale.categories/__scan_keyword.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locale.categories/__scan_keyword.pass.cpp
new file mode 100644
index 0000000..1ecf378
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locale.categories/__scan_keyword.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// Not a portable test
+
+// __scan_keyword
+// Scans [__b, __e) until a match is found in the basic_strings range
+//  [__kb, __ke) or until it can be shown that there is no match in [__kb, __ke).
+//  __b will be incremented (visibly), consuming CharT until a match is found
+//  or proved to not exist.  A keyword may be "", in which will match anything.
+//  If one keyword is a prefix of another, and the next CharT in the input
+//  might match another keyword, the algorithm will attempt to find the longest
+//  matching keyword.  If the longer matching keyword ends up not matching, then
+//  no keyword match is found.  If no keyword match is found, __ke is returned.
+//  Else an iterator pointing to the matching keyword is found.  If more than
+//  one keyword matches, an iterator to the first matching keyword is returned.
+//  If on exit __b == __e, eofbit is set in __err.  If __case_sensitive is false,
+//  __ct is used to force to lower case before comparing characters.
+//  Examples:
+//  Keywords:  "a", "abb"
+//  If the input is "a", the first keyword matches and eofbit is set.
+//  If the input is "abc", no match is found and "ab" are consumed.
+//
+// template <class _InputIterator, class _ForwardIterator, class _Ctype>
+// _ForwardIterator
+// __scan_keyword(_InputIterator& __b, _InputIterator __e,
+//                _ForwardIterator __kb, _ForwardIterator __ke,
+//                const _Ctype& __ct, ios_base::iostate& __err,
+//                bool __case_sensitive = true);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::ctype<char>& ct = std::use_facet<std::ctype<char> >(std::locale::classic());
+    std::ios_base::iostate err = std::ios_base::goodbit;
+    {
+        const char input[] = "a";
+        const char* in = input;
+        std::string keys[] = {"a", "abb"};
+        err = std::ios_base::goodbit;
+        std::string* k = std::__scan_keyword(in, input+sizeof(input)-1,
+                                             keys, keys+sizeof(keys)/sizeof(keys[0]),
+                                             ct, err);
+        assert(k - keys == 0);
+        assert(in == input+1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char input[] = "abc";
+        const char* in = input;
+        std::string keys[] = {"a", "abb"};
+        err = std::ios_base::goodbit;
+        std::string* k = std::__scan_keyword(in, input+sizeof(input)-1,
+                                             keys, keys+sizeof(keys)/sizeof(keys[0]),
+                                             ct, err);
+        assert(k - keys == 2);
+        assert(in == input+2);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const char input[] = "abb";
+        const char* in = input;
+        std::string keys[] = {"a", "abb"};
+        err = std::ios_base::goodbit;
+        std::string* k = std::__scan_keyword(in, input+sizeof(input)-1,
+                                             keys, keys+sizeof(keys)/sizeof(keys[0]),
+                                             ct, err);
+        assert(k - keys == 1);
+        assert(in == input+3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char input[] = "Tue ";
+        const char* in = input;
+        std::string keys[] = {"Mon", "Monday", "Tue", "Tuesday"};
+        err = std::ios_base::goodbit;
+        std::string* k = std::__scan_keyword(in, input+sizeof(input)-1,
+                                             keys, keys+sizeof(keys)/sizeof(keys[0]),
+                                             ct, err);
+        assert(k - keys == 2);
+        assert(in == input+3);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const char input[] = "tue ";
+        const char* in = input;
+        std::string keys[] = {"Mon", "Monday", "Tue", "Tuesday"};
+        err = std::ios_base::goodbit;
+        std::string* k = std::__scan_keyword(in, input+sizeof(input)-1,
+                                             keys, keys+sizeof(keys)/sizeof(keys[0]),
+                                             ct, err);
+        assert(k - keys == 4);
+        assert(in == input+0);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const char input[] = "tue ";
+        const char* in = input;
+        std::string keys[] = {"Mon", "Monday", "Tue", "Tuesday"};
+        err = std::ios_base::goodbit;
+        std::string* k = std::__scan_keyword(in, input+sizeof(input)-1,
+                                             keys, keys+sizeof(keys)/sizeof(keys[0]),
+                                             ct, err, false);
+        assert(k - keys == 2);
+        assert(in == input+3);
+        assert(err == std::ios_base::goodbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locale.stdcvt/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locale.stdcvt/version.pass.cpp
new file mode 100644
index 0000000..e97819b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locale.stdcvt/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+#include <codecvt>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.abort.pass.cpp
new file mode 100644
index 0000000..9a47eb8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.abort.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class locale;
+
+// explicit locale( const char* std_name );
+
+// REQUIRES: no-exceptions
+
+// Make sure we abort() when we construct a locale with a null name and
+// exceptions are disabled.
+
+#include <csignal>
+#include <cstdlib>
+#include <locale>
+
+#include "test_macros.h"
+
+
+void exit_success(int) {
+    std::_Exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+    std::signal(SIGABRT, exit_success);
+    std::locale loc(NULL);
+    (void)loc;
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.category.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.category.abort.pass.cpp
new file mode 100644
index 0000000..9b321e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.category.abort.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class locale;
+
+// locale(const locale& other, const char* std_name, category cat);
+
+// REQUIRES: no-exceptions
+
+// Make sure we abort() when we construct a locale with a null name and
+// exceptions are disabled.
+
+#include <csignal>
+#include <cstdlib>
+#include <locale>
+
+#include "test_macros.h"
+
+
+void exit_success(int) {
+    std::_Exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+    std::signal(SIGABRT, exit_success);
+    std::locale loc(std::locale(), NULL, std::locale::ctype);
+    (void)loc;
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.convenience/conversions/conversions.string/ctor_move.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.convenience/conversions/conversions.string/ctor_move.pass.cpp
new file mode 100644
index 0000000..61e9208
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale.convenience/conversions/conversions.string/ctor_move.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// UNSUPPORTED: c++03
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// wstring_convert(wstring_convert&& other); // EXTENSION
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt_utf8<wchar_t> Codecvt;
+    typedef std::wstring_convert<Codecvt> Myconv;
+    // create a converter and perform some conversions to generate some
+    // interesting state.
+    Myconv myconv;
+    myconv.from_bytes("\xEF\xBF\xBD");
+    const auto old_converted = myconv.converted();
+    assert(myconv.converted() == 3);
+    // move construct a new converter and make sure the state is the same.
+    Myconv myconv2(std::move(myconv));
+    assert(myconv2.converted() == old_converted);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.facet/facet.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.facet/facet.pass.cpp
new file mode 100644
index 0000000..072c85a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.facet/facet.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class locale::facet
+// {
+// protected:
+//     explicit facet(size_t refs = 0);
+//     virtual ~facet();
+//     facet(const facet&) = delete;
+//     void operator=(const facet&) = delete;
+// };
+
+// This test isn't portable
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct my_facet
+    : public std::locale::facet
+{
+    static int count;
+    my_facet(unsigned refs = 0)
+        : std::locale::facet(refs)
+        {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    my_facet* f = new my_facet;
+    f->__add_shared();
+    assert(my_facet::count == 1);
+    f->__release_shared();
+    assert(my_facet::count == 0);
+    f = new my_facet(1);
+    f->__add_shared();
+    assert(my_facet::count == 1);
+    f->__release_shared();
+    assert(my_facet::count == 1);
+    f->__release_shared();
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.facet/no_allocation.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.facet/no_allocation.pass.cpp
new file mode 100644
index 0000000..6e59b82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.facet/no_allocation.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// This test verifies that the construction of locale::__imp does not allocate
+// for facets, as it uses __sso_allocator<facet*, N>. It would fail if new
+// facets have been added (using install()) but N hasn't been adjusted to
+// account for them.
+
+#include <cassert>
+
+#include "count_new.h"
+
+int main(int, char**) {
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.id/id.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.id/id.pass.cpp
new file mode 100644
index 0000000..5e01134
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/locale/locale.types/locale.id/id.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class locale::id
+// {
+// public:
+//     id();
+//     void operator=(const id&) = delete;
+//     id(const id&) = delete;
+// };
+
+// This test isn't portable
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+std::locale::id id0;
+std::locale::id id2;
+std::locale::id id1;
+
+int main(int, char**)
+{
+    long id = id0.__get();
+    assert(id0.__get() == id+0);
+    assert(id0.__get() == id+0);
+    assert(id0.__get() == id+0);
+    assert(id1.__get() == id+1);
+    assert(id1.__get() == id+1);
+    assert(id1.__get() == id+1);
+    assert(id2.__get() == id+2);
+    assert(id2.__get() == id+2);
+    assert(id2.__get() == id+2);
+    assert(id0.__get() == id+0);
+    assert(id0.__get() == id+0);
+    assert(id0.__get() == id+0);
+    assert(id1.__get() == id+1);
+    assert(id1.__get() == id+1);
+    assert(id1.__get() == id+1);
+    assert(id2.__get() == id+2);
+    assert(id2.__get() == id+2);
+    assert(id2.__get() == id+2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/locales/use_facet.abort.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/use_facet.abort.pass.cpp
new file mode 100644
index 0000000..9b4755a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/locales/use_facet.abort.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class Facet> const Facet& use_facet(const locale& loc);
+
+// REQUIRES: no-exceptions
+
+// Make sure we abort() when we pass a facet not associated to the locale to
+// use_facet() and exceptions are disabled.
+
+#include <csignal>
+#include <cstdlib>
+#include <locale>
+
+#include "test_macros.h"
+
+
+struct my_facet : public std::locale::facet {
+    static std::locale::id id;
+};
+
+std::locale::id my_facet::id;
+
+void exit_success(int) {
+    std::_Exit(EXIT_SUCCESS);
+}
+
+int main(int, char**) {
+    std::signal(SIGABRT, exit_success);
+    std::use_facet<my_facet>(std::locale());
+    return EXIT_FAILURE;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/localization/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/localization/version.pass.cpp
new file mode 100644
index 0000000..7750f4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/localization/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+#include <locale>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/mem/mem.res/nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/mem/mem.res/nodiscard.verify.cpp
new file mode 100644
index 0000000..9ccdcff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/mem/mem.res/nodiscard.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// check that functions are marked [[nodiscard]] as an extension in C++17
+
+// [[nodiscard]] std::pmr::memory_resource::allocate(size_t, size_t);
+// [[nodiscard]] std::pmr::polymorphic_allocator<T>::allocate(size_t, size_t);
+
+#include <memory_resource>
+
+void f() {
+  std::pmr::memory_resource* res = nullptr;
+  res->allocate(0);    // expected-warning {{ignoring return value of function}}
+  res->allocate(0, 1); // expected-warning {{ignoring return value of function}}
+
+  std::pmr::polymorphic_allocator<int> poly;
+  poly.allocate(0); // expected-warning {{ignoring return value of function}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp
new file mode 100644
index 0000000..5c28ff9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/aligned_allocation_macro.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+#include <new>
+
+#include "test_macros.h"
+
+
+#ifdef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
+#   error "libc++ should have aligned allocation in C++17 and up when targeting a platform that supports it"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/allocator_void.trivial.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/allocator_void.trivial.compile.pass.cpp
new file mode 100644
index 0000000..f9d67c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/allocator_void.trivial.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that std::allocator<void> is trivial. This was the case before C++20
+// with the std::allocator<void> explicit specialization, and this test makes sure
+// that we maintain that property across all standards.
+//
+// This is important since triviality has implications on how the type is passed
+// as a function argument in the ABI.
+
+#include <memory>
+#include <type_traits>
+
+typedef std::allocator<void> A1;
+typedef std::allocator<void const> A2;
+struct A3 : std::allocator<void> { };
+struct A4 : std::allocator<void const> { };
+
+static_assert(std::is_trivially_default_constructible<A1>::value, "");
+static_assert(std::is_trivial<A1>::value, "");
+
+static_assert(std::is_trivially_default_constructible<A2>::value, "");
+static_assert(std::is_trivial<A2>::value, "");
+
+static_assert(std::is_trivially_default_constructible<A3>::value, "");
+static_assert(std::is_trivial<A3>::value, "");
+
+static_assert(std::is_trivially_default_constructible<A4>::value, "");
+static_assert(std::is_trivial<A4>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/allocator_volatile.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/allocator_volatile.verify.cpp
new file mode 100644
index 0000000..6fa7fe1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/allocator_volatile.verify.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// http://wg21.link/LWG2447 gives implementors freedom to reject volatile types in `std::allocator`.
+
+#include <memory>
+
+std::allocator<volatile int> A1; // expected-error@*:* {{std::allocator does not support volatile types}}
+std::allocator<const volatile int> A2; // expected-error@*:* {{std::allocator does not support volatile types}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp
new file mode 100644
index 0000000..8bc890a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/compressed_pair/compressed_pair.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <assert.h>
+#include <memory>
+#include <new>
+
+#include "test_macros.h"
+
+typedef std::__compressed_pair<int, unsigned> IntPair;
+
+void test_constructor() {
+  IntPair value;
+  assert(value.first() == 0);
+  assert(value.second() == 0);
+
+  value.first() = 1;
+  value.second() = 2;
+  new (&value) IntPair;
+  assert(value.first() == 0);
+  assert(value.second() == 0);
+}
+
+void test_constructor_default_init() {
+  IntPair value;
+  value.first() = 1;
+  value.second() = 2;
+
+  new (&value) IntPair(std::__default_init_tag(), 3);
+  assert(value.first() == 1);
+  assert(value.second() == 3);
+
+  new (&value) IntPair(4, std::__default_init_tag());
+  assert(value.first() == 4);
+  assert(value.second() == 3);
+
+  new (&value) IntPair(std::__default_init_tag(), std::__default_init_tag());
+  assert(value.first() == 4);
+  assert(value.second() == 3);
+}
+
+int main(int, char**)
+{
+  test_constructor();
+  test_constructor_default_init();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/is_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/is_allocator.pass.cpp
new file mode 100644
index 0000000..cf11d07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/is_allocator.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <memory>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<typename _Alloc>
+// struct __is_allocator;
+
+// Is either true_type or false_type depending on if A is an allocator.
+
+#include <memory>
+#include <string>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <typename T>
+void test_allocators()
+{
+    static_assert(!std::__is_allocator<T>::value, "" );
+    static_assert( std::__is_allocator<std::allocator<T>>::value, "" );
+    static_assert( std::__is_allocator<test_allocator<T>>::value, "" );
+    static_assert( std::__is_allocator<min_allocator<T>>::value, "" );
+}
+
+
+int main(int, char**)
+{
+    // test_allocators<void>();
+    test_allocators<char>();
+    test_allocators<int>();
+    test_allocators<std::string>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/swap_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/swap_allocator.pass.cpp
new file mode 100644
index 0000000..5eeb1be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/swap_allocator.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <memory>
+
+// template <typename _Alloc>
+// void __swap_allocator(_Alloc& __a1, _Alloc& __a2);
+
+#include <cassert>
+#include <memory>
+// Transitively includes `swap_allocator.h` (directly including it breaks the modules build).
+#include <vector>
+#include <utility>
+
+#include "test_macros.h"
+
+template <bool Propagate, bool Noexcept>
+struct Alloc {
+  int i = 0;
+  Alloc() = default;
+  Alloc(int set_i) : i(set_i) {}
+
+  using value_type = int;
+  using propagate_on_container_swap = std::integral_constant<bool, Propagate>;
+
+  friend void swap(Alloc& a1, Alloc& a2) TEST_NOEXCEPT_COND(Noexcept) {
+    std::swap(a1.i, a2.i);
+  }
+
+};
+
+using PropagatingAlloc = Alloc</*Propagate=*/true, /*Noexcept=*/true>;
+static_assert(std::allocator_traits<PropagatingAlloc>::propagate_on_container_swap::value, "");
+
+using NonPropagatingAlloc = Alloc</*Propagate=*/false, /*Noexcept=*/true>;
+static_assert(!std::allocator_traits<NonPropagatingAlloc>::propagate_on_container_swap::value, "");
+
+using NoexceptSwapAlloc = Alloc</*Propagate=*/true, /*Noexcept=*/true>;
+using ThrowingSwapAlloc = Alloc</*Propagate=*/true, /*Noexcept=*/false>;
+
+int main(int, char**) {
+  {
+    PropagatingAlloc a1(1), a2(42);
+    std::__swap_allocator(a1, a2);
+    assert(a1.i == 42);
+    assert(a2.i == 1);
+  }
+
+  {
+    NonPropagatingAlloc a1(1), a2(42);
+    std::__swap_allocator(a1, a2);
+    assert(a1.i == 1);
+    assert(a2.i == 42);
+  }
+
+#if TEST_STD_VER >= 11
+  {
+    NoexceptSwapAlloc noexcept_alloc;
+    static_assert(noexcept(std::__swap_allocator(noexcept_alloc, noexcept_alloc)), "");
+  }
+
+#if TEST_STD_VER > 11
+  { // From C++14, `__swap_allocator` is unconditionally noexcept.
+    ThrowingSwapAlloc throwing_alloc;
+    static_assert(noexcept(std::__swap_allocator(throwing_alloc, throwing_alloc)), "");
+  }
+#else
+  { // Until C++14, `__swap_allocator` is only noexcept if the underlying `swap` function is `noexcept`.
+    ThrowingSwapAlloc throwing_alloc;
+    static_assert(!noexcept(std::__swap_allocator(throwing_alloc, throwing_alloc)), "");
+  }
+#endif // TEST_STD_VER > 11
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/shared_ptr_arg.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/shared_ptr_arg.pass.cpp
new file mode 100644
index 0000000..601c6c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/shared_ptr_arg.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Test shared_ptr<T> with trivial_abi as parameter type.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI
+
+// XFAIL: gcc
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+__attribute__((noinline)) void call_something() { asm volatile(""); }
+
+struct Node {
+  int* shared_val;
+
+  explicit Node(int* ptr) : shared_val(ptr) {}
+  ~Node() { ++(*shared_val); }
+};
+
+__attribute__((noinline)) bool get_val(std::shared_ptr<Node> /*unused*/) {
+  call_something();
+  return true;
+}
+
+__attribute__((noinline)) void expect_1(int* shared, bool /*unused*/) {
+  assert(*shared == 1);
+}
+
+int main(int, char**) {
+  int shared = 0;
+
+  // Without trivial-abi, the shared_ptr is deleted at the end of this
+  // statement; expect_1 will see shared == 0 because it's not incremented (in
+  // ~Node()) until expect_1 returns.
+  //
+  // With trivial-abi, expect_1 will see shared == 1 because shared_val is
+  // incremented before get_val returns.
+  expect_1(&shared, get_val(std::make_shared<Node>(&shared)));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_arg.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_arg.pass.cpp
new file mode 100644
index 0000000..8a7367b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_arg.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Test unique_ptr<T> with trivial_abi as parameter type.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI
+
+// XFAIL: gcc
+
+#include <memory>
+#include <cassert>
+
+__attribute__((noinline)) void call_something() { asm volatile(""); }
+
+struct Node {
+  int* shared_val;
+
+  explicit Node(int* ptr) : shared_val(ptr) {}
+  ~Node() { ++(*shared_val); }
+};
+
+__attribute__((noinline)) bool get_val(std::unique_ptr<Node> /*unused*/) {
+  call_something();
+  return true;
+}
+
+__attribute__((noinline)) void expect_1(int* shared, bool /*unused*/) {
+  assert(*shared == 1);
+}
+
+int main(int, char**) {
+  int shared = 0;
+
+  // Without trivial-abi, the unique_ptr is deleted at the end of this
+  // statement; expect_1 will see shared == 0 because it's not incremented (in
+  // ~Node()) until expect_1 returns.
+  //
+  // With trivial-abi, expect_1 will see shared == 1 because shared_val is
+  // incremented before get_val returns.
+  expect_1(&shared, get_val(std::unique_ptr<Node>(new Node(&shared))));
+
+  // Check that the shared-value is still 1.
+  expect_1(&shared, true);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_array.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_array.pass.cpp
new file mode 100644
index 0000000..ba436d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_array.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Test unique_ptr<T[]> with trivial_abi as parameter type.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI
+
+// XFAIL: gcc
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+__attribute__((noinline)) void call_something() { asm volatile(""); }
+
+struct Node {
+  int* shared_val;
+
+  explicit Node(int* ptr) : shared_val(ptr) {}
+  ~Node() { ++(*shared_val); }
+};
+
+__attribute__((noinline)) bool get_val(std::unique_ptr<Node[]> /*unused*/) {
+  call_something();
+  return true;
+}
+
+__attribute__((noinline)) void expect_3(int* shared, bool /*unused*/) {
+  assert(*shared == 3);
+}
+
+int main(int, char**) {
+  int shared = 0;
+
+  // Without trivial-abi, the unique_ptr is deleted at the end of this
+  // statement, expect_3 will see shared == 0 because it's not incremented (in
+  // ~Node()) until the end of this statement.
+  //
+  // With trivial-abi, shared_val is incremented 3 times before get_val returns
+  // because ~Node() was called 3 times.
+  expect_3(&shared, get_val(std::unique_ptr<Node[]>(new Node[3]{
+                        Node(&shared), Node(&shared), Node(&shared)})));
+
+  // Check that shared_value is still 3 (ie., ~Node() isn't called again by the end of the full-expression above)
+  expect_3(&shared, true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_destruction_order.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_destruction_order.pass.cpp
new file mode 100644
index 0000000..4e92a7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_destruction_order.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Test arguments destruction order involving unique_ptr<T> with trivial_abi.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI
+
+// XFAIL: gcc
+
+#include <memory>
+#include <cassert>
+
+__attribute__((noinline)) void call_something() { asm volatile(""); }
+
+struct Base {
+  char* shared_buff;
+  int* cur_idx;
+  const char id;
+
+  explicit Base(char* buf, int* idx, char ch)
+      : shared_buff(buf), cur_idx(idx), id(ch) {}
+  ~Base() { shared_buff[(*cur_idx)++] = id; }
+};
+
+struct A : Base {
+  explicit A(char* buf, int* idx) : Base(buf, idx, 'A') {}
+};
+
+struct B : Base {
+  explicit B(char* buf, int* idx) : Base(buf, idx, 'B') {}
+};
+
+struct C : Base {
+  explicit C(char* buf, int* idx) : Base(buf, idx, 'C') {}
+};
+
+__attribute__((noinline)) void func(A /*unused*/, std::unique_ptr<B> /*unused*/,
+                                    C /*unused*/) {
+  call_something();
+}
+
+int main(int, char**) {
+  char shared_buf[3] = {'0', '0', '0'};
+  int cur_idx = 0;
+
+  func(A(shared_buf, &cur_idx), std::unique_ptr<B>(new B(shared_buf, &cur_idx)),
+       C(shared_buf, &cur_idx));
+
+#if defined(_LIBCPP_ABI_MICROSOFT)
+  // On Microsoft ABI, the dtor order is always A,B,C (because callee-destroyed)
+  assert(shared_buf[0] == 'A' && shared_buf[1] == 'B' && shared_buf[2] == 'C');
+#else
+  // With trivial_abi, the std::unique_ptr<B> arg is always destructed first.
+  assert(shared_buf[0] == 'B');
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_ret.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_ret.pass.cpp
new file mode 100644
index 0000000..ef7325e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/unique_ptr_ret.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Test unique_ptr<T> with trivial_abi as return-type.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_ENABLE_UNIQUE_PTR_TRIVIAL_ABI
+
+// XFAIL: gcc
+
+#include <memory>
+#include <cassert>
+
+__attribute__((noinline)) void call_something() { asm volatile(""); }
+
+struct Node {
+  explicit Node() {}
+  ~Node() {}
+};
+
+__attribute__((noinline)) std::unique_ptr<Node> make_val(void** local_addr) {
+  call_something();
+
+  auto ret = std::unique_ptr<Node>(new Node);
+
+  // Capture the local address of ret.
+  *local_addr = &ret;
+
+  return ret;
+}
+
+int main(int, char**) {
+  void* local_addr = nullptr;
+  auto ret = make_val(&local_addr);
+  assert(local_addr != nullptr);
+
+  // Without trivial_abi, &ret == local_addr because the return value
+  // is allocated here in main's stackframe.
+  //
+  // With trivial_abi, local_addr is the address of a local variable in
+  // make_val, and hence different from &ret.
+#if !defined(__i386__) && !defined(_WIN32) && !defined(_AIX)
+  // On X86, structs are never returned in registers.
+  // On AIX, structs are never returned in registers.
+  // Thus, unique_ptr will be passed indirectly even if it is trivial.
+  // On Windows, structs with a destructor are always returned indirectly.
+  assert((void*)&ret != local_addr);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/weak_ptr_ret.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/weak_ptr_ret.pass.cpp
new file mode 100644
index 0000000..0d41c91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/trivial_abi/weak_ptr_ret.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Test weak_ptr<T> with trivial_abi as return-type.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined -D_LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI
+
+// XFAIL: gcc
+
+#include <memory>
+#include <cassert>
+
+__attribute__((noinline)) void call_something() { asm volatile(""); }
+
+struct Node {
+  explicit Node() {}
+  ~Node() {}
+};
+
+__attribute__((noinline)) std::weak_ptr<Node>
+make_val(std::shared_ptr<Node>& sptr, void** local_addr) {
+  call_something();
+
+  std::weak_ptr<Node> ret;
+  ret = sptr;
+
+  // Capture the local address of ret.
+  *local_addr = &ret;
+
+  return ret;
+}
+
+int main(int, char**) {
+  void* local_addr = nullptr;
+  auto sptr = std::make_shared<Node>();
+  std::weak_ptr<Node> ret = make_val(sptr, &local_addr);
+  assert(local_addr != nullptr);
+
+  // Without trivial_abi, &ret == local_addr because the return value
+  // is allocated here in main's stackframe.
+  //
+  // With trivial_abi, local_addr is the address of a local variable in
+  // make_val, and hence different from &ret.
+#if !defined(__i386__) && !defined(__arm__) && !defined(_WIN32) && !defined(_AIX)
+  // On X86, structs are never returned in registers.
+  // On AIX, structs are never returned in registers.
+  // On ARM32, structs larger than 4 bytes cannot be returned in registers.
+  // On Windows, structs with a destructor are always returned indirectly.
+  // Thus, weak_ptr will be passed indirectly even if it is trivial.
+  assert((void*)&ret != local_addr);
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/memory/uninitialized_allocator_copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/memory/uninitialized_allocator_copy.pass.cpp
new file mode 100644
index 0000000..679ee86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/memory/uninitialized_allocator_copy.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// ensure that __uninitialized_allocator_copy calls the proper construct and destruct functions
+
+#include <algorithm>
+#include <iterator>
+#include <memory>
+
+#include "test_allocator.h"
+
+template <class T>
+class construct_counting_allocator {
+public:
+  using value_type = T;
+
+  int* constructed_count_;
+  int* max_constructed_count_;
+
+  construct_counting_allocator(int* constructed_count, int* max_constructed_count)
+      : constructed_count_(constructed_count), max_constructed_count_(max_constructed_count) {}
+
+  template <class... Args>
+  void construct(T* ptr, Args&&... args) {
+    ::new (static_cast<void*>(ptr)) T(args...);
+    ++*constructed_count_;
+    *max_constructed_count_ = std::max(*max_constructed_count_, *constructed_count_);
+  }
+
+  void destroy(T* ptr) {
+    --*constructed_count_;
+    ptr->~T();
+  }
+};
+
+int throw_if_zero = 15;
+
+struct ThrowSometimes {
+  ThrowSometimes() = default;
+  ThrowSometimes(const ThrowSometimes&) {
+    if (--throw_if_zero == 0)
+      throw 1;
+  }
+};
+
+int main(int, char**) {
+  int constructed_count     = 0;
+  int max_constructed_count = 0;
+  construct_counting_allocator<ThrowSometimes> alloc(&constructed_count, &max_constructed_count);
+  ThrowSometimes in[20];
+  TEST_ALIGNAS_TYPE(ThrowSometimes) char out[sizeof(ThrowSometimes) * 20];
+  try {
+    std::__uninitialized_allocator_copy(
+        alloc, std::begin(in), std::end(in), reinterpret_cast<ThrowSometimes*>(std::begin(out)));
+  } catch (...) {
+  }
+
+  assert(constructed_count == 0);
+  assert(max_constructed_count == 14);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/min_max_macros.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/min_max_macros.compile.pass.cpp
new file mode 100644
index 0000000..0d9170b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/min_max_macros.compile.pass.cpp
@@ -0,0 +1,420 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that headers are not tripped up by the surrounding code defining the
+// min() and max() macros.
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+#define TEST_MACROS() static_assert(min() == true && max() == true, "")
+#define min() true
+#define max() true
+
+/*
+BEGIN-SCRIPT
+
+for header in public_headers:
+  print("{}#{}include <{}>\nTEST_MACROS();{}".format(
+    '#if ' + header_restrictions[header] + '\n' if header in header_restrictions else '',
+    3 * ' ' if header in header_restrictions else '',
+    header,
+    '\n#endif' if header in header_restrictions else ''
+  ))
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+#include <algorithm>
+TEST_MACROS();
+#include <any>
+TEST_MACROS();
+#include <array>
+TEST_MACROS();
+#include <atomic>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <barrier>
+TEST_MACROS();
+#endif
+#include <bit>
+TEST_MACROS();
+#include <bitset>
+TEST_MACROS();
+#include <cassert>
+TEST_MACROS();
+#include <ccomplex>
+TEST_MACROS();
+#include <cctype>
+TEST_MACROS();
+#include <cerrno>
+TEST_MACROS();
+#include <cfenv>
+TEST_MACROS();
+#include <cfloat>
+TEST_MACROS();
+#include <charconv>
+TEST_MACROS();
+#include <chrono>
+TEST_MACROS();
+#include <cinttypes>
+TEST_MACROS();
+#include <ciso646>
+TEST_MACROS();
+#include <climits>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <clocale>
+TEST_MACROS();
+#endif
+#include <cmath>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <codecvt>
+TEST_MACROS();
+#endif
+#include <compare>
+TEST_MACROS();
+#include <complex>
+TEST_MACROS();
+#include <complex.h>
+TEST_MACROS();
+#include <concepts>
+TEST_MACROS();
+#include <condition_variable>
+TEST_MACROS();
+#if (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#   include <coroutine>
+TEST_MACROS();
+#endif
+#include <csetjmp>
+TEST_MACROS();
+#include <csignal>
+TEST_MACROS();
+#include <cstdarg>
+TEST_MACROS();
+#include <cstdbool>
+TEST_MACROS();
+#include <cstddef>
+TEST_MACROS();
+#include <cstdint>
+TEST_MACROS();
+#include <cstdio>
+TEST_MACROS();
+#include <cstdlib>
+TEST_MACROS();
+#include <cstring>
+TEST_MACROS();
+#include <ctgmath>
+TEST_MACROS();
+#include <ctime>
+TEST_MACROS();
+#include <ctype.h>
+TEST_MACROS();
+#include <cuchar>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwchar>
+TEST_MACROS();
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwctype>
+TEST_MACROS();
+#endif
+#include <deque>
+TEST_MACROS();
+#include <errno.h>
+TEST_MACROS();
+#include <exception>
+TEST_MACROS();
+#include <execution>
+TEST_MACROS();
+#include <expected>
+TEST_MACROS();
+#include <fenv.h>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#   include <filesystem>
+TEST_MACROS();
+#endif
+#include <float.h>
+TEST_MACROS();
+#include <format>
+TEST_MACROS();
+#include <forward_list>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#   include <fstream>
+TEST_MACROS();
+#endif
+#include <functional>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <future>
+TEST_MACROS();
+#endif
+#include <initializer_list>
+TEST_MACROS();
+#include <inttypes.h>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iomanip>
+TEST_MACROS();
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ios>
+TEST_MACROS();
+#endif
+#include <iosfwd>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iostream>
+TEST_MACROS();
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <istream>
+TEST_MACROS();
+#endif
+#include <iterator>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <latch>
+TEST_MACROS();
+#endif
+#include <limits>
+TEST_MACROS();
+#include <limits.h>
+TEST_MACROS();
+#include <list>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale>
+TEST_MACROS();
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale.h>
+TEST_MACROS();
+#endif
+#include <map>
+TEST_MACROS();
+#include <math.h>
+TEST_MACROS();
+#include <memory>
+TEST_MACROS();
+#include <memory_resource>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <mutex>
+TEST_MACROS();
+#endif
+#include <new>
+TEST_MACROS();
+#include <numbers>
+TEST_MACROS();
+#include <numeric>
+TEST_MACROS();
+#include <optional>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ostream>
+TEST_MACROS();
+#endif
+#include <queue>
+TEST_MACROS();
+#include <random>
+TEST_MACROS();
+#include <ranges>
+TEST_MACROS();
+#include <ratio>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <regex>
+TEST_MACROS();
+#endif
+#include <scoped_allocator>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <semaphore>
+TEST_MACROS();
+#endif
+#include <set>
+TEST_MACROS();
+#include <setjmp.h>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <shared_mutex>
+TEST_MACROS();
+#endif
+#include <source_location>
+TEST_MACROS();
+#include <span>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <sstream>
+TEST_MACROS();
+#endif
+#include <stack>
+TEST_MACROS();
+#if __cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <stdatomic.h>
+TEST_MACROS();
+#endif
+#include <stdbool.h>
+TEST_MACROS();
+#include <stddef.h>
+TEST_MACROS();
+#include <stdexcept>
+TEST_MACROS();
+#include <stdint.h>
+TEST_MACROS();
+#include <stdio.h>
+TEST_MACROS();
+#include <stdlib.h>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <streambuf>
+TEST_MACROS();
+#endif
+#include <string>
+TEST_MACROS();
+#include <string.h>
+TEST_MACROS();
+#include <string_view>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <strstream>
+TEST_MACROS();
+#endif
+#include <system_error>
+TEST_MACROS();
+#include <tgmath.h>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <thread>
+TEST_MACROS();
+#endif
+#include <tuple>
+TEST_MACROS();
+#include <type_traits>
+TEST_MACROS();
+#include <typeindex>
+TEST_MACROS();
+#include <typeinfo>
+TEST_MACROS();
+#include <uchar.h>
+TEST_MACROS();
+#include <unordered_map>
+TEST_MACROS();
+#include <unordered_set>
+TEST_MACROS();
+#include <utility>
+TEST_MACROS();
+#include <valarray>
+TEST_MACROS();
+#include <variant>
+TEST_MACROS();
+#include <vector>
+TEST_MACROS();
+#include <version>
+TEST_MACROS();
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wchar.h>
+TEST_MACROS();
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wctype.h>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/algorithm>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#   include <experimental/coroutine>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/deque>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/forward_list>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/functional>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/iterator>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/list>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/map>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/memory_resource>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/propagate_const>
+TEST_MACROS();
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#   include <experimental/regex>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/set>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/simd>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/string>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/type_traits>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_map>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_set>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/utility>
+TEST_MACROS();
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/vector>
+TEST_MACROS();
+#endif
+#include <ext/hash_map>
+TEST_MACROS();
+#include <ext/hash_set>
+TEST_MACROS();
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/minimal_cxx11_configuration.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/minimal_cxx11_configuration.pass.cpp
new file mode 100644
index 0000000..e0811e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/minimal_cxx11_configuration.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test the set of C++11 features that Clang provides as an extension in C++03 mode.
+// The language features we expect are:
+//
+// 1. rvalue references (and perfect forwarding)
+// 2. variadic templates
+// 3. alias templates
+// 4. defaulted and deleted functions.
+// 5. default values for non-type template parameters.
+//
+// Some features we don't get and can't be used in extended C++03 mode:
+//
+// 1. noexcept and constexpr
+// 2. Two closing '>' without a space.
+
+#include <type_traits>
+#include <cassert>
+
+// Equals delete and default are allowed in minimal C++03 mode.
+namespace test_eq_delete_and_default {
+void t1() = delete;
+struct T2 {
+  T2() = default;
+  T2(T2 const&) = delete;
+};
+}
+
+namespace alias_templates {
+template <class T>
+using X = T;
+static_assert((std::is_same<X<int>, int>::value), "");
+}
+
+namespace variadics_templates {
+template <class ...Args>
+int t1(Args...) {
+  return sizeof...(Args);
+}
+void test() {
+  assert(t1() == 0);
+  assert(t1(42) == 1);
+  assert(t1(1, 2, 3) == 3);
+}
+}
+
+namespace rvalue_references_move_semantics {
+struct T {
+  T() : moved(0) {}
+  T(T const& other) : moved(other.moved) {}
+  T(T&& other) : moved(other.moved) { ++moved; other.moved = -1; }
+  int moved;
+};
+void f(T o, int expect_moved) { assert(o.moved == expect_moved); }
+void test() {
+  {
+    T t;
+    assert(t.moved == 0);
+    T t2(static_cast<T&&>(t));
+    assert(t2.moved == 1);
+    assert(t.moved == -1);
+  }
+  {
+    T t;
+    f(t, 0);
+    f(static_cast<T&&>(t), 1);
+  }
+}
+}
+
+namespace rvalue_references_perfect_forwarding {
+template <class Expect, class T>
+void f(T&&) {
+  static_assert((std::is_same<Expect, T&&>::value), "");
+}
+void test() {
+  int x = 42;
+  f<int&>(x);
+  f<int&&>(42);
+  f<int&&>(static_cast<int&&>(x));
+}
+}
+
+namespace default_values_for_nttp {
+template <int I = 42>
+void f() { assert(I == 42); }
+void test() {
+  f();
+}
+}
+
+namespace reference_qualified_functions {
+struct T {
+  T() : lvalue_called(0), rvalue_called(0) {}
+  void foo() const & { lvalue_called++; }
+  void foo() && { rvalue_called++; }
+  mutable int lvalue_called;
+  int rvalue_called;
+};
+
+void test() {
+  {
+    T t;
+    t.foo();
+    assert(t.lvalue_called == 1);
+    assert(t.rvalue_called == 0);
+  }
+  {
+    T t;
+    static_cast<T&&>(t).foo();
+    assert(t.lvalue_called == 0);
+    assert(t.rvalue_called == 1);
+  }
+}
+}
+
+int main(int, char**) {
+  variadics_templates::test();
+  rvalue_references_move_semantics::test();
+  rvalue_references_perfect_forwarding::test();
+  default_values_for_nttp::test();
+  reference_qualified_functions::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/modules_include.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/modules_include.sh.cpp
new file mode 100644
index 0000000..a45d3d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/modules_include.sh.cpp
@@ -0,0 +1,626 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that we can include each header in a TU while using modules.
+// This is important notably because the LLDB data formatters use
+// libc++ headers with modules enabled.
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// GCC doesn't support -fcxx-modules
+// UNSUPPORTED: gcc
+
+// The Windows headers don't appear to be compatible with modules
+// UNSUPPORTED: windows
+
+// The Android headers don't appear to be compatible with modules yet
+// XFAIL: LIBCXX-ANDROID-FIXME
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+#include <__config>
+
+/*
+BEGIN-SCRIPT
+
+for i, header in enumerate(public_headers):
+  print("// {}: %{{cxx}} %s %{{flags}} %{{compile_flags}} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_{}".format('RUN', i))
+  if header in header_restrictions:
+    print("#if defined(TEST_{}) && {}".format(i, header_restrictions[header]))
+  else:
+    print("#if defined(TEST_{})".format(i))
+  print("#include <{}>".format(header))
+  print("#endif")
+
+END-SCRIPT
+*/
+
+// RUN: rm -rf %t
+// RUN: mkdir %t
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_0
+#if defined(TEST_0)
+#include <algorithm>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_1
+#if defined(TEST_1)
+#include <any>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_2
+#if defined(TEST_2)
+#include <array>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_3
+#if defined(TEST_3)
+#include <atomic>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_4
+#if defined(TEST_4) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <barrier>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_5
+#if defined(TEST_5)
+#include <bit>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_6
+#if defined(TEST_6)
+#include <bitset>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_7
+#if defined(TEST_7)
+#include <cassert>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_8
+#if defined(TEST_8)
+#include <ccomplex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_9
+#if defined(TEST_9)
+#include <cctype>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_10
+#if defined(TEST_10)
+#include <cerrno>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_11
+#if defined(TEST_11)
+#include <cfenv>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_12
+#if defined(TEST_12)
+#include <cfloat>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_13
+#if defined(TEST_13)
+#include <charconv>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_14
+#if defined(TEST_14)
+#include <chrono>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_15
+#if defined(TEST_15)
+#include <cinttypes>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_16
+#if defined(TEST_16)
+#include <ciso646>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_17
+#if defined(TEST_17)
+#include <climits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_18
+#if defined(TEST_18) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <clocale>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_19
+#if defined(TEST_19)
+#include <cmath>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_20
+#if defined(TEST_20) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <codecvt>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_21
+#if defined(TEST_21)
+#include <compare>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_22
+#if defined(TEST_22)
+#include <complex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_23
+#if defined(TEST_23)
+#include <complex.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_24
+#if defined(TEST_24)
+#include <concepts>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_25
+#if defined(TEST_25)
+#include <condition_variable>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_26
+#if defined(TEST_26) && (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#include <coroutine>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_27
+#if defined(TEST_27)
+#include <csetjmp>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_28
+#if defined(TEST_28)
+#include <csignal>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_29
+#if defined(TEST_29)
+#include <cstdarg>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_30
+#if defined(TEST_30)
+#include <cstdbool>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_31
+#if defined(TEST_31)
+#include <cstddef>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_32
+#if defined(TEST_32)
+#include <cstdint>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_33
+#if defined(TEST_33)
+#include <cstdio>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_34
+#if defined(TEST_34)
+#include <cstdlib>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_35
+#if defined(TEST_35)
+#include <cstring>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_36
+#if defined(TEST_36)
+#include <ctgmath>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_37
+#if defined(TEST_37)
+#include <ctime>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_38
+#if defined(TEST_38)
+#include <ctype.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_39
+#if defined(TEST_39)
+#include <cuchar>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_40
+#if defined(TEST_40) && !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#include <cwchar>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_41
+#if defined(TEST_41) && !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#include <cwctype>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_42
+#if defined(TEST_42)
+#include <deque>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_43
+#if defined(TEST_43)
+#include <errno.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_44
+#if defined(TEST_44)
+#include <exception>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_45
+#if defined(TEST_45)
+#include <execution>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_46
+#if defined(TEST_46)
+#include <expected>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_47
+#if defined(TEST_47)
+#include <fenv.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_48
+#if defined(TEST_48) && !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#include <filesystem>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_49
+#if defined(TEST_49)
+#include <float.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_50
+#if defined(TEST_50)
+#include <format>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_51
+#if defined(TEST_51)
+#include <forward_list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_52
+#if defined(TEST_52) && !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#include <fstream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_53
+#if defined(TEST_53)
+#include <functional>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_54
+#if defined(TEST_54) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <future>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_55
+#if defined(TEST_55)
+#include <initializer_list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_56
+#if defined(TEST_56)
+#include <inttypes.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_57
+#if defined(TEST_57) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <iomanip>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_58
+#if defined(TEST_58) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <ios>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_59
+#if defined(TEST_59)
+#include <iosfwd>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_60
+#if defined(TEST_60) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <iostream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_61
+#if defined(TEST_61) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <istream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_62
+#if defined(TEST_62)
+#include <iterator>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_63
+#if defined(TEST_63) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <latch>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_64
+#if defined(TEST_64)
+#include <limits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_65
+#if defined(TEST_65)
+#include <limits.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_66
+#if defined(TEST_66)
+#include <list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_67
+#if defined(TEST_67) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <locale>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_68
+#if defined(TEST_68) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <locale.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_69
+#if defined(TEST_69)
+#include <map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_70
+#if defined(TEST_70)
+#include <math.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_71
+#if defined(TEST_71)
+#include <memory>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_72
+#if defined(TEST_72)
+#include <memory_resource>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_73
+#if defined(TEST_73) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <mutex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_74
+#if defined(TEST_74)
+#include <new>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_75
+#if defined(TEST_75)
+#include <numbers>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_76
+#if defined(TEST_76)
+#include <numeric>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_77
+#if defined(TEST_77)
+#include <optional>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_78
+#if defined(TEST_78) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <ostream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_79
+#if defined(TEST_79)
+#include <queue>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_80
+#if defined(TEST_80)
+#include <random>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_81
+#if defined(TEST_81)
+#include <ranges>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_82
+#if defined(TEST_82)
+#include <ratio>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_83
+#if defined(TEST_83) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <regex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_84
+#if defined(TEST_84)
+#include <scoped_allocator>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_85
+#if defined(TEST_85) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <semaphore>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_86
+#if defined(TEST_86)
+#include <set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_87
+#if defined(TEST_87)
+#include <setjmp.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_88
+#if defined(TEST_88) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <shared_mutex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_89
+#if defined(TEST_89)
+#include <source_location>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_90
+#if defined(TEST_90)
+#include <span>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_91
+#if defined(TEST_91) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <sstream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_92
+#if defined(TEST_92)
+#include <stack>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_93
+#if defined(TEST_93) && __cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <stdatomic.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_94
+#if defined(TEST_94)
+#include <stdbool.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_95
+#if defined(TEST_95)
+#include <stddef.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_96
+#if defined(TEST_96)
+#include <stdexcept>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_97
+#if defined(TEST_97)
+#include <stdint.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_98
+#if defined(TEST_98)
+#include <stdio.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_99
+#if defined(TEST_99)
+#include <stdlib.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_100
+#if defined(TEST_100) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <streambuf>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_101
+#if defined(TEST_101)
+#include <string>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_102
+#if defined(TEST_102)
+#include <string.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_103
+#if defined(TEST_103)
+#include <string_view>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_104
+#if defined(TEST_104) && !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#include <strstream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_105
+#if defined(TEST_105)
+#include <system_error>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_106
+#if defined(TEST_106)
+#include <tgmath.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_107
+#if defined(TEST_107) && !defined(_LIBCPP_HAS_NO_THREADS)
+#include <thread>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_108
+#if defined(TEST_108)
+#include <tuple>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_109
+#if defined(TEST_109)
+#include <type_traits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_110
+#if defined(TEST_110)
+#include <typeindex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_111
+#if defined(TEST_111)
+#include <typeinfo>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_112
+#if defined(TEST_112)
+#include <uchar.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_113
+#if defined(TEST_113)
+#include <unordered_map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_114
+#if defined(TEST_114)
+#include <unordered_set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_115
+#if defined(TEST_115)
+#include <utility>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_116
+#if defined(TEST_116)
+#include <valarray>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_117
+#if defined(TEST_117)
+#include <variant>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_118
+#if defined(TEST_118)
+#include <vector>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_119
+#if defined(TEST_119)
+#include <version>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_120
+#if defined(TEST_120) && !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#include <wchar.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_121
+#if defined(TEST_121) && !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#include <wctype.h>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_122
+#if defined(TEST_122) && __cplusplus >= 201103L
+#include <experimental/algorithm>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_123
+#if defined(TEST_123) && __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#include <experimental/coroutine>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_124
+#if defined(TEST_124) && __cplusplus >= 201103L
+#include <experimental/deque>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_125
+#if defined(TEST_125) && __cplusplus >= 201103L
+#include <experimental/forward_list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_126
+#if defined(TEST_126) && __cplusplus >= 201103L
+#include <experimental/functional>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_127
+#if defined(TEST_127) && __cplusplus >= 201103L
+#include <experimental/iterator>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_128
+#if defined(TEST_128) && __cplusplus >= 201103L
+#include <experimental/list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_129
+#if defined(TEST_129) && __cplusplus >= 201103L
+#include <experimental/map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_130
+#if defined(TEST_130) && __cplusplus >= 201103L
+#include <experimental/memory_resource>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_131
+#if defined(TEST_131) && __cplusplus >= 201103L
+#include <experimental/propagate_const>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_132
+#if defined(TEST_132) && !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#include <experimental/regex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_133
+#if defined(TEST_133) && __cplusplus >= 201103L
+#include <experimental/set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_134
+#if defined(TEST_134) && __cplusplus >= 201103L
+#include <experimental/simd>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_135
+#if defined(TEST_135) && __cplusplus >= 201103L
+#include <experimental/string>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_136
+#if defined(TEST_136) && __cplusplus >= 201103L
+#include <experimental/type_traits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_137
+#if defined(TEST_137) && __cplusplus >= 201103L
+#include <experimental/unordered_map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_138
+#if defined(TEST_138) && __cplusplus >= 201103L
+#include <experimental/unordered_set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_139
+#if defined(TEST_139) && __cplusplus >= 201103L
+#include <experimental/utility>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_140
+#if defined(TEST_140) && __cplusplus >= 201103L
+#include <experimental/vector>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_141
+#if defined(TEST_141)
+#include <ext/hash_map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} -fmodules -fcxx-modules -fmodules-cache-path=%t -fsyntax-only -DTEST_142
+#if defined(TEST_142)
+#include <ext/hash_set>
+#endif
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/nasty_macros.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/nasty_macros.compile.pass.cpp
new file mode 100644
index 0000000..7896b5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/nasty_macros.compile.pass.cpp
@@ -0,0 +1,401 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that headers are not tripped up by the surrounding code defining various
+// alphabetic macros.
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+#define NASTY_MACRO This should not be expanded!!!
+
+// libc++ does not use single-letter names as a matter of principle.
+// But Windows' own <wchar.h>, <math.h>, and <exception> use many of these
+// (at least C,E,F,I,M,N,P,S,X,Y,Z) as uglified function parameter names,
+// so don't define these on Windows.
+//
+#ifndef _WIN32
+#define _A NASTY_MACRO
+#define _B NASTY_MACRO
+#define _C NASTY_MACRO
+#define _D NASTY_MACRO
+#define _E NASTY_MACRO
+#define _F NASTY_MACRO
+#define _G NASTY_MACRO
+#define _H NASTY_MACRO
+#define _I NASTY_MACRO
+#define _J NASTY_MACRO
+#define _K NASTY_MACRO
+#define _L NASTY_MACRO
+#define _M NASTY_MACRO
+#define _N NASTY_MACRO
+#define _O NASTY_MACRO
+#define _P NASTY_MACRO
+#define _Q NASTY_MACRO
+#define _R NASTY_MACRO
+#define _S NASTY_MACRO
+#define _T NASTY_MACRO
+#define _U NASTY_MACRO
+#define _V NASTY_MACRO
+#define _W NASTY_MACRO
+#define _X NASTY_MACRO
+#define _Y NASTY_MACRO
+#define _Z NASTY_MACRO
+#endif
+
+// FreeBSD's <sys/types.h> uses _M
+//
+#ifdef __FreeBSD__
+# undef _M
+#endif
+
+// Test that libc++ doesn't use names that collide with FreeBSD system macros.
+#ifndef __FreeBSD__
+#  define __null_sentinel NASTY_MACRO
+#endif
+
+// tchar.h defines these macros on Windows
+#ifndef _WIN32
+# define _UI   NASTY_MACRO
+# define _PUC  NASTY_MACRO
+# define _CPUC NASTY_MACRO
+# define _PC   NASTY_MACRO
+# define _CRPC NASTY_MACRO
+# define _CPC  NASTY_MACRO
+#endif
+
+// yvals.h on MINGW defines this macro
+#ifndef _WIN32
+# define _C2 NASTY_MACRO
+#endif
+
+// Test that libc++ doesn't use names that collide with Win32 API macros.
+// Obviously we can only define these on non-Windows platforms.
+#ifndef _WIN32
+# define __allocator NASTY_MACRO
+# define __bound NASTY_MACRO
+# define __deallocate NASTY_MACRO
+# define __deref NASTY_MACRO
+# define __format_string NASTY_MACRO
+# define __full NASTY_MACRO
+# define __in NASTY_MACRO
+# define __inout NASTY_MACRO
+# define __nz NASTY_MACRO
+# define __out NASTY_MACRO
+# define __part NASTY_MACRO
+# define __post NASTY_MACRO
+# define __pre NASTY_MACRO
+#endif
+
+#define __input NASTY_MACRO
+#define __output NASTY_MACRO
+
+#define __acquire NASTY_MACRO
+#define __release NASTY_MACRO
+
+// These names are not reserved, so the user can macro-define them.
+// These are intended to find improperly _Uglified template parameters.
+#define A NASTY_MACRO
+#define Arg NASTY_MACRO
+#define Args NASTY_MACRO
+#define As NASTY_MACRO
+#define B NASTY_MACRO
+#define Bs NASTY_MACRO
+#define C NASTY_MACRO
+#define Cp NASTY_MACRO
+#define Cs NASTY_MACRO
+// Windows setjmp.h contains a struct member named 'D' on ARM/AArch64.
+#ifndef _WIN32
+# define D NASTY_MACRO
+#endif
+#define Dp NASTY_MACRO
+#define Ds NASTY_MACRO
+#define E NASTY_MACRO
+#define Ep NASTY_MACRO
+#define Es NASTY_MACRO
+#define R NASTY_MACRO
+#define Rp NASTY_MACRO
+#define Rs NASTY_MACRO
+#define T NASTY_MACRO
+#define Tp NASTY_MACRO
+#define Ts NASTY_MACRO
+#define Type NASTY_MACRO
+#define Types NASTY_MACRO
+#define U NASTY_MACRO
+#define Up NASTY_MACRO
+#define Us NASTY_MACRO
+#define V NASTY_MACRO
+#define Vp NASTY_MACRO
+#define Vs NASTY_MACRO
+#define X NASTY_MACRO
+#define Xp NASTY_MACRO
+#define Xs NASTY_MACRO
+
+// The classic Windows min/max macros
+#define min NASTY_MACRO
+#define max NASTY_MACRO
+
+/*
+BEGIN-SCRIPT
+
+for header in public_headers:
+  print("{}#{}include <{}>{}".format(
+    '#if ' + header_restrictions[header] + '\n' if header in header_restrictions else '',
+    3 * ' ' if header in header_restrictions else '',
+    header,
+    '\n#endif' if header in header_restrictions else ''
+  ))
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+#include <algorithm>
+#include <any>
+#include <array>
+#include <atomic>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <barrier>
+#endif
+#include <bit>
+#include <bitset>
+#include <cassert>
+#include <ccomplex>
+#include <cctype>
+#include <cerrno>
+#include <cfenv>
+#include <cfloat>
+#include <charconv>
+#include <chrono>
+#include <cinttypes>
+#include <ciso646>
+#include <climits>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <clocale>
+#endif
+#include <cmath>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <codecvt>
+#endif
+#include <compare>
+#include <complex>
+#include <complex.h>
+#include <concepts>
+#include <condition_variable>
+#if (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#   include <coroutine>
+#endif
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstdbool>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctgmath>
+#include <ctime>
+#include <ctype.h>
+#include <cuchar>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwchar>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwctype>
+#endif
+#include <deque>
+#include <errno.h>
+#include <exception>
+#include <execution>
+#include <expected>
+#include <fenv.h>
+#if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#   include <filesystem>
+#endif
+#include <float.h>
+#include <format>
+#include <forward_list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#   include <fstream>
+#endif
+#include <functional>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <future>
+#endif
+#include <initializer_list>
+#include <inttypes.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iomanip>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ios>
+#endif
+#include <iosfwd>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iostream>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <istream>
+#endif
+#include <iterator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <latch>
+#endif
+#include <limits>
+#include <limits.h>
+#include <list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale.h>
+#endif
+#include <map>
+#include <math.h>
+#include <memory>
+#include <memory_resource>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <mutex>
+#endif
+#include <new>
+#include <numbers>
+#include <numeric>
+#include <optional>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ostream>
+#endif
+#include <queue>
+#include <random>
+#include <ranges>
+#include <ratio>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <regex>
+#endif
+#include <scoped_allocator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <semaphore>
+#endif
+#include <set>
+#include <setjmp.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <shared_mutex>
+#endif
+#include <source_location>
+#include <span>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <sstream>
+#endif
+#include <stack>
+#if __cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <stdatomic.h>
+#endif
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdexcept>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <streambuf>
+#endif
+#include <string>
+#include <string.h>
+#include <string_view>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <strstream>
+#endif
+#include <system_error>
+#include <tgmath.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <thread>
+#endif
+#include <tuple>
+#include <type_traits>
+#include <typeindex>
+#include <typeinfo>
+#include <uchar.h>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <valarray>
+#include <variant>
+#include <vector>
+#include <version>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wchar.h>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wctype.h>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/algorithm>
+#endif
+#if __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#   include <experimental/coroutine>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/deque>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/forward_list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/functional>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/iterator>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/memory_resource>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/propagate_const>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#   include <experimental/regex>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/simd>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/string>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/type_traits>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/utility>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/vector>
+#endif
+#include <ext/hash_map>
+#include <ext/hash_set>
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/no_assert_include.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/no_assert_include.compile.pass.cpp
new file mode 100644
index 0000000..ce94592
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/no_assert_include.compile.pass.cpp
@@ -0,0 +1,278 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Ensure that none of the standard C++ headers implicitly include cassert or
+// assert.h (because assert() is implemented as a macro).
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+/*
+BEGIN-SCRIPT
+
+for header in public_headers:
+  if header == 'cassert':
+    continue
+  print("{}#{}include <{}>{}".format(
+    '#if ' + header_restrictions[header] + '\n' if header in header_restrictions else '',
+    3 * ' ' if header in header_restrictions else '',
+    header,
+    '\n#endif' if header in header_restrictions else ''
+  ))
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+#include <algorithm>
+#include <any>
+#include <array>
+#include <atomic>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <barrier>
+#endif
+#include <bit>
+#include <bitset>
+#include <ccomplex>
+#include <cctype>
+#include <cerrno>
+#include <cfenv>
+#include <cfloat>
+#include <charconv>
+#include <chrono>
+#include <cinttypes>
+#include <ciso646>
+#include <climits>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <clocale>
+#endif
+#include <cmath>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <codecvt>
+#endif
+#include <compare>
+#include <complex>
+#include <complex.h>
+#include <concepts>
+#include <condition_variable>
+#if (defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)
+#   include <coroutine>
+#endif
+#include <csetjmp>
+#include <csignal>
+#include <cstdarg>
+#include <cstdbool>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctgmath>
+#include <ctime>
+#include <ctype.h>
+#include <cuchar>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwchar>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <cwctype>
+#endif
+#include <deque>
+#include <errno.h>
+#include <exception>
+#include <execution>
+#include <expected>
+#include <fenv.h>
+#if !defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#   include <filesystem>
+#endif
+#include <float.h>
+#include <format>
+#include <forward_list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)
+#   include <fstream>
+#endif
+#include <functional>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <future>
+#endif
+#include <initializer_list>
+#include <inttypes.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iomanip>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ios>
+#endif
+#include <iosfwd>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <iostream>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <istream>
+#endif
+#include <iterator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <latch>
+#endif
+#include <limits>
+#include <limits.h>
+#include <list>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <locale.h>
+#endif
+#include <map>
+#include <math.h>
+#include <memory>
+#include <memory_resource>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <mutex>
+#endif
+#include <new>
+#include <numbers>
+#include <numeric>
+#include <optional>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <ostream>
+#endif
+#include <queue>
+#include <random>
+#include <ranges>
+#include <ratio>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <regex>
+#endif
+#include <scoped_allocator>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <semaphore>
+#endif
+#include <set>
+#include <setjmp.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <shared_mutex>
+#endif
+#include <source_location>
+#include <span>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <sstream>
+#endif
+#include <stack>
+#if __cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <stdatomic.h>
+#endif
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdexcept>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <streambuf>
+#endif
+#include <string>
+#include <string.h>
+#include <string_view>
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#   include <strstream>
+#endif
+#include <system_error>
+#include <tgmath.h>
+#if !defined(_LIBCPP_HAS_NO_THREADS)
+#   include <thread>
+#endif
+#include <tuple>
+#include <type_traits>
+#include <typeindex>
+#include <typeinfo>
+#include <uchar.h>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <valarray>
+#include <variant>
+#include <vector>
+#include <version>
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wchar.h>
+#endif
+#if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   include <wctype.h>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/algorithm>
+#endif
+#if __cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)
+#   include <experimental/coroutine>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/deque>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/forward_list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/functional>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/iterator>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/list>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/memory_resource>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/propagate_const>
+#endif
+#if !defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L
+#   include <experimental/regex>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/simd>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/string>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/type_traits>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_map>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/unordered_set>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/utility>
+#endif
+#if __cplusplus >= 201103L
+#   include <experimental/vector>
+#endif
+#include <ext/hash_map>
+#include <ext/hash_set>
+// GENERATED-MARKER
+
+#ifdef assert
+#error "Do not include cassert or assert.h in standard header files"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/bit.ops.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/bit.ops.pass.cpp
new file mode 100644
index 0000000..2a509db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/bit.ops.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// Test the __XXXX routines in the <bit> header.
+// These are not supposed to be exhaustive tests, just sanity checks.
+
+#include <bit>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool test() {
+  const unsigned v = 0x12345678;
+
+  ASSERT_SAME_TYPE(unsigned, decltype(std::__rotr(v, 3)));
+  ASSERT_SAME_TYPE(int, decltype(std::__countl_zero(v)));
+
+  assert(std::__rotr(v, 3) == 0x02468acfU);
+  assert(std::__countl_zero(v) == 3);
+
+#if TEST_STD_VER > 17
+  ASSERT_SAME_TYPE(unsigned, decltype(std::__bit_log2(v)));
+  assert(std::__bit_log2(v) == 28);
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 11
+  static_assert(test(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-cxx2b-clang.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-cxx2b-clang.pass.cpp
new file mode 100644
index 0000000..269c487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-cxx2b-clang.pass.cpp
@@ -0,0 +1,259 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that Clang supports constexpr <cmath> and <cstdlib> functions
+// mentioned in the P0533R9 paper that is part of C++2b
+// (https://wg21.link/p0533r9)
+//
+// Every function called in this test should become constexpr. Whenever some
+// of the desired function become constexpr, the programmer switches
+// `ASSERT_NOT_CONSTEXPR_CXX23` to `ASSERT_CONSTEXPR_CXX23` and eventually the
+// paper is implemented in Clang.
+// The test also works as a reference list of unimplemented functions.
+//
+// REQUIRES: clang
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// We don't control the implementation of these functions on windows
+// UNSUPPORTED: windows
+
+#include <cmath>
+#include <cstdlib>
+#include <cassert>
+
+int main(int, char**) {
+  bool ImplementedP0533R9 = true;
+
+#define ASSERT_CONSTEXPR_CXX23(Expr) static_assert(__builtin_constant_p(Expr) && (Expr))
+#define ASSERT_NOT_CONSTEXPR_CXX23(Expr)                                                                               \
+  static_assert(!__builtin_constant_p(Expr));                                                                          \
+  assert(Expr);                                                                                                        \
+  ImplementedP0533R9 = false
+
+  int DummyInt;
+  float DummyFloat;
+  double DummyDouble;
+  long double DummyLongDouble;
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1L) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1LL) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::labs(-1L) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llabs(-1LL) == 1LL);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::div(13, 5).rem == 3);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::div(13L, 5L).rem == 3L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::div(13LL, 5LL).rem == 3LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldiv(13L, 5L).rem == 3L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lldiv(13LL, 5LL).rem == 3LL);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexp(0.0f, &DummyInt) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexp(0.0, &DummyInt) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexp(0.0L, &DummyInt) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexpf(0.0f, &DummyInt) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexpl(0.0L, &DummyInt) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogb(1.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogb(1.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogb(1.0L) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogbf(1.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogbl(1.0L) == 0);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexp(1.0f, 1) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexp(1.0, 1) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexp(1.0L, 1) == 2.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexpf(1.0f, 1) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexpl(1.0L, 1) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logb(1.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logb(1.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logb(1.0L) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logbf(1.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logbl(1.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modf(1.0f, &DummyFloat) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modf(1.0, &DummyDouble) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modf(1.0L, &DummyLongDouble) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modff(1.0f, &DummyFloat) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modfl(1.0L, &DummyLongDouble) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbn(1.0f, 1) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbn(1.0, 1) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbn(1.0L, 1) == 2.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbnf(1.0f, 1) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbnl(1.0L, 1) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbln(1.0f, 1L) == 2);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbln(1.0, 1L) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbln(1.0L, 1L) == 2.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalblnf(1.0f, 1L) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalblnl(1.0L, 1L) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabs(-1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabs(-1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabs(-1.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabsf(-1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabsl(-1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceil(0.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceil(0.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceil(0.0L) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceilf(0.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceill(0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floor(1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floor(1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floor(1.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floorf(1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floorl(1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::round(1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::round(1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::round(1.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::roundf(1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::roundl(1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lround(1.0f) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lround(1.0) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lround(1.0L) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lroundf(1.0f) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lroundl(1.0L) == 1L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llround(1.0f) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llround(1.0) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llround(1.0L) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llroundf(1.0f) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llroundl(1.0L) == 1LL);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::trunc(1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::trunc(1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::trunc(1.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::truncf(1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::truncl(1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmod(1.5f, 1.0f) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmod(1.5, 1.0) == 0.5);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmod(1.5L, 1.0L) == 0.5L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmodf(1.5f, 1.0f) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmodl(1.5L, 1.0L) == 0.5L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainder(0.5f, 1.0f) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainder(0.5, 1.0) == 0.5);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainder(0.5L, 1.0L) == 0.5L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainderf(0.5f, 1.0f) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainderl(0.5L, 1.0L) == 0.5L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquo(0.5f, 1.0f, &DummyInt) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquo(0.5, 1.0, &DummyInt) == 0.5);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquo(0.5L, 1.0L, &DummyInt) == 0.5L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquof(0.5f, 1.0f, &DummyInt) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquol(0.5L, 1.0L, &DummyInt) == 0.5L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysign(1.0f, 1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysign(1.0, 1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysign(1.0L, 1.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysignf(1.0f, 1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysignl(1.0L, 1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafter(0.0f, 0.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafter(0.0, 0.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafter(0.0L, 0.0L) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafterf(0.0f, 0.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafterl(0.0L, 0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttoward(0.0f, 0.0L) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttoward(0.0, 0.0L) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttoward(0.0L, 0.0L) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttowardf(0.0f, 0.0L) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttowardl(0.0L, 0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdim(1.0f, 0.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdim(1.0, 0.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdim(1.0L, 0.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdimf(1.0f, 0.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdiml(1.0L, 0.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmax(1.0f, 0.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmax(1.0, 0.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmax(1.0L, 0.0L) == 1.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmaxf(1.0f, 0.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmaxl(1.0L, 0.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmin(1.0f, 0.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmin(1.0, 0.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmin(1.0L, 0.0L) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fminf(1.0f, 0.0f) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fminl(1.0L, 0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fma(1.0f, 1.0f, 1.0f) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fma(1.0, 1.0, 1.0) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fma(1.0L, 1.0L, 1.0L) == 2.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmaf(1.0f, 1.0f, 1.0f) == 2.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmal(1.0L, 1.0L, 1.0L) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fpclassify(-1.0f) == FP_NORMAL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fpclassify(-1.0) == FP_NORMAL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fpclassify(-1.0L) == FP_NORMAL);
+
+  ASSERT_CONSTEXPR_CXX23(std::isfinite(-1.0f) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isfinite(-1.0) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isfinite(-1.0L) == 1);
+
+  ASSERT_CONSTEXPR_CXX23(std::isinf(-1.0f) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isinf(-1.0) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isinf(-1.0L) == 0);
+
+  ASSERT_CONSTEXPR_CXX23(std::isnan(-1.0f) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isnan(-1.0) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isnan(-1.0L) == 0);
+
+  ASSERT_CONSTEXPR_CXX23(std::isnormal(-1.0f) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isnormal(-1.0) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isnormal(-1.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::signbit(-1.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::signbit(-1.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::signbit(-1.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreater(-1.0f, 0.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreater(-1.0, 0.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreater(-1.0L, 0.0L) == 0);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreaterequal(-1.0f, 0.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreaterequal(-1.0, 0.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreaterequal(-1.0L, 0.0L) == 0);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isless(-1.0f, 0.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isless(-1.0, 0.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isless(-1.0L, 0.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessequal(-1.0f, 0.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessequal(-1.0, 0.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessequal(-1.0L, 0.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessgreater(-1.0f, 0.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessgreater(-1.0, 0.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessgreater(-1.0L, 0.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isunordered(-1.0f, 0.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isunordered(-1.0, 0.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isunordered(-1.0L, 0.0L) == 0);
+
+  assert(!ImplementedP0533R9 && R"(
+Congratulations! You just have implemented P0533R9 (https://wg21.link/p0533r9).
+Please go to `clang/www/cxx_status.html` and change the paper's implementation
+status. Also please delete this assert and refactor `ASSERT_CONSTEXPR_CXX23`
+and `ASSERT_NOT_CONSTEXPR_CXX23`.
+)");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-cxx2b-gcc.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-cxx2b-gcc.pass.cpp
new file mode 100644
index 0000000..b4ff47a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-cxx2b-gcc.pass.cpp
@@ -0,0 +1,256 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that GCC supports constexpr <cmath> and <cstdlib> functions
+// mentioned in the P0533R9 paper that is part of C++2b
+// (https://wg21.link/p0533r9)
+//
+// Every function called in this test should become constexpr. Whenever some
+// of the desired function become constexpr, the programmer switches
+// `ASSERT_NOT_CONSTEXPR_CXX23` to `ASSERT_CONSTEXPR_CXX23` and eventually the
+// paper is implemented in Clang.
+// The test also works as a reference list of unimplemented functions.
+//
+// REQUIRES: gcc
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cmath>
+#include <cstdlib>
+#include <cassert>
+
+int main(int, char**) {
+  bool ImplementedP0533R9 = true;
+
+#define ASSERT_CONSTEXPR_CXX23(Expr) static_assert(__builtin_constant_p(Expr) && (Expr))
+#define ASSERT_NOT_CONSTEXPR_CXX23(Expr)                                                                               \
+  static_assert(!__builtin_constant_p(Expr));                                                                          \
+  assert(Expr);                                                                                                        \
+  ImplementedP0533R9 = false
+
+  int DummyInt;
+  float DummyFloat;
+  double DummyDouble;
+  long double DummyLongDouble;
+
+  ASSERT_CONSTEXPR_CXX23(std::abs(-1) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1L) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1LL) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1.0f) == 1.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::abs(-1.0L) == 1.0L);
+
+  ASSERT_CONSTEXPR_CXX23(std::labs(-1L) == 1L);
+  ASSERT_CONSTEXPR_CXX23(std::llabs(-1LL) == 1LL);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::div(13, 5).rem == 3);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::div(13L, 5L).rem == 3L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::div(13LL, 5LL).rem == 3LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldiv(13L, 5L).rem == 3L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lldiv(13LL, 5LL).rem == 3LL);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexp(0.0f, &DummyInt) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexp(0.0, &DummyInt) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexp(0.0L, &DummyInt) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexpf(0.0f, &DummyInt) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::frexpl(0.0L, &DummyInt) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogb(1.0f) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::ilogb(1.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ilogb(1.0L) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::ilogbf(1.0f) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::ilogbl(1.0L) == 0);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexp(1.0f, 1) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::ldexp(1.0, 1) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ldexp(1.0L, 1) == 2.0L);
+  ASSERT_CONSTEXPR_CXX23(std::ldexpf(1.0f, 1) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::ldexpl(1.0L, 1) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logb(1.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::logb(1.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::logb(1.0L) == 0.0L);
+  ASSERT_CONSTEXPR_CXX23(std::logbf(1.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::logbl(1.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modf(1.0f, &DummyFloat) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modf(1.0, &DummyDouble) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modf(1.0L, &DummyLongDouble) == 0.0L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modff(1.0f, &DummyFloat) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::modfl(1.0L, &DummyLongDouble) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbn(1.0f, 1) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::scalbn(1.0, 1) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbn(1.0L, 1) == 2.0L);
+  ASSERT_CONSTEXPR_CXX23(std::scalbnf(1.0f, 1) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::scalbnl(1.0L, 1) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbln(1.0f, 1L) == 2);
+  ASSERT_CONSTEXPR_CXX23(std::scalbln(1.0, 1L) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::scalbln(1.0L, 1L) == 2.0L);
+  ASSERT_CONSTEXPR_CXX23(std::scalblnf(1.0f, 1L) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::scalblnl(1.0L, 1L) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabs(-1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fabs(-1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fabs(-1.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::fabsf(-1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fabsl(-1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceil(0.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::ceil(0.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::ceil(0.0L) == 0.0L);
+  ASSERT_CONSTEXPR_CXX23(std::ceilf(0.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::ceill(0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floor(1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::floor(1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::floor(1.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::floorf(1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::floorl(1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::round(1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::round(1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::round(1.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::roundf(1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::roundl(1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lround(1.0f) == 1L);
+  ASSERT_CONSTEXPR_CXX23(std::lround(1.0) == 1L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::lround(1.0L) == 1L);
+  ASSERT_CONSTEXPR_CXX23(std::lroundf(1.0f) == 1L);
+  ASSERT_CONSTEXPR_CXX23(std::lroundl(1.0L) == 1L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llround(1.0f) == 1LL);
+  ASSERT_CONSTEXPR_CXX23(std::llround(1.0) == 1LL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::llround(1.0L) == 1LL);
+  ASSERT_CONSTEXPR_CXX23(std::llroundf(1.0f) == 1LL);
+  ASSERT_CONSTEXPR_CXX23(std::llroundl(1.0L) == 1LL);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::trunc(1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::trunc(1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::trunc(1.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::truncf(1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::truncl(1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmod(1.5f, 1.0f) == 0.5f);
+  ASSERT_CONSTEXPR_CXX23(std::fmod(1.5, 1.0) == 0.5);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmod(1.5L, 1.0L) == 0.5L);
+  ASSERT_CONSTEXPR_CXX23(std::fmodf(1.5f, 1.0f) == 0.5f);
+  ASSERT_CONSTEXPR_CXX23(std::fmodl(1.5L, 1.0L) == 0.5L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainder(0.5f, 1.0f) == 0.5f);
+  ASSERT_CONSTEXPR_CXX23(std::remainder(0.5, 1.0) == 0.5);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remainder(0.5L, 1.0L) == 0.5L);
+  ASSERT_CONSTEXPR_CXX23(std::remainderf(0.5f, 1.0f) == 0.5f);
+  ASSERT_CONSTEXPR_CXX23(std::remainderl(0.5L, 1.0L) == 0.5L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquo(0.5f, 1.0f, &DummyInt) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquo(0.5, 1.0, &DummyInt) == 0.5);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquo(0.5L, 1.0L, &DummyInt) == 0.5L);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquof(0.5f, 1.0f, &DummyInt) == 0.5f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::remquol(0.5L, 1.0L, &DummyInt) == 0.5L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysign(1.0f, 1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::copysign(1.0, 1.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::copysign(1.0L, 1.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::copysignf(1.0f, 1.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::copysignl(1.0L, 1.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafter(0.0f, 0.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::nextafter(0.0, 0.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nextafter(0.0L, 0.0L) == 0.0L);
+  ASSERT_CONSTEXPR_CXX23(std::nextafterf(0.0f, 0.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::nextafterl(0.0L, 0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttoward(0.0f, 0.0L) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::nexttoward(0.0, 0.0L) == 0.0f);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::nexttoward(0.0L, 0.0L) == 0.0L);
+  ASSERT_CONSTEXPR_CXX23(std::nexttowardf(0.0f, 0.0L) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::nexttowardl(0.0L, 0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdim(1.0f, 0.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fdim(1.0, 0.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fdim(1.0L, 0.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::fdimf(1.0f, 0.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fdiml(1.0L, 0.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmax(1.0f, 0.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fmax(1.0, 0.0) == 1.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmax(1.0L, 0.0L) == 1.0L);
+  ASSERT_CONSTEXPR_CXX23(std::fmaxf(1.0f, 0.0f) == 1.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fmaxl(1.0L, 0.0L) == 1.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmin(1.0f, 0.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fmin(1.0, 0.0) == 0.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fmin(1.0L, 0.0L) == 0.0L);
+  ASSERT_CONSTEXPR_CXX23(std::fminf(1.0f, 0.0f) == 0.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fminl(1.0L, 0.0L) == 0.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fma(1.0f, 1.0f, 1.0f) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fma(1.0, 1.0, 1.0) == 2.0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fma(1.0L, 1.0L, 1.0L) == 2.0L);
+  ASSERT_CONSTEXPR_CXX23(std::fmaf(1.0f, 1.0f, 1.0f) == 2.0f);
+  ASSERT_CONSTEXPR_CXX23(std::fmal(1.0L, 1.0L, 1.0L) == 2.0L);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fpclassify(-1.0f) == FP_NORMAL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fpclassify(-1.0) == FP_NORMAL);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::fpclassify(-1.0L) == FP_NORMAL);
+
+  ASSERT_CONSTEXPR_CXX23(std::isfinite(-1.0f) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isfinite(-1.0) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isfinite(-1.0L) == 1);
+
+  ASSERT_CONSTEXPR_CXX23(std::isinf(-1.0f) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isinf(-1.0) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isinf(-1.0L) == 0);
+
+  ASSERT_CONSTEXPR_CXX23(std::isnan(-1.0f) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isnan(-1.0) == 0);
+  ASSERT_CONSTEXPR_CXX23(std::isnan(-1.0L) == 0);
+
+  ASSERT_CONSTEXPR_CXX23(std::isnormal(-1.0f) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isnormal(-1.0) == 1);
+  ASSERT_CONSTEXPR_CXX23(std::isnormal(-1.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::signbit(-1.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::signbit(-1.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::signbit(-1.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreater(-1.0f, 0.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreater(-1.0, 0.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreater(-1.0L, 0.0L) == 0);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreaterequal(-1.0f, 0.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreaterequal(-1.0, 0.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isgreaterequal(-1.0L, 0.0L) == 0);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isless(-1.0f, 0.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isless(-1.0, 0.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isless(-1.0L, 0.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessequal(-1.0f, 0.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessequal(-1.0, 0.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessequal(-1.0L, 0.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessgreater(-1.0f, 0.0f) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessgreater(-1.0, 0.0) == 1);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::islessgreater(-1.0L, 0.0L) == 1);
+
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isunordered(-1.0f, 0.0f) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isunordered(-1.0, 0.0) == 0);
+  ASSERT_NOT_CONSTEXPR_CXX23(std::isunordered(-1.0L, 0.0L) == 0);
+
+  assert(!ImplementedP0533R9 && R"(
+Congratulations! You just have implemented P0533R9 (https://wg21.link/p0533r9).
+Please go to `clang/www/cxx_status.html` and change the paper's implementation
+status. Also please delete this assert and refactor `ASSERT_CONSTEXPR_CXX23`
+and `ASSERT_NOT_CONSTEXPR_CXX23`.
+)");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-fns.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-fns.pass.cpp
new file mode 100644
index 0000000..3739bc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/constexpr-fns.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that the overloads of std::__libcpp_{isnan,isinf,isfinite} that take
+// floating-point values are evaluatable from constexpr contexts.
+//
+// These functions need to be constexpr in order to be called from CUDA, see
+// https://reviews.llvm.org/D25403.  They don't actually need to be
+// constexpr-evaluatable, but that's what we check here, since we can't check
+// true constexpr-ness.
+//
+// UNSUPPORTED: c++03
+
+#include <cmath>
+
+#include "test_macros.h"
+
+static_assert(std::__constexpr_isnan(0.) == false, "");
+static_assert(std::__constexpr_isinf(0.0) == false, "");
+static_assert(std::__constexpr_isfinite(0.0) == true, "");
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/ctgmath.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/ctgmath.pass.cpp
new file mode 100644
index 0000000..39b79db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/ctgmath.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ctgmath>
+
+#include <ctgmath>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+    std::complex<double> cd;
+    ((void)cd);
+    double x = std::sin(0);
+    ((void)x);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/fdelayed-template-parsing.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/fdelayed-template-parsing.pass.cpp
new file mode 100644
index 0000000..a366e8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/fdelayed-template-parsing.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that cmath builds with -fdelayed-template-parsing.
+// This is a regression test for an issue introduced in ae22f0b24231,
+// where Clang's limited support for -fdelayed-template-parsing would
+// choke on <cmath>.
+
+// REQUIRES: fdelayed-template-parsing
+// ADDITIONAL_COMPILE_FLAGS: -fdelayed-template-parsing
+
+#include <cmath>
+#include <cassert>
+
+int main(int, char**) {
+  assert(std::isfinite(1.0));
+  assert(!std::isinf(1.0));
+  assert(!std::isnan(1.0));
+
+  return 0;
+}
+
+using namespace std; // on purpose
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/tgmath_h.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/tgmath_h.pass.cpp
new file mode 100644
index 0000000..d564d73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/tgmath_h.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tgmath.h>
+
+#include <tgmath.h>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/version_cmath.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/version_cmath.pass.cpp
new file mode 100644
index 0000000..281068f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/c.math/version_cmath.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cmath>
+
+#include <cmath>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/cfenv/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/cfenv/version.pass.cpp
new file mode 100644
index 0000000..35102be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/cfenv/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cfenv>
+
+#include <cfenv>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/clamp_to_integral.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/clamp_to_integral.pass.cpp
new file mode 100644
index 0000000..a826555
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/clamp_to_integral.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// __clamp_to_integral<IntT>(RealT)
+
+// Test the conversion function that truncates floating point types to the
+// closest representable value for the specified integer type, or
+// numeric_limits<IntT>::max()/min() if the value isn't representable.
+
+#include <cassert>
+#include <cmath>
+#include <limits>
+#include <random> // for __clamp_to_integral
+
+template <class IntT>
+void test() {
+  typedef std::numeric_limits<IntT> Lim;
+  const bool MaxIsRepresentable = sizeof(IntT) < 8;
+  const bool IsSigned = std::is_signed<IntT>::value;
+  struct TestCase {
+    double Input;
+    IntT Expect;
+    bool IsRepresentable;
+  } TestCases[] = {
+      {0, 0, true},
+      {1, 1, true},
+      {IsSigned ? static_cast<IntT>(-1) : 0,
+       IsSigned ? static_cast<IntT>(-1) : 0, true},
+      {Lim::lowest(), Lim::lowest(), true},
+      {static_cast<double>(Lim::max()), Lim::max(), MaxIsRepresentable},
+      {static_cast<double>(Lim::max()) + 1, Lim::max(), false},
+      {static_cast<double>(Lim::max()) + 1024, Lim::max(), false},
+      {nextafter(static_cast<double>(Lim::max()), INFINITY), Lim::max(), false},
+  };
+  for (TestCase TC : TestCases) {
+    auto res = std::__clamp_to_integral<IntT>(TC.Input);
+    assert(res == TC.Expect);
+    if (TC.IsRepresentable) {
+      auto other = static_cast<IntT>(std::trunc(TC.Input));
+      assert(res == other);
+    } else
+      assert(res == Lim::min() || res == Lim::max());
+  }
+}
+
+template <class IntT>
+void test_float() {
+  typedef std::numeric_limits<IntT> Lim;
+  const bool MaxIsRepresentable = sizeof(IntT) < 4;
+  ((void)MaxIsRepresentable);
+  const bool IsSigned = std::is_signed<IntT>::value;
+  struct TestCase {
+    float Input;
+    IntT Expect;
+    bool IsRepresentable;
+  } TestCases[] = {
+      {0, 0, true},
+      {1, 1, true},
+      {IsSigned ? static_cast<IntT>(-1) : 0,
+       IsSigned ? static_cast<IntT>(-1) : 0, true},
+      {Lim::lowest(), Lim::lowest(), true},
+      {static_cast<float>(Lim::max()), Lim::max(), MaxIsRepresentable },
+       {nextafter(static_cast<float>(Lim::max()), INFINITY), Lim::max(), false},
+  };
+  for (TestCase TC : TestCases) {
+    auto res = std::__clamp_to_integral<IntT>(TC.Input);
+    assert(res == TC.Expect);
+    if (TC.IsRepresentable) {
+      auto other = static_cast<IntT>(std::trunc(TC.Input));
+      assert(res == other);
+    } else
+      assert(res == Lim::min() || res == Lim::max());
+  }
+}
+
+int main(int, char**) {
+  test<short>();
+  test<unsigned short>();
+  test<int>();
+  test<unsigned>();
+  test<long long>();
+  test<unsigned long long>();
+  test_float<short>();
+  test_float<int>();
+  test_float<long long>();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/__sqr.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/__sqr.pass.cpp
new file mode 100644
index 0000000..97f4a24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/__sqr.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   __sqr(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    const T tolerance = std::is_same<T, float>::value ? 1.e-6 : 1.e-14;
+
+    typedef std::complex<T> cplx;
+    struct test_case
+    {
+        cplx value;
+        cplx expected;
+    };
+
+    const test_case cases[] = {
+        {cplx( 0,  0), cplx( 0,  0)},
+        {cplx( 1,  0), cplx( 1,  0)},
+        {cplx( 2,  0), cplx( 4,  0)},
+        {cplx(-1,  0), cplx( 1,  0)},
+        {cplx( 0,  1), cplx(-1,  0)},
+        {cplx( 0,  2), cplx(-4,  0)},
+        {cplx( 0, -1), cplx(-1,  0)},
+        {cplx( 1,  1), cplx( 0,  2)},
+        {cplx( 1, -1), cplx( 0, -2)},
+        {cplx(-1, -1), cplx( 0,  2)},
+        {cplx(0.5, 0), cplx(0.25, 0)},
+    };
+
+    const unsigned num_cases = sizeof(cases) / sizeof(test_case);
+    for (unsigned i = 0; i < num_cases; ++i)
+    {
+        const test_case& test = cases[i];
+        const std::complex<T> actual = std::__sqr(test.value);
+        assert(std::abs(actual.real() - test.expected.real()) < tolerance);
+        assert(std::abs(actual.imag() - test.expected.imag()) < tolerance);
+    }
+
+    const cplx nan1 = std::__sqr(cplx(NAN, 0));
+    assert(std::isnan(nan1.real()));
+    assert(std::isnan(nan1.imag()));
+
+    const cplx nan2 = std::__sqr(cplx(0, NAN));
+    assert(std::isnan(nan2.real()));
+    assert(std::isnan(nan2.imag()));
+
+    const cplx nan3 = std::__sqr(cplx(NAN, NAN));
+    assert(std::isnan(nan3.real()));
+    assert(std::isnan(nan3.imag()));
+
+    const cplx inf1 = std::__sqr(cplx(INFINITY, 0));
+    assert(std::isinf(inf1.real()));
+    assert(inf1.real() > 0);
+
+    const cplx inf2 = std::__sqr(cplx(0, INFINITY));
+    assert(std::isinf(inf2.real()));
+    assert(inf2.real() < 0);
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/ccmplx/ccomplex.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/ccmplx/ccomplex.pass.cpp
new file mode 100644
index 0000000..da3a497
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/ccmplx/ccomplex.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ccomplex>
+
+#include <ccomplex>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+    std::complex<double> d;
+    (void)d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/version.pass.cpp
new file mode 100644
index 0000000..d8310a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/complex.number/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+#include <complex>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/numarray/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/numarray/version.pass.cpp
new file mode 100644
index 0000000..34f666e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/numarray/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+#include <valarray>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/numeric.ops/midpoint.integer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/numeric.ops/midpoint.integer.pass.cpp
new file mode 100644
index 0000000..054a682
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/numeric.ops/midpoint.integer.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <numeric>
+
+// template <class _Tp>
+// _Tp midpoint(_Tp __a, _Tp __b) noexcept
+//
+
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <numeric>
+
+#include "test_macros.h"
+
+//  Users are not supposed to provide template argument lists for
+//  functions in the standard library (there's an exception for min and max)
+//  However, libc++ protects against this for pointers, so we check to make
+//  sure that our protection is working here.
+//  In some cases midpoint<int>(0,0) might get deduced as the pointer overload.
+
+template <typename T>
+void test()
+{
+    ASSERT_SAME_TYPE(T, decltype(std::midpoint<T>(0, 0)));
+}
+
+int main(int, char**)
+{
+    test<signed char>();
+    test<short>();
+    test<int>();
+    test<long>();
+    test<long long>();
+
+    test<int8_t>();
+    test<int16_t>();
+    test<int32_t>();
+    test<int64_t>();
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>();
+    test<__uint128_t>();
+#endif
+
+    test<char>();
+    test<ptrdiff_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/numeric.ops/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/numeric.ops/version.pass.cpp
new file mode 100644
index 0000000..ed051fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/numeric.ops/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+#include <numeric>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.device/has-no-random-device.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.device/has-no-random-device.verify.cpp
new file mode 100644
index 0000000..7559c88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.device/has-no-random-device.verify.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that std::random_device is not available in namespace std:: when
+// libc++ is built without support for random device.
+
+// REQUIRES: no-random-device
+
+#include <random>
+
+int main(int, char**) {
+  std::random_device d; // expected-error {{no type named 'random_device' in namespace 'std'}}
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bernoulli/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bernoulli/bad_engine.verify.cpp
new file mode 100644
index 0000000..c2a349a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bernoulli/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::bernoulli_distribution dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bin/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bin/bad_engine.verify.cpp
new file mode 100644
index 0000000..b03f6b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bin/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::binomial_distribution<int> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.geo/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.geo/bad_engine.verify.cpp
new file mode 100644
index 0000000..4adfda8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.geo/bad_engine.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -Wno-sign-compare -Wno-shift-count-negative
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::geometric_distribution<int> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 7 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.negbin/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.negbin/bad_engine.verify.cpp
new file mode 100644
index 0000000..6936d8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.negbin/bad_engine.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -Wno-shift-count-negative
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::negative_binomial_distribution<int> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 7 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.cauchy/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.cauchy/bad_engine.verify.cpp
new file mode 100644
index 0000000..118e0be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.cauchy/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::cauchy_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.chisq/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.chisq/bad_engine.verify.cpp
new file mode 100644
index 0000000..347a5f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.chisq/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::chi_squared_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 3 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.f/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.f/bad_engine.verify.cpp
new file mode 100644
index 0000000..22268d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.f/bad_engine.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -Wno-sign-compare
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::fisher_f_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 4 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.lognormal/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.lognormal/bad_engine.verify.cpp
new file mode 100644
index 0000000..b168a2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.lognormal/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::lognormal_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.normal/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.normal/bad_engine.verify.cpp
new file mode 100644
index 0000000..6ccec0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.normal/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::normal_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/bad_engine.verify.cpp
new file mode 100644
index 0000000..7daef43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.norm/rand.dist.norm.t/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::student_t_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 5 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.exp/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.exp/bad_engine.verify.cpp
new file mode 100644
index 0000000..5f43f80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.exp/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::exponential_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.extreme/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.extreme/bad_engine.verify.cpp
new file mode 100644
index 0000000..f6fd32a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.extreme/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::extreme_value_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.gamma/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.gamma/bad_engine.verify.cpp
new file mode 100644
index 0000000..5ae0083
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.gamma/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::gamma_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 3 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.poisson/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.poisson/bad_engine.verify.cpp
new file mode 100644
index 0000000..67b5a86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.poisson/bad_engine.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -Wno-shift-count-negative
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::poisson_distribution<int> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 4 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.weibull/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.weibull/bad_engine.verify.cpp
new file mode 100644
index 0000000..0c3ae5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.weibull/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::weibull_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.discrete/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.discrete/bad_engine.verify.cpp
new file mode 100644
index 0000000..bd5f2b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.discrete/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::discrete_distribution<int> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.pconst/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.pconst/bad_engine.verify.cpp
new file mode 100644
index 0000000..ef65a49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.pconst/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::piecewise_constant_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.plinear/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.plinear/bad_engine.verify.cpp
new file mode 100644
index 0000000..e733aff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.samp/rand.dist.samp.plinear/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::piecewise_linear_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.uni/rand.dist.uni.int/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.uni/rand.dist.uni.int/bad_engine.verify.cpp
new file mode 100644
index 0000000..5b2f447
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.uni/rand.dist.uni.int/bad_engine.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -Wno-sign-compare
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::uniform_int_distribution<int> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.uni/rand.dist.uni.real/bad_engine.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.uni/rand.dist.uni.real/bad_engine.verify.cpp
new file mode 100644
index 0000000..5c9feba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.dis/rand.dist.uni/rand.dist.uni.real/bad_engine.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+#include <random>
+
+template<class Int>
+struct G {
+  using result_type = Int;
+  result_type operator()();
+  static constexpr result_type min() { return 0; }
+  static constexpr result_type max() { return 255; }
+};
+
+void test(std::uniform_real_distribution<double> dist)
+{
+  G<int> badg;
+  G<unsigned> okg;
+
+  dist(badg); //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed}} //expected-note {{in instantiation}}
+  dist(okg);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.req.urng/valid_int_type.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.req.urng/valid_int_type.verify.cpp
new file mode 100644
index 0000000..eada742
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.req.urng/valid_int_type.verify.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+#include <random>
+
+void test()
+{
+  {
+    std::binomial_distribution<bool> baddist; //expected-error@*:* {{IntType must be a supported integer type}}
+    std::binomial_distribution<int> okdist;
+    (void)baddist;
+    (void)okdist;
+  }
+  {
+    std::discrete_distribution<bool> baddist; //expected-error@*:* {{IntType must be a supported integer type}}
+    std::discrete_distribution<int> okdist;
+    (void)baddist;
+    (void)okdist;
+  }
+  {
+    std::geometric_distribution<bool> baddist; //expected-error@*:* {{IntType must be a supported integer type}}
+    std::geometric_distribution<int> okdist;
+    (void)baddist;
+    (void)okdist;
+  }
+  {
+    std::negative_binomial_distribution<bool> baddist; //expected-error@*:* {{IntType must be a supported integer type}}
+    std::negative_binomial_distribution<int> okdist;
+    (void)baddist;
+    (void)okdist;
+  }
+  {
+    std::poisson_distribution<bool> baddist; //expected-error@*:* {{IntType must be a supported integer type}}
+    std::poisson_distribution<int> okdist;
+    (void)baddist;
+    (void)okdist;
+  }
+  {
+    std::uniform_int_distribution<bool> baddist; //expected-error@*:* {{IntType must be a supported integer type}}
+    std::uniform_int_distribution<int> okdist;
+    (void)baddist;
+    (void)okdist;
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.synopsis/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.synopsis/version.pass.cpp
new file mode 100644
index 0000000..60497e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/numerics/rand/rand.synopsis/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+#include <random>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/private_headers.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/private_headers.verify.cpp
new file mode 100644
index 0000000..ebbd50b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/private_headers.verify.cpp
@@ -0,0 +1,736 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test ensures that we produce a diagnostic when we use a private header
+// from user code.
+
+// REQUIRES: modules-build
+
+/*
+BEGIN-SCRIPT
+
+for header in private_headers:
+  # Skip headers that are not private yet in the modulemap
+  if header in private_headers_still_public_in_modules:
+    continue
+
+  # Skip private headers that start with __support -- those are not in the modulemap yet
+  if header.startswith('__support'):
+    continue
+
+  print("{ifdef}#{indent}include <{header}> // {expected_error}@*:* {{{{use of private header from outside its module: '{header}'}}}}{endif}".format(
+    ifdef='#if ' + header_restrictions[header] + '\n' if header in header_restrictions else '',
+    indent='   ' if header in header_restrictions else '',
+    header=header,
+    expected_error='expected-error',
+    endif='\n#endif' if header in header_restrictions else ''
+  ))
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+#include <__algorithm/adjacent_find.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/adjacent_find.h'}}
+#include <__algorithm/all_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/all_of.h'}}
+#include <__algorithm/any_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/any_of.h'}}
+#include <__algorithm/binary_search.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/binary_search.h'}}
+#include <__algorithm/clamp.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/clamp.h'}}
+#include <__algorithm/comp.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/comp.h'}}
+#include <__algorithm/comp_ref_type.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/comp_ref_type.h'}}
+#include <__algorithm/copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/copy.h'}}
+#include <__algorithm/copy_backward.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/copy_backward.h'}}
+#include <__algorithm/copy_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/copy_if.h'}}
+#include <__algorithm/copy_move_common.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/copy_move_common.h'}}
+#include <__algorithm/copy_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/copy_n.h'}}
+#include <__algorithm/count.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/count.h'}}
+#include <__algorithm/count_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/count_if.h'}}
+#include <__algorithm/equal.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/equal.h'}}
+#include <__algorithm/equal_range.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/equal_range.h'}}
+#include <__algorithm/fill.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/fill.h'}}
+#include <__algorithm/fill_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/fill_n.h'}}
+#include <__algorithm/find.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/find.h'}}
+#include <__algorithm/find_end.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/find_end.h'}}
+#include <__algorithm/find_first_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/find_first_of.h'}}
+#include <__algorithm/find_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/find_if.h'}}
+#include <__algorithm/find_if_not.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/find_if_not.h'}}
+#include <__algorithm/for_each.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/for_each.h'}}
+#include <__algorithm/for_each_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/for_each_n.h'}}
+#include <__algorithm/generate.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/generate.h'}}
+#include <__algorithm/generate_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/generate_n.h'}}
+#include <__algorithm/half_positive.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/half_positive.h'}}
+#include <__algorithm/in_found_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/in_found_result.h'}}
+#include <__algorithm/in_fun_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/in_fun_result.h'}}
+#include <__algorithm/in_in_out_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/in_in_out_result.h'}}
+#include <__algorithm/in_in_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/in_in_result.h'}}
+#include <__algorithm/in_out_out_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/in_out_out_result.h'}}
+#include <__algorithm/in_out_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/in_out_result.h'}}
+#include <__algorithm/includes.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/includes.h'}}
+#include <__algorithm/inplace_merge.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/inplace_merge.h'}}
+#include <__algorithm/is_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/is_heap.h'}}
+#include <__algorithm/is_heap_until.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/is_heap_until.h'}}
+#include <__algorithm/is_partitioned.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/is_partitioned.h'}}
+#include <__algorithm/is_permutation.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/is_permutation.h'}}
+#include <__algorithm/is_sorted.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/is_sorted.h'}}
+#include <__algorithm/is_sorted_until.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/is_sorted_until.h'}}
+#include <__algorithm/iter_swap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/iter_swap.h'}}
+#include <__algorithm/iterator_operations.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/iterator_operations.h'}}
+#include <__algorithm/lexicographical_compare.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/lexicographical_compare.h'}}
+#include <__algorithm/lower_bound.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/lower_bound.h'}}
+#include <__algorithm/make_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/make_heap.h'}}
+#include <__algorithm/make_projected.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/make_projected.h'}}
+#include <__algorithm/max.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/max.h'}}
+#include <__algorithm/max_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/max_element.h'}}
+#include <__algorithm/merge.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/merge.h'}}
+#include <__algorithm/min.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/min.h'}}
+#include <__algorithm/min_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/min_element.h'}}
+#include <__algorithm/min_max_result.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/min_max_result.h'}}
+#include <__algorithm/minmax.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/minmax.h'}}
+#include <__algorithm/minmax_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/minmax_element.h'}}
+#include <__algorithm/mismatch.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/mismatch.h'}}
+#include <__algorithm/move.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/move.h'}}
+#include <__algorithm/move_backward.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/move_backward.h'}}
+#include <__algorithm/next_permutation.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/next_permutation.h'}}
+#include <__algorithm/none_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/none_of.h'}}
+#include <__algorithm/nth_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/nth_element.h'}}
+#include <__algorithm/partial_sort.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/partial_sort.h'}}
+#include <__algorithm/partial_sort_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/partial_sort_copy.h'}}
+#include <__algorithm/partition.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/partition.h'}}
+#include <__algorithm/partition_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/partition_copy.h'}}
+#include <__algorithm/partition_point.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/partition_point.h'}}
+#include <__algorithm/pop_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/pop_heap.h'}}
+#include <__algorithm/prev_permutation.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/prev_permutation.h'}}
+#include <__algorithm/push_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/push_heap.h'}}
+#include <__algorithm/ranges_adjacent_find.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_adjacent_find.h'}}
+#include <__algorithm/ranges_all_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_all_of.h'}}
+#include <__algorithm/ranges_any_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_any_of.h'}}
+#include <__algorithm/ranges_binary_search.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_binary_search.h'}}
+#include <__algorithm/ranges_clamp.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_clamp.h'}}
+#include <__algorithm/ranges_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_copy.h'}}
+#include <__algorithm/ranges_copy_backward.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_copy_backward.h'}}
+#include <__algorithm/ranges_copy_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_copy_if.h'}}
+#include <__algorithm/ranges_copy_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_copy_n.h'}}
+#include <__algorithm/ranges_count.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_count.h'}}
+#include <__algorithm/ranges_count_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_count_if.h'}}
+#include <__algorithm/ranges_equal.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_equal.h'}}
+#include <__algorithm/ranges_equal_range.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_equal_range.h'}}
+#include <__algorithm/ranges_fill.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_fill.h'}}
+#include <__algorithm/ranges_fill_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_fill_n.h'}}
+#include <__algorithm/ranges_find.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_find.h'}}
+#include <__algorithm/ranges_find_end.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_find_end.h'}}
+#include <__algorithm/ranges_find_first_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_find_first_of.h'}}
+#include <__algorithm/ranges_find_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_find_if.h'}}
+#include <__algorithm/ranges_find_if_not.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_find_if_not.h'}}
+#include <__algorithm/ranges_for_each.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_for_each.h'}}
+#include <__algorithm/ranges_for_each_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_for_each_n.h'}}
+#include <__algorithm/ranges_generate.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_generate.h'}}
+#include <__algorithm/ranges_generate_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_generate_n.h'}}
+#include <__algorithm/ranges_includes.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_includes.h'}}
+#include <__algorithm/ranges_inplace_merge.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_inplace_merge.h'}}
+#include <__algorithm/ranges_is_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_is_heap.h'}}
+#include <__algorithm/ranges_is_heap_until.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_is_heap_until.h'}}
+#include <__algorithm/ranges_is_partitioned.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_is_partitioned.h'}}
+#include <__algorithm/ranges_is_permutation.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_is_permutation.h'}}
+#include <__algorithm/ranges_is_sorted.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_is_sorted.h'}}
+#include <__algorithm/ranges_is_sorted_until.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_is_sorted_until.h'}}
+#include <__algorithm/ranges_iterator_concept.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_iterator_concept.h'}}
+#include <__algorithm/ranges_lexicographical_compare.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_lexicographical_compare.h'}}
+#include <__algorithm/ranges_lower_bound.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_lower_bound.h'}}
+#include <__algorithm/ranges_make_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_make_heap.h'}}
+#include <__algorithm/ranges_max.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_max.h'}}
+#include <__algorithm/ranges_max_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_max_element.h'}}
+#include <__algorithm/ranges_merge.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_merge.h'}}
+#include <__algorithm/ranges_min.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_min.h'}}
+#include <__algorithm/ranges_min_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_min_element.h'}}
+#include <__algorithm/ranges_minmax.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_minmax.h'}}
+#include <__algorithm/ranges_minmax_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_minmax_element.h'}}
+#include <__algorithm/ranges_mismatch.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_mismatch.h'}}
+#include <__algorithm/ranges_move.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_move.h'}}
+#include <__algorithm/ranges_move_backward.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_move_backward.h'}}
+#include <__algorithm/ranges_next_permutation.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_next_permutation.h'}}
+#include <__algorithm/ranges_none_of.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_none_of.h'}}
+#include <__algorithm/ranges_nth_element.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_nth_element.h'}}
+#include <__algorithm/ranges_partial_sort.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_partial_sort.h'}}
+#include <__algorithm/ranges_partial_sort_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_partial_sort_copy.h'}}
+#include <__algorithm/ranges_partition.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_partition.h'}}
+#include <__algorithm/ranges_partition_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_partition_copy.h'}}
+#include <__algorithm/ranges_partition_point.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_partition_point.h'}}
+#include <__algorithm/ranges_pop_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_pop_heap.h'}}
+#include <__algorithm/ranges_prev_permutation.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_prev_permutation.h'}}
+#include <__algorithm/ranges_push_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_push_heap.h'}}
+#include <__algorithm/ranges_remove.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_remove.h'}}
+#include <__algorithm/ranges_remove_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_remove_copy.h'}}
+#include <__algorithm/ranges_remove_copy_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_remove_copy_if.h'}}
+#include <__algorithm/ranges_remove_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_remove_if.h'}}
+#include <__algorithm/ranges_replace.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_replace.h'}}
+#include <__algorithm/ranges_replace_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_replace_copy.h'}}
+#include <__algorithm/ranges_replace_copy_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_replace_copy_if.h'}}
+#include <__algorithm/ranges_replace_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_replace_if.h'}}
+#include <__algorithm/ranges_reverse.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_reverse.h'}}
+#include <__algorithm/ranges_reverse_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_reverse_copy.h'}}
+#include <__algorithm/ranges_rotate.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_rotate.h'}}
+#include <__algorithm/ranges_rotate_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_rotate_copy.h'}}
+#include <__algorithm/ranges_sample.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_sample.h'}}
+#include <__algorithm/ranges_search.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_search.h'}}
+#include <__algorithm/ranges_search_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_search_n.h'}}
+#include <__algorithm/ranges_set_difference.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_set_difference.h'}}
+#include <__algorithm/ranges_set_intersection.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_set_intersection.h'}}
+#include <__algorithm/ranges_set_symmetric_difference.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_set_symmetric_difference.h'}}
+#include <__algorithm/ranges_set_union.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_set_union.h'}}
+#include <__algorithm/ranges_shuffle.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_shuffle.h'}}
+#include <__algorithm/ranges_sort.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_sort.h'}}
+#include <__algorithm/ranges_sort_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_sort_heap.h'}}
+#include <__algorithm/ranges_stable_partition.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_stable_partition.h'}}
+#include <__algorithm/ranges_stable_sort.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_stable_sort.h'}}
+#include <__algorithm/ranges_swap_ranges.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_swap_ranges.h'}}
+#include <__algorithm/ranges_transform.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_transform.h'}}
+#include <__algorithm/ranges_unique.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_unique.h'}}
+#include <__algorithm/ranges_unique_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_unique_copy.h'}}
+#include <__algorithm/ranges_upper_bound.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/ranges_upper_bound.h'}}
+#include <__algorithm/remove.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/remove.h'}}
+#include <__algorithm/remove_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/remove_copy.h'}}
+#include <__algorithm/remove_copy_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/remove_copy_if.h'}}
+#include <__algorithm/remove_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/remove_if.h'}}
+#include <__algorithm/replace.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/replace.h'}}
+#include <__algorithm/replace_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/replace_copy.h'}}
+#include <__algorithm/replace_copy_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/replace_copy_if.h'}}
+#include <__algorithm/replace_if.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/replace_if.h'}}
+#include <__algorithm/reverse.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/reverse.h'}}
+#include <__algorithm/reverse_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/reverse_copy.h'}}
+#include <__algorithm/rotate.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/rotate.h'}}
+#include <__algorithm/rotate_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/rotate_copy.h'}}
+#include <__algorithm/sample.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/sample.h'}}
+#include <__algorithm/search.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/search.h'}}
+#include <__algorithm/search_n.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/search_n.h'}}
+#include <__algorithm/set_difference.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/set_difference.h'}}
+#include <__algorithm/set_intersection.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/set_intersection.h'}}
+#include <__algorithm/set_symmetric_difference.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/set_symmetric_difference.h'}}
+#include <__algorithm/set_union.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/set_union.h'}}
+#include <__algorithm/shift_left.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/shift_left.h'}}
+#include <__algorithm/shift_right.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/shift_right.h'}}
+#include <__algorithm/shuffle.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/shuffle.h'}}
+#include <__algorithm/sift_down.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/sift_down.h'}}
+#include <__algorithm/sort.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/sort.h'}}
+#include <__algorithm/sort_heap.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/sort_heap.h'}}
+#include <__algorithm/stable_partition.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/stable_partition.h'}}
+#include <__algorithm/stable_sort.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/stable_sort.h'}}
+#include <__algorithm/swap_ranges.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/swap_ranges.h'}}
+#include <__algorithm/transform.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/transform.h'}}
+#include <__algorithm/uniform_random_bit_generator_adaptor.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/uniform_random_bit_generator_adaptor.h'}}
+#include <__algorithm/unique.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/unique.h'}}
+#include <__algorithm/unique_copy.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/unique_copy.h'}}
+#include <__algorithm/unwrap_iter.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/unwrap_iter.h'}}
+#include <__algorithm/unwrap_range.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/unwrap_range.h'}}
+#include <__algorithm/upper_bound.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/upper_bound.h'}}
+#include <__availability> // expected-error@*:* {{use of private header from outside its module: '__availability'}}
+#include <__bit/bit_cast.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_cast.h'}}
+#include <__bit/bit_ceil.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_ceil.h'}}
+#include <__bit/bit_floor.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_floor.h'}}
+#include <__bit/bit_log2.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_log2.h'}}
+#include <__bit/bit_width.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_width.h'}}
+#include <__bit/blsr.h> // expected-error@*:* {{use of private header from outside its module: '__bit/blsr.h'}}
+#include <__bit/byteswap.h> // expected-error@*:* {{use of private header from outside its module: '__bit/byteswap.h'}}
+#include <__bit/countl.h> // expected-error@*:* {{use of private header from outside its module: '__bit/countl.h'}}
+#include <__bit/countr.h> // expected-error@*:* {{use of private header from outside its module: '__bit/countr.h'}}
+#include <__bit/endian.h> // expected-error@*:* {{use of private header from outside its module: '__bit/endian.h'}}
+#include <__bit/has_single_bit.h> // expected-error@*:* {{use of private header from outside its module: '__bit/has_single_bit.h'}}
+#include <__bit/popcount.h> // expected-error@*:* {{use of private header from outside its module: '__bit/popcount.h'}}
+#include <__bit/rotate.h> // expected-error@*:* {{use of private header from outside its module: '__bit/rotate.h'}}
+#include <__bit_reference> // expected-error@*:* {{use of private header from outside its module: '__bit_reference'}}
+#include <__charconv/chars_format.h> // expected-error@*:* {{use of private header from outside its module: '__charconv/chars_format.h'}}
+#include <__charconv/from_chars_result.h> // expected-error@*:* {{use of private header from outside its module: '__charconv/from_chars_result.h'}}
+#include <__charconv/tables.h> // expected-error@*:* {{use of private header from outside its module: '__charconv/tables.h'}}
+#include <__charconv/to_chars_base_10.h> // expected-error@*:* {{use of private header from outside its module: '__charconv/to_chars_base_10.h'}}
+#include <__charconv/to_chars_result.h> // expected-error@*:* {{use of private header from outside its module: '__charconv/to_chars_result.h'}}
+#include <__chrono/calendar.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/calendar.h'}}
+#include <__chrono/convert_to_timespec.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/convert_to_timespec.h'}}
+#include <__chrono/convert_to_tm.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/convert_to_tm.h'}}
+#include <__chrono/day.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/day.h'}}
+#include <__chrono/duration.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/duration.h'}}
+#include <__chrono/file_clock.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/file_clock.h'}}
+#include <__chrono/formatter.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/formatter.h'}}
+#include <__chrono/hh_mm_ss.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/hh_mm_ss.h'}}
+#include <__chrono/high_resolution_clock.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/high_resolution_clock.h'}}
+#include <__chrono/literals.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/literals.h'}}
+#include <__chrono/month.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/month.h'}}
+#include <__chrono/month_weekday.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/month_weekday.h'}}
+#include <__chrono/monthday.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/monthday.h'}}
+#include <__chrono/ostream.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/ostream.h'}}
+#include <__chrono/parser_std_format_spec.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/parser_std_format_spec.h'}}
+#include <__chrono/statically_widen.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/statically_widen.h'}}
+#include <__chrono/steady_clock.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/steady_clock.h'}}
+#include <__chrono/system_clock.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/system_clock.h'}}
+#include <__chrono/time_point.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/time_point.h'}}
+#include <__chrono/weekday.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/weekday.h'}}
+#include <__chrono/year.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/year.h'}}
+#include <__chrono/year_month.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/year_month.h'}}
+#include <__chrono/year_month_day.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/year_month_day.h'}}
+#include <__chrono/year_month_weekday.h> // expected-error@*:* {{use of private header from outside its module: '__chrono/year_month_weekday.h'}}
+#include <__compare/common_comparison_category.h> // expected-error@*:* {{use of private header from outside its module: '__compare/common_comparison_category.h'}}
+#include <__compare/compare_partial_order_fallback.h> // expected-error@*:* {{use of private header from outside its module: '__compare/compare_partial_order_fallback.h'}}
+#include <__compare/compare_strong_order_fallback.h> // expected-error@*:* {{use of private header from outside its module: '__compare/compare_strong_order_fallback.h'}}
+#include <__compare/compare_three_way.h> // expected-error@*:* {{use of private header from outside its module: '__compare/compare_three_way.h'}}
+#include <__compare/compare_three_way_result.h> // expected-error@*:* {{use of private header from outside its module: '__compare/compare_three_way_result.h'}}
+#include <__compare/compare_weak_order_fallback.h> // expected-error@*:* {{use of private header from outside its module: '__compare/compare_weak_order_fallback.h'}}
+#include <__compare/is_eq.h> // expected-error@*:* {{use of private header from outside its module: '__compare/is_eq.h'}}
+#include <__compare/ordering.h> // expected-error@*:* {{use of private header from outside its module: '__compare/ordering.h'}}
+#include <__compare/partial_order.h> // expected-error@*:* {{use of private header from outside its module: '__compare/partial_order.h'}}
+#include <__compare/strong_order.h> // expected-error@*:* {{use of private header from outside its module: '__compare/strong_order.h'}}
+#include <__compare/synth_three_way.h> // expected-error@*:* {{use of private header from outside its module: '__compare/synth_three_way.h'}}
+#include <__compare/three_way_comparable.h> // expected-error@*:* {{use of private header from outside its module: '__compare/three_way_comparable.h'}}
+#include <__compare/weak_order.h> // expected-error@*:* {{use of private header from outside its module: '__compare/weak_order.h'}}
+#include <__concepts/arithmetic.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/arithmetic.h'}}
+#include <__concepts/assignable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/assignable.h'}}
+#include <__concepts/boolean_testable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/boolean_testable.h'}}
+#include <__concepts/class_or_enum.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/class_or_enum.h'}}
+#include <__concepts/common_reference_with.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/common_reference_with.h'}}
+#include <__concepts/common_with.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/common_with.h'}}
+#include <__concepts/constructible.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/constructible.h'}}
+#include <__concepts/convertible_to.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/convertible_to.h'}}
+#include <__concepts/copyable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/copyable.h'}}
+#include <__concepts/derived_from.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/derived_from.h'}}
+#include <__concepts/destructible.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/destructible.h'}}
+#include <__concepts/different_from.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/different_from.h'}}
+#include <__concepts/equality_comparable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/equality_comparable.h'}}
+#include <__concepts/invocable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/invocable.h'}}
+#include <__concepts/movable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/movable.h'}}
+#include <__concepts/predicate.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/predicate.h'}}
+#include <__concepts/regular.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/regular.h'}}
+#include <__concepts/relation.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/relation.h'}}
+#include <__concepts/same_as.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/same_as.h'}}
+#include <__concepts/semiregular.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/semiregular.h'}}
+#include <__concepts/swappable.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/swappable.h'}}
+#include <__concepts/totally_ordered.h> // expected-error@*:* {{use of private header from outside its module: '__concepts/totally_ordered.h'}}
+#include <__coroutine/coroutine_handle.h> // expected-error@*:* {{use of private header from outside its module: '__coroutine/coroutine_handle.h'}}
+#include <__coroutine/coroutine_traits.h> // expected-error@*:* {{use of private header from outside its module: '__coroutine/coroutine_traits.h'}}
+#include <__coroutine/noop_coroutine_handle.h> // expected-error@*:* {{use of private header from outside its module: '__coroutine/noop_coroutine_handle.h'}}
+#include <__coroutine/trivial_awaitables.h> // expected-error@*:* {{use of private header from outside its module: '__coroutine/trivial_awaitables.h'}}
+#include <__debug_utils/randomize_range.h> // expected-error@*:* {{use of private header from outside its module: '__debug_utils/randomize_range.h'}}
+#include <__errc> // expected-error@*:* {{use of private header from outside its module: '__errc'}}
+#include <__expected/bad_expected_access.h> // expected-error@*:* {{use of private header from outside its module: '__expected/bad_expected_access.h'}}
+#include <__expected/expected.h> // expected-error@*:* {{use of private header from outside its module: '__expected/expected.h'}}
+#include <__expected/unexpect.h> // expected-error@*:* {{use of private header from outside its module: '__expected/unexpect.h'}}
+#include <__expected/unexpected.h> // expected-error@*:* {{use of private header from outside its module: '__expected/unexpected.h'}}
+#include <__filesystem/copy_options.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/copy_options.h'}}
+#include <__filesystem/directory_entry.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/directory_entry.h'}}
+#include <__filesystem/directory_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/directory_iterator.h'}}
+#include <__filesystem/directory_options.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/directory_options.h'}}
+#include <__filesystem/file_status.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/file_status.h'}}
+#include <__filesystem/file_time_type.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/file_time_type.h'}}
+#include <__filesystem/file_type.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/file_type.h'}}
+#include <__filesystem/filesystem_error.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/filesystem_error.h'}}
+#include <__filesystem/operations.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/operations.h'}}
+#include <__filesystem/path.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/path.h'}}
+#include <__filesystem/path_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/path_iterator.h'}}
+#include <__filesystem/perm_options.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/perm_options.h'}}
+#include <__filesystem/perms.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/perms.h'}}
+#include <__filesystem/recursive_directory_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/recursive_directory_iterator.h'}}
+#include <__filesystem/space_info.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/space_info.h'}}
+#include <__filesystem/u8path.h> // expected-error@*:* {{use of private header from outside its module: '__filesystem/u8path.h'}}
+#include <__format/buffer.h> // expected-error@*:* {{use of private header from outside its module: '__format/buffer.h'}}
+#include <__format/concepts.h> // expected-error@*:* {{use of private header from outside its module: '__format/concepts.h'}}
+#include <__format/container_adaptor.h> // expected-error@*:* {{use of private header from outside its module: '__format/container_adaptor.h'}}
+#include <__format/enable_insertable.h> // expected-error@*:* {{use of private header from outside its module: '__format/enable_insertable.h'}}
+#include <__format/escaped_output_table.h> // expected-error@*:* {{use of private header from outside its module: '__format/escaped_output_table.h'}}
+#include <__format/extended_grapheme_cluster_table.h> // expected-error@*:* {{use of private header from outside its module: '__format/extended_grapheme_cluster_table.h'}}
+#include <__format/format_arg.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_arg.h'}}
+#include <__format/format_arg_store.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_arg_store.h'}}
+#include <__format/format_args.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_args.h'}}
+#include <__format/format_context.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_context.h'}}
+#include <__format/format_error.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_error.h'}}
+#include <__format/format_functions.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_functions.h'}}
+#include <__format/format_fwd.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_fwd.h'}}
+#include <__format/format_parse_context.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_parse_context.h'}}
+#include <__format/format_string.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_string.h'}}
+#include <__format/format_to_n_result.h> // expected-error@*:* {{use of private header from outside its module: '__format/format_to_n_result.h'}}
+#include <__format/formatter.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter.h'}}
+#include <__format/formatter_bool.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_bool.h'}}
+#include <__format/formatter_char.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_char.h'}}
+#include <__format/formatter_floating_point.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_floating_point.h'}}
+#include <__format/formatter_integer.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_integer.h'}}
+#include <__format/formatter_integral.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_integral.h'}}
+#include <__format/formatter_output.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_output.h'}}
+#include <__format/formatter_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_pointer.h'}}
+#include <__format/formatter_string.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_string.h'}}
+#include <__format/formatter_tuple.h> // expected-error@*:* {{use of private header from outside its module: '__format/formatter_tuple.h'}}
+#include <__format/parser_std_format_spec.h> // expected-error@*:* {{use of private header from outside its module: '__format/parser_std_format_spec.h'}}
+#include <__format/range_default_formatter.h> // expected-error@*:* {{use of private header from outside its module: '__format/range_default_formatter.h'}}
+#include <__format/range_formatter.h> // expected-error@*:* {{use of private header from outside its module: '__format/range_formatter.h'}}
+#include <__format/unicode.h> // expected-error@*:* {{use of private header from outside its module: '__format/unicode.h'}}
+#include <__functional/binary_function.h> // expected-error@*:* {{use of private header from outside its module: '__functional/binary_function.h'}}
+#include <__functional/binary_negate.h> // expected-error@*:* {{use of private header from outside its module: '__functional/binary_negate.h'}}
+#include <__functional/bind.h> // expected-error@*:* {{use of private header from outside its module: '__functional/bind.h'}}
+#include <__functional/bind_back.h> // expected-error@*:* {{use of private header from outside its module: '__functional/bind_back.h'}}
+#include <__functional/bind_front.h> // expected-error@*:* {{use of private header from outside its module: '__functional/bind_front.h'}}
+#include <__functional/binder1st.h> // expected-error@*:* {{use of private header from outside its module: '__functional/binder1st.h'}}
+#include <__functional/binder2nd.h> // expected-error@*:* {{use of private header from outside its module: '__functional/binder2nd.h'}}
+#include <__functional/boyer_moore_searcher.h> // expected-error@*:* {{use of private header from outside its module: '__functional/boyer_moore_searcher.h'}}
+#include <__functional/compose.h> // expected-error@*:* {{use of private header from outside its module: '__functional/compose.h'}}
+#include <__functional/default_searcher.h> // expected-error@*:* {{use of private header from outside its module: '__functional/default_searcher.h'}}
+#include <__functional/function.h> // expected-error@*:* {{use of private header from outside its module: '__functional/function.h'}}
+#include <__functional/hash.h> // expected-error@*:* {{use of private header from outside its module: '__functional/hash.h'}}
+#include <__functional/identity.h> // expected-error@*:* {{use of private header from outside its module: '__functional/identity.h'}}
+#include <__functional/invoke.h> // expected-error@*:* {{use of private header from outside its module: '__functional/invoke.h'}}
+#include <__functional/is_transparent.h> // expected-error@*:* {{use of private header from outside its module: '__functional/is_transparent.h'}}
+#include <__functional/mem_fn.h> // expected-error@*:* {{use of private header from outside its module: '__functional/mem_fn.h'}}
+#include <__functional/mem_fun_ref.h> // expected-error@*:* {{use of private header from outside its module: '__functional/mem_fun_ref.h'}}
+#include <__functional/not_fn.h> // expected-error@*:* {{use of private header from outside its module: '__functional/not_fn.h'}}
+#include <__functional/operations.h> // expected-error@*:* {{use of private header from outside its module: '__functional/operations.h'}}
+#include <__functional/perfect_forward.h> // expected-error@*:* {{use of private header from outside its module: '__functional/perfect_forward.h'}}
+#include <__functional/pointer_to_binary_function.h> // expected-error@*:* {{use of private header from outside its module: '__functional/pointer_to_binary_function.h'}}
+#include <__functional/pointer_to_unary_function.h> // expected-error@*:* {{use of private header from outside its module: '__functional/pointer_to_unary_function.h'}}
+#include <__functional/ranges_operations.h> // expected-error@*:* {{use of private header from outside its module: '__functional/ranges_operations.h'}}
+#include <__functional/reference_wrapper.h> // expected-error@*:* {{use of private header from outside its module: '__functional/reference_wrapper.h'}}
+#include <__functional/unary_function.h> // expected-error@*:* {{use of private header from outside its module: '__functional/unary_function.h'}}
+#include <__functional/unary_negate.h> // expected-error@*:* {{use of private header from outside its module: '__functional/unary_negate.h'}}
+#include <__functional/unwrap_ref.h> // expected-error@*:* {{use of private header from outside its module: '__functional/unwrap_ref.h'}}
+#include <__functional/weak_result_type.h> // expected-error@*:* {{use of private header from outside its module: '__functional/weak_result_type.h'}}
+#include <__fwd/array.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/array.h'}}
+#include <__fwd/get.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/get.h'}}
+#include <__fwd/hash.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/hash.h'}}
+#include <__fwd/memory_resource.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/memory_resource.h'}}
+#include <__fwd/pair.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/pair.h'}}
+#include <__fwd/span.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/span.h'}}
+#include <__fwd/string.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/string.h'}}
+#include <__fwd/string_view.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/string_view.h'}}
+#include <__fwd/subrange.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/subrange.h'}}
+#include <__fwd/tuple.h> // expected-error@*:* {{use of private header from outside its module: '__fwd/tuple.h'}}
+#include <__ios/fpos.h> // expected-error@*:* {{use of private header from outside its module: '__ios/fpos.h'}}
+#include <__iterator/access.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/access.h'}}
+#include <__iterator/advance.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/advance.h'}}
+#include <__iterator/back_insert_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/back_insert_iterator.h'}}
+#include <__iterator/bounded_iter.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/bounded_iter.h'}}
+#include <__iterator/common_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/common_iterator.h'}}
+#include <__iterator/concepts.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/concepts.h'}}
+#include <__iterator/counted_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/counted_iterator.h'}}
+#include <__iterator/data.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/data.h'}}
+#include <__iterator/default_sentinel.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/default_sentinel.h'}}
+#include <__iterator/distance.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/distance.h'}}
+#include <__iterator/empty.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/empty.h'}}
+#include <__iterator/erase_if_container.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/erase_if_container.h'}}
+#include <__iterator/front_insert_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/front_insert_iterator.h'}}
+#include <__iterator/incrementable_traits.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/incrementable_traits.h'}}
+#include <__iterator/indirectly_comparable.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/indirectly_comparable.h'}}
+#include <__iterator/insert_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/insert_iterator.h'}}
+#include <__iterator/istream_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/istream_iterator.h'}}
+#include <__iterator/istreambuf_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/istreambuf_iterator.h'}}
+#include <__iterator/iter_move.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/iter_move.h'}}
+#include <__iterator/iter_swap.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/iter_swap.h'}}
+#include <__iterator/iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/iterator.h'}}
+#include <__iterator/iterator_traits.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/iterator_traits.h'}}
+#include <__iterator/iterator_with_data.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/iterator_with_data.h'}}
+#include <__iterator/mergeable.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/mergeable.h'}}
+#include <__iterator/move_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/move_iterator.h'}}
+#include <__iterator/move_sentinel.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/move_sentinel.h'}}
+#include <__iterator/next.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/next.h'}}
+#include <__iterator/ostream_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/ostream_iterator.h'}}
+#include <__iterator/ostreambuf_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/ostreambuf_iterator.h'}}
+#include <__iterator/permutable.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/permutable.h'}}
+#include <__iterator/prev.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/prev.h'}}
+#include <__iterator/projected.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/projected.h'}}
+#include <__iterator/readable_traits.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/readable_traits.h'}}
+#include <__iterator/reverse_access.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/reverse_access.h'}}
+#include <__iterator/reverse_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/reverse_iterator.h'}}
+#include <__iterator/segmented_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/segmented_iterator.h'}}
+#include <__iterator/size.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/size.h'}}
+#include <__iterator/sortable.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/sortable.h'}}
+#include <__iterator/unreachable_sentinel.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/unreachable_sentinel.h'}}
+#include <__iterator/wrap_iter.h> // expected-error@*:* {{use of private header from outside its module: '__iterator/wrap_iter.h'}}
+#include <__locale> // expected-error@*:* {{use of private header from outside its module: '__locale'}}
+#include <__mbstate_t.h> // expected-error@*:* {{use of private header from outside its module: '__mbstate_t.h'}}
+#include <__memory/addressof.h> // expected-error@*:* {{use of private header from outside its module: '__memory/addressof.h'}}
+#include <__memory/align.h> // expected-error@*:* {{use of private header from outside its module: '__memory/align.h'}}
+#include <__memory/allocate_at_least.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocate_at_least.h'}}
+#include <__memory/allocation_guard.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocation_guard.h'}}
+#include <__memory/allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocator.h'}}
+#include <__memory/allocator_arg_t.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocator_arg_t.h'}}
+#include <__memory/allocator_destructor.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocator_destructor.h'}}
+#include <__memory/allocator_traits.h> // expected-error@*:* {{use of private header from outside its module: '__memory/allocator_traits.h'}}
+#include <__memory/assume_aligned.h> // expected-error@*:* {{use of private header from outside its module: '__memory/assume_aligned.h'}}
+#include <__memory/auto_ptr.h> // expected-error@*:* {{use of private header from outside its module: '__memory/auto_ptr.h'}}
+#include <__memory/builtin_new_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/builtin_new_allocator.h'}}
+#include <__memory/compressed_pair.h> // expected-error@*:* {{use of private header from outside its module: '__memory/compressed_pair.h'}}
+#include <__memory/concepts.h> // expected-error@*:* {{use of private header from outside its module: '__memory/concepts.h'}}
+#include <__memory/construct_at.h> // expected-error@*:* {{use of private header from outside its module: '__memory/construct_at.h'}}
+#include <__memory/destruct_n.h> // expected-error@*:* {{use of private header from outside its module: '__memory/destruct_n.h'}}
+#include <__memory/pointer_traits.h> // expected-error@*:* {{use of private header from outside its module: '__memory/pointer_traits.h'}}
+#include <__memory/ranges_construct_at.h> // expected-error@*:* {{use of private header from outside its module: '__memory/ranges_construct_at.h'}}
+#include <__memory/ranges_uninitialized_algorithms.h> // expected-error@*:* {{use of private header from outside its module: '__memory/ranges_uninitialized_algorithms.h'}}
+#include <__memory/raw_storage_iterator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/raw_storage_iterator.h'}}
+#include <__memory/shared_ptr.h> // expected-error@*:* {{use of private header from outside its module: '__memory/shared_ptr.h'}}
+#include <__memory/swap_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/swap_allocator.h'}}
+#include <__memory/temp_value.h> // expected-error@*:* {{use of private header from outside its module: '__memory/temp_value.h'}}
+#include <__memory/temporary_buffer.h> // expected-error@*:* {{use of private header from outside its module: '__memory/temporary_buffer.h'}}
+#include <__memory/uninitialized_algorithms.h> // expected-error@*:* {{use of private header from outside its module: '__memory/uninitialized_algorithms.h'}}
+#include <__memory/unique_ptr.h> // expected-error@*:* {{use of private header from outside its module: '__memory/unique_ptr.h'}}
+#include <__memory/uses_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory/uses_allocator.h'}}
+#include <__memory/uses_allocator_construction.h> // expected-error@*:* {{use of private header from outside its module: '__memory/uses_allocator_construction.h'}}
+#include <__memory/voidify.h> // expected-error@*:* {{use of private header from outside its module: '__memory/voidify.h'}}
+#include <__memory_resource/memory_resource.h> // expected-error@*:* {{use of private header from outside its module: '__memory_resource/memory_resource.h'}}
+#include <__memory_resource/monotonic_buffer_resource.h> // expected-error@*:* {{use of private header from outside its module: '__memory_resource/monotonic_buffer_resource.h'}}
+#include <__memory_resource/polymorphic_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__memory_resource/polymorphic_allocator.h'}}
+#include <__memory_resource/pool_options.h> // expected-error@*:* {{use of private header from outside its module: '__memory_resource/pool_options.h'}}
+#include <__memory_resource/synchronized_pool_resource.h> // expected-error@*:* {{use of private header from outside its module: '__memory_resource/synchronized_pool_resource.h'}}
+#include <__memory_resource/unsynchronized_pool_resource.h> // expected-error@*:* {{use of private header from outside its module: '__memory_resource/unsynchronized_pool_resource.h'}}
+#include <__mutex_base> // expected-error@*:* {{use of private header from outside its module: '__mutex_base'}}
+#include <__node_handle> // expected-error@*:* {{use of private header from outside its module: '__node_handle'}}
+#include <__numeric/accumulate.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/accumulate.h'}}
+#include <__numeric/adjacent_difference.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/adjacent_difference.h'}}
+#include <__numeric/exclusive_scan.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/exclusive_scan.h'}}
+#include <__numeric/gcd_lcm.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/gcd_lcm.h'}}
+#include <__numeric/inclusive_scan.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/inclusive_scan.h'}}
+#include <__numeric/inner_product.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/inner_product.h'}}
+#include <__numeric/iota.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/iota.h'}}
+#include <__numeric/midpoint.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/midpoint.h'}}
+#include <__numeric/partial_sum.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/partial_sum.h'}}
+#include <__numeric/reduce.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/reduce.h'}}
+#include <__numeric/transform_exclusive_scan.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/transform_exclusive_scan.h'}}
+#include <__numeric/transform_inclusive_scan.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/transform_inclusive_scan.h'}}
+#include <__numeric/transform_reduce.h> // expected-error@*:* {{use of private header from outside its module: '__numeric/transform_reduce.h'}}
+#include <__random/bernoulli_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/bernoulli_distribution.h'}}
+#include <__random/binomial_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/binomial_distribution.h'}}
+#include <__random/cauchy_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/cauchy_distribution.h'}}
+#include <__random/chi_squared_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/chi_squared_distribution.h'}}
+#include <__random/clamp_to_integral.h> // expected-error@*:* {{use of private header from outside its module: '__random/clamp_to_integral.h'}}
+#include <__random/default_random_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/default_random_engine.h'}}
+#include <__random/discard_block_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/discard_block_engine.h'}}
+#include <__random/discrete_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/discrete_distribution.h'}}
+#include <__random/exponential_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/exponential_distribution.h'}}
+#include <__random/extreme_value_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/extreme_value_distribution.h'}}
+#include <__random/fisher_f_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/fisher_f_distribution.h'}}
+#include <__random/gamma_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/gamma_distribution.h'}}
+#include <__random/generate_canonical.h> // expected-error@*:* {{use of private header from outside its module: '__random/generate_canonical.h'}}
+#include <__random/geometric_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/geometric_distribution.h'}}
+#include <__random/independent_bits_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/independent_bits_engine.h'}}
+#include <__random/is_seed_sequence.h> // expected-error@*:* {{use of private header from outside its module: '__random/is_seed_sequence.h'}}
+#include <__random/is_valid.h> // expected-error@*:* {{use of private header from outside its module: '__random/is_valid.h'}}
+#include <__random/knuth_b.h> // expected-error@*:* {{use of private header from outside its module: '__random/knuth_b.h'}}
+#include <__random/linear_congruential_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/linear_congruential_engine.h'}}
+#include <__random/log2.h> // expected-error@*:* {{use of private header from outside its module: '__random/log2.h'}}
+#include <__random/lognormal_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/lognormal_distribution.h'}}
+#include <__random/mersenne_twister_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/mersenne_twister_engine.h'}}
+#include <__random/negative_binomial_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/negative_binomial_distribution.h'}}
+#include <__random/normal_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/normal_distribution.h'}}
+#include <__random/piecewise_constant_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/piecewise_constant_distribution.h'}}
+#include <__random/piecewise_linear_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/piecewise_linear_distribution.h'}}
+#include <__random/poisson_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/poisson_distribution.h'}}
+#include <__random/random_device.h> // expected-error@*:* {{use of private header from outside its module: '__random/random_device.h'}}
+#include <__random/ranlux.h> // expected-error@*:* {{use of private header from outside its module: '__random/ranlux.h'}}
+#include <__random/seed_seq.h> // expected-error@*:* {{use of private header from outside its module: '__random/seed_seq.h'}}
+#include <__random/shuffle_order_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/shuffle_order_engine.h'}}
+#include <__random/student_t_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/student_t_distribution.h'}}
+#include <__random/subtract_with_carry_engine.h> // expected-error@*:* {{use of private header from outside its module: '__random/subtract_with_carry_engine.h'}}
+#include <__random/uniform_int_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/uniform_int_distribution.h'}}
+#include <__random/uniform_random_bit_generator.h> // expected-error@*:* {{use of private header from outside its module: '__random/uniform_random_bit_generator.h'}}
+#include <__random/uniform_real_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/uniform_real_distribution.h'}}
+#include <__random/weibull_distribution.h> // expected-error@*:* {{use of private header from outside its module: '__random/weibull_distribution.h'}}
+#include <__ranges/access.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/access.h'}}
+#include <__ranges/all.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/all.h'}}
+#include <__ranges/as_rvalue_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/as_rvalue_view.h'}}
+#include <__ranges/common_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/common_view.h'}}
+#include <__ranges/concepts.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/concepts.h'}}
+#include <__ranges/copyable_box.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/copyable_box.h'}}
+#include <__ranges/counted.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/counted.h'}}
+#include <__ranges/dangling.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/dangling.h'}}
+#include <__ranges/data.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/data.h'}}
+#include <__ranges/drop_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/drop_view.h'}}
+#include <__ranges/drop_while_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/drop_while_view.h'}}
+#include <__ranges/elements_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/elements_view.h'}}
+#include <__ranges/empty.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/empty.h'}}
+#include <__ranges/empty_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/empty_view.h'}}
+#include <__ranges/enable_borrowed_range.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/enable_borrowed_range.h'}}
+#include <__ranges/enable_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/enable_view.h'}}
+#include <__ranges/filter_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/filter_view.h'}}
+#include <__ranges/iota_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/iota_view.h'}}
+#include <__ranges/istream_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/istream_view.h'}}
+#include <__ranges/join_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/join_view.h'}}
+#include <__ranges/lazy_split_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/lazy_split_view.h'}}
+#include <__ranges/non_propagating_cache.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/non_propagating_cache.h'}}
+#include <__ranges/owning_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/owning_view.h'}}
+#include <__ranges/range_adaptor.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/range_adaptor.h'}}
+#include <__ranges/rbegin.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/rbegin.h'}}
+#include <__ranges/ref_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/ref_view.h'}}
+#include <__ranges/rend.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/rend.h'}}
+#include <__ranges/reverse_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/reverse_view.h'}}
+#include <__ranges/single_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/single_view.h'}}
+#include <__ranges/size.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/size.h'}}
+#include <__ranges/split_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/split_view.h'}}
+#include <__ranges/subrange.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/subrange.h'}}
+#include <__ranges/take_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/take_view.h'}}
+#include <__ranges/take_while_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/take_while_view.h'}}
+#include <__ranges/transform_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/transform_view.h'}}
+#include <__ranges/view_interface.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/view_interface.h'}}
+#include <__ranges/views.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/views.h'}}
+#include <__ranges/zip_view.h> // expected-error@*:* {{use of private header from outside its module: '__ranges/zip_view.h'}}
+#include <__split_buffer> // expected-error@*:* {{use of private header from outside its module: '__split_buffer'}}
+#include <__std_stream> // expected-error@*:* {{use of private header from outside its module: '__std_stream'}}
+#include <__string/char_traits.h> // expected-error@*:* {{use of private header from outside its module: '__string/char_traits.h'}}
+#include <__string/extern_template_lists.h> // expected-error@*:* {{use of private header from outside its module: '__string/extern_template_lists.h'}}
+#include <__thread/poll_with_backoff.h> // expected-error@*:* {{use of private header from outside its module: '__thread/poll_with_backoff.h'}}
+#include <__thread/timed_backoff_policy.h> // expected-error@*:* {{use of private header from outside its module: '__thread/timed_backoff_policy.h'}}
+#include <__tuple_dir/apply_cv.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/apply_cv.h'}}
+#include <__tuple_dir/make_tuple_types.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/make_tuple_types.h'}}
+#include <__tuple_dir/pair_like.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/pair_like.h'}}
+#include <__tuple_dir/sfinae_helpers.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/sfinae_helpers.h'}}
+#include <__tuple_dir/tuple_element.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/tuple_element.h'}}
+#include <__tuple_dir/tuple_indices.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/tuple_indices.h'}}
+#include <__tuple_dir/tuple_like.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/tuple_like.h'}}
+#include <__tuple_dir/tuple_like_ext.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/tuple_like_ext.h'}}
+#include <__tuple_dir/tuple_size.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/tuple_size.h'}}
+#include <__tuple_dir/tuple_types.h> // expected-error@*:* {{use of private header from outside its module: '__tuple_dir/tuple_types.h'}}
+#include <__type_traits/add_const.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_const.h'}}
+#include <__type_traits/add_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_cv.h'}}
+#include <__type_traits/add_lvalue_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_lvalue_reference.h'}}
+#include <__type_traits/add_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_pointer.h'}}
+#include <__type_traits/add_rvalue_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_rvalue_reference.h'}}
+#include <__type_traits/add_volatile.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/add_volatile.h'}}
+#include <__type_traits/aligned_storage.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/aligned_storage.h'}}
+#include <__type_traits/aligned_union.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/aligned_union.h'}}
+#include <__type_traits/alignment_of.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/alignment_of.h'}}
+#include <__type_traits/apply_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/apply_cv.h'}}
+#include <__type_traits/can_extract_key.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/can_extract_key.h'}}
+#include <__type_traits/common_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/common_reference.h'}}
+#include <__type_traits/common_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/common_type.h'}}
+#include <__type_traits/conditional.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/conditional.h'}}
+#include <__type_traits/conjunction.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/conjunction.h'}}
+#include <__type_traits/copy_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/copy_cv.h'}}
+#include <__type_traits/copy_cvref.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/copy_cvref.h'}}
+#include <__type_traits/decay.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/decay.h'}}
+#include <__type_traits/dependent_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/dependent_type.h'}}
+#include <__type_traits/disjunction.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/disjunction.h'}}
+#include <__type_traits/enable_if.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/enable_if.h'}}
+#include <__type_traits/extent.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/extent.h'}}
+#include <__type_traits/has_unique_object_representation.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/has_unique_object_representation.h'}}
+#include <__type_traits/has_virtual_destructor.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/has_virtual_destructor.h'}}
+#include <__type_traits/integral_constant.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/integral_constant.h'}}
+#include <__type_traits/is_abstract.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_abstract.h'}}
+#include <__type_traits/is_aggregate.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_aggregate.h'}}
+#include <__type_traits/is_allocator.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_allocator.h'}}
+#include <__type_traits/is_always_bitcastable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_always_bitcastable.h'}}
+#include <__type_traits/is_arithmetic.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_arithmetic.h'}}
+#include <__type_traits/is_array.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_array.h'}}
+#include <__type_traits/is_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_assignable.h'}}
+#include <__type_traits/is_base_of.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_base_of.h'}}
+#include <__type_traits/is_bounded_array.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_bounded_array.h'}}
+#include <__type_traits/is_callable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_callable.h'}}
+#include <__type_traits/is_char_like_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_char_like_type.h'}}
+#include <__type_traits/is_class.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_class.h'}}
+#include <__type_traits/is_compound.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_compound.h'}}
+#include <__type_traits/is_const.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_const.h'}}
+#include <__type_traits/is_constant_evaluated.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_constant_evaluated.h'}}
+#include <__type_traits/is_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_constructible.h'}}
+#include <__type_traits/is_convertible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_convertible.h'}}
+#include <__type_traits/is_copy_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_copy_assignable.h'}}
+#include <__type_traits/is_copy_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_copy_constructible.h'}}
+#include <__type_traits/is_core_convertible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_core_convertible.h'}}
+#include <__type_traits/is_default_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_default_constructible.h'}}
+#include <__type_traits/is_destructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_destructible.h'}}
+#include <__type_traits/is_empty.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_empty.h'}}
+#include <__type_traits/is_enum.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_enum.h'}}
+#include <__type_traits/is_final.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_final.h'}}
+#include <__type_traits/is_floating_point.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_floating_point.h'}}
+#include <__type_traits/is_function.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_function.h'}}
+#include <__type_traits/is_fundamental.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_fundamental.h'}}
+#include <__type_traits/is_implicitly_default_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_implicitly_default_constructible.h'}}
+#include <__type_traits/is_integral.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_integral.h'}}
+#include <__type_traits/is_literal_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_literal_type.h'}}
+#include <__type_traits/is_member_function_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_member_function_pointer.h'}}
+#include <__type_traits/is_member_object_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_member_object_pointer.h'}}
+#include <__type_traits/is_member_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_member_pointer.h'}}
+#include <__type_traits/is_move_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_move_assignable.h'}}
+#include <__type_traits/is_move_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_move_constructible.h'}}
+#include <__type_traits/is_nothrow_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_assignable.h'}}
+#include <__type_traits/is_nothrow_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_constructible.h'}}
+#include <__type_traits/is_nothrow_convertible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_convertible.h'}}
+#include <__type_traits/is_nothrow_copy_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_copy_assignable.h'}}
+#include <__type_traits/is_nothrow_copy_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_copy_constructible.h'}}
+#include <__type_traits/is_nothrow_default_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_default_constructible.h'}}
+#include <__type_traits/is_nothrow_destructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_destructible.h'}}
+#include <__type_traits/is_nothrow_move_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_move_assignable.h'}}
+#include <__type_traits/is_nothrow_move_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_nothrow_move_constructible.h'}}
+#include <__type_traits/is_null_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_null_pointer.h'}}
+#include <__type_traits/is_object.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_object.h'}}
+#include <__type_traits/is_pod.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_pod.h'}}
+#include <__type_traits/is_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_pointer.h'}}
+#include <__type_traits/is_polymorphic.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_polymorphic.h'}}
+#include <__type_traits/is_primary_template.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_primary_template.h'}}
+#include <__type_traits/is_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_reference.h'}}
+#include <__type_traits/is_reference_wrapper.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_reference_wrapper.h'}}
+#include <__type_traits/is_referenceable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_referenceable.h'}}
+#include <__type_traits/is_same.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_same.h'}}
+#include <__type_traits/is_scalar.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_scalar.h'}}
+#include <__type_traits/is_scoped_enum.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_scoped_enum.h'}}
+#include <__type_traits/is_signed.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_signed.h'}}
+#include <__type_traits/is_signed_integer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_signed_integer.h'}}
+#include <__type_traits/is_specialization.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_specialization.h'}}
+#include <__type_traits/is_standard_layout.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_standard_layout.h'}}
+#include <__type_traits/is_swappable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_swappable.h'}}
+#include <__type_traits/is_trivial.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivial.h'}}
+#include <__type_traits/is_trivially_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_assignable.h'}}
+#include <__type_traits/is_trivially_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_constructible.h'}}
+#include <__type_traits/is_trivially_copy_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_copy_assignable.h'}}
+#include <__type_traits/is_trivially_copy_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_copy_constructible.h'}}
+#include <__type_traits/is_trivially_copyable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_copyable.h'}}
+#include <__type_traits/is_trivially_default_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_default_constructible.h'}}
+#include <__type_traits/is_trivially_destructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_destructible.h'}}
+#include <__type_traits/is_trivially_move_assignable.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_move_assignable.h'}}
+#include <__type_traits/is_trivially_move_constructible.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_trivially_move_constructible.h'}}
+#include <__type_traits/is_unbounded_array.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_unbounded_array.h'}}
+#include <__type_traits/is_union.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_union.h'}}
+#include <__type_traits/is_unsigned.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_unsigned.h'}}
+#include <__type_traits/is_unsigned_integer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_unsigned_integer.h'}}
+#include <__type_traits/is_valid_expansion.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_valid_expansion.h'}}
+#include <__type_traits/is_void.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_void.h'}}
+#include <__type_traits/is_volatile.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/is_volatile.h'}}
+#include <__type_traits/lazy.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/lazy.h'}}
+#include <__type_traits/make_32_64_or_128_bit.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_32_64_or_128_bit.h'}}
+#include <__type_traits/make_const_lvalue_ref.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_const_lvalue_ref.h'}}
+#include <__type_traits/make_signed.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_signed.h'}}
+#include <__type_traits/make_unsigned.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/make_unsigned.h'}}
+#include <__type_traits/maybe_const.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/maybe_const.h'}}
+#include <__type_traits/nat.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/nat.h'}}
+#include <__type_traits/negation.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/negation.h'}}
+#include <__type_traits/noexcept_move_assign_container.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/noexcept_move_assign_container.h'}}
+#include <__type_traits/promote.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/promote.h'}}
+#include <__type_traits/rank.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/rank.h'}}
+#include <__type_traits/remove_all_extents.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_all_extents.h'}}
+#include <__type_traits/remove_const.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_const.h'}}
+#include <__type_traits/remove_const_ref.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_const_ref.h'}}
+#include <__type_traits/remove_cv.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_cv.h'}}
+#include <__type_traits/remove_cvref.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_cvref.h'}}
+#include <__type_traits/remove_extent.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_extent.h'}}
+#include <__type_traits/remove_pointer.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_pointer.h'}}
+#include <__type_traits/remove_reference.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_reference.h'}}
+#include <__type_traits/remove_volatile.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/remove_volatile.h'}}
+#include <__type_traits/result_of.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/result_of.h'}}
+#include <__type_traits/strip_signature.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/strip_signature.h'}}
+#include <__type_traits/type_identity.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/type_identity.h'}}
+#include <__type_traits/type_list.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/type_list.h'}}
+#include <__type_traits/underlying_type.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/underlying_type.h'}}
+#include <__type_traits/void_t.h> // expected-error@*:* {{use of private header from outside its module: '__type_traits/void_t.h'}}
+#include <__utility/as_const.h> // expected-error@*:* {{use of private header from outside its module: '__utility/as_const.h'}}
+#include <__utility/auto_cast.h> // expected-error@*:* {{use of private header from outside its module: '__utility/auto_cast.h'}}
+#include <__utility/cmp.h> // expected-error@*:* {{use of private header from outside its module: '__utility/cmp.h'}}
+#include <__utility/convert_to_integral.h> // expected-error@*:* {{use of private header from outside its module: '__utility/convert_to_integral.h'}}
+#include <__utility/declval.h> // expected-error@*:* {{use of private header from outside its module: '__utility/declval.h'}}
+#include <__utility/exception_guard.h> // expected-error@*:* {{use of private header from outside its module: '__utility/exception_guard.h'}}
+#include <__utility/exchange.h> // expected-error@*:* {{use of private header from outside its module: '__utility/exchange.h'}}
+#include <__utility/forward.h> // expected-error@*:* {{use of private header from outside its module: '__utility/forward.h'}}
+#include <__utility/forward_like.h> // expected-error@*:* {{use of private header from outside its module: '__utility/forward_like.h'}}
+#include <__utility/in_place.h> // expected-error@*:* {{use of private header from outside its module: '__utility/in_place.h'}}
+#include <__utility/integer_sequence.h> // expected-error@*:* {{use of private header from outside its module: '__utility/integer_sequence.h'}}
+#include <__utility/move.h> // expected-error@*:* {{use of private header from outside its module: '__utility/move.h'}}
+#include <__utility/pair.h> // expected-error@*:* {{use of private header from outside its module: '__utility/pair.h'}}
+#include <__utility/piecewise_construct.h> // expected-error@*:* {{use of private header from outside its module: '__utility/piecewise_construct.h'}}
+#include <__utility/priority_tag.h> // expected-error@*:* {{use of private header from outside its module: '__utility/priority_tag.h'}}
+#include <__utility/rel_ops.h> // expected-error@*:* {{use of private header from outside its module: '__utility/rel_ops.h'}}
+#include <__utility/swap.h> // expected-error@*:* {{use of private header from outside its module: '__utility/swap.h'}}
+#include <__utility/to_underlying.h> // expected-error@*:* {{use of private header from outside its module: '__utility/to_underlying.h'}}
+#include <__utility/unreachable.h> // expected-error@*:* {{use of private header from outside its module: '__utility/unreachable.h'}}
+#include <__variant/monostate.h> // expected-error@*:* {{use of private header from outside its module: '__variant/monostate.h'}}
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.access/end.incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.access/end.incomplete_type.pass.cpp
new file mode 100644
index 0000000..12efa6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.access/end.incomplete_type.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the libc++-specific behavior that we handle the IFNDR case for ranges::end
+// by being SFINAE-friendly.
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+struct Incomplete;
+
+constexpr bool test()
+{
+    {
+    extern Incomplete bounded[10];
+    assert((!std::is_invocable_v<decltype(std::ranges::end), decltype((bounded))>));
+    assert((!std::is_invocable_v<decltype(std::ranges::cend), decltype((bounded))>));
+    assert((!std::is_invocable_v<decltype(std::ranges::end), decltype(std::as_const(bounded))>));
+    assert((!std::is_invocable_v<decltype(std::ranges::cend), decltype(std::as_const(bounded))>));
+    }
+    {
+    extern Incomplete unbounded[];
+    assert((!std::is_invocable_v<decltype(std::ranges::end), decltype((unbounded))>));
+    assert((!std::is_invocable_v<decltype(std::ranges::cend), decltype((unbounded))>));
+    assert((!std::is_invocable_v<decltype(std::ranges::end), decltype(std::as_const(unbounded))>));
+    assert((!std::is_invocable_v<decltype(std::ranges::cend), decltype(std::as_const(unbounded))>));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.all/all.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.all/all.nodiscard.verify.cpp
new file mode 100644
index 0000000..43b9ebf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.all/all.nodiscard.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the libc++ extension that std::views::all is marked as [[nodiscard]].
+
+#include <ranges>
+
+void test() {
+  int range[] = {1, 2, 3};
+
+  std::views::all(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  range | std::views::all; // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::views::all | std::views::all; // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.common.view/adaptor.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.common.view/adaptor.nodiscard.verify.cpp
new file mode 100644
index 0000000..bc9d9c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.common.view/adaptor.nodiscard.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the libc++ extension that std::views::common is marked as [[nodiscard]].
+
+#include <ranges>
+
+void test() {
+  int range[] = {1, 2, 3};
+
+  std::views::common(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  range | std::views::common; // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::views::all | std::views::common; // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/arrow.pass.cpp
new file mode 100644
index 0000000..e82840f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/arrow.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// T* <copyable-box>::operator->()
+// const T* <copyable-box>::operator->() const
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "types.h"
+
+template<class T>
+constexpr void check() {
+  // non-const version
+  {
+    std::ranges::__copyable_box<T> x(std::in_place, 10);
+    T* result = x.operator->();
+    static_assert(noexcept(x.operator->()));
+    assert(result->value == 10);
+    assert(x->value == 10);
+  }
+
+  // const version
+  {
+    std::ranges::__copyable_box<T> const x(std::in_place, 10);
+    const T* result = x.operator->();
+    static_assert(noexcept(x.operator->()));
+    assert(result->value == 10);
+    assert(x->value == 10);
+  }
+}
+
+constexpr bool test() {
+  check<CopyConstructible>(); // primary template
+  check<Copyable>(); // optimization #1
+  check<NothrowCopyConstructible>(); // optimization #2
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/assign.copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/assign.copy.pass.cpp
new file mode 100644
index 0000000..0f6806b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/assign.copy.pass.cpp
@@ -0,0 +1,168 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <copyable-box>& operator=(<copyable-box> const&)
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-self-assign-overloaded
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  // Test the primary template
+  {
+    using Box = std::ranges::__copyable_box<CopyConstructible>;
+    static_assert( std::is_copy_assignable_v<Box>);
+    static_assert(!std::is_nothrow_copy_assignable_v<Box>);
+
+    {
+      Box x(std::in_place, 5);
+      Box const y(std::in_place, 10);
+      Box& result = (x = y);
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+    }
+    // check self-assignment
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = x);
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+    }
+  }
+
+  // Test optimization #1 for copy-assignment
+  {
+    using Box = std::ranges::__copyable_box<Copyable>;
+    static_assert( std::is_copy_assignable_v<Box>);
+    static_assert(!std::is_nothrow_copy_assignable_v<Box>);
+
+    {
+      Box x(std::in_place, 5);
+      Box const y(std::in_place, 10);
+      Box& result = (x = y);
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+      assert((*x).did_copy_assign);
+    }
+    // check self-assignment (should use the underlying type's assignment too)
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = x);
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+      assert((*x).did_copy_assign);
+    }
+  }
+
+  // Test optimization #2 for copy-assignment
+  {
+    using Box = std::ranges::__copyable_box<NothrowCopyConstructible>;
+    static_assert(std::is_copy_assignable_v<Box>);
+    static_assert(std::is_nothrow_copy_assignable_v<Box>);
+
+    {
+      Box x(std::in_place, 5);
+      Box const y(std::in_place, 10);
+      Box& result = (x = y);
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+    }
+    // check self-assignment
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = x);
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+    }
+  }
+
+  return true;
+}
+
+// Tests for the empty state. Those can't be constexpr, since they are only reached
+// through throwing an exception.
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+void test_empty_state() {
+  using Box = std::ranges::__copyable_box<ThrowsOnCopy>;
+
+  // assign non-empty to empty
+  {
+    Box x = create_empty_box();
+    Box const y(std::in_place, 10);
+    Box& result = (x = y);
+
+    assert(&result == &x);
+    assert(x.__has_value());
+    assert(y.__has_value());
+    assert((*x).value == 10);
+  }
+  // assign empty to non-empty
+  {
+    Box x(std::in_place, 5);
+    Box const y = create_empty_box();
+    Box& result = (x = y);
+
+    assert(&result == &x);
+    assert(!x.__has_value());
+    assert(!y.__has_value());
+  }
+  // assign empty to empty
+  {
+    Box x = create_empty_box();
+    Box const y = create_empty_box();
+    Box& result = (x = y);
+
+    assert(&result == &x);
+    assert(!x.__has_value());
+    assert(!y.__has_value());
+  }
+  // check self-assignment in empty case
+  {
+    Box x = create_empty_box();
+    Box& result = (x = x);
+
+    assert(&result == &x);
+    assert(!x.__has_value());
+  }
+}
+#endif // !defined(TEST_HAS_NO_EXCEPTIONS)
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+  test_empty_state();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/assign.move.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/assign.move.pass.cpp
new file mode 100644
index 0000000..bb46401
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/assign.move.pass.cpp
@@ -0,0 +1,226 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <copyable-box>& operator=(<copyable-box>&&)
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-self-move
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  // Test the primary template
+  {
+    using Box = std::ranges::__copyable_box<CopyConstructible>;
+    static_assert( std::is_move_assignable_v<Box>);
+    static_assert(!std::is_nothrow_move_assignable_v<Box>);
+
+    {
+      Box x(std::in_place, 5);
+      Box y(std::in_place, 10);
+      Box& result = (x = std::move(y));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+    }
+    // check self-assignment
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = std::move(x));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+    }
+  }
+
+  // Make sure that we use the native move assignment in the primary template if we can.
+  {
+    using Box = std::ranges::__copyable_box<CopyConstructibleMovable>;
+    static_assert(std::is_move_assignable_v<Box>);
+    static_assert(std::is_nothrow_move_assignable_v<Box> == std::is_nothrow_move_assignable_v<CopyConstructibleMovable>);
+
+    {
+      Box x(std::in_place, 5);
+      Box y(std::in_place, 10);
+      Box& result = (x = std::move(y));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+      assert((*x).did_move_assign);
+    }
+    // check self-assignment
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = std::move(x));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+      assert((*x).did_move_assign);
+    }
+  }
+
+  // Test optimization #1 for move assignment
+  {
+    using Box = std::ranges::__copyable_box<Copyable>;
+    static_assert( std::is_move_assignable_v<Box>);
+    static_assert(!std::is_nothrow_move_assignable_v<Box>);
+
+    {
+      Box x(std::in_place, 5);
+      Box y(std::in_place, 10);
+      Box& result = (x = std::move(y));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+      assert((*x).did_move_assign);
+    }
+    // check self-assignment (should use the underlying type's assignment too)
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = std::move(x));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+      assert((*x).did_move_assign);
+    }
+  }
+
+  // Test optimization #1 for move assignment with a type that uses optimization #2 for copy assignment
+  {
+    using Box = std::ranges::__copyable_box<MovableNothrowCopyConstructible>;
+    static_assert(std::is_move_assignable_v<Box>);
+    static_assert(std::is_nothrow_move_assignable_v<Box> == std::is_nothrow_move_assignable_v<MovableNothrowCopyConstructible>);
+
+    {
+      Box x(std::in_place, 5);
+      Box y(std::in_place, 10);
+      Box& result = (x = std::move(y));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+      assert((*x).did_move_assign);
+    }
+    // check self-assignment (should use the underlying type's assignment too)
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = std::move(x));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+      assert((*x).did_move_assign);
+    }
+  }
+
+  // Test optimization #2 for move assignment
+  {
+    using Box = std::ranges::__copyable_box<NothrowCopyConstructible>;
+    static_assert(std::is_move_assignable_v<Box>);
+    static_assert(std::is_nothrow_move_assignable_v<Box>);
+
+    {
+      Box x(std::in_place, 5);
+      Box y(std::in_place, 10);
+      Box& result = (x = std::move(y));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert(y.__has_value());
+      assert((*x).value == 10);
+    }
+    // check self-assignment
+    {
+      Box x(std::in_place, 5);
+      Box& result = (x = std::move(x));
+
+      assert(&result == &x);
+      assert(x.__has_value());
+      assert((*x).value == 5);
+    }
+  }
+
+  return true;
+}
+
+// Tests for the empty state. Those can't be constexpr, since they are only reached
+// through throwing an exception.
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+void test_empty_state() {
+  using Box = std::ranges::__copyable_box<ThrowsOnCopy>;
+
+  // assign non-empty to empty
+  {
+    Box x = create_empty_box();
+    Box y(std::in_place, 10);
+    Box& result = (x = std::move(y));
+
+    assert(&result == &x);
+    assert(x.__has_value());
+    assert(y.__has_value());
+    assert((*x).value == 10);
+  }
+  // assign empty to non-empty
+  {
+    Box x(std::in_place, 5);
+    Box y = create_empty_box();
+    Box& result = (x = std::move(y));
+
+    assert(&result == &x);
+    assert(!x.__has_value());
+    assert(!y.__has_value());
+  }
+  // assign empty to empty
+  {
+    Box x = create_empty_box();
+    Box y = create_empty_box();
+    Box& result = (x = std::move(y));
+
+    assert(&result == &x);
+    assert(!x.__has_value());
+    assert(!y.__has_value());
+  }
+  // check self-assignment in empty case
+  {
+    Box x = create_empty_box();
+    Box& result = (x = std::move(x));
+
+    assert(&result == &x);
+    assert(!x.__has_value());
+  }
+}
+#endif // !defined(TEST_HAS_NO_EXCEPTIONS)
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+  test_empty_state();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/ctor.default.pass.cpp
new file mode 100644
index 0000000..c4d0957
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/ctor.default.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <copyable-box>::<copyable-box>()
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "types.h"
+
+template<class T>
+using Box = std::ranges::__copyable_box<T>;
+
+struct NoDefault {
+  NoDefault() = delete;
+};
+static_assert(!std::is_default_constructible_v<Box<NoDefault>>);
+
+template<bool Noexcept>
+struct DefaultNoexcept {
+  DefaultNoexcept() noexcept(Noexcept);
+};
+static_assert( std::is_nothrow_default_constructible_v<Box<DefaultNoexcept<true>>>);
+static_assert(!std::is_nothrow_default_constructible_v<Box<DefaultNoexcept<false>>>);
+
+constexpr bool test() {
+  // check primary template
+  {
+    Box<CopyConstructible> box;
+    assert(box.__has_value());
+    assert((*box).value == CopyConstructible().value);
+  }
+
+  // check optimization #1
+  {
+    Box<Copyable> box;
+    assert(box.__has_value());
+    assert((*box).value == Copyable().value);
+  }
+
+  // check optimization #2
+  {
+    Box<NothrowCopyConstructible> box;
+    assert(box.__has_value());
+    assert((*box).value == NothrowCopyConstructible().value);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/ctor.in_place.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/ctor.in_place.pass.cpp
new file mode 100644
index 0000000..767d7cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/ctor.in_place.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class ...Args>
+// explicit <copyable-box>::<copyable-box>(in_place_t, Args&& ...args);
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "types.h"
+
+struct UnknownType { };
+
+template<bool Noexcept>
+struct NothrowConstructible {
+  explicit NothrowConstructible(int) noexcept(Noexcept);
+};
+
+constexpr bool test() {
+  // Test the primary template
+  {
+    using Box = std::ranges::__copyable_box<CopyConstructible>;
+    Box x(std::in_place, 5);
+    assert((*x).value == 5);
+
+    static_assert(!std::is_constructible_v<Box, std::in_place_t, UnknownType>);
+  }
+
+  // Test optimization #1
+  {
+    using Box = std::ranges::__copyable_box<Copyable>;
+    Box x(std::in_place, 5);
+    assert((*x).value == 5);
+
+    static_assert(!std::is_constructible_v<Box, std::in_place_t, UnknownType>);
+  }
+
+  // Test optimization #2
+  {
+    using Box = std::ranges::__copyable_box<NothrowCopyConstructible>;
+    Box x(std::in_place, 5);
+    assert((*x).value == 5);
+
+    static_assert(!std::is_constructible_v<Box, std::in_place_t, UnknownType>);
+  }
+
+  static_assert( std::is_nothrow_constructible_v<std::ranges::__copyable_box<NothrowConstructible<true>>, std::in_place_t, int>);
+  static_assert(!std::is_nothrow_constructible_v<std::ranges::__copyable_box<NothrowConstructible<false>>, std::in_place_t, int>);
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/deref.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/deref.pass.cpp
new file mode 100644
index 0000000..075d578
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/deref.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// T& <copyable-box>::operator*()
+// T const& <copyable-box>::operator*() const
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "types.h"
+
+template<class T>
+constexpr void check() {
+  // non-const version
+  {
+    std::ranges::__copyable_box<T> x(std::in_place, 10);
+    T& result = *x;
+    static_assert(noexcept(*x));
+    assert(result.value == 10);
+  }
+
+  // const version
+  {
+    std::ranges::__copyable_box<T> const x(std::in_place, 10);
+    T const& result = *x;
+    static_assert(noexcept(*x));
+    assert(result.value == 10);
+  }
+}
+
+constexpr bool test() {
+  check<CopyConstructible>(); // primary template
+  check<Copyable>(); // optimization #1
+  check<NothrowCopyConstructible>(); // optimization #2
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/has_value.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/has_value.pass.cpp
new file mode 100644
index 0000000..aa68f23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/has_value.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// bool <copyable-box>::__has_value() const
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility> // in_place_t
+
+#include "types.h"
+
+template<class T>
+constexpr void check() {
+  std::ranges::__copyable_box<T> const x(std::in_place, 10);
+  assert(x.__has_value());
+}
+
+constexpr bool test() {
+  check<CopyConstructible>(); // primary template
+  check<Copyable>(); // optimization #1
+  check<NothrowCopyConstructible>(); // optimization #2
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+
+  // Tests for the empty state. Those can't be constexpr, since they are only reached
+  // through throwing an exception.
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+  {
+    std::ranges::__copyable_box<ThrowsOnCopy> x = create_empty_box();
+    assert(!x.__has_value());
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/no_unique_address.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/no_unique_address.pass.cpp
new file mode 100644
index 0000000..072527b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/no_unique_address.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test ensures that <copyable-box> behaves correctly when it holds an empty type.
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+
+bool copied = false;
+bool moved = false;
+
+struct Empty {
+  Empty() noexcept { }
+  Empty(Empty const&) noexcept { copied = true; }
+  Empty(Empty&&) noexcept { moved = true; }
+  Empty& operator=(Empty const&) = delete;
+  Empty& operator=(Empty&&) = delete;
+};
+
+using Box = std::ranges::__copyable_box<Empty>;
+
+struct Inherit : Box { };
+
+struct Hold : Box {
+  [[no_unique_address]] Inherit member;
+};
+
+int main(int, char**) {
+  Hold box;
+
+  Box& base = static_cast<Box&>(box);
+  Box& member = static_cast<Box&>(box.member);
+
+  // Despite [[no_unique_address]], the two objects have the same type so they
+  // can't share the same address.
+  assert(&base != &member);
+
+  // Make sure that we do perform the copy-construction, which wouldn't be the
+  // case if the two <copyable-box>s had the same address.
+  base = member;
+  assert(copied);
+
+  base = std::move(member);
+  assert(moved);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/properties.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/properties.compile.pass.cpp
new file mode 100644
index 0000000..0b9a050
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/properties.compile.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test various properties of <copyable-box>
+
+#include <ranges>
+
+#include <optional>
+
+#include "types.h"
+
+template <class T>
+constexpr bool valid_copyable_box = requires {
+  typename std::ranges::__copyable_box<T>;
+};
+
+struct NotCopyConstructible {
+  NotCopyConstructible() = default;
+  NotCopyConstructible(NotCopyConstructible&&) = default;
+  NotCopyConstructible(NotCopyConstructible const&) = delete;
+  NotCopyConstructible& operator=(NotCopyConstructible&&) = default;
+  NotCopyConstructible& operator=(NotCopyConstructible const&) = default;
+};
+
+static_assert(!valid_copyable_box<void>); // not an object type
+static_assert(!valid_copyable_box<int&>); // not an object type
+static_assert(!valid_copyable_box<NotCopyConstructible>);
+
+// primary template
+static_assert(sizeof(std::ranges::__copyable_box<CopyConstructible>) == sizeof(std::optional<CopyConstructible>));
+
+// optimization #1
+static_assert(sizeof(std::ranges::__copyable_box<Copyable>) == sizeof(Copyable));
+static_assert(alignof(std::ranges::__copyable_box<Copyable>) == alignof(Copyable));
+
+// optimization #2
+static_assert(sizeof(std::ranges::__copyable_box<NothrowCopyConstructible>) == sizeof(NothrowCopyConstructible));
+static_assert(alignof(std::ranges::__copyable_box<NothrowCopyConstructible>) == alignof(NothrowCopyConstructible));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/types.h b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/types.h
new file mode 100644
index 0000000..bcc3493
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.copy.wrap/types.h
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_LIBCXX_RANGES_RANGE_ADAPTORS_RANGE_COPY_WRAP_TYPES_H
+#define TEST_LIBCXX_RANGES_RANGE_ADAPTORS_RANGE_COPY_WRAP_TYPES_H
+
+#include <ranges>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// NOTE: These types are strongly tied to the implementation of __copyable_box. See the documentation
+//       in __copyable_box for the meaning of optimizations #1 and #2.
+
+// Copy constructible, but neither copyable nor nothrow_copy/move_constructible. This uses the primary template.
+struct CopyConstructible {
+  constexpr CopyConstructible() = default;
+  constexpr explicit CopyConstructible(int x) : value(x) { }
+  CopyConstructible(CopyConstructible const&) noexcept(false) = default;
+  CopyConstructible& operator=(CopyConstructible const&) = delete;
+
+  int value = -1;
+};
+static_assert(!std::copyable<CopyConstructible>);
+static_assert(!std::is_nothrow_copy_constructible_v<CopyConstructible>);
+static_assert(!std::movable<CopyConstructible>);
+static_assert(!std::is_nothrow_move_constructible_v<CopyConstructible>);
+
+
+// Copy constructible and movable, but not copyable. This uses the primary template, however we're
+// still able to use the native move-assignment operator in this case.
+struct CopyConstructibleMovable {
+  constexpr CopyConstructibleMovable() = default;
+  constexpr explicit CopyConstructibleMovable(int x) : value(x) { }
+  CopyConstructibleMovable(CopyConstructibleMovable const&) noexcept(false) = default;
+  CopyConstructibleMovable(CopyConstructibleMovable&&) noexcept(false) = default;
+  CopyConstructibleMovable& operator=(CopyConstructibleMovable const&) = delete;
+
+  constexpr CopyConstructibleMovable& operator=(CopyConstructibleMovable&& other) {
+    value = other.value;
+    did_move_assign = true;
+    return *this;
+  }
+
+  int value = -1;
+  bool did_move_assign = false;
+};
+
+
+// Copyable type that is not nothrow_copy/move_constructible.
+// This triggers optimization #1 for the copy assignment and the move assignment.
+struct Copyable {
+  constexpr Copyable() = default;
+  constexpr explicit Copyable(int x) : value(x) { }
+  Copyable(Copyable const&) noexcept(false) = default;
+
+  constexpr Copyable& operator=(Copyable const& other) noexcept(false) {
+    value = other.value;
+    did_copy_assign = true;
+    return *this;
+  }
+
+  constexpr Copyable& operator=(Copyable&& other) noexcept(false) {
+    value = other.value;
+    did_move_assign = true;
+    return *this;
+  }
+
+  int value = -1;
+  bool did_copy_assign = false;
+  bool did_move_assign = false;
+};
+static_assert( std::copyable<Copyable>);
+static_assert(!std::is_nothrow_copy_constructible_v<Copyable>);
+static_assert( std::movable<Copyable>);
+static_assert(!std::is_nothrow_move_constructible_v<Copyable>);
+
+
+// Non-copyable type that is nothrow_copy_constructible and nothrow_move_constructible.
+// This triggers optimization #2 for the copy assignment and the move assignment.
+struct NothrowCopyConstructible {
+  constexpr NothrowCopyConstructible() = default;
+  constexpr explicit NothrowCopyConstructible(int x) : value(x) { }
+  NothrowCopyConstructible(NothrowCopyConstructible const&) noexcept = default;
+  NothrowCopyConstructible(NothrowCopyConstructible&&) noexcept = default;
+  NothrowCopyConstructible& operator=(NothrowCopyConstructible const&) = delete;
+
+  int value = -1;
+};
+static_assert(!std::copyable<NothrowCopyConstructible>);
+static_assert( std::is_nothrow_copy_constructible_v<NothrowCopyConstructible>);
+static_assert(!std::movable<NothrowCopyConstructible>);
+static_assert( std::is_nothrow_move_constructible_v<NothrowCopyConstructible>);
+
+
+// Non-copyable type that is nothrow_copy_constructible, and that is movable but NOT nothrow_move_constructible.
+// This triggers optimization #2 for the copy assignment, and optimization #1 for the move assignment.
+struct MovableNothrowCopyConstructible {
+  constexpr MovableNothrowCopyConstructible() = default;
+  constexpr explicit MovableNothrowCopyConstructible(int x) : value(x) { }
+  MovableNothrowCopyConstructible(MovableNothrowCopyConstructible const&) noexcept = default;
+  MovableNothrowCopyConstructible(MovableNothrowCopyConstructible&&) noexcept(false) = default;
+  constexpr MovableNothrowCopyConstructible& operator=(MovableNothrowCopyConstructible&& other) {
+    value = other.value;
+    did_move_assign = true;
+    return *this;
+  }
+
+  int value = -1;
+  bool did_move_assign = false;
+};
+static_assert(!std::copyable<MovableNothrowCopyConstructible>);
+static_assert( std::is_nothrow_copy_constructible_v<MovableNothrowCopyConstructible>);
+static_assert( std::movable<MovableNothrowCopyConstructible>);
+static_assert(!std::is_nothrow_move_constructible_v<MovableNothrowCopyConstructible>);
+
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+// A type that we can make throw when copied from. This is used to create a
+// copyable-box in the empty state.
+static constexpr int THROW_WHEN_COPIED_FROM = 999;
+struct ThrowsOnCopy {
+  constexpr ThrowsOnCopy() = default;
+  constexpr explicit ThrowsOnCopy(int x) : value(x) { }
+  ThrowsOnCopy(ThrowsOnCopy const& other) {
+    if (other.value == THROW_WHEN_COPIED_FROM) throw 0;
+    else                                       value = other.value;
+  }
+
+  ThrowsOnCopy& operator=(ThrowsOnCopy const&) = delete; // prevent from being copyable
+
+  int value = -1;
+};
+
+// Creates an empty box. The only way to do that is to try assigning one box
+// to another and have that fail due to an exception when calling the copy
+// constructor. The assigned-to box will then be in the empty state.
+inline std::ranges::__copyable_box<ThrowsOnCopy> create_empty_box() {
+  std::ranges::__copyable_box<ThrowsOnCopy> box1;
+  std::ranges::__copyable_box<ThrowsOnCopy> box2(std::in_place, THROW_WHEN_COPIED_FROM);
+  try {
+    box1 = box2; // throws during assignment, which is implemented as a call to the copy ctor
+  } catch (...) {
+    // now, box1 is empty
+    assert(!box1.__has_value());
+    return box1;
+  }
+  assert(false && "should never be reached");
+  return box1; // to silence warning about missing return in non-void function
+}
+#endif // !defined(TEST_HAS_NO_EXCEPTIONS)
+
+#endif // TEST_LIBCXX_RANGES_RANGE_ADAPTORS_RANGE_COPY_WRAP_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.counted/adaptor.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.counted/adaptor.nodiscard.verify.cpp
new file mode 100644
index 0000000..bd9b158
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.counted/adaptor.nodiscard.verify.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the libc++ extension that std::views::counted is marked as [[nodiscard]].
+
+#include <ranges>
+
+void test() {
+  int range[] = {1, 2, 3};
+
+  std::views::counted(range, 1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.drop.while/assert.begin.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.drop.while/assert.begin.pass.cpp
new file mode 100644
index 0000000..e9cd574
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.drop.while/assert.begin.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ranges>
+
+// Call begin() on drop_while_view with empty predicate
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-exceptions
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <ranges>
+
+#include "check_assertion.h"
+
+struct Exception {};
+struct ThrowOnCopyPred {
+  ThrowOnCopyPred() = default;
+  ThrowOnCopyPred(const ThrowOnCopyPred&) { throw Exception{}; }
+  ThrowOnCopyPred& operator=(const ThrowOnCopyPred&) = delete;
+
+  ThrowOnCopyPred(ThrowOnCopyPred&&)            = default;
+  ThrowOnCopyPred& operator=(ThrowOnCopyPred&&) = default;
+
+  bool operator()(int) const { return false; }
+};
+
+int main(int, char**) {
+  int input[] = {1, 2, 3};
+  auto v1     = std::views::drop_while(input, ThrowOnCopyPred{});
+  auto v2     = std::views::drop_while(input, ThrowOnCopyPred{});
+  try {
+    v1 = v2;
+  } catch (...) {
+  }
+  TEST_LIBCPP_ASSERT_FAILURE(
+      v1.begin(),
+      "drop_while_view needs to have a non-empty predicate before calling begin() -- did a "
+      "previous assignment to this drop_while_view fail?");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.elements/elements_view.no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.elements/elements_view.no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..6901745
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.elements/elements_view.no_unique_address.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// Test the libc++ extension that the base view stored in `std::ranges::elements_view`
+// has been marked as _LIBCPP_NO_UNIQUE_ADDRESS
+
+#include <ranges>
+#include <tuple>
+
+
+struct EmptyView : std::ranges::view_base {
+  std::tuple<int>* begin() const;
+  std::tuple<int>* end() const;
+};
+
+using ElementsView = std::ranges::elements_view<EmptyView, 0>;
+
+struct TestClass {
+  [[no_unique_address]] ElementsView view;
+  int i;
+};
+
+static_assert(sizeof(TestClass) == sizeof(int));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.elements/sentinel.no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.elements/sentinel.no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..2e69a32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.elements/sentinel.no_unique_address.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// Test the libc++ extension that the sentinel stored in `std::ranges::elements_view::__sentinel`
+// has been marked as _LIBCPP_NO_UNIQUE_ADDRESS
+
+#include <ranges>
+#include <tuple>
+
+struct EmptySentinel {
+  friend bool operator==(std::tuple<int>* iter, EmptySentinel) { return iter; }
+};
+
+struct Range : std::ranges::view_base {
+  std::tuple<int>* begin() const;
+  EmptySentinel end() const;
+};
+
+using ElementsView = std::ranges::elements_view<Range, 0>;
+using ElementsSent = std::ranges::sentinel_t<ElementsView>;
+
+struct TestClass {
+  [[no_unique_address]] ElementsSent s;
+  int i;
+};
+
+static_assert(sizeof(TestClass) == sizeof(int));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..37cd715
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/no_unique_address.compile.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// class lazy_split_view {
+//   _LIBCPP_NO_UNIQUE_ADDRESS _View __base_ = _View();
+//   _LIBCPP_NO_UNIQUE_ADDRESS _Pattern __pattern_ = _Pattern();
+// };
+
+#include <ranges>
+
+#include <string_view>
+#include "test_iterators.h"
+
+// Verify the optimization that, if `View` is a forward range, the `lazy_split_view` itself doesn't store the `current`
+// iterator (instead, it's stored in the `outer-iterator`).
+//
+// Note that the Standard marks all data members of `lazy_split_view` as "exposition only", so this test has to be
+// libc++-specific.
+namespace test1 {
+
+  using SplitView = std::ranges::lazy_split_view<std::string_view, std::string_view>;
+  // The `lazy_split_view` only stores the `View` and the `Pattern`, not an iterator.
+  static_assert(sizeof(SplitView) == sizeof(std::string_view) * 2);
+
+} // namespace test1
+
+// Verify the optimization that, if `View` is an input range, the `outer-iterator` doesn't store the `current` iterator
+// (instead, it's stored in the `lazy_split_view` itself).
+//
+// Note that the Standard marks all data members of `outer-iterator` as "exposition only", so this test has to be
+// libc++-specific.
+namespace test2 {
+
+  struct InputView : std::ranges::view_base {
+    int x;
+    cpp20_input_iterator<int*> begin() const;
+    sentinel_wrapper<cpp20_input_iterator<int*>> end() const;
+  };
+  static_assert( std::ranges::input_range<InputView>);
+  static_assert(!std::ranges::forward_range<InputView>);
+  static_assert( std::ranges::view<InputView>);
+
+  struct TinyView : std::ranges::view_base {
+    int x;
+    int* begin() const;
+    int* end() const;
+    constexpr static size_t size() { return 1; }
+  };
+  static_assert( std::ranges::forward_range<TinyView>);
+  static_assert( std::ranges::__tiny_range<TinyView>);
+  static_assert( std::ranges::view<TinyView>);
+
+  using SplitView = std::ranges::lazy_split_view<InputView, TinyView>;
+  using OuterIter = std::ranges::iterator_t<SplitView>;
+  // The `outer-iterator` only stores a pointer to the parent and a boolean (aligned to the size of a pointer), not an
+  // iterator.
+  static_assert(sizeof(OuterIter) == sizeof(void*) * 2);
+
+} // namespace test2
+
+// Verify the libc++-specific optimization that empty `View` and `Pattern` use the `[[no_unique_address]]` attribute.
+// Both `View` and `Pattern` are forward views.
+namespace test3 {
+
+  struct EmptyView1 : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+  };
+  static_assert( std::ranges::forward_range<EmptyView1>);
+  static_assert( std::ranges::view<EmptyView1>);
+
+  // Note: it's important to inherit `EmptyView1` and `EmptyView2` from different bases, otherwise they still cannot share
+  // the same address regardless of whether `[[no_unique_address]]` is used.
+  struct EmptyView2 : std::ranges::view_interface<EmptyView2> {
+    int* begin() const;
+    int* end() const;
+  };
+  static_assert( std::ranges::forward_range<EmptyView2>);
+  static_assert( std::ranges::view<EmptyView2>);
+
+  static_assert(sizeof(std::ranges::lazy_split_view<EmptyView1, EmptyView2>) == 1);
+
+} // namespace test3
+
+// Verify the libc++-specific optimization that empty `View` and `Pattern` use the `[[no_unique_address]]` attribute.
+// `View` is an input view and `Pattern` is a tiny view.
+namespace test4 {
+
+  struct EmptyInputView : std::ranges::view_base {
+    cpp20_input_iterator<int*> begin() const;
+    sentinel_wrapper<cpp20_input_iterator<int*>> end() const;
+  };
+  static_assert( std::ranges::input_range<EmptyInputView>);
+  static_assert(!std::ranges::forward_range<EmptyInputView>);
+  static_assert( std::ranges::view<EmptyInputView>);
+
+  struct EmptyTinyView : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+    constexpr static size_t size() { return 1; }
+  };
+  static_assert( std::ranges::forward_range<EmptyTinyView>);
+  static_assert( std::ranges::__tiny_range<EmptyTinyView>);
+  static_assert( std::ranges::view<EmptyTinyView>);
+
+  static_assert(sizeof(std::ranges::lazy_split_view<EmptyInputView, EmptyTinyView>) ==
+      sizeof(std::ranges::__non_propagating_cache<std::ranges::iterator_t<EmptyInputView>>));
+
+} // namespace test4
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/assert.equal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/assert.equal.pass.cpp
new file mode 100644
index 0000000..31cef70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/assert.equal.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, !libcpp-has-debug-mode
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <ranges>
+
+// friend constexpr bool operator==(const inner-iterator& x, default_sentinel_t);
+//
+// Can't compare a default-constructed `inner-iterator` with the default sentinel.
+
+#include <ranges>
+
+#include "check_assertion.h"
+#include "../types.h"
+
+int main(int, char**) {
+  {
+    InnerIterForward i;
+    TEST_LIBCPP_ASSERT_FAILURE(i == std::default_sentinel, "Cannot call comparison on a default-constructed iterator.");
+  }
+
+  {
+    InnerIterInput i;
+    TEST_LIBCPP_ASSERT_FAILURE(i == std::default_sentinel, "Cannot call comparison on a default-constructed iterator.");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/assert.equal.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/assert.equal.pass.cpp
new file mode 100644
index 0000000..59e798f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/assert.equal.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, !libcpp-has-debug-mode
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <ranges>
+
+// friend constexpr bool operator==(const inner-iterator& x, default_sentinel_t);
+//
+// Can't compare a default-constructed `inner-iterator` with the default sentinel.
+
+#include <ranges>
+
+#include "check_assertion.h"
+#include "../types.h"
+
+int main(int, char**) {
+  {
+    OuterIterForward i;
+    TEST_LIBCPP_ASSERT_FAILURE(i == std::default_sentinel, "Cannot call comparison on a default-constructed iterator.");
+  }
+
+  {
+    OuterIterInput i;
+    TEST_LIBCPP_ASSERT_FAILURE(i == std::default_sentinel, "Cannot call comparison on a default-constructed iterator.");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/types.h b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/types.h
new file mode 100644
index 0000000..a66b378
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.lazy.split/types.h
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_LIBCXX_RANGES_RANGE_ADAPTORS_RANGE_LAZY_SPLIT_TYPES_H
+#define TEST_LIBCXX_RANGES_RANGE_ADAPTORS_RANGE_LAZY_SPLIT_TYPES_H
+
+#include <concepts>
+#include <ranges>
+#include <string_view>
+#include "test_iterators.h"
+
+// ForwardView
+
+struct ForwardView : std::ranges::view_base {
+  constexpr explicit ForwardView() = default;
+  constexpr ForwardView(ForwardView&&) = default;
+  constexpr ForwardView& operator=(ForwardView&&) = default;
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(nullptr); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(nullptr); }
+};
+static_assert( std::ranges::forward_range<ForwardView>);
+static_assert( std::ranges::forward_range<const ForwardView>);
+static_assert( std::ranges::view<ForwardView>);
+static_assert(!std::is_copy_constructible_v<ForwardView>);
+
+// InputView
+
+struct InputView : std::ranges::view_base {
+  constexpr InputView() = default;
+
+  constexpr cpp20_input_iterator<char*> begin() { return cpp20_input_iterator<char*>(nullptr); }
+  constexpr sentinel_wrapper<cpp20_input_iterator<char*>> end() {
+    return sentinel_wrapper(cpp20_input_iterator<char*>(nullptr));
+  }
+  constexpr cpp20_input_iterator<const char*> begin() const { return cpp20_input_iterator<const char*>(nullptr); }
+  constexpr sentinel_wrapper<cpp20_input_iterator<const char*>> end() const {
+    return sentinel_wrapper(cpp20_input_iterator<const char*>(nullptr));
+  }
+};
+
+static_assert(std::ranges::input_range<InputView>);
+static_assert(std::ranges::input_range<const InputView>);
+static_assert(std::ranges::view<InputView>);
+
+// ForwardTinyView
+
+struct ForwardTinyView : std::ranges::view_base {
+  constexpr ForwardTinyView() = default;
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(nullptr); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(nullptr); }
+  constexpr static size_t size() { return 1; }
+};
+static_assert(std::ranges::forward_range<ForwardTinyView>);
+static_assert(std::ranges::view<ForwardTinyView>);
+LIBCPP_STATIC_ASSERT(std::ranges::__tiny_range<ForwardTinyView>);
+
+// Aliases
+
+using SplitViewForward = std::ranges::lazy_split_view<ForwardView, ForwardView>;
+using OuterIterForward = std::ranges::iterator_t<SplitViewForward>;
+using InnerIterForward = std::ranges::iterator_t<OuterIterForward::value_type>;
+
+using SplitViewInput = std::ranges::lazy_split_view<InputView, ForwardTinyView>;
+using OuterIterInput = std::ranges::iterator_t<SplitViewInput>;
+using InnerIterInput = std::ranges::iterator_t<OuterIterInput::value_type>;
+
+#endif // TEST_LIBCXX_RANGES_RANGE_ADAPTORS_RANGE_LAZY_SPLIT_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.reverse/adaptor.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.reverse/adaptor.nodiscard.verify.cpp
new file mode 100644
index 0000000..2f7eb94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.reverse/adaptor.nodiscard.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the libc++ extension that std::views::reverse is marked as [[nodiscard]].
+
+#include <ranges>
+
+void test() {
+  int range[] = {1, 2, 3};
+
+  std::views::reverse(range); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  range | std::views::reverse; // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::views::all | std::views::reverse; // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.split/no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.split/no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..c04dbd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.split/no_unique_address.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// class split_view {
+//   _LIBCPP_NO_UNIQUE_ADDRESS _View __base_ = _View();
+//   _LIBCPP_NO_UNIQUE_ADDRESS _Pattern __pattern_ = _Pattern();
+// };
+
+#include <ranges>
+
+#include "test_iterators.h"
+
+struct EmptyView : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+using SplitView = std::ranges::split_view<EmptyView, EmptyView>;
+static_assert(sizeof(SplitView) == sizeof(std::ranges::__non_propagating_cache<std::ranges::subrange<int*>>));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.transform/adaptor.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.transform/adaptor.nodiscard.verify.cpp
new file mode 100644
index 0000000..0a5fbf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.adaptors/range.transform/adaptor.nodiscard.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the libc++ extension that std::views::transform is marked as [[nodiscard]].
+
+#include <ranges>
+
+void test() {
+  int range[] = {1, 2, 3};
+  auto f = [](int i) { return i; };
+
+  std::views::transform(f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::views::transform(range, f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  range | std::views::transform(f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  std::views::all | std::views::transform(f); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.factories/range.istream.view/no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.factories/range.istream.view/no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..f2fd2d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.factories/range.istream.view/no_unique_address.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// Test the libc++ extension that the value stored in `std::ranges::istream_view` has been marked
+// as _LIBCPP_NO_UNIQUE_ADDRESS
+
+#include <istream>
+#include <ranges>
+
+struct Empty {
+  friend std::istream& operator>>(std::istream& i, Empty const&) { return i; }
+};
+
+static_assert(sizeof(std::ranges::istream_view<Empty>) == sizeof(void*));
+
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/assign.copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/assign.copy.pass.cpp
new file mode 100644
index 0000000..598aeb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/assign.copy.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// __non_propagating_cache& operator=(__non_propagating_cache const&);
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-self-assign
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+template<bool NoexceptCopy>
+struct CopyAssignable {
+  int x;
+  constexpr explicit CopyAssignable(int i) : x(i) { }
+  CopyAssignable(CopyAssignable const&) = default;
+  constexpr CopyAssignable& operator=(CopyAssignable const& other) noexcept(NoexceptCopy) {
+    x = other.x;
+    return *this;
+  }
+  constexpr bool operator==(CopyAssignable const& other) const { return x == other.x; }
+};
+
+struct NotCopyAssignable {
+  int x;
+  constexpr explicit NotCopyAssignable(int i) : x(i) { }
+  NotCopyAssignable(NotCopyAssignable const&) = default;
+  NotCopyAssignable& operator=(NotCopyAssignable const&) = delete;
+  constexpr bool operator==(NotCopyAssignable const& other) const { return x == other.x; }
+};
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+  static_assert(std::is_nothrow_copy_assignable_v<Cache>);
+
+  // Assign to an empty cache
+  {
+    Cache a; a.__emplace(3);
+    Cache b;
+
+    Cache& result = (b = a);
+    assert(&result == &b);
+    assert(!b.__has_value()); // make sure we don't propagate
+
+    assert(a.__has_value()); // make sure we don't "steal" from the source
+    assert(*a == T{3});      //
+  }
+
+  // Assign to a non-empty cache
+  {
+    Cache a; a.__emplace(3);
+    Cache b; b.__emplace(5);
+
+    Cache& result = (b = a);
+    assert(&result == &b);
+    assert(!b.__has_value()); // make sure we don't propagate
+
+    assert(a.__has_value()); // make sure we don't "steal" from the source
+    assert(*a == T{3});      //
+  }
+
+  // Self-assignment should not do anything (case with empty cache)
+  {
+    Cache b;
+    Cache& result = (b = b);
+    assert(&result == &b);
+    assert(!b.__has_value());
+  }
+
+  // Self-assignment should not do anything (case with non-empty cache)
+  {
+    Cache b; b.__emplace(5);
+    Cache& result = (b = b);
+    assert(&result == &b);
+    assert(b.__has_value());
+    assert(*b == T{5});
+  }
+}
+
+constexpr bool tests() {
+  test<CopyAssignable<true>>();
+  test<CopyAssignable<false>>();
+  test<NotCopyAssignable>();
+  test<int>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/assign.move.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/assign.move.pass.cpp
new file mode 100644
index 0000000..84fc092
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/assign.move.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// __non_propagating_cache& operator=(__non_propagating_cache&&);
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-self-assign
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+template<bool NoexceptMove>
+struct MoveAssignable {
+  int x;
+  constexpr explicit MoveAssignable(int i) : x(i) { }
+  MoveAssignable(MoveAssignable&&) = default;
+  constexpr MoveAssignable& operator=(MoveAssignable&& other) noexcept(NoexceptMove) {
+    x = other.x;
+    other.x = -1;
+    return *this;
+  }
+};
+
+struct NotMoveAssignable {
+  int x;
+  constexpr explicit NotMoveAssignable(int i) : x(i) { }
+  NotMoveAssignable(NotMoveAssignable&&) = default;
+  NotMoveAssignable& operator=(NotMoveAssignable&&) = delete;
+};
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+  static_assert(std::is_nothrow_move_assignable_v<Cache>);
+
+  // Assign to an empty cache
+  {
+    Cache a; a.__emplace(3);
+    Cache b;
+
+    Cache& result = (b = std::move(a));
+    assert(&result == &b);
+    assert(!b.__has_value()); // make sure we don't propagate
+    assert(!a.__has_value()); // make sure we disengage the source
+  }
+
+  // Assign to a non-empty cache
+  {
+    Cache a; a.__emplace(3);
+    Cache b; b.__emplace(5);
+
+    Cache& result = (b = std::move(a));
+    assert(&result == &b);
+    assert(!b.__has_value()); // make sure we don't propagate
+    assert(!a.__has_value()); // make sure we disengage the source
+  }
+
+  // Self-assignment should clear the cache (case with empty cache)
+  {
+    Cache b;
+
+    Cache& result = (b = std::move(b));
+    assert(&result == &b);
+    assert(!b.__has_value());
+  }
+
+  // Self-assignment should clear the cache (case with non-empty cache)
+  {
+    Cache b; b.__emplace(5);
+
+    Cache& result = (b = std::move(b));
+    assert(&result == &b);
+    assert(!b.__has_value());
+  }
+}
+
+constexpr bool tests() {
+  test<MoveAssignable<true>>();
+  test<MoveAssignable<false>>();
+  test<NotMoveAssignable>();
+  test<int>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/constraints.compile.pass.cpp
new file mode 100644
index 0000000..407b9df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/constraints.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//  requires is_object_v<T>
+// class non-propagating-cache;
+
+#include <ranges>
+
+template<template<class...> class T, class ...Args>
+concept well_formed = requires {
+  typename T<Args...>;
+};
+
+struct T { };
+static_assert( well_formed<std::ranges::__non_propagating_cache, int>);
+static_assert( well_formed<std::ranges::__non_propagating_cache, T>);
+static_assert( well_formed<std::ranges::__non_propagating_cache, void (*)()>);
+static_assert(!well_formed<std::ranges::__non_propagating_cache, void>);
+static_assert(!well_formed<std::ranges::__non_propagating_cache, T&>);
+static_assert(!well_formed<std::ranges::__non_propagating_cache, void()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.copy.pass.cpp
new file mode 100644
index 0000000..e20c32d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.copy.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// __non_propagating_cache(__non_propagating_cache const&);
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+
+template<bool NoexceptCopy>
+struct CopyConstructible {
+  int x;
+  constexpr explicit CopyConstructible(int i) : x(i) { }
+  constexpr CopyConstructible(CopyConstructible const& other) noexcept(NoexceptCopy) : x(other.x) { }
+  CopyConstructible& operator=(CopyConstructible const&) = default;
+  constexpr bool operator==(CopyConstructible const& other) const { return x == other.x; }
+};
+
+struct NotCopyConstructible {
+  int x;
+  constexpr explicit NotCopyConstructible(int i) : x(i) { }
+  NotCopyConstructible(NotCopyConstructible const&) = delete;
+  NotCopyConstructible(NotCopyConstructible&&) = default;
+  constexpr bool operator==(NotCopyConstructible const& other) const { return x == other.x; }
+};
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+  static_assert(std::is_nothrow_copy_constructible_v<Cache>);
+  Cache a;
+  a.__emplace(3);
+
+  // Test with direct initialization
+  {
+    Cache b(a);
+    assert(!b.__has_value()); // make sure we don't propagate
+
+    assert(a.__has_value()); // make sure we don't "steal" from the source
+    assert(*a == T{3});      //
+  }
+
+  // Test with copy initialization
+  {
+    Cache b = a;
+    assert(!b.__has_value()); // make sure we don't propagate
+
+    assert(a.__has_value()); // make sure we don't "steal" from the source
+    assert(*a == T{3});      //
+  }
+}
+
+constexpr bool tests() {
+  test<CopyConstructible<true>>();
+  test<CopyConstructible<false>>();
+  test<NotCopyConstructible>();
+  test<int>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.default.pass.cpp
new file mode 100644
index 0000000..109e487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.default.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// __non_propagating_cache();
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+
+struct HasDefault { HasDefault() = default; };
+struct NoDefault { NoDefault() = delete; };
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+  static_assert(std::is_nothrow_default_constructible_v<Cache>);
+  Cache cache;
+  assert(!cache.__has_value());
+}
+
+constexpr bool tests() {
+  test<HasDefault>();
+  test<NoDefault>();
+  test<int>();
+  test<char*>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.move.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.move.pass.cpp
new file mode 100644
index 0000000..6070130
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/ctor.move.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// __non_propagating_cache(__non_propagating_cache&&);
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+template<bool NoexceptMove>
+struct MoveConstructible {
+  int x;
+  constexpr explicit MoveConstructible(int i) : x(i) { }
+  constexpr MoveConstructible(MoveConstructible&& other) noexcept(NoexceptMove) : x(other.x) { other.x = -1; }
+  MoveConstructible& operator=(MoveConstructible&&) = default;
+};
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+  static_assert(std::is_nothrow_move_constructible_v<Cache>);
+
+  // Test with direct initialization
+  {
+    Cache a;
+    a.__emplace(3);
+
+    Cache b(std::move(a));
+    assert(!b.__has_value()); // make sure we don't propagate
+    assert(!a.__has_value()); // make sure we disengage the source
+  }
+
+  // Test with copy initialization
+  {
+    Cache a;
+    a.__emplace(3);
+
+    Cache b = std::move(a);
+    assert(!b.__has_value()); // make sure we don't propagate
+    assert(!a.__has_value()); // make sure we disengage the source
+  }
+}
+
+constexpr bool tests() {
+  test<MoveConstructible<true>>();
+  test<MoveConstructible<false>>();
+  test<int>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/deref.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/deref.pass.cpp
new file mode 100644
index 0000000..3a07516
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/deref.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr T const& operator*() const;
+// constexpr T& operator*();
+
+#include <ranges>
+
+#include <cassert>
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+
+  // non-const version
+  {
+    Cache cache; cache.__emplace(3);
+    T& result = *cache;
+    assert(result == T{3});
+  }
+
+  // const version
+  {
+    Cache cache; cache.__emplace(3);
+    T const& result = *static_cast<Cache const&>(cache);
+    assert(result == T{3});
+  }
+}
+
+struct T {
+  int x;
+  constexpr explicit T(int i) : x(i) { }
+  constexpr bool operator==(T const& other) const { return x == other.x; }
+};
+
+constexpr bool tests() {
+  test<T>();
+  test<int>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/emplace.pass.cpp
new file mode 100644
index 0000000..c94fea6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/emplace.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class ...Args>
+// constexpr T& __emplace(Args&& ...);
+
+#include <ranges>
+
+#include <cassert>
+#include <tuple>
+
+template<int I>
+struct X {
+  int value = -1;
+  template<int J>
+  friend constexpr bool operator==(X const& a, X<J> const& b) { return I == J && a.value == b.value; }
+};
+
+struct NonMovable {
+  int value = -1;
+  NonMovable() = default;
+  constexpr explicit NonMovable(int v) : value(v) { }
+  NonMovable(NonMovable&&) = delete;
+  NonMovable& operator=(NonMovable&&) = delete;
+};
+
+constexpr bool test() {
+  {
+    using T = std::tuple<>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace();
+    assert(&result == &*cache);
+    assert(result == T());
+  }
+
+  {
+    using T = std::tuple<X<0>>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace();
+    assert(&result == &*cache);
+    assert(result == T());
+  }
+  {
+    using T = std::tuple<X<0>>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace(X<0>{0});
+    assert(&result == &*cache);
+    assert(result == T(X<0>{0}));
+  }
+
+  {
+    using T = std::tuple<X<0>, X<1>>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace();
+    assert(&result == &*cache);
+    assert(result == T());
+  }
+  {
+    using T = std::tuple<X<0>, X<1>>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace(X<0>{0}, X<1>{1});
+    assert(&result == &*cache);
+    assert(result == T(X<0>{0}, X<1>{1}));
+  }
+
+  // Make sure that we do not require the type to be movable when we emplace it.
+  // Move elision should be performed instead, see http://eel.is/c++draft/range.nonprop.cache#note-1.
+  {
+    using Cache = std::ranges::__non_propagating_cache<NonMovable>;
+    Cache cache;
+    NonMovable& result = cache.__emplace();
+    assert(&result == &*cache);
+    assert(result.value == -1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(test());
+  test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/emplace_from.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/emplace_from.pass.cpp
new file mode 100644
index 0000000..d097be3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/emplace_from.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class Fn>
+// constexpr T& __emplace_from(Fn const&);
+
+#include <ranges>
+
+#include <cassert>
+#include <tuple>
+
+template<int I>
+struct X {
+  int value = -1;
+  template<int J>
+  friend constexpr bool operator==(X const& a, X<J> const& b) { return I == J && a.value == b.value; }
+};
+
+struct NonMovable {
+  int value = -1;
+  NonMovable() = default;
+  constexpr explicit NonMovable(int v) : value(v) { }
+  NonMovable(NonMovable&&) = delete;
+  NonMovable& operator=(NonMovable&&) = delete;
+};
+
+constexpr bool test() {
+  {
+    using T = std::tuple<>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace_from([] { return T(); });
+    assert(&result == &*cache);
+    assert(result == T());
+  }
+  {
+    using T = std::tuple<X<0>>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace_from([] { return T(X<0>{0}); });
+    assert(&result == &*cache);
+    assert(result == T(X<0>{0}));
+  }
+  {
+    using T = std::tuple<X<0>, X<1>>;
+    using Cache = std::ranges::__non_propagating_cache<T>;
+    Cache cache;
+    T& result = cache.__emplace_from([] { return T(X<0>{0}, X<1>{1}); });
+    assert(&result == &*cache);
+    assert(result == T(X<0>{0}, X<1>{1}));
+  }
+
+  // Make sure that we do not require the type to be movable when we emplace it.
+  // Move elision should be performed instead, see http://eel.is/c++draft/range.nonprop.cache#note-1.
+  {
+    using Cache = std::ranges::__non_propagating_cache<NonMovable>;
+    Cache cache;
+    NonMovable& result = cache.__emplace_from([] { return NonMovable(3); });
+    assert(&result == &*cache);
+    assert(result.value == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(test());
+  test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/has_value.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/has_value.pass.cpp
new file mode 100644
index 0000000..e273062
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.nonprop.cache/has_value.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr bool __has_value() const;
+
+#include <ranges>
+
+#include <cassert>
+
+template <class T>
+constexpr void test() {
+  using Cache = std::ranges::__non_propagating_cache<T>;
+
+  // __has_value on an empty cache
+  {
+    Cache const cache;
+    assert(!cache.__has_value());
+  }
+
+  // __has_value on a non-empty cache
+  {
+    Cache cache; cache.__emplace();
+    assert(cache.__has_value());
+  }
+}
+
+struct T { };
+
+constexpr bool tests() {
+  test<T>();
+  test<int>();
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(tests());
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/different_from.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/different_from.compile.pass.cpp
new file mode 100644
index 0000000..f19c1ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/different_from.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ranges>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Check that different_from.h is self-contained
+// ADDITIONAL_COMPILE_FLAGS: -Wno-private-header
+
+#include <__concepts/different_from.h>
+
+static_assert(std::__different_from<int, char>);
+static_assert(std::__different_from<const int, char>);
+static_assert(!std::__different_from<const int, int>);
+static_assert(!std::__different_from<const volatile int, int>);
+static_assert(!std::__different_from<const int&, int>);
+static_assert(!std::__different_from<int&, int>);
+static_assert(!std::__different_from<int&&, int>);
+static_assert(!std::__different_from<int, int&>);
+static_assert(!std::__different_from<int&, const int&>);
+static_assert(!std::__different_from<int(&)(), int()>);
+static_assert(std::__different_from<int(&)(), int(*)()>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/has_arrow.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/has_arrow.compile.pass.cpp
new file mode 100644
index 0000000..1e04968
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/has_arrow.compile.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ranges>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <iterator>
+
+#include "test_macros.h"
+
+struct simple_iter {
+    typedef std::input_iterator_tag         iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+
+    reference operator*() const;
+    pointer operator->() const;
+    friend bool operator==(const simple_iter&, const simple_iter&);
+    friend bool operator< (const simple_iter&, const simple_iter&);
+    friend bool operator<=(const simple_iter&, const simple_iter&);
+    friend bool operator> (const simple_iter&, const simple_iter&);
+    friend bool operator>=(const simple_iter&, const simple_iter&);
+
+    simple_iter& operator++();
+    simple_iter operator++(int);
+};
+
+struct no_star {
+    typedef std::input_iterator_tag         iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+
+ /* reference operator*() const; */
+    pointer operator->() const;
+    friend bool operator==(const simple_iter&, const simple_iter&);
+    friend bool operator< (const simple_iter&, const simple_iter&);
+    friend bool operator<=(const simple_iter&, const simple_iter&);
+    friend bool operator> (const simple_iter&, const simple_iter&);
+    friend bool operator>=(const simple_iter&, const simple_iter&);
+
+    simple_iter& operator++();
+    simple_iter operator++(int);
+};
+
+struct no_arrow {
+    typedef std::input_iterator_tag         iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+
+    reference operator*() const;
+ /* pointer operator->() const; */
+    friend bool operator==(const simple_iter&, const simple_iter&);
+    friend bool operator< (const simple_iter&, const simple_iter&);
+    friend bool operator<=(const simple_iter&, const simple_iter&);
+    friend bool operator> (const simple_iter&, const simple_iter&);
+    friend bool operator>=(const simple_iter&, const simple_iter&);
+
+    simple_iter& operator++();
+    simple_iter operator++(int);
+};
+
+struct E {};
+struct Incomplete;
+
+static_assert(std::__has_arrow<int*>);
+static_assert(std::__has_arrow<E*>);
+static_assert(!std::__has_arrow<Incomplete*>); // Because it's not an input_iterator.
+static_assert(std::__has_arrow<simple_iter>);
+static_assert(!std::__has_arrow<no_star>);
+static_assert(!std::__has_arrow<no_arrow>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/simple_view.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/simple_view.compile.pass.cpp
new file mode 100644
index 0000000..ce8cd11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/range.utility.helpers/simple_view.compile.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ranges>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct SimpleView : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+
+struct WrongConstView : std::ranges::view_base {
+  int *begin();
+  const int *begin() const;
+  int *end();
+  const int *end() const;
+};
+
+struct NoConstView : std::ranges::view_base {
+  int *begin();
+  int *end();
+};
+
+struct DifferentSentinel : std::ranges::view_base {
+  int *begin() const;
+  sentinel_wrapper<int*> end() const;
+};
+
+struct WrongConstSentinel : std::ranges::view_base {
+  int *begin() const;
+  sentinel_wrapper<int*> end();
+  sentinel_wrapper<const int*> end() const;
+};
+
+static_assert( std::ranges::__simple_view<SimpleView>);
+static_assert(!std::ranges::__simple_view<WrongConstView>);
+static_assert(!std::ranges::__simple_view<NoConstView>);
+static_assert( std::ranges::__simple_view<DifferentSentinel>);
+static_assert(!std::ranges::__simple_view<WrongConstSentinel>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/ranges/version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/ranges/version.compile.pass.cpp
new file mode 100644
index 0000000..de955a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/ranges/version.compile.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// <ranges>
+
+#include <ranges>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+// Required for MSVC internal test runner compatibility.
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/conditional-compile-flags.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/conditional-compile-flags.sh.cpp
new file mode 100644
index 0000000..2c63cb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/conditional-compile-flags.sh.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test ensures that we can add compile flags that are conditional on Lit features.
+
+// ADDITIONAL_COMPILE_FLAGS(some-defined-feature): -this-flag-should-be-added
+// ADDITIONAL_COMPILE_FLAGS(some-undefined-feature): -this-flag-should-not-be-added
+// RUN: echo "%{compile_flags}" | grep -e '-this-flag-should-be-added'
+// RUN: echo "%{compile_flags}" | grep -v -e '-this-flag-should-not-be-added'
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/lit.local.cfg
new file mode 100644
index 0000000..44618de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/lit.local.cfg
@@ -0,0 +1,2 @@
+# Add a Lit feature so we can test conditional addition of compile flags.
+config.available_features.add('some-defined-feature')
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/substitutes-in-compile-flags.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/substitutes-in-compile-flags.sh.cpp
new file mode 100644
index 0000000..499d8da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/substitutes-in-compile-flags.sh.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test greps for %t, which is expanded to a path with backslashes. When
+// that is passed to grep, those backslashes must be escaped. We escape those
+// within the pattern into a file and use this file with 'grep'.
+
+// Make sure that substitutions are performed inside additional compiler flags.
+
+// ADDITIONAL_COMPILE_FLAGS: -I %t.1
+// ADDITIONAL_COMPILE_FLAGS: -isystem %t.2 , -isysroot %t.3
+// RUN: echo "-I %t.1 -isystem %t.2 -isysroot %t.3" | sed "s/\\\/\\\\\\\/g" > %t.escaped.grep
+// RUN: echo "%{compile_flags}" | grep -e -f %t.escaped.grep
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/substitutes-in-run.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/substitutes-in-run.sh.cpp
new file mode 100644
index 0000000..387b1a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/additional_compile_flags/substitutes-in-run.sh.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that additional compiler flags are added to the %{compile_flags}
+// substitution.
+
+// ADDITIONAL_COMPILE_FLAGS: -foo
+// ADDITIONAL_COMPILE_FLAGS: -bar
+// ADDITIONAL_COMPILE_FLAGS: -baz, -foom
+// RUN: echo "%{compile_flags}" | grep -e '-foo -bar -baz -foom'
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.fail.cpp/compile-error.compile.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.fail.cpp/compile-error.compile.fail.cpp
new file mode 100644
index 0000000..9390f7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.fail.cpp/compile-error.compile.fail.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if it fails at compile-time
+
+struct Foo { };
+typedef Foo::x x;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.fail.cpp/compile-success.compile.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.fail.cpp/compile-success.compile.fail.cpp
new file mode 100644
index 0000000..1bc6bcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.fail.cpp/compile-success.compile.fail.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it succeeds at compile-time
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/compile-error.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/compile-error.compile.pass.cpp
new file mode 100644
index 0000000..6ff8850
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/compile-error.compile.pass.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at compile-time
+
+struct Foo { };
+typedef Foo::x x;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/compile-success.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/compile-success.compile.pass.cpp
new file mode 100644
index 0000000..16ca5f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/compile-success.compile.pass.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if it succeeds to compile
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/link-error.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/link-error.compile.pass.cpp
new file mode 100644
index 0000000..b5f6e5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/link-error.compile.pass.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes even if there's a link error, i.e. it isn't linked.
+
+extern void this_is_an_undefined_symbol();
+
+int main(int, char**) {
+    this_is_an_undefined_symbol();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/run-error.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/run-error.compile.pass.cpp
new file mode 100644
index 0000000..dd1f084
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/compile.pass.cpp/run-error.compile.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes even if there's a runtime error, i.e. it isn't run.
+
+int main(int, char**) {
+    return 1;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/convenience_substitutions/build_run.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/convenience_substitutions/build_run.sh.cpp
new file mode 100644
index 0000000..4698167
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/convenience_substitutions/build_run.sh.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that we provide the %{build} and %{run} convenience substitutions.
+
+// RUN: %{build}
+// RUN: %{run} "HELLO"
+
+#include <cassert>
+#include <string>
+
+int main(int argc, char** argv) {
+  assert(argc == 2);
+
+  std::string arg = argv[1];
+  assert(arg == "HELLO");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/dsl/dsl.sh.py b/app/src/main/cpp/libcxx/test/libcxx/selftest/dsl/dsl.sh.py
new file mode 100644
index 0000000..81fb60a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/dsl/dsl.sh.py
@@ -0,0 +1,493 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+# Note: We prepend arguments with 'x' to avoid thinking there are too few
+#       arguments in case an argument is an empty string.
+# RUN: %{python} %s x%S x%T x%{substitutions}
+
+import base64
+import copy
+import os
+import pickle
+import platform
+import subprocess
+import sys
+import unittest
+from os.path import dirname
+
+# Allow importing 'lit' and the 'libcxx' module. Make sure we put the lit
+# path first so we don't find any system-installed version.
+monorepoRoot = dirname(dirname(dirname(dirname(dirname(dirname(__file__))))))
+sys.path = [os.path.join(monorepoRoot, 'libcxx', 'utils'),
+            os.path.join(monorepoRoot, 'llvm', 'utils', 'lit')] + sys.path
+import libcxx.test.dsl as dsl
+import lit.LitConfig
+import lit.util
+
+# Steal some parameters from the config running this test so that we can
+# bootstrap our own TestingConfig.
+args = list(map(lambda s: s[1:], sys.argv[1:8])) # Remove the leading 'x'
+SOURCE_ROOT, EXEC_PATH, SUBSTITUTIONS = args
+sys.argv[1:8] = []
+
+# Decode the substitutions.
+SUBSTITUTIONS = pickle.loads(base64.b64decode(SUBSTITUTIONS))
+for s, sub in SUBSTITUTIONS:
+    print("Substitution '{}' is '{}'".format(s, sub))
+
+class SetupConfigs(unittest.TestCase):
+    """
+    Base class for the tests below -- it creates a fake TestingConfig.
+    """
+    def setUp(self):
+        """
+        Create a fake TestingConfig that can be populated however we wish for
+        the purpose of running unit tests below. We pre-populate it with the
+        minimum required substitutions.
+        """
+        self.litConfig = lit.LitConfig.LitConfig(
+            progname='lit',
+            path=[],
+            quiet=False,
+            useValgrind=False,
+            valgrindLeakCheck=False,
+            valgrindArgs=[],
+            noExecute=False,
+            debug=False,
+            isWindows=platform.system() == 'Windows',
+            order='smart',
+            params={})
+
+        self.config = lit.TestingConfig.TestingConfig.fromdefaults(self.litConfig)
+        self.config.environment = dict(os.environ)
+        self.config.test_source_root = SOURCE_ROOT
+        self.config.test_exec_root = EXEC_PATH
+        self.config.recursiveExpansionLimit = 10
+        self.config.substitutions = copy.deepcopy(SUBSTITUTIONS)
+
+    def getSubstitution(self, substitution):
+        """
+        Return a given substitution from the TestingConfig. It is an error if
+        there is no such substitution.
+        """
+        found = [x for (s, x) in self.config.substitutions if s == substitution]
+        assert len(found) == 1
+        return found[0]
+
+
+def findIndex(list, pred):
+    """Finds the index of the first element satisfying 'pred' in a list, or
+       'len(list)' if there is no such element."""
+    index = 0
+    for x in list:
+        if pred(x):
+            break
+        else:
+            index += 1
+    return index
+
+
+class TestHasCompileFlag(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.hasCompileFlag
+    """
+    def test_no_flag_should_work(self):
+        self.assertTrue(dsl.hasCompileFlag(self.config, ''))
+
+    def test_flag_exists(self):
+        self.assertTrue(dsl.hasCompileFlag(self.config, '-O1'))
+
+    def test_nonexistent_flag(self):
+        self.assertFalse(dsl.hasCompileFlag(self.config, '-this_is_not_a_flag_any_compiler_has'))
+
+    def test_multiple_flags(self):
+        self.assertTrue(dsl.hasCompileFlag(self.config, '-O1 -Dhello'))
+
+
+class TestSourceBuilds(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.sourceBuilds
+    """
+    def test_valid_program_builds(self):
+        source = """int main(int, char**) { return 0; }"""
+        self.assertTrue(dsl.sourceBuilds(self.config, source))
+
+    def test_compilation_error_fails(self):
+        source = """int main(int, char**) { this does not compile }"""
+        self.assertFalse(dsl.sourceBuilds(self.config, source))
+
+    def test_link_error_fails(self):
+        source = """extern void this_isnt_defined_anywhere();
+                    int main(int, char**) { this_isnt_defined_anywhere(); return 0; }"""
+        self.assertFalse(dsl.sourceBuilds(self.config, source))
+
+
+class TestProgramOutput(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.programOutput
+    """
+    def test_valid_program_returns_output(self):
+        source = """
+        #include <cstdio>
+        int main(int, char**) { std::printf("FOOBAR"); return 0; }
+        """
+        self.assertEqual(dsl.programOutput(self.config, source), "FOOBAR")
+
+    def test_valid_program_returns_output_newline_handling(self):
+        source = """
+        #include <cstdio>
+        int main(int, char**) { std::printf("FOOBAR\\n"); return 0; }
+        """
+        self.assertEqual(dsl.programOutput(self.config, source), "FOOBAR\n")
+
+    def test_valid_program_returns_no_output(self):
+        source = """
+        int main(int, char**) { return 0; }
+        """
+        self.assertEqual(dsl.programOutput(self.config, source), "")
+
+    def test_program_that_fails_to_run_raises_runtime_error(self):
+        # The program compiles, but exits with an error
+        source = """
+        int main(int, char**) { return 1; }
+        """
+        self.assertRaises(dsl.ConfigurationRuntimeError, lambda: dsl.programOutput(self.config, source))
+
+    def test_program_that_fails_to_compile_raises_compilation_error(self):
+        # The program doesn't compile
+        source = """
+        int main(int, char**) { this doesnt compile }
+        """
+        self.assertRaises(dsl.ConfigurationCompilationError, lambda: dsl.programOutput(self.config, source))
+
+    def test_pass_arguments_to_program(self):
+        source = """
+        #include <cassert>
+        #include <string>
+        int main(int argc, char** argv) {
+            assert(argc == 3);
+            assert(argv[1] == std::string("first-argument"));
+            assert(argv[2] == std::string("second-argument"));
+            return 0;
+        }
+        """
+        args = ["first-argument", "second-argument"]
+        self.assertEqual(dsl.programOutput(self.config, source, args=args), "")
+
+    def test_caching_is_not_too_aggressive(self):
+        # Run a program, then change the substitutions and run it again.
+        # Make sure the program is run the second time and the right result
+        # is given, to ensure we're not incorrectly caching the result of the
+        # first program run.
+        source = """
+        #include <cstdio>
+        int main(int, char**) {
+            std::printf("MACRO=%u\\n", MACRO);
+            return 0;
+        }
+        """
+        compileFlagsIndex = findIndex(self.config.substitutions, lambda x: x[0] == '%{compile_flags}')
+        compileFlags = self.config.substitutions[compileFlagsIndex][1]
+
+        self.config.substitutions[compileFlagsIndex] = ('%{compile_flags}',  compileFlags + ' -DMACRO=1')
+        output1 = dsl.programOutput(self.config, source)
+        self.assertEqual(output1, "MACRO=1\n")
+
+        self.config.substitutions[compileFlagsIndex] = ('%{compile_flags}',  compileFlags + ' -DMACRO=2')
+        output2 = dsl.programOutput(self.config, source)
+        self.assertEqual(output2, "MACRO=2\n")
+
+    def test_program_stderr_is_not_conflated_with_stdout(self):
+        # Run a program that produces stdout output and stderr output too, making
+        # sure the stderr output does not pollute the stdout output.
+        source = """
+        #include <cstdio>
+        int main(int, char**) {
+            std::fprintf(stdout, "STDOUT-OUTPUT");
+            std::fprintf(stderr, "STDERR-OUTPUT");
+            return 0;
+        }
+        """
+        self.assertEqual(dsl.programOutput(self.config, source), "STDOUT-OUTPUT")
+
+
+class TestProgramSucceeds(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.programSucceeds
+    """
+    def test_success(self):
+        source = """
+        int main(int, char**) { return 0; }
+        """
+        self.assertTrue(dsl.programSucceeds(self.config, source))
+
+    def test_failure(self):
+        source = """
+        int main(int, char**) { return 1; }
+        """
+        self.assertFalse(dsl.programSucceeds(self.config, source))
+
+    def test_compile_failure(self):
+        source = """
+        this does not compile
+        """
+        self.assertRaises(dsl.ConfigurationCompilationError, lambda: dsl.programSucceeds(self.config, source))
+
+class TestHasLocale(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.hasLocale
+    """
+    def test_doesnt_explode(self):
+        # It's really hard to test that a system has a given locale, so at least
+        # make sure we don't explode when we try to check it.
+        try:
+            dsl.hasAnyLocale(self.config, ['en_US.UTF-8'])
+        except subprocess.CalledProcessError:
+            self.fail("checking for hasLocale should not explode")
+
+    def test_nonexistent_locale(self):
+        self.assertFalse(dsl.hasAnyLocale(self.config, ['forsurethisisnotanexistinglocale']))
+
+    def test_localization_program_doesnt_compile(self):
+        compilerIndex = findIndex(self.config.substitutions, lambda x: x[0] == '%{cxx}')
+        self.config.substitutions[compilerIndex] = ('%{cxx}', 'this-is-certainly-not-a-valid-compiler!!')
+        self.assertRaises(dsl.ConfigurationCompilationError, lambda: dsl.hasAnyLocale(self.config, ['en_US.UTF-8']))
+
+
+class TestCompilerMacros(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.compilerMacros
+    """
+    def test_basic(self):
+        macros = dsl.compilerMacros(self.config)
+        self.assertIsInstance(macros, dict)
+        self.assertGreater(len(macros), 0)
+        for (k, v) in macros.items():
+            self.assertIsInstance(k, str)
+            self.assertIsInstance(v, str)
+
+    def test_no_flag(self):
+        macros = dsl.compilerMacros(self.config)
+        self.assertIn('__cplusplus', macros.keys())
+
+    def test_empty_flag(self):
+        macros = dsl.compilerMacros(self.config, '')
+        self.assertIn('__cplusplus', macros.keys())
+
+    def test_with_flag(self):
+        macros = dsl.compilerMacros(self.config, '-DFOO=3')
+        self.assertIn('__cplusplus', macros.keys())
+        self.assertEqual(macros['FOO'], '3')
+
+    def test_with_flags(self):
+        macros = dsl.compilerMacros(self.config, '-DFOO=3 -DBAR=hello')
+        self.assertIn('__cplusplus', macros.keys())
+        self.assertEqual(macros['FOO'], '3')
+        self.assertEqual(macros['BAR'], 'hello')
+
+
+class TestFeatureTestMacros(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.featureTestMacros
+    """
+    def test_basic(self):
+        macros = dsl.featureTestMacros(self.config)
+        self.assertIsInstance(macros, dict)
+        self.assertGreater(len(macros), 0)
+        for (k, v) in macros.items():
+            self.assertIsInstance(k, str)
+            self.assertIsInstance(v, int)
+
+
+class TestFeature(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.Feature
+    """
+    def test_trivial(self):
+        feature = dsl.Feature(name='name')
+        origSubstitutions = copy.deepcopy(self.config.substitutions)
+        actions = feature.getActions(self.config)
+        self.assertTrue(len(actions) == 1)
+        for a in actions:
+            a.applyTo(self.config)
+        self.assertEqual(origSubstitutions, self.config.substitutions)
+        self.assertIn('name', self.config.available_features)
+
+    def test_name_can_be_a_callable(self):
+        feature = dsl.Feature(name=lambda cfg: 'name')
+        for a in feature.getActions(self.config):
+            a.applyTo(self.config)
+        self.assertIn('name', self.config.available_features)
+
+    def test_name_is_not_a_string_1(self):
+        feature = dsl.Feature(name=None)
+        self.assertRaises(ValueError, lambda: feature.getActions(self.config))
+        self.assertRaises(ValueError, lambda: feature.pretty(self.config))
+
+    def test_name_is_not_a_string_2(self):
+        feature = dsl.Feature(name=lambda cfg: None)
+        self.assertRaises(ValueError, lambda: feature.getActions(self.config))
+        self.assertRaises(ValueError, lambda: feature.pretty(self.config))
+
+    def test_adding_action(self):
+        feature = dsl.Feature(name='name', actions=[dsl.AddCompileFlag('-std=c++03')])
+        origLinkFlags = copy.deepcopy(self.getSubstitution('%{link_flags}'))
+        for a in feature.getActions(self.config):
+            a.applyTo(self.config)
+        self.assertIn('name', self.config.available_features)
+        self.assertIn('-std=c++03', self.getSubstitution('%{compile_flags}'))
+        self.assertEqual(origLinkFlags, self.getSubstitution('%{link_flags}'))
+
+    def test_actions_can_be_a_callable(self):
+        feature = dsl.Feature(name='name',
+                              actions=lambda cfg: (
+                                self.assertIs(self.config, cfg),
+                                [dsl.AddCompileFlag('-std=c++03')]
+                              )[1])
+        for a in feature.getActions(self.config):
+            a.applyTo(self.config)
+        self.assertIn('-std=c++03', self.getSubstitution('%{compile_flags}'))
+
+    def test_unsupported_feature(self):
+        feature = dsl.Feature(name='name', when=lambda _: False)
+        self.assertEqual(feature.getActions(self.config), [])
+
+    def test_is_supported_gets_passed_the_config(self):
+        feature = dsl.Feature(name='name', when=lambda cfg: (self.assertIs(self.config, cfg), True)[1])
+        self.assertEqual(len(feature.getActions(self.config)), 1)
+
+
+def _throw():
+    raise ValueError()
+
+class TestParameter(SetupConfigs):
+    """
+    Tests for libcxx.test.dsl.Parameter
+    """
+    def test_empty_name_should_blow_up(self):
+        self.assertRaises(ValueError, lambda: dsl.Parameter(name='', choices=['c++03'], type=str, help='', actions=lambda _: []))
+
+    def test_empty_choices_should_blow_up(self):
+        self.assertRaises(ValueError, lambda: dsl.Parameter(name='std', choices=[], type=str, help='', actions=lambda _: []))
+
+    def test_no_choices_is_ok(self):
+        param = dsl.Parameter(name='triple', type=str, help='', actions=lambda _: [])
+        self.assertEqual(param.name, 'triple')
+
+    def test_name_is_set_correctly(self):
+        param = dsl.Parameter(name='std', choices=['c++03'], type=str, help='', actions=lambda _: [])
+        self.assertEqual(param.name, 'std')
+
+    def test_no_value_provided_and_no_default_value(self):
+        param = dsl.Parameter(name='std', choices=['c++03'], type=str, help='', actions=lambda _: [])
+        self.assertRaises(ValueError, lambda: param.getActions(self.config, self.litConfig.params))
+
+    def test_no_value_provided_and_default_value(self):
+        param = dsl.Parameter(name='std', choices=['c++03'], type=str, help='', default='c++03',
+                              actions=lambda std: [dsl.AddFeature(std)])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('c++03', self.config.available_features)
+
+    def test_value_provided_on_command_line_and_no_default_value(self):
+        self.litConfig.params['std'] = 'c++03'
+        param = dsl.Parameter(name='std', choices=['c++03'], type=str, help='',
+                              actions=lambda std: [dsl.AddFeature(std)])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('c++03', self.config.available_features)
+
+    def test_value_provided_on_command_line_and_default_value(self):
+        """The value provided on the command line should override the default value"""
+        self.litConfig.params['std'] = 'c++11'
+        param = dsl.Parameter(name='std', choices=['c++03', 'c++11'], type=str, default='c++03', help='',
+                              actions=lambda std: [dsl.AddFeature(std)])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('c++11', self.config.available_features)
+        self.assertNotIn('c++03', self.config.available_features)
+
+    def test_value_provided_in_config_and_default_value(self):
+        """The value provided in the config should override the default value"""
+        self.config.std ='c++11'
+        param = dsl.Parameter(name='std', choices=['c++03', 'c++11'], type=str, default='c++03', help='',
+                              actions=lambda std: [dsl.AddFeature(std)])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('c++11', self.config.available_features)
+        self.assertNotIn('c++03', self.config.available_features)
+
+    def test_value_provided_in_config_and_on_command_line(self):
+        """The value on the command line should override the one in the config"""
+        self.config.std = 'c++11'
+        self.litConfig.params['std'] = 'c++03'
+        param = dsl.Parameter(name='std', choices=['c++03', 'c++11'], type=str, help='',
+                              actions=lambda std: [dsl.AddFeature(std)])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('c++03', self.config.available_features)
+        self.assertNotIn('c++11', self.config.available_features)
+
+    def test_no_actions(self):
+        self.litConfig.params['std'] = 'c++03'
+        param = dsl.Parameter(name='std', choices=['c++03'], type=str, help='',
+                              actions=lambda _: [])
+        actions = param.getActions(self.config, self.litConfig.params)
+        self.assertEqual(actions, [])
+
+    def test_boolean_value_parsed_from_trueish_string_parameter(self):
+        self.litConfig.params['enable_exceptions'] = "True"
+        param = dsl.Parameter(name='enable_exceptions', choices=[True, False], type=bool, help='',
+                              actions=lambda exceptions: [] if exceptions else _throw())
+        self.assertEqual(param.getActions(self.config, self.litConfig.params), [])
+
+    def test_boolean_value_from_true_boolean_parameter(self):
+        self.litConfig.params['enable_exceptions'] = True
+        param = dsl.Parameter(name='enable_exceptions', choices=[True, False], type=bool, help='',
+                              actions=lambda exceptions: [] if exceptions else _throw())
+        self.assertEqual(param.getActions(self.config, self.litConfig.params), [])
+
+    def test_boolean_value_parsed_from_falseish_string_parameter(self):
+        self.litConfig.params['enable_exceptions'] = "False"
+        param = dsl.Parameter(name='enable_exceptions', choices=[True, False], type=bool, help='',
+                              actions=lambda exceptions: [] if exceptions else [dsl.AddFeature("-fno-exceptions")])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('-fno-exceptions', self.config.available_features)
+
+    def test_boolean_value_from_false_boolean_parameter(self):
+        self.litConfig.params['enable_exceptions'] = False
+        param = dsl.Parameter(name='enable_exceptions', choices=[True, False], type=bool, help='',
+                              actions=lambda exceptions: [] if exceptions else [dsl.AddFeature("-fno-exceptions")])
+        for a in param.getActions(self.config, self.litConfig.params):
+            a.applyTo(self.config)
+        self.assertIn('-fno-exceptions', self.config.available_features)
+
+    def test_list_parsed_from_comma_delimited_string_empty(self):
+        self.litConfig.params['additional_features'] = ""
+        param = dsl.Parameter(name='additional_features', type=list, help='', actions=lambda f: f)
+        self.assertEqual(param.getActions(self.config, self.litConfig.params), [])
+
+    def test_list_parsed_from_comma_delimited_string_1(self):
+        self.litConfig.params['additional_features'] = "feature1"
+        param = dsl.Parameter(name='additional_features', type=list, help='', actions=lambda f: f)
+        self.assertEqual(param.getActions(self.config, self.litConfig.params), ['feature1'])
+
+    def test_list_parsed_from_comma_delimited_string_2(self):
+        self.litConfig.params['additional_features'] = "feature1,feature2"
+        param = dsl.Parameter(name='additional_features', type=list, help='', actions=lambda f: f)
+        self.assertEqual(param.getActions(self.config, self.litConfig.params), ['feature1', 'feature2'])
+
+    def test_list_parsed_from_comma_delimited_string_3(self):
+        self.litConfig.params['additional_features'] = "feature1,feature2, feature3"
+        param = dsl.Parameter(name='additional_features', type=list, help='', actions=lambda f: f)
+        self.assertEqual(param.getActions(self.config, self.litConfig.params), ['feature1', 'feature2', 'feature3'])
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/dsl/lit.local.cfg b/app/src/main/cpp/libcxx/test/libcxx/selftest/dsl/lit.local.cfg
new file mode 100644
index 0000000..ce4a323
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/dsl/lit.local.cfg
@@ -0,0 +1,14 @@
+# Since we try to pass substitutions as-is to some tests, we must "escape"
+# them in case they contain other substitutions. Otherwise, the substitutions
+# will be fully expanded when passed to the tests. For example, we want an
+# %{exec} substitution that contains `--execdir %T` to be passed as-is, without
+# substituting the directory. This way, the test itself can populate %T as it
+# sees fit, and %{exec} will respect it.
+#
+# To solve this problem, we pickle the substitutions and base64 encode that
+# to pass it to the test, and we decode and unpickle the substitutions from
+# within the test.
+import base64, lit.util, pickle
+base64Encode = lambda s: lit.util.to_string(base64.b64encode(lit.util.to_bytes(s)))
+escapedSubstitutions = base64Encode(pickle.dumps(config.substitutions))
+config.substitutions.append(('%{substitutions}', escapedSubstitutions))
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/compile-failure.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/compile-failure.fail.cpp
new file mode 100644
index 0000000..245ade4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/compile-failure.fail.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if we don't have clang-verify support and
+// the test fails to compile.
+
+// UNSUPPORTED: verify-support
+
+struct Foo { };
+typedef Foo::x x;
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/compile-success.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/compile-success.fail.cpp
new file mode 100644
index 0000000..e47efc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/compile-success.fail.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if we don't have clang-verify support and
+// the test compiles successfully.
+
+// UNSUPPORTED: verify-support
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/no-diagnostics-unmarked.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/no-diagnostics-unmarked.fail.cpp
new file mode 100644
index 0000000..683a9c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/no-diagnostics-unmarked.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: verify-support
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if there are no diagnostics, but we didn't
+// use the 'expected-no-diagnostics' markup.
+//
+// Note: For the purpose of this test, make sure the file would otherwise
+//       compile to make sure we really fail due to a lack of markup.
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/no-diagnostics.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/no-diagnostics.fail.cpp
new file mode 100644
index 0000000..8172961
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/no-diagnostics.fail.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: verify-support
+
+// Make sure the test passes if we expected no diagnostics and included
+// the markup.
+
+// expected-no-diagnostics
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/right-diagnostic.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/right-diagnostic.fail.cpp
new file mode 100644
index 0000000..4d42881
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/right-diagnostic.fail.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: verify-support
+
+// Make sure the test passes if it fails at compile-time with the expected
+// diagnostic.
+
+struct Foo { };
+typedef Foo::x x; // expected-error{{no type named 'x' in 'Foo'}}
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/wrong-diagnostic.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/wrong-diagnostic.fail.cpp
new file mode 100644
index 0000000..f106230
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/fail.cpp/wrong-diagnostic.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: verify-support
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if the expected diagnostic is wrong.
+
+struct Foo { };
+typedef Foo::x x; // expected-error{{this is not found in the errors}}
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/a.txt b/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/a.txt
new file mode 100644
index 0000000..e69de29
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/absolute-and-relative-paths.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/absolute-and-relative-paths.sh.cpp
new file mode 100644
index 0000000..ac52f67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/absolute-and-relative-paths.sh.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that FILE_DEPENDENCIES work with relative AND absolute paths.
+
+// FILE_DEPENDENCIES: %S/a.txt
+// RUN: test -e %T/a.txt
+
+// FILE_DEPENDENCIES: dir/b.txt
+// RUN: test -e %T/b.txt
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/dir/b.txt b/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/dir/b.txt
new file mode 100644
index 0000000..e69de29
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/substitute-in-dependencies.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/substitute-in-dependencies.sh.cpp
new file mode 100644
index 0000000..c63684c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/file_dependencies/substitute-in-dependencies.sh.cpp
@@ -0,0 +1,12 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that lit substitutions are expanded inside FILE_DEPENDENCIES lines.
+
+// FILE_DEPENDENCIES: %s
+// RUN: test -e %T/substitute-in-dependencies.sh.cpp
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/compile-error.link.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/compile-error.link.fail.cpp
new file mode 100644
index 0000000..607be79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/compile-error.link.fail.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at compile-time.
+
+struct Foo { };
+typedef Foo::x x;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/link-error.link.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/link-error.link.fail.cpp
new file mode 100644
index 0000000..7289406
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/link-error.link.fail.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if it fails at link time.
+
+extern void this_is_an_undefined_symbol();
+
+int main(int, char**) {
+    this_is_an_undefined_symbol();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/link-success.link.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/link-success.link.fail.cpp
new file mode 100644
index 0000000..95d812a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.fail.cpp/link-success.link.fail.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it succeeds to link.
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/compile-error.link.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/compile-error.link.pass.cpp
new file mode 100644
index 0000000..607be79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/compile-error.link.pass.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at compile-time.
+
+struct Foo { };
+typedef Foo::x x;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/link-error.link.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/link-error.link.pass.cpp
new file mode 100644
index 0000000..422c9a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/link-error.link.pass.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails to link.
+
+extern void this_is_an_undefined_symbol();
+
+int main(int, char**) {
+    this_is_an_undefined_symbol();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/link-success.link.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/link-success.link.pass.cpp
new file mode 100644
index 0000000..f25da55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/link-success.link.pass.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if it succeeds to link.
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/run-error.link.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/run-error.link.pass.cpp
new file mode 100644
index 0000000..ee44d17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/link.pass.cpp/run-error.link.pass.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if it succeeds to link, even though it would have
+// failed at runtime.
+
+int main(int, char**) {
+    return 1;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/compile-error.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/compile-error.pass.cpp
new file mode 100644
index 0000000..6ff8850
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/compile-error.pass.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at compile-time
+
+struct Foo { };
+typedef Foo::x x;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/link-error.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/link-error.pass.cpp
new file mode 100644
index 0000000..70e2ab6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/link-error.pass.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at link-time
+
+extern void this_is_an_undefined_symbol();
+
+int main(int, char**) {
+    this_is_an_undefined_symbol();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/run-error.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/run-error.pass.cpp
new file mode 100644
index 0000000..eac7d88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/run-error.pass.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at runtime.
+
+int main(int, char**) {
+    return 1;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/run-success.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/run-success.pass.cpp
new file mode 100644
index 0000000..c37b79a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/run-success.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes pass if it succeeds at runtime.
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/werror.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/werror.pass.cpp
new file mode 100644
index 0000000..590785f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.cpp/werror.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure that even a simple unused variable warning is treated as an
+// error in the test suite. This is to make sure the test suite always runs
+// with -Werror.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wunused-variable
+
+// TODO: We don't enable -Werror on GCC right now, because too many tests fail.
+// UNSUPPORTED: gcc
+
+int main(int, char**) {
+    int foo;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/compile-error.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/compile-error.pass.mm
new file mode 100644
index 0000000..04bb4cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/compile-error.pass.mm
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: objective-c++
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at compile-time
+
+struct Foo { };
+typedef Foo::x x;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/link-error.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/link-error.pass.mm
new file mode 100644
index 0000000..abc34d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/link-error.pass.mm
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: objective-c++
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at link-time
+
+extern void this_is_an_undefined_symbol();
+
+int main(int, char**) {
+    this_is_an_undefined_symbol();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/no-arc.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/no-arc.pass.mm
new file mode 100644
index 0000000..dd33d1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/no-arc.pass.mm
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: objective-c++
+
+// Make sure ARC is not enabled by default in these tests.
+
+#if __has_feature(objc_arc)
+#   error "arc should not be enabled by default"
+#endif
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/run-error.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/run-error.pass.mm
new file mode 100644
index 0000000..22e1766
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/run-error.pass.mm
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: objective-c++
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails at runtime.
+
+int main(int, char**) {
+    return 1;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/run-success.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/run-success.pass.mm
new file mode 100644
index 0000000..4021b24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/run-success.pass.mm
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: objective-c++
+
+// Make sure the test passes pass if it succeeds at runtime.
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/use-objective-cxx.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/use-objective-cxx.pass.mm
new file mode 100644
index 0000000..ddd2304
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/pass.mm/use-objective-cxx.pass.mm
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: objective-c++
+
+// Make sure we can use Objective C++ features in these tests.
+
+@interface Foo
+@end
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/remote-substitutions.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/remote-substitutions.sh.cpp
new file mode 100644
index 0000000..da27979
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/remote-substitutions.sh.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// Make sure that test-executables can appear in RUN lines and be executed
+// effectively. This somewhat difficult-to-understand test checks that when
+// we run with a remote executor, test-executables are copied to the remote
+// host and their path is fixed up (directly in the command-line) to their
+// path on the remote host instead of the local host.
+//
+// We also check that the path of test-executables is replaced whether they
+// appear first in the command-line or not.
+
+// UNSUPPORTED: executor-has-no-bash
+// RUN: %{cxx} %s %{flags} %{compile_flags} %{link_flags} -o %t.exe
+// RUN: %{exec} %t.exe 0
+// RUN: %{exec} bash -c '! %t.exe 1'
+
+#include <cassert>
+#include <cstdlib>
+
+int main(int argc, char** argv) {
+  assert(argc == 2);
+  int ret = std::atoi(argv[1]);
+  return ret;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/empty.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/empty.sh.cpp
new file mode 100644
index 0000000..de97543
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/empty.sh.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it has no 'RUN:' steps
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/run-error.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/run-error.sh.cpp
new file mode 100644
index 0000000..4be0c05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/run-error.sh.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if it fails to run
+
+// RUN: false
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp
new file mode 100644
index 0000000..1d8747c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/run-success.sh.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if it succeeds to run
+
+// RUN: true
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/substitutions.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/substitutions.sh.cpp
new file mode 100644
index 0000000..99bfb9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/substitutions.sh.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure we have access to the following substitutions at all times:
+// - %{cxx}
+// - %{flags}
+// - %{compile_flags}
+// - %{link_flags}
+// - %{exec}
+
+// RUN: %{cxx} %s %{flags} %{compile_flags} %{link_flags} -o %t.exe
+// RUN: %{exec} %t.exe
+
+#include <cassert>
+
+int main(int argc, char**) {
+  assert(argc == 1);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/werror.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/werror.sh.cpp
new file mode 100644
index 0000000..3188f57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/sh.cpp/werror.sh.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure that even a simple unused variable warning is treated as an
+// error in the test suite, including in .sh.cpp tests.
+
+// TODO: We don't enable -Werror on GCC right now, because too many tests fail.
+// UNSUPPORTED: gcc
+
+// RUN: %{build} -Wunused-variable
+// RUN: %{run}
+
+int main(int, char**) {
+    int foo;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/shell-no-escape-builtins.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/shell-no-escape-builtins.sh.cpp
new file mode 100644
index 0000000..9f129d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/shell-no-escape-builtins.sh.cpp
@@ -0,0 +1,12 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that we don't escape Shell builtins like `!`, because the
+// shell otherwise thinks it's a command and it can't find it.
+
+// RUN: ! false
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/test_macros.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/test_macros.pass.cpp
new file mode 100644
index 0000000..caa31ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/test_macros.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Test the "test_macros.h" header.
+#include <__config>
+#include "test_macros.h"
+
+#ifndef TEST_STD_VER
+#error TEST_STD_VER must be defined
+#endif
+
+#ifndef TEST_NOEXCEPT
+#error TEST_NOEXCEPT must be defined
+#endif
+
+#ifndef LIBCPP_ASSERT
+#error LIBCPP_ASSERT must be defined
+#endif
+
+#ifndef LIBCPP_STATIC_ASSERT
+#error LIBCPP_STATIC_ASSERT must be defined
+#endif
+
+void test_noexcept() TEST_NOEXCEPT
+{
+}
+
+int main(int, char**)
+{
+    test_noexcept();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/tmpdir-exists.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/tmpdir-exists.sh.cpp
new file mode 100644
index 0000000..7f9e69d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/tmpdir-exists.sh.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that the directory represented by %T exists when we run the test.
+
+// RUN: test -d %T
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-diagnostics-unmarked.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-diagnostics-unmarked.verify.cpp
new file mode 100644
index 0000000..d59d42b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-diagnostics-unmarked.verify.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if there are no diagnostics, but we didn't
+// use the 'expected-no-diagnostics' markup.
+//
+// Note: For the purpose of this test, make sure the file would otherwise
+//       compile to make sure we really fail due to a lack of markup.
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-diagnostics.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-diagnostics.verify.cpp
new file mode 100644
index 0000000..d622c78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-diagnostics.verify.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if we expected no diagnostics
+
+// expected-no-diagnostics
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-werror.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-werror.verify.cpp
new file mode 100644
index 0000000..b1234ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/no-werror.verify.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure clang-verify tests distinguish warnings from errors.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wunused-variable
+
+int main(int, char**) {
+    int foo; // expected-warning {{unused variable}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/right-diagnostic.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/right-diagnostic.verify.cpp
new file mode 100644
index 0000000..8bca568
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/right-diagnostic.verify.cpp
@@ -0,0 +1,12 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the test passes if the expected diagnostic is correct.
+
+struct Foo { };
+typedef Foo::x x; // expected-error{{no type named 'x' in 'Foo'}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/wrong-diagnostic.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/wrong-diagnostic.verify.cpp
new file mode 100644
index 0000000..3bc2ba8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/selftest/verify.cpp/wrong-diagnostic.verify.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: *
+
+// Make sure the test DOES NOT pass if the expected diagnostic is wrong.
+
+struct Foo { };
+typedef Foo::x x; // expected-error{{this is not found in the errors}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/alignof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/alignof.compile.pass.cpp
new file mode 100644
index 0000000..d679e7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/alignof.compile.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Ensure that we never change the size or alignment of `basic_string`
+
+// UNSUPPORTED: c++03
+
+#include <string>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class T>
+class small_pointer {
+  uint16_t offset;
+};
+
+template <class T>
+class small_iter_allocator {
+public:
+  using value_type = T;
+  using pointer = small_pointer<T>;
+  using size_type = int16_t;
+  using difference_type = int16_t;
+
+  small_iter_allocator() TEST_NOEXCEPT {}
+
+  template <class U>
+  small_iter_allocator(small_iter_allocator<U>) TEST_NOEXCEPT {}
+
+  T* allocate(std::size_t n);
+  void deallocate(T* p, std::size_t);
+
+  friend bool operator==(small_iter_allocator, small_iter_allocator) { return true; }
+  friend bool operator!=(small_iter_allocator, small_iter_allocator) { return false; }
+};
+
+template <class CharT>
+using min_string = std::basic_string<CharT, std::char_traits<CharT>, min_allocator<CharT>>;
+
+template <class CharT>
+using test_string = std::basic_string<CharT, std::char_traits<CharT>, test_allocator<CharT>>;
+
+template <class CharT>
+using small_string = std::basic_string<CharT, std::char_traits<CharT>, small_iter_allocator<CharT>>;
+
+#if __SIZE_WIDTH__ == 64
+
+static_assert(alignof(std::string) == 8, "");
+static_assert(alignof(min_string<char>) == 8, "");
+static_assert(alignof(test_string<char>) == 8, "");
+static_assert(alignof(small_string<char>) == 2, "");
+
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#    if __WCHAR_WIDTH__ == 32
+static_assert(alignof(std::wstring) == 8, "");
+static_assert(alignof(min_string<wchar_t>) == 8, "");
+static_assert(alignof(test_string<wchar_t>) == 8, "");
+static_assert(alignof(small_string<wchar_t>) == 4, "");
+#    elif __WCHAR_WIDTH__ == 16
+static_assert(alignof(std::wstring) == 8, "");
+static_assert(alignof(min_string<wchar_t>) == 8, "");
+static_assert(alignof(test_string<wchar_t>) == 8, "");
+static_assert(alignof(small_string<wchar_t>) == 2, "");
+#    else
+#      error "Unexpected wchar_t width"
+#    endif
+#  endif
+
+#  ifndef TEST_HAS_NO_CHAR8_T
+static_assert(alignof(std::u8string) == 8, "");
+static_assert(alignof(min_string<char8_t>) == 8, "");
+static_assert(alignof(test_string<char8_t>) == 8, "");
+static_assert(alignof(small_string<char8_t>) == 2, "");
+#  endif
+
+#  ifndef TEST_HAS_NO_UNICODE_CHARS
+static_assert(alignof(std::u16string) == 8, "");
+static_assert(alignof(std::u32string) == 8, "");
+static_assert(alignof(min_string<char16_t>) == 8, "");
+static_assert(alignof(min_string<char32_t>) == 8, "");
+static_assert(alignof(test_string<char16_t>) == 8, "");
+static_assert(alignof(test_string<char32_t>) == 8, "");
+static_assert(alignof(small_string<char16_t>) == 2, "");
+static_assert(alignof(small_string<char32_t>) == 4, "");
+#  endif
+
+#elif __SIZE_WIDTH__ == 32
+
+static_assert(alignof(std::string) == 4, "");
+static_assert(alignof(min_string<char>) == 4, "");
+static_assert(alignof(test_string<char>) == 4, "");
+static_assert(alignof(small_string<char>) == 2, "");
+
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#    if __WCHAR_WIDTH__ == 32
+static_assert(alignof(std::wstring) == 4, "");
+static_assert(alignof(min_string<wchar_t>) == 4, "");
+static_assert(alignof(test_string<wchar_t>) == 4, "");
+static_assert(alignof(small_string<wchar_t>) == 4, "");
+#    elif __WCHAR_WIDTH__ == 16
+static_assert(alignof(std::wstring) == 4, "");
+static_assert(alignof(min_string<wchar_t>) == 4, "");
+static_assert(alignof(test_string<wchar_t>) == 4, "");
+static_assert(alignof(small_string<wchar_t>) == 2, "");
+#    else
+#      error "Unexpected wchar_t width"
+#    endif
+#  endif
+
+#  ifndef TEST_HAS_NO_CHAR8_T
+static_assert(alignof(std::u8string) == 4, "");
+static_assert(alignof(min_string<char8_t>) == 4, "");
+static_assert(alignof(test_string<char8_t>) == 4, "");
+static_assert(alignof(small_string<char8_t>) == 2, "");
+#  endif
+
+#  ifndef TEST_HAS_NO_UNICODE_CHARS
+static_assert(alignof(std::u16string) == 4, "");
+static_assert(alignof(std::u32string) == 4, "");
+static_assert(alignof(min_string<char16_t>) == 4, "");
+static_assert(alignof(min_string<char32_t>) == 4, "");
+static_assert(alignof(test_string<char16_t>) == 4, "");
+static_assert(alignof(test_string<char32_t>) == 4, "");
+static_assert(alignof(small_string<char32_t>) == 4, "");
+#  endif
+
+#else
+#  error "size_t has an unexpected size"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/sizeof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/sizeof.compile.pass.cpp
new file mode 100644
index 0000000..9024d11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/sizeof.compile.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Ensure that we never change the size or alignment of `basic_string`
+
+#include <string>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class T>
+class small_pointer {
+  uint16_t offset;
+};
+
+template <class T>
+class small_iter_allocator {
+public:
+  using value_type = T;
+  using pointer = small_pointer<T>;
+  using size_type = int16_t;
+  using difference_type = int16_t;
+
+  small_iter_allocator() TEST_NOEXCEPT {}
+
+  template <class U>
+  small_iter_allocator(small_iter_allocator<U>) TEST_NOEXCEPT {}
+
+  T* allocate(std::size_t n);
+  void deallocate(T* p, std::size_t);
+
+  friend bool operator==(small_iter_allocator, small_iter_allocator) { return true; }
+  friend bool operator!=(small_iter_allocator, small_iter_allocator) { return false; }
+};
+
+template <class CharT>
+using min_string = std::basic_string<CharT, std::char_traits<CharT>, min_allocator<CharT> >;
+
+template <class CharT>
+using test_string = std::basic_string<CharT, std::char_traits<CharT>, test_allocator<CharT> >;
+
+template <class CharT>
+using small_string = std::basic_string<CharT, std::char_traits<CharT>, small_iter_allocator<CharT> >;
+
+#if __SIZE_WIDTH__ == 64
+
+static_assert(sizeof(std::string) == 24, "");
+static_assert(sizeof(min_string<char>) == 24, "");
+static_assert(sizeof(test_string<char>) == 32, "");
+static_assert(sizeof(small_string<char>) == 6, "");
+
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#    if __WCHAR_WIDTH__ == 32
+static_assert(sizeof(std::wstring) == 24, "");
+static_assert(sizeof(min_string<wchar_t>) == 24, "");
+static_assert(sizeof(test_string<wchar_t>) == 32, "");
+static_assert(sizeof(small_string<wchar_t>) == 12, "");
+#    elif __WCHAR_WIDTH__ == 16
+static_assert(sizeof(std::wstring) == 24, "");
+static_assert(sizeof(min_string<wchar_t>) == 24, "");
+static_assert(sizeof(test_string<wchar_t>) == 32, "");
+static_assert(sizeof(small_string<wchar_t>) == 6, "");
+#    else
+#      error "Unexpected wchar_t width"
+#    endif
+#  endif
+
+#  ifndef TEST_HAS_NO_CHAR8_T
+static_assert(sizeof(std::u8string) == 24, "");
+static_assert(sizeof(min_string<char8_t>) == 24, "");
+static_assert(sizeof(test_string<char8_t>) == 32, "");
+static_assert(sizeof(small_string<char8_t>) == 6, "");
+#  endif
+
+#  ifndef TEST_HAS_NO_UNICODE_CHARS
+static_assert(sizeof(std::u16string) == 24, "");
+static_assert(sizeof(std::u32string) == 24, "");
+static_assert(sizeof(min_string<char16_t>) == 24, "");
+static_assert(sizeof(min_string<char32_t>) == 24, "");
+static_assert(sizeof(test_string<char16_t>) == 32, "");
+static_assert(sizeof(test_string<char32_t>) == 32, "");
+static_assert(sizeof(small_string<char16_t>) == 6, "");
+static_assert(sizeof(small_string<char32_t>) == 12, "");
+#  endif
+
+#elif __SIZE_WIDTH__ == 32
+
+static_assert(sizeof(std::string) == 12, "");
+static_assert(sizeof(min_string<char>) == 12, "");
+static_assert(sizeof(test_string<char>) == 24, "");
+static_assert(sizeof(small_string<char>) == 6, "");
+
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#    if __WCHAR_WIDTH__ == 32
+static_assert(sizeof(std::wstring) == 12, "");
+static_assert(sizeof(min_string<wchar_t>) == 12, "");
+static_assert(sizeof(test_string<wchar_t>) == 24, "");
+static_assert(sizeof(small_string<wchar_t>) == 12, "");
+#    elif __WCHAR_WIDTH__ == 16
+static_assert(sizeof(std::wstring) == 12, "");
+static_assert(sizeof(min_string<wchar_t>) == 12, "");
+static_assert(sizeof(test_string<wchar_t>) == 24, "");
+static_assert(sizeof(small_string<wchar_t>) == 6, "");
+#    else
+#      error "Unexpected wchar_t width"
+#    endif
+#  endif
+
+#  ifndef TEST_HAS_NO_CHAR8_T
+static_assert(sizeof(std::u8string) == 12, "");
+static_assert(sizeof(min_string<char8_t>) == 12, "");
+static_assert(sizeof(test_string<char8_t>) == 24, "");
+static_assert(sizeof(small_string<char>) == 6, "");
+#  endif
+
+#  ifndef TEST_HAS_NO_UNICODE_CHARS
+static_assert(sizeof(std::u16string) == 12, "");
+static_assert(sizeof(std::u32string) == 12, "");
+static_assert(sizeof(min_string<char16_t>) == 12, "");
+static_assert(sizeof(min_string<char32_t>) == 12, "");
+static_assert(sizeof(test_string<char16_t>) == 24, "");
+static_assert(sizeof(test_string<char32_t>) == 24, "");
+static_assert(sizeof(small_string<char16_t>) == 6, "");
+static_assert(sizeof(small_string<char32_t>) == 12, "");
+#  endif
+
+#else
+#  error "size_t has an unexpected size"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.back.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.back.pass.cpp
new file mode 100644
index 0000000..f2d961e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.back.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call back() on empty container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        std::string s;
+        TEST_LIBCPP_ASSERT_FAILURE(s.back(), "string::back(): string is empty");
+    }
+
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+        S s;
+        TEST_LIBCPP_ASSERT_FAILURE(s.back(), "string::back(): string is empty");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cback.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cback.pass.cpp
new file mode 100644
index 0000000..b2f0475
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cback.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call back() on empty const container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        std::string const s;
+        TEST_LIBCPP_ASSERT_FAILURE(s.back(), "string::back(): string is empty");
+    }
+
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+        const S s;
+        TEST_LIBCPP_ASSERT_FAILURE(s.back(), "string::back(): string is empty");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cfront.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cfront.pass.cpp
new file mode 100644
index 0000000..3de1b84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cfront.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call front() on empty const container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string S;
+    const S s;
+    TEST_LIBCPP_ASSERT_FAILURE(s.front(), "string::front(): string is empty");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    const S s;
+    TEST_LIBCPP_ASSERT_FAILURE(s.front(), "string::front(): string is empty");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cindex.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cindex.pass.cpp
new file mode 100644
index 0000000..74d0e4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.cindex.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Index const string out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    const S s;
+    assert(s[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(s[1], "string index out of bounds");
+  }
+
+  {
+    typedef std::string S;
+    const S s;
+    assert(s[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(s[1], "string index out of bounds");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.front.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.front.pass.cpp
new file mode 100644
index 0000000..d2d9134
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.front.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call front() on empty container.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string S;
+    S s;
+    TEST_LIBCPP_ASSERT_FAILURE(s.front(), "string::front(): string is empty");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    S s;
+    TEST_LIBCPP_ASSERT_FAILURE(s.front(), "string::front(): string is empty");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.index.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.index.pass.cpp
new file mode 100644
index 0000000..218ab0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.access/assert.index.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Index string out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string S;
+    S s;
+    assert(s[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(s[1], "string index out of bounds");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    S s;
+    assert(s[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(s[1], "string index out of bounds");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.capacity/PR53170.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.capacity/PR53170.pass.cpp
new file mode 100644
index 0000000..5592959
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.capacity/PR53170.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void reserve(); // Deprecated in C++20.
+// void reserve(size_type);
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// This test ensures that libc++ implements https://wg21.link/P0966R1 (reserve never shrinks)
+// even before C++20. This is required in order to avoid ODR violations because basic_string::reserve(size)
+// is compiled into the shared library. Hence, it needs to have the same definition in all Standard modes.
+//
+// However, note that reserve() does shrink, and it does so in all Standard modes.
+//
+// Reported as https://llvm.org/PR53170.
+
+// reserve(n) used to shrink the string until https://llvm.org/D117332 was shipped.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test() {
+    // Test that a call to reserve() does shrink the string.
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        S s(1000, 'a');
+        typename S::size_type old_cap = s.capacity();
+        s.resize(20);
+        assert(s.capacity() == old_cap);
+
+        s.reserve();
+        assert(s.capacity() < old_cap);
+    }
+
+    // Test that a call to reserve(smaller-than-capacity) never shrinks the string.
+    {
+        S s(1000, 'a');
+        typename S::size_type old_cap = s.capacity();
+        s.resize(20);
+        assert(s.capacity() == old_cap);
+
+        s.reserve(10);
+        assert(s.capacity() == old_cap);
+    }
+
+    // In particular, test that reserve(0) does NOT shrink the string.
+    {
+        S s(1000, 'a');
+        typename S::size_type old_cap = s.capacity();
+        s.resize(20);
+        assert(s.capacity() == old_cap);
+
+        s.reserve(0);
+        assert(s.capacity() == old_cap);
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test<std::string>();
+
+#if TEST_STD_VER >= 11
+    test<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test<std::string>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp
new file mode 100644
index 0000000..69b45f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.capacity/max_size.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// This test ensures that the correct max_size() is returned depending on the platform.
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <string>
+
+#include "test_macros.h"
+
+// alignment of the string heap buffer is hardcoded to 16
+static const size_t alignment = 16;
+
+template <class = int>
+TEST_CONSTEXPR_CXX20 void full_size() {
+  std::string str;
+  assert(str.max_size() == std::numeric_limits<size_t>::max() - alignment);
+
+#ifndef TEST_HAS_NO_CHAR8_T
+  std::u8string u8str;
+  assert(u8str.max_size() == std::numeric_limits<size_t>::max() - alignment);
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::wstring wstr;
+  assert(wstr.max_size() == std::numeric_limits<size_t>::max() / sizeof(wchar_t) - alignment);
+#endif
+
+  std::u16string u16str;
+  std::u32string u32str;
+  assert(u16str.max_size() == std::numeric_limits<size_t>::max() / 2 - alignment);
+  assert(u32str.max_size() == std::numeric_limits<size_t>::max() / 4 - alignment);
+}
+
+template <class = int>
+TEST_CONSTEXPR_CXX20 void half_size() {
+  std::string str;
+  assert(str.max_size() == std::numeric_limits<size_t>::max() / 2 - alignment);
+
+#ifndef TEST_HAS_NO_CHAR8_T
+  std::u8string u8str;
+  assert(u8str.max_size() == std::numeric_limits<size_t>::max() / 2 - alignment);
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::wstring wstr;
+  assert(wstr.max_size() == std::numeric_limits<size_t>::max() / std::max<size_t>(2ul, sizeof(wchar_t)) - alignment);
+#endif
+
+  std::u16string u16str;
+  std::u32string u32str;
+  assert(u16str.max_size() == std::numeric_limits<size_t>::max() / 2 - alignment);
+  assert(u32str.max_size() == std::numeric_limits<size_t>::max() / 4 - alignment);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+
+#if _LIBCPP_ABI_VERSION == 1
+
+# if defined(__x86_64__) || defined(__i386__)
+  full_size();
+# elif defined(__APPLE__) && defined(__aarch64__)
+  half_size();
+# elif defined(__arm__) || defined(__aarch64__)
+#   ifdef __BIG_ENDIAN__
+  half_size();
+#   else
+  full_size();
+#   endif
+# elif defined(__powerpc__) || defined(__powerpc64__)
+#   ifdef __BIG_ENDIAN__
+  half_size();
+#   else
+  full_size();
+#   endif
+# elif defined(__sparc64__)
+  half_size();
+# elif defined(_WIN32)
+  full_size();
+# else
+#   error "Your target system seems to be unsupported."
+# endif
+
+#else
+
+  half_size();
+
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.cons/copy_shrunk_long.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.cons/copy_shrunk_long.pass.cpp
new file mode 100644
index 0000000..7c875b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.cons/copy_shrunk_long.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(const basic_string<charT,traits,Allocator>& str);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  // Tests that a long string holding a SSO size string results in
+  // an SSO copy constructed value.
+  S s1("1234567890123456789012345678901234567890123456789012345678901234567890");
+  s1.resize(7);
+  S s2(s1);
+  LIBCPP_ASSERT(s2.__invariants());
+  assert(s2 == s1);
+  assert(s2.capacity() < sizeof(S));
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test<std::basic_string<char, std::char_traits<char>, test_allocator<char> > >();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+#if TEST_STD_VER > 17
+  static_assert(test<std::basic_string<char, std::char_traits<char>, test_allocator<char>>>());
+  static_assert(test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.cons/debug.iterator.substr.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.cons/debug.iterator.substr.pass.cpp
new file mode 100644
index 0000000..8eeb262
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.cons/debug.iterator.substr.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Check that basic_string(basic_string&&, size_type, Allocator) and
+// basic_string(basic_string&&, size_type, size_type, Allocator) inserts the container into the debug database
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <cassert>
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  using namespace std::string_literals;
+
+  {
+    std::string s = {"Banane"s, 1};
+    auto i        = s.begin();
+    assert(i[0] == 'a');
+    TEST_LIBCPP_ASSERT_FAILURE(i[5], "Attempted to subscript an iterator outside its valid range");
+  }
+  {
+    std::string s = {"Banane"s, 0, 5};
+    auto i        = s.begin();
+    assert(i[0] == 'B');
+    TEST_LIBCPP_ASSERT_FAILURE(i[5], "Attempted to subscript an iterator outside its valid range");
+  }
+  {
+    std::string s = {"long long string so no SSO"s, 21};
+    auto i        = s.begin();
+    assert(i[0] == 'o');
+    TEST_LIBCPP_ASSERT_FAILURE(i[5], "Attempted to subscript an iterator outside its valid range");
+  }
+  {
+    std::string s = {"long long string so no SSO"s, 0, 5};
+    auto i        = s.begin();
+    assert(i[0] == 'l');
+    TEST_LIBCPP_ASSERT_FAILURE(i[5], "Attempted to subscript an iterator outside its valid range");
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.add.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.add.pass.cpp
new file mode 100644
index 0000000..6d97ea1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.add.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Add to iterator out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string C;
+    C c(1, '\0');
+    C::iterator i = c.begin();
+    i += 1;
+    assert(i == c.end());
+    i = c.begin();
+    TEST_LIBCPP_ASSERT_FAILURE(i += 2, "Attempted to add/subtract an iterator outside its valid range");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > C;
+    C c(1, '\0');
+    C::iterator i = c.begin();
+    i += 1;
+    assert(i == c.end());
+    i = c.begin();
+    TEST_LIBCPP_ASSERT_FAILURE(i += 2, "Attempted to add/subtract an iterator outside its valid range");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.compare.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.compare.pass.cpp
new file mode 100644
index 0000000..025cd18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.compare.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Compare iterators from different containers with <.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string S;
+    S s1;
+    S s2;
+    TEST_LIBCPP_ASSERT_FAILURE(s1.begin() < s2.begin(), "Attempted to compare incomparable iterators");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    S s1;
+    S s2;
+    TEST_LIBCPP_ASSERT_FAILURE(s1.begin() < s2.begin(), "Attempted to compare incomparable iterators");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.decrement.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.decrement.pass.cpp
new file mode 100644
index 0000000..548a62b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.decrement.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Decrement iterator prior to begin.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string C;
+    C c(1, '\0');
+    C::iterator i = c.end();
+    --i;
+    assert(i == c.begin());
+    TEST_LIBCPP_ASSERT_FAILURE(--i, "Attempted to decrement a non-decrementable iterator");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > C;
+    C c(1, '\0');
+    C::iterator i = c.end();
+    --i;
+    assert(i == c.begin());
+    TEST_LIBCPP_ASSERT_FAILURE(--i, "Attempted to decrement a non-decrementable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.dereference.pass.cpp
new file mode 100644
index 0000000..fccf98c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.dereference.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Dereference non-dereferenceable iterator.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string C;
+    C c(1, '\0');
+    C::iterator i = c.end();
+    TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable iterator");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > C;
+    C c(1, '\0');
+    C::iterator i = c.end();
+    TEST_LIBCPP_ASSERT_FAILURE(*i, "Attempted to dereference a non-dereferenceable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.increment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.increment.pass.cpp
new file mode 100644
index 0000000..73366f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.increment.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Increment iterator past end.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string C;
+    C c(1, '\0');
+    C::iterator i = c.begin();
+    ++i;
+    assert(i == c.end());
+    TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable iterator");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > C;
+    C c(1, '\0');
+    C::iterator i = c.begin();
+    ++i;
+    assert(i == c.end());
+    TEST_LIBCPP_ASSERT_FAILURE(++i, "Attempted to increment a non-incrementable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.index.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.index.pass.cpp
new file mode 100644
index 0000000..13a2301
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.index.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Index iterator out of bounds.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  using T = decltype(uint8_t() - uint8_t());
+  {
+    typedef std::string C;
+    C c(1, '\0');
+    C::iterator i = c.begin();
+    assert(i[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(i[1], "Attempted to subscript an iterator outside its valid range");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > C;
+    C c(1, '\0');
+    C::iterator i = c.begin();
+    assert(i[0] == 0);
+    TEST_LIBCPP_ASSERT_FAILURE(i[1], "Attempted to subscript an iterator outside its valid range");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.subtract.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.subtract.pass.cpp
new file mode 100644
index 0000000..74b4048
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.iterators/debug.iterator.subtract.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Subtract iterators from different containers.
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::string S;
+    S s1;
+    S s2;
+    TEST_LIBCPP_ASSERT_FAILURE(s1.begin() - s2.begin(), "Attempted to subtract incompatible iterators");
+  }
+
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    S s1;
+    S s2;
+    TEST_LIBCPP_ASSERT_FAILURE(s1.begin() - s2.begin(), "Attempted to subtract incompatible iterators");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/assert.erase_iter.null.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/assert.erase_iter.null.pass.cpp
new file mode 100644
index 0000000..f22caff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/assert.erase_iter.null.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call erase(const_iterator position) with end()
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+    S l1("123");
+    S::const_iterator i = l1.end();
+    TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i), "string::erase(iterator) called with a non-dereferenceable iterator");
+  }
+
+  {
+    std::string l1("123");
+    std::string::const_iterator i = l1.end();
+    TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i), "string::erase(iterator) called with a non-dereferenceable iterator");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/assert.pop_back.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/assert.pop_back.pass.cpp
new file mode 100644
index 0000000..286e348
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/assert.pop_back.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void pop_back();
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::string s;
+    TEST_LIBCPP_ASSERT_FAILURE(s.pop_back(), "string::pop_back(): string is already empty");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/clear_and_shrink.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/clear_and_shrink.pass.cpp
new file mode 100644
index 0000000..c57cc73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/clear_and_shrink.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call __clear_and_shrink() and ensure string invariants hold
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::string l = "Long string so that allocation definitely, for sure, absolutely happens. Probably.";
+  std::string s = "short";
+
+  assert(l.__invariants());
+  assert(s.__invariants());
+
+  s.__clear_and_shrink();
+  assert(s.__invariants());
+  assert(s.size() == 0);
+
+  std::string::size_type cap = l.capacity();
+  l.__clear_and_shrink();
+  assert(l.__invariants());
+  assert(l.size() == 0);
+  assert(l.capacity() < cap);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.erase.iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.erase.iter.pass.cpp
new file mode 100644
index 0000000..1844dd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.erase.iter.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call erase(const_iterator position) with an iterator from another container
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+    {
+        std::string l1("123");
+        std::string l2("123");
+        std::string::const_iterator i = l2.begin();
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i), "string::erase(iterator) called with an iterator not referring to this string");
+    }
+
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+        S l1("123");
+        S l2("123");
+        S::const_iterator i = l2.begin();
+        TEST_LIBCPP_ASSERT_FAILURE(l1.erase(i), "string::erase(iterator) called with an iterator not referring to this string");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.erase.iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.erase.iter_iter.pass.cpp
new file mode 100644
index 0000000..8afe65b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.erase.iter_iter.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Call erase(const_iterator first, const_iterator last); with invalid iterators
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+#include "min_allocator.h"
+
+int main(int, char**) {
+
+    // With first iterator from another container
+    {
+        {
+            std::string l1("123");
+            std::string l2("123");
+            TEST_LIBCPP_ASSERT_FAILURE(
+                l1.erase(l2.cbegin(), l1.cbegin() + 1),
+                "string::erase(iterator,  iterator) called with an iterator not referring to this string");
+        }
+        {
+            typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+            S l1("123");
+            S l2("123");
+            TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l2.cbegin(), l1.cbegin() + 1),
+                                        "string::erase(iterator,  iterator) called with an iterator not referring to this string");
+        }
+    }
+
+    // With second iterator from another container
+    {
+        {
+            std::string l1("123");
+            std::string l2("123");
+            TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l1.cbegin(), l2.cbegin() + 1), "Attempted to compare incomparable iterators");
+        }
+        {
+            typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+            S l1("123");
+            S l2("123");
+            TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l1.cbegin(), l2.cbegin() + 1), "Attempted to compare incomparable iterators");
+        }
+    }
+
+    // With both iterators from another container
+    {
+        {
+            std::string l1("123");
+            std::string l2("123");
+            TEST_LIBCPP_ASSERT_FAILURE(
+                l1.erase(l2.cbegin(), l2.cbegin() + 1),
+                "string::erase(iterator,  iterator) called with an iterator not referring to this string");
+        }
+        {
+            typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+            S l1("123");
+            S l2("123");
+            TEST_LIBCPP_ASSERT_FAILURE(
+                l1.erase(l2.cbegin(), l2.cbegin() + 1),
+                "string::erase(iterator,  iterator) called with an iterator not referring to this string");
+        }
+    }
+
+    // With an invalid range
+    {
+        {
+            std::string l1("123");
+            TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l1.cbegin() + 1, l1.cbegin()),
+                                    "string::erase(first, last) called with invalid range");
+        }
+        {
+            typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+            S l1("123");
+            TEST_LIBCPP_ASSERT_FAILURE(l1.erase(l1.cbegin() + 1, l1.cbegin()),
+                                    "string::erase(first, last) called with invalid range");
+        }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_char.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_char.pass.cpp
new file mode 100644
index 0000000..7e0e236
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_char.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// iterator insert(const_iterator p, charT c);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+// TODO: Since string::insert(iter, char) is intantiated in the dylib, this test doesn't
+//       actually work if the dylib hasn't been built with debug assertions enabled.
+//       Until we overhaul the debug mode, mark this test as unsupported to avoid
+//       spurious CI failures.
+// REQUIRES: never-run
+
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    typedef std::string S;
+    S s;
+    S s2;
+    TEST_LIBCPP_ASSERT_FAILURE(s.insert(s2.begin(), '1'),
+        "string::insert(iterator, character) called with an iterator not referring to this string");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..0bd4b43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_iter_iter.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class InputIterator>
+//   iterator insert(const_iterator p, InputIterator first, InputIterator last);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::string v;
+    std::string v2;
+    char a[] = "123";
+    const int N = sizeof(a)/sizeof(a[0]);
+    TEST_LIBCPP_ASSERT_FAILURE(v.insert(v2.cbegin() + 10, a, a + N),
+                               "Attempted to add/subtract an iterator outside its valid range");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_size_char.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_size_char.pass.cpp
new file mode 100644
index 0000000..0f4d087
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/debug.insert.iter_size_char.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// iterator insert(const_iterator p, size_type n, charT c);
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03
+
+#include <string>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    std::string s;
+    std::string s2;
+    TEST_LIBCPP_ASSERT_FAILURE(
+        s.insert(s2.begin(), 1, 'a'),
+        "string::insert(iterator, n, value) called with an iterator not referring to this string");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/resize_default_initialized.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/resize_default_initialized.pass.cpp
new file mode 100644
index 0000000..d0ba43d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/basic.string/string.modifiers/resize_default_initialized.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// __resize_default_init(size_type)
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 void write_c_str(char *buf, int size) {
+  for (int i=0; i < size; ++i) {
+    buf[i] = 'a';
+  }
+  buf[size] = '\0';
+}
+
+TEST_CONSTEXPR_CXX20 void test_buffer_usage()
+{
+  {
+    unsigned buff_size = 125;
+    unsigned used_size = buff_size - 16;
+    std::string s;
+    s.__resize_default_init(buff_size);
+    write_c_str(&s[0], used_size);
+    assert(s.size() == buff_size);
+    assert(std::char_traits<char>().length(s.data()) == used_size);
+    s.__resize_default_init(used_size);
+    assert(s.size() == used_size);
+    assert(s.data()[used_size] == '\0');
+    for (unsigned i=0; i < used_size; ++i) {
+      assert(s[i] == 'a');
+    }
+  }
+}
+
+TEST_CONSTEXPR_CXX20 void test_basic() {
+  {
+    std::string s;
+    s.__resize_default_init(3);
+    assert(s.size() == 3);
+    assert(s.data()[3] == '\0');
+    for (int i=0; i < 3; ++i)
+      s[i] = 'a' + i;
+    s.__resize_default_init(1);
+    assert(s[0] == 'a');
+    assert(s.data()[1] == '\0');
+    assert(s.size() == 1);
+  }
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_basic();
+  test_buffer_usage();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/constexpr.cstring.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/constexpr.cstring.compile.pass.cpp
new file mode 100644
index 0000000..ad078c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/constexpr.cstring.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// Check that __constexpr_* cstring functions are actually constexpr
+
+#include <cstring>
+
+static_assert(std::__constexpr_strlen("Banane") == 6, "");
+static_assert(std::__constexpr_memcmp("Banane", "Banand", 6) == 1, "");
+static_assert(std::__constexpr_memcmp("Banane", "Banane", 6) == 0, "");
+static_assert(std::__constexpr_memcmp("Banane", "Bananf", 6) == -1, "");
+
+constexpr bool test_constexpr_wmemchr() {
+  const char str[] = "Banane";
+  return std::__constexpr_char_memchr(str, 'n', 6) == str + 2;
+}
+static_assert(test_constexpr_wmemchr(), "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/constexpr.cwchar.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/constexpr.cwchar.compile.pass.cpp
new file mode 100644
index 0000000..02feed0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/constexpr.cwchar.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// UNSUPPORTED: no-wide-characters
+
+// Check that __constexpr_* cwchar functions are actually constexpr
+
+#include <cwchar>
+
+static_assert(std::__constexpr_wcslen(L"Banane") == 6, "");
+static_assert(std::__constexpr_wmemcmp(L"Banane", L"Banand", 6) == 1, "");
+static_assert(std::__constexpr_wmemcmp(L"Banane", L"Banane", 6) == 0, "");
+static_assert(std::__constexpr_wmemcmp(L"Banane", L"Bananf", 6) == -1, "");
+
+constexpr bool test_constexpr_wmemchr() {
+  const wchar_t str[] = L"Banane";
+  return std::__constexpr_wmemchr(str, 'n', 6) == str + 2;
+}
+static_assert(test_constexpr_wmemchr(), "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cctype.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cctype.pass.cpp
new file mode 100644
index 0000000..07e91c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cctype.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cctype>
+
+#include <cctype>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cstring.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cstring.pass.cpp
new file mode 100644
index 0000000..3772175
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cstring.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstring>
+
+#include <cstring>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cuchar.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cuchar.pass.cpp
new file mode 100644
index 0000000..2c62af8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cuchar.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// <cuchar>
+
+#include <cuchar>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cwchar.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cwchar.pass.cpp
new file mode 100644
index 0000000..09afb02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cwchar.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// <cwchar>
+
+#include <cwchar>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cwctype.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cwctype.pass.cpp
new file mode 100644
index 0000000..f40fb3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/c.strings/version_cwctype.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// <cwctype>
+
+#include <cwctype>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/char.traits/char.traits.specializations/arbitrary_char_type.deprecated.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/char.traits/char.traits.specializations/arbitrary_char_type.deprecated.verify.cpp
new file mode 100644
index 0000000..ec6f34e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/char.traits/char.traits.specializations/arbitrary_char_type.deprecated.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<T> for arbitrary T
+
+// Make sure we issue deprecation warnings.
+
+#include <string>
+
+void f() {
+    std::char_traits<unsigned char> t1; (void)t1; // expected-warning{{'char_traits<unsigned char>' is deprecated}}
+    std::char_traits<signed char> t2; (void)t2; // expected-warning{{'char_traits<signed char>' is deprecated}}
+    std::char_traits<unsigned long> t3; (void)t3; // expected-warning{{'char_traits<unsigned long>' is deprecated}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/char.traits/char.traits.specializations/arbitrary_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/char.traits/char.traits.specializations/arbitrary_char_type.pass.cpp
new file mode 100644
index 0000000..c2de29d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/char.traits/char.traits.specializations/arbitrary_char_type.pass.cpp
@@ -0,0 +1,146 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<T> for arbitrary T
+
+// Non-standard but provided temporarily for users to migrate.
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-deprecated
+
+#include <string>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Char>
+TEST_CONSTEXPR_CXX20 bool test() {
+    static_assert(std::is_same<typename std::char_traits<Char>::char_type, Char>::value, "");
+    static_assert(std::is_same<typename std::char_traits<Char>::int_type, int>::value, "");
+    static_assert(std::is_same<typename std::char_traits<Char>::off_type, std::streamoff>::value, "");
+    static_assert(std::is_same<typename std::char_traits<Char>::pos_type, std::streampos>::value, "");
+    static_assert(std::is_same<typename std::char_traits<Char>::state_type, std::mbstate_t>::value, "");
+
+    assert(std::char_traits<Char>::to_int_type(Char('a')) == Char('a'));
+    assert(std::char_traits<Char>::to_int_type(Char('A')) == Char('A'));
+    assert(std::char_traits<Char>::to_int_type(0) == 0);
+
+    assert(std::char_traits<Char>::to_char_type(Char('a')) == Char('a'));
+    assert(std::char_traits<Char>::to_char_type(Char('A')) == Char('A'));
+    assert(std::char_traits<Char>::to_char_type(0) == 0);
+
+    assert(std::char_traits<Char>::eof() == EOF);
+
+    assert(std::char_traits<Char>::not_eof(Char('a')) == Char('a'));
+    assert(std::char_traits<Char>::not_eof(Char('A')) == Char('A'));
+    assert(std::char_traits<Char>::not_eof(0) == 0);
+    assert(std::char_traits<Char>::not_eof(std::char_traits<Char>::eof()) !=
+           std::char_traits<Char>::eof());
+
+    assert(std::char_traits<Char>::lt(Char('\0'), Char('A')) == (Char('\0') < Char('A')));
+    assert(std::char_traits<Char>::lt(Char('A'), Char('\0')) == (Char('A') < Char('\0')));
+    assert(std::char_traits<Char>::lt(Char('a'), Char('a')) == (Char('a') < Char('a')));
+    assert(std::char_traits<Char>::lt(Char('A'), Char('a')) == (Char('A') < Char('a')));
+    assert(std::char_traits<Char>::lt(Char('a'), Char('A')) == (Char('a') < Char('A')));
+
+    assert( std::char_traits<Char>::eq(Char('a'), Char('a')));
+    assert(!std::char_traits<Char>::eq(Char('a'), Char('A')));
+
+    assert( std::char_traits<Char>::eq_int_type(Char('a'), Char('a')));
+    assert(!std::char_traits<Char>::eq_int_type(Char('a'), Char('A')));
+    assert(!std::char_traits<Char>::eq_int_type(std::char_traits<Char>::eof(), Char('A')));
+    assert( std::char_traits<Char>::eq_int_type(std::char_traits<Char>::eof(), std::char_traits<Char>::eof()));
+
+    {
+        Char s1[] = {1, 2, 3, 0};
+        Char s2[] = {0};
+        assert(std::char_traits<Char>::length(s1) == 3);
+        assert(std::char_traits<Char>::length(s2) == 0);
+    }
+
+    {
+        Char s1[] = {1, 2, 3};
+        assert(std::char_traits<Char>::find(s1, 3, Char(1)) == s1);
+        assert(std::char_traits<Char>::find(s1, 3, Char(2)) == s1+1);
+        assert(std::char_traits<Char>::find(s1, 3, Char(3)) == s1+2);
+        assert(std::char_traits<Char>::find(s1, 3, Char(4)) == 0);
+        assert(std::char_traits<Char>::find(s1, 3, Char(0)) == 0);
+        assert(std::char_traits<Char>::find(NULL, 0, Char(0)) == 0);
+    }
+
+    {
+        Char s1[] = {1, 2, 3};
+        Char s2[3] = {0};
+        assert(std::char_traits<Char>::copy(s2, s1, 3) == s2);
+        assert(s2[0] == Char(1));
+        assert(s2[1] == Char(2));
+        assert(s2[2] == Char(3));
+        assert(std::char_traits<Char>::copy(NULL, s1, 0) == NULL);
+        assert(std::char_traits<Char>::copy(s1, NULL, 0) == s1);
+    }
+
+    {
+        Char s1[] = {1, 2, 3};
+        assert(std::char_traits<Char>::move(s1, s1+1, 2) == s1);
+        assert(s1[0] == Char(2));
+        assert(s1[1] == Char(3));
+        assert(s1[2] == Char(3));
+        s1[2] = Char(0);
+        assert(std::char_traits<Char>::move(s1+1, s1, 2) == s1+1);
+        assert(s1[0] == Char(2));
+        assert(s1[1] == Char(2));
+        assert(s1[2] == Char(3));
+        assert(std::char_traits<Char>::move(NULL, s1, 0) == NULL);
+        assert(std::char_traits<Char>::move(s1, NULL, 0) == s1);
+    }
+
+    {
+        Char s1[] = {0};
+        assert(std::char_traits<Char>::compare(s1, s1, 0) == 0);
+        assert(std::char_traits<Char>::compare(NULL, NULL, 0) == 0);
+
+        Char s2[] = {1, 0};
+        Char s3[] = {2, 0};
+        assert(std::char_traits<Char>::compare(s2, s2, 1) == 0);
+        assert(std::char_traits<Char>::compare(s2, s3, 1) < 0);
+        assert(std::char_traits<Char>::compare(s3, s2, 1) > 0);
+    }
+
+    {
+        Char s2[3] = {0};
+        assert(std::char_traits<Char>::assign(s2, 3, Char(5)) == s2);
+        assert(s2[0] == Char(5));
+        assert(s2[1] == Char(5));
+        assert(s2[2] == Char(5));
+        assert(std::char_traits<Char>::assign(NULL, 0, Char(5)) == NULL);
+    }
+
+    {
+        Char c = Char('\0');
+        std::char_traits<Char>::assign(c, Char('a'));
+        assert(c == Char('a'));
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test<unsigned char>();
+    test<signed char>();
+    test<unsigned long>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<unsigned char>());
+    static_assert(test<signed char>());
+    static_assert(test<unsigned long>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/string.view/assert.ctor.pointer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/string.view/assert.ctor.pointer.pass.cpp
new file mode 100644
index 0000000..f674cfa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/string.view/assert.ctor.pointer.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++11, c++14
+
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// Construct a string_view from a null pointer
+// constexpr basic_string_view( const CharT* s );
+
+#include <string_view>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  TEST_LIBCPP_ASSERT_FAILURE(std::string_view((char const*)NULL), "null pointer passed to non-null argument of char_traits<...>::length");
+  TEST_LIBCPP_ASSERT_FAILURE(std::string_view((char const*)nullptr), "null pointer passed to non-null argument of char_traits<...>::length");
+  TEST_LIBCPP_ASSERT_FAILURE(std::string_view((char const*)0), "null pointer passed to non-null argument of char_traits<...>::length");
+  {
+    std::string_view v;
+    TEST_LIBCPP_ASSERT_FAILURE(v == (char const*)nullptr, "null pointer passed to non-null argument of char_traits<...>::length");
+    TEST_LIBCPP_ASSERT_FAILURE(v == (char const*)NULL, "null pointer passed to non-null argument of char_traits<...>::length");
+    TEST_LIBCPP_ASSERT_FAILURE((char const*)nullptr == v, "null pointer passed to non-null argument of char_traits<...>::length");
+    TEST_LIBCPP_ASSERT_FAILURE((char const*)NULL == v, "null pointer passed to non-null argument of char_traits<...>::length");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/strings/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/strings/version.pass.cpp
new file mode 100644
index 0000000..9b549a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/strings/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+#include <string>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/atomic.availability.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/atomic.availability.verify.cpp
new file mode 100644
index 0000000..e96d461
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/atomic.availability.verify.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// REQUIRES: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+
+// Test the availability markup on the C++20 Synchronization Library
+// additions to <atomic>.
+
+#include <atomic>
+
+
+int main(int, char**)
+{
+    {
+        std::atomic<int> i(3);
+        std::memory_order m = std::memory_order_relaxed;
+
+        i.wait(4); // expected-error {{is unavailable}}
+        i.wait(4, m); // expected-error {{is unavailable}}
+        i.notify_one(); // expected-error {{is unavailable}}
+        i.notify_all(); // expected-error {{is unavailable}}
+
+        std::atomic_wait(&i, 4); // expected-error {{is unavailable}}
+        std::atomic_wait_explicit(&i, 4, m); // expected-error {{is unavailable}}
+        std::atomic_notify_one(&i); // expected-error {{is unavailable}}
+        std::atomic_notify_all(&i); // expected-error {{is unavailable}}
+    }
+
+    {
+        std::atomic<int> volatile i(3);
+        std::memory_order m = std::memory_order_relaxed;
+
+        i.wait(4); // expected-error {{is unavailable}}
+        i.wait(4, m); // expected-error {{is unavailable}}
+        i.notify_one(); // expected-error {{is unavailable}}
+        i.notify_all(); // expected-error {{is unavailable}}
+
+        std::atomic_wait(&i, 4); // expected-error {{is unavailable}}
+        std::atomic_wait_explicit(&i, 4, m); // expected-error {{is unavailable}}
+        std::atomic_notify_one(&i); // expected-error {{is unavailable}}
+        std::atomic_notify_all(&i); // expected-error {{is unavailable}}
+    }
+
+    {
+        std::atomic_flag flag;
+        bool b = false;
+        std::memory_order m = std::memory_order_relaxed;
+        flag.wait(b); // expected-error {{is unavailable}}
+        flag.wait(b, m); // expected-error {{is unavailable}}
+        flag.notify_one(); // expected-error {{is unavailable}}
+        flag.notify_all(); // expected-error {{is unavailable}}
+
+        std::atomic_flag_wait(&flag, b); // expected-error {{is unavailable}}
+        std::atomic_flag_wait_explicit(&flag, b, m); // expected-error {{is unavailable}}
+        std::atomic_flag_notify_one(&flag); // expected-error {{is unavailable}}
+        std::atomic_flag_notify_all(&flag); // expected-error {{is unavailable}}
+    }
+
+    {
+        std::atomic_flag volatile flag;
+        bool b = false;
+        std::memory_order m = std::memory_order_relaxed;
+        flag.wait(b); // expected-error {{is unavailable}}
+        flag.wait(b, m); // expected-error {{is unavailable}}
+        flag.notify_one(); // expected-error {{is unavailable}}
+        flag.notify_all(); // expected-error {{is unavailable}}
+
+        std::atomic_flag_wait(&flag, b); // expected-error {{is unavailable}}
+        std::atomic_flag_wait_explicit(&flag, b, m); // expected-error {{is unavailable}}
+        std::atomic_flag_notify_one(&flag); // expected-error {{is unavailable}}
+        std::atomic_flag_notify_all(&flag); // expected-error {{is unavailable}}
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/barrier.availability.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/barrier.availability.verify.cpp
new file mode 100644
index 0000000..8da39fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/barrier.availability.verify.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// REQUIRES: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+
+// Test the availability markup on std::barrier.
+
+#include <barrier>
+#include <utility>
+
+struct CompletionF {
+    void operator()() { }
+};
+
+int main(int, char**)
+{
+    // Availability markup on std::barrier<>
+    {
+        std::barrier<> b(10); // expected-error {{is unavailable}}
+        auto token = b.arrive(); // expected-error {{is unavailable}}
+        (void)b.arrive(10); // expected-error {{is unavailable}}
+        b.wait(std::move(token)); // expected-error {{is unavailable}}
+        b.arrive_and_wait(); // expected-error {{is unavailable}}
+        b.arrive_and_drop(); // expected-error {{is unavailable}}
+    }
+
+    // Availability markup on std::barrier<CompletionF> with non-default CompletionF
+    {
+        std::barrier<CompletionF> b(10); // expected-error {{is unavailable}}
+        auto token = b.arrive(); // expected-error {{is unavailable}}
+        (void)b.arrive(10); // expected-error {{is unavailable}}
+        b.wait(std::move(token)); // expected-error {{is unavailable}}
+        b.arrive_and_wait(); // expected-error {{is unavailable}}
+        b.arrive_and_drop(); // expected-error {{is unavailable}}
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.promise/assert.set_exception.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.promise/assert.set_exception.pass.cpp
new file mode 100644
index 0000000..c4090ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.promise/assert.set_exception.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, no-threads
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <future>
+
+// class promise<R>
+
+// void set_exception(exception_ptr p);
+// Test that a null exception_ptr is diagnosed.
+
+#include <future>
+#include <exception>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        std::promise<T> p;
+        TEST_LIBCPP_ASSERT_FAILURE(p.set_exception(std::exception_ptr()), "promise::set_exception: received nullptr");
+    }
+
+    {
+        typedef int& T;
+        std::promise<T> p;
+        TEST_LIBCPP_ASSERT_FAILURE(p.set_exception(std::exception_ptr()), "promise::set_exception: received nullptr");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.promise/assert.set_exception_at_thread_exit.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.promise/assert.set_exception_at_thread_exit.pass.cpp
new file mode 100644
index 0000000..a4c21ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.promise/assert.set_exception_at_thread_exit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, no-threads
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <future>
+
+// class promise<R>
+
+// void set_exception_on_thread_exit(exception_ptr p);
+// Test that a null exception_ptr is diagnosed.
+
+#include <future>
+#include <exception>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    {
+        typedef int T;
+        std::promise<T> p;
+        TEST_LIBCPP_ASSERT_FAILURE(p.set_exception_at_thread_exit(std::exception_ptr()), "promise::set_exception_at_thread_exit: received nullptr");
+    }
+
+    {
+        typedef int& T;
+        std::promise<T> p;
+        TEST_LIBCPP_ASSERT_FAILURE(p.set_exception_at_thread_exit(std::exception_ptr()), "promise::set_exception_at_thread_exit: received nullptr");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.task/types.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.task/types.pass.cpp
new file mode 100644
index 0000000..1f17d74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/futures.task/types.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// template<class R, class... ArgTypes>
+//     class packaged_task<R(ArgTypes...)>
+// {
+// public:
+//     typedef R result_type; // extension
+
+// This is a libc++ extension.
+
+#include <future>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::packaged_task<A(int, char)>::result_type, A>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/futures/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/version.pass.cpp
new file mode 100644
index 0000000..b32f757
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/futures/version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+#include <future>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/latch.availability.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/latch.availability.verify.cpp
new file mode 100644
index 0000000..8555e0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/latch.availability.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// REQUIRES: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+
+// Test the availability markup on std::latch.
+
+#include <latch>
+
+
+int main(int, char**)
+{
+    std::latch latch(10);
+    latch.count_down(); // expected-error {{is unavailable}}
+    latch.count_down(3); // expected-error {{is unavailable}}
+    latch.wait(); // expected-error {{is unavailable}}
+    latch.arrive_and_wait(); // expected-error {{is unavailable}}
+    latch.arrive_and_wait(3); // expected-error {{is unavailable}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/semaphore.availability.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/semaphore.availability.verify.cpp
new file mode 100644
index 0000000..a6d5c36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/semaphore.availability.verify.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// REQUIRES: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+
+// Test the availability markup on std::counting_semaphore and std::binary_semaphore.
+
+#include <chrono>
+#include <semaphore>
+
+
+int main(int, char**)
+{
+    {
+        // Tests for std::counting_semaphore with non-default template argument
+        std::counting_semaphore<20> sem(10);
+        sem.release(); // expected-error {{is unavailable}}
+        sem.release(5); // expected-error {{is unavailable}}
+        sem.acquire(); // expected-error {{is unavailable}}
+        sem.try_acquire_for(std::chrono::milliseconds{3}); // expected-error 1-2 {{is unavailable}}
+        sem.try_acquire(); // expected-error {{is unavailable}}
+        sem.try_acquire_until(std::chrono::steady_clock::now()); // expected-error 1-2 {{is unavailable}}
+    }
+    {
+        // Tests for std::counting_semaphore with default template argument
+        std::counting_semaphore<> sem(10);
+        sem.release(); // expected-error {{is unavailable}}
+        sem.release(5); // expected-error {{is unavailable}}
+        sem.acquire(); // expected-error {{is unavailable}}
+        sem.try_acquire_for(std::chrono::milliseconds{3}); // expected-error 1-2 {{is unavailable}}
+        sem.try_acquire(); // expected-error {{is unavailable}}
+        sem.try_acquire_until(std::chrono::steady_clock::now()); // expected-error 1-2 {{is unavailable}}
+    }
+    {
+        // Tests for std::binary_semaphore
+        std::binary_semaphore sem(10);
+        sem.release(); // expected-error {{is unavailable}}
+        sem.release(5); // expected-error {{is unavailable}}
+        sem.acquire(); // expected-error {{is unavailable}}
+        sem.try_acquire_for(std::chrono::milliseconds{3}); // expected-error 1-2 {{is unavailable}}
+        sem.try_acquire(); // expected-error {{is unavailable}}
+        sem.try_acquire_until(std::chrono::steady_clock::now()); // expected-error 1-2 {{is unavailable}}
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.barrier/version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.barrier/version.compile.pass.cpp
new file mode 100644
index 0000000..7890787
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.barrier/version.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <barrier>
+
+#include <barrier>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/PR30202_notify_from_pthread_created_thread.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/PR30202_notify_from_pthread_created_thread.pass.cpp
new file mode 100644
index 0000000..0d682cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/PR30202_notify_from_pthread_created_thread.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// REQUIRES: libcpp-has-thread-api-pthread
+
+// notify_all_at_thread_exit(...) requires move semantics to transfer the
+// unique_lock.
+// UNSUPPORTED: c++03
+
+// PR30202 was fixed starting in macosx10.13.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <condition_variable>
+
+// void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
+
+// Test that this function works with threads that were not created by
+// std::thread. See https://llvm.org/PR30202
+
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+#include <pthread.h>
+
+#include "test_macros.h"
+
+std::condition_variable cv;
+std::mutex mut;
+bool exited = false;
+
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::high_resolution_clock Clock;
+
+void* func(void*)
+{
+    std::unique_lock<std::mutex> lk(mut);
+    std::notify_all_at_thread_exit(cv, std::move(lk));
+    std::this_thread::sleep_for(ms(300));
+    exited = true;
+    return nullptr;
+}
+
+int main(int, char**)
+{
+    {
+    std::unique_lock<std::mutex> lk(mut);
+    pthread_t id;
+    int res = pthread_create(&id, 0, &func, nullptr);
+    assert(res == 0);
+    Clock::time_point t0 = Clock::now();
+    assert(exited == false);
+    cv.wait(lk);
+    Clock::time_point t1 = Clock::now();
+    assert(exited);
+    assert(t1-t0 > ms(250));
+    pthread_join(id, 0);
+    }
+    exited = false;
+    {
+    std::unique_lock<std::mutex> lk(mut);
+    std::thread t(&func, nullptr);
+    Clock::time_point t0 = Clock::now();
+    assert(exited == false);
+    cv.wait(lk);
+    Clock::time_point t1 = Clock::now();
+    assert(exited);
+    assert(t1-t0 > ms(250));
+    t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/thread.condition.condvar/native_handle.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/thread.condition.condvar/native_handle.pass.cpp
new file mode 100644
index 0000000..374aa2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/thread.condition.condvar/native_handle.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, libcpp-has-thread-api-external
+
+// XFAIL: windows
+
+// <condition_variable>
+
+// class condition_variable;
+
+// typedef pthread_cond_t* native_handle_type;
+// native_handle_type native_handle();
+
+#include <condition_variable>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::condition_variable::native_handle_type,
+                                pthread_cond_t*>::value), "");
+    std::condition_variable cv;
+    std::condition_variable::native_handle_type h = cv.native_handle();
+    assert(h != nullptr);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/version.pass.cpp
new file mode 100644
index 0000000..114f0b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.condition/version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+#include <condition_variable>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.latch/version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.latch/version.compile.pass.cpp
new file mode 100644
index 0000000..365ee92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.latch/version.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <latch>
+
+#include <latch>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.lock/thread.lock.guard/nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.lock/thread.lock.guard/nodiscard.verify.cpp
new file mode 100644
index 0000000..c0cad32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.lock/thread.lock.guard/nodiscard.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// [[nodiscard]] isn't supported in C++03 (not even as an extension)
+// UNSUPPORTED: c++03
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// [[nodiscard]] explicit lock_guard(mutex_type& m);
+// [[nodiscard]] lock_guard(mutex_type& m, adopt_lock_t);
+
+// Test that we properly apply [[nodiscard]] to lock_guard's constructors,
+// which is a libc++ extension.
+
+#include <mutex>
+
+int main(int, char**) {
+    std::mutex m;
+    std::lock_guard<std::mutex>{m}; // expected-warning {{ignoring temporary created by a constructor declared with 'nodiscard' attribute}}
+    std::lock_guard<std::mutex>{m, std::adopt_lock}; // expected-warning {{ignoring temporary created by a constructor declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/native_handle.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/native_handle.pass.cpp
new file mode 100644
index 0000000..3de6635
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/native_handle.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, libcpp-has-thread-api-external
+
+// XFAIL: windows
+
+// <mutex>
+
+// class mutex;
+
+// typedef pthread_mutex_t* native_handle_type;
+// native_handle_type native_handle();
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::mutex m;
+    pthread_mutex_t* h = m.native_handle();
+    assert(h);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/native_handle.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/native_handle.pass.cpp
new file mode 100644
index 0000000..d76b3d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/native_handle.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, libcpp-has-thread-api-external
+
+// XFAIL: windows
+
+// <mutex>
+
+// class recursive_mutex;
+
+// typedef pthread_mutex_t* native_handle_type;
+// native_handle_type native_handle();
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::recursive_mutex m;
+    pthread_mutex_t* h = m.native_handle();
+    assert(h);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_annotations_not_enabled.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_annotations_not_enabled.pass.cpp
new file mode 100644
index 0000000..02072f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_annotations_not_enabled.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// This test does not define _LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS so it
+// should compile without any warnings or errors even though this pattern is not
+// understood by the thread safety annotations.
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::mutex m;
+  m.lock();
+  {
+    std::unique_lock<std::mutex> g(m, std::adopt_lock);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_lock_guard.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_lock_guard.pass.cpp
new file mode 100644
index 0000000..1c1f364
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_lock_guard.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// On Windows Clang bugs out when both __declspec and __attribute__ are present,
+// the processing goes awry preventing the definition of the types.
+// XFAIL: msvc
+
+// UNSUPPORTED: no-threads
+// REQUIRES: thread-safety
+
+// <mutex>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS
+
+#include <mutex>
+
+#include "test_macros.h"
+
+std::mutex m;
+int foo __attribute__((guarded_by(m)));
+
+static void scoped() {
+#if TEST_STD_VER >= 17
+  std::scoped_lock<std::mutex> lock(m);
+  foo++;
+#endif
+}
+
+int main(int, char**) {
+  scoped();
+  std::lock_guard<std::mutex> lock(m);
+  foo++;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_lock_unlock.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_lock_unlock.pass.cpp
new file mode 100644
index 0000000..ddfe326
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_lock_unlock.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// On Windows Clang bugs out when both __declspec and __attribute__ are present,
+// the processing goes awry preventing the definition of the types.
+// XFAIL: msvc
+
+// UNSUPPORTED: no-threads
+// REQUIRES: thread-safety
+
+// <mutex>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS
+
+#include <mutex>
+
+#include "test_macros.h"
+
+std::mutex m;
+int foo __attribute__((guarded_by(m)));
+
+int main(int, char**) {
+  m.lock();
+  foo++;
+  m.unlock();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_missing_unlock.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_missing_unlock.fail.cpp
new file mode 100644
index 0000000..07a51b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_missing_unlock.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// On Windows Clang bugs out when both __declspec and __attribute__ are present,
+// the processing goes awry preventing the definition of the types.
+// XFAIL: msvc
+
+// UNSUPPORTED: no-threads
+// REQUIRES: thread-safety
+
+// <mutex>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS
+
+#include <mutex>
+
+std::mutex m;
+
+int main(int, char**) {
+  m.lock();
+
+  return 0;
+} // expected-error {{mutex 'm' is still held at the end of function}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_requires_capability.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_requires_capability.pass.cpp
new file mode 100644
index 0000000..81ce3b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/thread_safety_requires_capability.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// On Windows Clang bugs out when both __declspec and __attribute__ are present,
+// the processing goes awry preventing the definition of the types.
+// XFAIL: msvc
+
+// UNSUPPORTED: no-threads
+// REQUIRES: thread-safety
+
+// <mutex>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS
+
+#include <mutex>
+
+#include "test_macros.h"
+
+std::mutex m;
+int foo __attribute__((guarded_by(m)));
+
+void increment() __attribute__((requires_capability(m))) {
+  foo++;
+}
+
+int main(int, char**) {
+  m.lock();
+  increment();
+  m.unlock();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/version.pass.cpp
new file mode 100644
index 0000000..fca02ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.mutex/version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+#include <mutex>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.semaphore/version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.semaphore/version.compile.pass.cpp
new file mode 100644
index 0000000..3f59448
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.semaphore/version.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <semaphore>
+
+#include <semaphore>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/create_late.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/create_late.pass.cpp
new file mode 100644
index 0000000..847b354
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/create_late.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+#include "make_test_thread.h"
+
+void func() {}
+
+struct T {
+  ~T() {
+    // __thread_local_data is expected to be destroyed as it was created
+    // from the main(). Now trigger another access.
+    support::make_test_thread(func).join();
+  }
+} t;
+
+int main(int, char**) {
+  // Triggers construction of __thread_local_data.
+  support::make_test_thread(func).join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.class/thread.thread.member/native_handle.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.class/thread.thread.member/native_handle.pass.cpp
new file mode 100644
index 0000000..96ec333
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.class/thread.thread.member/native_handle.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, libcpp-has-thread-api-external
+
+// XFAIL: windows
+
+// <thread>
+
+// class thread
+
+// native_handle_type native_handle();
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0(g);
+        pthread_t pid = t0.native_handle();
+        assert(pid != 0);
+        t0.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.class/types.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.class/types.pass.cpp
new file mode 100644
index 0000000..bb60647
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.class/types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, libcpp-has-thread-api-external
+// REQUIRES: libcpp-has-thread-api-pthread
+
+// <thread>
+
+// class thread
+// {
+// public:
+//     typedef pthread_t native_handle_type;
+//     ...
+// };
+
+#include <thread>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::thread::native_handle_type, pthread_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.pass.cpp
new file mode 100644
index 0000000..59bcec4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// Until 58a0a70fb2f1, this_thread::sleep_for could sometimes get interrupted
+// by signals and this test would fail spuriously. Disable the test on the
+// corresponding system libraries.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// ALLOW_RETRIES: 3
+
+// <thread>
+
+// template <class Rep, class Period>
+//   void sleep_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <thread>
+#include <cassert>
+#include <chrono>
+
+int main(int, char**)
+{
+  typedef std::chrono::system_clock Clock;
+  typedef Clock::time_point time_point;
+  std::chrono::milliseconds ms(500);
+  time_point t0 = Clock::now();
+  std::this_thread::sleep_for(ms);
+  time_point t1 = Clock::now();
+  // NOTE: Operating systems are (by default) best effort and therefore we may
+  // have slept longer, perhaps much longer than we requested.
+  assert(t1 - t0 >= ms);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.signals.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.signals.pass.cpp
new file mode 100644
index 0000000..5e5005c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/thread.thread.this/sleep_for.signals.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// This test uses the POSIX header <sys/time.h> which Windows doesn't provide
+// UNSUPPORTED: windows
+
+// Until 58a0a70fb2f1, this_thread::sleep_for misbehaves when interrupted by
+// a signal, as tested here. Disable the test on the corresponding system
+// libraries.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// ALLOW_RETRIES: 3
+
+// <thread>
+
+// template <class Rep, class Period>
+//   void sleep_for(const chrono::duration<Rep, Period>& rel_time);
+
+// This test ensures that we sleep for the right amount of time even when
+// we get interrupted by a signal, as fixed in 58a0a70fb2f1.
+
+#include <thread>
+#include <cassert>
+#include <chrono>
+#include <cstring> // for std::memset
+
+#include <signal.h>
+#include <sys/time.h>
+
+#include "test_macros.h"
+
+void sig_action(int) {}
+
+int main(int, char**)
+{
+  int ec;
+  struct sigaction action;
+  action.sa_handler = &sig_action;
+  sigemptyset(&action.sa_mask);
+  action.sa_flags = 0;
+
+  ec = sigaction(SIGALRM, &action, nullptr);
+  assert(!ec);
+
+  struct itimerval it;
+  std::memset(&it, 0, sizeof(itimerval));
+  it.it_value.tv_sec = 0;
+  it.it_value.tv_usec = 250000;
+  // This will result in a SIGALRM getting fired resulting in the nanosleep
+  // inside sleep_for getting EINTR.
+  ec = setitimer(ITIMER_REAL, &it, nullptr);
+  assert(!ec);
+
+  typedef std::chrono::system_clock Clock;
+  typedef Clock::time_point time_point;
+  std::chrono::milliseconds ms(500);
+  time_point t0 = Clock::now();
+  std::this_thread::sleep_for(ms);
+  time_point t1 = Clock::now();
+  // NOTE: Operating systems are (by default) best effort and therefore we may
+  // have slept longer, perhaps much longer than we requested.
+  assert(t1 - t0 >= ms);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/version.pass.cpp
new file mode 100644
index 0000000..7c6b2f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/thread/thread.threads/version.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+#include <thread>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/time/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/time/version.pass.cpp
new file mode 100644
index 0000000..5e18316
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/time/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+#include <chrono>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes.sh.cpp
new file mode 100644
index 0000000..5eaca97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes.sh.cpp
@@ -0,0 +1,570 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that we don't remove transitive includes of public C++ headers in the library accidentally.
+// When we remove a transitive public include, clients tend to break because they don't always
+// properly include what they use. Note that we don't check which system (C) headers are
+// included transitively, because that is too unstable across platforms, and hence difficult
+// to test for.
+//
+// This is not meant to block libc++ from removing unused transitive includes
+// forever, however we do try to group removals for a couple of releases
+// to avoid breaking users at every release.
+
+// This test doesn't support being run when some headers are not available, since we
+// would need to add significant complexity to make that work.
+// UNSUPPORTED: no-localization, no-threads, no-wide-characters, no-filesystem, libcpp-has-no-incomplete-format
+
+// When built with modules, this test doesn't work because --trace-includes doesn't
+// report the stack of includes correctly.
+// UNSUPPORTED: modules-build
+
+// This test uses --trace-includes, which is not supported by GCC.
+// UNSUPPORTED: gcc
+
+// This test doesn't work on AIX, but it should. Needs investigation.
+// XFAIL: buildhost=aix
+
+// This test is not supported when we remove the transitive includes provided for backwards
+// compatibility. When we bulk-remove them, we'll adjust the includes that are expected by
+// this test instead.
+// UNSUPPORTED: transitive-includes-disabled
+
+// Prevent <ext/hash_map> from generating deprecated warnings for this test.
+#if defined(__DEPRECATED)
+#    undef __DEPRECATED
+#endif
+
+/*
+BEGIN-SCRIPT
+
+import re
+
+# To re-generate the list of expected headers, temporarily set this to True, re-generate
+# the file and run this test.
+# Note that this needs to be done for all supported language versions of libc++:
+# for std in c++03 c++11 c++14 c++17 c++20 c++2b; do <build>/bin/llvm-lit --param std=$std ${path_to_this_file}; done
+regenerate_expected_results = False
+# Used because the sequence of tokens RUN : can't appear anywhere or it'll confuse Lit.
+RUN = "RUN"
+
+print(f"// {RUN}: mkdir %t")
+
+for i, header in enumerate(public_headers):
+  if header.endswith('.h'): # Skip C compatibility or detail headers
+    continue
+
+  normalized_header = re.sub('/', '_', header)
+  print(f"// {RUN}: %{{cxx}} %s %{{flags}} %{{compile_flags}} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_{i} 2> %t/header.{normalized_header}")
+  print(f"#if defined(TEST_{i})")
+  print(f"#include <{header}>")
+  print("#endif")
+
+if regenerate_expected_results:
+  print(f"// {RUN}: %{{python}} %S/transitive_includes_to_csv.py %t > %S/transitive_includes/%{{cxx_std}}.csv")
+else:
+  print(f"// {RUN}: %{{python}} %S/transitive_includes_to_csv.py %t > %t/transitive_includes.csv")
+  print(f"// {RUN}: diff -w %S/transitive_includes/%{{cxx_std}}.csv %t/transitive_includes.csv")
+
+END-SCRIPT
+*/
+
+// DO NOT MANUALLY EDIT ANYTHING BETWEEN THE MARKERS BELOW
+// GENERATED-MARKER
+// RUN: mkdir %t
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_0 2> %t/header.algorithm
+#if defined(TEST_0)
+#include <algorithm>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_1 2> %t/header.any
+#if defined(TEST_1)
+#include <any>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_2 2> %t/header.array
+#if defined(TEST_2)
+#include <array>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_3 2> %t/header.atomic
+#if defined(TEST_3)
+#include <atomic>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_4 2> %t/header.barrier
+#if defined(TEST_4)
+#include <barrier>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_5 2> %t/header.bit
+#if defined(TEST_5)
+#include <bit>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_6 2> %t/header.bitset
+#if defined(TEST_6)
+#include <bitset>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_7 2> %t/header.cassert
+#if defined(TEST_7)
+#include <cassert>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_8 2> %t/header.ccomplex
+#if defined(TEST_8)
+#include <ccomplex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_9 2> %t/header.cctype
+#if defined(TEST_9)
+#include <cctype>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_10 2> %t/header.cerrno
+#if defined(TEST_10)
+#include <cerrno>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_11 2> %t/header.cfenv
+#if defined(TEST_11)
+#include <cfenv>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_12 2> %t/header.cfloat
+#if defined(TEST_12)
+#include <cfloat>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_13 2> %t/header.charconv
+#if defined(TEST_13)
+#include <charconv>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_14 2> %t/header.chrono
+#if defined(TEST_14)
+#include <chrono>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_15 2> %t/header.cinttypes
+#if defined(TEST_15)
+#include <cinttypes>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_16 2> %t/header.ciso646
+#if defined(TEST_16)
+#include <ciso646>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_17 2> %t/header.climits
+#if defined(TEST_17)
+#include <climits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_18 2> %t/header.clocale
+#if defined(TEST_18)
+#include <clocale>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_19 2> %t/header.cmath
+#if defined(TEST_19)
+#include <cmath>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_20 2> %t/header.codecvt
+#if defined(TEST_20)
+#include <codecvt>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_21 2> %t/header.compare
+#if defined(TEST_21)
+#include <compare>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_22 2> %t/header.complex
+#if defined(TEST_22)
+#include <complex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_24 2> %t/header.concepts
+#if defined(TEST_24)
+#include <concepts>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_25 2> %t/header.condition_variable
+#if defined(TEST_25)
+#include <condition_variable>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_26 2> %t/header.coroutine
+#if defined(TEST_26)
+#include <coroutine>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_27 2> %t/header.csetjmp
+#if defined(TEST_27)
+#include <csetjmp>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_28 2> %t/header.csignal
+#if defined(TEST_28)
+#include <csignal>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_29 2> %t/header.cstdarg
+#if defined(TEST_29)
+#include <cstdarg>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_30 2> %t/header.cstdbool
+#if defined(TEST_30)
+#include <cstdbool>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_31 2> %t/header.cstddef
+#if defined(TEST_31)
+#include <cstddef>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_32 2> %t/header.cstdint
+#if defined(TEST_32)
+#include <cstdint>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_33 2> %t/header.cstdio
+#if defined(TEST_33)
+#include <cstdio>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_34 2> %t/header.cstdlib
+#if defined(TEST_34)
+#include <cstdlib>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_35 2> %t/header.cstring
+#if defined(TEST_35)
+#include <cstring>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_36 2> %t/header.ctgmath
+#if defined(TEST_36)
+#include <ctgmath>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_37 2> %t/header.ctime
+#if defined(TEST_37)
+#include <ctime>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_39 2> %t/header.cuchar
+#if defined(TEST_39)
+#include <cuchar>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_40 2> %t/header.cwchar
+#if defined(TEST_40)
+#include <cwchar>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_41 2> %t/header.cwctype
+#if defined(TEST_41)
+#include <cwctype>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_42 2> %t/header.deque
+#if defined(TEST_42)
+#include <deque>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_44 2> %t/header.exception
+#if defined(TEST_44)
+#include <exception>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_45 2> %t/header.execution
+#if defined(TEST_45)
+#include <execution>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_46 2> %t/header.expected
+#if defined(TEST_46)
+#include <expected>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_48 2> %t/header.filesystem
+#if defined(TEST_48)
+#include <filesystem>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_50 2> %t/header.format
+#if defined(TEST_50)
+#include <format>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_51 2> %t/header.forward_list
+#if defined(TEST_51)
+#include <forward_list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_52 2> %t/header.fstream
+#if defined(TEST_52)
+#include <fstream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_53 2> %t/header.functional
+#if defined(TEST_53)
+#include <functional>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_54 2> %t/header.future
+#if defined(TEST_54)
+#include <future>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_55 2> %t/header.initializer_list
+#if defined(TEST_55)
+#include <initializer_list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_57 2> %t/header.iomanip
+#if defined(TEST_57)
+#include <iomanip>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_58 2> %t/header.ios
+#if defined(TEST_58)
+#include <ios>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_59 2> %t/header.iosfwd
+#if defined(TEST_59)
+#include <iosfwd>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_60 2> %t/header.iostream
+#if defined(TEST_60)
+#include <iostream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_61 2> %t/header.istream
+#if defined(TEST_61)
+#include <istream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_62 2> %t/header.iterator
+#if defined(TEST_62)
+#include <iterator>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_63 2> %t/header.latch
+#if defined(TEST_63)
+#include <latch>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_64 2> %t/header.limits
+#if defined(TEST_64)
+#include <limits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_66 2> %t/header.list
+#if defined(TEST_66)
+#include <list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_67 2> %t/header.locale
+#if defined(TEST_67)
+#include <locale>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_69 2> %t/header.map
+#if defined(TEST_69)
+#include <map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_71 2> %t/header.memory
+#if defined(TEST_71)
+#include <memory>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_72 2> %t/header.memory_resource
+#if defined(TEST_72)
+#include <memory_resource>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_73 2> %t/header.mutex
+#if defined(TEST_73)
+#include <mutex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_74 2> %t/header.new
+#if defined(TEST_74)
+#include <new>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_75 2> %t/header.numbers
+#if defined(TEST_75)
+#include <numbers>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_76 2> %t/header.numeric
+#if defined(TEST_76)
+#include <numeric>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_77 2> %t/header.optional
+#if defined(TEST_77)
+#include <optional>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_78 2> %t/header.ostream
+#if defined(TEST_78)
+#include <ostream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_79 2> %t/header.queue
+#if defined(TEST_79)
+#include <queue>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_80 2> %t/header.random
+#if defined(TEST_80)
+#include <random>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_81 2> %t/header.ranges
+#if defined(TEST_81)
+#include <ranges>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_82 2> %t/header.ratio
+#if defined(TEST_82)
+#include <ratio>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_83 2> %t/header.regex
+#if defined(TEST_83)
+#include <regex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_84 2> %t/header.scoped_allocator
+#if defined(TEST_84)
+#include <scoped_allocator>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_85 2> %t/header.semaphore
+#if defined(TEST_85)
+#include <semaphore>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_86 2> %t/header.set
+#if defined(TEST_86)
+#include <set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_88 2> %t/header.shared_mutex
+#if defined(TEST_88)
+#include <shared_mutex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_89 2> %t/header.source_location
+#if defined(TEST_89)
+#include <source_location>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_90 2> %t/header.span
+#if defined(TEST_90)
+#include <span>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_91 2> %t/header.sstream
+#if defined(TEST_91)
+#include <sstream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_92 2> %t/header.stack
+#if defined(TEST_92)
+#include <stack>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_96 2> %t/header.stdexcept
+#if defined(TEST_96)
+#include <stdexcept>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_100 2> %t/header.streambuf
+#if defined(TEST_100)
+#include <streambuf>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_101 2> %t/header.string
+#if defined(TEST_101)
+#include <string>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_103 2> %t/header.string_view
+#if defined(TEST_103)
+#include <string_view>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_104 2> %t/header.strstream
+#if defined(TEST_104)
+#include <strstream>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_105 2> %t/header.system_error
+#if defined(TEST_105)
+#include <system_error>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_107 2> %t/header.thread
+#if defined(TEST_107)
+#include <thread>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_108 2> %t/header.tuple
+#if defined(TEST_108)
+#include <tuple>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_109 2> %t/header.type_traits
+#if defined(TEST_109)
+#include <type_traits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_110 2> %t/header.typeindex
+#if defined(TEST_110)
+#include <typeindex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_111 2> %t/header.typeinfo
+#if defined(TEST_111)
+#include <typeinfo>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_113 2> %t/header.unordered_map
+#if defined(TEST_113)
+#include <unordered_map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_114 2> %t/header.unordered_set
+#if defined(TEST_114)
+#include <unordered_set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_115 2> %t/header.utility
+#if defined(TEST_115)
+#include <utility>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_116 2> %t/header.valarray
+#if defined(TEST_116)
+#include <valarray>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_117 2> %t/header.variant
+#if defined(TEST_117)
+#include <variant>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_118 2> %t/header.vector
+#if defined(TEST_118)
+#include <vector>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_119 2> %t/header.version
+#if defined(TEST_119)
+#include <version>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_122 2> %t/header.experimental_algorithm
+#if defined(TEST_122)
+#include <experimental/algorithm>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_123 2> %t/header.experimental_coroutine
+#if defined(TEST_123)
+#include <experimental/coroutine>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_124 2> %t/header.experimental_deque
+#if defined(TEST_124)
+#include <experimental/deque>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_125 2> %t/header.experimental_forward_list
+#if defined(TEST_125)
+#include <experimental/forward_list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_126 2> %t/header.experimental_functional
+#if defined(TEST_126)
+#include <experimental/functional>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_127 2> %t/header.experimental_iterator
+#if defined(TEST_127)
+#include <experimental/iterator>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_128 2> %t/header.experimental_list
+#if defined(TEST_128)
+#include <experimental/list>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_129 2> %t/header.experimental_map
+#if defined(TEST_129)
+#include <experimental/map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_130 2> %t/header.experimental_memory_resource
+#if defined(TEST_130)
+#include <experimental/memory_resource>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_131 2> %t/header.experimental_propagate_const
+#if defined(TEST_131)
+#include <experimental/propagate_const>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_132 2> %t/header.experimental_regex
+#if defined(TEST_132)
+#include <experimental/regex>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_133 2> %t/header.experimental_set
+#if defined(TEST_133)
+#include <experimental/set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_134 2> %t/header.experimental_simd
+#if defined(TEST_134)
+#include <experimental/simd>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_135 2> %t/header.experimental_string
+#if defined(TEST_135)
+#include <experimental/string>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_136 2> %t/header.experimental_type_traits
+#if defined(TEST_136)
+#include <experimental/type_traits>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_137 2> %t/header.experimental_unordered_map
+#if defined(TEST_137)
+#include <experimental/unordered_map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_138 2> %t/header.experimental_unordered_set
+#if defined(TEST_138)
+#include <experimental/unordered_set>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_139 2> %t/header.experimental_utility
+#if defined(TEST_139)
+#include <experimental/utility>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_140 2> %t/header.experimental_vector
+#if defined(TEST_140)
+#include <experimental/vector>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_141 2> %t/header.ext_hash_map
+#if defined(TEST_141)
+#include <ext/hash_map>
+#endif
+// RUN: %{cxx} %s %{flags} %{compile_flags} --trace-includes -fshow-skipped-includes -fsyntax-only -DTEST_142 2> %t/header.ext_hash_set
+#if defined(TEST_142)
+#include <ext/hash_set>
+#endif
+// RUN: %{python} %S/transitive_includes_to_csv.py %t > %t/transitive_includes.csv
+// RUN: diff -w %S/transitive_includes/%{cxx_std}.csv %t/transitive_includes.csv
+// GENERATED-MARKER
diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx03.csv b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx03.csv
new file mode 100644
index 0000000..58fe49c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx03.csv
@@ -0,0 +1,961 @@
+algorithm atomic
+algorithm bit
+algorithm chrono
+algorithm climits
+algorithm concepts
+algorithm cstddef
+algorithm cstdint
+algorithm cstdlib
+algorithm cstring
+algorithm initializer_list
+algorithm iosfwd
+algorithm iterator
+algorithm limits
+algorithm memory
+algorithm new
+algorithm stdexcept
+algorithm type_traits
+algorithm utility
+algorithm version
+any atomic
+any chrono
+any concepts
+any cstddef
+any cstdint
+any cstdlib
+any cstring
+any initializer_list
+any iosfwd
+any iterator
+any limits
+any memory
+any new
+any stdexcept
+any type_traits
+any typeinfo
+any variant
+any version
+array algorithm
+array compare
+array concepts
+array cstddef
+array cstdlib
+array initializer_list
+array iterator
+array limits
+array stdexcept
+array type_traits
+array utility
+array version
+atomic cmath
+atomic compare
+atomic cstddef
+atomic cstdint
+atomic cstring
+atomic ctime
+atomic iosfwd
+atomic limits
+atomic ratio
+atomic type_traits
+atomic version
+barrier atomic
+barrier concepts
+barrier cstddef
+barrier cstdint
+barrier cstring
+barrier ctime
+barrier iosfwd
+barrier iterator
+barrier limits
+barrier memory
+barrier new
+barrier ratio
+barrier stdexcept
+barrier type_traits
+barrier variant
+bit cstdint
+bit cstdlib
+bit iosfwd
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diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx11.csv b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx11.csv
new file mode 100644
index 0000000..2f9ef7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx11.csv
@@ -0,0 +1,962 @@
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diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx14.csv b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx14.csv
new file mode 100644
index 0000000..0d10e23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx14.csv
@@ -0,0 +1,971 @@
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diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx17.csv b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx17.csv
new file mode 100644
index 0000000..0d10e23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx17.csv
@@ -0,0 +1,971 @@
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diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx20.csv b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx20.csv
new file mode 100644
index 0000000..8f47b61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx20.csv
@@ -0,0 +1,978 @@
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+shared_mutex iosfwd
+shared_mutex limits
+shared_mutex ratio
+shared_mutex system_error
+shared_mutex type_traits
+shared_mutex version
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+source_location version
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+string_view iterator
+string_view limits
+string_view stdexcept
+string_view type_traits
+string_view version
+strstream istream
+strstream ostream
+strstream version
+system_error cerrno
+system_error compare
+system_error cstddef
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+system_error limits
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+system_error string
+system_error type_traits
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+thread limits
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+unordered_set type_traits
+unordered_set version
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+utility cstdlib
+utility initializer_list
+utility iosfwd
+utility limits
+utility type_traits
+utility version
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+valarray cmath
+valarray concepts
+valarray cstddef
+valarray cstdlib
+valarray cstring
+valarray functional
+valarray initializer_list
+valarray limits
+valarray new
+valarray stdexcept
+valarray type_traits
+valarray version
+variant compare
+variant cstddef
+variant cstdint
+variant cstring
+variant exception
+variant initializer_list
+variant limits
+variant new
+variant tuple
+variant type_traits
+variant typeinfo
+variant utility
+variant version
+vector algorithm
+vector atomic
+vector climits
+vector compare
+vector concepts
+vector cstddef
+vector cstdint
+vector cstdlib
+vector cstring
+vector initializer_list
+vector iosfwd
+vector limits
+vector new
+vector stdexcept
+vector tuple
+vector type_traits
+vector typeinfo
+vector utility
+vector version
diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx2b.csv b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx2b.csv
new file mode 100644
index 0000000..23cc6d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes/cxx2b.csv
@@ -0,0 +1,730 @@
+algorithm bit
+algorithm climits
+algorithm cstddef
+algorithm cstdint
+algorithm cstdlib
+algorithm cstring
+algorithm initializer_list
+algorithm iosfwd
+algorithm limits
+algorithm new
+algorithm type_traits
+algorithm version
+any cstddef
+any cstdint
+any cstdlib
+any cstring
+any initializer_list
+any limits
+any new
+any stdexcept
+any type_traits
+any typeinfo
+any version
+array compare
+array cstddef
+array cstdlib
+array initializer_list
+array limits
+array stdexcept
+array type_traits
+array version
+atomic cstddef
+atomic cstdint
+atomic cstring
+atomic ctime
+atomic iosfwd
+atomic limits
+atomic ratio
+atomic version
+barrier atomic
+barrier cstddef
+barrier cstdint
+barrier cstring
+barrier ctime
+barrier iosfwd
+barrier limits
+barrier new
+barrier ratio
+bit cstdint
+bit cstdlib
+bit limits
+bit version
+bitset climits
+bitset cstddef
+bitset cstdint
+bitset cstdlib
+bitset cstring
+bitset initializer_list
+bitset iosfwd
+bitset limits
+bitset new
+bitset stdexcept
+bitset string
+bitset type_traits
+bitset version
+ccomplex complex
+charconv cerrno
+charconv cmath
+charconv cstddef
+charconv cstdint
+charconv cstdlib
+charconv cstring
+charconv initializer_list
+charconv limits
+charconv type_traits
+chrono array
+chrono bit
+chrono charconv
+chrono cmath
+chrono compare
+chrono cstddef
+chrono cstdint
+chrono cstdlib
+chrono cstring
+chrono ctime
+chrono initializer_list
+chrono limits
+chrono locale
+chrono optional
+chrono ostream
+chrono ratio
+chrono sstream
+chrono stdexcept
+chrono string
+chrono string_view
+chrono tuple
+chrono type_traits
+chrono vector
+chrono version
+cinttypes cstdint
+cmath version
+codecvt cctype
+codecvt cstddef
+codecvt cstdint
+codecvt cstring
+codecvt mutex
+codecvt string
+codecvt version
+compare cmath
+compare cstddef
+compare cstdint
+compare limits
+compare version
+complex cmath
+complex iosfwd
+complex sstream
+complex stdexcept
+complex type_traits
+complex version
+concepts cstddef
+concepts version
+condition_variable atomic
+condition_variable cstddef
+condition_variable cstdint
+condition_variable cstdlib
+condition_variable cstring
+condition_variable initializer_list
+condition_variable iosfwd
+condition_variable limits
+condition_variable new
+condition_variable ratio
+condition_variable stdexcept
+condition_variable system_error
+condition_variable typeinfo
+condition_variable version
+coroutine compare
+coroutine cstddef
+coroutine cstdint
+coroutine cstring
+coroutine limits
+coroutine version
+cstddef version
+ctgmath ccomplex
+ctgmath cmath
+cwchar cwctype
+cwctype cctype
+deque compare
+deque cstddef
+deque cstdint
+deque cstdlib
+deque cstring
+deque initializer_list
+deque limits
+deque new
+deque stdexcept
+deque tuple
+deque type_traits
+deque version
+exception cstddef
+exception cstdlib
+exception version
+execution version
+expected cstddef
+expected cstdlib
+expected exception
+expected initializer_list
+expected new
+expected version
+experimental/algorithm algorithm
+experimental/algorithm cstddef
+experimental/algorithm type_traits
+experimental/coroutine cstddef
+experimental/coroutine cstdint
+experimental/coroutine cstring
+experimental/coroutine limits
+experimental/coroutine new
+experimental/coroutine type_traits
+experimental/deque deque
+experimental/deque experimental/memory_resource
+experimental/forward_list experimental/memory_resource
+experimental/forward_list forward_list
+experimental/functional array
+experimental/functional cstddef
+experimental/functional functional
+experimental/functional type_traits
+experimental/functional unordered_map
+experimental/functional vector
+experimental/iterator cstddef
+experimental/iterator iosfwd
+experimental/iterator iterator
+experimental/list experimental/memory_resource
+experimental/list list
+experimental/map experimental/memory_resource
+experimental/map map
+experimental/memory_resource cstddef
+experimental/memory_resource cstdlib
+experimental/memory_resource experimental/utility
+experimental/memory_resource limits
+experimental/memory_resource new
+experimental/memory_resource stdexcept
+experimental/memory_resource tuple
+experimental/memory_resource type_traits
+experimental/propagate_const cstddef
+experimental/propagate_const type_traits
+experimental/regex experimental/memory_resource
+experimental/regex experimental/string
+experimental/regex regex
+experimental/set experimental/memory_resource
+experimental/set set
+experimental/simd array
+experimental/simd cstddef
+experimental/simd tuple
+experimental/string experimental/memory_resource
+experimental/string string
+experimental/type_traits initializer_list
+experimental/type_traits type_traits
+experimental/unordered_map experimental/memory_resource
+experimental/unordered_map unordered_map
+experimental/unordered_set experimental/memory_resource
+experimental/unordered_set unordered_set
+experimental/utility utility
+experimental/vector experimental/memory_resource
+experimental/vector vector
+ext/hash_map algorithm
+ext/hash_map cmath
+ext/hash_map cstddef
+ext/hash_map cstdint
+ext/hash_map cstring
+ext/hash_map functional
+ext/hash_map initializer_list
+ext/hash_map limits
+ext/hash_map new
+ext/hash_map stdexcept
+ext/hash_map string
+ext/hash_map type_traits
+ext/hash_set algorithm
+ext/hash_set cmath
+ext/hash_set cstddef
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+ext/hash_set functional
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+ext/hash_set limits
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+ext/hash_set type_traits
+filesystem cerrno
+filesystem compare
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+filesystem cstdint
+filesystem cstdlib
+filesystem ctime
+filesystem iomanip
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+filesystem locale
+filesystem new
+filesystem ratio
+filesystem string
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+filesystem system_error
+filesystem type_traits
+filesystem version
+format array
+format bit
+format charconv
+format cstddef
+format cstdint
+format cstdlib
+format cstring
+format initializer_list
+format limits
+format locale
+format optional
+format queue
+format stack
+format stdexcept
+format string
+format string_view
+format tuple
+format type_traits
+format vector
+format version
+forward_list compare
+forward_list cstddef
+forward_list cstdint
+forward_list cstdlib
+forward_list cstring
+forward_list initializer_list
+forward_list limits
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+forward_list stdexcept
+forward_list tuple
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+forward_list version
+fstream cctype
+fstream cstddef
+fstream cstdint
+fstream cstdio
+fstream cstdlib
+fstream cstring
+fstream filesystem
+fstream initializer_list
+fstream istream
+fstream mutex
+fstream ostream
+fstream string
+fstream typeinfo
+fstream version
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+functional atomic
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+functional vector
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+future thread
+future version
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+iomanip istream
+iomanip version
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+ios cctype
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+ios cstdint
+ios cstring
+ios iosfwd
+ios mutex
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+ios system_error
+ios version
+iosfwd version
+iostream ios
+iostream istream
+iostream ostream
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+iostream version
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+istream iosfwd
+istream ostream
+istream version
+iterator compare
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+iterator cstdlib
+iterator initializer_list
+iterator iosfwd
+iterator limits
+iterator variant
+iterator version
+latch atomic
+latch limits
+latch version
+limits version
+list compare
+list cstddef
+list cstdint
+list cstdlib
+list cstring
+list initializer_list
+list limits
+list new
+list stdexcept
+list tuple
+list type_traits
+list version
+locale cctype
+locale cstddef
+locale cstdint
+locale cstdio
+locale cstdlib
+locale cstring
+locale ctime
+locale initializer_list
+locale ios
+locale iosfwd
+locale limits
+locale mutex
+locale new
+locale streambuf
+locale string
+locale version
+map compare
+map cstddef
+map cstdlib
+map initializer_list
+map limits
+map new
+map optional
+map stdexcept
+map tuple
+map type_traits
+map version
+memory atomic
+memory compare
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+memory_resource version
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+mutex cstdint
+mutex cstdlib
+mutex cstring
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+new cstdlib
+new exception
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+numeric limits
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+optional cstdint
+optional cstring
+optional initializer_list
+optional limits
+optional new
+optional stdexcept
+optional type_traits
+optional version
+ostream atomic
+ostream bitset
+ostream cstddef
+ostream cstdint
+ostream cstdlib
+ostream cstring
+ostream initializer_list
+ostream ios
+ostream iosfwd
+ostream limits
+ostream locale
+ostream new
+ostream stdexcept
+ostream streambuf
+ostream typeinfo
+ostream version
+queue compare
+queue cstddef
+queue cstdlib
+queue deque
+queue initializer_list
+queue limits
+queue type_traits
+queue vector
+queue version
+random bit
+random cmath
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+random cstdint
+random cstdlib
+random initializer_list
+random iosfwd
+random limits
+random numeric
+random string
+random type_traits
+random vector
+random version
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+ranges cstdlib
+ranges initializer_list
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+ranges iterator
+ranges limits
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+ranges type_traits
+ranges variant
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+ratio version
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+regex compare
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+regex cstdlib
+regex cstring
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+regex limits
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+regex vector
+regex version
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+semaphore ratio
+semaphore version
+set compare
+set cstddef
+set cstdlib
+set initializer_list
+set limits
+set new
+set optional
+set stdexcept
+set tuple
+set type_traits
+set version
+shared_mutex cstddef
+shared_mutex ctime
+shared_mutex iosfwd
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+shared_mutex system_error
+shared_mutex version
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+source_location version
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+string compare
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+string cstdint
+string cstdio
+string cstdlib
+string cstring
+string cwchar
+string initializer_list
+string iosfwd
+string limits
+string new
+string stdexcept
+string string_view
+string tuple
+string type_traits
+string version
+string_view compare
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+string_view cstdint
+string_view cstdio
+string_view cstdlib
+string_view cstring
+string_view cwchar
+string_view initializer_list
+string_view iosfwd
+string_view limits
+string_view stdexcept
+string_view type_traits
+string_view version
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+strstream ostream
+strstream version
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+system_error compare
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+system_error cstdint
+system_error cstring
+system_error limits
+system_error stdexcept
+system_error string
+system_error type_traits
+system_error version
+thread compare
+thread cstddef
+thread cstdint
+thread cstring
+thread ctime
+thread iosfwd
+thread limits
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+thread type_traits
+thread version
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+tuple version
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+type_traits version
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+typeindex version
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+typeinfo cstdint
+typeinfo cstdlib
+typeinfo exception
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+unordered_map compare
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+valarray cmath
+valarray cstddef
+valarray cstdlib
+valarray initializer_list
+valarray limits
+valarray new
+valarray stdexcept
+valarray type_traits
+valarray version
+variant compare
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+variant cstdint
+variant cstring
+variant exception
+variant initializer_list
+variant limits
+variant new
+variant tuple
+variant version
+vector climits
+vector compare
+vector cstddef
+vector cstdint
+vector cstdlib
+vector cstring
+vector initializer_list
+vector iosfwd
+vector limits
+vector new
+vector stdexcept
+vector tuple
+vector type_traits
+vector version
diff --git a/app/src/main/cpp/libcxx/test/libcxx/transitive_includes_to_csv.py b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes_to_csv.py
new file mode 100644
index 0000000..ad86ca7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/transitive_includes_to_csv.py
@@ -0,0 +1,168 @@
+#!/usr/bin/env python
+# ===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------===##
+
+from dataclasses import dataclass, field
+from typing import List  # Needed for python 3.8 compatibility.
+import argparse
+import pathlib
+import re
+import sys
+
+
+@dataclass
+class header:
+    name: str = None
+    level: int = -1
+
+
+def parse_line(line: str) -> header:
+    """
+    Parse an output line from --trace-include into a `header`.
+    """
+    match = re.match(r"(\.+) (.+)", line)
+    if not match:
+        sys.exit(f"Line {line} contains invalid data.")
+
+    # The number of periods in front of the header name is the nesting level of
+    # that header.
+    return header(match.group(2), len(match.group(1)))
+
+
+# On Windows, the path separators can either be forward slash or backslash.
+# If it is a backslash, Clang prints it escaped as two consecutive
+# backslashes, and they need to be escaped in the RE. (Use a raw string for
+# the pattern to avoid needing another level of escaping on the Python string
+# literal level.)
+LIBCXX_HEADER_REGEX = r".*c\+\+(?:/|\\\\)v[0-9]+(?:/|\\\\)(.+)"
+
+def is_libcxx_public_header(header : str) -> bool:
+    """
+    Returns whether a header is a C++ public header file.
+    """
+    # Only keep files in the c++/vN directory.
+    match = re.match(LIBCXX_HEADER_REGEX, header)
+    if not match:
+        return False
+
+    # Skip C compatibility headers.
+    if header.endswith(".h"):
+        return False
+
+    # Skip all other detail headers (headers starting with __ or in a subdirectory starting with __).
+    relative = match.group(1)
+    if relative.startswith("__") or re.search(r"(/|\\\\)__", relative):
+        return False
+
+    return True
+
+
+def is_libcxx_header(header : str) -> bool:
+    """
+    Returns whether a header is a libc++ header, excluding the C-compatibility headers.
+    """
+    # Only keep files in the c++/vN directory.
+    match = re.match(LIBCXX_HEADER_REGEX, header)
+    if not match:
+        return False
+
+    # Skip C compatibility headers (in particular, make sure not to skip libc++ detail headers).
+    relative = match.group(1)
+    if relative.endswith(".h") and not (relative.startswith("__") or re.search(r"(/|\\\\)__", relative)):
+        return False
+
+    return True
+
+
+def parse_file(file: pathlib.Path) -> List[str]:
+    """
+    Parse a file containing --trace-include output to generate a list of the top-level C++ includes
+    contained in it.
+
+    This effectively generates the dependency graph of C++ Standard Library headers of the header
+    whose --trace-include it is. In order to get the expected result of --trace-include, the
+    -fshow-skipped-includes flag also needs to be passed.
+    """
+    result = list()
+    with file.open(encoding="utf-8") as f:
+        for line in f.readlines():
+            header = parse_line(line)
+
+            # Skip non-libc++ headers
+            if not is_libcxx_header(header.name):
+                continue
+
+            # Include top-level headers in the output. There's usually exactly one,
+            # except if the compiler is passed a file with `-include`. Top-level
+            # headers are transparent, in the sense that we want to go look at
+            # transitive includes underneath.
+            if header.level == 1:
+                level = 999
+                result.append(header)
+                continue
+
+            # Skip libc++ headers included transitively.
+            if header.level > level:
+                continue
+
+            # Detail headers are transparent too: we attribute all includes of public libc++
+            # headers under a detail header to the last public libc++ header that included it.
+            if header.name.startswith("__") or re.search(r"(/|\\\\)__", header.name):
+                level = 999
+                continue
+
+            # Add the non-detail libc++ header to the list.
+            level = header.level
+            result.append(header)
+    return result
+
+
+def create_include_graph(path: pathlib.Path) -> List[str]:
+    result = list()
+    for file in sorted(path.glob("header.*")):
+        headers = parse_file(file)
+
+        # Get actual filenames relative to libc++'s installation directory instead of full paths
+        relative = lambda h: re.match(LIBCXX_HEADER_REGEX, h).group(1)
+
+        top_level = relative(next(h.name for h in headers if h.level == 1)) # There should be only one top-level header
+        includes = [relative(h.name) for h in headers if h.level != 1]
+
+        # Remove duplicates in all includes.
+        includes = list(set(includes))
+
+        if len(includes) != 0:
+            result.append([top_level] + includes)
+    return result
+
+
+def print_csv(graph: List[str]) -> None:
+    for includes in graph:
+        header = includes[0]
+        for include in sorted(includes[1:]):
+            if header == include:
+                sys.exit(f"Cycle detected: header {header} includes itself.")
+            print(f"{header} {include}")
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        description="""Produce a dependency graph of libc++ headers, in CSV format.
+Typically this script is executed by libcxx/test/libcxx/transitive_includes.sh.cpp""",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    parser.add_argument(
+        "input",
+        default=None,
+        metavar="DIR",
+        help="The directory containing the transitive includes of the headers.",
+    )
+    options = parser.parse_args()
+
+    root = pathlib.Path(options.input)
+    print_csv(create_include_graph(root))
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp
new file mode 100644
index 0000000..2972191
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/convert_to_integral.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// TODO: Make this test pass for all standards.
+// XFAIL: c++03
+
+// <type_traits>
+
+// __convert_to_integral(Tp)
+
+// Test that the __convert_to_integral functions properly converts Tp to the
+// correct type and value for integral, enum and user defined types.
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wprivate-header")
+#include <__utility/convert_to_integral.h>
+#include <limits>
+#include <type_traits>
+#include <cstdint>
+#include <cassert>
+
+#include "user_defined_integral.h"
+
+template <class T>
+struct EnumType
+{
+  enum type : T {E_zero, E_one};
+};
+
+
+template <class From, class To>
+void check_integral_types()
+{
+  typedef std::numeric_limits<From> Limits;
+  const From max = Limits::max();
+  const From min = Limits::min();
+  {
+  auto ret = std::__convert_to_integral((From)max);
+  assert(ret == max);
+  ret = std::__convert_to_integral((From)min);
+  assert(ret == min);
+  static_assert(std::is_same<decltype(ret), To>::value, "");
+  }
+  {
+  UserDefinedIntegral<From> f(max);
+  auto ret = std::__convert_to_integral(f);
+  assert(ret == max);
+  f.value = min;
+  ret = std::__convert_to_integral(f);
+  assert(ret == min);
+  static_assert(std::is_same<decltype(ret), To>::value, "");
+  }
+  {
+  typedef typename EnumType<From>::type Enum;
+  Enum e(static_cast<Enum>(max));
+  auto ret = std::__convert_to_integral(e);
+  assert(ret == max);
+  e = static_cast<Enum>(min);
+  ret = std::__convert_to_integral(min);
+  assert(ret == min);
+  static_assert(std::is_same<decltype(ret), To>::value, "");
+  }
+}
+
+
+template <class From, class To>
+void check_enum_types()
+{
+  auto ret = std::__convert_to_integral((From)1);
+  assert(ret == 1);
+  static_assert(std::is_same<decltype(ret), To>::value, "");
+}
+
+
+enum enum1 { zero = 0, one = 1 };
+enum enum2 : unsigned long {
+  value = std::numeric_limits<unsigned long>::max()
+};
+
+int main(int, char**)
+{
+  check_integral_types<bool, int>();
+  check_integral_types<char, int>();
+  check_integral_types<signed char, int>();
+  check_integral_types<unsigned char, int>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  check_integral_types<wchar_t, decltype(((wchar_t)1) + 1)>();
+#endif
+  check_integral_types<char16_t, int>();
+  // On some platforms, unsigned int and long are the same size.  These
+  // platforms have a choice of making uint32_t an int or a long.  However
+  // char32_t must promote to an unsigned int on these platforms [conv.prom].
+  // Use the following logic to make the test work on such platforms.
+  // (sizeof(uint32_t) == sizeof(unsigned int)) ? unsigned int : uint32_t;
+  typedef std::conditional<sizeof(uint32_t) == sizeof(unsigned int),
+                           unsigned int, uint32_t>::type char_integral;
+  check_integral_types<char32_t, char_integral>();
+  check_integral_types<short, int>();
+  check_integral_types<unsigned short, int>();
+  check_integral_types<int, int>();
+  check_integral_types<unsigned, unsigned>();
+  check_integral_types<long, long>();
+  check_integral_types<unsigned long, unsigned long>();
+  check_integral_types<long long, long long>();
+  check_integral_types<unsigned long long, unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+  check_integral_types<__int128_t, __int128_t>();
+  check_integral_types<__uint128_t, __uint128_t>();
+#endif
+    // TODO(ericwf): Not standard
+  typedef std::underlying_type<enum1>::type Enum1UT;
+  check_enum_types<enum1, decltype(((Enum1UT)1) + 1)>();
+  typedef std::underlying_type<enum2>::type Enum2UT;
+  check_enum_types<enum2, decltype(((Enum2UT)1) + 1)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_always_bitcastable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_always_bitcastable.compile.pass.cpp
new file mode 100644
index 0000000..4e78fa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_always_bitcastable.compile.pass.cpp
@@ -0,0 +1,219 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// <type_traits>
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+//
+// __is_always_bitcastable<_From, _To>
+
+#include "test_macros.h"
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wprivate-header")
+#include <__type_traits/is_always_bitcastable.h>
+
+#include <climits>
+#include <cstdint>
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#include <cwchar>
+#endif
+#include "type_algorithms.h"
+
+// To test pointers to functions.
+void Func1() {}
+using FuncPtr1 = decltype(&Func1);
+int Func2() { return 0; }
+using FuncPtr2 = decltype(&Func2);
+
+template <bool Expected, class T, class U>
+constexpr void check_one() {
+  static_assert(std::__is_always_bitcastable<T, U>::value == Expected);
+}
+
+template <bool Expected, class T, class U>
+constexpr void check_with_volatile() {
+  check_one<Expected, T, U>();
+  check_one<Expected, volatile T, U>();
+  check_one<Expected, T, volatile U>();
+  check_one<Expected, volatile T, volatile U>();
+}
+
+template <bool Expected, class T, class U>
+constexpr void check_with_cv() {
+  check_with_volatile<Expected, T, U>();
+  check_with_volatile<Expected, const T, U>();
+  check_with_volatile<Expected, T, const U>();
+  check_with_volatile<Expected, const T, const U>();
+}
+
+template <bool Expected, class Types1, class Types2 = Types1>
+constexpr void check() {
+  meta::for_each(Types1{}, []<class T>() {
+    meta::for_each(Types2{}, []<class U>() {
+      check_with_cv<Expected, T, U>();
+    });
+  });
+}
+
+template <bool Expected, class Types1, class Types2>
+constexpr void check_both_ways() {
+  check<Expected, Types1, Types2>();
+  check<Expected, Types2, Types1>();
+}
+
+constexpr void test() {
+  // Arithmetic types.
+  {
+    // Bit-castable arithmetic types.
+
+    // 8-bit types.
+    using integral_8 = meta::type_list<char8_t, int8_t, uint8_t>;
+    using chars = meta::type_list<char, unsigned char, signed char>;
+#if CHAR_BIT == 8
+    check<true, meta::concatenate_t<integral_8, chars>>();
+#else
+    check<true, integral_8>();
+    check<true, chars>();
+#endif
+
+    // 16-bit types.
+    using integral_16 = meta::type_list<char16_t, int16_t, uint16_t>;
+#if !defined(TEST_HAS_NO_WIDE_CHARACTERS) && __WCHAR_WIDTH__ == 16
+    check<true, meta::concatenate_t<integral_16, meta::type_list<wchar_t>>>();
+#else
+    check<true, integral_16>();
+#endif
+
+    // 32-bit types.
+    using integral_32 = meta::type_list<char32_t, int32_t, uint32_t>;
+#if !defined(TEST_HAS_NO_WIDE_CHARACTERS) && __WCHAR_WIDTH__ == 32
+    check<true, meta::concatenate_t<integral_32, meta::type_list<wchar_t>>>();
+#else
+    check<true, integral_32>();
+#endif
+
+    // 64-bit types.
+    using integral_64 = meta::type_list<int64_t, uint64_t>;
+    check<true, integral_64>();
+
+    // 128-bit types.
+#ifndef TEST_HAS_NO_INT128
+    check<true, meta::type_list<__int128_t, __uint128_t>>();
+#endif
+
+    // Bool.
+    check<true, meta::type_list<bool>, meta::concatenate_t<meta::type_list<bool>, integral_8>>();
+
+    // Non-bit-castable arithmetic types.
+
+    // Floating-point.
+    check_both_ways<false, meta::floating_point_types, meta::integral_types>();
+    check_both_ways<false, meta::type_list<float>, meta::type_list<double, long double>>();
+    check_both_ways<false, meta::type_list<double>, meta::type_list<float, long double>>();
+    check_both_ways<false, meta::type_list<long double>, meta::type_list<float, double>>();
+
+    // Different sizes.
+    check_both_ways<false, integral_8, meta::concatenate_t<integral_16, integral_32, integral_64>>();
+    check_both_ways<false, integral_16, meta::concatenate_t<integral_8, integral_32, integral_64>>();
+    check_both_ways<false, integral_32, meta::concatenate_t<integral_8, integral_16, integral_64>>();
+    check_both_ways<false, integral_64, meta::concatenate_t<integral_8, integral_16, integral_32>>();
+
+    // Different representations -- can convert from bool to other integral types, but not vice versa.
+    check<true, meta::type_list<bool>, integral_8>();
+    using larger_than_bool = meta::concatenate_t<
+      integral_16,
+      integral_32,
+      integral_64,
+      meta::floating_point_types>;
+    check<false, meta::type_list<bool>, larger_than_bool>();
+    check<false, meta::concatenate_t<integral_8, larger_than_bool>, meta::type_list<bool>>();
+
+    // Different representations -- floating point vs. integral.
+    check_both_ways<false, meta::floating_point_types, meta::integral_types>();
+  }
+
+  // Enumerations.
+  {
+    enum E1 { Value1 };
+    enum E2 { Value2 };
+    check<true, meta::type_list<E1>>();
+    check_both_ways<false, meta::type_list<E1>, meta::type_list<E2>>();
+
+    enum class ScopedE1 { Value1 };
+    enum class ScopedE2 { Value1 };
+    check<true, meta::type_list<ScopedE1>>();
+    check_both_ways<false, meta::type_list<ScopedE1>, meta::type_list<ScopedE2>>();
+  }
+
+  // Pointers.
+  {
+    check<true, meta::type_list<int*>>();
+    check_both_ways<false, meta::type_list<int*>, meta::type_list<const int*, long*, void*>>();
+
+    check<true, meta::type_list<FuncPtr1>>();
+    check_both_ways<false, meta::type_list<FuncPtr1>, meta::type_list<FuncPtr2>>();
+  }
+
+  // Pointers to members.
+  {
+    struct S {
+      int mem_obj1 = 0;
+      long mem_obj2 = 0;
+      void MemFunc1() {}
+      int MemFunc2() { return 0; }
+    };
+    using MemObjPtr1 = decltype(&S::mem_obj1);
+    using MemObjPtr2 = decltype(&S::mem_obj2);
+    using MemFuncPtr1 = decltype(&S::MemFunc1);
+    using MemFuncPtr2 = decltype(&S::MemFunc2);
+
+    check<true, meta::type_list<MemObjPtr1>>();
+    check<true, meta::type_list<MemFuncPtr1>>();
+    check_both_ways<false, meta::type_list<MemObjPtr1>, meta::type_list<MemObjPtr2>>();
+    check_both_ways<false, meta::type_list<MemFuncPtr1>, meta::type_list<MemFuncPtr2>>();
+  }
+
+  // Trivial classes.
+  {
+    struct S1 {};
+    check<true, meta::type_list<S1>>();
+
+    struct S2 {};
+    check_both_ways<false, meta::type_list<S1>, meta::type_list<S2>>();
+
+    // Having a `volatile` member doesn't prevent a class type from being considered trivially copyable. This is
+    // unfortunate behavior but it is consistent with the Standard.
+    struct VolatileMembersS {
+      volatile int x;
+    };
+    check<true, meta::type_list<VolatileMembersS>>();
+  }
+
+  // Trivial unions.
+  {
+    union U1 {};
+    check<true, meta::type_list<U1>>();
+
+    union U2 {};
+    check_both_ways<false, meta::type_list<U1>, meta::type_list<U2>>();
+
+    union VolatileMembersU {
+      volatile int x;
+    };
+    check<true, meta::type_list<VolatileMembersU>>();
+  }
+
+  // References are not objects, and thus are not bit-castable.
+  {
+    check_both_ways<false, meta::type_list<int&>, meta::type_list<int&>>();
+  }
+
+  // Arrays.
+  {
+    check<true, meta::type_list<int[8]>>();
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_callable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_callable.compile.pass.cpp
new file mode 100644
index 0000000..f7f76bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_callable.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <type_traits>
+
+struct Functor {
+  void operator()();
+};
+
+int func();
+
+struct NotFunctor {
+  bool compare();
+};
+
+struct ArgumentFunctor {
+  bool operator()(int, int);
+};
+
+static_assert(std::__is_callable<Functor>::value, "");
+static_assert(std::__is_callable<decltype(func)>::value, "");
+static_assert(!std::__is_callable<NotFunctor>::value, "");
+static_assert(!std::__is_callable<NotFunctor,
+                                  decltype(&NotFunctor::compare)>::value, "");
+static_assert(std::__is_callable<ArgumentFunctor, int, int>::value, "");
+static_assert(!std::__is_callable<ArgumentFunctor, int>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_constant_evaluated.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_constant_evaluated.pass.cpp
new file mode 100644
index 0000000..55398f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_constant_evaluated.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <type_traits>
+
+// __libcpp_is_constant_evaluated()
+
+// returns false when there's no constant evaluation support from the compiler.
+//  as well as when called not in a constexpr context
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main (int, char**) {
+    ASSERT_SAME_TYPE(decltype(std::__libcpp_is_constant_evaluated()), bool);
+    ASSERT_NOEXCEPT(std::__libcpp_is_constant_evaluated());
+
+#if !defined(_LIBCPP_CXX03_LANG)
+    static_assert(std::__libcpp_is_constant_evaluated(), "");
+#endif
+
+    bool p = std::__libcpp_is_constant_evaluated();
+    assert(!p);
+
+    return 0;
+    }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_implicitly_default_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_implicitly_default_constructible.pass.cpp
new file mode 100644
index 0000000..e1951cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_implicitly_default_constructible.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <type_traits>
+
+// __is_implicitly_default_constructible<Tp>
+
+#include <type_traits>
+
+
+struct ExplicitlyDefaultConstructible1 {
+    explicit ExplicitlyDefaultConstructible1() = default;
+};
+
+struct ExplicitlyDefaultConstructible2 {
+    explicit ExplicitlyDefaultConstructible2() { }
+};
+
+struct ImplicitlyDefaultConstructible1 {
+    ImplicitlyDefaultConstructible1() { }
+};
+
+struct ImplicitlyDefaultConstructible2 {
+    ImplicitlyDefaultConstructible2() = default;
+};
+
+struct NonDefaultConstructible1 {
+    NonDefaultConstructible1() = delete;
+};
+
+struct NonDefaultConstructible2 {
+    explicit NonDefaultConstructible2() = delete;
+};
+
+struct NonDefaultConstructible3 {
+    NonDefaultConstructible3(NonDefaultConstructible3&&) { }
+};
+
+struct ProtectedDefaultConstructible {
+protected:
+    ProtectedDefaultConstructible() = default;
+};
+
+struct PrivateDefaultConstructible {
+private:
+    PrivateDefaultConstructible() = default;
+};
+
+struct Base { };
+
+struct ProtectedDefaultConstructibleWithBase : Base {
+protected:
+    ProtectedDefaultConstructibleWithBase() = default;
+};
+
+struct PrivateDefaultConstructibleWithBase : Base {
+private:
+    PrivateDefaultConstructibleWithBase() = default;
+};
+
+static_assert(!std::__is_implicitly_default_constructible<ExplicitlyDefaultConstructible1>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<ExplicitlyDefaultConstructible2>::value, "");
+static_assert(std::__is_implicitly_default_constructible<ImplicitlyDefaultConstructible1>::value, "");
+static_assert(std::__is_implicitly_default_constructible<ImplicitlyDefaultConstructible2>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<NonDefaultConstructible1>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<NonDefaultConstructible2>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<NonDefaultConstructible3>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<ProtectedDefaultConstructible>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<PrivateDefaultConstructible>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<ProtectedDefaultConstructibleWithBase>::value, "");
+static_assert(!std::__is_implicitly_default_constructible<PrivateDefaultConstructibleWithBase>::value, "");
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_pointer.arc.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_pointer.arc.pass.mm
new file mode 100644
index 0000000..8651411
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_pointer.arc.pass.mm
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: has-fobjc-arc
+// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc
+
+// <type_traits>
+
+// std::is_pointer
+
+// Test that we correctly handle Objective-C++ ARC qualifiers on pointers.
+
+#include <type_traits>
+#include "test_macros.h"
+
+
+template <typename T>
+void assert_is_pointer() {
+    static_assert(std::is_pointer<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(std::is_pointer_v<T>, "");
+#endif
+}
+
+template <typename T>
+void test_is_pointer() {
+    assert_is_pointer<T>();
+
+    assert_is_pointer<T __weak>();
+    assert_is_pointer<T __strong>();
+    assert_is_pointer<T __autoreleasing>();
+    assert_is_pointer<T __unsafe_unretained>();
+
+    assert_is_pointer<T __weak const>();
+    assert_is_pointer<T __strong const>();
+    assert_is_pointer<T __autoreleasing const>();
+    assert_is_pointer<T __unsafe_unretained const>();
+
+    assert_is_pointer<T __weak volatile>();
+    assert_is_pointer<T __strong volatile>();
+    assert_is_pointer<T __autoreleasing volatile>();
+    assert_is_pointer<T __unsafe_unretained volatile>();
+
+    assert_is_pointer<T __weak const volatile>();
+    assert_is_pointer<T __strong const volatile>();
+    assert_is_pointer<T __autoreleasing const volatile>();
+    assert_is_pointer<T __unsafe_unretained const volatile>();
+}
+
+@class Foo;
+
+int main(int, char**) {
+    test_is_pointer<id>();
+    test_is_pointer<id const>();
+    test_is_pointer<id volatile>();
+    test_is_pointer<id const volatile>();
+
+    test_is_pointer<Foo*>();
+    test_is_pointer<Foo const*>();
+    test_is_pointer<Foo volatile*>();
+    test_is_pointer<Foo const volatile*>();
+
+    test_is_pointer<void*>();
+    test_is_pointer<void const*>();
+    test_is_pointer<void volatile*>();
+    test_is_pointer<void const volatile*>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_scalar.objc.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_scalar.objc.pass.mm
new file mode 100644
index 0000000..951a90d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_scalar.objc.pass.mm
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: has-fblocks
+// ADDITIONAL_COMPILE_FLAGS: -fblocks
+
+// <type_traits>
+
+// std::is_scalar
+
+// Make sure we report that blocks are scalar types.
+
+#include <type_traits>
+
+struct Foo { };
+template <int> struct Arg { };
+
+static_assert(std::is_scalar<void (^)(void)>::value, "");
+static_assert(std::is_scalar<void (^)()>::value, "");
+static_assert(std::is_scalar<void (^)(Arg<0>)>::value, "");
+static_assert(std::is_scalar<void (^)(Arg<0>, Arg<1>)>::value, "");
+static_assert(std::is_scalar<void (^)(Arg<0>, Arg<1>, Arg<2>)>::value, "");
+static_assert(std::is_scalar<Foo (^)(void)>::value, "");
+static_assert(std::is_scalar<Foo (^)()>::value, "");
+static_assert(std::is_scalar<Foo (^)(Arg<0>)>::value, "");
+static_assert(std::is_scalar<Foo (^)(Arg<0>, Arg<1>)>::value, "");
+static_assert(std::is_scalar<Foo (^)(Arg<0>, Arg<1>, Arg<2>)>::value, "");
+
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_specialization.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_specialization.compile.pass.cpp
new file mode 100644
index 0000000..134e5f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_specialization.compile.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class _Tp, template <class...> class _Template>
+// inline constexpr bool __is_specialization_v = true if and only if _Tp is a specialization of _Template
+//
+// Note instantiation for certain type combinations are ill-formed. These are
+// tested in is_specialization.verify.cpp.
+
+#include <type_traits>
+
+#include <array>
+#include <concepts>
+#include <string_view>
+#include <tuple>
+#include <utility>
+
+#include "test_macros.h"
+
+// Simple types
+static_assert(std::__is_specialization_v<std::pair<int, int>, std::pair>);
+static_assert(!std::__is_specialization_v<std::pair<int, int>, std::tuple>);
+static_assert(!std::__is_specialization_v<std::pair<int, int>, std::basic_string_view>);
+
+static_assert(std::__is_specialization_v<std::tuple<int>, std::tuple>);
+static_assert(std::__is_specialization_v<std::tuple<int, float>, std::tuple>);
+static_assert(std::__is_specialization_v<std::tuple<int, float, void*>, std::tuple>);
+
+static_assert(std::__is_specialization_v<std::string_view, std::basic_string_view>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::__is_specialization_v<std::wstring_view, std::basic_string_view>);
+#endif
+
+// Nested types
+static_assert(std::__is_specialization_v<std::pair<std::tuple<int>, int>, std::pair>);
+static_assert(!std::__is_specialization_v<std::pair<std::tuple<int>, int>, std::tuple>);
+
+// cvref _Tp is not a specialization.
+static_assert(!std::__is_specialization_v<const std::pair<int, int>, std::pair>);
+static_assert(!std::__is_specialization_v<volatile std::pair<int, int>, std::pair>);
+static_assert(!std::__is_specialization_v<const volatile std::pair<int, int>, std::pair>);
+
+static_assert(!std::__is_specialization_v<std::pair<int, int>&, std::pair>);
+static_assert(!std::__is_specialization_v<const std::pair<int, int>&, std::pair>);
+static_assert(!std::__is_specialization_v<volatile std::pair<int, int>&, std::pair>);
+static_assert(!std::__is_specialization_v<const volatile std::pair<int, int>&, std::pair>);
+
+static_assert(!std::__is_specialization_v<std::pair<int, int>&&, std::pair>);
+static_assert(!std::__is_specialization_v<const std::pair<int, int>&&, std::pair>);
+static_assert(!std::__is_specialization_v<volatile std::pair<int, int>&&, std::pair>);
+static_assert(!std::__is_specialization_v<const volatile std::pair<int, int>&&, std::pair>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_specialization.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_specialization.verify.cpp
new file mode 100644
index 0000000..0dbdbf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/is_specialization.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class _Tp, template <class...> class _Template>
+// inline constexpr bool __is_specialization_v = true if and only if _Tp is a specialization of _Template
+//
+// Tests the ill-formed instantiations.
+
+#include <type_traits>
+
+#include <array>
+#include <utility>
+
+// expected-error@+1 {{template template argument has different template parameters than its corresponding template template parameter}}
+static_assert(!std::__is_specialization_v<std::pair<int, size_t>, std::array>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/type_traits/lazy_metafunctions.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/type_traits/lazy_metafunctions.pass.cpp
new file mode 100644
index 0000000..51ff161
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/type_traits/lazy_metafunctions.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+
+// <type_traits>
+
+// __lazy_enable_if, __lazy_not, _And and _Or
+
+// Test the libc++ lazy meta-programming helpers in <type_traits>
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Type>
+struct Identity : Type {
+
+};
+
+typedef std::true_type TrueT;
+typedef std::false_type FalseT;
+
+typedef Identity<TrueT>  LazyTrueT;
+typedef Identity<FalseT> LazyFalseT;
+
+// A type that cannot be instantiated
+template <class T>
+struct CannotInst {
+    static_assert(std::is_same<T, T>::value == false, "");
+};
+
+
+template <int Value>
+struct NextInt {
+    typedef NextInt<Value + 1> type;
+    static const int value = Value;
+};
+
+template <int Value>
+const int NextInt<Value>::value;
+
+
+template <class Type>
+struct HasTypeImp {
+    template <class Up, class = typename Up::type>
+    static TrueT test(int);
+    template <class>
+    static FalseT test(...);
+
+    typedef decltype(test<Type>(0)) type;
+};
+
+// A metafunction that returns True if Type has a nested 'type' typedef
+// and false otherwise.
+template <class Type>
+struct HasType : HasTypeImp<Type>::type {};
+
+
+void LazyNotTest() {
+    {
+        typedef std::_Not<LazyTrueT> NotT;
+        static_assert(std::is_same<typename NotT::type, FalseT>::value, "");
+        static_assert(NotT::value == false, "");
+    }
+    {
+        typedef std::_Not<LazyFalseT> NotT;
+        static_assert(std::is_same<typename NotT::type, TrueT>::value, "");
+        static_assert(NotT::value == true, "");
+    }
+    {
+         // Check that CannotInst<int> is not instantiated.
+        typedef std::_Not<CannotInst<int> > NotT;
+
+        static_assert(std::is_same<NotT, NotT>::value, "");
+
+    }
+}
+
+void LazyAndTest() {
+    { // Test that it acts as the identity function for a single value
+        static_assert(std::_And<LazyFalseT>::value == false, "");
+        static_assert(std::_And<LazyTrueT>::value == true, "");
+    }
+    {
+        static_assert(std::_And<LazyTrueT, LazyTrueT>::value == true, "");
+        static_assert(std::_And<LazyTrueT, LazyFalseT>::value == false, "");
+        static_assert(std::_And<LazyFalseT, LazyTrueT>::value == false, "");
+        static_assert(std::_And<LazyFalseT, LazyFalseT>::value == false, "");
+    }
+    { // Test short circuiting - CannotInst<T> should never be instantiated.
+        static_assert(std::_And<LazyFalseT, CannotInst<int>>::value == false, "");
+        static_assert(std::_And<LazyTrueT, LazyFalseT, CannotInst<int>>::value == false, "");
+    }
+}
+
+
+void LazyOrTest() {
+    { // Test that it acts as the identity function for a single value
+        static_assert(std::_Or<LazyFalseT>::value == false, "");
+        static_assert(std::_Or<LazyTrueT>::value == true, "");
+    }
+    {
+        static_assert(std::_Or<LazyTrueT, LazyTrueT>::value == true, "");
+        static_assert(std::_Or<LazyTrueT, LazyFalseT>::value == true, "");
+        static_assert(std::_Or<LazyFalseT, LazyTrueT>::value == true, "");
+        static_assert(std::_Or<LazyFalseT, LazyFalseT>::value == false, "");
+    }
+    { // Test short circuiting - CannotInst<T> should never be instantiated.
+        static_assert(std::_Or<LazyTrueT, CannotInst<int>>::value == true, "");
+        static_assert(std::_Or<LazyFalseT, LazyTrueT, CannotInst<int>>::value == true, "");
+    }
+}
+
+
+int main(int, char**) {
+
+    LazyNotTest();
+    LazyAndTest();
+    LazyOrTest();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/any/allocator.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/allocator.pass.cpp
new file mode 100644
index 0000000..daaf74a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/allocator.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <any>
+
+// Check that we're consistently using std::allocator_traits to
+// allocate/deallocate/construct/destroy objects in std::any.
+// See https://llvm.org/PR45099 for details.
+
+#include <any>
+#include <cassert>
+#include <cstddef>
+#include <memory>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+
+// Make sure we don't fit in std::any's SBO
+struct Large { char big[sizeof(std::any) + 1]; };
+
+// Make sure we fit in std::any's SBO
+struct Small { };
+
+bool Large_was_allocated = false;
+bool Large_was_constructed = false;
+bool Large_was_destroyed = false;
+bool Large_was_deallocated = false;
+
+bool Small_was_constructed = false;
+bool Small_was_destroyed = false;
+
+namespace std {
+  template <>
+  struct allocator<Large> {
+    using value_type = Large;
+    using size_type = std::size_t;
+    using difference_type = std::ptrdiff_t;
+    using propagate_on_container_move_assignment = std::true_type;
+    using is_always_equal = std::true_type;
+
+    Large* allocate(std::size_t n) {
+      Large_was_allocated = true;
+      return static_cast<Large*>(::operator new(n * sizeof(Large)));
+    }
+
+    template <typename ...Args>
+    void construct(Large* p, Args&& ...args) {
+      new (p) Large(std::forward<Args>(args)...);
+      Large_was_constructed = true;
+    }
+
+    void destroy(Large* p) {
+      p->~Large();
+      Large_was_destroyed = true;
+    }
+
+    void deallocate(Large* p, std::size_t) {
+      Large_was_deallocated = true;
+      return ::operator delete(p);
+    }
+  };
+
+  template <>
+  struct allocator<Small> {
+    using value_type = Small;
+    using size_type = std::size_t;
+    using difference_type = std::ptrdiff_t;
+    using propagate_on_container_move_assignment = std::true_type;
+    using is_always_equal = std::true_type;
+
+    Small* allocate(std::size_t) { assert(false); return nullptr; }
+
+    template <typename ...Args>
+    void construct(Small* p, Args&& ...args) {
+      new (p) Small(std::forward<Args>(args)...);
+      Small_was_constructed = true;
+    }
+
+    void destroy(Small* p) {
+      p->~Small();
+      Small_was_destroyed = true;
+    }
+
+    void deallocate(Small*, std::size_t) { assert(false); }
+  };
+} // end namespace std
+
+
+int main(int, char**) {
+  // Test large types
+  {
+    {
+      std::any a = Large();
+      (void)a;
+
+      assert(Large_was_allocated);
+      assert(Large_was_constructed);
+    }
+
+    assert(Large_was_destroyed);
+    assert(Large_was_deallocated);
+  }
+
+  // Test small types
+  {
+    {
+      std::any a = Small();
+      (void)a;
+
+      assert(Small_was_constructed);
+    }
+
+    assert(Small_was_destroyed);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/any/size_and_alignment.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/size_and_alignment.pass.cpp
new file mode 100644
index 0000000..230ff8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/size_and_alignment.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <any>
+
+// Check that the size and alignment of any are what we expect.
+
+#include <any>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(sizeof(std::any) == sizeof(void*)*4, "");
+    static_assert(alignof(std::any) == alignof(void*), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/any/small_type.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/small_type.pass.cpp
new file mode 100644
index 0000000..65c7d34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/small_type.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <any>
+
+// Check that the size and alignment of any are what we expect.
+
+#include <any>
+#include "test_macros.h"
+#include "any_helpers.h"
+
+constexpr std::size_t BufferSize = (sizeof(void*) * 3);
+constexpr std::size_t BufferAlignment = alignof(void*);
+// Clang doesn't like "alignof(BufferAlignment * 2)" due to PR13986.
+// So we create "DoubleBufferAlignment" instead.
+constexpr std::size_t DoubleBufferAlignment = BufferAlignment * 2;
+
+class SmallThrowsDtor
+{
+public:
+    SmallThrowsDtor() {}
+    SmallThrowsDtor(SmallThrowsDtor const &) noexcept {}
+    SmallThrowsDtor(SmallThrowsDtor &&) noexcept {}
+    ~SmallThrowsDtor() noexcept(false) {}
+};
+
+
+struct alignas(1) MaxSizeType {
+    char buff[BufferSize];
+};
+
+struct alignas(BufferAlignment) MaxAlignType {
+};
+
+struct alignas(BufferAlignment) MaxSizeAndAlignType {
+    char buff[BufferSize];
+};
+
+
+struct alignas(1) OverSizeType {
+    char buff[BufferSize + 1];
+};
+
+struct alignas(DoubleBufferAlignment) OverAlignedType {
+};
+
+struct alignas(DoubleBufferAlignment) OverSizeAndAlignedType {
+    char buff[BufferSize + 1];
+};
+
+int main(int, char**)
+{
+    using std::__any_imp::_IsSmallObject;
+    static_assert(_IsSmallObject<small>::value, "");
+    static_assert(_IsSmallObject<void*>::value, "");
+    static_assert(!_IsSmallObject<SmallThrowsDtor>::value, "");
+    static_assert(!_IsSmallObject<large>::value, "");
+    {
+        // Check a type that meets the size requirement *exactly* and has
+        // a lesser alignment requirement is considered small.
+        typedef MaxSizeType T;
+        static_assert(sizeof(T) == BufferSize, "");
+        static_assert(alignof(T) < BufferAlignment,   "");
+        static_assert(_IsSmallObject<T>::value, "");
+    }
+    {
+        // Check a type that meets the alignment requirement *exactly* and has
+        // a lesser size is considered small.
+        typedef MaxAlignType T;
+        static_assert(sizeof(T) < BufferSize, "");
+        static_assert(alignof(T) == BufferAlignment,   "");
+        static_assert(_IsSmallObject<T>::value, "");
+    }
+    {
+        // Check a type that meets the size and alignment requirements *exactly*
+        // is considered small.
+        typedef MaxSizeAndAlignType T;
+        static_assert(sizeof(T) == BufferSize, "");
+        static_assert(alignof(T) == BufferAlignment,   "");
+        static_assert(_IsSmallObject<T>::value, "");
+    }
+    {
+        // Check a type that meets the alignment requirements but is over-sized
+        // is not considered small.
+        typedef OverSizeType T;
+        static_assert(sizeof(T) > BufferSize, "");
+        static_assert(alignof(T) < BufferAlignment, "");
+        static_assert(!_IsSmallObject<T>::value, "");
+    }
+    {
+        // Check a type that meets the size requirements but is over-aligned
+        // is not considered small.
+        typedef OverAlignedType T;
+        static_assert(sizeof(T) < BufferSize, "");
+        static_assert(alignof(T) > BufferAlignment, "");
+        static_assert(!_IsSmallObject<T>::value, "");
+    }
+    {
+        // Check a type that exceeds both the size an alignment requirements
+        // is not considered small.
+        typedef OverSizeAndAlignedType T;
+        static_assert(sizeof(T) > BufferSize, "");
+        static_assert(alignof(T) > BufferAlignment, "");
+        static_assert(!_IsSmallObject<T>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/any/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/version.pass.cpp
new file mode 100644
index 0000000..6c5c43e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/any/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <any>
+
+#include <any>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/assert.exception_guard.no_exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/assert.exception_guard.no_exceptions.pass.cpp
new file mode 100644
index 0000000..5c9cc38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/assert.exception_guard.no_exceptions.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -fno-exceptions -D_LIBCPP_ENABLE_ASSERTIONS
+
+// ADDITIONAL_COMPILE_FLAGS: -Wno-private-header
+
+#include <__utility/exception_guard.h>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  TEST_LIBCPP_ASSERT_FAILURE(
+      std::__make_exception_guard([] {}), "__exception_guard not completed with exceptions disabled");
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/exception_guard.no_exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/exception_guard.no_exceptions.pass.cpp
new file mode 100644
index 0000000..0b6233e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/exception_guard.no_exceptions.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// ADDITIONAL_COMPILE_FLAGS: -fno-exceptions -D_LIBCPP_ENABLE_ASSERTIONS
+
+#include <utility>
+
+int main(int, char**) {
+  auto guard = std::__make_exception_guard([] {});
+  auto guard2 = std::move(guard);
+  guard2.__complete();
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/exception_guard.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/exception_guard.pass.cpp
new file mode 100644
index 0000000..71e60fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/exception_guard.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// UNSUPPORTED: no-exceptions
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    // Make sure the transaction is rolled back if it is not marked as complete when
+    // it goes out of scope.
+    {
+        bool rolled_back = false;
+        {
+            auto rollback = [&] { rolled_back = true; };
+            std::__exception_guard<decltype(rollback)> g(rollback);
+        }
+        assert(rolled_back);
+    }
+
+    // Make sure the transaction is not rolled back if it is marked as complete when
+    // it goes out of scope.
+    {
+        bool rolled_back = false;
+        {
+            auto rollback = [&] { rolled_back = true; };
+            std::__exception_guard<decltype(rollback)> g(rollback);
+            g.__complete();
+        }
+        assert(!rolled_back);
+    }
+
+    // Make sure that we will perform the right number of rollbacks when a transaction has
+    // been moved around
+    {
+        // When we don't complete it (exactly 1 rollback should happen)
+        {
+            int rollbacks = 0;
+            {
+                auto rollback = [&] { ++rollbacks; };
+                std::__exception_guard<decltype(rollback)> g(rollback);
+                auto other = std::move(g);
+            }
+            assert(rollbacks == 1);
+        }
+
+        // When we do complete it (no rollbacks should happen)
+        {
+            int rollbacks = 0;
+            {
+                auto rollback = [&] { ++rollbacks; };
+                std::__exception_guard<decltype(rollback)> g(rollback);
+                auto other = std::move(g);
+                other.__complete();
+            }
+            assert(rollbacks == 0);
+        }
+    }
+
+    // Basic properties of the type
+    {
+        struct Rollback { void operator()() const { } };
+        using Transaction = std::__exception_guard<Rollback>;
+
+        static_assert(!std::is_default_constructible<Transaction>::value, "");
+
+        static_assert(!std::is_copy_constructible<Transaction>::value, "");
+        static_assert( std::is_move_constructible<Transaction>::value, "");
+
+        static_assert(!std::is_copy_assignable<Transaction>::value, "");
+        static_assert(!std::is_move_assignable<Transaction>::value, "");
+
+        // Check noexcept-ness of a few operations
+        {
+            struct ThrowOnMove {
+                ThrowOnMove(ThrowOnMove&&) noexcept(false) { }
+                void operator()() const { }
+            };
+            using ThrowOnMoveTransaction = std::__exception_guard<ThrowOnMove>;
+
+            ASSERT_NOEXCEPT(std::declval<Transaction>().__complete());
+            static_assert( std::is_nothrow_move_constructible<Transaction>::value, "");
+            static_assert(!std::is_nothrow_move_constructible<ThrowOnMoveTransaction>::value, "");
+        }
+    }
+
+    return true;
+}
+
+void test_exceptions() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    // Make sure the rollback is performed when an exception is thrown during the
+    // lifetime of the transaction.
+    {
+        bool rolled_back = false;
+        auto rollback = [&] { rolled_back = true; };
+        try {
+            std::__exception_guard<decltype(rollback)> g(rollback);
+            throw 0;
+        } catch (...) { }
+        assert(rolled_back);
+    }
+
+    // Make sure we don't roll back if an exception is thrown but the transaction
+    // has been marked as complete when that happens.
+    {
+        bool rolled_back = false;
+        auto rollback = [&] { rolled_back = true; };
+        try {
+            std::__exception_guard<decltype(rollback)> g(rollback);
+            g.__complete();
+            throw 0;
+        } catch (...) { }
+        assert(!rolled_back);
+    }
+
+    // Make sure __exception_guard does not rollback if the transaction is marked as
+    // completed within a destructor.
+    {
+        struct S {
+            explicit S(bool& x) : x_(x) { }
+
+            ~S() {
+                auto rollback = [this]{ x_ = true; };
+                std::__exception_guard<decltype(rollback)> g(rollback);
+                g.__complete();
+            }
+
+            bool& x_;
+        };
+
+        bool rolled_back = false;
+        try {
+            S s(rolled_back);
+            throw 0;
+        } catch (...) {
+            assert(!rolled_back);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+    test();
+    test_exceptions();
+#if TEST_STD_VER > 17
+    static_assert(test(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.arrow.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.arrow.pass.cpp
new file mode 100644
index 0000000..82fb35a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.arrow.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// constexpr const T* operator->() const noexcept;
+// constexpr T* operator->() noexcept;
+//
+// Preconditions: has_value() is true.
+
+#include <expected>
+#include <utility>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::expected<int, int> e{std::unexpect, 5};
+  TEST_LIBCPP_ASSERT_FAILURE(e.operator->(), "expected::operator-> requires the expected to contain a value");
+  TEST_LIBCPP_ASSERT_FAILURE(std::as_const(e).operator->(), "expected::operator-> requires the expected to contain a value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.deref.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.deref.pass.cpp
new file mode 100644
index 0000000..d1ab321
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.deref.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// constexpr const T& operator*() const & noexcept;
+// constexpr T& operator*() & noexcept;
+// constexpr T&& operator*() && noexcept;
+// constexpr const T&& operator*() const && noexcept;
+//
+// Preconditions: has_value() is true.
+
+#include <expected>
+#include <utility>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::expected<int, int> e{std::unexpect, 5};
+  TEST_LIBCPP_ASSERT_FAILURE(*e, "expected::operator* requires the expected to contain a value");
+  TEST_LIBCPP_ASSERT_FAILURE(*std::as_const(e), "expected::operator* requires the expected to contain a value");
+  TEST_LIBCPP_ASSERT_FAILURE(*std::move(e), "expected::operator* requires the expected to contain a value");
+  TEST_LIBCPP_ASSERT_FAILURE(*std::move(std::as_const(e)), "expected::operator* requires the expected to contain a value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.error.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.error.pass.cpp
new file mode 100644
index 0000000..814b47d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/assert.error.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// constexpr const E& error() const & noexcept;
+// constexpr E& error() & noexcept;
+// constexpr E&& error() && noexcept;
+// constexpr const E&& error() const && noexcept;
+//
+// Preconditions: has_value() is false.
+
+#include <expected>
+#include <utility>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::expected<int, int> e{std::in_place, 5};
+  TEST_LIBCPP_ASSERT_FAILURE(e.error(), "expected::error requires the expected to contain an error");
+  TEST_LIBCPP_ASSERT_FAILURE(std::as_const(e).error(), "expected::error requires the expected to contain an error");
+  TEST_LIBCPP_ASSERT_FAILURE(std::move(e).error(), "expected::error requires the expected to contain an error");
+  TEST_LIBCPP_ASSERT_FAILURE(std::move(std::as_const(e)).error(), "expected::error requires the expected to contain an error");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..3fd047d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/no_unique_address.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// test [[no_unique_address]] is applied to the union
+
+#include <expected>
+
+struct Empty {};
+
+static_assert(sizeof(std::expected<Empty, Empty>) == sizeof(bool));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/noexcept.extension.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/noexcept.extension.compile.pass.cpp
new file mode 100644
index 0000000..643bf4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/noexcept.extension.compile.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// test libc++ noexcept extensions on operations of std::expected<T, E>
+
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../types.h"
+
+// expected();
+static_assert(std::is_nothrow_default_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_nothrow_default_constructible_v<std::expected<DefaultMayThrow, int>>);
+
+// expected(const expected&)
+static_assert(std::is_nothrow_copy_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_nothrow_copy_constructible_v<std::expected<CopyMayThrow, int>>);
+static_assert(!std::is_nothrow_copy_constructible_v<std::expected<int, CopyMayThrow>>);
+
+// expected(const expected<OtherT, OtherE>&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<long, long>,
+              const std::expected<int, int>&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<ConvertFromCopyIntMayThrow, long>,
+              const std::expected<int, int>&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<long, ConvertFromCopyIntMayThrow>,
+              const std::expected<int, int>&>);
+static_assert(!std::is_nothrow_constructible_v<                                      //
+              std::expected<ConvertFromCopyIntMayThrow, ConvertFromCopyIntMayThrow>, //
+              const std::expected<int, int>&>);
+
+// expected(expected<OtherT, OtherE>&&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<long, long>,
+              std::expected<int, int>&&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<ConvertFromMoveIntMayThrow, long>,
+              std::expected<int, int>&&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<long, ConvertFromMoveIntMayThrow>,
+              std::expected<int, int>&&>);
+static_assert(!std::is_nothrow_constructible_v<                                      //
+              std::expected<ConvertFromMoveIntMayThrow, ConvertFromMoveIntMayThrow>, //
+              std::expected<int, int>&&>);
+
+// expected(U&&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<int, int>,
+              const int&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<ConvertFromCopyIntMayThrow, int>,
+              const int&>);
+
+// expected(const unexpected<OtherE>&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<int, long>,
+              const std::unexpected<int>&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<int, ConvertFromCopyIntMayThrow>,
+              const std::unexpected<int>&>);
+
+// expected(unexpected<OtherE>&&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<int, long>,
+              std::unexpected<int>&&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<int, ConvertFromMoveIntMayThrow>,
+              std::unexpected<int>&&>);
+
+// expected(in_place_t, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<int, int>,
+              std::in_place_t,
+              const int&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<ConvertFromCopyIntMayThrow, int>,
+              std::in_place_t,
+              const int&>);
+
+// expected(in_place_t, initializer_list<U>, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<ConvertFromInitializerListNoexcept, int>,
+              std::in_place_t,
+              std::initializer_list<int>>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<ConvertFromInitializerListMayThrow, int>,
+              std::in_place_t,
+              std::initializer_list<int>>);
+
+// expected(unexpect_t, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<int, int>,
+              std::unexpect_t,
+              const int&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<int, ConvertFromCopyIntMayThrow>,
+              std::unexpect_t,
+              const int&>);
+
+// expected(unexpect_t, initializer_list<U>, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<int, ConvertFromInitializerListNoexcept>,
+              std::unexpect_t,
+              std::initializer_list<int>>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<int, ConvertFromInitializerListMayThrow>,
+              std::unexpect_t,
+              std::initializer_list<int>>);
+
+// expected& operator=(const expected&)
+static_assert(std::is_nothrow_copy_assignable_v<std::expected<int, int>>);
+static_assert(!std::is_nothrow_copy_assignable_v<std::expected<CopyConstructMayThrow, int>>);
+static_assert(!std::is_nothrow_copy_assignable_v<std::expected<CopyAssignMayThrow, int>>);
+static_assert(!std::is_nothrow_copy_assignable_v<std::expected<int, CopyConstructMayThrow>>);
+static_assert(!std::is_nothrow_copy_assignable_v<std::expected<int, CopyAssignMayThrow>>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/value_or.mandates.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/value_or.mandates.verify.cpp
new file mode 100644
index 0000000..11d52ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.expected/value_or.mandates.verify.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error
+
+// Test the mandates
+// template<class U> constexpr T value_or(U&& v) const &;
+// Mandates: is_copy_constructible_v<T> is true and is_convertible_v<U, T> is true.
+
+// template<class U> constexpr T value_or(U&& v) &&;
+// Mandates: is_move_constructible_v<T> is true and is_convertible_v<U, T> is true.
+
+#include <expected>
+#include <utility>
+
+struct NonCopyable {
+  NonCopyable(int) {}
+  NonCopyable(const NonCopyable&) = delete;
+};
+
+struct NonMovable {
+  NonMovable(int) {}
+  NonMovable(NonMovable&&) = delete;
+};
+
+struct NotConvertibleFromInt {};
+
+void test() {
+  // const & overload
+  // !is_copy_constructible_v<T>,
+  {
+    const std::expected<NonCopyable, int> f1{5};
+    f1.value_or(5); // expected-note{{in instantiation of function template specialization 'std::expected<NonCopyable, int>::value_or<int>' requested here}}
+    // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}value_type has to be copy constructible}}
+  }
+
+  // const & overload
+  // !is_convertible_v<U, T>
+  {
+    const std::expected<NotConvertibleFromInt, int> f1{std::in_place};
+    f1.value_or(5); // expected-note{{in instantiation of function template specialization 'std::expected<NotConvertibleFromInt, int>::value_or<int>' requested here}}
+    //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}argument has to be convertible to value_type}}
+  }
+
+  // && overload
+  // !is_move_constructible_v<T>,
+  {
+    std::expected<NonMovable, int> f1{5};
+    std::move(f1).value_or(5); // expected-note{{in instantiation of function template specialization 'std::expected<NonMovable, int>::value_or<int>' requested here}}
+    //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}value_type has to be move constructible}}
+  }
+
+  // && overload
+  // !is_convertible_v<U, T>
+  {
+    std::expected<NotConvertibleFromInt, int> f1{std::in_place};
+    std::move(f1).value_or(5); // expected-note{{in instantiation of function template specialization 'std::expected<NotConvertibleFromInt, int>::value_or<int>' requested here}}
+    //expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}argument has to be convertible to value_type}}
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/class.mandates.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/class.mandates.verify.cpp
new file mode 100644
index 0000000..6544672
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/class.mandates.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// A program that instantiates the definition of unexpected for a non-object type, an array type, a specialization of unexpected, or a cv-qualified type is ill-formed.
+
+#include <expected>
+
+
+
+template class std::unexpected<int[2]>; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}[expected.un.general]}}
+
+template class std::unexpected<const int>; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}[expected.un.general]}}
+
+template class std::unexpected<int&>; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}[expected.un.general]}}
+
+template class std::unexpected<std::unexpected<int>>; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}[expected.un.general]}}
+
+template class std::unexpected<volatile int>; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}[expected.un.general]}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/noexcept.extension.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/noexcept.extension.compile.pass.cpp
new file mode 100644
index 0000000..867b90e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/noexcept.extension.compile.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// test libc++ noexcept extensions on operations of std::unexpected<E>
+
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../types.h"
+
+// unexpected(Error&&);
+static_assert(std::is_nothrow_constructible_v< //
+              std::unexpected<int>,
+              const int&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::unexpected<ConvertFromCopyIntMayThrow>,
+              const int&>);
+
+
+// unexpected(in_place_t, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::unexpected<int>,
+              std::in_place_t,
+              const int&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::unexpected<ConvertFromCopyIntMayThrow>,
+              std::in_place_t,
+              const int&>);
+
+// unexpected(in_place_t, initializer_list<U>, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::unexpected<ConvertFromInitializerListNoexcept>,
+              std::in_place_t,
+              std::initializer_list<int>>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::unexpected<ConvertFromInitializerListMayThrow>,
+              std::in_place_t,
+              std::initializer_list<int>>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/swap.mandates.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/swap.mandates.verify.cpp
new file mode 100644
index 0000000..2ac0644
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.unexpected/swap.mandates.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error
+
+// Test the mandates
+// constexpr void swap(unexpected& other) noexcept(is_nothrow_swappable_v<E>);
+// Mandates: is_swappable_v<E> is true.
+
+#include <expected>
+
+struct Foo {};
+
+void swap(Foo&, Foo&) = delete;
+
+void test() {
+  std::unexpected<Foo> f1{Foo{}};
+  f1.swap(f1); // expected-note{{in instantiation of member function 'std::unexpected<Foo>::swap' requested here}}
+  // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed {{.*}}unexpected::swap requires is_swappable_v<E> to be true}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/assert.deref.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/assert.deref.pass.cpp
new file mode 100644
index 0000000..d75f15d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/assert.deref.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// constexpr void operator*() const noexcept;
+//
+// Preconditions: has_value() is true.
+
+#include <expected>
+#include <utility>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::expected<void, int> e{std::unexpect, 5};
+  TEST_LIBCPP_ASSERT_FAILURE(*e, "expected::operator* requires the expected to contain a value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/assert.error.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/assert.error.pass.cpp
new file mode 100644
index 0000000..1e20cc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/assert.error.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// constexpr const E& error() const & noexcept;
+// constexpr E& error() & noexcept;
+// constexpr E&& error() && noexcept;
+// constexpr const E&& error() const && noexcept;
+//
+// Preconditions: has_value() is false.
+
+#include <expected>
+#include <utility>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::expected<void, int> e{std::in_place};
+  TEST_LIBCPP_ASSERT_FAILURE(e.error(), "expected::error requires the expected to contain an error");
+  TEST_LIBCPP_ASSERT_FAILURE(std::as_const(e).error(), "expected::error requires the expected to contain an error");
+  TEST_LIBCPP_ASSERT_FAILURE(std::move(e).error(), "expected::error requires the expected to contain an error");
+  TEST_LIBCPP_ASSERT_FAILURE(std::move(std::as_const(e)).error(), "expected::error requires the expected to contain an error");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..1ad2aa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/no_unique_address.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// test [[no_unique_address]] is applied to the union
+
+#include <expected>
+
+struct Empty {};
+
+static_assert(sizeof(std::expected<void, Empty>) == sizeof(bool));
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/noexcept.extension.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/noexcept.extension.compile.pass.cpp
new file mode 100644
index 0000000..3ecbc0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/expected.void/noexcept.extension.compile.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// test libc++ noexcept extensions on operations of std::expected<void, E>
+
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../types.h"
+
+// expected(const expected&)
+static_assert(std::is_nothrow_copy_constructible_v<std::expected<void, int>>);
+static_assert(!std::is_nothrow_copy_constructible_v<std::expected<void, CopyMayThrow>>);
+
+
+// expected(const expected<OtherT, OtherE>&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<void, long>,
+              const std::expected<void, int>&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromCopyIntMayThrow>,
+              const std::expected<void, int>&>);
+
+
+// expected(expected<OtherT, OtherE>&&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<void, long>,
+              std::expected<void, int>&&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromMoveIntMayThrow>,
+              std::expected<void, int>&&>);
+
+// expected(const unexpected<OtherE>&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<void, long>,
+              const std::unexpected<int>&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromCopyIntMayThrow>,
+              const std::unexpected<int>&>);
+
+// expected(unexpected<OtherE>&&)
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<void, long>,
+              std::unexpected<int>&&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromMoveIntMayThrow>,
+              std::unexpected<int>&&>);
+
+
+// expected(unexpect_t, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<void, int>,
+              std::unexpect_t,
+              const int&>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromCopyIntMayThrow>,
+              std::unexpect_t,
+              const int&>);
+
+// expected(unexpect_t, initializer_list<U>, _Args&&...);
+static_assert(std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromInitializerListNoexcept>,
+              std::unexpect_t,
+              std::initializer_list<int>>);
+static_assert(!std::is_nothrow_constructible_v< //
+              std::expected<void, ConvertFromInitializerListMayThrow>,
+              std::unexpect_t,
+              std::initializer_list<int>>);
+
+// expected& operator=(const expected&)
+static_assert(std::is_nothrow_copy_assignable_v<std::expected<void, int>>);
+static_assert(!std::is_nothrow_copy_assignable_v<std::expected<void, CopyConstructMayThrow>>);
+static_assert(!std::is_nothrow_copy_assignable_v<std::expected<void, CopyAssignMayThrow>>);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/types.h b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/types.h
new file mode 100644
index 0000000..52b4e6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/types.h
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_LIBCXX_UTILITIES_EXPECTED_TYPES_H
+#define TEST_LIBCXX_UTILITIES_EXPECTED_TYPES_H
+
+#include <initializer_list>
+
+struct DefaultMayThrow {
+  DefaultMayThrow();
+};
+
+struct CopyMayThrow {
+  CopyMayThrow(const CopyMayThrow&);
+};
+
+struct ConvertFromCopyIntMayThrow {
+  ConvertFromCopyIntMayThrow(const int&);
+  ConvertFromCopyIntMayThrow(int&&) noexcept;
+};
+
+struct ConvertFromMoveIntMayThrow {
+  ConvertFromMoveIntMayThrow(const int&) noexcept;
+  ConvertFromMoveIntMayThrow(int&&);
+};
+
+struct ConvertFromInitializerListNoexcept {
+  ConvertFromInitializerListNoexcept(std::initializer_list<int>) noexcept;
+};
+
+struct ConvertFromInitializerListMayThrow {
+  ConvertFromInitializerListMayThrow(std::initializer_list<int>);
+};
+
+struct CopyConstructMayThrow {
+  CopyConstructMayThrow(const CopyConstructMayThrow&);
+  CopyConstructMayThrow& operator=(CopyConstructMayThrow const&) noexcept;
+};
+
+struct CopyAssignMayThrow {
+  CopyAssignMayThrow(const CopyAssignMayThrow&) noexcept;
+  CopyAssignMayThrow& operator=(CopyAssignMayThrow const&);
+};
+
+
+#endif // TEST_LIBCXX_UTILITIES_EXPECTED_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/version.pass.cpp
new file mode 100644
index 0000000..d9d45fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/expected/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <expected>
+
+#include <expected>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/enable_insertable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/enable_insertable.compile.pass.cpp
new file mode 100644
index 0000000..6256403
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/enable_insertable.compile.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+#include <format>
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <queue>
+#include <set>
+#include <span>
+#include <stack>
+#include <string>
+#include <string_view>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct no_value_type {
+  using iterator = CharT*;
+  iterator end();
+  void insert(iterator, CharT*, CharT*);
+};
+
+template <class CharT>
+struct no_end {
+  using value_type = CharT;
+  using iterator = CharT*;
+  void insert(iterator, CharT*, CharT*);
+};
+
+template <class CharT>
+struct no_insert {
+  using value_type = CharT;
+  using iterator = CharT*;
+  iterator end();
+};
+
+template <class CharT>
+struct no_specialization {
+  using value_type = CharT;
+  using iterator = CharT*;
+  iterator end();
+  void insert(iterator, CharT*, CharT*);
+};
+
+template <class CharT>
+struct valid {
+  using value_type = CharT;
+  using iterator = CharT*;
+  iterator end();
+  void insert(iterator, CharT*, CharT*);
+};
+
+namespace std::__format {
+template <>
+inline constexpr bool __enable_insertable<no_value_type<char>> = true;
+template <>
+inline constexpr bool __enable_insertable<no_end<char>> = true;
+template <>
+inline constexpr bool __enable_insertable<no_insert<char>> = true;
+template <>
+inline constexpr bool __enable_insertable<valid<char>> = true;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <>
+inline constexpr bool __enable_insertable<no_value_type<wchar_t>> = true;
+template <>
+inline constexpr bool __enable_insertable<no_end<wchar_t>> = true;
+template <>
+inline constexpr bool __enable_insertable<no_insert<wchar_t>> = true;
+template <>
+inline constexpr bool __enable_insertable<valid<wchar_t>> = true;
+#endif
+} // namespace std::__format
+
+static_assert(!std::__format::__insertable<no_value_type<char>>);
+static_assert(!std::__format::__insertable<no_end<char>>);
+static_assert(!std::__format::__insertable<no_insert<char>>);
+static_assert(!std::__format::__insertable<no_specialization<char>>);
+static_assert(std::__format::__insertable<valid<char>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::__format::__insertable<no_value_type<wchar_t>>);
+static_assert(!std::__format::__insertable<no_end<wchar_t>>);
+static_assert(!std::__format::__insertable<no_insert<wchar_t>>);
+static_assert(!std::__format::__insertable<no_specialization<wchar_t>>);
+static_assert(std::__format::__insertable<valid<wchar_t>>);
+#endif
+
+namespace std::__format {
+template <>
+inline constexpr bool __enable_insertable<valid<signed char>> = true;
+template <>
+inline constexpr bool __enable_insertable<valid<unsigned char>> = true;
+} // namespace std::__format
+
+static_assert(!std::__format::__insertable<valid<signed char>>);
+static_assert(!std::__format::__insertable<valid<unsigned char>>);
+
+static_assert(std::__format::__insertable<std::string>);
+static_assert(!std::__format::__insertable<std::string_view>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::__format::__insertable<std::wstring>);
+static_assert(!std::__format::__insertable<std::wstring_view>);
+#endif
+
+static_assert(!std::__format::__insertable<std::array<char, 1>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::__format::__insertable<std::array<wchar_t, 1>>);
+#endif
+
+static_assert(std::__format::__insertable<std::vector<char>>);
+static_assert(std::__format::__insertable<std::deque<char>>);
+static_assert(!std::__format::__insertable<std::forward_list<char>>);
+static_assert(std::__format::__insertable<std::list<char>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::__format::__insertable<std::vector<wchar_t>>);
+static_assert(std::__format::__insertable<std::deque<wchar_t>>);
+static_assert(!std::__format::__insertable<std::forward_list<wchar_t>>);
+static_assert(std::__format::__insertable<std::list<wchar_t>>);
+#endif
+
+static_assert(!std::__format::__insertable<std::set<char>>);
+static_assert(!std::__format::__insertable<std::map<char, char>>);
+static_assert(!std::__format::__insertable<std::multiset<char>>);
+static_assert(!std::__format::__insertable<std::multimap<char, char>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::__format::__insertable<std::set<wchar_t>>);
+static_assert(!std::__format::__insertable<std::map<wchar_t, wchar_t>>);
+static_assert(!std::__format::__insertable<std::multiset<wchar_t>>);
+static_assert(!std::__format::__insertable<std::multimap<wchar_t, wchar_t>>);
+#endif
+
+static_assert(!std::__format::__insertable<std::stack<char>>);
+static_assert(!std::__format::__insertable<std::queue<char>>);
+static_assert(!std::__format::__insertable<std::priority_queue<char>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::__format::__insertable<std::stack<wchar_t>>);
+static_assert(!std::__format::__insertable<std::queue<wchar_t>>);
+static_assert(!std::__format::__insertable<std::priority_queue<wchar_t>>);
+#endif
+
+static_assert(!std::__format::__insertable<std::span<char>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::__format::__insertable<std::span<wchar_t>>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.arguments/format.arg/arg_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.arguments/format.arg/arg_t.compile.pass.cpp
new file mode 100644
index 0000000..7f21f13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.arguments/format.arg/arg_t.compile.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// namespace __format { enum class __arg_t : uint8_t{...}; }
+
+#include <format>
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_same_v<std::underlying_type_t<std::__format::__arg_t>, uint8_t>);
+
+static_assert(uint8_t(std::__format::__arg_t::__none) == 0);
+static_assert(uint8_t(std::__format::__arg_t::__boolean) == 1);
+static_assert(uint8_t(std::__format::__arg_t::__char_type) == 2);
+static_assert(uint8_t(std::__format::__arg_t::__int) == 3);
+static_assert(uint8_t(std::__format::__arg_t::__long_long) == 4);
+static_assert(uint8_t(std::__format::__arg_t::__i128) == 5);
+static_assert(uint8_t(std::__format::__arg_t::__unsigned) == 6);
+static_assert(uint8_t(std::__format::__arg_t::__unsigned_long_long) == 7);
+static_assert(uint8_t(std::__format::__arg_t::__u128) == 8);
+static_assert(uint8_t(std::__format::__arg_t::__float) == 9);
+static_assert(uint8_t(std::__format::__arg_t::__double) == 10);
+static_assert(uint8_t(std::__format::__arg_t::__long_double) == 11);
+static_assert(uint8_t(std::__format::__arg_t::__const_char_type_ptr) == 12);
+static_assert(uint8_t(std::__format::__arg_t::__string_view) == 13);
+static_assert(uint8_t(std::__format::__arg_t::__ptr) == 14);
+static_assert(uint8_t(std::__format::__arg_t::__handle) == 15);
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.formatter/format.context/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.formatter/format.context/types.compile.pass.cpp
new file mode 100644
index 0000000..159ad5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.formatter/format.context/types.compile.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// Class typedefs:
+// template<class Out, class charT>
+// class basic_format_context {
+// public:
+//   using iterator = Out
+//   using char_type = charT;
+//   template<class T> using formatter_type = formatter<T, charT>;
+// }
+//
+// Namespace std typedefs:
+// using format_context = basic_format_context<unspecified, char>;
+// using wformat_context = basic_format_context<unspecified, wchar_t>;
+
+#include <format>
+#include <string_view>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class OutIt, class CharT>
+constexpr void test() {
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<OutIt, CharT>::iterator,
+                     OutIt>);
+  static_assert(
+      std::is_same_v<
+          typename std::basic_format_context<OutIt, CharT>::char_type, CharT>);
+  static_assert(std::is_same_v<typename std::basic_format_context<
+                                   OutIt, CharT>::template formatter_type<bool>,
+                               std::formatter<bool, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<CharT>,
+                     std::formatter<CharT, CharT>>);
+  static_assert(std::is_same_v<typename std::basic_format_context<
+                                   OutIt, CharT>::template formatter_type<int>,
+                               std::formatter<int, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<unsigned>,
+                     std::formatter<unsigned, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<long long>,
+                     std::formatter<long long, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<OutIt, CharT>::
+                         template formatter_type<unsigned long long>,
+                     std::formatter<unsigned long long, CharT>>);
+#ifndef TEST_HAS_NO_INT128
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<__int128_t>,
+                     std::formatter<__int128_t, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<__uint128_t>,
+                     std::formatter<__uint128_t, CharT>>);
+#endif
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<float>,
+                     std::formatter<float, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<double>,
+                     std::formatter<double, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<long double>,
+                     std::formatter<long double, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<const CharT*>,
+                     std::formatter<const CharT*, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<OutIt, CharT>::
+                         template formatter_type<std::basic_string_view<CharT>>,
+                     std::formatter<std::basic_string_view<CharT>, CharT>>);
+  static_assert(
+      std::is_same_v<typename std::basic_format_context<
+                         OutIt, CharT>::template formatter_type<const void*>,
+                     std::formatter<const void*, CharT>>);
+}
+
+constexpr void test() {
+  test<std::back_insert_iterator<std::__format::__output_buffer<char>>, char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<std::back_insert_iterator<std::__format::__output_buffer<wchar_t>>,
+       wchar_t>();
+#endif
+}
+
+template <class, class>
+constexpr bool is_basic_format_context_specialization = false;
+template <class It, class CharT>
+constexpr bool is_basic_format_context_specialization<std::basic_format_context<It, CharT>, CharT> = true;
+
+static_assert(is_basic_format_context_specialization<std::format_context, char>);
+static_assert(
+    std::is_same_v<
+        std::format_context,
+        std::basic_format_context<
+            std::back_insert_iterator<std::__format::__output_buffer<char>>,
+            char>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(is_basic_format_context_specialization<std::wformat_context, wchar_t>);
+LIBCPP_STATIC_ASSERT(
+    std::is_same_v<
+        std::wformat_context,
+        std::basic_format_context<
+            std::back_insert_iterator< std::__format::__output_buffer<wchar_t>>,
+            wchar_t>>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/concepts_precision.h b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/concepts_precision.h
new file mode 100644
index 0000000..86c9f06
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/concepts_precision.h
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_CONCEPTS_PRECISION_H
+#define LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_CONCEPTS_PRECISION_H
+
+template <class T>
+concept has_precision = requires(T parser) {
+  parser.__precision;
+};
+
+template <class T>
+concept has_precision_as_arg = requires(T parser) {
+  parser.__precision_as_arg;
+};
+
+#endif // LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_CONCEPTS_PRECISION_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.h b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.h
new file mode 100644
index 0000000..f281222
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.h
@@ -0,0 +1,1909 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// WARNING, this entire header is generated by
+// utiles/generate_extended_grapheme_cluster_test.py
+// DO NOT MODIFY!
+
+// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
+//
+// See Terms of Use <https://www.unicode.org/copyright.html>
+// for definitions of Unicode Inc.'s Data Files and Software.
+//
+// NOTICE TO USER: Carefully read the following legal agreement.
+// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
+// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
+// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+// TERMS AND CONDITIONS OF THIS AGREEMENT.
+// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
+// THE DATA FILES OR SOFTWARE.
+//
+// COPYRIGHT AND PERMISSION NOTICE
+//
+// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved.
+// Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of the Unicode data files and any associated documentation
+// (the "Data Files") or Unicode software and any associated documentation
+// (the "Software") to deal in the Data Files or Software
+// without restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, and/or sell copies of
+// the Data Files or Software, and to permit persons to whom the Data Files
+// or Software are furnished to do so, provided that either
+// (a) this copyright and permission notice appear with all copies
+// of the Data Files or Software, or
+// (b) this copyright and permission notice appear in associated
+// Documentation.
+//
+// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
+// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
+// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
+// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THE DATA FILES OR SOFTWARE.
+//
+// Except as contained in this notice, the name of a copyright holder
+// shall not be used in advertising or otherwise to promote the sale,
+// use or other dealings in these Data Files or Software without prior
+// written authorization of the copyright holder.
+
+#ifndef LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_EXTENDED_GRAPHEME_CLUSTER_H
+#define LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_EXTENDED_GRAPHEME_CLUSTER_H
+
+#include <array>
+#include <string_view>
+#include <vector>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct data {
+  /// The input to parse.
+  std::basic_string_view<CharT> input;
+
+  /// The first code point all extended grapheme clusters in the input.
+  std::vector<char32_t> code_points;
+
+  /// The offset of the last code units of the extended grapheme clusters in the input.
+  ///
+  /// The vector has the same number of entries as \ref code_points.
+  std::vector<size_t> breaks;
+};
+
+/// The data for UTF-8.
+std::array<data<char>, 602> data_utf8 = {{
+     {"\U00000020\U00000020", {32, 32}, {1, 2}},
+     {"\U00000020\U00000308\U00000020", {32, 32}, {3, 4}},
+     {"\U00000020\U0000000d", {32, 13}, {1, 2}},
+     {"\U00000020\U00000308\U0000000d", {32, 13}, {3, 4}},
+     {"\U00000020\U0000000a", {32, 10}, {1, 2}},
+     {"\U00000020\U00000308\U0000000a", {32, 10}, {3, 4}},
+     {"\U00000020\U00000001", {32, 1}, {1, 2}},
+     {"\U00000020\U00000308\U00000001", {32, 1}, {3, 4}},
+     {"\U00000020\U0000034f", {32}, {3}},
+     {"\U00000020\U00000308\U0000034f", {32}, {5}},
+     {"\U00000020\U0001f1e6", {32, 127462}, {1, 5}},
+     {"\U00000020\U00000308\U0001f1e6", {32, 127462}, {3, 7}},
+     {"\U00000020\U00000600", {32, 1536}, {1, 3}},
+     {"\U00000020\U00000308\U00000600", {32, 1536}, {3, 5}},
+     {"\U00000020\U00000903", {32}, {4}},
+     {"\U00000020\U00000308\U00000903", {32}, {6}},
+     {"\U00000020\U00001100", {32, 4352}, {1, 4}},
+     {"\U00000020\U00000308\U00001100", {32, 4352}, {3, 6}},
+     {"\U00000020\U00001160", {32, 4448}, {1, 4}},
+     {"\U00000020\U00000308\U00001160", {32, 4448}, {3, 6}},
+     {"\U00000020\U000011a8", {32, 4520}, {1, 4}},
+     {"\U00000020\U00000308\U000011a8", {32, 4520}, {3, 6}},
+     {"\U00000020\U0000ac00", {32, 44032}, {1, 4}},
+     {"\U00000020\U00000308\U0000ac00", {32, 44032}, {3, 6}},
+     {"\U00000020\U0000ac01", {32, 44033}, {1, 4}},
+     {"\U00000020\U00000308\U0000ac01", {32, 44033}, {3, 6}},
+     {"\U00000020\U0000231a", {32, 8986}, {1, 4}},
+     {"\U00000020\U00000308\U0000231a", {32, 8986}, {3, 6}},
+     {"\U00000020\U00000300", {32}, {3}},
+     {"\U00000020\U00000308\U00000300", {32}, {5}},
+     {"\U00000020\U0000200d", {32}, {4}},
+     {"\U00000020\U00000308\U0000200d", {32}, {6}},
+     {"\U00000020\U00000378", {32, 888}, {1, 3}},
+     {"\U00000020\U00000308\U00000378", {32, 888}, {3, 5}},
+     {"\U0000000d\U00000020", {13, 32}, {1, 2}},
+     {"\U0000000d\U00000308\U00000020", {13, 776, 32}, {1, 3, 4}},
+     {"\U0000000d\U0000000d", {13, 13}, {1, 2}},
+     {"\U0000000d\U00000308\U0000000d", {13, 776, 13}, {1, 3, 4}},
+     {"\U0000000d\U0000000a", {13}, {2}},
+     {"\U0000000d\U00000308\U0000000a", {13, 776, 10}, {1, 3, 4}},
+     {"\U0000000d\U00000001", {13, 1}, {1, 2}},
+     {"\U0000000d\U00000308\U00000001", {13, 776, 1}, {1, 3, 4}},
+     {"\U0000000d\U0000034f", {13, 847}, {1, 3}},
+     {"\U0000000d\U00000308\U0000034f", {13, 776}, {1, 5}},
+     {"\U0000000d\U0001f1e6", {13, 127462}, {1, 5}},
+     {"\U0000000d\U00000308\U0001f1e6", {13, 776, 127462}, {1, 3, 7}},
+     {"\U0000000d\U00000600", {13, 1536}, {1, 3}},
+     {"\U0000000d\U00000308\U00000600", {13, 776, 1536}, {1, 3, 5}},
+     {"\U0000000d\U00000903", {13, 2307}, {1, 4}},
+     {"\U0000000d\U00000308\U00000903", {13, 776}, {1, 6}},
+     {"\U0000000d\U00001100", {13, 4352}, {1, 4}},
+     {"\U0000000d\U00000308\U00001100", {13, 776, 4352}, {1, 3, 6}},
+     {"\U0000000d\U00001160", {13, 4448}, {1, 4}},
+     {"\U0000000d\U00000308\U00001160", {13, 776, 4448}, {1, 3, 6}},
+     {"\U0000000d\U000011a8", {13, 4520}, {1, 4}},
+     {"\U0000000d\U00000308\U000011a8", {13, 776, 4520}, {1, 3, 6}},
+     {"\U0000000d\U0000ac00", {13, 44032}, {1, 4}},
+     {"\U0000000d\U00000308\U0000ac00", {13, 776, 44032}, {1, 3, 6}},
+     {"\U0000000d\U0000ac01", {13, 44033}, {1, 4}},
+     {"\U0000000d\U00000308\U0000ac01", {13, 776, 44033}, {1, 3, 6}},
+     {"\U0000000d\U0000231a", {13, 8986}, {1, 4}},
+     {"\U0000000d\U00000308\U0000231a", {13, 776, 8986}, {1, 3, 6}},
+     {"\U0000000d\U00000300", {13, 768}, {1, 3}},
+     {"\U0000000d\U00000308\U00000300", {13, 776}, {1, 5}},
+     {"\U0000000d\U0000200d", {13, 8205}, {1, 4}},
+     {"\U0000000d\U00000308\U0000200d", {13, 776}, {1, 6}},
+     {"\U0000000d\U00000378", {13, 888}, {1, 3}},
+     {"\U0000000d\U00000308\U00000378", {13, 776, 888}, {1, 3, 5}},
+     {"\U0000000a\U00000020", {10, 32}, {1, 2}},
+     {"\U0000000a\U00000308\U00000020", {10, 776, 32}, {1, 3, 4}},
+     {"\U0000000a\U0000000d", {10, 13}, {1, 2}},
+     {"\U0000000a\U00000308\U0000000d", {10, 776, 13}, {1, 3, 4}},
+     {"\U0000000a\U0000000a", {10, 10}, {1, 2}},
+     {"\U0000000a\U00000308\U0000000a", {10, 776, 10}, {1, 3, 4}},
+     {"\U0000000a\U00000001", {10, 1}, {1, 2}},
+     {"\U0000000a\U00000308\U00000001", {10, 776, 1}, {1, 3, 4}},
+     {"\U0000000a\U0000034f", {10, 847}, {1, 3}},
+     {"\U0000000a\U00000308\U0000034f", {10, 776}, {1, 5}},
+     {"\U0000000a\U0001f1e6", {10, 127462}, {1, 5}},
+     {"\U0000000a\U00000308\U0001f1e6", {10, 776, 127462}, {1, 3, 7}},
+     {"\U0000000a\U00000600", {10, 1536}, {1, 3}},
+     {"\U0000000a\U00000308\U00000600", {10, 776, 1536}, {1, 3, 5}},
+     {"\U0000000a\U00000903", {10, 2307}, {1, 4}},
+     {"\U0000000a\U00000308\U00000903", {10, 776}, {1, 6}},
+     {"\U0000000a\U00001100", {10, 4352}, {1, 4}},
+     {"\U0000000a\U00000308\U00001100", {10, 776, 4352}, {1, 3, 6}},
+     {"\U0000000a\U00001160", {10, 4448}, {1, 4}},
+     {"\U0000000a\U00000308\U00001160", {10, 776, 4448}, {1, 3, 6}},
+     {"\U0000000a\U000011a8", {10, 4520}, {1, 4}},
+     {"\U0000000a\U00000308\U000011a8", {10, 776, 4520}, {1, 3, 6}},
+     {"\U0000000a\U0000ac00", {10, 44032}, {1, 4}},
+     {"\U0000000a\U00000308\U0000ac00", {10, 776, 44032}, {1, 3, 6}},
+     {"\U0000000a\U0000ac01", {10, 44033}, {1, 4}},
+     {"\U0000000a\U00000308\U0000ac01", {10, 776, 44033}, {1, 3, 6}},
+     {"\U0000000a\U0000231a", {10, 8986}, {1, 4}},
+     {"\U0000000a\U00000308\U0000231a", {10, 776, 8986}, {1, 3, 6}},
+     {"\U0000000a\U00000300", {10, 768}, {1, 3}},
+     {"\U0000000a\U00000308\U00000300", {10, 776}, {1, 5}},
+     {"\U0000000a\U0000200d", {10, 8205}, {1, 4}},
+     {"\U0000000a\U00000308\U0000200d", {10, 776}, {1, 6}},
+     {"\U0000000a\U00000378", {10, 888}, {1, 3}},
+     {"\U0000000a\U00000308\U00000378", {10, 776, 888}, {1, 3, 5}},
+     {"\U00000001\U00000020", {1, 32}, {1, 2}},
+     {"\U00000001\U00000308\U00000020", {1, 776, 32}, {1, 3, 4}},
+     {"\U00000001\U0000000d", {1, 13}, {1, 2}},
+     {"\U00000001\U00000308\U0000000d", {1, 776, 13}, {1, 3, 4}},
+     {"\U00000001\U0000000a", {1, 10}, {1, 2}},
+     {"\U00000001\U00000308\U0000000a", {1, 776, 10}, {1, 3, 4}},
+     {"\U00000001\U00000001", {1, 1}, {1, 2}},
+     {"\U00000001\U00000308\U00000001", {1, 776, 1}, {1, 3, 4}},
+     {"\U00000001\U0000034f", {1, 847}, {1, 3}},
+     {"\U00000001\U00000308\U0000034f", {1, 776}, {1, 5}},
+     {"\U00000001\U0001f1e6", {1, 127462}, {1, 5}},
+     {"\U00000001\U00000308\U0001f1e6", {1, 776, 127462}, {1, 3, 7}},
+     {"\U00000001\U00000600", {1, 1536}, {1, 3}},
+     {"\U00000001\U00000308\U00000600", {1, 776, 1536}, {1, 3, 5}},
+     {"\U00000001\U00000903", {1, 2307}, {1, 4}},
+     {"\U00000001\U00000308\U00000903", {1, 776}, {1, 6}},
+     {"\U00000001\U00001100", {1, 4352}, {1, 4}},
+     {"\U00000001\U00000308\U00001100", {1, 776, 4352}, {1, 3, 6}},
+     {"\U00000001\U00001160", {1, 4448}, {1, 4}},
+     {"\U00000001\U00000308\U00001160", {1, 776, 4448}, {1, 3, 6}},
+     {"\U00000001\U000011a8", {1, 4520}, {1, 4}},
+     {"\U00000001\U00000308\U000011a8", {1, 776, 4520}, {1, 3, 6}},
+     {"\U00000001\U0000ac00", {1, 44032}, {1, 4}},
+     {"\U00000001\U00000308\U0000ac00", {1, 776, 44032}, {1, 3, 6}},
+     {"\U00000001\U0000ac01", {1, 44033}, {1, 4}},
+     {"\U00000001\U00000308\U0000ac01", {1, 776, 44033}, {1, 3, 6}},
+     {"\U00000001\U0000231a", {1, 8986}, {1, 4}},
+     {"\U00000001\U00000308\U0000231a", {1, 776, 8986}, {1, 3, 6}},
+     {"\U00000001\U00000300", {1, 768}, {1, 3}},
+     {"\U00000001\U00000308\U00000300", {1, 776}, {1, 5}},
+     {"\U00000001\U0000200d", {1, 8205}, {1, 4}},
+     {"\U00000001\U00000308\U0000200d", {1, 776}, {1, 6}},
+     {"\U00000001\U00000378", {1, 888}, {1, 3}},
+     {"\U00000001\U00000308\U00000378", {1, 776, 888}, {1, 3, 5}},
+     {"\U0000034f\U00000020", {847, 32}, {2, 3}},
+     {"\U0000034f\U00000308\U00000020", {847, 32}, {4, 5}},
+     {"\U0000034f\U0000000d", {847, 13}, {2, 3}},
+     {"\U0000034f\U00000308\U0000000d", {847, 13}, {4, 5}},
+     {"\U0000034f\U0000000a", {847, 10}, {2, 3}},
+     {"\U0000034f\U00000308\U0000000a", {847, 10}, {4, 5}},
+     {"\U0000034f\U00000001", {847, 1}, {2, 3}},
+     {"\U0000034f\U00000308\U00000001", {847, 1}, {4, 5}},
+     {"\U0000034f\U0000034f", {847}, {4}},
+     {"\U0000034f\U00000308\U0000034f", {847}, {6}},
+     {"\U0000034f\U0001f1e6", {847, 127462}, {2, 6}},
+     {"\U0000034f\U00000308\U0001f1e6", {847, 127462}, {4, 8}},
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+     {"\U0000ac01\U00000308\U0000200d", {44033}, {8}},
+     {"\U0000ac01\U00000378", {44033, 888}, {3, 5}},
+     {"\U0000ac01\U00000308\U00000378", {44033, 888}, {5, 7}},
+     {"\U0000231a\U00000020", {8986, 32}, {3, 4}},
+     {"\U0000231a\U00000308\U00000020", {8986, 32}, {5, 6}},
+     {"\U0000231a\U0000000d", {8986, 13}, {3, 4}},
+     {"\U0000231a\U00000308\U0000000d", {8986, 13}, {5, 6}},
+     {"\U0000231a\U0000000a", {8986, 10}, {3, 4}},
+     {"\U0000231a\U00000308\U0000000a", {8986, 10}, {5, 6}},
+     {"\U0000231a\U00000001", {8986, 1}, {3, 4}},
+     {"\U0000231a\U00000308\U00000001", {8986, 1}, {5, 6}},
+     {"\U0000231a\U0000034f", {8986}, {5}},
+     {"\U0000231a\U00000308\U0000034f", {8986}, {7}},
+     {"\U0000231a\U0001f1e6", {8986, 127462}, {3, 7}},
+     {"\U0000231a\U00000308\U0001f1e6", {8986, 127462}, {5, 9}},
+     {"\U0000231a\U00000600", {8986, 1536}, {3, 5}},
+     {"\U0000231a\U00000308\U00000600", {8986, 1536}, {5, 7}},
+     {"\U0000231a\U00000903", {8986}, {6}},
+     {"\U0000231a\U00000308\U00000903", {8986}, {8}},
+     {"\U0000231a\U00001100", {8986, 4352}, {3, 6}},
+     {"\U0000231a\U00000308\U00001100", {8986, 4352}, {5, 8}},
+     {"\U0000231a\U00001160", {8986, 4448}, {3, 6}},
+     {"\U0000231a\U00000308\U00001160", {8986, 4448}, {5, 8}},
+     {"\U0000231a\U000011a8", {8986, 4520}, {3, 6}},
+     {"\U0000231a\U00000308\U000011a8", {8986, 4520}, {5, 8}},
+     {"\U0000231a\U0000ac00", {8986, 44032}, {3, 6}},
+     {"\U0000231a\U00000308\U0000ac00", {8986, 44032}, {5, 8}},
+     {"\U0000231a\U0000ac01", {8986, 44033}, {3, 6}},
+     {"\U0000231a\U00000308\U0000ac01", {8986, 44033}, {5, 8}},
+     {"\U0000231a\U0000231a", {8986, 8986}, {3, 6}},
+     {"\U0000231a\U00000308\U0000231a", {8986, 8986}, {5, 8}},
+     {"\U0000231a\U00000300", {8986}, {5}},
+     {"\U0000231a\U00000308\U00000300", {8986}, {7}},
+     {"\U0000231a\U0000200d", {8986}, {6}},
+     {"\U0000231a\U00000308\U0000200d", {8986}, {8}},
+     {"\U0000231a\U00000378", {8986, 888}, {3, 5}},
+     {"\U0000231a\U00000308\U00000378", {8986, 888}, {5, 7}},
+     {"\U00000300\U00000020", {768, 32}, {2, 3}},
+     {"\U00000300\U00000308\U00000020", {768, 32}, {4, 5}},
+     {"\U00000300\U0000000d", {768, 13}, {2, 3}},
+     {"\U00000300\U00000308\U0000000d", {768, 13}, {4, 5}},
+     {"\U00000300\U0000000a", {768, 10}, {2, 3}},
+     {"\U00000300\U00000308\U0000000a", {768, 10}, {4, 5}},
+     {"\U00000300\U00000001", {768, 1}, {2, 3}},
+     {"\U00000300\U00000308\U00000001", {768, 1}, {4, 5}},
+     {"\U00000300\U0000034f", {768}, {4}},
+     {"\U00000300\U00000308\U0000034f", {768}, {6}},
+     {"\U00000300\U0001f1e6", {768, 127462}, {2, 6}},
+     {"\U00000300\U00000308\U0001f1e6", {768, 127462}, {4, 8}},
+     {"\U00000300\U00000600", {768, 1536}, {2, 4}},
+     {"\U00000300\U00000308\U00000600", {768, 1536}, {4, 6}},
+     {"\U00000300\U00000903", {768}, {5}},
+     {"\U00000300\U00000308\U00000903", {768}, {7}},
+     {"\U00000300\U00001100", {768, 4352}, {2, 5}},
+     {"\U00000300\U00000308\U00001100", {768, 4352}, {4, 7}},
+     {"\U00000300\U00001160", {768, 4448}, {2, 5}},
+     {"\U00000300\U00000308\U00001160", {768, 4448}, {4, 7}},
+     {"\U00000300\U000011a8", {768, 4520}, {2, 5}},
+     {"\U00000300\U00000308\U000011a8", {768, 4520}, {4, 7}},
+     {"\U00000300\U0000ac00", {768, 44032}, {2, 5}},
+     {"\U00000300\U00000308\U0000ac00", {768, 44032}, {4, 7}},
+     {"\U00000300\U0000ac01", {768, 44033}, {2, 5}},
+     {"\U00000300\U00000308\U0000ac01", {768, 44033}, {4, 7}},
+     {"\U00000300\U0000231a", {768, 8986}, {2, 5}},
+     {"\U00000300\U00000308\U0000231a", {768, 8986}, {4, 7}},
+     {"\U00000300\U00000300", {768}, {4}},
+     {"\U00000300\U00000308\U00000300", {768}, {6}},
+     {"\U00000300\U0000200d", {768}, {5}},
+     {"\U00000300\U00000308\U0000200d", {768}, {7}},
+     {"\U00000300\U00000378", {768, 888}, {2, 4}},
+     {"\U00000300\U00000308\U00000378", {768, 888}, {4, 6}},
+     {"\U0000200d\U00000020", {8205, 32}, {3, 4}},
+     {"\U0000200d\U00000308\U00000020", {8205, 32}, {5, 6}},
+     {"\U0000200d\U0000000d", {8205, 13}, {3, 4}},
+     {"\U0000200d\U00000308\U0000000d", {8205, 13}, {5, 6}},
+     {"\U0000200d\U0000000a", {8205, 10}, {3, 4}},
+     {"\U0000200d\U00000308\U0000000a", {8205, 10}, {5, 6}},
+     {"\U0000200d\U00000001", {8205, 1}, {3, 4}},
+     {"\U0000200d\U00000308\U00000001", {8205, 1}, {5, 6}},
+     {"\U0000200d\U0000034f", {8205}, {5}},
+     {"\U0000200d\U00000308\U0000034f", {8205}, {7}},
+     {"\U0000200d\U0001f1e6", {8205, 127462}, {3, 7}},
+     {"\U0000200d\U00000308\U0001f1e6", {8205, 127462}, {5, 9}},
+     {"\U0000200d\U00000600", {8205, 1536}, {3, 5}},
+     {"\U0000200d\U00000308\U00000600", {8205, 1536}, {5, 7}},
+     {"\U0000200d\U00000903", {8205}, {6}},
+     {"\U0000200d\U00000308\U00000903", {8205}, {8}},
+     {"\U0000200d\U00001100", {8205, 4352}, {3, 6}},
+     {"\U0000200d\U00000308\U00001100", {8205, 4352}, {5, 8}},
+     {"\U0000200d\U00001160", {8205, 4448}, {3, 6}},
+     {"\U0000200d\U00000308\U00001160", {8205, 4448}, {5, 8}},
+     {"\U0000200d\U000011a8", {8205, 4520}, {3, 6}},
+     {"\U0000200d\U00000308\U000011a8", {8205, 4520}, {5, 8}},
+     {"\U0000200d\U0000ac00", {8205, 44032}, {3, 6}},
+     {"\U0000200d\U00000308\U0000ac00", {8205, 44032}, {5, 8}},
+     {"\U0000200d\U0000ac01", {8205, 44033}, {3, 6}},
+     {"\U0000200d\U00000308\U0000ac01", {8205, 44033}, {5, 8}},
+     {"\U0000200d\U0000231a", {8205, 8986}, {3, 6}},
+     {"\U0000200d\U00000308\U0000231a", {8205, 8986}, {5, 8}},
+     {"\U0000200d\U00000300", {8205}, {5}},
+     {"\U0000200d\U00000308\U00000300", {8205}, {7}},
+     {"\U0000200d\U0000200d", {8205}, {6}},
+     {"\U0000200d\U00000308\U0000200d", {8205}, {8}},
+     {"\U0000200d\U00000378", {8205, 888}, {3, 5}},
+     {"\U0000200d\U00000308\U00000378", {8205, 888}, {5, 7}},
+     {"\U00000378\U00000020", {888, 32}, {2, 3}},
+     {"\U00000378\U00000308\U00000020", {888, 32}, {4, 5}},
+     {"\U00000378\U0000000d", {888, 13}, {2, 3}},
+     {"\U00000378\U00000308\U0000000d", {888, 13}, {4, 5}},
+     {"\U00000378\U0000000a", {888, 10}, {2, 3}},
+     {"\U00000378\U00000308\U0000000a", {888, 10}, {4, 5}},
+     {"\U00000378\U00000001", {888, 1}, {2, 3}},
+     {"\U00000378\U00000308\U00000001", {888, 1}, {4, 5}},
+     {"\U00000378\U0000034f", {888}, {4}},
+     {"\U00000378\U00000308\U0000034f", {888}, {6}},
+     {"\U00000378\U0001f1e6", {888, 127462}, {2, 6}},
+     {"\U00000378\U00000308\U0001f1e6", {888, 127462}, {4, 8}},
+     {"\U00000378\U00000600", {888, 1536}, {2, 4}},
+     {"\U00000378\U00000308\U00000600", {888, 1536}, {4, 6}},
+     {"\U00000378\U00000903", {888}, {5}},
+     {"\U00000378\U00000308\U00000903", {888}, {7}},
+     {"\U00000378\U00001100", {888, 4352}, {2, 5}},
+     {"\U00000378\U00000308\U00001100", {888, 4352}, {4, 7}},
+     {"\U00000378\U00001160", {888, 4448}, {2, 5}},
+     {"\U00000378\U00000308\U00001160", {888, 4448}, {4, 7}},
+     {"\U00000378\U000011a8", {888, 4520}, {2, 5}},
+     {"\U00000378\U00000308\U000011a8", {888, 4520}, {4, 7}},
+     {"\U00000378\U0000ac00", {888, 44032}, {2, 5}},
+     {"\U00000378\U00000308\U0000ac00", {888, 44032}, {4, 7}},
+     {"\U00000378\U0000ac01", {888, 44033}, {2, 5}},
+     {"\U00000378\U00000308\U0000ac01", {888, 44033}, {4, 7}},
+     {"\U00000378\U0000231a", {888, 8986}, {2, 5}},
+     {"\U00000378\U00000308\U0000231a", {888, 8986}, {4, 7}},
+     {"\U00000378\U00000300", {888}, {4}},
+     {"\U00000378\U00000308\U00000300", {888}, {6}},
+     {"\U00000378\U0000200d", {888}, {5}},
+     {"\U00000378\U00000308\U0000200d", {888}, {7}},
+     {"\U00000378\U00000378", {888, 888}, {2, 4}},
+     {"\U00000378\U00000308\U00000378", {888, 888}, {4, 6}},
+     {"\U0000000d\U0000000a\U00000061\U0000000a\U00000308", {13, 97, 10, 776}, {2, 3, 4, 6}},
+     {"\U00000061\U00000308", {97}, {3}},
+     {"\U00000020\U0000200d\U00000646", {32, 1606}, {4, 6}},
+     {"\U00000646\U0000200d\U00000020", {1606, 32}, {5, 6}},
+     {"\U00001100\U00001100", {4352}, {6}},
+     {"\U0000ac00\U000011a8\U00001100", {44032, 4352}, {6, 9}},
+     {"\U0000ac01\U000011a8\U00001100", {44033, 4352}, {6, 9}},
+     {"\U0001f1e6\U0001f1e7\U0001f1e8\U00000062", {127462, 127464, 98}, {8, 12, 13}},
+     {"\U00000061\U0001f1e6\U0001f1e7\U0001f1e8\U00000062", {97, 127462, 127464, 98}, {1, 9, 13, 14}},
+     {"\U00000061\U0001f1e6\U0001f1e7\U0000200d\U0001f1e8\U00000062", {97, 127462, 127464, 98}, {1, 12, 16, 17}},
+     {"\U00000061\U0001f1e6\U0000200d\U0001f1e7\U0001f1e8\U00000062", {97, 127462, 127463, 98}, {1, 8, 16, 17}},
+     {"\U00000061\U0001f1e6\U0001f1e7\U0001f1e8\U0001f1e9\U00000062", {97, 127462, 127464, 98}, {1, 9, 17, 18}},
+     {"\U00000061\U0000200d", {97}, {4}},
+     {"\U00000061\U00000308\U00000062", {97, 98}, {3, 4}},
+     {"\U00000061\U00000903\U00000062", {97, 98}, {4, 5}},
+     {"\U00000061\U00000600\U00000062", {97, 1536}, {1, 4}},
+     {"\U0001f476\U0001f3ff\U0001f476", {128118, 128118}, {8, 12}},
+     {"\U00000061\U0001f3ff\U0001f476", {97, 128118}, {5, 9}},
+     {"\U00000061\U0001f3ff\U0001f476\U0000200d\U0001f6d1", {97, 128118}, {5, 16}},
+     {"\U0001f476\U0001f3ff\U00000308\U0000200d\U0001f476\U0001f3ff", {128118}, {21}},
+     {"\U0001f6d1\U0000200d\U0001f6d1", {128721}, {11}},
+     {"\U00000061\U0000200d\U0001f6d1", {97, 128721}, {4, 8}},
+     {"\U00002701\U0000200d\U00002701", {9985}, {9}},
+     {"\U00000061\U0000200d\U00002701", {97, 9985}, {4, 7}}}};
+
+/// The data for UTF-16.
+///
+/// Note that most of the data for the UTF-16 and UTF-32 are identical. However
+/// since the size of the code units differ the breaks can contain different
+/// values.
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+std::array<data<wchar_t>, 602> data_utf16 = {{
+     {L"\U00000020\U00000020", {32, 32}, {1, 2}},
+     {L"\U00000020\U00000308\U00000020", {32, 32}, {2, 3}},
+     {L"\U00000020\U0000000d", {32, 13}, {1, 2}},
+     {L"\U00000020\U00000308\U0000000d", {32, 13}, {2, 3}},
+     {L"\U00000020\U0000000a", {32, 10}, {1, 2}},
+     {L"\U00000020\U00000308\U0000000a", {32, 10}, {2, 3}},
+     {L"\U00000020\U00000001", {32, 1}, {1, 2}},
+     {L"\U00000020\U00000308\U00000001", {32, 1}, {2, 3}},
+     {L"\U00000020\U0000034f", {32}, {2}},
+     {L"\U00000020\U00000308\U0000034f", {32}, {3}},
+     {L"\U00000020\U0001f1e6", {32, 127462}, {1, 3}},
+     {L"\U00000020\U00000308\U0001f1e6", {32, 127462}, {2, 4}},
+     {L"\U00000020\U00000600", {32, 1536}, {1, 2}},
+     {L"\U00000020\U00000308\U00000600", {32, 1536}, {2, 3}},
+     {L"\U00000020\U00000903", {32}, {2}},
+     {L"\U00000020\U00000308\U00000903", {32}, {3}},
+     {L"\U00000020\U00001100", {32, 4352}, {1, 2}},
+     {L"\U00000020\U00000308\U00001100", {32, 4352}, {2, 3}},
+     {L"\U00000020\U00001160", {32, 4448}, {1, 2}},
+     {L"\U00000020\U00000308\U00001160", {32, 4448}, {2, 3}},
+     {L"\U00000020\U000011a8", {32, 4520}, {1, 2}},
+     {L"\U00000020\U00000308\U000011a8", {32, 4520}, {2, 3}},
+     {L"\U00000020\U0000ac00", {32, 44032}, {1, 2}},
+     {L"\U00000020\U00000308\U0000ac00", {32, 44032}, {2, 3}},
+     {L"\U00000020\U0000ac01", {32, 44033}, {1, 2}},
+     {L"\U00000020\U00000308\U0000ac01", {32, 44033}, {2, 3}},
+     {L"\U00000020\U0000231a", {32, 8986}, {1, 2}},
+     {L"\U00000020\U00000308\U0000231a", {32, 8986}, {2, 3}},
+     {L"\U00000020\U00000300", {32}, {2}},
+     {L"\U00000020\U00000308\U00000300", {32}, {3}},
+     {L"\U00000020\U0000200d", {32}, {2}},
+     {L"\U00000020\U00000308\U0000200d", {32}, {3}},
+     {L"\U00000020\U00000378", {32, 888}, {1, 2}},
+     {L"\U00000020\U00000308\U00000378", {32, 888}, {2, 3}},
+     {L"\U0000000d\U00000020", {13, 32}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000020", {13, 776, 32}, {1, 2, 3}},
+     {L"\U0000000d\U0000000d", {13, 13}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000000d", {13, 776, 13}, {1, 2, 3}},
+     {L"\U0000000d\U0000000a", {13}, {2}},
+     {L"\U0000000d\U00000308\U0000000a", {13, 776, 10}, {1, 2, 3}},
+     {L"\U0000000d\U00000001", {13, 1}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000001", {13, 776, 1}, {1, 2, 3}},
+     {L"\U0000000d\U0000034f", {13, 847}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000034f", {13, 776}, {1, 3}},
+     {L"\U0000000d\U0001f1e6", {13, 127462}, {1, 3}},
+     {L"\U0000000d\U00000308\U0001f1e6", {13, 776, 127462}, {1, 2, 4}},
+     {L"\U0000000d\U00000600", {13, 1536}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000600", {13, 776, 1536}, {1, 2, 3}},
+     {L"\U0000000d\U00000903", {13, 2307}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000903", {13, 776}, {1, 3}},
+     {L"\U0000000d\U00001100", {13, 4352}, {1, 2}},
+     {L"\U0000000d\U00000308\U00001100", {13, 776, 4352}, {1, 2, 3}},
+     {L"\U0000000d\U00001160", {13, 4448}, {1, 2}},
+     {L"\U0000000d\U00000308\U00001160", {13, 776, 4448}, {1, 2, 3}},
+     {L"\U0000000d\U000011a8", {13, 4520}, {1, 2}},
+     {L"\U0000000d\U00000308\U000011a8", {13, 776, 4520}, {1, 2, 3}},
+     {L"\U0000000d\U0000ac00", {13, 44032}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000ac00", {13, 776, 44032}, {1, 2, 3}},
+     {L"\U0000000d\U0000ac01", {13, 44033}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000ac01", {13, 776, 44033}, {1, 2, 3}},
+     {L"\U0000000d\U0000231a", {13, 8986}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000231a", {13, 776, 8986}, {1, 2, 3}},
+     {L"\U0000000d\U00000300", {13, 768}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000300", {13, 776}, {1, 3}},
+     {L"\U0000000d\U0000200d", {13, 8205}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000200d", {13, 776}, {1, 3}},
+     {L"\U0000000d\U00000378", {13, 888}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000378", {13, 776, 888}, {1, 2, 3}},
+     {L"\U0000000a\U00000020", {10, 32}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000020", {10, 776, 32}, {1, 2, 3}},
+     {L"\U0000000a\U0000000d", {10, 13}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000000d", {10, 776, 13}, {1, 2, 3}},
+     {L"\U0000000a\U0000000a", {10, 10}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000000a", {10, 776, 10}, {1, 2, 3}},
+     {L"\U0000000a\U00000001", {10, 1}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000001", {10, 776, 1}, {1, 2, 3}},
+     {L"\U0000000a\U0000034f", {10, 847}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000034f", {10, 776}, {1, 3}},
+     {L"\U0000000a\U0001f1e6", {10, 127462}, {1, 3}},
+     {L"\U0000000a\U00000308\U0001f1e6", {10, 776, 127462}, {1, 2, 4}},
+     {L"\U0000000a\U00000600", {10, 1536}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000600", {10, 776, 1536}, {1, 2, 3}},
+     {L"\U0000000a\U00000903", {10, 2307}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000903", {10, 776}, {1, 3}},
+     {L"\U0000000a\U00001100", {10, 4352}, {1, 2}},
+     {L"\U0000000a\U00000308\U00001100", {10, 776, 4352}, {1, 2, 3}},
+     {L"\U0000000a\U00001160", {10, 4448}, {1, 2}},
+     {L"\U0000000a\U00000308\U00001160", {10, 776, 4448}, {1, 2, 3}},
+     {L"\U0000000a\U000011a8", {10, 4520}, {1, 2}},
+     {L"\U0000000a\U00000308\U000011a8", {10, 776, 4520}, {1, 2, 3}},
+     {L"\U0000000a\U0000ac00", {10, 44032}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000ac00", {10, 776, 44032}, {1, 2, 3}},
+     {L"\U0000000a\U0000ac01", {10, 44033}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000ac01", {10, 776, 44033}, {1, 2, 3}},
+     {L"\U0000000a\U0000231a", {10, 8986}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000231a", {10, 776, 8986}, {1, 2, 3}},
+     {L"\U0000000a\U00000300", {10, 768}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000300", {10, 776}, {1, 3}},
+     {L"\U0000000a\U0000200d", {10, 8205}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000200d", {10, 776}, {1, 3}},
+     {L"\U0000000a\U00000378", {10, 888}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000378", {10, 776, 888}, {1, 2, 3}},
+     {L"\U00000001\U00000020", {1, 32}, {1, 2}},
+     {L"\U00000001\U00000308\U00000020", {1, 776, 32}, {1, 2, 3}},
+     {L"\U00000001\U0000000d", {1, 13}, {1, 2}},
+     {L"\U00000001\U00000308\U0000000d", {1, 776, 13}, {1, 2, 3}},
+     {L"\U00000001\U0000000a", {1, 10}, {1, 2}},
+     {L"\U00000001\U00000308\U0000000a", {1, 776, 10}, {1, 2, 3}},
+     {L"\U00000001\U00000001", {1, 1}, {1, 2}},
+     {L"\U00000001\U00000308\U00000001", {1, 776, 1}, {1, 2, 3}},
+     {L"\U00000001\U0000034f", {1, 847}, {1, 2}},
+     {L"\U00000001\U00000308\U0000034f", {1, 776}, {1, 3}},
+     {L"\U00000001\U0001f1e6", {1, 127462}, {1, 3}},
+     {L"\U00000001\U00000308\U0001f1e6", {1, 776, 127462}, {1, 2, 4}},
+     {L"\U00000001\U00000600", {1, 1536}, {1, 2}},
+     {L"\U00000001\U00000308\U00000600", {1, 776, 1536}, {1, 2, 3}},
+     {L"\U00000001\U00000903", {1, 2307}, {1, 2}},
+     {L"\U00000001\U00000308\U00000903", {1, 776}, {1, 3}},
+     {L"\U00000001\U00001100", {1, 4352}, {1, 2}},
+     {L"\U00000001\U00000308\U00001100", {1, 776, 4352}, {1, 2, 3}},
+     {L"\U00000001\U00001160", {1, 4448}, {1, 2}},
+     {L"\U00000001\U00000308\U00001160", {1, 776, 4448}, {1, 2, 3}},
+     {L"\U00000001\U000011a8", {1, 4520}, {1, 2}},
+     {L"\U00000001\U00000308\U000011a8", {1, 776, 4520}, {1, 2, 3}},
+     {L"\U00000001\U0000ac00", {1, 44032}, {1, 2}},
+     {L"\U00000001\U00000308\U0000ac00", {1, 776, 44032}, {1, 2, 3}},
+     {L"\U00000001\U0000ac01", {1, 44033}, {1, 2}},
+     {L"\U00000001\U00000308\U0000ac01", {1, 776, 44033}, {1, 2, 3}},
+     {L"\U00000001\U0000231a", {1, 8986}, {1, 2}},
+     {L"\U00000001\U00000308\U0000231a", {1, 776, 8986}, {1, 2, 3}},
+     {L"\U00000001\U00000300", {1, 768}, {1, 2}},
+     {L"\U00000001\U00000308\U00000300", {1, 776}, {1, 3}},
+     {L"\U00000001\U0000200d", {1, 8205}, {1, 2}},
+     {L"\U00000001\U00000308\U0000200d", {1, 776}, {1, 3}},
+     {L"\U00000001\U00000378", {1, 888}, {1, 2}},
+     {L"\U00000001\U00000308\U00000378", {1, 776, 888}, {1, 2, 3}},
+     {L"\U0000034f\U00000020", {847, 32}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000020", {847, 32}, {2, 3}},
+     {L"\U0000034f\U0000000d", {847, 13}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000000d", {847, 13}, {2, 3}},
+     {L"\U0000034f\U0000000a", {847, 10}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000000a", {847, 10}, {2, 3}},
+     {L"\U0000034f\U00000001", {847, 1}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000001", {847, 1}, {2, 3}},
+     {L"\U0000034f\U0000034f", {847}, {2}},
+     {L"\U0000034f\U00000308\U0000034f", {847}, {3}},
+     {L"\U0000034f\U0001f1e6", {847, 127462}, {1, 3}},
+     {L"\U0000034f\U00000308\U0001f1e6", {847, 127462}, {2, 4}},
+     {L"\U0000034f\U00000600", {847, 1536}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000600", {847, 1536}, {2, 3}},
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+     {L"\U0000034f\U00000308\U00000903", {847}, {3}},
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+     {L"\U0000034f\U00000308\U00001100", {847, 4352}, {2, 3}},
+     {L"\U0000034f\U00001160", {847, 4448}, {1, 2}},
+     {L"\U0000034f\U00000308\U00001160", {847, 4448}, {2, 3}},
+     {L"\U0000034f\U000011a8", {847, 4520}, {1, 2}},
+     {L"\U0000034f\U00000308\U000011a8", {847, 4520}, {2, 3}},
+     {L"\U0000034f\U0000ac00", {847, 44032}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000ac00", {847, 44032}, {2, 3}},
+     {L"\U0000034f\U0000ac01", {847, 44033}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000ac01", {847, 44033}, {2, 3}},
+     {L"\U0000034f\U0000231a", {847, 8986}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000231a", {847, 8986}, {2, 3}},
+     {L"\U0000034f\U00000300", {847}, {2}},
+     {L"\U0000034f\U00000308\U00000300", {847}, {3}},
+     {L"\U0000034f\U0000200d", {847}, {2}},
+     {L"\U0000034f\U00000308\U0000200d", {847}, {3}},
+     {L"\U0000034f\U00000378", {847, 888}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000378", {847, 888}, {2, 3}},
+     {L"\U0001f1e6\U00000020", {127462, 32}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U00000020", {127462, 32}, {3, 4}},
+     {L"\U0001f1e6\U0000000d", {127462, 13}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U0000000d", {127462, 13}, {3, 4}},
+     {L"\U0001f1e6\U0000000a", {127462, 10}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U0000000a", {127462, 10}, {3, 4}},
+     {L"\U0001f1e6\U00000001", {127462, 1}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U00000001", {127462, 1}, {3, 4}},
+     {L"\U0001f1e6\U0000034f", {127462}, {3}},
+     {L"\U0001f1e6\U00000308\U0000034f", {127462}, {4}},
+     {L"\U0001f1e6\U0001f1e6", {127462}, {4}},
+     {L"\U0001f1e6\U00000308\U0001f1e6", {127462, 127462}, {3, 5}},
+     {L"\U0001f1e6\U00000600", {127462, 1536}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U00000600", {127462, 1536}, {3, 4}},
+     {L"\U0001f1e6\U00000903", {127462}, {3}},
+     {L"\U0001f1e6\U00000308\U00000903", {127462}, {4}},
+     {L"\U0001f1e6\U00001100", {127462, 4352}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U00001100", {127462, 4352}, {3, 4}},
+     {L"\U0001f1e6\U00001160", {127462, 4448}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U00001160", {127462, 4448}, {3, 4}},
+     {L"\U0001f1e6\U000011a8", {127462, 4520}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U000011a8", {127462, 4520}, {3, 4}},
+     {L"\U0001f1e6\U0000ac00", {127462, 44032}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U0000ac00", {127462, 44032}, {3, 4}},
+     {L"\U0001f1e6\U0000ac01", {127462, 44033}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U0000ac01", {127462, 44033}, {3, 4}},
+     {L"\U0001f1e6\U0000231a", {127462, 8986}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U0000231a", {127462, 8986}, {3, 4}},
+     {L"\U0001f1e6\U00000300", {127462}, {3}},
+     {L"\U0001f1e6\U00000308\U00000300", {127462}, {4}},
+     {L"\U0001f1e6\U0000200d", {127462}, {3}},
+     {L"\U0001f1e6\U00000308\U0000200d", {127462}, {4}},
+     {L"\U0001f1e6\U00000378", {127462, 888}, {2, 3}},
+     {L"\U0001f1e6\U00000308\U00000378", {127462, 888}, {3, 4}},
+     {L"\U00000600\U00000020", {1536}, {2}},
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+     {L"\U00000600\U0000000d", {1536, 13}, {1, 2}},
+     {L"\U00000600\U00000308\U0000000d", {1536, 13}, {2, 3}},
+     {L"\U00000600\U0000000a", {1536, 10}, {1, 2}},
+     {L"\U00000600\U00000308\U0000000a", {1536, 10}, {2, 3}},
+     {L"\U00000600\U00000001", {1536, 1}, {1, 2}},
+     {L"\U00000600\U00000308\U00000001", {1536, 1}, {2, 3}},
+     {L"\U00000600\U0000034f", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000034f", {1536}, {3}},
+     {L"\U00000600\U0001f1e6", {1536}, {3}},
+     {L"\U00000600\U00000308\U0001f1e6", {1536, 127462}, {2, 4}},
+     {L"\U00000600\U00000600", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000600", {1536, 1536}, {2, 3}},
+     {L"\U00000600\U00000903", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000903", {1536}, {3}},
+     {L"\U00000600\U00001100", {1536}, {2}},
+     {L"\U00000600\U00000308\U00001100", {1536, 4352}, {2, 3}},
+     {L"\U00000600\U00001160", {1536}, {2}},
+     {L"\U00000600\U00000308\U00001160", {1536, 4448}, {2, 3}},
+     {L"\U00000600\U000011a8", {1536}, {2}},
+     {L"\U00000600\U00000308\U000011a8", {1536, 4520}, {2, 3}},
+     {L"\U00000600\U0000ac00", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000ac00", {1536, 44032}, {2, 3}},
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+     {L"\U00000600\U0000231a", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000231a", {1536, 8986}, {2, 3}},
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+     {L"\U00000600\U00000308\U00000300", {1536}, {3}},
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+     {L"\U00000600\U00000308\U00000378", {1536, 888}, {2, 3}},
+     {L"\U00000903\U00000020", {2307, 32}, {1, 2}},
+     {L"\U00000903\U00000308\U00000020", {2307, 32}, {2, 3}},
+     {L"\U00000903\U0000000d", {2307, 13}, {1, 2}},
+     {L"\U00000903\U00000308\U0000000d", {2307, 13}, {2, 3}},
+     {L"\U00000903\U0000000a", {2307, 10}, {1, 2}},
+     {L"\U00000903\U00000308\U0000000a", {2307, 10}, {2, 3}},
+     {L"\U00000903\U00000001", {2307, 1}, {1, 2}},
+     {L"\U00000903\U00000308\U00000001", {2307, 1}, {2, 3}},
+     {L"\U00000903\U0000034f", {2307}, {2}},
+     {L"\U00000903\U00000308\U0000034f", {2307}, {3}},
+     {L"\U00000903\U0001f1e6", {2307, 127462}, {1, 3}},
+     {L"\U00000903\U00000308\U0001f1e6", {2307, 127462}, {2, 4}},
+     {L"\U00000903\U00000600", {2307, 1536}, {1, 2}},
+     {L"\U00000903\U00000308\U00000600", {2307, 1536}, {2, 3}},
+     {L"\U00000903\U00000903", {2307}, {2}},
+     {L"\U00000903\U00000308\U00000903", {2307}, {3}},
+     {L"\U00000903\U00001100", {2307, 4352}, {1, 2}},
+     {L"\U00000903\U00000308\U00001100", {2307, 4352}, {2, 3}},
+     {L"\U00000903\U00001160", {2307, 4448}, {1, 2}},
+     {L"\U00000903\U00000308\U00001160", {2307, 4448}, {2, 3}},
+     {L"\U00000903\U000011a8", {2307, 4520}, {1, 2}},
+     {L"\U00000903\U00000308\U000011a8", {2307, 4520}, {2, 3}},
+     {L"\U00000903\U0000ac00", {2307, 44032}, {1, 2}},
+     {L"\U00000903\U00000308\U0000ac00", {2307, 44032}, {2, 3}},
+     {L"\U00000903\U0000ac01", {2307, 44033}, {1, 2}},
+     {L"\U00000903\U00000308\U0000ac01", {2307, 44033}, {2, 3}},
+     {L"\U00000903\U0000231a", {2307, 8986}, {1, 2}},
+     {L"\U00000903\U00000308\U0000231a", {2307, 8986}, {2, 3}},
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+     {L"\U00000903\U00000308\U00000300", {2307}, {3}},
+     {L"\U00000903\U0000200d", {2307}, {2}},
+     {L"\U00000903\U00000308\U0000200d", {2307}, {3}},
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+     {L"\U00000903\U00000308\U00000378", {2307, 888}, {2, 3}},
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+     {L"\U00001100\U00000308\U00000020", {4352, 32}, {2, 3}},
+     {L"\U00001100\U0000000d", {4352, 13}, {1, 2}},
+     {L"\U00001100\U00000308\U0000000d", {4352, 13}, {2, 3}},
+     {L"\U00001100\U0000000a", {4352, 10}, {1, 2}},
+     {L"\U00001100\U00000308\U0000000a", {4352, 10}, {2, 3}},
+     {L"\U00001100\U00000001", {4352, 1}, {1, 2}},
+     {L"\U00001100\U00000308\U00000001", {4352, 1}, {2, 3}},
+     {L"\U00001100\U0000034f", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000034f", {4352}, {3}},
+     {L"\U00001100\U0001f1e6", {4352, 127462}, {1, 3}},
+     {L"\U00001100\U00000308\U0001f1e6", {4352, 127462}, {2, 4}},
+     {L"\U00001100\U00000600", {4352, 1536}, {1, 2}},
+     {L"\U00001100\U00000308\U00000600", {4352, 1536}, {2, 3}},
+     {L"\U00001100\U00000903", {4352}, {2}},
+     {L"\U00001100\U00000308\U00000903", {4352}, {3}},
+     {L"\U00001100\U00001100", {4352}, {2}},
+     {L"\U00001100\U00000308\U00001100", {4352, 4352}, {2, 3}},
+     {L"\U00001100\U00001160", {4352}, {2}},
+     {L"\U00001100\U00000308\U00001160", {4352, 4448}, {2, 3}},
+     {L"\U00001100\U000011a8", {4352, 4520}, {1, 2}},
+     {L"\U00001100\U00000308\U000011a8", {4352, 4520}, {2, 3}},
+     {L"\U00001100\U0000ac00", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000ac00", {4352, 44032}, {2, 3}},
+     {L"\U00001100\U0000ac01", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000ac01", {4352, 44033}, {2, 3}},
+     {L"\U00001100\U0000231a", {4352, 8986}, {1, 2}},
+     {L"\U00001100\U00000308\U0000231a", {4352, 8986}, {2, 3}},
+     {L"\U00001100\U00000300", {4352}, {2}},
+     {L"\U00001100\U00000308\U00000300", {4352}, {3}},
+     {L"\U00001100\U0000200d", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000200d", {4352}, {3}},
+     {L"\U00001100\U00000378", {4352, 888}, {1, 2}},
+     {L"\U00001100\U00000308\U00000378", {4352, 888}, {2, 3}},
+     {L"\U00001160\U00000020", {4448, 32}, {1, 2}},
+     {L"\U00001160\U00000308\U00000020", {4448, 32}, {2, 3}},
+     {L"\U00001160\U0000000d", {4448, 13}, {1, 2}},
+     {L"\U00001160\U00000308\U0000000d", {4448, 13}, {2, 3}},
+     {L"\U00001160\U0000000a", {4448, 10}, {1, 2}},
+     {L"\U00001160\U00000308\U0000000a", {4448, 10}, {2, 3}},
+     {L"\U00001160\U00000001", {4448, 1}, {1, 2}},
+     {L"\U00001160\U00000308\U00000001", {4448, 1}, {2, 3}},
+     {L"\U00001160\U0000034f", {4448}, {2}},
+     {L"\U00001160\U00000308\U0000034f", {4448}, {3}},
+     {L"\U00001160\U0001f1e6", {4448, 127462}, {1, 3}},
+     {L"\U00001160\U00000308\U0001f1e6", {4448, 127462}, {2, 4}},
+     {L"\U00001160\U00000600", {4448, 1536}, {1, 2}},
+     {L"\U00001160\U00000308\U00000600", {4448, 1536}, {2, 3}},
+     {L"\U00001160\U00000903", {4448}, {2}},
+     {L"\U00001160\U00000308\U00000903", {4448}, {3}},
+     {L"\U00001160\U00001100", {4448, 4352}, {1, 2}},
+     {L"\U00001160\U00000308\U00001100", {4448, 4352}, {2, 3}},
+     {L"\U00001160\U00001160", {4448}, {2}},
+     {L"\U00001160\U00000308\U00001160", {4448, 4448}, {2, 3}},
+     {L"\U00001160\U000011a8", {4448}, {2}},
+     {L"\U00001160\U00000308\U000011a8", {4448, 4520}, {2, 3}},
+     {L"\U00001160\U0000ac00", {4448, 44032}, {1, 2}},
+     {L"\U00001160\U00000308\U0000ac00", {4448, 44032}, {2, 3}},
+     {L"\U00001160\U0000ac01", {4448, 44033}, {1, 2}},
+     {L"\U00001160\U00000308\U0000ac01", {4448, 44033}, {2, 3}},
+     {L"\U00001160\U0000231a", {4448, 8986}, {1, 2}},
+     {L"\U00001160\U00000308\U0000231a", {4448, 8986}, {2, 3}},
+     {L"\U00001160\U00000300", {4448}, {2}},
+     {L"\U00001160\U00000308\U00000300", {4448}, {3}},
+     {L"\U00001160\U0000200d", {4448}, {2}},
+     {L"\U00001160\U00000308\U0000200d", {4448}, {3}},
+     {L"\U00001160\U00000378", {4448, 888}, {1, 2}},
+     {L"\U00001160\U00000308\U00000378", {4448, 888}, {2, 3}},
+     {L"\U000011a8\U00000020", {4520, 32}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000020", {4520, 32}, {2, 3}},
+     {L"\U000011a8\U0000000d", {4520, 13}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000000d", {4520, 13}, {2, 3}},
+     {L"\U000011a8\U0000000a", {4520, 10}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000000a", {4520, 10}, {2, 3}},
+     {L"\U000011a8\U00000001", {4520, 1}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000001", {4520, 1}, {2, 3}},
+     {L"\U000011a8\U0000034f", {4520}, {2}},
+     {L"\U000011a8\U00000308\U0000034f", {4520}, {3}},
+     {L"\U000011a8\U0001f1e6", {4520, 127462}, {1, 3}},
+     {L"\U000011a8\U00000308\U0001f1e6", {4520, 127462}, {2, 4}},
+     {L"\U000011a8\U00000600", {4520, 1536}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000600", {4520, 1536}, {2, 3}},
+     {L"\U000011a8\U00000903", {4520}, {2}},
+     {L"\U000011a8\U00000308\U00000903", {4520}, {3}},
+     {L"\U000011a8\U00001100", {4520, 4352}, {1, 2}},
+     {L"\U000011a8\U00000308\U00001100", {4520, 4352}, {2, 3}},
+     {L"\U000011a8\U00001160", {4520, 4448}, {1, 2}},
+     {L"\U000011a8\U00000308\U00001160", {4520, 4448}, {2, 3}},
+     {L"\U000011a8\U000011a8", {4520}, {2}},
+     {L"\U000011a8\U00000308\U000011a8", {4520, 4520}, {2, 3}},
+     {L"\U000011a8\U0000ac00", {4520, 44032}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000ac00", {4520, 44032}, {2, 3}},
+     {L"\U000011a8\U0000ac01", {4520, 44033}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000ac01", {4520, 44033}, {2, 3}},
+     {L"\U000011a8\U0000231a", {4520, 8986}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000231a", {4520, 8986}, {2, 3}},
+     {L"\U000011a8\U00000300", {4520}, {2}},
+     {L"\U000011a8\U00000308\U00000300", {4520}, {3}},
+     {L"\U000011a8\U0000200d", {4520}, {2}},
+     {L"\U000011a8\U00000308\U0000200d", {4520}, {3}},
+     {L"\U000011a8\U00000378", {4520, 888}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000378", {4520, 888}, {2, 3}},
+     {L"\U0000ac00\U00000020", {44032, 32}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000020", {44032, 32}, {2, 3}},
+     {L"\U0000ac00\U0000000d", {44032, 13}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000000d", {44032, 13}, {2, 3}},
+     {L"\U0000ac00\U0000000a", {44032, 10}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000000a", {44032, 10}, {2, 3}},
+     {L"\U0000ac00\U00000001", {44032, 1}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000001", {44032, 1}, {2, 3}},
+     {L"\U0000ac00\U0000034f", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U0000034f", {44032}, {3}},
+     {L"\U0000ac00\U0001f1e6", {44032, 127462}, {1, 3}},
+     {L"\U0000ac00\U00000308\U0001f1e6", {44032, 127462}, {2, 4}},
+     {L"\U0000ac00\U00000600", {44032, 1536}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000600", {44032, 1536}, {2, 3}},
+     {L"\U0000ac00\U00000903", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U00000903", {44032}, {3}},
+     {L"\U0000ac00\U00001100", {44032, 4352}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00001100", {44032, 4352}, {2, 3}},
+     {L"\U0000ac00\U00001160", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U00001160", {44032, 4448}, {2, 3}},
+     {L"\U0000ac00\U000011a8", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U000011a8", {44032, 4520}, {2, 3}},
+     {L"\U0000ac00\U0000ac00", {44032, 44032}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000ac00", {44032, 44032}, {2, 3}},
+     {L"\U0000ac00\U0000ac01", {44032, 44033}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000ac01", {44032, 44033}, {2, 3}},
+     {L"\U0000ac00\U0000231a", {44032, 8986}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000231a", {44032, 8986}, {2, 3}},
+     {L"\U0000ac00\U00000300", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U00000300", {44032}, {3}},
+     {L"\U0000ac00\U0000200d", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U0000200d", {44032}, {3}},
+     {L"\U0000ac00\U00000378", {44032, 888}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000378", {44032, 888}, {2, 3}},
+     {L"\U0000ac01\U00000020", {44033, 32}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000020", {44033, 32}, {2, 3}},
+     {L"\U0000ac01\U0000000d", {44033, 13}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000000d", {44033, 13}, {2, 3}},
+     {L"\U0000ac01\U0000000a", {44033, 10}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000000a", {44033, 10}, {2, 3}},
+     {L"\U0000ac01\U00000001", {44033, 1}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000001", {44033, 1}, {2, 3}},
+     {L"\U0000ac01\U0000034f", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U0000034f", {44033}, {3}},
+     {L"\U0000ac01\U0001f1e6", {44033, 127462}, {1, 3}},
+     {L"\U0000ac01\U00000308\U0001f1e6", {44033, 127462}, {2, 4}},
+     {L"\U0000ac01\U00000600", {44033, 1536}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000600", {44033, 1536}, {2, 3}},
+     {L"\U0000ac01\U00000903", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U00000903", {44033}, {3}},
+     {L"\U0000ac01\U00001100", {44033, 4352}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00001100", {44033, 4352}, {2, 3}},
+     {L"\U0000ac01\U00001160", {44033, 4448}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00001160", {44033, 4448}, {2, 3}},
+     {L"\U0000ac01\U000011a8", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U000011a8", {44033, 4520}, {2, 3}},
+     {L"\U0000ac01\U0000ac00", {44033, 44032}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000ac00", {44033, 44032}, {2, 3}},
+     {L"\U0000ac01\U0000ac01", {44033, 44033}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000ac01", {44033, 44033}, {2, 3}},
+     {L"\U0000ac01\U0000231a", {44033, 8986}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000231a", {44033, 8986}, {2, 3}},
+     {L"\U0000ac01\U00000300", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U00000300", {44033}, {3}},
+     {L"\U0000ac01\U0000200d", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U0000200d", {44033}, {3}},
+     {L"\U0000ac01\U00000378", {44033, 888}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000378", {44033, 888}, {2, 3}},
+     {L"\U0000231a\U00000020", {8986, 32}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000020", {8986, 32}, {2, 3}},
+     {L"\U0000231a\U0000000d", {8986, 13}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000000d", {8986, 13}, {2, 3}},
+     {L"\U0000231a\U0000000a", {8986, 10}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000000a", {8986, 10}, {2, 3}},
+     {L"\U0000231a\U00000001", {8986, 1}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000001", {8986, 1}, {2, 3}},
+     {L"\U0000231a\U0000034f", {8986}, {2}},
+     {L"\U0000231a\U00000308\U0000034f", {8986}, {3}},
+     {L"\U0000231a\U0001f1e6", {8986, 127462}, {1, 3}},
+     {L"\U0000231a\U00000308\U0001f1e6", {8986, 127462}, {2, 4}},
+     {L"\U0000231a\U00000600", {8986, 1536}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000600", {8986, 1536}, {2, 3}},
+     {L"\U0000231a\U00000903", {8986}, {2}},
+     {L"\U0000231a\U00000308\U00000903", {8986}, {3}},
+     {L"\U0000231a\U00001100", {8986, 4352}, {1, 2}},
+     {L"\U0000231a\U00000308\U00001100", {8986, 4352}, {2, 3}},
+     {L"\U0000231a\U00001160", {8986, 4448}, {1, 2}},
+     {L"\U0000231a\U00000308\U00001160", {8986, 4448}, {2, 3}},
+     {L"\U0000231a\U000011a8", {8986, 4520}, {1, 2}},
+     {L"\U0000231a\U00000308\U000011a8", {8986, 4520}, {2, 3}},
+     {L"\U0000231a\U0000ac00", {8986, 44032}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000ac00", {8986, 44032}, {2, 3}},
+     {L"\U0000231a\U0000ac01", {8986, 44033}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000ac01", {8986, 44033}, {2, 3}},
+     {L"\U0000231a\U0000231a", {8986, 8986}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000231a", {8986, 8986}, {2, 3}},
+     {L"\U0000231a\U00000300", {8986}, {2}},
+     {L"\U0000231a\U00000308\U00000300", {8986}, {3}},
+     {L"\U0000231a\U0000200d", {8986}, {2}},
+     {L"\U0000231a\U00000308\U0000200d", {8986}, {3}},
+     {L"\U0000231a\U00000378", {8986, 888}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000378", {8986, 888}, {2, 3}},
+     {L"\U00000300\U00000020", {768, 32}, {1, 2}},
+     {L"\U00000300\U00000308\U00000020", {768, 32}, {2, 3}},
+     {L"\U00000300\U0000000d", {768, 13}, {1, 2}},
+     {L"\U00000300\U00000308\U0000000d", {768, 13}, {2, 3}},
+     {L"\U00000300\U0000000a", {768, 10}, {1, 2}},
+     {L"\U00000300\U00000308\U0000000a", {768, 10}, {2, 3}},
+     {L"\U00000300\U00000001", {768, 1}, {1, 2}},
+     {L"\U00000300\U00000308\U00000001", {768, 1}, {2, 3}},
+     {L"\U00000300\U0000034f", {768}, {2}},
+     {L"\U00000300\U00000308\U0000034f", {768}, {3}},
+     {L"\U00000300\U0001f1e6", {768, 127462}, {1, 3}},
+     {L"\U00000300\U00000308\U0001f1e6", {768, 127462}, {2, 4}},
+     {L"\U00000300\U00000600", {768, 1536}, {1, 2}},
+     {L"\U00000300\U00000308\U00000600", {768, 1536}, {2, 3}},
+     {L"\U00000300\U00000903", {768}, {2}},
+     {L"\U00000300\U00000308\U00000903", {768}, {3}},
+     {L"\U00000300\U00001100", {768, 4352}, {1, 2}},
+     {L"\U00000300\U00000308\U00001100", {768, 4352}, {2, 3}},
+     {L"\U00000300\U00001160", {768, 4448}, {1, 2}},
+     {L"\U00000300\U00000308\U00001160", {768, 4448}, {2, 3}},
+     {L"\U00000300\U000011a8", {768, 4520}, {1, 2}},
+     {L"\U00000300\U00000308\U000011a8", {768, 4520}, {2, 3}},
+     {L"\U00000300\U0000ac00", {768, 44032}, {1, 2}},
+     {L"\U00000300\U00000308\U0000ac00", {768, 44032}, {2, 3}},
+     {L"\U00000300\U0000ac01", {768, 44033}, {1, 2}},
+     {L"\U00000300\U00000308\U0000ac01", {768, 44033}, {2, 3}},
+     {L"\U00000300\U0000231a", {768, 8986}, {1, 2}},
+     {L"\U00000300\U00000308\U0000231a", {768, 8986}, {2, 3}},
+     {L"\U00000300\U00000300", {768}, {2}},
+     {L"\U00000300\U00000308\U00000300", {768}, {3}},
+     {L"\U00000300\U0000200d", {768}, {2}},
+     {L"\U00000300\U00000308\U0000200d", {768}, {3}},
+     {L"\U00000300\U00000378", {768, 888}, {1, 2}},
+     {L"\U00000300\U00000308\U00000378", {768, 888}, {2, 3}},
+     {L"\U0000200d\U00000020", {8205, 32}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000020", {8205, 32}, {2, 3}},
+     {L"\U0000200d\U0000000d", {8205, 13}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000000d", {8205, 13}, {2, 3}},
+     {L"\U0000200d\U0000000a", {8205, 10}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000000a", {8205, 10}, {2, 3}},
+     {L"\U0000200d\U00000001", {8205, 1}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000001", {8205, 1}, {2, 3}},
+     {L"\U0000200d\U0000034f", {8205}, {2}},
+     {L"\U0000200d\U00000308\U0000034f", {8205}, {3}},
+     {L"\U0000200d\U0001f1e6", {8205, 127462}, {1, 3}},
+     {L"\U0000200d\U00000308\U0001f1e6", {8205, 127462}, {2, 4}},
+     {L"\U0000200d\U00000600", {8205, 1536}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000600", {8205, 1536}, {2, 3}},
+     {L"\U0000200d\U00000903", {8205}, {2}},
+     {L"\U0000200d\U00000308\U00000903", {8205}, {3}},
+     {L"\U0000200d\U00001100", {8205, 4352}, {1, 2}},
+     {L"\U0000200d\U00000308\U00001100", {8205, 4352}, {2, 3}},
+     {L"\U0000200d\U00001160", {8205, 4448}, {1, 2}},
+     {L"\U0000200d\U00000308\U00001160", {8205, 4448}, {2, 3}},
+     {L"\U0000200d\U000011a8", {8205, 4520}, {1, 2}},
+     {L"\U0000200d\U00000308\U000011a8", {8205, 4520}, {2, 3}},
+     {L"\U0000200d\U0000ac00", {8205, 44032}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000ac00", {8205, 44032}, {2, 3}},
+     {L"\U0000200d\U0000ac01", {8205, 44033}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000ac01", {8205, 44033}, {2, 3}},
+     {L"\U0000200d\U0000231a", {8205, 8986}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000231a", {8205, 8986}, {2, 3}},
+     {L"\U0000200d\U00000300", {8205}, {2}},
+     {L"\U0000200d\U00000308\U00000300", {8205}, {3}},
+     {L"\U0000200d\U0000200d", {8205}, {2}},
+     {L"\U0000200d\U00000308\U0000200d", {8205}, {3}},
+     {L"\U0000200d\U00000378", {8205, 888}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000378", {8205, 888}, {2, 3}},
+     {L"\U00000378\U00000020", {888, 32}, {1, 2}},
+     {L"\U00000378\U00000308\U00000020", {888, 32}, {2, 3}},
+     {L"\U00000378\U0000000d", {888, 13}, {1, 2}},
+     {L"\U00000378\U00000308\U0000000d", {888, 13}, {2, 3}},
+     {L"\U00000378\U0000000a", {888, 10}, {1, 2}},
+     {L"\U00000378\U00000308\U0000000a", {888, 10}, {2, 3}},
+     {L"\U00000378\U00000001", {888, 1}, {1, 2}},
+     {L"\U00000378\U00000308\U00000001", {888, 1}, {2, 3}},
+     {L"\U00000378\U0000034f", {888}, {2}},
+     {L"\U00000378\U00000308\U0000034f", {888}, {3}},
+     {L"\U00000378\U0001f1e6", {888, 127462}, {1, 3}},
+     {L"\U00000378\U00000308\U0001f1e6", {888, 127462}, {2, 4}},
+     {L"\U00000378\U00000600", {888, 1536}, {1, 2}},
+     {L"\U00000378\U00000308\U00000600", {888, 1536}, {2, 3}},
+     {L"\U00000378\U00000903", {888}, {2}},
+     {L"\U00000378\U00000308\U00000903", {888}, {3}},
+     {L"\U00000378\U00001100", {888, 4352}, {1, 2}},
+     {L"\U00000378\U00000308\U00001100", {888, 4352}, {2, 3}},
+     {L"\U00000378\U00001160", {888, 4448}, {1, 2}},
+     {L"\U00000378\U00000308\U00001160", {888, 4448}, {2, 3}},
+     {L"\U00000378\U000011a8", {888, 4520}, {1, 2}},
+     {L"\U00000378\U00000308\U000011a8", {888, 4520}, {2, 3}},
+     {L"\U00000378\U0000ac00", {888, 44032}, {1, 2}},
+     {L"\U00000378\U00000308\U0000ac00", {888, 44032}, {2, 3}},
+     {L"\U00000378\U0000ac01", {888, 44033}, {1, 2}},
+     {L"\U00000378\U00000308\U0000ac01", {888, 44033}, {2, 3}},
+     {L"\U00000378\U0000231a", {888, 8986}, {1, 2}},
+     {L"\U00000378\U00000308\U0000231a", {888, 8986}, {2, 3}},
+     {L"\U00000378\U00000300", {888}, {2}},
+     {L"\U00000378\U00000308\U00000300", {888}, {3}},
+     {L"\U00000378\U0000200d", {888}, {2}},
+     {L"\U00000378\U00000308\U0000200d", {888}, {3}},
+     {L"\U00000378\U00000378", {888, 888}, {1, 2}},
+     {L"\U00000378\U00000308\U00000378", {888, 888}, {2, 3}},
+     {L"\U0000000d\U0000000a\U00000061\U0000000a\U00000308", {13, 97, 10, 776}, {2, 3, 4, 5}},
+     {L"\U00000061\U00000308", {97}, {2}},
+     {L"\U00000020\U0000200d\U00000646", {32, 1606}, {2, 3}},
+     {L"\U00000646\U0000200d\U00000020", {1606, 32}, {2, 3}},
+     {L"\U00001100\U00001100", {4352}, {2}},
+     {L"\U0000ac00\U000011a8\U00001100", {44032, 4352}, {2, 3}},
+     {L"\U0000ac01\U000011a8\U00001100", {44033, 4352}, {2, 3}},
+     {L"\U0001f1e6\U0001f1e7\U0001f1e8\U00000062", {127462, 127464, 98}, {4, 6, 7}},
+     {L"\U00000061\U0001f1e6\U0001f1e7\U0001f1e8\U00000062", {97, 127462, 127464, 98}, {1, 5, 7, 8}},
+     {L"\U00000061\U0001f1e6\U0001f1e7\U0000200d\U0001f1e8\U00000062", {97, 127462, 127464, 98}, {1, 6, 8, 9}},
+     {L"\U00000061\U0001f1e6\U0000200d\U0001f1e7\U0001f1e8\U00000062", {97, 127462, 127463, 98}, {1, 4, 8, 9}},
+     {L"\U00000061\U0001f1e6\U0001f1e7\U0001f1e8\U0001f1e9\U00000062", {97, 127462, 127464, 98}, {1, 5, 9, 10}},
+     {L"\U00000061\U0000200d", {97}, {2}},
+     {L"\U00000061\U00000308\U00000062", {97, 98}, {2, 3}},
+     {L"\U00000061\U00000903\U00000062", {97, 98}, {2, 3}},
+     {L"\U00000061\U00000600\U00000062", {97, 1536}, {1, 3}},
+     {L"\U0001f476\U0001f3ff\U0001f476", {128118, 128118}, {4, 6}},
+     {L"\U00000061\U0001f3ff\U0001f476", {97, 128118}, {3, 5}},
+     {L"\U00000061\U0001f3ff\U0001f476\U0000200d\U0001f6d1", {97, 128118}, {3, 8}},
+     {L"\U0001f476\U0001f3ff\U00000308\U0000200d\U0001f476\U0001f3ff", {128118}, {10}},
+     {L"\U0001f6d1\U0000200d\U0001f6d1", {128721}, {5}},
+     {L"\U00000061\U0000200d\U0001f6d1", {97, 128721}, {2, 4}},
+     {L"\U00002701\U0000200d\U00002701", {9985}, {3}},
+     {L"\U00000061\U0000200d\U00002701", {97, 9985}, {2, 3}}}};
+
+/// The data for UTF-8.
+///
+/// Note that most of the data for the UTF-16 and UTF-32 are identical. However
+/// since the size of the code units differ the breaks can contain different
+/// values.
+std::array<data<wchar_t>, 602> data_utf32 = {{
+     {L"\U00000020\U00000020", {32, 32}, {1, 2}},
+     {L"\U00000020\U00000308\U00000020", {32, 32}, {2, 3}},
+     {L"\U00000020\U0000000d", {32, 13}, {1, 2}},
+     {L"\U00000020\U00000308\U0000000d", {32, 13}, {2, 3}},
+     {L"\U00000020\U0000000a", {32, 10}, {1, 2}},
+     {L"\U00000020\U00000308\U0000000a", {32, 10}, {2, 3}},
+     {L"\U00000020\U00000001", {32, 1}, {1, 2}},
+     {L"\U00000020\U00000308\U00000001", {32, 1}, {2, 3}},
+     {L"\U00000020\U0000034f", {32}, {2}},
+     {L"\U00000020\U00000308\U0000034f", {32}, {3}},
+     {L"\U00000020\U0001f1e6", {32, 127462}, {1, 2}},
+     {L"\U00000020\U00000308\U0001f1e6", {32, 127462}, {2, 3}},
+     {L"\U00000020\U00000600", {32, 1536}, {1, 2}},
+     {L"\U00000020\U00000308\U00000600", {32, 1536}, {2, 3}},
+     {L"\U00000020\U00000903", {32}, {2}},
+     {L"\U00000020\U00000308\U00000903", {32}, {3}},
+     {L"\U00000020\U00001100", {32, 4352}, {1, 2}},
+     {L"\U00000020\U00000308\U00001100", {32, 4352}, {2, 3}},
+     {L"\U00000020\U00001160", {32, 4448}, {1, 2}},
+     {L"\U00000020\U00000308\U00001160", {32, 4448}, {2, 3}},
+     {L"\U00000020\U000011a8", {32, 4520}, {1, 2}},
+     {L"\U00000020\U00000308\U000011a8", {32, 4520}, {2, 3}},
+     {L"\U00000020\U0000ac00", {32, 44032}, {1, 2}},
+     {L"\U00000020\U00000308\U0000ac00", {32, 44032}, {2, 3}},
+     {L"\U00000020\U0000ac01", {32, 44033}, {1, 2}},
+     {L"\U00000020\U00000308\U0000ac01", {32, 44033}, {2, 3}},
+     {L"\U00000020\U0000231a", {32, 8986}, {1, 2}},
+     {L"\U00000020\U00000308\U0000231a", {32, 8986}, {2, 3}},
+     {L"\U00000020\U00000300", {32}, {2}},
+     {L"\U00000020\U00000308\U00000300", {32}, {3}},
+     {L"\U00000020\U0000200d", {32}, {2}},
+     {L"\U00000020\U00000308\U0000200d", {32}, {3}},
+     {L"\U00000020\U00000378", {32, 888}, {1, 2}},
+     {L"\U00000020\U00000308\U00000378", {32, 888}, {2, 3}},
+     {L"\U0000000d\U00000020", {13, 32}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000020", {13, 776, 32}, {1, 2, 3}},
+     {L"\U0000000d\U0000000d", {13, 13}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000000d", {13, 776, 13}, {1, 2, 3}},
+     {L"\U0000000d\U0000000a", {13}, {2}},
+     {L"\U0000000d\U00000308\U0000000a", {13, 776, 10}, {1, 2, 3}},
+     {L"\U0000000d\U00000001", {13, 1}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000001", {13, 776, 1}, {1, 2, 3}},
+     {L"\U0000000d\U0000034f", {13, 847}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000034f", {13, 776}, {1, 3}},
+     {L"\U0000000d\U0001f1e6", {13, 127462}, {1, 2}},
+     {L"\U0000000d\U00000308\U0001f1e6", {13, 776, 127462}, {1, 2, 3}},
+     {L"\U0000000d\U00000600", {13, 1536}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000600", {13, 776, 1536}, {1, 2, 3}},
+     {L"\U0000000d\U00000903", {13, 2307}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000903", {13, 776}, {1, 3}},
+     {L"\U0000000d\U00001100", {13, 4352}, {1, 2}},
+     {L"\U0000000d\U00000308\U00001100", {13, 776, 4352}, {1, 2, 3}},
+     {L"\U0000000d\U00001160", {13, 4448}, {1, 2}},
+     {L"\U0000000d\U00000308\U00001160", {13, 776, 4448}, {1, 2, 3}},
+     {L"\U0000000d\U000011a8", {13, 4520}, {1, 2}},
+     {L"\U0000000d\U00000308\U000011a8", {13, 776, 4520}, {1, 2, 3}},
+     {L"\U0000000d\U0000ac00", {13, 44032}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000ac00", {13, 776, 44032}, {1, 2, 3}},
+     {L"\U0000000d\U0000ac01", {13, 44033}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000ac01", {13, 776, 44033}, {1, 2, 3}},
+     {L"\U0000000d\U0000231a", {13, 8986}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000231a", {13, 776, 8986}, {1, 2, 3}},
+     {L"\U0000000d\U00000300", {13, 768}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000300", {13, 776}, {1, 3}},
+     {L"\U0000000d\U0000200d", {13, 8205}, {1, 2}},
+     {L"\U0000000d\U00000308\U0000200d", {13, 776}, {1, 3}},
+     {L"\U0000000d\U00000378", {13, 888}, {1, 2}},
+     {L"\U0000000d\U00000308\U00000378", {13, 776, 888}, {1, 2, 3}},
+     {L"\U0000000a\U00000020", {10, 32}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000020", {10, 776, 32}, {1, 2, 3}},
+     {L"\U0000000a\U0000000d", {10, 13}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000000d", {10, 776, 13}, {1, 2, 3}},
+     {L"\U0000000a\U0000000a", {10, 10}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000000a", {10, 776, 10}, {1, 2, 3}},
+     {L"\U0000000a\U00000001", {10, 1}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000001", {10, 776, 1}, {1, 2, 3}},
+     {L"\U0000000a\U0000034f", {10, 847}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000034f", {10, 776}, {1, 3}},
+     {L"\U0000000a\U0001f1e6", {10, 127462}, {1, 2}},
+     {L"\U0000000a\U00000308\U0001f1e6", {10, 776, 127462}, {1, 2, 3}},
+     {L"\U0000000a\U00000600", {10, 1536}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000600", {10, 776, 1536}, {1, 2, 3}},
+     {L"\U0000000a\U00000903", {10, 2307}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000903", {10, 776}, {1, 3}},
+     {L"\U0000000a\U00001100", {10, 4352}, {1, 2}},
+     {L"\U0000000a\U00000308\U00001100", {10, 776, 4352}, {1, 2, 3}},
+     {L"\U0000000a\U00001160", {10, 4448}, {1, 2}},
+     {L"\U0000000a\U00000308\U00001160", {10, 776, 4448}, {1, 2, 3}},
+     {L"\U0000000a\U000011a8", {10, 4520}, {1, 2}},
+     {L"\U0000000a\U00000308\U000011a8", {10, 776, 4520}, {1, 2, 3}},
+     {L"\U0000000a\U0000ac00", {10, 44032}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000ac00", {10, 776, 44032}, {1, 2, 3}},
+     {L"\U0000000a\U0000ac01", {10, 44033}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000ac01", {10, 776, 44033}, {1, 2, 3}},
+     {L"\U0000000a\U0000231a", {10, 8986}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000231a", {10, 776, 8986}, {1, 2, 3}},
+     {L"\U0000000a\U00000300", {10, 768}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000300", {10, 776}, {1, 3}},
+     {L"\U0000000a\U0000200d", {10, 8205}, {1, 2}},
+     {L"\U0000000a\U00000308\U0000200d", {10, 776}, {1, 3}},
+     {L"\U0000000a\U00000378", {10, 888}, {1, 2}},
+     {L"\U0000000a\U00000308\U00000378", {10, 776, 888}, {1, 2, 3}},
+     {L"\U00000001\U00000020", {1, 32}, {1, 2}},
+     {L"\U00000001\U00000308\U00000020", {1, 776, 32}, {1, 2, 3}},
+     {L"\U00000001\U0000000d", {1, 13}, {1, 2}},
+     {L"\U00000001\U00000308\U0000000d", {1, 776, 13}, {1, 2, 3}},
+     {L"\U00000001\U0000000a", {1, 10}, {1, 2}},
+     {L"\U00000001\U00000308\U0000000a", {1, 776, 10}, {1, 2, 3}},
+     {L"\U00000001\U00000001", {1, 1}, {1, 2}},
+     {L"\U00000001\U00000308\U00000001", {1, 776, 1}, {1, 2, 3}},
+     {L"\U00000001\U0000034f", {1, 847}, {1, 2}},
+     {L"\U00000001\U00000308\U0000034f", {1, 776}, {1, 3}},
+     {L"\U00000001\U0001f1e6", {1, 127462}, {1, 2}},
+     {L"\U00000001\U00000308\U0001f1e6", {1, 776, 127462}, {1, 2, 3}},
+     {L"\U00000001\U00000600", {1, 1536}, {1, 2}},
+     {L"\U00000001\U00000308\U00000600", {1, 776, 1536}, {1, 2, 3}},
+     {L"\U00000001\U00000903", {1, 2307}, {1, 2}},
+     {L"\U00000001\U00000308\U00000903", {1, 776}, {1, 3}},
+     {L"\U00000001\U00001100", {1, 4352}, {1, 2}},
+     {L"\U00000001\U00000308\U00001100", {1, 776, 4352}, {1, 2, 3}},
+     {L"\U00000001\U00001160", {1, 4448}, {1, 2}},
+     {L"\U00000001\U00000308\U00001160", {1, 776, 4448}, {1, 2, 3}},
+     {L"\U00000001\U000011a8", {1, 4520}, {1, 2}},
+     {L"\U00000001\U00000308\U000011a8", {1, 776, 4520}, {1, 2, 3}},
+     {L"\U00000001\U0000ac00", {1, 44032}, {1, 2}},
+     {L"\U00000001\U00000308\U0000ac00", {1, 776, 44032}, {1, 2, 3}},
+     {L"\U00000001\U0000ac01", {1, 44033}, {1, 2}},
+     {L"\U00000001\U00000308\U0000ac01", {1, 776, 44033}, {1, 2, 3}},
+     {L"\U00000001\U0000231a", {1, 8986}, {1, 2}},
+     {L"\U00000001\U00000308\U0000231a", {1, 776, 8986}, {1, 2, 3}},
+     {L"\U00000001\U00000300", {1, 768}, {1, 2}},
+     {L"\U00000001\U00000308\U00000300", {1, 776}, {1, 3}},
+     {L"\U00000001\U0000200d", {1, 8205}, {1, 2}},
+     {L"\U00000001\U00000308\U0000200d", {1, 776}, {1, 3}},
+     {L"\U00000001\U00000378", {1, 888}, {1, 2}},
+     {L"\U00000001\U00000308\U00000378", {1, 776, 888}, {1, 2, 3}},
+     {L"\U0000034f\U00000020", {847, 32}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000020", {847, 32}, {2, 3}},
+     {L"\U0000034f\U0000000d", {847, 13}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000000d", {847, 13}, {2, 3}},
+     {L"\U0000034f\U0000000a", {847, 10}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000000a", {847, 10}, {2, 3}},
+     {L"\U0000034f\U00000001", {847, 1}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000001", {847, 1}, {2, 3}},
+     {L"\U0000034f\U0000034f", {847}, {2}},
+     {L"\U0000034f\U00000308\U0000034f", {847}, {3}},
+     {L"\U0000034f\U0001f1e6", {847, 127462}, {1, 2}},
+     {L"\U0000034f\U00000308\U0001f1e6", {847, 127462}, {2, 3}},
+     {L"\U0000034f\U00000600", {847, 1536}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000600", {847, 1536}, {2, 3}},
+     {L"\U0000034f\U00000903", {847}, {2}},
+     {L"\U0000034f\U00000308\U00000903", {847}, {3}},
+     {L"\U0000034f\U00001100", {847, 4352}, {1, 2}},
+     {L"\U0000034f\U00000308\U00001100", {847, 4352}, {2, 3}},
+     {L"\U0000034f\U00001160", {847, 4448}, {1, 2}},
+     {L"\U0000034f\U00000308\U00001160", {847, 4448}, {2, 3}},
+     {L"\U0000034f\U000011a8", {847, 4520}, {1, 2}},
+     {L"\U0000034f\U00000308\U000011a8", {847, 4520}, {2, 3}},
+     {L"\U0000034f\U0000ac00", {847, 44032}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000ac00", {847, 44032}, {2, 3}},
+     {L"\U0000034f\U0000ac01", {847, 44033}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000ac01", {847, 44033}, {2, 3}},
+     {L"\U0000034f\U0000231a", {847, 8986}, {1, 2}},
+     {L"\U0000034f\U00000308\U0000231a", {847, 8986}, {2, 3}},
+     {L"\U0000034f\U00000300", {847}, {2}},
+     {L"\U0000034f\U00000308\U00000300", {847}, {3}},
+     {L"\U0000034f\U0000200d", {847}, {2}},
+     {L"\U0000034f\U00000308\U0000200d", {847}, {3}},
+     {L"\U0000034f\U00000378", {847, 888}, {1, 2}},
+     {L"\U0000034f\U00000308\U00000378", {847, 888}, {2, 3}},
+     {L"\U0001f1e6\U00000020", {127462, 32}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U00000020", {127462, 32}, {2, 3}},
+     {L"\U0001f1e6\U0000000d", {127462, 13}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U0000000d", {127462, 13}, {2, 3}},
+     {L"\U0001f1e6\U0000000a", {127462, 10}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U0000000a", {127462, 10}, {2, 3}},
+     {L"\U0001f1e6\U00000001", {127462, 1}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U00000001", {127462, 1}, {2, 3}},
+     {L"\U0001f1e6\U0000034f", {127462}, {2}},
+     {L"\U0001f1e6\U00000308\U0000034f", {127462}, {3}},
+     {L"\U0001f1e6\U0001f1e6", {127462}, {2}},
+     {L"\U0001f1e6\U00000308\U0001f1e6", {127462, 127462}, {2, 3}},
+     {L"\U0001f1e6\U00000600", {127462, 1536}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U00000600", {127462, 1536}, {2, 3}},
+     {L"\U0001f1e6\U00000903", {127462}, {2}},
+     {L"\U0001f1e6\U00000308\U00000903", {127462}, {3}},
+     {L"\U0001f1e6\U00001100", {127462, 4352}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U00001100", {127462, 4352}, {2, 3}},
+     {L"\U0001f1e6\U00001160", {127462, 4448}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U00001160", {127462, 4448}, {2, 3}},
+     {L"\U0001f1e6\U000011a8", {127462, 4520}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U000011a8", {127462, 4520}, {2, 3}},
+     {L"\U0001f1e6\U0000ac00", {127462, 44032}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U0000ac00", {127462, 44032}, {2, 3}},
+     {L"\U0001f1e6\U0000ac01", {127462, 44033}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U0000ac01", {127462, 44033}, {2, 3}},
+     {L"\U0001f1e6\U0000231a", {127462, 8986}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U0000231a", {127462, 8986}, {2, 3}},
+     {L"\U0001f1e6\U00000300", {127462}, {2}},
+     {L"\U0001f1e6\U00000308\U00000300", {127462}, {3}},
+     {L"\U0001f1e6\U0000200d", {127462}, {2}},
+     {L"\U0001f1e6\U00000308\U0000200d", {127462}, {3}},
+     {L"\U0001f1e6\U00000378", {127462, 888}, {1, 2}},
+     {L"\U0001f1e6\U00000308\U00000378", {127462, 888}, {2, 3}},
+     {L"\U00000600\U00000020", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000020", {1536, 32}, {2, 3}},
+     {L"\U00000600\U0000000d", {1536, 13}, {1, 2}},
+     {L"\U00000600\U00000308\U0000000d", {1536, 13}, {2, 3}},
+     {L"\U00000600\U0000000a", {1536, 10}, {1, 2}},
+     {L"\U00000600\U00000308\U0000000a", {1536, 10}, {2, 3}},
+     {L"\U00000600\U00000001", {1536, 1}, {1, 2}},
+     {L"\U00000600\U00000308\U00000001", {1536, 1}, {2, 3}},
+     {L"\U00000600\U0000034f", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000034f", {1536}, {3}},
+     {L"\U00000600\U0001f1e6", {1536}, {2}},
+     {L"\U00000600\U00000308\U0001f1e6", {1536, 127462}, {2, 3}},
+     {L"\U00000600\U00000600", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000600", {1536, 1536}, {2, 3}},
+     {L"\U00000600\U00000903", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000903", {1536}, {3}},
+     {L"\U00000600\U00001100", {1536}, {2}},
+     {L"\U00000600\U00000308\U00001100", {1536, 4352}, {2, 3}},
+     {L"\U00000600\U00001160", {1536}, {2}},
+     {L"\U00000600\U00000308\U00001160", {1536, 4448}, {2, 3}},
+     {L"\U00000600\U000011a8", {1536}, {2}},
+     {L"\U00000600\U00000308\U000011a8", {1536, 4520}, {2, 3}},
+     {L"\U00000600\U0000ac00", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000ac00", {1536, 44032}, {2, 3}},
+     {L"\U00000600\U0000ac01", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000ac01", {1536, 44033}, {2, 3}},
+     {L"\U00000600\U0000231a", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000231a", {1536, 8986}, {2, 3}},
+     {L"\U00000600\U00000300", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000300", {1536}, {3}},
+     {L"\U00000600\U0000200d", {1536}, {2}},
+     {L"\U00000600\U00000308\U0000200d", {1536}, {3}},
+     {L"\U00000600\U00000378", {1536}, {2}},
+     {L"\U00000600\U00000308\U00000378", {1536, 888}, {2, 3}},
+     {L"\U00000903\U00000020", {2307, 32}, {1, 2}},
+     {L"\U00000903\U00000308\U00000020", {2307, 32}, {2, 3}},
+     {L"\U00000903\U0000000d", {2307, 13}, {1, 2}},
+     {L"\U00000903\U00000308\U0000000d", {2307, 13}, {2, 3}},
+     {L"\U00000903\U0000000a", {2307, 10}, {1, 2}},
+     {L"\U00000903\U00000308\U0000000a", {2307, 10}, {2, 3}},
+     {L"\U00000903\U00000001", {2307, 1}, {1, 2}},
+     {L"\U00000903\U00000308\U00000001", {2307, 1}, {2, 3}},
+     {L"\U00000903\U0000034f", {2307}, {2}},
+     {L"\U00000903\U00000308\U0000034f", {2307}, {3}},
+     {L"\U00000903\U0001f1e6", {2307, 127462}, {1, 2}},
+     {L"\U00000903\U00000308\U0001f1e6", {2307, 127462}, {2, 3}},
+     {L"\U00000903\U00000600", {2307, 1536}, {1, 2}},
+     {L"\U00000903\U00000308\U00000600", {2307, 1536}, {2, 3}},
+     {L"\U00000903\U00000903", {2307}, {2}},
+     {L"\U00000903\U00000308\U00000903", {2307}, {3}},
+     {L"\U00000903\U00001100", {2307, 4352}, {1, 2}},
+     {L"\U00000903\U00000308\U00001100", {2307, 4352}, {2, 3}},
+     {L"\U00000903\U00001160", {2307, 4448}, {1, 2}},
+     {L"\U00000903\U00000308\U00001160", {2307, 4448}, {2, 3}},
+     {L"\U00000903\U000011a8", {2307, 4520}, {1, 2}},
+     {L"\U00000903\U00000308\U000011a8", {2307, 4520}, {2, 3}},
+     {L"\U00000903\U0000ac00", {2307, 44032}, {1, 2}},
+     {L"\U00000903\U00000308\U0000ac00", {2307, 44032}, {2, 3}},
+     {L"\U00000903\U0000ac01", {2307, 44033}, {1, 2}},
+     {L"\U00000903\U00000308\U0000ac01", {2307, 44033}, {2, 3}},
+     {L"\U00000903\U0000231a", {2307, 8986}, {1, 2}},
+     {L"\U00000903\U00000308\U0000231a", {2307, 8986}, {2, 3}},
+     {L"\U00000903\U00000300", {2307}, {2}},
+     {L"\U00000903\U00000308\U00000300", {2307}, {3}},
+     {L"\U00000903\U0000200d", {2307}, {2}},
+     {L"\U00000903\U00000308\U0000200d", {2307}, {3}},
+     {L"\U00000903\U00000378", {2307, 888}, {1, 2}},
+     {L"\U00000903\U00000308\U00000378", {2307, 888}, {2, 3}},
+     {L"\U00001100\U00000020", {4352, 32}, {1, 2}},
+     {L"\U00001100\U00000308\U00000020", {4352, 32}, {2, 3}},
+     {L"\U00001100\U0000000d", {4352, 13}, {1, 2}},
+     {L"\U00001100\U00000308\U0000000d", {4352, 13}, {2, 3}},
+     {L"\U00001100\U0000000a", {4352, 10}, {1, 2}},
+     {L"\U00001100\U00000308\U0000000a", {4352, 10}, {2, 3}},
+     {L"\U00001100\U00000001", {4352, 1}, {1, 2}},
+     {L"\U00001100\U00000308\U00000001", {4352, 1}, {2, 3}},
+     {L"\U00001100\U0000034f", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000034f", {4352}, {3}},
+     {L"\U00001100\U0001f1e6", {4352, 127462}, {1, 2}},
+     {L"\U00001100\U00000308\U0001f1e6", {4352, 127462}, {2, 3}},
+     {L"\U00001100\U00000600", {4352, 1536}, {1, 2}},
+     {L"\U00001100\U00000308\U00000600", {4352, 1536}, {2, 3}},
+     {L"\U00001100\U00000903", {4352}, {2}},
+     {L"\U00001100\U00000308\U00000903", {4352}, {3}},
+     {L"\U00001100\U00001100", {4352}, {2}},
+     {L"\U00001100\U00000308\U00001100", {4352, 4352}, {2, 3}},
+     {L"\U00001100\U00001160", {4352}, {2}},
+     {L"\U00001100\U00000308\U00001160", {4352, 4448}, {2, 3}},
+     {L"\U00001100\U000011a8", {4352, 4520}, {1, 2}},
+     {L"\U00001100\U00000308\U000011a8", {4352, 4520}, {2, 3}},
+     {L"\U00001100\U0000ac00", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000ac00", {4352, 44032}, {2, 3}},
+     {L"\U00001100\U0000ac01", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000ac01", {4352, 44033}, {2, 3}},
+     {L"\U00001100\U0000231a", {4352, 8986}, {1, 2}},
+     {L"\U00001100\U00000308\U0000231a", {4352, 8986}, {2, 3}},
+     {L"\U00001100\U00000300", {4352}, {2}},
+     {L"\U00001100\U00000308\U00000300", {4352}, {3}},
+     {L"\U00001100\U0000200d", {4352}, {2}},
+     {L"\U00001100\U00000308\U0000200d", {4352}, {3}},
+     {L"\U00001100\U00000378", {4352, 888}, {1, 2}},
+     {L"\U00001100\U00000308\U00000378", {4352, 888}, {2, 3}},
+     {L"\U00001160\U00000020", {4448, 32}, {1, 2}},
+     {L"\U00001160\U00000308\U00000020", {4448, 32}, {2, 3}},
+     {L"\U00001160\U0000000d", {4448, 13}, {1, 2}},
+     {L"\U00001160\U00000308\U0000000d", {4448, 13}, {2, 3}},
+     {L"\U00001160\U0000000a", {4448, 10}, {1, 2}},
+     {L"\U00001160\U00000308\U0000000a", {4448, 10}, {2, 3}},
+     {L"\U00001160\U00000001", {4448, 1}, {1, 2}},
+     {L"\U00001160\U00000308\U00000001", {4448, 1}, {2, 3}},
+     {L"\U00001160\U0000034f", {4448}, {2}},
+     {L"\U00001160\U00000308\U0000034f", {4448}, {3}},
+     {L"\U00001160\U0001f1e6", {4448, 127462}, {1, 2}},
+     {L"\U00001160\U00000308\U0001f1e6", {4448, 127462}, {2, 3}},
+     {L"\U00001160\U00000600", {4448, 1536}, {1, 2}},
+     {L"\U00001160\U00000308\U00000600", {4448, 1536}, {2, 3}},
+     {L"\U00001160\U00000903", {4448}, {2}},
+     {L"\U00001160\U00000308\U00000903", {4448}, {3}},
+     {L"\U00001160\U00001100", {4448, 4352}, {1, 2}},
+     {L"\U00001160\U00000308\U00001100", {4448, 4352}, {2, 3}},
+     {L"\U00001160\U00001160", {4448}, {2}},
+     {L"\U00001160\U00000308\U00001160", {4448, 4448}, {2, 3}},
+     {L"\U00001160\U000011a8", {4448}, {2}},
+     {L"\U00001160\U00000308\U000011a8", {4448, 4520}, {2, 3}},
+     {L"\U00001160\U0000ac00", {4448, 44032}, {1, 2}},
+     {L"\U00001160\U00000308\U0000ac00", {4448, 44032}, {2, 3}},
+     {L"\U00001160\U0000ac01", {4448, 44033}, {1, 2}},
+     {L"\U00001160\U00000308\U0000ac01", {4448, 44033}, {2, 3}},
+     {L"\U00001160\U0000231a", {4448, 8986}, {1, 2}},
+     {L"\U00001160\U00000308\U0000231a", {4448, 8986}, {2, 3}},
+     {L"\U00001160\U00000300", {4448}, {2}},
+     {L"\U00001160\U00000308\U00000300", {4448}, {3}},
+     {L"\U00001160\U0000200d", {4448}, {2}},
+     {L"\U00001160\U00000308\U0000200d", {4448}, {3}},
+     {L"\U00001160\U00000378", {4448, 888}, {1, 2}},
+     {L"\U00001160\U00000308\U00000378", {4448, 888}, {2, 3}},
+     {L"\U000011a8\U00000020", {4520, 32}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000020", {4520, 32}, {2, 3}},
+     {L"\U000011a8\U0000000d", {4520, 13}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000000d", {4520, 13}, {2, 3}},
+     {L"\U000011a8\U0000000a", {4520, 10}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000000a", {4520, 10}, {2, 3}},
+     {L"\U000011a8\U00000001", {4520, 1}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000001", {4520, 1}, {2, 3}},
+     {L"\U000011a8\U0000034f", {4520}, {2}},
+     {L"\U000011a8\U00000308\U0000034f", {4520}, {3}},
+     {L"\U000011a8\U0001f1e6", {4520, 127462}, {1, 2}},
+     {L"\U000011a8\U00000308\U0001f1e6", {4520, 127462}, {2, 3}},
+     {L"\U000011a8\U00000600", {4520, 1536}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000600", {4520, 1536}, {2, 3}},
+     {L"\U000011a8\U00000903", {4520}, {2}},
+     {L"\U000011a8\U00000308\U00000903", {4520}, {3}},
+     {L"\U000011a8\U00001100", {4520, 4352}, {1, 2}},
+     {L"\U000011a8\U00000308\U00001100", {4520, 4352}, {2, 3}},
+     {L"\U000011a8\U00001160", {4520, 4448}, {1, 2}},
+     {L"\U000011a8\U00000308\U00001160", {4520, 4448}, {2, 3}},
+     {L"\U000011a8\U000011a8", {4520}, {2}},
+     {L"\U000011a8\U00000308\U000011a8", {4520, 4520}, {2, 3}},
+     {L"\U000011a8\U0000ac00", {4520, 44032}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000ac00", {4520, 44032}, {2, 3}},
+     {L"\U000011a8\U0000ac01", {4520, 44033}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000ac01", {4520, 44033}, {2, 3}},
+     {L"\U000011a8\U0000231a", {4520, 8986}, {1, 2}},
+     {L"\U000011a8\U00000308\U0000231a", {4520, 8986}, {2, 3}},
+     {L"\U000011a8\U00000300", {4520}, {2}},
+     {L"\U000011a8\U00000308\U00000300", {4520}, {3}},
+     {L"\U000011a8\U0000200d", {4520}, {2}},
+     {L"\U000011a8\U00000308\U0000200d", {4520}, {3}},
+     {L"\U000011a8\U00000378", {4520, 888}, {1, 2}},
+     {L"\U000011a8\U00000308\U00000378", {4520, 888}, {2, 3}},
+     {L"\U0000ac00\U00000020", {44032, 32}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000020", {44032, 32}, {2, 3}},
+     {L"\U0000ac00\U0000000d", {44032, 13}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000000d", {44032, 13}, {2, 3}},
+     {L"\U0000ac00\U0000000a", {44032, 10}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000000a", {44032, 10}, {2, 3}},
+     {L"\U0000ac00\U00000001", {44032, 1}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000001", {44032, 1}, {2, 3}},
+     {L"\U0000ac00\U0000034f", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U0000034f", {44032}, {3}},
+     {L"\U0000ac00\U0001f1e6", {44032, 127462}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0001f1e6", {44032, 127462}, {2, 3}},
+     {L"\U0000ac00\U00000600", {44032, 1536}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000600", {44032, 1536}, {2, 3}},
+     {L"\U0000ac00\U00000903", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U00000903", {44032}, {3}},
+     {L"\U0000ac00\U00001100", {44032, 4352}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00001100", {44032, 4352}, {2, 3}},
+     {L"\U0000ac00\U00001160", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U00001160", {44032, 4448}, {2, 3}},
+     {L"\U0000ac00\U000011a8", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U000011a8", {44032, 4520}, {2, 3}},
+     {L"\U0000ac00\U0000ac00", {44032, 44032}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000ac00", {44032, 44032}, {2, 3}},
+     {L"\U0000ac00\U0000ac01", {44032, 44033}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000ac01", {44032, 44033}, {2, 3}},
+     {L"\U0000ac00\U0000231a", {44032, 8986}, {1, 2}},
+     {L"\U0000ac00\U00000308\U0000231a", {44032, 8986}, {2, 3}},
+     {L"\U0000ac00\U00000300", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U00000300", {44032}, {3}},
+     {L"\U0000ac00\U0000200d", {44032}, {2}},
+     {L"\U0000ac00\U00000308\U0000200d", {44032}, {3}},
+     {L"\U0000ac00\U00000378", {44032, 888}, {1, 2}},
+     {L"\U0000ac00\U00000308\U00000378", {44032, 888}, {2, 3}},
+     {L"\U0000ac01\U00000020", {44033, 32}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000020", {44033, 32}, {2, 3}},
+     {L"\U0000ac01\U0000000d", {44033, 13}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000000d", {44033, 13}, {2, 3}},
+     {L"\U0000ac01\U0000000a", {44033, 10}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000000a", {44033, 10}, {2, 3}},
+     {L"\U0000ac01\U00000001", {44033, 1}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000001", {44033, 1}, {2, 3}},
+     {L"\U0000ac01\U0000034f", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U0000034f", {44033}, {3}},
+     {L"\U0000ac01\U0001f1e6", {44033, 127462}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0001f1e6", {44033, 127462}, {2, 3}},
+     {L"\U0000ac01\U00000600", {44033, 1536}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000600", {44033, 1536}, {2, 3}},
+     {L"\U0000ac01\U00000903", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U00000903", {44033}, {3}},
+     {L"\U0000ac01\U00001100", {44033, 4352}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00001100", {44033, 4352}, {2, 3}},
+     {L"\U0000ac01\U00001160", {44033, 4448}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00001160", {44033, 4448}, {2, 3}},
+     {L"\U0000ac01\U000011a8", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U000011a8", {44033, 4520}, {2, 3}},
+     {L"\U0000ac01\U0000ac00", {44033, 44032}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000ac00", {44033, 44032}, {2, 3}},
+     {L"\U0000ac01\U0000ac01", {44033, 44033}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000ac01", {44033, 44033}, {2, 3}},
+     {L"\U0000ac01\U0000231a", {44033, 8986}, {1, 2}},
+     {L"\U0000ac01\U00000308\U0000231a", {44033, 8986}, {2, 3}},
+     {L"\U0000ac01\U00000300", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U00000300", {44033}, {3}},
+     {L"\U0000ac01\U0000200d", {44033}, {2}},
+     {L"\U0000ac01\U00000308\U0000200d", {44033}, {3}},
+     {L"\U0000ac01\U00000378", {44033, 888}, {1, 2}},
+     {L"\U0000ac01\U00000308\U00000378", {44033, 888}, {2, 3}},
+     {L"\U0000231a\U00000020", {8986, 32}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000020", {8986, 32}, {2, 3}},
+     {L"\U0000231a\U0000000d", {8986, 13}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000000d", {8986, 13}, {2, 3}},
+     {L"\U0000231a\U0000000a", {8986, 10}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000000a", {8986, 10}, {2, 3}},
+     {L"\U0000231a\U00000001", {8986, 1}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000001", {8986, 1}, {2, 3}},
+     {L"\U0000231a\U0000034f", {8986}, {2}},
+     {L"\U0000231a\U00000308\U0000034f", {8986}, {3}},
+     {L"\U0000231a\U0001f1e6", {8986, 127462}, {1, 2}},
+     {L"\U0000231a\U00000308\U0001f1e6", {8986, 127462}, {2, 3}},
+     {L"\U0000231a\U00000600", {8986, 1536}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000600", {8986, 1536}, {2, 3}},
+     {L"\U0000231a\U00000903", {8986}, {2}},
+     {L"\U0000231a\U00000308\U00000903", {8986}, {3}},
+     {L"\U0000231a\U00001100", {8986, 4352}, {1, 2}},
+     {L"\U0000231a\U00000308\U00001100", {8986, 4352}, {2, 3}},
+     {L"\U0000231a\U00001160", {8986, 4448}, {1, 2}},
+     {L"\U0000231a\U00000308\U00001160", {8986, 4448}, {2, 3}},
+     {L"\U0000231a\U000011a8", {8986, 4520}, {1, 2}},
+     {L"\U0000231a\U00000308\U000011a8", {8986, 4520}, {2, 3}},
+     {L"\U0000231a\U0000ac00", {8986, 44032}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000ac00", {8986, 44032}, {2, 3}},
+     {L"\U0000231a\U0000ac01", {8986, 44033}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000ac01", {8986, 44033}, {2, 3}},
+     {L"\U0000231a\U0000231a", {8986, 8986}, {1, 2}},
+     {L"\U0000231a\U00000308\U0000231a", {8986, 8986}, {2, 3}},
+     {L"\U0000231a\U00000300", {8986}, {2}},
+     {L"\U0000231a\U00000308\U00000300", {8986}, {3}},
+     {L"\U0000231a\U0000200d", {8986}, {2}},
+     {L"\U0000231a\U00000308\U0000200d", {8986}, {3}},
+     {L"\U0000231a\U00000378", {8986, 888}, {1, 2}},
+     {L"\U0000231a\U00000308\U00000378", {8986, 888}, {2, 3}},
+     {L"\U00000300\U00000020", {768, 32}, {1, 2}},
+     {L"\U00000300\U00000308\U00000020", {768, 32}, {2, 3}},
+     {L"\U00000300\U0000000d", {768, 13}, {1, 2}},
+     {L"\U00000300\U00000308\U0000000d", {768, 13}, {2, 3}},
+     {L"\U00000300\U0000000a", {768, 10}, {1, 2}},
+     {L"\U00000300\U00000308\U0000000a", {768, 10}, {2, 3}},
+     {L"\U00000300\U00000001", {768, 1}, {1, 2}},
+     {L"\U00000300\U00000308\U00000001", {768, 1}, {2, 3}},
+     {L"\U00000300\U0000034f", {768}, {2}},
+     {L"\U00000300\U00000308\U0000034f", {768}, {3}},
+     {L"\U00000300\U0001f1e6", {768, 127462}, {1, 2}},
+     {L"\U00000300\U00000308\U0001f1e6", {768, 127462}, {2, 3}},
+     {L"\U00000300\U00000600", {768, 1536}, {1, 2}},
+     {L"\U00000300\U00000308\U00000600", {768, 1536}, {2, 3}},
+     {L"\U00000300\U00000903", {768}, {2}},
+     {L"\U00000300\U00000308\U00000903", {768}, {3}},
+     {L"\U00000300\U00001100", {768, 4352}, {1, 2}},
+     {L"\U00000300\U00000308\U00001100", {768, 4352}, {2, 3}},
+     {L"\U00000300\U00001160", {768, 4448}, {1, 2}},
+     {L"\U00000300\U00000308\U00001160", {768, 4448}, {2, 3}},
+     {L"\U00000300\U000011a8", {768, 4520}, {1, 2}},
+     {L"\U00000300\U00000308\U000011a8", {768, 4520}, {2, 3}},
+     {L"\U00000300\U0000ac00", {768, 44032}, {1, 2}},
+     {L"\U00000300\U00000308\U0000ac00", {768, 44032}, {2, 3}},
+     {L"\U00000300\U0000ac01", {768, 44033}, {1, 2}},
+     {L"\U00000300\U00000308\U0000ac01", {768, 44033}, {2, 3}},
+     {L"\U00000300\U0000231a", {768, 8986}, {1, 2}},
+     {L"\U00000300\U00000308\U0000231a", {768, 8986}, {2, 3}},
+     {L"\U00000300\U00000300", {768}, {2}},
+     {L"\U00000300\U00000308\U00000300", {768}, {3}},
+     {L"\U00000300\U0000200d", {768}, {2}},
+     {L"\U00000300\U00000308\U0000200d", {768}, {3}},
+     {L"\U00000300\U00000378", {768, 888}, {1, 2}},
+     {L"\U00000300\U00000308\U00000378", {768, 888}, {2, 3}},
+     {L"\U0000200d\U00000020", {8205, 32}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000020", {8205, 32}, {2, 3}},
+     {L"\U0000200d\U0000000d", {8205, 13}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000000d", {8205, 13}, {2, 3}},
+     {L"\U0000200d\U0000000a", {8205, 10}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000000a", {8205, 10}, {2, 3}},
+     {L"\U0000200d\U00000001", {8205, 1}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000001", {8205, 1}, {2, 3}},
+     {L"\U0000200d\U0000034f", {8205}, {2}},
+     {L"\U0000200d\U00000308\U0000034f", {8205}, {3}},
+     {L"\U0000200d\U0001f1e6", {8205, 127462}, {1, 2}},
+     {L"\U0000200d\U00000308\U0001f1e6", {8205, 127462}, {2, 3}},
+     {L"\U0000200d\U00000600", {8205, 1536}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000600", {8205, 1536}, {2, 3}},
+     {L"\U0000200d\U00000903", {8205}, {2}},
+     {L"\U0000200d\U00000308\U00000903", {8205}, {3}},
+     {L"\U0000200d\U00001100", {8205, 4352}, {1, 2}},
+     {L"\U0000200d\U00000308\U00001100", {8205, 4352}, {2, 3}},
+     {L"\U0000200d\U00001160", {8205, 4448}, {1, 2}},
+     {L"\U0000200d\U00000308\U00001160", {8205, 4448}, {2, 3}},
+     {L"\U0000200d\U000011a8", {8205, 4520}, {1, 2}},
+     {L"\U0000200d\U00000308\U000011a8", {8205, 4520}, {2, 3}},
+     {L"\U0000200d\U0000ac00", {8205, 44032}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000ac00", {8205, 44032}, {2, 3}},
+     {L"\U0000200d\U0000ac01", {8205, 44033}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000ac01", {8205, 44033}, {2, 3}},
+     {L"\U0000200d\U0000231a", {8205, 8986}, {1, 2}},
+     {L"\U0000200d\U00000308\U0000231a", {8205, 8986}, {2, 3}},
+     {L"\U0000200d\U00000300", {8205}, {2}},
+     {L"\U0000200d\U00000308\U00000300", {8205}, {3}},
+     {L"\U0000200d\U0000200d", {8205}, {2}},
+     {L"\U0000200d\U00000308\U0000200d", {8205}, {3}},
+     {L"\U0000200d\U00000378", {8205, 888}, {1, 2}},
+     {L"\U0000200d\U00000308\U00000378", {8205, 888}, {2, 3}},
+     {L"\U00000378\U00000020", {888, 32}, {1, 2}},
+     {L"\U00000378\U00000308\U00000020", {888, 32}, {2, 3}},
+     {L"\U00000378\U0000000d", {888, 13}, {1, 2}},
+     {L"\U00000378\U00000308\U0000000d", {888, 13}, {2, 3}},
+     {L"\U00000378\U0000000a", {888, 10}, {1, 2}},
+     {L"\U00000378\U00000308\U0000000a", {888, 10}, {2, 3}},
+     {L"\U00000378\U00000001", {888, 1}, {1, 2}},
+     {L"\U00000378\U00000308\U00000001", {888, 1}, {2, 3}},
+     {L"\U00000378\U0000034f", {888}, {2}},
+     {L"\U00000378\U00000308\U0000034f", {888}, {3}},
+     {L"\U00000378\U0001f1e6", {888, 127462}, {1, 2}},
+     {L"\U00000378\U00000308\U0001f1e6", {888, 127462}, {2, 3}},
+     {L"\U00000378\U00000600", {888, 1536}, {1, 2}},
+     {L"\U00000378\U00000308\U00000600", {888, 1536}, {2, 3}},
+     {L"\U00000378\U00000903", {888}, {2}},
+     {L"\U00000378\U00000308\U00000903", {888}, {3}},
+     {L"\U00000378\U00001100", {888, 4352}, {1, 2}},
+     {L"\U00000378\U00000308\U00001100", {888, 4352}, {2, 3}},
+     {L"\U00000378\U00001160", {888, 4448}, {1, 2}},
+     {L"\U00000378\U00000308\U00001160", {888, 4448}, {2, 3}},
+     {L"\U00000378\U000011a8", {888, 4520}, {1, 2}},
+     {L"\U00000378\U00000308\U000011a8", {888, 4520}, {2, 3}},
+     {L"\U00000378\U0000ac00", {888, 44032}, {1, 2}},
+     {L"\U00000378\U00000308\U0000ac00", {888, 44032}, {2, 3}},
+     {L"\U00000378\U0000ac01", {888, 44033}, {1, 2}},
+     {L"\U00000378\U00000308\U0000ac01", {888, 44033}, {2, 3}},
+     {L"\U00000378\U0000231a", {888, 8986}, {1, 2}},
+     {L"\U00000378\U00000308\U0000231a", {888, 8986}, {2, 3}},
+     {L"\U00000378\U00000300", {888}, {2}},
+     {L"\U00000378\U00000308\U00000300", {888}, {3}},
+     {L"\U00000378\U0000200d", {888}, {2}},
+     {L"\U00000378\U00000308\U0000200d", {888}, {3}},
+     {L"\U00000378\U00000378", {888, 888}, {1, 2}},
+     {L"\U00000378\U00000308\U00000378", {888, 888}, {2, 3}},
+     {L"\U0000000d\U0000000a\U00000061\U0000000a\U00000308", {13, 97, 10, 776}, {2, 3, 4, 5}},
+     {L"\U00000061\U00000308", {97}, {2}},
+     {L"\U00000020\U0000200d\U00000646", {32, 1606}, {2, 3}},
+     {L"\U00000646\U0000200d\U00000020", {1606, 32}, {2, 3}},
+     {L"\U00001100\U00001100", {4352}, {2}},
+     {L"\U0000ac00\U000011a8\U00001100", {44032, 4352}, {2, 3}},
+     {L"\U0000ac01\U000011a8\U00001100", {44033, 4352}, {2, 3}},
+     {L"\U0001f1e6\U0001f1e7\U0001f1e8\U00000062", {127462, 127464, 98}, {2, 3, 4}},
+     {L"\U00000061\U0001f1e6\U0001f1e7\U0001f1e8\U00000062", {97, 127462, 127464, 98}, {1, 3, 4, 5}},
+     {L"\U00000061\U0001f1e6\U0001f1e7\U0000200d\U0001f1e8\U00000062", {97, 127462, 127464, 98}, {1, 4, 5, 6}},
+     {L"\U00000061\U0001f1e6\U0000200d\U0001f1e7\U0001f1e8\U00000062", {97, 127462, 127463, 98}, {1, 3, 5, 6}},
+     {L"\U00000061\U0001f1e6\U0001f1e7\U0001f1e8\U0001f1e9\U00000062", {97, 127462, 127464, 98}, {1, 3, 5, 6}},
+     {L"\U00000061\U0000200d", {97}, {2}},
+     {L"\U00000061\U00000308\U00000062", {97, 98}, {2, 3}},
+     {L"\U00000061\U00000903\U00000062", {97, 98}, {2, 3}},
+     {L"\U00000061\U00000600\U00000062", {97, 1536}, {1, 3}},
+     {L"\U0001f476\U0001f3ff\U0001f476", {128118, 128118}, {2, 3}},
+     {L"\U00000061\U0001f3ff\U0001f476", {97, 128118}, {2, 3}},
+     {L"\U00000061\U0001f3ff\U0001f476\U0000200d\U0001f6d1", {97, 128118}, {2, 5}},
+     {L"\U0001f476\U0001f3ff\U00000308\U0000200d\U0001f476\U0001f3ff", {128118}, {6}},
+     {L"\U0001f6d1\U0000200d\U0001f6d1", {128721}, {3}},
+     {L"\U00000061\U0000200d\U0001f6d1", {97, 128721}, {2, 3}},
+     {L"\U00002701\U0000200d\U00002701", {9985}, {3}},
+     {L"\U00000061\U0000200d\U00002701", {97, 9985}, {2, 3}}}};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+#endif // LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_EXTENDED_GRAPHEME_CLUSTER_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.pass.cpp
new file mode 100644
index 0000000..0592c08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// Tests the implementation of the extended grapheme cluster boundaries per
+// https://www.unicode.org/reports/tr29/#Grapheme_Cluster_Boundary_Rules
+//
+// The tests are based on the test data provided by Unicode
+// https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakTest.txt
+
+#include <cassert>
+#include <format>
+#include <functional>
+#include <numeric>
+
+#include "extended_grapheme_cluster.h"
+
+// Validates whether the number of code points in our "database" matches with
+// the number in the Unicode. The assumption is when the number of items per
+// property matches the code points themselves also match.
+namespace {
+namespace cluster = std::__extended_grapheme_custer_property_boundary;
+constexpr int count_entries(cluster::__property property) {
+  return std::transform_reduce(
+      std::begin(cluster::__entries), std::end(cluster::__entries), 0, std::plus{}, [property](auto entry) {
+        if (static_cast<cluster::__property>(entry & 0xf) != property)
+          return 0;
+
+        return 1 + static_cast<int>((entry >> 4) & 0x7f);
+      });
+}
+
+static_assert(count_entries(cluster::__property::__Prepend) == 27);
+static_assert(count_entries(cluster::__property::__CR) == 1);
+static_assert(count_entries(cluster::__property::__LF) == 1);
+static_assert(count_entries(cluster::__property::__Control) == 3893);
+static_assert(count_entries(cluster::__property::__Extend) == 2130);
+static_assert(count_entries(cluster::__property::__Regional_Indicator) == 26);
+static_assert(count_entries(cluster::__property::__SpacingMark) == 395);
+static_assert(count_entries(cluster::__property::__L) == 125);
+static_assert(count_entries(cluster::__property::__V) == 95);
+static_assert(count_entries(cluster::__property::__T) == 137);
+static_assert(count_entries(cluster::__property::__LV) == 399);
+static_assert(count_entries(cluster::__property::__LVT) == 10773);
+static_assert(count_entries(cluster::__property::__ZWJ) == 1);
+static_assert(count_entries(cluster::__property::__Extended_Pictographic) == 3537);
+
+} // namespace
+
+template <class Data>
+constexpr void test(const Data& data) {
+  for (const auto& d : data) {
+    assert(d.code_points.size() == d.breaks.size());
+
+    std::__unicode::__extended_grapheme_cluster_view view{d.input.data(), d.input.data() + d.input.size()};
+    for (size_t i = 0; i < d.breaks.size(); ++i) {
+      auto r = view.__consume();
+      assert(r.__code_point_ == d.code_points[i]);
+      assert(r.__last_ == d.input.data() + d.breaks[i]);
+    }
+  }
+}
+
+constexpr bool test() {
+  test(data_utf8);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  if constexpr (sizeof(wchar_t) == 2)
+    test(data_utf16);
+  else
+    test(data_utf32);
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  // static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/test_exception.h b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/test_exception.h
new file mode 100644
index 0000000..80e45c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/format.string/format.string.std/test_exception.h
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_TEST_EXCEPTION_H
+#define _LIBCPP_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_TEST_EXCEPTION_H
+
+#include <format>
+#include <string_view>
+
+namespace detail {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <class Parser, class CharT>
+void test_exception(std::string_view what, const CharT* fmt) {
+  try {
+    std::basic_format_parse_context<CharT> parse_ctx(fmt);
+    (void)Parser{}.parse(parse_ctx);
+    assert(false);
+  } catch (std::format_error& e) {
+    LIBCPP_ASSERT(e.what() == what);
+    return;
+  }
+
+  assert(false);
+}
+#endif
+} // namespace detail
+
+/**
+ *  Wrapper for the exception tests.
+ *
+ *  When using the real function directly during in a constexpr test and add
+ *  the `std::is_constant_evaluated()` test there the compilation fails. This
+ *  happens since assert calls the non-constexpr function '__assert_fail'.
+ *  Solve this issue with an layer of indirection.
+ */
+template <class Parser, class CharT>
+constexpr void test_exception(std::string_view what, const CharT* fmt) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!std::is_constant_evaluated())
+    detail::test_exception<Parser>(what, fmt);
+#else
+  (void)what;
+  (void)fmt;
+#endif
+}
+
+#endif // _LIBCPP_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_TEST_EXCEPTION_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/format/version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/version.compile.pass.cpp
new file mode 100644
index 0000000..4c1be77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/format/version.compile.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+#include <format>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#  error _LIBCPP_VERSION not defined
+#endif
+
+// Required for MSVC internal test runner compatibility.
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/abi_bug_cxx03_cxx11_example.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/abi_bug_cxx03_cxx11_example.sh.cpp
new file mode 100644
index 0000000..11384d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/abi_bug_cxx03_cxx11_example.sh.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: clang || apple-clang
+// XFAIL: *
+
+// This tests is meant to demonstrate an existing ABI bug between the
+// C++03 and C++11 implementations of std::function. It is not a real test.
+
+// RUN: %{cxx} -c %s -o %t.first.o %{flags} %{compile_flags} -std=c++03 -g
+// RUN: %{cxx} -c %s -o %t.second.o -DWITH_MAIN %{flags} %{compile_flags} -g -std=c++11
+// RUN: %{cxx} -o %t.exe %t.first.o %t.second.o %{flags} %{link_flags} -g
+// RUN: %{run}
+
+#include <functional>
+#include <cassert>
+
+typedef std::function<void(int)> Func;
+
+Func CreateFunc();
+
+#ifndef WITH_MAIN
+// In C++03, the functions call operator, which is a part of the vtable,
+// is defined as 'void operator()(int)', but in C++11 it's
+// void operator()(int&&)'. So when the C++03 version is passed to C++11 code
+// the value of the integer is interpreted as its address.
+void test(int x) {
+  assert(x == 42);
+}
+Func CreateFunc() {
+  Func f(&test);
+  return f;
+}
+#else
+int main(int, char**) {
+  Func f = CreateFunc();
+  f(42);
+  return 0;
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.bind.partial/bind_back.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.bind.partial/bind_back.pass.cpp
new file mode 100644
index 0000000..de7d78f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.bind.partial/bind_back.pass.cpp
@@ -0,0 +1,416 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// functional
+
+// template <class F, class... Args>
+// constexpr unspecified __bind_back(F&&, Args&&...);
+
+// This isn't part of the standard, however we use it internally and there is a
+// chance that it will be added to the standard, so we implement those tests
+// as-if it were part of the spec.
+
+#include <functional>
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "callable_types.h"
+#include "test_macros.h"
+
+struct CopyMoveInfo {
+  enum { none, copy, move } copy_kind;
+
+  constexpr CopyMoveInfo() : copy_kind(none) {}
+  constexpr CopyMoveInfo(CopyMoveInfo const&) : copy_kind(copy) {}
+  constexpr CopyMoveInfo(CopyMoveInfo&&) : copy_kind(move) {}
+};
+
+template <class ...Args>
+struct is_bind_backable {
+  template <class ...LocalArgs>
+  static auto test(int)
+      -> decltype((void)std::__bind_back(std::declval<LocalArgs>()...), std::true_type());
+
+  template <class...>
+  static std::false_type test(...);
+
+  static constexpr bool value = decltype(test<Args...>(0))::value;
+};
+
+struct NotCopyMove {
+  NotCopyMove() = delete;
+  NotCopyMove(const NotCopyMove&) = delete;
+  NotCopyMove(NotCopyMove&&) = delete;
+  template <class ...Args>
+  void operator()(Args&& ...) const { }
+};
+
+struct NonConstCopyConstructible {
+  explicit NonConstCopyConstructible() {}
+  NonConstCopyConstructible(NonConstCopyConstructible&) {}
+};
+
+struct MoveConstructible {
+  explicit MoveConstructible() {}
+  MoveConstructible(MoveConstructible&&) {}
+};
+
+struct MakeTuple {
+  template <class ...Args>
+  constexpr auto operator()(Args&& ...args) const {
+    return std::make_tuple(std::forward<Args>(args)...);
+  }
+};
+
+template <int X>
+struct Elem {
+  template <int Y>
+  constexpr bool operator==(Elem<Y> const&) const
+  { return X == Y; }
+};
+
+constexpr bool test() {
+  // Bind arguments, call without arguments
+  {
+    {
+      auto f = std::__bind_back(MakeTuple{});
+      assert(f() == std::make_tuple());
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{});
+      assert(f() == std::make_tuple(Elem<1>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{}, Elem<2>{});
+      assert(f() == std::make_tuple(Elem<1>{}, Elem<2>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{}, Elem<2>{}, Elem<3>{});
+      assert(f() == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<3>{}));
+    }
+  }
+
+  // Bind no arguments, call with arguments
+  {
+    {
+      auto f = std::__bind_back(MakeTuple{});
+      assert(f(Elem<1>{}) == std::make_tuple(Elem<1>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{});
+      assert(f(Elem<1>{}, Elem<2>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{});
+      assert(f(Elem<1>{}, Elem<2>{}, Elem<3>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<3>{}));
+    }
+  }
+
+  // Bind arguments, call with arguments
+  {
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{});
+      assert(f(Elem<10>{}) == std::make_tuple(Elem<10>{}, Elem<1>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{}, Elem<2>{});
+      assert(f(Elem<10>{}) == std::make_tuple(Elem<10>{}, Elem<1>{}, Elem<2>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{}, Elem<2>{}, Elem<3>{});
+      assert(f(Elem<10>{}) == std::make_tuple(Elem<10>{}, Elem<1>{}, Elem<2>{}, Elem<3>{}));
+    }
+
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{});
+      assert(f(Elem<10>{}, Elem<11>{}) == std::make_tuple(Elem<10>{}, Elem<11>{}, Elem<1>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{}, Elem<2>{});
+      assert(f(Elem<10>{}, Elem<11>{}) == std::make_tuple(Elem<10>{}, Elem<11>{}, Elem<1>{}, Elem<2>{}));
+    }
+    {
+      auto f = std::__bind_back(MakeTuple{}, Elem<1>{}, Elem<2>{}, Elem<3>{});
+      assert(f(Elem<10>{}, Elem<11>{}) == std::make_tuple(Elem<10>{}, Elem<11>{}, Elem<1>{}, Elem<2>{}, Elem<3>{}));
+    }
+  }
+
+  // Basic tests with fundamental types
+  {
+    int n = 2;
+    int m = 1;
+    auto add = [](int x, int y) { return x + y; };
+    auto addN = [](int a, int b, int c, int d, int e, int f) {
+      return a + b + c + d + e + f;
+    };
+
+    auto a = std::__bind_back(add, m, n);
+    assert(a() == 3);
+
+    auto b = std::__bind_back(addN, m, n, m, m, m, m);
+    assert(b() == 7);
+
+    auto c = std::__bind_back(addN, n, m);
+    assert(c(1, 1, 1, 1) == 7);
+
+    auto f = std::__bind_back(add, n);
+    assert(f(3) == 5);
+
+    auto g = std::__bind_back(add, n, 1);
+    assert(g() == 3);
+
+    auto h = std::__bind_back(addN, 1, 1, 1);
+    assert(h(2, 2, 2) == 9);
+  }
+
+  // Make sure we don't treat std::reference_wrapper specially.
+  {
+    auto sub = [](std::reference_wrapper<int> a, std::reference_wrapper<int> b) {
+      return a.get() - b.get();
+    };
+    int i = 1, j = 2;
+    auto f = std::__bind_back(sub, std::ref(i));
+    assert(f(std::ref(j)) == 2 - 1);
+  }
+
+  // Make sure we can call a function that's a pointer to a member function.
+  {
+    struct MemberFunction {
+      constexpr bool foo(int, int) { return true; }
+    };
+    MemberFunction value;
+    auto fn = std::__bind_back(&MemberFunction::foo, 0, 0);
+    assert(fn(value));
+  }
+
+  // Make sure that we copy the bound arguments into the unspecified-type.
+  {
+    auto add = [](int x, int y) { return x + y; };
+    int n = 2;
+    auto i = std::__bind_back(add, n, 1);
+    n = 100;
+    assert(i() == 3);
+  }
+
+  // Make sure we pass the bound arguments to the function object
+  // with the right value category.
+  {
+    {
+      auto wasCopied = [](CopyMoveInfo info) {
+        return info.copy_kind == CopyMoveInfo::copy;
+      };
+      CopyMoveInfo info;
+      auto copied = std::__bind_back(wasCopied, info);
+      assert(copied());
+    }
+
+    {
+      auto wasMoved = [](CopyMoveInfo info) {
+        return info.copy_kind == CopyMoveInfo::move;
+      };
+      CopyMoveInfo info;
+      auto moved = std::__bind_back(wasMoved, info);
+      assert(std::move(moved)());
+    }
+  }
+
+  // Make sure we call the correctly cv-ref qualified operator() based on the
+  // value category of the __bind_back unspecified-type.
+  {
+    struct F {
+      constexpr int operator()() & { return 1; }
+      constexpr int operator()() const& { return 2; }
+      constexpr int operator()() && { return 3; }
+      constexpr int operator()() const&& { return 4; }
+    };
+    auto x = std::__bind_back(F{});
+    using X = decltype(x);
+    assert(static_cast<X&>(x)() == 1);
+    assert(static_cast<X const&>(x)() == 2);
+    assert(static_cast<X&&>(x)() == 3);
+    assert(static_cast<X const&&>(x)() == 4);
+  }
+
+  // Make sure the __bind_back unspecified-type is NOT invocable when the call would select a
+  // differently-qualified operator().
+  //
+  // For example, if the call to `operator()() &` is ill-formed, the call to the unspecified-type
+  // should be ill-formed and not fall back to the `operator()() const&` overload.
+  {
+    // Make sure we delete the & overload when the underlying call isn't valid
+    {
+      struct F {
+        void operator()() & = delete;
+        void operator()() const&;
+        void operator()() &&;
+        void operator()() const&&;
+      };
+      using X = decltype(std::__bind_back(F{}));
+      static_assert(!std::is_invocable_v<X&>);
+      static_assert( std::is_invocable_v<X const&>);
+      static_assert( std::is_invocable_v<X>);
+      static_assert( std::is_invocable_v<X const>);
+    }
+
+    // There's no way to make sure we delete the const& overload when the underlying call isn't valid,
+    // so we can't check this one.
+
+    // Make sure we delete the && overload when the underlying call isn't valid
+    {
+      struct F {
+        void operator()() &;
+        void operator()() const&;
+        void operator()() && = delete;
+        void operator()() const&&;
+      };
+      using X = decltype(std::__bind_back(F{}));
+      static_assert( std::is_invocable_v<X&>);
+      static_assert( std::is_invocable_v<X const&>);
+      static_assert(!std::is_invocable_v<X>);
+      static_assert( std::is_invocable_v<X const>);
+    }
+
+    // Make sure we delete the const&& overload when the underlying call isn't valid
+    {
+      struct F {
+        void operator()() &;
+        void operator()() const&;
+        void operator()() &&;
+        void operator()() const&& = delete;
+      };
+      using X = decltype(std::__bind_back(F{}));
+      static_assert( std::is_invocable_v<X&>);
+      static_assert( std::is_invocable_v<X const&>);
+      static_assert( std::is_invocable_v<X>);
+      static_assert(!std::is_invocable_v<X const>);
+    }
+  }
+
+  // Some examples by Tim Song
+  {
+    {
+      struct T { };
+      struct F {
+        void operator()(T&&) const &;
+        void operator()(T&&) && = delete;
+      };
+      using X = decltype(std::__bind_back(F{}));
+      static_assert(!std::is_invocable_v<X, T>);
+    }
+
+    {
+      struct T { };
+      struct F {
+        void operator()(T const&) const;
+        void operator()(T&&) const = delete;
+      };
+      using X = decltype(std::__bind_back(F{}, T{}));
+      static_assert(!std::is_invocable_v<X>);
+    }
+  }
+
+  // Test properties of the constructor of the unspecified-type returned by __bind_back.
+  {
+    {
+      MoveOnlyCallable<bool> value(true);
+      auto ret = std::__bind_back(std::move(value), 1);
+      assert(ret());
+      assert(ret(1, 2, 3));
+
+      auto ret1 = std::move(ret);
+      assert(!ret());
+      assert(ret1());
+      assert(ret1(1, 2, 3));
+
+      using RetT = decltype(ret);
+      static_assert( std::is_move_constructible<RetT>::value);
+      static_assert(!std::is_copy_constructible<RetT>::value);
+      static_assert(!std::is_move_assignable<RetT>::value);
+      static_assert(!std::is_copy_assignable<RetT>::value);
+    }
+    {
+      CopyCallable<bool> value(true);
+      auto ret = std::__bind_back(value, 1);
+      assert(ret());
+      assert(ret(1, 2, 3));
+
+      auto ret1 = std::move(ret);
+      assert(ret1());
+      assert(ret1(1, 2, 3));
+
+      auto ret2 = std::__bind_back(std::move(value), 1);
+      assert(!ret());
+      assert(ret2());
+      assert(ret2(1, 2, 3));
+
+      using RetT = decltype(ret);
+      static_assert( std::is_move_constructible<RetT>::value);
+      static_assert( std::is_copy_constructible<RetT>::value);
+      static_assert(!std::is_move_assignable<RetT>::value);
+      static_assert(!std::is_copy_assignable<RetT>::value);
+    }
+    {
+      CopyAssignableWrapper value(true);
+      using RetT = decltype(std::__bind_back(value, 1));
+
+      static_assert(std::is_move_constructible<RetT>::value);
+      static_assert(std::is_copy_constructible<RetT>::value);
+      static_assert(std::is_move_assignable<RetT>::value);
+      static_assert(std::is_copy_assignable<RetT>::value);
+    }
+    {
+      MoveAssignableWrapper value(true);
+      using RetT = decltype(std::__bind_back(std::move(value), 1));
+
+      static_assert( std::is_move_constructible<RetT>::value);
+      static_assert(!std::is_copy_constructible<RetT>::value);
+      static_assert( std::is_move_assignable<RetT>::value);
+      static_assert(!std::is_copy_assignable<RetT>::value);
+    }
+  }
+
+  // Make sure __bind_back is SFINAE friendly
+  {
+    static_assert(!std::is_constructible_v<NotCopyMove, NotCopyMove&>);
+    static_assert(!std::is_move_constructible_v<NotCopyMove>);
+    static_assert(!is_bind_backable<NotCopyMove>::value);
+    static_assert(!is_bind_backable<NotCopyMove&>::value);
+
+    auto takeAnything = [](auto&& ...) { };
+    static_assert(!std::is_constructible_v<MoveConstructible, MoveConstructible&>);
+    static_assert( std::is_move_constructible_v<MoveConstructible>);
+    static_assert( is_bind_backable<decltype(takeAnything), MoveConstructible>::value);
+    static_assert(!is_bind_backable<decltype(takeAnything), MoveConstructible&>::value);
+
+    static_assert( std::is_constructible_v<NonConstCopyConstructible, NonConstCopyConstructible&>);
+    static_assert(!std::is_move_constructible_v<NonConstCopyConstructible>);
+    static_assert(!is_bind_backable<decltype(takeAnything), NonConstCopyConstructible&>::value);
+    static_assert(!is_bind_backable<decltype(takeAnything), NonConstCopyConstructible>::value);
+  }
+
+  // Make sure bind_back's unspecified type's operator() is SFINAE-friendly
+  {
+    using T = decltype(std::__bind_back(std::declval<int(*)(int, int)>(), 1));
+    static_assert(!std::is_invocable<T>::value);
+    static_assert( std::is_invocable<T, int>::value);
+    static_assert(!std::is_invocable<T, void*>::value);
+    static_assert(!std::is_invocable<T, int, int>::value);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.bind.partial/compose.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.bind.partial/compose.pass.cpp
new file mode 100644
index 0000000..a39352e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.bind.partial/compose.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class F1, class F2>
+// constexpr unspecified __compose(F1&&, F2&&);
+
+#include <functional>
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+template <int X>
+struct Elem {
+  template <int Y>
+  constexpr bool operator==(Elem<Y> const&) const
+  { return X == Y; }
+};
+
+struct F {
+  template <class ...Args>
+  constexpr auto operator()(Args&& ...args) const {
+    return std::make_tuple(Elem<888>{}, std::forward<Args>(args)...);
+  }
+};
+
+struct G {
+  template <class ...Args>
+  constexpr auto operator()(Args&& ...args) const {
+    return std::make_tuple(Elem<999>{}, std::forward<Args>(args)...);
+  }
+};
+
+constexpr bool test() {
+  F const f;
+  G const g;
+
+  {
+    auto c = std::__compose(f, g);
+    assert(c() == f(g()));
+  }
+  {
+    auto c = std::__compose(f, g);
+    assert(c(Elem<0>{}) == f(g(Elem<0>{})));
+  }
+  {
+    auto c = std::__compose(f, g);
+    assert(c(Elem<0>{}, Elem<1>{}) == f(g(Elem<0>{}, Elem<1>{})));
+  }
+  {
+    auto c = std::__compose(f, g);
+    assert(c(Elem<0>{}, Elem<1>{}, Elem<2>{}) == f(g(Elem<0>{}, Elem<1>{}, Elem<2>{})));
+  }
+
+  // Make sure we can call a function that's a pointer to a member function.
+  {
+    struct MemberFunction1 {
+      constexpr Elem<0> foo() { return {}; }
+    };
+    struct MemberFunction2 {
+      constexpr MemberFunction1 bar() { return {}; }
+    };
+    auto c = std::__compose(&MemberFunction1::foo, &MemberFunction2::bar);
+    assert(c(MemberFunction2{}) == Elem<0>{});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.blocks.arc.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.blocks.arc.pass.mm
new file mode 100644
index 0000000..c9ace62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.blocks.arc.pass.mm
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// std::function support for "blocks" when ARC is enabled
+
+// UNSUPPORTED: c++03
+
+// This test requires the Blocks runtime, which is (only?) available on Darwin
+// out-of-the-box.
+// REQUIRES: has-fblocks && has-fobjc-arc && darwin
+
+// ADDITIONAL_COMPILE_FLAGS: -fblocks -fobjc-arc
+
+#include <functional>
+
+#include <cassert>
+#include <cstddef>
+#include <string>
+
+struct Foo {
+  Foo() = default;
+  Foo(std::size_t (^bl)()) : f(bl) {}
+
+  std::function<int()> f;
+};
+
+Foo Factory(std::size_t (^bl)()) {
+  Foo result(bl);
+  return result;
+}
+
+Foo Factory2() {
+  auto hello = std::string("Hello world");
+  return Factory(^() {
+    return hello.size();
+  });
+}
+
+Foo AssignmentFactory(std::size_t (^bl)()) {
+  Foo result;
+  result.f = bl;
+  return result;
+}
+
+Foo AssignmentFactory2() {
+  auto hello = std::string("Hello world");
+  return AssignmentFactory(^() {
+    return hello.size();
+  });
+}
+
+int main(int, char **) {
+  // Case 1, works
+  {
+    auto hello = std::string("Hello world");
+    auto f = AssignmentFactory(^() {
+      return hello.size();
+    });
+    assert(f.f() == 11);
+  }
+
+  // Case 2, works
+  {
+    auto f = AssignmentFactory2();
+    assert(f.f() == 11);
+  }
+
+  // Case 3, works
+  {
+    auto hello = std::string("Hello world");
+    auto f = Factory(^() {
+      return hello.size();
+    });
+    assert(f.f() == 11);
+  }
+
+  // Case 4, used to crash under ARC
+  {
+    auto f = Factory2();
+    assert(f.f() == 11);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.blocks.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.blocks.pass.cpp
new file mode 100644
index 0000000..b95b6eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.blocks.pass.cpp
@@ -0,0 +1,146 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// std::function support for the "blocks" extension
+
+// UNSUPPORTED: c++03
+
+// This test requires the Blocks runtime, which is (only?) available
+// on Darwin out-of-the-box.
+// REQUIRES: has-fblocks && darwin
+
+// ADDITIONAL_COMPILE_FLAGS: -fblocks
+
+#include <functional>
+#include <cstdlib>
+#include <cassert>
+
+#include <Block.h>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+
+struct A {
+  static int count;
+  int id_;
+  explicit A(int id) { ++count; id_ = id; }
+  A(const A &a) { id_ = a.id_; ++count; }
+  ~A() { id_ = -1; --count; }
+  int operator()() const { return -1; }
+  int operator()(int i) const { return i; }
+  int operator()(int, int) const { return -2; }
+  int operator()(int, int, int) const { return -3; }
+  int id() const { return id_; }
+};
+
+int A::count = 0;
+
+int g(int) { return 0; }
+
+int main(int, char**)
+{
+    // swap
+    {
+        std::function<int(int)> f1 = g;
+        std::function<int(int)> f2 = ^(int x) { return x + 1; };
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+        RTTI_ASSERT(*f2.target<int(^)(int)>() != 0);
+        swap(f1, f2);
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        RTTI_ASSERT(*f1.target<int(^)(int)>() != 0);
+        RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    }
+
+    // operator bool
+    {
+        std::function<int(int)> f;
+        assert(!f);
+        f = ^(int x) { return x+1; };
+        assert(f);
+    }
+
+    // operator()
+    {
+        std::function<int ()> r1(^{ return 4; });
+        assert(r1() == 4);
+    }
+    {
+        __block bool called = false;
+        std::function<void ()> r1(^{ called = true; });
+        r1();
+        assert(called);
+    }
+    {
+        __block int param = 0;
+        std::function<void (int)> r1(^(int x){ param = x; });
+        r1(4);
+        assert(param == 4);
+    }
+    {
+        std::function<int (int)> r1(^(int x){ return x + 4; });
+        assert(r1(3) == 7);
+    }
+    {
+        __block int param1 = 0;
+        __block int param2 = 0;
+        std::function<void (int, int)> r1(^(int x, int y){ param1 = x; param2 = y; });
+        r1(3, 4);
+        assert(param1 == 3);
+        assert(param2 == 4);
+    }
+    {
+        std::function<int (int, int)> r1(^(int x, int y){ return x + y; });
+        assert(r1(3, 4) == 7);
+    }
+
+    // swap
+    {
+        std::function<int(int)> f1 = A(999);
+        std::function<int(int)> f2 = ^(int x) { return x + 1; };
+        assert(A::count == 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+        RTTI_ASSERT(f1.target<A>()->id() == 999);
+        RTTI_ASSERT((*f2.target<int(^)(int)>())(13) == 14);
+        f1.swap(f2);
+        assert(A::count == 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+        RTTI_ASSERT((*f1.target<int(^)(int)>())(13) == 14);
+        RTTI_ASSERT(f2.target<A>()->id() == 999);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(A::count == 0);
+
+    // operator== and operator!=
+    {
+        std::function<int(int)> f;
+        assert(f == nullptr);
+        assert(nullptr == f);
+        f = ^(int x) { return x + 1; };
+        assert(f != nullptr);
+        assert(nullptr != f);
+    }
+
+    // target
+    {
+        int (^block)(int) = Block_copy(^(int x) { return x + 1; });
+        std::function<int(int)> f = block;
+        RTTI_ASSERT(*f.target<int(^)(int)>() == block);
+        RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+        Block_release(block);
+    }
+
+    // target_type
+    {
+        std::function<int(int)> f = ^(int x) { return x + 1; };
+        RTTI_ASSERT(f.target_type() == typeid(int(^)(int)));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_1_2_3.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_1_2_3.pass.cpp
new file mode 100644
index 0000000..6d3a9f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_1_2_3.pass.cpp
@@ -0,0 +1,404 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// INVOKE (f, t1, t2, ..., tN)
+
+//------------------------------------------------------------------------------
+// TESTING INVOKE(f, t1, t2, ..., tN)
+//   - Bullet 1 -- (t1.*f)(t2, ..., tN)
+//   - Bullet 2 -- (t1.get().*f)(t2, ..., tN) // t1 is a reference_wrapper
+//   - Bullet 3 -- ((*t1).*f)(t2, ..., tN)
+//
+// Overview:
+//    Bullets 1, 2 and 3 handle the case where 'f' is a pointer to member function.
+//    Bullet 1 only handles the cases where t1 is an object of type T or a
+//    type derived from 'T'. Bullet 2 handles the case where 't1' is a reference
+//    wrapper and bullet 3 handles all other cases.
+//
+// Concerns:
+//   1) cv-qualified member function signatures are accepted.
+//   2) reference qualified member function signatures are accepted.
+//   3) member functions with varargs at the end are accepted.
+//   4) The arguments are perfect forwarded to the member function call.
+//   5) Classes that are publicly derived from 'T' are accepted as the call object
+//   6) All types that dereference to T or a type derived from T can be used
+//      as the call object.
+//   7) Pointers to T or a type derived from T can be used as the call object.
+//   8) Reference return types are properly deduced.
+//   9) reference_wrappers are properly handled and unwrapped.
+//
+//
+// Plan:
+//   1) Create a class that contains a set, 'S', of non-static functions.
+//     'S' should include functions that cover every single combination
+//      of qualifiers and varargs for arities of 0, 1 and 2 (C-1,2,3).
+//      The argument types used in the functions should be non-copyable (C-4).
+//      The functions should return 'MethodID::setUncheckedCall()'.
+//
+//   2) Create a set of supported call object, 'Objs', of different types
+//      and behaviors. (C-5,6,7)
+//
+//   3) Attempt to call each function, 'f', in 'S' with each call object, 'c',
+//      in 'Objs'. After every attempted call to 'f' check that 'f' was
+//      actually called using 'MethodID::checkCalled(<return-value>)'
+//
+//       3b) If 'f' is reference qualified call 'f' with the properly qualified
+//       call object. Otherwise call 'f' with lvalue call objects.
+//
+//       3a) If 'f' is const, volatile, or cv qualified then call it with call
+//       objects that are equally or less cv-qualified.
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "invoke_helpers.h"
+
+//==============================================================================
+// MemFun03 - C++03 compatible set of test member functions.
+struct MemFun03 {
+    typedef void*& R;
+#define F(...) \
+    R f(__VA_ARGS__) { return MethodID<R(MemFun03::*)(__VA_ARGS__)>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) const { return MethodID<R(MemFun03::*)(__VA_ARGS__) const>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) volatile { return MethodID<R(MemFun03::*)(__VA_ARGS__) volatile>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) const volatile { return MethodID<R(MemFun03::*)(__VA_ARGS__) const volatile>::setUncheckedCall(); }
+#
+    F()
+    F(...)
+    F(ArgType&)
+    F(ArgType&, ...)
+    F(ArgType&, ArgType&)
+    F(ArgType&, ArgType&, ...)
+    F(ArgType&, ArgType&, ArgType&)
+    F(ArgType&, ArgType&, ArgType&, ...)
+#undef F
+public:
+    MemFun03() {}
+private:
+    MemFun03(MemFun03 const&);
+    MemFun03& operator=(MemFun03 const&);
+};
+
+
+#if TEST_STD_VER >= 11
+
+//==============================================================================
+// MemFun11 - C++11 reference qualified test member functions.
+struct MemFun11 {
+    typedef void*& R;
+    typedef MemFun11 C;
+#define F(...) \
+    R f(__VA_ARGS__) & { return MethodID<R(C::*)(__VA_ARGS__) &>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) const & { return MethodID<R(C::*)(__VA_ARGS__) const &>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) volatile & { return MethodID<R(C::*)(__VA_ARGS__) volatile &>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) const volatile & { return MethodID<R(C::*)(__VA_ARGS__) const volatile &>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) && { return MethodID<R(C::*)(__VA_ARGS__) &&>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) const && { return MethodID<R(C::*)(__VA_ARGS__) const &&>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) volatile && { return MethodID<R(C::*)(__VA_ARGS__) volatile &&>::setUncheckedCall(); } \
+    R f(__VA_ARGS__) const volatile && { return MethodID<R(C::*)(__VA_ARGS__) const volatile &&>::setUncheckedCall(); }
+#
+    F()
+    F(...)
+    F(ArgType&&)
+    F(ArgType&&, ...)
+    F(ArgType&&, ArgType&&)
+    F(ArgType&&, ArgType&&, ...)
+    F(ArgType&&, ArgType&&, ArgType&&)
+    F(ArgType&&, ArgType&&, ArgType&&, ...)
+#undef F
+public:
+    MemFun11() {}
+private:
+    MemFun11(MemFun11 const&);
+    MemFun11& operator=(MemFun11 const&);
+};
+
+#endif // TEST_STD_VER >= 11
+
+
+
+//==============================================================================
+// TestCase - A test case for a single member function.
+//   ClassType - The type of the class being tested.
+//   CallSig   - The function signature of the method being tested.
+//   Arity     - the arity of 'CallSig'
+//   CV        - the cv qualifiers of 'CallSig' represented as a type tag.
+//   RValue    - The method is RValue qualified.
+//   ArgRValue - Call the method with RValue arguments.
+template <class ClassType, class CallSig, int Arity, class CV,
+          bool RValue = false, bool ArgRValue = false>
+struct TestCaseImp {
+public:
+
+    static void run() { TestCaseImp().doTest(); }
+
+private:
+    //==========================================================================
+    // TEST DISPATCH
+    void doTest() {
+         // (Plan-2) Create test call objects.
+        typedef ClassType T;
+        typedef DerivedFromType<T> D;
+        T obj;
+        T* obj_ptr = &obj;
+        D der;
+        D* der_ptr = &der;
+        DerefToType<T>   dref;
+        DerefPropType<T> dref2;
+        std::reference_wrapper<T> rref(obj);
+        std::reference_wrapper<D> drref(der);
+
+         // (Plan-3) Dispatch based on the CV tags.
+        CV tag;
+        Bool<!RValue> NotRValue;
+        runTestDispatch(tag,  obj);
+        runTestDispatch(tag,  der);
+        runTestDispatch(tag, dref2);
+        runTestDispatchIf(NotRValue, tag, dref);
+        runTestDispatchIf(NotRValue, tag, obj_ptr);
+        runTestDispatchIf(NotRValue, tag, der_ptr);
+#if TEST_STD_VER >= 11
+        runTestDispatchIf(NotRValue, tag, rref);
+        runTestDispatchIf(NotRValue, tag, drref);
+#endif
+    }
+
+    template <class QT, class Tp>
+    void runTestDispatchIf(Bool<true>, QT q, Tp& v) {
+        runTestDispatch(q, v);
+    }
+
+    template <class QT, class Tp>
+    void runTestDispatchIf(Bool<false>, QT, Tp&) {
+    }
+
+    template <class Tp>
+    void runTestDispatch(Q_None, Tp& v) {
+        runTest(v);
+    }
+
+    template <class Tp>
+    void runTestDispatch(Q_Const, Tp& v) {
+        runTest(v);
+        runTest(makeConst(v));
+    }
+
+    template <class Tp>
+    void runTestDispatch(Q_Volatile, Tp& v) {
+        runTest(v);
+        runTest(makeVolatile(v));
+
+    }
+
+    template <class Tp>
+    void runTestDispatch(Q_CV, Tp& v) {
+        runTest(v);
+        runTest(makeConst(v));
+        runTest(makeVolatile(v));
+        runTest(makeCV(v));
+    }
+
+    template <class T>
+    void runTest(const std::reference_wrapper<T>& obj) {
+        typedef Caster<Q_None, RValue> SCast;
+        typedef Caster<Q_None, ArgRValue> ACast;
+        typedef CallSig (ClassType::*MemPtr);
+        // Delegate test to logic in invoke_helpers.h
+        BasicTest<MethodID<MemPtr>, Arity, SCast, ACast> b;
+        b.runTest( (MemPtr)&ClassType::f, obj);
+    }
+
+    template <class T>
+    void runTest(T* obj) {
+        typedef Caster<Q_None, RValue> SCast;
+        typedef Caster<Q_None, ArgRValue> ACast;
+        typedef CallSig (ClassType::*MemPtr);
+        // Delegate test to logic in invoke_helpers.h
+        BasicTest<MethodID<MemPtr>, Arity, SCast, ACast> b;
+        b.runTest( (MemPtr)&ClassType::f, obj);
+    }
+
+    template <class Obj>
+    void runTest(Obj& obj) {
+        typedef Caster<Q_None, RValue> SCast;
+        typedef Caster<Q_None, ArgRValue> ACast;
+        typedef CallSig (ClassType::*MemPtr);
+        // Delegate test to logic in invoke_helpers.h
+        BasicTest<MethodID<MemPtr>, Arity, SCast, ACast> b;
+        b.runTest( (MemPtr)&ClassType::f, obj);
+    }
+};
+
+template <class Sig, int Arity, class CV>
+struct TestCase : public TestCaseImp<MemFun03, Sig, Arity, CV> {};
+
+#if TEST_STD_VER >= 11
+template <class Sig, int Arity, class CV, bool RValue = false>
+struct TestCase11 : public TestCaseImp<MemFun11, Sig, Arity, CV, RValue, true> {};
+
+template <class Type>
+struct ReferenceWrapper {
+    using type = Type;
+    Type* ptr;
+
+    static void fun(Type&) noexcept;
+    static void fun(Type&&) = delete;
+
+    template <class Type2,
+              class = typename std::enable_if<!std::__is_same_uncvref<Type2, ReferenceWrapper>::value>::type>
+    constexpr ReferenceWrapper(Type2&& t) noexcept : ptr(&t) {}
+
+    constexpr Type& get() const noexcept { return *ptr; }
+    constexpr operator Type&() const noexcept { return *ptr; }
+
+    template <class... _ArgTypes>
+    constexpr typename std::__invoke_of<Type&, _ArgTypes...>::type operator() (_ArgTypes&&... __args) const {
+        return std::__invoke(get(), std::forward<_ArgTypes>(__args)...);
+    }
+};
+
+template <class Tp>
+struct DerivedFromRefWrap : public ReferenceWrapper<Tp> {
+  constexpr DerivedFromRefWrap(Tp& tp) : ReferenceWrapper<Tp>(tp) {}
+};
+
+TEST_CONSTEXPR_CXX14 bool test_derived_from_ref_wrap() {
+    int x = 42;
+    ReferenceWrapper<int> r(x);
+    DerivedFromRefWrap<int> d(x);
+    auto get_fn = &ReferenceWrapper<int>::get;
+    auto& ret = std::__invoke(get_fn, r);
+    assert(&ret == &x);
+    auto& ret2 = std::__invoke(get_fn, d);
+    assert(&ret2 == &x);
+
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20 bool test_reference_wrapper_reference_wrapper() {
+    int x = 42;
+    auto get_fn = &std::reference_wrapper<int>::get;
+    std::reference_wrapper<int> r(x);
+    std::reference_wrapper<std::reference_wrapper<int>> r2(r);
+    auto& ret3 = std::__invoke(get_fn, r2);
+    assert(&ret3 == &x);
+
+    return true;
+}
+#endif
+
+int main(int, char**) {
+    typedef void*& R;
+    typedef ArgType A;
+    TestCase<R(),                                   0, Q_None>::run();
+    TestCase<R() const,                             0, Q_Const>::run();
+    TestCase<R() volatile,                          0, Q_Volatile>::run();
+    TestCase<R() const volatile,                    0, Q_CV>::run();
+    TestCase<R(...),                                0, Q_None>::run();
+    TestCase<R(...) const,                          0, Q_Const>::run();
+    TestCase<R(...) volatile,                       0, Q_Volatile>::run();
+    TestCase<R(...) const volatile,                 0, Q_CV>::run();
+    TestCase<R(A&),                                 1, Q_None>::run();
+    TestCase<R(A&) const,                           1, Q_Const>::run();
+    TestCase<R(A&) volatile,                        1, Q_Volatile>::run();
+    TestCase<R(A&) const volatile,                  1, Q_CV>::run();
+    TestCase<R(A&, ...),                            1, Q_None>::run();
+    TestCase<R(A&, ...) const,                      1, Q_Const>::run();
+    TestCase<R(A&, ...) volatile,                   1, Q_Volatile>::run();
+    TestCase<R(A&, ...) const volatile,             1, Q_CV>::run();
+    TestCase<R(A&, A&),                             2, Q_None>::run();
+    TestCase<R(A&, A&) const,                       2, Q_Const>::run();
+    TestCase<R(A&, A&) volatile,                    2, Q_Volatile>::run();
+    TestCase<R(A&, A&) const volatile,              2, Q_CV>::run();
+    TestCase<R(A&, A&, ...),                        2, Q_None>::run();
+    TestCase<R(A&, A&, ...) const,                  2, Q_Const>::run();
+    TestCase<R(A&, A&, ...) volatile,               2, Q_Volatile>::run();
+    TestCase<R(A&, A&, ...) const volatile,         2, Q_CV>::run();
+    TestCase<R(A&, A&, A&),                         3, Q_None>::run();
+    TestCase<R(A&, A&, A&) const,                   3, Q_Const>::run();
+    TestCase<R(A&, A&, A&) volatile,                3, Q_Volatile>::run();
+    TestCase<R(A&, A&, A&) const volatile,          3, Q_CV>::run();
+    TestCase<R(A&, A&, A&, ...),                    3, Q_None>::run();
+    TestCase<R(A&, A&, A&, ...) const,              3, Q_Const>::run();
+    TestCase<R(A&, A&, A&, ...) volatile,           3, Q_Volatile>::run();
+    TestCase<R(A&, A&, A&, ...) const volatile,     3, Q_CV>::run();
+
+#if TEST_STD_VER >= 11
+    TestCase11<R() &,                               0, Q_None>::run();
+    TestCase11<R() const &,                         0, Q_Const>::run();
+    TestCase11<R() volatile &,                      0, Q_Volatile>::run();
+    TestCase11<R() const volatile &,                0, Q_CV>::run();
+    TestCase11<R(...) &,                            0, Q_None>::run();
+    TestCase11<R(...) const &,                      0, Q_Const>::run();
+    TestCase11<R(...) volatile &,                   0, Q_Volatile>::run();
+    TestCase11<R(...) const volatile &,             0, Q_CV>::run();
+    TestCase11<R(A&&) &,                            1, Q_None>::run();
+    TestCase11<R(A&&) const &,                      1, Q_Const>::run();
+    TestCase11<R(A&&) volatile &,                   1, Q_Volatile>::run();
+    TestCase11<R(A&&) const volatile &,             1, Q_CV>::run();
+    TestCase11<R(A&&, ...) &,                       1, Q_None>::run();
+    TestCase11<R(A&&, ...) const &,                 1, Q_Const>::run();
+    TestCase11<R(A&&, ...) volatile &,              1, Q_Volatile>::run();
+    TestCase11<R(A&&, ...) const volatile &,        1, Q_CV>::run();
+    TestCase11<R(A&&, A&&) &,                       2, Q_None>::run();
+    TestCase11<R(A&&, A&&) const &,                 2, Q_Const>::run();
+    TestCase11<R(A&&, A&&) volatile &,              2, Q_Volatile>::run();
+    TestCase11<R(A&&, A&&) const volatile &,        2, Q_CV>::run();
+    TestCase11<R(A&&, A&&, ...) &,                  2, Q_None>::run();
+    TestCase11<R(A&&, A&&, ...) const &,            2, Q_Const>::run();
+    TestCase11<R(A&&, A&&, ...) volatile &,         2, Q_Volatile>::run();
+    TestCase11<R(A&&, A&&, ...) const volatile &,   2, Q_CV>::run();
+    TestCase11<R() &&,                              0, Q_None, /* RValue */ true>::run();
+    TestCase11<R() const &&,                        0, Q_Const, /* RValue */ true>::run();
+    TestCase11<R() volatile &&,                     0, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R() const volatile &&,               0, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(...) &&,                           0, Q_None, /* RValue */ true>::run();
+    TestCase11<R(...) const &&,                     0, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(...) volatile &&,                  0, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(...) const volatile &&,            0, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(A&&) &&,                           1, Q_None, /* RValue */ true>::run();
+    TestCase11<R(A&&) const &&,                     1, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(A&&) volatile &&,                  1, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(A&&) const volatile &&,            1, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(A&&, ...) &&,                      1, Q_None, /* RValue */ true>::run();
+    TestCase11<R(A&&, ...) const &&,                1, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(A&&, ...) volatile &&,             1, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(A&&, ...) const volatile &&,       1, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&) &&,                      2, Q_None, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&) const &&,                2, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&) volatile &&,             2, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&) const volatile &&,       2, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, ...) &&,                 2, Q_None, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, ...) const &&,           2, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, ...) volatile &&,        2, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, ...) const volatile &&,  2, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&) &&,                 3, Q_None, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&) const &&,           3, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&) volatile &&,        3, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&) const volatile &&,  3, Q_CV, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&, ...)  &&,                 3, Q_None, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&, ...)  const &&,           3, Q_Const, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&, ...)  volatile &&,        3, Q_Volatile, /* RValue */ true>::run();
+    TestCase11<R(A&&, A&&, A&&, ...)  const volatile &&,  3, Q_CV, /* RValue */ true>::run();
+
+    test_derived_from_ref_wrap();
+    test_reference_wrapper_reference_wrapper();
+#if TEST_STD_VER > 11
+    static_assert(test_derived_from_ref_wrap(), "");
+#endif
+#if TEST_STD_VER > 17
+    static_assert(test_reference_wrapper_reference_wrapper(), "");
+#endif
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_4_5_6.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_4_5_6.pass.cpp
new file mode 100644
index 0000000..44b706c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_4_5_6.pass.cpp
@@ -0,0 +1,209 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FIXME(EricWF): Make this test pass in C++03 with Clang once the transition
+// has gotten far enough that __invoke works.
+// XFAIL: c++03
+
+// <functional>
+
+// INVOKE (f, t1, t2, ..., tN)
+
+//------------------------------------------------------------------------------
+// TESTING INVOKE(f, t1, t2, ..., tN)
+//   - Bullet 4 -- t1.*f
+//   - Bullet 5 -- t1.get().*f // t1 is a reference wrapper.
+//   - Bullet 6 -- (*t1).*f
+//
+// Overview:
+//    Bullets 4, 5 and 6 handle the case where 'f' is a pointer to member object.
+//    Bullet 4 only handles the cases where t1 is an object of type T or a
+//    type derived from 'T'. Bullet 5 handles cases where 't1' is a reference_wrapper
+//     and bullet 6 handles all other cases.
+//
+// Concerns:
+//   1) The return type is always an lvalue reference.
+//   2) The return type is not less cv-qualified that the object that contains it.
+//   3) The return type is not less cv-qualified than object type.
+//   4) The call object is perfectly forwarded.
+//   5) Classes that are publicly derived from 'T' are accepted as the call object
+//   6) All types that dereference to T or a type derived from T can be used
+//      as the call object.
+//   7) Pointers to T or a type derived from T can be used as the call object.
+//   8) reference_wrapper's are properly unwrapped before invoking the function.
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "invoke_helpers.h"
+
+template <class Tp>
+struct TestMemberObject {
+    TestMemberObject() : object() {}
+    Tp object;
+private:
+    TestMemberObject(TestMemberObject const&);
+    TestMemberObject& operator=(TestMemberObject const&);
+};
+
+template <class ObjectType>
+struct TestCase {
+    public:
+
+    static void run() { TestCase().doTest(); }
+
+private:
+    typedef TestMemberObject<ObjectType> TestType;
+
+    //==========================================================================
+    // TEST DISPATCH
+    void doTest() {
+        typedef DerivedFromType<TestType> Derived;
+        TestType obj;
+        TestType* obj_ptr = &obj;
+        Derived der;
+        Derived* der_ptr = &der;
+        DerefToType<TestType>   dref;
+        DerefPropType<TestType> dref2;
+        std::reference_wrapper<TestType> rref(obj);
+        std::reference_wrapper<Derived> drref(der);
+
+        {
+            typedef ObjectType (TestType::*MemPtr);
+            typedef ObjectType E;
+            MemPtr M = &TestType::object;
+            runTestDispatch<E>(M, obj, &obj.object);
+            runTestDispatch<E>(M, der, &der.object);
+            runTestDispatch<E>(M, dref2, &dref2.object.object);
+            runTestPropCVDispatch<E>(M, obj_ptr, &obj_ptr->object);
+            runTestPropCVDispatch<E>(M, der_ptr, &der_ptr->object);
+#if TEST_STD_VER >= 11
+            runTestPropCVDispatch<E>(M, rref, &(rref.get().object));
+            runTestPropCVDispatch<E>(M, drref, &(drref.get().object));
+#endif
+            runTestNoPropDispatch<E>(M, dref, &dref.object.object);
+        }
+        {
+            typedef ObjectType const (TestType::*CMemPtr);
+            typedef ObjectType const E;
+            CMemPtr M = &TestType::object;
+            runTestDispatch<E>(M, obj, &obj.object);
+            runTestDispatch<E>(M, der, &der.object);
+            runTestDispatch<E>(M, dref2, &dref2.object.object);
+            runTestPropCVDispatch<E>(M, obj_ptr, &obj_ptr->object);
+            runTestPropCVDispatch<E>(M, der_ptr, &der_ptr->object);
+#if TEST_STD_VER >= 11
+            runTestPropCVDispatch<E>(M, rref, &(rref.get().object));
+            runTestPropCVDispatch<E>(M, drref, &(drref.get().object));
+#endif
+            runTestNoPropDispatch<E>(M, dref,    &dref.object.object);
+        }
+        {
+            typedef ObjectType volatile (TestType::*VMemPtr);
+            typedef ObjectType volatile E;
+            VMemPtr M = &TestType::object;
+            runTestDispatch<E>(M, obj,  &obj.object);
+            runTestDispatch<E>(M, der,  &der.object);
+            runTestDispatch<E>(M, dref2, &dref2.object.object);
+            runTestPropCVDispatch<E>(M, obj_ptr, &obj_ptr->object);
+            runTestPropCVDispatch<E>(M, der_ptr, &der_ptr->object);
+#if TEST_STD_VER >= 11
+            runTestPropCVDispatch<E>(M, rref, &(rref.get().object));
+            runTestPropCVDispatch<E>(M, drref, &(drref.get().object));
+#endif
+            runTestNoPropDispatch<E>(M, dref,    &dref.object.object);
+        }
+        {
+            typedef ObjectType const volatile (TestType::*CVMemPtr);
+            typedef ObjectType const volatile E;
+            CVMemPtr M = &TestType::object;
+            runTestDispatch<E>(M, obj,   &obj.object);
+            runTestDispatch<E>(M, der,   &der.object);
+            runTestDispatch<E>(M, dref2, &dref2.object.object);
+            runTestPropCVDispatch<E>(M, obj_ptr, &obj_ptr->object);
+            runTestPropCVDispatch<E>(M, der_ptr, &der_ptr->object);
+#if TEST_STD_VER >= 11
+            runTestPropCVDispatch<E>(M, rref, &(rref.get().object));
+            runTestPropCVDispatch<E>(M, drref, &(drref.get().object));
+#endif
+            runTestNoPropDispatch<E>(M, dref,    &dref.object.object);
+        }
+    }
+
+    template <class Expect, class Fn, class T>
+    void runTestDispatch(Fn M, T& obj, ObjectType* expect) {
+        runTest<Expect &>              (M, C_<T&>(obj),                expect);
+        runTest<Expect const&>         (M, C_<T const&>(obj),          expect);
+        runTest<Expect volatile&>      (M, C_<T volatile&>(obj),       expect);
+        runTest<Expect const volatile&>(M, C_<T const volatile&>(obj), expect);
+#if TEST_STD_VER >= 11
+        runTest<Expect&&>               (M, C_<T&&>(obj),                expect);
+        runTest<Expect const&&>         (M, C_<T const&&>(obj),          expect);
+        runTest<Expect volatile&&>      (M, C_<T volatile&&>(obj),       expect);
+        runTest<Expect const volatile&&>(M, C_<T const volatile&&>(obj), expect);
+#endif
+    }
+
+    template <class Expect, class Fn, class T>
+    void runTestPropCVDispatch(Fn M, T& obj, ObjectType* expect) {
+        runTest<Expect &>              (M, obj,                     expect);
+        runTest<Expect const&>         (M, makeConst(obj),          expect);
+        runTest<Expect volatile&>      (M, makeVolatile(obj),       expect);
+        runTest<Expect const volatile&>(M, makeCV(obj),             expect);
+    }
+
+    template <class Expect, class Fn, class T>
+    void runTestNoPropDispatch(Fn M, T& obj, ObjectType* expect) {
+        runTest<Expect&>(M, C_<T &>(obj),               expect);
+        runTest<Expect&>(M, C_<T const&>(obj),          expect);
+        runTest<Expect&>(M, C_<T volatile&>(obj),       expect);
+        runTest<Expect&>(M, C_<T const volatile&>(obj), expect);
+#if TEST_STD_VER >= 11
+        runTest<Expect&>(M, C_<T&&>(obj),                expect);
+        runTest<Expect&>(M, C_<T const&&>(obj),          expect);
+        runTest<Expect&>(M, C_<T volatile&&>(obj),       expect);
+        runTest<Expect&>(M, C_<T const volatile&&>(obj), expect);
+#endif
+    }
+
+    template <class Expect, class Fn, class T>
+    void runTest(Fn M, const T& obj, ObjectType* expect) {
+         static_assert((std::is_same<
+            decltype(std::__invoke(M, obj)), Expect
+          >::value), "");
+        Expect e = std::__invoke(M, obj);
+        assert(&e == expect);
+    }
+
+    template <class Expect, class Fn, class T>
+#if TEST_STD_VER >= 11
+    void runTest(Fn M, T&& obj, ObjectType* expect) {
+#else
+    void runTest(Fn M, T& obj, ObjectType* expect ) {
+#endif
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(M, std::forward<T>(obj))), Expect
+              >::value), "");
+            Expect e = std::__invoke(M, std::forward<T>(obj));
+            assert(&e == expect);
+        }
+    }
+};
+
+int main(int, char**) {
+    TestCase<ArgType>::run();
+    TestCase<ArgType const>::run();
+    TestCase<ArgType volatile>::run();
+    TestCase<ArgType const volatile>::run();
+    TestCase<ArgType*>::run();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_7.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_7.pass.cpp
new file mode 100644
index 0000000..fb789fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/bullet_7.pass.cpp
@@ -0,0 +1,328 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// INVOKE (f, t1, t2, ..., tN)
+
+//------------------------------------------------------------------------------
+// TESTING INVOKE(f, t1, t2, ..., tN)
+//   - Bullet 7 -- f(t2, ..., tN)
+//
+// Overview:
+//    Bullet 7 handles the cases where the first argument is not a member
+//   function.
+//
+// Concerns:
+//   1) Different types of callable objects are supported. Including
+//      1a) Free Function pointers and references.
+//      1b) Classes which provide a call operator
+//      1c) lambdas
+//   2) The callable objects are perfect forwarded.
+//   3) The arguments are perfect forwarded.
+//   4) Signatures which include varargs are supported.
+//   5) In C++03 3 extra arguments should be allowed.
+//
+// Plan:
+//  1) Define a set of free functions, 'SF', and class types with call
+//     operators, 'SC', that address concerns 4 and 5. The free functions should
+//     return 'FunctionID::setUncheckedCall()' and the call operators should
+//     return 'MethodID::setUncheckedCall()'.
+//
+//  2) For each function 'f' in 'SF' and 'SC' attempt to call 'f'
+//     using the correct number of arguments and cv-ref qualifiers. Check that
+//     'f' has been called using 'FunctionID::checkCall()' if 'f' is a free
+//     function and 'MethodID::checkCall()' otherwise.
+
+
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "invoke_helpers.h"
+
+
+//==============================================================================
+// freeFunction03 - A C++03 free function.
+void*& freeFunction03() {
+    return FunctionPtrID<void*&(), freeFunction03>::setUncheckedCall();
+}
+
+void*& freeFunction03(...) {
+    return FunctionPtrID<void*&(...), freeFunction03>::setUncheckedCall();
+}
+
+template <class A0>
+void*& freeFunction03(A0&) {
+    return FunctionPtrID<void*&(A0&), freeFunction03>::setUncheckedCall();
+}
+
+
+template <class A0>
+void*& freeFunction03(A0&, ...) {
+    return FunctionPtrID<void*&(A0&, ...), freeFunction03>::setUncheckedCall();
+}
+
+template <class A0, class A1>
+void*& freeFunction03(A0&, A1&) {
+    return FunctionPtrID<void*&(A0&, A1&), freeFunction03>::setUncheckedCall();
+}
+
+
+template <class A0, class A1>
+void*& freeFunction03(A0&, A1&, ...) {
+    return FunctionPtrID<void*&(A0&, A1&, ...), freeFunction03>::setUncheckedCall();
+}
+
+template <class A0, class A1, class A2>
+void*& freeFunction03(A0&, A1&, A2&) {
+    return FunctionPtrID<void*&(A0&, A1&, A2&), freeFunction03>::setUncheckedCall();
+}
+
+template <class A0, class A1, class A2>
+void*& freeFunction03(A0&, A1&, A2&, ...) {
+    return FunctionPtrID<void*&(A0&, A1&, A2&, ...), freeFunction03>::setUncheckedCall();
+}
+
+//==============================================================================
+// Functor03 - C++03 compatible functor object
+struct Functor03 {
+    typedef void*& R;
+    typedef Functor03 C;
+#define F(Args, ...) \
+    __VA_ARGS__ R operator() Args { return MethodID<R(C::*) Args>::setUncheckedCall(); } \
+    __VA_ARGS__ R operator() Args const { return MethodID<R(C::*) Args const>::setUncheckedCall(); } \
+    __VA_ARGS__ R operator() Args volatile { return MethodID<R(C::*) Args volatile>::setUncheckedCall(); } \
+    __VA_ARGS__ R operator() Args const volatile { return MethodID<R(C::*) Args const volatile>::setUncheckedCall(); }
+#
+    F(())
+    F((A0&), template <class A0>)
+    F((A0&, A1&), template <class A0, class A1>)
+    F((A0&, A1&, A2&), template <class A0, class A1, class A2>)
+#undef F
+public:
+    Functor03() {}
+private:
+    Functor03(Functor03 const&);
+    Functor03& operator=(Functor03 const&);
+};
+
+
+#if TEST_STD_VER >= 11
+
+//==============================================================================
+// freeFunction11 - A C++11 free function.
+template <class ...Args>
+void*& freeFunction11(Args&&...) {
+    return FunctionPtrID<void*&(Args&&...), freeFunction11>::setUncheckedCall();
+}
+
+template <class ...Args>
+void*& freeFunction11(Args&&...,...) {
+    return FunctionPtrID<void*&(Args&&...,...), freeFunction11>::setUncheckedCall();
+}
+
+//==============================================================================
+// Functor11 - C++11 reference qualified test member functions.
+struct Functor11 {
+    typedef void*& R;
+    typedef Functor11 C;
+
+#define F(CV) \
+    template <class ...Args> \
+    R operator()(Args&&...) CV { return MethodID<R(C::*)(Args&&...) CV>::setUncheckedCall(); }
+#
+    F(&)
+    F(const &)
+    F(volatile &)
+    F(const volatile &)
+    F(&&)
+    F(const &&)
+    F(volatile &&)
+    F(const volatile &&)
+#undef F
+public:
+    Functor11() {}
+private:
+    Functor11(Functor11 const&);
+    Functor11& operator=(Functor11 const&);
+};
+
+#endif // TEST_STD_VER >= 11
+
+
+//==============================================================================
+// TestCaseFunctorImp - A test case for an operator() class method.
+//   ClassType - The type of the call object.
+//   CallSig   - The function signature of the call operator being tested.
+//   Arity     - the arity of 'CallSig'
+//   ObjCaster - Transformation function applied to call object.
+//   ArgCaster - Transformation function applied to the extra arguments.
+template <class ClassType, class CallSig, int Arity,
+          class ObjCaster, class ArgCaster = LValueCaster>
+struct TestCaseFunctorImp {
+public:
+    static void run() {
+        typedef MethodID<CallSig ClassType::*> MID;
+        BasicTest<MID, Arity, ObjCaster, ArgCaster> t;
+        typedef ClassType T;
+        typedef DerivedFromType<T> D;
+        T obj;
+        D der;
+        t.runTest(obj);
+        t.runTest(der);
+    }
+};
+
+//==============================================================================
+// TestCaseFreeFunction - A test case for a free function.
+//   CallSig   - The function signature of the free function being tested.
+//   FnPtr     - The function being tested.
+//   Arity     - the arity of 'CallSig'
+//   ArgCaster - Transformation function to be applied to the extra arguments.
+template <class CallSig, CallSig* FnPtr, int Arity, class ArgCaster>
+struct TestCaseFreeFunction {
+public:
+    static void run() {
+        typedef FunctionPtrID<CallSig, FnPtr> FID;
+        BasicTest<FID, Arity, LValueCaster, ArgCaster> t;
+
+        DerefToType<CallSig*> deref_to(FnPtr);
+        DerefToType<CallSig&> deref_to_ref(*FnPtr);
+
+        t.runTest(FnPtr);
+        t.runTest(*FnPtr);
+        t.runTest(deref_to);
+        t.runTest(deref_to_ref);
+    }
+};
+
+//==============================================================================
+//                          runTest Helpers
+//==============================================================================
+#if TEST_STD_VER >= 11
+template <class Sig, int Arity, class ArgCaster>
+void runFunctionTestCase11() {
+    TestCaseFreeFunction<Sig, freeFunction11, Arity, ArgCaster>();
+}
+#endif
+
+template <class Sig, int Arity, class ArgCaster>
+void runFunctionTestCase() {
+    TestCaseFreeFunction<Sig, freeFunction03, Arity, ArgCaster>();
+#if TEST_STD_VER >= 11
+    runFunctionTestCase11<Sig, Arity, ArgCaster>();
+#endif
+}
+
+template <class Sig, int Arity, class ObjCaster, class ArgCaster>
+void runFunctorTestCase() {
+    TestCaseFunctorImp<Functor03, Sig, Arity, ObjCaster, ArgCaster>::run();
+}
+
+template <class Sig, int Arity, class ObjCaster>
+void runFunctorTestCase() {
+    TestCaseFunctorImp<Functor03, Sig, Arity, ObjCaster>::run();
+}
+
+#if TEST_STD_VER >= 11
+// runTestCase - Run a test case for C++11 class functor types
+template <class Sig, int Arity, class ObjCaster, class ArgCaster = LValueCaster>
+void runFunctorTestCase11() {
+    TestCaseFunctorImp<Functor11, Sig, Arity, ObjCaster, ArgCaster>::run();
+}
+#endif
+
+// runTestCase - Run a test case for both function and functor types.
+template <class Sig, int Arity, class ArgCaster>
+void runTestCase() {
+    runFunctionTestCase<Sig, Arity, ArgCaster>();
+    runFunctorTestCase <Sig, Arity, LValueCaster, ArgCaster>();
+};
+
+int main(int, char**) {
+    typedef void*& R;
+    typedef ArgType A;
+    typedef A const CA;
+
+    runTestCase< R(),                                   0, LValueCaster      >();
+    runTestCase< R(A&),                                 1, LValueCaster      >();
+    runTestCase< R(A&, A&),                             2, LValueCaster      >();
+    runTestCase< R(A&, A&, A&),                         3, LValueCaster      >();
+    runTestCase< R(CA&),                                1, ConstCaster       >();
+    runTestCase< R(CA&, CA&),                           2, ConstCaster       >();
+    runTestCase< R(CA&, CA&, CA&),                      3, ConstCaster       >();
+
+    runFunctionTestCase<R(...),                         0, LValueCaster      >();
+    runFunctionTestCase<R(A&, ...),                     1, LValueCaster      >();
+    runFunctionTestCase<R(A&, A&, ...),                 2, LValueCaster      >();
+    runFunctionTestCase<R(A&, A&, A&, ...),             3, LValueCaster      >();
+
+#if TEST_STD_VER >= 11
+    runFunctionTestCase11<R(A&&),                       1, MoveCaster        >();
+    runFunctionTestCase11<R(A&&, ...),                  1, MoveCaster        >();
+#endif
+
+    runFunctorTestCase<R(),                             0, LValueCaster      >();
+    runFunctorTestCase<R() const,                       0, ConstCaster       >();
+    runFunctorTestCase<R() volatile,                    0, VolatileCaster    >();
+    runFunctorTestCase<R() const volatile,              0, CVCaster          >();
+    runFunctorTestCase<R(A&),                           1, LValueCaster      >();
+    runFunctorTestCase<R(A&) const,                     1, ConstCaster       >();
+    runFunctorTestCase<R(A&) volatile,                  1, VolatileCaster    >();
+    runFunctorTestCase<R(A&) const volatile,            1, CVCaster          >();
+    runFunctorTestCase<R(A&, A&),                       2, LValueCaster      >();
+    runFunctorTestCase<R(A&, A&) const,                 2, ConstCaster       >();
+    runFunctorTestCase<R(A&, A&) volatile,              2, VolatileCaster    >();
+    runFunctorTestCase<R(A&, A&) const volatile,        2, CVCaster          >();
+    runFunctorTestCase<R(A&, A&, A&),                   3, LValueCaster      >();
+    runFunctorTestCase<R(A&, A&, A&) const,             3, ConstCaster       >();
+    runFunctorTestCase<R(A&, A&, A&) volatile,          3, VolatileCaster    >();
+    runFunctorTestCase<R(A&, A&, A&) const volatile,    3, CVCaster          >();
+    {
+    typedef ConstCaster CC;
+    runFunctorTestCase<R(CA&),                          1, LValueCaster,   CC>();
+    runFunctorTestCase<R(CA&) const,                    1, ConstCaster,    CC>();
+    runFunctorTestCase<R(CA&) volatile,                 1, VolatileCaster, CC>();
+    runFunctorTestCase<R(CA&) const volatile,           1, CVCaster,       CC>();
+    runFunctorTestCase<R(CA&, CA&),                     2, LValueCaster,   CC>();
+    runFunctorTestCase<R(CA&, CA&) const,               2, ConstCaster,    CC>();
+    runFunctorTestCase<R(CA&, CA&) volatile,            2, VolatileCaster, CC>();
+    runFunctorTestCase<R(CA&, CA&) const volatile,      2, CVCaster,       CC>();
+    runFunctorTestCase<R(CA&, CA&, CA&),                3, LValueCaster,   CC>();
+    runFunctorTestCase<R(CA&, CA&, CA&) const,          3, ConstCaster,    CC>();
+    runFunctorTestCase<R(CA&, CA&, CA&) volatile,       3, VolatileCaster, CC>();
+    runFunctorTestCase<R(CA&, CA&, CA&) const volatile, 3, CVCaster,       CC>();
+    }
+
+#if TEST_STD_VER >= 11
+    runFunctorTestCase11<R() &,                    0, LValueCaster          >();
+    runFunctorTestCase11<R() const &,              0, ConstCaster           >();
+    runFunctorTestCase11<R() volatile &,           0, VolatileCaster        >();
+    runFunctorTestCase11<R() const volatile &,     0, CVCaster              >();
+    runFunctorTestCase11<R() &&,                   0, MoveCaster            >();
+    runFunctorTestCase11<R() const &&,             0, MoveConstCaster       >();
+    runFunctorTestCase11<R() volatile &&,          0, MoveVolatileCaster    >();
+    runFunctorTestCase11<R() const volatile &&,    0, MoveCVCaster          >();
+    {
+    typedef MoveCaster MC;
+    runFunctorTestCase11<R(A&&) &,                 1, LValueCaster,       MC>();
+    runFunctorTestCase11<R(A&&) const &,           1, ConstCaster,        MC>();
+    runFunctorTestCase11<R(A&&) volatile &,        1, VolatileCaster,     MC>();
+    runFunctorTestCase11<R(A&&) const volatile &,  1, CVCaster,           MC>();
+    runFunctorTestCase11<R(A&&) &&,                1, MoveCaster,         MC>();
+    runFunctorTestCase11<R(A&&) const &&,          1, MoveConstCaster,    MC>();
+    runFunctorTestCase11<R(A&&) volatile &&,       1, MoveVolatileCaster, MC>();
+    runFunctorTestCase11<R(A&&) const volatile &&, 1, MoveCVCaster,       MC>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/invoke.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/invoke.pass.cpp
new file mode 100644
index 0000000..e534553
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/invoke.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// [func.require]
+
+#include <type_traits>
+#include <functional>
+
+#include "test_macros.h"
+
+template <typename T, int N>
+struct Array
+{
+    typedef T type[N];
+};
+
+struct Type
+{
+    Array<char, 1>::type& f1();
+    Array<char, 2>::type& f2() const;
+#if TEST_STD_VER >= 11
+    Array<char, 1>::type& g1()        &;
+    Array<char, 2>::type& g2() const  &;
+    Array<char, 3>::type& g3()       &&;
+    Array<char, 4>::type& g4() const &&;
+#endif
+};
+
+int main(int, char**)
+{
+    static_assert(sizeof(std::__invoke(&Type::f1, std::declval<Type        >())) == 1, "");
+    static_assert(sizeof(std::__invoke(&Type::f2, std::declval<Type const  >())) == 2, "");
+#if TEST_STD_VER >= 11
+    static_assert(sizeof(std::__invoke(&Type::g1, std::declval<Type       &>())) == 1, "");
+    static_assert(sizeof(std::__invoke(&Type::g2, std::declval<Type const &>())) == 2, "");
+    static_assert(sizeof(std::__invoke(&Type::g3, std::declval<Type      &&>())) == 3, "");
+    static_assert(sizeof(std::__invoke(&Type::g4, std::declval<Type const&&>())) == 4, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/invoke_helpers.h b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/invoke_helpers.h
new file mode 100644
index 0000000..f6f418b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.require/invoke_helpers.h
@@ -0,0 +1,375 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef INVOKE_HELPERS_H
+#define INVOKE_HELPERS_H
+
+#include <type_traits>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+template <int I>
+struct Int : public std::integral_constant<int, I> {};
+
+template <bool P>
+struct Bool : public std::integral_constant<bool, P> {};
+
+struct Q_None {
+    template <class T>
+    struct apply { typedef T type; };
+};
+
+struct Q_Const {
+    template <class T>
+    struct apply { typedef T const type; };
+};
+
+struct Q_Volatile {
+    template <class T>
+    struct apply { typedef T volatile type; };
+};
+
+struct Q_CV {
+    template <class T>
+    struct apply { typedef T const volatile type; };
+};
+
+// Caster - A functor object that performs cv-qualifier and value category
+//   conversions.
+//   QualTag - A metafunction type that applies cv-qualifiers to its argument.
+//   RValue - True if the resulting object should be an RValue reference.
+//            False otherwise.
+template <class QualTag, bool RValue = false>
+struct Caster {
+    template <class T>
+    struct apply {
+        typedef typename std::remove_reference<T>::type RawType;
+        typedef typename QualTag::template apply<RawType>::type CVType;
+#if TEST_STD_VER >= 11
+        typedef typename std::conditional<RValue,
+            CVType&&, CVType&
+        >::type type;
+#else
+        typedef CVType& type;
+#endif
+    };
+
+    template <class T>
+    typename apply<T>::type
+    operator()(T& obj) const {
+        typedef typename apply<T>::type OutType;
+        return static_cast<OutType>(obj);
+    }
+};
+
+typedef Caster<Q_None>           LValueCaster;
+typedef Caster<Q_Const>          ConstCaster;
+typedef Caster<Q_Volatile>       VolatileCaster;
+typedef Caster<Q_CV>             CVCaster;
+typedef Caster<Q_None,     true> MoveCaster;
+typedef Caster<Q_Const,    true> MoveConstCaster;
+typedef Caster<Q_Volatile, true> MoveVolatileCaster;
+typedef Caster<Q_CV,       true> MoveCVCaster;
+
+
+template <class Tp>
+Tp const& makeConst(Tp& ref) { return ref; }
+
+template <class Tp>
+Tp const* makeConst(Tp* ptr) { return ptr; }
+
+template <class Tp>
+std::reference_wrapper<const Tp> makeConst(std::reference_wrapper<Tp>& ref) {
+    return std::reference_wrapper<const Tp>(ref.get());
+}
+
+template <class Tp>
+Tp volatile& makeVolatile(Tp& ref) { return ref; }
+
+template <class Tp>
+Tp volatile* makeVolatile(Tp* ptr) { return ptr; }
+
+template <class Tp>
+std::reference_wrapper<volatile Tp> makeVolatile(std::reference_wrapper<Tp>& ref) {
+    return std::reference_wrapper<volatile Tp>(ref.get());
+}
+
+template <class Tp>
+Tp const volatile& makeCV(Tp& ref) { return ref; }
+
+template <class Tp>
+Tp const volatile* makeCV(Tp* ptr) { return ptr; }
+
+template <class Tp>
+std::reference_wrapper<const volatile Tp> makeCV(std::reference_wrapper<Tp>& ref) {
+    return std::reference_wrapper<const volatile Tp>(ref.get());
+}
+
+// A shorter name for 'static_cast'
+template <class QualType, class Tp>
+QualType C_(Tp& v) { return static_cast<QualType>(v); };
+
+//==============================================================================
+// ArgType - A non-copyable type intended to be used as a dummy argument type
+//   to test functions.
+struct ArgType {
+    int value;
+    explicit ArgType(int val = 0) : value(val) {}
+private:
+    ArgType(ArgType const&);
+    ArgType& operator=(ArgType const&);
+};
+
+//==============================================================================
+// DerivedFromBase - A type that derives from its template argument 'Base'
+template <class Base>
+struct DerivedFromType : public Base {
+    DerivedFromType() : Base() {}
+    template <class Tp>
+    explicit DerivedFromType(Tp const& t) : Base(t) {}
+};
+
+//==============================================================================
+// DerefToType - A type that dereferences to its template argument 'To'.
+//   The cv-ref qualifiers of the 'DerefToType' object do not propagate
+//   to the resulting 'To' object.
+template <class To>
+struct DerefToType {
+    To object;
+
+    DerefToType() {}
+
+    template <class Up>
+    explicit DerefToType(Up const& val) : object(val) {}
+
+    To& operator*() const volatile { return const_cast<To&>(object); }
+};
+
+//==============================================================================
+// DerefPropToType - A type that dereferences to its template argument 'To'.
+//   The cv-ref qualifiers of the 'DerefPropToType' object propagate
+//   to the resulting 'To' object.
+template <class To>
+struct DerefPropType {
+    To object;
+
+    DerefPropType() {}
+
+    template <class Up>
+    explicit DerefPropType(Up const& val) : object(val) {}
+
+#if TEST_STD_VER < 11
+    To& operator*() { return object; }
+    To const& operator*() const { return object; }
+    To volatile& operator*() volatile  { return object; }
+    To const volatile& operator*() const volatile { return object; }
+#else
+    To& operator*() & { return object; }
+    To const& operator*() const & { return object; }
+    To volatile& operator*() volatile  & { return object; }
+    To const volatile& operator*() const volatile & { return object; }
+    To&& operator*() && { return static_cast<To &&>(object); }
+    To const&& operator*() const && { return static_cast<To const&&>(object); }
+    To volatile&& operator*() volatile  && { return static_cast<To volatile&&>(object); }
+    To const volatile&& operator*() const volatile && { return static_cast<To const volatile&&>(object); }
+#endif
+};
+
+//==============================================================================
+// MethodID - A type that uniquely identifies a member function for a class.
+//   This type is used to communicate between the member functions being tested
+//   and the tests invoking them.
+// - Test methods should call 'setUncheckedCall()' whenever they are invoked.
+// - Tests consume the unchecked call using checkCall(<return-value>)` to assert
+//   that the method has been called and that the return value of `__invoke`
+//   matches what the method actually returned.
+template <class T>
+struct MethodID {
+    typedef void* IDType;
+
+    static int dummy; // A dummy memory location.
+    static void* id; // The "ID" is the value of this pointer.
+    static bool unchecked_call; // Has a call happened that has not been checked.
+
+    static void*& setUncheckedCall() {
+        assert(unchecked_call == false);
+        unchecked_call = true;
+        return id;
+    }
+
+    static bool checkCalled(void*& return_value) {
+        bool old = unchecked_call;
+        unchecked_call = false;
+        return old && id == return_value && &id == &return_value;
+    }
+};
+
+template <class T> int   MethodID<T>::dummy = 0;
+template <class T> void* MethodID<T>::id = (void*)&MethodID<T>::dummy;
+template <class T> bool  MethodID<T>::unchecked_call = false;
+
+
+//==============================================================================
+// FunctionPtrID - Like MethodID but for free function pointers.
+template <class T, T*>
+struct FunctionPtrID {
+    static int dummy; // A dummy memory location.
+    static void* id; // The "ID" is the value of this pointer.
+    static bool unchecked_call; // Has a call happened that has not been checked.
+
+    static void*& setUncheckedCall() {
+        assert(unchecked_call == false);
+        unchecked_call = true;
+        return id;
+    }
+
+    static bool checkCalled(void*& return_value) {
+        bool old = unchecked_call;
+        unchecked_call = false;
+        return old && id == return_value && &id == &return_value;
+    }
+};
+
+template <class T, T* Ptr> int   FunctionPtrID<T, Ptr>::dummy = 0;
+template <class T, T* Ptr> void* FunctionPtrID<T, Ptr>::id = (void*)&FunctionPtrID<T, Ptr>::dummy;
+template <class T, T* Ptr> bool  FunctionPtrID<T, Ptr>::unchecked_call = false;
+
+//==============================================================================
+// BasicTest - The basic test structure for everything except
+// member object pointers.
+// ID - The "Function Identifier" type used either MethodID or FunctionPtrID.
+// Arity - The Arity of the call signature.
+// ObjectCaster - The object transformation functor type.
+// ArgCaster - The extra argument transformation functor type.
+template <class ID, int Arity, class ObjectCaster = LValueCaster,
+                               class ArgCaster    = LValueCaster>
+struct BasicTest {
+    template <class ObjectT>
+    void runTest(ObjectT& object) {
+        Int<Arity> A;
+        runTestImp(A, object);
+    }
+
+    template <class MethodPtr, class ObjectT>
+    void runTest(MethodPtr ptr, ObjectT& object) {
+        Int<Arity> A;
+        runTestImp(A, ptr, object);
+    }
+
+private:
+    typedef void*& CallRet;
+    ObjectCaster object_cast;
+    ArgCaster arg_cast;
+    ArgType a0, a1, a2;
+
+    //==========================================================================
+    //                       BULLET 1, 2 AND 3 TEST METHODS
+    //==========================================================================
+    template <class MethodPtr, class ObjectT>
+    void runTestImp(Int<0>, MethodPtr ptr, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(ptr, object_cast(object)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(ptr, object_cast(object));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    template <class MethodPtr, class ObjectT>
+    void runTestImp(Int<1>, MethodPtr ptr, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(ptr, object_cast(object), arg_cast(a0)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(ptr, object_cast(object), arg_cast(a0));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    template <class MethodPtr, class ObjectT>
+    void runTestImp(Int<2>, MethodPtr ptr, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(ptr, object_cast(object), arg_cast(a0), arg_cast(a1)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(ptr, object_cast(object), arg_cast(a0), arg_cast(a1));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    template <class MethodPtr, class ObjectT>
+    void runTestImp(Int<3>, MethodPtr ptr, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(ptr, object_cast(object), arg_cast(a0), arg_cast(a1), arg_cast(a2)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(ptr, object_cast(object), arg_cast(a0), arg_cast(a1), arg_cast(a2));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    //==========================================================================
+    //                       BULLET 7 TEST METHODS
+    //==========================================================================
+    template <class ObjectT>
+    void runTestImp(Int<0>, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(object_cast(object)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(object_cast(object));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    template <class ObjectT>
+    void runTestImp(Int<1>, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(object_cast(object), arg_cast(a0)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(object_cast(object), arg_cast(a0));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    template <class ObjectT>
+    void runTestImp(Int<2>, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(object_cast(object), arg_cast(a0), arg_cast(a1)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(object_cast(object), arg_cast(a0), arg_cast(a1));
+            assert(ID::checkCalled(ret));
+        }
+    }
+
+    template <class ObjectT>
+    void runTestImp(Int<3>, ObjectT& object) {
+        {
+            static_assert((std::is_same<
+                decltype(std::__invoke(object_cast(object), arg_cast(a0), arg_cast(a1), arg_cast(a2)))
+              , CallRet>::value), "");
+            assert(ID::unchecked_call == false);
+            CallRet ret = std::__invoke(object_cast(object), arg_cast(a0), arg_cast(a1), arg_cast(a2));
+            assert(ID::checkCalled(ret));
+        }
+    }
+};
+
+#endif // INVOKE_HELPERS_H
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/move_reentrant.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/move_reentrant.pass.cpp
new file mode 100644
index 0000000..b9cf2c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/move_reentrant.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function& operator=(function &&);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+  static std::function<void()> global;
+  static bool cancel;
+
+  ~A() {
+    DoNotOptimize(cancel);
+    if (cancel)
+      global = std::function<void()>(nullptr);
+  }
+  void operator()() {}
+};
+
+std::function<void()> A::global;
+bool A::cancel = false;
+
+int main(int, char**)
+{
+  A::global = A();
+  RTTI_ASSERT(A::global.target<A>());
+
+  // Check that we don't recurse in A::~A().
+  A::cancel = true;
+  A::global = std::function<void()>(nullptr);
+  RTTI_ASSERT(!A::global.target<A>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign_reentrant.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign_reentrant.pass.cpp
new file mode 100644
index 0000000..b8dc4e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign_reentrant.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function& operator=(nullptr_t);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+  static std::function<void()> global;
+  static bool cancel;
+
+  ~A() {
+    DoNotOptimize(cancel);
+    if (cancel)
+      global = nullptr;
+  }
+  void operator()() {}
+};
+
+std::function<void()> A::global;
+bool A::cancel = false;
+
+int main(int, char**)
+{
+  A::global = A();
+  RTTI_ASSERT(A::global.target<A>());
+
+  // Check that we don't recurse in A::~A().
+  A::cancel = true;
+  A::global = nullptr;
+  RTTI_ASSERT(!A::global.target<A>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/binary.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/binary.pass.cpp
new file mode 100644
index 0000000..f14359f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/binary.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// reference_wrapper
+
+// check for deriving from binary_function
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+class functor1
+    : public std::unary_function<int, char>
+{
+};
+
+class functor2
+    : public std::binary_function<char, int, double>
+{
+};
+
+class functor3
+    : public std::unary_function<int, int>,
+      public std::binary_function<char, int, double>
+{
+public:
+    typedef float result_type;
+};
+
+class functor4
+    : public std::unary_function<int, int>,
+      public std::binary_function<char, int, double>
+{
+public:
+};
+
+struct C
+{
+    typedef int argument_type;
+    typedef int result_type;
+};
+
+int main(int, char**)
+{
+    static_assert((!std::is_base_of<std::binary_function<int, char, int>,
+                                    std::reference_wrapper<functor1> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<char, int, double>,
+                                   std::reference_wrapper<functor2> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<char, int, double>,
+                                   std::reference_wrapper<functor3> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<char, int, double>,
+                                   std::reference_wrapper<functor4> >::value), "");
+    static_assert((!std::is_base_of<std::binary_function<int, int, int>,
+                                    std::reference_wrapper<C> >::value), "");
+    static_assert((!std::is_base_of<std::binary_function<int, int, float>,
+                                    std::reference_wrapper<float ()> >::value), "");
+    static_assert((!std::is_base_of<std::binary_function<int, int, float>,
+                                   std::reference_wrapper<float (int)> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<int, int, float>,
+                                    std::reference_wrapper<float (int, int)> >::value), "");
+    static_assert((!std::is_base_of<std::binary_function<int, int, float>,
+                                    std::reference_wrapper<float(*)()> >::value), "");
+    static_assert((!std::is_base_of<std::binary_function<int, int, float>,
+                                   std::reference_wrapper<float(*)(int)> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<int, int, float>,
+                                    std::reference_wrapper<float(*)(int, int)> >::value), "");
+    static_assert((!std::is_base_of<std::binary_function<C*, int, float>,
+                                   std::reference_wrapper<float(C::*)()> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<C*, int, float>,
+                                   std::reference_wrapper<float(C::*)(int)> >::value), "");
+    static_assert((std::is_base_of<std::binary_function<const volatile C*, int, float>,
+                                   std::reference_wrapper<float(C::*)(int) const volatile> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/layout.binary.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/layout.binary.compile.pass.cpp
new file mode 100644
index 0000000..023ed8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/layout.binary.compile.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: msvc
+
+// ensure that binary_function always has the same ABI
+
+#include <functional>
+
+struct S1 : std::less<int>, std::greater<int> {};
+
+static_assert(sizeof(S1) == 2, "");
+
+struct S2 : std::less<int> { char c; };
+
+static_assert(sizeof(S2) == 1, "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/layout.unary.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/layout.unary.compile.pass.cpp
new file mode 100644
index 0000000..58b8dc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/layout.unary.compile.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: msvc
+
+// ensure that unary_function always has the same ABI
+
+#include <functional>
+
+struct S1 : std::negate<int>, std::bit_not<int> {};
+
+static_assert(sizeof(S1) == 2, "");
+
+struct S2 : std::negate<int> { char c; };
+
+static_assert(sizeof(S2) == 1, "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/unary.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/unary.pass.cpp
new file mode 100644
index 0000000..4d7ab16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/refwrap/unary.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// reference_wrapper
+
+// check for deriving from unary_function
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+class functor1
+    : public std::unary_function<int, char>
+{
+};
+
+class functor2
+    : public std::binary_function<char, int, double>
+{
+};
+
+class functor3
+    : public std::unary_function<int, int>,
+      public std::binary_function<char, int, double>
+{
+public:
+    typedef float result_type;
+};
+
+class functor4
+    : public std::unary_function<int, int>,
+      public std::binary_function<char, int, double>
+{
+public:
+};
+
+struct C
+{
+    typedef int argument_type;
+    typedef int result_type;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::unary_function<int, char>,
+                                   std::reference_wrapper<functor1> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<char, int>,
+                                    std::reference_wrapper<functor2> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, int>,
+                                   std::reference_wrapper<functor3> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, int>,
+                                   std::reference_wrapper<functor4> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, int>,
+                                    std::reference_wrapper<C> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, float>,
+                                    std::reference_wrapper<float(*)()> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, float>,
+                                   std::reference_wrapper<float (int)> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, float>,
+                                    std::reference_wrapper<float (int, int)> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<int, float>,
+                                   std::reference_wrapper<float(*)(int)> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<int, float>,
+                                    std::reference_wrapper<float(*)(int, int)> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<C*, float>,
+                                   std::reference_wrapper<float(C::*)()> >::value), "");
+    static_assert((std::is_base_of<std::unary_function<const volatile C*, float>,
+                                   std::reference_wrapper<float(C::*)() const volatile> >::value), "");
+    static_assert((!std::is_base_of<std::unary_function<C*, float>,
+                                   std::reference_wrapper<float(C::*)(int)> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/unord.hash/murmur2_or_cityhash_ubsan_unsigned_overflow_ignored.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/unord.hash/murmur2_or_cityhash_ubsan_unsigned_overflow_ignored.pass.cpp
new file mode 100644
index 0000000..1f29528
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/unord.hash/murmur2_or_cityhash_ubsan_unsigned_overflow_ignored.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test that UBSAN doesn't generate unsigned integer overflow diagnostics
+// from within the hashing internals.
+
+#include <cstdint>
+#include <functional>
+#include <limits>
+#include <string>
+#include <utility>
+
+#include "test_macros.h"
+
+typedef std::__murmur2_or_cityhash<uint32_t> Hash32;
+typedef std::__murmur2_or_cityhash<uint64_t> Hash64;
+
+void test(const void* key, int len) {
+  for (int i=1; i <= len; ++i) {
+    Hash32 h1;
+    Hash64 h2;
+    DoNotOptimize(h1(key, i));
+    DoNotOptimize(h2(key, i));
+  }
+}
+
+int main(int, char**) {
+  const std::string TestCases[] = {
+      "abcdaoeuaoeclaoeoaeuaoeuaousaotehu]+}sthoasuthaoesutahoesutaohesutaoeusaoetuhasoetuhaoseutaoseuthaoesutaohes",
+      "00000000000000000000000000000000000000000000000000000000000000000000000",
+      "1237546895+54+4554985416849484213464984765465464654564565645645646546456546546"
+  };
+  const size_t NumCases = sizeof(TestCases)/sizeof(TestCases[0]);
+  for (size_t i=0; i < NumCases; ++i)
+    test(TestCases[i].data(), TestCases[i].length());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/version.pass.cpp
new file mode 100644
index 0000000..6418733
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/function.objects/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+#include <functional>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/intseq/for_each_index_sequence.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/intseq/for_each_index_sequence.pass.cpp
new file mode 100644
index 0000000..77d7ddc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/intseq/for_each_index_sequence.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+// inline constexpr auto __for_each_index_sequence = []<size_t... _Index>(index_sequence<_Index...>, auto __func)
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  int count = 0;
+  std::__for_each_index_sequence(std::make_index_sequence<8>(), [&]<size_t _Index> { count += _Index; });
+  assert(count == 28);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/default.allocator/allocator_types.void.cxx20_allocator_void_no_members.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/default.allocator/allocator_types.void.cxx20_allocator_void_no_members.verify.cpp
new file mode 100644
index 0000000..8888683
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/default.allocator/allocator_types.void.cxx20_allocator_void_no_members.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that members of std::allocator<void> are not provided in C++20
+// with _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_VOID_SPECIALIZATION but without
+// _LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_VOID_SPECIALIZATION
+//
+// Ignore any extra errors arising from typo correction.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error
+
+#include <memory>
+
+std::allocator<void>::pointer x;            // expected-error-re {{no {{(type|template)}} named 'pointer'}}
+std::allocator<void>::const_pointer y;      // expected-error-re {{no {{(type|template)}} named 'const_pointer'}}
+std::allocator<void>::value_type z;         // expected-error-re {{no {{(type|template)}} named 'value_type'}}
+std::allocator<void>::rebind<int>::other t; // expected-error-re {{no {{(type|template)}} named 'rebind'}}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/default.allocator/allocator_types.void.cxx20_with_removed_members.compile.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/default.allocator/allocator_types.void.cxx20_with_removed_members.compile.pass.cpp
new file mode 100644
index 0000000..3f151ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/default.allocator/allocator_types.void.cxx20_with_removed_members.compile.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that the nested types of std::allocator<void> are provided in C++20
+// with a flag that keeps the removed members.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_VOID_SPECIALIZATION
+
+#include <memory>
+#include <type_traits>
+
+static_assert((std::is_same<std::allocator<void>::pointer, void*>::value), "");
+static_assert((std::is_same<std::allocator<void>::const_pointer, const void*>::value), "");
+static_assert((std::is_same<std::allocator<void>::value_type, void>::value), "");
+static_assert((std::is_same<std::allocator<void>::rebind<int>::other, std::allocator<int> >::value), "");
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp
new file mode 100644
index 0000000..60ef98a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T> constexpr T* __to_address(T* p) noexcept;
+// template <class Ptr> constexpr auto __to_address(const Ptr& p) noexcept;
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Irrelevant;
+
+struct P1 {
+    using element_type = Irrelevant;
+    TEST_CONSTEXPR explicit P1(int *p) : p_(p) { }
+    TEST_CONSTEXPR int *operator->() const { return p_; }
+    int *p_;
+};
+
+struct P2 {
+    using element_type = Irrelevant;
+    TEST_CONSTEXPR explicit P2(int *p) : p_(p) { }
+    TEST_CONSTEXPR P1 operator->() const { return p_; }
+    P1 p_;
+};
+
+struct P3 {
+    TEST_CONSTEXPR explicit P3(int *p) : p_(p) { }
+    int *p_;
+};
+
+template<>
+struct std::pointer_traits<P3> {
+    static TEST_CONSTEXPR int *to_address(const P3& p) { return p.p_; }
+};
+
+struct P4 {
+    TEST_CONSTEXPR explicit P4(int *p) : p_(p) { }
+    int *operator->() const;  // should never be called
+    int *p_;
+};
+
+template<>
+struct std::pointer_traits<P4> {
+    static TEST_CONSTEXPR int *to_address(const P4& p) { return p.p_; }
+};
+
+struct P5 {
+    using element_type = Irrelevant;
+    int const* const& operator->() const;
+};
+
+struct P6 {};
+
+template<>
+struct std::pointer_traits<P6> {
+    static int const* const& to_address(const P6&);
+};
+
+// Taken from a build breakage caused in Clang
+namespace P7 {
+    template<typename T> struct CanProxy;
+    template<typename T>
+    struct CanQual {
+        CanProxy<T> operator->() const { return CanProxy<T>(); }
+    };
+    template<typename T>
+    struct CanProxy {
+        const CanProxy<T> *operator->() const { return nullptr; }
+    };
+} // namespace P7
+
+namespace P8 {
+    template<class T>
+    struct FancyPtrA {
+        using element_type = Irrelevant;
+        T *p_;
+        TEST_CONSTEXPR FancyPtrA(T *p) : p_(p) {}
+        T& operator*() const;
+        TEST_CONSTEXPR T *operator->() const { return p_; }
+    };
+    template<class T>
+    struct FancyPtrB {
+        T *p_;
+        TEST_CONSTEXPR FancyPtrB(T *p) : p_(p) {}
+        T& operator*() const;
+    };
+} // namespace P8
+
+template<class T>
+struct std::pointer_traits<P8::FancyPtrB<T> > {
+    static TEST_CONSTEXPR T *to_address(const P8::FancyPtrB<T>& p) { return p.p_; }
+};
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+
+TEST_CONSTEXPR_CXX14 bool test() {
+    int i = 0;
+    ASSERT_NOEXCEPT(std::__to_address(&i));
+    assert(std::__to_address(&i) == &i);
+    P1 p1(&i);
+    ASSERT_NOEXCEPT(std::__to_address(p1));
+    assert(std::__to_address(p1) == &i);
+    P2 p2(&i);
+    ASSERT_NOEXCEPT(std::__to_address(p2));
+    assert(std::__to_address(p2) == &i);
+    P3 p3(&i);
+    ASSERT_NOEXCEPT(std::__to_address(p3));
+    assert(std::__to_address(p3) == &i);
+    P4 p4(&i);
+    ASSERT_NOEXCEPT(std::__to_address(p4));
+    assert(std::__to_address(p4) == &i);
+
+    ASSERT_SAME_TYPE(decltype(std::__to_address(std::declval<int const*>())), int const*);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(std::declval<P5>())), int const*);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(std::declval<P6>())), int const*);
+
+    P7::CanQual<int>* p7 = nullptr;
+    assert(std::__to_address(p7) == nullptr);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(p7)), P7::CanQual<int>*);
+
+    Holder<Incomplete> *p8_nil = nullptr;  // for C++03 compatibility
+    P8::FancyPtrA<Holder<Incomplete> > p8a = p8_nil;
+    assert(std::__to_address(p8a) == p8_nil);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(p8a)), decltype(p8_nil));
+
+    P8::FancyPtrB<Holder<Incomplete> > p8b = p8_nil;
+    assert(std::__to_address(p8b) == p8_nil);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(p8b)), decltype(p8_nil));
+
+    int p9[2] = {};
+    assert(std::__to_address(p9) == p9);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(p9)), int*);
+
+    const int p10[2] = {};
+    assert(std::__to_address(p10) == p10);
+    ASSERT_SAME_TYPE(decltype(std::__to_address(p10)), const int*);
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER >= 14
+    static_assert(test(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_on_funcptr.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_on_funcptr.verify.cpp
new file mode 100644
index 0000000..02b1676
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_on_funcptr.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T> constexpr T* __to_address(T* p) noexcept;
+//     Mandates: T is not a function type.
+
+#include <memory>
+
+int (*pf)();
+
+void test() {
+    (void)std::__to_address(pf); // expected-error@*:* {{is a function type}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_on_function.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_on_function.verify.cpp
new file mode 100644
index 0000000..b8825a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_on_function.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T> constexpr T* __to_address(T* p) noexcept;
+//     Mandates: T is not a function type.
+
+#include <memory>
+
+int f();
+
+void test() {
+    (void)std::__to_address(f); // expected-error@*:* {{is a function type}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_std_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_std_iterators.pass.cpp
new file mode 100644
index 0000000..5eed12d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/pointer.conversion/to_address_std_iterators.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T> constexpr T* __to_address(T* p) noexcept;
+// template <class Ptr> constexpr auto __to_address(const Ptr& p) noexcept;
+
+#include <memory>
+
+#include <array>
+#include <cassert>
+#include <span>
+#include <string>
+#include <string_view>
+#include <valarray>
+#include <vector>
+#include "test_macros.h"
+
+template<class C>
+void test_container_iterators(C c)
+{
+    const C& cc = c;
+    assert(std::__to_address(c.begin()) == c.data());
+    assert(std::__to_address(c.end()) == c.data() + c.size());
+    assert(std::__to_address(cc.begin()) == cc.data());
+    assert(std::__to_address(cc.end()) == cc.data() + cc.size());
+}
+
+void test_valarray_iterators()
+{
+    std::valarray<int> v(100);
+    int *p = std::__to_address(std::begin(v));
+    int *q = std::__to_address(std::end(v));
+    assert(q - p == 100);
+}
+
+int main(int, char**) {
+    test_container_iterators(std::array<int, 3>());
+    test_container_iterators(std::vector<int>(3));
+    test_container_iterators(std::string("abc"));
+#if TEST_STD_VER >= 17
+    test_container_iterators(std::string_view("abc"));
+#endif
+#if TEST_STD_VER >= 20
+    test_container_iterators(std::span<const char>("abc"));
+#endif
+    test_valarray_iterators();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/ptr.align/assume_aligned.power2.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/ptr.align/assume_aligned.power2.verify.cpp
new file mode 100644
index 0000000..92c9e92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/ptr.align/assume_aligned.power2.verify.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// #include <memory>
+
+// template<size_t N, class T>
+// [[nodiscard]] constexpr T* assume_aligned(T* ptr);
+
+// This test checks that we static_assert inside std::assume_aligned<N>(p)
+// when N is not a power of two. However, Clang will already emit an error
+// in its own __builtin_assume_aligned, so we ignore that additional error
+// for the purpose of this test. We also ignore the additional warning about
+// remainder by 0 being undefined.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error -Xclang -verify-ignore-unexpected=warning
+
+#include <memory>
+
+void f() {
+  int *p = nullptr;
+  (void)std::assume_aligned<0>(p);  // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}}
+  (void)std::assume_aligned<3>(p);  // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}}
+  (void)std::assume_aligned<5>(p);  // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}}
+  (void)std::assume_aligned<33>(p); // expected-error@*:* {{std::assume_aligned<N>(p) requires N to be a power of two}}
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/race_condition.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/race_condition.pass.cpp
new file mode 100644
index 0000000..cbecd2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/race_condition.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+//
+// <memory>
+//
+// class shared_ptr
+//
+// This test attempts to create a race condition surrounding use_count()
+// with the hope that TSAN will diagnose it.
+
+#include <memory>
+#include <atomic>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+typedef std::shared_ptr<int> Ptr;
+typedef std::weak_ptr<int> WeakPtr;
+
+std::atomic_bool Start;
+std::atomic_bool KeepRunning;
+
+struct TestRunner {
+    TestRunner(Ptr xx) : x(xx) {}
+    void operator()() {
+        while (Start == false) {}
+        while (KeepRunning) {
+            // loop to prevent always checking the atomic.
+            for (int i=0; i < 100000; ++i) {
+                Ptr x2 = x; // increment shared count
+                WeakPtr x3 = x; // increment weak count
+                Ptr x4 = x3.lock(); // increment shared count via lock
+                WeakPtr x5 = x3; // increment weak count
+            }
+        }
+    }
+    Ptr x;
+};
+
+void run_test(Ptr p) {
+    Start = false;
+    KeepRunning = true;
+    assert(p.use_count() == 2);
+    TestRunner r(p);
+    assert(p.use_count() == 3);
+    std::thread t1 = support::make_test_thread(r); // Start the test thread.
+    assert(p.use_count() == 4);
+    Start = true;
+    // Run until we witness 25 use count changes via both
+    // shared and weak pointer methods.
+    WeakPtr w = p;
+    int shared_changes_count = 0;
+    int weak_changes_count = 0;
+    while (shared_changes_count < 25 && weak_changes_count < 25) {
+        // check use_count on the shared_ptr
+       int last = p.use_count();
+       int new_val = p.use_count();
+       assert(last >= 4);
+       assert(new_val >= 4);
+       if (last != new_val) ++shared_changes_count;
+       // Check use_count on the weak_ptr
+       last = w.use_count();
+       new_val = w.use_count();
+       assert(last >= 4);
+       assert(new_val >= 4);
+       if (last != new_val) ++weak_changes_count;
+    }
+    // kill the test thread.
+    KeepRunning = false;
+    t1.join();
+    assert(p.use_count() == 3);
+}
+
+int main(int, char**) {
+  {
+    // Test with out-of-place shared_count.
+    Ptr p(new int(42));
+    run_test(p);
+    assert(p.use_count() == 1);
+  }
+  {
+    // Test with in-place shared_count.
+    int val = 42;
+    Ptr p = std::make_shared<int>(val);
+    run_test(p);
+    assert(p.use_count() == 1);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
new file mode 100644
index 0000000..a0f3b5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <type_traits>
+
+template <int> struct Tag {};
+
+template <int ID>
+using SPtr = std::shared_ptr<void(Tag<ID>)>;
+
+template <int ID>
+using FnType = void(Tag<ID>);
+
+template <int ID>
+void TestFn(Tag<ID>) {}
+
+template <int ID>
+FnType<ID>* getFn() {
+  return &TestFn<ID>;
+}
+
+struct Deleter {
+  template <class Tp>
+  void operator()(Tp) const {
+    using RawT = typename std::remove_pointer<Tp>::type;
+    static_assert(std::is_function<RawT>::value ||
+                  std::is_same<typename std::remove_cv<RawT>::type,
+                               std::nullptr_t>::value,
+                  "");
+  }
+};
+
+int main(int, char**) {
+  {
+    SPtr<0> s; // OK
+    SPtr<1> s1(nullptr); // OK
+    SPtr<2> s2(getFn<2>(), Deleter{}); // OK
+    SPtr<3> s3(nullptr, Deleter{}); // OK
+  }
+
+  // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}default_delete cannot be instantiated for function types}}
+  std::default_delete<FnType<5>> deleter{}; // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/libcxx.control_block_layout.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/libcxx.control_block_layout.pass.cpp
new file mode 100644
index 0000000..0af79ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/libcxx.control_block_layout.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This test makes sure that the control block implementation used for non-array
+// types in std::make_shared and std::allocate_shared is ABI compatible with the
+// original implementation.
+//
+// This test is relevant because the implementation of that control block is
+// different starting in C++20, a change that was required to implement P0674.
+
+#include <cassert>
+#include <cstddef>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include <string>
+#include <vector>
+
+#include "test_macros.h"
+
+// This is the pre-C++20 implementation of the control block used by non-array
+// std::allocate_shared and std::make_shared. We keep it here so that we can
+// make sure our implementation is backwards compatible with it forever.
+//
+// Of course, the class and its methods were renamed, but the size and layout
+// of the class should remain the same as the original implementation.
+template <class T, class Alloc>
+struct OldEmplaceControlBlock
+  : std::__shared_weak_count
+{
+  explicit OldEmplaceControlBlock(Alloc a) : data_(std::move(a), std::__value_init_tag()) { }
+  T* get_elem() noexcept { return std::addressof(data_.second()); }
+  Alloc* get_alloc() noexcept { return std::addressof(data_.first()); }
+
+private:
+  virtual void __on_zero_shared() noexcept {
+    // Not implemented
+  }
+
+  virtual void __on_zero_shared_weak() noexcept {
+    // Not implemented
+  }
+
+  std::__compressed_pair<Alloc, T> data_;
+};
+
+template <class T, template <class> class Alloc>
+void test() {
+  using Old = OldEmplaceControlBlock<T, Alloc<T>>;
+  using New = std::__shared_ptr_emplace<T, Alloc<T>>;
+
+  static_assert(sizeof(New) == sizeof(Old), "");
+  static_assert(alignof(New) == alignof(Old), "");
+
+  // Also make sure each member is at the same offset
+  Alloc<T> a;
+  Old old(a);
+  New new_(a);
+
+  // 1. Check the stored object
+  {
+    char const* old_elem = reinterpret_cast<char const*>(old.get_elem());
+    char const* new_elem = reinterpret_cast<char const*>(new_.__get_elem());
+    std::ptrdiff_t old_offset = old_elem - reinterpret_cast<char const*>(&old);
+    std::ptrdiff_t new_offset = new_elem - reinterpret_cast<char const*>(&new_);
+    assert(new_offset == old_offset && "offset of stored element changed");
+  }
+
+  // 2. Check the allocator
+  {
+    char const* old_alloc = reinterpret_cast<char const*>(old.get_alloc());
+    char const* new_alloc = reinterpret_cast<char const*>(new_.__get_alloc());
+    std::ptrdiff_t old_offset = old_alloc - reinterpret_cast<char const*>(&old);
+    std::ptrdiff_t new_offset = new_alloc - reinterpret_cast<char const*>(&new_);
+    assert(new_offset == old_offset && "offset of allocator changed");
+  }
+
+  // Make sure both types have the same triviality (that has ABI impact since
+  // it determined how objects are passed). Both should be non-trivial.
+  static_assert(std::is_trivial<New>::value == std::is_trivial<Old>::value, "");
+}
+
+// Object types to store in the control block
+struct TrivialEmptyType { };
+struct TrivialNonEmptyType { char c[11]; };
+struct FinalEmptyType final { };
+struct NonTrivialType {
+  char c[22];
+  NonTrivialType() : c{'x'} { }
+};
+
+// Allocator types
+template <class T>
+struct TrivialEmptyAlloc {
+  using value_type = T;
+  TrivialEmptyAlloc() = default;
+  template <class U> TrivialEmptyAlloc(TrivialEmptyAlloc<U>) { }
+  T* allocate(std::size_t) { return nullptr; }
+  void deallocate(T*, std::size_t) { }
+};
+template <class T>
+struct TrivialNonEmptyAlloc {
+  char storage[77];
+  using value_type = T;
+  TrivialNonEmptyAlloc() = default;
+  template <class U> TrivialNonEmptyAlloc(TrivialNonEmptyAlloc<U>) { }
+  T* allocate(std::size_t) { return nullptr; }
+  void deallocate(T*, std::size_t) { }
+};
+template <class T>
+struct FinalEmptyAlloc final {
+  using value_type = T;
+  FinalEmptyAlloc() = default;
+  template <class U> FinalEmptyAlloc(FinalEmptyAlloc<U>) { }
+  T* allocate(std::size_t) { return nullptr; }
+  void deallocate(T*, std::size_t) { }
+};
+template <class T>
+struct NonTrivialAlloc {
+  char storage[88];
+  using value_type = T;
+  NonTrivialAlloc() { }
+  template <class U> NonTrivialAlloc(NonTrivialAlloc<U>) { }
+  T* allocate(std::size_t) { return nullptr; }
+  void deallocate(T*, std::size_t) { }
+};
+
+int main(int, char**) {
+  test<TrivialEmptyType, TrivialEmptyAlloc>();
+  test<TrivialEmptyType, TrivialNonEmptyAlloc>();
+  test<TrivialEmptyType, FinalEmptyAlloc>();
+  test<TrivialEmptyType, NonTrivialAlloc>();
+
+  test<TrivialNonEmptyType, TrivialEmptyAlloc>();
+  test<TrivialNonEmptyType, TrivialNonEmptyAlloc>();
+  test<TrivialNonEmptyType, FinalEmptyAlloc>();
+  test<TrivialNonEmptyType, NonTrivialAlloc>();
+
+  test<FinalEmptyType, TrivialEmptyAlloc>();
+  test<FinalEmptyType, TrivialNonEmptyAlloc>();
+  test<FinalEmptyType, FinalEmptyAlloc>();
+  test<FinalEmptyType, NonTrivialAlloc>();
+
+  test<NonTrivialType, TrivialEmptyAlloc>();
+  test<NonTrivialType, TrivialNonEmptyAlloc>();
+  test<NonTrivialType, FinalEmptyAlloc>();
+  test<NonTrivialType, NonTrivialAlloc>();
+
+  // Test a few real world types just to make sure we didn't mess up badly somehow
+  test<std::string, std::allocator>();
+  test<int, std::allocator>();
+  test<std::vector<int>, std::allocator>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.zero_size.compile.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.zero_size.compile.fail.cpp
new file mode 100644
index 0000000..3c678d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.zero_size.compile.fail.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Make sure that std::allocate_shared<T[0]>(...) fails at compile-time.
+// While Clang and GCC appear to support T[0] as a language extension, that support is
+// unreliable (for example T[0] doesn't match a T[N] partial specialization on Clang as
+// of writing this). So instead, we make sure that this doesn't work at all with our
+// implementation.
+
+#include <memory>
+
+void f() {
+  auto p = std::allocate_shared<int[0]>(std::allocator<int[0]>());
+  (void)p;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.zero_size.compile.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.zero_size.compile.fail.cpp
new file mode 100644
index 0000000..35964a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.zero_size.compile.fail.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Make sure that std::make_shared<T[0]>(...) fails at compile-time.
+// While Clang and GCC appear to support T[0] as a language extension, that support is
+// unreliable (for example T[0] doesn't match a T[N] partial specialization on Clang as
+// of writing this). So instead, we make sure that this doesn't work at all with our
+// implementation.
+
+#include <memory>
+
+void f() {
+  auto p = std::make_shared<int[0]>();
+  (void)p;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/version.pass.cpp
new file mode 100644
index 0000000..cb88556
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/memory/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+#include <memory>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/is_referenceable.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/is_referenceable.pass.cpp
new file mode 100644
index 0000000..336f6e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/is_referenceable.pass.cpp
@@ -0,0 +1,194 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// __libcpp_is_referenceable<Tp>
+//
+// [defns.referenceable] defines "a referenceable type" as:
+// An object type, a function type that does not have cv-qualifiers
+//    or a ref-qualifier, or a reference type.
+//
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Foo {};
+
+static_assert((!std::__libcpp_is_referenceable<void>::value), "");
+static_assert((std::__libcpp_is_referenceable<int>::value), "");
+static_assert((std::__libcpp_is_referenceable<int[3]>::value), "");
+static_assert((std::__libcpp_is_referenceable<int[]>::value), "");
+static_assert((std::__libcpp_is_referenceable<int&>::value), "");
+static_assert((std::__libcpp_is_referenceable<const int&>::value), "");
+static_assert((std::__libcpp_is_referenceable<int*>::value), "");
+static_assert((std::__libcpp_is_referenceable<const int*>::value), "");
+static_assert((std::__libcpp_is_referenceable<Foo>::value), "");
+static_assert((std::__libcpp_is_referenceable<const Foo>::value), "");
+static_assert((std::__libcpp_is_referenceable<Foo&>::value), "");
+static_assert((std::__libcpp_is_referenceable<const Foo&>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<Foo&&>::value), "");
+static_assert((std::__libcpp_is_referenceable<const Foo&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<int __attribute__((__vector_size__(8)))>::value), "");
+static_assert((std::__libcpp_is_referenceable<const int __attribute__((__vector_size__(8)))>::value), "");
+static_assert((std::__libcpp_is_referenceable<float __attribute__((__vector_size__(16)))>::value), "");
+static_assert((std::__libcpp_is_referenceable<const float __attribute__((__vector_size__(16)))>::value), "");
+
+// Functions without cv-qualifiers are referenceable
+static_assert((std::__libcpp_is_referenceable<void()>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void() const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void() &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void() const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void() &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void() const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(int)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(int) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(int, float)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(int, float) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(int, float, Foo&)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(...)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(...) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(...) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(...) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(...) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(...) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(int, ...)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(int, ...) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, ...) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, ...) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, ...) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, ...) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(int, float, ...)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(int, float, ...) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, ...) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, ...) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, ...) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, ...) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void(int, float, Foo&, ...)>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&, ...) const>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&, ...) &>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&, ...) const&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&, ...) &&>::value), "");
+static_assert((!std::__libcpp_is_referenceable<void(int, float, Foo&, ...) const&&>::value), "");
+#endif
+
+// member functions with or without cv-qualifiers are referenceable
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)()>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)() const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)() &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)() const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)() &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)() const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(...)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(...) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(...) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(...) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(...) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(...) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, ...)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, ...) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, ...) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, ...) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, ...) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, ...) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, ...)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, ...) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, ...) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, ...) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, ...) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, ...) const&&>::value), "");
+#endif
+
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&, ...)>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&, ...) const>::value), "");
+#if TEST_STD_VER >= 11
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&, ...) &>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&, ...) const&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&, ...) &&>::value), "");
+static_assert((std::__libcpp_is_referenceable<void (Foo::*)(int, float, Foo&, ...) const&&>::value), "");
+#endif
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/meta_base.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/meta_base.pass.cpp
new file mode 100644
index 0000000..4696e3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/meta_base.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wprivate-header")
+#include <__type_traits/is_valid_expansion.h>
+#include <type_traits>
+#include <cassert>
+
+struct Bomb;
+template <int N, class T = Bomb >
+struct BOOM {
+  using Explode = typename T::BOOMBOOM;
+};
+
+using True = std::true_type;
+using False = std::false_type;
+
+void test_if() {
+  ASSERT_SAME_TYPE(std::_If<true, int, long>, int);
+  ASSERT_SAME_TYPE(std::_If<false, int, long>, long);
+}
+
+void test_and() {
+  static_assert(std::_And<True>::value, "");
+  static_assert(!std::_And<False>::value, "");
+  static_assert(std::_And<True, True>::value, "");
+  static_assert(!std::_And<False, BOOM<1> >::value, "");
+  static_assert(!std::_And<True, True, True, False, BOOM<2> >::value, "");
+}
+
+void test_or() {
+  static_assert(std::_Or<True>::value, "");
+  static_assert(!std::_Or<False>::value, "");
+  static_assert(std::_Or<False, True>::value, "");
+  static_assert(std::_Or<True, std::_Not<BOOM<3> > >::value, "");
+  static_assert(!std::_Or<False, False>::value, "");
+  static_assert(std::_Or<True, BOOM<1> >::value, "");
+  static_assert(std::_Or<False, False, False, False, True, BOOM<2> >::value, "");
+}
+
+void test_combined() {
+  static_assert(std::_And<True, std::_Or<False, True, BOOM<4> > >::value, "");
+  static_assert(std::_And<True, std::_Or<False, True, BOOM<4> > >::value, "");
+  static_assert(std::_Not<std::_And<True, False, BOOM<5> > >::value, "");
+}
+
+struct MemberTest {
+  static int foo;
+  using type = long;
+
+  void func(int);
+};
+struct Empty {};
+struct MemberTest2 {
+  using foo = int;
+};
+template <class T>
+using HasFooData = decltype(T::foo);
+template <class T>
+using HasFooType = typename T::foo;
+
+template <class T, class U>
+using FuncCallable = decltype(std::declval<T>().func(std::declval<U>()));
+template <class T>
+using BadCheck = typename T::DOES_NOT_EXIST;
+
+void test_is_valid_trait() {
+  static_assert(std::_IsValidExpansion<HasFooData, MemberTest>::value, "");
+  static_assert(!std::_IsValidExpansion<HasFooType, MemberTest>::value, "");
+  static_assert(!std::_IsValidExpansion<HasFooData, MemberTest2>::value, "");
+  static_assert(std::_IsValidExpansion<HasFooType, MemberTest2>::value, "");
+  static_assert(std::_IsValidExpansion<FuncCallable, MemberTest, int>::value, "");
+  static_assert(!std::_IsValidExpansion<FuncCallable, MemberTest, void*>::value, "");
+}
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_is_same.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_is_same.sh.cpp
new file mode 100644
index 0000000..cfd8adb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_is_same.sh.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a dummy feature that prevents this test from running by default.
+// REQUIRES: template-cost-testing
+
+// The table below compares the compile time and object size for each of the
+// variants listed in the RUN script.
+//
+//  Impl          Compile Time    Object Size
+// -------------------------------------------
+// std::_IsSame:    689.634 ms     356 K
+// std::is_same:  8,129.180 ms     560 K
+//
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %S/orig.o -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace -std=c++17
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %S/new.o -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace -std=c++17 -DTEST_NEW
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "template_cost_testing.h"
+
+template <int N> struct Arg { enum { value = 1 }; };
+
+#ifdef TEST_NEW
+#define IS_SAME  std::_IsSame
+#else
+#define IS_SAME std::is_same
+#endif
+
+#define TEST_CASE_NOP() IS_SAME < Arg< __COUNTER__ >, Arg < __COUNTER__ > >::value,
+#define TEST_CASE_TYPE() IS_SAME < Arg< __COUNTER__ >, Arg < __COUNTER__ > >,
+
+int sink(...);
+
+int x = sink(
+  REPEAT_10000(TEST_CASE_NOP)
+  REPEAT_10000(TEST_CASE_NOP) 42
+);
+
+void Foo( REPEAT_1000(TEST_CASE_TYPE) int) { }
+
+static_assert(__COUNTER__ > 10000, "");
+
+void escape() {
+
+sink(&x);
+sink(&Foo);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_metafunctions.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_metafunctions.sh.cpp
new file mode 100644
index 0000000..4815ce3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_metafunctions.sh.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a dummy feature that prevents this test from running by default.
+// REQUIRES: template-cost-testing
+
+// The table below compares the compile time and object size for each of the
+// variants listed in the RUN script.
+//
+//  Impl          Compile Time    Object Size
+// -------------------------------------------
+// _And:         3,498.639 ms     158 M
+// __lazy_and:  10,138.982 ms     334 M
+// __and_:      14,181.851 ms     648 M
+//
+
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %S/new.o -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace -std=c++17
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %S/lazy.o -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace  -std=c++17 -DTEST_LAZY_AND
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %S/std.o -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace   -std=c++17 -DTEST_STD_AND
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "template_cost_testing.h"
+using std::true_type;
+using std::false_type;
+
+#define FALSE_T() std::false_type,
+#define TRUE_T() std::true_type,
+
+#ifdef TEST_LAZY_AND
+#define TEST_AND std::__lazy_and
+#define TEST_OR std::__lazy_or
+#elif defined(TEST_STD_AND)
+#define TEST_AND std::__and_
+#define TEST_OR std::__or_
+#else
+#define TEST_AND std::_And
+#define TEST_OR std::_Or
+#endif
+
+void sink(...);
+
+void Foo1(TEST_AND < REPEAT_1000(TRUE_T) true_type > t1) { sink(&t1); }
+void Foo2(TEST_AND < REPEAT_1000(TRUE_T) REPEAT_1000(TRUE_T) true_type > t2) { sink(&t2); }
+void Foo3(TEST_AND < REPEAT_1000(TRUE_T) true_type, false_type > t3) { sink(&t3); }
+void Foo4(TEST_AND < REPEAT_1000(TRUE_T) REPEAT_1000(TRUE_T) true_type, false_type > t4) { sink(&t4); }
+void Foo5(TEST_AND < false_type, REPEAT_1000(TRUE_T) true_type > t5) { sink(&t5); }
+void Foo6(TEST_AND < false_type, REPEAT_1000(TRUE_T) REPEAT_1000(TRUE_T) true_type > t6) { sink(&t6); }
+
+void escape() {
+
+sink(&Foo1);
+sink(&Foo2);
+sink(&Foo3);
+sink(&Foo4);
+sink(&Foo5);
+sink(&Foo6);
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_variant_overloads_impl.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_variant_overloads_impl.sh.cpp
new file mode 100644
index 0000000..6fdd023
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_variant_overloads_impl.sh.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a dummy feature that prevents this test from running by default.
+// REQUIRES: template-cost-testing
+
+// Test the cost of the mechanism used to create an overload set used by variant
+// to determine which alternative to construct.
+
+// The table below compares the compile time and object size for each of the
+// variants listed in the RUN script.
+//
+//  Impl           Compile Time  Object Size
+// -----------------------------------------------------
+// flat:              959 ms        792 KiB
+// recursive:      23,444 ms     23,000 KiB
+// -----------------------------------------------------
+// variant_old:    16,894 ms     17,000 KiB
+// variant_new:     1,105 ms        828 KiB
+
+
+// RUN: %{cxx} %{flags} %{compile_flags} -std=c++17 -c %s \
+// RUN:    -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace -g \
+// RUN:    -DTEST_NS=flat_impl -o %S/flat.o
+// RUN: %{cxx} %{flags} %{compile_flags} -std=c++17 -c %s \
+// RUN:    -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace -g \
+// RUN:    -DTEST_NS=rec_impl -o %S/rec.o
+// RUN: %{cxx} %{flags} %{compile_flags} -std=c++17 -c %s \
+// RUN:    -ggdb  -ggnu-pubnames -ftemplate-depth=5000 -ftime-trace -g \
+// RUN:    -DTEST_NS=variant_impl -o %S/variant.o
+
+#include <type_traits>
+#include <tuple>
+#include <cassert>
+#include <variant>
+
+#include "test_macros.h"
+#include "template_cost_testing.h"
+
+template <size_t Idx>
+struct TestType {};
+
+template <class T>
+struct ID {
+  using type = T;
+};
+
+namespace flat_impl {
+
+struct OverloadBase { void operator()() const; };
+
+template <class Tp, size_t Idx>
+struct Overload {
+  auto operator()(Tp, Tp) const -> ID<Tp>;
+};
+
+template <class ...Bases>
+struct AllOverloads : OverloadBase, Bases... {};
+
+template <class IdxSeq>
+struct MakeOverloads;
+
+template <size_t ..._Idx>
+struct MakeOverloads<std::__tuple_indices<_Idx...> > {
+  template <class ...Types>
+  using Apply = AllOverloads<Overload<Types, _Idx>...>;
+};
+
+template <class ...Types>
+using Overloads = typename MakeOverloads<
+    std::__make_indices_imp<sizeof...(Types), 0> >::template Apply<Types...>;
+
+} // namespace flat_impl
+
+
+namespace rec_impl {
+
+template <class... Types> struct Overload;
+
+template <>
+struct Overload<> { void operator()() const; };
+
+template <class Tp, class... Types>
+struct Overload<Tp, Types...> : Overload<Types...> {
+  using Overload<Types...>::operator();
+  auto operator()(Tp, Tp) const -> ID<Tp>;
+};
+
+template <class... Types>
+using Overloads = Overload<Types...>;
+
+} // namespace rec_impl
+
+namespace variant_impl {
+  template <class ...Types>
+  using Overloads = std::__variant_detail::_MakeOverloads<Types...>;
+} // naamespace variant_impl
+
+#ifndef TEST_NS
+#error TEST_NS must be defined
+#endif
+
+#define TEST_TYPE() TestType< __COUNTER__ >,
+using T1 = TEST_NS::Overloads<REPEAT_1000(TEST_TYPE) TestType<1>, TestType<1>, int>;
+static_assert(__COUNTER__ >= 1000, "");
+
+void fn1(T1 x) { DoNotOptimize(&x); }
+void fn2(typename std::invoke_result_t<T1, int, int>::type x) { DoNotOptimize(&x); }
+
+int main(int, char**) {
+  DoNotOptimize(&fn1);
+  DoNotOptimize(&fn2);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/version.pass.cpp
new file mode 100644
index 0000000..18f7536
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/meta/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <type_traits>
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/block.objc.pass.mm b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/block.objc.pass.mm
new file mode 100644
index 0000000..e8ff3a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/block.objc.pass.mm
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// REQUIRES: has-fblocks
+// ADDITIONAL_COMPILE_FLAGS: -fblocks
+
+// <optional>
+
+// This test makes sure that we can create a `std::optional` containing
+// an Objective-C++ block.
+
+#include <optional>
+#include <cassert>
+
+int main(int, char**)
+{
+    using Block = void (^)(void);
+    std::optional<Block> block;
+    assert(!block);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.assign/copy.pass.cpp
new file mode 100644
index 0000000..9df3abb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.assign/copy.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// optional<T>& operator=(const optional<T>& rhs);
+
+#include <optional>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {};
+
+struct Y
+{
+    Y() = default;
+    Y& operator=(const Y&) { return *this; }
+};
+
+struct Z1
+{
+    Z1() = default;
+    Z1(Z1&&) = default;
+    Z1(const Z1&) = default;
+    Z1& operator=(Z1&&) = default;
+    Z1& operator=(const Z1&) = delete;
+};
+
+struct Z2
+{
+    Z2() = default;
+    Z2(Z2&&) = default;
+    Z2(const Z2&) = delete;
+    Z2& operator=(Z2&&) = default;
+    Z2& operator=(const Z2&) = default;
+};
+
+template <class T>
+constexpr bool
+test()
+{
+    optional<T> opt;
+    optional<T> opt2;
+    opt = opt2;
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+        using T = int;
+        static_assert((std::is_trivially_copy_assignable<optional<T>>::value), "");
+        static_assert(test<T>(), "");
+    }
+    {
+        using T = X;
+        static_assert((std::is_trivially_copy_assignable<optional<T>>::value), "");
+        static_assert(test<T>(), "");
+    }
+    static_assert(!(std::is_trivially_copy_assignable<optional<Y>>::value), "");
+    static_assert(!(std::is_trivially_copy_assignable<optional<std::string>>::value), "");
+
+    static_assert(!(std::is_copy_assignable<optional<Z1>>::value), "");
+    static_assert(!(std::is_copy_assignable<optional<Z2>>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.assign/move.pass.cpp
new file mode 100644
index 0000000..f0d7e68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.assign/move.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// optional<T>& operator=(optional<T>&& rhs);
+
+#include <optional>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {};
+
+struct Y
+{
+    Y() = default;
+    Y& operator=(Y&&) { return *this; }
+};
+
+struct Z1
+{
+    Z1() = default;
+    Z1(Z1&&) = default;
+    Z1& operator=(Z1&&) = delete;
+};
+
+struct Z2
+{
+    Z2() = default;
+    Z2(Z2&&) = delete;
+    Z2& operator=(Z2&&) = default;
+};
+
+template <class T>
+constexpr bool
+test()
+{
+    optional<T> opt;
+    optional<T> opt2;
+    opt = std::move(opt2);
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+        using T = int;
+        static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
+        static_assert(test<T>(), "");
+    }
+    {
+        using T = X;
+        static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
+        static_assert(test<T>(), "");
+    }
+    static_assert(!(std::is_trivially_move_assignable<optional<Y>>::value), "");
+    static_assert(!(std::is_trivially_move_assignable<optional<std::string>>::value), "");
+
+    static_assert(!(std::is_move_assignable<optional<Z1>>::value), "");
+    static_assert(!(std::is_move_assignable<optional<Z2>>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
new file mode 100644
index 0000000..38f611b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// optional(const optional<T>& rhs);
+
+#include <optional>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {};
+
+struct Y
+{
+    Y() = default;
+    Y(const Y&) {}
+};
+
+struct Z
+{
+    Z() = default;
+    Z(Z&&) = delete;
+    Z(const Z&) = delete;
+    Z& operator=(Z&&) = delete;
+    Z& operator=(const Z&) = delete;
+};
+
+int main(int, char**)
+{
+    {
+        using T = int;
+        static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
+        constexpr optional<T> opt;
+        constexpr optional<T> opt2 = opt;
+        (void)opt2;
+    }
+    {
+        using T = X;
+        static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
+        constexpr optional<T> opt;
+        constexpr optional<T> opt2 = opt;
+        (void)opt2;
+    }
+    static_assert(!(std::is_trivially_copy_constructible<optional<Y>>::value), "");
+    static_assert(!(std::is_trivially_copy_constructible<optional<std::string>>::value), "");
+
+    static_assert(!(std::is_copy_constructible<optional<Z>>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp
new file mode 100644
index 0000000..76b7b9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// optional(optional<T>&& rhs);
+
+#include <optional>
+#include <string>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {};
+
+struct Y
+{
+    Y() = default;
+    Y(Y&&) {}
+};
+
+struct Z
+{
+    Z() = default;
+    Z(Z&&) = delete;
+    Z(const Z&) = delete;
+    Z& operator=(Z&&) = delete;
+    Z& operator=(const Z&) = delete;
+};
+
+int main(int, char**)
+{
+    {
+        using T = int;
+        static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
+        constexpr optional<T> opt;
+        constexpr optional<T> opt2 = std::move(opt);
+        (void)opt2;
+    }
+    {
+        using T = X;
+        static_assert((std::is_trivially_copy_constructible<optional<T>>::value), "");
+        constexpr optional<T> opt;
+        constexpr optional<T> opt2 = std::move(opt);
+        (void)opt2;
+    }
+    static_assert(!(std::is_trivially_move_constructible<optional<Y>>::value), "");
+    static_assert(!(std::is_trivially_move_constructible<optional<std::string>>::value), "");
+
+    static_assert(!(std::is_move_constructible<optional<Z>>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.observe/assert.dereference.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.observe/assert.dereference.pass.cpp
new file mode 100644
index 0000000..068b2e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.observe/assert.dereference.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <optional>
+
+// constexpr T& optional<T>::operator*() &;
+// constexpr T&& optional<T>::operator*() &&;
+// constexpr const T& optional<T>::operator*() const &;
+// constexpr T&& optional<T>::operator*() const &&;
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <optional>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    // &
+    {
+        std::optional<int> opt;
+        TEST_LIBCPP_ASSERT_FAILURE(*opt, "optional operator* called on a disengaged value");
+    }
+
+    // &&
+    {
+        std::optional<int> opt;
+        TEST_LIBCPP_ASSERT_FAILURE(*std::move(opt), "optional operator* called on a disengaged value");
+    }
+
+    // const &
+    {
+        const std::optional<int> opt;
+        TEST_LIBCPP_ASSERT_FAILURE(*opt, "optional operator* called on a disengaged value");
+    }
+
+    // const &&
+    {
+        const std::optional<int> opt;
+        TEST_LIBCPP_ASSERT_FAILURE(*std::move(opt), "optional operator* called on a disengaged value");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.observe/assert.op_arrow.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.observe/assert.op_arrow.pass.cpp
new file mode 100644
index 0000000..dc3eda8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/optional.object.observe/assert.op_arrow.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <optional>
+
+// constexpr T* optional<T>::operator->();
+// constexpr const T* optional<T>::operator->() const;
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <optional>
+
+#include "check_assertion.h"
+
+struct X {
+    int test() const { return 3; }
+};
+
+int main(int, char**) {
+    {
+        std::optional<X> opt;
+        TEST_LIBCPP_ASSERT_FAILURE(opt->test(), "optional operator-> called on a disengaged value");
+    }
+
+    {
+        const std::optional<X> opt;
+        TEST_LIBCPP_ASSERT_FAILURE(opt->test(), "optional operator-> called on a disengaged value");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/triviality.abi.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/triviality.abi.pass.cpp
new file mode 100644
index 0000000..7d86878
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/optional.object/triviality.abi.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// This test asserts the triviality of special member functions of optional<T>
+// whenever T has these special member functions trivial. The goal of this test
+// is to make sure that we do not change the triviality of those, since that
+// constitutes an ABI break (small enough optionals would be passed by registers).
+//
+// constexpr optional(const optional& rhs);
+// constexpr optional(optional&& rhs) noexcept(see below);
+// constexpr optional<T>& operator=(const optional& rhs);
+// constexpr optional<T>& operator=(optional&& rhs) noexcept(see below);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "archetypes.h"
+
+#include "test_macros.h"
+
+template <class T>
+struct SpecialMemberTest {
+    using O = std::optional<T>;
+
+    static_assert(std::is_trivially_destructible_v<O> ==
+        std::is_trivially_destructible_v<T>,
+        "optional<T> is trivially destructible if and only if T is.");
+
+    static_assert(std::is_trivially_copy_constructible_v<O> ==
+        std::is_trivially_copy_constructible_v<T>,
+        "optional<T> is trivially copy constructible if and only if T is.");
+
+    static_assert(std::is_trivially_move_constructible_v<O> ==
+        std::is_trivially_move_constructible_v<T> ||
+        (!std::is_move_constructible_v<T> && std::is_trivially_copy_constructible_v<T>),
+        "optional<T> is trivially move constructible if T is trivially move constructible, "
+        "or if T is trivially copy constructible and is not move constructible.");
+
+    static_assert(std::is_trivially_copy_assignable_v<O> ==
+        (std::is_trivially_destructible_v<T> &&
+         std::is_trivially_copy_constructible_v<T> &&
+         std::is_trivially_copy_assignable_v<T>),
+        "optional<T> is trivially copy assignable if and only if T is trivially destructible, "
+        "trivially copy constructible, and trivially copy assignable.");
+
+    static_assert(std::is_trivially_move_assignable_v<O> ==
+        (std::is_trivially_destructible_v<T> &&
+         ((std::is_trivially_move_constructible_v<T> && std::is_trivially_move_assignable_v<T>) ||
+          ((!std::is_move_constructible_v<T> || !std::is_move_assignable_v<T>) &&
+           std::is_trivially_copy_constructible_v<T> && std::is_trivially_copy_assignable_v<T>))),
+        "optional<T> is trivially move assignable if T is trivially destructible, and either "
+        "(1) trivially move constructible and trivially move assignable, or "
+        "(2) not move constructible or not move assignable, and "
+        "trivially copy constructible and trivially copy assignable.");
+};
+
+template <class ...Args> static void sink(Args&&...) {}
+
+template <class ...TestTypes>
+struct DoTestsMetafunction {
+    DoTestsMetafunction() { sink(SpecialMemberTest<TestTypes>{}...); }
+};
+
+struct TrivialMoveNonTrivialCopy {
+    TrivialMoveNonTrivialCopy() = default;
+    TrivialMoveNonTrivialCopy(const TrivialMoveNonTrivialCopy&) {}
+    TrivialMoveNonTrivialCopy(TrivialMoveNonTrivialCopy&&) = default;
+    TrivialMoveNonTrivialCopy& operator=(const TrivialMoveNonTrivialCopy&) { return *this; }
+    TrivialMoveNonTrivialCopy& operator=(TrivialMoveNonTrivialCopy&&) = default;
+};
+
+struct TrivialCopyNonTrivialMove {
+    TrivialCopyNonTrivialMove() = default;
+    TrivialCopyNonTrivialMove(const TrivialCopyNonTrivialMove&) = default;
+    TrivialCopyNonTrivialMove(TrivialCopyNonTrivialMove&&) {}
+    TrivialCopyNonTrivialMove& operator=(const TrivialCopyNonTrivialMove&) = default;
+    TrivialCopyNonTrivialMove& operator=(TrivialCopyNonTrivialMove&&) { return *this; }
+};
+
+int main(int, char**)
+{
+    sink(
+        ImplicitTypes::ApplyTypes<DoTestsMetafunction>{},
+        ExplicitTypes::ApplyTypes<DoTestsMetafunction>{},
+        NonLiteralTypes::ApplyTypes<DoTestsMetafunction>{},
+        NonTrivialTypes::ApplyTypes<DoTestsMetafunction>{},
+        DoTestsMetafunction<TrivialMoveNonTrivialCopy, TrivialCopyNonTrivialMove>{}
+    );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/version.pass.cpp
new file mode 100644
index 0000000..315e884
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/optional/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <optional>
+
+#include <optional>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/ratio/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/ratio/version.pass.cpp
new file mode 100644
index 0000000..26514b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/ratio/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ratio>
+
+#include <ratio>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/template.bitset/includes.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/template.bitset/includes.pass.cpp
new file mode 100644
index 0000000..42deaaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/template.bitset/includes.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test that <bitset> includes <cstddef>, <string>, <stdexcept> and <iosfwd>
+
+#include <bitset>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_CSTDDEF
+#error <cstddef> has not been included
+#endif
+
+#ifndef _LIBCPP_STRING
+#error <string> has not been included
+#endif
+
+#ifndef _LIBCPP_STDEXCEPT
+#error <stdexcept> has not been included
+#endif
+
+#ifndef _LIBCPP_IOSFWD
+#error <iosfwd> has not been included
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/template.bitset/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/template.bitset/version.pass.cpp
new file mode 100644
index 0000000..e055895
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/template.bitset/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <bitset>
+
+#include <bitset>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/empty_member.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/empty_member.pass.cpp
new file mode 100644
index 0000000..ee47e62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/empty_member.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// UNSUPPORTED: c++03
+
+// This is not a portable test
+
+#include <tuple>
+
+#include "test_macros.h"
+
+struct A {};
+
+struct B {};
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<int, A> T;
+        static_assert((sizeof(T) == sizeof(int)), "");
+    }
+    {
+        typedef std::tuple<A, int> T;
+        static_assert((sizeof(T) == sizeof(int)), "");
+    }
+    {
+        typedef std::tuple<A, int, B> T;
+        static_assert((sizeof(T) == sizeof(int)), "");
+    }
+    {
+        typedef std::tuple<A, B, int> T;
+        static_assert((sizeof(T) == sizeof(int)), "");
+    }
+    {
+        typedef std::tuple<int, A, B> T;
+        static_assert((sizeof(T) == sizeof(int)), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.assign/array.extension.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.assign/array.extension.pass.cpp
new file mode 100644
index 0000000..c7847e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.assign/array.extension.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// EXTENSION
+// template <class U, size_t N>
+//   tuple& operator=(const array<U, N>& u);
+//
+// template <class U, size_t N>
+//   tuple& operator=(array<U, N>&& u);
+
+// UNSUPPORTED: c++03
+
+#include <array>
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+
+template <class T>
+struct NothrowAssignableFrom {
+    NothrowAssignableFrom& operator=(T) noexcept { return *this; }
+};
+
+template <class T>
+struct PotentiallyThrowingAssignableFrom {
+    PotentiallyThrowingAssignableFrom& operator=(T) { return *this; }
+};
+
+int main(int, char**) {
+    // Tests for the array const& overload
+    {
+        std::array<long, 3> array = {1l, 2l, 3l};
+        std::tuple<int, int, int> tuple;
+        tuple = array;
+        assert(std::get<0>(tuple) == 1);
+        assert(std::get<1>(tuple) == 2);
+        assert(std::get<2>(tuple) == 3);
+    }
+    {
+        typedef std::tuple<NothrowAssignableFrom<int>> Tuple;
+        typedef std::array<int, 1> Array;
+        static_assert(std::is_nothrow_assignable<Tuple&, Array const&>::value, "");
+    }
+    {
+        typedef std::tuple<PotentiallyThrowingAssignableFrom<int>> Tuple;
+        typedef std::array<int, 1> Array;
+        static_assert(std::is_assignable<Tuple&, Array const&>::value, "");
+        static_assert(!std::is_nothrow_assignable<Tuple&, Array const&>::value, "");
+    }
+
+    // Tests for the array&& overload
+    {
+        std::array<long, 3> array = {1l, 2l, 3l};
+        std::tuple<int, int, int> tuple;
+        tuple = std::move(array);
+        assert(std::get<0>(tuple) == 1);
+        assert(std::get<1>(tuple) == 2);
+        assert(std::get<2>(tuple) == 3);
+    }
+    {
+        typedef std::tuple<NothrowAssignableFrom<int>> Tuple;
+        typedef std::array<int, 1> Array;
+        static_assert(std::is_nothrow_assignable<Tuple&, Array&&>::value, "");
+    }
+    {
+        typedef std::tuple<PotentiallyThrowingAssignableFrom<int>> Tuple;
+        typedef std::array<int, 1> Array;
+        static_assert(std::is_assignable<Tuple&, Array&&>::value, "");
+        static_assert(!std::is_nothrow_assignable<Tuple&, Array&&>::value, "");
+    }
+
+    // Test lvalue-refs and const rvalue-ref
+    {
+        typedef std::tuple<NothrowAssignableFrom<int>> Tuple;
+        typedef std::array<int, 1> Array;
+        static_assert(std::is_nothrow_assignable<Tuple&, Array&>::value, "");
+        static_assert(std::is_nothrow_assignable<Tuple&, const Array&&>::value, "");
+    }
+
+    {
+        typedef std::tuple<NothrowAssignableFrom<int>> Tuple;
+        static_assert(!std::is_assignable<Tuple&, std::array<long, 2>&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, std::array<long, 2>&&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, const std::array<long, 2>&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, const std::array<long, 2>&&>::value, "");
+
+        static_assert(!std::is_assignable<Tuple&, std::array<long, 4>&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, std::array<long, 4>&&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, const std::array<long, 4>&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, const std::array<long, 4>&&>::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.assign/tuple_array_template_depth.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.assign/tuple_array_template_depth.pass.cpp
new file mode 100644
index 0000000..3d4262f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.assign/tuple_array_template_depth.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Tuple, __tuple_assignable<Tuple, tuple> >
+//   tuple & operator=(Tuple &&);
+
+// This test checks that we do not evaluate __make_tuple_types
+// on the array when it doesn't match the size of the tuple.
+
+#include <array>
+#include <tuple>
+
+#include "test_macros.h"
+
+// Use 1256 to try and blow the template instantiation depth for all compilers.
+typedef std::array<char, 1256> array_t;
+typedef std::tuple<array_t> tuple_t;
+
+int main(int, char**)
+{
+    array_t arr;
+    tuple_t tup;
+    tup = arr;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.fail.cpp
new file mode 100644
index 0000000..2586c32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.fail.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// See llvm.org/PR20855
+
+#include <tuple>
+#include <string>
+
+#include "test_macros.h"
+
+template <class Tp>
+struct ConvertsTo {
+  using RawTp = typename std::remove_cv< typename std::remove_reference<Tp>::type>::type;
+
+  operator Tp() const {
+    return static_cast<Tp>(value);
+  }
+
+  mutable RawTp value;
+};
+
+struct Base {};
+struct Derived : Base {};
+
+template <class T> struct CannotDeduce {
+ using type = T;
+};
+
+template <class ...Args>
+void F(typename CannotDeduce<std::tuple<Args...>>::type const&) {}
+
+
+int main(int, char**) {
+#if TEST_HAS_BUILTIN_IDENTIFIER(__reference_binds_to_temporary)
+  // Test that we emit our diagnostic from the library.
+  // expected-error@tuple:* 8 {{Attempted construction of reference element binds to a temporary whose lifetime has ended}}
+
+  // Good news everybody! Clang now diagnoses this for us!
+  // expected-error@tuple:* 0+ {{reference member '__value_' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}}
+
+  {
+    F<int, const std::string&>(std::make_tuple(1, "abc")); // expected-note 1 {{requested here}}
+  }
+  {
+    std::tuple<int, const std::string&> t(1, "a"); // expected-note 1 {{requested here}}
+  }
+  {
+    F<int, const std::string&>(std::tuple<int, const std::string&>(1, "abc")); // expected-note 1 {{requested here}}
+  }
+  {
+    ConvertsTo<int&> ct;
+    std::tuple<const long&, int> t(ct, 42); // expected-note {{requested here}}
+  }
+  {
+    ConvertsTo<int> ct;
+    std::tuple<int const&, void*> t(ct, nullptr); // expected-note {{requested here}}
+  }
+  {
+    ConvertsTo<Derived> ct;
+    std::tuple<Base const&, int> t(ct, 42); // expected-note {{requested here}}
+  }
+  {
+    std::allocator<int> alloc;
+    std::tuple<std::string &&> t2("hello"); // expected-note {{requested here}}
+    std::tuple<std::string &&> t3(std::allocator_arg, alloc, "hello"); // expected-note {{requested here}}
+  }
+#else
+#error force failure
+// expected-error@-1 {{force failure}}
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/version.pass.cpp
new file mode 100644
index 0000000..1a13410
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/tuple/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+#include <tuple>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/type.index/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/type.index/version.pass.cpp
new file mode 100644
index 0000000..aa549fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/type.index/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+#include <typeindex>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__is_inplace_index.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__is_inplace_index.pass.cpp
new file mode 100644
index 0000000..e26f515
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__is_inplace_index.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class _Tp> using __is_inplace_index
+
+#include <utility>
+
+#include "test_macros.h"
+
+struct S {};
+
+int main(int, char**) {
+  using I = std::in_place_index_t<0>;
+  static_assert( std::__is_inplace_index<I>::value, "");
+  static_assert( std::__is_inplace_index<const I>::value, "");
+  static_assert( std::__is_inplace_index<const volatile I>::value, "");
+  static_assert( std::__is_inplace_index<I&>::value, "");
+  static_assert( std::__is_inplace_index<const I&>::value, "");
+  static_assert( std::__is_inplace_index<const volatile I&>::value, "");
+  static_assert( std::__is_inplace_index<I&&>::value, "");
+  static_assert( std::__is_inplace_index<const I&&>::value, "");
+  static_assert( std::__is_inplace_index<const volatile I&&>::value, "");
+  static_assert(!std::__is_inplace_index<std::in_place_type_t<int>>::value, "");
+  static_assert(!std::__is_inplace_index<std::in_place_t>::value, "");
+  static_assert(!std::__is_inplace_index<void>::value, "");
+  static_assert(!std::__is_inplace_index<int>::value, "");
+  static_assert(!std::__is_inplace_index<S>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__is_inplace_type.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__is_inplace_type.pass.cpp
new file mode 100644
index 0000000..1179067
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__is_inplace_type.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class _Tp> using __is_inplace_type
+
+#include <utility>
+
+#include "test_macros.h"
+
+struct S {};
+
+int main(int, char**) {
+  using T = std::in_place_type_t<int>;
+  static_assert( std::__is_inplace_type<T>::value, "");
+  static_assert( std::__is_inplace_type<const T>::value, "");
+  static_assert( std::__is_inplace_type<const volatile T>::value, "");
+  static_assert( std::__is_inplace_type<T&>::value, "");
+  static_assert( std::__is_inplace_type<const T&>::value, "");
+  static_assert( std::__is_inplace_type<const volatile T&>::value, "");
+  static_assert( std::__is_inplace_type<T&&>::value, "");
+  static_assert( std::__is_inplace_type<const T&&>::value, "");
+  static_assert( std::__is_inplace_type<const volatile T&&>::value, "");
+  static_assert(!std::__is_inplace_type<std::in_place_index_t<0>>::value, "");
+  static_assert(!std::__is_inplace_type<std::in_place_t>::value, "");
+  static_assert(!std::__is_inplace_type<void>::value, "");
+  static_assert(!std::__is_inplace_type<int>::value, "");
+  static_assert(!std::__is_inplace_type<S>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__murmur2_or_cityhash.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__murmur2_or_cityhash.pass.cpp
new file mode 100644
index 0000000..e2905a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/__murmur2_or_cityhash.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test the CityHash implementation is correct.
+
+// UNSUPPORTED: c++03
+
+#include <cassert>
+#include <string>
+#include <utility>
+
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#  define CHOOSE_BY_ENDIANESS(little, big) (little)
+#else
+#  define CHOOSE_BY_ENDIANESS(little, big) (big)
+#endif
+
+std::string CityHash[] = {
+    {/* "abcdefgh" */ "\x61\x62\x63\x64\x65\x66\x67\x68"},
+    {/* "abcDefgh" */ "\x61\x62\x63\x44\x65\x66\x67\x68"},
+    {/* "CityHash" */ "\x43\x69\x74\x79\x48\x61\x73\x68"},
+    {/* "CitYHash" */ "\x43\x69\x74\x59\x48\x61\x73\x68"},
+};
+
+int main(int, char**) {
+  const std::pair<std::string, uint64_t> TestCases[] = {
+      {CityHash[0], CHOOSE_BY_ENDIANESS(0x4382a8d0fe8edb17ULL, 0xca84e809bef16fbcULL)},
+      {CityHash[1], CHOOSE_BY_ENDIANESS(0xecefb080a6854061ULL, 0xd7feb824250272dcULL)},
+      {CityHash[2], CHOOSE_BY_ENDIANESS(0x169ea3aebf908d6dULL, 0xea8cef3ca6f6e368ULL)},
+      {CityHash[3], CHOOSE_BY_ENDIANESS(0xe18298a2760f09faULL, 0xf33a7700bb7a94a8ULL)},
+  };
+
+  std::__murmur2_or_cityhash<uint64_t> h64;
+  for (const auto& test_case : TestCases) {
+    assert(h64(test_case.first.data(), test_case.first.size()) == test_case.second);
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/forward/lifetimebound.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/forward/lifetimebound.verify.cpp
new file mode 100644
index 0000000..4381c3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/forward/lifetimebound.verify.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -Wno-pessimizing-move -Wno-unused-variable
+
+#include <utility>
+
+#include "test_macros.h"
+
+struct S {
+  const int& func() [[clang::lifetimebound]];
+};
+
+void func() {
+  auto&& v1 = std::move(int{});                              // expected-warning {{temporary bound to local reference 'v1' will be destroyed at the end of the full-expression}}
+  auto&& v2 = std::forward<int&&>(int{});                    // expected-warning {{temporary bound to local reference 'v2' will be destroyed at the end of the full-expression}}
+  auto&& v3 = std::forward<const int&>(S{}.func());          // expected-warning {{temporary bound to local reference 'v3' will be destroyed at the end of the full-expression}}
+  auto&& v4 = std::move_if_noexcept<const int&>(S{}.func()); // expected-warning {{temporary bound to local reference 'v4' will be destroyed at the end of the full-expression}}
+#if TEST_STD_VER >= 23
+  auto&& v5 = std::forward_like<int&&>(int{});               // expected-warning {{temporary bound to local reference 'v5' will be destroyed at the end of the full-expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_vocabulary.attributes.verify.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_vocabulary.attributes.verify.cpp
new file mode 100644
index 0000000..d5cd62e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_vocabulary.attributes.verify.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// check that clang warns on non-power-of-two alignment
+
+#include <memory_resource>
+
+void func() {
+  std::pmr::polymorphic_allocator<> allocator;
+  (void)allocator.allocate_bytes(0, 3); // expected-warning {{requested alignment is not a power of 2}}
+
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair.pass.cpp
new file mode 100644
index 0000000..28884a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<T1, T2>*, piecewise_construct_t
+//                                          tuple<Args1...> x, tuple<Args2...>)
+
+// The stardard specifiers a tranformation to uses-allocator construction as
+// follows:
+//  - If uses_allocator_v<T1,memory_resource*> is false and
+//      is_constructible_v<T,Args1...> is true, then xprime is x.
+//  - Otherwise, if uses_allocator_v<T1,memory_resource*> is true and
+//      is_constructible_v<T1,allocator_arg_t,memory_resource*,Args1...> is true,
+//      then xprime is
+//      tuple_cat(make_tuple(allocator_arg, this->resource()), std::move(x)).
+//  - Otherwise, if uses_allocator_v<T1,memory_resource*> is true and
+//      is_constructible_v<T1,Args1...,memory_resource*> is true, then xprime is
+//      tuple_cat(std::move(x), make_tuple(this->resource())).
+//  - Otherwise the program is ill formed.
+//
+// The use of "xprime = tuple_cat(..., std::move(x), ...)" causes all of the
+// objects in 'x' to be copied into 'xprime'. If 'x' contains any types which
+// are stored by value this causes an unessary copy to occur. To prevent this
+//  libc++ changes this call into
+// "xprime = forward_as_tuple(..., std::get<Idx>(std::move(x))..., ...)".
+// 'xprime' contains references to the values in 'x' instead of copying them.
+
+// This test checks the number of copies incurred to the elements in
+// 'tuple<Args1...>' and 'tuple<Args2...>'.
+
+#include <memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "test_std_memory_resource.h"
+
+template <class T>
+struct TestHarness {
+  TestResource R;
+  std::pmr::memory_resource* M         = &R;
+  std::pmr::polymorphic_allocator<T> A = M;
+  bool constructed                     = false;
+  T* ptr;
+
+  TestHarness() : ptr(A.allocate(1)) {}
+
+  template <class... Args>
+  void construct(Args&&... args) {
+    A.construct(ptr, std::forward<Args>(args)...);
+    constructed = true;
+  }
+
+  ~TestHarness() {
+    if (constructed)
+      A.destroy(ptr);
+    A.deallocate(ptr, 1);
+  }
+};
+
+struct CountCopies {
+  int count;
+  CountCopies() : count(0) {}
+  CountCopies(CountCopies const& o) : count(o.count + 1) {}
+};
+
+struct CountCopiesAllocV1 {
+  typedef std::pmr::polymorphic_allocator<char> allocator_type;
+  std::pmr::memory_resource* alloc;
+  int count;
+  CountCopiesAllocV1() : alloc(nullptr), count(0) {}
+  CountCopiesAllocV1(std::allocator_arg_t, allocator_type const& a, CountCopiesAllocV1 const& o)
+      : alloc(a.resource()), count(o.count + 1) {}
+
+  CountCopiesAllocV1(CountCopiesAllocV1 const& o) : count(o.count + 1) {}
+};
+
+struct CountCopiesAllocV2 {
+  typedef std::pmr::polymorphic_allocator<char> allocator_type;
+  std::pmr::memory_resource* alloc;
+  int count;
+  CountCopiesAllocV2() : alloc(nullptr), count(0) {}
+  CountCopiesAllocV2(CountCopiesAllocV2 const& o, allocator_type const& a) : alloc(a.resource()), count(o.count + 1) {}
+
+  CountCopiesAllocV2(CountCopiesAllocV2 const& o) : count(o.count + 1) {}
+};
+
+int main(int, char**) {
+  {
+    using T = CountCopies;
+    using U = CountCopiesAllocV1;
+    using P = std::pair<T, U>;
+
+    std::tuple<T> t1;
+    std::tuple<U> t2;
+
+    TestHarness<P> h;
+    h.construct(std::piecewise_construct, t1, t2);
+    P const& p = *h.ptr;
+    assert(p.first.count == 2);
+    assert(p.second.count == 2);
+    assert(p.second.alloc == h.M);
+  }
+  {
+    using T = CountCopiesAllocV1;
+    using U = CountCopiesAllocV2;
+    using P = std::pair<T, U>;
+
+    std::tuple<T> t1;
+    std::tuple<U> t2;
+
+    TestHarness<P> h;
+    h.construct(std::piecewise_construct, std::move(t1), std::move(t2));
+    P const& p = *h.ptr;
+    assert(p.first.count == 2);
+    assert(p.first.alloc == h.M);
+    assert(p.second.count == 2);
+    assert(p.second.alloc == h.M);
+  }
+  {
+    using T = CountCopiesAllocV2;
+    using U = CountCopiesAllocV1;
+    using P = std::pair<T, U>;
+
+    std::tuple<T> t1;
+    std::tuple<U> t2;
+
+    TestHarness<P> h;
+    h.construct(std::piecewise_construct, std::move(t1), std::move(t2));
+    P const& p = *h.ptr;
+    assert(p.first.count == 2);
+    assert(p.first.alloc == h.M);
+    assert(p.second.count == 2);
+    assert(p.second.alloc == h.M);
+  }
+  {
+    using T = CountCopiesAllocV2;
+    using U = CountCopies;
+    using P = std::pair<T, U>;
+
+    std::tuple<T> t1;
+    std::tuple<U> t2;
+
+    TestHarness<P> h;
+    h.construct(std::piecewise_construct, t1, t2);
+    P const& p = *h.ptr;
+    assert(p.first.count == 2);
+    assert(p.first.alloc == h.M);
+    assert(p.second.count == 2);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/debug.deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/debug.deallocate.pass.cpp
new file mode 100644
index 0000000..3602ba9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/debug.deallocate.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !libcpp-has-debug-mode, c++03, c++11, c++14
+// REQUIRES: has-unix-headers
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::deallocate(T*, size_t size)
+
+int AssertCount = 0;
+
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  using Alloc  = std::pmr::polymorphic_allocator<int>;
+  using Traits = std::allocator_traits<Alloc>;
+  NullResource R;
+  Alloc a(&R);
+  const std::size_t maxSize = Traits::max_size(a);
+
+  a.deallocate(nullptr, maxSize); // no assertion
+  TEST_LIBCPP_ASSERT_FAILURE(a.deallocate(nullptr, maxSize + 1), "deallocate called for size which exceeds max_size()");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_underaligned_buffer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_underaligned_buffer.pass.cpp
new file mode 100644
index 0000000..a997435
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_underaligned_buffer.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <cassert>
+#include <memory_resource>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  {
+    alignas(4) char buffer[17];
+    auto mono1                    = std::pmr::monotonic_buffer_resource(buffer, 16, std::pmr::new_delete_resource());
+    std::pmr::memory_resource& r1 = mono1;
+
+    void* ret = r1.allocate(1, 1);
+    assert(ret == buffer + 15);
+    mono1.release();
+
+    ret = r1.allocate(1, 2);
+    assert(ret == buffer + 14);
+    mono1.release();
+
+    ret = r1.allocate(1, 4);
+    assert(ret == buffer + 12);
+    mono1.release();
+
+    // Test a size that is just big enough to fit in the buffer,
+    // but can't fit if it's aligned.
+    {
+      auto mono2 = std::pmr::monotonic_buffer_resource(buffer + 1, 16, std::pmr::new_delete_resource());
+      std::pmr::memory_resource& r2 = mono2;
+      ret                           = r2.allocate(16, 1);
+      assert(ret == buffer + 1);
+      mono2.release();
+
+      assert(globalMemCounter.checkNewCalledEq(0));
+      ret = r2.allocate(16, 2);
+      ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+      ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewSizeGe(16));
+      mono2.release();
+      ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_in_geometric_progression.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_in_geometric_progression.pass.cpp
new file mode 100644
index 0000000..4b9160c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_in_geometric_progression.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  std::pmr::monotonic_buffer_resource mono;
+
+  for (int i = 0; i < 100; ++i) {
+    (void)mono.allocate(1);
+    assert(globalMemCounter.last_new_size < 1000000000);
+    mono.release();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.pool/unsynchronized_buffer.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.pool/unsynchronized_buffer.pass.cpp
new file mode 100644
index 0000000..84f11f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/mem.res/mem.res.pool/unsynchronized_buffer.pass.cpp
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// struct pool_options
+// class unsynchronized_pool_resource
+// class synchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <cstdint> // SIZE_MAX, UINT32_MAX
+
+static void assert_options(const std::pmr::pool_options& actual, const std::pmr::pool_options& expected) {
+  assert(actual.max_blocks_per_chunk == expected.max_blocks_per_chunk);
+  assert(actual.largest_required_pool_block == expected.largest_required_pool_block);
+}
+
+void test_pool_options(std::pmr::pool_options initial, std::pmr::pool_options expected) {
+  std::pmr::unsynchronized_pool_resource mr(initial, std::pmr::null_memory_resource());
+  assert_options(mr.options(), expected);
+
+  std::pmr::synchronized_pool_resource mr2(initial, std::pmr::null_memory_resource());
+  assert_options(mr2.options(), expected);
+}
+
+int main(int, char**) {
+  test_pool_options({0, 0}, {1048576, 1048576});
+  test_pool_options({0, 1}, {1048576, 8});
+  test_pool_options({0, 2}, {1048576, 8});
+  test_pool_options({0, 4}, {1048576, 8});
+  test_pool_options({0, 8}, {1048576, 8});
+  test_pool_options({0, 16}, {1048576, 16});
+  test_pool_options({0, 32}, {1048576, 32});
+  test_pool_options({0, 1024}, {1048576, 1024});
+  test_pool_options({0, 1048576}, {1048576, 1048576});
+  test_pool_options({0, 2097152}, {1048576, 2097152});
+  test_pool_options({0, 1073741824}, {1048576, 1073741824});
+  test_pool_options({0, 2147483648}, {1048576, 1073741824});
+  test_pool_options({1, 0}, {16, 1048576});
+  test_pool_options({1, 1}, {16, 8});
+  test_pool_options({1, 2}, {16, 8});
+  test_pool_options({1, 4}, {16, 8});
+  test_pool_options({1, 8}, {16, 8});
+  test_pool_options({1, 16}, {16, 16});
+  test_pool_options({1, 32}, {16, 32});
+  test_pool_options({1, 1024}, {16, 1024});
+  test_pool_options({1, 1048576}, {16, 1048576});
+  test_pool_options({1, 2097152}, {16, 2097152});
+  test_pool_options({1, 1073741824}, {16, 1073741824});
+  test_pool_options({1, 2147483648}, {16, 1073741824});
+  test_pool_options({2, 0}, {16, 1048576});
+  test_pool_options({2, 1}, {16, 8});
+  test_pool_options({2, 2}, {16, 8});
+  test_pool_options({2, 4}, {16, 8});
+  test_pool_options({2, 8}, {16, 8});
+  test_pool_options({2, 16}, {16, 16});
+  test_pool_options({2, 32}, {16, 32});
+  test_pool_options({2, 1024}, {16, 1024});
+  test_pool_options({2, 1048576}, {16, 1048576});
+  test_pool_options({2, 2097152}, {16, 2097152});
+  test_pool_options({2, 1073741824}, {16, 1073741824});
+  test_pool_options({2, 2147483648}, {16, 1073741824});
+  test_pool_options({4, 0}, {16, 1048576});
+  test_pool_options({4, 1}, {16, 8});
+  test_pool_options({4, 2}, {16, 8});
+  test_pool_options({4, 4}, {16, 8});
+  test_pool_options({4, 8}, {16, 8});
+  test_pool_options({4, 16}, {16, 16});
+  test_pool_options({4, 32}, {16, 32});
+  test_pool_options({4, 1024}, {16, 1024});
+  test_pool_options({4, 1048576}, {16, 1048576});
+  test_pool_options({4, 2097152}, {16, 2097152});
+  test_pool_options({4, 1073741824}, {16, 1073741824});
+  test_pool_options({4, 2147483648}, {16, 1073741824});
+  test_pool_options({8, 0}, {16, 1048576});
+  test_pool_options({8, 1}, {16, 8});
+  test_pool_options({8, 2}, {16, 8});
+  test_pool_options({8, 4}, {16, 8});
+  test_pool_options({8, 8}, {16, 8});
+  test_pool_options({8, 16}, {16, 16});
+  test_pool_options({8, 32}, {16, 32});
+  test_pool_options({8, 1024}, {16, 1024});
+  test_pool_options({8, 1048576}, {16, 1048576});
+  test_pool_options({8, 2097152}, {16, 2097152});
+  test_pool_options({8, 1073741824}, {16, 1073741824});
+  test_pool_options({8, 2147483648}, {16, 1073741824});
+  test_pool_options({16, 0}, {16, 1048576});
+  test_pool_options({16, 1}, {16, 8});
+  test_pool_options({16, 2}, {16, 8});
+  test_pool_options({16, 4}, {16, 8});
+  test_pool_options({16, 8}, {16, 8});
+  test_pool_options({16, 16}, {16, 16});
+  test_pool_options({16, 32}, {16, 32});
+  test_pool_options({16, 1024}, {16, 1024});
+  test_pool_options({16, 1048576}, {16, 1048576});
+  test_pool_options({16, 2097152}, {16, 2097152});
+  test_pool_options({16, 1073741824}, {16, 1073741824});
+  test_pool_options({16, 2147483648}, {16, 1073741824});
+  test_pool_options({32, 0}, {32, 1048576});
+  test_pool_options({32, 1}, {32, 8});
+  test_pool_options({32, 2}, {32, 8});
+  test_pool_options({32, 4}, {32, 8});
+  test_pool_options({32, 8}, {32, 8});
+  test_pool_options({32, 16}, {32, 16});
+  test_pool_options({32, 32}, {32, 32});
+  test_pool_options({32, 1024}, {32, 1024});
+  test_pool_options({32, 1048576}, {32, 1048576});
+  test_pool_options({32, 2097152}, {32, 2097152});
+  test_pool_options({32, 1073741824}, {32, 1073741824});
+  test_pool_options({32, 2147483648}, {32, 1073741824});
+  test_pool_options({1024, 0}, {1024, 1048576});
+  test_pool_options({1024, 1}, {1024, 8});
+  test_pool_options({1024, 2}, {1024, 8});
+  test_pool_options({1024, 4}, {1024, 8});
+  test_pool_options({1024, 8}, {1024, 8});
+  test_pool_options({1024, 16}, {1024, 16});
+  test_pool_options({1024, 32}, {1024, 32});
+  test_pool_options({1024, 1024}, {1024, 1024});
+  test_pool_options({1024, 1048576}, {1024, 1048576});
+  test_pool_options({1024, 2097152}, {1024, 2097152});
+  test_pool_options({1024, 1073741824}, {1024, 1073741824});
+  test_pool_options({1024, 2147483648}, {1024, 1073741824});
+  test_pool_options({1048576, 0}, {1048576, 1048576});
+  test_pool_options({1048576, 1}, {1048576, 8});
+  test_pool_options({1048576, 2}, {1048576, 8});
+  test_pool_options({1048576, 4}, {1048576, 8});
+  test_pool_options({1048576, 8}, {1048576, 8});
+  test_pool_options({1048576, 16}, {1048576, 16});
+  test_pool_options({1048576, 32}, {1048576, 32});
+  test_pool_options({1048576, 1024}, {1048576, 1024});
+  test_pool_options({1048576, 1048576}, {1048576, 1048576});
+  test_pool_options({1048576, 2097152}, {1048576, 2097152});
+  test_pool_options({1048576, 1073741824}, {1048576, 1073741824});
+  test_pool_options({1048576, 2147483648}, {1048576, 1073741824});
+  test_pool_options({2097152, 0}, {1048576, 1048576});
+  test_pool_options({2097152, 1}, {1048576, 8});
+  test_pool_options({2097152, 2}, {1048576, 8});
+  test_pool_options({2097152, 4}, {1048576, 8});
+  test_pool_options({2097152, 8}, {1048576, 8});
+  test_pool_options({2097152, 16}, {1048576, 16});
+  test_pool_options({2097152, 32}, {1048576, 32});
+  test_pool_options({2097152, 1024}, {1048576, 1024});
+  test_pool_options({2097152, 1048576}, {1048576, 1048576});
+  test_pool_options({2097152, 2097152}, {1048576, 2097152});
+  test_pool_options({2097152, 1073741824}, {1048576, 1073741824});
+  test_pool_options({2097152, 2147483648}, {1048576, 1073741824});
+  test_pool_options({1073741824, 0}, {1048576, 1048576});
+  test_pool_options({1073741824, 1}, {1048576, 8});
+  test_pool_options({1073741824, 2}, {1048576, 8});
+  test_pool_options({1073741824, 4}, {1048576, 8});
+  test_pool_options({1073741824, 8}, {1048576, 8});
+  test_pool_options({1073741824, 16}, {1048576, 16});
+  test_pool_options({1073741824, 32}, {1048576, 32});
+  test_pool_options({1073741824, 1024}, {1048576, 1024});
+  test_pool_options({1073741824, 1048576}, {1048576, 1048576});
+  test_pool_options({1073741824, 2097152}, {1048576, 2097152});
+  test_pool_options({1073741824, 1073741824}, {1048576, 1073741824});
+  test_pool_options({1073741824, 2147483648}, {1048576, 1073741824});
+  test_pool_options({2147483648, 0}, {1048576, 1048576});
+  test_pool_options({2147483648, 1}, {1048576, 8});
+  test_pool_options({2147483648, 2}, {1048576, 8});
+  test_pool_options({2147483648, 4}, {1048576, 8});
+  test_pool_options({2147483648, 8}, {1048576, 8});
+  test_pool_options({2147483648, 16}, {1048576, 16});
+  test_pool_options({2147483648, 32}, {1048576, 32});
+  test_pool_options({2147483648, 1024}, {1048576, 1024});
+  test_pool_options({2147483648, 1048576}, {1048576, 1048576});
+  test_pool_options({2147483648, 2097152}, {1048576, 2097152});
+  test_pool_options({2147483648, 1073741824}, {1048576, 1073741824});
+  test_pool_options({2147483648, 2147483648}, {1048576, 1073741824});
+
+#if SIZE_MAX > UINT32_MAX
+  test_pool_options({0, 8589934592}, {1048576, 1073741824});
+  test_pool_options({1, 8589934592}, {16, 1073741824});
+  test_pool_options({2, 8589934592}, {16, 1073741824});
+  test_pool_options({4, 8589934592}, {16, 1073741824});
+  test_pool_options({8, 8589934592}, {16, 1073741824});
+  test_pool_options({16, 8589934592}, {16, 1073741824});
+  test_pool_options({32, 8589934592}, {32, 1073741824});
+  test_pool_options({1024, 8589934592}, {1024, 1073741824});
+  test_pool_options({1048576, 8589934592}, {1048576, 1073741824});
+  test_pool_options({2097152, 8589934592}, {1048576, 1073741824});
+  test_pool_options({1073741824, 8589934592}, {1048576, 1073741824});
+  test_pool_options({2147483648, 8589934592}, {1048576, 1073741824});
+  test_pool_options({8589934592, 0}, {1048576, 1048576});
+  test_pool_options({8589934592, 1}, {1048576, 8});
+  test_pool_options({8589934592, 2}, {1048576, 8});
+  test_pool_options({8589934592, 4}, {1048576, 8});
+  test_pool_options({8589934592, 8}, {1048576, 8});
+  test_pool_options({8589934592, 16}, {1048576, 16});
+  test_pool_options({8589934592, 32}, {1048576, 32});
+  test_pool_options({8589934592, 1024}, {1048576, 1024});
+  test_pool_options({8589934592, 1048576}, {1048576, 1048576});
+  test_pool_options({8589934592, 2097152}, {1048576, 2097152});
+  test_pool_options({8589934592, 1073741824}, {1048576, 1073741824});
+  test_pool_options({8589934592, 2147483648}, {1048576, 1073741824});
+  test_pool_options({8589934592, 8589934592}, {1048576, 1073741824});
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/U_V.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/U_V.pass.cpp
new file mode 100644
index 0000000..98363b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/U_V.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<class U, class V> pair(U&& x, V&& y);
+
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+
+struct ExplicitT {
+    constexpr explicit ExplicitT(int x) : value(x) {}
+    int value;
+};
+
+struct ImplicitT {
+    constexpr ImplicitT(int x) : value(x) {}
+    int value;
+};
+
+struct ExplicitNothrowT {
+    explicit ExplicitNothrowT(int x) noexcept : value(x) {}
+    int value;
+};
+
+struct ImplicitNothrowT {
+    ImplicitNothrowT(int x) noexcept : value(x) {}
+    int value;
+};
+
+int main(int, char**) {
+    { // explicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitT>, int, int>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitT>, int, int>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitNothrowT>, int, int>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitNothrowT>, int, int>::value, "");
+    }
+    { // implicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitT>, int, int>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitT>, int, int>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitNothrowT>, int, int>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitNothrowT>, int, int>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/assign_tuple_like.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/assign_tuple_like.pass.cpp
new file mode 100644
index 0000000..f8dfd9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/assign_tuple_like.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<class U, class V> pair& operator=(tuple<U, V>&& p);
+
+#include <utility>
+#include <tuple>
+#include <array>
+#include <memory>
+#include <cassert>
+
+#include "archetypes.h"
+
+int main(int, char**)
+{
+    using C = TestTypes::TestType;
+    {
+       using P = std::pair<int, C>;
+       using T = std::tuple<int, C>;
+       T t(42, C{42});
+       P p(101, C{101});
+       C::reset_constructors();
+       p = t;
+       assert(C::constructed == 0);
+       assert(C::assigned == 1);
+       assert(C::copy_assigned == 1);
+       assert(C::move_assigned == 0);
+       assert(p.first == 42);
+       assert(p.second.value == 42);
+    }
+    {
+       using P = std::pair<int, C>;
+       using T = std::tuple<int, C>;
+       T t(42, -42);
+       P p(101, 101);
+       C::reset_constructors();
+       p = std::move(t);
+       assert(C::constructed == 0);
+       assert(C::assigned == 1);
+       assert(C::copy_assigned == 0);
+       assert(C::move_assigned == 1);
+       assert(p.first == 42);
+       assert(p.second.value == -42);
+    }
+    {
+       using P = std::pair<C, C>;
+       using T = std::array<C, 2>;
+       T t = {42, -42};
+       P p{101, 101};
+       C::reset_constructors();
+       p = t;
+       assert(C::constructed == 0);
+       assert(C::assigned == 2);
+       assert(C::copy_assigned == 2);
+       assert(C::move_assigned == 0);
+       assert(p.first.value == 42);
+       assert(p.second.value == -42);
+    }
+    {
+       using P = std::pair<C, C>;
+       using T = std::array<C, 2>;
+       T t = {42, -42};
+       P p{101, 101};
+       C::reset_constructors();
+       p = t;
+       assert(C::constructed == 0);
+       assert(C::assigned == 2);
+       assert(C::copy_assigned == 2);
+       assert(C::move_assigned == 0);
+       assert(p.first.value == 42);
+       assert(p.second.value == -42);
+    }
+    {
+       using P = std::pair<C, C>;
+       using T = std::array<C, 2>;
+       T t = {42, -42};
+       P p{101, 101};
+       C::reset_constructors();
+       p = std::move(t);
+       assert(C::constructed == 0);
+       assert(C::assigned == 2);
+       assert(C::copy_assigned == 0);
+       assert(C::move_assigned == 2);
+       assert(p.first.value == 42);
+       assert(p.second.value == -42);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp
new file mode 100644
index 0000000..c68ed3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair(const T1& x, const T2& y);
+
+#include <type_traits>
+#include <utility>
+
+struct ExplicitT {
+    constexpr explicit ExplicitT(int x) : value(x) {}
+    constexpr explicit ExplicitT(ExplicitT const& o) : value(o.value) {}
+    int value;
+};
+
+struct ImplicitT {
+    constexpr ImplicitT(int x) : value(x) {}
+    constexpr ImplicitT(ImplicitT const& o) : value(o.value) {}
+    int value;
+};
+
+struct ExplicitNothrowT {
+    explicit ExplicitNothrowT(ExplicitNothrowT const&) noexcept {}
+};
+
+struct ImplicitNothrowT {
+    ImplicitNothrowT(ImplicitNothrowT const&) noexcept {}
+};
+
+int main(int, char**) {
+    { // explicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitT>,
+                                                     ExplicitT const&, ExplicitT const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitT>,
+                                                     ExplicitNothrowT const&, ExplicitT const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitNothrowT>,
+                                                     ExplicitT const&, ExplicitNothrowT const&>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitNothrowT>,
+                                                     ExplicitNothrowT const&, ExplicitNothrowT const&>::value, "");
+    }
+    { // implicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitT>,
+                                                     ImplicitT const&, ImplicitT const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitT>,
+                                                     ImplicitNothrowT const&, ImplicitT const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitNothrowT>,
+                                                     ImplicitT const&, ImplicitNothrowT const&>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitNothrowT>,
+                                                     ImplicitNothrowT const&, ImplicitNothrowT const&>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/const_pair_U_V.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/const_pair_U_V.pass.cpp
new file mode 100644
index 0000000..497e4f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/const_pair_U_V.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class U, class V> EXPLICIT constexpr pair(const pair<U, V>& p);
+
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+
+struct ExplicitT {
+    constexpr explicit ExplicitT(int x) : value(x) {}
+    constexpr explicit ExplicitT(ExplicitT const& o) : value(o.value) {}
+    int value;
+};
+
+struct ImplicitT {
+    constexpr ImplicitT(int x) : value(x) {}
+    constexpr ImplicitT(ImplicitT const& o) : value(o.value) {}
+    int value;
+};
+
+struct ExplicitNothrowT {
+    explicit ExplicitNothrowT(int x) noexcept : value(x) {}
+    int value;
+};
+
+struct ImplicitNothrowT {
+    ImplicitNothrowT(int x) noexcept : value(x) {}
+    int value;
+};
+
+int main(int, char**) {
+    { // explicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitT>,
+                                                     std::pair<int, int> const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitT>,
+                                                     std::pair<int, int> const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitNothrowT>,
+                                                     std::pair<int, int> const&>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitNothrowT>,
+                                                     std::pair<int, int> const&>::value, "");
+    }
+    { // implicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitT>,
+                                                     std::pair<int, int> const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitT>,
+                                                     std::pair<int, int> const&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitNothrowT>,
+                                                     std::pair<int, int> const&>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitNothrowT>,
+                                                     std::pair<int, int> const&>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/default.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/default.pass.cpp
new file mode 100644
index 0000000..3ebf851
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/default.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// constexpr pair();
+
+#include <utility>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+struct ThrowingDefault {
+  ThrowingDefault() { }
+};
+
+struct NonThrowingDefault {
+  NonThrowingDefault() noexcept { }
+};
+
+int main(int, char**) {
+
+    static_assert(!std::is_nothrow_default_constructible<std::pair<ThrowingDefault, ThrowingDefault>>::value, "");
+    static_assert(!std::is_nothrow_default_constructible<std::pair<NonThrowingDefault, ThrowingDefault>>::value, "");
+    static_assert(!std::is_nothrow_default_constructible<std::pair<ThrowingDefault, NonThrowingDefault>>::value, "");
+    static_assert( std::is_nothrow_default_constructible<std::pair<NonThrowingDefault, NonThrowingDefault>>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/non_trivial_copy_move_ABI.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/non_trivial_copy_move_ABI.pass.cpp
new file mode 100644
index 0000000..0504602
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/non_trivial_copy_move_ABI.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// The test suite needs to define the ABI macros on the command line when
+// modules are enabled.
+// UNSUPPORTED: modules-build
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// Test that we provide the non-trivial copy operations when _LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR
+// is specified.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR
+// ADDITIONAL_COMPILE_FLAGS: -Wno-macro-redefined
+
+#include <utility>
+#include <type_traits>
+#include <cstdlib>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+struct HasNonTrivialABI : std::integral_constant<bool,
+    !std::is_trivially_destructible<T>::value
+    || (std::is_copy_constructible<T>::value && !std::is_trivially_copy_constructible<T>::value)
+#if TEST_STD_VER >= 11
+   || (std::is_move_constructible<T>::value && !std::is_trivially_move_constructible<T>::value)
+#endif
+> {};
+
+#if TEST_STD_VER >= 11
+struct NonTrivialDtor {
+    NonTrivialDtor(NonTrivialDtor const&) = default;
+    ~NonTrivialDtor();
+};
+NonTrivialDtor::~NonTrivialDtor() {}
+static_assert(HasNonTrivialABI<NonTrivialDtor>::value, "");
+
+struct NonTrivialCopy {
+    NonTrivialCopy(NonTrivialCopy const&);
+};
+NonTrivialCopy::NonTrivialCopy(NonTrivialCopy const&) {}
+static_assert(HasNonTrivialABI<NonTrivialCopy>::value, "");
+
+struct NonTrivialMove {
+    NonTrivialMove(NonTrivialMove const&) = default;
+    NonTrivialMove(NonTrivialMove&&);
+};
+NonTrivialMove::NonTrivialMove(NonTrivialMove&&) {}
+static_assert(HasNonTrivialABI<NonTrivialMove>::value, "");
+
+struct DeletedCopy {
+    DeletedCopy(DeletedCopy const&) = delete;
+    DeletedCopy(DeletedCopy&&) = default;
+};
+static_assert(!HasNonTrivialABI<DeletedCopy>::value, "");
+
+struct TrivialMove {
+  TrivialMove(TrivialMove &&) = default;
+};
+static_assert(!HasNonTrivialABI<TrivialMove>::value, "");
+
+struct Trivial {
+    Trivial(Trivial const&) = default;
+};
+static_assert(!HasNonTrivialABI<Trivial>::value, "");
+#endif
+
+
+void test_trivial()
+{
+    {
+        typedef std::pair<int, short> P;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<int, short> P;
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<NonTrivialDtor, int>;
+        static_assert(!std::is_trivially_destructible<P>::value, "");
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<NonTrivialCopy, int>;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<NonTrivialMove, int>;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<DeletedCopy, int>;
+        static_assert(!std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<Trivial, int>;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<TrivialMove, int>;
+        static_assert(!std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasNonTrivialABI<P>::value, "");
+    }
+#endif
+}
+
+void test_layout() {
+    typedef std::pair<std::pair<char, char>, char> PairT;
+    static_assert(sizeof(PairT) == 3, "");
+    static_assert(TEST_ALIGNOF(PairT) == TEST_ALIGNOF(char), "");
+    static_assert(offsetof(PairT, first) == 0, "");
+}
+
+int main(int, char**) {
+    test_trivial();
+    test_layout();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/pair.tuple_element.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/pair.tuple_element.fail.cpp
new file mode 100644
index 0000000..40e57df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/pair.tuple_element.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// tuple_element<I, pair<T1, T2> >::type
+
+#include <utility>
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<int, double> P;
+    std::tuple_element<2, P>::type foo; // expected-note {{requested here}}
+        // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '2U[L]{0,2} < 2')?}}{{.*}}Index out of bounds in std::tuple_element<std::pair<T1, T2>>}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
new file mode 100644
index 0000000..2323851
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class... Args1, class... Args2>
+//     pair(piecewise_construct_t, tuple<Args1...> first_args,
+//                                 tuple<Args2...> second_args);
+
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "archetypes.h"
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+    using NonThrowingConvert = NonThrowingTypes::ConvertingType;
+    using ThrowingConvert = NonTrivialTypes::ConvertingType;
+    static_assert(!std::is_nothrow_constructible<std::pair<ThrowingConvert, ThrowingConvert>,
+                                                 std::piecewise_construct_t, std::tuple<int, int>, std::tuple<long, long>>::value, "");
+    static_assert(!std::is_nothrow_constructible<std::pair<NonThrowingConvert, ThrowingConvert>,
+                                                 std::piecewise_construct_t, std::tuple<int, int>, std::tuple<long, long>>::value, "");
+    static_assert(!std::is_nothrow_constructible<std::pair<ThrowingConvert, NonThrowingConvert>,
+                                                 std::piecewise_construct_t, std::tuple<int, int>, std::tuple<long, long>>::value, "");
+    static_assert( std::is_nothrow_constructible<std::pair<NonThrowingConvert, NonThrowingConvert>,
+                                                 std::piecewise_construct_t, std::tuple<int, int>, std::tuple<long, long>>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/rv_pair_U_V.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/rv_pair_U_V.pass.cpp
new file mode 100644
index 0000000..5760284
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/rv_pair_U_V.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class U, class V> pair(pair<U, V>&& p);
+
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+
+struct ExplicitT {
+    constexpr explicit ExplicitT(int x) : value(x) {}
+    int value;
+};
+
+struct ImplicitT {
+    constexpr ImplicitT(int x) : value(x) {}
+    int value;
+};
+
+struct ExplicitNothrowT {
+    explicit ExplicitNothrowT(int x) noexcept : value(x) {}
+    int value;
+};
+
+struct ImplicitNothrowT {
+    ImplicitNothrowT(int x) noexcept : value(x) {}
+    int value;
+};
+
+int main(int, char**) {
+    { // explicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitT>,
+                                                     std::pair<int, int>&&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitT>,
+                                                     std::pair<int, int>&&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ExplicitT, ExplicitNothrowT>,
+                                                     std::pair<int, int>&&>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ExplicitNothrowT, ExplicitNothrowT>,
+                                                     std::pair<int, int>&&>::value, "");
+    }
+    { // implicit noexcept test
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitT>,
+                                                     std::pair<int, int>&&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitT>,
+                                                     std::pair<int, int>&&>::value, "");
+        static_assert(!std::is_nothrow_constructible<std::pair<ImplicitT, ImplicitNothrowT>,
+                                                     std::pair<int, int>&&>::value, "");
+        static_assert( std::is_nothrow_constructible<std::pair<ImplicitNothrowT, ImplicitNothrowT>,
+                                                     std::pair<int, int>&&>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/trivial_copy_move_ABI.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/trivial_copy_move_ABI.pass.cpp
new file mode 100644
index 0000000..013b79b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/pairs/pairs.pair/trivial_copy_move_ABI.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// Test that we properly provide the trivial copy operations by default.
+
+// FreeBSD still provides the old ABI for std::pair.
+// XFAIL: freebsd
+
+#include <utility>
+#include <type_traits>
+#include <cstdlib>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+struct HasTrivialABI : std::integral_constant<bool,
+    std::is_trivially_destructible<T>::value
+    && (!std::is_copy_constructible<T>::value || std::is_trivially_copy_constructible<T>::value)
+#if TEST_STD_VER >= 11
+   && (!std::is_move_constructible<T>::value || std::is_trivially_move_constructible<T>::value)
+#endif
+> {};
+
+#if TEST_STD_VER >= 11
+struct NonTrivialDtor {
+    NonTrivialDtor(NonTrivialDtor const&) = default;
+    ~NonTrivialDtor();
+};
+NonTrivialDtor::~NonTrivialDtor() {}
+static_assert(!HasTrivialABI<NonTrivialDtor>::value, "");
+
+struct NonTrivialCopy {
+    NonTrivialCopy(NonTrivialCopy const&);
+};
+NonTrivialCopy::NonTrivialCopy(NonTrivialCopy const&) {}
+static_assert(!HasTrivialABI<NonTrivialCopy>::value, "");
+
+struct NonTrivialMove {
+    NonTrivialMove(NonTrivialMove const&) = default;
+    NonTrivialMove(NonTrivialMove&&);
+};
+NonTrivialMove::NonTrivialMove(NonTrivialMove&&) {}
+static_assert(!HasTrivialABI<NonTrivialMove>::value, "");
+
+struct DeletedCopy {
+    DeletedCopy(DeletedCopy const&) = delete;
+    DeletedCopy(DeletedCopy&&) = default;
+};
+static_assert(HasTrivialABI<DeletedCopy>::value, "");
+
+struct TrivialMove {
+  TrivialMove(TrivialMove &&) = default;
+};
+static_assert(HasTrivialABI<TrivialMove>::value, "");
+
+struct Trivial {
+    Trivial(Trivial const&) = default;
+};
+static_assert(HasTrivialABI<Trivial>::value, "");
+#endif
+
+
+void test_trivial()
+{
+    {
+        typedef std::pair<int, short> P;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(HasTrivialABI<P>::value, "");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<int, short> P;
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(HasTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<NonTrivialDtor, int>;
+        static_assert(!std::is_trivially_destructible<P>::value, "");
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(!HasTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<NonTrivialCopy, int>;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(!HasTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<NonTrivialMove, int>;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(!std::is_trivially_move_constructible<P>::value, "");
+        static_assert(!HasTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<DeletedCopy, int>;
+        static_assert(!std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<Trivial, int>;
+        static_assert(std::is_copy_constructible<P>::value, "");
+        static_assert(std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasTrivialABI<P>::value, "");
+    }
+    {
+        using P = std::pair<TrivialMove, int>;
+        static_assert(!std::is_copy_constructible<P>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+        static_assert(std::is_trivially_move_constructible<P>::value, "");
+        static_assert(HasTrivialABI<P>::value, "");
+    }
+#endif
+}
+
+void test_layout() {
+    typedef std::pair<std::pair<char, char>, char> PairT;
+    static_assert(sizeof(PairT) == 3, "");
+    static_assert(TEST_ALIGNOF(PairT) == TEST_ALIGNOF(char), "");
+    static_assert(offsetof(PairT, first) == 0, "");
+}
+
+int main(int, char**) {
+    test_trivial();
+    test_layout();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/version.pass.cpp
new file mode 100644
index 0000000..52d1c43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/utility/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+#include <utility>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/variant.variant/variant.helper/variant_alternative.fail.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/variant.variant/variant.helper/variant_alternative.fail.cpp
new file mode 100644
index 0000000..1e8037e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/variant.variant/variant.helper/variant_alternative.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <variant>
+// UNSUPPORTED: c++03, c++11, c++14
+
+
+// template <size_t I, class T> struct variant_alternative; // undefined
+// template <size_t I, class T> struct variant_alternative<I, const T>;
+// template <size_t I, class T> struct variant_alternative<I, volatile T>;
+// template <size_t I, class T> struct variant_alternative<I, const volatile T>;
+// template <size_t I, class T>
+//   using variant_alternative_t = typename variant_alternative<I, T>::type;
+//
+// template <size_t I, class... Types>
+//    struct variant_alternative<I, variant<Types...>>;
+
+
+#include <variant>
+#include <cassert>
+
+
+int main(int, char**)
+{
+    {
+        typedef std::variant<int, double> T;
+        std::variant_alternative<2, T>::type foo; // expected-note {{requested here}}
+        // expected-error-re@variant:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '2U[L]{0,2} < sizeof...\(_Types\)')?}}{{.*}}Index out of bounds in std::variant_alternative<>}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/variant.variant/variant_size.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/variant.variant/variant_size.pass.cpp
new file mode 100644
index 0000000..4e2d787
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/variant.variant/variant_size.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+#include <limits>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+
+template <class Sequence>
+struct make_variant_imp;
+
+template <size_t ...Indices>
+struct make_variant_imp<std::integer_sequence<size_t, Indices...>> {
+  template <size_t> using AlwaysChar = char;
+  using type = std::variant<AlwaysChar<Indices>...>;
+};
+
+template <size_t N>
+using make_variant_t = typename make_variant_imp<std::make_index_sequence<N>>::type;
+
+constexpr bool ExpectEqual =
+#ifdef _LIBCPP_ABI_VARIANT_INDEX_TYPE_OPTIMIZATION
+  false;
+#else
+  true;
+#endif
+
+template <class IndexType>
+void test_index_type() {
+  using Lim = std::numeric_limits<IndexType>;
+  using T1 = make_variant_t<Lim::max() - 1>;
+  using T2 = make_variant_t<Lim::max()>;
+  static_assert((sizeof(T1) == sizeof(T2)) == ExpectEqual, "");
+}
+
+template <class IndexType>
+void test_index_internals() {
+  using Lim = std::numeric_limits<IndexType>;
+  static_assert(std::__choose_index_type(Lim::max() -1) !=
+                std::__choose_index_type(Lim::max()), "");
+  static_assert(std::is_same_v<
+      std::__variant_index_t<Lim::max()-1>,
+      std::__variant_index_t<Lim::max()>
+    > == ExpectEqual, "");
+  using IndexT = std::__variant_index_t<Lim::max()-1>;
+  using IndexLim = std::numeric_limits<IndexT>;
+  static_assert(std::__variant_npos<IndexT> == IndexLim::max(), "");
+}
+
+int main(int, char**) {
+  test_index_type<unsigned char>();
+  // This won't compile due to template depth issues.
+  //test_index_type<unsigned short>();
+  test_index_internals<unsigned char>();
+  test_index_internals<unsigned short>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/version.pass.cpp b/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/version.pass.cpp
new file mode 100644
index 0000000..1dcb75d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/utilities/variant/version.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <variant>
+
+#include <variant>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_VERSION
+#error _LIBCPP_VERSION not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp
new file mode 100644
index 0000000..aaa9ad7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: stdlib=apple-libc++
+
+// This file checks various properties of the installation of libc++ when built as
+// a system library on Apple platforms.
+
+// Make sure we install the libc++ headers in the right location.
+//
+// RUN: stat "%{include}/__config"
+
+// Make sure we install libc++.1.dylib in the right location.
+//
+// RUN: stat "%{lib}/libc++.1.dylib"
+
+// Make sure we install a symlink from libc++.dylib to libc++.1.dylib.
+//
+// RUN: stat "%{lib}/libc++.dylib"
+// RUN: readlink "%{lib}/libc++.dylib" | grep "libc++.1.dylib"
+
+// Make sure the install_name is /usr/lib.
+//
+// In particular, make sure we don't use any @rpath in the load commands. When building as
+// a system library, it is important to hardcode the installation paths in the dylib, because
+// various tools like dyld and ld64 will treat us specially if they recognize us as being a
+// system library.
+//
+// TODO: We currently don't do that correctly in the CMake build.
+//
+// XRUNX: otool -L "%{lib}/libc++.1.dylib" | grep '/usr/lib/libc++.1.dylib'
+// XRUNX: ! otool -l "%{lib}/libc++.1.dylib" | grep -E "LC_RPATH|@loader_path|@rpath"
+
+// Make sure the compatibility_version of libc++ is 1.0.0.
+// Failure to respect this can result in applications not being able to find libc++
+// when they are loaded by dyld, if the compatibility version was bumped.
+//
+// RUN: otool -L "%{lib}/libc++.1.dylib" | grep "libc++.1.dylib" | grep "compatibility version 1.0.0"
diff --git a/app/src/main/cpp/libcxx/test/libcxx/vendor/clang-cl/static-lib-exports.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/vendor/clang-cl/static-lib-exports.sh.cpp
new file mode 100644
index 0000000..447454e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/vendor/clang-cl/static-lib-exports.sh.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: msvc
+
+// This file checks that the built static libraries don't contain dllexport
+// directives in clang-cl builds.
+
+// RUN: llvm-readobj --coff-directives "%{lib}/libc++.lib" | not grep -i "export:" > /dev/null
+
+// RUN: llvm-readobj --coff-directives "%{lib}/libc++experimental.lib" | not grep -i "export:" > /dev/null
diff --git a/app/src/main/cpp/libcxx/test/libcxx/vendor/mingw/static-lib-exports.sh.cpp b/app/src/main/cpp/libcxx/test/libcxx/vendor/mingw/static-lib-exports.sh.cpp
new file mode 100644
index 0000000..8f29f5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/libcxx/vendor/mingw/static-lib-exports.sh.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: target={{.+}}-windows-gnu
+
+// This file checks that the built static libraries don't contain dllexport
+// directives in MinGW builds.
+
+// RUN: llvm-readobj --coff-directives "%{lib}/libc++.a" | not grep -i "export:" > /dev/null
+
+// RUN: llvm-readobj --coff-directives "%{lib}/libc++experimental.a" | not grep -i "export:" > /dev/null
diff --git a/app/src/main/cpp/libcxx/test/lit.cfg.py b/app/src/main/cpp/libcxx/test/lit.cfg.py
new file mode 100644
index 0000000..647464a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/lit.cfg.py
@@ -0,0 +1,10 @@
+# All the Lit configuration is handled in the site configs -- this file is only
+# left as a canary to catch invocations of Lit that do not go through llvm-lit.
+#
+# Invocations that go through llvm-lit will automatically use the right Lit
+# site configuration inside the build directory.
+
+lit_config.fatal(
+    "You seem to be running Lit directly -- you should be running Lit through "
+    "<build>/bin/llvm-lit, which will ensure that the right Lit configuration "
+    "file is used.")
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.c.library/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.c.library/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.c.library/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy.pass.cpp
new file mode 100644
index 0000000..f3a7090
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter>
+//   constexpr OutIter   // constexpr after C++17
+//   copy(InIter first, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test_copy()
+{
+    const unsigned N = 1000;
+    int ia[N] = {};
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    int ib[N] = {0};
+
+    OutIter r = std::copy(InIter(ia), InIter(ia+N), OutIter(ib));
+    assert(base(r) == ib+N);
+    for (unsigned i = 0; i < N; ++i)
+        assert(ia[i] == ib[i]);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_copy<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test_copy<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy<cpp17_input_iterator<const int*>, int*>();
+
+    test_copy<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy<forward_iterator<const int*>, forward_iterator<int*> >();
+    test_copy<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy<forward_iterator<const int*>, int*>();
+
+    test_copy<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test_copy<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy<bidirectional_iterator<const int*>, int*>();
+
+    test_copy<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test_copy<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy<random_access_iterator<const int*>, int*>();
+
+    test_copy<const int*, cpp17_output_iterator<int*> >();
+    test_copy<const int*, forward_iterator<int*> >();
+    test_copy<const int*, bidirectional_iterator<int*> >();
+    test_copy<const int*, random_access_iterator<int*> >();
+    test_copy<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    test_copy<cpp17_input_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy<forward_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy<bidirectional_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy<random_access_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy<const int*, contiguous_iterator<int*>>();
+
+    test_copy<contiguous_iterator<const int*>, cpp17_output_iterator<int*>>();
+    test_copy<contiguous_iterator<const int*>, forward_iterator<int*>>();
+    test_copy<contiguous_iterator<const int*>, bidirectional_iterator<int*>>();
+    test_copy<contiguous_iterator<const int*>, random_access_iterator<int*>>();
+    test_copy<contiguous_iterator<const int*>, int*>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_backward.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_backward.pass.cpp
new file mode 100644
index 0000000..7b620db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_backward.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator InIter, BidirectionalIterator OutIter>
+//   requires OutputIterator<OutIter, InIter::reference>
+//   constexpr OutIter   // constexpr after C++17
+//   copy_backward(InIter first, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "user_defined_integral.h"
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test_copy_backward()
+{
+    const unsigned N = 1000;
+    int ia[N] = {};
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    int ib[N] = {0};
+
+    OutIter r = std::copy_backward(InIter(ia), InIter(ia+N), OutIter(ib+N));
+    assert(base(r) == ib);
+    for (unsigned i = 0; i < N; ++i)
+        assert(ia[i] == ib[i]);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_copy_backward<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_backward<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_backward<bidirectional_iterator<const int*>, int*>();
+
+    test_copy_backward<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_backward<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_backward<random_access_iterator<const int*>, int*>();
+
+    test_copy_backward<const int*, bidirectional_iterator<int*> >();
+    test_copy_backward<const int*, random_access_iterator<int*> >();
+    test_copy_backward<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    test_copy_backward<contiguous_iterator<const int*>, bidirectional_iterator<int*>>();
+    test_copy_backward<contiguous_iterator<const int*>, random_access_iterator<int*>>();
+    test_copy_backward<contiguous_iterator<const int*>, int*>();
+
+    test_copy_backward<bidirectional_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy_backward<random_access_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy_backward<contiguous_iterator<const int*>, contiguous_iterator<int*>>();
+    test_copy_backward<const int*, contiguous_iterator<int*>>();
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_if.pass.cpp
new file mode 100644
index 0000000..57214e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_if.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter,
+//          Predicate<auto, InIter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr OutIter   // constexpr after C++17
+//   copy_if(InIter first, InIter last, OutIter result, Pred pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Pred
+{
+    TEST_CONSTEXPR_CXX14 bool operator()(int i) {return i % 3 == 0;}
+};
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test_copy_if()
+{
+    const unsigned N = 1000;
+    int ia[N] = {};
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    int ib[N] = {0};
+
+    OutIter r = std::copy_if(InIter(ia), InIter(ia+N), OutIter(ib), Pred());
+    assert(base(r) == ib+N/3+1);
+    for (unsigned i = 0; i < N/3+1; ++i)
+        assert(ib[i] % 3 == 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_copy_if<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_if<cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_if<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_if<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_if<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_if<cpp17_input_iterator<const int*>, int*>();
+
+    test_copy_if<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_if<forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_if<forward_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_if<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_if<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_if<forward_iterator<const int*>, int*>();
+
+    test_copy_if<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_if<bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_if<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_if<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_if<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_if<bidirectional_iterator<const int*>, int*>();
+
+    test_copy_if<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_if<random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_if<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_if<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_if<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_if<random_access_iterator<const int*>, int*>();
+
+    test_copy_if<const int*, cpp17_output_iterator<int*> >();
+    test_copy_if<const int*, cpp17_input_iterator<int*> >();
+    test_copy_if<const int*, forward_iterator<int*> >();
+    test_copy_if<const int*, bidirectional_iterator<int*> >();
+    test_copy_if<const int*, random_access_iterator<int*> >();
+    test_copy_if<const int*, int*>();
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_n.pass.cpp
new file mode 100644
index 0000000..fa425c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/copy_n.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter>
+//   constexpr OutIter   // constexpr after C++17
+//   copy_n(InIter first, InIter::difference_type n, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "user_defined_integral.h"
+
+typedef UserDefinedIntegral<unsigned> UDI;
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test_copy_n()
+{
+    const unsigned N = 1000;
+    int ia[N] = {};
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    int ib[N] = {0};
+
+    OutIter r = std::copy_n(InIter(ia), UDI(N/2), OutIter(ib));
+    assert(base(r) == ib+N/2);
+    for (unsigned i = 0; i < N/2; ++i)
+        assert(ia[i] == ib[i]);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_copy_n<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_n<cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_n<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_n<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_n<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_n<cpp17_input_iterator<const int*>, int*>();
+
+    test_copy_n<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_n<forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_n<forward_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_n<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_n<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_n<forward_iterator<const int*>, int*>();
+
+    test_copy_n<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_n<bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_n<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_n<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_n<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_n<bidirectional_iterator<const int*>, int*>();
+
+    test_copy_n<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test_copy_n<random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test_copy_n<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test_copy_n<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test_copy_n<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test_copy_n<random_access_iterator<const int*>, int*>();
+
+    test_copy_n<const int*, cpp17_output_iterator<int*> >();
+    test_copy_n<const int*, cpp17_input_iterator<int*> >();
+    test_copy_n<const int*, forward_iterator<int*> >();
+    test_copy_n<const int*, bidirectional_iterator<int*> >();
+    test_copy_n<const int*, random_access_iterator<int*> >();
+    test_copy_n<const int*, int*>();
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy.pass.cpp
new file mode 100644
index 0000000..7a5c0a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy.pass.cpp
@@ -0,0 +1,214 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O>
+//   requires indirectly_copyable<I, O>
+//   constexpr ranges::copy_result<I, O> ranges::copy(I first, S last, O result);
+// template<input_range R, weakly_incrementable O>
+//   requires indirectly_copyable<iterator_t<R>, O>
+//   constexpr ranges::copy_result<borrowed_iterator_t<R>, O> ranges::copy(R&& r, O result);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <deque>
+#include <ranges>
+#include <vector>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+#include "type_algorithms.h"
+
+template <class In, class Out = In, class Sent = sentinel_wrapper<In>>
+concept HasCopyIt = requires(In in, Sent sent, Out out) { std::ranges::copy(in, sent, out); };
+
+static_assert(HasCopyIt<int*>);
+static_assert(!HasCopyIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasCopyIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasCopyIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasCopyIt<int*, WeaklyIncrementableNotMovable>);
+struct NotIndirectlyCopyable {};
+static_assert(!HasCopyIt<int*, NotIndirectlyCopyable*>);
+static_assert(!HasCopyIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasCopyIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range, class Out>
+concept HasCopyR = requires(Range range, Out out) { std::ranges::copy(range, out); };
+
+static_assert(HasCopyR<std::array<int, 10>, int*>);
+static_assert(!HasCopyR<InputRangeNotDerivedFrom, int*>);
+static_assert(!HasCopyR<InputRangeNotIndirectlyReadable, int*>);
+static_assert(!HasCopyR<InputRangeNotInputOrOutputIterator, int*>);
+static_assert(!HasCopyR<WeaklyIncrementableNotMovable, int*>);
+static_assert(!HasCopyR<UncheckedRange<NotIndirectlyCopyable*>, int*>);
+static_assert(!HasCopyR<InputRangeNotSentinelSemiregular, int*>);
+static_assert(!HasCopyR<InputRangeNotSentinelEqualityComparableWith, int*>);
+
+static_assert(std::is_same_v<std::ranges::copy_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+// clang-format off
+template <class In, class Out, class Sent = In>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      std::array in{1, 2, 3, 4};
+      std::array<int, 4> out;
+      std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+          std::ranges::copy(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data()));
+      assert(in == out);
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data() + out.size());
+    }
+    {
+      std::array in{1, 2, 3, 4};
+      std::array<int, 4> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+      std::same_as<std::ranges::in_out_result<In, Out>> auto ret = std::ranges::copy(range, Out(out.data()));
+      assert(in == out);
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data() + out.size());
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> in;
+      std::array<int, 0> out;
+      auto ret = std::ranges::copy(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data()));
+      assert(base(ret.in) == in.data());
+      assert(base(ret.out) == out.data());
+    }
+    {
+      std::array<int, 0> in;
+      std::array<int, 0> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+      auto ret   = std::ranges::copy(range, Out(out.data()));
+      assert(base(ret.in) == in.data());
+      assert(base(ret.out) == out.data());
+    }
+  }
+}
+// clang-format on
+
+constexpr bool test() {
+  meta::for_each(meta::forward_iterator_list<int*>{}, []<class Out>() {
+    test_iterators<cpp20_input_iterator<int*>, Out, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+    test_iterators<ProxyIterator<cpp20_input_iterator<int*>>,
+                   ProxyIterator<Out>,
+                   sentinel_wrapper<ProxyIterator<cpp20_input_iterator<int*>>>>();
+
+    meta::for_each(meta::forward_iterator_list<int*>{}, []<class In>() {
+      test_iterators<In, Out>();
+      test_iterators<In, Out, sized_sentinel<In>>();
+      test_iterators<In, Out, sentinel_wrapper<In>>();
+
+      test_iterators<ProxyIterator<In>, ProxyIterator<Out>>();
+      test_iterators<ProxyIterator<In>, ProxyIterator<Out>, sized_sentinel<ProxyIterator<In>>>();
+      test_iterators<ProxyIterator<In>, ProxyIterator<Out>, sentinel_wrapper<ProxyIterator<In>>>();
+    });
+  });
+
+  { // check that ranges::dangling is returned
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<std::ranges::dangling, int*>> auto ret =
+        std::ranges::copy(std::array{1, 2, 3, 4}, out.data());
+    assert(ret.out == out.data() + 4);
+    assert((out == std::array{1, 2, 3, 4}));
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    std::array in{1, 2, 3, 4};
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<int*, int*>> auto ret = std::ranges::copy(std::views::all(in), out.data());
+    assert(ret.in == in.data() + 4);
+    assert(ret.out == out.data() + 4);
+    assert(in == out);
+  }
+
+  { // check that every element is copied exactly once
+    struct CopyOnce {
+      bool copied                               = false;
+      constexpr CopyOnce()                      = default;
+      constexpr CopyOnce(const CopyOnce& other) = delete;
+      constexpr CopyOnce& operator=(const CopyOnce& other) {
+        assert(!other.copied);
+        copied = true;
+        return *this;
+      }
+    };
+    {
+      std::array<CopyOnce, 4> in{};
+      std::array<CopyOnce, 4> out{};
+      auto ret = std::ranges::copy(in.begin(), in.end(), out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));
+    }
+    {
+      std::array<CopyOnce, 4> in{};
+      std::array<CopyOnce, 4> out{};
+      auto ret = std::ranges::copy(in, out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));
+    }
+  }
+
+  { // check that the range is copied forwards
+    struct OnlyForwardsCopyable {
+      OnlyForwardsCopyable* next = nullptr;
+      bool canCopy               = false;
+      OnlyForwardsCopyable()     = default;
+      constexpr OnlyForwardsCopyable& operator=(const OnlyForwardsCopyable&) {
+        assert(canCopy);
+        if (next != nullptr)
+          next->canCopy = true;
+        return *this;
+      }
+    };
+    {
+      std::array<OnlyForwardsCopyable, 3> in{};
+      std::array<OnlyForwardsCopyable, 3> out{};
+      out[0].next    = &out[1];
+      out[1].next    = &out[2];
+      out[0].canCopy = true;
+      auto ret       = std::ranges::copy(in.begin(), in.end(), out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(out[0].canCopy);
+      assert(out[1].canCopy);
+      assert(out[2].canCopy);
+    }
+    {
+      std::array<OnlyForwardsCopyable, 3> in{};
+      std::array<OnlyForwardsCopyable, 3> out{};
+      out[0].next    = &out[1];
+      out[1].next    = &out[2];
+      out[0].canCopy = true;
+      auto ret       = std::ranges::copy(in, out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(out[0].canCopy);
+      assert(out[1].canCopy);
+      assert(out[2].canCopy);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy.segmented.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy.segmented.pass.cpp
new file mode 100644
index 0000000..5b8d8b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy.segmented.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <deque>
+#include <ranges>
+#include <vector>
+
+#include "test_iterators.h"
+#include "type_algorithms.h"
+
+template <class InContainer, class OutContainer>
+constexpr void test_containers() {
+  using InIter  = typename InContainer::iterator;
+  using OutIter = typename OutContainer::iterator;
+
+  {
+    InContainer in{1, 2, 3, 4};
+    OutContainer out(4);
+
+    std::same_as<std::ranges::in_out_result<InIter, OutIter>> auto ret =
+        std::ranges::copy(in.begin(), in.end(), out.begin());
+    assert(std::ranges::equal(in, out));
+    assert(ret.in == in.end());
+    assert(ret.out == out.end());
+  }
+  {
+    InContainer in{1, 2, 3, 4};
+    OutContainer out(4);
+    std::same_as<std::ranges::in_out_result<InIter, OutIter>> auto ret = std::ranges::copy(in, out.begin());
+    assert(std::ranges::equal(in, out));
+    assert(ret.in == in.end());
+    assert(ret.out == out.end());
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_join_view() {
+  auto to_subranges = std::views::transform([](auto& vec) {
+    return std::ranges::subrange(Iter(vec.data()), Sent(Iter(vec.data() + vec.size())));
+  });
+
+  { // segmented -> contiguous
+    std::vector<std::vector<int>> vectors = {};
+    auto range                            = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range.begin(), range.end());
+    std::array<int, 0> arr;
+
+    std::ranges::copy(subrange_vector | std::views::join, arr.begin());
+    assert(std::ranges::equal(arr, std::array<int, 0>{}));
+  }
+  { // segmented -> contiguous
+    std::vector<std::vector<int>> vectors = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10}, {}};
+    auto range                            = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range.begin(), range.end());
+    std::array<int, 10> arr;
+
+    std::ranges::copy(subrange_vector | std::views::join, arr.begin());
+    assert(std::ranges::equal(arr, std::array{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}));
+  }
+  { // contiguous -> segmented
+    std::vector<std::vector<int>> vectors = {{0, 0, 0, 0}, {0, 0}, {0, 0, 0, 0}, {}};
+    auto range                            = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range.begin(), range.end());
+    std::array arr = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+
+    std::ranges::copy(arr, (subrange_vector | std::views::join).begin());
+    assert(std::ranges::equal(subrange_vector | std::views::join, std::array{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}));
+  }
+  { // segmented -> segmented
+    std::vector<std::vector<int>> vectors = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10}, {}};
+    auto range1                           = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range1.begin(), range1.end());
+    std::vector<std::vector<int>> to_vectors = {{0, 0, 0, 0}, {0, 0, 0, 0}, {}, {0, 0}};
+    auto range2                              = to_vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> to_subrange_vector(range2.begin(), range2.end());
+
+    std::ranges::copy(subrange_vector | std::views::join, (to_subrange_vector | std::views::join).begin());
+    assert(std::ranges::equal(to_subrange_vector | std::views::join, std::array{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}));
+  }
+}
+
+int main(int, char**) {
+  if (!std::is_constant_evaluated()) {
+    test_containers<std::deque<int>, std::deque<int>>();
+    test_containers<std::deque<int>, std::vector<int>>();
+    test_containers<std::vector<int>, std::deque<int>>();
+    test_containers<std::vector<int>, std::vector<int>>();
+  }
+
+  meta::for_each(meta::forward_iterator_list<int*>{}, []<class Iter> {
+    test_join_view<Iter, Iter>();
+    test_join_view<Iter, sentinel_wrapper<Iter>>();
+    test_join_view<Iter, sized_sentinel<Iter>>();
+  });
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_backward.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_backward.pass.cpp
new file mode 100644
index 0000000..036dfe5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_backward.pass.cpp
@@ -0,0 +1,332 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+
+// template<bidirectional_iterator I1, sentinel_for<I1> S1, bidirectional_iterator I2>
+//   requires indirectly_copyable<I1, I2>
+//   constexpr ranges::copy_backward_result<I1, I2>
+//     ranges::copy_backward(I1 first, S1 last, I2 result);
+// template<bidirectional_range R, bidirectional_iterator I>
+//   requires indirectly_copyable<iterator_t<R>, I>
+//   constexpr ranges::copy_backward_result<borrowed_iterator_t<R>, I>
+//     ranges::copy_backward(R&& r, I result);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <deque>
+#include <ranges>
+#include <vector>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class In, class Out = In, class Sent = sentinel_wrapper<In>>
+concept HasCopyBackwardIt = requires(In in, Sent sent, Out out) { std::ranges::copy_backward(in, sent, out); };
+
+static_assert(HasCopyBackwardIt<int*>);
+static_assert(!HasCopyBackwardIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasCopyBackwardIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasCopyBackwardIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasCopyBackwardIt<int*, WeaklyIncrementableNotMovable>);
+struct NotIndirectlyCopyable {};
+static_assert(!HasCopyBackwardIt<int*, NotIndirectlyCopyable*>);
+static_assert(!HasCopyBackwardIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasCopyBackwardIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range, class Out>
+concept HasCopyBackwardR = requires(Range range, Out out) { std::ranges::copy_backward(range, out); };
+
+static_assert(HasCopyBackwardR<std::array<int, 10>, int*>);
+static_assert(!HasCopyBackwardR<InputRangeNotDerivedFrom, int*>);
+static_assert(!HasCopyBackwardR<InputRangeNotIndirectlyReadable, int*>);
+static_assert(!HasCopyBackwardR<InputRangeNotInputOrOutputIterator, int*>);
+static_assert(!HasCopyBackwardR<WeaklyIncrementableNotMovable, int*>);
+static_assert(!HasCopyBackwardR<UncheckedRange<NotIndirectlyCopyable*>, int*>);
+static_assert(!HasCopyBackwardR<InputRangeNotSentinelSemiregular, int*>);
+static_assert(!HasCopyBackwardR<InputRangeNotSentinelEqualityComparableWith, int*>);
+
+static_assert(std::is_same_v<std::ranges::copy_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+template <class In, class Out, class Sent>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      std::array in {1, 2, 3, 4};
+      std::array<int, 4> out;
+      std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+        std::ranges::copy_backward(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data() + out.size()));
+      assert(in == out);
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data());
+    }
+    {
+      std::array in {1, 2, 3, 4};
+      std::array<int, 4> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+      std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+          std::ranges::copy_backward(range, Out(out.data() + out.size()));
+      assert(in == out);
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data());
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> in;
+      std::array<int, 0> out;
+      auto ret =
+          std::ranges::copy_backward(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data() + out.size()));
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data());
+    }
+    {
+      std::array<int, 0> in;
+      std::array<int, 0> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+      auto ret = std::ranges::copy_backward(range, Out(out.data()));
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data());
+    }
+  }
+}
+
+template <class InContainer, class OutContainer, class In, class Out, class Sent = In>
+constexpr void test_containers() {
+  {
+    InContainer in {1, 2, 3, 4};
+    OutContainer out(4);
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+      std::ranges::copy_backward(In(in.begin()), Sent(In(in.end())), Out(out.end()));
+    assert(std::ranges::equal(in, out));
+    assert(base(ret.in) == in.end());
+    assert(base(ret.out) == out.begin());
+  }
+  {
+    InContainer in {1, 2, 3, 4};
+    OutContainer out(4);
+    auto range = std::ranges::subrange(In(in.begin()), Sent(In(in.end())));
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret = std::ranges::copy_backward(range, Out(out.end()));
+    assert(std::ranges::equal(in, out));
+    assert(base(ret.in) == in.end());
+    assert(base(ret.out) == out.begin());
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_join_view() {
+  auto to_subranges = std::views::transform([](auto& vec) {
+          return std::ranges::subrange(Iter(vec.begin()), Sent(Iter(vec.end())));
+        });
+
+  { // segmented -> contiguous
+    std::vector<std::vector<int>> vectors = {};
+    auto range = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range.begin(), range.end());
+    std::array<int, 0> arr;
+
+    std::ranges::copy_backward(subrange_vector | std::views::join, arr.end());
+    assert(std::ranges::equal(arr, std::array<int, 0>{}));
+  }
+  { // segmented -> contiguous
+    std::vector<std::vector<int>> vectors = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10}, {}};
+    auto range = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range.begin(), range.end());
+    std::array<int, 10> arr;
+
+    std::ranges::copy_backward(subrange_vector | std::views::join, arr.end());
+    assert(std::ranges::equal(arr, std::array{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}));
+  }
+  { // contiguous -> segmented
+    std::vector<std::vector<int>> vectors = {{0, 0, 0, 0}, {0, 0}, {0, 0, 0, 0}, {}};
+    auto range = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range.begin(), range.end());
+    std::array arr = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+
+    std::ranges::copy_backward(arr, (subrange_vector | std::views::join).end());
+    assert(std::ranges::equal(subrange_vector | std::views::join, std::array{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}));
+  }
+  { // segmented -> segmented
+    std::vector<std::vector<int>> vectors = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10}, {}};
+    auto range1 = vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> subrange_vector(range1.begin(), range1.end());
+    std::vector<std::vector<int>> to_vectors = {{0, 0, 0, 0}, {0, 0, 0, 0}, {}, {0, 0}};
+    auto range2 = to_vectors | to_subranges;
+    std::vector<std::ranges::subrange<Iter, Sent>> to_subrange_vector(range2.begin(), range2.end());
+
+    std::ranges::copy_backward(subrange_vector | std::views::join, (to_subrange_vector | std::views::join).end());
+    assert(std::ranges::equal(to_subrange_vector | std::views::join, std::array{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}));
+  }
+}
+
+template <class>
+constexpr bool is_proxy_iterator = false;
+
+template <class Iter>
+constexpr bool is_proxy_iterator<ProxyIterator<Iter>> = true;
+
+template <template <class> class InIter, template <class> class OutIter>
+constexpr void test_sentinels() {
+  test_iterators<InIter<int*>, OutIter<int*>, InIter<int*>>();
+  test_iterators<InIter<int*>, OutIter<int*>, sentinel_wrapper<InIter<int*>>>();
+  test_iterators<InIter<int*>, OutIter<int*>, sized_sentinel<InIter<int*>>>();
+
+  if constexpr (!std::is_same_v<InIter<int*>, contiguous_iterator<int*>> &&
+                !std::is_same_v<OutIter<int*>, contiguous_iterator<int*>> &&
+                !std::is_same_v<InIter<int*>, ContiguousProxyIterator<int*>> &&
+                !std::is_same_v<OutIter<int*>, ContiguousProxyIterator<int*>>) {
+    if (!std::is_constant_evaluated()) {
+      test_containers<std::deque<int>,
+                      std::deque<int>,
+                      InIter<std::deque<int>::iterator>,
+                      OutIter<std::deque<int>::iterator>>();
+      test_containers<std::deque<int>,
+                      std::vector<int>,
+                      InIter<std::deque<int>::iterator>,
+                      OutIter<std::vector<int>::iterator>>();
+      test_containers<std::vector<int>,
+                      std::deque<int>,
+                      InIter<std::vector<int>::iterator>,
+                      OutIter<std::deque<int>::iterator>>();
+      test_containers<std::vector<int>,
+                      std::vector<int>,
+                      InIter<std::vector<int>::iterator>,
+                      OutIter<std::vector<int>::iterator>>();
+    }
+    if constexpr (!is_proxy_iterator<InIter<int*>>)
+      test_join_view<InIter<std::vector<int>::iterator>, InIter<std::vector<int>::iterator>>();
+  }
+}
+
+template <template <class> class Out>
+constexpr void test_in_iterators() {
+  test_sentinels<bidirectional_iterator, Out>();
+  test_sentinels<random_access_iterator, Out>();
+  test_sentinels<contiguous_iterator, Out>();
+  test_sentinels<std::type_identity_t, Out>();
+}
+
+template <template <class> class Out>
+constexpr void test_proxy_in_iterators() {
+  test_sentinels<BidirectionalProxyIterator, Out>();
+  test_sentinels<RandomAccessProxyIterator, Out>();
+  test_sentinels<ContiguousProxyIterator, Out>();
+  test_sentinels<ProxyIterator, Out>();
+}
+
+constexpr bool test() {
+  test_in_iterators<bidirectional_iterator>();
+  test_in_iterators<random_access_iterator>();
+  test_in_iterators<contiguous_iterator>();
+  test_in_iterators<std::type_identity_t>();
+
+  test_proxy_in_iterators<BidirectionalProxyIterator>();
+  test_proxy_in_iterators<RandomAccessProxyIterator>();
+  test_proxy_in_iterators<ContiguousProxyIterator>();
+
+  { // check that ranges::dangling is returned
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<std::ranges::dangling, int*>> auto ret =
+      std::ranges::copy_backward(std::array {1, 2, 3, 4}, out.data() + out.size());
+    assert(ret.out == out.data());
+    assert((out == std::array{1, 2, 3, 4}));
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    std::array in {1, 2, 3, 4};
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<int*, int*>> auto ret =
+        std::ranges::copy_backward(std::views::all(in), out.data() + out.size());
+    assert(ret.in == in.data() + in.size());
+    assert(ret.out == out.data());
+    assert(in == out);
+  }
+
+  { // check that every element is copied exactly once
+    struct CopyOnce {
+      bool copied = false;
+      constexpr CopyOnce() = default;
+      constexpr CopyOnce(const CopyOnce& other) = delete;
+      constexpr CopyOnce& operator=(const CopyOnce& other) {
+        assert(!other.copied);
+        copied = true;
+        return *this;
+      }
+    };
+    {
+      std::array<CopyOnce, 4> in {};
+      std::array<CopyOnce, 4> out {};
+      auto ret = std::ranges::copy_backward(in.begin(), in.end(), out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));
+    }
+    {
+      std::array<CopyOnce, 4> in {};
+      std::array<CopyOnce, 4> out {};
+      auto ret = std::ranges::copy_backward(in, out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));
+    }
+  }
+
+  { // check that the range is copied backwards
+    struct OnlyBackwardsCopyable {
+      OnlyBackwardsCopyable* next = nullptr;
+      bool canCopy = false;
+      OnlyBackwardsCopyable() = default;
+      constexpr OnlyBackwardsCopyable& operator=(const OnlyBackwardsCopyable&) {
+        assert(canCopy);
+        if (next != nullptr)
+          next->canCopy = true;
+        return *this;
+      }
+    };
+    {
+      std::array<OnlyBackwardsCopyable, 3> in {};
+      std::array<OnlyBackwardsCopyable, 3> out {};
+      out[1].next = &out[0];
+      out[2].next = &out[1];
+      out[2].canCopy = true;
+      auto ret = std::ranges::copy_backward(in, out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(out[0].canCopy);
+      assert(out[1].canCopy);
+      assert(out[2].canCopy);
+    }
+    {
+      std::array<OnlyBackwardsCopyable, 3> in {};
+      std::array<OnlyBackwardsCopyable, 3> out {};
+      out[1].next = &out[0];
+      out[2].next = &out[1];
+      out[2].canCopy = true;
+      auto ret = std::ranges::copy_backward(in.begin(), in.end(), out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(out[0].canCopy);
+      assert(out[1].canCopy);
+      assert(out[2].canCopy);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_if.pass.cpp
new file mode 100644
index 0000000..64d8bf9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_if.pass.cpp
@@ -0,0 +1,243 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   requires indirectly_copyable<I, O>
+//   constexpr ranges::copy_if_result<I, O>
+//     ranges::copy_if(I first, S last, O result, Pred pred, Proj proj = {});
+// template<input_range R, weakly_incrementable O, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires indirectly_copyable<iterator_t<R>, O>
+//   constexpr ranges::copy_if_result<borrowed_iterator_t<R>, O>
+//     ranges::copy_if(R&& r, O result, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct Functor {
+  bool operator()(int);
+};
+
+template <class In, class Out = In, class Sent = sentinel_wrapper<In>, class Func = Functor>
+concept HasCopyIfIt = requires(In first, Sent last, Out result) { std::ranges::copy_if(first, last, result, Func{}); };
+
+static_assert(HasCopyIfIt<int*>);
+static_assert(!HasCopyIfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasCopyIfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasCopyIfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasCopyIfIt<int*, WeaklyIncrementableNotMovable>);
+struct NotIndirectlyCopyable {};
+static_assert(!HasCopyIfIt<int*, NotIndirectlyCopyable*>);
+static_assert(!HasCopyIfIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasCopyIfIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+static_assert(!HasCopyIfIt<int*, int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasCopyIfIt<int*, int*, int*, IndirectUnaryPredicateNotPredicate>);
+
+template <class Range, class Out, class Func = Functor>
+concept HasCopyIfR = requires(Range range, Out out) { std::ranges::copy_if(range, out, Func{}); };
+
+static_assert(HasCopyIfR<std::array<int, 10>, int*>);
+static_assert(!HasCopyIfR<InputRangeNotDerivedFrom, int*>);
+static_assert(!HasCopyIfR<InputRangeNotIndirectlyReadable, int*>);
+static_assert(!HasCopyIfR<InputRangeNotInputOrOutputIterator, int*>);
+static_assert(!HasCopyIfR<WeaklyIncrementableNotMovable, int*>);
+static_assert(!HasCopyIfR<UncheckedRange<NotIndirectlyCopyable*>, int*>);
+static_assert(!HasCopyIfR<InputRangeNotSentinelSemiregular, int*>);
+static_assert(!HasCopyIfR<InputRangeNotSentinelEqualityComparableWith, int*>);
+
+static_assert(std::is_same_v<std::ranges::copy_if_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+template <class In, class Out, class Sent = In>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      std::array in = {1, 2, 3, 4};
+      std::array<int, 4> out;
+      std::same_as<std::ranges::copy_if_result<In, Out>> auto ret =
+          std::ranges::copy_if(In(in.data()),
+                               Sent(In(in.data() + in.size())),
+                               Out(out.data()),
+                               [](int) { return true; });
+      assert(in == out);
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data() + out.size());
+    }
+    {
+      std::array in = {1, 2, 3, 4};
+      std::array<int, 4> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+      std::same_as<std::ranges::copy_if_result<In, Out>> auto ret =
+          std::ranges::copy_if(range, Out(out.data()), [](int) { return true; });
+      assert(in == out);
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data() + out.size());
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> in;
+      std::array<int, 0> out;
+      auto ret = std::ranges::copy_if(In(in.data()), Sent(In(in.data())), Out(out.data()), [](int) { return true; });
+      assert(base(ret.in) == in.data());
+      assert(base(ret.out) == out.data());
+    }
+    {
+      std::array<int, 0> in;
+      std::array<int, 0> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data())));
+      auto ret = std::ranges::copy_if(range, Out(out.data()), [](int) { return true; });
+      assert(base(ret.in) == in.data());
+      assert(base(ret.out) == out.data());
+    }
+  }
+
+  { // check that the predicate is used
+    {
+      std::array in = {4, 6, 87, 3, 88, 44, 45, 9};
+      std::array<int, 4> out;
+      auto ret = std::ranges::copy_if(In(in.data()),
+                                      Sent(In(in.data() + in.size())),
+                                      Out(out.data()),
+                                      [](int i) { return i % 2 == 0; });
+      assert((out == std::array{4, 6, 88, 44}));
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data() + out.size());
+    }
+    {
+      std::array in = {4, 6, 87, 3, 88, 44, 45, 9};
+      std::array<int, 4> out;
+      auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+      auto ret = std::ranges::copy_if(range, Out(out.data()), [](int i) { return i % 2 == 0; });
+      assert((out == std::array{4, 6, 88, 44}));
+      assert(base(ret.in) == in.data() + in.size());
+      assert(base(ret.out) == out.data() + out.size());
+    }
+  }
+}
+
+template <class Out>
+constexpr bool test_in_iterators() {
+  test_iterators<cpp17_input_iterator<int*>, Out, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<cpp20_input_iterator<int*>, Out, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>, Out>();
+  test_iterators<bidirectional_iterator<int*>, Out>();
+  test_iterators<random_access_iterator<int*>, Out>();
+  test_iterators<contiguous_iterator<int*>, Out>();
+  test_iterators<int*, Out>();
+
+  return true;
+}
+
+constexpr bool test() {
+  test_in_iterators<cpp17_output_iterator<int*>>();
+  test_in_iterators<cpp20_output_iterator<int*>>();
+  test_in_iterators<forward_iterator<int*>>();
+  test_in_iterators<bidirectional_iterator<int*>>();
+  test_in_iterators<random_access_iterator<int*>>();
+  test_in_iterators<contiguous_iterator<int*>>();
+  test_in_iterators<int*>();
+
+  { // check that std::invoke is used
+    {
+      struct S { int val; int other; };
+      std::array<S, 4> in = {{{4, 2}, {1, 3}, {3, 4}, {3, 5}}};
+      std::array<S, 2> out;
+      auto ret = std::ranges::copy_if(in.begin(), in.end(), out.begin(), [](int i) { return i == 3; }, &S::val);
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(out[0].val == 3);
+      assert(out[0].other == 4);
+      assert(out[1].val == 3);
+      assert(out[1].other == 5);
+    }
+    {
+      struct S { int val; int other; };
+      std::array<S, 4> in = {{{4, 2}, {1, 3}, {3, 4}, {3, 5}}};
+      std::array<S, 2> out;
+      auto ret = std::ranges::copy_if(in, out.begin(), [](int i) { return i == 3; }, &S::val);
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(out[0].val == 3);
+      assert(out[0].other == 4);
+      assert(out[1].val == 3);
+      assert(out[1].other == 5);
+    }
+  }
+
+  { // check that the complexity requirements are met
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int i) { ++predicateCount; return i != 0; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+
+      int a[] = {5, 4, 3, 2, 1};
+      int b[5];
+      std::ranges::copy_if(a, a + 5, b, pred, proj);
+      assert(predicateCount == 5);
+      assert(projectionCount == 5);
+    }
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int i) { ++predicateCount; return i != 0; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+
+      int a[] = {5, 4, 3, 2, 1};
+      int b[5];
+      std::ranges::copy_if(a, b, pred, proj);
+      assert(predicateCount == 5);
+      assert(projectionCount == 5);
+    }
+  }
+
+  { // test proxy iterator
+    {
+      std::array in = {4, 6, 87, 3, 88, 44, 45, 9};
+      std::array<int, 4> out;
+
+      ProxyRange proxyIn{in};
+      ProxyRange proxyOut{out};
+
+      std::ranges::copy_if(proxyIn.begin(), proxyIn.end(), proxyOut.begin(),
+                          [](auto const& i) { return i.data % 2 == 0; });
+      assert((out == std::array{4, 6, 88, 44}));
+    }
+    {
+      std::array in = {4, 6, 87, 3, 88, 44, 45, 9};
+      std::array<int, 4> out;
+
+      ProxyRange proxyIn{in};
+      ProxyRange proxyOut{out};
+
+      std::ranges::copy_if(proxyIn, proxyOut.begin(), [](const auto& i) { return i.data % 2 == 0; });
+      assert((out == std::array{4, 6, 88, 44}));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_n.pass.cpp
new file mode 100644
index 0000000..4a8963e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.copy/ranges.copy_n.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, weakly_incrementable O>
+//   requires indirectly_copyable<I, O>
+//   constexpr ranges::copy_n_result<I, O>
+//     ranges::copy_n(I first, iter_difference_t<I> n, O result);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class In, class Out = In, class Count = size_t>
+concept HasCopyNIt = requires(In in, Count count, Out out) { std::ranges::copy_n(in, count, out); };
+
+static_assert(HasCopyNIt<int*>);
+static_assert(!HasCopyNIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasCopyNIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasCopyNIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasCopyNIt<int*, WeaklyIncrementableNotMovable>);
+struct NotIndirectlyCopyable {};
+static_assert(!HasCopyNIt<int*, NotIndirectlyCopyable*>);
+static_assert(!HasCopyNIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasCopyNIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+static_assert(std::is_same_v<std::ranges::copy_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+template <class In, class Out, class Sent = In>
+constexpr void test_iterators() {
+  { // simple test
+    std::array in {1, 2, 3, 4};
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+      std::ranges::copy_n(In(in.data()), in.size(), Out(out.data()));
+    assert(in == out);
+    assert(base(ret.in) == in.data() + in.size());
+    assert(base(ret.out) == out.data() + out.size());
+  }
+
+  { // check that an empty range works
+    std::array<int, 0> in;
+    std::array<int, 0> out;
+    auto ret = std::ranges::copy_n(In(in.data()), in.size(), Out(out.begin()));
+    assert(base(ret.in) == in.data());
+    assert(base(ret.out) == out.data());
+  }
+}
+
+template <class Out>
+constexpr void test_in_iterators() {
+  test_iterators<cpp20_input_iterator<int*>, Out, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>, Out>();
+  test_iterators<bidirectional_iterator<int*>, Out>();
+  test_iterators<random_access_iterator<int*>, Out>();
+  test_iterators<contiguous_iterator<int*>, Out>();
+}
+
+template <class Out>
+constexpr void test_proxy_in_iterators() {
+  test_iterators<ProxyIterator<cpp20_input_iterator<int*>>, Out, sentinel_wrapper<ProxyIterator<cpp20_input_iterator<int*>>>>();
+  test_iterators<ProxyIterator<forward_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<bidirectional_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<random_access_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<contiguous_iterator<int*>>, Out>();
+}
+
+constexpr bool test() {
+  test_in_iterators<cpp20_input_iterator<int*>>();
+  test_in_iterators<forward_iterator<int*>>();
+  test_in_iterators<bidirectional_iterator<int*>>();
+  test_in_iterators<random_access_iterator<int*>>();
+  test_in_iterators<contiguous_iterator<int*>>();
+
+  test_proxy_in_iterators<ProxyIterator<cpp20_input_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<forward_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<bidirectional_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<random_access_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<contiguous_iterator<int*>>>();
+
+  { // check that every element is copied exactly once
+    struct CopyOnce {
+      bool copied = false;
+      constexpr CopyOnce() = default;
+      constexpr CopyOnce(const CopyOnce& other) = delete;
+      constexpr CopyOnce& operator=(const CopyOnce& other) {
+        assert(!other.copied);
+        copied = true;
+        return *this;
+      }
+    };
+    std::array<CopyOnce, 4> in {};
+    std::array<CopyOnce, 4> out {};
+    auto ret = std::ranges::copy_n(in.data(), in.size(), out.begin());
+    assert(ret.in == in.end());
+    assert(ret.out == out.end());
+    assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.copied; }));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/fill.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/fill.pass.cpp
new file mode 100644
index 0000000..da56ec3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/fill.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   requires OutputIterator<Iter, const T&>
+//   constexpr void      // constexpr after C++17
+//   fill(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 3, 4};
+
+    std::fill(std::begin(ia), std::end(ia), 5);
+
+    return std::all_of(std::begin(ia), std::end(ia), [](int a) {return a == 5; })
+        ;
+    }
+#endif
+
+template <class Iter>
+void
+test_char()
+{
+    const unsigned n = 4;
+    char ca[n] = {0};
+    std::fill(Iter(ca), Iter(ca+n), char(1));
+    assert(ca[0] == 1);
+    assert(ca[1] == 1);
+    assert(ca[2] == 1);
+    assert(ca[3] == 1);
+}
+
+template <class Iter>
+void
+test_int()
+{
+    const unsigned n = 4;
+    int ia[n] = {0};
+    std::fill(Iter(ia), Iter(ia+n), 1);
+    assert(ia[0] == 1);
+    assert(ia[1] == 1);
+    assert(ia[2] == 1);
+    assert(ia[3] == 1);
+}
+
+int main(int, char**)
+{
+    test_char<forward_iterator<char*> >();
+    test_char<bidirectional_iterator<char*> >();
+    test_char<random_access_iterator<char*> >();
+    test_char<char*>();
+
+    test_int<forward_iterator<int*> >();
+    test_int<bidirectional_iterator<int*> >();
+    test_int<random_access_iterator<int*> >();
+    test_int<int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/fill_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/fill_n.pass.cpp
new file mode 100644
index 0000000..6bb7842
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/fill_n.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class Iter, IntegralLike Size, class T>
+//   requires OutputIterator<Iter, const T&>
+//   constexpr OutputIterator      // constexpr after C++17
+//   fill_n(Iter first, Size n, const T& value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "user_defined_integral.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    const size_t N = 5;
+    int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger than N
+
+    auto it = std::fill_n(std::begin(ib), N, 5);
+    return it == (std::begin(ib) + N)
+        && std::all_of(std::begin(ib), it, [](int a) {return a == 5; })
+        && *it == 0 // don't overwrite the last value in the output array
+        ;
+    }
+#endif
+
+typedef UserDefinedIntegral<unsigned> UDI;
+
+template <class Iter>
+void
+test_char()
+{
+    char a[4] = {};
+    Iter it = std::fill_n(Iter(a), UDI(4), char(1));
+    assert(base(it) == a + 4);
+    assert(a[0] == 1);
+    assert(a[1] == 1);
+    assert(a[2] == 1);
+    assert(a[3] == 1);
+}
+
+template <class Iter>
+void
+test_int()
+{
+    int a[4] = {};
+    Iter it = std::fill_n(Iter(a), UDI(4), 1);
+    assert(base(it) == a + 4);
+    assert(a[0] == 1);
+    assert(a[1] == 1);
+    assert(a[2] == 1);
+    assert(a[3] == 1);
+}
+
+void
+test_int_array()
+{
+    int a[4] = {};
+    assert(std::fill_n(a, UDI(4), static_cast<char>(1)) == a + 4);
+    assert(a[0] == 1);
+    assert(a[1] == 1);
+    assert(a[2] == 1);
+    assert(a[3] == 1);
+}
+
+struct source {
+    source() : i(0) { }
+
+    operator int() const { return i++; }
+    mutable int i;
+};
+
+void
+test_int_array_struct_source()
+{
+    int a[4] = {};
+    assert(std::fill_n(a, UDI(4), source()) == a + 4);
+    assert(a[0] == 0);
+    assert(a[1] == 1);
+    assert(a[2] == 2);
+    assert(a[3] == 3);
+}
+
+struct test1 {
+    test1() : c(0) { }
+    test1(char xc) : c(xc + 1) { }
+    char c;
+};
+
+void
+test_struct_array()
+{
+    test1 test1a[4] = {};
+    assert(std::fill_n(test1a, UDI(4), static_cast<char>(10)) == test1a + 4);
+    assert(test1a[0].c == 11);
+    assert(test1a[1].c == 11);
+    assert(test1a[2].c == 11);
+    assert(test1a[3].c == 11);
+}
+
+class A
+{
+    char a_;
+public:
+    A() {}
+    explicit A(char a) : a_(a) {}
+    operator unsigned char() const {return 'b';}
+
+    friend bool operator==(const A& x, const A& y)
+        {return x.a_ == y.a_;}
+};
+
+void
+test5()
+{
+    A a[3];
+    assert(std::fill_n(&a[0], UDI(3), A('a')) == a+3);
+    assert(a[0] == A('a'));
+    assert(a[1] == A('a'));
+    assert(a[2] == A('a'));
+}
+
+struct Storage
+{
+  union
+  {
+    unsigned char a;
+    unsigned char b;
+  };
+};
+
+void test6()
+{
+  Storage foo[5];
+  std::fill_n(&foo[0], UDI(5), Storage());
+}
+
+
+int main(int, char**)
+{
+    test_char<cpp17_output_iterator<char*> >();
+    test_char<forward_iterator<char*> >();
+    test_char<bidirectional_iterator<char*> >();
+    test_char<random_access_iterator<char*> >();
+    test_char<char*>();
+
+    test_int<cpp17_output_iterator<int*> >();
+    test_int<forward_iterator<int*> >();
+    test_int<bidirectional_iterator<int*> >();
+    test_int<random_access_iterator<int*> >();
+    test_int<int*>();
+
+    test_int_array();
+    test_int_array_struct_source();
+    test_struct_array();
+
+    test5();
+    test6();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/ranges.fill.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/ranges.fill.pass.cpp
new file mode 100644
index 0000000..0697f4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/ranges.fill.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, output_iterator<const T&> O, sentinel_for<O> S>
+//   constexpr O ranges::fill(O first, S last, const T& value);
+// template<class T, output_range<const T&> R>
+//   constexpr borrowed_iterator_t<R> ranges::fill(R&& r, const T& value);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <string>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasFillIt = requires(Iter iter, Sent sent) { std::ranges::fill(iter, sent, int{}); };
+
+static_assert(HasFillIt<int*>);
+static_assert(!HasFillIt<OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasFillIt<OutputIteratorNotInputOrOutputIterator>);
+static_assert(!HasFillIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasFillIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range>
+concept HasFillR = requires(Range range) { std::ranges::fill(range, int{}); };
+
+static_assert(HasFillR<UncheckedRange<int*>>);
+static_assert(!HasFillR<OutputRangeNotIndirectlyWritable>);
+static_assert(!HasFillR<OutputRangeNotInputOrOutputIterator>);
+static_assert(!HasFillR<OutputRangeNotSentinelSemiregular>);
+static_assert(!HasFillR<OutputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[3];
+      std::same_as<It> auto ret = std::ranges::fill(It(a), Sent(It(a + 3)), 1);
+      assert(std::all_of(a, a + 3, [](int i) { return i == 1; }));
+      assert(base(ret) == a + 3);
+    }
+    {
+      int a[3];
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 3)));
+      std::same_as<It> auto ret = std::ranges::fill(range, 1);
+      assert(std::all_of(a, a + 3, [](int i) { return i == 1; }));
+      assert(base(ret) == a + 3);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> a;
+      auto ret = std::ranges::fill(It(a.data()), Sent(It(a.data())), 1);
+      assert(base(ret) == a.data());
+    }
+    {
+      std::array<int, 0> a;
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data())));
+      auto ret = std::ranges::fill(range, 1);
+      assert(base(ret) == a.data());
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<cpp17_output_iterator<int*>, sentinel_wrapper<cpp17_output_iterator<int*>>>();
+  test_iterators<cpp20_output_iterator<int*>, sentinel_wrapper<cpp20_output_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that every element is copied once
+    struct S {
+      bool copied = false;
+      constexpr S& operator=(const S&) {
+        copied = true;
+        return *this;
+      }
+    };
+    {
+      S a[5];
+      std::ranges::fill(a, a + 5, S {true});
+      assert(std::all_of(a, a + 5, [](S& s) { return s.copied; }));
+    }
+    {
+      S a[5];
+      std::ranges::fill(a, S {true});
+      assert(std::all_of(a, a + 5, [](S& s) { return s.copied; }));
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::fill(std::array<int, 10> {}, 1);
+  }
+
+  { // check that std::ranges::dangling isn't returned with a borrowing range
+    std::array<int, 10> a{};
+    [[maybe_unused]] std::same_as<std::array<int, 10>::iterator> decltype(auto) ret =
+        std::ranges::fill(std::views::all(a), 1);
+    assert(std::all_of(a.begin(), a.end(), [](int i) { return i == 1; }));
+  }
+
+  { // check that non-trivially copyable items are copied properly
+    {
+      std::array<std::string, 10> a;
+      auto ret = std::ranges::fill(a.begin(), a.end(), "long long string so no SSO");
+      assert(ret == a.data() + a.size());
+      assert(std::all_of(a.begin(), a.end(), [](auto& s) { return s == "long long string so no SSO"; }));
+    }
+    {
+      std::array<std::string, 10> a;
+      auto ret = std::ranges::fill(a, "long long string so no SSO");
+      assert(ret == a.data() + a.size());
+      assert(std::all_of(a.begin(), a.end(), [](auto& s) { return s == "long long string so no SSO"; }));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/ranges.fill_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/ranges.fill_n.pass.cpp
new file mode 100644
index 0000000..10ff385
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.fill/ranges.fill_n.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, output_iterator<const T&> O>
+//   constexpr O ranges::fill_n(O first, iter_difference_t<O> n, const T& value);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <string>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter>
+concept HasFillN = requires(Iter iter) { std::ranges::fill_n(iter, int{}, int{}); };
+
+struct WrongType {};
+
+static_assert(HasFillN<int*>);
+static_assert(!HasFillN<WrongType*>);
+static_assert(!HasFillN<OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasFillN<OutputIteratorNotInputOrOutputIterator>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  { // simple test
+    int a[3];
+    std::same_as<It> decltype(auto) ret = std::ranges::fill_n(It(a), 3, 1);
+    assert(std::all_of(a, a + 3, [](int i) { return i == 1; }));
+    assert(base(ret) == a + 3);
+  }
+
+  { // check that an empty range works
+    std::array<int, 0> a;
+    auto ret = std::ranges::fill_n(It(a.data()), 0, 1);
+    assert(base(ret) == a.data());
+  }
+}
+
+constexpr bool test() {
+  test_iterators<cpp17_output_iterator<int*>, sentinel_wrapper<cpp17_output_iterator<int*>>>();
+  test_iterators<cpp20_output_iterator<int*>, sentinel_wrapper<cpp20_output_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that every element is copied once
+    struct S {
+      bool copied = false;
+      constexpr S& operator=(const S&) {
+        assert(!copied);
+        copied = true;
+        return *this;
+      }
+    };
+
+    S a[5];
+    std::ranges::fill_n(a, 5, S {});
+    assert(std::all_of(a, a + 5, [](S& s) { return s.copied; }));
+  }
+
+  { // check that non-trivially copyable items are copied properly
+    std::array<std::string, 10> a;
+    auto ret = std::ranges::fill_n(a.data(), 10, "long long string so no SSO");
+    assert(ret == a.data() + a.size());
+    assert(std::all_of(a.begin(), a.end(), [](auto& s) { return s == "long long string so no SSO"; }));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/generate.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/generate.pass.cpp
new file mode 100644
index 0000000..29d32d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/generate.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, Callable Generator>
+//   requires OutputIterator<Iter, Generator::result_type>
+//         && CopyConstructible<Generator>
+//   constexpr void      // constexpr after c++17
+//   generate(Iter first, Iter last, Generator gen);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct gen_test
+{
+    TEST_CONSTEXPR int operator()() const {return 1;}
+};
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 3, 4};
+
+    std::generate(std::begin(ia), std::end(ia), gen_test());
+
+    return std::all_of(std::begin(ia), std::end(ia), [](int x) { return x == 1; })
+        ;
+    }
+#endif
+
+
+template <class Iter>
+void
+test()
+{
+    const unsigned n = 4;
+    int ia[n] = {0};
+    std::generate(Iter(ia), Iter(ia+n), gen_test());
+    assert(ia[0] == 1);
+    assert(ia[1] == 1);
+    assert(ia[2] == 1);
+    assert(ia[3] == 1);
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/generate_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/generate_n.pass.cpp
new file mode 100644
index 0000000..3eb361a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/generate_n.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class Iter, IntegralLike Size, Callable Generator>
+//   requires OutputIterator<Iter, Generator::result_type>
+//         && CopyConstructible<Generator>
+//   constexpr void      // constexpr after c++17
+//   generate_n(Iter first, Size n, Generator gen);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "user_defined_integral.h"
+
+TEST_MSVC_DIAGNOSTIC_IGNORED(4244) // conversion from 'const double' to 'int', possible loss of data
+
+struct gen_test
+{
+    TEST_CONSTEXPR int operator()() const {return 2;}
+};
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    const size_t N = 5;
+    int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger than N
+
+    auto it = std::generate_n(std::begin(ib), N, gen_test());
+
+    return it == (std::begin(ib) + N)
+        && std::all_of(std::begin(ib), it, [](int x) { return x == 2; })
+        && *it == 0 // don't overwrite the last value in the output array
+        ;
+    }
+#endif
+
+
+template <class Iter, class Size>
+void
+test2()
+{
+    const unsigned n = 4;
+    int ia[n] = {0};
+    assert(std::generate_n(Iter(ia), Size(n), gen_test()) == Iter(ia+n));
+    assert(ia[0] == 2);
+    assert(ia[1] == 2);
+    assert(ia[2] == 2);
+    assert(ia[3] == 2);
+}
+
+template <class Iter>
+void
+test()
+{
+    test2<Iter, int>();
+    test2<Iter, unsigned int>();
+    test2<Iter, long>();
+    test2<Iter, unsigned long>();
+    test2<Iter, UserDefinedIntegral<unsigned> >();
+    test2<Iter, float>();
+    test2<Iter, double>();  // this is PR#35498
+    test2<Iter, long double>();
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/ranges_generate.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/ranges_generate.pass.cpp
new file mode 100644
index 0000000..7cd53dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/ranges_generate.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_or_output_iterator O, sentinel_for<O> S, copy_constructible F>
+//   requires invocable<F&> && indirectly_writable<O, invoke_result_t<F&>>
+//   constexpr O generate(O first, S last, F gen);                                                  // Since C++20
+//
+// template<class R, copy_constructible F>
+//   requires invocable<F&> && output_range<R, invoke_result_t<F&>>
+//   constexpr borrowed_iterator_t<R> generate(R&& r, F gen);                                       // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct IntGen {
+  int operator()() const;
+};
+
+struct UncopyableGen {
+  UncopyableGen(const UncopyableGen&) = delete;
+  int operator()() const;
+};
+static_assert(!std::copy_constructible<UncopyableGen>);
+static_assert(std::invocable<UncopyableGen>);
+
+struct UninvocableGen {
+};
+static_assert(std::copy_constructible<UninvocableGen>);
+static_assert(!std::invocable<UninvocableGen>);
+
+struct IntPtrGen {
+  int* operator()() const;
+};
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Gen = IntGen>
+concept HasGenerateIter =
+    requires(Iter&& iter, Sent&& sent, Gen&& gen) {
+      std::ranges::generate(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Gen>(gen));
+    };
+
+static_assert(HasGenerateIter<int*, int*, IntGen>);
+
+// !input_or_output_iterator<O>
+static_assert(!HasGenerateIter<InputIteratorNotInputOrOutputIterator>);
+
+// !sentinel_for<S, O>
+static_assert(!HasGenerateIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasGenerateIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !copy_constructible<F>
+static_assert(!HasGenerateIter<int*, int*, UncopyableGen>);
+
+// !invocable<F&>
+static_assert(!HasGenerateIter<int*, int*, UninvocableGen>);
+
+// !indirectly_writable<O, invoke_result_t<F&>>
+static_assert(!HasGenerateIter<int*, int*, IntPtrGen>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Gen = IntGen>
+concept HasGenerateRange =
+    requires(Range&& range, Gen&& gen) {
+      std::ranges::generate(std::forward<Range>(range), std::forward<Gen>(gen));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasGenerateRange<R<int*>, IntGen>);
+
+// !copy_constructible<F>
+static_assert(!HasGenerateRange<R<int*>, UncopyableGen>);
+
+// !invocable<F&>
+static_assert(!HasGenerateRange<R<int*>, UninvocableGen>);
+
+// !output_range<R, invoke_result_t<F&>>
+static_assert(!HasGenerateRange<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasGenerateRange<R<int*>, IntPtrGen>);
+
+template <class Iter, class Sent, size_t N, class Gen>
+constexpr void test_one(const std::array<int, N> input, Gen gen, std::array<int, N> expected) {
+  { // (iterator, sentinel) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+
+    std::same_as<Iter> decltype(auto) result = std::ranges::generate(std::move(begin), std::move(end), gen);
+    assert(base(result) == in.data() + in.size());
+    assert(in == expected);
+  }
+
+  { // (range) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+    auto range = std::ranges::subrange(std::move(begin), std::move(end));
+
+    // For some reason `ranges::generate` accepts both input and output iterators but only output (not input) ranges.
+    if constexpr (std::ranges::output_range<decltype(range), std::invoke_result_t<Gen&>>) {
+      std::same_as<Iter> decltype(auto) result = std::ranges::generate(std::move(range), gen);
+      assert(base(result) == in.data() + in.size());
+      assert(in == expected);
+    }
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iter_sent() {
+  auto gen = [ctr = 1] () mutable { return ctr++; };
+
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, gen, {});
+  // 1-element sequence.
+  test_one<Iter, Sent>(std::array{-10}, gen, {1});
+  // Longer sequence.
+  test_one<Iter, Sent>(std::array<int, 5>{}, gen, {1, 2, 3, 4, 5});
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  if constexpr (std::sentinel_for<Iter, Iter>) {
+    test_iter_sent<Iter, Iter>();
+  }
+  test_iter_sent<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iter<cpp17_input_iterator<int*>>();
+  test_iter<cpp20_input_iterator<int*>>();
+  test_iter<cpp17_output_iterator<int*>>();
+  test_iter<cpp20_output_iterator<int*>>();
+  test_iter<forward_iterator<int*>>();
+  test_iter<bidirectional_iterator<int*>>();
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // Complexity: exactly N evaluations of `gen()` and assignments.
+    struct AssignedOnce {
+      bool assigned = false;
+      constexpr AssignedOnce& operator=(const AssignedOnce&) {
+        assert(!assigned);
+        assigned = true;
+        return *this;
+      }
+    };
+
+    { // (iterator, sentinel) overload.
+      int gen_invocations = 0;
+      auto gen = [&gen_invocations] { ++gen_invocations; return AssignedOnce(); };
+      constexpr size_t N = 10;
+      std::array<AssignedOnce, N> in;
+
+      std::ranges::generate(in.begin(), in.end(), gen);
+      assert(std::ranges::all_of(in, &AssignedOnce::assigned));
+      assert(gen_invocations == N);
+    }
+
+    { // (range) overload.
+      int gen_invocations = 0;
+      auto gen = [&gen_invocations] { ++gen_invocations; return AssignedOnce(); };
+      constexpr size_t N = 10;
+      std::array<AssignedOnce, N> in;
+
+      std::ranges::generate(in, gen);
+      assert(std::ranges::all_of(in, &AssignedOnce::assigned));
+      assert(gen_invocations == N);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/ranges_generate_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/ranges_generate_n.pass.cpp
new file mode 100644
index 0000000..6a67832
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.generate/ranges_generate_n.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_or_output_iterator O, copy_constructible F>
+//   requires invocable<F&> && indirectly_writable<O, invoke_result_t<F&>>
+//   constexpr O generate_n(O first, iter_difference_t<O> n, F gen);                                // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct IntGen {
+  int operator()() const;
+};
+
+struct UncopyableGen {
+  UncopyableGen(const UncopyableGen&) = delete;
+  int operator()() const;
+};
+static_assert(!std::copy_constructible<UncopyableGen>);
+static_assert(std::invocable<UncopyableGen>);
+
+struct UninvocableGen {
+};
+static_assert(std::copy_constructible<UninvocableGen>);
+static_assert(!std::invocable<UninvocableGen>);
+
+struct IntPtrGen {
+  int* operator()() const;
+};
+
+// Test type constraints.
+// ======================================================
+
+template <class Iter = int*, class Gen = IntGen>
+concept HasGenerateNIter =
+    requires(Iter&& iter, Gen&& gen) {
+      std::ranges::generate_n(std::forward<Iter>(iter), 0, std::forward<Gen>(gen));
+    };
+
+static_assert(HasGenerateNIter<int*, IntGen>);
+
+// !input_or_output_iterator<O>
+static_assert(!HasGenerateNIter<InputIteratorNotInputOrOutputIterator>);
+
+// !copy_constructible<F>
+static_assert(!HasGenerateNIter<int*, UncopyableGen>);
+
+// !invocable<F&>
+static_assert(!HasGenerateNIter<int*, UninvocableGen>);
+
+// !indirectly_writable<O, invoke_result_t<F&>>
+static_assert(!HasGenerateNIter<int*, IntPtrGen>);
+
+template <class Iter, size_t N, class Gen>
+constexpr void test_one(std::array<int, N> in, size_t n, Gen gen, std::array<int, N> expected) {
+  assert(n <= N);
+
+  auto begin = Iter(in.data());
+
+  std::same_as<Iter> decltype(auto) result = std::ranges::generate_n(std::move(begin), n, gen);
+  assert(base(result) == in.data() + n);
+  assert(in == expected);
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  auto gen = [ctr = 1] () mutable { return ctr++; };
+
+  // Empty sequence.
+  test_one<Iter, 0>({}, 0, gen, {});
+  // 1-element sequence, n = 0.
+  test_one<Iter>(std::array{-10}, 0, gen, {-10});
+  // 1-element sequence, n = 1.
+  test_one<Iter>(std::array{-10}, 1, gen, {1});
+  // Longer sequence, n = 3.
+  test_one<Iter>(std::array{-10, -20, -30, -40, -50}, 3, gen, {1, 2, 3, -40, -50});
+  // Longer sequence, n = 5.
+  test_one<Iter>(std::array<int, 5>{}, 5, gen, {1, 2, 3, 4, 5});
+}
+
+constexpr void test_iterators() {
+  test_iter<cpp17_input_iterator<int*>>();
+  test_iter<cpp20_input_iterator<int*>>();
+  test_iter<cpp17_output_iterator<int*>>();
+  test_iter<cpp20_output_iterator<int*>>();
+  test_iter<forward_iterator<int*>>();
+  test_iter<bidirectional_iterator<int*>>();
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // Complexity: exactly N evaluations of `gen()` and assignments.
+    struct AssignedOnce {
+      bool assigned = false;
+      constexpr AssignedOnce& operator=(const AssignedOnce&) {
+        assert(!assigned);
+        assigned = true;
+        return *this;
+      }
+    };
+
+    int gen_invocations = 0;
+    auto gen = [&gen_invocations] { ++gen_invocations; return AssignedOnce(); };
+    constexpr size_t N1 = 10;
+    constexpr size_t N2 = N1 / 2;
+    std::array<AssignedOnce, N1> in;
+
+    auto result = std::ranges::generate_n(in.begin(), N2, gen);
+    assert(std::ranges::all_of(std::ranges::subrange(in.begin(), result), &AssignedOnce::assigned));
+    assert(std::ranges::none_of(std::ranges::subrange(result, in.end()), &AssignedOnce::assigned));
+    assert(gen_invocations == N2);
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/contiguous_trivial_optimization.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/contiguous_trivial_optimization.pass.cpp
new file mode 100644
index 0000000..fe0b7ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/contiguous_trivial_optimization.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// We optimize std::copy(_backward) and std::move(_backward) into memmove
+// when the iterator is trivial and contiguous and the type in question
+// is also trivially (copyable, movable). This test verifies that the
+// optimization never eliminates an actually non-trivial copy or move.
+
+#include <algorithm>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct TMBNTC {
+    int *p;
+    constexpr TMBNTC(int& copies) : p(&copies) {}
+    constexpr TMBNTC(const TMBNTC&) = default;
+    TEST_CONSTEXPR_CXX14 TMBNTC& operator=(TMBNTC&&) = default;
+    TEST_CONSTEXPR_CXX14 TMBNTC& operator=(const TMBNTC&) { ++*p; return *this; }
+};
+
+TEST_CONSTEXPR_CXX20 bool
+test_trivial_moveassign_but_no_trivial_copyassign()
+{
+    int copies = 0;
+    TMBNTC ia[] = { copies, copies, copies, copies };
+    TMBNTC ib[] = { copies, copies, copies, copies };
+    std::copy(ia, ia+4, ib);
+    assert(copies == 4);
+    copies = 0;
+    std::copy_backward(ia, ia+4, ib+4);
+    assert(copies == 4);
+
+    copies = 0;
+    std::copy(std::make_move_iterator(ia), std::make_move_iterator(ia+4), ib);
+    assert(copies == 0);
+    std::copy_backward(std::make_move_iterator(ia), std::make_move_iterator(ia+4), ib+4);
+    assert(copies == 0);
+
+    std::move(ia, ia+4, ib);
+    assert(copies == 0);
+    std::move_backward(ia, ia+4, ib+4);
+    assert(copies == 0);
+
+    return true;
+}
+
+struct TCBNTM {
+    int *p;
+    constexpr TCBNTM(int& moves) : p(&moves) {}
+    constexpr TCBNTM(const TCBNTM&) = default;
+    TEST_CONSTEXPR_CXX14 TCBNTM& operator=(TCBNTM&&) { ++*p; return *this; }
+    TEST_CONSTEXPR_CXX14 TCBNTM& operator=(const TCBNTM&) = default;
+};
+
+TEST_CONSTEXPR_CXX20 bool
+test_trivial_copyassign_but_no_trivial_moveassign()
+{
+    int moves = 0;
+    TCBNTM ia[] = { moves, moves, moves, moves };
+    TCBNTM ib[] = { moves, moves, moves, moves };
+    std::move(ia, ia+4, ib);
+    assert(moves == 4);
+    moves = 0;
+    std::move_backward(ia, ia+4, ib+4);
+    assert(moves == 4);
+
+    moves = 0;
+    std::copy(std::make_move_iterator(ia), std::make_move_iterator(ia+4), ib);
+    assert(moves == 4);
+    moves = 0;
+    std::copy_backward(std::make_move_iterator(ia), std::make_move_iterator(ia+4), ib+4);
+    assert(moves == 4);
+
+    moves = 0;
+    std::copy(ia, ia+4, ib);
+    assert(moves == 0);
+    std::copy_backward(ia, ia+4, ib+4);
+    assert(moves == 0);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test_trivial_moveassign_but_no_trivial_copyassign();
+    test_trivial_copyassign_but_no_trivial_moveassign();
+
+#if TEST_STD_VER > 17
+    static_assert(test_trivial_moveassign_but_no_trivial_copyassign());
+    static_assert(test_trivial_copyassign_but_no_trivial_moveassign());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move.pass.cpp
new file mode 100644
index 0000000..5e0837e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move.pass.cpp
@@ -0,0 +1,192 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, typename OutIter>
+//   requires OutputIterator<OutIter, RvalueOf<InIter::reference>::type>
+//   OutIter
+//   move(InIter first, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX17 bool
+test()
+{
+    const unsigned N = 1000;
+    int ia[N] = {};
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    int ib[N] = {0};
+
+    OutIter r = std::move(InIter(ia), InIter(ia+N), OutIter(ib));
+    assert(base(r) == ib+N);
+    for (unsigned i = 0; i < N; ++i)
+        assert(ia[i] == ib[i]);
+
+    return true;
+}
+
+#if TEST_STD_VER >= 11
+template <class InIter, class OutIter>
+void
+test1()
+{
+    const unsigned N = 100;
+    std::unique_ptr<int> ia[N];
+    for (unsigned i = 0; i < N; ++i)
+        ia[i].reset(new int(i));
+    std::unique_ptr<int> ib[N];
+
+    OutIter r = std::move(InIter(ia), InIter(ia+N), OutIter(ib));
+    assert(base(r) == ib+N);
+    for (unsigned i = 0; i < N; ++i)
+        assert(*ib[i] == static_cast<int>(i));
+}
+#endif
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER >= 11
+    test1<cpp17_input_iterator<std::unique_ptr<int>*>, cpp17_output_iterator<std::unique_ptr<int>*> >();
+    test1<cpp17_input_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<cpp17_input_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<cpp17_input_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<cpp17_input_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<forward_iterator<std::unique_ptr<int>*>, cpp17_output_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, cpp17_output_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<random_access_iterator<std::unique_ptr<int>*>, cpp17_output_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<std::unique_ptr<int>*, cpp17_output_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, forward_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, std::unique_ptr<int>*>();
+#endif // TEST_STD_VER >= 11
+
+#if TEST_STD_VER > 17
+    test<cpp17_input_iterator<const int*>, contiguous_iterator<int*>>();
+    test<forward_iterator<const int*>, contiguous_iterator<int*>>();
+    test<bidirectional_iterator<const int*>, contiguous_iterator<int*>>();
+    test<random_access_iterator<const int*>, contiguous_iterator<int*>>();
+    test<const int*, contiguous_iterator<int*>>();
+    test<contiguous_iterator<const int*>, cpp17_output_iterator<int*>>();
+    test<contiguous_iterator<const int*>, forward_iterator<int*>>();
+    test<contiguous_iterator<const int*>, bidirectional_iterator<int*>>();
+    test<contiguous_iterator<const int*>, random_access_iterator<int*>>();
+    test<contiguous_iterator<const int*>, int*>();
+    test<contiguous_iterator<const int*>, contiguous_iterator<int*>>();
+
+    test1<cpp17_input_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<forward_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<random_access_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<std::unique_ptr<int>*, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, cpp17_output_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+
+    static_assert(test<cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >());
+    static_assert(test<cpp17_input_iterator<const int*>, forward_iterator<int*> >());
+    static_assert(test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<cpp17_input_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<cpp17_input_iterator<const int*>, int*>());
+
+    static_assert(test<forward_iterator<const int*>, cpp17_input_iterator<int*> >());
+    static_assert(test<forward_iterator<const int*>, forward_iterator<int*> >());
+    static_assert(test<forward_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<forward_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<forward_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<forward_iterator<const int*>, int*>());
+
+    static_assert(test<bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, forward_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, int*>());
+
+    static_assert(test<random_access_iterator<const int*>, cpp17_input_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, forward_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, int*>());
+
+    static_assert(test<contiguous_iterator<const int*>, cpp17_input_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, forward_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, int*>());
+
+    static_assert(test<const int*, cpp17_input_iterator<int*> >());
+    static_assert(test<const int*, forward_iterator<int*> >());
+    static_assert(test<const int*, bidirectional_iterator<int*> >());
+    static_assert(test<const int*, random_access_iterator<int*> >());
+    static_assert(test<const int*, contiguous_iterator<int*> >());
+    static_assert(test<const int*, int*>());
+#endif // TEST_STD_VER > 17
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move_backward.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move_backward.pass.cpp
new file mode 100644
index 0000000..4aafcd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/move_backward.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator InIter, BidirectionalIterator OutIter>
+//   requires OutputIterator<OutIter, RvalueOf<InIter::reference>::type>
+//   OutIter
+//   move_backward(InIter first, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX17 bool
+test()
+{
+    const unsigned N = 1000;
+    int ia[N] = {};
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    int ib[N] = {0};
+
+    OutIter r = std::move_backward(InIter(ia), InIter(ia+N), OutIter(ib+N));
+    assert(base(r) == ib);
+    for (unsigned i = 0; i < N; ++i)
+        assert(ia[i] == ib[i]);
+
+    return true;
+}
+
+#if TEST_STD_VER >= 11
+template <class InIter, class OutIter>
+void
+test1()
+{
+    const unsigned N = 100;
+    std::unique_ptr<int> ia[N];
+    for (unsigned i = 0; i < N; ++i)
+        ia[i].reset(new int(i));
+    std::unique_ptr<int> ib[N];
+
+    OutIter r = std::move_backward(InIter(ia), InIter(ia+N), OutIter(ib+N));
+    assert(base(r) == ib);
+    for (unsigned i = 0; i < N; ++i)
+        assert(*ib[i] == static_cast<int>(i));
+}
+#endif
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER >= 11
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<random_access_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<std::unique_ptr<int>*, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, std::unique_ptr<int>*>();
+#endif // TEST_STD_VER >= 11
+
+#if TEST_STD_VER > 17
+    test<bidirectional_iterator<const int*>, contiguous_iterator<int*>>();
+    test<random_access_iterator<const int*>, contiguous_iterator<int*>>();
+    test<const int*, contiguous_iterator<int*>>();
+    test<contiguous_iterator<const int*>, bidirectional_iterator<int*>>();
+    test<contiguous_iterator<const int*>, random_access_iterator<int*>>();
+    test<contiguous_iterator<const int*>, int*>();
+    test<contiguous_iterator<const int*>, contiguous_iterator<int*>>();
+
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<random_access_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<std::unique_ptr<int>*, contiguous_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*>>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+    test1<contiguous_iterator<std::unique_ptr<int>*>, contiguous_iterator<std::unique_ptr<int>*>>();
+
+    static_assert(test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<const int*>, int*>());
+
+    static_assert(test<random_access_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<random_access_iterator<const int*>, int*>());
+
+    static_assert(test<contiguous_iterator<const int*>, bidirectional_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, random_access_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, contiguous_iterator<int*> >());
+    static_assert(test<contiguous_iterator<const int*>, int*>());
+
+    static_assert(test<const int*, bidirectional_iterator<int*> >());
+    static_assert(test<const int*, random_access_iterator<int*> >());
+    static_assert(test<const int*, contiguous_iterator<int*> >());
+    static_assert(test<const int*, int*>());
+#endif // TEST_STD_VER > 17
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/ranges.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/ranges.move.pass.cpp
new file mode 100644
index 0000000..18ac692
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/ranges.move.pass.cpp
@@ -0,0 +1,361 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O>
+//   requires indirectly_movable<I, O>
+//   constexpr ranges::move_result<I, O>
+//     ranges::move(I first, S last, O result);
+// template<input_range R, weakly_incrementable O>
+//   requires indirectly_movable<iterator_t<R>, O>
+//   constexpr ranges::move_result<borrowed_iterator_t<R>, O>
+//     ranges::move(R&& r, O result);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <deque>
+#include <ranges>
+#include <vector>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+template <class In, class Out = In, class Sent = sentinel_wrapper<In>>
+concept HasMoveIt = requires(In in, Sent sent, Out out) { std::ranges::move(in, sent, out); };
+
+static_assert(HasMoveIt<int*>);
+static_assert(!HasMoveIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasMoveIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasMoveIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasMoveIt<int*, WeaklyIncrementableNotMovable>);
+struct NotIndirectlyMovable {};
+static_assert(!HasMoveIt<int*, NotIndirectlyMovable*>);
+static_assert(!HasMoveIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasMoveIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range, class Out>
+concept HasMoveR = requires(Range range, Out out) { std::ranges::move(range, out); };
+
+static_assert(HasMoveR<std::array<int, 10>, int*>);
+static_assert(!HasMoveR<InputRangeNotDerivedFrom, int*>);
+static_assert(!HasMoveR<InputRangeNotIndirectlyReadable, int*>);
+static_assert(!HasMoveR<InputRangeNotInputOrOutputIterator, int*>);
+static_assert(!HasMoveR<WeaklyIncrementableNotMovable, int*>);
+static_assert(!HasMoveR<UncheckedRange<NotIndirectlyMovable*>, int*>);
+static_assert(!HasMoveR<InputRangeNotSentinelSemiregular, int*>);
+static_assert(!HasMoveR<InputRangeNotSentinelEqualityComparableWith, int*>);
+static_assert(!HasMoveR<UncheckedRange<int*>, WeaklyIncrementableNotMovable>);
+
+static_assert(std::is_same_v<std::ranges::move_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+template <class In, class Out, class Sent, int N>
+constexpr void test(std::array<int, N> in) {
+  {
+    std::array<int, N> out;
+    std::same_as<std::ranges::in_out_result<In, Out>> decltype(auto) ret =
+      std::ranges::move(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data()));
+    assert(in == out);
+    assert(base(ret.in) == in.data() + in.size());
+    assert(base(ret.out) == out.data() + out.size());
+  }
+  {
+    std::array<int, N> out;
+    auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+    std::same_as<std::ranges::in_out_result<In, Out>> decltype(auto) ret =
+        std::ranges::move(range, Out(out.data()));
+    assert(in == out);
+    assert(base(ret.in) == in.data() + in.size());
+    assert(base(ret.out) == out.data() + out.size());
+  }
+}
+
+template <class InContainer, class OutContainer, class In, class Out, class Sent = In>
+constexpr void test_containers() {
+  {
+    InContainer in {1, 2, 3, 4};
+    OutContainer out(4);
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+      std::ranges::move(In(in.begin()), Sent(In(in.end())), Out(out.begin()));
+    assert(std::ranges::equal(in, out));
+    assert(base(ret.in) == in.end());
+    assert(base(ret.out) == out.end());
+  }
+  {
+    InContainer in {1, 2, 3, 4};
+    OutContainer out(4);
+    auto range = std::ranges::subrange(In(in.begin()), Sent(In(in.end())));
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret = std::ranges::move(range, Out(out.begin()));
+    assert(std::ranges::equal(in, out));
+    assert(base(ret.in) == in.end());
+    assert(base(ret.out) == out.end());
+  }
+}
+
+template <class In, class Out, class Sent = In>
+constexpr void test_iterators() {
+  // simple test
+  test<In, Out, Sent, 4>({1, 2, 3, 4});
+  // check that an empty range works
+  test<In, Out, Sent, 0>({});
+}
+
+template <template <class> class In, template <class> class Out>
+constexpr void test_sentinels() {
+  test_iterators<In<int*>, Out<int*>>();
+  test_iterators<In<int*>, Out<int*>, sized_sentinel<In<int*>>>();
+  test_iterators<In<int*>, Out<int*>, sentinel_wrapper<In<int*>>>();
+
+  if (!std::is_constant_evaluated()) {
+    if constexpr (!std::is_same_v<In<int*>, contiguous_iterator<int*>> &&
+                  !std::is_same_v<Out<int*>, contiguous_iterator<int*>> &&
+                  !std::is_same_v<In<int*>, ContiguousProxyIterator<int*>> &&
+                  !std::is_same_v<Out<int*>, ContiguousProxyIterator<int*>>) {
+      test_containers<std::deque<int>,
+                      std::deque<int>,
+                      In<std::deque<int>::iterator>,
+                      Out<std::deque<int>::iterator>>();
+      test_containers<std::deque<int>,
+                      std::vector<int>,
+                      In<std::deque<int>::iterator>,
+                      Out<std::vector<int>::iterator>>();
+      test_containers<std::vector<int>,
+                      std::deque<int>,
+                      In<std::vector<int>::iterator>,
+                      Out<std::deque<int>::iterator>>();
+      test_containers<std::vector<int>,
+                      std::vector<int>,
+                      In<std::vector<int>::iterator>,
+                      Out<std::vector<int>::iterator>>();
+    }
+  }
+}
+
+template <template <class> class Out>
+constexpr void test_in_iterators() {
+  test_iterators<cpp20_input_iterator<int*>, Out<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_sentinels<forward_iterator, Out>();
+  test_sentinels<bidirectional_iterator, Out>();
+  test_sentinels<random_access_iterator, Out>();
+  test_sentinels<contiguous_iterator, Out>();
+  test_sentinels<std::type_identity_t, Out>();
+}
+
+template <template <class> class Out>
+constexpr void test_proxy_in_iterators() {
+  test_iterators<ProxyIterator<cpp20_input_iterator<int*>>,
+                 Out<int*>,
+                 sentinel_wrapper<ProxyIterator<cpp20_input_iterator<int*>>>>();
+  test_sentinels<ForwardProxyIterator, Out>();
+  test_sentinels<BidirectionalProxyIterator, Out>();
+  test_sentinels<RandomAccessProxyIterator, Out>();
+  test_sentinels<ContiguousProxyIterator, Out>();
+  test_sentinels<ProxyIterator, Out>();
+}
+
+struct IteratorWithMoveIter {
+  using value_type = int;
+  using difference_type = int;
+  explicit IteratorWithMoveIter() = default;
+  int* ptr;
+  constexpr IteratorWithMoveIter(int* ptr_) : ptr(ptr_) {}
+
+  constexpr int& operator*() const; // iterator with iter_move should not be dereferenced
+
+  constexpr IteratorWithMoveIter& operator++() { ++ptr; return *this; }
+  constexpr IteratorWithMoveIter operator++(int) { auto ret = *this; ++*this; return ret; }
+
+  friend constexpr int iter_move(const IteratorWithMoveIter&) { return 42; }
+
+  constexpr bool operator==(const IteratorWithMoveIter& other) const = default;
+};
+
+// cpp17_intput_iterator has a defaulted template argument
+template <class Iter>
+using Cpp17InIter = cpp17_input_iterator<Iter>;
+
+constexpr bool test() {
+  test_in_iterators<cpp17_output_iterator>();
+  test_in_iterators<cpp20_output_iterator>();
+  test_in_iterators<Cpp17InIter>();
+  test_in_iterators<cpp20_input_iterator>();
+  test_in_iterators<forward_iterator>();
+  test_in_iterators<bidirectional_iterator>();
+  test_in_iterators<random_access_iterator>();
+  test_in_iterators<contiguous_iterator>();
+  test_in_iterators<std::type_identity_t>();
+
+  test_proxy_in_iterators<Cpp20InputProxyIterator>();
+  test_proxy_in_iterators<ForwardProxyIterator>();
+  test_proxy_in_iterators<BidirectionalProxyIterator>();
+  test_proxy_in_iterators<RandomAccessProxyIterator>();
+  test_proxy_in_iterators<ContiguousProxyIterator>();
+  test_proxy_in_iterators<ProxyIterator>();
+
+  { // check that a move-only type works
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      std::ranges::move(a, std::begin(b));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      std::ranges::move(std::begin(a), std::end(a), std::begin(b));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+  }
+
+  { // check that a move-only type works for ProxyIterator
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      ProxyRange proxyA{a};
+      ProxyRange proxyB{b};
+      std::ranges::move(proxyA, std::begin(proxyB));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      ProxyRange proxyA{a};
+      ProxyRange proxyB{b};
+      std::ranges::move(std::begin(proxyA), std::end(proxyA), std::begin(proxyB));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+  }
+
+  { // check that ranges::dangling is returned
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<std::ranges::dangling, int*>> decltype(auto) ret =
+      std::ranges::move(std::array {1, 2, 3, 4}, out.data());
+    assert(ret.out == out.data() + 4);
+    assert((out == std::array{1, 2, 3, 4}));
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    std::array in {1, 2, 3, 4};
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<int*, int*>> decltype(auto) ret =
+        std::ranges::move(std::views::all(in), out.data());
+    assert(ret.in == in.data() + 4);
+    assert(ret.out == out.data() + 4);
+    assert(in == out);
+  }
+
+  { // check that every element is moved exactly once
+    struct MoveOnce {
+      bool moved = false;
+      constexpr MoveOnce() = default;
+      constexpr MoveOnce(const MoveOnce& other) = delete;
+      constexpr MoveOnce& operator=(MoveOnce&& other) {
+        assert(!other.moved);
+        moved = true;
+        return *this;
+      }
+    };
+    {
+      std::array<MoveOnce, 4> in {};
+      std::array<MoveOnce, 4> out {};
+      auto ret = std::ranges::move(in.begin(), in.end(), out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.moved; }));
+    }
+    {
+      std::array<MoveOnce, 4> in {};
+      std::array<MoveOnce, 4> out {};
+      auto ret = std::ranges::move(in, out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.moved; }));
+    }
+  }
+
+  { // check that the range is moved forwards
+    struct OnlyForwardsMovable {
+      OnlyForwardsMovable* next = nullptr;
+      bool canMove = false;
+      OnlyForwardsMovable() = default;
+      constexpr OnlyForwardsMovable& operator=(OnlyForwardsMovable&&) {
+        assert(canMove);
+        if (next != nullptr)
+          next->canMove = true;
+        return *this;
+      }
+    };
+    {
+      std::array<OnlyForwardsMovable, 3> in {};
+      std::array<OnlyForwardsMovable, 3> out {};
+      out[0].next = &out[1];
+      out[1].next = &out[2];
+      out[0].canMove = true;
+      auto ret = std::ranges::move(in.begin(), in.end(), out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(out[0].canMove);
+      assert(out[1].canMove);
+      assert(out[2].canMove);
+    }
+    {
+      std::array<OnlyForwardsMovable, 3> in {};
+      std::array<OnlyForwardsMovable, 3> out {};
+      out[0].next = &out[1];
+      out[1].next = &out[2];
+      out[0].canMove = true;
+      auto ret = std::ranges::move(in, out.begin());
+      assert(ret.in == in.end());
+      assert(ret.out == out.end());
+      assert(out[0].canMove);
+      assert(out[1].canMove);
+      assert(out[2].canMove);
+    }
+  }
+
+  { // check that iter_move is used properly
+    {
+      int a[] = {1, 2, 3, 4};
+      std::array<int, 4> b;
+      auto ret = std::ranges::move(IteratorWithMoveIter(a), IteratorWithMoveIter(a + 4), b.data());
+      assert(ret.in == a + 4);
+      assert(ret.out == b.data() + 4);
+      assert((b == std::array {42, 42, 42, 42}));
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      std::array<int, 4> b;
+      auto range = std::ranges::subrange(IteratorWithMoveIter(a), IteratorWithMoveIter(a + 4));
+      auto ret = std::ranges::move(range, b.data());
+      assert(ret.in == a + 4);
+      assert(ret.out == b.data() + 4);
+      assert((b == std::array {42, 42, 42, 42}));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/ranges.move_backward.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/ranges.move_backward.pass.cpp
new file mode 100644
index 0000000..1a281c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.move/ranges.move_backward.pass.cpp
@@ -0,0 +1,347 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<bidirectional_iterator I1, sentinel_for<I1> S1, bidirectional_iterator I2>
+//   requires indirectly_movable<I1, I2>
+//   constexpr ranges::move_backward_result<I1, I2>
+//     ranges::move_backward(I1 first, S1 last, I2 result);
+// template<bidirectional_range R, bidirectional_iterator I>
+//   requires indirectly_movable<iterator_t<R>, I>
+//   constexpr ranges::move_backward_result<borrowed_iterator_t<R>, I>
+//     ranges::move_backward(R&& r, I result);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <deque>
+#include <ranges>
+#include <vector>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+template <class In, class Out = In, class Sent = sentinel_wrapper<In>>
+concept HasMoveBackwardIt = requires(In in, Sent sent, Out out) { std::ranges::move_backward(in, sent, out); };
+
+static_assert(HasMoveBackwardIt<int*>);
+static_assert(!HasMoveBackwardIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasMoveBackwardIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasMoveBackwardIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasMoveBackwardIt<int*, WeaklyIncrementableNotMovable>);
+struct NotIndirectlyCopyable {};
+static_assert(!HasMoveBackwardIt<int*, NotIndirectlyCopyable*>);
+static_assert(!HasMoveBackwardIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasMoveBackwardIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range, class Out>
+concept HasMoveBackwardR = requires(Range range, Out out) { std::ranges::move_backward(range, out); };
+
+static_assert(HasMoveBackwardR<std::array<int, 10>, int*>);
+static_assert(!HasMoveBackwardR<InputRangeNotDerivedFrom, int*>);
+static_assert(!HasMoveBackwardR<InputRangeNotIndirectlyReadable, int*>);
+static_assert(!HasMoveBackwardR<InputRangeNotInputOrOutputIterator, int*>);
+static_assert(!HasMoveBackwardR<WeaklyIncrementableNotMovable, int*>);
+static_assert(!HasMoveBackwardR<UncheckedRange<NotIndirectlyCopyable*>, int*>);
+static_assert(!HasMoveBackwardR<InputRangeNotSentinelSemiregular, int*>);
+static_assert(!HasMoveBackwardR<InputRangeNotSentinelEqualityComparableWith, int*>);
+static_assert(!HasMoveBackwardR<UncheckedRange<int*>, WeaklyIncrementableNotMovable>);
+
+static_assert(std::is_same_v<std::ranges::copy_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+template <class In, class Out, class Sent, int N>
+constexpr void test(std::array<int, N> in) {
+  {
+    std::array<int, N> out;
+    std::same_as<std::ranges::in_out_result<In, Out>> decltype(auto) ret =
+      std::ranges::move_backward(In(in.data()), Sent(In(in.data() + in.size())), Out(out.data() + out.size()));
+    assert(in == out);
+    assert(base(ret.in) == in.data() + in.size());
+    assert(base(ret.out) == out.data());
+  }
+  {
+    std::array<int, N> out;
+    auto range = std::ranges::subrange(In(in.data()), Sent(In(in.data() + in.size())));
+    std::same_as<std::ranges::in_out_result<In, Out>> decltype(auto) ret =
+        std::ranges::move_backward(range, Out(out.data() + out.size()));
+    assert(in == out);
+    assert(base(ret.in) == in.data() + in.size());
+    assert(base(ret.out) == out.data());
+  }
+}
+
+template <class In, class Out, class Sent = In>
+constexpr void test_iterators() {
+  // simple test
+  test<In, Out, Sent, 4>({1, 2, 3, 4});
+  // check that an empty range works
+  test<In, Out, Sent, 0>({});
+}
+
+template <class InContainer, class OutContainer, class In, class Out, class Sent = In>
+constexpr void test_containers() {
+  {
+    InContainer in {1, 2, 3, 4};
+    OutContainer out(4);
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret =
+      std::ranges::move_backward(In(in.begin()), Sent(In(in.end())), Out(out.end()));
+    assert(std::ranges::equal(in, out));
+    assert(base(ret.in) == in.end());
+    assert(base(ret.out) == out.begin());
+  }
+  {
+    InContainer in {1, 2, 3, 4};
+    OutContainer out(4);
+    auto range = std::ranges::subrange(In(in.begin()), Sent(In(in.end())));
+    std::same_as<std::ranges::in_out_result<In, Out>> auto ret = std::ranges::move_backward(range, Out(out.end()));
+    assert(std::ranges::equal(in, out));
+    assert(base(ret.in) == in.end());
+    assert(base(ret.out) == out.begin());
+  }
+}
+
+template <template <class> class InIter, template <class> class OutIter>
+constexpr void test_sentinels() {
+  test_iterators<InIter<int*>, OutIter<int*>, InIter<int*>>();
+  test_iterators<InIter<int*>, OutIter<int*>, sentinel_wrapper<InIter<int*>>>();
+  test_iterators<InIter<int*>, OutIter<int*>, sized_sentinel<InIter<int*>>>();
+
+  if (!std::is_constant_evaluated()) {
+    if constexpr (!std::is_same_v<InIter<int*>, contiguous_iterator<int*>> &&
+                  !std::is_same_v<OutIter<int*>, contiguous_iterator<int*>> &&
+                  !std::is_same_v<InIter<int*>, ContiguousProxyIterator<int*>> &&
+                  !std::is_same_v<OutIter<int*>, ContiguousProxyIterator<int*>>) {
+      test_containers<std::deque<int>,
+                      std::deque<int>,
+                      InIter<std::deque<int>::iterator>,
+                      OutIter<std::deque<int>::iterator>>();
+      test_containers<std::deque<int>,
+                      std::vector<int>,
+                      InIter<std::deque<int>::iterator>,
+                      OutIter<std::vector<int>::iterator>>();
+      test_containers<std::vector<int>,
+                      std::deque<int>,
+                      InIter<std::vector<int>::iterator>,
+                      OutIter<std::deque<int>::iterator>>();
+      test_containers<std::vector<int>,
+                      std::vector<int>,
+                      InIter<std::vector<int>::iterator>,
+                      OutIter<std::vector<int>::iterator>>();
+    }
+  }
+}
+
+template <template <class> class Out>
+constexpr void test_in_iterators() {
+  test_sentinels<bidirectional_iterator, Out>();
+  test_sentinels<random_access_iterator, Out>();
+  test_sentinels<contiguous_iterator, Out>();
+  test_sentinels<std::type_identity_t, Out>();
+}
+
+template <template <class> class Out>
+constexpr void test_proxy_in_iterators() {
+  test_sentinels<BidirectionalProxyIterator, Out>();
+  test_sentinels<RandomAccessProxyIterator, Out>();
+  test_sentinels<ContiguousProxyIterator, Out>();
+  test_sentinels<ProxyIterator, Out>();
+}
+
+struct IteratorWithMoveIter {
+  using value_type = int;
+  using difference_type = int;
+  explicit IteratorWithMoveIter() = default;
+  int* ptr;
+  constexpr IteratorWithMoveIter(int* ptr_) : ptr(ptr_) {}
+
+  constexpr int& operator*() const; // iterator with iter_move should not be dereferenced
+
+  constexpr IteratorWithMoveIter& operator++() { ++ptr; return *this; }
+  constexpr IteratorWithMoveIter operator++(int) { auto ret = *this; ++*this; return ret; }
+
+  constexpr IteratorWithMoveIter& operator--() { --ptr; return *this; }
+  constexpr IteratorWithMoveIter operator--(int) { auto ret = *this; --*this; return ret; }
+
+  friend constexpr int iter_move(const IteratorWithMoveIter&) { return 42; }
+
+  constexpr bool operator==(const IteratorWithMoveIter& other) const = default;
+};
+
+constexpr bool test() {
+  test_in_iterators<bidirectional_iterator>();
+  test_in_iterators<random_access_iterator>();
+  test_in_iterators<contiguous_iterator>();
+  test_in_iterators<std::type_identity_t>();
+
+  test_proxy_in_iterators<BidirectionalProxyIterator>();
+  test_proxy_in_iterators<RandomAccessProxyIterator>();
+  test_proxy_in_iterators<ContiguousProxyIterator>();
+  test_proxy_in_iterators<ProxyIterator>();
+
+  { // check that a move-only type works
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      std::ranges::move_backward(a, std::end(b));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      std::ranges::move_backward(std::begin(a), std::end(a), std::end(b));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+  }
+
+  { // check that a move-only type works for ProxyIterator
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      ProxyRange proxyA{a};
+      ProxyRange proxyB{b};
+      std::ranges::move_backward(proxyA, std::ranges::next(proxyB.begin(), std::end(proxyB)));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+    {
+      MoveOnly a[] = {1, 2, 3};
+      MoveOnly b[3];
+      ProxyRange proxyA{a};
+      ProxyRange proxyB{b};
+      std::ranges::move_backward(std::begin(proxyA), std::end(proxyA),  std::ranges::next(proxyB.begin(), std::end(proxyB)));
+      assert(b[0].get() == 1);
+      assert(b[1].get() == 2);
+      assert(b[2].get() == 3);
+    }
+  }
+
+  { // check that ranges::dangling is returned
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<std::ranges::dangling, int*>> auto ret =
+      std::ranges::move_backward(std::array {1, 2, 3, 4}, out.data() + out.size());
+    assert(ret.out == out.data());
+    assert((out == std::array{1, 2, 3, 4}));
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    std::array in {1, 2, 3, 4};
+    std::array<int, 4> out;
+    std::same_as<std::ranges::in_out_result<int*, int*>> auto ret =
+        std::ranges::move_backward(std::views::all(in), out.data() + out.size());
+    assert(ret.in == in.data() + in.size());
+    assert(ret.out == out.data());
+    assert(in == out);
+  }
+
+  { // check that every element is moved exactly once
+    struct MoveOnce {
+      bool moved = false;
+      constexpr MoveOnce() = default;
+      constexpr MoveOnce(const MoveOnce& other) = delete;
+      constexpr MoveOnce& operator=(const MoveOnce& other) {
+        assert(!other.moved);
+        moved = true;
+        return *this;
+      }
+    };
+    {
+      std::array<MoveOnce, 4> in {};
+      std::array<MoveOnce, 4> out {};
+      auto ret = std::ranges::move_backward(in.begin(), in.end(), out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.moved; }));
+    }
+    {
+      std::array<MoveOnce, 4> in {};
+      std::array<MoveOnce, 4> out {};
+      auto ret = std::ranges::move_backward(in, out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(std::all_of(out.begin(), out.end(), [](const auto& e) { return e.moved; }));
+    }
+  }
+
+  { // check that the range is moved backwards
+    struct OnlyBackwardsMovable {
+      OnlyBackwardsMovable* next = nullptr;
+      bool canMove = false;
+      OnlyBackwardsMovable() = default;
+      constexpr OnlyBackwardsMovable& operator=(const OnlyBackwardsMovable&) {
+        assert(canMove);
+        if (next != nullptr)
+          next->canMove = true;
+        return *this;
+      }
+    };
+    {
+      std::array<OnlyBackwardsMovable, 3> in {};
+      std::array<OnlyBackwardsMovable, 3> out {};
+      out[1].next = &out[0];
+      out[2].next = &out[1];
+      out[2].canMove = true;
+      auto ret = std::ranges::move_backward(in, out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(out[0].canMove);
+      assert(out[1].canMove);
+      assert(out[2].canMove);
+    }
+    {
+      std::array<OnlyBackwardsMovable, 3> in {};
+      std::array<OnlyBackwardsMovable, 3> out {};
+      out[1].next = &out[0];
+      out[2].next = &out[1];
+      out[2].canMove = true;
+      auto ret = std::ranges::move_backward(in.begin(), in.end(), out.end());
+      assert(ret.in == in.end());
+      assert(ret.out == out.begin());
+      assert(out[0].canMove);
+      assert(out[1].canMove);
+      assert(out[2].canMove);
+    }
+  }
+
+  { // check that iter_move is used properly
+    {
+      int a[] = {1, 2, 3, 4};
+      std::array<int, 4> b;
+      auto ret = std::ranges::move_backward(IteratorWithMoveIter(a), IteratorWithMoveIter(a + 4), b.data() + b.size());
+      assert(ret.in == a + 4);
+      assert(ret.out == b.data());
+      assert((b == std::array {42, 42, 42, 42}));
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      std::array<int, 4> b;
+      auto range = std::ranges::subrange(IteratorWithMoveIter(a), IteratorWithMoveIter(a + 4));
+      auto ret = std::ranges::move_backward(range, b.data() + b.size());
+      assert(ret.in == a + 4);
+      assert(ret.out == b.data());
+      assert((b == std::array {42, 42, 42, 42}));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/is_partitioned.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/is_partitioned.pass.cpp
new file mode 100644
index 0000000..f5a0ff0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/is_partitioned.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class InputIterator, class Predicate>
+//     constexpr bool       // constexpr after C++17
+//     is_partitioned(InputIterator first, InputIterator last, Predicate pred);
+
+#include <algorithm>
+#include <functional>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "counting_predicates.h"
+
+struct is_odd {
+  TEST_CONSTEXPR bool operator()(const int &i) const { return i & 1; }
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 4, 6};
+    int ib[] = {1, 2, 3, 4, 5, 6};
+    return     std::is_partitioned(std::begin(ia), std::end(ia), is_odd())
+           && !std::is_partitioned(std::begin(ib), std::end(ib), is_odd());
+    }
+#endif
+
+
+int main(int, char**) {
+  {
+    const int ia[] = {1, 2, 3, 4, 5, 6};
+    unary_counting_predicate<is_odd, int> pred((is_odd()));
+    assert(!std::is_partitioned(cpp17_input_iterator<const int *>(std::begin(ia)),
+                                cpp17_input_iterator<const int *>(std::end(ia)),
+                                std::ref(pred)));
+    assert(static_cast<std::ptrdiff_t>(pred.count()) <=
+           std::distance(std::begin(ia), std::end(ia)));
+  }
+  {
+    const int ia[] = {1, 3, 5, 2, 4, 6};
+    unary_counting_predicate<is_odd, int> pred((is_odd()));
+    assert(std::is_partitioned(cpp17_input_iterator<const int *>(std::begin(ia)),
+                               cpp17_input_iterator<const int *>(std::end(ia)),
+                               std::ref(pred)));
+    assert(static_cast<std::ptrdiff_t>(pred.count()) <=
+           std::distance(std::begin(ia), std::end(ia)));
+  }
+  {
+    const int ia[] = {2, 4, 6, 1, 3, 5};
+    unary_counting_predicate<is_odd, int> pred((is_odd()));
+    assert(!std::is_partitioned(cpp17_input_iterator<const int *>(std::begin(ia)),
+                                cpp17_input_iterator<const int *>(std::end(ia)),
+                                std::ref(pred)));
+    assert(static_cast<std::ptrdiff_t>(pred.count()) <=
+           std::distance(std::begin(ia), std::end(ia)));
+  }
+  {
+    const int ia[] = {1, 3, 5, 2, 4, 6, 7};
+    unary_counting_predicate<is_odd, int> pred((is_odd()));
+    assert(!std::is_partitioned(cpp17_input_iterator<const int *>(std::begin(ia)),
+                                cpp17_input_iterator<const int *>(std::end(ia)),
+                                std::ref(pred)));
+    assert(static_cast<std::ptrdiff_t>(pred.count()) <=
+           std::distance(std::begin(ia), std::end(ia)));
+  }
+  {
+    const int ia[] = {1, 3, 5, 2, 4, 6, 7};
+    unary_counting_predicate<is_odd, int> pred((is_odd()));
+    assert(std::is_partitioned(cpp17_input_iterator<const int *>(std::begin(ia)),
+                               cpp17_input_iterator<const int *>(std::begin(ia)),
+                               std::ref(pred)));
+    assert(static_cast<std::ptrdiff_t>(pred.count()) <=
+           std::distance(std::begin(ia), std::begin(ia)));
+  }
+  {
+    const int ia[] = {1, 3, 5, 7, 9, 11, 2};
+    unary_counting_predicate<is_odd, int> pred((is_odd()));
+    assert(std::is_partitioned(cpp17_input_iterator<const int *>(std::begin(ia)),
+                               cpp17_input_iterator<const int *>(std::end(ia)),
+                               std::ref(pred)));
+    assert(static_cast<std::ptrdiff_t>(pred.count()) <=
+           std::distance(std::begin(ia), std::end(ia)));
+  }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition.pass.cpp
new file mode 100644
index 0000000..3eaeaa4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Pred>
+//   constexpr Iter  // constexpr in C++20
+//   partition(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <cassert>
+
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct is_odd
+{
+    TEST_CONSTEXPR bool operator()(const int& i) const {return i & 1;}
+};
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    // check mixed
+    int ia[] = {1, 2, 3, 4, 5, 6, 7, 8 ,9};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    Iter r = std::partition(Iter(ia), Iter(ia + sa), is_odd());
+    assert(base(r) == ia + 5);
+    for (int* i = ia; i < base(r); ++i)
+        assert(is_odd()(*i));
+    for (int* i = base(r); i < ia+sa; ++i)
+        assert(!is_odd()(*i));
+    // check empty
+    r = std::partition(Iter(ia), Iter(ia), is_odd());
+    assert(base(r) == ia);
+    // check all false
+    for (unsigned i = 0; i < sa; ++i)
+        ia[i] = 2*i;
+    r = std::partition(Iter(ia), Iter(ia+sa), is_odd());
+    assert(base(r) == ia);
+    // check all true
+    for (unsigned i = 0; i < sa; ++i)
+        ia[i] = 2*i+1;
+    r = std::partition(Iter(ia), Iter(ia+sa), is_odd());
+    assert(base(r) == ia+sa);
+    // check all true but last
+    for (unsigned i = 0; i < sa; ++i)
+        ia[i] = 2*i+1;
+    ia[sa-1] = 10;
+    r = std::partition(Iter(ia), Iter(ia+sa), is_odd());
+    assert(base(r) == ia+sa-1);
+    for (int* i = ia; i < base(r); ++i)
+        assert(is_odd()(*i));
+    for (int* i = base(r); i < ia+sa; ++i)
+        assert(!is_odd()(*i));
+    // check all true but first
+    for (unsigned i = 0; i < sa; ++i)
+        ia[i] = 2*i+1;
+    ia[0] = 10;
+    r = std::partition(Iter(ia), Iter(ia+sa), is_odd());
+    assert(base(r) == ia+sa-1);
+    for (int* i = ia; i < base(r); ++i)
+        assert(is_odd()(*i));
+    for (int* i = base(r); i < ia+sa; ++i)
+        assert(!is_odd()(*i));
+    // check all false but last
+    for (unsigned i = 0; i < sa; ++i)
+        ia[i] = 2*i;
+    ia[sa-1] = 11;
+    r = std::partition(Iter(ia), Iter(ia+sa), is_odd());
+    assert(base(r) == ia+1);
+    for (int* i = ia; i < base(r); ++i)
+        assert(is_odd()(*i));
+    for (int* i = base(r); i < ia+sa; ++i)
+        assert(!is_odd()(*i));
+    // check all false but first
+    for (unsigned i = 0; i < sa; ++i)
+        ia[i] = 2*i;
+    ia[0] = 11;
+    r = std::partition(Iter(ia), Iter(ia+sa), is_odd());
+    assert(base(r) == ia+1);
+    for (int* i = ia; i < base(r); ++i)
+        assert(is_odd()(*i));
+    for (int* i = base(r); i < ia+sa; ++i)
+        assert(!is_odd()(*i));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<bidirectional_iterator<int*>>());
+    static_assert(test<random_access_iterator<int*>>());
+    static_assert(test<int*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition_copy.pass.cpp
new file mode 100644
index 0000000..05ab779
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition_copy.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class InputIterator, class OutputIterator1,
+//           class OutputIterator2, class Predicate>
+//     constexpr pair<OutputIterator1, OutputIterator2>     // constexpr after C++17
+//     partition_copy(InputIterator first, InputIterator last,
+//                    OutputIterator1 out_true, OutputIterator2 out_false,
+//                    Predicate pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct is_odd
+{
+    TEST_CONSTEXPR bool operator()(const int& i) const {return i & 1;}
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 4, 6};
+    int r1[10] = {0};
+    int r2[10] = {0};
+
+    auto p = std::partition_copy(std::begin(ia), std::end(ia),
+                    std::begin(r1), std::begin(r2), is_odd());
+
+    return std::all_of(std::begin(r1), p.first, is_odd())
+        && std::all_of(p.first, std::end(r1), [](int a){return a == 0;})
+        && std::none_of(std::begin(r2), p.second, is_odd())
+        && std::all_of(p.second, std::end(r2), [](int a){return a == 0;})
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    {
+        const int ia[] = {1, 2, 3, 4, 6, 8, 5, 7};
+        int r1[10] = {0};
+        int r2[10] = {0};
+        typedef std::pair<cpp17_output_iterator<int*>,  int*> P;
+        P p = std::partition_copy(cpp17_input_iterator<const int*>(std::begin(ia)),
+                                  cpp17_input_iterator<const int*>(std::end(ia)),
+                                  cpp17_output_iterator<int*>(r1), r2, is_odd());
+        assert(base(p.first) == r1 + 4);
+        assert(r1[0] == 1);
+        assert(r1[1] == 3);
+        assert(r1[2] == 5);
+        assert(r1[3] == 7);
+        assert(p.second == r2 + 4);
+        assert(r2[0] == 2);
+        assert(r2[1] == 4);
+        assert(r2[2] == 6);
+        assert(r2[3] == 8);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition_point.pass.cpp
new file mode 100644
index 0000000..2dc1786
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/partition_point.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class ForwardIterator, class Predicate>
+//     constexpr ForwardIterator       // constexpr after C++17
+//     partition_point(ForwardIterator first, ForwardIterator last, Predicate pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct is_odd
+{
+    TEST_CONSTEXPR bool operator()(const int& i) const {return i & 1;}
+};
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 4, 6};
+    int ib[] = {1, 2, 3, 4, 5, 6};
+    return    (std::partition_point(std::begin(ia), std::end(ia), is_odd()) == ia+3)
+           && (std::partition_point(std::begin(ib), std::end(ib), is_odd()) == ib+1)
+           ;
+    }
+#endif
+
+
+int main(int, char**)
+{
+    {
+        const int ia[] = {2, 4, 6, 8, 10};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia));
+    }
+    {
+        const int ia[] = {1, 2, 4, 6, 8};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia + 1));
+    }
+    {
+        const int ia[] = {1, 3, 2, 4, 6};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia + 2));
+    }
+    {
+        const int ia[] = {1, 3, 5, 2, 4, 6};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia + 3));
+    }
+    {
+        const int ia[] = {1, 3, 5, 7, 2, 4};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia + 4));
+    }
+    {
+        const int ia[] = {1, 3, 5, 7, 9, 2};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia + 5));
+    }
+    {
+        const int ia[] = {1, 3, 5, 7, 9, 11};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::end(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia + 6));
+    }
+    {
+        const int ia[] = {1, 3, 5, 2, 4, 6, 7};
+        assert(std::partition_point(forward_iterator<const int*>(std::begin(ia)),
+                                    forward_iterator<const int*>(std::begin(ia)),
+                                    is_odd()) == forward_iterator<const int*>(ia));
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition.pass.cpp
new file mode 100644
index 0000000..6779f78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition.pass.cpp
@@ -0,0 +1,214 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<permutable I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr subrange<I>
+//     partition(I first, S last, Pred pred, Proj proj = {});                                       // Since C++20
+//
+// template<forward_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires permutable<iterator_t<R>>
+//   constexpr borrowed_subrange_t<R>
+//     partition(R&& r, Pred pred, Proj proj = {});                                                 // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct UnaryPred { bool operator()(int) const; };
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Pred = UnaryPred>
+concept HasPartitionIter =
+    requires(Iter&& iter, Sent&& sent, Pred&& pred) {
+      std::ranges::partition(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Pred>(pred));
+    };
+
+static_assert(HasPartitionIter<int*, int*, UnaryPred>);
+
+// !permutable<I>
+static_assert(!HasPartitionIter<PermutableNotForwardIterator>);
+static_assert(!HasPartitionIter<PermutableNotSwappable>);
+
+// !sentinel_for<S, I>
+static_assert(!HasPartitionIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasPartitionIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !indirect_unary_predicate<projected<I, Proj>>
+static_assert(!HasPartitionIter<int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartitionIter<int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Pred>
+concept HasPartitionRange =
+    requires(Range&& range, Pred&& pred) {
+      std::ranges::partition(std::forward<Range>(range), std::forward<Pred>(pred));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasPartitionRange<R<int*>, UnaryPred>);
+
+// !forward_range<R>
+static_assert(!HasPartitionRange<ForwardRangeNotDerivedFrom, UnaryPred>);
+static_assert(!HasPartitionRange<ForwardRangeNotIncrementable, UnaryPred>);
+
+// !indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+static_assert(!HasPartitionRange<R<int*>, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartitionRange<R<int*>, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !permutable<iterator_t<R>>
+static_assert(!HasPartitionRange<R<PermutableNotForwardIterator>, UnaryPred>);
+static_assert(!HasPartitionRange<R<PermutableNotSwappable>, UnaryPred>);
+
+// `partition` isn't a stable algorithm so this function cannot test the exact output.
+template <class Iter, class Sent, size_t N, class Pred>
+constexpr void test_one(std::array<int, N> input, Pred pred, size_t partition_point) {
+  auto neg_pred = [&](int x) { return !pred(x); };
+
+  { // (iterator, sentinel) overload.
+    auto partitioned = input;
+    auto b = Iter(partitioned.data());
+    auto e = Sent(Iter(partitioned.data() + partitioned.size()));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::partition(b, e, pred);
+
+    assert(base(result.begin()) == partitioned.data() + partition_point);
+    assert(base(result.end()) == partitioned.data() + partitioned.size());
+
+    assert(std::ranges::all_of(b, result.begin(), pred));
+    assert(std::ranges::all_of(result.begin(), e, neg_pred));
+  }
+
+  { // (range) overload.
+    auto partitioned = input;
+    auto b = Iter(partitioned.data());
+    auto e = Sent(Iter(partitioned.data() + partitioned.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::partition(range, pred);
+
+    assert(base(result.begin()) == partitioned.data() + partition_point);
+    assert(base(result.end()) == partitioned.data() + partitioned.size());
+
+    assert(std::ranges::all_of(b, result.begin(), pred));
+    assert(std::ranges::all_of(result.begin(), e, neg_pred));
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  auto is_odd = [](int x) { return x % 2 != 0; };
+
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, is_odd, 0);
+  // 1-element sequence, the element satisfies the predicate.
+  test_one<Iter, Sent, 1>({1}, is_odd, 1);
+  // 1-element sequence, the element doesn't satisfy the predicate.
+  test_one<Iter, Sent, 1>({2}, is_odd, 0);
+  // 2-element sequence, not in order.
+  test_one<Iter, Sent, 2>({2, 1}, is_odd, 1);
+  // 2-element sequence, already in order.
+  test_one<Iter, Sent, 2>({1, 2}, is_odd, 1);
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, is_odd, 2);
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 8, 4, 11, 5}, is_odd, 4);
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 2, 8, 1, 6}, is_odd, 3);
+  // All elements are the same and satisfy the predicate.
+  test_one<Iter, Sent, 3>({1, 1, 1}, is_odd, 3);
+  // All elements are the same and don't satisfy the predicate.
+  test_one<Iter, Sent, 3>({2, 2, 2}, is_odd, 0);
+  // Already partitioned.
+  test_one<Iter, Sent, 6>({1, 3, 5, 4, 6, 8}, is_odd, 3);
+  // Reverse-partitioned.
+  test_one<Iter, Sent, 6>({4, 6, 8, 1, 3, 5}, is_odd, 3);
+  // Repeating pattern.
+  test_one<Iter, Sent, 6>({1, 2, 1, 2, 1, 2}, is_odd, 3);
+
+  auto is_negative = [](int x) { return x < 0; };
+  // Different comparator.
+  test_one<Iter, Sent, 5>({-3, 5, 7, -6, 2}, is_negative, 2);
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<forward_iterator<int*>>();
+  test_iterators_1<bidirectional_iterator<int*>>();
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom projection works.
+    const std::array input = {1, -1};
+    auto is_negative = [](int x) { return x < 0; };
+    auto negate = [](int x) { return -x; };
+    const std::array expected_no_proj = {-1, 1};
+    const std::array expected_with_proj = {1, -1};
+
+    { // (iterator, sentinel) overload.
+      {
+        auto in = input;
+        std::ranges::partition(in.begin(), in.end(), is_negative);
+        assert(in == expected_no_proj);
+      }
+      {
+        auto in = input;
+        std::ranges::partition(in.begin(), in.end(), is_negative, negate);
+        assert(in == expected_with_proj);
+      }
+    }
+
+    { // (range) overload.
+      {
+        auto in = input;
+        std::ranges::partition(in, is_negative);
+        assert(in == expected_no_proj);
+      }
+      {
+        auto in = input;
+        std::ranges::partition(in, is_negative, negate);
+        assert(in == expected_with_proj);
+      }
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition_copy.pass.cpp
new file mode 100644
index 0000000..ba8a347
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition_copy.pass.cpp
@@ -0,0 +1,305 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S,
+//          weakly_incrementable O1, weakly_incrementable O2,
+//          class Proj = identity, indirect_unary_predicate<projected<I, Proj>> Pred>
+//   requires indirectly_copyable<I, O1> && indirectly_copyable<I, O2>
+//   constexpr partition_copy_result<I, O1, O2>
+//     partition_copy(I first, S last, O1 out_true, O2 out_false, Pred pred,
+//                    Proj proj = {});                                                              // Since C++20
+//
+// template<input_range R, weakly_incrementable O1, weakly_incrementable O2,
+//          class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires indirectly_copyable<iterator_t<R>, O1> &&
+//            indirectly_copyable<iterator_t<R>, O2>
+//   constexpr partition_copy_result<borrowed_iterator_t<R>, O1, O2>
+//     partition_copy(R&& r, O1 out_true, O2 out_false, Pred pred, Proj proj = {});                 // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+struct UnaryPred { bool operator()(int) const; };
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class InIter = int*, class Sent = int*, class Output1 = int*, class Output2 = int*, class Pred = UnaryPred>
+concept HasPartitionCopyIter =
+    requires(InIter&& input, Sent&& sent, Output1&& output1, Output2&& output2, Pred&& pred) {
+      std::ranges::partition_copy(std::forward<InIter>(input), std::forward<Sent>(sent),
+          std::forward<Output1>(output1), std::forward<Output2>(output2), std::forward<Pred>(pred));
+    };
+
+static_assert(HasPartitionCopyIter<int*, int*, int*, int*, UnaryPred>);
+
+// !input_iterator<I>
+static_assert(!HasPartitionCopyIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasPartitionCopyIter<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasPartitionCopyIter<InputIteratorNotInputOrOutputIterator>);
+
+// !sentinel_for<S, I>
+static_assert(!HasPartitionCopyIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasPartitionCopyIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !weakly_incrementable<O1>
+static_assert(!HasPartitionCopyIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// !weakly_incrementable<O2>
+static_assert(!HasPartitionCopyIter<int*, int*, int*, WeaklyIncrementableNotMovable>);
+
+// !indirect_unary_predicate<projected<I, Proj>>
+static_assert(!HasPartitionCopyIter<int*, int*, int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartitionCopyIter<int*, int*, int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+struct Uncopyable {
+  Uncopyable(int&&);
+  Uncopyable(const int&) = delete;
+};
+// !indirectly_copyable<I, O1>
+static_assert(!HasPartitionCopyIter<int*, int*, Uncopyable*>);
+// !indirectly_copyable<I, O2>
+static_assert(!HasPartitionCopyIter<int*, int*, int*, Uncopyable*>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class InputRange, class Output1 = int*, class Output2 = int*, class Pred = UnaryPred>
+concept HasPartitionCopyRange =
+    requires(InputRange&& input, Output1&& output1, Output2&& output2, Pred&& pred) {
+      std::ranges::partition_copy(std::forward<InputRange>(input),
+          std::forward<Output1>(output1), std::forward<Output2>(output2), std::forward<Pred>(pred));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasPartitionCopyRange<R<int*>, int*, int*, UnaryPred>);
+
+// !input_iterator<I>
+static_assert(!HasPartitionCopyRange<InputRangeNotDerivedFrom>);
+static_assert(!HasPartitionCopyRange<InputRangeNotIndirectlyReadable>);
+static_assert(!HasPartitionCopyRange<InputRangeNotInputOrOutputIterator>);
+
+// !weakly_incrementable<O1>
+static_assert(!HasPartitionCopyRange<R<int*>, WeaklyIncrementableNotMovable>);
+
+// !weakly_incrementable<O2>
+static_assert(!HasPartitionCopyRange<R<int*>, int*, WeaklyIncrementableNotMovable>);
+
+// !indirect_unary_predicate<projected<I, Proj>>
+static_assert(!HasPartitionCopyRange<R<int*>, int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartitionCopyRange<R<int*>, int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !indirectly_copyable<I, O1>
+static_assert(!HasPartitionCopyRange<R<int*>, Uncopyable*>);
+// !indirectly_copyable<I, O2>
+static_assert(!HasPartitionCopyRange<R<int*>, int*, Uncopyable*>);
+
+static_assert(std::is_same_v<std::ranges::partition_copy_result<int, int, int>,
+    std::ranges::in_out_out_result<int, int, int>>);
+
+template <class Iter, class Sent, class OutIter1, class OutIter2, size_t N1, size_t N2, size_t N3, class Pred>
+constexpr void test_one(std::array<int, N1> input, Pred pred, std::array<int, N2> expected_true,
+    std::array<int, N3> expected_false) {
+  static_assert(N2 + N3 == N1);
+  using ResultT = std::ranges::partition_copy_result<Iter, OutIter1, OutIter2>;
+
+  auto begin = input.data();
+  auto end = input.data() + input.size();
+
+  { // (iterator, sentinel) overload.
+    std::array<int, N2> out1;
+    std::array<int, N3> out2;
+
+    std::same_as<ResultT> decltype(auto) result = std::ranges::partition_copy(
+        Iter(begin), Sent(Iter(end)), OutIter1(out1.begin()), OutIter2(out2.begin()), pred);
+
+    assert(base(result.in) == input.data() + input.size());
+    assert(base(result.out1) == out1.data() + expected_true.size());
+    assert(base(result.out2) == out2.data() + expected_false.size());
+
+    assert(std::ranges::equal(out1, expected_true));
+    assert(std::ranges::equal(out2, expected_false));
+  }
+
+  { // (range) overload.
+    std::ranges::subrange range{Iter(begin), Sent(Iter(end))};
+    std::array<int, N2> out1;
+    std::array<int, N3> out2;
+
+    std::same_as<ResultT> decltype(auto) result = std::ranges::partition_copy(
+        range, OutIter1(out1.begin()), OutIter2(out2.begin()), pred);
+
+    assert(base(result.in) == input.data() + input.size());
+    assert(base(result.out1) == out1.data() + expected_true.size());
+    assert(base(result.out2) == out2.data() + expected_false.size());
+
+    assert(std::ranges::equal(out1, expected_true));
+    assert(std::ranges::equal(out2, expected_false));
+  }
+}
+
+template <class InIter, class Sent, class Out1, class Out2>
+constexpr void test_iterators_in_sent_out1_out2() {
+  auto is_odd = [](int x) { return x % 2 != 0; };
+
+  // Empty sequence.
+  test_one<InIter, Sent, Out1, Out2, 0, 0, 0>({}, is_odd, {}, {});
+  // 1-element sequence, the element satisfies the predicate.
+  test_one<InIter, Sent, Out1, Out2, 1, 1, 0>({1}, is_odd, {1}, {});
+  // 1-element sequence, the element doesn't satisfy the predicate.
+  test_one<InIter, Sent, Out1, Out2, 1, 0, 1>({2}, is_odd, {}, {2});
+  // 2-element sequence, not in order.
+  test_one<InIter, Sent, Out1, Out2, 2, 1, 1>({2, 1}, is_odd, {1}, {2});
+  // 2-element sequence, already in order.
+  test_one<InIter, Sent, Out1, Out2, 2, 1, 1>({1, 2}, is_odd, {1}, {2});
+  // 3-element sequence.
+  test_one<InIter, Sent, Out1, Out2, 3, 2, 1>({2, 1, 3}, is_odd, {1, 3}, {2});
+  // Longer sequence.
+  test_one<InIter, Sent, Out1, Out2, 8, 4, 4>({2, 1, 3, 6, 8, 4, 11, 5}, is_odd, {1, 3, 11, 5}, {2, 6, 8, 4});
+  // Longer sequence with duplicates.
+  test_one<InIter, Sent, Out1, Out2, 8, 3, 5>({2, 1, 3, 6, 2, 8, 1, 6}, is_odd, {1, 3, 1}, {2, 6, 2, 8, 6});
+  // All elements are the same and satisfy the predicate.
+  test_one<InIter, Sent, Out1, Out2, 3, 3, 0>({1, 1, 1}, is_odd, {1, 1, 1}, {});
+  // All elements are the same and don't satisfy the predicate.
+  test_one<InIter, Sent, Out1, Out2, 3, 0, 3>({2, 2, 2}, is_odd, {}, {2, 2, 2});
+  // Already partitioned.
+  test_one<InIter, Sent, Out1, Out2, 6, 3, 3>({1, 3, 5, 4, 6, 8}, is_odd, {1, 3, 5}, {4, 6, 8});
+  // Reverse-partitioned.
+  test_one<InIter, Sent, Out1, Out2, 6, 3, 3>({4, 6, 8, 1, 3, 5}, is_odd, {1, 3, 5}, {4, 6, 8});
+  // Repeating pattern.
+  test_one<InIter, Sent, Out1, Out2, 6, 3, 3>({1, 2, 1, 2, 1, 2}, is_odd, {1, 1, 1}, {2, 2, 2});
+
+  auto is_negative = [](int x) { return x < 0; };
+  // Different comparator.
+  test_one<InIter, Sent, Out1, Out2, 5, 2, 3>({-3, 5, 7, -6, 2}, is_negative, {-3, -6}, {5, 7, 2});
+}
+
+template <class InIter, class Sent, class Out1>
+constexpr void test_iterators_in_sent_out1() {
+  test_iterators_in_sent_out1_out2<InIter, Sent, Out1, cpp20_output_iterator<int*>>();
+  test_iterators_in_sent_out1_out2<InIter, Sent, Out1, random_access_iterator<int*>>();
+  test_iterators_in_sent_out1_out2<InIter, Sent, Out1, int*>();
+}
+
+template <class InIter, class Sent>
+constexpr void test_iterators_in_sent() {
+  test_iterators_in_sent_out1<InIter, Sent, cpp17_output_iterator<int*>>();
+  test_iterators_in_sent_out1<InIter, Sent, cpp20_output_iterator<int*>>();
+  test_iterators_in_sent_out1<InIter, Sent, random_access_iterator<int*>>();
+  test_iterators_in_sent_out1<InIter, Sent, int*>();
+}
+
+template <class InIter>
+constexpr void test_iterators_in() {
+  if constexpr (std::sentinel_for<InIter, InIter>) {
+    test_iterators_in_sent<InIter, InIter>();
+  }
+  test_iterators_in_sent<InIter, sentinel_wrapper<InIter>>();
+}
+
+constexpr void test_iterators() {
+  // Note: deliberately testing with only the weakest and "strongest" iterator types to minimize combinatorial
+  // explosion.
+  test_iterators_in<cpp20_input_iterator<int*>>();
+  test_iterators_in<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom projection works.
+    const std::array in = {1, 3, 9, -2, -5, -8};
+    auto is_negative = [](int x) { return x < 0; };
+    auto negate = [](int x) { return -x; };
+    const std::array expected_negative = {-2, -5, -8};
+    const std::array expected_positive = {1, 3, 9};
+
+    { // (iterator, sentinel) overload.
+      {
+        std::array<int, 3> out1, out2;
+        std::ranges::partition_copy(in.begin(), in.end(), out1.begin(), out2.begin(), is_negative);
+        assert(out1 == expected_negative);
+        assert(out2 == expected_positive);
+      }
+      {
+        std::array<int, 3> out1, out2;
+        std::ranges::partition_copy(in.begin(), in.end(), out1.begin(), out2.begin(), is_negative, negate);
+        assert(out1 == expected_positive);
+        assert(out2 == expected_negative);
+      }
+    }
+
+    { // (range) overload.
+      {
+        std::array<int, 3> out1, out2;
+        std::ranges::partition_copy(in, out1.begin(), out2.begin(), is_negative);
+        assert(out1 == expected_negative);
+        assert(out2 == expected_positive);
+      }
+      {
+        std::array<int, 3> out1, out2;
+        std::ranges::partition_copy(in, out1.begin(), out2.begin(), is_negative, negate);
+        assert(out1 == expected_positive);
+        assert(out2 == expected_negative);
+      }
+    }
+  }
+
+  { // Complexity: Exactly `last - first` applications of `pred` and `proj`.
+    {
+      const std::array in = {-2, -5, -8, -11, -10, -5, 1, 3, 9, 6, 8, 2, 4, 2};
+      auto is_negative = [](int x) { return x < 0; };
+      std::array<int, 6> out1;
+      std::array<int, 8> out2;
+
+      int pred_count = 0, proj_count = 0;
+      counting_predicate pred(is_negative, pred_count);
+      counting_projection proj(proj_count);
+      auto expected = static_cast<int>(in.size());
+
+      {
+        std::ranges::partition_copy(in.begin(), in.end(), out1.begin(), out2.begin(), pred, proj);
+        assert(pred_count == expected);
+        assert(proj_count == expected);
+        pred_count = proj_count = 0;
+      }
+
+      {
+        std::ranges::partition_copy(in, out1.begin(), out2.begin(), pred, proj);
+        assert(pred_count == expected);
+        assert(proj_count == expected);
+        pred_count = proj_count = 0;
+      }
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition_point.pass.cpp
new file mode 100644
index 0000000..f9dadc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_partition_point.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr I partition_point(I first, S last, Pred pred, Proj proj = {});                       // Since C++20
+//
+// template<forward_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr borrowed_iterator_t<R>
+//     partition_point(R&& r, Pred pred, Proj proj = {});                                           // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct UnaryPred { bool operator()(int) const; };
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Pred = UnaryPred>
+concept HasPartitionPointIter =
+    requires(Iter&& iter, Sent&& sent, Pred&& pred) {
+      std::ranges::partition_point(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Pred>(pred));
+    };
+
+static_assert(HasPartitionPointIter<int*, int*, UnaryPred>);
+
+// !forward_iterator<I>
+static_assert(!HasPartitionPointIter<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasPartitionPointIter<ForwardIteratorNotIncrementable>);
+
+// !sentinel_for<S, I>
+static_assert(!HasPartitionPointIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasPartitionPointIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !indirect_unary_predicate<projected<I, Proj>>
+static_assert(!HasPartitionPointIter<int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartitionPointIter<int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Pred>
+concept HasPartitionPointRange =
+    requires(Range&& range, Pred&& pred) {
+      std::ranges::partition_point(std::forward<Range>(range), std::forward<Pred>(pred));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasPartitionPointRange<R<int*>, UnaryPred>);
+
+// !forward_range<R>
+static_assert(!HasPartitionPointRange<ForwardRangeNotDerivedFrom, UnaryPred>);
+static_assert(!HasPartitionPointRange<ForwardRangeNotIncrementable, UnaryPred>);
+
+// !indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+static_assert(!HasPartitionPointRange<R<int*>, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartitionPointRange<R<int*>, IndirectUnaryPredicateNotCopyConstructible>);
+
+template <class Iter, class Sent, size_t N, class Pred>
+constexpr void test_one(std::array<int, N> input, Pred pred, size_t partition_point) {
+  assert(std::ranges::is_partitioned(input, pred));
+
+  auto begin = Iter(input.data());
+  auto end = Sent(Iter(input.data() + input.size()));
+  auto neg_pred = [&](int x) { return !pred(x); };
+
+  { // (iterator, sentinel) overload.
+    std::same_as<Iter> decltype(auto) result = std::ranges::partition_point(begin, end, pred);
+
+    assert(base(result) == input.data() + partition_point);
+    assert(std::ranges::all_of(begin, result, pred));
+    assert(std::ranges::all_of(result, end, neg_pred));
+  }
+
+  { // (range) overload.
+    auto range = std::ranges::subrange(begin, end);
+    std::same_as<Iter> decltype(auto) result = std::ranges::partition_point(range, pred);
+
+    assert(base(result) == input.data() + partition_point);
+    assert(std::ranges::all_of(begin, result, pred));
+    assert(std::ranges::all_of(result, end, neg_pred));
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  auto is_odd = [](int x) { return x % 2 != 0; };
+
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, is_odd, 0);
+  // 1-element sequence, the element satisfies the predicate.
+  test_one<Iter, Sent, 1>({1}, is_odd, 1);
+  // 1-element sequence, the element doesn't satisfy the predicate.
+  test_one<Iter, Sent, 1>({2}, is_odd, 0);
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({1, 2}, is_odd, 1);
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({3, 1, 2}, is_odd, 2);
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({1, 3, 11, 5, 6, 2, 8, 4}, is_odd, 4);
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 8>({1, 3, 3, 4, 6, 2, 8, 2}, is_odd, 3);
+  // All elements are the same and satisfy the predicate.
+  test_one<Iter, Sent, 3>({1, 1, 1}, is_odd, 3);
+  // All elements are the same and don't satisfy the predicate.
+  test_one<Iter, Sent, 3>({2, 2, 2}, is_odd, 0);
+  // All non-satisfying and all satisfying elements are the same.
+  test_one<Iter, Sent, 6>({1, 1, 1, 2, 2, 2}, is_odd, 3);
+
+  auto is_negative = [](int x) { return x < 0; };
+  // Different comparator.
+  test_one<Iter, Sent, 5>({-3, -6, 5, 7, 2}, is_negative, 2);
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<forward_iterator<int*>>();
+  test_iterators_1<bidirectional_iterator<int*>>();
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom projection works.
+    const std::array in = {1, 3, 4, 6, 8};
+    auto is_odd = [](int x) { return x % 2 != 0; };
+    auto x2 = [](int x) { return x * 2; };
+    auto expected_no_proj = in.begin() + 2;
+    auto expected_with_proj = in.begin();
+
+    { // (iterator, sentinel) overload.
+      auto result_no_proj = std::ranges::partition_point(in.begin(), in.end(), is_odd);
+      assert(result_no_proj == expected_no_proj);
+      auto result_with_proj = std::ranges::partition_point(in.begin(), in.end(), is_odd, x2);
+      assert(result_with_proj == expected_with_proj);
+    }
+
+    { // (range) overload.
+      auto result_no_proj = std::ranges::partition_point(in, is_odd);
+      assert(result_no_proj == expected_no_proj);
+      auto result_with_proj = std::ranges::partition_point(in, is_odd, x2);
+      assert(result_with_proj == expected_with_proj);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_stable_partition.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_stable_partition.pass.cpp
new file mode 100644
index 0000000..b624abc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/ranges_stable_partition.pass.cpp
@@ -0,0 +1,248 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<bidirectional_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   requires permutable<I>
+//   subrange<I> stable_partition(I first, S last, Pred pred, Proj proj = {});                      // Since C++20
+//
+// template<bidirectional_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires permutable<iterator_t<R>>
+//   borrowed_subrange_t<R> stable_partition(R&& r, Pred pred, Proj proj = {});                     // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct UnaryPred { bool operator()(int) const; };
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Pred = UnaryPred>
+concept HasStablePartitionIter =
+    requires(Iter&& iter, Sent&& sent, Pred&& pred) {
+      std::ranges::stable_partition(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Pred>(pred));
+    };
+
+static_assert(HasStablePartitionIter<int*, int*, UnaryPred>);
+
+// !bidirectional_iterator<I>
+static_assert(!HasStablePartitionIter<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasStablePartitionIter<BidirectionalIteratorNotDecrementable>);
+
+// !sentinel_for<S, I>
+static_assert(!HasStablePartitionIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasStablePartitionIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !indirect_unary_predicate<projected<I, Proj>>
+static_assert(!HasStablePartitionIter<int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasStablePartitionIter<int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !permutable<I>
+static_assert(!HasStablePartitionIter<PermutableNotForwardIterator>);
+static_assert(!HasStablePartitionIter<PermutableNotSwappable>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Pred>
+concept HasStablePartitionRange =
+    requires(Range&& range, Pred&& pred) {
+      std::ranges::stable_partition(std::forward<Range>(range), std::forward<Pred>(pred));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasStablePartitionRange<R<int*>, UnaryPred>);
+
+// !bidirectional_range<R>
+static_assert(!HasStablePartitionRange<BidirectionalRangeNotDerivedFrom, UnaryPred>);
+static_assert(!HasStablePartitionRange<BidirectionalRangeNotDecrementable, UnaryPred>);
+
+// !indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+static_assert(!HasStablePartitionRange<R<int*>, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasStablePartitionRange<R<int*>, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !permutable<iterator_t<R>>
+static_assert(!HasStablePartitionRange<R<PermutableNotForwardIterator>, UnaryPred>);
+static_assert(!HasStablePartitionRange<R<PermutableNotSwappable>, UnaryPred>);
+
+template <class Iter, class Sent, size_t N, class Pred>
+void test_one(std::array<int, N> input, Pred pred, size_t partition_point, std::array<int, N> expected) {
+  auto neg_pred = [&](int x) { return !pred(x); };
+
+  { // (iterator, sentinel) overload.
+    auto partitioned = input;
+    auto b = Iter(partitioned.data());
+    auto e = Sent(Iter(partitioned.data() + partitioned.size()));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::stable_partition(b, e, pred);
+
+    assert(partitioned == expected);
+    assert(base(result.begin()) == partitioned.data() + partition_point);
+    assert(base(result.end()) == partitioned.data() + partitioned.size());
+
+    assert(std::ranges::all_of(b, result.begin(), pred));
+    assert(std::ranges::all_of(result.begin(), e, neg_pred));
+  }
+
+  { // (range) overload.
+    auto partitioned = input;
+    auto b = Iter(partitioned.data());
+    auto e = Sent(Iter(partitioned.data() + partitioned.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::stable_partition(range, pred);
+
+    assert(partitioned == expected);
+    assert(base(result.begin()) == partitioned.data() + partition_point);
+    assert(base(result.end()) == partitioned.data() + partitioned.size());
+
+    assert(std::ranges::all_of(b, result.begin(), pred));
+    assert(std::ranges::all_of(result.begin(), e, neg_pred));
+  }
+}
+
+template <class Iter, class Sent>
+void test_iterators_2() {
+  auto is_odd = [](int x) { return x % 2 != 0; };
+
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, is_odd, 0, {});
+  // 1-element sequence, the element satisfies the predicate.
+  test_one<Iter, Sent, 1>({1}, is_odd, 1, {1});
+  // 1-element sequence, the element doesn't satisfy the predicate.
+  test_one<Iter, Sent, 1>({2}, is_odd, 0, {2});
+  // 2-element sequence, not in order.
+  test_one<Iter, Sent, 2>({2, 1}, is_odd, 1, {1, 2});
+  // 2-element sequence, already in order.
+  test_one<Iter, Sent, 2>({1, 2}, is_odd, 1, {1, 2});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, is_odd, 2, {1, 3, 2});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 8, 4, 11, 5}, is_odd, 4, {1, 3, 11, 5, 2, 6, 8, 4});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 2, 8, 1, 6}, is_odd, 3, {1, 3, 1, 2, 6, 2, 8, 6});
+  // All elements are the same and satisfy the predicate.
+  test_one<Iter, Sent, 3>({1, 1, 1}, is_odd, 3, {1, 1, 1});
+  // All elements are the same and don't satisfy the predicate.
+  test_one<Iter, Sent, 3>({2, 2, 2}, is_odd, 0, {2, 2, 2});
+  // Already partitioned.
+  test_one<Iter, Sent, 6>({1, 3, 5, 4, 6, 8}, is_odd, 3, {1, 3, 5, 4, 6, 8});
+  // Reverse-partitioned.
+  test_one<Iter, Sent, 6>({4, 6, 8, 1, 3, 5}, is_odd, 3, {1, 3, 5, 4, 6, 8});
+  // Repeating pattern.
+  test_one<Iter, Sent, 6>({1, 2, 1, 2, 1, 2}, is_odd, 3, {1, 1, 1, 2, 2, 2});
+
+  auto is_negative = [](int x) { return x < 0; };
+  // Different comparator.
+  test_one<Iter, Sent, 5>({-3, 5, 7, -6, 2}, is_negative, 2, {-3, -6, 5, 7, 2});
+}
+
+template <class Iter>
+void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+void test_iterators() {
+  test_iterators_1<bidirectional_iterator<int*>>();
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+void test() {
+  test_iterators();
+
+  { // The algorithm is stable (equivalent elements remain in the same order).
+    struct OrderedValue {
+      int value;
+      double original_order;
+      bool operator==(const OrderedValue&) const = default;
+    };
+
+    auto is_odd = [](OrderedValue x) { return x.value % 2 != 0; };
+
+    using V = OrderedValue;
+    using Array = std::array<V, 20>;
+    Array orig_in = {
+      V{10, 2.1}, {12, 2.2}, {3, 1.1}, {5, 1.2}, {3, 1.3}, {3, 1.4}, {11, 1.5}, {12, 2.3}, {4, 2.4}, {4, 2.5},
+      {4, 2.6}, {1, 1.6}, {6, 2.7}, {3, 1.7}, {10, 2.8}, {8, 2.9}, {12, 2.10}, {1, 1.8}, {1, 1.9}, {5, 1.10}
+    };
+    Array expected = {
+      V{3, 1.1}, {5, 1.2}, {3, 1.3}, {3, 1.4}, {11, 1.5}, {1, 1.6}, {3, 1.7}, {1, 1.8}, {1, 1.9}, {5, 1.10},
+      {10, 2.1}, {12, 2.2}, {12, 2.3}, {4, 2.4}, {4, 2.5}, {4, 2.6}, {6, 2.7}, {10, 2.8}, {8, 2.9}, {12, 2.10}
+    };
+
+    {
+      auto in = orig_in;
+      std::ranges::stable_partition(in.begin(), in.end(), is_odd);
+      assert(in == expected);
+    }
+
+    {
+      auto in = orig_in;
+      std::ranges::stable_partition(in, is_odd);
+      assert(in == expected);
+    }
+  }
+
+  { // A custom projection works.
+    const std::array input = {1, -1};
+    auto is_negative = [](int x) { return x < 0; };
+    auto negate = [](int x) { return -x; };
+    const std::array expected_no_proj = {-1, 1};
+    const std::array expected_with_proj = {1, -1};
+
+    { // (iterator, sentinel) overload.
+      {
+        auto in = input;
+        std::ranges::partition(in.begin(), in.end(), is_negative);
+        assert(in == expected_no_proj);
+      }
+      {
+        auto in = input;
+        std::ranges::partition(in.begin(), in.end(), is_negative, negate);
+        assert(in == expected_with_proj);
+      }
+    }
+
+    { // (range) overload.
+      {
+        auto in = input;
+        std::ranges::partition(in, is_negative);
+        assert(in == expected_no_proj);
+      }
+      {
+        auto in = input;
+        std::ranges::partition(in, is_negative, negate);
+        assert(in == expected_with_proj);
+      }
+    }
+  }
+}
+
+int main(int, char**) {
+  test();
+  // Note: `stable_partition` is not `constexpr`.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/stable_partition.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/stable_partition.pass.cpp
new file mode 100644
index 0000000..948ec48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.partitions/stable_partition.pass.cpp
@@ -0,0 +1,315 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Pred>
+//   Iter
+//   stable_partition(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct is_odd
+{
+    bool operator()(const int& i) const {return i & 1;}
+};
+
+struct odd_first
+{
+    bool operator()(const std::pair<int,int>& p) const
+        {return p.first & 1;}
+};
+
+template <class Iter>
+void
+test()
+{
+    {  // check mixed
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(0, 1),
+        P(0, 2),
+        P(1, 1),
+        P(1, 2),
+        P(2, 1),
+        P(2, 2),
+        P(3, 1),
+        P(3, 2),
+        P(4, 1),
+        P(4, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + 4);
+    assert(array[0] == P(1, 1));
+    assert(array[1] == P(1, 2));
+    assert(array[2] == P(3, 1));
+    assert(array[3] == P(3, 2));
+    assert(array[4] == P(0, 1));
+    assert(array[5] == P(0, 2));
+    assert(array[6] == P(2, 1));
+    assert(array[7] == P(2, 2));
+    assert(array[8] == P(4, 1));
+    assert(array[9] == P(4, 2));
+    }
+    {
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(0, 1),
+        P(0, 2),
+        P(1, 1),
+        P(1, 2),
+        P(2, 1),
+        P(2, 2),
+        P(3, 1),
+        P(3, 2),
+        P(4, 1),
+        P(4, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + 4);
+    assert(array[0] == P(1, 1));
+    assert(array[1] == P(1, 2));
+    assert(array[2] == P(3, 1));
+    assert(array[3] == P(3, 2));
+    assert(array[4] == P(0, 1));
+    assert(array[5] == P(0, 2));
+    assert(array[6] == P(2, 1));
+    assert(array[7] == P(2, 2));
+    assert(array[8] == P(4, 1));
+    assert(array[9] == P(4, 2));
+    // check empty
+    r = std::stable_partition(Iter(array), Iter(array), odd_first());
+    assert(base(r) == array);
+    // check one true
+    r = std::stable_partition(Iter(array), Iter(array+1), odd_first());
+    assert(base(r) == array+1);
+    assert(array[0] == P(1, 1));
+    // check one false
+    r = std::stable_partition(Iter(array+4), Iter(array+5), odd_first());
+    assert(base(r) == array+4);
+    assert(array[4] == P(0, 1));
+    }
+    {  // check all false
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(0, 1),
+        P(0, 2),
+        P(2, 1),
+        P(2, 2),
+        P(4, 1),
+        P(4, 2),
+        P(6, 1),
+        P(6, 2),
+        P(8, 1),
+        P(8, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array);
+    assert(array[0] == P(0, 1));
+    assert(array[1] == P(0, 2));
+    assert(array[2] == P(2, 1));
+    assert(array[3] == P(2, 2));
+    assert(array[4] == P(4, 1));
+    assert(array[5] == P(4, 2));
+    assert(array[6] == P(6, 1));
+    assert(array[7] == P(6, 2));
+    assert(array[8] == P(8, 1));
+    assert(array[9] == P(8, 2));
+    }
+    {  // check all true
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(1, 1),
+        P(1, 2),
+        P(3, 1),
+        P(3, 2),
+        P(5, 1),
+        P(5, 2),
+        P(7, 1),
+        P(7, 2),
+        P(9, 1),
+        P(9, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + size);
+    assert(array[0] == P(1, 1));
+    assert(array[1] == P(1, 2));
+    assert(array[2] == P(3, 1));
+    assert(array[3] == P(3, 2));
+    assert(array[4] == P(5, 1));
+    assert(array[5] == P(5, 2));
+    assert(array[6] == P(7, 1));
+    assert(array[7] == P(7, 2));
+    assert(array[8] == P(9, 1));
+    assert(array[9] == P(9, 2));
+    }
+    {  // check all false but first true
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(1, 1),
+        P(0, 2),
+        P(2, 1),
+        P(2, 2),
+        P(4, 1),
+        P(4, 2),
+        P(6, 1),
+        P(6, 2),
+        P(8, 1),
+        P(8, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + 1);
+    assert(array[0] == P(1, 1));
+    assert(array[1] == P(0, 2));
+    assert(array[2] == P(2, 1));
+    assert(array[3] == P(2, 2));
+    assert(array[4] == P(4, 1));
+    assert(array[5] == P(4, 2));
+    assert(array[6] == P(6, 1));
+    assert(array[7] == P(6, 2));
+    assert(array[8] == P(8, 1));
+    assert(array[9] == P(8, 2));
+    }
+    {  // check all false but last true
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(0, 1),
+        P(0, 2),
+        P(2, 1),
+        P(2, 2),
+        P(4, 1),
+        P(4, 2),
+        P(6, 1),
+        P(6, 2),
+        P(8, 1),
+        P(1, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + 1);
+    assert(array[0] == P(1, 2));
+    assert(array[1] == P(0, 1));
+    assert(array[2] == P(0, 2));
+    assert(array[3] == P(2, 1));
+    assert(array[4] == P(2, 2));
+    assert(array[5] == P(4, 1));
+    assert(array[6] == P(4, 2));
+    assert(array[7] == P(6, 1));
+    assert(array[8] == P(6, 2));
+    assert(array[9] == P(8, 1));
+    }
+    {  // check all true but first false
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(0, 1),
+        P(1, 2),
+        P(3, 1),
+        P(3, 2),
+        P(5, 1),
+        P(5, 2),
+        P(7, 1),
+        P(7, 2),
+        P(9, 1),
+        P(9, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + size-1);
+    assert(array[0] == P(1, 2));
+    assert(array[1] == P(3, 1));
+    assert(array[2] == P(3, 2));
+    assert(array[3] == P(5, 1));
+    assert(array[4] == P(5, 2));
+    assert(array[5] == P(7, 1));
+    assert(array[6] == P(7, 2));
+    assert(array[7] == P(9, 1));
+    assert(array[8] == P(9, 2));
+    assert(array[9] == P(0, 1));
+    }
+    {  // check all true but last false
+    typedef std::pair<int,int> P;
+    P array[] =
+    {
+        P(1, 1),
+        P(1, 2),
+        P(3, 1),
+        P(3, 2),
+        P(5, 1),
+        P(5, 2),
+        P(7, 1),
+        P(7, 2),
+        P(9, 1),
+        P(0, 2)
+    };
+    const unsigned size = sizeof(array)/sizeof(array[0]);
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), odd_first());
+    assert(base(r) == array + size-1);
+    assert(array[0] == P(1, 1));
+    assert(array[1] == P(1, 2));
+    assert(array[2] == P(3, 1));
+    assert(array[3] == P(3, 2));
+    assert(array[4] == P(5, 1));
+    assert(array[5] == P(5, 2));
+    assert(array[6] == P(7, 1));
+    assert(array[7] == P(7, 2));
+    assert(array[8] == P(9, 1));
+    assert(array[9] == P(0, 2));
+    }
+}
+
+#if TEST_STD_VER >= 11
+
+struct is_null
+{
+    template <class P>
+        bool operator()(const P& p) {return p == 0;}
+};
+
+template <class Iter>
+void
+test1()
+{
+    const unsigned size = 5;
+    std::unique_ptr<int> array[size];
+    Iter r = std::stable_partition(Iter(array), Iter(array+size), is_null());
+    assert(r == Iter(array+size));
+}
+
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<std::pair<int,int>*> >();
+    test<random_access_iterator<std::pair<int,int>*> >();
+    test<std::pair<int,int>*>();
+
+#if TEST_STD_VER >= 11
+    test1<bidirectional_iterator<std::unique_ptr<int>*> >();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/ranges_sample.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/ranges_sample.pass.cpp
new file mode 100644
index 0000000..0a5d83e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/ranges_sample.pass.cpp
@@ -0,0 +1,333 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O, class Gen>
+//   requires (forward_iterator<I> || random_access_iterator<O>) &&
+//           indirectly_copyable<I, O> &&
+//           uniform_random_bit_generator<remove_reference_t<Gen>>
+//   O sample(I first, S last, O out, iter_difference_t<I> n, Gen&& g);                              // Since C++20
+//
+// template<input_range R, weakly_incrementable O, class Gen>
+//   requires (forward_range<R> || random_access_iterator<O>) &&
+//           indirectly_copyable<iterator_t<R>, O> &&
+//           uniform_random_bit_generator<remove_reference_t<Gen>>
+//   O sample(R&& r, O out, range_difference_t<R> n, Gen&& g);                                       // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <random>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+class RandGen {
+public:
+  constexpr static size_t min() { return 0; }
+  constexpr static size_t max() { return 255; }
+
+  constexpr size_t operator()() {
+    flip = !flip;
+    return flip;
+  }
+
+private:
+  bool flip = false;
+};
+
+static_assert(std::uniform_random_bit_generator<RandGen>);
+// `std::uniform_random_bit_generator` is a subset of requirements of `__libcpp_random_is_valid_urng`. Make sure that
+// a type satisfying the required minimum is still accepted by `ranges::shuffle`.
+LIBCPP_STATIC_ASSERT(!std::__libcpp_random_is_valid_urng<RandGen>::value);
+
+struct BadGen {
+  constexpr static size_t min() { return 255; }
+  constexpr static size_t max() { return 0; }
+  constexpr size_t operator()() const;
+};
+static_assert(!std::uniform_random_bit_generator<BadGen>);
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Out = int*, class Gen = RandGen>
+concept HasSampleIter =
+    requires(Iter&& iter, Sent&& sent, Out&& out, std::iter_difference_t<Iter> n, Gen&& gen) {
+      std::ranges::sample(std::forward<Iter>(iter), std::forward<Sent>(sent),
+                          std::forward<Out>(out), n, std::forward<Gen>(gen));
+    };
+
+static_assert(HasSampleIter<int*, int*, int*, RandGen>);
+
+// !input_iterator<I>
+static_assert(!HasSampleIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasSampleIter<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasSampleIter<InputIteratorNotInputOrOutputIterator>);
+
+// !sentinel_for<S, I>
+static_assert(!HasSampleIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasSampleIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !weakly_incrementable<O>
+static_assert(!HasSampleIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// (forward_iterator<I> || random_access_iterator<O>)
+static_assert(HasSampleIter<
+    forward_iterator<int*>, forward_iterator<int*>,
+    cpp20_output_iterator<int*>
+>);
+static_assert(HasSampleIter<
+    cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>,
+    random_access_iterator<int*>
+>);
+// !(forward_iterator<I> || random_access_iterator<O>)
+static_assert(!HasSampleIter<
+    cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>,
+    cpp20_output_iterator<int*>
+>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasSampleIter<int*, int*, int**>);
+
+// !uniform_random_bit_generator<remove_reference_t<Gen>>
+static_assert(!HasSampleIter<int*, int*, int*, BadGen>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Out = int*, class Gen = RandGen>
+concept HasSampleRange =
+    requires(Range&& range, Out&& out, std::ranges::range_difference_t<Range> n, Gen&& gen) {
+      std::ranges::sample(std::forward<Range>(range), std::forward<Out>(out), n, std::forward<Gen>(gen));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasSampleRange<R<int*>, int*, RandGen>);
+
+// !input_range<R>
+static_assert(!HasSampleRange<InputRangeNotDerivedFrom>);
+static_assert(!HasSampleRange<InputRangeNotIndirectlyReadable>);
+static_assert(!HasSampleRange<InputRangeNotInputOrOutputIterator>);
+
+// !weakly_incrementable<O>
+static_assert(!HasSampleRange<R<int*>, WeaklyIncrementableNotMovable>);
+
+// (forward_range<R> || random_access_iterator<O>)
+static_assert(HasSampleRange<
+    R<forward_iterator<int*>>,
+    cpp20_output_iterator<int*>
+>);
+static_assert(HasSampleRange<
+    R<cpp20_input_iterator<int*>>,
+    random_access_iterator<int*>
+>);
+// !(forward_range<R> || random_access_iterator<O>)
+static_assert(!HasSampleRange<
+    R<cpp20_input_iterator<int*>>,
+    cpp20_output_iterator<int*>
+>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasSampleRange<R<int*>, int**>);
+
+// !uniform_random_bit_generator<remove_reference_t<Gen>>
+static_assert(!HasSampleRange<R<int*>, int*, BadGen>);
+
+template <class Iter, class Sent, class Out, size_t N, class Gen>
+void test_one(std::array<int, N> in, size_t n, Gen gen) {
+  assert(n <= static_cast<size_t>(N));
+
+  auto verify_is_subsequence = [&] (auto output) {
+    auto sorted_input = in;
+    std::ranges::sort(sorted_input);
+    auto sorted_output = std::ranges::subrange(output.begin(), output.begin() + n);
+    std::ranges::sort(sorted_output);
+    assert(std::ranges::includes(sorted_input, sorted_output));
+  };
+
+  { // (iterator, sentinel) overload.
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+    std::array<int, N> output;
+    auto out = Out(output.begin());
+
+    std::same_as<Out> decltype(auto) result = std::ranges::sample(
+        std::move(begin), std::move(end), std::move(out), n, gen);
+    assert(base(result) == output.data() + n);
+    verify_is_subsequence(output);
+    // The output of `sample` is implementation-specific.
+  }
+
+  { // (range) overload.
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+    std::array<int, N> output;
+    auto out = Out(output.begin());
+
+    std::same_as<Out> decltype(auto) result = std::ranges::sample(std::ranges::subrange(
+        std::move(begin), std::move(end)), std::move(out), n, gen);
+    assert(base(result) == output.data() + n);
+    verify_is_subsequence(output);
+    // The output of `sample` is implementation-specific.
+  }
+}
+
+template <class Iter, class Sent, class Out>
+void test_iterators_iter_sent_out() {
+  RandGen gen;
+
+  // Empty sequence.
+  test_one<Iter, Sent, Out, 0>({}, 0, gen);
+  // 1-element sequence.
+  test_one<Iter, Sent, Out, 1>({1}, 1, gen);
+  // 2-element sequence.
+  test_one<Iter, Sent, Out, 2>({1, 2}, 1, gen);
+  test_one<Iter, Sent, Out, 2>({1, 2}, 2, gen);
+  // n == 0.
+  test_one<Iter, Sent, Out, 3>({1, 2, 3}, 0, gen);
+
+  // Longer sequence.
+  {
+    std::array input = {1, 8, 2, 3, 4, 6, 5, 7};
+    for (int i = 0; i <= static_cast<int>(input.size()); ++i){
+      test_one<Iter, Sent, Out, input.size()>(input, i, gen);
+    }
+  }
+}
+
+template <class Iter, class Sent>
+void test_iterators_iter_sent() {
+  if constexpr (std::forward_iterator<Iter>) {
+    test_iterators_iter_sent_out<Iter, Sent, cpp20_output_iterator<int*>>();
+    test_iterators_iter_sent_out<Iter, Sent, forward_iterator<int*>>();
+  }
+  test_iterators_iter_sent_out<Iter, Sent, random_access_iterator<int*>>();
+  test_iterators_iter_sent_out<Iter, Sent, contiguous_iterator<int*>>();
+  test_iterators_iter_sent_out<Iter, Sent, int*>();
+}
+
+template <class Iter>
+void test_iterators_iter() {
+  if constexpr (std::sentinel_for<Iter, Iter>) {
+    test_iterators_iter_sent<Iter, Iter>();
+  }
+  test_iterators_iter_sent<Iter, sentinel_wrapper<Iter>>();
+}
+
+void test_iterators() {
+  test_iterators_iter<cpp20_input_iterator<int*>>();
+  test_iterators_iter<random_access_iterator<int*>>();
+  test_iterators_iter<contiguous_iterator<int*>>();
+  test_iterators_iter<int*>();
+  test_iterators_iter<const int*>();
+}
+
+// Checks the logic for wrapping the given iterator to make sure it works correctly regardless of the value category of
+// the given generator object.
+template <class Gen, bool CheckConst = true>
+void test_generator() {
+  std::array in = {1, 2, 3, 4, 5, 6, 7, 8};
+  constexpr int N = 5;
+  std::array<int, N> output;
+  auto begin = in.begin();
+  auto end = in.end();
+  auto out = output.begin();
+
+  { // Lvalue.
+    Gen g;
+    std::ranges::sample(begin, end, out, N, g);
+    std::ranges::sample(in, out, N, g);
+  }
+
+  if constexpr (CheckConst) { // Const lvalue.
+    const Gen g;
+    std::ranges::sample(begin, end, out, N, g);
+    std::ranges::sample(in, out, N, g);
+  }
+
+  { // Prvalue.
+    std::ranges::sample(begin, end, out, N, Gen());
+    std::ranges::sample(in, out, N, Gen());
+  }
+
+  { // Xvalue.
+    Gen g1, g2;
+    std::ranges::sample(begin, end, out, N, std::move(g1));
+    std::ranges::sample(in, out, N, std::move(g2));
+  }
+}
+
+// Checks the logic for wrapping the given iterator to make sure it works correctly regardless of whether the given
+// generator class has a const or non-const invocation operator (or both).
+void test_generators() {
+  struct GenBase {
+    constexpr static size_t min() { return 0; }
+    constexpr static size_t max() { return 255; }
+  };
+  struct NonconstGen : GenBase {
+    size_t operator()() { return 1; }
+  };
+  struct ConstGen : GenBase {
+    size_t operator()() const { return 1; }
+  };
+  struct ConstAndNonconstGen : GenBase {
+    size_t operator()() { return 1; }
+    size_t operator()() const { return 1; }
+  };
+
+  test_generator<ConstGen>();
+  test_generator<NonconstGen, /*CheckConst=*/false>();
+  test_generator<ConstAndNonconstGen>();
+}
+
+void test() {
+  test_iterators();
+  test_generators();
+
+  { // Stable (if `I` models `forward_iterator`).
+    struct OrderedValue {
+      int value;
+      int original_order;
+      bool operator==(const OrderedValue&) const = default;
+      auto operator<=>(const OrderedValue& rhs) const { return value <=> rhs.value; }
+    };
+
+    const std::array<OrderedValue, 8> in = {{
+      {1, 1}, {1, 2}, {1, 3}, {1, 4}, {1, 5}, {1, 6}, {1, 7}, {1, 8}
+    }};
+
+    { // (iterator, sentinel) overload.
+      std::array<OrderedValue, in.size()> out;
+      std::ranges::sample(in.begin(), in.end(), out.begin(), in.size(), RandGen());
+      assert(out == in);
+    }
+
+    { // (range) overload.
+      std::array<OrderedValue, in.size()> out;
+      std::ranges::sample(in, out.begin(), in.size(), RandGen());
+      assert(out == in);
+    }
+  }
+}
+
+int main(int, char**) {
+  test();
+  // Note: `ranges::sample` is not `constexpr`.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.fail.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.fail.cpp
new file mode 100644
index 0000000..992a3e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.fail.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <algorithm>
+
+// template <class PopulationIterator, class SampleIterator, class Distance,
+//           class UniformRandomNumberGenerator>
+// SampleIterator sample(PopulationIterator first, PopulationIterator last,
+//                       SampleIterator out, Distance n,
+//                       UniformRandomNumberGenerator &&g);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class PopulationIterator, class SampleIterator> void test() {
+  int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+  const unsigned is = sizeof(ia) / sizeof(ia[0]);
+  const unsigned os = 4;
+  int oa[os];
+  std::minstd_rand g;
+  std::sample(PopulationIterator(ia), PopulationIterator(ia + is),
+                            SampleIterator(oa), os, g);
+}
+
+int main(int, char**) {
+  // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '.*')?}}{{.*}}SampleIterator must meet the requirements of RandomAccessIterator}}
+  // expected-error@*:* 2 {{does not provide a subscript operator}}
+  // expected-error@*:* {{invalid operands}}
+  test<cpp17_input_iterator<int *>, cpp17_output_iterator<int *> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.pass.cpp
new file mode 100644
index 0000000..ed89a5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <algorithm>
+
+// template <class PopulationIterator, class SampleIterator, class Distance,
+//           class UniformRandomNumberGenerator>
+// SampleIterator sample(PopulationIterator first, PopulationIterator last,
+//                       SampleIterator out, Distance n,
+//                       UniformRandomNumberGenerator &&g);
+
+#include <algorithm>
+#include <random>
+#include <type_traits>
+#include <cassert>
+#include <cstddef>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+struct ReservoirSampleExpectations {
+  enum { os = 4 };
+  static int oa1[os];
+  static int oa2[os];
+};
+
+int ReservoirSampleExpectations::oa1[] = {10, 5, 9, 4};
+int ReservoirSampleExpectations::oa2[] = {5, 2, 10, 4};
+
+struct SelectionSampleExpectations {
+  enum { os = 4 };
+  static int oa1[os];
+  static int oa2[os];
+};
+
+int SelectionSampleExpectations::oa1[] = {1, 4, 6, 7};
+int SelectionSampleExpectations::oa2[] = {1, 2, 6, 8};
+
+template <class IteratorCategory> struct TestExpectations
+    : public SelectionSampleExpectations {};
+
+template <>
+struct TestExpectations<std::input_iterator_tag>
+    : public ReservoirSampleExpectations {};
+
+template <template<class...> class PopulationIteratorType, class PopulationItem,
+          template<class...> class SampleIteratorType, class SampleItem>
+void test() {
+  typedef PopulationIteratorType<PopulationItem *> PopulationIterator;
+  typedef SampleIteratorType<SampleItem *> SampleIterator;
+  PopulationItem ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+  const unsigned is = sizeof(ia) / sizeof(ia[0]);
+  typedef TestExpectations<typename std::iterator_traits<
+      PopulationIterator>::iterator_category> Expectations;
+  const unsigned os = Expectations::os;
+  SampleItem oa[os];
+  const int *oa1 = Expectations::oa1;
+  ((void)oa1); // Prevent unused warning
+  const int *oa2 = Expectations::oa2;
+  ((void)oa2); // Prevent unused warning
+  std::minstd_rand g;
+  SampleIterator end = std::sample(PopulationIterator(ia),
+                                   PopulationIterator(ia + is),
+                                   SampleIterator(oa), os, g);
+  assert(static_cast<std::size_t>(base(end) - oa) == std::min(os, is));
+  // sample() is deterministic but non-reproducible;
+  // its results can vary between implementations.
+  LIBCPP_ASSERT(std::equal(oa, oa + os, oa1));
+  end = std::sample(PopulationIterator(ia),
+                                  PopulationIterator(ia + is),
+                                  SampleIterator(oa), os, std::move(g));
+  assert(static_cast<std::size_t>(base(end) - oa) == std::min(os, is));
+  LIBCPP_ASSERT(std::equal(oa, oa + os, oa2));
+}
+
+template <template<class...> class PopulationIteratorType, class PopulationItem,
+          template<class...> class SampleIteratorType, class SampleItem>
+void test_empty_population() {
+  typedef PopulationIteratorType<PopulationItem *> PopulationIterator;
+  typedef SampleIteratorType<SampleItem *> SampleIterator;
+  PopulationItem ia[] = {42};
+  const unsigned os = 4;
+  SampleItem oa[os];
+  std::minstd_rand g;
+  SampleIterator end =
+      std::sample(PopulationIterator(ia), PopulationIterator(ia),
+                                SampleIterator(oa), os, g);
+  assert(base(end) == oa);
+}
+
+template <template<class...> class PopulationIteratorType, class PopulationItem,
+          template<class...> class SampleIteratorType, class SampleItem>
+void test_empty_sample() {
+  typedef PopulationIteratorType<PopulationItem *> PopulationIterator;
+  typedef SampleIteratorType<SampleItem *> SampleIterator;
+  PopulationItem ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+  const unsigned is = sizeof(ia) / sizeof(ia[0]);
+  SampleItem oa[1];
+  std::minstd_rand g;
+  SampleIterator end =
+      std::sample(PopulationIterator(ia), PopulationIterator(ia + is),
+                                SampleIterator(oa), 0, g);
+  assert(base(end) == oa);
+}
+
+template <template<class...> class PopulationIteratorType, class PopulationItem,
+          template<class...> class SampleIteratorType, class SampleItem>
+void test_small_population() {
+  // The population size is less than the sample size.
+  typedef PopulationIteratorType<PopulationItem *> PopulationIterator;
+  typedef SampleIteratorType<SampleItem *> SampleIterator;
+  PopulationItem ia[] = {1, 2, 3, 4, 5};
+  const unsigned is = sizeof(ia) / sizeof(ia[0]);
+  const unsigned os = 8;
+  SampleItem oa[os];
+  const SampleItem oa1[] = {1, 2, 3, 4, 5};
+  std::minstd_rand g;
+  SampleIterator end = std::sample(PopulationIterator(ia),
+                                   PopulationIterator(ia + is),
+                                   SampleIterator(oa), os, g);
+  assert(static_cast<std::size_t>(base(end) - oa) == std::min(os, is));
+  typedef typename std::iterator_traits<PopulationIterator>::iterator_category PopulationCategory;
+  if (std::is_base_of<std::forward_iterator_tag, PopulationCategory>::value) {
+    assert(std::equal(oa, base(end), oa1));
+  } else {
+    assert(std::is_permutation(oa, base(end), oa1));
+  }
+}
+
+int main(int, char**) {
+  test<cpp17_input_iterator, int, random_access_iterator, int>();
+  test<forward_iterator, int, cpp17_output_iterator, int>();
+  test<forward_iterator, int, random_access_iterator, int>();
+
+  test<cpp17_input_iterator, int, random_access_iterator, double>();
+  test<forward_iterator, int, cpp17_output_iterator, double>();
+  test<forward_iterator, int, random_access_iterator, double>();
+
+  test_empty_population<cpp17_input_iterator, int, random_access_iterator, int>();
+  test_empty_population<forward_iterator, int, cpp17_output_iterator, int>();
+  test_empty_population<forward_iterator, int, random_access_iterator, int>();
+
+  test_empty_sample<cpp17_input_iterator, int, random_access_iterator, int>();
+  test_empty_sample<forward_iterator, int, cpp17_output_iterator, int>();
+  test_empty_sample<forward_iterator, int, random_access_iterator, int>();
+
+  test_small_population<cpp17_input_iterator, int, random_access_iterator, int>();
+  test_small_population<forward_iterator, int, cpp17_output_iterator, int>();
+  test_small_population<forward_iterator, int, random_access_iterator, int>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.stable.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.stable.pass.cpp
new file mode 100644
index 0000000..99ae687
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.sample/sample.stable.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <algorithm>
+
+// template <class PopulationIterator, class SampleIterator, class Distance,
+//           class UniformRandomNumberGenerator>
+// SampleIterator sample(PopulationIterator first, PopulationIterator last,
+//                       SampleIterator out, Distance n,
+//                       UniformRandomNumberGenerator &&g);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// Stable if and only if PopulationIterator meets the requirements of a
+// ForwardIterator type.
+template <class PopulationIterator, class SampleIterator>
+void test_stability(bool expect_stable) {
+  const unsigned kPopulationSize = 100;
+  int ia[kPopulationSize];
+  for (unsigned i = 0; i < kPopulationSize; ++i)
+    ia[i] = i;
+  PopulationIterator first(ia);
+  PopulationIterator last(ia + kPopulationSize);
+
+  const unsigned kSampleSize = 20;
+  int oa[kPopulationSize];
+  SampleIterator out(oa);
+
+  std::minstd_rand g;
+
+  const int kIterations = 1000;
+  bool unstable = false;
+  for (int i = 0; i < kIterations; ++i) {
+    std::sample(first, last, out, kSampleSize, g);
+    unstable |= !std::is_sorted(oa, oa + kSampleSize);
+  }
+  assert(expect_stable == !unstable);
+}
+
+int main(int, char**) {
+  test_stability<forward_iterator<int *>, cpp17_output_iterator<int *> >(true);
+  test_stability<cpp17_input_iterator<int *>, random_access_iterator<int *> >(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp
new file mode 100644
index 0000000..087a498
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter>
+//   void
+//   random_shuffle(Iter first, Iter last);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter>
+void
+test_with_iterator()
+{
+    int empty[] = {};
+    std::random_shuffle(Iter(empty), Iter(empty));
+
+    const int all_elements[] = {1, 2, 3, 4};
+    int           shuffled[] = {1, 2, 3, 4};
+    const unsigned size = sizeof(all_elements)/sizeof(all_elements[0]);
+
+    std::random_shuffle(Iter(shuffled), Iter(shuffled+size));
+    assert(std::is_permutation(shuffled, shuffled+size, all_elements));
+
+    std::random_shuffle(Iter(shuffled), Iter(shuffled+size));
+    assert(std::is_permutation(shuffled, shuffled+size, all_elements));
+}
+
+
+int main(int, char**)
+{
+    int ia[]  = {1, 2, 3, 4};
+    int ia1[] = {1, 4, 3, 2};
+    int ia2[] = {4, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+
+    std::random_shuffle(ia, ia+sa);
+    LIBCPP_ASSERT(std::equal(ia, ia+sa, ia1));
+    assert(std::is_permutation(ia, ia+sa, ia1));
+
+    std::random_shuffle(ia, ia+sa);
+    LIBCPP_ASSERT(std::equal(ia, ia+sa, ia2));
+    assert(std::is_permutation(ia, ia+sa, ia2));
+
+    test_with_iterator<random_access_iterator<int*> >();
+    test_with_iterator<int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_rand.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_rand.pass.cpp
new file mode 100644
index 0000000..5a2b58f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_rand.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, Callable<auto, Iter::difference_type> Rand>
+//   requires ShuffleIterator<Iter>
+//         && Convertible<Rand::result_type, Iter::difference_type>
+//   void
+//   random_shuffle(Iter first, Iter last, Rand&& rand);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+
+struct gen
+{
+    std::ptrdiff_t operator()(std::ptrdiff_t n)
+    {
+        return n-1;
+    }
+};
+
+
+template <class Iter>
+void
+test_with_iterator()
+{
+
+    int ia[] = {1, 2, 3, 4};
+    int ia1[] = {4, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    gen r;
+
+    std::random_shuffle(ia, ia+sa, r);
+    LIBCPP_ASSERT(std::equal(ia, ia+sa, ia1));
+    assert(std::is_permutation(ia, ia+sa, ia1));
+
+    std::random_shuffle(ia, ia+sa, r);
+    assert(std::is_permutation(ia, ia+sa, ia1));
+}
+
+
+int main(int, char**)
+{
+    test_with_iterator<random_access_iterator<int*> >();
+    test_with_iterator<int*>();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_urng.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_urng.pass.cpp
new file mode 100644
index 0000000..d5f162b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/random_shuffle_urng.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class RandomAccessIterator, class UniformRandomNumberGenerator>
+//     void shuffle(RandomAccessIterator first, RandomAccessIterator last,
+//                  UniformRandomNumberGenerator& g);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int ia[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+    int ia1[] = {2, 7, 1, 4, 3, 6, 5, 10, 9, 8};
+    int ia2[] = {1, 8, 3, 4, 6, 9, 5, 7, 2, 10};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    std::minstd_rand g;
+    std::shuffle(ia, ia+sa, g);
+    LIBCPP_ASSERT(std::equal(ia, ia+sa, ia1));
+    assert(std::is_permutation(ia, ia+sa, ia1));
+    std::shuffle(ia, ia+sa, std::move(g));
+    LIBCPP_ASSERT(std::equal(ia, ia+sa, ia2));
+    assert(std::is_permutation(ia, ia+sa, ia2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/ranges_shuffle.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/ranges_shuffle.pass.cpp
new file mode 100644
index 0000000..6f6be6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.random.shuffle/ranges_shuffle.pass.cpp
@@ -0,0 +1,268 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Gen>
+//   requires permutable<I> &&
+//            uniform_random_bit_generator<remove_reference_t<Gen>>
+//   I shuffle(I first, S last, Gen&& g);                                                           // Since C++20
+//
+// template<random_access_range R, class Gen>
+//   requires permutable<iterator_t<R>> &&
+//            uniform_random_bit_generator<remove_reference_t<Gen>>
+//   borrowed_iterator_t<R> shuffle(R&& r, Gen&& g);                                                // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <random>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+class RandGen {
+public:
+  constexpr static size_t min() { return 0; }
+  constexpr static size_t max() { return 255; }
+
+  constexpr size_t operator()() {
+    flip = !flip;
+    return flip;
+  }
+
+private:
+  bool flip = false;
+};
+
+static_assert(std::uniform_random_bit_generator<RandGen>);
+// `std::uniform_random_bit_generator` is a subset of requirements of `__libcpp_random_is_valid_urng`. Make sure that
+// a type satisfying the required minimum is still accepted by `ranges::shuffle`.
+LIBCPP_STATIC_ASSERT(!std::__libcpp_random_is_valid_urng<RandGen>::value);
+
+struct BadGen {
+  constexpr static size_t min() { return 255; }
+  constexpr static size_t max() { return 0; }
+  constexpr size_t operator()() const;
+};
+static_assert(!std::uniform_random_bit_generator<BadGen>);
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Gen = RandGen>
+concept HasShuffleIter =
+    requires(Iter&& iter, Sent&& sent, Gen&& gen) {
+      std::ranges::shuffle(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Gen>(gen));
+    };
+
+static_assert(HasShuffleIter<int*, int*, RandGen>);
+
+// !random_access_iterator<I>
+static_assert(!HasShuffleIter<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasShuffleIter<RandomAccessIteratorBadIndex>);
+
+// !sentinel_for<S, I>
+static_assert(!HasShuffleIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasShuffleIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !permutable<I>
+static_assert(!HasShuffleIter<PermutableNotForwardIterator>);
+static_assert(!HasShuffleIter<PermutableNotSwappable>);
+
+// !uniform_random_bit_generator<remove_reference_t<Gen>>
+static_assert(!HasShuffleIter<int*, int*, BadGen>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Gen = RandGen>
+concept HasShuffleRange =
+    requires(Range&& range, Gen&& gen) {
+      std::ranges::shuffle(std::forward<Range>(range), std::forward<Gen>(gen));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasShuffleRange<R<int*>, RandGen>);
+
+// !random_access_range<R>
+static_assert(!HasShuffleRange<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasShuffleRange<RandomAccessRangeBadIndex>);
+
+// !permutable<iterator_t<R>>
+static_assert(!HasShuffleRange<PermutableNotForwardIterator>);
+static_assert(!HasShuffleRange<PermutableNotSwappable>);
+
+// !uniform_random_bit_generator<remove_reference_t<Gen>>
+static_assert(!HasShuffleRange<R<int*>, BadGen>);
+
+template <class Iter, class Sent, size_t N, class Gen>
+void test_one(const std::array<int, N> input, Gen gen) {
+  { // (iterator, sentinel) overload.
+    auto shuffled = input;
+    auto begin = Iter(shuffled.data());
+    auto end = Sent(Iter(shuffled.data() + shuffled.size()));
+
+    std::same_as<Iter> decltype(auto) result = std::ranges::shuffle(begin, end, gen);
+
+    assert(result == Iter(shuffled.data() + shuffled.size()));
+    // TODO(ranges): uncomment `ranges::is_permutation` once https://reviews.llvm.org/D127194 lands and remove sorting.
+    //assert(std::ranges::is_permutation(shuffled, input);
+    {
+      auto shuffled_sorted = shuffled;
+      std::ranges::sort(shuffled_sorted);
+      auto original_sorted = input;
+      std::ranges::sort(original_sorted);
+      assert(shuffled_sorted == original_sorted);
+    }
+  }
+
+  { // (range) overload.
+    auto shuffled = input;
+    auto begin = Iter(shuffled.data());
+    auto end = Sent(Iter(shuffled.data() + shuffled.size()));
+    auto range = std::ranges::subrange(begin, end);
+
+    std::same_as<Iter> decltype(auto) result = std::ranges::shuffle(range, gen);
+
+    assert(result == Iter(shuffled.data() + shuffled.size()));
+    // TODO(ranges): uncomment `ranges::is_permutation` once https://reviews.llvm.org/D127194 lands and remove sorting.
+    //assert(std::ranges::is_permutation(shuffled, input);
+    {
+      auto shuffled_sorted = shuffled;
+      std::ranges::sort(shuffled_sorted);
+      auto original_sorted = input;
+      std::ranges::sort(original_sorted);
+      assert(shuffled_sorted == original_sorted);
+    }
+  }
+}
+
+template <class Iter, class Sent>
+void test_iterators_iter_sent() {
+  RandGen gen;
+
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, gen);
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, gen);
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, gen);
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, gen);
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 8, 4, 11, 5}, gen);
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 2, 8, 1, 6}, gen);
+  // All elements are the same.
+  test_one<Iter, Sent, 3>({1, 1, 1}, gen);
+}
+
+template <class Iter>
+void test_iterators_iter() {
+  test_iterators_iter_sent<Iter, Iter>();
+  test_iterators_iter_sent<Iter, sentinel_wrapper<Iter>>();
+}
+
+void test_iterators() {
+  test_iterators_iter<random_access_iterator<int*>>();
+  test_iterators_iter<contiguous_iterator<int*>>();
+  test_iterators_iter<int*>();
+}
+
+// Checks the logic for wrapping the given iterator to make sure it works correctly regardless of the value category of
+// the given generator object.
+template <class Gen, bool CheckConst = true>
+void test_generator() {
+  std::array in = {1, 2, 3, 4, 5, 6, 7, 8};
+  auto begin = in.begin();
+  auto end = in.end();
+
+  { // Lvalue.
+    Gen g;
+    std::ranges::shuffle(begin, end, g);
+    std::ranges::shuffle(in, g);
+  }
+
+  if constexpr (CheckConst) { // Const lvalue.
+    const Gen g;
+    std::ranges::shuffle(begin, end, g);
+    std::ranges::shuffle(in, g);
+  }
+
+  { // Prvalue.
+    std::ranges::shuffle(begin, end, Gen());
+    std::ranges::shuffle(in, Gen());
+  }
+
+  { // Xvalue.
+    Gen g1, g2;
+    std::ranges::shuffle(begin, end, std::move(g1));
+    std::ranges::shuffle(in, std::move(g2));
+  }
+}
+
+// Checks the logic for wrapping the given iterator to make sure it works correctly regardless of whether the given
+// generator class has a const or non-const invocation operator (or both).
+void test_generators() {
+  struct GenBase {
+    constexpr static size_t min() { return 0; }
+    constexpr static size_t max() { return 255; }
+  };
+  struct NonconstGen : GenBase {
+    size_t operator()() { return 1; }
+  };
+  struct ConstGen : GenBase {
+    size_t operator()() const { return 1; }
+  };
+  struct ConstAndNonconstGen : GenBase {
+    size_t operator()() { return 1; }
+    size_t operator()() const { return 1; }
+  };
+
+  test_generator<ConstGen>();
+  test_generator<NonconstGen, /*CheckConst=*/false>();
+  test_generator<ConstAndNonconstGen>();
+}
+
+void test() {
+  test_iterators();
+  test_generators();
+
+  { // Complexity: Exactly `(last - first) - 1` swaps.
+    {
+      std::array in = {-2, -5, -8, -11, -10, -5, 1, 3, 9, 6, 8, 2, 4, 2}; //14
+
+      int swaps = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps);
+
+      std::ranges::shuffle(begin, end, RandGen());
+      int expected = in.size() - 1;
+      // Note: our implementation doesn't perform a swap when the distribution returns 0, so the actual number of swaps
+      // might be less than specified in the standard.
+      assert(swaps <= expected);
+      swaps = 0;
+    }
+  }
+}
+
+int main(int, char**) {
+  test();
+  // Note: `ranges::shuffle` is not `constexpr`.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges.remove.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges.remove.pass.cpp
new file mode 100644
index 0000000..7836ded
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges.remove.pass.cpp
@@ -0,0 +1,206 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<permutable I, sentinel_for<I> S, class T, class Proj = identity>
+//   requires indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
+//   constexpr subrange<I> ranges::remove(I first, S last, const T& value, Proj proj = {});
+// template<forward_range R, class T, class Proj = identity>
+//   requires permutable<iterator_t<R>> &&
+//            indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T*>
+//   constexpr borrowed_subrange_t<R>
+//     ranges::remove(R&& r, const T& value, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasRemoveIt = requires(Iter first, Sent last) { std::ranges::remove(first, last, 0); };
+
+static_assert(HasRemoveIt<int*>);
+static_assert(!HasRemoveIt<PermutableNotForwardIterator>);
+static_assert(!HasRemoveIt<PermutableNotSwappable>);
+static_assert(!HasRemoveIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasRemoveIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRemoveIt<int**>); // not indirect_binary_prediacte
+
+template <class Range>
+concept HasRemoveR = requires(Range range) { std::ranges::remove(range, 0); };
+
+static_assert(HasRemoveR<UncheckedRange<int*>>);
+static_assert(!HasRemoveR<PermutableRangeNotForwardIterator>);
+static_assert(!HasRemoveR<PermutableRangeNotSwappable>);
+static_assert(!HasRemoveR<SentinelForNotSemiregular>);
+static_assert(!HasRemoveR<SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRemoveR<UncheckedRange<int**>>); // not indirect_binary_prediacte
+
+template <int N, int M>
+struct Data {
+  std::array<int, N> input;
+  std::array<int, M> expected;
+  int val;
+};
+
+template <class Iter, class Sent, int N, int M>
+constexpr void test(Data<N, M> d) {
+  { // iterator overload
+    auto input = d.input;
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) ret =
+        std::ranges::remove(Iter(input.data()), Sent(Iter(input.data() + input.size())), d.val);
+
+    assert(base(ret.begin()) == input.data() + M);
+    assert(base(ret.end()) == input.data() + N);
+    assert(std::ranges::equal(input.begin(), base(ret.begin()), d.expected.begin(), d.expected.end()));
+  }
+
+  { // range overload
+    auto input = d.input;
+    auto range = std::ranges::subrange(Iter(input.data()), Sent(Iter(input.data() + input.size())));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) ret = std::ranges::remove(range, d.val);
+
+    assert(base(ret.begin()) == input.data() + M);
+    assert(base(ret.end()) == input.data() + N);
+    assert(std::ranges::equal(base(input.begin()), base(ret.begin()), d.expected.begin(), d.expected.end()));
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void tests() {
+  // simple test
+  test<Iter, Sent, 6, 5>({.input = {1, 2, 3, 4, 5, 6}, .expected = {1, 2, 3, 4, 6}, .val = 5});
+  // empty range
+  test<Iter, Sent, 0, 0>({});
+  // single element range - match
+  test<Iter, Sent, 1, 0>({.input = {1}, .expected = {}, .val = 1});
+  // single element range - no match
+  test<Iter, Sent, 1, 1>({.input = {1}, .expected = {1}, .val = 2});
+  // two element range - same order
+  test<Iter, Sent, 2, 1>({.input = {1, 2}, .expected = {1}, .val = 2});
+  // two element range - reversed order
+  test<Iter, Sent, 2, 1>({.input = {1, 2}, .expected = {2}, .val = 1});
+  // all elements match
+  test<Iter, Sent, 5, 0>({.input = {1, 1, 1, 1, 1}, .expected = {}, .val = 1});
+  // the relative order of elements isn't changed
+  test<Iter, Sent, 8, 5>({.input = {1, 2, 3, 2, 3, 4, 2, 5}, .expected = {1, 3, 3, 4, 5}, .val = 2});
+}
+
+template <class Iter>
+constexpr void test_sentinels() {
+  tests<Iter, Iter>();
+  tests<Iter, sentinel_wrapper<Iter>>();
+  tests<Iter, sized_sentinel<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_sentinels<forward_iterator<int*>>();
+  test_sentinels<bidirectional_iterator<int*>>();
+  test_sentinels<random_access_iterator<int*>>();
+  test_sentinels<contiguous_iterator<int*>>();
+  test_sentinels<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::remove(std::array{1, 2, 3, 4}, 1);
+  }
+
+  { // check complexity requirements
+    struct CompCounter {
+      int* comp_count;
+
+      constexpr bool operator==(const CompCounter&) const {
+        ++*comp_count;
+        return false;
+      }
+    };
+    {
+      int proj_count = 0;
+      auto proj      = [&](CompCounter i) {
+        ++proj_count;
+        return i;
+      };
+      int comp_count = 0;
+
+      CompCounter a[] = {{&comp_count}, {&comp_count}, {&comp_count}, {&comp_count}};
+      auto ret        = std::ranges::remove(std::begin(a), std::end(a), CompCounter{&comp_count}, proj);
+      assert(ret.begin() == std::end(a) && ret.end() == std::end(a));
+      assert(comp_count == 4);
+      assert(proj_count == 4);
+    }
+    {
+      int proj_count = 0;
+      auto proj      = [&](CompCounter i) {
+        ++proj_count;
+        return i;
+      };
+      int comp_count = 0;
+
+      CompCounter a[] = {{&comp_count}, {&comp_count}, {&comp_count}, {&comp_count}};
+      auto ret        = std::ranges::remove(a, CompCounter{&comp_count}, proj);
+      assert(ret.begin() == std::end(a) && ret.end() == std::end(a));
+      assert(comp_count == 4);
+      assert(proj_count == 4);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S& identity() { return *this; }
+      bool operator==(const S&) const = default;
+    };
+    {
+      S a[4]   = {};
+      auto ret = std::ranges::remove(std::begin(a), std::end(a), S{}, &S::identity);
+      assert(ret.begin() == std::begin(a));
+      assert(ret.end() == std::end(a));
+    }
+    {
+      S a[4]   = {};
+      auto ret = std::ranges::remove(a, S{}, &S::identity);
+      assert(ret.begin() == std::begin(a));
+      assert(ret.end() == std::end(a));
+    }
+  }
+
+  {
+    // check that the implicit conversion to bool works
+    {
+      StrictComparable<int> a[] = {1, 2, 3, 4};
+      auto ret                  = std::ranges::remove(a, a + 4, StrictComparable<int>{2});
+      assert(ret.begin() == a + 3);
+    }
+    {
+      StrictComparable<int> a[] = {1, 2, 3, 4};
+      auto ret                  = std::ranges::remove(a, StrictComparable<int>{2});
+      assert(ret.begin() == a + 3);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges.remove_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges.remove_if.pass.cpp
new file mode 100644
index 0000000..1db4f17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges.remove_if.pass.cpp
@@ -0,0 +1,223 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<permutable I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr subrange<I> ranges::remove_if(I first, S last, Pred pred, Proj proj = {});
+// template<forward_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires permutable<iterator_t<R>>
+//   constexpr borrowed_subrange_t<R>
+//     ranges::remove_if(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+struct FalsePredicate {
+  bool operator()(int) { return false; }
+};
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasRemoveIfIt = requires(Iter first, Sent last) { std::ranges::remove_if(first, last, FalsePredicate{}); };
+
+static_assert(HasRemoveIfIt<int*>);
+static_assert(!HasRemoveIfIt<PermutableNotForwardIterator>);
+static_assert(!HasRemoveIfIt<PermutableNotSwappable>);
+static_assert(!HasRemoveIfIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasRemoveIfIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRemoveIfIt<int**>); // not indirect_unary_predicate
+
+template <class Range>
+concept HasRemoveIfR = requires(Range range) { std::ranges::remove_if(range, FalsePredicate{}); };
+
+static_assert(HasRemoveIfR<UncheckedRange<int*>>);
+static_assert(!HasRemoveIfR<PermutableRangeNotForwardIterator>);
+static_assert(!HasRemoveIfR<PermutableRangeNotSwappable>);
+static_assert(!HasRemoveIfR<SentinelForNotSemiregular>);
+static_assert(!HasRemoveIfR<SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRemoveIfR<UncheckedRange<int**>>); // not indirect_unary_predicate
+
+template <int N, int M>
+struct Data {
+  std::array<int, N> input;
+  std::array<int, M> expected;
+  int cutoff;
+};
+
+template <class Iter, class Sent, int N, int M>
+constexpr void test(Data<N, M> d) {
+  { // iterator overload
+    auto input = d.input;
+
+    auto first = Iter(input.data());
+    auto last  = Sent(Iter(input.data() + input.size()));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) ret =
+        std::ranges::remove_if(std::move(first), std::move(last), [&](int i) { return i < d.cutoff; });
+
+    assert(base(ret.begin()) == input.data() + M);
+    assert(base(ret.end()) == input.data() + N);
+    assert(std::ranges::equal(input.data(), base(ret.begin()), d.expected.begin(), d.expected.end()));
+  }
+
+  { // range overload
+    auto input = d.input;
+    auto range = std::ranges::subrange(Iter(input.data()), Sent(Iter(input.data() + input.size())));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) ret = std::ranges::remove_if(range, [&](int i) {
+      return i < d.cutoff;
+    });
+
+    assert(base(ret.begin()) == input.data() + M);
+    assert(base(ret.end()) == input.data() + N);
+    assert(std::ranges::equal(base(input.begin()), base(ret.begin()), d.expected.begin(), d.expected.end()));
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void tests() {
+  // simple test
+  test<Iter, Sent, 6, 2>({.input = {1, 2, 3, 4, 5, 6}, .expected = {5, 6}, .cutoff = 5});
+  // empty range
+  test<Iter, Sent, 0, 0>({});
+  // single element range - no match
+  test<Iter, Sent, 1, 1>({.input = {1}, .expected = {1}, .cutoff = 1});
+  // single element range - match
+  test<Iter, Sent, 1, 0>({.input = {1}, .expected = {}, .cutoff = 2});
+  // two element range
+  test<Iter, Sent, 2, 1>({.input = {1, 2}, .expected = {2}, .cutoff = 2});
+  // all elements match
+  test<Iter, Sent, 5, 0>({.input = {1, 1, 1, 1, 1}, .expected = {}, .cutoff = 2});
+  // no elements match
+  test<Iter, Sent, 5, 5>({.input = {1, 1, 1, 1, 1}, .expected = {1, 1, 1, 1, 1}, .cutoff = 0});
+  // the relative order of elements isn't changed
+  test<Iter, Sent, 8, 7>({.input = {1, 2, 3, 2, 3, 4, 2, 5}, .expected = {2, 3, 2, 3, 4, 2, 5}, .cutoff = 2});
+  // multiple matches in a row
+  test<Iter, Sent, 5, 3>({.input = {1, 2, 2, 2, 1}, .expected = {2, 2, 2}, .cutoff = 2});
+  // only the last element matches
+  test<Iter, Sent, 3, 2>({.input = {2, 2, 1}, .expected = {2, 2}, .cutoff = 2});
+  // only the last element doesn't match
+  test<Iter, Sent, 3, 1>({.input = {1, 1, 2}, .expected = {2}, .cutoff = 2});
+}
+
+template <class Iter>
+constexpr void test_sentinels() {
+  tests<Iter, Iter>();
+  tests<Iter, sentinel_wrapper<Iter>>();
+  tests<Iter, sized_sentinel<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_sentinels<forward_iterator<int*>>();
+  test_sentinels<bidirectional_iterator<int*>>();
+  test_sentinels<random_access_iterator<int*>>();
+  test_sentinels<contiguous_iterator<int*>>();
+  test_sentinels<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::remove_if(std::array{1, 2, 3, 4}, [](int i) { return i < 0; });
+  }
+
+  {// check complexity requirements
+
+   // This is https://llvm.org/PR56382 - clang-format behaves weird if function-local structs are used
+   // clang-format off
+    {
+      int comp_count = 0;
+      auto comp = [&](int i) {
+        ++comp_count;
+        return i == 0;
+      };
+      int proj_count = 0;
+      auto proj      = [&](int i) {
+        ++proj_count;
+        return i;
+      };
+      int a[]  = {1, 2, 3, 4};
+      auto ret = std::ranges::remove_if(std::begin(a), std::end(a), comp, proj);
+      assert(ret.begin() == std::end(a) && ret.end() == std::end(a));
+      assert(comp_count == 4);
+      assert(proj_count == 4);
+    }
+    {
+      int comp_count = 0;
+      auto comp      = [&](int i) {
+        ++comp_count;
+        return i == 0;
+      };
+      int proj_count = 0;
+      auto proj      = [&](int i) {
+        ++proj_count;
+        return i;
+      };
+      int a[]  = {1, 2, 3, 4};
+      auto ret = std::ranges::remove_if(a, comp, proj);
+      assert(ret.begin() == std::end(a) && ret.end() == std::end(a));
+      assert(comp_count == 4);
+      assert(proj_count == 4);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S& identity() { return *this; }
+      constexpr bool predicate() const { return true; }
+    };
+    {
+      S a[4]   = {};
+      auto ret = std::ranges::remove_if(std::begin(a), std::end(a), &S::predicate, &S::identity);
+      assert(ret.begin() == std::begin(a));
+      assert(ret.end() == std::end(a));
+    }
+    {
+      S a[4]   = {};
+      auto ret = std::ranges::remove_if(a, &S::predicate, &S::identity);
+      assert(ret.begin() == std::begin(a));
+      assert(ret.end() == std::end(a));
+    }
+  }
+
+  {
+    // check that the implicit conversion to bool works
+    {
+      int a[]  = {1, 2, 3, 4};
+      auto ret = std::ranges::remove_if(a, a + 4, [](const int& i) { return BooleanTestable{i == 3}; });
+      assert(ret.begin() == a + 3);
+    }
+    {
+      int a[]  = {1, 2, 3, 4};
+      auto ret = std::ranges::remove_if(a, [](const int& b) { return BooleanTestable{b == 3}; });
+      assert(ret.begin() == a + 3);
+    }
+  }
+
+  return true;
+}
+// clang-format on
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges_remove_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges_remove_copy.pass.cpp
new file mode 100644
index 0000000..9c09b44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges_remove_copy.pass.cpp
@@ -0,0 +1,258 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O, class T,
+//          class Proj = identity>
+//   requires indirectly_copyable<I, O> &&
+//            indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
+//   constexpr remove_copy_result<I, O>
+//     remove_copy(I first, S last, O result, const T& value, Proj proj = {});                      // Since C++20
+//
+// template<input_range R, weakly_incrementable O, class T, class Proj = identity>
+//   requires indirectly_copyable<iterator_t<R>, O> &&
+//            indirect_binary_predicate<ranges::equal_to,
+//                                      projected<iterator_t<R>, Proj>, const T*>
+//   constexpr remove_copy_result<borrowed_iterator_t<R>, O>
+//     remove_copy(R&& r, O result, const T& value, Proj proj = {});                                // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+struct ToPtr {
+  int* operator()(int) const;
+};
+
+template <class Iter = int*, class Sent = int*, class OutIter = int*, class Proj = std::identity>
+concept HasRemoveCopyIter =
+  requires(Iter&& iter, Sent&& sent, OutIter&& out, Proj&& proj) {
+    std::ranges::remove_copy(
+        std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<OutIter>(out), 0, std::forward<Proj>(proj));
+};
+
+static_assert(HasRemoveCopyIter<int*>);
+
+// !input_iterator<I>
+static_assert(!HasRemoveCopyIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasRemoveCopyIter<cpp20_output_iterator<int*>>);
+
+// !sentinel_for<S, I>
+static_assert(!HasRemoveCopyIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRemoveCopyIter<int*, SentinelForNotSemiregular>);
+
+// !weakly_incrementable<O>
+static_assert(!HasRemoveCopyIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// !indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
+static_assert(!HasRemoveCopyIter<int*, int*, int*, ToPtr>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasRemoveCopyIter<int*, int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasRemoveCopyIter<const int*, const int*, const int*>);
+
+template <class Range, class OutIter = int*, class Proj = std::identity>
+concept HasRemoveCopyRange =
+  requires(Range&& range, OutIter&& out, Proj&& proj) {
+    std::ranges::remove_copy(
+        std::forward<Range>(range), std::forward<OutIter>(out), 0, std::forward<Proj>(proj));
+};
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasRemoveCopyRange<R<int*>>);
+
+// !input_range<R>
+static_assert(!HasRemoveCopyRange<InputRangeNotDerivedFrom>);
+static_assert(!HasRemoveCopyRange<InputRangeNotIndirectlyReadable>);
+static_assert(!HasRemoveCopyRange<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasRemoveCopyRange<InputRangeNotSentinelSemiregular>);
+static_assert(!HasRemoveCopyRange<InputRangeNotSentinelEqualityComparableWith>);
+
+// !weakly_incrementable<O>
+static_assert(!HasRemoveCopyRange<R<int*>, WeaklyIncrementableNotMovable>);
+
+// !indirect_binary_predicate<ranges::equal_to, projected<iterator_t<I>, Proj>, const T*>
+static_assert(!HasRemoveCopyRange<R<int*>, int*, ToPtr>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasRemoveCopyRange<R<int*>, int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasRemoveCopyRange<const int*, const int*, const int*>);
+
+template <int N, int M>
+struct Data {
+  std::array<int, N> input;
+  std::array<int, M> expected;
+  int val;
+};
+
+template <class InIter, class Sent, class OutIter, int N, int M>
+constexpr void test(Data<N, M> d) {
+  using Result = std::ranges::remove_copy_result<InIter, OutIter>;
+
+  { // iterator overload
+    std::array<int, M> output;
+
+    std::same_as<Result> decltype(auto) ret = std::ranges::remove_copy(
+        InIter(d.input.data()), Sent(InIter(d.input.data() + d.input.size())), OutIter(output.data()), d.val);
+
+    assert(base(ret.in) == d.input.data() + N);
+    assert(base(ret.out) == output.data() + M);
+    assert(d.expected == output);
+  }
+
+  { // range overload
+    std::array<int, M> output;
+    auto range = std::ranges::subrange(InIter(d.input.data()), Sent(InIter(d.input.data() + d.input.size())));
+
+    std::same_as<Result> decltype(auto) ret =
+        std::ranges::remove_copy(range, OutIter(output.data()), d.val);
+
+    assert(base(ret.in) == d.input.data() + N);
+    assert(base(ret.out) == output.data() + M);
+    assert(d.expected == output);
+  }
+}
+
+template <class Iter, class Sent, class OutIter>
+constexpr void tests() {
+  // simple test
+  test<Iter, Sent, OutIter, 6, 5>({.input = {1, 2, 3, 4, 5, 6}, .expected = {1, 2, 3, 4, 6}, .val = 5});
+  // empty range
+  test<Iter, Sent, OutIter, 0, 0>({});
+  // single element range - match
+  test<Iter, Sent, OutIter, 1, 0>({.input = {1}, .expected = {}, .val = 1});
+  // single element range - no match
+  test<Iter, Sent, OutIter, 1, 1>({.input = {1}, .expected = {1}, .val = 2});
+  // two element range - same order
+  test<Iter, Sent, OutIter, 2, 1>({.input = {1, 2}, .expected = {1}, .val = 2});
+  // two element range - reversed order
+  test<Iter, Sent, OutIter, 2, 1>({.input = {1, 2}, .expected = {2}, .val = 1});
+  // all elements match
+  test<Iter, Sent, OutIter, 5, 0>({.input = {1, 1, 1, 1, 1}, .expected = {}, .val = 1});
+  // the relative order of elements isn't changed
+  test<Iter, Sent, OutIter, 8, 5>({.input = {1, 2, 3, 2, 3, 4, 2, 5}, .expected = {1, 3, 3, 4, 5}, .val = 2});
+}
+
+template <class InIter, class Sent>
+constexpr void test_output_iterators() {
+  tests<InIter, Sent, cpp17_output_iterator<int*>>();
+  tests<InIter, Sent, forward_iterator<int*>>();
+  tests<InIter, Sent, bidirectional_iterator<int*>>();
+  tests<InIter, Sent, random_access_iterator<int*>>();
+  tests<InIter, Sent, contiguous_iterator<int*>>();
+  tests<InIter, Sent, int*>();
+}
+
+template <class Iter>
+constexpr void test_sentinels() {
+  test_output_iterators<Iter, Iter>();
+  test_output_iterators<Iter, sentinel_wrapper<Iter>>();
+  test_output_iterators<Iter, sized_sentinel<Iter>>();
+}
+
+constexpr bool test() {
+  test_output_iterators<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_output_iterators<cpp17_input_iterator<int*>, sized_sentinel<cpp17_input_iterator<int*>>>();
+  test_output_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_output_iterators<cpp20_input_iterator<int*>, sized_sentinel<cpp20_input_iterator<int*>>>();
+  test_sentinels<forward_iterator<int*>>();
+  test_sentinels<bidirectional_iterator<int*>>();
+  test_sentinels<random_access_iterator<int*>>();
+  test_sentinels<contiguous_iterator<int*>>();
+  test_sentinels<int*>();
+
+  { // check that passing a different type works
+    struct S {
+      constexpr operator int() const { return 3; }
+    };
+
+    { // iterator overload
+      int a[] = {1, 2, 3, 4};
+      int b[3];
+      std::ranges::remove_copy(std::begin(a), std::end(a), std::begin(b), S{});
+    }
+
+    { // range overload
+      int a[] = {1, 2, 3, 4};
+      int b[3];
+      std::ranges::remove_copy(a, std::begin(b), S{});
+    }
+  }
+
+  { // check that a custom projection works
+    struct S {
+      constexpr operator int() const { return 3; }
+    };
+
+    { // iterator overload
+      int a[] = {1, 2, 3, 4};
+      int b[3];
+      std::ranges::remove_copy(std::begin(a), std::end(a), std::begin(b), S{});
+
+    }
+    { // range overload
+      int a[] = {1, 2, 3, 4};
+      int b[3];
+      std::ranges::remove_copy(a, std::begin(b), S{});
+    }
+  }
+
+  // Complexity: Exactly last - first applications of the corresponding predicate and any projection.
+
+  {
+    std::array in{4, 4, 5, 6};
+    std::array expected{5, 6};
+
+    // iterator overload
+    {
+      int numberOfProj = 0;
+      std::array<int, 2> out;
+      std::ranges::remove_copy(
+          in.begin(),
+          in.end(),
+          out.begin(),
+          4,
+          counting_projection(numberOfProj));
+
+      assert(numberOfProj == static_cast<int>(in.size()));
+
+      assert(std::ranges::equal(out, expected));
+    }
+
+    // range overload
+    {
+      int numberOfProj = 0;
+      std::array<int, 2> out;
+      std::ranges::remove_copy(
+          in, out.begin(), 4, counting_projection(numberOfProj));
+      assert(numberOfProj == static_cast<int>(in.size()));
+      assert(std::ranges::equal(out, expected));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges_remove_copy_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges_remove_copy_if.pass.cpp
new file mode 100644
index 0000000..c67f7c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/ranges_remove_copy_if.pass.cpp
@@ -0,0 +1,297 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O,
+//          class Proj = identity, indirect_unary_predicate<projected<I, Proj>> Pred>
+//   requires indirectly_copyable<I, O>
+//   constexpr remove_copy_if_result<I, O>
+//     remove_copy_if(I first, S last, O result, Pred pred, Proj proj = {});                        // Since C++20
+//
+// template<input_range R, weakly_incrementable O, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires indirectly_copyable<iterator_t<R>, O>
+//   constexpr remove_copy_if_result<borrowed_iterator_t<R>, O>
+//     remove_copy_if(R&& r, O result, Pred pred, Proj proj = {});                                  // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+struct AlwaysTrue {
+  constexpr bool operator()(auto&&...) const { return true; }
+};
+
+template <
+    class I,
+    class S    = sentinel_wrapper<std::decay_t<I>>,
+    class O    = int*,
+    class Pred = AlwaysTrue>
+concept HasRemoveCopyIfIter =
+  requires(I&& iter, S&& sent, O&& out, Pred&& pred) {
+    std::ranges::remove_copy_if(std::forward<I>(iter), std::forward<S>(sent),
+                                std::forward<O>(out), std::forward<Pred>(pred));
+};
+
+static_assert(HasRemoveCopyIfIter<int*, int*, int*>);
+
+// !input_iterator<I>
+static_assert(!HasRemoveCopyIfIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasRemoveCopyIfIter<cpp20_output_iterator<int*>>);
+
+// !sentinel_for<S, I>
+static_assert(!HasRemoveCopyIfIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRemoveCopyIfIter<int*, SentinelForNotSemiregular>);
+
+// !weakly_incrementable<O>
+static_assert(!HasRemoveCopyIfIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// !indirect_unary_predicate<Pred, projected<I, Proj>>
+static_assert(!HasRemoveCopyIfIter<int*, int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasRemoveCopyIfIter<int*, int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasRemoveCopyIfIter<int*, int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasRemoveCopyIfIter<const int*, const int*, const int*>);
+
+template < class R, class O = int*, class Pred = AlwaysTrue, class Proj = std::identity>
+concept HasRemoveCopyIfRange =
+    requires(R&& r, O&& out, Pred&& pred, Proj&& proj) {
+      std::ranges::remove_copy_if(
+          std::forward<R>(r), std::forward<O>(out), std::forward<Pred>(pred), std::forward<Proj>(proj));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasRemoveCopyIfRange<R<int*>>);
+
+// !input_range<R>
+static_assert(!HasRemoveCopyIfRange<R<InputIteratorNotDerivedFrom>>);
+static_assert(!HasRemoveCopyIfRange<R<cpp20_output_iterator<int*>>>);
+
+// !weakly_incrementable<O>
+static_assert(!HasRemoveCopyIfRange<R<int*>, WeaklyIncrementableNotMovable>);
+
+// !indirect_unary_predicate<Pred, projected<iterator_t<R>, Proj>>
+static_assert(!HasRemoveCopyIfRange<R<int*>, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasRemoveCopyIfRange<R<int*>, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !indirectly_copyable<iterator_t<R>, O>
+static_assert(!HasRemoveCopyIfRange<R<int*>, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasRemoveCopyIfRange<R<const int*>, const int*>);
+
+template <class InIter, class OutIter, template <class> class SentWrapper, std::size_t N1, std::size_t N2, class Pred>
+constexpr void testRemoveCopyIfImpl(std::array<int, N1> in, std::array<int, N2> expected, Pred pred) {
+  using Sent = SentWrapper<InIter>;
+  using Result = std::ranges::remove_copy_if_result<InIter, OutIter>;
+
+  // iterator overload
+  {
+    std::array<int, N2> out;
+    std::same_as<Result> decltype(auto) result =
+        std::ranges::remove_copy_if(InIter{in.data()}, Sent{InIter{in.data() + in.size()}}, OutIter{out.data()}, pred);
+    assert(std::ranges::equal(out, expected));
+    assert(base(result.in) == in.data() + in.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N2> out;
+    std::ranges::subrange r{InIter{in.data()}, Sent{InIter{in.data() + in.size()}}};
+    std::same_as<Result> decltype(auto) result =
+        std::ranges::remove_copy_if(r, OutIter{out.data()}, pred);
+    assert(std::ranges::equal(out, expected));
+    assert(base(result.in) == in.data() + in.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class InIter, class OutIter, template <class> class SentWrapper>
+constexpr void testImpl() {
+  // remove multiple elements
+  {
+    std::array in{1, 2, 3, 2, 1};
+    std::array expected{1, 3, 1};
+    auto pred = [](int i) { return i == 2; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // remove single elements
+  {
+    std::array in{1, 2, 3, 2, 1};
+    std::array expected{1, 2, 2, 1};
+    auto pred = [](int i) { return i == 3; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // nothing removed
+  {
+    std::array in{1, 2, 3, 2, 1};
+    std::array expected{1, 2, 3, 2, 1};
+    auto pred = [](int) { return false; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // all removed
+  {
+    std::array in{1, 2, 3, 2, 1};
+    std::array<int, 0> expected{};
+    auto pred = [](int) { return true; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // remove first
+  {
+    std::array in{1, 2, 3, 2};
+    std::array expected{2, 3, 2};
+    auto pred = [](int i) { return i < 2; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // remove last
+  {
+    std::array in{1, 2, 3, 2, 5};
+    std::array expected{1, 2, 3, 2};
+    auto pred = [](int i) { return i > 3; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // stable
+  {
+    std::array in{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+    std::array expected{6, 7, 8, 9, 10};
+    auto pred = [](int i) { return i < 6; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // empty range
+  {
+    std::array<int, 0> in{};
+    std::array<int, 0> expected{};
+    auto pred = [](int) { return false; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+
+  // one element range
+  {
+    std::array in{1};
+    std::array<int, 0> expected{};
+    auto pred = [](int i) { return i == 1; };
+    testRemoveCopyIfImpl<InIter, OutIter, SentWrapper>(in, expected, pred);
+  }
+}
+
+template <class OutIter, template <class> class SentWrapper>
+constexpr void withAllPermutationsOfInIter() {
+  testImpl<cpp20_input_iterator<int*>, OutIter, sentinel_wrapper>();
+  testImpl<forward_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<bidirectional_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<random_access_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<contiguous_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<int*, OutIter, SentWrapper>();
+}
+
+template <template <class> class SentWrapper>
+constexpr void withAllPermutationsOfInIterOutIter() {
+  withAllPermutationsOfInIter<cpp20_output_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfInIter<int*, SentWrapper>();
+}
+
+constexpr bool test() {
+  withAllPermutationsOfInIterOutIter<std::type_identity_t>();
+  withAllPermutationsOfInIterOutIter<sentinel_wrapper>();
+
+  // Test custom projection
+  {
+    struct Data {
+      int data;
+    };
+
+    std::array in{Data{4}, Data{8}, Data{12}, Data{12}};
+    std::array expected{Data{4}, Data{12}, Data{12}};
+
+    const auto proj = &Data::data;
+    const auto pred = [](int i) { return i == 8; };
+
+    const auto equals = [](const Data& x, const Data& y) { return x.data == y.data; };
+    // iterator overload
+    {
+      std::array<Data, 3> out;
+      auto result = std::ranges::remove_copy_if(in.begin(), in.end(), out.begin(), pred, proj);
+      assert(std::ranges::equal(out, expected, equals));
+      assert(result.in == in.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 3> out;
+      auto result = std::ranges::remove_copy_if(in, out.begin(), pred, proj);
+      assert(std::ranges::equal(out, expected, equals));
+      assert(result.in == in.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Complexity: Exactly last - first applications of the corresponding predicate and any projection.
+  {
+    std::array in{4, 4, 5, 6};
+    std::array expected{5, 6};
+
+    const auto pred = [](int i) { return i == 4; };
+
+    // iterator overload
+    {
+      int numberOfPred = 0;
+      int numberOfProj = 0;
+      std::array<int, 2> out;
+      std::ranges::remove_copy_if(
+          in.begin(), in.end(), out.begin(), counting_predicate(pred, numberOfPred), counting_projection(numberOfProj));
+
+      assert(numberOfPred == static_cast<int>(in.size()));
+      assert(numberOfProj == static_cast<int>(in.size()));
+
+      assert(std::ranges::equal(out, expected));
+    }
+
+    // range overload
+    {
+      int numberOfPred = 0;
+      int numberOfProj = 0;
+      std::array<int, 2> out;
+      std::ranges::remove_copy_if(
+          in, out.begin(), counting_predicate(pred, numberOfPred), counting_projection(numberOfProj));
+      assert(numberOfPred == static_cast<int>(in.size()));
+      assert(numberOfProj == static_cast<int>(in.size()));
+      assert(std::ranges::equal(out, expected));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove.pass.cpp
new file mode 100644
index 0000000..ebacec5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   requires OutputIterator<Iter, RvalueOf<Iter::reference>::type>
+//         && HasEqualTo<Iter::value_type, T>
+//   constexpr Iter         // constexpr after C++17
+//   remove(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 5, 6};
+
+    auto it = std::remove(std::begin(ia), std::end(ia), 5);
+
+    return (std::begin(ia) + std::size(ia) - 2) == it  // we removed two elements
+        && std::none_of(std::begin(ia), it, [](int a) {return a == 5; })
+           ;
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    Iter r = std::remove(Iter(ia), Iter(ia+sa), 2);
+    assert(base(r) == ia + sa-3);
+    assert(ia[0] == 0);
+    assert(ia[1] == 1);
+    assert(ia[2] == 3);
+    assert(ia[3] == 4);
+    assert(ia[4] == 3);
+    assert(ia[5] == 4);
+}
+
+#if TEST_STD_VER >= 11
+template <class Iter>
+void
+test1()
+{
+    const unsigned sa = 9;
+    std::unique_ptr<int> ia[sa];
+    ia[0].reset(new int(0));
+    ia[1].reset(new int(1));
+    ia[3].reset(new int(3));
+    ia[4].reset(new int(4));
+    ia[6].reset(new int(3));
+    ia[7].reset(new int(4));
+    Iter r = std::remove(Iter(ia), Iter(ia+sa), std::unique_ptr<int>());
+    assert(base(r) == ia + sa-3);
+    assert(*ia[0] == 0);
+    assert(*ia[1] == 1);
+    assert(*ia[2] == 3);
+    assert(*ia[3] == 4);
+    assert(*ia[4] == 3);
+    assert(*ia[5] == 4);
+}
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+    test1<forward_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*>();
+#endif // TEST_STD_VER >= 11
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy.pass.cpp
new file mode 100644
index 0000000..1a0313d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter, class T>
+//   requires HasEqualTo<InIter::value_type, T>
+//   constexpr OutIter         // constexpr after C++17
+//   remove_copy(InIter first, InIter last, OutIter result, const T& value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 5, 6};
+    int ib[std::size(ia)] = {0};
+
+    auto it = std::remove_copy(std::begin(ia), std::end(ia), std::begin(ib), 5);
+
+    return std::distance(std::begin(ib), it) == static_cast<int>(std::size(ia) - 2)   // we removed two elements
+        && std::none_of(std::begin(ib), it, [](int a) {return a == 5;})
+        && std::all_of (it, std::end(ib),   [](int a) {return a == 0;})
+           ;
+    }
+#endif
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[sa];
+    OutIter r = std::remove_copy(InIter(ia), InIter(ia+sa), OutIter(ib), 2);
+    assert(base(r) == ib + sa-3);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+    assert(ib[2] == 3);
+    assert(ib[3] == 4);
+    assert(ib[4] == 3);
+    assert(ib[5] == 4);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy_if.pass.cpp
new file mode 100644
index 0000000..d2ad3f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_copy_if.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, OutputIterator<auto, InIter::reference> OutIter,
+//          Predicate<auto, InIter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr OutIter         // constexpr after C++17
+//   remove_copy_if(InIter first, InIter last, OutIter result, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; }
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 5, 6};
+    int ib[std::size(ia)] = {0};
+
+    auto it = std::remove_copy_if(std::begin(ia), std::end(ia), std::begin(ib), equalToTwo);
+
+    return std::distance(std::begin(ib), it) == static_cast<int>(std::size(ia) - 1)   // we removed one element
+        && std::none_of(std::begin(ib), it, equalToTwo)
+        && std::all_of (it, std::end(ib), [](int a) {return a == 0;})
+           ;
+    }
+#endif
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[sa];
+    OutIter r = std::remove_copy_if(InIter(ia), InIter(ia+sa),
+                                    OutIter(ib), equalToTwo);
+    assert(base(r) == ib + sa-3);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+    assert(ib[2] == 3);
+    assert(ib[3] == 4);
+    assert(ib[4] == 3);
+    assert(ib[5] == 4);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_if.pass.cpp
new file mode 100644
index 0000000..99f9adf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.remove/remove_if.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires OutputIterator<Iter, RvalueOf<Iter::reference>::type>
+//         && CopyConstructible<Pred>
+//   constexpr Iter         // constexpr after C++17
+//   remove_if(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "counting_predicates.h"
+
+TEST_CONSTEXPR bool equal2 ( int i ) { return i == 2; }
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 5, 6};
+
+    auto it = std::remove_if(std::begin(ia), std::end(ia), equal2);
+
+    return (std::begin(ia) + std::size(ia) - 1) == it  // we removed one element
+        && std::none_of(std::begin(ia), it, equal2)
+           ;
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+//     int* r = std::remove_if(ia, ia+sa, std::bind2nd(std::equal_to<int>(), 2));
+    unary_counting_predicate<bool(*)(int), int> cp(equal2);
+    int* r = std::remove_if(ia, ia+sa, std::ref(cp));
+    assert(r == ia + sa-3);
+    assert(ia[0] == 0);
+    assert(ia[1] == 1);
+    assert(ia[2] == 3);
+    assert(ia[3] == 4);
+    assert(ia[4] == 3);
+    assert(ia[5] == 4);
+    assert(cp.count() == sa);
+}
+
+#if TEST_STD_VER >= 11
+struct pred
+{
+    bool operator()(const std::unique_ptr<int>& i) {return *i == 2;}
+};
+
+template <class Iter>
+void
+test1()
+{
+    const unsigned sa = 9;
+    std::unique_ptr<int> ia[sa];
+    ia[0].reset(new int(0));
+    ia[1].reset(new int(1));
+    ia[2].reset(new int(2));
+    ia[3].reset(new int(3));
+    ia[4].reset(new int(4));
+    ia[5].reset(new int(2));
+    ia[6].reset(new int(3));
+    ia[7].reset(new int(4));
+    ia[8].reset(new int(2));
+    Iter r = std::remove_if(Iter(ia), Iter(ia+sa), pred());
+    assert(base(r) == ia + sa-3);
+    assert(*ia[0] == 0);
+    assert(*ia[1] == 1);
+    assert(*ia[2] == 3);
+    assert(*ia[3] == 4);
+    assert(*ia[4] == 3);
+    assert(*ia[5] == 4);
+}
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+    test1<forward_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*>();
+#endif // TEST_STD_VER >= 11
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges.replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges.replace.pass.cpp
new file mode 100644
index 0000000..92ba59c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges.replace.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class T1, class T2, class Proj = identity>
+//   requires indirectly_writable<I, const T2&> &&
+//            indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T1*>
+//   constexpr I
+//     ranges::replace(I first, S last, const T1& old_value, const T2& new_value, Proj proj = {});
+// template<input_range R, class T1, class T2, class Proj = identity>
+//   requires indirectly_writable<iterator_t<R>, const T2&> &&
+//            indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T1*>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::replace(R&& r, const T1& old_value, const T2& new_value, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasReplaceIt = requires(Iter iter, Sent sent) { std::ranges::replace(iter, sent, 0, 0); };
+
+static_assert(HasReplaceIt<int*>);
+static_assert(!HasReplaceIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasReplaceIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasReplaceIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasReplaceIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasReplaceIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasReplaceIt<int**>); // not indirectly_writable
+static_assert(!HasReplaceIt<IndirectBinaryPredicateNotIndirectlyReadable>);
+
+template <class Range>
+concept HasReplaceR = requires(Range range) { std::ranges::replace(range, 0, 0); };
+
+static_assert(HasReplaceR<UncheckedRange<int*>>);
+static_assert(!HasReplaceR<InputRangeNotDerivedFrom>);
+static_assert(!HasReplaceR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasReplaceR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasReplaceR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasReplaceR<InputRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasReplaceR<UncheckedRange<int**>>); // not indirectly_writable
+static_assert(!HasReplaceR<InputRangeIndirectBinaryPredicateNotIndirectlyReadable>);
+
+template <int N>
+struct Data {
+  std::array<int, N> input;
+  int oldval;
+  int newval;
+  std::array<int, N> expected;
+};
+
+template <class Iter, class Sent, int N>
+constexpr void test(Data<N> d) {
+  {
+    auto a = d.input;
+    std::same_as<Iter> decltype(auto) ret = std::ranges::replace(Iter(a.data()), Sent(Iter(a.data() + N)),
+                                                                 d.oldval,
+                                                                 d.newval);
+    assert(base(ret) == a.data() + N);
+    assert(a == d.expected);
+  }
+  {
+    auto a = d.input;
+    auto range = std::ranges::subrange(Iter(a.data()), Sent(Iter(a.data() + N)));
+    std::same_as<Iter> decltype(auto) ret = std::ranges::replace(range, d.oldval, d.newval);
+    assert(base(ret) == a.data() + N);
+    assert(a == d.expected);
+  }
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter, Sent, 4>({.input = {1, 2, 3, 4}, .oldval = 2, .newval = 23, .expected = {1, 23, 3, 4}});
+  // no match
+  test<Iter, Sent, 4>({.input = {1, 2, 3, 4}, .oldval = 5, .newval = 23, .expected = {1, 2, 3, 4}});
+  // all match
+  test<Iter, Sent, 4>({.input = {1, 1, 1, 1}, .oldval = 1, .newval = 23, .expected = {23, 23, 23, 23}});
+  // empty range
+  test<Iter, Sent, 0>({.input = {}, .oldval = 1, .newval = 23, .expected = {}});
+  // single element range
+  test<Iter, Sent, 1>({.input = {1}, .oldval = 1, .newval = 2, .expected = {2}});
+}
+
+constexpr bool test() {
+  test_iterators<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that the projection is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      int i;
+    };
+    {
+      S a[] = {1, 2, 3, 4};
+      std::ranges::replace(a, a + 4, 3, S{0}, &S::i);
+    }
+    {
+      S a[] = {1, 2, 3, 4};
+      std::ranges::replace(a, 3, S{0}, &S::i);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      constexpr bool operator==(const S&) const = default;
+      constexpr const S& identity() const { return *this; }
+      int i;
+    };
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::replace(std::begin(a), std::end(a), S{1}, S{2}, &S::identity);
+      assert(ret == a + 4);
+    }
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::replace(a, S{1}, S{2}, &S::identity);
+      assert(ret == a + 4);
+    }
+  }
+
+  { // check that the implicit conversion to bool works
+    {
+      StrictComparable<int> a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::replace(std::begin(a), std::end(a), 1, 2);
+      assert(ret == std::end(a));
+    }
+    {
+      StrictComparable<int> a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::replace(a, 1, 2);
+      assert(ret == std::end(a));
+    }
+  }
+
+  { // check that T1 and T2 can be different types
+    {
+      StrictComparable<int> a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::replace(std::begin(a), std::end(a), '\0', 2ull);
+      assert(ret == std::end(a));
+    }
+    {
+      StrictComparable<int> a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::replace(a, '\0', 2ull);
+      assert(ret == std::end(a));
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::replace(std::array {1, 2, 3, 4}, 1, 1);
+  }
+
+  { // check that the complexity requirements are met
+    {
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::replace(std::begin(a), std::end(a), 1, 2, proj);
+      assert(ret == a + 5);
+      assert(projectionCount == 5);
+    }
+    {
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::replace(a, 1, 2, proj);
+      assert(ret == a + 5);
+      assert(projectionCount == 5);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges.replace_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges.replace_if.pass.cpp
new file mode 100644
index 0000000..67e5e87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges.replace_if.pass.cpp
@@ -0,0 +1,187 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class T, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   requires indirectly_writable<I, const T&>
+//   constexpr I ranges::replace_if(I first, S last, Pred pred, const T& new_value, Proj proj = {});
+// template<input_range R, class T, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires indirectly_writable<iterator_t<R>, const T&>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::replace_if(R&& r, Pred pred, const T& new_value, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+struct FalsePredicate {
+  bool operator()(auto&&) { return false; }
+};
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasReplaceIt = requires(Iter iter, Sent sent) { std::ranges::replace_if(iter, sent, FalsePredicate{}, 0); };
+
+static_assert(HasReplaceIt<int*>);
+static_assert(!HasReplaceIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasReplaceIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasReplaceIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasReplaceIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasReplaceIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasReplaceIt<int**>); // not indirectly_writable
+static_assert(!HasReplaceIt<IndirectBinaryPredicateNotIndirectlyReadable>);
+
+template <class Range>
+concept HasReplaceR = requires(Range range) { std::ranges::replace_if(range, FalsePredicate{}, 0); };
+
+static_assert(HasReplaceR<UncheckedRange<int*>>);
+static_assert(!HasReplaceR<InputRangeNotDerivedFrom>);
+static_assert(!HasReplaceR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasReplaceR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasReplaceR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasReplaceR<InputRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasReplaceR<UncheckedRange<int**>>); // not indirectly_writable
+static_assert(!HasReplaceR<InputRangeIndirectBinaryPredicateNotIndirectlyReadable>);
+
+template <class Iter, class Sent, int N, class Pred>
+constexpr void test(std::array<int, N> a_, Pred pred, int val, std::array<int, N> expected) {
+  {
+    auto a = a_;
+    std::same_as<Iter> auto ret = std::ranges::replace_if(Iter(a.data()), Sent(Iter(a.data() + N)),
+                                                          pred,
+                                                          val);
+    assert(base(ret) == a.data() + N);
+    assert(a == expected);
+  }
+  {
+    auto a = a_;
+    auto range = std::ranges::subrange(Iter(a.data()), Sent(Iter(a.data() + N)));
+    std::same_as<Iter> auto ret = std::ranges::replace_if(range, pred, val);
+    assert(base(ret) == a.data() + N);
+    assert(a == expected);
+  }
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter, Sent, 4>({1, 2, 3, 4}, [](int i) { return i < 3; }, 23, {23, 23, 3, 4});
+  // no match
+  test<Iter, Sent, 4>({1, 2, 3, 4}, [](int i) { return i < 0; }, 23, {1, 2, 3, 4});
+  // all match
+  test<Iter, Sent, 4>({1, 2, 3, 4}, [](int i) { return i > 0; }, 23, {23, 23, 23, 23});
+  // empty range
+  test<Iter, Sent, 0>({}, [](int i) { return i > 0; }, 23, {});
+  // single element range
+  test<Iter, Sent, 1>({1}, [](int i) { return i > 0; }, 2, {2});
+}
+
+constexpr bool test() {
+  test_iterators<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that the projection is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      int i;
+    };
+    {
+      S a[] = {1, 2, 3, 4};
+      std::ranges::replace_if(a, a + 4, [](int i) { return i == 3; }, S{0}, &S::i);
+    }
+    {
+      S a[] = {1, 2, 3, 4};
+      std::ranges::replace_if(a, [](int i) { return i == 3; }, S{0}, &S::i);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      constexpr bool check() const { return false; }
+      constexpr const S& identity() const { return *this; }
+      int i;
+    };
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::replace_if(std::begin(a), std::end(a), &S::check, S{2}, &S::identity);
+      assert(ret == std::end(a));
+    }
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::replace_if(a, &S::check, S{2}, &S::identity);
+      assert(ret == std::end(a));
+    }
+  }
+
+  { // check that the implicit conversion to bool works
+    {
+      int a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::replace_if(std::begin(a), std::end(a), [](int) { return BooleanTestable{false}; }, 2);
+      assert(ret == std::end(a));
+    }
+    {
+      int a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::replace_if(a, [](int) { return BooleanTestable{false}; }, 2);
+      assert(ret == std::end(a));
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::replace_if(std::array {1, 2, 3, 4}, [](int) { return false; }, 1);
+  }
+
+  { // check that the complexity requirements are met
+    {
+      int predicateCount = 0;
+      auto pred = [&](int) { ++predicateCount; return false; };
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::replace_if(a, a + 5, pred, 1, proj);
+      assert(ret == a + 5);
+      assert(predicateCount == 5);
+      assert(projectionCount == 5);
+    }
+    {
+      int predicateCount = 0;
+      auto pred = [&](int) { ++predicateCount; return false; };
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::replace_if(a, pred, 1, proj);
+      assert(ret == a + 5);
+      assert(predicateCount == 5);
+      assert(projectionCount == 5);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges_replace_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges_replace_copy.pass.cpp
new file mode 100644
index 0000000..b1c03e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges_replace_copy.pass.cpp
@@ -0,0 +1,254 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class T1, class T2,
+//          output_iterator<const T2&> O, class Proj = identity>
+//   requires indirectly_copyable<I, O> &&
+//            indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T1*>
+//   constexpr replace_copy_result<I, O>
+//     replace_copy(I first, S last, O result, const T1& old_value, const T2& new_value,
+//                  Proj proj = {});                                                                // Since C++20
+//
+// template<input_range R, class T1, class T2, output_iterator<const T2&> O,
+//          class Proj = identity>
+//   requires indirectly_copyable<iterator_t<R>, O> &&
+//            indirect_binary_predicate<ranges::equal_to,
+//                                      projected<iterator_t<R>, Proj>, const T1*>
+//   constexpr replace_copy_result<borrowed_iterator_t<R>, O>
+//     replace_copy(R&& r, O result, const T1& old_value, const T2& new_value,
+//                  Proj proj = {});                                                                // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class OutIter = int*>
+concept HasReplaceCopyIter =
+  requires(Iter&& first, Sent&& last, OutIter&& result) {
+    std::ranges::replace_copy(
+        std::forward<Iter>(first), std::forward<Sent>(last), std::forward<OutIter>(result), 0, 0);
+};
+
+static_assert(HasReplaceCopyIter<int*>);
+
+// !input_iterator<I>
+static_assert(!HasReplaceCopyIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasReplaceCopyIter<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasReplaceCopyIter<InputIteratorNotInputOrOutputIterator>);
+
+// !sentinel_for<S, I>
+static_assert(!HasReplaceCopyIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasReplaceCopyIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !output_iterator<O, const T2&>
+static_assert(!HasReplaceCopyIter<int*, int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasReplaceCopyIter<int*, int*, OutputIteratorNotInputOrOutputIterator>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasReplaceCopyIter<int*, int*, int**>);
+
+// !indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T1*>
+static_assert(!HasReplaceCopyIter<IndirectBinaryPredicateNotIndirectlyReadable>);
+
+template <class Range, class OutIter = int*>
+concept HasReplaceCopyRange = requires(Range&& range, OutIter&& result) {
+  std::ranges::replace_copy(std::forward<Range>(range), std::forward<OutIter>(result), 0, 0);
+};
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasReplaceCopyRange<R<int*>>);
+
+// !input_range<R>
+static_assert(!HasReplaceCopyRange<InputRangeNotDerivedFrom>);
+static_assert(!HasReplaceCopyRange<InputRangeNotIndirectlyReadable>);
+static_assert(!HasReplaceCopyRange<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasReplaceCopyRange<InputRangeNotSentinelSemiregular>);
+static_assert(!HasReplaceCopyRange<InputRangeNotSentinelEqualityComparableWith>);
+
+// !output_iterator<O, const T2&>
+static_assert(!HasReplaceCopyRange<R<int*>, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasReplaceCopyRange<R<int*>, OutputIteratorNotInputOrOutputIterator>);
+
+// !indirectly_copyable<iterator_t<R>, O>
+static_assert(!HasReplaceCopyRange<R<int*>, R<int**>>);
+
+// !indirect_binary_predicate<ranges::equal_to, projected<iterator_t<T>, Proj>, const T1*>
+static_assert(!HasReplaceCopyRange<R<IndirectBinaryPredicateNotIndirectlyReadable>>);
+
+template <int N>
+struct Data {
+  std::array<int, N> input;
+  int old_value;
+  int new_value;
+  std::array<int, N> expected;
+};
+
+template <class InIter, class Sent, class OutIter, int N>
+constexpr void test(Data<N> d) {
+  { // iterator overload
+    std::array<int, N> output;
+
+    auto first  = InIter(d.input.data());
+    auto last   = Sent(InIter(d.input.data() + d.input.size()));
+    auto result = OutIter(output.data());
+
+    std::same_as<std::ranges::replace_copy_result<InIter, OutIter>> decltype(auto) ret =
+        std::ranges::replace_copy(std::move(first), std::move(last), std::move(result), d.old_value, d.new_value);
+    assert(base(ret.in) == d.input.data() + d.input.size());
+    assert(base(ret.out) == output.data() + output.size());
+    assert(d.expected == output);
+  }
+
+  { // range overload
+    std::array<int, N> output;
+
+    auto range  = std::ranges::subrange(InIter(d.input.data()), Sent(InIter(d.input.data() + d.input.size())));
+    auto result = OutIter(output.data());
+
+    std::same_as<std::ranges::replace_copy_result<InIter, OutIter>> decltype(auto) ret =
+        std::ranges::replace_copy(range, result, d.old_value, d.new_value);
+    assert(base(ret.in) == d.input.data() + d.input.size());
+    assert(base(ret.out) == output.data() + output.size());
+    assert(d.expected == output);
+  }
+}
+
+template <class InIter, class Sent, class OutIter>
+constexpr void tests() {
+  // simple test
+  test<InIter, Sent, OutIter, 4>({.input = {1, 2, 3, 4}, .old_value = 2, .new_value = 5, .expected = {1, 5, 3, 4}});
+  // empty range
+  test<InIter, Sent, OutIter, 0>({.input = {}, .old_value = 2, .new_value = 5, .expected = {}});
+  // all elements match
+  test<InIter, Sent, OutIter, 4>({.input = {1, 1, 1, 1}, .old_value = 1, .new_value = 2, .expected = {2, 2, 2, 2}});
+  // no element matches
+  test<InIter, Sent, OutIter, 4>({.input = {1, 1, 1, 1}, .old_value = 2, .new_value = 3, .expected = {1, 1, 1, 1}});
+  // old_value and new_value are identical - match
+  test<InIter, Sent, OutIter, 4>({.input = {1, 1, 1, 1}, .old_value = 1, .new_value = 1, .expected = {1, 1, 1, 1}});
+  // old_value and new_value are identical - no match
+  test<InIter, Sent, OutIter, 4>({.input = {1, 1, 1, 1}, .old_value = 2, .new_value = 2, .expected = {1, 1, 1, 1}});
+  // more elements
+  test<InIter, Sent, OutIter, 7>(
+      {.input = {1, 2, 3, 4, 5, 6, 7}, .old_value = 2, .new_value = 3, .expected = {1, 3, 3, 4, 5, 6, 7}});
+  // single element - match
+  test<InIter, Sent, OutIter, 1>({.input = {1}, .old_value = 1, .new_value = 5, .expected = {5}});
+  // single element - no match
+  test<InIter, Sent, OutIter, 1>({.input = {2}, .old_value = 1, .new_value = 5, .expected = {2}});
+}
+
+template <class InIter, class Sent>
+constexpr void test_output_iterators() {
+  tests<InIter, Sent, cpp17_output_iterator<int*>>();
+  tests<InIter, Sent, forward_iterator<int*>>();
+  tests<InIter, Sent, bidirectional_iterator<int*>>();
+  tests<InIter, Sent, random_access_iterator<int*>>();
+  tests<InIter, Sent, contiguous_iterator<int*>>();
+  tests<InIter, Sent, int*>();
+}
+
+template <class InIter>
+constexpr void test_sentinels() {
+  test_output_iterators<InIter, InIter>();
+  test_output_iterators<InIter, sentinel_wrapper<InIter>>();
+  test_output_iterators<InIter, sized_sentinel<InIter>>();
+}
+
+constexpr bool test() {
+  test_output_iterators<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_output_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_sentinels<forward_iterator<int*>>();
+  test_sentinels<bidirectional_iterator<int*>>();
+  test_sentinels<random_access_iterator<int*>>();
+  test_sentinels<contiguous_iterator<int*>>();
+  test_sentinels<int*>();
+  test_sentinels<const int*>();
+
+  { // check that a custom projection works
+    struct S {
+      int i;
+    };
+
+    { // iterator overload
+      S a[] = {{1}, {2}, {3}, {4}};
+      S b[4];
+      auto ret = std::ranges::replace_copy(std::begin(a), std::end(a), std::begin(b), 1, S{2}, &S::i);
+      assert(ret.in == std::end(a));
+      assert(ret.out == std::end(b));
+    }
+
+    { // range overload
+      S a[] = {{1}, {2}, {3}, {4}};
+      S b[4];
+      auto ret = std::ranges::replace_copy(a, std::begin(b), 1, S{2}, &S::i);
+      assert(ret.in == std::end(a));
+      assert(ret.out == std::end(b));
+    }
+  }
+
+  {   // Complexity: exactly `last - first` applications of the corresponding predicate and any projection.
+    { // iterator overload
+      int proj_count = 0;
+      int a[] = {1, 2, 3, 4};
+      int b[4];
+      std::ranges::replace_copy(
+          std::begin(a), std::end(a), std::begin(b), 0, 0, counting_projection(proj_count));
+      assert(proj_count == 4);
+    }
+
+    { // range overload
+      int proj_count = 0;
+      int a[] = {1, 2, 3, 4};
+      int b[4];
+      std::ranges::replace_copy(a, std::begin(b), 0, 0, counting_projection(proj_count));
+      assert(proj_count == 4);
+    }
+  }
+
+  { // using different types for the old and new values works
+    struct S {
+      constexpr operator int() const { return 0; }
+      constexpr bool operator==(const S&) const = default;
+      constexpr bool operator==(int i) const { return i == 0; }
+    };
+    struct T {
+      constexpr operator int() const { return 1; }
+    };
+    {
+      int a[] = {0, 1, 2, 3};
+      int b[4];
+      std::ranges::replace_copy(std::begin(a), std::end(a), std::begin(b), S{}, T{});
+      assert(std::ranges::equal(b, std::array{1, 1, 2, 3}));
+    }
+    {
+      int a[] = {0, 1, 2, 3};
+      int b[4];
+      std::ranges::replace_copy(a, std::begin(b), S{}, T{});
+      assert(std::ranges::equal(b, std::array{1, 1, 2, 3}));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges_replace_copy_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges_replace_copy_if.pass.cpp
new file mode 100644
index 0000000..38f6d47
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/ranges_replace_copy_if.pass.cpp
@@ -0,0 +1,264 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, class T, output_iterator<const T&> O,
+//          class Proj = identity, indirect_unary_predicate<projected<I, Proj>> Pred>
+//   requires indirectly_copyable<I, O>
+//   constexpr replace_copy_if_result<I, O>
+//     replace_copy_if(I first, S last, O result, Pred pred, const T& new_value,
+//                     Proj proj = {});                                                             // Since C++20
+//
+// template<input_range R, class T, output_iterator<const T&> O, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   requires indirectly_copyable<iterator_t<R>, O>
+//   constexpr replace_copy_if_result<borrowed_iterator_t<R>, O>
+//     replace_copy_if(R&& r, O result, Pred pred, const T& new_value,
+//                     Proj proj = {});                                                             // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+struct FalsePredicate {
+  constexpr bool operator()(int) { return false; }
+};
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class OutIter = int*>
+concept HasReplaceCopyIfIter = requires(Iter&& first, Sent&& last, OutIter&& result) {
+  std::ranges::replace_copy_if(
+      std::forward<Iter>(first), std::forward<Sent>(last), std::forward<OutIter>(result), FalsePredicate{}, 0);
+};
+
+static_assert(HasReplaceCopyIfIter<int*>);
+
+// !input_iterator<I>
+static_assert(!HasReplaceCopyIfIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasReplaceCopyIfIter<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasReplaceCopyIfIter<InputIteratorNotInputOrOutputIterator>);
+
+// !sentinel_for<S, I>
+static_assert(!HasReplaceCopyIfIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasReplaceCopyIfIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !output_iterator<O, const T2&>
+static_assert(!HasReplaceCopyIfIter<int*, int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasReplaceCopyIfIter<int*, int*, OutputIteratorNotInputOrOutputIterator>);
+
+// !indirect_unary_predicate<Pred, projected<I, Proj>> Pred>
+static_assert(!HasReplaceCopyIfIter<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasReplaceCopyIfIter<IndirectUnaryPredicateNotPredicate>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasReplaceCopyIfIter<int*, int*, int**>);
+
+template <class Range, class OutIter = int*>
+concept HasReplaceCopyIfRange = requires(Range&& range, OutIter&& result) {
+  std::ranges::replace_copy_if(std::forward<Range>(range), std::forward<OutIter>(result), FalsePredicate{}, 0);
+};
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasReplaceCopyIfRange<R<int*>>);
+
+// !input_range<R>
+static_assert(!HasReplaceCopyIfRange<InputRangeNotDerivedFrom>);
+static_assert(!HasReplaceCopyIfRange<InputRangeNotIndirectlyReadable>);
+static_assert(!HasReplaceCopyIfRange<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasReplaceCopyIfRange<InputRangeNotSentinelSemiregular>);
+static_assert(!HasReplaceCopyIfRange<InputRangeNotSentinelEqualityComparableWith>);
+
+// !output_iterator<O, const T2&>
+static_assert(!HasReplaceCopyIfRange<R<int*>, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasReplaceCopyIfRange<R<int*>, OutputIteratorNotInputOrOutputIterator>);
+
+// !indirect_unary_predicate<Pred, projected<iterator_t<R>, Proj>> Pred>
+static_assert(!HasReplaceCopyIfRange<R<IndirectUnaryPredicateNotPredicate>>);
+
+// !indirectly_copyable<iterator_t<R>, O>
+static_assert(!HasReplaceCopyIfRange<R<int*>, int**>);
+
+template <int N>
+struct Data {
+  std::array<int, N> input;
+  int cutoff;
+  int new_value;
+  std::array<int, N> expected;
+};
+
+template <class InIter, class Sent, class OutIter, int N>
+constexpr void test(Data<N> d) {
+  { // iterator overload
+    std::array<int, N> output;
+
+    auto first  = InIter(d.input.data());
+    auto last   = Sent(InIter(d.input.data() + d.input.size()));
+    auto result = OutIter(output.data());
+
+    auto pred = [&](int i) { return i < d.cutoff; };
+
+    std::same_as<std::ranges::replace_copy_if_result<InIter, OutIter>> decltype(auto) ret =
+        std::ranges::replace_copy_if(std::move(first), std::move(last), std::move(result), pred, d.new_value);
+    assert(base(ret.in) == d.input.data() + d.input.size());
+    assert(base(ret.out) == output.data() + output.size());
+    assert(d.expected == output);
+  }
+
+  { // range overload
+    std::array<int, N> output;
+
+    auto range  = std::ranges::subrange(InIter(d.input.data()), Sent(InIter(d.input.data() + d.input.size())));
+    auto result = OutIter(output.data());
+
+    auto pred = [&](int i) { return i < d.cutoff; };
+
+    std::same_as<std::ranges::replace_copy_if_result<InIter, OutIter>> decltype(auto) ret =
+        std::ranges::replace_copy_if(range, result, pred, d.new_value);
+    assert(base(ret.in) == d.input.data() + d.input.size());
+    assert(base(ret.out) == output.data() + output.size());
+    assert(d.expected == output);
+  }
+}
+
+template <class InIter, class Sent, class OutIter>
+constexpr void tests() {
+  // simple test
+  test<InIter, Sent, OutIter, 4>({.input = {1, 2, 3, 4}, .cutoff = 2, .new_value = 5, .expected = {5, 2, 3, 4}});
+  // empty range
+  test<InIter, Sent, OutIter, 0>({.input = {}, .cutoff = 2, .new_value = 5, .expected = {}});
+  // all elements match
+  test<InIter, Sent, OutIter, 4>({.input = {1, 1, 1, 1}, .cutoff = 2, .new_value = 2, .expected = {2, 2, 2, 2}});
+  // no element matches
+  test<InIter, Sent, OutIter, 4>({.input = {1, 1, 1, 1}, .cutoff = 1, .new_value = 3, .expected = {1, 1, 1, 1}});
+  // more elements
+  test<InIter, Sent, OutIter, 7>(
+      {.input = {1, 2, 3, 4, 5, 6, 7}, .cutoff = 3, .new_value = 3, .expected = {3, 3, 3, 4, 5, 6, 7}});
+  // single element - match
+  test<InIter, Sent, OutIter, 1>({.input = {1}, .cutoff = 2, .new_value = 5, .expected = {5}});
+  // single element - no match
+  test<InIter, Sent, OutIter, 1>({.input = {2}, .cutoff = 2, .new_value = 5, .expected = {2}});
+}
+
+template <class InIter, class Sent>
+constexpr void test_output_iterators() {
+  tests<InIter, Sent, cpp17_output_iterator<int*>>();
+  tests<InIter, Sent, forward_iterator<int*>>();
+  tests<InIter, Sent, bidirectional_iterator<int*>>();
+  tests<InIter, Sent, random_access_iterator<int*>>();
+  tests<InIter, Sent, contiguous_iterator<int*>>();
+  tests<InIter, Sent, int*>();
+}
+
+template <class InIter>
+constexpr void test_sentinels() {
+  test_output_iterators<InIter, InIter>();
+  test_output_iterators<InIter, sentinel_wrapper<InIter>>();
+  test_output_iterators<InIter, sized_sentinel<InIter>>();
+}
+
+constexpr bool test() {
+  test_output_iterators<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_output_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_sentinels<forward_iterator<int*>>();
+  test_sentinels<bidirectional_iterator<int*>>();
+  test_sentinels<random_access_iterator<int*>>();
+  test_sentinels<contiguous_iterator<int*>>();
+  test_sentinels<int*>();
+  test_sentinels<const int*>();
+
+  { // check that a custom projection works
+    struct S {
+      int i;
+    };
+
+    { // iterator overload
+      S a[] = {{1}, {2}, {3}, {4}};
+      S b[4];
+      auto ret = std::ranges::replace_copy_if(std::begin(a), std::end(a), std::begin(b), FalsePredicate{}, S{2}, &S::i);
+      assert(ret.in == std::end(a));
+      assert(ret.out == std::end(b));
+      assert(std::ranges::equal(a, b, {}, &S::i, &S::i));
+    }
+
+    { // range overload
+      S a[] = {{1}, {2}, {3}, {4}};
+      S b[4];
+      auto ret = std::ranges::replace_copy_if(a, std::begin(b), FalsePredicate{}, S{2}, &S::i);
+      assert(ret.in == std::end(a));
+      assert(ret.out == std::end(b));
+      assert(std::ranges::equal(a, b, {}, &S::i, &S::i));
+    }
+  }
+
+  {   // Complexity: exactly `last - first` applications of the corresponding predicate and any projection.
+    { // iterator overload
+      int pred_count = 0;
+      int proj_count = 0;
+      int a[] = {1, 2, 3, 4};
+      int b[4];
+
+      std::ranges::replace_copy_if(
+          std::begin(a), std::end(a), std::begin(b),
+          counting_predicate(FalsePredicate{}, pred_count), 0, counting_projection(proj_count));
+      assert(pred_count == 4);
+      assert(proj_count == 4);
+    }
+
+    { // range overload
+      int pred_count = 0;
+      int proj_count = 0;
+      int a[] = {1, 2, 3, 4};
+      int b[4];
+
+      std::ranges::replace_copy_if(a, std::begin(b),
+          counting_predicate(FalsePredicate{}, pred_count), 0, counting_projection(proj_count));
+      assert(pred_count == 4);
+      assert(proj_count == 4);
+    }
+  }
+
+  { // using different types for the old and new values works
+    struct S {
+      constexpr operator int() const { return 1; }
+    };
+    {
+      int a[] = {0, 0, 2, 3};
+      int b[4];
+      std::ranges::replace_copy_if(std::begin(a), std::end(a), std::begin(b), [](int i) { return i < 2; }, S{});
+      assert(std::ranges::equal(b, std::array{1, 1, 2, 3}));
+    }
+
+    {
+      int a[] = {0, 0, 2, 3};
+      int b[4];
+      std::ranges::replace_copy_if(a, std::begin(b), [](int i) { return i < 2; }, S{});
+      assert(std::ranges::equal(b, std::array{1, 1, 2, 3}));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace.pass.cpp
new file mode 100644
index 0000000..1e91fc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   requires OutputIterator<Iter, Iter::reference>
+//         && OutputIterator<Iter, const T&>
+//         && HasEqualTo<Iter::value_type, T>
+//   constexpr void      // constexpr after C++17
+//   replace(Iter first, Iter last, const T& old_value, const T& new_value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+          int ia[]       = {0, 1, 2, 3, 4};
+    const int expected[] = {0, 1, 5, 3, 4};
+
+    std::replace(std::begin(ia), std::end(ia), 2, 5);
+    return std::equal(std::begin(ia), std::end(ia), std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    std::replace(Iter(ia), Iter(ia+sa), 2, 5);
+    assert(ia[0] == 0);
+    assert(ia[1] == 1);
+    assert(ia[2] == 5);
+    assert(ia[3] == 3);
+    assert(ia[4] == 4);
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy.pass.cpp
new file mode 100644
index 0000000..00f8698
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, typename OutIter, class T>
+//   requires OutputIterator<OutIter, InIter::reference>
+//         && OutputIterator<OutIter, const T&>
+//         && HasEqualTo<InIter::value_type, T>
+//   constexpr OutIter      // constexpr after C++17
+//   replace_copy(InIter first, InIter last, OutIter result, const T& old_value,
+//                                                           const T& new_value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 3, 4};
+    int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger
+    const int expected[] = {0, 1, 5, 3, 4};
+
+    auto it = std::replace_copy(std::begin(ia), std::end(ia), std::begin(ib), 2, 5);
+
+    return it == (std::begin(ib) + std::size(ia))
+        && *it == 0 // don't overwrite the last value in the output array
+        && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[sa] = {0};
+    OutIter r = std::replace_copy(InIter(ia), InIter(ia+sa), OutIter(ib), 2, 5);
+    assert(base(r) == ib + sa);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+    assert(ib[2] == 5);
+    assert(ib[3] == 3);
+    assert(ib[4] == 4);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy_if.pass.cpp
new file mode 100644
index 0000000..795181b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_copy_if.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, typename OutIter,
+//          Predicate<auto, InIter::value_type> Pred, class T>
+//   requires OutputIterator<OutIter, InIter::reference>
+//         && OutputIterator<OutIter, const T&>
+//         && CopyConstructible<Pred>
+//   constexpr OutIter      // constexpr after C++17
+//   replace_copy_if(InIter first, InIter last, OutIter result, Pred pred, const T& new_value);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; }
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 3, 4};
+    int ib[] = {0, 0, 0, 0, 0, 0}; // one bigger
+    const int expected[] = {0, 1, 5, 3, 4};
+
+    auto it = std::replace_copy_if(std::begin(ia), std::end(ia), std::begin(ib), equalToTwo, 5);
+
+    return it == (std::begin(ib) + std::size(ia))
+        && *it == 0 // don't overwrite the last value in the output array
+        && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[sa] = {0};
+    OutIter r = std::replace_copy_if(InIter(ia), InIter(ia+sa),
+                                     OutIter(ib), equalToTwo, 5);
+    assert(base(r) == ib + sa);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+    assert(ib[2] == 5);
+    assert(ib[3] == 3);
+    assert(ib[4] == 4);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_if.pass.cpp
new file mode 100644
index 0000000..4f32b6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.replace/replace_if.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, Predicate<auto, Iter::value_type> Pred, class T>
+//   requires OutputIterator<Iter, Iter::reference>
+//         && OutputIterator<Iter, const T&>
+//         && CopyConstructible<Pred>
+//   constexpr void      // constexpr after C++17
+//   replace_if(Iter first, Iter last, Pred pred, const T& new_value);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; }
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+          int ia[]       = {0, 1, 2, 3, 4};
+    const int expected[] = {0, 1, 5, 3, 4};
+
+    std::replace_if(std::begin(ia), std::end(ia), equalToTwo, 5);
+    return std::equal(std::begin(ia), std::end(ia), std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    std::replace_if(Iter(ia), Iter(ia+sa), equalToTwo, 5);
+    assert(ia[0] == 0);
+    assert(ia[1] == 1);
+    assert(ia[2] == 5);
+    assert(ia[3] == 3);
+    assert(ia[4] == 4);
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/ranges.reverse.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/ranges.reverse.pass.cpp
new file mode 100644
index 0000000..fbeb8a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/ranges.reverse.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<bidirectional_iterator I, sentinel_for<I> S>
+//   requires permutable<I>
+//   constexpr I ranges::reverse(I first, S last);
+// template<bidirectional_range R>
+//   requires permutable<iterator_t<R>>
+//   constexpr borrowed_iterator_t<R> ranges::reverse(R&& r);
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasReverseIt = requires (Iter first, Sent last) { std::ranges::reverse(first, last); };
+
+static_assert(HasReverseIt<int*>);
+static_assert(!HasReverseIt<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasReverseIt<BidirectionalIteratorNotDecrementable>);
+static_assert(!HasReverseIt<PermutableNotForwardIterator>);
+static_assert(!HasReverseIt<PermutableNotSwappable>);
+
+
+template <class Range>
+concept HasReverseR = requires (Range range) { std::ranges::reverse(range); };
+
+static_assert(HasReverseR<UncheckedRange<int*>>);
+static_assert(!HasReverseR<BidirectionalRangeNotDerivedFrom>);
+static_assert(!HasReverseR<BidirectionalRangeNotDecrementable>);
+static_assert(!HasReverseR<PermutableRangeNotForwardIterator>);
+static_assert(!HasReverseR<PermutableRangeNotSwappable>);
+
+template <class Iter, class Sent, size_t N>
+constexpr void test(std::array<int, N> value, std::array<int, N> expected) {
+  {
+    auto val = value;
+    std::same_as<Iter> decltype(auto) ret = std::ranges::reverse(Iter(val.data()), Sent(Iter(val.data() + val.size())));
+    assert(val == expected);
+    assert(base(ret) == val.data() + val.size());
+  }
+  {
+    auto val = value;
+    auto range = std::ranges::subrange(Iter(val.data()), Sent(Iter(val.data() + val.size())));
+    std::same_as<Iter> decltype(auto) ret = std::ranges::reverse(range);
+    assert(val == expected);
+    assert(base(ret) == val.data() + val.size());
+  }
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter, Sent, 4>({1, 2, 3, 4}, {4, 3, 2, 1});
+  // check that an odd number of elements works
+  test<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, {7, 6, 5, 4, 3, 2, 1});
+  // check that an empty range works
+  test<Iter, Sent, 0>({}, {});
+  // check that a single element works
+  test<Iter, Sent, 1>({5}, {5});
+}
+
+struct SwapCounter {
+  int* counter;
+  constexpr SwapCounter(int* counter_) : counter(counter_) {}
+  friend constexpr void swap(SwapCounter& lhs, SwapCounter&) { ++*lhs.counter; }
+};
+
+constexpr bool test() {
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, sentinel_wrapper<bidirectional_iterator<int*>>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, sentinel_wrapper<random_access_iterator<int*>>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>>();
+  test_iterators<int*>();
+
+  test_iterators<ProxyIterator<bidirectional_iterator<int*>>>();
+  test_iterators<ProxyIterator<random_access_iterator<int*>>>();
+  test_iterators<ProxyIterator<contiguous_iterator<int*>>>();
+
+  // check that std::ranges::dangling is returned
+  {
+    [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret = std::ranges::reverse(std::array {1, 2, 3, 4});
+  }
+
+  {
+    {
+      int counter = 0;
+      SwapCounter a[] = {&counter, &counter, &counter, &counter};
+      std::ranges::reverse(a);
+      assert(counter == 2);
+    }
+    {
+      int counter = 0;
+      SwapCounter a[] = {&counter, &counter, &counter, &counter};
+      std::ranges::reverse(a, a + 4);
+      assert(counter == 2);
+    }
+  }
+
+  // Move only types work for ProxyIterator
+  {
+    {
+      MoveOnly a[] = {1, 2, 3};
+      ProxyRange proxyA{a};
+      std::ranges::reverse(proxyA.begin(), proxyA.end());
+      assert(a[0].get() == 3);
+      assert(a[1].get() == 2);
+      assert(a[2].get() == 1);
+    }
+    {
+      MoveOnly a[] = {1, 2, 3};
+      ProxyRange proxyA{a};
+      std::ranges::reverse(proxyA);
+      assert(a[0].get() == 3);
+      assert(a[1].get() == 2);
+      assert(a[2].get() == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/ranges.reverse_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/ranges.reverse_copy.pass.cpp
new file mode 100644
index 0000000..fadab76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/ranges.reverse_copy.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<bidirectional_iterator I, sentinel_for<I> S, weakly_incrementable O>
+//   requires indirectly_copyable<I, O>
+//   constexpr ranges::reverse_copy_result<I, O>
+//     ranges::reverse_copy(I first, S last, O result);
+// template<bidirectional_range R, weakly_incrementable O>
+//   requires indirectly_copyable<iterator_t<R>, O>
+//   constexpr ranges::reverse_copy_result<borrowed_iterator_t<R>, O>
+//     ranges::reverse_copy(R&& r, O result);
+
+// <algorithm>
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Out = int*, class Sent = sentinel_wrapper<Iter>>
+concept HasReverseCopyIt = requires(Iter first, Sent last, Out out) { std::ranges::reverse_copy(first, last, out); };
+
+template <class Range, class Out = int*>
+concept HasReverseCopyR = requires(Range range, Out out) { std::ranges::reverse_copy(range, out); };
+
+static_assert(HasReverseCopyIt<int*>);
+static_assert(!HasReverseCopyIt<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasReverseCopyIt<BidirectionalIteratorNotDecrementable>);
+static_assert(!HasReverseCopyIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasReverseCopyIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasReverseCopyIt<int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasReverseCopyIt<int*, OutputIteratorNotInputOrOutputIterator>);
+
+static_assert(HasReverseCopyR<UncheckedRange<int*>>);
+static_assert(!HasReverseCopyR<BidirectionalRangeNotDerivedFrom>);
+static_assert(!HasReverseCopyR<BidirectionalRangeNotDecrementable>);
+static_assert(!HasReverseCopyR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasReverseCopyR<UncheckedRange<int*>, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasReverseCopyR<UncheckedRange<int*>, OutputIteratorNotInputOrOutputIterator>);
+
+static_assert(std::is_same_v<std::ranges::reverse_copy_result<int, int>, std::ranges::in_out_result<int, int>>);
+
+template <class Iter, class OutIter, class Sent, int N>
+constexpr void test(std::array<int, N> value, std::array<int, N> expected) {
+  {
+    std::array<int, N> out;
+    std::same_as<std::ranges::in_out_result<Iter, OutIter>> decltype(auto) ret =
+        std::ranges::reverse_copy(Iter(value.data()),
+                                 Sent(Iter(value.data() + value.size())),
+                                 OutIter(out.data()));
+    assert(base(ret.in) == value.data() + value.size());
+    assert(base(ret.out) == out.data() + out.size());
+    assert(out == expected);
+  }
+  {
+    std::array<int, N> out;
+    auto range = std::ranges::subrange(Iter(value.data()), Sent(Iter(value.data() + value.size())));
+    std::same_as<std::ranges::in_out_result<Iter, OutIter>> decltype(auto) ret =
+        std::ranges::reverse_copy(range, OutIter(out.data()));
+    assert(base(ret.in) == value.data() + value.size());
+    assert(base(ret.out) == out.data() + out.size());
+    assert(out == expected);
+  }
+}
+
+template <class Iter, class OutIter, class Sent>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter, OutIter, Sent, 4>({1, 2, 3, 4}, {4, 3, 2, 1});
+
+  // check that an empty range works
+  test<Iter, OutIter, Sent, 0>({}, {});
+
+  // check that a single element range works
+  test<Iter, OutIter, Sent, 1>({1}, {1});
+
+  // check that a two element range works
+  test<Iter, OutIter, Sent, 2>({1, 2}, {2, 1});
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_out_iterators() {
+  test_iterators<Iter, cpp20_output_iterator<int*>, Sent>();
+  test_iterators<Iter, forward_iterator<int*>, Sent>();
+  test_iterators<Iter, bidirectional_iterator<int*>, Sent>();
+  test_iterators<Iter, random_access_iterator<int*>, Sent>();
+  test_iterators<Iter, contiguous_iterator<int*>, Sent>();
+  test_iterators<Iter, int*, Sent>();
+}
+
+constexpr bool test() {
+  test_out_iterators<bidirectional_iterator<int*>>();
+  test_out_iterators<random_access_iterator<int*>>();
+  test_out_iterators<contiguous_iterator<int*>>();
+  test_out_iterators<int*>();
+  test_out_iterators<const int*>();
+
+  {
+    struct AssignmentCounter {
+      int* counter;
+
+      constexpr AssignmentCounter(int* counter_) : counter(counter_) {}
+      constexpr AssignmentCounter& operator=(const AssignmentCounter&) { ++*counter; return *this; }
+    };
+
+    {
+      int c = 0;
+      AssignmentCounter a[] = {&c, &c, &c, &c};
+      AssignmentCounter b[] = {&c, &c, &c, &c};
+      std::ranges::reverse_copy(a, a + 4, b);
+      assert(c == 4);
+    }
+    {
+      int c = 0;
+      AssignmentCounter a[] = {&c, &c, &c, &c};
+      AssignmentCounter b[] = {&c, &c, &c, &c};
+      std::ranges::reverse_copy(a, b);
+      assert(c == 4);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse.pass.cpp
new file mode 100644
index 0000000..86641e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter>
+//   requires HasSwap<Iter::reference, Iter::reference>
+//   constexpr void  // constexpr in C++20
+//   reverse(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    int ia[] = {0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    std::reverse(Iter(ia), Iter(ia));
+    assert(ia[0] == 0);
+    std::reverse(Iter(ia), Iter(ia+sa));
+    assert(ia[0] == 0);
+
+    int ib[] = {0, 1};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    std::reverse(Iter(ib), Iter(ib+sb));
+    assert(ib[0] == 1);
+    assert(ib[1] == 0);
+
+    int ic[] = {0, 1, 2};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    std::reverse(Iter(ic), Iter(ic+sc));
+    assert(ic[0] == 2);
+    assert(ic[1] == 1);
+    assert(ic[2] == 0);
+
+    int id[] = {0, 1, 2, 3};
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    std::reverse(Iter(id), Iter(id+sd));
+    assert(id[0] == 3);
+    assert(id[1] == 2);
+    assert(id[2] == 1);
+    assert(id[3] == 0);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<bidirectional_iterator<int*>>());
+    static_assert(test<random_access_iterator<int*>>());
+    static_assert(test<int*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp
new file mode 100644
index 0000000..150ade5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.reverse/reverse_copy.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator InIter, OutputIterator<auto, InIter::reference> OutIter>
+//   constexpr OutIter          // constexpr after C++17
+//   reverse_copy(InIter first, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 5, 6};
+    int ib[std::size(ia)] = {0};
+
+    auto it = std::reverse_copy(std::begin(ia), std::end(ia), std::begin(ib));
+
+    return std::distance(std::begin(ib), it) == static_cast<int>(std::size(ia))
+        && std::equal   (std::begin(ia), std::end(ia), std::rbegin(ib))
+           ;
+    }
+#endif
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    const int ia[] = {0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ja[sa] = {-1};
+    OutIter r = std::reverse_copy(InIter(ia), InIter(ia), OutIter(ja));
+    assert(base(r) == ja);
+    assert(ja[0] == -1);
+    r = std::reverse_copy(InIter(ia), InIter(ia+sa), OutIter(ja));
+    assert(ja[0] == 0);
+
+    const int ib[] = {0, 1};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int jb[sb] = {-1};
+    r = std::reverse_copy(InIter(ib), InIter(ib+sb), OutIter(jb));
+    assert(base(r) == jb+sb);
+    assert(jb[0] == 1);
+    assert(jb[1] == 0);
+
+    const int ic[] = {0, 1, 2};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    int jc[sc] = {-1};
+    r = std::reverse_copy(InIter(ic), InIter(ic+sc), OutIter(jc));
+    assert(base(r) == jc+sc);
+    assert(jc[0] == 2);
+    assert(jc[1] == 1);
+    assert(jc[2] == 0);
+
+    int id[] = {0, 1, 2, 3};
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    int jd[sd] = {-1};
+    r = std::reverse_copy(InIter(id), InIter(id+sd), OutIter(jd));
+    assert(base(r) == jd+sd);
+    assert(jd[0] == 3);
+    assert(jd[1] == 2);
+    assert(jd[2] == 1);
+    assert(jd[3] == 0);
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/ranges.rotate_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/ranges.rotate_copy.pass.cpp
new file mode 100644
index 0000000..b41ff4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/ranges.rotate_copy.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I, sentinel_for<I> S, weakly_incrementable O>
+//   requires indirectly_copyable<I, O>
+//   constexpr ranges::rotate_copy_result<I, O>
+//     ranges::rotate_copy(I first, I middle, S last, O result);
+// template<forward_range R, weakly_incrementable O>
+//   requires indirectly_copyable<iterator_t<R>, O>
+//   constexpr ranges::rotate_copy_result<borrowed_iterator_t<R>, O>
+//     ranges::rotate_copy(R&& r, iterator_t<R> middle, O result);
+
+// <algorithm>
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Out = int*, class Sent = sentinel_wrapper<Iter>>
+concept HasRotateCopyIt = requires(Iter first, Sent last, Out out) { std::ranges::rotate_copy(first, first, last, out); };
+
+template <class Range, class Out = int*>
+concept HasRotateCopyR = requires(Range range, Out out) { std::ranges::rotate_copy(range, nullptr, out); };
+
+static_assert(HasRotateCopyIt<int*>);
+static_assert(!HasRotateCopyIt<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasRotateCopyIt<BidirectionalIteratorNotDecrementable>);
+static_assert(!HasRotateCopyIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasRotateCopyIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasRotateCopyIt<int*, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasRotateCopyIt<int*, OutputIteratorNotInputOrOutputIterator>);
+
+static_assert(HasRotateCopyR<UncheckedRange<int*>>);
+static_assert(!HasRotateCopyR<BidirectionalRangeNotDerivedFrom>);
+static_assert(!HasRotateCopyR<BidirectionalRangeNotDecrementable>);
+static_assert(!HasRotateCopyR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasRotateCopyR<UncheckedRange<int*>, OutputIteratorNotIndirectlyWritable>);
+static_assert(!HasRotateCopyR<UncheckedRange<int*>, OutputIteratorNotInputOrOutputIterator>);
+
+static_assert(std::is_same_v<std::ranges::rotate_copy_result<int, int>, std::ranges::in_out_result<int, int>>);
+
+template <class Iter, class OutIter, class Sent, int N>
+constexpr void test(std::array<int, N> value, size_t middle, std::array<int, N> expected) {
+  {
+    std::array<int, N> out;
+    std::same_as<std::ranges::in_out_result<Iter, OutIter>> decltype(auto) ret =
+        std::ranges::rotate_copy(Iter(value.data()),
+                                 Iter(value.data() + middle),
+                                 Sent(Iter(value.data() + value.size())),
+                                 OutIter(out.data()));
+    assert(base(ret.in) == value.data() + value.size());
+    assert(base(ret.out) == out.data() + out.size());
+    assert(out == expected);
+  }
+  {
+    std::array<int, N> out;
+    auto range = std::ranges::subrange(Iter(value.data()), Sent(Iter(value.data() + value.size())));
+    std::same_as<std::ranges::in_out_result<Iter, OutIter>> decltype(auto) ret =
+        std::ranges::rotate_copy(range, Iter(value.data() + middle), OutIter(out.data()));
+    assert(base(ret.in) == value.data() + value.size());
+    assert(base(ret.out) == out.data() + out.size());
+    assert(out == expected);
+  }
+}
+
+template <class Iter, class OutIter, class Sent>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter, OutIter, Sent, 4>({1, 2, 3, 4}, 2, {3, 4, 1, 2});
+
+  // check that an empty range works
+  test<Iter, OutIter, Sent, 0>({}, 0, {});
+
+  // check that a single element range works
+  test<Iter, OutIter, Sent, 1>({1}, 0, {1});
+
+  // check that a two element range works
+  test<Iter, OutIter, Sent, 2>({1, 2}, 1, {2, 1});
+
+  // rotate on the first element
+  test<Iter, OutIter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 0, {1, 2, 3, 4, 5, 6, 7});
+
+  // rotate on the second element
+  test<Iter, OutIter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 1, {2, 3, 4, 5, 6, 7, 1});
+
+  // rotate on the last element
+  test<Iter, OutIter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 6, {7, 1, 2, 3, 4, 5, 6});
+
+  // rotate on the one-past-the-end pointer
+  test<Iter, OutIter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 7, {1, 2, 3, 4, 5, 6, 7});
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_out_iterators() {
+  test_iterators<Iter, cpp20_output_iterator<int*>, Sent>();
+  test_iterators<Iter, forward_iterator<int*>, Sent>();
+  test_iterators<Iter, bidirectional_iterator<int*>, Sent>();
+  test_iterators<Iter, random_access_iterator<int*>, Sent>();
+  test_iterators<Iter, contiguous_iterator<int*>, Sent>();
+  test_iterators<Iter, int*, Sent>();
+}
+
+constexpr bool test() {
+  test_out_iterators<bidirectional_iterator<int*>>();
+  test_out_iterators<random_access_iterator<int*>>();
+  test_out_iterators<contiguous_iterator<int*>>();
+  test_out_iterators<int*>();
+  test_out_iterators<const int*>();
+
+  {
+    struct AssignmentCounter {
+      int* counter;
+
+      constexpr AssignmentCounter(int* counter_) : counter(counter_) {}
+      constexpr AssignmentCounter& operator=(const AssignmentCounter&) { ++*counter; return *this; }
+    };
+
+    {
+      int c = 0;
+      AssignmentCounter a[] = {&c, &c, &c, &c};
+      AssignmentCounter b[] = {&c, &c, &c, &c};
+      std::ranges::rotate_copy(a, a + 2, a + 4, b);
+      assert(c == 4);
+    }
+    {
+      int c = 0;
+      AssignmentCounter a[] = {&c, &c, &c, &c};
+      AssignmentCounter b[] = {&c, &c, &c, &c};
+      std::ranges::rotate_copy(a, a + 2, b);
+      assert(c == 4);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/ranges_rotate.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/ranges_rotate.pass.cpp
new file mode 100644
index 0000000..c34dac1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/ranges_rotate.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<permutable I, sentinel_for<I> S>
+//   constexpr subrange<I> rotate(I first, I middle, S last);                                        // since C++20
+//
+// template<forward_range R>
+//   requires permutable<iterator_t<R>>
+//   constexpr borrowed_subrange_t<R> rotate(R&& r, iterator_t<R> middle);                           // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*>
+concept HasRotateIter =
+    requires(Iter&& iter, Sent&& sent) {
+      std::ranges::rotate(std::forward<Iter>(iter), std::forward<Iter>(iter), std::forward<Sent>(sent));
+    };
+
+static_assert(HasRotateIter<int*, int*>);
+
+// !permutable<I>
+static_assert(!HasRotateIter<PermutableNotForwardIterator>);
+static_assert(!HasRotateIter<PermutableNotSwappable>);
+
+// !sentinel_for<S, I>
+static_assert(!HasRotateIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasRotateIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range>
+concept HasRotateRange =
+    requires(Range&& range, std::ranges::iterator_t<Range> iter) {
+      std::ranges::rotate(std::forward<Range>(range), iter);
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasRotateRange<R<int*>>);
+
+// !forward_range<R>
+static_assert(!HasRotateRange<ForwardRangeNotDerivedFrom>);
+static_assert(!HasRotateRange<ForwardRangeNotIncrementable>);
+static_assert(!HasRotateRange<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasRotateRange<ForwardRangeNotSentinelEqualityComparableWith>);
+
+// !permutable<iterator_t<R>>
+static_assert(!HasRotateRange<PermutableRangeNotForwardIterator>);
+static_assert(!HasRotateRange<PermutableRangeNotSwappable>);
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(const std::array<int, N> input, size_t mid_index, std::array<int, N> expected) {
+  assert(mid_index <= N);
+
+  { // (iterator, sentinel) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto mid = Iter(in.data() + mid_index);
+    auto end = Sent(Iter(in.data() + in.size()));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::rotate(begin, mid, end);
+    assert(base(result.begin()) == in.data() + in.size() - mid_index);
+    assert(base(result.end()) == in.data() + in.size());
+    assert(in == expected);
+  }
+
+  { // (range) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto mid = Iter(in.data() + mid_index);
+    auto end = Sent(Iter(in.data() + in.size()));
+    auto range = std::ranges::subrange(std::move(begin), std::move(end));
+
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::rotate(range, mid);
+    assert(base(result.begin()) == in.data() + in.size() - mid_index);
+    assert(base(result.end()) == in.data() + in.size());
+    assert(in == expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iter_sent() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, 0, {});
+
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, 0, {1});
+
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({1, 2}, 1, {2, 1});
+
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({1, 2, 3}, 1, {2, 3, 1});
+  test_one<Iter, Sent, 3>({1, 2, 3}, 2, {3, 1, 2});
+
+  // Longer sequence.
+  test_one<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 2, {3, 4, 5, 6, 7, 1, 2});
+
+  // Rotate around the middle.
+  test_one<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 3, {4, 5, 6, 7, 1, 2, 3});
+
+  // Rotate around the 1st element (no-op).
+  test_one<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 0, {1, 2, 3, 4, 5, 6, 7});
+
+  // Rotate around the 2nd element.
+  test_one<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 1, {2, 3, 4, 5, 6, 7, 1});
+
+  // Rotate around the last element.
+  test_one<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 6, {7, 1, 2, 3, 4, 5, 6});
+
+  // Pass `end()` as `mid` (no-op).
+  test_one<Iter, Sent, 7>({1, 2, 3, 4, 5, 6, 7}, 7, {1, 2, 3, 4, 5, 6, 7});
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  test_iter_sent<Iter, Iter>();
+  test_iter_sent<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iter<forward_iterator<int*>>();
+  test_iter<bidirectional_iterator<int*>>();
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // Complexity: at most `last - first` swaps.
+    const std::array input = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+    auto expected = static_cast<int>(input.size());
+
+    {
+      auto in = input;
+      int swaps = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps);
+
+      for (size_t mid = 0; mid != input.size(); ++mid) {
+        std::ranges::rotate(begin, begin + mid, end);
+        assert(swaps <= expected);
+      }
+    }
+
+    {
+      auto in = input;
+      int swaps = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps);
+      auto range = std::ranges::subrange(begin, end);
+
+      for (size_t mid = 0; mid != input.size(); ++mid) {
+        std::ranges::rotate(range, begin + mid);
+        assert(swaps <= expected);
+      }
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate.pass.cpp
new file mode 100644
index 0000000..7bbf3ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate.pass.cpp
@@ -0,0 +1,448 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ShuffleIterator Iter>
+//   Iter
+//   rotate(Iter first, Iter middle, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter>
+TEST_CONSTEXPR_CXX17 bool
+test()
+{
+    int ia[] = {0};
+    const int sa = static_cast<int>(sizeof(ia)/sizeof(ia[0]));
+    Iter r = std::rotate(Iter(ia), Iter(ia), Iter(ia));
+    assert(base(r) == ia);
+    assert(ia[0] == 0);
+    r = std::rotate(Iter(ia), Iter(ia), Iter(ia+sa));
+    assert(base(r) == ia+sa);
+    assert(ia[0] == 0);
+    r = std::rotate(Iter(ia), Iter(ia+sa), Iter(ia+sa));
+    assert(base(r) == ia);
+    assert(ia[0] == 0);
+
+    int ib[] = {0, 1};
+    const int sb = static_cast<int>(sizeof(ib)/sizeof(ib[0]));
+    r = std::rotate(Iter(ib), Iter(ib), Iter(ib+sb));
+    assert(base(r) == ib+sb);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+    r = std::rotate(Iter(ib), Iter(ib+1), Iter(ib+sb));
+    assert(base(r) == ib+1);
+    assert(ib[0] == 1);
+    assert(ib[1] == 0);
+    r = std::rotate(Iter(ib), Iter(ib+sb), Iter(ib+sb));
+    assert(base(r) == ib);
+    assert(ib[0] == 1);
+    assert(ib[1] == 0);
+
+    int ic[] = {0, 1, 2};
+    const int sc = static_cast<int>(sizeof(ic)/sizeof(ic[0]));
+    r = std::rotate(Iter(ic), Iter(ic), Iter(ic+sc));
+    assert(base(r) == ic+sc);
+    assert(ic[0] == 0);
+    assert(ic[1] == 1);
+    assert(ic[2] == 2);
+    r = std::rotate(Iter(ic), Iter(ic+1), Iter(ic+sc));
+    assert(base(r) == ic+2);
+    assert(ic[0] == 1);
+    assert(ic[1] == 2);
+    assert(ic[2] == 0);
+    r = std::rotate(Iter(ic), Iter(ic+2), Iter(ic+sc));
+    assert(base(r) == ic+1);
+    assert(ic[0] == 0);
+    assert(ic[1] == 1);
+    assert(ic[2] == 2);
+    r = std::rotate(Iter(ic), Iter(ic+sc), Iter(ic+sc));
+    assert(base(r) == ic);
+    assert(ic[0] == 0);
+    assert(ic[1] == 1);
+    assert(ic[2] == 2);
+
+    int id[] = {0, 1, 2, 3};
+    const int sd = static_cast<int>(sizeof(id)/sizeof(id[0]));
+    r = std::rotate(Iter(id), Iter(id), Iter(id+sd));
+    assert(base(r) == id+sd);
+    assert(id[0] == 0);
+    assert(id[1] == 1);
+    assert(id[2] == 2);
+    assert(id[3] == 3);
+    r = std::rotate(Iter(id), Iter(id+1), Iter(id+sd));
+    assert(base(r) == id+3);
+    assert(id[0] == 1);
+    assert(id[1] == 2);
+    assert(id[2] == 3);
+    assert(id[3] == 0);
+    r = std::rotate(Iter(id), Iter(id+2), Iter(id+sd));
+    assert(base(r) == id+2);
+    assert(id[0] == 3);
+    assert(id[1] == 0);
+    assert(id[2] == 1);
+    assert(id[3] == 2);
+    r = std::rotate(Iter(id), Iter(id+3), Iter(id+sd));
+    assert(base(r) == id+1);
+    assert(id[0] == 2);
+    assert(id[1] == 3);
+    assert(id[2] == 0);
+    assert(id[3] == 1);
+    r = std::rotate(Iter(id), Iter(id+sd), Iter(id+sd));
+    assert(base(r) == id);
+    assert(id[0] == 2);
+    assert(id[1] == 3);
+    assert(id[2] == 0);
+    assert(id[3] == 1);
+
+    int ie[] = {0, 1, 2, 3, 4};
+    const int se = static_cast<int>(sizeof(ie)/sizeof(ie[0]));
+    r = std::rotate(Iter(ie), Iter(ie), Iter(ie+se));
+    assert(base(r) == ie+se);
+    assert(ie[0] == 0);
+    assert(ie[1] == 1);
+    assert(ie[2] == 2);
+    assert(ie[3] == 3);
+    assert(ie[4] == 4);
+    r = std::rotate(Iter(ie), Iter(ie+1), Iter(ie+se));
+    assert(base(r) == ie+4);
+    assert(ie[0] == 1);
+    assert(ie[1] == 2);
+    assert(ie[2] == 3);
+    assert(ie[3] == 4);
+    assert(ie[4] == 0);
+    r = std::rotate(Iter(ie), Iter(ie+2), Iter(ie+se));
+    assert(base(r) == ie+3);
+    assert(ie[0] == 3);
+    assert(ie[1] == 4);
+    assert(ie[2] == 0);
+    assert(ie[3] == 1);
+    assert(ie[4] == 2);
+    r = std::rotate(Iter(ie), Iter(ie+3), Iter(ie+se));
+    assert(base(r) == ie+2);
+    assert(ie[0] == 1);
+    assert(ie[1] == 2);
+    assert(ie[2] == 3);
+    assert(ie[3] == 4);
+    assert(ie[4] == 0);
+    r = std::rotate(Iter(ie), Iter(ie+4), Iter(ie+se));
+    assert(base(r) == ie+1);
+    assert(ie[0] == 0);
+    assert(ie[1] == 1);
+    assert(ie[2] == 2);
+    assert(ie[3] == 3);
+    assert(ie[4] == 4);
+    r = std::rotate(Iter(ie), Iter(ie+se), Iter(ie+se));
+    assert(base(r) == ie);
+    assert(ie[0] == 0);
+    assert(ie[1] == 1);
+    assert(ie[2] == 2);
+    assert(ie[3] == 3);
+    assert(ie[4] == 4);
+
+    int ig[] = {0, 1, 2, 3, 4, 5};
+    const int sg = static_cast<int>(sizeof(ig)/sizeof(ig[0]));
+    r = std::rotate(Iter(ig), Iter(ig), Iter(ig+sg));
+    assert(base(r) == ig+sg);
+    assert(ig[0] == 0);
+    assert(ig[1] == 1);
+    assert(ig[2] == 2);
+    assert(ig[3] == 3);
+    assert(ig[4] == 4);
+    assert(ig[5] == 5);
+    r = std::rotate(Iter(ig), Iter(ig+1), Iter(ig+sg));
+    assert(base(r) == ig+5);
+    assert(ig[0] == 1);
+    assert(ig[1] == 2);
+    assert(ig[2] == 3);
+    assert(ig[3] == 4);
+    assert(ig[4] == 5);
+    assert(ig[5] == 0);
+    r = std::rotate(Iter(ig), Iter(ig+2), Iter(ig+sg));
+    assert(base(r) == ig+4);
+    assert(ig[0] == 3);
+    assert(ig[1] == 4);
+    assert(ig[2] == 5);
+    assert(ig[3] == 0);
+    assert(ig[4] == 1);
+    assert(ig[5] == 2);
+    r = std::rotate(Iter(ig), Iter(ig+3), Iter(ig+sg));
+    assert(base(r) == ig+3);
+    assert(ig[0] == 0);
+    assert(ig[1] == 1);
+    assert(ig[2] == 2);
+    assert(ig[3] == 3);
+    assert(ig[4] == 4);
+    assert(ig[5] == 5);
+    r = std::rotate(Iter(ig), Iter(ig+4), Iter(ig+sg));
+    assert(base(r) == ig+2);
+    assert(ig[0] == 4);
+    assert(ig[1] == 5);
+    assert(ig[2] == 0);
+    assert(ig[3] == 1);
+    assert(ig[4] == 2);
+    assert(ig[5] == 3);
+    r = std::rotate(Iter(ig), Iter(ig+5), Iter(ig+sg));
+    assert(base(r) == ig+1);
+    assert(ig[0] == 3);
+    assert(ig[1] == 4);
+    assert(ig[2] == 5);
+    assert(ig[3] == 0);
+    assert(ig[4] == 1);
+    assert(ig[5] == 2);
+    r = std::rotate(Iter(ig), Iter(ig+sg), Iter(ig+sg));
+    assert(base(r) == ig);
+    assert(ig[0] == 3);
+    assert(ig[1] == 4);
+    assert(ig[2] == 5);
+    assert(ig[3] == 0);
+    assert(ig[4] == 1);
+    assert(ig[5] == 2);
+
+    return true;
+}
+
+#if TEST_STD_VER >= 11
+
+template <class Iter>
+void
+test1()
+{
+    std::unique_ptr<int> ia[1];
+    const int sa = static_cast<int>(sizeof(ia)/sizeof(ia[0]));
+    for (int i = 0; i < sa; ++i)
+        ia[i].reset(new int(i));
+    Iter r = std::rotate(Iter(ia), Iter(ia), Iter(ia));
+    assert(base(r) == ia);
+    assert(*ia[0] == 0);
+    r = std::rotate(Iter(ia), Iter(ia), Iter(ia+sa));
+    assert(base(r) == ia+sa);
+    assert(*ia[0] == 0);
+    r = std::rotate(Iter(ia), Iter(ia+sa), Iter(ia+sa));
+    assert(base(r) == ia);
+    assert(*ia[0] == 0);
+
+    std::unique_ptr<int> ib[2];
+    const int sb = static_cast<int>(sizeof(ib)/sizeof(ib[0]));
+    for (int i = 0; i < sb; ++i)
+        ib[i].reset(new int(i));
+    r = std::rotate(Iter(ib), Iter(ib), Iter(ib+sb));
+    assert(base(r) == ib+sb);
+    assert(*ib[0] == 0);
+    assert(*ib[1] == 1);
+    r = std::rotate(Iter(ib), Iter(ib+1), Iter(ib+sb));
+    assert(base(r) == ib+1);
+    assert(*ib[0] == 1);
+    assert(*ib[1] == 0);
+    r = std::rotate(Iter(ib), Iter(ib+sb), Iter(ib+sb));
+    assert(base(r) == ib);
+    assert(*ib[0] == 1);
+    assert(*ib[1] == 0);
+
+    std::unique_ptr<int> ic[3];
+    const int sc = static_cast<int>(sizeof(ic)/sizeof(ic[0]));
+    for (int i = 0; i < sc; ++i)
+        ic[i].reset(new int(i));
+    r = std::rotate(Iter(ic), Iter(ic), Iter(ic+sc));
+    assert(base(r) == ic+sc);
+    assert(*ic[0] == 0);
+    assert(*ic[1] == 1);
+    assert(*ic[2] == 2);
+    r = std::rotate(Iter(ic), Iter(ic+1), Iter(ic+sc));
+    assert(base(r) == ic+2);
+    assert(*ic[0] == 1);
+    assert(*ic[1] == 2);
+    assert(*ic[2] == 0);
+    r = std::rotate(Iter(ic), Iter(ic+2), Iter(ic+sc));
+    assert(base(r) == ic+1);
+    assert(*ic[0] == 0);
+    assert(*ic[1] == 1);
+    assert(*ic[2] == 2);
+    r = std::rotate(Iter(ic), Iter(ic+sc), Iter(ic+sc));
+    assert(base(r) == ic);
+    assert(*ic[0] == 0);
+    assert(*ic[1] == 1);
+    assert(*ic[2] == 2);
+
+    std::unique_ptr<int> id[4];
+    const int sd = static_cast<int>(sizeof(id)/sizeof(id[0]));
+    for (int i = 0; i < sd; ++i)
+        id[i].reset(new int(i));
+    r = std::rotate(Iter(id), Iter(id), Iter(id+sd));
+    assert(base(r) == id+sd);
+    assert(*id[0] == 0);
+    assert(*id[1] == 1);
+    assert(*id[2] == 2);
+    assert(*id[3] == 3);
+    r = std::rotate(Iter(id), Iter(id+1), Iter(id+sd));
+    assert(base(r) == id+3);
+    assert(*id[0] == 1);
+    assert(*id[1] == 2);
+    assert(*id[2] == 3);
+    assert(*id[3] == 0);
+    r = std::rotate(Iter(id), Iter(id+2), Iter(id+sd));
+    assert(base(r) == id+2);
+    assert(*id[0] == 3);
+    assert(*id[1] == 0);
+    assert(*id[2] == 1);
+    assert(*id[3] == 2);
+    r = std::rotate(Iter(id), Iter(id+3), Iter(id+sd));
+    assert(base(r) == id+1);
+    assert(*id[0] == 2);
+    assert(*id[1] == 3);
+    assert(*id[2] == 0);
+    assert(*id[3] == 1);
+    r = std::rotate(Iter(id), Iter(id+sd), Iter(id+sd));
+    assert(base(r) == id);
+    assert(*id[0] == 2);
+    assert(*id[1] == 3);
+    assert(*id[2] == 0);
+    assert(*id[3] == 1);
+
+    std::unique_ptr<int> ie[5];
+    const int se = static_cast<int>(sizeof(ie)/sizeof(ie[0]));
+    for (int i = 0; i < se; ++i)
+        ie[i].reset(new int(i));
+    r = std::rotate(Iter(ie), Iter(ie), Iter(ie+se));
+    assert(base(r) == ie+se);
+    assert(*ie[0] == 0);
+    assert(*ie[1] == 1);
+    assert(*ie[2] == 2);
+    assert(*ie[3] == 3);
+    assert(*ie[4] == 4);
+    r = std::rotate(Iter(ie), Iter(ie+1), Iter(ie+se));
+    assert(base(r) == ie+4);
+    assert(*ie[0] == 1);
+    assert(*ie[1] == 2);
+    assert(*ie[2] == 3);
+    assert(*ie[3] == 4);
+    assert(*ie[4] == 0);
+    r = std::rotate(Iter(ie), Iter(ie+2), Iter(ie+se));
+    assert(base(r) == ie+3);
+    assert(*ie[0] == 3);
+    assert(*ie[1] == 4);
+    assert(*ie[2] == 0);
+    assert(*ie[3] == 1);
+    assert(*ie[4] == 2);
+    r = std::rotate(Iter(ie), Iter(ie+3), Iter(ie+se));
+    assert(base(r) == ie+2);
+    assert(*ie[0] == 1);
+    assert(*ie[1] == 2);
+    assert(*ie[2] == 3);
+    assert(*ie[3] == 4);
+    assert(*ie[4] == 0);
+    r = std::rotate(Iter(ie), Iter(ie+4), Iter(ie+se));
+    assert(base(r) == ie+1);
+    assert(*ie[0] == 0);
+    assert(*ie[1] == 1);
+    assert(*ie[2] == 2);
+    assert(*ie[3] == 3);
+    assert(*ie[4] == 4);
+    r = std::rotate(Iter(ie), Iter(ie+se), Iter(ie+se));
+    assert(base(r) == ie);
+    assert(*ie[0] == 0);
+    assert(*ie[1] == 1);
+    assert(*ie[2] == 2);
+    assert(*ie[3] == 3);
+    assert(*ie[4] == 4);
+
+    std::unique_ptr<int> ig[6];
+    const int sg = static_cast<int>(sizeof(ig)/sizeof(ig[0]));
+    for (int i = 0; i < sg; ++i)
+        ig[i].reset(new int(i));
+    r = std::rotate(Iter(ig), Iter(ig), Iter(ig+sg));
+    assert(base(r) == ig+sg);
+    assert(*ig[0] == 0);
+    assert(*ig[1] == 1);
+    assert(*ig[2] == 2);
+    assert(*ig[3] == 3);
+    assert(*ig[4] == 4);
+    assert(*ig[5] == 5);
+    r = std::rotate(Iter(ig), Iter(ig+1), Iter(ig+sg));
+    assert(base(r) == ig+5);
+    assert(*ig[0] == 1);
+    assert(*ig[1] == 2);
+    assert(*ig[2] == 3);
+    assert(*ig[3] == 4);
+    assert(*ig[4] == 5);
+    assert(*ig[5] == 0);
+    r = std::rotate(Iter(ig), Iter(ig+2), Iter(ig+sg));
+    assert(base(r) == ig+4);
+    assert(*ig[0] == 3);
+    assert(*ig[1] == 4);
+    assert(*ig[2] == 5);
+    assert(*ig[3] == 0);
+    assert(*ig[4] == 1);
+    assert(*ig[5] == 2);
+    r = std::rotate(Iter(ig), Iter(ig+3), Iter(ig+sg));
+    assert(base(r) == ig+3);
+    assert(*ig[0] == 0);
+    assert(*ig[1] == 1);
+    assert(*ig[2] == 2);
+    assert(*ig[3] == 3);
+    assert(*ig[4] == 4);
+    assert(*ig[5] == 5);
+    r = std::rotate(Iter(ig), Iter(ig+4), Iter(ig+sg));
+    assert(base(r) == ig+2);
+    assert(*ig[0] == 4);
+    assert(*ig[1] == 5);
+    assert(*ig[2] == 0);
+    assert(*ig[3] == 1);
+    assert(*ig[4] == 2);
+    assert(*ig[5] == 3);
+    r = std::rotate(Iter(ig), Iter(ig+5), Iter(ig+sg));
+    assert(base(r) == ig+1);
+    assert(*ig[0] == 3);
+    assert(*ig[1] == 4);
+    assert(*ig[2] == 5);
+    assert(*ig[3] == 0);
+    assert(*ig[4] == 1);
+    assert(*ig[5] == 2);
+    r = std::rotate(Iter(ig), Iter(ig+sg), Iter(ig+sg));
+    assert(base(r) == ig);
+    assert(*ig[0] == 3);
+    assert(*ig[1] == 4);
+    assert(*ig[2] == 5);
+    assert(*ig[3] == 0);
+    assert(*ig[4] == 1);
+    assert(*ig[5] == 2);
+}
+
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+
+    test1<forward_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*>();
+
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test<forward_iterator<int*> >());
+    static_assert(test<bidirectional_iterator<int*> >());
+    static_assert(test<random_access_iterator<int*> >());
+    static_assert(test<int*>());
+#endif // TEST_STD_VER > 17
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate_copy.pass.cpp
new file mode 100644
index 0000000..cba0d3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.rotate/rotate_copy.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator InIter, OutputIterator<auto, InIter::reference> OutIter>
+//   constexpr OutIter          // constexpr after C++17
+//   rotate_copy(InIter first, InIter middle, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void test() {
+  int ia[] = {0, 1, 2, 3};
+  const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+  int ib[sa] = {0};
+
+  OutIter r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia), OutIter(ib));
+  assert(base(r) == ib);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia + 1), OutIter(ib));
+  assert(base(r) == ib + 1);
+  assert(ib[0] == 0);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 1), InIter(ia + 1), OutIter(ib));
+  assert(base(r) == ib + 1);
+  assert(ib[0] == 0);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia + 2), OutIter(ib));
+  assert(base(r) == ib + 2);
+  assert(ib[0] == 0);
+  assert(ib[1] == 1);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 1), InIter(ia + 2), OutIter(ib));
+  assert(base(r) == ib + 2);
+  assert(ib[0] == 1);
+  assert(ib[1] == 0);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 2), InIter(ia + 2), OutIter(ib));
+  assert(base(r) == ib + 2);
+  assert(ib[0] == 0);
+  assert(ib[1] == 1);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia + 3), OutIter(ib));
+  assert(base(r) == ib + 3);
+  assert(ib[0] == 0);
+  assert(ib[1] == 1);
+  assert(ib[2] == 2);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 1), InIter(ia + 3), OutIter(ib));
+  assert(base(r) == ib + 3);
+  assert(ib[0] == 1);
+  assert(ib[1] == 2);
+  assert(ib[2] == 0);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 2), InIter(ia + 3), OutIter(ib));
+  assert(base(r) == ib + 3);
+  assert(ib[0] == 2);
+  assert(ib[1] == 0);
+  assert(ib[2] == 1);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 3), InIter(ia + 3), OutIter(ib));
+  assert(base(r) == ib + 3);
+  assert(ib[0] == 0);
+  assert(ib[1] == 1);
+  assert(ib[2] == 2);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia), InIter(ia + 4), OutIter(ib));
+  assert(base(r) == ib + 4);
+  assert(ib[0] == 0);
+  assert(ib[1] == 1);
+  assert(ib[2] == 2);
+  assert(ib[3] == 3);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 1), InIter(ia + 4), OutIter(ib));
+  assert(base(r) == ib + 4);
+  assert(ib[0] == 1);
+  assert(ib[1] == 2);
+  assert(ib[2] == 3);
+  assert(ib[3] == 0);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 2), InIter(ia + 4), OutIter(ib));
+  assert(base(r) == ib + 4);
+  assert(ib[0] == 2);
+  assert(ib[1] == 3);
+  assert(ib[2] == 0);
+  assert(ib[3] == 1);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 3), InIter(ia + 4), OutIter(ib));
+  assert(base(r) == ib + 4);
+  assert(ib[0] == 3);
+  assert(ib[1] == 0);
+  assert(ib[2] == 1);
+  assert(ib[3] == 2);
+
+  r = std::rotate_copy(InIter(ia), InIter(ia + 4), InIter(ia + 4), OutIter(ib));
+  assert(base(r) == ib + 4);
+  assert(ib[0] == 0);
+  assert(ib[1] == 1);
+  assert(ib[2] == 2);
+  assert(ib[3] == 3);
+
+  {
+    int ints[] = {1, 3, 5, 2, 5, 6};
+    int const n_ints = sizeof(ints)/sizeof(int);
+    int zeros[n_ints] = {0};
+
+    const size_t N = 2;
+    const auto middle = std::begin(ints) + N;
+    auto it = std::rotate_copy(std::begin(ints), middle, std::end(ints), std::begin(zeros));
+    assert(std::distance(std::begin(zeros), it) == n_ints);
+    assert(std::equal(std::begin(ints), middle, std::begin(zeros) + n_ints - N));
+    assert(std::equal(middle, std::end(ints), std::begin(zeros)));
+  }
+}
+
+TEST_CONSTEXPR_CXX20 bool all_tests() {
+  test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+  test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+  test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+  test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+  test<bidirectional_iterator<const int*>, int*>();
+
+  test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+  test<random_access_iterator<const int*>, forward_iterator<int*> >();
+  test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+  test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+  test<random_access_iterator<const int*>, int*>();
+
+  test<const int*, cpp17_output_iterator<int*> >();
+  test<const int*, forward_iterator<int*> >();
+  test<const int*, bidirectional_iterator<int*> >();
+  test<const int*, random_access_iterator<int*> >();
+  test<const int*, int*>();
+
+  return true;
+}
+
+int main(int, char**) {
+  all_tests();
+
+#if TEST_STD_VER > 17
+  static_assert(all_tests());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/shift_left.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/shift_left.pass.cpp
new file mode 100644
index 0000000..90540f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/shift_left.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<class ForwardIterator>
+// constexpr ForwardIterator
+//   shift_left(ForwardIterator first, ForwardIterator last,
+//              typename iterator_traits<ForwardIterator>::difference_type n);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+constexpr bool test()
+{
+    int orig[] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+
+    for (int n = 0; n <= 15; ++n) {
+        for (int k = 0; k <= n+2; ++k) {
+            std::copy(orig, orig+n, work);
+            Iter it = std::shift_left(Iter(work), Iter(work+n), k);
+            if (0 <= k && k < n) {
+                assert(it == Iter(work+n-k));
+                assert(std::equal(orig+k, orig+n, work, work+n-k));
+            } else {
+                assert(it == Iter(work));
+                assert(std::equal(orig, orig+n, work, work+n));
+            }
+        }
+    }
+
+    // n == 0
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_left(b, e, 0);
+        assert(std::equal(std::begin(expected), std::end(expected), b, e));
+        assert(it == e);
+    }
+
+    // n > 0 && n < len
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_left(b, e, 1);
+        assert(std::equal(std::begin(expected), std::end(expected), b, it));
+    }
+    {
+        T input[]          = { 1, 2, 3, 4, 5, 6, 7, 8 };
+        const T expected[] = { 3, 4, 5, 6, 7, 8 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_left(b, e, 2);
+        assert(std::equal(std::begin(expected), std::end(expected), b, it));
+    }
+    {
+        T input[]          = { 1, 2, 3, 4, 5, 6, 7, 8 };
+        const T expected[] = { 7, 8 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_left(b, e, 6);
+        assert(std::equal(std::begin(expected), std::end(expected), b, it));
+    }
+
+    // n == len
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_left(b, e, std::size(input));
+        assert(std::equal(std::begin(expected), std::end(expected), b, e));
+        assert(it == b);
+    }
+
+    // n > len
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_left(b, e, std::size(input) + 1);
+        assert(std::equal(std::begin(expected), std::end(expected), b, e));
+        assert(it == b);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, forward_iterator<int*>>();
+    test<int, bidirectional_iterator<int*>>();
+    test<int, random_access_iterator<int*>>();
+    test<int, int*>();
+    test<MoveOnly, forward_iterator<MoveOnly*>>();
+    test<MoveOnly, bidirectional_iterator<MoveOnly*>>();
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+
+    static_assert(test<int, forward_iterator<int*>>());
+    static_assert(test<int, bidirectional_iterator<int*>>());
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, forward_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, bidirectional_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/shift_right.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/shift_right.pass.cpp
new file mode 100644
index 0000000..d92387c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.shift/shift_right.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<class ForwardIterator>
+// constexpr ForwardIterator
+//   shift_right(ForwardIterator first, ForwardIterator last,
+//               typename iterator_traits<ForwardIterator>::difference_type n);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+constexpr bool test()
+{
+    int orig[] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+
+    for (int n = 0; n <= 15; ++n) {
+        for (int k = 0; k <= n+2; ++k) {
+            std::copy(orig, orig+n, work);
+            Iter it = std::shift_right(Iter(work), Iter(work+n), k);
+            if (k < n) {
+                assert(it == Iter(work+k));
+                assert(std::equal(orig, orig+n-k, work+k, work+n));
+            } else {
+                assert(it == Iter(work+n));
+                assert(std::equal(orig, orig+n, work, work+n));
+            }
+        }
+    }
+
+    // n == 0
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_right(b, e, 0);
+        assert(std::equal(std::begin(expected), std::end(expected), it, e));
+    }
+
+    // n > 0 && n < len
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_right(b, e, 1);
+        assert(std::equal(std::begin(expected), std::end(expected), it, e));
+    }
+    {
+        T input[]          = { 1, 2, 3, 4, 5, 6, 7, 8 };
+        const T expected[] = { 1, 2, 3, 4, 5, 6 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_right(b, e, 2);
+        assert(std::equal(std::begin(expected), std::end(expected), it, e));
+    }
+    {
+        T input[]          = { 1, 2, 3, 4, 5, 6, 7, 8 };
+        const T expected[] = { 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_right(b, e, 6);
+        assert(std::equal(std::begin(expected), std::end(expected), it, e));
+    }
+
+    // n == len
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_right(b, e, std::size(input));
+        assert(std::equal(std::begin(expected), std::end(expected), b, e));
+        assert(it == e);
+    }
+
+    // n > len
+    {
+        T input[]          = { 0, 1, 2 };
+        const T expected[] = { 0, 1, 2 };
+        Iter b = Iter(std::begin(input));
+        Iter e = Iter(std::end(input));
+        Iter it = std::shift_right(b, e, std::size(input) + 1);
+        assert(std::equal(std::begin(expected), std::end(expected), b, e));
+        assert(it == e);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, forward_iterator<int*>>();
+    test<int, bidirectional_iterator<int*>>();
+    test<int, random_access_iterator<int*>>();
+    test<int, int*>();
+    test<MoveOnly, forward_iterator<MoveOnly*>>();
+    test<MoveOnly, bidirectional_iterator<MoveOnly*>>();
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+
+    static_assert(test<int, forward_iterator<int*>>());
+    static_assert(test<int, bidirectional_iterator<int*>>());
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, forward_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, bidirectional_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/iter_swap.pass.cpp
new file mode 100644
index 0000000..b3a9f5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/iter_swap.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<Iterator Iter1, Iterator Iter2>
+//   requires HasSwap<Iter1::reference, Iter2::reference>
+//   void
+//   iter_swap(Iter1 a, Iter2 b);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 17
+constexpr bool test_swap_constexpr()
+{
+    int i = 1;
+    int j = 2;
+    std::iter_swap(&i, &j);
+    return i == 2 && j == 1;
+}
+#endif // TEST_STD_VER > 17
+
+int main(int, char**)
+{
+    int i = 1;
+    int j = 2;
+    std::iter_swap(&i, &j);
+    assert(i == 2);
+    assert(j == 1);
+
+#if TEST_STD_VER > 17
+    static_assert(test_swap_constexpr());
+#endif // TEST_STD_VER > 17
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/ranges.swap_ranges.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/ranges.swap_ranges.pass.cpp
new file mode 100644
index 0000000..4895ef5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/ranges.swap_ranges.pass.cpp
@@ -0,0 +1,227 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2>
+//   requires indirectly_swappable<I1, I2>
+//   constexpr ranges::swap_ranges_result<I1, I2>
+//     ranges::swap_ranges(I1 first1, S1 last1, I2 first2, S2 last2);
+// template<input_range R1, input_range R2>
+//   requires indirectly_swappable<iterator_t<R1>, iterator_t<R2>>
+//   constexpr ranges::swap_ranges_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>>
+//     ranges::swap_ranges(R1&& r1, R2&& r2);
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "test_iterators.h"
+
+constexpr void test_different_lengths() {
+  using Expected = std::ranges::swap_ranges_result<int*, int*>;
+  int i[3] = {1, 2, 3};
+  int j[1] = {4};
+  std::same_as<Expected> auto r = std::ranges::swap_ranges(i, i + 3, j, j + 1);
+  assert(r.in1 == i + 1);
+  assert(r.in2 == j + 1);
+  assert(i[0] == 4);
+  assert(i[1] == 2);
+  assert(i[2] == 3);
+  assert(j[0] == 1);
+  std::same_as<Expected> auto r2 = std::ranges::swap_ranges(i, j);
+  assert(r2.in1 == i + 1);
+  assert(r2.in2 == j + 1);
+  assert(i[0] == 1);
+  assert(i[1] == 2);
+  assert(i[2] == 3);
+  assert(j[0] == 4);
+  std::same_as<Expected> auto r3 = std::ranges::swap_ranges(j, j + 1, i, i + 3);
+  assert(r3.in1 == j + 1);
+  assert(r3.in2 == i + 1);
+  assert(i[0] == 4);
+  assert(i[1] == 2);
+  assert(i[2] == 3);
+  assert(j[0] == 1);
+  std::same_as<Expected> auto r4 = std::ranges::swap_ranges(j, i);
+  assert(r4.in1 == j + 1);
+  assert(r4.in2 == i + 1);
+  assert(i[0] == 1);
+  assert(i[1] == 2);
+  assert(i[2] == 3);
+  assert(j[0] == 4);
+}
+
+constexpr void test_range() {
+  std::array r1 = {1, 2, 3};
+  std::array r2 = {4, 5, 6};
+
+
+  std::same_as<std::ranges::in_in_result<int*, int*>> auto r = std::ranges::swap_ranges(r1, r2);
+  assert(r.in1 == r1.end());
+  assert(r.in2 == r2.end());
+
+  assert((r1 == std::array{4, 5, 6}));
+  assert((r2 == std::array{1, 2, 3}));
+}
+
+constexpr void test_borrowed_input_range() {
+  {
+    int r1[] = {1, 2, 3};
+    int r2[] = {4, 5, 6};
+    std::ranges::swap_ranges(std::views::all(r1), r2);
+    assert(r1[0] == 4);
+    assert(r1[1] == 5);
+    assert(r1[2] == 6);
+    assert(r2[0] == 1);
+    assert(r2[1] == 2);
+    assert(r2[2] == 3);
+  }
+  {
+    int r1[] = {1, 2, 3};
+    int r2[] = {4, 5, 6};
+    std::ranges::swap_ranges(r1, std::views::all(r2));
+    assert(r1[0] == 4);
+    assert(r1[1] == 5);
+    assert(r1[2] == 6);
+    assert(r2[0] == 1);
+    assert(r2[1] == 2);
+    assert(r2[2] == 3);
+  }
+  {
+    int r1[] = {1, 2, 3};
+    int r2[] = {4, 5, 6};
+    std::ranges::swap_ranges(std::views::all(r1), std::views::all(r2));
+    assert(r1[0] == 4);
+    assert(r1[1] == 5);
+    assert(r1[2] == 6);
+    assert(r2[0] == 1);
+    assert(r2[1] == 2);
+    assert(r2[2] == 3);
+  }
+}
+
+constexpr void test_sentinel() {
+  int i[3] = {1, 2, 3};
+  int j[3] = {4, 5, 6};
+  using It = cpp17_input_iterator<int*>;
+  using Sent = sentinel_wrapper<It>;
+  using Expected = std::ranges::swap_ranges_result<It, It>;
+  std::same_as<Expected> auto r =
+      std::ranges::swap_ranges(It(i), Sent(It(i + 3)), It(j), Sent(It(j + 3)));
+  assert(base(r.in1) == i + 3);
+  assert(base(r.in2) == j + 3);
+  assert(i[0] == 4);
+  assert(i[1] == 5);
+  assert(i[2] == 6);
+  assert(j[0] == 1);
+  assert(j[1] == 2);
+  assert(j[2] == 3);
+}
+
+template <class Iter1, class Iter2>
+constexpr void test_iterators() {
+  using Expected = std::ranges::swap_ranges_result<Iter1, Iter2>;
+  int i[3] = {1, 2, 3};
+  int j[3] = {4, 5, 6};
+  std::same_as<Expected> auto r =
+      std::ranges::swap_ranges(Iter1(i), sentinel_wrapper(Iter1(i + 3)), Iter2(j), sentinel_wrapper(Iter2(j + 3)));
+  assert(base(r.in1) == i + 3);
+  assert(base(r.in2) == j + 3);
+  assert(i[0] == 4);
+  assert(i[1] == 5);
+  assert(i[2] == 6);
+  assert(j[0] == 1);
+  assert(j[1] == 2);
+  assert(j[2] == 3);
+}
+
+constexpr void test_rval_range() {
+  {
+    using Expected = std::ranges::swap_ranges_result<int*, std::ranges::dangling>;
+    std::array<int, 3> r = {1, 2, 3};
+    std::same_as<Expected> auto a = std::ranges::swap_ranges(r, std::array{4, 5, 6});
+    assert((r == std::array{4, 5, 6}));
+    assert(a.in1 == r.begin() + 3);
+  }
+  {
+    std::array<int, 3> r = {1, 2, 3};
+    using Expected = std::ranges::swap_ranges_result<std::ranges::dangling, int*>;
+    std::same_as<Expected> auto b = std::ranges::swap_ranges(std::array{4, 5, 6}, r);
+    assert((r == std::array{4, 5, 6}));
+    assert(b.in2 == r.begin() + 3);
+  }
+}
+
+template <class Out>
+constexpr void test_proxy_in_iterators() {
+  test_iterators<ProxyIterator<cpp20_input_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<forward_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<bidirectional_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<random_access_iterator<int*>>, Out>();
+  test_iterators<ProxyIterator<contiguous_iterator<int*>>, Out>();
+}
+
+constexpr bool test() {
+  test_range();
+
+  test_iterators<cpp20_input_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iterators<cpp20_input_iterator<int*>, forward_iterator<int*>>();
+  test_iterators<cpp20_input_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iterators<cpp20_input_iterator<int*>, random_access_iterator<int*>>();
+  test_iterators<cpp20_input_iterator<int*>, int*>();
+
+  test_iterators<forward_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iterators<forward_iterator<int*>, forward_iterator<int*>>();
+  test_iterators<forward_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iterators<forward_iterator<int*>, random_access_iterator<int*>>();
+  test_iterators<forward_iterator<int*>, int*>();
+
+  test_iterators<bidirectional_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, random_access_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, int*>();
+
+  test_iterators<random_access_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, forward_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, random_access_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, int*>();
+
+  test_iterators<int*, cpp20_input_iterator<int*>>();
+  test_iterators<int*, forward_iterator<int*>>();
+  test_iterators<int*, bidirectional_iterator<int*>>();
+  test_iterators<int*, random_access_iterator<int*>>();
+  test_iterators<int*, int*>();
+
+  test_proxy_in_iterators<ProxyIterator<cpp20_input_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<forward_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<bidirectional_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<random_access_iterator<int*>>>();
+  test_proxy_in_iterators<ProxyIterator<contiguous_iterator<int*>>>();
+
+  test_sentinel();
+  test_different_lengths();
+  test_borrowed_input_range();
+  test_rval_range();
+
+  return true;
+}
+
+static_assert(std::same_as<std::ranges::swap_ranges_result<int, char>, std::ranges::in_in_result<int, char>>);
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/swap_ranges.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/swap_ranges.pass.cpp
new file mode 100644
index 0000000..8bfbcd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.swap/swap_ranges.pass.cpp
@@ -0,0 +1,175 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter1, ForwardIterator Iter2>
+//   requires HasSwap<Iter1::reference, Iter2::reference>
+//   Iter2
+//   swap_ranges(Iter1 first1, Iter1 last1, Iter2 first2);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter1, class Iter2>
+void
+test()
+{
+    int i[3] = {1, 2, 3};
+    int j[3] = {4, 5, 6};
+    Iter2 r = std::swap_ranges(Iter1(i), Iter1(i+3), Iter2(j));
+    assert(base(r) == j+3);
+    assert(i[0] == 4);
+    assert(i[1] == 5);
+    assert(i[2] == 6);
+    assert(j[0] == 1);
+    assert(j[1] == 2);
+    assert(j[2] == 3);
+}
+
+#if TEST_STD_VER >= 11
+template<class Iter1, class Iter2>
+void
+test1()
+{
+    std::unique_ptr<int> i[3];
+    for (int k = 0; k < 3; ++k)
+        i[k].reset(new int(k+1));
+    std::unique_ptr<int> j[3];
+    for (int k = 0; k < 3; ++k)
+        j[k].reset(new int(k+4));
+    Iter2 r = std::swap_ranges(Iter1(i), Iter1(i+3), Iter2(j));
+    assert(base(r) == j+3);
+    assert(*i[0] == 4);
+    assert(*i[1] == 5);
+    assert(*i[2] == 6);
+    assert(*j[0] == 1);
+    assert(*j[1] == 2);
+    assert(*j[2] == 3);
+}
+#endif // TEST_STD_VER >= 11
+
+void test2()
+{
+    {
+    int src[2][2]      = {{0, 1}, {2, 3}};
+    decltype(src) dest = {{9, 8}, {7, 6}};
+
+    std::swap(src, dest);
+
+    assert ( src[0][0] == 9 );
+    assert ( src[0][1] == 8 );
+    assert ( src[1][0] == 7 );
+    assert ( src[1][1] == 6 );
+
+    assert ( dest[0][0] == 0 );
+    assert ( dest[0][1] == 1 );
+    assert ( dest[1][0] == 2 );
+    assert ( dest[1][1] == 3 );
+    }
+
+    {
+    int src[3][3]      = {{0, 1, 2}, {3, 4, 5}, {6, 7, 8}};
+    decltype(src) dest = {{9, 8, 7}, {6, 5, 4}, {3, 2, 1}};
+
+    std::swap(src, dest);
+
+    assert ( src[0][0] == 9 );
+    assert ( src[0][1] == 8 );
+    assert ( src[0][2] == 7 );
+    assert ( src[1][0] == 6 );
+    assert ( src[1][1] == 5 );
+    assert ( src[1][2] == 4 );
+    assert ( src[2][0] == 3 );
+    assert ( src[2][1] == 2 );
+    assert ( src[2][2] == 1 );
+
+    assert ( dest[0][0] == 0 );
+    assert ( dest[0][1] == 1 );
+    assert ( dest[0][2] == 2 );
+    assert ( dest[1][0] == 3 );
+    assert ( dest[1][1] == 4 );
+    assert ( dest[1][2] == 5 );
+    assert ( dest[2][0] == 6 );
+    assert ( dest[2][1] == 7 );
+    assert ( dest[2][2] == 8 );
+    }
+}
+
+#if TEST_STD_VER > 17
+constexpr bool test_swap_constexpr()
+{
+    int i[3] = {1, 2, 3};
+    int j[3] = {4, 5, 6};
+    std::swap_ranges(i, i+3, j);
+    return i[0] == 4 &&
+           i[1] == 5 &&
+           i[2] == 6 &&
+           j[0] == 1 &&
+           j[1] == 2 &&
+           j[2] == 3;
+}
+#endif // TEST_STD_VER > 17
+
+int main(int, char**)
+{
+    test<forward_iterator<int*>, forward_iterator<int*> >();
+    test<forward_iterator<int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<int*>, random_access_iterator<int*> >();
+    test<forward_iterator<int*>, int*>();
+
+    test<bidirectional_iterator<int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<int*>, int*>();
+
+    test<random_access_iterator<int*>, forward_iterator<int*> >();
+    test<random_access_iterator<int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<int*>, int*>();
+
+    test<int*, forward_iterator<int*> >();
+    test<int*, bidirectional_iterator<int*> >();
+    test<int*, random_access_iterator<int*> >();
+    test<int*, int*>();
+
+#if TEST_STD_VER >= 11
+    test1<forward_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<forward_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<bidirectional_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<random_access_iterator<std::unique_ptr<int>*>, forward_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<random_access_iterator<std::unique_ptr<int>*>, std::unique_ptr<int>*>();
+
+    test1<std::unique_ptr<int>*, forward_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, bidirectional_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, random_access_iterator<std::unique_ptr<int>*> >();
+    test1<std::unique_ptr<int>*, std::unique_ptr<int>*>();
+#endif // TEST_STD_VER >= 11
+
+#if TEST_STD_VER > 17
+    static_assert(test_swap_constexpr());
+#endif // TEST_STD_VER > 17
+
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/binary_transform.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/binary_transform.pass.cpp
new file mode 100644
index 0000000..7ad94e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/binary_transform.pass.cpp
@@ -0,0 +1,241 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, class OutIter,
+//          Callable<auto, const InIter1::value_type&, const InIter2::value_type&> BinaryOp>
+//   requires OutputIterator<OutIter, BinaryOp::result_type> && CopyConstructible<BinaryOp>
+// constexpr OutIter      // constexpr after C++17
+// transform(InIter1 first1, InIter1 last1, InIter2 first2, OutIter result, BinaryOp binary_op);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    const int ia[] = {1, 3, 6, 7};
+    const int ib[] = {2, 4, 7, 8};
+          int ic[] = {0, 0, 0, 0, 0}; // one bigger
+    const int expected[] = {3, 7, 13, 15};
+
+    auto it = std::transform(std::begin(ia), std::end(ia),
+                             std::begin(ib), std::begin(ic), std::plus<int>());
+
+    return it == (std::begin(ic) + std::size(ia))
+        && *it == 0 // don't overwrite the last value in the output array
+        && std::equal(std::begin(expected), std::end(expected), std::begin(ic), it)
+        ;
+    }
+#endif
+
+
+template<class InIter1, class InIter2, class OutIter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[sa] = {1, 2, 3, 4, 5};
+    OutIter r = std::transform(InIter1(ib), InIter1(ib+sa), InIter2(ia),
+                               OutIter(ib), std::minus<int>());
+    assert(base(r) == ib + sa);
+    assert(ib[0] == 1);
+    assert(ib[1] == 1);
+    assert(ib[2] == 1);
+    assert(ib[3] == 1);
+    assert(ib[4] == 1);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*>, int*>();
+
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*>, int*>();
+
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*>, int*>();
+
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*>, int*>();
+
+    test<cpp17_input_iterator<const int*>, const int*, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, const int*, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, const int*, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, const int*, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, const int*, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, const int*, int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, const int*, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, const int*, cpp17_input_iterator<int*> >();
+    test<forward_iterator<const int*>, const int*, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, const int*, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, const int*, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, const int*, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, const int*, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, const int*, cpp17_input_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, const int*, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, const int*, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, const int*, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, const int*, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, const int*, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, const int*, cpp17_input_iterator<int*> >();
+    test<random_access_iterator<const int*>, const int*, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, const int*, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, const int*, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, const int*, int*>();
+
+    test<const int*, cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<const int*, cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<const int*, cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<const int*, cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<const int*, cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<const int*, cpp17_input_iterator<const int*>, int*>();
+
+    test<const int*, forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<const int*, forward_iterator<const int*>, forward_iterator<int*> >();
+    test<const int*, forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<const int*, forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<const int*, forward_iterator<const int*>, int*>();
+
+    test<const int*, bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<const int*, bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<const int*, bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<const int*, bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<const int*, bidirectional_iterator<const int*>, int*>();
+
+    test<const int*, random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<const int*, random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<const int*, random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<const int*, random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<const int*, random_access_iterator<const int*>, int*>();
+
+    test<const int*, const int*, cpp17_output_iterator<int*> >();
+    test<const int*, const int*, cpp17_input_iterator<int*> >();
+    test<const int*, const int*, forward_iterator<int*> >();
+    test<const int*, const int*, bidirectional_iterator<int*> >();
+    test<const int*, const int*, random_access_iterator<int*> >();
+    test<const int*, const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/ranges.transform.binary.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/ranges.transform.binary.pass.cpp
new file mode 100644
index 0000000..3031646
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/ranges.transform.binary.pass.cpp
@@ -0,0 +1,426 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          weakly_incrementable O, copy_constructible F, class Proj1 = identity,
+//          class Proj2 = identity>
+//   requires indirectly_writable<O, indirect_result_t<F&, projected<I1, Proj1>,
+//                                          projected<I2, Proj2>>>
+//   constexpr ranges::binary_transform_result<I1, I2, O>
+//     ranges::transform(I1 first1, S1 last1, I2 first2, S2 last2, O result,
+//                       F binary_op, Proj1 proj1 = {}, Proj2 proj2 = {});
+// template<input_range R1, input_range R2, weakly_incrementable O,
+//          copy_constructible F, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_writable<O, indirect_result_t<F&, projected<iterator_t<R1>, Proj1>,
+//                                          projected<iterator_t<R2>, Proj2>>>
+//   constexpr ranges::binary_transform_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
+//     ranges::transform(R1&& r1, R2&& r2, O result,
+//                       F binary_op, Proj1 proj1 = {}, Proj2 proj2 = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "test_iterators.h"
+#include "almost_satisfies_types.h"
+
+struct BinaryFunc {
+  int operator()(int, int);
+};
+
+template <class Range>
+concept HasTranformR = requires(Range r, int* out) { std::ranges::transform(r, r, out, BinaryFunc{}); };
+
+static_assert(HasTranformR<std::array<int, 1>>);
+static_assert(!HasTranformR<int>);
+static_assert(!HasTranformR<InputRangeNotDerivedFrom>);
+static_assert(!HasTranformR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasTranformR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasTranformR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasTranformR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = It>
+concept HasTransformIt =
+    requires(It it, Sent sent, int* out) { std::ranges::transform(it, sent, it, sent, out, BinaryFunc{}); };
+static_assert(HasTransformIt<int*>);
+static_assert(!HasTransformIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasTransformIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasTransformIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasTransformIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasTransformIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It>
+concept HasTransformOut = requires(int* it, int* sent, It out, std::array<int, 2> range) {
+  std::ranges::transform(it, sent, it, sent, out, BinaryFunc{});
+  std::ranges::transform(range, range, out, BinaryFunc{});
+};
+static_assert(HasTransformOut<int*>);
+static_assert(!HasTransformOut<WeaklyIncrementableNotMovable>);
+
+// check indirectly_readable
+static_assert(HasTransformOut<char*>);
+static_assert(!HasTransformOut<int**>);
+
+struct MoveOnlyFunctor {
+  MoveOnlyFunctor(const MoveOnlyFunctor&) = delete;
+  MoveOnlyFunctor(MoveOnlyFunctor&&)      = default;
+  int operator()(int, int);
+};
+
+template <class Func>
+concept HasTransformFuncBinary = requires(int* it, int* sent, int* out, std::array<int, 2> range, Func func) {
+  std::ranges::transform(it, sent, it, sent, out, func);
+  std::ranges::transform(range, range, out, func);
+};
+static_assert(HasTransformFuncBinary<BinaryFunc>);
+static_assert(!HasTransformFuncBinary<MoveOnlyFunctor>);
+
+static_assert(std::is_same_v<std::ranges::binary_transform_result<int, long, char>,
+                             std::ranges::in_in_out_result<int, long, char>>);
+
+// clang-format off
+template <class In1, class In2, class Out, class Sent1, class Sent2>
+constexpr bool test_iterators() {
+  { // simple
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[] = {5, 4, 3, 2, 1};
+      int c[5];
+
+      std::same_as<std::ranges::in_in_out_result<In1, In2, Out>> decltype(auto) ret = std::ranges::transform(
+          In1(a), Sent1(In1(a + 5)), In2(b), Sent2(In2(b + 5)), Out(c), [](int i, int j) { return i + j; });
+
+      assert((std::to_array(c) == std::array{6, 6, 6, 6, 6}));
+      assert(base(ret.in1) == a + 5);
+      assert(base(ret.in2) == b + 5);
+      assert(base(ret.out) == c + 5);
+    }
+
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[] = {5, 4, 3, 2, 1};
+      int c[5];
+
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a + 5)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b + 5)));
+
+      std::same_as<std::ranges::in_in_out_result<In1, In2, Out>> decltype(auto) ret = std::ranges::transform(
+          range1, range2, Out(c), [](int i, int j) { return i + j; });
+
+      assert((std::to_array(c) == std::array{6, 6, 6, 6, 6}));
+      assert(base(ret.in1) == a + 5);
+      assert(base(ret.in2) == b + 5);
+      assert(base(ret.out) == c + 5);
+    }
+  }
+
+  { // first range empty
+    {
+      int a[] = {};
+      int b[] = {5, 4, 3, 2, 1};
+      int c[5];
+
+      auto ret = std::ranges::transform(
+          In1(a), Sent1(In1(a)), In2(b), Sent2(In2(b + 5)), Out(c), [](int i, int j) { return i + j; });
+
+      assert(base(ret.in1) == a);
+      assert(base(ret.in2) == b);
+      assert(base(ret.out) == c);
+    }
+
+    {
+      int a[] = {};
+      int b[] = {5, 4, 3, 2, 1};
+      int c[5];
+
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b + 5)));
+
+      auto ret = std::ranges::transform(range1, range2, Out(c), [](int i, int j) { return i + j; });
+
+      assert(base(ret.in1) == a);
+      assert(base(ret.in2) == b);
+      assert(base(ret.out) == c);
+    }
+  }
+
+  { // second range empty
+    {
+      int a[] = {5, 4, 3, 2, 1};
+      int b[] = {};
+      int c[5];
+
+      auto ret = std::ranges::transform(
+          In1(a), Sent1(In1(a + 5)), In2(b), Sent2(In2(b)), Out(c), [](int i, int j) { return i + j; });
+
+      assert(base(ret.in1) == a);
+      assert(base(ret.in2) == b);
+      assert(base(ret.out) == c);
+    }
+
+    {
+      int a[] = {5, 4, 3, 2, 1};
+      int b[] = {};
+      int c[5];
+
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a + 5)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b)));
+
+      auto ret = std::ranges::transform(range1, range2, Out(c), [](int i, int j) { return i + j; });
+
+      assert(base(ret.in1) == a);
+      assert(base(ret.in2) == b);
+      assert(base(ret.out) == c);
+    }
+  }
+
+  { // both ranges empty
+    {
+      int a[] = {};
+      int b[] = {};
+      int c[5];
+
+      auto ret = std::ranges::transform(
+          In1(a), Sent1(In1(a)), In2(b), Sent2(In2(b)), Out(c), [](int i, int j) { return i + j; });
+
+      assert(base(ret.in1) == a);
+      assert(base(ret.in2) == b);
+      assert(base(ret.out) == c);
+    }
+
+    {
+      int a[] = {};
+      int b[] = {};
+      int c[5];
+
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b)));
+
+      auto ret = std::ranges::transform(range1, range2, Out(c), [](int i, int j) { return i + j; });
+
+      assert(base(ret.in1) == a);
+      assert(base(ret.in2) == b);
+      assert(base(ret.out) == c);
+    }
+  }
+
+  { // first range one element
+    {
+      int a[] = {2};
+      int b[] = {5, 4, 3, 2, 1};
+      int c[5];
+
+      auto ret = std::ranges::transform(
+          In1(a), Sent1(In1(a + 1)), In2(b), Sent2(In2(b + 5)), Out(c), [](int i, int j) { return i + j; });
+
+      assert(c[0] == 7);
+      assert(base(ret.in1) == a + 1);
+      assert(base(ret.in2) == b + 1);
+      assert(base(ret.out) == c + 1);
+    }
+
+    {
+      int a[] = {2};
+      int b[] = {5, 4, 3, 2, 1};
+      int c[5];
+
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a + 1)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b + 5)));
+
+      auto ret = std::ranges::transform(range1, range2, Out(c), [](int i, int j) { return i + j; });
+
+      assert(c[0] == 7);
+      assert(base(ret.in1) == a + 1);
+      assert(base(ret.in2) == b + 1);
+      assert(base(ret.out) == c + 1);
+    }
+  }
+
+  { // second range contains one element
+    {
+      int a[] = {5, 4, 3, 2, 1};
+      int b[] = {4};
+      int c[5];
+
+      auto ret = std::ranges::transform(
+          In1(a), Sent1(In1(a + 5)), In2(b), Sent2(In2(b + 1)), Out(c), [](int i, int j) { return i + j; });
+
+      assert(c[0] == 9);
+      assert(base(ret.in1) == a + 1);
+      assert(base(ret.in2) == b + 1);
+      assert(base(ret.out) == c + 1);
+    }
+
+    {
+      int a[] = {5, 4, 3, 2, 1};
+      int b[] = {4};
+      int c[5];
+
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a + 5)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b + 1)));
+
+      auto ret = std::ranges::transform(range1, range2, Out(c), [](int i, int j) { return i + j; });
+
+      assert(c[0] == 9);
+      assert(base(ret.in1) == a + 1);
+      assert(base(ret.in2) == b + 1);
+      assert(base(ret.out) == c + 1);
+    }
+  }
+
+  { // check that the transform function and projection call counts are correct
+    {
+      int predCount = 0;
+      int proj1Count = 0;
+      int proj2Count = 0;
+      auto pred = [&](int, int) { ++predCount; return 1; };
+      auto proj1 = [&](int) { ++proj1Count; return 0; };
+      auto proj2 = [&](int) { ++proj2Count; return 0; };
+      int a[] = {1, 2, 3, 4};
+      int b[] = {1, 2, 3, 4};
+      std::array<int, 4> c;
+      std::ranges::transform(In1(a), Sent1(In1(a + 4)), In2(b), Sent2(In2(b + 4)), Out(c.data()), pred, proj1, proj2);
+      assert(predCount == 4);
+      assert(proj1Count == 4);
+      assert(proj2Count == 4);
+      assert((c == std::array{1, 1, 1, 1}));
+    }
+    {
+      int predCount = 0;
+      int proj1Count = 0;
+      int proj2Count = 0;
+      auto pred = [&](int, int) { ++predCount; return 1; };
+      auto proj1 = [&](int) { ++proj1Count; return 0; };
+      auto proj2 = [&](int) { ++proj2Count; return 0; };
+      int a[] = {1, 2, 3, 4};
+      int b[] = {1, 2, 3, 4};
+      std::array<int, 4> c;
+      auto range1 = std::ranges::subrange(In1(a), Sent1(In1(a + 4)));
+      auto range2 = std::ranges::subrange(In2(b), Sent2(In2(b + 4)));
+      std::ranges::transform(range1, range2, Out(c.data()), pred, proj1, proj2);
+      assert(predCount == 4);
+      assert(proj1Count == 4);
+      assert(proj2Count == 4);
+      assert((c == std::array{1, 1, 1, 1}));
+    }
+  }
+
+  return true;
+}
+// clang-format on
+
+template <class In2, class Out, class Sent2 = In2>
+constexpr void test_iterator_in1() {
+  test_iterators<cpp17_input_iterator<int*>, In2, Out, sentinel_wrapper<cpp17_input_iterator<int*>>, Sent2>();
+  test_iterators<cpp20_input_iterator<int*>, In2, Out, sentinel_wrapper<cpp20_input_iterator<int*>>, Sent2>();
+  test_iterators<forward_iterator<int*>, In2, Out, forward_iterator<int*>, Sent2>();
+  test_iterators<bidirectional_iterator<int*>, In2, Out, bidirectional_iterator<int*>, Sent2>();
+  test_iterators<random_access_iterator<int*>, In2, Out, random_access_iterator<int*>, Sent2>();
+  test_iterators<contiguous_iterator<int*>, In2, Out, contiguous_iterator<int*>, Sent2>();
+  test_iterators<int*, In2, Out, int*, Sent2>();
+  // static_asserting here to avoid hitting the constant evaluation step limit
+  static_assert(test_iterators<cpp17_input_iterator<int*>, In2, Out, sentinel_wrapper<cpp17_input_iterator<int*>>, Sent2>());
+  static_assert(test_iterators<cpp20_input_iterator<int*>, In2, Out, sentinel_wrapper<cpp20_input_iterator<int*>>, Sent2>());
+  static_assert(test_iterators<forward_iterator<int*>, In2, Out, forward_iterator<int*>, Sent2>());
+  static_assert(test_iterators<bidirectional_iterator<int*>, In2, Out, bidirectional_iterator<int*>, Sent2>());
+  static_assert(test_iterators<random_access_iterator<int*>, In2, Out, random_access_iterator<int*>, Sent2>());
+  static_assert(test_iterators<contiguous_iterator<int*>, In2, Out, contiguous_iterator<int*>, Sent2>());
+  static_assert(test_iterators<int*, In2, Out, int*, Sent2>());
+}
+
+template <class Out>
+void test_iterators_in1_in2() {
+  test_iterator_in1<cpp17_input_iterator<int*>, Out, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterator_in1<cpp20_input_iterator<int*>, Out, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterator_in1<forward_iterator<int*>, Out>();
+  test_iterator_in1<bidirectional_iterator<int*>, Out>();
+  test_iterator_in1<random_access_iterator<int*>, Out>();
+  test_iterator_in1<contiguous_iterator<int*>, Out>();
+  test_iterator_in1<int*, Out>();
+}
+
+constexpr bool test() {
+  { // check that std::ranges::dangling is returned properly
+    {
+      int b[] = {2, 5, 4, 3, 1};
+      std::array<int, 5> c;
+      std::same_as<std::ranges::in_in_out_result<std::ranges::dangling, int*, int*>> auto ret =
+          std::ranges::transform(std::array{1, 2, 3, 5, 4}, b, c.data(), [](int i, int j) { return i * j; });
+      assert((c == std::array{2, 10, 12, 15, 4}));
+      assert(ret.in2 == b + 5);
+      assert(ret.out == c.data() + c.size());
+    }
+    {
+      int a[] = {2, 5, 4, 3, 1, 4, 5, 6};
+      std::array<int, 8> c;
+      std::same_as<std::ranges::in_in_out_result<int*, std::ranges::dangling, int*>> auto ret =
+          std::ranges::transform(a, std::array{1, 2, 3, 5, 4, 5, 6, 7}, c.data(), [](int i, int j) { return i * j; });
+      assert((c == std::array{2, 10, 12, 15, 4, 20, 30, 42}));
+      assert(ret.in1 == a + 8);
+      assert(ret.out == c.data() + c.size());
+    }
+    {
+      std::array<int, 3> c;
+      std::same_as<std::ranges::in_in_out_result<std::ranges::dangling, std::ranges::dangling, int*>> auto ret =
+          std::ranges::transform(std::array{4, 4, 4}, std::array{4, 4, 4}, c.data(), [](int i, int j) { return i * j; });
+      assert((c == std::array{16, 16, 16}));
+      assert(ret.out == c.data() + c.size());
+    }
+  }
+
+  { // check that returning another type from the projection works
+    {
+      struct S { int i; int other; };
+      S a[] = { S{0, 0}, S{1, 0}, S{3, 0}, S{10, 0} };
+      S b[] = { S{0, 10}, S{1, 20}, S{3, 30}, S{10, 40} };
+      std::array<int, 4> c;
+      std::ranges::transform(a, a + 4, b, b + 4, c.begin(), [](S s1, S s2) { return s1.i + s2.other; });
+      assert((c == std::array{10, 21, 33, 50}));
+    }
+    {
+      struct S { int i; int other; };
+      S a[] = { S{0, 0}, S{1, 0}, S{3, 0}, S{10, 0} };
+      S b[] = { S{0, 10}, S{1, 20}, S{3, 30}, S{10, 40} };
+      std::array<int, 4> c;
+      std::ranges::transform(a, b, c.begin(), [](S s1, S s2) { return s1.i + s2.other; });
+      assert((c == std::array{10, 21, 33, 50}));
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S a[] = { S{1}, S{3}, S{2} };
+    S b[] = { S{2}, S{5}, S{3} };
+    std::array<int, 3> c;
+    auto ret = std::ranges::transform(a, b, c.data(), [](int i, int j) { return i + j + 2; }, &S::i, &S::i);
+    assert((c == std::array{5, 10, 7}));
+    assert(ret.out == c.data() + 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test_iterators_in1_in2<cpp17_output_iterator<int*>>();
+  test_iterators_in1_in2<cpp20_output_iterator<int*>>();
+  test_iterators_in1_in2<forward_iterator<int*>>();
+  test_iterators_in1_in2<bidirectional_iterator<int*>>();
+  test_iterators_in1_in2<random_access_iterator<int*>>();
+  test_iterators_in1_in2<contiguous_iterator<int*>>();
+  test_iterators_in1_in2<int*>();
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/ranges.transform.unary.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/ranges.transform.unary.pass.cpp
new file mode 100644
index 0000000..b83f9cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/ranges.transform.unary.pass.cpp
@@ -0,0 +1,249 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O,
+//          copy_constructible F, class Proj = identity>
+//   requires indirectly_writable<O, indirect_result_t<F&, projected<I, Proj>>>
+//   constexpr ranges::unary_transform_result<I, O>
+//     ranges::transform(I first1, S last1, O result, F op, Proj proj = {});
+// template<input_range R, weakly_incrementable O, copy_constructible F,
+//          class Proj = identity>
+//   requires indirectly_writable<O, indirect_result_t<F&, projected<iterator_t<R>, Proj>>>
+//   constexpr ranges::unary_transform_result<borrowed_iterator_t<R>, O>
+//     ranges::transform(R&& r, O result, F op, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "test_iterators.h"
+#include "almost_satisfies_types.h"
+
+template <class Range>
+concept HasTranformR = requires(Range r, int* out) { std::ranges::transform(r, out, std::identity{}); };
+
+static_assert(HasTranformR<std::array<int, 1>>);
+static_assert(!HasTranformR<int>);
+static_assert(!HasTranformR<InputRangeNotDerivedFrom>);
+static_assert(!HasTranformR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasTranformR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasTranformR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasTranformR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = It>
+concept HasTransformIt =
+    requires(It it, Sent sent, int* out) { std::ranges::transform(it, sent, out, std::identity{}); };
+
+static_assert(HasTransformIt<int*>);
+static_assert(!HasTransformIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasTransformIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasTransformIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasTransformIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasTransformIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It>
+concept HasTransformOut = requires(int* it, int* sent, It out, std::array<int, 2> range) {
+  std::ranges::transform(it, sent, out, std::identity{});
+  std::ranges::transform(range, out, std::identity{});
+};
+static_assert(HasTransformOut<int*>);
+static_assert(!HasTransformOut<WeaklyIncrementableNotMovable>);
+
+// check indirectly_readable
+static_assert(HasTransformOut<char*>);
+static_assert(!HasTransformOut<int**>);
+
+struct MoveOnlyFunctor {
+  MoveOnlyFunctor(const MoveOnlyFunctor&) = delete;
+  MoveOnlyFunctor(MoveOnlyFunctor&&)      = default;
+  int operator()(int);
+};
+
+template <class Func>
+concept HasTransformFuncUnary = requires(int* it, int* sent, int* out, std::array<int, 2> range, Func func) {
+  std::ranges::transform(it, sent, out, func);
+  std::ranges::transform(range, out, func);
+};
+static_assert(HasTransformFuncUnary<std::identity>);
+static_assert(!HasTransformFuncUnary<MoveOnlyFunctor>);
+
+static_assert(std::is_same_v<std::ranges::unary_transform_result<int, long>, std::ranges::in_out_result<int, long>>);
+
+// clang-format off
+template <class In1, class Out, class Sent1>
+constexpr bool test_iterators() {
+  { // simple
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[5];
+      std::same_as<std::ranges::in_out_result<In1, Out>> decltype(auto) ret =
+        std::ranges::transform(In1(a), Sent1(In1(a + 5)), Out(b), [](int i) { return i * 2; });
+      assert((std::to_array(b) == std::array{2, 4, 6, 8, 10}));
+      assert(base(ret.in) == a + 5);
+      assert(base(ret.out) == b + 5);
+    }
+
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[5];
+      auto range = std::ranges::subrange(In1(a), Sent1(In1(a + 5)));
+      std::same_as<std::ranges::in_out_result<In1, Out>> decltype(auto) ret =
+        std::ranges::transform(range, Out(b), [](int i) { return i * 2; });
+      assert((std::to_array(b) == std::array{2, 4, 6, 8, 10}));
+      assert(base(ret.in) == a + 5);
+      assert(base(ret.out) == b + 5);
+    }
+  }
+
+  { // first range empty
+    {
+      int a[] = {};
+      int b[5];
+      auto ret = std::ranges::transform(In1(a), Sent1(In1(a)), Out(b), [](int i) { return i * 2; });
+      assert(base(ret.in) == a);
+      assert(base(ret.out) == b);
+    }
+
+    {
+      int a[] = {};
+      int b[5];
+      auto range = std::ranges::subrange(In1(a), Sent1(In1(a)));
+      auto ret = std::ranges::transform(range, Out(b), [](int i) { return i * 2; });
+      assert(base(ret.in) == a);
+      assert(base(ret.out) == b);
+    }
+  }
+
+  { // one element range
+    {
+      int a[] = {2};
+      int b[5];
+      auto ret = std::ranges::transform(In1(a), Sent1(In1(a + 1)), Out(b), [](int i) { return i * 2; });
+      assert(b[0] == 4);
+      assert(base(ret.in) == a + 1);
+      assert(base(ret.out) == b + 1);
+    }
+
+    {
+      int a[] = {2};
+      int b[5];
+      auto range = std::ranges::subrange(In1(a), Sent1(In1(a + 1)));
+      auto ret = std::ranges::transform(range, Out(b), [](int i) { return i * 2; });
+      assert(b[0] == 4);
+      assert(base(ret.in) == a + 1);
+      assert(base(ret.out) == b + 1);
+    }
+  }
+
+  { // check that the transform function and projection call counts are correct
+    {
+      int predCount = 0;
+      int projCount = 0;
+      auto pred = [&](int) { ++predCount; return 1; };
+      auto proj = [&](int) { ++projCount; return 0; };
+      int a[] = {1, 2, 3, 4};
+      std::array<int, 4> c;
+      std::ranges::transform(In1(a), Sent1(In1(a + 4)), Out(c.data()), pred, proj);
+      assert(predCount == 4);
+      assert(projCount == 4);
+      assert((c == std::array{1, 1, 1, 1}));
+    }
+    {
+      int predCount = 0;
+      int projCount = 0;
+      auto pred = [&](int) { ++predCount; return 1; };
+      auto proj = [&](int) { ++projCount; return 0; };
+      int a[] = {1, 2, 3, 4};
+      std::array<int, 4> c;
+      auto range = std::ranges::subrange(In1(a), Sent1(In1(a + 4)));
+      std::ranges::transform(range, Out(c.data()), pred, proj);
+      assert(predCount == 4);
+      assert(projCount == 4);
+      assert((c == std::array{1, 1, 1, 1}));
+    }
+  }
+  return true;
+}
+// clang-format on
+
+template <class Out>
+constexpr void test_iterator_in1() {
+  test_iterators<cpp17_input_iterator<int*>, Out, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<cpp20_input_iterator<int*>, Out, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>, Out, forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, Out, bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, Out, random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>, Out, contiguous_iterator<int*>>();
+  test_iterators<int*, Out, int*>();
+  // static_asserting here to avoid hitting the constant evaluation step limit
+  static_assert(test_iterators<cpp17_input_iterator<int*>, Out, sentinel_wrapper<cpp17_input_iterator<int*>>>());
+  static_assert(test_iterators<cpp20_input_iterator<int*>, Out, sentinel_wrapper<cpp20_input_iterator<int*>>>());
+  static_assert(test_iterators<forward_iterator<int*>, Out, forward_iterator<int*>>());
+  static_assert(test_iterators<bidirectional_iterator<int*>, Out, bidirectional_iterator<int*>>());
+  static_assert(test_iterators<random_access_iterator<int*>, Out, random_access_iterator<int*>>());
+  static_assert(test_iterators<contiguous_iterator<int*>, Out, contiguous_iterator<int*>>());
+  static_assert(test_iterators<int*, Out, int*>());
+}
+
+constexpr bool test() {
+  { // check that std::ranges::dangling is returned properly
+    std::array<int, 5> b;
+    std::same_as<std::ranges::in_out_result<std::ranges::dangling, int*>> auto ret =
+        std::ranges::transform(std::array{1, 2, 3, 5, 4}, b.data(), [](int i) { return i * i; });
+    assert((b == std::array{1, 4, 9, 25, 16}));
+    assert(ret.out == b.data() + b.size());
+  }
+
+  { // check that returning another type from the projection works
+    {
+      struct S { int i; int other; };
+      S a[] = { S{0, 0}, S{1, 0}, S{3, 0}, S{10, 0} };
+      std::array<int, 4> b;
+      std::ranges::transform(a, a + 4, b.begin(), [](S s) { return s.i; });
+      assert((b == std::array{0, 1, 3, 10}));
+    }
+    {
+      struct S { int i; int other; };
+      S a[] = { S{0, 0}, S{1, 0}, S{3, 0}, S{10, 0} };
+      std::array<int, 4> b;
+      std::ranges::transform(a, b.begin(), [](S s) { return s.i; });
+      assert((b == std::array{0, 1, 3, 10}));
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S a[] = { S{1}, S{3}, S{2} };
+    std::array<int, 3> b;
+    auto ret = std::ranges::transform(a, b.data(), [](int i) { return i; }, &S::i);
+    assert((b == std::array{1, 3, 2}));
+    assert(ret.out == b.data() + 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test_iterator_in1<cpp17_output_iterator<int*>>();
+  test_iterator_in1<cpp20_output_iterator<int*>>();
+  test_iterator_in1<forward_iterator<int*>>();
+  test_iterator_in1<bidirectional_iterator<int*>>();
+  test_iterator_in1<random_access_iterator<int*>>();
+  test_iterator_in1<contiguous_iterator<int*>>();
+  test_iterator_in1<int*>();
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/unary_transform.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/unary_transform.pass.cpp
new file mode 100644
index 0000000..8cf9667
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.transform/unary_transform.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, class OutIter,
+//          Callable<auto, const InIter::value_type&> Op>
+//   requires OutputIterator<OutIter, Op::result_type> && CopyConstructible<Op>
+// constexpr OutIter      // constexpr after C++17
+//   transform(InIter first, InIter last, OutIter result, Op op);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+TEST_CONSTEXPR int plusOne(int v) { return v + 1; }
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int ib[] = {0, 0, 0, 0, 0}; // one bigger
+    const int expected[] = {2, 4, 7, 8};
+
+    auto it = std::transform(std::begin(ia), std::end(ia), std::begin(ib), plusOne);
+
+    return it == (std::begin(ib) + std::size(ia))
+        && *it == 0 // don't overwrite the last value in the output array
+        && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[sa] = {0};
+    OutIter r = std::transform(InIter(ia), InIter(ia+sa),
+                               OutIter(ib), plusOne);
+    assert(base(r) == ib + sa);
+    assert(ib[0] == 1);
+    assert(ib[1] == 2);
+    assert(ib[2] == 3);
+    assert(ib[3] == 4);
+    assert(ib[4] == 5);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, cpp17_input_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/ranges_unique.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/ranges_unique.pass.cpp
new file mode 100644
index 0000000..67a8462
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/ranges_unique.pass.cpp
@@ -0,0 +1,247 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<permutable I, sentinel_for<I> S, class Proj = identity,
+//          indirect_equivalence_relation<projected<I, Proj>> C = ranges::equal_to>
+//   constexpr subrange<I> unique(I first, S last, C comp = {}, Proj proj = {});                    // Since C++20
+//
+// template<forward_range R, class Proj = identity,
+//          indirect_equivalence_relation<projected<iterator_t<R>, Proj>> C = ranges::equal_to>
+//   requires permutable<iterator_t<R>>
+//   constexpr borrowed_subrange_t<R>
+//     unique(R&& r, C comp = {}, Proj proj = {});                                                  // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+template <class Iter = int*, class Sent = int*, class Comp = std::ranges::equal_to, class Proj = std::identity>
+concept HasUniqueIter =
+    requires(Iter&& iter, Sent&& sent, Comp&& comp, Proj&& proj) {
+      std::ranges::unique(
+          std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Comp>(comp), std::forward<Proj>(proj));
+    };
+
+static_assert(HasUniqueIter<int*, int*>);
+
+// !permutable<I>
+static_assert(!HasUniqueIter<PermutableNotForwardIterator>);
+static_assert(!HasUniqueIter<PermutableNotSwappable>);
+
+// !sentinel_for<S, I>
+static_assert(!HasUniqueIter<int*, SentinelForNotSemiregular>);
+
+// !indirect_equivalence_relation<Comp, projected<I, Proj>>
+static_assert(!HasUniqueIter<int*, int*, ComparatorNotCopyable<int>>);
+
+template <class Range, class Comp = std::ranges::equal_to, class Proj = std::identity>
+concept HasUniqueRange =
+    requires(Range&& range, Comp&& comp, Proj&& proj) {
+      std::ranges::unique(std::forward<Range>(range), std::forward<Comp>(comp), std::forward<Proj>(proj));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasUniqueRange<R<int*>>);
+
+// !forward_range<R>
+static_assert(!HasUniqueRange<ForwardRangeNotDerivedFrom>);
+static_assert(!HasUniqueRange<ForwardRangeNotIncrementable>);
+
+// permutable<ranges::iterator_t<R>>
+static_assert(!HasUniqueRange<R<PermutableNotForwardIterator>>);
+static_assert(!HasUniqueRange<R<PermutableNotSwappable>>);
+
+// !indirect_equivalence_relation<Comp, projected<ranges::iterator_t<R>, Proj>>
+static_assert(!HasUniqueRange<R<int*>, ComparatorNotCopyable<int>>);
+
+template <class Iter, template <class> class SentWrapper, std::size_t N1, std::size_t N2>
+constexpr void testUniqueImpl(std::array<int, N1> input, std::array<int, N2> expected) {
+  using Sent = SentWrapper<Iter>;
+
+  // iterator overload
+  {
+    auto in = input;
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result =
+        std::ranges::unique(Iter{in.data()}, Sent{Iter{in.data() + in.size()}});
+    assert(std::ranges::equal(std::ranges::subrange<Iter>{Iter{in.data()}, result.begin()}, expected));
+    assert(base(result.end()) == in.data() + in.size());
+  }
+
+  // range overload
+  {
+    auto in = input;
+    std::ranges::subrange r{Iter{in.data()}, Sent{Iter{in.data() + in.size()}}};
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) result = std::ranges::unique(r);
+    assert(std::ranges::equal(std::ranges::subrange<Iter>{Iter{in.data()}, result.begin()}, expected));
+    assert(base(result.end()) == in.data() + in.size());
+  }
+}
+
+template <class Iter, template <class> class SentWrapper>
+constexpr void testImpl() {
+  // no consecutive elements
+  {
+    std::array in{1, 2, 3, 2, 1};
+    std::array expected{1, 2, 3, 2, 1};
+    testUniqueImpl<Iter, SentWrapper>(in, expected);
+  }
+
+  // one group of consecutive elements
+  {
+    std::array in{2, 3, 3, 3, 4, 3};
+    std::array expected{2, 3, 4, 3};
+    testUniqueImpl<Iter, SentWrapper>(in, expected);
+  }
+
+  // multiple groups of consecutive elements
+  {
+    std::array in{2, 3, 3, 3, 4, 3, 3, 5, 5, 5};
+    std::array expected{2, 3, 4, 3, 5};
+    testUniqueImpl<Iter, SentWrapper>(in, expected);
+  }
+
+  // all the same
+  {
+    std::array in{1, 1, 1, 1, 1, 1};
+    std::array expected{1};
+    testUniqueImpl<Iter, SentWrapper>(in, expected);
+  }
+
+  // empty range
+  {
+    std::array<int, 0> in{};
+    std::array<int, 0> expected{};
+    testUniqueImpl<Iter, SentWrapper>(in, expected);
+  }
+
+  // single element range
+    std::array in{1};
+    std::array expected{1};
+    testUniqueImpl<Iter, SentWrapper>(in, expected);
+}
+
+template <template <class> class SentWrapper>
+constexpr void withAllPermutationsOfIter() {
+  testImpl<forward_iterator<int*>, SentWrapper>();
+  testImpl<bidirectional_iterator<int*>, SentWrapper>();
+  testImpl<random_access_iterator<int*>, SentWrapper>();
+  testImpl<contiguous_iterator<int*>, SentWrapper>();
+  testImpl<int*, SentWrapper>();
+}
+
+constexpr bool test() {
+  withAllPermutationsOfIter<std::type_identity_t>();
+  withAllPermutationsOfIter<sentinel_wrapper>();
+
+  struct Data {
+    int data;
+  };
+
+  // Test custom comparator
+  {
+    std::array input{Data{4}, Data{8}, Data{8}, Data{8}};
+    std::array expected{Data{4}, Data{8}};
+    const auto comp = [](const Data& x, const Data& y) { return x.data == y.data; };
+
+    // iterator overload
+    {
+      auto in     = input;
+      auto result = std::ranges::unique(in.begin(), in.end(), comp);
+      assert(std::ranges::equal(in.begin(), result.begin(), expected.begin(), expected.end(), comp));
+      assert(base(result.end()) == in.end());
+    }
+
+    // range overload
+    {
+      auto in     = input;
+      auto result = std::ranges::unique(in, comp);
+      assert(std::ranges::equal(in.begin(), result.begin(), expected.begin(), expected.end(), comp));
+      assert(base(result.end()) == in.end());
+    }
+  }
+
+  // Test custom projection
+  {
+    std::array input{Data{4}, Data{8}, Data{8}, Data{8}};
+    std::array expected{Data{4}, Data{8}};
+
+    const auto proj = &Data::data;
+
+    // iterator overload
+    {
+      auto in     = input;
+      auto result = std::ranges::unique(in.begin(), in.end(), {}, proj);
+      assert(std::ranges::equal(in.begin(), result.begin(), expected.begin(), expected.end(), {}, proj, proj));
+      assert(base(result.end()) == in.end());
+    }
+
+    // range overload
+    {
+      auto in     = input;
+      auto result = std::ranges::unique(in, {}, proj);
+      assert(std::ranges::equal(in.begin(), result.begin(), expected.begin(), expected.end(), {}, proj, proj));
+      assert(base(result.end()) == in.end());
+    }
+  }
+
+  // Complexity: For nonempty ranges, exactly (last - first) - 1 applications of the corresponding predicate
+  // and no more than twice as many applications of any projection.
+  {
+    std::array input{1, 2, 3, 3, 3, 4, 3, 3, 5, 5, 6, 6, 1};
+    std::array expected{1, 2, 3, 4, 3, 5, 6, 1};
+    // iterator overload
+    {
+      auto in          = input;
+      int numberOfComp = 0;
+      int numberOfProj = 0;
+      auto result      = std::ranges::unique(
+          in.begin(),
+          in.end(),
+          counting_predicate{std::ranges::equal_to{}, numberOfComp},
+          counting_projection{numberOfProj});
+      assert(std::ranges::equal(in.begin(), result.begin(), expected.begin(), expected.end()));
+      assert(base(result.end()) == in.end());
+      assert(numberOfComp == in.size() - 1);
+      assert(numberOfProj <= static_cast<int>(2 * (in.size() - 1)));
+    }
+    // range overload
+    {
+      auto in          = input;
+      int numberOfComp = 0;
+      int numberOfProj = 0;
+      auto result      = std::ranges::unique(
+          in, counting_predicate{std::ranges::equal_to{}, numberOfComp}, counting_projection{numberOfProj});
+      assert(std::ranges::equal(in.begin(), result.begin(), expected.begin(), expected.end()));
+      assert(base(result.end()) == in.end());
+      assert(numberOfComp == in.size() - 1);
+      assert(numberOfProj <= static_cast<int>(2 * (in.size() - 1)));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/ranges_unique_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/ranges_unique_copy.pass.cpp
new file mode 100644
index 0000000..801385c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/ranges_unique_copy.pass.cpp
@@ -0,0 +1,449 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, weakly_incrementable O, class Proj = identity,
+//          indirect_equivalence_relation<projected<I, Proj>> C = ranges::equal_to>
+//   requires indirectly_copyable<I, O> &&
+//            (forward_iterator<I> ||
+//             (input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>) ||
+//             indirectly_copyable_storable<I, O>)
+//   constexpr unique_copy_result<I, O>
+//     unique_copy(I first, S last, O result, C comp = {}, Proj proj = {});                         // Since C++20
+//
+// template<input_range R, weakly_incrementable O, class Proj = identity,
+//          indirect_equivalence_relation<projected<iterator_t<R>, Proj>> C = ranges::equal_to>
+//   requires indirectly_copyable<iterator_t<R>, O> &&
+//            (forward_iterator<iterator_t<R>> ||
+//             (input_iterator<O> && same_as<range_value_t<R>, iter_value_t<O>>) ||
+//             indirectly_copyable_storable<iterator_t<R>, O>)
+//   constexpr unique_copy_result<borrowed_iterator_t<R>, O>
+//     unique_copy(R&& r, O result, C comp = {}, Proj proj = {});                                   // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+template <
+    class InIter  = int*,
+    class Sent    = int*,
+    class OutIter = int*,
+    class Comp    = std::ranges::equal_to,
+    class Proj    = std::identity>
+concept HasUniqueCopyIter =
+    requires(InIter&& in, Sent&& sent, OutIter&& out, Comp&& comp, Proj&& proj) {
+      std::ranges::unique_copy(
+          std::forward<InIter>(in),
+          std::forward<Sent>(sent),
+          std::forward<OutIter>(out),
+          std::forward<Comp>(comp),
+          std::forward<Proj>(proj));
+    };
+
+static_assert(HasUniqueCopyIter<int*, int*, int*>);
+
+// !input_iterator<I>
+static_assert(!HasUniqueCopyIter<InputIteratorNotDerivedFrom, sentinel_wrapper<InputIteratorNotDerivedFrom>>);
+
+// !sentinel_for<S, I>
+static_assert(!HasUniqueCopyIter<int*, SentinelForNotSemiregular>);
+
+// !weakly_incrementable<O>
+static_assert(!HasUniqueCopyIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// !indirect_equivalence_relation<Comp, projected<I, Proj>>
+static_assert(!HasUniqueCopyIter<int*, int*, int*, ComparatorNotCopyable<int>>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasUniqueCopyIter<const int*, const int*, const int*>);
+
+// forward_iterator<I>
+// !(input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+// !indirectly_copyable_storable<I, O>
+struct AssignableFromMoveOnly {
+  int data;
+  constexpr AssignableFromMoveOnly& operator=(MoveOnly const& m) {
+    data = m.get();
+    return *this;
+  }
+};
+static_assert(HasUniqueCopyIter<MoveOnly*, MoveOnly*, AssignableFromMoveOnly*>);
+// because:
+static_assert(std::forward_iterator<MoveOnly*>);
+static_assert(!std::same_as<std::iter_value_t<MoveOnly*>, std::iter_value_t<AssignableFromMoveOnly*>>);
+static_assert(!std::indirectly_copyable_storable<MoveOnly*, AssignableFromMoveOnly*>);
+
+// !forward_iterator<I>
+// (input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+// !indirectly_copyable_storable<I, O>
+struct CopyAssignableNotCopyConstructible {
+  int data;
+  constexpr CopyAssignableNotCopyConstructible(int i = 0) : data(i) {}
+  CopyAssignableNotCopyConstructible(const CopyAssignableNotCopyConstructible&)            = delete;
+  CopyAssignableNotCopyConstructible& operator=(const CopyAssignableNotCopyConstructible&) = default;
+  friend constexpr bool
+  operator==(CopyAssignableNotCopyConstructible const&, CopyAssignableNotCopyConstructible const&) = default;
+};
+
+using InputAndOutputIterator = cpp17_input_iterator<CopyAssignableNotCopyConstructible*>;
+static_assert(std::input_iterator<InputAndOutputIterator>);
+static_assert(std::output_iterator<InputAndOutputIterator, CopyAssignableNotCopyConstructible>);
+
+static_assert(
+    HasUniqueCopyIter<
+        cpp20_input_iterator<CopyAssignableNotCopyConstructible*>,
+        sentinel_wrapper<cpp20_input_iterator<CopyAssignableNotCopyConstructible*>>,
+        InputAndOutputIterator>);
+// because:
+static_assert(!std::forward_iterator< cpp20_input_iterator<CopyAssignableNotCopyConstructible*>>);
+static_assert(
+    std::input_iterator<InputAndOutputIterator> &&
+    std::same_as<std::iter_value_t<cpp20_input_iterator<CopyAssignableNotCopyConstructible*>>,
+                 std::iter_value_t<InputAndOutputIterator>>);
+static_assert(
+    !std::indirectly_copyable_storable<
+        cpp20_input_iterator<CopyAssignableNotCopyConstructible*>,
+        InputAndOutputIterator>);
+
+// !forward_iterator<I>
+// !(input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+// indirectly_copyable_storable<I, O>
+static_assert(
+    HasUniqueCopyIter<
+        cpp20_input_iterator<int*>,
+        sentinel_wrapper<cpp20_input_iterator<int*>>,
+        cpp20_output_iterator<int*>>);
+// because:
+static_assert(!std::forward_iterator<cpp20_input_iterator<int*>>);
+static_assert(!std::input_iterator<cpp20_output_iterator<int*>>);
+static_assert(std::indirectly_copyable_storable<cpp20_input_iterator<int*>, cpp20_output_iterator<int*>>);
+
+// !forward_iterator<I>
+// !(input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+// !indirectly_copyable_storable<I, O>
+static_assert(
+    !HasUniqueCopyIter<
+        cpp20_input_iterator<MoveOnly*>,
+        sentinel_wrapper<cpp20_input_iterator<MoveOnly*>>,
+        cpp20_output_iterator<AssignableFromMoveOnly*>>);
+// because:
+static_assert(!std::forward_iterator<cpp20_input_iterator<MoveOnly*>>);
+static_assert(!std::input_iterator<cpp20_output_iterator<MoveOnly*>>);
+static_assert(
+    !std::
+        indirectly_copyable_storable<cpp20_input_iterator<MoveOnly*>, cpp20_output_iterator<AssignableFromMoveOnly*>>);
+
+template < class Range, class OutIter = int*, class Comp = std::ranges::equal_to, class Proj = std::identity>
+concept HasUniqueCopyRange =
+    requires(Range&& range, OutIter&& out, Comp&& comp, Proj&& proj) {
+      std::ranges::unique_copy(
+          std::forward<Range>(range), std::forward<OutIter>(out), std::forward<Comp>(comp), std::forward<Proj>(proj));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasUniqueCopyRange<R<int*>, int*>);
+
+// !input_range<R>
+static_assert(!HasUniqueCopyRange<R<InputIteratorNotDerivedFrom>>);
+
+// !weakly_incrementable<O>
+static_assert(!HasUniqueCopyIter<R<int*>, WeaklyIncrementableNotMovable>);
+
+// !indirect_equivalence_relation<Comp, projected<I, Proj>>
+static_assert(!HasUniqueCopyIter<R<int*>, int*, ComparatorNotCopyable<int>>);
+
+// !indirectly_copyable<I, O>
+static_assert(!HasUniqueCopyIter<R<const int*>, const int*>);
+
+// !forward_iterator<iterator_t<R>>
+// !(input_iterator<O> && same_as<range_value_t<R>, iter_value_t<O>>)
+// !indirectly_copyable_storable<iterator_t<R>, O>
+static_assert(!HasUniqueCopyIter< R<cpp20_input_iterator<MoveOnly*>>, cpp20_output_iterator<AssignableFromMoveOnly*>>);
+
+template <class InIter, class OutIter, template <class> class SentWrapper, std::size_t N1, std::size_t N2>
+constexpr void testUniqueCopyImpl(std::array<int, N1> in, std::array<int, N2> expected) {
+  using Sent = SentWrapper<InIter>;
+
+  // iterator overload
+  {
+    std::array<int, N2> out;
+    std::same_as<std::ranges::unique_copy_result<InIter, OutIter>> decltype(auto) result =
+        std::ranges::unique_copy(InIter{in.data()}, Sent{InIter{in.data() + in.size()}}, OutIter{out.begin()});
+    assert(std::ranges::equal(out, expected));
+    assert(base(result.in) == in.data() + in.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N2> out;
+    std::ranges::subrange r{InIter{in.data()}, Sent{InIter{in.data() + in.size()}}};
+    std::same_as<std::ranges::unique_copy_result<InIter, OutIter>> decltype(auto) result =
+        std::ranges::unique_copy(r, OutIter{out.begin()});
+    assert(std::ranges::equal(out, expected));
+    assert(base(result.in) == in.data() + in.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class InIter, class OutIter, template <class> class SentWrapper>
+constexpr void testImpl() {
+  // no consecutive elements
+  {
+    std::array in{1, 2, 3, 2, 1};
+    std::array expected{1, 2, 3, 2, 1};
+    testUniqueCopyImpl<InIter, OutIter, SentWrapper>(in, expected);
+  }
+
+  // one group of consecutive elements
+  {
+    std::array in{2, 3, 3, 3, 4, 3};
+    std::array expected{2, 3, 4, 3};
+    testUniqueCopyImpl<InIter, OutIter, SentWrapper>(in, expected);
+  }
+
+  // multiple groups of consecutive elements
+  {
+    std::array in{2, 3, 3, 3, 4, 3, 3, 5, 5, 5};
+    std::array expected{2, 3, 4, 3, 5};
+    testUniqueCopyImpl<InIter, OutIter, SentWrapper>(in, expected);
+  }
+
+  // all the same
+  {
+    std::array in{1, 1, 1, 1, 1, 1};
+    std::array expected{1};
+    testUniqueCopyImpl<InIter, OutIter, SentWrapper>(in, expected);
+  }
+
+  // empty range
+  {
+    std::array<int, 0> in{};
+    std::array<int, 0> expected{};
+    testUniqueCopyImpl<InIter, OutIter, SentWrapper>(in, expected);
+  }
+}
+
+template <class OutIter, template <class> class SentWrapper>
+constexpr void withAllPermutationsOfInIter() {
+  testImpl<cpp20_input_iterator<int*>, OutIter, sentinel_wrapper>();
+  testImpl<forward_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<bidirectional_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<random_access_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<contiguous_iterator<int*>, OutIter, SentWrapper>();
+  testImpl<int*, OutIter, SentWrapper>();
+}
+
+template <template <class> class SentWrapper>
+constexpr void withAllPermutationsOfInIterAndOutIter() {
+  withAllPermutationsOfInIter<cpp20_output_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfInIter<forward_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfInIter<bidirectional_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfInIter<random_access_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfInIter<contiguous_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfInIter<int*, SentWrapper>();
+}
+
+constexpr bool test() {
+  withAllPermutationsOfInIterAndOutIter<std::type_identity_t>();
+  withAllPermutationsOfInIterAndOutIter<sentinel_wrapper>();
+
+  // Test the overload that re-reads from the input iterator
+  // forward_iterator<I>
+  // !(input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+  // !indirectly_copyable_storable<I, O>
+  {
+    MoveOnly in[5] = {1, 3, 3, 3, 1};
+    // iterator overload
+    {
+      AssignableFromMoveOnly out[3] = {};
+      auto result                   = std::ranges::unique_copy(in, in + 5, out);
+      assert(std::ranges::equal(out, std::array{1, 3, 1}, {}, &AssignableFromMoveOnly::data));
+      assert(result.in == in + 5);
+      assert(result.out == out + 3);
+    }
+    // range overload
+    {
+      AssignableFromMoveOnly out[3] = {};
+      auto result                   = std::ranges::unique_copy(std::ranges::subrange{in, in + 5}, out);
+      assert(std::ranges::equal(out, std::array{1, 3, 1}, {}, &AssignableFromMoveOnly::data));
+      assert(result.in == in + 5);
+      assert(result.out == out + 3);
+    }
+  }
+
+  // Test the overload that re-reads from the output iterator
+  // !forward_iterator<I>
+  // (input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+  // !indirectly_copyable_storable<I, O>
+  {
+    using InIter                             = cpp20_input_iterator<CopyAssignableNotCopyConstructible*>;
+    using Sent                               = sentinel_wrapper<InIter>;
+    CopyAssignableNotCopyConstructible in[6] = {1, 1, 2, 2, 3, 3};
+    // iterator overload
+    {
+      CopyAssignableNotCopyConstructible out[3];
+      auto result = std::ranges::unique_copy(InIter{in}, Sent{InIter{in + 6}}, InputAndOutputIterator{out});
+      assert(std::ranges::equal(out, std::array{1, 2, 3}, {}, &CopyAssignableNotCopyConstructible::data));
+      assert(base(result.in) == in + 6);
+      assert(base(result.out) == out + 3);
+    }
+    // range overload
+    {
+      CopyAssignableNotCopyConstructible out[3];
+      auto r      = std::ranges::subrange(InIter{in}, Sent{InIter{in + 6}});
+      auto result = std::ranges::unique_copy(r, InputAndOutputIterator{out});
+      assert(std::ranges::equal(out, std::array{1, 2, 3}, {}, &CopyAssignableNotCopyConstructible::data));
+      assert(base(result.in) == in + 6);
+      assert(base(result.out) == out + 3);
+    }
+  }
+
+  // Test the overload that reads from the temporary copy of the value
+  // !forward_iterator<I>
+  // !(input_iterator<O> && same_as<iter_value_t<I>, iter_value_t<O>>)
+  // indirectly_copyable_storable<I, O>
+  {
+    using InIter = cpp20_input_iterator<int*>;
+    using Sent   = sentinel_wrapper<InIter>;
+    int in[4]    = {1, 1, 1, 2};
+    // iterator overload
+    {
+      int out[2];
+      auto result = std::ranges::unique_copy(InIter{in}, Sent{InIter{in + 4}}, cpp20_output_iterator<int*>{out});
+      assert(std::ranges::equal(out, std::array{1, 2}));
+      assert(base(result.in) == in + 4);
+      assert(base(result.out) == out + 2);
+    }
+    // range overload
+    {
+      int out[2];
+      auto r      = std::ranges::subrange(InIter{in}, Sent{InIter{in + 4}});
+      auto result = std::ranges::unique_copy(r, cpp20_output_iterator<int*>{out});
+      assert(std::ranges::equal(out, std::array{1, 2}));
+      assert(base(result.in) == in + 4);
+      assert(base(result.out) == out + 2);
+    }
+  }
+
+  struct Data {
+    int data;
+  };
+
+  // Test custom comparator
+  {
+    std::array in{Data{4}, Data{8}, Data{8}, Data{8}};
+    std::array expected{Data{4}, Data{8}};
+    const auto comp = [](const Data& x, const Data& y) { return x.data == y.data; };
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::unique_copy(in.begin(), in.end(), out.begin(), comp);
+      assert(std::ranges::equal(out, expected, comp));
+      assert(base(result.in) == in.begin() + 4);
+      assert(base(result.out) == out.begin() + 2);
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::unique_copy(in, out.begin(), comp);
+      assert(std::ranges::equal(out, expected, comp));
+      assert(base(result.in) == in.begin() + 4);
+      assert(base(result.out) == out.begin() + 2);
+    }
+  }
+
+  // Test custom projection
+  {
+    std::array in{Data{4}, Data{8}, Data{8}, Data{8}};
+    std::array expected{Data{4}, Data{8}};
+
+    const auto proj = &Data::data;
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::unique_copy(in.begin(), in.end(), out.begin(), {}, proj);
+      assert(std::ranges::equal(out, expected, {}, proj, proj));
+      assert(base(result.in) == in.begin() + 4);
+      assert(base(result.out) == out.begin() + 2);
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::unique_copy(in, out.begin(), {}, proj);
+      assert(std::ranges::equal(out, expected, {}, proj, proj));
+      assert(base(result.in) == in.begin() + 4);
+      assert(base(result.out) == out.begin() + 2);
+    }
+  }
+
+  // Exactly last - first - 1 applications of the corresponding predicate and no
+  // more than twice as many applications of any projection.
+  {
+    std::array in{1, 2, 3, 3, 3, 4, 3, 3, 5, 5, 6, 6, 1};
+    std::array expected{1, 2, 3, 4, 3, 5, 6, 1};
+    // iterator overload
+    {
+      std::array<int, 8> out;
+      int numberOfComp = 0;
+      int numberOfProj = 0;
+      auto result      = std::ranges::unique_copy(
+          in.begin(),
+          in.end(),
+          out.begin(),
+          counting_predicate{std::ranges::equal_to{}, numberOfComp},
+          counting_projection{numberOfProj});
+      assert(std::ranges::equal(out, expected));
+      assert(base(result.in) == in.end());
+      assert(base(result.out) == out.end());
+      assert(numberOfComp == in.size() - 1);
+      assert(numberOfProj <= static_cast<int>(2 * (in.size() - 1)));
+    }
+    // range overload
+    {
+      std::array<int, 8> out;
+      int numberOfComp = 0;
+      int numberOfProj = 0;
+      auto result      = std::ranges::unique_copy(
+          in,
+          out.begin(),
+          counting_predicate{std::ranges::equal_to{}, numberOfComp},
+          counting_projection{numberOfProj});
+      assert(std::ranges::equal(out, expected));
+      assert(base(result.in) == in.end());
+      assert(base(result.out) == out.end());
+      assert(numberOfComp == in.size() - 1);
+      assert(numberOfProj <= static_cast<int>(2 * (in.size() - 1)));
+    }
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique.pass.cpp
new file mode 100644
index 0000000..7046d6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique.pass.cpp
@@ -0,0 +1,203 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires OutputIterator<Iter, Iter::reference>
+//         && EqualityComparable<Iter::value_type>
+//   constexpr Iter        // constexpr after C++17
+//   unique(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+          int ia[]       = {0, 1, 1, 3, 4};
+    const int expected[] = {0, 1, 3, 4};
+    const size_t N = 4;
+
+    auto it = std::unique(std::begin(ia), std::end(ia));
+    return it == (std::begin(ia) + N)
+        && std::equal(std::begin(ia), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    Iter r = std::unique(Iter(ia), Iter(ia+sa));
+    assert(base(r) == ia + sa);
+    assert(ia[0] == 0);
+
+    int ib[] = {0, 1};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    r = std::unique(Iter(ib), Iter(ib+sb));
+    assert(base(r) == ib + sb);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+
+    int ic[] = {0, 0};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    r = std::unique(Iter(ic), Iter(ic+sc));
+    assert(base(r) == ic + 1);
+    assert(ic[0] == 0);
+
+    int id[] = {0, 0, 1};
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    r = std::unique(Iter(id), Iter(id+sd));
+    assert(base(r) == id + 2);
+    assert(id[0] == 0);
+    assert(id[1] == 1);
+
+    int ie[] = {0, 0, 1, 0};
+    const unsigned se = sizeof(ie)/sizeof(ie[0]);
+    r = std::unique(Iter(ie), Iter(ie+se));
+    assert(base(r) == ie + 3);
+    assert(ie[0] == 0);
+    assert(ie[1] == 1);
+    assert(ie[2] == 0);
+
+    int ig[] = {0, 0, 1, 1};
+    const unsigned sg = sizeof(ig)/sizeof(ig[0]);
+    r = std::unique(Iter(ig), Iter(ig+sg));
+    assert(base(r) == ig + 2);
+    assert(ig[0] == 0);
+    assert(ig[1] == 1);
+
+    int ih[] = {0, 1, 1};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    r = std::unique(Iter(ih), Iter(ih+sh));
+    assert(base(r) == ih + 2);
+    assert(ih[0] == 0);
+    assert(ih[1] == 1);
+
+    int ii[] = {0, 1, 1, 1, 2, 2, 2};
+    const unsigned si = sizeof(ii)/sizeof(ii[0]);
+    r = std::unique(Iter(ii), Iter(ii+si));
+    assert(base(r) == ii + 3);
+    assert(ii[0] == 0);
+    assert(ii[1] == 1);
+    assert(ii[2] == 2);
+}
+
+#if TEST_STD_VER >= 11
+
+struct do_nothing
+{
+    void operator()(void*) const {}
+};
+
+typedef std::unique_ptr<int, do_nothing> Ptr;
+
+template <class Iter>
+void
+test1()
+{
+    int one = 1;
+    int two = 2;
+    Ptr ia[1];
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    Iter r = std::unique(Iter(ia), Iter(ia+sa));
+    assert(base(r) == ia + sa);
+    assert(ia[0] == 0);
+
+    Ptr ib[2];
+    ib[1].reset(&one);
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    r = std::unique(Iter(ib), Iter(ib+sb));
+    assert(base(r) == ib + sb);
+    assert(ib[0] == 0);
+    assert(*ib[1] == 1);
+
+    Ptr ic[2];
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    r = std::unique(Iter(ic), Iter(ic+sc));
+    assert(base(r) == ic + 1);
+    assert(ic[0] == 0);
+
+    Ptr id[3];
+    id[2].reset(&one);
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    r = std::unique(Iter(id), Iter(id+sd));
+    assert(base(r) == id + 2);
+    assert(id[0] == 0);
+    assert(*id[1] == 1);
+
+    Ptr ie[4];
+    ie[2].reset(&one);
+    const unsigned se = sizeof(ie)/sizeof(ie[0]);
+    r = std::unique(Iter(ie), Iter(ie+se));
+    assert(base(r) == ie + 3);
+    assert(ie[0] == 0);
+    assert(*ie[1] == 1);
+    assert(ie[2] == 0);
+
+    Ptr ig[4];
+    ig[2].reset(&one);
+    ig[3].reset(&one);
+    const unsigned sg = sizeof(ig)/sizeof(ig[0]);
+    r = std::unique(Iter(ig), Iter(ig+sg));
+    assert(base(r) == ig + 2);
+    assert(ig[0] == 0);
+    assert(*ig[1] == 1);
+
+    Ptr ih[3];
+    ih[1].reset(&one);
+    ih[2].reset(&one);
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    r = std::unique(Iter(ih), Iter(ih+sh));
+    assert(base(r) == ih + 2);
+    assert(ih[0] == 0);
+    assert(*ih[1] == 1);
+
+    Ptr ii[7];
+    ii[1].reset(&one);
+    ii[2].reset(&one);
+    ii[3].reset(&one);
+    ii[4].reset(&two);
+    ii[5].reset(&two);
+    ii[6].reset(&two);
+    const unsigned si = sizeof(ii)/sizeof(ii[0]);
+    r = std::unique(Iter(ii), Iter(ii+si));
+    assert(base(r) == ii + 3);
+    assert(ii[0] == 0);
+    assert(*ii[1] == 1);
+    assert(*ii[2] == 2);
+}
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+    test1<forward_iterator<Ptr*> >();
+    test1<bidirectional_iterator<Ptr*> >();
+    test1<random_access_iterator<Ptr*> >();
+    test1<Ptr*>();
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_copy.pass.cpp
new file mode 100644
index 0000000..bcf9c99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_copy.pass.cpp
@@ -0,0 +1,168 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, class OutIter>
+//   requires OutputIterator<OutIter, RvalueOf<InIter::value_type>::type>
+//         && EqualityComparable<InIter::value_type>
+//         && HasAssign<InIter::value_type, InIter::reference>
+//         && Constructible<InIter::value_type, InIter::reference>
+//   constexpr OutIter        // constexpr after C++17
+//   unique_copy(InIter first, InIter last, OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct AssignableFromMoveOnly {
+  AssignableFromMoveOnly(int i) : data(i) {}
+  AssignableFromMoveOnly() : data(0) {}
+  int data;
+  AssignableFromMoveOnly& operator=(MoveOnly const& m) {
+    data = m.get();
+    return *this;
+  }
+  bool operator==(AssignableFromMoveOnly const& rhs) const { return data == rhs.data; }
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+          int ia[]       = {0, 1, 2, 2, 4};
+          int ib[]       = {0, 0, 0, 0, 0};
+    const int expected[] = {0, 1, 2, 4};
+
+    auto it = std::unique_copy(std::begin(ia), std::end(ia), std::begin(ib));
+    return it == (std::begin(ib) + std::size(expected))
+        && *it == 0 // don't overwrite final value in output
+        && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    const int ia[] = {0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ja[sa] = {-1};
+    OutIter r = std::unique_copy(InIter(ia), InIter(ia+sa), OutIter(ja));
+    assert(base(r) == ja + sa);
+    assert(ja[0] == 0);
+
+    const int ib[] = {0, 1};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int jb[sb] = {-1};
+    r = std::unique_copy(InIter(ib), InIter(ib+sb), OutIter(jb));
+    assert(base(r) == jb + sb);
+    assert(jb[0] == 0);
+    assert(jb[1] == 1);
+
+    const int ic[] = {0, 0};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    int jc[sc] = {-1};
+    r = std::unique_copy(InIter(ic), InIter(ic+sc), OutIter(jc));
+    assert(base(r) == jc + 1);
+    assert(jc[0] == 0);
+
+    const int id[] = {0, 0, 1};
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    int jd[sd] = {-1};
+    r = std::unique_copy(InIter(id), InIter(id+sd), OutIter(jd));
+    assert(base(r) == jd + 2);
+    assert(jd[0] == 0);
+    assert(jd[1] == 1);
+
+    const int ie[] = {0, 0, 1, 0};
+    const unsigned se = sizeof(ie)/sizeof(ie[0]);
+    int je[se] = {-1};
+    r = std::unique_copy(InIter(ie), InIter(ie+se), OutIter(je));
+    assert(base(r) == je + 3);
+    assert(je[0] == 0);
+    assert(je[1] == 1);
+    assert(je[2] == 0);
+
+    const int ig[] = {0, 0, 1, 1};
+    const unsigned sg = sizeof(ig)/sizeof(ig[0]);
+    int jg[sg] = {-1};
+    r = std::unique_copy(InIter(ig), InIter(ig+sg), OutIter(jg));
+    assert(base(r) == jg + 2);
+    assert(jg[0] == 0);
+    assert(jg[1] == 1);
+
+    const int ih[] = {0, 1, 1};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int jh[sh] = {-1};
+    r = std::unique_copy(InIter(ih), InIter(ih+sh), OutIter(jh));
+    assert(base(r) == jh + 2);
+    assert(jh[0] == 0);
+    assert(jh[1] == 1);
+
+    const int ii[] = {0, 1, 1, 1, 2, 2, 2};
+    const unsigned si = sizeof(ii)/sizeof(ii[0]);
+    int ji[si] = {-1};
+    r = std::unique_copy(InIter(ii), InIter(ii+si), OutIter(ji));
+    assert(base(r) == ji + 3);
+    assert(ji[0] == 0);
+    assert(ji[1] == 1);
+    assert(ji[2] == 2);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+    // Move only inputs
+    {
+      MoveOnly in[5]                     = {1, 3, 3, 3, 1};
+      AssignableFromMoveOnly out[3]      = {};
+      auto result                        = std::unique_copy(in, in + 5, out);
+      AssignableFromMoveOnly expected[3] = {1, 3, 1};
+      assert(std::equal(out, out + 3, expected));
+      assert(result == out + 3);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_copy_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_copy_pred.pass.cpp
new file mode 100644
index 0000000..e7d76a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_copy_pred.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, class OutIter,
+//          EquivalenceRelation<auto, InIter::value_type> Pred>
+//   requires OutputIterator<OutIter, RvalueOf<InIter::value_type>::type>
+//         && HasAssign<InIter::value_type, InIter::reference>
+//         && Constructible<InIter::value_type, InIter::reference>
+//         && CopyConstructible<Pred>
+//   constexpr OutIter        // constexpr after C++17
+//   unique_copy(InIter first, InIter last, OutIter result, Pred pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+          int ia[]       = {0, 1, 2, 2, 4};
+          int ib[]       = {0, 0, 0, 0, 0};
+    const int expected[] = {0, 1, 2, 4};
+
+    auto it = std::unique_copy(std::begin(ia), std::end(ia), std::begin(ib),
+                         [](int a, int b) {return a == b; });
+    return it == (std::begin(ib) + std::size(expected))
+        && *it == 0 // don't overwrite final value in output
+        && std::equal(std::begin(ib), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y)
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <class InIter, class OutIter>
+void
+test()
+{
+    const int ia[] = {0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ja[sa] = {-1};
+    count_equal::count = 0;
+    OutIter r = std::unique_copy(InIter(ia), InIter(ia+sa), OutIter(ja), count_equal());
+    assert(base(r) == ja + sa);
+    assert(ja[0] == 0);
+    assert(count_equal::count == sa-1);
+
+    const int ib[] = {0, 1};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int jb[sb] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(ib), InIter(ib+sb), OutIter(jb), count_equal());
+    assert(base(r) == jb + sb);
+    assert(jb[0] == 0);
+    assert(jb[1] == 1);
+    assert(count_equal::count == sb-1);
+
+    const int ic[] = {0, 0};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    int jc[sc] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(ic), InIter(ic+sc), OutIter(jc), count_equal());
+    assert(base(r) == jc + 1);
+    assert(jc[0] == 0);
+    assert(count_equal::count == sc-1);
+
+    const int id[] = {0, 0, 1};
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    int jd[sd] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(id), InIter(id+sd), OutIter(jd), count_equal());
+    assert(base(r) == jd + 2);
+    assert(jd[0] == 0);
+    assert(jd[1] == 1);
+    assert(count_equal::count == sd-1);
+
+    const int ie[] = {0, 0, 1, 0};
+    const unsigned se = sizeof(ie)/sizeof(ie[0]);
+    int je[se] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(ie), InIter(ie+se), OutIter(je), count_equal());
+    assert(base(r) == je + 3);
+    assert(je[0] == 0);
+    assert(je[1] == 1);
+    assert(je[2] == 0);
+    assert(count_equal::count == se-1);
+
+    const int ig[] = {0, 0, 1, 1};
+    const unsigned sg = sizeof(ig)/sizeof(ig[0]);
+    int jg[sg] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(ig), InIter(ig+sg), OutIter(jg), count_equal());
+    assert(base(r) == jg + 2);
+    assert(jg[0] == 0);
+    assert(jg[1] == 1);
+    assert(count_equal::count == sg-1);
+
+    const int ih[] = {0, 1, 1};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int jh[sh] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(ih), InIter(ih+sh), OutIter(jh), count_equal());
+    assert(base(r) == jh + 2);
+    assert(jh[0] == 0);
+    assert(jh[1] == 1);
+    assert(count_equal::count == sh-1);
+
+    const int ii[] = {0, 1, 1, 1, 2, 2, 2};
+    const unsigned si = sizeof(ii)/sizeof(ii[0]);
+    int ji[si] = {-1};
+    count_equal::count = 0;
+    r = std::unique_copy(InIter(ii), InIter(ii+si), OutIter(ji), count_equal());
+    assert(base(r) == ji + 3);
+    assert(ji[0] == 0);
+    assert(ji[1] == 1);
+    assert(ji[2] == 2);
+    assert(count_equal::count == si-1);
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_pred.pass.cpp
new file mode 100644
index 0000000..9f0c695
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.modifying.operations/alg.unique/unique_pred.pass.cpp
@@ -0,0 +1,245 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, EquivalenceRelation<auto, Iter::value_type> Pred>
+//   requires OutputIterator<Iter, RvalueOf<Iter::reference>::type>
+//         && CopyConstructible<Pred>
+//   constexpr Iter        // constexpr after C++17
+//   unique(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+          int ia[]       = {0, 1, 1, 3, 4};
+    const int expected[] = {0, 1, 3, 4};
+    const size_t N = 4;
+
+    auto it = std::unique(std::begin(ia), std::end(ia), [](int a, int b) {return a == b; });
+    return it == (std::begin(ia) + N)
+        && std::equal(std::begin(ia), it, std::begin(expected), std::end(expected))
+        ;
+    }
+#endif
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y)
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    count_equal::count = 0;
+    Iter r = std::unique(Iter(ia), Iter(ia+sa), count_equal());
+    assert(base(r) == ia + sa);
+    assert(ia[0] == 0);
+    assert(count_equal::count == sa-1);
+
+    int ib[] = {0, 1};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ib), Iter(ib+sb), count_equal());
+    assert(base(r) == ib + sb);
+    assert(ib[0] == 0);
+    assert(ib[1] == 1);
+    assert(count_equal::count == sb-1);
+
+    int ic[] = {0, 0};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ic), Iter(ic+sc), count_equal());
+    assert(base(r) == ic + 1);
+    assert(ic[0] == 0);
+    assert(count_equal::count == sc-1);
+
+    int id[] = {0, 0, 1};
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(id), Iter(id+sd), count_equal());
+    assert(base(r) == id + 2);
+    assert(id[0] == 0);
+    assert(id[1] == 1);
+    assert(count_equal::count == sd-1);
+
+    int ie[] = {0, 0, 1, 0};
+    const unsigned se = sizeof(ie)/sizeof(ie[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ie), Iter(ie+se), count_equal());
+    assert(base(r) == ie + 3);
+    assert(ie[0] == 0);
+    assert(ie[1] == 1);
+    assert(ie[2] == 0);
+    assert(count_equal::count == se-1);
+
+    int ig[] = {0, 0, 1, 1};
+    const unsigned sg = sizeof(ig)/sizeof(ig[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ig), Iter(ig+sg), count_equal());
+    assert(base(r) == ig + 2);
+    assert(ig[0] == 0);
+    assert(ig[1] == 1);
+    assert(count_equal::count == sg-1);
+
+    int ih[] = {0, 1, 1};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ih), Iter(ih+sh), count_equal());
+    assert(base(r) == ih + 2);
+    assert(ih[0] == 0);
+    assert(ih[1] == 1);
+    assert(count_equal::count == sh-1);
+
+    int ii[] = {0, 1, 1, 1, 2, 2, 2};
+    const unsigned si = sizeof(ii)/sizeof(ii[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ii), Iter(ii+si), count_equal());
+    assert(base(r) == ii + 3);
+    assert(ii[0] == 0);
+    assert(ii[1] == 1);
+    assert(ii[2] == 2);
+    assert(count_equal::count == si-1);
+}
+
+#if TEST_STD_VER >= 11
+
+struct do_nothing
+{
+    void operator()(void*) const {}
+};
+
+typedef std::unique_ptr<int, do_nothing> Ptr;
+
+template <class Iter>
+void
+test1()
+{
+    int one = 1;
+    int two = 2;
+    Ptr ia[1];
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    count_equal::count = 0;
+    Iter r = std::unique(Iter(ia), Iter(ia+sa), count_equal());
+    assert(base(r) == ia + sa);
+    assert(ia[0] == 0);
+    assert(count_equal::count == sa-1);
+
+    Ptr ib[2];
+    ib[1].reset(&one);
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ib), Iter(ib+sb), count_equal());
+    assert(base(r) == ib + sb);
+    assert(ib[0] == 0);
+    assert(*ib[1] == 1);
+    assert(count_equal::count == sb-1);
+
+    Ptr ic[2];
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ic), Iter(ic+sc), count_equal());
+    assert(base(r) == ic + 1);
+    assert(ic[0] == 0);
+    assert(count_equal::count == sc-1);
+
+    Ptr id[3];
+    id[2].reset(&one);
+    const unsigned sd = sizeof(id)/sizeof(id[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(id), Iter(id+sd), count_equal());
+    assert(base(r) == id + 2);
+    assert(id[0] == 0);
+    assert(*id[1] == 1);
+    assert(count_equal::count == sd-1);
+
+    Ptr ie[4];
+    ie[2].reset(&one);
+    const unsigned se = sizeof(ie)/sizeof(ie[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ie), Iter(ie+se), count_equal());
+    assert(base(r) == ie + 3);
+    assert(ie[0] == 0);
+    assert(*ie[1] == 1);
+    assert(ie[2] == 0);
+    assert(count_equal::count == se-1);
+
+    Ptr ig[4];
+    ig[2].reset(&one);
+    ig[3].reset(&one);
+    const unsigned sg = sizeof(ig)/sizeof(ig[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ig), Iter(ig+sg), count_equal());
+    assert(base(r) == ig + 2);
+    assert(ig[0] == 0);
+    assert(*ig[1] == 1);
+    assert(count_equal::count == sg-1);
+
+    Ptr ih[3];
+    ih[1].reset(&one);
+    ih[2].reset(&one);
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ih), Iter(ih+sh), count_equal());
+    assert(base(r) == ih + 2);
+    assert(ih[0] == 0);
+    assert(*ih[1] == 1);
+    assert(count_equal::count == sh-1);
+
+    Ptr ii[7];
+    ii[1].reset(&one);
+    ii[2].reset(&one);
+    ii[3].reset(&one);
+    ii[4].reset(&two);
+    ii[5].reset(&two);
+    ii[6].reset(&two);
+    const unsigned si = sizeof(ii)/sizeof(ii[0]);
+    count_equal::count = 0;
+    r = std::unique(Iter(ii), Iter(ii+si), count_equal());
+    assert(base(r) == ii + 3);
+    assert(ii[0] == 0);
+    assert(*ii[1] == 1);
+    assert(*ii[2] == 2);
+    assert(count_equal::count == si-1);
+}
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+    test1<forward_iterator<Ptr*> >();
+    test1<bidirectional_iterator<Ptr*> >();
+    test1<random_access_iterator<Ptr*> >();
+    test1<Ptr*>();
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find.pass.cpp
new file mode 100644
index 0000000..6d57c58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires EqualityComparable<Iter::value_type>
+//   constexpr Iter  // constexpr after C++17
+//   adjacent_find(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    int ib[] = {0, 1, 2, 7, 0, 1, 2, 3};
+
+    return  (std::adjacent_find(std::begin(ia), std::end(ia)) == ia+2)
+         && (std::adjacent_find(std::begin(ib), std::end(ib)) == std::end(ib))
+         ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::adjacent_find(forward_iterator<const int*>(ia),
+                              forward_iterator<const int*>(ia + sa)) ==
+                              forward_iterator<const int*>(ia+2));
+    assert(std::adjacent_find(forward_iterator<const int*>(ia),
+                              forward_iterator<const int*>(ia)) ==
+                              forward_iterator<const int*>(ia));
+    assert(std::adjacent_find(forward_iterator<const int*>(ia+3),
+                              forward_iterator<const int*>(ia + sa)) ==
+                              forward_iterator<const int*>(ia+sa));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find_pred.pass.cpp
new file mode 100644
index 0000000..c80bc9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/adjacent_find_pred.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, EquivalenceRelation<auto, Iter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr Iter  // constexpr after C++17
+//   adjacent_find(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool eq (int a, int b) { return a == b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    int ib[] = {0, 1, 2, 7, 0, 1, 2, 3};
+
+    return  (std::adjacent_find(std::begin(ia), std::end(ia), eq) == ia+2)
+         && (std::adjacent_find(std::begin(ib), std::end(ib), eq) == std::end(ib))
+         ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::adjacent_find(forward_iterator<const int*>(ia),
+                              forward_iterator<const int*>(ia + sa),
+                              std::equal_to<int>()) ==
+                              forward_iterator<const int*>(ia+2));
+    assert(std::adjacent_find(forward_iterator<const int*>(ia),
+                              forward_iterator<const int*>(ia),
+                              std::equal_to<int>()) ==
+                              forward_iterator<const int*>(ia));
+    assert(std::adjacent_find(forward_iterator<const int*>(ia+3),
+                              forward_iterator<const int*>(ia + sa),
+                              std::equal_to<int>()) ==
+                              forward_iterator<const int*>(ia+sa));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/ranges.adjacent_find.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/ranges.adjacent_find.pass.cpp
new file mode 100644
index 0000000..c040e27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.adjacent.find/ranges.adjacent_find.pass.cpp
@@ -0,0 +1,196 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_binary_predicate<projected<I, Proj>,
+//                                    projected<I, Proj>> Pred = ranges::equal_to>
+//   constexpr I ranges::adjacent_find(I first, S last, Pred pred = {}, Proj proj = {});
+// template<forward_range R, class Proj = identity,
+//          indirect_binary_predicate<projected<iterator_t<R>, Proj>,
+//                                    projected<iterator_t<R>, Proj>> Pred = ranges::equal_to>
+//   constexpr borrowed_iterator_t<R> ranges::adjacent_find(R&& r, Pred pred = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <cstddef>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = Iter>
+concept HasAdjacentFindIt = requires (Iter iter, Sent sent) { std::ranges::adjacent_find(iter, sent); };
+
+struct NotComparable {};
+
+static_assert(HasAdjacentFindIt<int*>);
+static_assert(!HasAdjacentFindIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasAdjacentFindIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasAdjacentFindIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasAdjacentFindIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasAdjacentFindIt<NotComparable*>);
+
+template <class Range>
+concept HasAdjacentFindR = requires (Range range) { std::ranges::adjacent_find(range); };
+
+static_assert(HasAdjacentFindR<UncheckedRange<int*>>);
+static_assert(!HasAdjacentFindR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasAdjacentFindR<ForwardRangeNotIncrementable>);
+static_assert(!HasAdjacentFindR<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasAdjacentFindR<ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasAdjacentFindR<UncheckedRange<NotComparable>>);
+
+template <size_t N>
+struct Data {
+  std::array<int, N> input;
+  int expected;
+};
+
+template <class Iter, class Sent, size_t N>
+constexpr void test(Data<N> d) {
+  {
+    std::same_as<Iter> decltype(auto) ret =
+        std::ranges::adjacent_find(Iter(d.input.data()), Sent(Iter(d.input.data() + d.input.size())));
+    assert(base(ret) == d.input.data() + d.expected);
+  }
+  {
+    auto range = std::ranges::subrange(Iter(d.input.data()), Sent(Iter(d.input.data() + d.input.size())));
+    std::same_as<Iter> decltype(auto) ret = std::ranges::adjacent_find(range);
+    assert(base(ret) == d.input.data() + d.expected);
+  }
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter, Sent, 4>({.input = {1, 2, 2, 4}, .expected = 1});
+  // last is returned with no match
+  test<Iter, Sent, 4>({.input = {1, 2, 3, 4}, .expected = 4});
+  // first elements match
+  test<Iter, Sent, 4>({.input = {1, 1, 3, 4}, .expected = 0});
+  // the first match is returned
+  test<Iter, Sent, 7>({.input = {1, 1, 3, 4, 4, 4, 4}, .expected = 0});
+  // two element range works
+  test<Iter, Sent, 2>({.input = {3, 3}, .expected = 0});
+  // single element range works
+  test<Iter, Sent, 1>({.input = {1}, .expected = 1});
+  // empty range works
+  test<Iter, Sent, 0>({.input = {}, .expected = 0});
+}
+
+constexpr bool test() {
+  test_iterators<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+  test_iterators<const int*>();
+
+  { // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::adjacent_find(std::array{1, 2, 3, 4});
+  }
+
+  { // check that the complexity requirements are met with no match
+    {
+      int predicateCount = 0;
+      auto pred = [&](int, int) { ++predicateCount; return false; };
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::adjacent_find(a, a + 5, pred, proj);
+      assert(ret == a + 5);
+      assert(predicateCount == 4);
+      assert(projectionCount == 8);
+    }
+    {
+      int predicateCount = 0;
+      auto pred = [&](int, int) { ++predicateCount; return false; };
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::adjacent_find(a, pred, proj);
+      assert(ret == a + 5);
+      assert(predicateCount == 4);
+      assert(projectionCount == 8);
+    }
+  }
+
+  { // check that the complexity requirements are met with a match
+    {
+      int predicateCount = 0;
+      auto pred = [&](int i, int j) { ++predicateCount; return i == j; };
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 4, 4, 5};
+      auto ret = std::ranges::adjacent_find(a, a + 5, pred, proj);
+      assert(ret == a + 2);
+      assert(predicateCount == 3);
+      assert(projectionCount == 6);
+    }
+    {
+      int predicateCount = 0;
+      auto pred = [&](int i, int j) { ++predicateCount; return i == j; };
+      auto projectionCount = 0;
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      int a[] = {1, 2, 4, 4, 5};
+      auto ret = std::ranges::adjacent_find(a, pred, proj);
+      assert(ret == a + 2);
+      assert(predicateCount == 3);
+      assert(projectionCount == 6);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      constexpr bool compare(const S& j) const { return j.i == i; }
+      constexpr const S& identity() const { return *this; }
+      int i;
+    };
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::adjacent_find(std::begin(a), std::end(a), &S::compare, &S::identity);
+      assert(ret == a + 4);
+    }
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::adjacent_find(a, &S::compare, &S::identity);
+      assert(ret == a + 4);
+    }
+  }
+
+  { // check that the implicit conversion to bool works
+    {
+      int a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::adjacent_find(a, a + 4, [](int i, int j) { return BooleanTestable{i == j}; });
+      assert(ret == a + 1);
+    }
+    {
+      int a[] = {1, 2, 2, 4};
+      auto ret = std::ranges::adjacent_find(a, [](int i, int j) { return BooleanTestable{i == j}; });
+      assert(ret == a + 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.all_of/all_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.all_of/all_of.pass.cpp
new file mode 100644
index 0000000..255cd62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.all_of/all_of.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class InputIterator, class Predicate>
+//     constexpr bool       // constexpr after C++17
+//   all_of(InputIterator first, InputIterator last, Predicate pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct test1
+{
+    TEST_CONSTEXPR bool operator()(const int& i) const
+    {
+        return i % 2 == 0;
+    }
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {2, 4, 6, 8};
+    int ib[] = {2, 4, 5, 8};
+    return  std::all_of(std::begin(ia), std::end(ia), test1())
+        && !std::all_of(std::begin(ib), std::end(ib), test1())
+        ;
+    }
+#endif
+
+int main(int, char**)
+{
+    {
+        int ia[] = {2, 4, 6, 8};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::all_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia + sa), test1()) == true);
+        assert(std::all_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia), test1()) == true);
+    }
+    {
+        const int ia[] = {2, 4, 5, 8};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::all_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia + sa), test1()) == false);
+        assert(std::all_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia), test1()) == true);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.all_of/ranges.all_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.all_of/ranges.all_of.pass.cpp
new file mode 100644
index 0000000..3118ad7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.all_of/ranges.all_of.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr bool ranges::all_of(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr bool ranges::all_of(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct UnaryFunctor {
+  bool operator()(auto&&);
+};
+
+template <class It, class Sent = sentinel_wrapper<It>>
+concept HasAllOfIt = requires(It first, Sent last) { std::ranges::all_of(first, last, UnaryFunctor{}); };
+
+static_assert(HasAllOfIt<int*>);
+static_assert(!HasAllOfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasAllOfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasAllOfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasAllOfIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasAllOfIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Func>
+concept HasAllOfItFunc = requires(int* ptr) { std::ranges::all_of(ptr, ptr, Func{}); };
+
+static_assert(HasAllOfItFunc<UnaryFunctor>);
+static_assert(!HasAllOfItFunc<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasAllOfItFunc<IndirectUnaryPredicateNotPredicate>);
+
+template <class Range>
+concept HasAllOfR = requires(Range range) { std::ranges::all_of(range, UnaryFunctor{}); };
+
+static_assert(HasAllOfR<std::array<int, 10>>);
+static_assert(!HasAllOfR<InputRangeNotDerivedFrom>);
+static_assert(!HasAllOfR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasAllOfR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasAllOfR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasAllOfR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class Func>
+concept HasAllOfRFunc = requires(std::array<int, 10> range) { std::ranges::all_of(range, Func{}); };
+
+static_assert(HasAllOfRFunc<UnaryFunctor>);
+static_assert(!HasAllOfRFunc<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasAllOfRFunc<IndirectUnaryPredicateNotPredicate>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4};
+      std::same_as<bool> decltype(auto) ret = std::ranges::all_of(It(a), Sent(It(a + 4)), [](int) { return true; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+      std::same_as<bool> decltype(auto) ret = std::ranges::all_of(range, [](int) { return true; });
+      assert(ret);
+    }
+  }
+
+  { // check that an empty range works
+    std::array<int, 0> a;
+    assert(std::ranges::all_of(It(a.data()), Sent(It(a.data())), [](int) { return false; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data())));
+    assert(std::ranges::all_of(range, [](int) { return false; }));
+  }
+
+  { // check that the complexity requirements are met
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int) { ++predicateCount; return true; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      std::array a = {9, 7, 5, 3};
+      assert(std::ranges::all_of(It(a.begin()), Sent(It(a.end())), pred, proj));
+      assert(predicateCount == 4);
+      assert(projectionCount == 4);
+    }
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int) { ++predicateCount; return true; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      std::array a = {9, 7, 5, 3};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      assert(std::ranges::all_of(range, pred, proj));
+      assert(predicateCount == 4);
+      assert(projectionCount == 4);
+    }
+  }
+
+  { // check that false is returned if no element satisfies the condition
+    std::array a = {1, 2, 3, 4};
+    assert(!std::ranges::all_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i > 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(!std::ranges::all_of(range, [](int i) { return i > 5; }));
+  }
+
+  { // check that true is returned if all elements satisfy the condition
+    std::array a = {1, 2, 3, 4};
+    assert(std::ranges::all_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i < 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(std::ranges::all_of(range, [](int i) { return i < 5; }));
+  }
+
+  { // check that false is returned if ony one elements satisfies the condition
+    std::array a = {1, 2, 3, 4, 6};
+    assert(!std::ranges::all_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i > 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(!std::ranges::all_of(range, [](int i) { return i > 5; }));
+  }
+}
+
+constexpr bool test() {
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that std::invoke is used
+    struct S { int check; int other; };
+    S a[] = {{1, 2}, {1, 7}, {1, 3}};
+    assert(std::ranges::all_of(a, a + 3, [](int i) { return i == 1; }, &S::check));
+    assert(std::ranges::all_of(a, [](int i) { return i == 1; }, &S::check));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.any_of/any_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.any_of/any_of.pass.cpp
new file mode 100644
index 0000000..79f4438
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.any_of/any_of.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class InputIterator, class Predicate>
+//     constexpr bool       // constexpr after C++17
+//   any_of(InputIterator first, InputIterator last, Predicate pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct test1
+{
+    TEST_CONSTEXPR bool operator()(const int& i) const
+    {
+        return i % 2 == 0;
+    }
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {2, 4, 6, 8};
+    int ib[] = {1, 3, 5, 7};
+    return  std::any_of(std::begin(ia), std::end(ia), test1())
+        && !std::any_of(std::begin(ib), std::end(ib), test1())
+        ;
+    }
+#endif
+
+int main(int, char**)
+{
+    {
+        int ia[] = {2, 4, 6, 8};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::any_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia + sa), test1()) == true);
+        assert(std::any_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia), test1()) == false);
+    }
+    {
+        const int ia[] = {2, 4, 5, 8};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::any_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia + sa), test1()) == true);
+        assert(std::any_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia), test1()) == false);
+    }
+    {
+        const int ia[] = {1, 3, 5, 7};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::any_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia + sa), test1()) == false);
+        assert(std::any_of(cpp17_input_iterator<const int*>(ia),
+                           cpp17_input_iterator<const int*>(ia), test1()) == false);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.any_of/ranges.any_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.any_of/ranges.any_of.pass.cpp
new file mode 100644
index 0000000..3dbac4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.any_of/ranges.any_of.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr bool ranges::any_of(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr bool ranges::any_of(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct UnaryFunctor {
+  bool operator()(auto&&);
+};
+
+template <class It, class Sent = sentinel_wrapper<It>>
+concept HasAnyOfIt = requires(It first, Sent last) { std::ranges::any_of(first, last, UnaryFunctor{}); };
+
+static_assert(HasAnyOfIt<int*>);
+static_assert(!HasAnyOfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasAnyOfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasAnyOfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasAnyOfIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasAnyOfIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Func>
+concept HasAnyOfItFunc = requires(int* ptr) { std::ranges::any_of(ptr, ptr, Func{}); };
+
+static_assert(HasAnyOfItFunc<UnaryFunctor>);
+static_assert(!HasAnyOfItFunc<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasAnyOfItFunc<IndirectUnaryPredicateNotPredicate>);
+
+template <class Range>
+concept HasAnyOfR = requires(Range range) { std::ranges::any_of(range, UnaryFunctor{}); };
+
+static_assert(HasAnyOfR<std::array<int, 10>>);
+static_assert(!HasAnyOfR<InputRangeNotDerivedFrom>);
+static_assert(!HasAnyOfR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasAnyOfR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasAnyOfR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasAnyOfR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class Func>
+concept HasAnyOfRFunc = requires(std::array<int, 10> range) { std::ranges::any_of(range, Func{}); };
+
+static_assert(HasAnyOfRFunc<UnaryFunctor>);
+static_assert(!HasAnyOfRFunc<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasAnyOfRFunc<IndirectUnaryPredicateNotPredicate>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4};
+      std::same_as<bool> decltype(auto) ret = std::ranges::any_of(It(a), Sent(It(a + 4)), [](int) { return true; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+      std::same_as<bool> decltype(auto) ret = std::ranges::any_of(range, [](int) { return true; });
+      assert(ret);
+    }
+  }
+
+  { // check that an empty range works
+    std::array<int, 0> a;
+    assert(!std::ranges::any_of(It(a.data()), Sent(It(a.data())), [](int) { return false; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data())));
+    assert(!std::ranges::any_of(range, [](int) { return false; }));
+  }
+
+  { // check that the complexity requirements are met
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int) { ++predicateCount; return false; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      std::array a = {9, 7, 5, 3};
+      assert(!std::ranges::any_of(It(a.begin()), Sent(It(a.end())), pred, proj));
+      assert(predicateCount == 4);
+      assert(projectionCount == 4);
+    }
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int) { ++predicateCount; return false; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      std::array a = {9, 7, 5, 3};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      assert(!std::ranges::any_of(range, pred, proj));
+      assert(predicateCount == 4);
+      assert(projectionCount == 4);
+    }
+  }
+
+  { // check that false is returned if no element satisfies the condition
+    std::array a = {1, 2, 3, 4};
+    assert(!std::ranges::any_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i > 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(!std::ranges::any_of(range, [](int i) { return i > 5; }));
+  }
+
+  { // check that true is returned if all elements satisfy the condition
+    std::array a = {1, 2, 3, 4};
+    assert(std::ranges::any_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i < 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(std::ranges::any_of(range, [](int i) { return i < 5; }));
+  }
+
+  { // check that true is returned if ony one elements satisfies the condition
+    std::array a = {1, 2, 3, 4, 6};
+    assert(std::ranges::any_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i > 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(std::ranges::any_of(range, [](int i) { return i > 5; }));
+  }
+}
+
+constexpr bool test() {
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that std::invoke is used
+    struct S { int check; int other; };
+    S a[] = {{1, 2}, {1, 7}, {1, 3}};
+    assert(std::ranges::any_of(a, a + 3, [](int i) { return i == 1; }, &S::check));
+    assert(std::ranges::any_of(a, [](int i) { return i == 1; }, &S::check));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/count.pass.cpp
new file mode 100644
index 0000000..1cb45cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/count.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, class T>
+//   requires HasEqualTo<Iter::value_type, T>
+//   constexpr Iter::difference_type   // constexpr after C++17
+//   count(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    int ib[] = {1, 2, 3, 4, 5, 6};
+    return    (std::count(std::begin(ia), std::end(ia), 2) == 3)
+           && (std::count(std::begin(ib), std::end(ib), 9) == 0)
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::count(cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia + sa), 2) == 3);
+    assert(std::count(cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia + sa), 7) == 0);
+    assert(std::count(cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia), 2) == 0);
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/count_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/count_if.pass.cpp
new file mode 100644
index 0000000..176d6b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/count_if.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr Iter::difference_type   // constexpr after C++17
+//   count_if(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct eq {
+    TEST_CONSTEXPR eq (int val) : v(val) {}
+    TEST_CONSTEXPR bool operator () (int v2) const { return v == v2; }
+    int v;
+    };
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    int ib[] = {1, 2, 3, 4, 5, 6};
+    return    (std::count_if(std::begin(ia), std::end(ia), eq(2)) == 3)
+           && (std::count_if(std::begin(ib), std::end(ib), eq(9)) == 0)
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::count_if(cpp17_input_iterator<const int*>(ia),
+                         cpp17_input_iterator<const int*>(ia + sa),
+                         eq(2)) == 3);
+    assert(std::count_if(cpp17_input_iterator<const int*>(ia),
+                         cpp17_input_iterator<const int*>(ia + sa),
+                         eq(7)) == 0);
+    assert(std::count_if(cpp17_input_iterator<const int*>(ia),
+                         cpp17_input_iterator<const int*>(ia),
+                         eq(2)) == 0);
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/ranges.count.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/ranges.count.pass.cpp
new file mode 100644
index 0000000..b2ad016
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/ranges.count.pass.cpp
@@ -0,0 +1,264 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class T, class Proj = identity>
+//   requires indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
+//   constexpr iter_difference_t<I>
+//     ranges::count(I first, S last, const T& value, Proj proj = {});
+// template<input_range R, class T, class Proj = identity>
+//   requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T*>
+//   constexpr range_difference_t<R>
+//     ranges::count(R&& r, const T& value, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct NotEqualityComparable {
+  bool operator==(NotEqualityComparable&&) const;
+  bool operator==(NotEqualityComparable&) const;
+  bool operator==(const NotEqualityComparable&&) const;
+};
+
+template <class It, class Sent = It>
+concept HasCountIt = requires(It it, Sent sent) { std::ranges::count(it, sent, *it); };
+static_assert(HasCountIt<int*>);
+static_assert(!HasCountIt<NotEqualityComparable*>);
+static_assert(!HasCountIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasCountIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasCountIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasCountIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasCountIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+static_assert(!HasCountIt<int*, int>);
+static_assert(!HasCountIt<int, int*>);
+
+template <class Range, class ValT>
+concept HasCountR = requires(Range r) { std::ranges::count(r, ValT{}); };
+static_assert(HasCountR<std::array<int, 1>, int>);
+static_assert(!HasCountR<int, int>);
+static_assert(!HasCountR<std::array<NotEqualityComparable, 1>, NotEqualityComparable>);
+static_assert(!HasCountR<InputRangeNotDerivedFrom, int>);
+static_assert(!HasCountR<InputRangeNotIndirectlyReadable, int>);
+static_assert(!HasCountR<InputRangeNotInputOrOutputIterator, int>);
+static_assert(!HasCountR<InputRangeNotSentinelSemiregular, int>);
+static_assert(!HasCountR<InputRangeNotSentinelEqualityComparableWith, int>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  {
+    // simple test
+    {
+      int a[] = {1, 2, 3, 4};
+      std::same_as<std::ptrdiff_t> auto ret = std::ranges::count(It(a), Sent(It(a + 4)), 3);
+      assert(ret == 1);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+      std::same_as<std::ptrdiff_t> auto ret = std::ranges::count(range, 3);
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that an empty range works
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::count(It(a.data()), Sent(It(a.data() + a.size())), 1);
+      assert(ret == 0);
+    }
+    {
+      std::array<int, 0> a = {};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count(range, 1);
+      assert(ret == 0);
+    }
+  }
+
+  {
+    // check that a range with a single element works
+    {
+      std::array a = {2};
+      auto ret = std::ranges::count(It(a.data()), Sent(It(a.data() + a.size())), 2);
+      assert(ret == 1);
+    }
+    {
+      std::array a = {2};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count(range, 2);
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that 0 is returned with no match
+    {
+      std::array a = {1, 1, 1};
+      auto ret = std::ranges::count(It(a.data()), Sent(It(a.data() + a.size())), 0);
+      assert(ret == 0);
+    }
+    {
+      std::array a = {1, 1, 1};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count(range, 0);
+      assert(ret == 0);
+    }
+  }
+
+  {
+    // check that more than one element is counted
+    {
+      std::array a = {3, 3, 4, 3, 3};
+      auto ret = std::ranges::count(It(a.data()), Sent(It(a.data() + a.size())), 3);
+      assert(ret == 4);
+    }
+    {
+      std::array a = {3, 3, 4, 3, 3};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count(range, 3);
+      assert(ret == 4);
+    }
+  }
+
+  {
+    // check that all elements are counted
+    {
+      std::array a = {5, 5, 5, 5};
+      auto ret = std::ranges::count(It(a.data()), Sent(It(a.data() + a.size())), 5);
+      assert(ret == 4);
+    }
+    {
+      std::array a = {5, 5, 5, 5};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count(range, 5);
+      assert(ret == 4);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<const int*>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  {
+    // check that projections are used properly and that they are called with the iterator directly
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::count(a, a + 4, a + 3, [](int& i) { return &i; });
+      assert(ret == 1);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::count(a, a + 3, [](int& i) { return &i; });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that std::invoke is used
+    struct S { int i; };
+    S a[] = { S{1}, S{3}, S{2} };
+    std::same_as<std::ptrdiff_t> auto ret = std::ranges::count(a, 4, &S::i);
+    assert(ret == 0);
+  }
+
+  {
+    // count invocations of the projection
+    {
+      int a[] = {1, 2, 3, 4};
+      int projection_count = 0;
+      auto ret = std::ranges::count(a, a + 4, 2, [&](int i) { ++projection_count; return i; });
+      assert(ret == 1);
+      assert(projection_count == 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int projection_count = 0;
+      auto ret = std::ranges::count(a, 2, [&](int i) { ++projection_count; return i; });
+      assert(ret == 1);
+      assert(projection_count == 4);
+    }
+  }
+
+  {
+    // check that an immobile type works
+    struct NonMovable {
+      NonMovable(const NonMovable&) = delete;
+      NonMovable(NonMovable&&) = delete;
+      constexpr NonMovable(int i_) : i(i_) {}
+      int i;
+
+      bool operator==(const NonMovable&) const = default;
+    };
+    {
+      NonMovable a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count(a, a + 4, NonMovable(8));
+      assert(ret == 1);
+    }
+    {
+      NonMovable a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count(a, NonMovable(8));
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that difference_type is used
+    struct DiffTypeIterator {
+      using difference_type = signed char;
+      using value_type = int;
+
+      int* it = nullptr;
+
+      constexpr DiffTypeIterator() = default;
+      constexpr DiffTypeIterator(int* i) : it(i) {}
+
+      constexpr int& operator*() const { return *it; }
+      constexpr DiffTypeIterator& operator++() { ++it; return *this; }
+      constexpr void operator++(int) { ++it; }
+
+      bool operator==(const DiffTypeIterator&) const = default;
+    };
+
+    {
+      int a[] = {5, 5, 4, 3, 2, 1};
+      std::same_as<signed char> decltype(auto) ret =
+          std::ranges::count(DiffTypeIterator(a), DiffTypeIterator(a + 6), 4);
+      assert(ret == 1);
+    }
+    {
+      int a[] = {5, 5, 4, 3, 2, 1};
+      auto range = std::ranges::subrange(DiffTypeIterator(a), DiffTypeIterator(a + 6));
+      std::same_as<signed char> decltype(auto) ret = std::ranges::count(range, 4);
+      assert(ret == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/ranges.count_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/ranges.count_if.pass.cpp
new file mode 100644
index 0000000..df34618
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.count/ranges.count_if.pass.cpp
@@ -0,0 +1,322 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr iter_difference_t<I>
+//     ranges::count_if(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr range_difference_t<R>
+//     ranges::count_if(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct Predicate {
+  bool operator()(int);
+};
+
+template <class It, class Sent = It>
+concept HasCountIfIt = requires(It it, Sent sent) { std::ranges::count_if(it, sent, Predicate{}); };
+static_assert(HasCountIfIt<int*>);
+static_assert(!HasCountIfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasCountIfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasCountIfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasCountIfIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasCountIfIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+static_assert(!HasCountIfIt<int*, int>);
+static_assert(!HasCountIfIt<int, int*>);
+
+template <class Pred>
+concept HasCountIfPred = requires(int* it, Pred pred) {std::ranges::count_if(it, it, pred); };
+
+static_assert(!HasCountIfPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasCountIfPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class R>
+concept HasCountIfR = requires(R r) { std::ranges::count_if(r, Predicate{}); };
+static_assert(HasCountIfR<std::array<int, 0>>);
+static_assert(!HasCountIfR<int>);
+static_assert(!HasCountIfR<InputRangeNotDerivedFrom>);
+static_assert(!HasCountIfR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasCountIfR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasCountIfR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasCountIfR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  {
+    // simple test
+    {
+      int a[] = {1, 2, 3, 4};
+      std::same_as<std::ptrdiff_t> auto ret =
+        std::ranges::count_if(It(a), Sent(It(a + 4)), [](int x) { return x == 4; });
+      assert(ret == 1);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+      std::same_as<std::ptrdiff_t> auto ret =
+        std::ranges::count_if(range, [](int x) { return x == 4; });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that an empty range works
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::count_if(It(a.data()), Sent(It(a.data() + a.size())), [](int) { return true; });
+      assert(ret == 0);
+    }
+    {
+      std::array<int, 0> a = {};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count_if(range, [](int) { return true; });
+      assert(ret == 0);
+    }
+  }
+
+  {
+    // check that a range with a single element works
+    {
+      std::array a = {2};
+      auto ret = std::ranges::count_if(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i == 2; });
+      assert(ret == 1);
+    }
+    {
+      std::array a = {2};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count_if(range, [](int i) { return i == 2; });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that 0 is returned with no match
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::count_if(It(a), Sent(It(a + 3)), [](int) { return false; });
+      assert(ret == 0);
+    }
+    {
+      int a[] = {1, 1, 1};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 3)));
+      auto ret = std::ranges::count_if(range, [](int){ return false; });
+      assert(ret == 0);
+    }
+  }
+
+  {
+    // check that more than one element is counted
+    {
+      std::array a = {3, 3, 4, 3, 3};
+      auto ret = std::ranges::count_if(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i == 3; });
+      assert(ret == 4);
+    }
+    {
+      std::array a = {3, 3, 4, 3, 3};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count_if(range, [](int i) { return i == 3; });
+      assert(ret == 4);
+    }
+  }
+
+  {
+    // check that all elements are counted
+    {
+      std::array a = {5, 5, 5, 5};
+      auto ret = std::ranges::count_if(It(a.data()), Sent(It(a.data() + a.size())), [](int) { return true; });
+      assert(ret == 4);
+    }
+    {
+      std::array a = {5, 5, 5, 5};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      auto ret = std::ranges::count_if(range, [](int) { return true; });
+      assert(ret == 4);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<const int*>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  {
+    // check that projections are used properly and that they are called with the iterator directly
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::count_if(a, a + 4, [&](int* i) { return i == a + 3; }, [](int& i) { return &i; });
+      assert(ret == 1);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::count_if(a, [&](int* i) { return i == a + 3; }, [](int& i) { return &i; });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that std::invoke is used
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::count_if(a, [](int i){ return i == 0; }, &S::comp);
+      assert(ret == 3);
+    }
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::count_if(a, a + 3, [](int i) { return i == 0; }, &S::comp);
+      assert(ret == 3);
+    }
+  }
+
+  {
+    // check projection and predicate invocation count
+    {
+      int a[] = {1, 2, 3, 4};
+      int predicate_count = 0;
+      int projection_count = 0;
+      auto ret = std::ranges::count_if(a, a + 4,
+                                       [&](int i) { ++predicate_count; return i == 2; },
+                                       [&](int i) { ++projection_count; return i; });
+      assert(ret == 1);
+      assert(predicate_count == 4);
+      assert(projection_count == 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int predicate_count = 0;
+      int projection_count = 0;
+      auto ret = std::ranges::count_if(a,
+                                       [&](int i) { ++predicate_count; return i == 2; },
+                                       [&](int i) { ++projection_count; return i; });
+      assert(ret == 1);
+      assert(predicate_count == 4);
+      assert(projection_count == 4);
+    }
+  }
+
+  {
+    // check that an immobile type works
+    struct NonMovable {
+      NonMovable(const NonMovable&) = delete;
+      NonMovable(NonMovable&&) = delete;
+      constexpr NonMovable(int i_) : i(i_) {}
+      int i;
+
+      bool operator==(const NonMovable&) const = default;
+    };
+    {
+      NonMovable a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count_if(a, a + 4, [](const NonMovable& i) { return i == NonMovable(8); });
+      assert(ret == 1);
+    }
+    {
+      NonMovable a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count_if(a, [](const NonMovable& i) { return i == NonMovable(8); });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that difference_type is used
+    struct DiffTypeIterator {
+      using difference_type = signed char;
+      using value_type = int;
+
+      int* it = nullptr;
+
+      constexpr DiffTypeIterator() = default;
+      constexpr DiffTypeIterator(int* i) : it(i) {}
+
+      constexpr int& operator*() const { return *it; }
+      constexpr DiffTypeIterator& operator++() { ++it; return *this; }
+      constexpr void operator++(int) { ++it; }
+
+      bool operator==(const DiffTypeIterator&) const = default;
+    };
+
+    {
+      int a[] = {5, 5, 4, 3, 2, 1};
+      std::same_as<signed char> auto ret =
+          std::ranges::count_if(DiffTypeIterator(a), DiffTypeIterator(a + 6), [](int& i) { return i == 4; });
+      assert(ret == 1);
+    }
+    {
+      int a[] = {5, 5, 4, 3, 2, 1};
+      auto range = std::ranges::subrange(DiffTypeIterator(a), DiffTypeIterator(a + 6));
+      std::same_as<signed char> auto ret = std::ranges::count_if(range, [](int& i) { return i == 4; });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that the predicate can take the argument by lvalue ref
+    {
+      int a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count_if(a, a + 4, [](int& i) { return i == 8; });
+      assert(ret == 1);
+    }
+    {
+      int a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count_if(a, [](int& i) { return i == 8; });
+      assert(ret == 1);
+    }
+  }
+
+  {
+    // check that the predicate isn't made const
+    struct MutablePredicate {
+      constexpr bool operator()(int i) & { return i == 8; }
+      constexpr bool operator()(int i) && { return i == 8; }
+    };
+    {
+      int a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count_if(a, a + 4, MutablePredicate{});
+      assert(ret == 1);
+    }
+    {
+      int a[] = {9, 8, 4, 3};
+      auto ret = std::ranges::count_if(a, MutablePredicate{});
+      assert(ret == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/equal.pass.cpp
new file mode 100644
index 0000000..dfa425d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/equal.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2>
+//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
+//   constexpr bool     // constexpr after c++17
+//   equal(Iter1 first1, Iter1 last1, Iter2 first2);
+//
+// Introduced in C++14:
+// template<InputIterator Iter1, InputIterator Iter2>
+//   constexpr bool     // constexpr after c++17
+//   equal(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2 = Iter1>
+void test_equal() {
+  int a[]          = {0, 1, 2, 3, 4, 5};
+  const unsigned s = sizeof(a) / sizeof(a[0]);
+  int b[s]         = {0, 1, 2, 5, 4, 5};
+
+  assert(std::equal(Iter1(a), Iter1(a + s), Iter2(a)));
+  assert(std::equal(Iter2(a), Iter2(a + s), Iter1(a)));
+  assert(!std::equal(Iter1(a), Iter1(a + s), Iter2(b)));
+
+#if TEST_STD_VER >= 14
+  assert(std::equal(Iter1(a), Iter1(a + s), Iter2(a), Iter2(a + s)));
+  assert(std::equal(Iter2(a), Iter2(a + s), Iter1(a), Iter1(a + s)));
+  assert(!std::equal(Iter1(a), Iter1(a + s), Iter2(a), Iter2(a + s - 1)));
+  assert(!std::equal(Iter1(a), Iter1(a + s), Iter2(b), Iter2(b + s)));
+#endif
+}
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int ib[] = {1, 3};
+    int ic[] = {1, 3, 5, 7};
+    typedef cpp17_input_iterator<int*>         II;
+    typedef bidirectional_iterator<int*> BI;
+
+    return !std::equal(std::begin(ia), std::end(ia), std::begin(ic))
+        && !std::equal(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic))
+        &&  std::equal(std::begin(ib), std::end(ib), std::begin(ic))
+        && !std::equal(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic))
+
+        &&  std::equal(II(std::begin(ib)), II(std::end(ib)), II(std::begin(ic)))
+        && !std::equal(BI(std::begin(ib)), BI(std::end(ib)), BI(std::begin(ic)), BI(std::end(ic)))
+        ;
+    }
+#endif
+
+
+int main(int, char**)
+{
+  test_equal<cpp17_input_iterator<const int*> >();
+  test_equal<random_access_iterator<const int*> >();
+
+  // Test all combinations of cv-qualifiers:
+  test_equal<int*>();
+  test_equal<int*, const int*>();
+  test_equal<int*, volatile int*>();
+  test_equal<int*, const volatile int*>();
+  test_equal<const int*>();
+  test_equal<const int*, volatile int*>();
+  test_equal<const int*, const volatile int*>();
+  test_equal<volatile int*>();
+  test_equal<volatile int*, const volatile int*>();
+  test_equal<const volatile int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/equal_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/equal_pred.pass.cpp
new file mode 100644
index 0000000..8752b92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/equal_pred.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2,
+//          Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr bool     // constexpr after c++17
+//   equal(Iter1 first1, Iter1 last1, Iter2 first2, Pred pred);
+//
+// Introduced in C++14:
+// template<InputIterator Iter1, InputIterator Iter2,
+//          Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr bool     // constexpr after c++17
+//   equal(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2, Pred pred);
+
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool eq(int a, int b) { return a == b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int ib[] = {1, 3};
+    int ic[] = {1, 3, 5, 7};
+    typedef cpp17_input_iterator<int*>         II;
+    typedef bidirectional_iterator<int*> BI;
+
+    return !std::equal(std::begin(ia), std::end(ia), std::begin(ic)              , eq)
+        && !std::equal(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic), eq)
+        &&  std::equal(std::begin(ib), std::end(ib), std::begin(ic)              , eq)
+        && !std::equal(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic), eq)
+
+        &&  std::equal(II(std::begin(ib)), II(std::end(ib)), II(std::begin(ic))                  , eq)
+        && !std::equal(BI(std::begin(ib)), BI(std::end(ib)), BI(std::begin(ic)), BI(std::end(ic)), eq)
+        ;
+    }
+#endif
+
+
+int comparison_count = 0;
+template <typename T>
+bool counting_equals ( const T &a, const T &b ) {
+    ++comparison_count;
+    return a == b;
+}
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned s = sizeof(ia)/sizeof(ia[0]);
+    int ib[s] = {0, 1, 2, 5, 4, 5};
+    assert(std::equal(cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia+s),
+                      cpp17_input_iterator<const int*>(ia),
+                      std::equal_to<int>()));
+#if TEST_STD_VER >= 14
+    assert(std::equal(cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia+s),
+                      cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia+s),
+                      std::equal_to<int>()));
+    assert(std::equal(random_access_iterator<const int*>(ia),
+                      random_access_iterator<const int*>(ia+s),
+                      random_access_iterator<const int*>(ia),
+                      random_access_iterator<const int*>(ia+s),
+                      std::equal_to<int>()));
+
+    comparison_count = 0;
+    assert(!std::equal(cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia+s),
+                      cpp17_input_iterator<const int*>(ia),
+                      cpp17_input_iterator<const int*>(ia+s-1),
+                      counting_equals<int>));
+    assert(comparison_count > 0);
+    comparison_count = 0;
+    assert(!std::equal(random_access_iterator<const int*>(ia),
+                      random_access_iterator<const int*>(ia+s),
+                      random_access_iterator<const int*>(ia),
+                      random_access_iterator<const int*>(ia+s-1),
+                      counting_equals<int>));
+    assert(comparison_count == 0);
+#endif
+    assert(!std::equal(cpp17_input_iterator<const int*>(ia),
+                       cpp17_input_iterator<const int*>(ia+s),
+                       cpp17_input_iterator<const int*>(ib),
+                       std::equal_to<int>()));
+#if TEST_STD_VER >= 14
+    assert(!std::equal(cpp17_input_iterator<const int*>(ia),
+                       cpp17_input_iterator<const int*>(ia+s),
+                       cpp17_input_iterator<const int*>(ib),
+                       cpp17_input_iterator<const int*>(ib+s),
+                       std::equal_to<int>()));
+    assert(!std::equal(random_access_iterator<const int*>(ia),
+                       random_access_iterator<const int*>(ia+s),
+                       random_access_iterator<const int*>(ib),
+                       random_access_iterator<const int*>(ib+s),
+                       std::equal_to<int>()));
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/ranges.equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/ranges.equal.pass.cpp
new file mode 100644
index 0000000..9e9f82e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.equal/ranges.equal.pass.cpp
@@ -0,0 +1,374 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
+//   constexpr bool ranges::equal(I1 first1, S1 last1, I2 first2, S2 last2,
+//                                Pred pred = {},
+//                                Proj1 proj1 = {}, Proj2 proj2 = {});
+// template<input_range R1, input_range R2, class Pred = ranges::equal_to,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
+//   constexpr bool ranges::equal(R1&& r1, R2&& r2, Pred pred = {},
+//                                Proj1 proj1 = {}, Proj2 proj2 = {});
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Sent1 = sentinel_wrapper<Iter1>,
+          class Iter2 = Iter1, class Sent2 = sentinel_wrapper<Iter2>>
+concept HasEqualIt = requires (Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2) {
+  std::ranges::equal(first1, last1, first2, last2);
+};
+
+static_assert(HasEqualIt<int*>);
+static_assert(!HasEqualIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasEqualIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasEqualIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasEqualIt<int*, int*, InputIteratorNotDerivedFrom>);
+static_assert(!HasEqualIt<int*, int*, InputIteratorNotIndirectlyReadable>);
+static_assert(!HasEqualIt<int*, int*, InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasEqualIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasEqualIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasEqualIt<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasEqualIt<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasEqualIt<int*, int*, int**>);
+
+template <class Range1, class Range2>
+concept HasEqualR = requires (Range1 range1, Range2 range2) {
+  std::ranges::equal(range1, range2);
+};
+
+static_assert(HasEqualR<UncheckedRange<int*>, UncheckedRange<int*>>);
+static_assert(!HasEqualR<InputRangeNotDerivedFrom, UncheckedRange<int*>>);
+static_assert(!HasEqualR<InputRangeNotIndirectlyReadable, UncheckedRange<int*>>);
+static_assert(!HasEqualR<InputRangeNotInputOrOutputIterator, UncheckedRange<int*>>);
+static_assert(!HasEqualR<InputRangeNotSentinelSemiregular, UncheckedRange<int*>>);
+static_assert(!HasEqualR<InputRangeNotSentinelEqualityComparableWith, UncheckedRange<int*>>);
+static_assert(!HasEqualR<UncheckedRange<int*>, InputRangeNotDerivedFrom>);
+static_assert(!HasEqualR<UncheckedRange<int*>, InputRangeNotIndirectlyReadable>);
+static_assert(!HasEqualR<UncheckedRange<int*>, InputRangeNotInputOrOutputIterator>);
+static_assert(!HasEqualR<UncheckedRange<int*>, InputRangeNotSentinelSemiregular>);
+static_assert(!HasEqualR<UncheckedRange<int*>, InputRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasEqualR<UncheckedRange<int*>, UncheckedRange<int**>>);
+
+template <class Iter1, class Sent1, class Iter2, class Sent2 = Iter2>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4};
+      int b[] = {1, 2, 3, 4};
+      std::same_as<bool> decltype(auto) ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 4)),
+                                                                 Iter2(b), Sent2(Iter2(b + 4)));
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int b[] = {1, 2, 3, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 4)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 4)));
+      std::same_as<bool> decltype(auto) ret = std::ranges::equal(range1, range2);
+      assert(ret);
+    }
+  }
+
+  { // check that the predicate is used (return true)
+    {
+      int a[] = {1, 2, 3, 4};
+      int b[] = {2, 3, 4, 5};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 4)), Iter2(b), Sent2(Iter2(b + 4)),
+                                    [](int l, int r) { return l != r; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int b[] = {2, 3, 4, 5};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 4)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 4)));
+      auto ret = std::ranges::equal(range1, range2, [](int l, int r) { return l != r; });
+      assert(ret);
+    }
+  }
+
+  { // check that the predicate is used (return false)
+    {
+      int a[] = {1, 2, 3, 4};
+      int b[] = {2, 3, 3, 5};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 4)), Iter2(b), Sent2(Iter2(b + 4)),
+                                    [](int l, int r) { return l != r; });
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int b[] = {2, 3, 3, 5};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 4)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 4)));
+      auto ret = std::ranges::equal(range1, range2, [](int l, int r) { return l != r; });
+      assert(!ret);
+    }
+  }
+
+  { // check that the projections are used
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[] = {6, 10, 14, 18, 22};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 5)),
+                                    Iter2(b), Sent2(Iter2(b + 5)),
+                                    {},
+                                    [](int i) { return i * 4; },
+                                    [](int i) { return i - 2; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[] = {6, 10, 14, 18, 22};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 5)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 5)));
+      auto ret = std::ranges::equal(range1,
+                                    range2,
+                                    {},
+                                    [](int i) { return i * 4; },
+                                    [](int i) { return i - 2; });
+      assert(ret);
+    }
+  }
+
+  { // check that different sized ranges work
+    {
+      int a[] = {4, 3, 2, 1};
+      int b[] = {4, 3, 2, 1, 5, 6, 7};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 4)), Iter2(b), Sent2(Iter2(b + 7)));
+      assert(!ret);
+    }
+    {
+      int a[] = {4, 3, 2, 1};
+      int b[] = {4, 3, 2, 1, 5, 6, 7};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 4)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 7)));
+      auto ret = std::ranges::equal(range1, range2);
+      assert(!ret);
+    }
+  }
+
+  { // check that two ranges with the same size but different values are different
+    {
+      int a[] = {4, 6, 34, 76, 5};
+      int b[] = {4, 6, 34, 67, 5};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 5)), Iter2(b), Sent2(Iter2(b + 5)));
+      assert(!ret);
+    }
+    {
+      int a[] = {4, 6, 34, 76, 5};
+      int b[] = {4, 6, 34, 67, 5};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 5)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 5)));
+      auto ret = std::ranges::equal(range1, range2);
+      assert(!ret);
+    }
+  }
+
+  { // check that two empty ranges work
+    {
+      int a[] = {};
+      int b[] = {};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a)), Iter2(b), Sent2(Iter2(b)));
+      assert(ret);
+    }
+    {
+      int a[] = {};
+      int b[] = {};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b)));
+      auto ret = std::ranges::equal(range1, range2);
+      assert(ret);
+    }
+  }
+
+  { // check that it works with the first range empty
+    {
+      int a[] = {};
+      int b[] = {1, 2};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a)), Iter2(b), Sent2(Iter2(b + 2)));
+      assert(!ret);
+    }
+    {
+      int a[] = {};
+      int b[] = {1, 2};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b + 2)));
+      auto ret = std::ranges::equal(range1, range2);
+      assert(!ret);
+    }
+  }
+
+  { // check that it works with the second range empty
+    {
+      int a[] = {1, 2};
+      int b[] = {};
+      auto ret = std::ranges::equal(Iter1(a), Sent1(Iter1(a + 2)), Iter2(b), Sent2(Iter2(b)));
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 2};
+      int b[] = {};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 2)));
+      auto range2 = std::ranges::subrange(Iter2(b), Sent2(Iter2(b)));
+      auto ret = std::ranges::equal(range1, range2);
+      assert(!ret);
+    }
+  }
+}
+
+template<class Iter1, class Sent1 = Iter1>
+constexpr void test_iterators2() {
+  test_iterators<Iter1, Sent1, cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, forward_iterator<int*>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>>();
+  test_iterators<Iter1, Sent1, int*>();
+  test_iterators<Iter1, Sent1, const int*>();
+}
+
+constexpr bool test() {
+  test_iterators2<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators2<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators2<forward_iterator<int*>>();
+  test_iterators2<bidirectional_iterator<int*>>();
+  test_iterators2<random_access_iterator<int*>>();
+  test_iterators2<contiguous_iterator<int*>>();
+  test_iterators2<int*>();
+  test_iterators2<const int*>();
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      constexpr bool equal(int o) { return i == o; }
+      constexpr S& identity() { return *this; }
+      int i;
+    };
+    {
+      S a[] = {7, 8, 9};
+      S b[] = {7, 8, 9};
+      auto ret = std::ranges::equal(a, a + 3, b, b + 3, &S::equal, &S::identity, &S::i);
+      assert(ret);
+    }
+    {
+      S a[] = {7, 8, 9};
+      S b[] = {7, 8, 9};
+      auto ret = std::ranges::equal(a, b, &S::equal, &S::identity, &S::i);
+      assert(ret);
+    }
+  }
+
+  { // check that the complexity requirements are met
+    { // different size
+      {
+        int a[] = {1, 2, 3};
+        int b[] = {1, 2, 3, 4};
+        int predCount = 0;
+        int projCount = 0;
+        auto pred = [&](int l, int r) { ++predCount; return l == r; };
+        auto proj = [&](int i) { ++projCount; return i; };
+        auto ret = std::ranges::equal(a, a + 3, b, b + 4, pred, proj, proj);
+        assert(!ret);
+        assert(predCount == 0);
+        assert(projCount == 0);
+      }
+      {
+        int a[] = {1, 2, 3};
+        int b[] = {1, 2, 3, 4};
+        int predCount = 0;
+        int projCount = 0;
+        auto pred = [&](int l, int r) { ++predCount; return l == r; };
+        auto proj = [&](int i) { ++projCount; return i; };
+        auto ret = std::ranges::equal(a, b, pred, proj, proj);
+        assert(!ret);
+        assert(predCount == 0);
+        assert(projCount == 0);
+      }
+    }
+
+    { // not a sized sentinel
+      {
+        int a[] = {1, 2, 3};
+        int b[] = {1, 2, 3, 4};
+        int predCount = 0;
+        int projCount = 0;
+        auto pred = [&](int l, int r) { ++predCount; return l == r; };
+        auto proj = [&](int i) { ++projCount; return i; };
+        auto ret = std::ranges::equal(a, sentinel_wrapper(a + 3), b, sentinel_wrapper(b + 4), pred, proj, proj);
+        assert(!ret);
+        assert(predCount <= 4);
+        assert(projCount <= 7);
+      }
+      {
+        int a[] = {1, 2, 3};
+        int b[] = {1, 2, 3, 4};
+        int predCount = 0;
+        int projCount = 0;
+        auto pred = [&](int l, int r) { ++predCount; return l == r; };
+        auto proj = [&](int i) { ++projCount; return i; };
+        auto range1 = std::ranges::subrange(a, sentinel_wrapper(a + 3));
+        auto range2 = std::ranges::subrange(b, sentinel_wrapper(b + 4));
+        auto ret = std::ranges::equal(range1, range2, pred, proj, proj);
+        assert(!ret);
+        assert(predCount <= 4);
+        assert(projCount <= 7);
+      }
+    }
+
+    { // same size
+      {
+        int a[] = {1, 2, 3};
+        int b[] = {1, 2, 3};
+        int predCount = 0;
+        int projCount = 0;
+        auto pred = [&](int l, int r) { ++predCount; return l == r; };
+        auto proj = [&](int i) { ++projCount; return i; };
+        auto ret = std::ranges::equal(a, a + 3, b, b + 3, pred, proj, proj);
+        assert(ret);
+        assert(predCount == 3);
+        assert(projCount == 6);
+      }
+      {
+        int a[] = {1, 2, 3};
+        int b[] = {1, 2, 3};
+        int predCount = 0;
+        int projCount = 0;
+        auto pred = [&](int l, int r) { ++predCount; return l == r; };
+        auto proj = [&](int i) { ++projCount; return i; };
+        auto ret = std::ranges::equal(a, b, pred, proj, proj);
+        assert(ret);
+        assert(predCount == 3);
+        assert(projCount == 6);
+      }
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/find_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/find_end.pass.cpp
new file mode 100644
index 0000000..3060528
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/find_end.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter1, ForwardIterator Iter2>
+//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
+//   constexpr Iter1  // constexpr after C++17
+//   find_end(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2};
+    int ib[] = {4, 5, 6};
+    int ic[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 2, 0, 1, 0};
+    typedef forward_iterator<int*>       FI;
+    typedef bidirectional_iterator<int*> BI;
+    typedef random_access_iterator<int*> RI;
+
+    return    (std::find_end(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ia)), FI(std::end(ia))) == FI(ic+15))
+           && (std::find_end(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ib)), FI(std::end(ib))) == FI(std::end(ic)))
+           && (std::find_end(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ia)), BI(std::end(ia))) == BI(ic+15))
+           && (std::find_end(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ib)), BI(std::end(ib))) == BI(std::end(ic)))
+           && (std::find_end(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ia)), RI(std::end(ia))) == RI(ic+15))
+           && (std::find_end(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ib)), RI(std::end(ib))) == RI(std::end(ic)))
+           ;
+    }
+#endif
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 2, 0, 1, 0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int b[] = {0};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(b), Iter2(b+1)) == Iter1(ia+sa-1));
+    int c[] = {0, 1};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(c), Iter2(c+2)) == Iter1(ia+18));
+    int d[] = {0, 1, 2};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(d), Iter2(d+3)) == Iter1(ia+15));
+    int e[] = {0, 1, 2, 3};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(e), Iter2(e+4)) == Iter1(ia+11));
+    int f[] = {0, 1, 2, 3, 4};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(f), Iter2(f+5)) == Iter1(ia+6));
+    int g[] = {0, 1, 2, 3, 4, 5};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(g), Iter2(g+6)) == Iter1(ia));
+    int h[] = {0, 1, 2, 3, 4, 5, 6};
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(h), Iter2(h+7)) == Iter1(ia+sa));
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(b), Iter2(b)) == Iter1(ia+sa));
+    assert(std::find_end(Iter1(ia), Iter1(ia), Iter2(b), Iter2(b+1)) == Iter1(ia));
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/find_end_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/find_end_pred.pass.cpp
new file mode 100644
index 0000000..7358cf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/find_end_pred.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter1, ForwardIterator Iter2,
+//          Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr Iter1  // constexpr after C++17
+//   find_end(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    TEST_CONSTEXPR_CXX14 bool operator()(const T& x, const T& y)
+        {++count; return x == y;}
+};
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+    int ia[] = {0, 1, 2};
+    int ib[] = {4, 5, 6};
+    int ic[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 2, 0, 1, 0};
+    typedef forward_iterator<int*>       FI;
+    typedef bidirectional_iterator<int*> BI;
+    typedef random_access_iterator<int*> RI;
+    std::equal_to<int> eq{};
+    return    (std::find_end(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ia)), FI(std::end(ia)), eq) == FI(ic+15))
+           && (std::find_end(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ib)), FI(std::end(ib)), eq) == FI(std::end(ic)))
+           && (std::find_end(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ia)), BI(std::end(ia)), eq) == BI(ic+15))
+           && (std::find_end(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ib)), BI(std::end(ib)), eq) == BI(std::end(ic)))
+           && (std::find_end(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ia)), RI(std::end(ia)), eq) == RI(ic+15))
+           && (std::find_end(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ib)), RI(std::end(ib)), eq) == RI(std::end(ic)))
+           ;
+    }
+#endif
+
+unsigned count_equal::count = 0;
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 0, 1, 2, 3, 0, 1, 2, 0, 1, 0};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int b[] = {0};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(b), Iter2(b+1), count_equal()) == Iter1(ia+sa-1));
+    assert(count_equal::count <= 1*(sa-1+1));
+    int c[] = {0, 1};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(c), Iter2(c+2), count_equal()) == Iter1(ia+18));
+    assert(count_equal::count <= 2*(sa-2+1));
+    int d[] = {0, 1, 2};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(d), Iter2(d+3), count_equal()) == Iter1(ia+15));
+    assert(count_equal::count <= 3*(sa-3+1));
+    int e[] = {0, 1, 2, 3};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(e), Iter2(e+4), count_equal()) == Iter1(ia+11));
+    assert(count_equal::count <= 4*(sa-4+1));
+    int f[] = {0, 1, 2, 3, 4};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(f), Iter2(f+5), count_equal()) == Iter1(ia+6));
+    assert(count_equal::count <= 5*(sa-5+1));
+    int g[] = {0, 1, 2, 3, 4, 5};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(g), Iter2(g+6), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= 6*(sa-6+1));
+    int h[] = {0, 1, 2, 3, 4, 5, 6};
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(h), Iter2(h+7), count_equal()) == Iter1(ia+sa));
+    assert(count_equal::count <= 7*(sa-7+1));
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia+sa), Iter2(b), Iter2(b), count_equal()) == Iter1(ia+sa));
+    assert(count_equal::count <= 0);
+    count_equal::count = 0;
+    assert(std::find_end(Iter1(ia), Iter1(ia), Iter2(b), Iter2(b+1), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= 0);
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/ranges.find_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/ranges.find_end.pass.cpp
new file mode 100644
index 0000000..d826ff6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.end/ranges.find_end.pass.cpp
@@ -0,0 +1,353 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I1, sentinel_for<I1> S1, forward_iterator I2, sentinel_for<I2> S2,
+//          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
+//   constexpr subrange<I1>
+//     ranges::find_end(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {},
+//                      Proj1 proj1 = {}, Proj2 proj2 = {});
+// template<forward_range R1, forward_range R2,
+//          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
+//   constexpr borrowed_subrange_t<R1>
+//     ranges::find_end(R1&& r1, R2&& r2, Pred pred = {},
+//                      Proj1 proj1 = {}, Proj2 proj2 = {});
+
+#include <algorithm>
+#include <array>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Sent1 = Iter1, class Iter2 = int*, class Sent2 = Iter2>
+concept HasFindEndIt = requires (Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2) {
+  std::ranges::find_end(first1, last1, first2, last2);
+};
+
+static_assert(HasFindEndIt<int*>);
+static_assert(!HasFindEndIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasFindEndIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasFindEndIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasFindEndIt<int*, int*, int**>); // not indirectly comparable
+static_assert(!HasFindEndIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasFindEndIt<int*, int*, ForwardIteratorNotDerivedFrom>);
+static_assert(!HasFindEndIt<int*, int*, ForwardIteratorNotIncrementable>);
+static_assert(!HasFindEndIt<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasFindEndIt<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range1, class Range2 = UncheckedRange<int*>>
+concept HasFindEndR = requires (Range1 range1, Range2 range2) {
+  std::ranges::find_end(range1, range2);
+};
+
+static_assert(HasFindEndR<UncheckedRange<int*>>);
+static_assert(!HasFindEndR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasFindEndR<ForwardIteratorNotIncrementable>);
+static_assert(!HasFindEndR<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasFindEndR<ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasFindEndR<UncheckedRange<int*>, UncheckedRange<int**>>); // not indirectly comparable
+static_assert(!HasFindEndR<UncheckedRange<int*>, ForwardRangeNotDerivedFrom>);
+static_assert(!HasFindEndR<UncheckedRange<int*>, ForwardRangeNotIncrementable>);
+static_assert(!HasFindEndR<UncheckedRange<int*>, ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasFindEndR<UncheckedRange<int*>, ForwardRangeNotSentinelEqualityComparableWith>);
+
+template <class Iter1, class Sent1, class Iter2, class Sent2 = Iter2>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      int p[] = {3, 4};
+      std::same_as<std::ranges::subrange<Iter1, Iter1>> decltype(auto) ret =
+          std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 6)), Iter2(p), Sent2(Iter2(p + 2)));
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      int p[] = {3, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 2)));
+      std::same_as<std::ranges::subrange<Iter1, Iter1>> decltype(auto) ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 4);
+    }
+  }
+
+  { // matching part begins at the front
+    {
+      int a[] = {7, 5, 3, 7, 3, 6};
+      int p[] = {7, 5, 3};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 6)), Iter2(p), Sent2(Iter2(p + 3)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {7, 5, 3, 7, 3, 6};
+      int p[] = {7, 5, 3};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // matching part ends at the back
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {4, 8};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 5)), Iter2(p), Sent2(Iter2(p + 2)));
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {4, 8};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 5)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 2)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // pattern does not match
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {1};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 5)), Iter2(p), Sent2(Iter2(p + 1)));
+      assert(base(ret.begin()) == a + 5);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {1};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 5)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 1)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a + 5);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // range and pattern are identical
+    {
+      int a[] = {6, 7, 8, 9};
+      int p[] = {6, 7, 8, 9};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 4)), Iter2(p), Sent2(Iter2(p + 4)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 4);
+    }
+    {
+      int a[] = {6, 7, 8, 9};
+      int p[] = {6, 7, 8, 9};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 4)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 4)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 4);
+    }
+  }
+
+  { // pattern is longer than range
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {6, 7, 8, 9};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 3)), Iter2(p), Sent2(Iter2(p + 4)));
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {6, 7, 8, 9};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 3)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 4)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // pattern has zero length
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 3)), Iter2(p), Sent2(Iter2(p)));
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 3)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // range has zero length
+    {
+      int a[] = {};
+      int p[] = {6, 7, 8};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a)), Iter2(p), Sent2(Iter2(p + 3)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+    {
+      int a[] = {};
+      int p[] = {6, 7, 8};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+  }
+
+  { // check that the first match is returned
+    {
+      int a[] = {6, 7, 8, 6, 7, 8, 6, 7, 8};
+      int p[] = {6, 7, 8};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 9)), Iter2(p), Sent2(Iter2(p + 3)));
+      assert(base(ret.begin()) == a + 6);
+      assert(base(ret.end()) == a + 9);
+    }
+    {
+      int a[] = {6, 7, 8, 6, 7, 8, 6, 7, 8};
+      int p[] = {6, 7, 8};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 9)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::find_end(range1, range2);
+      assert(base(ret.begin()) == a + 6);
+      assert(base(ret.end()) == a + 9);
+    }
+  }
+
+  { // check that the predicate is used
+    {
+      int a[] = {1, 2, 8, 1, 5, 6};
+      int p[] = {7, 0, 4};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 6)),
+                                       Iter2(p), Sent2(Iter2(p + 3)),
+                                       [](int l, int r) { return l > r; });
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {1, 2, 8, 1, 5, 6};
+      int p[] = {7, 0, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::find_end(range1, range2, [](int l, int r) { return l > r; });
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // check that the projections are used
+    {
+      int a[] = {1, 3, 5, 1, 5, 6};
+      int p[] = {2, 3, 4};
+      auto ret = std::ranges::find_end(Iter1(a), Sent1(Iter1(a + 6)),
+                                       Iter2(p), Sent2(Iter2(p + 3)),
+                                       {},
+                                       [](int i) { return i + 3; },
+                                       [](int i) { return i * 2; });
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {1, 3, 5, 1, 5, 6};
+      int p[] = {2, 3, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::find_end(range1,
+                                       range2,
+                                       {},
+                                       [](int i) { return i + 3; },
+                                       [](int i) { return i * 2; });
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+}
+
+template <class Iter1, class Sent1 = Iter1>
+constexpr void test_iterators2() {
+  test_iterators<Iter1, Sent1, forward_iterator<int*>>();
+  test_iterators<Iter1, Sent1, forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, int*>();
+}
+
+constexpr bool test() {
+  test_iterators2<forward_iterator<int*>>();
+  test_iterators2<forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_iterators2<bidirectional_iterator<int*>>();
+  test_iterators2<bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_iterators2<random_access_iterator<int*>>();
+  test_iterators2<random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_iterators2<contiguous_iterator<int*>>();
+  test_iterators2<contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_iterators2<int*>();
+
+  { // check that std::invoke is used
+    struct S {
+      int i;
+
+      constexpr S identity() {
+        return *this;
+      }
+
+      constexpr bool compare(const S& s) {
+        return i == s.i;
+      }
+    };
+    {
+      S a[] = {{1}, {2}, {3}, {4}};
+      S p[] = {{2}, {3}};
+      auto ret = std::ranges::find_end(a, a + 4, p, p + 2, &S::compare, &S::identity, &S::identity);
+      assert(ret.begin() == a + 1);
+      assert(ret.end() == a + 3);
+    }
+    {
+      S a[] = {{1}, {2}, {3}, {4}};
+      S p[] = {{2}, {3}};
+      auto ret = std::ranges::find_end(a, p, &S::compare, &S::identity, &S::identity);
+      assert(ret.begin() == a + 1);
+      assert(ret.end() == a + 3);
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::find_end(std::array {1, 2, 3, 4}, std::array {2, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/find_first_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/find_first_of.pass.cpp
new file mode 100644
index 0000000..6a76ef9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/find_first_of.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, ForwardIterator Iter2>
+//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
+//   constexpr Iter1  // constexpr after C++17
+//   find_first_of(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 2, 3};
+    int ib[] = {7, 8, 9};
+    int ic[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3};
+    typedef forward_iterator<int*>       FI;
+    typedef bidirectional_iterator<int*> BI;
+    typedef random_access_iterator<int*> RI;
+
+    return    (std::find_first_of(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ia)), FI(std::end(ia))) == FI(ic+1))
+           && (std::find_first_of(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ib)), FI(std::end(ib))) == FI(std::end(ic)))
+           && (std::find_first_of(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ia)), BI(std::end(ia))) == BI(ic+1))
+           && (std::find_first_of(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ib)), BI(std::end(ib))) == BI(std::end(ic)))
+           && (std::find_first_of(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ia)), RI(std::end(ia))) == RI(ic+1))
+           && (std::find_first_of(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ib)), RI(std::end(ib))) == RI(std::end(ic)))
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {1, 3, 5, 7};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia + sa),
+                              forward_iterator<const int*>(ib),
+                              forward_iterator<const int*>(ib + sb)) ==
+                              cpp17_input_iterator<const int*>(ia+1));
+    int ic[] = {7};
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia + sa),
+                              forward_iterator<const int*>(ic),
+                              forward_iterator<const int*>(ic + 1)) ==
+                              cpp17_input_iterator<const int*>(ia+sa));
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia + sa),
+                              forward_iterator<const int*>(ic),
+                              forward_iterator<const int*>(ic)) ==
+                              cpp17_input_iterator<const int*>(ia+sa));
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia),
+                              forward_iterator<const int*>(ic),
+                              forward_iterator<const int*>(ic+1)) ==
+                              cpp17_input_iterator<const int*>(ia));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/find_first_of_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/find_first_of_pred.pass.cpp
new file mode 100644
index 0000000..0e9a6e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/find_first_of_pred.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, ForwardIterator Iter2,
+//          Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr Iter1  // constexpr after C++17
+//   find_first_of(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+    int ia[] = {1, 2, 3};
+    int ib[] = {7, 8, 9};
+    int ic[] = {0, 1, 2, 3, 4, 5, 0, 1, 2, 3};
+    typedef forward_iterator<int*>       FI;
+    typedef bidirectional_iterator<int*> BI;
+    typedef random_access_iterator<int*> RI;
+    std::equal_to<int> eq{};
+    return    (std::find_first_of(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ia)), FI(std::end(ia)), eq) == FI(ic+1))
+           && (std::find_first_of(FI(std::begin(ic)), FI(std::end(ic)), FI(std::begin(ib)), FI(std::end(ib)), eq) == FI(std::end(ic)))
+           && (std::find_first_of(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ia)), BI(std::end(ia)), eq) == BI(ic+1))
+           && (std::find_first_of(BI(std::begin(ic)), BI(std::end(ic)), BI(std::begin(ib)), BI(std::end(ib)), eq) == BI(std::end(ic)))
+           && (std::find_first_of(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ia)), RI(std::end(ia)), eq) == RI(ic+1))
+           && (std::find_first_of(RI(std::begin(ic)), RI(std::end(ic)), RI(std::begin(ib)), RI(std::end(ib)), eq) == RI(std::end(ic)))
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {1, 3, 5, 7};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia + sa),
+                              forward_iterator<const int*>(ib),
+                              forward_iterator<const int*>(ib + sb),
+                              std::equal_to<int>()) ==
+                              cpp17_input_iterator<const int*>(ia+1));
+    int ic[] = {7};
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia + sa),
+                              forward_iterator<const int*>(ic),
+                              forward_iterator<const int*>(ic + 1),
+                              std::equal_to<int>()) ==
+                              cpp17_input_iterator<const int*>(ia+sa));
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia + sa),
+                              forward_iterator<const int*>(ic),
+                              forward_iterator<const int*>(ic),
+                              std::equal_to<int>()) ==
+                              cpp17_input_iterator<const int*>(ia+sa));
+    assert(std::find_first_of(cpp17_input_iterator<const int*>(ia),
+                              cpp17_input_iterator<const int*>(ia),
+                              forward_iterator<const int*>(ic),
+                              forward_iterator<const int*>(ic+1),
+                              std::equal_to<int>()) ==
+                              cpp17_input_iterator<const int*>(ia));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/ranges.find_first_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/ranges.find_first_of.pass.cpp
new file mode 100644
index 0000000..5673c70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find.first.of/ranges.find_first_of.pass.cpp
@@ -0,0 +1,250 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, forward_iterator I2, sentinel_for<I2> S2,
+//          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
+//   constexpr I1 ranges::find_first_of(I1 first1, S1 last1, I2 first2, S2 last2,
+//                                      Pred pred = {},
+//                                      Proj1 proj1 = {}, Proj2 proj2 = {});
+// template<input_range R1, forward_range R2,
+//          class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
+//   constexpr borrowed_iterator_t<R1>
+//     ranges::find_first_of(R1&& r1, R2&& r2,
+//                           Pred pred = {},
+//                           Proj1 proj1 = {}, Proj2 proj2 = {});
+
+#include <algorithm>
+#include <array>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2 = int*, class Sent1 = Iter1, class Sent2 = Iter2>
+concept HasFindFirstOfIt = requires(Iter1 iter1, Sent1 sent1, Iter2 iter2, Sent2 sent2) {
+                             std::ranges::find_first_of(iter1, sent1, iter2, sent2);
+                           };
+
+static_assert(HasFindFirstOfIt<int*>);
+static_assert(!HasFindFirstOfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasFindFirstOfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasFindFirstOfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasFindFirstOfIt<int*, ForwardIteratorNotDerivedFrom>);
+static_assert(!HasFindFirstOfIt<int*, ForwardIteratorNotIncrementable>);
+static_assert(!HasFindFirstOfIt<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasFindFirstOfIt<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasFindFirstOfIt<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasFindFirstOfIt<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasFindFirstOfIt<int*, int**>); // not indirectly_comparable
+
+template <class Range1, class Range2 = UncheckedRange<int*>>
+concept HasFindFirstOfR = requires(Range1 range1, Range2 range2) {
+                             std::ranges::find_first_of(range1, range2);
+                           };
+
+static_assert(HasFindFirstOfR<UncheckedRange<int*>>);
+static_assert(!HasFindFirstOfR<InputRangeNotDerivedFrom>);
+static_assert(!HasFindFirstOfR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasFindFirstOfR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, ForwardRangeNotDerivedFrom>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, ForwardRangeNotIncrementable>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, InputRangeNotSentinelSemiregular>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, InputRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasFindFirstOfR<UncheckedRange<int*>, UncheckedRange<int**>>); // not indirectly_comparable
+
+template <int N1, int N2>
+struct Data {
+  std::array<int, N1> input1;
+  std::array<int, N2> input2;
+  ptrdiff_t expected;
+};
+
+template <class Iter1, class Sent1, class Iter2, class Sent2, int N1, int N2>
+constexpr void test(Data<N1, N2> d) {
+  {
+    std::same_as<Iter1> decltype(auto) ret =
+        std::ranges::find_first_of(Iter1(d.input1.data()), Sent1(Iter1(d.input1.data() + d.input1.size())),
+                                   Iter2(d.input2.data()), Sent2(Iter2(d.input2.data() + d.input2.size())));
+    assert(base(ret) == d.input1.data() + d.expected);
+  }
+  {
+    auto range1 = std::ranges::subrange(Iter1(d.input1.data()), Sent1(Iter1(d.input1.data() + d.input1.size())));
+    auto range2 = std::ranges::subrange(Iter2(d.input2.data()), Sent2(Iter2(d.input2.data() + d.input2.size())));
+    std::same_as<Iter1> decltype(auto) ret = std::ranges::find_first_of(range1, range2);
+    assert(base(ret) == d.input1.data() + d.expected);
+  }
+}
+
+template <class Iter1, class Sent1, class Iter2, class Sent2 = Iter2>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter1, Sent1, Iter2, Sent2, 4, 2>({.input1 = {1, 2, 3, 4}, .input2 = {2, 3}, .expected = 1});
+  // other elements from input2 are checked
+  test<Iter1, Sent1, Iter2, Sent2, 4, 2>({.input1 = {1, 2, 3, 4}, .input2 = {3, 2}, .expected = 1});
+  // an empty second range returns last
+  test<Iter1, Sent1, Iter2, Sent2, 4, 0>({.input1 = {1, 2, 3, 4}, .input2 = {}, .expected = 4});
+  // check that an empty first range works
+  test<Iter1, Sent1, Iter2, Sent2, 0, 1>({.input1 = {}, .input2 = {1}, .expected = 0});
+  // check both ranges empty works
+  test<Iter1, Sent1, Iter2, Sent2, 0, 0>({.input1 = {}, .input2 = {}, .expected = 0});
+  // the first element is checked properly
+  test<Iter1, Sent1, Iter2, Sent2, 5, 2>({.input1 = {5, 4, 3, 2, 1}, .input2 = {1, 5}, .expected = 0});
+  // the last element is checked properly
+  test<Iter1, Sent1, Iter2, Sent2, 5, 2>({.input1 = {5, 4, 3, 2, 1}, .input2 = {1, 6}, .expected = 4});
+  // no match, one-past-the-end iterator should be returned
+  test<Iter1, Sent1, Iter2, Sent2, 4, 4>({.input1 = {1, 3, 5, 7}, .input2 = {0, 2, 4, 6}, .expected = 4});
+  // input2 contains a single element
+  test<Iter1, Sent1, Iter2, Sent2, 4, 1>({.input1 = {1, 3, 5, 7}, .input2 = {1}, .expected = 0});
+}
+
+template <class Iter1, class Sent1 = Iter1>
+constexpr void test_iterators1() {
+  test_iterators<Iter1, Sent1, forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, forward_iterator<int*>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>>();
+  test_iterators<Iter1, Sent1, int*>();
+}
+
+constexpr bool test() {
+  test_iterators1<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators1<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators1<forward_iterator<int*>>();
+  test_iterators1<bidirectional_iterator<int*>>();
+  test_iterators1<random_access_iterator<int*>>();
+  test_iterators1<contiguous_iterator<int*>>();
+  test_iterators1<int*>();
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::find_first_of(std::array {1}, std::array {1});
+  }
+
+  { // check that the predicate is used
+    int a[] = {1, 2, 3, 4};
+    int b[] = {2};
+    {
+      auto ret = std::ranges::find_first_of(std::begin(a), std::end(a),
+                                            std::begin(b), std::end(b),
+                                            std::ranges::greater{});
+      assert(ret == a + 2);
+    }
+    {
+      auto ret = std::ranges::find_first_of(a, b, std::ranges::greater{});
+      assert(ret == a + 2);
+    }
+  }
+
+  { // check that the projections are used
+    int a[] = {1, 2, 3, 4};
+    int b[] = {4};
+    {
+      auto ret = std::ranges::find_first_of(std::begin(a), std::end(a),
+                                            std::begin(b), std::end(b), {},
+                                            [](int i) { return i / 2; },
+                                            [](int i) { return i - 3; });
+      assert(ret == a + 1);
+    }
+    {
+      auto ret = std::ranges::find_first_of(a, b, {}, [](int i) { return i / 2; }, [](int i) { return i - 3; });
+      assert(ret == a + 1);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S1 {
+      constexpr S1(int i_) : i(i_) {}
+      constexpr bool compare(int j) const { return j == i; }
+      constexpr const S1& identity() const { return *this; }
+      int i;
+    };
+    struct S2 {
+      constexpr S2(int i_) : i(i_) {}
+      int i;
+    };
+
+    {
+      S1 a[] = {1, 2, 3, 4};
+      S2 b[] = {2, 3};
+      auto ret = std::ranges::find_first_of(std::begin(a), std::end(a),
+                                            std::begin(b), std::end(b), &S1::compare, &S1::identity, &S2::i);
+      assert(ret == a + 1);
+    }
+    {
+      S1 a[] = {1, 2, 3, 4};
+      S2 b[] = {2, 3};
+      auto ret = std::ranges::find_first_of(a, b, &S1::compare, &S1::identity, &S2::i);
+      assert(ret == a + 1);
+    }
+  }
+
+  { // check that the implicit conversion to bool works
+    StrictComparable<int> a[] = {1, 2, 3, 4};
+    StrictComparable<int> b[] = {2, 3};
+    {
+      auto ret = std::ranges::find_first_of(a, std::end(a), b, std::end(b));
+      assert(ret == a + 1);
+    }
+    {
+      auto ret = std::ranges::find_first_of(a, b);
+      assert(ret == a + 1);
+    }
+  }
+
+  { // check that the complexity requirements are met
+    int a[] = {1, 2, 3, 4};
+    int b[] = {2, 3};
+    {
+      int predCount = 0;
+      auto predCounter = [&](int, int) { ++predCount; return false; };
+      int proj1Count = 0;
+      auto proj1Counter = [&](int i) { ++proj1Count; return i; };
+      int proj2Count = 0;
+      auto proj2Counter = [&](int i) { ++proj2Count; return i; };
+      auto ret = std::ranges::find_first_of(std::begin(a), std::end(a),
+                                            std::begin(b), std::end(b), predCounter, proj1Counter, proj2Counter);
+      assert(ret == a + 4);
+      assert(predCount <= 8);
+      assert(proj1Count <= 8);
+      assert(proj2Count <= 8);
+    }
+    {
+      int predCount = 0;
+      auto predCounter = [&](int, int) { ++predCount; return false; };
+      int proj1Count = 0;
+      auto proj1Counter = [&](int i) { ++proj1Count; return i; };
+      int proj2Count = 0;
+      auto proj2Counter = [&](int i) { ++proj2Count; return i; };
+      auto ret = std::ranges::find_first_of(a, b, predCounter, proj1Counter, proj2Counter);
+      assert(ret == a + 4);
+      assert(predCount == 8);
+      assert(proj1Count == 8);
+      assert(proj2Count == 8);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find.pass.cpp
new file mode 100644
index 0000000..c4de565
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, class T>
+//   requires HasEqualTo<Iter::value_type, T>
+//   constexpr Iter   // constexpr after C++17
+//   find(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 4, 6};
+    int ib[] = {1, 2, 3, 4, 5, 6};
+    return    (std::find(std::begin(ia), std::end(ia), 5) == ia+2)
+           && (std::find(std::begin(ib), std::end(ib), 9) == ib+6)
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned s = sizeof(ia)/sizeof(ia[0]);
+    cpp17_input_iterator<const int*> r = std::find(cpp17_input_iterator<const int*>(ia),
+                                             cpp17_input_iterator<const int*>(ia+s), 3);
+    assert(*r == 3);
+    r = std::find(cpp17_input_iterator<const int*>(ia), cpp17_input_iterator<const int*>(ia+s), 10);
+    assert(r == cpp17_input_iterator<const int*>(ia+s));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if.pass.cpp
new file mode 100644
index 0000000..a294b5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr Iter   // constexpr after C++17
+//   find_if(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct eq {
+    TEST_CONSTEXPR eq (int val) : v(val) {}
+    TEST_CONSTEXPR bool operator () (int v2) const { return v == v2; }
+    int v;
+    };
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 4, 6};
+    int ib[] = {1, 2, 3, 7, 5, 6};
+    eq c(4);
+    return    (std::find_if(std::begin(ia), std::end(ia), c) == ia+4)
+           && (std::find_if(std::begin(ib), std::end(ib), c) == ib+6)
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned s = sizeof(ia)/sizeof(ia[0]);
+    cpp17_input_iterator<const int*> r = std::find_if(cpp17_input_iterator<const int*>(ia),
+                                                cpp17_input_iterator<const int*>(ia+s),
+                                                eq(3));
+    assert(*r == 3);
+    r = std::find_if(cpp17_input_iterator<const int*>(ia),
+                     cpp17_input_iterator<const int*>(ia+s),
+                     eq(10));
+    assert(r == cpp17_input_iterator<const int*>(ia+s));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if_not.pass.cpp
new file mode 100644
index 0000000..6f48da3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find_if_not.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, Predicate<auto, Iter::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr Iter   // constexpr after C++17
+//   find_if_not(Iter first, Iter last, Pred pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct ne {
+    TEST_CONSTEXPR ne (int val) : v(val) {}
+    TEST_CONSTEXPR bool operator () (int v2) const { return v != v2; }
+    int v;
+    };
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 5, 2, 4, 6};
+    int ib[] = {1, 2, 3, 7, 5, 6};
+    ne c(4);
+    return    (std::find_if_not(std::begin(ia), std::end(ia), c) == ia+4)
+           && (std::find_if_not(std::begin(ib), std::end(ib), c) == ib+6)
+           ;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned s = sizeof(ia)/sizeof(ia[0]);
+    cpp17_input_iterator<const int*> r = std::find_if_not(cpp17_input_iterator<const int*>(ia),
+                                                    cpp17_input_iterator<const int*>(ia+s),
+                                                    ne(3));
+    assert(*r == 3);
+    r = std::find_if_not(cpp17_input_iterator<const int*>(ia),
+                         cpp17_input_iterator<const int*>(ia+s),
+                         ne(10));
+    assert(r == cpp17_input_iterator<const int*>(ia+s));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find.pass.cpp
new file mode 100644
index 0000000..e950797
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find.pass.cpp
@@ -0,0 +1,272 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class T, class Proj = identity>
+//   requires indirect_binary_predicate<ranges::equal_to, projected<I, Proj>, const T*>
+//   constexpr I ranges::find(I first, S last, const T& value, Proj proj = {});
+// template<input_range R, class T, class Proj = identity>
+//   requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<R>, Proj>, const T*>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::find(R&& r, const T& value, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+struct NotEqualityComparable {};
+
+template <class It, class Sent = It>
+concept HasFindIt = requires(It it, Sent sent) { std::ranges::find(it, sent, *it); };
+static_assert(HasFindIt<int*>);
+static_assert(!HasFindIt<NotEqualityComparable*>);
+static_assert(!HasFindIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasFindIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasFindIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasFindIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasFindIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+static_assert(!HasFindIt<int*, int>);
+static_assert(!HasFindIt<int, int*>);
+
+template <class Range, class ValT>
+concept HasFindR = requires(Range r) { std::ranges::find(r, ValT{}); };
+static_assert(HasFindR<std::array<int, 1>, int>);
+static_assert(!HasFindR<int, int>);
+static_assert(!HasFindR<std::array<NotEqualityComparable, 1>, NotEqualityComparable>);
+static_assert(!HasFindR<InputRangeNotDerivedFrom, int>);
+static_assert(!HasFindR<InputRangeNotIndirectlyReadable, int>);
+static_assert(!HasFindR<InputRangeNotInputOrOutputIterator, int>);
+static_assert(!HasFindR<InputRangeNotSentinelSemiregular, int>);
+static_assert(!HasFindR<InputRangeNotSentinelEqualityComparableWith, int>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  {
+    int a[] = {1, 2, 3, 4};
+    std::same_as<It> auto ret = std::ranges::find(It(a), Sent(It(a + 4)), 4);
+    assert(base(ret) == a + 3);
+    assert(*ret == 4);
+  }
+  {
+    int a[] = {1, 2, 3, 4};
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+    std::same_as<It> auto ret = std::ranges::find(range, 4);
+    assert(base(ret) == a + 3);
+    assert(*ret == 4);
+  }
+}
+
+struct OneWayComparable {
+  bool isLeft;
+  friend constexpr bool operator==(OneWayComparable l, OneWayComparable) { return l.isLeft; }
+};
+
+struct NonConstComparableLValue {
+  friend constexpr bool operator==(const NonConstComparableLValue&, const NonConstComparableLValue&) { return false; }
+  friend constexpr bool operator==(NonConstComparableLValue&, NonConstComparableLValue&) { return false; }
+  friend constexpr bool operator==(const NonConstComparableLValue&, NonConstComparableLValue&) { return false; }
+  friend constexpr bool operator==(NonConstComparableLValue&, const NonConstComparableLValue&) { return true; }
+};
+
+struct NonConstComparableRValue {
+  friend constexpr bool operator==(const NonConstComparableRValue&, const NonConstComparableRValue&) { return false; }
+  friend constexpr bool operator==(const NonConstComparableRValue&&, const NonConstComparableRValue&&) { return false; }
+  friend constexpr bool operator==(NonConstComparableRValue&&, NonConstComparableRValue&&) { return false; }
+  friend constexpr bool operator==(NonConstComparableRValue&&, const NonConstComparableRValue&) { return true; }
+};
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<const int*>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  {
+    // check that projections are used properly and that they are called with the iterator directly
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find(a, a + 4, a + 3, [](int& i) { return &i; });
+      assert(ret == a + 3);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find(a, a + 3, [](int& i) { return &i; });
+      assert(ret == a + 3);
+    }
+  }
+
+  { // check that the first element is returned
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::find(a, 0, &S::comp);
+      assert(ret == a);
+      assert(ret->comp == 0);
+      assert(ret->other == 0);
+    }
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::find(a, a + 3, 0, &S::comp);
+      assert(ret == a);
+      assert(ret->comp == 0);
+      assert(ret->other == 0);
+    }
+  }
+
+  { // check that end + 1 iterator is returned with no match
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::find(a, a + 3, 0);
+      assert(ret == a + 3);
+    }
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::find(a, 0);
+      assert(ret == a + 3);
+    }
+  }
+
+  {
+    // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret =
+      std::ranges::find(std::array{1, 2}, 3);
+  }
+
+  {
+    // check that an iterator is returned with a borrowing range
+    int a[] = {1, 2, 3, 4};
+    std::same_as<int*> auto ret = std::ranges::find(std::views::all(a), 1);
+    assert(ret == a);
+    assert(*ret == 1);
+  }
+
+  {
+    // check that std::invoke is used
+    struct S { int i; };
+    S a[] = { S{1}, S{3}, S{2} };
+    std::same_as<S*> auto ret = std::ranges::find(a, 4, &S::i);
+    assert(ret == a + 3);
+  }
+
+  {
+    // count invocations of the projection
+    {
+      int a[] = {1, 2, 3, 4};
+      int projection_count = 0;
+      auto ret = std::ranges::find(a, a + 4, 2, [&](int i) { ++projection_count; return i; });
+      assert(ret == a + 1);
+      assert(*ret == 2);
+      assert(projection_count == 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int projection_count = 0;
+      auto ret = std::ranges::find(a, 2, [&](int i) { ++projection_count; return i; });
+      assert(ret == a + 1);
+      assert(*ret == 2);
+      assert(projection_count == 2);
+    }
+  }
+
+  {
+    // check comparison order
+    {
+      OneWayComparable a[] = { OneWayComparable{true} };
+      auto ret = std::ranges::find(a, a + 1, OneWayComparable{false});
+      assert(ret == a);
+    }
+    {
+      OneWayComparable a[] = { OneWayComparable{true} };
+      auto ret = std::ranges::find(a, OneWayComparable{false});
+      assert(ret == a);
+    }
+  }
+
+  {
+    // check that the return type of `iter::operator*` doesn't change
+    {
+      NonConstComparableLValue a[] = { NonConstComparableLValue{} };
+      auto ret = std::ranges::find(a, a + 1, NonConstComparableLValue{});
+      assert(ret == a);
+    }
+    {
+      using It = std::move_iterator<NonConstComparableRValue*>;
+      NonConstComparableRValue a[] = { NonConstComparableRValue{} };
+      auto ret = std::ranges::find(It(a), It(a + 1), NonConstComparableRValue{});
+      assert(ret.base() == a);
+    }
+    {
+      NonConstComparableLValue a[] = { NonConstComparableLValue{} };
+      auto ret = std::ranges::find(a, NonConstComparableLValue{});
+      assert(ret == a);
+    }
+    {
+      using It = std::move_iterator<NonConstComparableRValue*>;
+      NonConstComparableRValue a[] = { NonConstComparableRValue{} };
+      auto range = std::ranges::subrange(It(a), It(a + 1));
+      auto ret = std::ranges::find(range, NonConstComparableRValue{});
+      assert(ret.base() == a);
+    }
+  }
+
+  {
+    // check that an empty range works
+    {
+      std::array<int ,0> a = {};
+      auto ret = std::ranges::find(a.begin(), a.end(), 1);
+      assert(ret == a.begin());
+    }
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::find(a, 1);
+      assert(ret == a.begin());
+    }
+  }
+
+  {
+    // check that the implicit conversion to bool works
+    {
+      StrictComparable<int> a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find(a, a + 4, StrictComparable<int>{2});
+      assert(ret == a + 1);
+    }
+    {
+      StrictComparable<int> a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find(a, StrictComparable<int>{2});
+      assert(ret == a + 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find_if.pass.cpp
new file mode 100644
index 0000000..3f7ec62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find_if.pass.cpp
@@ -0,0 +1,249 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr I ranges::find_if(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::find_if(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+struct Predicate {
+  bool operator()(int);
+};
+
+template <class It, class Sent = It>
+concept HasFindIfIt = requires(It it, Sent sent) { std::ranges::find_if(it, sent, Predicate{}); };
+static_assert(HasFindIfIt<int*>);
+static_assert(!HasFindIfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasFindIfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasFindIfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasFindIfIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasFindIfIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+static_assert(!HasFindIfIt<int*, int>);
+static_assert(!HasFindIfIt<int, int*>);
+
+template <class Pred>
+concept HasFindIfPred = requires(int* it, Pred pred) {std::ranges::find_if(it, it, pred); };
+
+static_assert(!HasFindIfPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasFindIfPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class R>
+concept HasFindIfR = requires(R r) { std::ranges::find_if(r, Predicate{}); };
+static_assert(HasFindIfR<std::array<int, 0>>);
+static_assert(!HasFindIfR<int>);
+static_assert(!HasFindIfR<InputRangeNotDerivedFrom>);
+static_assert(!HasFindIfR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasFindIfR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasFindIfR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasFindIfR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  {
+    int a[] = {1, 2, 3, 4};
+    std::same_as<It> auto ret = std::ranges::find_if(It(a), Sent(It(a + 4)), [](int x) mutable { return x == 4; });
+    assert(base(ret) == a + 3);
+    assert(*ret == 4);
+  }
+  {
+    int a[] = {1, 2, 3, 4};
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+    std::same_as<It> auto ret = std::ranges::find_if(range, [](int x) mutable { return x == 4; });
+    assert(base(ret) == a + 3);
+    assert(*ret == 4);
+  }
+}
+
+struct NonConstComparable {
+  friend constexpr bool operator==(const NonConstComparable&, const NonConstComparable&) { return false; }
+  friend constexpr bool operator==(NonConstComparable&, NonConstComparable&) { return false; }
+  friend constexpr bool operator==(const NonConstComparable&, NonConstComparable&) { return false; }
+  friend constexpr bool operator==(NonConstComparable&, const NonConstComparable&) { return true; }
+};
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<const int*>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  {
+    // check that projections are used properly and that they are called with the iterator directly
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if(a, a + 4, [&](int* i) { return i == a + 3; }, [](int& i) { return &i; });
+      assert(ret == a + 3);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if(a, [&](int* i) { return i == a + 3; }, [](int& i) { return &i; });
+      assert(ret == a + 3);
+    }
+  }
+
+  {
+    // check that the first element is returned
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::find_if(a, [](int i){ return i == 0; }, &S::comp);
+      assert(ret == a);
+      assert(ret->comp == 0);
+      assert(ret->other == 0);
+    }
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::find_if(a, a + 3, [](int i) { return i == 0; }, &S::comp);
+      assert(ret == a);
+      assert(ret->comp == 0);
+      assert(ret->other == 0);
+    }
+  }
+
+  {
+    // check that end + 1 iterator is returned with no match
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::find_if(a, a + 3, [](int) { return false; });
+      assert(ret == a + 3);
+    }
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::find_if(a, [](int){ return false; });
+      assert(ret == a + 3);
+    }
+  }
+
+  {
+    // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret =
+      std::ranges::find_if(std::array{1, 2}, [](int){ return false; });
+  }
+
+  {
+    // check that an iterator is returned with a borrowing range
+    int a[] = {1, 2, 3, 4};
+    std::same_as<int*> auto ret = std::ranges::find_if(std::views::all(a), [](int){ return true; });
+    assert(ret == a);
+    assert(*ret == 1);
+  }
+
+  {
+    // check that std::invoke is used
+    struct S { int i; };
+    S a[] = { S{1}, S{3}, S{2} };
+    std::same_as<S*> auto ret = std::ranges::find_if(a, [](int) { return false; }, &S::i);
+    assert(ret == a + 3);
+  }
+
+  {
+    // count projection and predicate invocation count
+    {
+      int a[] = {1, 2, 3, 4};
+      int predicate_count = 0;
+      int projection_count = 0;
+      auto ret = std::ranges::find_if(a, a + 4,
+                                      [&](int i) { ++predicate_count; return i == 2; },
+                                      [&](int i) { ++projection_count; return i; });
+      assert(ret == a + 1);
+      assert(*ret == 2);
+      assert(predicate_count == 2);
+      assert(projection_count == 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int predicate_count = 0;
+      int projection_count = 0;
+      auto ret = std::ranges::find_if(a,
+                                      [&](int i) { ++predicate_count; return i == 2; },
+                                      [&](int i) { ++projection_count; return i; });
+      assert(ret == a + 1);
+      assert(*ret == 2);
+      assert(predicate_count == 2);
+      assert(projection_count == 2);
+    }
+  }
+
+  {
+    // check that the return type of `iter::operator*` doesn't change
+    {
+      NonConstComparable a[] = { NonConstComparable{} };
+      auto ret = std::ranges::find_if(a, a + 1, [](auto&& e) { return e == NonConstComparable{}; });
+      assert(ret == a);
+    }
+    {
+      NonConstComparable a[] = { NonConstComparable{} };
+      auto ret = std::ranges::find_if(a, [](auto&& e) { return e == NonConstComparable{}; });
+      assert(ret == a);
+    }
+  }
+
+  {
+    // check that an empty range works
+    {
+      std::array<int ,0> a = {};
+      auto ret = std::ranges::find_if(a.begin(), a.end(), [](int) { return true; });
+      assert(ret == a.begin());
+    }
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::find_if(a, [](int) { return true; });
+      assert(ret == a.begin());
+    }
+  }
+
+  {
+    // check that the implicit conversion to bool works
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if(a, a + 4, [](const int& i) { return BooleanTestable{i == 3}; });
+      assert(ret == a + 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if(a, [](const int& b) { return BooleanTestable{b == 3}; });
+      assert(ret == a + 2);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find_if_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find_if_not.pass.cpp
new file mode 100644
index 0000000..9586074
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.find/ranges.find_if_not.pass.cpp
@@ -0,0 +1,243 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr I ranges::find_if_not(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::find_if_not(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+struct Predicate {
+  bool operator()(int);
+};
+
+template <class It, class Sent = It>
+concept HasFindIfNotIt = requires(It it, Sent sent) { std::ranges::find_if_not(it, sent, Predicate{}); };
+static_assert(HasFindIfNotIt<int*>);
+static_assert(!HasFindIfNotIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasFindIfNotIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasFindIfNotIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasFindIfNotIt<cpp20_input_iterator<int*>, SentinelForNotSemiregular>);
+static_assert(!HasFindIfNotIt<cpp20_input_iterator<int*>, InputRangeNotSentinelEqualityComparableWith>);
+
+static_assert(!HasFindIfNotIt<int*, int>);
+static_assert(!HasFindIfNotIt<int, int*>);
+
+template <class Pred>
+concept HasFindIfNotPred = requires(int* it, Pred pred) {std::ranges::find_if_not(it, it, pred); };
+
+static_assert(!HasFindIfNotPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasFindIfNotPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class R>
+concept HasFindIfNotR = requires(R r) { std::ranges::find_if_not(r, Predicate{}); };
+static_assert(HasFindIfNotR<std::array<int, 0>>);
+static_assert(!HasFindIfNotR<int>);
+static_assert(!HasFindIfNotR<InputRangeNotDerivedFrom>);
+static_assert(!HasFindIfNotR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasFindIfNotR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasFindIfNotR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasFindIfNotR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  {
+    int a[] = {1, 2, 3, 4};
+    std::same_as<It> auto ret = std::ranges::find_if_not(It(a), Sent(It(a + 4)), [c = 0](int) mutable { return c++ <= 2; });
+    assert(base(ret) == a + 3);
+    assert(*ret == 4);
+  }
+  {
+    int a[] = {1, 2, 3, 4};
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+    std::same_as<It> auto ret = std::ranges::find_if_not(range, [c = 0](int) mutable { return c++ <= 2; });
+    assert(base(ret) == a + 3);
+    assert(*ret == 4);
+  }
+}
+
+struct NonConstComparableLValue {
+  friend constexpr bool operator==(const NonConstComparableLValue&, const NonConstComparableLValue&) { return false; }
+  friend constexpr bool operator==(NonConstComparableLValue&, NonConstComparableLValue&) { return false; }
+  friend constexpr bool operator==(const NonConstComparableLValue&, NonConstComparableLValue&) { return false; }
+  friend constexpr bool operator==(NonConstComparableLValue&, const NonConstComparableLValue&) { return true; }
+};
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<const int*>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  { // check that projections are used properly and that they are called with the iterator directly
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if_not(a, a + 4, [&](int* i) { return i != a + 3; }, [](int& i) { return &i; });
+      assert(ret == a + 3);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if_not(a, [&](int* i) { return i != a + 3; }, [](int& i) { return &i; });
+      assert(ret == a + 3);
+    }
+  }
+
+  {
+    // check that the first element is returned
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::find_if_not(a, [](int i){ return i != 0; }, &S::comp);
+      assert(ret == a);
+      assert(ret->comp == 0);
+      assert(ret->other == 0);
+    }
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::find_if_not(a, a + 3, [](int i) { return i != 0; }, &S::comp);
+      assert(ret == a);
+      assert(ret->comp == 0);
+      assert(ret->other == 0);
+    }
+  }
+
+  {
+    // check that end + 1 iterator is returned with no match
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::find_if(a, a + 3, [](int) { return false; });
+      assert(ret == a + 3);
+    }
+    {
+      int a[] = {1, 1, 1};
+      auto ret = std::ranges::find_if(a, [](int){ return false; });
+      assert(ret == a + 3);
+    }
+  }
+
+  { // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret =
+      std::ranges::find_if_not(std::array{1, 2}, [](int){ return true; });
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    int a[] = {1, 2, 3, 4};
+    std::same_as<int*> auto ret = std::ranges::find_if_not(std::views::all(a), [](int){ return false; });
+    assert(ret == a);
+    assert(*ret == 1);
+  }
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S a[] = { S{1}, S{3}, S{2} };
+    std::same_as<S*> auto ret = std::ranges::find_if_not(a, [](int) { return true; }, &S::i);
+    assert(ret == a + 3);
+  }
+
+  { // count projection and predicate invocation count
+    {
+      int a[] = {1, 2, 3, 4};
+      int predicate_count = 0;
+      int projection_count = 0;
+      auto ret = std::ranges::find_if_not(a, a + 4,
+                                      [&](int i) { ++predicate_count; return i != 2; },
+                                      [&](int i) { ++projection_count; return i; });
+      assert(ret == a + 1);
+      assert(*ret == 2);
+      assert(predicate_count == 2);
+      assert(projection_count == 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      int predicate_count = 0;
+      int projection_count = 0;
+      auto ret = std::ranges::find_if_not(a,
+                                      [&](int i) { ++predicate_count; return i != 2; },
+                                      [&](int i) { ++projection_count; return i; });
+      assert(ret == a + 1);
+      assert(*ret == 2);
+      assert(predicate_count == 2);
+      assert(projection_count == 2);
+    }
+  }
+
+  { // check that the return type of `iter::operator*` doesn't change
+    {
+      NonConstComparableLValue a[] = { NonConstComparableLValue{} };
+      auto ret = std::ranges::find_if_not(a, a + 1, [](auto&& e) { return e != NonConstComparableLValue{}; });
+      assert(ret == a);
+    }
+    {
+      NonConstComparableLValue a[] = { NonConstComparableLValue{} };
+      auto ret = std::ranges::find_if_not(a, [](auto&& e) { return e != NonConstComparableLValue{}; });
+      assert(ret == a);
+    }
+  }
+
+  {
+    // check that an empty range works
+    {
+      std::array<int ,0> a = {};
+      auto ret = std::ranges::find_if_not(a.begin(), a.end(), [](int) { return true; });
+      assert(ret == a.begin());
+    }
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::find_if_not(a, [](int) { return true; });
+      assert(ret == a.begin());
+    }
+  }
+
+  {
+    // check that the implicit conversion to bool works
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if_not(a, a + 4, [](const int& i) { return BooleanTestable{i != 3}; });
+      assert(ret == a + 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::find_if_not(a, [](const int& b) { return BooleanTestable{b != 3}; });
+      assert(ret == a + 2);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/for_each_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/for_each_n.pass.cpp
new file mode 100644
index 0000000..6eb5c24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/for_each_n.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator, class Size, class Function>
+//    constexpr InputIterator      // constexpr after C++17
+//    for_each_n(InputIterator first, Size n, Function f);
+
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int expected[] = {3, 5, 8, 9};
+    const size_t N = 4;
+
+    auto it = std::for_each_n(std::begin(ia), N, [](int &a) { a += 2; });
+    return it == (std::begin(ia) + N)
+        && std::equal(std::begin(ia), std::end(ia), std::begin(expected))
+        ;
+    }
+#endif
+
+struct for_each_test
+{
+    for_each_test(int c) : count(c) {}
+    int count;
+    void operator()(int& i) {++i; ++count;}
+};
+
+int main(int, char**)
+{
+    typedef cpp17_input_iterator<int*> Iter;
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned s = sizeof(ia)/sizeof(ia[0]);
+
+    {
+    auto f = for_each_test(0);
+    Iter it = std::for_each_n(Iter(ia), 0, std::ref(f));
+    assert(it == Iter(ia));
+    assert(f.count == 0);
+    }
+
+    {
+    auto f = for_each_test(0);
+    Iter it = std::for_each_n(Iter(ia), s, std::ref(f));
+
+    assert(it == Iter(ia+s));
+    assert(f.count == s);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ia[i] == static_cast<int>(i+1));
+    }
+
+    {
+    auto f = for_each_test(0);
+    Iter it = std::for_each_n(Iter(ia), 1, std::ref(f));
+
+    assert(it == Iter(ia+1));
+    assert(f.count == 1);
+    for (unsigned i = 0; i < 1; ++i)
+        assert(ia[i] == static_cast<int>(i+2));
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each.pass.cpp
new file mode 100644
index 0000000..52b9126
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirectly_unary_invocable<projected<I, Proj>> Fun>
+//   constexpr ranges::for_each_result<I, Fun>
+//     ranges::for_each(I first, S last, Fun f, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirectly_unary_invocable<projected<iterator_t<R>, Proj>> Fun>
+//   constexpr ranges::for_each_result<borrowed_iterator_t<R>, Fun>
+//     ranges::for_each(R&& r, Fun f, Proj proj = {});
+
+#include <algorithm>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct Callable {
+  void operator()(int);
+};
+
+template <class Iter, class Sent = Iter>
+concept HasForEachIt = requires (Iter iter, Sent sent) { std::ranges::for_each(iter, sent, Callable{}); };
+
+static_assert(HasForEachIt<int*>);
+static_assert(!HasForEachIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasForEachIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasForEachIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasForEachIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasForEachIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Func>
+concept HasForEachItFunc = requires(int* a, int* b, Func func) { std::ranges::for_each(a, b, func); };
+
+static_assert(HasForEachItFunc<Callable>);
+static_assert(!HasForEachItFunc<IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasForEachItFunc<IndirectUnaryPredicateNotCopyConstructible>);
+
+template <class Range>
+concept HasForEachR = requires (Range range) { std::ranges::for_each(range, Callable{}); };
+
+static_assert(HasForEachR<UncheckedRange<int*>>);
+static_assert(!HasForEachR<InputRangeNotDerivedFrom>);
+static_assert(!HasForEachR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasForEachR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasForEachR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasForEachR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class Func>
+concept HasForEachRFunc = requires(UncheckedRange<int*> a, Func func) { std::ranges::for_each(a, func); };
+
+static_assert(HasForEachRFunc<Callable>);
+static_assert(!HasForEachRFunc<IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasForEachRFunc<IndirectUnaryPredicateNotCopyConstructible>);
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterator() {
+  { // simple test
+    {
+      auto func = [i = 0](int& a) mutable { a += i++; };
+      int a[] = {1, 6, 3, 4};
+      std::same_as<std::ranges::for_each_result<Iter, decltype(func)>> decltype(auto) ret =
+          std::ranges::for_each(Iter(a), Sent(Iter(a + 4)), func);
+      assert(a[0] == 1);
+      assert(a[1] == 7);
+      assert(a[2] == 5);
+      assert(a[3] == 7);
+      assert(base(ret.in) == a + 4);
+      int i = 0;
+      ret.fun(i);
+      assert(i == 4);
+    }
+    {
+      auto func = [i = 0](int& a) mutable { a += i++; };
+      int a[] = {1, 6, 3, 4};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      std::same_as<std::ranges::for_each_result<Iter, decltype(func)>> decltype(auto) ret =
+          std::ranges::for_each(range, func);
+      assert(a[0] == 1);
+      assert(a[1] == 7);
+      assert(a[2] == 5);
+      assert(a[3] == 7);
+      assert(base(ret.in) == a + 4);
+      int i = 0;
+      ret.fun(i);
+      assert(i == 4);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      int a[] = {};
+      std::ranges::for_each(Iter(a), Sent(Iter(a)), [](auto&) { assert(false); });
+    }
+    {
+      int a[] = {};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a)));
+      std::ranges::for_each(range, [](auto&) { assert(false); });
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterator<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterator<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterator<forward_iterator<int*>>();
+  test_iterator<bidirectional_iterator<int*>>();
+  test_iterator<random_access_iterator<int*>>();
+  test_iterator<contiguous_iterator<int*>>();
+  test_iterator<int*>();
+
+  { // check that std::invoke is used
+    struct S {
+      int check;
+      int other;
+    };
+    {
+      S a[] = {{1, 2}, {3, 4}, {5, 6}};
+      std::ranges::for_each(a, a + 3, [](int& i) { i = 0; }, &S::check);
+      assert(a[0].check == 0);
+      assert(a[0].other == 2);
+      assert(a[1].check == 0);
+      assert(a[1].other == 4);
+      assert(a[2].check == 0);
+      assert(a[2].other == 6);
+    }
+    {
+      S a[] = {{1, 2}, {3, 4}, {5, 6}};
+      std::ranges::for_each(a, [](int& i) { i = 0; }, &S::check);
+      assert(a[0].check == 0);
+      assert(a[0].other == 2);
+      assert(a[1].check == 0);
+      assert(a[1].other == 4);
+      assert(a[2].check == 0);
+      assert(a[2].other == 6);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each_n.pass.cpp
new file mode 100644
index 0000000..9641411
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/ranges.for_each_n.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, class Proj = identity,
+//          indirectly_unary_invocable<projected<I, Proj>> Fun>
+//   constexpr ranges::for_each_n_result<I, Fun>
+//     ranges::for_each_n(I first, iter_difference_t<I> n, Fun f, Proj proj = {});
+
+#include <algorithm>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct Callable {
+  void operator()(int);
+};
+
+template <class Iter>
+concept HasForEachN = requires (Iter iter) { std::ranges::for_each_n(iter, 0, Callable{}); };
+
+static_assert(HasForEachN<int*>);
+static_assert(!HasForEachN<InputIteratorNotDerivedFrom>);
+static_assert(!HasForEachN<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasForEachN<InputIteratorNotInputOrOutputIterator>);
+
+template <class Func>
+concept HasForEachItFunc = requires(int* a, int b, Func func) { std::ranges::for_each_n(a, b, func); };
+
+static_assert(HasForEachItFunc<Callable>);
+static_assert(!HasForEachItFunc<IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasForEachItFunc<IndirectUnaryPredicateNotCopyConstructible>);
+
+template <class Iter>
+constexpr void test_iterator() {
+  { // simple test
+    auto func = [i = 0](int& a) mutable { a += i++; };
+    int a[] = {1, 6, 3, 4};
+    std::same_as<std::ranges::for_each_result<Iter, decltype(func)>> auto ret =
+        std::ranges::for_each_n(Iter(a), 4, func);
+    assert(a[0] == 1);
+    assert(a[1] == 7);
+    assert(a[2] == 5);
+    assert(a[3] == 7);
+    assert(base(ret.in) == a + 4);
+    int i = 0;
+    ret.fun(i);
+    assert(i == 4);
+  }
+
+  { // check that an emptry range works
+    int a[] = {};
+    std::ranges::for_each_n(Iter(a), 0, [](auto&) { assert(false); });
+  }
+}
+
+constexpr bool test() {
+  test_iterator<cpp17_input_iterator<int*>>();
+  test_iterator<cpp20_input_iterator<int*>>();
+  test_iterator<forward_iterator<int*>>();
+  test_iterator<bidirectional_iterator<int*>>();
+  test_iterator<random_access_iterator<int*>>();
+  test_iterator<contiguous_iterator<int*>>();
+  test_iterator<int*>();
+
+  { // check that std::invoke is used
+    struct S {
+      int check;
+      int other;
+    };
+
+    S a[] = {{1, 2}, {3, 4}, {5, 6}};
+    std::ranges::for_each_n(a, 3, [](int& i) { i = 0; }, &S::check);
+    assert(a[0].check == 0);
+    assert(a[0].other == 2);
+    assert(a[1].check == 0);
+    assert(a[1].other == 4);
+    assert(a[2].check == 0);
+    assert(a[2].other == 6);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/test.pass.cpp
new file mode 100644
index 0000000..d6b4655
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.foreach/test.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter, Callable<auto, Iter::reference> Function>
+//   requires CopyConstructible<Function>
+//   constexpr Function   // constexpr after C++17
+//   for_each(Iter first, Iter last, Function f);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int expected[] = {3, 5, 8, 9};
+
+    std::for_each(std::begin(ia), std::end(ia), [](int &a) { a += 2; });
+    return std::equal(std::begin(ia), std::end(ia), std::begin(expected))
+        ;
+    }
+#endif
+
+struct for_each_test
+{
+    for_each_test(int c) : count(c) {}
+    int count;
+    void operator()(int& i) {++i; ++count;}
+};
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned s = sizeof(ia)/sizeof(ia[0]);
+    for_each_test f = std::for_each(cpp17_input_iterator<int*>(ia),
+                                    cpp17_input_iterator<int*>(ia+s),
+                                    for_each_test(0));
+    assert(f.count == s);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ia[i] == static_cast<int>(i+1));
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation.pass.cpp
new file mode 100644
index 0000000..2a2c796
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation.pass.cpp
@@ -0,0 +1,623 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class ForwardIterator1, class ForwardIterator2>
+//   constexpr bool   // constexpr after C++17
+//   is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
+//                  ForwardIterator2 first2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_iterators.h"
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 0, 0};
+    int ib[] = {1, 1, 0};
+    int ic[] = {1, 0, 1};
+    int id[] = {1};
+    return !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib))
+        && !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib))
+        &&  std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic))
+        &&  std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic))
+        && !std::is_permutation(std::begin(ic), std::end(ic), std::begin(id), std::end(id))
+        ;
+    }
+#endif
+
+int main(int, char**)
+{
+    {
+        const int ia[] = {0};
+        const int ib[] = {0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + 0),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + 0),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + 0)) == true);
+#endif
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0};
+        const int ib[] = {1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+#endif
+    }
+
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 0, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 1, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 2, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 2, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 2, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {1, 0, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {1, 2, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {2, 1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {2, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib + 1),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2, 3, 0, 5, 6, 2, 4, 4};
+        const int ib[] = {4, 2, 3, 0, 1, 4, 0, 5, 6, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib + 1 ),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1)) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2, 3, 0, 5, 6, 2, 4, 4};
+        const int ib[] = {4, 2, 3, 0, 1, 4, 0, 5, 6, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib)) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa)) == false);
+#endif
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation_pred.pass.cpp
new file mode 100644
index 0000000..ea4270e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/is_permutation_pred.pass.cpp
@@ -0,0 +1,774 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class ForwardIterator1, class ForwardIterator2, class BinaryPredicate>
+//   constexpr bool   // constexpr after C++17
+//   is_permutation(ForwardIterator1 first1, ForwardIterator1 last1,
+//                  ForwardIterator2 first2, BinaryPredicate pred);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int comparison_count = 0;
+template <typename T>
+bool counting_equals ( const T &a, const T &b ) {
+    ++comparison_count;
+    return a == b;
+    }
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+    int ia[] = {0, 0, 0};
+    int ib[] = {1, 1, 0};
+    int ic[] = {1, 0, 1};
+    int id[] = {1};
+    std::equal_to<int> c{};
+    return !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib)              , c)
+        && !std::is_permutation(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib), c)
+        &&  std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic)              , c)
+        &&  std::is_permutation(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic), c)
+        && !std::is_permutation(std::begin(ic), std::end(ic), std::begin(id), std::end(id), c)
+        ;
+    }
+#endif
+
+
+struct S {
+  S(int i) : i_(i) {}
+  bool operator==(const S& other) = delete;
+  int i_;
+};
+
+struct eq {
+  bool operator()(const S& a, const S&b) { return a.i_ == b.i_; }
+};
+
+
+int main(int, char**)
+{
+    {
+        const int ia[] = {0};
+        const int ib[] = {0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + 0),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0};
+        const int ib[] = {1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 0};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {1, 1};
+        const int ib[] = {1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 0, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 1, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 1, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 2, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 2, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 0};
+        const int ib[] = {1, 2, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {1, 0, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {1, 2, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {2, 1, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2};
+        const int ib[] = {2, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 1};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 0, 1};
+        const int ib[] = {1, 0, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib + 1),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2, 3, 0, 5, 6, 2, 4, 4};
+        const int ib[] = {4, 2, 3, 0, 1, 4, 0, 5, 6, 2};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == true);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == true);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib + 1),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   std::equal_to<const int>()) == false);
+        comparison_count = 0;
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa - 1),
+                                   counting_equals<const int>) == false);
+        assert ( comparison_count > 0 );
+        comparison_count = 0;
+        assert(std::is_permutation(random_access_iterator<const int*>(ia),
+                                   random_access_iterator<const int*>(ia + sa),
+                                   random_access_iterator<const int*>(ib),
+                                   random_access_iterator<const int*>(ib + sa - 1),
+                                   counting_equals<const int>) == false);
+        assert ( comparison_count == 0 );
+#endif
+    }
+    {
+        const int ia[] = {0, 1, 2, 3, 0, 5, 6, 2, 4, 4};
+        const int ib[] = {4, 2, 3, 0, 1, 4, 0, 5, 6, 0};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   std::equal_to<const int>()) == false);
+#if TEST_STD_VER >= 14
+        assert(std::is_permutation(forward_iterator<const int*>(ia),
+                                   forward_iterator<const int*>(ia + sa),
+                                   forward_iterator<const int*>(ib),
+                                   forward_iterator<const int*>(ib + sa),
+                                   std::equal_to<const int>()) == false);
+#endif
+    }
+    {
+      const S a[] = {S(0), S(1)};
+      const S b[] = {S(1), S(0)};
+      const unsigned sa = sizeof(a)/sizeof(a[0]);
+      assert(std::is_permutation(forward_iterator<const S*>(a),
+                                 forward_iterator<const S*>(a + sa),
+                                 forward_iterator<const S*>(b),
+                                 eq()));
+#if TEST_STD_VER >= 14
+      assert(std::is_permutation(forward_iterator<const S*>(a),
+                                 forward_iterator<const S*>(a + sa),
+                                 forward_iterator<const S*>(b),
+                                 forward_iterator<const S*>(b + sa),
+                                 eq()));
+#endif
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/ranges.is_permutation.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/ranges.is_permutation.pass.cpp
new file mode 100644
index 0000000..2d560b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.is_permutation/ranges.is_permutation.pass.cpp
@@ -0,0 +1,280 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<forward_iterator I1, sentinel_for<I1> S1, forward_iterator I2,
+//        sentinel_for<I2> S2, class Proj1 = identity, class Proj2 = identity,
+//        indirect_equivalence_relation<projected<I1, Proj1>,
+//                                      projected<I2, Proj2>> Pred = ranges::equal_to>
+// constexpr bool ranges::is_permutation(I1 first1, S1 last1, I2 first2, S2 last2,
+//                                       Pred pred = {},
+//                                       Proj1 proj1 = {}, Proj2 proj2 = {});                       // Since C++20
+//
+// template<forward_range R1, forward_range R2,
+//        class Proj1 = identity, class Proj2 = identity,
+//        indirect_equivalence_relation<projected<iterator_t<R1>, Proj1>,
+//                                      projected<iterator_t<R2>, Proj2>> Pred = ranges::equal_to>
+// constexpr bool ranges::is_permutation(R1&& r1, R2&& r2, Pred pred = {},
+//                                       Proj1 proj1 = {}, Proj2 proj2 = {});                       // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <list>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Sent1 = int*, class Iter2 = int*, class Sent2 = int*>
+concept HasIsPermutationIt = requires(Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2) {
+  std::ranges::is_permutation(first1, last1, first2, last2);
+};
+
+template <class Range1, class Range2 = UncheckedRange<int*>>
+concept HasIsPermutationR = requires(Range1 range1, Range2 range2) {
+  std::ranges::is_permutation(range1, range2);
+};
+
+static_assert(HasIsPermutationIt<int*>);
+static_assert(!HasIsPermutationIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasIsPermutationIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasIsPermutationIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasIsPermutationIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasIsPermutationIt<int*, int*, ForwardIteratorNotDerivedFrom>);
+static_assert(!HasIsPermutationIt<int*, int*, ForwardIteratorNotIncrementable>);
+static_assert(!HasIsPermutationIt<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasIsPermutationIt<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+// !indirect_equivalence_relation<Pred, projected<I1, Proj1>, projected<I2, Proj2>>;
+static_assert(!HasIsPermutationIt<int*, int*, int**, int**>);
+
+static_assert(HasIsPermutationR<UncheckedRange<int*>>);
+static_assert(!HasIsPermutationR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasIsPermutationR<ForwardRangeNotIncrementable>);
+static_assert(!HasIsPermutationR<int*, ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasIsPermutationR<int*, ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasIsPermutationR<UncheckedRange<int*>, ForwardRangeNotDerivedFrom>);
+static_assert(!HasIsPermutationR<UncheckedRange<int*>, ForwardRangeNotIncrementable>);
+static_assert(!HasIsPermutationR<UncheckedRange<int*>, ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasIsPermutationR<UncheckedRange<int*>, ForwardRangeNotSentinelEqualityComparableWith>);
+// !indirect_equivalence_relation<Pred, projected<iterator_t<I1>, Proj1>, projected<iterator_t<I2>, Proj2>>;
+static_assert(!HasIsPermutationIt<UncheckedRange<int*>, UncheckedRange<int**>>);
+
+template <int N, int M>
+struct Data {
+  std::array<int, N> input1;
+  std::array<int, M> input2;
+  bool expected;
+};
+
+template <class Iter1, class Sent1, class Iter2, class Sent2, int N, int M>
+constexpr void test(Data<N, M> d) {
+  {
+    std::same_as<bool> decltype(auto) ret = std::ranges::is_permutation(Iter1(d.input1.data()),
+                                                                        Sent1(Iter1(d.input1.data() + N)),
+                                                                        Iter1(d.input2.data()),
+                                                                        Sent1(Iter1(d.input2.data() + M)));
+    assert(ret == d.expected);
+  }
+  {
+    auto range1 = std::ranges::subrange(Iter1(d.input1.data()), Sent1(Iter1(d.input1.data() + N)));
+    auto range2 = std::ranges::subrange(Iter1(d.input2.data()), Sent1(Iter1(d.input2.data() + M)));
+    std::same_as<bool> decltype(auto) ret = std::ranges::is_permutation(range1, range2);
+    assert(ret == d.expected);
+  }
+}
+
+template <class Iter1, class Sent1, class Iter2, class Sent2 = Iter2>
+constexpr void test_iterators() {
+  // Ranges are identical.
+  test<Iter1, Sent1, Iter2, Sent2, 4, 4>({.input1 = {1, 2, 3, 4}, .input2 = {1, 2, 3, 4}, .expected = true});
+
+  // Ranges are reversed.
+  test<Iter1, Sent1, Iter2, Sent2, 4, 4>({.input1 = {1, 2, 3, 4}, .input2 = {4, 3, 2, 1}, .expected = true});
+
+  // Two elements are swapped.
+  test<Iter1, Sent1, Iter2, Sent2, 4, 4>({.input1 = {4, 2, 3, 1}, .input2 = {1, 2, 3, 4}, .expected = true});
+
+  // The first range is shorter.
+  test<Iter1, Sent1, Iter2, Sent2, 4, 5>({.input1 = {4, 2, 3, 1}, .input2 = {4, 3, 2, 1, 5}, .expected = false});
+
+  // The first range is longer.
+  test<Iter1, Sent1, Iter2, Sent2, 5, 4>({.input1 = {4, 2, 3, 1, 5}, .input2 = {4, 3, 2, 1}, .expected = false});
+
+  // The first range is empty.
+  test<Iter1, Sent1, Iter2, Sent2, 0, 4>({.input1 = {}, .input2 = {4, 3, 2, 1}, .expected = false});
+
+  // The second range is empty.
+  test<Iter1, Sent1, Iter2, Sent2, 5, 0>({.input1 = {4, 2, 3, 1, 5}, .input2 = {}, .expected = false});
+
+  // Both ranges are empty.
+  test<Iter1, Sent1, Iter2, Sent2, 0, 0>({.input1 = {}, .input2 = {}, .expected = true});
+
+  // 1-element range, same value.
+  test<Iter1, Sent1, Iter2, Sent2, 1, 1>({.input1 = {1}, .input2 = {1}, .expected = true});
+
+  // 1-element range, different values.
+  test<Iter1, Sent1, Iter2, Sent2, 1, 1>({.input1 = {1}, .input2 = {2}, .expected = false});
+}
+
+template <class Iter1, class Sent1 = Iter1>
+constexpr void test_iterators1() {
+  test_iterators<Iter1, Sent1, forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, forward_iterator<int*>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>>();
+  test_iterators<Iter1, Sent1, int*>();
+  test_iterators<Iter1, Sent1, const int*>();
+}
+
+constexpr bool test() {
+  test_iterators1<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators1<forward_iterator<int*>>();
+  test_iterators1<bidirectional_iterator<int*>>();
+  test_iterators1<random_access_iterator<int*>>();
+  test_iterators1<contiguous_iterator<int*>>();
+  test_iterators1<int*>();
+  test_iterators1<const int*>();
+
+  { // A custom comparator works.
+    struct A {
+      int a;
+      constexpr bool pred(const A& rhs) const { return a == rhs.a; }
+    };
+
+    std::array in1 = {A{2}, A{3}, A{1}};
+    std::array in2 = {A{1}, A{2}, A{3}};
+
+    {
+      auto ret = std::ranges::is_permutation(in1.begin(), in1.end(), in2.begin(), in2.end(), &A::pred);
+      assert(ret);
+    }
+
+    {
+      auto ret = std::ranges::is_permutation(in1, in2, &A::pred);
+      assert(ret);
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+
+      constexpr bool operator==(const A&) const = default;
+
+      constexpr A x2() const { return A{a * 2}; }
+      constexpr A div2() const { return A{a / 2}; }
+    };
+
+    std::array in1 = {A{1}, A{2}, A{3}};  // [2, 4, 6] after applying `x2`.
+    std::array in2 = {A{4}, A{8}, A{12}}; // [2, 4, 6] after applying `div2`.
+
+    {
+      auto ret = std::ranges::is_permutation(
+          in1.begin(), in1.end(), in2.begin(), in2.end(), {}, &A::x2, &A::div2);
+      assert(ret);
+    }
+
+    {
+      auto ret = std::ranges::is_permutation(in1, in2, {}, &A::x2, &A::div2);
+      assert(ret);
+    }
+  }
+
+
+  { // Check that complexity requirements are met.
+    int predCount = 0;
+    int proj1Count = 0;
+    int proj2Count = 0;
+    auto reset_counters = [&] {
+      predCount = proj1Count = proj2Count = 0;
+    };
+
+    counting_predicate pred(std::ranges::equal_to{}, predCount);
+    counting_projection<> proj1(proj1Count);
+    counting_projection<> proj2(proj2Count);
+
+    {
+      // 1. No applications of the corresponding predicate if `ForwardIterator1` and `ForwardIterator2` meet the
+      //    requirements of random access iterators and `last1 - first1 != last2 - first2`.
+      int a[] = {1, 2, 3, 4, 5};
+      int b[] = {1, 2, 3, 4};
+      // Make sure that the iterators have different types.
+      auto b_begin = random_access_iterator<int*>(std::begin(b));
+      auto b_end = random_access_iterator<int*>(std::end(b));
+
+      {
+        auto ret = std::ranges::is_permutation(a, a + 5, b_begin, b_end, pred, proj1, proj2);
+        assert(!ret);
+
+        assert(predCount == 0);
+        assert(proj1Count == 0);
+        assert(proj2Count == 0);
+        reset_counters();
+      }
+
+      {
+        auto ret = std::ranges::is_permutation(a, std::ranges::subrange(b_begin, b_end), pred, proj1, proj2);
+        assert(!ret);
+
+        assert(predCount == 0);
+        assert(proj1Count == 0);
+        assert(proj2Count == 0);
+        reset_counters();
+      }
+    }
+
+    // 2. Otherwise, exactly last1 - first1 applications of the corresponding predicate if
+    // `equal(first1, last1, first2, last2, pred)` would return true.
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      int b[] = {1, 2, 3, 4, 5};
+      int expected = 5;
+
+      {
+        auto ret = std::ranges::is_permutation(a, a + 5, b, b + 5, pred, proj1, proj2);
+        assert(ret);
+
+        assert(predCount == expected);
+        assert(proj1Count == expected);
+        assert(proj2Count == expected);
+        reset_counters();
+      }
+
+      {
+        auto ret = std::ranges::is_permutation(a, b, pred, proj1, proj2);
+        assert(ret);
+
+        assert(predCount == expected);
+        assert(proj1Count == expected);
+        assert(proj2Count == expected);
+        reset_counters();
+      }
+    }
+
+    // Note: we currently don't have the setup to test big-O complexity, but copying the requirement for completeness'
+    // sake.
+    // 3. Otherwise, at worst `O(N^2)`, where `N` has the value `last1 - first1`.
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.none_of/none_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.none_of/none_of.pass.cpp
new file mode 100644
index 0000000..00c1b89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.none_of/none_of.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template <class InputIterator, class Predicate>
+//   bool
+//   none_of(InputIterator first, InputIterator last, Predicate pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct test1
+{
+    TEST_CONSTEXPR bool operator()(const int& i) const
+    {
+        return i % 2 == 0;
+    }
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int ib[] = {1, 3, 5, 7};
+    return !std::none_of(std::begin(ia), std::end(ia), test1())
+        &&  std::none_of(std::begin(ib), std::end(ib), test1())
+        ;
+    }
+#endif
+
+int main(int, char**)
+{
+    {
+        int ia[] = {2, 4, 6, 8};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::none_of(cpp17_input_iterator<const int*>(ia),
+                            cpp17_input_iterator<const int*>(ia + sa), test1()) == false);
+        assert(std::none_of(cpp17_input_iterator<const int*>(ia),
+                            cpp17_input_iterator<const int*>(ia), test1()) == true);
+    }
+    {
+        const int ia[] = {2, 4, 5, 8};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::none_of(cpp17_input_iterator<const int*>(ia),
+                            cpp17_input_iterator<const int*>(ia + sa), test1()) == false);
+        assert(std::none_of(cpp17_input_iterator<const int*>(ia),
+                            cpp17_input_iterator<const int*>(ia), test1()) == true);
+    }
+    {
+        const int ia[] = {1, 3, 5, 7};
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        assert(std::none_of(cpp17_input_iterator<const int*>(ia),
+                            cpp17_input_iterator<const int*>(ia + sa), test1()) == true);
+        assert(std::none_of(cpp17_input_iterator<const int*>(ia),
+                            cpp17_input_iterator<const int*>(ia), test1()) == true);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.none_of/ranges.none_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.none_of/ranges.none_of.pass.cpp
new file mode 100644
index 0000000..cae29c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.none_of/ranges.none_of.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr bool ranges::none_of(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr bool ranges::none_of(R&& r, Pred pred, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct UnaryFunctor {
+  bool operator()(auto&&);
+};
+
+template <class It, class Sent = sentinel_wrapper<It>>
+concept HasNoneOfIt = requires(It first, Sent last) { std::ranges::none_of(first, last, UnaryFunctor{}); };
+
+static_assert(HasNoneOfIt<int*>);
+static_assert(!HasNoneOfIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasNoneOfIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasNoneOfIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasNoneOfIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasNoneOfIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Func>
+concept HasNoneOfItFunc = requires(int* ptr) { std::ranges::none_of(ptr, ptr, Func{}); };
+
+static_assert(HasNoneOfItFunc<UnaryFunctor>);
+static_assert(!HasNoneOfItFunc<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasNoneOfItFunc<IndirectUnaryPredicateNotPredicate>);
+
+template <class Range>
+concept HasNoneOfR = requires(Range range) { std::ranges::none_of(range, UnaryFunctor{}); };
+
+static_assert(HasNoneOfR<std::array<int, 10>>);
+static_assert(!HasNoneOfR<InputRangeNotDerivedFrom>);
+static_assert(!HasNoneOfR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasNoneOfR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasNoneOfR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasNoneOfR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class Func>
+concept HasNoneOfRFunc = requires(std::array<int, 10> range) { std::ranges::none_of(range, Func{}); };
+
+static_assert(HasNoneOfRFunc<UnaryFunctor>);
+static_assert(!HasNoneOfRFunc<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasNoneOfRFunc<IndirectUnaryPredicateNotPredicate>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4};
+      std::same_as<bool> decltype(auto) ret = std::ranges::none_of(It(a), Sent(It(a + 4)), [](int) { return true; });
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+      std::same_as<bool> decltype(auto) ret = std::ranges::none_of(range, [](int) { return true; });
+      assert(!ret);
+    }
+  }
+
+  { // check that an empty range works
+    std::array<int, 0> a;
+    assert(std::ranges::none_of(It(a.data()), Sent(It(a.data())), [](int) { return false; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data())));
+    assert(std::ranges::none_of(range, [](int) { return false; }));
+  }
+
+  { // check that the complexity requirements are met
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int) { ++predicateCount; return false; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      std::array a = {9, 7, 5, 3};
+      assert(std::ranges::none_of(It(a.begin()), Sent(It(a.end())), pred, proj));
+      assert(predicateCount == 4);
+      assert(projectionCount == 4);
+    }
+    {
+      int predicateCount = 0;
+      int projectionCount = 0;
+      auto pred = [&](int) { ++predicateCount; return false; };
+      auto proj = [&](int i) { ++projectionCount; return i; };
+      std::array a = {9, 7, 5, 3};
+      auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+      assert(std::ranges::none_of(range, pred, proj));
+      assert(predicateCount == 4);
+      assert(projectionCount == 4);
+    }
+  }
+
+  { // check that true is returned if no element satisfies the condition
+    std::array a = {1, 2, 3, 4};
+    assert(std::ranges::none_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i > 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(std::ranges::none_of(range, [](int i) { return i > 5; }));
+  }
+
+  { // check that false is returned if all elements satisfy the condition
+    std::array a = {1, 2, 3, 4};
+    assert(!std::ranges::none_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i < 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(!std::ranges::none_of(range, [](int i) { return i < 5; }));
+  }
+
+  { // check that false is returned if ony one elements satisfies the condition
+    std::array a = {1, 2, 3, 4, 6};
+    assert(!std::ranges::none_of(It(a.data()), Sent(It(a.data() + a.size())), [](int i) { return i > 5; }));
+    auto range = std::ranges::subrange(It(a.data()), Sent(It(a.data() + a.size())));
+    assert(!std::ranges::none_of(range, [](int i) { return i > 5; }));
+  }
+}
+
+constexpr bool test() {
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+
+  { // check that std::invoke is used
+    struct S { int check; int other; };
+    S a[] = {{1, 2}, {1, 7}, {1, 3}};
+    assert(std::ranges::none_of(a, a + 3, [](int i) { return i != 1; }, &S::check));
+    assert(std::ranges::none_of(a, [](int i) { return i != 1; }, &S::check));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/ranges.search.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/ranges.search.pass.cpp
new file mode 100644
index 0000000..b357299
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/ranges.search.pass.cpp
@@ -0,0 +1,354 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I1, sentinel_for<I1> S1, forward_iterator I2,
+//          sentinel_for<I2> S2, class Pred = ranges::equal_to,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
+//   constexpr subrange<I1>
+//     ranges::search(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {},
+//                    Proj1 proj1 = {}, Proj2 proj2 = {});
+// template<forward_range R1, forward_range R2, class Pred = ranges::equal_to,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
+//   constexpr borrowed_subrange_t<R1>
+//     ranges::search(R1&& r1, R2&& r2, Pred pred = {},
+//                    Proj1 proj1 = {}, Proj2 proj2 = {});
+
+#include <algorithm>
+#include <array>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Sent1 = Iter1, class Iter2 = int*, class Sent2 = Iter2>
+concept HasSearchIt = requires (Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2) {
+  std::ranges::search(first1, last1, first2, last2);
+};
+
+static_assert(HasSearchIt<int*>);
+static_assert(!HasSearchIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasSearchIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasSearchIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasSearchIt<int*, int*, int**>); // not indirectly comparable
+static_assert(!HasSearchIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasSearchIt<int*, int*, ForwardIteratorNotDerivedFrom>);
+static_assert(!HasSearchIt<int*, int*, ForwardIteratorNotIncrementable>);
+static_assert(!HasSearchIt<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasSearchIt<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Range1, class Range2 = UncheckedRange<int*>>
+concept HasSearchR = requires (Range1 range1, Range2 range2) {
+  std::ranges::search(range1, range2);
+};
+
+static_assert(HasSearchR<UncheckedRange<int*>>);
+static_assert(!HasSearchR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasSearchR<ForwardIteratorNotIncrementable>);
+static_assert(!HasSearchR<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasSearchR<ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasSearchR<UncheckedRange<int*>, UncheckedRange<int**>>); // not indirectly comparable
+static_assert(!HasSearchR<UncheckedRange<int*>, ForwardRangeNotDerivedFrom>);
+static_assert(!HasSearchR<UncheckedRange<int*>, ForwardRangeNotIncrementable>);
+static_assert(!HasSearchR<UncheckedRange<int*>, ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasSearchR<UncheckedRange<int*>, ForwardRangeNotSentinelEqualityComparableWith>);
+
+template <class Iter1, class Sent1, class Iter2, class Sent2 = Iter2>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      int p[] = {3, 4};
+      std::same_as<std::ranges::subrange<Iter1, Iter1>> decltype(auto) ret =
+          std::ranges::search(Iter1(a), Sent1(Iter1(a + 6)), Iter2(p), Sent2(Iter2(p + 2)));
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      int p[] = {3, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 2)));
+      std::same_as<std::ranges::subrange<Iter1, Iter1>> decltype(auto) ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 4);
+    }
+  }
+
+  { // matching part begins at the front
+    {
+      int a[] = {7, 5, 3, 7, 3, 6};
+      int p[] = {7, 5, 3};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 6)), Iter2(p), Sent2(Iter2(p + 3)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {7, 5, 3, 7, 3, 6};
+      int p[] = {7, 5, 3};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // matching part ends at the back
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {4, 8};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 5)), Iter2(p), Sent2(Iter2(p + 2)));
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {4, 8};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 5)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 2)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // pattern does not match
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {1};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 5)), Iter2(p), Sent2(Iter2(p + 1)));
+      assert(base(ret.begin()) == a + 5);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      int p[] = {1};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 5)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 1)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a + 5);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // range and pattern are identical
+    {
+      int a[] = {6, 7, 8, 9};
+      int p[] = {6, 7, 8, 9};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 4)), Iter2(p), Sent2(Iter2(p + 4)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 4);
+    }
+    {
+      int a[] = {6, 7, 8, 9};
+      int p[] = {6, 7, 8, 9};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 4)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 4)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 4);
+    }
+  }
+
+  { // pattern is longer than range
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {6, 7, 8, 9};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 3)), Iter2(p), Sent2(Iter2(p + 4)));
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {6, 7, 8, 9};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 3)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 4)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // pattern has zero length
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 3)), Iter2(p), Sent2(Iter2(p)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+    {
+      int a[] = {6, 7, 8};
+      int p[] = {};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 3)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+  }
+
+  { // range has zero length
+    {
+      int a[] = {};
+      int p[] = {6, 7, 8};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a)), Iter2(p), Sent2(Iter2(p + 3)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+    {
+      int a[] = {};
+      int p[] = {6, 7, 8};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+  }
+
+  { // check that the first match is returned
+    {
+      int a[] = {6, 7, 8, 6, 7, 8, 6, 7, 8};
+      int p[] = {6, 7, 8};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 9)), Iter2(p), Sent2(Iter2(p + 3)));
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {6, 7, 8, 6, 7, 8, 6, 7, 8};
+      int p[] = {6, 7, 8};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 9)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::search(range1, range2);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // check that the predicate is used
+    {
+      int a[] = {1, 2, 8, 1, 5, 6};
+      int p[] = {7, 0, 4};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 6)),
+                                     Iter2(p), Sent2(Iter2(p + 3)),
+                                     [](int l, int r) { return l > r; });
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {1, 2, 8, 1, 5, 6};
+      int p[] = {7, 0, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::search(range1, range2, [](int l, int r) { return l > r; });
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // check that the projections are used
+    {
+      int a[] = {1, 3, 5, 1, 5, 6};
+      int p[] = {2, 3, 4};
+      auto ret = std::ranges::search(Iter1(a), Sent1(Iter1(a + 6)),
+                                     Iter2(p), Sent2(Iter2(p + 3)),
+                                     {},
+                                     [](int i) { return i + 3; },
+                                     [](int i) { return i * 2; });
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {1, 3, 5, 1, 5, 6};
+      int p[] = {2, 3, 4};
+      auto range1 = std::ranges::subrange(Iter1(a), Sent1(Iter1(a + 6)));
+      auto range2 = std::ranges::subrange(Iter2(p), Sent2(Iter2(p + 3)));
+      auto ret = std::ranges::search(range1,
+                                     range2,
+                                     {},
+                                     [](int i) { return i + 3; },
+                                     [](int i) { return i * 2; });
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+}
+
+template <class Iter1, class Sent1 = Iter1>
+constexpr void test_iterators2() {
+  test_iterators<Iter1, Sent1, forward_iterator<int*>>();
+  test_iterators<Iter1, Sent1, forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, int*>();
+}
+
+constexpr bool test() {
+  test_iterators2<forward_iterator<int*>>();
+  test_iterators2<forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_iterators2<bidirectional_iterator<int*>>();
+  test_iterators2<bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_iterators2<random_access_iterator<int*>>();
+  test_iterators2<random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_iterators2<contiguous_iterator<int*>>();
+  test_iterators2<contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_iterators2<int*>();
+
+  { // check that std::invoke is used
+    struct S {
+      int i;
+
+      constexpr S identity() {
+        return *this;
+      }
+
+      constexpr bool compare(const S& s) {
+        return i == s.i;
+      }
+    };
+    {
+      S a[] = {{1}, {2}, {3}, {4}};
+      S p[] = {{2}, {3}};
+      auto ret = std::ranges::search(a, a + 4, p, p + 2, &S::compare, &S::identity, &S::identity);
+      assert(ret.begin() == a + 1);
+      assert(ret.end() == a + 3);
+    }
+    {
+      S a[] = {{1}, {2}, {3}, {4}};
+      S p[] = {{2}, {3}};
+      auto ret = std::ranges::search(a, p, &S::compare, &S::identity, &S::identity);
+      assert(ret.begin() == a + 1);
+      assert(ret.end() == a + 3);
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::search(std::array {1, 2, 3, 4}, std::array {2, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/ranges.search_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/ranges.search_n.pass.cpp
new file mode 100644
index 0000000..feca3b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/ranges.search_n.pass.cpp
@@ -0,0 +1,297 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I, sentinel_for<I> S, class T,
+//          class Pred = ranges::equal_to, class Proj = identity>
+//   requires indirectly_comparable<I, const T*, Pred, Proj>
+//   constexpr subrange<I>
+//     ranges::search_n(I first, S last, iter_difference_t<I> count,
+//                      const T& value, Pred pred = {}, Proj proj = {});
+// template<forward_range R, class T, class Pred = ranges::equal_to,
+//          class Proj = identity>
+//   requires indirectly_comparable<iterator_t<R>, const T*, Pred, Proj>
+//   constexpr borrowed_subrange_t<R>
+//     ranges::search_n(R&& r, range_difference_t<R> count,
+//                      const T& value, Pred pred = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Sent1 = Iter1>
+concept HasSearchNIt = requires (Iter1 first1, Sent1 last1) {
+  std::ranges::search_n(first1, last1, 0, 0);
+};
+
+static_assert(HasSearchNIt<int*>);
+static_assert(!HasSearchNIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasSearchNIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasSearchNIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasSearchNIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasSearchNIt<int**, int**>); // not indirectly comparable
+
+template <class Range1, class Range2 = UncheckedRange<int*>>
+concept HasSearchNR = requires (Range1 range) {
+  std::ranges::search_n(range, 0, 0);
+};
+
+static_assert(HasSearchNR<UncheckedRange<int*>>);
+static_assert(!HasSearchNR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasSearchNR<ForwardIteratorNotIncrementable>);
+static_assert(!HasSearchNR<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasSearchNR<ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasSearchNR<UncheckedRange<int**>>); // not indirectly comparable
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      std::same_as<std::ranges::subrange<Iter, Iter>> decltype(auto) ret =
+          std::ranges::search_n(Iter(a), Sent(Iter(a + 6)), 1, 3);
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 6)));
+      std::same_as<std::ranges::subrange<Iter, Iter>> decltype(auto) ret = std::ranges::search_n(range, 1, 3);
+      assert(base(ret.begin()) == a + 2);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // matching part begins at the front
+    {
+      int a[] = {7, 7, 3, 7, 3, 6};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 6)), 2, 7);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 2);
+    }
+    {
+      int a[] = {7, 7, 3, 7, 3, 6};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 6)));
+      auto ret = std::ranges::search_n(range, 2, 7);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 2);
+    }
+  }
+
+  { // matching part ends at the back
+    {
+      int a[] = {9, 3, 6, 4, 4};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 5)), 2, 4);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {9, 3, 6, 4, 4};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      auto ret = std::ranges::search_n(range, 2, 4);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // pattern does not match
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 5)), 1, 1);
+      assert(base(ret.begin()) == a + 5);
+      assert(base(ret.end()) == a + 5);
+    }
+    {
+      int a[] = {9, 3, 6, 4, 8};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      auto ret = std::ranges::search_n(range, 1, 1);
+      assert(base(ret.begin()) == a + 5);
+      assert(base(ret.end()) == a + 5);
+    }
+  }
+
+  { // range and pattern are identical
+    {
+      int a[] = {1, 1, 1, 1};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 4)), 4, 1);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 4);
+    }
+    {
+      int a[] = {1, 1, 1, 1};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      auto ret = std::ranges::search_n(range, 4, 1);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 4);
+    }
+  }
+
+  { // pattern is longer than range
+    {
+      int a[] = {3, 3, 3};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 3)), 4, 3);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {3, 3, 3};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+      auto ret = std::ranges::search_n(range, 4, 3);
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // pattern has zero length
+    {
+      int a[] = {6, 7, 8};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 3)), 0, 7);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+    {
+      int a[] = {6, 7, 8};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+      auto ret = std::ranges::search_n(range, 0, 7);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+  }
+
+  { // range has zero length
+    {
+      int a[] = {};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a)), 1, 1);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+    {
+      int a[] = {};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a)));
+      auto ret = std::ranges::search_n(range, 1, 1);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a);
+    }
+  }
+
+  { // check that the first match is returned
+    {
+      int a[] = {6, 6, 8, 6, 6, 8, 6, 6, 8};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 9)), 2, 6);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 2);
+    }
+    {
+      int a[] = {6, 6, 8, 6, 6, 8, 6, 6, 8};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 9)));
+      auto ret = std::ranges::search_n(range, 2, 6);
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 2);
+    }
+  }
+
+  { // check that the predicate is used
+    {
+      int a[] = {1, 4, 4, 3, 6, 1};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 6)),
+                                       3,
+                                       4,
+                                       [](int l, int r) { return l == r || l == 1; });
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+    {
+      int a[] = {1, 4, 4, 3, 6, 1};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 6)));
+      auto ret = std::ranges::search_n(range, 3, 4, [](int l, int r) { return l == r || l == 1; });
+      assert(base(ret.begin()) == a);
+      assert(base(ret.end()) == a + 3);
+    }
+  }
+
+  { // check that the projections are used
+    {
+      int a[] = {1, 3, 1, 6, 5, 6};
+      auto ret = std::ranges::search_n(Iter(a), Sent(Iter(a + 6)),
+                                       3,
+                                       6,
+                                       {},
+                                       [](int i) { return i % 2 == 0 ? i : i + 1; });
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 6);
+    }
+    {
+      int a[] = {1, 3, 1, 6, 5, 6};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 6)));
+      auto ret = std::ranges::search_n(range,
+                                       3,
+                                       6,
+                                       {},
+                                       [](int i) { return i % 2 == 0 ? i : i + 1; });
+      assert(base(ret.begin()) == a + 3);
+      assert(base(ret.end()) == a + 6);
+    }
+  }
+}
+constexpr bool test() {
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_iterators<int*>();
+
+  { // check that std::invoke is used
+    struct S {
+      int i;
+
+      constexpr S identity() {
+        return *this;
+      }
+
+      constexpr bool compare(int o) {
+        return i == o;
+      }
+    };
+    {
+      S a[] = {{1}, {2}, {3}, {4}};
+      auto ret = std::ranges::search_n(a, a + 4, 1, 2, &S::compare, &S::identity);
+      assert(ret.begin() == a + 1);
+      assert(ret.end() == a + 2);
+    }
+    {
+      S a[] = {{1}, {2}, {3}, {4}};
+      auto ret = std::ranges::search_n(a, 1, 2, &S::compare, &S::identity);
+      assert(ret.begin() == a + 1);
+      assert(ret.end() == a + 2);
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::search_n(std::array {1, 2, 3, 4}, 1, 0);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search.pass.cpp
new file mode 100644
index 0000000..b4b841f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter1, ForwardIterator Iter2>
+//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
+//   constexpr Iter1     // constexpr after C++17
+//   search(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+//
+//   template<class ForwardIterator, class Searcher>
+//   ForwardIterator search(ForwardIterator first, ForwardIterator last,
+//                          const Searcher& searcher); // C++17
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct MySearcherC {
+    template <typename Iterator>
+    std::pair<Iterator, Iterator>
+    TEST_CONSTEXPR operator() (Iterator b, Iterator e) const
+    {
+        return std::make_pair(b, e);
+    }
+};
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 3};
+    int ib[] = {0, 1, 5, 3};
+    int ic[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    return    (std::search(std::begin(ic), std::end(ic), std::begin(ia), std::end(ia)) == ic+3)
+           && (std::search(std::begin(ic), std::end(ic), std::begin(ib), std::end(ib)) == std::end(ic))
+           && (std::search(std::begin(ic), std::end(ic), MySearcherC()) == std::begin(ic))
+           ;
+    }
+#endif
+
+int searcher_called = 0;
+
+struct MySearcher {
+    template <typename Iterator>
+    std::pair<Iterator, Iterator>
+    operator() (Iterator b, Iterator e) const
+    {
+        ++searcher_called;
+        return std::make_pair(b, e);
+    }
+};
+
+namespace User {
+struct S {
+    S(int x) : x_(x) {}
+    int x_;
+};
+bool operator==(S lhs, S rhs)
+{
+    return lhs.x_ == rhs.x_;
+}
+template <class T, class U>
+void make_pair(T&&, U&&) = delete;
+} // namespace User
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia)) == Iter1(ia));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+1)) == Iter1(ia));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+1), Iter2(ia+2)) == Iter1(ia+1));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+2)) == Iter1(ia));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3)) == Iter1(ia+2));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3)) == Iter1(ia+2));
+    assert(std::search(Iter1(ia), Iter1(ia), Iter2(ia+2), Iter2(ia+3)) == Iter1(ia));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-1), Iter2(ia+sa)) == Iter1(ia+sa-1));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-3), Iter2(ia+sa)) == Iter1(ia+sa-3));
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa)) == Iter1(ia));
+    assert(std::search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia), Iter2(ia+sa)) == Iter1(ia+sa-1));
+    assert(std::search(Iter1(ia), Iter1(ia+1), Iter2(ia), Iter2(ia+sa)) == Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1)) == Iter1(ib+1));
+    int id[] = {1, 2};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2)) == Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3)) == Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4)) == Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    assert(std::search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3)) == Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    assert(std::search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk)) == Iter1(ij+6));
+}
+
+template <class Iter>
+void
+adl_test()
+{
+    User::S ua[] = {1};
+    assert(std::search(Iter(ua), Iter(ua), Iter(ua), Iter(ua)) == Iter(ua));
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+    adl_test<forward_iterator<User::S*> >();
+    adl_test<random_access_iterator<User::S*> >();
+
+#if TEST_STD_VER > 14
+{
+    typedef int * RI;
+    static_assert((std::is_same<RI, decltype(std::search(RI(), RI(), MySearcher()))>::value), "" );
+
+    RI it(nullptr);
+    assert(it == std::search(it, it, MySearcher()));
+    assert(searcher_called == 1);
+}
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_n.pass.cpp
new file mode 100644
index 0000000..228bc6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_n.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class ForwardIterator, class Size, class T>
+//   constexpr ForwardIterator     // constexpr after C++17
+//   search_n(ForwardIterator first, ForwardIterator last, Size count,
+//            const T& value);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "user_defined_integral.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 0, 1, 1, 2, 2};
+    return    (std::search_n(std::begin(ia), std::end(ia), 1, 0) == ia)
+           && (std::search_n(std::begin(ia), std::end(ia), 2, 1) == ia+2)
+           && (std::search_n(std::begin(ia), std::end(ia), 1, 3) == std::end(ia))
+           ;
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 0, 0) == Iter(ia));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 1, 0) == Iter(ia+0));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 2, 0) == Iter(ia+sa));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), sa, 0) == Iter(ia+sa));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 0, 3) == Iter(ia));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 1, 3) == Iter(ia+3));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 2, 3) == Iter(ia+sa));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), sa, 3) == Iter(ia+sa));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 0, 5) == Iter(ia));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 1, 5) == Iter(ia+5));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 2, 5) == Iter(ia+sa));
+    assert(std::search_n(Iter(ia), Iter(ia+sa), sa, 5) == Iter(ia+sa));
+
+    int ib[] = {0, 0, 1, 1, 2, 2};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 0, 0) == Iter(ib));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 1, 0) == Iter(ib+0));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 2, 0) == Iter(ib+0));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 3, 0) == Iter(ib+sb));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), sb, 0) == Iter(ib+sb));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 0, 1) == Iter(ib));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 1, 1) == Iter(ib+2));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 2, 1) == Iter(ib+2));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 3, 1) == Iter(ib+sb));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), sb, 1) == Iter(ib+sb));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 0, 2) == Iter(ib));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 1, 2) == Iter(ib+4));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 2, 2) == Iter(ib+4));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 3, 2) == Iter(ib+sb));
+    assert(std::search_n(Iter(ib), Iter(ib+sb), sb, 2) == Iter(ib+sb));
+
+    int ic[] = {0, 0, 0};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 0, 0) == Iter(ic));
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 1, 0) == Iter(ic));
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 2, 0) == Iter(ic));
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 3, 0) == Iter(ic));
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 4, 0) == Iter(ic+sc));
+
+    // Check that we properly convert the size argument to an integral.
+    (void)std::search_n(Iter(ic), Iter(ic+sc), UserDefinedIntegral<unsigned>(0), 0);
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_n_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_n_pred.pass.cpp
new file mode 100644
index 0000000..3bf72e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_n_pred.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class ForwardIterator, class Size, class T, class BinaryPredicate>
+//   constexpr ForwardIterator     // constexpr after C++17
+//   search_n(ForwardIterator first, ForwardIterator last, Size count,
+//            const T& value, BinaryPredicate pred);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "user_defined_integral.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool eq(int a, int b) { return a == b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 0, 1, 1, 2, 2};
+    return    (std::search_n(std::begin(ia), std::end(ia), 1, 0, eq) == ia)
+           && (std::search_n(std::begin(ia), std::end(ia), 2, 1, eq) == ia+2)
+           && (std::search_n(std::begin(ia), std::end(ia), 1, 3, eq) == std::end(ia))
+           ;
+    }
+#endif
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y)
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+
+template <class Iter>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 0, 0, count_equal()) == Iter(ia));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 1, 0, count_equal()) == Iter(ia+0));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 2, 0, count_equal()) == Iter(ia+sa));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), sa, 0, count_equal()) == Iter(ia+sa));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 0, 3, count_equal()) == Iter(ia));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 1, 3, count_equal()) == Iter(ia+3));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 2, 3, count_equal()) == Iter(ia+sa));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), sa, 3, count_equal()) == Iter(ia+sa));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 0, 5, count_equal()) == Iter(ia));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 1, 5, count_equal()) == Iter(ia+5));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), 2, 5, count_equal()) == Iter(ia+sa));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ia), Iter(ia+sa), sa, 5, count_equal()) == Iter(ia+sa));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+
+    int ib[] = {0, 0, 1, 1, 2, 2};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 0, 0, count_equal()) == Iter(ib));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 1, 0, count_equal()) == Iter(ib+0));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 2, 0, count_equal()) == Iter(ib+0));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 3, 0, count_equal()) == Iter(ib+sb));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), sb, 0, count_equal()) == Iter(ib+sb));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 0, 1, count_equal()) == Iter(ib));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 1, 1, count_equal()) == Iter(ib+2));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 2, 1, count_equal()) == Iter(ib+2));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 3, 1, count_equal()) == Iter(ib+sb));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), sb, 1, count_equal()) == Iter(ib+sb));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 0, 2, count_equal()) == Iter(ib));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 1, 2, count_equal()) == Iter(ib+4));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 2, 2, count_equal()) == Iter(ib+4));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), 3, 2, count_equal()) == Iter(ib+sb));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ib), Iter(ib+sb), sb, 2, count_equal()) == Iter(ib+sb));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+
+    int ic[] = {0, 0, 0};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]);
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 0, 0, count_equal()) == Iter(ic));
+    assert(count_equal::count <= sc);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 1, 0, count_equal()) == Iter(ic));
+    assert(count_equal::count <= sc);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 2, 0, count_equal()) == Iter(ic));
+    assert(count_equal::count <= sc);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 3, 0, count_equal()) == Iter(ic));
+    assert(count_equal::count <= sc);
+    count_equal::count = 0;
+    assert(std::search_n(Iter(ic), Iter(ic+sc), 4, 0, count_equal()) == Iter(ic+sc));
+    assert(count_equal::count <= sc);
+    count_equal::count = 0;
+
+    // Check that we properly convert the size argument to an integral.
+    TEST_IGNORE_NODISCARD std::search_n(Iter(ic), Iter(ic+sc), UserDefinedIntegral<unsigned>(4), 0, count_equal());
+    count_equal::count = 0;
+}
+
+class A {
+public:
+  A(int x, int y) : x_(x), y_(y) {}
+  int x() const { return x_; }
+  int y() const { return y_; }
+
+private:
+  int x_;
+  int y_;
+};
+
+struct Pred {
+  bool operator()(const A& l, int r) const { return l.x() == r; }
+};
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+
+    // test bug reported in https://reviews.llvm.org/D124079?#3661721
+    {
+        A a[]       = {A(1, 2), A(2, 3), A(2, 4)};
+        int value   = 2;
+        auto result = std::search_n(a, a + 3, 1, value, Pred());
+        assert(result == a + 1);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_pred.pass.cpp
new file mode 100644
index 0000000..f835d2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/alg.search/search_pred.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter1, ForwardIterator Iter2>
+//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
+//   constexpr Iter1     // constexpr after C++17
+//   search(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool eq(int a, int b) { return a == b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 2, 3};
+    int ib[] = {0, 1, 5, 3};
+    int ic[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    return    (std::search(std::begin(ic), std::end(ic), std::begin(ia), std::end(ia), eq) == ic+3)
+           && (std::search(std::begin(ic), std::end(ic), std::begin(ib), std::end(ib), eq) == std::end(ic))
+           ;
+    }
+#endif
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y)
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= 0);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+1), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+1), Iter2(ia+2), count_equal()) == Iter1(ia+1));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+2), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= 0);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3), count_equal()) == Iter1(ia+2));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+2), Iter2(ia+3), count_equal()) == Iter1(ia+2));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia), Iter2(ia+2), Iter2(ia+3), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= 0);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-1), Iter2(ia+sa), count_equal()) == Iter1(ia+sa-1));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia+sa-3), Iter2(ia+sa), count_equal()) == Iter1(ia+sa-3));
+    assert(count_equal::count <= sa*3);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa), count_equal()) == Iter1(ia));
+    assert(count_equal::count <= sa*sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia), Iter2(ia+sa), count_equal()) == Iter1(ia+sa-1));
+    assert(count_equal::count <= (sa-1)*sa);
+    count_equal::count = 0;
+    assert(std::search(Iter1(ia), Iter1(ia+1), Iter2(ia), Iter2(ia+sa), count_equal()) == Iter1(ia+1));
+    assert(count_equal::count <= sa);
+    count_equal::count = 0;
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), count_equal()) == Iter1(ib+1));
+    assert(count_equal::count <= sb);
+    count_equal::count = 0;
+    int id[] = {1, 2};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), count_equal()) == Iter1(ib+1));
+    assert(count_equal::count <= sb*2);
+    count_equal::count = 0;
+    int ie[] = {1, 2, 3};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), count_equal()) == Iter1(ib+4));
+    assert(count_equal::count <= sb*3);
+    count_equal::count = 0;
+    int ig[] = {1, 2, 3, 4};
+    assert(std::search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), count_equal()) == Iter1(ib+8));
+    assert(count_equal::count <= sb*4);
+    count_equal::count = 0;
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    assert(std::search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), count_equal()) == Iter1(ih+3));
+    assert(count_equal::count <= sh*3);
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/mismatch.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/mismatch.pass.cpp
new file mode 100644
index 0000000..cc588c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/mismatch.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2>
+//   requires HasEqualTo<Iter1::value_type, Iter2::value_type>
+//   constexpr pair<Iter1, Iter2>   // constexpr after c++17
+//   mismatch(Iter1 first1, Iter1 last1, Iter2 first2);
+//
+// template<InputIterator Iter1, InputIterator Iter2Pred>
+//   constexpr pair<Iter1, Iter2>   // constexpr after c++17
+//   mismatch(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2); // C++14
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int ib[] = {1, 3};
+    int ic[] = {1, 3, 5, 7};
+    typedef cpp17_input_iterator<int*>         II;
+    typedef bidirectional_iterator<int*> BI;
+
+    auto p1 = std::mismatch(std::begin(ia), std::end(ia), std::begin(ic));
+    if (p1.first != ia+2 || p1.second != ic+2)
+        return false;
+
+    auto p2 = std::mismatch(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic));
+    if (p2.first != ia+2 || p2.second != ic+2)
+        return false;
+
+    auto p3 = std::mismatch(std::begin(ib), std::end(ib), std::begin(ic));
+    if (p3.first != ib+2 || p3.second != ic+2)
+        return false;
+
+    auto p4 = std::mismatch(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic));
+    if (p4.first != ib+2 || p4.second != ic+2)
+        return false;
+
+    auto p5 = std::mismatch(II(std::begin(ib)), II(std::end(ib)), II(std::begin(ic)));
+    if (p5.first != II(ib+2) || p5.second != II(ic+2))
+        return false;
+    auto p6 = std::mismatch(BI(std::begin(ib)), BI(std::end(ib)), BI(std::begin(ic)), BI(std::end(ic)));
+    if (p6.first != BI(ib+2) || p6.second != BI(ic+2))
+        return false;
+
+    return true;
+    }
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {0, 1, 2, 3, 0, 1, 2, 3};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]); ((void)sb); // unused in C++11
+
+    typedef cpp17_input_iterator<const int*> II;
+    typedef random_access_iterator<const int*>  RAI;
+
+    assert(std::mismatch(II(ia), II(ia + sa), II(ib))
+            == (std::pair<II, II>(II(ia+3), II(ib+3))));
+
+    assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib))
+            == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
+
+#if TEST_STD_VER > 11 // We have the four iteration version
+    assert(std::mismatch(II(ia), II(ia + sa), II(ib), II(ib+sb))
+            == (std::pair<II, II>(II(ia+3), II(ib+3))));
+
+    assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib), RAI(ib+sb))
+            == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
+
+
+    assert(std::mismatch(II(ia), II(ia + sa), II(ib), II(ib+2))
+            == (std::pair<II, II>(II(ia+2), II(ib+2))));
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/mismatch_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/mismatch_pred.pass.cpp
new file mode 100644
index 0000000..bda4ec7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/mismatch_pred.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2,
+//          Predicate<auto, Iter1::value_type, Iter2::value_type> Pred>
+//   requires CopyConstructible<Pred>
+//   constexpr pair<Iter1, Iter2>   // constexpr after c++17
+//   mismatch(Iter1 first1, Iter1 last1, Iter2 first2, Pred pred);
+//
+// template<InputIterator Iter1, InputIterator Iter2, Predicate Pred>
+//   constexpr pair<Iter1, Iter2>   // constexpr after c++17
+//   mismatch(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2, Pred pred); // C++14
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "counting_predicates.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool eq(int a, int b) { return a == b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+    int ib[] = {1, 3};
+    int ic[] = {1, 3, 5, 7};
+    typedef cpp17_input_iterator<int*>         II;
+    typedef bidirectional_iterator<int*> BI;
+
+    auto p1 = std::mismatch(std::begin(ia), std::end(ia), std::begin(ic), eq);
+    if (p1.first != ia+2 || p1.second != ic+2)
+        return false;
+
+    auto p2 = std::mismatch(std::begin(ia), std::end(ia), std::begin(ic), std::end(ic), eq);
+    if (p2.first != ia+2 || p2.second != ic+2)
+        return false;
+
+    auto p3 = std::mismatch(std::begin(ib), std::end(ib), std::begin(ic), eq);
+    if (p3.first != ib+2 || p3.second != ic+2)
+        return false;
+
+    auto p4 = std::mismatch(std::begin(ib), std::end(ib), std::begin(ic), std::end(ic), eq);
+    if (p4.first != ib+2 || p4.second != ic+2)
+        return false;
+
+    auto p5 = std::mismatch(II(std::begin(ib)), II(std::end(ib)), II(std::begin(ic)), eq);
+    if (p5.first != II(ib+2) || p5.second != II(ic+2))
+        return false;
+    auto p6 = std::mismatch(BI(std::begin(ib)), BI(std::end(ib)), BI(std::begin(ic)), BI(std::end(ic)), eq);
+    if (p6.first != BI(ib+2) || p6.second != BI(ic+2))
+        return false;
+
+    return true;
+    }
+#endif
+
+
+#if TEST_STD_VER > 11
+#define HAS_FOUR_ITERATOR_VERSION
+#endif
+
+int main(int, char**)
+{
+    int ia[] = {0, 1, 2, 2, 0, 1, 2, 3};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {0, 1, 2, 3, 0, 1, 2, 3};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]); ((void)sb); // unused in C++11
+
+    typedef cpp17_input_iterator<const int*> II;
+    typedef random_access_iterator<const int*>  RAI;
+    typedef std::equal_to<int> EQ;
+
+    assert(std::mismatch(II(ia), II(ia + sa), II(ib), EQ())
+            == (std::pair<II, II>(II(ia+3), II(ib+3))));
+    assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib), EQ())
+            == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
+
+    binary_counting_predicate<EQ, int> bcp((EQ()));
+    assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib), std::ref(bcp))
+            == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
+    assert(bcp.count() > 0 && bcp.count() < sa);
+    bcp.reset();
+
+#if TEST_STD_VER >= 14
+    assert(std::mismatch(II(ia), II(ia + sa), II(ib), II(ib + sb), EQ())
+            == (std::pair<II, II>(II(ia+3), II(ib+3))));
+    assert(std::mismatch(RAI(ia), RAI(ia + sa), RAI(ib), RAI(ib + sb), EQ())
+            == (std::pair<RAI, RAI>(RAI(ia+3), RAI(ib+3))));
+
+    assert(std::mismatch(II(ia), II(ia + sa), II(ib), II(ib + sb), std::ref(bcp))
+            == (std::pair<II, II>(II(ia+3), II(ib+3))));
+    assert(bcp.count() > 0 && bcp.count() < std::min(sa, sb));
+#endif
+
+    assert(std::mismatch(ia, ia + sa, ib, EQ()) ==
+           (std::pair<int*,int*>(ia+3,ib+3)));
+
+#if TEST_STD_VER >= 14
+    assert(std::mismatch(ia, ia + sa, ib, ib + sb, EQ()) ==
+           (std::pair<int*,int*>(ia+3,ib+3)));
+    assert(std::mismatch(ia, ia + sa, ib, ib + 2, EQ()) ==
+           (std::pair<int*,int*>(ia+2,ib+2)));
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/ranges_mismatch.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/ranges_mismatch.pass.cpp
new file mode 100644
index 0000000..3f4ef77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.nonmodifying/mismatch/ranges_mismatch.pass.cpp
@@ -0,0 +1,293 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <input_iterator I1, sentinel_for<_I1> S1, input_iterator I2, sentinel_for<_I2> S2,
+//           class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
+// constexpr mismatch_result<_I1, _I2>
+// ranges::mismatch()(I1 first1, S1 last1, I2 first2, S2 last2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {})
+
+// template <input_range R1, input_range R2,
+//           class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
+// constexpr mismatch_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>>
+// ranges::mismatch(R1&& r1, R2&& r2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {})
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2>
+constexpr void test_iterators(Iter1 begin1, Iter1 end1, Iter2 begin2, Iter2 end2, int* expected1, int* expected2) {
+  using Expected = std::ranges::mismatch_result<Iter1, Iter2>;
+  std::same_as<Expected> auto ret = std::ranges::mismatch(std::move(begin1), sentinel_wrapper<Iter1>(std::move(end1)),
+                                                          std::move(begin2), sentinel_wrapper<Iter2>(std::move(end2)));
+  assert(base(ret.in1) == expected1);
+  assert(base(ret.in2) == expected2);
+}
+
+template <class Iter1, class Iter2>
+constexpr void test_iters() {
+  int a[] = {1, 2, 3, 4, 5};
+  int b[] = {1, 2, 3, 5, 4};
+
+  test_iterators(Iter1(a), Iter1(a + 5), Iter2(b), Iter2(b + 5), a + 3, b + 3);
+}
+
+constexpr bool test() {
+  test_iters<cpp17_input_iterator<int*>, cpp17_input_iterator<int*>>();
+  test_iters<cpp17_input_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iters<cpp17_input_iterator<int*>, forward_iterator<int*>>();
+  test_iters<cpp17_input_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iters<cpp17_input_iterator<int*>, random_access_iterator<int*>>();
+  test_iters<cpp17_input_iterator<int*>, contiguous_iterator<int*>>();
+  test_iters<cpp17_input_iterator<int*>, int*>();
+
+  test_iters<cpp20_input_iterator<int*>, cpp17_input_iterator<int*>>();
+  test_iters<cpp20_input_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iters<cpp20_input_iterator<int*>, forward_iterator<int*>>();
+  test_iters<cpp20_input_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iters<cpp20_input_iterator<int*>, random_access_iterator<int*>>();
+  test_iters<cpp20_input_iterator<int*>, contiguous_iterator<int*>>();
+  test_iters<cpp20_input_iterator<int*>, int*>();
+
+  test_iters<forward_iterator<int*>, cpp17_input_iterator<int*>>();
+  test_iters<forward_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iters<forward_iterator<int*>, forward_iterator<int*>>();
+  test_iters<forward_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iters<forward_iterator<int*>, random_access_iterator<int*>>();
+  test_iters<forward_iterator<int*>, contiguous_iterator<int*>>();
+  test_iters<forward_iterator<int*>, int*>();
+
+  test_iters<bidirectional_iterator<int*>, cpp17_input_iterator<int*>>();
+  test_iters<bidirectional_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iters<bidirectional_iterator<int*>, forward_iterator<int*>>();
+  test_iters<bidirectional_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iters<bidirectional_iterator<int*>, random_access_iterator<int*>>();
+  test_iters<bidirectional_iterator<int*>, contiguous_iterator<int*>>();
+  test_iters<bidirectional_iterator<int*>, int*>();
+
+  test_iters<random_access_iterator<int*>, cpp17_input_iterator<int*>>();
+  test_iters<random_access_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iters<random_access_iterator<int*>, forward_iterator<int*>>();
+  test_iters<random_access_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iters<random_access_iterator<int*>, random_access_iterator<int*>>();
+  test_iters<random_access_iterator<int*>, contiguous_iterator<int*>>();
+  test_iters<random_access_iterator<int*>, int*>();
+
+  test_iters<contiguous_iterator<int*>, cpp17_input_iterator<int*>>();
+  test_iters<contiguous_iterator<int*>, cpp20_input_iterator<int*>>();
+  test_iters<contiguous_iterator<int*>, forward_iterator<int*>>();
+  test_iters<contiguous_iterator<int*>, bidirectional_iterator<int*>>();
+  test_iters<contiguous_iterator<int*>, random_access_iterator<int*>>();
+  test_iters<contiguous_iterator<int*>, contiguous_iterator<int*>>();
+  test_iters<contiguous_iterator<int*>, int*>();
+
+  test_iters<int*, cpp17_input_iterator<int*>>();
+  test_iters<int*, cpp20_input_iterator<int*>>();
+  test_iters<int*, forward_iterator<int*>>();
+  test_iters<int*, bidirectional_iterator<int*>>();
+  test_iters<int*, random_access_iterator<int*>>();
+  test_iters<int*, contiguous_iterator<int*>>();
+  test_iters<int*, int*>();
+
+  { // test with a range
+    std::array<int, 5> a = {1, 2, 3, 4, 5};
+    std::array<int, 5> b = {1, 2, 3, 5, 4};
+    using Expected = std::ranges::mismatch_result<int*, int*>;
+    std::same_as<Expected> auto ret = std::ranges::mismatch(a, b);
+    assert(ret.in1 == a.begin() + 3);
+    assert(ret.in2 == b.begin() + 3);
+  }
+
+  { // test with non-iterator sentinel
+    int a[] = {1, 2, 3, 4, 5};
+    int b[] = {1, 2, 3, 5, 4};
+
+    using Iter = int*;
+    using Sentinel = sentinel_wrapper<Iter>;
+    using Expected = std::ranges::mismatch_result<Iter, Iter>;
+
+    std::same_as<Expected> auto r = std::ranges::mismatch(Iter(a), Sentinel(a + 5), Iter(b), Sentinel(b + 5));
+    assert(r.in1 == a + 3);
+    assert(r.in2 == b + 3);
+  }
+
+  { // test with different array sizes
+    {
+      int a[] = {1, 2, 3};
+      int b[] = {1, 2};
+      test_iterators(a, a + 3, b, b + 2, a + 2, b + 2);
+      using Expected = std::ranges::mismatch_result<int*, int*>;
+      std::same_as<Expected> auto ret = std::ranges::mismatch(a, b);
+      assert(ret.in1 == a + 2);
+      assert(ret.in2 == b + 2);
+    }
+    {
+      int a[] = {1, 2};
+      int b[] = {1, 2, 3};
+      test_iterators(a, a + 2, b, b + 3, a + 2, b + 2);
+      using Expected = std::ranges::mismatch_result<int*, int*>;
+      std::same_as<Expected> auto ret = std::ranges::mismatch(a, b);
+      assert(ret.in1 == a + 2);
+      assert(ret.in2 == b + 2);
+    }
+  }
+
+  { // test with borrowed ranges
+    int r1[] = {1, 2, 3, 4, 5};
+    int r2[] = {1, 2, 3, 5, 4};
+
+    using Expected = std::ranges::mismatch_result<int*, int*>;
+    {
+      std::same_as<Expected> auto ret = std::ranges::mismatch(r1, std::views::all(r2));
+      assert(ret.in1 == r1 + 3);
+      assert(ret.in2 == r2 + 3);
+    }
+    {
+      std::same_as<Expected> auto ret = std::ranges::mismatch(std::views::all(r1), r2);
+      assert(ret.in1 == r1 + 3);
+      assert(ret.in2 == r2 + 3);
+    }
+    {
+      std::same_as<Expected> auto ret = std::ranges::mismatch(std::views::all(r1), std::views::all(r2));
+      assert(ret.in1 == r1 + 3);
+      assert(ret.in2 == r2 + 3);
+    }
+  }
+
+  { // test structured bindings
+    int a[] = {1, 2, 3, 4};
+    int b[] = {1, 2, 4, 8, 16};
+    auto [ai, bi] = std::ranges::mismatch(a, b);
+    assert(ai == a + 2);
+    assert(bi == b + 2);
+    auto [aj, bj] = std::ranges::mismatch(a, a+4, b, b+5);
+    assert(aj == a + 2);
+    assert(bj == b + 2);
+  }
+
+  { // test predicate
+    {
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      int b[] = {6, 5, 8, 2, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, a + 8, b, b + 8, std::ranges::greater{});
+      assert(ret.in1 == a + 4);
+      assert(ret.in2 == b + 4);
+      assert(*ret.in1 == 5);
+      assert(*ret.in2 == 5);
+    }
+
+    {
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      int b[] = {6, 5, 8, 2, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, b, std::ranges::greater{});
+      assert(ret.in1 == a + 4);
+      assert(ret.in2 == b + 4);
+      assert(*ret.in1 == 5);
+      assert(*ret.in2 == 5);
+    }
+  }
+
+  { // test projection
+    {
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      int b[] = {6, 5, 8, 2, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, b,
+                                       std::ranges::greater{},
+                                       [](int i) { return i == 5 ? +100 : i; },
+                                       [](int i) { return i == 5 ? -100 : i; });
+      assert(ret.in1 == a + 5);
+      assert(ret.in2 == b + 5);
+      assert(*ret.in1 == 1);
+      assert(*ret.in2 == 1);
+    }
+    {
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, a,
+                                       std::less<double>{},
+                                       [](int i) { return i * 1.01; },
+                                       [c = 0](int i) mutable { return c++ < 5 ? i * 1.02 : i; });
+      assert(ret.in1 == a + 5);
+      assert(ret.in2 == a + 5);
+      assert(*ret.in1 == 1);
+      assert(*ret.in2 == 1);
+    }
+    {
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      int b[] = {6, 5, 8, 2, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, a + 8, b, b + 8,
+                                       std::ranges::greater{},
+                                       [](int i) { return i == 5 ? +100 : i; },
+                                       [](int i) { return i == 5 ? -100 : i; });
+      assert(ret.in1 == a + 5);
+      assert(ret.in2 == b + 5);
+      assert(*ret.in1 == 1);
+      assert(*ret.in2 == 1);
+    }
+    {
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, a + 8, a, a + 8,
+                                       std::less<double>{},
+                                       [](int i) { return i * 1.01; },
+                                       [c = 0](int i) mutable { return c++ < 5 ? i * 1.02 : i; });
+      assert(ret.in1 == a + 5);
+      assert(ret.in2 == a + 5);
+      assert(*ret.in1 == 1);
+      assert(*ret.in2 == 1);
+    }
+  }
+
+  { // test predicate and projection call count
+    {
+      int pred_count = 0;
+      int proj1_count = 0;
+      int proj2_count = 0;
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, a,
+                                       [&](int lhs, int rhs) { ++pred_count; return lhs == rhs; },
+                                       [&](int i) { ++proj1_count; return i; },
+                                       [&](int i) { ++proj2_count; return i; });
+      assert(ret.in1 == a + 8);
+      assert(ret.in2 == a + 8);
+      assert(pred_count == 8);
+      assert(proj1_count == 8);
+      assert(proj2_count == 8);
+    }
+    {
+      int pred_count = 0;
+      int proj1_count = 0;
+      int proj2_count = 0;
+      int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+      auto ret = std::ranges::mismatch(a, a + 8, a, a + 8,
+                                       [&](int lhs, int rhs) { ++pred_count; return lhs == rhs; },
+                                       [&](int i) { ++proj1_count; return i; },
+                                       [&](int i) { ++proj2_count; return i; });
+      assert(ret.in1 == a + 8);
+      assert(ret.in2 == a + 8);
+      assert(pred_count == 8);
+      assert(proj1_count == 8);
+      assert(proj2_count == 8);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search.pass.cpp
new file mode 100644
index 0000000..3d04d51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   constexpr bool      // constexpr after C++17
+//   binary_search(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool lt(int a, int b) { return a < b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 3, 6, 7};
+
+    return  std::binary_search(std::begin(ia), std::end(ia), 1)
+        &&  std::binary_search(std::begin(ia), std::end(ia), 3)
+        && !std::binary_search(std::begin(ia), std::end(ia), 9)
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value, bool x)
+{
+    assert(std::binary_search(first, last, value) == x);
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end());
+    for (x = 0; x < M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x, true);
+    test(Iter(v.data()), Iter(v.data()+v.size()), -1, false);
+    test(Iter(v.data()), Iter(v.data()+v.size()), M, false);
+}
+
+int main(int, char**)
+{
+    int d[] = {0, 2, 4, 6};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 7; ++x)
+            test(d, e, x, (x % 2 == 0) && ((e-d)*2 > x));
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search_comp.pass.cpp
new file mode 100644
index 0000000..a447853
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/binary_search_comp.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T, CopyConstructible Compare>
+//   constexpr bool      // constexpr after C++17
+//   binary_search(Iter first, Iter last, const T& value, Compare comp);
+
+#include <algorithm>
+#include <vector>
+#include <functional>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool lt(int a, int b) { return a < b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 3, 6, 7};
+
+    return  std::binary_search(std::begin(ia), std::end(ia), 1, lt)
+        &&  std::binary_search(std::begin(ia), std::end(ia), 3, lt)
+        && !std::binary_search(std::begin(ia), std::end(ia), 9, lt)
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value, bool x)
+{
+    assert(std::binary_search(first, last, value, std::greater<int>()) == x);
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end(), std::greater<int>());
+    for (x = 0; x < M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x, true);
+    test(Iter(v.data()), Iter(v.data()+v.size()), -1, false);
+    test(Iter(v.data()), Iter(v.data()+v.size()), M, false);
+}
+
+int main(int, char**)
+{
+    int d[] = {6, 4, 2, 0};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 7; ++x)
+            test(d, e, x, (x % 2 == 0) && e != d && (-2*(e-d) + 8 <= x));
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/ranges.binary_search.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/ranges.binary_search.pass.cpp
new file mode 100644
index 0000000..a1abdaf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/binary.search/ranges.binary_search.pass.cpp
@@ -0,0 +1,175 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
+//   constexpr bool ranges::binary_search(I first, S last, const T& value, Comp comp = {},
+//                                        Proj proj = {});
+// template<forward_range R, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
+//            ranges::less>
+//   constexpr bool ranges::binary_search(R&& r, const T& value, Comp comp = {},
+//                                        Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct NotLessThanComparable {};
+
+template <class It, class Sent = It>
+concept HasLowerBoundIt = requires(It it, Sent sent) { std::ranges::binary_search(it, sent, 1); };
+
+static_assert(HasLowerBoundIt<int*>);
+static_assert(!HasLowerBoundIt<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>);
+static_assert(!HasLowerBoundIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasLowerBoundIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasLowerBoundIt<NotLessThanComparable*>);
+
+template <class Range>
+concept HasLowerBoundR = requires(Range range) { std::ranges::binary_search(range, 1); };
+
+static_assert(HasLowerBoundR<std::array<int, 1>>);
+static_assert(!HasLowerBoundR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasLowerBoundR<ForwardRangeNotIncrementable>);
+static_assert(!HasLowerBoundR<UncheckedRange<NotLessThanComparable*>>);
+
+template <class Pred>
+concept HasLowerBoundPred = requires(int* it, Pred pred) {std::ranges::binary_search(it, it, 1, pred); };
+
+static_assert(HasLowerBoundPred<std::ranges::less>);
+static_assert(!HasLowerBoundPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasLowerBoundPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class It, class Sent = It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      std::same_as<bool> auto ret = std::ranges::binary_search(It(a), Sent(It(a + 6)), 3);
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto range = std::ranges::subrange(It(a), Sent(It(a + 6)));
+      std::same_as<bool> auto ret = std::ranges::binary_search(range, 3);
+      assert(ret);
+    }
+  }
+
+  { // check that the predicate is used
+    int a[] = {6, 5, 4, 3, 2, 1};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 6)), 2, std::ranges::greater{}));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 6)));
+    assert(std::ranges::binary_search(range, 2, std::ranges::greater{}));
+  }
+
+  { // check that the projection is used
+    int a[] = {1, 2, 3, 4, 5, 6};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 6)), 0, {}, [](int i) { return i - 3; }));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 6)));
+    assert(std::ranges::binary_search(range, 0, {}, [](int i) { return i - 3; }));
+  }
+
+  { // check that true is returned with multiple matches
+    int a[] = {1, 2, 2, 2, 3};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 5)), 2));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 5)));
+    assert(std::ranges::binary_search(range, 2));
+  }
+
+  { // check that false is returned if all elements compare less than
+    int a[] = {1, 2, 3, 4};
+    assert(!std::ranges::binary_search(It(a), Sent(It(a + 4)), 5));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+    assert(!std::ranges::binary_search(range, 5));
+  }
+
+  { // check that false is returned if no element compares less than
+    int a[] = {1, 2, 3, 4};
+    assert(!std::ranges::binary_search(It(a), Sent(It(a + 4)), 0));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 4)));
+    assert(!std::ranges::binary_search(range, 0));
+  }
+
+  { // check that a single element works
+    int a[] = {1};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 1)), 1));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 1)));
+    assert(std::ranges::binary_search(range, 1));
+  }
+
+  { // check that an even number of elements works and that searching for the first element works
+    int a[] = {1, 2, 7, 8, 10, 11};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 6)), 1));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 6)));
+    assert(std::ranges::binary_search(range, 1));
+  }
+
+  { // check that an odd number of elements works and that searching for the last element works
+    int a[] = {1, 2, 7, 10, 11};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 5)), 11));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 5)));
+    assert(std::ranges::binary_search(range, 11));
+  }
+
+  { // check that it works when all but the searched for elements are equal
+    int a[] = {1, 2, 2, 2, 2};
+    assert(std::ranges::binary_search(It(a), Sent(It(a + 5)), 1));
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 5)));
+    assert(std::ranges::binary_search(range, 1));
+  }
+}
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>>();
+
+  { // check that std::invoke is used
+    struct S { int check; int other; };
+    S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+    assert(std::ranges::binary_search(a, a + 6, 4, {}, &S::check));
+    assert(std::ranges::binary_search(a, 4, {}, &S::check));
+  }
+
+  { // check that an empty range works
+    std::array<int, 0> a;
+    assert(!std::ranges::binary_search(a.begin(), a.end(), 1));
+    assert(!std::ranges::binary_search(a, 1));
+  }
+
+  { // check that a non-const operator() works
+    struct Func {
+      constexpr bool operator()(const int& i, const int& j) { return i < j; }
+    };
+    int a[] = {1, 6, 9, 10, 23};
+    assert(std::ranges::binary_search(a, 6, Func{}));
+    assert(std::ranges::binary_search(a, a + 5, 6, Func{}));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/equal_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/equal_range.pass.cpp
new file mode 100644
index 0000000..e22bd5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/equal_range.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   requires HasLess<T, Iter::value_type>
+//         && HasLess<Iter::value_type, T>
+//   constexpr pair<Iter, Iter>   // constexpr after c++17
+//   equal_range(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool lt(int a, int b) { return a < b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 3, 6, 7};
+
+    return (std::equal_range(std::begin(ia), std::end(ia), 1, lt) == std::pair<int *, int *>(ia+0, ia+1))
+        && (std::equal_range(std::begin(ia), std::end(ia), 3, lt) == std::pair<int *, int *>(ia+1, ia+3))
+        && (std::equal_range(std::begin(ia), std::end(ia), 9, lt) == std::pair<int *, int *>(std::end(ia), std::end(ia)))
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value)
+{
+    std::pair<Iter, Iter> i = std::equal_range(first, last, value);
+    for (Iter j = first; j != i.first; ++j)
+        assert(*j < value);
+    for (Iter j = i.first; j != last; ++j)
+        assert(!(*j < value));
+    for (Iter j = first; j != i.second; ++j)
+        assert(!(value < *j));
+    for (Iter j = i.second; j != last; ++j)
+        assert(value < *j);
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end());
+    for (x = 0; x <= M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x);
+}
+
+int main(int, char**)
+{
+    int d[] = {0, 1, 2, 3};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 4; ++x)
+            test(d, e, x);
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/equal_range_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/equal_range_comp.pass.cpp
new file mode 100644
index 0000000..ab36e70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/equal_range_comp.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T, CopyConstructible Compare>
+//   constexpr pair<Iter, Iter>   // constexpr after c++17
+//   equal_range(Iter first, Iter last, const T& value, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool lt(int a, int b) { return a < b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 3, 6, 7};
+
+    return (std::equal_range(std::begin(ia), std::end(ia), 1, lt) == std::pair<int *, int *>(ia+0, ia+1))
+        && (std::equal_range(std::begin(ia), std::end(ia), 3, lt) == std::pair<int *, int *>(ia+1, ia+3))
+        && (std::equal_range(std::begin(ia), std::end(ia), 9, lt) == std::pair<int *, int *>(std::end(ia), std::end(ia)))
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value)
+{
+    std::pair<Iter, Iter> i = std::equal_range(first, last, value, std::greater<int>());
+    for (Iter j = first; j != i.first; ++j)
+        assert(std::greater<int>()(*j, value));
+    for (Iter j = i.first; j != last; ++j)
+        assert(!std::greater<int>()(*j, value));
+    for (Iter j = first; j != i.second; ++j)
+        assert(!std::greater<int>()(value, *j));
+    for (Iter j = i.second; j != last; ++j)
+        assert(std::greater<int>()(value, *j));
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end(), std::greater<int>());
+    for (x = 0; x <= M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x);
+}
+
+int main(int, char**)
+{
+    int d[] = {3, 2, 1, 0};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 4; ++x)
+            test(d, e, x);
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/ranges_equal_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/ranges_equal_range.pass.cpp
new file mode 100644
index 0000000..5185267
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/equal.range/ranges_equal_range.pass.cpp
@@ -0,0 +1,228 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
+//   constexpr subrange<I>
+//     equal_range(I first, S last, const T& value, Comp comp = {}, Proj proj = {});                // Since C++20
+//
+// template<forward_range R, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
+//            ranges::less>
+//   constexpr borrowed_subrange_t<R>
+//     equal_range(R&& r, const T& value, Comp comp = {}, Proj proj = {});                          // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+struct Foo {};
+
+template <class Iter, class Sent, class T, class Proj = std::identity, class Comp = std::ranges::less>
+concept HasEqualRangeIter =
+    requires(Iter&& iter, Sent&& sent, const T& value, Comp&& comp, Proj&& proj) {
+      std::ranges::equal_range(
+          std::forward<Iter>(iter),
+          std::forward<Sent>(sent),
+          value,
+          std::forward<Comp>(comp),
+          std::forward<Proj>(proj));
+    };
+
+static_assert(HasEqualRangeIter<int*, int*, int>);
+
+// !forward_iterator<I>
+static_assert(!HasEqualRangeIter<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>, int>);
+
+// !sentinel_for<S, I>
+static_assert(!HasEqualRangeIter<int*, SentinelForNotSemiregular, int>);
+
+// !indirect_strict_weak_order<Comp, const T*, projected<I, Proj>>
+static_assert(!HasEqualRangeIter<int*, int*, Foo>);
+
+template <class R, class T, class Proj = std::identity, class Comp = std::ranges::less>
+concept HasEqualRangeForRange =
+    requires(R&& r, const T& value, Comp&& comp, Proj&& proj) {
+      std::ranges::equal_range(std::forward<R>(r), value, comp, proj);
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasEqualRangeForRange<R<int*>, int>);
+
+// !forward_range<R>
+static_assert(!HasEqualRangeForRange<R<cpp20_input_iterator<int*>>, int>);
+
+// !indirect_strict_weak_order<Comp, const T*, projected<ranges::iterator_t<R>, Proj>>
+static_assert(!HasEqualRangeForRange<R<int*>, Foo>);
+
+template <class InIter, std::size_t N>
+constexpr void testEqualRangeImpl(std::array<int, N>& in, int value, std::ranges::subrange<int*> expected) {
+  using Sent = sentinel_wrapper<InIter>;
+
+  // iterator overload
+  {
+    std::same_as<std::ranges::subrange<InIter, InIter>> decltype(auto) result =
+        std::ranges::equal_range(InIter{in.data()}, Sent{InIter{in.data() + in.size()}}, value);
+
+    assert(base(result.begin()) == expected.begin());
+    assert(base(result.end()) == expected.end());
+  }
+
+  // range overload
+  {
+    std::ranges::subrange r{InIter{in.data()}, Sent{InIter{in.data() + in.size()}}};
+    std::same_as<std::ranges::subrange<InIter, InIter>> decltype(auto) result = std::ranges::equal_range(r, value);
+
+    assert(base(result.begin()) == expected.begin());
+    assert(base(result.end()) == expected.end());
+  }
+}
+
+template <class InIter>
+constexpr void testImpl() {
+  // no match and the searched value would be in the middle
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    int value = 7;
+    std::ranges::subrange<int*> expected{in.data() + 4, in.data() + 4};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // value smaller than all the elements
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    int value = -1;
+    std::ranges::subrange<int*> expected{in.data(), in.data()};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // value bigger than all the elements
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    int value = 20;
+    std::ranges::subrange<int*> expected{in.data() + in.size(), in.data() + in.size()};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // exactly one match
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    int value = 5;
+    std::ranges::subrange<int*> expected{in.data() + 2, in.data() + 3};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // multiple matches
+  {
+    std::array in{0, 1, 5, 6, 6, 6, 9, 10};
+    int value = 6;
+    std::ranges::subrange<int*> expected{in.data() + 3, in.data() + 6};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // all matches
+  {
+    std::array in{6, 6, 6, 6, 6};
+    int value = 6;
+    std::ranges::subrange<int*> expected{in.data(), in.data() + in.size()};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // empty range
+  {
+    std::array<int, 0> in{};
+    int value = 6;
+    std::ranges::subrange<int*> expected{in.data(), in.data()};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+
+  // partially sorted
+  {
+    std::array in{3, 1, 5, 2, 6, 6, 10, 7, 8};
+    int value = 6;
+    std::ranges::subrange<int*> expected{in.data() + 4, in.data() + 6};
+    testEqualRangeImpl<InIter>(in, value, expected);
+  }
+}
+
+constexpr bool test() {
+  testImpl<forward_iterator<int*>>();
+  testImpl<bidirectional_iterator<int*>>();
+  testImpl<random_access_iterator<int*>>();
+  testImpl<contiguous_iterator<int*>>();
+
+  struct Data {
+    int data;
+  };
+
+  // Test custom comparator
+  {
+    std::array<Data, 10> in{{{2}, {1}, {3}, {3}, {3}, {10}, {9}, {5}, {5}, {7}}};
+    Data value{3};
+
+    const auto comp = [](const Data& x, const Data& y) { return x.data < y.data; };
+    // iterator overload
+    {
+      auto result = std::ranges::equal_range(in.begin(), in.end(), value, comp);
+
+      assert(result.begin() == in.begin() + 2);
+      assert(result.end() == in.begin() + 5);
+    }
+
+    // range overload
+    {
+      auto result = std::ranges::equal_range(in, value, comp);
+
+      assert(result.begin() == in.begin() + 2);
+      assert(result.end() == in.begin() + 5);
+    }
+  }
+
+  // Test custom projection
+  {
+    std::array<Data, 10> in{{{2}, {1}, {3}, {3}, {3}, {10}, {9}, {5}, {5}, {7}}};
+    int value = 3;
+
+    const auto proj = [](const Data& d) { return d.data; };
+    // iterator overload
+    {
+      auto result = std::ranges::equal_range(in.begin(), in.end(), value, {}, proj);
+
+      assert(result.begin() == in.begin() + 2);
+      assert(result.end() == in.begin() + 5);
+    }
+
+    // range overload
+    {
+      auto result = std::ranges::equal_range(in, value, {}, proj);
+
+      assert(result.begin() == in.begin() + 2);
+      assert(result.end() == in.begin() + 5);
+    }
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/lower_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/lower_bound.pass.cpp
new file mode 100644
index 0000000..a2d8ab6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/lower_bound.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   constexpr Iter    // constexpr after c++17
+//   lower_bound(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+
+TEST_CONSTEXPR bool eq(int a, int b) { return a == b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+
+    return (std::lower_bound(std::begin(ia), std::end(ia), 2) == ia+1)
+        && (std::lower_bound(std::begin(ia), std::end(ia), 3) == ia+1)
+        && (std::lower_bound(std::begin(ia), std::end(ia), 9) == std::end(ia))
+        ;
+    }
+#endif
+
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value)
+{
+    Iter i = std::lower_bound(first, last, value);
+    for (Iter j = first; j != i; ++j)
+        assert(*j < value);
+    for (Iter j = i; j != last; ++j)
+        assert(!(*j < value));
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end());
+    for (x = 0; x <= M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x);
+}
+
+int main(int, char**)
+{
+    int d[] = {0, 1, 2, 3};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 4; ++x)
+            test(d, e, x);
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/lower_bound_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/lower_bound_comp.pass.cpp
new file mode 100644
index 0000000..b913302
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/lower_bound_comp.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T, class Compare>
+//   constexpr Iter    // constexpr after c++17
+//   lower_bound(Iter first, Iter last, const T& value, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool lt(int a, int b) { return a < b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+
+    return (std::lower_bound(std::begin(ia), std::end(ia), 2, lt) == ia+1)
+        && (std::lower_bound(std::begin(ia), std::end(ia), 3, lt) == ia+1)
+        && (std::lower_bound(std::begin(ia), std::end(ia), 9, lt) == std::end(ia))
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value)
+{
+    Iter i = std::lower_bound(first, last, value, std::greater<int>());
+    for (Iter j = first; j != i; ++j)
+        assert(std::greater<int>()(*j, value));
+    for (Iter j = i; j != last; ++j)
+        assert(!std::greater<int>()(*j, value));
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end(), std::greater<int>());
+    for (x = 0; x <= M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x);
+}
+
+int main(int, char**)
+{
+    int d[] = {3, 2, 1, 0};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 4; ++x)
+            test(d, e, x);
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/ranges.lower_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/ranges.lower_bound.pass.cpp
new file mode 100644
index 0000000..e7af57b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/lower.bound/ranges.lower_bound.pass.cpp
@@ -0,0 +1,273 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
+//   constexpr I ranges::lower_bound(I first, S last, const T& value, Comp comp = {},
+//                                   Proj proj = {});
+// template<forward_range R, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
+//            ranges::less>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::lower_bound(R&& r, const T& value, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct NotLessThanComparable {};
+
+template <class It, class Sent = It>
+concept HasLowerBoundIt = requires(It it, Sent sent) { std::ranges::lower_bound(it, sent, 1); };
+
+static_assert(HasLowerBoundIt<int*>);
+static_assert(!HasLowerBoundIt<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>);
+static_assert(!HasLowerBoundIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasLowerBoundIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasLowerBoundIt<NotLessThanComparable*>);
+
+template <class Range>
+concept HasLowerBoundR = requires(Range range) { std::ranges::lower_bound(range, 1); };
+
+static_assert(HasLowerBoundR<std::array<int, 1>>);
+static_assert(!HasLowerBoundR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasLowerBoundR<ForwardRangeNotIncrementable>);
+static_assert(!HasLowerBoundR<UncheckedRange<NotLessThanComparable*>>);
+
+template <class Pred>
+concept HasLowerBoundPred = requires(int* it, Pred pred) {std::ranges::lower_bound(it, it, 1, pred); };
+
+static_assert(HasLowerBoundPred<std::ranges::less>);
+static_assert(!HasLowerBoundPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasLowerBoundPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      std::same_as<It> auto ret = std::ranges::lower_bound(It(a), It(a + 6), 3);
+      assert(base(ret) == a + 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      std::same_as<It> auto ret = std::ranges::lower_bound(range, 3);
+      assert(base(ret) == a + 2);
+    }
+  }
+
+  { // check that the predicate is used
+    {
+      int a[] = {6, 5, 4, 3, 2, 1};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 6), 2, std::ranges::greater{});
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {6, 5, 4, 3, 2, 1};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::lower_bound(range, 2, std::ranges::greater{});
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that the projection is used
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 6), 0, {}, [](int i) { return i - 3; });
+      assert(base(ret) == a + 2);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::lower_bound(range, 0, {}, [](int i) { return i - 3; });
+      assert(base(ret) == a + 2);
+    }
+  }
+
+  { // check that the last lower bound is returned
+    {
+      int a[] = {1, 2, 2, 2, 3};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 5), 2);
+      assert(base(ret) == a + 1);
+    }
+    {
+      int a[] = {1, 2, 2, 2, 3};
+      auto range = std::ranges::subrange(It(a), It(a + 5));
+      auto ret = std::ranges::lower_bound(range, 2);
+      assert(base(ret) == a + 1);
+    }
+  }
+
+  { // check that end is returned if all elements compare less than
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 4), 5);
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), It(a + 4));
+      auto ret = std::ranges::lower_bound(range, 5);
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that the first element is returned if no element compares less than
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 4), 0);
+      assert(base(ret) == a);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), It(a + 4));
+      auto ret = std::ranges::lower_bound(range, 0);
+      assert(base(ret) == a);
+    }
+  }
+
+  { // check that a single element works
+    {
+      int a[] = {1};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 1), 1);
+      assert(base(ret) == a);
+    }
+    {
+      int a[] = {1};
+      auto range = std::ranges::subrange(It(a), It(a + 1));
+      auto ret = std::ranges::lower_bound(range, 1);
+      assert(base(ret) == a);
+    }
+  }
+
+  { // check that an even number of elements works
+    {
+      int a[] = {1, 3, 6, 6, 7, 8};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 6), 6);
+      assert(base(ret) == a + 2);
+    }
+    {
+      int a[] = {1, 3, 6, 6, 7, 8};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::lower_bound(range, 6);
+      assert(base(ret) == a + 2);
+    }
+  }
+
+  { // check that an odd number of elements works
+    {
+      int a[] = {1, 3, 6, 6, 7};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 5), 6);
+      assert(base(ret) == a + 2);
+    }
+    {
+      int a[] = {1, 3, 6, 6, 7};
+      auto range = std::ranges::subrange(It(a), It(a + 5));
+      auto ret = std::ranges::lower_bound(range, 6);
+      assert(base(ret) == a + 2);
+    }
+  }
+
+  { // check that it works when all but the searched for element are equal
+    {
+      int a[] = {1, 6, 6, 6, 6, 6};
+      auto ret = std::ranges::lower_bound(It(a), It(a + 6), 1);
+      assert(base(ret) == a);
+    }
+    {
+      int a[] = {1, 6, 6, 6, 6, 6};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::lower_bound(range, 1);
+      assert(base(ret) == a);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  { // check that std::invoke is used for the projections
+    {
+      struct S { int check; int other; };
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::lower_bound(a, a + 6, 4, {}, &S::check);
+      assert(ret == a + 3);
+    }
+    {
+      struct S { int check; int other; };
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::lower_bound(a, 4, {}, &S::check);
+      assert(ret == a + 3);
+    }
+  }
+
+  { // check that std::invoke is used for the predicate
+    struct S {
+      int check;
+      int other;
+
+      constexpr bool compare(const S& s) const {
+        return check < s.check;
+      }
+    };
+    {
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::lower_bound(a, a + 6, S{4, 0}, &S::compare);
+      assert(ret == a + 3);
+    }
+    {
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::lower_bound(a, S{4, 0}, &S::compare);
+      assert(ret == a + 3);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> a;
+      auto ret = std::ranges::lower_bound(a.begin(), a.end(), 1);
+      assert(ret == a.end());
+    }
+    {
+      std::array<int, 0> a;
+      auto ret = std::ranges::lower_bound(a, 1);
+      assert(ret == a.end());
+    }
+  }
+
+  { // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret = std::ranges::lower_bound(std::array{1, 2}, 1);
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    int a[] = {1, 2, 3};
+    std::same_as<int*> auto ret = std::ranges::lower_bound(std::views::all(a), 1);
+    assert(ret == a);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/ranges.upper_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/ranges.upper_bound.pass.cpp
new file mode 100644
index 0000000..762fd78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/ranges.upper_bound.pass.cpp
@@ -0,0 +1,272 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_iterator I, sentinel_for<I> S, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<I, Proj>> Comp = ranges::less>
+//   constexpr I ranges::upper_bound(I first, S last, const T& value, Comp comp = {}, Proj proj = {});
+// template<forward_range R, class T, class Proj = identity,
+//          indirect_strict_weak_order<const T*, projected<iterator_t<R>, Proj>> Comp =
+//            ranges::less>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::upper_bound(R&& r, const T& value, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct NotLessThanComparable {};
+
+template <class It, class Sent = It>
+concept HasUpperBoundIt = requires(It it, Sent sent) { std::ranges::upper_bound(it, sent, 1); };
+
+static_assert(HasUpperBoundIt<int*>);
+static_assert(!HasUpperBoundIt<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>);
+static_assert(!HasUpperBoundIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasUpperBoundIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasUpperBoundIt<NotLessThanComparable*>);
+
+template <class Range>
+concept HasUpperBoundR = requires(Range range) { std::ranges::upper_bound(range, 1); };
+
+static_assert(HasUpperBoundR<std::array<int, 1>>);
+static_assert(!HasUpperBoundR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasUpperBoundR<ForwardRangeNotIncrementable>);
+static_assert(!HasUpperBoundR<UncheckedRange<NotLessThanComparable*>>);
+
+template <class Pred>
+concept HasUpperBoundPred = requires(int* it, Pred pred) {std::ranges::upper_bound(it, it, 1, pred); };
+
+static_assert(HasUpperBoundPred<std::ranges::less>);
+static_assert(!HasUpperBoundPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasUpperBoundPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class It>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      std::same_as<It> auto ret = std::ranges::upper_bound(It(a), It(a + 6), 3);
+      assert(base(ret) == a + 3);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      std::same_as<It> auto ret = std::ranges::upper_bound(range, 3);
+      assert(base(ret) == a + 3);
+    }
+  }
+
+  { // check that the predicate is used
+    {
+      int a[] = {6, 5, 4, 3, 2, 1};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 6), 2, std::ranges::greater{});
+      assert(base(ret) == a + 5);
+    }
+    {
+      int a[] = {6, 5, 4, 3, 2, 1};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::upper_bound(range, 2, std::ranges::greater{});
+      assert(base(ret) == a + 5);
+    }
+  }
+
+  { // check that the projection is used
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 6), 0, {}, [](int i) { return i - 3; });
+      assert(base(ret) == a + 3);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5, 6};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::upper_bound(range, 0, {}, [](int i) { return i - 3; });
+      assert(base(ret) == a + 3);
+    }
+  }
+
+  { // check that the last upper bound is returned
+    {
+      int a[] = {1, 2, 2, 2, 3};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 5), 2);
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {1, 2, 2, 2, 3};
+      auto range = std::ranges::subrange(It(a), It(a + 5));
+      auto ret = std::ranges::upper_bound(range, 2);
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that end is returned if all elements compare less than
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 4), 5);
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), It(a + 4));
+      auto ret = std::ranges::upper_bound(range, 5);
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that the first element is returned if no element compares less than
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 4), 0);
+      assert(base(ret) == a);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(It(a), It(a + 4));
+      auto ret = std::ranges::upper_bound(range, 0);
+      assert(base(ret) == a);
+    }
+  }
+
+  { // check that a single element works
+    {
+      int a[] = {1};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 1), 1);
+      assert(base(ret) == a + 1);
+    }
+    {
+      int a[] = {1};
+      auto range = std::ranges::subrange(It(a), It(a + 1));
+      auto ret = std::ranges::upper_bound(range, 1);
+      assert(base(ret) == a + 1);
+    }
+  }
+
+  { // check that an even number of elements works
+    {
+      int a[] = {1, 3, 6, 6, 7, 8};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 6), 6);
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {1, 3, 6, 6, 7, 8};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::upper_bound(range, 6);
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that an odd number of elements works
+    {
+      int a[] = {1, 3, 6, 6, 7};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 5), 6);
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {1, 3, 6, 6, 7};
+      auto range = std::ranges::subrange(It(a), It(a + 5));
+      auto ret = std::ranges::upper_bound(range, 6);
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that it works when all but the searched for element are equal
+    {
+      int a[] = {1, 6, 6, 6, 6, 6};
+      auto ret = std::ranges::upper_bound(It(a), It(a + 6), 1);
+      assert(base(ret) == a + 1);
+    }
+    {
+      int a[] = {1, 6, 6, 6, 6, 6};
+      auto range = std::ranges::subrange(It(a), It(a + 6));
+      auto ret = std::ranges::upper_bound(range, 1);
+      assert(base(ret) == a + 1);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<int*>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+
+  { // check that std::invoke is used for the projections
+    {
+      struct S { int check; int other; };
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::upper_bound(a, a + 6, 4, {}, &S::check);
+      assert(ret == a + 4);
+    }
+    {
+      struct S { int check; int other; };
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::upper_bound(a, 4, {}, &S::check);
+      assert(ret == a + 4);
+    }
+  }
+
+  { // check that std::invoke is used for the predicate
+    struct S {
+      int check;
+      int other;
+
+      constexpr bool compare(const S& s) const {
+        return check < s.check;
+      }
+    };
+    {
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::upper_bound(a, a + 6, S{4, 0}, &S::compare);
+      assert(ret == a + 4);
+    }
+    {
+      S a[] = {{1, 6}, {2, 5}, {3, 4}, {4, 3}, {5, 2}, {6, 1}};
+      auto ret = std::ranges::upper_bound(a, S{4, 0}, &S::compare);
+      assert(ret == a + 4);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> a;
+      auto ret = std::ranges::upper_bound(a.begin(), a.end(), 1);
+      assert(ret == a.end());
+    }
+    {
+      std::array<int, 0> a;
+      auto ret = std::ranges::upper_bound(a, 1);
+      assert(ret == a.end());
+    }
+  }
+
+  { // check that ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret = std::ranges::upper_bound(std::array{1, 2}, 1);
+  }
+
+  { // check that an iterator is returned with a borrowing range
+    int a[] = {1, 2, 3};
+    std::same_as<int*> auto ret = std::ranges::upper_bound(std::views::all(a), 1);
+    assert(ret == a + 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/upper_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/upper_bound.pass.cpp
new file mode 100644
index 0000000..1f9babd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/upper_bound.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T>
+//   constexpr Iter    // constexpr after c++17
+//   upper_bound(Iter first, Iter last, const T& value);
+
+#include <algorithm>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+
+    return (std::upper_bound(std::begin(ia), std::end(ia), 2) == ia+1)
+        && (std::upper_bound(std::begin(ia), std::end(ia), 3) == ia+2)
+        && (std::upper_bound(std::begin(ia), std::end(ia), 9) == std::end(ia))
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value)
+{
+    Iter i = std::upper_bound(first, last, value);
+    for (Iter j = first; j != i; ++j)
+        assert(!(value < *j));
+    for (Iter j = i; j != last; ++j)
+        assert(value < *j);
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end());
+    for (x = 0; x <= M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x);
+}
+
+int main(int, char**)
+{
+    int d[] = {0, 1, 2, 3};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 4; ++x)
+            test(d, e, x);
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/upper_bound_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/upper_bound_comp.pass.cpp
new file mode 100644
index 0000000..86066a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.binary.search/upper.bound/upper_bound_comp.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, class T, Predicate<auto, T, Iter::value_type> Compare>
+//   constexpr Iter    // constexpr after c++17
+//   upper_bound(Iter first, Iter last, const T& value, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool lt(int a, int b) { return a < b; }
+
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 3, 6, 7};
+
+    return (std::upper_bound(std::begin(ia), std::end(ia), 2, lt) == ia+1)
+        && (std::upper_bound(std::begin(ia), std::end(ia), 3, lt) == ia+2)
+        && (std::upper_bound(std::begin(ia), std::end(ia), 9, lt) == std::end(ia))
+        ;
+    }
+#endif
+
+template <class Iter, class T>
+void
+test(Iter first, Iter last, const T& value)
+{
+    Iter i = std::upper_bound(first, last, value, std::greater<int>());
+    for (Iter j = first; j != i; ++j)
+        assert(!std::greater<int>()(value, *j));
+    for (Iter j = i; j != last; ++j)
+        assert(std::greater<int>()(value, *j));
+}
+
+template <class Iter>
+void
+test()
+{
+    const unsigned N = 1000;
+    const int M = 10;
+    std::vector<int> v(N);
+    int x = 0;
+    for (std::size_t i = 0; i < v.size(); ++i)
+    {
+        v[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    std::sort(v.begin(), v.end(), std::greater<int>());
+    for (x = 0; x <= M; ++x)
+        test(Iter(v.data()), Iter(v.data()+v.size()), x);
+}
+
+int main(int, char**)
+{
+    int d[] = {3, 2, 1, 0};
+    for (int* e = d; e <= d+4; ++e)
+        for (int x = -1; x <= 4; ++x)
+            test(d, e, x);
+
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/assert.ranges_clamp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/assert.ranges_clamp.pass.cpp
new file mode 100644
index 0000000..1ea5199
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/assert.ranges_clamp.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <algorithm>
+
+// In a call to `ranges::clamp(val, low, high)`, `low` must be `<= high`.
+
+#include <algorithm>
+#include <functional>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+  (void)std::ranges::clamp(1, 2, 0, std::ranges::greater{});
+  TEST_LIBCPP_ASSERT_FAILURE(std::ranges::clamp(1, 2, 0), "Bad bounds passed to std::ranges::clamp");
+
+  (void)std::ranges::clamp(1, 0, 2);
+  TEST_LIBCPP_ASSERT_FAILURE(
+      std::ranges::clamp(1, 0, 2, std::ranges::greater{}), "Bad bounds passed to std::ranges::clamp");
+
+  (void)std::ranges::clamp(1, 1, 1); // Equal bounds should be fine.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/clamp.comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/clamp.comp.pass.cpp
new file mode 100644
index 0000000..379b394
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/clamp.comp.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+// XFAIL: c++03, c++11, c++14
+
+// template<class T, class Compare>
+//   const T&
+//   clamp(const T& v, const T& lo, const T& hi, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Tag {
+    Tag() : val(0), tag("Default") {}
+    Tag(int a, const char *b) : val(a), tag(b) {}
+    ~Tag() {}
+
+    int val;
+    const char *tag;
+    };
+
+bool eq(const Tag& rhs, const Tag& lhs) { return rhs.val == lhs.val && rhs.tag == lhs.tag; }
+// bool operator==(const Tag& rhs, const Tag& lhs) { return rhs.val == lhs.val; }
+bool comp (const Tag& rhs, const Tag& lhs) { return rhs.val <  lhs.val; }
+
+
+template <class T, class C>
+void
+test(const T& v, const T& lo, const T& hi, C c, const T& x)
+{
+    assert(&std::clamp(v, lo, hi, c) == &x);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    int z = 0;
+    test(x, y, z, std::greater<int>(), x);
+    test(y, x, z, std::greater<int>(), y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    int z = -1;
+    test(x, y, z, std::greater<int>(), x);
+    test(y, x, z, std::greater<int>(), x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    int z = 0;
+    test(x, y, z, std::greater<int>(), y);
+    test(y, x, z, std::greater<int>(), y);
+    }
+
+    {
+//  If they're all the same, we should get the value back.
+    Tag x{0, "Zero-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{0, "Zero-z"};
+    assert(eq(std::clamp(x, y, z, comp), x));
+    assert(eq(std::clamp(y, x, z, comp), y));
+    }
+
+    {
+//  If it's the same as the lower bound, we get the value back.
+    Tag x{0, "Zero-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{1, "One-z"};
+    assert(eq(std::clamp(x, y, z, comp), x));
+    assert(eq(std::clamp(y, x, z, comp), y));
+    }
+
+    {
+//  If it's the same as the upper bound, we get the value back.
+    Tag x{1, "One-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{1, "One-z"};
+    assert(eq(std::clamp(x, y, z, comp), x));
+    assert(eq(std::clamp(z, y, x, comp), z));
+    }
+
+    {
+//  If the value is between, we should get the value back
+    Tag x{1, "One-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{2, "Two-z"};
+    assert(eq(std::clamp(x, y, z, comp), x));
+    assert(eq(std::clamp(y, x, z, comp), x));
+    }
+
+    {
+//  If the value is less than the 'lo', we should get the lo back.
+    Tag x{0, "Zero-x"};
+    Tag y{1, "One-y"};
+    Tag z{2, "Two-z"};
+    assert(eq(std::clamp(x, y, z, comp), y));
+    assert(eq(std::clamp(y, x, z, comp), y));
+    }
+    {
+//  If the value is greater than 'hi', we should get hi back.
+    Tag x{2, "Two-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{1, "One-z"};
+    assert(eq(std::clamp(x, y, z, comp), z));
+    assert(eq(std::clamp(y, z, x, comp), z));
+    }
+
+    {
+    typedef int T;
+    constexpr T x = 1;
+    constexpr T y = 0;
+    constexpr T z = 0;
+    static_assert(std::clamp(x, y, z, std::greater<T>()) == y, "" );
+    static_assert(std::clamp(y, x, z, std::greater<T>()) == y, "" );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/clamp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/clamp.pass.cpp
new file mode 100644
index 0000000..389e7b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/clamp.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+// XFAIL: c++03, c++11, c++14
+
+// template<class T>
+//   const T&
+//   clamp(const T& v, const T& lo, const T& hi);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Tag {
+    Tag() : val(0), tag("Default") {}
+    Tag(int a, const char *b) : val(a), tag(b) {}
+    ~Tag() {}
+
+    int val;
+    const char *tag;
+    };
+
+bool eq(const Tag& rhs, const Tag& lhs) { return rhs.val == lhs.val && rhs.tag == lhs.tag; }
+// bool operator==(const Tag& rhs, const Tag& lhs) { return rhs.val == lhs.val; }
+bool operator< (const Tag& rhs, const Tag& lhs) { return rhs.val <  lhs.val; }
+
+template <class T>
+void
+test(const T& a, const T& lo, const T& hi, const T& x)
+{
+    assert(&std::clamp(a, lo, hi) == &x);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    int z = 0;
+    test(x, y, z, x);
+    test(y, x, z, y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    int z = 2;
+    test(x, y, z, y);
+    test(y, x, z, y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    int z = 1;
+    test(x, y, z, x);
+    test(y, x, z, x);
+    }
+
+    {
+//  If they're all the same, we should get the value back.
+    Tag x{0, "Zero-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{0, "Zero-z"};
+    assert(eq(std::clamp(x, y, z), x));
+    assert(eq(std::clamp(y, x, z), y));
+    }
+
+    {
+//  If it's the same as the lower bound, we get the value back.
+    Tag x{0, "Zero-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{1, "One-z"};
+    assert(eq(std::clamp(x, y, z), x));
+    assert(eq(std::clamp(y, x, z), y));
+    }
+
+    {
+//  If it's the same as the upper bound, we get the value back.
+    Tag x{1, "One-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{1, "One-z"};
+    assert(eq(std::clamp(x, y, z), x));
+    assert(eq(std::clamp(z, y, x), z));
+    }
+
+    {
+//  If the value is between, we should get the value back
+    Tag x{1, "One-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{2, "Two-z"};
+    assert(eq(std::clamp(x, y, z), x));
+    assert(eq(std::clamp(y, x, z), x));
+    }
+
+    {
+//  If the value is less than the 'lo', we should get the lo back.
+    Tag x{0, "Zero-x"};
+    Tag y{1, "One-y"};
+    Tag z{2, "Two-z"};
+    assert(eq(std::clamp(x, y, z), y));
+    assert(eq(std::clamp(y, x, z), y));
+    }
+    {
+//  If the value is greater than 'hi', we should get hi back.
+    Tag x{2, "Two-x"};
+    Tag y{0, "Zero-y"};
+    Tag z{1, "One-z"};
+    assert(eq(std::clamp(x, y, z), z));
+    assert(eq(std::clamp(y, z, x), z));
+    }
+
+    {
+    typedef int T;
+    constexpr T x = 1;
+    constexpr T y = 0;
+    constexpr T z = 1;
+    static_assert(std::clamp(x, y, z) == x, "" );
+    static_assert(std::clamp(y, x, z) == x, "" );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/ranges.clamp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/ranges.clamp.pass.cpp
new file mode 100644
index 0000000..036552f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.clamp/ranges.clamp.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr const T&
+//     ranges::clamp(const T& v, const T& lo, const T& hi, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <functional>
+#include <utility>
+
+template <class T, class Comp = std::ranges::less, class Proj = std::identity>
+concept HasClamp =
+    requires(T&& val, T&& low, T&& high, Comp&& comp, Proj&& proj) {
+      std::ranges::clamp(std::forward<T>(val), std::forward<T>(low), std::forward<T>(high),
+          std::forward<Comp>(comp), std::forward<Proj>(proj));
+    };
+
+struct NoComp {};
+struct CreateNoComp {
+  auto operator()(int) const { return NoComp(); }
+};
+
+static_assert(HasClamp<int, std::ranges::less, std::identity>);
+static_assert(!HasClamp<NoComp>);
+static_assert(!HasClamp<int, NoComp>);
+static_assert(!HasClamp<int, std::ranges::less, CreateNoComp>);
+
+constexpr bool test() {
+  { // low < val < high
+    int val = 2;
+    int low = 1;
+    int high = 3;
+    std::same_as<const int&> decltype(auto) ret = std::ranges::clamp(val, low, high);
+    assert(ret == 2);
+    assert(&ret == &val);
+  }
+
+  { // low > val < high
+    assert(std::ranges::clamp(10, 20, 30) == 20);
+  }
+
+  { // low < val > high
+    assert(std::ranges::clamp(15, 5, 10) == 10);
+  }
+
+  { // low == val == high
+    int val = 10;
+    assert(&std::ranges::clamp(val, 10, 10) == &val);
+  }
+
+  { // Check that a custom comparator works.
+    assert(std::ranges::clamp(10, 30, 20, std::ranges::greater{}) == 20);
+  }
+
+  { // Check that a custom projection works.
+    struct S {
+      int i;
+
+      constexpr const int& lvalue_proj() const { return i; }
+      constexpr int prvalue_proj() const { return i; }
+    };
+
+    struct Comp {
+      constexpr bool operator()(const int& lhs, const int& rhs) const { return lhs < rhs; }
+      constexpr bool operator()(int&& lhs, int&& rhs) const { return lhs > rhs; }
+    };
+
+    auto val = S{10};
+    auto low = S{20};
+    auto high = S{30};
+    // Check that the value category of the projection return type is preserved.
+    assert(&std::ranges::clamp(val, low, high, Comp{}, &S::lvalue_proj) == &low);
+    assert(&std::ranges::clamp(val, high, low, Comp{}, &S::prvalue_proj) == &low);
+  }
+
+  { // Check that the implementation doesn't cause double moves (which could result from calling the projection on
+    // `value` once and then forwarding the result into the comparator).
+    struct CheckDoubleMove {
+      int i;
+      bool moved = false;
+
+      constexpr explicit CheckDoubleMove(int set_i) : i(set_i) {}
+      constexpr CheckDoubleMove(const CheckDoubleMove&) = default;
+      constexpr CheckDoubleMove(CheckDoubleMove&& rhs) noexcept : i(rhs.i) {
+        assert(!rhs.moved);
+        rhs.moved = true;
+      }
+    };
+
+    auto val = CheckDoubleMove{20};
+    auto low = CheckDoubleMove{10};
+    auto high = CheckDoubleMove{30};
+
+    auto moving_comp = [](CheckDoubleMove lhs, CheckDoubleMove rhs) { return lhs.i < rhs.i; };
+    auto prvalue_proj = [](const CheckDoubleMove& x) -> CheckDoubleMove { return x; };
+    assert(&std::ranges::clamp(val, low, high, moving_comp, prvalue_proj) == &val);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap.pass.cpp
new file mode 100644
index 0000000..8ccff2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap.pass.cpp
@@ -0,0 +1,542 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   constexpr bool   // constexpr after C++17
+//   is_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 1, 1, 1, 0, 1, 1};
+    int ib[] = {0, 0, 1, 0, 0, 0, 0};
+    return     std::is_heap(std::begin(ia), std::end(ia))
+           && !std::is_heap(std::begin(ib), std::end(ib));
+    }
+#endif
+
+void test()
+{
+    typedef random_access_iterator<int *> RI;
+    int i1[] = {0, 0};
+    assert(std::is_heap(i1, i1));
+    assert(std::is_heap(i1, i1+1) == (std::is_heap_until(i1, i1+1) == i1+1));
+    assert(std::is_heap(RI(i1), RI(i1)));
+    assert(std::is_heap(RI(i1), RI(i1+1)) == (std::is_heap_until(RI(i1), RI(i1+1)) == RI(i1+1)));
+
+    int i2[] = {0, 1};
+    int i3[] = {1, 0};
+    assert(std::is_heap(i1, i1+2) == (std::is_heap_until(i1, i1+2) == i1+2));
+    assert(std::is_heap(i2, i2+2) == (std::is_heap_until(i2, i2+2) == i2+2));
+    assert(std::is_heap(i3, i3+2) == (std::is_heap_until(i3, i3+2) == i3+2));
+    int i4[] = {0, 0, 0};
+    int i5[] = {0, 0, 1};
+    int i6[] = {0, 1, 0};
+    int i7[] = {0, 1, 1};
+    int i8[] = {1, 0, 0};
+    int i9[] = {1, 0, 1};
+    int i10[] = {1, 1, 0};
+    assert(std::is_heap(i4, i4+3) == (std::is_heap_until(i4, i4+3) == i4+3));
+    assert(std::is_heap(i5, i5+3) == (std::is_heap_until(i5, i5+3) == i5+3));
+    assert(std::is_heap(i6, i6+3) == (std::is_heap_until(i6, i6+3) == i6+3));
+    assert(std::is_heap(i7, i7+3) == (std::is_heap_until(i7, i7+3) == i7+3));
+    assert(std::is_heap(i8, i8+3) == (std::is_heap_until(i8, i8+3) == i8+3));
+    assert(std::is_heap(i9, i9+3) == (std::is_heap_until(i9, i9+3) == i9+3));
+    assert(std::is_heap(i10, i10+3) == (std::is_heap_until(i10, i10+3) == i10+3));
+    int i11[] = {0, 0, 0, 0};
+    int i12[] = {0, 0, 0, 1};
+    int i13[] = {0, 0, 1, 0};
+    int i14[] = {0, 0, 1, 1};
+    int i15[] = {0, 1, 0, 0};
+    int i16[] = {0, 1, 0, 1};
+    int i17[] = {0, 1, 1, 0};
+    int i18[] = {0, 1, 1, 1};
+    int i19[] = {1, 0, 0, 0};
+    int i20[] = {1, 0, 0, 1};
+    int i21[] = {1, 0, 1, 0};
+    int i22[] = {1, 0, 1, 1};
+    int i23[] = {1, 1, 0, 0};
+    int i24[] = {1, 1, 0, 1};
+    int i25[] = {1, 1, 1, 0};
+    assert(std::is_heap(i11, i11+4) == (std::is_heap_until(i11, i11+4) == i11+4));
+    assert(std::is_heap(i12, i12+4) == (std::is_heap_until(i12, i12+4) == i12+4));
+    assert(std::is_heap(i13, i13+4) == (std::is_heap_until(i13, i13+4) == i13+4));
+    assert(std::is_heap(i14, i14+4) == (std::is_heap_until(i14, i14+4) == i14+4));
+    assert(std::is_heap(i15, i15+4) == (std::is_heap_until(i15, i15+4) == i15+4));
+    assert(std::is_heap(i16, i16+4) == (std::is_heap_until(i16, i16+4) == i16+4));
+    assert(std::is_heap(i17, i17+4) == (std::is_heap_until(i17, i17+4) == i17+4));
+    assert(std::is_heap(i18, i18+4) == (std::is_heap_until(i18, i18+4) == i18+4));
+    assert(std::is_heap(i19, i19+4) == (std::is_heap_until(i19, i19+4) == i19+4));
+    assert(std::is_heap(i20, i20+4) == (std::is_heap_until(i20, i20+4) == i20+4));
+    assert(std::is_heap(i21, i21+4) == (std::is_heap_until(i21, i21+4) == i21+4));
+    assert(std::is_heap(i22, i22+4) == (std::is_heap_until(i22, i22+4) == i22+4));
+    assert(std::is_heap(i23, i23+4) == (std::is_heap_until(i23, i23+4) == i23+4));
+    assert(std::is_heap(i24, i24+4) == (std::is_heap_until(i24, i24+4) == i24+4));
+    assert(std::is_heap(i25, i25+4) == (std::is_heap_until(i25, i25+4) == i25+4));
+    int i26[] = {0, 0, 0, 0, 0};
+    int i27[] = {0, 0, 0, 0, 1};
+    int i28[] = {0, 0, 0, 1, 0};
+    int i29[] = {0, 0, 0, 1, 1};
+    int i30[] = {0, 0, 1, 0, 0};
+    int i31[] = {0, 0, 1, 0, 1};
+    int i32[] = {0, 0, 1, 1, 0};
+    int i33[] = {0, 0, 1, 1, 1};
+    int i34[] = {0, 1, 0, 0, 0};
+    int i35[] = {0, 1, 0, 0, 1};
+    int i36[] = {0, 1, 0, 1, 0};
+    int i37[] = {0, 1, 0, 1, 1};
+    int i38[] = {0, 1, 1, 0, 0};
+    int i39[] = {0, 1, 1, 0, 1};
+    int i40[] = {0, 1, 1, 1, 0};
+    int i41[] = {0, 1, 1, 1, 1};
+    int i42[] = {1, 0, 0, 0, 0};
+    int i43[] = {1, 0, 0, 0, 1};
+    int i44[] = {1, 0, 0, 1, 0};
+    int i45[] = {1, 0, 0, 1, 1};
+    int i46[] = {1, 0, 1, 0, 0};
+    int i47[] = {1, 0, 1, 0, 1};
+    int i48[] = {1, 0, 1, 1, 0};
+    int i49[] = {1, 0, 1, 1, 1};
+    int i50[] = {1, 1, 0, 0, 0};
+    int i51[] = {1, 1, 0, 0, 1};
+    int i52[] = {1, 1, 0, 1, 0};
+    int i53[] = {1, 1, 0, 1, 1};
+    int i54[] = {1, 1, 1, 0, 0};
+    int i55[] = {1, 1, 1, 0, 1};
+    int i56[] = {1, 1, 1, 1, 0};
+    assert(std::is_heap(i26, i26+5) == (std::is_heap_until(i26, i26+5) == i26+5));
+    assert(std::is_heap(i27, i27+5) == (std::is_heap_until(i27, i27+5) == i27+5));
+    assert(std::is_heap(i28, i28+5) == (std::is_heap_until(i28, i28+5) == i28+5));
+    assert(std::is_heap(i29, i29+5) == (std::is_heap_until(i29, i29+5) == i29+5));
+    assert(std::is_heap(i30, i30+5) == (std::is_heap_until(i30, i30+5) == i30+5));
+    assert(std::is_heap(i31, i31+5) == (std::is_heap_until(i31, i31+5) == i31+5));
+    assert(std::is_heap(i32, i32+5) == (std::is_heap_until(i32, i32+5) == i32+5));
+    assert(std::is_heap(i33, i33+5) == (std::is_heap_until(i33, i33+5) == i33+5));
+    assert(std::is_heap(i34, i34+5) == (std::is_heap_until(i34, i34+5) == i34+5));
+    assert(std::is_heap(i35, i35+5) == (std::is_heap_until(i35, i35+5) == i35+5));
+    assert(std::is_heap(i36, i36+5) == (std::is_heap_until(i36, i36+5) == i36+5));
+    assert(std::is_heap(i37, i37+5) == (std::is_heap_until(i37, i37+5) == i37+5));
+    assert(std::is_heap(i38, i38+5) == (std::is_heap_until(i38, i38+5) == i38+5));
+    assert(std::is_heap(i39, i39+5) == (std::is_heap_until(i39, i39+5) == i39+5));
+    assert(std::is_heap(i40, i40+5) == (std::is_heap_until(i40, i40+5) == i40+5));
+    assert(std::is_heap(i41, i41+5) == (std::is_heap_until(i41, i41+5) == i41+5));
+    assert(std::is_heap(i42, i42+5) == (std::is_heap_until(i42, i42+5) == i42+5));
+    assert(std::is_heap(i43, i43+5) == (std::is_heap_until(i43, i43+5) == i43+5));
+    assert(std::is_heap(i44, i44+5) == (std::is_heap_until(i44, i44+5) == i44+5));
+    assert(std::is_heap(i45, i45+5) == (std::is_heap_until(i45, i45+5) == i45+5));
+    assert(std::is_heap(i46, i46+5) == (std::is_heap_until(i46, i46+5) == i46+5));
+    assert(std::is_heap(i47, i47+5) == (std::is_heap_until(i47, i47+5) == i47+5));
+    assert(std::is_heap(i48, i48+5) == (std::is_heap_until(i48, i48+5) == i48+5));
+    assert(std::is_heap(i49, i49+5) == (std::is_heap_until(i49, i49+5) == i49+5));
+    assert(std::is_heap(i50, i50+5) == (std::is_heap_until(i50, i50+5) == i50+5));
+    assert(std::is_heap(i51, i51+5) == (std::is_heap_until(i51, i51+5) == i51+5));
+    assert(std::is_heap(i52, i52+5) == (std::is_heap_until(i52, i52+5) == i52+5));
+    assert(std::is_heap(i53, i53+5) == (std::is_heap_until(i53, i53+5) == i53+5));
+    assert(std::is_heap(i54, i54+5) == (std::is_heap_until(i54, i54+5) == i54+5));
+    assert(std::is_heap(i55, i55+5) == (std::is_heap_until(i55, i55+5) == i55+5));
+    assert(std::is_heap(i56, i56+5) == (std::is_heap_until(i56, i56+5) == i56+5));
+    int i57[] = {0, 0, 0, 0, 0, 0};
+    int i58[] = {0, 0, 0, 0, 0, 1};
+    int i59[] = {0, 0, 0, 0, 1, 0};
+    int i60[] = {0, 0, 0, 0, 1, 1};
+    int i61[] = {0, 0, 0, 1, 0, 0};
+    int i62[] = {0, 0, 0, 1, 0, 1};
+    int i63[] = {0, 0, 0, 1, 1, 0};
+    int i64[] = {0, 0, 0, 1, 1, 1};
+    int i65[] = {0, 0, 1, 0, 0, 0};
+    int i66[] = {0, 0, 1, 0, 0, 1};
+    int i67[] = {0, 0, 1, 0, 1, 0};
+    int i68[] = {0, 0, 1, 0, 1, 1};
+    int i69[] = {0, 0, 1, 1, 0, 0};
+    int i70[] = {0, 0, 1, 1, 0, 1};
+    int i71[] = {0, 0, 1, 1, 1, 0};
+    int i72[] = {0, 0, 1, 1, 1, 1};
+    int i73[] = {0, 1, 0, 0, 0, 0};
+    int i74[] = {0, 1, 0, 0, 0, 1};
+    int i75[] = {0, 1, 0, 0, 1, 0};
+    int i76[] = {0, 1, 0, 0, 1, 1};
+    int i77[] = {0, 1, 0, 1, 0, 0};
+    int i78[] = {0, 1, 0, 1, 0, 1};
+    int i79[] = {0, 1, 0, 1, 1, 0};
+    int i80[] = {0, 1, 0, 1, 1, 1};
+    int i81[] = {0, 1, 1, 0, 0, 0};
+    int i82[] = {0, 1, 1, 0, 0, 1};
+    int i83[] = {0, 1, 1, 0, 1, 0};
+    int i84[] = {0, 1, 1, 0, 1, 1};
+    int i85[] = {0, 1, 1, 1, 0, 0};
+    int i86[] = {0, 1, 1, 1, 0, 1};
+    int i87[] = {0, 1, 1, 1, 1, 0};
+    int i88[] = {0, 1, 1, 1, 1, 1};
+    int i89[] = {1, 0, 0, 0, 0, 0};
+    int i90[] = {1, 0, 0, 0, 0, 1};
+    int i91[] = {1, 0, 0, 0, 1, 0};
+    int i92[] = {1, 0, 0, 0, 1, 1};
+    int i93[] = {1, 0, 0, 1, 0, 0};
+    int i94[] = {1, 0, 0, 1, 0, 1};
+    int i95[] = {1, 0, 0, 1, 1, 0};
+    int i96[] = {1, 0, 0, 1, 1, 1};
+    int i97[] = {1, 0, 1, 0, 0, 0};
+    int i98[] = {1, 0, 1, 0, 0, 1};
+    int i99[] = {1, 0, 1, 0, 1, 0};
+    int i100[] = {1, 0, 1, 0, 1, 1};
+    int i101[] = {1, 0, 1, 1, 0, 0};
+    int i102[] = {1, 0, 1, 1, 0, 1};
+    int i103[] = {1, 0, 1, 1, 1, 0};
+    int i104[] = {1, 0, 1, 1, 1, 1};
+    int i105[] = {1, 1, 0, 0, 0, 0};
+    int i106[] = {1, 1, 0, 0, 0, 1};
+    int i107[] = {1, 1, 0, 0, 1, 0};
+    int i108[] = {1, 1, 0, 0, 1, 1};
+    int i109[] = {1, 1, 0, 1, 0, 0};
+    int i110[] = {1, 1, 0, 1, 0, 1};
+    int i111[] = {1, 1, 0, 1, 1, 0};
+    int i112[] = {1, 1, 0, 1, 1, 1};
+    int i113[] = {1, 1, 1, 0, 0, 0};
+    int i114[] = {1, 1, 1, 0, 0, 1};
+    int i115[] = {1, 1, 1, 0, 1, 0};
+    int i116[] = {1, 1, 1, 0, 1, 1};
+    int i117[] = {1, 1, 1, 1, 0, 0};
+    int i118[] = {1, 1, 1, 1, 0, 1};
+    int i119[] = {1, 1, 1, 1, 1, 0};
+    assert(std::is_heap(i57, i57+6) == (std::is_heap_until(i57, i57+6) == i57+6));
+    assert(std::is_heap(i58, i58+6) == (std::is_heap_until(i58, i58+6) == i58+6));
+    assert(std::is_heap(i59, i59+6) == (std::is_heap_until(i59, i59+6) == i59+6));
+    assert(std::is_heap(i60, i60+6) == (std::is_heap_until(i60, i60+6) == i60+6));
+    assert(std::is_heap(i61, i61+6) == (std::is_heap_until(i61, i61+6) == i61+6));
+    assert(std::is_heap(i62, i62+6) == (std::is_heap_until(i62, i62+6) == i62+6));
+    assert(std::is_heap(i63, i63+6) == (std::is_heap_until(i63, i63+6) == i63+6));
+    assert(std::is_heap(i64, i64+6) == (std::is_heap_until(i64, i64+6) == i64+6));
+    assert(std::is_heap(i65, i65+6) == (std::is_heap_until(i65, i65+6) == i65+6));
+    assert(std::is_heap(i66, i66+6) == (std::is_heap_until(i66, i66+6) == i66+6));
+    assert(std::is_heap(i67, i67+6) == (std::is_heap_until(i67, i67+6) == i67+6));
+    assert(std::is_heap(i68, i68+6) == (std::is_heap_until(i68, i68+6) == i68+6));
+    assert(std::is_heap(i69, i69+6) == (std::is_heap_until(i69, i69+6) == i69+6));
+    assert(std::is_heap(i70, i70+6) == (std::is_heap_until(i70, i70+6) == i70+6));
+    assert(std::is_heap(i71, i71+6) == (std::is_heap_until(i71, i71+6) == i71+6));
+    assert(std::is_heap(i72, i72+6) == (std::is_heap_until(i72, i72+6) == i72+6));
+    assert(std::is_heap(i73, i73+6) == (std::is_heap_until(i73, i73+6) == i73+6));
+    assert(std::is_heap(i74, i74+6) == (std::is_heap_until(i74, i74+6) == i74+6));
+    assert(std::is_heap(i75, i75+6) == (std::is_heap_until(i75, i75+6) == i75+6));
+    assert(std::is_heap(i76, i76+6) == (std::is_heap_until(i76, i76+6) == i76+6));
+    assert(std::is_heap(i77, i77+6) == (std::is_heap_until(i77, i77+6) == i77+6));
+    assert(std::is_heap(i78, i78+6) == (std::is_heap_until(i78, i78+6) == i78+6));
+    assert(std::is_heap(i79, i79+6) == (std::is_heap_until(i79, i79+6) == i79+6));
+    assert(std::is_heap(i80, i80+6) == (std::is_heap_until(i80, i80+6) == i80+6));
+    assert(std::is_heap(i81, i81+6) == (std::is_heap_until(i81, i81+6) == i81+6));
+    assert(std::is_heap(i82, i82+6) == (std::is_heap_until(i82, i82+6) == i82+6));
+    assert(std::is_heap(i83, i83+6) == (std::is_heap_until(i83, i83+6) == i83+6));
+    assert(std::is_heap(i84, i84+6) == (std::is_heap_until(i84, i84+6) == i84+6));
+    assert(std::is_heap(i85, i85+6) == (std::is_heap_until(i85, i85+6) == i85+6));
+    assert(std::is_heap(i86, i86+6) == (std::is_heap_until(i86, i86+6) == i86+6));
+    assert(std::is_heap(i87, i87+6) == (std::is_heap_until(i87, i87+6) == i87+6));
+    assert(std::is_heap(i88, i88+6) == (std::is_heap_until(i88, i88+6) == i88+6));
+    assert(std::is_heap(i89, i89+6) == (std::is_heap_until(i89, i89+6) == i89+6));
+    assert(std::is_heap(i90, i90+6) == (std::is_heap_until(i90, i90+6) == i90+6));
+    assert(std::is_heap(i91, i91+6) == (std::is_heap_until(i91, i91+6) == i91+6));
+    assert(std::is_heap(i92, i92+6) == (std::is_heap_until(i92, i92+6) == i92+6));
+    assert(std::is_heap(i93, i93+6) == (std::is_heap_until(i93, i93+6) == i93+6));
+    assert(std::is_heap(i94, i94+6) == (std::is_heap_until(i94, i94+6) == i94+6));
+    assert(std::is_heap(i95, i95+6) == (std::is_heap_until(i95, i95+6) == i95+6));
+    assert(std::is_heap(i96, i96+6) == (std::is_heap_until(i96, i96+6) == i96+6));
+    assert(std::is_heap(i97, i97+6) == (std::is_heap_until(i97, i97+6) == i97+6));
+    assert(std::is_heap(i98, i98+6) == (std::is_heap_until(i98, i98+6) == i98+6));
+    assert(std::is_heap(i99, i99+6) == (std::is_heap_until(i99, i99+6) == i99+6));
+    assert(std::is_heap(i100, i100+6) == (std::is_heap_until(i100, i100+6) == i100+6));
+    assert(std::is_heap(i101, i101+6) == (std::is_heap_until(i101, i101+6) == i101+6));
+    assert(std::is_heap(i102, i102+6) == (std::is_heap_until(i102, i102+6) == i102+6));
+    assert(std::is_heap(i103, i103+6) == (std::is_heap_until(i103, i103+6) == i103+6));
+    assert(std::is_heap(i104, i104+6) == (std::is_heap_until(i104, i104+6) == i104+6));
+    assert(std::is_heap(i105, i105+6) == (std::is_heap_until(i105, i105+6) == i105+6));
+    assert(std::is_heap(i106, i106+6) == (std::is_heap_until(i106, i106+6) == i106+6));
+    assert(std::is_heap(i107, i107+6) == (std::is_heap_until(i107, i107+6) == i107+6));
+    assert(std::is_heap(i108, i108+6) == (std::is_heap_until(i108, i108+6) == i108+6));
+    assert(std::is_heap(i109, i109+6) == (std::is_heap_until(i109, i109+6) == i109+6));
+    assert(std::is_heap(i110, i110+6) == (std::is_heap_until(i110, i110+6) == i110+6));
+    assert(std::is_heap(i111, i111+6) == (std::is_heap_until(i111, i111+6) == i111+6));
+    assert(std::is_heap(i112, i112+6) == (std::is_heap_until(i112, i112+6) == i112+6));
+    assert(std::is_heap(i113, i113+6) == (std::is_heap_until(i113, i113+6) == i113+6));
+    assert(std::is_heap(i114, i114+6) == (std::is_heap_until(i114, i114+6) == i114+6));
+    assert(std::is_heap(i115, i115+6) == (std::is_heap_until(i115, i115+6) == i115+6));
+    assert(std::is_heap(i116, i116+6) == (std::is_heap_until(i116, i116+6) == i116+6));
+    assert(std::is_heap(i117, i117+6) == (std::is_heap_until(i117, i117+6) == i117+6));
+    assert(std::is_heap(i118, i118+6) == (std::is_heap_until(i118, i118+6) == i118+6));
+    assert(std::is_heap(i119, i119+6) == (std::is_heap_until(i119, i119+6) == i119+6));
+    int i120[] = {0, 0, 0, 0, 0, 0, 0};
+    int i121[] = {0, 0, 0, 0, 0, 0, 1};
+    int i122[] = {0, 0, 0, 0, 0, 1, 0};
+    int i123[] = {0, 0, 0, 0, 0, 1, 1};
+    int i124[] = {0, 0, 0, 0, 1, 0, 0};
+    int i125[] = {0, 0, 0, 0, 1, 0, 1};
+    int i126[] = {0, 0, 0, 0, 1, 1, 0};
+    int i127[] = {0, 0, 0, 0, 1, 1, 1};
+    int i128[] = {0, 0, 0, 1, 0, 0, 0};
+    int i129[] = {0, 0, 0, 1, 0, 0, 1};
+    int i130[] = {0, 0, 0, 1, 0, 1, 0};
+    int i131[] = {0, 0, 0, 1, 0, 1, 1};
+    int i132[] = {0, 0, 0, 1, 1, 0, 0};
+    int i133[] = {0, 0, 0, 1, 1, 0, 1};
+    int i134[] = {0, 0, 0, 1, 1, 1, 0};
+    int i135[] = {0, 0, 0, 1, 1, 1, 1};
+    int i136[] = {0, 0, 1, 0, 0, 0, 0};
+    int i137[] = {0, 0, 1, 0, 0, 0, 1};
+    int i138[] = {0, 0, 1, 0, 0, 1, 0};
+    int i139[] = {0, 0, 1, 0, 0, 1, 1};
+    int i140[] = {0, 0, 1, 0, 1, 0, 0};
+    int i141[] = {0, 0, 1, 0, 1, 0, 1};
+    int i142[] = {0, 0, 1, 0, 1, 1, 0};
+    int i143[] = {0, 0, 1, 0, 1, 1, 1};
+    int i144[] = {0, 0, 1, 1, 0, 0, 0};
+    int i145[] = {0, 0, 1, 1, 0, 0, 1};
+    int i146[] = {0, 0, 1, 1, 0, 1, 0};
+    int i147[] = {0, 0, 1, 1, 0, 1, 1};
+    int i148[] = {0, 0, 1, 1, 1, 0, 0};
+    int i149[] = {0, 0, 1, 1, 1, 0, 1};
+    int i150[] = {0, 0, 1, 1, 1, 1, 0};
+    int i151[] = {0, 0, 1, 1, 1, 1, 1};
+    int i152[] = {0, 1, 0, 0, 0, 0, 0};
+    int i153[] = {0, 1, 0, 0, 0, 0, 1};
+    int i154[] = {0, 1, 0, 0, 0, 1, 0};
+    int i155[] = {0, 1, 0, 0, 0, 1, 1};
+    int i156[] = {0, 1, 0, 0, 1, 0, 0};
+    int i157[] = {0, 1, 0, 0, 1, 0, 1};
+    int i158[] = {0, 1, 0, 0, 1, 1, 0};
+    int i159[] = {0, 1, 0, 0, 1, 1, 1};
+    int i160[] = {0, 1, 0, 1, 0, 0, 0};
+    int i161[] = {0, 1, 0, 1, 0, 0, 1};
+    int i162[] = {0, 1, 0, 1, 0, 1, 0};
+    int i163[] = {0, 1, 0, 1, 0, 1, 1};
+    int i164[] = {0, 1, 0, 1, 1, 0, 0};
+    int i165[] = {0, 1, 0, 1, 1, 0, 1};
+    int i166[] = {0, 1, 0, 1, 1, 1, 0};
+    int i167[] = {0, 1, 0, 1, 1, 1, 1};
+    int i168[] = {0, 1, 1, 0, 0, 0, 0};
+    int i169[] = {0, 1, 1, 0, 0, 0, 1};
+    int i170[] = {0, 1, 1, 0, 0, 1, 0};
+    int i171[] = {0, 1, 1, 0, 0, 1, 1};
+    int i172[] = {0, 1, 1, 0, 1, 0, 0};
+    int i173[] = {0, 1, 1, 0, 1, 0, 1};
+    int i174[] = {0, 1, 1, 0, 1, 1, 0};
+    int i175[] = {0, 1, 1, 0, 1, 1, 1};
+    int i176[] = {0, 1, 1, 1, 0, 0, 0};
+    int i177[] = {0, 1, 1, 1, 0, 0, 1};
+    int i178[] = {0, 1, 1, 1, 0, 1, 0};
+    int i179[] = {0, 1, 1, 1, 0, 1, 1};
+    int i180[] = {0, 1, 1, 1, 1, 0, 0};
+    int i181[] = {0, 1, 1, 1, 1, 0, 1};
+    int i182[] = {0, 1, 1, 1, 1, 1, 0};
+    int i183[] = {0, 1, 1, 1, 1, 1, 1};
+    int i184[] = {1, 0, 0, 0, 0, 0, 0};
+    int i185[] = {1, 0, 0, 0, 0, 0, 1};
+    int i186[] = {1, 0, 0, 0, 0, 1, 0};
+    int i187[] = {1, 0, 0, 0, 0, 1, 1};
+    int i188[] = {1, 0, 0, 0, 1, 0, 0};
+    int i189[] = {1, 0, 0, 0, 1, 0, 1};
+    int i190[] = {1, 0, 0, 0, 1, 1, 0};
+    int i191[] = {1, 0, 0, 0, 1, 1, 1};
+    int i192[] = {1, 0, 0, 1, 0, 0, 0};
+    int i193[] = {1, 0, 0, 1, 0, 0, 1};
+    int i194[] = {1, 0, 0, 1, 0, 1, 0};
+    int i195[] = {1, 0, 0, 1, 0, 1, 1};
+    int i196[] = {1, 0, 0, 1, 1, 0, 0};
+    int i197[] = {1, 0, 0, 1, 1, 0, 1};
+    int i198[] = {1, 0, 0, 1, 1, 1, 0};
+    int i199[] = {1, 0, 0, 1, 1, 1, 1};
+    int i200[] = {1, 0, 1, 0, 0, 0, 0};
+    int i201[] = {1, 0, 1, 0, 0, 0, 1};
+    int i202[] = {1, 0, 1, 0, 0, 1, 0};
+    int i203[] = {1, 0, 1, 0, 0, 1, 1};
+    int i204[] = {1, 0, 1, 0, 1, 0, 0};
+    int i205[] = {1, 0, 1, 0, 1, 0, 1};
+    int i206[] = {1, 0, 1, 0, 1, 1, 0};
+    int i207[] = {1, 0, 1, 0, 1, 1, 1};
+    int i208[] = {1, 0, 1, 1, 0, 0, 0};
+    int i209[] = {1, 0, 1, 1, 0, 0, 1};
+    int i210[] = {1, 0, 1, 1, 0, 1, 0};
+    int i211[] = {1, 0, 1, 1, 0, 1, 1};
+    int i212[] = {1, 0, 1, 1, 1, 0, 0};
+    int i213[] = {1, 0, 1, 1, 1, 0, 1};
+    int i214[] = {1, 0, 1, 1, 1, 1, 0};
+    int i215[] = {1, 0, 1, 1, 1, 1, 1};
+    int i216[] = {1, 1, 0, 0, 0, 0, 0};
+    int i217[] = {1, 1, 0, 0, 0, 0, 1};
+    int i218[] = {1, 1, 0, 0, 0, 1, 0};
+    int i219[] = {1, 1, 0, 0, 0, 1, 1};
+    int i220[] = {1, 1, 0, 0, 1, 0, 0};
+    int i221[] = {1, 1, 0, 0, 1, 0, 1};
+    int i222[] = {1, 1, 0, 0, 1, 1, 0};
+    int i223[] = {1, 1, 0, 0, 1, 1, 1};
+    int i224[] = {1, 1, 0, 1, 0, 0, 0};
+    int i225[] = {1, 1, 0, 1, 0, 0, 1};
+    int i226[] = {1, 1, 0, 1, 0, 1, 0};
+    int i227[] = {1, 1, 0, 1, 0, 1, 1};
+    int i228[] = {1, 1, 0, 1, 1, 0, 0};
+    int i229[] = {1, 1, 0, 1, 1, 0, 1};
+    int i230[] = {1, 1, 0, 1, 1, 1, 0};
+    int i231[] = {1, 1, 0, 1, 1, 1, 1};
+    int i232[] = {1, 1, 1, 0, 0, 0, 0};
+    int i233[] = {1, 1, 1, 0, 0, 0, 1};
+    int i234[] = {1, 1, 1, 0, 0, 1, 0};
+    int i235[] = {1, 1, 1, 0, 0, 1, 1};
+    int i236[] = {1, 1, 1, 0, 1, 0, 0};
+    int i237[] = {1, 1, 1, 0, 1, 0, 1};
+    int i238[] = {1, 1, 1, 0, 1, 1, 0};
+    int i239[] = {1, 1, 1, 0, 1, 1, 1};
+    int i240[] = {1, 1, 1, 1, 0, 0, 0};
+    int i241[] = {1, 1, 1, 1, 0, 0, 1};
+    int i242[] = {1, 1, 1, 1, 0, 1, 0};
+    int i243[] = {1, 1, 1, 1, 0, 1, 1};
+    int i244[] = {1, 1, 1, 1, 1, 0, 0};
+    int i245[] = {1, 1, 1, 1, 1, 0, 1};
+    int i246[] = {1, 1, 1, 1, 1, 1, 0};
+    assert(std::is_heap(i120, i120+7) == (std::is_heap_until(i120, i120+7) == i120+7));
+    assert(std::is_heap(i121, i121+7) == (std::is_heap_until(i121, i121+7) == i121+7));
+    assert(std::is_heap(i122, i122+7) == (std::is_heap_until(i122, i122+7) == i122+7));
+    assert(std::is_heap(i123, i123+7) == (std::is_heap_until(i123, i123+7) == i123+7));
+    assert(std::is_heap(i124, i124+7) == (std::is_heap_until(i124, i124+7) == i124+7));
+    assert(std::is_heap(i125, i125+7) == (std::is_heap_until(i125, i125+7) == i125+7));
+    assert(std::is_heap(i126, i126+7) == (std::is_heap_until(i126, i126+7) == i126+7));
+    assert(std::is_heap(i127, i127+7) == (std::is_heap_until(i127, i127+7) == i127+7));
+    assert(std::is_heap(i128, i128+7) == (std::is_heap_until(i128, i128+7) == i128+7));
+    assert(std::is_heap(i129, i129+7) == (std::is_heap_until(i129, i129+7) == i129+7));
+    assert(std::is_heap(i130, i130+7) == (std::is_heap_until(i130, i130+7) == i130+7));
+    assert(std::is_heap(i131, i131+7) == (std::is_heap_until(i131, i131+7) == i131+7));
+    assert(std::is_heap(i132, i132+7) == (std::is_heap_until(i132, i132+7) == i132+7));
+    assert(std::is_heap(i133, i133+7) == (std::is_heap_until(i133, i133+7) == i133+7));
+    assert(std::is_heap(i134, i134+7) == (std::is_heap_until(i134, i134+7) == i134+7));
+    assert(std::is_heap(i135, i135+7) == (std::is_heap_until(i135, i135+7) == i135+7));
+    assert(std::is_heap(i136, i136+7) == (std::is_heap_until(i136, i136+7) == i136+7));
+    assert(std::is_heap(i137, i137+7) == (std::is_heap_until(i137, i137+7) == i137+7));
+    assert(std::is_heap(i138, i138+7) == (std::is_heap_until(i138, i138+7) == i138+7));
+    assert(std::is_heap(i139, i139+7) == (std::is_heap_until(i139, i139+7) == i139+7));
+    assert(std::is_heap(i140, i140+7) == (std::is_heap_until(i140, i140+7) == i140+7));
+    assert(std::is_heap(i141, i141+7) == (std::is_heap_until(i141, i141+7) == i141+7));
+    assert(std::is_heap(i142, i142+7) == (std::is_heap_until(i142, i142+7) == i142+7));
+    assert(std::is_heap(i143, i143+7) == (std::is_heap_until(i143, i143+7) == i143+7));
+    assert(std::is_heap(i144, i144+7) == (std::is_heap_until(i144, i144+7) == i144+7));
+    assert(std::is_heap(i145, i145+7) == (std::is_heap_until(i145, i145+7) == i145+7));
+    assert(std::is_heap(i146, i146+7) == (std::is_heap_until(i146, i146+7) == i146+7));
+    assert(std::is_heap(i147, i147+7) == (std::is_heap_until(i147, i147+7) == i147+7));
+    assert(std::is_heap(i148, i148+7) == (std::is_heap_until(i148, i148+7) == i148+7));
+    assert(std::is_heap(i149, i149+7) == (std::is_heap_until(i149, i149+7) == i149+7));
+    assert(std::is_heap(i150, i150+7) == (std::is_heap_until(i150, i150+7) == i150+7));
+    assert(std::is_heap(i151, i151+7) == (std::is_heap_until(i151, i151+7) == i151+7));
+    assert(std::is_heap(i152, i152+7) == (std::is_heap_until(i152, i152+7) == i152+7));
+    assert(std::is_heap(i153, i153+7) == (std::is_heap_until(i153, i153+7) == i153+7));
+    assert(std::is_heap(i154, i154+7) == (std::is_heap_until(i154, i154+7) == i154+7));
+    assert(std::is_heap(i155, i155+7) == (std::is_heap_until(i155, i155+7) == i155+7));
+    assert(std::is_heap(i156, i156+7) == (std::is_heap_until(i156, i156+7) == i156+7));
+    assert(std::is_heap(i157, i157+7) == (std::is_heap_until(i157, i157+7) == i157+7));
+    assert(std::is_heap(i158, i158+7) == (std::is_heap_until(i158, i158+7) == i158+7));
+    assert(std::is_heap(i159, i159+7) == (std::is_heap_until(i159, i159+7) == i159+7));
+    assert(std::is_heap(i160, i160+7) == (std::is_heap_until(i160, i160+7) == i160+7));
+    assert(std::is_heap(i161, i161+7) == (std::is_heap_until(i161, i161+7) == i161+7));
+    assert(std::is_heap(i162, i162+7) == (std::is_heap_until(i162, i162+7) == i162+7));
+    assert(std::is_heap(i163, i163+7) == (std::is_heap_until(i163, i163+7) == i163+7));
+    assert(std::is_heap(i164, i164+7) == (std::is_heap_until(i164, i164+7) == i164+7));
+    assert(std::is_heap(i165, i165+7) == (std::is_heap_until(i165, i165+7) == i165+7));
+    assert(std::is_heap(i166, i166+7) == (std::is_heap_until(i166, i166+7) == i166+7));
+    assert(std::is_heap(i167, i167+7) == (std::is_heap_until(i167, i167+7) == i167+7));
+    assert(std::is_heap(i168, i168+7) == (std::is_heap_until(i168, i168+7) == i168+7));
+    assert(std::is_heap(i169, i169+7) == (std::is_heap_until(i169, i169+7) == i169+7));
+    assert(std::is_heap(i170, i170+7) == (std::is_heap_until(i170, i170+7) == i170+7));
+    assert(std::is_heap(i171, i171+7) == (std::is_heap_until(i171, i171+7) == i171+7));
+    assert(std::is_heap(i172, i172+7) == (std::is_heap_until(i172, i172+7) == i172+7));
+    assert(std::is_heap(i173, i173+7) == (std::is_heap_until(i173, i173+7) == i173+7));
+    assert(std::is_heap(i174, i174+7) == (std::is_heap_until(i174, i174+7) == i174+7));
+    assert(std::is_heap(i175, i175+7) == (std::is_heap_until(i175, i175+7) == i175+7));
+    assert(std::is_heap(i176, i176+7) == (std::is_heap_until(i176, i176+7) == i176+7));
+    assert(std::is_heap(i177, i177+7) == (std::is_heap_until(i177, i177+7) == i177+7));
+    assert(std::is_heap(i178, i178+7) == (std::is_heap_until(i178, i178+7) == i178+7));
+    assert(std::is_heap(i179, i179+7) == (std::is_heap_until(i179, i179+7) == i179+7));
+    assert(std::is_heap(i180, i180+7) == (std::is_heap_until(i180, i180+7) == i180+7));
+    assert(std::is_heap(i181, i181+7) == (std::is_heap_until(i181, i181+7) == i181+7));
+    assert(std::is_heap(i182, i182+7) == (std::is_heap_until(i182, i182+7) == i182+7));
+    assert(std::is_heap(i183, i183+7) == (std::is_heap_until(i183, i183+7) == i183+7));
+    assert(std::is_heap(i184, i184+7) == (std::is_heap_until(i184, i184+7) == i184+7));
+    assert(std::is_heap(i185, i185+7) == (std::is_heap_until(i185, i185+7) == i185+7));
+    assert(std::is_heap(i186, i186+7) == (std::is_heap_until(i186, i186+7) == i186+7));
+    assert(std::is_heap(i187, i187+7) == (std::is_heap_until(i187, i187+7) == i187+7));
+    assert(std::is_heap(i188, i188+7) == (std::is_heap_until(i188, i188+7) == i188+7));
+    assert(std::is_heap(i189, i189+7) == (std::is_heap_until(i189, i189+7) == i189+7));
+    assert(std::is_heap(i190, i190+7) == (std::is_heap_until(i190, i190+7) == i190+7));
+    assert(std::is_heap(i191, i191+7) == (std::is_heap_until(i191, i191+7) == i191+7));
+    assert(std::is_heap(i192, i192+7) == (std::is_heap_until(i192, i192+7) == i192+7));
+    assert(std::is_heap(i193, i193+7) == (std::is_heap_until(i193, i193+7) == i193+7));
+    assert(std::is_heap(i194, i194+7) == (std::is_heap_until(i194, i194+7) == i194+7));
+    assert(std::is_heap(i195, i195+7) == (std::is_heap_until(i195, i195+7) == i195+7));
+    assert(std::is_heap(i196, i196+7) == (std::is_heap_until(i196, i196+7) == i196+7));
+    assert(std::is_heap(i197, i197+7) == (std::is_heap_until(i197, i197+7) == i197+7));
+    assert(std::is_heap(i198, i198+7) == (std::is_heap_until(i198, i198+7) == i198+7));
+    assert(std::is_heap(i199, i199+7) == (std::is_heap_until(i199, i199+7) == i199+7));
+    assert(std::is_heap(i200, i200+7) == (std::is_heap_until(i200, i200+7) == i200+7));
+    assert(std::is_heap(i201, i201+7) == (std::is_heap_until(i201, i201+7) == i201+7));
+    assert(std::is_heap(i202, i202+7) == (std::is_heap_until(i202, i202+7) == i202+7));
+    assert(std::is_heap(i203, i203+7) == (std::is_heap_until(i203, i203+7) == i203+7));
+    assert(std::is_heap(i204, i204+7) == (std::is_heap_until(i204, i204+7) == i204+7));
+    assert(std::is_heap(i205, i205+7) == (std::is_heap_until(i205, i205+7) == i205+7));
+    assert(std::is_heap(i206, i206+7) == (std::is_heap_until(i206, i206+7) == i206+7));
+    assert(std::is_heap(i207, i207+7) == (std::is_heap_until(i207, i207+7) == i207+7));
+    assert(std::is_heap(i208, i208+7) == (std::is_heap_until(i208, i208+7) == i208+7));
+    assert(std::is_heap(i209, i209+7) == (std::is_heap_until(i209, i209+7) == i209+7));
+    assert(std::is_heap(i210, i210+7) == (std::is_heap_until(i210, i210+7) == i210+7));
+    assert(std::is_heap(i211, i211+7) == (std::is_heap_until(i211, i211+7) == i211+7));
+    assert(std::is_heap(i212, i212+7) == (std::is_heap_until(i212, i212+7) == i212+7));
+    assert(std::is_heap(i213, i213+7) == (std::is_heap_until(i213, i213+7) == i213+7));
+    assert(std::is_heap(i214, i214+7) == (std::is_heap_until(i214, i214+7) == i214+7));
+    assert(std::is_heap(i215, i215+7) == (std::is_heap_until(i215, i215+7) == i215+7));
+    assert(std::is_heap(i216, i216+7) == (std::is_heap_until(i216, i216+7) == i216+7));
+    assert(std::is_heap(i217, i217+7) == (std::is_heap_until(i217, i217+7) == i217+7));
+    assert(std::is_heap(i218, i218+7) == (std::is_heap_until(i218, i218+7) == i218+7));
+    assert(std::is_heap(i219, i219+7) == (std::is_heap_until(i219, i219+7) == i219+7));
+    assert(std::is_heap(i220, i220+7) == (std::is_heap_until(i220, i220+7) == i220+7));
+    assert(std::is_heap(i221, i221+7) == (std::is_heap_until(i221, i221+7) == i221+7));
+    assert(std::is_heap(i222, i222+7) == (std::is_heap_until(i222, i222+7) == i222+7));
+    assert(std::is_heap(i223, i223+7) == (std::is_heap_until(i223, i223+7) == i223+7));
+    assert(std::is_heap(i224, i224+7) == (std::is_heap_until(i224, i224+7) == i224+7));
+    assert(std::is_heap(i225, i225+7) == (std::is_heap_until(i225, i225+7) == i225+7));
+    assert(std::is_heap(i226, i226+7) == (std::is_heap_until(i226, i226+7) == i226+7));
+    assert(std::is_heap(i227, i227+7) == (std::is_heap_until(i227, i227+7) == i227+7));
+    assert(std::is_heap(i228, i228+7) == (std::is_heap_until(i228, i228+7) == i228+7));
+    assert(std::is_heap(i229, i229+7) == (std::is_heap_until(i229, i229+7) == i229+7));
+    assert(std::is_heap(i230, i230+7) == (std::is_heap_until(i230, i230+7) == i230+7));
+    assert(std::is_heap(i231, i231+7) == (std::is_heap_until(i231, i231+7) == i231+7));
+    assert(std::is_heap(i232, i232+7) == (std::is_heap_until(i232, i232+7) == i232+7));
+    assert(std::is_heap(i233, i233+7) == (std::is_heap_until(i233, i233+7) == i233+7));
+    assert(std::is_heap(i234, i234+7) == (std::is_heap_until(i234, i234+7) == i234+7));
+    assert(std::is_heap(i235, i235+7) == (std::is_heap_until(i235, i235+7) == i235+7));
+    assert(std::is_heap(i236, i236+7) == (std::is_heap_until(i236, i236+7) == i236+7));
+    assert(std::is_heap(i237, i237+7) == (std::is_heap_until(i237, i237+7) == i237+7));
+    assert(std::is_heap(i238, i238+7) == (std::is_heap_until(i238, i238+7) == i238+7));
+    assert(std::is_heap(i239, i239+7) == (std::is_heap_until(i239, i239+7) == i239+7));
+    assert(std::is_heap(i240, i240+7) == (std::is_heap_until(i240, i240+7) == i240+7));
+    assert(std::is_heap(i241, i241+7) == (std::is_heap_until(i241, i241+7) == i241+7));
+    assert(std::is_heap(i242, i242+7) == (std::is_heap_until(i242, i242+7) == i242+7));
+    assert(std::is_heap(i243, i243+7) == (std::is_heap_until(i243, i243+7) == i243+7));
+    assert(std::is_heap(i244, i244+7) == (std::is_heap_until(i244, i244+7) == i244+7));
+    assert(std::is_heap(i245, i245+7) == (std::is_heap_until(i245, i245+7) == i245+7));
+    assert(std::is_heap(i246, i246+7) == (std::is_heap_until(i246, i246+7) == i246+7));
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_comp.pass.cpp
new file mode 100644
index 0000000..b07a3c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_comp.pass.cpp
@@ -0,0 +1,543 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   constexpr bool   // constexpr after C++17
+//   is_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 0, 1, 1, 1};
+    int ib[] = {1, 0, 4, 1, 0};
+    return     std::is_heap(std::begin(ia), std::end(ia), std::greater<int>())
+           && !std::is_heap(std::begin(ib), std::end(ib), std::greater<int>());
+    }
+#endif
+
+void test()
+{
+    typedef random_access_iterator<int *> RI;
+    int i1[] = {0, 0};
+    assert(std::is_heap(i1, i1, std::greater<int>()));
+    assert(std::is_heap(i1, i1+1, std::greater<int>()) == (std::is_heap_until(i1, i1+1, std::greater<int>()) == i1+1));
+    assert(std::is_heap(RI(i1), RI(i1), std::greater<int>()));
+    assert(std::is_heap(RI(i1), RI(i1+1), std::greater<int>()) == (std::is_heap_until(RI(i1), RI(i1+1), std::greater<int>()) == RI(i1+1)));
+
+    int i2[] = {0, 1};
+    int i3[] = {1, 0};
+    assert(std::is_heap(i1, i1+2, std::greater<int>()) == (std::is_heap_until(i1, i1+2, std::greater<int>()) == i1+2));
+    assert(std::is_heap(i2, i2+2, std::greater<int>()) == (std::is_heap_until(i2, i2+2, std::greater<int>()) == i2+2));
+    assert(std::is_heap(i3, i3+2, std::greater<int>()) == (std::is_heap_until(i3, i3+2, std::greater<int>()) == i3+2));
+    int i4[] = {0, 0, 0};
+    int i5[] = {0, 0, 1};
+    int i6[] = {0, 1, 0};
+    int i7[] = {0, 1, 1};
+    int i8[] = {1, 0, 0};
+    int i9[] = {1, 0, 1};
+    int i10[] = {1, 1, 0};
+    assert(std::is_heap(i4, i4+3, std::greater<int>()) == (std::is_heap_until(i4, i4+3, std::greater<int>()) == i4+3));
+    assert(std::is_heap(i5, i5+3, std::greater<int>()) == (std::is_heap_until(i5, i5+3, std::greater<int>()) == i5+3));
+    assert(std::is_heap(i6, i6+3, std::greater<int>()) == (std::is_heap_until(i6, i6+3, std::greater<int>()) == i6+3));
+    assert(std::is_heap(i7, i7+3, std::greater<int>()) == (std::is_heap_until(i7, i7+3, std::greater<int>()) == i7+3));
+    assert(std::is_heap(i8, i8+3, std::greater<int>()) == (std::is_heap_until(i8, i8+3, std::greater<int>()) == i8+3));
+    assert(std::is_heap(i9, i9+3, std::greater<int>()) == (std::is_heap_until(i9, i9+3, std::greater<int>()) == i9+3));
+    assert(std::is_heap(i10, i10+3, std::greater<int>()) == (std::is_heap_until(i10, i10+3, std::greater<int>()) == i10+3));
+    int i11[] = {0, 0, 0, 0};
+    int i12[] = {0, 0, 0, 1};
+    int i13[] = {0, 0, 1, 0};
+    int i14[] = {0, 0, 1, 1};
+    int i15[] = {0, 1, 0, 0};
+    int i16[] = {0, 1, 0, 1};
+    int i17[] = {0, 1, 1, 0};
+    int i18[] = {0, 1, 1, 1};
+    int i19[] = {1, 0, 0, 0};
+    int i20[] = {1, 0, 0, 1};
+    int i21[] = {1, 0, 1, 0};
+    int i22[] = {1, 0, 1, 1};
+    int i23[] = {1, 1, 0, 0};
+    int i24[] = {1, 1, 0, 1};
+    int i25[] = {1, 1, 1, 0};
+    assert(std::is_heap(i11, i11+4, std::greater<int>()) == (std::is_heap_until(i11, i11+4, std::greater<int>()) == i11+4));
+    assert(std::is_heap(i12, i12+4, std::greater<int>()) == (std::is_heap_until(i12, i12+4, std::greater<int>()) == i12+4));
+    assert(std::is_heap(i13, i13+4, std::greater<int>()) == (std::is_heap_until(i13, i13+4, std::greater<int>()) == i13+4));
+    assert(std::is_heap(i14, i14+4, std::greater<int>()) == (std::is_heap_until(i14, i14+4, std::greater<int>()) == i14+4));
+    assert(std::is_heap(i15, i15+4, std::greater<int>()) == (std::is_heap_until(i15, i15+4, std::greater<int>()) == i15+4));
+    assert(std::is_heap(i16, i16+4, std::greater<int>()) == (std::is_heap_until(i16, i16+4, std::greater<int>()) == i16+4));
+    assert(std::is_heap(i17, i17+4, std::greater<int>()) == (std::is_heap_until(i17, i17+4, std::greater<int>()) == i17+4));
+    assert(std::is_heap(i18, i18+4, std::greater<int>()) == (std::is_heap_until(i18, i18+4, std::greater<int>()) == i18+4));
+    assert(std::is_heap(i19, i19+4, std::greater<int>()) == (std::is_heap_until(i19, i19+4, std::greater<int>()) == i19+4));
+    assert(std::is_heap(i20, i20+4, std::greater<int>()) == (std::is_heap_until(i20, i20+4, std::greater<int>()) == i20+4));
+    assert(std::is_heap(i21, i21+4, std::greater<int>()) == (std::is_heap_until(i21, i21+4, std::greater<int>()) == i21+4));
+    assert(std::is_heap(i22, i22+4, std::greater<int>()) == (std::is_heap_until(i22, i22+4, std::greater<int>()) == i22+4));
+    assert(std::is_heap(i23, i23+4, std::greater<int>()) == (std::is_heap_until(i23, i23+4, std::greater<int>()) == i23+4));
+    assert(std::is_heap(i24, i24+4, std::greater<int>()) == (std::is_heap_until(i24, i24+4, std::greater<int>()) == i24+4));
+    assert(std::is_heap(i25, i25+4, std::greater<int>()) == (std::is_heap_until(i25, i25+4, std::greater<int>()) == i25+4));
+    int i26[] = {0, 0, 0, 0, 0};
+    int i27[] = {0, 0, 0, 0, 1};
+    int i28[] = {0, 0, 0, 1, 0};
+    int i29[] = {0, 0, 0, 1, 1};
+    int i30[] = {0, 0, 1, 0, 0};
+    int i31[] = {0, 0, 1, 0, 1};
+    int i32[] = {0, 0, 1, 1, 0};
+    int i33[] = {0, 0, 1, 1, 1};
+    int i34[] = {0, 1, 0, 0, 0};
+    int i35[] = {0, 1, 0, 0, 1};
+    int i36[] = {0, 1, 0, 1, 0};
+    int i37[] = {0, 1, 0, 1, 1};
+    int i38[] = {0, 1, 1, 0, 0};
+    int i39[] = {0, 1, 1, 0, 1};
+    int i40[] = {0, 1, 1, 1, 0};
+    int i41[] = {0, 1, 1, 1, 1};
+    int i42[] = {1, 0, 0, 0, 0};
+    int i43[] = {1, 0, 0, 0, 1};
+    int i44[] = {1, 0, 0, 1, 0};
+    int i45[] = {1, 0, 0, 1, 1};
+    int i46[] = {1, 0, 1, 0, 0};
+    int i47[] = {1, 0, 1, 0, 1};
+    int i48[] = {1, 0, 1, 1, 0};
+    int i49[] = {1, 0, 1, 1, 1};
+    int i50[] = {1, 1, 0, 0, 0};
+    int i51[] = {1, 1, 0, 0, 1};
+    int i52[] = {1, 1, 0, 1, 0};
+    int i53[] = {1, 1, 0, 1, 1};
+    int i54[] = {1, 1, 1, 0, 0};
+    int i55[] = {1, 1, 1, 0, 1};
+    int i56[] = {1, 1, 1, 1, 0};
+    assert(std::is_heap(i26, i26+5, std::greater<int>()) == (std::is_heap_until(i26, i26+5, std::greater<int>()) == i26+5));
+    assert(std::is_heap(i27, i27+5, std::greater<int>()) == (std::is_heap_until(i27, i27+5, std::greater<int>()) == i27+5));
+    assert(std::is_heap(i28, i28+5, std::greater<int>()) == (std::is_heap_until(i28, i28+5, std::greater<int>()) == i28+5));
+    assert(std::is_heap(i29, i29+5, std::greater<int>()) == (std::is_heap_until(i29, i29+5, std::greater<int>()) == i29+5));
+    assert(std::is_heap(i30, i30+5, std::greater<int>()) == (std::is_heap_until(i30, i30+5, std::greater<int>()) == i30+5));
+    assert(std::is_heap(i31, i31+5, std::greater<int>()) == (std::is_heap_until(i31, i31+5, std::greater<int>()) == i31+5));
+    assert(std::is_heap(i32, i32+5, std::greater<int>()) == (std::is_heap_until(i32, i32+5, std::greater<int>()) == i32+5));
+    assert(std::is_heap(i33, i33+5, std::greater<int>()) == (std::is_heap_until(i33, i33+5, std::greater<int>()) == i33+5));
+    assert(std::is_heap(i34, i34+5, std::greater<int>()) == (std::is_heap_until(i34, i34+5, std::greater<int>()) == i34+5));
+    assert(std::is_heap(i35, i35+5, std::greater<int>()) == (std::is_heap_until(i35, i35+5, std::greater<int>()) == i35+5));
+    assert(std::is_heap(i36, i36+5, std::greater<int>()) == (std::is_heap_until(i36, i36+5, std::greater<int>()) == i36+5));
+    assert(std::is_heap(i37, i37+5, std::greater<int>()) == (std::is_heap_until(i37, i37+5, std::greater<int>()) == i37+5));
+    assert(std::is_heap(i38, i38+5, std::greater<int>()) == (std::is_heap_until(i38, i38+5, std::greater<int>()) == i38+5));
+    assert(std::is_heap(i39, i39+5, std::greater<int>()) == (std::is_heap_until(i39, i39+5, std::greater<int>()) == i39+5));
+    assert(std::is_heap(i40, i40+5, std::greater<int>()) == (std::is_heap_until(i40, i40+5, std::greater<int>()) == i40+5));
+    assert(std::is_heap(i41, i41+5, std::greater<int>()) == (std::is_heap_until(i41, i41+5, std::greater<int>()) == i41+5));
+    assert(std::is_heap(i42, i42+5, std::greater<int>()) == (std::is_heap_until(i42, i42+5, std::greater<int>()) == i42+5));
+    assert(std::is_heap(i43, i43+5, std::greater<int>()) == (std::is_heap_until(i43, i43+5, std::greater<int>()) == i43+5));
+    assert(std::is_heap(i44, i44+5, std::greater<int>()) == (std::is_heap_until(i44, i44+5, std::greater<int>()) == i44+5));
+    assert(std::is_heap(i45, i45+5, std::greater<int>()) == (std::is_heap_until(i45, i45+5, std::greater<int>()) == i45+5));
+    assert(std::is_heap(i46, i46+5, std::greater<int>()) == (std::is_heap_until(i46, i46+5, std::greater<int>()) == i46+5));
+    assert(std::is_heap(i47, i47+5, std::greater<int>()) == (std::is_heap_until(i47, i47+5, std::greater<int>()) == i47+5));
+    assert(std::is_heap(i48, i48+5, std::greater<int>()) == (std::is_heap_until(i48, i48+5, std::greater<int>()) == i48+5));
+    assert(std::is_heap(i49, i49+5, std::greater<int>()) == (std::is_heap_until(i49, i49+5, std::greater<int>()) == i49+5));
+    assert(std::is_heap(i50, i50+5, std::greater<int>()) == (std::is_heap_until(i50, i50+5, std::greater<int>()) == i50+5));
+    assert(std::is_heap(i51, i51+5, std::greater<int>()) == (std::is_heap_until(i51, i51+5, std::greater<int>()) == i51+5));
+    assert(std::is_heap(i52, i52+5, std::greater<int>()) == (std::is_heap_until(i52, i52+5, std::greater<int>()) == i52+5));
+    assert(std::is_heap(i53, i53+5, std::greater<int>()) == (std::is_heap_until(i53, i53+5, std::greater<int>()) == i53+5));
+    assert(std::is_heap(i54, i54+5, std::greater<int>()) == (std::is_heap_until(i54, i54+5, std::greater<int>()) == i54+5));
+    assert(std::is_heap(i55, i55+5, std::greater<int>()) == (std::is_heap_until(i55, i55+5, std::greater<int>()) == i55+5));
+    assert(std::is_heap(i56, i56+5, std::greater<int>()) == (std::is_heap_until(i56, i56+5, std::greater<int>()) == i56+5));
+    int i57[] = {0, 0, 0, 0, 0, 0};
+    int i58[] = {0, 0, 0, 0, 0, 1};
+    int i59[] = {0, 0, 0, 0, 1, 0};
+    int i60[] = {0, 0, 0, 0, 1, 1};
+    int i61[] = {0, 0, 0, 1, 0, 0};
+    int i62[] = {0, 0, 0, 1, 0, 1};
+    int i63[] = {0, 0, 0, 1, 1, 0};
+    int i64[] = {0, 0, 0, 1, 1, 1};
+    int i65[] = {0, 0, 1, 0, 0, 0};
+    int i66[] = {0, 0, 1, 0, 0, 1};
+    int i67[] = {0, 0, 1, 0, 1, 0};
+    int i68[] = {0, 0, 1, 0, 1, 1};
+    int i69[] = {0, 0, 1, 1, 0, 0};
+    int i70[] = {0, 0, 1, 1, 0, 1};
+    int i71[] = {0, 0, 1, 1, 1, 0};
+    int i72[] = {0, 0, 1, 1, 1, 1};
+    int i73[] = {0, 1, 0, 0, 0, 0};
+    int i74[] = {0, 1, 0, 0, 0, 1};
+    int i75[] = {0, 1, 0, 0, 1, 0};
+    int i76[] = {0, 1, 0, 0, 1, 1};
+    int i77[] = {0, 1, 0, 1, 0, 0};
+    int i78[] = {0, 1, 0, 1, 0, 1};
+    int i79[] = {0, 1, 0, 1, 1, 0};
+    int i80[] = {0, 1, 0, 1, 1, 1};
+    int i81[] = {0, 1, 1, 0, 0, 0};
+    int i82[] = {0, 1, 1, 0, 0, 1};
+    int i83[] = {0, 1, 1, 0, 1, 0};
+    int i84[] = {0, 1, 1, 0, 1, 1};
+    int i85[] = {0, 1, 1, 1, 0, 0};
+    int i86[] = {0, 1, 1, 1, 0, 1};
+    int i87[] = {0, 1, 1, 1, 1, 0};
+    int i88[] = {0, 1, 1, 1, 1, 1};
+    int i89[] = {1, 0, 0, 0, 0, 0};
+    int i90[] = {1, 0, 0, 0, 0, 1};
+    int i91[] = {1, 0, 0, 0, 1, 0};
+    int i92[] = {1, 0, 0, 0, 1, 1};
+    int i93[] = {1, 0, 0, 1, 0, 0};
+    int i94[] = {1, 0, 0, 1, 0, 1};
+    int i95[] = {1, 0, 0, 1, 1, 0};
+    int i96[] = {1, 0, 0, 1, 1, 1};
+    int i97[] = {1, 0, 1, 0, 0, 0};
+    int i98[] = {1, 0, 1, 0, 0, 1};
+    int i99[] = {1, 0, 1, 0, 1, 0};
+    int i100[] = {1, 0, 1, 0, 1, 1};
+    int i101[] = {1, 0, 1, 1, 0, 0};
+    int i102[] = {1, 0, 1, 1, 0, 1};
+    int i103[] = {1, 0, 1, 1, 1, 0};
+    int i104[] = {1, 0, 1, 1, 1, 1};
+    int i105[] = {1, 1, 0, 0, 0, 0};
+    int i106[] = {1, 1, 0, 0, 0, 1};
+    int i107[] = {1, 1, 0, 0, 1, 0};
+    int i108[] = {1, 1, 0, 0, 1, 1};
+    int i109[] = {1, 1, 0, 1, 0, 0};
+    int i110[] = {1, 1, 0, 1, 0, 1};
+    int i111[] = {1, 1, 0, 1, 1, 0};
+    int i112[] = {1, 1, 0, 1, 1, 1};
+    int i113[] = {1, 1, 1, 0, 0, 0};
+    int i114[] = {1, 1, 1, 0, 0, 1};
+    int i115[] = {1, 1, 1, 0, 1, 0};
+    int i116[] = {1, 1, 1, 0, 1, 1};
+    int i117[] = {1, 1, 1, 1, 0, 0};
+    int i118[] = {1, 1, 1, 1, 0, 1};
+    int i119[] = {1, 1, 1, 1, 1, 0};
+    assert(std::is_heap(i57, i57+6, std::greater<int>()) == (std::is_heap_until(i57, i57+6, std::greater<int>()) == i57+6));
+    assert(std::is_heap(i58, i58+6, std::greater<int>()) == (std::is_heap_until(i58, i58+6, std::greater<int>()) == i58+6));
+    assert(std::is_heap(i59, i59+6, std::greater<int>()) == (std::is_heap_until(i59, i59+6, std::greater<int>()) == i59+6));
+    assert(std::is_heap(i60, i60+6, std::greater<int>()) == (std::is_heap_until(i60, i60+6, std::greater<int>()) == i60+6));
+    assert(std::is_heap(i61, i61+6, std::greater<int>()) == (std::is_heap_until(i61, i61+6, std::greater<int>()) == i61+6));
+    assert(std::is_heap(i62, i62+6, std::greater<int>()) == (std::is_heap_until(i62, i62+6, std::greater<int>()) == i62+6));
+    assert(std::is_heap(i63, i63+6, std::greater<int>()) == (std::is_heap_until(i63, i63+6, std::greater<int>()) == i63+6));
+    assert(std::is_heap(i64, i64+6, std::greater<int>()) == (std::is_heap_until(i64, i64+6, std::greater<int>()) == i64+6));
+    assert(std::is_heap(i65, i65+6, std::greater<int>()) == (std::is_heap_until(i65, i65+6, std::greater<int>()) == i65+6));
+    assert(std::is_heap(i66, i66+6, std::greater<int>()) == (std::is_heap_until(i66, i66+6, std::greater<int>()) == i66+6));
+    assert(std::is_heap(i67, i67+6, std::greater<int>()) == (std::is_heap_until(i67, i67+6, std::greater<int>()) == i67+6));
+    assert(std::is_heap(i68, i68+6, std::greater<int>()) == (std::is_heap_until(i68, i68+6, std::greater<int>()) == i68+6));
+    assert(std::is_heap(i69, i69+6, std::greater<int>()) == (std::is_heap_until(i69, i69+6, std::greater<int>()) == i69+6));
+    assert(std::is_heap(i70, i70+6, std::greater<int>()) == (std::is_heap_until(i70, i70+6, std::greater<int>()) == i70+6));
+    assert(std::is_heap(i71, i71+6, std::greater<int>()) == (std::is_heap_until(i71, i71+6, std::greater<int>()) == i71+6));
+    assert(std::is_heap(i72, i72+6, std::greater<int>()) == (std::is_heap_until(i72, i72+6, std::greater<int>()) == i72+6));
+    assert(std::is_heap(i73, i73+6, std::greater<int>()) == (std::is_heap_until(i73, i73+6, std::greater<int>()) == i73+6));
+    assert(std::is_heap(i74, i74+6, std::greater<int>()) == (std::is_heap_until(i74, i74+6, std::greater<int>()) == i74+6));
+    assert(std::is_heap(i75, i75+6, std::greater<int>()) == (std::is_heap_until(i75, i75+6, std::greater<int>()) == i75+6));
+    assert(std::is_heap(i76, i76+6, std::greater<int>()) == (std::is_heap_until(i76, i76+6, std::greater<int>()) == i76+6));
+    assert(std::is_heap(i77, i77+6, std::greater<int>()) == (std::is_heap_until(i77, i77+6, std::greater<int>()) == i77+6));
+    assert(std::is_heap(i78, i78+6, std::greater<int>()) == (std::is_heap_until(i78, i78+6, std::greater<int>()) == i78+6));
+    assert(std::is_heap(i79, i79+6, std::greater<int>()) == (std::is_heap_until(i79, i79+6, std::greater<int>()) == i79+6));
+    assert(std::is_heap(i80, i80+6, std::greater<int>()) == (std::is_heap_until(i80, i80+6, std::greater<int>()) == i80+6));
+    assert(std::is_heap(i81, i81+6, std::greater<int>()) == (std::is_heap_until(i81, i81+6, std::greater<int>()) == i81+6));
+    assert(std::is_heap(i82, i82+6, std::greater<int>()) == (std::is_heap_until(i82, i82+6, std::greater<int>()) == i82+6));
+    assert(std::is_heap(i83, i83+6, std::greater<int>()) == (std::is_heap_until(i83, i83+6, std::greater<int>()) == i83+6));
+    assert(std::is_heap(i84, i84+6, std::greater<int>()) == (std::is_heap_until(i84, i84+6, std::greater<int>()) == i84+6));
+    assert(std::is_heap(i85, i85+6, std::greater<int>()) == (std::is_heap_until(i85, i85+6, std::greater<int>()) == i85+6));
+    assert(std::is_heap(i86, i86+6, std::greater<int>()) == (std::is_heap_until(i86, i86+6, std::greater<int>()) == i86+6));
+    assert(std::is_heap(i87, i87+6, std::greater<int>()) == (std::is_heap_until(i87, i87+6, std::greater<int>()) == i87+6));
+    assert(std::is_heap(i88, i88+6, std::greater<int>()) == (std::is_heap_until(i88, i88+6, std::greater<int>()) == i88+6));
+    assert(std::is_heap(i89, i89+6, std::greater<int>()) == (std::is_heap_until(i89, i89+6, std::greater<int>()) == i89+6));
+    assert(std::is_heap(i90, i90+6, std::greater<int>()) == (std::is_heap_until(i90, i90+6, std::greater<int>()) == i90+6));
+    assert(std::is_heap(i91, i91+6, std::greater<int>()) == (std::is_heap_until(i91, i91+6, std::greater<int>()) == i91+6));
+    assert(std::is_heap(i92, i92+6, std::greater<int>()) == (std::is_heap_until(i92, i92+6, std::greater<int>()) == i92+6));
+    assert(std::is_heap(i93, i93+6, std::greater<int>()) == (std::is_heap_until(i93, i93+6, std::greater<int>()) == i93+6));
+    assert(std::is_heap(i94, i94+6, std::greater<int>()) == (std::is_heap_until(i94, i94+6, std::greater<int>()) == i94+6));
+    assert(std::is_heap(i95, i95+6, std::greater<int>()) == (std::is_heap_until(i95, i95+6, std::greater<int>()) == i95+6));
+    assert(std::is_heap(i96, i96+6, std::greater<int>()) == (std::is_heap_until(i96, i96+6, std::greater<int>()) == i96+6));
+    assert(std::is_heap(i97, i97+6, std::greater<int>()) == (std::is_heap_until(i97, i97+6, std::greater<int>()) == i97+6));
+    assert(std::is_heap(i98, i98+6, std::greater<int>()) == (std::is_heap_until(i98, i98+6, std::greater<int>()) == i98+6));
+    assert(std::is_heap(i99, i99+6, std::greater<int>()) == (std::is_heap_until(i99, i99+6, std::greater<int>()) == i99+6));
+    assert(std::is_heap(i100, i100+6, std::greater<int>()) == (std::is_heap_until(i100, i100+6, std::greater<int>()) == i100+6));
+    assert(std::is_heap(i101, i101+6, std::greater<int>()) == (std::is_heap_until(i101, i101+6, std::greater<int>()) == i101+6));
+    assert(std::is_heap(i102, i102+6, std::greater<int>()) == (std::is_heap_until(i102, i102+6, std::greater<int>()) == i102+6));
+    assert(std::is_heap(i103, i103+6, std::greater<int>()) == (std::is_heap_until(i103, i103+6, std::greater<int>()) == i103+6));
+    assert(std::is_heap(i104, i104+6, std::greater<int>()) == (std::is_heap_until(i104, i104+6, std::greater<int>()) == i104+6));
+    assert(std::is_heap(i105, i105+6, std::greater<int>()) == (std::is_heap_until(i105, i105+6, std::greater<int>()) == i105+6));
+    assert(std::is_heap(i106, i106+6, std::greater<int>()) == (std::is_heap_until(i106, i106+6, std::greater<int>()) == i106+6));
+    assert(std::is_heap(i107, i107+6, std::greater<int>()) == (std::is_heap_until(i107, i107+6, std::greater<int>()) == i107+6));
+    assert(std::is_heap(i108, i108+6, std::greater<int>()) == (std::is_heap_until(i108, i108+6, std::greater<int>()) == i108+6));
+    assert(std::is_heap(i109, i109+6, std::greater<int>()) == (std::is_heap_until(i109, i109+6, std::greater<int>()) == i109+6));
+    assert(std::is_heap(i110, i110+6, std::greater<int>()) == (std::is_heap_until(i110, i110+6, std::greater<int>()) == i110+6));
+    assert(std::is_heap(i111, i111+6, std::greater<int>()) == (std::is_heap_until(i111, i111+6, std::greater<int>()) == i111+6));
+    assert(std::is_heap(i112, i112+6, std::greater<int>()) == (std::is_heap_until(i112, i112+6, std::greater<int>()) == i112+6));
+    assert(std::is_heap(i113, i113+6, std::greater<int>()) == (std::is_heap_until(i113, i113+6, std::greater<int>()) == i113+6));
+    assert(std::is_heap(i114, i114+6, std::greater<int>()) == (std::is_heap_until(i114, i114+6, std::greater<int>()) == i114+6));
+    assert(std::is_heap(i115, i115+6, std::greater<int>()) == (std::is_heap_until(i115, i115+6, std::greater<int>()) == i115+6));
+    assert(std::is_heap(i116, i116+6, std::greater<int>()) == (std::is_heap_until(i116, i116+6, std::greater<int>()) == i116+6));
+    assert(std::is_heap(i117, i117+6, std::greater<int>()) == (std::is_heap_until(i117, i117+6, std::greater<int>()) == i117+6));
+    assert(std::is_heap(i118, i118+6, std::greater<int>()) == (std::is_heap_until(i118, i118+6, std::greater<int>()) == i118+6));
+    assert(std::is_heap(i119, i119+6, std::greater<int>()) == (std::is_heap_until(i119, i119+6, std::greater<int>()) == i119+6));
+    int i120[] = {0, 0, 0, 0, 0, 0, 0};
+    int i121[] = {0, 0, 0, 0, 0, 0, 1};
+    int i122[] = {0, 0, 0, 0, 0, 1, 0};
+    int i123[] = {0, 0, 0, 0, 0, 1, 1};
+    int i124[] = {0, 0, 0, 0, 1, 0, 0};
+    int i125[] = {0, 0, 0, 0, 1, 0, 1};
+    int i126[] = {0, 0, 0, 0, 1, 1, 0};
+    int i127[] = {0, 0, 0, 0, 1, 1, 1};
+    int i128[] = {0, 0, 0, 1, 0, 0, 0};
+    int i129[] = {0, 0, 0, 1, 0, 0, 1};
+    int i130[] = {0, 0, 0, 1, 0, 1, 0};
+    int i131[] = {0, 0, 0, 1, 0, 1, 1};
+    int i132[] = {0, 0, 0, 1, 1, 0, 0};
+    int i133[] = {0, 0, 0, 1, 1, 0, 1};
+    int i134[] = {0, 0, 0, 1, 1, 1, 0};
+    int i135[] = {0, 0, 0, 1, 1, 1, 1};
+    int i136[] = {0, 0, 1, 0, 0, 0, 0};
+    int i137[] = {0, 0, 1, 0, 0, 0, 1};
+    int i138[] = {0, 0, 1, 0, 0, 1, 0};
+    int i139[] = {0, 0, 1, 0, 0, 1, 1};
+    int i140[] = {0, 0, 1, 0, 1, 0, 0};
+    int i141[] = {0, 0, 1, 0, 1, 0, 1};
+    int i142[] = {0, 0, 1, 0, 1, 1, 0};
+    int i143[] = {0, 0, 1, 0, 1, 1, 1};
+    int i144[] = {0, 0, 1, 1, 0, 0, 0};
+    int i145[] = {0, 0, 1, 1, 0, 0, 1};
+    int i146[] = {0, 0, 1, 1, 0, 1, 0};
+    int i147[] = {0, 0, 1, 1, 0, 1, 1};
+    int i148[] = {0, 0, 1, 1, 1, 0, 0};
+    int i149[] = {0, 0, 1, 1, 1, 0, 1};
+    int i150[] = {0, 0, 1, 1, 1, 1, 0};
+    int i151[] = {0, 0, 1, 1, 1, 1, 1};
+    int i152[] = {0, 1, 0, 0, 0, 0, 0};
+    int i153[] = {0, 1, 0, 0, 0, 0, 1};
+    int i154[] = {0, 1, 0, 0, 0, 1, 0};
+    int i155[] = {0, 1, 0, 0, 0, 1, 1};
+    int i156[] = {0, 1, 0, 0, 1, 0, 0};
+    int i157[] = {0, 1, 0, 0, 1, 0, 1};
+    int i158[] = {0, 1, 0, 0, 1, 1, 0};
+    int i159[] = {0, 1, 0, 0, 1, 1, 1};
+    int i160[] = {0, 1, 0, 1, 0, 0, 0};
+    int i161[] = {0, 1, 0, 1, 0, 0, 1};
+    int i162[] = {0, 1, 0, 1, 0, 1, 0};
+    int i163[] = {0, 1, 0, 1, 0, 1, 1};
+    int i164[] = {0, 1, 0, 1, 1, 0, 0};
+    int i165[] = {0, 1, 0, 1, 1, 0, 1};
+    int i166[] = {0, 1, 0, 1, 1, 1, 0};
+    int i167[] = {0, 1, 0, 1, 1, 1, 1};
+    int i168[] = {0, 1, 1, 0, 0, 0, 0};
+    int i169[] = {0, 1, 1, 0, 0, 0, 1};
+    int i170[] = {0, 1, 1, 0, 0, 1, 0};
+    int i171[] = {0, 1, 1, 0, 0, 1, 1};
+    int i172[] = {0, 1, 1, 0, 1, 0, 0};
+    int i173[] = {0, 1, 1, 0, 1, 0, 1};
+    int i174[] = {0, 1, 1, 0, 1, 1, 0};
+    int i175[] = {0, 1, 1, 0, 1, 1, 1};
+    int i176[] = {0, 1, 1, 1, 0, 0, 0};
+    int i177[] = {0, 1, 1, 1, 0, 0, 1};
+    int i178[] = {0, 1, 1, 1, 0, 1, 0};
+    int i179[] = {0, 1, 1, 1, 0, 1, 1};
+    int i180[] = {0, 1, 1, 1, 1, 0, 0};
+    int i181[] = {0, 1, 1, 1, 1, 0, 1};
+    int i182[] = {0, 1, 1, 1, 1, 1, 0};
+    int i183[] = {0, 1, 1, 1, 1, 1, 1};
+    int i184[] = {1, 0, 0, 0, 0, 0, 0};
+    int i185[] = {1, 0, 0, 0, 0, 0, 1};
+    int i186[] = {1, 0, 0, 0, 0, 1, 0};
+    int i187[] = {1, 0, 0, 0, 0, 1, 1};
+    int i188[] = {1, 0, 0, 0, 1, 0, 0};
+    int i189[] = {1, 0, 0, 0, 1, 0, 1};
+    int i190[] = {1, 0, 0, 0, 1, 1, 0};
+    int i191[] = {1, 0, 0, 0, 1, 1, 1};
+    int i192[] = {1, 0, 0, 1, 0, 0, 0};
+    int i193[] = {1, 0, 0, 1, 0, 0, 1};
+    int i194[] = {1, 0, 0, 1, 0, 1, 0};
+    int i195[] = {1, 0, 0, 1, 0, 1, 1};
+    int i196[] = {1, 0, 0, 1, 1, 0, 0};
+    int i197[] = {1, 0, 0, 1, 1, 0, 1};
+    int i198[] = {1, 0, 0, 1, 1, 1, 0};
+    int i199[] = {1, 0, 0, 1, 1, 1, 1};
+    int i200[] = {1, 0, 1, 0, 0, 0, 0};
+    int i201[] = {1, 0, 1, 0, 0, 0, 1};
+    int i202[] = {1, 0, 1, 0, 0, 1, 0};
+    int i203[] = {1, 0, 1, 0, 0, 1, 1};
+    int i204[] = {1, 0, 1, 0, 1, 0, 0};
+    int i205[] = {1, 0, 1, 0, 1, 0, 1};
+    int i206[] = {1, 0, 1, 0, 1, 1, 0};
+    int i207[] = {1, 0, 1, 0, 1, 1, 1};
+    int i208[] = {1, 0, 1, 1, 0, 0, 0};
+    int i209[] = {1, 0, 1, 1, 0, 0, 1};
+    int i210[] = {1, 0, 1, 1, 0, 1, 0};
+    int i211[] = {1, 0, 1, 1, 0, 1, 1};
+    int i212[] = {1, 0, 1, 1, 1, 0, 0};
+    int i213[] = {1, 0, 1, 1, 1, 0, 1};
+    int i214[] = {1, 0, 1, 1, 1, 1, 0};
+    int i215[] = {1, 0, 1, 1, 1, 1, 1};
+    int i216[] = {1, 1, 0, 0, 0, 0, 0};
+    int i217[] = {1, 1, 0, 0, 0, 0, 1};
+    int i218[] = {1, 1, 0, 0, 0, 1, 0};
+    int i219[] = {1, 1, 0, 0, 0, 1, 1};
+    int i220[] = {1, 1, 0, 0, 1, 0, 0};
+    int i221[] = {1, 1, 0, 0, 1, 0, 1};
+    int i222[] = {1, 1, 0, 0, 1, 1, 0};
+    int i223[] = {1, 1, 0, 0, 1, 1, 1};
+    int i224[] = {1, 1, 0, 1, 0, 0, 0};
+    int i225[] = {1, 1, 0, 1, 0, 0, 1};
+    int i226[] = {1, 1, 0, 1, 0, 1, 0};
+    int i227[] = {1, 1, 0, 1, 0, 1, 1};
+    int i228[] = {1, 1, 0, 1, 1, 0, 0};
+    int i229[] = {1, 1, 0, 1, 1, 0, 1};
+    int i230[] = {1, 1, 0, 1, 1, 1, 0};
+    int i231[] = {1, 1, 0, 1, 1, 1, 1};
+    int i232[] = {1, 1, 1, 0, 0, 0, 0};
+    int i233[] = {1, 1, 1, 0, 0, 0, 1};
+    int i234[] = {1, 1, 1, 0, 0, 1, 0};
+    int i235[] = {1, 1, 1, 0, 0, 1, 1};
+    int i236[] = {1, 1, 1, 0, 1, 0, 0};
+    int i237[] = {1, 1, 1, 0, 1, 0, 1};
+    int i238[] = {1, 1, 1, 0, 1, 1, 0};
+    int i239[] = {1, 1, 1, 0, 1, 1, 1};
+    int i240[] = {1, 1, 1, 1, 0, 0, 0};
+    int i241[] = {1, 1, 1, 1, 0, 0, 1};
+    int i242[] = {1, 1, 1, 1, 0, 1, 0};
+    int i243[] = {1, 1, 1, 1, 0, 1, 1};
+    int i244[] = {1, 1, 1, 1, 1, 0, 0};
+    int i245[] = {1, 1, 1, 1, 1, 0, 1};
+    int i246[] = {1, 1, 1, 1, 1, 1, 0};
+    assert(std::is_heap(i120, i120+7, std::greater<int>()) == (std::is_heap_until(i120, i120+7, std::greater<int>()) == i120+7));
+    assert(std::is_heap(i121, i121+7, std::greater<int>()) == (std::is_heap_until(i121, i121+7, std::greater<int>()) == i121+7));
+    assert(std::is_heap(i122, i122+7, std::greater<int>()) == (std::is_heap_until(i122, i122+7, std::greater<int>()) == i122+7));
+    assert(std::is_heap(i123, i123+7, std::greater<int>()) == (std::is_heap_until(i123, i123+7, std::greater<int>()) == i123+7));
+    assert(std::is_heap(i124, i124+7, std::greater<int>()) == (std::is_heap_until(i124, i124+7, std::greater<int>()) == i124+7));
+    assert(std::is_heap(i125, i125+7, std::greater<int>()) == (std::is_heap_until(i125, i125+7, std::greater<int>()) == i125+7));
+    assert(std::is_heap(i126, i126+7, std::greater<int>()) == (std::is_heap_until(i126, i126+7, std::greater<int>()) == i126+7));
+    assert(std::is_heap(i127, i127+7, std::greater<int>()) == (std::is_heap_until(i127, i127+7, std::greater<int>()) == i127+7));
+    assert(std::is_heap(i128, i128+7, std::greater<int>()) == (std::is_heap_until(i128, i128+7, std::greater<int>()) == i128+7));
+    assert(std::is_heap(i129, i129+7, std::greater<int>()) == (std::is_heap_until(i129, i129+7, std::greater<int>()) == i129+7));
+    assert(std::is_heap(i130, i130+7, std::greater<int>()) == (std::is_heap_until(i130, i130+7, std::greater<int>()) == i130+7));
+    assert(std::is_heap(i131, i131+7, std::greater<int>()) == (std::is_heap_until(i131, i131+7, std::greater<int>()) == i131+7));
+    assert(std::is_heap(i132, i132+7, std::greater<int>()) == (std::is_heap_until(i132, i132+7, std::greater<int>()) == i132+7));
+    assert(std::is_heap(i133, i133+7, std::greater<int>()) == (std::is_heap_until(i133, i133+7, std::greater<int>()) == i133+7));
+    assert(std::is_heap(i134, i134+7, std::greater<int>()) == (std::is_heap_until(i134, i134+7, std::greater<int>()) == i134+7));
+    assert(std::is_heap(i135, i135+7, std::greater<int>()) == (std::is_heap_until(i135, i135+7, std::greater<int>()) == i135+7));
+    assert(std::is_heap(i136, i136+7, std::greater<int>()) == (std::is_heap_until(i136, i136+7, std::greater<int>()) == i136+7));
+    assert(std::is_heap(i137, i137+7, std::greater<int>()) == (std::is_heap_until(i137, i137+7, std::greater<int>()) == i137+7));
+    assert(std::is_heap(i138, i138+7, std::greater<int>()) == (std::is_heap_until(i138, i138+7, std::greater<int>()) == i138+7));
+    assert(std::is_heap(i139, i139+7, std::greater<int>()) == (std::is_heap_until(i139, i139+7, std::greater<int>()) == i139+7));
+    assert(std::is_heap(i140, i140+7, std::greater<int>()) == (std::is_heap_until(i140, i140+7, std::greater<int>()) == i140+7));
+    assert(std::is_heap(i141, i141+7, std::greater<int>()) == (std::is_heap_until(i141, i141+7, std::greater<int>()) == i141+7));
+    assert(std::is_heap(i142, i142+7, std::greater<int>()) == (std::is_heap_until(i142, i142+7, std::greater<int>()) == i142+7));
+    assert(std::is_heap(i143, i143+7, std::greater<int>()) == (std::is_heap_until(i143, i143+7, std::greater<int>()) == i143+7));
+    assert(std::is_heap(i144, i144+7, std::greater<int>()) == (std::is_heap_until(i144, i144+7, std::greater<int>()) == i144+7));
+    assert(std::is_heap(i145, i145+7, std::greater<int>()) == (std::is_heap_until(i145, i145+7, std::greater<int>()) == i145+7));
+    assert(std::is_heap(i146, i146+7, std::greater<int>()) == (std::is_heap_until(i146, i146+7, std::greater<int>()) == i146+7));
+    assert(std::is_heap(i147, i147+7, std::greater<int>()) == (std::is_heap_until(i147, i147+7, std::greater<int>()) == i147+7));
+    assert(std::is_heap(i148, i148+7, std::greater<int>()) == (std::is_heap_until(i148, i148+7, std::greater<int>()) == i148+7));
+    assert(std::is_heap(i149, i149+7, std::greater<int>()) == (std::is_heap_until(i149, i149+7, std::greater<int>()) == i149+7));
+    assert(std::is_heap(i150, i150+7, std::greater<int>()) == (std::is_heap_until(i150, i150+7, std::greater<int>()) == i150+7));
+    assert(std::is_heap(i151, i151+7, std::greater<int>()) == (std::is_heap_until(i151, i151+7, std::greater<int>()) == i151+7));
+    assert(std::is_heap(i152, i152+7, std::greater<int>()) == (std::is_heap_until(i152, i152+7, std::greater<int>()) == i152+7));
+    assert(std::is_heap(i153, i153+7, std::greater<int>()) == (std::is_heap_until(i153, i153+7, std::greater<int>()) == i153+7));
+    assert(std::is_heap(i154, i154+7, std::greater<int>()) == (std::is_heap_until(i154, i154+7, std::greater<int>()) == i154+7));
+    assert(std::is_heap(i155, i155+7, std::greater<int>()) == (std::is_heap_until(i155, i155+7, std::greater<int>()) == i155+7));
+    assert(std::is_heap(i156, i156+7, std::greater<int>()) == (std::is_heap_until(i156, i156+7, std::greater<int>()) == i156+7));
+    assert(std::is_heap(i157, i157+7, std::greater<int>()) == (std::is_heap_until(i157, i157+7, std::greater<int>()) == i157+7));
+    assert(std::is_heap(i158, i158+7, std::greater<int>()) == (std::is_heap_until(i158, i158+7, std::greater<int>()) == i158+7));
+    assert(std::is_heap(i159, i159+7, std::greater<int>()) == (std::is_heap_until(i159, i159+7, std::greater<int>()) == i159+7));
+    assert(std::is_heap(i160, i160+7, std::greater<int>()) == (std::is_heap_until(i160, i160+7, std::greater<int>()) == i160+7));
+    assert(std::is_heap(i161, i161+7, std::greater<int>()) == (std::is_heap_until(i161, i161+7, std::greater<int>()) == i161+7));
+    assert(std::is_heap(i162, i162+7, std::greater<int>()) == (std::is_heap_until(i162, i162+7, std::greater<int>()) == i162+7));
+    assert(std::is_heap(i163, i163+7, std::greater<int>()) == (std::is_heap_until(i163, i163+7, std::greater<int>()) == i163+7));
+    assert(std::is_heap(i164, i164+7, std::greater<int>()) == (std::is_heap_until(i164, i164+7, std::greater<int>()) == i164+7));
+    assert(std::is_heap(i165, i165+7, std::greater<int>()) == (std::is_heap_until(i165, i165+7, std::greater<int>()) == i165+7));
+    assert(std::is_heap(i166, i166+7, std::greater<int>()) == (std::is_heap_until(i166, i166+7, std::greater<int>()) == i166+7));
+    assert(std::is_heap(i167, i167+7, std::greater<int>()) == (std::is_heap_until(i167, i167+7, std::greater<int>()) == i167+7));
+    assert(std::is_heap(i168, i168+7, std::greater<int>()) == (std::is_heap_until(i168, i168+7, std::greater<int>()) == i168+7));
+    assert(std::is_heap(i169, i169+7, std::greater<int>()) == (std::is_heap_until(i169, i169+7, std::greater<int>()) == i169+7));
+    assert(std::is_heap(i170, i170+7, std::greater<int>()) == (std::is_heap_until(i170, i170+7, std::greater<int>()) == i170+7));
+    assert(std::is_heap(i171, i171+7, std::greater<int>()) == (std::is_heap_until(i171, i171+7, std::greater<int>()) == i171+7));
+    assert(std::is_heap(i172, i172+7, std::greater<int>()) == (std::is_heap_until(i172, i172+7, std::greater<int>()) == i172+7));
+    assert(std::is_heap(i173, i173+7, std::greater<int>()) == (std::is_heap_until(i173, i173+7, std::greater<int>()) == i173+7));
+    assert(std::is_heap(i174, i174+7, std::greater<int>()) == (std::is_heap_until(i174, i174+7, std::greater<int>()) == i174+7));
+    assert(std::is_heap(i175, i175+7, std::greater<int>()) == (std::is_heap_until(i175, i175+7, std::greater<int>()) == i175+7));
+    assert(std::is_heap(i176, i176+7, std::greater<int>()) == (std::is_heap_until(i176, i176+7, std::greater<int>()) == i176+7));
+    assert(std::is_heap(i177, i177+7, std::greater<int>()) == (std::is_heap_until(i177, i177+7, std::greater<int>()) == i177+7));
+    assert(std::is_heap(i178, i178+7, std::greater<int>()) == (std::is_heap_until(i178, i178+7, std::greater<int>()) == i178+7));
+    assert(std::is_heap(i179, i179+7, std::greater<int>()) == (std::is_heap_until(i179, i179+7, std::greater<int>()) == i179+7));
+    assert(std::is_heap(i180, i180+7, std::greater<int>()) == (std::is_heap_until(i180, i180+7, std::greater<int>()) == i180+7));
+    assert(std::is_heap(i181, i181+7, std::greater<int>()) == (std::is_heap_until(i181, i181+7, std::greater<int>()) == i181+7));
+    assert(std::is_heap(i182, i182+7, std::greater<int>()) == (std::is_heap_until(i182, i182+7, std::greater<int>()) == i182+7));
+    assert(std::is_heap(i183, i183+7, std::greater<int>()) == (std::is_heap_until(i183, i183+7, std::greater<int>()) == i183+7));
+    assert(std::is_heap(i184, i184+7, std::greater<int>()) == (std::is_heap_until(i184, i184+7, std::greater<int>()) == i184+7));
+    assert(std::is_heap(i185, i185+7, std::greater<int>()) == (std::is_heap_until(i185, i185+7, std::greater<int>()) == i185+7));
+    assert(std::is_heap(i186, i186+7, std::greater<int>()) == (std::is_heap_until(i186, i186+7, std::greater<int>()) == i186+7));
+    assert(std::is_heap(i187, i187+7, std::greater<int>()) == (std::is_heap_until(i187, i187+7, std::greater<int>()) == i187+7));
+    assert(std::is_heap(i188, i188+7, std::greater<int>()) == (std::is_heap_until(i188, i188+7, std::greater<int>()) == i188+7));
+    assert(std::is_heap(i189, i189+7, std::greater<int>()) == (std::is_heap_until(i189, i189+7, std::greater<int>()) == i189+7));
+    assert(std::is_heap(i190, i190+7, std::greater<int>()) == (std::is_heap_until(i190, i190+7, std::greater<int>()) == i190+7));
+    assert(std::is_heap(i191, i191+7, std::greater<int>()) == (std::is_heap_until(i191, i191+7, std::greater<int>()) == i191+7));
+    assert(std::is_heap(i192, i192+7, std::greater<int>()) == (std::is_heap_until(i192, i192+7, std::greater<int>()) == i192+7));
+    assert(std::is_heap(i193, i193+7, std::greater<int>()) == (std::is_heap_until(i193, i193+7, std::greater<int>()) == i193+7));
+    assert(std::is_heap(i194, i194+7, std::greater<int>()) == (std::is_heap_until(i194, i194+7, std::greater<int>()) == i194+7));
+    assert(std::is_heap(i195, i195+7, std::greater<int>()) == (std::is_heap_until(i195, i195+7, std::greater<int>()) == i195+7));
+    assert(std::is_heap(i196, i196+7, std::greater<int>()) == (std::is_heap_until(i196, i196+7, std::greater<int>()) == i196+7));
+    assert(std::is_heap(i197, i197+7, std::greater<int>()) == (std::is_heap_until(i197, i197+7, std::greater<int>()) == i197+7));
+    assert(std::is_heap(i198, i198+7, std::greater<int>()) == (std::is_heap_until(i198, i198+7, std::greater<int>()) == i198+7));
+    assert(std::is_heap(i199, i199+7, std::greater<int>()) == (std::is_heap_until(i199, i199+7, std::greater<int>()) == i199+7));
+    assert(std::is_heap(i200, i200+7, std::greater<int>()) == (std::is_heap_until(i200, i200+7, std::greater<int>()) == i200+7));
+    assert(std::is_heap(i201, i201+7, std::greater<int>()) == (std::is_heap_until(i201, i201+7, std::greater<int>()) == i201+7));
+    assert(std::is_heap(i202, i202+7, std::greater<int>()) == (std::is_heap_until(i202, i202+7, std::greater<int>()) == i202+7));
+    assert(std::is_heap(i203, i203+7, std::greater<int>()) == (std::is_heap_until(i203, i203+7, std::greater<int>()) == i203+7));
+    assert(std::is_heap(i204, i204+7, std::greater<int>()) == (std::is_heap_until(i204, i204+7, std::greater<int>()) == i204+7));
+    assert(std::is_heap(i205, i205+7, std::greater<int>()) == (std::is_heap_until(i205, i205+7, std::greater<int>()) == i205+7));
+    assert(std::is_heap(i206, i206+7, std::greater<int>()) == (std::is_heap_until(i206, i206+7, std::greater<int>()) == i206+7));
+    assert(std::is_heap(i207, i207+7, std::greater<int>()) == (std::is_heap_until(i207, i207+7, std::greater<int>()) == i207+7));
+    assert(std::is_heap(i208, i208+7, std::greater<int>()) == (std::is_heap_until(i208, i208+7, std::greater<int>()) == i208+7));
+    assert(std::is_heap(i209, i209+7, std::greater<int>()) == (std::is_heap_until(i209, i209+7, std::greater<int>()) == i209+7));
+    assert(std::is_heap(i210, i210+7, std::greater<int>()) == (std::is_heap_until(i210, i210+7, std::greater<int>()) == i210+7));
+    assert(std::is_heap(i211, i211+7, std::greater<int>()) == (std::is_heap_until(i211, i211+7, std::greater<int>()) == i211+7));
+    assert(std::is_heap(i212, i212+7, std::greater<int>()) == (std::is_heap_until(i212, i212+7, std::greater<int>()) == i212+7));
+    assert(std::is_heap(i213, i213+7, std::greater<int>()) == (std::is_heap_until(i213, i213+7, std::greater<int>()) == i213+7));
+    assert(std::is_heap(i214, i214+7, std::greater<int>()) == (std::is_heap_until(i214, i214+7, std::greater<int>()) == i214+7));
+    assert(std::is_heap(i215, i215+7, std::greater<int>()) == (std::is_heap_until(i215, i215+7, std::greater<int>()) == i215+7));
+    assert(std::is_heap(i216, i216+7, std::greater<int>()) == (std::is_heap_until(i216, i216+7, std::greater<int>()) == i216+7));
+    assert(std::is_heap(i217, i217+7, std::greater<int>()) == (std::is_heap_until(i217, i217+7, std::greater<int>()) == i217+7));
+    assert(std::is_heap(i218, i218+7, std::greater<int>()) == (std::is_heap_until(i218, i218+7, std::greater<int>()) == i218+7));
+    assert(std::is_heap(i219, i219+7, std::greater<int>()) == (std::is_heap_until(i219, i219+7, std::greater<int>()) == i219+7));
+    assert(std::is_heap(i220, i220+7, std::greater<int>()) == (std::is_heap_until(i220, i220+7, std::greater<int>()) == i220+7));
+    assert(std::is_heap(i221, i221+7, std::greater<int>()) == (std::is_heap_until(i221, i221+7, std::greater<int>()) == i221+7));
+    assert(std::is_heap(i222, i222+7, std::greater<int>()) == (std::is_heap_until(i222, i222+7, std::greater<int>()) == i222+7));
+    assert(std::is_heap(i223, i223+7, std::greater<int>()) == (std::is_heap_until(i223, i223+7, std::greater<int>()) == i223+7));
+    assert(std::is_heap(i224, i224+7, std::greater<int>()) == (std::is_heap_until(i224, i224+7, std::greater<int>()) == i224+7));
+    assert(std::is_heap(i225, i225+7, std::greater<int>()) == (std::is_heap_until(i225, i225+7, std::greater<int>()) == i225+7));
+    assert(std::is_heap(i226, i226+7, std::greater<int>()) == (std::is_heap_until(i226, i226+7, std::greater<int>()) == i226+7));
+    assert(std::is_heap(i227, i227+7, std::greater<int>()) == (std::is_heap_until(i227, i227+7, std::greater<int>()) == i227+7));
+    assert(std::is_heap(i228, i228+7, std::greater<int>()) == (std::is_heap_until(i228, i228+7, std::greater<int>()) == i228+7));
+    assert(std::is_heap(i229, i229+7, std::greater<int>()) == (std::is_heap_until(i229, i229+7, std::greater<int>()) == i229+7));
+    assert(std::is_heap(i230, i230+7, std::greater<int>()) == (std::is_heap_until(i230, i230+7, std::greater<int>()) == i230+7));
+    assert(std::is_heap(i231, i231+7, std::greater<int>()) == (std::is_heap_until(i231, i231+7, std::greater<int>()) == i231+7));
+    assert(std::is_heap(i232, i232+7, std::greater<int>()) == (std::is_heap_until(i232, i232+7, std::greater<int>()) == i232+7));
+    assert(std::is_heap(i233, i233+7, std::greater<int>()) == (std::is_heap_until(i233, i233+7, std::greater<int>()) == i233+7));
+    assert(std::is_heap(i234, i234+7, std::greater<int>()) == (std::is_heap_until(i234, i234+7, std::greater<int>()) == i234+7));
+    assert(std::is_heap(i235, i235+7, std::greater<int>()) == (std::is_heap_until(i235, i235+7, std::greater<int>()) == i235+7));
+    assert(std::is_heap(i236, i236+7, std::greater<int>()) == (std::is_heap_until(i236, i236+7, std::greater<int>()) == i236+7));
+    assert(std::is_heap(i237, i237+7, std::greater<int>()) == (std::is_heap_until(i237, i237+7, std::greater<int>()) == i237+7));
+    assert(std::is_heap(i238, i238+7, std::greater<int>()) == (std::is_heap_until(i238, i238+7, std::greater<int>()) == i238+7));
+    assert(std::is_heap(i239, i239+7, std::greater<int>()) == (std::is_heap_until(i239, i239+7, std::greater<int>()) == i239+7));
+    assert(std::is_heap(i240, i240+7, std::greater<int>()) == (std::is_heap_until(i240, i240+7, std::greater<int>()) == i240+7));
+    assert(std::is_heap(i241, i241+7, std::greater<int>()) == (std::is_heap_until(i241, i241+7, std::greater<int>()) == i241+7));
+    assert(std::is_heap(i242, i242+7, std::greater<int>()) == (std::is_heap_until(i242, i242+7, std::greater<int>()) == i242+7));
+    assert(std::is_heap(i243, i243+7, std::greater<int>()) == (std::is_heap_until(i243, i243+7, std::greater<int>()) == i243+7));
+    assert(std::is_heap(i244, i244+7, std::greater<int>()) == (std::is_heap_until(i244, i244+7, std::greater<int>()) == i244+7));
+    assert(std::is_heap(i245, i245+7, std::greater<int>()) == (std::is_heap_until(i245, i245+7, std::greater<int>()) == i245+7));
+    assert(std::is_heap(i246, i246+7, std::greater<int>()) == (std::is_heap_until(i246, i246+7, std::greater<int>()) == i246+7));
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_until.pass.cpp
new file mode 100644
index 0000000..9708db7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_until.pass.cpp
@@ -0,0 +1,542 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   constexpr bool   // constexpr after C++17
+//   is_heap_until(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 0, 0, 0, 1, 0};
+    int ib[] = {0, 0, 0, 1, 1, 1};
+    return    (std::is_heap_until(std::begin(ia), std::end(ia)) == ia+4)
+           && (std::is_heap_until(std::begin(ib), std::end(ib)) == ib+3);
+    }
+#endif
+
+void test()
+{
+    typedef random_access_iterator<int *> RI;
+    int i1[] = {0, 0};
+    assert(std::is_heap_until(i1, i1) == i1);
+    assert(std::is_heap_until(i1, i1+1) == i1+1);
+    assert(std::is_heap_until(RI(i1), RI(i1)) == RI(i1));
+    assert(std::is_heap_until(RI(i1), RI(i1+1)) == RI(i1+1));
+
+    int i2[] = {0, 1};
+    int i3[] = {1, 0};
+    assert(std::is_heap_until(i1, i1+2) == i1+2);
+    assert(std::is_heap_until(i2, i2+2) == i2+1);
+    assert(std::is_heap_until(i3, i3+2) == i3+2);
+    int i4[] = {0, 0, 0};
+    int i5[] = {0, 0, 1};
+    int i6[] = {0, 1, 0};
+    int i7[] = {0, 1, 1};
+    int i8[] = {1, 0, 0};
+    int i9[] = {1, 0, 1};
+    int i10[] = {1, 1, 0};
+    assert(std::is_heap_until(i4, i4+3) == i4+3);
+    assert(std::is_heap_until(i5, i5+3) == i5+2);
+    assert(std::is_heap_until(i6, i6+3) == i6+1);
+    assert(std::is_heap_until(i7, i7+3) == i7+1);
+    assert(std::is_heap_until(i8, i8+3) == i8+3);
+    assert(std::is_heap_until(i9, i9+3) == i9+3);
+    assert(std::is_heap_until(i10, i10+3) == i10+3);
+    int i11[] = {0, 0, 0, 0};
+    int i12[] = {0, 0, 0, 1};
+    int i13[] = {0, 0, 1, 0};
+    int i14[] = {0, 0, 1, 1};
+    int i15[] = {0, 1, 0, 0};
+    int i16[] = {0, 1, 0, 1};
+    int i17[] = {0, 1, 1, 0};
+    int i18[] = {0, 1, 1, 1};
+    int i19[] = {1, 0, 0, 0};
+    int i20[] = {1, 0, 0, 1};
+    int i21[] = {1, 0, 1, 0};
+    int i22[] = {1, 0, 1, 1};
+    int i23[] = {1, 1, 0, 0};
+    int i24[] = {1, 1, 0, 1};
+    int i25[] = {1, 1, 1, 0};
+    assert(std::is_heap_until(i11, i11+4) == i11+4);
+    assert(std::is_heap_until(i12, i12+4) == i12+3);
+    assert(std::is_heap_until(i13, i13+4) == i13+2);
+    assert(std::is_heap_until(i14, i14+4) == i14+2);
+    assert(std::is_heap_until(i15, i15+4) == i15+1);
+    assert(std::is_heap_until(i16, i16+4) == i16+1);
+    assert(std::is_heap_until(i17, i17+4) == i17+1);
+    assert(std::is_heap_until(i18, i18+4) == i18+1);
+    assert(std::is_heap_until(i19, i19+4) == i19+4);
+    assert(std::is_heap_until(i20, i20+4) == i20+3);
+    assert(std::is_heap_until(i21, i21+4) == i21+4);
+    assert(std::is_heap_until(i22, i22+4) == i22+3);
+    assert(std::is_heap_until(i23, i23+4) == i23+4);
+    assert(std::is_heap_until(i24, i24+4) == i24+4);
+    assert(std::is_heap_until(i25, i25+4) == i25+4);
+    int i26[] = {0, 0, 0, 0, 0};
+    int i27[] = {0, 0, 0, 0, 1};
+    int i28[] = {0, 0, 0, 1, 0};
+    int i29[] = {0, 0, 0, 1, 1};
+    int i30[] = {0, 0, 1, 0, 0};
+    int i31[] = {0, 0, 1, 0, 1};
+    int i32[] = {0, 0, 1, 1, 0};
+    int i33[] = {0, 0, 1, 1, 1};
+    int i34[] = {0, 1, 0, 0, 0};
+    int i35[] = {0, 1, 0, 0, 1};
+    int i36[] = {0, 1, 0, 1, 0};
+    int i37[] = {0, 1, 0, 1, 1};
+    int i38[] = {0, 1, 1, 0, 0};
+    int i39[] = {0, 1, 1, 0, 1};
+    int i40[] = {0, 1, 1, 1, 0};
+    int i41[] = {0, 1, 1, 1, 1};
+    int i42[] = {1, 0, 0, 0, 0};
+    int i43[] = {1, 0, 0, 0, 1};
+    int i44[] = {1, 0, 0, 1, 0};
+    int i45[] = {1, 0, 0, 1, 1};
+    int i46[] = {1, 0, 1, 0, 0};
+    int i47[] = {1, 0, 1, 0, 1};
+    int i48[] = {1, 0, 1, 1, 0};
+    int i49[] = {1, 0, 1, 1, 1};
+    int i50[] = {1, 1, 0, 0, 0};
+    int i51[] = {1, 1, 0, 0, 1};
+    int i52[] = {1, 1, 0, 1, 0};
+    int i53[] = {1, 1, 0, 1, 1};
+    int i54[] = {1, 1, 1, 0, 0};
+    int i55[] = {1, 1, 1, 0, 1};
+    int i56[] = {1, 1, 1, 1, 0};
+    assert(std::is_heap_until(i26, i26+5) == i26+5);
+    assert(std::is_heap_until(i27, i27+5) == i27+4);
+    assert(std::is_heap_until(i28, i28+5) == i28+3);
+    assert(std::is_heap_until(i29, i29+5) == i29+3);
+    assert(std::is_heap_until(i30, i30+5) == i30+2);
+    assert(std::is_heap_until(i31, i31+5) == i31+2);
+    assert(std::is_heap_until(i32, i32+5) == i32+2);
+    assert(std::is_heap_until(i33, i33+5) == i33+2);
+    assert(std::is_heap_until(i34, i34+5) == i34+1);
+    assert(std::is_heap_until(i35, i35+5) == i35+1);
+    assert(std::is_heap_until(i36, i36+5) == i36+1);
+    assert(std::is_heap_until(i37, i37+5) == i37+1);
+    assert(std::is_heap_until(i38, i38+5) == i38+1);
+    assert(std::is_heap_until(i39, i39+5) == i39+1);
+    assert(std::is_heap_until(i40, i40+5) == i40+1);
+    assert(std::is_heap_until(i41, i41+5) == i41+1);
+    assert(std::is_heap_until(i42, i42+5) == i42+5);
+    assert(std::is_heap_until(i43, i43+5) == i43+4);
+    assert(std::is_heap_until(i44, i44+5) == i44+3);
+    assert(std::is_heap_until(i45, i45+5) == i45+3);
+    assert(std::is_heap_until(i46, i46+5) == i46+5);
+    assert(std::is_heap_until(i47, i47+5) == i47+4);
+    assert(std::is_heap_until(i48, i48+5) == i48+3);
+    assert(std::is_heap_until(i49, i49+5) == i49+3);
+    assert(std::is_heap_until(i50, i50+5) == i50+5);
+    assert(std::is_heap_until(i51, i51+5) == i51+5);
+    assert(std::is_heap_until(i52, i52+5) == i52+5);
+    assert(std::is_heap_until(i53, i53+5) == i53+5);
+    assert(std::is_heap_until(i54, i54+5) == i54+5);
+    assert(std::is_heap_until(i55, i55+5) == i55+5);
+    assert(std::is_heap_until(i56, i56+5) == i56+5);
+    int i57[] = {0, 0, 0, 0, 0, 0};
+    int i58[] = {0, 0, 0, 0, 0, 1};
+    int i59[] = {0, 0, 0, 0, 1, 0};
+    int i60[] = {0, 0, 0, 0, 1, 1};
+    int i61[] = {0, 0, 0, 1, 0, 0};
+    int i62[] = {0, 0, 0, 1, 0, 1};
+    int i63[] = {0, 0, 0, 1, 1, 0};
+    int i64[] = {0, 0, 0, 1, 1, 1};
+    int i65[] = {0, 0, 1, 0, 0, 0};
+    int i66[] = {0, 0, 1, 0, 0, 1};
+    int i67[] = {0, 0, 1, 0, 1, 0};
+    int i68[] = {0, 0, 1, 0, 1, 1};
+    int i69[] = {0, 0, 1, 1, 0, 0};
+    int i70[] = {0, 0, 1, 1, 0, 1};
+    int i71[] = {0, 0, 1, 1, 1, 0};
+    int i72[] = {0, 0, 1, 1, 1, 1};
+    int i73[] = {0, 1, 0, 0, 0, 0};
+    int i74[] = {0, 1, 0, 0, 0, 1};
+    int i75[] = {0, 1, 0, 0, 1, 0};
+    int i76[] = {0, 1, 0, 0, 1, 1};
+    int i77[] = {0, 1, 0, 1, 0, 0};
+    int i78[] = {0, 1, 0, 1, 0, 1};
+    int i79[] = {0, 1, 0, 1, 1, 0};
+    int i80[] = {0, 1, 0, 1, 1, 1};
+    int i81[] = {0, 1, 1, 0, 0, 0};
+    int i82[] = {0, 1, 1, 0, 0, 1};
+    int i83[] = {0, 1, 1, 0, 1, 0};
+    int i84[] = {0, 1, 1, 0, 1, 1};
+    int i85[] = {0, 1, 1, 1, 0, 0};
+    int i86[] = {0, 1, 1, 1, 0, 1};
+    int i87[] = {0, 1, 1, 1, 1, 0};
+    int i88[] = {0, 1, 1, 1, 1, 1};
+    int i89[] = {1, 0, 0, 0, 0, 0};
+    int i90[] = {1, 0, 0, 0, 0, 1};
+    int i91[] = {1, 0, 0, 0, 1, 0};
+    int i92[] = {1, 0, 0, 0, 1, 1};
+    int i93[] = {1, 0, 0, 1, 0, 0};
+    int i94[] = {1, 0, 0, 1, 0, 1};
+    int i95[] = {1, 0, 0, 1, 1, 0};
+    int i96[] = {1, 0, 0, 1, 1, 1};
+    int i97[] = {1, 0, 1, 0, 0, 0};
+    int i98[] = {1, 0, 1, 0, 0, 1};
+    int i99[] = {1, 0, 1, 0, 1, 0};
+    int i100[] = {1, 0, 1, 0, 1, 1};
+    int i101[] = {1, 0, 1, 1, 0, 0};
+    int i102[] = {1, 0, 1, 1, 0, 1};
+    int i103[] = {1, 0, 1, 1, 1, 0};
+    int i104[] = {1, 0, 1, 1, 1, 1};
+    int i105[] = {1, 1, 0, 0, 0, 0};
+    int i106[] = {1, 1, 0, 0, 0, 1};
+    int i107[] = {1, 1, 0, 0, 1, 0};
+    int i108[] = {1, 1, 0, 0, 1, 1};
+    int i109[] = {1, 1, 0, 1, 0, 0};
+    int i110[] = {1, 1, 0, 1, 0, 1};
+    int i111[] = {1, 1, 0, 1, 1, 0};
+    int i112[] = {1, 1, 0, 1, 1, 1};
+    int i113[] = {1, 1, 1, 0, 0, 0};
+    int i114[] = {1, 1, 1, 0, 0, 1};
+    int i115[] = {1, 1, 1, 0, 1, 0};
+    int i116[] = {1, 1, 1, 0, 1, 1};
+    int i117[] = {1, 1, 1, 1, 0, 0};
+    int i118[] = {1, 1, 1, 1, 0, 1};
+    int i119[] = {1, 1, 1, 1, 1, 0};
+    assert(std::is_heap_until(i57, i57+6) == i57+6);
+    assert(std::is_heap_until(i58, i58+6) == i58+5);
+    assert(std::is_heap_until(i59, i59+6) == i59+4);
+    assert(std::is_heap_until(i60, i60+6) == i60+4);
+    assert(std::is_heap_until(i61, i61+6) == i61+3);
+    assert(std::is_heap_until(i62, i62+6) == i62+3);
+    assert(std::is_heap_until(i63, i63+6) == i63+3);
+    assert(std::is_heap_until(i64, i64+6) == i64+3);
+    assert(std::is_heap_until(i65, i65+6) == i65+2);
+    assert(std::is_heap_until(i66, i66+6) == i66+2);
+    assert(std::is_heap_until(i67, i67+6) == i67+2);
+    assert(std::is_heap_until(i68, i68+6) == i68+2);
+    assert(std::is_heap_until(i69, i69+6) == i69+2);
+    assert(std::is_heap_until(i70, i70+6) == i70+2);
+    assert(std::is_heap_until(i71, i71+6) == i71+2);
+    assert(std::is_heap_until(i72, i72+6) == i72+2);
+    assert(std::is_heap_until(i73, i73+6) == i73+1);
+    assert(std::is_heap_until(i74, i74+6) == i74+1);
+    assert(std::is_heap_until(i75, i75+6) == i75+1);
+    assert(std::is_heap_until(i76, i76+6) == i76+1);
+    assert(std::is_heap_until(i77, i77+6) == i77+1);
+    assert(std::is_heap_until(i78, i78+6) == i78+1);
+    assert(std::is_heap_until(i79, i79+6) == i79+1);
+    assert(std::is_heap_until(i80, i80+6) == i80+1);
+    assert(std::is_heap_until(i81, i81+6) == i81+1);
+    assert(std::is_heap_until(i82, i82+6) == i82+1);
+    assert(std::is_heap_until(i83, i83+6) == i83+1);
+    assert(std::is_heap_until(i84, i84+6) == i84+1);
+    assert(std::is_heap_until(i85, i85+6) == i85+1);
+    assert(std::is_heap_until(i86, i86+6) == i86+1);
+    assert(std::is_heap_until(i87, i87+6) == i87+1);
+    assert(std::is_heap_until(i88, i88+6) == i88+1);
+    assert(std::is_heap_until(i89, i89+6) == i89+6);
+    assert(std::is_heap_until(i90, i90+6) == i90+5);
+    assert(std::is_heap_until(i91, i91+6) == i91+4);
+    assert(std::is_heap_until(i92, i92+6) == i92+4);
+    assert(std::is_heap_until(i93, i93+6) == i93+3);
+    assert(std::is_heap_until(i94, i94+6) == i94+3);
+    assert(std::is_heap_until(i95, i95+6) == i95+3);
+    assert(std::is_heap_until(i96, i96+6) == i96+3);
+    assert(std::is_heap_until(i97, i97+6) == i97+6);
+    assert(std::is_heap_until(i98, i98+6) == i98+6);
+    assert(std::is_heap_until(i99, i99+6) == i99+4);
+    assert(std::is_heap_until(i100, i100+6) == i100+4);
+    assert(std::is_heap_until(i101, i101+6) == i101+3);
+    assert(std::is_heap_until(i102, i102+6) == i102+3);
+    assert(std::is_heap_until(i103, i103+6) == i103+3);
+    assert(std::is_heap_until(i104, i104+6) == i104+3);
+    assert(std::is_heap_until(i105, i105+6) == i105+6);
+    assert(std::is_heap_until(i106, i106+6) == i106+5);
+    assert(std::is_heap_until(i107, i107+6) == i107+6);
+    assert(std::is_heap_until(i108, i108+6) == i108+5);
+    assert(std::is_heap_until(i109, i109+6) == i109+6);
+    assert(std::is_heap_until(i110, i110+6) == i110+5);
+    assert(std::is_heap_until(i111, i111+6) == i111+6);
+    assert(std::is_heap_until(i112, i112+6) == i112+5);
+    assert(std::is_heap_until(i113, i113+6) == i113+6);
+    assert(std::is_heap_until(i114, i114+6) == i114+6);
+    assert(std::is_heap_until(i115, i115+6) == i115+6);
+    assert(std::is_heap_until(i116, i116+6) == i116+6);
+    assert(std::is_heap_until(i117, i117+6) == i117+6);
+    assert(std::is_heap_until(i118, i118+6) == i118+6);
+    assert(std::is_heap_until(i119, i119+6) == i119+6);
+    int i120[] = {0, 0, 0, 0, 0, 0, 0};
+    int i121[] = {0, 0, 0, 0, 0, 0, 1};
+    int i122[] = {0, 0, 0, 0, 0, 1, 0};
+    int i123[] = {0, 0, 0, 0, 0, 1, 1};
+    int i124[] = {0, 0, 0, 0, 1, 0, 0};
+    int i125[] = {0, 0, 0, 0, 1, 0, 1};
+    int i126[] = {0, 0, 0, 0, 1, 1, 0};
+    int i127[] = {0, 0, 0, 0, 1, 1, 1};
+    int i128[] = {0, 0, 0, 1, 0, 0, 0};
+    int i129[] = {0, 0, 0, 1, 0, 0, 1};
+    int i130[] = {0, 0, 0, 1, 0, 1, 0};
+    int i131[] = {0, 0, 0, 1, 0, 1, 1};
+    int i132[] = {0, 0, 0, 1, 1, 0, 0};
+    int i133[] = {0, 0, 0, 1, 1, 0, 1};
+    int i134[] = {0, 0, 0, 1, 1, 1, 0};
+    int i135[] = {0, 0, 0, 1, 1, 1, 1};
+    int i136[] = {0, 0, 1, 0, 0, 0, 0};
+    int i137[] = {0, 0, 1, 0, 0, 0, 1};
+    int i138[] = {0, 0, 1, 0, 0, 1, 0};
+    int i139[] = {0, 0, 1, 0, 0, 1, 1};
+    int i140[] = {0, 0, 1, 0, 1, 0, 0};
+    int i141[] = {0, 0, 1, 0, 1, 0, 1};
+    int i142[] = {0, 0, 1, 0, 1, 1, 0};
+    int i143[] = {0, 0, 1, 0, 1, 1, 1};
+    int i144[] = {0, 0, 1, 1, 0, 0, 0};
+    int i145[] = {0, 0, 1, 1, 0, 0, 1};
+    int i146[] = {0, 0, 1, 1, 0, 1, 0};
+    int i147[] = {0, 0, 1, 1, 0, 1, 1};
+    int i148[] = {0, 0, 1, 1, 1, 0, 0};
+    int i149[] = {0, 0, 1, 1, 1, 0, 1};
+    int i150[] = {0, 0, 1, 1, 1, 1, 0};
+    int i151[] = {0, 0, 1, 1, 1, 1, 1};
+    int i152[] = {0, 1, 0, 0, 0, 0, 0};
+    int i153[] = {0, 1, 0, 0, 0, 0, 1};
+    int i154[] = {0, 1, 0, 0, 0, 1, 0};
+    int i155[] = {0, 1, 0, 0, 0, 1, 1};
+    int i156[] = {0, 1, 0, 0, 1, 0, 0};
+    int i157[] = {0, 1, 0, 0, 1, 0, 1};
+    int i158[] = {0, 1, 0, 0, 1, 1, 0};
+    int i159[] = {0, 1, 0, 0, 1, 1, 1};
+    int i160[] = {0, 1, 0, 1, 0, 0, 0};
+    int i161[] = {0, 1, 0, 1, 0, 0, 1};
+    int i162[] = {0, 1, 0, 1, 0, 1, 0};
+    int i163[] = {0, 1, 0, 1, 0, 1, 1};
+    int i164[] = {0, 1, 0, 1, 1, 0, 0};
+    int i165[] = {0, 1, 0, 1, 1, 0, 1};
+    int i166[] = {0, 1, 0, 1, 1, 1, 0};
+    int i167[] = {0, 1, 0, 1, 1, 1, 1};
+    int i168[] = {0, 1, 1, 0, 0, 0, 0};
+    int i169[] = {0, 1, 1, 0, 0, 0, 1};
+    int i170[] = {0, 1, 1, 0, 0, 1, 0};
+    int i171[] = {0, 1, 1, 0, 0, 1, 1};
+    int i172[] = {0, 1, 1, 0, 1, 0, 0};
+    int i173[] = {0, 1, 1, 0, 1, 0, 1};
+    int i174[] = {0, 1, 1, 0, 1, 1, 0};
+    int i175[] = {0, 1, 1, 0, 1, 1, 1};
+    int i176[] = {0, 1, 1, 1, 0, 0, 0};
+    int i177[] = {0, 1, 1, 1, 0, 0, 1};
+    int i178[] = {0, 1, 1, 1, 0, 1, 0};
+    int i179[] = {0, 1, 1, 1, 0, 1, 1};
+    int i180[] = {0, 1, 1, 1, 1, 0, 0};
+    int i181[] = {0, 1, 1, 1, 1, 0, 1};
+    int i182[] = {0, 1, 1, 1, 1, 1, 0};
+    int i183[] = {0, 1, 1, 1, 1, 1, 1};
+    int i184[] = {1, 0, 0, 0, 0, 0, 0};
+    int i185[] = {1, 0, 0, 0, 0, 0, 1};
+    int i186[] = {1, 0, 0, 0, 0, 1, 0};
+    int i187[] = {1, 0, 0, 0, 0, 1, 1};
+    int i188[] = {1, 0, 0, 0, 1, 0, 0};
+    int i189[] = {1, 0, 0, 0, 1, 0, 1};
+    int i190[] = {1, 0, 0, 0, 1, 1, 0};
+    int i191[] = {1, 0, 0, 0, 1, 1, 1};
+    int i192[] = {1, 0, 0, 1, 0, 0, 0};
+    int i193[] = {1, 0, 0, 1, 0, 0, 1};
+    int i194[] = {1, 0, 0, 1, 0, 1, 0};
+    int i195[] = {1, 0, 0, 1, 0, 1, 1};
+    int i196[] = {1, 0, 0, 1, 1, 0, 0};
+    int i197[] = {1, 0, 0, 1, 1, 0, 1};
+    int i198[] = {1, 0, 0, 1, 1, 1, 0};
+    int i199[] = {1, 0, 0, 1, 1, 1, 1};
+    int i200[] = {1, 0, 1, 0, 0, 0, 0};
+    int i201[] = {1, 0, 1, 0, 0, 0, 1};
+    int i202[] = {1, 0, 1, 0, 0, 1, 0};
+    int i203[] = {1, 0, 1, 0, 0, 1, 1};
+    int i204[] = {1, 0, 1, 0, 1, 0, 0};
+    int i205[] = {1, 0, 1, 0, 1, 0, 1};
+    int i206[] = {1, 0, 1, 0, 1, 1, 0};
+    int i207[] = {1, 0, 1, 0, 1, 1, 1};
+    int i208[] = {1, 0, 1, 1, 0, 0, 0};
+    int i209[] = {1, 0, 1, 1, 0, 0, 1};
+    int i210[] = {1, 0, 1, 1, 0, 1, 0};
+    int i211[] = {1, 0, 1, 1, 0, 1, 1};
+    int i212[] = {1, 0, 1, 1, 1, 0, 0};
+    int i213[] = {1, 0, 1, 1, 1, 0, 1};
+    int i214[] = {1, 0, 1, 1, 1, 1, 0};
+    int i215[] = {1, 0, 1, 1, 1, 1, 1};
+    int i216[] = {1, 1, 0, 0, 0, 0, 0};
+    int i217[] = {1, 1, 0, 0, 0, 0, 1};
+    int i218[] = {1, 1, 0, 0, 0, 1, 0};
+    int i219[] = {1, 1, 0, 0, 0, 1, 1};
+    int i220[] = {1, 1, 0, 0, 1, 0, 0};
+    int i221[] = {1, 1, 0, 0, 1, 0, 1};
+    int i222[] = {1, 1, 0, 0, 1, 1, 0};
+    int i223[] = {1, 1, 0, 0, 1, 1, 1};
+    int i224[] = {1, 1, 0, 1, 0, 0, 0};
+    int i225[] = {1, 1, 0, 1, 0, 0, 1};
+    int i226[] = {1, 1, 0, 1, 0, 1, 0};
+    int i227[] = {1, 1, 0, 1, 0, 1, 1};
+    int i228[] = {1, 1, 0, 1, 1, 0, 0};
+    int i229[] = {1, 1, 0, 1, 1, 0, 1};
+    int i230[] = {1, 1, 0, 1, 1, 1, 0};
+    int i231[] = {1, 1, 0, 1, 1, 1, 1};
+    int i232[] = {1, 1, 1, 0, 0, 0, 0};
+    int i233[] = {1, 1, 1, 0, 0, 0, 1};
+    int i234[] = {1, 1, 1, 0, 0, 1, 0};
+    int i235[] = {1, 1, 1, 0, 0, 1, 1};
+    int i236[] = {1, 1, 1, 0, 1, 0, 0};
+    int i237[] = {1, 1, 1, 0, 1, 0, 1};
+    int i238[] = {1, 1, 1, 0, 1, 1, 0};
+    int i239[] = {1, 1, 1, 0, 1, 1, 1};
+    int i240[] = {1, 1, 1, 1, 0, 0, 0};
+    int i241[] = {1, 1, 1, 1, 0, 0, 1};
+    int i242[] = {1, 1, 1, 1, 0, 1, 0};
+    int i243[] = {1, 1, 1, 1, 0, 1, 1};
+    int i244[] = {1, 1, 1, 1, 1, 0, 0};
+    int i245[] = {1, 1, 1, 1, 1, 0, 1};
+    int i246[] = {1, 1, 1, 1, 1, 1, 0};
+    assert(std::is_heap_until(i120, i120+7) == i120+7);
+    assert(std::is_heap_until(i121, i121+7) == i121+6);
+    assert(std::is_heap_until(i122, i122+7) == i122+5);
+    assert(std::is_heap_until(i123, i123+7) == i123+5);
+    assert(std::is_heap_until(i124, i124+7) == i124+4);
+    assert(std::is_heap_until(i125, i125+7) == i125+4);
+    assert(std::is_heap_until(i126, i126+7) == i126+4);
+    assert(std::is_heap_until(i127, i127+7) == i127+4);
+    assert(std::is_heap_until(i128, i128+7) == i128+3);
+    assert(std::is_heap_until(i129, i129+7) == i129+3);
+    assert(std::is_heap_until(i130, i130+7) == i130+3);
+    assert(std::is_heap_until(i131, i131+7) == i131+3);
+    assert(std::is_heap_until(i132, i132+7) == i132+3);
+    assert(std::is_heap_until(i133, i133+7) == i133+3);
+    assert(std::is_heap_until(i134, i134+7) == i134+3);
+    assert(std::is_heap_until(i135, i135+7) == i135+3);
+    assert(std::is_heap_until(i136, i136+7) == i136+2);
+    assert(std::is_heap_until(i137, i137+7) == i137+2);
+    assert(std::is_heap_until(i138, i138+7) == i138+2);
+    assert(std::is_heap_until(i139, i139+7) == i139+2);
+    assert(std::is_heap_until(i140, i140+7) == i140+2);
+    assert(std::is_heap_until(i141, i141+7) == i141+2);
+    assert(std::is_heap_until(i142, i142+7) == i142+2);
+    assert(std::is_heap_until(i143, i143+7) == i143+2);
+    assert(std::is_heap_until(i144, i144+7) == i144+2);
+    assert(std::is_heap_until(i145, i145+7) == i145+2);
+    assert(std::is_heap_until(i146, i146+7) == i146+2);
+    assert(std::is_heap_until(i147, i147+7) == i147+2);
+    assert(std::is_heap_until(i148, i148+7) == i148+2);
+    assert(std::is_heap_until(i149, i149+7) == i149+2);
+    assert(std::is_heap_until(i150, i150+7) == i150+2);
+    assert(std::is_heap_until(i151, i151+7) == i151+2);
+    assert(std::is_heap_until(i152, i152+7) == i152+1);
+    assert(std::is_heap_until(i153, i153+7) == i153+1);
+    assert(std::is_heap_until(i154, i154+7) == i154+1);
+    assert(std::is_heap_until(i155, i155+7) == i155+1);
+    assert(std::is_heap_until(i156, i156+7) == i156+1);
+    assert(std::is_heap_until(i157, i157+7) == i157+1);
+    assert(std::is_heap_until(i158, i158+7) == i158+1);
+    assert(std::is_heap_until(i159, i159+7) == i159+1);
+    assert(std::is_heap_until(i160, i160+7) == i160+1);
+    assert(std::is_heap_until(i161, i161+7) == i161+1);
+    assert(std::is_heap_until(i162, i162+7) == i162+1);
+    assert(std::is_heap_until(i163, i163+7) == i163+1);
+    assert(std::is_heap_until(i164, i164+7) == i164+1);
+    assert(std::is_heap_until(i165, i165+7) == i165+1);
+    assert(std::is_heap_until(i166, i166+7) == i166+1);
+    assert(std::is_heap_until(i167, i167+7) == i167+1);
+    assert(std::is_heap_until(i168, i168+7) == i168+1);
+    assert(std::is_heap_until(i169, i169+7) == i169+1);
+    assert(std::is_heap_until(i170, i170+7) == i170+1);
+    assert(std::is_heap_until(i171, i171+7) == i171+1);
+    assert(std::is_heap_until(i172, i172+7) == i172+1);
+    assert(std::is_heap_until(i173, i173+7) == i173+1);
+    assert(std::is_heap_until(i174, i174+7) == i174+1);
+    assert(std::is_heap_until(i175, i175+7) == i175+1);
+    assert(std::is_heap_until(i176, i176+7) == i176+1);
+    assert(std::is_heap_until(i177, i177+7) == i177+1);
+    assert(std::is_heap_until(i178, i178+7) == i178+1);
+    assert(std::is_heap_until(i179, i179+7) == i179+1);
+    assert(std::is_heap_until(i180, i180+7) == i180+1);
+    assert(std::is_heap_until(i181, i181+7) == i181+1);
+    assert(std::is_heap_until(i182, i182+7) == i182+1);
+    assert(std::is_heap_until(i183, i183+7) == i183+1);
+    assert(std::is_heap_until(i184, i184+7) == i184+7);
+    assert(std::is_heap_until(i185, i185+7) == i185+6);
+    assert(std::is_heap_until(i186, i186+7) == i186+5);
+    assert(std::is_heap_until(i187, i187+7) == i187+5);
+    assert(std::is_heap_until(i188, i188+7) == i188+4);
+    assert(std::is_heap_until(i189, i189+7) == i189+4);
+    assert(std::is_heap_until(i190, i190+7) == i190+4);
+    assert(std::is_heap_until(i191, i191+7) == i191+4);
+    assert(std::is_heap_until(i192, i192+7) == i192+3);
+    assert(std::is_heap_until(i193, i193+7) == i193+3);
+    assert(std::is_heap_until(i194, i194+7) == i194+3);
+    assert(std::is_heap_until(i195, i195+7) == i195+3);
+    assert(std::is_heap_until(i196, i196+7) == i196+3);
+    assert(std::is_heap_until(i197, i197+7) == i197+3);
+    assert(std::is_heap_until(i198, i198+7) == i198+3);
+    assert(std::is_heap_until(i199, i199+7) == i199+3);
+    assert(std::is_heap_until(i200, i200+7) == i200+7);
+    assert(std::is_heap_until(i201, i201+7) == i201+7);
+    assert(std::is_heap_until(i202, i202+7) == i202+7);
+    assert(std::is_heap_until(i203, i203+7) == i203+7);
+    assert(std::is_heap_until(i204, i204+7) == i204+4);
+    assert(std::is_heap_until(i205, i205+7) == i205+4);
+    assert(std::is_heap_until(i206, i206+7) == i206+4);
+    assert(std::is_heap_until(i207, i207+7) == i207+4);
+    assert(std::is_heap_until(i208, i208+7) == i208+3);
+    assert(std::is_heap_until(i209, i209+7) == i209+3);
+    assert(std::is_heap_until(i210, i210+7) == i210+3);
+    assert(std::is_heap_until(i211, i211+7) == i211+3);
+    assert(std::is_heap_until(i212, i212+7) == i212+3);
+    assert(std::is_heap_until(i213, i213+7) == i213+3);
+    assert(std::is_heap_until(i214, i214+7) == i214+3);
+    assert(std::is_heap_until(i215, i215+7) == i215+3);
+    assert(std::is_heap_until(i216, i216+7) == i216+7);
+    assert(std::is_heap_until(i217, i217+7) == i217+6);
+    assert(std::is_heap_until(i218, i218+7) == i218+5);
+    assert(std::is_heap_until(i219, i219+7) == i219+5);
+    assert(std::is_heap_until(i220, i220+7) == i220+7);
+    assert(std::is_heap_until(i221, i221+7) == i221+6);
+    assert(std::is_heap_until(i222, i222+7) == i222+5);
+    assert(std::is_heap_until(i223, i223+7) == i223+5);
+    assert(std::is_heap_until(i224, i224+7) == i224+7);
+    assert(std::is_heap_until(i225, i225+7) == i225+6);
+    assert(std::is_heap_until(i226, i226+7) == i226+5);
+    assert(std::is_heap_until(i227, i227+7) == i227+5);
+    assert(std::is_heap_until(i228, i228+7) == i228+7);
+    assert(std::is_heap_until(i229, i229+7) == i229+6);
+    assert(std::is_heap_until(i230, i230+7) == i230+5);
+    assert(std::is_heap_until(i231, i231+7) == i231+5);
+    assert(std::is_heap_until(i232, i232+7) == i232+7);
+    assert(std::is_heap_until(i233, i233+7) == i233+7);
+    assert(std::is_heap_until(i234, i234+7) == i234+7);
+    assert(std::is_heap_until(i235, i235+7) == i235+7);
+    assert(std::is_heap_until(i236, i236+7) == i236+7);
+    assert(std::is_heap_until(i237, i237+7) == i237+7);
+    assert(std::is_heap_until(i238, i238+7) == i238+7);
+    assert(std::is_heap_until(i239, i239+7) == i239+7);
+    assert(std::is_heap_until(i240, i240+7) == i240+7);
+    assert(std::is_heap_until(i241, i241+7) == i241+7);
+    assert(std::is_heap_until(i242, i242+7) == i242+7);
+    assert(std::is_heap_until(i243, i243+7) == i243+7);
+    assert(std::is_heap_until(i244, i244+7) == i244+7);
+    assert(std::is_heap_until(i245, i245+7) == i245+7);
+    assert(std::is_heap_until(i246, i246+7) == i246+7);
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_until_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_until_comp.pass.cpp
new file mode 100644
index 0000000..1cec544
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/is_heap_until_comp.pass.cpp
@@ -0,0 +1,543 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   constexpr bool   // constexpr after C++17
+//   is_heap_until(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 0, 0, 0};
+    int ib[] = {0, 1, 1, 0};
+    return    (std::is_heap_until(std::begin(ia), std::end(ia), std::greater<int>()) == ia+1)
+           && (std::is_heap_until(std::begin(ib), std::end(ib), std::greater<int>()) == ib+3);
+    }
+#endif
+
+void test()
+{
+    typedef random_access_iterator<int *> RI;
+    int i1[] = {0, 0};
+    assert(std::is_heap_until(i1, i1, std::greater<int>()) == i1);
+    assert(std::is_heap_until(i1, i1+1, std::greater<int>()) == i1+1);
+    assert(std::is_heap_until(RI(i1), RI(i1), std::greater<int>()) == RI(i1));
+    assert(std::is_heap_until(RI(i1), RI(i1+1), std::greater<int>()) == RI(i1+1));
+
+    int i2[] = {0, 1};
+    int i3[] = {1, 0};
+    assert(std::is_heap_until(i1, i1+2, std::greater<int>()) == i1+2);
+    assert(std::is_heap_until(i2, i2+2, std::greater<int>()) == i2+2);
+    assert(std::is_heap_until(i3, i3+2, std::greater<int>()) == i3+1);
+    int i4[] = {0, 0, 0};
+    int i5[] = {0, 0, 1};
+    int i6[] = {0, 1, 0};
+    int i7[] = {0, 1, 1};
+    int i8[] = {1, 0, 0};
+    int i9[] = {1, 0, 1};
+    int i10[] = {1, 1, 0};
+    assert(std::is_heap_until(i4, i4+3, std::greater<int>()) == i4+3);
+    assert(std::is_heap_until(i5, i5+3, std::greater<int>()) == i5+3);
+    assert(std::is_heap_until(i6, i6+3, std::greater<int>()) == i6+3);
+    assert(std::is_heap_until(i7, i7+3, std::greater<int>()) == i7+3);
+    assert(std::is_heap_until(i8, i8+3, std::greater<int>()) == i8+1);
+    assert(std::is_heap_until(i9, i9+3, std::greater<int>()) == i9+1);
+    assert(std::is_heap_until(i10, i10+3, std::greater<int>()) == i10+2);
+    int i11[] = {0, 0, 0, 0};
+    int i12[] = {0, 0, 0, 1};
+    int i13[] = {0, 0, 1, 0};
+    int i14[] = {0, 0, 1, 1};
+    int i15[] = {0, 1, 0, 0};
+    int i16[] = {0, 1, 0, 1};
+    int i17[] = {0, 1, 1, 0};
+    int i18[] = {0, 1, 1, 1};
+    int i19[] = {1, 0, 0, 0};
+    int i20[] = {1, 0, 0, 1};
+    int i21[] = {1, 0, 1, 0};
+    int i22[] = {1, 0, 1, 1};
+    int i23[] = {1, 1, 0, 0};
+    int i24[] = {1, 1, 0, 1};
+    int i25[] = {1, 1, 1, 0};
+    assert(std::is_heap_until(i11, i11+4, std::greater<int>()) == i11+4);
+    assert(std::is_heap_until(i12, i12+4, std::greater<int>()) == i12+4);
+    assert(std::is_heap_until(i13, i13+4, std::greater<int>()) == i13+4);
+    assert(std::is_heap_until(i14, i14+4, std::greater<int>()) == i14+4);
+    assert(std::is_heap_until(i15, i15+4, std::greater<int>()) == i15+3);
+    assert(std::is_heap_until(i16, i16+4, std::greater<int>()) == i16+4);
+    assert(std::is_heap_until(i17, i17+4, std::greater<int>()) == i17+3);
+    assert(std::is_heap_until(i18, i18+4, std::greater<int>()) == i18+4);
+    assert(std::is_heap_until(i19, i19+4, std::greater<int>()) == i19+1);
+    assert(std::is_heap_until(i20, i20+4, std::greater<int>()) == i20+1);
+    assert(std::is_heap_until(i21, i21+4, std::greater<int>()) == i21+1);
+    assert(std::is_heap_until(i22, i22+4, std::greater<int>()) == i22+1);
+    assert(std::is_heap_until(i23, i23+4, std::greater<int>()) == i23+2);
+    assert(std::is_heap_until(i24, i24+4, std::greater<int>()) == i24+2);
+    assert(std::is_heap_until(i25, i25+4, std::greater<int>()) == i25+3);
+    int i26[] = {0, 0, 0, 0, 0};
+    int i27[] = {0, 0, 0, 0, 1};
+    int i28[] = {0, 0, 0, 1, 0};
+    int i29[] = {0, 0, 0, 1, 1};
+    int i30[] = {0, 0, 1, 0, 0};
+    int i31[] = {0, 0, 1, 0, 1};
+    int i32[] = {0, 0, 1, 1, 0};
+    int i33[] = {0, 0, 1, 1, 1};
+    int i34[] = {0, 1, 0, 0, 0};
+    int i35[] = {0, 1, 0, 0, 1};
+    int i36[] = {0, 1, 0, 1, 0};
+    int i37[] = {0, 1, 0, 1, 1};
+    int i38[] = {0, 1, 1, 0, 0};
+    int i39[] = {0, 1, 1, 0, 1};
+    int i40[] = {0, 1, 1, 1, 0};
+    int i41[] = {0, 1, 1, 1, 1};
+    int i42[] = {1, 0, 0, 0, 0};
+    int i43[] = {1, 0, 0, 0, 1};
+    int i44[] = {1, 0, 0, 1, 0};
+    int i45[] = {1, 0, 0, 1, 1};
+    int i46[] = {1, 0, 1, 0, 0};
+    int i47[] = {1, 0, 1, 0, 1};
+    int i48[] = {1, 0, 1, 1, 0};
+    int i49[] = {1, 0, 1, 1, 1};
+    int i50[] = {1, 1, 0, 0, 0};
+    int i51[] = {1, 1, 0, 0, 1};
+    int i52[] = {1, 1, 0, 1, 0};
+    int i53[] = {1, 1, 0, 1, 1};
+    int i54[] = {1, 1, 1, 0, 0};
+    int i55[] = {1, 1, 1, 0, 1};
+    int i56[] = {1, 1, 1, 1, 0};
+    assert(std::is_heap_until(i26, i26+5, std::greater<int>()) == i26+5);
+    assert(std::is_heap_until(i27, i27+5, std::greater<int>()) == i27+5);
+    assert(std::is_heap_until(i28, i28+5, std::greater<int>()) == i28+5);
+    assert(std::is_heap_until(i29, i29+5, std::greater<int>()) == i29+5);
+    assert(std::is_heap_until(i30, i30+5, std::greater<int>()) == i30+5);
+    assert(std::is_heap_until(i31, i31+5, std::greater<int>()) == i31+5);
+    assert(std::is_heap_until(i32, i32+5, std::greater<int>()) == i32+5);
+    assert(std::is_heap_until(i33, i33+5, std::greater<int>()) == i33+5);
+    assert(std::is_heap_until(i34, i34+5, std::greater<int>()) == i34+3);
+    assert(std::is_heap_until(i35, i35+5, std::greater<int>()) == i35+3);
+    assert(std::is_heap_until(i36, i36+5, std::greater<int>()) == i36+4);
+    assert(std::is_heap_until(i37, i37+5, std::greater<int>()) == i37+5);
+    assert(std::is_heap_until(i38, i38+5, std::greater<int>()) == i38+3);
+    assert(std::is_heap_until(i39, i39+5, std::greater<int>()) == i39+3);
+    assert(std::is_heap_until(i40, i40+5, std::greater<int>()) == i40+4);
+    assert(std::is_heap_until(i41, i41+5, std::greater<int>()) == i41+5);
+    assert(std::is_heap_until(i42, i42+5, std::greater<int>()) == i42+1);
+    assert(std::is_heap_until(i43, i43+5, std::greater<int>()) == i43+1);
+    assert(std::is_heap_until(i44, i44+5, std::greater<int>()) == i44+1);
+    assert(std::is_heap_until(i45, i45+5, std::greater<int>()) == i45+1);
+    assert(std::is_heap_until(i46, i46+5, std::greater<int>()) == i46+1);
+    assert(std::is_heap_until(i47, i47+5, std::greater<int>()) == i47+1);
+    assert(std::is_heap_until(i48, i48+5, std::greater<int>()) == i48+1);
+    assert(std::is_heap_until(i49, i49+5, std::greater<int>()) == i49+1);
+    assert(std::is_heap_until(i50, i50+5, std::greater<int>()) == i50+2);
+    assert(std::is_heap_until(i51, i51+5, std::greater<int>()) == i51+2);
+    assert(std::is_heap_until(i52, i52+5, std::greater<int>()) == i52+2);
+    assert(std::is_heap_until(i53, i53+5, std::greater<int>()) == i53+2);
+    assert(std::is_heap_until(i54, i54+5, std::greater<int>()) == i54+3);
+    assert(std::is_heap_until(i55, i55+5, std::greater<int>()) == i55+3);
+    assert(std::is_heap_until(i56, i56+5, std::greater<int>()) == i56+4);
+    int i57[] = {0, 0, 0, 0, 0, 0};
+    int i58[] = {0, 0, 0, 0, 0, 1};
+    int i59[] = {0, 0, 0, 0, 1, 0};
+    int i60[] = {0, 0, 0, 0, 1, 1};
+    int i61[] = {0, 0, 0, 1, 0, 0};
+    int i62[] = {0, 0, 0, 1, 0, 1};
+    int i63[] = {0, 0, 0, 1, 1, 0};
+    int i64[] = {0, 0, 0, 1, 1, 1};
+    int i65[] = {0, 0, 1, 0, 0, 0};
+    int i66[] = {0, 0, 1, 0, 0, 1};
+    int i67[] = {0, 0, 1, 0, 1, 0};
+    int i68[] = {0, 0, 1, 0, 1, 1};
+    int i69[] = {0, 0, 1, 1, 0, 0};
+    int i70[] = {0, 0, 1, 1, 0, 1};
+    int i71[] = {0, 0, 1, 1, 1, 0};
+    int i72[] = {0, 0, 1, 1, 1, 1};
+    int i73[] = {0, 1, 0, 0, 0, 0};
+    int i74[] = {0, 1, 0, 0, 0, 1};
+    int i75[] = {0, 1, 0, 0, 1, 0};
+    int i76[] = {0, 1, 0, 0, 1, 1};
+    int i77[] = {0, 1, 0, 1, 0, 0};
+    int i78[] = {0, 1, 0, 1, 0, 1};
+    int i79[] = {0, 1, 0, 1, 1, 0};
+    int i80[] = {0, 1, 0, 1, 1, 1};
+    int i81[] = {0, 1, 1, 0, 0, 0};
+    int i82[] = {0, 1, 1, 0, 0, 1};
+    int i83[] = {0, 1, 1, 0, 1, 0};
+    int i84[] = {0, 1, 1, 0, 1, 1};
+    int i85[] = {0, 1, 1, 1, 0, 0};
+    int i86[] = {0, 1, 1, 1, 0, 1};
+    int i87[] = {0, 1, 1, 1, 1, 0};
+    int i88[] = {0, 1, 1, 1, 1, 1};
+    int i89[] = {1, 0, 0, 0, 0, 0};
+    int i90[] = {1, 0, 0, 0, 0, 1};
+    int i91[] = {1, 0, 0, 0, 1, 0};
+    int i92[] = {1, 0, 0, 0, 1, 1};
+    int i93[] = {1, 0, 0, 1, 0, 0};
+    int i94[] = {1, 0, 0, 1, 0, 1};
+    int i95[] = {1, 0, 0, 1, 1, 0};
+    int i96[] = {1, 0, 0, 1, 1, 1};
+    int i97[] = {1, 0, 1, 0, 0, 0};
+    int i98[] = {1, 0, 1, 0, 0, 1};
+    int i99[] = {1, 0, 1, 0, 1, 0};
+    int i100[] = {1, 0, 1, 0, 1, 1};
+    int i101[] = {1, 0, 1, 1, 0, 0};
+    int i102[] = {1, 0, 1, 1, 0, 1};
+    int i103[] = {1, 0, 1, 1, 1, 0};
+    int i104[] = {1, 0, 1, 1, 1, 1};
+    int i105[] = {1, 1, 0, 0, 0, 0};
+    int i106[] = {1, 1, 0, 0, 0, 1};
+    int i107[] = {1, 1, 0, 0, 1, 0};
+    int i108[] = {1, 1, 0, 0, 1, 1};
+    int i109[] = {1, 1, 0, 1, 0, 0};
+    int i110[] = {1, 1, 0, 1, 0, 1};
+    int i111[] = {1, 1, 0, 1, 1, 0};
+    int i112[] = {1, 1, 0, 1, 1, 1};
+    int i113[] = {1, 1, 1, 0, 0, 0};
+    int i114[] = {1, 1, 1, 0, 0, 1};
+    int i115[] = {1, 1, 1, 0, 1, 0};
+    int i116[] = {1, 1, 1, 0, 1, 1};
+    int i117[] = {1, 1, 1, 1, 0, 0};
+    int i118[] = {1, 1, 1, 1, 0, 1};
+    int i119[] = {1, 1, 1, 1, 1, 0};
+    assert(std::is_heap_until(i57, i57+6, std::greater<int>()) == i57+6);
+    assert(std::is_heap_until(i58, i58+6, std::greater<int>()) == i58+6);
+    assert(std::is_heap_until(i59, i59+6, std::greater<int>()) == i59+6);
+    assert(std::is_heap_until(i60, i60+6, std::greater<int>()) == i60+6);
+    assert(std::is_heap_until(i61, i61+6, std::greater<int>()) == i61+6);
+    assert(std::is_heap_until(i62, i62+6, std::greater<int>()) == i62+6);
+    assert(std::is_heap_until(i63, i63+6, std::greater<int>()) == i63+6);
+    assert(std::is_heap_until(i64, i64+6, std::greater<int>()) == i64+6);
+    assert(std::is_heap_until(i65, i65+6, std::greater<int>()) == i65+5);
+    assert(std::is_heap_until(i66, i66+6, std::greater<int>()) == i66+6);
+    assert(std::is_heap_until(i67, i67+6, std::greater<int>()) == i67+5);
+    assert(std::is_heap_until(i68, i68+6, std::greater<int>()) == i68+6);
+    assert(std::is_heap_until(i69, i69+6, std::greater<int>()) == i69+5);
+    assert(std::is_heap_until(i70, i70+6, std::greater<int>()) == i70+6);
+    assert(std::is_heap_until(i71, i71+6, std::greater<int>()) == i71+5);
+    assert(std::is_heap_until(i72, i72+6, std::greater<int>()) == i72+6);
+    assert(std::is_heap_until(i73, i73+6, std::greater<int>()) == i73+3);
+    assert(std::is_heap_until(i74, i74+6, std::greater<int>()) == i74+3);
+    assert(std::is_heap_until(i75, i75+6, std::greater<int>()) == i75+3);
+    assert(std::is_heap_until(i76, i76+6, std::greater<int>()) == i76+3);
+    assert(std::is_heap_until(i77, i77+6, std::greater<int>()) == i77+4);
+    assert(std::is_heap_until(i78, i78+6, std::greater<int>()) == i78+4);
+    assert(std::is_heap_until(i79, i79+6, std::greater<int>()) == i79+6);
+    assert(std::is_heap_until(i80, i80+6, std::greater<int>()) == i80+6);
+    assert(std::is_heap_until(i81, i81+6, std::greater<int>()) == i81+3);
+    assert(std::is_heap_until(i82, i82+6, std::greater<int>()) == i82+3);
+    assert(std::is_heap_until(i83, i83+6, std::greater<int>()) == i83+3);
+    assert(std::is_heap_until(i84, i84+6, std::greater<int>()) == i84+3);
+    assert(std::is_heap_until(i85, i85+6, std::greater<int>()) == i85+4);
+    assert(std::is_heap_until(i86, i86+6, std::greater<int>()) == i86+4);
+    assert(std::is_heap_until(i87, i87+6, std::greater<int>()) == i87+5);
+    assert(std::is_heap_until(i88, i88+6, std::greater<int>()) == i88+6);
+    assert(std::is_heap_until(i89, i89+6, std::greater<int>()) == i89+1);
+    assert(std::is_heap_until(i90, i90+6, std::greater<int>()) == i90+1);
+    assert(std::is_heap_until(i91, i91+6, std::greater<int>()) == i91+1);
+    assert(std::is_heap_until(i92, i92+6, std::greater<int>()) == i92+1);
+    assert(std::is_heap_until(i93, i93+6, std::greater<int>()) == i93+1);
+    assert(std::is_heap_until(i94, i94+6, std::greater<int>()) == i94+1);
+    assert(std::is_heap_until(i95, i95+6, std::greater<int>()) == i95+1);
+    assert(std::is_heap_until(i96, i96+6, std::greater<int>()) == i96+1);
+    assert(std::is_heap_until(i97, i97+6, std::greater<int>()) == i97+1);
+    assert(std::is_heap_until(i98, i98+6, std::greater<int>()) == i98+1);
+    assert(std::is_heap_until(i99, i99+6, std::greater<int>()) == i99+1);
+    assert(std::is_heap_until(i100, i100+6, std::greater<int>()) == i100+1);
+    assert(std::is_heap_until(i101, i101+6, std::greater<int>()) == i101+1);
+    assert(std::is_heap_until(i102, i102+6, std::greater<int>()) == i102+1);
+    assert(std::is_heap_until(i103, i103+6, std::greater<int>()) == i103+1);
+    assert(std::is_heap_until(i104, i104+6, std::greater<int>()) == i104+1);
+    assert(std::is_heap_until(i105, i105+6, std::greater<int>()) == i105+2);
+    assert(std::is_heap_until(i106, i106+6, std::greater<int>()) == i106+2);
+    assert(std::is_heap_until(i107, i107+6, std::greater<int>()) == i107+2);
+    assert(std::is_heap_until(i108, i108+6, std::greater<int>()) == i108+2);
+    assert(std::is_heap_until(i109, i109+6, std::greater<int>()) == i109+2);
+    assert(std::is_heap_until(i110, i110+6, std::greater<int>()) == i110+2);
+    assert(std::is_heap_until(i111, i111+6, std::greater<int>()) == i111+2);
+    assert(std::is_heap_until(i112, i112+6, std::greater<int>()) == i112+2);
+    assert(std::is_heap_until(i113, i113+6, std::greater<int>()) == i113+3);
+    assert(std::is_heap_until(i114, i114+6, std::greater<int>()) == i114+3);
+    assert(std::is_heap_until(i115, i115+6, std::greater<int>()) == i115+3);
+    assert(std::is_heap_until(i116, i116+6, std::greater<int>()) == i116+3);
+    assert(std::is_heap_until(i117, i117+6, std::greater<int>()) == i117+4);
+    assert(std::is_heap_until(i118, i118+6, std::greater<int>()) == i118+4);
+    assert(std::is_heap_until(i119, i119+6, std::greater<int>()) == i119+5);
+    int i120[] = {0, 0, 0, 0, 0, 0, 0};
+    int i121[] = {0, 0, 0, 0, 0, 0, 1};
+    int i122[] = {0, 0, 0, 0, 0, 1, 0};
+    int i123[] = {0, 0, 0, 0, 0, 1, 1};
+    int i124[] = {0, 0, 0, 0, 1, 0, 0};
+    int i125[] = {0, 0, 0, 0, 1, 0, 1};
+    int i126[] = {0, 0, 0, 0, 1, 1, 0};
+    int i127[] = {0, 0, 0, 0, 1, 1, 1};
+    int i128[] = {0, 0, 0, 1, 0, 0, 0};
+    int i129[] = {0, 0, 0, 1, 0, 0, 1};
+    int i130[] = {0, 0, 0, 1, 0, 1, 0};
+    int i131[] = {0, 0, 0, 1, 0, 1, 1};
+    int i132[] = {0, 0, 0, 1, 1, 0, 0};
+    int i133[] = {0, 0, 0, 1, 1, 0, 1};
+    int i134[] = {0, 0, 0, 1, 1, 1, 0};
+    int i135[] = {0, 0, 0, 1, 1, 1, 1};
+    int i136[] = {0, 0, 1, 0, 0, 0, 0};
+    int i137[] = {0, 0, 1, 0, 0, 0, 1};
+    int i138[] = {0, 0, 1, 0, 0, 1, 0};
+    int i139[] = {0, 0, 1, 0, 0, 1, 1};
+    int i140[] = {0, 0, 1, 0, 1, 0, 0};
+    int i141[] = {0, 0, 1, 0, 1, 0, 1};
+    int i142[] = {0, 0, 1, 0, 1, 1, 0};
+    int i143[] = {0, 0, 1, 0, 1, 1, 1};
+    int i144[] = {0, 0, 1, 1, 0, 0, 0};
+    int i145[] = {0, 0, 1, 1, 0, 0, 1};
+    int i146[] = {0, 0, 1, 1, 0, 1, 0};
+    int i147[] = {0, 0, 1, 1, 0, 1, 1};
+    int i148[] = {0, 0, 1, 1, 1, 0, 0};
+    int i149[] = {0, 0, 1, 1, 1, 0, 1};
+    int i150[] = {0, 0, 1, 1, 1, 1, 0};
+    int i151[] = {0, 0, 1, 1, 1, 1, 1};
+    int i152[] = {0, 1, 0, 0, 0, 0, 0};
+    int i153[] = {0, 1, 0, 0, 0, 0, 1};
+    int i154[] = {0, 1, 0, 0, 0, 1, 0};
+    int i155[] = {0, 1, 0, 0, 0, 1, 1};
+    int i156[] = {0, 1, 0, 0, 1, 0, 0};
+    int i157[] = {0, 1, 0, 0, 1, 0, 1};
+    int i158[] = {0, 1, 0, 0, 1, 1, 0};
+    int i159[] = {0, 1, 0, 0, 1, 1, 1};
+    int i160[] = {0, 1, 0, 1, 0, 0, 0};
+    int i161[] = {0, 1, 0, 1, 0, 0, 1};
+    int i162[] = {0, 1, 0, 1, 0, 1, 0};
+    int i163[] = {0, 1, 0, 1, 0, 1, 1};
+    int i164[] = {0, 1, 0, 1, 1, 0, 0};
+    int i165[] = {0, 1, 0, 1, 1, 0, 1};
+    int i166[] = {0, 1, 0, 1, 1, 1, 0};
+    int i167[] = {0, 1, 0, 1, 1, 1, 1};
+    int i168[] = {0, 1, 1, 0, 0, 0, 0};
+    int i169[] = {0, 1, 1, 0, 0, 0, 1};
+    int i170[] = {0, 1, 1, 0, 0, 1, 0};
+    int i171[] = {0, 1, 1, 0, 0, 1, 1};
+    int i172[] = {0, 1, 1, 0, 1, 0, 0};
+    int i173[] = {0, 1, 1, 0, 1, 0, 1};
+    int i174[] = {0, 1, 1, 0, 1, 1, 0};
+    int i175[] = {0, 1, 1, 0, 1, 1, 1};
+    int i176[] = {0, 1, 1, 1, 0, 0, 0};
+    int i177[] = {0, 1, 1, 1, 0, 0, 1};
+    int i178[] = {0, 1, 1, 1, 0, 1, 0};
+    int i179[] = {0, 1, 1, 1, 0, 1, 1};
+    int i180[] = {0, 1, 1, 1, 1, 0, 0};
+    int i181[] = {0, 1, 1, 1, 1, 0, 1};
+    int i182[] = {0, 1, 1, 1, 1, 1, 0};
+    int i183[] = {0, 1, 1, 1, 1, 1, 1};
+    int i184[] = {1, 0, 0, 0, 0, 0, 0};
+    int i185[] = {1, 0, 0, 0, 0, 0, 1};
+    int i186[] = {1, 0, 0, 0, 0, 1, 0};
+    int i187[] = {1, 0, 0, 0, 0, 1, 1};
+    int i188[] = {1, 0, 0, 0, 1, 0, 0};
+    int i189[] = {1, 0, 0, 0, 1, 0, 1};
+    int i190[] = {1, 0, 0, 0, 1, 1, 0};
+    int i191[] = {1, 0, 0, 0, 1, 1, 1};
+    int i192[] = {1, 0, 0, 1, 0, 0, 0};
+    int i193[] = {1, 0, 0, 1, 0, 0, 1};
+    int i194[] = {1, 0, 0, 1, 0, 1, 0};
+    int i195[] = {1, 0, 0, 1, 0, 1, 1};
+    int i196[] = {1, 0, 0, 1, 1, 0, 0};
+    int i197[] = {1, 0, 0, 1, 1, 0, 1};
+    int i198[] = {1, 0, 0, 1, 1, 1, 0};
+    int i199[] = {1, 0, 0, 1, 1, 1, 1};
+    int i200[] = {1, 0, 1, 0, 0, 0, 0};
+    int i201[] = {1, 0, 1, 0, 0, 0, 1};
+    int i202[] = {1, 0, 1, 0, 0, 1, 0};
+    int i203[] = {1, 0, 1, 0, 0, 1, 1};
+    int i204[] = {1, 0, 1, 0, 1, 0, 0};
+    int i205[] = {1, 0, 1, 0, 1, 0, 1};
+    int i206[] = {1, 0, 1, 0, 1, 1, 0};
+    int i207[] = {1, 0, 1, 0, 1, 1, 1};
+    int i208[] = {1, 0, 1, 1, 0, 0, 0};
+    int i209[] = {1, 0, 1, 1, 0, 0, 1};
+    int i210[] = {1, 0, 1, 1, 0, 1, 0};
+    int i211[] = {1, 0, 1, 1, 0, 1, 1};
+    int i212[] = {1, 0, 1, 1, 1, 0, 0};
+    int i213[] = {1, 0, 1, 1, 1, 0, 1};
+    int i214[] = {1, 0, 1, 1, 1, 1, 0};
+    int i215[] = {1, 0, 1, 1, 1, 1, 1};
+    int i216[] = {1, 1, 0, 0, 0, 0, 0};
+    int i217[] = {1, 1, 0, 0, 0, 0, 1};
+    int i218[] = {1, 1, 0, 0, 0, 1, 0};
+    int i219[] = {1, 1, 0, 0, 0, 1, 1};
+    int i220[] = {1, 1, 0, 0, 1, 0, 0};
+    int i221[] = {1, 1, 0, 0, 1, 0, 1};
+    int i222[] = {1, 1, 0, 0, 1, 1, 0};
+    int i223[] = {1, 1, 0, 0, 1, 1, 1};
+    int i224[] = {1, 1, 0, 1, 0, 0, 0};
+    int i225[] = {1, 1, 0, 1, 0, 0, 1};
+    int i226[] = {1, 1, 0, 1, 0, 1, 0};
+    int i227[] = {1, 1, 0, 1, 0, 1, 1};
+    int i228[] = {1, 1, 0, 1, 1, 0, 0};
+    int i229[] = {1, 1, 0, 1, 1, 0, 1};
+    int i230[] = {1, 1, 0, 1, 1, 1, 0};
+    int i231[] = {1, 1, 0, 1, 1, 1, 1};
+    int i232[] = {1, 1, 1, 0, 0, 0, 0};
+    int i233[] = {1, 1, 1, 0, 0, 0, 1};
+    int i234[] = {1, 1, 1, 0, 0, 1, 0};
+    int i235[] = {1, 1, 1, 0, 0, 1, 1};
+    int i236[] = {1, 1, 1, 0, 1, 0, 0};
+    int i237[] = {1, 1, 1, 0, 1, 0, 1};
+    int i238[] = {1, 1, 1, 0, 1, 1, 0};
+    int i239[] = {1, 1, 1, 0, 1, 1, 1};
+    int i240[] = {1, 1, 1, 1, 0, 0, 0};
+    int i241[] = {1, 1, 1, 1, 0, 0, 1};
+    int i242[] = {1, 1, 1, 1, 0, 1, 0};
+    int i243[] = {1, 1, 1, 1, 0, 1, 1};
+    int i244[] = {1, 1, 1, 1, 1, 0, 0};
+    int i245[] = {1, 1, 1, 1, 1, 0, 1};
+    int i246[] = {1, 1, 1, 1, 1, 1, 0};
+    assert(std::is_heap_until(i120, i120+7, std::greater<int>()) == i120+7);
+    assert(std::is_heap_until(i121, i121+7, std::greater<int>()) == i121+7);
+    assert(std::is_heap_until(i122, i122+7, std::greater<int>()) == i122+7);
+    assert(std::is_heap_until(i123, i123+7, std::greater<int>()) == i123+7);
+    assert(std::is_heap_until(i124, i124+7, std::greater<int>()) == i124+7);
+    assert(std::is_heap_until(i125, i125+7, std::greater<int>()) == i125+7);
+    assert(std::is_heap_until(i126, i126+7, std::greater<int>()) == i126+7);
+    assert(std::is_heap_until(i127, i127+7, std::greater<int>()) == i127+7);
+    assert(std::is_heap_until(i128, i128+7, std::greater<int>()) == i128+7);
+    assert(std::is_heap_until(i129, i129+7, std::greater<int>()) == i129+7);
+    assert(std::is_heap_until(i130, i130+7, std::greater<int>()) == i130+7);
+    assert(std::is_heap_until(i131, i131+7, std::greater<int>()) == i131+7);
+    assert(std::is_heap_until(i132, i132+7, std::greater<int>()) == i132+7);
+    assert(std::is_heap_until(i133, i133+7, std::greater<int>()) == i133+7);
+    assert(std::is_heap_until(i134, i134+7, std::greater<int>()) == i134+7);
+    assert(std::is_heap_until(i135, i135+7, std::greater<int>()) == i135+7);
+    assert(std::is_heap_until(i136, i136+7, std::greater<int>()) == i136+5);
+    assert(std::is_heap_until(i137, i137+7, std::greater<int>()) == i137+5);
+    assert(std::is_heap_until(i138, i138+7, std::greater<int>()) == i138+6);
+    assert(std::is_heap_until(i139, i139+7, std::greater<int>()) == i139+7);
+    assert(std::is_heap_until(i140, i140+7, std::greater<int>()) == i140+5);
+    assert(std::is_heap_until(i141, i141+7, std::greater<int>()) == i141+5);
+    assert(std::is_heap_until(i142, i142+7, std::greater<int>()) == i142+6);
+    assert(std::is_heap_until(i143, i143+7, std::greater<int>()) == i143+7);
+    assert(std::is_heap_until(i144, i144+7, std::greater<int>()) == i144+5);
+    assert(std::is_heap_until(i145, i145+7, std::greater<int>()) == i145+5);
+    assert(std::is_heap_until(i146, i146+7, std::greater<int>()) == i146+6);
+    assert(std::is_heap_until(i147, i147+7, std::greater<int>()) == i147+7);
+    assert(std::is_heap_until(i148, i148+7, std::greater<int>()) == i148+5);
+    assert(std::is_heap_until(i149, i149+7, std::greater<int>()) == i149+5);
+    assert(std::is_heap_until(i150, i150+7, std::greater<int>()) == i150+6);
+    assert(std::is_heap_until(i151, i151+7, std::greater<int>()) == i151+7);
+    assert(std::is_heap_until(i152, i152+7, std::greater<int>()) == i152+3);
+    assert(std::is_heap_until(i153, i153+7, std::greater<int>()) == i153+3);
+    assert(std::is_heap_until(i154, i154+7, std::greater<int>()) == i154+3);
+    assert(std::is_heap_until(i155, i155+7, std::greater<int>()) == i155+3);
+    assert(std::is_heap_until(i156, i156+7, std::greater<int>()) == i156+3);
+    assert(std::is_heap_until(i157, i157+7, std::greater<int>()) == i157+3);
+    assert(std::is_heap_until(i158, i158+7, std::greater<int>()) == i158+3);
+    assert(std::is_heap_until(i159, i159+7, std::greater<int>()) == i159+3);
+    assert(std::is_heap_until(i160, i160+7, std::greater<int>()) == i160+4);
+    assert(std::is_heap_until(i161, i161+7, std::greater<int>()) == i161+4);
+    assert(std::is_heap_until(i162, i162+7, std::greater<int>()) == i162+4);
+    assert(std::is_heap_until(i163, i163+7, std::greater<int>()) == i163+4);
+    assert(std::is_heap_until(i164, i164+7, std::greater<int>()) == i164+7);
+    assert(std::is_heap_until(i165, i165+7, std::greater<int>()) == i165+7);
+    assert(std::is_heap_until(i166, i166+7, std::greater<int>()) == i166+7);
+    assert(std::is_heap_until(i167, i167+7, std::greater<int>()) == i167+7);
+    assert(std::is_heap_until(i168, i168+7, std::greater<int>()) == i168+3);
+    assert(std::is_heap_until(i169, i169+7, std::greater<int>()) == i169+3);
+    assert(std::is_heap_until(i170, i170+7, std::greater<int>()) == i170+3);
+    assert(std::is_heap_until(i171, i171+7, std::greater<int>()) == i171+3);
+    assert(std::is_heap_until(i172, i172+7, std::greater<int>()) == i172+3);
+    assert(std::is_heap_until(i173, i173+7, std::greater<int>()) == i173+3);
+    assert(std::is_heap_until(i174, i174+7, std::greater<int>()) == i174+3);
+    assert(std::is_heap_until(i175, i175+7, std::greater<int>()) == i175+3);
+    assert(std::is_heap_until(i176, i176+7, std::greater<int>()) == i176+4);
+    assert(std::is_heap_until(i177, i177+7, std::greater<int>()) == i177+4);
+    assert(std::is_heap_until(i178, i178+7, std::greater<int>()) == i178+4);
+    assert(std::is_heap_until(i179, i179+7, std::greater<int>()) == i179+4);
+    assert(std::is_heap_until(i180, i180+7, std::greater<int>()) == i180+5);
+    assert(std::is_heap_until(i181, i181+7, std::greater<int>()) == i181+5);
+    assert(std::is_heap_until(i182, i182+7, std::greater<int>()) == i182+6);
+    assert(std::is_heap_until(i183, i183+7, std::greater<int>()) == i183+7);
+    assert(std::is_heap_until(i184, i184+7, std::greater<int>()) == i184+1);
+    assert(std::is_heap_until(i185, i185+7, std::greater<int>()) == i185+1);
+    assert(std::is_heap_until(i186, i186+7, std::greater<int>()) == i186+1);
+    assert(std::is_heap_until(i187, i187+7, std::greater<int>()) == i187+1);
+    assert(std::is_heap_until(i188, i188+7, std::greater<int>()) == i188+1);
+    assert(std::is_heap_until(i189, i189+7, std::greater<int>()) == i189+1);
+    assert(std::is_heap_until(i190, i190+7, std::greater<int>()) == i190+1);
+    assert(std::is_heap_until(i191, i191+7, std::greater<int>()) == i191+1);
+    assert(std::is_heap_until(i192, i192+7, std::greater<int>()) == i192+1);
+    assert(std::is_heap_until(i193, i193+7, std::greater<int>()) == i193+1);
+    assert(std::is_heap_until(i194, i194+7, std::greater<int>()) == i194+1);
+    assert(std::is_heap_until(i195, i195+7, std::greater<int>()) == i195+1);
+    assert(std::is_heap_until(i196, i196+7, std::greater<int>()) == i196+1);
+    assert(std::is_heap_until(i197, i197+7, std::greater<int>()) == i197+1);
+    assert(std::is_heap_until(i198, i198+7, std::greater<int>()) == i198+1);
+    assert(std::is_heap_until(i199, i199+7, std::greater<int>()) == i199+1);
+    assert(std::is_heap_until(i200, i200+7, std::greater<int>()) == i200+1);
+    assert(std::is_heap_until(i201, i201+7, std::greater<int>()) == i201+1);
+    assert(std::is_heap_until(i202, i202+7, std::greater<int>()) == i202+1);
+    assert(std::is_heap_until(i203, i203+7, std::greater<int>()) == i203+1);
+    assert(std::is_heap_until(i204, i204+7, std::greater<int>()) == i204+1);
+    assert(std::is_heap_until(i205, i205+7, std::greater<int>()) == i205+1);
+    assert(std::is_heap_until(i206, i206+7, std::greater<int>()) == i206+1);
+    assert(std::is_heap_until(i207, i207+7, std::greater<int>()) == i207+1);
+    assert(std::is_heap_until(i208, i208+7, std::greater<int>()) == i208+1);
+    assert(std::is_heap_until(i209, i209+7, std::greater<int>()) == i209+1);
+    assert(std::is_heap_until(i210, i210+7, std::greater<int>()) == i210+1);
+    assert(std::is_heap_until(i211, i211+7, std::greater<int>()) == i211+1);
+    assert(std::is_heap_until(i212, i212+7, std::greater<int>()) == i212+1);
+    assert(std::is_heap_until(i213, i213+7, std::greater<int>()) == i213+1);
+    assert(std::is_heap_until(i214, i214+7, std::greater<int>()) == i214+1);
+    assert(std::is_heap_until(i215, i215+7, std::greater<int>()) == i215+1);
+    assert(std::is_heap_until(i216, i216+7, std::greater<int>()) == i216+2);
+    assert(std::is_heap_until(i217, i217+7, std::greater<int>()) == i217+2);
+    assert(std::is_heap_until(i218, i218+7, std::greater<int>()) == i218+2);
+    assert(std::is_heap_until(i219, i219+7, std::greater<int>()) == i219+2);
+    assert(std::is_heap_until(i220, i220+7, std::greater<int>()) == i220+2);
+    assert(std::is_heap_until(i221, i221+7, std::greater<int>()) == i221+2);
+    assert(std::is_heap_until(i222, i222+7, std::greater<int>()) == i222+2);
+    assert(std::is_heap_until(i223, i223+7, std::greater<int>()) == i223+2);
+    assert(std::is_heap_until(i224, i224+7, std::greater<int>()) == i224+2);
+    assert(std::is_heap_until(i225, i225+7, std::greater<int>()) == i225+2);
+    assert(std::is_heap_until(i226, i226+7, std::greater<int>()) == i226+2);
+    assert(std::is_heap_until(i227, i227+7, std::greater<int>()) == i227+2);
+    assert(std::is_heap_until(i228, i228+7, std::greater<int>()) == i228+2);
+    assert(std::is_heap_until(i229, i229+7, std::greater<int>()) == i229+2);
+    assert(std::is_heap_until(i230, i230+7, std::greater<int>()) == i230+2);
+    assert(std::is_heap_until(i231, i231+7, std::greater<int>()) == i231+2);
+    assert(std::is_heap_until(i232, i232+7, std::greater<int>()) == i232+3);
+    assert(std::is_heap_until(i233, i233+7, std::greater<int>()) == i233+3);
+    assert(std::is_heap_until(i234, i234+7, std::greater<int>()) == i234+3);
+    assert(std::is_heap_until(i235, i235+7, std::greater<int>()) == i235+3);
+    assert(std::is_heap_until(i236, i236+7, std::greater<int>()) == i236+3);
+    assert(std::is_heap_until(i237, i237+7, std::greater<int>()) == i237+3);
+    assert(std::is_heap_until(i238, i238+7, std::greater<int>()) == i238+3);
+    assert(std::is_heap_until(i239, i239+7, std::greater<int>()) == i239+3);
+    assert(std::is_heap_until(i240, i240+7, std::greater<int>()) == i240+4);
+    assert(std::is_heap_until(i241, i241+7, std::greater<int>()) == i241+4);
+    assert(std::is_heap_until(i242, i242+7, std::greater<int>()) == i242+4);
+    assert(std::is_heap_until(i243, i243+7, std::greater<int>()) == i243+4);
+    assert(std::is_heap_until(i244, i244+7, std::greater<int>()) == i244+5);
+    assert(std::is_heap_until(i245, i245+7, std::greater<int>()) == i245+5);
+    assert(std::is_heap_until(i246, i246+7, std::greater<int>()) == i246+6);
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/ranges_is_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/ranges_is_heap.pass.cpp
new file mode 100644
index 0000000..f294d9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/ranges_is_heap.pass.cpp
@@ -0,0 +1,175 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//   constexpr bool is_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // Since C++20
+//
+// template<random_access_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   constexpr bool is_heap(R&& r, Comp comp = {}, Proj proj = {});                             // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Comp = std::ranges::less>
+concept HasIsHeapIter =
+    requires(Iter&& iter, Sent&& sent, Comp&& comp) {
+      std::ranges::is_heap(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Comp>(comp));
+    };
+
+static_assert(HasIsHeapIter<int*, int*, std::ranges::less>);
+
+// !random_access_iterator<I>
+static_assert(!HasIsHeapIter<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasIsHeapIter<RandomAccessIteratorBadIndex>);
+
+// !sentinel_for<S, I>
+static_assert(!HasIsHeapIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasIsHeapIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+struct NoComparator {};
+// !indirect_strict_weak_order<Comp, projected<I, Proj>>
+static_assert(!HasIsHeapIter<NoComparator*, NoComparator*>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Comp = std::ranges::less>
+concept HasIsHeapRange =
+    requires(Range&& range, Comp&& comp) {
+      std::ranges::is_heap(std::forward<Range>(range), std::forward<Comp>(comp));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasIsHeapRange<R<int*>>);
+
+// !random_access_range<R>
+static_assert(!HasIsHeapRange<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasIsHeapRange<RandomAccessRangeBadIndex>);
+
+// !indirect_strict_weak_order<Comp, projected<iterator_t<R>, Proj>>
+static_assert(!HasIsHeapRange<R<NoComparator*>>);
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(std::array<int, N> input, bool expected) {
+  auto begin = Iter(input.data());
+  auto end = Sent(Iter(input.data() + input.size()));
+
+  { // (iterator, sentinel) overload.
+    std::same_as<bool> decltype(auto) result = std::ranges::is_heap(begin, end);
+    assert(result == expected);
+  }
+
+  { // (range) overload.
+    auto range = std::ranges::subrange(begin, end);
+    std::same_as<bool> decltype(auto) result = std::ranges::is_heap(range);
+    assert(result == expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iter_sent() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, true);
+  // 1-element sequence.
+  test_one<Iter, Sent>(std::array{1}, true);
+  // 2-element sequence, a heap.
+  test_one<Iter, Sent>(std::array{2, 1}, true);
+  // 2-element sequence, not a heap.
+  test_one<Iter, Sent>(std::array{1, 2}, false);
+  // Longer sequence, a heap.
+  test_one<Iter, Sent>(std::array{8, 6, 7, 3, 4, 1, 5, 2}, true);
+  // Longer sequence, not a heap.
+  test_one<Iter, Sent>(std::array{8, 6, 7, 3, 4, 1, 2, 5}, false);
+  // Longer sequence with duplicates, a heap.
+  test_one<Iter, Sent>(std::array{8, 7, 5, 5, 6, 4, 1, 2, 3, 2}, true);
+  // Longer sequence with duplicates, not a heap.
+  test_one<Iter, Sent>(std::array{7, 5, 5, 6, 4, 1, 2, 3, 2, 8}, false);
+  // All elements are the same.
+  test_one<Iter, Sent>(std::array{1, 1, 1}, true);
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  test_iter_sent<Iter, Iter>();
+  test_iter_sent<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+  test_iter<const int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    std::ranges::less ls;
+    std::ranges::greater gt;
+    std::array in = {1, 3, 2, 5, 4, 7, 8, 6};
+
+    { // (iterator, sentinel) overload.
+      assert(!std::ranges::is_heap(in.begin(), in.end(), ls));
+      assert(std::ranges::is_heap(in.begin(), in.end(), gt));
+    }
+
+    { // (range) overload.
+      assert(!std::ranges::is_heap(in, ls));
+      assert(std::ranges::is_heap(in, gt));
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int x;
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    std::array in = {A{-8}, A{-6}, A{-7}, A{-3}, A{-4}, A{-1}, A{-5}, A{-2}};
+    auto negate = [](A a) { return a.x * -1; };
+
+    { // (iterator, sentinel) overload.
+      assert(!std::ranges::is_heap(in.begin(), in.end(), {}));
+      assert(std::ranges::is_heap(in.begin(), in.end(), {}, negate));
+    }
+
+    { // (range) overload.
+      assert(!std::ranges::is_heap(in, {}));
+      assert(std::ranges::is_heap(in, {}, negate));
+    }
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/ranges_is_heap_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/ranges_is_heap_until.pass.cpp
new file mode 100644
index 0000000..e6a74fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/is.heap/ranges_is_heap_until.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//   constexpr I is_heap_until(I first, S last, Comp comp = {}, Proj proj = {});                // Since C++20
+//
+// template<random_access_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   constexpr borrowed_iterator_t<R>
+//     is_heap_until(R&& r, Comp comp = {}, Proj proj = {});                                    // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter = int*, class Sent = int*, class Comp = std::ranges::less>
+concept HasIsHeapUntilIter =
+    requires(Iter&& iter, Sent&& sent, Comp&& comp) {
+      std::ranges::is_heap_until(std::forward<Iter>(iter), std::forward<Sent>(sent), std::forward<Comp>(comp));
+    };
+
+static_assert(HasIsHeapUntilIter<int*, int*, std::ranges::less>);
+
+// !random_access_iterator<I>
+static_assert(!HasIsHeapUntilIter<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasIsHeapUntilIter<RandomAccessIteratorBadIndex>);
+
+// !sentinel_for<S, I>
+static_assert(!HasIsHeapUntilIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasIsHeapUntilIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+struct NoComparator {};
+// !indirect_strict_weak_order<Comp, projected<I, Proj>>
+static_assert(!HasIsHeapUntilIter<NoComparator*, NoComparator*>);
+
+// Test constraints of the (range) overload.
+// =========================================
+
+template <class Range, class Comp = std::ranges::less>
+concept HasIsHeapUntilRange =
+    requires(Range&& range, Comp&& comp) {
+      std::ranges::is_heap_until(std::forward<Range>(range), std::forward<Comp>(comp));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasIsHeapUntilRange<R<int*>>);
+
+// !random_access_range<R>
+static_assert(!HasIsHeapUntilRange<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasIsHeapUntilRange<RandomAccessRangeBadIndex>);
+
+// !indirect_strict_weak_order<Comp, projected<iterator_t<R>, Proj>>
+static_assert(!HasIsHeapUntilRange<R<NoComparator*>>);
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(std::array<int, N> input, size_t until_index) {
+  auto begin = Iter(input.data());
+  auto end = Sent(Iter(input.data() + input.size()));
+
+  { // (iterator, sentinel) overload.
+    std::same_as<Iter> decltype(auto) result = std::ranges::is_heap_until(begin, end);
+    assert(base(result) == input.data() + until_index);
+  }
+
+  { // (range) overload.
+    auto range = std::ranges::subrange(begin, end);
+    std::same_as<Iter> decltype(auto) result = std::ranges::is_heap_until(range);
+    assert(base(result) == input.data() + until_index);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iter_sent() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, 0);
+  // 1-element sequence.
+  test_one<Iter, Sent>(std::array{1}, 1);
+  // 2-element sequence, a heap.
+  test_one<Iter, Sent>(std::array{2, 1}, 2);
+  // 2-element sequence, not a heap.
+  test_one<Iter, Sent>(std::array{1, 2}, 1);
+  // Longer sequence, a heap.
+  test_one<Iter, Sent>(std::array{8, 6, 7, 3, 4, 1, 5, 2}, 8);
+  // Longer sequence, not a heap.
+  test_one<Iter, Sent>(std::array{8, 6, 7, 3, 4, 1, 2, 5}, 7);
+  // Longer sequence with duplicates, a heap.
+  test_one<Iter, Sent>(std::array{8, 7, 5, 5, 6, 4, 1, 2, 3, 2}, 10);
+  // Longer sequence with duplicates, not a heap.
+  test_one<Iter, Sent>(std::array{7, 5, 5, 6, 4, 1, 2, 3, 2, 8}, 3);
+  // All elements are the same.
+  test_one<Iter, Sent>(std::array{1, 1, 1}, 3);
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  test_iter_sent<Iter, Iter>();
+  test_iter_sent<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+  test_iter<const int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    std::ranges::less ls;
+    std::ranges::greater gt;
+    std::array in = {1, 3, 2, 5, 4, 7, 8, 6};
+
+    { // (iterator, sentinel) overload.
+      auto result_default_comp = std::ranges::is_heap_until(in.begin(), in.end(), ls);
+      assert(result_default_comp == in.begin() + 1);
+      auto result_custom_comp = std::ranges::is_heap_until(in.begin(), in.end(), gt);
+      assert(result_custom_comp == in.end());
+    }
+
+    { // (range) overload.
+      auto result_default_comp = std::ranges::is_heap_until(in, ls);
+      assert(result_default_comp == in.begin() + 1);
+      auto result_custom_comp = std::ranges::is_heap_until(in, gt);
+      assert(result_custom_comp == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int x;
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    std::array in = {A{-8}, A{-6}, A{-7}, A{-3}, A{-4}, A{-1}, A{-5}, A{-2}};
+    auto negate = [](A a) { return a.x * -1; };
+
+    { // (iterator, sentinel) overload.
+      auto result_default_comp = std::ranges::is_heap_until(in.begin(), in.end(), {});
+      assert(result_default_comp == in.begin() + 1);
+      auto result_custom_comp = std::ranges::is_heap_until(in.begin(), in.end(), {}, negate);
+      assert(result_custom_comp == in.end());
+    }
+
+    { // (range) overload.
+      auto result_default_comp = std::ranges::is_heap_until(in, {});
+      assert(result_default_comp == in.begin() + 1);
+      auto result_custom_comp = std::ranges::is_heap_until(in, {}, negate);
+      assert(result_custom_comp == in.end());
+    }
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/make_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/make_heap.pass.cpp
new file mode 100644
index 0000000..26eba62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/make_heap.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   make_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        std::make_heap(Iter(work), Iter(work+n));
+        assert(std::is_heap(work, work+n));
+        assert(std::is_permutation(work, work+n, orig));
+        std::copy(orig, orig+n, work);
+    }
+
+    {
+        T input[] = {3, 4, 1, 2, 5};
+        std::make_heap(Iter(input), Iter(input + 5));
+        assert(std::is_heap(input, input + 5));
+        std::pop_heap(input, input + 5); assert(input[4] == 5);
+        std::pop_heap(input, input + 4); assert(input[3] == 4);
+        std::pop_heap(input, input + 3); assert(input[2] == 3);
+        std::pop_heap(input, input + 2); assert(input[1] == 2);
+        std::pop_heap(input, input + 1); assert(input[0] == 1);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/make_heap_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/make_heap_comp.pass.cpp
new file mode 100644
index 0000000..bfdbf18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/make_heap_comp.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   make_heap(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        std::make_heap(Iter(work), Iter(work+n), std::greater<T>());
+        assert(std::is_heap(work, work+n, std::greater<T>()));
+        assert(std::is_permutation(work, work+n, orig));
+        std::copy(orig, orig+n, work);
+    }
+
+    {
+        T input[] = {3, 4, 1, 2, 5};
+        std::make_heap(Iter(input), Iter(input + 5), std::greater<T>());
+        assert(std::is_heap(input, input + 5, std::greater<T>()));
+        std::pop_heap(input, input + 5, std::greater<T>()); assert(input[4] == 1);
+        std::pop_heap(input, input + 4, std::greater<T>()); assert(input[3] == 2);
+        std::pop_heap(input, input + 3, std::greater<T>()); assert(input[2] == 3);
+        std::pop_heap(input, input + 2, std::greater<T>()); assert(input[1] == 4);
+        std::pop_heap(input, input + 1, std::greater<T>()); assert(input[0] == 5);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/ranges_make_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/ranges_make_heap.pass.cpp
new file mode 100644
index 0000000..59b8283
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/make.heap/ranges_make_heap.pass.cpp
@@ -0,0 +1,223 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//         class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr I
+//     ranges::make_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::make_heap(R&& r, Comp comp = {}, Proj proj = {});                             // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasMakeHeapIt = requires(Iter first, Sent last, Comp comp) { std::ranges::make_heap(first, last, comp); };
+
+static_assert(HasMakeHeapIt<int*>);
+static_assert(!HasMakeHeapIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasMakeHeapIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasMakeHeapIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasMakeHeapIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasMakeHeapIt<int*, int*, BadComparator>);
+static_assert(!HasMakeHeapIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasMakeHeapR = requires(Range range, Comp comp) { std::ranges::make_heap(range, comp); };
+
+static_assert(HasMakeHeapR<UncheckedRange<int*>>);
+static_assert(!HasMakeHeapR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasMakeHeapR<RandomAccessRangeBadIndex>);
+static_assert(!HasMakeHeapR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasMakeHeapR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasMakeHeapR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasMakeHeapR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <size_t N, class T, class Iter>
+constexpr void verify_heap(const std::array<T, N>& heapified, Iter last, std::array<T, N> expected) {
+  assert(heapified == expected);
+  assert(base(last) == heapified.data() + heapified.size());
+  assert(std::is_heap(heapified.begin(), heapified.end()));
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(const std::array<int, N> input, std::array<int, N> expected) {
+  { // (iterator, sentinel) overload.
+    auto heapified = input;
+    auto b = Iter(heapified.data());
+    auto e = Sent(Iter(heapified.data() + heapified.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::make_heap(b, e);
+    verify_heap(heapified, last, expected);
+  }
+
+  { // (range) overload.
+    auto heapified = input;
+    auto b = Iter(heapified.data());
+    auto e = Sent(Iter(heapified.data() + heapified.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::make_heap(range);
+    verify_heap(heapified, last, expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, {});
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, {1});
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, {2, 1});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, {3, 1, 2});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 8, 4, 11, 5}, {11, 8, 4, 6, 1, 2, 3, 5});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 7>({2, 1, 3, 6, 2, 8, 6}, {8, 6, 6, 1, 2, 3, 2});
+  // All elements are the same.
+  test_one<Iter, Sent, 3>({1, 1, 1}, {1, 1, 1});
+  // Already heapified.
+  test_one<Iter, Sent, 5>({5, 4, 3, 1, 2}, {5, 4, 3, 1, 2});
+  // Sorted.
+  test_one<Iter, Sent, 5>({1, 2, 3, 4, 5}, {5, 4, 3, 1, 2});
+  // Reverse-sorted.
+  test_one<Iter, Sent, 5>({5, 4, 3, 2, 1}, {5, 4, 3, 2, 1});
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array input = {5, 4, 3, 2, 1};
+    std::array expected = {1, 2, 3, 5, 4};
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in.begin(), in.end(), std::ranges::greater{});
+      assert(in == expected);
+      assert(last == in.end());
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in, std::ranges::greater{});
+      assert(in == expected);
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{2}, A{1}, A{3}};
+    std::array expected = {A{3}, A{1}, A{2}};
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in.begin(), in.end(), {}, &A::a);
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in, {}, &A::a);
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct A {
+      int i;
+      constexpr A(int i_) : i(i_) {}
+
+      constexpr bool comparator(const A& rhs) const { return i < rhs.i; }
+      constexpr const A& projection() const { return *this; }
+
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{2}, A{1}, A{3}};
+    std::array expected = {A{3}, A{1}, A{2}};
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in.begin(), in.end(), &A::comparator, &A::projection);
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in, &A::comparator, &A::projection);
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    const std::array input = {2, 1, 3};
+    std::array expected = {3, 1, 2};
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in.begin(), in.end(), [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::make_heap(in, [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result =
+        std::ranges::make_heap(std::array{1, 2, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/assert.pop_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/assert.pop_heap.pass.cpp
new file mode 100644
index 0000000..ba11faa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/assert.pop_heap.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <algorithm>
+
+// Calling `pop_heap` on an empty range is invalid.
+
+#include <algorithm>
+
+#include <array>
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::array<int, 0> a;
+
+  TEST_LIBCPP_ASSERT_FAILURE(std::pop_heap(a.begin(), a.end()), "The heap given to pop_heap must be non-empty");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/assert.ranges_pop_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/assert.ranges_pop_heap.pass.cpp
new file mode 100644
index 0000000..336b4ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/assert.ranges_pop_heap.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// <algorithm>
+
+// Calling `ranges::pop_heap` on an empty range is invalid.
+
+#include <algorithm>
+
+#include <array>
+#include "check_assertion.h"
+
+int main(int, char**) {
+  std::array<int, 0> a;
+
+  TEST_LIBCPP_ASSERT_FAILURE(std::ranges::pop_heap(a.begin(), a.end()), "The heap given to pop_heap must be non-empty");
+  TEST_LIBCPP_ASSERT_FAILURE(std::ranges::pop_heap(a), "The heap given to pop_heap must be non-empty");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/pop_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/pop_heap.pass.cpp
new file mode 100644
index 0000000..d06ddfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/pop_heap.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   pop_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    T orig[15] = {9,6,9,5,5, 8,9,1,1,3, 5,3,4,7,2};
+    T work[15] = {9,6,9,5,5, 8,9,1,1,3, 5,3,4,7,2};
+    assert(std::is_heap(orig, orig+15));
+    for (int i = 15; i >= 1; --i) {
+        std::pop_heap(Iter(work), Iter(work+i));
+        assert(std::is_heap(work, work+i-1));
+        assert(std::max_element(work, work+i-1) == work);
+        assert(std::is_permutation(work, work+15, orig));
+    }
+    assert(std::is_sorted(work, work+15));
+
+    {
+        T input[] = {5, 4, 1, 2, 3};
+        assert(std::is_heap(input, input + 5));
+        std::pop_heap(Iter(input), Iter(input + 5)); assert(input[4] == 5);
+        std::pop_heap(Iter(input), Iter(input + 4)); assert(input[3] == 4);
+        std::pop_heap(Iter(input), Iter(input + 3)); assert(input[2] == 3);
+        std::pop_heap(Iter(input), Iter(input + 2)); assert(input[1] == 2);
+        std::pop_heap(Iter(input), Iter(input + 1)); assert(input[0] == 1);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/pop_heap_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/pop_heap_comp.pass.cpp
new file mode 100644
index 0000000..d080152
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/pop_heap_comp.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   pop_heap(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    T orig[15] = {1,1,2,3,3, 8,4,6,5,5, 5,9,9,7,9};
+    T work[15] = {1,1,2,3,3, 8,4,6,5,5, 5,9,9,7,9};
+    assert(std::is_heap(orig, orig+15, std::greater<T>()));
+    for (int i = 15; i >= 1; --i) {
+        std::pop_heap(Iter(work), Iter(work+i), std::greater<T>());
+        assert(std::is_heap(work, work+i-1, std::greater<T>()));
+        assert(std::min_element(work, work+i-1) == work);
+        assert(std::is_permutation(work, work+15, orig));
+    }
+    assert(std::is_sorted(work, work+15, std::greater<T>()));
+
+    {
+        T input[] = {1, 2, 5, 4, 3};
+        assert(std::is_heap(input, input + 5, std::greater<T>()));
+        std::pop_heap(Iter(input), Iter(input + 5), std::greater<T>()); assert(input[4] == 1);
+        std::pop_heap(Iter(input), Iter(input + 4), std::greater<T>()); assert(input[3] == 2);
+        std::pop_heap(Iter(input), Iter(input + 3), std::greater<T>()); assert(input[2] == 3);
+        std::pop_heap(Iter(input), Iter(input + 2), std::greater<T>()); assert(input[1] == 4);
+        std::pop_heap(Iter(input), Iter(input + 1), std::greater<T>()); assert(input[0] == 5);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/ranges_pop_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/ranges_pop_heap.pass.cpp
new file mode 100644
index 0000000..6ce05db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/pop.heap/ranges_pop_heap.pass.cpp
@@ -0,0 +1,222 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//         class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr I
+//     ranges::pop_heap(I first, S last, Comp comp = {}, Proj proj = {});                    // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::pop_heap(R&& r, Comp comp = {}, Proj proj = {});                              // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasPopHeapIt = requires(Iter first, Sent last, Comp comp) { std::ranges::make_heap(first, last, comp); };
+
+static_assert(HasPopHeapIt<int*>);
+static_assert(!HasPopHeapIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasPopHeapIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasPopHeapIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasPopHeapIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasPopHeapIt<int*, int*, BadComparator>);
+static_assert(!HasPopHeapIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasPopHeapR = requires(Range range, Comp comp) { std::ranges::make_heap(range, comp); };
+
+static_assert(HasPopHeapR<UncheckedRange<int*>>);
+static_assert(!HasPopHeapR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasPopHeapR<RandomAccessRangeBadIndex>);
+static_assert(!HasPopHeapR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasPopHeapR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasPopHeapR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasPopHeapR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <size_t N, class T, class Iter>
+constexpr void verify_heap(const std::array<T, N>& heapified, Iter last, std::array<T, N> expected) {
+  assert(heapified == expected);
+  assert(base(last) == heapified.data() + heapified.size());
+  assert(std::is_heap(heapified.begin(), heapified.end() - 1));
+  assert(*std::max_element(heapified.begin(), heapified.end()) == heapified.back());
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(const std::array<int, N> input, std::array<int, N> expected) {
+  assert(!input.empty());
+  assert(std::is_heap(input.begin(), input.end()));
+
+  { // (iterator, sentinel) overload.
+    auto heapified = input;
+    auto b = Iter(heapified.data());
+    auto e = Sent(Iter(heapified.data() + heapified.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::pop_heap(b, e);
+    verify_heap(heapified, last, expected);
+  }
+
+  { // (range) overload.
+    auto heapified = input;
+    auto b = Iter(heapified.data());
+    auto e = Sent(Iter(heapified.data() + heapified.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::pop_heap(range);
+    verify_heap(heapified, last, expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, {1});
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, {1, 2});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({3, 1, 2}, {2, 1, 3});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({11, 8, 5, 6, 4, 3, 2, 1}, {8, 6, 5, 1, 4, 3, 2, 11});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 8>({8, 8, 6, 6, 1, 2, 2, 3}, {8, 6, 6, 3, 1, 2, 2, 8});
+  // All elements are the same.
+  test_one<Iter, Sent, 4>({1, 1, 1, 1}, {1, 1, 1, 1});
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array input = {1, 2, 3, 5, 4};
+    std::array expected = {2, 4, 3, 5, 1};
+    auto comp = std::ranges::greater{};
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in.begin(), in.end(), comp);
+      assert(in == expected);
+      assert(last == in.data() + in.size());
+      assert(std::is_heap(in.begin(), in.end() - 1, comp));
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in, comp);
+      assert(in == expected);
+      assert(last == in.data() + in.size());
+      assert(std::is_heap(in.begin(), in.end() - 1, comp));
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{3}, A{1}, A{2}};
+    std::array expected = {A{2}, A{1}, A{3}};
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in.begin(), in.end(), {}, &A::a);
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in, {}, &A::a);
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct A {
+      int i;
+      constexpr A(int i_) : i(i_) {}
+
+      constexpr bool comparator(const A& rhs) const { return i < rhs.i; }
+      constexpr const A& projection() const { return *this; }
+
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{3}, A{1}, A{2}};
+    std::array expected = {A{2}, A{1}, A{3}};
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in.begin(), in.end(), &A::comparator, &A::projection);
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in, &A::comparator, &A::projection);
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    const std::array input = {3, 1, 2};
+    std::array expected = {2, 1, 3};
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in.begin(), in.end(), [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::pop_heap(in, [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result =
+        std::ranges::pop_heap(std::array{2, 1, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/push_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/push_heap.pass.cpp
new file mode 100644
index 0000000..9c3f787
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/push_heap.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   push_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    T orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int i = 1; i < 15; ++i) {
+        std::push_heap(Iter(work), Iter(work+i));
+        assert(std::is_permutation(work, work+i, orig));
+        assert(std::is_heap(work, work+i));
+    }
+
+    {
+        T input[] = {1, 3, 2, 5, 4};
+        std::push_heap(Iter(input), Iter(input + 1)); assert(input[0] == 1);
+        std::push_heap(Iter(input), Iter(input + 2)); assert(input[0] == 3);
+        std::push_heap(Iter(input), Iter(input + 3)); assert(input[0] == 3);
+        std::push_heap(Iter(input), Iter(input + 4)); assert(input[0] == 5);
+        std::push_heap(Iter(input), Iter(input + 5)); assert(input[0] == 5);
+        assert(std::is_heap(input, input + 5));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/push_heap_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/push_heap_comp.pass.cpp
new file mode 100644
index 0000000..1fdfe3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/push_heap_comp.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   push_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    T orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int i = 1; i < 15; ++i) {
+        std::push_heap(Iter(work), Iter(work+i), std::greater<T>());
+        assert(std::is_permutation(work, work+i, orig));
+        assert(std::is_heap(work, work+i, std::greater<T>()));
+    }
+
+    {
+        T input[] = {5, 3, 4, 1, 2};
+        std::push_heap(Iter(input), Iter(input + 1), std::greater<T>()); assert(input[0] == 5);
+        std::push_heap(Iter(input), Iter(input + 2), std::greater<T>()); assert(input[0] == 3);
+        std::push_heap(Iter(input), Iter(input + 3), std::greater<T>()); assert(input[0] == 3);
+        std::push_heap(Iter(input), Iter(input + 4), std::greater<T>()); assert(input[0] == 1);
+        std::push_heap(Iter(input), Iter(input + 5), std::greater<T>()); assert(input[0] == 1);
+        assert(std::is_heap(input, input + 5, std::greater<T>()));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/ranges_push_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/ranges_push_heap.pass.cpp
new file mode 100644
index 0000000..e2dc0ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/push.heap/ranges_push_heap.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//         class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr I
+//     ranges::push_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::push_heap(R&& r, Comp comp = {}, Proj proj = {});                             // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasPushHeapIt = requires(Iter first, Sent last, Comp comp) { std::ranges::make_heap(first, last, comp); };
+
+static_assert(HasPushHeapIt<int*>);
+static_assert(!HasPushHeapIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasPushHeapIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasPushHeapIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasPushHeapIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasPushHeapIt<int*, int*, BadComparator>);
+static_assert(!HasPushHeapIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasPushHeapR = requires(Range range, Comp comp) { std::ranges::make_heap(range, comp); };
+
+static_assert(HasPushHeapR<UncheckedRange<int*>>);
+static_assert(!HasPushHeapR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasPushHeapR<RandomAccessRangeBadIndex>);
+static_assert(!HasPushHeapR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasPushHeapR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasPushHeapR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasPushHeapR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <size_t N, class T, class Iter>
+constexpr void verify_heap(const std::array<T, N>& heapified, Iter last, std::array<T, N> expected) {
+  assert(heapified == expected);
+  assert(base(last) == heapified.data() + heapified.size());
+  assert(std::is_heap(heapified.begin(), heapified.end()));
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(const std::array<int, N> input, std::array<int, N> expected) {
+  if (!input.empty()) {
+    assert(std::is_heap(input.begin(), input.end() - 1));
+  }
+
+  { // (iterator, sentinel) overload.
+    auto heapified = input;
+    auto b = Iter(heapified.data());
+    auto e = Sent(Iter(heapified.data() + heapified.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::push_heap(b, e);
+    verify_heap(heapified, last, expected);
+  }
+
+  { // (range) overload.
+    auto heapified = input;
+    auto b = Iter(heapified.data());
+    auto e = Sent(Iter(heapified.data() + heapified.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::push_heap(range);
+    verify_heap(heapified, last, expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, {});
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, {1});
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, {2, 1});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, {3, 1, 2});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({11, 6, 5, 1, 4, 3, 2, 8}, {11, 8, 5, 6, 4, 3, 2, 1});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 7>({8, 6, 3, 1, 2, 2, 6}, {8, 6, 6, 1, 2, 2, 3});
+  // All elements are the same.
+  test_one<Iter, Sent, 4>({1, 1, 1, 1}, {1, 1, 1, 1});
+  // Already heapified.
+  test_one<Iter, Sent, 5>({5, 4, 3, 1, 2}, {5, 4, 3, 1, 2});
+  // Reverse-sorted.
+  test_one<Iter, Sent, 5>({5, 4, 3, 2, 1}, {5, 4, 3, 2, 1});
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array input = {5, 4, 3, 2, 1};
+    std::array expected = {1, 5, 3, 2, 4};
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in.begin(), in.end(), std::ranges::greater{});
+      assert(in == expected);
+      assert(last == in.end());
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in, std::ranges::greater{});
+      assert(in == expected);
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{2}, A{1}, A{3}};
+    std::array expected = {A{3}, A{1}, A{2}};
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in.begin(), in.end(), {}, &A::a);
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in, {}, &A::a);
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct A {
+      int i;
+      constexpr A(int i_) : i(i_) {}
+
+      constexpr bool comparator(const A& rhs) const { return i < rhs.i; }
+      constexpr const A& projection() const { return *this; }
+
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{2}, A{1}, A{3}};
+    std::array expected = {A{3}, A{1}, A{2}};
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in.begin(), in.end(), &A::comparator, &A::projection);
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in, &A::comparator, &A::projection);
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    const std::array input = {2, 1, 3};
+    std::array expected = {3, 1, 2};
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in.begin(), in.end(), [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_heap(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::push_heap(in, [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_heap(in, last, expected);
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result =
+        std::ranges::push_heap(std::array{1, 2, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/ranges_sort_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/ranges_sort_heap.pass.cpp
new file mode 100644
index 0000000..faf1e23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/ranges_sort_heap.pass.cpp
@@ -0,0 +1,220 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//         class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr I
+//     ranges::sort_heap(I first, S last, Comp comp = {}, Proj proj = {});                   // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::sort_heap(R&& r, Comp comp = {}, Proj proj = {});                             // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasSortHeapIt = requires(Iter first, Sent last, Comp comp) { std::ranges::make_heap(first, last, comp); };
+
+static_assert(HasSortHeapIt<int*>);
+static_assert(!HasSortHeapIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasSortHeapIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasSortHeapIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasSortHeapIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasSortHeapIt<int*, int*, BadComparator>);
+static_assert(!HasSortHeapIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasSortHeapR = requires(Range range, Comp comp) { std::ranges::make_heap(range, comp); };
+
+static_assert(HasSortHeapR<UncheckedRange<int*>>);
+static_assert(!HasSortHeapR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasSortHeapR<RandomAccessRangeBadIndex>);
+static_assert(!HasSortHeapR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasSortHeapR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasSortHeapR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasSortHeapR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <size_t N, class T, class Iter>
+constexpr void verify_sorted(const std::array<T, N>& sorted, Iter last, std::array<T, N> expected) {
+  assert(sorted == expected);
+  assert(base(last) == sorted.data() + sorted.size());
+  assert(std::is_sorted(sorted.begin(), sorted.end()));
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(const std::array<int, N> input, std::array<int, N> expected) {
+  assert(std::is_heap(input.begin(), input.end()));
+
+  { // (iterator, sentinel) overload.
+    auto sorted = input;
+    auto b = Iter(sorted.data());
+    auto e = Sent(Iter(sorted.data() + sorted.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::sort_heap(b, e);
+    verify_sorted(sorted, last, expected);
+  }
+
+  { // (range) overload.
+    auto sorted = input;
+    auto b = Iter(sorted.data());
+    auto e = Sent(Iter(sorted.data() + sorted.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::sort_heap(range);
+    verify_sorted(sorted, last, expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, {1});
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, {1, 2});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({3, 1, 2}, {1, 2, 3});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({11, 8, 4, 6, 1, 2, 3, 5}, {1, 2, 3, 4, 5, 6, 8, 11});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 7>({8, 6, 6, 1, 2, 3, 2}, {1, 2, 2, 3, 6, 6, 8});
+  // All elements are the same.
+  test_one<Iter, Sent, 4>({1, 1, 1, 1}, {1, 1, 1, 1});
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array input = {1, 2, 3, 5, 4};
+    std::array expected = {5, 4, 3, 2, 1};
+    auto comp = std::ranges::greater{};
+    assert(std::is_heap(input.begin(), input.end(), comp));
+
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in.begin(), in.end(), comp);
+      assert(in == expected);
+      assert(last == in.data() + in.size());
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in, comp);
+      assert(in == expected);
+      assert(last == in.data() + in.size());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{3}, A{1}, A{2}};
+    std::array expected = {A{1}, A{2}, A{3}};
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in.begin(), in.end(), {}, &A::a);
+      verify_sorted(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in, {}, &A::a);
+      verify_sorted(in, last, expected);
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct A {
+      int i;
+      constexpr A(int i_) : i(i_) {}
+
+      constexpr bool comparator(const A& rhs) const { return i < rhs.i; }
+      constexpr const A& projection() const { return *this; }
+
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array input = {A{3}, A{1}, A{2}};
+    std::array expected = {A{1}, A{2}, A{3}};
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in.begin(), in.end(), &A::comparator, &A::projection);
+      verify_sorted(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in, &A::comparator, &A::projection);
+      verify_sorted(in, last, expected);
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    const std::array input = {3, 1, 2};
+    std::array expected = {1, 2, 3};
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in.begin(), in.end(), [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_sorted(in, last, expected);
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::sort_heap(in, [](int i, int j) { return BooleanTestable{i < j}; });
+      verify_sorted(in, last, expected);
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result =
+        std::ranges::sort_heap(std::array{2, 1, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/sort_heap.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/sort_heap.pass.cpp
new file mode 100644
index 0000000..fcfd5b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/sort_heap.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   sort_heap(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        std::make_heap(work, work+n);
+        std::sort_heap(Iter(work), Iter(work+n));
+        assert(std::is_sorted(work, work+n));
+        assert(std::is_permutation(work, work+n, orig));
+        std::copy(orig, orig+n, work);
+    }
+
+    {
+        T input[] = {5, 3, 4, 1, 2};
+        assert(std::is_heap(input, input + 5));
+        std::sort_heap(Iter(input), Iter(input + 5));
+        assert(input[0] == 1);
+        assert(input[1] == 2);
+        assert(input[2] == 3);
+        assert(input[3] == 4);
+        assert(input[4] == 5);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/sort_heap_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/sort_heap_comp.pass.cpp
new file mode 100644
index 0000000..9f26f5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.heap.operations/sort.heap/sort_heap_comp.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   sort_heap(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        std::make_heap(work, work+n, std::greater<T>());
+        std::sort_heap(Iter(work), Iter(work+n), std::greater<T>());
+        assert(std::is_sorted(work, work+n, std::greater<T>()));
+        assert(std::is_permutation(work, work+n, orig));
+        std::copy(orig, orig+n, work);
+    }
+
+    {
+        T input[] = {1, 3, 2, 5, 4};
+        assert(std::is_heap(input, input + 5, std::greater<T>()));
+        std::sort_heap(Iter(input), Iter(input + 5), std::greater<T>());
+        assert(input[0] == 5);
+        assert(input[1] == 4);
+        assert(input[2] == 3);
+        assert(input[3] == 2);
+        assert(input[4] == 1);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/lexicographical_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/lexicographical_compare.pass.cpp
new file mode 100644
index 0000000..10e45df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/lexicographical_compare.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2>
+//   requires HasLess<Iter1::value_type, Iter2::value_type>
+//         && HasLess<Iter2::value_type, Iter1::value_type>
+//   constexpr bool             // constexpr after C++17
+//   lexicographical_compare(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 2, 3};
+    int ib[] = {1, 3, 5, 2, 4, 6};
+
+    return  std::lexicographical_compare(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib))
+        && !std::lexicographical_compare(std::begin(ib), std::end(ib), std::begin(ia), std::end(ia))
+           ;
+    }
+#endif
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {1, 2, 3};
+    assert(!std::lexicographical_compare(Iter1(ia),   Iter1(ia+sa), Iter2(ib),   Iter2(ib+2)));
+    assert( std::lexicographical_compare(Iter1(ib),   Iter1(ib+2),  Iter2(ia),   Iter2(ia+sa)));
+    assert(!std::lexicographical_compare(Iter1(ia),   Iter1(ia+sa), Iter2(ib),   Iter2(ib+3)));
+    assert( std::lexicographical_compare(Iter1(ib),   Iter1(ib+3),  Iter2(ia),   Iter2(ia+sa)));
+    assert( std::lexicographical_compare(Iter1(ia),   Iter1(ia+sa), Iter2(ib+1), Iter2(ib+3)));
+    assert(!std::lexicographical_compare(Iter1(ib+1), Iter1(ib+3),  Iter2(ia),   Iter2(ia+sa)));
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, const int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<forward_iterator<const int*>, const int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, const int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, const int*>();
+
+    test<const int*, cpp17_input_iterator<const int*> >();
+    test<const int*, forward_iterator<const int*> >();
+    test<const int*, bidirectional_iterator<const int*> >();
+    test<const int*, random_access_iterator<const int*> >();
+    test<const int*, const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/lexicographical_compare_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/lexicographical_compare_comp.pass.cpp
new file mode 100644
index 0000000..a78efaf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/lexicographical_compare_comp.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2, CopyConstructible Compare>
+//   requires Predicate<Compare, Iter1::value_type, Iter2::value_type>
+//         && Predicate<Compare, Iter2::value_type, Iter1::value_type>
+//   constexpr bool             // constexpr after C++17
+//   lexicographical_compare(Iter1 first1, Iter1 last1,
+//                           Iter2 first2, Iter2 last2, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 2, 3};
+    int ib[] = {1, 3, 5, 2, 4, 6};
+
+    std::greater<int> pred{};
+    return !std::lexicographical_compare(std::begin(ia), std::end(ia), std::begin(ib), std::end(ib), pred)
+        &&  std::lexicographical_compare(std::begin(ib), std::end(ib), std::begin(ia), std::end(ia), pred)
+           ;
+    }
+#endif
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {1, 2, 3, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {1, 2, 3};
+    typedef std::greater<int> C;
+    C c;
+    assert(!std::lexicographical_compare(Iter1(ia),   Iter1(ia+sa), Iter2(ib),   Iter2(ib+2),  c));
+    assert( std::lexicographical_compare(Iter1(ib),   Iter1(ib+2),  Iter2(ia),   Iter2(ia+sa), c));
+    assert(!std::lexicographical_compare(Iter1(ia),   Iter1(ia+sa), Iter2(ib),   Iter2(ib+3),  c));
+    assert( std::lexicographical_compare(Iter1(ib),   Iter1(ib+3),  Iter2(ia),   Iter2(ia+sa), c));
+    assert(!std::lexicographical_compare(Iter1(ia),   Iter1(ia+sa), Iter2(ib+1), Iter2(ib+3),  c));
+    assert( std::lexicographical_compare(Iter1(ib+1), Iter1(ib+3),  Iter2(ia),   Iter2(ia+sa), c));
+}
+
+int main(int, char**)
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, const int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<forward_iterator<const int*>, const int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, const int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, const int*>();
+
+    test<const int*, cpp17_input_iterator<const int*> >();
+    test<const int*, forward_iterator<const int*> >();
+    test<const int*, bidirectional_iterator<const int*> >();
+    test<const int*, random_access_iterator<const int*> >();
+    test<const int*, const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/ranges.lexicographical_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/ranges.lexicographical_compare.pass.cpp
new file mode 100644
index 0000000..058be46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.lex.comparison/ranges.lexicographical_compare.pass.cpp
@@ -0,0 +1,242 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          class Proj1 = identity, class Proj2 = identity,
+//          indirect_strict_weak_order<projected<I1, Proj1>,
+//                                     projected<I2, Proj2>> Comp = ranges::less>
+//   constexpr bool
+//     ranges::lexicographical_compare(I1 first1, S1 last1, I2 first2, S2 last2,
+//                                     Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});
+// template<input_range R1, input_range R2, class Proj1 = identity,
+//          class Proj2 = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R1>, Proj1>,
+//                                     projected<iterator_t<R2>, Proj2>> Comp = ranges::less>
+//   constexpr bool
+//     ranges::lexicographical_compare(R1&& r1, R2&& r2, Comp comp = {},
+//                                     Proj1 proj1 = {}, Proj2 proj2 = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Sent1 = Iter1, class Iter2 = int*, class Sent2 = int*>
+concept HasLexicographicalCompareIt = requires(Iter1 first1, Sent1 last1, Iter2 first2, Sent2 last2) {
+  std::ranges::lexicographical_compare(first1, last1, first2, last2);
+};
+
+template <class Range1, class Range2 = UncheckedRange<int*>>
+concept HasLexicographicalCompareR = requires(Range1 range1, Range2 range2) {
+  std::ranges::lexicographical_compare(range1, range2);
+};
+
+static_assert(HasLexicographicalCompareIt<int*>);
+static_assert(!HasLexicographicalCompareIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasLexicographicalCompareIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasLexicographicalCompareIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasLexicographicalCompareIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasLexicographicalCompareIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasLexicographicalCompareIt<int*, int*, InputIteratorNotDerivedFrom>);
+static_assert(!HasLexicographicalCompareIt<int*, int*, InputIteratorNotIndirectlyReadable>);
+static_assert(!HasLexicographicalCompareIt<int*, int*, InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasLexicographicalCompareIt<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasLexicographicalCompareIt<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasLexicographicalCompareIt<int*, int*, int**, int**>); // not indirect_strict_weak_order
+
+static_assert(HasLexicographicalCompareR<UncheckedRange<int*>>);
+static_assert(!HasLexicographicalCompareR<InputRangeNotDerivedFrom>);
+static_assert(!HasLexicographicalCompareR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasLexicographicalCompareR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasLexicographicalCompareR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasLexicographicalCompareR<InputRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasLexicographicalCompareR<UncheckedRange<int*>, InputRangeNotDerivedFrom>);
+static_assert(!HasLexicographicalCompareR<UncheckedRange<int*>, InputRangeNotIndirectlyReadable>);
+static_assert(!HasLexicographicalCompareR<UncheckedRange<int*>, InputRangeNotInputOrOutputIterator>);
+static_assert(!HasLexicographicalCompareR<UncheckedRange<int*>, InputRangeNotSentinelSemiregular>);
+static_assert(!HasLexicographicalCompareR<UncheckedRange<int*>, InputRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasLexicographicalCompareIt<UncheckedRange<int*>, UncheckedRange<int**>>); // not indirect_strict_weak_order
+
+template <int N, int M>
+struct Data {
+  std::array<int, N> input1;
+  std::array<int, M> input2;
+  bool expected;
+};
+
+template <class Iter1, class Sent1, class Iter2, class Sent2, int N, int M>
+constexpr void test(Data<N, M> d) {
+  {
+    std::same_as<bool> decltype(auto) ret =
+        std::ranges::lexicographical_compare(Iter1(d.input1.data()), Sent1(Iter1(d.input1.data() + d.input1.size())),
+                                             Iter2(d.input2.data()), Sent2(Iter2(d.input2.data() + d.input2.size())));
+    assert(ret == d.expected);
+  }
+  {
+    auto range1 = std::ranges::subrange(Iter1(d.input1.data()), Sent1(Iter1(d.input1.data() + d.input1.size())));
+    auto range2 = std::ranges::subrange(Iter2(d.input2.data()), Sent2(Iter2(d.input2.data() + d.input2.size())));
+    std::same_as<bool> decltype(auto) ret =
+        std::ranges::lexicographical_compare(range1, range2);
+    assert(ret == d.expected);
+  }
+}
+
+template <class Iter1, class Sent1, class Iter2, class Sent2 = Iter2>
+constexpr void test_iterators() {
+  // simple test
+  test<Iter1, Sent1, Iter2, Sent2, 4, 4>({.input1 = {1, 2}, .input2 = {1, 2, 3, 4}, .expected = true});
+  // ranges are identical
+  test<Iter1, Sent1, Iter2, Sent2, 4, 4>({.input1 = {1, 2, 3, 4}, .input2 = {1, 2, 3, 4}, .expected = false});
+  // first range is empty
+  test<Iter1, Sent1, Iter2, Sent2, 0, 4>({.input1 = {}, .input2 = {1, 2, 3, 4}, .expected = true});
+  // second range is empty
+  test<Iter1, Sent1, Iter2, Sent2, 4, 0>({.input1 = {1, 2, 3, 4}, .input2 = {}, .expected = false});
+  // both ranges are empty
+  test<Iter1, Sent1, Iter2, Sent2, 0, 0>({.input1 = {}, .input2 = {}, .expected = false});
+  // the first range compares less; first range is smaller
+  test<Iter1, Sent1, Iter2, Sent2, 3, 5>({.input1 = {1, 2, 3}, .input2 = {1, 2, 4, 5, 6}, .expected = true});
+  // the second range compares less; first range is smaller
+  test<Iter1, Sent1, Iter2, Sent2, 3, 5>({.input1 = {1, 2, 4}, .input2 = {1, 2, 3, 4, 5}, .expected = false});
+  // the first range compares less; second range is smaller
+  test<Iter1, Sent1, Iter2, Sent2, 5, 3>({.input1 = {1, 2, 3, 4, 5}, .input2 = {1, 2, 4}, .expected = true});
+  // the second range compares less; second range is smaller
+  test<Iter1, Sent1, Iter2, Sent2, 5, 3>({.input1 = {1, 2, 4, 5, 6}, .input2 = {1, 2, 3}, .expected = false});
+}
+
+template <class Iter1, class Sent1 = Iter1>
+constexpr void test_iterators2() {
+  test_iterators<Iter1, Sent1, cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<Iter1, Sent1, forward_iterator<int*>>();
+  test_iterators<Iter1, Sent1, bidirectional_iterator<int*>>();
+  test_iterators<Iter1, Sent1, random_access_iterator<int*>>();
+  test_iterators<Iter1, Sent1, contiguous_iterator<int*>>();
+  test_iterators<Iter1, Sent1, int*>();
+  test_iterators<Iter1, Sent1, const int*>();
+}
+
+constexpr bool test() {
+  test_iterators2<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators2<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators2<forward_iterator<int*>>();
+  test_iterators2<bidirectional_iterator<int*>>();
+  test_iterators2<random_access_iterator<int*>>();
+  test_iterators2<contiguous_iterator<int*>>();
+  test_iterators2<int*>();
+  test_iterators2<const int*>();
+
+  { // check that custom projections and the comparator are used properly
+    {
+      int a[] = {3, 4, 5, 6};
+      int b[] = {24, 33, 42, 51};
+
+      auto ret = std::ranges::lexicographical_compare(std::begin(a), std::end(a),
+                                                      std::begin(b), std::end(b),
+                                                      [](int lhs, int rhs) { return lhs == rhs + 5; },
+                                                      [](int v) { return v - 2; },
+                                                      [](int v) { return v / 3; });
+      assert(!ret);
+    }
+    {
+      int a[] = {3, 4, 5, 6};
+      int b[] = {24, 33, 42, 51};
+
+      auto ret = std::ranges::lexicographical_compare(a, b,
+                                                      [](int lhs, int rhs) { return lhs == rhs + 5; },
+                                                      [](int v) { return v - 2; },
+                                                      [](int v) { return v / 3; });
+      assert(!ret);
+    }
+  }
+
+  { // check that std::invoke is used
+    struct S {
+      constexpr S(int i_) : i(i_) {}
+      constexpr bool compare(const S& j) const { return j.i < i; }
+      constexpr const S& identity() const { return *this; }
+      int i;
+    };
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::lexicographical_compare(std::begin(a), std::end(a),
+                                                      std::begin(a), std::end(a),
+                                                      &S::compare,
+                                                      &S::identity,
+                                                      &S::identity);
+      assert(!ret);
+    }
+    {
+      S a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::lexicographical_compare(a, a, &S::compare, &S::identity, &S::identity);
+      assert(!ret);
+    }
+  }
+
+  { // check that the implicit conversion to bool works
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::lexicographical_compare(std::begin(a), std::end(a),
+                                                      std::begin(a), std::end(a),
+                                                      [](int i, int j) { return BooleanTestable{i < j}; });
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::lexicographical_compare(a, a, [](int i, int j) { return BooleanTestable{i < j}; });
+      assert(!ret);
+    }
+  }
+
+  { // check that the complexity requirements are met
+    {
+      int predCount = 0;
+      auto pred = [&](int i, int j) { ++predCount; return i < j; };
+      auto proj1Count = 0;
+      auto proj1 = [&](int i) { ++proj1Count; return i; };
+      auto proj2Count = 0;
+      auto proj2 = [&](int i) { ++proj2Count; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::lexicographical_compare(std::begin(a), std::end(a), std::begin(a), std::end(a), pred, proj1, proj2);
+      assert(!ret);
+      assert(predCount == 10);
+      assert(proj1Count == 10);
+      assert(proj2Count == 10);
+    }
+    {
+      int predCount = 0;
+      auto pred = [&](int i, int j) { ++predCount; return i < j; };
+      auto proj1Count = 0;
+      auto proj1 = [&](int i) { ++proj1Count; return i; };
+      auto proj2Count = 0;
+      auto proj2 = [&](int i) { ++proj2Count; return i; };
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::lexicographical_compare(a, a, pred, proj1, proj2);
+      assert(!ret);
+      assert(predCount == 10);
+      assert(proj1Count == 10);
+      assert(proj2Count == 10);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/inplace_merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/inplace_merge.pass.cpp
new file mode 100644
index 0000000..1271865
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/inplace_merge.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter>
+//   requires ShuffleIterator<Iter>
+//         && LessThanComparable<Iter::value_type>
+//   void
+//   inplace_merge(Iter first, Iter middle, Iter last);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER >= 11
+struct S {
+    S() : i_(0) {}
+    S(int i) : i_(i) {}
+
+    S(const S&  rhs) : i_(rhs.i_) {}
+    S(      S&& rhs) : i_(rhs.i_) { rhs.i_ = -1; }
+
+    S& operator =(const S&  rhs) { i_ = rhs.i_;              return *this; }
+    S& operator =(      S&& rhs) { i_ = rhs.i_; rhs.i_ = -2; assert(this != &rhs); return *this; }
+    S& operator =(int i)         { i_ = i;                   return *this; }
+
+    bool operator  <(const S&  rhs) const { return i_ < rhs.i_; }
+    bool operator ==(const S&  rhs) const { return i_ == rhs.i_; }
+    bool operator ==(int i)         const { return i_ == i; }
+
+    void set(int i) { i_ = i; }
+
+    int i_;
+    };
+#endif
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test_one(unsigned N, unsigned M)
+{
+    typedef typename std::iterator_traits<Iter>::value_type value_type;
+    assert(M <= N);
+    value_type* ia = new value_type[N];
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    std::shuffle(ia, ia+N, randomness);
+    std::sort(ia, ia+M);
+    std::sort(ia+M, ia+N);
+    std::inplace_merge(Iter(ia), Iter(ia+M), Iter(ia+N));
+    if(N > 0)
+    {
+        assert(ia[0] == 0);
+        assert(ia[N-1] == static_cast<value_type>(N-1));
+        assert(std::is_sorted(ia, ia+N));
+    }
+    delete [] ia;
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    test_one<Iter>(N, 0);
+    test_one<Iter>(N, N/4);
+    test_one<Iter>(N, N/2);
+    test_one<Iter>(N, 3*N/4);
+    test_one<Iter>(N, N);
+}
+
+template <class Iter>
+void
+test()
+{
+    test_one<Iter>(0, 0);
+    test_one<Iter>(1, 0);
+    test_one<Iter>(1, 1);
+    test_one<Iter>(2, 0);
+    test_one<Iter>(2, 1);
+    test_one<Iter>(2, 2);
+    test_one<Iter>(3, 0);
+    test_one<Iter>(3, 1);
+    test_one<Iter>(3, 2);
+    test_one<Iter>(3, 3);
+    test<Iter>(4);
+    test<Iter>(100);
+    test<Iter>(1000);
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+    test<bidirectional_iterator<S*> >();
+    test<random_access_iterator<S*> >();
+    test<S*>();
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/inplace_merge_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/inplace_merge_comp.pass.cpp
new file mode 100644
index 0000000..0d572fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/inplace_merge_comp.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   void
+//   inplace_merge(Iter first, Iter middle, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+#include <memory>
+
+struct indirect_less
+{
+    template <class P>
+    bool operator()(const P& x, const P& y)
+        {return *x < *y;}
+};
+
+struct S {
+    S() : i_(0) {}
+    S(int i) : i_(i) {}
+
+    S(const S&  rhs) : i_(rhs.i_) {}
+    S(      S&& rhs) : i_(rhs.i_) { rhs.i_ = -1; }
+
+    S& operator =(const S&  rhs) { i_ = rhs.i_;              return *this; }
+    S& operator =(      S&& rhs) { i_ = rhs.i_; rhs.i_ = -2; assert(this != &rhs); return *this; }
+    S& operator =(int i)         { i_ = i;                   return *this; }
+
+    bool operator  <(const S&  rhs) const { return i_ < rhs.i_; }
+    bool operator  >(const S&  rhs) const { return i_ > rhs.i_; }
+    bool operator ==(const S&  rhs) const { return i_ == rhs.i_; }
+    bool operator ==(int i)         const { return i_ == i; }
+
+    void set(int i) { i_ = i; }
+
+    int i_;
+    };
+
+
+#endif // TEST_STD_VER >= 11
+
+#include "test_iterators.h"
+#include "counting_predicates.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test_one(unsigned N, unsigned M)
+{
+    assert(M <= N);
+    typedef typename std::iterator_traits<Iter>::value_type value_type;
+    value_type* ia = new value_type[N];
+    for (unsigned i = 0; i < N; ++i)
+        ia[i] = i;
+    std::shuffle(ia, ia+N, randomness);
+    std::sort(ia, ia+M, std::greater<value_type>());
+    std::sort(ia+M, ia+N, std::greater<value_type>());
+    binary_counting_predicate<std::greater<value_type>, value_type, value_type> pred((std::greater<value_type>()));
+    std::inplace_merge(Iter(ia), Iter(ia+M), Iter(ia+N), std::ref(pred));
+    if(N > 0)
+    {
+        assert(ia[0] == static_cast<int>(N)-1);
+        assert(ia[N-1] == 0);
+        assert(std::is_sorted(ia, ia+N, std::greater<value_type>()));
+#ifndef _LIBCPP_ENABLE_DEBUG_MODE
+        assert(pred.count() <= (N-1));
+#endif
+    }
+    delete [] ia;
+}
+
+template <class Iter>
+void
+test(unsigned N)
+{
+    test_one<Iter>(N, 0);
+    test_one<Iter>(N, N/4);
+    test_one<Iter>(N, N/2);
+    test_one<Iter>(N, 3*N/4);
+    test_one<Iter>(N, N);
+}
+
+template <class Iter>
+void
+test()
+{
+    test_one<Iter>(0, 0);
+    test_one<Iter>(1, 0);
+    test_one<Iter>(1, 1);
+    test_one<Iter>(2, 0);
+    test_one<Iter>(2, 1);
+    test_one<Iter>(2, 2);
+    test_one<Iter>(3, 0);
+    test_one<Iter>(3, 1);
+    test_one<Iter>(3, 2);
+    test_one<Iter>(3, 3);
+    test<Iter>(4);
+    test<Iter>(20);
+    test<Iter>(100);
+    test<Iter>(1000);
+}
+
+struct less_by_first {
+  template <typename Pair>
+  bool operator()(const Pair& lhs, const Pair& rhs) {
+    return std::less<typename Pair::first_type>()(lhs.first, rhs.first);
+  }
+};
+
+void test_PR31166 ()
+{
+    typedef std::pair<int, int> P;
+    typedef std::vector<P> V;
+    P vec[5] = {P(1, 0), P(2, 0), P(2, 1), P(2, 2), P(2, 3)};
+    for ( int i = 0; i < 5; ++i ) {
+        V res(vec, vec + 5);
+        std::inplace_merge(res.begin(), res.begin() + i, res.end(), less_by_first());
+        assert(res.size() == 5);
+        assert(std::equal(res.begin(), res.end(), vec));
+    }
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 11
+    test<bidirectional_iterator<S*> >();
+    test<random_access_iterator<S*> >();
+    test<S*>();
+
+    {
+    int N = 100;
+    unsigned M = 50;
+    std::unique_ptr<int>* ia = new std::unique_ptr<int>[N];
+    for (int i = 0; i < N; ++i)
+        ia[i].reset(new int(i));
+    std::shuffle(ia, ia+N, randomness);
+    std::sort(ia, ia+M, indirect_less());
+    std::sort(ia+M, ia+N, indirect_less());
+    std::inplace_merge(ia, ia+M, ia+N, indirect_less());
+    if(N > 0)
+    {
+        assert(*ia[0] == 0);
+        assert(*ia[N-1] == N-1);
+        assert(std::is_sorted(ia, ia+N, indirect_less()));
+    }
+    delete [] ia;
+    }
+#endif // TEST_STD_VER >= 11
+
+    test_PR31166();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/merge.pass.cpp
new file mode 100644
index 0000000..e3e58c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/merge.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && HasLess<InIter2::value_type, InIter1::value_type>
+//         && HasLess<InIter1::value_type, InIter2::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   merge(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//         OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 33, 31, 32, 41, 43, 42, 52};
+        OutIter end = std::merge(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+9, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 32, 33, 31, 43, 42, 41, 52};
+        OutIter end = std::merge(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+9, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortable>();
+    test1<NonTrivialSortable>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp
new file mode 100644
index 0000000..9a855b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter,
+//          CopyConstructible Compare>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && Predicate<Compare, InIter1::value_type, InIter2::value_type>
+//         && Predicate<Compare, InIter2::value_type, InIter1::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   merge(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//         OutIter result, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 33, 31, 32, 41, 43, 42, 52};
+        OutIter end = std::merge(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+9, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 32, 33, 31, 43, 42, 41, 52};
+        OutIter end = std::merge(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+9, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortableWithComp>();
+    test1<NonTrivialSortableWithComp>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/ranges_inplace_merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/ranges_inplace_merge.pass.cpp
new file mode 100644
index 0000000..1602490
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/ranges_inplace_merge.pass.cpp
@@ -0,0 +1,340 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<bidirectional_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//          class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   I inplace_merge(I first, I middle, S last, Comp comp = {}, Proj proj = {});                    // Since C++20
+//
+// template<bidirectional_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   borrowed_iterator_t<R>
+//     inplace_merge(R&& r, iterator_t<R> middle, Comp comp = {},
+//                   Proj proj = {});                                                               // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <type_traits>
+
+#include "almost_satisfies_types.h"
+#include "counting_predicates.h"
+#include "counting_projection.h"
+#include "test_iterators.h"
+
+template < class Iter,
+           class Middle = Iter,
+           class Sent   = sentinel_wrapper<std::remove_cvref_t<Iter>>,
+           class Comp   = std::ranges::less,
+           class Proj   = std::identity>
+concept HasInplaceMergeIter =
+    requires(Iter&& iter, Middle&& mid, Sent&& sent, Comp&& comp, Proj&& proj) {
+      std::ranges::inplace_merge(
+          std::forward<Iter>(iter),
+          std::forward<Middle>(mid),
+          std::forward<Sent>(sent),
+          std::forward<Comp>(comp),
+          std::forward<Proj>(proj));
+    };
+
+static_assert(HasInplaceMergeIter<int*, int*, int*>);
+
+// !bidirectional_iterator<I>
+static_assert(!HasInplaceMergeIter<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasInplaceMergeIter<cpp20_input_iterator<int*>>);
+
+// !sentinel_for<S, I>
+static_assert(!HasInplaceMergeIter<int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasInplaceMergeIter<int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !sortable<I, Comp, Proj>
+static_assert(!HasInplaceMergeIter<int*, int*, int*, ComparatorNotCopyable<int*>>);
+static_assert(!HasInplaceMergeIter<const int*, const int*, const int*>);
+
+template < class Range,
+           class Middle = std::ranges::iterator_t<Range>,
+           class Comp   = std::ranges::less,
+           class Proj   = std::identity>
+concept HasInplaceMergeRange =
+    requires(Range&& r, Middle&& mid, Comp&& comp, Proj&& proj) {
+      std::ranges::inplace_merge(
+          std::forward<Range>(r), std::forward<Middle>(mid), std::forward<Comp>(comp), std::forward<Proj>(proj));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasInplaceMergeRange<R<int*>, int*>);
+
+// !bidirectional_range<R>
+static_assert(!HasInplaceMergeRange<R<cpp20_input_iterator<int*>>>);
+static_assert(!HasInplaceMergeRange<R<BidirectionalIteratorNotDecrementable>>);
+
+// !sortable<iterator_t<R>, Comp, Proj>
+static_assert(!HasInplaceMergeRange<R<int*>, int*, ComparatorNotCopyable<int*>>);
+static_assert(!HasInplaceMergeIter<R<const int*>, const int*>);
+
+template <class In, template <class> class SentWrapper, std::size_t N1, std::size_t N2>
+void testInplaceMergeImpl(std::array<int, N1> input, int midIdx, std::array<int, N2> expected) {
+  assert(std::is_sorted(input.begin(), input.begin() + midIdx));
+  assert(std::is_sorted(input.begin() + midIdx, input.end()));
+  assert(std::is_sorted(expected.begin(), expected.end()));
+
+  using Sent = SentWrapper<In>;
+
+  // iterator overload
+  {
+    auto in = input;
+    std::same_as<In> decltype(auto) result =
+        std::ranges::inplace_merge(In{in.data()}, In{in.data() + midIdx}, Sent{In{in.data() + in.size()}});
+    assert(std::ranges::equal(in, expected));
+    assert(base(result) == in.data() + in.size());
+  }
+
+  // range overload
+  {
+    auto in = input;
+    std::ranges::subrange r{In{in.data()}, Sent{In{in.data() + in.size()}}};
+    std::same_as<In> decltype(auto) result = std::ranges::inplace_merge(r, In{in.data() + midIdx});
+    assert(std::ranges::equal(in, expected));
+    assert(base(result) == in.data() + in.size());
+  }
+}
+
+template <class In, template <class> class SentWrapper>
+void testImpl() {
+  // sorted range
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    std::array expected = in;
+    testInplaceMergeImpl<In, SentWrapper>(in, 3, expected);
+  }
+
+  // [first, mid) is longer
+  {
+    std::array in{0, 5, 9, 15, 18, 22, 2, 4, 6, 10};
+    std::array expected = {0, 2, 4, 5, 6, 9, 10, 15, 18, 22};
+    testInplaceMergeImpl<In, SentWrapper>(in, 6, expected);
+  }
+
+  // [first, mid) is shorter
+  {
+    std::array in{0, 5, 9, 2, 4, 6, 10};
+    std::array expected = {0, 2, 4, 5, 6, 9, 10};
+    testInplaceMergeImpl<In, SentWrapper>(in, 3, expected);
+  }
+
+  // [first, mid) == [mid, last)
+  {
+    std::array in{0, 5, 9, 0, 5, 9};
+    std::array expected = {0, 0, 5, 5, 9, 9};
+    testInplaceMergeImpl<In, SentWrapper>(in, 3, expected);
+  }
+
+  // duplicates within each range
+  {
+    std::array in{1, 5, 5, 2, 9, 9, 9};
+    std::array expected = {1, 2, 5, 5, 9, 9, 9};
+    testInplaceMergeImpl<In, SentWrapper>(in, 3, expected);
+  }
+
+  // all the same
+  {
+    std::array in{5, 5, 5, 5, 5, 5, 5, 5};
+    std::array expected = in;
+    testInplaceMergeImpl<In, SentWrapper>(in, 5, expected);
+  }
+
+  // [first, mid) is empty (mid == begin)
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    std::array expected = in;
+    testInplaceMergeImpl<In, SentWrapper>(in, 0, expected);
+  }
+
+  // [mid, last] is empty (mid == end)
+  {
+    std::array in{0, 1, 5, 6, 9, 10};
+    std::array expected = in;
+    testInplaceMergeImpl<In, SentWrapper>(in, 6, expected);
+  }
+
+  // both empty
+  {
+    std::array<int, 0> in{};
+    std::array expected = in;
+    testInplaceMergeImpl<In, SentWrapper>(in, 0, expected);
+  }
+
+  // mid == first + 1
+  {
+    std::array in{9, 2, 5, 7, 10};
+    std::array expected{2, 5, 7, 9, 10};
+    testInplaceMergeImpl<In, SentWrapper>(in, 1, expected);
+  }
+
+  // mid == last - 1
+  {
+    std::array in{2, 5, 7, 10, 9};
+    std::array expected{2, 5, 7, 9, 10};
+    testInplaceMergeImpl<In, SentWrapper>(in, 4, expected);
+  }
+}
+
+template < template <class> class SentWrapper>
+void withAllPermutationsOfIter() {
+  testImpl<bidirectional_iterator<int*>, SentWrapper>();
+  testImpl<random_access_iterator<int*>, SentWrapper>();
+  testImpl<contiguous_iterator<int*>, SentWrapper>();
+  testImpl<int*, SentWrapper>();
+}
+
+bool test() {
+  withAllPermutationsOfIter<std::type_identity_t>();
+  withAllPermutationsOfIter<sentinel_wrapper>();
+
+  struct Data {
+    int data;
+  };
+
+  const auto equal = [](const Data& x, const Data& y) { return x.data == y.data; };
+  // Test custom comparator
+  {
+    std::array<Data, 4> input{{{4}, {8}, {2}, {5}}};
+    std::array<Data, 4> expected{{{2}, {4}, {5}, {8}}};
+    const auto comp = [](const Data& x, const Data& y) { return x.data < y.data; };
+
+    // iterator overload
+    {
+      auto in     = input;
+      auto result = std::ranges::inplace_merge(in.begin(), in.begin() + 2, in.end(), comp);
+      assert(std::ranges::equal(in, expected, equal));
+      assert(result == in.end());
+    }
+
+    // range overload
+    {
+      auto in     = input;
+      auto result = std::ranges::inplace_merge(in, in.begin() + 2, comp);
+      assert(std::ranges::equal(in, expected, equal));
+      assert(result == in.end());
+    }
+  }
+
+  // Test custom projection
+  {
+    std::array<Data, 4> input{{{4}, {8}, {2}, {5}}};
+    std::array<Data, 4> expected{{{2}, {4}, {5}, {8}}};
+
+    const auto proj = &Data::data;
+
+    // iterator overload
+    {
+      auto in     = input;
+      auto result = std::ranges::inplace_merge(in.begin(), in.begin() + 2, in.end(), {}, proj);
+      assert(std::ranges::equal(in, expected, equal));
+      assert(result == in.end());
+    }
+
+    // range overload
+    {
+      auto in     = input;
+      auto result = std::ranges::inplace_merge(in, in.begin() + 2, {}, proj);
+      assert(std::ranges::equal(in, expected, equal));
+      assert(result == in.end());
+    }
+  }
+
+  // Remarks: Stable.
+  {
+    struct IntAndID {
+      int data;
+      int id;
+      constexpr auto operator<=>(const IntAndID& rhs) const { return data <=> rhs.data; }
+      constexpr auto operator==(const IntAndID& rhs) const { return data == rhs.data; }
+    };
+    std::array<IntAndID, 6> input{{{0, 0}, {1, 0}, {2, 0}, {0, 1}, {1, 1}, {2, 1}}};
+
+    // iterator overload
+    {
+      auto in     = input;
+      auto result = std::ranges::inplace_merge(in.begin(), in.begin() + 3, in.end());
+      assert(std::ranges::equal(in, std::array{0, 0, 1, 1, 2, 2}, {}, &IntAndID::data));
+      assert(std::ranges::equal(in, std::array{0, 1, 0, 1, 0, 1}, {}, &IntAndID::id));
+      assert(result == in.end());
+    }
+
+    // range overload
+    {
+      auto in     = input;
+      auto result = std::ranges::inplace_merge(in, in.begin() + 3);
+      assert(std::ranges::equal(in, std::array{0, 0, 1, 1, 2, 2}, {}, &IntAndID::data));
+      assert(std::ranges::equal(in, std::array{0, 1, 0, 1, 0, 1}, {}, &IntAndID::id));
+      assert(result == in.end());
+    }
+  }
+
+  // Complexity: Let N = last - first :
+  //   - For the overloads with no ExecutionPolicy, and if enough
+  //     additional memory is available, exactly N - 1 comparisons.
+  //   - Otherwise, O(NlogN) comparisons.
+  // In either case, twice as many projections as comparisons.
+  {
+    std::array input{1, 2, 3, 3, 3, 7, 7, 2, 2, 5, 5, 6, 6};
+    std::array expected{1, 2, 2, 2, 3, 3, 3, 5, 5, 6, 6, 7, 7};
+    auto mid = 7;
+    // iterator overload
+    {
+      auto in          = input;
+      int numberOfComp = 0;
+      int numberOfProj = 0;
+      auto result      = std::ranges::inplace_merge(
+          in.begin(),
+          in.begin() + mid,
+          in.end(),
+          counting_predicate{std::ranges::less{}, numberOfComp},
+          counting_projection{numberOfProj});
+      assert(std::ranges::equal(in, expected));
+      assert(result == in.end());
+
+      // the spec specifies exactly N-1 comparison but we actually
+      // do not invoke as many times as specified
+      assert(numberOfComp <= static_cast<int>(in.size() - 1));
+      assert(numberOfProj <= 2 * numberOfComp);
+    }
+    // range overload
+    {
+      auto in          = input;
+      int numberOfComp = 0;
+      int numberOfProj = 0;
+      auto result      = std::ranges::inplace_merge(
+          in,
+          in.begin() + mid,
+          counting_predicate{std::ranges::less{}, numberOfComp},
+          counting_projection{numberOfProj});
+      assert(std::ranges::equal(in, expected));
+      assert(result == in.end());
+      assert(numberOfComp <= static_cast<int>(in.size() - 1));
+      assert(numberOfProj <= 2 * numberOfComp);
+    }
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  // inplace_merge is not constexpr in the latest finished Standard (C++20)
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/ranges_merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/ranges_merge.pass.cpp
new file mode 100644
index 0000000..711da55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.merge/ranges_merge.pass.cpp
@@ -0,0 +1,577 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          weakly_incrementable O, class Comp = ranges::less, class Proj1 = identity,
+//          class Proj2 = identity>
+//   requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
+//   constexpr merge_result<I1, I2, O>
+//     merge(I1 first1, S1 last1, I2 first2, S2 last2, O result,
+//           Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                                    // since C++20
+//
+// template<input_range R1, input_range R2, weakly_incrementable O, class Comp = ranges::less,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+//   constexpr merge_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
+//     merge(R1&& r1, R2&& r2, O result,
+//           Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                                    // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+#include "../sortable_helpers.h"
+
+// Test iterator overload's constraints:
+// =====================================
+template <
+    class InIter1,
+    class InIter2,
+    class OutIter,
+    class Sent1 = sentinel_wrapper<InIter1>,
+    class Sent2 = sentinel_wrapper<InIter2>>
+concept HasMergeIter =
+    requires(InIter1&& inIter1, InIter2&& inIter2, OutIter&& outIter, Sent1&& sent1, Sent2&& sent2) {
+      std::ranges::merge(
+          std::forward<InIter1>(inIter1),
+          std::forward<Sent1>(sent1),
+          std::forward<InIter2>(inIter2),
+          std::forward<Sent2>(sent2),
+          std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasMergeIter<int*, int*, int*, int*, int*>);
+
+// !std::input_iterator<I1>
+static_assert(!HasMergeIter<InputIteratorNotDerivedFrom, int*, int*>);
+
+// !std::sentinel_for<S1, I1>
+static_assert(!HasMergeIter<int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::input_iterator<I2>
+static_assert(!HasMergeIter<int*, InputIteratorNotDerivedFrom, int*>);
+
+// !std::sentinel_for<S2, I2>
+static_assert(!HasMergeIter<int*, int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasMergeIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// !std::mergeable<I1, I2, O, Comp, Proj1, Proj2>
+static_assert(!HasMergeIter<MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*>);
+
+// Test range overload's constraints:
+// =====================================
+
+template <class Range1, class Range2, class OutIter>
+concept HasMergeRange =
+    requires(Range1&& range1, Range2&& range2, OutIter&& outIter) {
+      std::ranges::merge(std::forward<Range1>(range1), std::forward<Range2>(range2), std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasMergeRange<UncheckedRange<int*>, UncheckedRange<int*>, int* >);
+
+// !std::input_range<R2>
+static_assert(!HasMergeRange<UncheckedRange<InputIteratorNotDerivedFrom>, UncheckedRange<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasMergeRange<UncheckedRange<int*>, UncheckedRange<InputIteratorNotDerivedFrom>, int*>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasMergeRange<UncheckedRange<int*>, UncheckedRange<int*>, WeaklyIncrementableNotMovable >);
+
+// !mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+static_assert(!HasMergeRange< UncheckedRange<MoveOnly*>, UncheckedRange<MoveOnly*>, MoveOnly*>);
+
+using std::ranges::merge_result;
+
+template <class In1, class In2, class Out, std::size_t N1, std::size_t N2>
+constexpr void testMergeImpl(std::array<int, N1> in1, std::array<int, N2> in2, const auto& expected) {
+  // TODO: std::ranges::merge calls std::ranges::copy
+  // std::ranges::copy(contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>, contiguous_iterator<int*>) doesn't seem to work.
+  // It seems that std::ranges::copy calls std::copy, which unwraps contiguous_iterator<int*> into int*,
+  // and then it failed because there is no == between int* and sentinel_wrapper<contiguous_iterator<int*>>
+  using Sent1 = std::conditional_t<std::contiguous_iterator<In1>, In1, sentinel_wrapper<In1>>;
+  using Sent2 = std::conditional_t<std::contiguous_iterator<In2>, In2, sentinel_wrapper<In2>>;
+
+  // iterator overload
+  {
+    std::array<int, N1 + N2> out;
+    std::same_as<merge_result<In1, In2, Out>> decltype(auto) result = std::ranges::merge(
+        In1{in1.data()},
+        Sent1{In1{in1.data() + in1.size()}},
+        In2{in2.data()},
+        Sent2{In2{in2.data() + in2.size()}},
+        Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N1 + N2> out;
+    std::ranges::subrange r1{In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}};
+    std::ranges::subrange r2{In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}}};
+    std::same_as<merge_result<In1, In2, Out>> decltype(auto) result = std::ranges::merge(r1, r2, Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class In1, class In2, class Out>
+constexpr void testImpl() {
+  // range 1 shorter than range2
+  {
+    std::array in1{0, 1, 5, 6, 9, 10};
+    std::array in2{3, 6, 7, 9, 13, 15, 100};
+    std::array expected{0, 1, 3, 5, 6, 6, 7, 9, 9, 10, 13, 15, 100};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 shorter than range 1
+  {
+    std::array in1{2, 6, 8, 12};
+    std::array in2{0, 1, 2};
+    std::array expected{0, 1, 2, 2, 6, 8, 12};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 == range 2
+  {
+    std::array in1{0, 1, 2};
+    std::array in2{0, 1, 2};
+    std::array expected{0, 0, 1, 1, 2, 2};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // All elements in range 1 are greater than every element in range 2
+  {
+    std::array in1{8, 8, 10, 12};
+    std::array in2{0, 0, 1};
+    std::array expected{0, 0, 1, 8, 8, 10, 12};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // All elements in range 2 are greater than every element in range 1
+  {
+    std::array in1{0, 1, 1};
+    std::array in2{7, 7};
+    std::array expected{0, 1, 1, 7, 7};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is empty
+  {
+    std::array<int, 0> in1{};
+    std::array in2{3, 4, 5};
+    std::array expected{3, 4, 5};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is empty
+  {
+    std::array in1{3, 4, 5};
+    std::array<int, 0> in2{};
+    std::array expected{3, 4, 5};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // both ranges are empty
+  {
+    std::array<int, 0> in1{};
+    std::array<int, 0> in2{};
+    std::array<int, 0> expected{};
+    testMergeImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // check that ranges::dangling is returned for non-borrowed_range and iterator_t is returned for borrowed_range
+  {
+    std::array r1{3, 6, 7, 9};
+    std::array r2{2, 3, 4};
+    std::array<int, 7> out;
+    std::same_as<merge_result<std::array<int, 4>::iterator, std::ranges::dangling, int*>> decltype(auto) result =
+        std::ranges::merge(r1, NonBorrowedRange<In2>{r2.data(), r2.size()}, out.data());
+    assert(base(result.in1) == r1.end());
+    assert(base(result.out) == out.data() + out.size());
+    assert(std::ranges::equal(out, std::array{2, 3, 3, 4, 6, 7, 9}));
+  }
+}
+
+template <class InIter2, class OutIter>
+constexpr void withAllPermutationsOfInIter1() {
+  testImpl<cpp20_input_iterator<int*>, InIter2, OutIter>();
+  testImpl<forward_iterator<int*>, InIter2, OutIter>();
+  testImpl<bidirectional_iterator<int*>, InIter2, OutIter>();
+  testImpl<random_access_iterator<int*>, InIter2, OutIter>();
+  testImpl<contiguous_iterator<int*>, InIter2, OutIter>();
+}
+
+template <class OutIter>
+constexpr bool withAllPermutationsOfInIter1AndInIter2() {
+  withAllPermutationsOfInIter1<cpp20_input_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<forward_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<bidirectional_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<random_access_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<contiguous_iterator<int*>, OutIter>();
+  return true;
+}
+
+constexpr void runAllIteratorPermutationsTests() {
+  withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>();
+
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>());
+}
+
+constexpr bool test() {
+  // check that every element is copied exactly once
+  {
+    std::array<TracedCopy, 3> r1{3, 5, 8};
+    std::array<TracedCopy, 3> r2{1, 3, 8};
+
+    // iterator overload
+    {
+      std::array<TracedCopy, 6> out;
+      auto result = std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 6>{1, 3, 3, 5, 8, 8}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+
+    // range overload
+    {
+      std::array<TracedCopy, 6> out;
+      auto result = std::ranges::merge(r1, r2, out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 6>{1, 3, 3, 5, 8, 8}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+  }
+
+  struct IntAndID {
+    int data;
+    int id;
+
+    constexpr auto operator==(const IntAndID& o) const { return data == o.data; }
+    constexpr auto operator<=>(const IntAndID& o) const { return data <=> o.data; }
+  };
+
+  // Algorithm is stable: equal elements should be merged in the original order
+  {
+    std::array<IntAndID, 3> r1{{{0, 0}, {0, 1}, {0, 2}}};
+    std::array<IntAndID, 3> r2{{{1, 0}, {1, 1}, {1, 2}}};
+
+    // iterator overload
+    {
+      std::array<IntAndID, 6> out;
+      std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 0, 1, 1, 1}, {}, &IntAndID::data));
+      // ID should be in their original order
+      assert(std::ranges::equal(out, std::array{0, 1, 2, 0, 1, 2}, {}, &IntAndID::id));
+    }
+
+    // range overload
+    {
+      std::array<IntAndID, 6> out;
+      std::ranges::merge(r1, r2, out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 0, 1, 1, 1}, {}, &IntAndID::data));
+      // ID should be in their original order
+      assert(std::ranges::equal(out, std::array{0, 1, 2, 0, 1, 2}, {}, &IntAndID::id));
+    }
+  }
+
+  // Equal elements in R1 should be merged before equal elements in R2
+  {
+    std::array<IntAndID, 3> r1{{{0, 1}, {1, 1}, {2, 1}}};
+    std::array<IntAndID, 3> r2{{{0, 2}, {1, 2}, {2, 2}}};
+
+    // iterator overload
+    {
+      std::array<IntAndID, 6> out;
+      std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 1, 1, 2, 2}, {}, &IntAndID::data));
+      // ID 1 (from R1) should be in front of ID 2 (from R2)
+      assert(std::ranges::equal(out, std::array{1, 2, 1, 2, 1, 2}, {}, &IntAndID::id));
+    }
+
+    // range overload
+    {
+      std::array<IntAndID, 6> out;
+      std::ranges::merge(r1, r2, out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 1, 1, 2, 2}, {}, &IntAndID::data));
+      // ID 1 (from R1) should be in front of ID 2 (from R2)
+      assert(std::ranges::equal(out, std::array{1, 2, 1, 2, 1, 2}, {}, &IntAndID::id));
+    }
+  }
+
+  struct Data {
+    int data;
+
+    constexpr bool smallerThan(const Data& o) const { return data < o.data; }
+  };
+
+  // Test custom comparator
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{5}, Data{9}};
+    using Iter1 = std::array<Data, 3>::iterator;
+    using Iter2 = std::array<Data, 2>::iterator;
+
+    // iterator overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), [](const Data& x, const Data& y) {
+            return x.data < y.data;
+          });
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1, r2, out.data(), [](const Data& x, const Data& y) { return x.data < y.data; });
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Comparator iterator overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), &Data::smallerThan);
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Comparator range overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1, r2, out.data(), &Data::smallerThan);
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Test Projection
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{5}, Data{9}};
+    using Iter1 = std::array<Data, 3>::iterator;
+    using Iter2 = std::array<Data, 2>::iterator;
+
+    const auto proj = [](const Data& d) { return d.data; };
+
+    // iterator overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1, r2, out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Projection iterator overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), {}, &Data::data, &Data::data);
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Projection range overload
+    {
+      std::array<Data, 5> out;
+      std::same_as<merge_result<Iter1, Iter2, Data*>> decltype(auto) result =
+          std::ranges::merge(r1, r2, out.data(), std::ranges::less{}, &Data::data, &Data::data);
+
+      assert(std::ranges::equal(out, std::array{4, 5, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Complexity: at most N - 1 comparisons and applications of each projection.
+  {
+    Data r1[] = {{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}};
+    Data r2[] = {{0}, {1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}};
+    std::array expected{0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9};
+
+    // iterator overload
+    {
+      std::array<Data, 20> out;
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      const auto comp = [&numberOfComp](int x, int y) {
+        ++numberOfComp;
+        return x < y;
+      };
+
+      const auto proj1 = [&numberOfProj1](const Data& d) {
+        ++numberOfProj1;
+        return d.data;
+      };
+
+      const auto proj2 = [&numberOfProj2](const Data& d) {
+        ++numberOfProj2;
+        return d.data;
+      };
+
+      std::ranges::merge(r1, r1 + 10, r2, r2 + 10, out.data(), comp, proj1, proj2);
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(numberOfComp < out.size());
+      assert(numberOfProj1 < out.size());
+      assert(numberOfProj2 < out.size());
+    }
+
+    // range overload
+    {
+      std::array<Data, 20> out;
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      const auto comp = [&numberOfComp](int x, int y) {
+        ++numberOfComp;
+        return x < y;
+      };
+
+      const auto proj1 = [&numberOfProj1](const Data& d) {
+        ++numberOfProj1;
+        return d.data;
+      };
+
+      const auto proj2 = [&numberOfProj2](const Data& d) {
+        ++numberOfProj2;
+        return d.data;
+      };
+
+      std::ranges::merge(r1, r2, out.data(), comp, proj1, proj2);
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(numberOfComp < out.size());
+      assert(numberOfProj1 < out.size());
+      assert(numberOfProj2 < out.size());
+    }
+  }
+
+  // Comparator convertible to bool
+  {
+    struct ConvertibleToBool {
+      bool b;
+      constexpr operator bool() const { return b; }
+    };
+    Data r1[] = {{2}, {4}};
+    Data r2[] = {{3}, {4}, {5}};
+
+    const auto comp = [](const Data& x, const Data& y) { return ConvertibleToBool{x.data < y.data}; };
+
+    // iterator overload
+    {
+      std::array<Data, 5> out;
+      std::ranges::merge(r1, r1 + 2, r2, r2 + 3, out.data(), comp);
+      assert(std::ranges::equal(out, std::array{2, 3, 4, 4, 5}, {}, &Data::data));
+    }
+
+    // range overload
+    {
+      std::array<Data, 5> out;
+      std::ranges::merge(r1, r2, out.data(), comp);
+      assert(std::ranges::equal(out, std::array{2, 3, 4, 4, 5}, {}, &Data::data));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  runAllIteratorPermutationsTests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max.pass.cpp
new file mode 100644
index 0000000..f52c72b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<LessThanComparable T>
+//   const T&
+//   max(const T& a, const T& b);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(const T& a, const T& b, const T& x)
+{
+    assert(&std::max(a, b) == &x);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, x);
+    test(y, x, y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, y);
+    test(y, x, y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, x);
+    test(y, x, x);
+    }
+#if TEST_STD_VER >= 14
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::max(x, y) == x, "" );
+    static_assert(std::max(y, x) == x, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_comp.pass.cpp
new file mode 100644
index 0000000..e554b3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_comp.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, StrictWeakOrder<auto, T> Compare>
+//   requires !SameType<T, Compare> && CopyConstructible<Compare>
+//   const T&
+//   max(const T& a, const T& b, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T, class C>
+void
+test(const T& a, const T& b, C c, const T& x)
+{
+    assert(&std::max(a, b, c) == &x);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, std::greater<int>(), y);
+    test(y, x, std::greater<int>(), y);
+    }
+#if TEST_STD_VER >= 14
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::max(x, y, std::greater<int>()) == y, "" );
+    static_assert(std::max(y, x, std::greater<int>()) == y, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_element.pass.cpp
new file mode 100644
index 0000000..db79601
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_element.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   Iter
+//   max_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::max_element(first, last);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!(*i < *j));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(int N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::shuffle(a, a+N, randomness);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+#if TEST_STD_VER >= 14
+constexpr int il[] = { 2, 4, 6, 8, 7, 5, 3, 1 };
+#endif
+
+void constexpr_test()
+{
+#if TEST_STD_VER >= 14
+    constexpr auto p = std::max_element(il,il+8);
+    static_assert ( *p == 8, "" );
+#endif
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+    constexpr_test ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_element_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_element_comp.pass.cpp
new file mode 100644
index 0000000..fbcea97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_element_comp.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   Iter
+//   max_element(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::max_element(first, last, std::greater<int>());
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!std::greater<int>()(*i, *j));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(int N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::shuffle(a, a+N, randomness);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+template <class Iter, class Pred>
+void test_eq0(Iter first, Iter last, Pred p)
+{
+    assert(first == std::max_element(first, last, p));
+}
+
+void test_eq()
+{
+    const int N = 10;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 10; // all the same
+    test_eq0(a, a+N, std::less<int>());
+    test_eq0(a, a+N, std::greater<int>());
+    delete [] a;
+}
+
+#if TEST_STD_VER >= 14
+constexpr int il[] = { 2, 4, 6, 8, 7, 5, 3, 1 };
+struct less { constexpr bool operator ()( const int &x, const int &y) const { return x < y; }};
+#endif
+
+void constexpr_test()
+{
+#if TEST_STD_VER >= 14
+    constexpr auto p = std::max_element(il, il+8, less());
+    static_assert ( *p == 8, "" );
+#endif
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test_eq();
+
+    constexpr_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_init_list.pass.cpp
new file mode 100644
index 0000000..215c0db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_init_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// template <class T>
+//   T
+//   max(initializer_list<T> t);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int i = std::max({2, 3, 1});
+    assert(i == 3);
+    i = std::max({2, 1, 3});
+    assert(i == 3);
+    i = std::max({3, 1, 2});
+    assert(i == 3);
+    i = std::max({3, 2, 1});
+    assert(i == 3);
+    i = std::max({1, 2, 3});
+    assert(i == 3);
+    i = std::max({1, 3, 2});
+    assert(i == 3);
+#if TEST_STD_VER >= 14
+    {
+    static_assert(std::max({1, 3, 2}) == 3, "");
+    static_assert(std::max({2, 1, 3}) == 3, "");
+    static_assert(std::max({3, 2, 1}) == 3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_init_list_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_init_list_comp.pass.cpp
new file mode 100644
index 0000000..8e4fc04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/max_init_list_comp.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// template<class T, class Compare>
+//   T
+//   max(initializer_list<T> t, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int i = std::max({2, 3, 1}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({2, 1, 3}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({3, 1, 2}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({3, 2, 1}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({1, 2, 3}, std::greater<int>());
+    assert(i == 1);
+    i = std::max({1, 3, 2}, std::greater<int>());
+    assert(i == 1);
+#if TEST_STD_VER >= 14
+    {
+    static_assert(std::max({1, 3, 2}, std::greater<int>()) == 1, "");
+    static_assert(std::max({2, 1, 3}, std::greater<int>()) == 1, "");
+    static_assert(std::max({3, 2, 1}, std::greater<int>()) == 1, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min.pass.cpp
new file mode 100644
index 0000000..533077a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<LessThanComparable T>
+//   const T&
+//   min(const T& a, const T& b);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(const T& a, const T& b, const T& x)
+{
+    assert(&std::min(a, b) == &x);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, x);
+    test(y, x, y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, x);
+    test(y, x, x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, y);
+    test(y, x, y);
+    }
+#if TEST_STD_VER >= 14
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::min(x, y) == y, "" );
+    static_assert(std::min(y, x) == y, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_comp.pass.cpp
new file mode 100644
index 0000000..4524fe4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_comp.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, StrictWeakOrder<auto, T> Compare>
+//   requires !SameType<T, Compare> && CopyConstructible<Compare>
+//   const T&
+//   min(const T& a, const T& b, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T, class C>
+void
+test(const T& a, const T& b, C c, const T& x)
+{
+    assert(&std::min(a, b, c) == &x);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), y);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, std::greater<int>(), y);
+    test(y, x, std::greater<int>(), y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, std::greater<int>(), x);
+    test(y, x, std::greater<int>(), x);
+    }
+#if TEST_STD_VER >= 14
+    {
+    constexpr int x = 1;
+    constexpr int y = 0;
+    static_assert(std::min(x, y, std::greater<int>()) == x, "" );
+    static_assert(std::min(y, x, std::greater<int>()) == x, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_element.pass.cpp
new file mode 100644
index 0000000..e2d5ede
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_element.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   Iter
+//   min_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::min_element(first, last);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!(*j < *i));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(int N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::shuffle(a, a+N, randomness);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+#if TEST_STD_VER >= 14
+constexpr int il[] = { 2, 4, 6, 8, 7, 5, 3, 1 };
+#endif
+
+void constexpr_test()
+{
+#if TEST_STD_VER >= 14
+    constexpr auto p = std::min_element(il, il+8);
+    static_assert ( *p == 1, "" );
+#endif
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+    constexpr_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_element_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_element_comp.pass.cpp
new file mode 100644
index 0000000..cada8b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_element_comp.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   Iter
+//   min_element(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    Iter i = std::min_element(first, last, std::greater<int>());
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+            assert(!std::greater<int>()(*j, *i));
+    }
+    else
+        assert(i == last);
+}
+
+template <class Iter>
+void
+test(int N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::shuffle(a, a+N, randomness);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+}
+
+template <class Iter, class Pred>
+void test_eq0(Iter first, Iter last, Pred p)
+{
+    assert(first == std::min_element(first, last, p));
+}
+
+void test_eq()
+{
+    const int N = 10;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 10; // all the same
+    test_eq0(a, a+N, std::less<int>());
+    test_eq0(a, a+N, std::greater<int>());
+    delete [] a;
+}
+
+#if TEST_STD_VER >= 14
+constexpr int il[] = { 2, 4, 6, 8, 7, 5, 3, 1 };
+struct less { constexpr bool operator ()( const int &x, const int &y) const { return x < y; }};
+#endif
+
+void constexpr_test()
+{
+#if TEST_STD_VER >= 14
+    constexpr auto p = std::min_element(il, il+8, less());
+    static_assert(*p == 1, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test_eq();
+
+    constexpr_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_init_list.pass.cpp
new file mode 100644
index 0000000..1f3fd7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_init_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// template<class T>
+//   T
+//   min(initializer_list<T> t);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int i = std::min({2, 3, 1});
+    assert(i == 1);
+    i = std::min({2, 1, 3});
+    assert(i == 1);
+    i = std::min({3, 1, 2});
+    assert(i == 1);
+    i = std::min({3, 2, 1});
+    assert(i == 1);
+    i = std::min({1, 2, 3});
+    assert(i == 1);
+    i = std::min({1, 3, 2});
+    assert(i == 1);
+#if TEST_STD_VER >= 14
+    {
+    static_assert(std::min({1, 3, 2}) == 1, "");
+    static_assert(std::min({2, 1, 3}) == 1, "");
+    static_assert(std::min({3, 2, 1}) == 1, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_init_list_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_init_list_comp.pass.cpp
new file mode 100644
index 0000000..f91b925
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/min_init_list_comp.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// template<class T, class Compare>
+//   T
+//   min(initializer_list<T> t, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int i = std::min({2, 3, 1}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({2, 1, 3}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({3, 1, 2}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({3, 2, 1}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({1, 2, 3}, std::greater<int>());
+    assert(i == 3);
+    i = std::min({1, 3, 2}, std::greater<int>());
+    assert(i == 3);
+#if TEST_STD_VER >= 14
+    {
+    static_assert(std::min({1, 3, 2}, std::greater<int>()) == 3, "");
+    static_assert(std::min({2, 1, 3}, std::greater<int>()) == 3, "");
+    static_assert(std::min({3, 2, 1}, std::greater<int>()) == 3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp
new file mode 100644
index 0000000..a5b7b22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<LessThanComparable T>
+//   pair<const T&, const T&>
+//   minmax(const T& a, const T& b);
+
+#include <algorithm>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(const T& a, const T& b, const T& x, const T& y)
+{
+    std::pair<const T&, const T&> p = std::minmax(a, b);
+    assert(&p.first == &x);
+    assert(&p.second == &y);
+}
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, x, y);
+    test(y, x, y, x);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, x, y);
+    test(y, x, x, y);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, y, x);
+    test(y, x, y, x);
+    }
+#if TEST_STD_VER >= 14
+    {
+//  Note that you can't take a reference to a local var, since
+//  its address is not a compile-time constant.
+    constexpr static int x = 1;
+    constexpr static int y = 0;
+    constexpr auto p1 = std::minmax (x, y);
+    static_assert(p1.first  == y, "");
+    static_assert(p1.second == x, "");
+    constexpr auto p2 = std::minmax (y, x);
+    static_assert(p2.first  == y, "");
+    static_assert(p2.second == x, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_comp.pass.cpp
new file mode 100644
index 0000000..0f51df2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_comp.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<class T, StrictWeakOrder<auto, T> Compare>
+//   requires !SameType<T, Compare> && CopyConstructible<Compare>
+//   pair<const T&, const T&>
+//   minmax(const T& a, const T& b, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T, class C>
+void
+test(const T& a, const T& b, C c, const T& x, const T& y)
+{
+    std::pair<const T&, const T&> p = std::minmax(a, b, c);
+    assert(&p.first == &x);
+    assert(&p.second == &y);
+}
+
+
+int main(int, char**)
+{
+    {
+    int x = 0;
+    int y = 0;
+    test(x, y, std::greater<int>(), x, y);
+    test(y, x, std::greater<int>(), y, x);
+    }
+    {
+    int x = 0;
+    int y = 1;
+    test(x, y, std::greater<int>(), y, x);
+    test(y, x, std::greater<int>(), y, x);
+    }
+    {
+    int x = 1;
+    int y = 0;
+    test(x, y, std::greater<int>(), x, y);
+    test(y, x, std::greater<int>(), x, y);
+    }
+#if TEST_STD_VER >= 14
+    {
+//  Note that you can't take a reference to a local var, since
+//  its address is not a compile-time constant.
+    constexpr static int x = 1;
+    constexpr static int y = 0;
+    constexpr auto p1 = std::minmax(x, y, std::greater<>());
+    static_assert(p1.first  == x, "");
+    static_assert(p1.second == y, "");
+    constexpr auto p2 = std::minmax(y, x, std::greater<>());
+    static_assert(p2.first  == x, "");
+    static_assert(p2.second == y, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_element.pass.cpp
new file mode 100644
index 0000000..7ea8bed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_element.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   pair<Iter, Iter>
+//   minmax_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    std::pair<Iter, Iter> p = std::minmax_element(first, last);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+        {
+            assert(!(*j < *p.first));
+            assert(!(*p.second < *j));
+        }
+    }
+    else
+    {
+        assert(p.first == last);
+        assert(p.second == last);
+    }
+}
+
+template <class Iter>
+void
+test(int N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::shuffle(a, a+N, randomness);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+    {
+    const int N = 100;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 5;
+    std::shuffle(a, a+N, randomness);
+    std::pair<Iter, Iter> p = std::minmax_element(Iter(a), Iter(a+N));
+    assert(base(p.first) == a);
+    assert(base(p.second) == a+N-1);
+    delete [] a;
+    }
+}
+
+#if TEST_STD_VER >= 14
+constexpr int il[] = { 2, 4, 6, 8, 7, 5, 3, 1 };
+#endif
+
+void constexpr_test()
+{
+#if TEST_STD_VER >= 14
+    constexpr auto p = std::minmax_element(il, il+8);
+    static_assert ( *(p.first)  == 1, "" );
+    static_assert ( *(p.second) == 8, "" );
+#endif
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+   constexpr_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_element_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_element_comp.pass.cpp
new file mode 100644
index 0000000..3ecc02c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_element_comp.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   pair<Iter, Iter>
+//   minmax_element(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+std::mt19937 randomness;
+
+template <class Iter>
+void
+test(Iter first, Iter last)
+{
+    typedef std::greater<int> Compare;
+    Compare comp;
+    std::pair<Iter, Iter> p = std::minmax_element(first, last, comp);
+    if (first != last)
+    {
+        for (Iter j = first; j != last; ++j)
+        {
+            assert(!comp(*j, *p.first));
+            assert(!comp(*p.second, *j));
+        }
+    }
+    else
+    {
+        assert(p.first == last);
+        assert(p.second == last);
+    }
+}
+
+template <class Iter>
+void
+test(int N)
+{
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = i;
+    std::shuffle(a, a+N, randomness);
+    test(Iter(a), Iter(a+N));
+    delete [] a;
+}
+
+template <class Iter>
+void
+test()
+{
+    test<Iter>(0);
+    test<Iter>(1);
+    test<Iter>(2);
+    test<Iter>(3);
+    test<Iter>(10);
+    test<Iter>(1000);
+    {
+    const int N = 100;
+    int* a = new int[N];
+    for (int i = 0; i < N; ++i)
+        a[i] = 5;
+    std::shuffle(a, a+N, randomness);
+    typedef std::greater<int> Compare;
+    Compare comp;
+    std::pair<Iter, Iter> p = std::minmax_element(Iter(a), Iter(a+N), comp);
+    assert(base(p.first) == a);
+    assert(base(p.second) == a+N-1);
+    delete [] a;
+    }
+}
+
+#if TEST_STD_VER >= 14
+constexpr int il[] = { 2, 4, 6, 8, 7, 5, 3, 1 };
+struct less { constexpr bool operator ()( const int &x, const int &y) const { return x < y; }};
+#endif
+
+void constexpr_test()
+{
+#if TEST_STD_VER >= 14
+    constexpr auto p = std::minmax_element(il, il+8, less());
+    static_assert ( *(p.first)  == 1, "" );
+    static_assert ( *(p.second) == 8, "" );
+#endif
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+    constexpr_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp
new file mode 100644
index 0000000..b1df77a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// template<class T>
+//   pair<T, T>
+//   minmax(initializer_list<T> t);
+
+#include <algorithm>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert((std::minmax({1, 2, 3}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({1, 3, 2}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({2, 1, 3}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({2, 3, 1}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({3, 1, 2}) == std::pair<int, int>(1, 3)));
+    assert((std::minmax({3, 2, 1}) == std::pair<int, int>(1, 3)));
+#if TEST_STD_VER >= 14
+    {
+    static_assert((std::minmax({1, 2, 3}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({1, 3, 2}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({2, 1, 3}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({2, 3, 1}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({3, 1, 2}) == std::pair<int, int>(1, 3)), "");
+    static_assert((std::minmax({3, 2, 1}) == std::pair<int, int>(1, 3)), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list_comp.pass.cpp
new file mode 100644
index 0000000..916f704
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/minmax_init_list_comp.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+// template<class T, class Compare>
+//   pair<T, T>
+//   minmax(initializer_list<T> t, Compare comp);
+//
+//  Complexity: At most (3/2) * t.size() applications of the corresponding predicate.
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "counting_predicates.h"
+
+bool all_equal(int, int) { return false; } // everything is equal
+
+void test_all_equal(std::initializer_list<int> il)
+{
+    binary_counting_predicate<bool(*)(int, int), int, int> pred (all_equal);
+    std::pair<int, int> p = std::minmax(il, std::ref(pred));
+    const int *ptr = il.end();
+    assert(p.first == *il.begin());
+    assert(p.second == *--ptr);
+    assert(pred.count() <= ((3 * il.size()) / 2));
+}
+
+int main(int, char**)
+{
+    assert((std::minmax({1, 2, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({1, 3, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({2, 1, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({2, 3, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({3, 1, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({3, 2, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)));
+    assert((std::minmax({1, 2, 3}, all_equal          ) == std::pair<int, int>(1, 3)));
+
+    binary_counting_predicate<std::greater<int>, int, int> pred ((std::greater<int>()));
+    assert((std::minmax({1, 2, 2, 3, 3, 3, 5, 5, 5, 5, 5, 3}, std::ref(pred)) == std::pair<int, int>(5, 1)));
+    assert(pred.count() <= 18); // size == 12
+
+    test_all_equal({0});
+    test_all_equal({0,1});
+    test_all_equal({0,1,2});
+    test_all_equal({0,1,2,3});
+    test_all_equal({0,1,2,3,4});
+    test_all_equal({0,1,2,3,4,5});
+    test_all_equal({0,1,2,3,4,5,6});
+    test_all_equal({0,1,2,3,4,5,6,7});
+    test_all_equal({0,1,2,3,4,5,6,7,8});
+    test_all_equal({0,1,2,3,4,5,6,7,8,9});
+    test_all_equal({0,1,2,3,4,5,6,7,8,9,10});
+    test_all_equal({0,1,2,3,4,5,6,7,8,9,10,11});
+
+#if TEST_STD_VER >= 14
+    {
+    static_assert((std::minmax({1, 2, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({1, 3, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({2, 1, 3}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({2, 3, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({3, 1, 2}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    static_assert((std::minmax({3, 2, 1}, std::greater<int>()) == std::pair<int, int>(3, 1)), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.max.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.max.pass.cpp
new file mode 100644
index 0000000..3e0d82d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.max.pass.cpp
@@ -0,0 +1,261 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr const T& ranges::max(const T& a, const T& b, Comp comp = {}, Proj proj = {});
+//
+// template<copyable T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr T ranges::max(initializer_list<T> r, Comp comp = {}, Proj proj = {});
+//
+// template<input_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   requires indirectly_copyable_storable<iterator_t<R>, range_value_t<R>*>
+//   constexpr range_value_t<R>
+//     ranges::max(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class T>
+concept HasMaxR = requires { std::ranges::max(std::declval<T>()); };
+
+struct NoLessThanOp {};
+struct NotTotallyOrdered {
+  int i;
+  bool operator<(const NotTotallyOrdered& o) const { return i < o.i; }
+};
+
+struct Movable {
+  Movable& operator=(Movable&&) = default;
+  Movable(Movable&&) = default;
+  Movable(const Movable&) = delete;
+};
+
+static_assert(!HasMaxR<int>);
+
+static_assert(HasMaxR<int(&)[10]>);
+static_assert(HasMaxR<int(&&)[10]>);
+static_assert(!HasMaxR<NoLessThanOp(&)[10]>);
+static_assert(!HasMaxR<NotTotallyOrdered(&)[10]>);
+static_assert(!HasMaxR<Movable(&)[10]>);
+
+static_assert(HasMaxR<std::initializer_list<int>>);
+static_assert(!HasMaxR<std::initializer_list<NoLessThanOp>>);
+static_assert(!HasMaxR<std::initializer_list<NotTotallyOrdered>>);
+static_assert(!HasMaxR<std::initializer_list<Movable>>);
+static_assert(!HasMaxR<InputRangeNotDerivedFrom>);
+static_assert(!HasMaxR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasMaxR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasMaxR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasMaxR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class T, class U = T>
+concept HasMax2 = requires { std::ranges::max(std::declval<T>(), std::declval<U>()); };
+
+static_assert(HasMax2<int>);
+static_assert(!HasMax2<int, long>);
+
+static_assert(std::is_same_v<decltype(std::ranges::max(1, 2)), const int&>);
+
+constexpr void test_2_arguments() {
+  assert(std::ranges::max(1, 2) == 2);
+  assert(std::ranges::max(2, 1) == 2);
+  // test comparator
+  assert(std::ranges::max(1, 2, std::ranges::greater{}) == 1);
+  // test projection
+  assert(std::ranges::max(1, 2, std::ranges::less{}, [](int i){ return i == 1 ? 10 : i; }) == 1);
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S a[3] = { S{2}, S{1}, S{3} };
+    decltype(auto) ret = std::ranges::max(a[0], a[1], {}, &S::i);
+    ASSERT_SAME_TYPE(decltype(ret), const S&);
+    assert(&ret == &a[0]);
+    assert(ret.i == 2);
+  }
+
+  { // check that pointers are compared and not a range
+    int i[1];
+    int* a[] = {i, i + 1};
+    auto ret = std::ranges::max(a[0], a[1]);
+    assert(ret == i + 1);
+  }
+
+  { // test predicate and projection count
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int x, int y) {
+      ++compares;
+      return x < y;
+    };
+    auto projection = [&](int x) {
+      ++projections;
+      return x;
+    };
+    auto ret = std::ranges::max(1, 2, comparator, projection);
+    assert(ret == 2);
+    assert(compares == 1);
+    assert(projections == 2);
+  }
+
+  { // check that the first argument is returned
+    struct S { int check; int other; };
+    auto ret = std::ranges::max(S {0, 1}, S {0, 2}, {}, &S::check);
+    assert(ret.other == 1);
+  }
+}
+
+constexpr void test_initializer_list() {
+  { // test projection
+    auto proj = [](int i) { return i == 5 ? 100 : i; };
+    int ret = std::ranges::max({7, 6, 9, 3, 5, 1, 2, 4}, {}, proj);
+    assert(ret == 5);
+  }
+
+  { // test comparator
+    int ret = std::ranges::max({7, 6, 9, 3, 5, 1, 2, 4}, std::ranges::greater{});
+    assert(ret == 1);
+  }
+
+  { // check that complexity requirements are met
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int a, int b) {
+      ++compares;
+      return a < b;
+    };
+    auto projection = [&](int a) {
+      ++projections;
+      return a;
+    };
+    std::same_as<int> decltype(auto) ret = std::ranges::max({1, 2, 3}, comparator, projection);
+    assert(ret == 3);
+    assert(compares == 2);
+    assert(projections == 4);
+  }
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    std::same_as<S> decltype(auto) ret = std::ranges::max({ S{2}, S{1}, S{3} }, {}, &S::i);
+    assert(ret.i == 3);
+  }
+
+  { // check that the first largest element is returned
+    { // where the first element is the largest
+      struct S { int check; int other; };
+      auto ret = std::ranges::max({ S{1, 1}, S{0, 2}, S{1, 3} }, {}, &S::check);
+      assert(ret.check == 1);
+      assert(ret.other == 1);
+    }
+    { // where the first element isn't the largest
+      struct S { int check; int other; };
+      auto ret = std::ranges::max({ S{0, 1}, S{1, 2}, S{1, 3} }, {}, &S::check);
+      assert(ret.check == 1);
+      assert(ret.other == 2);
+    }
+  }
+}
+
+template <class It, class Sent = It>
+constexpr void test_range_types() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  auto range = std::ranges::subrange(It(a), Sent(It(a + 8)));
+  int ret = std::ranges::max(range);
+  assert(ret == 9);
+}
+
+constexpr void test_range() {
+  { // check that all range types work
+    test_range_types<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+    test_range_types<forward_iterator<int*>>();
+    test_range_types<bidirectional_iterator<int*>>();
+    test_range_types<random_access_iterator<int*>>();
+    test_range_types<contiguous_iterator<int*>>();
+  }
+
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  { // test projection
+    auto proj = [](int& i) { return i == 5 ? 100 : i; };
+    int ret = std::ranges::max(a, std::ranges::less{}, proj);
+    assert(ret == 5);
+  }
+
+  { // test comparator
+    int ret = std::ranges::max(a, std::ranges::greater{});
+    assert(ret == 1);
+  }
+
+  { // check that predicate and projection call counts are correct
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int x, int y) {
+      ++compares;
+      return x < y;
+    };
+    auto projection = [&](int x) {
+      ++projections;
+      return x;
+    };
+    std::same_as<int> decltype(auto) ret = std::ranges::max(std::array{1, 2, 3}, comparator, projection);
+    assert(ret == 3);
+    assert(compares == 2);
+    assert(projections == 4);
+  }
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S b[3] = { S{2}, S{1}, S{3} };
+    std::same_as<S> decltype(auto) ret = std::ranges::max(b, {}, &S::i);
+    assert(ret.i == 3);
+  }
+
+  { // check that the first largest element is returned
+    { // where the first element is the largest
+      struct S { int check; int other; };
+      S b[] = { S{1, 1}, S{0, 2}, S{1, 3} };
+      auto ret = std::ranges::max(b, {}, &S::check);
+      assert(ret.check == 1);
+      assert(ret.other == 1);
+    }
+    { // where the first element isn't the largest
+      struct S { int check; int other; };
+      S b[] = { S{0, 1}, S{1, 2}, S{1, 3} };
+      auto ret = std::ranges::max(b, {}, &S::check);
+      assert(ret.check == 1);
+      assert(ret.other == 2);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_2_arguments();
+  test_initializer_list();
+  test_range();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.max_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.max_element.pass.cpp
new file mode 100644
index 0000000..97f47a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.max_element.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//    indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//  constexpr I ranges::max_element(I first, S last, Comp comp = {}, Proj proj = {});
+//
+//  template<forward_range R, class Proj = identity,
+//    indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//  constexpr borrowed_iterator_t<R> ranges::max_element(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <random>
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class T>
+concept HasMaxElement = requires (T t) { std::ranges::max_element(t); };
+
+struct NoLessThanOp {};
+struct NotTotallyOrdered {
+  int i;
+  bool operator<(const NotTotallyOrdered& o) const { return i < o.i; }
+};
+
+static_assert(HasMaxElement<std::array<int, 0>>);
+static_assert(!HasMaxElement<int>);
+static_assert(!HasMaxElement<NoLessThanOp>);
+static_assert(!HasMaxElement<NotTotallyOrdered>);
+
+template <class Iter>
+constexpr void test_iterators(Iter first, Iter last) {
+  std::same_as<Iter> auto it = std::ranges::max_element(first, last);
+  if (first != last) {
+    for (Iter j = first; j != last; ++j)
+      assert(!(*j > *it));
+  } else {
+    assert(it == first);
+  }
+}
+
+template <class Range, class Iter>
+constexpr void test_range(Range&& rng, Iter begin, Iter end) {
+  std::same_as<Iter> auto it = std::ranges::max_element(std::forward<Range>(rng));
+  if (begin != end) {
+    for (Iter j = begin; j != end; ++j)
+      assert(!(*j > *it));
+  } else {
+    assert(it == begin);
+  }
+}
+
+template <class It>
+constexpr void test(std::initializer_list<int> a, int expected) {
+  const int* first = a.begin();
+  const int* last = a.end();
+  {
+    std::same_as<It> auto it = std::ranges::max_element(It(first), It(last));
+    assert(base(it) == first + expected);
+  }
+  {
+    using Sent = sentinel_wrapper<It>;
+    std::same_as<It> auto it = std::ranges::max_element(It(first), Sent(It(last)));
+    assert(base(it) == first + expected);
+  }
+  {
+    auto range = std::ranges::subrange(It(first), It(last));
+    std::same_as<It> auto it = std::ranges::max_element(range);
+    assert(base(it) == first + expected);
+  }
+  {
+    using Sent = sentinel_wrapper<It>;
+    auto range = std::ranges::subrange(It(first), Sent(It(last)));
+    std::same_as<It> auto it = std::ranges::max_element(range);
+    assert(base(it) == first + expected);
+  }
+}
+
+template <class It>
+constexpr bool test() {
+  test<It>({}, 0);
+  test<It>({1}, 0);
+  test<It>({1, 2}, 1);
+  test<It>({2, 1}, 0);
+  test<It>({2, 1, 2}, 0);
+  test<It>({2, 1, 1}, 0);
+
+  return true;
+}
+
+constexpr void test_borrowed_range_and_sentinel() {
+  int a[] = {7, 6, 1, 3, 5, 1, 2, 4};
+
+  int* ret = std::ranges::max_element(std::views::all(a));
+  assert(ret == a + 0);
+  assert(*ret == 7);
+}
+
+constexpr void test_comparator() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  int* ret = std::ranges::max_element(a, std::ranges::greater{});
+  assert(ret == a + 5);
+  assert(*ret == 1);
+}
+
+constexpr void test_projection() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  {
+    int* ret = std::ranges::max_element(a, std::ranges::less{}, [](int i) { return i == 5 ? 100 : i; });
+    assert(ret == a + 4);
+    assert(*ret == 5);
+  }
+  {
+    int* ret = std::ranges::max_element(a, std::less<int*>{}, [](int& i) { return &i; });
+    assert(ret == a + 7);
+    assert(*ret == 4);
+  }
+}
+
+struct Immobile {
+  int i;
+
+  constexpr Immobile(int i_) : i(i_) {}
+  Immobile(const Immobile&) = delete;
+  Immobile(Immobile&&) = delete;
+
+  auto operator<=>(const Immobile&) const = default;
+};
+
+constexpr void test_immobile() {
+
+  Immobile arr[] {1, 2, 3};
+  assert(std::ranges::max_element(arr) == arr);
+  assert(std::ranges::max_element(arr, arr + 3) == arr);
+}
+
+constexpr void test_dangling() {
+  int compares = 0;
+  int projections = 0;
+  auto comparator = [&](int a, int b) {
+    ++compares;
+    return a < b;
+  };
+  auto projection = [&](int a) {
+    ++projections;
+    return a;
+  };
+  [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret =
+      std::ranges::max_element(std::array{1, 2, 3}, comparator, projection);
+  assert(compares == 2);
+  assert(projections == 4);
+}
+
+constexpr bool test() {
+
+  test<forward_iterator<const int*>>();
+  test<bidirectional_iterator<const int*>>();
+  test<random_access_iterator<const int*>>();
+  test<const int*>();
+
+  int a[] = {7, 6, 5, 3, 4, 2, 1, 8};
+  test_iterators(a, a + 8);
+  int a2[] = {7, 6, 5, 3, 4, 2, 1, 8};
+  test_range(a2, a2, a2 + 8);
+
+  test_borrowed_range_and_sentinel();
+  test_comparator();
+  test_projection();
+  test_dangling();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.min.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.min.pass.cpp
new file mode 100644
index 0000000..a211fe6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.min.pass.cpp
@@ -0,0 +1,258 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr const T& ranges::min(const T& a, const T& b, Comp comp = {}, Proj proj = {});
+// template<copyable T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr T ranges::min(initializer_list<T> r, Comp comp = {}, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   requires indirectly_copyable_storable<iterator_t<R>, range_value_t<R>*>
+//   constexpr range_value_t<R>
+//     ranges::min(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class T>
+concept HasMinR = requires { std::ranges::min(std::declval<T>()); };
+
+struct NoLessThanOp {};
+struct NotTotallyOrdered {
+  int i;
+  bool operator<(const NotTotallyOrdered& o) const { return i < o.i; }
+};
+
+struct Movable {
+  Movable& operator=(Movable&&) = default;
+  Movable(Movable&&) = default;
+  Movable(const Movable&) = delete;
+};
+
+static_assert(!HasMinR<int>);
+
+static_assert(HasMinR<int(&)[10]>);
+static_assert(HasMinR<int(&&)[10]>);
+static_assert(!HasMinR<NoLessThanOp(&)[10]>);
+static_assert(!HasMinR<NotTotallyOrdered(&)[10]>);
+static_assert(!HasMinR<Movable(&)[10]>);
+
+static_assert(HasMinR<std::initializer_list<int>>);
+static_assert(!HasMinR<std::initializer_list<NoLessThanOp>>);
+static_assert(!HasMinR<std::initializer_list<NotTotallyOrdered>>);
+static_assert(!HasMinR<std::initializer_list<Movable>>);
+static_assert(!HasMinR<InputRangeNotDerivedFrom>);
+static_assert(!HasMinR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasMinR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasMinR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasMinR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class T, class U = T>
+concept HasMin2 = requires { std::ranges::min(std::declval<T>(), std::declval<U>()); };
+
+static_assert(HasMin2<int>);
+static_assert(!HasMin2<int, long>);
+
+static_assert(std::is_same_v<decltype(std::ranges::min(1, 2)), const int&>);
+
+constexpr void test_2_arguments() {
+  assert(std::ranges::min(1, 2) == 1);
+  assert(std::ranges::min(2, 1) == 1);
+  // test comparator
+  assert(std::ranges::min(1, 2, std::ranges::greater{}) == 2);
+  // test projection
+  assert(std::ranges::min(1, 2, std::ranges::less{}, [](int i){ return i == 1 ? 10 : i; }) == 2);
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S a[3] = { S{2}, S{1}, S{3} };
+    decltype(auto) ret = std::ranges::min(a[0], a[1], {}, &S::i);
+    ASSERT_SAME_TYPE(decltype(ret), const S&);
+    assert(&ret == &a[1]);
+    assert(ret.i == 1);
+  }
+
+  { // check that pointers are compared and not a range
+    int i;
+    int* a[] = {&i, &i + 1};
+    auto ret = std::ranges::min(a[0], a[1]);
+    assert(ret == &i);
+  }
+
+  { // test predicate and projection count
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int x, int y) {
+      ++compares;
+      return x < y;
+    };
+    auto projection = [&](int x) {
+      ++projections;
+      return x;
+    };
+    auto ret = std::ranges::min(1, 2, comparator, projection);
+    assert(ret == 1);
+    assert(compares == 1);
+    assert(projections == 2);
+  }
+
+  { // check that the first argument is returned
+    struct S { int check; int other; };
+    auto ret = std::ranges::min(S {0, 1}, S {0, 2}, {}, &S::check);
+    assert(ret.other == 1);
+  }
+}
+
+constexpr void test_initializer_list() {
+  {
+    // test projection
+    auto proj = [](int i) { return i == 5 ? -100 : i; };
+    int ret = std::ranges::min({7, 6, 9, 3, 5, 1, 2, 4}, std::ranges::less{}, proj);
+    assert(ret == 5);
+  }
+
+  {
+    // test comparator
+    int ret = std::ranges::min({7, 6, 9, 3, 5, 1, 2, 4}, std::ranges::greater{});
+    assert(ret == 9);
+  }
+
+  {
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int a, int b) {
+      ++compares;
+      return a < b;
+    };
+    auto projection = [&](int a) {
+      ++projections;
+      return a;
+    };
+    std::same_as<int> decltype(auto) ret = std::ranges::min({1, 2, 3}, comparator, projection);
+    assert(ret == 1);
+    assert(compares == 2);
+    assert(projections == 4);
+  }
+
+  {
+    struct S { int i; };
+    decltype(auto) ret = std::ranges::min({ S{2}, S{1}, S{3} }, {}, &S::i);
+    ASSERT_SAME_TYPE(decltype(ret), S);
+    assert(ret.i == 1);
+  }
+
+  {
+    int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+    using It = cpp20_input_iterator<int*>;
+    using Sent = sentinel_wrapper<It>;
+    auto range = std::ranges::subrange(It(a), Sent(It(a + 8)));
+    auto ret = std::ranges::min(range);
+    assert(ret == 1);
+  }
+}
+
+template <class It, class Sent = It>
+constexpr void test_range_types() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  auto range = std::ranges::subrange(It(a), Sent(It(a + 8)));
+  int ret = std::ranges::min(range);
+  assert(ret == 1);
+}
+
+constexpr void test_range() {
+  { // check that all range types work
+    test_range_types<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+    test_range_types<forward_iterator<int*>>();
+    test_range_types<bidirectional_iterator<int*>>();
+    test_range_types<random_access_iterator<int*>>();
+    test_range_types<contiguous_iterator<int*>>();
+  }
+
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  {
+    // test projection
+    auto proj = [](int& i) { return i == 5 ? -100 : i; };
+    int ret = std::ranges::min(a, std::ranges::less{}, proj);
+    assert(ret == 5);
+  }
+
+  {
+    // test comparator
+    int ret = std::ranges::min(a, std::ranges::greater{});
+    assert(ret == 9);
+  }
+
+  { // check that predicate and projection call counts are correct
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int x, int y) {
+      ++compares;
+      return x < y;
+    };
+    auto projection = [&](int x) {
+      ++projections;
+      return x;
+    };
+    std::same_as<int> decltype(auto) ret = std::ranges::min(std::array{1, 2, 3}, comparator, projection);
+    assert(ret == 1);
+    assert(compares == 2);
+    assert(projections == 4);
+  }
+
+  { // check that std::invoke is used
+    struct S { int i; };
+    S b[3] = { S{2}, S{1}, S{3} };
+    std::same_as<S> decltype(auto) ret = std::ranges::min(b, {}, &S::i);
+    assert(ret.i == 1);
+  }
+
+  { // check that the first smallest element is returned
+    { // where the first element is the smallest
+      struct S { int check; int other; };
+      S b[] = { S{0, 1}, S{1, 2}, S{0, 3} };
+      auto ret = std::ranges::min(b, {}, &S::check);
+      assert(ret.check == 0);
+      assert(ret.other == 1);
+    }
+    { // where the first element isn't the smallest
+      struct S { int check; int other; };
+      S b[] = { S{2, 1}, S{0, 2}, S{0, 3} };
+      auto ret = std::ranges::min(b, {}, &S::check);
+      assert(ret.check == 0);
+      assert(ret.other == 2);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_2_arguments();
+  test_initializer_list();
+  test_range();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.min_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.min_element.pass.cpp
new file mode 100644
index 0000000..0c3039c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.min_element.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//    indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//  constexpr I ranges::min_element(I first, S last, Comp comp = {}, Proj proj = {});
+//
+//  template<forward_range R, class Proj = identity,
+//    indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//  constexpr borrowed_iterator_t<R> ranges::min_element(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <random>
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class T>
+concept HasMinElement = requires (T t) { std::ranges::min_element(t); };
+
+struct NoLessThanOp {};
+struct NotTotallyOrdered {
+  int i;
+  bool operator<(const NotTotallyOrdered& o) const { return i < o.i; }
+};
+
+static_assert(HasMinElement<std::array<int, 0>>);
+static_assert(!HasMinElement<int>);
+static_assert(!HasMinElement<NoLessThanOp>);
+static_assert(!HasMinElement<NotTotallyOrdered>);
+
+template <class Iter>
+constexpr void test_iterators(Iter first, Iter last) {
+  std::same_as<Iter> auto it = std::ranges::min_element(first, last);
+  if (first != last) {
+    for (Iter j = first; j != last; ++j)
+      assert(!(*j < *it));
+  } else {
+    assert(it == first);
+  }
+}
+
+template <class Range, class Iter>
+constexpr void test_range(Range&& rng, Iter begin, Iter end) {
+  std::same_as<Iter> auto it = std::ranges::min_element(std::forward<Range>(rng));
+  if (begin != end) {
+    for (Iter j = begin; j != end; ++j)
+      assert(!(*j < *it));
+  } else {
+    assert(it == begin);
+  }
+}
+
+template <class It>
+constexpr void test(std::initializer_list<int> a, int expected) {
+  const int* first = a.begin();
+  const int* last = a.end();
+  {
+    std::same_as<It> auto it = std::ranges::min_element(It(first), It(last));
+    assert(base(it) == first + expected);
+  }
+  {
+    using Sent = sentinel_wrapper<It>;
+    std::same_as<It> auto it = std::ranges::min_element(It(first), Sent(It(last)));
+    assert(base(it) == first + expected);
+  }
+  {
+    auto range = std::ranges::subrange(It(first), It(last));
+    std::same_as<It> auto it = std::ranges::min_element(range);
+    assert(base(it) == first + expected);
+  }
+  {
+    using Sent = sentinel_wrapper<It>;
+    auto range = std::ranges::subrange(It(first), Sent(It(last)));
+    std::same_as<It> auto it = std::ranges::min_element(range);
+    assert(base(it) == first + expected);
+  }
+}
+
+template <class It>
+constexpr bool test() {
+  test<It>({}, 0);
+  test<It>({1}, 0);
+  test<It>({1, 2}, 0);
+  test<It>({2, 1}, 1);
+  test<It>({2, 1, 2}, 1);
+  test<It>({2, 1, 1}, 1);
+
+  return true;
+}
+
+constexpr void test_borrowed_range_and_sentinel() {
+  int a[] = {7, 6, 1, 3, 5, 1, 2, 4};
+
+  int* ret = std::ranges::min_element(std::views::all(a));
+  assert(ret == a + 2);
+  assert(*ret == 1);
+}
+
+constexpr void test_comparator() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  int* ret = std::ranges::min_element(a, std::ranges::greater{});
+  assert(ret == a + 2);
+  assert(*ret == 9);
+}
+
+constexpr void test_projection() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  {
+    int* ret = std::ranges::min_element(a, std::ranges::less{}, [](int i) { return i == 5 ? -100 : i; });
+    assert(ret == a + 4);
+    assert(*ret == 5);
+  }
+  {
+    int* ret = std::ranges::min_element(a, std::less<int*>{}, [](int& i) { return &i; });
+    assert(ret == a);
+    assert(*ret == 7);
+  }
+}
+
+struct Immobile {
+  int i;
+
+  constexpr Immobile(int i_) : i(i_) {}
+  Immobile(const Immobile&) = delete;
+  Immobile(Immobile&&) = delete;
+
+  auto operator<=>(const Immobile&) const = default;
+};
+
+constexpr void test_immobile() {
+
+  Immobile arr[] {1, 2, 3};
+  assert(std::ranges::min_element(arr) == arr);
+  assert(std::ranges::min_element(arr, arr + 3) == arr);
+}
+
+constexpr void test_dangling() {
+  int compares = 0;
+  int projections = 0;
+  auto comparator = [&](int a, int b) {
+    ++compares;
+    return a < b;
+  };
+  auto projection = [&](int a) {
+    ++projections;
+    return a;
+  };
+  [[maybe_unused]] std::same_as<std::ranges::dangling> auto ret =
+      std::ranges::min_element(std::array{1, 2, 3}, comparator, projection);
+  assert(compares == 2);
+  assert(projections == 4);
+}
+
+constexpr bool test() {
+
+  test<forward_iterator<const int*>>();
+  test<bidirectional_iterator<const int*>>();
+  test<random_access_iterator<const int*>>();
+  test<const int*>();
+
+  int a[] = {7, 6, 5, 3, 4, 2, 1, 8};
+  test_iterators(a, a + 8);
+  int a2[] = {7, 6, 5, 3, 4, 2, 1, 8};
+  test_range(a2, a2, a2 + 8);
+
+  test_borrowed_range_and_sentinel();
+  test_comparator();
+  test_projection();
+  test_dangling();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp
new file mode 100644
index 0000000..828a820
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax.pass.cpp
@@ -0,0 +1,352 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr ranges::minmax_result<const T&>
+//     ranges::minmax(const T& a, const T& b, Comp comp = {}, Proj proj = {});
+// template<copyable T, class Proj = identity,
+//          indirect_strict_weak_order<projected<const T*, Proj>> Comp = ranges::less>
+//   constexpr ranges::minmax_result<T>
+//     ranges::minmax(initializer_list<T> r, Comp comp = {}, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   requires indirectly_copyable_storable<iterator_t<R>, range_value_t<R>*>
+//   constexpr ranges::minmax_result<range_value_t<R>>
+//     ranges::minmax(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <memory>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class T>
+concept HasMinMax = requires { std::ranges::minmax(std::declval<T>()); };
+
+struct NoLessThanOp {};
+struct NotTotallyOrdered {
+  int i;
+  bool operator<(const NotTotallyOrdered& o) const { return i < o.i; }
+};
+struct MoveOnly {
+  MoveOnly(MoveOnly&&) = default;
+  MoveOnly& operator=(MoveOnly&&) = default;
+  MoveOnly(const MoveOnly&) = delete;
+};
+
+static_assert(!HasMinMax<int>);
+
+static_assert(HasMinMax<int (&)[10]>); // make sure HasMinMax works with an array
+static_assert(!HasMinMax<NoLessThanOp (&)[10]>);
+static_assert(!HasMinMax<NotTotallyOrdered (&)[10]>);
+static_assert(!HasMinMax<MoveOnly (&)[10]>);
+
+static_assert(HasMinMax<std::initializer_list<int>>); // make sure HasMinMax works with an initializer_list
+static_assert(!HasMinMax<std::initializer_list<NoLessThanOp>>);
+static_assert(!HasMinMax<std::initializer_list<NotTotallyOrdered>>);
+static_assert(!HasMinMax<std::initializer_list<MoveOnly>>);
+
+static_assert(std::is_same_v<std::ranges::minmax_result<int>, std::ranges::min_max_result<int>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::minmax(1, 2)), std::ranges::minmax_result<const int&>>);
+
+constexpr void test_2_arguments() {
+  const int one = 1;
+  const int two = 2;
+  {
+    auto result = std::ranges::minmax(one, two);
+    assert(result.min == 1);
+    assert(result.max == 2);
+  }
+
+  {
+    auto result = std::ranges::minmax(two, one);
+    assert(result.min == 1);
+    assert(result.max == 2);
+  }
+
+  {
+    // test comparator
+    auto result = std::ranges::minmax(one, two, std::ranges::greater{});
+    assert(result.min == 2);
+    assert(result.max == 1);
+  }
+
+  {
+    // test projection
+    auto result = std::ranges::minmax(one, two, std::ranges::less{}, [](int i) { return i == 1 ? 10 : i; });
+    assert(result.min == 2);
+    assert(result.max == 1);
+  }
+
+  {
+    // test if std::invoke is used for the predicate
+    struct S {
+      int i;
+    };
+    S a[3] = {S{2}, S{1}, S{3}};
+    std::same_as<std::ranges::minmax_result<const S&>> auto ret = std::ranges::minmax(a[0], a[1], {}, &S::i);
+    assert(&ret.min == &a[1]);
+    assert(&ret.max == &a[0]);
+    assert(ret.min.i == 1);
+    assert(ret.max.i == 2);
+  }
+
+  {
+    // check that std::invoke is used for the comparator
+    struct S {
+      int i;
+      constexpr bool comp(S rhs) const { return i < rhs.i; }
+    };
+    S a[] = {{2}, {5}};
+    auto ret = std::ranges::minmax(a[0], a[1], &S::comp);
+    assert(ret.min.i == 2);
+    assert(ret.max.i == 5);
+  }
+
+  {
+    // make sure that {a, b} is returned if b is not less than a
+    auto r = std::ranges::minmax(one, two);
+    assert(&r.min == &one);
+    assert(&r.max == &two);
+  }
+}
+
+constexpr void test_initializer_list() {
+  {
+    // test projection
+    auto proj = [](int i) { return i == 5 ? -100 : i; };
+    auto ret = std::ranges::minmax({7, 6, 9, 3, 5, 1, 2, 4}, std::ranges::less{}, proj);
+    assert(ret.min == 5);
+    assert(ret.max == 9);
+  }
+
+  {
+    // test comparator
+    auto ret = std::ranges::minmax({7, 6, 9, 3, 5, 1, 2, 4}, std::ranges::greater{});
+    assert(ret.min == 9);
+    assert(ret.max == 1);
+  }
+
+  {
+    // check predicate and projection call counts
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int a, int b) {
+      ++compares;
+      return a < b;
+    };
+    auto projection = [&](int a) {
+      ++projections;
+      return a;
+    };
+    std::same_as<std::ranges::minmax_result<int>> auto ret = std::ranges::minmax({1, 2, 3}, comparator, projection);
+    assert(ret.min == 1);
+    assert(ret.max == 3);
+    assert(compares == 3);
+    assert(projections == 6);
+  }
+
+  {
+    // check that std::invoke is used for the predicate
+    struct S {
+      int i;
+    };
+    std::same_as<std::ranges::minmax_result<S>> auto ret = std::ranges::minmax({S{2}, S{1}, S{3}}, {}, &S::i);
+    assert(ret.min.i == 1);
+    assert(ret.max.i == 3);
+  }
+
+  {
+    // check that std::invoke is used for the comparator
+    struct S {
+      int i;
+      constexpr bool comp(S rhs) const { return i < rhs.i; }
+    };
+    auto ret = std::ranges::minmax({S {1}, S {2}, S {3}, S {4}}, &S::comp);
+    assert(ret.min.i == 1);
+    assert(ret.max.i == 4);
+  }
+
+  {
+    // check that a single element works
+    auto ret = std::ranges::minmax({ 1 });
+    assert(ret.min == 1);
+    assert(ret.max == 1);
+  }
+
+  {
+    // check in ascending order
+    auto ret = std::ranges::minmax({1, 2, 3});
+    assert(ret.min == 1);
+    assert(ret.max == 3);
+  }
+
+  {
+    // check in descending order
+    auto ret = std::ranges::minmax({3, 2, 1});
+    assert(ret.min == 1);
+    assert(ret.max == 3);
+  }
+}
+
+template <class Iter, class Sent = Iter>
+constexpr void test_range_types() {
+  {
+    // test projection
+    int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+    auto proj = [](int& i) { return i == 5 ? -100 : i; };
+    auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 8)));
+    auto ret = std::ranges::minmax(range, std::ranges::less{}, proj);
+    assert(ret.min == 5);
+    assert(ret.max == 9);
+  }
+
+  {
+    // test comparator
+    int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+    auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 8)));
+    auto ret = std::ranges::minmax(range, std::ranges::greater{});
+    assert(ret.min == 9);
+    assert(ret.max == 1);
+  }
+
+  {
+    // check that complexity requirements are met
+    int compares = 0;
+    int projections = 0;
+    auto comparator = [&](int x, int y) {
+      ++compares;
+      return x < y;
+    };
+    auto projection = [&](int x) {
+      ++projections;
+      return x;
+    };
+    int a[] = {1, 2, 3};
+    auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+    std::same_as<std::ranges::minmax_result<int>> auto ret = std::ranges::minmax(range, comparator, projection);
+    assert(ret.min == 1);
+    assert(ret.max == 3);
+    assert(compares == 3);
+    assert(projections == 6);
+  }
+
+  {
+    // check that a single element works
+    int a[] = { 1 };
+    auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 1)));
+    auto ret = std::ranges::minmax(range);
+    assert(ret.min == 1);
+    assert(ret.max == 1);
+  }
+
+  {
+    // check in ascending order
+    int a[] = {1, 2, 3};
+    auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+    auto ret = std::ranges::minmax(range);
+    assert(ret.min == 1);
+    assert(ret.max == 3);
+  }
+
+  {
+    // check in descending order
+    int a[] = {3, 2, 1};
+    auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+    auto ret = std::ranges::minmax(range);
+    assert(ret.min == 1);
+    assert(ret.max == 3);
+  }
+}
+
+constexpr void test_range() {
+  test_range_types<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_range_types<forward_iterator<int*>>();
+  test_range_types<bidirectional_iterator<int*>>();
+  test_range_types<random_access_iterator<int*>>();
+  test_range_types<contiguous_iterator<int*>>();
+
+  {
+    // check that std::invoke is used for the predicate
+    struct S {
+      int i;
+    };
+    S b[3] = {S{2}, S{1}, S{3}};
+    std::same_as<std::ranges::minmax_result<S>> auto ret = std::ranges::minmax(b, {}, &S::i);
+    assert(ret.min.i == 1);
+    assert(ret.max.i == 3);
+  }
+
+  {
+    // check that std::invoke is used for the comparator
+    struct S {
+      int i;
+      constexpr bool comp(S rhs) const { return i < rhs.i; }
+    };
+    S a[] = {{1}, {2}, {3}, {4}};
+    auto ret = std::ranges::minmax(a, &S::comp);
+    assert(ret.min.i == 1);
+    assert(ret.max.i == 4);
+  }
+
+  {
+    // check that the leftmost value for min an rightmost for max are returned
+    struct S {
+      int comp;
+      int other;
+    };
+    S a[] = { {0, 0}, {0, 2}, {0, 1} };
+    auto ret = std::ranges::minmax(a, {}, &S::comp);
+    assert(ret.min.comp == 0);
+    assert(ret.max.comp == 0);
+    assert(ret.min.other == 0);
+    assert(ret.max.other == 1);
+  }
+
+  {
+    // check that an rvalue array works
+    int a[] = {1, 2, 3, 4};
+    auto ret = std::ranges::minmax(std::move(a));
+    assert(ret.min == 1);
+    assert(ret.max == 4);
+  }
+}
+
+constexpr bool test() {
+  test_2_arguments();
+  test_initializer_list();
+  test_range();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  {
+    // check that the iterator isn't moved from multiple times
+    std::shared_ptr<int> a[] = { std::make_shared<int>(42) };
+    auto range = std::ranges::subrange(std::move_iterator(a), std::move_iterator(a + 1));
+    auto [min, max] = std::ranges::minmax(range);
+    assert(a[0] == nullptr);
+    assert(min != nullptr);
+    assert(max == min);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax_element.pass.cpp
new file mode 100644
index 0000000..740fcee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/ranges.minmax_element.pass.cpp
@@ -0,0 +1,316 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//    indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//  constexpr ranges::minmax_element_result<I> ranges::minmax_element(I first, S last, Comp comp = {}, Proj proj = {});
+//
+//  template<forward_range R, class Proj = identity,
+//    indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//  constexpr ranges::minmax_element_result<borrowed_iterator_t<R>>
+//    ranges::minmax_element(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class T>
+concept HasMinMaxElementR = requires(T t) { std::ranges::minmax_element(t); };
+
+struct NoLessThanOp {};
+struct NotTotallyOrdered {
+  int i;
+  bool operator<(const NotTotallyOrdered& o) const { return i < o.i; }
+};
+
+static_assert(HasMinMaxElementR<int (&)[10]>); // make sure HasMinMaxElementR works with an array
+static_assert(!HasMinMaxElementR<NoLessThanOp (&)[10]>);
+static_assert(!HasMinMaxElementR<NotTotallyOrdered (&)[10]>);
+
+static_assert(HasMinMaxElementR<std::initializer_list<int>>); // make sure HasMinMaxElementR works with an initializer_list
+static_assert(!HasMinMaxElementR<std::initializer_list<NoLessThanOp>>);
+static_assert(!HasMinMaxElementR<std::initializer_list<NotTotallyOrdered>>);
+static_assert(!HasMinMaxElementR<InputRangeNotDerivedFrom>);
+static_assert(!HasMinMaxElementR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasMinMaxElementR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasMinMaxElementR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasMinMaxElementR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class It, class Sent = sentinel_wrapper<It>>
+concept HasMinMaxElementIt = requires(It it, Sent sent) { std::ranges::minmax_element(it, sent); };
+static_assert(HasMinMaxElementIt<int*>); // make sure HasMinMaxElementIt works
+static_assert(!HasMinMaxElementIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasMinMaxElementIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasMinMaxElementIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasMinMaxElementIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasMinMaxElementIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+static_assert(std::is_same_v<std::ranges::minmax_element_result<int>, std::ranges::min_max_result<int>>);
+
+template <class It>
+constexpr void test_iterators(std::initializer_list<int> a, int expectedMin, int expectedMax) {
+  using Expected = std::ranges::minmax_element_result<It>;
+  const int* first = a.begin();
+  const int* last = a.end();
+  {
+    std::same_as<Expected> auto it = std::ranges::minmax_element(It(first), It(last));
+    assert(base(it.min) == first + expectedMin);
+    assert(base(it.max) == first + expectedMax);
+  }
+  {
+    using Sent = sentinel_wrapper<It>;
+    std::same_as<Expected> auto it = std::ranges::minmax_element(It(first), Sent(It(last)));
+    assert(base(it.min) == first + expectedMin);
+    assert(base(it.max) == first + expectedMax);
+  }
+  {
+    auto range = std::ranges::subrange(It(first), It(last));
+    std::same_as<Expected> auto it = std::ranges::minmax_element(range);
+    assert(base(it.min) == first + expectedMin);
+    assert(base(it.max) == first + expectedMax);
+  }
+  {
+    using Sent = sentinel_wrapper<It>;
+    auto range = std::ranges::subrange(It(first), Sent(It(last)));
+    std::same_as<Expected> auto it = std::ranges::minmax_element(range);
+    assert(base(it.min) == first + expectedMin);
+    assert(base(it.max) == first + expectedMax);
+  }
+}
+
+template <class It>
+constexpr bool test_iterators() {
+  test_iterators<It>({}, 0, 0);
+  test_iterators<It>({1}, 0, 0);
+  test_iterators<It>({1, 2}, 0, 1);
+  test_iterators<It>({2, 1}, 1, 0);
+  test_iterators<It>({2, 1, 2}, 1, 2);
+  test_iterators<It>({2, 1, 1}, 1, 0);
+  test_iterators<It>({2, 2, 1}, 2, 1);
+
+  return true;
+}
+
+constexpr void test_borrowed_range_and_sentinel() {
+  int a[] = {7, 6, 1, 3, 5, 1, 2, 4};
+
+  std::ranges::minmax_element_result<int*> ret = std::ranges::minmax_element(std::views::all(a));
+  assert(ret.min == a + 2);
+  assert(ret.max == a + 0);
+  assert(*ret.min == 1);
+  assert(*ret.max == 7);
+}
+
+constexpr void test_comparator() {
+  int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+  std::ranges::minmax_element_result<int*> ret = std::ranges::minmax_element(a, std::ranges::greater{});
+  assert(ret.min == a + 2);
+  assert(ret.max == a + 5);
+  assert(*ret.min == 9);
+  assert(*ret.max == 1);
+}
+
+constexpr void test_projection() {
+  {
+    int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+    std::ranges::minmax_element_result<int*> ret =
+        std::ranges::minmax_element(a, std::ranges::less{}, [](int i) { return i == 5 ? -100 : i; });
+    assert(ret.min == a + 4);
+    assert(ret.max == a + 2);
+    assert(*ret.min == 5);
+    assert(*ret.max == 9);
+  }
+  {
+    int a[] = {7, 6, 9, 3, 5, 1, 2, 4};
+    std::ranges::minmax_element_result<int*> ret =
+        std::ranges::minmax_element(a, std::less<int*>{}, [](int& i) { return &i; });
+    assert(ret.min == a + 0);
+    assert(ret.max == a + 7);
+    assert(*ret.min == 7);
+    assert(*ret.max == 4);
+  }
+}
+
+struct Immobile {
+  int i;
+
+  constexpr Immobile(int i_) : i(i_) {}
+  Immobile(const Immobile&) = delete;
+  Immobile(Immobile&&) = delete;
+
+  auto operator<=>(const Immobile&) const = default;
+};
+
+constexpr void test_immobile() {
+  {
+    Immobile arr[]{1, 2, 3};
+    auto ret = std::ranges::minmax_element(arr);
+    assert(ret.min == arr + 0);
+    assert(ret.max == arr + 2);
+  }
+  {
+    Immobile arr[]{1, 2, 3};
+    auto ret = std::ranges::minmax_element(arr, arr + 3);
+    assert(ret.min == arr + 0);
+    assert(ret.max == arr + 2);
+  }
+}
+
+constexpr void test_dangling() {
+  int compares = 0;
+  int projections = 0;
+  auto comparator = [&](int a, int b) {
+    ++compares;
+    return a < b;
+  };
+  auto projection = [&](int a) {
+    ++projections;
+    return a;
+  };
+  [[maybe_unused]] std::same_as<std::ranges::minmax_element_result<std::ranges::dangling>> auto ret =
+      std::ranges::minmax_element(std::array{1, 2, 3}, comparator, projection);
+  assert(compares == 3);
+  assert(projections == 6);
+}
+
+constexpr bool test() {
+  test_iterators<forward_iterator<const int*>>();
+  test_iterators<bidirectional_iterator<const int*>>();
+  test_iterators<random_access_iterator<const int*>>();
+  test_iterators<contiguous_iterator<const int*>>();
+  test_iterators<const int*>();
+  test_iterators<int*>();
+
+  test_borrowed_range_and_sentinel();
+  test_comparator();
+  test_projection();
+  test_dangling();
+
+  { // check that std::invoke is used
+    {
+      struct S {
+        int i;
+      };
+      S b[3] = {S{2}, S{1}, S{3}};
+      std::same_as<std::ranges::minmax_element_result<S*>> auto ret = std::ranges::minmax_element(b, {}, &S::i);
+      assert(ret.min->i == 1);
+      assert(ret.max->i == 3);
+      assert(ret.min == b + 1);
+      assert(ret.max == b + 2);
+    }
+    {
+      struct S {
+        int i;
+      };
+      S b[3] = {S{2}, S{1}, S{3}};
+      std::same_as<std::ranges::minmax_element_result<S*>> auto ret = std::ranges::minmax_element(b, b + 3, {}, &S::i);
+      assert(ret.min->i == 1);
+      assert(ret.max->i == 3);
+      assert(ret.min == b + 1);
+      assert(ret.max == b + 2);
+    }
+  }
+
+  { // check that the leftmost value for min an rightmost for max are returned
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::minmax_element(a, a + 3, {}, &S::comp);
+      assert(ret.min->comp == 0);
+      assert(ret.max->comp == 0);
+      assert(ret.min->other == 0);
+      assert(ret.max->other == 1);
+    }
+    {
+      struct S {
+        int comp;
+        int other;
+      };
+      S a[] = { {0, 0}, {0, 2}, {0, 1} };
+      auto ret = std::ranges::minmax_element(a, {}, &S::comp);
+      assert(ret.min->comp == 0);
+      assert(ret.max->comp == 0);
+      assert(ret.min->other == 0);
+      assert(ret.max->other == 1);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::minmax_element(a.begin(), a.end());
+      assert(ret.min == a.begin());
+      assert(ret.max == a.begin());
+    }
+    {
+      std::array<int, 0> a = {};
+      auto ret = std::ranges::minmax_element(a);
+      assert(ret.min == a.begin());
+      assert(ret.max == a.begin());
+    }
+  }
+
+  { // check in ascending order
+    {
+      int a[] = {1, 2, 3};
+      auto ret = std::ranges::minmax_element(a, a + 3);
+      assert(ret.min == a + 0);
+      assert(ret.max == a + 2);
+      assert(*ret.min == 1);
+      assert(*ret.max == 3);
+    }
+    {
+      int a[] = {1, 2, 3};
+      auto ret = std::ranges::minmax_element(a);
+      assert(ret.min == a + 0);
+      assert(ret.max == a + 2);
+      assert(*ret.min == 1);
+      assert(*ret.max == 3);
+    }
+  }
+
+  { // check in descending order
+    {
+      int a[] = {3, 2, 1};
+      auto ret = std::ranges::minmax_element(a, a + 3);
+      assert(ret.min == a + 2);
+      assert(ret.max == a + 0);
+      assert(*ret.min == 1);
+      assert(*ret.max == 3);
+    }
+    {
+      int a[] = {3, 2, 1};
+      auto ret = std::ranges::minmax_element(a);
+      assert(ret.min == a + 2);
+      assert(ret.max == a + 0);
+      assert(*ret.min == 1);
+      assert(*ret.max == 3);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/requires_forward_iterator.fail.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/requires_forward_iterator.fail.cpp
new file mode 100644
index 0000000..4fabc2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.min.max/requires_forward_iterator.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   max_element(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_iterators.h"
+
+int main(int, char**) {
+  int arr[] = {1, 2, 3};
+  const int *b = std::begin(arr), *e = std::end(arr);
+  typedef cpp17_input_iterator<const int*> Iter;
+  {
+    // expected-error@*:* {{std::min_element requires a ForwardIterator}}
+    (void) std::min_element(Iter(b), Iter(e));
+  }
+  {
+    // expected-error@*:* {{std::max_element requires a ForwardIterator}}
+    (void) std::max_element(Iter(b), Iter(e));
+  }
+  {
+    // expected-error@*:* {{std::minmax_element requires a ForwardIterator}}
+    (void) std::minmax_element(Iter(b), Iter(e));
+  }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/nth_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/nth_element.pass.cpp
new file mode 100644
index 0000000..37472a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/nth_element.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   nth_element(Iter first, Iter nth, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        for (int m = 0; m < n; ++m) {
+            std::nth_element(Iter(work), Iter(work+m), Iter(work+n));
+            assert(std::is_permutation(work, work+n, orig));
+            // No element to m's left is greater than m.
+            for (int i = 0; i < m; ++i) {
+                assert(!(work[i] > work[m]));
+            }
+            // No element to m's right is less than m.
+            for (int i = m; i < n; ++i) {
+                assert(!(work[i] < work[m]));
+            }
+            std::copy(orig, orig+15, work);
+        }
+    }
+
+    {
+        T input[] = {3,1,4,1,5,9,2};
+        std::nth_element(Iter(input), Iter(input+4), Iter(input+7));
+        assert(input[4] == 4);
+        assert(input[5] + input[6] == 5 + 9);
+    }
+
+    {
+        T input[] = {0, 1, 2, 3, 4, 5, 7, 6};
+        std::nth_element(Iter(input), Iter(input + 6), Iter(input + 8));
+        assert(input[6] == 6);
+        assert(input[7] == 7);
+    }
+
+    {
+        T input[] = {1, 0, 2, 3, 4, 5, 6, 7};
+        std::nth_element(Iter(input), Iter(input + 1), Iter(input + 8));
+        assert(input[0] == 0);
+        assert(input[1] == 1);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/nth_element_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/nth_element_comp.pass.cpp
new file mode 100644
index 0000000..f45ba11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/nth_element_comp.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter> && CopyConstructible<Compare>
+//   constexpr void  // constexpr in C++20
+//   nth_element(Iter first, Iter nth, Iter last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        for (int m = 0; m < n; ++m) {
+            std::nth_element(Iter(work), Iter(work+m), Iter(work+n), std::greater<T>());
+            assert(std::is_permutation(work, work+n, orig));
+            // No element to m's left is less than m.
+            for (int i = 0; i < m; ++i) {
+                assert(!(work[i] < work[m]));
+            }
+            // No element to m's right is greater than m.
+            for (int i = m; i < n; ++i) {
+                assert(!(work[i] > work[m]));
+            }
+            std::copy(orig, orig+15, work);
+        }
+    }
+
+    {
+        T input[] = {3,1,4,1,5,9,2};
+        std::nth_element(Iter(input), Iter(input+4), Iter(input+7), std::greater<T>());
+        assert(input[4] == 2);
+        assert(input[5] + input[6] == 1 + 1);
+    }
+
+    {
+        T input[] = {0, 1, 2, 3, 4, 5, 7, 6};
+        std::nth_element(Iter(input), Iter(input + 6), Iter(input + 8), std::greater<T>());
+        assert(input[6] == 1);
+        assert(input[7] == 0);
+    }
+
+    {
+        T input[] = {1, 0, 2, 3, 4, 5, 6, 7};
+        std::nth_element(Iter(input), Iter(input + 1), Iter(input + 8), std::greater<T>());
+        assert(input[0] == 7);
+        assert(input[1] == 6);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/ranges_nth_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/ranges_nth_element.pass.cpp
new file mode 100644
index 0000000..a648e7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.nth.element/ranges_nth_element.pass.cpp
@@ -0,0 +1,293 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//         class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr I
+//     ranges::nth_element(I first, I nth, S last, Comp comp = {}, Proj proj = {});            // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::nth_element(R&& r, iterator_t<R> nth, Comp comp = {}, Proj proj = {});          // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <iterator>
+#include <optional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasNthElementIt = requires(Iter first, Iter nth, Sent last, Comp comp) {
+  std::ranges::nth_element(first, nth, last, comp);
+};
+
+static_assert(HasNthElementIt<int*>);
+static_assert(!HasNthElementIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasNthElementIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasNthElementIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasNthElementIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasNthElementIt<int*, int*, BadComparator>);
+static_assert(!HasNthElementIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasNthElementR = requires(Range range, std::ranges::iterator_t<Range> nth, Comp comp) {
+  std::ranges::nth_element(range, nth, comp);
+};
+
+static_assert(HasNthElementR<UncheckedRange<int*>>);
+static_assert(!HasNthElementR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasNthElementR<RandomAccessRangeBadIndex>);
+static_assert(!HasNthElementR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasNthElementR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasNthElementR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasNthElementR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <size_t N, class T, class Iter>
+constexpr void verify_nth(const std::array<T, N>& partially_sorted, size_t nth_index, Iter last, T expected_nth) {
+  // Note that the exact output of `nth_element` is unspecified and may vary between implementations.
+
+  assert(base(last) == partially_sorted.end());
+
+  auto b = partially_sorted.begin();
+  auto nth = b + nth_index;
+  auto e = partially_sorted.end();
+  if (nth == e)
+    return;
+
+  assert(*nth == expected_nth);
+
+  // All elements on the left are <= nth.
+  assert(std::all_of(b, nth, [&](const auto& v) { return v <= *nth; }));
+  // All elements on the right are >= nth.
+  assert(std::all_of(nth, e, [&](const auto& v) { return v >= *nth; }));
+
+  {
+    auto sorted = partially_sorted;
+    std::ranges::sort(sorted);
+
+    // The element at index `n` is the same as if the range were fully sorted.
+    assert(sorted[nth_index] == *nth);
+  }
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(std::array<int, N> input, size_t nth_index, std::optional<int> expected_nth = {}) {
+  assert(expected_nth || nth_index == N);
+
+  { // (iterator, sentinel) overload.
+    auto partially_sorted = input;
+    auto b = Iter(partially_sorted.data());
+    auto nth = b + nth_index;
+    auto e = Sent(Iter(partially_sorted.data() + partially_sorted.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::nth_element(b, nth, e);
+    if (nth_index != N) {
+      verify_nth(partially_sorted, nth_index, last, *expected_nth);
+    } else {
+      assert(partially_sorted == input);
+    }
+  }
+
+  { // (range) overload.
+    auto partially_sorted = input;
+    auto b = Iter(partially_sorted.data());
+    auto nth = b + nth_index;
+    auto e = Sent(Iter(partially_sorted.data() + partially_sorted.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::nth_element(range, nth);
+    if (nth_index != N) {
+      verify_nth(partially_sorted, nth_index, last, *expected_nth);
+    } else {
+      assert(partially_sorted == input);
+    }
+  }
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_all_cases(std::array<int, N> input) {
+  auto sorted = input;
+  std::sort(sorted.begin(), sorted.end());
+
+  for (int n = 0; n != N; ++n) {
+    test_one<Iter, Sent, N>(input, n, sorted[n]);
+  }
+  test_one<Iter, Sent, N>(input, N);
+}
+
+constexpr void test_iterators() {
+  auto check = []<class Iter, class Sent> {
+    // Empty sequence.
+    test_one<Iter, Sent, 0>({}, 0);
+
+    // 1-element sequence.
+    test_all_cases<Iter, Sent>(std::array{1});
+
+    // 2-element sequence.
+    test_all_cases<Iter, Sent>(std::array{2, 1});
+
+    // 3-element sequence.
+    test_all_cases<Iter, Sent>(std::array{2, 1, 3});
+
+    // Longer sequence.
+    test_all_cases<Iter, Sent>(std::array{2, 1, 3, 6, 8, 4, 11, 5});
+
+    // Longer sequence with duplicates.
+    test_all_cases<Iter, Sent>(std::array{2, 1, 3, 6, 2, 8, 6});
+
+    // All elements are the same.
+    test_all_cases<Iter, Sent>(std::array{1, 1, 1, 1});
+
+    { // nth element is in the right place.
+      std::array input = {6, 5, 3, 1, 4, 2};
+      constexpr size_t N = input.size();
+      test_one<Iter, Sent, N>(input, 2, /*expected_nth=*/3);
+    }
+
+    // Already sorted.
+    test_all_cases<Iter, Sent>(std::array{1, 2, 3, 4, 5, 6});
+
+    // Descending.
+    test_all_cases<Iter, Sent>(std::array{6, 5, 4, 3, 2, 1});
+
+    // Repeating pattern.
+    test_all_cases<Iter, Sent>(std::array{2, 1, 2, 1, 2, 1});
+  };
+
+  check.operator()<random_access_iterator<int*>, random_access_iterator<int*>>();
+  check.operator()<random_access_iterator<int*>, sentinel_wrapper<random_access_iterator<int*>>>();
+  check.operator()<contiguous_iterator<int*>, contiguous_iterator<int*>>();
+  check.operator()<contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>>();
+  check.operator()<int*, int*>();
+  check.operator()<int*, sentinel_wrapper<int*>>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array input = {1, 2, 3, 4, 5};
+    std::ranges::greater comp;
+
+    {
+      auto in = input;
+      auto last = std::ranges::nth_element(in.begin(), in.begin() + 1, in.end(), comp);
+      assert(in[1] == 4);
+      assert(last == in.end());
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::nth_element(in, in.begin() + 1, comp);
+      assert(in[1] == 4);
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr bool operator==(const A&) const = default;
+    };
+
+    const std::array input = {A{2}, A{1}, A{3}};
+
+    {
+      auto in = input;
+      auto last = std::ranges::nth_element(in.begin(), in.begin() + 1, in.end(), {}, &A::a);
+      assert(in[1] == A{2});
+      assert(last == in.end());
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::nth_element(in, in.begin() + 1, {}, &A::a);
+      assert(in[1] == A{2});
+      assert(last == in.end());
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct S {
+      int i;
+      constexpr S(int i_) : i(i_) {}
+
+      constexpr bool comparator(const S& rhs) const { return i < rhs.i; }
+      constexpr const S& projection() const { return *this; }
+
+      constexpr bool operator==(const S&) const = default;
+    };
+
+    const std::array input = {S{2}, S{1}, S{3}};
+
+    {
+      auto in = input;
+      auto last = std::ranges::nth_element(in.begin(), in.begin() + 1, in.end(), &S::comparator, &S::projection);
+      assert(in[1] == S{2});
+      assert(last == in.end());
+    }
+
+    {
+      auto in = input;
+      auto last = std::ranges::nth_element(in, in.begin() + 1, &S::comparator, &S::projection);
+      assert(in[1] == S{2});
+      assert(last == in.end());
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    const std::array input = {2, 1, 3};
+    auto pred = [](int i, int j) { return BooleanTestable{i < j}; };
+
+    {
+      std::array in = input;
+      auto last = std::ranges::nth_element(in.begin(), in.begin() + 1, in.end(), pred);
+      assert(in[1] == 2);
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = input;
+      auto last = std::ranges::nth_element(in, in.begin() + 1, pred);
+      assert(in[1] == 2);
+      assert(last == in.end());
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    std::array in{1, 2, 3};
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result =
+        std::ranges::nth_element(std::move(in), in.begin());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.partitions/ranges.is_partitioned.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.partitions/ranges.is_partitioned.pass.cpp
new file mode 100644
index 0000000..9795d1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.partitions/ranges.is_partitioned.pass.cpp
@@ -0,0 +1,228 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_unary_predicate<projected<I, Proj>> Pred>
+//   constexpr bool ranges::is_partitioned(I first, S last, Pred pred, Proj proj = {});
+// template<input_range R, class Proj = identity,
+//          indirect_unary_predicate<projected<iterator_t<R>, Proj>> Pred>
+//   constexpr bool ranges::is_partitioned(R&& r, Pred pred, Proj proj = {});
+
+
+#include <algorithm>
+#include <cassert>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+struct Functor {
+  bool operator()(auto&&);
+};
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasIsPartitionedIt = requires(Iter iter, Sent sent) {
+  std::ranges::is_partitioned(iter, sent, Functor{});
+};
+
+static_assert(HasIsPartitionedIt<int*>);
+static_assert(!HasIsPartitionedIt<InputIteratorNotDerivedFrom>);
+static_assert(!HasIsPartitionedIt<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasIsPartitionedIt<InputIteratorNotInputOrOutputIterator>);
+static_assert(!HasIsPartitionedIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasIsPartitionedIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+template <class Pred>
+concept HasIsPartitionedItPred = requires(int* first, int* last, Pred pred) {
+  std::ranges::is_partitioned(first, last, pred);
+};
+
+static_assert(HasIsPartitionedItPred<Functor>);
+static_assert(!HasIsPartitionedItPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasIsPartitionedItPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class Range>
+concept HasIsPartitionedR = requires (Range range) {
+    std::ranges::is_partitioned(range, Functor{});
+};
+
+static_assert(HasIsPartitionedR<UncheckedRange<int*>>);
+static_assert(!HasIsPartitionedR<InputRangeNotDerivedFrom>);
+static_assert(!HasIsPartitionedR<InputRangeNotIndirectlyReadable>);
+static_assert(!HasIsPartitionedR<InputRangeNotInputOrOutputIterator>);
+static_assert(!HasIsPartitionedR<InputRangeNotSentinelSemiregular>);
+static_assert(!HasIsPartitionedR<InputRangeNotSentinelEqualityComparableWith>);
+
+template <class Pred>
+concept HasIsPartitionedRPred = requires(Pred pred) {
+  std::ranges::is_partitioned(UncheckedRange<int*>{}, pred);
+};
+
+static_assert(HasIsPartitionedRPred<Functor>);
+static_assert(!HasIsPartitionedRPred<IndirectUnaryPredicateNotCopyConstructible>);
+static_assert(!HasIsPartitionedRPred<IndirectUnaryPredicateNotPredicate>);
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      std::same_as<bool> decltype(auto) ret =
+          std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 5)), [](int i) { return i < 3; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      std::same_as<bool> decltype(auto) ret = std::ranges::is_partitioned(range, [](int i) { return i < 3; });
+      assert(ret);
+    }
+  }
+
+  { // check that it's partitoned if the predicate is true for all elements
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 4)), [](int) { return true; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      auto ret = std::ranges::is_partitioned(range, [](int) { return true; });
+      assert(ret);
+    }
+  }
+
+  { // check that it's partitioned if the predicate is false for all elements
+    {
+      int a[] = {1, 2, 3, 4};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 4)), [](int) { return false; });
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      auto ret = std::ranges::is_partitioned(range, [](int) { return false; });
+      assert(ret);
+    }
+  }
+
+  { // check that false is returned if the range isn't partitioned
+    {
+      int a[] = {1, 3, 2, 4};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 4)), [](int i) { return i < 3; });
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 3, 2, 4};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      auto ret = std::ranges::is_partitioned(range, [](int i) { return i < 3; });
+      assert(!ret);
+    }
+  }
+
+  { // check that an empty range is partitioned
+    {
+      int a[] = {};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a)), [](int i) { return i < 3; });
+      assert(ret);
+    }
+    {
+      int a[] = {};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a)));
+      auto ret = std::ranges::is_partitioned(range, [](int i) { return i < 3; });
+      assert(ret);
+    }
+  }
+
+  { // check that a single element is partitioned
+    {
+      int a[] = {1};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 1)), [](int i) { return i < 3; });
+      assert(ret);
+    }
+    {
+      int a[] = {1};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 1)));
+      auto ret = std::ranges::is_partitioned(range, [](int i) { return i < 3; });
+      assert(ret);
+    }
+  }
+
+  { // check that it is partitioned when the first element is the partition point
+    {
+      int a[] = {0, 1, 1};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 3)), [](int i) { return i < 1; });
+      assert(ret);
+    }
+    {
+      int a[] = {0, 1, 1};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+      auto ret = std::ranges::is_partitioned(range, [](int i) { return i < 1; });
+      assert(ret);
+    }
+  }
+
+  { // check that it is partitioned when the last element is the partition point
+    {
+      int a[] = {0, 0, 1};
+      auto ret = std::ranges::is_partitioned(Iter(a), Sent(Iter(a + 3)), [](int i) { return i < 1; });
+      assert(ret);
+    }
+    {
+      int a[] = {0, 0, 1};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 3)));
+      auto ret = std::ranges::is_partitioned(range, [](int i) { return i < 1; });
+      assert(ret);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_iterators<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+  test_iterators<const int*>();
+
+  { // check that std:invoke is used
+    struct S {
+      int check;
+      int other;
+
+      constexpr S& identity() {
+        return *this;
+      }
+    };
+    {
+      S a[] = {{1, 2}, {3, 4}, {5, 6}};
+      auto ret = std::ranges::is_partitioned(a, a + 3, &S::check, &S::identity);
+      assert(ret);
+    }
+    {
+      S a[] = {{1, 2}, {3, 4}, {5, 6}};
+      auto ret = std::ranges::is_partitioned(a, &S::check, &S::identity);
+      assert(ret);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/next_permutation.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/next_permutation.pass.cpp
new file mode 100644
index 0000000..541e7e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/next_permutation.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter>
+//   requires ShuffleIterator<Iter>
+//         && LessThanComparable<Iter::value_type>
+//   constexpr bool  // constexpr in C++20
+//   next_permutation(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include <cstdio>
+
+TEST_CONSTEXPR_CXX14 int factorial(int x)
+{
+    int r = 1;
+    for (; x; --x)
+        r *= x;
+    return r;
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    const int sa = sizeof(ia)/sizeof(ia[0]);
+    int prev[sa];
+    for (int e = 0; e <= sa; ++e)
+    {
+        int count = 0;
+        bool x;
+        do
+        {
+            std::copy(ia, ia+e, prev);
+            x = std::next_permutation(Iter(ia), Iter(ia+e));
+            if (e > 1)
+            {
+                if (x)
+                    assert(std::lexicographical_compare(prev, prev+e, ia, ia+e));
+                else
+                    assert(std::lexicographical_compare(ia, ia+e, prev, prev+e));
+            }
+            ++count;
+        } while (x);
+        assert(count == factorial(e));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<bidirectional_iterator<int*>>());
+    static_assert(test<random_access_iterator<int*>>());
+    static_assert(test<int*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/next_permutation_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/next_permutation_comp.pass.cpp
new file mode 100644
index 0000000..0ce7ef4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/next_permutation_comp.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   constexpr bool  // constexpr in C++20
+//   next_permutation(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include <cstdio>
+
+TEST_CONSTEXPR_CXX14 int factorial(int x)
+{
+    int r = 1;
+    for (; x; --x)
+        r *= x;
+    return r;
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    typedef std::greater<int> C;
+    int ia[] = {6, 5, 4, 3, 2, 1};
+    const int sa = sizeof(ia)/sizeof(ia[0]);
+    int prev[sa];
+    for (int e = 0; e <= sa; ++e)
+    {
+        int count = 0;
+        bool x;
+        do
+        {
+            std::copy(ia, ia+e, prev);
+            x = std::next_permutation(Iter(ia), Iter(ia+e), C());
+            if (e > 1)
+            {
+                if (x)
+                    assert(std::lexicographical_compare(prev, prev+e, ia, ia+e, C()));
+                else
+                    assert(std::lexicographical_compare(ia, ia+e, prev, prev+e, C()));
+            }
+            ++count;
+        } while (x);
+        assert(count == factorial(e));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<bidirectional_iterator<int*>>());
+    static_assert(test<random_access_iterator<int*>>());
+    static_assert(test<int*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/prev_permutation.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/prev_permutation.pass.cpp
new file mode 100644
index 0000000..749dfb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/prev_permutation.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter>
+//   requires ShuffleIterator<Iter>
+//         && LessThanComparable<Iter::value_type>
+//   constexpr bool  // constexpr in C++20
+//   prev_permutation(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include <cstdio>
+
+TEST_CONSTEXPR_CXX14 int factorial(int x)
+{
+    int r = 1;
+    for (; x; --x)
+        r *= x;
+    return r;
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    int ia[] = {6, 5, 4, 3, 2, 1};
+    const int sa = sizeof(ia)/sizeof(ia[0]);
+    int prev[sa];
+    for (int e = 0; e <= sa; ++e)
+    {
+        int count = 0;
+        bool x;
+        do
+        {
+            std::copy(ia, ia+e, prev);
+            x = std::prev_permutation(Iter(ia), Iter(ia+e));
+            if (e > 1)
+            {
+                if (x)
+                    assert(std::lexicographical_compare(ia, ia+e, prev, prev+e));
+                else
+                    assert(std::lexicographical_compare(prev, prev+e, ia, ia+e));
+            }
+            ++count;
+        } while (x);
+        assert(count == factorial(e));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<bidirectional_iterator<int*>>());
+    static_assert(test<random_access_iterator<int*>>());
+    static_assert(test<int*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/prev_permutation_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/prev_permutation_comp.pass.cpp
new file mode 100644
index 0000000..6d8539c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/prev_permutation_comp.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<BidirectionalIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   constexpr bool  // constexpr in C++20
+//   prev_permutation(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include <cstdio>
+
+TEST_CONSTEXPR_CXX14 int factorial(int x)
+{
+    int r = 1;
+    for (; x; --x)
+        r *= x;
+    return r;
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    typedef std::greater<int> C;
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    const int sa = sizeof(ia)/sizeof(ia[0]);
+    int prev[sa];
+    for (int e = 0; e <= sa; ++e)
+    {
+        int count = 0;
+        bool x;
+        do
+        {
+            std::copy(ia, ia+e, prev);
+            x = std::prev_permutation(Iter(ia), Iter(ia+e), C());
+            if (e > 1)
+            {
+                if (x)
+                    assert(std::lexicographical_compare(ia, ia+e, prev, prev+e, C()));
+                else
+                    assert(std::lexicographical_compare(prev, prev+e, ia, ia+e, C()));
+            }
+            ++count;
+        } while (x);
+        assert(count == factorial(e));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<bidirectional_iterator<int*>>());
+    static_assert(test<random_access_iterator<int*>>());
+    static_assert(test<int*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/ranges.next_permutation.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/ranges.next_permutation.pass.cpp
new file mode 100644
index 0000000..5e7b839
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/ranges.next_permutation.pass.cpp
@@ -0,0 +1,271 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<bidirectional_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//          class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr ranges::next_permutation_result<I>
+//     ranges::next_permutation(I first, S last, Comp comp = {}, Proj proj = {});
+// template<bidirectional_range R, class Comp = ranges::less,
+//          class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr ranges::next_permutation_result<borrowed_iterator_t<R>>
+//     ranges::next_permutation(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <cstddef>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasNextPermutationIt = requires(Iter first, Sent last) { std::ranges::next_permutation(first, last); };
+
+static_assert(HasNextPermutationIt<int*>);
+static_assert(!HasNextPermutationIt<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasNextPermutationIt<BidirectionalIteratorNotDecrementable>);
+static_assert(!HasNextPermutationIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasNextPermutationIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasNextPermutationIt<const int*>); // not sortable
+
+template <class Range>
+concept HasNextPermutationR = requires(Range range) { std::ranges::next_permutation(range); };
+
+static_assert(HasNextPermutationR<UncheckedRange<int*>>);
+static_assert(!HasNextPermutationR<BidirectionalRangeNotDerivedFrom>);
+static_assert(!HasNextPermutationR<BidirectionalRangeNotDecrementable>);
+static_assert(!HasNextPermutationR<BidirectionalRangeNotSentinelSemiregular>);
+static_assert(!HasNextPermutationR<BidirectionalRangeNotSentinelWeaklyEqualityComparableWith>);
+static_assert(!HasNextPermutationR<UncheckedRange<const int*>>); // not sortable
+
+constexpr size_t factorial(size_t i) {
+  std::array memoized = {1, 1, 2, 6, 24, 120, 720, 5040, 40320};
+  return memoized[i];
+}
+
+template <class Iter, class Range, class Func>
+constexpr bool run_next_permutation(Func call_next_permutation, Range permuted, Range previous) {
+  using Result = std::ranges::next_permutation_result<Iter>;
+
+  std::same_as<Result> decltype(auto) ret = call_next_permutation(permuted);
+  assert(ret.in == permuted.end());
+  bool next_found = ret.found;
+
+  if (std::ranges::distance(permuted) > 1) {
+    if (next_found) {
+      assert(std::ranges::lexicographical_compare(previous, permuted));
+    } else {
+      assert(std::ranges::lexicographical_compare(permuted, previous));
+      assert(std::ranges::is_sorted(permuted));
+    }
+  }
+
+  return next_found;
+}
+
+template <class Iter, class Sent, class Func>
+constexpr void test_next_permutations(Func call_next_permutation) {
+  std::array input = {1, 2, 3, 4};
+  auto current_permutation = input;
+  auto previous_permutation = current_permutation;
+
+  // For all subarrays of `input` from `[0, 0]` to `[0, N - 1]`, call `next_permutation` until no next permutation
+  // exists.
+  // The number of permutations must equal `N!`. `run_next_permutation` checks that each next permutation is
+  // lexicographically greater than the previous. If these two conditions hold (the number of permutations is `N!`, and
+  // each permutation is lexicographically greater than the previous one), it follows that the
+  // `ranges::next_permutation` algorithm works correctly.
+  for (size_t i = 0; i <= current_permutation.size(); ++i) {
+    size_t count = 0;
+    bool next_found = true;
+
+    while (next_found) {
+      ++count;
+      previous_permutation = current_permutation;
+
+      auto current_subrange = std::ranges::subrange(
+          Iter(current_permutation.data()), Sent(Iter(current_permutation.data() + i)));
+      auto previous_subrange = std::ranges::subrange(
+          Iter(previous_permutation.data()), Sent(Iter(previous_permutation.data() + i)));
+
+      next_found = run_next_permutation<Iter>(call_next_permutation, current_subrange, previous_subrange);
+    }
+
+    assert(count == factorial(i));
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_all_permutations() {
+  test_next_permutations<Iter, Sent>([](auto&& range) {
+    return std::ranges::next_permutation(range.begin(), range.end());
+  });
+
+  test_next_permutations<Iter, Sent>([](auto&& range) {
+    return std::ranges::next_permutation(range);
+  });
+}
+
+template <class Iter, class Sent, int N>
+constexpr void test_one(const std::array<int, N> input, bool expected_found, std::array<int, N> expected) {
+  using Result = std::ranges::next_permutation_result<Iter>;
+
+  { // (iterator, sentinel) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+
+    std::same_as<Result> decltype(auto) result = std::ranges::next_permutation(begin, end);
+    assert(result.found == expected_found);
+    assert(result.in == end);
+    assert(in == expected);
+  }
+
+  {  // (range) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+    auto range = std::ranges::subrange(begin, end);
+
+    std::same_as<Result> decltype(auto) result = std::ranges::next_permutation(range);
+    assert(result.found == expected_found);
+    assert(result.in == end);
+    assert(in == expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iter_sent() {
+  test_all_permutations<Iter, Sent>();
+
+  // Empty range.
+  test_one<Iter, Sent, 0>({}, false, {});
+  // 1-element range.
+  test_one<Iter, Sent, 1>({1}, false, {1});
+  // 2-element range.
+  test_one<Iter, Sent, 2>({1, 2}, true, {2, 1});
+  test_one<Iter, Sent, 2>({2, 1}, false, {1, 2});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({1, 2, 3, 4, 5, 6, 7, 8}, true, {1, 2, 3, 4, 5, 6, 8, 7});
+  // Longer sequence, permutations exhausted.
+  test_one<Iter, Sent, 8>({8, 7, 6, 5, 4, 3, 2, 1}, false, {1, 2, 3, 4, 5, 6, 7, 8});
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  test_iter_sent<Iter, Iter>();
+  test_iter_sent<Iter, sentinel_wrapper<Iter>>();
+  test_iter_sent<Iter, sized_sentinel<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iter<bidirectional_iterator<int*>>();
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom predicate works.
+    struct A {
+      int i;
+      constexpr bool comp(const A& rhs) const { return i > rhs.i; }
+      constexpr bool operator==(const A&) const = default;
+    };
+    const std::array input = {A{1}, A{2}, A{3}, A{4}, A{5}};
+    std::array expected = {A{5}, A{4}, A{3}, A{2}, A{1}};
+
+    { // (iterator, sentinel) overload.
+      auto in = input;
+      auto result = std::ranges::next_permutation(in.begin(), in.end(), &A::comp);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+
+    { // (range) overload.
+      auto in = input;
+      auto result = std::ranges::next_permutation(in, &A::comp);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int i;
+      constexpr A negate() const { return A{i * -1}; }
+      constexpr auto operator<=>(const A&) const = default;
+    };
+    const std::array input = {A{1}, A{2}, A{3}, A{4}, A{5}};
+    std::array expected = {A{5}, A{4}, A{3}, A{2}, A{1}};
+
+    { // (iterator, sentinel) overload.
+      auto in = input;
+      auto result = std::ranges::next_permutation(in.begin(), in.end(), {}, &A::negate);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+
+    { // (range) overload.
+      auto in = input;
+      auto result = std::ranges::next_permutation(in, {}, &A::negate);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+  }
+
+  { // Complexity: At most `(last - first) / 2` swaps.
+    const std::array input = {1, 2, 3, 4, 5, 6};
+
+    { // (iterator, sentinel) overload.
+      auto in = input;
+      int swaps_count = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps_count);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps_count);
+
+      std::ranges::next_permutation(begin, end);
+      assert(swaps_count <= (base(end) - base(begin) + 1) / 2);
+    }
+
+    { // (range) overload.
+      auto in = input;
+      int swaps_count = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps_count);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps_count);
+
+      std::ranges::next_permutation(std::ranges::subrange(begin, end));
+      assert(swaps_count <= (base(end) - base(begin) + 1) / 2);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/ranges.prev_permutation.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/ranges.prev_permutation.pass.cpp
new file mode 100644
index 0000000..3ec1af1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.permutation.generators/ranges.prev_permutation.pass.cpp
@@ -0,0 +1,271 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<bidirectional_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//          class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr ranges::prev_permutation_result<I>
+//     ranges::prev_permutation(I first, S last, Comp comp = {}, Proj proj = {});
+// template<bidirectional_range R, class Comp = ranges::less,
+//          class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr ranges::prev_permutation_result<borrowed_iterator_t<R>>
+//     ranges::prev_permutation(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <cstddef>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+concept HasPrevPermutationIt = requires(Iter first, Sent last) { std::ranges::prev_permutation(first, last); };
+
+static_assert(HasPrevPermutationIt<int*>);
+static_assert(!HasPrevPermutationIt<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!HasPrevPermutationIt<BidirectionalIteratorNotDecrementable>);
+static_assert(!HasPrevPermutationIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasPrevPermutationIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasPrevPermutationIt<const int*>); // not sortable
+
+template <class Range>
+concept HasPrevPermutationR = requires(Range range) { std::ranges::prev_permutation(range); };
+
+static_assert(HasPrevPermutationR<UncheckedRange<int*>>);
+static_assert(!HasPrevPermutationR<BidirectionalRangeNotDerivedFrom>);
+static_assert(!HasPrevPermutationR<BidirectionalRangeNotDecrementable>);
+static_assert(!HasPrevPermutationR<BidirectionalRangeNotSentinelSemiregular>);
+static_assert(!HasPrevPermutationR<BidirectionalRangeNotSentinelWeaklyEqualityComparableWith>);
+static_assert(!HasPrevPermutationR<UncheckedRange<const int*>>); // not sortable
+
+constexpr size_t factorial(size_t i) {
+  std::array memoized = {1, 1, 2, 6, 24, 120, 720, 5040, 40320};
+  return memoized[i];
+}
+
+template <class Iter, class Range, class Func>
+constexpr bool run_prev_permutation(Func call_prev_permutation, Range permuted, Range previous) {
+  using Result = std::ranges::prev_permutation_result<Iter>;
+
+  std::same_as<Result> decltype(auto) ret = call_prev_permutation(permuted);
+  assert(ret.in == permuted.end());
+  bool next_found = ret.found;
+
+  if (std::ranges::distance(permuted) > 1) {
+    if (next_found) {
+      assert(std::ranges::lexicographical_compare(permuted, previous));
+    } else {
+      assert(std::ranges::lexicographical_compare(previous, permuted));
+      assert(std::ranges::is_sorted(permuted, std::ranges::greater{}));
+    }
+  }
+
+  return next_found;
+}
+
+template <class Iter, class Sent, class Func>
+constexpr void test_prev_permutations(Func call_prev_permutation) {
+  std::array input = {4, 3, 2, 1};
+  auto current_permutation = input;
+  auto previous_permutation = current_permutation;
+
+  // For all subarrays of `input` from `[0, 0]` to `[0, N - 1]`, call `prev_permutation` until no previous permutation
+  // exists.
+  // The number of permutations must equal `N!`. `run_prev_permutation` checks that each previous permutation is
+  // lexicographically less than the previous. If these two conditions hold (the number of permutations is `N!`, and
+  // each permutation is lexicographically less than the previous one), it follows that the `ranges::prev_permutation`
+  // algorithm works correctly.
+  for (size_t i = 0; i <= current_permutation.size(); ++i) {
+    size_t count = 0;
+    bool next_found = true;
+
+    while (next_found) {
+      ++count;
+      previous_permutation = current_permutation;
+
+      auto current_subrange = std::ranges::subrange(
+          Iter(current_permutation.data()), Sent(Iter(current_permutation.data() + i)));
+      auto previous_subrange = std::ranges::subrange(
+          Iter(previous_permutation.data()), Sent(Iter(previous_permutation.data() + i)));
+
+      next_found = run_prev_permutation<Iter>(call_prev_permutation, current_subrange, previous_subrange);
+    }
+
+    assert(count == factorial(i));
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_all_permutations() {
+  test_prev_permutations<Iter, Sent>([](auto&& range) {
+    return std::ranges::prev_permutation(range.begin(), range.end());
+  });
+
+  test_prev_permutations<Iter, Sent>([](auto&& range) {
+    return std::ranges::prev_permutation(range);
+  });
+}
+
+template <class Iter, class Sent, int N>
+constexpr void test_one(const std::array<int, N> input, bool expected_found, std::array<int, N> expected) {
+  using Result = std::ranges::prev_permutation_result<Iter>;
+
+  { // (iterator, sentinel) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+
+    std::same_as<Result> decltype(auto) result = std::ranges::prev_permutation(begin, end);
+    assert(result.found == expected_found);
+    assert(result.in == end);
+    assert(in == expected);
+  }
+
+  {  // (range) overload.
+    auto in = input;
+    auto begin = Iter(in.data());
+    auto end = Sent(Iter(in.data() + in.size()));
+    auto range = std::ranges::subrange(begin, end);
+
+    std::same_as<Result> decltype(auto) result = std::ranges::prev_permutation(range);
+    assert(result.found == expected_found);
+    assert(result.in == end);
+    assert(in == expected);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iter_sent() {
+  test_all_permutations<Iter, Sent>();
+
+  // Empty range.
+  test_one<Iter, Sent, 0>({}, false, {});
+  // 1-element range.
+  test_one<Iter, Sent, 1>({1}, false, {1});
+  // 2-element range.
+  test_one<Iter, Sent, 2>({1, 2}, false, {2, 1});
+  test_one<Iter, Sent, 2>({2, 1}, true, {1, 2});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({8, 7, 6, 5, 4, 3, 2, 1}, true, {8, 7, 6, 5, 4, 3, 1, 2});
+  // Longer sequence, permutations exhausted.
+  test_one<Iter, Sent, 8>({1, 2, 3, 4, 5, 6, 7, 8}, false, {8, 7, 6, 5, 4, 3, 2, 1});
+}
+
+template <class Iter>
+constexpr void test_iter() {
+  test_iter_sent<Iter, Iter>();
+  test_iter_sent<Iter, sentinel_wrapper<Iter>>();
+  test_iter_sent<Iter, sized_sentinel<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iter<bidirectional_iterator<int*>>();
+  test_iter<random_access_iterator<int*>>();
+  test_iter<contiguous_iterator<int*>>();
+  test_iter<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom predicate works.
+    struct A {
+      int i;
+      constexpr bool comp(const A& rhs) const { return i > rhs.i; }
+      constexpr bool operator==(const A&) const = default;
+    };
+    const std::array input = {A{5}, A{4}, A{3}, A{2}, A{1}};
+    std::array expected = {A{1}, A{2}, A{3}, A{4}, A{5}};
+
+    { // (iterator, sentinel) overload.
+      auto in = input;
+      auto result = std::ranges::prev_permutation(in.begin(), in.end(), &A::comp);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+
+    { // (range) overload.
+      auto in = input;
+      auto result = std::ranges::prev_permutation(in, &A::comp);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int i;
+      constexpr A negate() const { return A{i * -1}; }
+      constexpr auto operator<=>(const A&) const = default;
+    };
+    const std::array input = {A{5}, A{4}, A{3}, A{2}, A{1}};
+    std::array expected = {A{1}, A{2}, A{3}, A{4}, A{5}};
+
+    { // (iterator, sentinel) overload.
+      auto in = input;
+      auto result = std::ranges::prev_permutation(in.begin(), in.end(), {}, &A::negate);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+
+    { // (range) overload.
+      auto in = input;
+      auto result = std::ranges::prev_permutation(in, {}, &A::negate);
+
+      assert(result.found == false);
+      assert(result.in == in.end());
+      assert(in == expected);
+    }
+  }
+
+  { // Complexity: At most `(last - first) / 2` swaps.
+    const std::array input = {6, 5, 4, 3, 2, 1};
+
+    { // (iterator, sentinel) overload.
+      auto in = input;
+      int swaps_count = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps_count);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps_count);
+
+      std::ranges::prev_permutation(begin, end);
+      assert(swaps_count <= (base(end) - base(begin) + 1) / 2);
+    }
+
+    { // (range) overload.
+      auto in = input;
+      int swaps_count = 0;
+      auto begin = adl::Iterator::TrackSwaps(in.data(), swaps_count);
+      auto end = adl::Iterator::TrackSwaps(in.data() + in.size(), swaps_count);
+
+      std::ranges::prev_permutation(std::ranges::subrange(begin, end));
+      assert(swaps_count <= (base(end) - base(begin) + 1) / 2);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/includes.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/includes.pass.cpp
new file mode 100644
index 0000000..0da113f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/includes.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2>
+//   requires HasLess<Iter1::value_type, Iter2::value_type>
+//         && HasLess<Iter2::value_type, Iter1::value_type>
+//   constexpr bool             // constexpr after C++17
+//   includes(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20
+void test()
+{
+    int ia[] = {1, 2, 2, 3, 3, 3, 4, 4, 4, 4};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {2, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1, 2};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]); ((void)sc);
+    int id[] = {3, 3, 3, 3};
+    const unsigned sd = sizeof(id)/sizeof(id[0]); ((void)sd);
+
+    assert(std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib)));
+    assert(!std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib+1)));
+    assert(std::includes(Iter1(ia), Iter1(ia+1), Iter2(ib), Iter2(ib)));
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa)));
+
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ib), Iter2(ib+sb)));
+    assert(!std::includes(Iter1(ib), Iter1(ib+sb), Iter2(ia), Iter2(ia+sa)));
+
+    assert(std::includes(Iter1(ia), Iter1(ia+2), Iter2(ic), Iter2(ic+2)));
+    assert(!std::includes(Iter1(ia), Iter1(ia+2), Iter2(ib), Iter2(ib+2)));
+
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+1)));
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+2)));
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+3)));
+    assert(!std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+4)));
+}
+
+TEST_CONSTEXPR_CXX20
+bool do_tests()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, const int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<forward_iterator<const int*>, const int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, const int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, const int*>();
+
+    test<const int*, cpp17_input_iterator<const int*> >();
+    test<const int*, forward_iterator<const int*> >();
+    test<const int*, bidirectional_iterator<const int*> >();
+    test<const int*, random_access_iterator<const int*> >();
+    test<const int*, const int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    do_tests();
+#if TEST_STD_VER > 17
+    static_assert(do_tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/includes_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/includes_comp.pass.cpp
new file mode 100644
index 0000000..9fab370
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/includes_comp.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator Iter1, InputIterator Iter2, typename Compare>
+//   requires Predicate<Compare, Iter1::value_type, Iter2::value_type>
+//         && Predicate<Compare, Iter2::value_type, Iter1::value_type>
+//   constexpr bool             // constexpr after C++17
+//   includes(Iter1 first1, Iter1 last1, Iter2 first2, Iter2 last2, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20
+void test()
+{
+    int ia[] = {4, 4, 4, 4, 3, 3, 3, 2, 2, 1};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    int ib[] = {4, 2};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {2, 1};
+    const unsigned sc = sizeof(ic)/sizeof(ic[0]); ((void)sc);
+    int id[] = {3, 3, 3, 3};
+    const unsigned sd = sizeof(id)/sizeof(id[0]); ((void)sd);
+
+    assert(std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib), std::greater<int>()));
+    assert(!std::includes(Iter1(ia), Iter1(ia), Iter2(ib), Iter2(ib+1), std::greater<int>()));
+    assert(std::includes(Iter1(ia), Iter1(ia+1), Iter2(ib), Iter2(ib), std::greater<int>()));
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ia), Iter2(ia+sa), std::greater<int>()));
+
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(ib), Iter2(ib+sb), std::greater<int>()));
+    assert(!std::includes(Iter1(ib), Iter1(ib+sb), Iter2(ia), Iter2(ia+sa), std::greater<int>()));
+
+    assert(std::includes(Iter1(ia+8), Iter1(ia+sa), Iter2(ic), Iter2(ic+sc), std::greater<int>()));
+    assert(!std::includes(Iter1(ia+8), Iter1(ia+sa), Iter2(ib), Iter2(ib+sb), std::greater<int>()));
+
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+1), std::greater<int>()));
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+2), std::greater<int>()));
+    assert(std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+3), std::greater<int>()));
+    assert(!std::includes(Iter1(ia), Iter1(ia+sa), Iter2(id), Iter2(id+4), std::greater<int>()));
+}
+
+TEST_CONSTEXPR_CXX20
+bool do_tests()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, const int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<forward_iterator<const int*>, const int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, const int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, const int*>();
+
+    test<const int*, cpp17_input_iterator<const int*> >();
+    test<const int*, forward_iterator<const int*> >();
+    test<const int*, bidirectional_iterator<const int*> >();
+    test<const int*, random_access_iterator<const int*> >();
+    test<const int*, const int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    do_tests();
+#if TEST_STD_VER > 17
+    static_assert(do_tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/ranges_includes.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/ranges_includes.pass.cpp
new file mode 100644
index 0000000..47f6779
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/includes/ranges_includes.pass.cpp
@@ -0,0 +1,353 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          class Proj1 = identity, class Proj2 = identity,
+//          indirect_strict_weak_order<projected<I1, Proj1>, projected<I2, Proj2>> Comp =
+//            ranges::less>
+//   constexpr bool includes(I1 first1, S1 last1, I2 first2, S2 last2, Comp comp = {},
+//                           Proj1 proj1 = {}, Proj2 proj2 = {});                                   // Since C++20
+//
+// template<input_range R1, input_range R2, class Proj1 = identity,
+//          class Proj2 = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R1>, Proj1>,
+//                                     projected<iterator_t<R2>, Proj2>> Comp = ranges::less>
+//   constexpr bool includes(R1&& r1, R2&& r2, Comp comp = {},
+//                           Proj1 proj1 = {}, Proj2 proj2 = {});                                   // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <
+    class Iter1 = int*,
+    class Sent1 = int*,
+    class Iter2 = int*,
+    class Sent2 = int*,
+    class Comp  = std::ranges::less,
+    class Proj1 = std::identity,
+    class Proj2 = std::identity>
+concept HasIncludesIter =
+    requires(Iter1&& iter1, Sent1&& sent1, Iter2&& iter2, Sent2&& sent2, Comp&& comp, Proj1&& proj1, Proj2&& proj2) {
+      std::ranges::includes(
+          std::forward<Iter1>(iter1),
+          std::forward<Sent1>(sent1),
+          std::forward<Iter2>(iter2),
+          std::forward<Sent2>(sent2),
+          std::forward<Comp>(comp),
+          std::forward<Proj1>(proj1),
+          std::forward<Proj2>(proj2));
+    };
+
+static_assert(HasIncludesIter<int*, int*, int*, int*>);
+
+// !std::input_iterator<I1>
+static_assert(!HasIncludesIter<InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S1, I1>
+static_assert(!HasIncludesIter<int*, SentinelForNotSemiregular>);
+
+// !std::input_iterator<I2>
+static_assert(!HasIncludesIter<int*, int*, InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S2, I2>
+static_assert(!HasIncludesIter<int*, int*, int*, SentinelForNotSemiregular>);
+
+// !indirect_strict_weak_order<Comp, projected<I1, Proj1>, projected<I2, Proj2>>
+struct NotAComparator {};
+static_assert(!HasIncludesIter<int*, int*, int*, int*, NotAComparator>);
+
+template <
+    class Range1,
+    class Range2,
+    class Comp  = std::ranges::less,
+    class Proj1 = std::identity,
+    class Proj2 = std::identity>
+concept HasIncludesRange =
+    requires(Range1&& range1, Range2&& range2, Comp&& comp, Proj1&& proj1, Proj2&& proj2) {
+      std::ranges::includes(
+          std::forward<Range1>(range1),
+          std::forward<Range2>(range2),
+          std::forward<Comp>(comp),
+          std::forward<Proj1>(proj1),
+          std::forward<Proj2>(proj2));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasIncludesRange<R<int*>, R<int*>>);
+
+// !std::input_range<R2>
+static_assert(!HasIncludesRange<R<InputIteratorNotDerivedFrom>, R<int*>>);
+
+// !std::input_range<R2>
+static_assert(!HasIncludesRange<R<int*>, R<InputIteratorNotDerivedFrom>>);
+
+// !indirect_strict_weak_order<Comp, projected<iterator_t<R1>, Proj1>,
+//                                   projected<iterator_t<R2>, Proj2>>
+static_assert(!HasIncludesRange<R<int*>, R<int*>, NotAComparator>);
+
+template <class In1, class In2, template <class> class SentWrapper, std::size_t N1, std::size_t N2>
+constexpr void testIncludesImpl(std::array<int, N1> in1, std::array<int, N2> in2, bool expected) {
+  using Sent1 = SentWrapper<In1>;
+  using Sent2 = SentWrapper<In2>;
+
+  // iterator overload
+  {
+    std::same_as<bool> decltype(auto) result = std::ranges::includes(
+        In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}, In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}});
+    assert(result == expected);
+  }
+
+  // range overload
+  {
+    std::ranges::subrange r1{In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}};
+    std::ranges::subrange r2{In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}}};
+    std::same_as<bool> decltype(auto) result = std::ranges::includes(r1, r2);
+    assert(result == expected);
+  }
+}
+
+template <class In1, class In2, template <class> class SentWrapper>
+constexpr void testImpl() {
+  // range 1 shorter than range2
+  {
+    std::array in1{0, 1, 5, 6, 9, 10};
+    std::array in2{3, 6, 7, 9, 13, 15, 100};
+    bool expected = false;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+  // range 2 shorter than range 1 but not subsequence
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8};
+    bool expected = false;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 has the same length but different elements
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8, 15, 17, 19};
+    bool expected = false;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 1 == range 2
+  {
+    std::array in1{0, 1, 2};
+    std::array in2{0, 1, 2};
+    bool expected = true;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 2 is subsequence of range 1
+  {
+    std::array in1{8, 9, 10, 12, 13};
+    std::array in2{8, 10};
+    bool expected = true;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 1 is subsequence of range 2
+  {
+    std::array in1{0, 1, 1};
+    std::array in2{0, 1, 1, 2, 5};
+    bool expected = false;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 2 is subsequence of range 1 with duplicated elements
+  {
+    std::array in1{8, 9, 10, 12, 12, 12};
+    std::array in2{8, 12, 12};
+    bool expected = true;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 2 is not a subsequence of range 1 because of duplicated elements
+  {
+    std::array in1{8, 9, 10, 12, 13};
+    std::array in2{8, 10, 10};
+    bool expected = false;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 1 is empty
+  {
+    std::array<int, 0> in1{};
+    std::array in2{3, 4, 5};
+    bool expected = false;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // range 2 is empty
+  {
+    std::array in1{3, 4, 5};
+    std::array<int, 0> in2{};
+    bool expected = true;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+
+  // both ranges are empty
+  {
+    std::array<int, 0> in1{};
+    std::array<int, 0> in2{};
+    bool expected = true;
+    testIncludesImpl<In1, In2, SentWrapper>(in1, in2, expected);
+  }
+}
+
+template <class Iter2, template <class> class SentWrapper>
+constexpr void withAllPermutationsOfIter1() {
+  // C++17 InputIterator may or may not satisfy std::input_iterator
+  testImpl<cpp20_input_iterator<int*>, Iter2, sentinel_wrapper>();
+  testImpl<forward_iterator<int*>, Iter2, SentWrapper>();
+  testImpl<bidirectional_iterator<int*>, Iter2, SentWrapper>();
+  testImpl<random_access_iterator<int*>, Iter2, SentWrapper>();
+  testImpl<contiguous_iterator<int*>, Iter2, SentWrapper>();
+  testImpl<int*, Iter2, SentWrapper>();
+}
+
+template <template <class> class SentWrapper>
+constexpr void withAllPermutationsOfIter1AndIter2() {
+  withAllPermutationsOfIter1<cpp20_input_iterator<int*>, sentinel_wrapper>();
+  withAllPermutationsOfIter1<forward_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfIter1<bidirectional_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfIter1<random_access_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfIter1<contiguous_iterator<int*>, SentWrapper>();
+  withAllPermutationsOfIter1<int*, SentWrapper>();
+}
+
+constexpr bool test() {
+  withAllPermutationsOfIter1AndIter2<std::type_identity_t>();
+  withAllPermutationsOfIter1AndIter2<sentinel_wrapper>();
+
+  struct Data {
+    int data;
+  };
+
+  // Test custom comparator
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{4}, Data{12}};
+
+    const auto comp = [](const Data& x, const Data& y) { return x.data < y.data; };
+    bool expected   = true;
+
+    // iterator overload
+    {
+      auto result = std::ranges::includes(r1.begin(), r1.end(), r2.begin(), r2.end(), comp);
+      assert(result == expected);
+    }
+
+    // range overload
+    {
+      auto result = std::ranges::includes(r1, r2, comp);
+      assert(result == expected);
+    }
+  }
+
+  // Test custom projection
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{4}, Data{9}};
+
+    const auto proj = &Data::data;
+    bool expected   = false;
+
+    // iterator overload
+    {
+      auto result = std::ranges::includes(r1.begin(), r1.end(), r2.begin(), r2.end(), {}, proj, proj);
+      assert(result == expected);
+    }
+
+    // range overload
+    {
+      auto result = std::ranges::includes(r1, r2, {}, proj, proj);
+      assert(result == expected);
+    }
+  }
+
+  // Complexity: At most 2 * ((last1 - first1) + (last2 - first2)) - 1
+  // comparisons and applications of each projection.
+  {
+    struct CompProjs {
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      constexpr auto comp() {
+        return [this](int x, int y) {
+          ++numberOfComp;
+          return x < y;
+        };
+      }
+
+      constexpr auto proj1() {
+        return [this](const Data& d) {
+          ++numberOfProj1;
+          return d.data;
+        };
+      }
+
+      constexpr auto proj2() {
+        return [this](const Data& d) {
+          ++numberOfProj2;
+          return d.data;
+        };
+      }
+    };
+    std::array<Data, 4> r1{{{0}, {1}, {2}, {3}}};
+    std::array<Data, 2> r2{{{4}, {5}}};
+    const std::size_t maxOperation = 2 * (r1.size() + r2.size()) - 1;
+
+    // iterator overload
+    {
+      CompProjs compProjs{};
+
+      auto result = std::ranges::includes(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), compProjs.comp(), compProjs.proj1(), compProjs.proj2());
+      assert(!result);
+      assert(compProjs.numberOfComp < maxOperation);
+      assert(compProjs.numberOfProj1 < maxOperation);
+      assert(compProjs.numberOfProj2 < maxOperation);
+    }
+
+    // range overload
+    {
+      CompProjs compProjs{};
+
+      auto result = std::ranges::includes(r1, r2, compProjs.comp(), compProjs.proj1(), compProjs.proj2());
+      assert(!result);
+      assert(compProjs.numberOfComp < maxOperation);
+      assert(compProjs.numberOfProj1 < maxOperation);
+      assert(compProjs.numberOfProj2 < maxOperation);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/ranges_set_difference.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/ranges_set_difference.pass.cpp
new file mode 100644
index 0000000..65d0c8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/ranges_set_difference.pass.cpp
@@ -0,0 +1,552 @@
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          weakly_incrementable O, class Comp = ranges::less,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
+//   constexpr set_difference_result<I1, O>
+//     set_difference(I1 first1, S1 last1, I2 first2, S2 last2, O result,
+//                    Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                           // since C++20
+
+// template<input_range R1, input_range R2, weakly_incrementable O,
+//          class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+//   constexpr set_difference_result<borrowed_iterator_t<R1>, O>
+//     set_difference(R1&& r1, R2&& r2, O result,
+//                    Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                           // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+// Test iterator overload's constraints:
+// =====================================
+template <
+    class InIter1,
+    class InIter2,
+    class OutIter,
+    class Sent1 = sentinel_wrapper<InIter1>,
+    class Sent2 = sentinel_wrapper<InIter2>>
+concept HasSetDifferenceIter =
+    requires(InIter1&& inIter1, InIter2&& inIter2, OutIter&& outIter, Sent1&& sent1, Sent2&& sent2) {
+      std::ranges::set_difference(
+          std::forward<InIter1>(inIter1),
+          std::forward<Sent1>(sent1),
+          std::forward<InIter2>(inIter2),
+          std::forward<Sent2>(sent2),
+          std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasSetDifferenceIter<int*, int*, int*, int*, int*>);
+
+// !std::input_iterator<I1>
+static_assert(!HasSetDifferenceIter<InputIteratorNotDerivedFrom, int*, int*>);
+
+// !std::sentinel_for<S1, I1>
+static_assert(!HasSetDifferenceIter<int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::input_iterator<I2>
+static_assert(!HasSetDifferenceIter<int*, InputIteratorNotDerivedFrom, int*>);
+
+// !std::sentinel_for<S2, I2>
+static_assert(!HasSetDifferenceIter<int*, int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetDifferenceIter<int*, int*, WeaklyIncrementableNotMovable>);
+
+// !std::mergeable<I1, I2, O, Comp, Proj1, Proj2>
+static_assert(!HasSetDifferenceIter<MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*>);
+
+// Test range overload's constraints:
+// =====================================
+
+template <class Range1, class Range2, class OutIter>
+concept HasSetDifferenceRange =
+    requires(Range1&& range1, Range2&& range2, OutIter&& outIter) {
+      std::ranges::set_difference(
+          std::forward<Range1>(range1), std::forward<Range2>(range2), std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasSetDifferenceRange<UncheckedRange<int*>, UncheckedRange<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetDifferenceRange<UncheckedRange<InputIteratorNotDerivedFrom>, UncheckedRange<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetDifferenceRange<UncheckedRange<int*>, UncheckedRange<InputIteratorNotDerivedFrom>, int*>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetDifferenceRange<UncheckedRange<int*>, UncheckedRange<int*>, WeaklyIncrementableNotMovable >);
+
+// !std::mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+static_assert(!HasSetDifferenceRange< UncheckedRange<MoveOnly*>, UncheckedRange<MoveOnly*>, MoveOnly*>);
+
+using std::ranges::set_difference_result;
+
+template <class In1, class In2, class Out, std::size_t N1, std::size_t N2, std::size_t N3>
+constexpr void testSetDifferenceImpl(std::array<int, N1> in1, std::array<int, N2> in2, std::array<int, N3> expected) {
+  // TODO: std::ranges::set_difference calls std::ranges::copy
+  // std::ranges::copy(contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>, contiguous_iterator<int*>) doesn't seem to work.
+  // It seems that std::ranges::copy calls std::copy, which unwraps contiguous_iterator<int*> into int*,
+  // and then it failed because there is no == between int* and sentinel_wrapper<contiguous_iterator<int*>>
+  using Sent1 = std::conditional_t<std::contiguous_iterator<In1>, In1, sentinel_wrapper<In1>>;
+  using Sent2 = std::conditional_t<std::contiguous_iterator<In2>, In2, sentinel_wrapper<In2>>;
+
+  // iterator overload
+  {
+    std::array<int, N3> out;
+    std::same_as<set_difference_result<In1, Out>> decltype(auto) result = std::ranges::set_difference(
+        In1{in1.data()},
+        Sent1{In1{in1.data() + in1.size()}},
+        In2{in2.data()},
+        Sent2{In2{in2.data() + in2.size()}},
+        Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in) == in1.data() + in1.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N3> out;
+    std::ranges::subrange r1{In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}};
+    std::ranges::subrange r2{In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}}};
+    std::same_as<set_difference_result<In1, Out>> decltype(auto) result =
+        std::ranges::set_difference(r1, r2, Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in) == in1.data() + in1.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class In1, class In2, class Out>
+constexpr void testImpl() {
+  // range 1 shorter than range2
+  {
+    std::array in1{0, 1, 5, 6, 9, 10};
+    std::array in2{3, 6, 7, 9, 13, 15, 100};
+    std::array expected{0, 1, 5, 10};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 shorter than range 1
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8};
+    std::array expected{6, 12, 15, 16};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 has the same length but different elements
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8, 15, 17, 19};
+    std::array expected{6, 12, 16};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 == range 2
+  {
+    std::array in1{0, 1, 2};
+    std::array in2{0, 1, 2};
+    std::array<int, 0> expected{};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is super set of range 2
+  {
+    std::array in1{8, 8, 10, 12, 13};
+    std::array in2{8, 10};
+    std::array expected{8, 12, 13};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is super set of range 1
+  {
+    std::array in1{0, 1, 1};
+    std::array in2{0, 1, 1, 2, 5};
+    std::array<int, 0> expected{};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is empty
+  {
+    std::array<int, 0> in1{};
+    std::array in2{3, 4, 5};
+    std::array<int, 0> expected{};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is empty
+  {
+    std::array in1{3, 4, 5};
+    std::array<int, 0> in2{};
+    std::array expected{3, 4, 5};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // both ranges are empty
+  {
+    std::array<int, 0> in1{};
+    std::array<int, 0> in2{};
+    std::array<int, 0> expected{};
+    testSetDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // check that ranges::dangling is returned for non-borrowed_range
+  {
+    std::array r1{3, 6, 7, 9};
+    std::array r2{2, 3, 4, 5, 6};
+    std::array<int, 2> out;
+    std::same_as<set_difference_result<std::ranges::dangling, int*>> decltype(auto) result =
+        std::ranges::set_difference(NonBorrowedRange<In1>{r1.data(), r1.size()}, r2, out.data());
+    assert(base(result.out) == out.data() + out.size());
+    assert(std::ranges::equal(out, std::array{7, 9}));
+  }
+}
+
+template <class InIter2, class OutIter>
+constexpr void withAllPermutationsOfInIter1() {
+  // C++17 InputIterator may or may not satisfy std::input_iterator
+  testImpl<cpp20_input_iterator<int*>, InIter2, OutIter>();
+  testImpl<forward_iterator<int*>, InIter2, OutIter>();
+  testImpl<bidirectional_iterator<int*>, InIter2, OutIter>();
+  testImpl<random_access_iterator<int*>, InIter2, OutIter>();
+  testImpl<contiguous_iterator<int*>, InIter2, OutIter>();
+}
+
+template <class OutIter>
+constexpr bool withAllPermutationsOfInIter1AndInIter2() {
+  withAllPermutationsOfInIter1<cpp20_input_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<forward_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<bidirectional_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<random_access_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<contiguous_iterator<int*>, OutIter>();
+  return true;
+}
+
+constexpr void runAllIteratorPermutationsTests() {
+  withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>();
+
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>());
+}
+
+constexpr bool test() {
+  // check that every element is copied exactly once
+  {
+    std::array<TracedCopy, 5> r1{3, 5, 8, 15, 16};
+    std::array<TracedCopy, 3> r2{1, 3, 8};
+
+    // iterator overload
+    {
+      std::array<TracedCopy, 3> out;
+      auto result = std::ranges::set_difference(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 3>{5, 15, 16}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+
+    // range overload
+    {
+      std::array<TracedCopy, 3> out;
+      auto result = std::ranges::set_difference(r1, r2, out.data());
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 3>{5, 15, 16}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+  }
+
+  struct IntAndOrder {
+    int data;
+    int order;
+
+    constexpr auto operator==(const IntAndOrder& o) const { return data == o.data; }
+    constexpr auto operator<=>(const IntAndOrder& o) const { return data <=> o.data; }
+  };
+
+  // equal elements should be copied in the original order and only m-n elements are copied
+  {
+    std::array<IntAndOrder, 5> r1{{{0, 0}, {0, 1}, {0, 2}, {0, 3}, {0, 4}}};
+    std::array<IntAndOrder, 3> r2{{{0, 1}, {0, 2}, {0, 3}}};
+
+    // iterator overload
+    {
+      std::array<IntAndOrder, 2> out;
+      std::ranges::set_difference(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0}, {}, &IntAndOrder::data));
+      // m-n elements are copied in order
+      assert(std::ranges::equal(out, std::array{3, 4}, {}, &IntAndOrder::order));
+    }
+
+    // range overload
+    {
+      std::array<IntAndOrder, 2> out;
+      std::ranges::set_difference(r1, r2, out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0}, {}, &IntAndOrder::data));
+      // ID should be in their original order
+      assert(std::ranges::equal(out, std::array{3, 4}, {}, &IntAndOrder::order));
+    }
+  }
+
+  struct Data {
+    int data;
+
+    constexpr bool smallerThan(const Data& o) const { return data < o.data; }
+  };
+
+  // Test custom comparator
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{8}, Data{9}};
+    using Iter1 = std::array<Data, 3>::iterator;
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result = std::ranges::set_difference(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), [](const Data& x, const Data& y) {
+            return x.data < y.data;
+          });
+
+      assert(std::ranges::equal(out, std::array{4, 12}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result =
+          std::ranges::set_difference(r1, r2, out.data(), [](const Data& x, const Data& y) { return x.data < y.data; });
+
+      assert(std::ranges::equal(out, std::array{4, 12}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Comparator iterator overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result =
+          std::ranges::set_difference(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), &Data::smallerThan);
+
+      assert(std::ranges::equal(out, std::array{4, 12}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Comparator range overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result =
+          std::ranges::set_difference(r1, r2, out.data(), &Data::smallerThan);
+
+      assert(std::ranges::equal(out, std::array{4, 12}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Test Projection
+  {
+    std::array r1{Data{1}, Data{3}, Data{5}};
+    std::array r2{Data{2}, Data{3}, Data{4}};
+    using Iter1 = std::array<Data, 3>::iterator;
+
+    const auto proj = [](const Data& d) { return d.data; };
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result = std::ranges::set_difference(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{1, 5}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result =
+          std::ranges::set_difference(r1, r2, out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{1, 5}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Projection iterator overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result = std::ranges::set_difference(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), {}, &Data::data, &Data::data);
+
+      assert(std::ranges::equal(out, std::array{1, 5}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Projection range overload
+    {
+      std::array<Data, 2> out;
+      std::same_as<set_difference_result<Iter1, Data*>> decltype(auto) result =
+          std::ranges::set_difference(r1, r2, out.data(), std::ranges::less{}, &Data::data, &Data::data);
+
+      assert(std::ranges::equal(out, std::array{1, 5}, {}, &Data::data));
+
+      assert(result.in == r1.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Complexity: At most 2 * ((last1 - first1) + (last2 - first2)) - 1 comparisons and applications of each projection.
+  {
+    std::array<Data, 3> r1{{{4}, {8}, {12}}};
+    std::array<Data, 9> r2{{{1}, {2}, {3}, {5}, {6}, {7}, {9}, {10}, {11}}};
+    std::array expected{4, 8, 12};
+
+    const std::size_t maxOperation = 2 * (r1.size() + r2.size()) - 1;
+
+    // iterator overload
+    {
+      std::array<Data, 3> out;
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      const auto comp = [&numberOfComp](int x, int y) {
+        ++numberOfComp;
+        return x < y;
+      };
+
+      const auto proj1 = [&numberOfProj1](const Data& d) {
+        ++numberOfProj1;
+        return d.data;
+      };
+
+      const auto proj2 = [&numberOfProj2](const Data& d) {
+        ++numberOfProj2;
+        return d.data;
+      };
+
+      std::ranges::set_difference(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), comp, proj1, proj2);
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(numberOfComp < maxOperation);
+      assert(numberOfProj1 < maxOperation);
+      assert(numberOfProj2 < maxOperation);
+    }
+
+    // range overload
+    {
+      std::array<Data, 3> out;
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      const auto comp = [&numberOfComp](int x, int y) {
+        ++numberOfComp;
+        return x < y;
+      };
+
+      const auto proj1 = [&numberOfProj1](const Data& d) {
+        ++numberOfProj1;
+        return d.data;
+      };
+
+      const auto proj2 = [&numberOfProj2](const Data& d) {
+        ++numberOfProj2;
+        return d.data;
+      };
+
+      std::ranges::set_difference(r1, r2, out.data(), comp, proj1, proj2);
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(numberOfComp < maxOperation);
+      assert(numberOfProj1 < maxOperation);
+      assert(numberOfProj2 < maxOperation);
+    }
+  }
+
+  // Comparator convertible to bool
+  {
+    struct ConvertibleToBool {
+      bool b;
+      constexpr operator bool() const { return b; }
+    };
+    Data r1[] = {{2}, {4}};
+    Data r2[] = {{3}, {4}, {5}};
+
+    const auto comp = [](const Data& x, const Data& y) { return ConvertibleToBool{x.data < y.data}; };
+
+    // iterator overload
+    {
+      std::array<Data, 1> out;
+      std::ranges::set_difference(r1, r1 + 2, r2, r2 + 3, out.data(), comp);
+      assert(std::ranges::equal(out, std::array{2}, {}, &Data::data));
+    }
+
+    // range overload
+    {
+      std::array<Data, 1> out;
+      std::ranges::set_difference(r1, r2, out.data(), comp);
+      assert(std::ranges::equal(out, std::array{2}, {}, &Data::data));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  runAllIteratorPermutationsTests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/set_difference.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/set_difference.pass.cpp
new file mode 100644
index 0000000..f82aaae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/set_difference.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && HasLess<InIter2::value_type, InIter1::value_type>
+//         && HasLess<InIter1::value_type, InIter2::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_difference(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//                  OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 31};
+        OutIter end = std::set_difference(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+2, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {22, 42, 52};
+        OutIter end = std::set_difference(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+3, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortable>();
+    test1<NonTrivialSortable>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/set_difference_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/set_difference_comp.pass.cpp
new file mode 100644
index 0000000..b025ce5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.difference/set_difference_comp.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter,
+//          CopyConstructible Compare>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && Predicate<Compare, InIter1::value_type, InIter2::value_type>
+//         && Predicate<Compare, InIter2::value_type, InIter1::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_difference(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//                  OutIter result, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 31};
+        OutIter end = std::set_difference(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+2, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {22, 42, 52};
+        OutIter end = std::set_difference(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+3, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortableWithComp>();
+    test1<NonTrivialSortableWithComp>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/ranges_set_intersection.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/ranges_set_intersection.pass.cpp
new file mode 100644
index 0000000..0ee89e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/ranges_set_intersection.pass.cpp
@@ -0,0 +1,576 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          weakly_incrementable O, class Comp = ranges::less,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
+//   constexpr set_intersection_result<I1, I2, O>
+//     set_intersection(I1 first1, S1 last1, I2 first2, S2 last2, O result,
+//                      Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                         // since C++20
+//
+// template<input_range R1, input_range R2, weakly_incrementable O,
+//          class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+//   constexpr set_intersection_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
+//     set_intersection(R1&& r1, R2&& r2, O result,
+//                      Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                         // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+// Test iterator overload's constraints:
+// =====================================
+template <class InIter1 = int*, class Sent1 = int*, class InIter2 = int*, class Sent2 = int*, class OutIter = int*>
+concept HasSetIntersectionIter =
+    requires(InIter1&& inIter1, InIter2&& inIter2, OutIter&& outIter, Sent1&& sent1, Sent2&& sent2) {
+      std::ranges::set_intersection(
+          std::forward<InIter1>(inIter1),
+          std::forward<Sent1>(sent1),
+          std::forward<InIter2>(inIter2),
+          std::forward<Sent2>(sent2),
+          std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasSetIntersectionIter<int*, int*, int*, int*, int*>);
+
+// !std::input_iterator<I1>
+static_assert(!HasSetIntersectionIter<InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S1, I1>
+static_assert(!HasSetIntersectionIter<int*, SentinelForNotSemiregular>);
+
+// !std::input_iterator<I2>
+static_assert(!HasSetIntersectionIter<int*, int*, InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S2, I2>
+static_assert(!HasSetIntersectionIter<int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetIntersectionIter<int*, int*, int*, int*, WeaklyIncrementableNotMovable>);
+
+// !std::mergeable<I1, I2, O, Comp, Proj1, Proj2>
+static_assert(!HasSetIntersectionIter<MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*>);
+
+// Test range overload's constraints:
+// =====================================
+
+template <class Range1, class Range2, class OutIter>
+concept HasSetIntersectionRange =
+    requires(Range1&& range1, Range2&& range2, OutIter&& outIter) {
+      std::ranges::set_intersection(
+          std::forward<Range1>(range1), std::forward<Range2>(range2), std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasSetIntersectionRange<UncheckedRange<int*>, UncheckedRange<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetIntersectionRange<UncheckedRange<InputIteratorNotDerivedFrom>, UncheckedRange<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetIntersectionRange<UncheckedRange<int*>, UncheckedRange<InputIteratorNotDerivedFrom>, int*>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetIntersectionRange<UncheckedRange<int*>, UncheckedRange<int*>, WeaklyIncrementableNotMovable >);
+
+// !std::mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+static_assert(!HasSetIntersectionRange<UncheckedRange<MoveOnly*>, UncheckedRange<MoveOnly*>, MoveOnly*>);
+
+using std::ranges::set_intersection_result;
+
+template <class In1, class In2, class Out, std::size_t N1, std::size_t N2, std::size_t N3>
+constexpr void testSetIntersectionImpl(std::array<int, N1> in1, std::array<int, N2> in2, std::array<int, N3> expected) {
+  // TODO: std::ranges::set_intersection calls std::ranges::copy
+  // std::ranges::copy(contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>, contiguous_iterator<int*>) doesn't seem to work.
+  // It seems that std::ranges::copy calls std::copy, which unwraps contiguous_iterator<int*> into int*,
+  // and then it failed because there is no == between int* and sentinel_wrapper<contiguous_iterator<int*>>
+  using Sent1 = std::conditional_t<std::contiguous_iterator<In1>, In1, sentinel_wrapper<In1>>;
+  using Sent2 = std::conditional_t<std::contiguous_iterator<In2>, In2, sentinel_wrapper<In2>>;
+
+  // iterator overload
+  {
+    std::array<int, N3> out;
+    std::same_as<set_intersection_result<In1, In2, Out>> decltype(auto) result = std::ranges::set_intersection(
+        In1{in1.data()},
+        Sent1{In1{in1.data() + in1.size()}},
+        In2{in2.data()},
+        Sent2{In2{in2.data() + in2.size()}},
+        Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N3> out;
+    std::ranges::subrange r1{In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}};
+    std::ranges::subrange r2{In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}}};
+    std::same_as<set_intersection_result<In1, In2, Out>> decltype(auto) result =
+        std::ranges::set_intersection(r1, r2, Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class In1, class In2, class Out>
+constexpr void testImpl() {
+  // range 1 shorter than range2
+  {
+    std::array in1{0, 1, 5, 6, 9, 10};
+    std::array in2{3, 6, 7, 9, 13, 15, 100};
+    std::array expected{6, 9};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 shorter than range 1
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8};
+    std::array expected{2, 8};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 has the same length but different elements
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8, 15, 17, 19};
+    std::array expected{2, 8, 15};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 == range 2
+  {
+    std::array in1{0, 1, 2};
+    std::array in2{0, 1, 2};
+    std::array expected{0, 1, 2};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is super set of range 2
+  {
+    std::array in1{8, 8, 10, 12, 13};
+    std::array in2{8, 10};
+    std::array expected{8, 10};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is super set of range 1
+  {
+    std::array in1{0, 1, 1};
+    std::array in2{0, 1, 1, 2, 5};
+    std::array expected{0, 1, 1};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 have no elements in common
+  {
+    std::array in1{7, 7, 9, 12};
+    std::array in2{1, 5, 5, 8, 10};
+    std::array<int, 0> expected{};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 have duplicated equal elements
+  {
+    std::array in1{7, 7, 9, 12};
+    std::array in2{7, 7, 7, 13};
+    std::array expected{7, 7};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is empty
+  {
+    std::array<int, 0> in1{};
+    std::array in2{3, 4, 5};
+    std::array<int, 0> expected{};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is empty
+  {
+    std::array in1{3, 4, 5};
+    std::array<int, 0> in2{};
+    std::array<int, 0> expected{};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // both ranges are empty
+  {
+    std::array<int, 0> in1{};
+    std::array<int, 0> in2{};
+    std::array<int, 0> expected{};
+    testSetIntersectionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // check that ranges::dangling is returned for non-borrowed_range
+  {
+    std::array r1{3, 6, 7, 9};
+    int r2[] = {2, 3, 4, 5, 6};
+    std::array<int, 2> out;
+    std::same_as<set_intersection_result<std::ranges::dangling, int*, int*>> decltype(auto) result =
+        std::ranges::set_intersection(NonBorrowedRange<In1>{r1.data(), r1.size()}, r2, out.data());
+    assert(base(result.in2) == r2 + 5);
+    assert(base(result.out) == out.data() + out.size());
+    assert(std::ranges::equal(out, std::array{3, 6}));
+  }
+}
+
+template <class InIter2, class OutIter>
+constexpr void withAllPermutationsOfInIter1() {
+  // C++17 InputIterator may or may not satisfy std::input_iterator
+  testImpl<cpp20_input_iterator<int*>, InIter2, OutIter>();
+  testImpl<forward_iterator<int*>, InIter2, OutIter>();
+  testImpl<bidirectional_iterator<int*>, InIter2, OutIter>();
+  testImpl<random_access_iterator<int*>, InIter2, OutIter>();
+  testImpl<contiguous_iterator<int*>, InIter2, OutIter>();
+}
+
+template <class OutIter>
+constexpr bool withAllPermutationsOfInIter1AndInIter2() {
+  withAllPermutationsOfInIter1<cpp20_input_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<forward_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<bidirectional_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<random_access_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<contiguous_iterator<int*>, OutIter>();
+  return true;
+}
+
+constexpr void runAllIteratorPermutationsTests() {
+  withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>();
+
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>());
+}
+
+constexpr bool test() {
+  // check that every element is copied exactly once
+  {
+    std::array<TracedCopy, 5> r1{3, 5, 8, 15, 16};
+    std::array<TracedCopy, 3> r2{1, 3, 8};
+
+    // iterator overload
+    {
+      std::array<TracedCopy, 2> out;
+      auto result = std::ranges::set_intersection(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 2>{3, 8}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+
+    // range overload
+    {
+      std::array<TracedCopy, 2> out;
+      auto result = std::ranges::set_intersection(r1, r2, out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 2>{3, 8}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+  }
+
+  struct IntAndOrder {
+    int data;
+    int order;
+
+    constexpr auto operator==(const IntAndOrder& o) const { return data == o.data; }
+    constexpr auto operator<=>(const IntAndOrder& o) const { return data <=> o.data; }
+  };
+
+  // Stable. If [first1, last1) contains m elements that are equivalent to each other and [first2, last2)
+  // contains n elements that are equivalent to them, the first min(m, n) elements are copied from the first
+  // range to the output range, in order.
+  {
+    std::array<IntAndOrder, 5> r1{{{0, 0}, {0, 1}, {0, 2}, {0, 3}, {0, 4}}};
+    std::array<IntAndOrder, 3> r2{{{0, 5}, {0, 6}, {0, 7}}};
+
+    // iterator overload
+    {
+      std::array<IntAndOrder, 3> out;
+      std::ranges::set_intersection(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 0}, {}, &IntAndOrder::data));
+      assert(std::ranges::equal(out, std::array{0, 1, 2}, {}, &IntAndOrder::order));
+    }
+
+    // range overload
+    {
+      std::array<IntAndOrder, 3> out;
+      std::ranges::set_intersection(r1, r2, out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 0}, {}, &IntAndOrder::data));
+      assert(std::ranges::equal(out, std::array{0, 1, 2}, {}, &IntAndOrder::order));
+    }
+  }
+
+  struct Data {
+    int data;
+
+    constexpr bool smallerThan(const Data& o) const { return data < o.data; }
+  };
+
+  // Test custom comparator
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{8}, Data{9}};
+
+    // iterator overload
+    {
+      std::array<Data, 1> out;
+      auto result = std::ranges::set_intersection(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), [](const Data& x, const Data& y) {
+            return x.data < y.data;
+          });
+
+      assert(std::ranges::equal(out, std::array{8}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 1> out;
+      auto result = std::ranges::set_intersection(r1, r2, out.data(), [](const Data& x, const Data& y) {
+        return x.data < y.data;
+      });
+
+      assert(std::ranges::equal(out, std::array{8}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Comparator iterator overload
+    {
+      std::array<Data, 1> out;
+      auto result =
+          std::ranges::set_intersection(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), &Data::smallerThan);
+
+      assert(std::ranges::equal(out, std::array{8}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Comparator range overload
+    {
+      std::array<Data, 1> out;
+      auto result = std::ranges::set_intersection(r1, r2, out.data(), &Data::smallerThan);
+
+      assert(std::ranges::equal(out, std::array{8}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Test Projection
+  {
+    std::array r1{Data{1}, Data{3}, Data{5}};
+    std::array r2{Data{2}, Data{3}, Data{5}};
+
+    const auto proj = [](const Data& d) { return d.data; };
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::set_intersection(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{3, 5}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::set_intersection(r1, r2, out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{3, 5}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Projection iterator overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::set_intersection(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), {}, &Data::data, &Data::data);
+
+      assert(std::ranges::equal(out, std::array{3, 5}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // member pointer Projection range overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::set_intersection(r1, r2, out.data(), std::ranges::less{}, &Data::data, &Data::data);
+
+      assert(std::ranges::equal(out, std::array{3, 5}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Complexity: At most 2 * ((last1 - first1) + (last2 - first2)) - 1 comparisons and applications of each projection.
+  {
+    std::array<Data, 5> r1{{{1}, {3}, {5}, {7}, {9}}};
+    std::array<Data, 5> r2{{{2}, {4}, {6}, {8}, {10}}};
+    std::array<int, 0> expected{};
+
+    const std::size_t maxOperation = 2 * (r1.size() + r2.size()) - 1;
+
+    // iterator overload
+    {
+      std::array<Data, 0> out{};
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      const auto comp = [&numberOfComp](int x, int y) {
+        ++numberOfComp;
+        return x < y;
+      };
+
+      const auto proj1 = [&numberOfProj1](const Data& d) {
+        ++numberOfProj1;
+        return d.data;
+      };
+
+      const auto proj2 = [&numberOfProj2](const Data& d) {
+        ++numberOfProj2;
+        return d.data;
+      };
+
+      std::ranges::set_intersection(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), comp, proj1, proj2);
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(numberOfComp < maxOperation);
+      assert(numberOfProj1 < maxOperation);
+      assert(numberOfProj2 < maxOperation);
+    }
+
+    // range overload
+    {
+      std::array<Data, 0> out{};
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      const auto comp = [&numberOfComp](int x, int y) {
+        ++numberOfComp;
+        return x < y;
+      };
+
+      const auto proj1 = [&numberOfProj1](const Data& d) {
+        ++numberOfProj1;
+        return d.data;
+      };
+
+      const auto proj2 = [&numberOfProj2](const Data& d) {
+        ++numberOfProj2;
+        return d.data;
+      };
+
+      std::ranges::set_intersection(r1, r2, out.data(), comp, proj1, proj2);
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(numberOfComp < maxOperation);
+      assert(numberOfProj1 < maxOperation);
+      assert(numberOfProj2 < maxOperation);
+    }
+  }
+
+  // Comparator convertible to bool
+  {
+    struct ConvertibleToBool {
+      bool b;
+      constexpr operator bool() const { return b; }
+    };
+    Data r1[] = {{3}, {4}};
+    Data r2[] = {{3}, {4}, {5}};
+
+    const auto comp = [](const Data& x, const Data& y) { return ConvertibleToBool{x.data < y.data}; };
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      std::ranges::set_intersection(r1, r1 + 2, r2, r2 + 3, out.data(), comp);
+      assert(std::ranges::equal(out, std::array{3, 4}, {}, &Data::data));
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      std::ranges::set_intersection(r1, r2, out.data(), comp);
+      assert(std::ranges::equal(out, std::array{3, 4}, {}, &Data::data));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  // Cannot static_assert on the entire permutation test because it exceeds the constexpr execution step limit
+  // due to the large number of combination of types of iterators (it is a 3-dimensional cartesian product)
+  // Instead of having one single static_assert that tests all the combinations, in the runAllIteratorPermutationsTests
+  // function, it has lots of smaller static_assert and each of them test 2-dimensional cartesian product which is less
+  // than the step limit.
+  runAllIteratorPermutationsTests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/set_intersection.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/set_intersection.pass.cpp
new file mode 100644
index 0000000..1422bea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/set_intersection.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && HasLess<InIter2::value_type, InIter1::value_type>
+//         && HasLess<InIter1::value_type, InIter2::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_intersection(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//                    OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {33, 41};
+        OutIter end = std::set_intersection(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+2, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {32, 42};
+        OutIter end = std::set_intersection(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+2, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortable>();
+    test1<NonTrivialSortable>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/set_intersection_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/set_intersection_comp.pass.cpp
new file mode 100644
index 0000000..07e4079
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.intersection/set_intersection_comp.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter,
+//          CopyConstructible Compare>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && Predicate<Compare, InIter1::value_type, InIter2::value_type>
+//         && Predicate<Compare, InIter2::value_type, InIter1::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_intersection(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//                    OutIter result, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {33, 41};
+        OutIter end = std::set_intersection(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+2, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {32, 42};
+        OutIter end = std::set_intersection(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+2, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortableWithComp>();
+    test1<NonTrivialSortableWithComp>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/ranges_set_symmetric_difference.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/ranges_set_symmetric_difference.pass.cpp
new file mode 100644
index 0000000..dd453a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/ranges_set_symmetric_difference.pass.cpp
@@ -0,0 +1,506 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          weakly_incrementable O, class Comp = ranges::less,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
+//   constexpr set_symmetric_difference_result<I1, I2, O>
+//     set_symmetric_difference(I1 first1, S1 last1, I2 first2, S2 last2, O result,
+//                      Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                         // since C++20
+//
+// template<input_range R1, input_range R2, weakly_incrementable O,
+//          class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+//   constexpr set_symmetric_difference_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
+//     set_symmetric_difference(R1&& r1, R2&& r2, O result,
+//                      Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});                         // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+// Test iterator overload's constraints:
+// =====================================
+template <class InIter1 = int*, class Sent1 = int*, class InIter2 = int*, class Sent2 = int*, class OutIter = int*>
+concept HasSetSymmetricDifferenceIter =
+    requires(InIter1&& inIter1, InIter2&& inIter2, OutIter&& outIter, Sent1&& sent1, Sent2&& sent2) {
+      std::ranges::set_symmetric_difference(
+          std::forward<InIter1>(inIter1),
+          std::forward<Sent1>(sent1),
+          std::forward<InIter2>(inIter2),
+          std::forward<Sent2>(sent2),
+          std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasSetSymmetricDifferenceIter<int*, int*, int*, int*, int*>);
+
+// !std::input_iterator<I1>
+static_assert(!HasSetSymmetricDifferenceIter<InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S1, I1>
+static_assert(!HasSetSymmetricDifferenceIter<int*, SentinelForNotSemiregular>);
+
+// !std::input_iterator<I2>
+static_assert(!HasSetSymmetricDifferenceIter<int*, int*, InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S2, I2>
+static_assert(!HasSetSymmetricDifferenceIter<int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetSymmetricDifferenceIter<int*, int*, int*, int*, WeaklyIncrementableNotMovable>);
+
+// !std::mergeable<I1, I2, O, Comp, Proj1, Proj2>
+static_assert(!HasSetSymmetricDifferenceIter<MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*>);
+
+// Test range overload's constraints:
+// =====================================
+
+template <class Range1, class Range2, class OutIter>
+concept HasSetSymmetricDifferenceRange =
+    requires(Range1&& range1, Range2&& range2, OutIter&& outIter) {
+      std::ranges::set_symmetric_difference(
+          std::forward<Range1>(range1), std::forward<Range2>(range2), std::forward<OutIter>(outIter));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasSetSymmetricDifferenceRange<R<int*>, R<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetSymmetricDifferenceRange<R<InputIteratorNotDerivedFrom>, R<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetSymmetricDifferenceRange<R<int*>, R<InputIteratorNotDerivedFrom>, int*>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetSymmetricDifferenceRange<R<int*>, R<int*>, WeaklyIncrementableNotMovable >);
+
+// !std::mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+static_assert(!HasSetSymmetricDifferenceRange<R<MoveOnly*>, R<MoveOnly*>, MoveOnly*>);
+
+using std::ranges::set_symmetric_difference_result;
+
+template <class In1, class In2, class Out, std::size_t N1, std::size_t N2, std::size_t N3>
+constexpr void
+testSetSymmetricDifferenceImpl(std::array<int, N1> in1, std::array<int, N2> in2, std::array<int, N3> expected) {
+  // TODO: std::ranges::set_symmetric_difference calls std::ranges::copy
+  // std::ranges::copy(contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>, contiguous_iterator<int*>) doesn't seem to work.
+  // It seems that std::ranges::copy calls std::copy, which unwraps contiguous_iterator<int*> into int*,
+  // and then it failed because there is no == between int* and sentinel_wrapper<contiguous_iterator<int*>>
+  using Sent1 = std::conditional_t<std::contiguous_iterator<In1>, In1, sentinel_wrapper<In1>>;
+  using Sent2 = std::conditional_t<std::contiguous_iterator<In2>, In2, sentinel_wrapper<In2>>;
+
+  // iterator overload
+  {
+    std::array<int, N3> out;
+    std::same_as<set_symmetric_difference_result<In1, In2, Out>> decltype(auto) result =
+        std::ranges::set_symmetric_difference(
+            In1{in1.data()},
+            Sent1{In1{in1.data() + in1.size()}},
+            In2{in2.data()},
+            Sent2{In2{in2.data() + in2.size()}},
+            Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N3> out;
+    std::ranges::subrange r1{In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}};
+    std::ranges::subrange r2{In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}}};
+    std::same_as<set_symmetric_difference_result<In1, In2, Out>> decltype(auto) result =
+        std::ranges::set_symmetric_difference(r1, r2, Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class In1, class In2, class Out>
+constexpr void testImpl() {
+  // range 1 shorter than range2
+  {
+    std::array in1{0, 1, 5, 6, 9, 10};
+    std::array in2{3, 6, 7, 9, 13, 15, 100};
+    std::array expected{0, 1, 3, 5, 7, 10, 13, 15, 100};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 shorter than range 1
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8};
+    std::array expected{0, 6, 12, 15, 16};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 has the same length but different elements
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8, 15, 17, 19};
+    std::array expected{0, 6, 12, 16, 17, 19};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 == range 2
+  {
+    std::array in1{0, 1, 2};
+    std::array in2{0, 1, 2};
+    std::array<int, 0> expected{};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is super set of range 2
+  {
+    std::array in1{8, 8, 10, 12, 13};
+    std::array in2{8, 10};
+    std::array expected{8, 12, 13};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is super set of range 1
+  {
+    std::array in1{0, 1, 1};
+    std::array in2{0, 1, 1, 2, 5};
+    std::array expected{2, 5};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 have no elements in common
+  {
+    std::array in1{7, 7, 9, 12};
+    std::array in2{1, 5, 5, 8, 10};
+    std::array expected{1, 5, 5, 7, 7, 8, 9, 10, 12};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 have duplicated equal elements
+  {
+    std::array in1{7, 7, 9, 12};
+    std::array in2{7, 7, 7, 13};
+    std::array expected{7, 9, 12, 13};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is empty
+  {
+    std::array<int, 0> in1{};
+    std::array in2{3, 4, 5};
+    std::array expected{3, 4, 5};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is empty
+  {
+    std::array in1{3, 4, 5};
+    std::array<int, 0> in2{};
+    std::array expected{3, 4, 5};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // both ranges are empty
+  {
+    std::array<int, 0> in1{};
+    std::array<int, 0> in2{};
+    std::array<int, 0> expected{};
+    testSetSymmetricDifferenceImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // check that ranges::dangling is returned for non-borrowed_range
+  {
+    std::array r1{3, 6, 7, 9};
+    int r2[] = {2, 3, 4, 5, 6};
+    std::array<int, 5> out;
+    std::same_as<set_symmetric_difference_result<std::ranges::dangling, int*, int*>> decltype(auto) result =
+        std::ranges::set_symmetric_difference(NonBorrowedRange<In1>{r1.data(), r1.size()}, r2, out.data());
+    assert(base(result.in2) == r2 + 5);
+    assert(base(result.out) == out.data() + out.size());
+    assert(std::ranges::equal(out, std::array{2, 4, 5, 7, 9}));
+  }
+}
+
+template <class InIter2, class OutIter>
+constexpr void withAllPermutationsOfInIter1() {
+  // C++17 InputIterator may or may not satisfy std::input_iterator
+  testImpl<cpp20_input_iterator<int*>, InIter2, OutIter>();
+  testImpl<forward_iterator<int*>, InIter2, OutIter>();
+  testImpl<bidirectional_iterator<int*>, InIter2, OutIter>();
+  testImpl<random_access_iterator<int*>, InIter2, OutIter>();
+  testImpl<contiguous_iterator<int*>, InIter2, OutIter>();
+}
+
+template <class OutIter>
+constexpr bool withAllPermutationsOfInIter1AndInIter2() {
+  withAllPermutationsOfInIter1<cpp20_input_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<forward_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<bidirectional_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<random_access_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<contiguous_iterator<int*>, OutIter>();
+  return true;
+}
+
+constexpr void runAllIteratorPermutationsTests() {
+  withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>();
+
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>());
+}
+
+constexpr bool test() {
+  // check that every element is copied exactly once
+  {
+    std::array<TracedCopy, 5> r1{3, 5, 8, 15, 16};
+    std::array<TracedCopy, 3> r2{1, 3, 8};
+
+    // iterator overload
+    {
+      std::array<TracedCopy, 4> out;
+      auto result = std::ranges::set_symmetric_difference(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 4>{1, 5, 15, 16}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+
+    // range overload
+    {
+      std::array<TracedCopy, 4> out;
+      auto result = std::ranges::set_symmetric_difference(r1, r2, out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 4>{1, 5, 15, 16}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+  }
+
+  struct IntAndOrder {
+    int data;
+    int order;
+
+    constexpr auto operator==(const IntAndOrder& o) const { return data == o.data; }
+    constexpr auto operator<=>(const IntAndOrder& o) const { return data <=> o.data; }
+  };
+
+  // Stable. If [first1, last1) contains m elements that are equivalent to each other and [first2, last2)
+  // contains n elements that are equivalent to them, the first min(m, n) elements are copied from the first
+  // range to the output range, in order.
+  {
+    std::array<IntAndOrder, 5> r1{{{0, 0}, {0, 1}, {0, 2}, {0, 3}, {0, 4}}};
+    std::array<IntAndOrder, 3> r2{{{0, 5}, {0, 6}, {0, 7}}};
+
+    // iterator overload
+    {
+      std::array<IntAndOrder, 2> out;
+      std::ranges::set_symmetric_difference(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0}, {}, &IntAndOrder::data));
+      assert(std::ranges::equal(out, std::array{3, 4}, {}, &IntAndOrder::order));
+    }
+
+    // range overload
+    {
+      std::array<IntAndOrder, 2> out;
+      std::ranges::set_symmetric_difference(r1, r2, out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0}, {}, &IntAndOrder::data));
+      assert(std::ranges::equal(out, std::array{3, 4}, {}, &IntAndOrder::order));
+    }
+  }
+
+  struct Data {
+    int data;
+
+    constexpr bool smallerThan(const Data& o) const { return data < o.data; }
+  };
+
+  // Test custom comparator
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{8}, Data{9}};
+
+    // iterator overload
+    {
+      std::array<Data, 3> out;
+      auto result = std::ranges::set_symmetric_difference(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), [](const Data& x, const Data& y) {
+            return x.data < y.data;
+          });
+
+      assert(std::ranges::equal(out, std::array{4, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 3> out;
+      auto result = std::ranges::set_symmetric_difference(r1, r2, out.data(), [](const Data& x, const Data& y) {
+        return x.data < y.data;
+      });
+
+      assert(std::ranges::equal(out, std::array{4, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Test Projection
+  {
+    std::array r1{Data{1}, Data{3}, Data{5}};
+    std::array r2{Data{2}, Data{3}, Data{5}};
+
+    const auto proj = [](const Data& d) { return d.data; };
+
+    // iterator overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::set_symmetric_difference(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{1, 2}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 2> out;
+      auto result = std::ranges::set_symmetric_difference(r1, r2, out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{1, 2}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Complexity: At most 2 * ((last1 - first1) + (last2 - first2)) - 1 comparisons and applications of each projection.
+  {
+    struct CompProjs {
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      constexpr auto comp() {
+        return [this](int x, int y) {
+          ++numberOfComp;
+          return x < y;
+        };
+      }
+
+      constexpr auto proj1() {
+        return [this](const Data& d) {
+          ++numberOfProj1;
+          return d.data;
+        };
+      }
+
+      constexpr auto proj2() {
+        return [this](const Data& d) {
+          ++numberOfProj2;
+          return d.data;
+        };
+      }
+    };
+
+    std::array<Data, 1> r1{{{7}}};
+    std::array<Data, 6> r2{{{1}, {2}, {3}, {4}, {5}, {6}}};
+    std::array expected{1, 2, 3, 4, 5, 6, 7};
+
+    const std::size_t maxOperation = 2 * (r1.size() + r2.size()) - 1;
+
+    // iterator overload
+    {
+      std::array<Data, 7> out;
+      CompProjs compProjs{};
+
+      std::ranges::set_symmetric_difference(
+          r1.begin(),
+          r1.end(),
+          r2.begin(),
+          r2.end(),
+          out.data(),
+          compProjs.comp(),
+          compProjs.proj1(),
+          compProjs.proj2());
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(compProjs.numberOfComp < maxOperation);
+      assert(compProjs.numberOfProj1 < maxOperation);
+      assert(compProjs.numberOfProj2 < maxOperation);
+    }
+
+    // range overload
+    {
+      std::array<Data, 7> out;
+      CompProjs compProjs{};
+
+      std::ranges::set_symmetric_difference(r1, r2, out.data(), compProjs.comp(), compProjs.proj1(), compProjs.proj2());
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(compProjs.numberOfComp < maxOperation);
+      assert(compProjs.numberOfProj1 < maxOperation);
+      assert(compProjs.numberOfProj2 < maxOperation);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  // Cannot static_assert on the entire permutation test because it exceeds the constexpr execution step limit
+  // due to the large number of combination of types of iterators (it is a 3-dimensional cartesian product)
+  // Instead of having one single static_assert that tests all the combinations, in the runAllIteratorPermutationsTests
+  // function, it has lots of smaller static_assert and each of them test 2-dimensional cartesian product which is less
+  // than the step limit.
+  runAllIteratorPermutationsTests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/set_symmetric_difference.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/set_symmetric_difference.pass.cpp
new file mode 100644
index 0000000..51418d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/set_symmetric_difference.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && HasLess<InIter2::value_type, InIter1::value_type>
+//         && HasLess<InIter1::value_type, InIter2::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_symmetric_difference(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//                            OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 31, 42, 52};
+        OutIter end = std::set_symmetric_difference(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+5, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 31, 42, 52};
+        OutIter end = std::set_symmetric_difference(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+5, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortable>();
+    test1<NonTrivialSortable>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/set_symmetric_difference_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/set_symmetric_difference_comp.pass.cpp
new file mode 100644
index 0000000..146ed23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.symmetric.difference/set_symmetric_difference_comp.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter,
+//          CopyConstructible Compare>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && Predicate<Compare, InIter1::value_type, InIter2::value_type>
+//         && Predicate<Compare, InIter2::value_type, InIter1::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_symmetric_difference(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//                            OutIter result, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 31, 42, 52};
+        OutIter end = std::set_symmetric_difference(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+5, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 31, 42, 52};
+        OutIter end = std::set_symmetric_difference(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+5, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortableWithComp>();
+    test1<NonTrivialSortableWithComp>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/ranges_set_union.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/ranges_set_union.pass.cpp
new file mode 100644
index 0000000..34eddfd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/ranges_set_union.pass.cpp
@@ -0,0 +1,506 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I1, sentinel_for<I1> S1, input_iterator I2, sentinel_for<I2> S2,
+//          weakly_incrementable O, class Comp = ranges::less,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<I1, I2, O, Comp, Proj1, Proj2>
+//   constexpr set_union_result<I1, I2, O>
+//     set_union(I1 first1, S1 last1, I2 first2, S2 last2, O result, Comp comp = {},
+//               Proj1 proj1 = {}, Proj2 proj2 = {});                                               // Since C++20
+//
+// template<input_range R1, input_range R2, weakly_incrementable O,
+//          class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
+//   requires mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+//   constexpr set_union_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>, O>
+//     set_union(R1&& r1, R2&& r2, O result, Comp comp = {},
+//               Proj1 proj1 = {}, Proj2 proj2 = {});                                               // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "almost_satisfies_types.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+// Test iterator overload's constraints:
+// =====================================
+template <class InIter1 = int*, class Sent1 = int*, class InIter2 = int*, class Sent2 = int*, class OutIter = int*>
+concept HasSetUnionIter =
+    requires(InIter1&& inIter1, InIter2&& inIter2, OutIter&& outIter, Sent1&& sent1, Sent2&& sent2) {
+      std::ranges::set_union(
+          std::forward<InIter1>(inIter1),
+          std::forward<Sent1>(sent1),
+          std::forward<InIter2>(inIter2),
+          std::forward<Sent2>(sent2),
+          std::forward<OutIter>(outIter));
+    };
+
+static_assert(HasSetUnionIter<int*, int*, int*, int*, int*>);
+
+// !std::input_iterator<I1>
+static_assert(!HasSetUnionIter<InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S1, I1>
+static_assert(!HasSetUnionIter<int*, SentinelForNotSemiregular>);
+
+// !std::input_iterator<I2>
+static_assert(!HasSetUnionIter<int*, int*, InputIteratorNotDerivedFrom>);
+
+// !std::sentinel_for<S2, I2>
+static_assert(!HasSetUnionIter<int*, int*, int*, SentinelForNotSemiregular>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetUnionIter<int*, int*, int*, int*, WeaklyIncrementableNotMovable>);
+
+// !std::mergeable<I1, I2, O, Comp, Proj1, Proj2>
+static_assert(!HasSetUnionIter<MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*, MoveOnly*>);
+
+// Test range overload's constraints:
+// =====================================
+
+template <class Range1, class Range2, class OutIter>
+concept HasSetUnionRange =
+    requires(Range1&& range1, Range2&& range2, OutIter&& outIter) {
+      std::ranges::set_union(
+          std::forward<Range1>(range1), std::forward<Range2>(range2), std::forward<OutIter>(outIter));
+    };
+
+template <class T>
+using R = UncheckedRange<T>;
+
+static_assert(HasSetUnionRange<R<int*>, R<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetUnionRange<R<InputIteratorNotDerivedFrom>, R<int*>, int*>);
+
+// !std::input_range<R2>
+static_assert(!HasSetUnionRange<R<int*>, R<InputIteratorNotDerivedFrom>, int*>);
+
+// !std::weakly_incrementable<O>
+static_assert(!HasSetUnionRange<R<int*>, R<int*>, WeaklyIncrementableNotMovable >);
+
+// !std::mergeable<iterator_t<R1>, iterator_t<R2>, O, Comp, Proj1, Proj2>
+static_assert(!HasSetUnionRange<R<MoveOnly*>, R<MoveOnly*>, MoveOnly*>);
+
+using std::ranges::set_union_result;
+
+template <class In1, class In2, class Out, std::size_t N1, std::size_t N2, std::size_t N3>
+constexpr void testSetUnionImpl(std::array<int, N1> in1, std::array<int, N2> in2, std::array<int, N3> expected) {
+  // TODO: std::ranges::set_union calls std::ranges::copy
+  // std::ranges::copy(contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>, contiguous_iterator<int*>) doesn't seem to work.
+  // It seems that std::ranges::copy calls std::copy, which unwraps contiguous_iterator<int*> into int*,
+  // and then it failed because there is no == between int* and sentinel_wrapper<contiguous_iterator<int*>>
+  using Sent1 = std::conditional_t<std::contiguous_iterator<In1>, In1, sentinel_wrapper<In1>>;
+  using Sent2 = std::conditional_t<std::contiguous_iterator<In2>, In2, sentinel_wrapper<In2>>;
+
+  // iterator overload
+  {
+    std::array<int, N3> out;
+    std::same_as<set_union_result<In1, In2, Out>> decltype(auto) result = std::ranges::set_union(
+        In1{in1.data()},
+        Sent1{In1{in1.data() + in1.size()}},
+        In2{in2.data()},
+        Sent2{In2{in2.data() + in2.size()}},
+        Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+
+  // range overload
+  {
+    std::array<int, N3> out;
+    std::ranges::subrange r1{In1{in1.data()}, Sent1{In1{in1.data() + in1.size()}}};
+    std::ranges::subrange r2{In2{in2.data()}, Sent2{In2{in2.data() + in2.size()}}};
+    std::same_as<set_union_result<In1, In2, Out>> decltype(auto) result =
+        std::ranges::set_union(r1, r2, Out{out.data()});
+    assert(std::ranges::equal(out, expected));
+
+    assert(base(result.in1) == in1.data() + in1.size());
+    assert(base(result.in2) == in2.data() + in2.size());
+    assert(base(result.out) == out.data() + out.size());
+  }
+}
+
+template <class In1, class In2, class Out>
+constexpr void testImpl() {
+  // range 1 shorter than range2
+  {
+    std::array in1{0, 1, 5, 6, 9, 10};
+    std::array in2{3, 6, 7, 9, 13, 15, 100};
+    std::array expected{0, 1, 3, 5, 6, 7, 9, 10, 13, 15, 100};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+  // range 2 shorter than range 1
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8};
+    std::array expected{0, 2, 6, 8, 12, 15, 16};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 has the same length but different elements
+  {
+    std::array in1{2, 6, 8, 12, 15, 16};
+    std::array in2{0, 2, 8, 15, 17, 19};
+    std::array expected{0, 2, 6, 8, 12, 15, 16, 17, 19};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 == range 2
+  {
+    std::array in1{0, 1, 2};
+    std::array in2{0, 1, 2};
+    std::array expected{0, 1, 2};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is super set of range 2
+  {
+    std::array in1{8, 8, 10, 12, 13};
+    std::array in2{8, 10};
+    std::array expected{8, 8, 10, 12, 13};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is super set of range 1
+  {
+    std::array in1{0, 1, 1};
+    std::array in2{0, 1, 1, 2, 5};
+    std::array expected{0, 1, 1, 2, 5};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 have no elements in common
+  {
+    std::array in1{7, 7, 9, 12};
+    std::array in2{1, 5, 5, 8, 10};
+    std::array expected{1, 5, 5, 7, 7, 8, 9, 10, 12};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 and range 2 have duplicated equal elements
+  {
+    std::array in1{7, 7, 9, 12};
+    std::array in2{7, 7, 7, 13};
+    std::array expected{7, 7, 7, 9, 12, 13};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 1 is empty
+  {
+    std::array<int, 0> in1{};
+    std::array in2{3, 4, 5};
+    std::array expected{3, 4, 5};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // range 2 is empty
+  {
+    std::array in1{3, 4, 5};
+    std::array<int, 0> in2{};
+    std::array expected{3, 4, 5};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // both ranges are empty
+  {
+    std::array<int, 0> in1{};
+    std::array<int, 0> in2{};
+    std::array<int, 0> expected{};
+    testSetUnionImpl<In1, In2, Out>(in1, in2, expected);
+  }
+
+  // check that ranges::dangling is returned for non-borrowed_range
+  {
+    std::array r1{3, 6, 7, 9};
+    int r2[] = {2, 3, 4, 5, 6};
+    std::array<int, 7> out;
+    std::same_as<set_union_result<std::ranges::dangling, int*, int*>> decltype(auto) result =
+        std::ranges::set_union(NonBorrowedRange<In1>{r1.data(), r1.size()}, r2, out.data());
+    assert(base(result.in2) == r2 + 5);
+    assert(base(result.out) == out.data() + out.size());
+    assert(std::ranges::equal(out, std::array{2, 3, 4, 5, 6, 7, 9}));
+  }
+}
+
+template <class InIter2, class OutIter>
+constexpr void withAllPermutationsOfInIter1() {
+  // C++17 InputIterator may or may not satisfy std::input_iterator
+  testImpl<cpp20_input_iterator<int*>, InIter2, OutIter>();
+  testImpl<forward_iterator<int*>, InIter2, OutIter>();
+  testImpl<bidirectional_iterator<int*>, InIter2, OutIter>();
+  testImpl<random_access_iterator<int*>, InIter2, OutIter>();
+  testImpl<contiguous_iterator<int*>, InIter2, OutIter>();
+}
+
+template <class OutIter>
+constexpr bool withAllPermutationsOfInIter1AndInIter2() {
+  withAllPermutationsOfInIter1<cpp20_input_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<forward_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<bidirectional_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<random_access_iterator<int*>, OutIter>();
+  withAllPermutationsOfInIter1<contiguous_iterator<int*>, OutIter>();
+  return true;
+}
+
+constexpr void runAllIteratorPermutationsTests() {
+  withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>();
+  withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>();
+
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_output_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<cpp20_input_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<forward_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<bidirectional_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<random_access_iterator<int*>>());
+  static_assert(withAllPermutationsOfInIter1AndInIter2<contiguous_iterator<int*>>());
+}
+
+constexpr bool test() {
+  // check that every element is copied exactly once
+  {
+    std::array<TracedCopy, 5> r1{3, 5, 8, 15, 16};
+    std::array<TracedCopy, 3> r2{1, 3, 8};
+
+    // iterator overload
+    {
+      std::array<TracedCopy, 6> out;
+      auto result = std::ranges::set_union(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 6>{1, 3, 5, 8, 15, 16}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+
+    // range overload
+    {
+      std::array<TracedCopy, 6> out;
+      auto result = std::ranges::set_union(r1, r2, out.data());
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+      assert(std::ranges::equal(out, std::array<TracedCopy, 6>{1, 3, 5, 8, 15, 16}));
+
+      assert(std::ranges::all_of(out, &TracedCopy::copiedOnce));
+    }
+  }
+
+  struct IntAndOrder {
+    int data;
+    int order;
+
+    constexpr auto operator==(const IntAndOrder& o) const { return data == o.data; }
+    constexpr auto operator<=>(const IntAndOrder& o) const { return data <=> o.data; }
+  };
+
+  // Stable ([algorithm.stable]). If [first1, last1) contains m elements that are
+  // equivalent to each other and [first2, last2) contains n elements that are
+  // equivalent to them, then all m elements from the first range are copied to the
+  // output range, in order, and then the final max(n-m,0) elements from the second
+  // range are copied to the output range, in order.
+  {
+    std::array<IntAndOrder, 3> r1{{{0, 0}, {0, 1}, {0, 2}}};
+    std::array<IntAndOrder, 5> r2{{{0, 3}, {0, 4}, {0, 5}, {0, 6}, {0, 7}}};
+
+    // iterator overload
+    {
+      std::array<IntAndOrder, 5> out;
+      std::ranges::set_union(r1.begin(), r1.end(), r2.begin(), r2.end(), out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 0, 0, 0}, {}, &IntAndOrder::data));
+      assert(std::ranges::equal(out, std::array{0, 1, 2, 6, 7}, {}, &IntAndOrder::order));
+    }
+
+    // range overload
+    {
+      std::array<IntAndOrder, 5> out;
+      std::ranges::set_union(r1, r2, out.data());
+
+      assert(std::ranges::equal(out, std::array{0, 0, 0, 0, 0}, {}, &IntAndOrder::data));
+      assert(std::ranges::equal(out, std::array{0, 1, 2, 6, 7}, {}, &IntAndOrder::order));
+    }
+  }
+
+  struct Data {
+    int data;
+  };
+
+  // Test custom comparator
+  {
+    std::array r1{Data{4}, Data{8}, Data{12}};
+    std::array r2{Data{8}, Data{9}};
+
+    // iterator overload
+    {
+      std::array<Data, 4> out;
+      auto result = std::ranges::set_union(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), [](const Data& x, const Data& y) {
+            return x.data < y.data;
+          });
+
+      assert(std::ranges::equal(out, std::array{4, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 4> out;
+      auto result = std::ranges::set_union(r1, r2, out.data(), [](const Data& x, const Data& y) {
+        return x.data < y.data;
+      });
+
+      assert(std::ranges::equal(out, std::array{4, 8, 9, 12}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Test Projection
+  {
+    std::array r1{Data{1}, Data{3}, Data{5}};
+    std::array r2{Data{2}, Data{3}, Data{5}};
+
+    const auto proj = [](const Data& d) { return d.data; };
+
+    // iterator overload
+    {
+      std::array<Data, 4> out;
+      auto result = std::ranges::set_union(
+          r1.begin(), r1.end(), r2.begin(), r2.end(), out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{1, 2, 3, 5}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+
+    // range overload
+    {
+      std::array<Data, 4> out;
+      auto result = std::ranges::set_union(r1, r2, out.data(), std::ranges::less{}, proj, proj);
+
+      assert(std::ranges::equal(out, std::array{1, 2, 3, 5}, {}, &Data::data));
+
+      assert(result.in1 == r1.end());
+      assert(result.in2 == r2.end());
+      assert(result.out == out.end());
+    }
+  }
+
+  // Complexity: At most 2 * ((last1 - first1) + (last2 - first2)) - 1 comparisons and applications of each projection.
+  {
+    struct CompProjs {
+      std::size_t numberOfComp  = 0;
+      std::size_t numberOfProj1 = 0;
+      std::size_t numberOfProj2 = 0;
+
+      constexpr auto comp() {
+        return [this](int x, int y) {
+          ++numberOfComp;
+          return x < y;
+        };
+      }
+
+      constexpr auto proj1() {
+        return [this](const Data& d) {
+          ++numberOfProj1;
+          return d.data;
+        };
+      }
+
+      constexpr auto proj2() {
+        return [this](const Data& d) {
+          ++numberOfProj2;
+          return d.data;
+        };
+      }
+    };
+
+    std::array<Data, 3> r1{{{0}, {1}, {2}}};
+    std::array<Data, 4> r2{{{0}, {2}, {2}, {5}}};
+    std::array expected{0, 1, 2, 2, 5};
+
+    const std::size_t maxOperation = 2 * (r1.size() + r2.size()) - 1;
+
+    // iterator overload
+    {
+      std::array<Data, 5> out;
+      CompProjs compProjs{};
+
+      std::ranges::set_union(
+          r1.begin(),
+          r1.end(),
+          r2.begin(),
+          r2.end(),
+          out.data(),
+          compProjs.comp(),
+          compProjs.proj1(),
+          compProjs.proj2());
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(compProjs.numberOfComp < maxOperation);
+      assert(compProjs.numberOfProj1 < maxOperation);
+      assert(compProjs.numberOfProj2 < maxOperation);
+    }
+
+    // range overload
+    {
+      std::array<Data, 5> out;
+      CompProjs compProjs{};
+
+      std::ranges::set_union(r1, r2, out.data(), compProjs.comp(), compProjs.proj1(), compProjs.proj2());
+
+      assert(std::ranges::equal(out, expected, {}, &Data::data));
+      assert(compProjs.numberOfComp < maxOperation);
+      assert(compProjs.numberOfProj1 < maxOperation);
+      assert(compProjs.numberOfProj2 < maxOperation);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  // Cannot static_assert on the entire permutation test because it exceeds the constexpr execution step limit
+  // due to the large number of combination of types of iterators (it is a 3-dimensional cartesian product)
+  // Instead of having one single static_assert that tests all the combinations, in the runAllIteratorPermutationsTests
+  // function, it has lots of smaller static_assert and each of them test 2-dimensional cartesian product which is less
+  // than the step limit.
+  runAllIteratorPermutationsTests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union.pass.cpp
new file mode 100644
index 0000000..06bd15b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && HasLess<InIter2::value_type, InIter1::value_type>
+//         && HasLess<InIter1::value_type, InIter2::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_union(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//             OutIter result);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 33, 31, 41, 42, 52};
+        OutIter end = std::set_union(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+7, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 32, 31, 43, 42, 52};
+        OutIter end = std::set_union(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result));
+        assert(std::lexicographical_compare(result, base(end), expected, expected+7, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortable>();
+    test1<NonTrivialSortable>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union_comp.pass.cpp
new file mode 100644
index 0000000..cafd6d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union_comp.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter,
+//          CopyConstructible Compare>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && Predicate<Compare, InIter1::value_type, InIter2::value_type>
+//         && Predicate<Compare, InIter2::value_type, InIter1::value_type>
+//   constexpr OutIter       // constexpr after C++17
+//   set_union(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//             OutIter result, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../sortable_helpers.h"
+
+template<class T, class Iter1, class Iter2, class OutIter>
+TEST_CONSTEXPR_CXX20 void test4()
+{
+    const T a[] = {11, 33, 31, 41};
+    const T b[] = {22, 32, 43, 42, 52};
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 33, 31, 41, 42, 52};
+        OutIter end = std::set_union(Iter1(a), Iter1(a+4), Iter2(b), Iter2(b+5), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+7, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+    {
+        T result[20] = {};
+        T expected[] = {11, 22, 32, 31, 43, 42, 52};
+        OutIter end = std::set_union(Iter1(b), Iter1(b+5), Iter2(a), Iter2(a+4), OutIter(result), typename T::Comparator());
+        assert(std::lexicographical_compare(result, base(end), expected, expected+7, T::less) == 0);
+        for (const T *it = base(end); it != result+20; ++it) {
+            assert(it->value == 0);
+        }
+    }
+}
+
+template<class T, class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test4<T, Iter1, Iter2, cpp17_output_iterator<T*> >();
+    test4<T, Iter1, Iter2, forward_iterator<T*> >();
+    test4<T, Iter1, Iter2, bidirectional_iterator<T*> >();
+    test4<T, Iter1, Iter2, random_access_iterator<T*> >();
+    test4<T, Iter1, Iter2, T*>();
+}
+
+template<class T, class Iter1>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test3<T, Iter1, cpp17_input_iterator<const T*> >();
+    test3<T, Iter1, forward_iterator<const T*> >();
+    test3<T, Iter1, bidirectional_iterator<const T*> >();
+    test3<T, Iter1, random_access_iterator<const T*> >();
+    test3<T, Iter1, const T*>();
+}
+
+template<class T>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test2<T, cpp17_input_iterator<const T*> >();
+    test2<T, forward_iterator<const T*> >();
+    test2<T, bidirectional_iterator<const T*> >();
+    test2<T, random_access_iterator<const T*> >();
+    test2<T, const T*>();
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    test1<TrivialSortableWithComp>();
+    test1<NonTrivialSortableWithComp>();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union_move.pass.cpp
new file mode 100644
index 0000000..b252560
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.set.operations/set.union/set_union_move.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter1, InputIterator InIter2, typename OutIter,
+//          CopyConstructible Compare>
+//   requires OutputIterator<OutIter, InIter1::reference>
+//         && OutputIterator<OutIter, InIter2::reference>
+//         && Predicate<Compare, InIter1::value_type, InIter2::value_type>
+//         && Predicate<Compare, InIter2::value_type, InIter1::value_type>
+//   OutIter
+//   set_union(InIter1 first1, InIter1 last1, InIter2 first2, InIter2 last2,
+//             OutIter result, Compare comp);
+
+// UNSUPPORTED: c++03
+
+#include <algorithm>
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+int main(int, char**)
+{
+    std::vector<MoveOnly> lhs, rhs;
+    lhs.push_back(MoveOnly(2));
+    rhs.push_back(MoveOnly(2));
+
+    std::vector<MoveOnly> res;
+    std::set_union(std::make_move_iterator(lhs.begin()),
+                   std::make_move_iterator(lhs.end()),
+                   std::make_move_iterator(rhs.begin()),
+                   std::make_move_iterator(rhs.end()), std::back_inserter(res));
+
+    assert(res.size() == 1);
+    assert(res[0].get() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted.pass.cpp
new file mode 100644
index 0000000..67d7a9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted.pass.cpp
@@ -0,0 +1,198 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   bool
+//   is_sorted(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 0, 1, 1};
+    int ib[] = {1, 1, 0, 0};
+    return     std::is_sorted(std::begin(ia), std::end(ia))
+           && !std::is_sorted(std::begin(ib), std::end(ib));
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    {
+    int a[] = {0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a)));
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+
+    {
+    int a[] = {0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+
+    {
+    int a[] = {0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+
+    {
+    int a[] = {0, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {0, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+    {
+    int a[] = {1, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa)));
+    }
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_comp.pass.cpp
new file mode 100644
index 0000000..103bcf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_comp.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   bool
+//   is_sorted(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 1, 0, 0};
+    int ib[] = {0, 0, 1, 1};
+    return     std::is_sorted(std::begin(ia), std::end(ia), std::greater<int>())
+           && !std::is_sorted(std::begin(ib), std::end(ib), std::greater<int>());
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    {
+    int a[] = {0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a)));
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+
+    {
+    int a[] = {0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+
+    {
+    int a[] = {0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+
+    {
+    int a[] = {0, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {0, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(!std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+    {
+    int a[] = {1, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted(Iter(a), Iter(a+sa), std::greater<int>()));
+    }
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_until.pass.cpp
new file mode 100644
index 0000000..229ce58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_until.pass.cpp
@@ -0,0 +1,198 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter>
+//   requires LessThanComparable<Iter::value_type>
+//   Iter
+//   is_sorted_until(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {0, 1, 0};
+    int ib[] = {0, 1, 1};
+    return    (std::is_sorted_until(std::begin(ia), std::end(ia)) == ia+2)
+           && (std::is_sorted_until(std::begin(ib), std::end(ib)) == ib+3);
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    {
+    int a[] = {0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a)) == Iter(a));
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+
+    {
+    int a[] = {0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+
+    {
+    int a[] = {0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+2));
+    }
+    {
+    int a[] = {0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+2));
+    }
+    {
+    int a[] = {1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+
+    {
+    int a[] = {0, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+3));
+    }
+    {
+    int a[] = {0, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+2));
+    }
+    {
+    int a[] = {0, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+2));
+    }
+    {
+    int a[] = {0, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+3));
+    }
+    {
+    int a[] = {0, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+2));
+    }
+    {
+    int a[] = {1, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+2));
+    }
+    {
+    int a[] = {1, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+3));
+    }
+    {
+    int a[] = {1, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa)) == Iter(a+sa));
+    }
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_until_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_until_comp.pass.cpp
new file mode 100644
index 0000000..617cd7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/is_sorted_until_comp.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<ForwardIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires CopyConstructible<Compare>
+//   Iter
+//   is_sorted_until(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int ia[] = {1, 0, 1};
+    int ib[] = {1, 1, 0};
+    return    (std::is_sorted_until(std::begin(ia), std::end(ia), std::greater<int>()) == ia+2)
+           && (std::is_sorted_until(std::begin(ib), std::end(ib), std::greater<int>()) == ib+3);
+    }
+#endif
+
+template <class Iter>
+void
+test()
+{
+    {
+    int a[] = {0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a), std::greater<int>()) == Iter(a));
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+
+    {
+    int a[] = {0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+
+    {
+    int a[] = {0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+2));
+    }
+    {
+    int a[] = {0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+2));
+    }
+    {
+    int a[] = {1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+
+    {
+    int a[] = {0, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {0, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+3));
+    }
+    {
+    int a[] = {0, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+2));
+    }
+    {
+    int a[] = {0, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+2));
+    }
+    {
+    int a[] = {0, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {0, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {0, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {0, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+1));
+    }
+    {
+    int a[] = {1, 0, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 0, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+3));
+    }
+    {
+    int a[] = {1, 0, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+2));
+    }
+    {
+    int a[] = {1, 0, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+2));
+    }
+    {
+    int a[] = {1, 1, 0, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 1, 0, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+3));
+    }
+    {
+    int a[] = {1, 1, 1, 0};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+    {
+    int a[] = {1, 1, 1, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    assert(std::is_sorted_until(Iter(a), Iter(a+sa), std::greater<int>()) == Iter(a+sa));
+    }
+}
+
+int main(int, char**)
+{
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/ranges.is_sorted.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/ranges.is_sorted.pass.cpp
new file mode 100644
index 0000000..b8831f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/ranges.is_sorted.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//   constexpr bool ranges::is_sorted(I first, S last, Comp comp = {}, Proj proj = {});
+// template<forward_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   constexpr bool ranges::is_sorted(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = Iter>
+concept HasIsSortedIt = requires(Iter iter, Sent sent) { std::ranges::is_sorted(iter, sent); };
+
+struct HasNoComparator {};
+
+static_assert(HasIsSortedIt<int*>);
+static_assert(!HasIsSortedIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasIsSortedIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasIsSortedIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasIsSortedIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasIsSortedIt<HasNoComparator*>);
+
+template <class Range>
+concept HasIsSortedR = requires(Range range) { std::ranges::is_sorted(range); };
+
+static_assert(HasIsSortedR<UncheckedRange<int*>>);
+static_assert(!HasIsSortedR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasIsSortedR<ForwardRangeNotIncrementable>);
+static_assert(!HasIsSortedR<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasIsSortedR<ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasIsSortedR<UncheckedRange<HasNoComparator*>>);
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 3};
+      std::same_as<bool> decltype(auto) ret = std::ranges::is_sorted(Iter(a), Sent(Iter(a + 5)));
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 3};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      std::same_as<bool> decltype(auto) ret = std::ranges::is_sorted(range);
+      assert(!ret);
+    }
+  }
+
+  { // second element isn't sorted
+    {
+      int a[] = {1, 0, 3, 4, 5};
+      auto ret = std::ranges::is_sorted(Iter(a), Sent(Iter(a + 5)));
+      assert(!ret);
+    }
+    {
+      int a[] = {1, 0, 3, 4, 5};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      auto ret = std::ranges::is_sorted(range);
+      assert(!ret);
+    }
+  }
+
+  { // all elements are sorted
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::is_sorted(Iter(a), Sent(Iter(a + 5)));
+      assert(ret);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      auto ret = std::ranges::is_sorted(range);
+      assert(ret);
+    }
+  }
+
+  { // check that the comparator is used
+    {
+      int a[] = {5, 4, 3, 2};
+      auto ret = std::ranges::is_sorted(Iter(a), Sent(Iter(a + 4)), std::ranges::greater{});
+      assert(ret);
+    }
+    {
+      int a[] = {5, 4, 3, 2};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      auto ret = std::ranges::is_sorted(range, std::ranges::greater{});
+      assert(ret);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      int a[] = {};
+      auto ret = std::ranges::is_sorted(Iter(a), Sent(Iter(a)));
+      assert(ret);
+    }
+    {
+      int a[] = {};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a)));
+      auto ret = std::ranges::is_sorted(range);
+      assert(ret);
+    }
+  }
+
+  { // check that a range with a single element works
+    {
+      int a[] = {32};
+      auto ret = std::ranges::is_sorted(Iter(a), Sent(Iter(a + 1)));
+      assert(ret);
+    }
+    {
+      int a[] = {32};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 1)));
+      auto ret = std::ranges::is_sorted(range);
+      assert(ret);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+  test_iterators<const int*>();
+
+  { // check that the projection is used
+    struct S {
+      int i;
+      constexpr S(int i_) : i(i_) {}
+    };
+    {
+      S a[] = {1, 2, 3};
+      auto ret = std::ranges::is_sorted(a, a + 3, {}, &S::i);
+      assert(ret);
+    }
+    {
+      S a[] = {1, 2, 3};
+      auto ret = std::ranges::is_sorted(a, {}, &S::i);
+      assert(ret);
+    }
+  }
+
+  { // check that a dangling range works
+    assert(std::ranges::is_sorted(std::array{1, 2, 3, 4}));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/ranges.is_sorted_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/ranges.is_sorted_until.pass.cpp
new file mode 100644
index 0000000..c5a0fe8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/is.sorted/ranges.is_sorted_until.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<forward_iterator I, sentinel_for<I> S, class Proj = identity,
+//          indirect_strict_weak_order<projected<I, Proj>> Comp = ranges::less>
+//   constexpr I ranges::is_sorted_until(I first, S last, Comp comp = {}, Proj proj = {});
+// template<forward_range R, class Proj = identity,
+//          indirect_strict_weak_order<projected<iterator_t<R>, Proj>> Comp = ranges::less>
+//   constexpr borrowed_iterator_t<R>
+//     ranges::is_sorted_until(R&& r, Comp comp = {}, Proj proj = {});
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+template <class Iter, class Sent = Iter>
+concept HasIsSortedUntilIt = requires(Iter iter, Sent sent) { std::ranges::is_sorted_until(iter, sent); };
+
+struct HasNoComparator {};
+
+static_assert(HasIsSortedUntilIt<int*>);
+static_assert(!HasIsSortedUntilIt<ForwardIteratorNotDerivedFrom>);
+static_assert(!HasIsSortedUntilIt<ForwardIteratorNotIncrementable>);
+static_assert(!HasIsSortedUntilIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasIsSortedUntilIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasIsSortedUntilIt<HasNoComparator*>);
+
+template <class Range>
+concept HasIsSortedUntilR = requires(Range range) { std::ranges::is_sorted_until(range); };
+
+static_assert(HasIsSortedUntilR<UncheckedRange<int*>>);
+static_assert(!HasIsSortedUntilR<ForwardRangeNotDerivedFrom>);
+static_assert(!HasIsSortedUntilR<ForwardRangeNotIncrementable>);
+static_assert(!HasIsSortedUntilR<ForwardRangeNotSentinelSemiregular>);
+static_assert(!HasIsSortedUntilR<ForwardRangeNotSentinelEqualityComparableWith>);
+static_assert(!HasIsSortedUntilR<UncheckedRange<HasNoComparator*>>);
+
+template <class Iter, class Sent = Iter>
+constexpr void test_iterators() {
+  { // simple test
+    {
+      int a[] = {1, 2, 3, 4, 3};
+      std::same_as<Iter> auto ret = std::ranges::is_sorted_until(Iter(a), Sent(Iter(a + 5)));
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 3};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      std::same_as<Iter> auto ret = std::ranges::is_sorted_until(range);
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // second element isn't sorted
+    {
+      int a[] = {1, 0, 3, 4, 5};
+      auto ret = std::ranges::is_sorted_until(Iter(a), Sent(Iter(a + 5)));
+      assert(base(ret) == a + 1);
+    }
+    {
+      int a[] = {1, 0, 3, 4, 5};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      auto ret = std::ranges::is_sorted_until(range);
+      assert(base(ret) == a + 1);
+    }
+  }
+
+  { // all elements are sorted
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      auto ret = std::ranges::is_sorted_until(Iter(a), Sent(Iter(a + 5)));
+      assert(base(ret) == a + 5);
+    }
+    {
+      int a[] = {1, 2, 3, 4, 5};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 5)));
+      auto ret = std::ranges::is_sorted_until(range);
+      assert(base(ret) == a + 5);
+    }
+  }
+
+  { // check that the comparator is used
+    {
+      int a[] = {5, 4, 3, 2};
+      auto ret = std::ranges::is_sorted_until(Iter(a), Sent(Iter(a + 4)), std::ranges::greater{});
+      assert(base(ret) == a + 4);
+    }
+    {
+      int a[] = {5, 4, 3, 2};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 4)));
+      auto ret = std::ranges::is_sorted_until(range, std::ranges::greater{});
+      assert(base(ret) == a + 4);
+    }
+  }
+
+  { // check that an empty range works
+    {
+      int a[] = {};
+      auto ret = std::ranges::is_sorted_until(Iter(a), Sent(Iter(a)));
+      assert(base(ret) == a);
+    }
+    {
+      int a[] = {};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a)));
+      auto ret = std::ranges::is_sorted_until(range);
+      assert(base(ret) == a);
+    }
+  }
+
+  { // check that a range with a single element works
+    {
+      int a[] = {32};
+      auto ret = std::ranges::is_sorted_until(Iter(a), Sent(Iter(a + 1)));
+      assert(base(ret) == a + 1);
+    }
+    {
+      int a[] = {32};
+      auto range = std::ranges::subrange(Iter(a), Sent(Iter(a + 1)));
+      auto ret = std::ranges::is_sorted_until(range);
+      assert(base(ret) == a + 1);
+    }
+  }
+}
+
+constexpr bool test() {
+  test_iterators<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_iterators<forward_iterator<int*>>();
+  test_iterators<bidirectional_iterator<int*>>();
+  test_iterators<random_access_iterator<int*>>();
+  test_iterators<contiguous_iterator<int*>>();
+  test_iterators<int*>();
+  test_iterators<const int*>();
+
+  { // check that the projection is used
+    struct S {
+      int i;
+      constexpr S(int i_) : i(i_) {}
+    };
+    {
+      S a[] = {1, 2, 3};
+      auto ret = std::ranges::is_sorted_until(a, a + 3, {}, &S::i);
+      assert(base(ret) == a + 3);
+    }
+    {
+      S a[] = {1, 2, 3};
+      auto ret = std::ranges::is_sorted_until(a, {}, &S::i);
+      assert(base(ret) == a + 3);
+    }
+  }
+
+  { // check that std::ranges::dangling is returned
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) ret =
+        std::ranges::is_sorted_until(std::array{1, 2, 3});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/partial_sort_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/partial_sort_copy.pass.cpp
new file mode 100644
index 0000000..8934711
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/partial_sort_copy.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, RandomAccessIterator RAIter>
+//   requires ShuffleIterator<RAIter>
+//         && OutputIterator<RAIter, InIter::reference>
+//         && HasLess<InIter::value_type, RAIter::value_type>
+//         && LessThanComparable<RAIter::value_type>
+//   constexpr RAIter  // constexpr in C++20
+//   partial_sort_copy(InIter first, InIter last, RAIter result_first, RAIter result_last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter, class OutIter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {};
+    for (int n = 0; n < 15; ++n) {
+        for (int m = 0; m < 15; ++m) {
+            OutIter it = std::partial_sort_copy(Iter(orig), Iter(orig+n), OutIter(work), OutIter(work+m));
+            if (n <= m) {
+                assert(it == OutIter(work+n));
+                assert(std::is_permutation(OutIter(work), it, orig));
+            } else {
+                assert(it == OutIter(work+m));
+            }
+            assert(std::is_sorted(OutIter(work), it));
+            if (it != OutIter(work)) {
+                // At most m-1 elements in the input are less than the biggest element in the result.
+                int count = 0;
+                for (int i = m; i < n; ++i) {
+                    count += (T(orig[i]) < *(it - 1));
+                }
+                assert(count < m);
+            }
+        }
+    }
+
+    {
+        int input[] = {3, 4, 2, 5, 1};
+        T output[] = {0, 0, 0};
+        std::partial_sort_copy(Iter(input), Iter(input + 5), OutIter(output), OutIter(output + 3));
+        assert(output[0] == 1);
+        assert(output[1] == 2);
+        assert(output[2] == 3);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    int i = 42;
+    int j = 75;
+    std::partial_sort_copy(&i, &i, &j, &j);  // no-op
+    assert(i == 42);
+    assert(j == 75);
+
+    test<int, random_access_iterator<int*>, random_access_iterator<int*> >();
+    test<int, random_access_iterator<int*>, int*>();
+    test<int, int*, random_access_iterator<int*> >();
+    test<int, int*, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<int*>, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, random_access_iterator<int*>, MoveOnly*>();
+    test<MoveOnly, int*, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, int*, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>, random_access_iterator<int*>>());
+    static_assert(test<int, int*, random_access_iterator<int*>>());
+    static_assert(test<int, random_access_iterator<int*>, int*>());
+    static_assert(test<int, int*, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<int*>, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, random_access_iterator<int*>, MoveOnly*>());
+    static_assert(test<MoveOnly, int*, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, int*, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/partial_sort_copy_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/partial_sort_copy_comp.pass.cpp
new file mode 100644
index 0000000..e191c9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/partial_sort_copy_comp.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<InputIterator InIter, RandomAccessIterator RAIter, class Compare>
+//   requires ShuffleIterator<RAIter>
+//         && OutputIterator<RAIter, InIter::reference>
+//         && Predicate<Compare, InIter::value_type, RAIter::value_type>
+//         && StrictWeakOrder<Compare, RAIter::value_type>}
+//         && CopyConstructible<Compare>
+//   constexpr RAIter  // constexpr in C++20
+//   partial_sort_copy(InIter first, InIter last,
+//                     RAIter result_first, RAIter result_last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter, class OutIter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {};
+    for (int n = 0; n < 15; ++n) {
+        for (int m = 0; m < 15; ++m) {
+            OutIter it = std::partial_sort_copy(Iter(orig), Iter(orig+n), OutIter(work), OutIter(work+m), std::greater<T>());
+            if (n <= m) {
+                assert(it == OutIter(work+n));
+                assert(std::is_permutation(OutIter(work), it, orig));
+            } else {
+                assert(it == OutIter(work+m));
+            }
+            assert(std::is_sorted(OutIter(work), it, std::greater<T>()));
+            if (it != OutIter(work)) {
+                // At most m-1 elements in the input are greater than the biggest element in the result.
+                int count = 0;
+                for (int i = m; i < n; ++i) {
+                    count += (T(orig[i]) > *(it - 1));
+                }
+                assert(count < m);
+            }
+        }
+    }
+
+    {
+        int input[] = {3, 4, 2, 5, 1};
+        T output[] = {0, 0, 0};
+        std::partial_sort_copy(Iter(input), Iter(input + 5), OutIter(output), OutIter(output + 3), std::greater<T>());
+        assert(output[0] == 5);
+        assert(output[1] == 4);
+        assert(output[2] == 3);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    int i = 42;
+    int j = 75;
+    std::partial_sort_copy(&i, &i, &j, &j, std::greater<int>());  // no-op
+    assert(i == 42);
+    assert(j == 75);
+
+    test<int, random_access_iterator<int*>, random_access_iterator<int*> >();
+    test<int, random_access_iterator<int*>, int*>();
+    test<int, int*, random_access_iterator<int*> >();
+    test<int, int*, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<int*>, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, random_access_iterator<int*>, MoveOnly*>();
+    test<MoveOnly, int*, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, int*, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>, random_access_iterator<int*>>());
+    static_assert(test<int, int*, random_access_iterator<int*>>());
+    static_assert(test<int, random_access_iterator<int*>, int*>());
+    static_assert(test<int, int*, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<int*>, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, random_access_iterator<int*>, MoveOnly*>());
+    static_assert(test<MoveOnly, int*, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, int*, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/ranges_partial_sort_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/ranges_partial_sort_copy.pass.cpp
new file mode 100644
index 0000000..7a4ebd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort.copy/ranges_partial_sort_copy.pass.cpp
@@ -0,0 +1,303 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<input_iterator I1, sentinel_for<I1> S1,
+//          random_access_iterator I2, sentinel_for<I2> S2,
+//          class Comp = ranges::less, class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_copyable<I1, I2> && sortable<I2, Comp, Proj2> &&
+//            indirect_strict_weak_order<Comp, projected<I1, Proj1>, projected<I2, Proj2>>
+//   constexpr partial_sort_copy_result<I1, I2>
+//     partial_sort_copy(I1 first, S1 last, I2 result_first, S2 result_last,
+//                       Comp comp = {}, Proj1 proj1 = {}, Proj2 proj2 = {});               // Since C++20
+//
+// template<input_range R1, random_access_range R2, class Comp = ranges::less,
+//          class Proj1 = identity, class Proj2 = identity>
+//   requires indirectly_copyable<iterator_t<R1>, iterator_t<R2>> &&
+//            sortable<iterator_t<R2>, Comp, Proj2> &&
+//            indirect_strict_weak_order<Comp, projected<iterator_t<R1>, Proj1>,
+//                                       projected<iterator_t<R2>, Proj2>>
+//   constexpr partial_sort_copy_result<borrowed_iterator_t<R1>, borrowed_iterator_t<R2>>
+//     partial_sort_copy(R1&& r, R2&& result_r, Comp comp = {},
+//                       Proj1 proj1 = {}, Proj2 proj2 = {});                               // Since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "almost_satisfies_types.h"
+#include "test_iterators.h"
+
+// Test constraints of the (iterator, sentinel) overload.
+// ======================================================
+
+template <class Iter1 = int*, class Sent1 = int*, class Iter2 = int*, class Sent2 = int*,
+          class Comp = std::ranges::less>
+concept HasPartialSortCopyIter =
+    requires(Iter1&& first1, Sent1&& last1, Iter2&& first2, Sent2&& last2, Comp&& comp) {
+      std::ranges::partial_sort_copy(std::forward<Iter1>(first1), std::forward<Sent1>(last1),
+          std::forward<Iter2>(first2), std::forward<Sent2>(last2), std::forward<Comp>(comp));
+    };
+
+static_assert(HasPartialSortCopyIter<int*, int*, int*, int*, std::ranges::less>);
+
+// !input_iterator<I1>
+static_assert(!HasPartialSortCopyIter<InputIteratorNotDerivedFrom>);
+static_assert(!HasPartialSortCopyIter<InputIteratorNotIndirectlyReadable>);
+static_assert(!HasPartialSortCopyIter<InputIteratorNotInputOrOutputIterator>);
+
+// !sentinel_for<S1, I1>
+static_assert(!HasPartialSortCopyIter<int*, SentinelForNotSemiregular>);
+static_assert(!HasPartialSortCopyIter<int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !random_access_iterator<I2>
+static_assert(!HasPartialSortCopyIter<int*, int*, RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasPartialSortCopyIter<int*, int*, RandomAccessIteratorBadIndex>);
+
+// !sentinel_for<S2, I2>
+static_assert(!HasPartialSortCopyIter<int*, int*, int*, SentinelForNotSemiregular>);
+static_assert(!HasPartialSortCopyIter<int*, int*, int*, SentinelForNotWeaklyEqualityComparableWith>);
+
+// !indirect_unary_predicate<projected<I, Proj>>
+static_assert(!HasPartialSortCopyIter<int*, int*, int*, int*, IndirectUnaryPredicateNotPredicate>);
+static_assert(!HasPartialSortCopyIter<int*, int*, int*, int*, IndirectUnaryPredicateNotCopyConstructible>);
+
+// !indirectly_copyable<I1, I2>
+static_assert(!HasPartialSortCopyIter<int*, int*, MoveOnly*>);
+
+// !sortable<I2, Comp, Proj2>
+static_assert(!HasPartialSortCopyIter<int*, int*, const int*, const int*>);
+
+struct NoComparator {};
+// !indirect_strict_weak_order<Comp, projected<I1, Proj1>, projected<I2, Proj2>>
+static_assert(!HasPartialSortCopyIter<NoComparator*, NoComparator*, NoComparator*, NoComparator*>);
+
+// Test constraints of the (range) overload.
+// ======================================================
+
+template <class T>
+using R = UncheckedRange<T>;
+
+template <class Range1 = R<int*>, class Range2 = R<int*>, class Comp = std::ranges::less>
+concept HasPartialSortCopyRange =
+    requires(Range1&& range1, Range2&& range2, Comp&& comp) {
+      std::ranges::partial_sort_copy(std::forward<Range1>(range1), std::forward<Range2>(range2),
+          std::forward<Comp>(comp));
+    };
+
+static_assert(HasPartialSortCopyRange<R<int*>, R<int*>, std::ranges::less>);
+
+// !input_range<R1>
+static_assert(!HasPartialSortCopyRange<InputRangeNotDerivedFrom>);
+static_assert(!HasPartialSortCopyRange<InputRangeNotIndirectlyReadable>);
+static_assert(!HasPartialSortCopyRange<InputRangeNotInputOrOutputIterator>);
+
+// !random_access_range<R2>
+static_assert(!HasPartialSortCopyRange<R<int*>, RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasPartialSortCopyRange<R<int*>, RandomAccessRangeBadIndex>);
+
+// !indirectly_copyable<iterator_t<R1>, iterator_t<R2>>
+static_assert(!HasPartialSortCopyRange<R<int*>, R<MoveOnly*>>);
+
+// !sortable<iterator_t<R2>, Comp, Proj2>
+static_assert(!HasPartialSortCopyRange<R<int*>, R<const int*>>);
+
+// !indirect_strict_weak_order<Comp, projected<iterator_t<R1>, Proj1>, projected<iterator_t<R2>, Proj2>>
+static_assert(!HasPartialSortCopyRange<R<NoComparator*>, R<NoComparator*>>);
+
+static_assert(std::is_same_v<std::ranges::partial_sort_copy_result<int, int>, std::ranges::in_out_result<int, int>>);
+
+template <class Iter, class Sent, class OutIter, class OutSent, size_t N>
+constexpr void test_one(
+    std::array<int, N> input, size_t input_size, size_t output_size, std::array<int, N> sorted) {
+  assert(input_size <= N);
+  assert(output_size <= N + 1); // To support testing the case where output size exceeds input size.
+
+  using ResultT = std::ranges::partial_sort_copy_result<Iter, OutIter>;
+  // To support testing the case where output size exceeds input size; also makes sure calling `out.data() + int()` is
+  // valid.
+  constexpr size_t OutputSize = N + 1;
+  size_t result_size = std::ranges::min(input_size, output_size);
+
+  auto begin = input.data();
+  auto end = input.data() + input_size;
+
+  { // (iterator, sentinel) overload.
+    std::array<int, OutputSize> out;
+    auto out_begin = out.data();
+    auto out_end = out.data() + output_size;
+
+    std::same_as<ResultT> decltype(auto) result = std::ranges::partial_sort_copy(
+        Iter(begin), Sent(Iter(end)), OutIter(out_begin), OutSent(OutIter(out_end)));
+
+    assert(base(result.in) == input.data() + input_size);
+    assert(base(result.out) == out.data() + result_size);
+
+    assert(std::ranges::equal(std::ranges::subrange(out.begin(), out.begin() + result_size),
+           std::ranges::subrange(sorted.begin(), sorted.begin() + result_size)));
+  }
+
+  { // (range) overload.
+    std::array<int, OutputSize> out;
+    auto out_begin = out.data();
+    auto out_end = out.data() + output_size;
+    auto in_range = std::ranges::subrange(Iter(begin), Sent(Iter(end)));
+    auto out_range = std::ranges::subrange(OutIter(out_begin), OutSent(OutIter(out_end)));
+
+    std::same_as<ResultT> decltype(auto) result = std::ranges::partial_sort_copy(in_range, out_range);
+
+    assert(base(result.in) == input.data() + input_size);
+    assert(base(result.out) == out.data() + result_size);
+
+    assert(std::ranges::equal(std::ranges::subrange(out.begin(), out.begin() + result_size),
+           std::ranges::subrange(sorted.begin(), sorted.begin() + result_size)));
+  }
+
+}
+
+template <class Iter, class Sent, class OutIter, class OutSent, size_t N>
+constexpr void test_all_subsequences(const std::array<int, N> input) {
+  auto sorted = input;
+  std::sort(sorted.begin(), sorted.end());
+
+  // Whole input, increasing output size. Also check the case when `output_size` exceeds input size.
+  for (size_t out_size = 0; out_size <= N + 1; ++out_size) {
+    test_one<Iter, Sent, OutIter, OutSent>(input, N, out_size, sorted);
+  }
+}
+
+template <class InIter, class Sent1, class OutIter, class Sent2>
+constexpr void test_iterators_in_sent1_out_sent2() {
+  // Empty sequence.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2, 0>({});
+
+  // 1-element sequence.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{1});
+
+  // 2-element sequence.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{2, 1});
+
+  // 3-element sequence.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{2, 1, 3});
+
+  // Longer sequence.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{2, 1, 3, 6, 8, 4, 11, 5});
+
+  // Longer sequence with duplicates.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{2, 1, 3, 6, 2, 8, 6});
+
+  // All elements are the same.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{1, 1, 1});
+
+  // Already sorted.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{1, 2, 3, 4, 5});
+
+  // Descending.
+  test_all_subsequences<InIter, Sent1, OutIter, Sent2>(std::array{5, 4, 3, 2, 1});
+}
+
+template <class InIter, class Sent1, class OutIter>
+constexpr void test_iterators_in_sent1_out() {
+  test_iterators_in_sent1_out_sent2<InIter, Sent1, OutIter, OutIter>();
+  test_iterators_in_sent1_out_sent2<InIter, Sent1, OutIter, sentinel_wrapper<OutIter>>();
+}
+
+template <class InIter, class Sent1>
+constexpr void test_iterators_in_sent1() {
+  test_iterators_in_sent1_out<InIter, Sent1, random_access_iterator<int*>>();
+}
+
+template <class InIter>
+constexpr void test_iterators_in() {
+  if constexpr (std::sentinel_for<InIter, InIter>) {
+    test_iterators_in_sent1<InIter, InIter>();
+  }
+  test_iterators_in_sent1<InIter, sentinel_wrapper<InIter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_in<cpp20_input_iterator<int*>>();
+  // Omitting other iterator types to reduce the combinatorial explosion.
+  test_iterators_in<random_access_iterator<int*>>();
+  test_iterators_in<const int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array in = {1, 2, 3, 4, 5};
+    std::ranges::greater comp;
+
+    {
+      std::array<int, 2> out;
+
+      auto result = std::ranges::partial_sort_copy(in.begin(), in.end(), out.begin(), out.end(), comp);
+      assert(std::ranges::equal(std::ranges::subrange(out.begin(), result.out), std::array{5, 4}));
+    }
+
+    {
+      std::array<int, 2> out;
+
+      auto result = std::ranges::partial_sort_copy(in, out, comp);
+      assert(std::ranges::equal(std::ranges::subrange(out.begin(), result.out), std::array{5, 4}));
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+
+      constexpr A() = default;
+      constexpr A(int value) : a(value) {}
+      constexpr auto operator<=>(const A&) const = default;
+    };
+
+    const std::array in = {2, 1, 3};
+    auto proj1 = [](int value) { return value * -1; };
+    auto proj2 = [](A value) { return value.a * -1; };
+    // The projections negate the argument, so the array will appear to be sorted in descending order: [3, 2, 1]
+    // (the projections make it appear to the algorithm as [-3, -2, -1]).
+
+    {
+      std::array<A, 2> out;
+
+      // No projections: ascending order.
+      auto result = std::ranges::partial_sort_copy(in.begin(), in.end(), out.begin(), out.end(), {});
+      assert(std::ranges::equal(std::ranges::subrange(out.begin(), result.out), std::array{1, 2}));
+      // Using projections: descending order.
+      result = std::ranges::partial_sort_copy(in.begin(), in.end(), out.begin(), out.end(), {}, proj1, proj2);
+      assert(std::ranges::equal(std::ranges::subrange(out.begin(), result.out), std::array{3, 2}));
+    }
+
+    {
+      std::array<int, 2> out;
+
+      auto result = std::ranges::partial_sort_copy(in, out, {});
+      assert(std::ranges::equal(std::ranges::subrange(out.begin(), result.out), std::array{1, 2}));
+      result = std::ranges::partial_sort_copy(in, out, {}, proj1, proj2);
+      assert(std::ranges::equal(std::ranges::subrange(out.begin(), result.out), std::array{3, 2}));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/partial_sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/partial_sort.pass.cpp
new file mode 100644
index 0000000..a5a21d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/partial_sort.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter> && LessThanComparable<Iter::value_type>
+//   constexpr void  // constexpr in C++20
+//   partial_sort(Iter first, Iter middle, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        for (int m = 0; m <= n; ++m) {
+            std::partial_sort(Iter(work), Iter(work+m), Iter(work+n));
+            assert(std::is_sorted(work, work+m));
+            assert(std::is_permutation(work, work+n, orig));
+            // No element in the unsorted portion is less than any element in the sorted portion.
+            for (int i = m; i < n; ++i) {
+                assert(m == 0 || !(work[i] < work[m-1]));
+            }
+            std::copy(orig, orig+15, work);
+        }
+    }
+
+    {
+        T input[] = {3, 4, 2, 5, 1};
+        std::partial_sort(Iter(input), Iter(input + 3), Iter(input + 5));
+        assert(input[0] == 1);
+        assert(input[1] == 2);
+        assert(input[2] == 3);
+        assert(input[3] + input[4] == 4 + 5);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    int i = 42;
+    std::partial_sort(&i, &i, &i);  // no-op
+    assert(i == 42);
+
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/partial_sort_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/partial_sort_comp.pass.cpp
new file mode 100644
index 0000000..21b5ac7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/partial_sort_comp.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   constexpr void  // constexpr in C++20
+//   partial_sort(Iter first, Iter middle, Iter last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+template<class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    T work[15] = {3,1,4,1,5, 9,2,6,5,3, 5,8,9,7,9};
+    for (int n = 0; n < 15; ++n) {
+        for (int m = 0; m <= n; ++m) {
+            std::partial_sort(Iter(work), Iter(work+m), Iter(work+n), std::greater<T>());
+            assert(std::is_sorted(work, work+m, std::greater<T>()));
+            assert(std::is_permutation(work, work+n, orig));
+            // No element in the unsorted portion is greater than any element in the sorted portion.
+            for (int i = m; i < n; ++i) {
+                assert(m == 0 || !(work[i] > work[m-1]));
+            }
+            std::copy(orig, orig+15, work);
+        }
+    }
+
+    {
+        T input[] = {3, 4, 2, 5, 1};
+        std::partial_sort(Iter(input), Iter(input + 3), Iter(input + 5), std::greater<T>());
+        assert(input[0] == 5);
+        assert(input[1] == 4);
+        assert(input[2] == 3);
+        assert(input[3] + input[4] == 1 + 2);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    int i = 42;
+    std::partial_sort(&i, &i, &i, std::greater<int>());  // no-op
+    assert(i == 42);
+
+    test<int, random_access_iterator<int*> >();
+    test<int, int*>();
+
+#if TEST_STD_VER >= 11
+    test<MoveOnly, random_access_iterator<MoveOnly*>>();
+    test<MoveOnly, MoveOnly*>();
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test<int, random_access_iterator<int*>>());
+    static_assert(test<int, int*>());
+    static_assert(test<MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<MoveOnly, MoveOnly*>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/ranges_partial_sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/ranges_partial_sort.pass.cpp
new file mode 100644
index 0000000..e70828f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/partial.sort/ranges_partial_sort.pass.cpp
@@ -0,0 +1,212 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//           class Proj = identity>
+//    requires sortable<I, Comp, Proj>
+//    constexpr I
+//      ranges::partial_sort(I first, I middle, S last, Comp comp = {}, Proj proj = {});      // since C++20
+//
+//  template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//    requires sortable<iterator_t<R>, Comp, Proj>
+//    constexpr borrowed_iterator_t<R>
+//      ranges::partial_sort(R&& r, iterator_t<R> middle, Comp comp = {}, Proj proj = {});    // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasPartialSortIt = requires(Iter first, Iter mid, Sent last, Comp comp) {
+  std::ranges::partial_sort(first, mid, last, comp);
+};
+
+static_assert(HasPartialSortIt<int*>);
+static_assert(!HasPartialSortIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasPartialSortIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasPartialSortIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasPartialSortIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasPartialSortIt<int*, int*, BadComparator>);
+static_assert(!HasPartialSortIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasPartialSortR = requires(Range range, std::ranges::iterator_t<Range> mid, Comp comp) {
+  std::ranges::partial_sort(range, mid, comp);
+};
+
+static_assert(HasPartialSortR<UncheckedRange<int*>>);
+static_assert(!HasPartialSortR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasPartialSortR<RandomAccessRangeBadIndex>);
+static_assert(!HasPartialSortR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasPartialSortR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasPartialSortR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasPartialSortR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(std::array<int, N> input, size_t mid_index, std::array<int, N> sorted) {
+  { // (iterator, sentinel) overload.
+    auto partially_sorted = input;
+    auto begin = Iter(partially_sorted.data());
+    auto mid = begin + mid_index;
+    auto end = Sent(Iter(partially_sorted.data() + partially_sorted.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::partial_sort(begin, mid, end);
+    assert(std::equal(partially_sorted.begin(), partially_sorted.begin() + mid_index,
+                      sorted.begin(), sorted.begin() + mid_index));
+    assert(base(last) == partially_sorted.data() + partially_sorted.size());
+  }
+
+  { // (range) overload.
+    auto partially_sorted = input;
+    auto begin = Iter(partially_sorted.data());
+    auto mid = begin + mid_index;
+    auto end = Sent(Iter(partially_sorted.data() + partially_sorted.size()));
+    auto range = std::ranges::subrange(begin, end);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::partial_sort(range, mid);
+    assert(std::ranges::equal(begin, begin + mid_index, sorted.begin(), sorted.begin() + mid_index));
+    assert(base(last) == partially_sorted.data() + partially_sorted.size());
+  }
+}
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_all_subsequences(std::array<int, N> input) {
+  auto sorted = input;
+  std::sort(sorted.begin(), sorted.end());
+
+  for (size_t n = 0; n <= N; ++n) {
+    test_one<Iter, Sent, N>(input, n, sorted);
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterator_and_sentinel() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, 0, {});
+
+  // 1-element sequence.
+  test_all_subsequences<Iter, Sent>(std::array{1});
+
+  // 2-element sequence.
+  test_all_subsequences<Iter, Sent>(std::array{2, 1});
+
+  // 3-element sequence.
+  test_all_subsequences<Iter, Sent>(std::array{2, 1, 3});
+
+  // Longer sequence.
+  test_all_subsequences<Iter, Sent>(std::array{2, 1, 3, 6, 8, 4, 11, 5});
+
+  // Longer sequence with duplicates.
+  test_all_subsequences<Iter, Sent>(std::array{2, 1, 3, 6, 2, 8, 6});
+
+  // All elements are the same.
+  test_all_subsequences<Iter, Sent>(std::array{1, 1, 1});
+
+  // Already sorted.
+  test_all_subsequences<Iter, Sent>(std::array{1, 2, 3, 4, 5});
+
+  // Descending.
+  test_all_subsequences<Iter, Sent>(std::array{5, 4, 3, 2, 1});
+
+  // Repeating pattern.
+  test_all_subsequences<Iter, Sent>(std::array{1, 2, 1, 2, 1, 2});
+}
+
+constexpr void test_iterators() {
+  test_iterator_and_sentinel<random_access_iterator<int*>, random_access_iterator<int*>>();
+  test_iterator_and_sentinel<random_access_iterator<int*>, sentinel_wrapper<random_access_iterator<int*>>>();
+  test_iterator_and_sentinel<contiguous_iterator<int*>, contiguous_iterator<int*>>();
+  test_iterator_and_sentinel<contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>>();
+  test_iterator_and_sentinel<int*, int*>();
+  test_iterator_and_sentinel<int*, sentinel_wrapper<int*>>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    const std::array orig_in = {1, 2, 3, 4, 5};
+
+    {
+      auto in = orig_in;
+      auto b = in.begin();
+      auto m = b + 2;
+
+      auto last = std::ranges::partial_sort(b, m, in.end(), std::ranges::greater{});
+      assert(std::ranges::equal(std::ranges::subrange(b, m), std::array{5, 4}));
+      assert(last == in.end());
+    }
+
+    {
+      auto in = orig_in;
+      auto b = in.begin();
+      auto m = b + 2;
+
+      auto last = std::ranges::partial_sort(in, m, std::ranges::greater{});
+      assert(std::ranges::equal(std::ranges::subrange(b, m), std::array{5, 4}));
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr bool operator==(const A&) const = default;
+    };
+
+    const std::array orig_in = {A{2}, A{3}, A{1}};
+
+    {
+      auto in = orig_in;
+      auto b = in.begin();
+      auto m = b + 2;
+
+      auto last = std::ranges::partial_sort(b, m, in.end(), {}, &A::a);
+      assert(std::ranges::equal(
+          std::ranges::subrange(b, m), std::array{A{1}, A{2}}
+      ));
+      assert(last == in.end());
+    }
+
+    {
+      auto in = orig_in;
+      auto b = in.begin();
+      auto m = b + 2;
+
+      auto last = std::ranges::partial_sort(in, m, {}, &A::a);
+      assert(std::ranges::equal(
+          std::ranges::subrange(b, m), std::array{A{1}, A{2}}
+      ));
+      assert(last == in.end());
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/ranges.sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/ranges.sort.pass.cpp
new file mode 100644
index 0000000..96f4c1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/ranges.sort.pass.cpp
@@ -0,0 +1,235 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//           class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   constexpr I
+//     sort(I first, S last, Comp comp = {}, Proj proj = {});                                // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   constexpr borrowed_iterator_t<R>
+//     sort(R&& r, Comp comp = {}, Proj proj = {});                                          // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasSortIt = requires(Iter first, Sent last, Comp comp) { std::ranges::sort(first, last, comp); };
+
+static_assert(HasSortIt<int*>);
+static_assert(!HasSortIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasSortIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasSortIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasSortIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasSortIt<int*, int*, BadComparator>);
+static_assert(!HasSortIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasSortR = requires(Range range, Comp comp) { std::ranges::sort(range, comp); };
+
+static_assert(HasSortR<UncheckedRange<int*>>);
+static_assert(!HasSortR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasSortR<RandomAccessRangeBadIndex>);
+static_assert(!HasSortR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasSortR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasSortR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasSortR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <class Iter, class Sent, size_t N>
+constexpr void test_one(std::array<int, N> input, std::array<int, N> expected) {
+  { // (iterator, sentinel) overload.
+    auto sorted = input;
+    auto b = Iter(sorted.data());
+    auto e = Sent(Iter(sorted.data() + sorted.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::sort(b, e);
+    assert(sorted == expected);
+    assert(base(last) == sorted.data() + sorted.size());
+  }
+
+  { // (range) overload.
+    auto sorted = input;
+    auto b = Iter(sorted.data());
+    auto e = Sent(Iter(sorted.data() + sorted.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::sort(range);
+    assert(sorted == expected);
+    assert(base(last) == sorted.data() + sorted.size());
+  }
+}
+
+template <class Iter, class Sent>
+constexpr void test_iterators_2() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, {});
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, {1});
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, {1, 2});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, {1, 2, 3});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 8, 4, 11, 5}, {1, 2, 3, 4, 5, 6, 8, 11});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 7>({2, 1, 3, 6, 2, 8, 6}, {1, 2, 2, 3, 6, 6, 8});
+  // All elements are the same.
+  test_one<Iter, Sent, 3>({1, 1, 1}, {1, 1, 1});
+  // Already sorted.
+  test_one<Iter, Sent, 5>({1, 2, 3, 4, 5}, {1, 2, 3, 4, 5});
+  // Reverse-sorted.
+  test_one<Iter, Sent, 5>({5, 4, 3, 2, 1}, {1, 2, 3, 4, 5});
+  // Repeating pattern.
+  test_one<Iter, Sent, 6>({1, 2, 1, 2, 1, 2}, {1, 1, 1, 2, 2, 2});
+}
+
+template <class Iter>
+constexpr void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+constexpr void test_iterators() {
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+constexpr bool test() {
+  test_iterators();
+
+  { // A custom comparator works.
+    {
+      std::array in = {1, 2, 3, 4, 5};
+      auto last = std::ranges::sort(in.begin(), in.end(), std::ranges::greater{});
+      assert((in == std::array{5, 4, 3, 2, 1}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {1, 2, 3, 4, 5};
+      auto last = std::ranges::sort(in, std::ranges::greater{});
+      assert((in == std::array{5, 4, 3, 2, 1}));
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      constexpr bool operator==(const A&) const = default;
+    };
+
+    {
+      std::array in = {A{2}, A{3}, A{1}};
+      auto last = std::ranges::sort(in.begin(), in.end(), {}, &A::a);
+      assert((in == std::array{A{1}, A{2}, A{3}}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {A{2}, A{3}, A{1}};
+      auto last = std::ranges::sort(in, {}, &A::a);
+      assert((in == std::array{A{1}, A{2}, A{3}}));
+      assert(last == in.end());
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct S {
+      int i;
+      constexpr S(int i_) : i(i_) {}
+
+      constexpr bool comparator(const S& rhs) const { return i < rhs.i; }
+      constexpr const S& projection() const { return *this; }
+
+      constexpr bool operator==(const S&) const = default;
+    };
+
+    {
+      std::array in = {S{2}, S{3}, S{1}};
+      auto last = std::ranges::sort(in.begin(), in.end(), &S::comparator, &S::projection);
+      assert((in == std::array{S{1}, S{2}, S{3}}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {S{2}, S{3}, S{1}};
+      auto last = std::ranges::sort(in, &S::comparator, &S::projection);
+      assert((in == std::array{S{1}, S{2}, S{3}}));
+      assert(last == in.end());
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    {
+      std::array in = {2, 1, 3};
+      auto last = std::ranges::sort(in.begin(), in.end(), [](int i, int j) { return BooleanTestable{i < j}; });
+      assert((in == std::array{1, 2, 3}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {2, 1, 3};
+      auto last = std::ranges::sort(in, [](int i, int j) { return BooleanTestable{i < j}; });
+      assert((in == std::array{1, 2, 3}));
+      assert(last == in.end());
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result = std::ranges::sort(std::array{1, 2, 3});
+  }
+
+  // TODO: Enable the tests once the implementation switched to use iter_move/iter_swap
+  /*
+  { // ProxyIterator
+    {
+      std::array in = {2, 1, 3};
+      ProxyRange proxy{in};
+
+      std::ranges::sort(proxy.begin(), proxy.end(), [](auto i, auto j) { return i.data < j.data; });
+      assert((in == std::array{1, 2, 3}));
+    }
+
+    {
+      std::array in = {2, 1, 3};
+      ProxyRange proxy{in};
+      std::ranges::sort(proxy, [](auto i, auto j) { return i.data < j.data; });
+      assert((in == std::array{1, 2, 3}));
+    }
+  }
+  */
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp
new file mode 100644
index 0000000..ed26c5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort.pass.cpp
@@ -0,0 +1,287 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter>
+//         && LessThanComparable<Iter::value_type>
+//   void
+//   sort(Iter first, Iter last);
+
+#include <algorithm>
+#include <iterator>
+#include <numeric>
+#include <random>
+#include <cassert>
+#include <vector>
+#include <deque>
+#include <utility>
+
+#include "test_macros.h"
+
+std::mt19937 randomness;
+
+template <class Container, class RI>
+void
+test_sort_helper(RI f, RI l)
+{
+    if (f != l)
+    {
+        Container save(l - f);
+        do
+        {
+            std::copy(f, l, save.begin());
+            std::sort(save.begin(), save.end());
+            assert(std::is_sorted(save.begin(), save.end()));
+            assert(std::is_permutation(save.begin(), save.end(), f));
+        } while (std::next_permutation(f, l));
+    }
+}
+
+template <class T>
+void set_value(T& dest, int value)
+{
+    dest = value;
+}
+
+inline void set_value(std::pair<int, int>& dest, int value)
+{
+    dest.first = value;
+    dest.second = value;
+}
+
+template <class Container, class RI>
+void
+test_sort_driver_driver(RI f, RI l, int start, RI real_last)
+{
+    for (RI i = l; i > f + start;)
+    {
+        set_value(*--i, start);
+        if (f == i)
+        {
+            test_sort_helper<Container>(f, real_last);
+        }
+        if (start > 0)
+            test_sort_driver_driver<Container>(f, i, start-1, real_last);
+    }
+}
+
+template <class Container, class RI>
+void
+test_sort_driver(RI f, RI l, int start)
+{
+    test_sort_driver_driver<Container>(f, l, start, l);
+}
+
+template <class Container, int sa>
+void
+test_sort_()
+{
+    Container ia(sa);
+    for (int i = 0; i < sa; ++i)
+    {
+        test_sort_driver<Container>(ia.begin(), ia.end(), i);
+    }
+}
+
+template <class T>
+T increment_or_reset(T value, int max_value)
+{
+    return value == max_value - 1 ? 0 : value + 1;
+}
+
+inline std::pair<int, int> increment_or_reset(std::pair<int, int> value,
+                                              int max_value)
+{
+    int new_value = value.first + 1;
+    if (new_value == max_value)
+    {
+        new_value = 0;
+    }
+    return std::make_pair(new_value, new_value);
+}
+
+template <class Container>
+void
+test_larger_sorts(int N, int M)
+{
+    using Iter = typename Container::iterator;
+    using ValueType = typename Container::value_type;
+    assert(N != 0);
+    assert(M != 0);
+    // create container of length N filled with M different objects
+    Container array(N);
+    ValueType x = ValueType();
+    for (int i = 0; i < N; ++i)
+    {
+        array[i] = x;
+        x = increment_or_reset(x, M);
+    }
+    Container original = array;
+    Iter iter = array.begin();
+    Iter original_iter = original.begin();
+
+    // test saw tooth pattern
+    std::sort(iter, iter+N);
+    assert(std::is_sorted(iter, iter+N));
+    assert(std::is_permutation(iter, iter+N, original_iter));
+    // test random pattern
+    std::shuffle(iter, iter+N, randomness);
+    std::sort(iter, iter+N);
+    assert(std::is_sorted(iter, iter+N));
+    assert(std::is_permutation(iter, iter+N, original_iter));
+    // test sorted pattern
+    std::sort(iter, iter+N);
+    assert(std::is_sorted(iter, iter+N));
+    assert(std::is_permutation(iter, iter+N, original_iter));
+    // test reverse sorted pattern
+    std::reverse(iter, iter+N);
+    std::sort(iter, iter+N);
+    assert(std::is_sorted(iter, iter+N));
+    assert(std::is_permutation(iter, iter+N, original_iter));
+    // test swap ranges 2 pattern
+    std::swap_ranges(iter, iter+N/2, iter+N/2);
+    std::sort(iter, iter+N);
+    assert(std::is_sorted(iter, iter+N));
+    assert(std::is_permutation(iter, iter+N, original_iter));
+    // test reverse swap ranges 2 pattern
+    std::reverse(iter, iter+N);
+    std::swap_ranges(iter, iter+N/2, iter+N/2);
+    std::sort(iter, iter+N);
+    assert(std::is_sorted(iter, iter+N));
+    assert(std::is_permutation(iter, iter+N, original_iter));
+}
+
+template <class Container>
+void
+test_larger_sorts(int N)
+{
+    test_larger_sorts<Container>(N, 1);
+    test_larger_sorts<Container>(N, 2);
+    test_larger_sorts<Container>(N, 3);
+    test_larger_sorts<Container>(N, N/2-1);
+    test_larger_sorts<Container>(N, N/2);
+    test_larger_sorts<Container>(N, N/2+1);
+    test_larger_sorts<Container>(N, N-2);
+    test_larger_sorts<Container>(N, N-1);
+    test_larger_sorts<Container>(N, N);
+}
+
+void
+test_pointer_sort()
+{
+    static const int array_size = 10;
+    const int v[array_size] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+    const int *pv[array_size];
+    for (int i = 0; i < array_size; i++) {
+      pv[i] = &v[array_size - 1 - i];
+    }
+    std::sort(pv, pv + array_size);
+    assert(*pv[0] == v[0]);
+    assert(*pv[1] == v[1]);
+    assert(*pv[array_size - 1] == v[array_size - 1]);
+}
+
+// test_adversarial_quicksort generates a vector with values arranged in such a
+// way that they would invoke O(N^2) behavior on any quick sort implementation
+// that satisifies certain conditions.  Details are available in the following
+// paper:
+// "A Killer Adversary for Quicksort", M. D. McIlroy, Software-Practice &
+// Experience Volume 29 Issue 4 April 10, 1999 pp 341-344.
+// https://dl.acm.org/doi/10.5555/311868.311871.
+struct AdversaryComparator {
+  AdversaryComparator(int N, std::vector<int>& input) : gas(N - 1), V(input) {
+    V.resize(N);
+    // Populate all positions in the generated input to gas to indicate that
+    // none of the values have been fixed yet.
+    for (int i = 0; i < N; ++i)
+      V[i] = gas;
+  }
+
+  bool operator()(int x, int y) {
+    if (V[x] == gas && V[y] == gas) {
+      // We are comparing two inputs whose value is still to be decided.
+      if (x == candidate) {
+        V[x] = nsolid++;
+      } else {
+        V[y] = nsolid++;
+      }
+    }
+    if (V[x] == gas) {
+      candidate = x;
+    } else if (V[y] == gas) {
+      candidate = y;
+    }
+    return V[x] < V[y];
+  }
+
+private:
+  // If an element is equal to gas, it indicates that the value of the element
+  // is still to be decided and may change over the course of time.
+  const int gas;
+  // This is a reference so that we can manipulate the input vector later.
+  std::vector<int>& V;
+  // Candidate for the pivot position.
+  int candidate = 0;
+  int nsolid = 0;
+};
+
+void test_adversarial_quicksort(int N) {
+  assert(N > 0);
+  std::vector<int> ascVals(N);
+  // Fill up with ascending values from 0 to N-1.  These will act as indices
+  // into V.
+  std::iota(ascVals.begin(), ascVals.end(), 0);
+  std::vector<int> V;
+  AdversaryComparator comp(N, V);
+  std::sort(ascVals.begin(), ascVals.end(), comp);
+  std::sort(V.begin(), V.end());
+  assert(std::is_sorted(V.begin(), V.end()));
+}
+
+template <class Container>
+void run_sort_tests()
+{
+    // test null range
+    using ValueType = typename Container::value_type;
+    ValueType d = ValueType();
+    std::sort(&d, &d);
+
+    // exhaustively test all possibilities up to length 8
+    test_sort_<Container, 1>();
+    test_sort_<Container, 2>();
+    test_sort_<Container, 3>();
+    test_sort_<Container, 4>();
+    test_sort_<Container, 5>();
+    test_sort_<Container, 6>();
+    test_sort_<Container, 7>();
+    test_sort_<Container, 8>();
+
+    test_larger_sorts<Container>(256);
+    test_larger_sorts<Container>(257);
+    test_larger_sorts<Container>(499);
+    test_larger_sorts<Container>(500);
+    test_larger_sorts<Container>(997);
+    test_larger_sorts<Container>(1000);
+    test_larger_sorts<Container>(1009);
+}
+
+int main(int, char**)
+{
+    // test various combinations of contiguous/non-contiguous containers with
+    // arithmetic/non-arithmetic types
+    run_sort_tests<std::vector<int> >();
+    run_sort_tests<std::deque<int> >();
+    run_sort_tests<std::vector<std::pair<int, int> > >();
+
+    test_pointer_sort();
+    test_adversarial_quicksort(1 << 20);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_comp.pass.cpp
new file mode 100644
index 0000000..832d190
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_comp.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   void
+//   sort(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+#include <memory>
+
+#include "test_macros.h"
+
+struct indirect_less
+{
+    template <class P>
+    bool operator()(const P& x, const P& y)
+        {return *x < *y;}
+};
+
+int main(int, char**)
+{
+    {
+    std::vector<int> v(1000);
+    for (int i = 0; static_cast<std::size_t>(i) < v.size(); ++i)
+        v[i] = i;
+    std::sort(v.begin(), v.end(), std::greater<int>());
+    std::reverse(v.begin(), v.end());
+    assert(std::is_sorted(v.begin(), v.end()));
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    std::vector<std::unique_ptr<int> > v(1000);
+    for (int i = 0; static_cast<std::size_t>(i) < v.size(); ++i)
+        v[i].reset(new int(i));
+    std::sort(v.begin(), v.end(), indirect_less());
+    assert(std::is_sorted(v.begin(), v.end(), indirect_less()));
+    assert(*v[0] == 0);
+    assert(*v[1] == 1);
+    assert(*v[2] == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_constexpr.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_constexpr.pass.cpp
new file mode 100644
index 0000000..afe199d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_constexpr.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter>
+//         && LessThanComparable<Iter::value_type>
+//   void
+//   sort(Iter first, Iter last);
+
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+const int LargeN = 128;
+
+template<int N, class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[N] = {};
+    unsigned x = 1;
+    for (int i=0; i < N; ++i) {
+        x = (x * 1664525) + 1013904223;
+        orig[i] = x % 1000;
+    }
+    T work[N] = {};
+    std::copy(orig, orig+N, work);
+    std::sort(Iter(work), Iter(work+N));
+    assert(std::is_sorted(work, work+N));
+    assert(std::is_permutation(work, work+N, orig));
+
+    return true;
+}
+
+template<int N, class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test_pointers()
+{
+    T data[N] = {};
+    T *orig[N] = {};
+    unsigned x = 1;
+    for (int i=0; i < N; ++i) {
+        orig[i] = &data[x % 258];
+    }
+    T *work[N] = {};
+    std::copy(orig, orig+N, work);
+    std::sort(Iter(work), Iter(work+N));
+    assert(std::is_sorted(work, work+N));
+    assert(std::is_permutation(work, work+N, orig));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<7, int, int*>();
+    test<7, int, random_access_iterator<int*> >();
+    test<LargeN, int, int*>();
+    test<LargeN, int, random_access_iterator<int*> >();
+
+#if TEST_STD_VER >= 11
+    test<7, MoveOnly, MoveOnly*>();
+    test<7, MoveOnly, random_access_iterator<MoveOnly*> >();
+    test<LargeN, MoveOnly, MoveOnly*>();
+    test<LargeN, MoveOnly, random_access_iterator<MoveOnly*> >();
+#endif
+
+    test_pointers<17, char, char**>();
+    test_pointers<17, char, random_access_iterator<char**> >();
+    test_pointers<17, const char, const char**>();
+    test_pointers<17, const char, random_access_iterator<const char**> >();
+    test_pointers<17, int, int**>();
+    test_pointers<17, int, random_access_iterator<int**> >();
+
+#if TEST_STD_VER >= 20
+    test<7, int, contiguous_iterator<int*>>();
+    test<LargeN, int, contiguous_iterator<int*>>();
+    test<7, MoveOnly, contiguous_iterator<MoveOnly*>>();
+    test<LargeN, MoveOnly, contiguous_iterator<MoveOnly*>>();
+    test_pointers<17, char, contiguous_iterator<char**>>();
+    test_pointers<17, const char, contiguous_iterator<const char**>>();
+    test_pointers<17, int, contiguous_iterator<int**>>();
+
+    static_assert(test<7, int, int*>());
+    static_assert(test<7, int, random_access_iterator<int*>>());
+    static_assert(test<7, int, contiguous_iterator<int*>>());
+    static_assert(test<LargeN, int, int*>());
+    static_assert(test<LargeN, int, random_access_iterator<int*>>());
+    static_assert(test<LargeN, int, contiguous_iterator<int*>>());
+
+    static_assert(test<7, MoveOnly, MoveOnly*>());
+    static_assert(test<7, MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<7, MoveOnly, contiguous_iterator<MoveOnly*>>());
+    static_assert(test<LargeN, MoveOnly, MoveOnly*>());
+    static_assert(test<LargeN, MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<LargeN, MoveOnly, contiguous_iterator<MoveOnly*>>());
+
+    static_assert(test_pointers<17, char, char**>());
+    static_assert(test_pointers<17, char, random_access_iterator<char**>>());
+    static_assert(test_pointers<17, char, contiguous_iterator<char**>>());
+    static_assert(test_pointers<17, const char, const char**>());
+    static_assert(test_pointers<17, const char, random_access_iterator<const char**>>());
+    static_assert(test_pointers<17, const char, contiguous_iterator<const char**>>());
+    static_assert(test_pointers<17, int, int**>());
+    static_assert(test_pointers<17, int, random_access_iterator<int**>>());
+    static_assert(test_pointers<17, int, contiguous_iterator<int**>>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_constexpr_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_constexpr_comp.pass.cpp
new file mode 100644
index 0000000..134830f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/sort/sort_constexpr_comp.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   void
+//   sort(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+
+const int LargeN = 128;
+
+template<int N, class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    int orig[N] = {};
+    unsigned x = 1;
+    for (int i=0; i < N; ++i) {
+        x = (x * 1664525) + 1013904223;
+        orig[i] = x % 1000;
+    }
+    T work[N] = {};
+    std::copy(orig, orig+N, work);
+    std::sort(Iter(work), Iter(work+N), std::greater<T>());
+    assert(std::is_sorted(work, work+N, std::greater<T>()));
+    assert(std::is_permutation(work, work+N, orig));
+
+    return true;
+}
+
+template<int N, class T, class Iter>
+TEST_CONSTEXPR_CXX20 bool test_pointers()
+{
+    T data[N] = {};
+    T *orig[N] = {};
+    unsigned x = 1;
+    for (int i=0; i < N; ++i) {
+        orig[i] = &data[x % 258];
+    }
+    T *work[N] = {};
+    std::copy(orig, orig+N, work);
+    std::sort(Iter(work), Iter(work+N), std::greater<T*>());
+    assert(std::is_sorted(work, work+N, std::greater<T*>()));
+    assert(std::is_permutation(work, work+N, orig));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<7, int, int*>();
+    test<7, int, random_access_iterator<int*> >();
+    test<LargeN, int, int*>();
+    test<LargeN, int, random_access_iterator<int*> >();
+
+#if TEST_STD_VER >= 11
+    test<7, MoveOnly, MoveOnly*>();
+    test<7, MoveOnly, random_access_iterator<MoveOnly*> >();
+    test<LargeN, MoveOnly, MoveOnly*>();
+    test<LargeN, MoveOnly, random_access_iterator<MoveOnly*> >();
+#endif
+
+    test_pointers<17, char, char**>();
+    test_pointers<17, char, random_access_iterator<char**> >();
+    test_pointers<17, const char, const char**>();
+    test_pointers<17, const char, random_access_iterator<const char**> >();
+    test_pointers<17, int, int**>();
+    test_pointers<17, int, random_access_iterator<int**> >();
+
+#if TEST_STD_VER >= 20
+    test<7, int, contiguous_iterator<int*>>();
+    test<LargeN, int, contiguous_iterator<int*>>();
+    test<7, MoveOnly, contiguous_iterator<MoveOnly*>>();
+    test<LargeN, MoveOnly, contiguous_iterator<MoveOnly*>>();
+    test_pointers<17, char, contiguous_iterator<char**>>();
+    test_pointers<17, const char, contiguous_iterator<const char**>>();
+    test_pointers<17, int, contiguous_iterator<int**>>();
+
+    static_assert(test<7, int, int*>());
+    static_assert(test<7, int, random_access_iterator<int*>>());
+    static_assert(test<7, int, contiguous_iterator<int*>>());
+    static_assert(test<LargeN, int, int*>());
+    static_assert(test<LargeN, int, random_access_iterator<int*>>());
+    static_assert(test<LargeN, int, contiguous_iterator<int*>>());
+
+    static_assert(test<7, MoveOnly, MoveOnly*>());
+    static_assert(test<7, MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<7, MoveOnly, contiguous_iterator<MoveOnly*>>());
+    static_assert(test<LargeN, MoveOnly, MoveOnly*>());
+    static_assert(test<LargeN, MoveOnly, random_access_iterator<MoveOnly*>>());
+    static_assert(test<LargeN, MoveOnly, contiguous_iterator<MoveOnly*>>());
+
+    static_assert(test_pointers<17, char, char**>());
+    static_assert(test_pointers<17, char, random_access_iterator<char**>>());
+    static_assert(test_pointers<17, char, contiguous_iterator<char**>>());
+    static_assert(test_pointers<17, const char, const char**>());
+    static_assert(test_pointers<17, const char, random_access_iterator<const char**>>());
+    static_assert(test_pointers<17, const char, contiguous_iterator<const char**>>());
+    static_assert(test_pointers<17, int, int**>());
+    static_assert(test_pointers<17, int, random_access_iterator<int**>>());
+    static_assert(test_pointers<17, int, contiguous_iterator<int**>>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/ranges.stable.sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/ranges.stable.sort.pass.cpp
new file mode 100644
index 0000000..f83d093
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/ranges.stable.sort.pass.cpp
@@ -0,0 +1,288 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// template<random_access_iterator I, sentinel_for<I> S, class Comp = ranges::less,
+//         class Proj = identity>
+//   requires sortable<I, Comp, Proj>
+//   I ranges::stable_sort(I first, S last, Comp comp = {}, Proj proj = {});                 // since C++20
+//
+// template<random_access_range R, class Comp = ranges::less, class Proj = identity>
+//   requires sortable<iterator_t<R>, Comp, Proj>
+//   borrowed_iterator_t<R>
+//     ranges::stable_sort(R&& r, Comp comp = {}, Proj proj = {});                           // since C++20
+
+#include <algorithm>
+#include <array>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "almost_satisfies_types.h"
+#include "boolean_testable.h"
+#include "test_iterators.h"
+
+// SFINAE tests.
+
+using BadComparator = ComparatorNotCopyable<int*>;
+static_assert(!std::sortable<int*, BadComparator>);
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>, class Comp = std::ranges::less>
+concept HasStableSortIt = requires(Iter first, Sent last, Comp comp) { std::ranges::stable_sort(first, last, comp); };
+
+static_assert(HasStableSortIt<int*>);
+static_assert(!HasStableSortIt<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!HasStableSortIt<RandomAccessIteratorBadIndex>);
+static_assert(!HasStableSortIt<int*, SentinelForNotSemiregular>);
+static_assert(!HasStableSortIt<int*, SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!HasStableSortIt<int*, int*, BadComparator>);
+static_assert(!HasStableSortIt<const int*>); // Doesn't satisfy `sortable`.
+
+template <class Range, class Comp = std::ranges::less>
+concept HasStableSortR = requires(Range range, Comp comp) { std::ranges::stable_sort(range, comp); };
+
+static_assert(HasStableSortR<UncheckedRange<int*>>);
+static_assert(!HasStableSortR<RandomAccessRangeNotDerivedFrom>);
+static_assert(!HasStableSortR<RandomAccessRangeBadIndex>);
+static_assert(!HasStableSortR<UncheckedRange<int*, SentinelForNotSemiregular>>);
+static_assert(!HasStableSortR<UncheckedRange<int*, SentinelForNotWeaklyEqualityComparableWith>>);
+static_assert(!HasStableSortR<UncheckedRange<int*>, BadComparator>);
+static_assert(!HasStableSortR<UncheckedRange<const int*>>); // Doesn't satisfy `sortable`.
+
+template <class Iter, class Sent, size_t N>
+void test_one(std::array<int, N> input, std::array<int, N> expected) {
+  { // (iterator, sentinel) overload.
+    auto sorted = input;
+    auto b = Iter(sorted.data());
+    auto e = Sent(Iter(sorted.data() + sorted.size()));
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::stable_sort(b, e);
+    assert(sorted == expected);
+    assert(base(last) == sorted.data() + sorted.size());
+  }
+
+  { // (range) overload.
+    auto sorted = input;
+    auto b = Iter(sorted.data());
+    auto e = Sent(Iter(sorted.data() + sorted.size()));
+    auto range = std::ranges::subrange(b, e);
+
+    std::same_as<Iter> decltype(auto) last = std::ranges::stable_sort(range);
+    assert(sorted == expected);
+    assert(base(last) == sorted.data() + sorted.size());
+  }
+}
+
+template <class Iter, class Sent>
+void test_iterators_2() {
+  // Empty sequence.
+  test_one<Iter, Sent, 0>({}, {});
+  // 1-element sequence.
+  test_one<Iter, Sent, 1>({1}, {1});
+  // 2-element sequence.
+  test_one<Iter, Sent, 2>({2, 1}, {1, 2});
+  // 3-element sequence.
+  test_one<Iter, Sent, 3>({2, 1, 3}, {1, 2, 3});
+  // Longer sequence.
+  test_one<Iter, Sent, 8>({2, 1, 3, 6, 8, 4, 11, 5}, {1, 2, 3, 4, 5, 6, 8, 11});
+  // Longer sequence with duplicates.
+  test_one<Iter, Sent, 7>({2, 1, 3, 6, 2, 8, 6}, {1, 2, 2, 3, 6, 6, 8});
+  // All elements are the same.
+  test_one<Iter, Sent, 3>({1, 1, 1}, {1, 1, 1});
+  // Already sorted.
+  test_one<Iter, Sent, 5>({1, 2, 3, 4, 5}, {1, 2, 3, 4, 5});
+  // Reverse-sorted.
+  test_one<Iter, Sent, 5>({5, 4, 3, 2, 1}, {1, 2, 3, 4, 5});
+  // Repeating pattern.
+  test_one<Iter, Sent, 6>({1, 2, 1, 2, 1, 2}, {1, 1, 1, 2, 2, 2});
+}
+
+template <class Iter>
+void test_iterators_1() {
+  test_iterators_2<Iter, Iter>();
+  test_iterators_2<Iter, sentinel_wrapper<Iter>>();
+}
+
+void test_iterators() {
+  test_iterators_1<random_access_iterator<int*>>();
+  test_iterators_1<contiguous_iterator<int*>>();
+  test_iterators_1<int*>();
+}
+
+void test() {
+  test_iterators();
+
+  struct OrderedValue {
+    int value;
+    double original_order;
+    bool operator==(const OrderedValue&) const = default;
+    auto operator<=>(const OrderedValue& rhs) const { return value <=> rhs.value; }
+  };
+
+  { // The sort is stable (equivalent elements remain in the same order).
+    using V = OrderedValue;
+    using Array = std::array<V, 20>;
+    Array orig_in = {
+      V{10, 10.1}, {12, 12.1}, {3, 3.1}, {5, 5.1}, {3, 3.2}, {3, 3.3}, {11, 11.1}, {12, 12.2}, {4, 4.1}, {4, 4.2},
+      {4, 4.3}, {1, 1.1}, {6, 6.1}, {3, 3.4}, {10, 10.2}, {8, 8.1}, {12, 12.3}, {1, 1.2}, {1, 1.3}, {5, 5.2}
+    };
+    Array expected = {
+      V{1, 1.1}, {1, 1.2}, {1, 1.3},
+      {3, 3.1}, {3, 3.2}, {3, 3.3}, {3, 3.4},
+      {4, 4.1}, {4, 4.2}, {4, 4.3},
+      {5, 5.1}, {5, 5.2},
+      {6, 6.1},
+      {8, 8.1},
+      {10, 10.1}, {10, 10.2},
+      {11, 11.1},
+      {12, 12.1}, {12, 12.2}, {12, 12.3}
+    };
+
+    {
+      auto in = orig_in;
+      auto last = std::ranges::stable_sort(in.begin(), in.end());
+      assert(in == expected);
+      assert(last == in.end());
+    }
+
+    {
+      auto in = orig_in;
+      auto last = std::ranges::stable_sort(in);
+      assert(in == expected);
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom comparator works and is stable.
+    using V = OrderedValue;
+    using Array = std::array<V, 11>;
+
+    Array orig_in = {
+      V{1, 1.1}, {2, 2.1}, {2, 2.2}, {3, 3.1}, {2, 2.3}, {3, 3.2}, {4, 4.1}, {5, 5.1}, {2, 2.4}, {5, 5.2}, {1, 1.2}
+    };
+    Array expected = {
+      V{5, 5.1}, {5, 5.2},
+      {4, 4.1},
+      {3, 3.1}, {3, 3.2},
+      {2, 2.1}, {2, 2.2}, {2, 2.3}, {2, 2.4},
+      {1, 1.1}, {1, 1.2}
+    };
+
+    {
+      auto in = orig_in;
+      auto last = std::ranges::stable_sort(in.begin(), in.end(), std::greater{});
+      assert(in == expected);
+      assert(last == in.end());
+    }
+
+    {
+      auto in = orig_in;
+      auto last = std::ranges::stable_sort(in, std::greater{});
+      assert(in == expected);
+      assert(last == in.end());
+    }
+  }
+
+  { // A custom projection works.
+    struct A {
+      int a;
+      bool operator==(const A&) const = default;
+    };
+
+    {
+      std::array in = {A{2}, A{3}, A{1}};
+      auto last = std::ranges::stable_sort(in.begin(), in.end(), {}, &A::a);
+      assert((in == std::array{A{1}, A{2}, A{3}}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {A{2}, A{3}, A{1}};
+      auto last = std::ranges::stable_sort(in, {}, &A::a);
+      assert((in == std::array{A{1}, A{2}, A{3}}));
+      assert(last == in.end());
+    }
+  }
+
+  { // `std::invoke` is used in the implementation.
+    struct S {
+      int i;
+      S(int i_) : i(i_) {}
+
+      bool comparator(const S& rhs) const { return i < rhs.i; }
+      const S& projection() const { return *this; }
+
+      bool operator==(const S&) const = default;
+    };
+
+    {
+      std::array in = {S{2}, S{3}, S{1}};
+      auto last = std::ranges::stable_sort(in.begin(), in.end(), &S::comparator, &S::projection);
+      assert((in == std::array{S{1}, S{2}, S{3}}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {S{2}, S{3}, S{1}};
+      auto last = std::ranges::stable_sort(in, &S::comparator, &S::projection);
+      assert((in == std::array{S{1}, S{2}, S{3}}));
+      assert(last == in.end());
+    }
+  }
+
+  { // The comparator can return any type that's convertible to `bool`.
+    {
+      std::array in = {2, 1, 3};
+      auto last = std::ranges::stable_sort(in.begin(), in.end(), [](int i, int j) { return BooleanTestable{i < j}; });
+      assert((in == std::array{1, 2, 3}));
+      assert(last == in.end());
+    }
+
+    {
+      std::array in = {2, 1, 3};
+      auto last = std::ranges::stable_sort(in, [](int i, int j) { return BooleanTestable{i < j}; });
+      assert((in == std::array{1, 2, 3}));
+      assert(last == in.end());
+    }
+  }
+
+  { // `std::ranges::dangling` is returned.
+    [[maybe_unused]] std::same_as<std::ranges::dangling> decltype(auto) result =
+        std::ranges::stable_sort(std::array{1, 2, 3});
+  }
+
+  // TODO: Enable the tests once the implementation switched to use iter_move/iter_swap
+  /*
+  { // ProxyIterator
+    {
+      std::array in = {2, 1, 3};
+      ProxyRange proxy{in};
+
+      std::ranges::stable_sort(proxy.begin(), proxy.end(), [](auto i, auto j) { return i.data < j.data; });
+      assert((in == std::array{1, 2, 3}));
+    }
+
+    {
+      std::array in = {2, 1, 3};
+      ProxyRange proxy{in};
+      std::ranges::stable_sort(proxy, [](auto i, auto j) { return i.data < j.data; });
+      assert((in == std::array{1, 2, 3}));
+    }
+  }
+  */
+}
+
+int main(int, char**) {
+  test();
+  // Note: `stable_sort` is not `constexpr`.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort.pass.cpp
new file mode 100644
index 0000000..aee94c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter>
+//   requires ShuffleIterator<Iter>
+//         && LessThanComparable<Iter::value_type>
+//   void
+//   stable_sort(Iter first, Iter last);
+
+#include <algorithm>
+#include <iterator>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+std::mt19937 randomness;
+
+template <class RI>
+void
+test_sort_helper(RI f, RI l)
+{
+    typedef typename std::iterator_traits<RI>::value_type value_type;
+    typedef typename std::iterator_traits<RI>::difference_type difference_type;
+
+    if (f != l)
+    {
+        difference_type len = l - f;
+        value_type* save(new value_type[len]);
+        do
+        {
+            std::copy(f, l, save);
+            std::stable_sort(save, save+len);
+            assert(std::is_sorted(save, save+len));
+        } while (std::next_permutation(f, l));
+        delete [] save;
+    }
+}
+
+template <class RI>
+void
+test_sort_driver_driver(RI f, RI l, int start, RI real_last)
+{
+    for (RI i = l; i > f + start;)
+    {
+        *--i = start;
+        if (f == i)
+        {
+            test_sort_helper(f, real_last);
+        }
+    if (start > 0)
+        test_sort_driver_driver(f, i, start-1, real_last);
+    }
+}
+
+template <class RI>
+void
+test_sort_driver(RI f, RI l, int start)
+{
+    test_sort_driver_driver(f, l, start, l);
+}
+
+template <int sa>
+void
+test_sort_()
+{
+    int ia[sa];
+    for (int i = 0; i < sa; ++i)
+    {
+        test_sort_driver(ia, ia+sa, i);
+    }
+}
+
+void
+test_larger_sorts(int N, int M)
+{
+    assert(N != 0);
+    assert(M != 0);
+    // create array length N filled with M different numbers
+    int* array = new int[N];
+    int x = 0;
+    for (int i = 0; i < N; ++i)
+    {
+        array[i] = x;
+        if (++x == M)
+            x = 0;
+    }
+    // test saw tooth pattern
+    std::stable_sort(array, array+N);
+    assert(std::is_sorted(array, array+N));
+    // test random pattern
+    std::shuffle(array, array+N, randomness);
+    std::stable_sort(array, array+N);
+    assert(std::is_sorted(array, array+N));
+    // test sorted pattern
+    std::stable_sort(array, array+N);
+    assert(std::is_sorted(array, array+N));
+    // test reverse sorted pattern
+    std::reverse(array, array+N);
+    std::stable_sort(array, array+N);
+    assert(std::is_sorted(array, array+N));
+    // test swap ranges 2 pattern
+    std::swap_ranges(array, array+N/2, array+N/2);
+    std::stable_sort(array, array+N);
+    assert(std::is_sorted(array, array+N));
+    // test reverse swap ranges 2 pattern
+    std::reverse(array, array+N);
+    std::swap_ranges(array, array+N/2, array+N/2);
+    std::stable_sort(array, array+N);
+    assert(std::is_sorted(array, array+N));
+    delete [] array;
+}
+
+void
+test_larger_sorts(int N)
+{
+    test_larger_sorts(N, 1);
+    test_larger_sorts(N, 2);
+    test_larger_sorts(N, 3);
+    test_larger_sorts(N, N/2-1);
+    test_larger_sorts(N, N/2);
+    test_larger_sorts(N, N/2+1);
+    test_larger_sorts(N, N-2);
+    test_larger_sorts(N, N-1);
+    test_larger_sorts(N, N);
+}
+
+int main(int, char**)
+{
+    // test null range
+    int d = 0;
+    std::stable_sort(&d, &d);
+    // exhaustively test all possibilities up to length 8
+    test_sort_<1>();
+    test_sort_<2>();
+    test_sort_<3>();
+    test_sort_<4>();
+    test_sort_<5>();
+    test_sort_<6>();
+    test_sort_<7>();
+    test_sort_<8>();
+
+    test_larger_sorts(256);
+    test_larger_sorts(257);
+    test_larger_sorts(499);
+    test_larger_sorts(500);
+    test_larger_sorts(997);
+    test_larger_sorts(1000);
+    test_larger_sorts(1009);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort_comp.pass.cpp
new file mode 100644
index 0000000..46c2a42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/alg.sort/stable.sort/stable_sort_comp.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+// template<RandomAccessIterator Iter, StrictWeakOrder<auto, Iter::value_type> Compare>
+//   requires ShuffleIterator<Iter>
+//         && CopyConstructible<Compare>
+//   void
+//   stable_sort(Iter first, Iter last, Compare comp);
+
+#include <algorithm>
+#include <functional>
+#include <vector>
+#include <random>
+#include <cassert>
+#include <cstddef>
+#include <memory>
+#include <utility>
+
+#include "test_macros.h"
+
+struct indirect_less
+{
+    template <class P>
+    bool operator()(const P& x, const P& y)
+        {return *x < *y;}
+};
+
+std::mt19937 randomness;
+
+struct first_only
+{
+    bool operator()(const std::pair<int, int>& x, const std::pair<int, int>& y)
+    {
+        return x.first < y.first;
+    }
+};
+
+void test()
+{
+    typedef std::pair<int, int> P;
+    const int N = 1000;
+    const int M = 10;
+    std::vector<P> v(N);
+    int x = 0;
+    int ver = 0;
+    for (int i = 0; i < N; ++i)
+    {
+        v[i] = P(x, ver);
+        if (++x == M)
+        {
+            x = 0;
+            ++ver;
+        }
+    }
+    for (int i = 0; i < N - M; i += M)
+    {
+        std::shuffle(v.begin() + i, v.begin() + i + M, randomness);
+    }
+    std::stable_sort(v.begin(), v.end(), first_only());
+    assert(std::is_sorted(v.begin(), v.end()));
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER >= 11
+    {
+    std::vector<std::unique_ptr<int> > v(1000);
+    for (int i = 0; static_cast<std::size_t>(i) < v.size(); ++i)
+        v[i].reset(new int(i));
+    std::stable_sort(v.begin(), v.end(), indirect_less());
+    assert(std::is_sorted(v.begin(), v.end(), indirect_less()));
+    assert(*v[0] == 0);
+    assert(*v[1] == 1);
+    assert(*v[2] == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/sortable_helpers.h b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/sortable_helpers.h
new file mode 100644
index 0000000..31385bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/alg.sorting/sortable_helpers.h
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SORTABLE_HELPERS_H
+#define SORTABLE_HELPERS_H
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 17
+#include <compare>
+#include <iterator>
+#include "test_iterators.h"
+#endif
+
+struct TrivialSortable {
+    int value;
+    TEST_CONSTEXPR TrivialSortable() : value(0) {}
+    TEST_CONSTEXPR TrivialSortable(int v) : value(v) {}
+    friend TEST_CONSTEXPR bool operator<(const TrivialSortable& a, const TrivialSortable& b) {
+        return a.value / 10 < b.value / 10;
+    }
+    static TEST_CONSTEXPR bool less(const TrivialSortable& a, const TrivialSortable& b) {
+        return a.value < b.value;
+    }
+};
+
+struct NonTrivialSortable {
+    int value;
+    TEST_CONSTEXPR NonTrivialSortable() : value(0) {}
+    TEST_CONSTEXPR NonTrivialSortable(int v) : value(v) {}
+    TEST_CONSTEXPR NonTrivialSortable(const NonTrivialSortable& rhs) : value(rhs.value) {}
+    TEST_CONSTEXPR_CXX14 NonTrivialSortable& operator=(const NonTrivialSortable& rhs) { value = rhs.value; return *this; }
+    friend TEST_CONSTEXPR bool operator<(const NonTrivialSortable& a, const NonTrivialSortable& b) {
+        return a.value / 10 < b.value / 10;
+    }
+    static TEST_CONSTEXPR bool less(const NonTrivialSortable& a, const NonTrivialSortable& b) {
+        return a.value < b.value;
+    }
+};
+
+
+struct TrivialSortableWithComp {
+    int value;
+    TEST_CONSTEXPR TrivialSortableWithComp() : value(0) {}
+    TEST_CONSTEXPR TrivialSortableWithComp(int v) : value(v) {}
+    struct Comparator {
+        TEST_CONSTEXPR bool operator()(const TrivialSortableWithComp& a, const TrivialSortableWithComp& b) const {
+            return a.value / 10 < b.value / 10;
+        }
+    };
+    static TEST_CONSTEXPR bool less(const TrivialSortableWithComp& a, const TrivialSortableWithComp& b) {
+        return a.value < b.value;
+    }
+};
+
+struct NonTrivialSortableWithComp {
+    int value;
+    TEST_CONSTEXPR NonTrivialSortableWithComp() : value(0) {}
+    TEST_CONSTEXPR NonTrivialSortableWithComp(int v) : value(v) {}
+    TEST_CONSTEXPR NonTrivialSortableWithComp(const NonTrivialSortableWithComp& rhs) : value(rhs.value) {}
+    TEST_CONSTEXPR_CXX14 NonTrivialSortableWithComp& operator=(const NonTrivialSortableWithComp& rhs) { value = rhs.value; return *this; }
+    struct Comparator {
+        TEST_CONSTEXPR bool operator()(const NonTrivialSortableWithComp& a, const NonTrivialSortableWithComp& b) const {
+            return a.value / 10 < b.value / 10;
+        }
+    };
+    static TEST_CONSTEXPR bool less(const NonTrivialSortableWithComp& a, const NonTrivialSortableWithComp& b) {
+        return a.value < b.value;
+    }
+};
+
+static_assert(std::is_trivially_copyable<TrivialSortable>::value, "");
+static_assert(std::is_trivially_copyable<TrivialSortableWithComp>::value, "");
+static_assert(!std::is_trivially_copyable<NonTrivialSortable>::value, "");
+static_assert(!std::is_trivially_copyable<NonTrivialSortableWithComp>::value, "");
+
+#if TEST_STD_VER > 17
+struct TracedCopy {
+  int copied = 0;
+  int data   = 0;
+
+  constexpr TracedCopy() = default;
+  constexpr TracedCopy(int i) : data(i) {}
+  constexpr TracedCopy(const TracedCopy& other) : copied(other.copied + 1), data(other.data) {}
+
+  constexpr TracedCopy(TracedCopy&& other)            = delete;
+  constexpr TracedCopy& operator=(TracedCopy&& other) = delete;
+
+  constexpr TracedCopy& operator=(const TracedCopy& other) {
+    copied = other.copied + 1;
+    data   = other.data;
+    return *this;
+  }
+
+  constexpr bool copiedOnce() const { return copied == 1; }
+
+  constexpr bool operator==(const TracedCopy& o) const { return data == o.data; }
+  constexpr auto operator<=>(const TracedCopy& o) const { return data <=> o.data; }
+};
+
+template <class Iter>
+struct NonBorrowedRange {
+  int* data_;
+  size_t size_;
+
+  // TODO: some algorithms calls std::__copy
+  // std::__copy(contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>, contiguous_iterator<int*>) doesn't seem to work.
+  // It seems that it unwraps contiguous_iterator<int*> into int*, and then it failed because there is no == between int* and
+  // sentinel_wrapper<contiguous_iterator<int*>>
+  using Sent = std::conditional_t<std::contiguous_iterator<Iter>, Iter, sentinel_wrapper<Iter>>;
+
+  constexpr NonBorrowedRange(int* d, size_t s) : data_{d}, size_{s} {}
+
+  constexpr Iter begin() const { return Iter{data_}; };
+  constexpr Sent end() const { return Sent{Iter{data_ + size_}}; };
+};
+#endif // TEST_STD_VER > 17
+
+#endif // SORTABLE_HELPERS_H
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_found_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_found_result.pass.cpp
new file mode 100644
index 0000000..af23a1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_found_result.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I>
+// struct in_found_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::in_found_result<A>, std::ranges::in_found_result<int>>);
+
+struct B {
+  B(const int&);
+  B(int&&);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::in_found_result<B>, std::ranges::in_found_result<int>>);
+static_assert(std::is_constructible_v<std::ranges::in_found_result<B>, std::ranges::in_found_result<int>&>);
+static_assert(std::is_constructible_v<std::ranges::in_found_result<B>, const std::ranges::in_found_result<int>>);
+static_assert(std::is_constructible_v<std::ranges::in_found_result<B>, const std::ranges::in_found_result<int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::in_found_result<C>, std::ranges::in_found_result<int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::in_found_result<int>&, std::ranges::in_found_result<long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_found_result<int>&, std::ranges::in_found_result<long>>);
+static_assert(std::is_convertible_v<std::ranges::in_found_result<int>&&, std::ranges::in_found_result<long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_found_result<int>&&, std::ranges::in_found_result<long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::in_found_result<MoveOnly>>);
+
+// should not be copy constructible
+static_assert(!std::is_copy_constructible_v<std::ranges::in_found_result<MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::in_found_result<NotConvertible>, std::ranges::in_found_result<int>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::in_found_result<int>::in), int>);
+static_assert(std::is_same_v<decltype(std::ranges::in_found_result<int>::found), bool>);
+
+template <class T>
+struct ConvertibleFrom {
+  constexpr ConvertibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::in_found_result<double> res{10, true};
+    assert(res.in == 10);
+    assert(res.found == true);
+    std::ranges::in_found_result<ConvertibleFrom<int>> res2 = res;
+    assert(res2.in.content == 10);
+    assert(res2.found == true);
+  }
+  {
+    std::ranges::in_found_result<MoveOnly> res{MoveOnly{}, false};
+    assert(res.in.get() == 1);
+    assert(!res.found);
+    auto res2 = std::move(res);
+    assert(res2.in.get() == 1);
+    assert(!res2.found);
+    assert(res.in.get() == 0);
+    assert(!res.found);
+  }
+  auto [in, found] = std::ranges::in_found_result<int>{2, false};
+  assert(in == 2);
+  assert(!found);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_fun_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_fun_result.pass.cpp
new file mode 100644
index 0000000..f44b598
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_fun_result.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I1, class I2>
+// struct in_fun_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::in_fun_result<A, A>, std::ranges::in_fun_result<int, int>>);
+
+struct B {
+  B(int);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::in_fun_result<B, B>, std::ranges::in_fun_result<int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_fun_result<B, B>, std::ranges::in_fun_result<int, int>&>);
+static_assert(std::is_constructible_v<std::ranges::in_fun_result<B, B>, const std::ranges::in_fun_result<int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_fun_result<B, B>, const std::ranges::in_fun_result<int, int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::in_fun_result<C, C>, std::ranges::in_fun_result<int, int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::in_fun_result<int, int>&, std::ranges::in_fun_result<long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_fun_result<int, int>&, std::ranges::in_fun_result<long, long>>);
+static_assert(std::is_convertible_v<std::ranges::in_fun_result<int, int>&&, std::ranges::in_fun_result<long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_fun_result<int, int>&&, std::ranges::in_fun_result<long, long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::in_fun_result<MoveOnly, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_fun_result<int, MoveOnly>>);
+
+// should not copy constructible with move-only type
+static_assert(!std::is_copy_constructible_v<std::ranges::in_fun_result<MoveOnly, int>>);
+static_assert(!std::is_copy_constructible_v<std::ranges::in_fun_result<int, MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::in_fun_result<NotConvertible, int>, std::ranges::in_fun_result<int, int>>);
+static_assert(!std::is_convertible_v<std::ranges::in_fun_result<int, NotConvertible>, std::ranges::in_fun_result<int, int>>);
+
+template <class T>
+struct ConvertibleFrom {
+  constexpr ConvertibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::in_fun_result<int, double> res{10, 0.};
+    assert(res.in == 10);
+    assert(res.fun == 0.);
+    std::ranges::in_fun_result<ConvertibleFrom<int>, ConvertibleFrom<double>> res2 = res;
+    assert(res2.in.content == 10);
+    assert(res2.fun.content == 0.);
+  }
+  {
+    std::ranges::in_fun_result<MoveOnly, int> res{MoveOnly{}, 2};
+    assert(res.in.get() == 1);
+    assert(res.fun == 2);
+    auto res2 = static_cast<std::ranges::in_fun_result<MoveOnly, int>>(std::move(res));
+    assert(res.in.get() == 0);
+    assert(res2.in.get() == 1);
+    assert(res2.fun == 2);
+  }
+  {
+    auto [in, fun] = std::ranges::in_fun_result<int, int>{1, 2};
+    assert(in == 1);
+    assert(fun == 2);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_in_out_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_in_out_result.pass.cpp
new file mode 100644
index 0000000..c9ab2d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_in_out_result.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I1, class I2, class O>
+// struct in_in_out_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::in_in_out_result<A, A, A>,
+                                       std::ranges::in_in_out_result<int, int, int>>);
+
+struct B {
+  B(int);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::in_in_out_result<B, B, B>, std::ranges::in_in_out_result<int, int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_in_out_result<B, B, B>, std::ranges::in_in_out_result<int, int, int>&>);
+static_assert(std::is_constructible_v<std::ranges::in_in_out_result<B, B, B>, const std::ranges::in_in_out_result<int, int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_in_out_result<B, B, B>, const std::ranges::in_in_out_result<int, int, int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::in_in_out_result<C, C, C>, std::ranges::in_in_out_result<int, int, int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::in_in_out_result<int, int, int>&, std::ranges::in_in_out_result<long, long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_in_out_result<int, int, int>&, std::ranges::in_in_out_result<long, long, long>>);
+static_assert(std::is_convertible_v<std::ranges::in_in_out_result<int, int, int>&&, std::ranges::in_in_out_result<long, long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_in_out_result<int, int, int>&&, std::ranges::in_in_out_result<long, long, long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::in_in_out_result<MoveOnly, int, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_in_out_result<int, MoveOnly, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_in_out_result<int, int, MoveOnly>>);
+
+// should not be copy constructible
+static_assert(!std::is_copy_constructible_v<std::ranges::in_in_out_result<MoveOnly, int, int>>);
+static_assert(!std::is_copy_constructible_v<std::ranges::in_in_out_result<int, MoveOnly, int>>);
+static_assert(!std::is_copy_constructible_v<std::ranges::in_in_out_result<int, int, MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::in_in_out_result<NotConvertible, int, int>, std::ranges::in_in_out_result<int, int, int>>);
+static_assert(!std::is_convertible_v<std::ranges::in_in_out_result<int, NotConvertible, int>, std::ranges::in_in_out_result<int, int, int>>);
+static_assert(!std::is_convertible_v<std::ranges::in_in_out_result<int, int, NotConvertible>, std::ranges::in_in_out_result<int, int, int>>);
+
+template <class T>
+struct ConvertibleFrom {
+  constexpr ConvertibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::in_in_out_result<int, double, float> res{10, 0., 1.f};
+    assert(res.in1 == 10);
+    assert(res.in2 == 0.);
+    assert(res.out == 1.f);
+    std::ranges::in_in_out_result<ConvertibleFrom<int>, ConvertibleFrom<double>, ConvertibleFrom<float>> res2 = res;
+    assert(res2.in1.content == 10);
+    assert(res2.in2.content == 0.);
+    assert(res2.out.content == 1.f);
+  }
+  {
+    std::ranges::in_in_out_result<MoveOnly, int, int> res1{MoveOnly{}, 0, 0};
+    assert(res1.in1.get() == 1);
+    auto res2 = static_cast<std::ranges::in_in_out_result<MoveOnly, int, int>>(std::move(res1));
+    assert(res1.in1.get() == 0);
+    assert(res2.in1.get() == 1);
+  }
+  {
+    auto [in1, in2, out] = std::ranges::in_in_out_result<int, int, int>{1, 2, 3};
+    assert(in1 == 1);
+    assert(in2 == 2);
+    assert(out == 3);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_in_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_in_result.pass.cpp
new file mode 100644
index 0000000..64d1106
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_in_result.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I1, class I2>
+// struct in_in_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::in_in_result<A, A>, std::ranges::in_in_result<int, int>>);
+
+struct B {
+  B(int);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, std::ranges::in_in_result<int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, std::ranges::in_in_result<int, int>&>);
+static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, const std::ranges::in_in_result<int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_in_result<B, B>, const std::ranges::in_in_result<int, int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::in_in_result<C, C>, std::ranges::in_in_result<int, int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::in_in_result<int, int>&, std::ranges::in_in_result<long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_in_result<int, int>&, std::ranges::in_in_result<long, long>>);
+static_assert(std::is_convertible_v<std::ranges::in_in_result<int, int>&&, std::ranges::in_in_result<long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_in_result<int, int>&&, std::ranges::in_in_result<long, long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::in_in_result<MoveOnly, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_in_result<int, MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::in_in_result<NotConvertible, int>, std::ranges::in_in_result<int, int>>);
+static_assert(!std::is_convertible_v<std::ranges::in_in_result<int, NotConvertible>, std::ranges::in_in_result<int, int>>);
+
+template <class T>
+struct ConstructibleFrom {
+  constexpr ConstructibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::in_in_result<int, double> res{10L, 0.};
+    assert(res.in1 == 10);
+    assert(res.in2 == 0.);
+    std::ranges::in_in_result<ConstructibleFrom<int>, ConstructibleFrom<double>> res2 = res;
+    assert(res2.in1.content == 10);
+    assert(res2.in2.content == 0.);
+  }
+  {
+    std::ranges::in_in_result<MoveOnly, int> res{MoveOnly{}, 0};
+    assert(res.in1.get() == 1);
+    [[maybe_unused]] auto res2 = static_cast<std::ranges::in_in_result<MoveOnly, int>>(std::move(res));
+    assert(res.in1.get() == 0);
+  }
+  {
+    auto [in1, in2] = std::ranges::in_in_result<int, int>{1, 2};
+    assert(in1 == 1);
+    assert(in2 == 2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_out_out_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_out_out_result.pass.cpp
new file mode 100644
index 0000000..682462b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_out_out_result.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I1, class O1, class O2>
+// struct in_out_out_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::in_out_out_result<A, A, A>, std::ranges::in_out_out_result<int, int, int>>);
+
+struct B {
+  B(int);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::in_out_out_result<B, B, B>, std::ranges::in_out_out_result<int, int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_out_out_result<B, B, B>, std::ranges::in_out_out_result<int, int, int>&>);
+static_assert(std::is_constructible_v<std::ranges::in_out_out_result<B, B, B>, const std::ranges::in_out_out_result<int, int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_out_out_result<B, B, B>, const std::ranges::in_out_out_result<int, int, int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::in_out_out_result<C, C, C>, std::ranges::in_out_out_result<int, int, int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::in_out_out_result<int, int, int>&, std::ranges::in_out_out_result<long, long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_out_out_result<int, int, int>&, std::ranges::in_out_out_result<long, long, long>>);
+static_assert(std::is_convertible_v<std::ranges::in_out_out_result<int, int, int>&&, std::ranges::in_out_out_result<long, long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_out_out_result<int, int, int>&&, std::ranges::in_out_out_result<long, long, long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::in_out_out_result<MoveOnly, int, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_out_out_result<int, MoveOnly, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_out_out_result<int, int, MoveOnly>>);
+
+static_assert(!std::is_copy_constructible_v<std::ranges::in_out_out_result<MoveOnly, int, int>>);
+static_assert(!std::is_copy_constructible_v<std::ranges::in_out_out_result<int, MoveOnly, int>>);
+static_assert(!std::is_copy_constructible_v<std::ranges::in_out_out_result<int, int, MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::in_out_out_result<NotConvertible, int, int>, std::ranges::in_out_out_result<int, int, int>>);
+static_assert(!std::is_convertible_v<std::ranges::in_out_out_result<int, NotConvertible, int>, std::ranges::in_out_out_result<int, int, int>>);
+static_assert(!std::is_convertible_v<std::ranges::in_out_out_result<int, int, NotConvertible>, std::ranges::in_out_out_result<int, int, int>>);
+
+template <class T>
+struct ConvertibleFrom {
+  constexpr ConvertibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::in_out_out_result<int, double, float> res{10, 0., 1.f};
+    assert(res.in == 10);
+    assert(res.out1 == 0.);
+    assert(res.out2 == 1.f);
+    std::ranges::in_out_out_result<ConvertibleFrom<int>, ConvertibleFrom<double>, ConvertibleFrom<float>> res2 = res;
+    assert(res2.in.content == 10);
+    assert(res2.out1.content == 0.);
+    assert(res2.out2.content == 1.f);
+  }
+  {
+    std::ranges::in_out_out_result<MoveOnly, int, int> res1{MoveOnly{}, 0, 0};
+    assert(res1.in.get() == 1);
+    auto res2 = static_cast<std::ranges::in_out_out_result<MoveOnly, int, int>>(std::move(res1));
+    assert(res1.in.get() == 0);
+    assert(res2.in.get() == 1);
+  }
+  {
+    auto [in, out1, out2] = std::ranges::in_out_out_result<int, int, int>{1, 2, 3};
+    assert(in == 1);
+    assert(out1 == 2);
+    assert(out2 == 3);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_out_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_out_result.pass.cpp
new file mode 100644
index 0000000..ca9f446
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/in_out_result.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I1, class O1>
+// struct in_out_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::in_out_result<A, A>, std::ranges::in_out_result<int, int>>);
+
+struct B {
+  B(int);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::in_out_result<B, B>, std::ranges::in_out_result<int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_out_result<B, B>, std::ranges::in_out_result<int, int>&>);
+static_assert(std::is_constructible_v<std::ranges::in_out_result<B, B>, const std::ranges::in_out_result<int, int>>);
+static_assert(std::is_constructible_v<std::ranges::in_out_result<B, B>, const std::ranges::in_out_result<int, int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::in_out_result<C, C>, std::ranges::in_out_result<int, int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::in_out_result<int, int>&, std::ranges::in_out_result<long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_out_result<int, int>&, std::ranges::in_out_result<long, long>>);
+static_assert(std::is_convertible_v<std::ranges::in_out_result<int, int>&&, std::ranges::in_out_result<long, long>>);
+static_assert(std::is_convertible_v<const std::ranges::in_out_result<int, int>&&, std::ranges::in_out_result<long, long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::in_out_result<MoveOnly, int>>);
+static_assert(std::is_move_constructible_v<std::ranges::in_out_result<int, MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::in_out_result<NotConvertible, int>, std::ranges::in_out_result<int, NotConvertible>>);
+static_assert(!std::is_convertible_v<std::ranges::in_out_result<int, NotConvertible>, std::ranges::in_out_result<NotConvertible, int>>);
+
+template <class T>
+struct ConvertibleFrom {
+  constexpr ConvertibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::in_out_result<double, int> res{10, 1};
+    assert(res.in == 10);
+    assert(res.out == 1);
+    std::ranges::in_out_result<ConvertibleFrom<double>, ConvertibleFrom<int>> res2 = res;
+    assert(res2.in.content == 10);
+    assert(res2.out.content == 1);
+  }
+  {
+    std::ranges::in_out_result<MoveOnly, int> res{MoveOnly{}, 10};
+    assert(res.in.get() == 1);
+    assert(res.out == 10);
+    auto res2 = std::move(res);
+    assert(res.in.get() == 0);
+    assert(res.out == 10);
+    assert(res2.in.get() == 1);
+    assert(res2.out == 10);
+  }
+  {
+    auto [min, max] = std::ranges::in_out_result<int, int>{1, 2};
+    assert(min == 1);
+    assert(max == 2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/min_max_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/min_max_result.pass.cpp
new file mode 100644
index 0000000..23c22ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/min_max_result.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class I1, class I2>
+// struct min_max_result;
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct A {
+  explicit A(int);
+};
+// no implicit conversion
+static_assert(!std::is_constructible_v<std::ranges::min_max_result<A>, std::ranges::min_max_result<int>>);
+
+struct B {
+  B(int);
+};
+// implicit conversion
+static_assert(std::is_constructible_v<std::ranges::min_max_result<B>, std::ranges::min_max_result<int>>);
+static_assert(std::is_constructible_v<std::ranges::min_max_result<B>, std::ranges::min_max_result<int>&>);
+static_assert(std::is_constructible_v<std::ranges::min_max_result<B>, const std::ranges::min_max_result<int>>);
+static_assert(std::is_constructible_v<std::ranges::min_max_result<B>, const std::ranges::min_max_result<int>&>);
+
+struct C {
+  C(int&);
+};
+static_assert(!std::is_constructible_v<std::ranges::min_max_result<C>, std::ranges::min_max_result<int>&>);
+
+// has to be convertible via const&
+static_assert(std::is_convertible_v<std::ranges::min_max_result<int>&, std::ranges::min_max_result<long>>);
+static_assert(std::is_convertible_v<const std::ranges::min_max_result<int>&, std::ranges::min_max_result<long>>);
+static_assert(std::is_convertible_v<std::ranges::min_max_result<int>&&, std::ranges::min_max_result<long>>);
+static_assert(std::is_convertible_v<const std::ranges::min_max_result<int>&&, std::ranges::min_max_result<long>>);
+
+// should be move constructible
+static_assert(std::is_move_constructible_v<std::ranges::min_max_result<MoveOnly>>);
+
+// should not be copy constructible
+static_assert(!std::is_copy_constructible_v<std::ranges::min_max_result<MoveOnly>>);
+
+struct NotConvertible {};
+// conversions should not work if there is no conversion
+static_assert(!std::is_convertible_v<std::ranges::min_max_result<NotConvertible>, std::ranges::min_max_result<int>>);
+
+template <class T>
+struct ConvertibleFrom {
+  constexpr ConvertibleFrom(T c) : content{c} {}
+  T content;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::min_max_result<double> res{10, 1};
+    assert(res.min == 10);
+    assert(res.max == 1);
+    std::ranges::min_max_result<ConvertibleFrom<int>> res2 = res;
+    assert(res2.min.content == 10);
+    assert(res2.max.content == 1);
+  }
+  {
+    std::ranges::min_max_result<MoveOnly> res{MoveOnly{}, MoveOnly{}};
+    assert(res.min.get() == 1);
+    assert(res.max.get() == 1);
+    auto res2 = std::move(res);
+    assert(res.min.get() == 0);
+    assert(res.max.get() == 0);
+    assert(res2.min.get() == 1);
+    assert(res2.max.get() == 1);
+  }
+  {
+    auto [min, max] = std::ranges::min_max_result<int>{1, 2};
+    assert(min == 1);
+    assert(max == 2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/no_unique_address.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/no_unique_address.compile.pass.cpp
new file mode 100644
index 0000000..8e0a819
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/algorithms.results/no_unique_address.compile.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// clang-cl and cl currently don't support [[no_unique_address]]
+// XFAIL: msvc
+
+// [algorithms.results]/1
+//   Each of the class templates specified in this subclause has the template parameters,
+//   data members, and special members specified below, and has no base classes or members
+//   other than those specified.
+
+#include <algorithm>
+
+#include "test_macros.h"
+
+struct Empty {};
+struct Empty2 {};
+
+static_assert(sizeof(std::ranges::in_fun_result<Empty, int>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_fun_result<int, Empty>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_fun_result<Empty, Empty>) == 2);
+
+static_assert(sizeof(std::ranges::in_in_result<Empty, int>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_in_result<int, Empty>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_in_result<Empty, Empty>) == 2);
+
+static_assert(sizeof(std::ranges::in_out_result<Empty, int>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_out_result<int, Empty>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_out_result<Empty, Empty2>) == sizeof(char));
+
+static_assert(sizeof(std::ranges::in_in_out_result<Empty, int, int>) == 2 * sizeof(int));
+static_assert(sizeof(std::ranges::in_in_out_result<int, Empty, int>) == 2 * sizeof(int));
+static_assert(sizeof(std::ranges::in_in_out_result<int, int, Empty>) == 2 * sizeof(int));
+static_assert(sizeof(std::ranges::in_in_out_result<char, Empty, Empty>) == 2);
+static_assert(sizeof(std::ranges::in_in_out_result<Empty, char, Empty>) == 2);
+static_assert(sizeof(std::ranges::in_in_out_result<Empty, Empty, char>) == 2);
+static_assert(sizeof(std::ranges::in_in_out_result<int, Empty, Empty2>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_in_out_result<Empty, Empty, Empty>) == 3);
+
+static_assert(sizeof(std::ranges::in_out_out_result<Empty, int, int>) == 2 * sizeof(int));
+static_assert(sizeof(std::ranges::in_out_out_result<int, Empty, int>) == 2 * sizeof(int));
+static_assert(sizeof(std::ranges::in_out_out_result<int, int, Empty>) == 2 * sizeof(int));
+static_assert(sizeof(std::ranges::in_out_out_result<char, Empty, Empty>) == 2);
+static_assert(sizeof(std::ranges::in_out_out_result<Empty, char, Empty>) == 2);
+static_assert(sizeof(std::ranges::in_out_out_result<Empty, Empty, char>) == 2);
+static_assert(sizeof(std::ranges::in_out_out_result<int, Empty, Empty2>) == sizeof(int));
+static_assert(sizeof(std::ranges::in_out_out_result<Empty, Empty, Empty>) == 3);
+
+// In min_max_result both elements have the same type, so they can't have the same address.
+// So the only way to test that [[no_unique_address]] is used is to have it in another struct
+struct MinMaxNoUniqueAddress {
+  int a;
+  TEST_NO_UNIQUE_ADDRESS std::ranges::min_max_result<Empty> b;
+  int c;
+};
+
+static_assert(sizeof(std::ranges::min_max_result<Empty>) == 2);
+static_assert(sizeof(MinMaxNoUniqueAddress) == 8);
+
+static_assert(sizeof(std::ranges::in_found_result<Empty>) == sizeof(bool));
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/ranges_result_alias_declarations.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_result_alias_declarations.compile.pass.cpp
new file mode 100644
index 0000000..a72c3a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_result_alias_declarations.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+
+// ensure that all result alias declarations are defined
+
+#include <algorithm>
+#include <memory>
+#include <type_traits>
+
+using namespace std::ranges;
+
+static_assert(std::is_same_v<in_fun_result<int, long>, for_each_result<int, long>>);
+static_assert(std::is_same_v<in_fun_result<int, long>, for_each_n_result<int, long>>);
+
+static_assert(std::is_same_v<in_in_result<int, long>, mismatch_result<int, long>>);
+static_assert(std::is_same_v<in_in_result<int, long>, swap_ranges_result<int, long>>);
+
+static_assert(std::is_same_v<in_out_result<int, long>, copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, copy_n_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, copy_if_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, copy_backward_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, move_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, move_backward_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, partial_sort_copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, remove_copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, remove_copy_if_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, replace_copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, replace_copy_if_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, reverse_copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, rotate_copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, set_difference_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, unary_transform_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, uninitialized_copy_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, uninitialized_copy_n_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, uninitialized_move_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, uninitialized_move_n_result<int, long>>);
+static_assert(std::is_same_v<in_out_result<int, long>, unique_copy_result<int, long>>);
+
+static_assert(std::is_same_v<in_in_out_result<int, long, char>, binary_transform_result<int, long, char>>);
+static_assert(std::is_same_v<in_in_out_result<int, long, char>, merge_result<int, long, char>>);
+static_assert(std::is_same_v<in_in_out_result<int, long, char>, set_symmetric_difference_result<int, long, char>>);
+static_assert(std::is_same_v<in_in_out_result<int, long, char>, set_union_result<int, long, char>>);
+static_assert(std::is_same_v<in_in_out_result<int, long, char>, set_intersection_result<int, long, char>>);
+
+static_assert(std::is_same_v<in_out_out_result<int, long, char>, partition_copy_result<int, long, char>>);
+
+static_assert(std::is_same_v<min_max_result<int>, minmax_result<int>>);
+static_assert(std::is_same_v<min_max_result<int>, minmax_element_result<int>>);
+
+static_assert(std::is_same_v<in_found_result<int>, next_permutation_result<int>>);
+static_assert(std::is_same_v<in_found_result<int>, prev_permutation_result<int>>);
+
+// static_assert(std::is_same_v<out_value_result<int>, iota_result<int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_dangling.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_dangling.pass.cpp
new file mode 100644
index 0000000..b19f42f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_dangling.pass.cpp
@@ -0,0 +1,216 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+//
+// Range algorithms should return `std::ranges::dangling` when given a dangling range.
+
+#include <algorithm>
+
+#include <array>
+#include <concepts>
+#include <functional>
+#include <iterator>
+#include <ranges>
+#include <random>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct NonBorrowedRange {
+  using Iter = int*;
+  using Sent = sentinel_wrapper<Iter>;
+
+  int* data_;
+  size_t size_;
+
+  template <size_t N>
+  constexpr explicit NonBorrowedRange(std::array<int, N>& arr) : data_{arr.data()}, size_{arr.size()} {}
+
+  constexpr Iter begin() const { return data_; };
+  constexpr Sent end() const { return Sent{data_ + size_}; };
+};
+
+using R = NonBorrowedRange;
+
+// (dangling_in, ...)
+template <class ExpectedT = std::ranges::dangling, class Func, std::ranges::range Input, class ...Args>
+constexpr void dangling_1st(Func&& func, Input& in, Args&& ...args) {
+  decltype(auto) result = func(R(in), std::forward<Args>(args)...);
+  static_assert(std::same_as<decltype(result), ExpectedT>);
+}
+
+// (in, dangling_in, ...)
+template <class ExpectedT = std::ranges::dangling, class Func, std::ranges::range Input, class ...Args>
+constexpr void dangling_2nd(Func&& func, Input& in1, Input& in2, Args&& ...args) {
+  decltype(auto) result = func(in1, R(in2), std::forward<Args>(args)...);
+  static_assert(std::same_as<decltype(result), ExpectedT>);
+}
+
+// (dangling_in1, dangling_in2, ...)
+template <class ExpectedT = std::ranges::dangling, class Func, std::ranges::range Input, class ...Args>
+constexpr void dangling_both(Func&& func, Input& in1, Input& in2, Args&& ...args) {
+  decltype(auto) result = func(R(in1), R(in2), std::forward<Args>(args)...);
+  static_assert(std::same_as<decltype(result), ExpectedT>);
+}
+
+std::mt19937 rand_gen() { return std::mt19937(); }
+
+// TODO: also check the iterator values for algorithms that return `*_result` types.
+constexpr bool test_all() {
+  using std::ranges::dangling;
+
+  using std::ranges::binary_transform_result;
+  using std::ranges::copy_result;
+  using std::ranges::copy_backward_result;
+  using std::ranges::copy_if_result;
+  using std::ranges::for_each_result;
+  using std::ranges::merge_result;
+  using std::ranges::minmax_result;
+  using std::ranges::mismatch_result;
+  using std::ranges::move_result;
+  using std::ranges::move_backward_result;
+  using std::ranges::next_permutation_result;
+  using std::ranges::partial_sort_copy_result;
+  using std::ranges::partition_copy_result;
+  using std::ranges::prev_permutation_result;
+  using std::ranges::remove_copy_result;
+  using std::ranges::remove_copy_if_result;
+  using std::ranges::replace_copy_result;
+  using std::ranges::replace_copy_if_result;
+  using std::ranges::reverse_copy_result;
+  using std::ranges::rotate_copy_result;
+  using std::ranges::set_difference_result;
+  using std::ranges::set_intersection_result;
+  using std::ranges::set_symmetric_difference_result;
+  using std::ranges::set_union_result;
+  using std::ranges::swap_ranges_result;
+  using std::ranges::unary_transform_result;
+  using std::ranges::unique_copy_result;
+
+  auto unary_pred = [](int i) { return i > 0; };
+  auto binary_pred = [](int i, int j) { return i < j; };
+  auto gen = [] { return 42; };
+
+  std::array in = {1, 2, 3};
+  std::array in2 = {4, 5, 6};
+
+  auto mid = in.begin() + 1;
+
+  std::array output = {7, 8, 9, 10, 11, 12};
+  auto out = output.begin();
+  auto out2 = output.begin() + 1;
+
+  int x = 2;
+  size_t count = 1;
+
+  dangling_1st(std::ranges::find, in, x);
+  dangling_1st(std::ranges::find_if, in, unary_pred);
+  dangling_1st(std::ranges::find_if_not, in, unary_pred);
+  dangling_1st(std::ranges::find_first_of, in, in2);
+  dangling_1st(std::ranges::adjacent_find, in);
+  dangling_1st<mismatch_result<dangling, int*>>(std::ranges::mismatch, in, in2);
+  dangling_2nd<mismatch_result<int*, dangling>>(std::ranges::mismatch, in, in2);
+  dangling_both<mismatch_result<dangling, dangling>>(std::ranges::mismatch, in, in2);
+  dangling_1st(std::ranges::partition_point, in, unary_pred);
+  dangling_1st(std::ranges::lower_bound, in, x);
+  dangling_1st(std::ranges::upper_bound, in, x);
+  dangling_1st(std::ranges::equal_range, in, x);
+  dangling_1st(std::ranges::min_element, in);
+  dangling_1st(std::ranges::max_element, in);
+  dangling_1st<minmax_result<dangling>>(std::ranges::minmax_element, in);
+  dangling_1st(std::ranges::search, in, in2);
+  dangling_1st(std::ranges::search_n, in, count, x);
+  dangling_1st(std::ranges::find_end, in, in2);
+  dangling_1st(std::ranges::is_sorted_until, in);
+  dangling_1st(std::ranges::is_heap_until, in);
+  dangling_1st<for_each_result<dangling, decltype(unary_pred)>>(std::ranges::for_each, in, unary_pred);
+  dangling_1st<copy_result<dangling, int*>>(std::ranges::copy, in, out);
+  dangling_1st<copy_backward_result<dangling, int*>>(std::ranges::copy_backward, in, output.end());
+  dangling_1st<copy_if_result<dangling, int*>>(std::ranges::copy_if, in, out, unary_pred);
+  dangling_1st<move_result<dangling, int*>>(std::ranges::move, in, out);
+  dangling_1st<move_backward_result<dangling, int*>>(std::ranges::move_backward, in, output.end());
+  dangling_1st(std::ranges::fill, in, x);
+  { // transform
+    std::array out_transform = {false, true, true};
+    dangling_1st<unary_transform_result<dangling, bool*>>(std::ranges::transform, in, out_transform.begin(), unary_pred);
+    dangling_1st<binary_transform_result<dangling, int*, bool*>>(
+        std::ranges::transform, in, in2, out_transform.begin(), binary_pred);
+    dangling_2nd<binary_transform_result<int*, dangling, bool*>>(
+        std::ranges::transform, in, in2, out_transform.begin(), binary_pred);
+    dangling_both<binary_transform_result<dangling, dangling, bool*>>(
+        std::ranges::transform, in, in2, out_transform.begin(), binary_pred);
+  }
+  dangling_1st(std::ranges::generate, in, gen);
+  dangling_1st<remove_copy_result<dangling, int*>>(std::ranges::remove_copy, in, out, x);
+  dangling_1st<remove_copy_if_result<dangling, int*>>(std::ranges::remove_copy_if, in, out, unary_pred);
+  dangling_1st(std::ranges::replace, in, x, x);
+  dangling_1st(std::ranges::replace_if, in, std::identity{}, x);
+  dangling_1st<replace_copy_result<dangling, int*>>(std::ranges::replace_copy, in, out, x, x);
+  dangling_1st<replace_copy_if_result<dangling, int*>>(std::ranges::replace_copy_if, in, out, unary_pred, x);
+  dangling_1st<swap_ranges_result<dangling, int*>>(std::ranges::swap_ranges, in, in2);
+  dangling_2nd<swap_ranges_result<int*, dangling>>(std::ranges::swap_ranges, in, in2);
+  dangling_both<swap_ranges_result<dangling, dangling>>(std::ranges::swap_ranges, in, in2);
+  dangling_1st<reverse_copy_result<dangling, int*>>(std::ranges::reverse_copy, in, out);
+  dangling_1st<rotate_copy_result<dangling, int*>>(std::ranges::rotate_copy, in, mid, out);
+  dangling_1st<unique_copy_result<dangling, int*>>(std::ranges::unique_copy, in, out);
+  dangling_1st<partition_copy_result<dangling, int*, int*>>(std::ranges::partition_copy, in, out, out2, unary_pred);
+  dangling_1st<partial_sort_copy_result<dangling, int*>>(std::ranges::partial_sort_copy, in, in2);
+  dangling_2nd<partial_sort_copy_result<int*, dangling>>(std::ranges::partial_sort_copy, in, in2);
+  dangling_both<partial_sort_copy_result<dangling, dangling>>(std::ranges::partial_sort_copy, in, in2);
+  dangling_1st<merge_result<dangling, int*, int*>>(std::ranges::merge, in, in2, out);
+  dangling_2nd<merge_result<int*, dangling, int*>>(std::ranges::merge, in, in2, out);
+  dangling_both<merge_result<dangling, dangling, int*>>(std::ranges::merge, in, in2, out);
+  dangling_1st<set_difference_result<dangling, int*>>(std::ranges::set_difference, in, in2, out);
+  dangling_1st<set_intersection_result<dangling, int*, int*>>(std::ranges::set_intersection, in, in2, out);
+  dangling_2nd<set_intersection_result<int*, dangling, int*>>(std::ranges::set_intersection, in, in2, out);
+  dangling_both<set_intersection_result<dangling, dangling, int*>>(std::ranges::set_intersection, in, in2, out);
+  dangling_1st<set_symmetric_difference_result<dangling, int*, int*>>(
+      std::ranges::set_symmetric_difference, in, in2, out);
+  dangling_2nd<set_symmetric_difference_result<int*, dangling, int*>>(
+      std::ranges::set_symmetric_difference, in, in2, out);
+  dangling_both<set_symmetric_difference_result<dangling, dangling, int*>>(
+      std::ranges::set_symmetric_difference, in, in2, out);
+  dangling_1st<set_union_result<dangling, int*, int*>>(std::ranges::set_union, in, in2, out);
+  dangling_2nd<set_union_result<int*, dangling, int*>>(std::ranges::set_union, in, in2, out);
+  dangling_both<set_union_result<dangling, dangling, int*>>(std::ranges::set_union, in, in2, out);
+  dangling_1st(std::ranges::remove, in, x);
+  dangling_1st(std::ranges::remove_if, in, unary_pred);
+  dangling_1st(std::ranges::reverse, in);
+  dangling_1st(std::ranges::rotate, in, mid);
+  if (!std::is_constant_evaluated()) // `shuffle` isn't `constexpr`.
+    dangling_1st(std::ranges::shuffle, in, rand_gen());
+  dangling_1st(std::ranges::unique, in);
+  dangling_1st(std::ranges::partition, in, unary_pred);
+  if (!std::is_constant_evaluated())
+    dangling_1st(std::ranges::stable_partition, in, unary_pred);
+  dangling_1st(std::ranges::sort, in);
+  if (!std::is_constant_evaluated())
+    dangling_1st(std::ranges::stable_sort, in);
+  dangling_1st(std::ranges::partial_sort, in, mid);
+  dangling_1st(std::ranges::nth_element, in, mid);
+  if (!std::is_constant_evaluated())
+    dangling_1st(std::ranges::inplace_merge, in, mid);
+  dangling_1st(std::ranges::make_heap, in);
+  dangling_1st(std::ranges::push_heap, in);
+  dangling_1st(std::ranges::pop_heap, in);
+  dangling_1st(std::ranges::sort_heap, in);
+  dangling_1st<prev_permutation_result<dangling>>(std::ranges::prev_permutation, in);
+  dangling_1st<next_permutation_result<dangling>>(std::ranges::next_permutation, in);
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all();
+  static_assert(test_all());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_differing_projections.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_differing_projections.pass.cpp
new file mode 100644
index 0000000..d940a7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_differing_projections.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+//
+// Range algorithms should support the case where the ranges they operate on have different value types and the given
+// projection functors are different (each projection applies to a different value type).
+
+#include <algorithm>
+
+#include <array>
+#include <functional>
+#include <iterator>
+#include <ranges>
+#include <utility>
+
+// (in1, in2, ...)
+template <class Func, std::ranges::range Input1, std::ranges::range Input2, class ...Args>
+constexpr void test(Func&& func, Input1& in1, Input2& in2, Args&& ...args) {
+  (void)func(in1.begin(), in1.end(), in2.begin(), in2.end(), std::forward<Args>(args)...);
+  (void)func(in1, in2, std::forward<Args>(args)...);
+}
+
+constexpr bool test_all() {
+  struct A {
+    int x = 0;
+
+    constexpr A() = default;
+    constexpr A(int value) : x(value) {}
+    constexpr operator int() const { return x; }
+
+    constexpr auto operator<=>(const A&) const = default;
+  };
+
+  std::array in = {1, 2, 3};
+  std::array in2 = {A{4}, A{5}, A{6}};
+
+  std::array output = {7, 8, 9, 10, 11, 12};
+  auto out = output.begin();
+  std::array output2 = {A{7}, A{8}, A{9}, A{10}, A{11}, A{12}};
+  auto out2 = output2.begin();
+
+  std::ranges::equal_to eq;
+  std::ranges::less less;
+  auto sum = [](int lhs, A rhs) { return lhs + rhs.x; };
+  auto proj1 = [](int x) { return x * -1; };
+  auto proj2 = [](A a) { return a.x * -1; };
+
+  test(std::ranges::equal, in, in2, eq, proj1, proj2);
+  test(std::ranges::lexicographical_compare, in, in2, eq, proj1, proj2);
+  test(std::ranges::is_permutation, in, in2, eq, proj1, proj2);
+  test(std::ranges::includes, in, in2, less, proj1, proj2);
+  test(std::ranges::find_first_of, in, in2, eq, proj1, proj2);
+  test(std::ranges::mismatch, in, in2, eq, proj1, proj2);
+  test(std::ranges::search, in, in2, eq, proj1, proj2);
+  test(std::ranges::find_end, in, in2, eq, proj1, proj2);
+  test(std::ranges::transform, in, in2, out, sum, proj1, proj2);
+  test(std::ranges::transform, in, in2, out2, sum, proj1, proj2);
+  test(std::ranges::partial_sort_copy, in, in2, less, proj1, proj2);
+  test(std::ranges::merge, in, in2, out, less, proj1, proj2);
+  test(std::ranges::merge, in, in2, out2, less, proj1, proj2);
+  test(std::ranges::set_intersection, in, in2, out, less, proj1, proj2);
+  test(std::ranges::set_intersection, in, in2, out2, less, proj1, proj2);
+  test(std::ranges::set_difference, in, in2, out, less, proj1, proj2);
+  test(std::ranges::set_difference, in, in2, out2, less, proj1, proj2);
+  test(std::ranges::set_symmetric_difference, in, in2, out, less, proj1, proj2);
+  test(std::ranges::set_symmetric_difference, in, in2, out2, less, proj1, proj2);
+  test(std::ranges::set_union, in, in2, out, less, proj1, proj2);
+  test(std::ranges::set_union, in, in2, out2, less, proj1, proj2);
+  //test(std::ranges::starts_with, in, in2, eq, proj1, proj2);
+  //test(std::ranges::ends_with, in, in2, eq, proj1, proj2);
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all();
+  static_assert(test_all());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_nonbool_predicates.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_nonbool_predicates.pass.cpp
new file mode 100644
index 0000000..3845720
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_nonbool_predicates.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+//
+// Range algorithms that take predicates should support predicates that return a non-boolean value as long as the
+// returned type is implicitly convertible to bool.
+
+#include <algorithm>
+
+#include <array>
+#include <concepts>
+#include <initializer_list>
+#include <iterator>
+#include <ranges>
+
+#include "boolean_testable.h"
+
+constexpr auto unary_pred = [](int i) { return BooleanTestable(i > 0); };
+static_assert(!std::same_as<decltype(unary_pred(1)), bool>);
+static_assert(std::convertible_to<decltype(unary_pred(1)), bool>);
+
+constexpr auto binary_pred = [](int i, int j) { return BooleanTestable(i < j); };
+static_assert(!std::same_as<decltype(binary_pred(1, 2)), bool>);
+static_assert(std::convertible_to<decltype(binary_pred(1, 2)), bool>);
+
+// Invokes both the (iterator, sentinel, ...) and the (range, ...) overloads of the given niebloid.
+
+// (in, ...)
+template <class Func, std::ranges::range Input, class... Args>
+constexpr void test(Func&& func, Input& in, Args&&... args) {
+  (void)func(in.begin(), in.end(), std::forward<Args>(args)...);
+  (void)func(in, std::forward<Args>(args)...);
+}
+
+// (in1, in2, ...)
+template <class Func, std::ranges::range Input, class... Args>
+constexpr void test(Func&& func, Input& in1, Input& in2, Args&&... args) {
+  (void)func(in1.begin(), in1.end(), in2.begin(), in2.end(), std::forward<Args>(args)...);
+  (void)func(in1, in2, std::forward<Args>(args)...);
+}
+
+// (in, mid, ...)
+template <class Func, std::ranges::range Input, class... Args>
+constexpr void test_mid(Func&& func, Input& in, std::ranges::iterator_t<Input> mid, Args&&... args) {
+  (void)func(in.begin(), mid, in.end(), std::forward<Args>(args)...);
+  (void)func(in, mid, std::forward<Args>(args)...);
+}
+
+constexpr bool test_all() {
+  std::array in  = {1, 2, 3};
+  std::array in2 = {4, 5, 6};
+  auto mid       = in.begin() + 1;
+
+  std::array output = {7, 8, 9, 10, 11, 12};
+  auto out          = output.begin();
+  auto out2         = output.begin() + 1;
+
+  int x     = 2;
+  int count = 1;
+
+  test(std::ranges::any_of, in, unary_pred);
+  test(std::ranges::all_of, in, unary_pred);
+  test(std::ranges::none_of, in, unary_pred);
+  test(std::ranges::find_if, in, unary_pred);
+  test(std::ranges::find_if_not, in, unary_pred);
+  test(std::ranges::find_first_of, in, in2, binary_pred);
+  test(std::ranges::adjacent_find, in, binary_pred);
+  test(std::ranges::mismatch, in, in2, binary_pred);
+  test(std::ranges::equal, in, in2, binary_pred);
+  test(std::ranges::lexicographical_compare, in, in2, binary_pred);
+  test(std::ranges::partition_point, in, unary_pred);
+  test(std::ranges::lower_bound, in, x, binary_pred);
+  test(std::ranges::upper_bound, in, x, binary_pred);
+  test(std::ranges::equal_range, in, x, binary_pred);
+  test(std::ranges::binary_search, in, x, binary_pred);
+
+  // min
+  (void)std::ranges::min(1, 2, binary_pred);
+  (void)std::ranges::min(std::initializer_list<int>{1, 2}, binary_pred);
+  (void)std::ranges::min(in, binary_pred);
+  // max
+  (void)std::ranges::max(1, 2, binary_pred);
+  (void)std::ranges::max(std::initializer_list<int>{1, 2}, binary_pred);
+  (void)std::ranges::max(in, binary_pred);
+  // minmax
+  (void)std::ranges::minmax(1, 2, binary_pred);
+  (void)std::ranges::minmax(std::initializer_list<int>{1, 2}, binary_pred);
+  (void)std::ranges::minmax(in, binary_pred);
+
+  test(std::ranges::min_element, in, binary_pred);
+  test(std::ranges::max_element, in, binary_pred);
+  test(std::ranges::minmax_element, in, binary_pred);
+  test(std::ranges::count_if, in, unary_pred);
+  test(std::ranges::search, in, in2, binary_pred);
+  test(std::ranges::search_n, in, count, x, binary_pred);
+  test(std::ranges::find_end, in, in2, binary_pred);
+  test(std::ranges::is_partitioned, in, unary_pred);
+  test(std::ranges::is_sorted, in, binary_pred);
+  test(std::ranges::is_sorted_until, in, binary_pred);
+  test(std::ranges::includes, in, in2, binary_pred);
+  test(std::ranges::is_heap, in, binary_pred);
+  test(std::ranges::is_heap_until, in, binary_pred);
+  (void)std::ranges::clamp(2, 1, 3, binary_pred);
+  test(std::ranges::is_permutation, in, in2, binary_pred);
+  test(std::ranges::copy_if, in, out, unary_pred);
+  test(std::ranges::remove_copy_if, in, out, unary_pred);
+  test(std::ranges::replace_if, in, unary_pred, x);
+  test(std::ranges::replace_copy_if, in, out, unary_pred, x);
+  test(std::ranges::unique_copy, in, out, binary_pred);
+  test(std::ranges::partition_copy, in, out, out2, unary_pred);
+  test(std::ranges::partial_sort_copy, in, in2, binary_pred);
+  test(std::ranges::merge, in, in2, out, binary_pred);
+  test(std::ranges::set_difference, in, in2, out, binary_pred);
+  test(std::ranges::set_intersection, in, in2, out, binary_pred);
+  test(std::ranges::set_symmetric_difference, in, in2, out, binary_pred);
+  test(std::ranges::set_union, in, in2, out, binary_pred);
+  test(std::ranges::remove_if, in, unary_pred);
+  test(std::ranges::unique, in, binary_pred);
+  test(std::ranges::partition, in, unary_pred);
+  if (!std::is_constant_evaluated())
+    test(std::ranges::stable_partition, in, unary_pred);
+  test(std::ranges::sort, in, binary_pred);
+  if (!std::is_constant_evaluated())
+    test(std::ranges::stable_sort, in, binary_pred);
+  test_mid(std::ranges::partial_sort, in, mid, binary_pred);
+  test_mid(std::ranges::nth_element, in, mid, binary_pred);
+  if (!std::is_constant_evaluated())
+    test_mid(std::ranges::inplace_merge, in, mid, binary_pred);
+  test(std::ranges::make_heap, in, binary_pred);
+  test(std::ranges::push_heap, in, binary_pred);
+  test(std::ranges::pop_heap, in, binary_pred);
+  test(std::ranges::sort_heap, in, binary_pred);
+  test(std::ranges::prev_permutation, in, binary_pred);
+  test(std::ranges::next_permutation, in, binary_pred);
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all();
+  static_assert(test_all());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_omitting_invoke.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_omitting_invoke.pass.cpp
new file mode 100644
index 0000000..35b9f92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_omitting_invoke.pass.cpp
@@ -0,0 +1,181 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+//
+// Range algorithms should use `std::invoke` to call the given projection(s) (and predicates, where applicable).
+
+#include <algorithm>
+
+#include <array>
+#include <concepts>
+#include <initializer_list>
+#include <iterator>
+#include <ranges>
+
+struct Foo {
+  int val;
+  constexpr bool unary_pred() const { return val > 0; }
+  constexpr bool binary_pred(const Foo& rhs) const { return val < rhs.val; }
+  constexpr auto operator<=>(const Foo&) const = default;
+};
+
+struct Bar {
+  Foo val;
+  Bar create() const { return Bar(); }
+};
+
+// Invokes both the (iterator, sentinel, ...) and the (range, ...) overloads of the given niebloid.
+
+// (in, ...)
+template <class Func, std::ranges::range Input, class... Args>
+constexpr void test(Func&& func, Input& in, Args&&... args) {
+  (void)func(in.begin(), in.end(), std::forward<Args>(args)...);
+  (void)func(in, std::forward<Args>(args)...);
+}
+
+// (in1, in2, ...)
+template <class Func, std::ranges::range Input, class... Args>
+constexpr void test(Func&& func, Input& in1, Input& in2, Args&&... args) {
+  (void)func(in1.begin(), in1.end(), in2.begin(), in2.end(), std::forward<Args>(args)...);
+  (void)func(in1, in2, std::forward<Args>(args)...);
+}
+
+// (in, mid, ...)
+template <class Func, std::ranges::range Input, class... Args>
+constexpr void test_mid(Func&& func, Input& in, std::ranges::iterator_t<Input> mid, Args&&... args) {
+  (void)func(in.begin(), mid, in.end(), std::forward<Args>(args)...);
+  (void)func(in, mid, std::forward<Args>(args)...);
+}
+
+constexpr bool test_all() {
+  std::array in  = {Bar{Foo{1}}, Bar{Foo{2}}, Bar{Foo{3}}};
+  std::array in2 = {Bar{Foo{4}}, Bar{Foo{5}}, Bar{Foo{6}}};
+  auto mid       = in.begin() + 1;
+
+  std::array output = {Bar{Foo{7}}, Bar{Foo{8}}, Bar{Foo{9}}, Bar{Foo{10}}, Bar{Foo{11}}, Bar{Foo{12}}};
+  auto out          = output.begin();
+  auto out2         = output.begin() + 1;
+
+  Bar a{Foo{1}};
+  Bar b{Foo{2}};
+  Bar c{Foo{3}};
+
+  Foo x{2};
+  size_t count = 1;
+
+  test(std::ranges::any_of, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::all_of, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::none_of, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::find, in, x, &Bar::val);
+  test(std::ranges::find_if, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::find_if_not, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::find_first_of, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::adjacent_find, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::mismatch, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::equal, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::lexicographical_compare, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::partition_point, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::lower_bound, in, x, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::upper_bound, in, x, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::equal_range, in, x, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::binary_search, in, x, &Foo::binary_pred, &Bar::val);
+
+  // min
+  (void)std::ranges::min(a, b, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::min(std::initializer_list<Bar>{a, b}, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::min(in, &Foo::binary_pred, &Bar::val);
+  // max
+  (void)std::ranges::max(a, b, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::max(std::initializer_list<Bar>{a, b}, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::max(in, &Foo::binary_pred, &Bar::val);
+  // minmax
+  (void)std::ranges::minmax(a, b, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::minmax(std::initializer_list<Bar>{a, b}, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::minmax(in, &Foo::binary_pred, &Bar::val);
+
+  test(std::ranges::min_element, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::max_element, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::minmax_element, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::count, in, x, &Bar::val);
+  test(std::ranges::count_if, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::search, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::search_n, in, count, x, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::find_end, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::is_partitioned, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::is_sorted, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::is_sorted_until, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::includes, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::is_heap, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::is_heap_until, in, &Foo::binary_pred, &Bar::val);
+  (void)std::ranges::clamp(b, a, c, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::is_permutation, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::for_each, in, &Foo::unary_pred, &Bar::val);
+  std::ranges::for_each_n(in.begin(), count, &Foo::unary_pred, &Bar::val);
+  // `copy`, `copy_n` and `copy_backward` have neither a projection nor a predicate.
+  test(std::ranges::copy_if, in, out, &Foo::unary_pred, &Bar::val);
+  // `move` and `move_backward` have neither a projection nor a predicate.
+  // `fill` and `fill_n` have neither a projection nor a predicate.
+  {
+    std::array out_transform = {false, true, true};
+    test(std::ranges::transform, in, out_transform.begin(), &Foo::unary_pred, &Bar::val);
+  }
+  // Whether `ranges::generate{,_n}` invokes `gen` via `std::invoke` is not observable.
+  test(std::ranges::remove_copy, in, out, x, &Bar::val);
+  test(std::ranges::remove_copy_if, in, out, &Foo::unary_pred, &Bar::val);
+  // `replace*` algorithms only use the projection to compare the elements, not to write them.
+  test(std::ranges::replace, in, x, a, &Bar::val);
+  test(std::ranges::replace_if, in, &Foo::unary_pred, a, &Bar::val);
+  test(std::ranges::replace_copy, in, out, x, a, &Bar::val);
+  test(std::ranges::replace_copy_if, in, out, &Foo::unary_pred, a, &Bar::val);
+  // `swap_ranges` has neither a projection nor a predicate.
+  // `reverse_copy` has neither a projection nor a predicate.
+  // `rotate_copy` has neither a projection nor a predicate.
+  // For `sample`, whether the given generator is invoked via `std::invoke` is not observable.
+  test(std::ranges::unique_copy, in, out, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::partition_copy, in, out, out2, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::partial_sort_copy, in, in2, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::merge, in, in2, out, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::set_difference, in, in2, out, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::set_intersection, in, in2, out, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::set_symmetric_difference, in, in2, out, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::set_union, in, in2, out, &Foo::binary_pred, &Bar::val, &Bar::val);
+  test(std::ranges::remove, in, x, &Bar::val);
+  test(std::ranges::remove_if, in, &Foo::unary_pred, &Bar::val);
+  // `reverse` has neither a projection nor a predicate.
+  // `rotate` has neither a projection nor a predicate.
+  // For `shuffle`, whether the given generator is invoked via `std::invoke` is not observable.
+  test(std::ranges::unique, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::partition, in, &Foo::unary_pred, &Bar::val);
+  if (!std::is_constant_evaluated())
+    test(std::ranges::stable_partition, in, &Foo::unary_pred, &Bar::val);
+  test(std::ranges::sort, in, &Foo::binary_pred, &Bar::val);
+  if (!std::is_constant_evaluated())
+    test(std::ranges::stable_sort, in, &Foo::binary_pred, &Bar::val);
+  test_mid(std::ranges::partial_sort, in, mid, &Foo::binary_pred, &Bar::val);
+  test_mid(std::ranges::nth_element, in, mid, &Foo::binary_pred, &Bar::val);
+  if (!std::is_constant_evaluated())
+    test_mid(std::ranges::inplace_merge, in, mid, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::make_heap, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::push_heap, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::pop_heap, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::sort_heap, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::prev_permutation, in, &Foo::binary_pred, &Bar::val);
+  test(std::ranges::next_permutation, in, &Foo::binary_pred, &Bar::val);
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all();
+  static_assert(test_all());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_proxy_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_proxy_iterators.pass.cpp
new file mode 100644
index 0000000..d383e18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/ranges_robust_against_proxy_iterators.pass.cpp
@@ -0,0 +1,189 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <algorithm>
+//
+// Range algorithms should work with proxy iterators. For example, the implementations should use `iter_swap` (which is
+// a customization point) rather than plain `swap` (which might not work with certain valid iterators).
+
+#include <algorithm>
+
+#include <array>
+#include <concepts>
+#include <initializer_list>
+#include <iterator>
+#include <memory>
+#include <random>
+#include <ranges>
+
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+// (in, ...)
+template <class Func, std::ranges::range Input, class ...Args>
+constexpr void test(Func&& func, Input& in, Args&& ...args) {
+  (void)func(in.begin(), in.end(), std::forward<Args>(args)...);
+  (void)func(in, std::forward<Args>(args)...);
+}
+
+// (in1, in2, ...)
+template <class Func, std::ranges::range Range1, std::ranges::range Range2, class ...Args>
+constexpr void test(Func&& func, Range1& r1, Range2& r2, Args&& ...args) {
+  (void)func(r1.begin(), r1.end(), r2.begin(), r2.end(), std::forward<Args>(args)...);
+  (void)func(r1, r2, std::forward<Args>(args)...);
+}
+
+// (in, mid, ...)
+template <class Func, std::ranges::range Input, class ...Args>
+constexpr void test_mid(Func&& func, Input& in, std::ranges::iterator_t<Input> mid, Args&& ...args) {
+  (void)func(in.begin(), mid, in.end(), std::forward<Args>(args)...);
+  (void)func(in, mid, std::forward<Args>(args)...);
+}
+
+std::mt19937 rand_gen() { return std::mt19937(); }
+
+template <class T>
+constexpr void run_tests() {
+  std::array input = {T{1}, T{2}, T{3}};
+  ProxyRange in{input};
+  std::array input2 = {T{4}, T{5}, T{6}};
+  ProxyRange in2{input2};
+
+  auto mid = in.begin() + 1;
+
+  std::array output = {T{4}, T{5}, T{6}, T{7}, T{8}, T{9}};
+  ProxyIterator out{output.begin()};
+  ProxyIterator out2{output.begin() + 1};
+  ProxyIterator out_end{output.end()};
+
+  T num{2};
+  Proxy<T&> x{num};
+  int count = 1;
+
+  auto unary_pred = [](const Proxy<T&>&) { return true; };
+  auto binary_func = [](const Proxy<T>&, const Proxy<T>&) -> Proxy<T> { return Proxy<T>(T()); };
+  auto gen = [] { return Proxy<T>(T{42}); };
+
+  test(std::ranges::any_of, in, unary_pred);
+  test(std::ranges::all_of, in, unary_pred);
+  test(std::ranges::none_of, in, unary_pred);
+  test(std::ranges::find, in, x);
+  test(std::ranges::find_if, in, unary_pred);
+  test(std::ranges::find_if_not, in, unary_pred);
+  test(std::ranges::find_first_of, in, in2);
+  test(std::ranges::adjacent_find, in);
+  test(std::ranges::mismatch, in, in2);
+  test(std::ranges::equal, in, in2);
+  test(std::ranges::lexicographical_compare, in, in2);
+  test(std::ranges::partition_point, in, unary_pred);
+  test(std::ranges::lower_bound, in, x);
+  test(std::ranges::upper_bound, in, x);
+  test(std::ranges::equal_range, in, x);
+  test(std::ranges::binary_search, in, x);
+
+  test(std::ranges::min_element, in);
+  test(std::ranges::max_element, in);
+  test(std::ranges::minmax_element, in);
+  test(std::ranges::count, in, x);
+  test(std::ranges::count_if, in, unary_pred);
+  test(std::ranges::search, in, in2);
+  test(std::ranges::search_n, in, count, x);
+  test(std::ranges::find_end, in, in2);
+  test(std::ranges::is_partitioned, in, unary_pred);
+  test(std::ranges::is_sorted, in);
+  test(std::ranges::is_sorted_until, in);
+  test(std::ranges::includes, in, in2);
+  test(std::ranges::is_heap, in);
+  test(std::ranges::is_heap_until, in);
+  test(std::ranges::is_permutation, in, in2);
+  test(std::ranges::for_each, in, std::identity{});
+  std::ranges::for_each_n(in.begin(), count, std::identity{});
+  if constexpr (std::copyable<T>) {
+    test(std::ranges::copy, in, out);
+    std::ranges::copy_n(in.begin(), count, out);
+    test(std::ranges::copy_if, in, out, unary_pred);
+    test(std::ranges::copy_backward, in, out_end);
+  }
+  test(std::ranges::move, in, out);
+  test(std::ranges::move_backward, in, out_end);
+  if constexpr (std::copyable<T>) {
+    test(std::ranges::fill, in, x);
+    std::ranges::fill_n(in.begin(), count, x);
+    test(std::ranges::transform, in, out, std::identity{});
+    test(std::ranges::transform, in, in2, out, binary_func);
+  }
+  test(std::ranges::generate, in, gen);
+  std::ranges::generate_n(in.begin(), count, gen);
+  if constexpr (std::copyable<T>) {
+    test(std::ranges::remove_copy, in, out, x);
+    test(std::ranges::remove_copy_if, in, out, unary_pred);
+    test(std::ranges::replace, in, x, x);
+    test(std::ranges::replace_if, in, unary_pred, x);
+    test(std::ranges::replace_copy, in, out, x, x);
+    test(std::ranges::replace_copy_if, in, out, unary_pred, x);
+  }
+  test(std::ranges::swap_ranges, in, in2);
+  if constexpr (std::copyable<T>) {
+    test(std::ranges::reverse_copy, in, out);
+    test_mid(std::ranges::rotate_copy, in, mid, out);
+    test(std::ranges::unique_copy, in, out);
+    test(std::ranges::partition_copy, in, out, out2, unary_pred);
+    test(std::ranges::partial_sort_copy, in, in2);
+    test(std::ranges::merge, in, in2, out);
+    test(std::ranges::set_difference, in, in2, out);
+    test(std::ranges::set_intersection, in, in2, out);
+    test(std::ranges::set_symmetric_difference, in, in2, out);
+    test(std::ranges::set_union, in, in2, out);
+  }
+  test(std::ranges::remove, in, x);
+  test(std::ranges::remove_if, in, unary_pred);
+  test(std::ranges::reverse, in);
+  test_mid(std::ranges::rotate, in, mid);
+  if (!std::is_constant_evaluated()) // `shuffle` isn't `constexpr`.
+    test(std::ranges::shuffle, in, rand_gen());
+  if (!std::is_constant_evaluated()) {
+    if constexpr (std::copyable<T>)
+      test(std::ranges::sample, in, out, count, rand_gen());
+  }
+  test(std::ranges::unique, in);
+  test(std::ranges::partition, in, unary_pred);
+  if (!std::is_constant_evaluated())
+    test(std::ranges::stable_partition, in, unary_pred);
+  test(std::ranges::sort, in);
+  if (!std::is_constant_evaluated())
+    test(std::ranges::stable_sort, in);
+  test_mid(std::ranges::partial_sort, in, mid);
+  test_mid(std::ranges::nth_element, in, mid);
+  if (!std::is_constant_evaluated())
+    test_mid(std::ranges::inplace_merge, in, mid);
+  test(std::ranges::make_heap, in);
+  test(std::ranges::push_heap, in);
+  test(std::ranges::pop_heap, in);
+  test(std::ranges::sort_heap, in);
+  test(std::ranges::prev_permutation, in);
+  test(std::ranges::next_permutation, in);
+
+  // The algorithms that work on uninitialized memory have constraints that prevent proxy iterators from being used with
+  // them.
+}
+
+constexpr bool test_all() {
+  run_tests<int>();
+  run_tests<MoveOnly>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all();
+  static_assert(test_all());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_adl.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_adl.compile.pass.cpp
new file mode 100644
index 0000000..d457baf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_adl.compile.pass.cpp
@@ -0,0 +1,224 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+#include <algorithm>
+#include <cstddef>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+template<class>
+struct ConvertibleToIntegral {
+    TEST_CONSTEXPR operator int() const { return 1; }
+};
+
+struct Tester {
+    using Element = Holder<Incomplete>*;
+    Element data[10] = {};
+};
+
+struct UnaryVoid { TEST_CONSTEXPR_CXX14 void operator()(void*) const {} };
+struct UnaryTrue { TEST_CONSTEXPR bool operator()(void*) const { return true; } };
+struct NullaryValue { TEST_CONSTEXPR std::nullptr_t operator()() const { return nullptr; } };
+struct UnaryTransform { TEST_CONSTEXPR std::nullptr_t operator()(void*) const { return nullptr; } };
+struct BinaryTransform { TEST_CONSTEXPR std::nullptr_t operator()(void*, void*) const { return nullptr; } };
+
+TEST_CONSTEXPR_CXX20 bool all_the_algorithms()
+{
+    Tester t;
+    Tester u;
+    Holder<Incomplete> **first = t.data;
+    Holder<Incomplete> **mid = t.data+5;
+    Holder<Incomplete> **last = t.data+10;
+    Holder<Incomplete> **first2 = u.data;
+    Holder<Incomplete> **mid2 = u.data+5;
+    Holder<Incomplete> **last2 = u.data+10;
+    Tester::Element value = nullptr;
+    ConvertibleToIntegral<Tester::Element> count;
+
+    (void)std::adjacent_find(first, last);
+    (void)std::adjacent_find(first, last, std::equal_to<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::all_of(first, last, UnaryTrue());
+    (void)std::any_of(first, last, UnaryTrue());
+#endif
+    (void)std::binary_search(first, last, value);
+    (void)std::binary_search(first, last, value, std::less<void*>());
+#if TEST_STD_VER > 17
+    (void)std::clamp(value, value, value);
+    (void)std::clamp(value, value, value, std::less<void*>());
+#endif
+    (void)std::copy(first, last, first2);
+    (void)std::copy_backward(first, last, last2);
+    (void)std::copy_n(first, count, first2);
+    (void)std::count(first, last, value);
+    (void)std::count_if(first, last, UnaryTrue());
+    (void)std::distance(first, last);
+    (void)std::equal(first, last, first2);
+    (void)std::equal(first, last, first2, std::equal_to<void*>());
+#if TEST_STD_VER > 11
+    (void)std::equal(first, last, first2, last2);
+    (void)std::equal(first, last, first2, last2, std::equal_to<void*>());
+#endif
+    (void)std::equal_range(first, last, value);
+    (void)std::equal_range(first, last, value, std::less<void*>());
+    (void)std::fill(first, last, value);
+    (void)std::fill_n(first, count, value);
+    (void)std::find(first, last, value);
+    (void)std::find_end(first, last, first2, mid2);
+    (void)std::find_end(first, last, first2, mid2, std::equal_to<void*>());
+    (void)std::find_if(first, last, UnaryTrue());
+    (void)std::find_if_not(first, last, UnaryTrue());
+    (void)std::for_each(first, last, UnaryVoid());
+#if TEST_STD_VER > 14
+    (void)std::for_each_n(first, count, UnaryVoid());
+#endif
+    (void)std::generate(first, last, NullaryValue());
+    (void)std::generate_n(first, count, NullaryValue());
+    (void)std::includes(first, last, first2, last2);
+    (void)std::includes(first, last, first2, last2, std::less<void*>());
+    (void)std::is_heap(first, last);
+    (void)std::is_heap(first, last, std::less<void*>());
+    (void)std::is_heap_until(first, last);
+    (void)std::is_heap_until(first, last, std::less<void*>());
+    (void)std::is_partitioned(first, last, UnaryTrue());
+    (void)std::is_permutation(first, last, first2);
+    (void)std::is_permutation(first, last, first2, std::equal_to<void*>());
+#if TEST_STD_VER > 11
+    (void)std::is_permutation(first, last, first2, last2);
+    (void)std::is_permutation(first, last, first2, last2, std::equal_to<void*>());
+#endif
+    (void)std::is_sorted(first, last);
+    (void)std::is_sorted(first, last, std::less<void*>());
+    (void)std::is_sorted_until(first, last);
+    (void)std::is_sorted_until(first, last, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::inplace_merge(first, mid, last);
+    // RELIES ON ADL SWAP (void)std::inplace_merge(first, mid, last, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::iter_swap(first, mid);
+    (void)std::lexicographical_compare(first, last, first2, last2);
+    (void)std::lexicographical_compare(first, last, first2, last2, std::less<void*>());
+    // TODO: lexicographical_compare_three_way
+    (void)std::lower_bound(first, last, value);
+    (void)std::lower_bound(first, last, value, std::less<void*>());
+    (void)std::make_heap(first, last);
+    (void)std::make_heap(first, last, std::less<void*>());
+    (void)std::max(value, value);
+    (void)std::max(value, value, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::max({ value, value });
+    (void)std::max({ value, value }, std::less<void*>());
+#endif
+    (void)std::max_element(first, last);
+    (void)std::max_element(first, last, std::less<void*>());
+    (void)std::merge(first, mid, mid, last, first2);
+    (void)std::merge(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::min(value, value);
+    (void)std::min(value, value, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::min({ value, value });
+    (void)std::min({ value, value }, std::less<void*>());
+#endif
+    (void)std::min_element(first, last);
+    (void)std::min_element(first, last, std::less<void*>());
+    (void)std::minmax(value, value);
+    (void)std::minmax(value, value, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::minmax({ value, value });
+    (void)std::minmax({ value, value }, std::less<void*>());
+#endif
+    (void)std::minmax_element(first, last);
+    (void)std::minmax_element(first, last, std::less<void*>());
+    (void)std::mismatch(first, last, first2);
+    (void)std::mismatch(first, last, first2, std::equal_to<void*>());
+#if TEST_STD_VER > 11
+    (void)std::mismatch(first, last, first2, last2);
+    (void)std::mismatch(first, last, first2, last2, std::equal_to<void*>());
+#endif
+    (void)std::move(first, last, first2);
+    (void)std::move_backward(first, last, last2);
+    // RELIES ON ADL SWAP (void)std::next_permutation(first, last);
+    // RELIES ON ADL SWAP (void)std::next_permutation(first, last, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::none_of(first, last, UnaryTrue());
+#endif
+    // RELIES ON ADL SWAP (void)std::nth_element(first, mid, last);
+    // RELIES ON ADL SWAP (void)std::nth_element(first, mid, last, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::partial_sort(first, mid, last);
+    // RELIES ON ADL SWAP (void)std::partial_sort(first, mid, last, std::less<void*>());
+    (void)std::partial_sort_copy(first, last, first2, mid2);
+    (void)std::partial_sort_copy(first, last, first2, mid2, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::partition(first, last, UnaryTrue());
+    (void)std::partition_copy(first, last, first2, last2, UnaryTrue());
+    (void)std::partition_point(first, last, UnaryTrue());
+    (void)std::pop_heap(first, last);
+    (void)std::pop_heap(first, last, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::prev_permutation(first, last);
+    // RELIES ON ADL SWAP (void)std::prev_permutation(first, last, std::less<void*>());
+    (void)std::push_heap(first, last);
+    (void)std::push_heap(first, last, std::less<void*>());
+    (void)std::remove(first, last, value);
+    (void)std::remove_copy(first, last, first2, value);
+    (void)std::remove_copy_if(first, last, first2, UnaryTrue());
+    (void)std::remove_if(first, last, UnaryTrue());
+    (void)std::replace(first, last, value, value);
+    (void)std::replace_copy(first, last, first2, value, value);
+    (void)std::replace_copy_if(first, last, first2, UnaryTrue(), value);
+    (void)std::replace_if(first, last, UnaryTrue(), value);
+    // RELIES ON ADL SWAP (void)std::reverse(first, last);
+    (void)std::reverse_copy(first, last, first2);
+    // RELIES ON ADL SWAP (void)std::rotate(first, mid, last);
+    (void)std::rotate_copy(first, mid, last, first2);
+    (void)std::search(first, last, first2, mid2);
+    (void)std::search(first, last, first2, mid2, std::equal_to<void*>());
+    (void)std::search_n(first, last, count, value);
+    (void)std::search_n(first, last, count, value, std::equal_to<void*>());
+    (void)std::set_difference(first, mid, mid, last, first2);
+    (void)std::set_difference(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::set_intersection(first, mid, mid, last, first2);
+    (void)std::set_intersection(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::set_symmetric_difference(first, mid, mid, last, first2);
+    (void)std::set_symmetric_difference(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::set_union(first, mid, mid, last, first2);
+    (void)std::set_union(first, mid, mid, last, first2, std::less<void*>());
+#if TEST_STD_VER > 17
+    (void)std::shift_left(first, last, count);
+    (void)std::shift_right(first, last, count);
+#endif
+    // RELIES ON ADL SWAP (void)std::sort(first, last);
+    // RELIES ON ADL SWAP (void)std::sort(first, last, std::less<void*>());
+    (void)std::sort_heap(first, last);
+    (void)std::sort_heap(first, last, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::stable_partition(first, last, UnaryTrue());
+    // RELIES ON ADL SWAP (void)std::stable_sort(first, last);
+    // RELIES ON ADL SWAP (void)std::stable_sort(first, last, std::less<void*>());
+    // RELIES ON ADL SWAP (void)std::swap_ranges(first, last, first2);
+    (void)std::transform(first, last, first2, UnaryTransform());
+    (void)std::transform(first, mid, mid, first2, BinaryTransform());
+    (void)std::unique(first, last);
+    (void)std::unique(first, last, std::equal_to<void*>());
+    (void)std::unique_copy(first, last, first2);
+    (void)std::unique_copy(first, last, first2, std::equal_to<void*>());
+    (void)std::upper_bound(first, last, value);
+    (void)std::upper_bound(first, last, value, std::less<void*>());
+
+    return true;
+}
+
+void test()
+{
+    all_the_algorithms();
+#if TEST_STD_VER > 17
+    static_assert(all_the_algorithms());
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_adl_on_new.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_adl_on_new.pass.cpp
new file mode 100644
index 0000000..5dcfde3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_adl_on_new.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+
+#include <algorithm>
+#include <functional>
+
+#include "test_macros.h"
+
+struct A {
+    int i = 0;
+    bool operator<(const A& rhs) const { return i < rhs.i; }
+    static bool isEven(const A& a) { return a.i % 2 == 0; }
+};
+
+void *operator new(size_t, A*) = delete;
+
+int main(int, char**)
+{
+    A a[4] = {};
+    std::sort(a, a+4);
+    std::sort(a, a+4, std::less<A>());
+    std::partition(a, a+4, A::isEven);
+    std::stable_sort(a, a+4);
+    std::stable_sort(a, a+4, std::less<A>());
+    std::stable_partition(a, a+4, A::isEven);
+    std::inplace_merge(a, a+2, a+4);
+    std::inplace_merge(a, a+2, a+4, std::less<A>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_proxy_iterators_lifetime_bugs.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_proxy_iterators_lifetime_bugs.pass.cpp
new file mode 100644
index 0000000..166806e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/robust_against_proxy_iterators_lifetime_bugs.pass.cpp
@@ -0,0 +1,771 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Making this test file support C++03 is difficult; the lack of support for initializer lists is a major issue.
+// UNSUPPORTED: c++03
+
+// <algorithm>
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <random>
+#include <set>
+
+#include "test_macros.h"
+
+// This file contains checks for lifetime issues across all the classic algorithms. It uses two complementary
+// approaches:
+// - runtime checks using a proxy iterator that tracks the lifetime of itself and its objects to catch potential
+//   lifetime issues;
+// - `constexpr` checks using a `constexpr`-friendly proxy iterator that catch undefined behavior.
+
+// A random-access proxy iterator that tracks the lifetime of itself and its `value_type` and `reference` objects to
+// prevent potential lifetime issues in algorithms.
+//
+// This class cannot be `constexpr` because its cache is a static variable. The cache cannot be provided as
+// a constructor parameter because `LifetimeIterator` has to be default-constructible.
+class LifetimeIterator {
+  // The cache simply tracks addresses of the local variables.
+  class LifetimeCache {
+    std::set<const void*> cache_;
+
+  public:
+    bool contains(const void* ptr) const { return cache_.find(ptr) != cache_.end(); }
+
+    void insert(const void* ptr) {
+      assert(!contains(ptr));
+      cache_.insert(ptr);
+    }
+
+    void erase(const void* ptr) {
+      assert(contains(ptr));
+      cache_.erase(ptr);
+    }
+  };
+
+ public:
+  struct Value {
+    int i_;
+    bool moved_from_ = false; // Check for double moves and reads after moving.
+
+    Value() { lifetime_cache.insert(this); }
+    Value(int i) : i_(i) { lifetime_cache.insert(this); }
+    ~Value() { lifetime_cache.erase(this); }
+
+    Value(const Value& rhs) : i_(rhs.i_) {
+      assert(lifetime_cache.contains(&rhs));
+      assert(!rhs.moved_from_);
+
+      lifetime_cache.insert(this);
+    }
+
+    Value(Value&& rhs) noexcept : i_(rhs.i_) {
+      assert(lifetime_cache.contains(&rhs));
+
+      assert(!rhs.moved_from_);
+      rhs.moved_from_ = true;
+
+      // It's ok if it throws -- since it's a test, terminating the program is acceptable.
+      lifetime_cache.insert(this);
+    }
+
+    Value& operator=(const Value& rhs) {
+      assert(lifetime_cache.contains(this) && lifetime_cache.contains(&rhs));
+      assert(!rhs.moved_from_);
+
+      i_ = rhs.i_;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    Value& operator=(Value&& rhs) noexcept {
+      assert(lifetime_cache.contains(this) && lifetime_cache.contains(&rhs));
+
+      assert(!rhs.moved_from_);
+      rhs.moved_from_ = true;
+
+      i_ = rhs.i_;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    friend bool operator<(const Value& lhs, const Value& rhs) {
+      assert(lifetime_cache.contains(&lhs) && lifetime_cache.contains(&rhs));
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+
+      return lhs.i_ < rhs.i_;
+    }
+
+    friend bool operator==(const Value& lhs, const Value& rhs) {
+      assert(lifetime_cache.contains(&lhs) && lifetime_cache.contains(&rhs));
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+
+      return lhs.i_ == rhs.i_;
+    }
+
+  };
+
+  struct Reference {
+    Value* v_;
+    bool moved_from_ = false; // Check for double moves and reads after moving.
+
+    Reference(Value& v) : v_(&v) {
+      lifetime_cache.insert(this);
+    }
+
+    ~Reference() {
+      lifetime_cache.erase(this);
+    }
+
+    Reference(const Reference& rhs) : v_(rhs.v_) {
+      assert(lifetime_cache.contains(&rhs));
+      assert(!rhs.moved_from_);
+
+      lifetime_cache.insert(this);
+    }
+
+    Reference(Reference&& rhs) noexcept : v_(rhs.v_) {
+      assert(lifetime_cache.contains(&rhs));
+
+      assert(!rhs.moved_from_);
+      rhs.moved_from_ = true;
+
+      lifetime_cache.insert(this);
+    }
+
+    Reference& operator=(const Reference& rhs) {
+      assert(lifetime_cache.contains(this) && lifetime_cache.contains(&rhs));
+      assert(!rhs.moved_from_);
+
+      v_ = rhs.v_;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    Reference& operator=(Reference&& rhs) noexcept {
+      assert(lifetime_cache.contains(this) && lifetime_cache.contains(&rhs));
+
+      assert(!rhs.moved_from_);
+      rhs.moved_from_ = true;
+
+      v_ = rhs.v_;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    operator Value() const {
+      assert(lifetime_cache.contains(this));
+      assert(!moved_from_);
+
+      return *v_;
+    }
+
+    Reference& operator=(Value v) {
+      assert(lifetime_cache.contains(this));
+      assert(!moved_from_);
+
+      *v_ = v;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    friend bool operator<(const Reference& lhs, const Reference& rhs) {
+      assert(lifetime_cache.contains(&lhs) && lifetime_cache.contains(&rhs));
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+
+      return *lhs.v_ < *rhs.v_;
+    }
+
+    friend bool operator==(const Reference& lhs, const Reference& rhs) {
+      assert(lifetime_cache.contains(&lhs) && lifetime_cache.contains(&rhs));
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+
+      return *lhs.v_ == *rhs.v_;
+    }
+
+    friend void swap(Reference lhs, Reference rhs) {
+      assert(lifetime_cache.contains(&lhs) && lifetime_cache.contains(&rhs));
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+
+      std::swap(*(lhs.v_), *(rhs.v_));
+    }
+  };
+
+  using difference_type   = int;
+  using value_type        = Value;
+  using reference         = Reference;
+  using pointer           = void;
+  using iterator_category = std::random_access_iterator_tag;
+
+  Value* ptr_ = nullptr;
+  bool moved_from_ = false; // Check for double moves and reads after moving.
+
+  LifetimeIterator() = default;
+  LifetimeIterator(Value* ptr) : ptr_(ptr) {}
+
+  LifetimeIterator(const LifetimeIterator& rhs) : ptr_(rhs.ptr_) {
+    assert(!rhs.moved_from_);
+  }
+
+  LifetimeIterator& operator=(const LifetimeIterator& rhs) {
+    assert(!rhs.moved_from_);
+
+    ptr_ = rhs.ptr_;
+    moved_from_ = false;
+
+    return *this;
+  }
+
+  LifetimeIterator(LifetimeIterator&& rhs) noexcept : ptr_(rhs.ptr_) {
+    assert(!rhs.moved_from_);
+    rhs.moved_from_ = true;
+    rhs.ptr_ = nullptr;
+  }
+
+  LifetimeIterator& operator=(LifetimeIterator&& rhs) noexcept {
+    assert(!rhs.moved_from_);
+    rhs.moved_from_ = true;
+    moved_from_ = false;
+
+    ptr_ = rhs.ptr_;
+    rhs.ptr_ = nullptr;
+
+    return *this;
+  }
+
+  Reference operator*() const {
+    assert(!moved_from_);
+    return Reference(*ptr_);
+  }
+
+  LifetimeIterator& operator++() {
+    assert(!moved_from_);
+
+    ++ptr_;
+    return *this;
+  }
+
+  LifetimeIterator operator++(int) {
+    assert(!moved_from_);
+
+    auto tmp = *this;
+    ++*this;
+    return tmp;
+  }
+
+  friend bool operator==(const LifetimeIterator& lhs, const LifetimeIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ == rhs.ptr_;
+  }
+  friend bool operator!=(const LifetimeIterator& lhs, const LifetimeIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ != rhs.ptr_;
+  }
+
+  LifetimeIterator& operator--() {
+    assert(!moved_from_);
+
+    --ptr_;
+    return *this;
+  }
+
+  LifetimeIterator operator--(int) {
+    assert(!moved_from_);
+
+    auto tmp = *this;
+    --*this;
+    return tmp;
+  }
+
+  LifetimeIterator& operator+=(difference_type n) {
+    assert(!moved_from_);
+
+    ptr_ += n;
+    return *this;
+  }
+
+  LifetimeIterator& operator-=(difference_type n) {
+    assert(!moved_from_);
+
+    ptr_ -= n;
+    return *this;
+  }
+
+  Reference operator[](difference_type i) const {
+    assert(!moved_from_);
+    return Reference(*(ptr_ + i));
+  }
+
+  friend bool operator<(const LifetimeIterator& lhs, const LifetimeIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ < rhs.ptr_;
+  }
+
+  friend bool operator>(const LifetimeIterator& lhs, const LifetimeIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ > rhs.ptr_;
+  }
+
+  friend bool operator<=(const LifetimeIterator& lhs, const LifetimeIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ <= rhs.ptr_;
+  }
+
+  friend bool operator>=(const LifetimeIterator& lhs, const LifetimeIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ >= rhs.ptr_;
+  }
+
+  friend LifetimeIterator operator+(const LifetimeIterator& lhs, difference_type n) {
+    assert(!lhs.moved_from_);
+    return LifetimeIterator(lhs.ptr_ + n);
+  }
+
+  friend LifetimeIterator operator+(difference_type n, const LifetimeIterator& lhs) {
+    assert(!lhs.moved_from_);
+    return LifetimeIterator(n + lhs.ptr_);
+  }
+
+  friend LifetimeIterator operator-(const LifetimeIterator& lhs, difference_type n) {
+    assert(!lhs.moved_from_);
+    return LifetimeIterator(lhs.ptr_ - n);
+  }
+
+  friend difference_type operator-(LifetimeIterator lhs, LifetimeIterator rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return static_cast<int>(lhs.ptr_ - rhs.ptr_);
+  }
+
+  static LifetimeCache lifetime_cache;
+};
+
+LifetimeIterator::LifetimeCache LifetimeIterator::lifetime_cache;
+
+#if TEST_STD_VER > 17
+// A constexpr-friendly proxy iterator to check for undefined behavior in algorithms (since undefined behavior is
+// statically caught in `constexpr` context).
+class ConstexprIterator {
+ public:
+  struct Reference {
+    int* v_;
+    bool moved_from_ = false; // Check for double moves and reads after moving.
+
+    constexpr Reference(int& v) : v_(&v) { }
+
+    constexpr Reference(const Reference& rhs) = default;
+    constexpr Reference& operator=(const Reference& rhs) {
+      assert(!rhs.moved_from_);
+      v_ = rhs.v_;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    constexpr Reference(Reference&& rhs) noexcept : v_(rhs.v_) {
+      assert(!rhs.moved_from_);
+      rhs.moved_from_ = true;
+    }
+
+    constexpr Reference& operator=(Reference&& rhs) noexcept {
+      assert(!rhs.moved_from_);
+      rhs.moved_from_ = true;
+      moved_from_ = false;
+
+      v_ = rhs.v_;
+      return *this;
+    }
+
+    constexpr operator int() const {
+      assert(!moved_from_);
+      return *v_;
+    }
+
+    constexpr Reference& operator=(int v) {
+      *v_ = v;
+      moved_from_ = false;
+
+      return *this;
+    }
+
+    friend constexpr bool operator<(const Reference& lhs, const Reference& rhs) {
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+      return *lhs.v_ < *rhs.v_;
+    }
+
+    friend constexpr bool operator==(const Reference& lhs, const Reference& rhs) {
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+      return *lhs.v_ == *rhs.v_;
+    }
+
+    friend constexpr void swap(Reference lhs, Reference rhs) {
+      assert(!lhs.moved_from_ && !rhs.moved_from_);
+      std::swap(*(lhs.v_), *(rhs.v_));
+    }
+  };
+
+  using difference_type   = int;
+  using value_type        = int;
+  using reference         = Reference;
+  using pointer           = void;
+  using iterator_category = std::random_access_iterator_tag;
+
+  int* ptr_ = nullptr;
+  bool moved_from_ = false; // Check for double moves and reads after moving.
+
+  constexpr ConstexprIterator() = default;
+  constexpr ConstexprIterator(int* ptr) : ptr_(ptr) {}
+
+  constexpr ConstexprIterator(const ConstexprIterator& rhs) : ptr_(rhs.ptr_) {
+    assert(!rhs.moved_from_);
+  }
+
+  constexpr ConstexprIterator& operator=(const ConstexprIterator& rhs) {
+    assert(!rhs.moved_from_);
+
+    ptr_ = rhs.ptr_;
+    moved_from_ = false;
+
+    return *this;
+  }
+
+  constexpr ConstexprIterator(ConstexprIterator&& rhs) noexcept : ptr_(rhs.ptr_) {
+    assert(!rhs.moved_from_);
+    rhs.moved_from_ = true;
+    rhs.ptr_ = nullptr;
+  }
+
+  constexpr ConstexprIterator& operator=(ConstexprIterator&& rhs) noexcept {
+    assert(!rhs.moved_from_);
+    rhs.moved_from_ = true;
+    moved_from_ = false;
+
+    ptr_ = rhs.ptr_;
+    rhs.ptr_ = nullptr;
+
+    return *this;
+  }
+
+  constexpr Reference operator*() const {
+    assert(!moved_from_);
+    return Reference(*ptr_);
+  }
+
+  constexpr ConstexprIterator& operator++() {
+    assert(!moved_from_);
+
+    ++ptr_;
+    return *this;
+  }
+
+  constexpr ConstexprIterator operator++(int) {
+    assert(!moved_from_);
+
+    auto tmp = *this;
+    ++*this;
+    return tmp;
+  }
+
+  friend constexpr bool operator==(const ConstexprIterator& lhs, const ConstexprIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ == rhs.ptr_;
+  }
+
+  friend constexpr bool operator!=(const ConstexprIterator& lhs, const ConstexprIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ != rhs.ptr_;
+  }
+
+  constexpr ConstexprIterator& operator--() {
+    assert(!moved_from_);
+
+    --ptr_;
+    return *this;
+  }
+
+  constexpr ConstexprIterator operator--(int) {
+    assert(!moved_from_);
+
+    auto tmp = *this;
+    --*this;
+    return tmp;
+  }
+
+  constexpr ConstexprIterator& operator+=(difference_type n) {
+    assert(!moved_from_);
+
+    ptr_ += n;
+    return *this;
+  }
+
+  constexpr ConstexprIterator& operator-=(difference_type n) {
+    assert(!moved_from_);
+
+    ptr_ -= n;
+    return *this;
+  }
+
+  constexpr Reference operator[](difference_type i) const {
+    return Reference(*(ptr_ + i));
+  }
+
+  friend constexpr auto operator<=>(const ConstexprIterator& lhs, const ConstexprIterator& rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return lhs.ptr_ <=> rhs.ptr_;
+  }
+
+  friend constexpr ConstexprIterator operator+(const ConstexprIterator& lhs, difference_type n) {
+    assert(!lhs.moved_from_);
+    return ConstexprIterator(lhs.ptr_ + n);
+  }
+
+  friend constexpr ConstexprIterator operator+(difference_type n, const ConstexprIterator& lhs) {
+    assert(!lhs.moved_from_);
+    return ConstexprIterator(n + lhs.ptr_);
+  }
+
+  friend constexpr ConstexprIterator operator-(const ConstexprIterator& lhs, difference_type n) {
+    assert(!lhs.moved_from_);
+    return ConstexprIterator(lhs.ptr_ - n);
+  }
+
+  friend constexpr difference_type operator-(ConstexprIterator lhs, ConstexprIterator rhs) {
+    assert(!lhs.moved_from_ && !rhs.moved_from_);
+    return static_cast<int>(lhs.ptr_ - rhs.ptr_);
+  }
+};
+
+#endif // TEST_STD_VER > 17
+
+template <class T, size_t N = 32>
+class Input {
+  using Array = std::array<T, N>;
+
+  size_t size_ = 0;
+  Array values_ = {};
+
+public:
+  template <size_t N2>
+  TEST_CONSTEXPR_CXX20 Input(std::array<T, N2> from) {
+    static_assert(N2 <= N, "");
+
+    std::copy(from.begin(), from.end(), begin());
+    size_ = N2;
+  }
+
+  TEST_CONSTEXPR_CXX20 typename Array::iterator begin() { return values_.begin(); }
+  TEST_CONSTEXPR_CXX20 typename Array::iterator end() { return values_.begin() + size_; }
+  TEST_CONSTEXPR_CXX20 size_t size() const { return size_; }
+};
+
+// TODO: extend `Value` and `Reference` so that it's possible to pass plain integers to all the algorithms.
+
+// Several generic inputs that are useful for many algorithms. Provides two unsorted sequences with and without
+// duplicates, with positive and negative values; and a few corner cases, like an empty sequence, a sequence of all
+// duplicates, and so on.
+template <class Iter>
+TEST_CONSTEXPR_CXX20 std::array<Input<typename Iter::value_type>, 8> get_simple_in() {
+  using T = typename Iter::value_type;
+  std::array<Input<T>, 8> result = {
+    Input<T>({std::array<T, 0>{ }}),
+    Input<T>({std::array<T, 1>{ T{1} }}),
+    Input<T>({std::array<T, 1>{ T{-1} }}),
+    Input<T>({std::array<T, 2>{ T{-1}, {1} }}),
+    Input<T>({std::array<T, 3>{ T{1}, {1}, {1} }}),
+    Input<T>({std::array<T, 3>{ T{-1}, {-1}, {-1} }}),
+    Input<T>({std::array<T, 9>{ T{-8}, {6}, {3}, {2}, {1}, {5}, {-4}, {-9}, {3} }}),
+    Input<T>({std::array<T, 9>{ T{-8}, {3}, {3}, {2}, {5}, {-4}, {-4}, {-4}, {1} }}),
+  };
+  return result;
+}
+
+// Sorted inputs of varying lengths.
+template <class Iter>
+TEST_CONSTEXPR_CXX20 std::array<Input<typename Iter::value_type>, 8> get_sorted_in() {
+  using T = typename Iter::value_type;
+  std::array<Input<T>, 8> result = {
+    Input<T>({std::array<T, 0>{ }}),
+    Input<T>({std::array<T, 1>{ T{1} }}),
+    Input<T>({std::array<T, 1>{ T{-1} }}),
+    Input<T>({std::array<T, 2>{ T{-1}, {1} }}),
+    Input<T>({std::array<T, 3>{ T{1}, {1}, {1} }}),
+    Input<T>({std::array<T, 3>{ T{-1}, {-1}, {-1} }}),
+    Input<T>({std::array<T, 8>{ T{-8}, {-5}, {-3}, {-1}, {1}, {4}, {5}, {9} }}),
+    Input<T>({std::array<T, 11>{ T{-8}, {-5}, {-3}, {-3}, {-1}, {1}, {4}, {5}, {5}, {9}, {9} }}),
+  };
+  return result;
+}
+
+// Inputs for testing `std::sort`. These have been manually verified to exercise all internal functions in `std::sort`
+// except the branchless sort ones (which can't be triggered with proxy arrays).
+template <class Iter>
+TEST_CONSTEXPR_CXX20 std::array<Input<typename Iter::value_type>, 8> get_sort_test_in() {
+  using T = typename Iter::value_type;
+  std::array<Input<T>, 8> result = {
+    Input<T>({std::array<T, 0>{ }}),
+    Input<T>({std::array<T, 1>{ T{1} }}),
+    Input<T>({std::array<T, 1>{ T{-1} }}),
+    Input<T>({std::array<T, 2>{ T{-1}, {1} }}),
+    Input<T>({std::array<T, 3>{ T{1}, {1}, {1} }}),
+    Input<T>({std::array<T, 3>{ T{-1}, {-1}, {-1} }}),
+    Input<T>({std::array<T, 8>{ T{-8}, {-5}, {-3}, {-1}, {1}, {4}, {5}, {9} }}),
+    Input<T>({std::array<T, 11>{ T{-8}, {-5}, {-3}, {-3}, {-1}, {1}, {4}, {5}, {5}, {9}, {9} }}),
+  };
+  return result;
+}
+
+template <class Input, size_t N, class Func>
+TEST_CONSTEXPR_CXX20 void test(std::array<Input, N> inputs, Func func) {
+  for (auto&& in : inputs) {
+    func(in.begin(), in.end());
+  }
+}
+
+template <class Input, size_t N, class Func>
+TEST_CONSTEXPR_CXX20 void test_n(std::array<Input, N> inputs, Func func) {
+  for (auto&& in : inputs) {
+    func(in.begin(), in.size());
+  }
+}
+
+constexpr int to_int(int x) { return x; }
+int to_int(LifetimeIterator::Value x) { return x.i_; }
+
+std::mt19937 rand_gen() { return std::mt19937(); }
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 bool test() {
+  using T = typename Iter::value_type;
+
+  auto is_neg = [](const T& val) { return to_int(val) < 0; };
+  auto gen = [] { return T{42}; };
+  auto identity = [] (T val) -> T { return val; };
+
+  constexpr int N = 32;
+  std::array<T, N> output;
+  auto out = output.begin();
+  T x{1};
+  T y{3};
+
+  auto simple_in = get_simple_in<Iter>();
+  auto sorted_in = get_sorted_in<Iter>();
+  auto sort_test_in = get_sort_test_in<Iter>();
+
+  using I = Iter;
+
+  test(simple_in, [&](I b, I e) { (void) std::any_of(b, e, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::all_of(b, e, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::none_of(b, e, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::find(b, e, T{1}); });
+  test(simple_in, [&](I b, I e) { (void) std::find_if(b, e, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::find_if_not(b, e, is_neg); });
+  // TODO: find_first_of
+  test(simple_in, [&](I b, I e) { (void) std::adjacent_find(b, e); });
+  // TODO: mismatch
+  // TODO: equal
+  // TODO: lexicographical_compare
+  // TODO: partition_point
+  test(sorted_in, [&](I b, I e) { (void) std::lower_bound(b, e, x); });
+  test(sorted_in, [&](I b, I e) { (void) std::upper_bound(b, e, x); });
+  test(sorted_in, [&](I b, I e) { (void) std::equal_range(b, e, x); });
+  test(sorted_in, [&](I b, I e) { (void) std::binary_search(b, e, x); });
+  // `min`, `max` and `minmax` don't use iterators.
+  test(simple_in, [&](I b, I e) { (void) std::min_element(b, e); });
+  test(simple_in, [&](I b, I e) { (void) std::max_element(b, e); });
+  test(simple_in, [&](I b, I e) { (void) std::minmax_element(b, e); });
+  test(simple_in, [&](I b, I e) { (void) std::count(b, e, x); });
+  test(simple_in, [&](I b, I e) { (void) std::count_if(b, e, is_neg); });
+  // TODO: search
+  // TODO: search_n
+  // TODO: find_end
+  // TODO: is_partitioned
+  // TODO: is_sorted
+  // TODO: is_sorted_until
+  // TODO: includes
+  // TODO: is_heap
+  // TODO: is_heap_until
+  // `clamp` doesn't use iterators.
+  // TODO: is_permutation
+  test(simple_in, [&](I b, I e) { (void) std::for_each(b, e, is_neg); });
+#if TEST_STD_VER > 14
+  test_n(simple_in, [&](I b, size_t n) { (void) std::for_each_n(b, n, is_neg); });
+#endif
+  test(simple_in, [&](I b, I e) { (void) std::copy(b, e, out); });
+  test_n(simple_in, [&](I b, size_t n) { (void) std::copy_n(b, n, out); });
+  test(simple_in, [&](I b, I e) { (void) std::copy_backward(b, e, out + N); });
+  test(simple_in, [&](I b, I e) { (void) std::copy_if(b, e, out, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::move(b, e, out); });
+  test(simple_in, [&](I b, I e) { (void) std::move_backward(b, e, out + N); });
+  test(simple_in, [&](I b, I e) { (void) std::transform(b, e, out, identity); });
+  test(simple_in, [&](I b, I e) { (void) std::generate(b, e, gen); });
+  test_n(simple_in, [&](I b, size_t n) { (void) std::generate_n(b, n, gen); });
+  test(simple_in, [&](I b, I e) { (void) std::remove_copy(b, e, out, x); });
+  test(simple_in, [&](I b, I e) { (void) std::remove_copy_if(b, e, out, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::replace(b, e, x, y); });
+  test(simple_in, [&](I b, I e) { (void) std::replace_if(b, e, is_neg, y); });
+  test(simple_in, [&](I b, I e) { (void) std::replace_copy(b, e, out, x, y); });
+  test(simple_in, [&](I b, I e) { (void) std::replace_copy_if(b, e, out, is_neg, y); });
+  // TODO: swap_ranges
+  test(simple_in, [&](I b, I e) { (void) std::reverse_copy(b, e, out); });
+  // TODO: rotate_copy
+  // TODO: sample
+  // TODO: unique_copy
+  // TODO: partition_copy
+  // TODO: partial_sort_copy
+  // TODO: merge
+  // TODO: set_difference
+  // TODO: set_intersection
+  // TODO: set_symmetric_difference
+  // TODO: set_union
+  test(simple_in, [&](I b, I e) { (void) std::remove(b, e, x); });
+  test(simple_in, [&](I b, I e) { (void) std::remove_if(b, e, is_neg); });
+  test(simple_in, [&](I b, I e) { (void) std::reverse(b, e); });
+  // TODO: rotate
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    test(simple_in, [&](I b, I e) { (void) std::shuffle(b, e, rand_gen()); });
+  // TODO: unique
+  test(simple_in, [&](I b, I e) { (void) std::partition(b, e, is_neg); });
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    test(simple_in, [&](I b, I e) { (void) std::stable_partition(b, e, is_neg); });
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    test(sort_test_in, [&](I b, I e) { (void) std::sort(b, e); });
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    test(sort_test_in, [&](I b, I e) { (void) std::stable_sort(b, e); });
+  // TODO: partial_sort
+  // TODO: nth_element
+  // TODO: inplace_merge
+  test(simple_in, [&](I b, I e) { (void) std::make_heap(b, e); });
+  // TODO: push_heap
+  // TODO: pop_heap
+  // TODO: sort_heap
+  test(simple_in, [&](I b, I e) { (void) std::prev_permutation(b, e); });
+  test(simple_in, [&](I b, I e) { (void) std::next_permutation(b, e); });
+
+  // TODO: algorithms in `<numeric>`
+  // TODO: algorithms in `<memory>`
+
+  return true;
+}
+
+void test_all() {
+  test<LifetimeIterator>();
+#if TEST_STD_VER > 17 // Most algorithms are only `constexpr` starting from C++20.
+  static_assert(test<ConstexprIterator>());
+#endif
+}
+
+int main(int, char**) {
+  test_all();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/algorithms/robust_re_difference_type.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/algorithms/robust_re_difference_type.compile.pass.cpp
new file mode 100644
index 0000000..c060f46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/algorithms/robust_re_difference_type.compile.pass.cpp
@@ -0,0 +1,259 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <algorithm>
+//   In the description of the algorithms,
+//   given an iterator a whose difference type is D,
+//   and an expression n of integer-like type other than cv D,
+//   the semantics of a + n and a - n are, respectively,
+//   those of a + D(n) and a - D(n).
+
+#include <algorithm>
+#include <cstddef>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+
+// This iterator rejects expressions like (a + n) and (a - n)
+// whenever n is of any type other than difference_type.
+//
+template<class It, class DifferenceType>
+class PickyIterator {
+    It it_;
+public:
+    using iterator_category = std::random_access_iterator_tag;
+    using value_type = typename std::iterator_traits<It>::value_type;
+    using difference_type = DifferenceType;
+    using pointer = It;
+    using reference = typename std::iterator_traits<It>::reference;
+
+    TEST_CONSTEXPR_CXX14 PickyIterator() = default;
+    TEST_CONSTEXPR_CXX14 explicit PickyIterator(It it) : it_(it) {}
+    TEST_CONSTEXPR_CXX14 reference operator*() const {return *it_;}
+    TEST_CONSTEXPR_CXX14 pointer operator->() const {return it_;}
+    TEST_CONSTEXPR_CXX14 reference operator[](difference_type n) const {return it_[n];}
+
+    friend TEST_CONSTEXPR_CXX14 bool operator==(PickyIterator a, PickyIterator b) { return a.it_ == b.it_; }
+    friend TEST_CONSTEXPR_CXX14 bool operator!=(PickyIterator a, PickyIterator b) { return a.it_ != b.it_; }
+    friend TEST_CONSTEXPR_CXX14 bool operator<(PickyIterator a, PickyIterator b) { return a.it_ < b.it_; }
+    friend TEST_CONSTEXPR_CXX14 bool operator>(PickyIterator a, PickyIterator b) { return a.it_ > b.it_; }
+    friend TEST_CONSTEXPR_CXX14 bool operator<=(PickyIterator a, PickyIterator b) { return a.it_ <= b.it_; }
+    friend TEST_CONSTEXPR_CXX14 bool operator>=(PickyIterator a, PickyIterator b) { return a.it_ >= b.it_; }
+
+    TEST_CONSTEXPR_CXX14 PickyIterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 PickyIterator operator++(int) {auto tmp = *this; ++(*this); return tmp;}
+    TEST_CONSTEXPR_CXX14 PickyIterator& operator--() {--it_; return *this;}
+    TEST_CONSTEXPR_CXX14 PickyIterator operator--(int) {auto tmp = *this; --(*this); return tmp;}
+
+    TEST_CONSTEXPR_CXX14 PickyIterator& operator+=(difference_type n) {it_ += n; return *this;}
+    TEST_CONSTEXPR_CXX14 PickyIterator& operator-=(difference_type n) {it_ -= n; return *this;}
+    friend TEST_CONSTEXPR_CXX14 PickyIterator operator+(PickyIterator it, difference_type n) {it += n; return it;}
+    friend TEST_CONSTEXPR_CXX14 PickyIterator operator+(difference_type n, PickyIterator it) {it += n; return it;}
+    friend TEST_CONSTEXPR_CXX14 PickyIterator operator-(PickyIterator it, difference_type n) {it -= n; return it;}
+    friend TEST_CONSTEXPR_CXX14 difference_type operator-(PickyIterator it, PickyIterator jt) {return it.it_ - jt.it_;}
+
+    template<class X> void operator+=(X) = delete;
+    template<class X> void operator-=(X) = delete;
+    template<class X> friend void operator+(PickyIterator, X) = delete;
+    template<class X> friend void operator+(X, PickyIterator) = delete;
+    template<class X> friend void operator-(PickyIterator, X) = delete;
+};
+
+struct UnaryVoid { TEST_CONSTEXPR_CXX14 void operator()(void*) const {} };
+struct UnaryTrue { TEST_CONSTEXPR bool operator()(void*) const { return true; } };
+struct NullaryValue { TEST_CONSTEXPR std::nullptr_t operator()() const { return nullptr; } };
+struct UnaryTransform { TEST_CONSTEXPR std::nullptr_t operator()(void*) const { return nullptr; } };
+struct BinaryTransform { TEST_CONSTEXPR std::nullptr_t operator()(void*, void*) const { return nullptr; } };
+
+TEST_CONSTEXPR_CXX20 bool all_the_algorithms()
+{
+    void *a[10] = {};
+    void *b[10] = {};
+    auto first = PickyIterator<void**, long>(a);
+    auto mid = PickyIterator<void**, long>(a+5);
+    auto last = PickyIterator<void**, long>(a+10);
+    auto first2 = PickyIterator<void**, long long>(b);
+    auto mid2 = PickyIterator<void**, long long>(b+5);
+    auto last2 = PickyIterator<void**, long long>(b+10);
+    void *value = nullptr;
+    int count = 1;
+
+    (void)std::adjacent_find(first, last);
+    (void)std::adjacent_find(first, last, std::equal_to<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::all_of(first, last, UnaryTrue());
+    (void)std::any_of(first, last, UnaryTrue());
+#endif
+    (void)std::binary_search(first, last, value);
+    (void)std::binary_search(first, last, value, std::less<void*>());
+#if TEST_STD_VER > 17
+    (void)std::clamp(value, value, value);
+    (void)std::clamp(value, value, value, std::less<void*>());
+#endif
+    (void)std::copy(first, last, first2);
+    (void)std::copy_backward(first, last, last2);
+    (void)std::copy_n(first, count, first2);
+    (void)std::count(first, last, value);
+    (void)std::count_if(first, last, UnaryTrue());
+    (void)std::distance(first, last);
+    (void)std::equal(first, last, first2);
+    (void)std::equal(first, last, first2, std::equal_to<void*>());
+#if TEST_STD_VER > 11
+    (void)std::equal(first, last, first2, last2);
+    (void)std::equal(first, last, first2, last2, std::equal_to<void*>());
+#endif
+    (void)std::equal_range(first, last, value);
+    (void)std::equal_range(first, last, value, std::less<void*>());
+    (void)std::fill(first, last, value);
+    (void)std::fill_n(first, count, value);
+    (void)std::find(first, last, value);
+    (void)std::find_end(first, last, first2, mid2);
+    (void)std::find_end(first, last, first2, mid2, std::equal_to<void*>());
+    (void)std::find_if(first, last, UnaryTrue());
+    (void)std::find_if_not(first, last, UnaryTrue());
+    (void)std::for_each(first, last, UnaryVoid());
+#if TEST_STD_VER > 14
+    (void)std::for_each_n(first, count, UnaryVoid());
+#endif
+    (void)std::generate(first, last, NullaryValue());
+    (void)std::generate_n(first, count, NullaryValue());
+    (void)std::includes(first, last, first2, last2);
+    (void)std::includes(first, last, first2, last2, std::less<void*>());
+    (void)std::is_heap(first, last);
+    (void)std::is_heap(first, last, std::less<void*>());
+    (void)std::is_heap_until(first, last);
+    (void)std::is_heap_until(first, last, std::less<void*>());
+    (void)std::is_partitioned(first, last, UnaryTrue());
+    (void)std::is_permutation(first, last, first2);
+    (void)std::is_permutation(first, last, first2, std::equal_to<void*>());
+#if TEST_STD_VER > 11
+    (void)std::is_permutation(first, last, first2, last2);
+    (void)std::is_permutation(first, last, first2, last2, std::equal_to<void*>());
+#endif
+    (void)std::is_sorted(first, last);
+    (void)std::is_sorted(first, last, std::less<void*>());
+    (void)std::is_sorted_until(first, last);
+    (void)std::is_sorted_until(first, last, std::less<void*>());
+    if (!TEST_IS_CONSTANT_EVALUATED) (void)std::inplace_merge(first, mid, last);
+    if (!TEST_IS_CONSTANT_EVALUATED) (void)std::inplace_merge(first, mid, last, std::less<void*>());
+    (void)std::iter_swap(first, mid);
+    (void)std::lexicographical_compare(first, last, first2, last2);
+    (void)std::lexicographical_compare(first, last, first2, last2, std::less<void*>());
+    // TODO: lexicographical_compare_three_way
+    (void)std::lower_bound(first, last, value);
+    (void)std::lower_bound(first, last, value, std::less<void*>());
+    (void)std::make_heap(first, last);
+    (void)std::make_heap(first, last, std::less<void*>());
+    (void)std::max(value, value);
+    (void)std::max(value, value, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::max({ value, value });
+    (void)std::max({ value, value }, std::less<void*>());
+#endif
+    (void)std::max_element(first, last);
+    (void)std::max_element(first, last, std::less<void*>());
+    (void)std::merge(first, mid, mid, last, first2);
+    (void)std::merge(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::min(value, value);
+    (void)std::min(value, value, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::min({ value, value });
+    (void)std::min({ value, value }, std::less<void*>());
+#endif
+    (void)std::min_element(first, last);
+    (void)std::min_element(first, last, std::less<void*>());
+    (void)std::minmax(value, value);
+    (void)std::minmax(value, value, std::less<void*>());
+#if TEST_STD_VER >= 11
+    (void)std::minmax({ value, value });
+    (void)std::minmax({ value, value }, std::less<void*>());
+#endif
+    (void)std::minmax_element(first, last);
+    (void)std::minmax_element(first, last, std::less<void*>());
+    (void)std::mismatch(first, last, first2);
+    (void)std::mismatch(first, last, first2, std::equal_to<void*>());
+#if TEST_STD_VER > 11
+    (void)std::mismatch(first, last, first2, last2);
+    (void)std::mismatch(first, last, first2, last2, std::equal_to<void*>());
+#endif
+    (void)std::move(first, last, first2);
+    (void)std::move_backward(first, last, last2);
+    (void)std::next_permutation(first, last);
+    (void)std::next_permutation(first, last, std::less<void*>());
+    (void)std::none_of(first, last, UnaryTrue());
+    (void)std::nth_element(first, mid, last);
+    (void)std::nth_element(first, mid, last, std::less<void*>());
+    (void)std::partial_sort(first, mid, last);
+    (void)std::partial_sort(first, mid, last, std::less<void*>());
+    (void)std::partial_sort_copy(first, last, first2, mid2);
+    (void)std::partial_sort_copy(first, last, first2, mid2, std::less<void*>());
+    (void)std::partition(first, last, UnaryTrue());
+    (void)std::partition_copy(first, last, first2, last2, UnaryTrue());
+    (void)std::partition_point(first, last, UnaryTrue());
+    (void)std::pop_heap(first, last);
+    (void)std::pop_heap(first, last, std::less<void*>());
+    (void)std::prev_permutation(first, last);
+    (void)std::prev_permutation(first, last, std::less<void*>());
+    (void)std::push_heap(first, last);
+    (void)std::push_heap(first, last, std::less<void*>());
+    (void)std::remove(first, last, value);
+    (void)std::remove_copy(first, last, first2, value);
+    (void)std::remove_copy_if(first, last, first2, UnaryTrue());
+    (void)std::remove_if(first, last, UnaryTrue());
+    (void)std::replace(first, last, value, value);
+    (void)std::replace_copy(first, last, first2, value, value);
+    (void)std::replace_copy_if(first, last, first2, UnaryTrue(), value);
+    (void)std::replace_if(first, last, UnaryTrue(), value);
+    (void)std::reverse(first, last);
+    (void)std::reverse_copy(first, last, first2);
+    (void)std::rotate(first, mid, last);
+    (void)std::rotate_copy(first, mid, last, first2);
+    (void)std::search(first, last, first2, mid2);
+    (void)std::search(first, last, first2, mid2, std::equal_to<void*>());
+    (void)std::search_n(first, last, count, value);
+    (void)std::search_n(first, last, count, value, std::equal_to<void*>());
+    (void)std::set_difference(first, mid, mid, last, first2);
+    (void)std::set_difference(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::set_intersection(first, mid, mid, last, first2);
+    (void)std::set_intersection(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::set_symmetric_difference(first, mid, mid, last, first2);
+    (void)std::set_symmetric_difference(first, mid, mid, last, first2, std::less<void*>());
+    (void)std::set_union(first, mid, mid, last, first2);
+    (void)std::set_union(first, mid, mid, last, first2, std::less<void*>());
+#if TEST_STD_VER > 17
+    (void)std::shift_left(first, last, count);
+    (void)std::shift_right(first, last, count);
+#endif
+    (void)std::sort(first, last);
+    (void)std::sort(first, last, std::less<void*>());
+    (void)std::sort_heap(first, last);
+    (void)std::sort_heap(first, last, std::less<void*>());
+    if (!TEST_IS_CONSTANT_EVALUATED) (void)std::stable_partition(first, last, UnaryTrue());
+    if (!TEST_IS_CONSTANT_EVALUATED) (void)std::stable_sort(first, last);
+    if (!TEST_IS_CONSTANT_EVALUATED) (void)std::stable_sort(first, last, std::less<void*>());
+    (void)std::swap_ranges(first, last, first2);
+    (void)std::transform(first, last, first2, UnaryTransform());
+    (void)std::transform(first, mid, mid, first2, BinaryTransform());
+    (void)std::unique(first, last);
+    (void)std::unique(first, last, std::equal_to<void*>());
+    (void)std::unique_copy(first, last, first2);
+    (void)std::unique_copy(first, last, first2, std::equal_to<void*>());
+    (void)std::upper_bound(first, last, value);
+    (void)std::upper_bound(first, last, value, std::less<void*>());
+
+    return true;
+}
+
+void test()
+{
+    all_the_algorithms();
+#if TEST_STD_VER > 17
+    static_assert(all_the_algorithms());
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.fences/atomic_signal_fence.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.fences/atomic_signal_fence.pass.cpp
new file mode 100644
index 0000000..c8e49ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.fences/atomic_signal_fence.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// void atomic_signal_fence(memory_order m);
+
+#include <atomic>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::atomic_signal_fence(std::memory_order_seq_cst);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.fences/atomic_thread_fence.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.fences/atomic_thread_fence.pass.cpp
new file mode 100644
index 0000000..1b1b6a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.fences/atomic_thread_fence.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// void atomic_thread_fence(memory_order m);
+
+#include <atomic>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::atomic_thread_fence(std::memory_order_seq_cst);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
new file mode 100644
index 0000000..3e67330
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// void atomic_flag_clear(volatile atomic_flag*);
+// void atomic_flag_clear(atomic_flag*);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f;
+        f.clear();
+        f.test_and_set();
+        std::atomic_flag_clear(&f);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        f.test_and_set();
+        std::atomic_flag_clear(&f);
+        assert(f.test_and_set() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
new file mode 100644
index 0000000..4146b4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_clear_explicit.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// void atomic_flag_clear_explicit(volatile atomic_flag*, memory_order);
+// void atomic_flag_clear_explicit(atomic_flag*, memory_order);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f; // uninitialized first
+        std::atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+        std::atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        std::atomic_flag f;
+        std::atomic_flag_clear_explicit(&f, std::memory_order_release);
+        assert(f.test_and_set() == 0);
+        std::atomic_flag_clear_explicit(&f, std::memory_order_release);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        std::atomic_flag f;
+        std::atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+        std::atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        std::atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+        std::atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        std::atomic_flag_clear_explicit(&f, std::memory_order_release);
+        assert(f.test_and_set() == 0);
+        std::atomic_flag_clear_explicit(&f, std::memory_order_release);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        std::atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+        std::atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test.pass.cpp
new file mode 100644
index 0000000..c8ded8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// bool atomic_flag_test(const volatile atomic_flag*);
+// bool atomic_flag_test(const atomic_flag*);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test(&f) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test(&f) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test(&f) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test(&f) == 1);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_and_set.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_and_set.pass.cpp
new file mode 100644
index 0000000..b80dbe5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_and_set.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// bool atomic_flag_test_and_set(volatile atomic_flag*);
+// bool atomic_flag_test_and_set(atomic_flag*);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set(&f) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set(&f) == 0);
+        assert(f.test_and_set() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_and_set_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_and_set_explicit.pass.cpp
new file mode 100644
index 0000000..00036c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_and_set_explicit.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// bool atomic_flag_test_and_set_explicit(volatile atomic_flag*, memory_order);
+// bool atomic_flag_test_and_set_explicit(atomic_flag*, memory_order);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_relaxed) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_consume) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_acquire) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_release) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_acq_rel) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_seq_cst) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_relaxed) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_consume) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_acquire) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_release) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_acq_rel) == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_and_set_explicit(&f, std::memory_order_seq_cst) == 0);
+        assert(f.test_and_set() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_explicit.pass.cpp
new file mode 100644
index 0000000..f2a5632
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/atomic_flag_test_explicit.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// bool atomic_flag_test_explicit(volatile atomic_flag*, memory_order);
+// bool atomic_flag_test_explicit(atomic_flag*, memory_order);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_relaxed) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_relaxed) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_consume) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_consume) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acquire) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acquire) == 1);
+    }
+#ifdef _LIBCPP_VERSION // Don't violate precondition [atomics.flag]/6
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_release) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_release) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acq_rel) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acq_rel) == 1);
+    }
+#endif // _LIBCPP_VERSION
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_seq_cst) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_seq_cst) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_relaxed) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_relaxed) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_consume) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_consume) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acquire) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acquire) == 1);
+    }
+#ifdef _LIBCPP_VERSION // Don't violate precondition [atomics.flag]/6
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_release) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_release) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acq_rel) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_acq_rel) == 1);
+    }
+#endif // _LIBCPP_VERSION
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_seq_cst) == 0);
+        assert(f.test_and_set() == 0);
+        assert(std::atomic_flag_test_explicit(&f, std::memory_order_seq_cst) == 1);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp
new file mode 100644
index 0000000..aaef049
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/clear.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// void clear(memory_order = memory_order_seq_cst);
+// void clear(memory_order = memory_order_seq_cst) volatile;
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f; // uninitialized
+        f.clear();
+        assert(f.test_and_set() == 0);
+        f.clear();
+        assert(f.test_and_set() == 0);
+    }
+    {
+        std::atomic_flag f;
+        f.clear(std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+        f.clear(std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        std::atomic_flag f;
+        f.clear(std::memory_order_release);
+        assert(f.test_and_set() == 0);
+        f.clear(std::memory_order_release);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        std::atomic_flag f;
+        f.clear(std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+        f.clear(std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set() == 0);
+        f.clear();
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear(std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+        f.clear(std::memory_order_relaxed);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear(std::memory_order_release);
+        assert(f.test_and_set() == 0);
+        f.clear(std::memory_order_release);
+        assert(f.test_and_set() == 0);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear(std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+        f.clear(std::memory_order_seq_cst);
+        assert(f.test_and_set() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_assign.compile.fail.cpp
new file mode 100644
index 0000000..aa5a24b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_assign.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// atomic_flag& operator=(const atomic_flag&) = delete;
+
+#include <atomic>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::atomic_flag f0;
+    std::atomic_flag f;
+    f = f0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_ctor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_ctor.compile.fail.cpp
new file mode 100644
index 0000000..10deaf1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_ctor.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// atomic_flag(const atomic_flag&) = delete;
+
+#include <atomic>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::atomic_flag f0;
+    std::atomic_flag f(f0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_volatile_assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_volatile_assign.compile.fail.cpp
new file mode 100644
index 0000000..a453fab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/copy_volatile_assign.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// atomic_flag& operator=(const atomic_flag&) = delete;
+
+#include <atomic>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::atomic_flag f0;
+    volatile std::atomic_flag f;
+    f = f0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/default.pass.cpp
new file mode 100644
index 0000000..8824946
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/default.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// atomic_flag() = default;
+
+#include <atomic>
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::atomic_flag f;
+    f.clear();
+    assert(f.test_and_set() == 0);
+    {
+        typedef std::atomic_flag A;
+        TEST_ALIGNAS_TYPE(A) char storage[sizeof(A)] = {1};
+        A& zero = *new (storage) A();
+        assert(!zero.test_and_set());
+        zero.~A();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/init.pass.cpp
new file mode 100644
index 0000000..0905f46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/init.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: c++03
+
+// <atomic>
+
+// struct atomic_flag
+
+// atomic_flag() = ATOMIC_FLAG_INIT;
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::atomic_flag f = ATOMIC_FLAG_INIT;
+    assert(f.test_and_set() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/test_and_set.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/test_and_set.pass.cpp
new file mode 100644
index 0000000..dca5ed8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.flag/test_and_set.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// struct atomic_flag
+
+// bool test_and_set(memory_order = memory_order_seq_cst);
+// bool test_and_set(memory_order = memory_order_seq_cst) volatile;
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set() == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_relaxed) == 0);
+        assert(f.test_and_set(std::memory_order_relaxed) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_consume) == 0);
+        assert(f.test_and_set(std::memory_order_consume) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_acquire) == 0);
+        assert(f.test_and_set(std::memory_order_acquire) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_release) == 0);
+        assert(f.test_and_set(std::memory_order_release) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_acq_rel) == 0);
+        assert(f.test_and_set(std::memory_order_acq_rel) == 1);
+    }
+    {
+        std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_seq_cst) == 0);
+        assert(f.test_and_set(std::memory_order_seq_cst) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set() == 0);
+        assert(f.test_and_set() == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_relaxed) == 0);
+        assert(f.test_and_set(std::memory_order_relaxed) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_consume) == 0);
+        assert(f.test_and_set(std::memory_order_consume) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_acquire) == 0);
+        assert(f.test_and_set(std::memory_order_acquire) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_release) == 0);
+        assert(f.test_and_set(std::memory_order_release) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_acq_rel) == 0);
+        assert(f.test_and_set(std::memory_order_acq_rel) == 1);
+    }
+    {
+        volatile std::atomic_flag f;
+        f.clear();
+        assert(f.test_and_set(std::memory_order_seq_cst) == 0);
+        assert(f.test_and_set(std::memory_order_seq_cst) == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.general/replace_failure_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.general/replace_failure_order.pass.cpp
new file mode 100644
index 0000000..732dd65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.general/replace_failure_order.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test verifies behavior specified by [atomics.types.operations.req]/21:
+//
+//     When only one memory_order argument is supplied, the value of success is
+//     order, and the value of failure is order except that a value of
+//     memory_order_acq_rel shall be replaced by the value memory_order_acquire
+//     and a value of memory_order_release shall be replaced by the value
+//     memory_order_relaxed.
+//
+// Clang's atomic intrinsics do this for us, but GCC's do not. We don't actually
+// have visibility to see what these memory orders are lowered to, but we can at
+// least check that they are lowered at all (otherwise there is a compile
+// failure with GCC).
+
+#include <atomic>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::atomic<int> i;
+    volatile std::atomic<int> v;
+    int exp = 0;
+
+    (void) i.compare_exchange_weak(exp, 0, std::memory_order_acq_rel);
+    (void) i.compare_exchange_weak(exp, 0, std::memory_order_release);
+    i.compare_exchange_strong(exp, 0, std::memory_order_acq_rel);
+    i.compare_exchange_strong(exp, 0, std::memory_order_release);
+
+    (void) v.compare_exchange_weak(exp, 0, std::memory_order_acq_rel);
+    (void) v.compare_exchange_weak(exp, 0, std::memory_order_release);
+    v.compare_exchange_strong(exp, 0, std::memory_order_acq_rel);
+    v.compare_exchange_strong(exp, 0, std::memory_order_release);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.general/replace_failure_order_codegen.sh.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.general/replace_failure_order_codegen.sh.cpp
new file mode 100644
index 0000000..15b9b8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.general/replace_failure_order_codegen.sh.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: clang
+
+// Adding "-fsanitize=thread" directly causes many platforms to fail (because
+// they don't support tsan), and causes other sanitizer builds to fail (e.g.
+// asan and tsan don't mix). Instead, require the tsan feature.
+// REQUIRES: tsan
+
+// This test verifies behavior specified by [atomics.types.operations.req]/21:
+//
+//     When only one memory_order argument is supplied, the value of success is
+//     order, and the value of failure is order except that a value of
+//     memory_order_acq_rel shall be replaced by the value memory_order_acquire
+//     and a value of memory_order_release shall be replaced by the value
+//     memory_order_relaxed.
+//
+// This test mirrors replace_failure_order.pass.cpp. However, we also want to
+// verify the codegen is correct. This verifies a bug where memory_order_acq_rel
+// was not being replaced with memory_order_acquire in external
+// TSAN-instrumented tests.
+
+// RUN: %{cxx} -c %s %{flags} %{compile_flags} -O2 -stdlib=libc++ -S -emit-llvm -o %t.ll
+
+#include <atomic>
+
+// Note: libc++ tests do not use on FileCheck.
+// RUN: grep -E "call i32 @__tsan_atomic32_compare_exchange_val\(.*, i32 1, i32 4, i32 2\)" %t.ll
+bool strong_memory_order_acq_rel(std::atomic<int>* a, int cmp) {
+  return a->compare_exchange_strong(cmp, 1, std::memory_order_acq_rel);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.lockfree/isalwayslockfree.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.lockfree/isalwayslockfree.pass.cpp
new file mode 100644
index 0000000..de24bc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.lockfree/isalwayslockfree.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <atomic>
+
+// static constexpr bool is_always_lock_free;
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+void checkAlwaysLockFree() {
+  if (std::atomic<T>::is_always_lock_free) {
+    LIBCPP_ASSERT(sizeof(std::atomic<T>) == sizeof(T)); // technically not required, but libc++ does it that way
+    assert(std::atomic<T>().is_lock_free());
+  }
+}
+
+void run()
+{
+// structs and unions can't be defined in the template invocation.
+// Work around this with a typedef.
+#define CHECK_ALWAYS_LOCK_FREE(T)                                              \
+  do {                                                                         \
+    typedef T type;                                                            \
+    checkAlwaysLockFree<type>();                                               \
+  } while (0)
+
+    CHECK_ALWAYS_LOCK_FREE(bool);
+    CHECK_ALWAYS_LOCK_FREE(char);
+    CHECK_ALWAYS_LOCK_FREE(signed char);
+    CHECK_ALWAYS_LOCK_FREE(unsigned char);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    CHECK_ALWAYS_LOCK_FREE(char8_t);
+#endif
+    CHECK_ALWAYS_LOCK_FREE(char16_t);
+    CHECK_ALWAYS_LOCK_FREE(char32_t);
+    CHECK_ALWAYS_LOCK_FREE(wchar_t);
+    CHECK_ALWAYS_LOCK_FREE(short);
+    CHECK_ALWAYS_LOCK_FREE(unsigned short);
+    CHECK_ALWAYS_LOCK_FREE(int);
+    CHECK_ALWAYS_LOCK_FREE(unsigned int);
+    CHECK_ALWAYS_LOCK_FREE(long);
+    CHECK_ALWAYS_LOCK_FREE(unsigned long);
+    CHECK_ALWAYS_LOCK_FREE(long long);
+    CHECK_ALWAYS_LOCK_FREE(unsigned long long);
+    CHECK_ALWAYS_LOCK_FREE(std::nullptr_t);
+    CHECK_ALWAYS_LOCK_FREE(void*);
+    CHECK_ALWAYS_LOCK_FREE(float);
+    CHECK_ALWAYS_LOCK_FREE(double);
+    CHECK_ALWAYS_LOCK_FREE(long double);
+#if __has_attribute(vector_size) && defined(_LIBCPP_VERSION)
+    CHECK_ALWAYS_LOCK_FREE(int __attribute__((vector_size(1 * sizeof(int)))));
+    CHECK_ALWAYS_LOCK_FREE(int __attribute__((vector_size(2 * sizeof(int)))));
+    CHECK_ALWAYS_LOCK_FREE(int __attribute__((vector_size(4 * sizeof(int)))));
+    CHECK_ALWAYS_LOCK_FREE(int __attribute__((vector_size(16 * sizeof(int)))));
+    CHECK_ALWAYS_LOCK_FREE(int __attribute__((vector_size(32 * sizeof(int)))));
+    CHECK_ALWAYS_LOCK_FREE(float __attribute__((vector_size(1 * sizeof(float)))));
+    CHECK_ALWAYS_LOCK_FREE(float __attribute__((vector_size(2 * sizeof(float)))));
+    CHECK_ALWAYS_LOCK_FREE(float __attribute__((vector_size(4 * sizeof(float)))));
+    CHECK_ALWAYS_LOCK_FREE(float __attribute__((vector_size(16 * sizeof(float)))));
+    CHECK_ALWAYS_LOCK_FREE(float __attribute__((vector_size(32 * sizeof(float)))));
+    CHECK_ALWAYS_LOCK_FREE(double __attribute__((vector_size(1 * sizeof(double)))));
+    CHECK_ALWAYS_LOCK_FREE(double __attribute__((vector_size(2 * sizeof(double)))));
+    CHECK_ALWAYS_LOCK_FREE(double __attribute__((vector_size(4 * sizeof(double)))));
+    CHECK_ALWAYS_LOCK_FREE(double __attribute__((vector_size(16 * sizeof(double)))));
+    CHECK_ALWAYS_LOCK_FREE(double __attribute__((vector_size(32 * sizeof(double)))));
+#endif // __has_attribute(vector_size) && defined(_LIBCPP_VERSION)
+    CHECK_ALWAYS_LOCK_FREE(struct Empty {});
+    CHECK_ALWAYS_LOCK_FREE(struct OneInt { int i; });
+    CHECK_ALWAYS_LOCK_FREE(struct IntArr2 { int i[2]; });
+    CHECK_ALWAYS_LOCK_FREE(struct LLIArr2 { long long int i[2]; });
+    CHECK_ALWAYS_LOCK_FREE(struct LLIArr4 { long long int i[4]; });
+    CHECK_ALWAYS_LOCK_FREE(struct LLIArr8 { long long int i[8]; });
+    CHECK_ALWAYS_LOCK_FREE(struct LLIArr16 { long long int i[16]; });
+    CHECK_ALWAYS_LOCK_FREE(struct Padding { char c; /* padding */ long long int i; });
+    CHECK_ALWAYS_LOCK_FREE(union IntFloat { int i; float f; });
+    CHECK_ALWAYS_LOCK_FREE(enum class CharEnumClass : char { foo });
+
+    // C macro and static constexpr must be consistent.
+    enum class CharEnumClass : char { foo };
+    static_assert(std::atomic<bool>::is_always_lock_free == (2 == ATOMIC_BOOL_LOCK_FREE), "");
+    static_assert(std::atomic<char>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE), "");
+    static_assert(std::atomic<CharEnumClass>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE), "");
+    static_assert(std::atomic<signed char>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE), "");
+    static_assert(std::atomic<unsigned char>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE), "");
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    static_assert(std::atomic<char8_t>::is_always_lock_free == (2 == ATOMIC_CHAR8_T_LOCK_FREE), "");
+#endif
+    static_assert(std::atomic<char16_t>::is_always_lock_free == (2 == ATOMIC_CHAR16_T_LOCK_FREE), "");
+    static_assert(std::atomic<char32_t>::is_always_lock_free == (2 == ATOMIC_CHAR32_T_LOCK_FREE), "");
+    static_assert(std::atomic<wchar_t>::is_always_lock_free == (2 == ATOMIC_WCHAR_T_LOCK_FREE), "");
+    static_assert(std::atomic<short>::is_always_lock_free == (2 == ATOMIC_SHORT_LOCK_FREE), "");
+    static_assert(std::atomic<unsigned short>::is_always_lock_free == (2 == ATOMIC_SHORT_LOCK_FREE), "");
+    static_assert(std::atomic<int>::is_always_lock_free == (2 == ATOMIC_INT_LOCK_FREE), "");
+    static_assert(std::atomic<unsigned int>::is_always_lock_free == (2 == ATOMIC_INT_LOCK_FREE), "");
+    static_assert(std::atomic<long>::is_always_lock_free == (2 == ATOMIC_LONG_LOCK_FREE), "");
+    static_assert(std::atomic<unsigned long>::is_always_lock_free == (2 == ATOMIC_LONG_LOCK_FREE), "");
+    static_assert(std::atomic<long long>::is_always_lock_free == (2 == ATOMIC_LLONG_LOCK_FREE), "");
+    static_assert(std::atomic<unsigned long long>::is_always_lock_free == (2 == ATOMIC_LLONG_LOCK_FREE), "");
+    static_assert(std::atomic<void*>::is_always_lock_free == (2 == ATOMIC_POINTER_LOCK_FREE), "");
+    static_assert(std::atomic<std::nullptr_t>::is_always_lock_free == (2 == ATOMIC_POINTER_LOCK_FREE), "");
+
+#if TEST_STD_VER >= 20
+    static_assert(std::atomic_signed_lock_free::is_always_lock_free, "");
+    static_assert(std::atomic_unsigned_lock_free::is_always_lock_free, "");
+#endif
+}
+
+int main(int, char**) { run(); return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.lockfree/lockfree.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.lockfree/lockfree.pass.cpp
new file mode 100644
index 0000000..08f0097
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.lockfree/lockfree.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// #define ATOMIC_BOOL_LOCK_FREE unspecified
+// #define ATOMIC_CHAR_LOCK_FREE unspecified
+// #define ATOMIC_CHAR8_T_LOCK_FREE unspecified // C++20
+// #define ATOMIC_CHAR16_T_LOCK_FREE unspecified
+// #define ATOMIC_CHAR32_T_LOCK_FREE unspecified
+// #define ATOMIC_WCHAR_T_LOCK_FREE unspecified
+// #define ATOMIC_SHORT_LOCK_FREE unspecified
+// #define ATOMIC_INT_LOCK_FREE unspecified
+// #define ATOMIC_LONG_LOCK_FREE unspecified
+// #define ATOMIC_LLONG_LOCK_FREE unspecified
+// #define ATOMIC_POINTER_LOCK_FREE unspecified
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(ATOMIC_BOOL_LOCK_FREE == 0 ||
+           ATOMIC_BOOL_LOCK_FREE == 1 ||
+           ATOMIC_BOOL_LOCK_FREE == 2);
+    assert(ATOMIC_CHAR_LOCK_FREE == 0 ||
+           ATOMIC_CHAR_LOCK_FREE == 1 ||
+           ATOMIC_CHAR_LOCK_FREE == 2);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    assert(ATOMIC_CHAR8_T_LOCK_FREE == 0 ||
+           ATOMIC_CHAR8_T_LOCK_FREE == 1 ||
+           ATOMIC_CHAR8_T_LOCK_FREE == 2);
+#endif
+    assert(ATOMIC_CHAR16_T_LOCK_FREE == 0 ||
+           ATOMIC_CHAR16_T_LOCK_FREE == 1 ||
+           ATOMIC_CHAR16_T_LOCK_FREE == 2);
+    assert(ATOMIC_CHAR32_T_LOCK_FREE == 0 ||
+           ATOMIC_CHAR32_T_LOCK_FREE == 1 ||
+           ATOMIC_CHAR32_T_LOCK_FREE == 2);
+    assert(ATOMIC_WCHAR_T_LOCK_FREE == 0 ||
+           ATOMIC_WCHAR_T_LOCK_FREE == 1 ||
+           ATOMIC_WCHAR_T_LOCK_FREE == 2);
+    assert(ATOMIC_SHORT_LOCK_FREE == 0 ||
+           ATOMIC_SHORT_LOCK_FREE == 1 ||
+           ATOMIC_SHORT_LOCK_FREE == 2);
+    assert(ATOMIC_INT_LOCK_FREE == 0 ||
+           ATOMIC_INT_LOCK_FREE == 1 ||
+           ATOMIC_INT_LOCK_FREE == 2);
+    assert(ATOMIC_LONG_LOCK_FREE == 0 ||
+           ATOMIC_LONG_LOCK_FREE == 1 ||
+           ATOMIC_LONG_LOCK_FREE == 2);
+    assert(ATOMIC_LLONG_LOCK_FREE == 0 ||
+           ATOMIC_LLONG_LOCK_FREE == 1 ||
+           ATOMIC_LLONG_LOCK_FREE == 2);
+    assert(ATOMIC_POINTER_LOCK_FREE == 0 ||
+           ATOMIC_POINTER_LOCK_FREE == 1 ||
+           ATOMIC_POINTER_LOCK_FREE == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/kill_dependency.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/kill_dependency.pass.cpp
new file mode 100644
index 0000000..c26b230
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/kill_dependency.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T> T kill_dependency(T y);
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::kill_dependency(5) == 5);
+    assert(std::kill_dependency(-5.5) == -5.5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/memory_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/memory_order.pass.cpp
new file mode 100644
index 0000000..54579db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/memory_order.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// typedef enum memory_order
+// {
+//     memory_order_relaxed, memory_order_consume, memory_order_acquire,
+//     memory_order_release, memory_order_acq_rel, memory_order_seq_cst
+// } memory_order;
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(static_cast<int>(std::memory_order_relaxed) == 0);
+    assert(static_cast<int>(std::memory_order_consume) == 1);
+    assert(static_cast<int>(std::memory_order_acquire) == 2);
+    assert(static_cast<int>(std::memory_order_release) == 3);
+    assert(static_cast<int>(std::memory_order_acq_rel) == 4);
+    assert(static_cast<int>(std::memory_order_seq_cst) == 5);
+
+    std::memory_order o = std::memory_order_seq_cst;
+    assert(static_cast<int>(o) == 5);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/memory_order_new.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/memory_order_new.pass.cpp
new file mode 100644
index 0000000..a291e33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.order/memory_order_new.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <atomic>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::memory_order_relaxed == std::memory_order::relaxed);
+    static_assert(std::memory_order_consume == std::memory_order::consume);
+    static_assert(std::memory_order_acquire == std::memory_order::acquire);
+    static_assert(std::memory_order_release == std::memory_order::release);
+    static_assert(std::memory_order_acq_rel == std::memory_order::acq_rel);
+    static_assert(std::memory_order_seq_cst == std::memory_order::seq_cst);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.syn/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.syn/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.syn/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/address.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/address.pass.cpp
new file mode 100644
index 0000000..b3aa1fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/address.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+// struct atomic<T*>
+// {
+//     bool is_lock_free() const volatile;
+//     bool is_lock_free() const;
+//     void store(T* desr, memory_order m = memory_order_seq_cst) volatile;
+//     void store(T* desr, memory_order m = memory_order_seq_cst);
+//     T* load(memory_order m = memory_order_seq_cst) const volatile;
+//     T* load(memory_order m = memory_order_seq_cst) const;
+//     operator T*() const volatile;
+//     operator T*() const;
+//     T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile;
+//     T* exchange(T* desr, memory_order m = memory_order_seq_cst);
+//     bool compare_exchange_weak(T*& expc, T* desr,
+//                                memory_order s, memory_order f) volatile;
+//     bool compare_exchange_weak(T*& expc, T* desr,
+//                                memory_order s, memory_order f);
+//     bool compare_exchange_strong(T*& expc, T* desr,
+//                                  memory_order s, memory_order f) volatile;
+//     bool compare_exchange_strong(T*& expc, T* desr,
+//                                  memory_order s, memory_order f);
+//     bool compare_exchange_weak(T*& expc, T* desr,
+//                                memory_order m = memory_order_seq_cst) volatile;
+//     bool compare_exchange_weak(T*& expc, T* desr,
+//                                memory_order m = memory_order_seq_cst);
+//     bool compare_exchange_strong(T*& expc, T* desr,
+//                                 memory_order m = memory_order_seq_cst) volatile;
+//     bool compare_exchange_strong(T*& expc, T* desr,
+//                                  memory_order m = memory_order_seq_cst);
+//     T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile;
+//     T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst);
+//     T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile;
+//     T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst);
+//
+//     atomic() = default;
+//     constexpr atomic(T* desr);
+//     atomic(const atomic&) = delete;
+//     atomic& operator=(const atomic&) = delete;
+//     atomic& operator=(const atomic&) volatile = delete;
+//
+//     T* operator=(T*) volatile;
+//     T* operator=(T*);
+//     T* operator++(int) volatile;
+//     T* operator++(int);
+//     T* operator--(int) volatile;
+//     T* operator--(int);
+//     T* operator++() volatile;
+//     T* operator++();
+//     T* operator--() volatile;
+//     T* operator--();
+//     T* operator+=(ptrdiff_t op) volatile;
+//     T* operator+=(ptrdiff_t op);
+//     T* operator-=(ptrdiff_t op) volatile;
+//     T* operator-=(ptrdiff_t op);
+// };
+
+#include <atomic>
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include <cmpxchg_loop.h>
+
+#include "test_macros.h"
+
+template <class A, class T>
+void
+do_test()
+{
+    typedef typename std::remove_pointer<T>::type X;
+    A obj(T(0));
+    assert(obj == T(0));
+    bool b0 = obj.is_lock_free();
+    ((void)b0); // mark as unused
+    obj.store(T(0));
+    assert(obj == T(0));
+    obj.store(T(1), std::memory_order_release);
+    assert(obj == T(1));
+    assert(obj.load() == T(1));
+    assert(obj.load(std::memory_order_acquire) == T(1));
+    assert(obj.exchange(T(2)) == T(1));
+    assert(obj == T(2));
+    assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
+    assert(obj == T(3));
+    T x = obj;
+    assert(cmpxchg_weak_loop(obj, x, T(2)) == true);
+    assert(obj == T(2));
+    assert(x == T(3));
+    assert(obj.compare_exchange_weak(x, T(1)) == false);
+    assert(obj == T(2));
+    assert(x == T(2));
+    x = T(2);
+    assert(obj.compare_exchange_strong(x, T(1)) == true);
+    assert(obj == T(1));
+    assert(x == T(2));
+    assert(obj.compare_exchange_strong(x, T(0)) == false);
+    assert(obj == T(1));
+    assert(x == T(1));
+    assert((obj = T(0)) == T(0));
+    assert(obj == T(0));
+    obj = T(2*sizeof(X));
+    assert((obj += std::ptrdiff_t(3)) == T(5*sizeof(X)));
+    assert(obj == T(5*sizeof(X)));
+    assert((obj -= std::ptrdiff_t(3)) == T(2*sizeof(X)));
+    assert(obj == T(2*sizeof(X)));
+
+    {
+        TEST_ALIGNAS_TYPE(A) char storage[sizeof(A)] = {23};
+        A& zero = *new (storage) A();
+        assert(zero == T(0));
+        zero.~A();
+    }
+}
+
+template <class A, class T>
+void test()
+{
+    do_test<A, T>();
+    do_test<volatile A, T>();
+}
+
+int main(int, char**)
+{
+    test<std::atomic<int*>, int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/bool.pass.cpp
new file mode 100644
index 0000000..78234ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/bool.pass.cpp
@@ -0,0 +1,223 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+// struct atomic
+// {
+//     bool is_lock_free() const volatile;
+//     bool is_lock_free() const;
+//     void store(T desr, memory_order m = memory_order_seq_cst) volatile;
+//     void store(T desr, memory_order m = memory_order_seq_cst);
+//     T load(memory_order m = memory_order_seq_cst) const volatile;
+//     T load(memory_order m = memory_order_seq_cst) const;
+//     operator T() const volatile;
+//     operator T() const;
+//     T exchange(T desr, memory_order m = memory_order_seq_cst) volatile;
+//     T exchange(T desr, memory_order m = memory_order_seq_cst);
+//     bool compare_exchange_weak(T& expc, T desr,
+//                                memory_order s, memory_order f) volatile;
+//     bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f);
+//     bool compare_exchange_strong(T& expc, T desr,
+//                                  memory_order s, memory_order f) volatile;
+//     bool compare_exchange_strong(T& expc, T desr,
+//                                  memory_order s, memory_order f);
+//     bool compare_exchange_weak(T& expc, T desr,
+//                                memory_order m = memory_order_seq_cst) volatile;
+//     bool compare_exchange_weak(T& expc, T desr,
+//                                memory_order m = memory_order_seq_cst);
+//     bool compare_exchange_strong(T& expc, T desr,
+//                                 memory_order m = memory_order_seq_cst) volatile;
+//     bool compare_exchange_strong(T& expc, T desr,
+//                                  memory_order m = memory_order_seq_cst);
+//
+//     atomic() = default;
+//     constexpr atomic(T desr);
+//     atomic(const atomic&) = delete;
+//     atomic& operator=(const atomic&) = delete;
+//     atomic& operator=(const atomic&) volatile = delete;
+//     T operator=(T) volatile;
+//     T operator=(T);
+// };
+//
+// typedef atomic<bool> atomic_bool;
+
+#include <atomic>
+#include <new>
+#include <cassert>
+
+#include <cmpxchg_loop.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        volatile std::atomic<bool> obj(true);
+        assert(obj == true);
+        bool b0 = obj.is_lock_free();
+        (void)b0; // to placate scan-build
+        obj.store(false);
+        assert(obj == false);
+        obj.store(true, std::memory_order_release);
+        assert(obj == true);
+        assert(obj.load() == true);
+        assert(obj.load(std::memory_order_acquire) == true);
+        assert(obj.exchange(false) == true);
+        assert(obj == false);
+        assert(obj.exchange(true, std::memory_order_relaxed) == false);
+        assert(obj == true);
+        bool x = obj;
+        assert(cmpxchg_weak_loop(obj, x, false) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert(obj.compare_exchange_weak(x, true,
+                                         std::memory_order_seq_cst) == false);
+        assert(obj == false);
+        assert(x == false);
+        obj.store(true);
+        x = true;
+        assert(cmpxchg_weak_loop(obj, x, false,
+                                 std::memory_order_seq_cst,
+                                 std::memory_order_seq_cst) == true);
+        assert(obj == false);
+        assert(x == true);
+        x = true;
+        obj.store(true);
+        assert(obj.compare_exchange_strong(x, false) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert(obj.compare_exchange_strong(x, true,
+                                         std::memory_order_seq_cst) == false);
+        assert(obj == false);
+        assert(x == false);
+        x = true;
+        obj.store(true);
+        assert(obj.compare_exchange_strong(x, false,
+                                           std::memory_order_seq_cst,
+                                           std::memory_order_seq_cst) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert((obj = false) == false);
+        assert(obj == false);
+        assert((obj = true) == true);
+        assert(obj == true);
+    }
+    {
+        std::atomic<bool> obj(true);
+        assert(obj == true);
+        bool b0 = obj.is_lock_free();
+        (void)b0; // to placate scan-build
+        obj.store(false);
+        assert(obj == false);
+        obj.store(true, std::memory_order_release);
+        assert(obj == true);
+        assert(obj.load() == true);
+        assert(obj.load(std::memory_order_acquire) == true);
+        assert(obj.exchange(false) == true);
+        assert(obj == false);
+        assert(obj.exchange(true, std::memory_order_relaxed) == false);
+        assert(obj == true);
+        bool x = obj;
+        assert(cmpxchg_weak_loop(obj, x, false) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert(obj.compare_exchange_weak(x, true,
+                                         std::memory_order_seq_cst) == false);
+        assert(obj == false);
+        assert(x == false);
+        obj.store(true);
+        x = true;
+        assert(cmpxchg_weak_loop(obj, x, false,
+                                 std::memory_order_seq_cst,
+                                 std::memory_order_seq_cst) == true);
+        assert(obj == false);
+        assert(x == true);
+        x = true;
+        obj.store(true);
+        assert(obj.compare_exchange_strong(x, false) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert(obj.compare_exchange_strong(x, true,
+                                         std::memory_order_seq_cst) == false);
+        assert(obj == false);
+        assert(x == false);
+        x = true;
+        obj.store(true);
+        assert(obj.compare_exchange_strong(x, false,
+                                           std::memory_order_seq_cst,
+                                           std::memory_order_seq_cst) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert((obj = false) == false);
+        assert(obj == false);
+        assert((obj = true) == true);
+        assert(obj == true);
+    }
+    {
+        std::atomic_bool obj(true);
+        assert(obj == true);
+        bool b0 = obj.is_lock_free();
+        (void)b0; // to placate scan-build
+        obj.store(false);
+        assert(obj == false);
+        obj.store(true, std::memory_order_release);
+        assert(obj == true);
+        assert(obj.load() == true);
+        assert(obj.load(std::memory_order_acquire) == true);
+        assert(obj.exchange(false) == true);
+        assert(obj == false);
+        assert(obj.exchange(true, std::memory_order_relaxed) == false);
+        assert(obj == true);
+        bool x = obj;
+        assert(cmpxchg_weak_loop(obj, x, false) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert(obj.compare_exchange_weak(x, true,
+                                         std::memory_order_seq_cst) == false);
+        assert(obj == false);
+        assert(x == false);
+        obj.store(true);
+        x = true;
+        assert(cmpxchg_weak_loop(obj, x, false,
+                                 std::memory_order_seq_cst,
+                                 std::memory_order_seq_cst) == true);
+        assert(obj == false);
+        assert(x == true);
+        x = true;
+        obj.store(true);
+        assert(obj.compare_exchange_strong(x, false) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert(obj.compare_exchange_strong(x, true,
+                                         std::memory_order_seq_cst) == false);
+        assert(obj == false);
+        assert(x == false);
+        x = true;
+        obj.store(true);
+        assert(obj.compare_exchange_strong(x, false,
+                                           std::memory_order_seq_cst,
+                                           std::memory_order_seq_cst) == true);
+        assert(obj == false);
+        assert(x == true);
+        assert((obj = false) == false);
+        assert(obj == false);
+        assert((obj = true) == true);
+        assert(obj == true);
+    }
+    {
+        typedef std::atomic<bool> A;
+        TEST_ALIGNAS_TYPE(A) char storage[sizeof(A)] = {1};
+        A& zero = *new (storage) A();
+        assert(zero == false);
+        zero.~A();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/constexpr_noexcept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/constexpr_noexcept.compile.pass.cpp
new file mode 100644
index 0000000..fca52a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/constexpr_noexcept.compile.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <atomic>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool test() {
+  [[maybe_unused]] constexpr T a;
+  static_assert(std::is_nothrow_constructible_v<T>);
+  ASSERT_NOEXCEPT(T{});
+  return true;
+}
+
+struct throwing {
+  throwing() {}
+};
+
+struct trivial {
+  int a;
+};
+
+void test() {
+  static_assert(test<std::atomic<bool>>());
+  static_assert(test<std::atomic<int>>());
+  static_assert(test<std::atomic<int*>>());
+  static_assert(test<std::atomic<trivial>>());
+  static_assert(test<std::atomic_flag>());
+
+  static_assert(!std::is_nothrow_constructible_v<std::atomic<throwing>>);
+  ASSERT_NOT_NOEXCEPT(std::atomic<throwing>{});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/copy_semantics_traits.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/copy_semantics_traits.pass.cpp
new file mode 100644
index 0000000..f717314
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/copy_semantics_traits.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <atomic>
+
+// template <class T>
+// struct atomic
+// {
+//     atomic(const atomic&) = delete;
+//     atomic& operator=(const atomic&) = delete;
+//     atomic& operator=(const atomic&) volatile = delete;
+// };
+
+// template <class T>
+// struct atomic<T*>
+// {
+//     atomic(const atomic&) = delete;
+//     atomic& operator=(const atomic&) = delete;
+//     atomic& operator=(const atomic&) volatile = delete;
+// };
+
+#include <atomic>
+#include <type_traits>
+
+template <typename T>
+using is_volatile_copy_assignable = std::is_assignable<volatile T&, const T&>;
+
+int main(int, char**)
+{
+    static_assert(!std::is_copy_constructible<std::atomic<int> >::value, "");
+    static_assert(!std::is_copy_assignable<std::atomic<int> >::value, "");
+    static_assert(!is_volatile_copy_assignable<std::atomic<int> >::value, "");
+    static_assert(!std::is_copy_constructible<std::atomic<int*> >::value, "");
+    static_assert(!std::is_copy_assignable<std::atomic<int*> >::value, "");
+    static_assert(!is_volatile_copy_assignable<std::atomic<int*> >::value, "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/cstdint_typedefs.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/cstdint_typedefs.pass.cpp
new file mode 100644
index 0000000..0867007
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/cstdint_typedefs.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// typedef atomic<int_least8_t>   atomic_int_least8_t;
+// typedef atomic<uint_least8_t>  atomic_uint_least8_t;
+// typedef atomic<int_least16_t>  atomic_int_least16_t;
+// typedef atomic<uint_least16_t> atomic_uint_least16_t;
+// typedef atomic<int_least32_t>  atomic_int_least32_t;
+// typedef atomic<uint_least32_t> atomic_uint_least32_t;
+// typedef atomic<int_least64_t>  atomic_int_least64_t;
+// typedef atomic<uint_least64_t> atomic_uint_least64_t;
+//
+// typedef atomic<int_fast8_t>   atomic_int_fast8_t;
+// typedef atomic<uint_fast8_t>  atomic_uint_fast8_t;
+// typedef atomic<int_fast16_t>  atomic_int_fast16_t;
+// typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
+// typedef atomic<int_fast32_t>  atomic_int_fast32_t;
+// typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
+// typedef atomic<int_fast64_t>  atomic_int_fast64_t;
+// typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
+//
+// typedef atomic<intptr_t>  atomic_intptr_t;
+// typedef atomic<uintptr_t> atomic_uintptr_t;
+// typedef atomic<size_t>    atomic_size_t;
+// typedef atomic<ptrdiff_t> atomic_ptrdiff_t;
+// typedef atomic<intmax_t>  atomic_intmax_t;
+// typedef atomic<uintmax_t> atomic_uintmax_t;
+
+#include <atomic>
+#include <type_traits>
+#include <cstdint>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::atomic<  std::int_least8_t>,   std::atomic_int_least8_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::uint_least8_t>,  std::atomic_uint_least8_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::int_least16_t>,  std::atomic_int_least16_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uint_least16_t>, std::atomic_uint_least16_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::int_least32_t>,  std::atomic_int_least32_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uint_least32_t>, std::atomic_uint_least32_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::int_least64_t>,  std::atomic_int_least64_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uint_least64_t>, std::atomic_uint_least64_t>::value), "");
+
+    static_assert((std::is_same<std::atomic<  std::int_fast8_t>,   std::atomic_int_fast8_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::uint_fast8_t>,  std::atomic_uint_fast8_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::int_fast16_t>,  std::atomic_int_fast16_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uint_fast16_t>, std::atomic_uint_fast16_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::int_fast32_t>,  std::atomic_int_fast32_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uint_fast32_t>, std::atomic_uint_fast32_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::int_fast64_t>,  std::atomic_int_fast64_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uint_fast64_t>, std::atomic_uint_fast64_t>::value), "");
+
+    static_assert((std::is_same<std::atomic< std::intptr_t>,  std::atomic_intptr_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uintptr_t>, std::atomic_uintptr_t>::value), "");
+    static_assert((std::is_same<std::atomic<   std::size_t>,    std::atomic_size_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::ptrdiff_t>, std::atomic_ptrdiff_t>::value), "");
+    static_assert((std::is_same<std::atomic< std::intmax_t>,  std::atomic_intmax_t>::value), "");
+    static_assert((std::is_same<std::atomic<std::uintmax_t>, std::atomic_uintmax_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/integral.pass.cpp
new file mode 100644
index 0000000..34559f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/integral.pass.cpp
@@ -0,0 +1,222 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <>
+// struct atomic<integral>
+// {
+//     bool is_lock_free() const volatile;
+//     bool is_lock_free() const;
+//     void store(integral desr, memory_order m = memory_order_seq_cst) volatile;
+//     void store(integral desr, memory_order m = memory_order_seq_cst);
+//     integral load(memory_order m = memory_order_seq_cst) const volatile;
+//     integral load(memory_order m = memory_order_seq_cst) const;
+//     operator integral() const volatile;
+//     operator integral() const;
+//     integral exchange(integral desr,
+//                       memory_order m = memory_order_seq_cst) volatile;
+//     integral exchange(integral desr, memory_order m = memory_order_seq_cst);
+//     bool compare_exchange_weak(integral& expc, integral desr,
+//                                memory_order s, memory_order f) volatile;
+//     bool compare_exchange_weak(integral& expc, integral desr,
+//                                memory_order s, memory_order f);
+//     bool compare_exchange_strong(integral& expc, integral desr,
+//                                  memory_order s, memory_order f) volatile;
+//     bool compare_exchange_strong(integral& expc, integral desr,
+//                                  memory_order s, memory_order f);
+//     bool compare_exchange_weak(integral& expc, integral desr,
+//                                memory_order m = memory_order_seq_cst) volatile;
+//     bool compare_exchange_weak(integral& expc, integral desr,
+//                                memory_order m = memory_order_seq_cst);
+//     bool compare_exchange_strong(integral& expc, integral desr,
+//                                 memory_order m = memory_order_seq_cst) volatile;
+//     bool compare_exchange_strong(integral& expc, integral desr,
+//                                  memory_order m = memory_order_seq_cst);
+//
+//     integral
+//         fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile;
+//     integral fetch_add(integral op, memory_order m = memory_order_seq_cst);
+//     integral
+//         fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile;
+//     integral fetch_sub(integral op, memory_order m = memory_order_seq_cst);
+//     integral
+//         fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile;
+//     integral fetch_and(integral op, memory_order m = memory_order_seq_cst);
+//     integral
+//         fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile;
+//     integral fetch_or(integral op, memory_order m = memory_order_seq_cst);
+//     integral
+//         fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile;
+//     integral fetch_xor(integral op, memory_order m = memory_order_seq_cst);
+//
+//     atomic() = default;
+//     constexpr atomic(integral desr);
+//     atomic(const atomic&) = delete;
+//     atomic& operator=(const atomic&) = delete;
+//     atomic& operator=(const atomic&) volatile = delete;
+//     integral operator=(integral desr) volatile;
+//     integral operator=(integral desr);
+//
+//     integral operator++(int) volatile;
+//     integral operator++(int);
+//     integral operator--(int) volatile;
+//     integral operator--(int);
+//     integral operator++() volatile;
+//     integral operator++();
+//     integral operator--() volatile;
+//     integral operator--();
+//     integral operator+=(integral op) volatile;
+//     integral operator+=(integral op);
+//     integral operator-=(integral op) volatile;
+//     integral operator-=(integral op);
+//     integral operator&=(integral op) volatile;
+//     integral operator&=(integral op);
+//     integral operator|=(integral op) volatile;
+//     integral operator|=(integral op);
+//     integral operator^=(integral op) volatile;
+//     integral operator^=(integral op);
+// };
+
+#include <atomic>
+#include <new>
+#include <cassert>
+
+#include <cmpxchg_loop.h>
+
+#include "test_macros.h"
+
+template <class A, class T>
+void
+do_test()
+{
+    A obj(T(0));
+    assert(obj == T(0));
+    bool b0 = obj.is_lock_free();
+    ((void)b0); // mark as unused
+    obj.store(T(0));
+    assert(obj == T(0));
+    obj.store(T(1), std::memory_order_release);
+    assert(obj == T(1));
+    assert(obj.load() == T(1));
+    assert(obj.load(std::memory_order_acquire) == T(1));
+    assert(obj.exchange(T(2)) == T(1));
+    assert(obj == T(2));
+    assert(obj.exchange(T(3), std::memory_order_relaxed) == T(2));
+    assert(obj == T(3));
+    T x = obj;
+    assert(cmpxchg_weak_loop(obj, x, T(2)) == true);
+    assert(obj == T(2));
+    assert(x == T(3));
+    assert(obj.compare_exchange_weak(x, T(1)) == false);
+    assert(obj == T(2));
+    assert(x == T(2));
+    x = T(2);
+    assert(obj.compare_exchange_strong(x, T(1)) == true);
+    assert(obj == T(1));
+    assert(x == T(2));
+    assert(obj.compare_exchange_strong(x, T(0)) == false);
+    assert(obj == T(1));
+    assert(x == T(1));
+    assert((obj = T(0)) == T(0));
+    assert(obj == T(0));
+    assert(obj++ == T(0));
+    assert(obj == T(1));
+    assert(++obj == T(2));
+    assert(obj == T(2));
+    assert(--obj == T(1));
+    assert(obj == T(1));
+    assert(obj-- == T(1));
+    assert(obj == T(0));
+    obj = T(2);
+    assert((obj += T(3)) == T(5));
+    assert(obj == T(5));
+    assert((obj -= T(3)) == T(2));
+    assert(obj == T(2));
+    assert((obj |= T(5)) == T(7));
+    assert(obj == T(7));
+    assert((obj &= T(0xF)) == T(7));
+    assert(obj == T(7));
+    assert((obj ^= T(0xF)) == T(8));
+    assert(obj == T(8));
+
+    {
+        TEST_ALIGNAS_TYPE(A) char storage[sizeof(A)] = {23};
+        A& zero = *new (storage) A();
+        assert(zero == 0);
+        zero.~A();
+    }
+}
+
+template <class A, class T>
+void test()
+{
+    do_test<A, T>();
+    do_test<volatile A, T>();
+}
+
+
+int main(int, char**)
+{
+    test<std::atomic_char, char>();
+    test<std::atomic_schar, signed char>();
+    test<std::atomic_uchar, unsigned char>();
+    test<std::atomic_short, short>();
+    test<std::atomic_ushort, unsigned short>();
+    test<std::atomic_int, int>();
+    test<std::atomic_uint, unsigned int>();
+    test<std::atomic_long, long>();
+    test<std::atomic_ulong, unsigned long>();
+    test<std::atomic_llong, long long>();
+    test<std::atomic_ullong, unsigned long long>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<std::atomic_char8_t, char8_t>();
+#endif
+    test<std::atomic_char16_t, char16_t>();
+    test<std::atomic_char32_t, char32_t>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::atomic_wchar_t, wchar_t>();
+#endif
+
+    test<std::atomic_int8_t,    int8_t>();
+    test<std::atomic_uint8_t,  uint8_t>();
+    test<std::atomic_int16_t,   int16_t>();
+    test<std::atomic_uint16_t, uint16_t>();
+    test<std::atomic_int32_t,   int32_t>();
+    test<std::atomic_uint32_t, uint32_t>();
+    test<std::atomic_int64_t,   int64_t>();
+    test<std::atomic_uint64_t, uint64_t>();
+
+    test<volatile std::atomic_char, char>();
+    test<volatile std::atomic_schar, signed char>();
+    test<volatile std::atomic_uchar, unsigned char>();
+    test<volatile std::atomic_short, short>();
+    test<volatile std::atomic_ushort, unsigned short>();
+    test<volatile std::atomic_int, int>();
+    test<volatile std::atomic_uint, unsigned int>();
+    test<volatile std::atomic_long, long>();
+    test<volatile std::atomic_ulong, unsigned long>();
+    test<volatile std::atomic_llong, long long>();
+    test<volatile std::atomic_ullong, unsigned long long>();
+    test<volatile std::atomic_char16_t, char16_t>();
+    test<volatile std::atomic_char32_t, char32_t>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<volatile std::atomic_wchar_t, wchar_t>();
+#endif
+
+    test<volatile std::atomic_int8_t,    int8_t>();
+    test<volatile std::atomic_uint8_t,  uint8_t>();
+    test<volatile std::atomic_int16_t,   int16_t>();
+    test<volatile std::atomic_uint16_t, uint16_t>();
+    test<volatile std::atomic_int32_t,   int32_t>();
+    test<volatile std::atomic_uint32_t, uint32_t>();
+    test<volatile std::atomic_int64_t,   int64_t>();
+    test<volatile std::atomic_uint64_t, uint64_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/integral_typedefs.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/integral_typedefs.pass.cpp
new file mode 100644
index 0000000..92bef95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/integral_typedefs.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// typedef atomic<char>               atomic_char;
+// typedef atomic<signed char>        atomic_schar;
+// typedef atomic<unsigned char>      atomic_uchar;
+// typedef atomic<short>              atomic_short;
+// typedef atomic<unsigned short>     atomic_ushort;
+// typedef atomic<int>                atomic_int;
+// typedef atomic<unsigned int>       atomic_uint;
+// typedef atomic<long>               atomic_long;
+// typedef atomic<unsigned long>      atomic_ulong;
+// typedef atomic<long long>          atomic_llong;
+// typedef atomic<unsigned long long> atomic_ullong;
+// typedef atomic<char8_t>            atomic_char8_t; // C++20
+// typedef atomic<char16_t>           atomic_char16_t;
+// typedef atomic<char32_t>           atomic_char32_t;
+// typedef atomic<wchar_t>            atomic_wchar_t;
+//
+// typedef atomic<intptr_t>           atomic_intptr_t;
+// typedef atomic<uintptr_t>          atomic_uintptr_t;
+//
+// typedef atomic<int8_t>             atomic_int8_t;
+// typedef atomic<uint8_t>            atomic_uint8_t;
+// typedef atomic<int16_t>            atomic_int16_t;
+// typedef atomic<uint16_t>           atomic_uint16_t;
+// typedef atomic<int32_t>            atomic_int32_t;
+// typedef atomic<uint32_t>           atomic_uint32_t;
+// typedef atomic<int64_t>            atomic_int64_t;
+// typedef atomic<uint64_t>           atomic_uint64_t;
+
+#include <atomic>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::atomic<char>, std::atomic_char>::value), "");
+    static_assert((std::is_same<std::atomic<signed char>, std::atomic_schar>::value), "");
+    static_assert((std::is_same<std::atomic<unsigned char>, std::atomic_uchar>::value), "");
+    static_assert((std::is_same<std::atomic<short>, std::atomic_short>::value), "");
+    static_assert((std::is_same<std::atomic<unsigned short>, std::atomic_ushort>::value), "");
+    static_assert((std::is_same<std::atomic<int>, std::atomic_int>::value), "");
+    static_assert((std::is_same<std::atomic<unsigned int>, std::atomic_uint>::value), "");
+    static_assert((std::is_same<std::atomic<long>, std::atomic_long>::value), "");
+    static_assert((std::is_same<std::atomic<unsigned long>, std::atomic_ulong>::value), "");
+    static_assert((std::is_same<std::atomic<long long>, std::atomic_llong>::value), "");
+    static_assert((std::is_same<std::atomic<unsigned long long>, std::atomic_ullong>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_same<std::atomic<wchar_t>, std::atomic_wchar_t>::value), "");
+#endif
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    static_assert((std::is_same<std::atomic<char8_t>, std::atomic_char8_t>::value), "");
+#endif
+    static_assert((std::is_same<std::atomic<char16_t>, std::atomic_char16_t>::value), "");
+    static_assert((std::is_same<std::atomic<char32_t>, std::atomic_char32_t>::value), "");
+
+//  Added by LWG 2441
+    static_assert((std::is_same<std::atomic<intptr_t>,  std::atomic_intptr_t>::value), "");
+    static_assert((std::is_same<std::atomic<uintptr_t>, std::atomic_uintptr_t>::value), "");
+
+    static_assert((std::is_same<std::atomic<int8_t>,    std::atomic_int8_t>::value), "");
+    static_assert((std::is_same<std::atomic<uint8_t>,   std::atomic_uint8_t>::value), "");
+    static_assert((std::is_same<std::atomic<int16_t>,   std::atomic_int16_t>::value), "");
+    static_assert((std::is_same<std::atomic<uint16_t>,  std::atomic_uint16_t>::value), "");
+    static_assert((std::is_same<std::atomic<int32_t>,   std::atomic_int32_t>::value), "");
+    static_assert((std::is_same<std::atomic<uint32_t>,  std::atomic_uint32_t>::value), "");
+    static_assert((std::is_same<std::atomic<int64_t>,   std::atomic_int64_t>::value), "");
+    static_assert((std::is_same<std::atomic<uint64_t>,  std::atomic_uint64_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/standard_layout.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/standard_layout.compile.pass.cpp
new file mode 100644
index 0000000..d7987ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/standard_layout.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <atomic>
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class Tp>
+struct CheckStandardLayout {
+  void operator()() const {
+    typedef std::atomic<Tp> Atomic;
+    static_assert(std::is_standard_layout<Atomic>::value, "");
+  }
+};
+
+int main(int, char**) {
+  TestEachIntegralType<CheckStandardLayout>()();
+  TestEachFloatingPointType<CheckStandardLayout>()();
+  TestEachPointerType<CheckStandardLayout>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/throw.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/throw.pass.cpp
new file mode 100644
index 0000000..3264100
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/throw.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-exceptions
+
+// <atomic>
+
+#include <atomic>
+#include <cassert>
+
+struct throwing {
+  throwing() { throw 42; }
+};
+
+int main(int, char**) {
+  try {
+    [[maybe_unused]] std::atomic<throwing> a;
+    assert(false);
+  } catch (int x) {
+    assert(x == 42);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.pass.cpp
new file mode 100644
index 0000000..296298c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+// struct atomic;
+
+// Make sure atomic<TriviallyCopyable> can be instantiated.
+
+#include <atomic>
+#include <new>
+#include <cassert>
+#include <chrono> // for nanoseconds
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_THREADS
+#  include <thread> // for thread_id
+#endif
+
+struct TriviallyCopyable {
+  explicit TriviallyCopyable(int i) : i_(i) { }
+  int i_;
+};
+
+template <class T>
+void test(T t) {
+  std::atomic<T> t0(t);
+}
+
+int main(int, char**) {
+  test(TriviallyCopyable(42));
+  test(std::chrono::nanoseconds(2));
+#ifndef TEST_HAS_NO_THREADS
+  test(std::this_thread::get_id());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp
new file mode 100644
index 0000000..707333a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template <class T>
+// struct atomic;
+
+// This test checks that we static_assert inside std::atomic<T> when T
+// is not trivially copyable, however Clang will sometimes emit additional
+// errors while trying to instantiate the rest of std::atomic<T>.
+// We silence those to make the test more robust.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error
+
+#include <atomic>
+
+struct NotTriviallyCopyable {
+  explicit NotTriviallyCopyable(int i) : i_(i) { }
+  NotTriviallyCopyable(const NotTriviallyCopyable &rhs) : i_(rhs.i_) { }
+  int i_;
+};
+
+void f() {
+  NotTriviallyCopyable x(42);
+  std::atomic<NotTriviallyCopyable> a(x); // expected-error@atomic:* {{std::atomic<T> requires that 'T' be a trivially copyable type}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.arith/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.arith/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.arith/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.pointer/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.pointer/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.pointer/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong.pass.cpp
new file mode 100644
index 0000000..e5cf6aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     bool
+//     atomic_compare_exchange_strong(volatile atomic<T>*,
+//                                    atomic<T>::value_type*,
+//                                    atomic<T>::value_type) noexcept;
+//
+// template <class T>
+//     bool
+//     atomic_compare_exchange_strong(atomic<T>*,
+//                                    atomic<T>::value_type*,
+//                                    atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        A a(t);
+        assert(std::atomic_compare_exchange_strong(&a, &t, T(2)) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_strong(&a, &t, T(3)) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_strong(&a, &t, T(3)));
+    }
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        volatile A a(t);
+        assert(std::atomic_compare_exchange_strong(&a, &t, T(2)) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_strong(&a, &t, T(3)) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_strong(&a, &t, T(3)));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong_explicit.pass.cpp
new file mode 100644
index 0000000..f039069
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_strong_explicit.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     bool
+//     atomic_compare_exchange_strong_explicit(volatile atomic<T>*,
+//                                             atomic<T>::value_type*,
+//                                             atomic<T>::value_type,
+//                                             memory_order, memory_order) noexcept;
+//
+// template <class T>
+//     bool
+//     atomic_compare_exchange_strong_explicit(atomic<T>*,
+//                                             atomic<T>::value_type*,
+//                                             atomic<T>::value_type,
+//                                             memory_order, memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        A a(t);
+        assert(std::atomic_compare_exchange_strong_explicit(&a, &t, T(2),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_strong_explicit(&a, &t, T(3),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_strong_explicit(&a, &t, T(3), std::memory_order_seq_cst,
+                                                                     std::memory_order_seq_cst));
+    }
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        volatile A a(t);
+        assert(std::atomic_compare_exchange_strong_explicit(&a, &t, T(2),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_strong_explicit(&a, &t, T(3),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_strong_explicit(&a, &t, T(3), std::memory_order_seq_cst,
+                                                                     std::memory_order_seq_cst));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak.pass.cpp
new file mode 100644
index 0000000..93b7ea5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     bool
+//     atomic_compare_exchange_weak(volatile atomic<T>*,
+//                                  atomic<T>::value_type*,
+//                                  atomic<T>::value_type) noexcept;
+//
+// template <class T>
+//     bool
+//     atomic_compare_exchange_weak(atomic<T>*,
+//                                  atomic<T>::value_type*,
+//                                  atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include <cmpxchg_loop.h>
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        A a(t);
+        assert(c_cmpxchg_weak_loop(&a, &t, T(2)) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_weak(&a, &t, T(3)) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_weak(&a, &t, T(3)));
+    }
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        volatile A a(t);
+        assert(c_cmpxchg_weak_loop(&a, &t, T(2)) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_weak(&a, &t, T(3)) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_weak(&a, &t, T(3)));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak_explicit.pass.cpp
new file mode 100644
index 0000000..41967bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_compare_exchange_weak_explicit.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     bool
+//     atomic_compare_exchange_weak_explicit(volatile atomic<T>*,
+//                                           atomic<T>::value_type*,
+//                                           atomic<T>::value_type,
+//                                           memory_order, memory_order) noexcept;
+//
+// template <class T>
+//     bool
+//     atomic_compare_exchange_weak_explicit(atomic<T>*,
+//                                           atomic<T>::value_type*,
+//                                           atomic<T>::value_type,
+//                                           memory_order, memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include <cmpxchg_loop.h>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        A a(t);
+        assert(c_cmpxchg_weak_loop(&a, &t, T(2),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_weak_explicit(&a, &t, T(3),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_weak_explicit(&a, &t, T(3), std::memory_order_seq_cst,
+                                                                   std::memory_order_seq_cst));
+    }
+    {
+        typedef std::atomic<T> A;
+        T t(T(1));
+        volatile A a(t);
+        assert(c_cmpxchg_weak_loop(&a, &t, T(2),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == true);
+        assert(a == T(2));
+        assert(t == T(1));
+        assert(std::atomic_compare_exchange_weak_explicit(&a, &t, T(3),
+               std::memory_order_seq_cst, std::memory_order_seq_cst) == false);
+        assert(a == T(2));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_compare_exchange_weak_explicit(&a, &t, T(3), std::memory_order_seq_cst,
+                                                                   std::memory_order_seq_cst));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange.pass.cpp
new file mode 100644
index 0000000..14d159a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     T
+//     atomic_exchange(volatile atomic<T>*, atomic<T>::value_type) noexcept;
+//
+// template <class T>
+//     T
+//     atomic_exchange(atomic<T>*, atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t(T(1));
+    assert(std::atomic_exchange(&t, T(2)) == T(1));
+    assert(t == T(2));
+    volatile A vt(T(3));
+    assert(std::atomic_exchange(&vt, T(4)) == T(3));
+    assert(vt == T(4));
+
+    ASSERT_NOEXCEPT(std::atomic_exchange(&t, T(2)));
+    ASSERT_NOEXCEPT(std::atomic_exchange(&vt, T(4)));
+  }
+};
+
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange_explicit.pass.cpp
new file mode 100644
index 0000000..9763279
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_exchange_explicit.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     T
+//     atomic_exchange_explicit(volatile atomic<T>*, atomic<T>::value_type,
+//                              memory_order) noexcept;
+//
+// template <class T>
+//     T
+//     atomic_exchange_explicit(atomic<T>*, atomic<T>::value_type,
+//                              memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t(T(1));
+    assert(std::atomic_exchange_explicit(&t, T(2), std::memory_order_seq_cst)
+           == T(1));
+    assert(t == T(2));
+    volatile A vt(T(3));
+    assert(std::atomic_exchange_explicit(&vt, T(4), std::memory_order_seq_cst)
+           == T(3));
+    assert(vt == T(4));
+
+    ASSERT_NOEXCEPT(std::atomic_exchange_explicit(&t, T(2), std::memory_order_seq_cst));
+    ASSERT_NOEXCEPT(std::atomic_exchange_explicit(&vt, T(4), std::memory_order_seq_cst));
+  }
+};
+
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.pass.cpp
new file mode 100644
index 0000000..3156378
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_add(volatile atomic<T>* obj, atomic<T>::difference_type) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_add(atomic<T>* obj, atomic<T>::difference_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_add(&t, T(2)) == T(1));
+        assert(t == T(3));
+        ASSERT_NOEXCEPT(std::atomic_fetch_add(&t, 0));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(1));
+        assert(std::atomic_fetch_add(&t, T(2)) == T(1));
+        assert(t == T(3));
+        ASSERT_NOEXCEPT(std::atomic_fetch_add(&t, 0));
+    }
+  }
+};
+
+template <class T>
+void testp()
+{
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        A t(&a[0]);
+        assert(std::atomic_fetch_add(&t, 2) == &a[0]);
+        std::atomic_fetch_add<T>(&t, 0);
+        assert(t == &a[2]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_add(&t, 0));
+    }
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        volatile A t(&a[0]);
+        assert(std::atomic_fetch_add(&t, 2) == &a[0]);
+        std::atomic_fetch_add<T>(&t, 0);
+        assert(t == &a[2]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_add(&t, 0));
+    }
+}
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+    testp<int*>();
+    testp<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.pass.cpp
new file mode 100644
index 0000000..747a62a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_add_explicit(volatile atomic<T>*, atomic<T>::difference_type,
+//                               memory_order) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_add_explicit(atomic<T>*, atomic<T>::difference_type,
+//                               memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_add_explicit(&t, T(2),
+                                            std::memory_order_seq_cst) == T(1));
+        assert(t == T(3));
+        ASSERT_NOEXCEPT(std::atomic_fetch_add_explicit(&t, 0, std::memory_order_relaxed));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(1));
+        assert(std::atomic_fetch_add_explicit(&t, T(2),
+                                            std::memory_order_seq_cst) == T(1));
+        assert(t == T(3));
+        ASSERT_NOEXCEPT(std::atomic_fetch_add_explicit(&t, 0, std::memory_order_relaxed));
+    }
+  }
+};
+
+template <class T>
+void
+testp()
+{
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        A t(&a[0]);
+        assert(std::atomic_fetch_add_explicit(&t, 2, std::memory_order_seq_cst) == &a[0]);
+        std::atomic_fetch_add_explicit<T>(&t, 0, std::memory_order_relaxed);
+        assert(t == &a[2]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_add_explicit(&t, 0, std::memory_order_relaxed));
+    }
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        volatile A t(&a[0]);
+        assert(std::atomic_fetch_add_explicit(&t, 2, std::memory_order_seq_cst) == &a[0]);
+        std::atomic_fetch_add_explicit<T>(&t, 0, std::memory_order_relaxed);
+        assert(t == &a[2]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_add_explicit(&t, 0, std::memory_order_relaxed));
+    }
+}
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+    testp<int*>();
+    testp<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and.pass.cpp
new file mode 100644
index 0000000..04b279c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_and(volatile atomic<T>*, atomic<T>::value_type) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_and(atomic<T>*, atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_and(&t, T(2)) == T(1));
+        assert(t == T(0));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_and(&t, T(2)));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_and(&t, T(2)) == T(3));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_and(&t, T(2)));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and_explicit.pass.cpp
new file mode 100644
index 0000000..f6887a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_and_explicit.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_and_explicit(volatile atomic<T>*, atomic<T>::value_type,
+//                               memory_order) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_and_explicit(atomic<T>*, atomic<T>::value_type,
+//                               memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_and_explicit(&t, T(2),
+               std::memory_order_seq_cst) == T(1));
+        assert(t == T(0));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_and_explicit(&t, T(2), std::memory_order_seq_cst));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_and_explicit(&t, T(2),
+               std::memory_order_seq_cst) == T(3));
+        assert(t == T(2));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_and_explicit(&t, T(2), std::memory_order_seq_cst));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or.pass.cpp
new file mode 100644
index 0000000..76a66dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_or(volatile atomic<T>*, atomic<T>::value_type) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_or(atomic<T>*, atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_or(&t, T(2)) == T(1));
+        assert(t == T(3));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_or(&t, T(2)));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_or(&t, T(2)) == T(3));
+        assert(t == T(3));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_or(&t, T(2)));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or_explicit.pass.cpp
new file mode 100644
index 0000000..7316123
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_or_explicit.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_or_explicit(volatile atomic<T>*, atomic<T>::value_type,
+//                              memory_order) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_or_explicit(atomic<T>*, atomic<T>::value_type,
+//                              memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_or_explicit(&t, T(2),
+               std::memory_order_seq_cst) == T(1));
+        assert(t == T(3));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_or_explicit(&t, T(2), std::memory_order_seq_cst));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_or_explicit(&t, T(2),
+               std::memory_order_seq_cst) == T(3));
+        assert(t == T(3));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_or_explicit(&t, T(2), std::memory_order_seq_cst));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.pass.cpp
new file mode 100644
index 0000000..37a9586
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_sub(volatile atomic<T>*, atomic<T>::difference_type) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_sub(atomic<T>*, atomic<T>::difference_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(3));
+        assert(std::atomic_fetch_sub(&t, T(2)) == T(3));
+        assert(t == T(1));
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub(&t, 0));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_sub(&t, T(2)) == T(3));
+        assert(t == T(1));
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub(&t, 0));
+    }
+  }
+};
+
+template <class T>
+void testp()
+{
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        A t(&a[2]);
+        assert(std::atomic_fetch_sub(&t, 2) == &a[2]);
+        std::atomic_fetch_sub<T>(&t, 0);
+        assert(t == &a[0]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub(&t, 0));
+    }
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        volatile A t(&a[2]);
+        assert(std::atomic_fetch_sub(&t, 2) == &a[2]);
+        std::atomic_fetch_sub<T>(&t, 0);
+        assert(t == &a[0]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub(&t, 0));
+    }
+}
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+    testp<int*>();
+    testp<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.pass.cpp
new file mode 100644
index 0000000..1924096
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_sub_explicit(volatile atomic<T>*, atomic<T>::difference_type,
+//                               memory_order) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_sub_explicit(atomic<T>*, atomic<T>::difference_type,
+//                               memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(3));
+        assert(std::atomic_fetch_sub_explicit(&t, T(2),
+                                            std::memory_order_seq_cst) == T(3));
+        assert(t == T(1));
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub_explicit(&t, 0, std::memory_order_relaxed));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_sub_explicit(&t, T(2),
+                                            std::memory_order_seq_cst) == T(3));
+        assert(t == T(1));
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub_explicit(&t, 0, std::memory_order_relaxed));
+    }
+  }
+};
+
+template <class T>
+void testp()
+{
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        A t(&a[2]);
+        assert(std::atomic_fetch_sub_explicit(&t, 2, std::memory_order_seq_cst) == &a[2]);
+        std::atomic_fetch_sub_explicit<T>(&t, 0, std::memory_order_relaxed);
+        assert(t == &a[0]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub_explicit(&t, 0, std::memory_order_relaxed));
+    }
+    {
+        typedef std::atomic<T> A;
+        typedef typename std::remove_pointer<T>::type X;
+        X a[3] = {0};
+        volatile A t(&a[2]);
+        assert(std::atomic_fetch_sub_explicit(&t, 2, std::memory_order_seq_cst) == &a[2]);
+        std::atomic_fetch_sub_explicit<T>(&t, 0, std::memory_order_relaxed);
+        assert(t == &a[0]);
+        ASSERT_NOEXCEPT(std::atomic_fetch_sub_explicit(&t, 0, std::memory_order_relaxed));
+    }
+}
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+    testp<int*>();
+    testp<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor.pass.cpp
new file mode 100644
index 0000000..3875f9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_xor(volatile atomic<T>*, atomic<T>::value_type) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_xor(atomic<T>*, atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_xor(&t, T(2)) == T(1));
+        assert(t == T(3));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_xor(&t, T(2)));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_xor(&t, T(2)) == T(3));
+        assert(t == T(1));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_xor(&t, T(2)));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor_explicit.pass.cpp
new file mode 100644
index 0000000..7521a02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_xor_explicit.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// template<class T>
+//     T
+//     atomic_fetch_xor_explicit(volatile atomic<T>*, atomic<T>::value_type,
+//                               memory_order) noexcept;
+//
+// template<class T>
+//     T
+//     atomic_fetch_xor_explicit(atomic<T>*, atomic<T>::value_type,
+//                               memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    {
+        typedef std::atomic<T> A;
+        A t(T(1));
+        assert(std::atomic_fetch_xor_explicit(&t, T(2),
+               std::memory_order_seq_cst) == T(1));
+        assert(t == T(3));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_xor_explicit(&t, T(2), std::memory_order_seq_cst));
+    }
+    {
+        typedef std::atomic<T> A;
+        volatile A t(T(3));
+        assert(std::atomic_fetch_xor_explicit(&t, T(2),
+               std::memory_order_seq_cst) == T(3));
+        assert(t == T(1));
+
+        ASSERT_NOEXCEPT(std::atomic_fetch_xor_explicit(&t, T(2), std::memory_order_seq_cst));
+    }
+  }
+};
+
+int main(int, char**)
+{
+    TestEachIntegralType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_init.pass.cpp
new file mode 100644
index 0000000..4dbf8fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_init.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <atomic>
+
+// template <class T>
+//     void
+//     atomic_init(volatile atomic<T>* obj, atomic<T>::value_type desr) noexcept;
+//
+// template <class T>
+//     void
+//     atomic_init(atomic<T>* obj, atomic<T>::value_type desr) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t;
+    std::atomic_init(&t, T(1));
+    assert(t == T(1));
+    volatile A vt;
+    std::atomic_init(&vt, T(2));
+    assert(vt == T(2));
+
+    ASSERT_NOEXCEPT(std::atomic_init(&t, T(1)));
+    ASSERT_NOEXCEPT(std::atomic_init(&vt, T(2)));
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_is_lock_free.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_is_lock_free.pass.cpp
new file mode 100644
index 0000000..8b838f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_is_lock_free.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !is-lockfree-runtime-function
+
+// <atomic>
+
+// template <class T>
+// bool atomic_is_lock_free(const volatile atomic<T>* obj) noexcept;
+//
+// template <class T>
+// bool atomic_is_lock_free(const atomic<T>* obj) noexcept;
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    T t = T();
+    A a(t);
+    bool b1 = std::atomic_is_lock_free(static_cast<const A*>(&a));
+    volatile A va(t);
+    bool b2 = std::atomic_is_lock_free(static_cast<const volatile A*>(&va));
+    assert(b1 == b2);
+
+    ASSERT_NOEXCEPT(std::atomic_is_lock_free(static_cast<const A*>(&a)));
+    ASSERT_NOEXCEPT(std::atomic_is_lock_free(static_cast<const volatile A*>(&va)));
+  }
+};
+
+struct A {
+  char x[4];
+};
+
+int main(int, char**) {
+  TestFn<A>()();
+  TestEachAtomicType<TestFn>()();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load.pass.cpp
new file mode 100644
index 0000000..c8d103c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     T
+//     atomic_load(const volatile atomic<T>*) noexcept;
+//
+// template <class T>
+//     T
+//     atomic_load(const atomic<T>*) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t(T(1));
+    assert(std::atomic_load(&t) == T(1));
+    volatile A vt(T(2));
+    assert(std::atomic_load(&vt) == T(2));
+
+    ASSERT_NOEXCEPT(std::atomic_load(&t));
+    ASSERT_NOEXCEPT(std::atomic_load(&vt));
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load_explicit.pass.cpp
new file mode 100644
index 0000000..cb9dc1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_load_explicit.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     T
+//     atomic_load_explicit(const volatile atomic<T>*, memory_order) noexcept;
+//
+// template <class T>
+//     T
+//     atomic_load_explicit(const atomic<T>*, memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t(T(1));
+    assert(std::atomic_load_explicit(&t, std::memory_order_seq_cst) == T(1));
+    volatile A vt(T(2));
+    assert(std::atomic_load_explicit(&vt, std::memory_order_seq_cst) == T(2));
+
+    ASSERT_NOEXCEPT(std::atomic_load_explicit(&t, std::memory_order_seq_cst));
+    ASSERT_NOEXCEPT(std::atomic_load_explicit(&vt, std::memory_order_seq_cst));
+  }
+};
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store.pass.cpp
new file mode 100644
index 0000000..5915220
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     void
+//     atomic_store(volatile atomic<T>*, atomic<T>::value_type) noexcept;
+//
+// template <class T>
+//     void
+//     atomic_store(atomic<T>*, atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t;
+    std::atomic_store(&t, T(1));
+    assert(t == T(1));
+    volatile A vt;
+    std::atomic_store(&vt, T(2));
+    assert(vt == T(2));
+
+    ASSERT_NOEXCEPT(std::atomic_store(&t, T(1)));
+    ASSERT_NOEXCEPT(std::atomic_store(&vt, T(2)));
+  }
+};
+
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store_explicit.pass.cpp
new file mode 100644
index 0000000..e9e15a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_store_explicit.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: !non-lockfree-atomics
+
+// <atomic>
+
+// template <class T>
+//     void
+//     atomic_store_explicit(volatile atomic<T>*, atomic<T>::value_type,
+//                           memory_order) noexcept;
+//
+// template <class T>
+//     void
+//     atomic_store_explicit(atomic<T>*, atomic<T>::value_type,
+//                           memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    A t;
+    std::atomic_store_explicit(&t, T(1), std::memory_order_seq_cst);
+    assert(t == T(1));
+    volatile A vt;
+    std::atomic_store_explicit(&vt, T(2), std::memory_order_seq_cst);
+    assert(vt == T(2));
+
+    ASSERT_NOEXCEPT(std::atomic_store_explicit(&t, T(1), std::memory_order_seq_cst));
+    ASSERT_NOEXCEPT(std::atomic_store_explicit(&vt, T(2), std::memory_order_seq_cst));
+  }
+};
+
+
+int main(int, char**)
+{
+    TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_var_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_var_init.pass.cpp
new file mode 100644
index 0000000..ea833c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/atomic_var_init.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <atomic>
+
+// #define ATOMIC_VAR_INIT(value)
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::atomic<int> v = ATOMIC_VAR_INIT(5);
+    assert(v == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/copy.assign.ptr.volatile.verify.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/copy.assign.ptr.volatile.verify.cpp
new file mode 100644
index 0000000..2d1acb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/copy.assign.ptr.volatile.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// std::atomic
+
+// atomic& operator=( const atomic& ) volatile = delete;
+
+#include <atomic>
+
+int main(int, char**)
+{
+    volatile std::atomic<int*> obj1;
+    std::atomic<int*> obj2;
+    obj1 = obj2; // expected-error {{overload resolution selected deleted operator '='}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/copy.assign.volatile.verify.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/copy.assign.volatile.verify.cpp
new file mode 100644
index 0000000..07e1181
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/copy.assign.volatile.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// std::atomic
+
+// atomic& operator=( const atomic& ) volatile = delete;
+
+#include <atomic>
+
+int main(int, char**)
+{
+  volatile std::atomic<int> obj1;
+  std::atomic<int> obj2;
+  obj1 = obj2; // expected-error {{overload resolution selected deleted operator '='}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/ctor.pass.cpp
new file mode 100644
index 0000000..32baca4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/ctor.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <atomic>
+
+// constexpr atomic<T>::atomic(T value)
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+struct UserType {
+  int i;
+
+  UserType() noexcept {}
+  constexpr explicit UserType(int d) noexcept : i(d) {}
+
+  friend bool operator==(const UserType& x, const UserType& y) { return x.i == y.i; }
+};
+
+template <class Tp>
+struct TestFunc {
+  void operator()() const {
+    typedef std::atomic<Tp> Atomic;
+    constexpr Tp t(42);
+    {
+      constexpr Atomic a(t);
+      assert(a == t);
+    }
+    {
+      constexpr Atomic a{t};
+      assert(a == t);
+    }
+  }
+};
+
+int main(int, char**) {
+  TestFunc<UserType>()();
+  TestEachIntegralType<TestFunc>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/dtor.pass.cpp
new file mode 100644
index 0000000..2ecb580
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.req/dtor.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <atomic>
+
+// constexpr atomic<T>::~atomic()
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class Tp>
+struct CheckTriviallyDestructible {
+  void operator()() const {
+    typedef std::atomic<Tp> Atomic;
+    static_assert(std::is_trivially_destructible<Atomic>::value, "");
+  }
+};
+
+int main(int, char**) {
+  TestEachIntegralType<CheckTriviallyDestructible>()();
+  TestEachFloatingPointType<CheckTriviallyDestructible>()();
+  TestEachPointerType<CheckTriviallyDestructible>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.templ/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.templ/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.templ/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_notify_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_notify_all.pass.cpp
new file mode 100644
index 0000000..92908bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_notify_all.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// XFAIL: c++03
+// XFAIL: !non-lockfree-atomics
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <atomic>
+
+// template<class T>
+//     void
+//     atomic_notify_all(volatile atomic<T>*) noexcept;
+//
+// template<class T>
+//     void
+//     atomic_notify_all(atomic<T>*) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+
+    {
+      A a(T(1));
+      static_assert(noexcept(std::atomic_notify_all(&a)), "");
+      auto f = [&]() {
+        assert(std::atomic_load(&a) == T(1));
+        std::atomic_wait(&a, T(1));
+        assert(std::atomic_load(&a) == T(3));
+      };
+      std::thread t1 = support::make_test_thread(f);
+      std::thread t2 = support::make_test_thread(f);
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+      std::atomic_store(&a, T(3));
+      std::atomic_notify_all(&a);
+      t1.join();
+      t2.join();
+    }
+    {
+      volatile A a(T(2));
+      static_assert(noexcept(std::atomic_notify_all(&a)), "");
+      auto f = [&]() {
+        assert(std::atomic_load(&a) == T(2));
+        std::atomic_wait(&a, T(2));
+        assert(std::atomic_load(&a) == T(4));
+      };
+      std::thread t1 = support::make_test_thread(f);
+      std::thread t2 = support::make_test_thread(f);
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+      std::atomic_store(&a, T(4));
+      std::atomic_notify_all(&a);
+      t1.join();
+      t2.join();
+    }
+  }
+};
+
+int main(int, char**) {
+  TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_notify_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_notify_one.pass.cpp
new file mode 100644
index 0000000..5f8afa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_notify_one.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// XFAIL: c++03
+// XFAIL: !non-lockfree-atomics
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <atomic>
+
+// template<class T>
+//     void
+//     atomic_notify_one(volatile atomic<T>*) noexcept;
+//
+// template<class T>
+//     void
+//     atomic_notify_one(atomic<T>*) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+
+    {
+      A a(T(1));
+      static_assert(noexcept(std::atomic_notify_one(&a)), "");
+      std::thread t = support::make_test_thread([&]() {
+        std::atomic_store(&a, T(3));
+        std::atomic_notify_one(&a);
+      });
+      std::atomic_wait(&a, T(1));
+      assert(std::atomic_load(&a) == T(3));
+      t.join();
+    }
+    {
+      volatile A a(T(2));
+      static_assert(noexcept(std::atomic_notify_one(&a)), "");
+      std::thread t = support::make_test_thread([&]() {
+        std::atomic_store(&a, T(4));
+        std::atomic_notify_one(&a);
+      });
+      std::atomic_wait(&a, T(2));
+      assert(std::atomic_load(&a) == T(4));
+      t.join();
+    }
+  }
+};
+
+int main(int, char**) {
+  TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_wait.pass.cpp
new file mode 100644
index 0000000..2d4890e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_wait.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// XFAIL: c++03
+// XFAIL: !non-lockfree-atomics
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <atomic>
+
+// template<class T>
+//     void
+//     atomic_wait(const volatile atomic<T>*, atomic<T>::value_type) noexcept;
+//
+// template<class T>
+//     void
+//     atomic_wait(const atomic<T>*, atomic<T>::value_type) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    {
+      A t(T(1));
+      static_assert(noexcept(std::atomic_wait(&t, T(0))), "");
+      assert(std::atomic_load(&t) == T(1));
+      std::atomic_wait(&t, T(0));
+      std::thread t1 = support::make_test_thread([&]() {
+        std::atomic_store(&t, T(3));
+        std::atomic_notify_one(&t);
+      });
+      std::atomic_wait(&t, T(1));
+      assert(std::atomic_load(&t) == T(3));
+      t1.join();
+    }
+    {
+      volatile A vt(T(2));
+      static_assert(noexcept(std::atomic_wait(&vt, T(0))), "");
+      assert(std::atomic_load(&vt) == T(2));
+      std::atomic_wait(&vt, T(1));
+      std::thread t2 = support::make_test_thread([&]() {
+        std::atomic_store(&vt, T(4));
+        std::atomic_notify_one(&vt);
+      });
+      std::atomic_wait(&vt, T(2));
+      assert(std::atomic_load(&vt) == T(4));
+      t2.join();
+    }
+  }
+};
+
+int main(int, char**) {
+  TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_wait_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_wait_explicit.pass.cpp
new file mode 100644
index 0000000..00d1ce0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/atomics.types.operations/atomics.types.operations.wait/atomic_wait_explicit.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// XFAIL: c++03
+// XFAIL: !non-lockfree-atomics
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <atomic>
+
+// template<class T>
+//     void
+//     atomic_wait_explicit(const volatile atomic<T>*, atomic<T>::value_type,
+//                          memory_order) noexcept;
+//
+// template<class T>
+//     void
+//     atomic_wait_explicit(const volatile atomic<T>*, atomic<T>::value_type,
+//                          memory_order) noexcept;
+
+#include <atomic>
+#include <type_traits>
+#include <cassert>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+#include "atomic_helpers.h"
+
+template <class T>
+struct TestFn {
+  void operator()() const {
+    typedef std::atomic<T> A;
+    {
+      A t(T(1));
+      static_assert(noexcept(std::atomic_wait_explicit(&t, T(0), std::memory_order_seq_cst)), "");
+      assert(std::atomic_load(&t) == T(1));
+      std::atomic_wait_explicit(&t, T(0), std::memory_order_seq_cst);
+      std::thread t1 = support::make_test_thread([&]() {
+        std::atomic_store(&t, T(3));
+        std::atomic_notify_one(&t);
+      });
+      std::atomic_wait_explicit(&t, T(1), std::memory_order_seq_cst);
+      assert(std::atomic_load(&t) == T(3));
+      t1.join();
+    }
+    {
+      volatile A vt(T(2));
+      static_assert(noexcept(std::atomic_wait_explicit(&vt, T(0), std::memory_order_seq_cst)), "");
+      assert(std::atomic_load(&vt) == T(2));
+      std::atomic_wait_explicit(&vt, T(1), std::memory_order_seq_cst);
+      std::thread t2 = support::make_test_thread([&]() {
+        std::atomic_store(&vt, T(4));
+        std::atomic_notify_one(&vt);
+      });
+      std::atomic_wait_explicit(&vt, T(2), std::memory_order_seq_cst);
+      assert(std::atomic_load(&vt) == T(4));
+      t2.join();
+    }
+  }
+};
+
+int main(int, char**) {
+  TestEachAtomicType<TestFn>()();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/stdatomic.h.syn/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/stdatomic.h.syn/types.compile.pass.cpp
new file mode 100644
index 0000000..5d0a285
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/stdatomic.h.syn/types.compile.pass.cpp
@@ -0,0 +1,237 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: no-threads
+
+// <stdatomic.h>
+
+// template<class T>
+//   using std-atomic = std::atomic<T>;        // exposition only
+//
+// #define _Atomic(T) std-atomic<T>
+//
+// #define ATOMIC_BOOL_LOCK_FREE see below
+// #define ATOMIC_CHAR_LOCK_FREE see below
+// #define ATOMIC_CHAR16_T_LOCK_FREE see below
+// #define ATOMIC_CHAR32_T_LOCK_FREE see below
+// #define ATOMIC_WCHAR_T_LOCK_FREE see below
+// #define ATOMIC_SHORT_LOCK_FREE see below
+// #define ATOMIC_INT_LOCK_FREE see below
+// #define ATOMIC_LONG_LOCK_FREE see below
+// #define ATOMIC_LLONG_LOCK_FREE see below
+// #define ATOMIC_POINTER_LOCK_FREE see below
+//
+// using std::memory_order                // see below
+// using std::memory_order_relaxed        // see below
+// using std::memory_order_consume        // see below
+// using std::memory_order_acquire        // see below
+// using std::memory_order_release        // see below
+// using std::memory_order_acq_rel        // see below
+// using std::memory_order_seq_cst        // see below
+//
+// using std::atomic_flag                 // see below
+//
+// using std::atomic_bool                 // see below
+// using std::atomic_char                 // see below
+// using std::atomic_schar                // see below
+// using std::atomic_uchar                // see below
+// using std::atomic_short                // see below
+// using std::atomic_ushort               // see below
+// using std::atomic_int                  // see below
+// using std::atomic_uint                 // see below
+// using std::atomic_long                 // see below
+// using std::atomic_ulong                // see below
+// using std::atomic_llong                // see below
+// using std::atomic_ullong               // see below
+// using std::atomic_char8_t              // see below
+// using std::atomic_char16_t             // see below
+// using std::atomic_char32_t             // see below
+// using std::atomic_wchar_t              // see below
+// using std::atomic_int8_t               // see below
+// using std::atomic_uint8_t              // see below
+// using std::atomic_int16_t              // see below
+// using std::atomic_uint16_t             // see below
+// using std::atomic_int32_t              // see below
+// using std::atomic_uint32_t             // see below
+// using std::atomic_int64_t              // see below
+// using std::atomic_uint64_t             // see below
+// using std::atomic_int_least8_t         // see below
+// using std::atomic_uint_least8_t        // see below
+// using std::atomic_int_least16_t        // see below
+// using std::atomic_uint_least16_t       // see below
+// using std::atomic_int_least32_t        // see below
+// using std::atomic_uint_least32_t       // see below
+// using std::atomic_int_least64_t        // see below
+// using std::atomic_uint_least64_t       // see below
+// using std::atomic_int_fast8_t          // see below
+// using std::atomic_uint_fast8_t         // see below
+// using std::atomic_int_fast16_t         // see below
+// using std::atomic_uint_fast16_t        // see below
+// using std::atomic_int_fast32_t         // see below
+// using std::atomic_uint_fast32_t        // see below
+// using std::atomic_int_fast64_t         // see below
+// using std::atomic_uint_fast64_t        // see below
+// using std::atomic_intptr_t             // see below
+// using std::atomic_uintptr_t            // see below
+// using std::atomic_size_t               // see below
+// using std::atomic_ptrdiff_t            // see below
+// using std::atomic_intmax_t             // see below
+// using std::atomic_uintmax_t            // see below
+//
+// using std::atomic_is_lock_free                         // see below
+// using std::atomic_load                                 // see below
+// using std::atomic_load_explicit                        // see below
+// using std::atomic_store                                // see below
+// using std::atomic_store_explicit                       // see below
+// using std::atomic_exchange                             // see below
+// using std::atomic_exchange_explicit                    // see below
+// using std::atomic_compare_exchange_strong              // see below
+// using std::atomic_compare_exchange_strong_explicit     // see below
+// using std::atomic_compare_exchange_weak                // see below
+// using std::atomic_compare_exchange_weak_explicit       // see below
+// using std::atomic_fetch_add                            // see below
+// using std::atomic_fetch_add_explicit                   // see below
+// using std::atomic_fetch_sub                            // see below
+// using std::atomic_fetch_sub_explicit                   // see below
+// using std::atomic_fetch_or                             // see below
+// using std::atomic_fetch_or_explicit                    // see below
+// using std::atomic_fetch_and                            // see below
+// using std::atomic_fetch_and_explicit                   // see below
+// using std::atomic_flag_test_and_set                    // see below
+// using std::atomic_flag_test_and_set_explicit           // see below
+// using std::atomic_flag_clear                           // see below
+// using std::atomic_flag_clear_explicit                  // see below
+//
+// using std::atomic_thread_fence                         // see below
+// using std::atomic_signal_fence                         // see below
+
+#include <stdatomic.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::atomic<bool>::is_always_lock_free == (2 == ATOMIC_BOOL_LOCK_FREE));
+static_assert(std::atomic<char>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE));
+static_assert(std::atomic<signed char>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE));
+static_assert(std::atomic<unsigned char>::is_always_lock_free == (2 == ATOMIC_CHAR_LOCK_FREE));
+static_assert(std::atomic<char16_t>::is_always_lock_free == (2 == ATOMIC_CHAR16_T_LOCK_FREE));
+static_assert(std::atomic<char32_t>::is_always_lock_free == (2 == ATOMIC_CHAR32_T_LOCK_FREE));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::atomic<wchar_t>::is_always_lock_free == (2 == ATOMIC_WCHAR_T_LOCK_FREE));
+#endif
+static_assert(std::atomic<short>::is_always_lock_free == (2 == ATOMIC_SHORT_LOCK_FREE));
+static_assert(std::atomic<unsigned short>::is_always_lock_free == (2 == ATOMIC_SHORT_LOCK_FREE));
+static_assert(std::atomic<int>::is_always_lock_free == (2 == ATOMIC_INT_LOCK_FREE));
+static_assert(std::atomic<unsigned int>::is_always_lock_free == (2 == ATOMIC_INT_LOCK_FREE));
+static_assert(std::atomic<long>::is_always_lock_free == (2 == ATOMIC_LONG_LOCK_FREE));
+static_assert(std::atomic<unsigned long>::is_always_lock_free == (2 == ATOMIC_LONG_LOCK_FREE));
+static_assert(std::atomic<long long>::is_always_lock_free == (2 == ATOMIC_LLONG_LOCK_FREE));
+static_assert(std::atomic<unsigned long long>::is_always_lock_free == (2 == ATOMIC_LLONG_LOCK_FREE));
+static_assert(std::atomic<void*>::is_always_lock_free == (2 == ATOMIC_POINTER_LOCK_FREE));
+static_assert(std::atomic<std::nullptr_t>::is_always_lock_free == (2 == ATOMIC_POINTER_LOCK_FREE));
+
+void f() {
+  static_assert(std::is_same_v<std::atomic<char>, _Atomic(char)>);
+  static_assert(std::is_same_v<std::atomic<int>, _Atomic(int)>);
+  static_assert(std::is_same_v<std::atomic<const long>, _Atomic(const long)>);
+
+  static_assert(std::is_same_v<std::memory_order, ::memory_order>);
+  static_assert(std::memory_order_relaxed == ::memory_order_relaxed);
+  static_assert(std::memory_order_consume == ::memory_order_consume);
+  static_assert(std::memory_order_acquire == ::memory_order_acquire);
+  static_assert(std::memory_order_release == ::memory_order_release);
+  static_assert(std::memory_order_acq_rel == ::memory_order_acq_rel);
+  static_assert(std::memory_order_seq_cst == ::memory_order_seq_cst);
+
+  static_assert(std::is_same_v<std::atomic_flag, ::atomic_flag>);
+
+  static_assert(std::is_same_v<std::atomic<bool>, ::atomic_bool>);
+  static_assert(std::is_same_v<std::atomic<char>, ::atomic_char>);
+  static_assert(std::is_same_v<std::atomic<signed char>, ::atomic_schar>);
+  static_assert(std::is_same_v<std::atomic<unsigned char>, ::atomic_uchar>);
+  static_assert(std::is_same_v<std::atomic<short>, ::atomic_short>);
+  static_assert(std::is_same_v<std::atomic<unsigned short>, ::atomic_ushort>);
+  static_assert(std::is_same_v<std::atomic<int>, ::atomic_int>);
+  static_assert(std::is_same_v<std::atomic<unsigned int>, ::atomic_uint>);
+  static_assert(std::is_same_v<std::atomic<long>, ::atomic_long>);
+  static_assert(std::is_same_v<std::atomic<unsigned long>, ::atomic_ulong>);
+  static_assert(std::is_same_v<std::atomic<long long>, ::atomic_llong>);
+  static_assert(std::is_same_v<std::atomic<unsigned long long>, ::atomic_ullong>);
+
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+  static_assert(std::is_same_v<std::atomic<char8_t>,  ::atomic_char8_t>);
+#endif
+  static_assert(std::is_same_v<std::atomic<char16_t>, ::atomic_char16_t>);
+  static_assert(std::is_same_v<std::atomic<char32_t>, ::atomic_char32_t>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  static_assert(std::is_same_v<std::atomic<wchar_t>,  ::atomic_wchar_t>);
+#endif
+
+  static_assert(std::is_same_v<std::atomic<int8_t>,   ::atomic_int8_t>);
+  static_assert(std::is_same_v<std::atomic<uint8_t>,  ::atomic_uint8_t>);
+  static_assert(std::is_same_v<std::atomic<int16_t>,  ::atomic_int16_t>);
+  static_assert(std::is_same_v<std::atomic<uint16_t>, ::atomic_uint16_t>);
+  static_assert(std::is_same_v<std::atomic<int32_t>,  ::atomic_int32_t>);
+  static_assert(std::is_same_v<std::atomic<uint32_t>, ::atomic_uint32_t>);
+  static_assert(std::is_same_v<std::atomic<int64_t>,  ::atomic_int64_t>);
+  static_assert(std::is_same_v<std::atomic<uint64_t>, ::atomic_uint64_t>);
+
+  static_assert(std::is_same_v<std::atomic<int_least8_t>,   ::atomic_int_least8_t>);
+  static_assert(std::is_same_v<std::atomic<uint_least8_t>,  ::atomic_uint_least8_t>);
+  static_assert(std::is_same_v<std::atomic<int_least16_t>,  ::atomic_int_least16_t>);
+  static_assert(std::is_same_v<std::atomic<uint_least16_t>, ::atomic_uint_least16_t>);
+  static_assert(std::is_same_v<std::atomic<int_least32_t>,  ::atomic_int_least32_t>);
+  static_assert(std::is_same_v<std::atomic<uint_least32_t>, ::atomic_uint_least32_t>);
+  static_assert(std::is_same_v<std::atomic<int_least64_t>,  ::atomic_int_least64_t>);
+  static_assert(std::is_same_v<std::atomic<uint_least64_t>, ::atomic_uint_least64_t>);
+
+  static_assert(std::is_same_v<std::atomic<int_fast8_t>,    ::atomic_int_fast8_t>);
+  static_assert(std::is_same_v<std::atomic<uint_fast8_t>,   ::atomic_uint_fast8_t>);
+  static_assert(std::is_same_v<std::atomic<int_fast16_t>,   ::atomic_int_fast16_t>);
+  static_assert(std::is_same_v<std::atomic<uint_fast16_t>,  ::atomic_uint_fast16_t>);
+  static_assert(std::is_same_v<std::atomic<int_fast32_t>,   ::atomic_int_fast32_t>);
+  static_assert(std::is_same_v<std::atomic<uint_fast32_t>,  ::atomic_uint_fast32_t>);
+  static_assert(std::is_same_v<std::atomic<int_fast64_t>,   ::atomic_int_fast64_t>);
+  static_assert(std::is_same_v<std::atomic<uint_fast64_t>,  ::atomic_uint_fast64_t>);
+
+  static_assert(std::is_same_v<std::atomic<intptr_t>,  ::atomic_intptr_t>);
+  static_assert(std::is_same_v<std::atomic<uintptr_t>, ::atomic_uintptr_t>);
+  static_assert(std::is_same_v<std::atomic<size_t>,    ::atomic_size_t>);
+  static_assert(std::is_same_v<std::atomic<ptrdiff_t>, ::atomic_ptrdiff_t>);
+  static_assert(std::is_same_v<std::atomic<intmax_t>,  ::atomic_intmax_t>);
+  static_assert(std::is_same_v<std::atomic<uintmax_t>, ::atomic_uintmax_t>);
+
+  // Just check that the symbols in the global namespace are visible.
+  using ::atomic_compare_exchange_strong;
+  using ::atomic_compare_exchange_strong_explicit;
+  using ::atomic_compare_exchange_weak;
+  using ::atomic_compare_exchange_weak_explicit;
+  using ::atomic_exchange;
+  using ::atomic_exchange_explicit;
+  using ::atomic_fetch_add;
+  using ::atomic_fetch_add_explicit;
+  using ::atomic_fetch_and;
+  using ::atomic_fetch_and_explicit;
+  using ::atomic_fetch_or;
+  using ::atomic_fetch_or_explicit;
+  using ::atomic_fetch_sub;
+  using ::atomic_fetch_sub_explicit;
+  using ::atomic_flag_clear;
+  using ::atomic_flag_clear_explicit;
+  using ::atomic_flag_test_and_set;
+  using ::atomic_flag_test_and_set_explicit;
+  using ::atomic_is_lock_free;
+  using ::atomic_load;
+  using ::atomic_load_explicit;
+  using ::atomic_store;
+  using ::atomic_store_explicit;
+
+  using ::atomic_signal_fence;
+  using ::atomic_thread_fence;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/atomics/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/atomics/types.pass.cpp
new file mode 100644
index 0000000..f95f7a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/atomics/types.pass.cpp
@@ -0,0 +1,185 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <atomic>
+
+// Test nested types
+
+// template <class T>
+// class atomic
+// {
+// public:
+//     typedef T value_type;
+// };
+
+#include <atomic>
+#include <chrono>
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_THREADS
+#  include <thread>
+#endif
+
+template <class A, bool Integral>
+struct test_atomic
+{
+    test_atomic()
+    {
+        A a; (void)a;
+#if TEST_STD_VER >= 17
+    static_assert((std::is_same_v<typename A::value_type, decltype(a.load())>), "");
+#endif
+    }
+};
+
+template <class A>
+struct test_atomic<A, true>
+{
+    test_atomic()
+    {
+        A a; (void)a;
+#if TEST_STD_VER >= 17
+    static_assert((std::is_same_v<typename A::value_type, decltype(a.load())>), "");
+    static_assert((std::is_same_v<typename A::value_type, typename A::difference_type>), "");
+#endif
+    }
+};
+
+template <class A>
+struct test_atomic<A*, false>
+{
+    test_atomic()
+    {
+        A a; (void)a;
+#if TEST_STD_VER >= 17
+    static_assert((std::is_same_v<typename A::value_type, decltype(a.load())>), "");
+    static_assert((std::is_same_v<typename A::difference_type, ptrdiff_t>), "");
+#endif
+    }
+};
+
+template <class T>
+void
+test()
+{
+    using A = std::atomic<T>;
+#if TEST_STD_VER >= 17
+    static_assert((std::is_same_v<typename A::value_type, T>), "");
+#endif
+    test_atomic<A, std::is_integral<T>::value && !std::is_same<T, bool>::value>();
+}
+
+struct TriviallyCopyable {
+    int i_;
+};
+
+struct WeirdTriviallyCopyable
+{
+    char i, j, k; /* the 3 chars of doom */
+};
+
+struct PaddedTriviallyCopyable
+{
+    char i; int j; /* probably lock-free? */
+};
+
+struct LargeTriviallyCopyable
+{
+    int i, j[127]; /* decidedly not lock-free */
+};
+
+int main(int, char**)
+{
+    test<bool>               ();
+    test<char>               ();
+    test<signed char>        ();
+    test<unsigned char>      ();
+    test<short>              ();
+    test<unsigned short>     ();
+    test<int>                ();
+    test<unsigned int>       ();
+    test<long>               ();
+    test<unsigned long>      ();
+    test<long long>          ();
+    test<unsigned long long> ();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>            ();
+#endif
+    test<char16_t>           ();
+    test<char32_t>           ();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>            ();
+#endif
+
+    test<int_least8_t>   ();
+    test<uint_least8_t>  ();
+    test<int_least16_t>  ();
+    test<uint_least16_t> ();
+    test<int_least32_t>  ();
+    test<uint_least32_t> ();
+    test<int_least64_t>  ();
+    test<uint_least64_t> ();
+
+    test<int_fast8_t>   ();
+    test<uint_fast8_t>  ();
+    test<int_fast16_t>  ();
+    test<uint_fast16_t> ();
+    test<int_fast32_t>  ();
+    test<uint_fast32_t> ();
+    test<int_fast64_t>  ();
+    test<uint_fast64_t> ();
+
+    test< int8_t>  ();
+    test<uint8_t>  ();
+    test< int16_t> ();
+    test<uint16_t> ();
+    test< int32_t> ();
+    test<uint32_t> ();
+    test< int64_t> ();
+    test<uint64_t> ();
+
+    test<intptr_t>  ();
+    test<uintptr_t> ();
+    test<size_t>    ();
+    test<ptrdiff_t> ();
+    test<intmax_t>  ();
+    test<uintmax_t> ();
+
+    test<uintmax_t> ();
+    test<uintmax_t> ();
+
+    test<TriviallyCopyable>();
+    test<PaddedTriviallyCopyable>();
+#ifndef __APPLE__ // Apple doesn't ship libatomic
+    /*
+        These aren't going to be lock-free,
+        so some libatomic.a is necessary.
+    */
+    test<WeirdTriviallyCopyable>();
+    test<LargeTriviallyCopyable>();
+#endif
+
+#ifndef TEST_HAS_NO_THREADS
+    test<std::thread::id>();
+#endif
+    test<std::chrono::nanoseconds>();
+    test<float>();
+
+#if TEST_STD_VER >= 20
+    test<std::atomic_signed_lock_free::value_type>();
+    test<std::atomic_unsigned_lock_free::value_type>();
+/*
+    test<std::shared_ptr<int>>();
+*/
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.equiv/equivalence_relation.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.equiv/equivalence_relation.compile.pass.cpp
new file mode 100644
index 0000000..cdfa340
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.equiv/equivalence_relation.compile.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept equivalence_relation;
+
+#include <concepts>
+
+static_assert(std::equivalence_relation<bool(int, int), int, int>);
+static_assert(std::equivalence_relation<bool(int, int), double, double>);
+static_assert(std::equivalence_relation<bool(int, double), double, double>);
+
+static_assert(!std::equivalence_relation<bool (*)(), int, double>);
+static_assert(!std::equivalence_relation<bool (*)(int), int, double>);
+static_assert(!std::equivalence_relation<bool (*)(double), int, double>);
+
+static_assert(
+    !std::equivalence_relation<bool(double, double*), double, double*>);
+static_assert(!std::equivalence_relation<bool(int&, int&), double&, double&>);
+
+struct S1 {};
+static_assert(std::relation<bool (S1::*)(S1*), S1*, S1*>);
+static_assert(std::relation<bool (S1::*)(S1&), S1&, S1&>);
+
+struct S2 {};
+
+struct P1 {
+  bool operator()(S1, S1) const;
+};
+static_assert(std::equivalence_relation<P1, S1, S1>);
+
+struct P2 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+};
+static_assert(!std::equivalence_relation<P2, S1, S2>);
+
+struct P3 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+};
+static_assert(!std::equivalence_relation<P3, S1, S2>);
+
+struct P4 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+  bool operator()(S2, S2) const;
+};
+static_assert(std::equivalence_relation<P4, S1, S2>);
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.equiv/equivalence_relation.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.equiv/equivalence_relation.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..8d09663
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.equiv/equivalence_relation.subsumption.compile.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept equivalence_relation;
+
+#include <concepts>
+
+struct S1 {};
+struct S2 {};
+
+struct R {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+  bool operator()(S2, S2) const;
+};
+
+// clang-format off
+template<class F, class T, class U>
+requires std::relation<F, T, U>
+constexpr bool check_equivalence_relation_subsumes_relation() {
+  return false;
+}
+
+template<class F, class T, class U>
+requires std::equivalence_relation<F, T, U> && true
+constexpr bool check_equivalence_relation_subsumes_relation() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_equivalence_relation_subsumes_relation<int (*)(int, int), int, int>());
+static_assert(check_equivalence_relation_subsumes_relation<int (*)(int, double), int, double>());
+static_assert(check_equivalence_relation_subsumes_relation<R, S1, S1>());
+static_assert(check_equivalence_relation_subsumes_relation<R, S1, S2>());
+
+// clang-format off
+template<class F, class T, class U>
+requires std::relation<F, T, U> && true
+constexpr bool check_relation_subsumes_equivalence_relation() {
+  return true;
+}
+
+template<class F, class T, class U>
+requires std::equivalence_relation<F, T, U>
+constexpr bool check_relation_subsumes_equivalence_relation() {
+  return false;
+}
+// clang-format on
+
+static_assert(check_relation_subsumes_equivalence_relation<int (*)(int, int), int, int>());
+static_assert(check_relation_subsumes_equivalence_relation<int (*)(int, double), int, double>());
+static_assert(check_relation_subsumes_equivalence_relation<R, S1, S1>());
+static_assert(check_relation_subsumes_equivalence_relation<R, S1, S2>());
+
+// clang-format off
+template<class F, class T, class U>
+requires std::equivalence_relation<F, T, T> && std::equivalence_relation<F, U, U>
+constexpr bool check_equivalence_relation_subsumes_itself() {
+  return false;
+}
+
+template<class F, class T, class U>
+requires std::equivalence_relation<F, T, U>
+constexpr bool check_equivalence_relation_subsumes_itself() {
+  return true;
+}
+// clang-format on
+
+static_assert(
+    check_equivalence_relation_subsumes_itself<int (*)(int, int), int, int>());
+static_assert(check_equivalence_relation_subsumes_itself<R, S1, S1>());
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.invocable/invocable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.invocable/invocable.compile.pass.cpp
new file mode 100644
index 0000000..9b9bac2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.invocable/invocable.compile.pass.cpp
@@ -0,0 +1,413 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class U>
+// concept invocable;
+
+#include <chrono>
+#include <concepts>
+#include <functional>
+#include <memory>
+#include <random>
+#include <type_traits>
+
+template <class R, class... Args>
+constexpr bool check_invocable() {
+  constexpr bool result = std::invocable<R(Args...), Args...>;
+  static_assert(std::invocable<R(Args...) noexcept, Args...> == result);
+  static_assert(std::invocable<R (*)(Args...), Args...> == result);
+  static_assert(std::invocable<R (*)(Args...) noexcept, Args...> == result);
+  static_assert(std::invocable<R (&)(Args...), Args...> == result);
+  static_assert(std::invocable<R (&)(Args...) noexcept, Args...> == result);
+
+  return result;
+}
+
+static_assert(check_invocable<void>());
+static_assert(check_invocable<void, int>());
+static_assert(check_invocable<void, int&>());
+static_assert(check_invocable<void, int*, double>());
+static_assert(check_invocable<int>());
+static_assert(check_invocable<int, int[]>());
+
+struct S;
+static_assert(check_invocable<int, int S::*, std::nullptr_t>());
+static_assert(check_invocable<int, int (S::*)(), int (S::*)(int), int>());
+static_assert(std::invocable<void (*)(int const&), int&>);
+static_assert(std::invocable<void (*)(int const&), int&&>);
+static_assert(std::invocable<void (*)(int volatile&), int&>);
+static_assert(std::invocable<void (*)(int const volatile&), int&>);
+
+static_assert(!std::invocable<void(), int>);
+static_assert(!std::invocable<void(int)>);
+static_assert(!std::invocable<void(int*), double*>);
+static_assert(!std::invocable<void (*)(int&), double*>);
+static_assert(std::invocable<int S::*, std::unique_ptr<S> >);
+static_assert(std::invocable<int S::*, std::shared_ptr<S> >);
+static_assert(!std::invocable<void (*)(int&&), int&>);
+static_assert(!std::invocable<void (*)(int&&), int const&>);
+
+static_assert(!std::invocable<void>);
+static_assert(!std::invocable<void*>);
+static_assert(!std::invocable<int>);
+static_assert(!std::invocable<int&>);
+static_assert(!std::invocable<int&&>);
+
+namespace function_objects {
+struct function_object {
+  void operator()();
+};
+static_assert(std::invocable<function_object>);
+static_assert(!std::invocable<function_object const>);
+static_assert(!std::invocable<function_object volatile>);
+static_assert(!std::invocable<function_object const volatile>);
+static_assert(std::invocable<function_object&>);
+static_assert(!std::invocable<function_object const&>);
+static_assert(!std::invocable<function_object volatile&>);
+static_assert(!std::invocable<function_object const volatile&>);
+
+struct const_function_object {
+  void operator()(int) const;
+};
+static_assert(std::invocable<const_function_object, int>);
+static_assert(std::invocable<const_function_object const, int>);
+static_assert(!std::invocable<const_function_object volatile, int>);
+static_assert(!std::invocable<const_function_object const volatile, int>);
+static_assert(std::invocable<const_function_object&, int>);
+static_assert(std::invocable<const_function_object const&, int>);
+static_assert(!std::invocable<const_function_object volatile&, int>);
+static_assert(!std::invocable<const_function_object const volatile&, int>);
+
+struct volatile_function_object {
+  void operator()(int, int) volatile;
+};
+static_assert(std::invocable<volatile_function_object, int, int>);
+static_assert(!std::invocable<volatile_function_object const, int, int>);
+static_assert(std::invocable<volatile_function_object volatile, int, int>);
+static_assert(
+    !std::invocable<volatile_function_object const volatile, int, int>);
+static_assert(std::invocable<volatile_function_object&, int, int>);
+static_assert(!std::invocable<volatile_function_object const&, int, int>);
+static_assert(std::invocable<volatile_function_object volatile&, int, int>);
+static_assert(
+    !std::invocable<volatile_function_object const volatile&, int, int>);
+
+struct cv_function_object {
+  void operator()(int[]) const volatile;
+};
+static_assert(std::invocable<cv_function_object, int*>);
+static_assert(std::invocable<cv_function_object const, int*>);
+static_assert(std::invocable<cv_function_object volatile, int*>);
+static_assert(std::invocable<cv_function_object const volatile, int*>);
+static_assert(std::invocable<cv_function_object&, int*>);
+static_assert(std::invocable<cv_function_object const&, int*>);
+static_assert(std::invocable<cv_function_object volatile&, int*>);
+static_assert(std::invocable<cv_function_object const volatile&, int*>);
+
+struct lvalue_function_object {
+  void operator()() &;
+};
+static_assert(!std::invocable<lvalue_function_object>);
+static_assert(!std::invocable<lvalue_function_object const>);
+static_assert(!std::invocable<lvalue_function_object volatile>);
+static_assert(!std::invocable<lvalue_function_object const volatile>);
+static_assert(std::invocable<lvalue_function_object&>);
+static_assert(!std::invocable<lvalue_function_object const&>);
+static_assert(!std::invocable<lvalue_function_object volatile&>);
+static_assert(!std::invocable<lvalue_function_object const volatile&>);
+
+struct lvalue_const_function_object {
+  void operator()(int) const&;
+};
+static_assert(std::invocable<lvalue_const_function_object, int>);
+static_assert(std::invocable<lvalue_const_function_object const, int>);
+static_assert(!std::invocable<lvalue_const_function_object volatile, int>);
+static_assert(
+    !std::invocable<lvalue_const_function_object const volatile, int>);
+static_assert(std::invocable<lvalue_const_function_object&, int>);
+static_assert(std::invocable<lvalue_const_function_object const&, int>);
+static_assert(!std::invocable<lvalue_const_function_object volatile&, int>);
+static_assert(
+    !std::invocable<lvalue_const_function_object const volatile&, int>);
+
+struct lvalue_volatile_function_object {
+  void operator()(int, int) volatile&;
+};
+static_assert(!std::invocable<lvalue_volatile_function_object, int, int>);
+static_assert(!std::invocable<lvalue_volatile_function_object const, int, int>);
+static_assert(
+    !std::invocable<lvalue_volatile_function_object volatile, int, int>);
+static_assert(
+    !std::invocable<lvalue_volatile_function_object const volatile, int, int>);
+static_assert(std::invocable<lvalue_volatile_function_object&, int, int>);
+static_assert(
+    !std::invocable<lvalue_volatile_function_object const&, int, int>);
+static_assert(
+    std::invocable<lvalue_volatile_function_object volatile&, int, int>);
+static_assert(
+    !std::invocable<lvalue_volatile_function_object const volatile&, int, int>);
+
+struct lvalue_cv_function_object {
+  void operator()(int[]) const volatile&;
+};
+static_assert(!std::invocable<lvalue_cv_function_object, int*>);
+static_assert(!std::invocable<lvalue_cv_function_object const, int*>);
+static_assert(!std::invocable<lvalue_cv_function_object volatile, int*>);
+static_assert(!std::invocable<lvalue_cv_function_object const volatile, int*>);
+static_assert(std::invocable<lvalue_cv_function_object&, int*>);
+static_assert(std::invocable<lvalue_cv_function_object const&, int*>);
+static_assert(std::invocable<lvalue_cv_function_object volatile&, int*>);
+static_assert(std::invocable<lvalue_cv_function_object const volatile&, int*>);
+//
+struct rvalue_function_object {
+  void operator()() &&;
+};
+static_assert(std::invocable<rvalue_function_object>);
+static_assert(!std::invocable<rvalue_function_object const>);
+static_assert(!std::invocable<rvalue_function_object volatile>);
+static_assert(!std::invocable<rvalue_function_object const volatile>);
+static_assert(!std::invocable<rvalue_function_object&>);
+static_assert(!std::invocable<rvalue_function_object const&>);
+static_assert(!std::invocable<rvalue_function_object volatile&>);
+static_assert(!std::invocable<rvalue_function_object const volatile&>);
+
+struct rvalue_const_function_object {
+  void operator()(int) const&&;
+};
+static_assert(std::invocable<rvalue_const_function_object, int>);
+static_assert(std::invocable<rvalue_const_function_object const, int>);
+static_assert(!std::invocable<rvalue_const_function_object volatile, int>);
+static_assert(
+    !std::invocable<rvalue_const_function_object const volatile, int>);
+static_assert(!std::invocable<rvalue_const_function_object&, int>);
+static_assert(!std::invocable<rvalue_const_function_object const&, int>);
+static_assert(!std::invocable<rvalue_const_function_object volatile&, int>);
+static_assert(
+    !std::invocable<rvalue_const_function_object const volatile&, int>);
+
+struct rvalue_volatile_function_object {
+  void operator()(int, int) volatile&&;
+};
+static_assert(std::invocable<rvalue_volatile_function_object, int, int>);
+static_assert(!std::invocable<rvalue_volatile_function_object const, int, int>);
+static_assert(
+    std::invocable<rvalue_volatile_function_object volatile, int, int>);
+static_assert(
+    !std::invocable<rvalue_volatile_function_object const volatile, int, int>);
+static_assert(!std::invocable<rvalue_volatile_function_object&, int, int>);
+static_assert(
+    !std::invocable<rvalue_volatile_function_object const&, int, int>);
+static_assert(
+    !std::invocable<rvalue_volatile_function_object volatile&, int, int>);
+static_assert(
+    !std::invocable<rvalue_volatile_function_object const volatile&, int, int>);
+
+struct rvalue_cv_function_object {
+  void operator()(int[]) const volatile&&;
+};
+static_assert(std::invocable<rvalue_cv_function_object, int*>);
+static_assert(std::invocable<rvalue_cv_function_object const, int*>);
+static_assert(std::invocable<rvalue_cv_function_object volatile, int*>);
+static_assert(std::invocable<rvalue_cv_function_object const volatile, int*>);
+static_assert(!std::invocable<rvalue_cv_function_object&, int*>);
+static_assert(!std::invocable<rvalue_cv_function_object const&, int*>);
+static_assert(!std::invocable<rvalue_cv_function_object volatile&, int*>);
+static_assert(!std::invocable<rvalue_cv_function_object const volatile&, int*>);
+
+struct multiple_overloads {
+  struct A {};
+  struct B { B(int); };
+  struct AB : A, B {};
+  struct O {};
+  void operator()(A) const;
+  void operator()(B) const;
+};
+static_assert(std::invocable<multiple_overloads, multiple_overloads::A>);
+static_assert(std::invocable<multiple_overloads, multiple_overloads::B>);
+static_assert(std::invocable<multiple_overloads, int>);
+static_assert(!std::invocable<multiple_overloads, multiple_overloads::AB>);
+static_assert(!std::invocable<multiple_overloads, multiple_overloads::O>);
+} // namespace function_objects
+
+namespace pointer_to_member_functions {
+  template<class Member, class T, class... Args>
+  constexpr bool check_member_is_invocable()
+  {
+    constexpr bool result = std::invocable<Member, T&&, Args...>;
+    using uncv_t = std::remove_cvref_t<T>;
+    static_assert(std::invocable<Member, uncv_t*, Args...> == result);
+    static_assert(std::invocable<Member, std::unique_ptr<uncv_t>, Args...> == result);
+    static_assert(std::invocable<Member, std::reference_wrapper<uncv_t>, Args...> == result);
+    static_assert(!std::invocable<Member, std::nullptr_t, Args...>);
+    static_assert(!std::invocable<Member, int, Args...>);
+    static_assert(!std::invocable<Member, int*, Args...>);
+    static_assert(!std::invocable<Member, double*, Args...>);
+    struct S2 {};
+    static_assert(!std::invocable<Member, S2*, Args...>);
+    return result;
+  }
+
+static_assert(check_member_is_invocable<int S::*, S>());
+static_assert(std::invocable<int S::*, S&>);
+static_assert(std::invocable<int S::*, S const&>);
+static_assert(std::invocable<int S::*, S volatile&>);
+static_assert(std::invocable<int S::*, S const volatile&>);
+static_assert(std::invocable<int S::*, S&&>);
+static_assert(std::invocable<int S::*, S const&&>);
+static_assert(std::invocable<int S::*, S volatile&&>);
+static_assert(std::invocable<int S::*, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)(int), S, int>());
+static_assert(!check_member_is_invocable<int (S::*)(int), S>());
+using unqualified = void (S::*)();
+static_assert(std::invocable<unqualified, S&>);
+static_assert(!std::invocable<unqualified, S const&>);
+static_assert(!std::invocable<unqualified, S volatile&>);
+static_assert(!std::invocable<unqualified, S const volatile&>);
+static_assert(std::invocable<unqualified, S&&>);
+static_assert(!std::invocable<unqualified, S const&&>);
+static_assert(!std::invocable<unqualified, S volatile&&>);
+static_assert(!std::invocable<unqualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)(double) const, S, double>());
+using const_qualified = void (S::*)() const;
+static_assert(std::invocable<const_qualified, S&>);
+static_assert(std::invocable<const_qualified, S const&>);
+static_assert(!std::invocable<const_qualified, S volatile&>);
+static_assert(!std::invocable<const_qualified, S const volatile&>);
+static_assert(std::invocable<const_qualified, S&&>);
+static_assert(std::invocable<const_qualified, S const&&>);
+static_assert(!std::invocable<const_qualified, S volatile&&>);
+static_assert(!std::invocable<const_qualified, S const volatile&&>);
+
+static_assert(
+    check_member_is_invocable<int (S::*)(double[]) volatile, S, double*>());
+using volatile_qualified = void (S::*)() volatile;
+static_assert(std::invocable<volatile_qualified, S&>);
+static_assert(!std::invocable<volatile_qualified, S const&>);
+static_assert(std::invocable<volatile_qualified, S volatile&>);
+static_assert(!std::invocable<volatile_qualified, S const volatile&>);
+static_assert(std::invocable<volatile_qualified, S&&>);
+static_assert(!std::invocable<volatile_qualified, S const&&>);
+static_assert(std::invocable<volatile_qualified, S volatile&&>);
+static_assert(!std::invocable<volatile_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)(int, S&) const volatile, S,
+                                        int, S&>());
+using cv_qualified = void (S::*)() const volatile;
+static_assert(std::invocable<cv_qualified, S&>);
+static_assert(std::invocable<cv_qualified, S const&>);
+static_assert(std::invocable<cv_qualified, S volatile&>);
+static_assert(std::invocable<cv_qualified, S const volatile&>);
+static_assert(std::invocable<cv_qualified, S&&>);
+static_assert(std::invocable<cv_qualified, S const&&>);
+static_assert(std::invocable<cv_qualified, S volatile&&>);
+static_assert(std::invocable<cv_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() &, S&>());
+using lvalue_qualified = void (S::*)() &;
+static_assert(std::invocable<lvalue_qualified, S&>);
+static_assert(!std::invocable<lvalue_qualified, S const&>);
+static_assert(!std::invocable<lvalue_qualified, S volatile&>);
+static_assert(!std::invocable<lvalue_qualified, S const volatile&>);
+static_assert(!std::invocable<lvalue_qualified, S&&>);
+static_assert(!std::invocable<lvalue_qualified, S const&&>);
+static_assert(!std::invocable<lvalue_qualified, S volatile&&>);
+static_assert(!std::invocable<lvalue_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() const&, S>());
+using lvalue_const_qualified = void (S::*)() const&;
+static_assert(std::invocable<lvalue_const_qualified, S&>);
+static_assert(std::invocable<lvalue_const_qualified, S const&>);
+static_assert(!std::invocable<lvalue_const_qualified, S volatile&>);
+static_assert(!std::invocable<lvalue_const_qualified, S const volatile&>);
+static_assert(std::invocable<lvalue_const_qualified, S&&>);
+static_assert(std::invocable<lvalue_const_qualified, S const&&>);
+static_assert(!std::invocable<lvalue_const_qualified, S volatile&&>);
+static_assert(!std::invocable<lvalue_const_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() volatile&, S&>());
+using lvalue_volatile_qualified = void (S::*)() volatile&;
+static_assert(std::invocable<lvalue_volatile_qualified, S&>);
+static_assert(!std::invocable<lvalue_volatile_qualified, S const&>);
+static_assert(std::invocable<lvalue_volatile_qualified, S volatile&>);
+static_assert(!std::invocable<lvalue_volatile_qualified, S const volatile&>);
+static_assert(!std::invocable<lvalue_volatile_qualified, S&&>);
+static_assert(!std::invocable<lvalue_volatile_qualified, S const&&>);
+static_assert(!std::invocable<lvalue_volatile_qualified, S volatile&&>);
+static_assert(!std::invocable<lvalue_volatile_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() const volatile&, S&>());
+using lvalue_cv_qualified = void (S::*)() const volatile&;
+static_assert(std::invocable<lvalue_cv_qualified, S&>);
+static_assert(std::invocable<lvalue_cv_qualified, S const&>);
+static_assert(std::invocable<lvalue_cv_qualified, S volatile&>);
+static_assert(std::invocable<lvalue_cv_qualified, S const volatile&>);
+static_assert(!std::invocable<lvalue_cv_qualified, S&&>);
+static_assert(!std::invocable<lvalue_cv_qualified, S const&&>);
+static_assert(!std::invocable<lvalue_cv_qualified, S volatile&&>);
+static_assert(!std::invocable<lvalue_cv_qualified, S const volatile&&>);
+
+using rvalue_unqualified = void (S::*)() &&;
+static_assert(!std::invocable<rvalue_unqualified, S&>);
+static_assert(!std::invocable<rvalue_unqualified, S const&>);
+static_assert(!std::invocable<rvalue_unqualified, S volatile&>);
+static_assert(!std::invocable<rvalue_unqualified, S const volatile&>);
+static_assert(std::invocable<rvalue_unqualified, S&&>);
+static_assert(!std::invocable<rvalue_unqualified, S const&&>);
+static_assert(!std::invocable<rvalue_unqualified, S volatile&&>);
+static_assert(!std::invocable<rvalue_unqualified, S const volatile&&>);
+
+using rvalue_const_unqualified = void (S::*)() const&&;
+static_assert(!std::invocable<rvalue_const_unqualified, S&>);
+static_assert(!std::invocable<rvalue_const_unqualified, S const&>);
+static_assert(!std::invocable<rvalue_const_unqualified, S volatile&>);
+static_assert(!std::invocable<rvalue_const_unqualified, S const volatile&>);
+static_assert(std::invocable<rvalue_const_unqualified, S&&>);
+static_assert(std::invocable<rvalue_const_unqualified, S const&&>);
+static_assert(!std::invocable<rvalue_const_unqualified, S volatile&&>);
+static_assert(!std::invocable<rvalue_const_unqualified, S const volatile&&>);
+
+using rvalue_volatile_unqualified = void (S::*)() volatile&&;
+static_assert(!std::invocable<rvalue_volatile_unqualified, S&>);
+static_assert(!std::invocable<rvalue_volatile_unqualified, S const&>);
+static_assert(!std::invocable<rvalue_volatile_unqualified, S volatile&>);
+static_assert(!std::invocable<rvalue_volatile_unqualified, S const volatile&>);
+static_assert(std::invocable<rvalue_volatile_unqualified, S&&>);
+static_assert(!std::invocable<rvalue_volatile_unqualified, S const&&>);
+static_assert(std::invocable<rvalue_volatile_unqualified, S volatile&&>);
+static_assert(!std::invocable<rvalue_volatile_unqualified, S const volatile&&>);
+
+using rvalue_cv_unqualified = void (S::*)() const volatile&&;
+static_assert(!std::invocable<rvalue_cv_unqualified, S&>);
+static_assert(!std::invocable<rvalue_cv_unqualified, S const&>);
+static_assert(!std::invocable<rvalue_cv_unqualified, S volatile&>);
+static_assert(!std::invocable<rvalue_cv_unqualified, S const volatile&>);
+static_assert(std::invocable<rvalue_cv_unqualified, S&&>);
+static_assert(std::invocable<rvalue_cv_unqualified, S const&&>);
+static_assert(std::invocable<rvalue_cv_unqualified, S volatile&&>);
+static_assert(std::invocable<rvalue_cv_unqualified, S const volatile&&>);
+} // namespace pointer_to_member_functions
+
+// std::invocable-specific
+static_assert(std::invocable<std::uniform_int_distribution<>, std::mt19937_64&>);
+
+// Check the concept with closure types
+template<class F, class... Args>
+constexpr bool is_invocable(F, Args&&...) {
+  return std::invocable<F, Args...>;
+}
+
+static_assert(is_invocable([] {}));
+static_assert(is_invocable([](int) {}, 0));
+static_assert(is_invocable([](int) {}, 0L));
+static_assert(!is_invocable([](int) {}, nullptr));
+int i = 0;
+static_assert(is_invocable([](int&) {}, i));
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.predicate/predicate.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.predicate/predicate.compile.pass.cpp
new file mode 100644
index 0000000..fc512af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.predicate/predicate.compile.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept predicate;
+
+#include <concepts>
+#include <type_traits>
+
+static_assert(std::predicate<bool()>);
+static_assert(std::predicate<bool (*)()>);
+static_assert(std::predicate<bool (&)()>);
+
+static_assert(!std::predicate<void()>);
+static_assert(!std::predicate<void (*)()>);
+static_assert(!std::predicate<void (&)()>);
+
+struct S {};
+
+static_assert(!std::predicate<S(int), int>);
+static_assert(!std::predicate<S(double), double>);
+static_assert(std::predicate<int S::*, S*>);
+static_assert(std::predicate<int (S::*)(), S*>);
+static_assert(std::predicate<int (S::*)(), S&>);
+static_assert(!std::predicate<void (S::*)(), S*>);
+static_assert(!std::predicate<void (S::*)(), S&>);
+
+static_assert(!std::predicate<bool(S)>);
+static_assert(!std::predicate<bool(S&), S>);
+static_assert(!std::predicate<bool(S&), S const&>);
+static_assert(std::predicate<bool(S&), S&>);
+
+struct Predicate {
+  bool operator()(int, double, char);
+};
+static_assert(std::predicate<Predicate, int, double, char>);
+static_assert(std::predicate<Predicate&, int, double, char>);
+static_assert(!std::predicate<const Predicate, int, double, char>);
+static_assert(!std::predicate<const Predicate&, int, double, char>);
+
+constexpr bool check_lambda(auto) { return false; }
+
+constexpr bool check_lambda(std::predicate auto) { return true; }
+
+static_assert(check_lambda([] { return std::true_type(); }));
+static_assert(check_lambda([]() -> int* { return nullptr; }));
+
+struct boolean {
+  operator bool() const noexcept;
+};
+static_assert(check_lambda([] { return boolean(); }));
+
+struct explicit_bool {
+  explicit operator bool() const noexcept;
+};
+static_assert(!check_lambda([] { return explicit_bool(); }));
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.predicate/predicate.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.predicate/predicate.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..3d82c73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.predicate/predicate.subsumption.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept predicate;
+
+#include <concepts>
+
+constexpr bool check_subsumption(std::regular_invocable auto) {
+  return false;
+}
+
+// clang-format off
+template<class F>
+requires std::predicate<F> && true
+constexpr bool check_subsumption(F)
+{
+  return true;
+}
+// clang-format on
+
+static_assert(!check_subsumption([] {}));
+static_assert(check_subsumption([] { return true; }));
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.regularinvocable/regular_invocable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.regularinvocable/regular_invocable.compile.pass.cpp
new file mode 100644
index 0000000..bfd2075
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.regularinvocable/regular_invocable.compile.pass.cpp
@@ -0,0 +1,461 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class U>
+// concept regular_invocable;
+
+#include <chrono>
+#include <concepts>
+#include <functional>
+#include <memory>
+#include <random>
+#include <type_traits>
+
+template <class R, class... Args>
+constexpr bool check_invocable() {
+  constexpr bool result = std::regular_invocable<R(Args...), Args...>;
+  static_assert(std::regular_invocable<R(Args...) noexcept, Args...> == result);
+  static_assert(std::regular_invocable<R (*)(Args...), Args...> == result);
+  static_assert(std::regular_invocable<R (*)(Args...) noexcept, Args...> ==
+                result);
+  static_assert(std::regular_invocable<R (&)(Args...), Args...> == result);
+  static_assert(std::regular_invocable<R (&)(Args...) noexcept, Args...> ==
+                result);
+
+  return result;
+}
+
+static_assert(check_invocable<void>());
+static_assert(check_invocable<void, int>());
+static_assert(check_invocable<void, int&>());
+static_assert(check_invocable<void, int*, double>());
+static_assert(check_invocable<int>());
+static_assert(check_invocable<int, int[]>());
+
+struct S;
+static_assert(check_invocable<int, int S::*, std::nullptr_t>());
+static_assert(check_invocable<int, int (S::*)(), int (S::*)(int), int>());
+static_assert(std::regular_invocable<void (*)(int const&), int&>);
+static_assert(std::regular_invocable<void (*)(int const&), int&&>);
+static_assert(std::regular_invocable<void (*)(int volatile&), int&>);
+static_assert(std::regular_invocable<void (*)(int const volatile&), int&>);
+
+static_assert(!std::regular_invocable<void(), int>);
+static_assert(!std::regular_invocable<void(int)>);
+static_assert(!std::regular_invocable<void(int*), double*>);
+static_assert(!std::regular_invocable<void (*)(int&), double*>);
+static_assert(std::regular_invocable<int S::*, std::unique_ptr<S> >);
+static_assert(std::regular_invocable<int S::*, std::shared_ptr<S> >);
+static_assert(!std::regular_invocable<void (*)(int&&), int&>);
+static_assert(!std::regular_invocable<void (*)(int&&), int const&>);
+
+static_assert(!std::regular_invocable<void>);
+static_assert(!std::regular_invocable<void*>);
+static_assert(!std::regular_invocable<int>);
+static_assert(!std::regular_invocable<int&>);
+static_assert(!std::regular_invocable<int&&>);
+
+namespace function_objects {
+struct function_object {
+  void operator()();
+};
+static_assert(std::regular_invocable<function_object>);
+static_assert(!std::regular_invocable<function_object const>);
+static_assert(!std::regular_invocable<function_object volatile>);
+static_assert(!std::regular_invocable<function_object const volatile>);
+static_assert(std::regular_invocable<function_object&>);
+static_assert(!std::regular_invocable<function_object const&>);
+static_assert(!std::regular_invocable<function_object volatile&>);
+static_assert(!std::regular_invocable<function_object const volatile&>);
+
+struct const_function_object {
+  void operator()(int) const;
+};
+static_assert(std::regular_invocable<const_function_object, int>);
+static_assert(std::regular_invocable<const_function_object const, int>);
+static_assert(!std::regular_invocable<const_function_object volatile, int>);
+static_assert(
+    !std::regular_invocable<const_function_object const volatile, int>);
+static_assert(std::regular_invocable<const_function_object&, int>);
+static_assert(std::regular_invocable<const_function_object const&, int>);
+static_assert(!std::regular_invocable<const_function_object volatile&, int>);
+static_assert(
+    !std::regular_invocable<const_function_object const volatile&, int>);
+
+struct volatile_function_object {
+  void operator()(int, int) volatile;
+};
+static_assert(std::regular_invocable<volatile_function_object, int, int>);
+static_assert(
+    !std::regular_invocable<volatile_function_object const, int, int>);
+static_assert(
+    std::regular_invocable<volatile_function_object volatile, int, int>);
+static_assert(
+    !std::regular_invocable<volatile_function_object const volatile, int, int>);
+static_assert(std::regular_invocable<volatile_function_object&, int, int>);
+static_assert(
+    !std::regular_invocable<volatile_function_object const&, int, int>);
+static_assert(
+    std::regular_invocable<volatile_function_object volatile&, int, int>);
+static_assert(!std::regular_invocable<volatile_function_object const volatile&,
+                                      int, int>);
+
+struct cv_function_object {
+  void operator()(int[]) const volatile;
+};
+static_assert(std::regular_invocable<cv_function_object, int*>);
+static_assert(std::regular_invocable<cv_function_object const, int*>);
+static_assert(std::regular_invocable<cv_function_object volatile, int*>);
+static_assert(std::regular_invocable<cv_function_object const volatile, int*>);
+static_assert(std::regular_invocable<cv_function_object&, int*>);
+static_assert(std::regular_invocable<cv_function_object const&, int*>);
+static_assert(std::regular_invocable<cv_function_object volatile&, int*>);
+static_assert(std::regular_invocable<cv_function_object const volatile&, int*>);
+
+struct lvalue_function_object {
+  void operator()() &;
+};
+static_assert(!std::regular_invocable<lvalue_function_object>);
+static_assert(!std::regular_invocable<lvalue_function_object const>);
+static_assert(!std::regular_invocable<lvalue_function_object volatile>);
+static_assert(!std::regular_invocable<lvalue_function_object const volatile>);
+static_assert(std::regular_invocable<lvalue_function_object&>);
+static_assert(!std::regular_invocable<lvalue_function_object const&>);
+static_assert(!std::regular_invocable<lvalue_function_object volatile&>);
+static_assert(!std::regular_invocable<lvalue_function_object const volatile&>);
+
+struct lvalue_const_function_object {
+  void operator()(int) const&;
+};
+static_assert(std::regular_invocable<lvalue_const_function_object, int>);
+static_assert(std::regular_invocable<lvalue_const_function_object const, int>);
+static_assert(
+    !std::regular_invocable<lvalue_const_function_object volatile, int>);
+static_assert(
+    !std::regular_invocable<lvalue_const_function_object const volatile, int>);
+static_assert(std::regular_invocable<lvalue_const_function_object&, int>);
+static_assert(std::regular_invocable<lvalue_const_function_object const&, int>);
+static_assert(
+    !std::regular_invocable<lvalue_const_function_object volatile&, int>);
+static_assert(
+    !std::regular_invocable<lvalue_const_function_object const volatile&, int>);
+
+struct lvalue_volatile_function_object {
+  void operator()(int, int) volatile&;
+};
+static_assert(
+    !std::regular_invocable<lvalue_volatile_function_object, int, int>);
+static_assert(
+    !std::regular_invocable<lvalue_volatile_function_object const, int, int>);
+static_assert(!std::regular_invocable<lvalue_volatile_function_object volatile,
+                                      int, int>);
+static_assert(!std::regular_invocable<
+              lvalue_volatile_function_object const volatile, int, int>);
+static_assert(
+    std::regular_invocable<lvalue_volatile_function_object&, int, int>);
+static_assert(
+    !std::regular_invocable<lvalue_volatile_function_object const&, int, int>);
+static_assert(std::regular_invocable<lvalue_volatile_function_object volatile&,
+                                     int, int>);
+static_assert(!std::regular_invocable<
+              lvalue_volatile_function_object const volatile&, int, int>);
+
+struct lvalue_cv_function_object {
+  void operator()(int[]) const volatile&;
+};
+static_assert(!std::regular_invocable<lvalue_cv_function_object, int*>);
+static_assert(!std::regular_invocable<lvalue_cv_function_object const, int*>);
+static_assert(
+    !std::regular_invocable<lvalue_cv_function_object volatile, int*>);
+static_assert(
+    !std::regular_invocable<lvalue_cv_function_object const volatile, int*>);
+static_assert(std::regular_invocable<lvalue_cv_function_object&, int*>);
+static_assert(std::regular_invocable<lvalue_cv_function_object const&, int*>);
+static_assert(
+    std::regular_invocable<lvalue_cv_function_object volatile&, int*>);
+static_assert(
+    std::regular_invocable<lvalue_cv_function_object const volatile&, int*>);
+//
+struct rvalue_function_object {
+  void operator()() &&;
+};
+static_assert(std::regular_invocable<rvalue_function_object>);
+static_assert(!std::regular_invocable<rvalue_function_object const>);
+static_assert(!std::regular_invocable<rvalue_function_object volatile>);
+static_assert(!std::regular_invocable<rvalue_function_object const volatile>);
+static_assert(!std::regular_invocable<rvalue_function_object&>);
+static_assert(!std::regular_invocable<rvalue_function_object const&>);
+static_assert(!std::regular_invocable<rvalue_function_object volatile&>);
+static_assert(!std::regular_invocable<rvalue_function_object const volatile&>);
+
+struct rvalue_const_function_object {
+  void operator()(int) const&&;
+};
+static_assert(std::regular_invocable<rvalue_const_function_object, int>);
+static_assert(std::regular_invocable<rvalue_const_function_object const, int>);
+static_assert(
+    !std::regular_invocable<rvalue_const_function_object volatile, int>);
+static_assert(
+    !std::regular_invocable<rvalue_const_function_object const volatile, int>);
+static_assert(!std::regular_invocable<rvalue_const_function_object&, int>);
+static_assert(
+    !std::regular_invocable<rvalue_const_function_object const&, int>);
+static_assert(
+    !std::regular_invocable<rvalue_const_function_object volatile&, int>);
+static_assert(
+    !std::regular_invocable<rvalue_const_function_object const volatile&, int>);
+
+struct rvalue_volatile_function_object {
+  void operator()(int, int) volatile&&;
+};
+static_assert(
+    std::regular_invocable<rvalue_volatile_function_object, int, int>);
+static_assert(
+    !std::regular_invocable<rvalue_volatile_function_object const, int, int>);
+static_assert(
+    std::regular_invocable<rvalue_volatile_function_object volatile, int, int>);
+static_assert(!std::regular_invocable<
+              rvalue_volatile_function_object const volatile, int, int>);
+static_assert(
+    !std::regular_invocable<rvalue_volatile_function_object&, int, int>);
+static_assert(
+    !std::regular_invocable<rvalue_volatile_function_object const&, int, int>);
+static_assert(!std::regular_invocable<rvalue_volatile_function_object volatile&,
+                                      int, int>);
+static_assert(!std::regular_invocable<
+              rvalue_volatile_function_object const volatile&, int, int>);
+
+struct rvalue_cv_function_object {
+  void operator()(int[]) const volatile&&;
+};
+static_assert(std::regular_invocable<rvalue_cv_function_object, int*>);
+static_assert(std::regular_invocable<rvalue_cv_function_object const, int*>);
+static_assert(std::regular_invocable<rvalue_cv_function_object volatile, int*>);
+static_assert(
+    std::regular_invocable<rvalue_cv_function_object const volatile, int*>);
+static_assert(!std::regular_invocable<rvalue_cv_function_object&, int*>);
+static_assert(!std::regular_invocable<rvalue_cv_function_object const&, int*>);
+static_assert(
+    !std::regular_invocable<rvalue_cv_function_object volatile&, int*>);
+static_assert(
+    !std::regular_invocable<rvalue_cv_function_object const volatile&, int*>);
+
+struct multiple_overloads {
+  struct A {};
+  struct B { B(int); };
+  struct AB : A, B {};
+  struct O {};
+  void operator()(A) const;
+  void operator()(B) const;
+};
+static_assert(std::regular_invocable<multiple_overloads, multiple_overloads::A>);
+static_assert(std::regular_invocable<multiple_overloads, multiple_overloads::B>);
+static_assert(std::regular_invocable<multiple_overloads, int>);
+static_assert(!std::regular_invocable<multiple_overloads, multiple_overloads::AB>);
+static_assert(!std::regular_invocable<multiple_overloads, multiple_overloads::O>);
+} // namespace function_objects
+
+namespace pointer_to_member_functions {
+  template<class Member, class T, class... Args>
+  constexpr bool check_member_is_invocable()
+  {
+    constexpr bool result = std::regular_invocable<Member, T&&, Args...>;
+    using uncv_t = std::remove_cvref_t<T>;
+    static_assert(std::regular_invocable<Member, uncv_t*, Args...> == result);
+    static_assert(std::regular_invocable<Member, std::unique_ptr<uncv_t>, Args...> == result);
+    static_assert(std::regular_invocable<Member, std::reference_wrapper<uncv_t>, Args...> == result);
+    static_assert(!std::regular_invocable<Member, std::nullptr_t, Args...>);
+    static_assert(!std::regular_invocable<Member, int, Args...>);
+    static_assert(!std::regular_invocable<Member, int*, Args...>);
+    static_assert(!std::regular_invocable<Member, double*, Args...>);
+    struct S2 {};
+    static_assert(!std::regular_invocable<Member, S2*, Args...>);
+    return result;
+  }
+
+static_assert(check_member_is_invocable<int S::*, S>());
+static_assert(std::regular_invocable<int S::*, S&>);
+static_assert(std::regular_invocable<int S::*, S const&>);
+static_assert(std::regular_invocable<int S::*, S volatile&>);
+static_assert(std::regular_invocable<int S::*, S const volatile&>);
+static_assert(std::regular_invocable<int S::*, S&&>);
+static_assert(std::regular_invocable<int S::*, S const&&>);
+static_assert(std::regular_invocable<int S::*, S volatile&&>);
+static_assert(std::regular_invocable<int S::*, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)(int), S, int>());
+static_assert(!check_member_is_invocable<int (S::*)(int), S>());
+using unqualified = void (S::*)();
+static_assert(std::regular_invocable<unqualified, S&>);
+static_assert(!std::regular_invocable<unqualified, S const&>);
+static_assert(!std::regular_invocable<unqualified, S volatile&>);
+static_assert(!std::regular_invocable<unqualified, S const volatile&>);
+static_assert(std::regular_invocable<unqualified, S&&>);
+static_assert(!std::regular_invocable<unqualified, S const&&>);
+static_assert(!std::regular_invocable<unqualified, S volatile&&>);
+static_assert(!std::regular_invocable<unqualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)(double) const, S, double>());
+using const_qualified = void (S::*)() const;
+static_assert(std::regular_invocable<const_qualified, S&>);
+static_assert(std::regular_invocable<const_qualified, S const&>);
+static_assert(!std::regular_invocable<const_qualified, S volatile&>);
+static_assert(!std::regular_invocable<const_qualified, S const volatile&>);
+static_assert(std::regular_invocable<const_qualified, S&&>);
+static_assert(std::regular_invocable<const_qualified, S const&&>);
+static_assert(!std::regular_invocable<const_qualified, S volatile&&>);
+static_assert(!std::regular_invocable<const_qualified, S const volatile&&>);
+
+static_assert(
+    check_member_is_invocable<int (S::*)(double[]) volatile, S, double*>());
+using volatile_qualified = void (S::*)() volatile;
+static_assert(std::regular_invocable<volatile_qualified, S&>);
+static_assert(!std::regular_invocable<volatile_qualified, S const&>);
+static_assert(std::regular_invocable<volatile_qualified, S volatile&>);
+static_assert(!std::regular_invocable<volatile_qualified, S const volatile&>);
+static_assert(std::regular_invocable<volatile_qualified, S&&>);
+static_assert(!std::regular_invocable<volatile_qualified, S const&&>);
+static_assert(std::regular_invocable<volatile_qualified, S volatile&&>);
+static_assert(!std::regular_invocable<volatile_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)(int, S&) const volatile, S,
+                                        int, S&>());
+using cv_qualified = void (S::*)() const volatile;
+static_assert(std::regular_invocable<cv_qualified, S&>);
+static_assert(std::regular_invocable<cv_qualified, S const&>);
+static_assert(std::regular_invocable<cv_qualified, S volatile&>);
+static_assert(std::regular_invocable<cv_qualified, S const volatile&>);
+static_assert(std::regular_invocable<cv_qualified, S&&>);
+static_assert(std::regular_invocable<cv_qualified, S const&&>);
+static_assert(std::regular_invocable<cv_qualified, S volatile&&>);
+static_assert(std::regular_invocable<cv_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() &, S&>());
+using lvalue_qualified = void (S::*)() &;
+static_assert(std::regular_invocable<lvalue_qualified, S&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S const&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S volatile&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S const volatile&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S&&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S const&&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S volatile&&>);
+static_assert(!std::regular_invocable<lvalue_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() const&, S>());
+using lvalue_const_qualified = void (S::*)() const&;
+static_assert(std::regular_invocable<lvalue_const_qualified, S&>);
+static_assert(std::regular_invocable<lvalue_const_qualified, S const&>);
+static_assert(!std::regular_invocable<lvalue_const_qualified, S volatile&>);
+static_assert(
+    !std::regular_invocable<lvalue_const_qualified, S const volatile&>);
+static_assert(std::regular_invocable<lvalue_const_qualified, S&&>);
+static_assert(std::regular_invocable<lvalue_const_qualified, S const&&>);
+static_assert(!std::regular_invocable<lvalue_const_qualified, S volatile&&>);
+static_assert(
+    !std::regular_invocable<lvalue_const_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() volatile&, S&>());
+using lvalue_volatile_qualified = void (S::*)() volatile&;
+static_assert(std::regular_invocable<lvalue_volatile_qualified, S&>);
+static_assert(!std::regular_invocable<lvalue_volatile_qualified, S const&>);
+static_assert(std::regular_invocable<lvalue_volatile_qualified, S volatile&>);
+static_assert(
+    !std::regular_invocable<lvalue_volatile_qualified, S const volatile&>);
+static_assert(!std::regular_invocable<lvalue_volatile_qualified, S&&>);
+static_assert(!std::regular_invocable<lvalue_volatile_qualified, S const&&>);
+static_assert(!std::regular_invocable<lvalue_volatile_qualified, S volatile&&>);
+static_assert(
+    !std::regular_invocable<lvalue_volatile_qualified, S const volatile&&>);
+
+static_assert(check_member_is_invocable<int (S::*)() const volatile&, S&>());
+using lvalue_cv_qualified = void (S::*)() const volatile&;
+static_assert(std::regular_invocable<lvalue_cv_qualified, S&>);
+static_assert(std::regular_invocable<lvalue_cv_qualified, S const&>);
+static_assert(std::regular_invocable<lvalue_cv_qualified, S volatile&>);
+static_assert(std::regular_invocable<lvalue_cv_qualified, S const volatile&>);
+static_assert(!std::regular_invocable<lvalue_cv_qualified, S&&>);
+static_assert(!std::regular_invocable<lvalue_cv_qualified, S const&&>);
+static_assert(!std::regular_invocable<lvalue_cv_qualified, S volatile&&>);
+static_assert(!std::regular_invocable<lvalue_cv_qualified, S const volatile&&>);
+
+using rvalue_unqualified = void (S::*)() &&;
+static_assert(!std::regular_invocable<rvalue_unqualified, S&>);
+static_assert(!std::regular_invocable<rvalue_unqualified, S const&>);
+static_assert(!std::regular_invocable<rvalue_unqualified, S volatile&>);
+static_assert(!std::regular_invocable<rvalue_unqualified, S const volatile&>);
+static_assert(std::regular_invocable<rvalue_unqualified, S&&>);
+static_assert(!std::regular_invocable<rvalue_unqualified, S const&&>);
+static_assert(!std::regular_invocable<rvalue_unqualified, S volatile&&>);
+static_assert(!std::regular_invocable<rvalue_unqualified, S const volatile&&>);
+
+using rvalue_const_unqualified = void (S::*)() const&&;
+static_assert(!std::regular_invocable<rvalue_const_unqualified, S&>);
+static_assert(!std::regular_invocable<rvalue_const_unqualified, S const&>);
+static_assert(!std::regular_invocable<rvalue_const_unqualified, S volatile&>);
+static_assert(
+    !std::regular_invocable<rvalue_const_unqualified, S const volatile&>);
+static_assert(std::regular_invocable<rvalue_const_unqualified, S&&>);
+static_assert(std::regular_invocable<rvalue_const_unqualified, S const&&>);
+static_assert(!std::regular_invocable<rvalue_const_unqualified, S volatile&&>);
+static_assert(
+    !std::regular_invocable<rvalue_const_unqualified, S const volatile&&>);
+
+using rvalue_volatile_unqualified = void (S::*)() volatile&&;
+static_assert(!std::regular_invocable<rvalue_volatile_unqualified, S&>);
+static_assert(!std::regular_invocable<rvalue_volatile_unqualified, S const&>);
+static_assert(
+    !std::regular_invocable<rvalue_volatile_unqualified, S volatile&>);
+static_assert(
+    !std::regular_invocable<rvalue_volatile_unqualified, S const volatile&>);
+static_assert(std::regular_invocable<rvalue_volatile_unqualified, S&&>);
+static_assert(!std::regular_invocable<rvalue_volatile_unqualified, S const&&>);
+static_assert(
+    std::regular_invocable<rvalue_volatile_unqualified, S volatile&&>);
+static_assert(
+    !std::regular_invocable<rvalue_volatile_unqualified, S const volatile&&>);
+
+using rvalue_cv_unqualified = void (S::*)() const volatile&&;
+static_assert(!std::regular_invocable<rvalue_cv_unqualified, S&>);
+static_assert(!std::regular_invocable<rvalue_cv_unqualified, S const&>);
+static_assert(!std::regular_invocable<rvalue_cv_unqualified, S volatile&>);
+static_assert(
+    !std::regular_invocable<rvalue_cv_unqualified, S const volatile&>);
+static_assert(std::regular_invocable<rvalue_cv_unqualified, S&&>);
+static_assert(std::regular_invocable<rvalue_cv_unqualified, S const&&>);
+static_assert(std::regular_invocable<rvalue_cv_unqualified, S volatile&&>);
+static_assert(
+    std::regular_invocable<rvalue_cv_unqualified, S const volatile&&>);
+} // namespace pointer_to_member_functions
+
+// Check the concept with closure types (and also check for subsumption)
+template<class F, class... Args>
+constexpr bool is_regular_invocable(F, Args&&...) {
+  return false;
+}
+
+template<class F, class... Args>
+requires std::invocable<F, Args...>
+constexpr bool is_regular_invocable(F, Args&&...) {
+  return false;
+}
+
+template<class F, class... Args>
+requires std::regular_invocable<F, Args...> && true
+constexpr bool is_regular_invocable(F, Args&&...) {
+  return true;
+}
+
+static_assert(is_regular_invocable([] {}));
+static_assert(is_regular_invocable([](int) {}, 0));
+static_assert(is_regular_invocable([](int) {}, 0L));
+static_assert(!is_regular_invocable([](int) {}, nullptr));
+
+int i = 0;
+static_assert(is_regular_invocable([](int&) {}, i));
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.relation/relation.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.relation/relation.compile.pass.cpp
new file mode 100644
index 0000000..98d73fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.relation/relation.compile.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept relation;
+
+#include <concepts>
+
+static_assert(std::relation<bool(int, int), int, int>);
+static_assert(std::relation<bool(int, int), double, double>);
+static_assert(std::relation<bool(int, double), double, double>);
+
+static_assert(!std::relation<bool(), int, double>);
+static_assert(!std::relation<bool(int), int, double>);
+static_assert(!std::relation<bool(double), int, double>);
+static_assert(!std::relation<bool(double, double*), double, double*>);
+static_assert(!std::relation<bool(int&, int&), double&, double&>);
+
+struct S1 {};
+static_assert(std::relation<bool (S1::*)(S1*), S1*, S1*>);
+static_assert(std::relation<bool (S1::*)(S1&), S1&, S1&>);
+
+struct S2 {};
+
+struct P1 {
+  bool operator()(S1, S1) const;
+};
+static_assert(std::relation<P1, S1, S1>);
+
+struct P2 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+};
+static_assert(!std::relation<P2, S1, S2>);
+
+struct P3 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+};
+static_assert(!std::relation<P3, S1, S2>);
+
+struct P4 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+  bool operator()(S2, S2) const;
+};
+static_assert(std::relation<P4, S1, S2>);
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.relation/relation.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.relation/relation.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..ed4197f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.relation/relation.subsumption.compile.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept relation;
+
+#include <concepts>
+
+struct S1 {};
+struct S2 {};
+
+struct R {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+  bool operator()(S2, S2) const;
+};
+
+// clang-format off
+template<class F, class T, class U>
+requires std::predicate<F, T, T> && std::predicate<F, T, U> &&
+         std::predicate<F, U, T> && std::predicate<F, U, U>
+constexpr bool check_relation_subsumes_predicate() {
+  return false;
+}
+
+template<class F, class T, class U>
+requires std::relation<F, T, U> && true
+constexpr bool check_relation_subsumes_predicate() {
+  return true;
+}
+// clang-format on
+
+static_assert(
+    check_relation_subsumes_predicate<int (*)(int, double), int, int>());
+static_assert(
+    check_relation_subsumes_predicate<int (*)(int, double), int, double>());
+static_assert(check_relation_subsumes_predicate<R, S1, S1>());
+static_assert(check_relation_subsumes_predicate<R, S1, S2>());
+
+// clang-format off
+template<class F, class T, class U>
+requires std::relation<F, T, T> && std::relation<F, U, U>
+constexpr bool check_relation_subsumes_itself() {
+  return false;
+}
+
+template<class F, class T, class U>
+requires std::relation<F, T, U>
+constexpr bool check_relation_subsumes_itself() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_relation_subsumes_itself<int (*)(int, double), int, int>());
+static_assert(check_relation_subsumes_itself<R, S1, S1>());
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.strictweakorder/strict_weak_order.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.strictweakorder/strict_weak_order.compile.pass.cpp
new file mode 100644
index 0000000..8aedf97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.strictweakorder/strict_weak_order.compile.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept strict_weak_order;
+
+#include <concepts>
+
+static_assert(std::strict_weak_order<bool(int, int), int, int>);
+static_assert(std::strict_weak_order<bool(int, int), double, double>);
+static_assert(std::strict_weak_order<bool(int, double), double, double>);
+
+static_assert(!std::strict_weak_order<bool (*)(), int, double>);
+static_assert(!std::strict_weak_order<bool (*)(int), int, double>);
+static_assert(!std::strict_weak_order<bool (*)(double), int, double>);
+
+static_assert(!std::strict_weak_order<bool(double, double*), double, double*>);
+static_assert(!std::strict_weak_order<bool(int&, int&), double&, double&>);
+
+struct S1 {};
+static_assert(std::strict_weak_order<bool (S1::*)(S1*), S1*, S1*>);
+static_assert(std::strict_weak_order<bool (S1::*)(S1&), S1&, S1&>);
+
+struct S2 {};
+
+struct P1 {
+  bool operator()(S1, S1) const;
+};
+static_assert(std::strict_weak_order<P1, S1, S1>);
+
+struct P2 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+};
+static_assert(!std::strict_weak_order<P2, S1, S2>);
+
+struct P3 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+};
+static_assert(!std::strict_weak_order<P3, S1, S2>);
+
+struct P4 {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+  bool operator()(S2, S2) const;
+};
+static_assert(std::strict_weak_order<P4, S1, S2>);
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.strictweakorder/strict_weak_order.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.strictweakorder/strict_weak_order.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..c03f314
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.callable/concept.strictweakorder/strict_weak_order.subsumption.compile.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class... Args>
+// concept strict_weak_order;
+
+#include <concepts>
+
+struct S1 {};
+struct S2 {};
+
+struct R {
+  bool operator()(S1, S1) const;
+  bool operator()(S1, S2) const;
+  bool operator()(S2, S1) const;
+  bool operator()(S2, S2) const;
+};
+
+// clang-format off
+template<class F, class T, class U>
+requires std::relation<F, T, U>
+constexpr bool check_strict_weak_order_subsumes_relation() {
+  return false;
+}
+
+template<class F, class T, class U>
+requires std::strict_weak_order<F, T, U> && true
+constexpr bool check_strict_weak_order_subsumes_relation() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_strict_weak_order_subsumes_relation<int (*)(int, int), int, int>());
+static_assert(check_strict_weak_order_subsumes_relation<int (*)(int, double), int, double>());
+static_assert(check_strict_weak_order_subsumes_relation<R, S1, S1>());
+static_assert(check_strict_weak_order_subsumes_relation<R, S1, S2>());
+
+// clang-format off
+template<class F, class T, class U>
+requires std::relation<F, T, U> && true
+constexpr bool check_relation_subsumes_strict_weak_order() {
+  return true;
+}
+
+template<class F, class T, class U>
+requires std::strict_weak_order<F, T, U>
+constexpr bool check_relation_subsumes_strict_weak_order() {
+  return false;
+}
+// clang-format on
+
+static_assert(check_relation_subsumes_strict_weak_order<int (*)(int, int), int, int>());
+static_assert(check_relation_subsumes_strict_weak_order<int (*)(int, double), int, double>());
+static_assert(check_relation_subsumes_strict_weak_order<R, S1, S1>());
+static_assert(check_relation_subsumes_strict_weak_order<R, S1, S2>());
+
+// clang-format off
+template<class F, class T, class U>
+requires std::strict_weak_order<F, T, T> && std::strict_weak_order<F, U, U>
+constexpr bool check_strict_weak_order_subsumes_itself() {
+  return false;
+}
+
+template<class F, class T, class U>
+requires std::strict_weak_order<F, T, U>
+constexpr bool check_strict_weak_order_subsumes_itself() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_strict_weak_order_subsumes_itself<int (*)(int, int), int, int>());
+static_assert(check_strict_weak_order_subsumes_itself<R, S1, S1>());
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concept.equalitycomparable/equality_comparable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concept.equalitycomparable/equality_comparable.compile.pass.cpp
new file mode 100644
index 0000000..b58dae3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concept.equalitycomparable/equality_comparable.compile.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept equality_comparable = // see below
+
+#include <concepts>
+
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "compare_types.h"
+
+namespace fundamentals {
+static_assert(std::equality_comparable<int>);
+static_assert(std::equality_comparable<double>);
+static_assert(std::equality_comparable<void*>);
+static_assert(std::equality_comparable<char*>);
+static_assert(std::equality_comparable<char const*>);
+static_assert(std::equality_comparable<char volatile*>);
+static_assert(std::equality_comparable<char const volatile*>);
+static_assert(std::equality_comparable<wchar_t&>);
+static_assert(std::equality_comparable<char8_t const&>);
+static_assert(std::equality_comparable<char16_t volatile&>);
+static_assert(std::equality_comparable<char32_t const volatile&>);
+static_assert(std::equality_comparable<unsigned char&&>);
+static_assert(std::equality_comparable<unsigned short const&&>);
+static_assert(std::equality_comparable<unsigned int volatile&&>);
+static_assert(std::equality_comparable<unsigned long const volatile&&>);
+static_assert(std::equality_comparable<int[5]>);
+static_assert(std::equality_comparable<int (*)(int)>);
+static_assert(std::equality_comparable<int (&)(int)>);
+static_assert(std::equality_comparable<int (*)(int) noexcept>);
+static_assert(std::equality_comparable<int (&)(int) noexcept>);
+static_assert(std::equality_comparable<std::nullptr_t>);
+
+struct S {};
+static_assert(std::equality_comparable<int S::*>);
+static_assert(std::equality_comparable<int (S::*)()>);
+static_assert(std::equality_comparable<int (S::*)() noexcept>);
+static_assert(std::equality_comparable<int (S::*)() &>);
+static_assert(std::equality_comparable<int (S::*)() & noexcept>);
+static_assert(std::equality_comparable<int (S::*)() &&>);
+static_assert(std::equality_comparable<int (S::*)() && noexcept>);
+static_assert(std::equality_comparable<int (S::*)() const>);
+static_assert(std::equality_comparable<int (S::*)() const noexcept>);
+static_assert(std::equality_comparable<int (S::*)() const&>);
+static_assert(std::equality_comparable<int (S::*)() const & noexcept>);
+static_assert(std::equality_comparable<int (S::*)() const&&>);
+static_assert(std::equality_comparable<int (S::*)() const && noexcept>);
+static_assert(std::equality_comparable<int (S::*)() volatile>);
+static_assert(std::equality_comparable<int (S::*)() volatile noexcept>);
+static_assert(std::equality_comparable<int (S::*)() volatile&>);
+static_assert(std::equality_comparable<int (S::*)() volatile & noexcept>);
+static_assert(std::equality_comparable<int (S::*)() volatile&&>);
+static_assert(std::equality_comparable<int (S::*)() volatile && noexcept>);
+static_assert(std::equality_comparable<int (S::*)() const volatile>);
+static_assert(std::equality_comparable<int (S::*)() const volatile noexcept>);
+static_assert(std::equality_comparable<int (S::*)() const volatile&>);
+static_assert(std::equality_comparable<int (S::*)() const volatile & noexcept>);
+static_assert(std::equality_comparable<int (S::*)() const volatile&&>);
+static_assert(
+    std::equality_comparable<int (S::*)() const volatile && noexcept>);
+
+static_assert(!std::equality_comparable<void>);
+} // namespace fundamentals
+
+namespace standard_types {
+static_assert(std::equality_comparable<std::array<int, 10>>);
+static_assert(std::equality_comparable<std::deque<int>>);
+static_assert(std::equality_comparable<std::forward_list<int>>);
+static_assert(std::equality_comparable<std::list<int>>);
+static_assert(std::equality_comparable<std::map<int, void*>>);
+static_assert(std::equality_comparable<std::optional<int>>);
+static_assert(std::equality_comparable<std::set<int>>);
+static_assert(std::equality_comparable<std::unordered_map<int, void*>>);
+static_assert(std::equality_comparable<std::unordered_set<int>>);
+static_assert(std::equality_comparable<std::vector<bool>>);
+static_assert(std::equality_comparable<std::vector<int>>);
+} // namespace standard_types
+
+namespace types_fit_for_purpose {
+static_assert(std::equality_comparable<cxx20_member_eq>);
+static_assert(std::equality_comparable<cxx20_friend_eq>);
+static_assert(std::equality_comparable<member_three_way_comparable>);
+static_assert(std::equality_comparable<friend_three_way_comparable>);
+static_assert(std::equality_comparable<explicit_operators>);
+static_assert(std::equality_comparable<different_return_types>);
+static_assert(std::equality_comparable<one_member_one_friend>);
+static_assert(std::equality_comparable<equality_comparable_with_ec1>);
+
+static_assert(!std::equality_comparable<no_eq>);
+static_assert(!std::equality_comparable<no_neq>);
+static_assert(std::equality_comparable<no_lt>);
+static_assert(std::equality_comparable<no_gt>);
+static_assert(std::equality_comparable<no_le>);
+static_assert(std::equality_comparable<no_ge>);
+
+static_assert(!std::equality_comparable<wrong_return_type_eq>);
+static_assert(!std::equality_comparable<wrong_return_type_ne>);
+static_assert(std::equality_comparable<wrong_return_type_lt>);
+static_assert(std::equality_comparable<wrong_return_type_gt>);
+static_assert(std::equality_comparable<wrong_return_type_le>);
+static_assert(std::equality_comparable<wrong_return_type_ge>);
+static_assert(!std::equality_comparable<wrong_return_type>);
+static_assert(
+    !std::equality_comparable<cxx20_member_eq_operator_with_deleted_ne>);
+static_assert(
+    !std::equality_comparable<cxx20_friend_eq_operator_with_deleted_ne>);
+static_assert(
+    !std::equality_comparable<member_three_way_comparable_with_deleted_eq>);
+static_assert(
+    !std::equality_comparable<member_three_way_comparable_with_deleted_ne>);
+static_assert(
+    !std::equality_comparable<friend_three_way_comparable_with_deleted_eq>);
+static_assert(
+    !std::equality_comparable<friend_three_way_comparable_with_deleted_ne>);
+
+static_assert(!std::equality_comparable<eq_returns_explicit_bool>);
+static_assert(!std::equality_comparable<ne_returns_explicit_bool>);
+static_assert(std::equality_comparable<lt_returns_explicit_bool>);
+static_assert(std::equality_comparable<gt_returns_explicit_bool>);
+static_assert(std::equality_comparable<le_returns_explicit_bool>);
+static_assert(std::equality_comparable<ge_returns_explicit_bool>);
+static_assert(std::equality_comparable<returns_true_type>);
+static_assert(std::equality_comparable<returns_int_ptr>);
+} // namespace types_fit_for_purpose
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concept.equalitycomparable/equality_comparable_with.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concept.equalitycomparable/equality_comparable_with.compile.pass.cpp
new file mode 100644
index 0000000..ba8138f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concept.equalitycomparable/equality_comparable_with.compile.pass.cpp
@@ -0,0 +1,1124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class U>
+// concept equality_comparable_with = // see below
+
+#include <concepts>
+
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_THREADS
+#  include <mutex>
+#endif
+
+#include "compare_types.h"
+
+template <class T, class U>
+constexpr bool check_equality_comparable_with() {
+  constexpr bool result = std::equality_comparable_with<T, U>;
+  static_assert(std::equality_comparable_with<U, T> == result);
+  static_assert(std::equality_comparable_with<T, U const> == result);
+  static_assert(std::equality_comparable_with<T const, U const> == result);
+  static_assert(std::equality_comparable_with<T, U const&> == result);
+  static_assert(std::equality_comparable_with<T const, U const&> == result);
+  static_assert(std::equality_comparable_with<T&, U const> == result);
+  static_assert(std::equality_comparable_with<T const&, U const> == result);
+  static_assert(std::equality_comparable_with<T&, U const&> == result);
+  static_assert(std::equality_comparable_with<T const&, U const&> == result);
+  static_assert(std::equality_comparable_with<T, U const&&> == result);
+  static_assert(std::equality_comparable_with<T const, U const&&> == result);
+  static_assert(std::equality_comparable_with<T&, U const&&> == result);
+  static_assert(std::equality_comparable_with<T const&, U const&&> == result);
+  static_assert(std::equality_comparable_with<T&&, U const> == result);
+  static_assert(std::equality_comparable_with<T const&&, U const> == result);
+  static_assert(std::equality_comparable_with<T&&, U const&> == result);
+  static_assert(std::equality_comparable_with<T const&&, U const&> == result);
+  static_assert(std::equality_comparable_with<T&&, U const&&> == result);
+  static_assert(std::equality_comparable_with<T const&&, U const&&> == result);
+  return result;
+}
+
+namespace fundamentals {
+static_assert(check_equality_comparable_with<int, int>());
+static_assert(check_equality_comparable_with<int, bool>());
+static_assert(check_equality_comparable_with<int, char>());
+static_assert(check_equality_comparable_with<int, wchar_t>());
+static_assert(check_equality_comparable_with<int, double>());
+static_assert(!check_equality_comparable_with<int, int*>());
+static_assert(!check_equality_comparable_with<int, int[5]>());
+static_assert(!check_equality_comparable_with<int, int (*)()>());
+static_assert(!check_equality_comparable_with<int, int (&)()>());
+
+struct S {};
+static_assert(!check_equality_comparable_with<int, int S::*>());
+static_assert(!check_equality_comparable_with<int, int (S::*)()>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() noexcept>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() const>());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() const noexcept>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() volatile>());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int, int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() const&>());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() volatile&>());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() const volatile &
+                                                       noexcept>());
+static_assert(!check_equality_comparable_with<int, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int, int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int, int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int, int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int*, int*>());
+static_assert(check_equality_comparable_with<int*, int[5]>());
+static_assert(!check_equality_comparable_with<int*, int (*)()>());
+static_assert(!check_equality_comparable_with<int*, int (&)()>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)()>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() noexcept>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() const>());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() const noexcept>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() volatile>());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int*, int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() const&>());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() volatile&>());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int*, int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int*,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int*,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int*, int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int*,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int*, int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int*,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int[5], int[5]>());
+static_assert(!check_equality_comparable_with<int[5], int (*)()>());
+static_assert(!check_equality_comparable_with<int[5], int (&)()>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)()>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() noexcept>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() const>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() const noexcept>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() volatile>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int[5], int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() &>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() const&>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() const & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() volatile &
+                                                          noexcept>());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int[5], int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int[5],
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int[5], int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int[5],
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int[5],
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int[5], int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int[5],
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (*)(), int (*)()>());
+static_assert(check_equality_comparable_with<int (*)(), int (&)()>());
+static_assert(!check_equality_comparable_with<int (*)(), int (S::*)()>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() noexcept>());
+static_assert(!check_equality_comparable_with<int (*)(), int (S::*)() const>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() const noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() volatile>());
+static_assert(!check_equality_comparable_with<
+              int (*)(), int (S::*)() volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int (*)(), int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (*)(), int (S::*)() &>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (*)(),
+                                              int (S::*)() const & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<int (*)(), int (S::*)() volatile &
+                                                             noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (*)(), int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (*)(), int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (*)(),
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (*)(),
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (*)(), int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (*)(),
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (*)(),
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (*)(),
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (&)(), int (&)()>());
+static_assert(!check_equality_comparable_with<int (&)(), int (S::*)()>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() noexcept>());
+static_assert(!check_equality_comparable_with<int (&)(), int (S::*)() const>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() const noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() volatile>());
+static_assert(!check_equality_comparable_with<
+              int (&)(), int (S::*)() volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int (&)(), int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (&)(), int (S::*)() &>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (&)(),
+                                              int (S::*)() const & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<int (&)(), int (S::*)() volatile &
+                                                             noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (&)(), int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (&)(), int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (&)(),
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (&)(),
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (&)(), int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (&)(),
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (&)(),
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (&)(),
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)(), int (S::*)()>());
+static_assert(
+    check_equality_comparable_with<int (S::*)(), int (S::*)() noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() const>());
+static_assert(!check_equality_comparable_with<int (S::*)(),
+                                              int (S::*)() const noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)(), int (S::*)() volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)(),
+                                              int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)(), int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)(), int (S::*)() &>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)(),
+                                              int (S::*)() const & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)(), int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)(),
+                                              int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)(), int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)(), int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)(),
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)(),
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)(), int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)(),
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)(),
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)(),
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() noexcept,
+                                             int (S::*)() noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() noexcept, int (S::*)() volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() noexcept, int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() noexcept, int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() noexcept, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() noexcept, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() noexcept, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() noexcept,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() const, int (S::*)() const>());
+static_assert(check_equality_comparable_with<int (S::*)() const,
+                                             int (S::*)() const noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const, int (S::*)() volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const, int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const, int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const, int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const noexcept,
+                                             int (S::*)() const noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const noexcept, int (S::*)() volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() const volatile>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const noexcept,
+                                    int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const noexcept, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const noexcept,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const noexcept,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() volatile,
+                                             int (S::*)() volatile>());
+static_assert(check_equality_comparable_with<int (S::*)() volatile,
+                                             int (S::*)() volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() const volatile>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() volatile, int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile, int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() volatile, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() volatile, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                             int (S::*)() volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() const volatile>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                    int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                    int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile noexcept,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const volatile,
+                                             int (S::*)() const volatile>());
+static_assert(
+    check_equality_comparable_with<int (S::*)() const volatile,
+                                   int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() &>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() const volatile noexcept,
+                                   int (S::*)() const volatile noexcept>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() &>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() const&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile noexcept,
+                                    int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile noexcept,
+                                    int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile noexcept,
+                                    int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile noexcept,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile noexcept, int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile noexcept,
+                                    int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() &, int (S::*)() &>());
+static_assert(
+    check_equality_comparable_with<int (S::*)() &, int (S::*)() & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() &, int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() &,
+                                              int (S::*)() const & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() &, int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() &, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() &,
+                                              int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() &, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() &, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() &, int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() &, int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() &,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() & noexcept,
+                                             int (S::*)() & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() const&>());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() & noexcept, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() & noexcept,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() & noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() & noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() & noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() & noexcept,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() & noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() const&, int (S::*)() const&>());
+static_assert(check_equality_comparable_with<int (S::*)() const&,
+                                             int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const&,
+                                              int (S::*)() volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const&, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const&,
+                                              int (S::*)() const volatile&>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const&, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const&, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const&,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const&,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const&,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const & noexcept,
+                                             int (S::*)() const & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const & noexcept,
+                                              int (S::*)() volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const & noexcept,
+                                    int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const & noexcept,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const & noexcept,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const & noexcept,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const& noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const & noexcept,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const & noexcept,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const & noexcept,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() volatile&,
+                                             int (S::*)() volatile&>());
+static_assert(check_equality_comparable_with<
+              int (S::*)() volatile&, int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile&,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile&,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile&, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile&,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile&,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile&,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile&,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                   int (S::*)() volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                              int (S::*)() const volatile&>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                    int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile& noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile & noexcept,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const volatile&,
+                                             int (S::*)() const volatile&>());
+static_assert(
+    check_equality_comparable_with<int (S::*)() const volatile&,
+                                   int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile&,
+                                              int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile&,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile&,
+                                              int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile&,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const volatile&,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const volatile&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() const volatile & noexcept,
+                                   int (S::*)() const volatile & noexcept>());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile & noexcept, int (S::*)() &&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile& noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_equality_comparable_with<
+              int (S::*)() const volatile & noexcept, int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile & noexcept,
+                                    int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() const volatile & noexcept,
+                                    int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)()
+                                                    const volatile& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() &&, int (S::*)() &&>());
+static_assert(check_equality_comparable_with<int (S::*)() &&,
+                                             int (S::*)() && noexcept>());
+static_assert(
+    !check_equality_comparable_with<int (S::*)() &&, int (S::*)() const&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() &&,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() &&,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() &&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() && noexcept,
+                                             int (S::*)() && noexcept>());
+static_assert(!check_equality_comparable_with < int (S::*)() && noexcept,
+              int (S::*)() const&& > ());
+static_assert(!check_equality_comparable_with < int (S::*)() && noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_equality_comparable_with < int (S::*)() && noexcept,
+              int (S::*)() volatile&& > ());
+static_assert(!check_equality_comparable_with < int (S::*)() && noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with < int (S::*)() && noexcept,
+              int (S::*)() const volatile&& > ());
+static_assert(!check_equality_comparable_with < int (S::*)() && noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const&&,
+                                             int (S::*)() const&&>());
+static_assert(check_equality_comparable_with<int (S::*)() const&&,
+                                             int (S::*)() const && noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() const&&,
+                                              int (S::*)() volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with<int (S::*)() const&&,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const && noexcept,
+                                             int (S::*)() const && noexcept>());
+static_assert(!check_equality_comparable_with < int (S::*)() const&& noexcept,
+              int (S::*)() volatile&& > ());
+static_assert(!check_equality_comparable_with < int (S::*)() const&& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_equality_comparable_with < int (S::*)() const&& noexcept,
+              int (S::*)() const volatile&& > ());
+static_assert(!check_equality_comparable_with < int (S::*)() const&& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() volatile&&,
+                                             int (S::*)() volatile&&>());
+static_assert(check_equality_comparable_with<
+              int (S::*)() volatile&&, int (S::*)() volatile && noexcept>());
+static_assert(!check_equality_comparable_with<int (S::*)() volatile&&,
+                                              int (S::*)() const volatile&&>());
+static_assert(!check_equality_comparable_with < int (S::*)() volatile&&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    check_equality_comparable_with<int (S::*)() volatile && noexcept,
+                                   int (S::*)() volatile && noexcept>());
+static_assert(!check_equality_comparable_with <
+                  int (S::*)() volatile&& noexcept,
+              int (S::*)() const volatile&& > ());
+static_assert(!check_equality_comparable_with <
+                  int (S::*)() volatile&& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_equality_comparable_with<int (S::*)() const volatile&&,
+                                             int (S::*)() const volatile&&>());
+static_assert(
+    check_equality_comparable_with<int (S::*)() const volatile&&,
+                                   int (S::*)() const volatile && noexcept>());
+static_assert(
+    check_equality_comparable_with<int (S::*)() const volatile && noexcept,
+                                   int (S::*)() const volatile && noexcept>());
+
+static_assert(!check_equality_comparable_with<std::nullptr_t, int>());
+static_assert(check_equality_comparable_with<std::nullptr_t, int*>());
+static_assert(check_equality_comparable_with<std::nullptr_t, int[5]>());
+static_assert(check_equality_comparable_with<std::nullptr_t, int (*)()>());
+static_assert(check_equality_comparable_with<std::nullptr_t, int (&)()>());
+static_assert(check_equality_comparable_with<std::nullptr_t, int (S::*)()>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() const>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() const noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() volatile>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() volatile noexcept>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() const volatile>());
+static_assert(check_equality_comparable_with<
+              std::nullptr_t, int (S::*)() const volatile noexcept>());
+static_assert(check_equality_comparable_with<std::nullptr_t, int (S::*)() &>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() & noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() const&>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() const & noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() volatile&>());
+static_assert(check_equality_comparable_with<
+              std::nullptr_t, int (S::*)() volatile & noexcept>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() const volatile&>());
+static_assert(check_equality_comparable_with<
+              std::nullptr_t, int (S::*)() const volatile & noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() &&>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() && noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() const&&>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() const && noexcept>());
+static_assert(
+    check_equality_comparable_with<std::nullptr_t, int (S::*)() volatile&&>());
+static_assert(check_equality_comparable_with<
+              std::nullptr_t, int (S::*)() volatile && noexcept>());
+static_assert(check_equality_comparable_with<std::nullptr_t,
+                                             int (S::*)() const volatile&&>());
+static_assert(check_equality_comparable_with<
+              std::nullptr_t, int (S::*)() const volatile && noexcept>());
+
+static_assert(!std::equality_comparable_with<void, int>);
+static_assert(!std::equality_comparable_with<void, int*>);
+static_assert(!std::equality_comparable_with<void, std::nullptr_t>);
+static_assert(!std::equality_comparable_with<void, int[5]>);
+static_assert(!std::equality_comparable_with<void, int (*)()>);
+static_assert(!std::equality_comparable_with<void, int (&)()>);
+static_assert(!std::equality_comparable_with<void, int S::*>);
+static_assert(!std::equality_comparable_with<void, int (S::*)()>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() volatile>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() volatile noexcept>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() &>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() & noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const&>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const & noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() volatile&>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() volatile & noexcept>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile&>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const volatile &
+                                                       noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() &&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() && noexcept >);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const&&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() const&& noexcept >);
+static_assert(!std::equality_comparable_with<void, int (S::*)() volatile&&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() volatile&& noexcept >);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile&&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() const volatile&& noexcept >);
+} // namespace fundamentals
+
+namespace standard_types {
+static_assert(check_equality_comparable_with<std::array<int, 10>,
+                                             std::array<int, 10> >());
+static_assert(!check_equality_comparable_with<std::array<int, 10>,
+                                              std::array<double, 10> >());
+static_assert(
+    check_equality_comparable_with<std::deque<int>, std::deque<int> >());
+static_assert(
+    !check_equality_comparable_with<std::deque<int>, std::vector<int> >());
+static_assert(check_equality_comparable_with<std::forward_list<int>,
+                                             std::forward_list<int> >());
+static_assert(!check_equality_comparable_with<std::forward_list<int>,
+                                              std::vector<int> >());
+static_assert(
+    check_equality_comparable_with<std::list<int>, std::list<int> >());
+static_assert(
+    !check_equality_comparable_with<std::list<int>, std::vector<int> >());
+
+#ifndef TEST_HAS_NO_THREADS
+static_assert(!check_equality_comparable_with<std::lock_guard<std::mutex>,
+                                              std::lock_guard<std::mutex> >());
+static_assert(!check_equality_comparable_with<std::lock_guard<std::mutex>,
+                                              std::vector<int> >());
+static_assert(!check_equality_comparable_with<std::mutex, std::mutex>());
+static_assert(!check_equality_comparable_with<std::mutex, std::vector<int> >());
+#endif
+
+static_assert(check_equality_comparable_with<std::map<int, void*>,
+                                             std::map<int, void*> >());
+static_assert(
+    !check_equality_comparable_with<std::map<int, void*>, std::vector<int> >());
+static_assert(
+    check_equality_comparable_with<std::optional<std::vector<int> >,
+                                   std::optional<std::vector<int> > >());
+static_assert(check_equality_comparable_with<std::optional<std::vector<int> >,
+                                             std::vector<int> >());
+static_assert(
+    check_equality_comparable_with<std::vector<int>, std::vector<int> >());
+static_assert(!check_equality_comparable_with<std::vector<int>, int>());
+} // namespace standard_types
+
+namespace types_fit_for_purpose {
+static_assert(
+    check_equality_comparable_with<cxx20_member_eq, cxx20_member_eq>());
+static_assert(
+    check_equality_comparable_with<cxx20_friend_eq, cxx20_friend_eq>());
+static_assert(
+    !check_equality_comparable_with<cxx20_member_eq, cxx20_friend_eq>());
+
+static_assert(check_equality_comparable_with<member_three_way_comparable,
+                                             member_three_way_comparable>());
+static_assert(check_equality_comparable_with<friend_three_way_comparable,
+                                             friend_three_way_comparable>());
+static_assert(!check_equality_comparable_with<member_three_way_comparable,
+                                              friend_three_way_comparable>());
+
+static_assert(
+    check_equality_comparable_with<explicit_operators, explicit_operators>());
+static_assert(check_equality_comparable_with<equality_comparable_with_ec1,
+                                             equality_comparable_with_ec1>());
+static_assert(check_equality_comparable_with<different_return_types,
+                                             different_return_types>());
+static_assert(check_equality_comparable_with<explicit_operators,
+                                             equality_comparable_with_ec1>());
+static_assert(check_equality_comparable_with<explicit_operators,
+                                             different_return_types>());
+
+static_assert(check_equality_comparable_with<one_way_eq, one_way_eq>());
+static_assert(
+    std::common_reference_with<one_way_eq const&, explicit_operators const&>);
+static_assert(
+    !check_equality_comparable_with<one_way_eq, explicit_operators>());
+
+static_assert(check_equality_comparable_with<one_way_ne, one_way_ne>());
+static_assert(
+    std::common_reference_with<one_way_ne const&, explicit_operators const&>);
+static_assert(
+    !check_equality_comparable_with<one_way_ne, explicit_operators>());
+} // namespace types_fit_for_purpose
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concepts.totallyordered/totally_ordered.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concepts.totallyordered/totally_ordered.pass.cpp
new file mode 100644
index 0000000..2e9dd0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concepts.totallyordered/totally_ordered.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept totally_ordered;
+
+#include <concepts>
+
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "compare_types.h"
+#include "test_macros.h"
+
+// `models_totally_ordered` checks that `std::totally_ordered` subsumes
+// `std::equality_comparable`. This overload should *never* be called.
+template <std::equality_comparable T>
+constexpr bool models_totally_ordered() noexcept {
+  return false;
+}
+
+template <std::totally_ordered T>
+constexpr bool models_totally_ordered() noexcept {
+  return true;
+}
+
+namespace fundamentals {
+static_assert(models_totally_ordered<int>());
+static_assert(models_totally_ordered<double>());
+static_assert(models_totally_ordered<void*>());
+static_assert(models_totally_ordered<char*>());
+static_assert(models_totally_ordered<char const*>());
+static_assert(models_totally_ordered<char volatile*>());
+static_assert(models_totally_ordered<char const volatile*>());
+static_assert(models_totally_ordered<wchar_t&>());
+static_assert(models_totally_ordered<char8_t const&>());
+static_assert(models_totally_ordered<char16_t volatile&>());
+static_assert(models_totally_ordered<char32_t const volatile&>());
+static_assert(models_totally_ordered<unsigned char&&>());
+static_assert(models_totally_ordered<unsigned short const&&>());
+static_assert(models_totally_ordered<unsigned int volatile&&>());
+static_assert(models_totally_ordered<unsigned long const volatile&&>());
+static_assert(models_totally_ordered<int[5]>());
+static_assert(models_totally_ordered<int (*)(int)>());
+static_assert(models_totally_ordered<int (&)(int)>());
+static_assert(models_totally_ordered<int (*)(int) noexcept>());
+static_assert(models_totally_ordered<int (&)(int) noexcept>());
+
+#ifndef TEST_COMPILER_GCC
+static_assert(!std::totally_ordered<std::nullptr_t>);
+#endif
+
+struct S {};
+static_assert(!std::totally_ordered<S>);
+static_assert(!std::totally_ordered<int S::*>);
+static_assert(!std::totally_ordered<int (S::*)()>);
+static_assert(!std::totally_ordered<int (S::*)() noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() &>);
+static_assert(!std::totally_ordered<int (S::*)() & noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() &&>);
+static_assert(!std::totally_ordered < int (S::*)() && noexcept >);
+static_assert(!std::totally_ordered<int (S::*)() const>);
+static_assert(!std::totally_ordered<int (S::*)() const noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() const&>);
+static_assert(!std::totally_ordered<int (S::*)() const & noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() const&&>);
+static_assert(!std::totally_ordered < int (S::*)() const&& noexcept >);
+static_assert(!std::totally_ordered<int (S::*)() volatile>);
+static_assert(!std::totally_ordered<int (S::*)() volatile noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() volatile&>);
+static_assert(!std::totally_ordered<int (S::*)() volatile & noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() volatile&&>);
+static_assert(!std::totally_ordered < int (S::*)() volatile&& noexcept >);
+static_assert(!std::totally_ordered<int (S::*)() const volatile>);
+static_assert(!std::totally_ordered<int (S::*)() const volatile noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() const volatile&>);
+static_assert(!std::totally_ordered<int (S::*)() const volatile & noexcept>);
+static_assert(!std::totally_ordered<int (S::*)() const volatile&&>);
+static_assert(!std::totally_ordered < int (S::*)() const volatile&& noexcept >);
+
+static_assert(!std::totally_ordered<void>);
+} // namespace fundamentals
+
+namespace standard_types {
+static_assert(models_totally_ordered<std::array<int, 10> >());
+static_assert(models_totally_ordered<std::deque<int> >());
+static_assert(models_totally_ordered<std::forward_list<int> >());
+static_assert(models_totally_ordered<std::list<int> >());
+static_assert(models_totally_ordered<std::optional<int> >());
+static_assert(models_totally_ordered<std::set<int> >());
+static_assert(models_totally_ordered<std::vector<bool> >());
+static_assert(models_totally_ordered<std::vector<int> >());
+
+static_assert(!std::totally_ordered<std::unordered_map<int, void*> >);
+static_assert(!std::totally_ordered<std::unordered_set<int> >);
+
+struct A {};
+// FIXME(cjdb): uncomment when operator<=> is implemented for each of these types.
+// static_assert(!std::totally_ordered<std::array<A, 10> >);
+// static_assert(!std::totally_ordered<std::deque<A> >);
+// static_assert(!std::totally_ordered<std::forward_list<A> >);
+// static_assert(!std::totally_ordered<std::list<A> >);
+// static_assert(!std::totally_ordered<std::set<A> >);
+// static_assert(!std::totally_ordered<std::vector<A> >);
+} // namespace standard_types
+
+namespace types_fit_for_purpose {
+static_assert(models_totally_ordered<member_three_way_comparable>());
+static_assert(models_totally_ordered<friend_three_way_comparable>());
+static_assert(models_totally_ordered<explicit_operators>());
+static_assert(models_totally_ordered<different_return_types>());
+static_assert(!std::totally_ordered<cxx20_member_eq>);
+static_assert(!std::totally_ordered<cxx20_friend_eq>);
+static_assert(!std::totally_ordered<one_member_one_friend>);
+static_assert(!std::totally_ordered<equality_comparable_with_ec1>);
+
+static_assert(!std::totally_ordered<no_eq>);
+static_assert(!std::totally_ordered<no_neq>);
+static_assert(!std::totally_ordered<no_lt>);
+static_assert(!std::totally_ordered<no_gt>);
+static_assert(!std::totally_ordered<no_le>);
+static_assert(!std::totally_ordered<no_ge>);
+
+static_assert(!std::totally_ordered<wrong_return_type_eq>);
+static_assert(!std::totally_ordered<wrong_return_type_ne>);
+static_assert(!std::totally_ordered<wrong_return_type_lt>);
+static_assert(!std::totally_ordered<wrong_return_type_gt>);
+static_assert(!std::totally_ordered<wrong_return_type_le>);
+static_assert(!std::totally_ordered<wrong_return_type_ge>);
+static_assert(!std::totally_ordered<wrong_return_type>);
+
+static_assert(!std::totally_ordered<cxx20_member_eq_operator_with_deleted_ne>);
+static_assert(!std::totally_ordered<cxx20_friend_eq_operator_with_deleted_ne>);
+static_assert(
+    !std::totally_ordered<member_three_way_comparable_with_deleted_eq>);
+static_assert(
+    !std::totally_ordered<member_three_way_comparable_with_deleted_ne>);
+static_assert(
+    !std::totally_ordered<friend_three_way_comparable_with_deleted_eq>);
+static_assert(
+    !std::totally_ordered<friend_three_way_comparable_with_deleted_ne>);
+
+static_assert(!std::totally_ordered<eq_returns_explicit_bool>);
+static_assert(!std::totally_ordered<ne_returns_explicit_bool>);
+static_assert(!std::totally_ordered<lt_returns_explicit_bool>);
+static_assert(!std::totally_ordered<gt_returns_explicit_bool>);
+static_assert(!std::totally_ordered<le_returns_explicit_bool>);
+static_assert(!std::totally_ordered<ge_returns_explicit_bool>);
+static_assert(std::totally_ordered<returns_true_type>);
+static_assert(std::totally_ordered<returns_int_ptr>);
+
+static_assert(std::totally_ordered<partial_ordering_totally_ordered_with>);
+static_assert(std::totally_ordered<weak_ordering_totally_ordered_with>);
+static_assert(std::totally_ordered<strong_ordering_totally_ordered_with>);
+} // namespace types_fit_for_purpose
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concepts.totallyordered/totally_ordered_with.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concepts.totallyordered/totally_ordered_with.pass.cpp
new file mode 100644
index 0000000..54861c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.compare/concepts.totallyordered/totally_ordered_with.pass.cpp
@@ -0,0 +1,1141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept totally_ordered_with;
+
+#include <concepts>
+
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "compare_types.h"
+#include "test_macros.h"
+
+template <class T, class U>
+constexpr bool check_totally_ordered_with() noexcept {
+  constexpr bool result = std::totally_ordered_with<T, U>;
+  static_assert(std::totally_ordered_with<U, T> == result);
+  static_assert(std::totally_ordered_with<T, U const> == result);
+  static_assert(std::totally_ordered_with<T const, U const> == result);
+  static_assert(std::totally_ordered_with<T, U const&> == result);
+  static_assert(std::totally_ordered_with<T const, U const&> == result);
+  static_assert(std::totally_ordered_with<T&, U const> == result);
+  static_assert(std::totally_ordered_with<T const&, U const> == result);
+  static_assert(std::totally_ordered_with<T&, U const&> == result);
+  static_assert(std::totally_ordered_with<T const&, U const&> == result);
+  static_assert(std::totally_ordered_with<T, U const&&> == result);
+  static_assert(std::totally_ordered_with<T const, U const&&> == result);
+  static_assert(std::totally_ordered_with<T&, U const&&> == result);
+  static_assert(std::totally_ordered_with<T const&, U const&&> == result);
+  static_assert(std::totally_ordered_with<T&&, U const> == result);
+  static_assert(std::totally_ordered_with<T const&&, U const> == result);
+  static_assert(std::totally_ordered_with<T&&, U const&> == result);
+  static_assert(std::totally_ordered_with<T const&&, U const&> == result);
+  static_assert(std::totally_ordered_with<T&&, U const&&> == result);
+  static_assert(std::totally_ordered_with<T const&&, U const&&> == result);
+  return result;
+}
+
+namespace fundamentals {
+static_assert(check_totally_ordered_with<int, int>());
+static_assert(check_totally_ordered_with<int, bool>());
+static_assert(check_totally_ordered_with<int, char>());
+static_assert(check_totally_ordered_with<int, wchar_t>());
+static_assert(check_totally_ordered_with<int, double>());
+static_assert(!check_totally_ordered_with<int, int*>());
+static_assert(!check_totally_ordered_with<int, int[5]>());
+static_assert(!check_totally_ordered_with<int, int (*)()>());
+static_assert(!check_totally_ordered_with<int, int (&)()>());
+
+struct S {};
+static_assert(!check_totally_ordered_with<int, int S::*>());
+static_assert(!check_totally_ordered_with<int, int (S::*)()>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() const>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() volatile>());
+static_assert(
+    !check_totally_ordered_with<int, int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() const volatile>());
+static_assert(
+    !check_totally_ordered_with<int, int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() const&>());
+static_assert(
+    !check_totally_ordered_with<int, int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() volatile&>());
+static_assert(
+    !check_totally_ordered_with<int, int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int, int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int, int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int, int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int, int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_totally_ordered_with<int*, int*>());
+static_assert(check_totally_ordered_with<int*, int[5]>());
+static_assert(!check_totally_ordered_with<int*, int (*)()>());
+static_assert(!check_totally_ordered_with<int*, int (&)()>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)()>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() const>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() volatile>());
+static_assert(
+    !check_totally_ordered_with<int*, int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() const volatile>());
+static_assert(
+    !check_totally_ordered_with<int*, int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() const&>());
+static_assert(
+    !check_totally_ordered_with<int*, int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() volatile&>());
+static_assert(
+    !check_totally_ordered_with<int*, int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int*, int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() const volatile &
+                                                    noexcept>());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int*,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int*,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int*, int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int*,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int*, int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int*,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_totally_ordered_with<int[5], int[5]>());
+static_assert(!check_totally_ordered_with<int[5], int (*)()>());
+static_assert(!check_totally_ordered_with<int[5], int (&)()>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)()>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() noexcept>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() const>());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() volatile>());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int[5], int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() const&>());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() volatile&>());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() const volatile &
+                                                      noexcept>());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int[5],
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int[5],
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int[5], int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int[5],
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int[5], int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int[5],
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_totally_ordered_with<int (*)(), int (*)()>());
+static_assert(check_totally_ordered_with<int (*)(), int (&)()>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)()>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() noexcept>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() const>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() volatile>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int (*)(), int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() &>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() const&>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (*)(), int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (*)(),
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (*)(), int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (*)(),
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (*)(),
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (*)(), int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (*)(),
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(check_totally_ordered_with<int (&)(), int (&)()>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)()>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() noexcept>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() const>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() volatile>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int (&)(), int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() &>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() const&>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (&)(), int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (&)(),
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (&)(), int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (&)(),
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (&)(),
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (&)(), int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (&)(),
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)(), int (S::*)()>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)(), int (S::*)() const>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() const noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() volatile>());
+static_assert(!check_totally_ordered_with<int (S::*)(),
+                                          int (S::*)() volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)(), int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)(), int (S::*)() &>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)(), int (S::*)() const&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() const & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)(),
+                                          int (S::*)() volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)(), int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)(), int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)(),
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)(),
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)(),
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)(), int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)(),
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() noexcept, int (S::*)() const>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() volatile>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() noexcept, int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() noexcept, int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() noexcept, int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() noexcept, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() noexcept, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() noexcept, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() const>());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() const noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() volatile>());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() const, int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() &>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() const & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() const, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const, int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() volatile>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const volatile>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const noexcept,
+                                int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const noexcept, int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() volatile>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() volatile, int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile, int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile, int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() volatile, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() const volatile>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() const volatile>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile,
+                                int (S::*)() const volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile, int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() &>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() &, int (S::*)() &>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &, int (S::*)() & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &, int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() &,
+                                          int (S::*)() const & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &, int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() &,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() &,
+                                          int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() &, int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() &, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &, int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() &,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() & noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() & noexcept, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() & noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() & noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() & noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() & noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() & noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const&, int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const&,
+                                          int (S::*)() const & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const&, int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const&,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const&,
+                                          int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() const&, int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const&, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const&, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const&,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() const & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const & noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const& noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const & noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&,
+                                          int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile&,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile&, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile& noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile & noexcept,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile&,
+                                          int (S::*)() const volatile&>());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile&,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile&,
+                                          int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile&,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile&,
+                                          int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile&,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile & noexcept,
+                                int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() const volatile & noexcept, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile& noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with<
+              int (S::*)() const volatile & noexcept, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile & noexcept,
+                                int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const volatile & noexcept,
+                                int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() &&, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &&,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &&, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &&,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<int (S::*)() &&, int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() &&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() &&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() && noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() const&& > ());
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() volatile&& > ());
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() const volatile&& > ());
+static_assert(!check_totally_ordered_with < int (S::*)() && noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(
+    !check_totally_ordered_with<int (S::*)() const&&, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&&,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const&&,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() const&&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const&&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with < int (S::*)() const&& noexcept,
+              int (S::*)() const&& noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)() const&& noexcept,
+              int (S::*)() volatile&& > ());
+static_assert(!check_totally_ordered_with < int (S::*)() const&& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)() const&& noexcept,
+              int (S::*)() const volatile&& > ());
+static_assert(!check_totally_ordered_with < int (S::*)() const&& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&&,
+                                          int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&&,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<int (S::*)() volatile&&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&&,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&& noexcept,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&& noexcept,
+              int (S::*)() const volatile&& > ());
+static_assert(!check_totally_ordered_with < int (S::*)() volatile&& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!check_totally_ordered_with<int (S::*)() const volatile&&,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < int (S::*)() const volatile&&,
+              int (S::*)() const volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with < int (S::*)()
+                                                const volatile&& noexcept,
+              int (S::*)() const volatile&& noexcept > ());
+
+#if !defined(TEST_COMPILER_GCC)
+static_assert(!check_totally_ordered_with<std::nullptr_t, int>());
+
+static_assert(!check_totally_ordered_with<std::nullptr_t, int*>());
+static_assert(!check_totally_ordered_with<std::nullptr_t, int[]>());
+static_assert(!check_totally_ordered_with<std::nullptr_t, int[5]>());
+static_assert(!check_totally_ordered_with<std::nullptr_t, int (*)()>());
+static_assert(!check_totally_ordered_with<std::nullptr_t, int (&)()>());
+#endif
+
+static_assert(!check_totally_ordered_with<std::nullptr_t, int (S::*)()>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() noexcept>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() const>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() const noexcept>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() volatile>());
+static_assert(!check_totally_ordered_with<std::nullptr_t,
+                                          int (S::*)() volatile noexcept>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() const volatile>());
+static_assert(!check_totally_ordered_with<
+              std::nullptr_t, int (S::*)() const volatile noexcept>());
+static_assert(!check_totally_ordered_with<std::nullptr_t, int (S::*)() &>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() & noexcept>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() const&>());
+static_assert(!check_totally_ordered_with<std::nullptr_t,
+                                          int (S::*)() const & noexcept>());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() volatile&>());
+static_assert(!check_totally_ordered_with<std::nullptr_t,
+                                          int (S::*)() volatile & noexcept>());
+static_assert(!check_totally_ordered_with<std::nullptr_t,
+                                          int (S::*)() const volatile&>());
+static_assert(!check_totally_ordered_with<
+              std::nullptr_t, int (S::*)() const volatile & noexcept>());
+static_assert(!check_totally_ordered_with<std::nullptr_t, int (S::*)() &&>());
+static_assert(!check_totally_ordered_with < std::nullptr_t,
+              int (S::*)() && noexcept > ());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() const&&>());
+static_assert(!check_totally_ordered_with < std::nullptr_t,
+              int (S::*)() const&& noexcept > ());
+static_assert(
+    !check_totally_ordered_with<std::nullptr_t, int (S::*)() volatile&&>());
+static_assert(!check_totally_ordered_with < std::nullptr_t,
+              int (S::*)() volatile&& noexcept > ());
+static_assert(!check_totally_ordered_with<std::nullptr_t,
+                                          int (S::*)() const volatile&&>());
+static_assert(!check_totally_ordered_with < std::nullptr_t,
+              int (S::*)() const volatile&& noexcept > ());
+
+static_assert(!std::equality_comparable_with<void, int>);
+static_assert(!std::equality_comparable_with<void, int*>);
+static_assert(!std::equality_comparable_with<void, std::nullptr_t>);
+static_assert(!std::equality_comparable_with<void, int[5]>);
+static_assert(!std::equality_comparable_with<void, int (*)()>);
+static_assert(!std::equality_comparable_with<void, int (&)()>);
+static_assert(!std::equality_comparable_with<void, int S::*>);
+static_assert(!std::equality_comparable_with<void, int (S::*)()>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() volatile>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() volatile noexcept>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() &>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() & noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const&>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const & noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() volatile&>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() volatile & noexcept>);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile&>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const volatile &
+                                                       noexcept>);
+static_assert(!std::equality_comparable_with<void, int (S::*)() &&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() && noexcept >);
+static_assert(!std::equality_comparable_with<void, int (S::*)() const&&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() const&& noexcept >);
+static_assert(!std::equality_comparable_with<void, int (S::*)() volatile&&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() volatile&& noexcept >);
+static_assert(
+    !std::equality_comparable_with<void, int (S::*)() const volatile&&>);
+static_assert(!std::equality_comparable_with < void,
+              int (S::*)() const volatile&& noexcept >);
+} // namespace fundamentals
+
+namespace standard_types {
+static_assert(
+    check_totally_ordered_with<std::array<int, 10>, std::array<int, 10> >());
+static_assert(!check_totally_ordered_with<std::array<int, 10>,
+                                          std::array<double, 10> >());
+static_assert(check_totally_ordered_with<std::deque<int>, std::deque<int> >());
+static_assert(
+    !check_totally_ordered_with<std::deque<int>, std::vector<int> >());
+static_assert(check_totally_ordered_with<std::forward_list<int>,
+                                         std::forward_list<int> >());
+static_assert(
+    !check_totally_ordered_with<std::forward_list<int>, std::vector<int> >());
+static_assert(check_totally_ordered_with<std::list<int>, std::list<int> >());
+static_assert(!check_totally_ordered_with<std::list<int>, std::vector<int> >());
+
+static_assert(
+    check_totally_ordered_with<std::map<int, void*>, std::map<int, void*> >());
+static_assert(
+    !check_totally_ordered_with<std::map<int, void*>, std::vector<int> >());
+static_assert(check_totally_ordered_with<std::optional<std::vector<int> >,
+                                         std::optional<std::vector<int> > >());
+static_assert(check_totally_ordered_with<std::optional<std::vector<int> >,
+                                         std::vector<int> >());
+static_assert(
+    check_totally_ordered_with<std::vector<int>, std::vector<int> >());
+static_assert(!check_totally_ordered_with<std::vector<int>, int>());
+
+struct A {};
+// FIXME(cjdb): uncomment when operator<=> is implemented for each of these types.
+// static_assert(!check_totally_ordered_with<std::optional<std::vector<A> >,
+//                                          std::optional<std::vector<A> > >());
+// static_assert(!check_totally_ordered_with<std::optional<std::vector<A> >,
+//                                          std::vector<A> >());
+struct B {};
+static_assert(!check_totally_ordered_with<std::vector<A>, std::vector<B> >());
+static_assert(
+    !check_totally_ordered_with<std::optional<A>, std::optional<B> >());
+} // namespace standard_types
+
+namespace types_fit_for_purpose {
+static_assert(!check_totally_ordered_with<cxx20_member_eq, cxx20_member_eq>());
+static_assert(!check_totally_ordered_with<cxx20_friend_eq, cxx20_friend_eq>());
+static_assert(!check_totally_ordered_with<cxx20_member_eq, cxx20_friend_eq>());
+
+static_assert(check_totally_ordered_with<member_three_way_comparable,
+                                         member_three_way_comparable>());
+static_assert(check_totally_ordered_with<friend_three_way_comparable,
+                                         friend_three_way_comparable>());
+static_assert(!check_totally_ordered_with<member_three_way_comparable,
+                                          friend_three_way_comparable>());
+
+static_assert(
+    check_totally_ordered_with<explicit_operators, explicit_operators>());
+static_assert(!check_totally_ordered_with<equality_comparable_with_ec1,
+                                          equality_comparable_with_ec1>());
+static_assert(check_totally_ordered_with<different_return_types,
+                                         different_return_types>());
+static_assert(!check_totally_ordered_with<explicit_operators,
+                                          equality_comparable_with_ec1>());
+static_assert(
+    check_totally_ordered_with<explicit_operators, different_return_types>());
+
+static_assert(!check_totally_ordered_with<one_way_eq, one_way_eq>());
+static_assert(
+    std::common_reference_with<one_way_eq const&, explicit_operators const&> &&
+    !check_totally_ordered_with<one_way_eq, explicit_operators>());
+
+static_assert(!check_totally_ordered_with<one_way_ne, one_way_ne>());
+static_assert(
+    std::common_reference_with<one_way_ne const&, explicit_operators const&> &&
+    !check_totally_ordered_with<one_way_ne, explicit_operators>());
+
+static_assert(
+    check_totally_ordered_with<totally_ordered_with_others,
+                               partial_ordering_totally_ordered_with>());
+static_assert(check_totally_ordered_with<totally_ordered_with_others,
+                                         weak_ordering_totally_ordered_with>());
+static_assert(
+    check_totally_ordered_with<totally_ordered_with_others,
+                               strong_ordering_totally_ordered_with>());
+
+static_assert(!check_totally_ordered_with<totally_ordered_with_others,
+                                          eq_returns_explicit_bool>());
+static_assert(!check_totally_ordered_with<totally_ordered_with_others,
+                                          ne_returns_explicit_bool>());
+static_assert(std::equality_comparable_with<totally_ordered_with_others,
+                                            lt_returns_explicit_bool> &&
+              !check_totally_ordered_with<totally_ordered_with_others,
+                                          lt_returns_explicit_bool>());
+static_assert(std::equality_comparable_with<totally_ordered_with_others,
+                                            gt_returns_explicit_bool> &&
+              !check_totally_ordered_with<totally_ordered_with_others,
+                                          gt_returns_explicit_bool>());
+static_assert(std::equality_comparable_with<totally_ordered_with_others,
+                                            le_returns_explicit_bool> &&
+              !check_totally_ordered_with<totally_ordered_with_others,
+                                          le_returns_explicit_bool>());
+static_assert(std::equality_comparable_with<totally_ordered_with_others,
+                                            ge_returns_explicit_bool> &&
+              !check_totally_ordered_with<totally_ordered_with_others,
+                                          ge_returns_explicit_bool>());
+static_assert(check_totally_ordered_with<totally_ordered_with_others,
+                                         returns_true_type>());
+static_assert(
+    check_totally_ordered_with<totally_ordered_with_others, returns_int_ptr>());
+
+static_assert(
+    std::totally_ordered<no_lt_not_totally_ordered_with>&&
+        std::equality_comparable_with<totally_ordered_with_others,
+                                      no_lt_not_totally_ordered_with> &&
+    !check_totally_ordered_with<totally_ordered_with_others,
+                                no_lt_not_totally_ordered_with>());
+static_assert(
+    std::totally_ordered<no_gt_not_totally_ordered_with>&&
+        std::equality_comparable_with<totally_ordered_with_others,
+                                      no_gt_not_totally_ordered_with> &&
+    !check_totally_ordered_with<totally_ordered_with_others,
+                                no_gt_not_totally_ordered_with>());
+static_assert(
+    std::totally_ordered<no_le_not_totally_ordered_with>&&
+        std::equality_comparable_with<totally_ordered_with_others,
+                                      no_le_not_totally_ordered_with> &&
+    !check_totally_ordered_with<totally_ordered_with_others,
+                                no_le_not_totally_ordered_with>());
+static_assert(
+    std::totally_ordered<no_ge_not_totally_ordered_with>&&
+        std::equality_comparable_with<totally_ordered_with_others,
+                                      no_ge_not_totally_ordered_with> &&
+    !check_totally_ordered_with<totally_ordered_with_others,
+                                no_ge_not_totally_ordered_with>());
+} // namespace types_fit_for_purpose
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.assignable/assignable_from.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.assignable/assignable_from.compile.pass.cpp
new file mode 100644
index 0000000..0a87c62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.assignable/assignable_from.compile.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class LHS, class RHS>
+// concept assignable_from =
+//   std::is_lvalue_reference_v<LHS> &&
+//   std::common_reference_with<
+//     const std::remove_reference_t<LHS>&,
+//     const std::remove_reference_t<RHS>&> &&
+//   requires (LHS lhs, RHS&& rhs) {
+//     { lhs = std::forward<RHS>(rhs) } -> std::same_as<LHS>;
+//   };
+
+#include <concepts>
+#include <type_traits>
+
+#include "MoveOnly.h"
+
+struct NoCommonRef {
+  NoCommonRef& operator=(const int&);
+};
+static_assert(std::is_assignable_v<NoCommonRef&, const int&>);
+static_assert(!std::assignable_from<NoCommonRef&, const int&>); // no common reference type
+
+struct Base {};
+struct Derived : Base {};
+static_assert(!std::assignable_from<Base*, Derived*>);
+static_assert( std::assignable_from<Base*&, Derived*>);
+static_assert( std::assignable_from<Base*&, Derived*&>);
+static_assert( std::assignable_from<Base*&, Derived*&&>);
+static_assert( std::assignable_from<Base*&, Derived* const>);
+static_assert( std::assignable_from<Base*&, Derived* const&>);
+static_assert( std::assignable_from<Base*&, Derived* const&&>);
+static_assert(!std::assignable_from<Base*&, const Derived*>);
+static_assert(!std::assignable_from<Base*&, const Derived*&>);
+static_assert(!std::assignable_from<Base*&, const Derived*&&>);
+static_assert(!std::assignable_from<Base*&, const Derived* const>);
+static_assert(!std::assignable_from<Base*&, const Derived* const&>);
+static_assert(!std::assignable_from<Base*&, const Derived* const&&>);
+static_assert( std::assignable_from<const Base*&, Derived*>);
+static_assert( std::assignable_from<const Base*&, Derived*&>);
+static_assert( std::assignable_from<const Base*&, Derived*&&>);
+static_assert( std::assignable_from<const Base*&, Derived* const>);
+static_assert( std::assignable_from<const Base*&, Derived* const&>);
+static_assert( std::assignable_from<const Base*&, Derived* const&&>);
+static_assert( std::assignable_from<const Base*&, const Derived*>);
+static_assert( std::assignable_from<const Base*&, const Derived*&>);
+static_assert( std::assignable_from<const Base*&, const Derived*&&>);
+static_assert( std::assignable_from<const Base*&, const Derived* const>);
+static_assert( std::assignable_from<const Base*&, const Derived* const&>);
+static_assert( std::assignable_from<const Base*&, const Derived* const&&>);
+
+struct VoidResultType {
+    void operator=(const VoidResultType&);
+};
+static_assert(std::is_assignable_v<VoidResultType&, const VoidResultType&>);
+static_assert(!std::assignable_from<VoidResultType&, const VoidResultType&>);
+
+struct ValueResultType {
+    ValueResultType operator=(const ValueResultType&);
+};
+static_assert(std::is_assignable_v<ValueResultType&, const ValueResultType&>);
+static_assert(!std::assignable_from<ValueResultType&, const ValueResultType&>);
+
+struct Locale {
+    const Locale& operator=(const Locale&);
+};
+static_assert(std::is_assignable_v<Locale&, const Locale&>);
+static_assert(!std::assignable_from<Locale&, const Locale&>);
+
+struct Tuple {
+    Tuple& operator=(const Tuple&);
+    const Tuple& operator=(const Tuple&) const;
+};
+static_assert(!std::assignable_from<Tuple, const Tuple&>);
+static_assert( std::assignable_from<Tuple&, const Tuple&>);
+static_assert(!std::assignable_from<Tuple&&, const Tuple&>);
+static_assert(!std::assignable_from<const Tuple, const Tuple&>);
+static_assert( std::assignable_from<const Tuple&, const Tuple&>);
+static_assert(!std::assignable_from<const Tuple&&, const Tuple&>);
+
+// Finally, check a few simple cases.
+static_assert( std::assignable_from<int&, int>);
+static_assert( std::assignable_from<int&, int&>);
+static_assert( std::assignable_from<int&, int&&>);
+static_assert(!std::assignable_from<const int&, int>);
+static_assert(!std::assignable_from<const int&, int&>);
+static_assert(!std::assignable_from<const int&, int&&>);
+static_assert( std::assignable_from<volatile int&, int>);
+static_assert( std::assignable_from<volatile int&, int&>);
+static_assert( std::assignable_from<volatile int&, int&&>);
+static_assert(!std::assignable_from<int(&)[10], int>);
+static_assert(!std::assignable_from<int(&)[10], int(&)[10]>);
+static_assert( std::assignable_from<MoveOnly&, MoveOnly>);
+static_assert(!std::assignable_from<MoveOnly&, MoveOnly&>);
+static_assert( std::assignable_from<MoveOnly&, MoveOnly&&>);
+static_assert(!std::assignable_from<void, int>);
+static_assert(!std::assignable_from<void, void>);
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.common/common_with.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.common/common_with.compile.pass.cpp
new file mode 100644
index 0000000..c14634e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.common/common_with.compile.pass.cpp
@@ -0,0 +1,994 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class From, class To>
+// concept common_with;
+
+#include <concepts>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+constexpr bool CheckCommonWith() noexcept {
+  constexpr bool result = std::common_with<T, U>;
+  static_assert(std::common_with<T, U&> == result);
+  static_assert(std::common_with<T, const U&> == result);
+  static_assert(std::common_with<T, volatile U&> == result);
+  static_assert(std::common_with<T, const volatile U&> == result);
+  static_assert(std::common_with<T, U&&> == result);
+  static_assert(std::common_with<T, const U&&> == result);
+  static_assert(std::common_with<T, volatile U&&> == result);
+  static_assert(std::common_with<T, const volatile U&&> == result);
+  static_assert(std::common_with<T&, U&&> == result);
+  static_assert(std::common_with<T&, const U&&> == result);
+  static_assert(std::common_with<T&, volatile U&&> == result);
+  static_assert(std::common_with<T&, const volatile U&&> == result);
+  static_assert(std::common_with<const T&, U&&> == result);
+  static_assert(std::common_with<const T&, const U&&> == result);
+  static_assert(std::common_with<const T&, volatile U&&> == result);
+  static_assert(std::common_with<const T&, const volatile U&&> == result);
+  static_assert(std::common_with<volatile T&, U&&> == result);
+  static_assert(std::common_with<volatile T&, const U&&> == result);
+  static_assert(std::common_with<volatile T&, volatile U&&> == result);
+  static_assert(std::common_with<volatile T&, const volatile U&&> == result);
+  static_assert(std::common_with<const volatile T&, U&&> == result);
+  static_assert(std::common_with<const volatile T&, const U&&> == result);
+  static_assert(std::common_with<const volatile T&, volatile U&&> == result);
+  static_assert(std::common_with<const volatile T&, const volatile U&&> ==
+                result);
+  return result;
+}
+
+template <class T, class U>
+constexpr bool HasValidCommonType() noexcept {
+  return requires { typename std::common_type_t<T, U>; }
+  &&std::same_as<std::common_type_t<T, U>, std::common_type_t<U, T> >;
+}
+
+namespace BuiltinTypes {
+// fundamental types
+static_assert(std::common_with<void, void>);
+static_assert(CheckCommonWith<int, int>());
+static_assert(CheckCommonWith<int, long>());
+static_assert(CheckCommonWith<int, unsigned char>());
+#ifndef TEST_HAS_NO_INT128
+static_assert(CheckCommonWith<int, __int128_t>());
+#endif
+static_assert(CheckCommonWith<int, double>());
+
+// arrays
+static_assert(CheckCommonWith<int[5], int[5]>());
+
+// pointers
+static_assert(CheckCommonWith<int*, int*>());
+static_assert(CheckCommonWith<int*, const int*>());
+static_assert(CheckCommonWith<int*, volatile int*>());
+static_assert(CheckCommonWith<int*, const volatile int*>());
+static_assert(CheckCommonWith<const int*, const int*>());
+static_assert(CheckCommonWith<const int*, volatile int*>());
+static_assert(CheckCommonWith<const int*, const volatile int*>());
+static_assert(CheckCommonWith<volatile int*, const int*>());
+static_assert(CheckCommonWith<volatile int*, volatile int*>());
+static_assert(CheckCommonWith<volatile int*, const volatile int*>());
+static_assert(CheckCommonWith<const volatile int*, const int*>());
+static_assert(CheckCommonWith<const volatile int*, volatile int*>());
+static_assert(CheckCommonWith<const volatile int*, const volatile int*>());
+
+static_assert(CheckCommonWith<int (*)(), int (*)()>());
+static_assert(CheckCommonWith<int (*)(), int (*)() noexcept>());
+static_assert(CheckCommonWith<int (&)(), int (&)()>());
+static_assert(CheckCommonWith<int (&)(), int (&)() noexcept>());
+static_assert(CheckCommonWith<int (&)(), int (*)()>());
+static_assert(CheckCommonWith<int (&)(), int (*)() noexcept>());
+
+struct S {};
+static_assert(CheckCommonWith<int S::*, int S::*>());
+static_assert(CheckCommonWith<int S::*, const int S::*>());
+static_assert(CheckCommonWith<int (S::*)(), int (S::*)()>());
+static_assert(CheckCommonWith<int (S::*)(), int (S::*)() noexcept>());
+static_assert(CheckCommonWith<int (S::*)() const, int (S::*)() const>());
+static_assert(
+    CheckCommonWith<int (S::*)() const, int (S::*)() const noexcept>());
+static_assert(CheckCommonWith<int (S::*)() volatile, int (S::*)() volatile>());
+static_assert(
+    CheckCommonWith<int (S::*)() volatile, int (S::*)() volatile noexcept>());
+static_assert(CheckCommonWith<int (S::*)() const volatile,
+                              int (S::*)() const volatile>());
+static_assert(CheckCommonWith<int (S::*)() const volatile,
+                              int (S::*)() const volatile noexcept>());
+
+// nonsense
+static_assert(!CheckCommonWith<double, float*>());
+static_assert(!CheckCommonWith<int, int[5]>());
+static_assert(!CheckCommonWith<int*, long*>());
+static_assert(!CheckCommonWith<int*, unsigned int*>());
+static_assert(!CheckCommonWith<int (*)(), int (*)(int)>());
+static_assert(!CheckCommonWith<int S::*, float S::*>());
+static_assert(!CheckCommonWith<int (S::*)(), int (S::*)() const>());
+static_assert(!CheckCommonWith<int (S::*)(), int (S::*)() volatile>());
+static_assert(!CheckCommonWith<int (S::*)(), int (S::*)() const volatile>());
+static_assert(!CheckCommonWith<int (S::*)() const, int (S::*)() volatile>());
+static_assert(
+    !CheckCommonWith<int (S::*)() const, int (S::*)() const volatile>());
+static_assert(
+    !CheckCommonWith<int (S::*)() volatile, int (S::*)() const volatile>());
+} // namespace BuiltinTypes
+
+namespace NoDefaultCommonType {
+class T {};
+
+static_assert(!CheckCommonWith<T, int>());
+static_assert(!CheckCommonWith<int, T>());
+static_assert(!CheckCommonWith<T, int[10]>());
+static_assert(!CheckCommonWith<T[10], int>());
+static_assert(!CheckCommonWith<T*, int*>());
+static_assert(!CheckCommonWith<T*, const int*>());
+static_assert(!CheckCommonWith<T*, volatile int*>());
+static_assert(!CheckCommonWith<T*, const volatile int*>());
+static_assert(!CheckCommonWith<const T*, int*>());
+static_assert(!CheckCommonWith<volatile T*, int*>());
+static_assert(!CheckCommonWith<const volatile T*, int*>());
+static_assert(!CheckCommonWith<const T*, const int*>());
+static_assert(!CheckCommonWith<const T*, volatile int*>());
+static_assert(!CheckCommonWith<const T*, const volatile int*>());
+static_assert(!CheckCommonWith<const T*, const int*>());
+static_assert(!CheckCommonWith<volatile T*, const int*>());
+static_assert(!CheckCommonWith<const volatile T*, const int*>());
+static_assert(!CheckCommonWith<volatile T*, const int*>());
+static_assert(!CheckCommonWith<volatile T*, volatile int*>());
+static_assert(!CheckCommonWith<volatile T*, const volatile int*>());
+static_assert(!CheckCommonWith<const T*, volatile int*>());
+static_assert(!CheckCommonWith<volatile T*, volatile int*>());
+static_assert(!CheckCommonWith<const volatile T*, volatile int*>());
+static_assert(!CheckCommonWith<const volatile T*, const int*>());
+static_assert(!CheckCommonWith<const volatile T*, volatile int*>());
+static_assert(!CheckCommonWith<const volatile T*, const volatile int*>());
+static_assert(!CheckCommonWith<const T*, const volatile int*>());
+static_assert(!CheckCommonWith<volatile T*, const volatile int*>());
+static_assert(!CheckCommonWith<const volatile T*, const volatile int*>());
+static_assert(!CheckCommonWith<T&, int&>());
+static_assert(!CheckCommonWith<T&, const int&>());
+static_assert(!CheckCommonWith<T&, volatile int&>());
+static_assert(!CheckCommonWith<T&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&, int&>());
+static_assert(!CheckCommonWith<volatile T&, int&>());
+static_assert(!CheckCommonWith<const volatile T&, int&>());
+static_assert(!CheckCommonWith<const T&, const int&>());
+static_assert(!CheckCommonWith<const T&, volatile int&>());
+static_assert(!CheckCommonWith<const T&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&, const int&>());
+static_assert(!CheckCommonWith<volatile T&, const int&>());
+static_assert(!CheckCommonWith<const volatile T&, const int&>());
+static_assert(!CheckCommonWith<volatile T&, const int&>());
+static_assert(!CheckCommonWith<volatile T&, volatile int&>());
+static_assert(!CheckCommonWith<volatile T&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&, volatile int&>());
+static_assert(!CheckCommonWith<volatile T&, volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&, volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&, const int&>());
+static_assert(!CheckCommonWith<const volatile T&, volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&, const volatile int&>());
+static_assert(!CheckCommonWith<volatile T&, const volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&, const volatile int&>());
+static_assert(!CheckCommonWith<T&, int&&>());
+static_assert(!CheckCommonWith<T&, const int&&>());
+static_assert(!CheckCommonWith<T&, volatile int&&>());
+static_assert(!CheckCommonWith<T&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&, int&&>());
+static_assert(!CheckCommonWith<volatile T&, int&&>());
+static_assert(!CheckCommonWith<const volatile T&, int&&>());
+static_assert(!CheckCommonWith<const T&, const int&&>());
+static_assert(!CheckCommonWith<const T&, volatile int&&>());
+static_assert(!CheckCommonWith<const T&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&, const int&&>());
+static_assert(!CheckCommonWith<volatile T&, const int&&>());
+static_assert(!CheckCommonWith<const volatile T&, const int&&>());
+static_assert(!CheckCommonWith<volatile T&, const int&&>());
+static_assert(!CheckCommonWith<volatile T&, volatile int&&>());
+static_assert(!CheckCommonWith<volatile T&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&, volatile int&&>());
+static_assert(!CheckCommonWith<volatile T&, volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&, volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&, const int&&>());
+static_assert(!CheckCommonWith<const volatile T&, volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&, const volatile int&&>());
+static_assert(!CheckCommonWith<volatile T&, const volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&, const volatile int&&>());
+static_assert(!CheckCommonWith<T&&, int&>());
+static_assert(!CheckCommonWith<T&&, const int&>());
+static_assert(!CheckCommonWith<T&&, volatile int&>());
+static_assert(!CheckCommonWith<T&&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&&, int&>());
+static_assert(!CheckCommonWith<volatile T&&, int&>());
+static_assert(!CheckCommonWith<const volatile T&&, int&>());
+static_assert(!CheckCommonWith<const T&&, const int&>());
+static_assert(!CheckCommonWith<const T&&, volatile int&>());
+static_assert(!CheckCommonWith<const T&&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&&, const int&>());
+static_assert(!CheckCommonWith<volatile T&&, const int&>());
+static_assert(!CheckCommonWith<const volatile T&&, const int&>());
+static_assert(!CheckCommonWith<volatile T&&, const int&>());
+static_assert(!CheckCommonWith<volatile T&&, volatile int&>());
+static_assert(!CheckCommonWith<volatile T&&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&&, volatile int&>());
+static_assert(!CheckCommonWith<volatile T&&, volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&&, volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&&, const int&>());
+static_assert(!CheckCommonWith<const volatile T&&, volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&&, const volatile int&>());
+static_assert(!CheckCommonWith<const T&&, const volatile int&>());
+static_assert(!CheckCommonWith<volatile T&&, const volatile int&>());
+static_assert(!CheckCommonWith<const volatile T&&, const volatile int&>());
+static_assert(!CheckCommonWith<T&&, int&&>());
+static_assert(!CheckCommonWith<T&&, const int&&>());
+static_assert(!CheckCommonWith<T&&, volatile int&&>());
+static_assert(!CheckCommonWith<T&&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&&, int&&>());
+static_assert(!CheckCommonWith<volatile T&&, int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, int&&>());
+static_assert(!CheckCommonWith<const T&&, const int&&>());
+static_assert(!CheckCommonWith<const T&&, volatile int&&>());
+static_assert(!CheckCommonWith<const T&&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&&, const int&&>());
+static_assert(!CheckCommonWith<volatile T&&, const int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, const int&&>());
+static_assert(!CheckCommonWith<volatile T&&, const int&&>());
+static_assert(!CheckCommonWith<volatile T&&, volatile int&&>());
+static_assert(!CheckCommonWith<volatile T&&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&&, volatile int&&>());
+static_assert(!CheckCommonWith<volatile T&&, volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, const int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, const volatile int&&>());
+static_assert(!CheckCommonWith<const T&&, const volatile int&&>());
+static_assert(!CheckCommonWith<volatile T&&, const volatile int&&>());
+static_assert(!CheckCommonWith<const volatile T&&, const volatile int&&>());
+} // namespace NoDefaultCommonType
+
+struct BadBasicCommonType {
+  // This test is ill-formed, NDR. If it ever blows up in our faces: that's a good thing.
+  // In the meantime, the test should be included. If compiler support is added, then an include guard
+  // should be placed so the test doesn't get deleted.
+};
+
+namespace std {
+template <>
+struct common_type<BadBasicCommonType, int> {
+  using type = BadBasicCommonType;
+};
+
+template <>
+struct common_type<int, BadBasicCommonType> {
+  using type = int;
+};
+} // namespace std
+static_assert(requires {
+  typename std::common_type_t<BadBasicCommonType, int>;
+});
+static_assert(requires {
+  typename std::common_type_t<int, BadBasicCommonType>;
+});
+static_assert(!std::same_as<std::common_type_t<BadBasicCommonType, int>,
+                            std::common_type_t<int, BadBasicCommonType> >);
+static_assert(!CheckCommonWith<BadBasicCommonType, int>());
+
+struct DullCommonType {};
+static_assert(!std::convertible_to<DullCommonType, int>);
+
+struct T1 {};
+static_assert(!std::convertible_to<DullCommonType, T1>);
+
+namespace std {
+template <>
+struct common_type<T1, int> {
+  using type = DullCommonType;
+};
+
+template <>
+struct common_type<int, T1> {
+  using type = DullCommonType;
+};
+} // namespace std
+static_assert(HasValidCommonType<T1, int>());
+static_assert(!CheckCommonWith<T1, int>());
+
+struct CommonTypeImplicitlyConstructibleFromInt {
+  explicit(false) CommonTypeImplicitlyConstructibleFromInt(int);
+};
+static_assert(requires {
+  static_cast<CommonTypeImplicitlyConstructibleFromInt>(0);
+});
+
+struct T2 {};
+static_assert(
+    !std::convertible_to<CommonTypeImplicitlyConstructibleFromInt, T2>);
+
+namespace std {
+template <>
+struct common_type<T2, int> {
+  using type = CommonTypeImplicitlyConstructibleFromInt;
+};
+
+template <>
+struct common_type<int, T2> {
+  using type = CommonTypeImplicitlyConstructibleFromInt;
+};
+} // namespace std
+static_assert(HasValidCommonType<T2, int>());
+static_assert(!CheckCommonWith<T2, int>());
+
+struct CommonTypeExplicitlyConstructibleFromInt {
+  explicit CommonTypeExplicitlyConstructibleFromInt(int);
+};
+static_assert(requires {
+  static_cast<CommonTypeExplicitlyConstructibleFromInt>(0);
+});
+
+struct T3 {};
+static_assert(
+    !std::convertible_to<CommonTypeExplicitlyConstructibleFromInt, T2>);
+
+namespace std {
+template <>
+struct common_type<T3, int> {
+  using type = CommonTypeExplicitlyConstructibleFromInt;
+};
+
+template <>
+struct common_type<int, T3> {
+  using type = CommonTypeExplicitlyConstructibleFromInt;
+};
+} // namespace std
+static_assert(HasValidCommonType<T3, int>());
+static_assert(!CheckCommonWith<T3, int>());
+
+struct T4 {};
+struct CommonTypeImplicitlyConstructibleFromT4 {
+  explicit(false) CommonTypeImplicitlyConstructibleFromT4(T4);
+};
+static_assert(requires(T4 t4) {
+  static_cast<CommonTypeImplicitlyConstructibleFromT4>(t4);
+});
+
+namespace std {
+template <>
+struct common_type<T4, int> {
+  using type = CommonTypeImplicitlyConstructibleFromT4;
+};
+
+template <>
+struct common_type<int, T4> {
+  using type = CommonTypeImplicitlyConstructibleFromT4;
+};
+} // namespace std
+static_assert(HasValidCommonType<T4, int>());
+static_assert(!CheckCommonWith<T4, int>());
+
+struct T5 {};
+struct CommonTypeExplicitlyConstructibleFromT5 {
+  explicit CommonTypeExplicitlyConstructibleFromT5(T5);
+};
+static_assert(requires(T5 t5) {
+  static_cast<CommonTypeExplicitlyConstructibleFromT5>(t5);
+});
+
+namespace std {
+template <>
+struct common_type<T5, int> {
+  using type = CommonTypeExplicitlyConstructibleFromT5;
+};
+
+template <>
+struct common_type<int, T5> {
+  using type = CommonTypeExplicitlyConstructibleFromT5;
+};
+} // namespace std
+static_assert(HasValidCommonType<T5, int>());
+static_assert(!CheckCommonWith<T5, int>());
+
+struct T6 {};
+struct CommonTypeNoCommonReference {
+  CommonTypeNoCommonReference(T6);
+  CommonTypeNoCommonReference(int);
+};
+
+namespace std {
+template <>
+struct common_type<T6, int> {
+  using type = CommonTypeNoCommonReference;
+};
+
+template <>
+struct common_type<int, T6> {
+  using type = CommonTypeNoCommonReference;
+};
+
+template <>
+struct common_type<T6&, int&> {};
+
+template <>
+struct common_type<int&, T6&> {};
+
+template <>
+struct common_type<T6&, const int&> {};
+
+template <>
+struct common_type<int&, const T6&> {};
+
+template <>
+struct common_type<T6&, volatile int&> {};
+
+template <>
+struct common_type<int&, volatile T6&> {};
+
+template <>
+struct common_type<T6&, const volatile int&> {};
+
+template <>
+struct common_type<int&, const volatile T6&> {};
+
+template <>
+struct common_type<const T6&, int&> {};
+
+template <>
+struct common_type<const int&, T6&> {};
+
+template <>
+struct common_type<const T6&, const int&> {};
+
+template <>
+struct common_type<const int&, const T6&> {};
+
+template <>
+struct common_type<const T6&, volatile int&> {};
+
+template <>
+struct common_type<const int&, volatile T6&> {};
+
+template <>
+struct common_type<const T6&, const volatile int&> {};
+
+template <>
+struct common_type<const int&, const volatile T6&> {};
+
+template <>
+struct common_type<volatile T6&, int&> {};
+
+template <>
+struct common_type<volatile int&, T6&> {};
+
+template <>
+struct common_type<volatile T6&, const int&> {};
+
+template <>
+struct common_type<volatile int&, const T6&> {};
+
+template <>
+struct common_type<volatile T6&, volatile int&> {};
+
+template <>
+struct common_type<volatile int&, volatile T6&> {};
+
+template <>
+struct common_type<volatile T6&, const volatile int&> {};
+
+template <>
+struct common_type<volatile int&, const volatile T6&> {};
+
+template <>
+struct common_type<const volatile T6&, int&> {};
+
+template <>
+struct common_type<const volatile int&, T6&> {};
+
+template <>
+struct common_type<const volatile T6&, const int&> {};
+
+template <>
+struct common_type<const volatile int&, const T6&> {};
+
+template <>
+struct common_type<const volatile T6&, volatile int&> {};
+
+template <>
+struct common_type<const volatile int&, volatile T6&> {};
+
+template <>
+struct common_type<const volatile T6&, const volatile int&> {};
+
+template <>
+struct common_type<const volatile int&, const volatile T6&> {};
+} // namespace std
+
+template <typename T, typename U>
+constexpr bool HasCommonReference() noexcept {
+  return requires { typename std::common_reference_t<T, U>; };
+}
+
+static_assert(HasValidCommonType<T6, int>());
+static_assert(!HasCommonReference<const T6&, const int&>());
+static_assert(!CheckCommonWith<T6, int>());
+
+struct T7 {};
+struct CommonTypeNoMetaCommonReference {
+  CommonTypeNoMetaCommonReference(T7);
+  CommonTypeNoMetaCommonReference(int);
+};
+
+namespace std {
+template <>
+struct common_type<T7, int> {
+  using type = CommonTypeNoMetaCommonReference;
+};
+
+template <>
+struct common_type<int, T7> {
+  using type = CommonTypeNoMetaCommonReference;
+};
+
+template <>
+struct common_type<T7&, int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<int&, T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<T7&, const int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<int&, const T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<T7&, volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<int&, volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<T7&, const volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<int&, const volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const T7&, int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const int&, T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const T7&, const int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const int&, const T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const T7&, volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const int&, volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const T7&, const volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const int&, const volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile T7&, int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile int&, T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile T7&, const int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile int&, const T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile T7&, volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile int&, volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile T7&, const volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<volatile int&, const volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile T7&, int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile int&, T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile T7&, const int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile int&, const T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile T7&, volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile int&, volatile T7&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile T7&, const volatile int&> {
+  using type = void;
+};
+
+template <>
+struct common_type<const volatile int&, const volatile T7&> {
+  using type = void;
+};
+} // namespace std
+static_assert(HasValidCommonType<T7, int>());
+static_assert(HasValidCommonType<const T7&, const int&>());
+static_assert(HasCommonReference<const T7&, const int&>());
+static_assert(
+    !HasCommonReference<std::common_type_t<T7, int>&,
+                        std::common_reference_t<const T7&, const int&> >());
+static_assert(!CheckCommonWith<T7, int>());
+
+struct CommonWithInt {
+  operator int() const volatile;
+};
+
+namespace std {
+template <>
+struct common_type<CommonWithInt, int> {
+  using type = int;
+};
+
+template <>
+struct common_type<int, CommonWithInt> : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<CommonWithInt&, int&> : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<int&, CommonWithInt&> : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<CommonWithInt&, const int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<int&, const CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<CommonWithInt&, volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<int&, volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<CommonWithInt&, const volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<int&, const volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const CommonWithInt&, int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const int&, CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const CommonWithInt&, const int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const int&, const CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const CommonWithInt&, volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const int&, volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const CommonWithInt&, const volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const int&, const volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile CommonWithInt&, int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile int&, CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile CommonWithInt&, const int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile int&, const CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile CommonWithInt&, volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile int&, volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile CommonWithInt&, const volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<volatile int&, const volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile CommonWithInt&, int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile int&, CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile CommonWithInt&, const int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile int&, const CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile CommonWithInt&, volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile int&, volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile CommonWithInt&, const volatile int&>
+    : common_type<CommonWithInt, int> {};
+
+template <>
+struct common_type<const volatile int&, const volatile CommonWithInt&>
+    : common_type<CommonWithInt, int> {};
+} // namespace std
+static_assert(CheckCommonWith<CommonWithInt, int>());
+
+struct CommonWithIntButRefLong {
+  operator int() const volatile;
+};
+
+namespace std {
+template <>
+struct common_type<CommonWithIntButRefLong, int> {
+  using type = int;
+};
+
+template <>
+struct common_type<int, CommonWithIntButRefLong>
+    : common_type<CommonWithIntButRefLong, int> {};
+
+template <>
+struct common_type<CommonWithIntButRefLong&, int&> {
+  using type = long;
+};
+
+template <>
+struct common_type<int&, CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<CommonWithIntButRefLong&, const int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<int&, const CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<CommonWithIntButRefLong&, volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<int&, volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<CommonWithIntButRefLong&, const volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<int&, const volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const CommonWithIntButRefLong&, int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const int&, CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const CommonWithIntButRefLong&, const int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const int&, const CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const CommonWithIntButRefLong&, volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const int&, volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const CommonWithIntButRefLong&, const volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const int&, const volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile CommonWithIntButRefLong&, int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile int&, CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile CommonWithIntButRefLong&, const int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile int&, const CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile CommonWithIntButRefLong&, volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile int&, volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile CommonWithIntButRefLong&, const volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<volatile int&, const volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile CommonWithIntButRefLong&, int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile int&, CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile CommonWithIntButRefLong&, const int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile int&, const CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile CommonWithIntButRefLong&, volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile int&, volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile CommonWithIntButRefLong&, const volatile int&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+
+template <>
+struct common_type<const volatile int&, const volatile CommonWithIntButRefLong&>
+    : common_type<CommonWithIntButRefLong&, int&> {};
+} // namespace std
+static_assert(CheckCommonWith<CommonWithIntButRefLong, int>());
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.commonref/common_reference.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.commonref/common_reference.compile.pass.cpp
new file mode 100644
index 0000000..e7ab520
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.commonref/common_reference.compile.pass.cpp
@@ -0,0 +1,347 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class From, class To>
+// concept common_reference_with;
+
+#include <concepts>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+constexpr bool CheckCommonReferenceWith() noexcept {
+  static_assert(std::common_reference_with<T, U&>);
+  static_assert(std::common_reference_with<T, const U&>);
+  static_assert(std::common_reference_with<T, volatile U&>);
+  static_assert(std::common_reference_with<T, const volatile U&>);
+  static_assert(std::common_reference_with<T, U&&>);
+  static_assert(std::common_reference_with<T, const U&&>);
+  static_assert(std::common_reference_with<T, volatile U&&>);
+  static_assert(std::common_reference_with<T, const volatile U&&>);
+  static_assert(std::common_reference_with<T&, U&&>);
+  static_assert(std::common_reference_with<T&, const U&&>);
+  static_assert(std::common_reference_with<T&, volatile U&&>);
+  static_assert(std::common_reference_with<T&, const volatile U&&>);
+  static_assert(std::common_reference_with<const T&, U&&>);
+  static_assert(std::common_reference_with<const T&, const U&&>);
+  static_assert(std::common_reference_with<const T&, volatile U&&>);
+  static_assert(std::common_reference_with<const T&, const volatile U&&>);
+  static_assert(std::common_reference_with<volatile T&, U&&>);
+  static_assert(std::common_reference_with<volatile T&, const U&&>);
+  static_assert(std::common_reference_with<volatile T&, volatile U&&>);
+  static_assert(std::common_reference_with<volatile T&, const volatile U&&>);
+  static_assert(std::common_reference_with<const volatile T&, U&&>);
+  static_assert(std::common_reference_with<const volatile T&, const U&&>);
+  static_assert(std::common_reference_with<const volatile T&, volatile U&&>);
+  static_assert(
+      std::common_reference_with<const volatile T&, const volatile U&&>);
+
+  return std::common_reference_with<T, U>;
+}
+
+namespace BuiltinTypes {
+// fundamental types
+static_assert(std::common_reference_with<void, void>);
+static_assert(CheckCommonReferenceWith<int, int>());
+static_assert(CheckCommonReferenceWith<int, long>());
+static_assert(CheckCommonReferenceWith<int, unsigned char>());
+#ifndef TEST_HAS_NO_INT128
+static_assert(CheckCommonReferenceWith<int, __int128_t>());
+#endif
+static_assert(CheckCommonReferenceWith<int, double>());
+
+// arrays
+static_assert(CheckCommonReferenceWith<int[5], int[5]>());
+
+// pointers (common with void*)
+static_assert(CheckCommonReferenceWith<int*, void*>());
+static_assert(CheckCommonReferenceWith<int*, const void*>());
+static_assert(CheckCommonReferenceWith<int*, volatile void*>());
+static_assert(CheckCommonReferenceWith<int*, const volatile void*>());
+static_assert(CheckCommonReferenceWith<const int*, void*>());
+static_assert(CheckCommonReferenceWith<const int*, const void*>());
+static_assert(CheckCommonReferenceWith<const int*, volatile void*>());
+static_assert(CheckCommonReferenceWith<const int*, const volatile void*>());
+static_assert(CheckCommonReferenceWith<volatile int*, void*>());
+static_assert(CheckCommonReferenceWith<volatile int*, const void*>());
+static_assert(CheckCommonReferenceWith<volatile int*, volatile void*>());
+static_assert(CheckCommonReferenceWith<volatile int*, const volatile void*>());
+static_assert(CheckCommonReferenceWith<const volatile int*, void*>());
+static_assert(CheckCommonReferenceWith<const volatile int*, const void*>());
+static_assert(CheckCommonReferenceWith<const volatile int*, volatile void*>());
+static_assert(
+    CheckCommonReferenceWith<const volatile int*, const volatile void*>());
+
+static_assert(CheckCommonReferenceWith<int (*)(), int (*)()>());
+static_assert(CheckCommonReferenceWith<int (*)(), int (*)() noexcept>());
+struct S {};
+static_assert(CheckCommonReferenceWith<int S::*, int S::*>());
+static_assert(CheckCommonReferenceWith<int S::*, const int S::*>());
+static_assert(CheckCommonReferenceWith<int (S::*)(), int (S::*)()>());
+static_assert(CheckCommonReferenceWith<int (S::*)(), int (S::*)() noexcept>());
+static_assert(
+    CheckCommonReferenceWith<int (S::*)() const, int (S::*)() const>());
+static_assert(CheckCommonReferenceWith<int (S::*)() const,
+                                       int (S::*)() const noexcept>());
+static_assert(
+    CheckCommonReferenceWith<int (S::*)() volatile, int (S::*)() volatile>());
+static_assert(CheckCommonReferenceWith<int (S::*)() volatile,
+                                       int (S::*)() volatile noexcept>());
+static_assert(CheckCommonReferenceWith<int (S::*)() const volatile,
+                                       int (S::*)() const volatile>());
+static_assert(CheckCommonReferenceWith<int (S::*)() const volatile,
+                                       int (S::*)() const volatile noexcept>());
+
+// nonsense
+static_assert(!std::common_reference_with<double, float*>);
+static_assert(!std::common_reference_with<int, int[5]>);
+static_assert(!std::common_reference_with<int*, long*>);
+static_assert(!std::common_reference_with<int*, unsigned int*>);
+static_assert(!std::common_reference_with<int (*)(), int (*)(int)>);
+static_assert(!std::common_reference_with<int S::*, float S::*>);
+static_assert(!std::common_reference_with<int (S::*)(), int (S::*)() const>);
+static_assert(!std::common_reference_with<int (S::*)(), int (S::*)() volatile>);
+static_assert(
+    !std::common_reference_with<int (S::*)(), int (S::*)() const volatile>);
+static_assert(
+    !std::common_reference_with<int (S::*)() const, int (S::*)() volatile>);
+static_assert(!std::common_reference_with<int (S::*)() const,
+                                          int (S::*)() const volatile>);
+static_assert(!std::common_reference_with<int (S::*)() volatile,
+                                          int (S::*)() const volatile>);
+} // namespace BuiltinTypes
+
+namespace NoDefaultCommonReference {
+class T {};
+
+static_assert(!std::common_reference_with<T, int>);
+static_assert(!std::common_reference_with<int, T>);
+static_assert(!std::common_reference_with<T, int[10]>);
+static_assert(!std::common_reference_with<T[10], int>);
+static_assert(!std::common_reference_with<T*, int*>);
+static_assert(!std::common_reference_with<T*, const int*>);
+static_assert(!std::common_reference_with<T*, volatile int*>);
+static_assert(!std::common_reference_with<T*, const volatile int*>);
+static_assert(!std::common_reference_with<const T*, int*>);
+static_assert(!std::common_reference_with<volatile T*, int*>);
+static_assert(!std::common_reference_with<const volatile T*, int*>);
+static_assert(!std::common_reference_with<const T*, const int*>);
+static_assert(!std::common_reference_with<const T*, volatile int*>);
+static_assert(!std::common_reference_with<const T*, const volatile int*>);
+static_assert(!std::common_reference_with<const T*, const int*>);
+static_assert(!std::common_reference_with<volatile T*, const int*>);
+static_assert(!std::common_reference_with<const volatile T*, const int*>);
+static_assert(!std::common_reference_with<volatile T*, const int*>);
+static_assert(!std::common_reference_with<volatile T*, volatile int*>);
+static_assert(!std::common_reference_with<volatile T*, const volatile int*>);
+static_assert(!std::common_reference_with<const T*, volatile int*>);
+static_assert(!std::common_reference_with<volatile T*, volatile int*>);
+static_assert(!std::common_reference_with<const volatile T*, volatile int*>);
+static_assert(!std::common_reference_with<const volatile T*, const int*>);
+static_assert(!std::common_reference_with<const volatile T*, volatile int*>);
+static_assert(
+    !std::common_reference_with<const volatile T*, const volatile int*>);
+static_assert(!std::common_reference_with<const T*, const volatile int*>);
+static_assert(!std::common_reference_with<volatile T*, const volatile int*>);
+static_assert(
+    !std::common_reference_with<const volatile T*, const volatile int*>);
+static_assert(!std::common_reference_with<T&, int&>);
+static_assert(!std::common_reference_with<T&, const int&>);
+static_assert(!std::common_reference_with<T&, volatile int&>);
+static_assert(!std::common_reference_with<T&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&, int&>);
+static_assert(!std::common_reference_with<volatile T&, int&>);
+static_assert(!std::common_reference_with<const volatile T&, int&>);
+static_assert(!std::common_reference_with<const T&, const int&>);
+static_assert(!std::common_reference_with<const T&, volatile int&>);
+static_assert(!std::common_reference_with<const T&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&, const int&>);
+static_assert(!std::common_reference_with<volatile T&, const int&>);
+static_assert(!std::common_reference_with<const volatile T&, const int&>);
+static_assert(!std::common_reference_with<volatile T&, const int&>);
+static_assert(!std::common_reference_with<volatile T&, volatile int&>);
+static_assert(!std::common_reference_with<volatile T&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&, volatile int&>);
+static_assert(!std::common_reference_with<volatile T&, volatile int&>);
+static_assert(!std::common_reference_with<const volatile T&, volatile int&>);
+static_assert(!std::common_reference_with<const volatile T&, const int&>);
+static_assert(!std::common_reference_with<const volatile T&, volatile int&>);
+static_assert(
+    !std::common_reference_with<const volatile T&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&, const volatile int&>);
+static_assert(!std::common_reference_with<volatile T&, const volatile int&>);
+static_assert(
+    !std::common_reference_with<const volatile T&, const volatile int&>);
+static_assert(!std::common_reference_with<T&, int&&>);
+static_assert(!std::common_reference_with<T&, const int&&>);
+static_assert(!std::common_reference_with<T&, volatile int&&>);
+static_assert(!std::common_reference_with<T&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&, int&&>);
+static_assert(!std::common_reference_with<volatile T&, int&&>);
+static_assert(!std::common_reference_with<const volatile T&, int&&>);
+static_assert(!std::common_reference_with<const T&, const int&&>);
+static_assert(!std::common_reference_with<const T&, volatile int&&>);
+static_assert(!std::common_reference_with<const T&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&, const int&&>);
+static_assert(!std::common_reference_with<volatile T&, const int&&>);
+static_assert(!std::common_reference_with<const volatile T&, const int&&>);
+static_assert(!std::common_reference_with<volatile T&, const int&&>);
+static_assert(!std::common_reference_with<volatile T&, volatile int&&>);
+static_assert(!std::common_reference_with<volatile T&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&, volatile int&&>);
+static_assert(!std::common_reference_with<volatile T&, volatile int&&>);
+static_assert(!std::common_reference_with<const volatile T&, volatile int&&>);
+static_assert(!std::common_reference_with<const volatile T&, const int&&>);
+static_assert(!std::common_reference_with<const volatile T&, volatile int&&>);
+static_assert(
+    !std::common_reference_with<const volatile T&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&, const volatile int&&>);
+static_assert(!std::common_reference_with<volatile T&, const volatile int&&>);
+static_assert(
+    !std::common_reference_with<const volatile T&, const volatile int&&>);
+static_assert(!std::common_reference_with<T&&, int&>);
+static_assert(!std::common_reference_with<T&&, const int&>);
+static_assert(!std::common_reference_with<T&&, volatile int&>);
+static_assert(!std::common_reference_with<T&&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&&, int&>);
+static_assert(!std::common_reference_with<volatile T&&, int&>);
+static_assert(!std::common_reference_with<const volatile T&&, int&>);
+static_assert(!std::common_reference_with<const T&&, const int&>);
+static_assert(!std::common_reference_with<const T&&, volatile int&>);
+static_assert(!std::common_reference_with<const T&&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&&, const int&>);
+static_assert(!std::common_reference_with<volatile T&&, const int&>);
+static_assert(!std::common_reference_with<const volatile T&&, const int&>);
+static_assert(!std::common_reference_with<volatile T&&, const int&>);
+static_assert(!std::common_reference_with<volatile T&&, volatile int&>);
+static_assert(!std::common_reference_with<volatile T&&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&&, volatile int&>);
+static_assert(!std::common_reference_with<volatile T&&, volatile int&>);
+static_assert(!std::common_reference_with<const volatile T&&, volatile int&>);
+static_assert(!std::common_reference_with<const volatile T&&, const int&>);
+static_assert(!std::common_reference_with<const volatile T&&, volatile int&>);
+static_assert(
+    !std::common_reference_with<const volatile T&&, const volatile int&>);
+static_assert(!std::common_reference_with<const T&&, const volatile int&>);
+static_assert(!std::common_reference_with<volatile T&&, const volatile int&>);
+static_assert(
+    !std::common_reference_with<const volatile T&&, const volatile int&>);
+static_assert(!std::common_reference_with<T&&, int&&>);
+static_assert(!std::common_reference_with<T&&, const int&&>);
+static_assert(!std::common_reference_with<T&&, volatile int&&>);
+static_assert(!std::common_reference_with<T&&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&&, int&&>);
+static_assert(!std::common_reference_with<volatile T&&, int&&>);
+static_assert(!std::common_reference_with<const volatile T&&, int&&>);
+static_assert(!std::common_reference_with<const T&&, const int&&>);
+static_assert(!std::common_reference_with<const T&&, volatile int&&>);
+static_assert(!std::common_reference_with<const T&&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&&, const int&&>);
+static_assert(!std::common_reference_with<volatile T&&, const int&&>);
+static_assert(!std::common_reference_with<const volatile T&&, const int&&>);
+static_assert(!std::common_reference_with<volatile T&&, const int&&>);
+static_assert(!std::common_reference_with<volatile T&&, volatile int&&>);
+static_assert(!std::common_reference_with<volatile T&&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&&, volatile int&&>);
+static_assert(!std::common_reference_with<volatile T&&, volatile int&&>);
+static_assert(!std::common_reference_with<const volatile T&&, volatile int&&>);
+static_assert(!std::common_reference_with<const volatile T&&, const int&&>);
+static_assert(!std::common_reference_with<const volatile T&&, volatile int&&>);
+static_assert(
+    !std::common_reference_with<const volatile T&&, const volatile int&&>);
+static_assert(!std::common_reference_with<const T&&, const volatile int&&>);
+static_assert(!std::common_reference_with<volatile T&&, const volatile int&&>);
+static_assert(
+    !std::common_reference_with<const volatile T&&, const volatile int&&>);
+} // namespace NoDefaultCommonReference
+
+struct BadBasicCommonReference {
+  // This test is ill-formed, NDR. If it ever blows up in our faces: that's a good thing.
+  // In the meantime, the test should be included. If compiler support is added, then an include guard
+  // should be placed so the test doesn't get deleted.
+  operator int() const;
+  operator int&();
+};
+static_assert(std::convertible_to<BadBasicCommonReference, int>);
+static_assert(std::convertible_to<BadBasicCommonReference, int&>);
+
+namespace std {
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<BadBasicCommonReference, int, X, Y> {
+  using type = BadBasicCommonReference&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<int, BadBasicCommonReference, X, Y> {
+  using type = int&;
+};
+} // namespace std
+static_assert(!std::common_reference_with<BadBasicCommonReference, int>);
+
+struct StructNotConvertibleToCommonReference {
+  explicit(false) StructNotConvertibleToCommonReference(int);
+};
+static_assert(std::convertible_to<int, StructNotConvertibleToCommonReference>);
+
+namespace std {
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<StructNotConvertibleToCommonReference, int, X,
+                              Y> {
+  using type = int&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<int, StructNotConvertibleToCommonReference, X,
+                              Y> {
+  using type = int&;
+};
+} // namespace std
+static_assert(
+    !std::common_reference_with<StructNotConvertibleToCommonReference, int>);
+
+struct IntNotConvertibleToCommonReference {
+  operator int&() const;
+};
+
+namespace std {
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<IntNotConvertibleToCommonReference, int, X, Y> {
+  using type = int&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<int, IntNotConvertibleToCommonReference, X, Y> {
+  using type = int&;
+};
+} // namespace std
+static_assert(
+    !std::common_reference_with<StructNotConvertibleToCommonReference, int>);
+
+struct HasCommonReference {
+  explicit(false) HasCommonReference(int);
+  operator int&() const;
+};
+
+namespace std {
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<HasCommonReference, int, X, Y> {
+  using type = int&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct basic_common_reference<int, HasCommonReference, X, Y> {
+  using type = int&;
+};
+} // namespace std
+static_assert(!std::common_reference_with<HasCommonReference, int>);
+static_assert(std::common_reference_with<HasCommonReference, int&>);
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.constructible/constructible_from.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.constructible/constructible_from.compile.pass.cpp
new file mode 100644
index 0000000..22a70bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.constructible/constructible_from.compile.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class... Args>
+// concept constructible_from;
+//    destructible<T> && is_constructible_v<T, Args...>;
+
+#include <array>
+#include <concepts>
+#include <memory>
+#include <string>
+#include <type_traits>
+
+struct Empty {};
+
+struct Defaulted {
+  ~Defaulted() = default;
+};
+struct Deleted {
+  ~Deleted() = delete;
+};
+
+struct Noexcept {
+  ~Noexcept() noexcept;
+};
+struct NoexceptTrue {
+  ~NoexceptTrue() noexcept(true);
+};
+struct NoexceptFalse {
+  ~NoexceptFalse() noexcept(false);
+};
+
+struct Protected {
+protected:
+  ~Protected() = default;
+};
+struct Private {
+private:
+  ~Private() = default;
+};
+
+template <class T>
+struct NoexceptDependant {
+  ~NoexceptDependant() noexcept(std::is_same_v<T, int>);
+};
+
+template <class T, class... Args>
+void test() {
+  static_assert(std::constructible_from<T, Args...> ==
+                (std::destructible<T> && std::is_constructible_v<T, Args...>));
+}
+
+void test() {
+  test<bool>();
+  test<bool, bool>();
+
+  test<char>();
+  test<char, char>();
+  test<char, int>();
+
+  test<int>();
+  test<int, int>();
+  test<int, int, int>();
+
+  test<double, int>();
+  test<double, float>();
+  test<double, long double>();
+
+  test<void>();
+  test<void, bool>();
+  test<void, int>();
+
+  test<void*>();
+  test<void*, std::nullptr_t>();
+
+  test<int*>();
+  test<int*, std::nullptr_t>();
+  test<int[], int, int, int>();
+  test<int[1]>();
+  test<int[1], int>();
+  test<int[1], int, int>();
+
+  test<int (*)(int)>();
+  test<int (*)(int), int>();
+  test<int (*)(int), double>();
+  test<int (*)(int), std::nullptr_t>();
+  test<int (*)(int), int (*)(int)>();
+
+  test<void (Empty::*)(const int&)>();
+  test<void (Empty::*)(const int&), std::nullptr_t>();
+  test<void (Empty::*)(const int&) const>();
+  test<void (Empty::*)(const int&) const, void (Empty::*)(const int&)>();
+  test<void (Empty::*)(const int&) volatile>();
+  test<void (Empty::*)(const int&) volatile,
+       void (Empty::*)(const int&) const volatile>();
+  test<void (Empty::*)(const int&) const volatile>();
+  test<void (Empty::*)(const int&) const volatile, double>();
+  test<void (Empty::*)(const int&)&>();
+  test<void (Empty::*)(const int&)&, void (Empty::*)(const int&) &&>();
+  test<void (Empty::*)(const int&) &&>();
+  test<void (Empty::*)(const int&)&&, void (Empty::*)(const int&)>();
+  test<void (Empty::*)(const int&) throw()>();
+  test<void (Empty::*)(const int&) throw(),
+       void(Empty::*)(const int&) noexcept(true)>();
+  test<void (Empty::*)(const int&) noexcept>();
+  test<void (Empty::*)(const int&) noexcept(true)>();
+  test<void (Empty::*)(const int&) noexcept(true),
+       void (Empty::*)(const int&) noexcept(false)>();
+  test<void (Empty::*)(const int&) noexcept(false)>();
+
+  test<int&>();
+  test<int&, int>();
+  test<int&&>();
+  test<int&&, int>();
+
+  test<Empty>();
+
+  test<Defaulted>();
+  test<Deleted>();
+
+  test<NoexceptTrue>();
+  test<NoexceptFalse>();
+  test<Noexcept>();
+
+  test<Protected>();
+  test<Private>();
+
+  test<NoexceptDependant<int> >();
+  test<NoexceptDependant<double> >();
+
+  test<std::string, char*>();
+  test<std::string, const char*>();
+  test<std::string, std::string&>();
+  test<std::string, std::initializer_list<char> >();
+
+  test<std::unique_ptr<int>, std::unique_ptr<int> >();
+  test<std::unique_ptr<int>, std::unique_ptr<int>&>();
+  test<std::unique_ptr<int>, std::unique_ptr<int>&&>();
+
+  test<std::array<int, 1> >();
+  test<std::array<int, 1>, int>();
+  test<std::array<int, 1>, int, int>();
+}
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.convertible/convertible_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.convertible/convertible_to.pass.cpp
new file mode 100644
index 0000000..acc3758
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.convertible/convertible_to.pass.cpp
@@ -0,0 +1,421 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class From, class To>
+// concept convertible_to;
+
+#include <concepts>
+#include <type_traits>
+
+namespace {
+enum ClassicEnum { a, b };
+enum class ScopedEnum { x, y };
+struct Empty {};
+using nullptr_t = decltype(nullptr);
+
+template <class T, class U>
+void CheckConvertibleTo() {
+  static_assert(std::convertible_to<T, U>);
+  static_assert(std::convertible_to<const T, U>);
+  static_assert(std::convertible_to<T, const U>);
+  static_assert(std::convertible_to<const T, const U>);
+}
+
+template <class T, class U>
+void CheckNotConvertibleTo() {
+  static_assert(!std::convertible_to<T, U>);
+  static_assert(!std::convertible_to<const T, U>);
+  static_assert(!std::convertible_to<T, const U>);
+  static_assert(!std::convertible_to<const T, const U>);
+}
+
+template <class T, class U>
+void CheckIsConvertibleButNotConvertibleTo() {
+  // Sanity check T is either implicitly xor explicitly convertible to U.
+  static_assert(std::is_convertible_v<T, U>);
+  static_assert(std::is_convertible_v<const T, U>);
+  static_assert(std::is_convertible_v<T, const U>);
+  static_assert(std::is_convertible_v<const T, const U>);
+  CheckNotConvertibleTo<T, U>();
+}
+
+// Tests that should objectively return false (except for bool and nullptr_t)
+template <class T>
+constexpr void CommonlyNotConvertibleTo() {
+  CheckNotConvertibleTo<T, void>();
+  CheckNotConvertibleTo<T, nullptr_t>();
+  CheckNotConvertibleTo<T, T*>();
+  CheckNotConvertibleTo<T, T Empty::*>();
+  CheckNotConvertibleTo<T, T (Empty::*)()>();
+  CheckNotConvertibleTo<T, T[sizeof(T)]>();
+  CheckNotConvertibleTo<T, T (*)()>();
+  CheckNotConvertibleTo<T, T (&)()>();
+  CheckNotConvertibleTo<T, T(&&)()>();
+}
+
+template <std::same_as<bool> >
+constexpr void CommonlyNotConvertibleTo() {
+  CheckNotConvertibleTo<bool, void>();
+  CheckNotConvertibleTo<bool, nullptr_t>();
+  CheckConvertibleTo<bool Empty::*, bool>();
+  CheckConvertibleTo<bool (Empty::*)(), bool>();
+  CheckConvertibleTo<bool[2], bool>();
+  CheckConvertibleTo<bool (*)(), bool>();
+  CheckConvertibleTo<bool (&)(), bool>();
+  CheckConvertibleTo<bool(&&)(), bool>();
+}
+
+template <std::same_as<nullptr_t> >
+constexpr void CommonlyNotConvertibleTo() {
+  CheckNotConvertibleTo<nullptr_t, void>();
+  CheckConvertibleTo<nullptr_t, nullptr_t>();
+  CheckConvertibleTo<nullptr_t, void*>();
+  CheckConvertibleTo<nullptr_t, int Empty::*>();
+  CheckConvertibleTo<nullptr_t, void (Empty::*)()>();
+  CheckNotConvertibleTo<nullptr_t, int[2]>();
+  CheckConvertibleTo<nullptr_t, void (*)()>();
+  CheckNotConvertibleTo<nullptr_t, void (&)()>();
+  CheckNotConvertibleTo<nullptr_t, void(&&)()>();
+}
+} // namespace
+
+using Function = void();
+using NoexceptFunction = void() noexcept;
+using ConstFunction = void() const;
+using Array = char[1];
+
+struct StringType {
+  StringType(const char*) {}
+};
+
+class NonCopyable {
+  NonCopyable(NonCopyable&);
+};
+
+template <typename T>
+class CannotInstantiate {
+  enum { X = T::ThisExpressionWillBlowUp };
+};
+
+struct abstract {
+  virtual int f() = 0;
+};
+
+struct ExplicitlyConvertible;
+struct ImplicitlyConvertible;
+
+struct ExplicitlyConstructible {
+  explicit ExplicitlyConstructible(int);
+  explicit ExplicitlyConstructible(ExplicitlyConvertible);
+  explicit ExplicitlyConstructible(ImplicitlyConvertible) = delete;
+};
+
+struct ExplicitlyConvertible {
+  explicit operator ExplicitlyConstructible() const {
+    return ExplicitlyConstructible(0);
+  }
+};
+
+struct ImplicitlyConstructible;
+
+struct ImplicitlyConvertible {
+  operator ExplicitlyConstructible() const;
+  operator ImplicitlyConstructible() const = delete;
+};
+
+struct ImplicitlyConstructible {
+  ImplicitlyConstructible(ImplicitlyConvertible);
+};
+
+int main(int, char**) {
+  // void
+  CheckConvertibleTo<void, void>();
+  CheckNotConvertibleTo<void, Function>();
+  CheckNotConvertibleTo<void, Function&>();
+  CheckNotConvertibleTo<void, Function*>();
+  CheckNotConvertibleTo<void, NoexceptFunction>();
+  CheckNotConvertibleTo<void, NoexceptFunction&>();
+  CheckNotConvertibleTo<void, NoexceptFunction*>();
+  CheckNotConvertibleTo<void, Array>();
+  CheckNotConvertibleTo<void, Array&>();
+  CheckNotConvertibleTo<void, char>();
+  CheckNotConvertibleTo<void, char&>();
+  CheckNotConvertibleTo<void, char*>();
+  CheckNotConvertibleTo<char, void>();
+
+  // Function
+  CheckNotConvertibleTo<Function, void>();
+  CheckNotConvertibleTo<Function, Function>();
+  CheckNotConvertibleTo<Function, NoexceptFunction>();
+  CheckNotConvertibleTo<Function, NoexceptFunction&>();
+  CheckNotConvertibleTo<Function, NoexceptFunction*>();
+  CheckNotConvertibleTo<Function, NoexceptFunction* const>();
+  CheckConvertibleTo<Function, Function&>();
+  CheckConvertibleTo<Function, Function*>();
+  CheckConvertibleTo<Function, Function* const>();
+
+  static_assert(std::convertible_to<Function, Function&&>);
+  static_assert(!std::convertible_to<Function, NoexceptFunction&&>);
+
+  CheckNotConvertibleTo<Function, Array>();
+  CheckNotConvertibleTo<Function, Array&>();
+  CheckNotConvertibleTo<Function, char>();
+  CheckNotConvertibleTo<Function, char&>();
+  CheckNotConvertibleTo<Function, char*>();
+
+  // Function&
+  CheckNotConvertibleTo<Function&, void>();
+  CheckNotConvertibleTo<Function&, Function>();
+  CheckConvertibleTo<Function&, Function&>();
+
+  CheckConvertibleTo<Function&, Function*>();
+  CheckNotConvertibleTo<Function&, Array>();
+  CheckNotConvertibleTo<Function&, Array&>();
+  CheckNotConvertibleTo<Function&, char>();
+  CheckNotConvertibleTo<Function&, char&>();
+  CheckNotConvertibleTo<Function&, char*>();
+
+  // Function*
+  CheckNotConvertibleTo<Function*, void>();
+  CheckNotConvertibleTo<Function*, Function>();
+  CheckNotConvertibleTo<Function*, Function&>();
+  CheckConvertibleTo<Function*, Function*>();
+
+  CheckNotConvertibleTo<Function*, Array>();
+  CheckNotConvertibleTo<Function*, Array&>();
+  CheckNotConvertibleTo<Function*, char>();
+  CheckNotConvertibleTo<Function*, char&>();
+  CheckNotConvertibleTo<Function*, char*>();
+
+  // Non-referencable function type
+  static_assert(!std::convertible_to<ConstFunction, Function>);
+  static_assert(!std::convertible_to<ConstFunction, Function*>);
+  static_assert(!std::convertible_to<ConstFunction, Function&>);
+  static_assert(!std::convertible_to<ConstFunction, Function&&>);
+  static_assert(!std::convertible_to<Function*, ConstFunction>);
+  static_assert(!std::convertible_to<Function&, ConstFunction>);
+  static_assert(!std::convertible_to<ConstFunction, ConstFunction>);
+  static_assert(!std::convertible_to<ConstFunction, void>);
+
+  // NoexceptFunction
+  CheckNotConvertibleTo<NoexceptFunction, void>();
+  CheckNotConvertibleTo<NoexceptFunction, Function>();
+  CheckNotConvertibleTo<NoexceptFunction, NoexceptFunction>();
+  CheckConvertibleTo<NoexceptFunction, NoexceptFunction&>();
+  CheckConvertibleTo<NoexceptFunction, NoexceptFunction*>();
+  CheckConvertibleTo<NoexceptFunction, NoexceptFunction* const>();
+  CheckConvertibleTo<NoexceptFunction, Function&>();
+  CheckConvertibleTo<NoexceptFunction, Function*>();
+  CheckConvertibleTo<NoexceptFunction, Function* const>();
+
+  static_assert(std::convertible_to<NoexceptFunction, Function&&>);
+  static_assert(std::convertible_to<NoexceptFunction, NoexceptFunction&&>);
+
+  CheckNotConvertibleTo<NoexceptFunction, Array>();
+  CheckNotConvertibleTo<NoexceptFunction, Array&>();
+  CheckNotConvertibleTo<NoexceptFunction, char>();
+  CheckNotConvertibleTo<NoexceptFunction, char&>();
+  CheckNotConvertibleTo<NoexceptFunction, char*>();
+
+  // NoexceptFunction&
+  CheckNotConvertibleTo<NoexceptFunction&, void>();
+  CheckNotConvertibleTo<NoexceptFunction&, Function>();
+  CheckNotConvertibleTo<NoexceptFunction&, NoexceptFunction>();
+  CheckConvertibleTo<NoexceptFunction&, Function&>();
+  CheckConvertibleTo<NoexceptFunction&, NoexceptFunction&>();
+
+  CheckConvertibleTo<NoexceptFunction&, Function*>();
+  CheckConvertibleTo<NoexceptFunction&, NoexceptFunction*>();
+  CheckNotConvertibleTo<NoexceptFunction&, Array>();
+  CheckNotConvertibleTo<NoexceptFunction&, Array&>();
+  CheckNotConvertibleTo<NoexceptFunction&, char>();
+  CheckNotConvertibleTo<NoexceptFunction&, char&>();
+  CheckNotConvertibleTo<NoexceptFunction&, char*>();
+
+  // NoexceptFunction*
+  CheckNotConvertibleTo<NoexceptFunction*, void>();
+  CheckNotConvertibleTo<NoexceptFunction*, Function>();
+  CheckNotConvertibleTo<NoexceptFunction*, Function&>();
+  CheckNotConvertibleTo<NoexceptFunction*, NoexceptFunction>();
+  CheckNotConvertibleTo<NoexceptFunction*, NoexceptFunction&>();
+  CheckConvertibleTo<NoexceptFunction*, Function*>();
+  CheckConvertibleTo<NoexceptFunction*, NoexceptFunction*>();
+
+  CheckNotConvertibleTo<NoexceptFunction*, Array>();
+  CheckNotConvertibleTo<NoexceptFunction*, Array&>();
+  CheckNotConvertibleTo<NoexceptFunction*, char>();
+  CheckNotConvertibleTo<NoexceptFunction*, char&>();
+  CheckNotConvertibleTo<NoexceptFunction*, char*>();
+
+  // Array
+  CheckNotConvertibleTo<Array, void>();
+  CheckNotConvertibleTo<Array, Function>();
+  CheckNotConvertibleTo<Array, Function&>();
+  CheckNotConvertibleTo<Array, Function*>();
+  CheckNotConvertibleTo<Array, NoexceptFunction>();
+  CheckNotConvertibleTo<Array, NoexceptFunction&>();
+  CheckNotConvertibleTo<Array, NoexceptFunction*>();
+  CheckNotConvertibleTo<Array, Array>();
+
+  static_assert(!std::convertible_to<Array, Array&>);
+  static_assert(std::convertible_to<Array, const Array&>);
+  static_assert(!std::convertible_to<Array, const volatile Array&>);
+
+  static_assert(!std::convertible_to<const Array, Array&>);
+  static_assert(std::convertible_to<const Array, const Array&>);
+  static_assert(!std::convertible_to<Array, volatile Array&>);
+  static_assert(!std::convertible_to<Array, const volatile Array&>);
+
+  static_assert(std::convertible_to<Array, Array&&>);
+  static_assert(std::convertible_to<Array, const Array&&>);
+  static_assert(std::convertible_to<Array, volatile Array&&>);
+  static_assert(std::convertible_to<Array, const volatile Array&&>);
+  static_assert(std::convertible_to<const Array, const Array&&>);
+  static_assert(!std::convertible_to<Array&, Array&&>);
+  static_assert(!std::convertible_to<Array&&, Array&>);
+
+  CheckNotConvertibleTo<Array, char>();
+  CheckNotConvertibleTo<Array, char&>();
+
+  static_assert(std::convertible_to<Array, char*>);
+  static_assert(std::convertible_to<Array, const char*>);
+  static_assert(std::convertible_to<Array, char* const>);
+  static_assert(std::convertible_to<Array, char* const volatile>);
+
+  static_assert(!std::convertible_to<const Array, char*>);
+  static_assert(std::convertible_to<const Array, const char*>);
+
+  static_assert(!std::convertible_to<char[42][42], char*>);
+  static_assert(!std::convertible_to<char[][1], char*>);
+
+  // Array&
+  CheckNotConvertibleTo<Array&, void>();
+  CheckNotConvertibleTo<Array&, Function>();
+  CheckNotConvertibleTo<Array&, Function&>();
+  CheckNotConvertibleTo<Array&, Function*>();
+  CheckNotConvertibleTo<Array&, NoexceptFunction>();
+  CheckNotConvertibleTo<Array&, NoexceptFunction&>();
+  CheckNotConvertibleTo<Array&, NoexceptFunction*>();
+  CheckNotConvertibleTo<Array&, Array>();
+
+  static_assert(std::convertible_to<Array&, Array&>);
+  static_assert(std::convertible_to<Array&, const Array&>);
+  static_assert(!std::convertible_to<const Array&, Array&>);
+  static_assert(std::convertible_to<const Array&, const Array&>);
+
+  CheckNotConvertibleTo<Array&, char>();
+  CheckNotConvertibleTo<Array&, char&>();
+
+  static_assert(std::convertible_to<Array&, char*>);
+  static_assert(std::convertible_to<Array&, const char*>);
+  static_assert(!std::convertible_to<const Array&, char*>);
+  static_assert(std::convertible_to<const Array&, const char*>);
+
+  static_assert(std::convertible_to<Array, StringType>);
+  static_assert(std::convertible_to<char(&)[], StringType>);
+
+  // char
+  CheckNotConvertibleTo<char, void>();
+  CheckNotConvertibleTo<char, Function>();
+  CheckNotConvertibleTo<char, Function&>();
+  CheckNotConvertibleTo<char, Function*>();
+  CheckNotConvertibleTo<char, NoexceptFunction>();
+  CheckNotConvertibleTo<char, NoexceptFunction&>();
+  CheckNotConvertibleTo<char, NoexceptFunction*>();
+  CheckNotConvertibleTo<char, Array>();
+  CheckNotConvertibleTo<char, Array&>();
+
+  CheckConvertibleTo<char, char>();
+
+  static_assert(!std::convertible_to<char, char&>);
+  static_assert(std::convertible_to<char, const char&>);
+  static_assert(!std::convertible_to<const char, char&>);
+  static_assert(std::convertible_to<const char, const char&>);
+
+  CheckNotConvertibleTo<char, char*>();
+
+  // char&
+  CheckNotConvertibleTo<char&, void>();
+  CheckNotConvertibleTo<char&, Function>();
+  CheckNotConvertibleTo<char&, Function&>();
+  CheckNotConvertibleTo<char&, Function*>();
+  CheckNotConvertibleTo<char&, NoexceptFunction>();
+  CheckNotConvertibleTo<char&, NoexceptFunction&>();
+  CheckNotConvertibleTo<char&, NoexceptFunction*>();
+  CheckNotConvertibleTo<char&, Array>();
+  CheckNotConvertibleTo<char&, Array&>();
+
+  CheckConvertibleTo<char&, char>();
+
+  static_assert(std::convertible_to<char&, char&>);
+  static_assert(std::convertible_to<char&, const char&>);
+  static_assert(!std::convertible_to<const char&, char&>);
+  static_assert(std::convertible_to<const char&, const char&>);
+
+  CheckNotConvertibleTo<char&, char*>();
+
+  // char*
+  CheckNotConvertibleTo<char*, void>();
+  CheckNotConvertibleTo<char*, Function>();
+  CheckNotConvertibleTo<char*, Function&>();
+  CheckNotConvertibleTo<char*, Function*>();
+  CheckNotConvertibleTo<char*, NoexceptFunction>();
+  CheckNotConvertibleTo<char*, NoexceptFunction&>();
+  CheckNotConvertibleTo<char*, NoexceptFunction*>();
+  CheckNotConvertibleTo<char*, Array>();
+  CheckNotConvertibleTo<char*, Array&>();
+
+  CheckNotConvertibleTo<char*, char>();
+  CheckNotConvertibleTo<char*, char&>();
+
+  static_assert(std::convertible_to<char*, char*>);
+  static_assert(std::convertible_to<char*, const char*>);
+  static_assert(!std::convertible_to<const char*, char*>);
+  static_assert(std::convertible_to<const char*, const char*>);
+
+  // NonCopyable
+  static_assert(std::convertible_to<NonCopyable&, NonCopyable&>);
+  static_assert(std::convertible_to<NonCopyable&, const NonCopyable&>);
+  static_assert(std::convertible_to<NonCopyable&, const volatile NonCopyable&>);
+  static_assert(std::convertible_to<NonCopyable&, volatile NonCopyable&>);
+  static_assert(std::convertible_to<const NonCopyable&, const NonCopyable&>);
+  static_assert(
+      std::convertible_to<const NonCopyable&, const volatile NonCopyable&>);
+  static_assert(
+      std::convertible_to<volatile NonCopyable&, const volatile NonCopyable&>);
+  static_assert(std::convertible_to<const volatile NonCopyable&,
+                                    const volatile NonCopyable&>);
+  static_assert(!std::convertible_to<const NonCopyable&, NonCopyable&>);
+
+  // This test requires Access control SFINAE which we only have in C++11 or when
+  // we are using the compiler builtin for convertible_to.
+  CheckNotConvertibleTo<NonCopyable&, NonCopyable>();
+
+  // Ensure that CannotInstantiate is not instantiated by convertible_to when it is not needed.
+  // For example CannotInstantiate is instantiated as a part of ADL lookup for arguments of type CannotInstantiate*.
+  static_assert(
+      std::convertible_to<CannotInstantiate<int>*, CannotInstantiate<int>*>);
+
+  // Test for PR13592
+  static_assert(!std::convertible_to<abstract, abstract>);
+
+  CommonlyNotConvertibleTo<int>();
+  CommonlyNotConvertibleTo<bool>();
+  CommonlyNotConvertibleTo<nullptr_t>();
+
+  CheckNotConvertibleTo<int, ExplicitlyConstructible>();
+  CheckNotConvertibleTo<ExplicitlyConvertible, ExplicitlyConstructible>();
+  CheckNotConvertibleTo<ExplicitlyConstructible, ExplicitlyConvertible>();
+  CheckIsConvertibleButNotConvertibleTo<ImplicitlyConvertible,
+                                        ExplicitlyConstructible>();
+  CheckNotConvertibleTo<ImplicitlyConstructible, ImplicitlyConvertible>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.copyconstructible/copy_constructible.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.copyconstructible/copy_constructible.compile.pass.cpp
new file mode 100644
index 0000000..cc349be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.copyconstructible/copy_constructible.compile.pass.cpp
@@ -0,0 +1,176 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept copy_constructible;
+
+#include <concepts>
+#include <type_traits>
+
+#include "type_classification/moveconstructible.h"
+
+// Tests in this namespace are shared with moveconstructible.pass.cpp
+// There are some interesting differences, so it's best if they're tested here
+// too.
+namespace MoveConstructibleTests {
+static_assert(std::copy_constructible<int>);
+static_assert(std::copy_constructible<int*>);
+static_assert(std::copy_constructible<int&>);
+static_assert(std::copy_constructible<const int>);
+static_assert(std::copy_constructible<const int&>);
+static_assert(std::copy_constructible<volatile int>);
+static_assert(std::copy_constructible<volatile int&>);
+static_assert(std::copy_constructible<int (*)()>);
+static_assert(std::copy_constructible<int (&)()>);
+static_assert(std::copy_constructible<HasDefaultOps>);
+static_assert(std::copy_constructible<const CustomMoveCtor&>);
+static_assert(std::copy_constructible<volatile CustomMoveCtor&>);
+static_assert(std::copy_constructible<const CustomMoveAssign&>);
+static_assert(std::copy_constructible<volatile CustomMoveAssign&>);
+static_assert(std::copy_constructible<int HasDefaultOps::*>);
+static_assert(std::copy_constructible<void (HasDefaultOps::*)(int)>);
+static_assert(std::copy_constructible<MemberLvalueReference>);
+
+static_assert(!std::copy_constructible<void>);
+static_assert(!std::copy_constructible<CustomMoveAssign>);
+static_assert(!std::copy_constructible<const CustomMoveCtor>);
+static_assert(!std::copy_constructible<volatile CustomMoveCtor>);
+static_assert(!std::copy_constructible<const CustomMoveAssign>);
+static_assert(!std::copy_constructible<volatile CustomMoveAssign>);
+static_assert(!std::copy_constructible<int[10]>);
+static_assert(!std::copy_constructible<DeletedMoveCtor>);
+static_assert(!std::copy_constructible<ImplicitlyDeletedMoveCtor>);
+static_assert(!std::copy_constructible<DeletedMoveAssign>);
+static_assert(!std::copy_constructible<ImplicitlyDeletedMoveAssign>);
+
+static_assert(std::copy_constructible<DeletedMoveCtor&>);
+static_assert(std::copy_constructible<const DeletedMoveCtor&>);
+static_assert(std::copy_constructible<ImplicitlyDeletedMoveCtor&>);
+static_assert(std::copy_constructible<const ImplicitlyDeletedMoveCtor&>);
+static_assert(std::copy_constructible<DeletedMoveAssign&>);
+static_assert(std::copy_constructible<const DeletedMoveAssign&>);
+static_assert(std::copy_constructible<ImplicitlyDeletedMoveAssign&>);
+static_assert(std::copy_constructible<const ImplicitlyDeletedMoveAssign&>);
+
+// different to moveconstructible.pass.cpp
+static_assert(!std::copy_constructible<int&&>);
+static_assert(!std::copy_constructible<const int&&>);
+static_assert(!std::copy_constructible<volatile int&&>);
+static_assert(!std::copy_constructible<CustomMoveCtor>);
+static_assert(!std::copy_constructible<MoveOnly>);
+static_assert(!std::copy_constructible<const CustomMoveCtor&&>);
+static_assert(!std::copy_constructible<volatile CustomMoveCtor&&>);
+static_assert(!std::copy_constructible<const CustomMoveAssign&&>);
+static_assert(!std::copy_constructible<volatile CustomMoveAssign&&>);
+static_assert(!std::copy_constructible<DeletedMoveCtor&&>);
+static_assert(!std::copy_constructible<const DeletedMoveCtor&&>);
+static_assert(!std::copy_constructible<ImplicitlyDeletedMoveCtor&&>);
+static_assert(!std::copy_constructible<const ImplicitlyDeletedMoveCtor&&>);
+static_assert(!std::copy_constructible<DeletedMoveAssign&&>);
+static_assert(!std::copy_constructible<const DeletedMoveAssign&&>);
+static_assert(!std::copy_constructible<ImplicitlyDeletedMoveAssign&&>);
+static_assert(!std::copy_constructible<const ImplicitlyDeletedMoveAssign&&>);
+static_assert(!std::copy_constructible<MemberRvalueReference>);
+} // namespace MoveConstructibleTests
+
+namespace CopyConstructibleTests {
+struct CopyCtorUserDefined {
+  CopyCtorUserDefined(CopyCtorUserDefined&&) noexcept = default;
+  CopyCtorUserDefined(const CopyCtorUserDefined&);
+};
+static_assert(std::copy_constructible<CopyCtorUserDefined>);
+
+struct CopyAssignUserDefined {
+  CopyAssignUserDefined& operator=(CopyAssignUserDefined&&) noexcept = default;
+  CopyAssignUserDefined& operator=(const CopyAssignUserDefined&);
+};
+static_assert(!std::copy_constructible<CopyAssignUserDefined>);
+
+struct CopyCtorAndAssignUserDefined {
+  CopyCtorAndAssignUserDefined(CopyCtorAndAssignUserDefined&&) noexcept =
+      default;
+  CopyCtorAndAssignUserDefined(const CopyCtorAndAssignUserDefined&);
+  CopyCtorAndAssignUserDefined&
+  operator=(CopyCtorAndAssignUserDefined&&) noexcept = default;
+  CopyCtorAndAssignUserDefined& operator=(const CopyCtorAndAssignUserDefined&);
+};
+static_assert(std::copy_constructible<CopyCtorAndAssignUserDefined>);
+
+struct CopyCtorDeleted {
+  CopyCtorDeleted(CopyCtorDeleted&&) noexcept = default;
+  CopyCtorDeleted(const CopyCtorDeleted&) = delete;
+};
+static_assert(!std::copy_constructible<CopyCtorDeleted>);
+
+struct CopyAssignDeleted {
+  CopyAssignDeleted(CopyAssignDeleted&&) noexcept = default;
+  CopyAssignDeleted(const CopyAssignDeleted&) = delete;
+};
+static_assert(!std::copy_constructible<CopyAssignDeleted>);
+
+struct CopyCtorHasMutableRef {
+  CopyCtorHasMutableRef(CopyCtorHasMutableRef&&) noexcept = default;
+  CopyCtorHasMutableRef(CopyCtorHasMutableRef&) = default;
+};
+static_assert(!std::copy_constructible<CopyCtorHasMutableRef>);
+
+struct CopyCtorProhibitsMutableRef {
+  CopyCtorProhibitsMutableRef(CopyCtorProhibitsMutableRef&&) noexcept = default;
+  CopyCtorProhibitsMutableRef(const CopyCtorProhibitsMutableRef&) = default;
+  CopyCtorProhibitsMutableRef(CopyCtorProhibitsMutableRef&) = delete;
+};
+static_assert(!std::copy_constructible<CopyCtorProhibitsMutableRef>);
+
+struct CopyAssignHasMutableRef {
+  CopyAssignHasMutableRef&
+  operator=(CopyAssignHasMutableRef&&) noexcept = default;
+  CopyAssignHasMutableRef& operator=(CopyAssignHasMutableRef&) = default;
+};
+static_assert(!std::copy_constructible<CopyAssignHasMutableRef>);
+
+struct CopyAssignProhibitsMutableRef {
+  CopyAssignProhibitsMutableRef&
+  operator=(CopyAssignProhibitsMutableRef&&) noexcept = default;
+  CopyAssignProhibitsMutableRef&
+  operator=(const CopyAssignProhibitsMutableRef&) = default;
+  CopyAssignProhibitsMutableRef&
+  operator=(CopyAssignProhibitsMutableRef&) = delete;
+};
+static_assert(!std::copy_constructible<CopyAssignProhibitsMutableRef>);
+
+struct CopyCtorOnly {
+  CopyCtorOnly(CopyCtorOnly&&) noexcept = delete;
+  CopyCtorOnly(const CopyCtorOnly&) = default;
+};
+static_assert(!std::copy_constructible<CopyCtorOnly>);
+
+struct CopyAssignOnly {
+  CopyAssignOnly& operator=(CopyAssignOnly&&) noexcept = delete;
+  CopyAssignOnly& operator=(const CopyAssignOnly&) = default;
+};
+static_assert(!std::copy_constructible<CopyAssignOnly>);
+
+struct CopyOnly {
+  CopyOnly(CopyOnly&&) noexcept = delete;
+  CopyOnly(const CopyOnly&) = default;
+
+  CopyOnly& operator=(CopyOnly&&) noexcept = delete;
+  CopyOnly& operator=(const CopyOnly&) = default;
+};
+static_assert(!std::copy_constructible<CopyOnly>);
+
+struct ExplicitlyCopyable {
+  ExplicitlyCopyable(ExplicitlyCopyable&&) = default;
+  explicit ExplicitlyCopyable(const ExplicitlyCopyable&);
+};
+static_assert(!std::copy_constructible<ExplicitlyCopyable>);
+} // namespace CopyConstructibleTests
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.default.init/default_initializable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.default.init/default_initializable.compile.pass.cpp
new file mode 100644
index 0000000..340c29f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.default.init/default_initializable.compile.pass.cpp
@@ -0,0 +1,268 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// We voluntarily use std::default_initializable on types that have redundant
+// or ignored cv-qualifiers -- don't warn about it.
+// ADDITIONAL_COMPILE_FLAGS: -Wno-ignored-qualifiers
+
+// template<class T>
+//     concept default_initializable = constructible_from<T> &&
+//     requires { T{}; } &&
+//     is-default-initializable<T>;
+
+#include <array>
+#include <concepts>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <queue>
+#include <set>
+#include <span>
+#include <stack>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "test_macros.h"
+
+struct Empty {};
+
+struct CtorDefaulted {
+  CtorDefaulted() = default;
+};
+struct CtorDeleted {
+  CtorDeleted() = delete;
+};
+struct DtorDefaulted {
+  ~DtorDefaulted() = default;
+};
+struct DtorDeleted {
+  ~DtorDeleted() = delete;
+};
+
+struct Noexcept {
+  ~Noexcept() noexcept;
+};
+struct NoexceptTrue {
+  ~NoexceptTrue() noexcept(true);
+};
+struct NoexceptFalse {
+  ~NoexceptFalse() noexcept(false);
+};
+
+struct CtorProtected {
+protected:
+  CtorProtected() = default;
+};
+struct CtorPrivate {
+private:
+  CtorPrivate() = default;
+};
+struct DtorProtected {
+protected:
+  ~DtorProtected() = default;
+};
+struct DtorPrivate {
+private:
+  ~DtorPrivate() = default;
+};
+
+template <class T>
+struct NoexceptDependant {
+  ~NoexceptDependant() noexcept(std::is_same_v<T, int>);
+};
+
+struct CtorExplicit {
+  explicit CtorExplicit() = default;
+};
+struct CtorArgument {
+  CtorArgument(int) {}
+};
+struct CtorDefaultArgument {
+  CtorDefaultArgument(int = 0) {}
+};
+struct CtorExplicitDefaultArgument {
+  explicit CtorExplicitDefaultArgument(int = 0) {}
+};
+
+struct Derived : public Empty {};
+
+class Abstract {
+  virtual void foo() = 0;
+};
+
+class AbstractDestructor {
+  virtual ~AbstractDestructor() = 0;
+};
+
+class OperatorNewDeleted {
+  void* operator new(std::size_t) = delete;
+  void operator delete(void* ptr) = delete;
+};
+
+[[maybe_unused]] auto Lambda = [](const int&, int&&, double){};
+
+template<class T>
+void test_not_const()
+{
+    static_assert( std::default_initializable<               T>);
+    static_assert(!std::default_initializable<const          T>);
+    static_assert( std::default_initializable<      volatile T>);
+    static_assert(!std::default_initializable<const volatile T>);
+}
+
+template<class T>
+void test_true()
+{
+    static_assert( std::default_initializable<               T>);
+    static_assert( std::default_initializable<const          T>);
+    static_assert( std::default_initializable<      volatile T>);
+    static_assert( std::default_initializable<const volatile T>);
+}
+
+template<class T>
+void test_false()
+{
+    static_assert(!std::default_initializable<               T>);
+    static_assert(!std::default_initializable<const          T>);
+    static_assert(!std::default_initializable<      volatile T>);
+    static_assert(!std::default_initializable<const volatile T>);
+}
+
+void test()
+{
+    test_not_const<bool>();
+    test_not_const<char>();
+    test_not_const<int>();
+    test_not_const<double>();
+
+    test_false    <void>();
+    test_not_const<void*>();
+
+    test_not_const<int*>();
+    test_false    <int[]>();
+    test_not_const<int[1]>();
+    test_false    <int&>();
+    test_false    <int&&>();
+
+    test_true     <Empty>();
+
+    test_true     <CtorDefaulted>();
+    test_false    <CtorDeleted>();
+    test_true     <DtorDefaulted>();
+    test_false    <DtorDeleted>();
+
+    test_true     <Noexcept>();
+    test_true     <NoexceptTrue>();
+    test_false    <NoexceptFalse>();
+
+    test_false    <CtorProtected>();
+    test_false    <CtorPrivate>();
+    test_false    <DtorProtected>();
+    test_false    <DtorPrivate>();
+
+    test_true     <NoexceptDependant<int>>();
+    test_false    <NoexceptDependant<double>>();
+
+    test_true     <CtorExplicit>();
+    test_false    <CtorArgument>();
+    test_true     <CtorDefaultArgument>();
+    test_true     <CtorExplicitDefaultArgument>();
+
+    test_true     <Derived>();
+    test_false    <Abstract>();
+    test_false    <AbstractDestructor>();
+
+    test_true     <OperatorNewDeleted>();
+
+    test_true     <decltype(Lambda)>();
+    test_not_const<void(*)(const int&)>();
+    test_not_const<void(Empty::*)(const int&)               >();
+    test_not_const<void(Empty::*)(const int&) const         >();
+    test_not_const<void(Empty::*)(const int&)       volatile>();
+    test_not_const<void(Empty::*)(const int&) const volatile>();
+    test_not_const<void(Empty::*)(const int&) &>();
+    test_not_const<void(Empty::*)(const int&) &&>();
+    test_not_const<void(Empty::*)(const int&) noexcept>();
+    test_not_const<void(Empty::*)(const int&) noexcept(true)>();
+    test_not_const<void(Empty::*)(const int&) noexcept(false)>();
+
+    // Sequence containers
+    test_not_const<std::array<               int, 0>>();
+    test_not_const<std::array<               int, 1>>();
+    test_false    <std::array<const          int, 1>>();
+    test_not_const<std::array<      volatile int, 1>>();
+    test_false    <std::array<const volatile int, 1>>();
+    test_true     <std::deque<               int>>();
+#ifdef _LIBCPP_VERSION
+    test_true     <std::deque<const          int>>();
+#endif // _LIBCPP_VERSION
+    test_true     <std::forward_list<int>>();
+    test_true     <std::list<int>>();
+    test_true     <std::vector<int>>();
+
+    // Associative containers
+    test_true     <std::set<int>>();
+    test_true     <std::map<int, int>>();
+    test_true     <std::multiset<int>>();
+    test_true     <std::multimap<int, int>>();
+
+    // Unordered associative containers
+    test_true     <std::unordered_set<int>>();
+    test_true     <std::unordered_map<int, int>>();
+    test_true     <std::unordered_multiset<int>>();
+    test_true     <std::unordered_multimap<int, int>>();
+
+    // Container adaptors
+    test_true     <std::stack<               int>>();
+#ifdef _LIBCPP_VERSION
+    test_true     <std::stack<const          int>>();
+#endif // _LIBCPP_VERSION
+    test_true     <std::queue<int>>();
+    test_true     <std::priority_queue<int>>();
+
+    test_true     <std::span<               int>>();
+    test_true     <std::span<const          int>>();
+    test_true     <std::span<      volatile int>>();
+    test_true     <std::span<const volatile int>>();
+
+    // Strings
+    test_true     <std::string>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_true     <std::wstring>();
+#endif
+    test_true     <std::u8string>();
+    test_true     <std::u16string>();
+    test_true     <std::u32string>();
+
+    // String views
+    test_true     <std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_true     <std::wstring_view>();
+#endif
+    test_true     <std::u8string_view>();
+    test_true     <std::u16string_view>();
+    test_true     <std::u32string_view>();
+
+    // Smart pointers
+    test_true     <std::unique_ptr<int>>();
+    test_true     <std::shared_ptr<int>>();
+    test_true     <std::weak_ptr<int>>();
+
+}
+
+// Required for MSVC internal test runner compatibility.
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.default.init/default_initializable.verify.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.default.init/default_initializable.verify.cpp
new file mode 100644
index 0000000..ec788ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.default.init/default_initializable.verify.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//     concept default_initializable = constructible_from<T> &&
+//     requires { T{}; } &&
+//     is-default-initializable<T>;
+
+#include <concepts>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<class T>
+concept brace_initializable = requires { T{}; };
+
+void test() {
+    // LWG3149
+    // Changed the concept from constructible_from<T>
+    // to constructible_from<T> &&
+    //    requires { T{}; } && is-default-initializable <T>
+    struct S0 { explicit S0() = default; };
+    S0 x0;
+    S0 y0{};
+    static_assert(std::constructible_from<S0>);
+    static_assert(brace_initializable<S0>);
+    LIBCPP_STATIC_ASSERT(std::__default_initializable<S0>);
+    static_assert(std::default_initializable<S0>);
+
+    struct S1 { S0 x; }; // Note: aggregate
+    S1 x1;
+    S1 y1{}; // expected-error {{chosen constructor is explicit in copy-initialization}}
+    static_assert(std::constructible_from<S1>);
+    static_assert(!brace_initializable<S1>);
+    LIBCPP_STATIC_ASSERT(std::__default_initializable<S1>);
+    static_assert(!std::default_initializable<S1>);
+
+    const int x2; // expected-error {{default initialization of an object of const type 'const int'}}
+    const int y2{};
+
+    static_assert(std::constructible_from<const int>);
+    static_assert(brace_initializable<const int>);
+    LIBCPP_STATIC_ASSERT(!std::__default_initializable<const int>);
+    static_assert(!std::default_initializable<const int>);
+
+    const int x3[1]; // expected-error-re {{default initialization of an object of const type 'const int{{[ ]*}}[1]'}}
+    const int y3[1]{};
+    static_assert(std::constructible_from<const int[1]>);
+    static_assert(brace_initializable<const int[1]>);
+    LIBCPP_STATIC_ASSERT(!std::__default_initializable<const int[1]>);
+    static_assert(!std::default_initializable<const int[1]>);
+
+    // Zero-length array extension
+    const int x4[]; // expected-error {{definition of variable with array type needs an explicit size or an initializer}}
+    const int y4[]{};
+    static_assert(!std::constructible_from<const int[]>);
+    static_assert(brace_initializable<const int[]>);
+    LIBCPP_STATIC_ASSERT(!std::__default_initializable<const int[]>);
+    static_assert(!std::default_initializable<const int[]>);
+}
+
+int main(int, char**) {
+    test();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.derived/derived_from.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.derived/derived_from.pass.cpp
new file mode 100644
index 0000000..b057102
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.derived/derived_from.pass.cpp
@@ -0,0 +1,497 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class Derived, class Base>
+// concept derived_from;
+
+#include <concepts>
+#include <type_traits>
+
+struct Base1 {};
+struct Derived1 : Base1 {};
+struct Derived2 : Base1 {};
+
+struct DerivedPrivate : private Base1 {};
+struct Derived3 : DerivedPrivate {};
+
+struct DerivedProtected : protected DerivedPrivate {};
+struct Derived4 : DerivedProtected {};
+struct Derived5 : Derived4 {};
+
+template <typename From, typename To>
+constexpr void CheckNotDerivedFromPointer() {
+  { // From as pointer
+    static_assert(!std::derived_from<From*, To>);
+    static_assert(!std::derived_from<From*, const To>);
+    static_assert(!std::derived_from<From*, volatile To>);
+    static_assert(!std::derived_from<From*, const volatile To>);
+
+    if constexpr (!std::same_as<To, void>) {
+      static_assert(!std::derived_from<From*, To&>);
+      static_assert(!std::derived_from<From*, const To&>);
+      static_assert(!std::derived_from<From*, volatile To&>);
+      static_assert(!std::derived_from<From*, const volatile To&>);
+
+      static_assert(!std::derived_from<From*, To&&>);
+      static_assert(!std::derived_from<From*, const To&&>);
+      static_assert(!std::derived_from<From*, volatile To&&>);
+      static_assert(!std::derived_from<From*, const volatile To&&>);
+
+      static_assert(!std::derived_from<const From*, To&>);
+      static_assert(!std::derived_from<const From*, const To&>);
+      static_assert(!std::derived_from<const From*, volatile To&>);
+      static_assert(!std::derived_from<const From*, const volatile To&>);
+
+      static_assert(!std::derived_from<const From*, To&&>);
+      static_assert(!std::derived_from<const From*, const To&&>);
+      static_assert(!std::derived_from<const From*, volatile To&&>);
+      static_assert(!std::derived_from<const From*, const volatile To&&>);
+
+      static_assert(!std::derived_from<volatile From*, To&>);
+      static_assert(!std::derived_from<volatile From*, const To&>);
+      static_assert(!std::derived_from<volatile From*, volatile To&>);
+      static_assert(!std::derived_from<volatile From*, const volatile To&>);
+
+      static_assert(!std::derived_from<volatile From*, To&&>);
+      static_assert(!std::derived_from<volatile From*, const To&&>);
+      static_assert(!std::derived_from<volatile From*, volatile To&&>);
+      static_assert(!std::derived_from<volatile From*, const volatile To&&>);
+
+      static_assert(!std::derived_from<const volatile From*, To&>);
+      static_assert(!std::derived_from<const volatile From*, const To&>);
+      static_assert(!std::derived_from<const volatile From*, volatile To&>);
+      static_assert(
+          !std::derived_from<const volatile From*, const volatile To&>);
+
+      static_assert(!std::derived_from<const volatile From*, To&&>);
+      static_assert(!std::derived_from<const volatile From*, const To&&>);
+      static_assert(!std::derived_from<const volatile From*, volatile To&&>);
+      static_assert(
+          !std::derived_from<const volatile From*, const volatile To&&>);
+    }
+  }
+  { // To as pointer
+    static_assert(!std::derived_from<From, To*>);
+    static_assert(!std::derived_from<From, const To*>);
+    static_assert(!std::derived_from<From, volatile To*>);
+    static_assert(!std::derived_from<From, const volatile To*>);
+
+    if constexpr (!std::same_as<From, void>) {
+      static_assert(!std::derived_from<From&, To*>);
+      static_assert(!std::derived_from<From&, const To*>);
+      static_assert(!std::derived_from<From&, volatile To*>);
+      static_assert(!std::derived_from<From&, const volatile To*>);
+
+      static_assert(!std::derived_from<From&&, To*>);
+      static_assert(!std::derived_from<From&&, const To*>);
+      static_assert(!std::derived_from<From&&, volatile To*>);
+      static_assert(!std::derived_from<From&&, const volatile To*>);
+
+      static_assert(!std::derived_from<const From&, To*>);
+      static_assert(!std::derived_from<const From&, const To*>);
+      static_assert(!std::derived_from<const From&, volatile To*>);
+      static_assert(!std::derived_from<const From&, const volatile To*>);
+
+      static_assert(!std::derived_from<const From&&, To*>);
+      static_assert(!std::derived_from<const From&&, const To*>);
+      static_assert(!std::derived_from<const From&&, volatile To*>);
+      static_assert(!std::derived_from<const From&&, const volatile To*>);
+
+      static_assert(!std::derived_from<volatile From&, To*>);
+      static_assert(!std::derived_from<volatile From&, const To*>);
+      static_assert(!std::derived_from<volatile From&, volatile To*>);
+      static_assert(!std::derived_from<volatile From&, const volatile To*>);
+
+      static_assert(!std::derived_from<volatile From&&, To*>);
+      static_assert(!std::derived_from<volatile From&&, const To*>);
+      static_assert(!std::derived_from<volatile From&&, volatile To*>);
+      static_assert(!std::derived_from<volatile From&&, const volatile To*>);
+
+      static_assert(!std::derived_from<const volatile From&, To*>);
+      static_assert(!std::derived_from<const volatile From&, const To*>);
+      static_assert(!std::derived_from<const volatile From&, volatile To*>);
+      static_assert(
+          !std::derived_from<const volatile From&, const volatile To*>);
+
+      static_assert(!std::derived_from<const volatile From&&, To*>);
+      static_assert(!std::derived_from<const volatile From&&, const To*>);
+      static_assert(!std::derived_from<const volatile From&&, volatile To*>);
+      static_assert(
+          !std::derived_from<const volatile From&&, const volatile To*>);
+    }
+  }
+  { // Both as pointers
+    static_assert(!std::derived_from<From*, To*>);
+    static_assert(!std::derived_from<From*, const To*>);
+    static_assert(!std::derived_from<From*, volatile To*>);
+    static_assert(!std::derived_from<From*, const volatile To*>);
+
+    static_assert(!std::derived_from<const From*, To*>);
+    static_assert(!std::derived_from<const From*, const To*>);
+    static_assert(!std::derived_from<const From*, volatile To*>);
+    static_assert(!std::derived_from<const From*, const volatile To*>);
+
+    static_assert(!std::derived_from<volatile From*, To*>);
+    static_assert(!std::derived_from<volatile From*, const To*>);
+    static_assert(!std::derived_from<volatile From*, volatile To*>);
+    static_assert(!std::derived_from<volatile From*, const volatile To*>);
+
+    static_assert(!std::derived_from<const volatile From*, To*>);
+    static_assert(!std::derived_from<const volatile From*, const To*>);
+    static_assert(!std::derived_from<const volatile From*, volatile To*>);
+    static_assert(!std::derived_from<const volatile From*, const volatile To*>);
+  }
+
+  // From as the return type of a pointer-to-function
+  if constexpr (!std::is_array_v<From>) {
+    static_assert(!std::derived_from<From (*)(), To>);
+    static_assert(!std::derived_from<From (*)(int), To>);
+  }
+
+  // To as the return type of a pointer-to-function
+  if constexpr (!std::is_array_v<To>) {
+    static_assert(!std::derived_from<From, To (*)()>);
+    static_assert(!std::derived_from<From, To (*)(double)>);
+  }
+
+  // Both as the return type of a pointer-to-function
+  if constexpr (!std::is_array_v<From> && !std::is_array_v<To>) {
+    static_assert(!std::derived_from<From (*)(), To (*)()>);
+    static_assert(!std::derived_from<From (*)(int), To (*)(double)>);
+  }
+  { // pointer-to-member
+    if constexpr (std::is_class_v<From> && !std::same_as<To, void>) {
+      static_assert(!std::derived_from<To From::*, To>);
+    }
+
+    if constexpr (std::is_class_v<To> && !std::same_as<From, void>) {
+      static_assert(!std::derived_from<From To::*, From>);
+    }
+  }
+  { // pointer-to-member-functions
+    if constexpr (std::is_class_v<From>) {
+      static_assert(!std::derived_from<From (From::*)(), To>);
+    }
+
+    if constexpr (std::is_class_v<To>) {
+      static_assert(!std::derived_from<To (To::*)(), From>);
+    }
+  }
+}
+
+template <typename From, typename To>
+constexpr void CheckNotDerivedFromReference() {
+  if constexpr (!std::same_as<To, void>) {
+    static_assert(!std::derived_from<From, To&>);
+    static_assert(!std::derived_from<From, const To&>);
+    static_assert(!std::derived_from<From, volatile To&>);
+    static_assert(!std::derived_from<From, const volatile To&>);
+
+    static_assert(!std::derived_from<From, To&&>);
+    static_assert(!std::derived_from<From, const To&&>);
+    static_assert(!std::derived_from<From, volatile To&&>);
+    static_assert(!std::derived_from<From, const volatile To&&>);
+  }
+
+  if constexpr (!std::same_as<From, void>) {
+    static_assert(!std::derived_from<From&, To>);
+    static_assert(!std::derived_from<From&, To>);
+    static_assert(!std::derived_from<From&, To>);
+    static_assert(!std::derived_from<From&, To>);
+
+    static_assert(!std::derived_from<From&&, To>);
+    static_assert(!std::derived_from<From&&, To>);
+    static_assert(!std::derived_from<From&&, To>);
+    static_assert(!std::derived_from<From&&, To>);
+  }
+
+  // From as lvalue references
+  if constexpr (!std::same_as<From, void> && !std::same_as<To, void>) {
+    static_assert(!std::derived_from<From&, To&>);
+    static_assert(!std::derived_from<From&, const To&>);
+    static_assert(!std::derived_from<From&, volatile To&>);
+    static_assert(!std::derived_from<From&, const volatile To&>);
+
+    static_assert(!std::derived_from<From&, To&&>);
+    static_assert(!std::derived_from<From&, const To&&>);
+    static_assert(!std::derived_from<From&, volatile To&&>);
+    static_assert(!std::derived_from<From&, const volatile To&&>);
+
+    static_assert(!std::derived_from<const From&, To&>);
+    static_assert(!std::derived_from<const From&, const To&>);
+    static_assert(!std::derived_from<const From&, volatile To&>);
+    static_assert(!std::derived_from<const From&, const volatile To&>);
+
+    static_assert(!std::derived_from<const From&, To&&>);
+    static_assert(!std::derived_from<const From&, const To&&>);
+    static_assert(!std::derived_from<const From&, volatile To&&>);
+    static_assert(!std::derived_from<const From&, const volatile To&&>);
+
+    static_assert(!std::derived_from<volatile From&, To&>);
+    static_assert(!std::derived_from<volatile From&, const To&>);
+    static_assert(!std::derived_from<volatile From&, volatile To&>);
+    static_assert(!std::derived_from<volatile From&, const volatile To&>);
+
+    static_assert(!std::derived_from<volatile From&, To&&>);
+    static_assert(!std::derived_from<volatile From&, const To&&>);
+    static_assert(!std::derived_from<volatile From&, volatile To&&>);
+    static_assert(!std::derived_from<volatile From&, const volatile To&&>);
+
+    static_assert(!std::derived_from<const volatile From&, To&>);
+    static_assert(!std::derived_from<const volatile From&, const To&>);
+    static_assert(!std::derived_from<const volatile From&, volatile To&>);
+    static_assert(!std::derived_from<const volatile From&, const volatile To&>);
+
+    static_assert(!std::derived_from<const volatile From&, To&&>);
+    static_assert(!std::derived_from<const volatile From&, const To&&>);
+    static_assert(!std::derived_from<const volatile From&, volatile To&&>);
+    static_assert(
+        !std::derived_from<const volatile From&, const volatile To&&>);
+
+    // From as rvalue references
+    static_assert(!std::derived_from<From&&, To&>);
+    static_assert(!std::derived_from<From&&, const To&>);
+    static_assert(!std::derived_from<From&&, volatile To&>);
+    static_assert(!std::derived_from<From&&, const volatile To&>);
+
+    static_assert(!std::derived_from<From&&, To&&>);
+    static_assert(!std::derived_from<From&&, const To&&>);
+    static_assert(!std::derived_from<From&&, volatile To&&>);
+    static_assert(!std::derived_from<From&&, const volatile To&&>);
+
+    static_assert(!std::derived_from<const From&&, To&>);
+    static_assert(!std::derived_from<const From&&, const To&>);
+    static_assert(!std::derived_from<const From&&, volatile To&>);
+    static_assert(!std::derived_from<const From&&, const volatile To&>);
+
+    static_assert(!std::derived_from<const From&&, To&&>);
+    static_assert(!std::derived_from<const From&&, const To&&>);
+    static_assert(!std::derived_from<const From&&, volatile To&&>);
+    static_assert(!std::derived_from<const From&&, const volatile To&&>);
+
+    static_assert(!std::derived_from<volatile From&&, To&>);
+    static_assert(!std::derived_from<volatile From&&, const To&>);
+    static_assert(!std::derived_from<volatile From&&, volatile To&>);
+    static_assert(!std::derived_from<volatile From&&, const volatile To&>);
+
+    static_assert(!std::derived_from<volatile From&&, To&&>);
+    static_assert(!std::derived_from<volatile From&&, const To&&>);
+    static_assert(!std::derived_from<volatile From&&, volatile To&&>);
+    static_assert(!std::derived_from<volatile From&&, const volatile To&&>);
+
+    static_assert(!std::derived_from<const volatile From&&, To&>);
+    static_assert(!std::derived_from<const volatile From&&, const To&>);
+    static_assert(!std::derived_from<const volatile From&&, volatile To&>);
+    static_assert(
+        !std::derived_from<const volatile From&&, const volatile To&>);
+
+    static_assert(!std::derived_from<const volatile From&&, To&&>);
+    static_assert(!std::derived_from<const volatile From&&, const To&&>);
+    static_assert(!std::derived_from<const volatile From&&, volatile To&&>);
+    static_assert(
+        !std::derived_from<const volatile From&&, const volatile To&&>);
+  }
+
+  // From as the return type of a reference-to-function
+  if constexpr (!std::is_array_v<From>) {
+    static_assert(!std::derived_from<From (&)(), To>);
+    static_assert(!std::derived_from<From (&)(int), To>);
+  }
+  // To as the return type of a reference-to-function
+  if constexpr (!std::is_array_v<To>) {
+    static_assert(!std::derived_from<From, To (&)()>);
+    static_assert(!std::derived_from<From, To (&)(double)>);
+  }
+  // Both as the return type of a reference-to-function
+  if constexpr (!std::is_array_v<From> && !std::is_array_v<To>) {
+    static_assert(!std::derived_from<From (&)(), To (&)()>);
+    static_assert(!std::derived_from<From (&)(int), To (&)(double)>);
+  }
+}
+
+template <typename From, typename To>
+constexpr void CheckDerivedFrom() {
+  static_assert(std::derived_from<From, To>);
+
+  static_assert(std::derived_from<From, const To>);
+  static_assert(std::derived_from<From, volatile To>);
+  static_assert(std::derived_from<From, const volatile To>);
+
+  static_assert(std::derived_from<const From, const To>);
+  static_assert(std::derived_from<const From, volatile To>);
+  static_assert(std::derived_from<const From, const volatile To>);
+
+  static_assert(std::derived_from<volatile From, const To>);
+  static_assert(std::derived_from<volatile From, volatile To>);
+  static_assert(std::derived_from<volatile From, const volatile To>);
+
+  static_assert(std::derived_from<const volatile From, const To>);
+  static_assert(std::derived_from<const volatile From, volatile To>);
+  static_assert(std::derived_from<const volatile From, const volatile To>);
+
+  CheckNotDerivedFromPointer<From, To>();
+  CheckNotDerivedFromReference<From, To>();
+}
+
+template <typename From, typename To>
+constexpr void CheckNotDerivedFrom() {
+  static_assert(!std::derived_from<From, To>);
+
+  static_assert(!std::derived_from<From, const To>);
+  static_assert(!std::derived_from<From, volatile To>);
+  static_assert(!std::derived_from<From, const volatile To>);
+
+  static_assert(!std::derived_from<const From, const To>);
+  static_assert(!std::derived_from<const From, volatile To>);
+  static_assert(!std::derived_from<const From, const volatile To>);
+
+  static_assert(!std::derived_from<volatile From, const To>);
+  static_assert(!std::derived_from<volatile From, volatile To>);
+  static_assert(!std::derived_from<volatile From, const volatile To>);
+
+  static_assert(!std::derived_from<const volatile From, const To>);
+  static_assert(!std::derived_from<const volatile From, volatile To>);
+  static_assert(!std::derived_from<const volatile From, const volatile To>);
+
+  CheckNotDerivedFromPointer<From, To>();
+  CheckNotDerivedFromReference<From, To>();
+}
+
+enum Enumeration { Yes, No };
+enum class ScopedEnumeration : int { No, Yes };
+
+int main(int, char**) {
+  { // Fundamentals shouldn't be derived from anything
+    CheckNotDerivedFrom<int, long>();
+    CheckNotDerivedFrom<signed char, char>();
+    CheckNotDerivedFrom<double, Base1>();
+
+    CheckNotDerivedFrom<int, Enumeration>();
+    CheckNotDerivedFrom<int, ScopedEnumeration>();
+
+    CheckNotDerivedFrom<void, void>();
+    CheckNotDerivedFrom<int, int>();
+  }
+  { // Nothing should be derived from a fundamental type
+    CheckNotDerivedFrom<Enumeration, int>();
+    CheckNotDerivedFrom<ScopedEnumeration, int>();
+
+    CheckNotDerivedFrom<Base1, int>();
+    CheckNotDerivedFrom<Base1, double>();
+    CheckNotDerivedFrom<Derived1, char>();
+    CheckNotDerivedFrom<DerivedPrivate, long long>();
+  }
+  { // Other built-in things shouldn't have derivations
+    CheckNotDerivedFrom<Enumeration, Enumeration>();
+    CheckNotDerivedFrom<ScopedEnumeration, ScopedEnumeration>();
+
+    CheckNotDerivedFrom<Enumeration, ScopedEnumeration>();
+    CheckNotDerivedFrom<ScopedEnumeration, Enumeration>();
+
+    CheckNotDerivedFrom<Base1[5], Base1>();
+    CheckNotDerivedFrom<Derived1[5], Base1>();
+
+    CheckNotDerivedFrom<Base1, Base1[5]>();
+    CheckNotDerivedFrom<Derived1, Base1[5]>();
+  }
+
+  { // Base1 is the subject.
+    CheckDerivedFrom<Base1, Base1>();
+
+    CheckNotDerivedFrom<Base1, void>();
+    CheckNotDerivedFrom<Base1, DerivedPrivate>();
+    CheckNotDerivedFrom<Base1, DerivedProtected>();
+    CheckNotDerivedFrom<Base1, Derived1>();
+    CheckNotDerivedFrom<Base1, Derived2>();
+    CheckNotDerivedFrom<Base1, Derived3>();
+    CheckNotDerivedFrom<Base1, Derived4>();
+  }
+
+  { // Derived1 is the subject.
+    CheckDerivedFrom<Derived1, Base1>();
+    CheckDerivedFrom<Derived1, Derived1>();
+
+    CheckNotDerivedFromPointer<Derived1, void>();
+    CheckNotDerivedFrom<Derived1, DerivedPrivate>();
+    CheckNotDerivedFrom<Derived1, DerivedProtected>();
+    CheckNotDerivedFrom<Derived1, Derived2>();
+    CheckNotDerivedFrom<Derived1, Derived3>();
+    CheckNotDerivedFrom<Derived1, Derived4>();
+  }
+
+  { // Derived2 is the subject.
+    CheckDerivedFrom<Derived2, Base1>();
+    CheckDerivedFrom<Derived2, Derived2>();
+
+    CheckNotDerivedFrom<Derived2, DerivedPrivate>();
+    CheckNotDerivedFrom<Derived2, DerivedProtected>();
+    CheckNotDerivedFrom<Derived2, Derived1>();
+    CheckNotDerivedFrom<Derived2, Derived3>();
+    CheckNotDerivedFrom<Derived2, Derived4>();
+  }
+
+  { // DerivedPrivate is the subject.
+    CheckDerivedFrom<DerivedPrivate, DerivedPrivate>();
+
+    CheckNotDerivedFrom<DerivedPrivate, Base1>();
+    CheckNotDerivedFrom<DerivedPrivate, DerivedProtected>();
+    CheckNotDerivedFrom<DerivedPrivate, Derived1>();
+    CheckNotDerivedFrom<DerivedPrivate, Derived2>();
+    CheckNotDerivedFrom<DerivedPrivate, Derived3>();
+    CheckNotDerivedFrom<DerivedPrivate, Derived4>();
+  }
+
+  { // Derived3 is the subject.
+    CheckDerivedFrom<Derived3, DerivedPrivate>();
+    CheckDerivedFrom<Derived3, Derived3>();
+
+    CheckNotDerivedFrom<Derived3, Base1>();
+    CheckNotDerivedFrom<Derived3, DerivedProtected>();
+    CheckNotDerivedFrom<Derived3, Derived1>();
+    CheckNotDerivedFrom<Derived3, Derived2>();
+    CheckNotDerivedFrom<Derived3, Derived4>();
+  }
+
+  { // DerivedProtected is the subject.
+    CheckDerivedFrom<DerivedProtected, DerivedProtected>();
+
+    CheckNotDerivedFromPointer<DerivedProtected, Base1>();
+    CheckNotDerivedFromPointer<DerivedProtected, DerivedPrivate>();
+    CheckNotDerivedFromPointer<DerivedProtected, Derived1>();
+    CheckNotDerivedFromPointer<DerivedProtected, Derived2>();
+    CheckNotDerivedFromPointer<DerivedProtected, Derived3>();
+    CheckNotDerivedFromPointer<DerivedProtected, Derived4>();
+  }
+
+  { // Derived4 is the subject.
+    CheckDerivedFrom<Derived4, DerivedProtected>();
+    CheckDerivedFrom<Derived4, Derived4>();
+
+    CheckNotDerivedFrom<Derived4, Base1>();
+    CheckNotDerivedFrom<Derived4, DerivedPrivate>();
+    CheckNotDerivedFrom<Derived4, Derived1>();
+    CheckNotDerivedFrom<Derived4, Derived2>();
+    CheckNotDerivedFrom<Derived4, Derived3>();
+  }
+
+  { // Derived5 is the subject.
+    CheckDerivedFrom<Derived5, DerivedProtected>();
+    CheckDerivedFrom<Derived5, Derived4>();
+    CheckDerivedFrom<Derived5, Derived5>();
+
+    CheckNotDerivedFrom<Derived5, Base1>();
+    CheckNotDerivedFrom<Derived5, DerivedPrivate>();
+    CheckNotDerivedFrom<Derived5, Derived1>();
+    CheckNotDerivedFrom<Derived5, Derived2>();
+    CheckNotDerivedFrom<Derived5, Derived3>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.destructible/destructible.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.destructible/destructible.compile.pass.cpp
new file mode 100644
index 0000000..aa86f59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.destructible/destructible.compile.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept destructible = is_nothrow_destructible_v<T>;
+
+#include <concepts>
+#include <type_traits>
+
+struct Empty {};
+
+struct Defaulted {
+  ~Defaulted() = default;
+};
+struct Deleted {
+  ~Deleted() = delete;
+};
+
+struct Noexcept {
+  ~Noexcept() noexcept;
+};
+struct NoexceptTrue {
+  ~NoexceptTrue() noexcept(true);
+};
+struct NoexceptFalse {
+  ~NoexceptFalse() noexcept(false);
+};
+
+struct Protected {
+protected:
+  ~Protected() = default;
+};
+struct Private {
+private:
+  ~Private() = default;
+};
+
+template <class T>
+struct NoexceptDependant {
+  ~NoexceptDependant() noexcept(std::is_same_v<T, int>);
+};
+
+template <class T>
+void test() {
+  static_assert(std::destructible<T> == std::is_nothrow_destructible_v<T>);
+}
+
+void test() {
+  test<Empty>();
+
+  test<Defaulted>();
+  test<Deleted>();
+
+  test<Noexcept>();
+  test<NoexceptTrue>();
+  test<NoexceptFalse>();
+
+  test<Protected>();
+  test<Private>();
+
+  test<NoexceptDependant<int> >();
+  test<NoexceptDependant<double> >();
+
+  test<bool>();
+  test<char>();
+  test<int>();
+  test<double>();
+}
+
+// Required for MSVC internal test runner compatibility.
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.moveconstructible/move_constructible.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.moveconstructible/move_constructible.compile.pass.cpp
new file mode 100644
index 0000000..b4003d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.moveconstructible/move_constructible.compile.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept move_constructible;
+
+#include <concepts>
+#include <type_traits>
+
+#include "type_classification/moveconstructible.h"
+
+static_assert(std::move_constructible<int>);
+static_assert(std::move_constructible<int*>);
+static_assert(std::move_constructible<int&>);
+static_assert(std::move_constructible<int&&>);
+static_assert(std::move_constructible<const int>);
+static_assert(std::move_constructible<const int&>);
+static_assert(std::move_constructible<const int&&>);
+static_assert(std::move_constructible<volatile int>);
+static_assert(std::move_constructible<volatile int&>);
+static_assert(std::move_constructible<volatile int&&>);
+static_assert(std::move_constructible<int (*)()>);
+static_assert(std::move_constructible<int (&)()>);
+static_assert(std::move_constructible<HasDefaultOps>);
+static_assert(std::move_constructible<CustomMoveCtor>);
+static_assert(std::move_constructible<MoveOnly>);
+static_assert(std::move_constructible<const CustomMoveCtor&>);
+static_assert(std::move_constructible<volatile CustomMoveCtor&>);
+static_assert(std::move_constructible<const CustomMoveCtor&&>);
+static_assert(std::move_constructible<volatile CustomMoveCtor&&>);
+static_assert(std::move_constructible<CustomMoveAssign>);
+static_assert(std::move_constructible<const CustomMoveAssign&>);
+static_assert(std::move_constructible<volatile CustomMoveAssign&>);
+static_assert(std::move_constructible<const CustomMoveAssign&&>);
+static_assert(std::move_constructible<volatile CustomMoveAssign&&>);
+static_assert(std::move_constructible<int HasDefaultOps::*>);
+static_assert(std::move_constructible<void (HasDefaultOps::*)(int)>);
+static_assert(std::move_constructible<MemberLvalueReference>);
+static_assert(std::move_constructible<MemberRvalueReference>);
+
+static_assert(!std::move_constructible<void>);
+static_assert(!std::move_constructible<const CustomMoveCtor>);
+static_assert(!std::move_constructible<volatile CustomMoveCtor>);
+static_assert(!std::move_constructible<const CustomMoveAssign>);
+static_assert(!std::move_constructible<volatile CustomMoveAssign>);
+static_assert(!std::move_constructible<int[10]>);
+static_assert(!std::move_constructible<DeletedMoveCtor>);
+static_assert(!std::move_constructible<ImplicitlyDeletedMoveCtor>);
+static_assert(!std::move_constructible<DeletedMoveAssign>);
+static_assert(!std::move_constructible<ImplicitlyDeletedMoveAssign>);
+
+static_assert(std::move_constructible<DeletedMoveCtor&>);
+static_assert(std::move_constructible<DeletedMoveCtor&&>);
+static_assert(std::move_constructible<const DeletedMoveCtor&>);
+static_assert(std::move_constructible<const DeletedMoveCtor&&>);
+static_assert(std::move_constructible<ImplicitlyDeletedMoveCtor&>);
+static_assert(std::move_constructible<ImplicitlyDeletedMoveCtor&&>);
+static_assert(std::move_constructible<const ImplicitlyDeletedMoveCtor&>);
+static_assert(std::move_constructible<const ImplicitlyDeletedMoveCtor&&>);
+static_assert(std::move_constructible<DeletedMoveAssign&>);
+static_assert(std::move_constructible<DeletedMoveAssign&&>);
+static_assert(std::move_constructible<const DeletedMoveAssign&>);
+static_assert(std::move_constructible<const DeletedMoveAssign&&>);
+static_assert(std::move_constructible<ImplicitlyDeletedMoveAssign&>);
+static_assert(std::move_constructible<ImplicitlyDeletedMoveAssign&&>);
+static_assert(std::move_constructible<const ImplicitlyDeletedMoveAssign&>);
+static_assert(std::move_constructible<const ImplicitlyDeletedMoveAssign&&>);
+
+static_assert(!std::move_constructible<NonMovable>);
+static_assert(!std::move_constructible<DerivedFromNonMovable>);
+static_assert(!std::move_constructible<HasANonMovable>);
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.same/same_as.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.same/same_as.pass.cpp
new file mode 100644
index 0000000..b3fb96e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.same/same_as.pass.cpp
@@ -0,0 +1,295 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class U>
+// concept same_as;
+
+#include <concepts>
+#include <type_traits>
+
+struct S1 {};
+struct S2 {
+  int i;
+
+  int& f();
+  double g(int x) const;
+};
+struct S3 {
+  int& r;
+};
+struct S4 {
+  int&& r;
+};
+struct S5 {
+  int* p;
+};
+
+class C1 {};
+class C2 {
+  [[maybe_unused]] int i;
+};
+
+class C3 {
+public:
+  int i;
+};
+
+template <class T1, class T2 = T1>
+class C4 {
+  int t1;
+  int t2;
+};
+
+template <class T1, class T2 = T1>
+class C5 {
+  [[maybe_unused]] T1 t1;
+
+public:
+  T2 t2;
+};
+
+template <class T1, class T2 = T1>
+class C6 {
+public:
+  [[maybe_unused]] T1 t1;
+  [[maybe_unused]] T2 t2;
+};
+
+template <class T>
+struct identity {
+  using type = T;
+};
+
+template <template <typename> class Modifier = identity>
+void CheckSameAs() {
+  static_assert(
+      std::same_as<typename Modifier<int>::type, typename Modifier<int>::type>);
+  static_assert(
+      std::same_as<typename Modifier<S1>::type, typename Modifier<S1>::type>);
+  static_assert(
+      std::same_as<typename Modifier<S2>::type, typename Modifier<S2>::type>);
+  static_assert(
+      std::same_as<typename Modifier<S3>::type, typename Modifier<S3>::type>);
+  static_assert(
+      std::same_as<typename Modifier<S4>::type, typename Modifier<S4>::type>);
+  static_assert(
+      std::same_as<typename Modifier<S5>::type, typename Modifier<S5>::type>);
+  static_assert(
+      std::same_as<typename Modifier<C1>::type, typename Modifier<C1>::type>);
+  static_assert(
+      std::same_as<typename Modifier<C2>::type, typename Modifier<C2>::type>);
+  static_assert(
+      std::same_as<typename Modifier<C3>::type, typename Modifier<C3>::type>);
+  static_assert(std::same_as<typename Modifier<C4<int> >::type,
+                             typename Modifier<C4<int> >::type>);
+  static_assert(std::same_as<typename Modifier<C4<int&> >::type,
+                             typename Modifier<C4<int&> >::type>);
+  static_assert(std::same_as<typename Modifier<C4<int&&> >::type,
+                             typename Modifier<C4<int&&> >::type>);
+  static_assert(std::same_as<typename Modifier<C5<int> >::type,
+                             typename Modifier<C5<int> >::type>);
+  static_assert(std::same_as<typename Modifier<C5<int&> >::type,
+                             typename Modifier<C5<int&> >::type>);
+  static_assert(std::same_as<typename Modifier<C5<int&&> >::type,
+                             typename Modifier<C5<int&&> >::type>);
+  static_assert(std::same_as<typename Modifier<C6<int> >::type,
+                             typename Modifier<C6<int> >::type>);
+  static_assert(std::same_as<typename Modifier<C6<int&> >::type,
+                             typename Modifier<C6<int&> >::type>);
+  static_assert(std::same_as<typename Modifier<C6<int&&> >::type,
+                             typename Modifier<C6<int&&> >::type>);
+
+  static_assert(std::same_as<typename Modifier<void>::type,
+                             typename Modifier<void>::type>);
+}
+
+template <template <typename> class Modifier1,
+          template <typename> class Modifier2>
+void CheckNotSameAs() {
+  static_assert(!std::same_as<typename Modifier1<int>::type,
+                              typename Modifier2<int>::type>);
+  static_assert(!std::same_as<typename Modifier1<S1>::type,
+                              typename Modifier2<S1>::type>);
+  static_assert(!std::same_as<typename Modifier1<S2>::type,
+                              typename Modifier2<S2>::type>);
+  static_assert(!std::same_as<typename Modifier1<S3>::type,
+                              typename Modifier2<S3>::type>);
+  static_assert(!std::same_as<typename Modifier1<S4>::type,
+                              typename Modifier2<S4>::type>);
+  static_assert(!std::same_as<typename Modifier1<S5>::type,
+                              typename Modifier2<S5>::type>);
+  static_assert(!std::same_as<typename Modifier1<C1>::type,
+                              typename Modifier2<C1>::type>);
+  static_assert(!std::same_as<typename Modifier1<C2>::type,
+                              typename Modifier2<C2>::type>);
+  static_assert(!std::same_as<typename Modifier1<C3>::type,
+                              typename Modifier2<C3>::type>);
+  static_assert(!std::same_as<typename Modifier1<C4<int> >::type,
+                              typename Modifier2<C4<int> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C4<int&> >::type,
+                              typename Modifier2<C4<int&> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C4<int&&> >::type,
+                              typename Modifier2<C4<int&&> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C5<int> >::type,
+                              typename Modifier2<C5<int> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C5<int&> >::type,
+                              typename Modifier2<C5<int&> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C5<int&&> >::type,
+                              typename Modifier2<C5<int&&> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C6<int> >::type,
+                              typename Modifier2<C6<int> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C6<int&> >::type,
+                              typename Modifier2<C6<int&> >::type>);
+  static_assert(!std::same_as<typename Modifier1<C6<int&&> >::type,
+                              typename Modifier2<C6<int&&> >::type>);
+}
+
+// Checks subsumption works as intended
+template <class T, class U>
+requires std::same_as<T, U> void SubsumptionTest();
+
+// clang-format off
+template <class T, class U>
+requires std::same_as<U, T> && true // NOLINT(readability-simplify-boolean-expr)
+int SubsumptionTest();
+// clang-format on
+
+static_assert(std::same_as<int, decltype(SubsumptionTest<int, int>())>);
+static_assert(std::same_as<int, decltype(SubsumptionTest<void, void>())>);
+static_assert(
+    std::same_as<int, decltype(SubsumptionTest<int (*)(), int (*)()>())>);
+static_assert(
+    std::same_as<
+        int, decltype(SubsumptionTest<double (&)(int), double (&)(int)>())>);
+static_assert(
+    std::same_as<int, decltype(SubsumptionTest<int S2::*, int S2::*>())>);
+static_assert(
+    std::same_as<int,
+                 decltype(SubsumptionTest<int& (S2::*)(), int& (S2::*)()>())>);
+
+int main(int, char**) {
+  { // Checks std::same_as<T, T> is true
+    CheckSameAs();
+
+    // Checks std::same_as<T&, T&> is true
+    CheckSameAs<std::add_lvalue_reference>();
+
+    // Checks std::same_as<T&&, T&&> is true
+    CheckSameAs<std::add_rvalue_reference>();
+
+    // Checks std::same_as<const T, const T> is true
+    CheckSameAs<std::add_const>();
+
+    // Checks std::same_as<volatile T, volatile T> is true
+    CheckSameAs<std::add_volatile>();
+
+    // Checks std::same_as<const volatile T, const volatile T> is true
+    CheckSameAs<std::add_cv>();
+
+    // Checks std::same_as<T*, T*> is true
+    CheckSameAs<std::add_pointer>();
+
+    // Checks concrete types are identical
+    static_assert(std::same_as<void, void>);
+
+    using Void = void;
+    static_assert(std::same_as<void, Void>);
+
+    static_assert(std::same_as<int[1], int[1]>);
+    static_assert(std::same_as<int[2], int[2]>);
+
+    static_assert(std::same_as<int (*)(), int (*)()>);
+    static_assert(std::same_as<void (&)(), void (&)()>);
+    static_assert(std::same_as<S1& (*)(S1), S1& (*)(S1)>);
+    static_assert(std::same_as<C1& (&)(S1, int), C1& (&)(S1, int)>);
+
+    static_assert(std::same_as<int S2::*, int S2::*>);
+    static_assert(std::same_as<double S2::*, double S2::*>);
+
+    static_assert(std::same_as<int& (S2::*)(), int& (S2::*)()>);
+    static_assert(std::same_as<double& (S2::*)(int), double& (S2::*)(int)>);
+  }
+
+  { // Checks that `T` and `T&` are distinct types
+    CheckNotSameAs<identity, std::add_lvalue_reference>();
+    CheckNotSameAs<std::add_lvalue_reference, identity>();
+
+    // Checks that `T` and `T&&` are distinct types
+    CheckNotSameAs<identity, std::add_rvalue_reference>();
+    CheckNotSameAs<std::add_rvalue_reference, identity>();
+
+    // Checks that `T` and `const T` are distinct types
+    CheckNotSameAs<identity, std::add_const>();
+    CheckNotSameAs<std::add_const, identity>();
+
+    // Checks that `T` and `volatile T` are distinct types
+    CheckNotSameAs<identity, std::add_volatile>();
+    CheckNotSameAs<std::add_volatile, identity>();
+
+    // Checks that `T` and `const volatile T` are distinct types
+    CheckNotSameAs<identity, std::add_cv>();
+    CheckNotSameAs<std::add_cv, identity>();
+
+    // Checks that `const T` and `volatile T` are distinct types
+    CheckNotSameAs<std::add_const, std::add_volatile>();
+    CheckNotSameAs<std::add_volatile, std::add_const>();
+
+    // Checks that `const T` and `const volatile T` are distinct types
+    CheckNotSameAs<std::add_const, std::add_cv>();
+    CheckNotSameAs<std::add_cv, std::add_const>();
+
+    // Checks that `volatile T` and `const volatile T` are distinct types
+    CheckNotSameAs<std::add_volatile, std::add_cv>();
+    CheckNotSameAs<std::add_cv, std::add_volatile>();
+
+    // Checks `T&` and `T&&` are distinct types
+    CheckNotSameAs<std::add_lvalue_reference, std::add_rvalue_reference>();
+    CheckNotSameAs<std::add_rvalue_reference, std::add_lvalue_reference>();
+  }
+
+  { // Checks different type names are distinct types
+    static_assert(!std::same_as<S1, C1>);
+    static_assert(!std::same_as<C4<int>, C5<int> >);
+    static_assert(!std::same_as<C4<int>, C5<int> >);
+    static_assert(!std::same_as<C5<int, double>, C5<double, int> >);
+
+    static_assert(!std::same_as<int&, const int&>);
+    static_assert(!std::same_as<int&, volatile int&>);
+    static_assert(!std::same_as<int&, const volatile int&>);
+
+    static_assert(!std::same_as<int&&, const int&>);
+    static_assert(!std::same_as<int&&, volatile int&>);
+    static_assert(!std::same_as<int&&, const volatile int&>);
+
+    static_assert(!std::same_as<int&, const int&&>);
+    static_assert(!std::same_as<int&, volatile int&&>);
+    static_assert(!std::same_as<int&, const volatile int&&>);
+
+    static_assert(!std::same_as<int&&, const int&&>);
+    static_assert(!std::same_as<int&&, volatile int&&>);
+    static_assert(!std::same_as<int&&, const volatile int&&>);
+
+    static_assert(!std::same_as<void, int>);
+
+    static_assert(!std::same_as<int[1], int[2]>);
+    static_assert(!std::same_as<double[1], int[2]>);
+
+    static_assert(!std::same_as<int* (*)(), const int* (*)()>);
+    static_assert(!std::same_as<void (&)(), void (&)(S1)>);
+    static_assert(!std::same_as<S1 (*)(S1), S1& (*)(S1)>);
+    static_assert(!std::same_as<C3 (&)(int), C1& (&)(S1, int)>);
+
+    static_assert(!std::same_as<int S2::*, double S2::*>);
+
+    static_assert(!std::same_as<int& (S2::*)(), double& (S2::*)(int)>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.swappable/swappable.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.swappable/swappable.pass.cpp
new file mode 100644
index 0000000..ee82835
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.swappable/swappable.pass.cpp
@@ -0,0 +1,307 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept swappable = // see below
+
+#include <concepts>
+
+#include <algorithm>
+#include <cassert>
+#include <deque>
+#include <map>
+#include <memory>
+#include <string>
+#include <optional>
+#include <unordered_map>
+#include <vector>
+
+#include "test_macros.h"
+#include "type_classification/moveconstructible.h"
+#include "type_classification/swappable.h"
+
+template <class T>
+struct expected {
+  T x;
+  T y;
+};
+
+// clang-format off
+// Checks [concept.swappable]/2.1
+template <class T, class U>
+requires std::same_as<std::remove_cvref_t<T>, std::remove_cvref_t<U> > &&
+         std::swappable<std::remove_cvref_t<T> >
+constexpr bool check_swap_21(T&& x, U&& y) {
+  expected<std::remove_cvref_t<T> > const e{y, x};
+  std::ranges::swap(std::forward<T>(x), std::forward<U>(y));
+  return x == e.x && y == e.y;
+}
+
+// Checks [concept.swappable]/2.2
+template <std::swappable T, std::size_t N>
+constexpr bool check_swap_22(T (&x)[N], T (&y)[N]) {
+  expected<T[N]> e;
+  std::copy(y, y + N, e.x);
+  std::copy(x, x + N, e.y);
+
+  std::ranges::swap(x, y);
+  return std::equal(x, x + N, e.x, e.x + N) &&
+         std::equal(y, y + N, e.y, e.y + N);
+}
+
+// Checks [concept.swappable]/2.3
+template <std::swappable T>
+requires std::copy_constructible<std::remove_cvref_t<T> >
+constexpr bool check_swap_23(T x, T y) {
+  expected<std::remove_cvref_t<T> > const e{y, x};
+  std::ranges::swap(x, y);
+  return x == e.x && y == e.y;
+}
+// clang-format on
+
+constexpr bool check_lvalue_adl_swappable() {
+  auto x = lvalue_adl_swappable(0);
+  auto y = lvalue_adl_swappable(1);
+  ASSERT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_21(x, y));
+  return true;
+}
+static_assert(check_lvalue_adl_swappable());
+
+constexpr bool check_rvalue_adl_swappable() {
+  ASSERT_NOEXCEPT(std::ranges::swap(rvalue_adl_swappable(0), rvalue_adl_swappable(1)));
+  assert(check_swap_21(rvalue_adl_swappable(0), rvalue_adl_swappable(1)));
+  return true;
+}
+static_assert(check_rvalue_adl_swappable());
+
+constexpr bool check_lvalue_rvalue_adl_swappable() {
+  auto x = lvalue_rvalue_adl_swappable(0);
+  ASSERT_NOEXCEPT(std::ranges::swap(x, lvalue_rvalue_adl_swappable(1)));
+  assert(check_swap_21(x, lvalue_rvalue_adl_swappable(1)));
+  return true;
+}
+static_assert(check_lvalue_rvalue_adl_swappable());
+
+constexpr bool check_rvalue_lvalue_adl_swappable() {
+  auto x = rvalue_lvalue_adl_swappable(0);
+  ASSERT_NOEXCEPT(std::ranges::swap(rvalue_lvalue_adl_swappable(1), x));
+  assert(check_swap_21(rvalue_lvalue_adl_swappable(1), x));
+  return true;
+}
+static_assert(check_rvalue_lvalue_adl_swappable());
+
+constexpr bool check_throwable_swappable() {
+  auto x = throwable_adl_swappable{0};
+  auto y = throwable_adl_swappable{1};
+  ASSERT_NOT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_21(x, y));
+  return true;
+}
+static_assert(check_throwable_swappable());
+
+constexpr bool check_non_move_constructible_adl_swappable() {
+  auto x = non_move_constructible_adl_swappable{0};
+  auto y = non_move_constructible_adl_swappable{1};
+  ASSERT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_21(x, y));
+  return true;
+}
+static_assert(check_non_move_constructible_adl_swappable());
+
+constexpr bool check_non_move_assignable_adl_swappable() {
+  auto x = non_move_assignable_adl_swappable{0};
+  auto y = non_move_assignable_adl_swappable{1};
+  ASSERT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_21(x, y));
+  return true;
+}
+static_assert(check_non_move_assignable_adl_swappable());
+
+namespace swappable_namespace {
+enum unscoped { hello, world };
+void swap(unscoped&, unscoped&);
+
+enum class scoped { hello, world };
+void swap(scoped&, scoped&);
+} // namespace swappable_namespace
+
+static_assert(std::swappable<swappable_namespace::unscoped>);
+static_assert(std::swappable<swappable_namespace::scoped>);
+
+constexpr bool check_swap_arrays() {
+  int x[] = {0, 1, 2, 3, 4};
+  int y[] = {5, 6, 7, 8, 9};
+  ASSERT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_22(x, y));
+  return true;
+}
+static_assert(check_swap_arrays());
+
+constexpr bool check_lvalue_adl_swappable_arrays() {
+  lvalue_adl_swappable x[] = {{0}, {1}, {2}, {3}};
+  lvalue_adl_swappable y[] = {{4}, {5}, {6}, {7}};
+  ASSERT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_22(x, y));
+  return true;
+}
+static_assert(check_lvalue_adl_swappable_arrays());
+
+constexpr bool check_throwable_adl_swappable_arrays() {
+  throwable_adl_swappable x[] = {{0}, {1}, {2}, {3}};
+  throwable_adl_swappable y[] = {{4}, {5}, {6}, {7}};
+  ASSERT_NOT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_22(x, y));
+  return true;
+}
+static_assert(check_throwable_adl_swappable_arrays());
+
+auto global_x = 0;
+ASSERT_NOEXCEPT(std::ranges::swap(global_x, global_x));
+static_assert(check_swap_23(0, 0));
+static_assert(check_swap_23(0, 1));
+static_assert(check_swap_23(1, 0));
+
+constexpr bool check_swappable_references() {
+  int x = 42;
+  int y = 64;
+  ASSERT_NOEXCEPT(std::ranges::swap(x, y));
+  assert(check_swap_23(x, y));
+  return true;
+}
+static_assert(check_swappable_references());
+
+constexpr bool check_swappable_pointers() {
+  char const* x = "hello";
+  ASSERT_NOEXCEPT(std::ranges::swap(x, x));
+  assert(check_swap_23(x, {}));
+  return true;
+}
+static_assert(check_swappable_pointers());
+
+namespace union_swap {
+union adl_swappable {
+  int x;
+  double y;
+};
+
+void swap(adl_swappable&, adl_swappable&);
+void swap(adl_swappable&&, adl_swappable&&);
+} // namespace union_swap
+static_assert(std::swappable<union_swap::adl_swappable>);
+static_assert(std::swappable<union_swap::adl_swappable&>);
+static_assert(std::swappable<union_swap::adl_swappable&&>);
+
+// All tests for std::swappable<T> are implicitly confirmed by `check_swap`, so we only need to
+// sanity check for a few positive cases.
+static_assert(std::swappable<int volatile&>);
+static_assert(std::swappable<int&&>);
+static_assert(std::swappable<int (*)()>);
+static_assert(std::swappable<int rvalue_adl_swappable::*>);
+static_assert(std::swappable<int (rvalue_adl_swappable::*)()>);
+static_assert(std::swappable<std::unique_ptr<int> >);
+
+static_assert(!std::swappable<void>);
+static_assert(!std::swappable<int const>);
+static_assert(!std::swappable<int const&>);
+static_assert(!std::swappable<int const&&>);
+static_assert(!std::swappable<int const volatile>);
+static_assert(!std::swappable<int const volatile&>);
+static_assert(!std::swappable<int const volatile&&>);
+static_assert(!std::swappable<int (&)()>);
+static_assert(!std::swappable<DeletedMoveCtor>);
+static_assert(!std::swappable<ImplicitlyDeletedMoveCtor>);
+static_assert(!std::swappable<DeletedMoveAssign>);
+static_assert(!std::swappable<ImplicitlyDeletedMoveAssign>);
+static_assert(!std::swappable<NonMovable>);
+static_assert(!std::swappable<DerivedFromNonMovable>);
+static_assert(!std::swappable<HasANonMovable>);
+
+using swap_type = std::remove_const_t<decltype(std::ranges::swap)>;
+static_assert(std::default_initializable<swap_type>);
+static_assert(std::move_constructible<swap_type>);
+static_assert(std::copy_constructible<swap_type>);
+static_assert(std::assignable_from<swap_type&, swap_type>);
+static_assert(std::assignable_from<swap_type&, swap_type&>);
+static_assert(std::assignable_from<swap_type&, swap_type const&>);
+static_assert(std::assignable_from<swap_type&, swap_type const>);
+static_assert(std::swappable<swap_type>);
+
+enum class nothrow { no, yes };
+
+template <nothrow is_noexcept, std::swappable T>
+void check_swap(expected<T> const& e) {
+  auto a = e.y;
+  auto b = e.x;
+
+  std::ranges::swap(a, b);
+  assert(a == e.x);
+  assert(b == e.y);
+
+  std::ranges::swap(a, b);
+  assert(a == e.y);
+  assert(b == e.x);
+
+  static_assert(noexcept(std::ranges::swap(a, b)) == bool(is_noexcept));
+}
+
+int main(int, char**) {
+  {
+    auto const e = expected<std::deque<int> >{
+        .x = {6, 7, 8, 9},
+        .y = {0, 1, 2, 3, 4, 5},
+    };
+    check_swap<nothrow::yes>(e);
+  }
+  {
+    auto const e = expected<std::map<int, std::string> >{
+        .x = {{0, "whole"}, {1, "cashews"}},
+        .y = {{-1, "roasted"}, {2, "&"}, {-3, "salted"}},
+    };
+    check_swap<nothrow::yes>(e);
+  }
+  {
+    auto const e = expected<std::string>{
+        .x = "hello there",
+        .y = "general kenobi",
+    };
+    check_swap<nothrow::yes>(e);
+  }
+  {
+    auto const e = expected<std::optional<lvalue_adl_swappable> >{
+        .x = {10},
+        .y = {20},
+    };
+    check_swap<nothrow::yes>(e);
+  }
+  {
+    auto const e = expected<std::optional<throwable_adl_swappable> >{
+        .x = {10},
+        .y = {20},
+    };
+    check_swap<nothrow::no>(e);
+  }
+  {
+    auto const e = expected<std::unordered_map<int, std::string> >{
+        .x = {{0, "whole"}, {1, "cashews"}},
+        .y = {{-1, "roasted"}, {2, "&"}, {-3, "salted"}},
+    };
+    check_swap<nothrow::yes>(e);
+  }
+  {
+    auto const e = expected<std::vector<int> >{
+        .x = {0, 1, 2, 3, 4, 5},
+        .y = {6, 7, 8, 9},
+    };
+
+    check_swap<nothrow::yes>(e);
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.swappable/swappable_with.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.swappable/swappable_with.compile.pass.cpp
new file mode 100644
index 0000000..3d128eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concept.swappable/swappable_with.compile.pass.cpp
@@ -0,0 +1,685 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class U>
+// concept swappable_with = // see below
+
+#include <concepts>
+
+#include <array>
+#include <cassert>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "type_classification/moveconstructible.h"
+#include "type_classification/swappable.h"
+
+template <class T, class U>
+constexpr bool check_swappable_with_impl() {
+  static_assert(std::swappable_with<T, U> == std::swappable_with<U, T>);
+  return std::swappable_with<T, U>;
+}
+
+template <class T, class U>
+constexpr bool check_swappable_with() {
+  static_assert(!check_swappable_with_impl<T, U>());
+  static_assert(!check_swappable_with_impl<T, U const>());
+  static_assert(!check_swappable_with_impl<T const, U>());
+  static_assert(!check_swappable_with_impl<T const, U const>());
+
+  static_assert(!check_swappable_with_impl<T, U&>());
+  static_assert(!check_swappable_with_impl<T, U const&>());
+  static_assert(!check_swappable_with_impl<T, U volatile&>());
+  static_assert(!check_swappable_with_impl<T, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T const, U&>());
+  static_assert(!check_swappable_with_impl<T const, U const&>());
+  static_assert(!check_swappable_with_impl<T const, U volatile&>());
+  static_assert(!check_swappable_with_impl<T const, U const volatile&>());
+
+  static_assert(!check_swappable_with_impl<T&, U>());
+  static_assert(!check_swappable_with_impl<T&, U const>());
+  static_assert(!check_swappable_with_impl<T const&, U>());
+  static_assert(!check_swappable_with_impl<T const&, U const>());
+  static_assert(!check_swappable_with_impl<T volatile&, U>());
+  static_assert(!check_swappable_with_impl<T volatile&, U const>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U const>());
+
+  static_assert(!check_swappable_with_impl<T&, U const&>());
+  static_assert(!check_swappable_with_impl<T&, U volatile&>());
+  static_assert(!check_swappable_with_impl<T&, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T const&, U&>());
+  static_assert(!check_swappable_with_impl<T const&, U const&>());
+  static_assert(!check_swappable_with_impl<T const&, U volatile&>());
+  static_assert(!check_swappable_with_impl<T const&, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U const&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U&>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U const&>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U volatile&>());
+  static_assert(
+      !check_swappable_with_impl<T const volatile&, U const volatile&>());
+
+  static_assert(!check_swappable_with_impl<T, U&&>());
+  static_assert(!check_swappable_with_impl<T, U const&&>());
+  static_assert(!check_swappable_with_impl<T, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T const, U&&>());
+  static_assert(!check_swappable_with_impl<T const, U const&&>());
+  static_assert(!check_swappable_with_impl<T const, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T const, U const volatile&&>());
+
+  static_assert(!check_swappable_with_impl<T&&, U>());
+  static_assert(!check_swappable_with_impl<T&&, U const>());
+  static_assert(!check_swappable_with_impl<T const&&, U>());
+  static_assert(!check_swappable_with_impl<T const&&, U const>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U const>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U const>());
+
+  static_assert(!check_swappable_with_impl<T&, U&&>());
+  static_assert(!check_swappable_with_impl<T&, U const&&>());
+  static_assert(!check_swappable_with_impl<T&, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T&, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T const&, U&&>());
+  static_assert(!check_swappable_with_impl<T const&, U const&&>());
+  static_assert(!check_swappable_with_impl<T const&, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T const&, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U&&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U const&&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T volatile&, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U&&>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U const&&>());
+  static_assert(!check_swappable_with_impl<T const volatile&, U volatile&&>());
+  static_assert(
+      !check_swappable_with_impl<T const volatile&, U const volatile&&>());
+
+  static_assert(!check_swappable_with_impl<T&&, U&>());
+  static_assert(!check_swappable_with_impl<T&&, U const&>());
+  static_assert(!check_swappable_with_impl<T&&, U volatile&>());
+  static_assert(!check_swappable_with_impl<T&&, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T const&&, U&>());
+  static_assert(!check_swappable_with_impl<T const&&, U const&>());
+  static_assert(!check_swappable_with_impl<T const&&, U volatile&>());
+  static_assert(!check_swappable_with_impl<T const&&, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U const&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U volatile&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U const volatile&>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U&>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U const&>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U volatile&>());
+  static_assert(
+      !check_swappable_with_impl<T const volatile&&, U const volatile&>());
+
+  static_assert(!check_swappable_with_impl<T&&, U&&>());
+  static_assert(!check_swappable_with_impl<T&&, U const&&>());
+  static_assert(!check_swappable_with_impl<T&&, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T&&, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T const&&, U&&>());
+  static_assert(!check_swappable_with_impl<T const&&, U const&&>());
+  static_assert(!check_swappable_with_impl<T const&&, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T const&&, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U&&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U const&&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U volatile&&>());
+  static_assert(!check_swappable_with_impl<T volatile&&, U const volatile&&>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U&&>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U const&&>());
+  static_assert(!check_swappable_with_impl<T const volatile&&, U volatile&&>());
+  static_assert(
+      !check_swappable_with_impl<T const volatile&&, U const volatile&&>());
+  return check_swappable_with_impl<T&, U&>();
+}
+
+template <class T, class U>
+constexpr bool check_swappable_with_including_lvalue_ref_to_volatile() {
+  constexpr auto result = check_swappable_with<T, U>();
+  static_assert(check_swappable_with_impl<T volatile&, U volatile&>() ==
+                result);
+  return result;
+}
+
+namespace fundamental {
+static_assert(
+    check_swappable_with_including_lvalue_ref_to_volatile<int, int>());
+static_assert(
+    check_swappable_with_including_lvalue_ref_to_volatile<double, double>());
+static_assert(
+    !check_swappable_with_including_lvalue_ref_to_volatile<int, double>());
+
+static_assert(
+    check_swappable_with_including_lvalue_ref_to_volatile<int*, int*>());
+static_assert(
+    !check_swappable_with_including_lvalue_ref_to_volatile<int, int*>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (*)(), int (*)()>());
+static_assert(
+    !check_swappable_with_including_lvalue_ref_to_volatile<int, int (*)()>());
+
+struct S {};
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<int, S>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int S::*, int S::*>());
+static_assert(
+    !check_swappable_with_including_lvalue_ref_to_volatile<int, int S::*>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)(), int (S::*)()>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int, int (S::*)()>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() noexcept, int (S::*)() noexcept>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() noexcept, int (S::*)()>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() const, int (S::*)() const>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() const, int (S::*)()>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() const noexcept, int (S::*)() const noexcept>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() const, int (S::*)() const noexcept>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() volatile, int (S::*)() volatile>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() volatile, int (S::*)()>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() const volatile, int (S::*)() const volatile>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int (S::*)() const volatile, int (S::*)()>());
+
+static_assert(
+    check_swappable_with_including_lvalue_ref_to_volatile<int[5], int[5]>());
+static_assert(
+    !check_swappable_with_including_lvalue_ref_to_volatile<int[5], int[6]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5], double[5]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5], double[6]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<int[5][6],
+                                                                     int[5]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<int[5][6],
+                                                                     int[6]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], double[5]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], double[6]>());
+static_assert(check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], int[5][6]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], int[5][4]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], int[6][5]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], double[5][6]>());
+static_assert(!check_swappable_with_including_lvalue_ref_to_volatile<
+              int[5][6], double[6][5]>());
+
+// always false
+static_assert(!check_swappable_with_impl<void, void>());
+static_assert(!check_swappable_with_impl<int, void>());
+static_assert(!check_swappable_with_impl<int&, void>());
+static_assert(!check_swappable_with_impl<void, int>());
+static_assert(!check_swappable_with_impl<void, int&>());
+static_assert(!check_swappable_with_impl<int, int()>());
+static_assert(!check_swappable_with_impl<int, int (&)()>());
+} // namespace fundamental
+
+namespace adl {
+static_assert(
+    check_swappable_with<lvalue_adl_swappable, lvalue_adl_swappable>());
+static_assert(check_swappable_with<lvalue_rvalue_adl_swappable,
+                                   lvalue_rvalue_adl_swappable>());
+static_assert(check_swappable_with<rvalue_lvalue_adl_swappable,
+                                   rvalue_lvalue_adl_swappable>());
+static_assert(
+    check_swappable_with_impl<rvalue_adl_swappable, rvalue_adl_swappable>());
+static_assert(!check_swappable_with_impl<lvalue_rvalue_adl_swappable&,
+                                         lvalue_rvalue_adl_swappable&&>());
+
+struct s1 {};
+struct no_common_reference_with_s1 {
+  friend void swap(s1&, no_common_reference_with_s1&);
+  friend void swap(no_common_reference_with_s1&, s1&);
+};
+static_assert(!check_swappable_with<s1, no_common_reference_with_s1>());
+
+struct one_way_swappable_with_s1 {
+  friend void swap(s1&, one_way_swappable_with_s1&);
+  operator s1();
+};
+static_assert(std::common_reference_with<one_way_swappable_with_s1, s1>);
+static_assert(!check_swappable_with<one_way_swappable_with_s1, s1>());
+
+struct one_way_swappable_with_s1_other_way {
+  friend void swap(one_way_swappable_with_s1_other_way&, s1&);
+  operator s1();
+};
+static_assert(
+    std::common_reference_with<one_way_swappable_with_s1_other_way, s1>);
+static_assert(!check_swappable_with<one_way_swappable_with_s1_other_way, s1>());
+
+struct can_swap_with_s1_but_not_swappable {
+  can_swap_with_s1_but_not_swappable(can_swap_with_s1_but_not_swappable&&) =
+      delete;
+  friend void swap(s1&, can_swap_with_s1_but_not_swappable&);
+  friend void swap(can_swap_with_s1_but_not_swappable&, s1&);
+
+  operator s1() const;
+};
+static_assert(
+    std::common_reference_with<can_swap_with_s1_but_not_swappable, s1>);
+static_assert(!std::swappable<can_swap_with_s1_but_not_swappable>);
+static_assert(
+    !check_swappable_with<can_swap_with_s1_but_not_swappable&, s1&>());
+
+struct swappable_with_s1 {
+  friend void swap(s1&, swappable_with_s1&);
+  friend void swap(swappable_with_s1&, s1&);
+  operator s1() const;
+};
+static_assert(check_swappable_with<swappable_with_s1, s1>());
+
+struct swappable_with_const_s1_but_not_swappable {
+  swappable_with_const_s1_but_not_swappable(
+      swappable_with_const_s1_but_not_swappable const&);
+  swappable_with_const_s1_but_not_swappable(
+      swappable_with_const_s1_but_not_swappable const&&);
+  swappable_with_const_s1_but_not_swappable&
+  operator=(swappable_with_const_s1_but_not_swappable const&);
+  swappable_with_const_s1_but_not_swappable&
+  operator=(swappable_with_const_s1_but_not_swappable const&&);
+
+  friend void swap(s1 const&, swappable_with_const_s1_but_not_swappable const&);
+  friend void swap(swappable_with_const_s1_but_not_swappable const&, s1 const&);
+
+  operator s1 const &() const;
+};
+static_assert(
+    !std::swappable<swappable_with_const_s1_but_not_swappable const&>);
+static_assert(!std::swappable_with<
+              swappable_with_const_s1_but_not_swappable const&, s1 const&>);
+
+struct swappable_with_volatile_s1_but_not_swappable {
+  swappable_with_volatile_s1_but_not_swappable(
+      swappable_with_volatile_s1_but_not_swappable volatile&);
+  swappable_with_volatile_s1_but_not_swappable(
+      swappable_with_volatile_s1_but_not_swappable volatile&&);
+  swappable_with_volatile_s1_but_not_swappable&
+  operator=(swappable_with_volatile_s1_but_not_swappable volatile&);
+  swappable_with_volatile_s1_but_not_swappable&
+  operator=(swappable_with_volatile_s1_but_not_swappable volatile&&);
+
+  friend void swap(s1 volatile&,
+                   swappable_with_volatile_s1_but_not_swappable volatile&);
+  friend void swap(swappable_with_volatile_s1_but_not_swappable volatile&,
+                   s1 volatile&);
+
+  operator s1 volatile &() volatile;
+};
+static_assert(
+    !std::swappable<swappable_with_volatile_s1_but_not_swappable volatile&>);
+static_assert(
+    !std::swappable_with<swappable_with_volatile_s1_but_not_swappable volatile&,
+                         s1 volatile&>);
+
+struct swappable_with_cv_s1_but_not_swappable {
+  swappable_with_cv_s1_but_not_swappable(
+      swappable_with_cv_s1_but_not_swappable const volatile&);
+  swappable_with_cv_s1_but_not_swappable(
+      swappable_with_cv_s1_but_not_swappable const volatile&&);
+  swappable_with_cv_s1_but_not_swappable&
+  operator=(swappable_with_cv_s1_but_not_swappable const volatile&);
+  swappable_with_cv_s1_but_not_swappable&
+  operator=(swappable_with_cv_s1_but_not_swappable const volatile&&);
+
+  friend void swap(s1 const volatile&,
+                   swappable_with_cv_s1_but_not_swappable const volatile&);
+  friend void swap(swappable_with_cv_s1_but_not_swappable const volatile&,
+                   s1 const volatile&);
+
+  operator s1 const volatile &() const volatile;
+};
+static_assert(
+    !std::swappable<swappable_with_cv_s1_but_not_swappable const volatile&>);
+static_assert(
+    !std::swappable_with<swappable_with_cv_s1_but_not_swappable const volatile&,
+                         s1 const volatile&>);
+
+struct s2 {
+  friend void swap(s2 const&, s2 const&);
+  friend void swap(s2 volatile&, s2 volatile&);
+  friend void swap(s2 const volatile&, s2 const volatile&);
+};
+
+struct swappable_with_const_s2 {
+  swappable_with_const_s2(swappable_with_const_s2 const&);
+  swappable_with_const_s2(swappable_with_const_s2 const&&);
+  swappable_with_const_s2& operator=(swappable_with_const_s2 const&);
+  swappable_with_const_s2& operator=(swappable_with_const_s2 const&&);
+
+  friend void swap(swappable_with_const_s2 const&,
+                   swappable_with_const_s2 const&);
+  friend void swap(s2 const&, swappable_with_const_s2 const&);
+  friend void swap(swappable_with_const_s2 const&, s2 const&);
+
+  operator s2 const &() const;
+};
+static_assert(std::swappable_with<swappable_with_const_s2 const&, s2 const&>);
+
+struct swappable_with_volatile_s2 {
+  swappable_with_volatile_s2(swappable_with_volatile_s2 volatile&);
+  swappable_with_volatile_s2(swappable_with_volatile_s2 volatile&&);
+  swappable_with_volatile_s2& operator=(swappable_with_volatile_s2 volatile&);
+  swappable_with_volatile_s2& operator=(swappable_with_volatile_s2 volatile&&);
+
+  friend void swap(swappable_with_volatile_s2 volatile&,
+                   swappable_with_volatile_s2 volatile&);
+  friend void swap(s2 volatile&, swappable_with_volatile_s2 volatile&);
+  friend void swap(swappable_with_volatile_s2 volatile&, s2 volatile&);
+
+  operator s2 volatile &() volatile;
+};
+static_assert(
+    std::swappable_with<swappable_with_volatile_s2 volatile&, s2 volatile&>);
+
+struct swappable_with_cv_s2 {
+  swappable_with_cv_s2(swappable_with_cv_s2 const volatile&);
+  swappable_with_cv_s2(swappable_with_cv_s2 const volatile&&);
+  swappable_with_cv_s2& operator=(swappable_with_cv_s2 const volatile&);
+  swappable_with_cv_s2& operator=(swappable_with_cv_s2 const volatile&&);
+
+  friend void swap(swappable_with_cv_s2 const volatile&,
+                   swappable_with_cv_s2 const volatile&);
+  friend void swap(s2 const volatile&, swappable_with_cv_s2 const volatile&);
+  friend void swap(swappable_with_cv_s2 const volatile&, s2 const volatile&);
+
+  operator s2 const volatile &() const volatile;
+};
+static_assert(std::swappable_with<swappable_with_cv_s2 const volatile&,
+                                  s2 const volatile&>);
+
+struct swappable_with_rvalue_ref_to_s1_but_not_swappable {
+  friend void swap(swappable_with_rvalue_ref_to_s1_but_not_swappable&&,
+                   swappable_with_rvalue_ref_to_s1_but_not_swappable&&);
+  friend void swap(s1&&, swappable_with_rvalue_ref_to_s1_but_not_swappable&&);
+  friend void swap(swappable_with_rvalue_ref_to_s1_but_not_swappable&&, s1&&);
+
+  operator s1() const;
+};
+static_assert(
+    !std::swappable<swappable_with_rvalue_ref_to_s1_but_not_swappable const&&>);
+static_assert(
+    !std::swappable_with<
+        swappable_with_rvalue_ref_to_s1_but_not_swappable const&&, s1 const&&>);
+
+struct swappable_with_rvalue_ref_to_const_s1_but_not_swappable {
+  friend void
+  swap(s1 const&&,
+       swappable_with_rvalue_ref_to_const_s1_but_not_swappable const&&);
+  friend void
+  swap(swappable_with_rvalue_ref_to_const_s1_but_not_swappable const&&,
+       s1 const&&);
+
+  operator s1 const() const;
+};
+static_assert(!std::swappable<
+              swappable_with_rvalue_ref_to_const_s1_but_not_swappable const&&>);
+static_assert(!std::swappable_with<
+              swappable_with_rvalue_ref_to_const_s1_but_not_swappable const&&,
+              s1 const&&>);
+
+struct swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable {
+  swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable(
+      swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&);
+  swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable(
+      swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&&);
+  swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable& operator=(
+      swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&);
+  swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable& operator=(
+      swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&&);
+
+  friend void
+  swap(s1 volatile&&,
+       swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&&);
+  friend void
+  swap(swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&&,
+       s1 volatile&&);
+
+  operator s1 volatile &&() volatile&&;
+};
+static_assert(
+    !std::swappable<
+        swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&&>);
+static_assert(
+    !std::swappable_with<
+        swappable_with_rvalue_ref_to_volatile_s1_but_not_swappable volatile&&,
+        s1 volatile&&>);
+
+struct swappable_with_rvalue_ref_to_cv_s1_but_not_swappable {
+  swappable_with_rvalue_ref_to_cv_s1_but_not_swappable(
+      swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&);
+  swappable_with_rvalue_ref_to_cv_s1_but_not_swappable(
+      swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&&);
+  swappable_with_rvalue_ref_to_cv_s1_but_not_swappable& operator=(
+      swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&);
+  swappable_with_rvalue_ref_to_cv_s1_but_not_swappable& operator=(
+      swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&&);
+
+  friend void
+  swap(s1 const volatile&&,
+       swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&&);
+  friend void
+  swap(swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&&,
+       s1 const volatile&&);
+
+  operator s1 const volatile &&() const volatile&&;
+};
+static_assert(
+    !std::swappable<
+        swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&&>);
+static_assert(
+    !std::swappable_with<
+        swappable_with_rvalue_ref_to_cv_s1_but_not_swappable const volatile&&,
+        s1 const volatile&&>);
+
+struct s3 {
+  friend void swap(s3&&, s3&&);
+  friend void swap(s3 const&&, s3 const&&);
+  friend void swap(s3 volatile&&, s3 volatile&&);
+  friend void swap(s3 const volatile&&, s3 const volatile&&);
+};
+
+struct swappable_with_rvalue_ref_to_s3 {
+  friend void swap(swappable_with_rvalue_ref_to_s3&&,
+                   swappable_with_rvalue_ref_to_s3&&);
+  friend void swap(s3&&, swappable_with_rvalue_ref_to_s3&&);
+  friend void swap(swappable_with_rvalue_ref_to_s3&&, s3&&);
+
+  operator s3() const;
+};
+static_assert(std::swappable_with<swappable_with_rvalue_ref_to_s3&&, s3&&>);
+
+struct swappable_with_rvalue_ref_to_const_s3 {
+  swappable_with_rvalue_ref_to_const_s3(
+      swappable_with_rvalue_ref_to_const_s3 const&);
+  swappable_with_rvalue_ref_to_const_s3(
+      swappable_with_rvalue_ref_to_const_s3 const&&);
+  swappable_with_rvalue_ref_to_const_s3&
+  operator=(swappable_with_rvalue_ref_to_const_s3 const&);
+  swappable_with_rvalue_ref_to_const_s3&
+  operator=(swappable_with_rvalue_ref_to_const_s3 const&&);
+
+  friend void swap(swappable_with_rvalue_ref_to_const_s3 const&&,
+                   swappable_with_rvalue_ref_to_const_s3 const&&);
+  friend void swap(s3 const&&, swappable_with_rvalue_ref_to_const_s3 const&&);
+  friend void swap(swappable_with_rvalue_ref_to_const_s3 const&&, s3 const&&);
+
+  operator s3() const;
+};
+static_assert(std::swappable_with<swappable_with_rvalue_ref_to_const_s3 const&&,
+                                  s3 const&&>);
+
+struct swappable_with_rvalue_ref_to_volatile_s3 {
+  swappable_with_rvalue_ref_to_volatile_s3(
+      swappable_with_rvalue_ref_to_volatile_s3 volatile&);
+  swappable_with_rvalue_ref_to_volatile_s3(
+      swappable_with_rvalue_ref_to_volatile_s3 volatile&&);
+  swappable_with_rvalue_ref_to_volatile_s3&
+  operator=(swappable_with_rvalue_ref_to_volatile_s3 volatile&);
+  swappable_with_rvalue_ref_to_volatile_s3&
+  operator=(swappable_with_rvalue_ref_to_volatile_s3 volatile&&);
+
+  friend void swap(swappable_with_rvalue_ref_to_volatile_s3 volatile&&,
+                   swappable_with_rvalue_ref_to_volatile_s3 volatile&&);
+  friend void swap(s3 volatile&&,
+                   swappable_with_rvalue_ref_to_volatile_s3 volatile&&);
+  friend void swap(swappable_with_rvalue_ref_to_volatile_s3 volatile&&,
+                   s3 volatile&&);
+
+  operator s3 volatile &&() volatile;
+};
+static_assert(
+    std::swappable_with<swappable_with_rvalue_ref_to_volatile_s3 volatile&&,
+                        s3 volatile&&>);
+
+struct swappable_with_rvalue_ref_to_cv_s3 {
+  swappable_with_rvalue_ref_to_cv_s3(
+      swappable_with_rvalue_ref_to_cv_s3 const volatile&);
+  swappable_with_rvalue_ref_to_cv_s3(
+      swappable_with_rvalue_ref_to_cv_s3 const volatile&&);
+  swappable_with_rvalue_ref_to_cv_s3&
+  operator=(swappable_with_rvalue_ref_to_cv_s3 const volatile&);
+  swappable_with_rvalue_ref_to_cv_s3&
+  operator=(swappable_with_rvalue_ref_to_cv_s3 const volatile&&);
+
+  friend void swap(swappable_with_rvalue_ref_to_cv_s3 const volatile&&,
+                   swappable_with_rvalue_ref_to_cv_s3 const volatile&&);
+  friend void swap(s3 const volatile&&,
+                   swappable_with_rvalue_ref_to_cv_s3 const volatile&&);
+  friend void swap(swappable_with_rvalue_ref_to_cv_s3 const volatile&&,
+                   s3 const volatile&&);
+
+  operator s3 const volatile &&() const volatile;
+};
+static_assert(
+    std::swappable_with<swappable_with_rvalue_ref_to_cv_s3 const volatile&&,
+                        s3 const volatile&&>);
+
+namespace union_swap {
+union adl_swappable {
+  int x;
+  double y;
+
+  operator int() const;
+};
+
+void swap(adl_swappable&, adl_swappable&) noexcept;
+void swap(adl_swappable&&, adl_swappable&&) noexcept;
+void swap(adl_swappable&, int&) noexcept;
+void swap(int&, adl_swappable&) noexcept;
+} // namespace union_swap
+static_assert(
+    std::swappable_with<union_swap::adl_swappable, union_swap::adl_swappable>);
+static_assert(std::swappable_with<union_swap::adl_swappable&,
+                                  union_swap::adl_swappable&>);
+static_assert(std::swappable_with<union_swap::adl_swappable&&,
+                                  union_swap::adl_swappable&&>);
+static_assert(std::swappable_with<union_swap::adl_swappable&, int&>);
+} // namespace adl
+
+namespace standard_types {
+static_assert(
+    check_swappable_with<std::array<int, 10>, std::array<int, 10> >());
+static_assert(
+    !check_swappable_with<std::array<int, 10>, std::array<double, 10> >());
+static_assert(check_swappable_with<std::deque<int>, std::deque<int> >());
+static_assert(!check_swappable_with<std::deque<int>, std::vector<int> >());
+static_assert(
+    check_swappable_with<std::forward_list<int>, std::forward_list<int> >());
+static_assert(
+    !check_swappable_with<std::forward_list<int>, std::vector<int> >());
+static_assert(check_swappable_with<std::list<int>, std::list<int> >());
+static_assert(!check_swappable_with<std::list<int>, std::vector<int> >());
+
+static_assert(
+    check_swappable_with<std::map<int, void*>, std::map<int, void*> >());
+static_assert(!check_swappable_with<std::map<int, void*>, std::vector<int> >());
+static_assert(check_swappable_with<std::optional<std::vector<int> >,
+                                   std::optional<std::vector<int> > >());
+static_assert(!check_swappable_with<std::optional<std::vector<int> >,
+                                    std::vector<int> >());
+static_assert(check_swappable_with<std::vector<int>, std::vector<int> >());
+static_assert(!check_swappable_with<std::vector<int>, int>());
+} // namespace standard_types
+
+namespace types_with_purpose {
+static_assert(!check_swappable_with<DeletedMoveCtor, DeletedMoveCtor>());
+static_assert(!check_swappable_with<ImplicitlyDeletedMoveCtor,
+                                    ImplicitlyDeletedMoveCtor>());
+static_assert(!check_swappable_with<DeletedMoveAssign, DeletedMoveAssign>());
+static_assert(!check_swappable_with<ImplicitlyDeletedMoveAssign,
+                                    ImplicitlyDeletedMoveAssign>());
+static_assert(!check_swappable_with<NonMovable, NonMovable>());
+static_assert(
+    !check_swappable_with<DerivedFromNonMovable, DerivedFromNonMovable>());
+static_assert(!check_swappable_with<HasANonMovable, HasANonMovable>());
+} // namespace types_with_purpose
+
+namespace LWG3175 {
+// Example taken directly from [concept.swappable]
+template <class T, std::swappable_with<T> U>
+constexpr void value_swap(T&& t, U&& u) {
+  std::ranges::swap(std::forward<T>(t), std::forward<U>(u));
+}
+
+template <std::swappable T>
+constexpr void lv_swap(T& t1, T& t2) {
+  std::ranges::swap(t1, t2);
+}
+
+namespace N {
+struct A {
+  int m;
+};
+struct Proxy {
+  A* a;
+  constexpr Proxy(A& a_) : a{&a_} {}
+  friend constexpr void swap(Proxy x, Proxy y) {
+    std::ranges::swap(*x.a, *y.a);
+  }
+};
+constexpr Proxy proxy(A& a) { return Proxy{a}; }
+} // namespace N
+
+constexpr bool CheckRegression() {
+  int i = 1, j = 2;
+  lv_swap(i, j);
+  assert(i == 2 && j == 1);
+
+  N::A a1 = {5}, a2 = {-5};
+  value_swap(a1, proxy(a2));
+  assert(a1.m == -5 && a2.m == 5);
+  return true;
+}
+
+static_assert(CheckRegression());
+} // namespace LWG3175
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/arithmetic.h b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/arithmetic.h
new file mode 100644
index 0000000..de2f539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/arithmetic.h
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_CONCEPTS_LANG_CONCEPTS_ARITHMETIC_H_
+#define LIBCXX_TEST_CONCEPTS_LANG_CONCEPTS_ARITHMETIC_H_
+
+#include <concepts>
+
+// This overload should never be called. It exists solely to force subsumption.
+template <std::integral I>
+constexpr bool CheckSubsumption(I) {
+  return false;
+}
+
+// clang-format off
+template <std::integral I>
+requires std::signed_integral<I> && (!std::unsigned_integral<I>)
+constexpr bool CheckSubsumption(I) {
+  return std::is_signed_v<I>;
+}
+
+template <std::integral I>
+requires std::unsigned_integral<I> && (!std::signed_integral<I>)
+constexpr bool CheckSubsumption(I) {
+  return std::is_unsigned_v<I>;
+}
+// clang-format on
+
+enum ClassicEnum { a, b, c };
+enum class ScopedEnum { x, y, z };
+struct EmptyStruct {};
+
+#endif // LIBCXX_TEST_CONCEPTS_LANG_CONCEPTS_ARITHMETIC_H_
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/floating_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/floating_point.pass.cpp
new file mode 100644
index 0000000..20efed4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/floating_point.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept floating_point = // see below
+
+#include <concepts>
+#include <type_traits>
+
+#include "arithmetic.h"
+
+template <typename T>
+constexpr bool CheckFloatingPointQualifiers() {
+  constexpr bool result = std::floating_point<T>;
+  static_assert(std::floating_point<const T> == result);
+  static_assert(std::floating_point<volatile T> == result);
+  static_assert(std::floating_point<const volatile T> == result);
+
+  static_assert(!std::floating_point<T&>);
+  static_assert(!std::floating_point<const T&>);
+  static_assert(!std::floating_point<volatile T&>);
+  static_assert(!std::floating_point<const volatile T&>);
+
+  static_assert(!std::floating_point<T&&>);
+  static_assert(!std::floating_point<const T&&>);
+  static_assert(!std::floating_point<volatile T&&>);
+  static_assert(!std::floating_point<const volatile T&&>);
+
+  static_assert(!std::floating_point<T*>);
+  static_assert(!std::floating_point<const T*>);
+  static_assert(!std::floating_point<volatile T*>);
+  static_assert(!std::floating_point<const volatile T*>);
+
+  static_assert(!std::floating_point<T (*)()>);
+  static_assert(!std::floating_point<T (&)()>);
+  static_assert(!std::floating_point<T(&&)()>);
+
+  return result;
+}
+
+// floating-point types
+static_assert(CheckFloatingPointQualifiers<float>());
+static_assert(CheckFloatingPointQualifiers<double>());
+static_assert(CheckFloatingPointQualifiers<long double>());
+
+// types that aren't floating-point
+static_assert(!CheckFloatingPointQualifiers<signed char>());
+static_assert(!CheckFloatingPointQualifiers<unsigned char>());
+static_assert(!CheckFloatingPointQualifiers<short>());
+static_assert(!CheckFloatingPointQualifiers<unsigned short>());
+static_assert(!CheckFloatingPointQualifiers<int>());
+static_assert(!CheckFloatingPointQualifiers<unsigned int>());
+static_assert(!CheckFloatingPointQualifiers<long>());
+static_assert(!CheckFloatingPointQualifiers<unsigned long>());
+static_assert(!CheckFloatingPointQualifiers<long long>());
+static_assert(!CheckFloatingPointQualifiers<unsigned long long>());
+static_assert(!CheckFloatingPointQualifiers<wchar_t>());
+static_assert(!CheckFloatingPointQualifiers<bool>());
+static_assert(!CheckFloatingPointQualifiers<char>());
+static_assert(!CheckFloatingPointQualifiers<char8_t>());
+static_assert(!CheckFloatingPointQualifiers<char16_t>());
+static_assert(!CheckFloatingPointQualifiers<char32_t>());
+static_assert(!std::floating_point<void>);
+
+static_assert(!CheckFloatingPointQualifiers<ClassicEnum>());
+static_assert(!CheckFloatingPointQualifiers<ScopedEnum>());
+static_assert(!CheckFloatingPointQualifiers<EmptyStruct>());
+static_assert(!CheckFloatingPointQualifiers<int EmptyStruct::*>());
+static_assert(!CheckFloatingPointQualifiers<int (EmptyStruct::*)()>());
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/integral.pass.cpp
new file mode 100644
index 0000000..f40aed1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/integral.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept integral = // see below
+
+#include <concepts>
+#include <type_traits>
+
+#include "arithmetic.h"
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool CheckIntegralQualifiers() {
+  constexpr bool result = std::integral<T>;
+  static_assert(std::integral<const T> == result);
+  static_assert(std::integral<volatile T> == result);
+  static_assert(std::integral<const volatile T> == result);
+
+  static_assert(!std::integral<T&>);
+  static_assert(!std::integral<const T&>);
+  static_assert(!std::integral<volatile T&>);
+  static_assert(!std::integral<const volatile T&>);
+
+  static_assert(!std::integral<T&&>);
+  static_assert(!std::integral<const T&&>);
+  static_assert(!std::integral<volatile T&&>);
+  static_assert(!std::integral<const volatile T&&>);
+
+  static_assert(!std::integral<T*>);
+  static_assert(!std::integral<const T*>);
+  static_assert(!std::integral<volatile T*>);
+  static_assert(!std::integral<const volatile T*>);
+
+  static_assert(!std::integral<T (*)()>);
+  static_assert(!std::integral<T (&)()>);
+  static_assert(!std::integral<T(&&)()>);
+
+  return result;
+}
+
+// standard signed and unsigned integers
+static_assert(CheckIntegralQualifiers<signed char>());
+static_assert(CheckIntegralQualifiers<unsigned char>());
+static_assert(CheckIntegralQualifiers<short>());
+static_assert(CheckIntegralQualifiers<unsigned short>());
+static_assert(CheckIntegralQualifiers<int>());
+static_assert(CheckIntegralQualifiers<unsigned int>());
+static_assert(CheckIntegralQualifiers<long>());
+static_assert(CheckIntegralQualifiers<unsigned long>());
+static_assert(CheckIntegralQualifiers<long long>());
+static_assert(CheckIntegralQualifiers<unsigned long long>());
+
+// extended integers
+#ifndef TEST_HAS_NO_INT128
+static_assert(CheckIntegralQualifiers<__int128_t>());
+static_assert(CheckIntegralQualifiers<__uint128_t>());
+#endif
+
+// bool and char types are also integral
+static_assert(CheckIntegralQualifiers<wchar_t>());
+static_assert(CheckIntegralQualifiers<bool>());
+static_assert(CheckIntegralQualifiers<char>());
+static_assert(CheckIntegralQualifiers<char8_t>());
+static_assert(CheckIntegralQualifiers<char16_t>());
+static_assert(CheckIntegralQualifiers<char32_t>());
+
+// types that aren't integral
+static_assert(!std::integral<void>);
+static_assert(!CheckIntegralQualifiers<float>());
+static_assert(!CheckIntegralQualifiers<double>());
+static_assert(!CheckIntegralQualifiers<long double>());
+
+static_assert(!CheckIntegralQualifiers<ClassicEnum>());
+
+static_assert(!CheckIntegralQualifiers<ScopedEnum>());
+
+static_assert(!CheckIntegralQualifiers<EmptyStruct>());
+static_assert(!CheckIntegralQualifiers<int EmptyStruct::*>());
+static_assert(!CheckIntegralQualifiers<int (EmptyStruct::*)()>());
+
+static_assert(CheckSubsumption(0));
+static_assert(CheckSubsumption(0U));
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/signed_integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/signed_integral.pass.cpp
new file mode 100644
index 0000000..c1f4717
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/signed_integral.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept signed_integral = // see below
+
+#include <concepts>
+#include <type_traits>
+
+#include "arithmetic.h"
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool CheckSignedIntegralQualifiers() {
+  constexpr bool result = std::signed_integral<T>;
+  static_assert(std::signed_integral<const T> == result);
+  static_assert(std::signed_integral<volatile T> == result);
+  static_assert(std::signed_integral<const volatile T> == result);
+
+  static_assert(!std::signed_integral<T&>);
+  static_assert(!std::signed_integral<const T&>);
+  static_assert(!std::signed_integral<volatile T&>);
+  static_assert(!std::signed_integral<const volatile T&>);
+
+  static_assert(!std::signed_integral<T&&>);
+  static_assert(!std::signed_integral<const T&&>);
+  static_assert(!std::signed_integral<volatile T&&>);
+  static_assert(!std::signed_integral<const volatile T&&>);
+
+  static_assert(!std::signed_integral<T*>);
+  static_assert(!std::signed_integral<const T*>);
+  static_assert(!std::signed_integral<volatile T*>);
+  static_assert(!std::signed_integral<const volatile T*>);
+
+  static_assert(!std::signed_integral<T (*)()>);
+  static_assert(!std::signed_integral<T (&)()>);
+  static_assert(!std::signed_integral<T(&&)()>);
+
+  return result;
+}
+
+// standard signed integers
+static_assert(CheckSignedIntegralQualifiers<signed char>());
+static_assert(CheckSignedIntegralQualifiers<short>());
+static_assert(CheckSignedIntegralQualifiers<int>());
+static_assert(CheckSignedIntegralQualifiers<long>());
+static_assert(CheckSignedIntegralQualifiers<long long>());
+
+// bool and character *may* be signed
+static_assert(CheckSignedIntegralQualifiers<wchar_t>() ==
+              std::is_signed_v<wchar_t>);
+static_assert(CheckSignedIntegralQualifiers<bool>() == std::is_signed_v<bool>);
+static_assert(CheckSignedIntegralQualifiers<char>() == std::is_signed_v<char>);
+static_assert(CheckSignedIntegralQualifiers<char8_t>() ==
+              std::is_signed_v<char8_t>);
+static_assert(CheckSignedIntegralQualifiers<char16_t>() ==
+              std::is_signed_v<char16_t>);
+static_assert(CheckSignedIntegralQualifiers<char32_t>() ==
+              std::is_signed_v<char32_t>);
+
+// integers that aren't signed integrals
+static_assert(!CheckSignedIntegralQualifiers<unsigned char>());
+static_assert(!CheckSignedIntegralQualifiers<unsigned short>());
+static_assert(!CheckSignedIntegralQualifiers<unsigned int>());
+static_assert(!CheckSignedIntegralQualifiers<unsigned long>());
+static_assert(!CheckSignedIntegralQualifiers<unsigned long long>());
+
+// extended integers
+#ifndef TEST_HAS_NO_INT128
+static_assert(CheckSignedIntegralQualifiers<__int128_t>());
+static_assert(!CheckSignedIntegralQualifiers<__uint128_t>());
+#endif
+
+// types that aren't even integers shouldn't be signed integers!
+static_assert(!std::signed_integral<void>);
+static_assert(!CheckSignedIntegralQualifiers<float>());
+static_assert(!CheckSignedIntegralQualifiers<double>());
+static_assert(!CheckSignedIntegralQualifiers<long double>());
+
+static_assert(!CheckSignedIntegralQualifiers<ClassicEnum>());
+static_assert(!CheckSignedIntegralQualifiers<ScopedEnum>());
+static_assert(!CheckSignedIntegralQualifiers<EmptyStruct>());
+static_assert(!CheckSignedIntegralQualifiers<int EmptyStruct::*>());
+static_assert(!CheckSignedIntegralQualifiers<int (EmptyStruct::*)()>());
+
+static_assert(CheckSubsumption(0));
+static_assert(CheckSubsumption(0U));
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/unsigned_integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/unsigned_integral.pass.cpp
new file mode 100644
index 0000000..b899416
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.lang/concepts.arithmetic/unsigned_integral.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept unsigned_integral = // see below
+
+#include <concepts>
+#include <type_traits>
+
+#include "arithmetic.h"
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool CheckUnsignedIntegralQualifiers() {
+  constexpr bool result = std::unsigned_integral<T>;
+  static_assert(std::unsigned_integral<const T> == result);
+  static_assert(std::unsigned_integral<volatile T> == result);
+  static_assert(std::unsigned_integral<const volatile T> == result);
+
+  static_assert(!std::unsigned_integral<T&>);
+  static_assert(!std::unsigned_integral<const T&>);
+  static_assert(!std::unsigned_integral<volatile T&>);
+  static_assert(!std::unsigned_integral<const volatile T&>);
+
+  static_assert(!std::unsigned_integral<T&&>);
+  static_assert(!std::unsigned_integral<const T&&>);
+  static_assert(!std::unsigned_integral<volatile T&&>);
+  static_assert(!std::unsigned_integral<const volatile T&&>);
+
+  static_assert(!std::unsigned_integral<T*>);
+  static_assert(!std::unsigned_integral<const T*>);
+  static_assert(!std::unsigned_integral<volatile T*>);
+  static_assert(!std::unsigned_integral<const volatile T*>);
+
+  static_assert(!std::unsigned_integral<T (*)()>);
+  static_assert(!std::unsigned_integral<T (&)()>);
+  static_assert(!std::unsigned_integral<T(&&)()>);
+
+  return result;
+}
+
+// standard unsigned types
+static_assert(CheckUnsignedIntegralQualifiers<unsigned char>());
+static_assert(CheckUnsignedIntegralQualifiers<unsigned short>());
+static_assert(CheckUnsignedIntegralQualifiers<unsigned int>());
+static_assert(CheckUnsignedIntegralQualifiers<unsigned long>());
+static_assert(CheckUnsignedIntegralQualifiers<unsigned long long>());
+
+// Whether bool and character types are signed or unsigned is impl-defined
+static_assert(CheckUnsignedIntegralQualifiers<wchar_t>() ==
+              !std::is_signed_v<wchar_t>);
+static_assert(CheckUnsignedIntegralQualifiers<bool>() ==
+              !std::is_signed_v<bool>);
+static_assert(CheckUnsignedIntegralQualifiers<char>() ==
+              !std::is_signed_v<char>);
+static_assert(CheckUnsignedIntegralQualifiers<char8_t>() ==
+              !std::is_signed_v<char8_t>);
+static_assert(CheckUnsignedIntegralQualifiers<char16_t>() ==
+              !std::is_signed_v<char16_t>);
+static_assert(CheckUnsignedIntegralQualifiers<char32_t>() ==
+              !std::is_signed_v<char32_t>);
+
+// extended integers
+#ifndef TEST_HAS_NO_INT128
+static_assert(CheckUnsignedIntegralQualifiers<__uint128_t>());
+static_assert(!CheckUnsignedIntegralQualifiers<__int128_t>());
+#endif
+
+// integer types that aren't unsigned integrals
+static_assert(!CheckUnsignedIntegralQualifiers<signed char>());
+static_assert(!CheckUnsignedIntegralQualifiers<short>());
+static_assert(!CheckUnsignedIntegralQualifiers<int>());
+static_assert(!CheckUnsignedIntegralQualifiers<long>());
+static_assert(!CheckUnsignedIntegralQualifiers<long long>());
+
+static_assert(!std::unsigned_integral<void>);
+static_assert(!CheckUnsignedIntegralQualifiers<float>());
+static_assert(!CheckUnsignedIntegralQualifiers<double>());
+static_assert(!CheckUnsignedIntegralQualifiers<long double>());
+
+static_assert(!CheckUnsignedIntegralQualifiers<ClassicEnum>());
+static_assert(!CheckUnsignedIntegralQualifiers<ScopedEnum>());
+static_assert(!CheckUnsignedIntegralQualifiers<EmptyStruct>());
+static_assert(!CheckUnsignedIntegralQualifiers<int EmptyStruct::*>());
+static_assert(!CheckUnsignedIntegralQualifiers<int (EmptyStruct::*)()>());
+
+static_assert(CheckSubsumption(0));
+static_assert(CheckSubsumption(0U));
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/copyable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/copyable.compile.pass.cpp
new file mode 100644
index 0000000..a92b6c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/copyable.compile.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept copyable = see below;
+
+#include <concepts>
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <unordered_map>
+#include <vector>
+
+#include "type_classification/copyable.h"
+
+static_assert(std::copyable<int>);
+static_assert(std::copyable<int volatile>);
+static_assert(std::copyable<int*>);
+static_assert(std::copyable<int const*>);
+static_assert(std::copyable<int volatile*>);
+static_assert(std::copyable<int volatile const*>);
+static_assert(std::copyable<int (*)()>);
+
+struct S {};
+static_assert(std::copyable<S>);
+static_assert(std::copyable<int S::*>);
+static_assert(std::copyable<int (S::*)()>);
+static_assert(std::copyable<int (S::*)() noexcept>);
+static_assert(std::copyable<int (S::*)() &>);
+static_assert(std::copyable<int (S::*)() & noexcept>);
+static_assert(std::copyable<int (S::*)() &&>);
+static_assert(std::copyable<int (S::*)() && noexcept>);
+static_assert(std::copyable<int (S::*)() const>);
+static_assert(std::copyable<int (S::*)() const noexcept>);
+static_assert(std::copyable<int (S::*)() const&>);
+static_assert(std::copyable<int (S::*)() const & noexcept>);
+static_assert(std::copyable<int (S::*)() const&&>);
+static_assert(std::copyable<int (S::*)() const && noexcept>);
+static_assert(std::copyable<int (S::*)() volatile>);
+static_assert(std::copyable<int (S::*)() volatile noexcept>);
+static_assert(std::copyable<int (S::*)() volatile&>);
+static_assert(std::copyable<int (S::*)() volatile & noexcept>);
+static_assert(std::copyable<int (S::*)() volatile&&>);
+static_assert(std::copyable<int (S::*)() volatile && noexcept>);
+static_assert(std::copyable<int (S::*)() const volatile>);
+static_assert(std::copyable<int (S::*)() const volatile noexcept>);
+static_assert(std::copyable<int (S::*)() const volatile&>);
+static_assert(std::copyable<int (S::*)() const volatile & noexcept>);
+static_assert(std::copyable<int (S::*)() const volatile&&>);
+static_assert(std::copyable<int (S::*)() const volatile && noexcept>);
+
+static_assert(std::copyable<std::vector<int> >);
+static_assert(std::copyable<std::deque<int> >);
+static_assert(std::copyable<std::forward_list<int> >);
+static_assert(std::copyable<std::list<int> >);
+static_assert(std::copyable<std::shared_ptr<std::unique_ptr<int> > >);
+static_assert(std::copyable<std::optional<std::vector<int> > >);
+static_assert(std::copyable<std::vector<int> >);
+static_assert(std::copyable<std::vector<std::unique_ptr<int> > >);
+
+static_assert(std::copyable<has_volatile_member>);
+static_assert(std::copyable<has_array_member>);
+
+// Not objects
+static_assert(!std::copyable<void>);
+static_assert(!std::copyable<int&>);
+static_assert(!std::copyable<int const&>);
+static_assert(!std::copyable<int volatile&>);
+static_assert(!std::copyable<int const volatile&>);
+static_assert(!std::copyable<int&&>);
+static_assert(!std::copyable<int const&&>);
+static_assert(!std::copyable<int volatile&&>);
+static_assert(!std::copyable<int const volatile&&>);
+static_assert(!std::copyable<int()>);
+static_assert(!std::copyable<int (&)()>);
+static_assert(!std::copyable<int[5]>);
+
+// Not copy constructible or copy assignable
+static_assert(!std::copyable<std::unique_ptr<int> >);
+
+// Not assignable
+static_assert(!std::copyable<int const>);
+static_assert(!std::copyable<int const volatile>);
+static_assert(std::copyable<const_copy_assignment const>);
+static_assert(!std::copyable<volatile_copy_assignment volatile>);
+static_assert(std::copyable<cv_copy_assignment const volatile>);
+
+static_assert(!std::copyable<no_copy_constructor>);
+static_assert(!std::copyable<no_copy_assignment>);
+
+static_assert(std::is_copy_assignable_v<no_copy_assignment_mutable>);
+static_assert(!std::copyable<no_copy_assignment_mutable>);
+static_assert(!std::copyable<derived_from_noncopyable>);
+static_assert(!std::copyable<has_noncopyable>);
+static_assert(!std::copyable<has_const_member>);
+static_assert(!std::copyable<has_cv_member>);
+static_assert(!std::copyable<has_lvalue_reference_member>);
+static_assert(!std::copyable<has_rvalue_reference_member>);
+static_assert(!std::copyable<has_function_ref_member>);
+
+static_assert(
+    !std::assignable_from<deleted_assignment_from_const_rvalue&,
+                          deleted_assignment_from_const_rvalue const>);
+static_assert(!std::copyable<deleted_assignment_from_const_rvalue>);
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/movable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/movable.compile.pass.cpp
new file mode 100644
index 0000000..c5879be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/movable.compile.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept movable = see below;
+
+#include <concepts>
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <optional>
+#include <unordered_map>
+#include <vector>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_THREADS
+#  include <mutex>
+#endif
+
+#include "type_classification/moveconstructible.h"
+#include "type_classification/movable.h"
+
+// Movable types
+static_assert(std::movable<int>);
+static_assert(std::movable<int volatile>);
+static_assert(std::movable<int*>);
+static_assert(std::movable<int const*>);
+static_assert(std::movable<int volatile*>);
+static_assert(std::movable<int const volatile*>);
+static_assert(std::movable<int (*)()>);
+
+struct S {};
+static_assert(std::movable<S>);
+static_assert(std::movable<int S::*>);
+static_assert(std::movable<int (S::*)()>);
+static_assert(std::movable<int (S::*)() noexcept>);
+static_assert(std::movable<int (S::*)() &>);
+static_assert(std::movable<int (S::*)() & noexcept>);
+static_assert(std::movable<int (S::*)() &&>);
+static_assert(std::movable<int (S::*)() && noexcept>);
+static_assert(std::movable<int (S::*)() const>);
+static_assert(std::movable<int (S::*)() const noexcept>);
+static_assert(std::movable<int (S::*)() const&>);
+static_assert(std::movable<int (S::*)() const & noexcept>);
+static_assert(std::movable<int (S::*)() const&&>);
+static_assert(std::movable<int (S::*)() const && noexcept>);
+static_assert(std::movable<int (S::*)() volatile>);
+static_assert(std::movable<int (S::*)() volatile noexcept>);
+static_assert(std::movable<int (S::*)() volatile&>);
+static_assert(std::movable<int (S::*)() volatile & noexcept>);
+static_assert(std::movable<int (S::*)() volatile&&>);
+static_assert(std::movable<int (S::*)() volatile && noexcept>);
+static_assert(std::movable<int (S::*)() const volatile>);
+static_assert(std::movable<int (S::*)() const volatile noexcept>);
+static_assert(std::movable<int (S::*)() const volatile&>);
+static_assert(std::movable<int (S::*)() const volatile & noexcept>);
+static_assert(std::movable<int (S::*)() const volatile&&>);
+static_assert(std::movable<int (S::*)() const volatile && noexcept>);
+
+static_assert(std::movable<std::deque<int> >);
+static_assert(std::movable<std::forward_list<int> >);
+static_assert(std::movable<std::list<int> >);
+static_assert(std::movable<std::optional<std::vector<int> > >);
+static_assert(std::movable<std::vector<int> >);
+
+static_assert(std::movable<has_volatile_member>);
+static_assert(std::movable<has_array_member>);
+
+// Not objects
+static_assert(!std::movable<int&>);
+static_assert(!std::movable<int const&>);
+static_assert(!std::movable<int volatile&>);
+static_assert(!std::movable<int const volatile&>);
+static_assert(!std::movable<int&&>);
+static_assert(!std::movable<int const&&>);
+static_assert(!std::movable<int volatile&&>);
+static_assert(!std::movable<int const volatile&&>);
+static_assert(!std::movable<int()>);
+static_assert(!std::movable<int (&)()>);
+static_assert(!std::movable<int[5]>);
+
+// Core non-move assignable.
+static_assert(!std::movable<int const>);
+static_assert(!std::movable<int const volatile>);
+
+static_assert(!std::movable<DeletedMoveCtor>);
+static_assert(!std::movable<ImplicitlyDeletedMoveCtor>);
+static_assert(!std::movable<DeletedMoveAssign>);
+static_assert(!std::movable<ImplicitlyDeletedMoveAssign>);
+static_assert(!std::movable<NonMovable>);
+static_assert(!std::movable<DerivedFromNonMovable>);
+static_assert(!std::movable<HasANonMovable>);
+
+static_assert(std::movable<cpp03_friendly>);
+static_assert(std::movable<const_move_ctor>);
+static_assert(std::movable<volatile_move_ctor>);
+static_assert(std::movable<cv_move_ctor>);
+static_assert(std::movable<multi_param_move_ctor>);
+static_assert(!std::movable<not_quite_multi_param_move_ctor>);
+
+static_assert(!std::assignable_from<copy_with_mutable_parameter&,
+                                    copy_with_mutable_parameter>);
+static_assert(!std::movable<copy_with_mutable_parameter>);
+
+static_assert(!std::movable<const_move_assignment>);
+static_assert(std::movable<volatile_move_assignment>);
+static_assert(!std::movable<cv_move_assignment>);
+
+static_assert(!std::movable<const_move_assign_and_traditional_move_assign>);
+static_assert(!std::movable<volatile_move_assign_and_traditional_move_assign>);
+static_assert(!std::movable<cv_move_assign_and_traditional_move_assign>);
+static_assert(std::movable<const_move_assign_and_default_ops>);
+static_assert(std::movable<volatile_move_assign_and_default_ops>);
+static_assert(std::movable<cv_move_assign_and_default_ops>);
+
+static_assert(!std::movable<has_const_member>);
+static_assert(!std::movable<has_cv_member>);
+static_assert(!std::movable<has_lvalue_reference_member>);
+static_assert(!std::movable<has_rvalue_reference_member>);
+static_assert(!std::movable<has_function_ref_member>);
+
+static_assert(std::movable<deleted_assignment_from_const_rvalue>);
+
+// `move_constructible and assignable_from<T&, T>` implies `swappable<T>`,
+// so there's nothing to test for the case of non-swappable.
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/regular.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/regular.compile.pass.cpp
new file mode 100644
index 0000000..b1a1709
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/regular.compile.pass.cpp
@@ -0,0 +1,167 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept regular = see below;
+
+#include <concepts>
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <stdexcept>
+#include <tuple>
+#include <unordered_map>
+#include <vector>
+
+#include "type_classification/moveconstructible.h"
+#include "type_classification/semiregular.h"
+
+static_assert(std::regular<int>);
+static_assert(std::regular<float>);
+static_assert(std::regular<double>);
+static_assert(std::regular<long double>);
+static_assert(std::regular<int volatile>);
+static_assert(std::regular<void*>);
+static_assert(std::regular<int*>);
+static_assert(std::regular<int const*>);
+static_assert(std::regular<int volatile*>);
+static_assert(std::regular<int volatile const*>);
+static_assert(std::regular<int (*)()>);
+
+struct S {};
+static_assert(!std::regular<S>);
+static_assert(std::regular<int S::*>);
+static_assert(std::regular<int (S::*)()>);
+static_assert(std::regular<int (S::*)() noexcept>);
+static_assert(std::regular<int (S::*)() &>);
+static_assert(std::regular<int (S::*)() & noexcept>);
+static_assert(std::regular<int (S::*)() &&>);
+static_assert(std::regular<int (S::*)() && noexcept>);
+static_assert(std::regular<int (S::*)() const>);
+static_assert(std::regular<int (S::*)() const noexcept>);
+static_assert(std::regular<int (S::*)() const&>);
+static_assert(std::regular<int (S::*)() const & noexcept>);
+static_assert(std::regular<int (S::*)() const&&>);
+static_assert(std::regular<int (S::*)() const && noexcept>);
+static_assert(std::regular<int (S::*)() volatile>);
+static_assert(std::regular<int (S::*)() volatile noexcept>);
+static_assert(std::regular<int (S::*)() volatile&>);
+static_assert(std::regular<int (S::*)() volatile & noexcept>);
+static_assert(std::regular<int (S::*)() volatile&&>);
+static_assert(std::regular<int (S::*)() volatile && noexcept>);
+static_assert(std::regular<int (S::*)() const volatile>);
+static_assert(std::regular<int (S::*)() const volatile noexcept>);
+static_assert(std::regular<int (S::*)() const volatile&>);
+static_assert(std::regular<int (S::*)() const volatile & noexcept>);
+static_assert(std::regular<int (S::*)() const volatile&&>);
+static_assert(std::regular<int (S::*)() const volatile && noexcept>);
+
+union U {};
+static_assert(!std::regular<U>);
+static_assert(std::regular<int U::*>);
+static_assert(std::regular<int (U::*)()>);
+static_assert(std::regular<int (U::*)() noexcept>);
+static_assert(std::regular<int (U::*)() &>);
+static_assert(std::regular<int (U::*)() & noexcept>);
+static_assert(std::regular<int (U::*)() &&>);
+static_assert(std::regular<int (U::*)() && noexcept>);
+static_assert(std::regular<int (U::*)() const>);
+static_assert(std::regular<int (U::*)() const noexcept>);
+static_assert(std::regular<int (U::*)() const&>);
+static_assert(std::regular<int (U::*)() const & noexcept>);
+static_assert(std::regular<int (U::*)() const&&>);
+static_assert(std::regular<int (U::*)() const && noexcept>);
+static_assert(std::regular<int (U::*)() volatile>);
+static_assert(std::regular<int (U::*)() volatile noexcept>);
+static_assert(std::regular<int (U::*)() volatile&>);
+static_assert(std::regular<int (U::*)() volatile & noexcept>);
+static_assert(std::regular<int (U::*)() volatile&&>);
+static_assert(std::regular<int (U::*)() volatile && noexcept>);
+static_assert(std::regular<int (U::*)() const volatile>);
+static_assert(std::regular<int (U::*)() const volatile noexcept>);
+static_assert(std::regular<int (U::*)() const volatile&>);
+static_assert(std::regular<int (U::*)() const volatile & noexcept>);
+static_assert(std::regular<int (U::*)() const volatile&&>);
+static_assert(std::regular<int (U::*)() const volatile && noexcept>);
+
+static_assert(std::regular<std::vector<int> >);
+static_assert(std::regular<std::deque<int> >);
+static_assert(std::regular<std::forward_list<int> >);
+static_assert(std::regular<std::list<int> >);
+static_assert(std::regular<std::shared_ptr<std::unique_ptr<int> > >);
+static_assert(std::regular<std::optional<std::vector<int> > >);
+static_assert(std::regular<std::vector<int> >);
+static_assert(std::regular<std::vector<std::unique_ptr<int> > >);
+static_assert(std::semiregular<std::in_place_t> &&
+              !std::regular<std::in_place_t>);
+
+static_assert(!std::regular<has_volatile_member>);
+static_assert(!std::regular<has_array_member>);
+
+// Not objects
+static_assert(!std::regular<void>);
+static_assert(!std::regular<int&>);
+static_assert(!std::regular<int const&>);
+static_assert(!std::regular<int volatile&>);
+static_assert(!std::regular<int const volatile&>);
+static_assert(!std::regular<int&&>);
+static_assert(!std::regular<int const&&>);
+static_assert(!std::regular<int volatile&&>);
+static_assert(!std::regular<int const volatile&&>);
+static_assert(!std::regular<int()>);
+static_assert(!std::regular<int (&)()>);
+static_assert(!std::regular<int[5]>);
+
+// not copyable
+static_assert(!std::regular<std::unique_ptr<int> >);
+static_assert(!std::regular<int const>);
+static_assert(!std::regular<int const volatile>);
+static_assert(!std::regular<volatile_copy_assignment volatile>);
+static_assert(!std::regular<no_copy_constructor>);
+static_assert(!std::regular<no_copy_assignment>);
+static_assert(!std::regular<no_copy_assignment_mutable>);
+static_assert(!std::regular<derived_from_noncopyable>);
+static_assert(!std::regular<has_noncopyable>);
+static_assert(!std::regular<has_const_member>);
+static_assert(!std::regular<has_cv_member>);
+static_assert(!std::regular<has_lvalue_reference_member>);
+static_assert(!std::regular<has_rvalue_reference_member>);
+static_assert(!std::regular<has_function_ref_member>);
+static_assert(!std::regular<deleted_assignment_from_const_rvalue>);
+
+// not default_initializable
+static_assert(!std::regular<std::runtime_error>);
+static_assert(
+    !std::regular<std::tuple<std::runtime_error, std::overflow_error> >);
+static_assert(!std::regular<std::nullopt_t>);
+static_assert(!std::regular<no_copy_constructor>);
+static_assert(!std::regular<no_copy_assignment>);
+static_assert(std::is_copy_assignable_v<no_copy_assignment_mutable> &&
+              !std::regular<no_copy_assignment_mutable>);
+static_assert(!std::regular<derived_from_noncopyable>);
+static_assert(!std::regular<has_noncopyable>);
+
+static_assert(!std::regular<derived_from_non_default_initializable>);
+static_assert(!std::regular<has_non_default_initializable>);
+
+// not equality_comparable
+static_assert(!std::regular<const_copy_assignment const>);
+static_assert(!std::regular<cv_copy_assignment const volatile>);
+
+struct is_equality_comparable {
+  bool operator==(is_equality_comparable const&) const = default;
+};
+static_assert(std::regular<is_equality_comparable>);
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/semiregular.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/semiregular.compile.pass.cpp
new file mode 100644
index 0000000..fed5f03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/concepts/concepts.object/semiregular.compile.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept semiregular = see below;
+
+#include <concepts>
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <stdexcept>
+#include <tuple>
+#include <unordered_map>
+#include <vector>
+
+#include "type_classification/semiregular.h"
+
+static_assert(std::semiregular<int>);
+static_assert(std::semiregular<int volatile>);
+static_assert(std::semiregular<int*>);
+static_assert(std::semiregular<int const*>);
+static_assert(std::semiregular<int volatile*>);
+static_assert(std::semiregular<int volatile const*>);
+static_assert(std::semiregular<int (*)()>);
+
+struct S {};
+static_assert(std::semiregular<S>);
+static_assert(std::semiregular<int S::*>);
+static_assert(std::semiregular<int (S::*)()>);
+static_assert(std::semiregular<int (S::*)() noexcept>);
+static_assert(std::semiregular<int (S::*)() &>);
+static_assert(std::semiregular<int (S::*)() & noexcept>);
+static_assert(std::semiregular<int (S::*)() &&>);
+static_assert(std::semiregular<int (S::*)() && noexcept>);
+static_assert(std::semiregular<int (S::*)() const>);
+static_assert(std::semiregular<int (S::*)() const noexcept>);
+static_assert(std::semiregular<int (S::*)() const&>);
+static_assert(std::semiregular<int (S::*)() const & noexcept>);
+static_assert(std::semiregular<int (S::*)() const&&>);
+static_assert(std::semiregular<int (S::*)() const && noexcept>);
+static_assert(std::semiregular<int (S::*)() volatile>);
+static_assert(std::semiregular<int (S::*)() volatile noexcept>);
+static_assert(std::semiregular<int (S::*)() volatile&>);
+static_assert(std::semiregular<int (S::*)() volatile & noexcept>);
+static_assert(std::semiregular<int (S::*)() volatile&&>);
+static_assert(std::semiregular<int (S::*)() volatile && noexcept>);
+static_assert(std::semiregular<int (S::*)() const volatile>);
+static_assert(std::semiregular<int (S::*)() const volatile noexcept>);
+static_assert(std::semiregular<int (S::*)() const volatile&>);
+static_assert(std::semiregular<int (S::*)() const volatile & noexcept>);
+static_assert(std::semiregular<int (S::*)() const volatile&&>);
+static_assert(std::semiregular<int (S::*)() const volatile && noexcept>);
+
+static_assert(std::semiregular<std::vector<int> >);
+static_assert(std::semiregular<std::deque<int> >);
+static_assert(std::semiregular<std::forward_list<int> >);
+static_assert(std::semiregular<std::list<int> >);
+static_assert(std::semiregular<std::shared_ptr<std::unique_ptr<int> > >);
+static_assert(std::semiregular<std::optional<std::vector<int> > >);
+static_assert(std::semiregular<std::vector<int> >);
+static_assert(std::semiregular<std::vector<std::unique_ptr<int> > >);
+
+static_assert(std::semiregular<has_volatile_member>);
+static_assert(std::semiregular<has_array_member>);
+
+// Not objects
+static_assert(!std::semiregular<void>);
+static_assert(!std::semiregular<int&>);
+static_assert(!std::semiregular<int const&>);
+static_assert(!std::semiregular<int volatile&>);
+static_assert(!std::semiregular<int const volatile&>);
+static_assert(!std::semiregular<int&&>);
+static_assert(!std::semiregular<int const&&>);
+static_assert(!std::semiregular<int volatile&&>);
+static_assert(!std::semiregular<int const volatile&&>);
+static_assert(!std::semiregular<int()>);
+static_assert(!std::semiregular<int (&)()>);
+static_assert(!std::semiregular<int[5]>);
+
+// Not copyable
+static_assert(!std::semiregular<std::unique_ptr<int> >);
+static_assert(!std::semiregular<int const>);
+static_assert(!std::semiregular<int const volatile>);
+static_assert(std::semiregular<const_copy_assignment const>);
+static_assert(!std::semiregular<volatile_copy_assignment volatile>);
+static_assert(std::semiregular<cv_copy_assignment const volatile>);
+static_assert(!std::semiregular<no_copy_constructor>);
+static_assert(!std::semiregular<no_copy_assignment>);
+static_assert(!std::semiregular<no_copy_assignment_mutable>);
+static_assert(!std::semiregular<derived_from_noncopyable>);
+static_assert(!std::semiregular<has_noncopyable>);
+static_assert(!std::semiregular<has_const_member>);
+static_assert(!std::semiregular<has_cv_member>);
+static_assert(!std::semiregular<has_lvalue_reference_member>);
+static_assert(!std::semiregular<has_rvalue_reference_member>);
+static_assert(!std::semiregular<has_function_ref_member>);
+static_assert(!std::semiregular<deleted_assignment_from_const_rvalue>);
+
+// Not default_initialzable
+static_assert(!std::semiregular<std::runtime_error>);
+static_assert(
+    !std::semiregular<std::tuple<std::runtime_error, std::overflow_error> >);
+static_assert(!std::semiregular<std::nullopt_t>);
+static_assert(!std::semiregular<no_copy_constructor>);
+static_assert(!std::semiregular<no_copy_assignment>);
+static_assert(std::is_copy_assignable_v<no_copy_assignment_mutable>);
+static_assert(!std::semiregular<no_copy_assignment_mutable>);
+static_assert(!std::semiregular<derived_from_noncopyable>);
+static_assert(!std::semiregular<has_noncopyable>);
+
+static_assert(!std::semiregular<no_default_ctor>);
+static_assert(!std::semiregular<derived_from_non_default_initializable>);
+static_assert(!std::semiregular<has_non_default_initializable>);
+
+static_assert(!std::semiregular<deleted_default_ctor>);
+static_assert(!std::semiregular<derived_from_deleted_default_ctor>);
+static_assert(!std::semiregular<has_deleted_default_ctor>);
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/Copyable.h b/app/src/main/cpp/libcxx/test/std/containers/Copyable.h
new file mode 100644
index 0000000..4aa5a97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/Copyable.h
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef COPYABLE_H
+#define COPYABLE_H
+
+class Copyable
+{
+public:
+};
+
+#endif // COPYABLE_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/Emplaceable.h b/app/src/main/cpp/libcxx/test/std/containers/Emplaceable.h
new file mode 100644
index 0000000..ca780d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/Emplaceable.h
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef EMPLACEABLE_H
+#define EMPLACEABLE_H
+
+#include <functional>
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+
+class Emplaceable
+{
+    Emplaceable(const Emplaceable&);
+    Emplaceable& operator=(const Emplaceable&);
+
+    int int_;
+    double double_;
+public:
+    Emplaceable() : int_(0), double_(0) {}
+    Emplaceable(int i, double d) : int_(i), double_(d) {}
+    Emplaceable(Emplaceable&& x)
+        : int_(x.int_), double_(x.double_)
+            {x.int_ = 0; x.double_ = 0;}
+    Emplaceable& operator=(Emplaceable&& x)
+        {int_ = x.int_; x.int_ = 0;
+         double_ = x.double_; x.double_ = 0;
+         return *this;}
+
+    bool operator==(const Emplaceable& x) const
+        {return int_ == x.int_ && double_ == x.double_;}
+    bool operator<(const Emplaceable& x) const
+        {return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);}
+
+    int get() const {return int_;}
+};
+
+namespace std {
+
+template <>
+struct hash<Emplaceable>
+{
+    typedef Emplaceable argument_type;
+    typedef std::size_t result_type;
+
+    std::size_t operator()(const Emplaceable& x) const {return x.get();}
+};
+
+}
+
+#endif // TEST_STD_VER >= 11
+#endif // EMPLACEABLE_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/NotConstructible.h b/app/src/main/cpp/libcxx/test/std/containers/NotConstructible.h
new file mode 100644
index 0000000..f8d0d4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/NotConstructible.h
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef NOTCONSTRUCTIBLE_H
+#define NOTCONSTRUCTIBLE_H
+
+#include <functional>
+
+class NotConstructible
+{
+    NotConstructible(const NotConstructible&);
+    NotConstructible& operator=(const NotConstructible&);
+public:
+};
+
+inline
+bool
+operator==(const NotConstructible&, const NotConstructible&)
+{return true;}
+
+namespace std
+{
+
+template <>
+struct hash<NotConstructible>
+{
+    typedef NotConstructible argument_type;
+    typedef std::size_t result_type;
+
+    std::size_t operator()(const NotConstructible&) const {return 0;}
+};
+
+}
+
+#endif // NOTCONSTRUCTIBLE_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/iterator_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/iterator_types.pass.cpp
new file mode 100644
index 0000000..1b8556f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/iterator_types.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <map>
+#include <set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+
+template <class Map, class ValueTp, class PtrT, class CPtrT>
+void testMap() {
+  typedef typename Map::difference_type Diff;
+  {
+    typedef typename Map::iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp&>::value), "");
+    static_assert((std::is_same<typename It::pointer, PtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+  {
+    typedef typename Map::const_iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp const&>::value), "");
+    static_assert((std::is_same<typename It::pointer, CPtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+}
+
+
+template <class Set, class ValueTp, class CPtrT>
+void testSet() {
+  static_assert((std::is_same<typename Set::iterator,
+                             typename Set::const_iterator>::value), "");
+  typedef typename Set::difference_type Diff;
+  {
+    typedef typename Set::iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp const&>::value), "");
+    static_assert((std::is_same<typename It::pointer, CPtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+
+  }
+}
+
+int main(int, char**) {
+  {
+    typedef std::map<int, int> Map;
+    typedef std::pair<const int, int> ValueTp;
+    testMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::map<int, int, std::less<int>, Alloc> Map;
+    testMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::map<int, int, std::less<int>, Alloc> Map;
+    testMap<Map, ValueTp, min_pointer<ValueTp>, min_pointer<const ValueTp>>();
+  }
+#endif
+  {
+    typedef std::multimap<int, int> Map;
+    typedef std::pair<const int, int> ValueTp;
+    testMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::multimap<int, int, std::less<int>, Alloc> Map;
+    testMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::multimap<int, int, std::less<int>, Alloc> Map;
+    testMap<Map, ValueTp, min_pointer<ValueTp>, min_pointer<const ValueTp>>();
+  }
+#endif
+  {
+    typedef int ValueTp;
+    typedef std::set<ValueTp> Set;
+    testSet<Set, ValueTp, ValueTp const*>();
+  }
+  {
+    typedef int ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::set<ValueTp, std::less<ValueTp>, Alloc> Set;
+    testSet<Set, ValueTp, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef int ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::set<ValueTp, std::less<ValueTp>, Alloc> Set;
+    testSet<Set, ValueTp, min_pointer<const ValueTp>>();
+  }
+#endif
+  {
+    typedef int ValueTp;
+    typedef std::multiset<ValueTp> Set;
+    testSet<Set, ValueTp, ValueTp const*>();
+  }
+  {
+    typedef int ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::multiset<ValueTp, std::less<ValueTp>, Alloc> Set;
+    testSet<Set, ValueTp, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef int ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::multiset<ValueTp, std::less<ValueTp>, Alloc> Set;
+    testSet<Set, ValueTp, min_pointer<const ValueTp>>();
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/PR28469_undefined_behavior_segfault.sh.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/PR28469_undefined_behavior_segfault.sh.cpp
new file mode 100644
index 0000000..584b829
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/PR28469_undefined_behavior_segfault.sh.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// RUN: %{build} -O2
+// RUN: %{run}
+
+// <map>
+
+// Previously this code caused a segfault when compiled at -O2 due to undefined
+// behavior in __tree. See https://llvm.org/PR28469
+
+#include <functional>
+#include <map>
+
+void dummy() {}
+
+struct F {
+    std::map<int, std::function<void()> > m;
+    F() { m[42] = &dummy; }
+};
+
+int main(int, char**) {
+    F f;
+    f = F();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..faec5aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+//   The container's value type must be the same as the allocator's value type
+
+#include <map>
+
+int main(int, char**)
+{
+    std::map<int, int, std::less<int>, std::allocator<long> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/compare.pass.cpp
new file mode 100644
index 0000000..31221b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/compare.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// template <class Key, class T, class Compare = less<Key>,
+//           class Allocator = allocator<pair<const Key, T>>>
+// class map
+
+// https://llvm.org/PR16538
+// https://llvm.org/PR16549
+
+#include <map>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Key {
+  template <typename T> Key(const T&) {}
+  bool operator< (const Key&) const { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::map<Key, int> MapT;
+    typedef MapT::iterator Iter;
+    typedef std::pair<Iter, bool> IterBool;
+    {
+        MapT m_empty;
+        MapT m_contains;
+        m_contains[Key(0)] = 42;
+
+        Iter it = m_empty.find(Key(0));
+        assert(it == m_empty.end());
+        it = m_contains.find(Key(0));
+        assert(it != m_contains.end());
+    }
+    {
+        MapT map;
+        IterBool result = map.insert(std::make_pair(Key(0), 42));
+        assert(result.second);
+        assert(result.first->second == 42);
+        IterBool result2 = map.insert(std::make_pair(Key(0), 43));
+        assert(!result2.second);
+        assert(map[Key(0)] == 42);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/gcc_workaround.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/gcc_workaround.pass.cpp
new file mode 100644
index 0000000..e69a241
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/gcc_workaround.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Tests workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37804
+
+#include <map>
+std::map<int,int>::iterator it;
+#include <set>
+
+#include "test_macros.h"
+using std::set;
+using std::multiset;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/get_allocator.pass.cpp
new file mode 100644
index 0000000..b214e44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/get_allocator.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// allocator_type get_allocator() const
+
+#include <map>
+#include <cassert>
+#include <string>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::pair<const int, std::string> ValueType;
+    {
+        std::allocator<ValueType> alloc;
+        const std::map<int, std::string> m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+    {
+        other_allocator<ValueType> alloc(1);
+        const std::map<int, std::string, std::less<int>,
+                       other_allocator<ValueType> > m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/incomplete_type.pass.cpp
new file mode 100644
index 0000000..c663f8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/incomplete_type.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// Check that std::map and its iterators can be instantiated with an incomplete
+// type.
+
+#include <map>
+
+#include "test_macros.h"
+
+struct A {
+    typedef std::map<A, A> Map;
+    int data;
+    Map m;
+    Map::iterator it;
+    Map::const_iterator cit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+inline bool operator<(A const& L, A const& R)  { return L.data < R.data; }
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..4676b2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <map>
+
+#include <iterator>
+
+using iterator = std::map<int, int>::iterator;
+using const_iterator = std::map<int, int>::const_iterator;
+using reverse_iterator = std::map<int, int>::reverse_iterator;
+using const_reverse_iterator = std::map<int, int>::const_reverse_iterator;
+using value_type = std::pair<const int, int>;
+
+static_assert(std::bidirectional_iterator<iterator>);
+static_assert(!std::random_access_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<iterator, std::pair<int, int>*>);
+static_assert( std::indirectly_copyable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::bidirectional_iterator<const_iterator>);
+static_assert(!std::random_access_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/at.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/at.pass.cpp
new file mode 100644
index 0000000..c13c6a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/at.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+//       mapped_type& at(const key_type& k);
+// const mapped_type& at(const key_type& k) const;
+
+#include <cassert>
+#include <map>
+#include <stdexcept>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1.5),
+            V(2, 2.5),
+            V(3, 3.5),
+            V(4, 4.5),
+            V(5, 5.5),
+            V(7, 7.5),
+            V(8, 8.5),
+        };
+        std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 7);
+        assert(m.at(1) == 1.5);
+        m.at(1) = -1.5;
+        assert(m.at(1) == -1.5);
+        assert(m.at(2) == 2.5);
+        assert(m.at(3) == 3.5);
+        assert(m.at(4) == 4.5);
+        assert(m.at(5) == 5.5);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD m.at(6);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+#endif
+        assert(m.at(7) == 7.5);
+        assert(m.at(8) == 8.5);
+        assert(m.size() == 7);
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1.5),
+            V(2, 2.5),
+            V(3, 3.5),
+            V(4, 4.5),
+            V(5, 5.5),
+            V(7, 7.5),
+            V(8, 8.5),
+        };
+        const std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 7);
+        assert(m.at(1) == 1.5);
+        assert(m.at(2) == 2.5);
+        assert(m.at(3) == 3.5);
+        assert(m.at(4) == 4.5);
+        assert(m.at(5) == 5.5);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD m.at(6);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+#endif
+        assert(m.at(7) == 7.5);
+        assert(m.at(8) == 8.5);
+        assert(m.size() == 7);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1.5),
+            V(2, 2.5),
+            V(3, 3.5),
+            V(4, 4.5),
+            V(5, 5.5),
+            V(7, 7.5),
+            V(8, 8.5),
+        };
+        std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 7);
+        assert(m.at(1) == 1.5);
+        m.at(1) = -1.5;
+        assert(m.at(1) == -1.5);
+        assert(m.at(2) == 2.5);
+        assert(m.at(3) == 3.5);
+        assert(m.at(4) == 4.5);
+        assert(m.at(5) == 5.5);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD m.at(6);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+#endif
+        assert(m.at(7) == 7.5);
+        assert(m.at(8) == 8.5);
+        assert(m.size() == 7);
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1.5),
+            V(2, 2.5),
+            V(3, 3.5),
+            V(4, 4.5),
+            V(5, 5.5),
+            V(7, 7.5),
+            V(8, 8.5),
+        };
+        const std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 7);
+        assert(m.at(1) == 1.5);
+        assert(m.at(2) == 2.5);
+        assert(m.at(3) == 3.5);
+        assert(m.at(4) == 4.5);
+        assert(m.at(5) == 5.5);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD m.at(6);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+#endif
+        assert(m.at(7) == 7.5);
+        assert(m.at(8) == 8.5);
+        assert(m.size() == 7);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/empty.pass.cpp
new file mode 100644
index 0000000..a4cd019
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/empty.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// bool empty() const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/empty.verify.cpp
new file mode 100644
index 0000000..1430591
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <map>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::map<int, int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_key.pass.cpp
new file mode 100644
index 0000000..eaa8e1d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_key.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// mapped_type& operator[](const key_type& k);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#if TEST_STD_VER >= 11
+#include "container_test_types.h"
+#endif
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1.5),
+        V(2, 2.5),
+        V(3, 3.5),
+        V(4, 4.5),
+        V(5, 5.5),
+        V(7, 7.5),
+        V(8, 8.5),
+    };
+    std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    assert(m.size() == 7);
+    assert(m[1] == 1.5);
+    assert(m.size() == 7);
+    m[1] = -1.5;
+    assert(m[1] == -1.5);
+    assert(m.size() == 7);
+    assert(m[6] == 0);
+    assert(m.size() == 8);
+    m[6] = 6.5;
+    assert(m[6] == 6.5);
+    assert(m.size() == 8);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1.5),
+        V(2, 2.5),
+        V(3, 3.5),
+        V(4, 4.5),
+        V(5, 5.5),
+        V(7, 7.5),
+        V(8, 8.5),
+    };
+    std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    assert(m.size() == 7);
+    assert(m[1] == 1.5);
+    assert(m.size() == 7);
+    const int i = 1;
+    m[i] = -1.5;
+    assert(m[1] == -1.5);
+    assert(m.size() == 7);
+    assert(m[6] == 0);
+    assert(m.size() == 8);
+    m[6] = 6.5;
+    assert(m[6] == 6.5);
+    assert(m.size() == 8);
+    }
+    {
+        // Use "container_test_types.h" to check what arguments get passed
+        // to the allocator for operator[]
+        using Container = TCT::map<>;
+        using Key = Container::key_type;
+        using MappedType = Container::mapped_type;
+        ConstructController* cc = getConstructController();
+        cc->reset();
+        {
+            Container c;
+            const Key k(1);
+            cc->expect<std::piecewise_construct_t const&, std::tuple<Key const&>&&, std::tuple<>&&>();
+            MappedType& mref = c[k];
+            assert(!cc->unchecked());
+            {
+                DisableAllocationGuard g;
+                MappedType& mref2 = c[k];
+                assert(&mref == &mref2);
+            }
+        }
+        {
+            Container c;
+            Key k(1);
+            cc->expect<std::piecewise_construct_t const&, std::tuple<Key const&>&&, std::tuple<>&&>();
+            MappedType& mref = c[k];
+            assert(!cc->unchecked());
+            {
+                DisableAllocationGuard g;
+                MappedType& mref2 = c[k];
+                assert(&mref == &mref2);
+            }
+        }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1.5),
+        V(2, 2.5),
+        V(3, 3.5),
+        V(4, 4.5),
+        V(5, 5.5),
+        V(7, 7.5),
+        V(8, 8.5),
+    };
+    std::map<int, double, std::less<>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+
+    assert(m.size() == 7);
+    assert(m[1] == 1.5);
+    assert(m.size() == 7);
+    m[1] = -1.5;
+    assert(m[1] == -1.5);
+    assert(m.size() == 7);
+    assert(m[6] == 0);
+    assert(m.size() == 8);
+    m[6] = 6.5;
+    assert(m[6] == 6.5);
+    assert(m.size() == 8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_rv_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_rv_key.pass.cpp
new file mode 100644
index 0000000..5e92e6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_rv_key.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// mapped_type& operator[](key_type&& k);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "container_test_types.h"
+
+int main(int, char**)
+{
+    {
+    std::map<MoveOnly, double> m;
+    assert(m.size() == 0);
+    assert(m[1] == 0.0);
+    assert(m.size() == 1);
+    m[1] = -1.5;
+    assert(m[1] == -1.5);
+    assert(m.size() == 1);
+    assert(m[6] == 0);
+    assert(m.size() == 2);
+    m[6] = 6.5;
+    assert(m[6] == 6.5);
+    assert(m.size() == 2);
+    }
+    {
+    typedef std::pair<const MoveOnly, double> V;
+    std::map<MoveOnly, double, std::less<MoveOnly>, min_allocator<V>> m;
+    assert(m.size() == 0);
+    assert(m[1] == 0.0);
+    assert(m.size() == 1);
+    m[1] = -1.5;
+    assert(m[1] == -1.5);
+    assert(m.size() == 1);
+    assert(m[6] == 0);
+    assert(m.size() == 2);
+    m[6] = 6.5;
+    assert(m[6] == 6.5);
+    assert(m.size() == 2);
+    }
+    {
+        // Use "container_test_types.h" to check what arguments get passed
+        // to the allocator for operator[]
+        using Container = TCT::map<>;
+        using Key = Container::key_type;
+        using MappedType = Container::mapped_type;
+        ConstructController* cc = getConstructController();
+        cc->reset();
+        {
+            Container c;
+            Key k(1);
+            cc->expect<std::piecewise_construct_t const&, std::tuple<Key &&>&&, std::tuple<>&&>();
+            MappedType& mref = c[std::move(k)];
+            assert(!cc->unchecked());
+            {
+                Key k2(1);
+                DisableAllocationGuard g;
+                MappedType& mref2 = c[std::move(k2)];
+                assert(&mref == &mref2);
+            }
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_tuple.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_tuple.pass.cpp
new file mode 100644
index 0000000..cf75e1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/index_tuple.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// mapped_type& operator[](const key_type& k);
+
+// https://llvm.org/PR16542
+
+#include <map>
+#include <tuple>
+
+int main(int, char**) {
+    std::map<std::tuple<int, int>, std::size_t> m;
+    m[std::make_tuple(2, 3)] = 7;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/iterator.pass.cpp
new file mode 100644
index 0000000..4589f93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/iterator.pass.cpp
@@ -0,0 +1,266 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+//       iterator begin();
+// const_iterator begin() const;
+//       iterator end();
+// const_iterator end()   const;
+//
+//       reverse_iterator rbegin();
+// const_reverse_iterator rbegin() const;
+//       reverse_iterator rend();
+// const_reverse_iterator rend()   const;
+//
+// const_iterator         cbegin()  const;
+// const_iterator         cend()    const;
+// const_reverse_iterator crbegin() const;
+// const_reverse_iterator crend()   const;
+
+#include <map>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::map<int, double>::iterator i;
+        i = m.begin();
+        std::map<int, double>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; static_cast<std::size_t>(j) <= m.size(); ++j, ++i)
+        {
+            assert(i->first == j);
+            assert(i->second == 1);
+            i->second = 2.5;
+            assert(i->second == 2.5);
+        }
+        assert(i == m.end());
+        for (int j = m.size(); j >= 1; --j)
+        {
+            --i;
+            assert(i->first == j);
+            assert(i->second == 2.5);
+            i->second = 1;
+            assert(i->second == 1);
+        }
+        assert(i == m.begin());
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        const std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::map<int, double>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; static_cast<std::size_t>(j) <= m.size(); ++j, ++i)
+        {
+            assert(i->first == j);
+            assert(i->second == 1);
+        }
+        assert(i == m.end());
+        for (int j = m.size(); j >= 1; --j)
+        {
+            --i;
+            assert(i->first == j);
+            assert(i->second == 1);
+        }
+        assert(i == m.begin());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::map<int, double, std::less<int>, min_allocator<V>>::iterator i;
+        i = m.begin();
+        std::map<int, double, std::less<int>, min_allocator<V>>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; static_cast<std::size_t>(j) <= m.size(); ++j, ++i)
+        {
+            assert(i->first == j);
+            assert(i->second == 1);
+            i->second = 2.5;
+            assert(i->second == 2.5);
+        }
+        assert(i == m.end());
+        for (int j = m.size(); j >= 1; --j)
+        {
+            --i;
+            assert(i->first == j);
+            assert(i->second == 2.5);
+            i->second = 1;
+            assert(i->second == 1);
+        }
+        assert(i == m.begin());
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        const std::map<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::map<int, double, std::less<int>, min_allocator<V>>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; static_cast<std::size_t>(j) <= m.size(); ++j, ++i)
+        {
+            assert(i->first == j);
+            assert(i->second == 1);
+        }
+        assert(i == m.end());
+        for (int j = m.size(); j >= 1; --j)
+        {
+            --i;
+            assert(i->first == j);
+            assert(i->second == 1);
+        }
+        assert(i == m.begin());
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::map<int, double> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/max_size.pass.cpp
new file mode 100644
index 0000000..b38cf11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/max_size.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <map>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  typedef std::pair<const int, int> KV;
+  {
+    typedef limited_allocator<KV, 10> A;
+    typedef std::map<int, int, std::less<int>, A> C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<KV, (size_t)-1> A;
+    typedef std::map<int, int, std::less<int>, A> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+  }
+  {
+    typedef std::map<char, int> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/size.pass.cpp
new file mode 100644
index 0000000..837f720
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.access/size.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// size_type size() const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/alloc.pass.cpp
new file mode 100644
index 0000000..45e8671
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/alloc.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// explicit map(const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::less<int> C;
+    typedef test_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m(A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::less<int> C;
+    typedef min_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m(A{});
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A());
+    }
+    {
+    typedef std::less<int> C;
+    typedef explicit_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m(A{});
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..2a557aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map& operator=(initializer_list<value_type> il);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+void test_basic() {
+  {
+    typedef std::pair<const int, double> V;
+    std::map<int, double> m =
+                            {
+                                {20, 1},
+                            };
+    m =
+                            {
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {2, 1},
+                                {2, 1.5},
+                                {2, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                            };
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    std::map<int, double, std::less<int>, min_allocator<V>> m =
+                            {
+                                {20, 1},
+                            };
+    m =
+                            {
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {2, 1},
+                                {2, 1.5},
+                                {2, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                            };
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+}
+
+
+void duplicate_keys_test() {
+  test_allocator_statistics alloc_stats;
+  typedef std::map<int, int, std::less<int>, test_allocator<std::pair<const int, int> > > Map;
+  {
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 0);
+    Map s({{1, 0}, {2, 0}, {3, 0}}, std::less<int>(), test_allocator<std::pair<const int, int> >(&alloc_stats));
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 3);
+    s = {{4, 0}, {4, 0}, {4, 0}, {4, 0}};
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 1);
+    assert(s.size() == 1);
+    assert(s.begin()->first == 4);
+  }
+  LIBCPP_ASSERT(alloc_stats.alloc_count == 0);
+}
+
+int main(int, char**)
+{
+  test_basic();
+  duplicate_keys_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare.pass.cpp
new file mode 100644
index 0000000..04702f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// explicit map(const key_compare& comp);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> C;
+    const std::map<int, double, C> m(C(3));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(3));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef test_less<int> C;
+    const std::map<int, double, C, min_allocator<std::pair<const int, double>>> m(C(3));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(3));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare_alloc.pass.cpp
new file mode 100644
index 0000000..9d425e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare_alloc.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map(const key_compare& comp, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> C;
+    typedef test_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m(C(4), A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef test_less<int> C;
+    typedef min_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m(C(4), A());
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A());
+    }
+    {
+    typedef test_less<int> C;
+    typedef explicit_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m(C(4), A{});
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A{});
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..3c714de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// Check that std::map fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <map>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs < rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::map<int, int, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy.pass.cpp
new file mode 100644
index 0000000..5899dec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map(const map& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::map<int, double, C, A> m = mo;
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::map<int, double, C, A> m = mo;
+        assert(m.get_allocator() == A(-2));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::map<int, double, C, A> m = mo;
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..72402b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_alloc.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map(const map& m, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef test_allocator<V> A;
+    std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+    std::map<int, double, C, A> m(mo, A(3));
+    assert(m.get_allocator() == A(3));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+
+    assert(mo.get_allocator() == A(7));
+    assert(mo.key_comp() == C(5));
+    assert(mo.size() == 3);
+    assert(std::distance(mo.begin(), mo.end()) == 3);
+    assert(*mo.begin() == V(1, 1));
+    assert(*std::next(mo.begin()) == V(2, 1));
+    assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef min_allocator<V> A;
+    std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+    std::map<int, double, C, A> m(mo, A());
+    assert(m.get_allocator() == A());
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+
+    assert(mo.get_allocator() == A());
+    assert(mo.key_comp() == C(5));
+    assert(mo.size() == 3);
+    assert(std::distance(mo.begin(), mo.end()) == 3);
+    assert(*mo.begin() == V(1, 1));
+    assert(*std::next(mo.begin()) == V(2, 1));
+    assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef explicit_allocator<V> A;
+    std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A{});
+    std::map<int, double, C, A> m(mo, A{});
+    assert(m.get_allocator() == A());
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+
+    assert(mo.get_allocator() == A());
+    assert(mo.key_comp() == C(5));
+    assert(mo.size() == 3);
+    assert(std::distance(mo.begin(), mo.end()) == 3);
+    assert(*mo.begin() == V(1, 1));
+    assert(*std::next(mo.begin()) == V(2, 1));
+    assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_assign.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_assign.addressof.compile.pass.cpp
new file mode 100644
index 0000000..9909ef8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_assign.addressof.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map& operator=(const map& m);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  {
+    std::map<int, operator_hijacker> mo;
+    std::map<int, operator_hijacker> m;
+    m = mo;
+  }
+  {
+    std::map<operator_hijacker, int> mo;
+    std::map<operator_hijacker, int> m;
+    m = mo;
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_assign.pass.cpp
new file mode 100644
index 0000000..3fd051f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/copy_assign.pass.cpp
@@ -0,0 +1,350 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map& operator=(const map& m);
+
+// XFAIL: libcpp-has-debug-mode
+
+#include <map>
+#include <algorithm>
+#include <cassert>
+#include <cstdio>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+std::vector<int> ca_allocs;
+std::vector<int> ca_deallocs;
+
+template <class T>
+class counting_allocatorT {
+public:
+    typedef T value_type;
+    int foo{0};
+    counting_allocatorT(int f) noexcept : foo(f) {}
+
+    using propagate_on_container_copy_assignment = std::true_type;
+    template <class U> counting_allocatorT(const counting_allocatorT<U>& other) noexcept {foo = other.foo;}
+    template <class U> bool operator==(const counting_allocatorT<U>& other) const noexcept { return foo == other.foo; }
+    template <class U> bool operator!=(const counting_allocatorT<U>& other) const noexcept { return foo != other.foo; }
+
+    T* allocate(size_t n) const {
+        ca_allocs.push_back(foo);
+        void * const pv = ::malloc(n * sizeof(T));
+        return static_cast<T *>(pv);
+    }
+    void deallocate(T* p, size_t) const noexcept {
+        ca_deallocs.push_back(foo);
+        free(p);
+    }
+};
+
+template <class T>
+class counting_allocatorF {
+public:
+    typedef T value_type;
+    int foo{0};
+    counting_allocatorF(int f) noexcept : foo(f) {}
+
+    using propagate_on_container_copy_assignment = std::false_type;
+    template <class U> counting_allocatorF(const counting_allocatorF<U>& other) noexcept {foo = other.foo;}
+    template <class U> bool operator==(const counting_allocatorF<U>& other) const noexcept { return foo == other.foo; }
+    template <class U> bool operator!=(const counting_allocatorF<U>& other) const noexcept { return foo != other.foo; }
+
+    T* allocate(size_t n) const {
+        ca_allocs.push_back(foo);
+        void * const pv = ::malloc(n * sizeof(T));
+        return static_cast<T *>(pv);
+    }
+    void deallocate(T* p, size_t) const noexcept {
+        ca_deallocs.push_back(foo);
+        free(p);
+    }
+};
+
+bool balanced_allocs() {
+    std::vector<int> temp1, temp2;
+
+    std::printf("Allocations = %zu, deallocations = %zu\n", ca_allocs.size(),
+                ca_deallocs.size());
+    if (ca_allocs.size() != ca_deallocs.size())
+        return false;
+
+    temp1 = ca_allocs;
+    std::sort(temp1.begin(), temp1.end());
+    temp2.clear();
+    std::unique_copy(temp1.begin(), temp1.end(), std::back_inserter<std::vector<int>>(temp2));
+    std::printf("There were %zu different allocators\n", temp2.size());
+
+    for (std::vector<int>::const_iterator it = temp2.begin(); it != temp2.end(); ++it ) {
+        std::ptrdiff_t const allocs = std::count(ca_allocs.begin(), ca_allocs.end(), *it);
+        std::ptrdiff_t const deallocs = std::count(ca_deallocs.begin(), ca_deallocs.end(), *it);
+        std::printf("%d: %td vs %td\n", *it, allocs, deallocs);
+        if (allocs != deallocs)
+            return false;
+    }
+
+    temp1 = ca_allocs;
+    std::sort(temp1.begin(), temp1.end());
+    temp2.clear();
+    std::unique_copy(temp1.begin(), temp1.end(), std::back_inserter<std::vector<int>>(temp2));
+    std::printf("There were %zu different (de)allocators\n", temp2.size());
+
+    for (std::vector<int>::const_iterator it = ca_deallocs.begin(); it != ca_deallocs.end(); ++it ) {
+        std::ptrdiff_t const allocs = std::count(ca_allocs.begin(), ca_allocs.end(), *it);
+        std::ptrdiff_t const deallocs = std::count(ca_deallocs.begin(), ca_deallocs.end(), *it);
+        std::printf("%d: %td vs %td\n", *it, allocs, deallocs);
+        if (allocs != deallocs)
+            return false;
+    }
+
+    return true;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2)
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        const V ar[] =
+        {
+            V(1, 1),
+            V(2, 1),
+            V(3, 1),
+        };
+        std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::map<int, double> *p = &m;
+        m = *p;
+
+        assert(m.size() == 3);
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2)
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m.get_allocator() == A(2));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2)
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A());
+        m = mo;
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2)
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A());
+        m = mo;
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+
+    assert(balanced_allocs());
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2)
+        };
+        typedef test_less<int> C;
+        typedef counting_allocatorT<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(1));
+        std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(2));
+        m = mo;
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+    assert(balanced_allocs());
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2)
+        };
+        typedef test_less<int> C;
+        typedef counting_allocatorF<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(100));
+        std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(200));
+        m = mo;
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == V(1, 1));
+        assert(*std::next(mo.begin()) == V(2, 1));
+        assert(*std::next(mo.begin(), 2) == V(3, 1));
+    }
+    assert(balanced_allocs());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct.fail.cpp
new file mode 100644
index 0000000..0c0d21b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct.fail.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// map(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> map<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
+// map(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> map<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// map(InputIterator, InputIterator, Allocator)
+//   -> map<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// map(initializer_list<Key>, Allocator)
+//   -> map<Key, less<Key>, Allocator>;
+
+#include <climits> // INT_MAX
+#include <functional>
+#include <map>
+#include <type_traits>
+
+struct NotAnAllocator {
+    friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
+};
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    {
+        // cannot deduce Key and T from nothing
+        std::map m; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce Key and T from just (Compare)
+        std::map m(std::less<int>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce Key and T from just (Compare, Allocator)
+        std::map m(std::less<int>{}, std::allocator<PC>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce Key and T from just (Allocator)
+        std::map m(std::allocator<PC>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // refuse to rebind the allocator if Allocator::value_type is not exactly what we expect
+        const P arr[] = { {1,1L}, {2,2L}, {3,3L} };
+        std::map m(arr, arr + 3, std::allocator<P>());
+            // expected-error-re@map:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '.*')?}}{{.*}}Allocator::value_type must be same type as value_type}}
+    }
+    {
+        // cannot convert from some arbitrary unrelated type
+        NotAnAllocator a;
+        std::map m(a); // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::map m{ {1,1L}, {2,2L}, {3,3L} };
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::map m({ {1,1L}, {2,2L}, {3,3L} }, std::less<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::map m({ {1,1L}, {2,2L}, {3,3L} }, std::less<int>(), std::allocator<PC>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::map m({ {1,1L}, {2,2L}, {3,3L} }, std::allocator<PC>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // since we have parens, not braces, this deliberately does not find the initializer_list constructor
+        std::map m(P{1,1L});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+    {
+        // since we have parens, not braces, this deliberately does not find the initializer_list constructor
+        std::map m(PC{1,1L});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'map'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct.pass.cpp
new file mode 100644
index 0000000..f104397
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// map(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> map<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
+// map(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> map<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// map(InputIterator, InputIterator, Allocator)
+//   -> map<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// map(initializer_list<Key>, Allocator)
+//   -> map<Key, less<Key>, Allocator>;
+
+#include <algorithm> // std::equal
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <map>
+#include <type_traits>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long>);
+    const PC expected_m[] = { {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr), std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::greater<int>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr), std::greater<int>(), test_allocator<PC>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::greater<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 42);
+    }
+
+    {
+    std::map<int, long> source;
+    std::map m(source);
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::map<int, long> source;
+    std::map m{source};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::map<int, long> source;
+    std::map m(source, std::map<int, long>::allocator_type());
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::map m{ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} };
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long>);
+    const PC expected_m[] = { {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::greater<int>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, std::greater<int>(), test_allocator<PC>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::greater<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 43);
+    }
+
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr), test_allocator<PC>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::less<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 44);
+    }
+
+    {
+    std::map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, test_allocator<PC>(0, 45));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::less<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    {
+    // Examples from LWG3025
+    std::map m{std::pair{1, 1}, {2, 2}, {3, 3}};
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, int>);
+
+    std::map m2{m.begin(), m.end()};
+    ASSERT_SAME_TYPE(decltype(m2), std::map<int, int>);
+    }
+
+    {
+    // Examples from LWG3531
+    std::map m1{{std::pair{1, 2}, {3, 4}}, std::less<int>()};
+    ASSERT_SAME_TYPE(decltype(m1), std::map<int, int>);
+
+    using value_type = std::pair<const int, int>;
+    std::map m2{{value_type{1, 2}, {3, 4}}, std::less<int>()};
+    ASSERT_SAME_TYPE(decltype(m2), std::map<int, int>);
+    }
+
+    AssociativeContainerDeductionGuidesSfinaeAway<std::map, std::map<int, long>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct_const.pass.cpp
new file mode 100644
index 0000000..5b36d1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/deduct_const.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// map(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> map<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
+// map(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> map<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// map(InputIterator, InputIterator, Allocator)
+//   -> map<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// map(initializer_list<Key>, Allocator)
+//   -> map<Key, less<Key>, Allocator>;
+
+#include <algorithm> // std::equal
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <iterator>
+#include <map>
+#include <type_traits>
+
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+using PCC = std::pair<const int, const long>;
+
+int main(int, char**)
+{
+    {
+    const PCC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, const long>);
+    const PCC expected_m[] = { {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PCC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr), std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, const long, std::greater<int>>);
+    const PCC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1, 1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PCC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::map m(std::begin(arr), std::end(arr), std::greater<int>(), test_allocator<PCC>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, const long, std::greater<int>, test_allocator<PCC>>);
+    const PCC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1, 1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 42);
+    }
+
+    {
+    std::map m{ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} };
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long>);
+    const PC expected_m[] = { {1, 1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::greater<int>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1, 1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, std::greater<int>(), test_allocator<PC>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::greater<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1, 1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 43);
+    }
+
+    {
+    std::map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, test_allocator<PC>(0, 45));
+
+    ASSERT_SAME_TYPE(decltype(m), std::map<int, long, std::less<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {1, 1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default.pass.cpp
new file mode 100644
index 0000000..55a99d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map();
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::map<int, double> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+    {
+    typedef explicit_allocator<std::pair<const int, double>> A;
+        {
+        std::map<int, double, std::less<int>, A> m;
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+        {
+        A a;
+        std::map<int, double, std::less<int>, A> m(a);
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+    }
+    {
+    std::map<int, double> m = {};
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..1139d9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default_noexcept.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// map()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default_recursive.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default_recursive.pass.cpp
new file mode 100644
index 0000000..8b95aef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/default_recursive.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// map();
+
+#include <map>
+
+#include "test_macros.h"
+
+struct X
+{
+    std::map<int, X> m;
+    std::map<int, X>::iterator i;
+    std::map<int, X>::const_iterator ci;
+#if TEST_STD_VER <= 17
+    // These reverse_iterator specializations require X to be complete in C++20.
+    std::map<int, X>::reverse_iterator ri;
+    std::map<int, X>::const_reverse_iterator cri;
+#endif // TEST_STD_VER <= 17
+};
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..7d28e18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// ~map() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const noexcept { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..7eebf49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map(initializer_list<value_type> il);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    std::map<int, double> m =
+                            {
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {2, 1},
+                                {2, 1.5},
+                                {2, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                            };
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    std::map<int, double, std::less<int>, min_allocator<V>> m =
+                            {
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {2, 1},
+                                {2, 1.5},
+                                {2, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                            };
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list_compare.pass.cpp
new file mode 100644
index 0000000..441c96d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list_compare.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map(initializer_list<value_type> il, const key_compare& comp);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef test_less<int> C;
+    std::map<int, double, C> m({
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {2, 1},
+                                {2, 1.5},
+                                {2, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                               }, C(3));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.key_comp() == C(3));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    typedef test_less<int> C;
+    std::map<int, double, C, min_allocator<std::pair<const int, double>>> m({
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {2, 1},
+                                {2, 1.5},
+                                {2, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                               }, C(3));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.key_comp() == C(3));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list_compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list_compare_alloc.pass.cpp
new file mode 100644
index 0000000..95ae86e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/initializer_list_compare_alloc.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map(initializer_list<value_type> il, const key_compare& comp, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef test_less<int> C;
+    typedef test_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m({
+                                   {1, 1},
+                                   {1, 1.5},
+                                   {1, 2},
+                                   {2, 1},
+                                   {2, 1.5},
+                                   {2, 2},
+                                   {3, 1},
+                                   {3, 1.5},
+                                   {3, 2}
+                                  }, C(3), A(6));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.key_comp() == C(3));
+    assert(m.get_allocator() == A(6));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    typedef test_less<int> C;
+    typedef min_allocator<std::pair<const int, double> > A;
+    std::map<int, double, C, A> m({
+                                   {1, 1},
+                                   {1, 1.5},
+                                   {1, 2},
+                                   {2, 1},
+                                   {2, 1.5},
+                                   {2, 2},
+                                   {3, 1},
+                                   {3, 1.5},
+                                   {3, 2}
+                                  }, C(3), A());
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.key_comp() == C(3));
+    assert(m.get_allocator() == A());
+    }
+    {
+    typedef std::pair<const int, double> V;
+    typedef min_allocator<V> A;
+    typedef test_less<int> C;
+    typedef std::map<int, double, C, A> M;
+    A a;
+    M m ({ {1, 1},
+           {1, 1.5},
+           {1, 2},
+           {2, 1},
+           {2, 1.5},
+           {2, 2},
+           {3, 1},
+           {3, 1.5},
+           {3, 2}
+          }, a);
+
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.get_allocator() == a);
+    }
+    {
+    typedef std::pair<const int, double> V;
+    typedef explicit_allocator<V> A;
+    typedef test_less<int> C;
+    A a;
+    std::map<int, double, C, A> m({
+                                   {1, 1},
+                                   {1, 1.5},
+                                   {1, 2},
+                                   {2, 1},
+                                   {2, 1.5},
+                                   {2, 2},
+                                   {3, 1},
+                                   {3, 1.5},
+                                   {3, 2}
+                                  }, C(3), a);
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.key_comp() == C(3));
+    assert(m.get_allocator() == a);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter.pass.cpp
new file mode 100644
index 0000000..c3032e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// template <class InputIterator>
+//     map(InputIterator first, InputIterator last);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    std::map<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter_comp.pass.cpp
new file mode 100644
index 0000000..7649ede
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter_comp.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// template <class InputIterator>
+//     map(InputIterator first, InputIterator last, const key_compare& comp);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    std::map<int, double, C> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    std::map<int, double, C, min_allocator<std::pair<const int, double>>> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter_comp_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter_comp_alloc.pass.cpp
new file mode 100644
index 0000000..e871434
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/iter_iter_comp_alloc.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// template <class InputIterator>
+//     map(InputIterator first, InputIterator last,
+//         const key_compare& comp, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef test_allocator<V> A;
+    std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+    assert(m.get_allocator() == A(7));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef min_allocator<V> A;
+    std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+    assert(m.get_allocator() == A());
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    {
+    typedef min_allocator<V> A;
+    typedef test_less<int> C;
+    A a;
+    std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), a );
+
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.get_allocator() == a);
+    }
+    {
+    typedef explicit_allocator<V> A;
+    typedef test_less<int> C;
+    A a;
+    std::map<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), a );
+
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    assert(m.get_allocator() == a);
+    }
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move.pass.cpp
new file mode 100644
index 0000000..0e68ba4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map(map&& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::map<int, double, C, A> mo(C(5), A(7));
+        std::map<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 0);
+        assert(std::distance(m.begin(), m.end()) == 0);
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::map<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::map<int, double, C, A> mo(C(5), A());
+        std::map<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 0);
+        assert(std::distance(m.begin(), m.end()) == 0);
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::map<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::map<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(2, 1));
+        assert(*std::next(m.begin(), 2) == V(3, 1));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..bcfafe8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_alloc.pass.cpp
@@ -0,0 +1,277 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map(map&& m, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(7));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef Counter<int> T;
+        typedef std::pair<int, T> V;
+        typedef std::pair<const int, T> VC;
+        typedef test_allocator<VC> A;
+        typedef std::less<int> C;
+        typedef std::map<const int, T, C, A> M;
+        typedef V* I;
+        Counter_base::gConstructed = 0;
+        {
+            V a1[] =
+            {
+                V(1, 1),
+                V(1, 2),
+                V(1, 3),
+                V(2, 1),
+                V(2, 2),
+                V(2, 3),
+                V(3, 1),
+                V(3, 2),
+                V(3, 3)
+            };
+            const size_t num = sizeof(a1)/sizeof(a1[0]);
+            assert(Counter_base::gConstructed == num);
+
+            M m1(I(a1), I(a1+num), C(), A());
+            assert(Counter_base::gConstructed == num+3);
+
+            M m2(m1);
+            assert(m2 == m1);
+            assert(Counter_base::gConstructed == num+6);
+
+            M m3(std::move(m1), A());
+            assert(m3 == m2);
+            LIBCPP_ASSERT(m1.empty());
+            assert(Counter_base::gConstructed >= (int)(num+6));
+            assert(Counter_base::gConstructed <= (int)(num+6+m1.size()));
+
+            {
+            M m4(std::move(m2), A(5));
+            assert(Counter_base::gConstructed >= (int)(num+6));
+            assert(Counter_base::gConstructed <= (int)(num+6+m1.size()+m2.size()));
+            assert(m4 == m3);
+            LIBCPP_ASSERT(m2.empty());
+            }
+            assert(Counter_base::gConstructed >= (int)(num+3));
+            assert(Counter_base::gConstructed <= (int)(num+3+m1.size()+m2.size()));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef min_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A());
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A());
+        M m3(std::move(m1), A());
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A());
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef explicit_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A{});
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A{});
+        M m3(std::move(m1), A{});
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A{});
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..c19fba5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_assign.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// map& operator=(map&& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(7));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef min_allocator<VC> A;
+        typedef std::map<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A());
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A());
+        M m3(C(3), A());
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A());
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..82a5dba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// map& operator=(map&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..5454d1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.cons/move_noexcept.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// map(map&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..ee55466
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.erasure/erase_if.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <map>
+
+// template <class Key, class T, class Compare, class Allocator, class Predicate>
+//   typename map<Key, T, Compare, Allocator>::size_type
+//   erase_if(map<Key, T, Compare, Allocator>& c, Predicate pred);
+
+#include <map>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+using Init = std::initializer_list<int>;
+template <typename M>
+M make (Init vals)
+{
+    M ret;
+    for (int v : vals)
+        ret[static_cast<typename M::key_type>(v)] = static_cast<typename M::mapped_type>(v + 10);
+    return ret;
+}
+
+template <typename M, typename Pred>
+void test0(Init vals, Pred p, Init expected, size_t expected_erased_count) {
+  M s = make<M>(vals);
+  ASSERT_SAME_TYPE(typename M::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == make<M>(expected));
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v.first == 1;};
+    auto is2 = [](auto v) { return v.first == 2;};
+    auto is3 = [](auto v) { return v.first == 3;};
+    auto is4 = [](auto v) { return v.first == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0<S>({}, is1, {}, 0);
+
+    test0<S>({1}, is1, {}, 1);
+    test0<S>({1}, is2, {1}, 0);
+
+    test0<S>({1, 2}, is1, {2}, 1);
+    test0<S>({1, 2}, is2, {1}, 1);
+    test0<S>({1, 2}, is3, {1, 2}, 0);
+
+    test0<S>({1, 2, 3}, is1, {2, 3}, 1);
+    test0<S>({1, 2, 3}, is2, {1, 3}, 1);
+    test0<S>({1, 2, 3}, is3, {1, 2}, 1);
+    test0<S>({1, 2, 3}, is4, {1, 2, 3}, 0);
+
+    test0<S>({1, 2, 3}, True, {}, 3);
+    test0<S>({1, 2, 3}, False, {1, 2, 3}, 0);
+}
+
+int main(int, char**)
+{
+    test<std::map<int, int>>();
+    test<std::map<int, int, std::less<int>, min_allocator<std::pair<const int, int>>>> ();
+    test<std::map<int, int, std::less<int>, test_allocator<std::pair<const int, int>>>> ();
+
+    test<std::map<long, short>>();
+    test<std::map<short, double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..5c6d00e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/clear.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// void clear() noexcept;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, double> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..f57269c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/emplace.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// template <class... Args>
+//   pair<iterator, bool> emplace(Args&&... args);
+
+#include <map>
+#include <cassert>
+#include <tuple>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, DefaultOnly> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(r.second);
+        assert(r.first == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(!r.second);
+        assert(r.first == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::map<int, Emplaceable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2),
+                                                  std::forward_as_tuple());
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(2, 3.5));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(2, 3.5));
+        assert(!r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::map<int, double> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(M::value_type(2, 3.5));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+    {
+        typedef std::map<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(r.second);
+        assert(r.first == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(!r.second);
+        assert(r.first == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::map<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2),
+                                                  std::forward_as_tuple());
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(2, 3.5));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(2, 3.5));
+        assert(!r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(M::value_type(2, 3.5));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/emplace_hint.pass.cpp
new file mode 100644
index 0000000..85353fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/emplace_hint.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// template <class... Args>
+//   iterator emplace_hint(const_iterator position, Args&&... args);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, DefaultOnly> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace_hint(m.end());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::map<int, Emplaceable> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                       std::forward_as_tuple(2),
+                                       std::forward_as_tuple());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                    std::forward_as_tuple(1),
+                                    std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                    std::forward_as_tuple(1),
+                                    std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::map<int, double> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.end(), M::value_type(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+    {
+        typedef std::map<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace_hint(m.end());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::map<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                       std::forward_as_tuple(2),
+                                       std::forward_as_tuple());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                    std::forward_as_tuple(1),
+                                    std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace_hint(m.end(), std::piecewise_construct,
+                                    std::forward_as_tuple(1),
+                                    std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.end(), M::value_type(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_iter.pass.cpp
new file mode 100644
index 0000000..4486ca6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_iter.pass.cpp
@@ -0,0 +1,261 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// iterator erase(const_iterator position);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator<(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, double> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 5);
+        assert(std::next(m.begin(), 3)->second == 5.5);
+        assert(std::next(m.begin(), 4)->first == 6);
+        assert(std::next(m.begin(), 4)->second == 6.5);
+        assert(std::next(m.begin(), 5)->first == 7);
+        assert(std::next(m.begin(), 5)->second == 7.5);
+        assert(std::next(m.begin(), 6)->first == 8);
+        assert(std::next(m.begin(), 6)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 5);
+        assert(i == m.end());
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin()));
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 6);
+        assert(std::next(m.begin(), 2)->second == 6.5);
+        assert(std::next(m.begin(), 3)->first == 7);
+        assert(std::next(m.begin(), 3)->second == 7.5);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 7);
+        assert(std::next(m.begin(), 2)->second == 7.5);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 1);
+        assert(i == std::next(m.begin(), 0));
+        assert(m.begin()->first == 5);
+        assert(m.begin()->second == 5.5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 5);
+        assert(std::next(m.begin(), 3)->second == 5.5);
+        assert(std::next(m.begin(), 4)->first == 6);
+        assert(std::next(m.begin(), 4)->second == 6.5);
+        assert(std::next(m.begin(), 5)->first == 7);
+        assert(std::next(m.begin(), 5)->second == 7.5);
+        assert(std::next(m.begin(), 6)->first == 8);
+        assert(std::next(m.begin(), 6)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 5);
+        assert(i == m.end());
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin()));
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 6);
+        assert(std::next(m.begin(), 2)->second == 6.5);
+        assert(std::next(m.begin(), 3)->first == 7);
+        assert(std::next(m.begin(), 3)->second == 7.5);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 7);
+        assert(std::next(m.begin(), 2)->second == 7.5);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 1);
+        assert(i == std::next(m.begin(), 0));
+        assert(m.begin()->first == 5);
+        assert(m.begin()->second == 5.5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::map<T, int> C;
+        typedef C::iterator I;
+
+        C c;
+        T a{0};
+        I it = c.find(a);
+        if (it != c.end())
+            c.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..0189b1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_iter_iter.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, double> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(m.cbegin(), m.cbegin());
+        assert(m.size() == 8);
+        assert(i == m.begin());
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 4);
+        assert(std::next(m.begin(), 3)->second == 4.5);
+        assert(std::next(m.begin(), 4)->first == 5);
+        assert(std::next(m.begin(), 4)->second == 5.5);
+        assert(std::next(m.begin(), 5)->first == 6);
+        assert(std::next(m.begin(), 5)->second == 6.5);
+        assert(std::next(m.begin(), 6)->first == 7);
+        assert(std::next(m.begin(), 6)->second == 7.5);
+        assert(std::next(m.begin(), 7)->first == 8);
+        assert(std::next(m.begin(), 7)->second == 8.5);
+
+        i = m.erase(m.cbegin(), std::next(m.cbegin(), 2));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 6));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(m.cbegin(), m.cbegin());
+        assert(m.size() == 8);
+        assert(i == m.begin());
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 4);
+        assert(std::next(m.begin(), 3)->second == 4.5);
+        assert(std::next(m.begin(), 4)->first == 5);
+        assert(std::next(m.begin(), 4)->second == 5.5);
+        assert(std::next(m.begin(), 5)->first == 6);
+        assert(std::next(m.begin(), 5)->second == 6.5);
+        assert(std::next(m.begin(), 6)->first == 7);
+        assert(std::next(m.begin(), 6)->second == 7.5);
+        assert(std::next(m.begin(), 7)->first == 8);
+        assert(std::next(m.begin(), 7)->second == 8.5);
+
+        i = m.erase(m.cbegin(), std::next(m.cbegin(), 2));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 6));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_key.pass.cpp
new file mode 100644
index 0000000..8a2bc9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/erase_key.pass.cpp
@@ -0,0 +1,277 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// size_type erase(const key_type& k);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, double> M;
+        typedef std::pair<int, double> P;
+        typedef M::size_type R;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        R s = m.erase(9);
+        assert(s == 0);
+        assert(m.size() == 8);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 4);
+        assert(std::next(m.begin(), 3)->second == 4.5);
+        assert(std::next(m.begin(), 4)->first == 5);
+        assert(std::next(m.begin(), 4)->second == 5.5);
+        assert(std::next(m.begin(), 5)->first == 6);
+        assert(std::next(m.begin(), 5)->second == 6.5);
+        assert(std::next(m.begin(), 6)->first == 7);
+        assert(std::next(m.begin(), 6)->second == 7.5);
+        assert(std::next(m.begin(), 7)->first == 8);
+        assert(std::next(m.begin(), 7)->second == 8.5);
+
+        s = m.erase(4);
+        assert(m.size() == 7);
+        assert(s == 1);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 5);
+        assert(std::next(m.begin(), 3)->second == 5.5);
+        assert(std::next(m.begin(), 4)->first == 6);
+        assert(std::next(m.begin(), 4)->second == 6.5);
+        assert(std::next(m.begin(), 5)->first == 7);
+        assert(std::next(m.begin(), 5)->second == 7.5);
+        assert(std::next(m.begin(), 6)->first == 8);
+        assert(std::next(m.begin(), 6)->second == 8.5);
+
+        s = m.erase(1);
+        assert(m.size() == 6);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        s = m.erase(8);
+        assert(m.size() == 5);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+
+        s = m.erase(3);
+        assert(m.size() == 4);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 6);
+        assert(std::next(m.begin(), 2)->second == 6.5);
+        assert(std::next(m.begin(), 3)->first == 7);
+        assert(std::next(m.begin(), 3)->second == 7.5);
+
+        s = m.erase(6);
+        assert(m.size() == 3);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 7);
+        assert(std::next(m.begin(), 2)->second == 7.5);
+
+        s = m.erase(7);
+        assert(m.size() == 2);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+
+        s = m.erase(2);
+        assert(m.size() == 1);
+        assert(s == 1);
+        assert(m.begin()->first == 5);
+        assert(m.begin()->second == 5.5);
+
+        s = m.erase(5);
+        assert(m.size() == 0);
+        assert(s == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        typedef M::size_type R;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        R s = m.erase(9);
+        assert(s == 0);
+        assert(m.size() == 8);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 4);
+        assert(std::next(m.begin(), 3)->second == 4.5);
+        assert(std::next(m.begin(), 4)->first == 5);
+        assert(std::next(m.begin(), 4)->second == 5.5);
+        assert(std::next(m.begin(), 5)->first == 6);
+        assert(std::next(m.begin(), 5)->second == 6.5);
+        assert(std::next(m.begin(), 6)->first == 7);
+        assert(std::next(m.begin(), 6)->second == 7.5);
+        assert(std::next(m.begin(), 7)->first == 8);
+        assert(std::next(m.begin(), 7)->second == 8.5);
+
+        s = m.erase(4);
+        assert(m.size() == 7);
+        assert(s == 1);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 5);
+        assert(std::next(m.begin(), 3)->second == 5.5);
+        assert(std::next(m.begin(), 4)->first == 6);
+        assert(std::next(m.begin(), 4)->second == 6.5);
+        assert(std::next(m.begin(), 5)->first == 7);
+        assert(std::next(m.begin(), 5)->second == 7.5);
+        assert(std::next(m.begin(), 6)->first == 8);
+        assert(std::next(m.begin(), 6)->second == 8.5);
+
+        s = m.erase(1);
+        assert(m.size() == 6);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        s = m.erase(8);
+        assert(m.size() == 5);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 3);
+        assert(std::next(m.begin())->second == 3.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+
+        s = m.erase(3);
+        assert(m.size() == 4);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 6);
+        assert(std::next(m.begin(), 2)->second == 6.5);
+        assert(std::next(m.begin(), 3)->first == 7);
+        assert(std::next(m.begin(), 3)->second == 7.5);
+
+        s = m.erase(6);
+        assert(m.size() == 3);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+        assert(std::next(m.begin(), 2)->first == 7);
+        assert(std::next(m.begin(), 2)->second == 7.5);
+
+        s = m.erase(7);
+        assert(m.size() == 2);
+        assert(s == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 2.5);
+        assert(std::next(m.begin())->first == 5);
+        assert(std::next(m.begin())->second == 5.5);
+
+        s = m.erase(2);
+        assert(m.size() == 1);
+        assert(s == 1);
+        assert(m.begin()->first == 5);
+        assert(m.begin()->second == 5.5);
+
+        s = m.erase(5);
+        assert(m.size() == 0);
+        assert(s == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/extract_iterator.pass.cpp
new file mode 100644
index 0000000..b036531
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/extract_iterator.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// node_type extract(const_iterator);
+
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    auto some_key = c.cbegin()->first;
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = first->first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.key() == key_value);
+        t.key() = some_key;
+        assert(t.key() == some_key);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using map_type = std::map<int, int>;
+        map_type m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        test(m);
+    }
+
+    {
+        std::map<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        assert(Counter_base::gConstructed == 12);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::map<int, int, std::less<int>,
+                     min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/extract_key.pass.cpp
new file mode 100644
index 0000000..80e7e1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/extract_key.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// node_type extract(key_type const&);
+
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.key() == *copy);
+        t.key() = *first; // We should be able to mutate key.
+        assert(t.key() == *first);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::map<int, int> m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::map<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 12+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::map<int, int, std::less<int>,
+                     min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..fb1251c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// insert(...);
+// emplace(...);
+// emplace_hint(...);
+
+// UNSUPPORTED: c++03
+
+#include <map>
+
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../../map_allocator_requirement_test_templates.h"
+
+int main(int, char**)
+{
+  testMapInsert<TCT::map<> >();
+  testMapInsertHint<TCT::map<> >();
+  testMapEmplace<TCT::map<> >();
+  testMapEmplaceHint<TCT::map<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_cv.pass.cpp
new file mode 100644
index 0000000..a243644
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_cv.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// pair<iterator, bool> insert(const value_type& v);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+void do_insert_cv_test()
+{
+    typedef Container M;
+    typedef std::pair<typename M::iterator, bool> R;
+    typedef typename M::value_type VT;
+    M m;
+
+    const VT v1(2, 2.5);
+    R r = m.insert(v1);
+    assert(r.second);
+    assert(r.first == m.begin());
+    assert(m.size() == 1);
+    assert(r.first->first == 2);
+    assert(r.first->second == 2.5);
+
+    const VT v2(1, 1.5);
+    r = m.insert(v2);
+    assert(r.second);
+    assert(r.first == m.begin());
+    assert(m.size() == 2);
+    assert(r.first->first == 1);
+    assert(r.first->second == 1.5);
+
+    const VT v3(3, 3.5);
+    r = m.insert(v3);
+    assert(r.second);
+    assert(r.first == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r.first->first == 3);
+    assert(r.first->second == 3.5);
+
+    const VT v4(3, 4.5);
+    r = m.insert(v4);
+    assert(!r.second);
+    assert(r.first == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r.first->first == 3);
+    assert(r.first->second == 3.5);
+}
+
+int main(int, char**)
+{
+    do_insert_cv_test<std::map<int, double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        do_insert_cv_test<M>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_initializer_list.pass.cpp
new file mode 100644
index 0000000..313e461
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_initializer_list.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// void insert(initializer_list<value_type> il);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    std::map<int, double> m =
+                            {
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                            };
+    m.insert({
+                 {2, 1},
+                 {2, 1.5},
+                 {2, 2},
+             });
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    std::map<int, double, std::less<int>, min_allocator<V>> m =
+                            {
+                                {1, 1},
+                                {1, 1.5},
+                                {1, 2},
+                                {3, 1},
+                                {3, 1.5},
+                                {3, 2}
+                            };
+    m.insert({
+                 {2, 1},
+                 {2, 1.5},
+                 {2, 2},
+             });
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(2, 1));
+    assert(*std::next(m.begin(), 2) == V(3, 1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_cv.pass.cpp
new file mode 100644
index 0000000..6260fd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_cv.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// iterator insert(const_iterator position, const value_type& v);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+void do_insert_iter_cv_test()
+{
+    typedef Container M;
+    typedef typename M::iterator R;
+    typedef typename M::value_type VT;
+
+    M m;
+    const VT v1(2, 2.5);
+    R r = m.insert(m.end(), v1);
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(r->first == 2);
+    assert(r->second == 2.5);
+
+    const VT v2(1, 1.5);
+    r = m.insert(m.end(), v2);
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(r->first == 1);
+    assert(r->second == 1.5);
+
+    const VT v3(3, 3.5);
+    r = m.insert(m.end(), v3);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3.5);
+
+    const VT v4(3, 4.5);
+    r = m.insert(m.end(), v4);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3.5);
+}
+
+int main(int, char**)
+{
+    do_insert_iter_cv_test<std::map<int, double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        do_insert_iter_cv_test<M>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_iter.pass.cpp
new file mode 100644
index 0000000..b2b2ad1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_iter.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// template <class InputIterator>
+//   void insert(InputIterator first, InputIterator last);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::map<int, double> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m;
+        m.insert(cpp17_input_iterator<P*>(ar), cpp17_input_iterator<P*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 3);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 1);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m;
+        m.insert(cpp17_input_iterator<P*>(ar), cpp17_input_iterator<P*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 3);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 1);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_rv.pass.cpp
new file mode 100644
index 0000000..443271d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_iter_rv.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// template <class P>
+//     iterator insert(const_iterator position, P&& p);
+
+#include <map>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "test_macros.h"
+
+template <class Container, class Pair>
+void do_insert_iter_rv_test()
+{
+    typedef Container M;
+    typedef Pair P;
+    typedef typename M::iterator R;
+    M m;
+    R r = m.insert(m.end(), P(2, 2));
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(r->first == 2);
+    assert(r->second == 2);
+
+    r = m.insert(m.end(), P(1, 1));
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(r->first == 1);
+    assert(r->second == 1);
+
+    r = m.insert(m.end(), P(3, 3));
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3);
+
+    r = m.insert(m.end(), P(3, 4));
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3);
+}
+int main(int, char**)
+{
+    do_insert_iter_rv_test<std::map<int, MoveOnly>, std::pair<int, MoveOnly>>();
+    do_insert_iter_rv_test<std::map<int, MoveOnly>, std::pair<const int, MoveOnly>>();
+
+    {
+        typedef std::map<int, MoveOnly, std::less<int>, min_allocator<std::pair<const int, MoveOnly>>> M;
+        typedef std::pair<int, MoveOnly> P;
+        typedef std::pair<const int, MoveOnly> CP;
+        do_insert_iter_rv_test<M, P>();
+        do_insert_iter_rv_test<M, CP>();
+    }
+    {
+        typedef std::map<int, MoveOnly> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.end(), {2, MoveOnly(2)});
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(r->first == 2);
+        assert(r->second == 2);
+
+        r = m.insert(m.end(), {1, MoveOnly(1)});
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(r->first == 1);
+        assert(r->second == 1);
+
+        r = m.insert(m.end(), {3, MoveOnly(3)});
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = m.insert(m.end(), {3, MoveOnly(3)});
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(r->first == 3);
+        assert(r->second == 3);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_node_type.pass.cpp
new file mode 100644
index 0000000..6445cd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_node_type.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// insert_return_type insert(node_type&&);
+
+#include <map>
+#include <type_traits>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto p = c.insert({key, mapped});
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        typename Container::insert_return_type irt = c.insert(std::move(node));
+        assert(node.empty());
+        assert(irt.inserted);
+        assert(irt.node.empty());
+        assert(irt.position->first == i && irt.position->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto irt = c.insert(std::move(def));
+        assert(def.empty());
+        assert(!irt.inserted);
+        assert(irt.node.empty());
+        assert(irt.position == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0, 42);
+        auto irt = c.insert(std::move(dupl));
+        assert(dupl.empty());
+        assert(!irt.inserted);
+        assert(!irt.node.empty());
+        assert(irt.position == c.find(0));
+        assert(irt.node.key() == 0 && irt.node.mapped() == 42);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c[i] == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::map<int, int> m;
+    test(m);
+    std::map<int, int, std::less<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..1d09443
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_node_type_hint.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto p = c.insert({key, mapped});
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(node.empty());
+        assert(prev + 1 == c.size());
+        assert(it->first == i);
+        assert(it->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c[i] == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::map<int, int> m;
+    test(m);
+    std::map<int, int, std::less<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_or_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_or_assign.pass.cpp
new file mode 100644
index 0000000..633d9ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_or_assign.pass.cpp
@@ -0,0 +1,288 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// template <class M>
+//  pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);            // C++17
+// template <class M>
+//  pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);                 // C++17
+// template <class M>
+//  iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);   // C++17
+// template <class M>
+//  iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);        // C++17
+
+#include <map>
+#include <cassert>
+#include <tuple>
+
+#include "test_macros.h"
+
+class Moveable
+{
+    Moveable(const Moveable&);
+    Moveable& operator=(const Moveable&);
+
+    int int_;
+    double double_;
+public:
+    Moveable() : int_(0), double_(0) {}
+    Moveable(int i, double d) : int_(i), double_(d) {}
+    Moveable(Moveable&& x)
+        : int_(x.int_), double_(x.double_)
+            {x.int_ = -1; x.double_ = -1;}
+    Moveable& operator=(Moveable&& x)
+        {int_ = x.int_; x.int_ = -1;
+         double_ = x.double_; x.double_ = -1;
+         return *this;
+        }
+
+    bool operator==(const Moveable& x) const
+        {return int_ == x.int_ && double_ == x.double_;}
+    bool operator<(const Moveable& x) const
+        {return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);}
+
+    int get() const {return int_;}
+    bool moved() const {return int_ == -1;}
+};
+
+
+int main(int, char**)
+{
+    { // pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);
+        typedef std::map<int, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+
+        for (int i=0; i < 20; i += 2)
+        {
+            Moveable mv(i+1, i+1);
+            r = m.insert_or_assign(i, std::move(mv));
+            assert(m.size() == 10);
+            assert(!r.second);                    // was not inserted
+            assert(mv.moved());                   // was moved from
+            assert(r.first->first == i);          // key
+            assert(r.first->second.get() == i+1); // value
+        }
+
+        Moveable mv1(5, 5.0);
+        r = m.insert_or_assign(-1, std::move(mv1));
+        assert(m.size() == 11);
+        assert(r.second);                    // was inserted
+        assert(mv1.moved());                 // was moved from
+        assert(r.first->first        == -1); // key
+        assert(r.first->second.get() == 5);  // value
+
+        Moveable mv2(9, 9.0);
+        r = m.insert_or_assign(3, std::move(mv2));
+        assert(m.size() == 12);
+        assert(r.second);                   // was inserted
+        assert(mv2.moved());                // was moved from
+        assert(r.first->first        == 3); // key
+        assert(r.first->second.get() == 9); // value
+
+        Moveable mv3(-1, 5.0);
+        r = m.insert_or_assign(117, std::move(mv3));
+        assert(m.size() == 13);
+        assert(r.second);                     // was inserted
+        assert(mv3.moved());                  // was moved from
+        assert(r.first->first        == 117); // key
+        assert(r.first->second.get() == -1);  // value
+    }
+    { // pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);
+        typedef std::map<Moveable, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.insert_or_assign(std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(!r.second);                  // was not inserted
+        assert(!mvkey1.moved());            // was not moved from
+        assert(mv1.moved());                // was moved from
+        assert(r.first->first == mvkey1);   // key
+        assert(r.first->second.get() == 4); // value
+
+        Moveable mvkey2(3, 3.0);
+        Moveable mv2(5, 5.0);
+        r = m.try_emplace(std::move(mvkey2), std::move(mv2));
+        assert(m.size() == 11);
+        assert(r.second);                   // was inserted
+        assert(mv2.moved());                // was moved from
+        assert(mvkey2.moved());             // was moved from
+        assert(r.first->first.get()  == 3); // key
+        assert(r.first->second.get() == 5); // value
+    }
+    { // iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);
+        typedef std::map<int, Moveable> M;
+        M m;
+        M::iterator r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+        M::const_iterator it = m.find(2);
+
+        Moveable mv1(3, 3.0);
+        r = m.insert_or_assign(it, 2, std::move(mv1));
+        assert(m.size() == 10);
+        assert(mv1.moved());           // was moved from
+        assert(r->first        == 2);  // key
+        assert(r->second.get() == 3);  // value
+
+        Moveable mv2(5, 5.0);
+        r = m.insert_or_assign(it, 3, std::move(mv2));
+        assert(m.size() == 11);
+        assert(mv2.moved());           // was moved from
+        assert(r->first        == 3);  // key
+        assert(r->second.get() == 5);  // value
+
+        // wrong hint: begin()
+        Moveable mv3(7, 7.0);
+        r = m.insert_or_assign(m.begin(), 4, std::move(mv3));
+        assert(m.size() == 11);
+        assert(mv3.moved());           // was moved from
+        assert(r->first        == 4);  // key
+        assert(r->second.get() == 7);  // value
+
+        Moveable mv4(9, 9.0);
+        r = m.insert_or_assign(m.begin(), 5, std::move(mv4));
+        assert(m.size() == 12);
+        assert(mv4.moved());           // was moved from
+        assert(r->first        == 5);  // key
+        assert(r->second.get() == 9);  // value
+
+        // wrong hint: end()
+        Moveable mv5(11, 11.0);
+        r = m.insert_or_assign(m.end(), 6, std::move(mv5));
+        assert(m.size() == 12);
+        assert(mv5.moved());           // was moved from
+        assert(r->first        == 6);  // key
+        assert(r->second.get() == 11); // value
+
+        Moveable mv6(13, 13.0);
+        r = m.insert_or_assign(m.end(), 7, std::move(mv6));
+        assert(m.size() == 13);
+        assert(mv6.moved());           // was moved from
+        assert(r->first        == 7);  // key
+        assert(r->second.get() == 13); // value
+
+        // wrong hint: third element
+        Moveable mv7(15, 15.0);
+        r = m.insert_or_assign(std::next(m.begin(), 2), 8, std::move(mv7));
+        assert(m.size() == 13);
+        assert(mv7.moved());           // was moved from
+        assert(r->first        == 8);  // key
+        assert(r->second.get() == 15); // value
+
+        Moveable mv8(17, 17.0);
+        r = m.insert_or_assign(std::next(m.begin(), 2), 9, std::move(mv8));
+        assert(m.size() == 14);
+        assert(mv8.moved());           // was moved from
+        assert(r->first        == 9);  // key
+        assert(r->second.get() == 17); // value
+    }
+    { // iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);
+        typedef std::map<Moveable, Moveable> M;
+        M m;
+        M::iterator r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+        M::const_iterator it = std::next(m.cbegin());
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.insert_or_assign(it, std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(mv1.moved());          // was moved from
+        assert(!mvkey1.moved());      // was not moved from
+        assert(r->first == mvkey1);   // key
+        assert(r->second.get() == 4); // value
+
+        Moveable mvkey2(3, 3.0);
+        Moveable mv2(5, 5.0);
+        r = m.insert_or_assign(it, std::move(mvkey2), std::move(mv2));
+        assert(m.size() == 11);
+        assert(mv2.moved());           // was moved from
+        assert(mvkey2.moved());        // was moved from
+        assert(r->first.get()  == 3);  // key
+        assert(r->second.get() == 5);  // value
+
+        // wrong hint: begin()
+        Moveable mvkey3(6, 6.0);
+        Moveable mv3(8, 8.0);
+        r = m.insert_or_assign(m.begin(), std::move(mvkey3), std::move(mv3));
+        assert(m.size() == 11);
+        assert(mv3.moved());           // was moved from
+        assert(!mvkey3.moved());       // was not moved from
+        assert(r->first == mvkey3);    // key
+        assert(r->second.get() == 8);  // value
+
+        Moveable mvkey4(7, 7.0);
+        Moveable mv4(9, 9.0);
+        r = m.insert_or_assign(m.begin(), std::move(mvkey4), std::move(mv4));
+        assert(m.size() == 12);
+        assert(mv4.moved());           // was moved from
+        assert(mvkey4.moved());        // was moved from
+        assert(r->first.get()  == 7);  // key
+        assert(r->second.get() == 9);  // value
+
+        // wrong hint: end()
+        Moveable mvkey5(8, 8.0);
+        Moveable mv5(10, 10.0);
+        r = m.insert_or_assign(m.end(), std::move(mvkey5), std::move(mv5));
+        assert(m.size() == 12);
+        assert(mv5.moved());           // was moved from
+        assert(!mvkey5.moved());       // was not moved from
+        assert(r->first == mvkey5);    // key
+        assert(r->second.get() == 10); // value
+
+        Moveable mvkey6(9, 9.0);
+        Moveable mv6(11, 11.0);
+        r = m.insert_or_assign(m.end(), std::move(mvkey6), std::move(mv6));
+        assert(m.size() == 13);
+        assert(mv6.moved());           // was moved from
+        assert(mvkey6.moved());        // was moved from
+        assert(r->first.get()  == 9);  // key
+        assert(r->second.get() == 11); // value
+
+        // wrong hint: third element
+        Moveable mvkey7(10, 10.0);
+        Moveable mv7(12, 12.0);
+        r = m.insert_or_assign(std::next(m.begin(), 2), std::move(mvkey7), std::move(mv7));
+        assert(m.size() == 13);
+        assert(mv7.moved());           // was moved from
+        assert(!mvkey7.moved());       // was not moved from
+        assert(r->first == mvkey7);    // key
+        assert(r->second.get() == 12); // value
+
+        Moveable mvkey8(11, 11.0);
+        Moveable mv8(13, 13.0);
+        r = m.insert_or_assign(std::next(m.begin(), 2), std::move(mvkey8), std::move(mv8));
+        assert(m.size() == 14);
+        assert(mv8.moved());           // was moved from
+        assert(mvkey8.moved());        // was moved from
+        assert(r->first.get()  == 11); // key
+        assert(r->second.get() == 13); // value
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_rv.pass.cpp
new file mode 100644
index 0000000..afb5bba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/insert_rv.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class map
+
+// pair<iterator, bool> insert( value_type&& v);  // C++17 and later
+// template <class P>
+//   pair<iterator, bool> insert(P&& p);
+
+#include <map>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "test_macros.h"
+
+template <class Container, class Pair>
+void do_insert_rv_test()
+{
+    typedef Container M;
+    typedef Pair P;
+    typedef std::pair<typename M::iterator, bool> R;
+    M m;
+    R r = m.insert(P(2, 2));
+    assert(r.second);
+    assert(r.first == m.begin());
+    assert(m.size() == 1);
+    assert(r.first->first == 2);
+    assert(r.first->second == 2);
+
+    r = m.insert(P(1, 1));
+    assert(r.second);
+    assert(r.first == m.begin());
+    assert(m.size() == 2);
+    assert(r.first->first == 1);
+    assert(r.first->second == 1);
+
+    r = m.insert(P(3, 3));
+    assert(r.second);
+    assert(r.first == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r.first->first == 3);
+    assert(r.first->second == 3);
+
+    r = m.insert(P(3, 3));
+    assert(!r.second);
+    assert(r.first == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r.first->first == 3);
+    assert(r.first->second == 3);
+}
+
+int main(int, char**)
+{
+    do_insert_rv_test<std::map<int, MoveOnly>, std::pair<int, MoveOnly>>();
+    do_insert_rv_test<std::map<int, MoveOnly>, std::pair<const int, MoveOnly>>();
+
+    {
+        typedef std::map<int, MoveOnly, std::less<int>, min_allocator<std::pair<const int, MoveOnly>>> M;
+        typedef std::pair<int, MoveOnly> P;
+        typedef std::pair<const int, MoveOnly> CP;
+        do_insert_rv_test<M, P>();
+        do_insert_rv_test<M, CP>();
+    }
+    {
+        typedef std::map<int, MoveOnly> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.insert({2, MoveOnly(2)});
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(r.first->first == 2);
+        assert(r.first->second == 2);
+
+        r = m.insert({1, MoveOnly(1)});
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(r.first->first == 1);
+        assert(r.first->second == 1);
+
+        r = m.insert({3, MoveOnly(3)});
+        assert(r.second);
+        assert(r.first == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(r.first->first == 3);
+        assert(r.first->second == 3);
+
+        r = m.insert({3, MoveOnly(3)});
+        assert(!r.second);
+        assert(r.first == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(r.first->first == 3);
+        assert(r.first->second == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp
new file mode 100644
index 0000000..d760658
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// template <class C2>
+//   void merge(map<key_type, value_type, C2, allocator_type>& source);
+// template <class C2>
+//   void merge(map<key_type, value_type, C2, allocator_type>&& source);
+// template <class C2>
+//   void merge(multimap<key_type, value_type, C2, allocator_type>& source);
+// template <class C2>
+//   void merge(multimap<key_type, value_type, C2, allocator_type>&& source);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Map>
+bool map_equal(const Map& map, Map other)
+{
+    return map == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct throw_comparator
+{
+    bool& should_throw_;
+
+    throw_comparator(bool& should_throw) : should_throw_(should_throw) {}
+
+    template <class T>
+    bool operator()(const T& lhs, const T& rhs) const
+    {
+        if (should_throw_)
+            throw 0;
+        return lhs < rhs;
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::map<int, int> src{{1, 0}, {3, 0}, {5, 0}};
+        std::map<int, int> dst{{2, 0}, {4, 0}, {5, 0}};
+        dst.merge(src);
+        assert(map_equal(src, {{5,0}}));
+        assert(map_equal(dst, {{1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::map<Counter<int>, int, throw_comparator> map_type;
+        map_type src({{1, 0}, {3, 0}, {5, 0}}, throw_comparator(do_throw));
+        map_type dst({{2, 0}, {4, 0}, {5, 0}}, throw_comparator(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(map_equal(src, map_type({{1, 0}, {3, 0}, {5, 0}}, throw_comparator(do_throw))));
+        assert(map_equal(dst, map_type({{2, 0}, {4, 0}, {5, 0}}, throw_comparator(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct comparator
+    {
+        comparator() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs < rhs;
+        }
+    };
+    {
+        typedef std::map<Counter<int>, int, std::less<Counter<int>>> first_map_type;
+        typedef std::map<Counter<int>, int, comparator> second_map_type;
+        typedef std::multimap<Counter<int>, int, comparator> third_map_type;
+
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(map_equal(first, {{1, 0}, {2, 0}, {3, 0}, {4, 0}}));
+            assert(map_equal(second, {{2, 0}, {3, 0}}));
+            assert(map_equal(third, {{1, 0}, {3, 0}}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(map_equal(first, {{1, 0}, {2, 0}, {3, 0}, {4, 0}}));
+            assert(map_equal(second, {{2, 0}, {3, 0}}));
+            assert(map_equal(third, {{1, 0}, {3, 0}}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    assert(Counter_base::gConstructed == 0);
+    {
+        std::map<int, int> first;
+        {
+            std::map<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::multimap<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/try.emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/try.emplace.pass.cpp
new file mode 100644
index 0000000..cfa0921
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.modifiers/try.emplace.pass.cpp
@@ -0,0 +1,185 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class map
+
+// template <class... Args>
+//  pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);          // C++17
+// template <class... Args>
+//  pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);               // C++17
+// template <class... Args>
+//  iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args); // C++17
+// template <class... Args>
+//  iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);      // C++17
+
+#include <map>
+#include <cassert>
+#include <tuple>
+
+#include "test_macros.h"
+
+class Moveable
+{
+    Moveable(const Moveable&);
+    Moveable& operator=(const Moveable&);
+
+    int int_;
+    double double_;
+public:
+    Moveable() : int_(0), double_(0) {}
+    Moveable(int i, double d) : int_(i), double_(d) {}
+    Moveable(Moveable&& x)
+        : int_(x.int_), double_(x.double_)
+            {x.int_ = -1; x.double_ = -1;}
+    Moveable& operator=(Moveable&& x)
+        {int_ = x.int_; x.int_ = -1;
+         double_ = x.double_; x.double_ = -1;
+         return *this;
+        }
+
+    bool operator==(const Moveable& x) const
+        {return int_ == x.int_ && double_ == x.double_;}
+    bool operator<(const Moveable& x) const
+        {return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);}
+
+    int get() const {return int_;}
+    bool moved() const {return int_ == -1;}
+};
+
+
+int main(int, char**)
+{
+    { // pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);
+        typedef std::map<int, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace (i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+
+        Moveable mv1(3, 3.0);
+        for (int i=0; i < 20; i += 2)
+        {
+            r = m.try_emplace(i, std::move(mv1));
+            assert(m.size() == 10);
+            assert(!r.second);              // was not inserted
+            assert(!mv1.moved());           // was not moved from
+            assert(r.first->first == i);    // key
+        }
+
+        r = m.try_emplace(-1, std::move(mv1));
+        assert(m.size() == 11);
+        assert(r.second);                   // was inserted
+        assert(mv1.moved());                // was moved from
+        assert(r.first->first == -1);       // key
+        assert(r.first->second.get() == 3); // value
+
+        Moveable mv2(5, 3.0);
+        r = m.try_emplace(5, std::move(mv2));
+        assert(m.size() == 12);
+        assert(r.second);                   // was inserted
+        assert(mv2.moved());                // was moved from
+        assert(r.first->first == 5);        // key
+        assert(r.first->second.get() == 5); // value
+
+        Moveable mv3(-1, 3.0);
+        r = m.try_emplace(117, std::move(mv2));
+        assert(m.size() == 13);
+        assert(r.second);                    // was inserted
+        assert(mv2.moved());                 // was moved from
+        assert(r.first->first == 117);       // key
+        assert(r.first->second.get() == -1); // value
+    }
+
+    {  // pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);
+        typedef std::map<Moveable, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.try_emplace(std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(!r.second);                 // was not inserted
+        assert(!mv1.moved());              // was not moved from
+        assert(!mvkey1.moved());           // was not moved from
+        assert(r.first->first == mvkey1);  // key
+
+        Moveable mvkey2(3, 3.0);
+        r = m.try_emplace(std::move(mvkey2), std::move(mv1));
+        assert(m.size() == 11);
+        assert(r.second);                   // was inserted
+        assert(mv1.moved());                // was moved from
+        assert(mvkey2.moved());             // was moved from
+        assert(r.first->first.get()  == 3); // key
+        assert(r.first->second.get() == 4); // value
+    }
+
+    {  // iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args);
+        typedef std::map<int, Moveable> M;
+        M m;
+        M::iterator r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.try_emplace ( i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+        M::const_iterator it = m.find(2);
+
+        Moveable mv1(3, 3.0);
+        for (int i=0; i < 20; i += 2)
+        {
+            r = m.try_emplace(it, i, std::move(mv1));
+            assert(m.size() == 10);
+            assert(!mv1.moved());         // was not moved from
+            assert(r->first == i);        // key
+            assert(r->second.get() == i); // value
+        }
+
+        r = m.try_emplace(it, 3, std::move(mv1));
+        assert(m.size() == 11);
+        assert(mv1.moved());          // was moved from
+        assert(r->first == 3);        // key
+        assert(r->second.get() == 3); // value
+    }
+
+    {  // iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);
+        typedef std::map<Moveable, Moveable> M;
+        M m;
+        M::iterator r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+        M::const_iterator it = std::next(m.cbegin());
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.try_emplace(it, std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(!mv1.moved());        // was not moved from
+        assert(!mvkey1.moved());     // was not moved from
+        assert(r->first == mvkey1);  // key
+
+        Moveable mvkey2(3, 3.0);
+        r = m.try_emplace(it, std::move(mvkey2), std::move(mv1));
+        assert(m.size() == 11);
+        assert(mv1.moved());          // was moved from
+        assert(mvkey2.moved());       // was moved from
+        assert(r->first.get()  == 3); // key
+        assert(r->second.get() == 4); // value
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.nonmember/op_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.nonmember/op_compare.pass.cpp
new file mode 100644
index 0000000..21d7669
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.nonmember/op_compare.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator==(const std::map<Key, T, Compare, Alloc>& lhs,
+//                 const std::map<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator!=(const std::map<Key, T, Compare, Alloc>& lhs,
+//                 const std::map<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator<(const std::map<Key, T, Compare, Alloc>& lhs,
+//                const std::map<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator>(const std::map<Key, T, Compare, Alloc>& lhs,
+//                const std::map<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator<=(const std::map<Key, T, Compare, Alloc>& lhs,
+//                 const std::map<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator>=(const std::map<Key, T, Compare, Alloc>& lhs,
+//                 const std::map<Key, T, Compare, Alloc>& rhs);
+
+#include <map>
+#include <cassert>
+#include <string>
+
+#include "test_comparisons.h"
+
+int main(int, char**) {
+    typedef std::map<int, std::string> map_type;
+    typedef map_type::value_type value_type;
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(2, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, true, false));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "ab"));
+        m2.insert(value_type(1, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "bcd"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "abc"));
+        m2.insert(value_type(2, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.observers/key_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.observers/key_comp.pass.cpp
new file mode 100644
index 0000000..f44e78f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.observers/key_comp.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// key_compare key_comp() const;
+
+#include <map>
+#include <cassert>
+#include <string>
+
+int main(int, char**) {
+    typedef std::map<int, std::string> map_type;
+
+    map_type m;
+    std::pair<map_type::iterator, bool> p1 = m.insert(map_type::value_type(1, "abc"));
+    std::pair<map_type::iterator, bool> p2 = m.insert(map_type::value_type(2, "abc"));
+
+    const map_type& cm = m;
+
+    assert(cm.key_comp()(p1.first->first, p2.first->first));
+    assert(!cm.key_comp()(p2.first->first, p1.first->first));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.observers/value_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.observers/value_comp.pass.cpp
new file mode 100644
index 0000000..02b9659
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.observers/value_comp.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// value_compare value_comp() const;
+
+#include <map>
+#include <cassert>
+#include <string>
+
+int main(int, char**) {
+    typedef std::map<int, std::string> map_type;
+
+    map_type m;
+    std::pair<map_type::iterator, bool> p1 = m.insert(map_type::value_type(1, "abc"));
+    std::pair<map_type::iterator, bool> p2 = m.insert(map_type::value_type(2, "abc"));
+
+    const map_type& cm = m;
+
+    assert(cm.value_comp()(*p1.first, *p2.first));
+    assert(!cm.value_comp()(*p2.first, *p1.first));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/contains.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/contains.pass.cpp
new file mode 100644
index 0000000..4221dc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/contains.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <map>
+
+// <map>
+
+// bool contains(const key_type& x) const;
+
+template <typename T, typename P, typename B, typename... Pairs>
+void test(B bad, Pairs... args) {
+    T map;
+    P pairs[] = {args...};
+
+    for (auto& p : pairs) map.insert(p);
+    for (auto& p : pairs) assert(map.contains(p.first));
+
+    assert(!map.contains(bad));
+}
+
+struct E { int a = 1; double b = 1; char c = 1; };
+
+int main(int, char**)
+{
+    {
+        test<std::map<char, int>, std::pair<char, int> >(
+            'e', std::make_pair('a', 10), std::make_pair('b', 11),
+            std::make_pair('c', 12), std::make_pair('d', 13));
+
+        test<std::map<char, char>, std::pair<char, char> >(
+            'e', std::make_pair('a', 'a'), std::make_pair('b', 'a'),
+            std::make_pair('c', 'a'), std::make_pair('d', 'b'));
+
+        test<std::map<int, E>, std::pair<int, E> >(
+            -1, std::make_pair(1, E{}), std::make_pair(2, E{}),
+            std::make_pair(3, E{}), std::make_pair(4, E{}));
+    }
+    {
+        test<std::multimap<char, int>, std::pair<char, int> >(
+            'e', std::make_pair('a', 10), std::make_pair('b', 11),
+            std::make_pair('c', 12), std::make_pair('d', 13));
+
+        test<std::multimap<char, char>, std::pair<char, char> >(
+            'e', std::make_pair('a', 'a'), std::make_pair('b', 'a'),
+            std::make_pair('c', 'a'), std::make_pair('d', 'b'));
+
+        test<std::multimap<int, E>, std::pair<int, E> >(
+            -1, std::make_pair(1, E{}), std::make_pair(2, E{}),
+            std::make_pair(3, E{}), std::make_pair(4, E{}));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/contains_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/contains_transparent.pass.cpp
new file mode 100644
index 0000000..c5543a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/contains_transparent.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <map>
+
+// <map>
+
+// template<class K> bool contains(const K& x) const; // C++20
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int>& lhs,
+                  const std::pair<int, int>& rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int>& lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int>& rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+template <typename Container>
+void test() {
+  Container s{{{2, 1}, 1}, {{1, 2}, 2}, {{1, 3}, 3}, {{1, 4}, 4}, {{2, 2}, 5}};
+
+  assert(s.contains(1));
+  assert(!s.contains(-1));
+}
+
+int main(int, char**) {
+  test<std::map<std::pair<int, int>, int, Comp> >();
+  test<std::multimap<std::pair<int, int>, int, Comp> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count.pass.cpp
new file mode 100644
index 0000000..138c5fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// size_type count(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double> M;
+    {
+        typedef M::size_type R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(5);
+        assert(r == 1);
+        r = m.count(6);
+        assert(r == 1);
+        r = m.count(7);
+        assert(r == 1);
+        r = m.count(8);
+        assert(r == 1);
+        r = m.count(9);
+        assert(r == 1);
+        r = m.count(10);
+        assert(r == 1);
+        r = m.count(11);
+        assert(r == 1);
+        r = m.count(12);
+        assert(r == 1);
+        r = m.count(4);
+        assert(r == 0);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        typedef M::size_type R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(5);
+        assert(r == 1);
+        r = m.count(6);
+        assert(r == 1);
+        r = m.count(7);
+        assert(r == 1);
+        r = m.count(8);
+        assert(r == 1);
+        r = m.count(9);
+        assert(r == 1);
+        r = m.count(10);
+        assert(r == 1);
+        r = m.count(11);
+        assert(r == 1);
+        r = m.count(12);
+        assert(r == 1);
+        r = m.count(4);
+        assert(r == 0);
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less <>> M;
+    typedef M::size_type R;
+
+    V ar[] =
+    {
+        V(5, 5),
+        V(6, 6),
+        V(7, 7),
+        V(8, 8),
+        V(9, 9),
+        V(10, 10),
+        V(11, 11),
+        V(12, 12)
+    };
+    const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.count(5);
+    assert(r == 1);
+    r = m.count(6);
+    assert(r == 1);
+    r = m.count(7);
+    assert(r == 1);
+    r = m.count(8);
+    assert(r == 1);
+    r = m.count(9);
+    assert(r == 1);
+    r = m.count(10);
+    assert(r == 1);
+    r = m.count(11);
+    assert(r == 1);
+    r = m.count(12);
+    assert(r == 1);
+    r = m.count(4);
+    assert(r == 0);
+
+    r = m.count(C2Int(5));
+    assert(r == 1);
+    r = m.count(C2Int(6));
+    assert(r == 1);
+    r = m.count(C2Int(7));
+    assert(r == 1);
+    r = m.count(C2Int(8));
+    assert(r == 1);
+    r = m.count(C2Int(9));
+    assert(r == 1);
+    r = m.count(C2Int(10));
+    assert(r == 1);
+    r = m.count(C2Int(11));
+    assert(r == 1);
+    r = m.count(C2Int(12));
+    assert(r == 1);
+    r = m.count(C2Int(4));
+    assert(r == 0);
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::map<PC, double, std::less<>> M;
+    typedef M::size_type R;
+
+    M m;
+    m [ PC::make(5)  ] = 5;
+    m [ PC::make(6)  ] = 6;
+    m [ PC::make(7)  ] = 7;
+    m [ PC::make(8)  ] = 8;
+    m [ PC::make(9)  ] = 9;
+    m [ PC::make(10) ] = 10;
+    m [ PC::make(11) ] = 11;
+    m [ PC::make(12) ] = 12;
+
+    R r = m.count(5);
+    assert(r == 1);
+    r = m.count(6);
+    assert(r == 1);
+    r = m.count(7);
+    assert(r == 1);
+    r = m.count(8);
+    assert(r == 1);
+    r = m.count(9);
+    assert(r == 1);
+    r = m.count(10);
+    assert(r == 1);
+    r = m.count(11);
+    assert(r == 1);
+    r = m.count(12);
+    assert(r == 1);
+    r = m.count(4);
+    assert(r == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count0.pass.cpp
new file mode 100644
index 0000000..aa99523
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count0.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class map
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less> M;
+    assert(M().count(C2Int{5}) == 0);
+    }
+    {
+    typedef std::map<int, double, transparent_less_not_referenceable> M;
+    assert(M().count(C2Int{5}) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count1.compile.fail.cpp
new file mode 100644
index 0000000..41463d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count1.compile.fail.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().count(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count2.compile.fail.cpp
new file mode 100644
index 0000000..2e27429
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count2.compile.fail.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().count(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count3.compile.fail.cpp
new file mode 100644
index 0000000..9f60b2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count3.compile.fail.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().count(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count_transparent.pass.cpp
new file mode 100644
index 0000000..89686c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/count_transparent.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// template<typename K>
+//   size_type count(const K& x) const;        // C++14
+
+#include <cassert>
+#include <map>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::map<std::pair<int, int>, int, Comp> s{
+      {{2, 1}, 1}, {{1, 2}, 2}, {{1, 3}, 3}, {{1, 4}, 4}, {{2, 2}, 5}};
+
+  auto cnt = s.count(1);
+  assert(cnt == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range.pass.cpp
new file mode 100644
index 0000000..00d0866
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range.pass.cpp
@@ -0,0 +1,492 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+
+    V ar[] =
+    {
+        V(5, 5),
+        V(7, 6),
+        V(9, 7),
+        V(11, 8),
+        V(13, 9),
+        V(15, 10),
+        V(17, 11),
+        V(19, 12)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.equal_range(5);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(7);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(9);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(11);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(13);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(15);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(17);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(19);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 8));
+    r = m.equal_range(4);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(6);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(8);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(10);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(12);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(14);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(16);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(18);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(20);
+    assert(r.first == std::next(m.begin(), 8));
+    assert(r.second == std::next(m.begin(), 8));
+
+    r = m.equal_range(C2Int(5));
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(C2Int(7));
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(C2Int(9));
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(C2Int(11));
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(C2Int(13));
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(C2Int(15));
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(C2Int(17));
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(C2Int(19));
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 8));
+    r = m.equal_range(C2Int(4));
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(C2Int(6));
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(C2Int(8));
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(C2Int(10));
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(C2Int(12));
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(C2Int(14));
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(C2Int(16));
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(C2Int(18));
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(C2Int(20));
+    assert(r.first == std::next(m.begin(), 8));
+    assert(r.second == std::next(m.begin(), 8));
+    }
+    {
+    typedef PrivateConstructor PC;
+    typedef std::map<PC, double, std::less<>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+
+    M m;
+    m [ PC::make(5)  ] = 5;
+    m [ PC::make(7)  ] = 6;
+    m [ PC::make(9)  ] = 7;
+    m [ PC::make(11) ] = 8;
+    m [ PC::make(13) ] = 9;
+    m [ PC::make(15) ] = 10;
+    m [ PC::make(17) ] = 11;
+    m [ PC::make(19) ] = 12;
+
+    R r = m.equal_range(5);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(7);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(9);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(11);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(13);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(15);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(17);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(19);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 8));
+    r = m.equal_range(4);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(6);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(8);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(10);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(12);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(14);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(16);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(18);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(20);
+    assert(r.first == std::next(m.begin(), 8));
+    assert(r.second == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range0.pass.cpp
new file mode 100644
index 0000000..6beb9b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range0.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class map
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less> M;
+    typedef std::pair<typename M::iterator, typename M::iterator> P;
+    M example;
+    P result = example.equal_range(C2Int{5});
+    assert(result.first == result.second);
+    }
+    {
+    typedef std::map<int, double, transparent_less_not_referenceable> M;
+    typedef std::pair<typename M::iterator, typename M::iterator> P;
+    M example;
+    P result = example.equal_range(C2Int{5});
+    assert(result.first == result.second);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range1.compile.fail.cpp
new file mode 100644
index 0000000..826d510
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().equal_range(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range2.compile.fail.cpp
new file mode 100644
index 0000000..50616cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().equal_range(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range3.compile.fail.cpp
new file mode 100644
index 0000000..b4b58d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().equal_range(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range_transparent.pass.cpp
new file mode 100644
index 0000000..10330a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/equal_range_transparent.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+// template<typename K>
+//         pair<iterator,iterator>             equal_range(const K& x); // C++14
+// template<typename K>
+//         pair<const_iterator,const_iterator> equal_range(const K& x) const;
+//         // C++14
+
+#include <cassert>
+#include <map>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::map<std::pair<int, int>, int, Comp> s{
+      {{2, 1}, 1}, {{1, 2}, 2}, {{1, 3}, 3}, {{1, 4}, 4}, {{2, 2}, 5}};
+
+  auto er = s.equal_range(1);
+  long nels = 0;
+
+  for (auto it = er.first; it != er.second; it++) {
+    assert(it->first.first == 1);
+    nels++;
+  }
+
+  assert(nels == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find.pass.cpp
new file mode 100644
index 0000000..4724162
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find.pass.cpp
@@ -0,0 +1,262 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<>> M;
+    typedef M::iterator R;
+
+    V ar[] =
+    {
+        V(5, 5),
+        V(6, 6),
+        V(7, 7),
+        V(8, 8),
+        V(9, 9),
+        V(10, 10),
+        V(11, 11),
+        V(12, 12)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == std::next(m.begin()));
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(8);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(10);
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(11);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(12);
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(4);
+    assert(r == std::next(m.begin(), 8));
+
+    r = m.find(C2Int(5));
+    assert(r == m.begin());
+    r = m.find(C2Int(6));
+    assert(r == std::next(m.begin()));
+    r = m.find(C2Int(7));
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(C2Int(8));
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(C2Int(9));
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(C2Int(10));
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(C2Int(11));
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(C2Int(12));
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(C2Int(4));
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::map<PC, double, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m [ PC::make(5)  ] = 5;
+    m [ PC::make(6)  ] = 6;
+    m [ PC::make(7)  ] = 7;
+    m [ PC::make(8)  ] = 8;
+    m [ PC::make(9)  ] = 9;
+    m [ PC::make(10) ] = 10;
+    m [ PC::make(11) ] = 11;
+    m [ PC::make(12) ] = 12;
+
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == std::next(m.begin()));
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(8);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(10);
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(11);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(12);
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(4);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find0.pass.cpp
new file mode 100644
index 0000000..6017e9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find0.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less> M;
+    M example;
+    assert(example.find(C2Int{5}) == example.end());
+    }
+    {
+    typedef std::map<int, double, transparent_less_not_referenceable> M;
+    M example;
+    assert(example.find(C2Int{5}) == example.end());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find1.compile.fail.cpp
new file mode 100644
index 0000000..358983d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().find(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find2.compile.fail.cpp
new file mode 100644
index 0000000..130f2bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().find(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find3.compile.fail.cpp
new file mode 100644
index 0000000..6340de3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/find3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().find(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound.pass.cpp
new file mode 100644
index 0000000..777b982
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound.pass.cpp
@@ -0,0 +1,374 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less <>> M;
+    typedef M::iterator R;
+
+    V ar[] =
+    {
+        V(5, 5),
+        V(7, 6),
+        V(9, 7),
+        V(11, 8),
+        V(13, 9),
+        V(15, 10),
+        V(17, 11),
+        V(19, 12)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.lower_bound(5);
+    assert(r == m.begin());
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin()));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(11);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(13);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(15);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(17);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(19);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(20);
+    assert(r == std::next(m.begin(), 8));
+
+    r = m.lower_bound(C2Int(5));
+    assert(r == m.begin());
+    r = m.lower_bound(C2Int(7));
+    assert(r == std::next(m.begin()));
+    r = m.lower_bound(C2Int(9));
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(C2Int(11));
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(C2Int(13));
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(C2Int(15));
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(C2Int(17));
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(C2Int(19));
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(C2Int(4));
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(C2Int(6));
+    assert(r == std::next(m.begin(), 1));
+    r = m.lower_bound(C2Int(8));
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(C2Int(10));
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(C2Int(12));
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(C2Int(14));
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(C2Int(16));
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(C2Int(18));
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(C2Int(20));
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::map<PC, double, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m [ PC::make(5)  ] = 5;
+    m [ PC::make(7)  ] = 6;
+    m [ PC::make(9)  ] = 7;
+    m [ PC::make(11) ] = 8;
+    m [ PC::make(13) ] = 9;
+    m [ PC::make(15) ] = 10;
+    m [ PC::make(17) ] = 11;
+    m [ PC::make(19) ] = 12;
+
+    R r = m.lower_bound(5);
+    assert(r == m.begin());
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin()));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(11);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(13);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(15);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(17);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(19);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound0.pass.cpp
new file mode 100644
index 0000000..78a4290
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound0.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less> M;
+    M example;
+    assert(example.lower_bound(C2Int{5}) == example.end());
+    }
+    {
+    typedef std::map<int, double, transparent_less_not_referenceable> M;
+    M example;
+    assert(example.lower_bound(C2Int{5}) == example.end());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound1.compile.fail.cpp
new file mode 100644
index 0000000..91ef0be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().lower_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound2.compile.fail.cpp
new file mode 100644
index 0000000..7ab8094
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().lower_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound3.compile.fail.cpp
new file mode 100644
index 0000000..09f7ac4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/lower_bound3.compile.fail.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().lower_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound.pass.cpp
new file mode 100644
index 0000000..3bacd76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound.pass.cpp
@@ -0,0 +1,337 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 5),
+            V(7, 6),
+            V(9, 7),
+            V(11, 8),
+            V(13, 9),
+            V(15, 10),
+            V(17, 11),
+            V(19, 12)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    typedef std::map<int, double, std::less<>> M;
+    typedef M::iterator R;
+    V ar[] =
+    {
+        V(5, 5),
+        V(7, 6),
+        V(9, 7),
+        V(11, 8),
+        V(13, 9),
+        V(15, 10),
+        V(17, 11),
+        V(19, 12)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(11);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(13);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(15);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(17);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(19);
+    assert(r == std::next(m.begin(), 8));
+    r = m.upper_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::map<PC, double, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m [ PC::make(5)  ] = 5;
+    m [ PC::make(7)  ] = 6;
+    m [ PC::make(9)  ] = 7;
+    m [ PC::make(11) ] = 8;
+    m [ PC::make(13) ] = 9;
+    m [ PC::make(15) ] = 10;
+    m [ PC::make(17) ] = 11;
+    m [ PC::make(19) ] = 12;
+
+    R r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(11);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(13);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(15);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(17);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(19);
+    assert(r == std::next(m.begin(), 8));
+    r = m.upper_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound0.pass.cpp
new file mode 100644
index 0000000..370c7af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound0.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less> M;
+    M example;
+    assert(example.upper_bound(C2Int{5}) == example.end());
+    }
+    {
+    typedef std::map<int, double, transparent_less_not_referenceable> M;
+    M example;
+    assert(example.upper_bound(C2Int{5}) == example.end());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound1.compile.fail.cpp
new file mode 100644
index 0000000..92003b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().upper_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound2.compile.fail.cpp
new file mode 100644
index 0000000..e02ef4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().upper_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound3.compile.fail.cpp
new file mode 100644
index 0000000..24aa859
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.ops/upper_bound3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().upper_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/member_swap.pass.cpp
new file mode 100644
index 0000000..ddce222
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/member_swap.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// void swap(map& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::map<int, double> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/non_member_swap.pass.cpp
new file mode 100644
index 0000000..18d991c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/non_member_swap.pass.cpp
@@ -0,0 +1,283 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map
+
+// template <class Key, class T, class Compare, class Allocator>
+//   void
+//   swap(map<Key, T, Compare, Allocator>& x, map<Key, T, Compare, Allocator>& y);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::map<int, double> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+    {
+        typedef test_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::map<int, double, C, A> M;
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1, 1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(1, 2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator().get_id() == 1); // not swapped
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef other_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::map<int, double, C, A> M;
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator() == A(2));
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator() == A(1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::map<int, double, std::less<int>, min_allocator<V>> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+    {
+        typedef min_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::map<int, double, C, A> M;
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A());
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A());
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator() == A());
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..96f96f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.special/swap_noexcept.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// void swap(map& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//              noexcept(swap(declval<Compare&>(), declval<Compare&>())));
+
+// This tests a conforming extension
+
+#include <map>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::map<MoveOnly, MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for comp
+    typedef std::map<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc <V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for comp
+    typedef std::map<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc2<V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for comp
+    typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc <V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for comp
+    typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc2<V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for comp
+    typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc3<V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.value_compare/invoke.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.value_compare/invoke.pass.cpp
new file mode 100644
index 0000000..2cfbb2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.value_compare/invoke.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class value_compare
+
+// bool operator()( const value_type& lhs, const value_type& rhs ) const;
+
+#include <map>
+#include <cassert>
+#include <string>
+#include <utility>
+
+template <typename Map>
+struct CallCompMember : Map::value_compare {
+    CallCompMember(const typename Map::value_compare& vc) : Map::value_compare(vc) {}
+
+    typedef typename Map::value_type value_type;
+    bool operator()(const value_type& value1, const value_type& value2) const {
+        return this->comp(value1.first, value2.first);
+    }
+};
+
+int main(int, char**) {
+    typedef std::map<int, std::string> map_type;
+
+    map_type m;
+    std::pair<map_type::iterator, bool> p1 = m.insert(map_type::value_type(1, "abc"));
+    std::pair<map_type::iterator, bool> p2 = m.insert(map_type::value_type(2, "abc"));
+
+    const map_type::value_compare vc = m.value_comp();
+    CallCompMember<map_type> call_comp = m.value_comp();
+
+    assert(vc(*p1.first, *p2.first));
+    assert(call_comp(*p1.first, *p2.first));
+
+    assert(!vc(*p2.first, *p1.first));
+    assert(!call_comp(*p2.first, *p1.first));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.value_compare/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.value_compare/types.pass.cpp
new file mode 100644
index 0000000..1d60699
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/map.value_compare/types.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class value_compare
+
+// REQUIRES: c++98 || c++03 || c++11 || c++14
+
+#include <map>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::map<int, std::string> map_type;
+    typedef map_type::value_compare value_compare;
+    typedef map_type::value_type value_type;
+
+    ASSERT_SAME_TYPE(value_compare::result_type, bool);
+    ASSERT_SAME_TYPE(value_compare::first_argument_type, value_type);
+    ASSERT_SAME_TYPE(value_compare::second_argument_type, value_type);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..4c018ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// map
+
+#include <map>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::map<int, int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(!std::ranges::random_access_range<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(!std::ranges::random_access_range<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/map/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/map/types.pass.cpp
new file mode 100644
index 0000000..0cfb7c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/map/types.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// template <class Key, class T, class Compare = less<Key>,
+//           class Allocator = allocator<pair<const Key, T>>>
+// class map
+// {
+// public:
+//     // types:
+//     typedef Key                                      key_type;
+//     typedef T                                        mapped_type;
+//     typedef pair<const key_type, mapped_type>        value_type;
+//     typedef Compare                                  key_compare;
+//     typedef Allocator                                allocator_type;
+//     typedef typename allocator_type::reference       reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     ...
+// };
+
+#include <map>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::map<int, double> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::mapped_type, double>::value), "");
+    static_assert((std::is_same<C::value_type, std::pair<const int, double> >::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, std::allocator<std::pair<const int, double> > >::value), "");
+    static_assert((std::is_same<C::reference, std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::const_reference, const std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::pointer, std::pair<const int, double>*>::value), "");
+    static_assert((std::is_same<C::const_pointer, const std::pair<const int, double>*>::value), "");
+    static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::map<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::mapped_type, double>::value), "");
+    static_assert((std::is_same<C::value_type, std::pair<const int, double> >::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<std::pair<const int, double> > >::value), "");
+    static_assert((std::is_same<C::reference, std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::const_reference, const std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<std::pair<const int, double>>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const std::pair<const int, double>>>::value), "");
+//  min_allocator doesn't have a size_type, so one gets synthesized
+    static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..47dd64e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+//   The container's value type must be the same as the allocator's value type
+
+#include <map>
+
+int main(int, char**)
+{
+    std::multimap<int, int, std::less<int>, std::allocator<long> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/empty.pass.cpp
new file mode 100644
index 0000000..45a1d76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/empty.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// bool empty() const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/empty.verify.cpp
new file mode 100644
index 0000000..dcd3b58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <map>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::multimap<int, int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/get_allocator.pass.cpp
new file mode 100644
index 0000000..41dfaa7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/get_allocator.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// allocator_type get_allocator() const
+
+#include <map>
+#include <cassert>
+#include <string>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::pair<const int, std::string> ValueType;
+    {
+        std::allocator<ValueType> alloc;
+        const std::multimap<int, std::string> m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+    {
+        other_allocator<ValueType> alloc(1);
+        const std::multimap<int, std::string, std::less<int>,
+                            other_allocator<ValueType> > m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/incomplete_type.pass.cpp
new file mode 100644
index 0000000..6e7c8e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/incomplete_type.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// Check that std::multimap and its iterators can be instantiated with an incomplete
+// type.
+
+#include <map>
+
+#include "test_macros.h"
+
+struct A {
+    typedef std::multimap<A, A> Map;
+    int data;
+    Map m;
+    Map::iterator it;
+    Map::const_iterator cit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+inline bool operator<(A const& L, A const& R)  { return L.data < R.data; }
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/iterator.pass.cpp
new file mode 100644
index 0000000..b12645a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/iterator.pass.cpp
@@ -0,0 +1,274 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+//       iterator begin();
+// const_iterator begin() const;
+//       iterator end();
+// const_iterator end()   const;
+//
+//       reverse_iterator rbegin();
+// const_reverse_iterator rbegin() const;
+//       reverse_iterator rend();
+// const_reverse_iterator rend()   const;
+//
+// const_iterator         cbegin()  const;
+// const_iterator         cend()    const;
+// const_reverse_iterator crbegin() const;
+// const_reverse_iterator crend()   const;
+
+#include <map>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::multimap<int, double>::iterator i;
+        i = m.begin();
+        std::multimap<int, double>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; j <= 8; ++j)
+            for (double d = 1; d <= 2; d += .5, ++i)
+            {
+                assert(i->first == j);
+                assert(i->second == d);
+                i->second = 2.5;
+                assert(i->second == 2.5);
+            }
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (double d = 1; d <= 2; d += .5)
+            {
+                --i;
+                assert(i->first == j);
+                assert(i->second == 2.5);
+                i->second = d;
+                assert(i->second == d);
+            }
+        assert(i == m.begin());
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        const std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::multimap<int, double>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; j <= 8; ++j)
+            for (double d = 1; d <= 2; d += .5, ++i)
+            {
+                assert(i->first == j);
+                assert(i->second == d);
+            }
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (double d = 2; d >= 1; d -= .5)
+            {
+                --i;
+                assert(i->first == j);
+                assert(i->second == d);
+            }
+        assert(i == m.begin());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        std::multimap<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::multimap<int, double, std::less<int>, min_allocator<V>>::iterator i;
+        i = m.begin();
+        std::multimap<int, double, std::less<int>, min_allocator<V>>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; j <= 8; ++j)
+            for (double d = 1; d <= 2; d += .5, ++i)
+            {
+                assert(i->first == j);
+                assert(i->second == d);
+                i->second = 2.5;
+                assert(i->second == 2.5);
+            }
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (double d = 1; d <= 2; d += .5)
+            {
+                --i;
+                assert(i->first == j);
+                assert(i->second == 2.5);
+                i->second = d;
+                assert(i->second == d);
+            }
+        assert(i == m.begin());
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+            V(4, 1),
+            V(4, 1.5),
+            V(4, 2),
+            V(5, 1),
+            V(5, 1.5),
+            V(5, 2),
+            V(6, 1),
+            V(6, 1.5),
+            V(6, 2),
+            V(7, 1),
+            V(7, 1.5),
+            V(7, 2),
+            V(8, 1),
+            V(8, 1.5),
+            V(8, 2)
+        };
+        const std::multimap<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::multimap<int, double, std::less<int>, min_allocator<V>>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; j <= 8; ++j)
+            for (double d = 1; d <= 2; d += .5, ++i)
+            {
+                assert(i->first == j);
+                assert(i->second == d);
+            }
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (double d = 2; d >= 1; d -= .5)
+            {
+                --i;
+                assert(i->first == j);
+                assert(i->second == d);
+            }
+        assert(i == m.begin());
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::multimap<int, double> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..bce28fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <map>
+
+#include <iterator>
+
+using iterator = std::multimap<int, int>::iterator;
+using const_iterator = std::multimap<int, int>::const_iterator;
+using reverse_iterator = std::multimap<int, int>::reverse_iterator;
+using const_reverse_iterator = std::multimap<int, int>::const_reverse_iterator;
+using value_type = std::pair<const int, int>;
+
+static_assert(std::bidirectional_iterator<iterator>);
+static_assert(!std::random_access_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<iterator, std::pair<int, int>*>);
+static_assert( std::indirectly_copyable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::bidirectional_iterator<const_iterator>);
+static_assert(!std::random_access_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/max_size.pass.cpp
new file mode 100644
index 0000000..a4537c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/max_size.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <map>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  typedef std::pair<const int, int> KV;
+  {
+    typedef limited_allocator<KV, 10> A;
+    typedef std::multimap<int, int, std::less<int>, A> C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<KV, (size_t)-1> A;
+    typedef std::multimap<int, int, std::less<int>, A> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+  }
+  {
+    typedef std::multimap<char, int> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/alloc.pass.cpp
new file mode 100644
index 0000000..4c16350
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/alloc.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// explicit multimap(const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::less<int> C;
+    typedef test_allocator<std::pair<const int, double> > A;
+    std::multimap<int, double, C, A> m(A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::less<int> C;
+    typedef min_allocator<std::pair<const int, double> > A;
+    std::multimap<int, double, C, A> m(A{});
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A());
+    }
+    {
+    typedef std::less<int> C;
+    typedef explicit_allocator<std::pair<const int, double> > A;
+    std::multimap<int, double, C, A> m(A{});
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A{});
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..7a15d78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap& operator=(initializer_list<value_type> il);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double> C;
+    typedef C::value_type V;
+    C m = {{20, 1}};
+    m =
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           };
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    }
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> C;
+    typedef C::value_type V;
+    C m = {{20, 1}};
+    m =
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           };
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare.pass.cpp
new file mode 100644
index 0000000..ebe1c9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// explicit multimap(const key_compare& comp);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> C;
+    const std::multimap<int, double, C> m(C(3));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(3));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef test_less<int> C;
+    const std::multimap<int, double, C, min_allocator<std::pair<const int, double>>> m(C(3));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(3));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare_alloc.pass.cpp
new file mode 100644
index 0000000..7bfb93e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare_alloc.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap(const key_compare& comp, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> C;
+    typedef test_allocator<std::pair<const int, double> > A;
+    std::multimap<int, double, C, A> m(C(4), A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef test_less<int> C;
+    typedef min_allocator<std::pair<const int, double> > A;
+    std::multimap<int, double, C, A> m(C(4), A());
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A());
+    }
+    {
+    typedef test_less<int> C;
+    typedef explicit_allocator<std::pair<const int, double> > A;
+    std::multimap<int, double, C, A> m(C(4), A{});
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A{});
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..23fe479
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// Check that std::multimap fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <map>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs < rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::multimap<int, int, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy.pass.cpp
new file mode 100644
index 0000000..9e53d9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap(const multimap& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::multimap<int, double, C, A> m = mo;
+        assert(m == mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::multimap<int, double, C, A> m = mo;
+        assert(m == mo);
+        assert(m.get_allocator() == A(-2));
+        assert(m.key_comp() == C(5));
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::multimap<int, double, C, A> m = mo;
+        assert(m == mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..9ccf771
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_alloc.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap(const multimap& m, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef test_allocator<V> A;
+    std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+    std::multimap<int, double, C, A> m(mo, A(3));
+    assert(m == mo);
+    assert(m.get_allocator() == A(3));
+    assert(m.key_comp() == C(5));
+
+    assert(mo.get_allocator() == A(7));
+    assert(mo.key_comp() == C(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef min_allocator<V> A;
+    std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+    std::multimap<int, double, C, A> m(mo, A());
+    assert(m == mo);
+    assert(m.get_allocator() == A());
+    assert(m.key_comp() == C(5));
+
+    assert(mo.get_allocator() == A());
+    assert(mo.key_comp() == C(5));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef explicit_allocator<V> A;
+    std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A{});
+    std::multimap<int, double, C, A> m(mo, A{});
+    assert(m == mo);
+    assert(m.get_allocator() == A{});
+    assert(m.key_comp() == C(5));
+
+    assert(mo.get_allocator() == A{});
+    assert(mo.key_comp() == C(5));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_assign.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_assign.addressof.compile.pass.cpp
new file mode 100644
index 0000000..8628839
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_assign.addressof.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap& operator=(const multimap& m);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  {
+    std::multimap<int, operator_hijacker> mo;
+    std::multimap<int, operator_hijacker> m;
+    m = mo;
+  }
+  {
+    std::multimap<operator_hijacker, int> mo;
+    std::multimap<operator_hijacker, int> m;
+    m = mo;
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp
new file mode 100644
index 0000000..b4ff5e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/copy_assign.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap& operator=(const multimap& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::multimap<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m == mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        const V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::multimap<int, double> *p = &m;
+        m = *p;
+        assert(m.size() == sizeof(ar)/sizeof(ar[0]));
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::multimap<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m == mo);
+        assert(m.get_allocator() == A(2));
+        assert(m.key_comp() == C(5));
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<const int, double> V;
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::multimap<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A());
+        m = mo;
+        assert(m == mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct.fail.cpp
new file mode 100644
index 0000000..3834033
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct.fail.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// multimap(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> multimap<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
+// multimap(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> multimap<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// multimap(InputIterator, InputIterator, Allocator)
+//   -> multimap<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// multimap(initializer_list<Key>, Allocator)
+//   -> multimap<Key, less<Key>, Allocator>;
+
+#include <climits> // INT_MAX
+#include <functional>
+#include <map>
+#include <type_traits>
+
+struct NotAnAllocator {
+    friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
+};
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    {
+        // cannot deduce Key and T from nothing
+        std::multimap m; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce Key and T from just (Compare)
+        std::multimap m(std::less<int>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce Key and T from just (Compare, Allocator)
+        std::multimap m(std::less<int>{}, std::allocator<PC>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce Key and T from just (Allocator)
+        std::multimap m(std::allocator<PC>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // refuse to rebind the allocator if Allocator::value_type is not exactly what we expect
+        const P arr[] = { {1,1L}, {2,2L}, {3,3L} };
+        std::multimap m(arr, arr + 3, std::allocator<P>());
+            // expected-error-re@map:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '.*')?}}{{.*}}Allocator::value_type must be same type as value_type}}
+    }
+    {
+        // cannot convert from some arbitrary unrelated type
+        NotAnAllocator a;
+        std::multimap m(a); // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::multimap m{ {1,1L}, {2,2L}, {3,3L} };
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::multimap m({ {1,1L}, {2,2L}, {3,3L} }, std::less<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::multimap m({ {1,1L}, {2,2L}, {3,3L} }, std::less<int>(), std::allocator<PC>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // cannot deduce that the inner braced things should be std::pair and not something else
+        std::multimap m({ {1,1L}, {2,2L}, {3,3L} }, std::allocator<PC>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // since we have parens, not braces, this deliberately does not find the initializer_list constructor
+        std::multimap m(P{1,1L});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+    {
+        // since we have parens, not braces, this deliberately does not find the initializer_list constructor
+        std::multimap m(PC{1,1L});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multimap'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct.pass.cpp
new file mode 100644
index 0000000..c71a739
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// multimap(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> multimap<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
+// multimap(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> multimap<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// multimap(InputIterator, InputIterator, Allocator)
+//   -> multimap<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// multimap(initializer_list<Key>, Allocator)
+//   -> multimap<Key, less<Key>, Allocator>;
+
+#include <algorithm> // std::equal
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <map>
+#include <type_traits>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long>);
+    const PC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr), std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::greater<int>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr), std::greater<int>(), test_allocator<PC>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::greater<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 42);
+    }
+
+    {
+    std::multimap<int, long> source;
+    std::multimap m(source);
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::multimap<int, long> source;
+    std::multimap m{source};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::multimap<int, long> source;
+    std::multimap m(source, std::map<int, long>::allocator_type());
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::multimap m{ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} };
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long>);
+    const PC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::greater<int>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, std::greater<int>(), test_allocator<PC>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::greater<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 43);
+    }
+
+    {
+    const P arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr), test_allocator<PC>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::less<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 44);
+    }
+
+    {
+    std::multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, test_allocator<PC>(0, 45));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::less<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    {
+    // Examples from LWG3025
+    std::multimap m{std::pair{1, 1}, {2, 2}, {3, 3}};
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, int>);
+
+    std::multimap m2{m.begin(), m.end()};
+    ASSERT_SAME_TYPE(decltype(m2), std::multimap<int, int>);
+    }
+
+    {
+    // Examples from LWG3531
+    std::multimap m1{{std::pair{1, 2}, {3, 4}}, std::less<int>()};
+    ASSERT_SAME_TYPE(decltype(m1), std::multimap<int, int>);
+
+    using value_type = std::pair<const int, int>;
+    std::multimap m2{{value_type{1, 2}, {3, 4}}, std::less<int>()};
+    ASSERT_SAME_TYPE(decltype(m2), std::multimap<int, int>);
+    }
+
+    AssociativeContainerDeductionGuidesSfinaeAway<std::multimap, std::multimap<int, long>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct_const.pass.cpp
new file mode 100644
index 0000000..c8f25dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/deduct_const.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// multimap(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> multimap<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>, class Allocator = allocator<Key>>
+// multimap(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> multimap<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// multimap(InputIterator, InputIterator, Allocator)
+//   -> multimap<iter-value-type<InputIterator>, less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// multimap(initializer_list<Key>, Allocator)
+//   -> multimap<Key, less<Key>, Allocator>;
+
+#include <algorithm> // std::equal
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <iterator>
+#include <map>
+#include <type_traits>
+
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+using PCC = std::pair<const int, const long>;
+
+int main(int, char**)
+{
+    {
+    const PCC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, const long>);
+    const PCC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PCC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr), std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, const long, std::greater<int>>);
+    const PCC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PCC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::multimap m(std::begin(arr), std::end(arr), std::greater<int>(), test_allocator<PCC>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, const long, std::greater<int>, test_allocator<PCC>>);
+    const PCC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 42);
+    }
+
+    {
+    std::multimap m{ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} };
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long>);
+    const PC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::greater<int>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, std::greater<int>(), test_allocator<PC>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::greater<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {INT_MAX,1L}, {3,1L}, {2,2L}, {1,1L}, {1,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 43);
+    }
+
+    {
+    std::multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, test_allocator<PC>(0, 45));
+
+    ASSERT_SAME_TYPE(decltype(m), std::multimap<int, long, std::less<int>, test_allocator<PC>>);
+    const PC expected_m[] = { {1,1L}, {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+    assert(std::equal(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default.pass.cpp
new file mode 100644
index 0000000..5248874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap();
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::multimap<int, double> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+    {
+    typedef explicit_allocator<std::pair<const int, double>> A;
+        {
+        std::multimap<int, double, std::less<int>, A> m;
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+        {
+        A a;
+        std::multimap<int, double, std::less<int>, A> m(a);
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+    }
+    {
+    std::multimap<int, double> m = {};
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..6abc125
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default_noexcept.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// multimap()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default_recursive.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default_recursive.pass.cpp
new file mode 100644
index 0000000..94003f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/default_recursive.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// multimap();
+
+#include <map>
+
+#include "test_macros.h"
+
+struct X
+{
+    std::multimap<int, X> m;
+    std::multimap<int, X>::iterator i;
+    std::multimap<int, X>::const_iterator ci;
+#if TEST_STD_VER <= 17
+    // These reverse_iterator specializations require X to be complete in C++20.
+    std::multimap<int, X>::reverse_iterator ri;
+    std::multimap<int, X>::const_reverse_iterator cri;
+#endif // TEST_STD_VER <= 17
+};
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..407f966
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// ~multimap() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..1c67977
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap(initializer_list<value_type> il, const key_compare& comp = key_compare());
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double> C;
+    typedef C::value_type V;
+    C m =
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           };
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    }
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> C;
+    typedef C::value_type V;
+    C m =
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           };
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list_compare.pass.cpp
new file mode 100644
index 0000000..ed8ab93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list_compare.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap(initializer_list<value_type> il, const key_compare& comp = key_compare());
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> Cmp;
+    typedef std::multimap<int, double, Cmp> C;
+    typedef C::value_type V;
+    C m(
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           },
+           Cmp(4)
+        );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    assert(m.key_comp() == Cmp(4));
+    }
+    {
+    typedef test_less<int> Cmp;
+    typedef std::multimap<int, double, Cmp, min_allocator<std::pair<const int, double>>> C;
+    typedef C::value_type V;
+    C m(
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           },
+           Cmp(4)
+        );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    assert(m.key_comp() == Cmp(4));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list_compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list_compare_alloc.pass.cpp
new file mode 100644
index 0000000..92d6128
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/initializer_list_compare_alloc.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap(initializer_list<value_type> il, const key_compare& comp, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> Cmp;
+    typedef test_allocator<std::pair<const int, double> > A;
+    typedef std::multimap<int, double, Cmp, A> C;
+    typedef C::value_type V;
+    C m(
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           },
+           Cmp(4), A(5)
+        );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    assert(m.key_comp() == Cmp(4));
+    assert(m.get_allocator() == A(5));
+    }
+    {
+    typedef test_less<int> Cmp;
+    typedef min_allocator<std::pair<const int, double> > A;
+    typedef std::multimap<int, double, Cmp, A> C;
+    typedef C::value_type V;
+    C m(
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           },
+           Cmp(4), A()
+        );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    assert(m.key_comp() == Cmp(4));
+    assert(m.get_allocator() == A());
+    }
+    {
+    typedef test_less<int> C;
+    typedef std::pair<const int, double> V;
+    typedef min_allocator<V> A;
+    typedef std::multimap<int, double, C, A> M;
+    A a;
+    M m ({ {1, 1},
+           {1, 1.5},
+           {1, 2},
+           {2, 1},
+           {2, 1.5},
+           {2, 2},
+           {3, 1},
+           {3, 1.5},
+           {3, 2}
+          }, a);
+
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    M::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    assert(m.get_allocator() == a);
+    }
+    {
+    typedef test_less<int> Cmp;
+    typedef explicit_allocator<std::pair<const int, double> > A;
+    typedef std::multimap<int, double, Cmp, A> C;
+    typedef C::value_type V;
+    C m(
+           {
+               {1, 1},
+               {1, 1.5},
+               {1, 2},
+               {2, 1},
+               {2, 1.5},
+               {2, 2},
+               {3, 1},
+               {3, 1.5},
+               {3, 2}
+           },
+           Cmp(4), A{}
+        );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 1.5));
+    assert(*++i == V(3, 2));
+    assert(m.key_comp() == Cmp(4));
+    assert(m.get_allocator() == A{});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter.pass.cpp
new file mode 100644
index 0000000..92ebc56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// template <class InputIterator>
+//     multimap(InputIterator first, InputIterator last);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    std::multimap<int, double> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    std::multimap<int, double, std::less<int>, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef min_allocator<std::pair<const int, double>> A;
+    A a;
+    std::multimap<int, double, std::less<int>, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), a);
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    assert(m.get_allocator() == a);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter_comp.pass.cpp
new file mode 100644
index 0000000..d50df29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter_comp.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// template <class InputIterator>
+//     multimap(InputIterator first, InputIterator last,
+//              const key_compare& comp);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    std::multimap<int, double, C> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    std::multimap<int, double, C, min_allocator<V>> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter_comp_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter_comp_alloc.pass.cpp
new file mode 100644
index 0000000..0d0f0b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/iter_iter_comp_alloc.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// template <class InputIterator>
+//     multimap(InputIterator first, InputIterator last,
+//              const key_compare& comp, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef test_allocator<V> A;
+    std::multimap<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+    assert(m.get_allocator() == A(7));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef min_allocator<V> A;
+    std::multimap<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+    assert(m.get_allocator() == A());
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+    {
+    typedef std::pair<const int, double> V;
+    V ar[] =
+    {
+        V(1, 1),
+        V(1, 1.5),
+        V(1, 2),
+        V(2, 1),
+        V(2, 1.5),
+        V(2, 2),
+        V(3, 1),
+        V(3, 1.5),
+        V(3, 2),
+    };
+    typedef test_less<int> C;
+    typedef explicit_allocator<V> A;
+    std::multimap<int, double, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A{});
+    assert(m.get_allocator() == A{});
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*m.begin() == V(1, 1));
+    assert(*std::next(m.begin()) == V(1, 1.5));
+    assert(*std::next(m.begin(), 2) == V(1, 2));
+    assert(*std::next(m.begin(), 3) == V(2, 1));
+    assert(*std::next(m.begin(), 4) == V(2, 1.5));
+    assert(*std::next(m.begin(), 5) == V(2, 2));
+    assert(*std::next(m.begin(), 6) == V(3, 1));
+    assert(*std::next(m.begin(), 7) == V(3, 1.5));
+    assert(*std::next(m.begin(), 8) == V(3, 2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move.pass.cpp
new file mode 100644
index 0000000..f4170fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap(multimap&& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multimap<int, double, C, A> mo(C(5), A(7));
+        std::multimap<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 0);
+        assert(std::distance(m.begin(), m.end()) == 0);
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::multimap<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(1, 1.5));
+        assert(*std::next(m.begin(), 2) == V(1, 2));
+        assert(*std::next(m.begin(), 3) == V(2, 1));
+        assert(*std::next(m.begin(), 4) == V(2, 1.5));
+        assert(*std::next(m.begin(), 5) == V(2, 2));
+        assert(*std::next(m.begin(), 6) == V(3, 1));
+        assert(*std::next(m.begin(), 7) == V(3, 1.5));
+        assert(*std::next(m.begin(), 8) == V(3, 2));
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::multimap<int, double, C, A> mo(C(5), A());
+        std::multimap<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 0);
+        assert(std::distance(m.begin(), m.end()) == 0);
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        V ar[] =
+        {
+            V(1, 1),
+            V(1, 1.5),
+            V(1, 2),
+            V(2, 1),
+            V(2, 1.5),
+            V(2, 2),
+            V(3, 1),
+            V(3, 1.5),
+            V(3, 2),
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::multimap<int, double, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::multimap<int, double, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*m.begin() == V(1, 1));
+        assert(*std::next(m.begin()) == V(1, 1.5));
+        assert(*std::next(m.begin(), 2) == V(1, 2));
+        assert(*std::next(m.begin(), 3) == V(2, 1));
+        assert(*std::next(m.begin(), 4) == V(2, 1.5));
+        assert(*std::next(m.begin(), 5) == V(2, 2));
+        assert(*std::next(m.begin(), 6) == V(3, 1));
+        assert(*std::next(m.begin(), 7) == V(3, 1.5));
+        assert(*std::next(m.begin(), 8) == V(3, 2));
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..a4edd47
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_alloc.pass.cpp
@@ -0,0 +1,276 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap(multimap&& m, const allocator_type& a);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(7));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef Counter<int> T;
+        typedef std::pair<int, T> V;
+        typedef std::pair<const int, T> VC;
+        typedef test_allocator<VC> A;
+        typedef std::less<int> C;
+        typedef std::multimap<const int, T, C, A> M;
+        typedef V* I;
+        Counter_base::gConstructed = 0;
+        {
+            V a1[] =
+            {
+                V(1, 1),
+                V(1, 2),
+                V(1, 3),
+                V(2, 1),
+                V(2, 2),
+                V(2, 3),
+                V(3, 1),
+                V(3, 2),
+                V(3, 3)
+            };
+            const size_t num = sizeof(a1)/sizeof(a1[0]);
+            assert(Counter_base::gConstructed == num);
+
+            M m1(I(a1), I(a1+num), C(), A());
+            assert(Counter_base::gConstructed == 2*num);
+
+            M m2(m1);
+            assert(m2 == m1);
+            assert(Counter_base::gConstructed == 3*num);
+
+            M m3(std::move(m1), A());
+            assert(m3 == m2);
+            LIBCPP_ASSERT(m1.empty());
+            assert(Counter_base::gConstructed >= (int)(3*num));
+            assert(Counter_base::gConstructed <= (int)(4*num));
+
+            {
+            M m4(std::move(m2), A(5));
+            assert(Counter_base::gConstructed >= (int)(3*num));
+            assert(Counter_base::gConstructed <= (int)(5*num));
+            assert(m4 == m3);
+            LIBCPP_ASSERT(m2.empty());
+            }
+            assert(Counter_base::gConstructed >= (int)(2*num));
+            assert(Counter_base::gConstructed <= (int)(4*num));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef min_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A());
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A());
+        M m3(std::move(m1), A());
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A());
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef explicit_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A{});
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A{});
+        M m3(std::move(m1), A{});
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A{});
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..f0a54b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_assign.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// multimap& operator=(multimap&& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(7));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef std::pair<MoveOnly, MoveOnly> V;
+        typedef std::pair<const MoveOnly, MoveOnly> VC;
+        typedef test_less<MoveOnly> C;
+        typedef min_allocator<VC> A;
+        typedef std::multimap<MoveOnly, MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A());
+        V a2[] =
+        {
+            V(1, 1),
+            V(1, 2),
+            V(1, 3),
+            V(2, 1),
+            V(2, 2),
+            V(2, 3),
+            V(3, 1),
+            V(3, 2),
+            V(3, 3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A());
+        M m3(C(3), A());
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A());
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..4cd8c19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// multimap& operator=(multimap&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..e31348e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.cons/move_noexcept.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// multimap(multimap&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..f270c4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.erasure/erase_if.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <map>
+
+// template <class Key, class T, class Compare, class Allocator, class Predicate>
+//   typename multimap<Key, T, Compare, Allocator>::size_type
+//   erase_if(multimap<Key, T, Compare, Allocator>& c, Predicate pred);
+
+#include <map>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+using Init = std::initializer_list<int>;
+template <typename M>
+M make (Init vals)
+{
+    M ret;
+    for (int v : vals)
+        ret.emplace(static_cast<typename M::key_type>(v), static_cast<typename M::mapped_type>(v + 10));
+    return ret;
+}
+
+template <typename M, typename Pred>
+void test0(Init vals, Pred p, Init expected, size_t expected_erased_count) {
+  M s = make<M>(vals);
+  ASSERT_SAME_TYPE(typename M::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == make<M>(expected));
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v.first == 1;};
+    auto is2 = [](auto v) { return v.first == 2;};
+    auto is3 = [](auto v) { return v.first == 3;};
+    auto is4 = [](auto v) { return v.first == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0<S>({}, is1, {}, 0);
+
+    test0<S>({1}, is1, {}, 1);
+    test0<S>({1}, is2, {1}, 0);
+
+    test0<S>({1, 2}, is1, {2}, 1);
+    test0<S>({1, 2}, is2, {1}, 1);
+    test0<S>({1, 2}, is3, {1, 2}, 0);
+    test0<S>({1, 1}, is1, {}, 2);
+    test0<S>({1, 1}, is3, {1, 1}, 0);
+
+    test0<S>({1, 2, 3}, is1, {2, 3}, 1);
+    test0<S>({1, 2, 3}, is2, {1, 3}, 1);
+    test0<S>({1, 2, 3}, is3, {1, 2}, 1);
+    test0<S>({1, 2, 3}, is4, {1, 2, 3}, 0);
+
+    test0<S>({1, 1, 1}, is1, {}, 3);
+    test0<S>({1, 1, 1}, is2, {1, 1, 1}, 0);
+    test0<S>({1, 1, 2}, is1, {2}, 2);
+    test0<S>({1, 1, 2}, is2, {1, 1}, 1);
+    test0<S>({1, 1, 2}, is3, {1, 1, 2}, 0);
+    test0<S>({1, 2, 2}, is1, {2, 2}, 1);
+    test0<S>({1, 2, 2}, is2, {1}, 2);
+    test0<S>({1, 2, 2}, is3, {1, 2, 2}, 0);
+
+    test0<S>({1, 2, 3}, True, {}, 3);
+    test0<S>({1, 2, 3}, False, {1, 2, 3}, 0);
+}
+
+int main(int, char**)
+{
+    test<std::multimap<int, int>>();
+    test<std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>>> ();
+    test<std::multimap<int, int, std::less<int>, test_allocator<std::pair<const int, int>>>> ();
+
+    test<std::multimap<long, short>>();
+    test<std::multimap<short, double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..d05a13b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/clear.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// void clear() noexcept;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, double> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..03c1b04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/emplace.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// template <class... Args>
+//   iterator emplace(Args&&... args);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, DefaultOnly> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(r == std::next(m.begin(), 2));
+        assert(m.size() == 3);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == DefaultOnly());
+        assert(DefaultOnly::count == 3);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::multimap<int, Emplaceable> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2),
+                                                  std::forward_as_tuple());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(3, 3.5));
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 3);
+        assert(r->first == 1);
+        assert(r->second == Emplaceable(3, 3.5));
+    }
+    {
+        typedef std::multimap<int, double> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace(M::value_type(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+    {
+        typedef std::multimap<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple());
+        assert(r == std::next(m.begin(), 2));
+        assert(m.size() == 3);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == DefaultOnly());
+        assert(DefaultOnly::count == 3);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::multimap<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace(std::piecewise_construct, std::forward_as_tuple(2),
+                                                  std::forward_as_tuple());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace(std::piecewise_construct, std::forward_as_tuple(1),
+                                                std::forward_as_tuple(3, 3.5));
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 3);
+        assert(r->first == 1);
+        assert(r->second == Emplaceable(3, 3.5));
+    }
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace(M::value_type(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/emplace_hint.pass.cpp
new file mode 100644
index 0000000..ac8aae1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/emplace_hint.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// template <class... Args>
+//   iterator emplace_hint(const_iterator position, Args&&... args);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, DefaultOnly> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace_hint(m.cend());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace_hint(m.cend(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace_hint(m.cend(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin(), 2));
+        assert(m.size() == 3);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == DefaultOnly());
+        assert(DefaultOnly::count == 3);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::multimap<int, Emplaceable> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), std::piecewise_construct,
+                                       std::forward_as_tuple(2),
+                                       std::forward_as_tuple());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple(3, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 3);
+        assert(r->first == 1);
+        assert(r->second == Emplaceable(3, 3.5));
+    }
+    {
+        typedef std::multimap<int, double> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), M::value_type(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+    {
+        typedef std::multimap<int, DefaultOnly, std::less<int>, min_allocator<std::pair<const int, DefaultOnly>>> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace_hint(m.cend());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 0);
+        assert(m.begin()->second == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+        r = m.emplace_hint(m.cend(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+        r = m.emplace_hint(m.cend(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple());
+        assert(r == std::next(m.begin(), 2));
+        assert(m.size() == 3);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == DefaultOnly());
+        assert(DefaultOnly::count == 3);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::multimap<int, Emplaceable, std::less<int>, min_allocator<std::pair<const int, Emplaceable>>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), std::piecewise_construct,
+                                       std::forward_as_tuple(2),
+                                       std::forward_as_tuple());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == Emplaceable());
+        r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == Emplaceable(2, 3.5));
+        r = m.emplace_hint(m.cbegin(), std::piecewise_construct,
+                                       std::forward_as_tuple(1),
+                                       std::forward_as_tuple(3, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 3);
+        assert(r->first == 1);
+        assert(r->second == Emplaceable(3, 3.5));
+    }
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), M::value_type(2, 3.5));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(m.begin()->first == 2);
+        assert(m.begin()->second == 3.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_iter.pass.cpp
new file mode 100644
index 0000000..d958f61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_iter.pass.cpp
@@ -0,0 +1,303 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// iterator erase(const_iterator position);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator<(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, double> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 9);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 8);
+        assert(i == std::next(m.begin(), 3));
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 1.5);
+        assert(std::next(m.begin(), 4)->first == 2);
+        assert(std::next(m.begin(), 4)->second == 2);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 1);
+        assert(std::next(m.begin(), 6)->first == 3);
+        assert(std::next(m.begin(), 6)->second == 1.5);
+        assert(std::next(m.begin(), 7)->first == 3);
+        assert(std::next(m.begin(), 7)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 7);
+        assert(i == m.begin());
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 2);
+        assert(std::next(m.begin(), 2)->first == 2);
+        assert(std::next(m.begin(), 2)->second == 1.5);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 2);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 1.5);
+        assert(std::next(m.begin(), 6)->first == 3);
+        assert(std::next(m.begin(), 6)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 6);
+        assert(i == std::prev(m.end()));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 2);
+        assert(std::next(m.begin(), 2)->first == 2);
+        assert(std::next(m.begin(), 2)->second == 1.5);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 2);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 5);
+        assert(i == std::next(m.begin()));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 2);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 2);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 2);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 1);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 2);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 0));
+        assert(std::next(m.begin(), 0)->first == 2);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 3);
+        assert(std::next(m.begin(), 1)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 1);
+        assert(i == m.end());
+        assert(std::next(m.begin(), 0)->first == 2);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 9);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 8);
+        assert(i == std::next(m.begin(), 3));
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 1.5);
+        assert(std::next(m.begin(), 4)->first == 2);
+        assert(std::next(m.begin(), 4)->second == 2);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 1);
+        assert(std::next(m.begin(), 6)->first == 3);
+        assert(std::next(m.begin(), 6)->second == 1.5);
+        assert(std::next(m.begin(), 7)->first == 3);
+        assert(std::next(m.begin(), 7)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 7);
+        assert(i == m.begin());
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 2);
+        assert(std::next(m.begin(), 2)->first == 2);
+        assert(std::next(m.begin(), 2)->second == 1.5);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 2);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 1.5);
+        assert(std::next(m.begin(), 6)->first == 3);
+        assert(std::next(m.begin(), 6)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 6);
+        assert(i == std::prev(m.end()));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 2);
+        assert(std::next(m.begin(), 2)->first == 2);
+        assert(std::next(m.begin(), 2)->second == 1.5);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 2);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 5);
+        assert(i == std::next(m.begin()));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 2);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 2);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 2);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 1);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 2);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 0));
+        assert(std::next(m.begin(), 0)->first == 2);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+        assert(std::next(m.begin(), 1)->first == 3);
+        assert(std::next(m.begin(), 1)->second == 2);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 1);
+        assert(i == m.end());
+        assert(std::next(m.begin(), 0)->first == 2);
+        assert(std::next(m.begin(), 0)->second == 1.5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::multimap<T, int> C;
+        typedef C::iterator I;
+
+        C c;
+        T a{0};
+        I it = c.find(a);
+        if (it != c.end())
+            c.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..68a8f2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_iter_iter.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, double> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(m.cbegin(), m.cbegin());
+        assert(m.size() == 8);
+        assert(i == m.begin());
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 4);
+        assert(std::next(m.begin(), 3)->second == 4.5);
+        assert(std::next(m.begin(), 4)->first == 5);
+        assert(std::next(m.begin(), 4)->second == 5.5);
+        assert(std::next(m.begin(), 5)->first == 6);
+        assert(std::next(m.begin(), 5)->second == 6.5);
+        assert(std::next(m.begin(), 6)->first == 7);
+        assert(std::next(m.begin(), 6)->second == 7.5);
+        assert(std::next(m.begin(), 7)->first == 8);
+        assert(std::next(m.begin(), 7)->second == 8.5);
+
+        i = m.erase(m.cbegin(), std::next(m.cbegin(), 2));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 6));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        typedef M::iterator I;
+        P ar[] =
+        {
+            P(1, 1.5),
+            P(2, 2.5),
+            P(3, 3.5),
+            P(4, 4.5),
+            P(5, 5.5),
+            P(6, 6.5),
+            P(7, 7.5),
+            P(8, 8.5),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(m.cbegin(), m.cbegin());
+        assert(m.size() == 8);
+        assert(i == m.begin());
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1.5);
+        assert(std::next(m.begin())->first == 2);
+        assert(std::next(m.begin())->second == 2.5);
+        assert(std::next(m.begin(), 2)->first == 3);
+        assert(std::next(m.begin(), 2)->second == 3.5);
+        assert(std::next(m.begin(), 3)->first == 4);
+        assert(std::next(m.begin(), 3)->second == 4.5);
+        assert(std::next(m.begin(), 4)->first == 5);
+        assert(std::next(m.begin(), 4)->second == 5.5);
+        assert(std::next(m.begin(), 5)->first == 6);
+        assert(std::next(m.begin(), 5)->second == 6.5);
+        assert(std::next(m.begin(), 6)->first == 7);
+        assert(std::next(m.begin(), 6)->second == 7.5);
+        assert(std::next(m.begin(), 7)->first == 8);
+        assert(std::next(m.begin(), 7)->second == 8.5);
+
+        i = m.erase(m.cbegin(), std::next(m.cbegin(), 2));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+        assert(std::next(m.begin(), 2)->first == 5);
+        assert(std::next(m.begin(), 2)->second == 5.5);
+        assert(std::next(m.begin(), 3)->first == 6);
+        assert(std::next(m.begin(), 3)->second == 6.5);
+        assert(std::next(m.begin(), 4)->first == 7);
+        assert(std::next(m.begin(), 4)->second == 7.5);
+        assert(std::next(m.begin(), 5)->first == 8);
+        assert(std::next(m.begin(), 5)->second == 8.5);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 6));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(std::next(m.begin(), 0)->first == 3);
+        assert(std::next(m.begin(), 0)->second == 3.5);
+        assert(std::next(m.begin(), 1)->first == 4);
+        assert(std::next(m.begin(), 1)->second == 4.5);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_key.pass.cpp
new file mode 100644
index 0000000..f00436d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/erase_key.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// size_type erase(const key_type& k);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, double> M;
+        typedef std::pair<int, double> P;
+        typedef M::size_type I;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 9);
+        I i = m.erase(2);
+        assert(m.size() == 6);
+        assert(i == 3);
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1.5);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 2);
+
+        i = m.erase(2);
+        assert(m.size() == 6);
+        assert(i == 0);
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1.5);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 2);
+
+        i = m.erase(3);
+        assert(i == 3);
+        assert(m.size() == 3);
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+
+        i = m.erase(1);
+        assert(m.size() == 0);
+        assert(i == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        typedef M::size_type I;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 9);
+        I i = m.erase(2);
+        assert(m.size() == 6);
+        assert(i == 3);
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1.5);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 2);
+
+        i = m.erase(2);
+        assert(m.size() == 6);
+        assert(i == 0);
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 3);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 3);
+        assert(std::next(m.begin(), 4)->second == 1.5);
+        assert(std::next(m.begin(), 5)->first == 3);
+        assert(std::next(m.begin(), 5)->second == 2);
+
+        i = m.erase(3);
+        assert(i == 3);
+        assert(m.size() == 3);
+        assert(std::next(m.begin(), 0)->first == 1);
+        assert(std::next(m.begin(), 0)->second == 1);
+        assert(std::next(m.begin(), 1)->first == 1);
+        assert(std::next(m.begin(), 1)->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+
+        i = m.erase(1);
+        assert(m.size() == 0);
+        assert(i == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/extract_iterator.pass.cpp
new file mode 100644
index 0000000..c5f5b4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/extract_iterator.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class multimap
+
+// node_type extract(const_iterator);
+
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    auto some_key = c.cbegin()->first;
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = first->first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.key() == key_value);
+        t.key() = some_key;
+        assert(t.key() == some_key);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using map_type = std::multimap<int, int>;
+        map_type m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        test(m);
+    }
+
+    {
+        std::multimap<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        assert(Counter_base::gConstructed == 12);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::multimap<int, int, std::less<int>,
+                     min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/extract_key.pass.cpp
new file mode 100644
index 0000000..891e78c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/extract_key.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class multimap
+
+// node_type extract(key_type const&);
+
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.key() == *copy);
+        t.key() = *first; // We should be able to mutate key.
+        assert(t.key() == *first);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::multimap<int, int> m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::multimap<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 12+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::multimap<int, int, std::less<int>,
+                          min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..446e352
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_allocator_requirements.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// insert(...)
+
+// UNSUPPORTED: c++03
+
+#include <map>
+
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../../map_allocator_requirement_test_templates.h"
+
+
+int main(int, char**)
+{
+  testMultimapInsert<TCT::multimap<> >();
+  testMultimapInsertHint<TCT::multimap<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_cv.pass.cpp
new file mode 100644
index 0000000..f340163
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_cv.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// iterator insert(const value_type& v);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+void do_insert_test() {
+    typedef Container M;
+    typedef typename M::iterator R;
+    typedef typename M::value_type VT;
+    M m;
+    const VT v1(2, 2.5);
+    R r = m.insert(v1);
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(r->first == 2);
+    assert(r->second == 2.5);
+
+    const VT v2(1, 1.5);
+    r = m.insert(v2);
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(r->first == 1);
+    assert(r->second == 1.5);
+
+    const VT v3(3, 3.5);
+    r = m.insert(v3);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3.5);
+
+    const VT v4(3, 3.5);
+    r = m.insert(v4);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 4);
+    assert(r->first == 3);
+    assert(r->second == 3.5);
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, double> Container;
+        do_insert_test<Container>();
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> Container;
+        do_insert_test<Container>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_initializer_list.pass.cpp
new file mode 100644
index 0000000..d5ef12a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_initializer_list.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// void insert(initializer_list<value_type> il);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double> C;
+    typedef C::value_type V;
+    C m =
+           {
+               {1, 1},
+               {1, 2},
+               {2, 1},
+               {2, 2},
+               {3, 1},
+               {3, 2}
+           };
+    m.insert(
+               {
+                   {1, 1.5},
+                   {2, 1.5},
+                   {3, 1.5},
+               }
+            );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 2));
+    assert(*++i == V(3, 1.5));
+    }
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> C;
+    typedef C::value_type V;
+    C m =
+           {
+               {1, 1},
+               {1, 2},
+               {2, 1},
+               {2, 2},
+               {3, 1},
+               {3, 2}
+           };
+    m.insert(
+               {
+                   {1, 1.5},
+                   {2, 1.5},
+                   {3, 1.5},
+               }
+            );
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1, 1));
+    assert(*++i == V(1, 2));
+    assert(*++i == V(1, 1.5));
+    assert(*++i == V(2, 1));
+    assert(*++i == V(2, 2));
+    assert(*++i == V(2, 1.5));
+    assert(*++i == V(3, 1));
+    assert(*++i == V(3, 2));
+    assert(*++i == V(3, 1.5));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_cv.pass.cpp
new file mode 100644
index 0000000..8152960
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_cv.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// iterator insert(const_iterator position, const value_type& v);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+void do_insert_hint_test()
+{
+    typedef Container M;
+    typedef typename M::iterator R;
+    typedef typename M::value_type VT;
+    M m;
+    const VT v1(2, 2.5);
+    R r = m.insert(m.end(), v1);
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(r->first == 2);
+    assert(r->second == 2.5);
+
+    const VT v2(1, 1.5);
+    r = m.insert(m.end(), v2);
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(r->first == 1);
+    assert(r->second == 1.5);
+
+    const VT v3(3, 3.5);
+    r = m.insert(m.end(), v3);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3.5);
+
+    const VT v4(3, 4.5);
+    r = m.insert(std::prev(m.end()), v4);
+    assert(r == std::prev(m.end(), 2));
+    assert(m.size() == 4);
+    assert(r->first == 3);
+    assert(r->second == 4.5);
+}
+
+int main(int, char**)
+{
+    do_insert_hint_test<std::multimap<int, double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        do_insert_hint_test<M>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_iter.pass.cpp
new file mode 100644
index 0000000..585f45a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_iter.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// template <class InputIterator>
+//   void insert(InputIterator first, InputIterator last);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multimap<int, double> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m;
+        m.insert(cpp17_input_iterator<P*>(ar), cpp17_input_iterator<P*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 9);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 2);
+        assert(std::next(m.begin(), 4)->second == 1.5);
+        assert(std::next(m.begin(), 5)->first == 2);
+        assert(std::next(m.begin(), 5)->second == 2);
+        assert(std::next(m.begin(), 6)->first == 3);
+        assert(std::next(m.begin(), 6)->second == 1);
+        assert(std::next(m.begin(), 7)->first == 3);
+        assert(std::next(m.begin(), 7)->second == 1.5);
+        assert(std::next(m.begin(), 8)->first == 3);
+        assert(std::next(m.begin(), 8)->second == 2);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+        typedef std::pair<int, double> P;
+        P ar[] =
+        {
+            P(1, 1),
+            P(1, 1.5),
+            P(1, 2),
+            P(2, 1),
+            P(2, 1.5),
+            P(2, 2),
+            P(3, 1),
+            P(3, 1.5),
+            P(3, 2),
+        };
+        M m;
+        m.insert(cpp17_input_iterator<P*>(ar), cpp17_input_iterator<P*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 9);
+        assert(m.begin()->first == 1);
+        assert(m.begin()->second == 1);
+        assert(std::next(m.begin())->first == 1);
+        assert(std::next(m.begin())->second == 1.5);
+        assert(std::next(m.begin(), 2)->first == 1);
+        assert(std::next(m.begin(), 2)->second == 2);
+        assert(std::next(m.begin(), 3)->first == 2);
+        assert(std::next(m.begin(), 3)->second == 1);
+        assert(std::next(m.begin(), 4)->first == 2);
+        assert(std::next(m.begin(), 4)->second == 1.5);
+        assert(std::next(m.begin(), 5)->first == 2);
+        assert(std::next(m.begin(), 5)->second == 2);
+        assert(std::next(m.begin(), 6)->first == 3);
+        assert(std::next(m.begin(), 6)->second == 1);
+        assert(std::next(m.begin(), 7)->first == 3);
+        assert(std::next(m.begin(), 7)->second == 1.5);
+        assert(std::next(m.begin(), 8)->first == 3);
+        assert(std::next(m.begin(), 8)->second == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_rv.pass.cpp
new file mode 100644
index 0000000..bd90b3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_iter_rv.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// template <class P>
+//     iterator insert(const_iterator position, P&& p);
+
+#include <map>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "test_macros.h"
+
+template <class Container, class Pair>
+void do_insert_rv_test()
+{
+    typedef Container M;
+    typedef Pair P;
+    typedef typename M::iterator R;
+    M m;
+    R r = m.insert(m.cend(), P(2, 2));
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(r->first == 2);
+    assert(r->second == 2);
+
+    r = m.insert(m.cend(), P(1, 1));
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(r->first == 1);
+    assert(r->second == 1);
+
+    r = m.insert(m.cend(), P(3, 3));
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3);
+
+    r = m.insert(m.cend(), P(3, 2));
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 4);
+    assert(r->first == 3);
+    assert(r->second == 2);
+}
+
+int main(int, char**)
+{
+    do_insert_rv_test<std::multimap<int, MoveOnly>, std::pair<int, MoveOnly> >();
+    do_insert_rv_test<std::multimap<int, MoveOnly>, std::pair<const int, MoveOnly> >();
+
+    {
+        typedef std::multimap<int, MoveOnly, std::less<int>, min_allocator<std::pair<const int, MoveOnly>>> M;
+        typedef std::pair<int, MoveOnly> P;
+        typedef std::pair<const int, MoveOnly> CP;
+        do_insert_rv_test<M, P>();
+        do_insert_rv_test<M, CP>();
+
+    }
+    {
+        typedef std::multimap<int, MoveOnly> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), {2, MoveOnly(2)});
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(r->first == 2);
+        assert(r->second == 2);
+
+        r = m.insert(m.cend(), {1, MoveOnly(1)});
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(r->first == 1);
+        assert(r->second == 1);
+
+        r = m.insert(m.cend(), {3, MoveOnly(3)});
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = m.insert(m.cend(), {3, MoveOnly(2)});
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(r->first == 3);
+        assert(r->second == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_node_type.pass.cpp
new file mode 100644
index 0000000..8334bbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_node_type.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class multimap
+
+// iterator insert(node_type&&);
+
+#include <map>
+#include <type_traits>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto it = c.insert({key, mapped});
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        typename Container::iterator it = c.insert(std::move(node));
+        assert(node.empty());
+        assert(it == c.find(i) && it != c.end());
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto it = c.insert(std::move(def));
+        assert(def.empty());
+        assert(it == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0, 42);
+        auto it = c.insert(std::move(dupl));
+        assert(dupl.empty());
+        assert(it != c.end());
+        assert(it->second == 42);
+    }
+
+    assert(c.size() == 11);
+    assert(c.count(0) == 2);
+    for (int i = 1; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c.find(i)->second == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::multimap<int, int> m;
+    test(m);
+    std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..d4ba115
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_node_type_hint.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class multimap
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto it = c.insert({key, mapped});
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(node.empty());
+        assert(prev + 1 == c.size());
+        assert(it == c.find(i));
+        assert(it->first == i);
+        assert(it->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c.find(i)->second == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::multimap<int, int> m;
+    test(m);
+    std::multimap<int, int, std::less<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_rv.pass.cpp
new file mode 100644
index 0000000..7933d69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/insert_rv.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// class multimap
+
+// template <class P>
+//   iterator insert(P&& p);
+
+#include <map>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "test_macros.h"
+
+template <class Container>
+void do_insert_rv_test()
+{
+    typedef std::multimap<int, MoveOnly> M;
+    typedef typename M::iterator R;
+    typedef typename M::value_type VT;
+    M m;
+    R r = m.insert(VT(2, 2));
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(r->first == 2);
+    assert(r->second == 2);
+
+    r = m.insert(VT(1, 1));
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(r->first == 1);
+    assert(r->second == 1);
+
+    r = m.insert(VT(3, 3));
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(r->first == 3);
+    assert(r->second == 3);
+
+    r = m.insert(VT(3, 3));
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 4);
+    assert(r->first == 3);
+    assert(r->second == 3);
+}
+
+int main(int, char**)
+{
+    do_insert_rv_test<std::multimap<int, MoveOnly>>();
+    {
+        typedef std::multimap<int, MoveOnly, std::less<int>, min_allocator<std::pair<const int, MoveOnly>>> M;
+        do_insert_rv_test<M>();
+    }
+    {
+        typedef std::multimap<int, MoveOnly> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert({2, MoveOnly(2)});
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(r->first == 2);
+        assert(r->second == 2);
+
+        r = m.insert({1, MoveOnly(1)});
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(r->first == 1);
+        assert(r->second == 1);
+
+        r = m.insert({3, MoveOnly(3)});
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = m.insert({3, MoveOnly(3)});
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(r->first == 3);
+        assert(r->second == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp
new file mode 100644
index 0000000..078932b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <map>
+
+// class multimap
+
+// template <class C2>
+//   void merge(map<key_type, value_type, C2, allocator_type>& source);
+// template <class C2>
+//   void merge(map<key_type, value_type, C2, allocator_type>&& source);
+// template <class C2>
+//   void merge(multimap<key_type, value_type, C2, allocator_type>& source);
+// template <class C2>
+//   void merge(multimap<key_type, value_type, C2, allocator_type>&& source);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Map>
+bool map_equal(const Map& map, Map other)
+{
+    return map == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct throw_comparator
+{
+    bool& should_throw_;
+
+    throw_comparator(bool& should_throw) : should_throw_(should_throw) {}
+
+    template <class T>
+    bool operator()(const T& lhs, const T& rhs) const
+    {
+        if (should_throw_)
+            throw 0;
+        return lhs < rhs;
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::multimap<int, int> src{{1, 0}, {3, 0}, {5, 0}};
+        std::multimap<int, int> dst{{2, 0}, {4, 0}, {5, 0}};
+        dst.merge(src);
+        assert(map_equal(src, {}));
+        assert(map_equal(dst, {{1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}, {5, 0}}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::multimap<Counter<int>, int, throw_comparator> map_type;
+        map_type src({{1, 0}, {3, 0}, {5, 0}}, throw_comparator(do_throw));
+        map_type dst({{2, 0}, {4, 0}, {5, 0}}, throw_comparator(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(map_equal(src, map_type({{1, 0}, {3, 0}, {5, 0}}, throw_comparator(do_throw))));
+        assert(map_equal(dst, map_type({{2, 0}, {4, 0}, {5, 0}}, throw_comparator(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct comparator
+    {
+        comparator() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs < rhs;
+        }
+    };
+    {
+        typedef std::multimap<Counter<int>, int, std::less<Counter<int>>> first_map_type;
+        typedef std::multimap<Counter<int>, int, comparator> second_map_type;
+        typedef std::map<Counter<int>, int, comparator> third_map_type;
+
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(map_equal(first, {{1, 0}, {1, 0}, {2, 0}, {2, 0}, {3, 0}, {3, 0}, {3, 0}, {4, 0}}));
+            assert(map_equal(second, {}));
+            assert(map_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(map_equal(first, {{1, 0}, {1, 0}, {2, 0}, {2, 0}, {3, 0}, {3, 0}, {3, 0}, {4, 0}}));
+            assert(map_equal(second, {}));
+            assert(map_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    assert(Counter_base::gConstructed == 0);
+    {
+        std::multimap<int, int> first;
+        {
+            std::multimap<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::multimap<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.nonmember/op_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.nonmember/op_compare.pass.cpp
new file mode 100644
index 0000000..be2143c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.nonmember/op_compare.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator==(const std::multimap<Key, T, Compare, Alloc>& lhs,
+//                 const std::multimap<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator!=(const std::multimap<Key, T, Compare, Alloc>& lhs,
+//                 const std::multimap<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator<(const std::multimap<Key, T, Compare, Alloc>& lhs,
+//                const std::multimap<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator>(const std::multimap<Key, T, Compare, Alloc>& lhs,
+//                const std::multimap<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator<=(const std::multimap<Key, T, Compare, Alloc>& lhs,
+//                 const std::multimap<Key, T, Compare, Alloc>& rhs);
+//
+// template<class Key, class T, class Compare, class Alloc>
+// bool operator>=(const std::multimap<Key, T, Compare, Alloc>& lhs,
+//                 const std::multimap<Key, T, Compare, Alloc>& rhs);
+
+#include <map>
+#include <cassert>
+#include <string>
+
+#include "test_comparisons.h"
+
+int main(int, char**) {
+    typedef std::multimap<int, std::string> map_type;
+    typedef map_type::value_type value_type;
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(2, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, true, false));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "ab"));
+        m2.insert(value_type(1, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "bcd"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "abc"));
+        m2.insert(value_type(2, "abc"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    {
+        map_type m1, m2;
+        m1.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "abc"));
+        m2.insert(value_type(1, "bcd"));
+        const map_type& cm1 = m1, cm2 = m2;
+        assert(testComparisons(cm1, cm2, false, true));
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.observers/key_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.observers/key_comp.pass.cpp
new file mode 100644
index 0000000..cc6b18c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.observers/key_comp.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// key_compare key_comp() const;
+
+#include <map>
+#include <cassert>
+#include <string>
+
+int main(int, char**) {
+    typedef std::multimap<int, std::string> map_type;
+
+    map_type m;
+    map_type::iterator i1 = m.insert(map_type::value_type(1, "abc"));
+    map_type::iterator i2 = m.insert(map_type::value_type(2, "abc"));
+
+    const map_type& cm = m;
+
+    assert(cm.key_comp()(i1->first, i2->first));
+    assert(!cm.key_comp()(i2->first, i1->first));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.observers/value_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.observers/value_comp.pass.cpp
new file mode 100644
index 0000000..3b9ed80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.observers/value_comp.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// value_compare value_comp() const;
+
+#include <map>
+#include <cassert>
+#include <string>
+
+int main(int, char**) {
+    typedef std::multimap<int, std::string> map_type;
+
+    map_type m;
+    map_type::iterator i1 = m.insert(map_type::value_type(1, "abc"));
+    map_type::iterator i2 = m.insert(map_type::value_type(2, "abc"));
+
+    const map_type& cm = m;
+
+    assert(cm.value_comp()(*i1, *i2));
+    assert(!cm.value_comp()(*i2, *i1));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count.pass.cpp
new file mode 100644
index 0000000..40b855b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// size_type count(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        typedef M::size_type R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(4);
+        assert(r == 0);
+        r = m.count(5);
+        assert(r == 3);
+        r = m.count(6);
+        assert(r == 0);
+        r = m.count(7);
+        assert(r == 3);
+        r = m.count(8);
+        assert(r == 0);
+        r = m.count(9);
+        assert(r == 3);
+        r = m.count(10);
+        assert(r == 0);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        typedef M::size_type R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(4);
+        assert(r == 0);
+        r = m.count(5);
+        assert(r == 3);
+        r = m.count(6);
+        assert(r == 0);
+        r = m.count(7);
+        assert(r == 3);
+        r = m.count(8);
+        assert(r == 0);
+        r = m.count(9);
+        assert(r == 3);
+        r = m.count(10);
+        assert(r == 0);
+    }
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::multimap<int, double, std::less<>> M;
+    typedef M::size_type R;
+    V ar[] =
+    {
+        V(5, 1),
+        V(5, 2),
+        V(5, 3),
+        V(7, 1),
+        V(7, 2),
+        V(7, 3),
+        V(9, 1),
+        V(9, 2),
+        V(9, 3)
+    };
+    const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.count(4);
+    assert(r == 0);
+    r = m.count(5);
+    assert(r == 3);
+    r = m.count(6);
+    assert(r == 0);
+    r = m.count(7);
+    assert(r == 3);
+    r = m.count(8);
+    assert(r == 0);
+    r = m.count(9);
+    assert(r == 3);
+    r = m.count(10);
+    assert(r == 0);
+
+    r = m.count(C2Int(4));
+    assert(r == 0);
+    r = m.count(C2Int(5));
+    assert(r == 3);
+    r = m.count(C2Int(6));
+    assert(r == 0);
+    r = m.count(C2Int(7));
+    assert(r == 3);
+    r = m.count(C2Int(8));
+    assert(r == 0);
+    r = m.count(C2Int(9));
+    assert(r == 3);
+    r = m.count(C2Int(10));
+    assert(r == 0);
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::multimap<PC, double, std::less<>> M;
+    typedef M::size_type R;
+
+    M m;
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 3 ));
+
+    R r = m.count(4);
+    assert(r == 0);
+    r = m.count(5);
+    assert(r == 3);
+    r = m.count(6);
+    assert(r == 0);
+    r = m.count(7);
+    assert(r == 3);
+    r = m.count(8);
+    assert(r == 0);
+    r = m.count(9);
+    assert(r == 3);
+    r = m.count(10);
+    assert(r == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count0.pass.cpp
new file mode 100644
index 0000000..bb220d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count0.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less> M;
+    assert(M().count(C2Int{5}) == 0);
+    }
+    {
+    typedef std::multimap<int, double, transparent_less_not_referenceable> M;
+    assert(M().count(C2Int{5}) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count1.compile.fail.cpp
new file mode 100644
index 0000000..46231ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count1.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::multimap<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().count(C2Int{5});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count2.compile.fail.cpp
new file mode 100644
index 0000000..f7324aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count2.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::multimap<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().count(C2Int{5});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count3.compile.fail.cpp
new file mode 100644
index 0000000..acceaae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count3.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// size_type count(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::multimap<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().count(C2Int{5});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count_transparent.pass.cpp
new file mode 100644
index 0000000..4bb08c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/count_transparent.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// template<typename K>
+//   size_type count(const K& x) const;        // C++14
+
+#include <cassert>
+#include <map>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::multimap<std::pair<int, int>, int, Comp> s{
+      {{2, 1}, 1}, {{1, 1}, 2}, {{1, 1}, 3}, {{1, 1}, 4}, {{2, 2}, 5}};
+
+  auto cnt = s.count(1);
+  assert(cnt == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range.pass.cpp
new file mode 100644
index 0000000..c134c77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range.pass.cpp
@@ -0,0 +1,288 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <multimap>
+
+// class multimap
+
+// pair<iterator, iterator>             equal_range(const key_type& k);
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first == m.begin());
+        assert(r.second == m.begin());
+        r = m.equal_range(5);
+        assert(r.first == m.begin());
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first == m.end());
+        assert(r.second == m.end());
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first == m.begin());
+        assert(r.second == m.begin());
+        r = m.equal_range(5);
+        assert(r.first == m.begin());
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first == m.end());
+        assert(r.second == m.end());
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first == m.begin());
+        assert(r.second == m.begin());
+        r = m.equal_range(5);
+        assert(r.first == m.begin());
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first == m.end());
+        assert(r.second == m.end());
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first == m.begin());
+        assert(r.second == m.begin());
+        r = m.equal_range(5);
+        assert(r.first == m.begin());
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first == m.end());
+        assert(r.second == m.end());
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::multimap<int, double, std::less<>> M;
+
+    typedef std::pair<M::iterator, M::iterator> R;
+    V ar[] =
+    {
+        V(5, 1),
+        V(5, 2),
+        V(5, 3),
+        V(7, 1),
+        V(7, 2),
+        V(7, 3),
+        V(9, 1),
+        V(9, 2),
+        V(9, 3)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.equal_range(4);
+    assert(r.first == m.begin());
+    assert(r.second == m.begin());
+    r = m.equal_range(5);
+    assert(r.first == m.begin());
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(6);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(7);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(8);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(9);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 9));
+    r = m.equal_range(10);
+    assert(r.first == m.end());
+    assert(r.second == m.end());
+
+    r = m.equal_range(C2Int(4));
+    assert(r.first == m.begin());
+    assert(r.second == m.begin());
+    r = m.equal_range(C2Int(5));
+    assert(r.first == m.begin());
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(C2Int(6));
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(C2Int(7));
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(C2Int(8));
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(C2Int(9));
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 9));
+    r = m.equal_range(C2Int(10));
+    assert(r.first == m.end());
+    assert(r.second == m.end());
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::multimap<PC, double, std::less<>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+
+    M m;
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 3 ));
+
+//  assert(m.size() == 9);
+    R r = m.equal_range(4);
+    assert(r.first == m.begin());
+    assert(r.second == m.begin());
+    r = m.equal_range(5);
+    assert(r.first == m.begin());
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(6);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(7);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(8);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(9);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 9));
+    r = m.equal_range(10);
+    assert(r.first == m.end());
+    assert(r.second == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range0.pass.cpp
new file mode 100644
index 0000000..470ac4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range0.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// pair<iterator, iterator>             equal_range(const key_type& k);
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less> M;
+    typedef std::pair<typename M::iterator, typename M::iterator> P;
+    M example;
+    P result = example.equal_range(C2Int{5});
+    assert(result.first == result.second);
+    }
+    {
+    typedef std::multimap<int, double, transparent_less_not_referenceable> M;
+    typedef std::pair<typename M::iterator, typename M::iterator> P;
+    M example;
+    P result = example.equal_range(C2Int{5});
+    assert(result.first == result.second);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range1.compile.fail.cpp
new file mode 100644
index 0000000..dff6e13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range1.compile.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// pair<iterator, iterator>             equal_range(const key_type& k);
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::multimap<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().equal_range(C2Int{5});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range2.compile.fail.cpp
new file mode 100644
index 0000000..a57c840
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// pair<iterator, iterator>             equal_range(const key_type& k);
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().equal_range(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range3.compile.fail.cpp
new file mode 100644
index 0000000..e215d0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// pair<iterator, iterator>             equal_range(const key_type& k);
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().equal_range(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range_transparent.pass.cpp
new file mode 100644
index 0000000..4315d57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/equal_range_transparent.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+// template<typename K>
+//         pair<iterator,iterator>             equal_range(const K& x); // C++14
+// template<typename K>
+//         pair<const_iterator,const_iterator> equal_range(const K& x) const;
+//         // C++14
+
+#include <cassert>
+#include <map>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::multimap<std::pair<int, int>, int, Comp> s{
+      {{2, 1}, 1}, {{1, 1}, 2}, {{1, 1}, 3}, {{1, 1}, 4}, {{2, 2}, 5}};
+
+  auto er = s.equal_range(1);
+  long nels = 0;
+
+  for (auto it = er.first; it != er.second; it++) {
+    assert(it->first.first == 1);
+    nels++;
+  }
+
+  assert(nels == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find.pass.cpp
new file mode 100644
index 0000000..550e49a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find.pass.cpp
@@ -0,0 +1,224 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == m.end());
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(8);
+        assert(r == m.end());
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(10);
+        assert(r == m.end());
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == m.end());
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(8);
+        assert(r == m.end());
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(10);
+        assert(r == m.end());
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == m.end());
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(8);
+        assert(r == m.end());
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(10);
+        assert(r == m.end());
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == m.end());
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(8);
+        assert(r == m.end());
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(10);
+        assert(r == m.end());
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::multimap<int, double, std::less<>> M;
+    typedef M::iterator R;
+
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == m.end());
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(8);
+        assert(r == m.end());
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(10);
+        assert(r == m.end());
+
+        r = m.find(C2Int(5));
+        assert(r == m.begin());
+        r = m.find(C2Int(6));
+        assert(r == m.end());
+        r = m.find(C2Int(7));
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(C2Int(8));
+        assert(r == m.end());
+        r = m.find(C2Int(9));
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(C2Int(10));
+        assert(r == m.end());
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::multimap<PC, double, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 3 ));
+
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == m.end());
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(8);
+    assert(r == m.end());
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(10);
+    assert(r == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find0.pass.cpp
new file mode 100644
index 0000000..d5f3969
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find0.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less> M;
+    M example;
+    assert(example.find(C2Int{5}) == example.end());
+    }
+    {
+    typedef std::multimap<int, double, transparent_less_not_referenceable> M;
+    M example;
+    assert(example.find(C2Int{5}) == example.end());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find1.compile.fail.cpp
new file mode 100644
index 0000000..162d334
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().find(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find2.compile.fail.cpp
new file mode 100644
index 0000000..fe3756e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class map
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().find(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find3.compile.fail.cpp
new file mode 100644
index 0000000..b5cce48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/find3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().find(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound.pass.cpp
new file mode 100644
index 0000000..aae11c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound.pass.cpp
@@ -0,0 +1,238 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(4);
+        assert(r == m.begin());
+        r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(10);
+        assert(r == m.end());
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(4);
+        assert(r == m.begin());
+        r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(10);
+        assert(r == m.end());
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(4);
+        assert(r == m.begin());
+        r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(10);
+        assert(r == m.end());
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(4);
+        assert(r == m.begin());
+        r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(10);
+        assert(r == m.end());
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::multimap<int, double, std::less<>> M;
+    typedef M::iterator R;
+    V ar[] =
+    {
+        V(5, 1),
+        V(5, 2),
+        V(5, 3),
+        V(7, 1),
+        V(7, 2),
+        V(7, 3),
+        V(9, 1),
+        V(9, 2),
+        V(9, 3)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.lower_bound(4);
+    assert(r == m.begin());
+    r = m.lower_bound(5);
+    assert(r == m.begin());
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(10);
+    assert(r == m.end());
+
+    r = m.lower_bound(C2Int(4));
+    assert(r == m.begin());
+    r = m.lower_bound(C2Int(5));
+    assert(r == m.begin());
+    r = m.lower_bound(C2Int(6));
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(C2Int(7));
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(C2Int(8));
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(C2Int(9));
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(C2Int(10));
+    assert(r == m.end());
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::multimap<PC, double, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 3 ));
+
+    R r = m.lower_bound(4);
+    assert(r == m.begin());
+    r = m.lower_bound(5);
+    assert(r == m.begin());
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(10);
+    assert(r == m.end());
+    }
+
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound0.pass.cpp
new file mode 100644
index 0000000..be6987d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound0.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less> M;
+    M example;
+    assert(example.lower_bound(C2Int{5}) == example.end());
+    }
+    {
+    typedef std::multimap<int, double, transparent_less_not_referenceable> M;
+    M example;
+    assert(example.lower_bound(C2Int{5}) == example.end());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound1.compile.fail.cpp
new file mode 100644
index 0000000..d8b34e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().lower_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound2.compile.fail.cpp
new file mode 100644
index 0000000..303e17a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().lower_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound3.compile.fail.cpp
new file mode 100644
index 0000000..8eb96a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/lower_bound3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().lower_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound.pass.cpp
new file mode 100644
index 0000000..35c2541
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound.pass.cpp
@@ -0,0 +1,237 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == m.begin());
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(10);
+        assert(r == m.end());
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == m.begin());
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(10);
+        assert(r == m.end());
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == m.begin());
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(10);
+        assert(r == m.end());
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            V(5, 1),
+            V(5, 2),
+            V(5, 3),
+            V(7, 1),
+            V(7, 2),
+            V(7, 3),
+            V(9, 1),
+            V(9, 2),
+            V(9, 3)
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == m.begin());
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(10);
+        assert(r == m.end());
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef std::multimap<int, double, std::less<>> M;
+    typedef M::iterator R;
+    V ar[] =
+    {
+        V(5, 1),
+        V(5, 2),
+        V(5, 3),
+        V(7, 1),
+        V(7, 2),
+        V(7, 3),
+        V(9, 1),
+        V(9, 2),
+        V(9, 3)
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.upper_bound(4);
+    assert(r == m.begin());
+    r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 9));
+    r = m.upper_bound(10);
+    assert(r == m.end());
+
+    r = m.upper_bound(C2Int(4));
+    assert(r == m.begin());
+    r = m.upper_bound(C2Int(5));
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(C2Int(6));
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(C2Int(7));
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(C2Int(8));
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(C2Int(9));
+    assert(r == std::next(m.begin(), 9));
+    r = m.upper_bound(C2Int(10));
+    }
+
+    {
+    typedef PrivateConstructor PC;
+    typedef std::multimap<PC, double, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(5), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(7), 3 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 1 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 2 ));
+    m.insert ( std::make_pair<PC, double> ( PC::make(9), 3 ));
+
+    R r = m.upper_bound(4);
+    assert(r == m.begin());
+    r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 9));
+    r = m.upper_bound(10);
+    assert(r == m.end());
+    }
+
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound0.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound0.pass.cpp
new file mode 100644
index 0000000..4ffda7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound0.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less> M;
+    M example;
+    assert(example.upper_bound(C2Int{5}) == example.end());
+    }
+    {
+    typedef std::multimap<int, double, transparent_less_not_referenceable> M;
+    M example;
+    assert(example.upper_bound(C2Int{5}) == example.end());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound1.compile.fail.cpp
new file mode 100644
index 0000000..4d09bc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound1.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_no_type> M;
+
+    TEST_IGNORE_NODISCARD M().upper_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound2.compile.fail.cpp
new file mode 100644
index 0000000..6494ae3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound2.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_private> M;
+
+    TEST_IGNORE_NODISCARD M().upper_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound3.compile.fail.cpp
new file mode 100644
index 0000000..246ef08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.ops/upper_bound3.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <map>
+
+// class multimap
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+//
+//   The member function templates find, count, lower_bound, upper_bound, and
+// equal_range shall not participate in overload resolution unless the
+// qualified-id Compare::is_transparent is valid and denotes a type
+
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double, transparent_less_not_a_type> M;
+
+    TEST_IGNORE_NODISCARD M().upper_bound(C2Int{5});
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/member_swap.pass.cpp
new file mode 100644
index 0000000..dfe2831
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/member_swap.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// void swap(multimap& m);
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/non_member_swap.pass.cpp
new file mode 100644
index 0000000..82a838d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/non_member_swap.pass.cpp
@@ -0,0 +1,283 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// template <class Key, class T, class Compare, class Allocator>
+//   void
+//   swap(multimap<Key, T, Compare, Allocator>& x, multimap<Key, T, Compare, Allocator>& y);
+
+#include <map>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../test_compare.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::pair<const int, double> V;
+    {
+    typedef std::multimap<int, double> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+    {
+        typedef test_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::multimap<int, double, C, A> M;
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1, 1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(1, 2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator().get_id() == 1);
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef other_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::multimap<int, double, C, A> M;
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator() == A(2));
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator() == A(1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+    {
+        typedef min_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::multimap<int, double, C, A> M;
+        V ar1[] =
+        {
+            V(1, 1),
+            V(2, 2),
+            V(3, 3),
+            V(4, 4)
+        };
+        V ar2[] =
+        {
+            V(5, 5),
+            V(6, 6),
+            V(7, 7),
+            V(8, 8),
+            V(9, 9),
+            V(10, 10),
+            V(11, 11),
+            V(12, 12)
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A());
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A());
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator() == A());
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..00ec83d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.special/swap_noexcept.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <map>
+
+// void swap(multimap& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//              noexcept(swap(declval<Compare&>(), declval<Compare&>())));
+
+// This tests a conforming extension
+
+#include <map>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::multimap<MoveOnly, MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc <V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc2<V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc <V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc2<V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for comp
+    typedef std::multimap<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc3<V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.value_compare/invoke.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.value_compare/invoke.pass.cpp
new file mode 100644
index 0000000..75a1114
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.value_compare/invoke.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class value_compare
+
+// bool operator()( const value_type& lhs, const value_type& rhs ) const;
+
+#include <map>
+#include <cassert>
+#include <string>
+#include <utility>
+
+template <typename MMap>
+struct CallCompMember : MMap::value_compare {
+    CallCompMember(const typename MMap::value_compare& vc) : MMap::value_compare(vc) {}
+
+    typedef typename MMap::value_type value_type;
+    bool operator()(const value_type& value1, const value_type& value2) const {
+        return this->comp(value1.first, value2.first);
+    }
+};
+
+int main(int, char**) {
+    typedef std::multimap<int, std::string> map_type;
+
+    map_type m;
+    map_type::iterator i1 = m.insert(map_type::value_type(1, "abc"));
+    map_type::iterator i2 = m.insert(map_type::value_type(2, "abc"));
+
+    const map_type::value_compare vc = m.value_comp();
+    CallCompMember<map_type> call_comp = m.value_comp();
+
+    assert(vc(*i1, *i2));
+    assert(call_comp(*i1, *i2));
+
+    assert(!vc(*i2, *i1));
+    assert(!call_comp(*i2, *i1));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.value_compare/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.value_compare/types.pass.cpp
new file mode 100644
index 0000000..6ecaf92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/multimap.value_compare/types.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class value_compare
+
+// REQUIRES: c++98 || c++03 || c++11 || c++14
+
+#include <map>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::multimap<int, std::string> map_type;
+    typedef map_type::value_compare value_compare;
+    typedef map_type::value_type value_type;
+
+    ASSERT_SAME_TYPE(value_compare::result_type, bool);
+    ASSERT_SAME_TYPE(value_compare::first_argument_type, value_type);
+    ASSERT_SAME_TYPE(value_compare::second_argument_type, value_type);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..fe382db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// multimap
+
+#include <map>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::multimap<int, int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(!std::ranges::random_access_range<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(!std::ranges::random_access_range<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/scary.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/scary.pass.cpp
new file mode 100644
index 0000000..7dcd4e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/scary.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class map class multimap
+
+// Extension:  SCARY/N2913 iterator compatibility between map and multimap
+
+#include <map>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::map<int, int> M1;
+    typedef std::multimap<int, int> M2;
+    M2::iterator i;
+    M1::iterator j = i;
+    ((void)j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/size.pass.cpp
new file mode 100644
index 0000000..fdb8f72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/size.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// class multimap
+
+// size_type size() const;
+
+#include <map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/types.pass.cpp
new file mode 100644
index 0000000..c9d2f3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multimap/types.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <map>
+
+// template <class Key, class T, class Compare = less<Key>,
+//           class Allocator = allocator<pair<const Key, T>>>
+// class multimap
+// {
+// public:
+//     // types:
+//     typedef Key                                      key_type;
+//     typedef T                                        mapped_type;
+//     typedef pair<const key_type, mapped_type>        value_type;
+//     typedef Compare                                  key_compare;
+//     typedef Allocator                                allocator_type;
+//     typedef typename allocator_type::reference       reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     ...
+// };
+
+#include <map>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multimap<int, double> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::mapped_type, double>::value), "");
+    static_assert((std::is_same<C::value_type, std::pair<const int, double> >::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, std::allocator<std::pair<const int, double> > >::value), "");
+    static_assert((std::is_same<C::reference, std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::const_reference, const std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::pointer, std::pair<const int, double>*>::value), "");
+    static_assert((std::is_same<C::const_pointer, const std::pair<const int, double>*>::value), "");
+    static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multimap<int, double, std::less<int>, min_allocator<std::pair<const int, double>>> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::mapped_type, double>::value), "");
+    static_assert((std::is_same<C::value_type, std::pair<const int, double> >::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<std::pair<const int, double> > >::value), "");
+    static_assert((std::is_same<C::reference, std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::const_reference, const std::pair<const int, double>&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<std::pair<const int, double>>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const std::pair<const int, double>>>::value), "");
+//  min_allocator doesn't have a size_type, so one gets synthesized
+    static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..86e1b30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+//   The container's value type must be the same as the allocator's value type
+
+#include <set>
+
+int main(int, char**)
+{
+    std::multiset<int, std::less<int>, std::allocator<long> > ms;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/clear.pass.cpp
new file mode 100644
index 0000000..93f9fef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/clear.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// void clear() noexcept;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<int> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/count.pass.cpp
new file mode 100644
index 0000000..21575fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/count.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// size_type count(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::multiset<int> M;
+    {
+        typedef M::size_type R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(4);
+        assert(r == 0);
+        r = m.count(5);
+        assert(r == 4);
+        r = m.count(6);
+        assert(r == 0);
+        r = m.count(7);
+        assert(r == 3);
+        r = m.count(8);
+        assert(r == 0);
+        r = m.count(9);
+        assert(r == 2);
+        r = m.count(10);
+        assert(r == 0);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+    {
+        typedef M::size_type R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(4);
+        assert(r == 0);
+        r = m.count(5);
+        assert(r == 4);
+        r = m.count(6);
+        assert(r == 0);
+        r = m.count(7);
+        assert(r == 3);
+        r = m.count(8);
+        assert(r == 0);
+        r = m.count(9);
+        assert(r == 2);
+        r = m.count(10);
+        assert(r == 0);
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::multiset<int, std::less<>> M;
+    typedef M::size_type R;
+    V ar[] =
+    {
+        5,
+        5,
+        5,
+        5,
+        7,
+        7,
+        7,
+        9,
+        9
+    };
+    const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.count(4);
+    assert(r == 0);
+    r = m.count(5);
+    assert(r == 4);
+    r = m.count(6);
+    assert(r == 0);
+    r = m.count(7);
+    assert(r == 3);
+    r = m.count(8);
+    assert(r == 0);
+    r = m.count(9);
+    assert(r == 2);
+    r = m.count(10);
+    assert(r == 0);
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::multiset<V, std::less<>> M;
+    typedef M::size_type R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+
+    R r = m.count(4);
+    assert(r == 0);
+    r = m.count(5);
+    assert(r == 4);
+    r = m.count(6);
+    assert(r == 0);
+    r = m.count(7);
+    assert(r == 3);
+    r = m.count(8);
+    assert(r == 0);
+    r = m.count(9);
+    assert(r == 2);
+    r = m.count(10);
+    assert(r == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/count_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/count_transparent.pass.cpp
new file mode 100644
index 0000000..5e6add9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/count_transparent.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <set>
+
+// class multiset
+
+// template<typename K>
+//     size_type count(const K& x) const;        // C++14
+
+#include <cassert>
+#include <set>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::multiset<std::pair<int, int>, Comp> s{{2, 1}, {1, 1}, {1, 1}, {1, 1}, {2, 2}};
+
+  auto cnt = s.count(1);
+  assert(cnt == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/emplace.pass.cpp
new file mode 100644
index 0000000..62ac366
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/emplace.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// template <class... Args>
+//   iterator emplace(Args&&... args);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<DefaultOnly> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+
+        r = m.emplace();
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::multiset<Emplaceable> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace();
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == Emplaceable());
+        r = m.emplace(2, 3.5);
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r == Emplaceable(2, 3.5));
+        r = m.emplace(2, 3.5);
+        assert(r == std::next(m.begin(), 2));
+        assert(m.size() == 3);
+        assert(*r == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::multiset<int> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace(M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+    }
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace(M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/emplace_hint.pass.cpp
new file mode 100644
index 0000000..f865d17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/emplace_hint.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// template <class... Args>
+//   iterator emplace_hint(const_iterator position, Args&&... args);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<DefaultOnly> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace_hint(m.cend());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+
+        r = m.emplace_hint(m.cbegin());
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 2);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::multiset<Emplaceable> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == Emplaceable());
+        r = m.emplace_hint(m.cend(), 2, 3.5);
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r == Emplaceable(2, 3.5));
+        r = m.emplace_hint(m.cbegin(), 2, 3.5);
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 3);
+        assert(*r == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::multiset<int> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+    }
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/empty.pass.cpp
new file mode 100644
index 0000000..837c990
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/empty.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// bool empty() const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multiset<int> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/empty.verify.cpp
new file mode 100644
index 0000000..87c02e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <set>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::multiset<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/equal_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/equal_range.pass.cpp
new file mode 100644
index 0000000..9d1e25d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/equal_range.pass.cpp
@@ -0,0 +1,265 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::multiset<int> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(5);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first  == std::next(m.begin(), 9));
+        assert(r.second == std::next(m.begin(), 9));
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(5);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first  == std::next(m.begin(), 9));
+        assert(r.second == std::next(m.begin(), 9));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(5);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first  == std::next(m.begin(), 9));
+        assert(r.second == std::next(m.begin(), 9));
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(4);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(5);
+        assert(r.first  == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(6);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(7);
+        assert(r.first  == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(8);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(9);
+        assert(r.first  == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 9));
+        r = m.equal_range(10);
+        assert(r.first  == std::next(m.begin(), 9));
+        assert(r.second == std::next(m.begin(), 9));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::multiset<V, std::less<>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+    V ar[] =
+    {
+        5,
+        5,
+        5,
+        7,
+        7,
+        7,
+        9,
+        9,
+        9
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.equal_range(4);
+    assert(r.first  == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(5);
+    assert(r.first  == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(6);
+    assert(r.first  == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(7);
+    assert(r.first  == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(8);
+    assert(r.first  == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(9);
+    assert(r.first  == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 9));
+    r = m.equal_range(10);
+    assert(r.first  == std::next(m.begin(), 9));
+    assert(r.second == std::next(m.begin(), 9));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::multiset<V, std::less<>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+
+    R r = m.equal_range(4);
+    assert(r.first  == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(5);
+    assert(r.first  == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(6);
+    assert(r.first  == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(7);
+    assert(r.first  == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(8);
+    assert(r.first  == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(9);
+    assert(r.first  == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 9));
+    r = m.equal_range(10);
+    assert(r.first  == std::next(m.begin(), 9));
+    assert(r.second == std::next(m.begin(), 9));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/equal_range_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/equal_range_transparent.pass.cpp
new file mode 100644
index 0000000..06b4550
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/equal_range_transparent.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <set>
+
+// class multiset
+
+// template<typename K>
+//     pair<iterator,iterator>             equal_range(const K& x);        //
+//     C++14
+// template<typename K>
+//     pair<const_iterator,const_iterator> equal_range(const K& x) const;  //
+//     C++14
+
+#include <cassert>
+#include <set>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::multiset<std::pair<int, int>, Comp> s{{2, 1}, {1, 1}, {1, 1}, {1, 1}, {2, 2}};
+
+  auto er = s.equal_range(1);
+  long nels = 0;
+
+  for (auto it = er.first; it != er.second; it++) {
+    assert(it->first == 1);
+    nels++;
+  }
+
+  assert(nels == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_iter.pass.cpp
new file mode 100644
index 0000000..a42d48b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_iter.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// iterator erase(const_iterator position);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator<(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<int> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 5);
+        assert(i == m.end());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin()));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 6);
+        assert(*std::next(m.begin(), 3) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 1);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 5);
+        assert(i == m.end());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin()));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 6);
+        assert(*std::next(m.begin(), 3) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 1);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::multiset<T> C;
+        typedef C::iterator I;
+
+        C c;
+        T a{0};
+        I it = c.find(a);
+        if (it != c.end())
+            c.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..54f6949
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_iter_iter.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<int> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 5), std::next(m.cbegin(), 5));
+        assert(m.size() == 8);
+        assert(i == std::next(m.begin(), 5));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 4);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 6);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 3), std::next(m.cbegin(), 4));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 5));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 7);
+        assert(*std::next(m.begin(), 3) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0), std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 7);
+        assert(*std::next(m.begin(), 1) == 8);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 5), std::next(m.cbegin(), 5));
+        assert(m.size() == 8);
+        assert(i == std::next(m.begin(), 5));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 4);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 6);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 3), std::next(m.cbegin(), 4));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 5));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 7);
+        assert(*std::next(m.begin(), 3) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0), std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 7);
+        assert(*std::next(m.begin(), 1) == 8);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_key.pass.cpp
new file mode 100644
index 0000000..fa5c9d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/erase_key.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// size_type erase(const key_type& k);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<int> M;
+        typedef int V;
+        typedef M::size_type I;
+        V ar[] =
+        {
+            3,
+            3,
+            3,
+            5,
+            5,
+            5,
+            7,
+            7,
+            7
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 9);
+        I i = m.erase(6);
+        assert(m.size() == 9);
+        assert(i == 0);
+        assert(*std::next(m.begin(), 0) == 3);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 5);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 7);
+        assert(*std::next(m.begin(), 8) == 7);
+
+        i = m.erase(5);
+        assert(m.size() == 6);
+        assert(i == 3);
+        assert(*std::next(m.begin(), 0) == 3);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 7);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 7);
+
+        i = m.erase(3);
+        assert(m.size() == 3);
+        assert(i == 3);
+        assert(*std::next(m.begin(), 0) == 7);
+        assert(*std::next(m.begin(), 1) == 7);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(7);
+        assert(m.size() == 0);
+        assert(i == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        typedef M::size_type I;
+        V ar[] =
+        {
+            3,
+            3,
+            3,
+            5,
+            5,
+            5,
+            7,
+            7,
+            7
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 9);
+        I i = m.erase(6);
+        assert(m.size() == 9);
+        assert(i == 0);
+        assert(*std::next(m.begin(), 0) == 3);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 5);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 7);
+        assert(*std::next(m.begin(), 8) == 7);
+
+        i = m.erase(5);
+        assert(m.size() == 6);
+        assert(i == 3);
+        assert(*std::next(m.begin(), 0) == 3);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 7);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 7);
+
+        i = m.erase(3);
+        assert(m.size() == 3);
+        assert(i == 3);
+        assert(*std::next(m.begin(), 0) == 7);
+        assert(*std::next(m.begin(), 1) == 7);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(7);
+        assert(m.size() == 0);
+        assert(i == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/extract_iterator.pass.cpp
new file mode 100644
index 0000000..bce568e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/extract_iterator.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class multiset
+
+// node_type extract(const_iterator);
+
+#include <set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = *first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.value() == key_value);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using set_type = std::multiset<int>;
+        set_type m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+    {
+        std::multiset<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        assert(Counter_base::gConstructed == 6);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::multiset<int, std::less<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/extract_key.pass.cpp
new file mode 100644
index 0000000..d92d4ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/extract_key.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class multiset
+
+// node_type extract(key_type const&);
+
+#include <set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.value() == *copy);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::multiset<int> m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::multiset<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 6+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::multiset<int, std::less<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/find.pass.cpp
new file mode 100644
index 0000000..da75b5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/find.pass.cpp
@@ -0,0 +1,242 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        typedef std::multiset<int> M;
+        {
+            typedef M::iterator R;
+            V ar[] =
+            {
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            };
+            M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.find(5);
+            assert(r == m.begin());
+            r = m.find(6);
+            assert(r == std::next(m.begin()));
+            r = m.find(7);
+            assert(r == std::next(m.begin(), 2));
+            r = m.find(8);
+            assert(r == std::next(m.begin(), 3));
+            r = m.find(9);
+            assert(r == std::next(m.begin(), 4));
+            r = m.find(10);
+            assert(r == std::next(m.begin(), 5));
+            r = m.find(11);
+            assert(r == std::next(m.begin(), 6));
+            r = m.find(12);
+            assert(r == std::next(m.begin(), 7));
+            r = m.find(4);
+            assert(r == std::next(m.begin(), 8));
+        }
+        {
+            typedef M::const_iterator R;
+            V ar[] =
+            {
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            };
+            const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.find(5);
+            assert(r == m.begin());
+            r = m.find(6);
+            assert(r == std::next(m.begin()));
+            r = m.find(7);
+            assert(r == std::next(m.begin(), 2));
+            r = m.find(8);
+            assert(r == std::next(m.begin(), 3));
+            r = m.find(9);
+            assert(r == std::next(m.begin(), 4));
+            r = m.find(10);
+            assert(r == std::next(m.begin(), 5));
+            r = m.find(11);
+            assert(r == std::next(m.begin(), 6));
+            r = m.find(12);
+            assert(r == std::next(m.begin(), 7));
+            r = m.find(4);
+            assert(r == std::next(m.begin(), 8));
+        }
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        {
+            typedef M::iterator R;
+            V ar[] =
+            {
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            };
+            M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.find(5);
+            assert(r == m.begin());
+            r = m.find(6);
+            assert(r == std::next(m.begin()));
+            r = m.find(7);
+            assert(r == std::next(m.begin(), 2));
+            r = m.find(8);
+            assert(r == std::next(m.begin(), 3));
+            r = m.find(9);
+            assert(r == std::next(m.begin(), 4));
+            r = m.find(10);
+            assert(r == std::next(m.begin(), 5));
+            r = m.find(11);
+            assert(r == std::next(m.begin(), 6));
+            r = m.find(12);
+            assert(r == std::next(m.begin(), 7));
+            r = m.find(4);
+            assert(r == std::next(m.begin(), 8));
+        }
+        {
+            typedef M::const_iterator R;
+            V ar[] =
+            {
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            };
+            const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.find(5);
+            assert(r == m.begin());
+            r = m.find(6);
+            assert(r == std::next(m.begin()));
+            r = m.find(7);
+            assert(r == std::next(m.begin(), 2));
+            r = m.find(8);
+            assert(r == std::next(m.begin(), 3));
+            r = m.find(9);
+            assert(r == std::next(m.begin(), 4));
+            r = m.find(10);
+            assert(r == std::next(m.begin(), 5));
+            r = m.find(11);
+            assert(r == std::next(m.begin(), 6));
+            r = m.find(12);
+            assert(r == std::next(m.begin(), 7));
+            r = m.find(4);
+            assert(r == std::next(m.begin(), 8));
+        }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::multiset<V, std::less<>> M;
+    typedef M::iterator R;
+
+    V ar[] =
+    {
+        5,
+        6,
+        7,
+        8,
+        9,
+        10,
+        11,
+        12
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == std::next(m.begin()));
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(8);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(10);
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(11);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(12);
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(4);
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::multiset<V, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 6 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 8 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 10 ));
+    m.insert ( V::make ( 11 ));
+    m.insert ( V::make ( 12 ));
+
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == std::next(m.begin()));
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(8);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(10);
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(11);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(12);
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(4);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/get_allocator.pass.cpp
new file mode 100644
index 0000000..3d0d8a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/get_allocator.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// allocator_type get_allocator() const
+
+#include <set>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::multiset<int> s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::multiset<int, std::less<int>, other_allocator<int> > s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/incomplete_type.pass.cpp
new file mode 100644
index 0000000..4f2970d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/incomplete_type.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// Check that std::multiset and its iterators can be instantiated with an incomplete
+// type.
+
+#include <set>
+
+#include "test_macros.h"
+
+struct A {
+    typedef std::multiset<A> Set;
+    int data;
+    Set m;
+    Set::iterator it;
+    Set::const_iterator cit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+inline bool operator<(A const& L, A const& R)  { return L.data < R.data; }
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_cv.pass.cpp
new file mode 100644
index 0000000..b8a36ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_cv.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// iterator insert(const value_type& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_cv_test()
+{
+    typedef Container M;
+    typedef typename M::iterator R;
+    typedef typename M::value_type VT;
+    M m;
+    const VT v1(2);
+    R r = m.insert(v1);
+    assert(r == m.begin());
+    assert(m.size() == 1);
+    assert(*r == 2);
+
+    const VT v2(1);
+    r = m.insert(v2);
+    assert(r == m.begin());
+    assert(m.size() == 2);
+    assert(*r == 1);
+
+    const VT v3(3);
+    r = m.insert(v3);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(*r == 3);
+
+    r = m.insert(v3);
+    assert(r == std::prev(m.end()));
+    assert(m.size() == 4);
+    assert(*r == 3);
+}
+
+int main(int, char**)
+{
+    do_insert_cv_test<std::multiset<int> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        do_insert_cv_test<M>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_emplace_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_emplace_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..232748f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_emplace_allocator_requirements.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// insert(...)
+
+// UNSUPPORTED: c++03
+
+#include <set>
+
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../set_allocator_requirement_test_templates.h"
+
+int main(int, char**)
+{
+  testMultisetInsert<TCT::multiset<> >();
+  testMultisetEmplace<TCT::multiset<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_initializer_list.pass.cpp
new file mode 100644
index 0000000..9c870b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_initializer_list.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// void insert(initializer_list<value_type> il);
+
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multiset<int> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m.insert({1, 2, 3, 4, 5, 6});
+    assert(m.size() == 8);
+    assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(*++i == V(8));
+    assert(*++i == V(10));
+    }
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m.insert({1, 2, 3, 4, 5, 6});
+    assert(m.size() == 8);
+    assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(*++i == V(8));
+    assert(*++i == V(10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_cv.pass.cpp
new file mode 100644
index 0000000..242e801
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_cv.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// iterator insert(const_iterator position, const value_type& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<int> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(*r == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(*r == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_iter.pass.cpp
new file mode 100644
index 0000000..23d44b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_iter.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// template <class InputIterator>
+//   void insert(InputIterator first, InputIterator last);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<int> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        M m;
+        m.insert(cpp17_input_iterator<const V*>(ar),
+                 cpp17_input_iterator<const V*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        M m;
+        m.insert(cpp17_input_iterator<const V*>(ar),
+                 cpp17_input_iterator<const V*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_rv.pass.cpp
new file mode 100644
index 0000000..75df25e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_iter_rv.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// iterator insert(const_iterator position, value_type&& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<MoveOnly> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(*r == 3);
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, min_allocator<MoveOnly>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(*r == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_node_type.pass.cpp
new file mode 100644
index 0000000..bc0d9bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_node_type.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class multiset
+
+// iterator insert(node_type&&);
+
+#include <set>
+#include <type_traits>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto it = c.insert(key);
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        typename Container::iterator it = c.insert(std::move(node));
+        assert(node.empty());
+        assert(it == c.find(i) && it != c.end());
+        assert(*it == i);
+        assert(node.empty());
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto it = c.insert(std::move(def));
+        assert(def.empty());
+        assert(it == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0);
+        auto it = c.insert(std::move(dupl));
+        assert(*it == 0);
+    }
+
+    assert(c.size() == 11);
+
+    assert(c.count(0) == 2);
+    for (int i = 1; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::multiset<int> m;
+    test(m);
+    std::multiset<int, std::less<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..00d0b67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_node_type_hint.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class multiset
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <set>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto it = c.insert(key);
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(prev + 1 == c.size());
+        assert(*it == i);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::multiset<int> m;
+    test(m);
+    std::multiset<int, std::less<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_rv.pass.cpp
new file mode 100644
index 0000000..d34c968
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/insert_rv.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// iterator insert(value_type&& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<MoveOnly> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(*r == 3);
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, min_allocator<MoveOnly>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 4);
+        assert(*r == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/iterator.pass.cpp
new file mode 100644
index 0000000..27a8dbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/iterator.pass.cpp
@@ -0,0 +1,246 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+//       iterator begin();
+// const_iterator begin() const;
+//       iterator end();
+// const_iterator end()   const;
+//
+//       reverse_iterator rbegin();
+// const_reverse_iterator rbegin() const;
+//       reverse_iterator rend();
+// const_reverse_iterator rend()   const;
+//
+// const_iterator         cbegin()  const;
+// const_iterator         cend()    const;
+// const_reverse_iterator crbegin() const;
+// const_reverse_iterator crend()   const;
+
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        std::multiset<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::multiset<int>::iterator i;
+        i = m.begin();
+        std::multiset<int>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; j <= 8; ++j)
+            for (int n = 0; n < 3; ++n, ++i)
+                assert(*i == j);
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (int n = 0; n < 3; ++n) {
+                --i;
+                assert(*i == j);
+            }
+        assert(i == m.begin());
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        const std::multiset<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::multiset<int>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; j <= 8; ++j)
+            for (int k = 0; k < 3; ++k, ++i)
+                assert(*i == j);
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (int k = 0; k < 3; ++k) {
+                --i;
+                assert(*i == j);
+            }
+        assert(i == m.begin());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        std::multiset<int, std::less<int>, min_allocator<int>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::multiset<int, std::less<int>, min_allocator<int>>::iterator i;
+        i = m.begin();
+        std::multiset<int, std::less<int>, min_allocator<int>>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; j <= 8; ++j)
+            for (int n = 0; n < 3; ++n, ++i)
+                assert(*i == j);
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (int n = 0; n < 3; ++n) {
+                --i;
+                assert(*i == j);
+            }
+        assert(i == m.begin());
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        const std::multiset<int, std::less<int>, min_allocator<int>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::multiset<int, std::less<int>, min_allocator<int>>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; j <= 8; ++j)
+            for (int k = 0; k < 3; ++k, ++i)
+                assert(*i == j);
+        assert(i == m.end());
+        for (int j = 8; j >= 1; --j)
+            for (int k = 0; k < 3; ++k) {
+                --i;
+                assert(*i == j);
+            }
+        assert(i == m.begin());
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::multiset<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..d452afc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <set>
+
+#include <iterator>
+
+using iterator = std::multiset<int>::iterator;
+using const_iterator = std::multiset<int>::const_iterator;
+using reverse_iterator = std::multiset<int>::reverse_iterator;
+using const_reverse_iterator = std::multiset<int>::const_reverse_iterator;
+using value_type = int;
+
+static_assert(std::bidirectional_iterator<iterator>);
+static_assert(!std::random_access_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_movable<iterator, int*>);
+static_assert(std::indirectly_movable_storable<iterator, int*>);
+static_assert(std::indirectly_copyable<iterator, int*>);
+static_assert(std::indirectly_copyable_storable<iterator, int*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::bidirectional_iterator<const_iterator>);
+static_assert(!std::random_access_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/lower_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/lower_bound.pass.cpp
new file mode 100644
index 0000000..d391da8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/lower_bound.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        typedef std::multiset<int> M;
+        {
+            typedef M::iterator R;
+            V ar[] =
+            {
+                5,
+                5,
+                5,
+                7,
+                7,
+                7,
+                9,
+                9,
+                9
+            };
+            M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.lower_bound(4);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(5);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(6);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(7);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(8);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(9);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(11);
+            assert(r == std::next(m.begin(), 9));
+        }
+        {
+            typedef M::const_iterator R;
+            V ar[] =
+            {
+                5,
+                5,
+                5,
+                7,
+                7,
+                7,
+                9,
+                9,
+                9
+            };
+            const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.lower_bound(4);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(5);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(6);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(7);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(8);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(9);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(11);
+            assert(r == std::next(m.begin(), 9));
+        }
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+        {
+            typedef M::iterator R;
+            V ar[] =
+            {
+                5,
+                5,
+                5,
+                7,
+                7,
+                7,
+                9,
+                9,
+                9
+            };
+            M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.lower_bound(4);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(5);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(6);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(7);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(8);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(9);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(11);
+            assert(r == std::next(m.begin(), 9));
+        }
+        {
+            typedef M::const_iterator R;
+            V ar[] =
+            {
+                5,
+                5,
+                5,
+                7,
+                7,
+                7,
+                9,
+                9,
+                9
+            };
+            const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+            R r = m.lower_bound(4);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(5);
+            assert(r == std::next(m.begin(), 0));
+            r = m.lower_bound(6);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(7);
+            assert(r == std::next(m.begin(), 3));
+            r = m.lower_bound(8);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(9);
+            assert(r == std::next(m.begin(), 6));
+            r = m.lower_bound(11);
+            assert(r == std::next(m.begin(), 9));
+        }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::multiset<V, std::less<>> M;
+
+    typedef M::iterator R;
+    V ar[] =
+    {
+        5,
+        5,
+        5,
+        7,
+        7,
+        7,
+        9,
+        9,
+        9
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+
+    R r = m.lower_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(5);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(11);
+    assert(r == std::next(m.begin(), 9));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::multiset<V, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+
+    R r = m.lower_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(5);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(11);
+    assert(r == std::next(m.begin(), 9));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/max_size.pass.cpp
new file mode 100644
index 0000000..5986df2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/max_size.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <set>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+      typedef limited_allocator<int, 10> A;
+      typedef std::multiset<int, std::less<int>, A> C;
+      C c;
+      assert(c.max_size() <= 10);
+      LIBCPP_ASSERT(c.max_size() == 10);
+    }
+    {
+      typedef limited_allocator<int, (size_t)-1> A;
+      typedef std::multiset<int, std::less<int>, A> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::multiset<char> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/merge.pass.cpp
new file mode 100644
index 0000000..3e99d88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/merge.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class multiset
+
+// template <class C2>
+//   void merge(set<Key, C2, Allocator>& source);
+// template <class C2>
+//   void merge(set<Key, C2, Allocator>&& source);
+// template <class C2>
+//   void merge(multiset<Key, C2, Allocator>& source);
+// template <class C2>
+//   void merge(multiset<Key, C2, Allocator>&& source);
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Set>
+bool set_equal(const Set& set, Set other)
+{
+    return set == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct throw_comparator
+{
+    bool& should_throw_;
+
+    throw_comparator(bool& should_throw) : should_throw_(should_throw) {}
+
+    template <class T>
+    bool operator()(const T& lhs, const T& rhs) const
+    {
+        if (should_throw_)
+            throw 0;
+        return lhs < rhs;
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::multiset<int> src{1, 3, 5};
+        std::multiset<int> dst{2, 4, 5};
+        dst.merge(src);
+        assert(set_equal(src, {}));
+        assert(set_equal(dst, {1, 2, 3, 4, 5, 5}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::multiset<Counter<int>, throw_comparator> set_type;
+        set_type src({1, 3, 5}, throw_comparator(do_throw));
+        set_type dst({2, 4, 5}, throw_comparator(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(set_equal(src, set_type({1, 3, 5}, throw_comparator(do_throw))));
+        assert(set_equal(dst, set_type({2, 4, 5}, throw_comparator(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct comparator
+    {
+        comparator() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs < rhs;
+        }
+    };
+    {
+        typedef std::multiset<Counter<int>, std::less<Counter<int>>> first_set_type;
+        typedef std::multiset<Counter<int>, comparator> second_set_type;
+        typedef std::set<Counter<int>, comparator> third_set_type;
+
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(set_equal(first, {1, 1, 2, 2, 3, 3, 3, 4}));
+            assert(set_equal(second, {}));
+            assert(set_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(set_equal(first, {1, 1, 2, 2, 3, 3, 3, 4}));
+            assert(set_equal(second, {}));
+            assert(set_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        std::multiset<int> first;
+        {
+            std::multiset<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::set<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/alloc.pass.cpp
new file mode 100644
index 0000000..8aa09ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/alloc.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset(const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::less<int> C;
+    typedef test_allocator<int> A;
+    std::multiset<int, C, A> m(A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A(5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..3c39455
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset& operator=(initializer_list<value_type> il);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multiset<int> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    }
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare.pass.cpp
new file mode 100644
index 0000000..6debbd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// explicit multiset(const key_compare& comp);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> C;
+    const std::multiset<int, C> m(C(3));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(3));
+    assert(m.value_comp() == C(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare_alloc.pass.cpp
new file mode 100644
index 0000000..61458e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare_alloc.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset(const value_compare& comp, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> C;
+    typedef test_allocator<int> A;
+    std::multiset<int, C, A> m(C(4), A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A(5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..ae987c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// Check that std::multiset fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <set>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs < rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::multiset<int, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy.pass.cpp
new file mode 100644
index 0000000..fc1a3f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset(const multiset& m);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::multiset<int, C, A> m = mo;
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 9);
+        assert(std::distance(mo.begin(), mo.end()) == 9);
+        assert(*std::next(mo.begin(), 0) == 1);
+        assert(*std::next(mo.begin(), 1) == 1);
+        assert(*std::next(mo.begin(), 2) == 1);
+        assert(*std::next(mo.begin(), 3) == 2);
+        assert(*std::next(mo.begin(), 4) == 2);
+        assert(*std::next(mo.begin(), 5) == 2);
+        assert(*std::next(mo.begin(), 6) == 3);
+        assert(*std::next(mo.begin(), 7) == 3);
+        assert(*std::next(mo.begin(), 8) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::multiset<int, C, A> m = mo;
+        assert(m.get_allocator() == A(-2));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 9);
+        assert(std::distance(mo.begin(), mo.end()) == 9);
+        assert(*std::next(mo.begin(), 0) == 1);
+        assert(*std::next(mo.begin(), 1) == 1);
+        assert(*std::next(mo.begin(), 2) == 1);
+        assert(*std::next(mo.begin(), 3) == 2);
+        assert(*std::next(mo.begin(), 4) == 2);
+        assert(*std::next(mo.begin(), 5) == 2);
+        assert(*std::next(mo.begin(), 6) == 3);
+        assert(*std::next(mo.begin(), 7) == 3);
+        assert(*std::next(mo.begin(), 8) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..9b6c3d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_alloc.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset(const multiset& m, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_less<int> C;
+    typedef test_allocator<V> A;
+    std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+    std::multiset<int, C, A> m(mo, A(3));
+    assert(m.get_allocator() == A(3));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*std::next(m.begin(), 0) == 1);
+    assert(*std::next(m.begin(), 1) == 1);
+    assert(*std::next(m.begin(), 2) == 1);
+    assert(*std::next(m.begin(), 3) == 2);
+    assert(*std::next(m.begin(), 4) == 2);
+    assert(*std::next(m.begin(), 5) == 2);
+    assert(*std::next(m.begin(), 6) == 3);
+    assert(*std::next(m.begin(), 7) == 3);
+    assert(*std::next(m.begin(), 8) == 3);
+
+    assert(mo.get_allocator() == A(7));
+    assert(mo.key_comp() == C(5));
+    assert(mo.size() == 9);
+    assert(std::distance(mo.begin(), mo.end()) == 9);
+    assert(*std::next(mo.begin(), 0) == 1);
+    assert(*std::next(mo.begin(), 1) == 1);
+    assert(*std::next(mo.begin(), 2) == 1);
+    assert(*std::next(mo.begin(), 3) == 2);
+    assert(*std::next(mo.begin(), 4) == 2);
+    assert(*std::next(mo.begin(), 5) == 2);
+    assert(*std::next(mo.begin(), 6) == 3);
+    assert(*std::next(mo.begin(), 7) == 3);
+    assert(*std::next(mo.begin(), 8) == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_assign.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_assign.addressof.compile.pass.cpp
new file mode 100644
index 0000000..c91493f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_assign.addressof.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset& operator=(const multiset& s);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::multiset<operator_hijacker> so;
+  std::multiset<operator_hijacker> s;
+  s = so;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp
new file mode 100644
index 0000000..5a048b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/copy_assign.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset& operator=(const multiset& s);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::multiset<int, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 9);
+        assert(std::distance(mo.begin(), mo.end()) == 9);
+        assert(*std::next(mo.begin(), 0) == 1);
+        assert(*std::next(mo.begin(), 1) == 1);
+        assert(*std::next(mo.begin(), 2) == 1);
+        assert(*std::next(mo.begin(), 3) == 2);
+        assert(*std::next(mo.begin(), 4) == 2);
+        assert(*std::next(mo.begin(), 5) == 2);
+        assert(*std::next(mo.begin(), 6) == 3);
+        assert(*std::next(mo.begin(), 7) == 3);
+        assert(*std::next(mo.begin(), 8) == 3);
+    }
+    {
+        typedef int V;
+        const V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        std::multiset<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::multiset<int> *p = &m;
+        m = *p;
+        assert(m.size() == 9);
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::multiset<int, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m.get_allocator() == A(2));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 9);
+        assert(std::distance(mo.begin(), mo.end()) == 9);
+        assert(*std::next(mo.begin(), 0) == 1);
+        assert(*std::next(mo.begin(), 1) == 1);
+        assert(*std::next(mo.begin(), 2) == 1);
+        assert(*std::next(mo.begin(), 3) == 2);
+        assert(*std::next(mo.begin(), 4) == 2);
+        assert(*std::next(mo.begin(), 5) == 2);
+        assert(*std::next(mo.begin(), 6) == 3);
+        assert(*std::next(mo.begin(), 7) == 3);
+        assert(*std::next(mo.begin(), 8) == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/deduct.fail.cpp
new file mode 100644
index 0000000..48412e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/deduct.fail.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// multiset(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> multiset<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>,
+//          class Allocator = allocator<Key>>
+// multiset(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> multiset<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// multiset(InputIterator, InputIterator, Allocator)
+//   -> multiset<iter-value-type<InputIterator>,
+//               less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// multiset(initializer_list<Key>, Allocator)
+//   -> multiset<Key, less<Key>, Allocator>;
+
+#include <functional>
+#include <set>
+#include <type_traits>
+
+struct NotAnAllocator {
+  friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
+};
+
+int main(int, char **) {
+  {
+    // cannot deduce Key from nothing
+    std::multiset s;
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}}
+  }
+  {
+    // cannot deduce Key from just (Compare)
+    std::multiset s(std::less<int>{});
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}}
+  }
+  {
+    // cannot deduce Key from just (Compare, Allocator)
+    std::multiset s(std::less<int>{}, std::allocator<int>{});
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}}
+  }
+  {
+    // cannot deduce Key from multiset(Allocator)
+    std::multiset s(std::allocator<int>{});
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}}
+  }
+  {
+    // since we have parens, not braces, this deliberately does not find the
+    // initializer_list constructor
+    NotAnAllocator a;
+    std::multiset s(a);
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'multiset'}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/deduct.pass.cpp
new file mode 100644
index 0000000..233ddd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/deduct.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// multiset(InputIterator, InputIterator,
+//          Compare = Compare(), Allocator = Allocator())
+//   -> multiset<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>,
+//          class Allocator = allocator<Key>>
+// multiset(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> multiset<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// multiset(InputIterator, InputIterator, Allocator)
+//   -> multiset<iter-value-type<InputIterator>,
+//               less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// multiset(initializer_list<Key>, Allocator)
+//   -> multiset<Key, less<Key>, Allocator>;
+
+#include <algorithm> // std::equal
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <set>
+#include <type_traits>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+struct NotAnAllocator {
+  friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
+};
+
+int main(int, char **) {
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::multiset s(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<int>);
+    const int expected_s[] = { 1, 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::multiset s(std::begin(arr), std::end(arr), std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<int, std::greater<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::multiset s(std::begin(arr), std::end(arr), std::greater<int>(),
+                    test_allocator<int>(0, 42));
+
+    ASSERT_SAME_TYPE(
+        decltype(s),
+        std::multiset<int, std::greater<int>, test_allocator<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 42);
+  }
+
+  {
+    std::multiset<long> source;
+    std::multiset s(source);
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<long>);
+    assert(s.size() == 0);
+  }
+
+  {
+    std::multiset<long> source;
+    std::multiset s{ source };  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<long>);
+    assert(s.size() == 0);
+  }
+
+  {
+    std::multiset<long> source;
+    std::multiset s(source, std::multiset<long>::allocator_type());
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<long>);
+    assert(s.size() == 0);
+  }
+
+  {
+    std::multiset s{ 1, 2, 1, INT_MAX, 3 };
+
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<int>);
+    const int expected_s[] = { 1, 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    std::multiset s({ 1, 2, 1, INT_MAX, 3 }, std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<int, std::greater<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    std::multiset s({ 1, 2, 1, INT_MAX, 3 }, std::greater<int>(),
+                    test_allocator<int>(0, 43));
+
+    ASSERT_SAME_TYPE(
+        decltype(s),
+        std::multiset<int, std::greater<int>, test_allocator<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 43);
+  }
+
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::multiset s(std::begin(arr), std::end(arr), test_allocator<int>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(s),
+                     std::multiset<int, std::less<int>, test_allocator<int> >);
+    const int expected_s[] = { 1, 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 44);
+  }
+
+  {
+    std::multiset s({ 1, 2, 1, INT_MAX, 3 }, test_allocator<int>(0, 45));
+
+    ASSERT_SAME_TYPE(decltype(s),
+                     std::multiset<int, std::less<int>, test_allocator<int> >);
+    const int expected_s[] = { 1, 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 45);
+  }
+
+  {
+    NotAnAllocator a;
+    std::multiset s{ a }; // multiset(initializer_list<NotAnAllocator>)
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<NotAnAllocator>);
+    assert(s.size() == 1);
+  }
+
+  {
+    std::multiset<long> source;
+    std::multiset s{ source, source }; // multiset(initializer_list<multiset<long>>)
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<std::multiset<long> >);
+    assert(s.size() == 2);
+  }
+
+  {
+    NotAnAllocator a;
+    std::multiset s{ a, a }; // multiset(initializer_list<NotAnAllocator>)
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<NotAnAllocator>);
+    assert(s.size() == 2);
+  }
+
+  {
+    int source[3] = { 3, 4, 5 };
+    std::multiset s(source, source + 3); // multiset(InputIterator, InputIterator)
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<int>);
+    assert(s.size() == 3);
+  }
+
+  {
+    int source[3] = { 3, 4, 5 };
+    std::multiset s{ source, source + 3 }; // multiset(initializer_list<int*>)
+    ASSERT_SAME_TYPE(decltype(s), std::multiset<int *>);
+    assert(s.size() == 2);
+  }
+
+  AssociativeContainerDeductionGuidesSfinaeAway<std::multiset, std::multiset<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/default.pass.cpp
new file mode 100644
index 0000000..793c0f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// multiset();
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::multiset<int> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::multiset<int, std::less<int>, min_allocator<int>> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+    {
+    typedef explicit_allocator<int> A;
+        {
+        std::multiset<int, std::less<int>, A> m;
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+        {
+        A a;
+        std::multiset<int, std::less<int>, A> m(a);
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+    }
+    {
+    std::multiset<int> m = {};
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..b6d1cb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/default_noexcept.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// multiset()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..a9f7a64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// ~multiset() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..fa4a85e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset(initializer_list<value_type> il, const key_compare& comp = key_compare());
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multiset<int> C;
+    typedef C::value_type V;
+    C m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    }
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> C;
+    typedef C::value_type V;
+    C m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    }
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> C;
+    typedef C::value_type V;
+    min_allocator<int> a;
+    C m ({1, 2, 3, 4, 5, 6}, a);
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(m.get_allocator() == a);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list_compare.pass.cpp
new file mode 100644
index 0000000..5ff3200
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list_compare.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset(initializer_list<value_type> il, const key_compare& comp = key_compare());
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> Cmp;
+    typedef std::multiset<int, Cmp> C;
+    typedef C::value_type V;
+    C m({1, 2, 3, 4, 5, 6}, Cmp(10));
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(m.key_comp() == Cmp(10));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list_compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list_compare_alloc.pass.cpp
new file mode 100644
index 0000000..9c69495
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/initializer_list_compare_alloc.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset(initializer_list<value_type> il, const key_compare& comp, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> Cmp;
+    typedef test_allocator<int> A;
+    typedef std::multiset<int, Cmp, A> C;
+    typedef C::value_type V;
+    C m({1, 2, 3, 4, 5, 6}, Cmp(10), A(4));
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(m.key_comp() == Cmp(10));
+    assert(m.get_allocator() == A(4));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter.pass.cpp
new file mode 100644
index 0000000..df28a27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// template <class InputIterator>
+//     multiset(InputIterator first, InputIterator last);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    std::multiset<V> m(cpp17_input_iterator<const int*>(ar),
+                  cpp17_input_iterator<const int*>(ar+sizeof(ar)/sizeof(ar[0])));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*std::next(m.begin(), 0) == 1);
+    assert(*std::next(m.begin(), 1) == 1);
+    assert(*std::next(m.begin(), 2) == 1);
+    assert(*std::next(m.begin(), 3) == 2);
+    assert(*std::next(m.begin(), 4) == 2);
+    assert(*std::next(m.begin(), 5) == 2);
+    assert(*std::next(m.begin(), 6) == 3);
+    assert(*std::next(m.begin(), 7) == 3);
+    assert(*std::next(m.begin(), 8) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    std::multiset<V, std::less<V>, min_allocator<V>> m(cpp17_input_iterator<const int*>(ar),
+                  cpp17_input_iterator<const int*>(ar+sizeof(ar)/sizeof(ar[0])));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*std::next(m.begin(), 0) == 1);
+    assert(*std::next(m.begin(), 1) == 1);
+    assert(*std::next(m.begin(), 2) == 1);
+    assert(*std::next(m.begin(), 3) == 2);
+    assert(*std::next(m.begin(), 4) == 2);
+    assert(*std::next(m.begin(), 5) == 2);
+    assert(*std::next(m.begin(), 6) == 3);
+    assert(*std::next(m.begin(), 7) == 3);
+    assert(*std::next(m.begin(), 8) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..dcc7e0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter_alloc.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// template <class InputIterator>
+//     multiset(InputIterator first, InputIterator last,
+//         const value_compare& comp, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_less<V> C;
+    typedef test_allocator<V> A;
+    std::multiset<V, C, A> m(cpp17_input_iterator<const V*>(ar),
+                        cpp17_input_iterator<const V*>(ar+sizeof(ar)/sizeof(ar[0])),
+                        C(5), A(7));
+    assert(m.value_comp() == C(5));
+    assert(m.get_allocator() == A(7));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*std::next(m.begin(), 0) == 1);
+    assert(*std::next(m.begin(), 1) == 1);
+    assert(*std::next(m.begin(), 2) == 1);
+    assert(*std::next(m.begin(), 3) == 2);
+    assert(*std::next(m.begin(), 4) == 2);
+    assert(*std::next(m.begin(), 5) == 2);
+    assert(*std::next(m.begin(), 6) == 3);
+    assert(*std::next(m.begin(), 7) == 3);
+    assert(*std::next(m.begin(), 8) == 3);
+    }
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_allocator<V> A;
+    typedef test_less<int> C;
+    A a;
+    std::multiset<V, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), a);
+
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*std::next(m.begin(), 0) == 1);
+    assert(*std::next(m.begin(), 1) == 1);
+    assert(*std::next(m.begin(), 2) == 1);
+    assert(*std::next(m.begin(), 3) == 2);
+    assert(*std::next(m.begin(), 4) == 2);
+    assert(*std::next(m.begin(), 5) == 2);
+    assert(*std::next(m.begin(), 6) == 3);
+    assert(*std::next(m.begin(), 7) == 3);
+    assert(*std::next(m.begin(), 8) == 3);
+    assert(m.get_allocator() == a);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter_comp.pass.cpp
new file mode 100644
index 0000000..b0527f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/iter_iter_comp.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// template <class InputIterator>
+//     multiset(InputIterator first, InputIterator last, const value_compare& comp);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_less<V> C;
+    std::multiset<V, C> m(cpp17_input_iterator<const V*>(ar),
+                     cpp17_input_iterator<const V*>(ar+sizeof(ar)/sizeof(ar[0])), C(5));
+    assert(m.value_comp() == C(5));
+    assert(m.size() == 9);
+    assert(std::distance(m.begin(), m.end()) == 9);
+    assert(*std::next(m.begin(), 0) == 1);
+    assert(*std::next(m.begin(), 1) == 1);
+    assert(*std::next(m.begin(), 2) == 1);
+    assert(*std::next(m.begin(), 3) == 2);
+    assert(*std::next(m.begin(), 4) == 2);
+    assert(*std::next(m.begin(), 5) == 2);
+    assert(*std::next(m.begin(), 6) == 3);
+    assert(*std::next(m.begin(), 7) == 3);
+    assert(*std::next(m.begin(), 8) == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move.pass.cpp
new file mode 100644
index 0000000..9b265b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset(multiset&& s);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multiset<int, C, A> mo(C(5), A(7));
+        std::multiset<int, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 0);
+        assert(std::distance(m.begin(), m.end()) == 0);
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::multiset<int, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::multiset<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::multiset<int, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 9);
+        assert(std::distance(m.begin(), m.end()) == 9);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 1);
+        assert(*std::next(m.begin(), 2) == 1);
+        assert(*std::next(m.begin(), 3) == 2);
+        assert(*std::next(m.begin(), 4) == 2);
+        assert(*std::next(m.begin(), 5) == 2);
+        assert(*std::next(m.begin(), 6) == 3);
+        assert(*std::next(m.begin(), 7) == 3);
+        assert(*std::next(m.begin(), 8) == 3);
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..d279dba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_alloc.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset(multiset&& s, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "Counter.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(7));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef Counter<int> V;
+        typedef std::less<V> C;
+        typedef test_allocator<V> A;
+        typedef std::multiset<V, C, A> M;
+        typedef V* I;
+        Counter_base::gConstructed = 0;
+        {
+            V a1[] =
+            {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+            };
+            const size_t num = sizeof(a1)/sizeof(a1[0]);
+            assert(Counter_base::gConstructed == num);
+
+            M m1(I(a1), I(a1+num), C(), A());
+            assert(Counter_base::gConstructed == 2*num);
+
+            M m2(m1);
+            assert(m2 == m1);
+            assert(Counter_base::gConstructed == 3*num);
+
+            M m3(std::move(m1), A());
+            assert(m3 == m2);
+            LIBCPP_ASSERT(m1.empty());
+            assert(Counter_base::gConstructed >= (int)(3*num));
+            assert(Counter_base::gConstructed <= (int)(4*num));
+
+            {
+            M m4(std::move(m2), A(5));
+            assert(Counter_base::gConstructed >= (int)(3*num));
+            assert(Counter_base::gConstructed <= (int)(5*num));
+            assert(m4 == m3);
+            LIBCPP_ASSERT(m2.empty());
+            }
+            assert(Counter_base::gConstructed >= (int)(2*num));
+            assert(Counter_base::gConstructed <= (int)(4*num));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..c57a56c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_assign.pass.cpp
@@ -0,0 +1,186 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class multiset
+
+// multiset& operator=(multiset&& s);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(7));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef min_allocator<V> A;
+        typedef std::multiset<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A());
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A());
+        M m3(C(3), A());
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A());
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..a94b5b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// multiset& operator=(multiset&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..4bf7068
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.cons/move_noexcept.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// multiset(multiset&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..f397975
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.erasure/erase_if.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <set>
+
+// template <class T, class Compare, class Allocator, class Predicate>
+//   typename multiset<T, Compare, Allocator>::size_type
+//   erase_if(multiset<T, Compare, Allocator>& c, Predicate pred);
+
+#include <set>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == expected);
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(), is1, S(), 0);
+
+    test0(S({1}), is1, S(), 1);
+    test0(S({1}), is2, S({1}), 0);
+
+    test0(S({1, 2}), is1, S({2}), 1);
+    test0(S({1, 2}), is2, S({1}), 1);
+    test0(S({1, 2}), is3, S({1, 2}), 0);
+    test0(S({1, 1}), is1, S(), 2);
+    test0(S({1, 1}), is3, S({1, 1}), 0);
+
+    test0(S({1, 2, 3}), is1, S({2, 3}), 1);
+    test0(S({1, 2, 3}), is2, S({1, 3}), 1);
+    test0(S({1, 2, 3}), is3, S({1, 2}), 1);
+    test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
+
+    test0(S({1, 1, 1}), is1, S(), 3);
+    test0(S({1, 1, 1}), is2, S({1, 1, 1}), 0);
+    test0(S({1, 1, 2}), is1, S({2}), 2);
+    test0(S({1, 1, 2}), is2, S({1, 1}), 1);
+    test0(S({1, 1, 2}), is3, S({1, 1, 2}), 0);
+    test0(S({1, 2, 2}), is1, S({2, 2}), 1);
+    test0(S({1, 2, 2}), is2, S({1}), 2);
+    test0(S({1, 2, 2}), is3, S({1, 2, 2}), 0);
+
+    test0(S({1, 2, 3}), True, S(), 3);
+    test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::multiset<int>>();
+    test<std::multiset<int, std::less<int>, min_allocator<int>>> ();
+    test<std::multiset<int, std::less<int>, test_allocator<int>>> ();
+
+    test<std::multiset<long>>();
+    test<std::multiset<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.nonmember/op_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.nonmember/op_compare.pass.cpp
new file mode 100644
index 0000000..a8011f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.nonmember/op_compare.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// template<class Key, class Compare, class Alloc>
+// bool operator==(const std::multiset<Key, Compare, Alloc>& lhs,
+//                 const std::multiset<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator!=(const std::multiset<Key, Compare, Alloc>& lhs,
+//                 const std::multiset<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator<(const std::multiset<Key, Compare, Alloc>& lhs,
+//                const std::multiset<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator>(const std::multiset<Key, Compare, Alloc>& lhs,
+//                const std::multiset<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator<=(const std::multiset<Key, Compare, Alloc>& lhs,
+//                 const std::multiset<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator>=(const std::multiset<Key, Compare, Alloc>& lhs,
+//                 const std::multiset<Key, Compare, Alloc>& rhs);
+
+#include <set>
+#include <cassert>
+#include <string>
+
+#include "test_comparisons.h"
+
+int main(int, char**) {
+    {
+        std::multiset<int> s1, s2;
+        s1.insert(1);
+        s2.insert(2);
+        const std::multiset<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, false, true));
+    }
+    {
+        std::multiset<int> s1, s2;
+        s1.insert(1);
+        s2.insert(1);
+        const std::multiset<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, true, false));
+    }
+    {
+        std::multiset<int> s1, s2;
+        s1.insert(1);
+        s2.insert(1);
+        s2.insert(2);
+        const std::multiset<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, false, true));
+    }
+    {
+        std::multiset<int> s1, s2;
+        s1.insert(1);
+        s2.insert(1);
+        s2.insert(1);
+        s2.insert(1);
+        const std::multiset<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, false, true));
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.observers/comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.observers/comp.pass.cpp
new file mode 100644
index 0000000..ad2a304
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.observers/comp.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// key_compare key_comp() const;
+// value_compare value_comp() const;
+
+#include <set>
+#include <cassert>
+
+int main(int, char**) {
+    typedef std::multiset<int> set_type;
+
+    set_type s;
+    set_type::iterator i1 = s.insert(1);
+    set_type::iterator i2 = s.insert(2);
+
+    const set_type& cs = s;
+
+    assert(cs.key_comp()(*i1, *i2));
+    assert(!cs.key_comp()(*i2, *i1));
+
+    assert(cs.value_comp()(*i1, *i2));
+    assert(!cs.value_comp()(*i2, *i1));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/member_swap.pass.cpp
new file mode 100644
index 0000000..7e7b097
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/member_swap.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// void swap(multiset& m);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::multiset<int> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/non_member_swap.pass.cpp
new file mode 100644
index 0000000..e77a3b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/non_member_swap.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// void swap(multiset& m);
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef int V;
+    {
+    typedef std::multiset<int> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+    {
+        typedef test_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::set<int, C, A> M;
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1, 1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(1, 2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator().get_id() == 1);
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef other_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::set<int, C, A> M;
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator() == A(2));
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator() == A(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..467be8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/multiset.special/swap_noexcept.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// void swap(multiset& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//              noexcept(swap(declval<Compare&>(), declval<Compare&>())));
+
+// This tests a conforming extension
+
+#include <set>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::multiset<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for comp
+    typedef std::multiset<MoveOnly, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for comp
+    typedef std::multiset<MoveOnly, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for comp
+    typedef std::multiset<MoveOnly, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for comp
+    typedef std::multiset<MoveOnly, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for comp
+    typedef std::multiset<MoveOnly, some_comp2<MoveOnly>, some_alloc3<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..a938b53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// multiset
+
+#include <set>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::multiset<int>;
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(!std::ranges::random_access_range<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(!std::ranges::random_access_range<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/scary.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/scary.pass.cpp
new file mode 100644
index 0000000..fc4efd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/scary.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set class multiset
+
+// Extension:  SCARY/N2913 iterator compatibility between set and multiset
+
+#include <set>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::set<int> M1;
+    typedef std::multiset<int> M2;
+    M2::iterator i;
+    M1::iterator j = i;
+    ((void)j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/size.pass.cpp
new file mode 100644
index 0000000..d035025
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/size.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+// size_type size() const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multiset<int> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(2));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(2));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/types.pass.cpp
new file mode 100644
index 0000000..a6d0dd5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/types.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// template <class Key, class Compare = less<Key>,
+//           class Allocator = allocator<Key>>
+// class multiset
+// {
+// public:
+//     // types:
+//     typedef Key                                      key_type;
+//     typedef key_type                                 value_type;
+//     typedef Compare                                  key_compare;
+//     typedef key_compare                              value_compare;
+//     typedef Allocator                                allocator_type;
+//     typedef typename allocator_type::reference       reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     ...
+// };
+
+#include <set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::multiset<int> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::value_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, std::allocator<int> >::value), "");
+    static_assert((std::is_same<C::reference, int&>::value), "");
+    static_assert((std::is_same<C::const_reference, const int&>::value), "");
+    static_assert((std::is_same<C::pointer, int*>::value), "");
+    static_assert((std::is_same<C::const_pointer, const int*>::value), "");
+    static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::value_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<int>>::value), "");
+    static_assert((std::is_same<C::reference, int&>::value), "");
+    static_assert((std::is_same<C::const_reference, const int&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<int>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const int>>::value), "");
+//  min_allocator doesn't have a size_type, so one gets synthesized
+    static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/upper_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/upper_bound.pass.cpp
new file mode 100644
index 0000000..05ac595
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/multiset/upper_bound.pass.cpp
@@ -0,0 +1,224 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class multiset
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::multiset<int> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 9));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 9));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::multiset<int, std::less<int>, min_allocator<int>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 9));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            5,
+            5,
+            7,
+            7,
+            7,
+            9,
+            9,
+            9
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 9));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 9));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::multiset<V, std::less<>> M;
+
+    typedef M::iterator R;
+    V ar[] =
+    {
+        5,
+        5,
+        5,
+        7,
+        7,
+        7,
+        9,
+        9,
+        9
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.upper_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 9));
+    r = m.upper_bound(11);
+    assert(r == std::next(m.begin(), 9));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::multiset<V, std::less<>> M;
+
+    typedef M::iterator R;
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 9 ));
+
+    R r = m.upper_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 9));
+    r = m.upper_bound(11);
+    assert(r == std::next(m.begin(), 9));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..69e4935
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+//   The container's value type must be the same as the allocator's value type
+
+#include <set>
+
+int main(int, char**)
+{
+    std::set<int, std::less<int>, std::allocator<long> > s;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/clear.pass.cpp
new file mode 100644
index 0000000..0650e91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/clear.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// void clear() noexcept;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<int> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        ASSERT_NOEXCEPT(m.clear());
+        m.clear();
+        assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/contains.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/contains.pass.cpp
new file mode 100644
index 0000000..d595e38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/contains.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <set>
+
+// <set>
+
+// bool contains(const key_type& x) const;
+
+template <typename T, typename V, typename B, typename... Vals>
+void test(B bad, Vals... args) {
+    T set;
+    V vals[] = {args...};
+
+    for (auto& v : vals) set.insert(v);
+    for (auto& v : vals) assert(set.contains(v));
+
+    assert(!set.contains(bad));
+}
+
+struct E { int a = 1; double b = 1; char c = 1; };
+
+int main(int, char**)
+{
+    {
+        test<std::set<int>, int>(14, 10, 11, 12, 13);
+        test<std::set<char>, char>('e', 'a', 'b', 'c', 'd');
+    }
+    {
+        test<std::multiset<int>, int>(14, 10, 11, 12, 13);
+        test<std::multiset<char>, char>('e', 'a', 'b', 'c', 'd');
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/contains_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/contains_transparent.pass.cpp
new file mode 100644
index 0000000..e4caa0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/contains_transparent.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <set>
+
+// class set
+
+// template<typename K> bool contains(const K& x) const; // C++20
+
+#include <cassert>
+#include <set>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int>& lhs,
+                  const std::pair<int, int>& rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int>& lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int>& rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+template <typename Container>
+void test() {
+  Container s{{2, 1}, {1, 2}, {1, 3}, {1, 4}, {2, 2}};
+
+  assert(s.contains(1));
+  assert(!s.contains(-1));
+}
+
+int main(int, char**) {
+  test<std::set<std::pair<int, int>, Comp> >();
+  test<std::multiset<std::pair<int, int>, Comp> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/count.pass.cpp
new file mode 100644
index 0000000..06ddf78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/count.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// size_type count(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        typedef std::set<int> M;
+        typedef M::size_type R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(5);
+        assert(r == 1);
+        r = m.count(6);
+        assert(r == 1);
+        r = m.count(7);
+        assert(r == 1);
+        r = m.count(8);
+        assert(r == 1);
+        r = m.count(9);
+        assert(r == 1);
+        r = m.count(10);
+        assert(r == 1);
+        r = m.count(11);
+        assert(r == 1);
+        r = m.count(12);
+        assert(r == 1);
+        r = m.count(4);
+        assert(r == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef M::size_type R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(5);
+        assert(r == 1);
+        r = m.count(6);
+        assert(r == 1);
+        r = m.count(7);
+        assert(r == 1);
+        r = m.count(8);
+        assert(r == 1);
+        r = m.count(9);
+        assert(r == 1);
+        r = m.count(10);
+        assert(r == 1);
+        r = m.count(11);
+        assert(r == 1);
+        r = m.count(12);
+        assert(r == 1);
+        r = m.count(4);
+        assert(r == 0);
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+        typedef int V;
+        typedef std::set<int, std::less<>> M;
+        typedef M::size_type R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.count(5);
+        assert(r == 1);
+        r = m.count(6);
+        assert(r == 1);
+        r = m.count(7);
+        assert(r == 1);
+        r = m.count(8);
+        assert(r == 1);
+        r = m.count(9);
+        assert(r == 1);
+        r = m.count(10);
+        assert(r == 1);
+        r = m.count(11);
+        assert(r == 1);
+        r = m.count(12);
+        assert(r == 1);
+        r = m.count(4);
+        assert(r == 0);
+    }
+    {
+    typedef PrivateConstructor V;
+    typedef std::set<V, std::less<>> M;
+        typedef M::size_type R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 6 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 8 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 10 ));
+    m.insert ( V::make ( 11 ));
+    m.insert ( V::make ( 12 ));
+
+    const M& mc = m;
+
+    R r = mc.count(5);
+    assert(r == 1);
+    r = mc.count(6);
+    assert(r == 1);
+    r = mc.count(7);
+    assert(r == 1);
+    r = mc.count(8);
+    assert(r == 1);
+    r = mc.count(9);
+    assert(r == 1);
+    r = mc.count(10);
+    assert(r == 1);
+    r = mc.count(11);
+    assert(r == 1);
+    r = mc.count(12);
+    assert(r == 1);
+    r = mc.count(4);
+    assert(r == 0);
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/count_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/count_transparent.pass.cpp
new file mode 100644
index 0000000..3cb7e5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/count_transparent.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <set>
+
+// class set
+
+//    template<typename K>
+//        size_type count(const K& x) const;        // C++14
+
+#include <cassert>
+#include <set>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::set<std::pair<int, int>, Comp> s{{2, 1}, {1, 2}, {1, 3}, {1, 4}, {2, 2}};
+
+  auto cnt = s.count(1);
+  assert(cnt == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/emplace.pass.cpp
new file mode 100644
index 0000000..f2f302c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/emplace.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// template <class... Args>
+//   pair<iterator, bool> emplace(Args&&... args);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<DefaultOnly> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace();
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+
+        r = m.emplace();
+        assert(!r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::set<Emplaceable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace();
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == Emplaceable());
+        r = m.emplace(2, 3.5);
+        assert(r.second);
+        assert(r.first == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r.first == Emplaceable(2, 3.5));
+        r = m.emplace(2, 3.5);
+        assert(!r.second);
+        assert(r.first == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r.first == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::set<int> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(M::value_type(2));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*r.first == 2);
+    }
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.emplace(M::value_type(2));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*r.first == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/emplace_hint.pass.cpp
new file mode 100644
index 0000000..a7d6857
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/emplace_hint.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// template <class... Args>
+//   iterator emplace_hint(const_iterator position, Args&&... args);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<DefaultOnly> M;
+        typedef M::iterator R;
+        M m;
+        assert(DefaultOnly::count == 0);
+        R r = m.emplace_hint(m.cend());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+
+        r = m.emplace_hint(m.cbegin());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == DefaultOnly());
+        assert(DefaultOnly::count == 1);
+    }
+    assert(DefaultOnly::count == 0);
+    {
+        typedef std::set<Emplaceable> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend());
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*m.begin() == Emplaceable());
+        r = m.emplace_hint(m.cend(), 2, 3.5);
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r == Emplaceable(2, 3.5));
+        r = m.emplace_hint(m.cbegin(), 2, 3.5);
+        assert(r == std::next(m.begin()));
+        assert(m.size() == 2);
+        assert(*r == Emplaceable(2, 3.5));
+    }
+    {
+        typedef std::set<int> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+    }
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.emplace_hint(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/empty.pass.cpp
new file mode 100644
index 0000000..8bf1e12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/empty.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// bool empty() const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::set<int> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    M m;
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/empty.verify.cpp
new file mode 100644
index 0000000..0e7b28d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <set>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::set<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/equal_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/equal_range.pass.cpp
new file mode 100644
index 0000000..c0602ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/equal_range.pass.cpp
@@ -0,0 +1,372 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// pair<iterator,iterator>             equal_range(const key_type& k);
+// pair<const_iterator,const_iterator> equal_range(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::set<int> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+    }
+    {
+        typedef std::pair<M::const_iterator, M::const_iterator> R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+    V ar[] =
+    {
+        5,
+        7,
+        9,
+        11,
+        13,
+        15,
+        17,
+        19
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.equal_range(5);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(7);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(9);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(11);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(13);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(15);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(17);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(19);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 8));
+    r = m.equal_range(4);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(6);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(8);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(10);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(12);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(14);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(16);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(18);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(20);
+    assert(r.first == std::next(m.begin(), 8));
+    assert(r.second == std::next(m.begin(), 8));
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::set<V, std::less<>> M;
+    {
+        typedef std::pair<M::iterator, M::iterator> R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.equal_range(5);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(7);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(9);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(11);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(13);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(15);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(17);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(19);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 8));
+        r = m.equal_range(4);
+        assert(r.first == std::next(m.begin(), 0));
+        assert(r.second == std::next(m.begin(), 0));
+        r = m.equal_range(6);
+        assert(r.first == std::next(m.begin(), 1));
+        assert(r.second == std::next(m.begin(), 1));
+        r = m.equal_range(8);
+        assert(r.first == std::next(m.begin(), 2));
+        assert(r.second == std::next(m.begin(), 2));
+        r = m.equal_range(10);
+        assert(r.first == std::next(m.begin(), 3));
+        assert(r.second == std::next(m.begin(), 3));
+        r = m.equal_range(12);
+        assert(r.first == std::next(m.begin(), 4));
+        assert(r.second == std::next(m.begin(), 4));
+        r = m.equal_range(14);
+        assert(r.first == std::next(m.begin(), 5));
+        assert(r.second == std::next(m.begin(), 5));
+        r = m.equal_range(16);
+        assert(r.first == std::next(m.begin(), 6));
+        assert(r.second == std::next(m.begin(), 6));
+        r = m.equal_range(18);
+        assert(r.first == std::next(m.begin(), 7));
+        assert(r.second == std::next(m.begin(), 7));
+        r = m.equal_range(20);
+        assert(r.first == std::next(m.begin(), 8));
+        assert(r.second == std::next(m.begin(), 8));
+        }
+    }
+    {
+    typedef PrivateConstructor V;
+    typedef std::set<V, std::less<>> M;
+    typedef std::pair<M::iterator, M::iterator> R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 11 ));
+    m.insert ( V::make ( 13 ));
+    m.insert ( V::make ( 15 ));
+    m.insert ( V::make ( 17 ));
+    m.insert ( V::make ( 19 ));
+
+    R r = m.equal_range(5);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(7);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(9);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(11);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(13);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(15);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(17);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(19);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 8));
+    r = m.equal_range(4);
+    assert(r.first == std::next(m.begin(), 0));
+    assert(r.second == std::next(m.begin(), 0));
+    r = m.equal_range(6);
+    assert(r.first == std::next(m.begin(), 1));
+    assert(r.second == std::next(m.begin(), 1));
+    r = m.equal_range(8);
+    assert(r.first == std::next(m.begin(), 2));
+    assert(r.second == std::next(m.begin(), 2));
+    r = m.equal_range(10);
+    assert(r.first == std::next(m.begin(), 3));
+    assert(r.second == std::next(m.begin(), 3));
+    r = m.equal_range(12);
+    assert(r.first == std::next(m.begin(), 4));
+    assert(r.second == std::next(m.begin(), 4));
+    r = m.equal_range(14);
+    assert(r.first == std::next(m.begin(), 5));
+    assert(r.second == std::next(m.begin(), 5));
+    r = m.equal_range(16);
+    assert(r.first == std::next(m.begin(), 6));
+    assert(r.second == std::next(m.begin(), 6));
+    r = m.equal_range(18);
+    assert(r.first == std::next(m.begin(), 7));
+    assert(r.second == std::next(m.begin(), 7));
+    r = m.equal_range(20);
+    assert(r.first == std::next(m.begin(), 8));
+    assert(r.second == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/equal_range_transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/equal_range_transparent.pass.cpp
new file mode 100644
index 0000000..e4b7833
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/equal_range_transparent.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <set>
+
+// class set
+
+// template<typename K>
+//     pair<iterator,iterator>             equal_range(const K& x);        //
+//     C++14
+// template<typename K>
+//     pair<const_iterator,const_iterator> equal_range(const K& x) const;  //
+//     C++14
+
+#include <cassert>
+#include <set>
+#include <utility>
+
+struct Comp {
+  using is_transparent = void;
+
+  bool operator()(const std::pair<int, int> &lhs,
+                  const std::pair<int, int> &rhs) const {
+    return lhs < rhs;
+  }
+
+  bool operator()(const std::pair<int, int> &lhs, int rhs) const {
+    return lhs.first < rhs;
+  }
+
+  bool operator()(int lhs, const std::pair<int, int> &rhs) const {
+    return lhs < rhs.first;
+  }
+};
+
+int main(int, char**) {
+  std::set<std::pair<int, int>, Comp> s{{2, 1}, {1, 2}, {1, 3}, {1, 4}, {2, 2}};
+
+  auto er = s.equal_range(1);
+  long nels = 0;
+
+  for (auto it = er.first; it != er.second; it++) {
+    assert(it->first == 1);
+    nels++;
+  }
+
+  assert(nels == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_iter.pass.cpp
new file mode 100644
index 0000000..9d9fa18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_iter.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// iterator erase(const_iterator position);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator<(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+
+int main(int, char**)
+{
+    {
+        typedef std::set<int> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 5);
+        assert(i == m.end());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin()));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 6);
+        assert(*std::next(m.begin(), 3) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 1);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 3));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 6);
+        assert(i == m.begin());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 5));
+        assert(m.size() == 5);
+        assert(i == m.end());
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 1));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin()));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 6);
+        assert(*std::next(m.begin(), 3) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 3);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+
+        i = m.erase(std::next(m.cbegin(), 0));
+        assert(m.size() == 1);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 5);
+
+        i = m.erase(m.cbegin());
+        assert(m.size() == 0);
+        assert(i == m.begin());
+        assert(i == m.end());
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::set<T> C;
+        typedef C::iterator I;
+
+        C c;
+        T a{0};
+        I it = c.find(a);
+        if (it != c.end())
+            c.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..8508e17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_iter_iter.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<int> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 5), std::next(m.cbegin(), 5));
+        assert(m.size() == 8);
+        assert(i == std::next(m.begin(), 5));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 4);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 6);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 3), std::next(m.cbegin(), 4));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 5));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 7);
+        assert(*std::next(m.begin(), 3) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0), std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 7);
+        assert(*std::next(m.begin(), 1) == 8);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        typedef M::iterator I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(std::next(m.cbegin(), 5), std::next(m.cbegin(), 5));
+        assert(m.size() == 8);
+        assert(i == std::next(m.begin(), 5));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 4);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 6);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 3), std::next(m.cbegin(), 4));
+        assert(m.size() == 7);
+        assert(i == std::next(m.begin(), 3));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 2), std::next(m.cbegin(), 5));
+        assert(m.size() == 4);
+        assert(i == std::next(m.begin(), 2));
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 7);
+        assert(*std::next(m.begin(), 3) == 8);
+
+        i = m.erase(std::next(m.cbegin(), 0), std::next(m.cbegin(), 2));
+        assert(m.size() == 2);
+        assert(i == std::next(m.begin(), 0));
+        assert(*std::next(m.begin(), 0) == 7);
+        assert(*std::next(m.begin(), 1) == 8);
+
+        i = m.erase(m.cbegin(), m.cend());
+        assert(m.size() == 0);
+        assert(i == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_key.pass.cpp
new file mode 100644
index 0000000..03b78eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/erase_key.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// size_type erase(const key_type& k);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<int> M;
+        typedef int V;
+        typedef M::size_type I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(9);
+        assert(m.size() == 8);
+        assert(i == 0);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 4);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 6);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 8);
+
+        i = m.erase(4);
+        assert(m.size() == 7);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(1);
+        assert(m.size() == 6);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 8);
+
+        i = m.erase(8);
+        assert(m.size() == 5);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+
+        i = m.erase(3);
+        assert(m.size() == 4);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 6);
+        assert(*std::next(m.begin(), 3) == 7);
+
+        i = m.erase(6);
+        assert(m.size() == 3);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(7);
+        assert(m.size() == 2);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+
+        i = m.erase(2);
+        assert(m.size() == 1);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 5);
+
+        i = m.erase(5);
+        assert(m.size() == 0);
+        assert(i == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        typedef M::size_type I;
+        V ar[] =
+        {
+            1,
+            2,
+            3,
+            4,
+            5,
+            6,
+            7,
+            8
+        };
+        M m(ar, ar + sizeof(ar)/sizeof(ar[0]));
+        assert(m.size() == 8);
+        I i = m.erase(9);
+        assert(m.size() == 8);
+        assert(i == 0);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 4);
+        assert(*std::next(m.begin(), 4) == 5);
+        assert(*std::next(m.begin(), 5) == 6);
+        assert(*std::next(m.begin(), 6) == 7);
+        assert(*std::next(m.begin(), 7) == 8);
+
+        i = m.erase(4);
+        assert(m.size() == 7);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 1);
+        assert(*std::next(m.begin(), 1) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+        assert(*std::next(m.begin(), 3) == 5);
+        assert(*std::next(m.begin(), 4) == 6);
+        assert(*std::next(m.begin(), 5) == 7);
+        assert(*std::next(m.begin(), 6) == 8);
+
+        i = m.erase(1);
+        assert(m.size() == 6);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+        assert(*std::next(m.begin(), 5) == 8);
+
+        i = m.erase(8);
+        assert(m.size() == 5);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 3);
+        assert(*std::next(m.begin(), 2) == 5);
+        assert(*std::next(m.begin(), 3) == 6);
+        assert(*std::next(m.begin(), 4) == 7);
+
+        i = m.erase(3);
+        assert(m.size() == 4);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 6);
+        assert(*std::next(m.begin(), 3) == 7);
+
+        i = m.erase(6);
+        assert(m.size() == 3);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+        assert(*std::next(m.begin(), 2) == 7);
+
+        i = m.erase(7);
+        assert(m.size() == 2);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 2);
+        assert(*std::next(m.begin(), 1) == 5);
+
+        i = m.erase(2);
+        assert(m.size() == 1);
+        assert(i == 1);
+        assert(*std::next(m.begin(), 0) == 5);
+
+        i = m.erase(5);
+        assert(m.size() == 0);
+        assert(i == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/extract_iterator.pass.cpp
new file mode 100644
index 0000000..91b97fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/extract_iterator.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class set
+
+// node_type extract(const_iterator);
+
+#include <set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = *first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.value() == key_value);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using set_type = std::set<int>;
+        set_type m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+    {
+        std::set<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        assert(Counter_base::gConstructed == 6);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::set<int, std::less<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/extract_key.pass.cpp
new file mode 100644
index 0000000..90ebbb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/extract_key.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class set
+
+// node_type extract(key_type const&);
+
+#include <set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.value() == *copy);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::set<int> m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::set<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 6+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::set<int, std::less<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/find.pass.cpp
new file mode 100644
index 0000000..081ff94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/find.pass.cpp
@@ -0,0 +1,242 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+//       iterator find(const key_type& k);
+// const_iterator find(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::set<int> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.find(5);
+        assert(r == m.begin());
+        r = m.find(6);
+        assert(r == std::next(m.begin()));
+        r = m.find(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.find(8);
+        assert(r == std::next(m.begin(), 3));
+        r = m.find(9);
+        assert(r == std::next(m.begin(), 4));
+        r = m.find(10);
+        assert(r == std::next(m.begin(), 5));
+        r = m.find(11);
+        assert(r == std::next(m.begin(), 6));
+        r = m.find(12);
+        assert(r == std::next(m.begin(), 7));
+        r = m.find(4);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::set<V, std::less<>> M;
+    typedef M::iterator R;
+
+    V ar[] =
+    {
+        5,
+        6,
+        7,
+        8,
+        9,
+        10,
+        11,
+        12
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == std::next(m.begin()));
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(8);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(10);
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(11);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(12);
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(4);
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::set<V, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 6 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 8 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 10 ));
+    m.insert ( V::make ( 11 ));
+    m.insert ( V::make ( 12 ));
+
+    R r = m.find(5);
+    assert(r == m.begin());
+    r = m.find(6);
+    assert(r == std::next(m.begin()));
+    r = m.find(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.find(8);
+    assert(r == std::next(m.begin(), 3));
+    r = m.find(9);
+    assert(r == std::next(m.begin(), 4));
+    r = m.find(10);
+    assert(r == std::next(m.begin(), 5));
+    r = m.find(11);
+    assert(r == std::next(m.begin(), 6));
+    r = m.find(12);
+    assert(r == std::next(m.begin(), 7));
+    r = m.find(4);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/gcc_workaround.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/gcc_workaround.pass.cpp
new file mode 100644
index 0000000..0eb5002
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/gcc_workaround.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Tests workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37804
+
+#include <set>
+std::set<int> s;
+#include <map>
+
+#include "test_macros.h"
+using std::map;
+using std::multimap;
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/get_allocator.pass.cpp
new file mode 100644
index 0000000..f6a7d5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/get_allocator.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// allocator_type get_allocator() const
+
+#include <set>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::set<int> s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::set<int, std::less<int>, other_allocator<int> > s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/incomplete_type.pass.cpp
new file mode 100644
index 0000000..d50b56f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/incomplete_type.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// Check that std::set and its iterators can be instantiated with an incomplete
+// type.
+
+#include <set>
+
+#include "test_macros.h"
+
+struct A {
+    typedef std::set<A> Set;
+    int data;
+    Set m;
+    Set::iterator it;
+    Set::const_iterator cit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+inline bool operator<(A const& L, A const& R)  { return L.data < R.data; }
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_and_emplace_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_and_emplace_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..21ae9a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_and_emplace_allocator_requirements.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// insert(...)
+// emplace(...)
+// emplace_hint(...)
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../set_allocator_requirement_test_templates.h"
+
+int main(int, char**)
+{
+  testSetInsert<TCT::set<> >();
+  testSetEmplace<TCT::set<> >();
+  testSetEmplaceHint<TCT::set<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_cv.pass.cpp
new file mode 100644
index 0000000..4ef2834
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_cv.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// pair<iterator, bool> insert(const value_type& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_cv_test()
+{
+    typedef Container M;
+    typedef std::pair<typename M::iterator, bool> R;
+    typedef typename M::value_type VT;
+    M m;
+
+    const VT v1(2);
+    R r = m.insert(v1);
+    assert(r.second);
+    assert(r.first == m.begin());
+    assert(m.size() == 1);
+    assert(*r.first == 2);
+
+    const VT v2(1);
+    r = m.insert(v2);
+    assert(r.second);
+    assert(r.first == m.begin());
+    assert(m.size() == 2);
+    assert(*r.first == 1);
+
+    const VT v3(3);
+    r = m.insert(v3);
+    assert(r.second);
+    assert(r.first == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(*r.first == 3);
+
+    r = m.insert(v3);
+    assert(!r.second);
+    assert(r.first == std::prev(m.end()));
+    assert(m.size() == 3);
+    assert(*r.first == 3);
+}
+
+int main(int, char**)
+{
+    do_insert_cv_test<std::set<int> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        do_insert_cv_test<M>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_initializer_list.pass.cpp
new file mode 100644
index 0000000..913be9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_initializer_list.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// void insert(initializer_list<value_type> il);
+
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::set<int> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m.insert({1, 2, 3, 4, 5, 6});
+    assert(m.size() == 8);
+    assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(*++i == V(8));
+    assert(*++i == V(10));
+    }
+    {
+    typedef std::set<int, std::less<int>, min_allocator<int>> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m.insert({1, 2, 3, 4, 5, 6});
+    assert(m.size() == 8);
+    assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(*++i == V(8));
+    assert(*++i == V(10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_cv.pass.cpp
new file mode 100644
index 0000000..a7c0b65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_cv.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// iterator insert(const_iterator position, const value_type& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<int> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_iter.pass.cpp
new file mode 100644
index 0000000..fe49530
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_iter.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// template <class InputIterator>
+//   void insert(InputIterator first, InputIterator last);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<int> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        M m;
+        m.insert(cpp17_input_iterator<const V*>(ar),
+                 cpp17_input_iterator<const V*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::set<int, std::less<int>, min_allocator<int>> M;
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        M m;
+        m.insert(cpp17_input_iterator<const V*>(ar),
+                 cpp17_input_iterator<const V*>(ar + sizeof(ar)/sizeof(ar[0])));
+        assert(m.size() == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_rv.pass.cpp
new file mode 100644
index 0000000..5ce5182
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_iter_rv.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// iterator insert(const_iterator position, value_type&& v);
+
+#include <set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<MoveOnly> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, min_allocator<MoveOnly>> M;
+        typedef M::iterator R;
+        M m;
+        R r = m.insert(m.cend(), M::value_type(2));
+        assert(r == m.begin());
+        assert(m.size() == 1);
+        assert(*r == 2);
+
+        r = m.insert(m.cend(), M::value_type(1));
+        assert(r == m.begin());
+        assert(m.size() == 2);
+        assert(*r == 1);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+
+        r = m.insert(m.cend(), M::value_type(3));
+        assert(r == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_node_type.pass.cpp
new file mode 100644
index 0000000..eac4820
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_node_type.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class set
+
+// insert_return_type insert(node_type&&);
+
+#include <set>
+#include <type_traits>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto p = c.insert(key);
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        typename Container::insert_return_type irt = c.insert(std::move(node));
+        assert(node.empty());
+        assert(irt.inserted);
+        assert(irt.node.empty());
+        assert(*irt.position == i);
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto irt = c.insert(std::move(def));
+        assert(def.empty());
+        assert(!irt.inserted);
+        assert(irt.node.empty());
+        assert(irt.position == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0);
+        auto irt = c.insert(std::move(dupl));
+        assert(dupl.empty());
+        assert(!irt.inserted);
+        assert(!irt.node.empty());
+        assert(irt.position == c.find(0));
+        assert(irt.node.value() == 0);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::set<int> m;
+    test(m);
+    std::set<int, std::less<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..d58cbe3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_node_type_hint.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class set
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <set>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto p = c.insert(key);
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(node.empty());
+        assert(prev + 1 == c.size());
+        assert(*it == i);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::set<int> m;
+    test(m);
+    std::set<int, std::less<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_rv.pass.cpp
new file mode 100644
index 0000000..054cdaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/insert_rv.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// pair<iterator, bool> insert(value_type&& v);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::set<MoveOnly> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.insert(M::value_type(2));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*r.first == 2);
+
+        r = m.insert(M::value_type(1));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(*r.first == 1);
+
+        r = m.insert(M::value_type(3));
+        assert(r.second);
+        assert(r.first == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r.first == 3);
+
+        r = m.insert(M::value_type(3));
+        assert(!r.second);
+        assert(r.first == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r.first == 3);
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, min_allocator<MoveOnly>> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r = m.insert(M::value_type(2));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 1);
+        assert(*r.first == 2);
+
+        r = m.insert(M::value_type(1));
+        assert(r.second);
+        assert(r.first == m.begin());
+        assert(m.size() == 2);
+        assert(*r.first == 1);
+
+        r = m.insert(M::value_type(3));
+        assert(r.second);
+        assert(r.first == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r.first == 3);
+
+        r = m.insert(M::value_type(3));
+        assert(!r.second);
+        assert(r.first == std::prev(m.end()));
+        assert(m.size() == 3);
+        assert(*r.first == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/iterator.pass.cpp
new file mode 100644
index 0000000..4ac1187
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/iterator.pass.cpp
@@ -0,0 +1,238 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+//       iterator begin();
+// const_iterator begin() const;
+//       iterator end();
+// const_iterator end()   const;
+//
+//       reverse_iterator rbegin();
+// const_reverse_iterator rbegin() const;
+//       reverse_iterator rend();
+// const_reverse_iterator rend()   const;
+//
+// const_iterator         cbegin()  const;
+// const_iterator         cend()    const;
+// const_reverse_iterator crbegin() const;
+// const_reverse_iterator crend()   const;
+
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        std::set<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::set<int>::iterator i;
+        i = m.begin();
+        std::set<int>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; j <= static_cast<int>(m.size()); ++j, ++i)
+            assert(*i == j);
+        assert(i == m.end());
+        for (int j = static_cast<int>(m.size()); j >= 1; --j) {
+            --i;
+            assert(*i == j);
+        }
+        assert(i == m.begin());
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        const std::set<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::set<int>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; j <= static_cast<int>(m.size()); ++j, ++i)
+            assert(*i == j);
+        assert(i == m.end());
+        for (int j = static_cast<int>(m.size()); j >= 1; --j) {
+            --i;
+            assert(*i == j);
+        }
+        assert(i == m.begin());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        std::set<int, std::less<int>, min_allocator<int>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        std::set<int, std::less<int>, min_allocator<int>>::iterator i;
+        i = m.begin();
+        std::set<int, std::less<int>, min_allocator<int>>::const_iterator k = i;
+        assert(i == k);
+        for (int j = 1; j <= static_cast<int>(m.size()); ++j, ++i)
+            assert(*i == j);
+        assert(i == m.end());
+        for (int j = static_cast<int>(m.size()); j >= 1; --j) {
+            --i;
+            assert(*i == j);
+        }
+        assert(i == m.begin());
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3,
+            4,
+            4,
+            4,
+            5,
+            5,
+            5,
+            6,
+            6,
+            6,
+            7,
+            7,
+            7,
+            8,
+            8,
+            8
+        };
+        const std::set<int, std::less<int>, min_allocator<int>> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        assert(static_cast<std::size_t>(std::distance(m.begin(), m.end())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.cbegin(), m.cend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.rbegin(), m.rend())) == m.size());
+        assert(static_cast<std::size_t>(std::distance(m.crbegin(), m.crend())) == m.size());
+        std::set<int, std::less<int>, min_allocator<int>>::const_iterator i;
+        i = m.begin();
+        for (int j = 1; j <= static_cast<int>(m.size()); ++j, ++i)
+            assert(*i == j);
+        assert(i == m.end());
+        for (int j = static_cast<int>(m.size()); j >= 1; --j) {
+            --i;
+            assert(*i == j);
+        }
+        assert(i == m.begin());
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::set<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..049acdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <set>
+
+#include <iterator>
+
+using iterator = std::set<int>::iterator;
+using const_iterator = std::set<int>::const_iterator;
+using reverse_iterator = std::set<int>::reverse_iterator;
+using const_reverse_iterator = std::set<int>::const_reverse_iterator;
+using value_type = int;
+
+static_assert(std::bidirectional_iterator<iterator>);
+static_assert(!std::random_access_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_movable<iterator, int*>);
+static_assert(std::indirectly_movable_storable<iterator, int*>);
+static_assert(std::indirectly_copyable<iterator, int*>);
+static_assert(std::indirectly_copyable_storable<iterator, int*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::bidirectional_iterator<const_iterator>);
+static_assert(!std::random_access_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/lower_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/lower_bound.pass.cpp
new file mode 100644
index 0000000..3879504
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/lower_bound.pass.cpp
@@ -0,0 +1,339 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+//       iterator lower_bound(const key_type& k);
+// const_iterator lower_bound(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::set<int> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.lower_bound(5);
+        assert(r == m.begin());
+        r = m.lower_bound(7);
+        assert(r == std::next(m.begin()));
+        r = m.lower_bound(9);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(11);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(13);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(15);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(17);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(19);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.lower_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.lower_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.lower_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.lower_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.lower_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.lower_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.lower_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.lower_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::set<V, std::less<>> M;
+    typedef M::iterator R;
+
+    V ar[] =
+    {
+        5,
+        7,
+        9,
+        11,
+        13,
+        15,
+        17,
+        19
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.lower_bound(5);
+    assert(r == m.begin());
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin()));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(11);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(13);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(15);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(17);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(19);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::set<V, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 11 ));
+    m.insert ( V::make ( 13 ));
+    m.insert ( V::make ( 15 ));
+    m.insert ( V::make ( 17 ));
+    m.insert ( V::make ( 19 ));
+
+    R r = m.lower_bound(5);
+    assert(r == m.begin());
+    r = m.lower_bound(7);
+    assert(r == std::next(m.begin()));
+    r = m.lower_bound(9);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(11);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(13);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(15);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(17);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(19);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.lower_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.lower_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.lower_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.lower_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.lower_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.lower_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.lower_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.lower_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/max_size.pass.cpp
new file mode 100644
index 0000000..e37bfe7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/max_size.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <set>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+      typedef limited_allocator<int, 10> A;
+      typedef std::set<int, std::less<int>, A> C;
+      C c;
+      assert(c.max_size() <= 10);
+      LIBCPP_ASSERT(c.max_size() == 10);
+    }
+    {
+      typedef limited_allocator<int, (size_t)-1> A;
+      typedef std::set<int, std::less<int>, A> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::set<char> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/merge.pass.cpp
new file mode 100644
index 0000000..d734874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/merge.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// class set
+
+// template <class C2>
+//   void merge(set<key_type, C2, allocator_type>& source);
+// template <class C2>
+//   void merge(set<key_type, C2, allocator_type>&& source);
+// template <class C2>
+//   void merge(multiset<key_type, C2, allocator_type>& source);
+// template <class C2>
+//   void merge(multiset<key_type, C2, allocator_type>&& source);
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Set>
+bool set_equal(const Set& set, Set other)
+{
+    return set == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct throw_comparator
+{
+    bool& should_throw_;
+
+    throw_comparator(bool& should_throw) : should_throw_(should_throw) {}
+
+    template <class T>
+    bool operator()(const T& lhs, const T& rhs) const
+    {
+        if (should_throw_)
+            throw 0;
+        return lhs < rhs;
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::set<int> src{1, 3, 5};
+        std::set<int> dst{2, 4, 5};
+        dst.merge(src);
+        assert(set_equal(src, {5}));
+        assert(set_equal(dst, {1, 2, 3, 4, 5}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::set<Counter<int>, throw_comparator> set_type;
+        set_type src({1, 3, 5}, throw_comparator(do_throw));
+        set_type dst({2, 4, 5}, throw_comparator(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(set_equal(src, set_type({1, 3, 5}, throw_comparator(do_throw))));
+        assert(set_equal(dst, set_type({2, 4, 5}, throw_comparator(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct comparator
+    {
+        comparator() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs < rhs;
+        }
+    };
+    {
+        typedef std::set<Counter<int>, std::less<Counter<int>>> first_set_type;
+        typedef std::set<Counter<int>, comparator> second_set_type;
+        typedef std::multiset<Counter<int>, comparator> third_set_type;
+
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(set_equal(first, {1, 2, 3, 4}));
+            assert(set_equal(second, {2, 3}));
+            assert(set_equal(third, {1, 3}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(set_equal(first, {1, 2, 3, 4}));
+            assert(set_equal(second, {2, 3}));
+            assert(set_equal(third, {1, 3}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        std::set<int> first;
+        {
+            std::set<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::multiset<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..597abbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// set
+
+#include <set>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::set<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::random_access_range<range>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::input_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::random_access_range<range const>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::input_range<range>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/alloc.pass.cpp
new file mode 100644
index 0000000..751a5e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/alloc.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set(const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::less<int> C;
+    typedef test_allocator<int> A;
+    std::set<int, C, A> m(A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.get_allocator() == A(5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..8b391ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set& operator=(initializer_list<value_type> il);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+void basic_test() {
+  {
+    typedef std::set<int> C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+  }
+  {
+    typedef std::set<int, std::less<int>, min_allocator<int> > C;
+    typedef C::value_type V;
+    C m = {10, 8};
+    m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+  }
+}
+
+void duplicate_keys_test() {
+  test_allocator_statistics alloc_stats;
+  typedef std::set<int, std::less<int>, test_allocator<int> > Set;
+  {
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 0);
+    Set s({1, 2, 3}, std::less<int>(), test_allocator<int>(&alloc_stats));
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 3);
+    s = {4, 4, 4, 4, 4};
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 1);
+    assert(s.size() == 1);
+    assert(*s.begin() == 4);
+  }
+  LIBCPP_ASSERT(alloc_stats.alloc_count == 0);
+}
+
+int main(int, char**) {
+  basic_test();
+  duplicate_keys_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare.pass.cpp
new file mode 100644
index 0000000..4cd3f30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// explicit set(const key_compare& comp) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> C;
+    const std::set<int, C> m(C(3));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(3));
+    assert(m.value_comp() == C(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare_alloc.pass.cpp
new file mode 100644
index 0000000..dfd89a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare_alloc.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set(const value_compare& comp, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> C;
+    typedef test_allocator<int> A;
+    std::set<int, C, A> m(C(4), A(5));
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    assert(m.key_comp() == C(4));
+    assert(m.get_allocator() == A(5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..58f678d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// Check that std::set fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <set>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs < rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::set<int, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy.pass.cpp
new file mode 100644
index 0000000..2ce9c97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set(const set& m);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::set<int, C, A> m = mo;
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == 1);
+        assert(*std::next(mo.begin()) == 2);
+        assert(*std::next(mo.begin(), 2) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::set<int, C, A> m = mo;
+        assert(m.get_allocator() == A(-2));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+
+        assert(mo.get_allocator() == A(7));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == 1);
+        assert(*std::next(mo.begin()) == 2);
+        assert(*std::next(mo.begin(), 2) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..3fe34bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_alloc.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set(const set& m, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_less<int> C;
+    typedef test_allocator<V> A;
+    std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+    std::set<int, C, A> m(mo, A(3));
+    assert(m.get_allocator() == A(3));
+    assert(m.key_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == 1);
+    assert(*std::next(m.begin()) == 2);
+    assert(*std::next(m.begin(), 2) == 3);
+
+    assert(mo.get_allocator() == A(7));
+    assert(mo.key_comp() == C(5));
+    assert(mo.size() == 3);
+    assert(std::distance(mo.begin(), mo.end()) == 3);
+    assert(*mo.begin() == 1);
+    assert(*std::next(mo.begin()) == 2);
+    assert(*std::next(mo.begin(), 2) == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_assign.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_assign.addressof.compile.pass.cpp
new file mode 100644
index 0000000..e367799
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_assign.addressof.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set& operator=(const set& s);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::set<operator_hijacker> so;
+  std::set<operator_hijacker> s;
+  s = so;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_assign.pass.cpp
new file mode 100644
index 0000000..1ddcd85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/copy_assign.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set& operator=(const set& s);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::set<int, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == 1);
+        assert(*std::next(mo.begin()) == 2);
+        assert(*std::next(mo.begin(), 2) == 3);
+    }
+    {
+        typedef int V;
+        const V ar[] =
+        {
+            1,
+            2,
+            3
+        };
+        std::set<int> m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        std::set<int> *p = &m;
+        m = *p;
+
+        assert(m.size() == 3);
+        assert(std::equal(m.begin(), m.end(), ar));
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef other_allocator<V> A;
+        std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(2));
+        std::set<int, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0])/2, C(3), A(7));
+        m = mo;
+        assert(m.get_allocator() == A(2));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+
+        assert(mo.get_allocator() == A(2));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 3);
+        assert(std::distance(mo.begin(), mo.end()) == 3);
+        assert(*mo.begin() == 1);
+        assert(*std::next(mo.begin()) == 2);
+        assert(*std::next(mo.begin(), 2) == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/deduct.fail.cpp
new file mode 100644
index 0000000..02d2528
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/deduct.fail.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// set(InputIterator, InputIterator,
+//     Compare = Compare(), Allocator = Allocator())
+//   -> set<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>,
+//          class Allocator = allocator<Key>>
+// set(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> set<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// set(InputIterator, InputIterator, Allocator)
+//   -> set<iter-value-type<InputIterator>,
+//          less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// set(initializer_list<Key>, Allocator)
+//   -> set<Key, less<Key>, Allocator>;
+
+#include <functional>
+#include <set>
+#include <type_traits>
+
+struct NotAnAllocator {
+  friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
+};
+
+int main(int, char **) {
+  {
+    // cannot deduce Key from nothing
+    std::set s;
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'set'}}
+  }
+  {
+    // cannot deduce Key from just (Compare)
+    std::set s(std::less<int>{});
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'set'}}
+  }
+  {
+    // cannot deduce Key from just (Compare, Allocator)
+    std::set s(std::less<int>{}, std::allocator<int>{});
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'set'}}
+  }
+  {
+    // cannot deduce Key from just (Allocator)
+    std::set s(std::allocator<int>{});
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'set'}}
+  }
+  {
+    // since we have parens, not braces, this deliberately does not find the
+    // initializer_list constructor
+    NotAnAllocator a;
+    std::set s(a);
+    // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'set'}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/deduct.pass.cpp
new file mode 100644
index 0000000..fdc7255
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/deduct.pass.cpp
@@ -0,0 +1,191 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <set>
+
+// template<class InputIterator,
+//          class Compare = less<iter-value-type<InputIterator>>,
+//          class Allocator = allocator<iter-value-type<InputIterator>>>
+// set(InputIterator, InputIterator,
+//     Compare = Compare(), Allocator = Allocator())
+//   -> set<iter-value-type<InputIterator>, Compare, Allocator>;
+// template<class Key, class Compare = less<Key>,
+//          class Allocator = allocator<Key>>
+// set(initializer_list<Key>, Compare = Compare(), Allocator = Allocator())
+//   -> set<Key, Compare, Allocator>;
+// template<class InputIterator, class Allocator>
+// set(InputIterator, InputIterator, Allocator)
+//   -> set<iter-value-type<InputIterator>,
+//          less<iter-value-type<InputIterator>>, Allocator>;
+// template<class Key, class Allocator>
+// set(initializer_list<Key>, Allocator)
+//   -> set<Key, less<Key>, Allocator>;
+
+#include <algorithm> // std::equal
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <set>
+#include <type_traits>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+struct NotAnAllocator {
+  friend bool operator<(NotAnAllocator, NotAnAllocator) { return false; }
+};
+
+int main(int, char **) {
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::set s(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(s), std::set<int>);
+    const int expected_s[] = { 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::set s(std::begin(arr), std::end(arr), std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::set<int, std::greater<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::set s(std::begin(arr), std::end(arr), std::greater<int>(),
+               test_allocator<int>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(s),
+                     std::set<int, std::greater<int>, test_allocator<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 42);
+  }
+
+  {
+    std::set<long> source;
+    std::set s(source);
+    ASSERT_SAME_TYPE(decltype(s), std::set<long>);
+    assert(s.size() == 0);
+  }
+
+  {
+    std::set<long> source;
+    std::set s{ source };  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(s), std::set<long>);
+    assert(s.size() == 0);
+  }
+
+  {
+    std::set<long> source;
+    std::set s(source, std::set<long>::allocator_type());
+    ASSERT_SAME_TYPE(decltype(s), std::set<long>);
+    assert(s.size() == 0);
+  }
+
+  {
+    std::set s{ 1, 2, 1, INT_MAX, 3 };
+
+    ASSERT_SAME_TYPE(decltype(s), std::set<int>);
+    const int expected_s[] = { 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    std::set s({ 1, 2, 1, INT_MAX, 3 }, std::greater<int>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::set<int, std::greater<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+  }
+
+  {
+    std::set s({ 1, 2, 1, INT_MAX, 3 }, std::greater<int>(),
+               test_allocator<int>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(s),
+                     std::set<int, std::greater<int>, test_allocator<int> >);
+    const int expected_s[] = { INT_MAX, 3, 2, 1 };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 43);
+  }
+
+  {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::set s(std::begin(arr), std::end(arr), test_allocator<int>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(s),
+                     std::set<int, std::less<int>, test_allocator<int> >);
+    const int expected_s[] = { 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 44);
+  }
+
+  {
+    std::set s({ 1, 2, 1, INT_MAX, 3 }, test_allocator<int>(0, 45));
+
+    ASSERT_SAME_TYPE(decltype(s),
+                     std::set<int, std::less<int>, test_allocator<int> >);
+    const int expected_s[] = { 1, 2, 3, INT_MAX };
+    assert(std::equal(s.begin(), s.end(), std::begin(expected_s),
+                      std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 45);
+  }
+
+  {
+    NotAnAllocator a;
+    std::set s{ a }; // set(initializer_list<NotAnAllocator>)
+    ASSERT_SAME_TYPE(decltype(s), std::set<NotAnAllocator>);
+    assert(s.size() == 1);
+  }
+
+  {
+    std::set<long> source;
+    std::set s{ source, source }; // set(initializer_list<set<long>>)
+    ASSERT_SAME_TYPE(decltype(s), std::set<std::set<long> >);
+    assert(s.size() == 1);
+  }
+
+  {
+    NotAnAllocator a;
+    std::set s{ a, a }; // set(initializer_list<NotAnAllocator>)
+    ASSERT_SAME_TYPE(decltype(s), std::set<NotAnAllocator>);
+    assert(s.size() == 1);
+  }
+
+  {
+    int source[3] = { 3, 4, 5 };
+    std::set s(source, source + 3); // set(InputIterator, InputIterator)
+    ASSERT_SAME_TYPE(decltype(s), std::set<int>);
+    assert(s.size() == 3);
+  }
+
+  {
+    int source[3] = { 3, 4, 5 };
+    std::set s{ source, source + 3 }; // set(initializer_list<int*>)
+    ASSERT_SAME_TYPE(decltype(s), std::set<int *>);
+    assert(s.size() == 2);
+  }
+
+  AssociativeContainerDeductionGuidesSfinaeAway<std::set, std::set<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/default.pass.cpp
new file mode 100644
index 0000000..466f513
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// set();
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::set<int> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::set<int, std::less<int>, min_allocator<int>> m;
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+    {
+    typedef explicit_allocator<int> A;
+        {
+        std::set<int, std::less<int>, A> m;
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+        {
+        A a;
+        std::set<int, std::less<int>, A> m(a);
+        assert(m.empty());
+        assert(m.begin() == m.end());
+        }
+    }
+    {
+    std::set<int> m = {};
+    assert(m.empty());
+    assert(m.begin() == m.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..db97fea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/default_noexcept.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// set()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::set<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..c9b7373
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// ~set() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::set<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..4d540c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set(initializer_list<value_type> il, const key_compare& comp = key_compare());
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::set<int> C;
+    typedef C::value_type V;
+    C m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    }
+    {
+    typedef std::set<int, std::less<int>, min_allocator<int>> C;
+    typedef C::value_type V;
+    C m = {1, 2, 3, 4, 5, 6};
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list_compare.pass.cpp
new file mode 100644
index 0000000..2a00aae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list_compare.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set(initializer_list<value_type> il, const key_compare& comp = key_compare());
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef test_less<int> Cmp;
+    typedef std::set<int, Cmp> C;
+    typedef C::value_type V;
+    C m({1, 2, 3, 4, 5, 6}, Cmp(10));
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(m.key_comp() == Cmp(10));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list_compare_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list_compare_alloc.pass.cpp
new file mode 100644
index 0000000..9f92340
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/initializer_list_compare_alloc.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set(initializer_list<value_type> il, const key_compare& comp, const allocator_type& a);
+// set(initializer_list<value_type> il, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef test_less<int> Cmp;
+    typedef test_allocator<int> A;
+    typedef std::set<int, Cmp, A> C;
+    typedef C::value_type V;
+    C m({1, 2, 3, 4, 5, 6}, Cmp(10), A(4));
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(m.key_comp() == Cmp(10));
+    assert(m.get_allocator() == A(4));
+    }
+    {
+    typedef test_less<int> Cmp;
+    typedef test_allocator<int> A;
+    typedef std::set<int, Cmp, A> C;
+    typedef C::value_type V;
+    C m({1, 2, 3, 4, 5, 6}, A(4));
+    assert(m.size() == 6);
+    assert(std::distance(m.begin(), m.end()) == 6);
+    C::const_iterator i = m.cbegin();
+    assert(*i == V(1));
+    assert(*++i == V(2));
+    assert(*++i == V(3));
+    assert(*++i == V(4));
+    assert(*++i == V(5));
+    assert(*++i == V(6));
+    assert(m.get_allocator() == A(4));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter.pass.cpp
new file mode 100644
index 0000000..9871d0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// template <class InputIterator>
+//     set(InputIterator first, InputIterator last);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    std::set<V> m(cpp17_input_iterator<const int*>(ar),
+                  cpp17_input_iterator<const int*>(ar+sizeof(ar)/sizeof(ar[0])));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == 1);
+    assert(*std::next(m.begin()) == 2);
+    assert(*std::next(m.begin(), 2) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    std::set<V, std::less<int>, min_allocator<int>> m(cpp17_input_iterator<const int*>(ar),
+                  cpp17_input_iterator<const int*>(ar+sizeof(ar)/sizeof(ar[0])));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == 1);
+    assert(*std::next(m.begin()) == 2);
+    assert(*std::next(m.begin(), 2) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..2cdad2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter_alloc.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// template <class InputIterator>
+//     set(InputIterator first, InputIterator last,
+//         const value_compare& comp, const allocator_type& a);
+//
+// template <class InputIterator>
+//     set(InputIterator first, InputIterator last,
+//         const allocator_type& a);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_less<V> C;
+    typedef test_allocator<V> A;
+    std::set<V, C, A> m(cpp17_input_iterator<const V*>(ar),
+                        cpp17_input_iterator<const V*>(ar+sizeof(ar)/sizeof(ar[0])),
+                        C(5), A(7));
+    assert(m.value_comp() == C(5));
+    assert(m.get_allocator() == A(7));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == 1);
+    assert(*std::next(m.begin()) == 2);
+    assert(*std::next(m.begin(), 2) == 3);
+    }
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_allocator<V> A;
+    typedef test_less<int> C;
+    A a(7);
+    std::set<V, C, A> m(ar, ar+sizeof(ar)/sizeof(ar[0]), a);
+
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == 1);
+    assert(*std::next(m.begin()) == 2);
+    assert(*std::next(m.begin(), 2) == 3);
+    assert(m.get_allocator() == a);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter_comp.pass.cpp
new file mode 100644
index 0000000..c783282
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/iter_iter_comp.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// template <class InputIterator>
+//     set(InputIterator first, InputIterator last, const value_compare& comp);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef int V;
+    V ar[] =
+    {
+        1,
+        1,
+        1,
+        2,
+        2,
+        2,
+        3,
+        3,
+        3
+    };
+    typedef test_less<V> C;
+    std::set<V, C> m(cpp17_input_iterator<const V*>(ar),
+                     cpp17_input_iterator<const V*>(ar+sizeof(ar)/sizeof(ar[0])), C(5));
+    assert(m.value_comp() == C(5));
+    assert(m.size() == 3);
+    assert(std::distance(m.begin(), m.end()) == 3);
+    assert(*m.begin() == 1);
+    assert(*std::next(m.begin()) == 2);
+    assert(*std::next(m.begin(), 2) == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move.pass.cpp
new file mode 100644
index 0000000..7fa0f8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set(set&& s);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int V;
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::set<int, C, A> mo(C(5), A(7));
+        std::set<int, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 0);
+        assert(std::distance(m.begin(), m.end()) == 0);
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef test_allocator<V> A;
+        std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A(7));
+        std::set<int, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A(7));
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+
+        assert(mo.get_allocator() == A(test_alloc_base::moved_value));
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+    {
+        typedef int V;
+        V ar[] =
+        {
+            1,
+            1,
+            1,
+            2,
+            2,
+            2,
+            3,
+            3,
+            3
+        };
+        typedef test_less<int> C;
+        typedef min_allocator<V> A;
+        std::set<int, C, A> mo(ar, ar+sizeof(ar)/sizeof(ar[0]), C(5), A());
+        std::set<int, C, A> m = std::move(mo);
+        assert(m.get_allocator() == A());
+        assert(m.key_comp() == C(5));
+        assert(m.size() == 3);
+        assert(std::distance(m.begin(), m.end()) == 3);
+        assert(*m.begin() == 1);
+        assert(*std::next(m.begin()) == 2);
+        assert(*std::next(m.begin(), 2) == 3);
+
+        assert(mo.get_allocator() == A());
+        assert(mo.key_comp() == C(5));
+        assert(mo.size() == 0);
+        assert(std::distance(mo.begin(), mo.end()) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..59d536e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_alloc.pass.cpp
@@ -0,0 +1,194 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set(set&& s, const allocator_type& a);
+
+#include <set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "Counter.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(7));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(std::move(m1), A(5));
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef Counter<int> V;
+        typedef std::less<V> C;
+        typedef test_allocator<V> A;
+        typedef std::set<V, C, A> M;
+        typedef V* I;
+        Counter_base::gConstructed = 0;
+        {
+            V a1[] =
+            {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+            };
+            const size_t num = sizeof(a1)/sizeof(a1[0]);
+            assert(Counter_base::gConstructed == num);
+
+            M m1(I(a1), I(a1+num), C(), A());
+            assert(Counter_base::gConstructed == 3+num);
+
+            M m2(m1);
+            assert(m2 == m1);
+            assert(Counter_base::gConstructed == 6+num);
+
+            M m3(std::move(m1), A());
+            assert(m3 == m2);
+            LIBCPP_ASSERT(m1.empty());
+            assert(Counter_base::gConstructed >= (int)(6+num));
+            assert(Counter_base::gConstructed <= (int)(m1.size()+6+num));
+
+            {
+            M m4(std::move(m2), A(5));
+            assert(Counter_base::gConstructed >= (int)(6+num));
+            assert(Counter_base::gConstructed <= (int)(m1.size()+m2.size()+6+num));
+            assert(m4 == m3);
+            LIBCPP_ASSERT(m2.empty());
+            }
+            assert(Counter_base::gConstructed >= (int)(3+num));
+            assert(Counter_base::gConstructed <= (int)(m1.size()+m2.size()+3+num));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..ea85051
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_assign.pass.cpp
@@ -0,0 +1,186 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// class set
+
+// set& operator=(set&& s);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "../../../test_compare.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(7));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef test_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(5));
+        assert(m3.key_comp() == C(5));
+        LIBCPP_ASSERT(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef other_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A(7));
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A(7));
+        M m3(C(3), A(5));
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A(7));
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+    {
+        typedef MoveOnly V;
+        typedef test_less<MoveOnly> C;
+        typedef min_allocator<V> A;
+        typedef std::set<MoveOnly, C, A> M;
+        typedef std::move_iterator<V*> I;
+        V a1[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m1(I(a1), I(a1+sizeof(a1)/sizeof(a1[0])), C(5), A());
+        V a2[] =
+        {
+            V(1),
+            V(1),
+            V(1),
+            V(2),
+            V(2),
+            V(2),
+            V(3),
+            V(3),
+            V(3)
+        };
+        M m2(I(a2), I(a2+sizeof(a2)/sizeof(a2[0])), C(5), A());
+        M m3(C(3), A());
+        m3 = std::move(m1);
+        assert(m3 == m2);
+        assert(m3.get_allocator() == A());
+        assert(m3.key_comp() == C(5));
+        assert(m1.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..9c177f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// set& operator=(set&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::set<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..d99b853
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.cons/move_noexcept.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// set(set&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::set<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..4c90955
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.erasure/erase_if.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <set>
+
+// template <class T, class Compare, class Allocator, class Predicate>
+//   typename set<T, Compare, Allocator>::size_type
+//   erase_if(set<T, Compare, Allocator>& c, Predicate pred);
+
+#include <set>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == expected);
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(), is1, S(), 0);
+
+    test0(S({1}), is1, S(), 1);
+    test0(S({1}), is2, S({1}), 0);
+
+    test0(S({1, 2}), is1, S({2}), 1);
+    test0(S({1, 2}), is2, S({1}), 1);
+    test0(S({1, 2}), is3, S({1, 2}), 0);
+
+    test0(S({1, 2, 3}), is1, S({2, 3}), 1);
+    test0(S({1, 2, 3}), is2, S({1, 3}), 1);
+    test0(S({1, 2, 3}), is3, S({1, 2}), 1);
+    test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
+
+    test0(S({1, 2, 3}), True, S(), 3);
+    test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::set<int>>();
+    test<std::set<int, std::less<int>, min_allocator<int>>> ();
+    test<std::set<int, std::less<int>, test_allocator<int>>> ();
+
+    test<std::set<long>>();
+    test<std::set<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.nonmember/op_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.nonmember/op_compare.pass.cpp
new file mode 100644
index 0000000..cc427fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.nonmember/op_compare.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// template<class Key, class Compare, class Alloc>
+// bool operator==(const std::set<Key, Compare, Alloc>& lhs,
+//                 const std::set<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator!=(const std::set<Key, Compare, Alloc>& lhs,
+//                 const std::set<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator<(const std::set<Key, Compare, Alloc>& lhs,
+//                const std::set<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator>(const std::set<Key, Compare, Alloc>& lhs,
+//                const std::set<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator<=(const std::set<Key, Compare, Alloc>& lhs,
+//                 const std::set<Key, Compare, Alloc>& rhs);
+//
+// template<class Key, class Compare, class Alloc>
+// bool operator>=(const std::set<Key, Compare, Alloc>& lhs,
+//                 const std::set<Key, Compare, Alloc>& rhs);
+
+#include <set>
+#include <cassert>
+#include <string>
+
+#include "test_comparisons.h"
+
+int main(int, char**) {
+    {
+        std::set<int> s1, s2;
+        s1.insert(1);
+        s2.insert(2);
+        const std::set<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, false, true));
+    }
+    {
+        std::set<int> s1, s2;
+        s1.insert(1);
+        s2.insert(1);
+        const std::set<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, true, false));
+    }
+    {
+        std::set<int> s1, s2;
+        s1.insert(1);
+        s2.insert(1);
+        s2.insert(2);
+        const std::set<int>& cs1 = s1, cs2 = s2;
+        assert(testComparisons(cs1, cs2, false, true));
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.observers/comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.observers/comp.pass.cpp
new file mode 100644
index 0000000..6f573a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.observers/comp.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// key_compare key_comp() const;
+// value_compare value_comp() const;
+
+#include <set>
+#include <cassert>
+
+int main(int, char**) {
+    typedef std::set<int> set_type;
+
+    set_type s;
+    std::pair<set_type::iterator, bool> p1 = s.insert(1);
+    std::pair<set_type::iterator, bool> p2 = s.insert(2);
+
+    const set_type& cs = s;
+
+    assert(cs.key_comp()(*p1.first, *p2.first));
+    assert(!cs.key_comp()(*p2.first, *p1.first));
+
+    assert(cs.value_comp()(*p1.first, *p2.first));
+    assert(!cs.value_comp()(*p2.first, *p1.first));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/member_swap.pass.cpp
new file mode 100644
index 0000000..ee91ca3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/member_swap.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// void swap(set& m);
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::set<int> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        m1.swap(m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/non_member_swap.pass.cpp
new file mode 100644
index 0000000..2c54ecb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/non_member_swap.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// void swap(set& m);
+
+#include <set>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../test_compare.h"
+
+int main(int, char**)
+{
+    typedef int V;
+    {
+    typedef std::set<int> M;
+    {
+        M m1;
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1;
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2;
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    {
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+    }
+    }
+    {
+        typedef test_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::set<int, C, A> M;
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1, 1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(1, 2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator().get_id() == 1);
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef other_allocator<V> A;
+        typedef test_less<int> C;
+        typedef std::set<int, C, A> M;
+        V ar1[] =
+        {
+            1,
+            2,
+            3,
+            4
+        };
+        V ar2[] =
+        {
+            5,
+            6,
+            7,
+            8,
+            9,
+            10,
+            11,
+            12
+        };
+        M m1(ar1, ar1+sizeof(ar1)/sizeof(ar1[0]), C(1), A(1));
+        M m2(ar2, ar2+sizeof(ar2)/sizeof(ar2[0]), C(2), A(2));
+        M m1_save = m1;
+        M m2_save = m2;
+        swap(m1, m2);
+        assert(m1 == m2_save);
+        assert(m2 == m1_save);
+        assert(m1.key_comp() == C(2));
+        assert(m1.get_allocator() == A(2));
+        assert(m2.key_comp() == C(1));
+        assert(m2.get_allocator() == A(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..b04c77b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/set.special/swap_noexcept.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <set>
+
+// void swap(set& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//              noexcept(swap(declval<Compare&>(), declval<Compare&>())));
+
+// This tests a conforming extension
+
+#include <set>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::set<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for comp
+    typedef std::set<MoveOnly, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for comp
+    typedef std::set<MoveOnly, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for comp
+    typedef std::set<MoveOnly, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for comp
+    typedef std::set<MoveOnly, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for comp
+    typedef std::set<MoveOnly, some_comp2<MoveOnly>, some_alloc3<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/size.pass.cpp
new file mode 100644
index 0000000..bdce58e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/size.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+// size_type size() const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::set<int> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    M m;
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/types.pass.cpp
new file mode 100644
index 0000000..2d29a80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/types.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// template <class Key, class Compare = less<Key>,
+//           class Allocator = allocator<Key>>
+// class set
+// {
+// public:
+//     // types:
+//     typedef Key                                      key_type;
+//     typedef key_type                                 value_type;
+//     typedef Compare                                  key_compare;
+//     typedef key_compare                              value_compare;
+//     typedef Allocator                                allocator_type;
+//     typedef typename allocator_type::reference       reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     ...
+// };
+
+#include <set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::set<int> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::value_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, std::allocator<int> >::value), "");
+    static_assert((std::is_same<C::reference, int&>::value), "");
+    static_assert((std::is_same<C::const_reference, const int&>::value), "");
+    static_assert((std::is_same<C::pointer, int*>::value), "");
+    static_assert((std::is_same<C::const_pointer, const int*>::value), "");
+    static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::set<int, std::less<int>, min_allocator<int>> C;
+    static_assert((std::is_same<C::key_type, int>::value), "");
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::key_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::value_compare, std::less<int> >::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<int> >::value), "");
+    static_assert((std::is_same<C::reference, int&>::value), "");
+    static_assert((std::is_same<C::const_reference, const int&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<int>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const int>>::value), "");
+//  min_allocator doesn't have a size_type, so one gets synthesized
+    static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/associative/set/upper_bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/associative/set/upper_bound.pass.cpp
new file mode 100644
index 0000000..9dec950
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/associative/set/upper_bound.pass.cpp
@@ -0,0 +1,338 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <set>
+
+// class set
+
+//       iterator upper_bound(const key_type& k);
+// const_iterator upper_bound(const key_type& k) const;
+
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "private_constructor.h"
+
+int main(int, char**)
+{
+    {
+    typedef int V;
+    typedef std::set<int> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef int V;
+    typedef std::set<int, std::less<int>, min_allocator<int>> M;
+    {
+        typedef M::iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    {
+        typedef M::const_iterator R;
+        V ar[] =
+        {
+            5,
+            7,
+            9,
+            11,
+            13,
+            15,
+            17,
+            19
+        };
+        const M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+        R r = m.upper_bound(5);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(7);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(9);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(11);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(13);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(15);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(17);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(19);
+        assert(r == std::next(m.begin(), 8));
+        r = m.upper_bound(4);
+        assert(r == std::next(m.begin(), 0));
+        r = m.upper_bound(6);
+        assert(r == std::next(m.begin(), 1));
+        r = m.upper_bound(8);
+        assert(r == std::next(m.begin(), 2));
+        r = m.upper_bound(10);
+        assert(r == std::next(m.begin(), 3));
+        r = m.upper_bound(12);
+        assert(r == std::next(m.begin(), 4));
+        r = m.upper_bound(14);
+        assert(r == std::next(m.begin(), 5));
+        r = m.upper_bound(16);
+        assert(r == std::next(m.begin(), 6));
+        r = m.upper_bound(18);
+        assert(r == std::next(m.begin(), 7));
+        r = m.upper_bound(20);
+        assert(r == std::next(m.begin(), 8));
+    }
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+    typedef int V;
+    typedef std::set<V, std::less<>> M;
+    typedef M::iterator R;
+
+    V ar[] =
+    {
+        5,
+        7,
+        9,
+        11,
+        13,
+        15,
+        17,
+        19
+    };
+    M m(ar, ar+sizeof(ar)/sizeof(ar[0]));
+    R r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(11);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(13);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(15);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(17);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(19);
+    assert(r == std::next(m.begin(), 8));
+    r = m.upper_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+
+    {
+    typedef PrivateConstructor V;
+    typedef std::set<V, std::less<>> M;
+    typedef M::iterator R;
+
+    M m;
+    m.insert ( V::make ( 5 ));
+    m.insert ( V::make ( 7 ));
+    m.insert ( V::make ( 9 ));
+    m.insert ( V::make ( 11 ));
+    m.insert ( V::make ( 13 ));
+    m.insert ( V::make ( 15 ));
+    m.insert ( V::make ( 17 ));
+    m.insert ( V::make ( 19 ));
+
+    R r = m.upper_bound(5);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(7);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(9);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(11);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(13);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(15);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(17);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(19);
+    assert(r == std::next(m.begin(), 8));
+    r = m.upper_bound(4);
+    assert(r == std::next(m.begin(), 0));
+    r = m.upper_bound(6);
+    assert(r == std::next(m.begin(), 1));
+    r = m.upper_bound(8);
+    assert(r == std::next(m.begin(), 2));
+    r = m.upper_bound(10);
+    assert(r == std::next(m.begin(), 3));
+    r = m.upper_bound(12);
+    assert(r == std::next(m.begin(), 4));
+    r = m.upper_bound(14);
+    assert(r == std::next(m.begin(), 5));
+    r = m.upper_bound(16);
+    assert(r == std::next(m.begin(), 6));
+    r = m.upper_bound(18);
+    assert(r == std::next(m.begin(), 7));
+    r = m.upper_bound(20);
+    assert(r == std::next(m.begin(), 8));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/check_consecutive.h b/app/src/main/cpp/libcxx/test/std/containers/check_consecutive.h
new file mode 100644
index 0000000..5f549c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/check_consecutive.h
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CHECK_CONSECUTIVE_H
+#define CHECK_CONSECUTIVE_H
+
+// <unordered_multiset>
+// <unordered_multimap>
+
+#include <cassert>
+#include <set>
+#include <stddef.h>
+
+// Check consecutive equal values in an unordered_multiset iterator
+template <typename Iter>
+void CheckConsecutiveValues(Iter pos, Iter end, typename Iter::value_type value, size_t count)
+{
+    for ( size_t i = 0; i < count; ++i )
+    {
+        assert(pos != end);
+        assert(*pos == value);
+        ++pos;
+    }
+    assert(pos == end || *pos != value);
+}
+
+// Check consecutive equal keys in an unordered_multimap iterator
+template <typename Iter>
+void CheckConsecutiveKeys(Iter pos, Iter end, typename Iter::value_type::first_type key, std::multiset<typename Iter::value_type::second_type>& values)
+{
+    while (!values.empty())
+    {
+        assert(pos != end);
+        assert(pos->first == key);
+        assert(values.find(pos->second) != values.end());
+        values.erase(values.find(pos->second));
+        ++pos;
+    }
+    assert(pos == end || pos->first != key);
+}
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.format.pass.cpp
new file mode 100644
index 0000000..7806576
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.format.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// [container.adaptors.format]
+// For each of queue, priority_queue, and stack, the library provides the
+// following formatter specialization where adaptor-type is the name of the
+// template:
+//
+// template<class charT, class T, formattable<charT> Container, class... U>
+//   struct formatter<adaptor-type<T, Container, U...>, charT>
+
+// template<class... Args>
+//   string format(format_string<Args...> fmt, Args&&... args);
+// template<class... Args>
+//   wstring format(wformat_string<Args...> fmt, Args&&... args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+};
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.tests.h b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.tests.h
new file mode 100644
index 0000000..489de3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.tests.h
@@ -0,0 +1,950 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_CONTAINERS_CONTAINER_ADAPTORS_CONTAINER_ADAPTORS_FORMAT_FORMAT_FUNCTIONS_TESTS_H
+#define TEST_STD_CONTAINERS_CONTAINER_ADAPTORS_CONTAINER_ADAPTORS_FORMAT_FORMAT_FUNCTIONS_TESTS_H
+
+#include <algorithm>
+#include <array>
+#include <charconv>
+#include <concepts>
+#include <format>
+#include <list>
+#include <queue>
+#include <stack>
+
+#include "format.functions.common.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+//
+// Char
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_default(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  // Note when no range-underlying-spec is present the char is escaped,
+  check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{}"), input);
+
+  // when one is present there is no escaping,
+  check(SV("[H, e, l, l, o]"), SV("{::}"), input);
+  // unless forced by the type specifier.
+  check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{::?}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("['H', 'e', 'l', 'l', 'o']     "), SV("{:30}"), input);
+  check(SV("['H', 'e', 'l', 'l', 'o']*****"), SV("{:*<30}"), input);
+  check(SV("__['H', 'e', 'l', 'l', 'o']___"), SV("{:_^30}"), input);
+  check(SV("#####['H', 'e', 'l', 'l', 'o']"), SV("{:#>30}"), input);
+
+  check(SV("['H', 'e', 'l', 'l', 'o']     "), SV("{:{}}"), input, 30);
+  check(SV("['H', 'e', 'l', 'l', 'o']*****"), SV("{:*<{}}"), input, 30);
+  check(SV("__['H', 'e', 'l', 'l', 'o']___"), SV("{:_^{}}"), input, 30);
+  check(SV("#####['H', 'e', 'l', 'l', 'o']"), SV("{:#>{}}"), input, 30);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__'H', 'e', 'l', 'l', 'o'___"), SV("{:_^28n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[H   , e   , l   , l   , o   ]"), SV("{::4}"), input);
+  check(SV("[H***, e***, l***, l***, o***]"), SV("{::*<4}"), input);
+  check(SV("[_H__, _e__, _l__, _l__, _o__]"), SV("{::_^4}"), input);
+  check(SV("[:::H, :::e, :::l, :::l, :::o]"), SV("{:::>4}"), input);
+
+  check(SV("[H   , e   , l   , l   , o   ]"), SV("{::{}}"), input, 4);
+  check(SV("[H***, e***, l***, l***, o***]"), SV("{::*<{}}"), input, 4);
+  check(SV("[_H__, _e__, _l__, _l__, _o__]"), SV("{::_^{}}"), input, 4);
+  check(SV("[:::H, :::e, :::l, :::l, :::o]"), SV("{:::>{}}"), input, 4);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("[72, 101, 108, 108, 111]"), SV("{::-d}"), input);
+  check(SV("[+72, +101, +108, +108, +111]"), SV("{::+d}"), input);
+  check(SV("[ 72,  101,  108,  108,  111]"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("[0x48, 0x65, 0x6c, 0x6c, 0x6f]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("[00110, 00145, 00154, 00154, 00157]"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[H, e, l, l, o]"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^25::>2}"), input);
+  check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^{}::>2}"), input, 25);
+  check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^{}::>{}}"), input, 25, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 25);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("Hello"), SV("{:s}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("Hello   "), SV("{:8s}"), input);
+  check(SV("Hello***"), SV("{:*<8s}"), input);
+  check(SV("_Hello__"), SV("{:_^8s}"), input);
+  check(SV("###Hello"), SV("{:#>8s}"), input);
+
+  check(SV("Hello   "), SV("{:{}s}"), input, 8);
+  check(SV("Hello***"), SV("{:*<{}s}"), input, 8);
+  check(SV("_Hello__"), SV("{:_^{}s}"), input, 8);
+  check(SV("###Hello"), SV("{:#>{}s}"), input, 8);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<s}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: s}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#s}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0s}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.s}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:Ls}"), input);
+
+  // *** n
+  check_exception("The n option and type s can't be used together", SV("{:ns}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("Type s and an underlying format specification can't be used together", SV("{:s:}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check_exception("Type s and an underlying format specification can't be used together", SV("{:5s:5}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_escaped_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV(R"("Hello")"), SV("{:?s}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"("Hello"   )"), SV("{:10?s}"), input);
+  check(SV(R"("Hello"***)"), SV("{:*<10?s}"), input);
+  check(SV(R"(_"Hello"__)"), SV("{:_^10?s}"), input);
+  check(SV(R"(###"Hello")"), SV("{:#>10?s}"), input);
+
+  check(SV(R"("Hello"   )"), SV("{:{}?s}"), input, 10);
+  check(SV(R"("Hello"***)"), SV("{:*<{}?s}"), input, 10);
+  check(SV(R"(_"Hello"__)"), SV("{:_^{}?s}"), input, 10);
+  check(SV(R"(###"Hello")"), SV("{:#>{}?s}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<?s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<?s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<?s}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-?s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+?s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: ?s}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#?s}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0?s}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.?s}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L?s}"), input);
+
+  // *** n
+  check_exception("The n option and type ?s can't be used together", SV("{:n?s}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("Type ?s and an underlying format specification can't be used together", SV("{:?s:}"), input);
+
+  // ***** Both have a format-spec
+  check_exception("Type ?s and an underlying format specification can't be used together", SV("{:5?s:5}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char(TestFunction check, ExceptionTest check_exception) {
+  // These values are in numeric order when using ASCII, which is used by the priority_queue.
+  std::array input{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')};
+  test_char_default<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_char_default<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_char_default<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+
+  test_char_string<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_char_string<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_char_string<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+
+  test_char_escaped_string<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_char_escaped_string<CharT>(
+      check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_char_escaped_string<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// char -> wchar_t
+//
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <class TestFunction, class ExceptionTest>
+void test_char_to_wchar(TestFunction check, ExceptionTest check_exception) {
+  std::array input{'H', 'e', 'l', 'l', 'o'};
+  test_char_default<wchar_t>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_char_default<wchar_t>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_char_default<wchar_t>(check, check_exception, std::stack{input.begin(), input.end()});
+
+  // The types s and ?s may only be used when using range_formatter<T, charT>
+  // where the types T and charT are the same. This means this can't be used for
+  // range_formatter<wchar_t, char> even when formatter<wchar_t, char> has a
+  // debug-enabled specialization.
+
+  using CharT = wchar_t;
+  check_exception("The range-format-spec type s requires formatting a character type",
+                  SV("{:s}"),
+                  std::queue{input.begin(), input.end()});
+  check_exception("The range-format-spec type s requires formatting a character type",
+                  SV("{:s}"),
+                  std::priority_queue{input.begin(), input.end()});
+  check_exception("The range-format-spec type s requires formatting a character type",
+                  SV("{:s}"),
+                  std::stack{input.begin(), input.end()});
+  check_exception("The range-format-spec type ?s requires formatting a character type",
+                  SV("{:?s}"),
+                  std::queue{input.begin(), input.end()});
+  check_exception("The range-format-spec type ?s requires formatting a character type",
+                  SV("{:?s}"),
+                  std::priority_queue{input.begin(), input.end()});
+  check_exception("The range-format-spec type ?s requires formatting a character type",
+                  SV("{:?s}"),
+                  std::stack{input.begin(), input.end()});
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+//
+// Bool
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_bool(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[true, true, false]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[true, true, false]     "), SV("{:24}"), input);
+  check(SV("[true, true, false]*****"), SV("{:*<24}"), input);
+  check(SV("__[true, true, false]___"), SV("{:_^24}"), input);
+  check(SV("#####[true, true, false]"), SV("{:#>24}"), input);
+
+  check(SV("[true, true, false]     "), SV("{:{}}"), input, 24);
+  check(SV("[true, true, false]*****"), SV("{:*<{}}"), input, 24);
+  check(SV("__[true, true, false]___"), SV("{:_^{}}"), input, 24);
+  check(SV("#####[true, true, false]"), SV("{:#>{}}"), input, 24);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__true, true, false___"), SV("{:_^22n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[true   , true   , false  ]"), SV("{::7}"), input);
+  check(SV("[true***, true***, false**]"), SV("{::*<7}"), input);
+  check(SV("[_true__, _true__, _false_]"), SV("{::_^7}"), input);
+  check(SV("[:::true, :::true, ::false]"), SV("{:::>7}"), input);
+
+  check(SV("[true   , true   , false  ]"), SV("{::{}}"), input, 7);
+  check(SV("[true***, true***, false**]"), SV("{::*<{}}"), input, 7);
+  check(SV("[_true__, _true__, _false_]"), SV("{::_^{}}"), input, 7);
+  check(SV("[:::true, :::true, ::false]"), SV("{:::>{}}"), input, 7);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("[1, 1, 0]"), SV("{::-d}"), input);
+  check(SV("[+1, +1, +0]"), SV("{::+d}"), input);
+  check(SV("[ 1,  1,  0]"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("[0x1, 0x1, 0x0]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("[00001, 00001, 00000]"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[true, true, false]"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^32::>7}"), input);
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>7}"), input, 32);
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>{}}"), input, 32, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 32);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_bool(TestFunction check, ExceptionTest check_exception) {
+  std::array input{true, true, false};
+  test_bool<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  // TODO FMT Use std::vector<bool> after it has been implemented.
+  test_bool<CharT>(check, check_exception, std::priority_queue<bool, std::deque<bool>>{input.begin(), input.end()});
+  test_bool<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// Integral
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[-42, 1, 2, 42]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[-42, 1, 2, 42]     "), SV("{:20}"), input);
+  check(SV("[-42, 1, 2, 42]*****"), SV("{:*<20}"), input);
+  check(SV("__[-42, 1, 2, 42]___"), SV("{:_^20}"), input);
+  check(SV("#####[-42, 1, 2, 42]"), SV("{:#>20}"), input);
+
+  check(SV("[-42, 1, 2, 42]     "), SV("{:{}}"), input, 20);
+  check(SV("[-42, 1, 2, 42]*****"), SV("{:*<{}}"), input, 20);
+  check(SV("__[-42, 1, 2, 42]___"), SV("{:_^{}}"), input, 20);
+  check(SV("#####[-42, 1, 2, 42]"), SV("{:#>{}}"), input, 20);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42, 1, 2, 42___"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[  -42,     1,     2,    42]"), SV("{::5}"), input);
+  check(SV("[-42**, 1****, 2****, 42***]"), SV("{::*<5}"), input);
+  check(SV("[_-42_, __1__, __2__, _42__]"), SV("{::_^5}"), input);
+  check(SV("[::-42, ::::1, ::::2, :::42]"), SV("{:::>5}"), input);
+
+  check(SV("[  -42,     1,     2,    42]"), SV("{::{}}"), input, 5);
+  check(SV("[-42**, 1****, 2****, 42***]"), SV("{::*<{}}"), input, 5);
+  check(SV("[_-42_, __1__, __2__, _42__]"), SV("{::_^{}}"), input, 5);
+  check(SV("[::-42, ::::1, ::::2, :::42]"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check(SV("[-42, 1, 2, 42]"), SV("{::-}"), input);
+  check(SV("[-42, +1, +2, +42]"), SV("{::+}"), input);
+  check(SV("[-42,  1,  2,  42]"), SV("{:: }"), input);
+
+  // *** alternate form ***
+  check(SV("[-0x2a, 0x1, 0x2, 0x2a]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check(SV("[-0042, 00001, 00002, 00042]"), SV("{::05}"), input);
+  check(SV("[-002a, 00001, 00002, 0002a]"), SV("{::05x}"), input);
+  check(SV("[-0x2a, 0x001, 0x002, 0x02a]"), SV("{::#05x}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[-42, 1, 2, 42]"), SV("{::L}"), input); // does nothing in this test, but is accepted.
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX"))
+    check_exception("The format-spec type has a type not supported for an integer argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[::-42, ::::1, ::::2, :::42]^^^"), SV("{:^^33::>5}"), input);
+  check(SV("^^[::-42, ::::1, ::::2, :::42]^^^"), SV("{:^^{}::>5}"), input, 33);
+  check(SV("^^[::-42, ::::1, ::::2, :::42]^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 33);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception) {
+  std::array input{-42, 1, 2, 42};
+  test_int<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_int<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_int<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// Floating point
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[-42.5, 0, 1.25, 42.5]     "), SV("{:27}"), input);
+  check(SV("[-42.5, 0, 1.25, 42.5]*****"), SV("{:*<27}"), input);
+  check(SV("__[-42.5, 0, 1.25, 42.5]___"), SV("{:_^27}"), input);
+  check(SV("#####[-42.5, 0, 1.25, 42.5]"), SV("{:#>27}"), input);
+
+  check(SV("[-42.5, 0, 1.25, 42.5]     "), SV("{:{}}"), input, 27);
+  check(SV("[-42.5, 0, 1.25, 42.5]*****"), SV("{:*<{}}"), input, 27);
+  check(SV("__[-42.5, 0, 1.25, 42.5]___"), SV("{:_^{}}"), input, 27);
+  check(SV("#####[-42.5, 0, 1.25, 42.5]"), SV("{:#>{}}"), input, 27);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42.5, 0, 1.25, 42.5___"), SV("{:_^25n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[-42.5,     0,  1.25,  42.5]"), SV("{::5}"), input);
+  check(SV("[-42.5, 0****, 1.25*, 42.5*]"), SV("{::*<5}"), input);
+  check(SV("[-42.5, __0__, 1.25_, 42.5_]"), SV("{::_^5}"), input);
+  check(SV("[-42.5, ::::0, :1.25, :42.5]"), SV("{:::>5}"), input);
+
+  check(SV("[-42.5,     0,  1.25,  42.5]"), SV("{::{}}"), input, 5);
+  check(SV("[-42.5, 0****, 1.25*, 42.5*]"), SV("{::*<{}}"), input, 5);
+  check(SV("[-42.5, __0__, 1.25_, 42.5_]"), SV("{::_^{}}"), input, 5);
+  check(SV("[-42.5, ::::0, :1.25, :42.5]"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::-}"), input);
+  check(SV("[-42.5, +0, +1.25, +42.5]"), SV("{::+}"), input);
+  check(SV("[-42.5,  0,  1.25,  42.5]"), SV("{:: }"), input);
+
+  // *** alternate form ***
+  check(SV("[-42.5, 0., 1.25, 42.5]"), SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check(SV("[-42.5, 00000, 01.25, 042.5]"), SV("{::05}"), input);
+  check(SV("[-42.5, 0000., 01.25, 042.5]"), SV("{::#05}"), input);
+
+  // *** precision ***
+  check(SV("[-42, 0, 1.2, 42]"), SV("{::.2}"), input);
+  check(SV("[-42.500, 0.000, 1.250, 42.500]"), SV("{::.3f}"), input);
+
+  check(SV("[-42, 0, 1.2, 42]"), SV("{::.{}}"), input, 2);
+  check(SV("[-42.500, 0.000, 1.250, 42.500]"), SV("{::.{}f}"), input, 3);
+
+  check_exception("The format-spec precision field doesn't contain a value or arg-id", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::L}"), input); // does not require locales present
+#ifndef TEST_HAS_NO_LOCALIZATION
+// TODO FMT Enable with locale testing active
+#  if 0
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+  check(SV("[-42,5, 0, 1,25, 42,5]"), SV("{::L}"), input);
+
+  std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::L}"), input);
+
+  std::locale::global(std::locale::classic());
+#  endif
+#endif // TEST_HAS_NO_LOCALIZATION
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("aAeEfFgG"))
+    check_exception("The format-spec type has a type not supported for a floating-point argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^33::>5}"), input);
+  check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^{}::>5}"), input, 33);
+  check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
+
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^33::>5.2}"), input);
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>5.2}"), input, 33);
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>{}.2}"), input, 33, 5);
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>{}.{}}"), input, 33, 5, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5.2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}.2}"), input, 33);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}.{}}"), input, 33, 5);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception) {
+  std::array input{-42.5l, 0.0l, 1.25l, 42.5l};
+  test_floating_point<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_floating_point<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_floating_point<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// Pointer
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[0x0]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[0x0]     "), SV("{:10}"), input);
+  check(SV("[0x0]*****"), SV("{:*<10}"), input);
+  check(SV("__[0x0]___"), SV("{:_^10}"), input);
+  check(SV("#####[0x0]"), SV("{:#>10}"), input);
+
+  check(SV("[0x0]     "), SV("{:{}}"), input, 10);
+  check(SV("[0x0]*****"), SV("{:*<{}}"), input, 10);
+  check(SV("__[0x0]___"), SV("{:_^{}}"), input, 10);
+  check(SV("#####[0x0]"), SV("{:#>{}}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("_0x0_"), SV("{:_^5n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[  0x0]"), SV("{::5}"), input);
+  check(SV("[0x0**]"), SV("{::*<5}"), input);
+  check(SV("[_0x0_]"), SV("{::_^5}"), input);
+  check(SV("[::0x0]"), SV("{:::>5}"), input);
+
+  check(SV("[  0x0]"), SV("{::{}}"), input, 5);
+  check(SV("[0x0**]"), SV("{::*<{}}"), input, 5);
+  check(SV("[_0x0_]"), SV("{::_^{}}"), input, 5);
+  check(SV("[::0x0]"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("p"))
+    check_exception("The format-spec type has a type not supported for a pointer argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[::0x0]^^^"), SV("{:^^12::>5}"), input);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>5}"), input, 12);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
+
+  check(SV("^^[::0x0]^^^"), SV("{:^^12::>5}"), input);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>5}"), input, 12);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 12);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception) {
+  std::array input{static_cast<void*>(0)};
+  test_pointer<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_pointer<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end()});
+  test_pointer<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// String
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV(R"(["Hello", "world"])"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"(["Hello", "world"]     )"), SV("{:23}"), input);
+  check(SV(R"(["Hello", "world"]*****)"), SV("{:*<23}"), input);
+  check(SV(R"(__["Hello", "world"]___)"), SV("{:_^23}"), input);
+  check(SV(R"(#####["Hello", "world"])"), SV("{:#>23}"), input);
+
+  check(SV(R"(["Hello", "world"]     )"), SV("{:{}}"), input, 23);
+  check(SV(R"(["Hello", "world"]*****)"), SV("{:*<{}}"), input, 23);
+  check(SV(R"(__["Hello", "world"]___)"), SV("{:_^{}}"), input, 23);
+  check(SV(R"(#####["Hello", "world"])"), SV("{:#>{}}"), input, 23);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV(R"(_"Hello", "world"_)"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV(R"([Hello   , world   ])"), SV("{::8}"), input);
+  check(SV(R"([Hello***, world***])"), SV("{::*<8}"), input);
+  check(SV(R"([_Hello__, _world__])"), SV("{::_^8}"), input);
+  check(SV(R"([:::Hello, :::world])"), SV("{:::>8}"), input);
+
+  check(SV(R"([Hello   , world   ])"), SV("{::{}}"), input, 8);
+  check(SV(R"([Hello***, world***])"), SV("{::*<{}}"), input, 8);
+  check(SV(R"([_Hello__, _world__])"), SV("{::_^{}}"), input, 8);
+  check(SV(R"([:::Hello, :::world])"), SV("{:::>{}}"), input, 8);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check(SV(R"([Hel, wor])"), SV("{::.3}"), input);
+
+  check(SV(R"([Hel, wor])"), SV("{::.{}}"), input, 3);
+
+  check_exception("The format-spec precision field doesn't contain a value or arg-id", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s?"))
+    check_exception("The format-spec type has a type not supported for a string argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^25::>8}"), input);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>8}"), input, 25);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
+
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^25::>8}"), input);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>8}"), input, 25);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>8}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 25);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception) {
+  std::array input{STR("Hello"), STR("world")};
+  test_string<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_string<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::greater{}});
+  test_string<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// Handle
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_status(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[0xaaaa, 0x5555, 0xaa55]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[0xaaaa, 0x5555, 0xaa55]     "), SV("{:29}"), input);
+  check(SV("[0xaaaa, 0x5555, 0xaa55]*****"), SV("{:*<29}"), input);
+  check(SV("__[0xaaaa, 0x5555, 0xaa55]___"), SV("{:_^29}"), input);
+  check(SV("#####[0xaaaa, 0x5555, 0xaa55]"), SV("{:#>29}"), input);
+
+  check(SV("[0xaaaa, 0x5555, 0xaa55]     "), SV("{:{}}"), input, 29);
+  check(SV("[0xaaaa, 0x5555, 0xaa55]*****"), SV("{:*<{}}"), input, 29);
+  check(SV("__[0xaaaa, 0x5555, 0xaa55]___"), SV("{:_^{}}"), input, 29);
+  check(SV("#####[0xaaaa, 0x5555, 0xaa55]"), SV("{:#>{}}"), input, 29);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__0xaaaa, 0x5555, 0xaa55___"), SV("{:_^27n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("The format-spec type has a type not supported for a status argument", SV("{::*<7}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("sxX"))
+    check_exception("The format-spec type has a type not supported for a status argument", fmt, input);
+
+  check(SV("[0xaaaa, 0x5555, 0xaa55]"), SV("{::x}"), input);
+  check(SV("[0XAAAA, 0X5555, 0XAA55]"), SV("{::X}"), input);
+  check(SV("[foo, bar, foobar]"), SV("{::s}"), input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[0XAAAA, 0X5555, 0XAA55]^^^"), SV("{:^^29:X}"), input);
+  check(SV("^^[0XAAAA, 0X5555, 0XAA55]^^^"), SV("{:^^{}:X}"), input, 29);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:X}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_status(TestFunction check, ExceptionTest check_exception) {
+  std::array input{status::foo, status::bar, status::foobar};
+  test_status<CharT>(check, check_exception, std::queue{input.begin(), input.end()});
+  test_status<CharT>(check, check_exception, std::priority_queue{input.begin(), input.end(), std::less{}});
+  test_status<CharT>(check, check_exception, std::stack{input.begin(), input.end()});
+}
+
+//
+// Driver
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_tests(TestFunction check, ExceptionTest check_exception) {
+  test_char<CharT>(check, check_exception);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  if (std::same_as<CharT, wchar_t>) // avoid testing twice
+    test_char_to_wchar(check, check_exception);
+#endif
+  test_bool<CharT>(check, check_exception);
+  test_int<CharT>(check, check_exception);
+  test_floating_point<CharT>(check, check_exception);
+  test_pointer<CharT>(check, check_exception);
+  test_string<CharT>(check, check_exception);
+
+  test_status<CharT>(check, check_exception); // Has its own handler with its own parser
+}
+
+#endif // TEST_STD_CONTAINERS_CONTAINER_ADAPTORS_CONTAINER_ADAPTORS_FORMAT_FORMAT_FUNCTIONS_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.vformat.pass.cpp
new file mode 100644
index 0000000..27c52fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.functions.vformat.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// [container.adaptors.format]
+// For each of queue, priority_queue, and stack, the library provides the
+// following formatter specialization where adaptor-type is the name of the
+// template:
+//
+// template<class charT, class T, formattable<charT> Container, class... U>
+//   struct formatter<adaptor-type<T, Container, U...>, charT>
+
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch (const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.pass.cpp
new file mode 100644
index 0000000..8950ece
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/format.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// [container.adaptors.format]
+// For each of queue, priority_queue, and stack, the library provides the
+// following formatter specialization where adaptor-type is the name of the
+// template:
+//
+// template<class charT, class T, formattable<charT> Container, class... U>
+//   struct formatter<adaptor-type<T, Container, U...>, charT>
+
+// template<class FormatContext>
+//   typename FormatContext::iterator
+//     format(maybe-const-adaptor& r, FormatContext& ctx) const;
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <queue>
+#include <stack>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT, class Arg>
+void test_format(StringViewT expected, Arg arg) {
+  using CharT      = typename StringViewT::value_type;
+  using String     = std::basic_string<CharT>;
+  using OutIt      = std::back_insert_iterator<String>;
+  using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+  const std::formatter<Arg, CharT> formatter;
+
+  String result;
+  OutIt out             = std::back_inserter(result);
+  FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class CharT>
+void test_fmt() {
+  std::array input{1, 42, 99, 0};
+  test_format(SV("[1, 42, 99, 0]"), std::queue<int>{input.begin(), input.end()});
+  test_format(SV("[99, 42, 1, 0]"), std::priority_queue<int>{input.begin(), input.end()});
+  test_format(SV("[1, 42, 99, 0]"), std::stack<int>{input.begin(), input.end()});
+}
+
+void test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/parse.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/parse.pass.cpp
new file mode 100644
index 0000000..b620279
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/container.adaptors.format/parse.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// [container.adaptors.format]
+// For each of queue, priority_queue, and stack, the library provides the
+// following formatter specialization where adaptor-type is the name of the
+// template:
+//
+// template<class charT, class T, formattable<charT> Container, class... U>
+//   struct formatter<adaptor-type<T, Container, U...>, charT>
+
+// template<class ParseContext>
+//   constexpr typename ParseContext::iterator
+//     parse(ParseContext& ctx);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <queue>
+#include <stack>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class Arg, class StringViewT>
+constexpr void test_parse(StringViewT fmt) {
+  using CharT    = typename StringViewT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<Arg, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+}
+
+template <class StringViewT>
+constexpr void test_parse(StringViewT fmt) {
+  test_parse<std::queue<int>>(fmt);
+  test_parse<std::priority_queue<int>>(fmt);
+  test_parse<std::stack<int>>(fmt);
+}
+
+template <class CharT>
+constexpr void test_fmt() {
+  test_parse(SV(""));
+  test_parse(SV(":d"));
+
+  test_parse(SV("}"));
+  test_parse(SV(":d}"));
+}
+
+constexpr bool test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_alloc.pass.cpp
new file mode 100644
index 0000000..07b4f46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_alloc.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//     explicit priority_queue(const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct test
+    : public std::priority_queue<T, std::vector<T, test_allocator<T> > >
+{
+    typedef std::priority_queue<T, std::vector<T, test_allocator<T> > > base;
+    typedef typename base::container_type container_type;
+    typedef typename base::value_compare value_compare;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const value_compare& comp, const test_allocator<int>& a)
+        : base(comp, c, a) {}
+    test(const value_compare& comp, const container_type& container,
+        const test_allocator<int>& a) : base(comp, container, a) {}
+#if TEST_STD_VER >= 11
+    test(const value_compare& comp, container_type&& container,
+         const test_allocator<int>& a) : base(comp, std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    test<int> q((test_allocator<int>(3)));
+    assert(q.c.get_allocator() == test_allocator<int>(3));
+    assert(q.c.size() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_alloc.pass.cpp
new file mode 100644
index 0000000..87b9ada
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_alloc.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//     priority_queue(const Compare& comp, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct test
+    : public std::priority_queue<T, std::vector<T, test_allocator<T> > >
+{
+    typedef std::priority_queue<T, std::vector<T, test_allocator<T> > > base;
+    typedef typename base::container_type container_type;
+    typedef typename base::value_compare value_compare;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const value_compare& compare, const test_allocator<int>& a)
+        : base(compare, a) {}
+    test(const value_compare& compare, const container_type& container,
+        const test_allocator<int>& a) : base(compare, container, a) {}
+#if TEST_STD_VER >= 11
+    test(const value_compare& compare, container_type&& container,
+         const test_allocator<int>& a) : base(compare, std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    test<int> q(std::less<int>(), test_allocator<int>(3));
+    assert(q.c.get_allocator() == test_allocator<int>(3));
+    assert(q.c.size() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_cont_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_cont_alloc.pass.cpp
new file mode 100644
index 0000000..afec771
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_cont_alloc.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//     priority_queue(const Compare& comp, const container_type& c,
+//                    const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+template <class T>
+struct test
+    : public std::priority_queue<T, std::vector<T, test_allocator<T> > >
+{
+    typedef std::priority_queue<T, std::vector<T, test_allocator<T> > > base;
+    typedef typename base::container_type container_type;
+    typedef typename base::value_compare value_compare;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const value_compare& compare, const test_allocator<int>& a)
+        : base(compare, a) {}
+    test(const value_compare& compare, const container_type& container,
+        const test_allocator<int>& a) : base(compare, container, a) {}
+#if TEST_STD_VER >= 11 // testing rvalue constructor
+    test(const value_compare& compare, container_type&& container,
+         const test_allocator<int>& a) : base(compare, std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    typedef std::vector<int, test_allocator<int> > C;
+    C v = make<C>(5);
+    test<int> q(std::less<int>(), v, test_allocator<int>(3));
+    assert(q.c.get_allocator() == test_allocator<int>(3));
+    assert(q.size() == 5);
+    assert(q.top() == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_rcont_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_rcont_alloc.pass.cpp
new file mode 100644
index 0000000..7ddb5f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_comp_rcont_alloc.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//     priority_queue(const Compare& comp, container_type&& c,
+//                    const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+template <class T>
+struct test
+    : public std::priority_queue<T, std::vector<T, test_allocator<T> > >
+{
+    typedef std::priority_queue<T, std::vector<T, test_allocator<T> > > base;
+    typedef typename base::container_type container_type;
+    typedef typename base::value_compare value_compare;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const value_compare& compare, const test_allocator<int>& a)
+        : base(compare, a) {}
+    test(const value_compare& compare, const container_type& container,
+        const test_allocator<int>& a) : base(compare, container, a) {}
+#if TEST_STD_VER >= 11 // testing rvalue ctor
+    test(const value_compare& compare, container_type&& container,
+         const test_allocator<int>& a) : base(compare, std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    typedef std::vector<int, test_allocator<int> > C;
+    test<int> q(std::less<int>(), make<C>(5), test_allocator<int>(3));
+    assert(q.c.get_allocator() == test_allocator<int>(3));
+    assert(q.size() == 5);
+    assert(q.top() == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_copy_alloc.pass.cpp
new file mode 100644
index 0000000..77c9989
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_copy_alloc.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//     priority_queue(const priority_queue& q, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct test
+    : public std::priority_queue<T, std::vector<T, test_allocator<T> > >
+{
+    typedef std::priority_queue<T, std::vector<T, test_allocator<T> > > base;
+    typedef typename base::container_type container_type;
+    typedef typename base::value_compare value_compare;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const value_compare& compare, const test_allocator<int>& a)
+        : base(compare, c, a) {}
+    test(const value_compare& compare, const container_type& container,
+         const test_allocator<int>& a) : base(compare, container, a) {}
+    test(const test& q, const test_allocator<int>& a) : base(q, a) {}
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    test<int> qo(std::less<int>(),
+                      make<std::vector<int, test_allocator<int> > >(5),
+                      test_allocator<int>(2));
+    test<int> q(qo, test_allocator<int>(6));
+    assert(q.size() == 5);
+    assert(q.c.get_allocator() == test_allocator<int>(6));
+    assert(q.top() == int(4));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..e413cb5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_alloc.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template<class T, class Cont, class Comp = std::less<T> >
+struct PQ : std::priority_queue<T, Cont, Comp> {
+    typedef std::priority_queue<T, Cont, Comp> base;
+
+    template<class It, class Alloc>
+    explicit PQ(It first, It last, const Alloc& a) : base(first, last, a) {}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    typedef test_allocator<int> Alloc;
+    PQ<int, std::vector<int, Alloc> > q(a, a+7, Alloc(2));
+    assert(q.size() == 7);
+    assert(q.top() == 8);
+    assert(q.c.get_allocator() == Alloc(2));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_alloc.pass.cpp
new file mode 100644
index 0000000..5bea931
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_alloc.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare& comp, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+#include <functional>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template<class T, class Cont, class Comp = std::less<T> >
+struct PQ : std::priority_queue<T, Cont, Comp> {
+    typedef std::priority_queue<T, Cont, Comp> base;
+
+    template<class It, class Alloc>
+    explicit PQ(It first, It last, const Comp& compare, const Alloc& a) : base(first, last, compare, a) {}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    typedef test_allocator<int> Alloc;
+    PQ<int, std::vector<int, Alloc>, std::greater<int> > q(a, a+7, std::greater<int>(), Alloc(2));
+    assert(q.size() == 7);
+    assert(q.top() == 0);
+    assert(q.c.get_allocator() == Alloc(2));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_cont_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_cont_alloc.pass.cpp
new file mode 100644
index 0000000..1a7288e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_cont_alloc.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last,
+//                  const Compare& comp, const Container& c, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template<class T, class Cont, class Comp = std::less<T> >
+struct PQ : std::priority_queue<T, Cont, Comp> {
+    typedef std::priority_queue<T, Cont, Comp> base;
+
+    template<class It, class Alloc>
+    explicit PQ(It first, It last, const Comp& compare, const Cont& v, const Alloc& a) : base(first, last, compare, v, a) {}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    typedef test_allocator<int> Alloc;
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    std::vector<int, Alloc> v(a, a+3);
+    PQ<int, std::vector<int, Alloc> > q(a+3, a+7, std::less<int>(), v, Alloc(2));
+    assert(q.size() == 7);
+    assert(q.top() == 8);
+    assert(q.c.get_allocator() == Alloc(2));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_rcont_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_rcont_alloc.pass.cpp
new file mode 100644
index 0000000..31595f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_iter_iter_comp_rcont_alloc.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last,
+//                  const Compare& comp, Container&& c, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+
+template<class T, class Cont, class Comp = std::less<T> >
+struct PQ : std::priority_queue<T, Cont, Comp> {
+    typedef std::priority_queue<T, Cont, Comp> base;
+
+    template<class It, class Alloc>
+    explicit PQ(It first, It last, const Comp& compare, Cont&& v, const Alloc& a) : base(first, last, compare, std::move(v), a) {}
+
+    using base::c;
+};
+
+int main(int, char**)
+{
+    using Alloc = test_allocator<MoveOnly>;
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    PQ<MoveOnly, std::vector<MoveOnly, Alloc>> q(
+        a+3, a+7, std::less<MoveOnly>(),
+        std::vector<MoveOnly, Alloc>(a, a+3), Alloc(2));
+    assert(q.size() == 7);
+    assert(q.top() == MoveOnly(8));
+    assert(q.c.get_allocator() == Alloc(2));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_move_alloc.pass.cpp
new file mode 100644
index 0000000..c1c0580
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons.alloc/ctor_move_alloc.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class Alloc>
+//     priority_queue(priority_queue&& q, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+#include "test_allocator.h"
+
+template <class T>
+struct test
+    : public std::priority_queue<T, std::vector<T, test_allocator<T> > >
+{
+    typedef std::priority_queue<T, std::vector<T, test_allocator<T> > > base;
+    typedef typename base::container_type container_type;
+    typedef typename base::value_compare value_compare;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const value_compare& compare, const test_allocator<int>& a)
+        : base(compare, c, a) {}
+    test(const value_compare& compare, const container_type& container,
+        const test_allocator<int>& a) : base(compare, container, a) {}
+    test(const value_compare& compare, container_type&& container,
+         const test_allocator<int>& a) : base(compare, std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+
+    using base::c;
+};
+
+
+int main(int, char**)
+{
+    test<MoveOnly> qo(std::less<MoveOnly>(),
+                      make<std::vector<MoveOnly, test_allocator<MoveOnly> > >(5),
+                      test_allocator<MoveOnly>(2));
+    test<MoveOnly> q(std::move(qo), test_allocator<MoveOnly>(6));
+    assert(q.size() == 5);
+    assert(q.c.get_allocator() == test_allocator<MoveOnly>(6));
+    assert(q.top() == MoveOnly(4));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..57f287c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue& operator=(const priority_queue&) = default;
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <queue>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::priority_queue<operator_hijacker> pqo;
+  std::priority_queue<operator_hijacker> pq;
+  pq = pqo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_copy.pass.cpp
new file mode 100644
index 0000000..8bbee85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_copy.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue& operator=(const priority_queue&) = default;
+
+#include <queue>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::vector<int> v = make<std::vector<int> >(5);
+    std::priority_queue<int, std::vector<int>, std::greater<int> > qo(std::greater<int>(), v);
+    std::priority_queue<int, std::vector<int>, std::greater<int> > q;
+    q = qo;
+    assert(q.size() == 5);
+    assert(q.top() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_move.pass.cpp
new file mode 100644
index 0000000..84c3dea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/assign_move.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// priority_queue& operator=(priority_queue&& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+
+int main(int, char**)
+{
+    std::priority_queue<MoveOnly> qo(std::less<MoveOnly>(), make<std::vector<MoveOnly> >(5));
+    std::priority_queue<MoveOnly> q;
+    q = std::move(qo);
+    assert(q.size() == 5);
+    assert(q.top() == MoveOnly(4));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp.pass.cpp
new file mode 100644
index 0000000..5c2fc5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// explicit priority_queue(const Compare& comp);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    typedef std::vector<int, limited_allocator<int, 10> > Container;
+    typedef std::less<int> Compare;
+    typedef std::priority_queue<int, Container> Q;
+    Q q((Compare()));
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    assert(q.size() == 2);
+    assert(q.top() == 2);
+
+#if TEST_STD_VER >= 11
+    static_assert(!test_convertible<Q, const Compare&>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_container.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_container.pass.cpp
new file mode 100644
index 0000000..07c50e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_container.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue(const Compare& comp, const Container& c);
+
+#include <queue>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    typedef std::vector<int> Container;
+    typedef std::greater<int> Compare;
+    typedef std::priority_queue<int, Container, Compare> Q;
+    Container v = make<Container>(5);
+    Q q(Compare(), v);
+    assert(q.size() == 5);
+    assert(q.top() == 0);
+
+#if TEST_STD_VER >= 11
+    // It should be explicit, so not convertible before C++20.
+    static_assert(test_convertible<Q, const Compare&, const Container&>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_rcontainer.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_rcontainer.pass.cpp
new file mode 100644
index 0000000..d555eca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_comp_rcontainer.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// explicit priority_queue(const Compare& comp, Container&& c); // before C++20
+// priority_queue(const Compare& comp, Container&& c);          // C++20
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_convertible.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+int main(int, char**)
+{
+    typedef std::vector<MoveOnly> Container;
+    typedef std::less<MoveOnly> Compare;
+    typedef std::priority_queue<MoveOnly> Q;
+    Q q(Compare(), make<Container>(5));
+    assert(q.size() == 5);
+    assert(q.top() == MoveOnly(4));
+
+    static_assert(test_convertible<Q, const Compare&, Container&&>(), "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_copy.pass.cpp
new file mode 100644
index 0000000..5ab4337
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_copy.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue(const priority_queue&) = default;
+
+#include <queue>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::vector<int> v = make<std::vector<int> >(5);
+    std::priority_queue<int, std::vector<int>, std::greater<int> > qo(std::greater<int>(), v);
+    std::priority_queue<int, std::vector<int>, std::greater<int> > q = qo;
+    assert(q.size() == 5);
+    assert(q.top() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_default.pass.cpp
new file mode 100644
index 0000000..e483763
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_default.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// explicit priority_queue(const Compare& x = Compare(), Container&& = Container()); // before C++20
+// priority_queue() : priority_queue(Compare()) {}                                   // C++20
+// explicit priority_queue(const Compare& x) : priority_queue(x, Container()) {}     // C++20
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    typedef std::vector<int, limited_allocator<int, 10> > Container;
+    typedef std::priority_queue<int, Container> Q;
+    Q q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    assert(q.size() == 2);
+    assert(q.top() == 2);
+
+#if TEST_STD_VER >= 11
+    // It should be explicit, so not convertible before C++20.
+    static_assert(test_convertible<Q>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_constraint.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_constraint.compile.pass.cpp
new file mode 100644
index 0000000..283cbc0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_constraint.compile.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare& = Compare());
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare&, const Container&);
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare&, Container&&);
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Alloc&);
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare&, const Alloc&);
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare&, const Container&, const Alloc&);
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare&, Container&&, const Alloc&);
+
+#include <queue>
+#include <type_traits>
+#include <vector>
+
+// Sanity-check that std::vector is constructible from two ints...
+static_assert( std::is_constructible<std::vector<int>,         int*, int*>::value, "");
+static_assert( std::is_constructible<std::vector<int>,         int , int >::value, "");
+
+// ...but std::priority_queue is not.
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int >::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::less<int>>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::less<int>>::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::less<int>, std::vector<int>>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::less<int>, std::vector<int>>::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::less<int>, std::vector<int>&>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::less<int>, std::vector<int>&>::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::allocator<int>>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::allocator<int>>::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::less<int>, std::allocator<int>>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::less<int>, std::allocator<int>>::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::less<int>, std::vector<int>, std::allocator<int>>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::less<int>, std::vector<int>, std::allocator<int>>::value, "");
+
+static_assert( std::is_constructible<std::priority_queue<int>, int*, int*, std::less<int>, std::vector<int>&, std::allocator<int>>::value, "");
+static_assert(!std::is_constructible<std::priority_queue<int>, int , int , std::less<int>, std::vector<int>&, std::allocator<int>>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter.pass.cpp
new file mode 100644
index 0000000..c3838fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last);
+
+#include <queue>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    int* an = a + sizeof(a)/sizeof(a[0]);
+    std::priority_queue<int> q(a, an);
+    assert(q.size() == static_cast<std::size_t>(an - a));
+    assert(q.top() == 8);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp.pass.cpp
new file mode 100644
index 0000000..0ae3d10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last, const Compare& comp);
+
+#include <queue>
+#include <cassert>
+#include <functional>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    int* an = a + sizeof(a)/sizeof(a[0]);
+    std::priority_queue<int, std::vector<int>, std::greater<int> >
+        q(a, an, std::greater<int>());
+    assert(q.size() == static_cast<std::size_t>(an - a));
+    assert(q.top() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp_cont.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp_cont.pass.cpp
new file mode 100644
index 0000000..adba98a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp_cont.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last,
+//                  const Compare& comp, const container_type& c);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    const int n = sizeof(a)/sizeof(a[0]);
+    std::vector<int> v(a, a+n/2);
+    std::priority_queue<int> q(a+n/2, a+n, std::less<int>(), v);
+    assert(q.size() == n);
+    assert(q.top() == 8);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp_rcont.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp_rcont.pass.cpp
new file mode 100644
index 0000000..e09cb68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_iter_iter_comp_rcont.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class InputIterator>
+//   priority_queue(InputIterator first, InputIterator last,
+//                  const Compare& comp, container_type&& c);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    int a[] = {3, 5, 2, 0, 6, 8, 1};
+    const int n = sizeof(a)/sizeof(a[0]);
+    std::priority_queue<MoveOnly> q(a+n/2, a+n,
+                                    std::less<MoveOnly>(),
+                                    std::vector<MoveOnly>(a, a+n/2));
+    assert(q.size() == n);
+    assert(q.top() == MoveOnly(8));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_move.pass.cpp
new file mode 100644
index 0000000..88a8573
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/ctor_move.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// priority_queue(priority_queue&& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+
+int main(int, char**)
+{
+    std::priority_queue<MoveOnly> qo(std::less<MoveOnly>(), make<std::vector<MoveOnly> >(5));
+    std::priority_queue<MoveOnly> q = std::move(qo);
+    assert(q.size() == 5);
+    assert(q.top() == MoveOnly(4));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.fail.cpp
new file mode 100644
index 0000000..7dd0e25
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.fail.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <queue>
+#include <deque>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+    {
+//  queue(Compare, Container, const Alloc);
+//  The '45' is not an allocator
+    std::priority_queue pri(std::greater<int>(), std::deque<int>({1,2,3}), 45);  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
+    }
+
+    {
+//  queue(const queue&, const Alloc&);
+//  The '45' is not an allocator
+    std::priority_queue<int> source;
+    std::priority_queue pri(source, 45);  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
+    }
+
+    {
+//  priority_queue(Iter, Iter, Comp)
+//  int is not an iterator
+    std::priority_queue pri(15, 17, std::greater<double>());  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
+    }
+
+    {
+//  priority_queue(Iter, Iter, Comp, Container)
+//  float is not an iterator
+    std::priority_queue pri(23.f, 2.f, std::greater<float>(), std::deque<float>());   // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
+    }
+
+//  Test the implicit deduction guides
+    {
+//  priority_queue (allocator &)
+    std::priority_queue pri((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'priority_queue'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      stack<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.pass.cpp
new file mode 100644
index 0000000..7dbeeee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/deduct.pass.cpp
@@ -0,0 +1,360 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class Compare, class Container>
+// priority_queue(Compare, Container)
+//     -> priority_queue<typename Container::value_type, Container, Compare>;
+//
+// template<class InputIterator,
+//          class Compare = less<typename iterator_traits<InputIterator>::value_type>,
+//          class Container = vector<typename iterator_traits<InputIterator>::value_type>>
+// priority_queue(InputIterator, InputIterator, Compare = Compare(), Container = Container())
+//     -> priority_queue<typename iterator_traits<InputIterator>::value_type, Container, Compare>;
+//
+// template<class Compare, class Container, class Allocator>
+// priority_queue(Compare, Container, Allocator)
+//     -> priority_queue<typename Container::value_type, Container, Compare>;
+
+
+#include <queue>
+#include <vector>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+    std::vector<int> v{0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::priority_queue pri(std::greater<int>(), v); // priority_queue(Compare, Container)
+
+    static_assert(std::is_same_v<decltype(pri), std::priority_queue<int, std::vector<int>, std::greater<int>>>, "");
+    assert(pri.size() == v.size());
+    assert(pri.top() == 0);
+    }
+
+    {
+    std::vector<long, test_allocator<long>> v{10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
+    std::priority_queue pri(std::greater<long>(), v, test_allocator<long>(2)); // priority_queue(Compare, Container, Allocator)
+
+    static_assert(std::is_same_v<decltype(pri),
+                                 std::priority_queue<long, std::vector<long, test_allocator<long>>, std::greater<long>>>, "");
+    assert(pri.size() == v.size());
+    assert(pri.top() == 10);
+    }
+
+    {
+    std::vector<short> v{10, 11, 12, 13, 14, 15, 28, 17, 18, 19 };
+    std::priority_queue pri(v.begin(), v.end()); // priority_queue(Iter, Iter)
+
+    static_assert(std::is_same_v<decltype(pri), std::priority_queue<short>>, "");
+    assert(pri.size() == v.size());
+    assert(pri.top() == 28);
+    }
+
+    {
+    std::vector<double> v{10, 11, 12, 13, 6, 15, 28, 17, 18, 19 };
+    std::priority_queue pri(v.begin(), v.end(), std::greater<double>()); // priority_queue(Iter, Iter, Comp)
+
+    static_assert(std::is_same_v<decltype(pri), std::priority_queue<double, std::vector<double>, std::greater<double>>>, "");
+    assert(pri.size() == v.size());
+    assert(pri.top() == 6);
+    }
+
+    {
+    std::vector<double> v{10, 6, 15, 28, 4, 18, 19 };
+    std::deque<double> deq;
+    std::priority_queue pri(v.begin(), v.end(), std::greater<double>(), deq); // priority_queue(Iter, Iter, Comp, Container)
+
+    static_assert(std::is_same_v<decltype(pri), std::priority_queue<double, std::deque<double>, std::greater<double>>>, "");
+    assert(pri.size() == v.size());
+    assert(pri.top() == 4);
+    }
+
+//  Test the implicit deduction guides
+    {
+//  We don't expect this one to work - no way to implicitly get value_type
+//  std::priority_queue pri(std::allocator<int>()); // queue (allocator &)
+    }
+
+    {
+    std::priority_queue<float> source;
+    std::priority_queue pri(source); // priority_queue(priority_queue &)
+    static_assert(std::is_same_v<decltype(pri)::value_type, float>, "");
+    static_assert(std::is_same_v<decltype(pri)::container_type, std::vector<float>>, "");
+    assert(pri.size() == 0);
+    }
+
+    {
+        typedef short T;
+        typedef std::greater<T> Comp;
+        typedef test_allocator<T> Alloc;
+        typedef std::deque<T, Alloc> Cont;
+        typedef test_allocator<int> ConvertibleToAlloc;
+        static_assert(std::uses_allocator_v<Cont, ConvertibleToAlloc> &&
+                      !std::is_same_v<typename Cont::allocator_type, ConvertibleToAlloc>);
+
+        {
+        Comp comp;
+        Cont cont;
+        std::priority_queue pri(comp, cont, Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Comp comp;
+        Cont cont;
+        std::priority_queue pri(comp, cont, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Comp comp;
+        Cont cont;
+        std::priority_queue pri(comp, std::move(cont), Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Comp comp;
+        Cont cont;
+        std::priority_queue pri(comp, std::move(cont), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+    }
+
+    {
+        typedef short T;
+        typedef signed char ConvertibleToT;
+        typedef std::greater<T> Comp;
+        typedef test_allocator<T> Alloc;
+        typedef std::deque<T, Alloc> Cont;
+        typedef test_allocator<int> ConvertibleToAlloc;
+        static_assert(std::uses_allocator_v<Cont, ConvertibleToAlloc> &&
+                      !std::is_same_v<typename Cont::allocator_type, ConvertibleToAlloc>);
+
+        {
+        std::priority_queue<T, Cont, Comp> source;
+        std::priority_queue pri(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        std::priority_queue<T, Cont, Comp> source;
+        std::priority_queue pri(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        std::priority_queue<T, Cont, Comp> source;
+        std::priority_queue pri(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        std::priority_queue<T, Cont, Comp> source;
+        std::priority_queue pri(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        std::priority_queue pri(Comp(), cont, Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        std::priority_queue pri(Comp(), cont, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        std::priority_queue pri(Comp(), std::move(cont), Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        std::priority_queue pri(Comp(), std::move(cont), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        T a[2] = {};
+        std::priority_queue pri(a, a+2, Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, std::vector<T, Alloc>>>);
+        }
+
+        {
+        T a[2] = {};
+        std::priority_queue pri(a, a+2, Comp(), Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, std::vector<T, Alloc>, Comp>>);
+        }
+
+        {
+        Cont cont;
+        ConvertibleToT a[2] = {};
+        std::priority_queue pri(a, a+2, Comp(), cont, Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        ConvertibleToT a[2] = {};
+        std::priority_queue pri(a, a+2, Comp(), cont, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        ConvertibleToT a[2] = {};
+        std::priority_queue pri(a, a+2, Comp(), std::move(cont), Alloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+
+        {
+        Cont cont;
+        ConvertibleToT a[2] = {};
+        std::priority_queue pri(a, a+2, Comp(), std::move(cont), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(pri), std::priority_queue<T, Cont, Comp>>);
+        }
+    }
+
+    // Deduction guides should be SFINAE'd away when given:
+    // - "bad" input iterators (that is, a type not qualifying as an input
+    //   iterator);
+    // - a bad allocator;
+    // - an allocator instead of a comparator;
+    // - an allocator instead of a container;
+    // - an allocator and a container that uses a different allocator.
+    {
+        using Comp = std::less<int>;
+        using Cont = std::vector<int>;
+        using Alloc = std::allocator<int>;
+        using Iter = int*;
+
+        // The only requirement in the Standard is that integral types cannot be
+        // considered input iterators, beyond that it is unspecified.
+        using BadIter = int;
+#ifdef _LIBCPP_VERSION
+        struct OutputIter {
+          using iterator_category = std::output_iterator_tag;
+          using value_type = void;
+          using difference_type = void;
+          using pointer = void;
+          using reference = void;
+
+          const OutputIter& operator*() const { return *this; }
+          const OutputIter& operator++() { return *this; }
+          OutputIter operator++(int) const { return *this; }
+        };
+#endif // _LIBCPP_VERSION
+
+        struct BadAlloc {};
+        using AllocAsComp = Alloc;
+        using AllocAsCont = Alloc;
+        using DiffAlloc = test_allocator<int>;
+
+        // (iter, iter)
+        //
+        // Cannot deduce from (BAD_iter, BAD_iter)
+        static_assert(SFINAEs_away<std::priority_queue, BadIter, BadIter>);
+        // Note: (OutputIter, OutputIter) is interpreted as (comp, cont) and fails on accessing
+        // non-existent typedefs in `OutputIter` (as if it were a container). There is no
+        // requirement to SFINAE away bad containers.
+
+        // (iter, iter, comp)
+        //
+        // Cannot deduce from (BAD_iter, BAD_iter, comp)
+        static_assert(SFINAEs_away<std::priority_queue, BadIter, BadIter, Comp>);
+        LIBCPP_STATIC_ASSERT(SFINAEs_away<std::priority_queue, OutputIter, OutputIter, Comp>);
+        // Note: (iter, iter, ALLOC_as_comp) is allowed -- it just calls (iter, iter, alloc).
+
+        // (iter, iter, comp, cont)
+        //
+        // Cannot deduce from (BAD_iter, BAD_iter, comp, cont)
+        static_assert(SFINAEs_away<std::priority_queue, BadIter, BadIter, Comp, Cont>);
+        LIBCPP_STATIC_ASSERT(SFINAEs_away<std::priority_queue, OutputIter, OutputIter, Comp, Cont>);
+        // Cannot deduce from (iter, iter, ALLOC_as_comp, cont)
+        static_assert(SFINAEs_away<std::priority_queue, Iter, Iter, AllocAsComp, Cont>);
+        // Note: (iter, iter, comp, ALLOC_as_cont) is allowed -- it just calls (iter, iter, comp,
+        // alloc).
+
+        // (iter, iter, alloc)
+        //
+        // Cannot deduce from (BAD_iter, BAD_iter, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, BadIter, BadIter, Alloc>);
+        LIBCPP_STATIC_ASSERT(SFINAEs_away<std::priority_queue, OutputIter, OutputIter, Alloc>);
+        // Note: (iter, iter, BAD_alloc) is interpreted as (iter, iter, comp) instead and fails upon
+        // instantiation. There is no requirement to SFINAE away bad comparators.
+
+        // (iter, iter, comp, alloc)
+        //
+        // Cannot deduce from (iter, iter, ALLOC_as_comp, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Iter, Iter, AllocAsComp, Alloc>);
+        // Note: (iter, iter, comp, BAD_alloc) is interpreted as (iter, iter, comp, cont) instead
+        // and fails upon instantiation. There is no requirement to SFINAE away bad containers.
+
+        // (iter, iter, comp, cont, alloc)
+        //
+        // Cannot deduce from (BAD_iter, BAD_iter, comp, cont, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, BadIter, BadIter, Comp, Cont, Alloc>);
+        LIBCPP_STATIC_ASSERT(
+            SFINAEs_away<std::priority_queue, OutputIter, OutputIter, Comp, Cont, Alloc>);
+        // Cannot deduce from (iter, iter, ALLOC_as_comp, cont, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Iter, Iter, AllocAsComp, Cont, Alloc>);
+        // Cannot deduce from (iter, iter, comp, ALLOC_as_cont, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Iter, Iter, Comp, AllocAsCont, Alloc>);
+        // Cannot deduce from (iter, iter, comp, cont, BAD_alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Iter, Iter, Comp, Cont, BadAlloc>);
+        // Cannot deduce from (iter, iter, comp, cont, DIFFERENT_alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Iter, Iter, Comp, Cont, DiffAlloc>);
+
+        // (comp, alloc)
+        //
+        // Cannot deduce from (ALLOC_as_comp, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, AllocAsComp, Alloc>);
+        // Cannot deduce from (comp, BAD_alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Comp, BadAlloc>);
+
+        // (comp, cont, alloc)
+        //
+        // Cannot deduce from (ALLOC_as_comp, cont, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, AllocAsComp, Cont, Alloc>);
+        // Cannot deduce from (comp, ALLOC_as_cont, alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Comp, AllocAsCont, Alloc>);
+        // Cannot deduce from (comp, cont, BAD_alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Comp, Cont, BadAlloc>);
+        // Cannot deduce from (comp, cont, DIFFERENT_alloc)
+        static_assert(SFINAEs_away<std::priority_queue, Comp, Cont, DiffAlloc>);
+
+        // (comp, cont)
+        //
+        // Cannot deduce from (ALLOC_as_comp, cont)
+        static_assert(SFINAEs_away<std::priority_queue, AllocAsComp, Cont>);
+        // Cannot deduce from (comp, ALLOC_as_cont)
+        static_assert(SFINAEs_away<std::priority_queue, Comp, AllocAsCont>);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..80af575
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/default_noexcept.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// priority_queue()
+//        noexcept(is_nothrow_default_constructible<container_type>::value &&
+//                 is_nothrow_default_constructible<Compare>::value);
+
+// This tests a conforming extension
+
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::priority_queue<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..71e806c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// ~priority_queue() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::priority_queue<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..b24a5e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue& operator=(priority_queue&& c)
+//     noexcept(is_nothrow_move_assignable<container_type>::value &&
+//              is_nothrow_move_assignable<Compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::priority_queue<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..582556c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.cons/move_noexcept.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// priority_queue(priority_queue&&)
+//        noexcept(is_nothrow_move_constructible<container_type>::value &&
+//                 is_nothrow_move_constructible<Compare>::value);
+
+// This tests a conforming extension
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::priority_queue<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/emplace.pass.cpp
new file mode 100644
index 0000000..4d2c716
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/emplace.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// priority_queue();
+
+// template <class... Args> void emplace(Args&&... args);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+
+int main(int, char**)
+{
+    std::priority_queue<Emplaceable> q;
+    q.emplace(1, 2.5);
+    assert(q.top() == Emplaceable(1, 2.5));
+    q.emplace(3, 4.5);
+    assert(q.top() == Emplaceable(3, 4.5));
+    q.emplace(2, 3.5);
+    assert(q.top() == Emplaceable(3, 4.5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/empty.pass.cpp
new file mode 100644
index 0000000..9629bd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/empty.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// bool empty() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q;
+    assert(q.empty());
+    q.push(1);
+    assert(!q.empty());
+    q.pop();
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/empty.verify.cpp
new file mode 100644
index 0000000..7976b96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// class priority_queue
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <queue>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/pop.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/pop.pass.cpp
new file mode 100644
index 0000000..fcba832
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/pop.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// void pop();
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q;
+    q.push(1);
+    assert(q.top() == 1);
+    q.push(3);
+    assert(q.top() == 3);
+    q.push(2);
+    assert(q.top() == 3);
+    q.pop();
+    assert(q.top() == 2);
+    q.pop();
+    assert(q.top() == 1);
+    q.pop();
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/push.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/push.pass.cpp
new file mode 100644
index 0000000..039087c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/push.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// void push(const value_type& v);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q;
+    q.push(1);
+    assert(q.top() == 1);
+    q.push(3);
+    assert(q.top() == 3);
+    q.push(2);
+    assert(q.top() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/push_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/push_rvalue.pass.cpp
new file mode 100644
index 0000000..2f6e7a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/push_rvalue.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// priority_queue();
+
+// void push(value_type&& v);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    std::priority_queue<MoveOnly> q;
+    q.push(1);
+    assert(q.top() == 1);
+    q.push(3);
+    assert(q.top() == 3);
+    q.push(2);
+    assert(q.top() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/size.pass.cpp
new file mode 100644
index 0000000..6fa2127
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/size.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// size_type size() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    assert(q.size() == 1);
+    q.pop();
+    assert(q.size() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/swap.pass.cpp
new file mode 100644
index 0000000..295eaf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/swap.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// void swap(priority_queue& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q1;
+    std::priority_queue<int> q2;
+    q1.push(1);
+    q1.push(3);
+    q1.push(2);
+    q1.swap(q2);
+    assert(q1.empty());
+    assert(q2.size() == 3);
+    assert(q2.top() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/top.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/top.pass.cpp
new file mode 100644
index 0000000..72153bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.members/top.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// const_reference top() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q;
+    q.push(1);
+    assert(q.top() == 1);
+    q.push(3);
+    assert(q.top() == 3);
+    q.push(2);
+    assert(q.top() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.special/swap.pass.cpp
new file mode 100644
index 0000000..1f5b86d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.special/swap.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// priority_queue();
+
+// template <class T, class Container, class Compare>
+//   void swap(priority_queue<T, Container, Compare>& x,
+//             priority_queue<T, Container, Compare>& y);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::priority_queue<int> q1;
+    std::priority_queue<int> q2;
+    q1.push(1);
+    q1.push(3);
+    q1.push(2);
+    swap(q1, q2);
+    assert(q1.empty());
+    assert(q2.size() == 3);
+    assert(q2.top() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..579ec0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/priqueue.special/swap_noexcept.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// void swap(priority_queue& c)
+//     noexcept(__is_nothrow_swappable<container_type>::value &&
+//              __is_nothrow_swappable<Compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <queue>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::priority_queue<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/types.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/types.compile.fail.cpp
new file mode 100644
index 0000000..244028e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/types.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container = vector<T>,
+//           class Compare = less<typename Container::value_type>>
+// class priority_queue
+// {
+// public:
+//     typedef Container                                container_type;
+//     typedef typename container_type::value_type      value_type;
+//     typedef typename container_type::reference       reference;
+//     typedef typename container_type::const_reference const_reference;
+//     typedef typename container_type::size_type       size_type;
+//
+// protected:
+//     container_type c;
+//     Compare comp;
+
+#include <queue>
+#include <cassert>
+#include <type_traits>
+
+int main(int, char**)
+{
+//  LWG#2566 says that the first template param must match the second one's value type
+    std::priority_queue<double, std::deque<int>> t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/types.pass.cpp
new file mode 100644
index 0000000..fb801d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/priority.queue/types.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container = vector<T>,
+//           class Compare = less<typename Container::value_type>>
+// class priority_queue
+// {
+// public:
+//     typedef Container                                container_type;
+//     typedef Compare                                  value_compare; // LWG#2684
+//     typedef typename container_type::value_type      value_type;
+//     typedef typename container_type::reference       reference;
+//     typedef typename container_type::const_reference const_reference;
+//     typedef typename container_type::size_type       size_type;
+//
+// protected:
+//     container_type c;
+//     Compare comp;
+
+#include <queue>
+#include <cassert>
+#include <deque>
+#include <functional>
+#include <memory>
+#include <type_traits>
+#include <vector>
+
+#include "test_macros.h"
+
+struct test
+    : private std::priority_queue<int>
+{
+    test()
+    {
+        c.push_back(1);
+        assert(comp(1, 2));
+    }
+};
+
+struct C
+{
+    typedef int value_type;
+    typedef int& reference;
+    typedef const int& const_reference;
+    typedef int size_type;
+};
+
+int main(int, char**)
+{
+    static_assert(( std::is_same<std::priority_queue<int>::container_type, std::vector<int> >::value), "");
+    static_assert(( std::is_same<std::priority_queue<int, std::deque<int> >::container_type, std::deque<int> >::value), "");
+    static_assert(( std::is_same<std::priority_queue<int, std::deque<int> >::value_type, int>::value), "");
+    static_assert(( std::is_same<std::priority_queue<int>::reference, std::vector<int>::reference>::value), "");
+    static_assert(( std::is_same<std::priority_queue<int>::const_reference, std::vector<int>::const_reference>::value), "");
+    static_assert(( std::is_same<std::priority_queue<int>::size_type, std::vector<int>::size_type>::value), "");
+    static_assert(( std::is_same<std::priority_queue<int>::value_compare, std::less<int> >::value), "");
+    static_assert(( std::is_same<std::priority_queue<int, std::deque<int> >::value_compare, std::less<int> >::value), "");
+    static_assert(( std::is_same<std::priority_queue<int, std::deque<int>, std::greater<int> >::value_compare, std::greater<int> >::value), "");
+    static_assert(( std::uses_allocator<std::priority_queue<int>, std::allocator<int> >::value), "");
+    static_assert((!std::uses_allocator<std::priority_queue<int, C>, std::allocator<int> >::value), "");
+    test t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_alloc.pass.cpp
new file mode 100644
index 0000000..1972560
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_alloc.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//   explicit queue(const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+struct test
+    : private std::queue<int, std::deque<int, test_allocator<int> > >
+{
+    typedef std::queue<int, std::deque<int, test_allocator<int> > > base;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const container_type& container, const test_allocator<int>& a) : base(container, a) {}
+#if TEST_STD_VER >= 11
+    test(container_type&& container, const test_allocator<int>& a) : base(std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+};
+
+int main(int, char**)
+{
+    test q(test_allocator<int>(3));
+    assert(q.get_allocator() == test_allocator<int>(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_container_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_container_alloc.pass.cpp
new file mode 100644
index 0000000..674fc6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_container_alloc.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//   queue(const container_type& c, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+typedef std::deque<int, test_allocator<int> > C;
+
+struct test
+    : public std::queue<int, C>
+{
+    typedef std::queue<int, C> base;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const container_type& container, const test_allocator<int>& a) : base(container, a) {}
+#if TEST_STD_VER >= 11
+    test(container_type&& container, const test_allocator<int>& a) : base(std::move(container), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+};
+
+int main(int, char**)
+{
+    C d = make<C>(5);
+    test q(d, test_allocator<int>(4));
+    assert(q.get_allocator() == test_allocator<int>(4));
+    assert(q.size() == 5);
+    for (C::size_type i = 0; i < d.size(); ++i)
+    {
+        assert(q.front() == d[i]);
+        q.pop();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_iterators.pass.cpp
new file mode 100644
index 0000000..4ac556e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_iterators.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <queue>
+
+// template <class InputIterator, class Allocator>
+// queue(InputIterator, InputIterator, const Allocator&);
+
+#include <cassert>
+#include <queue>
+
+#include "test_allocator.h"
+
+using base_type = std::queue<int, std::deque<int, test_allocator<int>>>;
+
+class GetAlloc : public base_type {
+  test_allocator_statistics* stats;
+
+public:
+  explicit GetAlloc(test_allocator_statistics& stats_, const int* begin, const int* end)
+      : base_type(begin, end, test_allocator<int>(&stats_)), stats(&stats_) {}
+  void check() {
+    assert(size() == 4);
+    assert(stats->alloc_count > 0);
+  }
+};
+
+int main(int, char**) {
+  const int a[] = {4, 3, 2, 1};
+  test_allocator_statistics stats{};
+  GetAlloc queue(stats, a, a + 4);
+  assert(queue.front() == 4);
+  queue.pop();
+  assert(queue.front() == 3);
+  queue.pop();
+  assert(queue.front() == 2);
+  queue.pop();
+  assert(queue.front() == 1);
+  queue.pop();
+  assert(queue.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_queue_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_queue_alloc.pass.cpp
new file mode 100644
index 0000000..a9107f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_queue_alloc.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class Alloc>
+//   queue(const queue& q, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+typedef std::deque<int, test_allocator<int> > C;
+
+template <class T>
+struct test
+    : public std::queue<T, C>
+{
+    typedef std::queue<T, C> base;
+    typedef test_allocator<int>      allocator_type;
+    typedef typename base::container_type container_type;
+
+    explicit test(const allocator_type& a) : base(a) {}
+    test(const container_type& container, const allocator_type& a) : base(container, a) {}
+    test(const test& q, const allocator_type& a) : base(q, a) {}
+    allocator_type get_allocator() {return this->c.get_allocator();}
+};
+
+int main(int, char**)
+{
+    test<int> q(make<C>(5), test_allocator<int>(4));
+    test<int> q2(q, test_allocator<int>(5));
+    assert(q2.get_allocator() == test_allocator<int>(5));
+    assert(q2.size() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_rcontainer_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_rcontainer_alloc.pass.cpp
new file mode 100644
index 0000000..5e78c33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_rcontainer_alloc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class Alloc>
+//   queue(const container_type& c, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+typedef std::deque<MoveOnly, test_allocator<MoveOnly> > C;
+
+template <class T>
+struct test
+    : public std::queue<T, C>
+{
+    typedef std::queue<T, C> base;
+    typedef test_allocator<MoveOnly>      allocator_type;
+    typedef typename base::container_type container_type;
+
+    explicit test(const allocator_type& a) : base(a) {}
+    test(const container_type& container, const allocator_type& a) : base(container, a) {}
+    test(container_type&& container, const allocator_type& a) : base(std::move(container), a) {}
+    test(test&& q, const allocator_type& a) : base(std::move(q), a) {}
+    allocator_type get_allocator() {return this->c.get_allocator();}
+};
+
+
+int main(int, char**)
+{
+    test<MoveOnly> q(make<C>(5), test_allocator<MoveOnly>(4));
+    assert(q.get_allocator() == test_allocator<MoveOnly>(4));
+    assert(q.size() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_rqueue_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_rqueue_alloc.pass.cpp
new file mode 100644
index 0000000..b0604ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons.alloc/ctor_rqueue_alloc.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class Alloc>
+//   queue(queue&& q, const Alloc& a);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+typedef std::deque<MoveOnly, test_allocator<MoveOnly> > C;
+
+template <class T>
+struct test
+    : public std::queue<T, C>
+{
+    typedef std::queue<T, C> base;
+    typedef test_allocator<MoveOnly>      allocator_type;
+    typedef typename base::container_type container_type;
+
+    explicit test(const allocator_type& a) : base(a) {}
+    test(const container_type& container, const allocator_type& a) : base(container, a) {}
+    test(container_type&& container, const allocator_type& a) : base(std::move(container), a) {}
+    test(test&& q, const allocator_type& a) : base(std::move(q), a) {}
+    allocator_type get_allocator() {return this->c.get_allocator();}
+};
+
+
+int main(int, char**)
+{
+    test<MoveOnly> q(make<C>(5), test_allocator<MoveOnly>(4));
+    test<MoveOnly> q2(std::move(q), test_allocator<MoveOnly>(5));
+    assert(q2.get_allocator() == test_allocator<MoveOnly>(5));
+    assert(q2.size() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_container.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_container.pass.cpp
new file mode 100644
index 0000000..588ed69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_container.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// explicit queue(const container_type& c);
+
+#include <queue>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    typedef std::deque<int> Container;
+    typedef std::queue<int> Q;
+    Container d = make<Container>(5);
+    Q q(d);
+    assert(q.size() == 5);
+    for (std::size_t i = 0; i < d.size(); ++i)
+    {
+        assert(q.front() == d[i]);
+        q.pop();
+    }
+
+#if TEST_STD_VER >= 11
+    static_assert(!test_convertible<Q, const Container&>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_copy.pass.cpp
new file mode 100644
index 0000000..5c9c012
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// queue(const queue&) = default;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::queue<int> q(make<std::deque<int> >(5));
+    std::queue<int> q2 = q;
+    assert(q2 == q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_default.pass.cpp
new file mode 100644
index 0000000..17cb4a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_default.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// explicit queue(Container&& = Container()); // before C++20
+// queue() : queue(Container()) {}            // C++20
+// explicit queue(Container&&);               // before C++20
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    typedef std::vector<int, limited_allocator<int, 10> > Container;
+    typedef std::queue<int, Container> Q;
+    Q q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    assert(q.size() == 2);
+    assert(q.front() == 1);
+    assert(q.back() == 2);
+
+#if TEST_STD_VER >= 11
+    // It should be explicit, so not convertible before C++20.
+    static_assert(test_convertible<Q>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_iterators.pass.cpp
new file mode 100644
index 0000000..5b4a77e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_iterators.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <queue>
+
+// template <class InputIterator>
+// queue(InputIterator, InputIterator);
+
+#include <cassert>
+#include <queue>
+#include <type_traits>
+
+#include "test_allocator.h"
+
+static_assert(!std::is_constructible_v<std::queue<int>, int, int, std::allocator<int>>);
+static_assert(!std::is_constructible_v<std::queue<int>, int*, int*, int>);
+static_assert( std::is_constructible_v<std::queue<int, std::deque<int, test_allocator<int>>>, int*, int*, test_allocator<int>>);
+static_assert(!std::is_constructible_v<std::queue<int, std::deque<int, test_allocator<int>>>, int*, int*, std::allocator<int>>);
+
+template <class T>
+struct alloc : test_allocator<T> {
+  alloc(test_allocator_statistics* a);
+
+  template <class U>
+  struct rebind {
+    using other = alloc<U>;
+  };
+};
+static_assert(
+    std::is_constructible_v<std::queue<int, std::deque<int, alloc<int>>>, int*, int*, test_allocator_statistics*>);
+
+int main(int, char**) {
+  const int a[] = {4, 3, 2, 1};
+  std::queue<int> queue(a, a + 4);
+  assert(queue.front() == 4);
+  queue.pop();
+  assert(queue.front() == 3);
+  queue.pop();
+  assert(queue.front() == 2);
+  queue.pop();
+  assert(queue.front() == 1);
+  queue.pop();
+  assert(queue.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_move.pass.cpp
new file mode 100644
index 0000000..0f11733
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_move.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// queue(queue&& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+
+int main(int, char**)
+{
+    std::queue<MoveOnly> q(make<std::deque<MoveOnly> >(5));
+    std::queue<MoveOnly> q2 = std::move(q);
+    assert(q2.size() == 5);
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_rcontainer.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_rcontainer.pass.cpp
new file mode 100644
index 0000000..22470e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/ctor_rcontainer.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// explicit queue(Container&& c = Container()); // before C++20
+// queue() : queue(Container()) {}              // C++20
+// explicit queue(Container&& c);               // C++20
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+int main(int, char**)
+{
+    typedef std::deque<MoveOnly> Container;
+    typedef std::queue<MoveOnly> Q;
+    Q q(make<std::deque<MoveOnly> >(5));
+    assert(q.size() == 5);
+
+#if TEST_STD_VER >= 11
+    static_assert(!test_convertible<Q, Container&&>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/deduct.fail.cpp
new file mode 100644
index 0000000..301acca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/deduct.fail.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <queue>
+#include <list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+    {
+//  queue(const Container&, const Alloc&);
+//  The '45' is not an allocator
+    std::queue que(std::list<int>{1,2,3}, 45);  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
+    }
+
+    {
+//  queue(const queue&, const Alloc&);
+//  The '45' is not an allocator
+    std::queue<int> source;
+    std::queue que(source, 45);  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
+    }
+
+//  Test the implicit deduction guides
+    {
+//  queue (allocator &)
+    std::queue que((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'queue'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      stack<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/deduct.pass.cpp
new file mode 100644
index 0000000..e17c39e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/deduct.pass.cpp
@@ -0,0 +1,175 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class Container>
+//   queue(Container) -> queue<typename Container::value_type, Container>;
+//
+// template<class Container, class Allocator>
+//   queue(Container, Allocator) -> queue<typename Container::value_type, Container>;
+
+
+#include <array>
+#include <queue>
+#include <list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+    std::list<int> l{0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::queue que(l);
+
+    static_assert(std::is_same_v<decltype(que), std::queue<int, std::list<int>>>, "");
+    assert(que.size() == l.size());
+    assert(que.back() == l.back());
+    }
+
+    {
+    std::list<long, test_allocator<long>> l{10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
+    std::queue que(l, test_allocator<long>(0,2)); // different allocator
+    static_assert(std::is_same_v<decltype(que)::container_type, std::list<long, test_allocator<long>>>, "");
+    static_assert(std::is_same_v<decltype(que)::value_type, long>, "");
+    assert(que.size() == 10);
+    assert(que.back() == 19);
+//  I'd like to assert that we've gotten the right allocator in the queue, but
+//  I don't know how to get at the underlying container.
+    }
+
+//  Test the implicit deduction guides
+    {
+//  We don't expect this one to work - no way to implicitly get value_type
+//  std::queue que(std::allocator<int>()); // queue (allocator &)
+    }
+
+    {
+    std::queue<A> source;
+    std::queue que(source); // queue(queue &)
+    static_assert(std::is_same_v<decltype(que)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(que)::container_type, std::deque<A>>, "");
+    assert(que.size() == 0);
+    }
+
+    {
+        typedef short T;
+        typedef test_allocator<T> Alloc;
+        typedef std::list<T, Alloc> Cont;
+        typedef test_allocator<int> ConvertibleToAlloc;
+        static_assert(std::uses_allocator_v<Cont, ConvertibleToAlloc> &&
+                      !std::is_same_v<typename Cont::allocator_type, ConvertibleToAlloc>);
+
+        {
+        Cont cont;
+        std::queue que(cont, Alloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+
+        {
+        Cont cont;
+        std::queue que(cont, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+
+        {
+        Cont cont;
+        std::queue que(std::move(cont), Alloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+
+        {
+        Cont cont;
+        std::queue que(std::move(cont), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+    }
+
+    {
+        typedef short T;
+        typedef test_allocator<T> Alloc;
+        typedef std::list<T, Alloc> Cont;
+        typedef test_allocator<int> ConvertibleToAlloc;
+        static_assert(std::uses_allocator_v<Cont, ConvertibleToAlloc> &&
+                      !std::is_same_v<typename Cont::allocator_type, ConvertibleToAlloc>);
+
+        {
+        std::queue<T, Cont> source;
+        std::queue que(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+
+        {
+        std::queue<T, Cont> source;
+        std::queue que(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+
+        {
+        std::queue<T, Cont> source;
+        std::queue que(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+
+        {
+        std::queue<T, Cont> source;
+        std::queue que(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(que), std::queue<T, Cont>>);
+        }
+    }
+
+    // Deduction guides should be SFINAE'd away when given:
+    // - a "bad" allocator (that is, a type not qualifying as an allocator);
+    // - an allocator instead of a container;
+    // - an allocator and a container that uses a different allocator.
+    {
+        using Cont = std::list<int>;
+        using Alloc = std::allocator<int>;
+        using DiffAlloc = test_allocator<int>;
+        using Iter = int*;
+
+        struct NotIter{};
+        struct NotAlloc {};
+
+        static_assert(SFINAEs_away<std::queue, Alloc, NotAlloc>);
+        static_assert(SFINAEs_away<std::queue, Cont, NotAlloc>);
+        static_assert(SFINAEs_away<std::queue, Cont, DiffAlloc>);
+        static_assert(SFINAEs_away<std::queue, Iter, NotIter>);
+#if TEST_STD_VER > 20
+        static_assert(SFINAEs_away<std::queue, Iter, NotIter, Alloc>);
+        static_assert(SFINAEs_away<std::queue, Iter, Iter, NotAlloc>);
+#endif
+    }
+#if TEST_STD_VER > 20
+    {
+        typedef short T;
+        typedef test_allocator<T> Alloc;
+        std::list<T> a;
+        {
+        std::queue q(a.begin(), a.end());
+        static_assert(std::is_same_v<decltype(q), std::queue<T>>);
+        }
+        {
+        std::queue q(a.begin(), a.end(), Alloc());
+        static_assert(std::is_same_v<decltype(q), std::queue<T, std::deque<T, Alloc>>>);
+        }
+    }
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..416e4e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/default_noexcept.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// queue()
+//        noexcept(is_nothrow_default_constructible<container_type>::value);
+
+// This tests a conforming extension
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::queue<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..3486604
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// ~queue() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::queue<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..55bd9b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// queue& operator=(queue&& c)
+//     noexcept(is_nothrow_move_assignable<container_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::queue<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..5a2fd03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.cons/move_noexcept.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// queue(queue&&)
+//        noexcept(is_nothrow_move_constructible<container_type>::value);
+
+// This tests a conforming extension
+
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::queue<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..40e00ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// queue& operator=(const queue& q);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <queue>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::queue<operator_hijacker> qo;
+  std::queue<operator_hijacker> q;
+  q = qo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_copy.pass.cpp
new file mode 100644
index 0000000..8e1f82f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// queue& operator=(const queue& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::queue<int> q(make<std::deque<int> >(5));
+    std::queue<int> q2;
+    q2 = q;
+    assert(q2 == q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_move.pass.cpp
new file mode 100644
index 0000000..d3a7083
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/assign_move.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// queue& operator=(queue&& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+
+int main(int, char**)
+{
+    std::queue<MoveOnly> q(make<std::deque<MoveOnly> >(5));
+    std::queue<MoveOnly> q2;
+    q2 = std::move(q);
+    assert(q2.size() == 5);
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/back.pass.cpp
new file mode 100644
index 0000000..2fa537c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/back.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// reference back();
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    int& ir = q.back();
+    assert(ir == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/back_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/back_const.pass.cpp
new file mode 100644
index 0000000..822d7db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/back_const.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// const_reference back() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    const std::queue<int>& cqr = q;
+    const int& cir = cqr.back();
+    assert(cir == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/emplace.pass.cpp
new file mode 100644
index 0000000..bdfd9df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/emplace.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// template <class... Args> decltype(auto) emplace(Args&&... args);
+// return type is 'decltype(auto)' in C++17; 'void' before
+// whatever the return type of the underlying container's emplace_back() returns.
+
+
+#include <queue>
+#include <cassert>
+#include <list>
+
+#include "test_macros.h"
+
+#include "../../../Emplaceable.h"
+
+template <typename Queue>
+void test_return_type() {
+    typedef typename Queue::container_type Container;
+    typedef typename Container::value_type value_type;
+    typedef decltype(std::declval<Queue>().emplace(std::declval<value_type &>())) queue_return_type;
+
+#if TEST_STD_VER > 14
+    typedef decltype(std::declval<Container>().emplace_back(std::declval<value_type>())) container_return_type;
+    static_assert(std::is_same<queue_return_type, container_return_type>::value, "");
+#else
+    static_assert(std::is_same<queue_return_type, void>::value, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_return_type<std::queue<int> > ();
+    test_return_type<std::queue<int, std::list<int> > > ();
+
+    std::queue<Emplaceable> q;
+#if TEST_STD_VER > 14
+    typedef Emplaceable T;
+    T& r1 = q.emplace(1, 2.5);
+    assert(&r1 == &q.back());
+    T& r2 = q.emplace(2, 3.5);
+    assert(&r2 == &q.back());
+    T& r3 = q.emplace(3, 4.5);
+    assert(&r3 == &q.back());
+    assert(&r1 == &q.front());
+#else
+    q.emplace(1, 2.5);
+    q.emplace(2, 3.5);
+    q.emplace(3, 4.5);
+#endif
+
+    assert(q.size() == 3);
+    assert(q.front() == Emplaceable(1, 2.5));
+    assert(q.back() == Emplaceable(3, 4.5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/empty.pass.cpp
new file mode 100644
index 0000000..844e7ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/empty.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// bool empty() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.empty());
+    q.push(1);
+    assert(!q.empty());
+    q.pop();
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/empty.verify.cpp
new file mode 100644
index 0000000..9a8761a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// class queue
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <queue>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/front.pass.cpp
new file mode 100644
index 0000000..d4cbf1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/front.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// reference front();
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    int& ir = q.front();
+    assert(ir == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/front_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/front_const.pass.cpp
new file mode 100644
index 0000000..4e0fc10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/front_const.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// const_reference front() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    const std::queue<int>& cqr = q;
+    const int& cir = cqr.front();
+    assert(cir == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/pop.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/pop.pass.cpp
new file mode 100644
index 0000000..218bec3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/pop.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// void pop();
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    assert(q.size() == 3);
+    assert(q.front() == 1);
+    assert(q.back() == 3);
+    q.pop();
+    assert(q.size() == 2);
+    assert(q.front() == 2);
+    assert(q.back() == 3);
+    q.pop();
+    assert(q.size() == 1);
+    assert(q.front() == 3);
+    assert(q.back() == 3);
+    q.pop();
+    assert(q.size() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/push.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/push.pass.cpp
new file mode 100644
index 0000000..d772307
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/push.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// void push(const value_type& v);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    q.push(1);
+    assert(q.size() == 1);
+    assert(q.front() == 1);
+    assert(q.back() == 1);
+    q.push(2);
+    assert(q.size() == 2);
+    assert(q.front() == 1);
+    assert(q.back() == 2);
+    q.push(3);
+    assert(q.size() == 3);
+    assert(q.front() == 1);
+    assert(q.back() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/push_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/push_rv.pass.cpp
new file mode 100644
index 0000000..2a75668
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/push_rv.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <queue>
+
+// void push(value_type&& v);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    std::queue<MoveOnly> q;
+    q.push(MoveOnly(1));
+    assert(q.size() == 1);
+    assert(q.front() == MoveOnly(1));
+    assert(q.back() == MoveOnly(1));
+    q.push(MoveOnly(2));
+    assert(q.size() == 2);
+    assert(q.front() == MoveOnly(1));
+    assert(q.back() == MoveOnly(2));
+    q.push(MoveOnly(3));
+    assert(q.size() == 3);
+    assert(q.front() == MoveOnly(1));
+    assert(q.back() == MoveOnly(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/size.pass.cpp
new file mode 100644
index 0000000..de53c5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/size.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// size_type size() const;
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::queue<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    assert(q.size() == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/swap.pass.cpp
new file mode 100644
index 0000000..e342aeb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/swap.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// void swap(queue& q);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::queue<int> q1 = make<std::queue<int> >(5);
+    std::queue<int> q2 = make<std::queue<int> >(10);
+    std::queue<int> q1_save = q1;
+    std::queue<int> q2_save = q2;
+    q1.swap(q2);
+    assert(q1 == q2_save);
+    assert(q2 == q1_save);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/types.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/types.compile.fail.cpp
new file mode 100644
index 0000000..041008c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/types.compile.fail.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+#include <queue>
+#include <cassert>
+#include <type_traits>
+
+int main(int, char**)
+{
+//  LWG#2566 says that the first template param must match the second one's value type
+    std::queue<double, std::deque<int>> t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/types.pass.cpp
new file mode 100644
index 0000000..bef4060
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.defn/types.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container = deque<T>>
+// class queue
+// {
+// public:
+//     typedef Container                                container_type;
+//     typedef typename container_type::value_type      value_type;
+//     typedef typename container_type::reference       reference;
+//     typedef typename container_type::const_reference const_reference;
+//     typedef typename container_type::size_type       size_type;
+//
+// protected:
+//     container_type c;
+// ...
+// };
+
+#include <queue>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct test
+    : private std::queue<int>
+{
+    test()
+    {
+        c.push_back(1);
+    }
+};
+
+struct C
+{
+    typedef int value_type;
+    typedef int& reference;
+    typedef const int& const_reference;
+    typedef int size_type;
+};
+
+int main(int, char**)
+{
+    static_assert(( std::is_same<std::queue<int>::container_type, std::deque<int> >::value), "");
+    static_assert(( std::is_same<std::queue<int, std::vector<int> >::container_type, std::vector<int> >::value), "");
+    static_assert(( std::is_same<std::queue<int, std::vector<int> >::value_type, int>::value), "");
+    static_assert(( std::is_same<std::queue<int>::reference, std::deque<int>::reference>::value), "");
+    static_assert(( std::is_same<std::queue<int>::const_reference, std::deque<int>::const_reference>::value), "");
+    static_assert(( std::is_same<std::queue<int>::size_type, std::deque<int>::size_type>::value), "");
+    static_assert(( std::uses_allocator<std::queue<int>, std::allocator<int> >::value), "");
+    static_assert((!std::uses_allocator<std::queue<int, C>, std::allocator<int> >::value), "");
+    test t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.ops/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.ops/eq.pass.cpp
new file mode 100644
index 0000000..8e7825b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.ops/eq.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container>
+//   bool operator==(const queue<T, Container>& x,const queue<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator!=(const queue<T, Container>& x,const queue<T, Container>& y);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::queue<int> q1 = make<std::queue<int> >(5);
+    std::queue<int> q2 = make<std::queue<int> >(10);
+    std::queue<int> q1_save = q1;
+    std::queue<int> q2_save = q2;
+    assert(q1 == q1_save);
+    assert(q1 != q2);
+    assert(q2 == q2_save);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.ops/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.ops/lt.pass.cpp
new file mode 100644
index 0000000..246632f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.ops/lt.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container>
+//   bool operator< (const queue<T, Container>& x,const queue<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator> (const queue<T, Container>& x,const queue<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator>=(const queue<T, Container>& x,const queue<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator<=(const queue<T, Container>& x,const queue<T, Container>& y);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::queue<int> q1 = make<std::queue<int> >(5);
+    std::queue<int> q2 = make<std::queue<int> >(10);
+    assert(q1 < q2);
+    assert(q2 > q1);
+    assert(q1 <= q2);
+    assert(q2 >= q1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.special/swap.pass.cpp
new file mode 100644
index 0000000..56fbb74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.special/swap.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container>
+//   void swap(queue<T, Container>& x, queue<T, Container>& y);
+
+#include <queue>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::queue<int> q1 = make<std::queue<int> >(5);
+    std::queue<int> q2 = make<std::queue<int> >(10);
+    std::queue<int> q1_save = q1;
+    std::queue<int> q2_save = q2;
+    swap(q1, q2);
+    assert(q1 == q2_save);
+    assert(q2 == q1_save);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..7d07a52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/queue/queue.special/swap_noexcept.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// void swap(queue& c)
+//     noexcept(__is_nothrow_swappable<container_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <queue>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::queue<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_alloc.pass.cpp
new file mode 100644
index 0000000..8ec90a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_alloc.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class Alloc>
+//   explicit stack(const Alloc& a);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+struct test
+    : private std::stack<int, std::deque<int, test_allocator<int> > >
+{
+    typedef std::stack<int, std::deque<int, test_allocator<int> > > base;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const container_type& cont, const test_allocator<int>& a) : base(cont, a) {}
+#if TEST_STD_VER >= 11
+    test(container_type&& cont, const test_allocator<int>& a) : base(std::move(cont), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+};
+
+int main(int, char**)
+{
+    test q(test_allocator<int>(3));
+    assert(q.get_allocator() == test_allocator<int>(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_container_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_container_alloc.pass.cpp
new file mode 100644
index 0000000..05e48ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_container_alloc.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class Alloc>
+//   stack(const container_type& c, const Alloc& a);
+
+#include <stack>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+typedef std::deque<int, test_allocator<int> > C;
+
+struct test
+    : public std::stack<int, C>
+{
+    typedef std::stack<int, C> base;
+
+    explicit test(const test_allocator<int>& a) : base(a) {}
+    test(const container_type& cont, const test_allocator<int>& a) : base(cont, a) {}
+#if TEST_STD_VER >= 11
+    test(container_type&& cont, const test_allocator<int>& a) : base(std::move(cont), a) {}
+    test(test&& q, const test_allocator<int>& a) : base(std::move(q), a) {}
+#endif
+    test_allocator<int> get_allocator() {return c.get_allocator();}
+};
+
+int main(int, char**)
+{
+    C d = make<C>(5);
+    test q(d, test_allocator<int>(4));
+    assert(q.get_allocator() == test_allocator<int>(4));
+    assert(q.size() == 5);
+    for (C::size_type i = 0; i < d.size(); ++i)
+    {
+        assert(q.top() == d[d.size() - i - 1]);
+        q.pop();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_copy_alloc.pass.cpp
new file mode 100644
index 0000000..499a3fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_copy_alloc.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class Alloc>
+//   stack(const stack& q, const Alloc& a);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(int(i));
+    return c;
+}
+
+typedef std::deque<int, test_allocator<int> > C;
+
+template <class T>
+struct test
+    : public std::stack<T, C>
+{
+    typedef std::stack<T, C> base;
+    typedef test_allocator<int>      allocator_type;
+    typedef typename base::container_type container_type;
+
+    explicit test(const allocator_type& a) : base(a) {}
+    test(const container_type& cont, const allocator_type& a) : base(cont, a) {}
+    test(const test& q, const allocator_type& a) : base(q, a) {}
+    allocator_type get_allocator() {return this->c.get_allocator();}
+};
+
+int main(int, char**)
+{
+    test<int> q(make<C>(5), test_allocator<int>(4));
+    test<int> q2(q, test_allocator<int>(5));
+    assert(q2.get_allocator() == test_allocator<int>(5));
+    assert(q2.size() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_iterators.pass.cpp
new file mode 100644
index 0000000..67f822e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_iterators.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <queue>
+
+// template <class InputIterator, class Allocator>
+// stack(InputIterator, InputIterator, Allocator);
+
+#include <cassert>
+#include <stack>
+
+#include "test_allocator.h"
+
+using base_type = std::stack<int, std::deque<int, test_allocator<int>>>;
+
+class GetAlloc : public base_type {
+  test_allocator_statistics* stats;
+
+public:
+  GetAlloc(test_allocator_statistics& stats_, const int* begin, const int* end)
+      : base_type(begin, end, test_allocator<int>(&stats_)), stats(&stats_) {}
+  void check() {
+    assert(size() == 4);
+    assert(stats->alloc_count > 0);
+  }
+};
+
+int main(int, char**) {
+  const int a[] = {4, 3, 2, 1};
+  test_allocator_statistics stats{};
+  GetAlloc stack(stats, a, a + 4);
+  assert(stack.top() == 1);
+  stack.pop();
+  assert(stack.top() == 2);
+  stack.pop();
+  assert(stack.top() == 3);
+  stack.pop();
+  assert(stack.top() == 4);
+  stack.pop();
+  assert(stack.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_rcontainer_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_rcontainer_alloc.pass.cpp
new file mode 100644
index 0000000..eb3a1ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_rcontainer_alloc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// template <class Alloc>
+//   stack(const container_type& c, const Alloc& a);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+typedef std::deque<MoveOnly, test_allocator<MoveOnly> > C;
+
+template <class T>
+struct test
+    : public std::stack<T, C>
+{
+    typedef std::stack<T, C> base;
+    typedef test_allocator<MoveOnly>      allocator_type;
+    typedef typename base::container_type container_type;
+
+    explicit test(const allocator_type& a) : base(a) {}
+    test(const container_type& cont, const allocator_type& a) : base(cont, a) {}
+    test(container_type&& cont, const allocator_type& a) : base(std::move(cont), a) {}
+    test(test&& q, const allocator_type& a) : base(std::move(q), a) {}
+    allocator_type get_allocator() {return this->c.get_allocator();}
+};
+
+
+int main(int, char**)
+{
+    test<MoveOnly> q(make<C>(5), test_allocator<MoveOnly>(4));
+    assert(q.get_allocator() == test_allocator<MoveOnly>(4));
+    assert(q.size() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_rqueue_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_rqueue_alloc.pass.cpp
new file mode 100644
index 0000000..849ad04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons.alloc/ctor_rqueue_alloc.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// template <class Alloc>
+//   stack(stack&& q, const Alloc& a);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+typedef std::deque<MoveOnly, test_allocator<MoveOnly> > C;
+
+template <class T>
+struct test
+    : public std::stack<T, C>
+{
+    typedef std::stack<T, C> base;
+    typedef test_allocator<MoveOnly>      allocator_type;
+    typedef typename base::container_type container_type;
+
+    explicit test(const allocator_type& a) : base(a) {}
+    test(const container_type& cont, const allocator_type& a) : base(cont, a) {}
+    test(container_type&& cont, const allocator_type& a) : base(std::move(cont), a) {}
+    test(test&& q, const allocator_type& a) : base(std::move(q), a) {}
+    allocator_type get_allocator() {return this->c.get_allocator();}
+};
+
+
+int main(int, char**)
+{
+    test<MoveOnly> q(make<C>(5), test_allocator<MoveOnly>(4));
+    test<MoveOnly> q2(std::move(q), test_allocator<MoveOnly>(5));
+    assert(q2.get_allocator() == test_allocator<MoveOnly>(5));
+    assert(q2.size() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_container.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_container.pass.cpp
new file mode 100644
index 0000000..b77660d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_container.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// explicit stack(const Container&);
+
+#include <stack>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    typedef std::deque<int> Container;
+    typedef std::stack<int> Q;
+    Container d = make<Container>(5);
+    Q q(d);
+    assert(q.size() == 5);
+    for (std::size_t i = 0; i < d.size(); ++i)
+    {
+        assert(q.top() == d[d.size() - i - 1]);
+        q.pop();
+    }
+
+#if TEST_STD_VER >= 11
+    static_assert(!test_convertible<Q, const Container&>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_copy.pass.cpp
new file mode 100644
index 0000000..e38c12b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// stack(const stack&) = default;
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::stack<int> q(make<std::deque<int> >(5));
+    std::stack<int> q2 = q;
+    assert(q2 == q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_default.pass.cpp
new file mode 100644
index 0000000..4d5aa88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_default.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// explicit stack(Container&& = Container()); // before C++20
+// stack() : stack(Container()) {}            // C++20
+// explicit stack(Container&&);               // before C++20
+
+#include <stack>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    typedef std::vector<int, limited_allocator<int, 10> > Container;
+    typedef std::stack<int, Container> Q;
+    Q q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    assert(q.size() == 2);
+    assert(q.top() == 2);
+
+#if TEST_STD_VER >= 11
+    // It should be explicit, so not convertible before C++20.
+    static_assert(test_convertible<Q>(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_iterators.pass.cpp
new file mode 100644
index 0000000..e458b13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_iterators.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <queue>
+
+// template <class InputIterator>
+// stack(InputIterator, InputIterator);
+
+#include <cassert>
+#include <stack>
+
+#include "test_allocator.h"
+
+static_assert(!std::is_constructible_v<std::stack<int>, int, int, std::allocator<int>>);
+static_assert(!std::is_constructible_v<std::stack<int>, int*, int*, int>);
+static_assert( std::is_constructible_v<std::stack<int, std::deque<int, test_allocator<int>>>, int*, int*, test_allocator<int>>);
+static_assert(!std::is_constructible_v<std::stack<int, std::deque<int, test_allocator<int>>>, int*, int*, std::allocator<int>>);
+
+template <class T>
+struct alloc : test_allocator<T> {
+  template <class U>
+  struct rebind {
+    using other = alloc<U>;
+  };
+  alloc(test_allocator_statistics* a);
+};
+static_assert(
+    std::is_constructible_v<std::stack<int, std::deque<int, alloc<int>>>, int*, int*, test_allocator_statistics*>);
+
+int main(int, char**) {
+  const int a[] = {4, 3, 2, 1};
+  std::stack<int> stack(a, a + 4);
+  assert(stack.top() == 1);
+  stack.pop();
+  assert(stack.top() == 2);
+  stack.pop();
+  assert(stack.top() == 3);
+  stack.pop();
+  assert(stack.top() == 4);
+  stack.pop();
+  assert(stack.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_move.pass.cpp
new file mode 100644
index 0000000..39801e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_move.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// stack(stack&& q);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+
+int main(int, char**)
+{
+    std::stack<MoveOnly> q(make<std::deque<MoveOnly> >(5));
+    std::stack<MoveOnly> q2 = std::move(q);
+    assert(q2.size() == 5);
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_rcontainer.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_rcontainer.pass.cpp
new file mode 100644
index 0000000..56dc40e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/ctor_rcontainer.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// explicit stack(Container&&= Container());  // before C++20
+// stack() : stack(Container()) {}            // C++20
+// explicit stack(Container&&);               // C++20
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+int main(int, char**)
+{
+    typedef std::deque<MoveOnly> Container;
+    typedef std::stack<MoveOnly> Q;
+    Q q(make<Container>(5));
+    assert(q.size() == 5);
+
+#if TEST_STD_VER >= 11
+    static_assert(!test_convertible<Q, Container&&>(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/deduct.fail.cpp
new file mode 100644
index 0000000..55296f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/deduct.fail.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    vector(InputIterator, InputIterator, Allocator = Allocator())
+//    -> vector<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+
+#include <stack>
+#include <list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+    {
+//  stack(const Container&, const Alloc&);
+//  The '45' is not an allocator
+    std::stack stk(std::list<int>({1,2,3}), 45);  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'stack'}}
+    }
+
+    {
+//  stack(const stack&, const Alloc&);
+//  The '45' is not an allocator
+    std::stack<int> source;
+    std::stack stk(source, 45);  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'stack'}}
+    }
+
+//  Test the implicit deduction guides
+    {
+//  stack (allocator &)
+    std::stack stk((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'stack'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      stack<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/deduct.pass.cpp
new file mode 100644
index 0000000..ad02a3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/deduct.pass.cpp
@@ -0,0 +1,181 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class Container>
+//   stack(Container) -> stack<typename Container::value_type, Container>;
+//
+// template<class Container, class Allocator>
+//   stack(Container, Allocator) -> stack<typename Container::value_type, Container>;
+
+
+#include <array>
+#include <stack>
+#include <deque>
+#include <vector>
+#include <list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+    std::vector<int> v{0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::stack stk(v);
+
+    static_assert(std::is_same_v<decltype(stk), std::stack<int, std::vector<int>>>, "");
+    assert(stk.size() == v.size());
+    assert(stk.top() == v.back());
+    }
+
+    {
+    std::list<long, test_allocator<long>> l{10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
+    std::stack stk(l, test_allocator<long>(0,2)); // different allocator
+    static_assert(std::is_same_v<decltype(stk)::container_type, std::list<long, test_allocator<long>>>, "");
+    static_assert(std::is_same_v<decltype(stk)::value_type, long>, "");
+    assert(stk.size() == 10);
+    assert(stk.top() == 19);
+//  I'd like to assert that we've gotten the right allocator in the stack, but
+//  I don't know how to get at the underlying container.
+    }
+
+//  Test the implicit deduction guides
+
+    {
+//  We don't expect this one to work - no way to implicitly get value_type
+//  std::stack stk(std::allocator<int>()); // stack (allocator &)
+    }
+
+    {
+    std::stack<A> source;
+    std::stack stk(source); // stack(stack &)
+    static_assert(std::is_same_v<decltype(stk)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(stk)::container_type, std::deque<A>>, "");
+    assert(stk.size() == 0);
+    }
+
+    {
+        typedef short T;
+        typedef test_allocator<T> Alloc;
+        typedef std::list<T, Alloc> Cont;
+        typedef test_allocator<int> ConvertibleToAlloc;
+        static_assert(std::uses_allocator_v<Cont, ConvertibleToAlloc> &&
+                      !std::is_same_v<typename Cont::allocator_type, ConvertibleToAlloc>);
+
+        {
+        Cont cont;
+        std::stack stk(cont, Alloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+
+        {
+        Cont cont;
+        std::stack stk(cont, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+
+        {
+        Cont cont;
+        std::stack stk(std::move(cont), Alloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+
+        {
+        Cont cont;
+        std::stack stk(std::move(cont), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+    }
+
+    {
+        typedef short T;
+        typedef test_allocator<T> Alloc;
+        typedef std::list<T, Alloc> Cont;
+        typedef test_allocator<int> ConvertibleToAlloc;
+        static_assert(std::uses_allocator_v<Cont, ConvertibleToAlloc> &&
+                      !std::is_same_v<typename Cont::allocator_type, ConvertibleToAlloc>);
+
+        {
+        std::stack<T, Cont> source;
+        std::stack stk(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+
+        {
+        std::stack<T, Cont> source;
+        std::stack stk(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+
+        {
+        std::stack<T, Cont> source;
+        std::stack stk(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+
+        {
+        std::stack<T, Cont> source;
+        std::stack stk(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(stk), std::stack<T, Cont>>);
+        }
+    }
+
+    // Deduction guides should be SFINAE'd away when given:
+    // - a "bad" allocator (that is, a type not qualifying as an allocator);
+    // - an allocator instead of a container;
+    // - an allocator and a container that uses a different allocator.
+    {
+        using Cont = std::list<int>;
+        using Alloc = std::allocator<int>;
+        using DiffAlloc = test_allocator<int>;
+        using Iter = int;
+
+        struct NotIter {};
+        struct NotAlloc {};
+
+        static_assert(SFINAEs_away<std::stack, Alloc, Alloc>);
+        static_assert(SFINAEs_away<std::stack, Cont, NotAlloc>);
+        static_assert(SFINAEs_away<std::stack, Cont, DiffAlloc>);
+        static_assert(SFINAEs_away<std::stack, Iter, NotIter>);
+#if TEST_STD_VER > 20
+        static_assert(SFINAEs_away<std::stack, Iter, NotIter, Alloc>);
+        static_assert(SFINAEs_away<std::stack, Iter, Iter, NotAlloc>);
+#endif
+    }
+
+#if TEST_STD_VER > 20
+    {
+        typedef short T;
+        typedef test_allocator<T> Alloc;
+        std::list<T> a;
+        {
+        std::stack s(a.begin(), a.end());
+        static_assert(std::is_same_v<decltype(s), std::stack<T>>);
+        }
+        {
+        std::stack s(a.begin(), a.end(), Alloc());
+        static_assert(std::is_same_v<decltype(s), std::stack<T, std::deque<T, Alloc>>>);
+        }
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..9cf79a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/default_noexcept.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// stack()
+//        noexcept(is_nothrow_default_constructible<container_type>::value);
+
+// This tests a conforming extension
+
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::stack<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..a73a04b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// ~stack() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::stack<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..d4da48e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// stack& operator=(stack&& c)
+//     noexcept(is_nothrow_move_assignable<container_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::stack<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..24e66a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.cons/move_noexcept.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// stack(stack&&)
+//        noexcept(is_nothrow_move_constructible<container_type>::value);
+
+// This tests a conforming extension
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::stack<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/assign_copy.pass.cpp
new file mode 100644
index 0000000..81ba10e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/assign_copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// stack& operator=(const stack& q);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::stack<int> q(make<std::deque<int> >(5));
+    std::stack<int> q2;
+    q2 = q;
+    assert(q2 == q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/assign_move.pass.cpp
new file mode 100644
index 0000000..8127388
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/assign_move.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// stack& operator=(stack&& q);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push_back(MoveOnly(i));
+    return c;
+}
+
+
+int main(int, char**)
+{
+    std::stack<MoveOnly> q(make<std::deque<MoveOnly> >(5));
+    std::stack<MoveOnly> q2;
+    q2 = std::move(q);
+    assert(q2.size() == 5);
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/emplace.pass.cpp
new file mode 100644
index 0000000..5ce2127
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/emplace.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// template <class... Args> decltype(auto) emplace(Args&&... args);
+// return type is 'decltype(auto)' in C++17; 'void' before
+//  whatever the return type of the underlying container's emplace_back() returns.
+
+#include <stack>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+#include "../../../Emplaceable.h"
+
+template <typename Stack>
+void test_return_type() {
+    typedef typename Stack::container_type Container;
+    typedef typename Container::value_type value_type;
+    typedef decltype(std::declval<Stack>().emplace(std::declval<value_type &>()))     stack_return_type;
+
+#if TEST_STD_VER > 14
+    typedef decltype(std::declval<Container>().emplace_back(std::declval<value_type>())) container_return_type;
+    static_assert(std::is_same<stack_return_type, container_return_type>::value, "");
+#else
+    static_assert(std::is_same<stack_return_type, void>::value, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_return_type<std::stack<int> > ();
+    test_return_type<std::stack<int, std::vector<int> > > ();
+
+    std::stack<Emplaceable> q;
+#if TEST_STD_VER > 14
+    typedef Emplaceable T;
+    T& r1 = q.emplace(1, 2.5);
+    assert(&r1 == &q.top());
+    T& r2 = q.emplace(2, 3.5);
+    assert(&r2 == &q.top());
+    T& r3 = q.emplace(3, 4.5);
+    assert(&r3 == &q.top());
+#else
+    q.emplace(1, 2.5);
+    q.emplace(2, 3.5);
+    q.emplace(3, 4.5);
+#endif
+    assert(q.size() == 3);
+    assert(q.top() == Emplaceable(3, 4.5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/empty.pass.cpp
new file mode 100644
index 0000000..e278c4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/empty.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// bool empty() const;
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> q;
+    assert(q.empty());
+    q.push(1);
+    assert(!q.empty());
+    q.pop();
+    assert(q.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/empty.verify.cpp
new file mode 100644
index 0000000..8264092
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// class stack
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <stack>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/pop.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/pop.pass.cpp
new file mode 100644
index 0000000..d97dd8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/pop.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// void pop();
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    assert(q.size() == 3);
+    assert(q.top() == 3);
+    q.pop();
+    assert(q.size() == 2);
+    assert(q.top() == 2);
+    q.pop();
+    assert(q.size() == 1);
+    assert(q.top() == 1);
+    q.pop();
+    assert(q.size() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/push.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/push.pass.cpp
new file mode 100644
index 0000000..91e08bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/push.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// void push(const value_type& v);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> q;
+    q.push(1);
+    assert(q.size() == 1);
+    assert(q.top() == 1);
+    q.push(2);
+    assert(q.size() == 2);
+    assert(q.top() == 2);
+    q.push(3);
+    assert(q.size() == 3);
+    assert(q.top() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/push_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/push_rv.pass.cpp
new file mode 100644
index 0000000..7eeaba7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/push_rv.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <stack>
+
+// void push(value_type&& v);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    std::stack<MoveOnly> q;
+    q.push(MoveOnly(1));
+    assert(q.size() == 1);
+    assert(q.top() == MoveOnly(1));
+    q.push(MoveOnly(2));
+    assert(q.size() == 2);
+    assert(q.top() == MoveOnly(2));
+    q.push(MoveOnly(3));
+    assert(q.size() == 3);
+    assert(q.top() == MoveOnly(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/size.pass.cpp
new file mode 100644
index 0000000..893984a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/size.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// size_type size() const;
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    assert(q.size() == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/swap.pass.cpp
new file mode 100644
index 0000000..560cc82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/swap.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// void swap(stack& q);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::stack<int> q1 = make<std::stack<int> >(5);
+    std::stack<int> q2 = make<std::stack<int> >(10);
+    std::stack<int> q1_save = q1;
+    std::stack<int> q2_save = q2;
+    q1.swap(q2);
+    assert(q1 == q2_save);
+    assert(q2 == q1_save);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/top.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/top.pass.cpp
new file mode 100644
index 0000000..c5ef96d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/top.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// reference top();
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    int& ir = q.top();
+    assert(ir == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/top_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/top_const.pass.cpp
new file mode 100644
index 0000000..974e341
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/top_const.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// const_reference top() const;
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::stack<int> q;
+    assert(q.size() == 0);
+    q.push(1);
+    q.push(2);
+    q.push(3);
+    const std::stack<int>& cqr = q;
+    const int& cir = cqr.top();
+    assert(cir == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/types.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/types.compile.fail.cpp
new file mode 100644
index 0000000..d5fe97f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/types.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <queue>
+
+// template <class T, class Container = vector<T>,
+//           class Compare = less<typename Container::value_type>>
+// class priority_queue
+// {
+// public:
+//     typedef Container                                container_type;
+//     typedef typename container_type::value_type      value_type;
+//     typedef typename container_type::reference       reference;
+//     typedef typename container_type::const_reference const_reference;
+//     typedef typename container_type::size_type       size_type;
+//
+// protected:
+//     container_type c;
+//     Compare comp;
+
+#include <stack>
+#include <cassert>
+#include <type_traits>
+
+int main(int, char**)
+{
+//  LWG#2566 says that the first template param must match the second one's value type
+    std::stack<double, std::deque<int>> t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/types.pass.cpp
new file mode 100644
index 0000000..944fd42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.defn/types.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class T, class Container = deque<T>>
+// class stack
+// {
+// public:
+//     typedef Container                                container_type;
+//     typedef typename container_type::value_type      value_type;
+//     typedef typename container_type::reference       reference;
+//     typedef typename container_type::const_reference const_reference;
+//     typedef typename container_type::size_type       size_type;
+//
+// protected:
+//     container_type c;
+// ...
+// };
+
+#include <stack>
+#include <vector>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct test
+    : private std::stack<int>
+{
+    test()
+    {
+        c.push_back(1);
+    }
+};
+
+struct C
+{
+    typedef int value_type;
+    typedef int& reference;
+    typedef const int& const_reference;
+    typedef int size_type;
+};
+
+int main(int, char**)
+{
+    static_assert(( std::is_same<std::stack<int>::container_type, std::deque<int> >::value), "");
+    static_assert(( std::is_same<std::stack<int, std::vector<int> >::container_type, std::vector<int> >::value), "");
+    static_assert(( std::is_same<std::stack<int, std::vector<int> >::value_type, int>::value), "");
+    static_assert(( std::is_same<std::stack<int>::reference, std::deque<int>::reference>::value), "");
+    static_assert(( std::is_same<std::stack<int>::const_reference, std::deque<int>::const_reference>::value), "");
+    static_assert(( std::is_same<std::stack<int>::size_type, std::deque<int>::size_type>::value), "");
+    static_assert(( std::uses_allocator<std::stack<int>, std::allocator<int> >::value), "");
+    static_assert((!std::uses_allocator<std::stack<int, C>, std::allocator<int> >::value), "");
+    test t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.ops/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.ops/eq.pass.cpp
new file mode 100644
index 0000000..c826046
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.ops/eq.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class T, class Container>
+//   bool operator==(const stack<T, Container>& x,const stack<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator!=(const stack<T, Container>& x,const stack<T, Container>& y);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::stack<int> q1 = make<std::stack<int> >(5);
+    std::stack<int> q2 = make<std::stack<int> >(10);
+    std::stack<int> q1_save = q1;
+    std::stack<int> q2_save = q2;
+    assert(q1 == q1_save);
+    assert(q1 != q2);
+    assert(q2 == q2_save);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.ops/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.ops/lt.pass.cpp
new file mode 100644
index 0000000..5ac440e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.ops/lt.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class T, class Container>
+//   bool operator< (const stack<T, Container>& x,const stack<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator> (const stack<T, Container>& x,const stack<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator>=(const stack<T, Container>& x,const stack<T, Container>& y);
+//
+// template <class T, class Container>
+//   bool operator<=(const stack<T, Container>& x,const stack<T, Container>& y);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::stack<int> q1 = make<std::stack<int> >(5);
+    std::stack<int> q2 = make<std::stack<int> >(10);
+    assert(q1 < q2);
+    assert(q2 > q1);
+    assert(q1 <= q2);
+    assert(q2 >= q1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.special/swap.pass.cpp
new file mode 100644
index 0000000..1f4a382
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.special/swap.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// template <class T, class Container>
+//   void swap(stack<T, Container>& x, stack<T, Container>& y);
+
+#include <stack>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+C
+make(int n)
+{
+    C c;
+    for (int i = 0; i < n; ++i)
+        c.push(i);
+    return c;
+}
+
+int main(int, char**)
+{
+    std::stack<int> q1 = make<std::stack<int> >(5);
+    std::stack<int> q2 = make<std::stack<int> >(10);
+    std::stack<int> q1_save = q1;
+    std::stack<int> q2_save = q2;
+    swap(q1, q2);
+    assert(q1 == q2_save);
+    assert(q2 == q1_save);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..041944b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.adaptors/stack/stack.special/swap_noexcept.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stack>
+
+// void swap(stack& c)
+//     noexcept(__is_nothrow_swappable<container_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <stack>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::stack<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.node/node_handle.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.node/node_handle.nodiscard.verify.cpp
new file mode 100644
index 0000000..4c47563
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.node/node_handle.nodiscard.verify.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: (c++11 || c++14 || c++17) && !stdlib=libc++
+
+// Make sure the various node handles mark their .empty() method with
+// [[nodiscard]] starting with C++20
+
+#include <map>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+
+#include "test_macros.h"
+
+void test() {
+#if TEST_STD_VER >= 17
+    {
+        std::map<int, int>::node_type node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+    {
+        std::multimap<int, int>::node_type node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+#endif // TEST_STD_VER >= 17
+    {
+        std::set<int> node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+    {
+        std::multiset<int> node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+    {
+        std::unordered_map<int, int> node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+    {
+        std::unordered_multimap<int, int> node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+    {
+        std::unordered_set<int> node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+    {
+        std::unordered_multiset<int> node;
+        node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.node/node_handle.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.node/node_handle.pass.cpp
new file mode 100644
index 0000000..1eab904
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.node/node_handle.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <unordered_set>
+#include <unordered_map>
+#include <set>
+#include <map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+// [container.node.overview] Table 83.
+template <class K, class T, class C1, class C2, class H1, class H2, class E1, class E2, class A_set, class A_map>
+struct node_compatibility_table
+{
+    static constexpr bool value =
+        std::is_same_v<typename std::map<K, T, C1, A_map>::node_type,               typename std::map<K, T, C2, A_map>::node_type> &&
+        std::is_same_v<typename std::map<K, T, C1, A_map>::node_type,               typename std::multimap<K, T, C2, A_map>::node_type> &&
+        std::is_same_v<typename std::set<K, C1, A_set>::node_type,                  typename std::set<K, C2, A_set>::node_type> &&
+        std::is_same_v<typename std::set<K, C1, A_set>::node_type,                  typename std::multiset<K, C2, A_set>::node_type> &&
+        std::is_same_v<typename std::unordered_map<K, T, H1, E1, A_map>::node_type, typename std::unordered_map<K, T, H2, E2, A_map>::node_type> &&
+        std::is_same_v<typename std::unordered_map<K, T, H1, E1, A_map>::node_type, typename std::unordered_multimap<K, T, H2, E2, A_map>::node_type> &&
+        std::is_same_v<typename std::unordered_set<K, H1, E1, A_set>::node_type,    typename std::unordered_set<K, H2, E2, A_set>::node_type> &&
+        std::is_same_v<typename std::unordered_set<K, H1, E1, A_set>::node_type,    typename std::unordered_multiset<K, H2, E2, A_set>::node_type>;
+};
+
+template <class T> struct my_hash
+{
+    using argument_type = T;
+    using result_type = std::size_t;
+    my_hash() = default;
+    std::size_t operator()(const T&) const {return 0;}
+};
+
+template <class T> struct my_compare
+{
+    my_compare() = default;
+    bool operator()(const T&, const T&) const {return true;}
+};
+
+template <class T> struct my_equal
+{
+    my_equal() = default;
+    bool operator()(const T&, const T&) const {return true;}
+};
+
+struct Static
+{
+    Static() = default;
+    Static(const Static&) = delete;
+    Static(Static&&) = delete;
+    Static& operator=(const Static&) = delete;
+    Static& operator=(Static&&) = delete;
+};
+
+namespace std
+{
+template <> struct hash<Static>
+{
+    using argument_type = Static;
+    using result_type = std::size_t;
+    hash() = default;
+    std::size_t operator()(const Static&) const;
+};
+}
+
+static_assert(node_compatibility_table<
+                  int, int, std::less<int>, std::less<int>, std::hash<int>,
+                  std::hash<int>, std::equal_to<int>, std::equal_to<int>,
+                  std::allocator<int>,
+                  std::allocator<std::pair<const int, int>>>::value,
+              "");
+
+static_assert(
+    node_compatibility_table<int, int, std::less<int>, my_compare<int>,
+                             std::hash<int>, my_hash<int>, std::equal_to<int>,
+                             my_equal<int>, std::allocator<int>,
+                             std::allocator<std::pair<const int, int>>>::value,
+    "");
+
+static_assert(node_compatibility_table<
+                  Static, int, my_compare<Static>, std::less<Static>,
+                  my_hash<Static>, std::hash<Static>, my_equal<Static>,
+                  std::equal_to<Static>, min_allocator<Static>,
+                  min_allocator<std::pair<const Static, int>>>::value,
+              "");
+
+template <class Container>
+void test_node_handle_operations()
+{
+    Container c;
+
+    typename Container::node_type nt1, nt2 = c.extract(c.emplace().first);
+    assert(nt2.get_allocator() == c.get_allocator());
+    assert(!nt2.empty());
+    assert(nt1.empty());
+    std::swap(nt1, nt2);
+    assert(nt1.get_allocator() == c.get_allocator());
+    assert(nt2.empty());
+}
+
+template <class Container>
+void test_node_handle_operations_multi()
+{
+    Container c;
+
+    typename Container::node_type nt1, nt2 = c.extract(c.emplace());
+    assert(nt2.get_allocator() == c.get_allocator());
+    assert(!nt2.empty());
+    assert(nt1.empty());
+    std::swap(nt1, nt2);
+    assert(nt1.get_allocator() == c.get_allocator());
+    assert(nt2.empty());
+}
+
+template <class> void test_typedef() {}
+
+template <class Container>
+void test_insert_return_type()
+{
+    test_typedef<typename Container::insert_return_type>();
+}
+
+int main(int, char**)
+{
+    test_node_handle_operations<std::map<int, int>>();
+    test_node_handle_operations_multi<std::multimap<int, int>>();
+    test_node_handle_operations<std::set<int>>();
+    test_node_handle_operations_multi<std::multiset<int>>();
+    test_node_handle_operations<std::unordered_map<int, int>>();
+    test_node_handle_operations_multi<std::unordered_multimap<int, int>>();
+    test_node_handle_operations<std::unordered_set<int>>();
+    test_node_handle_operations_multi<std::unordered_multiset<int>>();
+
+    test_insert_return_type<std::map<int, int>>();
+    test_insert_return_type<std::set<int>>();
+    test_insert_return_type<std::unordered_map<int, int>>();
+    test_insert_return_type<std::unordered_set<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.requirements/associative.reqmts/associative.reqmts.except/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/associative.reqmts/associative.reqmts.except/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/associative.reqmts/associative.reqmts.except/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.requirements/container.requirements.dataraces/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/container.requirements.dataraces/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/container.requirements.dataraces/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.requirements/container.requirements.general/allocator_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/container.requirements.general/allocator_move.pass.cpp
new file mode 100644
index 0000000..cc8949e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/container.requirements.general/allocator_move.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// C++2a[container.requirements.general]p8
+//   Move constructors obtain an allocator by move construction from the allocator
+//   belonging to the container being moved. Such move construction of the
+//   allocator shall not exit via an exception.
+
+#include <vector>
+#include <deque>
+#include <list>
+#include <forward_list>
+#include <set>
+#include <map>
+#include <unordered_map>
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class C>
+void test(int expected_num_allocs = 1) {
+  test_allocator_statistics alloc_stats;
+  {
+    alloc_stats.clear();
+    using AllocT = typename C::allocator_type;
+    C v(AllocT(42, 101, &alloc_stats));
+
+    assert(alloc_stats.count == expected_num_allocs);
+
+    const int num_stored_allocs = alloc_stats.count;
+    {
+      const AllocT& a = v.get_allocator();
+      assert(alloc_stats.count == 1 + num_stored_allocs);
+      assert(a.get_data() == 42);
+      assert(a.get_id() == 101);
+    }
+    assert(alloc_stats.count == num_stored_allocs);
+    alloc_stats.clear_ctor_counters();
+
+    C v2 = std::move(v);
+    assert(alloc_stats.count == num_stored_allocs * 2);
+    assert(alloc_stats.copied == 0);
+    assert(alloc_stats.moved == num_stored_allocs);
+    {
+      const AllocT& a = v.get_allocator();
+      assert(a.get_id() == test_alloc_base::moved_value);
+      assert(a.get_data() == test_alloc_base::moved_value);
+    }
+    {
+      const AllocT& a = v2.get_allocator();
+      assert(a.get_id() == 101);
+      assert(a.get_data() == 42);
+    }
+  }
+}
+
+int main(int, char**) {
+  { // test sequence containers
+    test<std::vector<int, test_allocator<int> > >();
+    test<std::vector<bool, test_allocator<bool> > >();
+    test<std::list<int, test_allocator<int> > >();
+    test<std::forward_list<int, test_allocator<int> > >();
+
+    // libc++ stores two allocators in deque
+#ifdef _LIBCPP_VERSION
+    int stored_allocators = 2;
+#else
+    int stored_allocators = 1;
+#endif
+    test<std::deque<int, test_allocator<int> > >(stored_allocators);
+  }
+  { // test associative containers
+    test<std::set<int, std::less<int>, test_allocator<int> > >();
+    test<std::multiset<int, std::less<int>, test_allocator<int> > >();
+
+    using KV = std::pair<const int, int>;
+    test<std::map<int, int, std::less<int>, test_allocator<KV> > >();
+    test<std::multimap<int, int, std::less<int>, test_allocator<KV> > >();
+  }
+  { // test unordered containers
+    // libc++ stores two allocators in the unordered containers.
+#ifdef _LIBCPP_VERSION
+    int stored_allocators = 2;
+#else
+    int stored_allocators = 1;
+#endif
+    test<std::unordered_set<int, std::hash<int>, std::equal_to<int>,
+                            test_allocator<int> > >(stored_allocators);
+    test<std::unordered_multiset<int, std::hash<int>, std::equal_to<int>,
+                                 test_allocator<int> > >(stored_allocators);
+
+    using KV = std::pair<const int, int>;
+    test<std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
+                            test_allocator<KV> > >(stored_allocators);
+    test<std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>,
+                                 test_allocator<KV> > >(stored_allocators);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.requirements/sequence.reqmts/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/sequence.reqmts/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/sequence.reqmts/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/container.requirements/unord.req/unord.req.except/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/unord.req/unord.req.except/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/container.requirements/unord.req/unord.req.except/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/containers.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/containers.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/containers.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/iterator.rel_ops.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/iterator.rel_ops.compile.pass.cpp
new file mode 100644
index 0000000..89f08e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/iterator.rel_ops.compile.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-filesystem
+
+// std::filesystem is unavailable prior to macOS 10.15
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// Make sure the various containers' iterators are not broken by the use of `std::rel_ops`.
+
+#include <utility> // for std::rel_ops
+
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+#include "filesystem_include.h"
+#endif
+
+#if TEST_STD_VER >= 17
+#include <string_view>
+#endif
+
+#if TEST_STD_VER >= 20
+#include <span>
+#endif
+
+using namespace std::rel_ops;
+
+template<class It, class ConstIt>
+void test_eq(It it, ConstIt cit) {
+    (void)(it == it);
+    (void)(it != it);
+    (void)(it == cit);
+    (void)(it != cit);
+    (void)(cit == it);
+    (void)(cit != it);
+    (void)(cit == cit);
+    (void)(cit != cit);
+}
+
+template<class It, class ConstIt>
+void test_lt(It it, ConstIt cit) {
+    (void)(it <  it);
+    (void)(it <= it);
+    (void)(it >  it);
+    (void)(it >= it);
+    (void)(it <  cit);
+    (void)(it <= cit);
+    (void)(it >  cit);
+    (void)(it >= cit);
+    (void)(cit <  it);
+    (void)(cit <= it);
+    (void)(cit >  it);
+    (void)(cit >= it);
+    (void)(cit <  cit);
+    (void)(cit <= cit);
+    (void)(cit >  cit);
+    (void)(cit >= cit);
+
+    // Test subtraction too, even though std::rel_ops shouldn't affect it.
+
+    (void)(it - it);
+    (void)(it - cit);
+    (void)(cit - it);
+    (void)(cit - cit);
+}
+
+template<class Container>
+void test_forward() {
+    // There is no need to distinguish "forward" from "bidirectional."
+    // libc++ already can't handle `c.rbegin() >= c.rbegin()` in the
+    // presence of std::rel_ops, and neither can Microsoft nor libstdc++.
+
+    Container c;
+    typename Container::iterator it = c.begin();
+    typename Container::const_iterator cit = c.begin();
+    test_eq(it, cit);
+}
+
+template<class Container>
+void test_random_access() {
+    Container c;
+    typename Container::iterator it = c.begin();
+    typename Container::const_iterator cit = c.begin();
+    test_eq(it, cit);
+    test_lt(it, cit);
+}
+
+template void test_random_access<std::array<int, 10> >();
+template void test_random_access<std::deque<int> >();
+template void test_forward<std::forward_list<int> >();
+template void test_forward<std::list<int> >();
+template void test_forward<std::map<int, int> >();
+template void test_forward<std::multimap<int, int> >();
+template void test_forward<std::multiset<int> >();
+template void test_forward<std::set<int> >();
+template void test_random_access<std::string>();
+template void test_forward<std::unordered_map<int, int> >();
+template void test_forward<std::unordered_multimap<int, int> >();
+template void test_forward<std::unordered_multiset<int> >();
+template void test_forward<std::unordered_set<int> >();
+template void test_random_access<std::vector<int> >();
+
+#if TEST_STD_VER >= 11
+void test_directory_iterators() {
+    fs::directory_iterator it;
+    test_eq(it, it);
+
+    fs::recursive_directory_iterator rdit;
+    test_eq(rdit, rdit);
+}
+
+template void test_forward<fs::path>();
+#endif
+
+#if TEST_STD_VER >= 17
+template void test_random_access<std::string_view>();
+#endif
+
+#if TEST_STD_VER >= 20
+void test_span() {
+    std::span<int> c;
+    std::span<int>::iterator it = c.begin();  // span has no const_iterator
+    test_eq(it, it);
+    test_lt(it, it);
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/containers/map_allocator_requirement_test_templates.h b/app/src/main/cpp/libcxx/test/std/containers/map_allocator_requirement_test_templates.h
new file mode 100644
index 0000000..9a6f4be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/map_allocator_requirement_test_templates.h
@@ -0,0 +1,735 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MAP_ALLOCATOR_REQUIREMENT_TEST_TEMPLATES_H
+#define MAP_ALLOCATOR_REQUIREMENT_TEST_TEMPLATES_H
+
+// <map>
+// <unordered_map>
+
+// class map
+// class unordered_map
+
+// insert(...);
+// emplace(...);
+// emplace_hint(...);
+
+// UNSUPPORTED: c++03
+
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "container_test_types.h"
+
+
+template <class Container>
+void testMapInsert()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::insert(const value_type&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    assert(c.insert(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      assert(c.insert(v2).second == false);
+    }
+  }
+  {
+    // Testing C::insert(value_type&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    assert(c.insert(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      assert(c.insert(v2).second == false);
+    }
+  }
+  {
+    // Testing C::insert(value_type&&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&&>();
+    assert(c.insert(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      assert(c.insert(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::insert(const value_type&&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    assert(c.insert(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      assert(c.insert(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::insert({key, value})
+    Container c;
+    cc->expect<ValueTp&&>();
+    assert(c.insert({42, 1}).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      assert(c.insert(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::insert(std::initializer_list<ValueTp>)
+    Container c;
+    std::initializer_list<ValueTp> il = { ValueTp(1, 1), ValueTp(2, 1) };
+    cc->expect<ValueTp const&>(2);
+    c.insert(il);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      c.insert(il);
+    }
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type const&
+    Container c;
+    const ValueTp ValueList[] = { ValueTp(1, 1), ValueTp(2, 1), ValueTp(3, 1) };
+    cc->expect<ValueTp const&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      c.insert(std::begin(ValueList), std::end(ValueList));
+    }
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&&
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1, 1), ValueTp(2, 1) , ValueTp(3, 1) };
+    cc->expect<ValueTp&&>(3);
+    c.insert(std::move_iterator<ValueTp*>(std::begin(ValueList)),
+             std::move_iterator<ValueTp*>(std::end(ValueList)));
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp ValueList2[] = { ValueTp(1, 1), ValueTp(2, 1) , ValueTp(3, 1) };
+      c.insert(std::move_iterator<ValueTp*>(std::begin(ValueList2)),
+               std::move_iterator<ValueTp*>(std::end(ValueList2)));
+    }
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1, 1), ValueTp(2, 1) , ValueTp(3, 1) };
+    cc->expect<ValueTp const&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      c.insert(std::begin(ValueList), std::end(ValueList));
+    }
+  }
+}
+
+
+template <class Container>
+void testMapInsertHint()
+{
+  typedef typename Container::value_type ValueTp;
+  typedef typename Container::key_type Key;
+  typedef typename Container::mapped_type Mapped;
+  typedef typename std::pair<Key, Mapped> NonConstKeyPair;
+  typedef Container C;
+  typedef typename C::iterator It;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::insert(p, const value_type&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    It ret = c.insert(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      It ret2 = c.insert(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::insert(p, value_type&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp const&>();
+    It ret = c.insert(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      It ret2 = c.insert(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::insert(p, value_type&&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&&>();
+    It ret = c.insert(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      It ret2 = c.insert(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::insert(p, {key, value})
+    Container c;
+    cc->expect<ValueTp&&>();
+    It ret = c.insert(c.end(), {42, 1});
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      It ret2 = c.insert(c.begin(), {42, 1});
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::insert(p, const value_type&&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    It ret = c.insert(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      It ret2 = c.insert(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::insert(p, pair<Key, Mapped> const&)
+    Container c;
+    const NonConstKeyPair v(42, 1);
+    cc->expect<const NonConstKeyPair&>();
+    It ret = c.insert(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const NonConstKeyPair v2(42, 1);
+      It ret2 = c.insert(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::insert(p, pair<Key, Mapped>&&)
+    Container c;
+    NonConstKeyPair v(42, 1);
+    cc->expect<NonConstKeyPair&&>();
+    It ret = c.insert(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      NonConstKeyPair v2(42, 1);
+      It ret2 = c.insert(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+
+
+}
+
+
+template <class Container>
+void testMapEmplace()
+{
+  typedef typename Container::value_type ValueTp;
+  typedef typename Container::key_type Key;
+  typedef typename Container::mapped_type Mapped;
+  typedef typename std::pair<Key, Mapped> NonConstKeyPair;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::emplace(const value_type&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    assert(c.emplace(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      assert(c.emplace(v2).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(value_type&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&>();
+    assert(c.emplace(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      assert(c.emplace(v2).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(value_type&&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&&>();
+    assert(c.emplace(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      assert(c.emplace(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(const value_type&&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&&>();
+    assert(c.emplace(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      assert(c.emplace(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(pair<Key, Mapped> const&)
+    Container c;
+    const NonConstKeyPair v(42, 1);
+    cc->expect<const NonConstKeyPair&>();
+    assert(c.emplace(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const NonConstKeyPair v2(42, 1);
+      assert(c.emplace(v2).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(pair<Key, Mapped> &&)
+    Container c;
+    NonConstKeyPair v(42, 1);
+    cc->expect<NonConstKeyPair&&>();
+    assert(c.emplace(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      NonConstKeyPair v2(42, 1);
+      assert(c.emplace(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(const Key&, ConvertibleToMapped&&)
+    Container c;
+    const Key k(42);
+    cc->expect<Key const&, int&&>();
+    assert(c.emplace(k, 1).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const Key k2(42);
+      assert(c.emplace(k2, 2).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(Key&, Mapped&)
+    Container c;
+    Key k(42);
+    Mapped m(1);
+    cc->expect<Key&, Mapped&>();
+    assert(c.emplace(k, m).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      Key k2(42);
+      assert(c.emplace(k2, m).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(Key&&, Mapped&&)
+    Container c;
+    Key k(42);
+    Mapped m(1);
+    cc->expect<Key&&, Mapped&&>();
+    assert(c.emplace(std::move(k), std::move(m)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      Key k2(42);
+      Mapped m2(2);
+      assert(c.emplace(std::move(k2), std::move(m2)).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(ConvertibleToKey&&, ConvertibleToMapped&&)
+    Container c;
+    cc->expect<int&&, int&&>();
+    assert(c.emplace(42, 1).second);
+    assert(!cc->unchecked());
+    {
+      // test that emplacing a duplicate item allocates. We cannot optimize
+      // this case because int&& does not match the type of key exactly.
+      cc->expect<int&&, int&&>();
+      assert(c.emplace(42, 1).second == false);
+      assert(!cc->unchecked());
+    }
+  }
+}
+
+
+template <class Container>
+void testMapEmplaceHint()
+{
+  typedef typename Container::value_type ValueTp;
+  typedef typename Container::key_type Key;
+  typedef typename Container::mapped_type Mapped;
+  typedef typename std::pair<Key, Mapped> NonConstKeyPair;
+  typedef Container C;
+  typedef typename C::iterator It;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::emplace_hint(p, const value_type&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    It ret = c.emplace_hint(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      It ret2 = c.emplace_hint(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, value_type&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&>();
+    It ret = c.emplace_hint(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      It ret2 = c.emplace_hint(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, value_type&&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&&>();
+    It ret = c.emplace_hint(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42, 1);
+      It ret2 = c.emplace_hint(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, const value_type&&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&&>();
+    It ret = c.emplace_hint(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42, 1);
+      It ret2 = c.emplace_hint(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, pair<Key, Mapped> const&)
+    Container c;
+    const NonConstKeyPair v(42, 1);
+    cc->expect<const NonConstKeyPair&>();
+    It ret = c.emplace_hint(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const NonConstKeyPair v2(42, 1);
+      It ret2 = c.emplace_hint(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, pair<Key, Mapped>&&)
+    Container c;
+    NonConstKeyPair v(42, 1);
+    cc->expect<NonConstKeyPair&&>();
+    It ret = c.emplace_hint(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      NonConstKeyPair v2(42, 1);
+      It ret2 = c.emplace_hint(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, const Key&, ConvertibleToMapped&&)
+    Container c;
+    const Key k(42);
+    cc->expect<Key const&, int&&>();
+    It ret = c.emplace_hint(c.end(), k, 42);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const Key k2(42);
+      It ret2 = c.emplace_hint(c.begin(), k2, 1);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, Key&, Mapped&)
+    Container c;
+    Key k(42);
+    Mapped m(1);
+    cc->expect<Key&, Mapped&>();
+    It ret = c.emplace_hint(c.end(), k, m);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      Key k2(42);
+      Mapped m2(2);
+      It ret2 = c.emplace_hint(c.begin(), k2, m2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, Key&&, Mapped&&)
+    Container c;
+    Key k(42);
+    Mapped m(1);
+    cc->expect<Key&&, Mapped&&>();
+    It ret = c.emplace_hint(c.end(), std::move(k), std::move(m));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      Key k2(42);
+      Mapped m2(2);
+      It ret2 = c.emplace_hint(c.begin(), std::move(k2), std::move(m2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, ConvertibleToKey&&, ConvertibleToMapped&&)
+    Container c;
+    cc->expect<int&&, int&&>();
+    It ret = c.emplace_hint(c.end(), 42, 1);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      cc->expect<int&&, int&&>();
+      It ret2 = c.emplace_hint(c.begin(), 42, 2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+      assert(!cc->unchecked());
+    }
+  }
+
+}
+
+
+template <class Container>
+void testMultimapInsert()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::insert(const value_type&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    c.insert(v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(value_type&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&>();
+    c.insert(v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(value_type&&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&&>();
+    c.insert(std::move(v));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert({key, value})
+    Container c;
+    cc->expect<ValueTp&&>();
+    c.insert({42, 1});
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(std::initializer_list<ValueTp>)
+    Container c;
+    std::initializer_list<ValueTp> il = { ValueTp(1, 1), ValueTp(2, 1) };
+    cc->expect<ValueTp const&>(2);
+    c.insert(il);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type const&
+    Container c;
+    const ValueTp ValueList[] = { ValueTp(1, 1), ValueTp(2, 1), ValueTp(3, 1) };
+    cc->expect<ValueTp const&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&&
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1, 1), ValueTp(2, 1) , ValueTp(3, 1) };
+    cc->expect<ValueTp&&>(3);
+    c.insert(std::move_iterator<ValueTp*>(std::begin(ValueList)),
+             std::move_iterator<ValueTp*>(std::end(ValueList)));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1, 1), ValueTp(2, 1) , ValueTp(3, 1) };
+    cc->expect<ValueTp&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+  }
+}
+
+
+template <class Container>
+void testMultimapInsertHint()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::insert(p, const value_type&)
+    Container c;
+    const ValueTp v(42, 1);
+    cc->expect<const ValueTp&>();
+    c.insert(c.begin(), v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(p, value_type&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&>();
+    c.insert(c.begin(), v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(p, value_type&&)
+    Container c;
+    ValueTp v(42, 1);
+    cc->expect<ValueTp&&>();
+    c.insert(c.begin(), std::move(v));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(p, {key, value})
+    Container c;
+    cc->expect<ValueTp&&>();
+    c.insert(c.begin(), {42, 1});
+    assert(!cc->unchecked());
+  }
+}
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/aggregate.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/aggregate.pass.cpp
new file mode 100644
index 0000000..9db25a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/aggregate.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure std::array is an aggregate type.
+// We can only check this in C++17 and above, because we don't have the
+// trait before that.
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <array>
+#include <type_traits>
+
+template <typename T>
+void check_aggregate()
+{
+    static_assert(std::is_aggregate<std::array<T, 0> >::value, "");
+    static_assert(std::is_aggregate<std::array<T, 1> >::value, "");
+    static_assert(std::is_aggregate<std::array<T, 2> >::value, "");
+    static_assert(std::is_aggregate<std::array<T, 3> >::value, "");
+    static_assert(std::is_aggregate<std::array<T, 4> >::value, "");
+}
+
+struct Empty { };
+struct Trivial { int i; int j; };
+struct NonTrivial {
+    int i; int j;
+    NonTrivial(NonTrivial const&) { }
+};
+
+int main(int, char**)
+{
+    check_aggregate<char>();
+    check_aggregate<int>();
+    check_aggregate<long>();
+    check_aggregate<float>();
+    check_aggregate<double>();
+    check_aggregate<long double>();
+    check_aggregate<Empty>();
+    check_aggregate<Trivial>();
+    check_aggregate<NonTrivial>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/deduct.fail.cpp
new file mode 100644
index 0000000..1a654e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/deduct.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class T, class... U>
+//   array(T, U...) -> array<T, 1 + sizeof...(U)>;
+//
+//  Requires: (is_same_v<T, U> && ...) is true. Otherwise the program is ill-formed.
+
+
+#include <array>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::array arr{1,2,3L}; // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'array'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/deduct.pass.cpp
new file mode 100644
index 0000000..30dd48e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/deduct.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class T, class... U>
+//   array(T, U...) -> array<T, 1 + sizeof...(U)>;
+//
+//  Requires: (is_same_v<T, U> && ...) is true. Otherwise the program is ill-formed.
+
+#include <array>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+constexpr bool tests()
+{
+    //  Test the explicit deduction guides
+    {
+        std::array arr{1,2,3};  // array(T, U...)
+        static_assert(std::is_same_v<decltype(arr), std::array<int, 3>>, "");
+        assert(arr[0] == 1);
+        assert(arr[1] == 2);
+        assert(arr[2] == 3);
+    }
+
+    {
+        const long l1 = 42;
+        std::array arr{1L, 4L, 9L, l1}; // array(T, U...)
+        static_assert(std::is_same_v<decltype(arr)::value_type, long>, "");
+        static_assert(arr.size() == 4, "");
+        assert(arr[0] == 1);
+        assert(arr[1] == 4);
+        assert(arr[2] == 9);
+        assert(arr[3] == l1);
+    }
+
+    //  Test the implicit deduction guides
+    {
+        std::array<double, 2> source = {4.0, 5.0};
+        std::array arr(source);   // array(array)
+        static_assert(std::is_same_v<decltype(arr), decltype(source)>, "");
+        static_assert(std::is_same_v<decltype(arr), std::array<double, 2>>, "");
+        assert(arr[0] == 4.0);
+        assert(arr[1] == 5.0);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+    static_assert(tests(), "");
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/implicit_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/implicit_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..4472264
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/implicit_copy.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// implicitly generated array assignment operators
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <array>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::array<operator_hijacker, 1> ao;
+  std::array<operator_hijacker, 1> a;
+  a = ao;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/implicit_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/implicit_copy.pass.cpp
new file mode 100644
index 0000000..0e1e77f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/implicit_copy.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// implicitly generated array constructors / assignment operators
+
+#include <array>
+#include <type_traits>
+#include <cassert>
+#include "test_macros.h"
+
+// In C++03 the copy assignment operator is not deleted when the implicitly
+// generated operator would be ill-formed; like in the case of a struct with a
+// const member.
+#if TEST_STD_VER < 11
+#   define TEST_NOT_COPY_ASSIGNABLE(T) ((void)0)
+#else
+#   define TEST_NOT_COPY_ASSIGNABLE(T) static_assert(!std::is_copy_assignable<T>::value, "")
+#endif
+
+struct NoDefault {
+    TEST_CONSTEXPR NoDefault(int) { }
+};
+
+struct NonTrivialCopy {
+    TEST_CONSTEXPR NonTrivialCopy() { }
+    TEST_CONSTEXPR NonTrivialCopy(NonTrivialCopy const&) { }
+    TEST_CONSTEXPR_CXX14 NonTrivialCopy& operator=(NonTrivialCopy const&) { return *this; }
+};
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        typedef std::array<double, 3> Array;
+        Array array = {1.1, 2.2, 3.3};
+        Array copy = array;
+        copy = array;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+        static_assert(std::is_copy_assignable<Array>::value, "");
+    }
+    {
+        typedef std::array<double const, 3> Array;
+        Array array = {1.1, 2.2, 3.3};
+        Array copy = array; (void)copy;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+        TEST_NOT_COPY_ASSIGNABLE(Array);
+    }
+    {
+        typedef std::array<double, 0> Array;
+        Array array = {};
+        Array copy = array;
+        copy = array;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+        static_assert(std::is_copy_assignable<Array>::value, "");
+    }
+    {
+        // const arrays of size 0 should disable the implicit copy assignment operator.
+        typedef std::array<double const, 0> Array;
+        Array array = {};
+        Array copy = array; (void)copy;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+        TEST_NOT_COPY_ASSIGNABLE(Array);
+    }
+    {
+        typedef std::array<NoDefault, 0> Array;
+        Array array = {};
+        Array copy = array;
+        copy = array;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+        static_assert(std::is_copy_assignable<Array>::value, "");
+    }
+    {
+        typedef std::array<NoDefault const, 0> Array;
+        Array array = {};
+        Array copy = array; (void)copy;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+        TEST_NOT_COPY_ASSIGNABLE(Array);
+    }
+
+    // Make sure we can implicitly copy a std::array of a non-trivially copyable type
+    {
+        typedef std::array<NonTrivialCopy, 0> Array;
+        Array array = {};
+        Array copy = array;
+        copy = array;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+    }
+    {
+        typedef std::array<NonTrivialCopy, 1> Array;
+        Array array = {};
+        Array copy = array;
+        copy = array;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+    }
+    {
+        typedef std::array<NonTrivialCopy, 2> Array;
+        Array array = {};
+        Array copy = array;
+        copy = array;
+        static_assert(std::is_copy_constructible<Array>::value, "");
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp
new file mode 100644
index 0000000..9153106
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.cons/initialization.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Test all the ways of initializing a std::array.
+
+#include <array>
+#include <cassert>
+#include <type_traits>
+#include "test_macros.h"
+
+
+struct NoDefault {
+    TEST_CONSTEXPR NoDefault(int) { }
+};
+
+// Test default initialization
+// This one isn't constexpr because omitting to initialize fundamental types
+// isn't valid in a constexpr context.
+struct test_default_initialization {
+    template <typename T>
+    void operator()() const
+    {
+        std::array<T, 0> a0; (void)a0;
+        std::array<T, 1> a1; (void)a1;
+        std::array<T, 2> a2; (void)a2;
+        std::array<T, 3> a3; (void)a3;
+
+        std::array<NoDefault, 0> nodefault; (void)nodefault;
+    }
+};
+
+struct test_nondefault_initialization {
+    template <typename T>
+    TEST_CONSTEXPR_CXX14 void operator()() const
+    {
+        // Check direct-list-initialization syntax (introduced in C++11)
+    #if TEST_STD_VER >= 11
+        {
+            {
+                std::array<T, 0> a0_0{}; (void)a0_0;
+            }
+            {
+                std::array<T, 1> a1_0{}; (void)a1_0;
+                std::array<T, 1> a1_1{T()}; (void)a1_1;
+            }
+            {
+                std::array<T, 2> a2_0{}; (void)a2_0;
+                std::array<T, 2> a2_1{T()}; (void)a2_1;
+                std::array<T, 2> a2_2{T(), T()}; (void)a2_2;
+            }
+            {
+                std::array<T, 3> a3_0{}; (void)a3_0;
+                std::array<T, 3> a3_1{T()}; (void)a3_1;
+                std::array<T, 3> a3_2{T(), T()}; (void)a3_2;
+                std::array<T, 3> a3_3{T(), T(), T()}; (void)a3_3;
+            }
+
+            std::array<NoDefault, 0> nodefault{}; (void)nodefault;
+        }
+    #endif
+
+        // Check copy-list-initialization syntax
+        {
+            {
+                std::array<T, 0> a0_0 = {}; (void)a0_0;
+            }
+            {
+                std::array<T, 1> a1_0 = {}; (void)a1_0;
+                std::array<T, 1> a1_1 = {T()}; (void)a1_1;
+            }
+            {
+                std::array<T, 2> a2_0 = {}; (void)a2_0;
+                std::array<T, 2> a2_1 = {T()}; (void)a2_1;
+                std::array<T, 2> a2_2 = {T(), T()}; (void)a2_2;
+            }
+            {
+                std::array<T, 3> a3_0 = {}; (void)a3_0;
+                std::array<T, 3> a3_1 = {T()}; (void)a3_1;
+                std::array<T, 3> a3_2 = {T(), T()}; (void)a3_2;
+                std::array<T, 3> a3_3 = {T(), T(), T()}; (void)a3_3;
+            }
+
+            std::array<NoDefault, 0> nodefault = {}; (void)nodefault;
+        }
+
+        // Test aggregate initialization
+        {
+            {
+                std::array<T, 0> a0_0 = {{}}; (void)a0_0;
+            }
+            {
+                std::array<T, 1> a1_0 = {{}}; (void)a1_0;
+                std::array<T, 1> a1_1 = {{T()}}; (void)a1_1;
+            }
+            {
+                std::array<T, 2> a2_0 = {{}}; (void)a2_0;
+                std::array<T, 2> a2_1 = {{T()}}; (void)a2_1;
+                std::array<T, 2> a2_2 = {{T(), T()}}; (void)a2_2;
+            }
+            {
+                std::array<T, 3> a3_0 = {{}}; (void)a3_0;
+                std::array<T, 3> a3_1 = {{T()}}; (void)a3_1;
+                std::array<T, 3> a3_2 = {{T(), T()}}; (void)a3_2;
+                std::array<T, 3> a3_3 = {{T(), T(), T()}}; (void)a3_3;
+            }
+
+            // See http://wg21.link/LWG2157
+            std::array<NoDefault, 0> nodefault = {{}}; (void)nodefault;
+        }
+    }
+};
+
+// Test construction from an initializer-list
+TEST_CONSTEXPR_CXX14 bool test_initializer_list()
+{
+    {
+        std::array<double, 3> const a3_0 = {};
+        assert(a3_0[0] == double());
+        assert(a3_0[1] == double());
+        assert(a3_0[2] == double());
+    }
+    {
+        std::array<double, 3> const a3_1 = {1};
+        assert(a3_1[0] == double(1));
+        assert(a3_1[1] == double());
+        assert(a3_1[2] == double());
+    }
+    {
+        std::array<double, 3> const a3_2 = {1, 2.2};
+        assert(a3_2[0] == double(1));
+        assert(a3_2[1] == 2.2);
+        assert(a3_2[2] == double());
+    }
+    {
+        std::array<double, 3> const a3_3 = {1, 2, 3.5};
+        assert(a3_3[0] == double(1));
+        assert(a3_3[1] == double(2));
+        assert(a3_3[2] == 3.5);
+    }
+
+    return true;
+}
+
+struct Empty { };
+struct Trivial { int i; int j; };
+struct NonTrivial {
+    TEST_CONSTEXPR NonTrivial() { }
+    TEST_CONSTEXPR NonTrivial(NonTrivial const&) { }
+};
+struct NonEmptyNonTrivial {
+    int i; int j;
+    TEST_CONSTEXPR NonEmptyNonTrivial() : i(22), j(33) { }
+    TEST_CONSTEXPR NonEmptyNonTrivial(NonEmptyNonTrivial const&) : i(22), j(33) { }
+};
+
+template <typename F>
+TEST_CONSTEXPR_CXX14 bool with_all_types()
+{
+    F().template operator()<char>();
+    F().template operator()<int>();
+    F().template operator()<long>();
+    F().template operator()<float>();
+    F().template operator()<double>();
+    F().template operator()<long double>();
+    F().template operator()<Empty>();
+    F().template operator()<Trivial>();
+    F().template operator()<NonTrivial>();
+    F().template operator()<NonEmptyNonTrivial>();
+    return true;
+}
+
+int main(int, char**)
+{
+    with_all_types<test_nondefault_initialization>();
+    with_all_types<test_default_initialization>(); // not constexpr
+    test_initializer_list();
+#if TEST_STD_VER >= 14
+    static_assert(with_all_types<test_nondefault_initialization>(), "");
+    static_assert(test_initializer_list(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.creation/to_array.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.creation/to_array.fail.cpp
new file mode 100644
index 0000000..9e7b456
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.creation/to_array.fail.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <array>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+// expected-warning@array:* 0-1 {{suggest braces around initialization of subobject}}
+
+int main(int, char**) {
+  {
+    char source[3][6] = {"hi", "world"};
+    // expected-error@array:* {{to_array does not accept multidimensional arrays}}
+    // expected-error@array:* {{to_array requires copy constructible elements}}
+    // expected-error@array:* 3 {{cannot initialize}}
+    std::to_array(source); // expected-note {{requested here}}
+  }
+
+  {
+    MoveOnly mo[] = {MoveOnly{3}};
+    // expected-error@array:* {{to_array requires copy constructible elements}}
+    // expected-error-re@array:* {{{{(call to implicitly-deleted copy constructor of 'MoveOnly')|(call to deleted constructor of 'MoveOnly')}}}}
+    std::to_array(mo); // expected-note {{requested here}}
+  }
+
+  {
+    const MoveOnly cmo[] = {MoveOnly{3}};
+    // expected-error@array:* {{to_array requires move constructible elements}}
+    // expected-error-re@array:* {{{{(call to implicitly-deleted copy constructor of 'MoveOnly')|(call to deleted constructor of 'MoveOnly')}}}}
+    std::to_array(std::move(cmo)); // expected-note {{requested here}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.creation/to_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.creation/to_array.pass.cpp
new file mode 100644
index 0000000..778fae1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.creation/to_array.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <typename T, size_t Size>
+// constexpr auto to_array(T (&arr)[Size])
+//    -> array<remove_cv_t<T>, Size>;
+
+// template <typename T, size_t Size>
+// constexpr auto to_array(T (&&arr)[Size])
+//    -> array<remove_cv_t<T>, Size>;
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+constexpr bool tests()
+{
+  //  Test deduced type.
+  {
+    auto arr = std::to_array({1, 2, 3});
+    ASSERT_SAME_TYPE(decltype(arr), std::array<int, 3>);
+    assert(arr[0] == 1);
+    assert(arr[1] == 2);
+    assert(arr[2] == 3);
+  }
+
+  {
+    const long l1 = 42;
+    auto arr = std::to_array({1L, 4L, 9L, l1});
+    ASSERT_SAME_TYPE(decltype(arr)::value_type, long);
+    static_assert(arr.size() == 4, "");
+    assert(arr[0] == 1);
+    assert(arr[1] == 4);
+    assert(arr[2] == 9);
+    assert(arr[3] == l1);
+  }
+
+  {
+    auto arr = std::to_array("meow");
+    ASSERT_SAME_TYPE(decltype(arr), std::array<char, 5>);
+    assert(arr[0] == 'm');
+    assert(arr[1] == 'e');
+    assert(arr[2] == 'o');
+    assert(arr[3] == 'w');
+    assert(arr[4] == '\0');
+  }
+
+  {
+    double source[3] = {4.0, 5.0, 6.0};
+    auto arr = std::to_array(source);
+    ASSERT_SAME_TYPE(decltype(arr), std::array<double, 3>);
+    assert(arr[0] == 4.0);
+    assert(arr[1] == 5.0);
+    assert(arr[2] == 6.0);
+  }
+
+  {
+    double source[3] = {4.0, 5.0, 6.0};
+    auto arr = std::to_array(std::move(source));
+    ASSERT_SAME_TYPE(decltype(arr), std::array<double, 3>);
+    assert(arr[0] == 4.0);
+    assert(arr[1] == 5.0);
+    assert(arr[2] == 6.0);
+  }
+
+  {
+    MoveOnly source[] = {MoveOnly{0}, MoveOnly{1}, MoveOnly{2}};
+
+    auto arr = std::to_array(std::move(source));
+    ASSERT_SAME_TYPE(decltype(arr), std::array<MoveOnly, 3>);
+    for (int i = 0; i < 3; ++i)
+      assert(arr[i].get() == i && source[i].get() == 0);
+  }
+
+#ifndef _MSVC_STL_VERSION
+  // Test C99 compound literal.
+  {
+    auto arr = std::to_array((int[]){3, 4});
+    ASSERT_SAME_TYPE(decltype(arr), std::array<int, 2>);
+    assert(arr[0] == 3);
+    assert(arr[1] == 4);
+  }
+#endif // ! _MSVC_STL_VERSION
+
+  //  Test explicit type.
+  {
+    auto arr = std::to_array<long>({1, 2, 3});
+    ASSERT_SAME_TYPE(decltype(arr), std::array<long, 3>);
+    assert(arr[0] == 1);
+    assert(arr[1] == 2);
+    assert(arr[2] == 3);
+  }
+
+  {
+    struct A {
+      int a;
+      double b;
+    };
+
+    auto arr = std::to_array<A>({{3, .1}});
+    ASSERT_SAME_TYPE(decltype(arr), std::array<A, 1>);
+    assert(arr[0].a == 3);
+    assert(arr[0].b == .1);
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  tests();
+  static_assert(tests(), "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.data/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.data/data.pass.cpp
new file mode 100644
index 0000000..b0f9c3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.data/data.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// T *data();
+
+#include <array>
+#include <cassert>
+#include <cstddef>       // for std::max_align_t
+#include <cstdint>
+
+#include "test_macros.h"
+
+struct NoDefault {
+    TEST_CONSTEXPR NoDefault(int) { }
+};
+
+#if TEST_STD_VER < 11
+struct natural_alignment {
+    long t1;
+    long long t2;
+    double t3;
+    long double t4;
+};
+#endif
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        ASSERT_NOEXCEPT(c.data());
+        T* p = c.data();
+        assert(p[0] == 1);
+        assert(p[1] == 2);
+        assert(p[2] == 3.5);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c = {};
+        ASSERT_NOEXCEPT(c.data());
+        T* p = c.data();
+        (void)p;
+    }
+    {
+        typedef double T;
+        typedef std::array<const T, 0> C;
+        C c = {{}};
+        ASSERT_NOEXCEPT(c.data());
+        const T* p = c.data();
+        (void)p;
+        static_assert((std::is_same<decltype(c.data()), const T*>::value), "");
+    }
+    {
+        typedef NoDefault T;
+        typedef std::array<T, 0> C;
+        C c = {};
+        ASSERT_NOEXCEPT(c.data());
+        T* p = c.data();
+        (void)p;
+    }
+    {
+        std::array<int, 5> c = {0, 1, 2, 3, 4};
+        assert(c.data() == &c[0]);
+        assert(*c.data() == c[0]);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+
+    // Test the alignment of data()
+    {
+#if TEST_STD_VER < 11
+        typedef natural_alignment T;
+#else
+        typedef std::max_align_t T;
+#endif
+        typedef std::array<T, 0> C;
+        const C c = {};
+        const T* p = c.data();
+        std::uintptr_t pint = reinterpret_cast<std::uintptr_t>(p);
+        assert(pint % TEST_ALIGNOF(T) == 0);
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.data/data_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.data/data_const.pass.cpp
new file mode 100644
index 0000000..f6c2e59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.data/data_const.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// const T* data() const;
+
+#include <array>
+#include <cassert>
+#include <cstddef>       // for std::max_align_t
+#include <cstdint>
+
+#include "test_macros.h"
+
+struct NoDefault {
+    TEST_CONSTEXPR NoDefault(int) { }
+};
+
+#if TEST_STD_VER < 11
+struct natural_alignment {
+    long t1;
+    long long t2;
+    double t3;
+    long double t4;
+};
+#endif
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        const C c = {1, 2, 3.5};
+        ASSERT_NOEXCEPT(c.data());
+        const T* p = c.data();
+        assert(p[0] == 1);
+        assert(p[1] == 2);
+        assert(p[2] == 3.5);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        const C c = {};
+        ASSERT_NOEXCEPT(c.data());
+        const T* p = c.data();
+        (void)p;
+    }
+    {
+        typedef NoDefault T;
+        typedef std::array<T, 0> C;
+        const C c = {};
+        ASSERT_NOEXCEPT(c.data());
+        const T* p = c.data();
+        (void)p;
+    }
+    {
+        std::array<int, 5> const c = {0, 1, 2, 3, 4};
+        assert(c.data() == &c[0]);
+        assert(*c.data() == c[0]);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+
+    // Test the alignment of data()
+    {
+#if TEST_STD_VER < 11
+        typedef natural_alignment T;
+#else
+        typedef std::max_align_t T;
+#endif
+        typedef std::array<T, 0> C;
+        const C c = {};
+        const T* p = c.data();
+        std::uintptr_t pint = reinterpret_cast<std::uintptr_t>(p);
+        assert(pint % TEST_ALIGNOF(T) == 0);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.fill/fill.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.fill/fill.fail.cpp
new file mode 100644
index 0000000..21ea6f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.fill/fill.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// void fill(const T& u);
+
+#include <array>
+#include <cassert>
+
+int main(int, char**) {
+  {
+    typedef double T;
+    typedef std::array<const T, 0> C;
+    C c = {};
+    // expected-error-re@array:* {{{{(static_assert|static assertion)}} failed{{.*}}cannot fill zero-sized array of type 'const T'}}
+    c.fill(5.5); // expected-note {{requested here}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.fill/fill.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.fill/fill.pass.cpp
new file mode 100644
index 0000000..b2d7c4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.fill/fill.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// void fill(const T& u);
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        c.fill(5.5);
+        assert(c.size() == 3);
+        assert(c[0] == 5.5);
+        assert(c[1] == 5.5);
+        assert(c[2] == 5.5);
+    }
+
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c = {};
+        c.fill(5.5);
+        assert(c.size() == 0);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 20
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.size/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.size/size.pass.cpp
new file mode 100644
index 0000000..d39edd1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.size/size.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <class T, size_t N> constexpr size_type array<T,N>::size();
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        assert(c.size() == 3);
+        assert(c.max_size() == 3);
+        assert(!c.empty());
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c = {};
+        assert(c.size() == 0);
+        assert(c.max_size() == 0);
+        assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        constexpr C c = {1, 2, 3.5};
+        static_assert(c.size() == 3, "");
+        static_assert(c.max_size() == 3, "");
+        static_assert(!c.empty(), "");
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        constexpr C c = {};
+        static_assert(c.size() == 0, "");
+        static_assert(c.max_size() == 0, "");
+        static_assert(c.empty(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.special/swap.pass.cpp
new file mode 100644
index 0000000..617641d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.special/swap.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <class T, size_t N> void swap(array<T,N>& x, array<T,N>& y);
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonSwappable {
+    TEST_CONSTEXPR NonSwappable() { }
+private:
+    NonSwappable(NonSwappable const&);
+    NonSwappable& operator=(NonSwappable const&);
+};
+
+template <class Tp>
+decltype(swap(std::declval<Tp>(), std::declval<Tp>()))
+can_swap_imp(int);
+
+template <class Tp>
+std::false_type can_swap_imp(...);
+
+template <class Tp>
+struct can_swap : std::is_same<decltype(can_swap_imp<Tp>(0)), void> { };
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c1 = {1, 2, 3.5};
+        C c2 = {4, 5, 6.5};
+        swap(c1, c2);
+        assert(c1.size() == 3);
+        assert(c1[0] == 4);
+        assert(c1[1] == 5);
+        assert(c1[2] == 6.5);
+        assert(c2.size() == 3);
+        assert(c2[0] == 1);
+        assert(c2[1] == 2);
+        assert(c2[2] == 3.5);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c1 = {};
+        C c2 = {};
+        swap(c1, c2);
+        assert(c1.size() == 0);
+        assert(c2.size() == 0);
+    }
+    {
+        typedef NonSwappable T;
+        typedef std::array<T, 0> C0;
+        static_assert(can_swap<C0&>::value, "");
+        C0 l = {};
+        C0 r = {};
+        swap(l, r);
+#if TEST_STD_VER >= 11
+        static_assert(noexcept(swap(l, r)), "");
+#endif
+    }
+#if TEST_STD_VER >= 11
+    {
+        // NonSwappable is still considered swappable in C++03 because there
+        // is no access control SFINAE.
+        typedef NonSwappable T;
+        typedef std::array<T, 42> C1;
+        static_assert(!can_swap<C1&>::value, "");
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 20
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.swap/swap.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.swap/swap.fail.cpp
new file mode 100644
index 0000000..6b17887
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.swap/swap.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// void swap(array& a);
+
+#include <array>
+#include <cassert>
+
+int main(int, char**) {
+  {
+    typedef double T;
+    typedef std::array<const T, 0> C;
+    C c = {};
+    C c2 = {};
+    // expected-error-re@array:* {{{{(static_assert|static assertion)}} failed{{.*}}cannot swap zero-sized array of type 'const T'}}
+    c.swap(c2); // expected-note {{requested here}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.swap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.swap/swap.pass.cpp
new file mode 100644
index 0000000..e0133ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.swap/swap.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// void swap(array& a);
+// namespace std { void swap(array<T, N> &x, array<T, N> &y);
+
+#include <cassert>
+#include <array>
+
+#include "test_macros.h"
+
+struct NonSwappable {
+    TEST_CONSTEXPR NonSwappable() { }
+private:
+    NonSwappable(NonSwappable const&);
+    NonSwappable& operator=(NonSwappable const&);
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c1 = {1, 2, 3.5};
+        C c2 = {4, 5, 6.5};
+        c1.swap(c2);
+        assert(c1.size() == 3);
+        assert(c1[0] == 4);
+        assert(c1[1] == 5);
+        assert(c1[2] == 6.5);
+        assert(c2.size() == 3);
+        assert(c2[0] == 1);
+        assert(c2[1] == 2);
+        assert(c2[2] == 3.5);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c1 = {1, 2, 3.5};
+        C c2 = {4, 5, 6.5};
+        std::swap(c1, c2);
+        assert(c1.size() == 3);
+        assert(c1[0] == 4);
+        assert(c1[1] == 5);
+        assert(c1[2] == 6.5);
+        assert(c2.size() == 3);
+        assert(c2[0] == 1);
+        assert(c2[1] == 2);
+        assert(c2[2] == 3.5);
+    }
+
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c1 = {};
+        C c2 = {};
+        c1.swap(c2);
+        assert(c1.size() == 0);
+        assert(c2.size() == 0);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c1 = {};
+        C c2 = {};
+        std::swap(c1, c2);
+        assert(c1.size() == 0);
+        assert(c2.size() == 0);
+    }
+    {
+        typedef NonSwappable T;
+        typedef std::array<T, 0> C0;
+        C0 l = {};
+        C0 r = {};
+        l.swap(r);
+#if TEST_STD_VER >= 11
+        static_assert(noexcept(l.swap(r)), "");
+#endif
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 20
+    static_assert(tests(), "");
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get.fail.cpp
new file mode 100644
index 0000000..2e10715
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <size_t I, class T, size_t N> T& get(array<T, N>& a);
+
+// Prevent -Warray-bounds from issuing a diagnostic when testing with clang verify.
+// ADDITIONAL_COMPILE_FLAGS: -Wno-array-bounds
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        std::get<3>(c) = 5.5; // expected-note {{requested here}}
+        // expected-error-re@array:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '3U[L]{0,2} < 3U[L]{0,2}')?}}{{.*}}Index out of bounds in std::get<> (std::array)}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get.pass.cpp
new file mode 100644
index 0000000..04bb131
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <size_t I, class T, size_t N> T& get(array<T, N>& a);
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename ...T>
+TEST_CONSTEXPR std::array<int, sizeof...(T)> tempArray(T ...args)
+{
+    return {args...};
+}
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        std::array<double, 1> array = {3.3};
+        assert(std::get<0>(array) == 3.3);
+        std::get<0>(array) = 99.1;
+        assert(std::get<0>(array) == 99.1);
+    }
+    {
+        std::array<double, 2> array = {3.3, 4.4};
+        assert(std::get<0>(array) == 3.3);
+        assert(std::get<1>(array) == 4.4);
+        std::get<0>(array) = 99.1;
+        std::get<1>(array) = 99.2;
+        assert(std::get<0>(array) == 99.1);
+        assert(std::get<1>(array) == 99.2);
+    }
+    {
+        std::array<double, 3> array = {3.3, 4.4, 5.5};
+        assert(std::get<0>(array) == 3.3);
+        assert(std::get<1>(array) == 4.4);
+        assert(std::get<2>(array) == 5.5);
+        std::get<1>(array) = 99.2;
+        assert(std::get<0>(array) == 3.3);
+        assert(std::get<1>(array) == 99.2);
+        assert(std::get<2>(array) == 5.5);
+    }
+    {
+        std::array<double, 1> array = {3.3};
+        static_assert(std::is_same<double&, decltype(std::get<0>(array))>::value, "");
+    }
+    {
+        assert(std::get<0>(tempArray(1, 2, 3)) == 1);
+        assert(std::get<1>(tempArray(1, 2, 3)) == 2);
+        assert(std::get<2>(tempArray(1, 2, 3)) == 3);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_const.pass.cpp
new file mode 100644
index 0000000..5fc080b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_const.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <size_t I, class T, size_t N> const T& get(const array<T, N>& a);
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        std::array<double, 1> const array = {3.3};
+        assert(std::get<0>(array) == 3.3);
+    }
+    {
+        std::array<double, 2> const array = {3.3, 4.4};
+        assert(std::get<0>(array) == 3.3);
+        assert(std::get<1>(array) == 4.4);
+    }
+    {
+        std::array<double, 3> const array = {3.3, 4.4, 5.5};
+        assert(std::get<0>(array) == 3.3);
+        assert(std::get<1>(array) == 4.4);
+        assert(std::get<2>(array) == 5.5);
+    }
+    {
+        std::array<double, 1> const array = {3.3};
+        static_assert(std::is_same<double const&, decltype(std::get<0>(array))>::value, "");
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_const_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_const_rv.pass.cpp
new file mode 100644
index 0000000..a512100
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_const_rv.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <size_t I, class T, size_t N> const T&& get(const array<T, N>&& a);
+
+// UNSUPPORTED: c++03
+
+#include <array>
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+    {
+        typedef std::unique_ptr<double> T;
+        typedef std::array<T, 1> C;
+        const C c = {std::unique_ptr<double>(new double(3.5))};
+        static_assert(std::is_same<const T&&, decltype(std::get<0>(std::move(c)))>::value, "");
+        static_assert(noexcept(std::get<0>(std::move(c))), "");
+        const T&& t = std::get<0>(std::move(c));
+        assert(*t == 3.5);
+    }
+
+#if TEST_STD_VER >= 14
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        constexpr const C c = {1, 2, 3.5};
+        static_assert(std::get<0>(std::move(c)) == 1, "");
+        static_assert(std::get<1>(std::move(c)) == 2, "");
+        static_assert(std::get<2>(std::move(c)) == 3.5, "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_rv.pass.cpp
new file mode 100644
index 0000000..2ab8acb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/get_rv.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <size_t I, class T, size_t N> T&& get(array<T, N>&& a);
+
+// UNSUPPORTED: c++03
+
+#include <array>
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unique_ptr<double> T;
+        typedef std::array<T, 1> C;
+        C c = {std::unique_ptr<double>(new double(3.5))};
+        T t = std::get<0>(std::move(c));
+        assert(*t == 3.5);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_element.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_element.fail.cpp
new file mode 100644
index 0000000..6010c89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_element.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// tuple_element<I, array<T, N> >::type
+
+#include <array>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        std::tuple_element<3, C> foo; // expected-note {{requested here}}
+        // expected-error-re@array:* {{{{(static_assert|static assertion)}} failed{{( due to requirement '3U[L]{0,2} < 3U[L]{0,2}')?}}{{.*}}Index out of bounds in std::tuple_element<> (std::array)}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_element.pass.cpp
new file mode 100644
index 0000000..fb7aa7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_element.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// tuple_element<I, array<T, N> >::type
+
+#include <array>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test()
+{
+    {
+    typedef T Exp;
+    typedef std::array<T, 3> C;
+    static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
+    }
+    {
+    typedef T const Exp;
+    typedef std::array<T, 3> const C;
+    static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
+    }
+    {
+    typedef T volatile Exp;
+    typedef std::array<T, 3> volatile C;
+    static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
+    }
+    {
+    typedef T const volatile Exp;
+    typedef std::array<T, 3> const volatile C;
+    static_assert((std::is_same<typename std::tuple_element<0, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, C>::type, Exp>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<2, C>::type, Exp>::value), "");
+    }
+}
+
+int main(int, char**)
+{
+    test<double>();
+    test<int>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_size.pass.cpp
new file mode 100644
index 0000000..e31407a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.tuple/tuple_size.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// tuple_size<array<T, N> >::value
+
+#include <array>
+
+#include "test_macros.h"
+
+template <class T, std::size_t N>
+void test()
+{
+    {
+    typedef std::array<T, N> C;
+    static_assert((std::tuple_size<C>::value == N), "");
+    }
+    {
+    typedef std::array<T const, N> C;
+    static_assert((std::tuple_size<C>::value == N), "");
+    }
+    {
+    typedef std::array<T volatile, N> C;
+    static_assert((std::tuple_size<C>::value == N), "");
+    }
+    {
+    typedef std::array<T const volatile, N> C;
+    static_assert((std::tuple_size<C>::value == N), "");
+    }
+}
+
+int main(int, char**)
+{
+    test<double, 0>();
+    test<double, 3>();
+    test<double, 5>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.zero/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.zero/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..af4ab87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/array.zero/tested_elsewhere.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// support for zero-sized array
+
+#include <array>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/at.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/at.pass.cpp
new file mode 100644
index 0000000..90b5684
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/at.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// reference at (size_type); // constexpr in C++17
+
+#include <array>
+#include <cassert>
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+#include <stdexcept>
+#endif
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        typename C::reference r1 = c.at(0);
+        assert(r1 == 1);
+        r1 = 5.5;
+        assert(c[0] == 5.5);
+
+        typename C::reference r2 = c.at(2);
+        assert(r2 == 3.5);
+        r2 = 7.5;
+        assert(c[2] == 7.5);
+    }
+    return true;
+}
+
+void test_exceptions()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::array<int, 4> array = {1, 2, 3, 4};
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(4);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(5);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(6);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            using size_type = decltype(array)::size_type;
+            TEST_IGNORE_NODISCARD array.at(static_cast<size_type>(-1));
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+    }
+
+    {
+        std::array<int, 0> array = {};
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(0);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    tests();
+    test_exceptions();
+
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/at_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/at_const.pass.cpp
new file mode 100644
index 0000000..2ddd5a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/at_const.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// const_reference at (size_type) const; // constexpr in C++14
+
+#include <array>
+#include <cassert>
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+#include <stdexcept>
+#endif
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C const c = {1, 2, 3.5};
+        typename C::const_reference r1 = c.at(0);
+        assert(r1 == 1);
+
+        typename C::const_reference r2 = c.at(2);
+        assert(r2 == 3.5);
+    }
+    return true;
+}
+
+void test_exceptions()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::array<int, 4> const array = {1, 2, 3, 4};
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(4);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(5);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(6);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+
+        try {
+            using size_type = decltype(array)::size_type;
+            TEST_IGNORE_NODISCARD array.at(static_cast<size_type>(-1));
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+    }
+
+    {
+        std::array<int, 0> array = {};
+
+        try {
+            TEST_IGNORE_NODISCARD array.at(0);
+            assert(false);
+        } catch (std::out_of_range const&) {
+            // pass
+        } catch (...) {
+            assert(false);
+        }
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    tests();
+    test_exceptions();
+
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/compare.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/compare.fail.cpp
new file mode 100644
index 0000000..1fe4c70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/compare.fail.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// bool operator==(array<T, N> const&, array<T, N> const&);
+// bool operator!=(array<T, N> const&, array<T, N> const&);
+// bool operator<(array<T, N> const&, array<T, N> const&);
+// bool operator<=(array<T, N> const&, array<T, N> const&);
+// bool operator>(array<T, N> const&, array<T, N> const&);
+// bool operator>=(array<T, N> const&, array<T, N> const&);
+
+
+#include <array>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class Array>
+void test_compare(const Array& LHS, const Array& RHS) {
+  typedef std::vector<typename Array::value_type> Vector;
+  const Vector LHSV(LHS.begin(), LHS.end());
+  const Vector RHSV(RHS.begin(), RHS.end());
+  assert((LHS == RHS) == (LHSV == RHSV));
+  assert((LHS != RHS) == (LHSV != RHSV));
+  assert((LHS < RHS) == (LHSV < RHSV));
+  assert((LHS <= RHS) == (LHSV <= RHSV));
+  assert((LHS > RHS) == (LHSV > RHSV));
+  assert((LHS >= RHS) == (LHSV >= RHSV));
+}
+
+template <int Dummy> struct NoCompare {};
+
+int main(int, char**)
+{
+  {
+    typedef NoCompare<0> T;
+    typedef std::array<T, 3> C;
+    C c1 = {{}};
+    // expected-error@*:* 2 {{invalid operands to binary expression}}
+    TEST_IGNORE_NODISCARD (c1 == c1);
+    TEST_IGNORE_NODISCARD (c1 < c1);
+  }
+  {
+    typedef NoCompare<1> T;
+    typedef std::array<T, 3> C;
+    C c1 = {{}};
+    // expected-error@*:* 2 {{invalid operands to binary expression}}
+    TEST_IGNORE_NODISCARD (c1 != c1);
+    TEST_IGNORE_NODISCARD (c1 > c1);
+  }
+  {
+    typedef NoCompare<2> T;
+    typedef std::array<T, 0> C;
+    C c1 = {{}};
+    // expected-error@*:* 2 {{invalid operands to binary expression}}
+    TEST_IGNORE_NODISCARD (c1 == c1);
+    TEST_IGNORE_NODISCARD (c1 < c1);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/compare.pass.cpp
new file mode 100644
index 0000000..9726009
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/compare.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// bool operator==(array<T, N> const&, array<T, N> const&);   // constexpr in C++20
+// bool operator!=(array<T, N> const&, array<T, N> const&);   // constexpr in C++20
+// bool operator<(array<T, N> const&, array<T, N> const&);    // constexpr in C++20
+// bool operator<=(array<T, N> const&, array<T, N> const&);   // constexpr in C++20
+// bool operator>(array<T, N> const&, array<T, N> const&);    // constexpr in C++20
+// bool operator>=(array<T, N> const&, array<T, N> const&);   // constexpr in C++20
+
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef std::array<int, 3> C;
+        const C c1 = {1, 2, 3};
+        const C c2 = {1, 2, 3};
+        const C c3 = {3, 2, 1};
+        const C c4 = {1, 2, 1};
+        assert(testComparisons(c1, c2, true, false));
+        assert(testComparisons(c1, c3, false, true));
+        assert(testComparisons(c1, c4, false, false));
+    }
+    {
+        typedef std::array<int, 0> C;
+        const C c1 = {};
+        const C c2 = {};
+        assert(testComparisons(c1, c2, true, false));
+    }
+    {
+        typedef std::array<LessAndEqComp, 3> C;
+        const C c1 = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(3)};
+        const C c2 = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(3)};
+        const C c3 = {LessAndEqComp(3), LessAndEqComp(2), LessAndEqComp(1)};
+        const C c4 = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(1)};
+        assert(testComparisons(c1, c2, true, false));
+        assert(testComparisons(c1, c3, false, true));
+        assert(testComparisons(c1, c4, false, false));
+    }
+    {
+        typedef std::array<LessAndEqComp, 0> C;
+        const C c1 = {};
+        const C c2 = {};
+        assert(testComparisons(c1, c2, true, false));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 20
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/contiguous.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/contiguous.pass.cpp
new file mode 100644
index 0000000..9589e63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/contiguous.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// An array is a contiguous container
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class Container>
+TEST_CONSTEXPR_CXX14 void assert_contiguous(Container const& c)
+{
+    for (size_t i = 0; i < c.size(); ++i)
+        assert(*(c.begin() + i) == *(std::addressof(*c.begin()) + i));
+}
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    assert_contiguous(std::array<double, 0>());
+    assert_contiguous(std::array<double, 1>());
+    assert_contiguous(std::array<double, 2>());
+    assert_contiguous(std::array<double, 3>());
+
+    assert_contiguous(std::array<char, 0>());
+    assert_contiguous(std::array<char, 1>());
+    assert_contiguous(std::array<char, 2>());
+    assert_contiguous(std::array<char, 3>());
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17 // begin() & friends are constexpr in >= C++17 only
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/empty.pass.cpp
new file mode 100644
index 0000000..8b61575
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/empty.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// class array
+
+// constexpr bool empty() const noexcept;
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        typedef std::array<int, 2> C;
+        C c = {};
+        ASSERT_NOEXCEPT(c.empty());
+        assert(!c.empty());
+    }
+    {
+        typedef std::array<int, 0> C;
+        C c = {};
+        ASSERT_NOEXCEPT(c.empty());
+        assert(c.empty());
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+
+#if TEST_STD_VER >= 11
+    // Sanity check for constexpr in C++11
+    {
+        constexpr std::array<int, 3> array = {};
+        static_assert(!array.empty(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/empty.verify.cpp
new file mode 100644
index 0000000..6fa851f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/empty.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// class array
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <array>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+    std::array<int, 1> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    std::array<int, 0> c0;
+    c0.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/front_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/front_back.pass.cpp
new file mode 100644
index 0000000..c37acd0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/front_back.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// reference front();  // constexpr in C++17
+// reference back();   // constexpr in C++17
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+
+        C::reference r1 = c.front();
+        assert(r1 == 1);
+        r1 = 5.5;
+        assert(c[0] == 5.5);
+
+        C::reference r2 = c.back();
+        assert(r2 == 3.5);
+        r2 = 7.5;
+        assert(c[2] == 7.5);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C c = {};
+        ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(c.back());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(c.front());
+        if (c.size() > (0)) { // always false
+            TEST_IGNORE_NODISCARD c.front();
+            TEST_IGNORE_NODISCARD c.back();
+        }
+    }
+    {
+        typedef double T;
+        typedef std::array<const T, 0> C;
+        C c = {};
+        ASSERT_SAME_TYPE(decltype( c.back()), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(    c.back());
+        ASSERT_SAME_TYPE(decltype( c.front()), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(    c.front());
+        if (c.size() > (0)) {
+            TEST_IGNORE_NODISCARD c.front();
+            TEST_IGNORE_NODISCARD c.back();
+        }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/front_back_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/front_back_const.pass.cpp
new file mode 100644
index 0000000..9204663
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/front_back_const.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// const_reference front() const; // constexpr in C++14
+// const_reference back() const;  // constexpr in C++14
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C const c = {1, 2, 3.5};
+        C::const_reference r1 = c.front();
+        assert(r1 == 1);
+
+        C::const_reference r2 = c.back();
+        assert(r2 == 3.5);
+    }
+    {
+        typedef double T;
+        typedef std::array<T, 0> C;
+        C const c = {};
+        ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(c.back());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(c.front());
+        if (c.size() > (0)) { // always false
+            TEST_IGNORE_NODISCARD c.front();
+            TEST_IGNORE_NODISCARD c.back();
+        }
+    }
+    {
+        typedef double T;
+        typedef std::array<const T, 0> C;
+        C const c = {};
+        ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(c.back());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(c.front());
+        if (c.size() > (0)) {
+            TEST_IGNORE_NODISCARD c.front();
+            TEST_IGNORE_NODISCARD c.back();
+        }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/indexing.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/indexing.pass.cpp
new file mode 100644
index 0000000..48a2be0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/indexing.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// reference operator[](size_type); // constexpr in C++17
+// Libc++ marks it as noexcept
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C c = {1, 2, 3.5};
+        LIBCPP_ASSERT_NOEXCEPT(c[0]);
+        ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
+        C::reference r1 = c[0];
+        assert(r1 == 1);
+        r1 = 5.5;
+        assert(c.front() == 5.5);
+
+        C::reference r2 = c[2];
+        assert(r2 == 3.5);
+        r2 = 7.5;
+        assert(c.back() == 7.5);
+    }
+
+    // Test operator[] "works" on zero sized arrays
+    {
+        {
+            typedef double T;
+            typedef std::array<T, 0> C;
+            C c = {};
+            LIBCPP_ASSERT_NOEXCEPT(c[0]);
+            ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
+            if (c.size() > (0)) { // always false
+              C::reference r = c[0];
+              (void)r;
+            }
+        }
+        {
+            typedef double T;
+            typedef std::array<const T, 0> C;
+            C c = {};
+            LIBCPP_ASSERT_NOEXCEPT(c[0]);
+            ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
+            if (c.size() > (0)) { // always false
+              C::reference r = c[0];
+              (void)r;
+            }
+        }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/indexing_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/indexing_const.pass.cpp
new file mode 100644
index 0000000..ce6f8bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/indexing_const.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// const_reference operator[](size_type) const; // constexpr in C++14
+// Libc++ marks it as noexcept
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        typedef double T;
+        typedef std::array<T, 3> C;
+        C const c = {1, 2, 3.5};
+        LIBCPP_ASSERT_NOEXCEPT(c[0]);
+        ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
+        C::const_reference r1 = c[0];
+        assert(r1 == 1);
+        C::const_reference r2 = c[2];
+        assert(r2 == 3.5);
+    }
+    // Test operator[] "works" on zero sized arrays
+    {
+        {
+            typedef double T;
+            typedef std::array<T, 0> C;
+            C const c = {};
+            LIBCPP_ASSERT_NOEXCEPT(c[0]);
+            ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
+            if (c.size() > (0)) { // always false
+                C::const_reference r = c[0];
+                (void)r;
+            }
+        }
+        {
+            typedef double T;
+            typedef std::array<T const, 0> C;
+            C const c = {};
+            LIBCPP_ASSERT_NOEXCEPT(c[0]);
+            ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
+            if (c.size() > (0)) { // always false
+              C::const_reference r = c[0];
+              (void)r;
+            }
+        }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..5ab3061
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <array>
+
+#include <iterator>
+
+using iterator = std::array<int, 10>::iterator;
+using const_iterator = std::array<int, 10>::const_iterator;
+using reverse_iterator = std::array<int, 10>::reverse_iterator;
+using const_reverse_iterator = std::array<int, 10>::const_reverse_iterator;
+
+static_assert(std::contiguous_iterator<iterator>);
+static_assert(std::indirectly_writable<iterator, int>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<iterator, iterator>);
+static_assert(std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, iterator>);
+static_assert( std::indirectly_movable_storable<iterator, iterator>);
+static_assert(!std::indirectly_movable<iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_movable<iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_copyable<iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::contiguous_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, int>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<const_iterator, iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_movable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/iterators.pass.cpp
new file mode 100644
index 0000000..106bc45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/iterators.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// iterator begin() noexcept;                         // constexpr in C++17
+// const_iterator begin() const noexcept;             // constexpr in C++17
+// iterator end() noexcept;                           // constexpr in C++17
+// const_iterator end() const noexcept;               // constexpr in C++17
+//
+// reverse_iterator rbegin() noexcept;                // constexpr in C++17
+// const_reverse_iterator rbegin() const noexcept;    // constexpr in C++17
+// reverse_iterator rend() noexcept;                  // constexpr in C++17
+// const_reverse_iterator rend() const noexcept;      // constexpr in C++17
+//
+// const_iterator cbegin() const noexcept;            // constexpr in C++17
+// const_iterator cend() const noexcept;              // constexpr in C++17
+// const_reverse_iterator crbegin() const noexcept;   // constexpr in C++17
+// const_reverse_iterator crend() const noexcept;     // constexpr in C++17
+
+#include <array>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NoDefault {
+    TEST_CONSTEXPR NoDefault(int) { }
+};
+
+template <class T>
+TEST_CONSTEXPR_CXX17 void check_noexcept(T& c) {
+    ASSERT_NOEXCEPT(c.begin());
+    ASSERT_NOEXCEPT(c.end());
+    ASSERT_NOEXCEPT(c.cbegin());
+    ASSERT_NOEXCEPT(c.cend());
+    ASSERT_NOEXCEPT(c.rbegin());
+    ASSERT_NOEXCEPT(c.rend());
+    ASSERT_NOEXCEPT(c.crbegin());
+    ASSERT_NOEXCEPT(c.crend());
+
+    const T& cc = c; (void)cc;
+    ASSERT_NOEXCEPT(cc.begin());
+    ASSERT_NOEXCEPT(cc.end());
+    ASSERT_NOEXCEPT(cc.rbegin());
+    ASSERT_NOEXCEPT(cc.rend());
+}
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    {
+        typedef std::array<int, 5> C;
+        C array = {};
+        check_noexcept(array);
+        typename C::iterator i = array.begin();
+        typename C::const_iterator j = array.cbegin();
+        assert(i == j);
+    }
+    {
+        typedef std::array<int, 0> C;
+        C array = {};
+        check_noexcept(array);
+        typename C::iterator i = array.begin();
+        typename C::const_iterator j = array.cbegin();
+        assert(i == j);
+    }
+
+    {
+        typedef std::array<int, 0> C;
+        C array = {};
+        check_noexcept(array);
+        typename C::iterator i = array.begin();
+        typename C::const_iterator j = array.cbegin();
+        assert(i == array.end());
+        assert(j == array.cend());
+    }
+    {
+        typedef std::array<int, 1> C;
+        C array = {1};
+        check_noexcept(array);
+        typename C::iterator i = array.begin();
+        assert(*i == 1);
+        assert(&*i == array.data());
+        *i = 99;
+        assert(array[0] == 99);
+    }
+    {
+        typedef std::array<int, 2> C;
+        C array = {1, 2};
+        check_noexcept(array);
+        typename C::iterator i = array.begin();
+        assert(*i == 1);
+        assert(&*i == array.data());
+        *i = 99;
+        assert(array[0] == 99);
+        assert(array[1] == 2);
+    }
+    {
+        typedef std::array<double, 3> C;
+        C array = {1, 2, 3.5};
+        check_noexcept(array);
+        typename C::iterator i = array.begin();
+        assert(*i == 1);
+        assert(&*i == array.data());
+        *i = 5.5;
+        assert(array[0] == 5.5);
+        assert(array[1] == 2.0);
+    }
+    {
+        typedef std::array<NoDefault, 0> C;
+        C array = {};
+        typename C::iterator ib = array.begin();
+        typename C::iterator ie = array.end();
+        assert(ib == ie);
+    }
+
+#if TEST_STD_VER >= 14
+    { // N3644 testing
+        {
+            typedef std::array<int, 5> C;
+            C::iterator ii1{}, ii2{};
+            C::iterator ii4 = ii1;
+            C::const_iterator cii{};
+            assert(ii1 == ii2);
+            assert(ii1 == ii4);
+            assert(ii1 == cii);
+
+            assert(!(ii1 != ii2));
+            assert(!(ii1 != cii));
+
+            C c = {};
+            check_noexcept(c);
+            assert(c.begin()   == std::begin(c));
+            assert(c.cbegin()  == std::cbegin(c));
+            assert(c.rbegin()  == std::rbegin(c));
+            assert(c.crbegin() == std::crbegin(c));
+            assert(c.end()     == std::end(c));
+            assert(c.cend()    == std::cend(c));
+            assert(c.rend()    == std::rend(c));
+            assert(c.crend()   == std::crend(c));
+
+            assert(std::begin(c)   != std::end(c));
+            assert(std::rbegin(c)  != std::rend(c));
+            assert(std::cbegin(c)  != std::cend(c));
+            assert(std::crbegin(c) != std::crend(c));
+        }
+        {
+            typedef std::array<int, 0> C;
+            C::iterator ii1{}, ii2{};
+            C::iterator ii4 = ii1;
+            C::const_iterator cii{};
+            assert(ii1 == ii2);
+            assert(ii1 == ii4);
+
+            assert(!(ii1 != ii2));
+
+            assert( (ii1 == cii));
+            assert( (cii == ii1));
+            assert(!(ii1 != cii));
+            assert(!(cii != ii1));
+            assert(!(ii1 <  cii));
+            assert(!(cii <  ii1));
+            assert( (ii1 <= cii));
+            assert( (cii <= ii1));
+            assert(!(ii1 >  cii));
+            assert(!(cii >  ii1));
+            assert( (ii1 >= cii));
+            assert( (cii >= ii1));
+            assert(cii - ii1 == 0);
+            assert(ii1 - cii == 0);
+
+            C c = {};
+            check_noexcept(c);
+            assert(c.begin()   == std::begin(c));
+            assert(c.cbegin()  == std::cbegin(c));
+            assert(c.rbegin()  == std::rbegin(c));
+            assert(c.crbegin() == std::crbegin(c));
+            assert(c.end()     == std::end(c));
+            assert(c.cend()    == std::cend(c));
+            assert(c.rend()    == std::rend(c));
+            assert(c.crend()   == std::crend(c));
+
+            assert(std::begin(c)   == std::end(c));
+            assert(std::rbegin(c)  == std::rend(c));
+            assert(std::cbegin(c)  == std::cend(c));
+            assert(std::crbegin(c) == std::crend(c));
+        }
+    }
+#endif
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/max_size.pass.cpp
new file mode 100644
index 0000000..8ca8cd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/max_size.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// class array
+
+// constexpr bool max_size() const noexcept;
+
+#include <array>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14 bool tests()
+{
+    {
+        typedef std::array<int, 2> C;
+        C c = {};
+        ASSERT_NOEXCEPT(c.max_size());
+        assert(c.max_size() == 2);
+    }
+    {
+        typedef std::array<int, 0> C;
+        C c = {};
+        ASSERT_NOEXCEPT(c.max_size());
+        assert(c.max_size() == 0);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 14
+    static_assert(tests(), "");
+#endif
+
+#if TEST_STD_VER >= 11
+    // Sanity check for constexpr in C++11
+    {
+        constexpr std::array<int, 3> array = {};
+        static_assert(array.max_size() == 3, "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..6e3f2a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// array
+
+#include <array>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::array<int, 10>;
+
+
+static_assert(!std::ranges::view<range>);
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::random_access_range<range>);
+static_assert(std::ranges::contiguous_range<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(!std::ranges::view<range const>);
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::random_access_range<range const>);
+static_assert(std::ranges::contiguous_range<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/size_and_alignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/size_and_alignment.pass.cpp
new file mode 100644
index 0000000..2422156
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/size_and_alignment.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <class T, size_t N>
+// struct array
+
+// Test the size and alignment matches that of an array of a given type.
+
+// Ignore error about requesting a large alignment not being ABI compatible with older AIX systems.
+#if defined(_AIX)
+# pragma clang diagnostic ignored "-Waix-compat"
+#endif
+
+#include <array>
+#include <iterator>
+#include <type_traits>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T, size_t Size>
+struct MyArray {
+  T elems[Size];
+};
+
+template <class T, size_t Size>
+void test() {
+  typedef T CArrayT[Size == 0 ? 1 : Size];
+  typedef std::array<T, Size> ArrayT;
+  typedef MyArray<T, Size == 0 ? 1 : Size> MyArrayT;
+  static_assert(sizeof(ArrayT) == sizeof(CArrayT), "");
+  static_assert(sizeof(ArrayT) == sizeof(MyArrayT), "");
+  static_assert(TEST_ALIGNOF(ArrayT) == TEST_ALIGNOF(MyArrayT), "");
+}
+
+template <class T>
+void test_type() {
+  test<T, 1>();
+  test<T, 42>();
+  test<T, 0>();
+}
+
+#if TEST_STD_VER >= 11
+struct alignas(alignof(std::max_align_t) * 2) TestType1 {
+
+};
+
+struct alignas(alignof(std::max_align_t) * 2) TestType2 {
+  char data[1000];
+};
+
+struct alignas(alignof(std::max_align_t)) TestType3 {
+  char data[1000];
+};
+#endif
+
+int main(int, char**) {
+  test_type<char>();
+  test_type<int>();
+  test_type<double>();
+  test_type<long double>();
+
+#if TEST_STD_VER >= 11
+  test_type<std::max_align_t>();
+  test_type<TestType1>();
+  test_type<TestType2>();
+  test_type<TestType3>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/array/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/types.pass.cpp
new file mode 100644
index 0000000..f86e008
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/array/types.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// template <class T, size_t N >
+// struct array
+// {
+//     // types:
+//     typedef T& reference;
+//     typedef const T& const_reference;
+//     typedef implementation defined iterator;
+//     typedef implementation defined const_iterator;
+//     typedef T value_type;
+//     typedef T* pointer;
+//     typedef size_t size_type;
+//     typedef ptrdiff_t difference_type;
+//     typedef T value_type;
+//     typedef std::reverse_iterator<iterator> reverse_iterator;
+//     typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+#include <array>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class C>
+void test_iterators() {
+    typedef std::iterator_traits<typename C::iterator> ItT;
+    typedef std::iterator_traits<typename C::const_iterator> CItT;
+    static_assert((std::is_same<typename ItT::iterator_category, std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<typename ItT::value_type, typename C::value_type>::value), "");
+    static_assert((std::is_same<typename ItT::reference, typename C::reference>::value), "");
+    static_assert((std::is_same<typename ItT::pointer, typename C::pointer>::value), "");
+    static_assert((std::is_same<typename ItT::difference_type, typename C::difference_type>::value), "");
+
+    static_assert((std::is_same<typename CItT::iterator_category, std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<typename CItT::value_type, typename C::value_type>::value), "");
+    static_assert((std::is_same<typename CItT::reference, typename C::const_reference>::value), "");
+    static_assert((std::is_same<typename CItT::pointer, typename C::const_pointer>::value), "");
+    static_assert((std::is_same<typename CItT::difference_type, typename C::difference_type>::value), "");
+}
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        typedef std::array<T, 10> C;
+        static_assert((std::is_same<C::reference, T&>::value), "");
+        static_assert((std::is_same<C::const_reference, const T&>::value), "");
+        LIBCPP_STATIC_ASSERT((std::is_same<C::iterator, T*>::value), "");
+        LIBCPP_STATIC_ASSERT((std::is_same<C::const_iterator, const T*>::value), "");
+        test_iterators<C>();
+        static_assert((std::is_same<C::pointer, T*>::value), "");
+        static_assert((std::is_same<C::const_pointer, const T*>::value), "");
+        static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+        static_assert((std::is_same<C::reverse_iterator, std::reverse_iterator<C::iterator> >::value), "");
+        static_assert((std::is_same<C::const_reverse_iterator, std::reverse_iterator<C::const_iterator> >::value), "");
+
+        static_assert((std::is_signed<typename C::difference_type>::value), "");
+        static_assert((std::is_unsigned<typename C::size_type>::value), "");
+        static_assert((std::is_same<typename C::difference_type,
+            typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+        static_assert((std::is_same<typename C::difference_type,
+            typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+    {
+        typedef int* T;
+        typedef std::array<T, 0> C;
+        static_assert((std::is_same<C::reference, T&>::value), "");
+        static_assert((std::is_same<C::const_reference, const T&>::value), "");
+        LIBCPP_STATIC_ASSERT((std::is_same<C::iterator, T*>::value), "");
+        LIBCPP_STATIC_ASSERT((std::is_same<C::const_iterator, const T*>::value), "");
+        test_iterators<C>();
+        static_assert((std::is_same<C::pointer, T*>::value), "");
+        static_assert((std::is_same<C::const_pointer, const T*>::value), "");
+        static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+        static_assert((std::is_same<C::reverse_iterator, std::reverse_iterator<C::iterator> >::value), "");
+        static_assert((std::is_same<C::const_reverse_iterator, std::reverse_iterator<C::const_iterator> >::value), "");
+
+        static_assert((std::is_signed<typename C::difference_type>::value), "");
+        static_assert((std::is_unsigned<typename C::size_type>::value), "");
+        static_assert((std::is_same<typename C::difference_type,
+            typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+        static_assert((std::is_same<typename C::difference_type,
+            typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/abi.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/abi.compile.pass.cpp
new file mode 100644
index 0000000..74cbfe3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/abi.compile.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <deque>
+
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+template <class T>
+class small_pointer {
+  uint16_t offset;
+};
+
+template <class T>
+class small_iter_allocator {
+public:
+  using value_type      = T;
+  using pointer         = small_pointer<T>;
+  using size_type       = int16_t;
+  using difference_type = int16_t;
+
+  small_iter_allocator() TEST_NOEXCEPT {}
+
+  template <class U>
+  small_iter_allocator(small_iter_allocator<U>) TEST_NOEXCEPT {}
+
+  T* allocate(std::size_t n);
+  void deallocate(T* p, std::size_t);
+
+  friend bool operator==(small_iter_allocator, small_iter_allocator) { return true; }
+  friend bool operator!=(small_iter_allocator, small_iter_allocator) { return false; }
+};
+
+#if __SIZE_WIDTH__ == 64
+
+static_assert(sizeof(std::deque<int>) == 48, "");
+static_assert(sizeof(std::deque<int, min_allocator<int> >) == 48, "");
+static_assert(sizeof(std::deque<int, test_allocator<int> >) == 80, "");
+static_assert(sizeof(std::deque<int, small_iter_allocator<int> >) == 12, "");
+
+static_assert(sizeof(std::deque<char>) == 48, "");
+static_assert(sizeof(std::deque<char, min_allocator<char> >) == 48, "");
+static_assert(sizeof(std::deque<char, test_allocator<char> >) == 80, "");
+static_assert(sizeof(std::deque<char, small_iter_allocator<char> >) == 12, "");
+
+static_assert(TEST_ALIGNOF(std::deque<int>) == 8, "");
+static_assert(TEST_ALIGNOF(std::deque<int, min_allocator<int> >) == 8, "");
+static_assert(TEST_ALIGNOF(std::deque<int, test_allocator<int> >) == 8, "");
+static_assert(TEST_ALIGNOF(std::deque<int, small_iter_allocator<int> >) == 2, "");
+
+static_assert(TEST_ALIGNOF(std::deque<char>) == 8, "");
+static_assert(TEST_ALIGNOF(std::deque<char, min_allocator<char> >) == 8, "");
+static_assert(TEST_ALIGNOF(std::deque<char, test_allocator<char> >) == 8, "");
+static_assert(TEST_ALIGNOF(std::deque<char, small_iter_allocator<char> >) == 2, "");
+
+#elif __SIZE_WIDTH__ == 32
+
+static_assert(sizeof(std::deque<int>) == 24, "");
+static_assert(sizeof(std::deque<int, min_allocator<int> >) == 24, "");
+static_assert(sizeof(std::deque<int, test_allocator<int> >) == 48, "");
+static_assert(sizeof(std::deque<int, small_iter_allocator<int> >) == 12, "");
+
+static_assert(sizeof(std::deque<char>) == 24, "");
+static_assert(sizeof(std::deque<char, min_allocator<char> >) == 24, "");
+static_assert(sizeof(std::deque<char, test_allocator<char> >) == 48, "");
+static_assert(sizeof(std::deque<char, small_iter_allocator<char> >) == 12, "");
+
+static_assert(TEST_ALIGNOF(std::deque<int>) == 4, "");
+static_assert(TEST_ALIGNOF(std::deque<int, min_allocator<int> >) == 4, "");
+static_assert(TEST_ALIGNOF(std::deque<int, test_allocator<int> >) == 4, "");
+static_assert(TEST_ALIGNOF(std::deque<int, small_iter_allocator<int> >) == 2, "");
+
+static_assert(TEST_ALIGNOF(std::deque<char>) == 4, "");
+static_assert(TEST_ALIGNOF(std::deque<char, min_allocator<char> >) == 4, "");
+static_assert(TEST_ALIGNOF(std::deque<char, test_allocator<char> >) == 4, "");
+static_assert(TEST_ALIGNOF(std::deque<char, small_iter_allocator<char> >) == 2, "");
+
+#else
+#  error size_t has an unexpected size
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..287faf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+//   The container's value type must be the same as the allocator's value type
+
+#include <deque>
+
+int main(int, char**)
+{
+    std::deque<int, std::allocator<long> > d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/compare.pass.cpp
new file mode 100644
index 0000000..fc7c07e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/compare.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// template<class T, class Alloc>
+// bool operator==(const std::deque<T, Alloc>& lhs,
+//                 const std::deque<T,Alloc>& rhs);
+
+// template<class T, class Alloc>
+// bool operator!=(const std::deque<T,Alloc>& lhs,
+//                 const std::deque<T,Alloc>& rhs);
+
+// template<class T, class Alloc>
+// bool operator<(const std::deque<T,Alloc>& lhs,
+//                const std::deque<T,Alloc>& rhs);
+
+// template<class T, class Alloc>
+// bool operator<=(const std::deque<T,Alloc>& lhs,
+//                 const std::deque<T,Alloc>& rhs);
+
+// template<class T, class Alloc>
+// bool operator>(const std::deque<T,Alloc>& lhs,
+//                const std::deque<T,Alloc>& rhs);
+
+// template<class T, class Alloc>
+// bool operator>=(const std::deque<T,Alloc>& lhs,
+//                 const std::deque<T,Alloc>& rhs);
+
+#include <deque>
+#include <cassert>
+
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    {
+        const std::deque<int> d1, d2;
+        assert(testComparisons(d1, d2, true, false));
+    }
+    {
+        const std::deque<int> d1(1, 1), d2(1, 1);
+        assert(testComparisons(d1, d2, true, false));
+    }
+    {
+        int items[3] = {1, 2, 3};
+        const std::deque<int> d1(items, items + 3);
+        const std::deque<int> d2(items, items + 3);
+        assert(testComparisons(d1, d2, true, false));
+    }
+    {
+        const std::deque<int> d1(1, 1), d2;
+        assert(testComparisons(d1, d2, false, false));
+    }
+    {
+        const std::deque<int> d1(1, 1), d2(1, 2);
+        assert(testComparisons(d1, d2, false, true));
+    }
+    {
+        int items1[2] = {1, 2};
+        int items2[2] = {1, 3};
+        const std::deque<int> d1(items1, items1 + 2);
+        const std::deque<int> d2(items2, items2 + 2);
+        assert(testComparisons(d1, d2, false, true));
+    }
+    {
+        int items1[2] = {2, 2};
+        int items2[2] = {1, 3};
+        const std::deque<int> d1(items1, items1 + 2);
+        const std::deque<int> d2(items2, items2 + 2);
+        assert(testComparisons(d1, d2, false, false));
+    }
+    {
+        const std::deque<LessAndEqComp> d1, d2;
+        assert(testComparisons(d1, d2, true, false));
+    }
+    {
+        const std::deque<LessAndEqComp> d1(1, LessAndEqComp(1));
+        const std::deque<LessAndEqComp> d2(1, LessAndEqComp(1));
+        assert(testComparisons(d1, d2, true, false));
+    }
+    {
+        LessAndEqComp items[3] = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(3)};
+        const std::deque<LessAndEqComp> d1(items, items + 3);
+        const std::deque<LessAndEqComp> d2(items, items + 3);
+        assert(testComparisons(d1, d2, true, false));
+    }
+    {
+        const std::deque<LessAndEqComp> d1(1, LessAndEqComp(1));
+        const std::deque<LessAndEqComp> d2;
+        assert(testComparisons(d1, d2, false, false));
+    }
+    {
+        const std::deque<LessAndEqComp> d1(1, LessAndEqComp(1));
+        const std::deque<LessAndEqComp> d2(1, LessAndEqComp(2));
+        assert(testComparisons(d1, d2, false, true));
+    }
+    {
+        LessAndEqComp items1[2] = {LessAndEqComp(1), LessAndEqComp(2)};
+        LessAndEqComp items2[2] = {LessAndEqComp(1), LessAndEqComp(3)};
+        const std::deque<LessAndEqComp> d1(items1, items1 + 2);
+        const std::deque<LessAndEqComp> d2(items2, items2 + 2);
+        assert(testComparisons(d1, d2, false, true));
+    }
+    {
+        LessAndEqComp items1[2] = {LessAndEqComp(2), LessAndEqComp(2)};
+        LessAndEqComp items2[2] = {LessAndEqComp(1), LessAndEqComp(3)};
+        const std::deque<LessAndEqComp> d1(items1, items1 + 2);
+        const std::deque<LessAndEqComp> d2(items2, items2 + 2);
+        assert(testComparisons(d1, d2, false, false));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/access.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/access.pass.cpp
new file mode 100644
index 0000000..583dba2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/access.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+//       reference operator[](size_type __i);
+// const_reference operator[](size_type __i) const;
+//
+//       reference at(size_type __i);
+// const_reference at(size_type __i) const;
+//
+//       reference front();
+// const_reference front() const;
+//
+//       reference back();
+// const_reference back() const;
+// libc++ marks these as 'noexcept'
+
+#include <deque>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::deque<int> C;
+        C c = make<std::deque<int> >(10);
+        ASSERT_SAME_TYPE(decltype(c[0]), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c[0]);
+        LIBCPP_ASSERT_NOEXCEPT(   c.front());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c.back());
+        ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
+        for (int i = 0; i < 10; ++i)
+            assert(c[i] == i);
+        for (int i = 0; i < 10; ++i)
+            assert(c.at(i) == i);
+        assert(c.front() == 0);
+        assert(c.back() == 9);
+    }
+    {
+        typedef std::deque<int> C;
+        const C c = make<std::deque<int> >(10);
+        ASSERT_SAME_TYPE(decltype(c[0]), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c[0]);
+        LIBCPP_ASSERT_NOEXCEPT(   c.front());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c.back());
+        ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
+        for (int i = 0; i < 10; ++i)
+            assert(c[i] == i);
+        for (int i = 0; i < 10; ++i)
+            assert(c.at(i) == i);
+        assert(c.front() == 0);
+        assert(c.back() == 9);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::deque<int, min_allocator<int>> C;
+        C c = make<std::deque<int, min_allocator<int>> >(10);
+        ASSERT_SAME_TYPE(decltype(c[0]), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c[0]);
+        LIBCPP_ASSERT_NOEXCEPT(   c.front());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c.back());
+        ASSERT_SAME_TYPE(decltype(c.back()), C::reference);
+        for (int i = 0; i < 10; ++i)
+            assert(c[i] == i);
+        for (int i = 0; i < 10; ++i)
+            assert(c.at(i) == i);
+        assert(c.front() == 0);
+        assert(c.back() == 9);
+    }
+    {
+        typedef std::deque<int, min_allocator<int>> C;
+        const C c = make<std::deque<int, min_allocator<int>> >(10);
+        ASSERT_SAME_TYPE(decltype(c[0]), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c[0]);
+        LIBCPP_ASSERT_NOEXCEPT(   c.front());
+        ASSERT_SAME_TYPE(decltype(c.front()), C::const_reference);
+        LIBCPP_ASSERT_NOEXCEPT(   c.back());
+        ASSERT_SAME_TYPE(decltype(c.back()), C::const_reference);
+        for (int i = 0; i < 10; ++i)
+            assert(c[i] == i);
+        for (int i = 0; i < 10; ++i)
+            assert(c.at(i) == i);
+        assert(c.front() == 0);
+        assert(c.back() == 9);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/empty.pass.cpp
new file mode 100644
index 0000000..3885941
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// class deque
+
+// bool empty() const noexcept;
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::deque<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::deque<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/empty.verify.cpp
new file mode 100644
index 0000000..01822e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// class deque
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <deque>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::deque<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/max_size.pass.cpp
new file mode 100644
index 0000000..230a465
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/max_size.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <deque>
+#include <limits>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    typedef limited_allocator<int, 10> A;
+    typedef std::deque<int, A> C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<int, (size_t)-1> A;
+    typedef std::deque<int, A> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+  }
+  {
+    typedef std::deque<char> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/resize_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/resize_size.pass.cpp
new file mode 100644
index 0000000..641519b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/resize_size.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void resize(size_type n);
+
+#include <deque>
+#include <algorithm>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1, int size)
+{
+    typedef typename C::const_iterator CI;
+    typename C::size_type c1_osize = c1.size();
+    c1.resize(size);
+    assert(c1.size() == static_cast<std::size_t>(size));
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    CI i = c1.begin();
+    for (int j = 0; static_cast<std::size_t>(j) < std::min(c1_osize, c1.size()); ++j, ++i)
+        assert(*i == j);
+    for (std::size_t j = c1_osize; j < c1.size(); ++j, ++i)
+        assert(*i == 0);
+}
+
+template <class C>
+void
+testN(int start, int N, int M)
+{
+    C c1 = make<C>(N, start);
+    test(c1, M);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int, min_allocator<int>>>(rng[i], rng[j], rng[k]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/resize_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/resize_size_value.pass.cpp
new file mode 100644
index 0000000..2ab7400
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/resize_size_value.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void resize(size_type n, const value_type& v);
+
+#include <deque>
+#include <algorithm>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1, int size, int x)
+{
+    typedef typename C::const_iterator CI;
+    typename C::size_type c1_osize = c1.size();
+    c1.resize(size, x);
+    assert(c1.size() == static_cast<std::size_t>(size));
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    CI i = c1.begin();
+    for (int j = 0; static_cast<std::size_t>(j) < std::min(c1_osize, c1.size()); ++j, ++i)
+        assert(*i == j);
+    for (std::size_t j = c1_osize; j < c1.size(); ++j, ++i)
+        assert(*i == x);
+}
+
+template <class C>
+void
+testN(int start, int N, int M)
+{
+    C c1 = make<C>(N, start);
+    test(c1, M, -10);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int, min_allocator<int>>>(rng[i], rng[j], rng[k]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/shrink_to_fit.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/shrink_to_fit.pass.cpp
new file mode 100644
index 0000000..bde2eaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/shrink_to_fit.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void shrink_to_fit();
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1)
+{
+    C s = c1;
+    c1.shrink_to_fit();
+    assert(c1 == s);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    C c1 = make<C>(N, start);
+    test(c1);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/size.pass.cpp
new file mode 100644
index 0000000..c70abe4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.capacity/size.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// class deque
+
+// size_type size() const noexcept;
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::deque<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(C::value_type(2));
+    assert(c.size() == 1);
+    c.push_back(C::value_type(1));
+    assert(c.size() == 2);
+    c.push_back(C::value_type(3));
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::deque<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(C::value_type(2));
+    assert(c.size() == 1);
+    c.push_back(C::value_type(1));
+    assert(c.size() == 2);
+    c.push_back(C::value_type(3));
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/alloc.pass.cpp
new file mode 100644
index 0000000..8e4560e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/alloc.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// explicit deque(const allocator_type& a);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../NotConstructible.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test(const Allocator& a)
+{
+    std::deque<T, Allocator> d(a);
+    assert(d.size() == 0);
+    assert(d.get_allocator() == a);
+}
+
+int main(int, char**)
+{
+    test<int>(std::allocator<int>());
+    test<NotConstructible>(test_allocator<NotConstructible>(3));
+#if TEST_STD_VER >= 11
+    test<int>(min_allocator<int>());
+    test<NotConstructible>(min_allocator<NotConstructible>{});
+    test<int>(explicit_allocator<int>());
+    test<NotConstructible>(explicit_allocator<NotConstructible>{});
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..bf38932
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// void assign(initializer_list<value_type> il);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::deque<int> d;
+    d.assign({3, 4, 5, 6});
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::deque<int, min_allocator<int>> d;
+    d.assign({3, 4, 5, 6});
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp
new file mode 100644
index 0000000..c8ebd68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_iter_iter.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// template <class InputIterator>
+//   void assign(InputIterator f, InputIterator l);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#endif
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1, const C& c2)
+{
+    c1.assign(c2.begin(), c2.end());
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    assert(c1 == c2);
+}
+
+template <class C>
+void
+testN(int start, int N, int M)
+{
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(M);
+    test(c1, c2);
+}
+
+template <class C>
+void
+testI(C& c1, const C& c2)
+{
+    typedef typename C::const_iterator CI;
+    typedef cpp17_input_iterator<CI> ICI;
+    c1.assign(ICI(c2.begin()), ICI(c2.end()));
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    assert(c1 == c2);
+}
+
+template <class C>
+void
+testNI(int start, int N, int M)
+{
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(M);
+    testI(c1, c2);
+}
+
+void basic_test()
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    testNI<std::deque<int> >(1500, 2000, 1000);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
+    testNI<std::deque<int, min_allocator<int>> >(1500, 2000, 1000);
+    }
+#endif
+}
+
+template <class It>
+void test_emplacable_concept() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructibleMoveableAndAssignable<int>;
+    {
+      std::deque<T> v;
+      v.assign(It(arr1), It(std::end(arr1)));
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v;
+      v.assign(It(arr2), It(std::end(arr2)));
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+}
+
+void test_iterators() {
+  test_emplacable_concept<cpp17_input_iterator<int*> >();
+  test_emplacable_concept<forward_iterator<int*> >();
+  test_emplacable_concept<bidirectional_iterator<int*> >();
+  test_emplacable_concept<random_access_iterator<int*> >();
+#if TEST_STD_VER > 17
+  test_emplacable_concept<contiguous_iterator<int*> >();
+#endif
+  test_emplacable_concept<int*>();
+}
+
+int main(int, char**) {
+  basic_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_size_value.pass.cpp
new file mode 100644
index 0000000..d5cafec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/assign_size_value.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void assign(size_type n, const value_type& v);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1, int size, int v)
+{
+    typedef typename C::const_iterator CI;
+    c1.assign(size, v);
+    assert(c1.size() == static_cast<std::size_t>(size));
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    for (CI i = c1.begin(); i != c1.end(); ++i)
+        assert(*i == v);
+}
+
+template <class C>
+void
+testN(int start, int N, int M)
+{
+    C c1 = make<C>(N, start);
+    test(c1, M, -10);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp
new file mode 100644
index 0000000..2d42ee3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/copy.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque(const deque&);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+void
+test(const C& x)
+{
+    C c(x);
+    assert(c == x);
+}
+
+int main(int, char**)
+{
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int>(ab, an));
+    }
+    {
+        std::deque<int, test_allocator<int> > v(3, 2, test_allocator<int>(5));
+        std::deque<int, test_allocator<int> > v2 = v;
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::deque<int, other_allocator<int> > v(3, 2, other_allocator<int>(5));
+        std::deque<int, other_allocator<int> > v2 = v;
+        assert(v2 == v);
+        assert(v2.get_allocator() == other_allocator<int>(-2));
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int, min_allocator<int>>(ab, an));
+    }
+    {
+        std::deque<int, min_allocator<int> > v(3, 2, min_allocator<int>());
+        std::deque<int, min_allocator<int> > v2 = v;
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..4e75ff7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/copy_alloc.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque(const deque& c, const allocator_type& a);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+void
+test(const C& x, const typename C::allocator_type& a)
+{
+    C c(x, a);
+    assert(c == x);
+    assert(c.get_allocator() == a);
+}
+
+int main(int, char**)
+{
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int, test_allocator<int> >(ab, an, test_allocator<int>(3)),
+                                                           test_allocator<int>(4));
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int, other_allocator<int> >(ab, an, other_allocator<int>(3)),
+                                                            other_allocator<int>(4));
+    }
+#if TEST_STD_VER >= 11
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int, min_allocator<int> >(ab, an, min_allocator<int>()),
+                                                          min_allocator<int>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/deduct.fail.cpp
new file mode 100644
index 0000000..044669a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/deduct.fail.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    deque(InputIterator, InputIterator, Allocator = Allocator())
+//    -> deque<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <deque>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+struct A {};
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+
+//  Test the implicit deduction guides
+    {
+//  deque (allocator &)
+    std::deque deq((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'deque'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      deque<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/deduct.pass.cpp
new file mode 100644
index 0000000..216dcac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/deduct.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    deque(InputIterator, InputIterator, Allocator = Allocator())
+//    -> deque<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <deque>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+    const int arr[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::deque deq(std::begin(arr), std::end(arr));
+
+    static_assert(std::is_same_v<decltype(deq), std::deque<int>>, "");
+    assert(std::equal(deq.begin(), deq.end(), std::begin(arr), std::end(arr)));
+    }
+
+    {
+    const long arr[] = {INT_MAX, 1L, 2L, 3L };
+    std::deque deq(std::begin(arr), std::end(arr), std::allocator<long>());
+    static_assert(std::is_same_v<decltype(deq)::value_type, long>, "");
+    assert(deq.size() == 4);
+    assert(deq[0] == INT_MAX);
+    assert(deq[1] == 1L);
+    assert(deq[2] == 2L);
+    }
+
+//  Test the implicit deduction guides
+
+    {
+//  We don't expect this one to work.
+//  std::deque deq(std::allocator<int>()); // deque (allocator &)
+    }
+
+    {
+    std::deque deq(1, A{}); // deque (size_type, T)
+    static_assert(std::is_same_v<decltype(deq)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(deq)::allocator_type, std::allocator<A>>, "");
+    assert(deq.size() == 1);
+    }
+
+    {
+    std::deque deq(1, A{}, test_allocator<A>()); // deque (size_type, T, allocator)
+    static_assert(std::is_same_v<decltype(deq)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(deq)::allocator_type, test_allocator<A>>, "");
+    assert(deq.size() == 1);
+    }
+
+    {
+    std::deque deq{1U, 2U, 3U, 4U, 5U}; // deque(initializer-list)
+    static_assert(std::is_same_v<decltype(deq)::value_type, unsigned>, "");
+    assert(deq.size() == 5);
+    assert(deq[2] == 3U);
+    }
+
+    {
+    std::deque deq({1.0, 2.0, 3.0, 4.0}, test_allocator<double>()); // deque(initializer-list, allocator)
+    static_assert(std::is_same_v<decltype(deq)::value_type, double>, "");
+    static_assert(std::is_same_v<decltype(deq)::allocator_type, test_allocator<double>>, "");
+    assert(deq.size() == 4);
+    assert(deq[3] == 4.0);
+    }
+
+    {
+    std::deque<long double> source;
+    std::deque deq(source); // deque(deque &)
+    static_assert(std::is_same_v<decltype(deq)::value_type, long double>, "");
+    static_assert(std::is_same_v<decltype(deq)::allocator_type, std::allocator<long double>>, "");
+    assert(deq.size() == 0);
+    }
+
+    {
+        typedef test_allocator<short> Alloc;
+        typedef test_allocator<int> ConvertibleToAlloc;
+
+        {
+        std::deque<short, Alloc> source;
+        std::deque deq(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(deq), decltype(source)>);
+        }
+
+        {
+        std::deque<short, Alloc> source;
+        std::deque deq(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(deq), decltype(source)>);
+        }
+
+        {
+        std::deque<short, Alloc> source;
+        std::deque deq(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(deq), decltype(source)>);
+        }
+
+        {
+        std::deque<short, Alloc> source;
+        std::deque deq(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(deq), decltype(source)>);
+        }
+    }
+
+    SequenceContainerDeductionGuidesSfinaeAway<std::deque, std::deque<int>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/default.pass.cpp
new file mode 100644
index 0000000..b7c2ef1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/default.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque()
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../NotConstructible.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test()
+{
+    std::deque<T, Allocator> d;
+    assert(d.size() == 0);
+#if TEST_STD_VER >= 11
+    std::deque<T, Allocator> d1 = {};
+    assert(d1.size() == 0);
+#endif
+}
+
+int main(int, char**)
+{
+    test<int, std::allocator<int> >();
+    test<NotConstructible, limited_allocator<NotConstructible, 1> >();
+#if TEST_STD_VER >= 11
+    test<int, min_allocator<int> >();
+    test<NotConstructible, min_allocator<NotConstructible> >();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..5bb3dc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/default_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque()
+//        noexcept(is_nothrow_default_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::deque<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..8dfcebd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// ~deque() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    ~some_alloc() noexcept(false);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::deque<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..3d64140
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/initializer_list.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// deque(initializer_list<value_type> il);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::deque<int> d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::deque<int, min_allocator<int>> d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/initializer_list_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/initializer_list_alloc.pass.cpp
new file mode 100644
index 0000000..ebefe66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/initializer_list_alloc.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// deque(initializer_list<value_type> il, const Allocator& a = allocator_type());
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::deque<int, test_allocator<int>> d({3, 4, 5, 6}, test_allocator<int>(3));
+    assert(d.get_allocator() == test_allocator<int>(3));
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::deque<int, min_allocator<int>> d({3, 4, 5, 6}, min_allocator<int>());
+    assert(d.get_allocator() == min_allocator<int>());
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/iter_iter.pass.cpp
new file mode 100644
index 0000000..1d4c9c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/iter_iter.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// template <class InputIterator> deque(InputIterator f, InputIterator l);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#endif
+
+template <class InputIterator>
+void
+test(InputIterator f, InputIterator l)
+{
+    typedef typename std::iterator_traits<InputIterator>::value_type T;
+    typedef std::allocator<T> Allocator;
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    C d(f, l);
+    assert(d.size() == static_cast<std::size_t>(std::distance(f, l)));
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i, ++f)
+        assert(*i == *f);
+}
+
+template <class Allocator, class InputIterator>
+void
+test(InputIterator f, InputIterator l)
+{
+    typedef typename std::iterator_traits<InputIterator>::value_type T;
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    C d(f, l);
+    assert(d.size() == static_cast<std::size_t>(std::distance(f, l)));
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i, ++f)
+        assert(*i == *f);
+}
+
+void basic_test()
+{
+    int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+    int* an = ab + sizeof(ab)/sizeof(ab[0]);
+    test(cpp17_input_iterator<const int*>(ab), cpp17_input_iterator<const int*>(an));
+    test(forward_iterator<const int*>(ab), forward_iterator<const int*>(an));
+    test(bidirectional_iterator<const int*>(ab), bidirectional_iterator<const int*>(an));
+    test(random_access_iterator<const int*>(ab), random_access_iterator<const int*>(an));
+    test<limited_allocator<int, 4096> >(ab, an);
+#if TEST_STD_VER >= 11
+    test<min_allocator<int> >(ab, an);
+#endif
+}
+
+
+void test_emplacable_concept() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructibleAndMoveable<int>;
+    using It = random_access_iterator<int*>;
+    {
+      std::deque<T> v(It(arr1), It(std::end(arr1)));
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v(It(arr2), It(std::end(arr2)));
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructibleAndMoveable<int>;
+    using It = cpp17_input_iterator<int*>;
+    {
+      std::deque<T> v(It(arr1), It(std::end(arr1)));
+      assert(v[0].copied == 0);
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v(It(arr2), It(std::end(arr2)));
+      //assert(v[0].copied == 0);
+      assert(v[0].value == 1);
+      //assert(v[1].copied == 0);
+      assert(v[1].value == 101);
+      assert(v[2].copied == 0);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+}
+
+int main(int, char**) {
+  basic_test();
+  test_emplacable_concept();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..a043f51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/iter_iter_alloc.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// template <class InputIterator>
+//   deque(InputIterator f, InputIterator l, const allocator_type& a);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#endif
+
+template <class InputIterator, class Allocator>
+void
+test(InputIterator f, InputIterator l, const Allocator& a)
+{
+    typedef typename std::iterator_traits<InputIterator>::value_type T;
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    C d(f, l, a);
+    assert(d.get_allocator() == a);
+    assert(d.size() == static_cast<std::size_t>(std::distance(f, l)));
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i, ++f)
+        assert(*i == *f);
+}
+
+void basic_test()
+{
+    int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+    int* an = ab + sizeof(ab)/sizeof(ab[0]);
+    test(cpp17_input_iterator<const int*>(ab), cpp17_input_iterator<const int*>(an), test_allocator<int>(3));
+    test(forward_iterator<const int*>(ab), forward_iterator<const int*>(an), test_allocator<int>(4));
+    test(bidirectional_iterator<const int*>(ab), bidirectional_iterator<const int*>(an), test_allocator<int>(5));
+    test(random_access_iterator<const int*>(ab), random_access_iterator<const int*>(an), test_allocator<int>(6));
+#if TEST_STD_VER >= 11
+    test(cpp17_input_iterator<const int*>(ab), cpp17_input_iterator<const int*>(an), min_allocator<int>());
+    test(forward_iterator<const int*>(ab), forward_iterator<const int*>(an), min_allocator<int>());
+    test(bidirectional_iterator<const int*>(ab), bidirectional_iterator<const int*>(an), min_allocator<int>());
+    test(random_access_iterator<const int*>(ab), random_access_iterator<const int*>(an), min_allocator<int>());
+#endif
+}
+
+
+void test_emplacable_concept() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructibleAndMoveable<int>;
+    using It = random_access_iterator<int*>;
+    std::allocator<T> a;
+    {
+      std::deque<T> v(It(arr1), It(std::end(arr1)), a);
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v(It(arr2), It(std::end(arr2)), a);
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructibleAndMoveable<int>;
+    using It = cpp17_input_iterator<int*>;
+    std::allocator<T> a;
+    {
+      std::deque<T> v(It(arr1), It(std::end(arr1)), a);
+      assert(v[0].copied == 0);
+      assert(v[0].value == 42);
+    }
+    {
+      std::deque<T> v(It(arr2), It(std::end(arr2)), a);
+      //assert(v[0].copied == 0);
+      assert(v[0].value == 1);
+      //assert(v[1].copied == 0);
+      assert(v[1].value == 101);
+      assert(v[2].copied == 0);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+}
+
+int main(int, char**) {
+  basic_test();
+  test_emplacable_concept();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move.pass.cpp
new file mode 100644
index 0000000..84e2786
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// deque(deque&&);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef test_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(1));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(2));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        A old_a = c1.get_allocator();
+        std::deque<MoveOnly, A> c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() == 0);
+        assert(c3.get_allocator() == old_a);
+        assert(c1.get_allocator() == A(test_alloc_base::moved_value));
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef other_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(1));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(2));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() == 0);
+        assert(c3.get_allocator() == c1.get_allocator());
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef min_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A{});
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A{});
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() == 0);
+        assert(c3.get_allocator() == c1.get_allocator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..734508a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_alloc.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// deque(deque&& c, const allocator_type& a);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        const int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef test_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(1));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(1));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(std::move(c1), A(3)); // unequal allocator
+        assert(c2 == c3);
+        assert(c3.get_allocator() == A(3));
+        LIBCPP_ASSERT(c1.size() != 0);
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        const int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef test_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(1));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(1));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(std::move(c1), A(1)); // equal allocator
+        assert(c2 == c3);
+        assert(c3.get_allocator() == A(1));
+        LIBCPP_ASSERT(c1.size() == 0);
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        const int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef other_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(1));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(1));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(std::move(c1), A(3)); // unequal allocator
+        assert(c2 == c3);
+        assert(c3.get_allocator() == A(3));
+        LIBCPP_ASSERT(c1.size() != 0);
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        const int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef min_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A{});
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A{});
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(std::move(c1), A());  // equal allocator
+        assert(c2 == c3);
+        assert(c3.get_allocator() == A());
+        LIBCPP_ASSERT(c1.size() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign.addressof.compile.pass.cpp
new file mode 100644
index 0000000..7b23268
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque& operator=(deque&& c);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <deque>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::deque<operator_hijacker> dqo;
+  std::deque<operator_hijacker> dq;
+  dq = dqo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..9ae923c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// deque& operator=(deque&& c);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef test_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(5));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(5));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(A(5));
+        c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() == 0);
+        assert(c3.get_allocator() == A(5));
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef test_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(5));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(5));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(A(6));
+        c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() != 0);
+        assert(c3.get_allocator() == A(6));
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef other_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A(5));
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A(5));
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(A(6));
+        c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() == 0);
+        assert(c3.get_allocator() == A(5));
+    }
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        typedef min_allocator<MoveOnly> A;
+        std::deque<MoveOnly, A> c1(A{});
+        for (int* p = ab; p < an; ++p)
+            c1.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c2(A{});
+        for (int* p = ab; p < an; ++p)
+            c2.push_back(MoveOnly(*p));
+        std::deque<MoveOnly, A> c3(A{});
+        c3 = std::move(c1);
+        assert(c2 == c3);
+        assert(c1.size() == 0);
+        assert(c3.get_allocator() == A());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..a87c8e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque& operator=(deque&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::deque<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..d90dd81
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/move_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque(deque&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::deque<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/op_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/op_equal.pass.cpp
new file mode 100644
index 0000000..985d4bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/op_equal.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque& operator=(const deque& c);
+
+#include <deque>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+void
+test(const C& x)
+{
+    C c;
+    c = x;
+    assert(c == x);
+}
+
+int main(int, char**)
+{
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int>(ab, an));
+    }
+    {
+        std::deque<int, test_allocator<int> > l(3, 2, test_allocator<int>(5));
+        std::deque<int, test_allocator<int> > l2(l, test_allocator<int>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<int>(3));
+    }
+    {
+        std::deque<int, other_allocator<int> > l(3, 2, other_allocator<int>(5));
+        std::deque<int, other_allocator<int> > l2(l, other_allocator<int>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+        int ab[] = {3, 4, 2, 8, 0, 1, 44, 34, 45, 96, 80, 1, 13, 31, 45};
+        int* an = ab + sizeof(ab)/sizeof(ab[0]);
+        test(std::deque<int, min_allocator<int>>(ab, an));
+    }
+    {
+        std::deque<int, min_allocator<int> > l(3, 2, min_allocator<int>());
+        std::deque<int, min_allocator<int> > l2(l, min_allocator<int>());
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<int>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/op_equal_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/op_equal_initializer_list.pass.cpp
new file mode 100644
index 0000000..433b68c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/op_equal_initializer_list.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// deque& operator=(initializer_list<value_type> il);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::deque<int> d;
+    d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::deque<int, min_allocator<int>> d;
+    d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size.pass.cpp
new file mode 100644
index 0000000..87b2f3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// explicit deque(size_type n);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test2(unsigned n)
+{
+#if TEST_STD_VER > 11
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    assert(DefaultOnly::count == 0);
+    {
+    C d(n, Allocator());
+    assert(static_cast<unsigned>(DefaultOnly::count) == n);
+    assert(d.size() == n);
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i)
+        assert(*i == T());
+    }
+    assert(DefaultOnly::count == 0);
+#else
+    ((void)n);
+#endif
+}
+
+template <class T, class Allocator>
+void
+test1(unsigned n)
+{
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    assert(DefaultOnly::count == 0);
+    {
+    C d(n);
+    assert(static_cast<unsigned>(DefaultOnly::count) == n);
+    assert(d.size() == n);
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+#if TEST_STD_VER >= 11
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i)
+        assert(*i == T());
+#endif
+    }
+    assert(DefaultOnly::count == 0);
+}
+
+template <class T, class Allocator>
+void
+test3(unsigned n, Allocator const &alloc = Allocator())
+{
+#if TEST_STD_VER > 11
+    typedef std::deque<T, Allocator> C;
+    {
+    C d(n, alloc);
+    assert(d.size() == n);
+    assert(d.get_allocator() == alloc);
+    }
+#else
+    ((void)n);
+    ((void)alloc);
+#endif
+}
+
+template <class T, class Allocator>
+void
+test(unsigned n)
+{
+    test1<T, Allocator> ( n );
+    test2<T, Allocator> ( n );
+}
+
+int main(int, char**)
+{
+    test<DefaultOnly, std::allocator<DefaultOnly> >(0);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(1);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(10);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(1023);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(1024);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(1025);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(2047);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(2048);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(2049);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(4095);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(4096);
+    test<DefaultOnly, std::allocator<DefaultOnly> >(4097);
+
+    LIBCPP_ONLY(test1<DefaultOnly, limited_allocator<DefaultOnly, 4096> >(4095));
+
+#if TEST_STD_VER >= 11
+    test<DefaultOnly, min_allocator<DefaultOnly> >(4095);
+#endif
+
+#if TEST_STD_VER > 11
+    test3<DefaultOnly, std::allocator<DefaultOnly>> (1023);
+    test3<int, std::allocator<int>>(1);
+    test3<int, min_allocator<int>> (3);
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size_value.pass.cpp
new file mode 100644
index 0000000..8216ed4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size_value.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque(size_type n, const value_type& v);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test(unsigned n, const T& x)
+{
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    C d(n, x);
+    assert(d.size() == n);
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i)
+        assert(*i == x);
+}
+
+int main(int, char**)
+{
+    test<int, std::allocator<int> >(0, 5);
+    test<int, std::allocator<int> >(1, 10);
+    test<int, std::allocator<int> >(10, 11);
+    test<int, std::allocator<int> >(1023, -11);
+    test<int, std::allocator<int> >(1024, 25);
+    test<int, std::allocator<int> >(1025, 0);
+    test<int, std::allocator<int> >(2047, 110);
+    test<int, std::allocator<int> >(2048, -500);
+    test<int, std::allocator<int> >(2049, 654);
+    test<int, std::allocator<int> >(4095, 78);
+    test<int, std::allocator<int> >(4096, 1165);
+    test<int, std::allocator<int> >(4097, 157);
+    LIBCPP_ONLY(test<int, limited_allocator<int, 4096> >(4095, 90));
+#if TEST_STD_VER >= 11
+    test<int, min_allocator<int> >(4095, 90);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size_value_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size_value_alloc.pass.cpp
new file mode 100644
index 0000000..d16fa66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.cons/size_value_alloc.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// deque(size_type n, const value_type& v, const allocator_type& a);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test(unsigned n, const T& x, const Allocator& a)
+{
+    typedef std::deque<T, Allocator> C;
+    typedef typename C::const_iterator const_iterator;
+    C d(n, x, a);
+    assert(d.get_allocator() == a);
+    assert(d.size() == n);
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == d.size());
+    for (const_iterator i = d.begin(), e = d.end(); i != e; ++i)
+        assert(*i == x);
+}
+
+int main(int, char**)
+{
+    {
+    std::allocator<int> a;
+    test(0, 5, a);
+    test(1, 10, a);
+    test(10, 11, a);
+    test(1023, -11, a);
+    test(1024, 25, a);
+    test(1025, 0, a);
+    test(2047, 110, a);
+    test(2048, -500, a);
+    test(2049, 654, a);
+    test(4095, 78, a);
+    test(4096, 1165, a);
+    test(4097, 157, a);
+    }
+#if TEST_STD_VER >= 11
+    {
+    min_allocator<int> a;
+    test(0, 5, a);
+    test(1, 10, a);
+    test(10, 11, a);
+    test(1023, -11, a);
+    test(1024, 25, a);
+    test(1025, 0, a);
+    test(2047, 110, a);
+    test(2048, -500, a);
+    test(2049, 654, a);
+    test(4095, 78, a);
+    test(4096, 1165, a);
+    test(4097, 157, a);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.erasure/erase.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.erasure/erase.pass.cpp
new file mode 100644
index 0000000..4c5a14e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.erasure/erase.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <deque>
+
+// template <class T, class Allocator, class U>
+//   typename deque<T, Allocator>::size_type
+//   erase(deque<T, Allocator>& c, const U& value);
+
+#include <deque>
+#include <optional>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class U>
+void test0(S s, U val, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase(s, val)));
+  assert(expected_erased_count == std::erase(s, val));
+  assert(s == expected);
+}
+
+template <class S>
+void test()
+{
+  test0(S(), 1, S(), 0);
+
+  test0(S({1}), 1, S(), 1);
+  test0(S({1}), 2, S({1}), 0);
+
+  test0(S({1, 2}), 1, S({2}), 1);
+  test0(S({1, 2}), 2, S({1}), 1);
+  test0(S({1, 2}), 3, S({1, 2}), 0);
+  test0(S({1, 1}), 1, S(), 2);
+  test0(S({1, 1}), 3, S({1, 1}), 0);
+
+  test0(S({1, 2, 3}), 1, S({2, 3}), 1);
+  test0(S({1, 2, 3}), 2, S({1, 3}), 1);
+  test0(S({1, 2, 3}), 3, S({1, 2}), 1);
+  test0(S({1, 2, 3}), 4, S({1, 2, 3}), 0);
+
+  test0(S({1, 1, 1}), 1, S(), 3);
+  test0(S({1, 1, 1}), 2, S({1, 1, 1}), 0);
+  test0(S({1, 1, 2}), 1, S({2}), 2);
+  test0(S({1, 1, 2}), 2, S({1, 1}), 1);
+  test0(S({1, 1, 2}), 3, S({1, 1, 2}), 0);
+  test0(S({1, 2, 2}), 1, S({2, 2}), 1);
+  test0(S({1, 2, 2}), 2, S({1}), 2);
+  test0(S({1, 2, 2}), 3, S({1, 2, 2}), 0);
+
+  //  Test cross-type erasure
+  using opt = std::optional<typename S::value_type>;
+  test0(S({1, 2, 1}), opt(), S({1, 2, 1}), 0);
+  test0(S({1, 2, 1}), opt(1), S({2}), 2);
+  test0(S({1, 2, 1}), opt(2), S({1, 1}), 1);
+  test0(S({1, 2, 1}), opt(3), S({1, 2, 1}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::deque<int>>();
+    test<std::deque<int, min_allocator<int>>> ();
+    test<std::deque<int, test_allocator<int>>> ();
+
+    test<std::deque<long>>();
+    test<std::deque<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..7f6e4c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.erasure/erase_if.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <deque>
+
+// template <class T, class Allocator, class Predicate>
+//   typename deque<T, Allocator>::size_type
+//   erase_if(deque<T, Allocator>& c, Predicate pred);
+
+#include <deque>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == expected);
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(), is1, S(), 0);
+
+    test0(S({1}), is1, S(), 1);
+    test0(S({1}), is2, S({1}), 0);
+
+    test0(S({1, 2}), is1, S({2}), 1);
+    test0(S({1, 2}), is2, S({1}), 1);
+    test0(S({1, 2}), is3, S({1, 2}), 0);
+    test0(S({1, 1}), is1, S(), 2);
+    test0(S({1, 1}), is3, S({1, 1}), 0);
+
+    test0(S({1, 2, 3}), is1, S({2, 3}), 1);
+    test0(S({1, 2, 3}), is2, S({1, 3}), 1);
+    test0(S({1, 2, 3}), is3, S({1, 2}), 1);
+    test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
+
+    test0(S({1, 1, 1}), is1, S(), 3);
+    test0(S({1, 1, 1}), is2, S({1, 1, 1}), 0);
+    test0(S({1, 1, 2}), is1, S({2}), 2);
+    test0(S({1, 1, 2}), is2, S({1, 1}), 1);
+    test0(S({1, 1, 2}), is3, S({1, 1, 2}), 0);
+    test0(S({1, 2, 2}), is1, S({2, 2}), 1);
+    test0(S({1, 2, 2}), is2, S({1}), 2);
+    test0(S({1, 2, 2}), is3, S({1, 2, 2}), 0);
+
+    test0(S({1, 2, 3}), True, S(), 3);
+    test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::deque<int>>();
+    test<std::deque<int, min_allocator<int>>> ();
+    test<std::deque<int, test_allocator<int>>> ();
+
+    test<std::deque<long>>();
+    test<std::deque<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..b943aee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/clear.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void clear() noexcept;
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef NotConstructible T;
+        typedef std::deque<T> C;
+        C c;
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::deque<T> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef NotConstructible T;
+        typedef std::deque<T, min_allocator<T>> C;
+        C c;
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::deque<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..f550f4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// template <class... Args> iterator emplace(const_iterator p, Args&&... args);
+
+// UNSUPPORTED: c++03
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(Emplaceable());
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, C& c1)
+{
+    typedef typename C::const_iterator CI;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.emplace(c1.begin() + P, Emplaceable(1, 2.5));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    assert(*i == Emplaceable(1, 2.5));
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    for (int i = 0; i <= 3; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1);
+        }
+    }
+    for (int i = N/2-1; i <= N/2+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1);
+        }
+    }
+    for (int i = N - 3; i <= N; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1);
+        }
+    }
+}
+
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<Emplaceable> >(rng[i], rng[j]);
+    }
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<Emplaceable, min_allocator<Emplaceable>> >(rng[i], rng[j]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace_back.pass.cpp
new file mode 100644
index 0000000..4cc56ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace_back.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// template <class... Args> reference emplace_back(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <deque>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(Emplaceable());
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1)
+{
+    typedef typename C::iterator I;
+    std::size_t c1_osize = c1.size();
+#if TEST_STD_VER > 14
+    typedef typename C::reference Ref;
+    Ref ref = c1.emplace_back(Emplaceable(1, 2.5));
+#else
+              c1.emplace_back(Emplaceable(1, 2.5));
+#endif
+    assert(c1.size() == c1_osize + 1);
+    assert(std::distance(c1.begin(), c1.end())
+               == static_cast<std::ptrdiff_t>(c1.size()));
+    I i = c1.end();
+    assert(*--i == Emplaceable(1, 2.5));
+#if TEST_STD_VER > 14
+    assert(&(*i) == &ref);
+#endif
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    C c1 = make<C>(N, start);
+    test(c1);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<Emplaceable> >(rng[i], rng[j]);
+    }
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<Emplaceable, min_allocator<Emplaceable>> >(rng[i], rng[j]);
+    }
+    {
+        std::deque<Tag_X, TaggingAllocator<Tag_X>> c;
+        c.emplace_back();
+        assert(c.size() == 1);
+        c.emplace_back(1, 2, 3);
+        assert(c.size() == 2);
+        c.emplace_front();
+        assert(c.size() == 3);
+        c.emplace_front(1, 2, 3);
+        assert(c.size() == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace_front.pass.cpp
new file mode 100644
index 0000000..a63e3cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/emplace_front.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// template <class... Args> reference emplace_front(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <deque>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(Emplaceable());
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1)
+{
+    typedef typename C::iterator I;
+    std::size_t c1_osize = c1.size();
+#if TEST_STD_VER > 14
+    typedef typename C::reference Ref;
+    Ref res_ref = c1.emplace_front(Emplaceable(1, 2.5));
+#else
+                  c1.emplace_front(Emplaceable(1, 2.5));
+#endif
+    assert(c1.size() == c1_osize + 1);
+    assert(std::distance(c1.begin(), c1.end())
+               == static_cast<std::ptrdiff_t>(c1.size()));
+    I i = c1.begin();
+    assert(*i == Emplaceable(1, 2.5));
+#if TEST_STD_VER > 14
+    assert(&res_ref == &(*i));
+#endif
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    C c1 = make<C>(N, start);
+    test(c1);
+}
+
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<Emplaceable> >(rng[i], rng[j]);
+    }
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<Emplaceable, min_allocator<Emplaceable>> >(rng[i], rng[j]);
+    }
+    {
+        std::deque<Tag_X, TaggingAllocator<Tag_X>> c;
+        c.emplace_front();
+        assert(c.size() == 1);
+        c.emplace_front(1, 2, 3);
+        assert(c.size() == 2);
+        c.emplace_front();
+        assert(c.size() == 3);
+        c.emplace_front(1, 2, 3);
+        assert(c.size() == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter.invalidation.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter.invalidation.pass.cpp
new file mode 100644
index 0000000..de80e5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter.invalidation.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// iterator erase(const_iterator f)
+
+//  Erasing items from the beginning or the end of a deque shall not invalidate iterators
+//  to items that were not erased.
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename C>
+void del_at_start(C c)
+{
+    typename C::iterator first = c.begin();
+    typename C::iterator it1 = first + 1;
+    typename C::iterator it2 = c.end() - 1;
+
+    c.erase (first);
+
+    typename C::iterator it3 = c.begin();
+    typename C::iterator it4 = c.end() - 1;
+    assert(  it1 ==   it3);
+    assert( *it1 ==  *it3);
+    assert(&*it1 == &*it3);
+    assert(  it2 ==   it4);
+    assert( *it2 ==  *it4);
+    assert(&*it2 == &*it4);
+}
+
+template <typename C>
+void del_at_end(C c)
+{
+    typename C::iterator first = c.end() - 1;
+    typename C::iterator it1 = c.begin();
+    typename C::iterator it2 = first - 1;
+
+    c.erase (first);
+
+    typename C::iterator it3 = c.begin();
+    typename C::iterator it4 = c.end() - 1;
+    assert(  it1 ==   it3);
+    assert( *it1 ==  *it3);
+    assert(&*it1 == &*it3);
+    assert(  it2 ==   it4);
+    assert( *it2 ==  *it4);
+    assert(&*it2 == &*it4);
+}
+
+int main(int, char**)
+{
+    std::deque<int> queue;
+    for (int i = 0; i < 20; ++i)
+        queue.push_back(i);
+
+    while (queue.size() > 1)
+    {
+        del_at_start(queue);
+        del_at_end(queue);
+        queue.pop_back();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter.pass.cpp
new file mode 100644
index 0000000..3aaa3e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// iterator erase(const_iterator p)
+
+#include <deque>
+#include <algorithm>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Throws {
+    Throws() : v_(0) {}
+    Throws(int v) : v_(v) {}
+    Throws(const Throws  &rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws(      Throws &&rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws& operator=(const Throws  &rhs) { v_ = rhs.v_; return *this; }
+    Throws& operator=(      Throws &&rhs) { v_ = rhs.v_; return *this; }
+    int v_;
+
+    static bool sThrows;
+    };
+
+bool Throws::sThrows = false;
+#endif
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, C& c1)
+{
+    typedef typename C::iterator I;
+    assert(static_cast<std::size_t>(P) < c1.size());
+    std::size_t c1_osize = c1.size();
+    I i = c1.erase(c1.cbegin() + P);
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize - 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    int j = 0;
+    for (; j < P; ++j, ++i)
+        assert(*i == j);
+    for (++j; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    int pstep = std::max(N / std::max(std::min(N, 10), 1), 1);
+    for (int p = 0; p < N; p += pstep)
+    {
+        C c1 = make<C>(N, start);
+        test(p, c1);
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+// Test for LWG2953:
+// Throws: Nothing unless an exception is thrown by the assignment operator of T.
+// (which includes move assignment)
+    {
+    Throws arr[] = {1, 2, 3};
+    std::deque<Throws> v(arr, arr+3);
+    Throws::sThrows = true;
+    v.erase(v.begin());
+    v.erase(--v.end());
+    v.erase(v.begin());
+    assert(v.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter_iter.invalidation.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter_iter.invalidation.pass.cpp
new file mode 100644
index 0000000..4c82b51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter_iter.invalidation.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// iterator erase(const_iterator f, const_iterator l)
+
+//  Erasing items from the beginning or the end of a deque shall not invalidate iterators
+//  to items that were not erased.
+
+
+#include <deque>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename C>
+void del_at_start(C c, size_t num)
+{
+    typename C::iterator first = c.begin();
+    typename C::iterator last  = first + num;
+    typename C::iterator it1 = last;
+    typename C::iterator it2 = c.end() - 1;
+
+    c.erase (first, last);
+
+    typename C::iterator it3 = c.begin();
+    typename C::iterator it4 = c.end() - 1;
+    assert(  it1 ==   it3);
+    assert( *it1 ==  *it3);
+    assert(&*it1 == &*it3);
+    assert(  it2 ==   it4);
+    assert( *it2 ==  *it4);
+    assert(&*it2 == &*it4);
+}
+
+template <typename C>
+void del_at_end(C c, size_t num)
+{
+    typename C::iterator last  = c.end();
+    typename C::iterator first = last - num;
+    typename C::iterator it1 = c.begin();
+    typename C::iterator it2 = first - 1;
+
+    c.erase (first, last);
+
+    typename C::iterator it3 = c.begin();
+    typename C::iterator it4 = c.end() - 1;
+    assert(  it1 ==   it3);
+    assert( *it1 ==  *it3);
+    assert(&*it1 == &*it3);
+    assert(  it2 ==   it4);
+    assert( *it2 ==  *it4);
+    assert(&*it2 == &*it4);
+}
+
+
+int main(int, char**)
+{
+    std::deque<int> queue;
+    for (int i = 0; i < 20; ++i)
+        queue.push_back(i);
+
+    while (queue.size() > 1)
+    {
+        for (size_t i = 1; i < queue.size(); ++i)
+        {
+            del_at_start(queue, i);
+            del_at_end  (queue, i);
+        }
+        queue.pop_back();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..70cf119
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/erase_iter_iter.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <deque>
+
+// iterator erase(const_iterator f, const_iterator l)
+
+#include <deque>
+#include <algorithm>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Throws {
+    Throws() : v_(0) {}
+    Throws(int v) : v_(v) {}
+    Throws(const Throws  &rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws(      Throws &&rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws& operator=(const Throws  &rhs) { v_ = rhs.v_; return *this; }
+    Throws& operator=(      Throws &&rhs) { v_ = rhs.v_; return *this; }
+    int v_;
+
+    static bool sThrows;
+    };
+
+bool Throws::sThrows = false;
+#endif
+
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, C& c1, int size)
+{
+    typedef typename C::iterator I;
+    assert(static_cast<std::size_t>(P + size) <= c1.size());
+    std::size_t c1_osize = c1.size();
+    I i = c1.erase(c1.cbegin() + P, c1.cbegin() + (P + size));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize - size);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    int j = 0;
+    for (; j < P; ++j, ++i)
+        assert(*i == j);
+    for (j += size; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    int pstep = std::max(N / std::max(std::min(N, 10), 1), 1);
+    for (int p = 0; p <= N; p += pstep)
+    {
+        int sstep = std::max((N - p) / std::max(std::min(N - p, 10), 1), 1);
+        for (int s = 0; s <= N - p; s += sstep)
+        {
+            C c1 = make<C>(N, start);
+            test(p, c1, s);
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+// Test for LWG2953:
+// Throws: Nothing unless an exception is thrown by the assignment operator of T.
+// (which includes move assignment)
+    {
+    Throws arr[] = {1, 2, 3};
+    std::deque<Throws> v(arr, arr+3);
+    Throws::sThrows = true;
+    v.erase(v.begin(), --v.end());
+    assert(v.size() == 1);
+    v.erase(v.begin(), v.end());
+    assert(v.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_iter_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_iter_initializer_list.pass.cpp
new file mode 100644
index 0000000..42bcaab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_iter_initializer_list.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// iterator insert(const_iterator p, initializer_list<value_type> il);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::deque<int> d(10, 1);
+    std::deque<int>::iterator i = d.insert(d.cbegin() + 2, {3, 4, 5, 6});
+    assert(d.size() == 14);
+    assert(i == d.begin() + 2);
+    assert(d[0] == 1);
+    assert(d[1] == 1);
+    assert(d[2] == 3);
+    assert(d[3] == 4);
+    assert(d[4] == 5);
+    assert(d[5] == 6);
+    assert(d[6] == 1);
+    assert(d[7] == 1);
+    assert(d[8] == 1);
+    assert(d[9] == 1);
+    assert(d[10] == 1);
+    assert(d[11] == 1);
+    assert(d[12] == 1);
+    assert(d[13] == 1);
+    }
+    {
+    std::deque<int, min_allocator<int>> d(10, 1);
+    std::deque<int, min_allocator<int>>::iterator i = d.insert(d.cbegin() + 2, {3, 4, 5, 6});
+    assert(d.size() == 14);
+    assert(i == d.begin() + 2);
+    assert(d[0] == 1);
+    assert(d[1] == 1);
+    assert(d[2] == 3);
+    assert(d[3] == 4);
+    assert(d[4] == 5);
+    assert(d[5] == 6);
+    assert(d[6] == 1);
+    assert(d[7] == 1);
+    assert(d[8] == 1);
+    assert(d[9] == 1);
+    assert(d[10] == 1);
+    assert(d[11] == 1);
+    assert(d[12] == 1);
+    assert(d[13] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_iter_iter.pass.cpp
new file mode 100644
index 0000000..aff4703
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_iter_iter.pass.cpp
@@ -0,0 +1,290 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <deque>
+
+// template <class InputIterator>
+//   iterator insert (const_iterator p, InputIterator f, InputIterator l);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, const C& c0, const C& c2)
+{
+    {
+    typedef typename C::const_iterator CI;
+    typedef cpp17_input_iterator<CI> BCI;
+    C c1 = c0;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, BCI(c2.begin()), BCI(c2.end()));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + c2.size());
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, ++i)
+        assert(*i == j);
+    for (int j = 0; static_cast<std::size_t>(j) < c2.size(); ++j, ++i)
+        assert(*i == j);
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+    }
+    {
+    typedef typename C::const_iterator CI;
+    typedef forward_iterator<CI> BCI;
+    C c1 = c0;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, BCI(c2.begin()), BCI(c2.end()));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + c2.size());
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, ++i)
+        assert(*i == j);
+    for (int j = 0; static_cast<std::size_t>(j) < c2.size(); ++j, ++i)
+        assert(*i == j);
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+    }
+    {
+    typedef typename C::const_iterator CI;
+    typedef bidirectional_iterator<CI> BCI;
+    C c1 = c0;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, BCI(c2.begin()), BCI(c2.end()));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + c2.size());
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, ++i)
+        assert(*i == j);
+    for (int j = 0; static_cast<std::size_t>(j) < c2.size(); ++j, ++i)
+        assert(*i == j);
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+    }
+}
+
+template <class C>
+void
+testN(int start, int N, int M)
+{
+    for (int i = 0; i <= 3; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            test(i, c1, c2);
+        }
+    }
+    for (int i = M-1; i <= M+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            test(i, c1, c2);
+        }
+    }
+    for (int i = N/2-1; i <= N/2+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            test(i, c1, c2);
+        }
+    }
+    for (int i = N - M - 1; i <= N - M + 1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            test(i, c1, c2);
+        }
+    }
+    for (int i = N - M - 1; i <= N - M + 1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            test(i, c1, c2);
+        }
+    }
+    for (int i = N - 3; i <= N; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            test(i, c1, c2);
+        }
+    }
+}
+
+template <class C>
+void
+testI(int P, C& c1, const C& c2)
+{
+    typedef typename C::const_iterator CI;
+    typedef cpp17_input_iterator<CI> ICI;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, ICI(c2.begin()), ICI(c2.end()));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + c2.size());
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, ++i)
+        assert(*i == j);
+    for (int j = 0; static_cast<std::size_t>(j) < c2.size(); ++j, ++i)
+        assert(*i == j);
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testNI(int start, int N, int M)
+{
+    for (int i = 0; i <= 3; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            testI(i, c1, c2);
+        }
+    }
+    for (int i = M-1; i <= M+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            testI(i, c1, c2);
+        }
+    }
+    for (int i = N/2-1; i <= N/2+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            testI(i, c1, c2);
+        }
+    }
+    for (int i = N - M - 1; i <= N - M + 1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            testI(i, c1, c2);
+        }
+    }
+    for (int i = N - 3; i <= N; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            C c2 = make<C>(M);
+            testI(i, c1, c2);
+        }
+    }
+}
+
+template <class C>
+void
+test_move()
+{
+#if TEST_STD_VER >= 11
+    C c;
+    typedef typename C::const_iterator CI;
+    {
+        MoveOnly mo(0);
+        typedef MoveOnly* I;
+        c.insert(c.end(), std::move_iterator<I>(&mo), std::move_iterator<I>(&mo+1));
+    }
+    int j = 0;
+    for (CI i = c.begin(); i != c.end(); ++i, (void) ++j)
+        assert(*i == MoveOnly(j));
+    {
+        MoveOnly mo(1);
+        typedef cpp17_input_iterator<MoveOnly*> I;
+        c.insert(c.end(), std::move_iterator<I>(I(&mo)), std::move_iterator<I>(I(&mo+1)));
+    }
+    j = 0;
+    for (CI i = c.begin(); i != c.end(); ++i, (void) ++j)
+        assert(*i == MoveOnly(j));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    testNI<std::deque<int> >(1500, 2000, 1000);
+#if TEST_STD_VER >= 11
+    test_move<std::deque<MoveOnly, limited_allocator<MoveOnly, 2000> > >();
+#endif
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
+    testNI<std::deque<int> >(1500, 2000, 1000);
+    test_move<std::deque<MoveOnly, min_allocator<MoveOnly> > >();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_rvalue.pass.cpp
new file mode 100644
index 0000000..22ebf5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_rvalue.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// iterator insert (const_iterator p, value_type&& v);
+
+// UNSUPPORTED: c++03
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(MoveOnly(i));
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, C& c1, int x)
+{
+    typedef typename C::const_iterator CI;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, MoveOnly(x));
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, (void) ++i)
+        assert(*i == MoveOnly(j));
+    assert(*i == MoveOnly(x));
+    ++i;
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, (void) ++i)
+        assert(*i == MoveOnly(j));
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    for (int i = 0; i <= 3; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, -10);
+        }
+    }
+    for (int i = N/2-1; i <= N/2+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, -10);
+        }
+    }
+    for (int i = N - 3; i <= N; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, -10);
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<MoveOnly> >(rng[i], rng[j]);
+    }
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<MoveOnly, min_allocator<MoveOnly>> >(rng[i], rng[j]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_size_value.pass.cpp
new file mode 100644
index 0000000..1a51154
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_size_value.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <deque>
+
+// iterator insert (const_iterator p, size_type n, const value_type& v);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, C& c1, int size, int x)
+{
+    typedef typename C::const_iterator CI;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, size, x);
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + size);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, ++i)
+        assert(*i == j);
+    for (int j = 0; j < size; ++j, ++i)
+        assert(*i == x);
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N, int M)
+{
+    for (int i = 0; i <= 3; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, M, -10);
+        }
+    }
+    for (int i = M-1; i <= M+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, M, -10);
+        }
+    }
+    for (int i = N/2-1; i <= N/2+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, M, -10);
+        }
+    }
+    for (int i = N - M - 1; i <= N - M + 1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, M, -10);
+        }
+    }
+    for (int i = N - 3; i <= N; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, M, -10);
+        }
+    }
+}
+
+template <class C>
+void
+self_reference_test()
+{
+    typedef typename C::const_iterator CI;
+    for (int i = 0; i < 20; ++i)
+    {
+        for (int j = 0; j < 20; ++j)
+        {
+            C c = make<C>(20);
+            CI it = c.cbegin() + i;
+            CI jt = c.cbegin() + j;
+            c.insert(it, 5, *jt);
+            assert(c.size() == 25);
+            assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+            it = c.cbegin();
+            for (int k = 0; k < i; ++k, ++it)
+                assert(*it == k);
+            for (int k = 0; k < 5; ++k, ++it)
+                assert(*it == j);
+            for (int k = i; k < 20; ++k, ++it)
+                assert(*it == k);
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    self_reference_test<std::deque<int> >();
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            for (int k = 0; k < N; ++k)
+                testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
+    self_reference_test<std::deque<int, min_allocator<int>> >();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_value.pass.cpp
new file mode 100644
index 0000000..e4a7209
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/insert_value.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// iterator insert (const_iterator p, const value_type& v);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(int P, C& c1, int x)
+{
+    typedef typename C::const_iterator CI;
+    std::size_t c1_osize = c1.size();
+    CI i = c1.insert(c1.begin() + P, x);
+    assert(i == c1.begin() + P);
+    assert(c1.size() == c1_osize + 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    i = c1.begin();
+    for (int j = 0; j < P; ++j, ++i)
+        assert(*i == j);
+    assert(*i == x);
+    ++i;
+    for (int j = P; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    for (int i = 0; i <= 3; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, -10);
+        }
+    }
+    for (int i = N/2-1; i <= N/2+1; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, -10);
+        }
+    }
+    for (int i = N - 3; i <= N; ++i)
+    {
+        if (0 <= i && i <= N)
+        {
+            C c1 = make<C>(N, start);
+            test(i, c1, -10);
+        }
+    }
+}
+
+template <class C>
+void
+self_reference_test()
+{
+    typedef typename C::const_iterator CI;
+    for (int i = 0; i < 20; ++i)
+    {
+        for (int j = 0; j < 20; ++j)
+        {
+            C c = make<C>(20);
+            CI it = c.cbegin() + i;
+            CI jt = c.cbegin() + j;
+            c.insert(it, *jt);
+            assert(c.size() == 21);
+            assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+            it = c.cbegin();
+            for (int k = 0; k < i; ++k, ++it)
+                assert(*it == k);
+            assert(*it == j);
+            ++it;
+            for (int k = i; k < 20; ++k, ++it)
+                assert(*it == k);
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    self_reference_test<std::deque<int> >();
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    self_reference_test<std::deque<int, min_allocator<int>> >();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.invalidation.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.invalidation.pass.cpp
new file mode 100644
index 0000000..9e3bfdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.invalidation.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void pop_back()
+
+//  Erasing items from the beginning or the end of a deque shall not invalidate iterators
+//  to items that were not erased.
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename C>
+void test(C c)
+{
+    typename C::iterator it1 = c.begin();
+    typename C::iterator it2 = c.end() - 2;
+
+    c.pop_back();
+
+    typename C::iterator it3 = c.begin();
+    typename C::iterator it4 = c.end() - 1;
+    assert(  it1 ==   it3);
+    assert( *it1 ==  *it3);
+    assert(&*it1 == &*it3);
+    assert(  it2 ==   it4);
+    assert( *it2 ==  *it4);
+    assert(&*it2 == &*it4);
+}
+
+int main(int, char**)
+{
+    std::deque<int> queue;
+    for (int i = 0; i < 20; ++i)
+        queue.push_back(i);
+
+    while (queue.size() > 1)
+    {
+        test(queue);
+        queue.pop_back();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.pass.cpp
new file mode 100644
index 0000000..0174b09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void pop_back()
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1)
+{
+    typedef typename C::iterator I;
+    std::size_t c1_osize = c1.size();
+    c1.pop_back();
+    assert(c1.size() == c1_osize - 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    I i = c1.begin();
+    for (int j = 0; static_cast<std::size_t>(j) < c1.size(); ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    if (N != 0)
+    {
+        C c1 = make<C>(N, start);
+        test(c1);
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_front.invalidation.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_front.invalidation.pass.cpp
new file mode 100644
index 0000000..d7d32f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_front.invalidation.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void pop_front()
+
+//  Erasing items from the beginning or the end of a deque shall not invalidate iterators
+//  to items that were not erased.
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename C>
+void test(C c)
+{
+    typename C::iterator it1 = c.begin() + 1;
+    typename C::iterator it2 = c.end() - 1;
+
+    c.pop_front();
+
+    typename C::iterator it3 = c.begin();
+    typename C::iterator it4 = c.end() - 1;
+    assert(  it1 ==   it3);
+    assert( *it1 ==  *it3);
+    assert(&*it1 == &*it3);
+    assert(  it2 ==   it4);
+    assert( *it2 ==  *it4);
+    assert(&*it2 == &*it4);
+}
+
+int main(int, char**)
+{
+    std::deque<int> queue;
+    for (int i = 0; i < 20; ++i)
+        queue.push_back(i);
+
+    while (queue.size() > 1)
+    {
+        test(queue);
+        queue.pop_back();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_front.pass.cpp
new file mode 100644
index 0000000..64e705d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_front.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void pop_front()
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1)
+{
+    typedef typename C::iterator I;
+    std::size_t c1_osize = c1.size();
+    c1.pop_front();
+    assert(c1.size() == c1_osize - 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    I i = c1.begin();
+    for (int j = 1; static_cast<std::size_t>(j) < c1.size(); ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    if (N != 0)
+    {
+        C c1 = make<C>(N, start);
+        test(c1);
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back.pass.cpp
new file mode 100644
index 0000000..b813de8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void push_back(const value_type& v);
+// void pop_back();
+// void pop_front();
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void test(int size)
+{
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int j = 0; j < N; ++j)
+    {
+        C c = make<C>(size, rng[j]);
+        typename C::const_iterator it = c.begin();
+        for (int i = 0; i < size; ++i, ++it)
+            assert(*it == i);
+    }
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049, 4094, 4095, 4096};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int j = 0; j < N; ++j)
+        test<std::deque<int> >(rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049, 4094, 4095, 4096};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int j = 0; j < N; ++j)
+        test<std::deque<int, min_allocator<int>> >(rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back_exception_safety.pass.cpp
new file mode 100644
index 0000000..1371293
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back_exception_safety.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <deque>
+
+// void push_back(const value_type& x);
+
+#include <deque>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include <cassert>
+
+// Flag that makes the copy constructor for CMyClass throw an exception
+static bool gCopyConstructorShouldThow = false;
+
+class CMyClass {
+    public: CMyClass(int tag);
+    public: CMyClass(const CMyClass& iOther);
+    public: ~CMyClass();
+
+    bool equal(const CMyClass &rhs) const
+        { return fTag == rhs.fTag && fMagicValue == rhs.fMagicValue; }
+
+    private:
+        int fMagicValue;
+        int fTag;
+
+    private: static int kStartedConstructionMagicValue;
+    private: static int kFinishedConstructionMagicValue;
+};
+
+// Value for fMagicValue when the constructor has started running, but not yet finished
+int CMyClass::kStartedConstructionMagicValue = 0;
+// Value for fMagicValue when the constructor has finished running
+int CMyClass::kFinishedConstructionMagicValue = 12345;
+
+CMyClass::CMyClass(int tag) :
+    fMagicValue(kStartedConstructionMagicValue), fTag(tag)
+{
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::CMyClass(const CMyClass& iOther) :
+    fMagicValue(kStartedConstructionMagicValue), fTag(iOther.fTag)
+{
+    // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
+    if (gCopyConstructorShouldThow) {
+        throw std::exception();
+    }
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::~CMyClass() {
+    // Only instances for which the constructor has finished running should be destructed
+    assert(fMagicValue == kFinishedConstructionMagicValue);
+}
+
+bool operator==(const CMyClass &lhs, const CMyClass &rhs) { return lhs.equal(rhs); }
+
+int main(int, char**)
+{
+    CMyClass instance(42);
+    {
+    std::deque<CMyClass> vec;
+
+    vec.push_back(instance);
+    std::deque<CMyClass> vec2(vec);
+
+    gCopyConstructorShouldThow = true;
+    try {
+        vec.push_back(instance);
+        assert(false);
+    }
+    catch (...) {
+        gCopyConstructorShouldThow = false;
+        assert(vec==vec2);
+    }
+    }
+
+    {
+    test_allocator_statistics alloc_stats;
+    typedef std::deque<CMyClass, test_allocator<CMyClass> > C;
+    C vec((test_allocator<CMyClass>(&alloc_stats)));
+    C vec2(vec, test_allocator<CMyClass>(&alloc_stats));
+
+    alloc_stats.throw_after = 1;
+    try {
+        vec.push_back(instance);
+        assert(false);
+    }
+    catch (...) {
+        assert(vec==vec2);
+    }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back_rvalue.pass.cpp
new file mode 100644
index 0000000..74ed7af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_back_rvalue.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// void push_back(value_type&& v);
+// void pop_back();
+// void pop_front();
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(MoveOnly(i));
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void test(int size)
+{
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int j = 0; j < N; ++j)
+    {
+        C c = make<C>(size, rng[j]);
+        typename C::const_iterator it = c.begin();
+        for (int i = 0; i < size; ++i, (void) ++it)
+            assert(*it == MoveOnly(i));
+    }
+}
+
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049, 4094, 4095, 4096};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int j = 0; j < N; ++j)
+        test<std::deque<MoveOnly> >(rng[j]);
+    }
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049, 4094, 4095, 4096};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int j = 0; j < N; ++j)
+        test<std::deque<MoveOnly, min_allocator<MoveOnly>> >(rng[j]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front.pass.cpp
new file mode 100644
index 0000000..1d8a208
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// void push_front(const value_type& v);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1, int x)
+{
+    typedef typename C::iterator I;
+    std::size_t c1_osize = c1.size();
+    c1.push_front(x);
+    assert(c1.size() == c1_osize + 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    I i = c1.begin();
+    assert(*i == x);
+    ++i;
+    for (int j = 0; static_cast<std::size_t>(j) < c1_osize; ++j, ++i)
+        assert(*i == j);
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    C c1 = make<C>(N, start);
+    test(c1, -10);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+   {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_exception_safety.pass.cpp
new file mode 100644
index 0000000..79f9a14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_exception_safety.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <deque>
+
+// void push_front(const value_type& x);
+
+#include <deque>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+// Flag that makes the copy constructor for CMyClass throw an exception
+static bool gCopyConstructorShouldThow = false;
+
+
+class CMyClass {
+    public: CMyClass(int tag);
+    public: CMyClass(const CMyClass& iOther);
+    public: ~CMyClass();
+
+    bool equal(const CMyClass &rhs) const
+        { return fTag == rhs.fTag && fMagicValue == rhs.fMagicValue; }
+    private:
+        int fMagicValue;
+        int fTag;
+
+    private: static int kStartedConstructionMagicValue;
+    private: static int kFinishedConstructionMagicValue;
+};
+
+// Value for fMagicValue when the constructor has started running, but not yet finished
+int CMyClass::kStartedConstructionMagicValue = 0;
+// Value for fMagicValue when the constructor has finished running
+int CMyClass::kFinishedConstructionMagicValue = 12345;
+
+CMyClass::CMyClass(int tag) :
+    fMagicValue(kStartedConstructionMagicValue), fTag(tag)
+{
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::CMyClass(const CMyClass& iOther) :
+    fMagicValue(kStartedConstructionMagicValue), fTag(iOther.fTag)
+{
+    // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
+    if (gCopyConstructorShouldThow) {
+        throw std::exception();
+    }
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::~CMyClass() {
+    // Only instances for which the constructor has finished running should be destructed
+    assert(fMagicValue == kFinishedConstructionMagicValue);
+}
+
+bool operator==(const CMyClass &lhs, const CMyClass &rhs) { return lhs.equal(rhs); }
+
+int main(int, char**)
+{
+    CMyClass instance(42);
+    {
+    std::deque<CMyClass> vec;
+
+    vec.push_front(instance);
+    std::deque<CMyClass> vec2(vec);
+
+    gCopyConstructorShouldThow = true;
+    try {
+        vec.push_front(instance);
+        assert(false);
+    }
+    catch (...) {
+        gCopyConstructorShouldThow = false;
+        assert(vec==vec2);
+    }
+    }
+
+    {
+    test_allocator_statistics alloc_stats;
+    typedef std::deque<CMyClass, test_allocator<CMyClass> > C;
+    C vec((test_allocator<CMyClass>(&alloc_stats)));
+    C vec2(vec, test_allocator<CMyClass>(&alloc_stats));
+
+    alloc_stats.throw_after = 1;
+    try {
+        vec.push_front(instance);
+        assert(false);
+    }
+    catch (...) {
+        assert(vec==vec2);
+    }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_rvalue.pass.cpp
new file mode 100644
index 0000000..cbfb06b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.modifiers/push_front_rvalue.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// void push_front(value_type&& v);
+
+#include <deque>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(MoveOnly(i));
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void
+test(C& c1, int x)
+{
+    typedef typename C::iterator I;
+    std::size_t c1_osize = c1.size();
+    c1.push_front(MoveOnly(x));
+    assert(c1.size() == c1_osize + 1);
+    assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+    I i = c1.begin();
+    assert(*i == MoveOnly(x));
+    ++i;
+    for (int j = 0; static_cast<std::size_t>(j) < c1_osize; ++j, (void) ++i)
+        assert(*i == MoveOnly(j));
+}
+
+template <class C>
+void
+testN(int start, int N)
+{
+    C c1 = make<C>(N, start);
+    test(c1, -10);
+}
+
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<MoveOnly> >(rng[i], rng[j]);
+    }
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<MoveOnly, min_allocator<MoveOnly>> >(rng[i], rng[j]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/copy.pass.cpp
new file mode 100644
index 0000000..b2a0354
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/copy.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// Optimization for deque::iterators
+
+// template <class InputIterator, class OutputIterator>
+//   OutputIterator
+//   copy(InputIterator first, InputIterator last, OutputIterator result);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void testN(int start, int N)
+{
+    typedef typename C::iterator I;
+    typedef typename C::const_iterator CI;
+    typedef random_access_iterator<I> RAI;
+    typedef random_access_iterator<CI> RACI;
+    typedef cpp17_input_iterator<CI> ICI;
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(N);
+    assert(std::copy(c1.cbegin(), c1.cend(), c2.begin()) == c2.end());
+    assert(c1 == c2);
+    assert(std::copy(c2.cbegin(), c2.cend(), c1.begin()) == c1.end());
+    assert(c1 == c2);
+    assert(std::copy(c1.cbegin(), c1.cend(), RAI(c2.begin())) == RAI(c2.end()));
+    assert(c1 == c2);
+    assert(std::copy(c2.cbegin(), c2.cend(), RAI(c1.begin())) == RAI(c1.end()));
+    assert(c1 == c2);
+    assert(std::copy(RACI(c1.cbegin()), RACI(c1.cend()), c2.begin()) == c2.end());
+    assert(c1 == c2);
+    assert(std::copy(ICI(c2.cbegin()), ICI(c2.cend()), c1.begin()) == c1.end());
+    assert(c1 == c2);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/copy_backward.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/copy_backward.pass.cpp
new file mode 100644
index 0000000..b6417f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/copy_backward.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// Optimization for deque::iterators
+
+// template <class InputIterator, class OutputIterator>
+//   OutputIterator
+//   copy_backward(InputIterator first, InputIterator last, OutputIterator result);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void testN(int start, int N)
+{
+    typedef typename C::iterator I;
+    typedef typename C::const_iterator CI;
+    typedef random_access_iterator<I> RAI;
+    typedef random_access_iterator<CI> RACI;
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(N);
+    assert(std::copy_backward(c1.cbegin(), c1.cend(), c2.end()) == c2.begin());
+    assert(c1 == c2);
+    assert(std::copy_backward(c2.cbegin(), c2.cend(), c1.end()) == c1.begin());
+    assert(c1 == c2);
+    assert(std::copy_backward(c1.cbegin(), c1.cend(), RAI(c2.end())) == RAI(c2.begin()));
+    assert(c1 == c2);
+    assert(std::copy_backward(c2.cbegin(), c2.cend(), RAI(c1.end())) == RAI(c1.begin()));
+    assert(c1 == c2);
+    assert(std::copy_backward(RACI(c1.cbegin()), RACI(c1.cend()), c2.end()) == c2.begin());
+    assert(c1 == c2);
+    assert(std::copy_backward(RACI(c2.cbegin()), RACI(c2.cend()), c1.end()) == c1.begin());
+    assert(c1 == c2);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/move.pass.cpp
new file mode 100644
index 0000000..ae0a751
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/move.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// Optimization for deque::iterators
+
+// template <class InputIterator, class OutputIterator>
+//   OutputIterator
+//   move(InputIterator first, InputIterator last, OutputIterator result);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void testN(int start, int N)
+{
+    typedef typename C::iterator I;
+    typedef typename C::const_iterator CI;
+    typedef random_access_iterator<I> RAI;
+    typedef random_access_iterator<CI> RACI;
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(N);
+    assert(std::move(c1.cbegin(), c1.cend(), c2.begin()) == c2.end());
+    assert(c1 == c2);
+    assert(std::move(c2.cbegin(), c2.cend(), c1.begin()) == c1.end());
+    assert(c1 == c2);
+    assert(std::move(c1.cbegin(), c1.cend(), RAI(c2.begin())) == RAI(c2.end()));
+    assert(c1 == c2);
+    assert(std::move(c2.cbegin(), c2.cend(), RAI(c1.begin())) == RAI(c1.end()));
+    assert(c1 == c2);
+    assert(std::move(RACI(c1.cbegin()), RACI(c1.cend()), c2.begin()) == c2.end());
+    assert(c1 == c2);
+    assert(std::move(RACI(c2.cbegin()), RACI(c2.cend()), c1.begin()) == c1.end());
+    assert(c1 == c2);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/move_backward.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/move_backward.pass.cpp
new file mode 100644
index 0000000..50da5b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/move_backward.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// Optimization for deque::iterators
+
+// template <class InputIterator, class OutputIterator>
+//   OutputIterator
+//   move_backward(InputIterator first, InputIterator last, OutputIterator result);
+
+#include <deque>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void testN(int start, int N)
+{
+    typedef typename C::iterator I;
+    typedef typename C::const_iterator CI;
+    typedef random_access_iterator<I> RAI;
+    typedef random_access_iterator<CI> RACI;
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(N);
+    assert(std::move_backward(c1.cbegin(), c1.cend(), c2.end()) == c2.begin());
+    assert(c1 == c2);
+    assert(std::move_backward(c2.cbegin(), c2.cend(), c1.end()) == c1.begin());
+    assert(c1 == c2);
+    assert(std::move_backward(c1.cbegin(), c1.cend(), RAI(c2.end())) == RAI(c2.begin()));
+    assert(c1 == c2);
+    assert(std::move_backward(c2.cbegin(), c2.cend(), RAI(c1.end())) == RAI(c1.begin()));
+    assert(c1 == c2);
+    assert(std::move_backward(RACI(c1.cbegin()), RACI(c1.cend()), c2.end()) == c2.begin());
+    assert(c1 == c2);
+    assert(std::move_backward(RACI(c2.cbegin()), RACI(c2.cend()), c1.end()) == c1.begin());
+    assert(c1 == c2);
+}
+
+int main(int, char**)
+{
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int> >(rng[i], rng[j]);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+    const int N = sizeof(rng)/sizeof(rng[0]);
+    for (int i = 0; i < N; ++i)
+        for (int j = 0; j < N; ++j)
+            testN<std::deque<int, min_allocator<int> > >(rng[i], rng[j]);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/swap.pass.cpp
new file mode 100644
index 0000000..61fa31c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/swap.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// template <class T, class A>
+//   void swap(deque<T, A>& x, deque<T, A>& y);
+
+#include <deque>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+C
+make(int size, int start = 0 )
+{
+    const int b = 4096 / sizeof(int);
+    int init = 0;
+    if (start > 0)
+    {
+        init = (start+1) / b + ((start+1) % b != 0);
+        init *= b;
+        --init;
+    }
+    C c(init, 0);
+    for (int i = 0; i < init-start; ++i)
+        c.pop_back();
+    for (int i = 0; i < size; ++i)
+        c.push_back(i);
+    for (int i = 0; i < start; ++i)
+        c.pop_front();
+    return c;
+}
+
+template <class C>
+void testN(int start, int N, int M)
+{
+    C c1 = make<C>(N, start);
+    C c2 = make<C>(M);
+    C c1_save = c1;
+    C c2_save = c2;
+    swap(c1, c2);
+    assert(c1 == c2_save);
+    assert(c2 == c1_save);
+}
+
+int main(int, char**)
+{
+    {
+        int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+        const int N = sizeof(rng)/sizeof(rng[0]);
+        for (int i = 0; i < N; ++i)
+            for (int j = 0; j < N; ++j)
+                for (int k = 0; k < N; ++k)
+                    testN<std::deque<int> >(rng[i], rng[j], rng[k]);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef test_allocator<int> A;
+        std::deque<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A(1, 1));
+        std::deque<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A(1, 2));
+        swap(c1, c2);
+        assert((c1 == std::deque<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c1.get_allocator().get_id() == 1);
+        assert((c2 == std::deque<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef other_allocator<int> A;
+        std::deque<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A(1));
+        std::deque<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A(2));
+        swap(c1, c2);
+        assert((c1 == std::deque<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c1.get_allocator() == A(2));
+        assert((c2 == std::deque<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(c2.get_allocator() == A(1));
+    }
+#if TEST_STD_VER >= 11
+    {
+        int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
+        const int N = sizeof(rng)/sizeof(rng[0]);
+        for (int i = 0; i < N; ++i)
+            for (int j = 0; j < N; ++j)
+                for (int k = 0; k < N; ++k)
+                    testN<std::deque<int, min_allocator<int>> >(rng[i], rng[j], rng[k]);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef min_allocator<int> A;
+        std::deque<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A());
+        std::deque<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A());
+        swap(c1, c2);
+        assert((c1 == std::deque<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c1.get_allocator() == A());
+        assert((c2 == std::deque<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(c2.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..4ce47f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/deque.special/swap_noexcept.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <deque>
+
+// void swap(deque& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value);
+
+// This tests a conforming extension
+
+#include <deque>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::deque<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
+#if TEST_STD_VER >= 14
+    //  In C++14, if POCS is set, swapping the allocator is required not to throw
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#else
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif
+    }
+#if TEST_STD_VER >= 14
+    {
+        typedef std::deque<MoveOnly, some_alloc2<MoveOnly>> C;
+    //  if the allocators are always equal, then the swap can be noexcept
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/get_allocator.pass.cpp
new file mode 100644
index 0000000..e42dbb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/get_allocator.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// class deque
+
+// allocator_type get_allocator() const
+
+#include <deque>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::deque<int> d(alloc);
+        assert(d.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::deque<int, other_allocator<int> > d(alloc);
+        assert(d.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..3b0aa36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <deque>
+
+#include <iterator>
+
+using iterator = std::deque<int>::iterator;
+using const_iterator = std::deque<int>::const_iterator;
+using reverse_iterator = std::deque<int>::reverse_iterator;
+using const_reverse_iterator = std::deque<int>::const_reverse_iterator;
+using value_type = int;
+
+static_assert(std::random_access_iterator<iterator>);
+static_assert(!std::contiguous_iterator<iterator>);
+static_assert(std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<iterator, iterator>);
+static_assert(std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, iterator>);
+static_assert( std::indirectly_movable_storable<iterator, iterator>);
+static_assert(!std::indirectly_movable<iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_movable<iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_copyable<iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::random_access_iterator<const_iterator>);
+static_assert(!std::contiguous_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<const_iterator, iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_movable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/iterators.pass.cpp
new file mode 100644
index 0000000..1f06ffd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/iterators.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// Test nested types and default template args:
+
+// template <class T, class Allocator = allocator<T> >
+// class deque;
+
+// iterator, const_iterator
+
+#include <deque>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::deque<int> C;
+    C c;
+    C::iterator i;
+    i = c.begin();
+    C::const_iterator j;
+    j = c.cbegin();
+    assert(i == j);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::deque<int, min_allocator<int>> C;
+    C c;
+    C::iterator i;
+    i = c.begin();
+    C::const_iterator j;
+    j = c.cbegin();
+    assert(i == j);
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        std::deque<int>::iterator ii1{}, ii2{};
+        std::deque<int>::iterator ii4 = ii1;
+        std::deque<int>::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+        assert (!(ii1 <  cii ));
+        assert (!(cii <  ii1 ));
+        assert ( (ii1 <= cii ));
+        assert ( (cii <= ii1 ));
+        assert (!(ii1 >  cii ));
+        assert (!(cii >  ii1 ));
+        assert ( (ii1 >= cii ));
+        assert ( (cii >= ii1 ));
+        assert (cii - ii1 == 0);
+        assert (ii1 - cii == 0);
+
+//         std::deque<int> c;
+//         assert ( ii1 != c.cbegin());
+//         assert ( cii != c.begin());
+//         assert ( cii != c.cend());
+//         assert ( ii1 != c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..b413bad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// deque
+
+#include <deque>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::deque<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::random_access_range<range>);
+static_assert(!std::ranges::contiguous_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::random_access_range<range const>);
+static_assert(!std::ranges::contiguous_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/types.pass.cpp
new file mode 100644
index 0000000..bfe4808
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/deque/types.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <deque>
+
+// Test nested types and default template args:
+
+// template <class T, class Allocator = allocator<T> >
+// class deque
+// {
+// public:
+//     typedef T                                        value_type;
+//     typedef Allocator                                allocator_type;
+//     typedef typename allocator_type::reference       reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef implementation-defined                   iterator;
+//     typedef implementation-defined                   const_iterator;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef std::reverse_iterator<iterator>          reverse_iterator;
+//     typedef std::reverse_iterator<const_iterator>    const_reverse_iterator;
+// };
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <deque>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../Copyable.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test()
+{
+    typedef std::deque<T, Allocator> C;
+
+    static_assert((std::is_same<typename C::value_type, T>::value), "");
+    static_assert((std::is_same<typename C::value_type, typename Allocator::value_type>::value), "");
+    static_assert((std::is_same<typename C::allocator_type, Allocator>::value), "");
+    static_assert((std::is_same<typename C::size_type, typename Allocator::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type, typename Allocator::difference_type>::value), "");
+    static_assert((std::is_same<typename C::reference, typename Allocator::reference>::value), "");
+    static_assert((std::is_same<typename C::const_reference, typename Allocator::const_reference>::value), "");
+    static_assert((std::is_same<typename C::pointer, typename Allocator::pointer>::value), "");
+    static_assert((std::is_same<typename C::const_pointer, typename Allocator::const_pointer>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename C::iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename C::const_iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename C::reverse_iterator,
+        std::reverse_iterator<typename C::iterator> >::value), "");
+    static_assert((std::is_same<
+        typename C::const_reverse_iterator,
+        std::reverse_iterator<typename C::const_iterator> >::value), "");
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+}
+
+int main(int, char**)
+{
+    test<int, test_allocator<int> >();
+    test<int*, std::allocator<int*> >();
+    test<Copyable, test_allocator<Copyable> >();
+    static_assert((std::is_same<std::deque<char>::allocator_type,
+                                std::allocator<char> >::value), "");
+
+#if TEST_STD_VER >= 11
+    {
+        typedef std::deque<short, min_allocator<short>> C;
+        static_assert((std::is_same<C::value_type, short>::value), "");
+        static_assert((std::is_same<C::allocator_type, min_allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, min_pointer<C::value_type>>::value), "");
+        static_assert((std::is_same<C::const_pointer, min_pointer<const C::value_type>>::value), "");
+//  min_allocator doesn't have a size_type, so one gets synthesized
+        static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+
+        static_assert((std::is_signed<typename C::difference_type>::value), "");
+        static_assert((std::is_unsigned<typename C::size_type>::value), "");
+        static_assert((std::is_same<typename C::difference_type,
+            typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+        static_assert((std::is_same<typename C::difference_type,
+            typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..42fb8da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+//   The container's value type must be the same as the allocator's value type
+
+#include <forward_list>
+
+int main(int, char**)
+{
+    std::forward_list<int, std::allocator<long> > fl;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/empty.pass.cpp
new file mode 100644
index 0000000..727904c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// class forward_list
+
+// bool empty() const noexcept;
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::forward_list<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_front(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::forward_list<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_front(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/empty.verify.cpp
new file mode 100644
index 0000000..4092f44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// class forward_list
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <forward_list>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::forward_list<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.access/front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.access/front.pass.cpp
new file mode 100644
index 0000000..74eb3e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.access/front.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// reference       front();
+// const_reference front() const;
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        assert(c.front() == 0);
+        c.front() = 10;
+        assert(c.front() == 10);
+        assert(*c.begin() == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const C c(std::begin(t), std::end(t));
+        assert(c.front() == 0);
+        assert(*c.begin() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        assert(c.front() == 0);
+        c.front() = 10;
+        assert(c.front() == 10);
+        assert(*c.begin() == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const C c(std::begin(t), std::end(t));
+        assert(c.front() == 0);
+        assert(*c.begin() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/alloc.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/alloc.compile.fail.cpp
new file mode 100644
index 0000000..bf43ee8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/alloc.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// explicit forward_list(const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "../../../NotConstructible.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<NotConstructible> A;
+        typedef A::value_type T;
+        typedef std::forward_list<T, A> C;
+        C c = A(12);
+        assert(c.get_allocator() == A(12));
+        assert(c.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/alloc.pass.cpp
new file mode 100644
index 0000000..d2dda09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/alloc.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// explicit forward_list(const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../NotConstructible.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<NotConstructible> A;
+        typedef A::value_type T;
+        typedef std::forward_list<T, A> C;
+        C c(A(12));
+        assert(c.get_allocator() == A(12));
+        assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef min_allocator<NotConstructible> A;
+        typedef A::value_type T;
+        typedef std::forward_list<T, A> C;
+        C c(A{});
+        assert(c.get_allocator() == A());
+        assert(c.empty());
+    }
+    {
+        typedef explicit_allocator<NotConstructible> A;
+        typedef A::value_type T;
+        typedef std::forward_list<T, A> C;
+        C c(A{});
+        assert(c.get_allocator() == A());
+        assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..ef2d381
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list& operator=(const forward_list& x);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <forward_list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::forward_list<operator_hijacker> lo;
+  std::forward_list<operator_hijacker> l;
+  l = lo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_copy.pass.cpp
new file mode 100644
index 0000000..07d34a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_copy.pass.cpp
@@ -0,0 +1,148 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list& operator=(const forward_list& x);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(10));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(10));
+    }
+    {
+        typedef int T;
+        typedef test_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(11));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(11));
+    }
+    {
+        typedef int T;
+        typedef test_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(10));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(10));
+    }
+    {
+        typedef int T;
+        typedef test_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(11));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(11));
+    }
+
+    {
+        typedef int T;
+        typedef other_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(10));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(10));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(11));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(10));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(10));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(10));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t0), std::end(t0), A(10));
+        C c1(std::begin(t1), std::end(t1), A(11));
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A(10));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef min_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c0(std::begin(t0), std::end(t0), A());
+        C c1(std::begin(t1), std::end(t1), A());
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t0), std::end(t0), A());
+        C c1(std::begin(t1), std::end(t1), A());
+        c1 = c0;
+        assert(c1 == c0);
+        assert(c1.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_init.pass.cpp
new file mode 100644
index 0000000..6d6b2fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_init.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// void assign(initializer_list<value_type> il);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        c.assign({0, 1, 2, 3, 4, 5, 6, 7, 8, 9});
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        c.assign({10, 11, 12, 13});
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        c.assign({0, 1, 2, 3, 4, 5, 6, 7, 8, 9});
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        c.assign({10, 11, 12, 13});
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_move.pass.cpp
new file mode 100644
index 0000000..1b2aabf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_move.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// forward_list& operator=(forward_list&& x);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        T t1[] = {10, 11, 12, 13};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c1.get_allocator() == A(10));
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        T t1[] = {10, 11, 12, 13};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c1.get_allocator() == A(11));
+        assert(!c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {10, 11, 12, 13};
+        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+        assert(c1.get_allocator() == A(10));
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {10, 11, 12, 13};
+        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+        assert(c1.get_allocator() == A(11));
+        assert(!c0.empty());
+    }
+
+    {
+        typedef MoveOnly T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        T t1[] = {10, 11, 12, 13};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c1.get_allocator() == A(10));
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        T t1[] = {10, 11, 12, 13};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c1.get_allocator() == A(10));
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {10, 11, 12, 13};
+        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(10));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+        assert(c1.get_allocator() == A(10));
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {10, 11, 12, 13};
+        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A(10));
+        C c1(I(std::begin(t1)), I(std::end(t1)), A(11));
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+        assert(c1.get_allocator() == A(10));
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        T t1[] = {10, 11, 12, 13};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A());
+        C c1(I(std::begin(t1)), I(std::end(t1)), A());
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c1.get_allocator() == A());
+        assert(c0.empty());
+    }
+    {
+        typedef MoveOnly T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t0[] = {10, 11, 12, 13};
+        T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t0)), I(std::end(t0)), A());
+        C c1(I(std::begin(t1)), I(std::end(t1)), A());
+        c1 = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c1.cbegin(); i != c1.cend(); ++i, (void) ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+        assert(c1.get_allocator() == A());
+        assert(c0.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_op_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_op_init.pass.cpp
new file mode 100644
index 0000000..b6de0e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_op_init.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// forward_list& operator=(initializer_list<value_type> il);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        c = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        c = {10, 11, 12, 13};
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        c = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        c = {10, 11, 12, 13};
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_range.pass.cpp
new file mode 100644
index 0000000..552cf04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_range.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class InputIterator>
+//     void assign(InputIterator first, InputIterator last);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        typedef cpp17_input_iterator<const T*> I;
+        c.assign(I(std::begin(t0)), I(std::end(t0)));
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        typedef cpp17_input_iterator<const T*> I;
+        c.assign(I(std::begin(t0)), I(std::end(t0)));
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t0[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        typedef cpp17_input_iterator<const T*> I;
+        c.assign(I(std::begin(t0)), I(std::end(t0)));
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t0[] = {10, 11, 12, 13};
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        typedef cpp17_input_iterator<const T*> I;
+        c.assign(I(std::begin(t0)), I(std::end(t0)));
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, (void) ++n)
+            assert(*i == 10+n);
+        assert(n == 4);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_size_value.pass.cpp
new file mode 100644
index 0000000..4824dd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/assign_size_value.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void assign(size_type n, const value_type& v);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        c.assign(10, 1);
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 1);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        c.assign(4, 10);
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10);
+        assert(n == 4);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {10, 11, 12, 13};
+        C c(std::begin(t1), std::end(t1));
+        c.assign(10, 1);
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 1);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t1), std::end(t1));
+        c.assign(4, 10);
+        int n = 0;
+        for (C::const_iterator i = c.cbegin(); i != c.cend(); ++i, ++n)
+            assert(*i == 10);
+        assert(n == 4);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/copy.pass.cpp
new file mode 100644
index 0000000..681629a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/copy.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list(const forward_list& x);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t), std::end(t), A(10));
+        C c = c0;
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c == c0);
+        assert(c.get_allocator() == A(10));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef other_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t), std::end(t), A(10));
+        C c = c0;
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c == c0);
+        assert(c.get_allocator() == A(-2));
+    }
+    {
+        typedef int T;
+        typedef min_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t), std::end(t), A());
+        C c = c0;
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c == c0);
+        assert(c.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..3eb33a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/copy_alloc.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list(const forward_list& x, const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t), std::end(t), A(10));
+        C c(c0, A(9));
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c == c0);
+        assert(c.get_allocator() == A(9));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t), std::end(t), A(10));
+        C c(c0, A(9));
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c == c0);
+        assert(c.get_allocator() == A(9));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef min_allocator<int> A;
+        typedef std::forward_list<T, A> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c0(std::begin(t), std::end(t), A());
+        C c(c0, A());
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c == c0);
+        assert(c.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/deduct.fail.cpp
new file mode 100644
index 0000000..47c1cdc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/deduct.fail.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    forward_list(InputIterator, InputIterator, Allocator = Allocator())
+//    -> forward_list<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <forward_list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+struct A {};
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+
+//  Test the implicit deduction guides
+    {
+//  forward_list (allocator &)
+    std::forward_list fwl((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'forward_list'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      forward_list<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/deduct.pass.cpp
new file mode 100644
index 0000000..74eb69b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/deduct.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    forward_list(InputIterator, InputIterator, Allocator = Allocator())
+//    -> forward_list<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <algorithm>
+#include <forward_list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+    const int arr[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::forward_list fwl(std::begin(arr), std::end(arr));
+
+    static_assert(std::is_same_v<decltype(fwl), std::forward_list<int>>, "");
+    assert(std::equal(fwl.begin(), fwl.end(), std::begin(arr), std::end(arr)));
+    }
+
+    {
+    const long arr[] = {INT_MAX, 1L, 2L, 3L };
+    std::forward_list fwl(std::begin(arr), std::end(arr), std::allocator<long>());
+    static_assert(std::is_same_v<decltype(fwl)::value_type, long>, "");
+    assert(std::distance(fwl.begin(), fwl.end()) == 4); // no size for forward_list
+    auto it = fwl.begin();
+    assert(*it++ == INT_MAX);
+    assert(*it++ == 1L);
+    assert(*it++ == 2L);
+    }
+
+//  Test the implicit deduction guides
+
+    {
+//  We don't expect this one to work.
+//  std::forward_list fwl(std::allocator<int>()); // deque (allocator &)
+    }
+
+    {
+    std::forward_list fwl(1, A{}); // deque (size_type, T)
+    static_assert(std::is_same_v<decltype(fwl)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(fwl)::allocator_type, std::allocator<A>>, "");
+    assert(std::distance(fwl.begin(), fwl.end()) == 1); // no size for forward_list
+    }
+
+    {
+    std::forward_list fwl(1, A{}, test_allocator<A>()); // deque (size_type, T, allocator)
+    static_assert(std::is_same_v<decltype(fwl)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(fwl)::allocator_type, test_allocator<A>>, "");
+    assert(std::distance(fwl.begin(), fwl.end()) == 1); // no size for forward_list
+    }
+
+    {
+    std::forward_list fwl{1U, 2U, 3U, 4U, 5U}; // deque(initializer-list)
+    static_assert(std::is_same_v<decltype(fwl)::value_type, unsigned>, "");
+    assert(std::distance(fwl.begin(), fwl.end()) == 5); // no size for forward_list
+    auto it = fwl.begin();
+    std::advance(it, 2);
+    assert(*it == 3U);
+    }
+
+    {
+    std::forward_list fwl({1.0, 2.0, 3.0, 4.0}, test_allocator<double>()); // deque(initializer-list, allocator)
+    static_assert(std::is_same_v<decltype(fwl)::value_type, double>, "");
+    static_assert(std::is_same_v<decltype(fwl)::allocator_type, test_allocator<double>>, "");
+    assert(std::distance(fwl.begin(), fwl.end()) == 4); // no size for forward_list
+    auto it = fwl.begin();
+    std::advance(it, 3);
+    assert(*it == 4.0);
+    }
+
+    {
+    std::forward_list<long double> source;
+    std::forward_list fwl(source); // deque(deque &)
+    static_assert(std::is_same_v<decltype(fwl)::value_type, long double>, "");
+    static_assert(std::is_same_v<decltype(fwl)::allocator_type, std::allocator<long double>>, "");
+    assert(std::distance(fwl.begin(), fwl.end()) == 0); // no size for forward_list
+    }
+
+    {
+        typedef test_allocator<short> Alloc;
+        typedef test_allocator<int> ConvertibleToAlloc;
+
+        {
+        std::forward_list<short, Alloc> source;
+        std::forward_list fwl(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(fwl), decltype(source)>);
+        }
+
+        {
+        std::forward_list<short, Alloc> source;
+        std::forward_list fwl(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(fwl), decltype(source)>);
+        }
+
+        {
+        std::forward_list<short, Alloc> source;
+        std::forward_list fwl(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(fwl), decltype(source)>);
+        }
+
+        {
+        std::forward_list<short, Alloc> source;
+        std::forward_list fwl(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(fwl), decltype(source)>);
+        }
+    }
+
+    SequenceContainerDeductionGuidesSfinaeAway<std::forward_list, std::forward_list<int>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default.pass.cpp
new file mode 100644
index 0000000..7313909
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list();
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c;
+        assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        assert(c.empty());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c = {};
+        assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..772a985
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list()
+//        noexcept(is_nothrow_default_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::forward_list<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::forward_list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default_recursive.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default_recursive.pass.cpp
new file mode 100644
index 0000000..affe050
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/default_recursive.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// class forward_list
+
+// forward_list();
+
+#include <forward_list>
+
+#include "test_macros.h"
+
+struct X
+{
+    std::forward_list<X> q;
+};
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..ae6fd62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// ~forward_list() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    ~some_alloc() noexcept(false);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::forward_list<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::forward_list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/init.pass.cpp
new file mode 100644
index 0000000..8db81e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/init.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// forward_list(initializer_list<value_type> il);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/init_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/init_alloc.pass.cpp
new file mode 100644
index 0000000..f742ba1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/init_alloc.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// forward_list(initializer_list<value_type> il, const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c({0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A(14));
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c.get_allocator() == A(14));
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c({0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A());
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == 10);
+        assert(c.get_allocator() == A());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move.pass.cpp
new file mode 100644
index 0000000..c64baf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// forward_list(forward_list&& x);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t)), I(std::end(t)), A(10));
+        C c = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c0.empty());
+        assert(c.get_allocator() == A(10));
+    }
+    {
+        typedef MoveOnly T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t)), I(std::end(t)), A(10));
+        C c = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c0.empty());
+        assert(c.get_allocator() == A(10));
+    }
+    {
+        typedef MoveOnly T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t)), I(std::end(t)), A());
+        C c = std::move(c0);
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c0.empty());
+        assert(c.get_allocator() == A());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..56eaa56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_alloc.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// forward_list(forward_list&& x, const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t)), I(std::end(t)), A(10));
+        C c(std::move(c0), A(10));
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == static_cast<unsigned>(std::end(t) - std::begin(t)));
+        assert(c0.empty());
+        assert(c.get_allocator() == A(10));
+    }
+    {
+        typedef MoveOnly T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t)), I(std::end(t)), A(10));
+        C c(std::move(c0), A(9));
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == static_cast<unsigned>(std::end(t) - std::begin(t)));
+        assert(!c0.empty());
+        assert(c.get_allocator() == A(9));
+    }
+    {
+        typedef MoveOnly T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        typedef std::move_iterator<T*> I;
+        C c0(I(std::begin(t)), I(std::end(t)), A());
+        C c(std::move(c0), A());
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, (void) ++n)
+            assert(*i == n);
+        assert(n == static_cast<unsigned>(std::end(t) - std::begin(t)));
+        assert(c0.empty());
+        assert(c.get_allocator() == A());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..63168c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list& operator=(forward_list&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::forward_list<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::forward_list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..edd3449
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/move_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list(forward_list&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::forward_list<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/range.pass.cpp
new file mode 100644
index 0000000..e8c54c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/range.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class InputIterator>
+//     forward_list(InputIterator first, InputIterator last);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        typedef cpp17_input_iterator<const T*> I;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(I(std::begin(t)), I(std::end(t)));
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef cpp17_input_iterator<const T*> I;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(I(std::begin(t)), I(std::end(t)));
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/range_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/range_alloc.pass.cpp
new file mode 100644
index 0000000..67712fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/range_alloc.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class InputIterator>
+//     forward_list(InputIterator first, InputIterator last,
+//                  const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        typedef cpp17_input_iterator<const T*> I;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(I(std::begin(t)), I(std::end(t)), A(13));
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c.get_allocator() == A(13));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        typedef cpp17_input_iterator<const T*> I;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(I(std::begin(t)), I(std::end(t)), A());
+        int n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == n);
+        assert(n == std::end(t) - std::begin(t));
+        assert(c.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size.pass.cpp
new file mode 100644
index 0000000..ca3931d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// explicit forward_list(size_type n);
+// explicit forward_list(size_type n, const Alloc& a);
+
+#include <forward_list>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void check_allocator(unsigned n, Allocator const &alloc = Allocator())
+{
+#if TEST_STD_VER > 11
+    typedef std::forward_list<T, Allocator> C;
+    C d(n, alloc);
+    assert(d.get_allocator() == alloc);
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == n);
+#else
+    ((void)n);
+    ((void)alloc);
+#endif
+}
+
+int main(int, char**)
+{
+    { // test that the ctor is explicit
+      typedef std::forward_list<DefaultOnly> C;
+      static_assert((std::is_constructible<C, size_t>::value), "");
+      static_assert((!std::is_convertible<size_t, C>::value), "");
+    }
+    {
+        typedef DefaultOnly T;
+        typedef std::forward_list<T> C;
+        unsigned N = 10;
+        C c(N);
+        unsigned n = 0;
+
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n) {
+#if TEST_STD_VER >= 11
+            assert(*i == T());
+#else
+            ((void)0);
+#endif
+        }
+        assert(n == N);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef DefaultOnly T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        unsigned N = 10;
+        C c(N);
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == T());
+        assert(n == N);
+        check_allocator<T, min_allocator<T>> ( 0 );
+        check_allocator<T, min_allocator<T>> ( 3 );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size_value.pass.cpp
new file mode 100644
index 0000000..4da7394
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size_value.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list(size_type n, const value_type& v);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        T v(6);
+        unsigned N = 10;
+        C c(N, v);
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == v);
+        assert(n == N);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        T v(6);
+        unsigned N = 10;
+        C c(N, v);
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == v);
+        assert(n == N);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size_value_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size_value_alloc.pass.cpp
new file mode 100644
index 0000000..fb37e8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.cons/size_value_alloc.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list(size_type n, const value_type& v, const allocator_type& a);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef A::value_type T;
+        typedef std::forward_list<T, A> C;
+        T v(6);
+        unsigned N = 10;
+        C c(N, v, A(12));
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == v);
+        assert(n == N);
+        assert(c.get_allocator() == A(12));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef min_allocator<int> A;
+        typedef A::value_type T;
+        typedef std::forward_list<T, A> C;
+        T v(6);
+        unsigned N = 10;
+        C c(N, v, A());
+        unsigned n = 0;
+        for (C::const_iterator i = c.begin(), e = c.end(); i != e; ++i, ++n)
+            assert(*i == v);
+        assert(n == N);
+        assert(c.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.erasure/erase.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.erasure/erase.pass.cpp
new file mode 100644
index 0000000..e6eb6f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.erasure/erase.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <forward_list>
+
+// template <class T, class Allocator, class U>
+//   typename forward_list<T, Allocator>::size_type
+//   erase(forward_list<T, Allocator>& c, const U& value);
+
+#include <forward_list>
+#include <optional>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class U>
+void test0(S s, U val, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase(s, val)));
+  assert(expected_erased_count == std::erase(s, val));
+  assert(s == expected);
+}
+
+template <class S>
+void test()
+{
+  test0(S(), 1, S(), 0);
+
+  test0(S({1}), 1, S(), 1);
+  test0(S({1}), 2, S({1}), 0);
+
+  test0(S({1, 2}), 1, S({2}), 1);
+  test0(S({1, 2}), 2, S({1}), 1);
+  test0(S({1, 2}), 3, S({1, 2}), 0);
+  test0(S({1, 1}), 1, S(), 2);
+  test0(S({1, 1}), 3, S({1, 1}), 0);
+
+  test0(S({1, 2, 3}), 1, S({2, 3}), 1);
+  test0(S({1, 2, 3}), 2, S({1, 3}), 1);
+  test0(S({1, 2, 3}), 3, S({1, 2}), 1);
+  test0(S({1, 2, 3}), 4, S({1, 2, 3}), 0);
+
+  test0(S({1, 1, 1}), 1, S(), 3);
+  test0(S({1, 1, 1}), 2, S({1, 1, 1}), 0);
+  test0(S({1, 1, 2}), 1, S({2}), 2);
+  test0(S({1, 1, 2}), 2, S({1, 1}), 1);
+  test0(S({1, 1, 2}), 3, S({1, 1, 2}), 0);
+  test0(S({1, 2, 2}), 1, S({2, 2}), 1);
+  test0(S({1, 2, 2}), 2, S({1}), 2);
+  test0(S({1, 2, 2}), 3, S({1, 2, 2}), 0);
+
+  //  Test cross-type erasure
+  using opt = std::optional<typename S::value_type>;
+  test0(S({1, 2, 1}), opt(), S({1, 2, 1}), 0);
+  test0(S({1, 2, 1}), opt(1), S({2}), 2);
+  test0(S({1, 2, 1}), opt(2), S({1, 1}), 1);
+  test0(S({1, 2, 1}), opt(3), S({1, 2, 1}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::forward_list<int>>();
+    test<std::forward_list<int, min_allocator<int>>> ();
+    test<std::forward_list<int, test_allocator<int>>> ();
+
+    test<std::forward_list<long>>();
+    test<std::forward_list<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..21de03a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.erasure/erase_if.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <forward_list>
+
+// template <class T, class Allocator, class Predicate>
+//   typename forward_list<T, Allocator>::size_type
+//   erase_if(forward_list<T, Allocator>& c, Predicate pred);
+
+#include <forward_list>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == expected);
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(), is1, S(), 0);
+
+    test0(S({1}), is1, S(), 1);
+    test0(S({1}), is2, S({1}), 0);
+
+    test0(S({1, 2}), is1, S({2}), 1);
+    test0(S({1, 2}), is2, S({1}), 1);
+    test0(S({1, 2}), is3, S({1, 2}), 0);
+    test0(S({1, 1}), is1, S(), 2);
+    test0(S({1, 1}), is3, S({1, 1}), 0);
+
+    test0(S({1, 2, 3}), is1, S({2, 3}), 1);
+    test0(S({1, 2, 3}), is2, S({1, 3}), 1);
+    test0(S({1, 2, 3}), is3, S({1, 2}), 1);
+    test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
+
+    test0(S({1, 1, 1}), is1, S(), 3);
+    test0(S({1, 1, 1}), is2, S({1, 1, 1}), 0);
+    test0(S({1, 1, 2}), is1, S({2}), 2);
+    test0(S({1, 1, 2}), is2, S({1, 1}), 1);
+    test0(S({1, 1, 2}), is3, S({1, 1, 2}), 0);
+    test0(S({1, 2, 2}), is1, S({2, 2}), 1);
+    test0(S({1, 2, 2}), is2, S({1}), 2);
+    test0(S({1, 2, 2}), is3, S({1, 2, 2}), 0);
+
+    test0(S({1, 2, 3}), True, S(), 3);
+    test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::forward_list<int>>();
+    test<std::forward_list<int, min_allocator<int>>> ();
+    test<std::forward_list<int, test_allocator<int>>> ();
+
+    test<std::forward_list<long>>();
+    test<std::forward_list<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/before_begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/before_begin.pass.cpp
new file mode 100644
index 0000000..d633a64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/before_begin.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// iterator       before_begin();
+// const_iterator before_begin() const;
+// const_iterator cbefore_begin() const;
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c;
+        C::iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 1);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const C c;
+        C::const_iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 1);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const C c;
+        C::const_iterator i = c.cbefore_begin();
+        assert(std::distance(i, c.end()) == 1);
+        assert(c.cbefore_begin() == c.before_begin());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 11);
+        assert(std::next(c.before_begin()) == c.begin());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const C c(std::begin(t), std::end(t));
+        C::const_iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 11);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        C::iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 1);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const C c;
+        C::const_iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 1);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const C c;
+        C::const_iterator i = c.cbefore_begin();
+        assert(std::distance(i, c.end()) == 1);
+        assert(c.cbefore_begin() == c.before_begin());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 11);
+        assert(std::next(c.before_begin()) == c.begin());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const C c(std::begin(t), std::end(t));
+        C::const_iterator i = c.before_begin();
+        assert(std::distance(i, c.end()) == 11);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..4a1c455
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator
+
+#include <forward_list>
+
+#include <iterator>
+
+using iterator = std::forward_list<int>::iterator;
+using const_iterator = std::forward_list<int>::const_iterator;
+using value_type = int;
+
+static_assert(std::forward_iterator<iterator>);
+static_assert(!std::bidirectional_iterator<iterator>);
+static_assert(std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert( std::indirectly_movable<iterator, iterator>);
+static_assert( std::indirectly_movable_storable<iterator, iterator>);
+static_assert(!std::indirectly_movable<iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_copyable<iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_iterator>);
+static_assert(std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::forward_iterator<const_iterator>);
+static_assert(!std::bidirectional_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert( std::indirectly_movable<const_iterator, iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/iterators.pass.cpp
new file mode 100644
index 0000000..e544110
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.iter/iterators.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// iterator       begin();
+// iterator       end();
+// const_iterator begin()  const;
+// const_iterator end()    const;
+// const_iterator cbegin() const;
+// const_iterator cend()   const;
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 1);
+        *i = 10;
+        assert(*i == 10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C::iterator i;
+        C::const_iterator j;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 1);
+        *i = 10;
+        assert(*i == 10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C::iterator i;
+        C::const_iterator j;
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        std::forward_list<int>::iterator ii1{}, ii2{};
+        std::forward_list<int>::iterator ii4 = ii1;
+        std::forward_list<int>::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+
+//         std::forward_list<int> c;
+//         assert ( ii1 != c.cbegin());
+//         assert ( cii != c.begin());
+//         assert ( cii != c.cend());
+//         assert ( ii1 != c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..55ce87c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/clear.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void clear() noexcept;
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef NotConstructible T;
+        typedef std::forward_list<T> C;
+        C c;
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef NotConstructible T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        c.clear();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/emplace_after.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/emplace_after.pass.cpp
new file mode 100644
index 0000000..0d45323
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/emplace_after.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// template <class... Args>
+//     iterator emplace_after(const_iterator p, Args&&... args);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef Emplaceable T;
+        typedef std::forward_list<T> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.emplace_after(c.cbefore_begin());
+        assert(i == c.begin());
+        assert(c.front() == Emplaceable());
+        assert(std::distance(c.begin(), c.end()) == 1);
+
+        i = c.emplace_after(c.cbegin(), 1, 2.5);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == Emplaceable());
+        assert(*std::next(c.begin()) == Emplaceable(1, 2.5));
+        assert(std::distance(c.begin(), c.end()) == 2);
+
+        i = c.emplace_after(std::next(c.cbegin()), 2, 3.5);
+        assert(i == std::next(c.begin(), 2));
+        assert(c.front() == Emplaceable());
+        assert(*std::next(c.begin()) == Emplaceable(1, 2.5));
+        assert(*std::next(c.begin(), 2) == Emplaceable(2, 3.5));
+        assert(std::distance(c.begin(), c.end()) == 3);
+
+        i = c.emplace_after(c.cbegin(), 3, 4.5);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == Emplaceable());
+        assert(*std::next(c.begin(), 1) == Emplaceable(3, 4.5));
+        assert(*std::next(c.begin(), 2) == Emplaceable(1, 2.5));
+        assert(*std::next(c.begin(), 3) == Emplaceable(2, 3.5));
+        assert(std::distance(c.begin(), c.end()) == 4);
+    }
+    {
+        typedef Emplaceable T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.emplace_after(c.cbefore_begin());
+        assert(i == c.begin());
+        assert(c.front() == Emplaceable());
+        assert(std::distance(c.begin(), c.end()) == 1);
+
+        i = c.emplace_after(c.cbegin(), 1, 2.5);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == Emplaceable());
+        assert(*std::next(c.begin()) == Emplaceable(1, 2.5));
+        assert(std::distance(c.begin(), c.end()) == 2);
+
+        i = c.emplace_after(std::next(c.cbegin()), 2, 3.5);
+        assert(i == std::next(c.begin(), 2));
+        assert(c.front() == Emplaceable());
+        assert(*std::next(c.begin()) == Emplaceable(1, 2.5));
+        assert(*std::next(c.begin(), 2) == Emplaceable(2, 3.5));
+        assert(std::distance(c.begin(), c.end()) == 3);
+
+        i = c.emplace_after(c.cbegin(), 3, 4.5);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == Emplaceable());
+        assert(*std::next(c.begin(), 1) == Emplaceable(3, 4.5));
+        assert(*std::next(c.begin(), 2) == Emplaceable(1, 2.5));
+        assert(*std::next(c.begin(), 3) == Emplaceable(2, 3.5));
+        assert(std::distance(c.begin(), c.end()) == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/emplace_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/emplace_front.pass.cpp
new file mode 100644
index 0000000..47e79cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/emplace_front.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// template <class... Args> reference emplace_front(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef Emplaceable T;
+        typedef std::forward_list<T> C;
+        C c;
+#if TEST_STD_VER > 14
+        T& r1 = c.emplace_front();
+        assert(c.front() == Emplaceable());
+        assert(&r1 == &c.front());
+        assert(std::distance(c.begin(), c.end()) == 1);
+        T& r2 = c.emplace_front(1, 2.5);
+        assert(c.front() == Emplaceable(1, 2.5));
+        assert(&r2 == &c.front());
+#else
+        c.emplace_front();
+        assert(c.front() == Emplaceable());
+        assert(std::distance(c.begin(), c.end()) == 1);
+        c.emplace_front(1, 2.5);
+        assert(c.front() == Emplaceable(1, 2.5));
+#endif
+        assert(*std::next(c.begin()) == Emplaceable());
+        assert(std::distance(c.begin(), c.end()) == 2);
+    }
+    {
+        typedef Emplaceable T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+#if TEST_STD_VER > 14
+        T& r1 = c.emplace_front();
+        assert(c.front() == Emplaceable());
+        assert(&r1 == &c.front());
+        assert(std::distance(c.begin(), c.end()) == 1);
+        T& r2 = c.emplace_front(1, 2.5);
+        assert(c.front() == Emplaceable(1, 2.5));
+        assert(&r2 == &c.front());
+#else
+        c.emplace_front();
+        assert(c.front() == Emplaceable());
+        assert(std::distance(c.begin(), c.end()) == 1);
+        c.emplace_front(1, 2.5);
+        assert(c.front() == Emplaceable(1, 2.5));
+#endif
+        assert(*std::next(c.begin()) == Emplaceable());
+        assert(std::distance(c.begin(), c.end()) == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/erase_after_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/erase_after_many.pass.cpp
new file mode 100644
index 0000000..5147655
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/erase_after_many.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// iterator erase_after(const_iterator first, const_iterator last);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+
+        C::iterator i = c.erase_after(std::next(c.cbefore_begin(), 4), std::next(c.cbefore_begin(), 4));
+        assert(i == std::next(c.cbefore_begin(), 4));
+        assert(std::distance(c.begin(), c.end()) == 10);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 3);
+        assert(*std::next(c.begin(), 4) == 4);
+        assert(*std::next(c.begin(), 5) == 5);
+        assert(*std::next(c.begin(), 6) == 6);
+        assert(*std::next(c.begin(), 7) == 7);
+        assert(*std::next(c.begin(), 8) == 8);
+        assert(*std::next(c.begin(), 9) == 9);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 2), std::next(c.cbefore_begin(), 5));
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 8);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 5);
+        assert(*std::next(c.begin(), 4) == 6);
+        assert(*std::next(c.begin(), 5) == 7);
+        assert(*std::next(c.begin(), 6) == 8);
+        assert(*std::next(c.begin(), 7) == 9);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 2), std::next(c.cbefore_begin(), 3));
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 8);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 5);
+        assert(*std::next(c.begin(), 4) == 6);
+        assert(*std::next(c.begin(), 5) == 7);
+        assert(*std::next(c.begin(), 6) == 8);
+        assert(*std::next(c.begin(), 7) == 9);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 5), std::next(c.cbefore_begin(), 9));
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 5);
+        assert(*std::next(c.begin(), 4) == 6);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0), std::next(c.cbefore_begin(), 2));
+        assert(i == c.begin());
+        assert(std::distance(c.begin(), c.end()) == 4);
+        assert(*std::next(c.begin(), 0) == 1);
+        assert(*std::next(c.begin(), 1) == 4);
+        assert(*std::next(c.begin(), 2) == 5);
+        assert(*std::next(c.begin(), 3) == 6);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0), std::next(c.cbefore_begin(), 5));
+        assert(i == c.begin());
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+
+        C::iterator i = c.erase_after(std::next(c.cbefore_begin(), 4), std::next(c.cbefore_begin(), 4));
+        assert(i == std::next(c.cbefore_begin(), 4));
+        assert(std::distance(c.begin(), c.end()) == 10);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 3);
+        assert(*std::next(c.begin(), 4) == 4);
+        assert(*std::next(c.begin(), 5) == 5);
+        assert(*std::next(c.begin(), 6) == 6);
+        assert(*std::next(c.begin(), 7) == 7);
+        assert(*std::next(c.begin(), 8) == 8);
+        assert(*std::next(c.begin(), 9) == 9);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 2), std::next(c.cbefore_begin(), 5));
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 8);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 5);
+        assert(*std::next(c.begin(), 4) == 6);
+        assert(*std::next(c.begin(), 5) == 7);
+        assert(*std::next(c.begin(), 6) == 8);
+        assert(*std::next(c.begin(), 7) == 9);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 2), std::next(c.cbefore_begin(), 3));
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 8);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 5);
+        assert(*std::next(c.begin(), 4) == 6);
+        assert(*std::next(c.begin(), 5) == 7);
+        assert(*std::next(c.begin(), 6) == 8);
+        assert(*std::next(c.begin(), 7) == 9);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 5), std::next(c.cbefore_begin(), 9));
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 5);
+        assert(*std::next(c.begin(), 4) == 6);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0), std::next(c.cbefore_begin(), 2));
+        assert(i == c.begin());
+        assert(std::distance(c.begin(), c.end()) == 4);
+        assert(*std::next(c.begin(), 0) == 1);
+        assert(*std::next(c.begin(), 1) == 4);
+        assert(*std::next(c.begin(), 2) == 5);
+        assert(*std::next(c.begin(), 3) == 6);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0), std::next(c.cbefore_begin(), 5));
+        assert(i == c.begin());
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/erase_after_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/erase_after_one.pass.cpp
new file mode 100644
index 0000000..ce03595
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/erase_after_one.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// iterator erase_after(const_iterator p);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        C::iterator i = c.erase_after(std::next(c.cbefore_begin(), 4));
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 4);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 3);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0));
+        assert(i == c.begin());
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 1);
+        assert(*std::next(c.begin(), 1) == 2);
+        assert(*std::next(c.begin(), 2) == 3);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 1));
+        assert(i == std::next(c.begin()));
+        assert(std::distance(c.begin(), c.end()) == 2);
+        assert(*std::next(c.begin(), 0) == 1);
+        assert(*std::next(c.begin(), 1) == 3);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 1));
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 1);
+        assert(*std::next(c.begin(), 0) == 1);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0));
+        assert(i == c.begin());
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        C::iterator i = c.erase_after(std::next(c.cbefore_begin(), 4));
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 4);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 3);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0));
+        assert(i == c.begin());
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 1);
+        assert(*std::next(c.begin(), 1) == 2);
+        assert(*std::next(c.begin(), 2) == 3);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 1));
+        assert(i == std::next(c.begin()));
+        assert(std::distance(c.begin(), c.end()) == 2);
+        assert(*std::next(c.begin(), 0) == 1);
+        assert(*std::next(c.begin(), 1) == 3);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 1));
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 1);
+        assert(*std::next(c.begin(), 0) == 1);
+
+        i = c.erase_after(std::next(c.cbefore_begin(), 0));
+        assert(i == c.begin());
+        assert(i == c.end());
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_const.pass.cpp
new file mode 100644
index 0000000..46cbc0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_const.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// iterator insert_after(const_iterator p, const value_type& v);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), 0);
+        assert(i == c.begin());
+        assert(c.front() == 0);
+        assert(c.front() == 0);
+        assert(std::distance(c.begin(), c.end()) == 1);
+
+        i = c.insert_after(c.cbegin(), 1);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+
+        i = c.insert_after(std::next(c.cbegin()), 2);
+        assert(i == std::next(c.begin(), 2));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(std::distance(c.begin(), c.end()) == 3);
+
+        i = c.insert_after(c.cbegin(), 3);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 1);
+        assert(*std::next(c.begin(), 3) == 2);
+        assert(std::distance(c.begin(), c.end()) == 4);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), 0);
+        assert(i == c.begin());
+        assert(c.front() == 0);
+        assert(c.front() == 0);
+        assert(std::distance(c.begin(), c.end()) == 1);
+
+        i = c.insert_after(c.cbegin(), 1);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+
+        i = c.insert_after(std::next(c.cbegin()), 2);
+        assert(i == std::next(c.begin(), 2));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(std::distance(c.begin(), c.end()) == 3);
+
+        i = c.insert_after(c.cbegin(), 3);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 1);
+        assert(*std::next(c.begin(), 3) == 2);
+        assert(std::distance(c.begin(), c.end()) == 4);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_init.pass.cpp
new file mode 100644
index 0000000..193cb24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_init.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// iterator insert_after(const_iterator p, initializer_list<value_type> il);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), {});
+        assert(i == c.before_begin());
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        i = c.insert_after(c.cbefore_begin(), {0, 1, 2});
+        assert(i == std::next(c.before_begin(), 3));
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        i = c.insert_after(c.begin(), {3, 4});
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 1);
+        assert(*std::next(c.begin(), 4) == 2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), {});
+        assert(i == c.before_begin());
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        i = c.insert_after(c.cbefore_begin(), {0, 1, 2});
+        assert(i == std::next(c.before_begin(), 3));
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        i = c.insert_after(c.begin(), {3, 4});
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 1);
+        assert(*std::next(c.begin(), 4) == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_range.pass.cpp
new file mode 100644
index 0000000..8d70b0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_range.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class InputIterator>
+//     iterator insert_after(const_iterator p,
+//                           InputIterator first, InputIterator last);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        typedef C::iterator I;
+        typedef cpp17_input_iterator<const T*> J;
+        C c;
+        const T t[] = {0, 1, 2, 3, 4};
+        I i = c.insert_after(c.cbefore_begin(), J(t), J(t));
+        assert(i == c.before_begin());
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        i = c.insert_after(c.cbefore_begin(), J(t), J(t+3));
+        assert(i == std::next(c.before_begin(), 3));
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        i = c.insert_after(c.begin(), J(t+3), J(t+5));
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 1);
+        assert(*std::next(c.begin(), 4) == 2);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef C::iterator I;
+        typedef cpp17_input_iterator<const T*> J;
+        C c;
+        const T t[] = {0, 1, 2, 3, 4};
+        I i = c.insert_after(c.cbefore_begin(), J(t), J(t));
+        assert(i == c.before_begin());
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        i = c.insert_after(c.cbefore_begin(), J(t), J(t+3));
+        assert(i == std::next(c.before_begin(), 3));
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        i = c.insert_after(c.begin(), J(t+3), J(t+5));
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 4);
+        assert(*std::next(c.begin(), 3) == 1);
+        assert(*std::next(c.begin(), 4) == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_rv.pass.cpp
new file mode 100644
index 0000000..083bdd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_rv.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// iterator insert_after(const_iterator p, value_type&& v);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly T;
+        typedef std::forward_list<T> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), 0);
+        assert(i == c.begin());
+        assert(c.front() == 0);
+        assert(c.front() == 0);
+        assert(std::distance(c.begin(), c.end()) == 1);
+
+        i = c.insert_after(c.cbegin(), 1);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+
+        i = c.insert_after(std::next(c.cbegin()), 2);
+        assert(i == std::next(c.begin(), 2));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(std::distance(c.begin(), c.end()) == 3);
+
+        i = c.insert_after(c.cbegin(), 3);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 1);
+        assert(*std::next(c.begin(), 3) == 2);
+        assert(std::distance(c.begin(), c.end()) == 4);
+    }
+    {
+        typedef MoveOnly T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), 0);
+        assert(i == c.begin());
+        assert(c.front() == 0);
+        assert(c.front() == 0);
+        assert(std::distance(c.begin(), c.end()) == 1);
+
+        i = c.insert_after(c.cbegin(), 1);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+
+        i = c.insert_after(std::next(c.cbegin()), 2);
+        assert(i == std::next(c.begin(), 2));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin()) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(std::distance(c.begin(), c.end()) == 3);
+
+        i = c.insert_after(c.cbegin(), 3);
+        assert(i == std::next(c.begin()));
+        assert(c.front() == 0);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 1);
+        assert(*std::next(c.begin(), 3) == 2);
+        assert(std::distance(c.begin(), c.end()) == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_size_value.pass.cpp
new file mode 100644
index 0000000..1ef7f16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/insert_after_size_value.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// iterator insert_after(const_iterator p, size_type n, const value_type& v);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), 0, 0);
+        assert(i == c.before_begin());
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        i = c.insert_after(c.cbefore_begin(), 3, 3);
+        assert(i == std::next(c.before_begin(), 3));
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 3);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 3);
+
+        i = c.insert_after(c.begin(), 2, 2);
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 3);
+        assert(*std::next(c.begin(), 1) == 2);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 3);
+        assert(*std::next(c.begin(), 4) == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef C::iterator I;
+        C c;
+        I i = c.insert_after(c.cbefore_begin(), 0, 0);
+        assert(i == c.before_begin());
+        assert(std::distance(c.begin(), c.end()) == 0);
+
+        i = c.insert_after(c.cbefore_begin(), 3, 3);
+        assert(i == std::next(c.before_begin(), 3));
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 3);
+        assert(*std::next(c.begin(), 1) == 3);
+        assert(*std::next(c.begin(), 2) == 3);
+
+        i = c.insert_after(c.begin(), 2, 2);
+        assert(i == std::next(c.begin(), 2));
+        assert(std::distance(c.begin(), c.end()) == 5);
+        assert(*std::next(c.begin(), 0) == 3);
+        assert(*std::next(c.begin(), 1) == 2);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 3);
+        assert(*std::next(c.begin(), 4) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/pop_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/pop_front.pass.cpp
new file mode 100644
index 0000000..5022353
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/pop_front.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void pop_front();
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        typedef std::forward_list<T> C;
+        C c;
+        c.push_front(1);
+        c.push_front(3);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 1);
+        assert(c.front() == 1);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef MoveOnly T;
+        typedef std::forward_list<T> C;
+        C c;
+        c.push_front(1);
+        c.push_front(3);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 1);
+        assert(c.front() == 1);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        c.push_front(1);
+        c.push_front(3);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 1);
+        assert(c.front() == 1);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef MoveOnly T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        c.push_front(1);
+        c.push_front(3);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 1);
+        assert(c.front() == 1);
+        c.pop_front();
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_const.pass.cpp
new file mode 100644
index 0000000..e2a1638
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_const.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void push_front(const value_type& v);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c;
+        c.push_front(1);
+        assert(c.front() == 1);
+        assert(std::distance(c.begin(), c.end()) == 1);
+        c.push_front(3);
+        assert(c.front() == 3);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        c.push_front(1);
+        assert(c.front() == 1);
+        assert(std::distance(c.begin(), c.end()) == 1);
+        c.push_front(3);
+        assert(c.front() == 3);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp
new file mode 100644
index 0000000..57b9f58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_exception_safety.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <forward_list>
+
+// void push_front(const value_type& x);
+
+#include <forward_list>
+#include <cassert>
+#include <exception>
+
+#include "test_macros.h"
+
+// Flag that makes the copy constructor for CMyClass throw an exception
+static bool gCopyConstructorShouldThow = false;
+
+
+class CMyClass {
+    public: CMyClass();
+    public: CMyClass(const CMyClass& iOther);
+    public: ~CMyClass();
+
+    private: int fMagicValue;
+
+    private: static int kStartedConstructionMagicValue;
+    private: static int kFinishedConstructionMagicValue;
+};
+
+// Value for fMagicValue when the constructor has started running, but not yet finished
+int CMyClass::kStartedConstructionMagicValue = 0;
+// Value for fMagicValue when the constructor has finished running
+int CMyClass::kFinishedConstructionMagicValue = 12345;
+
+CMyClass::CMyClass() :
+    fMagicValue(kStartedConstructionMagicValue)
+{
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::CMyClass(const CMyClass& /*iOther*/) :
+    fMagicValue(kStartedConstructionMagicValue)
+{
+    // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
+    if (gCopyConstructorShouldThow) {
+        throw std::exception();
+    }
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::~CMyClass() {
+    // Only instances for which the constructor has finished running should be destructed
+    assert(fMagicValue == kFinishedConstructionMagicValue);
+}
+
+int main(int, char**)
+{
+    CMyClass instance;
+    std::forward_list<CMyClass> vec;
+
+    vec.push_front(instance);
+
+    gCopyConstructorShouldThow = true;
+    try {
+        vec.push_front(instance);
+    }
+    catch (...) {
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_rv.pass.cpp
new file mode 100644
index 0000000..7294a45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/push_front_rv.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// void push_front(value_type&& v);
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef MoveOnly T;
+        typedef std::forward_list<T> C;
+        C c;
+        c.push_front(1);
+        assert(c.front() == 1);
+        assert(std::distance(c.begin(), c.end()) == 1);
+        c.push_front(3);
+        assert(c.front() == 3);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+    }
+    {
+        typedef MoveOnly T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        c.push_front(1);
+        assert(c.front() == 1);
+        assert(std::distance(c.begin(), c.end()) == 1);
+        c.push_front(3);
+        assert(c.front() == 3);
+        assert(*std::next(c.begin()) == 1);
+        assert(std::distance(c.begin(), c.end()) == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/resize_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/resize_size.pass.cpp
new file mode 100644
index 0000000..606440c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/resize_size.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void resize(size_type n);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef DefaultOnly T;
+        typedef std::forward_list<T> C;
+        C c;
+        c.resize(0);
+        assert(std::distance(c.begin(), c.end()) == 0);
+        c.resize(10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+        c.resize(20);
+        assert(std::distance(c.begin(), c.end()) == 20);
+        c.resize(5);
+        assert(std::distance(c.begin(), c.end()) == 5);
+        c.resize(0);
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        c.resize(3);
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        c.resize(6);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 0);
+        assert(*std::next(c.begin(), 4) == 0);
+        assert(*std::next(c.begin(), 5) == 0);
+
+        c.resize(6);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 0);
+        assert(*std::next(c.begin(), 4) == 0);
+        assert(*std::next(c.begin(), 5) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef DefaultOnly T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c;
+        c.resize(0);
+        assert(std::distance(c.begin(), c.end()) == 0);
+        c.resize(10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+        c.resize(20);
+        assert(std::distance(c.begin(), c.end()) == 20);
+        c.resize(5);
+        assert(std::distance(c.begin(), c.end()) == 5);
+        c.resize(0);
+        assert(std::distance(c.begin(), c.end()) == 0);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        c.resize(3);
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        c.resize(6);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 0);
+        assert(*std::next(c.begin(), 4) == 0);
+        assert(*std::next(c.begin(), 5) == 0);
+
+        c.resize(6);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 0);
+        assert(*std::next(c.begin(), 4) == 0);
+        assert(*std::next(c.begin(), 5) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/resize_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/resize_size_value.pass.cpp
new file mode 100644
index 0000000..3c0b64e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.modifiers/resize_size_value.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void resize(size_type n, const value_type& v);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+#include "container_test_types.h"
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        c.resize(3, 10);
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        c.resize(6, 10);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 10);
+        assert(*std::next(c.begin(), 4) == 10);
+        assert(*std::next(c.begin(), 5) == 10);
+
+        c.resize(6, 12);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 10);
+        assert(*std::next(c.begin(), 4) == 10);
+        assert(*std::next(c.begin(), 5) == 10);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4};
+        C c(std::begin(t), std::end(t));
+
+        c.resize(3, 10);
+        assert(std::distance(c.begin(), c.end()) == 3);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+
+        c.resize(6, 10);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 10);
+        assert(*std::next(c.begin(), 4) == 10);
+        assert(*std::next(c.begin(), 5) == 10);
+
+        c.resize(6, 12);
+        assert(std::distance(c.begin(), c.end()) == 6);
+        assert(*std::next(c.begin(), 0) == 0);
+        assert(*std::next(c.begin(), 1) == 1);
+        assert(*std::next(c.begin(), 2) == 2);
+        assert(*std::next(c.begin(), 3) == 10);
+        assert(*std::next(c.begin(), 4) == 10);
+        assert(*std::next(c.begin(), 5) == 10);
+    }
+    {
+        // Test that the allocator's construct method is being used to
+        // construct the new elements and that it's called exactly N times.
+        typedef std::forward_list<int, ContainerTestAllocator<int, int>> Container;
+        ConstructController* cc = getConstructController();
+        cc->reset();
+        {
+            Container c;
+            cc->expect<int const&>(6);
+            c.resize(6, 42);
+            assert(!cc->unchecked());
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..9542a7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class Compare> void merge(forward_list& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <forward_list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::forward_list<operator_hijacker> lo;
+  std::forward_list<operator_hijacker> l;
+  lo.merge(l);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue.pass.cpp
new file mode 100644
index 0000000..cb30b03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void merge(forward_list& x);
+
+#include <forward_list>
+#include <iterator>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+#  include <functional>
+#endif
+
+/// Helper struct to test a stable sort.
+///
+/// relation comparison uses a.
+/// equality comparison uses a and b.
+struct value {
+  int a;
+  int b;
+
+  friend bool operator<(const value& lhs, const value& rhs) { return lhs.a < rhs.a; }
+  friend bool operator==(const value& lhs, const value& rhs) { return lhs.a == rhs.a && lhs.b == rhs.b; }
+};
+
+int main(int, char**) {
+  { // Basic merge operation.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {3, 5, 6, 7, 12, 13};
+    const T t2[] = {0, 1, 2, 4, 8, 9, 10, 11, 14, 15};
+    const T t3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(c2);
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+  { // Pointers, references, and iterators should remain valid after merging.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    typedef T* P;
+    typedef typename C::iterator I;
+    const T to[3] = {0, 1, 2};
+
+    C c2(std::begin(to), std::end(to));
+    I io[3] = {c2.begin(), ++c2.begin(), ++ ++c2.begin()};
+#if TEST_STD_VER >= 11
+    std::reference_wrapper<T> ro[3] = {*io[0], *io[1], *io[2]};
+#endif
+    P po[3] = {&*io[0], &*io[1], &*io[2]};
+
+    C c1;
+    c1.merge(c2);
+    assert(c2.empty());
+
+    for (size_t i = 0; i < 3; ++i) {
+      assert(to[i] == *io[i]);
+#if TEST_STD_VER >= 11
+      assert(to[i] == ro[i].get());
+#endif
+      assert(to[i] == *po[i]);
+    }
+  }
+  { // Sorting is stable.
+    typedef value T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {{0, 0}, {2, 0}, {3, 0}};
+    const T t2[] = {{0, 1}, {1, 1}, {2, 1}, {4, 1}};
+    const T t3[] = {{0, 0}, {0, 1}, {1, 1}, {2, 0}, {2, 1}, {3, 0}, {4, 1}};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(c2);
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+#if TEST_STD_VER >= 11
+  { // Test with a different allocator.
+    typedef int T;
+    typedef std::forward_list<T, min_allocator<T>> C;
+    const T t1[] = {3, 5, 6, 7, 12, 13};
+    const T t2[] = {0, 1, 2, 4, 8, 9, 10, 11, 14, 15};
+    const T t3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(c2);
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue_pred.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue_pred.addressof.compile.pass.cpp
new file mode 100644
index 0000000..012bbce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue_pred.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class Compare> void merge(forward_list& x, Compare comp);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <forward_list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::forward_list<operator_hijacker> lo;
+  std::forward_list<operator_hijacker> l;
+  lo.merge(l, std::less<operator_hijacker>());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue_pred.pass.cpp
new file mode 100644
index 0000000..d8df4eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_lvalue_pred.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class Compare> void merge(forward_list& x, Compare comp);
+
+#include <forward_list>
+#include <iterator>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+#  include <functional>
+#endif
+
+/// Helper for testing a stable sort.
+///
+/// The relation operator uses \ref a.
+/// The equality operator uses \ref a and \ref b.
+struct value {
+  int a;
+  int b;
+
+  friend bool operator>(const value& lhs, const value& rhs) { return lhs.a > rhs.a; }
+  friend bool operator==(const value& lhs, const value& rhs) { return lhs.a == rhs.a && lhs.b == rhs.b; }
+};
+
+int main(int, char**) {
+  { // Basic merge operation.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {13, 12, 7, 6, 5, 3};
+    const T t2[] = {15, 14, 11, 10, 9, 8, 4, 2, 1, 0};
+    const T t3[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(c2, std::greater<T>());
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+  { // Pointers, references, and iterators should remain valid after merging.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    typedef T* P;
+    typedef typename C::iterator I;
+    const T to[3] = {2, 1, 0};
+
+    C c2(std::begin(to), std::end(to));
+    I io[3] = {c2.begin(), ++c2.begin(), ++ ++c2.begin()};
+#if TEST_STD_VER >= 11
+    std::reference_wrapper<T> ro[3] = {*io[0], *io[1], *io[2]};
+#endif
+    P po[3] = {&*io[0], &*io[1], &*io[2]};
+
+    C c1;
+    c1.merge(c2, std::greater<T>());
+    assert(c2.empty());
+
+    for (size_t i = 0; i < 3; ++i) {
+      assert(to[i] == *io[i]);
+#if TEST_STD_VER >= 11
+      assert(to[i] == ro[i].get());
+#endif
+      assert(to[i] == *po[i]);
+    }
+  }
+  { // Sorting is stable.
+    typedef value T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {{3, 0}, {2, 0}, {0, 0}};
+    const T t2[] = {{4, 1}, {2, 1}, {1, 1}, {0, 1}};
+    const T t3[] = {{4, 1}, {3, 0}, {2, 0}, {2, 1}, {1, 1}, {0, 0}, {0, 1}};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(c2, std::greater<T>());
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+
+#if TEST_STD_VER >= 11
+  { // Test with a different allocator.
+    typedef int T;
+    typedef std::forward_list<T, min_allocator<T>> C;
+    const T t1[] = {13, 12, 7, 6, 5, 3};
+    const T t2[] = {15, 14, 11, 10, 9, 8, 4, 2, 1, 0};
+    const T t3[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(c2, std::greater<T>());
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..9955bed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue.addressof.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// template <class Compare> void merge(forward_list&& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <forward_list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::forward_list<operator_hijacker> lo;
+  std::forward_list<operator_hijacker> l;
+  lo.merge(std::move(l));
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue.pass.cpp
new file mode 100644
index 0000000..f6db686
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// void merge(forward_list&& x);
+
+#include <forward_list>
+#include <functional>
+#include <iterator>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+/// Helper for testing a stable sort.
+///
+/// The relation operator uses \ref a.
+/// The equality operator uses \ref a and \ref b.
+struct value {
+  int a;
+  int b;
+
+  friend bool operator<(const value& lhs, const value& rhs) { return lhs.a < rhs.a; }
+  friend bool operator==(const value& lhs, const value& rhs) { return lhs.a == rhs.a && lhs.b == rhs.b; }
+};
+
+int main(int, char**) {
+  { // Basic merge operation.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {3, 5, 6, 7, 12, 13};
+    const T t2[] = {0, 1, 2, 4, 8, 9, 10, 11, 14, 15};
+    const T t3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(std::move(c2));
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+  { // Pointers, references, and iterators should remain valid after merging.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    typedef T* P;
+    typedef typename C::iterator I;
+    const T to[3] = {0, 1, 2};
+
+    C c2(std::begin(to), std::end(to));
+    I io[3] = {c2.begin(), ++c2.begin(), ++ ++c2.begin()};
+    std::reference_wrapper<T> ro[3] = {*io[0], *io[1], *io[2]};
+    P po[3] = {&*io[0], &*io[1], &*io[2]};
+
+    C c1;
+    c1.merge(std::move(c2));
+    assert(c2.empty());
+
+    for (size_t i = 0; i < 3; ++i) {
+      assert(to[i] == *io[i]);
+      assert(to[i] == ro[i].get());
+      assert(to[i] == *po[i]);
+    }
+  }
+  { // Sorting is stable.
+    typedef value T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {{0, 0}, {2, 0}, {3, 0}};
+    const T t2[] = {{0, 1}, {1, 1}, {2, 1}, {4, 1}};
+    const T t3[] = {{0, 0}, {0, 1}, {1, 1}, {2, 0}, {2, 1}, {3, 0}, {4, 1}};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(std::move(c2));
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+  { // Test with a different allocator.
+    typedef int T;
+    typedef std::forward_list<T, min_allocator<T>> C;
+    const T t1[] = {3, 5, 6, 7, 12, 13};
+    const T t2[] = {0, 1, 2, 4, 8, 9, 10, 11, 14, 15};
+    const T t3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(std::move(c2));
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue_pred.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue_pred.addressof.compile.pass.cpp
new file mode 100644
index 0000000..6a33cf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue_pred.addressof.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// template <class Compare> void merge(forward_list&& x, Compare comp);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <forward_list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::forward_list<operator_hijacker> lo;
+  std::forward_list<operator_hijacker> l;
+  lo.merge(std::move(l), std::less<operator_hijacker>());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue_pred.pass.cpp
new file mode 100644
index 0000000..1b45946
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/merge_rvalue_pred.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// template <class Compare> void merge(forward_list&& x, Compare comp);
+
+#include <forward_list>
+#include <functional>
+#include <iterator>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+/// Helper for testing a stable sort.
+///
+/// The relation operator uses \ref a.
+/// The equality operator uses \ref a and \ref b.
+struct value {
+  int a;
+  int b;
+
+  friend bool operator>(const value& lhs, const value& rhs) { return lhs.a > rhs.a; }
+  friend bool operator==(const value& lhs, const value& rhs) { return lhs.a == rhs.a && lhs.b == rhs.b; }
+};
+
+int main(int, char**) {
+  { // Basic merge operation.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {13, 12, 7, 6, 5, 3};
+    const T t2[] = {15, 14, 11, 10, 9, 8, 4, 2, 1, 0};
+    const T t3[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(std::move(c2), std::greater<T>());
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+  { // Pointers, references, and iterators should remain valid after merging.
+    typedef int T;
+    typedef std::forward_list<T> C;
+    typedef T* P;
+    typedef typename C::iterator I;
+    const T to[3] = {2, 1, 0};
+
+    C c2(std::begin(to), std::end(to));
+    I io[3] = {c2.begin(), ++c2.begin(), ++ ++c2.begin()};
+    std::reference_wrapper<T> ro[3] = {*io[0], *io[1], *io[2]};
+    P po[3] = {&*io[0], &*io[1], &*io[2]};
+
+    C c1;
+    c1.merge(std::move(c2), std::greater<T>());
+    assert(c2.empty());
+
+    for (size_t i = 0; i < 3; ++i) {
+      assert(to[i] == *io[i]);
+      assert(to[i] == ro[i].get());
+      assert(to[i] == *po[i]);
+    }
+  }
+  { // Sorting is stable.
+    typedef value T;
+    typedef std::forward_list<T> C;
+    const T t1[] = {{3, 0}, {2, 0}, {0, 0}};
+    const T t2[] = {{4, 1}, {2, 1}, {1, 1}, {0, 1}};
+    const T t3[] = {{4, 1}, {3, 0}, {2, 0}, {2, 1}, {1, 1}, {0, 0}, {0, 1}};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(std::move(c2), std::greater<T>());
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+
+  { // Test with a different allocator.
+    typedef int T;
+    typedef std::forward_list<T, min_allocator<T>> C;
+    const T t1[] = {13, 12, 7, 6, 5, 3};
+    const T t2[] = {15, 14, 11, 10, 9, 8, 4, 2, 1, 0};
+    const T t3[] = {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    c1.merge(std::move(c2), std::greater<T>());
+    assert(c2.empty());
+
+    C c3(std::begin(t3), std::end(t3));
+    assert(c1 == c3);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/remove.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/remove.pass.cpp
new file mode 100644
index 0000000..c475468
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/remove.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void remove(const value_type& v);      // C++17 and before
+// size_type remove(const value_type& v); // C++20 and after
+
+#include <forward_list>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class L>
+void do_remove(L &l, const typename L::value_type &value, typename L::size_type expected)
+{
+    typename L::size_type old_size = std::distance(l.begin(), l.end());
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(decltype(l.remove(value)), typename L::size_type);
+    assert(l.remove(value) == expected);
+#else
+    ASSERT_SAME_TYPE(decltype(l.remove(value)), void);
+    l.remove(value);
+#endif
+    assert(old_size - std::distance(l.begin(), l.end()) == expected);
+}
+
+
+struct S {
+    S(int i) : i_(new int(i)) {}
+    S(const S &rhs) : i_(new int(*rhs.i_)) {}
+    S& operator = (const S &rhs) { *i_ = *rhs.i_; return *this; }
+    ~S () { delete i_; i_ = NULL; }
+    bool operator == (const S &rhs) const { return *i_ == *rhs.i_; }
+    int get () const { return *i_; }
+    int *i_;
+    };
+
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_remove(c1, 0, 4);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 0, 0, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2;
+        do_remove(c1, 0, 4);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_remove(c1, 0, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c1;
+        C c2;
+        do_remove(c1, 0, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_remove(c1, 0, 1);
+        assert(c1 == c2);
+    }
+    {  // LWG issue #526
+    typedef int T;
+    typedef std::forward_list<T> C;
+    int t1[] = {1, 2, 1, 3, 5, 8, 11};
+    int t2[] = {   2,    3, 5, 8, 11};
+    C c1(std::begin(t1), std::end(t1));
+    C c2(std::begin(t2), std::end(t2));
+    do_remove(c1, c1.front(), 2);
+    assert(c1 == c2);
+    }
+    {
+    typedef S T;
+    typedef std::forward_list<T> C;
+    int t1[] = {1, 2, 1, 3, 5, 8, 11, 1};
+    int t2[] = {   2,    3, 5, 8, 11   };
+    C c;
+    for(int *ip = std::end(t1); ip != std::begin(t1);)
+        c.push_front(S(*--ip));
+    do_remove(c, c.front(), 3);
+    C::const_iterator it = c.begin();
+    for(int *ip = std::begin(t2); ip != std::end(t2); ++ip, ++it) {
+        assert ( it != c.end());
+        assert ( *ip == it->get());
+        }
+    assert ( it == c.end ());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_remove(c1, 0, 4);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 0, 0, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2;
+        do_remove(c1, 0, 4);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_remove(c1, 0, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c1;
+        C c2;
+        do_remove(c1, 0, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_remove(c1, 0, 1);
+        assert(c1 == c2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/remove_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/remove_if.pass.cpp
new file mode 100644
index 0000000..7142c8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/remove_if.pass.cpp
@@ -0,0 +1,198 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class Predicate> void      remove_if(Predicate pred); // C++17 and before
+// template <class Predicate> size_type remove_if(Predicate pred); // C++20 and after
+
+#include <forward_list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <functional>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "counting_predicates.h"
+
+
+template <class L, class Predicate>
+void do_remove_if(L &l, Predicate pred, typename L::size_type expected)
+{
+    typename L::size_type old_size = std::distance(l.begin(), l.end());
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(decltype(l.remove_if(pred)), typename L::size_type);
+    assert(l.remove_if(pred) == expected);
+#else
+    ASSERT_SAME_TYPE(decltype(l.remove_if(pred)), void);
+    l.remove_if(pred);
+#endif
+    assert(old_size - std::distance(l.begin(), l.end()) == expected);
+}
+
+bool g(int i)
+{
+    return i < 3;
+}
+
+struct PredLWG526 {
+    PredLWG526 (int i) : i_(i) {};
+    ~PredLWG526() { i_ = -32767; }
+    bool operator() (const PredLWG526 &p) const { return p.i_ == i_; }
+
+    bool operator==(int i) const { return i == i_;}
+    int i_;
+};
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 4);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 0, 0, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2;
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 4);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 0);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T> C;
+        C c1;
+        C c2;
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 0);
+        assert(c1 == c2);
+        assert(cp.count() == 0);
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 1);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+
+    { // LWG issue #526
+    int a1[] = {1, 2, 1, 3, 5, 8, 11};
+    int a2[] = {   2,    3, 5, 8, 11};
+    std::forward_list<PredLWG526> c(a1, a1 + 7);
+    do_remove_if(c, std::ref(c.front()), 2);
+    for (size_t i = 0; i < 5; ++i)
+    {
+        assert(!c.empty());
+        assert(c.front() == a2[i]);
+        c.pop_front();
+    }
+    assert(c.empty());
+    }
+
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 4);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 0, 0, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2;
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 4);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 0);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c1;
+        C c2;
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 0);
+        assert(c1 == c2);
+        assert(cp.count() == 0);
+    }
+    {
+        typedef int T;
+        typedef unary_counting_predicate<bool(*)(T), T> Predicate;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 5, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        Predicate cp(g);
+        do_remove_if(c1, std::ref(cp), 1);
+        assert(c1 == c2);
+        assert(cp.count() == static_cast<std::size_t>(std::distance(std::begin(t1), std::end(t1))));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/reverse.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/reverse.pass.cpp
new file mode 100644
index 0000000..c337d13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/reverse.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void reverse();
+
+#include <forward_list>
+#include <iterator>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(int N)
+{
+    C c;
+    for (int i = 0; i < N; ++i)
+        c.push_front(i);
+    c.reverse();
+    assert(std::distance(c.begin(), c.end()) == N);
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(*j == i);
+}
+
+int main(int, char**)
+{
+    for (int i = 0; i < 10; ++i)
+        test<std::forward_list<int> >(i);
+#if TEST_STD_VER >= 11
+    for (int i = 0; i < 10; ++i)
+        test<std::forward_list<int, min_allocator<int>> >(i);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/sort.pass.cpp
new file mode 100644
index 0000000..4789e73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/sort.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void sort();
+
+#include <forward_list>
+#include <iterator>
+#include <algorithm>
+#include <vector>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+std::mt19937 randomness;
+
+template <class C>
+void test(int N)
+{
+    typedef typename C::value_type T;
+    typedef std::vector<T> V;
+    V v;
+    for (int i = 0; i < N; ++i)
+        v.push_back(i);
+    std::shuffle(v.begin(), v.end(), randomness);
+    C c(v.begin(), v.end());
+    c.sort();
+    assert(std::distance(c.begin(), c.end()) == N);
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(*j == i);
+}
+
+struct Payload
+{
+    int val;
+    int side;
+    Payload(int v) : val(v), side(0) {}
+    Payload(int v, int s) : val(v), side(s) {}
+    bool operator< (const Payload &rhs) const { return val <  rhs.val;}
+//     bool operator==(const Payload &rhs) const { return val == rhs.val;}
+};
+
+void test_stable(int N)
+{
+    typedef Payload T;
+    typedef std::forward_list<T> C;
+    typedef std::vector<T> V;
+    V v;
+    for (int i = 0; i < N; ++i)
+        v.push_back(Payload(i/2));
+    std::shuffle(v.begin(), v.end(), randomness);
+    for (int i = 0; i < N; ++i)
+        v[i].side = i;
+
+    C c(v.begin(), v.end());
+    c.sort();
+    assert(std::distance(c.begin(), c.end()) == N);
+
+//  Are we sorted?
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(j->val == i/2);
+
+//  Are we stable?
+    for (C::const_iterator it = c.begin(); it != c.end(); ++it)
+    {
+        C::const_iterator next = std::next(it);
+        if (next != c.end() && it->val == next->val)
+            assert(it->side < next->side);
+    }
+}
+
+int main(int, char**)
+{
+    for (int i = 0; i < 40; ++i)
+        test<std::forward_list<int> >(i);
+#if TEST_STD_VER >= 11
+    for (int i = 0; i < 40; ++i)
+        test<std::forward_list<int, min_allocator<int>> >(i);
+#endif
+
+    for (int i = 0; i < 40; ++i)
+        test_stable(i);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/sort_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/sort_pred.pass.cpp
new file mode 100644
index 0000000..6db1599
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/sort_pred.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class Compare> void sort(Compare comp);
+
+#include <forward_list>
+#include <iterator>
+#include <algorithm>
+#include <vector>
+#include <functional>
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+std::mt19937 randomness;
+
+struct Payload
+{
+    int val;
+    int side;
+    Payload(int v) : val(v), side(0) {}
+    Payload(int v, int s) : val(v), side(s) {}
+    bool operator< (const Payload &rhs) const { return val <  rhs.val;}
+};
+
+bool greater(const Payload &lhs, const Payload &rhs) { return lhs.val >  rhs.val; }
+
+void test_stable(int N)
+{
+    typedef Payload T;
+    typedef std::forward_list<T> C;
+    typedef std::vector<T> V;
+    V v;
+    for (int i = 0; i < N; ++i)
+        v.push_back(Payload(i/2));
+    std::shuffle(v.begin(), v.end(), randomness);
+    for (int i = 0; i < N; ++i)
+        v[i].side = i;
+
+    C c(v.begin(), v.end());
+    c.sort(greater);
+    assert(std::distance(c.begin(), c.end()) == N);
+
+//  Are we sorted?
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(j->val == (N-1-i)/2);
+
+//  Are we stable?
+    for (C::const_iterator it = c.begin(); it != c.end(); ++it)
+    {
+        C::const_iterator next = std::next(it);
+        if (next != c.end() && it->val == next->val)
+            assert(it->side < next->side);
+    }
+}
+
+template <class C>
+void test(int N)
+{
+    typedef typename C::value_type T;
+    typedef std::vector<T> V;
+    V v;
+    for (int i = 0; i < N; ++i)
+        v.push_back(i);
+    std::shuffle(v.begin(), v.end(), randomness);
+    C c(v.begin(), v.end());
+    c.sort(std::greater<T>());
+    assert(std::distance(c.begin(), c.end()) == N);
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(*j == N-1-i);
+}
+
+int main(int, char**)
+{
+    for (int i = 0; i < 40; ++i)
+        test<std::forward_list<int> >(i);
+#if TEST_STD_VER >= 11
+    for (int i = 0; i < 40; ++i)
+        test<std::forward_list<int, min_allocator<int>> >(i);
+#endif
+
+    for (int i = 0; i < 40; ++i)
+        test_stable(i);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_flist.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_flist.pass.cpp
new file mode 100644
index 0000000..d5d95b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_flist.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void splice_after(const_iterator p, forward_list&& x);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+typedef int T;
+const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7};
+const T t2[] = {10, 11, 12, 13, 14, 15};
+const std::ptrdiff_t size_t1 = std::end(t1) - std::begin(t1);
+const std::ptrdiff_t size_t2 = std::end(t2) - std::begin(t2);
+
+template <class C>
+void
+testd(const C& c, int p, int l)
+{
+    typename C::const_iterator i = c.begin();
+    int n1 = 0;
+    for (; n1 < p; ++n1, ++i)
+        assert(*i == t1[n1]);
+    for (int n2 = 0; n2 < l; ++n2, ++i)
+        assert(*i == t2[n2]);
+    for (; n1 < size_t1; ++n1, ++i)
+        assert(*i == t1[n1]);
+    assert(std::distance(c.begin(), c.end()) == size_t1 + l);
+}
+
+int main(int, char**)
+{
+    {
+    // splicing different containers
+    typedef std::forward_list<T> C;
+    for (int l = 0; l <= size_t2; ++l)
+    {
+        for (int p = 0; p <= size_t1; ++p)
+        {
+            C c1(std::begin(t1), std::end(t1));
+            C c2(t2, t2+l);
+
+            c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c2));
+            testd(c1, p, l);
+        }
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    // splicing different containers
+    typedef std::forward_list<T, min_allocator<T>> C;
+    for (int l = 0; l <= size_t2; ++l)
+    {
+        for (int p = 0; p <= size_t1; ++p)
+        {
+            C c1(std::begin(t1), std::end(t1));
+            C c2(t2, t2+l);
+
+            c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c2));
+            testd(c1, p, l);
+        }
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_one.pass.cpp
new file mode 100644
index 0000000..f54ff2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_one.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void splice_after(const_iterator p, forward_list&& x, const_iterator i);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+typedef int T;
+const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7};
+const T t2[] = {10, 11, 12};
+const std::ptrdiff_t size_t1 = std::end(t1) - std::begin(t1);
+const std::ptrdiff_t size_t2 = std::end(t2) - std::begin(t2);
+
+template <class C>
+void
+testd(const C& c, int p, int f)
+{
+    typename C::const_iterator i = c.begin();
+    int n1 = 0;
+    for (; n1 < p; ++n1, ++i)
+        assert(*i == t1[n1]);
+    for (int n2 = f; n2 < f+1; ++n2, ++i)
+        assert(*i == t2[n2]);
+    for (; n1 < size_t1; ++n1, ++i)
+        assert(*i == t1[n1]);
+    assert(std::distance(c.begin(), c.end()) == size_t1 + 1);
+}
+
+template <class C>
+void
+tests(const C& c, int p, int f)
+{
+    typename C::const_iterator i = c.begin();
+    int n = 0;
+    if (p == f || p == f+1)
+    {
+        for (n = 0; n < size_t1; ++n, ++i)
+            assert(*i == t1[n]);
+    }
+    else if (p < f)
+    {
+        for (n = 0; n < p; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = f; n < f+1; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = p; n < f; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = f+1; n < size_t1; ++n, ++i)
+            assert(*i == t1[n]);
+    }
+    else // p > f+1
+    {
+        for (n = 0; n < f; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = f+1; n < p; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = f; n < f+1; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = p; n < size_t1; ++n, ++i)
+            assert(*i == t1[n]);
+    }
+    assert(std::distance(c.begin(), c.end()) == size_t1);
+}
+
+int main(int, char**)
+{
+    {
+    // splicing different containers
+    typedef std::forward_list<T> C;
+    for (int f = 0; f <= size_t2-1; ++f)
+    {
+        for (int p = 0; p <= size_t1; ++p)
+        {
+            C c1(std::begin(t1), std::end(t1));
+            C c2(std::begin(t2), std::end(t2));
+
+            c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c2),
+                  std::next(c2.cbefore_begin(), f));
+            testd(c1, p, f);
+        }
+    }
+
+    // splicing within same container
+    for (int f = 0; f <= size_t1-1; ++f)
+    {
+        for (int p = 0; p <= size_t1; ++p)
+        {
+            C c1(std::begin(t1), std::end(t1));
+
+            c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c1),
+                  std::next(c1.cbefore_begin(), f));
+            tests(c1, p, f);
+        }
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    // splicing different containers
+    typedef std::forward_list<T, min_allocator<T>> C;
+    for (int f = 0; f <= size_t2-1; ++f)
+    {
+        for (int p = 0; p <= size_t1; ++p)
+        {
+            C c1(std::begin(t1), std::end(t1));
+            C c2(std::begin(t2), std::end(t2));
+
+            c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c2),
+                  std::next(c2.cbefore_begin(), f));
+            testd(c1, p, f);
+        }
+    }
+
+    // splicing within same container
+    for (int f = 0; f <= size_t1-1; ++f)
+    {
+        for (int p = 0; p <= size_t1; ++p)
+        {
+            C c1(std::begin(t1), std::end(t1));
+
+            c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c1),
+                  std::next(c1.cbefore_begin(), f));
+            tests(c1, p, f);
+        }
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_range.pass.cpp
new file mode 100644
index 0000000..527c72c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/splice_after_range.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void splice_after(const_iterator p, forward_list&& x,
+//                   const_iterator first, const_iterator last);
+
+#include <stddef.h>
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+typedef ptrdiff_t T;
+const T t1[] = {0, 1, 2, 3, 4, 5, 6, 7};
+const T t2[] = {10, 11, 12, 13, 14, 15};
+const ptrdiff_t size_t1 = std::end(t1) - std::begin(t1);
+const ptrdiff_t size_t2 = std::end(t2) - std::begin(t2);
+
+template <class C>
+void
+testd(const C& c, ptrdiff_t p, ptrdiff_t f, ptrdiff_t l)
+{
+    typename C::const_iterator i = c.begin();
+    ptrdiff_t n1 = 0;
+    for (; n1 < p; ++n1, ++i)
+        assert(*i == t1[n1]);
+    for (ptrdiff_t n2 = f; n2 < l-1; ++n2, ++i)
+        assert(*i == t2[n2]);
+    for (; n1 < size_t1; ++n1, ++i)
+        assert(*i == t1[n1]);
+    assert(std::distance(c.begin(), c.end()) == size_t1 + (l > f+1 ? l-1-f : 0));
+}
+
+template <class C>
+void
+tests(const C& c, ptrdiff_t p, ptrdiff_t f, ptrdiff_t l)
+{
+    typename C::const_iterator i = c.begin();
+    ptrdiff_t n = 0;
+    ptrdiff_t d = l > f+1 ? l-1-f : 0;
+    if (d == 0 || p == f)
+    {
+        for (n = 0; n < size_t1; ++n, ++i)
+            assert(*i == t1[n]);
+    }
+    else if (p < f)
+    {
+        for (n = 0; n < p; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = f; n < l-1; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = p; n < f; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = l-1; n < size_t1; ++n, ++i)
+            assert(*i == t1[n]);
+    }
+    else // p > f
+    {
+        for (n = 0; n < f; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = l-1; n < p; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = f; n < l-1; ++n, ++i)
+            assert(*i == t1[n]);
+        for (n = p; n < size_t1; ++n, ++i)
+            assert(*i == t1[n]);
+    }
+    assert(std::distance(c.begin(), c.end()) == size_t1);
+}
+
+int main(int, char**)
+{
+    {
+    // splicing different containers
+    typedef std::forward_list<T> C;
+    for (ptrdiff_t f = 0; f <= size_t2+1; ++f)
+    {
+        for (ptrdiff_t l = f; l <= size_t2+1; ++l)
+        {
+            for (ptrdiff_t p = 0; p <= size_t1; ++p)
+            {
+                C c1(std::begin(t1), std::end(t1));
+                C c2(std::begin(t2), std::end(t2));
+
+                c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c2),
+                      std::next(c2.cbefore_begin(), f), std::next(c2.cbefore_begin(), l));
+                testd(c1, p, f, l);
+            }
+        }
+    }
+
+    // splicing within same container
+    for (ptrdiff_t f = 0; f <= size_t1+1; ++f)
+    {
+        for (ptrdiff_t l = f; l <= size_t1; ++l)
+        {
+            for (ptrdiff_t p = 0; p <= f; ++p)
+            {
+                C c1(std::begin(t1), std::end(t1));
+
+                c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c1),
+                      std::next(c1.cbefore_begin(), f), std::next(c1.cbefore_begin(), l));
+                tests(c1, p, f, l);
+            }
+            for (ptrdiff_t p = l; p <= size_t1; ++p)
+            {
+                C c1(std::begin(t1), std::end(t1));
+
+                c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c1),
+                      std::next(c1.cbefore_begin(), f), std::next(c1.cbefore_begin(), l));
+                tests(c1, p, f, l);
+            }
+        }
+    }
+    }
+#if TEST_STD_VER >= 11
+    {
+    // splicing different containers
+    typedef std::forward_list<T, min_allocator<T>> C;
+    for (ptrdiff_t f = 0; f <= size_t2+1; ++f)
+    {
+        for (ptrdiff_t l = f; l <= size_t2+1; ++l)
+        {
+            for (ptrdiff_t p = 0; p <= size_t1; ++p)
+            {
+                C c1(std::begin(t1), std::end(t1));
+                C c2(std::begin(t2), std::end(t2));
+
+                c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c2),
+                      std::next(c2.cbefore_begin(), f), std::next(c2.cbefore_begin(), l));
+                testd(c1, p, f, l);
+            }
+        }
+    }
+
+    // splicing within same container
+    for (ptrdiff_t f = 0; f <= size_t1+1; ++f)
+    {
+        for (ptrdiff_t l = f; l <= size_t1; ++l)
+        {
+            for (ptrdiff_t p = 0; p <= f; ++p)
+            {
+                C c1(std::begin(t1), std::end(t1));
+
+                c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c1),
+                      std::next(c1.cbefore_begin(), f), std::next(c1.cbefore_begin(), l));
+                tests(c1, p, f, l);
+            }
+            for (ptrdiff_t p = l; p <= size_t1; ++p)
+            {
+                C c1(std::begin(t1), std::end(t1));
+
+                c1.splice_after(std::next(c1.cbefore_begin(), p), std::move(c1),
+                      std::next(c1.cbefore_begin(), f), std::next(c1.cbefore_begin(), l));
+                tests(c1, p, f, l);
+            }
+        }
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/unique.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/unique.pass.cpp
new file mode 100644
index 0000000..793fcf3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/unique.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void unique();      // C++17 and before
+// size_type unique(); // C++20 and after
+
+#include <forward_list>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class L>
+void do_unique(L &l, typename L::size_type expected)
+{
+    typename L::size_type old_size = std::distance(l.begin(), l.end());
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(decltype(l.unique()), typename L::size_type);
+    assert(l.unique() == expected);
+#else
+    ASSERT_SAME_TYPE(decltype(l.unique()), void);
+    l.unique();
+#endif
+    assert(old_size - std::distance(l.begin(), l.end()) == expected);
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {0, 5, 0, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 0, 0, 0};
+        const T t2[] = {0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 2);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c1;
+        C c2;
+        do_unique(c1, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 2);
+        assert(c1 == c2);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {0, 5, 0, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 0, 0, 0};
+        const T t2[] = {0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 2);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c1;
+        C c2;
+        do_unique(c1, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, 2);
+        assert(c1 == c2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/unique_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/unique_pred.pass.cpp
new file mode 100644
index 0000000..bfadd6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.ops/unique_pred.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class BinaryPredicate> void unique(BinaryPredicate binary_pred);      // C++17 and before
+// template <class BinaryPredicate> size_type unique(BinaryPredicate binary_pred); // C++20 and after
+
+#include <cassert>
+#include <forward_list>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class L, class Predicate>
+void do_unique(L &l, Predicate pred, typename L::size_type expected)
+{
+    typename L::size_type old_size = std::distance(l.begin(), l.end());
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(decltype(l.unique(pred)), typename L::size_type);
+    assert(l.unique(pred) == expected);
+#else
+    ASSERT_SAME_TYPE(decltype(l.unique(pred)), void);
+    l.unique(pred);
+#endif
+    assert(old_size - std::distance(l.begin(), l.end()) == expected);
+}
+
+
+struct PredLWG526 {
+    PredLWG526 (int i) : i_(i) {};
+    ~PredLWG526() { i_ = -32767; }
+    bool operator() (const PredLWG526 &lhs, const PredLWG526 &rhs) const { return lhs.i_ == rhs.i_; }
+
+    bool operator==(int i) const { return i == i_;}
+    int i_;
+};
+
+
+bool g(int x, int y)
+{
+    return x == y;
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {0, 5, 0, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {0, 0, 0, 0};
+        const T t2[] = {0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 2);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        C c1;
+        C c2;
+        do_unique(c1, g, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 2);
+        assert(c1 == c2);
+    }
+
+    { // LWG issue #526
+    int a1[] = {1, 1, 1, 2, 3, 5, 2, 11};
+    int a2[] = {1,       2, 3, 5, 2, 11};
+    std::forward_list<PredLWG526> c1(a1, a1 + 8);
+    do_unique(c1, std::ref(c1.front()), 2);
+    for (size_t i = 0; i < 6; ++i)
+    {
+        assert(!c1.empty());
+        assert(c1.front() == a2[i]);
+        c1.pop_front();
+    }
+    assert(c1.empty());
+    }
+
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 5, 5, 0, 0, 0, 5};
+        const T t2[] = {0, 5, 0, 5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {0, 0, 0, 0};
+        const T t2[] = {0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 3);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5};
+        const T t2[] = {5};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 2);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        C c1;
+        C c2;
+        do_unique(c1, g, 0);
+        assert(c1 == c2);
+    }
+    {
+        typedef int T;
+        typedef std::forward_list<T, min_allocator<T>> C;
+        const T t1[] = {5, 5, 5, 0};
+        const T t2[] = {5, 0};
+        C c1(std::begin(t1), std::end(t1));
+        C c2(std::begin(t2), std::end(t2));
+        do_unique(c1, g, 2);
+        assert(c1 == c2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/equal.pass.cpp
new file mode 100644
index 0000000..a727487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/equal.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class T, class Allocator>
+//     bool operator==(const forward_list<T, Allocator>& x,
+//                     const forward_list<T, Allocator>& y);
+//
+// template <class T, class Allocator>
+//     bool operator!=(const forward_list<T, Allocator>& x,
+//                     const forward_list<T, Allocator>& y);
+
+#include <forward_list>
+#include <iterator>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(int N, int M)
+{
+    C c1;
+    for (int i = 0; i < N; ++i)
+        c1.push_front(i);
+    C c2;
+    for (int i = 0; i < M; ++i)
+        c2.push_front(i);
+    if (N == M)
+        assert(c1 == c2);
+    else
+        assert(c1 != c2);
+    c2 = c1;
+    assert(c1 == c2);
+    if (N > 0)
+    {
+        c2.front() = N+1;
+        assert(c1 != c2);
+    }
+}
+
+int main(int, char**)
+{
+    for (int i = 0; i < 10; ++i)
+        for (int j = 0; j < 10; ++j)
+            test<std::forward_list<int> >(i, j);
+#if TEST_STD_VER >= 11
+    for (int i = 0; i < 10; ++i)
+        for (int j = 0; j < 10; ++j)
+            test<std::forward_list<int, min_allocator<int>> >(i, j);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/member_swap.pass.cpp
new file mode 100644
index 0000000..6b16d66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/member_swap.pass.cpp
@@ -0,0 +1,263 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// void swap(forward_list& x);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1, 1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(1, 2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1, 1));
+        C c2(A(1, 2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1, 1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(1, 2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1, 1));
+        C c2(A(1, 2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1));
+        C c2(A(2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1));
+        C c2(A(2));
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A(1));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A());
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A());
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A());
+        C c2(A{});
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A{});
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A());
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A{});
+        C c2(A{});
+        c1.swap(c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/non_member_swap.pass.cpp
new file mode 100644
index 0000000..e46a55c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/non_member_swap.pass.cpp
@@ -0,0 +1,264 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class T, class Allocator>
+//     void swap(forward_list<T, Allocator>& x, forward_list<T, Allocator>& y);
+
+#include <forward_list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1, 1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(1, 2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1, 1));
+        C c2(A(1, 2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1, 1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(1, 2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef int T;
+        typedef test_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1, 1));
+        C c2(A(1, 2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator().get_id() == 1);
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator().get_id() == 2);
+    }
+
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A(1));
+        C c2(A(2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1));
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A(2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        typedef int T;
+        typedef other_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A(1));
+        C c2(A(2));
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A(2));
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A(1));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A());
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A());
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        const T t1[] = {0, 1, 2, 3, 4, 5};
+        C c1(std::begin(t1), std::end(t1), A());
+        C c2(A{});
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 6);
+        assert(*std::next(c2.begin(), 0) == 0);
+        assert(*std::next(c2.begin(), 1) == 1);
+        assert(*std::next(c2.begin(), 2) == 2);
+        assert(*std::next(c2.begin(), 3) == 3);
+        assert(*std::next(c2.begin(), 4) == 4);
+        assert(*std::next(c2.begin(), 5) == 5);
+        assert(c2.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A{});
+        const T t2[] = {10, 11, 12};
+        C c2(std::begin(t2), std::end(t2), A());
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 3);
+        assert(*std::next(c1.begin(), 0) == 10);
+        assert(*std::next(c1.begin(), 1) == 11);
+        assert(*std::next(c1.begin(), 2) == 12);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A());
+    }
+    {
+        typedef int T;
+        typedef min_allocator<T> A;
+        typedef std::forward_list<T, A> C;
+        C c1(A{});
+        C c2(A{});
+        swap(c1, c2);
+
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c1.get_allocator() == A());
+
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(c2.get_allocator() == A());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/relational.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/relational.pass.cpp
new file mode 100644
index 0000000..29a180a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/relational.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class T, class Allocator>
+//     bool operator< (const forward_list<T, Allocator>& x,
+//                     const forward_list<T, Allocator>& y);
+//
+// template <class T, class Allocator>
+//     bool operator> (const forward_list<T, Allocator>& x,
+//                     const forward_list<T, Allocator>& y);
+//
+// template <class T, class Allocator>
+//     bool operator>=(const forward_list<T, Allocator>& x,
+//                     const forward_list<T, Allocator>& y);
+//
+// template <class T, class Allocator>
+//     bool operator<=(const forward_list<T, Allocator>& x,
+//                     const forward_list<T, Allocator>& y);
+
+#include <forward_list>
+#include <iterator>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(int N, int M)
+{
+    C c1;
+    for (int i = 0; i < N; ++i)
+        c1.push_front(i);
+    C c2;
+    for (int i = 0; i < M; ++i)
+        c2.push_front(i);
+    if (N < M)
+        assert(c1 < c2);
+    if (N <= M)
+        assert(c1 <= c2);
+    if (N >= M)
+        assert(c1 >= c2);
+    if (N > M)
+        assert(c1 > c2);
+}
+
+int main(int, char**)
+{
+    for (int i = 0; i < 10; ++i)
+        for (int j = 0; j < 10; ++j)
+            test<std::forward_list<int> >(i, j);
+#if TEST_STD_VER >= 11
+    for (int i = 0; i < 10; ++i)
+        for (int j = 0; j < 10; ++j)
+            test<std::forward_list<int, min_allocator<int>> >(i, j);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..e9450ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/forwardlist.spec/swap_noexcept.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <forward_list>
+
+// void swap(forward_list& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(is_always_equal<allocator_type>::value);
+
+// This tests a conforming extension
+
+#include <forward_list>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::forward_list<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::forward_list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::forward_list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::forward_list<MoveOnly, some_alloc<MoveOnly>> C;
+#if TEST_STD_VER >= 14
+    //  In C++14, if POCS is set, swapping the allocator is required not to throw
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#else
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif
+    }
+#if TEST_STD_VER >= 14
+    {
+        typedef std::forward_list<MoveOnly, some_alloc2<MoveOnly>> C;
+    //  if the allocators are always equal, then the swap can be noexcept
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/get_allocator.pass.cpp
new file mode 100644
index 0000000..9d88e7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/get_allocator.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// class forward_list
+
+// allocator_type get_allocator() const
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::forward_list<int> fl(alloc);
+        assert(fl.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::forward_list<int, other_allocator<int> > fl(alloc);
+        assert(fl.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/incomplete.pass.cpp
new file mode 100644
index 0000000..2bdfad7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/incomplete.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// forward_list()
+// forward_list::iterator()
+// forward_list::const_iterator()
+
+#include <forward_list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct A {
+  std::forward_list<A> d;
+  std::forward_list<A>::iterator it;
+  std::forward_list<A>::const_iterator it2;
+};
+
+#if TEST_STD_VER >= 11
+struct B {
+  typedef std::forward_list<B, min_allocator<B>> FList;
+  FList d;
+  FList::iterator it;
+  FList::const_iterator it2;
+};
+#endif
+
+int main(int, char**)
+{
+  {
+    A a;
+    assert(a.d.empty());
+    a.it = a.d.begin();
+    a.it2 = a.d.cbefore_begin();
+  }
+#if TEST_STD_VER >= 11
+  {
+    B b;
+    assert(b.d.empty());
+    b.it = b.d.begin();
+    b.it2 = b.d.cbefore_begin();
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/max_size.pass.cpp
new file mode 100644
index 0000000..08d21d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/max_size.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <forward_list>
+#include <limits>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+      typedef limited_allocator<int, 10> A;
+      typedef std::forward_list<int, A> C;
+      C c;
+      assert(c.max_size() <= 10);
+      LIBCPP_ASSERT(c.max_size() == 10);
+    }
+    {
+      typedef limited_allocator<int, (size_t)-1> A;
+      typedef std::forward_list<int, A> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::forward_list<char> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..f3e7fd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// forward_list
+
+#include <forward_list>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::forward_list<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::forward_range<range>);
+static_assert(!std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(!std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::forward_range<range const>);
+static_assert(!std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(!std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/types.pass.cpp
new file mode 100644
index 0000000..9867bf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/forwardlist/types.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <forward_list>
+
+// template <class T, class Allocator = allocator<T>>
+// class forward_list
+// {
+// public:
+//   typedef T         value_type;
+//   typedef Allocator allocator_type;
+//
+//   typedef value_type&                                                reference;
+//   typedef const value_type&                                          const_reference;
+//   typedef typename allocator_traits<allocator_type>::pointer         pointer;
+//   typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
+//   typedef typename allocator_traits<allocator_type>::size_type       size_type;
+//   typedef typename allocator_traits<allocator_type>::difference_type difference_type;
+//   ...
+// };
+
+#include <forward_list>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct A { std::forward_list<A> v; }; // incomplete type support
+
+int main(int, char**)
+{
+    {
+    typedef std::forward_list<char> C;
+    static_assert((std::is_same<C::value_type, char>::value), "");
+    static_assert((std::is_same<C::allocator_type, std::allocator<char> >::value), "");
+    static_assert((std::is_same<C::reference, char&>::value), "");
+    static_assert((std::is_same<C::const_reference, const char&>::value), "");
+    static_assert((std::is_same<C::pointer, char*>::value), "");
+    static_assert((std::is_same<C::const_pointer, const char*>::value), "");
+    static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::forward_list<char, min_allocator<char>> C;
+    static_assert((std::is_same<C::value_type, char>::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<char> >::value), "");
+    static_assert((std::is_same<C::reference, char&>::value), "");
+    static_assert((std::is_same<C::const_reference, const char&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<char>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const char>>::value), "");
+//  min_allocator doesn't have a size_type, so one gets synthesized
+    static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+    static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..39dcde4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+//   The container's value type must be the same as the allocator's value type
+
+#include <list>
+
+int main(int, char**)
+{
+    std::list<int, std::allocator<long> > l;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/compare.pass.cpp
new file mode 100644
index 0000000..1d6dd80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/compare.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template< class T, class Alloc >
+// bool operator==( const std::list<T,Alloc>& lhs,
+//                  const std::list<T,Alloc>& rhs );
+
+// template< class T, class Alloc >
+// bool operator!=( const std::list<T,Alloc>& lhs,
+//                  const std::list<T,Alloc>& rhs );
+
+// template< class T, class Alloc >
+// bool operator<( const std::list<T,Alloc>& lhs,
+//                 const std::list<T,Alloc>& rhs );
+
+// template< class T, class Alloc >
+// bool operator<=( const std::list<T,Alloc>& lhs,
+//                  const std::list<T,Alloc>& rhs );
+
+// template< class T, class Alloc >
+// bool operator>( const std::list<T,Alloc>& lhs,
+//                 const std::list<T,Alloc>& rhs );
+
+// template< class T, class Alloc >
+// bool operator>=( const std::list<T,Alloc>& lhs,
+//                  const std::list<T,Alloc>& rhs );
+
+#include <list>
+#include <cassert>
+
+#include "test_comparisons.h"
+
+int main(int, char**) {
+    {
+        const std::list<int> l1, l2;
+        assert(testComparisons(l1, l2, true, false));
+    }
+    {
+        const std::list<int> l1(1, 1), l2(1, 1);
+        assert(testComparisons(l1, l2, true, false));
+    }
+    {
+        int items[3] = {1, 2, 3};
+        const std::list<int> l1(items, items + 3);
+        const std::list<int> l2(items, items + 3);
+        assert(testComparisons(l1, l2, true, false));
+    }
+    {
+        const std::list<int> l1(1, 1), l2;
+        assert(testComparisons(l1, l2, false, false));
+    }
+    {
+        const std::list<int> l1(1, 1), l2(1, 2);
+        assert(testComparisons(l1, l2, false, true));
+    }
+    {
+        int items1[2] = {1, 2};
+        int items2[2] = {1, 3};
+        const std::list<int> l1(items1, items1 + 2);
+        const std::list<int> l2(items2, items2 + 2);
+        assert(testComparisons(l1, l2, false, true));
+    }
+    {
+        int items1[2] = {2, 2};
+        int items2[2] = {1, 3};
+        const std::list<int> l1(items1, items1 + 2);
+        const std::list<int> l2(items2, items2 + 2);
+        assert(testComparisons(l1, l2, false, false));
+    }
+    {
+        const std::list<LessAndEqComp> l1, l2;
+        assert(testComparisons(l1, l2, true, false));
+    }
+    {
+        const std::list<LessAndEqComp> l1(1, LessAndEqComp(1));
+        const std::list<LessAndEqComp> l2(1, LessAndEqComp(1));
+        assert(testComparisons(l1, l2, true, false));
+    }
+    {
+        LessAndEqComp items[3] = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(3)};
+        const std::list<LessAndEqComp> l1(items, items + 3);
+        const std::list<LessAndEqComp> l2(items, items + 3);
+        assert(testComparisons(l1, l2, true, false));
+    }
+    {
+        const std::list<LessAndEqComp> l1(1, LessAndEqComp(1));
+        const std::list<LessAndEqComp> l2;
+        assert(testComparisons(l1, l2, false, false));
+    }
+    {
+        const std::list<LessAndEqComp> l1(1, LessAndEqComp(1));
+        const std::list<LessAndEqComp> l2(1, LessAndEqComp(2));
+        assert(testComparisons(l1, l2, false, true));
+    }
+    {
+        LessAndEqComp items1[2] = {LessAndEqComp(1), LessAndEqComp(2)};
+        LessAndEqComp items2[2] = {LessAndEqComp(1), LessAndEqComp(3)};
+        const std::list<LessAndEqComp> l1(items1, items1 + 2);
+        const std::list<LessAndEqComp> l2(items2, items2 + 2);
+        assert(testComparisons(l1, l2, false, true));
+    }
+    {
+        LessAndEqComp items1[2] = {LessAndEqComp(2), LessAndEqComp(2)};
+        LessAndEqComp items2[2] = {LessAndEqComp(1), LessAndEqComp(3)};
+        const std::list<LessAndEqComp> l1(items1, items1 + 2);
+        const std::list<LessAndEqComp> l2(items2, items2 + 2);
+        assert(testComparisons(l1, l2, false, false));
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/get_allocator.pass.cpp
new file mode 100644
index 0000000..895fc21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/get_allocator.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// class list
+
+// allocator_type get_allocator() const
+
+#include <list>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::list<int> l(alloc);
+        assert(l.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::list<int, other_allocator<int> > l(alloc);
+        assert(l.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/incomplete_type.pass.cpp
new file mode 100644
index 0000000..103117f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/incomplete_type.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// Check that std::list and its iterators can be instantiated with an incomplete
+// type.
+
+#include <list>
+
+#include "test_macros.h"
+
+struct A {
+    std::list<A> l;
+    std::list<A>::iterator it;
+    std::list<A>::const_iterator cit;
+    std::list<A>::reverse_iterator rit;
+    std::list<A>::const_reverse_iterator crit;
+};
+
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..bfa31fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <list>
+
+#include <iterator>
+
+using iterator = std::list<int>::iterator;
+using const_iterator = std::list<int>::const_iterator;
+using reverse_iterator = std::list<int>::reverse_iterator;
+using const_reverse_iterator = std::list<int>::const_reverse_iterator;
+using value_type = int;
+
+static_assert(std::bidirectional_iterator<iterator>);
+static_assert(!std::random_access_iterator<iterator>);
+static_assert(std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, iterator>);
+static_assert( std::indirectly_movable_storable<iterator, iterator>);
+static_assert(!std::indirectly_movable<iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_movable<iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_copyable<iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::bidirectional_iterator<const_iterator>);
+static_assert(!std::random_access_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<const_iterator, iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_movable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/iterators.pass.cpp
new file mode 100644
index 0000000..0fe92df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/iterators.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator       begin();
+// iterator       end();
+// const_iterator begin()  const;
+// const_iterator end()    const;
+// const_iterator cbegin() const;
+// const_iterator cend()   const;
+
+#include <list>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct A
+{
+    int first;
+    int second;
+};
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        typedef std::list<T> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::list<T> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::list<T> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef int T;
+        typedef std::list<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 1);
+        *i = 10;
+        assert(*i == 10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+    }
+    {
+        typedef int T;
+        typedef std::list<T> C;
+        C::iterator i;
+        C::const_iterator j;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::list<T, min_allocator<T>> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::list<T, min_allocator<T>> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::list<T, min_allocator<T>> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef int T;
+        typedef std::list<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 1);
+        *i = 10;
+        assert(*i == 10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+    }
+    {
+        typedef int T;
+        typedef std::list<T, min_allocator<T>> C;
+        C::iterator i;
+        C::const_iterator j;
+    }
+    {
+        typedef A T;
+        typedef std::list<T, min_allocator<T>> C;
+        C c = {A{1, 2}};
+        C::iterator i = c.begin();
+        i->first = 3;
+        C::const_iterator j = i;
+        assert(j->first == 3);
+    }
+#endif
+#if TEST_STD_VER > 11
+    {
+        std::list<int>::iterator ii1{}, ii2{};
+        std::list<int>::iterator ii4 = ii1;
+        std::list<int>::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/empty.pass.cpp
new file mode 100644
index 0000000..7619ec5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// class list
+
+// bool empty() const noexcept;
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::list<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::list<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/empty.verify.cpp
new file mode 100644
index 0000000..4edf426
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// class list
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <list>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::list<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/max_size.pass.cpp
new file mode 100644
index 0000000..8560a6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/max_size.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// size_type max_size() const noexcept
+
+#include <cassert>
+#include <limits>
+#include <list>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    typedef limited_allocator<int, 10> A;
+    typedef std::list<int, A> C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<int, (size_t)-1> A;
+    typedef std::list<int, A> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+  }
+  {
+    typedef std::list<char> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/resize_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/resize_size.pass.cpp
new file mode 100644
index 0000000..b27b9a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/resize_size.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void resize(size_type sz);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int> l(5, 2);
+        l.resize(2);
+        assert(l.size() == 2);
+        assert(std::distance(l.begin(), l.end()) == 2);
+        assert(l == std::list<int>(2, 2));
+    }
+    {
+        std::list<int> l(5, 2);
+        l.resize(10);
+        assert(l.size() == 10);
+        assert(std::distance(l.begin(), l.end()) == 10);
+        assert(l.front() == 2);
+        assert(l.back() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<DefaultOnly> l(10);
+        l.resize(5);
+        assert(l.size() == 5);
+        assert(std::distance(l.begin(), l.end()) == 5);
+    }
+    {
+        std::list<DefaultOnly> l(10);
+        l.resize(20);
+        assert(l.size() == 20);
+        assert(std::distance(l.begin(), l.end()) == 20);
+    }
+    {
+        std::list<int, min_allocator<int>> l(5, 2);
+        l.resize(2);
+        assert(l.size() == 2);
+        assert(std::distance(l.begin(), l.end()) == 2);
+        assert((l == std::list<int, min_allocator<int>>(2, 2)));
+    }
+    {
+        std::list<int, min_allocator<int>> l(5, 2);
+        l.resize(10);
+        assert(l.size() == 10);
+        assert(std::distance(l.begin(), l.end()) == 10);
+        assert(l.front() == 2);
+        assert(l.back() == 0);
+    }
+    {
+        std::list<DefaultOnly, min_allocator<DefaultOnly>> l(10);
+        l.resize(5);
+        assert(l.size() == 5);
+        assert(std::distance(l.begin(), l.end()) == 5);
+    }
+    {
+        std::list<DefaultOnly, min_allocator<DefaultOnly>> l(10);
+        l.resize(20);
+        assert(l.size() == 20);
+        assert(std::distance(l.begin(), l.end()) == 20);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/resize_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/resize_size_value.pass.cpp
new file mode 100644
index 0000000..112287a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/resize_size_value.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void resize(size_type sz, const value_type& x);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<double> l(5, 2);
+        l.resize(2, 3.5);
+        assert(l.size() == 2);
+        assert(std::distance(l.begin(), l.end()) == 2);
+        assert(l == std::list<double>(2, 2));
+    }
+    {
+        std::list<double> l(5, 2);
+        l.resize(10, 3.5);
+        assert(l.size() == 10);
+        assert(std::distance(l.begin(), l.end()) == 10);
+        assert(l.front() == 2);
+        assert(l.back() == 3.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<double, min_allocator<double>> l(5, 2);
+        l.resize(2, 3.5);
+        assert(l.size() == 2);
+        assert(std::distance(l.begin(), l.end()) == 2);
+        assert((l == std::list<double, min_allocator<double>>(2, 2)));
+    }
+    {
+        std::list<double, min_allocator<double>> l(5, 2);
+        l.resize(10, 3.5);
+        assert(l.size() == 10);
+        assert(std::distance(l.begin(), l.end()) == 10);
+        assert(l.front() == 2);
+        assert(l.back() == 3.5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/size.pass.cpp
new file mode 100644
index 0000000..d4801e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.capacity/size.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// class list
+
+// size_type size() const noexcept;
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::list<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(C::value_type(2));
+    assert(c.size() == 1);
+    c.push_back(C::value_type(1));
+    assert(c.size() == 2);
+    c.push_back(C::value_type(3));
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::list<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(C::value_type(2));
+    assert(c.size() == 1);
+    c.push_back(C::value_type(1));
+    assert(c.size() == 2);
+    c.push_back(C::value_type(3));
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..4d183b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list& operator=(const list& c);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> lo;
+  std::list<operator_hijacker> l;
+  l = lo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_copy.pass.cpp
new file mode 100644
index 0000000..39369d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_copy.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list& operator=(const list& c);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int, test_allocator<int> > l(3, 2, test_allocator<int>(5));
+        std::list<int, test_allocator<int> > l2(l, test_allocator<int>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<int>(3));
+    }
+    {
+        std::list<int, other_allocator<int> > l(3, 2, other_allocator<int>(5));
+        std::list<int, other_allocator<int> > l2(l, other_allocator<int>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int> > l(3, 2, min_allocator<int>());
+        std::list<int, min_allocator<int> > l2(l, min_allocator<int>());
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<int>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..6aeec2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// void assign(initializer_list<value_type> il);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int> d;
+    d.assign({3, 4, 5, 6});
+    assert(d.size() == 4);
+    std::list<int>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+    {
+    std::list<int, min_allocator<int>> d;
+    d.assign({3, 4, 5, 6});
+    assert(d.size() == 4);
+    std::list<int, min_allocator<int>>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..a305587
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_move.addressof.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list& operator=(list&& c);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> lo;
+  std::list<operator_hijacker> l;
+  l = std::move(lo);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_move.pass.cpp
new file mode 100644
index 0000000..1e459a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/assign_move.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list& operator=(list&& c);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, test_allocator<MoveOnly> > l2(test_allocator<MoveOnly>(5));
+        std::list<MoveOnly, test_allocator<MoveOnly> >::iterator it = l.begin();
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(it == l2.begin());  // Iterators remain valid
+    }
+    {
+        std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, test_allocator<MoveOnly> > l2(test_allocator<MoveOnly>(6));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == test_allocator<MoveOnly>(6));
+    }
+    {
+        std::list<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
+        std::list<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, other_allocator<MoveOnly> > l2(other_allocator<MoveOnly>(6));
+        std::list<MoveOnly, other_allocator<MoveOnly> >::iterator it = l.begin();
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(it == l2.begin());  // Iterators remain valid
+    }
+    {
+        std::list<MoveOnly, min_allocator<MoveOnly> > l(min_allocator<MoveOnly>{});
+        std::list<MoveOnly, min_allocator<MoveOnly> > lo(min_allocator<MoveOnly>{});
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, min_allocator<MoveOnly> > l2(min_allocator<MoveOnly>{});
+        std::list<MoveOnly, min_allocator<MoveOnly> >::iterator it = l.begin();
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(it == l2.begin());  // Iterators remain valid
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/copy.pass.cpp
new file mode 100644
index 0000000..153cd2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/copy.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list(const list& c);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int> l(3, 2);
+        std::list<int> l2 = l;
+        assert(l2 == l);
+    }
+    {
+        std::list<int, test_allocator<int> > l(3, 2, test_allocator<int>(5));
+        std::list<int, test_allocator<int> > l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == l.get_allocator());
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, other_allocator<int> > l(3, 2, other_allocator<int>(5));
+        std::list<int, other_allocator<int> > l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(-2));
+    }
+    {
+        std::list<int, min_allocator<int>> l(3, 2);
+        std::list<int, min_allocator<int>> l2 = l;
+        assert(l2 == l);
+    }
+    {
+        std::list<int, min_allocator<int> > l(3, 2, min_allocator<int>());
+        std::list<int, min_allocator<int> > l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == l.get_allocator());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..99d7879
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/copy_alloc.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list(const list& c, const allocator_type& a);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int, test_allocator<int> > l(3, 2, test_allocator<int>(5));
+        std::list<int, test_allocator<int> > l2(l, test_allocator<int>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<int>(3));
+    }
+    {
+        std::list<int, other_allocator<int> > l(3, 2, other_allocator<int>(5));
+        std::list<int, other_allocator<int> > l2(l, other_allocator<int>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(3));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int> > l(3, 2, min_allocator<int>());
+        std::list<int, min_allocator<int> > l2(l, min_allocator<int>());
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<int>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/deduct.fail.cpp
new file mode 100644
index 0000000..96d1451
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/deduct.fail.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    list(InputIterator, InputIterator, Allocator = Allocator())
+//    -> list<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+struct A {};
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+
+//  Test the implicit deduction guides
+    {
+//  list (allocator &)
+    std::list lst((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'list'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      deque<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/deduct.pass.cpp
new file mode 100644
index 0000000..a82dac7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/deduct.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    list(InputIterator, InputIterator, Allocator = Allocator())
+//    -> list<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <list>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+    const int arr[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::list lst(std::begin(arr), std::end(arr));
+
+    static_assert(std::is_same_v<decltype(lst), std::list<int>>, "");
+    assert(std::equal(lst.begin(), lst.end(), std::begin(arr), std::end(arr)));
+    }
+
+    {
+    const long arr[] = {INT_MAX, 1L, 2L, 3L };
+    std::list lst(std::begin(arr), std::end(arr), std::allocator<long>());
+    static_assert(std::is_same_v<decltype(lst)::value_type, long>, "");
+    assert(lst.size() == 4);
+    auto it = lst.begin();
+    assert(*it++ == INT_MAX);
+    assert(*it++ == 1L);
+    assert(*it++ == 2L);
+    }
+
+//  Test the implicit deduction guides
+
+    {
+//  We don't expect this one to work.
+//  std::list lst(std::allocator<int>()); // list (allocator &)
+    }
+
+    {
+    std::list lst(1, A{}); // list (size_type, T)
+    static_assert(std::is_same_v<decltype(lst)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(lst)::allocator_type, std::allocator<A>>, "");
+    assert(lst.size() == 1);
+    }
+
+    {
+    std::list lst(1, A{}, test_allocator<A>()); // list (size_type, T, allocator)
+    static_assert(std::is_same_v<decltype(lst)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(lst)::allocator_type, test_allocator<A>>, "");
+    assert(lst.size() == 1);
+    }
+
+    {
+    std::list lst{1U, 2U, 3U, 4U, 5U}; // list(initializer-list)
+    static_assert(std::is_same_v<decltype(lst)::value_type, unsigned>, "");
+    assert(lst.size() == 5);
+    auto it = lst.begin();
+    std::advance(it, 2);
+    assert(*it == 3U);
+    }
+
+    {
+    std::list lst({1.0, 2.0, 3.0, 4.0}, test_allocator<double>()); // list(initializer-list, allocator)
+    static_assert(std::is_same_v<decltype(lst)::value_type, double>, "");
+    static_assert(std::is_same_v<decltype(lst)::allocator_type, test_allocator<double>>, "");
+    assert(lst.size() == 4);
+    auto it = lst.begin();
+    std::advance(it, 3);
+    assert(*it == 4.0);
+    }
+
+    {
+    std::list<long double> source;
+    std::list lst(source); // list(list &)
+    static_assert(std::is_same_v<decltype(lst)::value_type, long double>, "");
+    static_assert(std::is_same_v<decltype(lst)::allocator_type, std::allocator<long double>>, "");
+    assert(lst.size() == 0);
+    }
+
+    {
+        typedef test_allocator<short> Alloc;
+        typedef test_allocator<int> ConvertibleToAlloc;
+
+        {
+        std::list<short, Alloc> source;
+        std::list lst(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(lst), decltype(source)>);
+        }
+
+        {
+        std::list<short, Alloc> source;
+        std::list lst(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(lst), decltype(source)>);
+        }
+
+        {
+        std::list<short, Alloc> source;
+        std::list lst(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(lst), decltype(source)>);
+        }
+
+        {
+        std::list<short, Alloc> source;
+        std::list lst(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(lst), decltype(source)>);
+        }
+    }
+
+    SequenceContainerDeductionGuidesSfinaeAway<std::list, std::list<int>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default.pass.cpp
new file mode 100644
index 0000000..32f2729
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// explicit list(const Alloc& = Alloc());
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<DefaultOnly> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int> l((std::allocator<int>()));
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<DefaultOnly, min_allocator<DefaultOnly>> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int, min_allocator<int>> l((min_allocator<int>()));
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int> l = {};
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int, explicit_allocator<int>> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int, explicit_allocator<int>> l((explicit_allocator<int>()));
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..d34efac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list()
+//        noexcept(is_nothrow_default_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::list<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default_stack_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default_stack_alloc.pass.cpp
new file mode 100644
index 0000000..67c886b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/default_stack_alloc.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// explicit list(const Alloc& = Alloc());
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int> l((std::allocator<int>()));
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int, limited_allocator<int, 4> > l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l;
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+    {
+        std::list<int, min_allocator<int>> l((min_allocator<int>()));
+        assert(l.size() == 0);
+        assert(std::distance(l.begin(), l.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/dtor.pass.cpp
new file mode 100644
index 0000000..8d04a09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/dtor.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// ~list()
+
+// no emplace_back in C++03
+// UNSUPPORTED: c++03
+
+#include <list>
+#include <cassert>
+#include <set>
+
+#include "test_macros.h"
+
+
+std::set<int> destroyed;
+
+struct Foo {
+    explicit Foo(int i) : value(i) { }
+    ~Foo() { destroyed.insert(value); }
+    int value;
+};
+
+int main(int, char**)
+{
+    {
+        std::list<Foo> list;
+        list.emplace_back(1);
+        list.emplace_back(2);
+        list.emplace_back(3);
+        assert(destroyed.empty());
+    }
+    assert(destroyed.count(1) == 1);
+    assert(destroyed.count(2) == 1);
+    assert(destroyed.count(3) == 1);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..a6c9a83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// ~list() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    ~some_alloc() noexcept(false);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::list<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..8583d67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/initializer_list.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list(initializer_list<value_type> il);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int> d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    std::list<int>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+    {
+    std::list<int, min_allocator<int>> d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    std::list<int, min_allocator<int>>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/initializer_list_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/initializer_list_alloc.pass.cpp
new file mode 100644
index 0000000..0e12793
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/initializer_list_alloc.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list(initializer_list<value_type> il, const Allocator& a = allocator_type());
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int, test_allocator<int>> d({3, 4, 5, 6}, test_allocator<int>(3));
+    assert(d.get_allocator() == test_allocator<int>(3));
+    assert(d.size() == 4);
+    std::list<int, test_allocator<int>>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+    {
+    std::list<int, min_allocator<int>> d({3, 4, 5, 6}, min_allocator<int>());
+    assert(d.get_allocator() == min_allocator<int>());
+    assert(d.size() == 4);
+    std::list<int, min_allocator<int>>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/input_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/input_iterator.pass.cpp
new file mode 100644
index 0000000..d13696f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/input_iterator.pass.cpp
@@ -0,0 +1,256 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class InputIterator>
+//   list(InputIterator first, InputIterator last, const Allocator& = Allocator());
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#include "container_test_types.h"
+#endif
+
+void basic_test()
+{
+    {
+        int a[] = {0, 1, 2, 3};
+        std::list<int> l(cpp17_input_iterator<const int*>(a),
+                         cpp17_input_iterator<const int*>(a + sizeof(a)/sizeof(a[0])));
+        assert(l.size() == sizeof(a)/sizeof(a[0]));
+        assert(std::distance(l.begin(), l.end()) == sizeof(a)/sizeof(a[0]));
+        int j = 0;
+        for (std::list<int>::const_iterator i = l.begin(), e = l.end(); i != e; ++i, ++j)
+            assert(*i == j);
+    }
+    {
+        int a[] = {0, 1, 2, 3};
+        std::list<int> l(cpp17_input_iterator<const int*>(a),
+                         cpp17_input_iterator<const int*>(a + sizeof(a)/sizeof(a[0])),
+                         std::allocator<int>());
+        assert(l.size() == sizeof(a)/sizeof(a[0]));
+        assert(std::distance(l.begin(), l.end()) == sizeof(a)/sizeof(a[0]));
+        int j = 0;
+        for (std::list<int>::const_iterator i = l.begin(), e = l.end(); i != e; ++i, ++j)
+            assert(*i == j);
+    }
+    {
+        int a[] = {0, 1, 2, 3};
+        // Add 2 for implementations that dynamically allocate a sentinel node and container proxy.
+        std::list<int, limited_allocator<int, sizeof(a)/sizeof(a[0]) + 2> > l(cpp17_input_iterator<const int*>(a),
+                         cpp17_input_iterator<const int*>(a + sizeof(a)/sizeof(a[0])));
+        assert(l.size() == sizeof(a)/sizeof(a[0]));
+        assert(std::distance(l.begin(), l.end()) == sizeof(a)/sizeof(a[0]));
+        int j = 0;
+        for (std::list<int>::const_iterator i = l.begin(), e = l.end(); i != e; ++i, ++j)
+            assert(*i == j);
+    }
+#if TEST_STD_VER >= 11
+    {
+        int a[] = {0, 1, 2, 3};
+        std::list<int, min_allocator<int>> l(cpp17_input_iterator<const int*>(a),
+                         cpp17_input_iterator<const int*>(a + sizeof(a)/sizeof(a[0])));
+        assert(l.size() == sizeof(a)/sizeof(a[0]));
+        assert(std::distance(l.begin(), l.end()) == sizeof(a)/sizeof(a[0]));
+        int j = 0;
+        for (std::list<int, min_allocator<int>>::const_iterator i = l.begin(), e = l.end(); i != e; ++i, ++j)
+            assert(*i == j);
+    }
+    {
+        int a[] = {0, 1, 2, 3};
+        std::list<int, min_allocator<int>> l(cpp17_input_iterator<const int*>(a),
+                         cpp17_input_iterator<const int*>(a + sizeof(a)/sizeof(a[0])),
+                         min_allocator<int>());
+        assert(l.size() == sizeof(a)/sizeof(a[0]));
+        assert(std::distance(l.begin(), l.end()) == sizeof(a)/sizeof(a[0]));
+        int j = 0;
+        for (std::list<int, min_allocator<int>>::const_iterator i = l.begin(), e = l.end(); i != e; ++i, ++j)
+            assert(*i == j);
+    }
+#endif
+}
+
+
+
+void test_emplacable_concept() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructible<int>;
+    using It = random_access_iterator<int*>;
+    {
+      std::list<T> v(It(arr1), It(std::end(arr1)));
+      auto I = v.begin();
+      assert(I->value == 42);
+    }
+    {
+      std::list<T> v(It(arr2), It(std::end(arr2)));
+      auto I = v.begin();
+      assert(I->value == 1);
+      ++I;
+      assert(I->value == 101);
+      ++I;
+      assert(I->value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructible<int>;
+    using It = cpp17_input_iterator<int*>;
+    {
+      std::list<T> v(It(arr1), It(std::end(arr1)));
+      auto I = v.begin();
+      assert(I->value == 42);
+    }
+    {
+      std::list<T> v(It(arr2), It(std::end(arr2)));
+      auto I = v.begin();
+      //assert(v[0].copied == 0);
+      assert(I->value == 1);
+      //assert(v[1].copied == 0);
+      ++I;
+      assert(I->value == 101);
+      ++I;
+      assert(I->value == 42);
+    }
+  }
+#endif
+}
+
+
+
+void test_emplacable_concept_with_alloc() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructible<int>;
+    using It = random_access_iterator<int*>;
+    std::allocator<T> a;
+    {
+      std::list<T> v(It(arr1), It(std::end(arr1)), a);
+      auto I = v.begin();
+      assert(I->value == 42);
+    }
+    {
+      std::list<T> v(It(arr2), It(std::end(arr2)), a);
+      auto I = v.begin();
+      assert(I->value == 1);
+      ++I;
+      assert(I->value == 101);
+      ++I;
+      assert(I->value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructible<int>;
+    using It = cpp17_input_iterator<int*>;
+    std::allocator<T> a;
+    {
+      std::list<T> v(It(arr1), It(std::end(arr1)), a);
+      auto I = v.begin();
+      assert(I->value == 42);
+    }
+    {
+      std::list<T> v(It(arr2), It(std::end(arr2)), a);
+      auto I = v.begin();
+      //assert(v[0].copied == 0);
+      assert(I->value == 1);
+      //assert(v[1].copied == 0);
+      ++I;
+      assert(I->value == 101);
+      ++I;
+      assert(I->value == 42);
+    }
+  }
+#endif
+}
+
+void test_ctor_under_alloc() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using C = TCT::list<>;
+    using It = forward_iterator<int*>;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)));
+    }
+    {
+      ExpectConstructGuard<int&> G(3);
+      C v(It(arr2), It(std::end(arr2)));
+    }
+  }
+  {
+    using C = TCT::list<>;
+    using It = cpp17_input_iterator<int*>;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)));
+    }
+    {
+      ExpectConstructGuard<int&> G(3);
+      C v(It(arr2), It(std::end(arr2)));
+    }
+  }
+#endif
+}
+
+void test_ctor_under_alloc_with_alloc() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using C = TCT::list<>;
+    using It = forward_iterator<int*>;
+    using Alloc = typename C::allocator_type;
+    Alloc a;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)), a);
+    }
+    {
+      ExpectConstructGuard<int&> G(3);
+      C v(It(arr2), It(std::end(arr2)), a);
+    }
+  }
+  {
+    using C = TCT::list<>;
+    using It = cpp17_input_iterator<int*>;
+    using Alloc = typename C::allocator_type;
+    Alloc a;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)), a);
+    }
+    {
+      ExpectConstructGuard<int&> G(3);
+      C v(It(arr2), It(std::end(arr2)), a);
+    }
+  }
+#endif
+}
+
+
+
+int main(int, char**) {
+  basic_test();
+  test_emplacable_concept();
+  test_emplacable_concept_with_alloc();
+  test_ctor_under_alloc();
+  test_ctor_under_alloc_with_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move.pass.cpp
new file mode 100644
index 0000000..d5e09ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list(list&& c);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, test_allocator<MoveOnly> >::iterator it = l.begin();
+        std::list<MoveOnly, test_allocator<MoveOnly> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(it == l2.begin());  // Iterators remain valid
+    }
+    {
+        std::list<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
+        std::list<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, other_allocator<MoveOnly> >::iterator it = l.begin();
+        std::list<MoveOnly, other_allocator<MoveOnly> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(it == l2.begin());  // Iterators remain valid
+    }
+    {
+        std::list<MoveOnly, min_allocator<MoveOnly> > l(min_allocator<MoveOnly>{});
+        std::list<MoveOnly, min_allocator<MoveOnly> > lo(min_allocator<MoveOnly>{});
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, min_allocator<MoveOnly> >::iterator it = l.begin();
+        std::list<MoveOnly, min_allocator<MoveOnly> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(it == l2.begin());  // Iterators remain valid
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..694fccd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_alloc.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list(list&& c, const allocator_type& a);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, test_allocator<MoveOnly> > l2(std::move(l), test_allocator<MoveOnly>(6));
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == test_allocator<MoveOnly>(6));
+    }
+    {
+        std::list<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::list<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, test_allocator<MoveOnly> > l2(std::move(l), test_allocator<MoveOnly>(5));
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == test_allocator<MoveOnly>(5));
+    }
+    {
+        std::list<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
+        std::list<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, other_allocator<MoveOnly> > l2(std::move(l), other_allocator<MoveOnly>(4));
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == other_allocator<MoveOnly>(4));
+    }
+    {
+        std::list<MoveOnly, min_allocator<MoveOnly> > l(min_allocator<MoveOnly>{});
+        std::list<MoveOnly, min_allocator<MoveOnly> > lo(min_allocator<MoveOnly>{});
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::list<MoveOnly, min_allocator<MoveOnly> > l2(std::move(l), min_allocator<MoveOnly>());
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == min_allocator<MoveOnly>());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..daa2410
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list& operator=(list&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::list<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..6c1c89c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/move_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list(list&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::list<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::list<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/op_equal_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/op_equal_initializer_list.pass.cpp
new file mode 100644
index 0000000..08cbf2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/op_equal_initializer_list.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// list& operator=(initializer_list<value_type> il);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int> d;
+    d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    std::list<int>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+    {
+    std::list<int, min_allocator<int>> d;
+    d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    std::list<int, min_allocator<int>>::iterator i = d.begin();
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/size_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/size_type.pass.cpp
new file mode 100644
index 0000000..ef365d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/size_type.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// explicit list(size_type n);
+
+#include <list>
+#include <cassert>
+#include <cstddef>
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class T, class Allocator>
+void
+test3(unsigned n, Allocator const &alloc = Allocator())
+{
+#if TEST_STD_VER > 11
+    typedef std::list<T, Allocator> C;
+    {
+    C d(n, alloc);
+    assert(d.size() == n);
+    assert(static_cast<std::size_t>(std::distance(d.begin(), d.end())) == n);
+    assert(d.get_allocator() == alloc);
+    }
+#else
+    ((void)n);
+    ((void)alloc);
+#endif
+}
+
+
+int main(int, char**)
+{
+    {
+        std::list<int> l(3);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int>::const_iterator i = l.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+    }
+    {
+        // Add 2 for implementations that dynamically allocate a sentinel node and container proxy.
+        std::list<int, limited_allocator<int, 3 + 2> > l(3);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int>::const_iterator i = l.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::list<int, min_allocator<int> > C;
+        C l(3, min_allocator<int> ());
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        C::const_iterator i = l.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+        test3<int, min_allocator<int>> (3);
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        std::list<DefaultOnly> l(3);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+    }
+    {
+        std::list<int, min_allocator<int>> l(3);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int, min_allocator<int>>::const_iterator i = l.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+        ++i;
+        assert(*i == 0);
+    }
+    {
+        std::list<DefaultOnly, min_allocator<DefaultOnly>> l(3);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/size_value_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/size_value_alloc.pass.cpp
new file mode 100644
index 0000000..bced58d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.cons/size_value_alloc.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// list(size_type n, const T& value, const Allocator& = Allocator());
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::list<int> l(3, 2);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int>::const_iterator i = l.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l(3, 2, std::allocator<int>());
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int>::const_iterator i = l.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        // Add 2 for implementations that dynamically allocate a sentinel node and container proxy.
+        std::list<int, limited_allocator<int, 3 + 2> > l(3, 2);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int>::const_iterator i = l.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l(3, 2);
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int, min_allocator<int>>::const_iterator i = l.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l(3, 2, min_allocator<int>());
+        assert(l.size() == 3);
+        assert(std::distance(l.begin(), l.end()) == 3);
+        std::list<int, min_allocator<int>>::const_iterator i = l.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.erasure/erase.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.erasure/erase.pass.cpp
new file mode 100644
index 0000000..6b08308
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.erasure/erase.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <list>
+
+// template <class T, class Allocator, class U>
+//   typename list<T, Allocator>::size_type
+//   erase(list<T, Allocator>& c, const U& value);
+
+#include <list>
+#include <optional>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class U>
+void test0(S s, U val, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase(s, val)));
+  assert(expected_erased_count == std::erase(s, val));
+  assert(s == expected);
+}
+
+template <class S>
+void test()
+{
+  test0(S(), 1, S(), 0);
+
+  test0(S({1}), 1, S(), 1);
+  test0(S({1}), 2, S({1}), 0);
+
+  test0(S({1, 2}), 1, S({2}), 1);
+  test0(S({1, 2}), 2, S({1}), 1);
+  test0(S({1, 2}), 3, S({1, 2}), 0);
+  test0(S({1, 1}), 1, S(), 2);
+  test0(S({1, 1}), 3, S({1, 1}), 0);
+
+  test0(S({1, 2, 3}), 1, S({2, 3}), 1);
+  test0(S({1, 2, 3}), 2, S({1, 3}), 1);
+  test0(S({1, 2, 3}), 3, S({1, 2}), 1);
+  test0(S({1, 2, 3}), 4, S({1, 2, 3}), 0);
+
+  test0(S({1, 1, 1}), 1, S(), 3);
+  test0(S({1, 1, 1}), 2, S({1, 1, 1}), 0);
+  test0(S({1, 1, 2}), 1, S({2}), 2);
+  test0(S({1, 1, 2}), 2, S({1, 1}), 1);
+  test0(S({1, 1, 2}), 3, S({1, 1, 2}), 0);
+  test0(S({1, 2, 2}), 1, S({2, 2}), 1);
+  test0(S({1, 2, 2}), 2, S({1}), 2);
+  test0(S({1, 2, 2}), 3, S({1, 2, 2}), 0);
+
+  //  Test cross-type erasure
+  using opt = std::optional<typename S::value_type>;
+  test0(S({1, 2, 1}), opt(), S({1, 2, 1}), 0);
+  test0(S({1, 2, 1}), opt(1), S({2}), 2);
+  test0(S({1, 2, 1}), opt(2), S({1, 1}), 1);
+  test0(S({1, 2, 1}), opt(3), S({1, 2, 1}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::list<int>>();
+    test<std::list<int, min_allocator<int>>> ();
+    test<std::list<int, test_allocator<int>>> ();
+
+    test<std::list<long>>();
+    test<std::list<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..b6670cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.erasure/erase_if.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <list>
+
+// template <class T, class Allocator, class Predicate>
+//   typename list<T, Allocator>::size_type
+//   erase_if(list<T, Allocator>& c, Predicate pred);
+
+#include <list>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == expected);
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(), is1, S(), 0);
+
+    test0(S({1}), is1, S(), 1);
+    test0(S({1}), is2, S({1}), 0);
+
+    test0(S({1, 2}), is1, S({2}), 1);
+    test0(S({1, 2}), is2, S({1}), 1);
+    test0(S({1, 2}), is3, S({1, 2}), 0);
+    test0(S({1, 1}), is1, S(), 2);
+    test0(S({1, 1}), is3, S({1, 1}), 0);
+
+    test0(S({1, 2, 3}), is1, S({2, 3}), 1);
+    test0(S({1, 2, 3}), is2, S({1, 3}), 1);
+    test0(S({1, 2, 3}), is3, S({1, 2}), 1);
+    test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
+
+    test0(S({1, 1, 1}), is1, S(), 3);
+    test0(S({1, 1, 1}), is2, S({1, 1, 1}), 0);
+    test0(S({1, 1, 2}), is1, S({2}), 2);
+    test0(S({1, 1, 2}), is2, S({1, 1}), 1);
+    test0(S({1, 1, 2}), is3, S({1, 1, 2}), 0);
+    test0(S({1, 2, 2}), is1, S({2, 2}), 1);
+    test0(S({1, 2, 2}), is2, S({1}), 2);
+    test0(S({1, 2, 2}), is3, S({1, 2, 2}), 0);
+
+    test0(S({1, 2, 3}), True, S(), 3);
+    test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
+}
+
+int main(int, char**)
+{
+    test<std::list<int>>();
+    test<std::list<int, min_allocator<int>>> ();
+    test<std::list<int, test_allocator<int>>> ();
+
+    test<std::list<long>>();
+    test<std::list<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..0afd0a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/clear.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void clear() noexcept;
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a[] = {1, 2, 3};
+    std::list<int> c(a, a+3);
+    ASSERT_NOEXCEPT(c.clear());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a[] = {1, 2, 3};
+    std::list<int, min_allocator<int>> c(a, a+3);
+    ASSERT_NOEXCEPT(c.clear());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace.addressof.compile.pass.cpp
new file mode 100644
index 0000000..ac6a9d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace.addressof.compile.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// template <class... Args> void emplace(const_iterator p, Args&&... args);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test(std::list<operator_hijacker>& l) { l.emplace(l.begin(), l.front()); }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..2b6e599
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// template <class... Args> void emplace(const_iterator p, Args&&... args);
+
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+class A
+{
+    int i_;
+    double d_;
+
+    A(const A&);
+    A& operator=(const A&);
+public:
+    A(int i, double d)
+        : i_(i), d_(d) {}
+
+    int geti() const {return i_;}
+    double getd() const {return d_;}
+};
+
+int main(int, char**)
+{
+    {
+    std::list<A> c;
+    c.emplace(c.cbegin(), 2, 3.5);
+    assert(c.size() == 1);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    c.emplace(c.cend(), 3, 4.5);
+    assert(c.size() == 2);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    assert(c.back().geti() == 3);
+    assert(c.back().getd() == 4.5);
+    }
+    {
+    std::list<A, min_allocator<A>> c;
+    c.emplace(c.cbegin(), 2, 3.5);
+    assert(c.size() == 1);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    c.emplace(c.cend(), 3, 4.5);
+    assert(c.size() == 2);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    assert(c.back().geti() == 3);
+    assert(c.back().getd() == 4.5);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace_back.pass.cpp
new file mode 100644
index 0000000..0d7965b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace_back.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// template <class... Args> reference emplace_back(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+class A
+{
+    int i_;
+    double d_;
+
+    A(const A&);
+    A& operator=(const A&);
+public:
+    A(int i, double d)
+        : i_(i), d_(d) {}
+
+    int geti() const {return i_;}
+    double getd() const {return d_;}
+};
+
+int main(int, char**)
+{
+    {
+    std::list<A> c;
+#if TEST_STD_VER > 14
+    A& r1 = c.emplace_back(2, 3.5);
+    assert(c.size() == 1);
+    assert(&r1 == &c.back());
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    A& r2 = c.emplace_back(3, 4.5);
+    assert(c.size() == 2);
+    assert(&r2 == &c.back());
+#else
+    c.emplace_back(2, 3.5);
+    assert(c.size() == 1);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    c.emplace_back(3, 4.5);
+    assert(c.size() == 2);
+#endif
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    assert(c.back().geti() == 3);
+    assert(c.back().getd() == 4.5);
+    }
+    {
+    std::list<A, min_allocator<A>> c;
+#if TEST_STD_VER > 14
+    A& r1 = c.emplace_back(2, 3.5);
+    assert(c.size() == 1);
+    assert(&r1 == &c.back());
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    A& r2 = c.emplace_back(3, 4.5);
+    assert(c.size() == 2);
+    assert(&r2 == &c.back());
+#else
+    c.emplace_back(2, 3.5);
+    assert(c.size() == 1);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    c.emplace_back(3, 4.5);
+    assert(c.size() == 2);
+#endif
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    assert(c.back().geti() == 3);
+    assert(c.back().getd() == 4.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace_front.pass.cpp
new file mode 100644
index 0000000..7d6d186
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/emplace_front.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// template <class... Args> reference emplace_front(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+class A
+{
+    int i_;
+    double d_;
+
+    A(const A&);
+    A& operator=(const A&);
+public:
+    A(int i, double d)
+        : i_(i), d_(d) {}
+
+    int geti() const {return i_;}
+    double getd() const {return d_;}
+};
+
+int main(int, char**)
+{
+    {
+    std::list<A> c;
+#if TEST_STD_VER > 14
+    A& r1 = c.emplace_front(2, 3.5);
+    assert(c.size() == 1);
+    assert(&r1 == &c.front());
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    A& r2 = c.emplace_front(3, 4.5);
+    assert(c.size() == 2);
+    assert(&r2 == &c.front());
+#else
+    c.emplace_front(2, 3.5);
+    assert(c.size() == 1);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    c.emplace_front(3, 4.5);
+    assert(c.size() == 2);
+#endif
+    assert(c.front().geti() == 3);
+    assert(c.front().getd() == 4.5);
+    assert(c.back().geti() == 2);
+    assert(c.back().getd() == 3.5);
+    }
+
+    {
+    std::list<A, min_allocator<A>> c;
+#if TEST_STD_VER > 14
+    A& r1 = c.emplace_front(2, 3.5);
+    assert(c.size() == 1);
+    assert(&r1 == &c.front());
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    A& r2 = c.emplace_front(3, 4.5);
+    assert(c.size() == 2);
+    assert(&r2 == &c.front());
+#else
+    c.emplace_front(2, 3.5);
+    assert(c.size() == 1);
+    assert(c.front().geti() == 2);
+    assert(c.front().getd() == 3.5);
+    c.emplace_front(3, 4.5);
+    assert(c.size() == 2);
+#endif
+    assert(c.front().geti() == 3);
+    assert(c.front().getd() == 4.5);
+    assert(c.back().geti() == 2);
+    assert(c.back().getd() == 3.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..6e84d70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter.addressof.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator erase(const_iterator position);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> l;
+  l.erase(l.begin());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter.pass.cpp
new file mode 100644
index 0000000..b559f8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator erase(const_iterator position);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {1, 2, 3};
+    std::list<int> l1(a1, a1+3);
+    std::list<int>::const_iterator i = l1.begin();
+    ++i;
+    std::list<int>::iterator j = l1.erase(i);
+    assert(l1.size() == 2);
+    assert(std::distance(l1.begin(), l1.end()) == 2);
+    assert(*j == 3);
+    assert(*l1.begin() == 1);
+    assert(*std::next(l1.begin()) == 3);
+    j = l1.erase(j);
+    assert(j == l1.end());
+    assert(l1.size() == 1);
+    assert(std::distance(l1.begin(), l1.end()) == 1);
+    assert(*l1.begin() == 1);
+    j = l1.erase(l1.begin());
+    assert(j == l1.end());
+    assert(l1.size() == 0);
+    assert(std::distance(l1.begin(), l1.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {1, 2, 3};
+    std::list<int, min_allocator<int>> l1(a1, a1+3);
+    std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+    ++i;
+    std::list<int, min_allocator<int>>::iterator j = l1.erase(i);
+    assert(l1.size() == 2);
+    assert(std::distance(l1.begin(), l1.end()) == 2);
+    assert(*j == 3);
+    assert(*l1.begin() == 1);
+    assert(*std::next(l1.begin()) == 3);
+    j = l1.erase(j);
+    assert(j == l1.end());
+    assert(l1.size() == 1);
+    assert(std::distance(l1.begin(), l1.end()) == 1);
+    assert(*l1.begin() == 1);
+    j = l1.erase(l1.begin());
+    assert(j == l1.end());
+    assert(l1.size() == 0);
+    assert(std::distance(l1.begin(), l1.end()) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..d8ea386
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/erase_iter_iter.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    int a1[] = {1, 2, 3};
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int>::iterator i = l1.erase(l1.cbegin(), l1.cbegin());
+        assert(l1.size() == 3);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 3);
+        assert(i == l1.begin());
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 2);
+        assert(i == l1.begin());
+        assert(l1 == std::list<int>(a1+1, a1+3));
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 1);
+        assert(i == l1.begin());
+        assert(l1 == std::list<int>(a1+2, a1+3));
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 3));
+        assert(l1.size() == 0);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 0);
+        assert(i == l1.begin());
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), l1.cbegin());
+        assert(l1.size() == 3);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 3);
+        assert(i == l1.begin());
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 2);
+        assert(i == l1.begin());
+        assert((l1 == std::list<int, min_allocator<int>>(a1+1, a1+3)));
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 1);
+        assert(i == l1.begin());
+        assert((l1 == std::list<int, min_allocator<int>>(a1+2, a1+3)));
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 3));
+        assert(l1.size() == 0);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 0);
+        assert(i == l1.begin());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_initializer_list.pass.cpp
new file mode 100644
index 0000000..32adf3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_initializer_list.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// iterator insert(const_iterator p, initializer_list<value_type> il);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int> d(10, 1);
+    std::list<int>::iterator i = d.insert(std::next(d.cbegin(), 2), {3, 4, 5, 6});
+    assert(d.size() == 14);
+    assert(i == std::next(d.begin(), 2));
+    i = d.begin();
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    }
+    {
+    std::list<int, min_allocator<int>> d(10, 1);
+    std::list<int, min_allocator<int>>::iterator i = d.insert(std::next(d.cbegin(), 2), {3, 4, 5, 6});
+    assert(d.size() == 14);
+    assert(i == std::next(d.begin(), 2));
+    i = d.begin();
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 3);
+    assert(*i++ == 4);
+    assert(*i++ == 5);
+    assert(*i++ == 6);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    assert(*i++ == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..d1177e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_iter_iter.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <InputIterator Iter>
+//   iterator insert(const_iterator position, Iter first, Iter last);
+
+#include <list>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+#include "count_new.h"
+
+template <class List>
+void test() {
+    int a1[] = {1, 2, 3};
+    List l1;
+    typename List::iterator i = l1.insert(l1.begin(), a1, a1+3);
+    assert(i == l1.begin());
+    assert(l1.size() == 3);
+    assert(std::distance(l1.begin(), l1.end()) == 3);
+    i = l1.begin();
+    assert(*i == 1);
+    ++i;
+    assert(*i == 2);
+    ++i;
+    assert(*i == 3);
+    int a2[] = {4, 5, 6};
+    i = l1.insert(i, a2, a2+3);
+    assert(*i == 4);
+    assert(l1.size() == 6);
+    assert(std::distance(l1.begin(), l1.end()) == 6);
+    i = l1.begin();
+    assert(*i == 1);
+    ++i;
+    assert(*i == 2);
+    ++i;
+    assert(*i == 4);
+    ++i;
+    assert(*i == 5);
+    ++i;
+    assert(*i == 6);
+    ++i;
+    assert(*i == 3);
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS) && !defined(DISABLE_NEW_COUNT)
+    globalMemCounter.throw_after = 2;
+    int save_count = globalMemCounter.outstanding_new;
+    try
+    {
+        i = l1.insert(i, a2, a2+3);
+        assert(false);
+    }
+    catch (...)
+    {
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(save_count));
+    assert(l1.size() == 6);
+    assert(std::distance(l1.begin(), l1.end()) == 6);
+    i = l1.begin();
+    assert(*i == 1);
+    ++i;
+    assert(*i == 2);
+    ++i;
+    assert(*i == 4);
+    ++i;
+    assert(*i == 5);
+    ++i;
+    assert(*i == 6);
+    ++i;
+    assert(*i == 3);
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::list<int> >();
+#if TEST_STD_VER >= 11
+    test<std::list<int, min_allocator<int>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_rvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_rvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..90608ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_rvalue.addressof.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// iterator insert(const_iterator position, value_type&& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> l;
+  l.insert(l.begin(), operator_hijacker{});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_rvalue.pass.cpp
new file mode 100644
index 0000000..5a54891
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_rvalue.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// iterator insert(const_iterator position, value_type&& x);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<MoveOnly> l1;
+    l1.insert(l1.cend(), MoveOnly(1));
+    assert(l1.size() == 1);
+    assert(l1.front() == MoveOnly(1));
+    l1.insert(l1.cbegin(), MoveOnly(2));
+    assert(l1.size() == 2);
+    assert(l1.front() == MoveOnly(2));
+    assert(l1.back() == MoveOnly(1));
+    }
+    {
+    std::list<MoveOnly, min_allocator<MoveOnly>> l1;
+    l1.insert(l1.cend(), MoveOnly(1));
+    assert(l1.size() == 1);
+    assert(l1.front() == MoveOnly(1));
+    l1.insert(l1.cbegin(), MoveOnly(2));
+    assert(l1.size() == 2);
+    assert(l1.front() == MoveOnly(2));
+    assert(l1.back() == MoveOnly(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_size_value.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_size_value.addressof.compile.pass.cpp
new file mode 100644
index 0000000..cd31a5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_size_value.addressof.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, size_type n, const value_type& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test(std::list<operator_hijacker>& l) { l.insert(l.begin(), l.size(), l.front()); }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_size_value.pass.cpp
new file mode 100644
index 0000000..9fda96d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_size_value.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, size_type n, const value_type& x);
+
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <list>
+#include <cstdlib>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+template <class List>
+void test() {
+    int a1[] = {1, 2, 3};
+    int a2[] = {1, 4, 4, 4, 4, 4, 2, 3};
+    List l1(a1, a1+3);
+    typename List::iterator i = l1.insert(std::next(l1.cbegin()), 5, 4);
+    assert(i == std::next(l1.begin()));
+    assert(l1 == List(a2, a2+8));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    globalMemCounter.throw_after = 4;
+    int save_count = globalMemCounter.outstanding_new;
+    try
+    {
+        i = l1.insert(i, 5, 5);
+        assert(false);
+    }
+    catch (...)
+    {
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(save_count));
+    assert(l1 == List(a2, a2+8));
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::list<int> >();
+#if TEST_STD_VER >= 11
+    test<std::list<int, min_allocator<int>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_value.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_value.addressof.compile.pass.cpp
new file mode 100644
index 0000000..7a97cfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_value.addressof.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, const value_type& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test(std::list<operator_hijacker>& l) { l.insert(l.begin(), l.front()); }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_value.pass.cpp
new file mode 100644
index 0000000..3e0edef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/insert_iter_value.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// iterator insert(const_iterator position, const value_type& x);
+
+#include <list>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "count_new.h"
+
+template <class List>
+void test()
+{
+    int a1[] = {1, 2, 3};
+    int a2[] = {1, 4, 2, 3};
+    List l1(a1, a1+3);
+    typename List::iterator i = l1.insert(std::next(l1.cbegin()), 4);
+    assert(i == std::next(l1.begin()));
+    assert(l1.size() == 4);
+    assert(std::distance(l1.begin(), l1.end()) == 4);
+    assert(l1 == List(a2, a2+4));
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS) && !defined(DISABLE_NEW_COUNT)
+    globalMemCounter.throw_after = 0;
+    int save_count = globalMemCounter.outstanding_new;
+    try
+    {
+        i = l1.insert(i, 5);
+        assert(false);
+    }
+    catch (...)
+    {
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(save_count));
+    assert(l1 == List(a2, a2+4));
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::list<int> >();
+#if TEST_STD_VER >= 11
+    test<std::list<int, min_allocator<int>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/pop_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/pop_back.pass.cpp
new file mode 100644
index 0000000..c4c88d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/pop_back.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void pop_back();
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a[] = {1, 2, 3};
+    std::list<int> c(a, a+3);
+    c.pop_back();
+    assert(c == std::list<int>(a, a+2));
+    c.pop_back();
+    assert(c == std::list<int>(a, a+1));
+    c.pop_back();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a[] = {1, 2, 3};
+    std::list<int, min_allocator<int>> c(a, a+3);
+    c.pop_back();
+    assert((c == std::list<int, min_allocator<int>>(a, a+2)));
+    c.pop_back();
+    assert((c == std::list<int, min_allocator<int>>(a, a+1)));
+    c.pop_back();
+    assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/pop_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/pop_front.pass.cpp
new file mode 100644
index 0000000..7f20e0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/pop_front.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void pop_front();
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a[] = {1, 2, 3};
+    std::list<int> c(a, a+3);
+    c.pop_front();
+    assert(c == std::list<int>(a+1, a+3));
+    c.pop_front();
+    assert(c == std::list<int>(a+2, a+3));
+    c.pop_front();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a[] = {1, 2, 3};
+    std::list<int, min_allocator<int>> c(a, a+3);
+    c.pop_front();
+    assert((c == std::list<int, min_allocator<int>>(a+1, a+3)));
+    c.pop_front();
+    assert((c == std::list<int, min_allocator<int>>(a+2, a+3)));
+    c.pop_front();
+    assert(c.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back.pass.cpp
new file mode 100644
index 0000000..29f22a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void push_back(const value_type& x);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int> c;
+    for (int i = 0; i < 5; ++i)
+        c.push_back(i);
+    int a[] = {0, 1, 2, 3, 4};
+    assert(c == std::list<int>(a, a+5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::list<int, min_allocator<int>> c;
+    for (int i = 0; i < 5; ++i)
+        c.push_back(i);
+    int a[] = {0, 1, 2, 3, 4};
+    assert((c == std::list<int, min_allocator<int>>(a, a+5)));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp
new file mode 100644
index 0000000..dec63a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_exception_safety.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <list>
+
+// void push_back(const value_type& x);
+
+#include <list>
+#include <cassert>
+#include <exception>
+
+#include "test_macros.h"
+
+// Flag that makes the copy constructor for CMyClass throw an exception
+static bool gCopyConstructorShouldThow = false;
+
+
+class CMyClass {
+    public: CMyClass();
+    public: CMyClass(const CMyClass& iOther);
+    public: ~CMyClass();
+
+    private: int fMagicValue;
+
+    private: static int kStartedConstructionMagicValue;
+    private: static int kFinishedConstructionMagicValue;
+};
+
+// Value for fMagicValue when the constructor has started running, but not yet finished
+int CMyClass::kStartedConstructionMagicValue = 0;
+// Value for fMagicValue when the constructor has finished running
+int CMyClass::kFinishedConstructionMagicValue = 12345;
+
+CMyClass::CMyClass() :
+    fMagicValue(kStartedConstructionMagicValue)
+{
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::CMyClass(const CMyClass& /*iOther*/) :
+    fMagicValue(kStartedConstructionMagicValue)
+{
+    // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
+    if (gCopyConstructorShouldThow) {
+        throw std::exception();
+    }
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::~CMyClass() {
+    // Only instances for which the constructor has finished running should be destructed
+    assert(fMagicValue == kFinishedConstructionMagicValue);
+}
+
+int main(int, char**)
+{
+    CMyClass instance;
+    std::list<CMyClass> vec;
+
+    vec.push_back(instance);
+
+    gCopyConstructorShouldThow = true;
+    try {
+        vec.push_back(instance);
+    }
+    catch (...) {
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_rvalue.pass.cpp
new file mode 100644
index 0000000..8adeb0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_back_rvalue.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// void push_back(value_type&& x);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<MoveOnly> l1;
+    l1.push_back(MoveOnly(1));
+    assert(l1.size() == 1);
+    assert(l1.front() == MoveOnly(1));
+    l1.push_back(MoveOnly(2));
+    assert(l1.size() == 2);
+    assert(l1.front() == MoveOnly(1));
+    assert(l1.back() == MoveOnly(2));
+    }
+    {
+    std::list<MoveOnly, min_allocator<MoveOnly>> l1;
+    l1.push_back(MoveOnly(1));
+    assert(l1.size() == 1);
+    assert(l1.front() == MoveOnly(1));
+    l1.push_back(MoveOnly(2));
+    assert(l1.size() == 2);
+    assert(l1.front() == MoveOnly(1));
+    assert(l1.back() == MoveOnly(2));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front.pass.cpp
new file mode 100644
index 0000000..2b63931
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void push_front(const value_type& x);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<int> c;
+    for (int i = 0; i < 5; ++i)
+        c.push_front(i);
+    int a[] = {4, 3, 2, 1, 0};
+    assert(c == std::list<int>(a, a+5));
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::list<int, min_allocator<int>> c;
+    for (int i = 0; i < 5; ++i)
+        c.push_front(i);
+    int a[] = {4, 3, 2, 1, 0};
+    assert((c == std::list<int, min_allocator<int>>(a, a+5)));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp
new file mode 100644
index 0000000..4ce3b7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_exception_safety.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <list>
+
+// void push_front(const value_type& x);
+
+#include <list>
+#include <cassert>
+#include <exception>
+
+#include "test_macros.h"
+
+// Flag that makes the copy constructor for CMyClass throw an exception
+static bool gCopyConstructorShouldThow = false;
+
+
+class CMyClass {
+    public: CMyClass();
+    public: CMyClass(const CMyClass& iOther);
+    public: ~CMyClass();
+
+    private: int fMagicValue;
+
+    private: static int kStartedConstructionMagicValue;
+    private: static int kFinishedConstructionMagicValue;
+};
+
+// Value for fMagicValue when the constructor has started running, but not yet finished
+int CMyClass::kStartedConstructionMagicValue = 0;
+// Value for fMagicValue when the constructor has finished running
+int CMyClass::kFinishedConstructionMagicValue = 12345;
+
+CMyClass::CMyClass() :
+    fMagicValue(kStartedConstructionMagicValue)
+{
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::CMyClass(const CMyClass& /*iOther*/) :
+    fMagicValue(kStartedConstructionMagicValue)
+{
+    // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
+    if (gCopyConstructorShouldThow) {
+        throw std::exception();
+    }
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::~CMyClass() {
+    // Only instances for which the constructor has finished running should be destructed
+    assert(fMagicValue == kFinishedConstructionMagicValue);
+}
+
+int main(int, char**)
+{
+    CMyClass instance;
+    std::list<CMyClass> vec;
+
+    vec.push_front(instance);
+
+    gCopyConstructorShouldThow = true;
+    try {
+        vec.push_front(instance);
+    }
+    catch (...) {
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_rvalue.pass.cpp
new file mode 100644
index 0000000..b3d0a24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.modifiers/push_front_rvalue.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// void push_front(value_type&& x);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::list<MoveOnly> l1;
+    l1.push_front(MoveOnly(1));
+    assert(l1.size() == 1);
+    assert(l1.front() == MoveOnly(1));
+    l1.push_front(MoveOnly(2));
+    assert(l1.size() == 2);
+    assert(l1.front() == MoveOnly(2));
+    assert(l1.back() == MoveOnly(1));
+    }
+    {
+    std::list<MoveOnly, min_allocator<MoveOnly>> l1;
+    l1.push_front(MoveOnly(1));
+    assert(l1.size() == 1);
+    assert(l1.front() == MoveOnly(1));
+    l1.push_front(MoveOnly(2));
+    assert(l1.size() == 2);
+    assert(l1.front() == MoveOnly(2));
+    assert(l1.back() == MoveOnly(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge.pass.cpp
new file mode 100644
index 0000000..5faa3f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void merge(list& x);
+// If (addressof(x) == this) does nothing; otherwise ...
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {1, 3, 7, 9, 10};
+    int a2[] = {0, 2, 4, 5, 6, 8, 11};
+    int a3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::list<int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    c1.merge(c2);
+    assert(c1 == std::list<int>(a3, a3+sizeof(a3)/sizeof(a3[0])));
+    assert(c2.empty());
+    }
+
+    {
+    int a1[] = {1, 3, 7, 9, 10};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.merge(c1);
+    assert((c1 == std::list<int>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {1, 3, 7, 9, 10};
+    int a2[] = {0, 2, 4, 5, 6, 8, 11};
+    int a3[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+    std::list<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::list<int, min_allocator<int>> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    c1.merge(c2);
+    assert((c1 == std::list<int, min_allocator<int>>(a3, a3+sizeof(a3)/sizeof(a3[0]))));
+    assert(c2.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge_comp.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge_comp.addressof.compile.pass.cpp
new file mode 100644
index 0000000..042e252
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge_comp.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class Compare> void merge(list& x, Compare comp);
+// If (addressof(x) == this) does nothing; otherwise ...
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> l;
+  l.merge(l, std::less<operator_hijacker>());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge_comp.pass.cpp
new file mode 100644
index 0000000..3d4f8cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/merge_comp.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class Compare> void merge(list& x, Compare comp);
+// If (addressof(x) == this) does nothing; otherwise ...
+
+#include <list>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {10, 9, 7, 3, 1};
+    int a2[] = {11, 8, 6, 5, 4, 2, 0};
+    int a3[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::list<int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    c1.merge(c2, std::greater<int>());
+    assert(c1 == std::list<int>(a3, a3+sizeof(a3)/sizeof(a3[0])));
+    assert(c2.empty());
+    }
+    {
+    int a1[] = {10, 9, 7, 3, 1};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.merge(c1, std::greater<int>());
+    assert((c1 == std::list<int>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {10, 9, 7, 3, 1};
+    int a2[] = {11, 8, 6, 5, 4, 2, 0};
+    int a3[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+    std::list<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    std::list<int, min_allocator<int>> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+    c1.merge(c2, std::greater<int>());
+    assert((c1 == std::list<int, min_allocator<int>>(a3, a3+sizeof(a3)/sizeof(a3[0]))));
+    assert(c2.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/remove.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/remove.pass.cpp
new file mode 100644
index 0000000..0bfcb6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/remove.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void      remove(const value_type& value); // pre-c++20
+// size_type remove(const value_type& value); // c++20 and later
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct S {
+  S(int i) : i_(new int(i)) {}
+  S(const S &rhs) : i_(new int(*rhs.i_)) {}
+  S &operator=(const S &rhs) {
+    *i_ = *rhs.i_;
+    return *this;
+  }
+  ~S() {
+    delete i_;
+    i_ = NULL;
+  }
+  bool operator==(const S &rhs) const { return *i_ == *rhs.i_; }
+  int get() const { return *i_; }
+  int *i_;
+};
+
+int main(int, char**) {
+  {
+    int a1[] = {1, 2, 3, 4};
+    int a2[] = {1, 2, 4};
+    typedef std::list<int> L;
+    L c(a1, a1 + 4);
+#if TEST_STD_VER > 17
+    assert(c.remove(3) == 1);
+    ASSERT_SAME_TYPE(L::size_type, decltype(c.remove(3)));
+#else
+    ASSERT_SAME_TYPE(void,         decltype(c.remove(3)));
+    c.remove(3);
+#endif
+
+    assert(c == std::list<int>(a2, a2 + 3));
+  }
+  { // LWG issue #526
+    int a1[] = {1, 2, 1, 3, 5, 8, 11};
+    int a2[] = {2, 3, 5, 8, 11};
+    std::list<int> c(a1, a1 + 7);
+    c.remove(c.front());
+    assert(c == std::list<int>(a2, a2 + 5));
+  }
+  {
+    int a1[] = {1, 2, 1, 3, 5, 8, 11, 1};
+    int a2[] = {2, 3, 5, 8, 11};
+    std::list<S> c;
+    for (int *ip = a1; ip < a1 + 8; ++ip)
+      c.push_back(S(*ip));
+#if TEST_STD_VER > 17
+    assert(c.remove(c.front()) == 3);
+#else
+    c.remove(c.front());
+#endif
+    std::list<S>::const_iterator it = c.begin();
+    for (int *ip = a2; ip < a2 + 5; ++ip, ++it) {
+      assert(it != c.end());
+      assert(*ip == it->get());
+    }
+    assert(it == c.end());
+  }
+  {
+    typedef no_default_allocator<int> Alloc;
+    typedef std::list<int, Alloc> List;
+    int a1[] = {1, 2, 3, 4};
+    int a2[] = {1, 2, 4};
+    List c(a1, a1 + 4, Alloc::create());
+#if TEST_STD_VER > 17
+    assert(c.remove(3) == 1);
+#else
+    c.remove(3);
+#endif
+    assert(c == List(a2, a2 + 3, Alloc::create()));
+  }
+#if TEST_STD_VER >= 11
+  {
+    int a1[] = {1, 2, 3, 4};
+    int a2[] = {1, 2, 4};
+    std::list<int, min_allocator<int>> c(a1, a1 + 4);
+#if TEST_STD_VER > 17
+    assert(c.remove(3) == 1);
+#else
+    c.remove(3);
+#endif
+    assert((c == std::list<int, min_allocator<int>>(a2, a2 + 3)));
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/remove_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/remove_if.pass.cpp
new file mode 100644
index 0000000..b8503ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/remove_if.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class Pred> void      remove_if(Pred pred); // before C++20
+// template <class Pred> size_type remove_if(Pred pred); // c++20 and later
+
+#include <list>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "counting_predicates.h"
+
+bool even(int i)
+{
+    return i % 2 == 0;
+}
+
+bool g(int i)
+{
+    return i < 3;
+}
+
+struct PredLWG526 {
+    PredLWG526 (int i) : i_(i) {};
+    ~PredLWG526() { i_ = -32767; }
+    bool operator() (const PredLWG526 &p) const { return p.i_ == i_; }
+
+    bool operator==(int i) const { return i == i_;}
+    int i_;
+};
+
+typedef unary_counting_predicate<bool(*)(int), int> Predicate;
+
+int main(int, char**)
+{
+    {
+    int a1[] = {1, 2, 3, 4};
+    int a2[] = {3, 4};
+    typedef std::list<int> L;
+    L c(a1, a1+4);
+    Predicate cp(g);
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(L::size_type, decltype(c.remove_if(std::ref(cp))));
+    assert(c.remove_if(std::ref(cp)) == 2);
+#else
+    ASSERT_SAME_TYPE(void, decltype(c.remove_if(std::ref(cp))));
+    c.remove_if(std::ref(cp));
+#endif
+    assert(c == std::list<int>(a2, a2+2));
+    assert(cp.count() == 4);
+    }
+    {
+    int a1[] = {1, 2, 3, 4};
+    int a2[] = {1, 3};
+    std::list<int> c(a1, a1+4);
+    Predicate cp(even);
+#if TEST_STD_VER > 17
+    assert(c.remove_if(std::ref(cp)) == 2);
+#else
+    c.remove_if(std::ref(cp));
+#endif
+    assert(c == std::list<int>(a2, a2+2));
+    assert(cp.count() == 4);
+    }
+    { // LWG issue #526
+    int a1[] = {1, 2, 1, 3, 5, 8, 11};
+    int a2[] = {2, 3, 5, 8, 11};
+    std::list<PredLWG526> c(a1, a1 + 7);
+    c.remove_if(std::ref(c.front()));
+    assert(c.size() == 5);
+    for (size_t i = 0; i < c.size(); ++i)
+    {
+        assert(c.front() == a2[i]);
+        c.pop_front();
+    }
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {1, 2, 3, 4};
+    int a2[] = {3, 4};
+    std::list<int, min_allocator<int>> c(a1, a1+4);
+    Predicate cp(g);
+#if TEST_STD_VER > 17
+    assert(c.remove_if(std::ref(cp)) == 2);
+#else
+    c.remove_if(std::ref(cp));
+#endif
+    assert((c == std::list<int, min_allocator<int>>(a2, a2+2)));
+    assert(cp.count() == 4);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/reverse.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/reverse.pass.cpp
new file mode 100644
index 0000000..6ebd7f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/reverse.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void reverse();
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+    int a2[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.reverse();
+    assert(c1 == std::list<int>(a2, a2+sizeof(a2)/sizeof(a2[0])));
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+    int a2[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+    std::list<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.reverse();
+    assert((c1 == std::list<int, min_allocator<int>>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/sort.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/sort.pass.cpp
new file mode 100644
index 0000000..6349a3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/sort.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void sort();
+
+#include <algorithm>
+#include <list>
+#include <random>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+std::mt19937 randomness;
+
+struct Payload
+{
+    int val;
+    int side;
+    Payload(int v) : val(v), side(0) {}
+    Payload(int v, int s) : val(v), side(s) {}
+    bool operator< (const Payload &rhs) const { return val <  rhs.val;}
+//     bool operator==(const Payload &rhs) const { return val == rhs.val;}
+};
+
+void test_stable(int N)
+{
+    typedef Payload T;
+    typedef std::list<T> C;
+    typedef std::vector<T> V;
+    V v;
+    for (int i = 0; i < N; ++i)
+        v.push_back(Payload(i/2));
+    std::shuffle(v.begin(), v.end(), randomness);
+    for (int i = 0; i < N; ++i)
+        v[i].side = i;
+
+    C c(v.begin(), v.end());
+    c.sort();
+    assert(std::distance(c.begin(), c.end()) == N);
+
+//  Are we sorted?
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(j->val == i/2);
+
+//  Are we stable?
+    for (C::const_iterator it = c.begin(); it != c.end(); ++it)
+    {
+        C::const_iterator next = std::next(it);
+        if (next != c.end() && it->val == next->val)
+            assert(it->side < next->side);
+    }
+}
+
+
+int main(int, char**)
+{
+    {
+    int a1[] = {4, 8, 1, 0, 5, 7, 2, 3, 6, 11, 10, 9};
+    int a2[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.sort();
+    assert(c1 == std::list<int>(a2, a2+sizeof(a2)/sizeof(a2[0])));
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {4, 8, 1, 0, 5, 7, 2, 3, 6, 11, 10, 9};
+    int a2[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};
+    std::list<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.sort();
+    assert((c1 == std::list<int, min_allocator<int>>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+    }
+#endif
+
+    for (int i = 0; i < 40; ++i)
+        test_stable(i);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/sort_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/sort_comp.pass.cpp
new file mode 100644
index 0000000..8345823
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/sort_comp.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class Compare> sort(Compare comp);
+
+#include <list>
+#include <functional>
+#include <algorithm>  // for is_permutation
+#include <random>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+std::mt19937 randomness;
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <typename T>
+struct throwingLess {
+    throwingLess() : num_(1) {}
+    throwingLess(int num) : num_(num) {}
+
+    bool operator() (const T& lhs, const T& rhs) const
+    {
+    if ( --num_ == 0) throw 1;
+    return lhs < rhs;
+    }
+
+    mutable int num_;
+    };
+#endif
+
+
+struct Payload
+{
+    int val;
+    int side;
+    Payload(int v) : val(v), side(0) {}
+    Payload(int v, int s) : val(v), side(s) {}
+    bool operator< (const Payload &rhs) const { return val <  rhs.val;}
+};
+
+bool greater(const Payload &lhs, const Payload &rhs) { return lhs.val >  rhs.val; }
+
+void test_stable(int N)
+{
+    typedef Payload T;
+    typedef std::list<T> C;
+    typedef std::vector<T> V;
+    V v;
+    for (int i = 0; i < N; ++i)
+        v.push_back(Payload(i/2));
+    std::shuffle(v.begin(), v.end(), randomness);
+    for (int i = 0; i < N; ++i)
+        v[i].side = i;
+
+    C c(v.begin(), v.end());
+    c.sort(greater);
+    assert(std::distance(c.begin(), c.end()) == N);
+
+//  Are we sorted?
+    typename C::const_iterator j = c.begin();
+    for (int i = 0; i < N; ++i, ++j)
+        assert(j->val == (N-1-i)/2);
+
+//  Are we stable?
+    for (C::const_iterator it = c.begin(); it != c.end(); ++it)
+    {
+        C::const_iterator next = std::next(it);
+        if (next != c.end() && it->val == next->val)
+            assert(it->side < next->side);
+    }
+}
+
+
+int main(int, char**)
+{
+    {
+    int a1[] = {4, 8, 1, 0, 5, 7, 2, 3, 6, 11, 10, 9};
+    int a2[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+    std::list<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.sort(std::greater<int>());
+    assert(c1 == std::list<int>(a2, a2+sizeof(a2)/sizeof(a2[0])));
+    }
+
+//  Test with throwing comparison; make sure that nothing is lost.
+//  This is (sort of) LWG #2824
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+    int a1[] = {4, 8, 1, 0, 5, 7, 2, 3, 6, 11, 10, 9};
+    const int sz = sizeof(a1)/sizeof(a1[0]);
+    for (int i = 0; i < 10; ++i)
+        {
+        std::list<int> c1(a1, a1 + sz);
+        try
+            {
+            throwingLess<int> comp(i);
+            c1.sort(std::cref(comp));
+            }
+        catch (int) {}
+        assert((c1.size() == sz));
+        assert((std::is_permutation(c1.begin(), c1.end(), a1)));
+        }
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {4, 8, 1, 0, 5, 7, 2, 3, 6, 11, 10, 9};
+    int a2[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};
+    std::list<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+    c1.sort(std::greater<int>());
+    assert((c1 == std::list<int, min_allocator<int>>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+    }
+#endif
+
+    for (int i = 0; i < 40; ++i)
+        test_stable(i);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list.pass.cpp
new file mode 100644
index 0000000..ff0f225
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list.pass.cpp
@@ -0,0 +1,785 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list& x);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    int a1[] = {1, 2, 3};
+    int a2[] = {4, 5, 6};
+    {
+        std::list<int> l1;
+        std::list<int> l2;
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 0);
+        assert(std::distance(l1.begin(), l1.end()) == 0);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+1);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+2);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2;
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2;
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+2);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+2);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2;
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2;
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2;
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2(a2, a2+2);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2(a2, a2+2);
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        std::list<int> l2(a2, a2+2);
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin(), 3), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2;
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 0);
+        assert(std::distance(l1.begin(), l1.end()) == 0);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2;
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2;
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.end(), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2;
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2;
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2;
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 4);
+        assert(std::distance(l1.begin(), l1.end()) == 4);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.begin(), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin()), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin(), 2), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin(), 3), l2);
+        assert(l1.size() == 6);
+        assert(std::distance(l1.begin(), l1.end()) == 6);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        ++i;
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..a6d69c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter.addressof.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list<T,Allocator>& x, iterator i);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> l;
+  l.splice(l.end(), l, l.begin());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter.pass.cpp
new file mode 100644
index 0000000..08b78e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter.pass.cpp
@@ -0,0 +1,339 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list<T,Allocator>& x, iterator i);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    int a1[] = {1, 2, 3};
+    int a2[] = {4, 5, 6};
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+1);
+        l1.splice(l1.end(), l2, l2.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+2);
+        l1.splice(l1.end(), l2, l2.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 1);
+        assert(std::distance(l2.begin(), l2.end()) == 1);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        i = l2.begin();
+        assert(*i == 5);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+2);
+        l1.splice(l1.end(), l2, std::next(l2.begin()));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 1);
+        assert(std::distance(l2.begin(), l2.end()) == 1);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 5);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, l2.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 2);
+        assert(std::distance(l2.begin(), l2.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        i = l2.begin();
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, std::next(l2.begin()));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 2);
+        assert(std::distance(l2.begin(), l2.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 5);
+        i = l2.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int> l1;
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, std::next(l2.begin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 2);
+        assert(std::distance(l2.begin(), l2.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 6);
+        i = l2.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        l1.splice(l1.begin(), l1, l1.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(l1.begin(), l2, l2.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+1);
+        std::list<int> l2(a2, a2+1);
+        l1.splice(std::next(l1.begin()), l2, l2.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        l1.splice(l1.begin(), l1, l1.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        l1.splice(std::next(l1.begin()), l1, l1.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int> l1(a1, a1+2);
+        l1.splice(std::next(l1.begin()), l1, std::next(l1.begin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(l1.end(), l2, l2.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(l1.end(), l2, l2.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 1);
+        assert(std::distance(l2.begin(), l2.end()) == 1);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        i = l2.begin();
+        assert(*i == 5);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+2);
+        l1.splice(l1.end(), l2, std::next(l2.begin()));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 1);
+        assert(std::distance(l2.begin(), l2.end()) == 1);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 5);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, l2.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 2);
+        assert(std::distance(l2.begin(), l2.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        i = l2.begin();
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, std::next(l2.begin()));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 2);
+        assert(std::distance(l2.begin(), l2.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 5);
+        i = l2.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 6);
+    }
+    {
+        std::list<int, min_allocator<int>> l1;
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, std::next(l2.begin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        assert(l2.size() == 2);
+        assert(std::distance(l2.begin(), l2.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 6);
+        i = l2.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 5);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        l1.splice(l1.begin(), l1, l1.begin());
+        assert(l1.size() == 1);
+        assert(std::distance(l1.begin(), l1.end()) == 1);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(l1.begin(), l2, l2.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 4);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+1);
+        std::list<int, min_allocator<int>> l2(a2, a2+1);
+        l1.splice(std::next(l1.begin()), l2, l2.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        assert(l2.size() == 0);
+        assert(std::distance(l2.begin(), l2.end()) == 0);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        l1.splice(l1.begin(), l1, l1.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        l1.splice(std::next(l1.begin()), l1, l1.begin());
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+2);
+        l1.splice(std::next(l1.begin()), l1, std::next(l1.begin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.begin(), l1.end()) == 2);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..e797565
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter_iter.addressof.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list& x, iterator first, iterator last);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> l;
+  l.splice(l.end(), l, l.begin(), l.end());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter_iter.pass.cpp
new file mode 100644
index 0000000..ebfdd50
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/splice_pos_list_iter_iter.pass.cpp
@@ -0,0 +1,219 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void splice(const_iterator position, list& x, iterator first, iterator last);
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    int a1[] = {1, 2, 3};
+    int a2[] = {4, 5, 6};
+    {
+        std::list<int> l1(a1, a1+3);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()), std::next(l1.begin()));
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()), std::next(l1.begin(), 2));
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()), std::next(l1.begin(), 3));
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.begin(), l2, std::next(l2.begin()), l2.end());
+        assert(l1.size() == 5);
+        assert(std::distance(l1.begin(), l1.end()) == 5);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        assert(l2.size() == 1);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin()), l2, std::next(l2.begin()), l2.end());
+        assert(l1.size() == 5);
+        assert(std::distance(l1.begin(), l1.end()) == 5);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        assert(l2.size() == 1);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int> l1(a1, a1+3);
+        std::list<int> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, std::next(l2.begin()), l2.end());
+        assert(l1.size() == 5);
+        assert(std::distance(l1.begin(), l1.end()) == 5);
+        std::list<int>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        assert(l2.size() == 1);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()), std::next(l1.begin()));
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()), std::next(l1.begin(), 2));
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 3);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        l1.splice(l1.begin(), l1, std::next(l1.begin()), std::next(l1.begin(), 3));
+        assert(l1.size() == 3);
+        assert(std::distance(l1.begin(), l1.end()) == 3);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        ++i;
+        assert(*i == 1);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.begin(), l2, std::next(l2.begin()), l2.end());
+        assert(l1.size() == 5);
+        assert(std::distance(l1.begin(), l1.end()) == 5);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        assert(l2.size() == 1);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(std::next(l1.begin()), l2, std::next(l2.begin()), l2.end());
+        assert(l1.size() == 5);
+        assert(std::distance(l1.begin(), l1.end()) == 5);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        assert(l2.size() == 1);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+    {
+        std::list<int, min_allocator<int>> l1(a1, a1+3);
+        std::list<int, min_allocator<int>> l2(a2, a2+3);
+        l1.splice(l1.end(), l2, std::next(l2.begin()), l2.end());
+        assert(l1.size() == 5);
+        assert(std::distance(l1.begin(), l1.end()) == 5);
+        std::list<int, min_allocator<int>>::const_iterator i = l1.begin();
+        assert(*i == 1);
+        ++i;
+        assert(*i == 2);
+        ++i;
+        assert(*i == 3);
+        ++i;
+        assert(*i == 5);
+        ++i;
+        assert(*i == 6);
+        assert(l2.size() == 1);
+        i = l2.begin();
+        assert(*i == 4);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/unique.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/unique.pass.cpp
new file mode 100644
index 0000000..f78f6f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/unique.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// void      unique(); // before C++20
+// size_type unique(); // C++20 and later
+
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
+    int a2[] = {2, 1, 4, 3};
+    typedef std::list<int> L;
+    L c(a1, a1+sizeof(a1)/sizeof(a1[0]));
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(L::size_type, decltype(c.unique()));
+    assert(c.unique() == 5);
+#else
+    ASSERT_SAME_TYPE(void,         decltype(c.unique()));
+    c.unique();
+#endif
+    assert(c == std::list<int>(a2, a2+4));
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
+    int a2[] = {2, 1, 4, 3};
+    std::list<int, min_allocator<int>> c(a1, a1+sizeof(a1)/sizeof(a1[0]));
+#if TEST_STD_VER > 17
+    assert(c.unique() == 5);
+#else
+    c.unique();
+#endif
+    assert((c == std::list<int, min_allocator<int>>(a2, a2+4)));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/unique_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/unique_pred.pass.cpp
new file mode 100644
index 0000000..a33cad8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.ops/unique_pred.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class BinaryPred> void      unique(BinaryPred pred); // before C++20
+// template <class BinaryPred> size_type unique(BinaryPred pred); // C++20 and later
+
+#include <list>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+bool g(int x, int y)
+{
+    return x == y;
+}
+
+struct PredLWG526 {
+    PredLWG526 (int i) : i_(i) {};
+    ~PredLWG526() { i_ = -32767; }
+    bool operator() (const PredLWG526 &lhs, const PredLWG526 &rhs) const { return lhs.i_ == rhs.i_; }
+
+    bool operator==(int i) const { return i == i_;}
+    int i_;
+};
+
+int main(int, char**)
+{
+    {
+    int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
+    int a2[] = {2, 1, 4, 3};
+    typedef std::list<int> L;
+    L c(a1, a1+sizeof(a1)/sizeof(a1[0]));
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(L::size_type, decltype(c.unique(g)));
+    assert(c.unique(g) == 5);
+#else
+    ASSERT_SAME_TYPE(void,         decltype(c.unique(g)));
+    c.unique(g);
+#endif
+    assert(c == std::list<int>(a2, a2+4));
+    }
+
+    { // LWG issue #526
+    int a1[] = {1, 1, 1, 2, 3, 5, 5, 2, 11};
+    int a2[] = {1,       2, 3, 5,    2, 11};
+    std::list<PredLWG526> c(a1, a1 + 9);
+#if TEST_STD_VER > 17
+    assert(c.unique(std::ref(c.front())) == 3);
+#else
+    c.unique(std::ref(c.front()));
+#endif
+    assert(c.size() == 6);
+    for (size_t i = 0; i < c.size(); ++i)
+    {
+        assert(c.front() == a2[i]);
+        c.pop_front();
+    }
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {2, 1, 1, 4, 4, 4, 4, 3, 3};
+    int a2[] = {2, 1, 4, 3};
+    std::list<int, min_allocator<int>> c(a1, a1+sizeof(a1)/sizeof(a1[0]));
+#if TEST_STD_VER > 17
+    assert(c.unique(g) == 5);
+#else
+    c.unique(g);
+#endif
+    assert((c == std::list<int, min_allocator<int>>(a2, a2+4)));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap.addressof.compile.pass.cpp
new file mode 100644
index 0000000..0e15d16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap.addressof.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class T, class Alloc>
+//   void swap(list<T,Alloc>& x, list<T,Alloc>& y);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <list>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::list<operator_hijacker> lo;
+  std::list<operator_hijacker> l;
+  swap(l, lo);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap.pass.cpp
new file mode 100644
index 0000000..6e6eb21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class T, class Alloc>
+//   void swap(list<T,Alloc>& x, list<T,Alloc>& y);
+
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::list<int> c1(a1, a1 + 5);
+        std::list<int> c2(a2, a2 + 7);
+        std::list<int>::iterator it1 = c1.begin();
+        std::list<int>::const_iterator it2 = c2.begin();
+        swap(c1, c2);
+        assert(c1 == std::list<int>(a2, a2 + 7));
+        assert(c2 == std::list<int>(a1, a1 + 5));
+        assert(it1 == c2.begin()); // Iterators remain valid
+        assert(it2 == c1.begin()); // Iterators remain valid
+    }
+    {
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::list<int> c1;
+        std::list<int> c2(a2, a2 + 7);
+        swap(c1, c2);
+        assert(c1 == std::list<int>(a2, a2 + 7));
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        std::list<int> c1(a1, a1 + 5);
+        std::list<int> c2;
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c2 == std::list<int>(a1, a1 + 5));
+    }
+    {
+        std::list<int> c1;
+        std::list<int> c2;
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef test_allocator<int> A;
+        std::list<int, A> c1(a1, a1 + 5, A(1));
+        std::list<int, A> c2(a2, a2 + 7, A(1));
+        swap(c1, c2);
+        assert((c1 == std::list<int, A>(a2, a2 + 7)));
+        assert(c1.get_allocator() == A(1));
+        assert((c2 == std::list<int, A>(a1, a1 + 5)));
+        assert(c2.get_allocator() == A(1));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef other_allocator<int> A;
+        std::list<int, A> c1(a1, a1 + 5, A(1));
+        std::list<int, A> c2(a2, a2 + 7, A(2));
+        swap(c1, c2);
+        assert((c1 == std::list<int, A>(a2, a2 + 7)));
+        assert(c1.get_allocator() == A(2));
+        assert((c2 == std::list<int, A>(a1, a1 + 5)));
+        assert(c2.get_allocator() == A(1));
+    }
+#if TEST_STD_VER >= 11
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::list<int, min_allocator<int>> c1(a1, a1 + 5);
+        std::list<int, min_allocator<int>> c2(a2, a2 + 7);
+        swap(c1, c2);
+        assert((c1 == std::list<int, min_allocator<int>>(a2, a2 + 7)));
+        assert((c2 == std::list<int, min_allocator<int>>(a1, a1 + 5)));
+    }
+    {
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::list<int, min_allocator<int>> c1;
+        std::list<int, min_allocator<int>> c2(a2, a2 + 7);
+        swap(c1, c2);
+        assert((c1 == std::list<int, min_allocator<int>>(a2, a2 + 7)));
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        std::list<int, min_allocator<int>> c1(a1, a1 + 5);
+        std::list<int, min_allocator<int>> c2;
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert((c2 == std::list<int, min_allocator<int>>(a1, a1 + 5)));
+    }
+    {
+        std::list<int, min_allocator<int>> c1;
+        std::list<int, min_allocator<int>> c2;
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef min_allocator<int> A;
+        std::list<int, A> c1(a1, a1 + 5, A());
+        std::list<int, A> c2(a2, a2 + 7, A());
+        swap(c1, c2);
+        assert((c1 == std::list<int, A>(a2, a2 + 7)));
+        assert(c1.get_allocator() == A());
+        assert((c2 == std::list<int, A>(a1, a1 + 5)));
+        assert(c2.get_allocator() == A());
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..228d3ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/list.special/swap_noexcept.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <list>
+
+// void swap(list& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value);
+
+// This tests a conforming extension
+
+#include <list>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::list<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::list<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::list<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::list<MoveOnly, some_alloc<MoveOnly>> C;
+#if TEST_STD_VER >= 14
+    //  In C++14, if POCS is set, swapping the allocator is required not to throw
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#else
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif
+    }
+#if TEST_STD_VER >= 14
+    {
+        typedef std::list<MoveOnly, some_alloc2<MoveOnly>> C;
+    //  if the allocators are always equal, then the swap can be noexcept
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..20484ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// list
+
+#include <list>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::list<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(!std::ranges::random_access_range<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(!std::ranges::random_access_range<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/list/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/types.pass.cpp
new file mode 100644
index 0000000..0c1ca27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/list/types.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <list>
+
+// template <class T, class Alloc = allocator<T> >
+// class list
+// {
+// public:
+//
+//     // types:
+//     typedef T value_type;
+//     typedef Alloc allocator_type;
+//     typedef typename allocator_type::reference reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef typename allocator_type::pointer pointer;
+//     typedef typename allocator_type::const_pointer const_pointer;
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <list>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct A { std::list<A> v; }; // incomplete type support
+
+int main(int, char**)
+{
+    {
+    typedef std::list<int> C;
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::allocator_type, std::allocator<int> >::value), "");
+    static_assert((std::is_same<C::reference, std::allocator<int>::reference>::value), "");
+    static_assert((std::is_same<C::const_reference, std::allocator<int>::const_reference>::value), "");
+    static_assert((std::is_same<C::pointer, std::allocator<int>::pointer>::value), "");
+    static_assert((std::is_same<C::const_pointer, std::allocator<int>::const_pointer>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    typedef std::list<int, min_allocator<int>> C;
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<int> >::value), "");
+    static_assert((std::is_same<C::reference, int&>::value), "");
+    static_assert((std::is_same<C::const_reference, const int&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<int>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const int>>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_copy.pass.cpp
new file mode 100644
index 0000000..c4866ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_copy.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector& operator=(const vector& c);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool, test_allocator<bool> > l(3, true, test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > l2(l, test_allocator<bool>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<bool>(3));
+    }
+    {
+        std::vector<bool, other_allocator<bool> > l(3, true, other_allocator<bool>(5));
+        std::vector<bool, other_allocator<bool> > l2(l, other_allocator<bool>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<bool>(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool> > l(3, true, min_allocator<bool>());
+        std::vector<bool, min_allocator<bool> > l2(l, min_allocator<bool>());
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<bool>());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..0f5ec90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_initializer_list.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// void assign(initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<bool> d;
+    d.assign({true, false, false, true});
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+    {
+    std::vector<bool, min_allocator<bool>> d;
+    d.assign({true, false, false, true});
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_move.pass.cpp
new file mode 100644
index 0000000..10271ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/assign_move.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector& operator=(vector&& c);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool, test_allocator<bool> > l(test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > lo(test_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, test_allocator<bool> > l2(test_allocator<bool>(5));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        LIBCPP_ASSERT(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+    }
+    {
+        std::vector<bool, test_allocator<bool> > l(test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > lo(test_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, test_allocator<bool> > l2(test_allocator<bool>(6));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == test_allocator<bool>(6));
+    }
+    {
+        std::vector<bool, other_allocator<bool> > l(other_allocator<bool>(5));
+        std::vector<bool, other_allocator<bool> > lo(other_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, other_allocator<bool> > l2(other_allocator<bool>(6));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+    }
+    {
+        std::vector<bool, min_allocator<bool> > l(min_allocator<bool>{});
+        std::vector<bool, min_allocator<bool> > lo(min_allocator<bool>{});
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, min_allocator<bool> > l2(min_allocator<bool>{});
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/capacity.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/capacity.pass.cpp
new file mode 100644
index 0000000..986453a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/capacity.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// size_type capacity() const;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v;
+        assert(v.capacity() == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        assert(v.capacity() >= 100);
+        v.push_back(0);
+        assert(v.capacity() >= 101);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool>> v;
+        assert(v.capacity() == 0);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        assert(v.capacity() >= 100);
+        v.push_back(0);
+        assert(v.capacity() >= 101);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/compare.pass.cpp
new file mode 100644
index 0000000..0f81802
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/compare.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// bool operator==( const vector& lhs, const vector& rhs );
+// bool operator!=( const vector& lhs, const vector& rhs );
+// bool operator< ( const vector& lhs, const vector& rhs );
+// bool operator<=( const vector& lhs, const vector& rhs );
+// bool operator> ( const vector& lhs, const vector& rhs );
+// bool operator>=( const vector& lhs, const vector& rhs );
+
+#include <vector>
+#include <cassert>
+
+#include "test_comparisons.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    typedef std::vector<bool> VB;
+    {
+        const VB v1, v2;
+        assert(testComparisons(v1, v2, true, false));
+    }
+    {
+        const VB v1(1, true);
+        const VB v2(1, true);
+        assert(testComparisons(v1, v2, true, false));
+    }
+    {
+        const VB v1(1, false);
+        const VB v2(1, true);
+        assert(testComparisons(v1, v2, false, true));
+    }
+    {
+        const VB v1, v2(1, true);
+        assert(testComparisons(v1, v2, false, true));
+    }
+    {
+        bool items1[3] = {false, true, false};
+        bool items2[3] = {false, true, true};
+        const VB v1(items1, items1 + 3);
+        const VB v2(items2, items2 + 3);
+        assert(testComparisons(v1, v2, false, true));
+    }
+    {
+        bool items1[3] = {false, false, false};
+        bool items2[3] = {false, true, false};
+        const VB v1(items1, items1 + 3);
+        const VB v2(items2, items2 + 3);
+        assert(testComparisons(v1, v2, false, true));
+    }
+    {
+        bool items1[2] = {false, true};
+        bool items2[3] = {false, true, false};
+        const VB v1(items1, items1 + 2);
+        const VB v2(items2, items2 + 3);
+        assert(testComparisons(v1, v2, false, true));
+    }
+    {
+        bool items[3] = {false, true, false};
+        const VB v1(items, items + 3);
+        const VB v2(1, true);
+        assert(testComparisons(v1, v2, false, true));
+    }
+    {
+        assert( (std::vector<bool>() == std::vector<bool>()));
+        assert(!(std::vector<bool>() != std::vector<bool>()));
+        assert(!(std::vector<bool>() < std::vector<bool>()));
+        assert( (std::vector<bool>() <= std::vector<bool>()));
+        assert(!(std::vector<bool>() > std::vector<bool>()));
+        assert( (std::vector<bool>() >= std::vector<bool>()));
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/const_reference.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/const_reference.pass.cpp
new file mode 100644
index 0000000..c2cb7f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/const_reference.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  using CRefT = std::vector<bool>::const_reference;
+#if !defined(_LIBCPP_VERSION) || defined(_LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL)
+  ASSERT_SAME_TYPE(CRefT, bool);
+#else
+  ASSERT_SAME_TYPE(CRefT, std::__bit_const_reference<std::vector<bool> >);
+  std::vector<bool> vec;
+  vec.push_back(true);
+  CRefT ref = vec[0];
+  assert(ref);
+  vec[0] = false;
+  assert(!ref);
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_default.pass.cpp
new file mode 100644
index 0000000..8f07524
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_default.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// vector<bool>
+
+// vector();
+// vector(const Alloc&);
+
+// This tests a conforming extension
+// For vector<>, this was added to the standard by N4258,
+//   but vector<bool> was not changed.
+
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+#if TEST_STD_VER > 14
+    LIBCPP_STATIC_ASSERT((noexcept(C{})), "" );
+#elif TEST_STD_VER >= 11
+    LIBCPP_STATIC_ASSERT((noexcept(C()) == noexcept(typename C::allocator_type())), "" );
+#endif
+    C c;
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.empty());
+    assert(c.get_allocator() == typename C::allocator_type());
+#if TEST_STD_VER >= 11
+    C c1 = {};
+    LIBCPP_ASSERT(c1.__invariants());
+    assert(c1.empty());
+    assert(c1.get_allocator() == typename C::allocator_type());
+#endif
+}
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test1(const typename C::allocator_type& a)
+{
+#if TEST_STD_VER > 14
+    LIBCPP_STATIC_ASSERT((noexcept(C{typename C::allocator_type{}})), "" );
+#elif TEST_STD_VER >= 11
+    LIBCPP_STATIC_ASSERT((noexcept(C(typename C::allocator_type())) == std::is_nothrow_copy_constructible<typename C::allocator_type>::value), "" );
+#endif
+    C c(a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.empty());
+    assert(c.get_allocator() == a);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    test0<std::vector<bool> >();
+    test1<std::vector<bool, test_allocator<bool> > >(test_allocator<bool>(3));
+    }
+#if TEST_STD_VER >= 11
+    {
+    test0<std::vector<bool, min_allocator<bool>> >();
+    test1<std::vector<bool, min_allocator<bool> > >(min_allocator<bool>());
+    }
+    {
+    test0<std::vector<bool, explicit_allocator<bool>> >();
+    test1<std::vector<bool, explicit_allocator<bool> > >(explicit_allocator<bool>());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_iter_iter.pass.cpp
new file mode 100644
index 0000000..2f520d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_iter_iter.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// template <class InputIter> vector(InputIter first, InputIter last);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C, class Iterator>
+TEST_CONSTEXPR_CXX20 void test(Iterator first, Iterator last)
+{
+    C c(first, last);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == static_cast<std::size_t>(std::distance(first, last)));
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i, ++first)
+        assert(*i == *first);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    bool a[] = {0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0};
+    bool* an = a + sizeof(a)/sizeof(a[0]);
+    test<std::vector<bool> >(cpp17_input_iterator<const bool*>(a), cpp17_input_iterator<const bool*>(an));
+    test<std::vector<bool> >(forward_iterator<const bool*>(a), forward_iterator<const bool*>(an));
+    test<std::vector<bool> >(bidirectional_iterator<const bool*>(a), bidirectional_iterator<const bool*>(an));
+    test<std::vector<bool> >(random_access_iterator<const bool*>(a), random_access_iterator<const bool*>(an));
+    test<std::vector<bool> >(a, an);
+#if TEST_STD_VER >= 11
+    test<std::vector<bool, min_allocator<bool>> >(cpp17_input_iterator<const bool*>(a), cpp17_input_iterator<const bool*>(an));
+    test<std::vector<bool, min_allocator<bool>> >(forward_iterator<const bool*>(a), forward_iterator<const bool*>(an));
+    test<std::vector<bool, min_allocator<bool>> >(bidirectional_iterator<const bool*>(a), bidirectional_iterator<const bool*>(an));
+    test<std::vector<bool, min_allocator<bool>> >(random_access_iterator<const bool*>(a), random_access_iterator<const bool*>(an));
+    test<std::vector<bool, min_allocator<bool>> >(a, an);
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..57e1cb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_iter_iter_alloc.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// template <class InputIter> vector(InputIter first, InputIter last,
+//                                   const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class C, class Iterator>
+TEST_CONSTEXPR_CXX20 void test(Iterator first, Iterator last, const typename C::allocator_type& a)
+{
+    C c(first, last, a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == static_cast<std::size_t>(std::distance(first, last)));
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i, ++first)
+        assert(*i == *first);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    bool a[] = {0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0};
+    bool* an = a + sizeof(a)/sizeof(a[0]);
+    {
+    std::allocator<bool> alloc;
+    test<std::vector<bool> >(cpp17_input_iterator<const bool*>(a), cpp17_input_iterator<const bool*>(an), alloc);
+    test<std::vector<bool> >(forward_iterator<const bool*>(a), forward_iterator<const bool*>(an), alloc);
+    test<std::vector<bool> >(bidirectional_iterator<const bool*>(a), bidirectional_iterator<const bool*>(an), alloc);
+    test<std::vector<bool> >(random_access_iterator<const bool*>(a), random_access_iterator<const bool*>(an), alloc);
+    test<std::vector<bool> >(a, an, alloc);
+    }
+#if TEST_STD_VER >= 11
+    {
+    min_allocator<bool> alloc;
+    test<std::vector<bool, min_allocator<bool>> >(cpp17_input_iterator<const bool*>(a), cpp17_input_iterator<const bool*>(an), alloc);
+    test<std::vector<bool, min_allocator<bool>> >(forward_iterator<const bool*>(a), forward_iterator<const bool*>(an), alloc);
+    test<std::vector<bool, min_allocator<bool>> >(bidirectional_iterator<const bool*>(a), bidirectional_iterator<const bool*>(an), alloc);
+    test<std::vector<bool, min_allocator<bool>> >(random_access_iterator<const bool*>(a), random_access_iterator<const bool*>(an), alloc);
+    test<std::vector<bool, min_allocator<bool>> >(a, an, alloc);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size.pass.cpp
new file mode 100644
index 0000000..bcc5a16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// explicit vector(size_type n);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test2(typename C::size_type n,
+                                typename C::allocator_type const& a = typename C::allocator_type ())
+{
+#if TEST_STD_VER >= 14
+    C c(n, a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == n);
+    assert(c.get_allocator() == a);
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+        assert(*i == typename C::value_type());
+#else
+  ((void)n);
+  ((void)a);
+#endif
+}
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test1(typename C::size_type n)
+{
+    C c(n);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == n);
+    assert(c.get_allocator() == typename C::allocator_type());
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+        assert(*i == typename C::value_type());
+}
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test(typename C::size_type n)
+{
+    test1<C> ( n );
+    test2<C> ( n );
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test<std::vector<bool> >(50);
+#if TEST_STD_VER >= 11
+    test<std::vector<bool, min_allocator<bool>> >(50);
+    test2<std::vector<bool, test_allocator<bool>> >( 100, test_allocator<bool>(23));
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size_value.pass.cpp
new file mode 100644
index 0000000..629e8ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size_value.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// vector(size_type n, const value_type& x);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test(typename C::size_type n, const typename C::value_type& x)
+{
+    C c(n, x);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == n);
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+        assert(*i == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test<std::vector<bool> >(50, true);
+#if TEST_STD_VER >= 11
+    test<std::vector<bool, min_allocator<bool>> >(50, true);
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size_value_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size_value_alloc.pass.cpp
new file mode 100644
index 0000000..94a44ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/construct_size_value_alloc.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// vector(size_type n, const value_type& x, const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test(typename C::size_type n,
+                                    const typename C::value_type& x,
+                                    const typename C::allocator_type& a)
+{
+    C c(n, x, a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(a == c.get_allocator());
+    assert(c.size() == n);
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+        assert(*i == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test<std::vector<bool> >(50, true, std::allocator<bool>());
+#if TEST_STD_VER >= 11
+    test<std::vector<bool, min_allocator<bool>> >(50, true, min_allocator<bool>());
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/copy.pass.cpp
new file mode 100644
index 0000000..bfd37e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/copy.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// vector(const vector& v);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test(const C& x)
+{
+    typename C::size_type s = x.size();
+    C c(x);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == s);
+    assert(c == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        bool a[] = {0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0};
+        bool* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<bool>(a, an));
+    }
+    {
+        std::vector<bool, test_allocator<bool> > v(3, true, test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > v2 = v;
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, other_allocator<bool> > v(3, true, other_allocator<bool>(5));
+        std::vector<bool, other_allocator<bool> > v2 = v;
+        assert(v2 == v);
+        assert(v2.get_allocator() == other_allocator<bool>(-2));
+    }
+    {
+        bool a[] = {0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0};
+        bool* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<bool, min_allocator<bool>>(a, an));
+    }
+    {
+        std::vector<bool, min_allocator<bool> > v(3, true, min_allocator<bool>());
+        std::vector<bool, min_allocator<bool> > v2 = v;
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/copy_alloc.pass.cpp
new file mode 100644
index 0000000..468bf5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/copy_alloc.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(const vector& v, const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test(const C& x, const typename C::allocator_type& a)
+{
+    typename C::size_type s = x.size();
+    C c(x, a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == s);
+    assert(c == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        bool a[] = {0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0};
+        bool* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<bool>(a, an), std::allocator<bool>());
+    }
+    {
+        std::vector<bool, test_allocator<bool> > l(3, true, test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > l2(l, test_allocator<bool>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<bool>(3));
+    }
+    {
+        std::vector<bool, other_allocator<bool> > l(3, true, other_allocator<bool>(5));
+        std::vector<bool, other_allocator<bool> > l2(l, other_allocator<bool>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<bool>(3));
+    }
+#if TEST_STD_VER >= 11
+    {
+        bool a[] = {0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0};
+        bool* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<bool, min_allocator<bool>>(a, an), min_allocator<bool>());
+    }
+    {
+        std::vector<bool, min_allocator<bool> > l(3, true, min_allocator<bool>());
+        std::vector<bool, min_allocator<bool> > l2(l, min_allocator<bool>());
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<bool>());
+    }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp
new file mode 100644
index 0000000..df3fc14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/ctor_exceptions.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// (bug report: https://llvm.org/PR58392)
+// Check that vector<bool> constructors don't leak memory when an operation inside the constructor throws an exception
+
+#include <cstddef>
+#include <type_traits>
+#include <vector>
+
+#include "count_new.h"
+#include "test_iterators.h"
+
+template <class T>
+struct Allocator {
+  using value_type      = T;
+  using is_always_equal = std::false_type;
+
+  template <class U>
+  Allocator(const Allocator<U>&) {}
+
+  Allocator(bool should_throw = true) {
+    if (should_throw)
+      throw 0;
+  }
+
+  T* allocate(std::size_t n) { return std::allocator<T>().allocate(n); }
+  void deallocate(T* ptr, std::size_t n) { std::allocator<T>().deallocate(ptr, n); }
+
+  template <class U>
+  friend bool operator==(const Allocator&, const Allocator<U>&) { return true; }
+};
+
+template <class IterCat>
+struct Iterator {
+  using iterator_category = IterCat;
+  using difference_type   = std::ptrdiff_t;
+  using value_type        = bool;
+  using reference         = bool&;
+  using pointer           = bool*;
+
+  int i_;
+  bool b_ = true;
+  Iterator(int i = 0) : i_(i) {}
+  bool& operator*() {
+    if (i_ == 1)
+      throw 1;
+    return b_;
+  }
+
+  friend bool operator==(const Iterator& lhs, const Iterator& rhs) { return lhs.i_ == rhs.i_; }
+
+  friend bool operator!=(const Iterator& lhs, const Iterator& rhs) { return lhs.i_ != rhs.i_; }
+
+  Iterator& operator++() {
+    ++i_;
+    return *this;
+  }
+
+  Iterator operator++(int) {
+    auto tmp = *this;
+    ++i_;
+    return tmp;
+  }
+};
+
+void check_new_delete_called() {
+  assert(globalMemCounter.new_called == globalMemCounter.delete_called);
+  assert(globalMemCounter.new_array_called == globalMemCounter.delete_array_called);
+  assert(globalMemCounter.aligned_new_called == globalMemCounter.aligned_delete_called);
+  assert(globalMemCounter.aligned_new_array_called == globalMemCounter.aligned_delete_array_called);
+}
+
+int main(int, char**) {
+  using AllocVec = std::vector<bool, Allocator<bool> >;
+
+#if TEST_STD_VER >= 14
+  try { // Throw in vector(size_type, const allocator_type&) from allocator
+    Allocator<bool> alloc(false);
+    AllocVec get_alloc(0, alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+#endif  // TEST_STD_VER >= 14
+
+  try { // Throw in vector(InputIterator, InputIterator) from input iterator
+    std::vector<bool> vec((Iterator<std::input_iterator_tag>()), Iterator<std::input_iterator_tag>(2));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator) from forward iterator
+    std::vector<bool> vec((Iterator<std::forward_iterator_tag>()), Iterator<std::forward_iterator_tag>(2));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator) from allocator
+    int a[] = {1, 2};
+    AllocVec vec(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + 2));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from input iterator
+    std::allocator<bool> alloc;
+    std::vector<bool> vec(Iterator<std::input_iterator_tag>(), Iterator<std::input_iterator_tag>(2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from forward iterator
+    std::allocator<bool> alloc;
+    std::vector<bool> vec(Iterator<std::forward_iterator_tag>(), Iterator<std::forward_iterator_tag>(2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from allocator
+    bool a[] = {true, false};
+    Allocator<bool> alloc(false);
+    AllocVec vec(cpp17_input_iterator<bool*>(a), cpp17_input_iterator<bool*>(a + 2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from allocator
+    bool a[] = {true, false};
+    Allocator<bool> alloc(false);
+    AllocVec vec(forward_iterator<bool*>(a), forward_iterator<bool*>(a + 2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp
new file mode 100644
index 0000000..a43b648
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/default_noexcept.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector<bool>()
+//        noexcept(is_nothrow_default_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+// For vector<>, this was added to the standard by N4258,
+//   but vector<bool> was not changed.
+
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, test_allocator<bool>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, other_allocator<bool>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..569a95f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/dtor_noexcept.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// ~vector<bool>() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    ~some_alloc() noexcept(false);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::vector<bool> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, test_allocator<bool>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, other_allocator<bool>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/emplace.pass.cpp
new file mode 100644
index 0000000..134af5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/emplace.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <vector>
+//  vector<bool>
+
+// template <class... Args> iterator emplace(const_iterator pos, Args&&... args);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef std::vector<bool> C;
+        C c;
+
+        C::iterator i = c.emplace(c.cbegin());
+        assert(i == c.begin());
+        assert(c.size() == 1);
+        assert(c.front() == false);
+
+        i = c.emplace(c.cend(), true);
+        assert(i == c.end()-1);
+        assert(c.size() == 2);
+        assert(c.front() == false);
+        assert(c.back() == true);
+
+        i = c.emplace(c.cbegin()+1, true);
+        assert(i == c.begin()+1);
+        assert(c.size() == 3);
+        assert(c.front() == false);
+        assert(c[1] == true);
+        assert(c.back() == true);
+    }
+    {
+        typedef std::vector<bool, min_allocator<bool>> C;
+        C c;
+
+        C::iterator i = c.emplace(c.cbegin());
+        assert(i == c.begin());
+        assert(c.size() == 1);
+        assert(c.front() == false);
+
+        i = c.emplace(c.cend(), true);
+        assert(i == c.end()-1);
+        assert(c.size() == 2);
+        assert(c.front() == false);
+        assert(c.back() == true);
+
+        i = c.emplace(c.cbegin()+1, true);
+        assert(i == c.begin()+1);
+        assert(c.size() == 3);
+        assert(c.size() == 3);
+        assert(c.front() == false);
+        assert(c[1] == true);
+        assert(c.back() == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/emplace_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/emplace_back.pass.cpp
new file mode 100644
index 0000000..fccf6e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/emplace_back.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <vector>
+//  vector.bool
+
+// template <class... Args> reference emplace_back(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef std::vector<bool> C;
+        C c;
+#if TEST_STD_VER > 14
+        typedef C::reference Ref;
+        Ref r1 = c.emplace_back();
+        assert(c.size() == 1);
+        assert(c.front() == false);
+        r1 = true;
+        assert(c.front() == true);
+        r1 = false;
+        Ref r2 = c.emplace_back(true);
+        assert(c.size() == 2);
+        assert(c.front() == false);
+        assert(c.back() == true);
+        r2 = false;
+        assert(c.back() == false);
+        r2 = true;
+#else
+        c.emplace_back();
+        assert(c.size() == 1);
+        assert(c.front() == false);
+        c.emplace_back(true);
+        assert(c.size() == 2);
+        assert(c.front() == false);
+        assert(c.back() == true);
+#endif
+        c.emplace_back(true);
+        assert(c.size() == 3);
+        assert(c.front() == false);
+        assert(c[1] == true);
+        assert(c.back() == true);
+    }
+    {
+        typedef std::vector<bool, min_allocator<bool>> C;
+        C c;
+
+#if TEST_STD_VER > 14
+        typedef C::reference Ref;
+        Ref r1 = c.emplace_back();
+        assert(c.size() == 1);
+        assert(c.front() == false);
+        r1 = true;
+        assert(c.front() == true);
+        r1 = false;
+        Ref r2 = c.emplace_back(true);
+        assert(c.size() == 2);
+        assert(c.front() == false);
+        assert(c.back() == true);
+        r2 = false;
+        assert(c.back() == false);
+        r2 = true;
+#else
+        c.emplace_back();
+        assert(c.size() == 1);
+        assert(c.front() == false);
+        c.emplace_back(true);
+        assert(c.size() == 2);
+        assert(c.front() == false);
+        assert(c.back() == true);
+#endif
+        c.emplace_back(true);
+        assert(c.size() == 3);
+        assert(c.front() == false);
+        assert(c[1] == true);
+        assert(c.back() == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/empty.pass.cpp
new file mode 100644
index 0000000..ec4d2f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/empty.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// bool empty() const noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    typedef std::vector<bool> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(false);
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<bool, min_allocator<bool>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(false);
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/empty.verify.cpp
new file mode 100644
index 0000000..06c968e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::vector<bool> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/enabled_hash.pass.cpp
new file mode 100644
index 0000000..d89984a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/enabled_hash.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// Test that <vector> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <vector>
+
+#include "poisoned_hash_helper.h"
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_hash_enabled_for_type<std::vector<bool> >();
+  test_hash_enabled_for_type<std::vector<bool, min_allocator<bool>>>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/erase_iter.pass.cpp
new file mode 100644
index 0000000..42d1e76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/erase_iter.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// iterator erase(const_iterator position);
+
+#include <vector>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    bool a1[] = {1, 0, 1};
+    {
+    std::vector<bool> l1(a1, a1+3);
+    std::vector<bool>::const_iterator i = l1.begin();
+    ++i;
+    std::vector<bool>::iterator j = l1.erase(i);
+    assert(l1.size() == 2);
+    assert(std::distance(l1.begin(), l1.end()) == 2);
+    assert(*j == true);
+    assert(*l1.begin() == 1);
+    assert(*std::next(l1.begin()) == true);
+    j = l1.erase(j);
+    assert(j == l1.end());
+    assert(l1.size() == 1);
+    assert(std::distance(l1.begin(), l1.end()) == 1);
+    assert(*l1.begin() == true);
+    j = l1.erase(l1.begin());
+    assert(j == l1.end());
+    assert(l1.size() == 0);
+    assert(std::distance(l1.begin(), l1.end()) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    std::vector<bool, min_allocator<bool>> l1(a1, a1+3);
+    std::vector<bool, min_allocator<bool>>::const_iterator i = l1.begin();
+    ++i;
+    std::vector<bool, min_allocator<bool>>::iterator j = l1.erase(i);
+    assert(l1.size() == 2);
+    assert(std::distance(l1.begin(), l1.end()) == 2);
+    assert(*j == true);
+    assert(*l1.begin() == 1);
+    assert(*std::next(l1.begin()) == true);
+    j = l1.erase(j);
+    assert(j == l1.end());
+    assert(l1.size() == 1);
+    assert(std::distance(l1.begin(), l1.end()) == 1);
+    assert(*l1.begin() == true);
+    j = l1.erase(l1.begin());
+    assert(j == l1.end());
+    assert(l1.size() == 0);
+    assert(std::distance(l1.begin(), l1.end()) == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..c19ce99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/erase_iter_iter.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <vector>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    bool a1[] = {1, 0, 1};
+    {
+        std::vector<bool> l1(a1, a1+3);
+        std::vector<bool>::iterator i = l1.erase(l1.cbegin(), l1.cbegin());
+        assert(l1.size() == 3);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 3);
+        assert(i == l1.begin());
+    }
+    {
+        std::vector<bool> l1(a1, a1+3);
+        std::vector<bool>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 2);
+        assert(i == l1.begin());
+        assert(l1 == std::vector<bool>(a1+1, a1+3));
+    }
+    {
+        std::vector<bool> l1(a1, a1+3);
+        std::vector<bool>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 1);
+        assert(i == l1.begin());
+        assert(l1 == std::vector<bool>(a1+2, a1+3));
+    }
+    {
+        std::vector<bool> l1(a1, a1+3);
+        std::vector<bool>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 3));
+        assert(l1.size() == 0);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 0);
+        assert(i == l1.begin());
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool>> l1(a1, a1+3);
+        std::vector<bool, min_allocator<bool>>::iterator i = l1.erase(l1.cbegin(), l1.cbegin());
+        assert(l1.size() == 3);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 3);
+        assert(i == l1.begin());
+    }
+    {
+        std::vector<bool, min_allocator<bool>> l1(a1, a1+3);
+        std::vector<bool, min_allocator<bool>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 2);
+        assert(i == l1.begin());
+        assert((l1 == std::vector<bool, min_allocator<bool>>(a1+1, a1+3)));
+    }
+    {
+        std::vector<bool, min_allocator<bool>> l1(a1, a1+3);
+        std::vector<bool, min_allocator<bool>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 1);
+        assert(i == l1.begin());
+        assert((l1 == std::vector<bool, min_allocator<bool>>(a1+2, a1+3)));
+    }
+    {
+        std::vector<bool, min_allocator<bool>> l1(a1, a1+3);
+        std::vector<bool, min_allocator<bool>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 3));
+        assert(l1.size() == 0);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 0);
+        assert(i == l1.begin());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/find.pass.cpp
new file mode 100644
index 0000000..73cca82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/find.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// std::find with vector<bool>::iterator
+
+// https://llvm.org/PR16816
+
+#include <vector>
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        for (unsigned i = 1; i < 256; ++i)
+        {
+            std::vector<bool> b(i,true);
+            std::vector<bool>::iterator j = std::find(b.begin()+1, b.end(), false);
+            assert(static_cast<std::size_t>(j-b.begin()) == i);
+            assert(b.end() == j);
+        }
+    }
+    {
+        for (unsigned i = 1; i < 256; ++i)
+        {
+            std::vector<bool> b(i,false);
+            std::vector<bool>::iterator j = std::find(b.begin()+1, b.end(), true);
+            assert(static_cast<std::size_t>(j-b.begin()) == i);
+            assert(b.end() == j);
+        }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/get_allocator.pass.cpp
new file mode 100644
index 0000000..a088cd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/get_allocator.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector<bool>
+
+// allocator_type get_allocator() const
+
+#include <vector>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    {
+        std::allocator<bool> alloc;
+        const std::vector<bool> vb(alloc);
+        assert(vb.get_allocator() == alloc);
+    }
+    {
+        other_allocator<bool> alloc(1);
+        const std::vector<bool, other_allocator<bool> > vb(alloc);
+        assert(vb.get_allocator() == alloc);
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/initializer_list.pass.cpp
new file mode 100644
index 0000000..9b13922
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/initializer_list.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector(initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<bool> d = {true, false, false, true};
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+    {
+    std::vector<bool, min_allocator<bool>> d = {true, false, false, true};
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/initializer_list_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/initializer_list_alloc.pass.cpp
new file mode 100644
index 0000000..0d5dd8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/initializer_list_alloc.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector(initializer_list<value_type> il, const Allocator& a = allocator_type());
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<bool, test_allocator<bool>> d({true, false, false, true}, test_allocator<bool>(3));
+    assert(d.get_allocator() == test_allocator<bool>(3));
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+    {
+    std::vector<bool, min_allocator<bool>> d({true, false, false, true}, min_allocator<bool>());
+    assert(d.get_allocator() == min_allocator<bool>());
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_initializer_list.pass.cpp
new file mode 100644
index 0000000..2462e05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_initializer_list.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// iterator insert(const_iterator p, initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<bool> d(10, true);
+    std::vector<bool>::iterator i = d.insert(d.cbegin() + 2, {false, true, true, false});
+    assert(d.size() == 14);
+    assert(i == d.begin() + 2);
+    assert(d[0] == true);
+    assert(d[1] == true);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    assert(d[4] == true);
+    assert(d[5] == false);
+    assert(d[6] == true);
+    assert(d[7] == true);
+    assert(d[8] == true);
+    assert(d[9] == true);
+    assert(d[10] == true);
+    assert(d[11] == true);
+    assert(d[12] == true);
+    assert(d[13] == true);
+    }
+    {
+    std::vector<bool, min_allocator<bool>> d(10, true);
+    std::vector<bool, min_allocator<bool>>::iterator i = d.insert(d.cbegin() + 2, {false, true, true, false});
+    assert(d.size() == 14);
+    assert(i == d.begin() + 2);
+    assert(d[0] == true);
+    assert(d[1] == true);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    assert(d[4] == true);
+    assert(d[5] == false);
+    assert(d[6] == true);
+    assert(d[7] == true);
+    assert(d[8] == true);
+    assert(d[9] == true);
+    assert(d[10] == true);
+    assert(d[11] == true);
+    assert(d[12] == true);
+    assert(d[13] == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..d4756cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_iter_iter.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// template <class Iter>
+//   iterator insert(const_iterator position, Iter first, Iter last);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v(100);
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, cpp17_input_iterator<const bool*>(a),
+                                        cpp17_input_iterator<const bool*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const bool*>(a),
+                                        forward_iterator<const bool*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        while(v.size() < v.capacity()) v.push_back(false);
+        size_t sz = v.size();
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const bool*>(a),
+                                        forward_iterator<const bool*>(a+N));
+        assert(v.size() == sz + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        while(v.size() < v.capacity()) v.push_back(false);
+        v.pop_back(); v.pop_back(); v.pop_back();
+        size_t sz = v.size();
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const bool*>(a),
+                                        forward_iterator<const bool*>(a+N));
+        assert(v.size() == sz + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, explicit_allocator<bool>> v(100);
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool, explicit_allocator<bool>>::iterator i = v.insert(v.cbegin() + 10, cpp17_input_iterator<const bool*>(a),
+                                        cpp17_input_iterator<const bool*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool, min_allocator<bool>>::iterator i = v.insert(v.cbegin() + 10, cpp17_input_iterator<const bool*>(a),
+                                        cpp17_input_iterator<const bool*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        bool a[] = {1, 0, 0, 1, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool, min_allocator<bool>>::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const bool*>(a),
+                                        forward_iterator<const bool*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_size_value.pass.cpp
new file mode 100644
index 0000000..feea188
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_size_value.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// iterator insert(const_iterator position, size_type n, const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v(100);
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 105);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        while(v.size() < v.capacity()) v.push_back(false);
+        size_t sz = v.size();
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == sz + 5);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        while(v.size() < v.capacity()) v.push_back(false);
+        v.pop_back(); v.pop_back();
+        size_t sz = v.size();
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == sz + 5);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, explicit_allocator<bool>> v(10);
+        std::vector<bool, explicit_allocator<bool>>::iterator i
+            = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 15);
+        assert(i == v.begin() + 10);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        std::vector<bool, min_allocator<bool>>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 105);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_value.pass.cpp
new file mode 100644
index 0000000..b9a926e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/insert_iter_value.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// iterator insert(const_iterator position, const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v(100);
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, 1);
+        assert(v.size() == 101);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        while(v.size() < v.capacity()) v.push_back(false);
+        size_t sz = v.size();
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, 1);
+        assert(v.size() == sz + 1);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<bool> v(100);
+        while(v.size() < v.capacity()) v.push_back(false);
+        v.pop_back(); v.pop_back();
+        size_t sz = v.size();
+        std::vector<bool>::iterator i = v.insert(v.cbegin() + 10, 1);
+        assert(v.size() == sz + 1);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, explicit_allocator<bool>> v(10);
+        std::vector<bool, explicit_allocator<bool>>::iterator i
+            = v.insert(v.cbegin() + 10, 1);
+        assert(v.size() == 11);
+        assert(i == v.begin() + 10);
+        assert(*i == 1);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        std::vector<bool, min_allocator<bool>>::iterator i = v.insert(v.cbegin() + 10, 1);
+        assert(v.size() == 101);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..ba2627e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+
+using iterator = std::vector<bool>::iterator;
+using const_iterator = std::vector<bool>::const_iterator;
+using reverse_iterator = std::vector<bool>::reverse_iterator;
+using const_reverse_iterator = std::vector<bool>::const_reverse_iterator;
+using value_type = bool;
+
+static_assert( std::random_access_iterator<iterator>);
+static_assert( std::random_access_iterator<reverse_iterator>);
+static_assert(!std::contiguous_iterator<iterator>);
+static_assert(!std::contiguous_iterator<reverse_iterator>);
+#if TEST_STD_VER > 20
+static_assert( std::indirectly_writable<iterator, value_type>);
+#else
+static_assert(!std::indirectly_writable<iterator, value_type>);
+#endif
+static_assert( std::sentinel_for<iterator, iterator>);
+static_assert( std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::sized_sentinel_for<iterator, iterator>);
+static_assert( std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_movable<iterator, bool*>);
+static_assert(std::indirectly_movable_storable<iterator, bool*>);
+static_assert(std::indirectly_copyable<iterator, bool*>);
+static_assert(std::indirectly_copyable_storable<iterator, bool*>);
+static_assert(std::indirectly_swappable<iterator, iterator>);
+
+static_assert( std::random_access_iterator<const_iterator>);
+static_assert( std::random_access_iterator<const_reverse_iterator>);
+static_assert(!std::contiguous_iterator<const_iterator>);
+static_assert(!std::contiguous_iterator<const_reverse_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert( std::sentinel_for<const_iterator, iterator>);
+static_assert( std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::sized_sentinel_for<const_iterator, iterator>);
+static_assert( std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/iterators.pass.cpp
new file mode 100644
index 0000000..9aaaac7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/iterators.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator       begin();
+// iterator       end();
+// const_iterator begin()  const;
+// const_iterator end()    const;
+// const_iterator cbegin() const;
+// const_iterator cend()   const;
+
+#include <vector>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    using IterRefT = std::iterator_traits<std::vector<bool>::iterator>::reference;
+    ASSERT_SAME_TYPE(IterRefT, std::vector<bool>::reference);
+
+    using ConstIterRefT = std::iterator_traits<std::vector<bool>::const_iterator>::reference;
+#if !defined(_LIBCPP_VERSION) || defined(_LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL)
+    ASSERT_SAME_TYPE(ConstIterRefT, bool);
+#else
+    ASSERT_SAME_TYPE(ConstIterRefT, std::__bit_const_reference<std::vector<bool> >);
+#endif
+    {
+        typedef bool T;
+        typedef std::vector<T> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef bool T;
+        typedef std::vector<T> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef bool T;
+        typedef std::vector<T> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef bool T;
+        typedef std::vector<T> C;
+        C::iterator i;
+        C::const_iterator j;
+        (void) i;
+        (void) j;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef bool T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef bool T;
+        typedef std::vector<T, min_allocator<T>> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef bool T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef bool T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C::iterator i;
+        C::const_iterator j;
+        (void) i;
+        (void) j;
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        std::vector<bool>::iterator ii1{}, ii2{};
+        std::vector<bool>::iterator ii4 = ii1;
+        std::vector<bool>::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+        assert (!(ii1 <  cii ));
+        assert (!(cii <  ii1 ));
+        assert ( (ii1 <= cii ));
+        assert ( (cii <= ii1 ));
+        assert (!(ii1 >  cii ));
+        assert (!(cii >  ii1 ));
+        assert ( (ii1 >= cii ));
+        assert ( (cii >= ii1 ));
+        assert (cii - ii1 == 0);
+        assert (ii1 - cii == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move.pass.cpp
new file mode 100644
index 0000000..0e65d98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector(vector&& c);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test_allocator_statistics alloc_stats;
+    {
+        std::vector<bool, test_allocator<bool> > l(test_allocator<bool>(5, &alloc_stats));
+        std::vector<bool, test_allocator<bool> > lo(test_allocator<bool>(5, &alloc_stats));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(true);
+            lo.push_back(true);
+        }
+        std::vector<bool, test_allocator<bool> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+    }
+    {
+        std::vector<bool, other_allocator<bool> > l(other_allocator<bool>(5));
+        std::vector<bool, other_allocator<bool> > lo(other_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(true);
+            lo.push_back(true);
+        }
+        std::vector<bool, other_allocator<bool> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+    }
+    {
+        std::vector<bool, min_allocator<bool> > l(min_allocator<bool>{});
+        std::vector<bool, min_allocator<bool> > lo(min_allocator<bool>{});
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(true);
+            lo.push_back(true);
+        }
+        std::vector<bool, min_allocator<bool> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+    }
+    {
+      alloc_stats.clear();
+      using Vect = std::vector<bool, test_allocator<bool> >;
+      using AllocT = Vect::allocator_type;
+      Vect v(test_allocator<bool>(42, 101, &alloc_stats));
+      assert(alloc_stats.count == 1);
+      {
+        const AllocT& a = v.get_allocator();
+        assert(alloc_stats.count == 2);
+        assert(a.get_data() == 42);
+        assert(a.get_id() == 101);
+      }
+      assert(alloc_stats.count == 1);
+      alloc_stats.clear_ctor_counters();
+
+      Vect v2 = std::move(v);
+      assert(alloc_stats.count == 2);
+      assert(alloc_stats.copied == 0);
+      assert(alloc_stats.moved == 1);
+      {
+        const AllocT& a = v.get_allocator();
+        assert(a.get_id() == test_alloc_base::moved_value);
+        assert(a.get_data() == test_alloc_base::moved_value);
+      }
+      {
+        const AllocT& a = v2.get_allocator();
+        assert(a.get_id() == 101);
+        assert(a.get_data() == 42);
+      }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_alloc.pass.cpp
new file mode 100644
index 0000000..1f41657
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_alloc.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector(vector&& c, const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool, test_allocator<bool> > l(test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > lo(test_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, test_allocator<bool> > l2(std::move(l), test_allocator<bool>(6));
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == test_allocator<bool>(6));
+    }
+    {
+        std::vector<bool, test_allocator<bool> > l(test_allocator<bool>(5));
+        std::vector<bool, test_allocator<bool> > lo(test_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, test_allocator<bool> > l2(std::move(l), test_allocator<bool>(5));
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == test_allocator<bool>(5));
+    }
+    {
+        std::vector<bool, other_allocator<bool> > l(other_allocator<bool>(5));
+        std::vector<bool, other_allocator<bool> > lo(other_allocator<bool>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, other_allocator<bool> > l2(std::move(l), other_allocator<bool>(4));
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == other_allocator<bool>(4));
+    }
+    {
+        std::vector<bool, min_allocator<bool> > l(min_allocator<bool>{});
+        std::vector<bool, min_allocator<bool> > lo(min_allocator<bool>{});
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        std::vector<bool, min_allocator<bool> > l2(std::move(l), min_allocator<bool>());
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == min_allocator<bool>());
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..c40d1e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_assign_noexcept.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector& operator=(vector&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_move_assignment;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_move_assignment;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::vector<bool, test_allocator<bool>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool, other_allocator<bool>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+#if TEST_STD_VER > 14
+#if defined(_LIBCPP_VERSION)
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert( std::is_nothrow_move_assignable<C>::value, "");
+#endif // _LIBCPP_VERSION
+#else
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+#endif
+    }
+#if TEST_STD_VER > 14
+#if defined(_LIBCPP_VERSION)
+    {  // POCMA false, is_always_equal true
+        typedef std::vector<bool, some_alloc2<bool>> C;
+        static_assert( std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {  // POCMA false, is_always_equal false
+        typedef std::vector<bool, some_alloc3<bool>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_noexcept.pass.cpp
new file mode 100644
index 0000000..ccd8185
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/move_noexcept.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(vector&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, test_allocator<bool>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<bool, other_allocator<bool>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+    //  In C++17, move constructors for allocators are not allowed to throw
+#if TEST_STD_VER > 14
+#if defined(_LIBCPP_VERSION)
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert( std::is_nothrow_move_constructible<C>::value, "");
+#endif // _LIBCPP_VERSION
+#else
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/op_equal_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/op_equal_initializer_list.pass.cpp
new file mode 100644
index 0000000..6183571
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/op_equal_initializer_list.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector& operator=(initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<bool> d;
+    d = {true, false, false, true};
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+    {
+    std::vector<bool, min_allocator<bool>> d;
+    d = {true, false, false, true};
+    assert(d.size() == 4);
+    assert(d[0] == true);
+    assert(d[1] == false);
+    assert(d[2] == false);
+    assert(d[3] == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/push_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/push_back.pass.cpp
new file mode 100644
index 0000000..25f8fb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/push_back.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// void push_back(const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        bool a[] = {0, 1, 1, 0, 1, 0, 0};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool> c;
+        for (unsigned i = 0; i < N; ++i)
+        {
+            c.push_back(a[i]);
+            assert(c.size() == i+1);
+            for (std::size_t j = 0; j < c.size(); ++j)
+                assert(c[j] == a[j]);
+        }
+    }
+#if TEST_STD_VER >= 11
+    {
+        bool a[] = {0, 1, 1, 0, 1, 0, 0};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::vector<bool, min_allocator<bool>> c;
+        for (unsigned i = 0; i < N; ++i)
+        {
+            c.push_back(a[i]);
+            assert(c.size() == i+1);
+            for (std::size_t j = 0; j < c.size(); ++j)
+                assert(c[j] == a[j]);
+        }
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..410cf83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// vector
+
+#include <vector>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::vector<bool>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::random_access_range<range>);
+static_assert(!std::ranges::contiguous_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::random_access_range<range const>);
+static_assert(!std::ranges::contiguous_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference.swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference.swap.pass.cpp
new file mode 100644
index 0000000..8879d1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference.swap.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// static void swap(reference x, reference y) noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+
+    bool a[] = {false, true, false, true};
+    bool* an = a + sizeof(a)/sizeof(a[0]);
+
+    std::vector<bool> v(a, an);
+    std::vector<bool>::reference r1 = v[0];
+    std::vector<bool>::reference r2 = v[3];
+
+#if TEST_STD_VER >= 11
+    static_assert((noexcept(v.swap(r1,r2))), "");
+#endif
+
+    assert(!r1);
+    assert( r2);
+    v.swap(r1, r2);
+    assert( r1);
+    assert(!r2);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/assign_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/assign_bool.pass.cpp
new file mode 100644
index 0000000..64dcc3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/assign_bool.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// reference& operator=(bool)
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::vector<bool> vec;
+  typedef std::vector<bool>::reference Ref;
+  vec.push_back(true);
+  vec.push_back(false);
+  Ref ref = vec[0];
+  const Ref cref = vec[0];
+
+  assert(ref);
+  ref = false;
+  assert(!vec[0]);
+  assert(!vec[1]);
+  ref = true;
+  assert(vec[0]);
+  assert(!vec[1]);
+
+  assert(cref);
+
+#if TEST_STD_VER > 20
+  cref = false;
+  assert(!vec[0]);
+  assert(!vec[1]);
+  cref = true;
+  assert(vec[0]);
+  assert(!vec[1]);
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/assign_copy.pass.cpp
new file mode 100644
index 0000000..bcccb20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/assign_copy.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// reference& operator=(const reference&)
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::vector<bool> vec;
+  typedef std::vector<bool>::reference Ref;
+  vec.push_back(true);
+  vec.push_back(false);
+  Ref ref1 = vec[0];
+  Ref ref2 = vec[1];
+  ref2 = ref1;
+  // Ref&
+  {
+    vec[0] = false;
+    vec[1] = true;
+    ref1 = ref2;
+    assert(vec[0]);
+    assert(vec[1]);
+  }
+  {
+    vec[0] = true;
+    vec[1] = false;
+    ref1 = ref2;
+    assert(!vec[0]);
+    assert(!vec[1]);
+  }
+  // Ref&&
+  {
+    vec[0] = false;
+    vec[1] = true;
+    ref1 = std::move(ref2);
+    assert(vec[0]);
+    assert(vec[1]);
+  }
+  {
+    vec[0] = true;
+    vec[1] = false;
+    ref1 = std::move(ref2);
+    assert(!vec[0]);
+    assert(!vec[1]);
+  }
+  // const Ref&
+  {
+    vec[0] = false;
+    vec[1] = true;
+    ref1 = static_cast<const Ref&>(ref2);
+    assert(vec[0]);
+    assert(vec[1]);
+  }
+  {
+    vec[0] = true;
+    vec[1] = false;
+    ref1 = static_cast<const Ref&>(ref2);
+    assert(!vec[0]);
+    assert(!vec[1]);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/ctor_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/ctor_copy.pass.cpp
new file mode 100644
index 0000000..46ac18a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/ctor_copy.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// reference(const reference&)
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::vector<bool> vec;
+  typedef std::vector<bool>::reference Ref;
+  vec.push_back(true);
+  Ref ref = vec[0];
+  Ref ref2 = ref;
+  assert(ref == ref2 && ref2);
+  ref.flip();
+  assert(ref == ref2 && !ref2);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/flip.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/flip.pass.cpp
new file mode 100644
index 0000000..0809756
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/flip.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// flip()
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::vector<bool> vec;
+  typedef std::vector<bool>::reference Ref;
+  vec.push_back(true);
+  vec.push_back(false);
+  Ref ref = vec[0];
+  assert(vec[0]);
+  assert(!vec[1]);
+  ref.flip();
+  assert(!vec[0]);
+  assert(!vec[1]);
+  ref.flip();
+  assert(vec[0]);
+  assert(!vec[1]);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/operator_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/operator_bool.pass.cpp
new file mode 100644
index 0000000..02abd0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/operator_bool.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// operator bool()
+
+#include <cassert>
+#include <type_traits>
+#include <vector>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::vector<bool> vec;
+  typedef std::vector<bool>::reference Ref;
+  static_assert(std::is_convertible<Ref, bool>::value, "");
+
+  vec.push_back(true);
+  vec.push_back(false);
+  Ref true_ref = vec[0];
+  Ref false_ref = vec[1];
+  bool b = true_ref;
+  assert(b);
+  assert(true_ref);
+  assert(!false_ref);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/triviality.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/triviality.compile.pass.cpp
new file mode 100644
index 0000000..7e403ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reference/triviality.compile.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <type_traits>
+#include <vector>
+
+#include "test_macros.h"
+
+using Ref = std::vector<bool>::reference;
+
+LIBCPP_STATIC_ASSERT(!std::is_trivially_constructible<Ref>::value, "");
+LIBCPP_STATIC_ASSERT(std::is_trivially_copy_constructible<Ref>::value, "");
+LIBCPP_STATIC_ASSERT(std::is_trivially_move_constructible<Ref>::value, "");
+LIBCPP_STATIC_ASSERT(!std::is_trivially_copy_assignable<Ref>::value, "");
+LIBCPP_STATIC_ASSERT(!std::is_trivially_move_assignable<Ref>::value, "");
+LIBCPP_STATIC_ASSERT(std::is_trivially_destructible<Ref>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reserve.pass.cpp
new file mode 100644
index 0000000..e179fb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/reserve.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// void reserve(size_type n);
+
+#include <vector>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v;
+        v.reserve(10);
+        assert(v.capacity() >= 10);
+    }
+    {
+        std::vector<bool> v(100);
+        assert(v.capacity() >= 100);
+        v.reserve(50);
+        assert(v.size() == 100);
+        assert(v.capacity() >= 100);
+        v.reserve(150);
+        assert(v.size() == 100);
+        assert(v.capacity() >= 150);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool>> v;
+        v.reserve(10);
+        assert(v.capacity() >= 10);
+    }
+    {
+        std::vector<bool, explicit_allocator<bool>> v;
+        v.reserve(10);
+        assert(v.capacity() >= 10);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        assert(v.capacity() >= 100);
+        v.reserve(50);
+        assert(v.size() == 100);
+        assert(v.capacity() >= 100);
+        v.reserve(150);
+        assert(v.size() == 100);
+        assert(v.capacity() >= 150);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        std::vector<bool, limited_allocator<bool, 10> > v;
+        v.reserve(5);
+        try {
+            // A typical implementation would allocate chunks of bits.
+            // In libc++ the chunk has the same size as the machine word. It is
+            // reasonable to assume that in practice no implementation would use
+            // 64 kB or larger chunks.
+            v.reserve(10 * 65536);
+            assert(false);
+        } catch (const std::length_error&) {
+            // no-op
+        }
+        assert(v.capacity() >= 5);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/resize_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/resize_size.pass.cpp
new file mode 100644
index 0000000..ef83dbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/resize_size.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// void resize(size_type sz);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() >= 100);
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        v.reserve(400);
+        v.resize(300);  // check the case when resizing and we already have room
+        assert(v.size() == 300);
+        assert(v.capacity() >= 400);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, explicit_allocator<bool>> v;
+        v.resize(10);
+        assert(v.size() == 10);
+        assert(v.capacity() >= 10);
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() >= 100);
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        v.reserve(400);
+        v.resize(300);  // check the case when resizing and we already have room
+        assert(v.size() == 300);
+        assert(v.capacity() >= 400);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/resize_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/resize_size_value.pass.cpp
new file mode 100644
index 0000000..fa7ae3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/resize_size_value.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// void resize(size_type sz, const value_type& x);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v(100);
+        v.resize(50, 1);
+        assert(v.size() == 50);
+        assert(v.capacity() >= 100);
+        assert(v == std::vector<bool>(50));
+        v.resize(200, 1);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        for (unsigned i = 0; i < 50; ++i)
+            assert(v[i] == 0);
+        for (unsigned i = 50; i < 200; ++i)
+            assert(v[i] == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        v.resize(50, 1);
+        assert(v.size() == 50);
+        assert(v.capacity() >= 100);
+        assert((v == std::vector<bool, min_allocator<bool>>(50)));
+        v.resize(200, 1);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        for (unsigned i = 0; i < 50; ++i)
+            assert(v[i] == 0);
+        for (unsigned i = 50; i < 200; ++i)
+            assert(v[i] == 1);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/shrink_to_fit.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/shrink_to_fit.pass.cpp
new file mode 100644
index 0000000..b39245c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/shrink_to_fit.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// void shrink_to_fit();
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v(100);
+        v.push_back(1);
+        v.shrink_to_fit();
+        assert(v.capacity() >= 101);
+        assert(v.size() >= 101);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool>> v(100);
+        v.push_back(1);
+        v.shrink_to_fit();
+        assert(v.capacity() >= 101);
+        assert(v.size() >= 101);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/size.pass.cpp
new file mode 100644
index 0000000..33f8b72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/size.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// size_type size() const noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    typedef std::vector<bool> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(false);
+    assert(c.size() == 1);
+    c.push_back(true);
+    assert(c.size() == 2);
+    c.push_back(false);
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<bool, min_allocator<bool>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(false);
+    assert(c.size() == 1);
+    c.push_back(true);
+    assert(c.size() == 2);
+    c.push_back(false);
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/swap.pass.cpp
new file mode 100644
index 0000000..edd28ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/swap.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// vector<bool>
+
+// void swap(vector& x);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<bool> v1(100);
+        std::vector<bool> v2(200);
+        v1.swap(v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() >= 200);
+        assert(v2.size() == 100);
+        assert(v2.capacity() >= 100);
+    }
+    {
+        typedef test_allocator<bool> A;
+        std::vector<bool, A> v1(100, true, A(1, 1));
+        std::vector<bool, A> v2(200, false, A(1, 2));
+        swap(v1, v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() >= 200);
+        assert(v2.size() == 100);
+        assert(v2.capacity() >= 100);
+        assert(v1.get_allocator().get_id() == 1);
+        assert(v2.get_allocator().get_id() == 2);
+    }
+    {
+        typedef other_allocator<bool> A;
+        std::vector<bool, A> v1(100, true, A(1));
+        std::vector<bool, A> v2(200, false, A(2));
+        swap(v1, v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() >= 200);
+        assert(v2.size() == 100);
+        assert(v2.capacity() >= 100);
+        assert(v1.get_allocator() == A(2));
+        assert(v2.get_allocator() == A(1));
+    }
+    {
+        std::vector<bool> v(2);
+        std::vector<bool>::reference r1 = v[0];
+        std::vector<bool>::reference r2 = v[1];
+        r1 = true;
+        using std::swap;
+        swap(r1, r2);
+        assert(v[0] == false);
+        assert(v[1] == true);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<bool, min_allocator<bool>> v1(100);
+        std::vector<bool, min_allocator<bool>> v2(200);
+        v1.swap(v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() >= 200);
+        assert(v2.size() == 100);
+        assert(v2.capacity() >= 100);
+    }
+    {
+        typedef min_allocator<bool> A;
+        std::vector<bool, A> v1(100, true, A());
+        std::vector<bool, A> v2(200, false, A());
+        swap(v1, v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() >= 200);
+        assert(v2.size() == 100);
+        assert(v2.capacity() >= 100);
+        assert(v1.get_allocator() == A());
+        assert(v2.get_allocator() == A());
+    }
+    {
+        std::vector<bool, min_allocator<bool>> v(2);
+        std::vector<bool, min_allocator<bool>>::reference r1 = v[0];
+        std::vector<bool, min_allocator<bool>>::reference r2 = v[1];
+        r1 = true;
+        using std::swap;
+        swap(r1, r2);
+        assert(v[0] == false);
+        assert(v[1] == true);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..40f7ae0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/swap_noexcept.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// void swap(vector& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::propagate_on_container_swap::value ||
+//              allocator_traits<Allocator>::is_always_equal::value);
+
+// This tests a conforming extension
+
+#include <vector>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::vector<bool, test_allocator<bool>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::vector<bool, other_allocator<bool>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+#if TEST_STD_VER >= 14
+#if defined(_LIBCPP_VERSION)
+    //  In C++14, if POCS is set, swapping the allocator is required not to throw
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif // _LIBCPP_VERSION
+#else
+        typedef std::vector<bool, some_alloc<bool>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif
+    }
+#if TEST_STD_VER >= 14
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<bool, some_alloc2<bool>> C;
+    //  if the allocators are always equal, then the swap can be noexcept
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/types.pass.cpp
new file mode 100644
index 0000000..d75d715
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/types.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Test nested types and default template args:
+
+// template <class Allocator>
+// class vector<bool, Allocator
+// {
+// public:
+//     typedef T                                        value_type;
+//     typedef Allocator                                allocator_type;
+//     typedef implementation-defined                   iterator;
+//     typedef implementation-defined                   const_iterator;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef std::reverse_iterator<iterator>          reverse_iterator;
+//     typedef std::reverse_iterator<const_iterator>    const_reverse_iterator;
+//     typedef bool                                     const_reference;
+// };
+
+#include <vector>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../Copyable.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void
+test()
+{
+    typedef std::vector<bool, Allocator> C;
+
+    static_assert((std::is_same<typename C::value_type, bool>::value), "");
+    static_assert((std::is_same<typename C::value_type, typename Allocator::value_type>::value), "");
+    static_assert((std::is_same<typename C::allocator_type, Allocator>::value), "");
+    static_assert((std::is_same<typename C::size_type, typename std::allocator_traits<Allocator>::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type, typename std::allocator_traits<Allocator>::difference_type>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type,
+        typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+
+   static_assert((std::is_same<
+        typename std::iterator_traits<typename C::iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename C::const_iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename C::reverse_iterator,
+        std::reverse_iterator<typename C::iterator> >::value), "");
+    static_assert((std::is_same<
+        typename C::const_reverse_iterator,
+        std::reverse_iterator<typename C::const_iterator> >::value), "");
+#if !defined(_LIBCPP_VERSION) || defined(_LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL)
+    static_assert(std::is_same<typename C::const_reference, bool>::value, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<test_allocator<bool> >();
+    test<std::allocator<bool> >();
+    static_assert((std::is_same<std::vector<bool>::allocator_type,
+                                std::allocator<bool> >::value), "");
+#if TEST_STD_VER >= 11
+    test<min_allocator<bool> >();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.format.pass.cpp
new file mode 100644
index 0000000..61cbfea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.format.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// <vector>
+
+// template<class T, class charT>
+//   requires is-vector-bool-reference<T>
+// struct formatter<T, charT>
+
+// template<class... Args>
+//   string format(format_string<Args...> fmt, Args&&... args);
+// template<class... Args>
+//   wstring format(wformat_string<Args...> fmt, Args&&... args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+};
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.tests.h b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.tests.h
new file mode 100644
index 0000000..32b68b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.tests.h
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_CONTAINERS_SEQUENCES_VECTOR_BOOL_VECTOR_BOOL_FMT_FORMAT_FUNCTIONS_TESTS_H
+#define TEST_STD_CONTAINERS_SEQUENCES_VECTOR_BOOL_VECTOR_BOOL_FMT_FORMAT_FUNCTIONS_TESTS_H
+
+#include <vector>
+
+#include "format.functions.common.h"
+#include "test_macros.h"
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_tests(TestFunction check, ExceptionTest check_exception) {
+  std::vector input{true, true, false};
+
+  check(SV("[true, true, false]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[true, true, false]     "), SV("{:24}"), input);
+  check(SV("[true, true, false]*****"), SV("{:*<24}"), input);
+  check(SV("__[true, true, false]___"), SV("{:_^24}"), input);
+  check(SV("#####[true, true, false]"), SV("{:#>24}"), input);
+
+  check(SV("[true, true, false]     "), SV("{:{}}"), input, 24);
+  check(SV("[true, true, false]*****"), SV("{:*<{}}"), input, 24);
+  check(SV("__[true, true, false]___"), SV("{:_^{}}"), input, 24);
+  check(SV("#####[true, true, false]"), SV("{:#>{}}"), input, 24);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__true, true, false___"), SV("{:_^22n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[true   , true   , false  ]"), SV("{::7}"), input);
+  check(SV("[true***, true***, false**]"), SV("{::*<7}"), input);
+  check(SV("[_true__, _true__, _false_]"), SV("{::_^7}"), input);
+  check(SV("[:::true, :::true, ::false]"), SV("{:::>7}"), input);
+
+  check(SV("[true   , true   , false  ]"), SV("{::{}}"), input, 7);
+  check(SV("[true***, true***, false**]"), SV("{::*<{}}"), input, 7);
+  check(SV("[_true__, _true__, _false_]"), SV("{::_^{}}"), input, 7);
+  check(SV("[:::true, :::true, ::false]"), SV("{:::>{}}"), input, 7);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("[1, 1, 0]"), SV("{::-d}"), input);
+  check(SV("[+1, +1, +0]"), SV("{::+d}"), input);
+  check(SV("[ 1,  1,  0]"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("[0x1, 0x1, 0x0]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("[00001, 00001, 00000]"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^32::>7}"), input);
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>7}"), input, 32);
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>{}}"), input, 32, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 32);
+}
+
+#endif // TEST_STD_CONTAINERS_SEQUENCES_VECTOR_BOOL_VECTOR_BOOL_FMT_FORMAT_FUNCTIONS_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.vformat.pass.cpp
new file mode 100644
index 0000000..9e6db80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.functions.vformat.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <vector>
+
+// template<class T, class charT>
+//   requires is-vector-bool-reference<T>
+// struct formatter<T, charT>
+
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch (const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.pass.cpp
new file mode 100644
index 0000000..acb517a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/format.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <vector>
+
+// template<class T, class charT>
+//   requires is-vector-bool-reference<T>
+// struct formatter<T, charT>
+
+// template<class FormatContext>
+//   typename FormatContext::iterator
+//     format(const T& r, FormatContext& ctx) const;
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <vector>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+void test_format(StringViewT expected, std::vector<bool>::reference arg) {
+  using CharT      = typename StringViewT::value_type;
+  using String     = std::basic_string<CharT>;
+  using OutIt      = std::back_insert_iterator<String>;
+  using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+  const std::formatter<std::vector<bool>::reference, CharT> formatter;
+
+  String result;
+  OutIt out             = std::back_inserter(result);
+  FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class CharT>
+void test_fmt() {
+  test_format(SV("true"), std::vector<bool>{true}[0]);
+  test_format(SV("false"), std::vector<bool>{false}[0]);
+}
+
+void test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/parse.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/parse.pass.cpp
new file mode 100644
index 0000000..c099cfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector.bool.fmt/parse.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <vector>
+
+// template<class T, class charT>
+//   requires is-vector-bool-reference<T>
+// struct formatter<T, charT>
+
+// template<class ParseContext>
+//   constexpr typename ParseContext::iterator
+//     parse(ParseContext& ctx);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <vector>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+constexpr void test_parse(StringViewT fmt) {
+  using CharT    = typename StringViewT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<std::vector<bool, std::allocator<bool>>::reference, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+}
+
+template <class CharT>
+constexpr void test_fmt() {
+  test_parse(SV(""));
+  test_parse(SV("b"));
+
+  test_parse(SV("}"));
+  test_parse(SV("b}"));
+}
+
+constexpr bool test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector_bool.pass.cpp
new file mode 100644
index 0000000..b927f2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector.bool/vector_bool.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+// Not very portable
+
+#include <vector>
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    typedef std::vector<bool> T;
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<H::argument_type, T>::value), "" );
+    static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+
+    bool ba[] = {true, false, true, true, false};
+    T vb(std::begin(ba), std::end(ba));
+    H h;
+    assert(h(vb) != 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<bool, min_allocator<bool>> T;
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<H::argument_type, T>::value), "" );
+    static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    bool ba[] = {true, false, true, true, false};
+    T vb(std::begin(ba), std::end(ba));
+    H h;
+    assert(h(vb) != 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/access.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/access.pass.cpp
new file mode 100644
index 0000000..5989f1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/access.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+//       reference operator[](size_type __i);
+// const_reference operator[](size_type __i) const;
+//
+//       reference at(size_type __i);
+// const_reference at(size_type __i) const;
+//
+//       reference front();
+// const_reference front() const;
+//
+//       reference back();
+// const_reference back() const;
+// libc++ marks these as 'noexcept' (except 'at')
+
+#include <vector>
+#include <cassert>
+#include <stdexcept>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 C make(int size, int start) {
+    C c;
+    for (int i = 0; i < size; ++i)
+        c.push_back(start + i);
+    return c;
+}
+
+template <class Vector>
+TEST_CONSTEXPR_CXX20 void test_get_basic(Vector& c, int start_value) {
+    const int n = static_cast<int>(c.size());
+    for (int i = 0; i < n; ++i)
+        assert(c[i] == start_value + i);
+    for (int i = 0; i < n; ++i)
+        assert(c.at(i) == start_value + i);
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        try {
+            TEST_IGNORE_NODISCARD c.at(n);
+            assert(false);
+        } catch (const std::out_of_range&) {}
+    }
+#endif
+
+    assert(c.front() == start_value);
+    assert(c.back() == start_value + n - 1);
+}
+
+template <class Vector>
+TEST_CONSTEXPR_CXX20 void test_get() {
+    int start_value = 35;
+    Vector c = make<Vector>(10, start_value);
+    const Vector& cc = c;
+    test_get_basic(c, start_value);
+    test_get_basic(cc, start_value);
+}
+
+template <class Vector>
+TEST_CONSTEXPR_CXX20 void test_set() {
+    int start_value = 35;
+    const int n = 10;
+    Vector c = make<Vector>(n, start_value);
+
+    for (int i = 0; i < n; ++i) {
+        assert(c[i] == start_value + i);
+        c[i] = start_value + i + 1;
+        assert(c[i] == start_value + i + 1);
+    }
+    for (int i = 0; i < n; ++i) {
+        assert(c.at(i) == start_value + i + 1);
+        c.at(i) = start_value + i + 2;
+        assert(c.at(i) == start_value + i + 2);
+    }
+
+    assert(c.front() == start_value + 2);
+    c.front() = start_value + 3;
+    assert(c.front() == start_value + 3);
+
+    assert(c.back() == start_value + n + 1);
+    c.back() = start_value + n + 2;
+    assert(c.back() == start_value + n + 2);
+}
+
+template <class Vector>
+TEST_CONSTEXPR_CXX20 void test() {
+    test_get<Vector>();
+    test_set<Vector>();
+
+    Vector c;
+    const Vector& cc = c;
+    ASSERT_SAME_TYPE(typename Vector::reference, decltype(c[0]));
+    ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc[0]));
+
+    ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.at(0)));
+    ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.at(0)));
+
+    ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.front()));
+    ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.front()));
+
+    ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.back()));
+    ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.back()));
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    test<std::vector<int> >();
+#if TEST_STD_VER >= 11
+    test<std::vector<int, min_allocator<int> > >();
+#endif
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..0c57f16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+//   The container's value type must be the same as the allocator's value type
+
+#include <vector>
+
+int main(int, char**)
+{
+    std::vector<int, std::allocator<long> > v;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/compare.pass.cpp
new file mode 100644
index 0000000..917095e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/compare.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// bool operator==(const vector& lhs, const vector& rhs);
+// bool operator!=(const vector& lhs, const vector& rhs);
+// bool operator< (const vector& lhs, const vector& rhs);
+// bool operator<=(const vector& lhs, const vector& rhs);
+// bool operator> (const vector& lhs, const vector& rhs);
+// bool operator>=(const vector& lhs, const vector& rhs);
+
+#include <vector>
+#include <cassert>
+
+#include "test_comparisons.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    {
+        const std::vector<int> c1, c2;
+        assert(testComparisons(c1, c2, true, false));
+    }
+    {
+        const std::vector<int> c1(1, 1), c2(1, 2);
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        const std::vector<int> c1, c2(1, 2);
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        int items1[3] = {1, 2, 1};
+        int items2[3] = {1, 2, 2};
+        const std::vector<int> c1(items1, items1 + 3);
+        const std::vector<int> c2(items2, items2 + 3);
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        int items1[3] = {3, 2, 3};
+        int items2[3] = {3, 1, 3};
+        const std::vector<int> c1(items1, items1 + 3);
+        const std::vector<int> c2(items2, items2 + 3);
+
+        assert(testComparisons(c1, c2, false, false));
+    }
+    {
+        int items1[2] = {1, 2};
+        int items2[3] = {1, 2, 0};
+        const std::vector<int> c1(items1, items1 + 2);
+        const std::vector<int> c2(items2, items2 + 3);
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        int items1[3] = {1, 2, 0};
+        const std::vector<int> c1(items1, items1 + 3);
+        const std::vector<int> c2(1, 3);
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        const std::vector<LessAndEqComp> c1, c2;
+        assert(testComparisons(c1, c2, true, false));
+    }
+    {
+        const std::vector<LessAndEqComp> c1(1, LessAndEqComp(1));
+        const std::vector<LessAndEqComp> c2(1, LessAndEqComp(1));
+        assert(testComparisons(c1, c2, true, false));
+    }
+    {
+        const std::vector<LessAndEqComp> c1(1, LessAndEqComp(1));
+        const std::vector<LessAndEqComp> c2(1, LessAndEqComp(2));
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        const std::vector<LessAndEqComp> c1;
+        const std::vector<LessAndEqComp> c2(1, LessAndEqComp(2));
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        LessAndEqComp items1[3] = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(2)};
+        LessAndEqComp items2[3] = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(1)};
+        const std::vector<LessAndEqComp> c1(items1, items1 + 3);
+        const std::vector<LessAndEqComp> c2(items2, items2 + 3);
+        assert(testComparisons(c1, c2, false, false));
+    }
+    {
+        LessAndEqComp items1[3] = {LessAndEqComp(3), LessAndEqComp(3), LessAndEqComp(3)};
+        LessAndEqComp items2[3] = {LessAndEqComp(3), LessAndEqComp(2), LessAndEqComp(3)};
+        const std::vector<LessAndEqComp> c1(items1, items1 + 3);
+        const std::vector<LessAndEqComp> c2(items2, items2 + 3);
+        assert(testComparisons(c1, c2, false, false));
+    }
+    {
+        LessAndEqComp items1[2] = {LessAndEqComp(1), LessAndEqComp(2)};
+        LessAndEqComp items2[3] = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(0)};
+        const std::vector<LessAndEqComp> c1(items1, items1 + 2);
+        const std::vector<LessAndEqComp> c2(items2, items2 + 3);
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        LessAndEqComp items1[3] = {LessAndEqComp(1), LessAndEqComp(2), LessAndEqComp(0)};
+        const std::vector<LessAndEqComp> c1(items1, items1 + 3);
+        const std::vector<LessAndEqComp> c2(1, LessAndEqComp(3));
+        assert(testComparisons(c1, c2, false, true));
+    }
+    {
+        assert((std::vector<int>() == std::vector<int>()));
+        assert(!(std::vector<int>() != std::vector<int>()));
+        assert(!(std::vector<int>() < std::vector<int>()));
+        assert((std::vector<int>() <= std::vector<int>()));
+        assert(!(std::vector<int>() > std::vector<int>()));
+        assert((std::vector<int>() >= std::vector<int>()));
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/constant_initialization.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/constant_initialization.pass.cpp
new file mode 100644
index 0000000..7a23a2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/constant_initialization.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// XFAIL: libcpp-has-debug-mode
+
+#include <algorithm>
+#include <vector>
+
+std::vector<int> ca_allocs;
+
+int main(int, char**) {
+  ca_allocs.push_back(0);
+  for ([[maybe_unused]] const auto& a : ca_allocs)
+    ;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/contiguous.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/contiguous.pass.cpp
new file mode 100644
index 0000000..d9f557e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/contiguous.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// An vector is a contiguous container
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test_contiguous(const C &c)
+{
+    for ( size_t i = 0; i < c.size(); ++i )
+        assert ( *(c.begin() + static_cast<typename C::difference_type>(i)) == *(std::addressof(*c.begin()) + i));
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    typedef int T;
+    typedef std::vector<T> C;
+    test_contiguous(C());
+    test_contiguous(C(3, 5));
+    }
+
+    {
+    typedef double T;
+    typedef test_allocator<T> A;
+    typedef std::vector<T, A> C;
+    test_contiguous(C(A(3)));
+    test_contiguous(C(7, 9.0, A(5)));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef double T;
+    typedef min_allocator<T> A;
+    typedef std::vector<T, A> C;
+    test_contiguous(C(A{}));
+    test_contiguous(C(9, 11.0, A{}));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/get_allocator.pass.cpp
new file mode 100644
index 0000000..c0003ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/get_allocator.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// allocator_type get_allocator() const
+
+#include <vector>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    {
+        std::allocator<int> alloc;
+        const std::vector<int> v(alloc);
+        assert(v.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::vector<int, other_allocator<int> > v(alloc);
+        assert(v.get_allocator() == alloc);
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..f0dc2ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <vector>
+
+#include <iterator>
+
+using iterator = std::vector<int>::iterator;
+using const_iterator = std::vector<int>::const_iterator;
+using reverse_iterator = std::vector<int>::reverse_iterator;
+using const_reverse_iterator = std::vector<int>::const_reverse_iterator;
+using value_type = int;
+
+static_assert( std::contiguous_iterator<iterator>);
+static_assert( std::random_access_iterator<reverse_iterator>);
+static_assert(!std::contiguous_iterator<reverse_iterator>);
+static_assert( std::indirectly_writable<iterator, value_type>);
+static_assert( std::sentinel_for<iterator, iterator>);
+static_assert( std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::sized_sentinel_for<iterator, iterator>);
+static_assert( std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, iterator>);
+static_assert( std::indirectly_movable_storable<iterator, iterator>);
+static_assert(!std::indirectly_movable<iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_movable<iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_copyable<iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_swappable<iterator, iterator>);
+
+static_assert( std::contiguous_iterator<const_iterator>);
+static_assert( std::random_access_iterator<const_reverse_iterator>);
+static_assert(!std::contiguous_iterator<const_reverse_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert( std::sentinel_for<const_iterator, iterator>);
+static_assert( std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::sized_sentinel_for<const_iterator, iterator>);
+static_assert( std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<const_iterator, iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_movable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/iterators.pass.cpp
new file mode 100644
index 0000000..70e0e35
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/iterators.pass.cpp
@@ -0,0 +1,180 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator       begin();
+// iterator       end();
+// const_iterator begin()  const;
+// const_iterator end()    const;
+// const_iterator cbegin() const;
+// const_iterator cend()   const;
+
+#include <vector>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct A
+{
+    int first;
+    int second;
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef int T;
+        typedef std::vector<T> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::vector<T> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::vector<T> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef int T;
+        typedef std::vector<T> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 1);
+        *i = 10;
+        assert(*i == 10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+    }
+    {
+        typedef int T;
+        typedef std::vector<T> C;
+        C::iterator i;
+        C::const_iterator j;
+        (void) i;
+        (void) j;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef int T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C c;
+        C::iterator i = c.begin();
+        C::iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::vector<T, min_allocator<T>> C;
+        const C c;
+        C::const_iterator i = c.begin();
+        C::const_iterator j = c.end();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+    }
+    {
+        typedef int T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C c;
+        C::const_iterator i = c.cbegin();
+        C::const_iterator j = c.cend();
+        assert(std::distance(i, j) == 0);
+        assert(i == j);
+        assert(i == c.end());
+    }
+    {
+        typedef int T;
+        typedef std::vector<T, min_allocator<T>> C;
+        const T t[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        C c(std::begin(t), std::end(t));
+        C::iterator i = c.begin();
+        assert(*i == 0);
+        ++i;
+        assert(*i == 1);
+        *i = 10;
+        assert(*i == 10);
+        assert(std::distance(c.begin(), c.end()) == 10);
+    }
+    {
+        typedef int T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C::iterator i;
+        C::const_iterator j;
+        (void) i;
+        (void) j;
+    }
+    {
+        typedef A T;
+        typedef std::vector<T, min_allocator<T>> C;
+        C c = {A{1, 2}};
+        C::iterator i = c.begin();
+        i->first = 3;
+        C::const_iterator j = i;
+        assert(j->first == 3);
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::vector<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+        assert (!(ii1 <  cii ));
+        assert (!(cii <  ii1 ));
+        assert ( (ii1 <= cii ));
+        assert ( (cii <= ii1 ));
+        assert (!(ii1 >  cii ));
+        assert (!(cii >  ii1 ));
+        assert ( (ii1 >= cii ));
+        assert ( (cii >= ii1 ));
+        assert (cii - ii1 == 0);
+        assert (ii1 - cii == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..36c68f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// vector
+
+#include <vector>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::vector<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::random_access_range<range>);
+static_assert(std::ranges::contiguous_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::random_access_range<range const>);
+static_assert(std::ranges::contiguous_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/reverse_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/reverse_iterators.pass.cpp
new file mode 100644
index 0000000..1591f91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/reverse_iterators.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// reverse_iterator       rbegin();
+// reverse_iterator       rend();
+// const_reverse_iterator rbegin()  const;
+// const_reverse_iterator rend()    const;
+// const_reverse_iterator crbegin() const;
+// const_reverse_iterator crend()   const;
+
+#include <vector>
+#include <cassert>
+#include <iterator>
+
+#include "min_allocator.h"
+
+template <class Vector>
+TEST_CONSTEXPR_CXX20 void check_vector_reverse_iterators() {
+    {
+        Vector vec;
+        assert(vec.rbegin() == vec.rend());
+        assert(vec.crbegin() == vec.crend());
+    }
+    {
+        const int n = 10;
+        Vector vec;
+        const Vector& cvec = vec;
+        vec.reserve(n);
+        for (int i = 0; i < n; ++i)
+            vec.push_back(i);
+        {
+            int iterations = 0;
+
+            for (typename Vector::const_reverse_iterator it = vec.crbegin(); it != vec.crend(); ++it) {
+                assert(*it == (n - iterations - 1));
+                ++iterations;
+            }
+            assert(iterations == n);
+        }
+        {
+            assert(cvec.rbegin() == vec.crbegin());
+            assert(cvec.rend() == vec.crend());
+        }
+        {
+            int iterations = 0;
+
+            for (typename Vector::reverse_iterator it = vec.rbegin(); it != vec.rend(); ++it) {
+                assert(*it == (n - iterations - 1));
+                *it = 40;
+                assert(*it == 40);
+                ++iterations;
+            }
+            assert(iterations == n);
+        }
+
+        assert(std::distance(vec.rbegin(), vec.rend()) == n);
+        assert(std::distance(cvec.rbegin(), cvec.rend()) == n);
+        assert(std::distance(vec.crbegin(), vec.crend()) == n);
+        assert(std::distance(cvec.crbegin(), cvec.crend()) == n);
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    check_vector_reverse_iterators<std::vector<int> >();
+#if TEST_STD_VER >= 11
+    check_vector_reverse_iterators<std::vector<int, min_allocator<int> > >();
+#endif
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/types.pass.cpp
new file mode 100644
index 0000000..4bcfbe7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/types.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// Test nested types and default template args:
+
+// template <class T, class Allocator = allocator<T> >
+// class vector
+// {
+// public:
+//     typedef T                                        value_type;
+//     typedef Allocator                                allocator_type;
+//     typedef typename allocator_type::reference       reference;
+//     typedef typename allocator_type::const_reference const_reference;
+//     typedef implementation-defined                   iterator;
+//     typedef implementation-defined                   const_iterator;
+//     typedef typename allocator_type::size_type       size_type;
+//     typedef typename allocator_type::difference_type difference_type;
+//     typedef typename allocator_type::pointer         pointer;
+//     typedef typename allocator_type::const_pointer   const_pointer;
+//     typedef std::reverse_iterator<iterator>          reverse_iterator;
+//     typedef std::reverse_iterator<const_iterator>    const_reverse_iterator;
+// };
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_ALLOCATOR_MEMBERS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <vector>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../Copyable.h"
+#include "min_allocator.h"
+
+struct A { std::vector<A> v; }; // incomplete type support
+
+template <class T, class Allocator>
+void
+test()
+{
+    typedef std::vector<T, Allocator> C;
+
+//  TODO: These tests should use allocator_traits to get stuff, rather than
+//  blindly pulling typedefs out of the allocator. This is why we can't call
+//  test<int, min_allocator<int>>() below.
+    static_assert((std::is_same<typename C::value_type, T>::value), "");
+    static_assert((std::is_same<typename C::value_type, typename Allocator::value_type>::value), "");
+    static_assert((std::is_same<typename C::allocator_type, Allocator>::value), "");
+    static_assert((std::is_same<typename C::size_type, typename Allocator::size_type>::value), "");
+    static_assert((std::is_same<typename C::difference_type, typename Allocator::difference_type>::value), "");
+    static_assert((std::is_same<typename C::reference, typename Allocator::reference>::value), "");
+    static_assert((std::is_same<typename C::const_reference, typename Allocator::const_reference>::value), "");
+    static_assert((std::is_same<typename C::pointer, typename Allocator::pointer>::value), "");
+    static_assert((std::is_same<typename C::const_pointer, typename Allocator::const_pointer>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+//     static_assert((std::is_same<typename C::difference_type,
+//         typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+//     static_assert((std::is_same<typename C::difference_type,
+//         typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename C::iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename C::const_iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename C::reverse_iterator,
+        std::reverse_iterator<typename C::iterator> >::value), "");
+    static_assert((std::is_same<
+        typename C::const_reverse_iterator,
+        std::reverse_iterator<typename C::const_iterator> >::value), "");
+}
+
+int main(int, char**)
+{
+    test<int, test_allocator<int> >();
+    test<int*, std::allocator<int*> >();
+    test<Copyable, test_allocator<Copyable> >();
+    static_assert((std::is_same<std::vector<char>::allocator_type,
+                                std::allocator<char> >::value), "");
+#if TEST_STD_VER >= 11
+    {
+
+    typedef std::vector<int, min_allocator<int> > C;
+    static_assert((std::is_same<C::value_type, int>::value), "");
+    static_assert((std::is_same<C::allocator_type, min_allocator<int> >::value), "");
+    static_assert((std::is_same<C::reference, int&>::value), "");
+    static_assert((std::is_same<C::const_reference, const int&>::value), "");
+    static_assert((std::is_same<C::pointer, min_pointer<int>>::value), "");
+    static_assert((std::is_same<C::const_pointer, min_pointer<const int>>::value), "");
+
+    static_assert((std::is_signed<typename C::difference_type>::value), "");
+    static_assert((std::is_unsigned<typename C::size_type>::value), "");
+//     static_assert((std::is_same<typename C::difference_type,
+//         typename std::iterator_traits<typename C::iterator>::difference_type>::value), "");
+//     static_assert((std::is_same<typename C::difference_type,
+//         typename std::iterator_traits<typename C::const_iterator>::difference_type>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/capacity.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/capacity.pass.cpp
new file mode 100644
index 0000000..b2eb33c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/capacity.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// size_type capacity() const;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<int> v;
+        assert(v.capacity() == 0);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int> v(100);
+        assert(v.capacity() == 100);
+        v.push_back(0);
+        assert(v.capacity() > 101);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v;
+        assert(v.capacity() == 0);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        assert(v.capacity() == 100);
+        v.push_back(0);
+        assert(v.capacity() > 101);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/empty.pass.cpp
new file mode 100644
index 0000000..cc5f3bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/empty.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// bool empty() const noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+    typedef std::vector<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.empty());
+    assert(c.empty());
+    c.push_back(C::value_type(1));
+    assert(!c.empty());
+    c.clear();
+    assert(c.empty());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/empty.verify.cpp
new file mode 100644
index 0000000..df3b496
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::vector<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/max_size.pass.cpp
new file mode 100644
index 0000000..3f8d62e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/max_size.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <type_traits>
+#include <vector>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef limited_allocator<int, 10> A;
+    typedef std::vector<int, A> C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<int, (size_t)-1> A;
+    typedef std::vector<int, A> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+  }
+  {
+    typedef std::vector<char> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/reserve.pass.cpp
new file mode 100644
index 0000000..99c4896
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/reserve.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void reserve(size_type n);
+
+#include <vector>
+#include <cassert>
+#include <stdexcept>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int> v;
+        v.reserve(10);
+        assert(v.capacity() >= 10);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int> v(100);
+        assert(v.capacity() == 100);
+        v.reserve(50);
+        assert(v.size() == 100);
+        assert(v.capacity() == 100);
+        v.reserve(150);
+        assert(v.size() == 100);
+        assert(v.capacity() == 150);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        // Add 1 for implementations that dynamically allocate a container proxy.
+        std::vector<int, limited_allocator<int, 250 + 1> > v(100);
+        assert(v.capacity() == 100);
+        v.reserve(50);
+        assert(v.size() == 100);
+        assert(v.capacity() == 100);
+        v.reserve(150);
+        assert(v.size() == 100);
+        assert(v.capacity() == 150);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        std::vector<int> v;
+        size_t sz = v.max_size() + 1;
+
+        try {
+            v.reserve(sz);
+            assert(false);
+        } catch (const std::length_error&) {
+            assert(v.size() == 0);
+            assert(v.capacity() == 0);
+        }
+    }
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        std::vector<int> v(10, 42);
+        int* previous_data = v.data();
+        size_t previous_capacity = v.capacity();
+        size_t sz = v.max_size() + 1;
+
+        try {
+            v.reserve(sz);
+            assert(false);
+        } catch (std::length_error&) {
+            assert(v.size() == 10);
+            assert(v.capacity() == previous_capacity);
+            assert(v.data() == previous_data);
+
+            for (int i = 0; i < 10; ++i) {
+                assert(v[i] == 42);
+            }
+        }
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v;
+        v.reserve(10);
+        assert(v.capacity() >= 10);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        assert(v.capacity() == 100);
+        v.reserve(50);
+        assert(v.size() == 100);
+        assert(v.capacity() == 100);
+        v.reserve(150);
+        assert(v.size() == 100);
+        assert(v.capacity() == 150);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        std::vector<int, limited_allocator<int, 100> > v;
+        v.reserve(50);
+        assert(v.capacity() == 50);
+        assert(is_contiguous_container_asan_correct(v));
+        try {
+            v.reserve(101);
+            assert(false);
+        } catch (const std::length_error&) {
+            // no-op
+        }
+        assert(v.capacity() == 50);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+  tests();
+
+#if TEST_STD_VER > 17
+  static_assert(tests());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size.pass.cpp
new file mode 100644
index 0000000..0b9db8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void resize(size_type sz);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int> v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        // Add 1 for implementations that dynamically allocate a container proxy.
+        std::vector<int, limited_allocator<int, 300 + 1> > v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<MoveOnly> v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        // Add 1 for implementations that dynamically allocate a container proxy.
+        std::vector<MoveOnly, limited_allocator<MoveOnly, 300 + 1> > v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<MoveOnly, min_allocator<MoveOnly>> v(100);
+        v.resize(50);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        v.resize(200);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size_value.pass.cpp
new file mode 100644
index 0000000..c019798
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size_value.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void resize(size_type sz, const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int> v(100);
+        v.resize(50, 1);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(v == std::vector<int>(50));
+        v.resize(200, 1);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+        for (unsigned i = 0; i < 50; ++i)
+            assert(v[i] == 0);
+        for (unsigned i = 50; i < 200; ++i)
+            assert(v[i] == 1);
+    }
+    {
+        // Add 1 for implementations that dynamically allocate a container proxy.
+        std::vector<int, limited_allocator<int, 300 + 1> > v(100);
+        v.resize(50, 1);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        v.resize(200, 1);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        v.resize(50, 1);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        assert((v == std::vector<int, min_allocator<int>>(50)));
+        v.resize(200, 1);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+        for (unsigned i = 0; i < 50; ++i)
+            assert(v[i] == 0);
+        for (unsigned i = 50; i < 200; ++i)
+            assert(v[i] == 1);
+    }
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        v.resize(50, 1);
+        assert(v.size() == 50);
+        assert(v.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v));
+        v.resize(200, 1);
+        assert(v.size() == 200);
+        assert(v.capacity() >= 200);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp
new file mode 100644
index 0000000..3f24879
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void shrink_to_fit();
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int> v(100);
+        v.push_back(1);
+        assert(is_contiguous_container_asan_correct(v));
+        v.shrink_to_fit();
+        assert(v.capacity() == 101);
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int, limited_allocator<int, 401> > v(100);
+        v.push_back(1);
+        assert(is_contiguous_container_asan_correct(v));
+        v.shrink_to_fit();
+        assert(v.capacity() == 101);
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+        std::vector<int, limited_allocator<int, 400> > v(100);
+        v.push_back(1);
+        assert(is_contiguous_container_asan_correct(v));
+        v.shrink_to_fit();
+        LIBCPP_ASSERT(v.capacity() == 200); // assumes libc++'s 2x growth factor
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        v.push_back(1);
+        assert(is_contiguous_container_asan_correct(v));
+        v.shrink_to_fit();
+        assert(v.capacity() == 101);
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/size.pass.cpp
new file mode 100644
index 0000000..aa41da6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/size.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// class vector
+
+// size_type size() const noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    typedef std::vector<int> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(C::value_type(2));
+    assert(c.size() == 1);
+    c.push_back(C::value_type(1));
+    assert(c.size() == 2);
+    c.push_back(C::value_type(3));
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<int, min_allocator<int>> C;
+    C c;
+    ASSERT_NOEXCEPT(c.size());
+    assert(c.size() == 0);
+    c.push_back(C::value_type(2));
+    assert(c.size() == 1);
+    c.push_back(C::value_type(1));
+    assert(c.size() == 2);
+    c.push_back(C::value_type(3));
+    assert(c.size() == 3);
+    c.erase(c.begin());
+    assert(c.size() == 2);
+    c.erase(c.begin());
+    assert(c.size() == 1);
+    c.erase(c.begin());
+    assert(c.size() == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/swap.pass.cpp
new file mode 100644
index 0000000..47a0435
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.capacity/swap.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void swap(vector& x);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int> v1(100);
+        std::vector<int> v2(200);
+        assert(is_contiguous_container_asan_correct(v1));
+        assert(is_contiguous_container_asan_correct(v2));
+        v1.swap(v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() == 200);
+        assert(is_contiguous_container_asan_correct(v1));
+        assert(v2.size() == 100);
+        assert(v2.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v2));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v1(100);
+        std::vector<int, min_allocator<int>> v2(200);
+        assert(is_contiguous_container_asan_correct(v1));
+        assert(is_contiguous_container_asan_correct(v2));
+        v1.swap(v2);
+        assert(v1.size() == 200);
+        assert(v1.capacity() == 200);
+        assert(is_contiguous_container_asan_correct(v1));
+        assert(v2.size() == 100);
+        assert(v2.capacity() == 100);
+        assert(is_contiguous_container_asan_correct(v2));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..ceecdfd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector& operator=(const vector& c);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> vo;
+  std::vector<operator_hijacker> v;
+  v = vo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_copy.pass.cpp
new file mode 100644
index 0000000..f5b461b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_copy.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector& operator=(const vector& c);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "allocators.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int, test_allocator<int> > l(3, 2, test_allocator<int>(5));
+        std::vector<int, test_allocator<int> > l2(l, test_allocator<int>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<int>(3));
+    }
+    {
+        std::vector<int, other_allocator<int> > l(3, 2, other_allocator<int>(5));
+        std::vector<int, other_allocator<int> > l2(l, other_allocator<int>(3));
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(5));
+    }
+#if TEST_STD_VER >= 11
+    {
+        // Test with Allocator::propagate_on_container_copy_assignment == false_type
+        using Alloc = NonPOCCAAllocator<int>;
+        bool copy_assigned_into = false;
+        std::vector<int, Alloc> l(3, 2, Alloc(5, nullptr));
+        std::vector<int, Alloc> l2(l, Alloc(3, &copy_assigned_into));
+        assert(!copy_assigned_into);
+        l2 = l;
+        assert(!copy_assigned_into);
+        assert(l2 == l);
+        assert(l2.get_allocator() == Alloc(3, nullptr));
+    }
+    {
+        // Test with Allocator::propagate_on_container_copy_assignment == true_type
+        // and equal allocators
+        using Alloc = POCCAAllocator<int>;
+        bool copy_assigned_into = false;
+        std::vector<int, Alloc> l(3, 2, Alloc(5, nullptr));
+        std::vector<int, Alloc> l2(l, Alloc(5, &copy_assigned_into));
+        assert(!copy_assigned_into);
+        l2 = l;
+        assert(copy_assigned_into);
+        assert(l2 == l);
+        assert(l2.get_allocator() == Alloc(5, nullptr));
+    }
+    {
+        // Test with Allocator::propagate_on_container_copy_assignment == true_type
+        // and unequal allocators
+        using Alloc = POCCAAllocator<int>;
+        bool copy_assigned_into = false;
+        std::vector<int, Alloc> l(3, 2, Alloc(5, nullptr));
+        std::vector<int, Alloc> l2(l, Alloc(3, &copy_assigned_into));
+        assert(!copy_assigned_into);
+        l2 = l;
+        assert(copy_assigned_into);
+        assert(l2 == l);
+        assert(l2.get_allocator() == Alloc(5, nullptr));
+    }
+    {
+        std::vector<int, min_allocator<int> > l(3, 2, min_allocator<int>());
+        std::vector<int, min_allocator<int> > l2(l, min_allocator<int>());
+        l2 = l;
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<int>());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_initializer_list.pass.cpp
new file mode 100644
index 0000000..19a1b77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_initializer_list.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// void assign(initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+template <typename Vec>
+TEST_CONSTEXPR_CXX20 void test(Vec &v)
+{
+    v.assign({3, 4, 5, 6});
+    assert(v.size() == 4);
+    assert(is_contiguous_container_asan_correct(v));
+    assert(v[0] == 3);
+    assert(v[1] == 4);
+    assert(v[2] == 5);
+    assert(v[3] == 6);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+    typedef std::vector<int> V;
+    V d1;
+    V d2;
+    d2.reserve(10);  // no reallocation during assign.
+    test(d1);
+    test(d2);
+    }
+    {
+    typedef std::vector<int, min_allocator<int>> V;
+    V d1;
+    V d2;
+    d2.reserve(10);  // no reallocation during assign.
+    test(d1);
+    test(d2);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_iter_iter.pass.cpp
new file mode 100644
index 0000000..4daa320
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_iter_iter.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void assign(size_type n, const_reference v);
+
+#include <vector>
+#include <algorithm>
+#include <cassert>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+#include "test_iterators.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#include "container_test_types.h"
+#endif
+
+
+TEST_CONSTEXPR_CXX20 bool test() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructibleMoveableAndAssignable<int>;
+    using It = forward_iterator<int*>;
+    {
+      std::vector<T> v;
+      v.assign(It(arr1), It(std::end(arr1)));
+      assert(v[0].value == 42);
+    }
+    {
+      std::vector<T> v;
+      v.assign(It(arr2), It(std::end(arr2)));
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructibleMoveableAndAssignable<int>;
+    using It = cpp17_input_iterator<int*>;
+    {
+      std::vector<T> v;
+      v.assign(It(arr1), It(std::end(arr1)));
+      assert(v[0].copied == 0);
+      assert(v[0].value == 42);
+    }
+    {
+      std::vector<T> v;
+      v.assign(It(arr2), It(std::end(arr2)));
+      //assert(v[0].copied == 0);
+      assert(v[0].value == 1);
+      //assert(v[1].copied == 0);
+      assert(v[1].value == 101);
+      assert(v[2].copied == 0);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+
+  // Test with a number of elements in the source range that is greater than capacity
+  {
+    typedef forward_iterator<int*> It;
+
+    std::vector<int> dst(10);
+
+    size_t n = dst.capacity() * 2;
+    std::vector<int> src(n);
+
+    dst.assign(It(src.data()), It(src.data() + src.size()));
+    assert(dst == src);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..168a9e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_move.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector& operator=(vector&& c);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> vo;
+  std::vector<operator_hijacker> v;
+  v = std::move(vo);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_move.pass.cpp
new file mode 100644
index 0000000..e6eba51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_move.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// vector& operator=(vector&& c);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l2(test_allocator<MoveOnly>(5));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l2(test_allocator<MoveOnly>(6));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == test_allocator<MoveOnly>(6));
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, other_allocator<MoveOnly> > l2(other_allocator<MoveOnly>(6));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, min_allocator<MoveOnly> > l((min_allocator<MoveOnly>()));
+        std::vector<MoveOnly, min_allocator<MoveOnly> > lo((min_allocator<MoveOnly>()));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, min_allocator<MoveOnly> > l2((min_allocator<MoveOnly>()));
+        l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_size_value.pass.cpp
new file mode 100644
index 0000000..896aa40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/assign_size_value.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void assign(size_type n, const_reference v);
+
+#include <vector>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR bool is6(int x) { return x == 6; }
+
+template <typename Vec>
+TEST_CONSTEXPR_CXX20 void test(Vec &v)
+{
+    v.assign(5, 6);
+    assert(v.size() == 5);
+    assert(is_contiguous_container_asan_correct(v));
+    assert(std::all_of(v.begin(), v.end(), is6));
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+    typedef std::vector<int> V;
+    V d1;
+    V d2;
+    d2.reserve(10);  // no reallocation during assign.
+    test(d1);
+    test(d2);
+    }
+    {
+    std::vector<int> vec;
+    vec.reserve(32);
+    vec.resize(16); // destruction during assign
+    test(vec);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::vector<int, min_allocator<int>> V;
+    V d1;
+    V d2;
+    d2.reserve(10);  // no reallocation during assign.
+    test(d1);
+    test(d2);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_default.pass.cpp
new file mode 100644
index 0000000..9a135b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_default.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector();
+// vector(const Alloc&);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "../../../NotConstructible.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+#if TEST_STD_VER > 14
+    static_assert((noexcept(C{})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(C()) == noexcept(typename C::allocator_type())), "" );
+#endif
+    C c;
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.empty());
+    assert(c.get_allocator() == typename C::allocator_type());
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+#if TEST_STD_VER >= 11
+    C c1 = {};
+    LIBCPP_ASSERT(c1.__invariants());
+    assert(c1.empty());
+    assert(c1.get_allocator() == typename C::allocator_type());
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c1));
+#endif
+}
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test1(const typename C::allocator_type& a)
+{
+#if TEST_STD_VER > 14
+    static_assert((noexcept(C{typename C::allocator_type{}})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(C(typename C::allocator_type())) == std::is_nothrow_copy_constructible<typename C::allocator_type>::value), "" );
+#endif
+    C c(a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.empty());
+    assert(c.get_allocator() == a);
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+    test0<std::vector<int> >();
+    test0<std::vector<NotConstructible> >();
+    test1<std::vector<int, test_allocator<int> > >(test_allocator<int>(3));
+    test1<std::vector<NotConstructible, test_allocator<NotConstructible> > >
+        (test_allocator<NotConstructible>(5));
+    }
+    {
+        std::vector<int, limited_allocator<int, 10> > v;
+        assert(v.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    test0<std::vector<int, min_allocator<int>> >();
+    test0<std::vector<NotConstructible, min_allocator<NotConstructible>> >();
+    test1<std::vector<int, min_allocator<int> > >(min_allocator<int>{});
+    test1<std::vector<NotConstructible, min_allocator<NotConstructible> > >
+        (min_allocator<NotConstructible>{});
+    }
+    {
+        std::vector<int, min_allocator<int> > v;
+        assert(v.empty());
+    }
+
+    {
+    test0<std::vector<int, explicit_allocator<int>> >();
+    test0<std::vector<NotConstructible, explicit_allocator<NotConstructible>> >();
+    test1<std::vector<int, explicit_allocator<int> > >(explicit_allocator<int>{});
+    test1<std::vector<NotConstructible, explicit_allocator<NotConstructible> > >
+        (explicit_allocator<NotConstructible>{});
+    }
+    {
+        std::vector<int, explicit_allocator<int> > v;
+        assert(v.empty());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp
new file mode 100644
index 0000000..0f2fb36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp
@@ -0,0 +1,208 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class InputIter> vector(InputIter first, InputIter last);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#include "container_test_types.h"
+#endif
+
+template <class C, class Iterator>
+TEST_CONSTEXPR_CXX20 void test(Iterator first, Iterator last) {
+  {
+    C c(first, last);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == static_cast<std::size_t>(std::distance(first, last)));
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e;
+      ++i, ++first)
+    assert(*i == *first);
+  }
+  // Test with an empty range
+  {
+    C c(first, first);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.empty());
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+  }
+}
+
+TEST_CONSTEXPR_CXX20 void basic_test_cases() {
+  int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+  int* an = a + sizeof(a) / sizeof(a[0]);
+  test<std::vector<int> >(cpp17_input_iterator<const int*>(a),
+                          cpp17_input_iterator<const int*>(an));
+  test<std::vector<int> >(forward_iterator<const int*>(a),
+                          forward_iterator<const int*>(an));
+  test<std::vector<int> >(bidirectional_iterator<const int*>(a),
+                          bidirectional_iterator<const int*>(an));
+  test<std::vector<int> >(random_access_iterator<const int*>(a),
+                          random_access_iterator<const int*>(an));
+  test<std::vector<int> >(a, an);
+
+  test<std::vector<int, limited_allocator<int, 63> > >(
+      cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an));
+  // Add 1 for implementations that dynamically allocate a container proxy.
+  test<std::vector<int, limited_allocator<int, 18 + 1> > >(
+      forward_iterator<const int*>(a), forward_iterator<const int*>(an));
+  test<std::vector<int, limited_allocator<int, 18 + 1> > >(
+      bidirectional_iterator<const int*>(a),
+      bidirectional_iterator<const int*>(an));
+  test<std::vector<int, limited_allocator<int, 18 + 1> > >(
+      random_access_iterator<const int*>(a),
+      random_access_iterator<const int*>(an));
+  test<std::vector<int, limited_allocator<int, 18 + 1> > >(a, an);
+#if TEST_STD_VER >= 11
+  test<std::vector<int, min_allocator<int> > >(cpp17_input_iterator<const int*>(a),
+                                               cpp17_input_iterator<const int*>(an));
+  test<std::vector<int, min_allocator<int> > >(
+      forward_iterator<const int*>(a), forward_iterator<const int*>(an));
+  test<std::vector<int, min_allocator<int> > >(
+      bidirectional_iterator<const int*>(a),
+      bidirectional_iterator<const int*>(an));
+  test<std::vector<int, min_allocator<int> > >(
+      random_access_iterator<const int*>(a),
+      random_access_iterator<const int*>(an));
+  test<std::vector<int> >(a, an);
+#endif
+}
+
+TEST_CONSTEXPR_CXX20 void emplaceable_concept_tests() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructible<int>;
+    using It = forward_iterator<int*>;
+    {
+      std::vector<T> v(It(arr1), It(std::end(arr1)));
+      assert(v[0].value == 42);
+    }
+    {
+      std::vector<T> v(It(arr2), It(std::end(arr2)));
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructibleAndMoveInsertable<int>;
+    using It = cpp17_input_iterator<int*>;
+    {
+      std::vector<T> v(It(arr1), It(std::end(arr1)));
+      assert(v[0].copied == 0);
+      assert(v[0].value == 42);
+    }
+    {
+      std::vector<T> v(It(arr2), It(std::end(arr2)));
+      //assert(v[0].copied == 0);
+      assert(v[0].value == 1);
+      //assert(v[1].copied == 0);
+      assert(v[1].value == 101);
+      assert(v[2].copied == 0);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+}
+
+void test_ctor_under_alloc() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using C = TCT::vector<>;
+    using It = forward_iterator<int*>;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)));
+    }
+    {
+      ExpectConstructGuard<int&> G(3);
+      C v(It(arr2), It(std::end(arr2)));
+    }
+  }
+  {
+    using C = TCT::vector<>;
+    using It = cpp17_input_iterator<int*>;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)));
+    }
+    {
+      //ExpectConstructGuard<int&> G(3);
+      //C v(It(arr2), It(std::end(arr2)), a);
+    }
+  }
+#endif
+}
+
+// In C++03, you can't instantiate a template with a local type.
+struct B1 { int x; };
+struct B2 { int y; };
+struct Der : B1, B2 { int z; };
+
+// Initialize a vector with a different value type.
+TEST_CONSTEXPR_CXX20 void test_ctor_with_different_value_type() {
+  {
+    // Make sure initialization is performed with each element value, not with
+    // a memory blob.
+    float array[3] = {0.0f, 1.0f, 2.0f};
+    TEST_DIAGNOSTIC_PUSH
+    TEST_MSVC_DIAGNOSTIC_IGNORED(4244) // conversion from 'float' to 'int', possible loss of data
+    std::vector<int> v(array, array + 3);
+    TEST_DIAGNOSTIC_POP
+    assert(v[0] == 0);
+    assert(v[1] == 1);
+    assert(v[2] == 2);
+  }
+  {
+    Der z;
+    Der *array[1] = { &z };
+    // Though the types Der* and B2* are very similar, initialization still cannot
+    // be done with `memcpy`.
+    std::vector<B2*> v(array, array + 1);
+    assert(v[0] == &z);
+  }
+  {
+    // Though the types are different, initialization can be done with `memcpy`.
+    int32_t array[1] = { -1 };
+    std::vector<uint32_t> v(array, array + 1);
+    assert(v[0] == 4294967295U);
+  }
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+  basic_test_cases();
+  emplaceable_concept_tests(); // See PR34898
+  test_ctor_with_different_value_type();
+
+  return true;
+}
+
+int main(int, char**)
+{
+    tests();
+    test_ctor_under_alloc();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
new file mode 100644
index 0000000..5d38543
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter_alloc.pass.cpp
@@ -0,0 +1,180 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class InputIter> vector(InputIter first, InputIter last,
+//                                   const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+#if TEST_STD_VER >= 11
+#include "emplace_constructible.h"
+#include "container_test_types.h"
+#endif
+
+template <class C, class Iterator, class A>
+TEST_CONSTEXPR_CXX20 void test(Iterator first, Iterator last, const A& a) {
+  C c(first, last, a);
+  LIBCPP_ASSERT(c.__invariants());
+  assert(c.size() == static_cast<std::size_t>(std::distance(first, last)));
+  LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+  for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e;
+       ++i, ++first)
+    assert(*i == *first);
+}
+
+#if TEST_STD_VER >= 11
+
+template <class T>
+struct implicit_conv_allocator : min_allocator<T> {
+  TEST_CONSTEXPR implicit_conv_allocator(void*) {}
+  TEST_CONSTEXPR implicit_conv_allocator(const implicit_conv_allocator&) = default;
+
+  template <class U>
+  TEST_CONSTEXPR implicit_conv_allocator(implicit_conv_allocator<U>) {}
+};
+
+#endif
+
+TEST_CONSTEXPR_CXX20 void basic_tests() {
+  {
+    int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+    int* an = a + sizeof(a) / sizeof(a[0]);
+    std::allocator<int> alloc;
+    test<std::vector<int> >(cpp17_input_iterator<const int*>(a),
+                            cpp17_input_iterator<const int*>(an), alloc);
+    test<std::vector<int> >(forward_iterator<const int*>(a),
+                            forward_iterator<const int*>(an), alloc);
+    test<std::vector<int> >(bidirectional_iterator<const int*>(a),
+                            bidirectional_iterator<const int*>(an), alloc);
+    test<std::vector<int> >(random_access_iterator<const int*>(a),
+                            random_access_iterator<const int*>(an), alloc);
+    test<std::vector<int> >(a, an, alloc);
+  }
+#if TEST_STD_VER >= 11
+  {
+    int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+    int* an = a + sizeof(a) / sizeof(a[0]);
+    min_allocator<int> alloc;
+    test<std::vector<int, min_allocator<int> > >(
+        cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an), alloc);
+    test<std::vector<int, min_allocator<int> > >(
+        forward_iterator<const int*>(a), forward_iterator<const int*>(an),
+        alloc);
+    test<std::vector<int, min_allocator<int> > >(
+        bidirectional_iterator<const int*>(a),
+        bidirectional_iterator<const int*>(an), alloc);
+    test<std::vector<int, min_allocator<int> > >(
+        random_access_iterator<const int*>(a),
+        random_access_iterator<const int*>(an), alloc);
+    test<std::vector<int, min_allocator<int> > >(a, an, alloc);
+    test<std::vector<int, implicit_conv_allocator<int> > >(a, an, nullptr);
+  }
+#endif
+}
+
+TEST_CONSTEXPR_CXX20 void emplaceable_concept_tests() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using T = EmplaceConstructible<int>;
+    using It = forward_iterator<int*>;
+    using Alloc = std::allocator<T>;
+    Alloc a;
+    {
+      std::vector<T> v(It(arr1), It(std::end(arr1)), a);
+      assert(v[0].value == 42);
+    }
+    {
+      std::vector<T> v(It(arr2), It(std::end(arr2)), a);
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].value == 42);
+    }
+  }
+  {
+    using T = EmplaceConstructibleAndMoveInsertable<int>;
+    using It = cpp17_input_iterator<int*>;
+    using Alloc = std::allocator<T>;
+    Alloc a;
+    {
+      std::vector<T> v(It(arr1), It(std::end(arr1)), a);
+      assert(v[0].copied == 0);
+      assert(v[0].value == 42);
+    }
+    {
+      std::vector<T> v(It(arr2), It(std::end(arr2)), a);
+      assert(v[0].value == 1);
+      assert(v[1].value == 101);
+      assert(v[2].copied == 0);
+      assert(v[2].value == 42);
+    }
+  }
+#endif
+}
+
+void test_ctor_under_alloc() {
+#if TEST_STD_VER >= 11
+  int arr1[] = {42};
+  int arr2[] = {1, 101, 42};
+  {
+    using C = TCT::vector<>;
+    using It = forward_iterator<int*>;
+    using Alloc = typename C::allocator_type;
+    Alloc a;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)), a);
+    }
+    {
+      ExpectConstructGuard<int&> G(3);
+      C v(It(arr2), It(std::end(arr2)), a);
+    }
+  }
+  {
+    using C = TCT::vector<>;
+    using It = cpp17_input_iterator<int*>;
+    using Alloc = typename C::allocator_type;
+    Alloc a;
+    {
+      ExpectConstructGuard<int&> G(1);
+      C v(It(arr1), It(std::end(arr1)), a);
+    }
+    {
+      //ExpectConstructGuard<int&> G(3);
+      //C v(It(arr2), It(std::end(arr2)), a);
+    }
+  }
+#endif
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  basic_tests();
+  emplaceable_concept_tests(); // See PR34898
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+  test_ctor_under_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size.pass.cpp
new file mode 100644
index 0000000..e4b1f43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// explicit vector(size_type n);
+// explicit vector(size_type n, const Allocator& alloc = Allocator());
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "asan_testing.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20
+void test(typename C::size_type n,
+          typename C::allocator_type const& a = typename C::allocator_type())
+{
+    (void)a;
+    // Test without a custom allocator
+    {
+        C c(n);
+        LIBCPP_ASSERT(c.__invariants());
+        assert(c.size() == n);
+        assert(c.get_allocator() == typename C::allocator_type());
+        LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+#if TEST_STD_VER >= 11
+        for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+            assert(*i == typename C::value_type());
+#endif
+    }
+
+    // Test with a custom allocator
+#if TEST_STD_VER >= 14
+    {
+        C c(n, a);
+        LIBCPP_ASSERT(c.__invariants());
+        assert(c.size() == n);
+        assert(c.get_allocator() == a);
+        LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+        for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+            assert(*i == typename C::value_type());
+    }
+#endif
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    test<std::vector<int> >(0);
+    test<std::vector<int> >(50);
+#if TEST_STD_VER >= 11
+    test<std::vector<int, min_allocator<int>>>(0);
+    test<std::vector<int, min_allocator<int>>>(50);
+#endif
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    test<std::vector<DefaultOnly> >(0);
+    test<std::vector<DefaultOnly> >(500);
+    assert(DefaultOnly::count == 0);
+
+#if TEST_STD_VER >= 11
+    test<std::vector<DefaultOnly, min_allocator<DefaultOnly>>>(0);
+    test<std::vector<DefaultOnly, min_allocator<DefaultOnly>>>(500);
+    test<std::vector<DefaultOnly, test_allocator<DefaultOnly>>>(0, test_allocator<DefaultOnly>(23));
+    test<std::vector<DefaultOnly, test_allocator<DefaultOnly>>>(100, test_allocator<DefaultOnly>(23));
+    assert(DefaultOnly::count == 0);
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size_value.pass.cpp
new file mode 100644
index 0000000..7f7777c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size_value.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(size_type n, const value_type& x);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void
+test(typename C::size_type n, const typename C::value_type& x)
+{
+    C c(n, x);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == n);
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+        assert(*i == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    test<std::vector<int> >(0, 3);
+    test<std::vector<int> >(50, 3);
+    // Add 1 for implementations that dynamically allocate a container proxy.
+    test<std::vector<int, limited_allocator<int, 50 + 1> > >(0, 5);
+    test<std::vector<int, limited_allocator<int, 50 + 1> > >(50, 5);
+    test<std::vector<int, limited_allocator<int, 50 + 1> > >(50, 5);
+#if TEST_STD_VER >= 11
+    test<std::vector<int, min_allocator<int>> >(0, 3);
+    test<std::vector<int, min_allocator<int>> >(50, 3);
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size_value_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size_value_alloc.pass.cpp
new file mode 100644
index 0000000..17d3a58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size_value_alloc.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(size_type n, const value_type& x, const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void
+test(typename C::size_type n, const typename C::value_type& x,
+     const typename C::allocator_type& a)
+{
+    C c(n, x, a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(a == c.get_allocator());
+    assert(c.size() == n);
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+    for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
+        assert(*i == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    test<std::vector<int> >(0, 3, std::allocator<int>());
+    test<std::vector<int> >(50, 3, std::allocator<int>());
+#if TEST_STD_VER >= 11
+    test<std::vector<int, min_allocator<int>> >(0, 3, min_allocator<int>());
+    test<std::vector<int, min_allocator<int>> >(50, 3, min_allocator<int>());
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy.move_only.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy.move_only.verify.cpp
new file mode 100644
index 0000000..9130104
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy.move_only.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that a std::vector containing move-only types can't be copied.
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+#include <vector>
+
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    std::vector<MoveOnly> v;
+    std::vector<MoveOnly> copy = v; // expected-error-re@* {{{{(no matching function for call to 'construct_at')|(call to implicitly-deleted copy constructor of 'MoveOnly')|(call to deleted constructor of 'MoveOnly')}}}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy.pass.cpp
new file mode 100644
index 0000000..88822e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(const vector& v);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void
+test(const C& x)
+{
+    typename C::size_type s = x.size();
+    C c(x);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == s);
+    assert(c == x);
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+        int* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<int>(a, an));
+    }
+    {
+        std::vector<int, test_allocator<int> > v(3, 2, test_allocator<int>(5));
+        std::vector<int, test_allocator<int> > v2 = v;
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+    }
+    {
+        // Test copy ctor with empty source
+        std::vector<int, test_allocator<int> > v(test_allocator<int>(5));
+        std::vector<int, test_allocator<int> > v2 = v;
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+        assert(v2.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, other_allocator<int> > v(3, 2, other_allocator<int>(5));
+        std::vector<int, other_allocator<int> > v2 = v;
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+        assert(v2 == v);
+        assert(v2.get_allocator() == other_allocator<int>(-2));
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+    }
+    {
+        int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+        int* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<int, min_allocator<int>>(a, an));
+    }
+    {
+        std::vector<int, min_allocator<int> > v(3, 2, min_allocator<int>());
+        std::vector<int, min_allocator<int> > v2 = v;
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+        assert(v2 == v);
+        assert(v2.get_allocator() == v.get_allocator());
+        assert(is_contiguous_container_asan_correct(v));
+        assert(is_contiguous_container_asan_correct(v2));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..70434bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/copy_alloc.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(const vector& v, const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void
+test(const C& x, const typename C::allocator_type& a)
+{
+    typename C::size_type s = x.size();
+    C c(x, a);
+    LIBCPP_ASSERT(c.__invariants());
+    assert(c.size() == s);
+    assert(c == x);
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+        int* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<int>(a, an), std::allocator<int>());
+    }
+    {
+        std::vector<int, test_allocator<int> > l(3, 2, test_allocator<int>(5));
+        std::vector<int, test_allocator<int> > l2(l, test_allocator<int>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == test_allocator<int>(3));
+    }
+    {
+        std::vector<int, other_allocator<int> > l(3, 2, other_allocator<int>(5));
+        std::vector<int, other_allocator<int> > l2(l, other_allocator<int>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(3));
+    }
+    {
+        // Test copy ctor with allocator and empty source
+        std::vector<int, other_allocator<int> > l(other_allocator<int>(5));
+        std::vector<int, other_allocator<int> > l2(l, other_allocator<int>(3));
+        assert(l2 == l);
+        assert(l2.get_allocator() == other_allocator<int>(3));
+        assert(l2.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+        int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
+        int* an = a + sizeof(a)/sizeof(a[0]);
+        test(std::vector<int, min_allocator<int>>(a, an), min_allocator<int>());
+    }
+    {
+        std::vector<int, min_allocator<int> > l(3, 2, min_allocator<int>());
+        std::vector<int, min_allocator<int> > l2(l, min_allocator<int>());
+        assert(l2 == l);
+        assert(l2.get_allocator() == min_allocator<int>());
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/deduct.fail.cpp
new file mode 100644
index 0000000..7ce00d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/deduct.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    vector(InputIterator, InputIterator, Allocator = Allocator())
+//    -> vector<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <deque>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+
+//  Test the implicit deduction guides
+    {
+//  vector (allocator &)
+    std::vector vec((std::allocator<int>()));  // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'vector'}}
+//  Note: The extra parens are necessary, since otherwise clang decides it is a function declaration.
+//  Also, we can't use {} instead of parens, because that constructs a
+//      deque<allocator<int>, allocator<allocator<int>>>
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/deduct.pass.cpp
new file mode 100644
index 0000000..3aab782
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/deduct.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//    vector(InputIterator, InputIterator, Allocator = Allocator())
+//    -> vector<typename iterator_traits<InputIterator>::value_type, Allocator>;
+//
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+#include <climits> // INT_MAX
+#include <iterator>
+#include <type_traits>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+struct A {};
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+
+//  Test the explicit deduction guides
+    {
+    const int arr[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    std::vector vec(std::begin(arr), std::end(arr));
+
+    static_assert(std::is_same_v<decltype(vec), std::vector<int>>, "");
+    assert(std::equal(vec.begin(), vec.end(), std::begin(arr), std::end(arr)));
+    }
+
+    {
+    const long arr[] = {INT_MAX, 1L, 2L, 3L };
+    std::vector vec(std::begin(arr), std::end(arr), std::allocator<long>());
+    static_assert(std::is_same_v<decltype(vec)::value_type, long>, "");
+    assert(vec.size() == 4);
+    assert(vec[0] == INT_MAX);
+    assert(vec[1] == 1L);
+    assert(vec[2] == 2L);
+    }
+
+//  Test the implicit deduction guides
+
+    {
+//  We don't expect this one to work.
+//  std::vector vec(std::allocator<int>()); // vector (allocator &)
+    }
+
+    {
+    std::vector vec(1, A{}); // vector (size_type, T)
+    static_assert(std::is_same_v<decltype(vec)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(vec)::allocator_type, std::allocator<A>>, "");
+    assert(vec.size() == 1);
+    }
+
+    {
+    std::vector vec(1, A{}, test_allocator<A>()); // vector (size_type, T, allocator)
+    static_assert(std::is_same_v<decltype(vec)::value_type, A>, "");
+    static_assert(std::is_same_v<decltype(vec)::allocator_type, test_allocator<A>>, "");
+    assert(vec.size() == 1);
+    }
+
+    {
+    std::vector vec{1U, 2U, 3U, 4U, 5U}; // vector(initializer-list)
+    static_assert(std::is_same_v<decltype(vec)::value_type, unsigned>, "");
+    assert(vec.size() == 5);
+    assert(vec[2] == 3U);
+    }
+
+    {
+    std::vector vec({1.0, 2.0, 3.0, 4.0}, test_allocator<double>()); // vector(initializer-list, allocator)
+    static_assert(std::is_same_v<decltype(vec)::value_type, double>, "");
+    static_assert(std::is_same_v<decltype(vec)::allocator_type, test_allocator<double>>, "");
+    assert(vec.size() == 4);
+    assert(vec[3] == 4.0);
+    }
+
+    {
+    std::vector<long double> source;
+    std::vector vec(source); // vector(vector &)
+    static_assert(std::is_same_v<decltype(vec)::value_type, long double>, "");
+    static_assert(std::is_same_v<decltype(vec)::allocator_type, std::allocator<long double>>, "");
+    assert(vec.size() == 0);
+    }
+
+
+//  A couple of vector<bool> tests, too!
+    {
+    std::vector vec(3, true); // vector(initializer-list)
+    static_assert(std::is_same_v<decltype(vec)::value_type, bool>, "");
+    static_assert(std::is_same_v<decltype(vec)::allocator_type, std::allocator<bool>>, "");
+    assert(vec.size() == 3);
+    assert(vec[0] && vec[1] && vec[2]);
+    }
+
+    {
+    std::vector<bool> source;
+    std::vector vec(source); // vector(vector &)
+    static_assert(std::is_same_v<decltype(vec)::value_type, bool>, "");
+    static_assert(std::is_same_v<decltype(vec)::allocator_type, std::allocator<bool>>, "");
+    assert(vec.size() == 0);
+    }
+
+    {
+        typedef test_allocator<short> Alloc;
+        typedef test_allocator<int> ConvertibleToAlloc;
+
+        {
+        std::vector<short, Alloc> source;
+        std::vector vec(source, Alloc(2));
+        static_assert(std::is_same_v<decltype(vec), decltype(source)>);
+        }
+
+        {
+        std::vector<short, Alloc> source;
+        std::vector vec(source, ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(vec), decltype(source)>);
+        }
+
+        {
+        std::vector<short, Alloc> source;
+        std::vector vec(std::move(source), Alloc(2));
+        static_assert(std::is_same_v<decltype(vec), decltype(source)>);
+        }
+
+        {
+        std::vector<short, Alloc> source;
+        std::vector vec(std::move(source), ConvertibleToAlloc(2));
+        static_assert(std::is_same_v<decltype(vec), decltype(source)>);
+        }
+    }
+
+    SequenceContainerDeductionGuidesSfinaeAway<std::vector, std::vector<int>>();
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/default.recursive.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/default.recursive.pass.cpp
new file mode 100644
index 0000000..310f9cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/default.recursive.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+// class vector
+// vector();
+
+#include <vector>
+
+#include "test_macros.h"
+
+struct X
+{
+    std::vector<X> q;
+};
+
+int main(int, char**)
+{
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp
new file mode 100644
index 0000000..3bd4a16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/default_noexcept.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector()
+//        noexcept(is_nothrow_default_constructible<allocator_type>::value);
+
+// This *was* a conforming extension, but it was adopted in N4258.
+
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        typedef std::vector<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..7934759
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/dtor_noexcept.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// ~vector() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    ~some_alloc() noexcept(false);
+    void allocate(size_t);
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef std::vector<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<MoveOnly, some_alloc<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/exceptions.pass.cpp
new file mode 100644
index 0000000..1b7d62e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/exceptions.pass.cpp
@@ -0,0 +1,234 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// (bug report: https://llvm.org/PR58392)
+// Check that vector constructors don't leak memory when an operation inside the constructor throws an exception
+
+#include <cstddef>
+#include <type_traits>
+#include <vector>
+
+#include "count_new.h"
+#include "test_iterators.h"
+
+template <class T>
+struct Allocator {
+  using value_type      = T;
+  using is_always_equal = std::false_type;
+
+  template <class U>
+  Allocator(const Allocator<U>&) {}
+
+  Allocator(bool should_throw = true) {
+    if (should_throw)
+      throw 0;
+  }
+
+  T* allocate(std::size_t n) { return std::allocator<T>().allocate(n); }
+  void deallocate(T* ptr, std::size_t n) { std::allocator<T>().deallocate(ptr, n); }
+
+  template <class U>
+  friend bool operator==(const Allocator&, const Allocator<U>&) { return true; }
+};
+
+struct ThrowingT {
+  int* throw_after_n_ = nullptr;
+  ThrowingT() { throw 0; }
+
+  ThrowingT(int& throw_after_n) : throw_after_n_(&throw_after_n) {
+    if (throw_after_n == 0)
+      throw 0;
+    --throw_after_n;
+  }
+
+  ThrowingT(const ThrowingT&) {
+    if (throw_after_n_ == nullptr || *throw_after_n_ == 0)
+      throw 1;
+    --*throw_after_n_;
+  }
+
+  ThrowingT& operator=(const ThrowingT&) {
+    if (throw_after_n_ == nullptr || *throw_after_n_ == 0)
+      throw 1;
+    --*throw_after_n_;
+    return *this;
+  }
+};
+
+template <class IterCat>
+struct Iterator {
+  using iterator_category = IterCat;
+  using difference_type   = std::ptrdiff_t;
+  using value_type        = int;
+  using reference         = int&;
+  using pointer           = int*;
+
+  int i_;
+  Iterator(int i = 0) : i_(i) {}
+  int& operator*() {
+    if (i_ == 1)
+      throw 1;
+    return i_;
+  }
+
+  friend bool operator==(const Iterator& lhs, const Iterator& rhs) { return lhs.i_ == rhs.i_; }
+
+  friend bool operator!=(const Iterator& lhs, const Iterator& rhs) { return lhs.i_ != rhs.i_; }
+
+  Iterator& operator++() {
+    ++i_;
+    return *this;
+  }
+
+  Iterator operator++(int) {
+    auto tmp = *this;
+    ++i_;
+    return tmp;
+  }
+};
+
+void check_new_delete_called() {
+  assert(globalMemCounter.new_called == globalMemCounter.delete_called);
+  assert(globalMemCounter.new_array_called == globalMemCounter.delete_array_called);
+  assert(globalMemCounter.aligned_new_called == globalMemCounter.aligned_delete_called);
+  assert(globalMemCounter.aligned_new_array_called == globalMemCounter.aligned_delete_array_called);
+}
+
+int main(int, char**) {
+  using AllocVec = std::vector<int, Allocator<int> >;
+  try { // vector()
+    AllocVec vec;
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(size_type) from type
+    std::vector<ThrowingT> get_alloc(1);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+#if TEST_STD_VER >= 14
+  try { // Throw in vector(size_type, value_type) from type
+    int throw_after = 1;
+    ThrowingT v(throw_after);
+    std::vector<ThrowingT> get_alloc(1, v);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(size_type, const allocator_type&) from allocator
+    Allocator<int> alloc(false);
+    AllocVec get_alloc(0, alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(size_type, const allocator_type&) from the type
+    std::vector<ThrowingT> vec(1, std::allocator<ThrowingT>());
+  } catch (int) {
+  }
+  check_new_delete_called();
+#endif  // TEST_STD_VER >= 14
+
+  try { // Throw in vector(InputIterator, InputIterator) from input iterator
+    std::vector<int> vec((Iterator<std::input_iterator_tag>()), Iterator<std::input_iterator_tag>(2));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator) from forward iterator
+    std::vector<int> vec((Iterator<std::forward_iterator_tag>()), Iterator<std::forward_iterator_tag>(2));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator) from allocator
+    int a[] = {1, 2};
+    AllocVec vec(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + 2));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from input iterator
+    std::allocator<int> alloc;
+    std::vector<int> vec(Iterator<std::input_iterator_tag>(), Iterator<std::input_iterator_tag>(2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from forward iterator
+    std::allocator<int> alloc;
+    std::vector<int> vec(Iterator<std::forward_iterator_tag>(), Iterator<std::forward_iterator_tag>(2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from allocator
+    int a[] = {1, 2};
+    Allocator<int> alloc(false);
+    AllocVec vec(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + 2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(InputIterator, InputIterator, const allocator_type&) from allocator
+    int a[] = {1, 2};
+    Allocator<int> alloc(false);
+    AllocVec vec(forward_iterator<int*>(a), forward_iterator<int*>(a + 2), alloc);
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(const vector&) from type
+    std::vector<ThrowingT> vec;
+    int throw_after = 0;
+    vec.emplace_back(throw_after);
+    auto vec2 = vec;
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(const vector&, const allocator_type&) from type
+    std::vector<ThrowingT> vec;
+    int throw_after = 1;
+    vec.emplace_back(throw_after);
+    std::vector<ThrowingT> vec2(vec, std::allocator<int>());
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(vector&&, const allocator_type&) from type
+    std::vector<ThrowingT, Allocator<ThrowingT> > vec(Allocator<ThrowingT>(false));
+    int throw_after = 1;
+    vec.emplace_back(throw_after);
+    std::vector<ThrowingT, Allocator<ThrowingT> > vec2(std::move(vec), Allocator<ThrowingT>(false));
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+#if TEST_STD_VER >= 11
+  try { // Throw in vector(initializer_list<value_type>) from type
+    int throw_after = 1;
+    std::vector<ThrowingT> vec({ThrowingT(throw_after)});
+  } catch (int) {
+  }
+  check_new_delete_called();
+
+  try { // Throw in vector(initializer_list<value_type>, const allocator_type&) constructor from type
+    int throw_after = 1;
+    std::vector<ThrowingT> vec({ThrowingT(throw_after)}, std::allocator<ThrowingT>());
+  } catch (int) {
+  }
+  check_new_delete_called();
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..6454f87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/initializer_list.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector(initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<int> d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::vector<int, min_allocator<int>> d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/initializer_list_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/initializer_list_alloc.pass.cpp
new file mode 100644
index 0000000..157aefc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/initializer_list_alloc.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector(initializer_list<value_type> il, const Allocator& a = allocator_type());
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<int, test_allocator<int>> d({3, 4, 5, 6}, test_allocator<int>(3));
+    assert(d.get_allocator() == test_allocator<int>(3));
+    assert(d.size() == 4);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::vector<int, min_allocator<int>> d({3, 4, 5, 6}, min_allocator<int>());
+    assert(d.get_allocator() == min_allocator<int>());
+    assert(d.size() == 4);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::vector<int, min_allocator<int>> d({}, min_allocator<int>());
+    assert(d.size() == 0);
+    assert(d.empty());
+    assert(is_contiguous_container_asan_correct(d));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..05b29c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move.addressof.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// vector(vector&& c);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  {
+    std::vector<operator_hijacker> vo;
+    std::vector<operator_hijacker> v(std::move(vo));
+  }
+  {
+    std::vector<operator_hijacker> vo;
+    std::vector<operator_hijacker> v(std::move(vo), std::allocator<operator_hijacker>());
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move.pass.cpp
new file mode 100644
index 0000000..0f3e737
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// vector(vector&& c);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test_allocator_statistics alloc_stats;
+    {
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5, &alloc_stats));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5, &alloc_stats));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, other_allocator<MoveOnly> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        std::vector<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+        assert(is_contiguous_container_asan_correct(c1));
+        std::vector<int>::const_iterator i = c1.begin();
+        std::vector<int> c2 = std::move(c1);
+        assert(is_contiguous_container_asan_correct(c2));
+        std::vector<int>::iterator j = c2.erase(i);
+        assert(*j == 3);
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        std::vector<MoveOnly, min_allocator<MoveOnly> > l((min_allocator<MoveOnly>()));
+        std::vector<MoveOnly, min_allocator<MoveOnly> > lo((min_allocator<MoveOnly>()));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, min_allocator<MoveOnly> > l2 = std::move(l);
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == lo.get_allocator());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        std::vector<int, min_allocator<int> > c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+        assert(is_contiguous_container_asan_correct(c1));
+        std::vector<int, min_allocator<int> >::const_iterator i = c1.begin();
+        std::vector<int, min_allocator<int> > c2 = std::move(c1);
+        assert(is_contiguous_container_asan_correct(c2));
+        std::vector<int, min_allocator<int> >::iterator j = c2.erase(i);
+        assert(*j == 3);
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+      alloc_stats.clear();
+      using Vect = std::vector<int, test_allocator<int> >;
+      Vect v(test_allocator<int>(42, 101, &alloc_stats));
+      assert(alloc_stats.count == 1);
+      assert(alloc_stats.copied == 1);
+      assert(alloc_stats.moved == 0);
+      {
+        const test_allocator<int>& a = v.get_allocator();
+        assert(a.get_data() == 42);
+        assert(a.get_id() == 101);
+      }
+      assert(alloc_stats.count == 1);
+      alloc_stats.clear_ctor_counters();
+
+      Vect v2 = std::move(v);
+      assert(alloc_stats.count == 2);
+      assert(alloc_stats.copied == 0);
+      assert(alloc_stats.moved == 1);
+      {
+        const test_allocator<int>& a = v.get_allocator();
+        assert(a.get_id() == test_alloc_base::moved_value);
+        assert(a.get_data() == test_alloc_base::moved_value);
+      }
+      {
+        const test_allocator<int>& a = v2.get_allocator();
+        assert(a.get_id() == 101);
+        assert(a.get_data() == 42);
+      }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..2b6705a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_alloc.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// vector(vector&& c, const allocator_type& a);
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l2(std::move(l), test_allocator<MoveOnly>(6));
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == test_allocator<MoveOnly>(6));
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l(test_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > lo(test_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, test_allocator<MoveOnly> > l2(std::move(l), test_allocator<MoveOnly>(5));
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == test_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, other_allocator<MoveOnly> > l(other_allocator<MoveOnly>(5));
+        std::vector<MoveOnly, other_allocator<MoveOnly> > lo(other_allocator<MoveOnly>(5));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, other_allocator<MoveOnly> > l2(std::move(l), other_allocator<MoveOnly>(4));
+        assert(l2 == lo);
+        assert(!l.empty());
+        assert(l2.get_allocator() == other_allocator<MoveOnly>(4));
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+    {
+        std::vector<MoveOnly, min_allocator<MoveOnly> > l((min_allocator<MoveOnly>()));
+        std::vector<MoveOnly, min_allocator<MoveOnly> > lo((min_allocator<MoveOnly>()));
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        for (int i = 1; i <= 3; ++i)
+        {
+            l.push_back(i);
+            lo.push_back(i);
+        }
+        assert(is_contiguous_container_asan_correct(l));
+        assert(is_contiguous_container_asan_correct(lo));
+        std::vector<MoveOnly, min_allocator<MoveOnly> > l2(std::move(l), min_allocator<MoveOnly>());
+        assert(l2 == lo);
+        assert(l.empty());
+        assert(l2.get_allocator() == min_allocator<MoveOnly>());
+        assert(is_contiguous_container_asan_correct(l2));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..fdd74a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector& operator=(vector&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_move_assignment;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_move_assignment;
+    typedef std::false_type is_always_equal;
+};
+
+
+int main(int, char**)
+{
+    {
+        typedef std::vector<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, some_alloc<MoveOnly>> C;
+    //  In C++17, move assignment for allocators are not allowed to throw
+#if TEST_STD_VER > 14
+        static_assert( std::is_nothrow_move_assignable<C>::value, "");
+#else
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+#endif
+    }
+
+#if TEST_STD_VER > 14
+    {  // POCMA false, is_always_equal true
+        typedef std::vector<MoveOnly, some_alloc2<MoveOnly>> C;
+        static_assert( std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {  // POCMA false, is_always_equal false
+        typedef std::vector<MoveOnly, some_alloc3<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..30e9f46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/move_noexcept.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// vector(vector&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::vector<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::vector<MoveOnly, some_alloc<MoveOnly>> C;
+    //  In C++17, move constructors for allocators are not allowed to throw
+#if TEST_STD_VER > 14
+        static_assert( std::is_nothrow_move_constructible<C>::value, "");
+#else
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/op_equal_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/op_equal_initializer_list.pass.cpp
new file mode 100644
index 0000000..f3d7b6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.cons/op_equal_initializer_list.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// vector& operator=(initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    std::vector<int> d;
+    d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+    {
+    std::vector<int, min_allocator<int>> d;
+    d = {3, 4, 5, 6};
+    assert(d.size() == 4);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(d[0] == 3);
+    assert(d[1] == 4);
+    assert(d[2] == 5);
+    assert(d[3] == 6);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.data/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.data/data.pass.cpp
new file mode 100644
index 0000000..4d2cadc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.data/data.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// pointer data();
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+struct Nasty {
+    TEST_CONSTEXPR Nasty() : i_(0) {}
+    TEST_CONSTEXPR Nasty(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 ~Nasty() {}
+
+    Nasty * operator&() const { assert(false); return nullptr; }
+    int i_;
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<int> v;
+        assert(v.data() == 0);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<Nasty> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v;
+        assert(v.data() == 0);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<Nasty, min_allocator<Nasty>> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.data/data_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.data/data_const.pass.cpp
new file mode 100644
index 0000000..d314f90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.data/data_const.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// const_pointer data() const;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+struct Nasty {
+    TEST_CONSTEXPR Nasty() : i_(0) {}
+    TEST_CONSTEXPR Nasty(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 ~Nasty() {}
+
+    Nasty * operator&() const { assert(false); return nullptr; }
+    int i_;
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        const std::vector<int> v;
+        assert(v.data() == 0);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        const std::vector<int> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<Nasty> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#if TEST_STD_VER >= 11
+    {
+        const std::vector<int, min_allocator<int>> v;
+        assert(v.data() == 0);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        const std::vector<int, min_allocator<int>> v(100);
+        assert(v.data() == &v.front());
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<Nasty, min_allocator<Nasty>> v(100);
+        assert(v.data() == std::addressof(v.front()));
+        assert(is_contiguous_container_asan_correct(v));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.erasure/erase.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.erasure/erase.pass.cpp
new file mode 100644
index 0000000..72441c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.erasure/erase.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <vector>
+
+// template <class T, class Allocator, class U>
+//   typename vector<T, Allocator>::size_type
+//   erase(vector<T, Allocator>& c, const U& value);
+
+#include <vector>
+#include <optional>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class U>
+TEST_CONSTEXPR_CXX20 void test0(S s, U val, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase(s, val)));
+  assert(expected_erased_count == std::erase(s, val));
+  assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test()
+{
+  test0(S(), 1, S(), 0);
+
+  test0(S({1}), 1, S(), 1);
+  test0(S({1}), 2, S({1}), 0);
+
+  test0(S({1, 2}), 1, S({2}), 1);
+  test0(S({1, 2}), 2, S({1}), 1);
+  test0(S({1, 2}), 3, S({1, 2}), 0);
+  test0(S({1, 1}), 1, S(), 2);
+  test0(S({1, 1}), 3, S({1, 1}), 0);
+
+  test0(S({1, 2, 3}), 1, S({2, 3}), 1);
+  test0(S({1, 2, 3}), 2, S({1, 3}), 1);
+  test0(S({1, 2, 3}), 3, S({1, 2}), 1);
+  test0(S({1, 2, 3}), 4, S({1, 2, 3}), 0);
+
+  test0(S({1, 1, 1}), 1, S(), 3);
+  test0(S({1, 1, 1}), 2, S({1, 1, 1}), 0);
+  test0(S({1, 1, 2}), 1, S({2}), 2);
+  test0(S({1, 1, 2}), 2, S({1, 1}), 1);
+  test0(S({1, 1, 2}), 3, S({1, 1, 2}), 0);
+  test0(S({1, 2, 2}), 1, S({2, 2}), 1);
+  test0(S({1, 2, 2}), 2, S({1}), 2);
+  test0(S({1, 2, 2}), 3, S({1, 2, 2}), 0);
+
+  //  Test cross-type erasure
+  using opt = std::optional<typename S::value_type>;
+  test0(S({1, 2, 1}), opt(), S({1, 2, 1}), 0);
+  test0(S({1, 2, 1}), opt(1), S({2}), 2);
+  test0(S({1, 2, 1}), opt(2), S({1, 1}), 1);
+  test0(S({1, 2, 1}), opt(3), S({1, 2, 1}), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test<std::vector<int>>();
+    test<std::vector<int, min_allocator<int>>> ();
+    test<std::vector<int, test_allocator<int>>> ();
+
+    test<std::vector<long>>();
+    test<std::vector<double>>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+  tests();
+#if TEST_STD_VER > 17
+  static_assert(tests());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..1fcc1c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.erasure/erase_if.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <vector>
+
+// template <class T, class Allocator, class Predicate>
+//   typename vector<T, Allocator>::size_type
+//   erase_if(vector<T, Allocator>& c, Predicate pred);
+
+#include <vector>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+TEST_CONSTEXPR_CXX20 void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  assert(s == expected);
+}
+
+template <typename S>
+TEST_CONSTEXPR_CXX20 void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(), is1, S(), 0);
+
+    test0(S({1}), is1, S(), 1);
+    test0(S({1}), is2, S({1}), 0);
+
+    test0(S({1, 2}), is1, S({2}), 1);
+    test0(S({1, 2}), is2, S({1}), 1);
+    test0(S({1, 2}), is3, S({1, 2}), 0);
+    test0(S({1, 1}), is1, S(), 2);
+    test0(S({1, 1}), is3, S({1, 1}), 0);
+
+    test0(S({1, 2, 3}), is1, S({2, 3}), 1);
+    test0(S({1, 2, 3}), is2, S({1, 3}), 1);
+    test0(S({1, 2, 3}), is3, S({1, 2}), 1);
+    test0(S({1, 2, 3}), is4, S({1, 2, 3}), 0);
+
+    test0(S({1, 1, 1}), is1, S(), 3);
+    test0(S({1, 1, 1}), is2, S({1, 1, 1}), 0);
+    test0(S({1, 1, 2}), is1, S({2}), 2);
+    test0(S({1, 1, 2}), is2, S({1, 1}), 1);
+    test0(S({1, 1, 2}), is3, S({1, 1, 2}), 0);
+    test0(S({1, 2, 2}), is1, S({2, 2}), 1);
+    test0(S({1, 2, 2}), is2, S({1}), 2);
+    test0(S({1, 2, 2}), is3, S({1, 2, 2}), 0);
+
+    test0(S({1, 2, 3}), True, S(), 3);
+    test0(S({1, 2, 3}), False, S({1, 2, 3}), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    test<std::vector<int>>();
+    test<std::vector<int, min_allocator<int>>> ();
+    test<std::vector<int, test_allocator<int>>> ();
+
+    test<std::vector<long>>();
+    test<std::vector<double>>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..5a1e134
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/clear.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void clear() noexcept;
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    int a[] = {1, 2, 3};
+    std::vector<int> c(a, a+3);
+    ASSERT_NOEXCEPT(c.clear());
+    c.clear();
+    assert(c.empty());
+    LIBCPP_ASSERT(c.__invariants());
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a[] = {1, 2, 3};
+    std::vector<int, min_allocator<int>> c(a, a+3);
+    ASSERT_NOEXCEPT(c.clear());
+    c.clear();
+    assert(c.empty());
+    LIBCPP_ASSERT(c.__invariants());
+    LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace.addressof.compile.pass.cpp
new file mode 100644
index 0000000..43e553e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace.addressof.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// template <class... Args> iterator emplace(const_iterator pos, Args&&... args);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> v;
+  v.emplace(v.end());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..f2c656c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace.pass.cpp
@@ -0,0 +1,146 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// template <class... Args> iterator emplace(const_iterator pos, Args&&... args);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+class A
+{
+    int i_;
+    double d_;
+
+    A(const A&);
+    A& operator=(const A&);
+public:
+    TEST_CONSTEXPR_CXX14 A(int i, double d)
+        : i_(i), d_(d) {}
+
+    TEST_CONSTEXPR_CXX14 A(A&& a)
+        : i_(a.i_),
+          d_(a.d_)
+    {
+        a.i_ = 0;
+        a.d_ = 0;
+    }
+
+    TEST_CONSTEXPR_CXX14 A& operator=(A&& a)
+    {
+        i_ = a.i_;
+        d_ = a.d_;
+        a.i_ = 0;
+        a.d_ = 0;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX14 int geti() const {return i_;}
+    TEST_CONSTEXPR_CXX14 double getd() const {return d_;}
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<A> c;
+        std::vector<A>::iterator i = c.emplace(c.cbegin(), 2, 3.5);
+        assert(i == c.begin());
+        assert(c.size() == 1);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        i = c.emplace(c.cend(), 3, 4.5);
+        assert(i == c.end()-1);
+        assert(c.size() == 2);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+        i = c.emplace(c.cbegin()+1, 4, 6.5);
+        assert(i == c.begin()+1);
+        assert(c.size() == 3);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c[1].geti() == 4);
+        assert(c[1].getd() == 6.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+    }
+    {
+        std::vector<A, limited_allocator<A, 7> > c;
+        std::vector<A, limited_allocator<A, 7> >::iterator i = c.emplace(c.cbegin(), 2, 3.5);
+        assert(i == c.begin());
+        assert(c.size() == 1);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        i = c.emplace(c.cend(), 3, 4.5);
+        assert(i == c.end()-1);
+        assert(c.size() == 2);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+        i = c.emplace(c.cbegin()+1, 4, 6.5);
+        assert(i == c.begin()+1);
+        assert(c.size() == 3);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c[1].geti() == 4);
+        assert(c[1].getd() == 6.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+    }
+    {
+        std::vector<A, min_allocator<A> > c;
+        std::vector<A, min_allocator<A> >::iterator i = c.emplace(c.cbegin(), 2, 3.5);
+        assert(i == c.begin());
+        assert(c.size() == 1);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        i = c.emplace(c.cend(), 3, 4.5);
+        assert(i == c.end()-1);
+        assert(c.size() == 2);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        i = c.emplace(c.cbegin()+1, 4, 6.5);
+        assert(i == c.begin()+1);
+        assert(c.size() == 3);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c[1].geti() == 4);
+        assert(c[1].getd() == 6.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_back.pass.cpp
new file mode 100644
index 0000000..bb7fa74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_back.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// template <class... Args> reference emplace_back(Args&&... args);
+// return type is 'reference' in C++17; 'void' before
+
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "asan_testing.h"
+
+class A
+{
+    int i_;
+    double d_;
+
+public:
+    A(const A&) = delete;
+    A& operator=(const A&) = delete;
+
+    TEST_CONSTEXPR_CXX14 A(int i, double d)
+        : i_(i), d_(d) {}
+
+    TEST_CONSTEXPR_CXX14 A(A&& a)
+        : i_(a.i_),
+          d_(a.d_)
+    {
+        a.i_ = 0;
+        a.d_ = 0;
+    }
+
+    TEST_CONSTEXPR_CXX14 A& operator=(A&& a)
+    {
+        i_ = a.i_;
+        d_ = a.d_;
+        a.i_ = 0;
+        a.d_ = 0;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX14 int geti() const {return i_;}
+    TEST_CONSTEXPR_CXX14 double getd() const {return d_;}
+};
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<A> c;
+#if TEST_STD_VER > 14
+        A& r1 = c.emplace_back(2, 3.5);
+        assert(c.size() == 1);
+        assert(&r1 == &c.back());
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        A& r2 = c.emplace_back(3, 4.5);
+        assert(c.size() == 2);
+        assert(&r2 == &c.back());
+#else
+        c.emplace_back(2, 3.5);
+        assert(c.size() == 1);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        c.emplace_back(3, 4.5);
+        assert(c.size() == 2);
+#endif
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+    }
+    {
+        std::vector<A, limited_allocator<A, 4> > c;
+#if TEST_STD_VER > 14
+        A& r1 = c.emplace_back(2, 3.5);
+        assert(c.size() == 1);
+        assert(&r1 == &c.back());
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        A& r2 = c.emplace_back(3, 4.5);
+        assert(c.size() == 2);
+        assert(&r2 == &c.back());
+#else
+        c.emplace_back(2, 3.5);
+        assert(c.size() == 1);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        c.emplace_back(3, 4.5);
+        assert(c.size() == 2);
+#endif
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+    }
+    {
+        std::vector<A, min_allocator<A> > c;
+#if TEST_STD_VER > 14
+        A& r1 = c.emplace_back(2, 3.5);
+        assert(c.size() == 1);
+        assert(&r1 == &c.back());
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        A& r2 = c.emplace_back(3, 4.5);
+        assert(c.size() == 2);
+        assert(&r2 == &c.back());
+#else
+        c.emplace_back(2, 3.5);
+        assert(c.size() == 1);
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(is_contiguous_container_asan_correct(c));
+        c.emplace_back(3, 4.5);
+        assert(c.size() == 2);
+#endif
+        assert(c.front().geti() == 2);
+        assert(c.front().getd() == 3.5);
+        assert(c.back().geti() == 3);
+        assert(c.back().getd() == 4.5);
+        assert(is_contiguous_container_asan_correct(c));
+    }
+    {
+        std::vector<Tag_X, TaggingAllocator<Tag_X> > c;
+        c.emplace_back();
+        assert(c.size() == 1);
+        c.emplace_back(1, 2, 3);
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+    }
+
+    { // LWG 2164
+        int arr[] = {0, 1, 2, 3, 4};
+        int sz = 5;
+        std::vector<int> c(arr, arr+sz);
+        while (c.size() < c.capacity())
+            c.push_back(sz++);
+        c.emplace_back(c.front());
+        assert(c.back() == 0);
+        for (int i = 0; i < sz; ++i)
+            assert(c[i] == i);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_extra.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_extra.pass.cpp
new file mode 100644
index 0000000..3e1a1d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_extra.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// template <class... Args> iterator emplace(const_iterator pos, Args&&... args);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    {
+        std::vector<int> v;
+        v.reserve(3);
+        assert(is_contiguous_container_asan_correct(v));
+        v = { 1, 2, 3 };
+        v.emplace(v.begin(), v.back());
+        assert(v[0] == 3);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int> v;
+        v.reserve(4);
+        assert(is_contiguous_container_asan_correct(v));
+        v = { 1, 2, 3 };
+        v.emplace(v.begin(), v.back());
+        assert(v[0] == 3);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int, min_allocator<int>> v;
+        v.reserve(3);
+        assert(is_contiguous_container_asan_correct(v));
+        v = { 1, 2, 3 };
+        v.emplace(v.begin(), v.back());
+        assert(v[0] == 3);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int, min_allocator<int>> v;
+        v.reserve(4);
+        assert(is_contiguous_container_asan_correct(v));
+        v = { 1, 2, 3 };
+        v.emplace(v.begin(), v.back());
+        assert(v[0] == 3);
+        assert(is_contiguous_container_asan_correct(v));
+    }
+    {
+        std::vector<int> v;
+        v.reserve(8);
+        size_t old_capacity = v.capacity();
+        assert(old_capacity >= 8);
+
+        v.resize(4); // keep the existing capacity
+        assert(v.capacity() == old_capacity);
+
+        v.emplace(v.cend(), 42);
+        assert(v.size() == 5);
+        assert(v.capacity() == old_capacity);
+        assert(v[4] == 42);
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..0fce349
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter.addressof.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator erase(const_iterator position);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> v;
+  v.erase(v.end());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter.pass.cpp
new file mode 100644
index 0000000..43d843e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator erase(const_iterator position);
+
+#include <vector>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Throws {
+    Throws() : v_(0) {}
+    Throws(int v) : v_(v) {}
+    Throws(const Throws  &rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws(      Throws &&rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws& operator=(const Throws  &rhs) { v_ = rhs.v_; return *this; }
+    Throws& operator=(      Throws &&rhs) { v_ = rhs.v_; return *this; }
+    int v_;
+    static bool sThrows;
+    };
+
+bool Throws::sThrows = false;
+#endif
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+    int a1[] = {1, 2, 3, 4, 5};
+    std::vector<int> l1(a1, a1+5);
+    l1.erase(l1.begin());
+    assert(is_contiguous_container_asan_correct(l1));
+    assert(l1 == std::vector<int>(a1+1, a1+5));
+    }
+    {
+    int a1[] = {1, 2, 3, 4, 5};
+    int e1[] = {1, 3, 4, 5};
+    std::vector<int> l1(a1, a1+5);
+    l1.erase(l1.begin() + 1);
+    assert(is_contiguous_container_asan_correct(l1));
+    assert(l1 == std::vector<int>(e1, e1+4));
+    }
+    {
+    int a1[] = {1, 2, 3};
+    std::vector<int> l1(a1, a1+3);
+    std::vector<int>::const_iterator i = l1.begin();
+    assert(is_contiguous_container_asan_correct(l1));
+    ++i;
+    std::vector<int>::iterator j = l1.erase(i);
+    assert(l1.size() == 2);
+    assert(std::distance(l1.begin(), l1.end()) == 2);
+    assert(*j == 3);
+    assert(*l1.begin() == 1);
+    assert(*std::next(l1.begin()) == 3);
+    assert(is_contiguous_container_asan_correct(l1));
+    j = l1.erase(j);
+    assert(j == l1.end());
+    assert(l1.size() == 1);
+    assert(std::distance(l1.begin(), l1.end()) == 1);
+    assert(*l1.begin() == 1);
+    assert(is_contiguous_container_asan_correct(l1));
+    j = l1.erase(l1.begin());
+    assert(j == l1.end());
+    assert(l1.size() == 0);
+    assert(std::distance(l1.begin(), l1.end()) == 0);
+    assert(is_contiguous_container_asan_correct(l1));
+    }
+#if TEST_STD_VER >= 11
+    {
+    int a1[] = {1, 2, 3};
+    std::vector<int, min_allocator<int>> l1(a1, a1+3);
+    std::vector<int, min_allocator<int>>::const_iterator i = l1.begin();
+    assert(is_contiguous_container_asan_correct(l1));
+    ++i;
+    std::vector<int, min_allocator<int>>::iterator j = l1.erase(i);
+    assert(l1.size() == 2);
+    assert(std::distance(l1.begin(), l1.end()) == 2);
+    assert(*j == 3);
+    assert(*l1.begin() == 1);
+    assert(*std::next(l1.begin()) == 3);
+    assert(is_contiguous_container_asan_correct(l1));
+    j = l1.erase(j);
+    assert(j == l1.end());
+    assert(l1.size() == 1);
+    assert(std::distance(l1.begin(), l1.end()) == 1);
+    assert(*l1.begin() == 1);
+    assert(is_contiguous_container_asan_correct(l1));
+    j = l1.erase(l1.begin());
+    assert(j == l1.end());
+    assert(l1.size() == 0);
+    assert(std::distance(l1.begin(), l1.end()) == 0);
+    assert(is_contiguous_container_asan_correct(l1));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+// Test for LWG2853:
+// Throws: Nothing unless an exception is thrown by the assignment operator or move assignment operator of T.
+    {
+        Throws arr[] = {1, 2, 3};
+        std::vector<Throws> v(arr, arr+3);
+        Throws::sThrows = true;
+        v.erase(v.begin());
+        v.erase(--v.end());
+        v.erase(v.begin());
+        assert(v.size() == 0);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..bc90fa7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter_iter.addressof.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator erase(const_iterator position);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> v;
+  v.erase(v.begin(), v.end());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter_iter.pass.cpp
new file mode 100644
index 0000000..7857b88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/erase_iter_iter.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator erase(const_iterator first, const_iterator last);
+
+#include <vector>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Throws {
+    Throws() : v_(0) {}
+    Throws(int v) : v_(v) {}
+    Throws(const Throws  &rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws(      Throws &&rhs) : v_(rhs.v_) { if (sThrows) throw 1; }
+    Throws& operator=(const Throws  &rhs) { v_ = rhs.v_; return *this; }
+    Throws& operator=(      Throws &&rhs) { v_ = rhs.v_; return *this; }
+    int v_;
+    static bool sThrows;
+    };
+
+bool Throws::sThrows = false;
+#endif
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    int a1[] = {1, 2, 3};
+    {
+        std::vector<int> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int>::iterator i = l1.erase(l1.cbegin(), l1.cbegin());
+        assert(l1.size() == 3);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 3);
+        assert(i == l1.begin());
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<int> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 2);
+        assert(i == l1.begin());
+        assert(l1 == std::vector<int>(a1+1, a1+3));
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<int> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 1);
+        assert(i == l1.begin());
+        assert(l1 == std::vector<int>(a1+2, a1+3));
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<int> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 3));
+        assert(l1.size() == 0);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 0);
+        assert(i == l1.begin());
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<std::vector<int> > outer(2, std::vector<int>(1));
+        assert(is_contiguous_container_asan_correct(outer));
+        assert(is_contiguous_container_asan_correct(outer[0]));
+        assert(is_contiguous_container_asan_correct(outer[1]));
+        outer.erase(outer.begin(), outer.begin());
+        assert(outer.size() == 2);
+        assert(outer[0].size() == 1);
+        assert(outer[1].size() == 1);
+        assert(is_contiguous_container_asan_correct(outer));
+        assert(is_contiguous_container_asan_correct(outer[0]));
+        assert(is_contiguous_container_asan_correct(outer[1]));
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), l1.cbegin());
+        assert(l1.size() == 3);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 3);
+        assert(i == l1.begin());
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<int, min_allocator<int>> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin()));
+        assert(l1.size() == 2);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 2);
+        assert(i == l1.begin());
+        assert((l1 == std::vector<int, min_allocator<int>>(a1+1, a1+3)));
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<int, min_allocator<int>> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 2));
+        assert(l1.size() == 1);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 1);
+        assert(i == l1.begin());
+        assert((l1 == std::vector<int, min_allocator<int>>(a1+2, a1+3)));
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<int, min_allocator<int>> l1(a1, a1+3);
+        assert(is_contiguous_container_asan_correct(l1));
+        std::vector<int, min_allocator<int>>::iterator i = l1.erase(l1.cbegin(), std::next(l1.cbegin(), 3));
+        assert(l1.size() == 0);
+        assert(std::distance(l1.cbegin(), l1.cend()) == 0);
+        assert(i == l1.begin());
+        assert(is_contiguous_container_asan_correct(l1));
+    }
+    {
+        std::vector<std::vector<int, min_allocator<int>>, min_allocator<std::vector<int, min_allocator<int>>>> outer(2, std::vector<int, min_allocator<int>>(1));
+        assert(is_contiguous_container_asan_correct(outer));
+        assert(is_contiguous_container_asan_correct(outer[0]));
+        assert(is_contiguous_container_asan_correct(outer[1]));
+        outer.erase(outer.begin(), outer.begin());
+        assert(outer.size() == 2);
+        assert(outer[0].size() == 1);
+        assert(outer[1].size() == 1);
+        assert(is_contiguous_container_asan_correct(outer));
+        assert(is_contiguous_container_asan_correct(outer[0]));
+        assert(is_contiguous_container_asan_correct(outer[1]));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+// Test for LWG2853:
+// Throws: Nothing unless an exception is thrown by the assignment operator or move assignment operator of T.
+    {
+        Throws arr[] = {1, 2, 3};
+        std::vector<Throws> v(arr, arr+3);
+        Throws::sThrows = true;
+        v.erase(v.begin(), --v.end());
+        assert(v.size() == 1);
+        v.erase(v.begin(), v.end());
+        assert(v.size() == 0);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_initializer_list.pass.cpp
new file mode 100644
index 0000000..9258489
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_initializer_list.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// iterator insert(const_iterator p, initializer_list<value_type> il);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+int throw_if_zero     = 2;
+int constructed_count = 0;
+
+struct ThrowSometimes {
+  ThrowSometimes() { ++constructed_count; }
+  ThrowSometimes(const ThrowSometimes&) {
+    if (--throw_if_zero == 0)
+      throw 1;
+    ++constructed_count;
+  }
+  ThrowSometimes& operator=(const ThrowSometimes&) {
+    if (--throw_if_zero == 0)
+      throw 1;
+    ++constructed_count;
+    return *this;
+  }
+  ~ThrowSometimes() { --constructed_count; }
+};
+
+void test_throwing() {
+  std::vector<ThrowSometimes> v;
+  v.reserve(4);
+  v.emplace_back();
+  v.emplace_back();
+  try {
+    v.insert(v.end(), {ThrowSometimes{}, ThrowSometimes{}});
+    assert(false);
+  } catch (int) {
+    assert(v.size() == 2);
+    assert(constructed_count == 2);
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+  {
+    std::vector<int> d(10, 1);
+    std::vector<int>::iterator i = d.insert(d.cbegin() + 2, {3, 4, 5, 6});
+    assert(d.size() == 14);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(i == d.begin() + 2);
+    assert(d[0] == 1);
+    assert(d[1] == 1);
+    assert(d[2] == 3);
+    assert(d[3] == 4);
+    assert(d[4] == 5);
+    assert(d[5] == 6);
+    assert(d[6] == 1);
+    assert(d[7] == 1);
+    assert(d[8] == 1);
+    assert(d[9] == 1);
+    assert(d[10] == 1);
+    assert(d[11] == 1);
+    assert(d[12] == 1);
+    assert(d[13] == 1);
+  }
+  {
+    std::vector<int, min_allocator<int>> d(10, 1);
+    std::vector<int, min_allocator<int>>::iterator i = d.insert(d.cbegin() + 2, {3, 4, 5, 6});
+    assert(d.size() == 14);
+    assert(is_contiguous_container_asan_correct(d));
+    assert(i == d.begin() + 2);
+    assert(d[0] == 1);
+    assert(d[1] == 1);
+    assert(d[2] == 3);
+    assert(d[3] == 4);
+    assert(d[4] == 5);
+    assert(d[5] == 6);
+    assert(d[6] == 1);
+    assert(d[7] == 1);
+    assert(d[8] == 1);
+    assert(d[9] == 1);
+    assert(d[10] == 1);
+    assert(d[11] == 1);
+    assert(d[12] == 1);
+    assert(d[13] == 1);
+  }
+
+    return true;
+}
+
+int main(int, char**) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  test_throwing();
+#endif
+  tests();
+#if TEST_STD_VER > 17
+  static_assert(tests());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_iter_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_iter_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..f831109
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_iter_iter.addressof.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class Iter>
+//   iterator insert(const_iterator position, Iter first, Iter last);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+#include "test_iterators.h"
+
+void test(cpp17_input_iterator<operator_hijacker*> i) {
+  {
+    std::vector<operator_hijacker> v;
+    v.insert(v.end(), i, i);
+  }
+  {
+    std::vector<operator_hijacker> v;
+    v.insert(v.end(), v.begin(), v.end());
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..fe18d2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_iter_iter.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class Iter>
+//   iterator insert(const_iterator position, Iter first, Iter last);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+namespace adl {
+struct S {};
+void make_move_iterator(S*) {}
+}
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        typedef std::vector<int> V;
+        V v(100);
+        int a[] = {1, 2, 3, 4, 5};
+        const int N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, cpp17_input_iterator<const int*>(a),
+                                 cpp17_input_iterator<const int*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        typedef std::vector<int> V;
+        V v(100);
+        int a[] = {1, 2, 3, 4, 5};
+        const int N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const int*>(a),
+                                 forward_iterator<const int*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        typedef std::vector<int> V;
+        V v(100);
+        while(v.size() < v.capacity()) v.push_back(0); // force reallocation
+        size_t sz = v.size();
+        int a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const int*>(a),
+                                 forward_iterator<const int*>(a+N));
+        assert(v.size() == sz + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        typedef std::vector<int> V;
+        V v(100);
+        v.reserve(128); // force no reallocation
+        size_t sz = v.size();
+        int a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const int*>(a),
+                                 forward_iterator<const int*>(a+N));
+        assert(v.size() == sz + N);
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        typedef std::vector<int, limited_allocator<int, 308> > V;
+        V v(100);
+        int a[] = {1, 2, 3, 4, 5};
+        const int N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, cpp17_input_iterator<const int*>(a),
+                                 cpp17_input_iterator<const int*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        typedef std::vector<int, limited_allocator<int, 300> > V;
+        V v(100);
+        int a[] = {1, 2, 3, 4, 5};
+        const int N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const int*>(a),
+                                 forward_iterator<const int*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::vector<int, min_allocator<int> > V;
+        V v(100);
+        int a[] = {1, 2, 3, 4, 5};
+        const int N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, cpp17_input_iterator<const int*>(a),
+                                 cpp17_input_iterator<const int*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        typedef std::vector<int, min_allocator<int> > V;
+        V v(100);
+        int a[] = {1, 2, 3, 4, 5};
+        const int N = sizeof(a)/sizeof(a[0]);
+        V::iterator i = v.insert(v.cbegin() + 10, forward_iterator<const int*>(a),
+                                 forward_iterator<const int*>(a+N));
+        assert(v.size() == 100 + N);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (std::size_t k = 0; k < N; ++j, ++k)
+            assert(v[j] == a[k]);
+        for (; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+#endif
+
+    {
+        std::vector<adl::S> s;
+        s.insert(s.end(), cpp17_input_iterator<adl::S*>(nullptr), cpp17_input_iterator<adl::S*>(nullptr));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_lvalue.pass.cpp
new file mode 100644
index 0000000..c8bb994
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_lvalue.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator insert(const_iterator position, const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+
+    {
+        std::vector<int> v(100);
+        const int lvalue = 1;
+        std::vector<int>::iterator i = v.insert(v.cbegin() + 10, lvalue);
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < 101; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        const size_t n = 100;
+        std::vector<int> v(n);
+        v.reserve(n + 1);
+        const int lvalue = 1;
+
+        // no reallocation expected
+        std::vector<int>::iterator it = v.insert(v.cbegin() + n, lvalue);
+
+        assert(v.size() == n + 1);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(it == v.begin() + n);
+        for (size_t i = 0; i < n; ++i) {
+            assert(v[i] == 0);
+        }
+        assert(v[n] == lvalue);
+    }
+    {
+        std::vector<int> v(100);
+        while(v.size() < v.capacity()) v.push_back(0); // force reallocation
+        size_t sz = v.size();
+        const int lvalue = 1;
+        std::vector<int>::iterator i = v.insert(v.cbegin() + 10, lvalue);
+        assert(v.size() == sz + 1);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<int> v(100);
+        while(v.size() < v.capacity()) v.push_back(0);
+        v.pop_back(); v.pop_back(); // force no reallocation
+        size_t sz = v.size();
+        const int lvalue = 1;
+        std::vector<int>::iterator i = v.insert(v.cbegin() + 10, lvalue);
+        assert(v.size() == sz + 1);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<int, limited_allocator<int, 300> > v(100);
+        const int lvalue = 1;
+        std::vector<int, limited_allocator<int, 300> >::iterator i = v.insert(v.cbegin() + 10, lvalue);
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < 101; ++j)
+            assert(v[j] == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        const int lvalue = 1;
+        std::vector<int, min_allocator<int>>::iterator i = v.insert(v.cbegin() + 10, lvalue);
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        assert(v[j] == 1);
+        for (++j; j < 101; ++j)
+            assert(v[j] == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_rvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_rvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..11f2460
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_rvalue.addressof.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// iterator insert(const_iterator position, value_type&& x);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> v;
+  v.insert(v.end(), operator_hijacker());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_rvalue.pass.cpp
new file mode 100644
index 0000000..11a7175
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_rvalue.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// iterator insert(const_iterator position, value_type&& x);
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<MoveOnly> v(100);
+        std::vector<MoveOnly>::iterator i = v.insert(v.cbegin() + 10, MoveOnly(3));
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == MoveOnly());
+        assert(v[j] == MoveOnly(3));
+        for (++j; j < 101; ++j)
+            assert(v[j] == MoveOnly());
+    }
+    {
+        std::vector<MoveOnly, limited_allocator<MoveOnly, 300> > v(100);
+        std::vector<MoveOnly, limited_allocator<MoveOnly, 300> >::iterator i = v.insert(v.cbegin() + 10, MoveOnly(3));
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == MoveOnly());
+        assert(v[j] == MoveOnly(3));
+        for (++j; j < 101; ++j)
+            assert(v[j] == MoveOnly());
+    }
+    {
+        std::vector<MoveOnly, min_allocator<MoveOnly> > v(100);
+        std::vector<MoveOnly, min_allocator<MoveOnly> >::iterator i = v.insert(v.cbegin() + 10, MoveOnly(3));
+        assert(v.size() == 101);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == MoveOnly());
+        assert(v[j] == MoveOnly(3));
+        for (++j; j < 101; ++j)
+            assert(v[j] == MoveOnly());
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_size_value.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_size_value.addressof.compile.pass.cpp
new file mode 100644
index 0000000..c02b92a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_size_value.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator insert(const_iterator position, size_type n, const value_type& x);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> v;
+  operator_hijacker val;
+  v.insert(v.end(), 1, val);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_size_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_size_value.pass.cpp
new file mode 100644
index 0000000..c629428
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_size_value.pass.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator insert(const_iterator position, size_type n, const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<int> v(100);
+        std::vector<int>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 105);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<int> v(100);
+        while(v.size() < v.capacity()) v.push_back(0); // force reallocation
+        size_t sz = v.size();
+        std::vector<int>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == sz + 5);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<int> v(100);
+        v.reserve(128); // force no reallocation
+        size_t sz = v.size();
+        std::vector<int>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == sz + 5);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        std::size_t j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < v.size(); ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<int, limited_allocator<int, 300> > v(100);
+        std::vector<int, limited_allocator<int, 300> >::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 105);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        std::vector<int, min_allocator<int>>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 105);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+    {
+        std::vector<int, min_allocator<int>> v(100);
+        std::vector<int, min_allocator<int>>::iterator i = v.insert(v.cbegin() + 10, 5, 1);
+        assert(v.size() == 105);
+        assert(is_contiguous_container_asan_correct(v));
+        assert(i == v.begin() + 10);
+        int j;
+        for (j = 0; j < 10; ++j)
+            assert(v[j] == 0);
+        for (; j < 15; ++j)
+            assert(v[j] == 1);
+        for (++j; j < 105; ++j)
+            assert(v[j] == 0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_value.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_value.addressof.compile.pass.cpp
new file mode 100644
index 0000000..fbf1a4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/insert_iter_value.addressof.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// iterator insert(const_iterator position, const value_type& x);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> v;
+  operator_hijacker val;
+  v.insert(v.end(), val);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/pop_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/pop_back.pass.cpp
new file mode 100644
index 0000000..9482920
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/pop_back.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void pop_back();
+
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<int> c;
+        c.push_back(1);
+        assert(c.size() == 1);
+        c.pop_back();
+        assert(c.size() == 0);
+
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> c;
+        c.push_back(1);
+        assert(c.size() == 1);
+        c.pop_back();
+        assert(c.size() == 0);
+    }
+#endif
+
+    { // LWG 526
+        int arr[] = {0, 1, 2, 3, 4};
+        int sz = 5;
+        std::vector<int> c(arr, arr+sz);
+        while (c.size() < c.capacity())
+            c.push_back(sz++);
+        c.push_back(c.front());
+        assert(c.back() == 0);
+        for (int i = 0; i < sz; ++i)
+            assert(c[i] == i);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back.pass.cpp
new file mode 100644
index 0000000..2490fde
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void push_back(const value_type& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<int> c;
+        c.push_back(0);
+        assert(c.size() == 1);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(1);
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(2);
+        assert(c.size() == 3);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(3);
+        assert(c.size() == 4);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(4);
+        assert(c.size() == 5);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+    }
+    {
+        // libc++ needs 15 because it grows by 2x (1 + 2 + 4 + 8).
+        // Use 17 for implementations that dynamically allocate a container proxy
+        // and grow by 1.5x (1 for proxy + 1 + 2 + 3 + 4 + 6).
+        std::vector<int, limited_allocator<int, 17> > c;
+        c.push_back(0);
+        assert(c.size() == 1);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(1);
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(2);
+        assert(c.size() == 3);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(3);
+        assert(c.size() == 4);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(4);
+        assert(c.size() == 5);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::vector<int, min_allocator<int>> c;
+        c.push_back(0);
+        assert(c.size() == 1);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(1);
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(2);
+        assert(c.size() == 3);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(3);
+        assert(c.size() == 4);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+        c.push_back(4);
+        assert(c.size() == 5);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == j);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back_exception_safety.pass.cpp
new file mode 100644
index 0000000..9e25611
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back_exception_safety.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// void push_back(const value_type& x);
+
+#include <vector>
+#include <cassert>
+
+#include "asan_testing.h"
+#include "test_macros.h"
+
+// Flag that makes the copy constructor for CMyClass throw an exception
+static bool gCopyConstructorShouldThrow = false;
+
+class CMyClass {
+    public: CMyClass(int tag);
+    public: CMyClass(const CMyClass& iOther);
+    public: ~CMyClass();
+
+    bool equal(const CMyClass &rhs) const
+        { return fTag == rhs.fTag && fMagicValue == rhs.fMagicValue; }
+    private:
+        int fMagicValue;
+        int fTag;
+
+    private: static int kStartedConstructionMagicValue;
+    private: static int kFinishedConstructionMagicValue;
+};
+
+// Value for fMagicValue when the constructor has started running, but not yet finished
+int CMyClass::kStartedConstructionMagicValue = 0;
+// Value for fMagicValue when the constructor has finished running
+int CMyClass::kFinishedConstructionMagicValue = 12345;
+
+CMyClass::CMyClass(int tag) :
+    fMagicValue(kStartedConstructionMagicValue), fTag(tag)
+{
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::CMyClass(const CMyClass& iOther) :
+    fMagicValue(kStartedConstructionMagicValue), fTag(iOther.fTag)
+{
+    // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
+    if (gCopyConstructorShouldThrow) {
+        TEST_THROW(std::exception());
+    }
+    // Signal that the constructor has finished running
+    fMagicValue = kFinishedConstructionMagicValue;
+}
+
+CMyClass::~CMyClass() {
+    // Only instances for which the constructor has finished running should be destructed
+    assert(fMagicValue == kFinishedConstructionMagicValue);
+}
+
+bool operator==(const CMyClass &lhs, const CMyClass &rhs) { return lhs.equal(rhs); }
+
+int main(int, char**)
+{
+    CMyClass instance(42);
+    std::vector<CMyClass> vec;
+
+    vec.push_back(instance);
+    std::vector<CMyClass> vec2(vec);
+    assert(is_contiguous_container_asan_correct(vec));
+    assert(is_contiguous_container_asan_correct(vec2));
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    gCopyConstructorShouldThrow = true;
+    try {
+        vec.push_back(instance);
+        assert(false);
+    }
+    catch (...) {
+        assert(vec==vec2);
+        assert(is_contiguous_container_asan_correct(vec));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back_rvalue.pass.cpp
new file mode 100644
index 0000000..92b629b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/push_back_rvalue.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// void push_back(value_type&& x);
+
+#include <vector>
+#include <cassert>
+#include <cstddef>
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        std::vector<MoveOnly> c;
+        c.push_back(MoveOnly(0));
+        assert(c.size() == 1);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(1));
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(2));
+        assert(c.size() == 3);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(3));
+        assert(c.size() == 4);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(4));
+        assert(c.size() == 5);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+    }
+    {
+        // libc++ needs 15 because it grows by 2x (1 + 2 + 4 + 8).
+        // Use 17 for implementations that dynamically allocate a container proxy
+        // and grow by 1.5x (1 for proxy + 1 + 2 + 3 + 4 + 6).
+        std::vector<MoveOnly, limited_allocator<MoveOnly, 17> > c;
+        c.push_back(MoveOnly(0));
+        assert(c.size() == 1);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(1));
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(2));
+        assert(c.size() == 3);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(3));
+        assert(c.size() == 4);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(4));
+        assert(c.size() == 5);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+    }
+    {
+        std::vector<MoveOnly, min_allocator<MoveOnly> > c;
+        c.push_back(MoveOnly(0));
+        assert(c.size() == 1);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(1));
+        assert(c.size() == 2);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(2));
+        assert(c.size() == 3);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(3));
+        assert(c.size() == 4);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+        c.push_back(MoveOnly(4));
+        assert(c.size() == 5);
+        assert(is_contiguous_container_asan_correct(c));
+        for (int j = 0; static_cast<std::size_t>(j) < c.size(); ++j)
+            assert(c[j] == MoveOnly(j));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/resize_not_move_insertable.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/resize_not_move_insertable.fail.cpp
new file mode 100644
index 0000000..99f28ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.modifiers/resize_not_move_insertable.fail.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <vector>
+
+// Test that vector produces a decent diagnostic for user types that explicitly
+// delete their move constructor. Such types don't meet the Cpp17CopyInsertable
+// requirements.
+
+#include <vector>
+
+template <int>
+class BadUserNoCookie {
+public:
+  BadUserNoCookie() { }
+
+  BadUserNoCookie(BadUserNoCookie&&) = delete;
+  BadUserNoCookie& operator=(BadUserNoCookie&&) = delete;
+
+  BadUserNoCookie(const BadUserNoCookie&) = default;
+  BadUserNoCookie& operator=(const BadUserNoCookie&) = default;
+};
+
+int main(int, char**) {
+  // expected-error@* 2 {{The specified type does not meet the requirements of Cpp17MoveInsertable}}
+
+  // Other diagnostics that might be seen as Clang tries to continue compiling:
+  // expected-error@* 0-2 {{call to deleted constructor}}
+  // expected-error@* 0-2 {{no matching function for call to 'construct_at'}}
+  {
+
+    std::vector<BadUserNoCookie<1> > x;
+    x.emplace_back();
+  }
+  {
+    std::vector<BadUserNoCookie<2> > x;
+    BadUserNoCookie<2> c;
+    x.push_back(c);
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap.addressof.compile.pass.cpp
new file mode 100644
index 0000000..4e908d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap.addressof.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class T, class Alloc>
+//   void swap(vector<T,Alloc>& x, vector<T,Alloc>& y);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <vector>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::vector<operator_hijacker> vo;
+  std::vector<operator_hijacker> v;
+  v.swap(vo);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap.pass.cpp
new file mode 100644
index 0000000..e1f4520
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <vector>
+
+// template <class T, class Alloc>
+//   void swap(vector<T,Alloc>& x, vector<T,Alloc>& y);
+
+#include <vector>
+#include <iterator>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+#include "asan_testing.h"
+
+TEST_CONSTEXPR_CXX20 bool tests()
+{
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+        std::vector<int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert(c1 == std::vector<int>(a2, a2+sizeof(a2)/sizeof(a2[0])));
+        assert(c2 == std::vector<int>(a1, a1+sizeof(a1)/sizeof(a1[0])));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int> c1(a1, a1);
+        std::vector<int> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert(c1 == std::vector<int>(a2, a2+sizeof(a2)/sizeof(a2[0])));
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+        std::vector<int> c2(a2, a2);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c2 == std::vector<int>(a1, a1+sizeof(a1)/sizeof(a1[0])));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int> c1(a1, a1);
+        std::vector<int> c2(a2, a2);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef test_allocator<int> A;
+        std::vector<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A(1, 1));
+        std::vector<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A(1, 2));
+        swap(c1, c2);
+        assert((c1 == std::vector<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c1.get_allocator().get_id() == 1);
+        assert((c2 == std::vector<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(c2.get_allocator().get_id() == 2);
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef other_allocator<int> A;
+        std::vector<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A(1));
+        std::vector<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A(2));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert((c1 == std::vector<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c1.get_allocator() == A(2));
+        assert((c2 == std::vector<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(c2.get_allocator() == A(1));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+#if TEST_STD_VER >= 11
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+        std::vector<int, min_allocator<int>> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert((c1 == std::vector<int, min_allocator<int>>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert((c2 == std::vector<int, min_allocator<int>>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int, min_allocator<int>> c1(a1, a1);
+        std::vector<int, min_allocator<int>> c2(a2, a2+sizeof(a2)/sizeof(a2[0]));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert((c1 == std::vector<int, min_allocator<int>>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int, min_allocator<int>> c1(a1, a1+sizeof(a1)/sizeof(a1[0]));
+        std::vector<int, min_allocator<int>> c2(a2, a2);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert((c2 == std::vector<int, min_allocator<int>>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        std::vector<int, min_allocator<int>> c1(a1, a1);
+        std::vector<int, min_allocator<int>> c2(a2, a2);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert(c1.empty());
+        assert(std::distance(c1.begin(), c1.end()) == 0);
+        assert(c2.empty());
+        assert(std::distance(c2.begin(), c2.end()) == 0);
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+    {
+        int a1[] = {1, 3, 7, 9, 10};
+        int a2[] = {0, 2, 4, 5, 6, 8, 11};
+        typedef min_allocator<int> A;
+        std::vector<int, A> c1(a1, a1+sizeof(a1)/sizeof(a1[0]), A());
+        std::vector<int, A> c2(a2, a2+sizeof(a2)/sizeof(a2[0]), A());
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+        swap(c1, c2);
+        assert((c1 == std::vector<int, A>(a2, a2+sizeof(a2)/sizeof(a2[0]))));
+        assert(c1.get_allocator() == A());
+        assert((c2 == std::vector<int, A>(a1, a1+sizeof(a1)/sizeof(a1[0]))));
+        assert(c2.get_allocator() == A());
+        assert(is_contiguous_container_asan_correct(c1));
+        assert(is_contiguous_container_asan_correct(c2));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER > 17
+    static_assert(tests());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap_noexcept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap_noexcept.compile.pass.cpp
new file mode 100644
index 0000000..830d05c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/sequences/vector/vector.special/swap_noexcept.compile.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <vector>
+
+// void swap(vector& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::propagate_on_container_swap::value ||
+//              allocator_traits<Allocator>::is_always_equal::value);
+
+// This tests a conforming extension
+
+#include <vector>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+void test()
+{
+    {
+        typedef std::vector<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::vector<MoveOnly, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif
+    {
+        typedef std::vector<MoveOnly, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::vector<MoveOnly, some_alloc<MoveOnly>> C;
+#if TEST_STD_VER >= 14
+        //  In C++14, if POCS is set, swapping the allocator is required not to throw
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#else
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif
+    }
+#if TEST_STD_VER >= 14
+    {
+        typedef std::vector<MoveOnly, some_alloc2<MoveOnly>> C;
+        // If the allocators are always equal, then the swap can be noexcept
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/set_allocator_requirement_test_templates.h b/app/src/main/cpp/libcxx/test/std/containers/set_allocator_requirement_test_templates.h
new file mode 100644
index 0000000..ad05ee4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/set_allocator_requirement_test_templates.h
@@ -0,0 +1,389 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SET_ALLOCATOR_REQUIREMENT_TEST_TEMPLATES_H
+#define SET_ALLOCATOR_REQUIREMENT_TEST_TEMPLATES_H
+
+// <set>
+// <unordered_set>
+
+// class set
+// class unordered_set
+
+// insert(...);
+// emplace(...);
+// emplace_hint(...);
+
+
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "container_test_types.h"
+
+
+template <class Container>
+void testSetInsert()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::insert(const value_type&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    assert(c.insert(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42);
+      assert(c.insert(v2).second == false);
+    }
+  }
+  {
+    // Testing C::insert(value_type&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    assert(c.insert(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42);
+      assert(c.insert(v2).second == false);
+    }
+  }
+  {
+    // Testing C::insert(value_type&&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&&>();
+    assert(c.insert(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42);
+      assert(c.insert(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::insert(const value_type&&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    assert(c.insert(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42);
+      assert(c.insert(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::insert(std::initializer_list<ValueTp>)"
+    Container c;
+    std::initializer_list<ValueTp> il = { ValueTp(1), ValueTp(2) };
+    cc->expect<ValueTp const&>(2);
+    c.insert(il);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      c.insert(il);
+    }
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type const&"
+    Container c;
+    const ValueTp ValueList[] = { ValueTp(1), ValueTp(2), ValueTp(3) };
+    cc->expect<ValueTp const&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      c.insert(std::begin(ValueList), std::end(ValueList));
+    }
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&&"
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1), ValueTp(2) , ValueTp(3) };
+    cc->expect<ValueTp&&>(3);
+    c.insert(std::move_iterator<ValueTp*>(std::begin(ValueList)),
+             std::move_iterator<ValueTp*>(std::end(ValueList)));
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp ValueList2[] = { ValueTp(1), ValueTp(2) , ValueTp(3) };
+      c.insert(std::move_iterator<ValueTp*>(std::begin(ValueList2)),
+               std::move_iterator<ValueTp*>(std::end(ValueList2)));
+    }
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&"
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1), ValueTp(2) , ValueTp(3) };
+    cc->expect<ValueTp const&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      c.insert(std::begin(ValueList), std::end(ValueList));
+    }
+  }
+}
+
+
+template <class Container>
+void testSetEmplace()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::emplace(const value_type&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    assert(c.emplace(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42);
+      assert(c.emplace(v2).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(value_type&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&>();
+    assert(c.emplace(v).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42);
+      assert(c.emplace(v2).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(value_type&&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&&>();
+    assert(c.emplace(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42);
+      assert(c.emplace(std::move(v2)).second == false);
+    }
+  }
+  {
+    // Testing C::emplace(const value_type&&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&&>();
+    assert(c.emplace(std::move(v)).second);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42);
+      assert(c.emplace(std::move(v2)).second == false);
+    }
+  }
+}
+
+
+template <class Container>
+void testSetEmplaceHint()
+{
+  typedef typename Container::value_type ValueTp;
+  typedef Container C;
+  typedef typename C::iterator It;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::emplace_hint(p, const value_type&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    It ret = c.emplace_hint(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42);
+      It ret2 = c.emplace_hint(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, value_type&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&>();
+    It ret = c.emplace_hint(c.end(), v);
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42);
+      It ret2 = c.emplace_hint(c.begin(), v2);
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, value_type&&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&&>();
+    It ret = c.emplace_hint(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      ValueTp v2(42);
+      It ret2 = c.emplace_hint(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+  {
+    // Testing C::emplace_hint(p, const value_type&&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&&>();
+    It ret = c.emplace_hint(c.end(), std::move(v));
+    assert(ret != c.end());
+    assert(c.size() == 1);
+    assert(!cc->unchecked());
+    {
+      DisableAllocationGuard g;
+      const ValueTp v2(42);
+      It ret2 = c.emplace_hint(c.begin(), std::move(v2));
+      assert(&(*ret2) == &(*ret));
+      assert(c.size() == 1);
+    }
+  }
+}
+
+
+template <class Container>
+void testMultisetInsert()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::insert(const value_type&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    c.insert(v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(value_type&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    c.insert(v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(value_type&&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&&>();
+    c.insert(std::move(v));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(std::initializer_list<ValueTp>)"
+    Container c;
+    std::initializer_list<ValueTp> il = { ValueTp(1), ValueTp(2) };
+    cc->expect<ValueTp const&>(2);
+    c.insert(il);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type const&"
+    Container c;
+    const ValueTp ValueList[] = { ValueTp(1), ValueTp(2), ValueTp(3) };
+    cc->expect<ValueTp const&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&&"
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1), ValueTp(2) , ValueTp(3) };
+    cc->expect<ValueTp&&>(3);
+    c.insert(std::move_iterator<ValueTp*>(std::begin(ValueList)),
+             std::move_iterator<ValueTp*>(std::end(ValueList)));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::insert(Iter, Iter) for *Iter = value_type&"
+    Container c;
+    ValueTp ValueList[] = { ValueTp(1), ValueTp(2) , ValueTp(1) };
+    cc->expect<ValueTp&>(3);
+    c.insert(std::begin(ValueList), std::end(ValueList));
+    assert(!cc->unchecked());
+  }
+}
+
+
+template <class Container>
+void testMultisetEmplace()
+{
+  typedef typename Container::value_type ValueTp;
+  ConstructController* cc = getConstructController();
+  cc->reset();
+  {
+    // Testing C::emplace(const value_type&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&>();
+    c.emplace(v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::emplace(value_type&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&>();
+    c.emplace(v);
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::emplace(value_type&&)"
+    Container c;
+    ValueTp v(42);
+    cc->expect<ValueTp&&>();
+    c.emplace(std::move(v));
+    assert(!cc->unchecked());
+  }
+  {
+    // Testing C::emplace(const value_type&&)"
+    Container c;
+    const ValueTp v(42);
+    cc->expect<const ValueTp&&>();
+    c.emplace(std::move(v));
+    assert(!cc->unchecked());
+  }
+}
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/containers/test_compare.h b/app/src/main/cpp/libcxx/test/std/containers/test_compare.h
new file mode 100644
index 0000000..1b4c491
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/test_compare.h
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_COMPARE_H
+#define TEST_COMPARE_H
+
+template <class T>
+struct test_equal_to
+{
+    int data_;
+    explicit test_equal_to() : data_(0) {}
+    explicit test_equal_to(int data) : data_(data) {}
+    bool operator()(const T& a, const T& b) const
+        { return a == b; }
+    friend bool operator==(const test_equal_to& a, const test_equal_to& b)
+        { return a.data_ == b.data_; }
+};
+
+template <class T>
+struct test_less
+{
+    int data_;
+    explicit test_less() : data_(0) {}
+    explicit test_less(int data) : data_(data) {}
+    bool operator()(const T& a, const T& b) const
+        { return a < b; }
+    friend bool operator==(const test_less& a, const test_less& b)
+        { return a.data_ == b.data_; }
+};
+
+#endif // TEST_COMPARE_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/test_hash.h b/app/src/main/cpp/libcxx/test/std/containers/test_hash.h
new file mode 100644
index 0000000..6419580
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/test_hash.h
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_HASH_H
+#define TEST_HASH_H
+
+#include <cstddef>
+#include <utility>
+
+template <class T>
+class test_hash
+{
+    int data_;
+public:
+    explicit test_hash(int data = 0) : data_(data) {}
+
+    std::size_t operator()(const T& x) const
+        {return std::hash<T>()(x);}
+
+    bool operator==(const test_hash& c) const
+        {return data_ == c.data_;}
+};
+
+#endif // TEST_HASH_H
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/iterator_difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/iterator_difference_type.pass.cpp
new file mode 100644
index 0000000..fc5ccbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/iterator_difference_type.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <unordered_map>
+#include <unordered_set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+
+template <class Map, class ValueTp, class PtrT, class CPtrT>
+void testUnorderedMap() {
+  typedef typename Map::difference_type Diff;
+  {
+    typedef typename Map::iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp&>::value), "");
+    static_assert((std::is_same<typename It::pointer, PtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+  {
+    typedef typename Map::const_iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp const&>::value), "");
+    static_assert((std::is_same<typename It::pointer, CPtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+  {
+    typedef typename Map::local_iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp&>::value), "");
+    static_assert((std::is_same<typename It::pointer, PtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+  {
+    typedef typename Map::const_local_iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp const&>::value), "");
+    static_assert((std::is_same<typename It::pointer, CPtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+}
+
+
+template <class Set, class ValueTp, class CPtrT>
+void testUnorderedSet() {
+  static_assert((std::is_convertible<typename Set::iterator,
+                                     typename Set::const_iterator>::value), "");
+  static_assert((std::is_convertible<typename Set::local_iterator,
+                                     typename Set::const_local_iterator>::value), "");
+  typedef typename Set::difference_type Diff;
+  {
+    typedef typename Set::iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp const&>::value), "");
+    static_assert((std::is_same<typename It::pointer, CPtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+
+  }
+  {
+    typedef typename Set::local_iterator It;
+    static_assert((std::is_same<typename It::value_type, ValueTp>::value), "");
+    static_assert((std::is_same<typename It::reference, ValueTp const&>::value), "");
+    static_assert((std::is_same<typename It::pointer, CPtrT>::value), "");
+    static_assert((std::is_same<typename It::difference_type, Diff>::value), "");
+  }
+}
+
+int main(int, char**) {
+  {
+    typedef std::unordered_map<int, int> Map;
+    typedef std::pair<const int, int> ValueTp;
+    testUnorderedMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, Alloc> Map;
+    testUnorderedMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, Alloc> Map;
+    testUnorderedMap<Map, ValueTp, min_pointer<ValueTp>, min_pointer<const ValueTp>>();
+  }
+#endif
+  {
+    typedef std::unordered_multimap<int, int> Map;
+    typedef std::pair<const int, int> ValueTp;
+    testUnorderedMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, Alloc> Map;
+    testUnorderedMap<Map, ValueTp, ValueTp*, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::pair<const int, int> ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, Alloc> Map;
+    testUnorderedMap<Map, ValueTp, min_pointer<ValueTp>, min_pointer<const ValueTp>>();
+  }
+#endif
+  {
+    typedef int ValueTp;
+    typedef std::unordered_set<ValueTp> Set;
+    testUnorderedSet<Set, ValueTp, ValueTp const*>();
+  }
+  {
+    typedef int ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::unordered_set<ValueTp, std::hash<ValueTp>, std::equal_to<ValueTp>, Alloc> Set;
+    testUnorderedSet<Set, ValueTp, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef int ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::unordered_set<ValueTp, std::hash<ValueTp>, std::equal_to<ValueTp>, Alloc> Set;
+    testUnorderedSet<Set, ValueTp, min_pointer<const ValueTp>>();
+  }
+#endif
+  {
+    typedef int ValueTp;
+    typedef std::unordered_multiset<ValueTp> Set;
+    testUnorderedSet<Set, ValueTp, ValueTp const*>();
+  }
+  {
+    typedef int ValueTp;
+    typedef test_allocator<ValueTp> Alloc;
+    typedef std::unordered_multiset<ValueTp, std::hash<ValueTp>, std::equal_to<ValueTp>, Alloc> Set;
+    testUnorderedSet<Set, ValueTp, ValueTp const*>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef int ValueTp;
+    typedef min_allocator<ValueTp> Alloc;
+    typedef std::unordered_multiset<ValueTp, std::hash<ValueTp>, std::equal_to<ValueTp>, Alloc> Set;
+    testUnorderedSet<Set, ValueTp, min_pointer<const ValueTp>>();
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..7059220
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+//   The container's value type must be the same as the allocator's value type
+
+#include <unordered_map>
+
+int main(int, char**)
+{
+    std::unordered_map<int, int, std::hash<int>, std::less<int>, std::allocator<long> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket.pass.cpp
new file mode 100644
index 0000000..0f2e721
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type bucket(const key_type& __k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 5);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 5);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket_count.pass.cpp
new file mode 100644
index 0000000..6283408
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket_count.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type bucket_count() const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket_size.pass.cpp
new file mode 100644
index 0000000..110ac5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/bucket_size.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type bucket_size(size_type n) const
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 5);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 1);
+        LIBCPP_ASSERT(c.bucket_size(2) == 1);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 5);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 1);
+        LIBCPP_ASSERT(c.bucket_size(2) == 1);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/compare.pass.cpp
new file mode 100644
index 0000000..12364fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/compare.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// https://llvm.org/PR16538
+// https://llvm.org/PR16549
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Key {
+  template <typename T> Key(const T&) {}
+  bool operator== (const Key&) const { return true; }
+};
+
+namespace std
+{
+    template <>
+    struct hash<Key>
+    {
+        size_t operator()(Key const &) const {return 0;}
+    };
+}
+
+int main(int, char**)
+{
+    typedef std::unordered_map<Key, int> MapT;
+    typedef MapT::iterator Iter;
+    MapT map;
+    Iter it = map.find(Key(0));
+    assert(it == map.end());
+    std::pair<Iter, bool> result = map.insert(std::make_pair(Key(0), 42));
+    assert(result.second);
+    assert(result.first->second == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/contains.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/contains.pass.cpp
new file mode 100644
index 0000000..e757517
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/contains.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <unordered_map>
+
+// <unordered_map>
+
+// bool contains(const key_type& x) const;
+
+template <typename T, typename P, typename B, typename... Pairs>
+void test(B bad, Pairs... args) {
+    T map;
+    P pairs[] = {args...};
+
+    for (auto& p : pairs) map.insert(p);
+    for (auto& p : pairs) assert(map.contains(p.first));
+
+    assert(!map.contains(bad));
+}
+
+struct E { int a = 1; double b = 1; char c = 1; };
+
+int main(int, char**)
+{
+    {
+        test<std::unordered_map<char, int>, std::pair<char, int> >(
+            'e', std::make_pair('a', 10), std::make_pair('b', 11),
+            std::make_pair('c', 12), std::make_pair('d', 13));
+
+        test<std::unordered_map<char, char>, std::pair<char, char> >(
+            'e', std::make_pair('a', 'a'), std::make_pair('b', 'a'),
+            std::make_pair('c', 'a'), std::make_pair('d', 'b'));
+
+        test<std::unordered_map<int, E>, std::pair<int, E> >(
+            -1, std::make_pair(1, E{}), std::make_pair(2, E{}),
+            std::make_pair(3, E{}), std::make_pair(4, E{}));
+    }
+    {
+        test<std::unordered_multimap<char, int>, std::pair<char, int> >(
+            'e', std::make_pair('a', 10), std::make_pair('b', 11),
+            std::make_pair('c', 12), std::make_pair('d', 13));
+
+        test<std::unordered_multimap<char, char>, std::pair<char, char> >(
+            'e', std::make_pair('a', 'a'), std::make_pair('b', 'a'),
+            std::make_pair('c', 'a'), std::make_pair('d', 'b'));
+
+        test<std::unordered_multimap<int, E>, std::pair<int, E> >(
+            -1, std::make_pair(1, E{}), std::make_pair(2, E{}),
+            std::make_pair(3, E{}), std::make_pair(4, E{}));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/contains.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/contains.transparent.pass.cpp
new file mode 100644
index 0000000..b8742cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/contains.transparent.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <typename K>
+// bool contains(const K& x) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<>>;
+      test_transparent_contains<M>({{1, 2}, {2, 3}});
+      test_transparent_contains<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash_final, transparent_equal_final>;
+      test_transparent_contains<M>({{1, 2}, {2, 3}});
+      test_transparent_contains<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_contains<M>({{1, 2}, {2, 3}});
+      test_non_transparent_contains<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<M>({{1, 2}, {2, 3}});
+      test_non_transparent_contains<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<M>({{1, 2}, {2, 3}});
+      test_non_transparent_contains<const M>({{1, 2}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/count.pass.cpp
new file mode 100644
index 0000000..a003208
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/count.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type count(const key_type& k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(5) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(5) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/count.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/count.transparent.pass.cpp
new file mode 100644
index 0000000..1ae5a94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/count.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <typename K>
+// size_type count(const K& k) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<>>;
+      test_transparent_count<M>({{1, 2}, {2, 3}});
+      test_transparent_count<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash_final, transparent_equal_final>;
+      test_transparent_count<M>({{1, 2}, {2, 3}});
+      test_transparent_count<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_count<M>({{1, 2}, {2, 3}});
+      test_non_transparent_count<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<M>({{1, 2}, {2, 3}});
+      test_non_transparent_count<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<M>({{1, 2}, {2, 3}});
+      test_non_transparent_count<const M>({{1, 2}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/empty.pass.cpp
new file mode 100644
index 0000000..da6d48d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// bool empty() const noexcept;
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_map<int, double> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_map<int, double, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/empty.verify.cpp
new file mode 100644
index 0000000..269250b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::unordered_map<int, int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/eq.pass.cpp
new file mode 100644
index 0000000..6fd22ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/eq.pass.cpp
@@ -0,0 +1,201 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash, class Pred, class Alloc>
+// bool
+// operator==(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
+//            const unordered_map<Key, T, Hash, Pred, Alloc>& y);
+//
+// template <class Key, class T, class Hash, class Pred, class Alloc>
+// bool
+// operator!=(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
+//            const unordered_map<Key, T, Hash, Pred, Alloc>& y);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(testEquality(c1, c2, false));
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert(testEquality(c1, c2, true));
+        c2.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, false));
+        c1.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        assert(testEquality(c1, c2, true));
+        c1.insert(P(90, "ninety"));
+        c2.insert(P(100, "onehundred"));
+        assert(testEquality(c1, c2, false));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(testEquality(c1, c2, false));
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert(testEquality(c1, c2, true));
+        c2.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, false));
+        c1.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        assert(testEquality(c1, c2, true));
+        c1.insert(P(90, "ninety"));
+        c2.insert(P(100, "onehundred"));
+        assert(testEquality(c1, c2, false));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range.transparent.pass.cpp
new file mode 100644
index 0000000..07b34f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <typename K>
+// pair<iterator, iterator> equal_range(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<>>;
+      test_transparent_equal_range<M>({{1, 2}, {2, 3}});
+      test_transparent_equal_range<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash_final, transparent_equal_final>;
+      test_transparent_equal_range<M>({{1, 2}, {2, 3}});
+      test_transparent_equal_range<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_equal_range<M>({{1, 2}, {2, 3}});
+      test_non_transparent_equal_range<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<M>({{1, 2}, {2, 3}});
+      test_non_transparent_equal_range<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<M>({{1, 2}, {2, 3}});
+      test_non_transparent_equal_range<const M>({{1, 2}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range_const.pass.cpp
new file mode 100644
index 0000000..eb8beae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range_const.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef C::const_iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef C::const_iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range_non_const.pass.cpp
new file mode 100644
index 0000000..f0e268e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/equal_range_non_const.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// pair<iterator, iterator> equal_range(const key_type& k);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef C::iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef C::iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/erase_if.pass.cpp
new file mode 100644
index 0000000..54a8b9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/erase_if.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash, class Pred, class Allocator, class Predicate>
+//   typename unordered_map<Key, T, Hash, Pred, Allocator>::size_type
+//   erase_if(unordered_map<Key, T, Hash, Pred, Allocator>& c, Predicate pred);
+
+#include <unordered_map>
+#include <algorithm>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+using Init = std::initializer_list<int>;
+template <typename M>
+M make (Init vals)
+{
+    M ret;
+    for (int v : vals)
+        ret[static_cast<typename M::key_type>(v)] = static_cast<typename M::mapped_type>(v + 10);
+    return ret;
+}
+
+template <typename M, typename Pred>
+void test0(Init vals, Pred p, Init expected, size_t expected_erased_count) {
+  M s = make<M>(vals);
+  ASSERT_SAME_TYPE(typename M::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  M e = make<M>(expected);
+  assert((std::is_permutation(s.begin(), s.end(), e.begin(), e.end())));
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v.first == 1;};
+    auto is2 = [](auto v) { return v.first == 2;};
+    auto is3 = [](auto v) { return v.first == 3;};
+    auto is4 = [](auto v) { return v.first == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0<S>({}, is1, {}, 0);
+
+    test0<S>({1}, is1, {}, 1);
+    test0<S>({1}, is2, {1}, 0);
+
+    test0<S>({1, 2}, is1, {2}, 1);
+    test0<S>({1, 2}, is2, {1}, 1);
+    test0<S>({1, 2}, is3, {1, 2}, 0);
+
+    test0<S>({1, 2, 3}, is1, {2, 3}, 1);
+    test0<S>({1, 2, 3}, is2, {1, 3}, 1);
+    test0<S>({1, 2, 3}, is3, {1, 2}, 1);
+    test0<S>({1, 2, 3}, is4, {1, 2, 3}, 0);
+
+    test0<S>({1, 2, 3}, True, {}, 3);
+    test0<S>({1, 2, 3}, False, {1, 2, 3}, 0);
+}
+
+int main(int, char**)
+{
+    test<std::unordered_map<int, int>>();
+    test<std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, int>>>> ();
+    test<std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, test_allocator<std::pair<const int, int>>>> ();
+
+    test<std::unordered_map<long, short>>();
+    test<std::unordered_map<short, double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find.transparent.pass.cpp
new file mode 100644
index 0000000..623b86f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <typename K>
+// iterator find(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<>>;
+      test_transparent_find<M>({{1, 2}, {2, 3}});
+      test_transparent_find<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash_final, transparent_equal_final>;
+      test_transparent_find<M>({{1, 2}, {2, 3}});
+      test_transparent_find<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_find<M>({{1, 2}, {2, 3}});
+      test_non_transparent_find<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_map, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<M>({{1, 2}, {2, 3}});
+      test_non_transparent_find<const M>({{1, 2}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_map, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<M>({{1, 2}, {2, 3}});
+      test_non_transparent_find<const M>({{1, 2}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find_const.pass.cpp
new file mode 100644
index 0000000..fa8417b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find_const.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// const_iterator find(const key_type& k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find_non_const.pass.cpp
new file mode 100644
index 0000000..00c5605
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/find_non_const.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator find(const key_type& k);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/get_allocator.pass.cpp
new file mode 100644
index 0000000..64836ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/get_allocator.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// allocator_type get_allocator() const
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::pair<const int, std::string> ValueType;
+    {
+        std::allocator<ValueType> alloc;
+        const std::unordered_map<int, std::string> m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+    {
+        other_allocator<ValueType> alloc(1);
+        const std::unordered_map<int, std::string, std::hash<int>,
+                                 std::equal_to<int>,
+                                 other_allocator<ValueType> > m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/incomplete_type.pass.cpp
new file mode 100644
index 0000000..cf2cc67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/incomplete_type.pass.cpp
@@ -0,0 +1,40 @@
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Check that std::unordered_map and its iterators can be instantiated with an incomplete
+// type.
+
+#include <unordered_map>
+
+#include "test_macros.h"
+
+template <class Tp>
+struct MyHash {
+  MyHash() {}
+  std::size_t operator()(Tp const&) const {return 42;}
+};
+
+struct A {
+    typedef std::unordered_map<A, A, MyHash<A> > Map;
+    Map m;
+    Map::iterator it;
+    Map::const_iterator cit;
+    Map::local_iterator lit;
+    Map::const_local_iterator clit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterator.operators.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterator.operators.addressof.compile.pass.cpp
new file mode 100644
index 0000000..856b782
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterator.operators.addressof.compile.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// Validate the constructors of the (const)(_local)_iterator classes to be
+// properly guarded against ADL-hijacking operator&.
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+template <class ToIterator, class FromIterator>
+void test() {
+  FromIterator from;
+  ToIterator copy(from);
+  copy = from;
+
+  ToIterator move(std::move(from));
+  from = FromIterator();
+  move = std::move(from);
+}
+
+void test() {
+  {
+    using I = std::unordered_map<operator_hijacker, operator_hijacker>::iterator;
+    using CI = std::unordered_map<operator_hijacker, operator_hijacker>::const_iterator;
+    test<I, I>();
+    test<CI, I>();
+    test<CI, CI>();
+  }
+  {
+    using IL = std::unordered_map<operator_hijacker, operator_hijacker>::local_iterator;
+    using CIL = std::unordered_map<operator_hijacker, operator_hijacker>::const_local_iterator;
+    test<IL, IL>();
+    test<CIL, IL>();
+    test<CIL, CIL>();
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..ff4b487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, local_iterator, const_local_iterator
+
+#include <unordered_map>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+using iterator = std::unordered_map<int, int>::iterator;
+using const_iterator = std::unordered_map<int, int>::const_iterator;
+using local_iterator = std::unordered_map<int, int>::local_iterator;
+using const_local_iterator = std::unordered_map<int, int>::const_local_iterator;
+using value_type = std::pair<const int, int>;
+
+static_assert(std::forward_iterator<iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(std::indirectly_movable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::forward_iterator<const_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(std::indirectly_movable<const_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<const_iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<const_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
+
+static_assert(std::forward_iterator<local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<local_iterator>);
+static_assert(!std::indirectly_writable<local_iterator, value_type>);
+static_assert(std::sentinel_for<local_iterator, local_iterator>);
+static_assert(std::sentinel_for<local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<local_iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<local_iterator, local_iterator>);
+
+static_assert(std::forward_iterator<const_local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_local_iterator>);
+static_assert(!std::indirectly_writable<const_local_iterator, value_type>);
+static_assert(std::sentinel_for<const_local_iterator, local_iterator>);
+static_assert(std::sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<const_local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<const_local_iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<const_local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<const_local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<const_local_iterator, const_local_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterators.pass.cpp
new file mode 100644
index 0000000..0b4e02e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/iterators.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator       begin()        {return __table_.begin();}
+// iterator       end()          {return __table_.end();}
+// const_iterator begin()  const {return __table_.begin();}
+// const_iterator end()    const {return __table_.end();}
+// const_iterator cbegin() const {return __table_.begin();}
+// const_iterator cend()   const {return __table_.end();}
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::unordered_map<int,double> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/load_factor.pass.cpp
new file mode 100644
index 0000000..6bb7f89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/load_factor.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// float load_factor() const
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cmath>
+#include <cfloat>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/local_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/local_iterators.pass.cpp
new file mode 100644
index 0000000..5da3a0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/local_iterators.pass.cpp
@@ -0,0 +1,423 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 1);
+        assert(i->second == "one");
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 2);
+        assert(i->second == "two");
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_bucket_count.pass.cpp
new file mode 100644
index 0000000..eb8f3e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_bucket_count.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type max_bucket_count() const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_load_factor.pass.cpp
new file mode 100644
index 0000000..070ba1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_load_factor.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_size.pass.cpp
new file mode 100644
index 0000000..7c2ec58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/max_size.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <type_traits>
+#include <unordered_map>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  typedef std::pair<const int, int> KV;
+  {
+    typedef limited_allocator<KV, 10> A;
+    typedef std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, A>
+        C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<KV, (size_t)-1> A;
+    typedef std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, A>
+        C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::unordered_map<char, int> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..765277c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// unordered_map
+
+#include <unordered_map>
+
+#include <concepts>
+#include <ranges>
+
+#include "test_macros.h"
+
+using range = std::unordered_map<int, int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::forward_range<range>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::forward_range<range const>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/rehash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/rehash.pass.cpp
new file mode 100644
index 0000000..c8f079f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/rehash.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// void rehash(size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void rehash_postcondition(const C& c, size_t n)
+{
+    assert(c.bucket_count() >= c.size() / c.max_load_factor() && c.bucket_count() >= n);
+}
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 4);
+    assert(c.at(1) == "one");
+    assert(c.at(2) == "two");
+    assert(c.at(3) == "three");
+    assert(c.at(4) == "four");
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/reserve.pass.cpp
new file mode 100644
index 0000000..622a969
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/reserve.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// void reserve(size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 4);
+    assert(c.at(1) == "one");
+    assert(c.at(2) == "two");
+    assert(c.at(3) == "three");
+    assert(c.at(4) == "four");
+}
+
+void reserve_invariant(size_t n) // LWG #2156
+{
+    for (size_t i = 0; i < n; ++i)
+    {
+        std::unordered_map<size_t, size_t> c;
+        c.reserve(n);
+        size_t buckets = c.bucket_count();
+        for (size_t j = 0; j < i; ++j)
+        {
+            c[i] = i;
+            assert(buckets == c.bucket_count());
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        assert(c.bucket_count() >= 2);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        assert(c.bucket_count() >= 2);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#endif
+    reserve_invariant(20);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/size.pass.cpp
new file mode 100644
index 0000000..d4e7cb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/size.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// size_type size() const noexcept;
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_map<int, double> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_map<int, double, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/swap_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/swap_member.pass.cpp
new file mode 100644
index 0000000..955aa31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/swap_member.pass.cpp
@@ -0,0 +1,573 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// void swap(unordered_map& __u);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+
+#include "../../test_compare.h"
+#include "../../test_hash.h"
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/types.pass.cpp
new file mode 100644
index 0000000..403a0c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/types.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+// {
+// public:
+//     // types
+//     typedef Key                                                        key_type;
+//     typedef T                                                          mapped_type;
+//     typedef Hash                                                       hasher;
+//     typedef Pred                                                       key_equal;
+//     typedef Alloc                                                      allocator_type;
+//     typedef pair<const key_type, mapped_type>                          value_type;
+//     typedef value_type&                                                reference;
+//     typedef const value_type&                                          const_reference;
+//     typedef typename allocator_traits<allocator_type>::pointer         pointer;
+//     typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
+//     typedef typename allocator_traits<allocator_type>::size_type       size_type;
+//     typedef typename allocator_traits<allocator_type>::difference_type difference_type;
+
+#include <unordered_map>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<char, short> C;
+        static_assert((std::is_same<C::key_type, char>::value), "");
+        static_assert((std::is_same<C::mapped_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, std::allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::value_type, std::pair<const C::key_type, C::mapped_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, C::value_type*>::value), "");
+        static_assert((std::is_same<C::const_pointer, const C::value_type*>::value), "");
+        static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<char, short, std::hash<char>, std::equal_to<char>,
+                            min_allocator<std::pair<const char, short>>> C;
+        static_assert((std::is_same<C::key_type, char>::value), "");
+        static_assert((std::is_same<C::mapped_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, min_allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::value_type, std::pair<const C::key_type, C::mapped_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, min_pointer<C::value_type>>::value), "");
+        static_assert((std::is_same<C::const_pointer, min_pointer<const C::value_type>>::value), "");
+    //  min_allocator doesn't have a size_type, so one gets synthesized
+        static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp
new file mode 100644
index 0000000..af97adf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/allocator.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// explicit unordered_map(const allocator_type& __a);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(test_allocator<std::pair<const NotConstructible, NotConstructible> >(10));
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(min_allocator<std::pair<const NotConstructible, NotConstructible> >{});
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible>> A;
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        C c(A{});
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == A{});
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef std::unordered_map<T, T, HF, Comp, A> C;
+
+        A a(10);
+        C c(2, a);
+        LIBCPP_ASSERT(c.bucket_count() == 2);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef std::unordered_map<T, T, HF, Comp, A> C;
+
+        A a(10);
+        HF hf(12);
+        C c(2, hf, a);
+        LIBCPP_ASSERT(c.bucket_count() == 2);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..d001359
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map& operator=(const unordered_map& u);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  {
+    std::unordered_map<int, operator_hijacker> mo;
+    std::unordered_map<int, operator_hijacker> m;
+    m = mo;
+  }
+  {
+    std::unordered_map<operator_hijacker, int> mo;
+    std::unordered_map<operator_hijacker, int> m;
+    m = mo;
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_copy.pass.cpp
new file mode 100644
index 0000000..d0b290d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_copy.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map& operator=(const unordered_map& u);
+
+#include <algorithm>
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<const int, std::string> P;
+        const P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C *p = &c;
+        c = *p;
+        assert(c.size() == 4);
+        assert(std::is_permutation(c.begin(), c.end(), a));
+    }
+    {
+        typedef other_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef min_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_init.pass.cpp
new file mode 100644
index 0000000..4aa56c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_init.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map& operator=(initializer_list<value_type> il);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c =   {
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        c =     {
+                    P(1, "one"),
+                    P(2, "two"),
+                    P(3, "three"),
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef min_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c =   {
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        c =     {
+                    P(1, "one"),
+                    P(2, "two"),
+                    P(3, "three"),
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..6dbd7aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_move.addressof.compile.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map& operator=(unordered_map&&)
+//     noexcept(
+//         allocator_type::propagate_on_container_move_assignment::value &&
+//         is_nothrow_move_assignable<allocator_type>::value &&
+//         is_nothrow_move_assignable<hasher>::value &&
+//         is_nothrow_move_assignable<key_equal>::value);
+
+// Validate whether the container can be move-assigned with an ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  {
+    std::unordered_map<int, operator_hijacker> mo;
+    std::unordered_map<int, operator_hijacker> m;
+    m = std::move(mo);
+  }
+  {
+    std::unordered_map<operator_hijacker, int> mo;
+    std::unordered_map<operator_hijacker, int> m;
+    m = std::move(mo);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_move.pass.cpp
new file mode 100644
index 0000000..dc859e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/assign_move.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map& operator=(unordered_map&& u);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(10)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c0.size() == 0);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef other_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c0.size() == 0);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef min_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c0.size() == 0);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..22c0d08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// The test requires access control SFINAE.
+
+// <unordered_map>
+
+// Check that std::unordered_map fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <unordered_map>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs == rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_map<int, int, std::hash<int>, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/copy.pass.cpp
new file mode 100644
index 0000000..6dad15e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/copy.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(const unordered_map& u);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   other_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            other_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (other_allocator<std::pair<const int, std::string> >(-2)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/copy_alloc.pass.cpp
new file mode 100644
index 0000000..1d9cf9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/copy_alloc.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(const unordered_map& u, const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c(c0, test_allocator<std::pair<const int, std::string> >(5));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(5)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C c(c0, min_allocator<std::pair<const int, std::string> >());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        C c(c0, A{});
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct.fail.cpp
new file mode 100644
index 0000000..aa7a058
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct.fail.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// template<class InputIterator,
+//          class Hash = hash<iter-key-type<InputIterator>>,
+//          class Pred = equal_to<iter-key-type<InputIterator>>,
+//          class Allocator = allocator<iter-to-alloc-type<InputIterator>>>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash, Pred,
+//                    Allocator>;
+//
+// template<class Key, class T, class Hash = hash<Key>,
+//          class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
+// unordered_map(initializer_list<pair<Key, T>>,
+//               typename see below::size_type = see below, Hash = Hash(),
+//               Pred = Pred(), Allocator = Allocator())
+//   -> unordered_map<Key, T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_map(InputIterator, InputIterator, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, typename see below::size_type, Allocator)
+//   -> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, Allocator)
+//   -> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Hash, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, typename see below::size_type, Hash,
+//               Allocator)
+//   -> unordered_map<Key, T, Hash, equal_to<Key>, Allocator>;
+
+#include <functional>
+#include <unordered_map>
+
+int main(int, char**)
+{
+    using P = std::pair<const int, int>;
+    {
+        // cannot deduce Key from nothing
+        std::unordered_map m; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Size)
+        std::unordered_map m(42); // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash)
+        std::unordered_map m(42, std::hash<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred)
+        std::unordered_map m(42, std::hash<int>(), std::equal_to<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred, Allocator)
+        std::unordered_map m(42, std::hash<int>(), std::equal_to<int>(), std::allocator<P>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Allocator)
+        std::unordered_map m(std::allocator<P>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Allocator)
+        std::unordered_map m(42, std::allocator<P>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Allocator)
+        std::unordered_map m(42, std::hash<int>(), std::allocator<P>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_map'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct.pass.cpp
new file mode 100644
index 0000000..9a36348
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct.pass.cpp
@@ -0,0 +1,226 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Hash = hash<iter-key-type<InputIterator>>,
+//          class Pred = equal_to<iter-key-type<InputIterator>>,
+//          class Allocator = allocator<iter-to-alloc-type<InputIterator>>>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash, Pred,
+//                    Allocator>;
+//
+// template<class Key, class T, class Hash = hash<Key>,
+//          class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
+// unordered_map(initializer_list<pair<Key, T>>,
+//               typename see below::size_type = see below, Hash = Hash(),
+//               Pred = Pred(), Allocator = Allocator())
+//   -> unordered_map<Key, T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_map(InputIterator, InputIterator, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, typename see below::size_type, Allocator)
+//   -> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, Allocator)
+//   -> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Hash, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, typename see below::size_type, Hash,
+//               Allocator)
+//   -> unordered_map<Key, T, Hash, equal_to<Key>, Allocator>;
+
+#include <algorithm> // is_permutation
+#include <cassert>
+#include <climits> // INT_MAX
+#include <iterator>
+#include <type_traits>
+#include <unordered_map>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    const PC expected_m[] = { {1,1}, {2,2}, {3,1}, {INT_MAX,1} };
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<long long>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<int>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<long long>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<long long>(), std::equal_to<>(), test_allocator<PC>(0, 41));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 41);
+    }
+
+    {
+    std::unordered_map<int, long> source;
+    std::unordered_map m(source);
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_map<int, long> source;
+    std::unordered_map m{source};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_map<int, long, std::hash<long long>, std::equal_to<>, test_allocator<PC>> source;
+    test_allocator<PC> a(0, 42);
+    std::unordered_map m(source, a);
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.get_allocator().get_id() == 42);
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_map<int, long, std::hash<long long>, std::equal_to<>, test_allocator<PC>> source;
+    test_allocator<PC> a(0, 43);
+    std::unordered_map m{source, a};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.get_allocator().get_id() == 43);
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_map m { P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} };
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<long long>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<long long>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<long long>(), std::equal_to<>(), test_allocator<PC>(0, 44));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 44);
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, test_allocator<PC>(0, 45));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<long long>(), test_allocator<PC>(0, 46));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 46);
+    }
+
+    {
+    std::unordered_map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, test_allocator<PC>(0, 47));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 47);
+    }
+
+    {
+    std::unordered_map m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<long long>(), test_allocator<PC>(0, 48));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<long long>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 48);
+    }
+
+    {
+    // Examples from LWG3025
+    std::unordered_map m{std::pair{1, 1}, {2, 2}, {3, 3}};
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, int>);
+
+    std::unordered_map m2{m.begin(), m.end()};
+    ASSERT_SAME_TYPE(decltype(m2), std::unordered_map<int, int>);
+    }
+
+    {
+    // Examples from LWG3531
+    std::unordered_map m1{{std::pair{1, 2}, {3, 4}}, 0};
+    ASSERT_SAME_TYPE(decltype(m1), std::unordered_map<int, int>);
+
+    using value_type = std::pair<const int, int>;
+    std::unordered_map m2{{value_type{1, 2}, {3, 4}}, 0};
+    ASSERT_SAME_TYPE(decltype(m2), std::unordered_map<int, int>);
+    }
+
+    UnorderedContainerDeductionGuidesSfinaeAway<std::unordered_map, std::unordered_map<int, long>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct_const.pass.cpp
new file mode 100644
index 0000000..547eef0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/deduct_const.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Hash = hash<iter-key-type<InputIterator>>,
+//          class Pred = equal_to<iter-key-type<InputIterator>>,
+//          class Allocator = allocator<iter-to-alloc-type<InputIterator>>>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash, Pred,
+//                    Allocator>;
+//
+// template<class Key, class T, class Hash = hash<Key>,
+//          class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
+// unordered_map(initializer_list<pair<Key, T>>,
+//               typename see below::size_type = see below, Hash = Hash(),
+//               Pred = Pred(), Allocator = Allocator())
+//   -> unordered_map<Key, T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_map(InputIterator, InputIterator, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_map(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
+//   -> unordered_map<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, typename see below::size_type, Allocator)
+//   -> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, Allocator)
+//   -> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Hash, class Allocator>
+// unordered_map(initializer_list<pair<Key, T>>, typename see below::size_type, Hash,
+//               Allocator)
+//   -> unordered_map<Key, T, Hash, equal_to<Key>, Allocator>;
+
+#include <algorithm> // std::is_permutation
+#include <cassert>
+#include <climits> // INT_MAX
+#include <iterator>
+#include <type_traits>
+#include <unordered_map>
+
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    const PC expected_m[] = { {1,1L}, {2,2L}, {3,1L}, {INT_MAX,1L} };
+
+    {
+    const PC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::unordered_map m(std::begin(arr), std::end(arr));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<short>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<int>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<short>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1L}, {2,2L}, {1,1L}, {INT_MAX,1L}, {3,1L} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<short>(), std::equal_to<>(), test_allocator<PC>(0, 41));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 41);
+    }
+
+    {
+    std::unordered_map m { PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} };
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>(), std::equal_to<>(), test_allocator<PC>(0, 44));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 44);
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, test_allocator<PC>(0, 45));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_map m(std::begin(arr), std::end(arr), 42, std::hash<short>(), test_allocator<PC>(0, 46));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 46);
+    }
+
+    {
+    std::unordered_map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, test_allocator<PC>(0, 47));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 47);
+    }
+
+    {
+    std::unordered_map m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>(), test_allocator<PC>(0, 48));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_map<int, long, std::hash<short>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 48);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/default.pass.cpp
new file mode 100644
index 0000000..a4bdb52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/default.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map();
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible>> A;
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        {
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == A());
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+        {
+        A a;
+        C c(a);
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+    }
+    {
+        std::unordered_map<int, int> c = {};
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/default_noexcept.pass.cpp
new file mode 100644
index 0000000..2fff7fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/default_noexcept.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// unordered_map()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "../../../test_hash.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..0775b28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/dtor_noexcept.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// ~unordered_map() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    ~some_hash() noexcept(false);
+
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/hash_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/hash_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..589314a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/hash_copy_constructible.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// The test requires access control SFINAE.
+
+// <unordered_map>
+
+// Check that std::unordered_map fails to instantiate if the hash function is
+// not copy-constructible. This is mentioned in LWG issue 2436
+
+#include <unordered_map>
+
+template <class T>
+struct Hash {
+    std::size_t operator () (const T& lhs) const { return 0; }
+
+    Hash () {}
+private:
+    Hash (const Hash &); // declared but not defined
+};
+
+
+int main(int, char**) {
+    std::unordered_map<int, int, Hash<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp
new file mode 100644
index 0000000..f20ba84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init.pass.cpp
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c = {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c = {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        A a(42);
+        C c ( {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, a);
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == a);
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        HF hf(42);
+        A a(43);
+        C c ( {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, hf, a);
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == test_hash<int>()));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == a);
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size.pass.cpp
new file mode 100644
index 0000000..dc26c81
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il, size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_allocator.pass.cpp
new file mode 100644
index 0000000..7e25ba2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_allocator.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il, size_type n, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc) {
+    typedef std::unordered_map<int, std::string,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator
+                               > C;
+    typedef std::pair<int, std::string> P;
+
+    C c({
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+         },
+         7,
+         alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.at(1) == "one");
+    assert(c.at(2) == "two");
+    assert(c.at(3) == "three");
+    assert(c.at(4) == "four");
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> P;
+
+    test(test_allocator<P>(10));
+    test(min_allocator<P>());
+    test(explicit_allocator<P>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash.pass.cpp
new file mode 100644
index 0000000..319af0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il, size_type n, const hasher& hf);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..70a631d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_allocator.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il, size_type n,
+//               const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc) {
+    typedef std::unordered_map<int, std::string,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator
+                               > C;
+    typedef std::pair<int, std::string> P;
+
+    C c({
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+         },
+         7,
+         test_hash<int>(5),
+         alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.at(1) == "one");
+    assert(c.at(2) == "two");
+    assert(c.at(3) == "three");
+    assert(c.at(4) == "four");
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> P;
+
+    test(test_allocator<P>(10));
+    test(min_allocator<P>());
+    test(explicit_allocator<P>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..20098ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_equal.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..f235ae0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/init_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter.pass.cpp
new file mode 100644
index 0000000..120826f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIterator>
+//     unordered_map(InputIterator first, InputIterator last);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(arr), cpp17_input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 14);
+        assert(c.bucket_count() >= 14);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_map<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        HF hf(42);
+        A a(43);
+        C c(cpp17_input_iterator<P*>(arr), cpp17_input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 14, hf, a);
+        assert(c.bucket_count() >= 14);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size.pass.cpp
new file mode 100644
index 0000000..f06feda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIterator>
+//     unordered_map(InputIterator first, InputIterator last, size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            10
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 11);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            10
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 11);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_allocator.pass.cpp
new file mode 100644
index 0000000..11ca338
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_allocator.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIt>
+// unordered_map(InputIt first, InputIt last, size_type n, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_map<int, std::string,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator
+                               > C;
+    typedef std::pair<int, std::string> P;
+    P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+
+    C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a) / sizeof(a[0])),
+        7,
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.at(1) == "one");
+    assert(c.at(2) == "two");
+    assert(c.at(3) == "three");
+    assert(c.at(4) == "four");
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> P;
+    test(test_allocator<P>(10));
+    test(min_allocator<P>());
+    test(explicit_allocator<P>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash.pass.cpp
new file mode 100644
index 0000000..75ae4cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIterator>
+//     unordered_map(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..3a18bdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_allocator.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIt>
+// unordered_map(InputIt first, InputIt last, size_type n,
+//               const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_map<int, std::string,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator
+                               > C;
+    typedef std::pair<int, std::string> P;
+    P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+
+    C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a) / sizeof(a[0])),
+        7,
+        test_hash<int>(5),
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.at(1) == "one");
+    assert(c.at(2) == "two");
+    assert(c.at(3) == "three");
+    assert(c.at(4) == "four");
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> P;
+    test(test_allocator<P>(10));
+    test(min_allocator<P>());
+    test(explicit_allocator<P>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..25cfaae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_equal.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIterator>
+//     unordered_map(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..8abdd0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIterator>
+//     unordered_map(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql,
+//                   const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..e36c652
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move.addressof.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(unordered_map&& u)
+//   noexcept(
+//     is_nothrow_move_constructible<hasher>::value &&
+//     is_nothrow_move_constructible<key_equal>::value &&
+//     is_nothrow_move_constructible<allocator_type>::value);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> mo;
+  std::unordered_map<operator_hijacker, operator_hijacker> m(std::move(mo));
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move.pass.cpp
new file mode 100644
index 0000000..336cdfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(unordered_map&& u);
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+
+        assert(c0.empty());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_alloc.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_alloc.addressof.compile.pass.cpp
new file mode 100644
index 0000000..1fec0ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_alloc.addressof.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(unordered_map&& u, const allocator_type& a);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+void test() {
+  using A = test_allocator<std::pair<const operator_hijacker, operator_hijacker>>;
+  using C = std::unordered_map<operator_hijacker, operator_hijacker, std::hash<operator_hijacker>,
+                               std::equal_to<operator_hijacker>, A>;
+
+  C mo;
+  C m(std::move(mo), A());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_alloc.pass.cpp
new file mode 100644
index 0000000..89f2716
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_alloc.pass.cpp
@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(unordered_map&& u, const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(12));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(12));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(10));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef min_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(std::move(c0), A());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_map<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        C c(std::move(c0), A{});
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..9d50537
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_assign_noexcept.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// unordered_map& operator=(unordered_map&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    some_hash& operator=(const some_hash&);
+
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_noexcept.pass.cpp
new file mode 100644
index 0000000..8458627
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/move_noexcept.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// unordered_map(unordered_map&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size.compile.fail.cpp
new file mode 100644
index 0000000..371987d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size.compile.fail.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size.pass.cpp
new file mode 100644
index 0000000..7328b95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_allocator.pass.cpp
new file mode 100644
index 0000000..fcc8960
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_allocator.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc) {
+    typedef std::unordered_map<NotConstructible, NotConstructible,
+                               test_hash<NotConstructible>,
+                               test_equal_to<NotConstructible>,
+                               Allocator
+                               > C;
+
+    C c(7, alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>());
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const NotConstructible, NotConstructible> V;
+
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash.pass.cpp
new file mode 100644
index 0000000..ee0cf5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n, const hasher& hf);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..219d146
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_allocator.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n, const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc) {
+    typedef std::unordered_map<NotConstructible, NotConstructible,
+                               test_hash<NotConstructible>,
+                               test_equal_to<NotConstructible>,
+                               Allocator
+                               > C;
+
+    C c(7, test_hash<NotConstructible>(8), alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>(8));
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const NotConstructible, NotConstructible> V;
+
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_equal.pass.cpp
new file mode 100644
index 0000000..1c81b0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_equal.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n, const hasher& hf, const key_equal& eql);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..3a329c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.cnstr/size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// unordered_map(size_type n, const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            min_allocator<std::pair<const NotConstructible, NotConstructible> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible> > A;
+        typedef std::unordered_map<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            A{}
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == A{});
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/at.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/at.pass.cpp
new file mode 100644
index 0000000..fe6ef8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/at.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// mapped_type&       at(const key_type& k);
+// const mapped_type& at(const key_type& k) const;
+
+#include <cassert>
+#include <stdexcept>
+#include <string>
+#include <unordered_map>
+
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        c.at(1) = "ONE";
+        assert(c.at(1) == "ONE");
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            c.at(11) = "eleven";
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+        assert(c.size() == 4);
+#endif
+    }
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD c.at(11);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+        assert(c.size() == 4);
+#endif
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        c.at(1) = "ONE";
+        assert(c.at(1) == "ONE");
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            c.at(11) = "eleven";
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+        assert(c.size() == 4);
+#endif
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD c.at(11);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+        }
+        assert(c.size() == 4);
+#endif
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/index.pass.cpp
new file mode 100644
index 0000000..9ca0edb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/index.pass.cpp
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// mapped_type& operator[](const key_type& k);
+// mapped_type& operator[](key_type&& k);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+#include "count_new.h"
+
+#if TEST_STD_VER >= 11
+#include "container_test_types.h"
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        c[1] = "ONE";
+        assert(c.at(1) == "ONE");
+        c[11] = "eleven";
+        assert(c.size() == 5);
+        assert(c.at(11) == "eleven");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<MoveOnly, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        c[1] = "ONE";
+        assert(c.at(1) == "ONE");
+        c[11] = "eleven";
+        assert(c.size() == 5);
+        assert(c.at(11) == "eleven");
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        c[1] = "ONE";
+        assert(c.at(1) == "ONE");
+        c[11] = "eleven";
+        assert(c.size() == 5);
+        assert(c.at(11) == "eleven");
+    }
+
+    {
+        typedef std::unordered_map<MoveOnly, std::string, std::hash<MoveOnly>, std::equal_to<MoveOnly>,
+                            min_allocator<std::pair<const MoveOnly, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.size() == 4);
+        c[1] = "ONE";
+        assert(c.at(1) == "ONE");
+        c[11] = "eleven";
+        assert(c.size() == 5);
+        assert(c.at(11) == "eleven");
+    }
+    {
+        using Container = TCT::unordered_map<>;
+        using Key = Container::key_type;
+        using MappedType = Container::mapped_type;
+        ConstructController* cc = getConstructController();
+        cc->reset();
+        {
+            Container c;
+            const Key k(1);
+            cc->expect<std::piecewise_construct_t const&, std::tuple<Key const&>&&, std::tuple<>&&>();
+            MappedType& mref = c[k];
+            assert(!cc->unchecked());
+            {
+                DisableAllocationGuard g;
+                MappedType& mref2 = c[k];
+                assert(&mref == &mref2);
+            }
+        }
+        {
+            Container c;
+            Key k(1);
+            cc->expect<std::piecewise_construct_t const&, std::tuple<Key const&>&&, std::tuple<>&&>();
+            MappedType& mref = c[k];
+            assert(!cc->unchecked());
+            {
+                DisableAllocationGuard g;
+                MappedType& mref2 = c[k];
+                assert(&mref == &mref2);
+            }
+        }
+        {
+            Container c;
+            Key k(1);
+            cc->expect<std::piecewise_construct_t const&, std::tuple<Key &&>&&, std::tuple<>&&>();
+            MappedType& mref = c[std::move(k)];
+            assert(!cc->unchecked());
+            {
+                Key k2(1);
+                DisableAllocationGuard g;
+                MappedType& mref2 = c[std::move(k2)];
+                assert(&mref == &mref2);
+            }
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/index_tuple.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/index_tuple.pass.cpp
new file mode 100644
index 0000000..78b5fbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.elem/index_tuple.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// mapped_type& operator[](const key_type& k);
+
+// https://llvm.org/PR16542
+
+#include <cstddef>
+#include <tuple>
+#include <unordered_map>
+
+struct my_hash {
+    std::size_t operator()(const std::tuple<int, int>&) const { return 0; }
+};
+
+int main(int, char**) {
+    std::unordered_map<std::tuple<int, int>, std::size_t, my_hash> m;
+    m[std::make_tuple(2, 3)] = 7;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..64fe72e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/clear.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// void clear() noexcept;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..11bbaf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class... Args>
+//     pair<iterator, bool> emplace(Args&&... args);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, Emplaceable> C;
+        typedef std::pair<C::iterator, bool> R;
+        C c;
+        R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
+                                                  std::forward_as_tuple());
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3);
+        assert(r.first->second == Emplaceable());
+
+        r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4);
+        assert(r.first->second == Emplaceable(5, 6));
+
+        r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
+                                               std::forward_as_tuple(6, 7));
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5);
+        assert(r.first->second == Emplaceable(6, 7));
+    }
+    {
+        typedef std::unordered_map<int, Emplaceable, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, Emplaceable>>> C;
+        typedef std::pair<C::iterator, bool> R;
+        C c;
+        R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
+                                                  std::forward_as_tuple());
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3);
+        assert(r.first->second == Emplaceable());
+
+        r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4);
+        assert(r.first->second == Emplaceable(5, 6));
+
+        r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
+                                               std::forward_as_tuple(6, 7));
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5);
+        assert(r.first->second == Emplaceable(6, 7));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace_hint.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace_hint.addressof.compile.pass.cpp
new file mode 100644
index 0000000..58ddefd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace_hint.addressof.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator position, Args&&... args);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> m;
+  m.emplace_hint(m.cbegin());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace_hint.pass.cpp
new file mode 100644
index 0000000..4277a1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/emplace_hint.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator p, Args&&... args);
+
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, Emplaceable> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.emplace_hint(e, std::piecewise_construct, std::forward_as_tuple(3),
+                                                          std::forward_as_tuple());
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable());
+
+        r = c.emplace_hint(c.end(), std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
+        assert(c.size() == 2);
+        assert(r->first == 4);
+        assert(r->second == Emplaceable(5, 6));
+
+        r = c.emplace_hint(c.end(), std::piecewise_construct, std::forward_as_tuple(5),
+                                                       std::forward_as_tuple(6, 7));
+        assert(c.size() == 3);
+        assert(r->first == 5);
+        assert(r->second == Emplaceable(6, 7));
+    }
+    {
+        typedef std::unordered_map<int, Emplaceable, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, Emplaceable>>> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.emplace_hint(e, std::piecewise_construct, std::forward_as_tuple(3),
+                                                          std::forward_as_tuple());
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable());
+
+        r = c.emplace_hint(c.end(), std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
+        assert(c.size() == 2);
+        assert(r->first == 4);
+        assert(r->second == Emplaceable(5, 6));
+
+        r = c.emplace_hint(c.end(), std::piecewise_construct, std::forward_as_tuple(5),
+                                                       std::forward_as_tuple(6, 7));
+        assert(c.size() == 3);
+        assert(r->first == 5);
+        assert(r->second == Emplaceable(6, 7));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_const_iter.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_const_iter.addressof.compile.pass.cpp
new file mode 100644
index 0000000..1461f24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_const_iter.addressof.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator erase(const_iterator p)
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> m;
+  m.erase(m.cbegin());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_const_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_const_iter.pass.cpp
new file mode 100644
index 0000000..1d0b18b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_const_iter.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator erase(const_iterator p)
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator==(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+struct Hash { size_t operator() (const TemplateConstructor &) const { return 0; } };
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        c.erase(i);
+        assert(c.size() == 3);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        c.erase(i);
+        assert(c.size() == 3);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::unordered_map<T, int, Hash> C;
+        typedef C::iterator I;
+
+        C m;
+        T a{0};
+        I it = m.find(a);
+        if (it != m.end())
+            m.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_key.pass.cpp
new file mode 100644
index 0000000..305d149
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_key.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// size_type erase(const key_type& k);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+template <typename Unordered>
+bool only_deletions ( const Unordered &whole, const Unordered &part ) {
+    typename Unordered::const_iterator w = whole.begin();
+    typename Unordered::const_iterator p = part.begin();
+
+    while ( w != whole.end () && p != part.end()) {
+        if ( *w == *p )
+            p++;
+        w++;
+        }
+
+    return p == part.end();
+}
+#endif
+
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        assert(c.erase(2) == 1);
+        assert(c.size() == 3);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 3);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 2);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 2);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+
+        assert(c.erase(1) == 1);
+        assert(c.size() == 1);
+        assert(c.at(3) == "three");
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        assert(c.at(3) == "three");
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        assert(c.erase(2) == 1);
+        assert(c.size() == 3);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 3);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 2);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 2);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+
+        assert(c.erase(1) == 1);
+        assert(c.size() == 1);
+        assert(c.at(3) == "three");
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        assert(c.at(3) == "three");
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+    }
+    {
+    typedef std::unordered_map<int, int> C;
+    C m, m2;
+    for ( int i = 0; i < 10; ++i ) {
+        m[i] = i;
+        m2[i] = i;
+        }
+
+    C::iterator i = m2.begin();
+    int ctr = 0;
+    while (i != m2.end()) {
+        if (ctr++ % 2 == 0)
+            m2.erase(i++);
+        else
+            ++i;
+        }
+
+    assert (only_deletions (m, m2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_range.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_range.addressof.compile.pass.cpp
new file mode 100644
index 0000000..5f342f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_range.addressof.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator erase(const_iterator first, const_iterator last)
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> m;
+  m.erase(m.cbegin(), m.cend());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_range.pass.cpp
new file mode 100644
index 0000000..f6baeec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/erase_range.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator erase(const_iterator first, const_iterator last)
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i, 1);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        k = c.erase(i, j);
+        assert(c.size() == 3);
+        assert(k == j);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(k == c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i, 1);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        k = c.erase(i, j);
+        assert(c.size() == 3);
+        assert(k == j);
+        assert(c.at(1) == "one");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(k == c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/extract_iterator.pass.cpp
new file mode 100644
index 0000000..2ce9888
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/extract_iterator.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// node_type extract(const_iterator);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    auto some_key = c.cbegin()->first;
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = first->first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.key() == key_value);
+        t.key() = some_key;
+        assert(t.key() == some_key);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using map_type = std::unordered_map<int, int>;
+        map_type m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        test(m);
+    }
+
+    {
+        std::unordered_map<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        assert(Counter_base::gConstructed == 12);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
+                               min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/extract_key.pass.cpp
new file mode 100644
index 0000000..e1c893f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/extract_key.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// node_type extract(key_type const&);
+
+#include <iterator>
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.key() == *copy);
+        t.key() = *first; // We should be able to mutate key.
+        assert(t.key() == *first);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::unordered_map<int, int> m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::unordered_map<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 12+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
+                               min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..a28a866
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_and_emplace_allocator_requirements.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map
+
+// insert(...);
+// emplace(...);
+
+// UNSUPPORTED: c++03
+
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../../map_allocator_requirement_test_templates.h"
+
+int main(int, char**)
+{
+  testMapInsert<TCT::unordered_map<> >();
+  testMapInsertHint<TCT::unordered_map<> >();
+  testMapEmplace<TCT::unordered_map<> >();
+  testMapEmplaceHint<TCT::unordered_map<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_const_lvalue.pass.cpp
new file mode 100644
index 0000000..eb50521
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_const_lvalue.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// pair<iterator, bool> insert(const value_type& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+
+template <class Container>
+void do_insert_cv_test()
+{
+    typedef Container M;
+    typedef std::pair<typename M::iterator, bool> R;
+    typedef typename M::value_type VT;
+    M m;
+
+    const VT v1(2.5, 2);
+    R r = m.insert(v1);
+    assert(r.second);
+    assert(m.size() == 1);
+    assert(r.first->first == 2.5);
+    assert(r.first->second == 2);
+
+    const VT v2(2.5, 3);
+    r = m.insert(v2);
+    assert(!r.second);
+    assert(m.size() == 1);
+    assert(r.first->first == 2.5);
+    assert(r.first->second == 2);
+
+    const VT v3(1.5, 1);
+    r = m.insert(v3);
+    assert(r.second);
+    assert(m.size() == 2);
+    assert(r.first->first == 1.5);
+    assert(r.first->second == 1);
+
+    const VT v4(3.5, 3);
+    r = m.insert(v4);
+    assert(r.second);
+    assert(m.size() == 3);
+    assert(r.first->first == 3.5);
+    assert(r.first->second == 3);
+
+    const VT v5(3.5, 4);
+    r = m.insert(v5);
+    assert(!r.second);
+    assert(m.size() == 3);
+    assert(r.first->first == 3.5);
+    assert(r.first->second == 3);
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<double, int> M;
+        do_insert_cv_test<M>();
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> M;
+        do_insert_cv_test<M>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_const_lvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_const_lvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..db1805e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_const_lvalue.addressof.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator insert(const_iterator p, const value_type& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> m;
+  const std::pair<operator_hijacker, operator_hijacker> v;
+  m.insert(m.cend(), v);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..208d482
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_const_lvalue.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator insert(const_iterator p, const value_type& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_hint_const_lvalue_test()
+{
+    typedef Container C;
+    typedef typename C::iterator R;
+    typedef typename C::value_type VT;
+    C c;
+    typename C::const_iterator e = c.end();
+    const VT v1(3.5, 3);
+    R r = c.insert(e, v1);
+    assert(c.size() == 1);
+    assert(r->first == 3.5);
+    assert(r->second == 3);
+
+    const VT v2(3.5, 4);
+    r = c.insert(r, v2);
+    assert(c.size() == 1);
+    assert(r->first == 3.5);
+    assert(r->second == 3);
+
+    const VT v3(4.5, 4);
+    r = c.insert(c.end(), v3);
+    assert(c.size() == 2);
+    assert(r->first == 4.5);
+    assert(r->second == 4);
+
+    const VT v4(5.5, 4);
+    r = c.insert(c.end(), v4);
+    assert(c.size() == 3);
+    assert(r->first == 5.5);
+    assert(r->second == 4);
+}
+
+int main(int, char**)
+{
+    do_insert_hint_const_lvalue_test<std::unordered_map<double, int> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+
+        do_insert_hint_const_lvalue_test<C>();
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_rvalue.pass.cpp
new file mode 100644
index 0000000..44ed227
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_hint_rvalue.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     iterator insert(const_iterator p, P&& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<double, int> C;
+        typedef C::iterator R;
+        typedef std::pair<double, short> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5, static_cast<short>(3)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3.5, static_cast<short>(4)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(c.end(), P(4.5, static_cast<short>(4)));
+        assert(c.size() == 2);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5.5, static_cast<short>(4)));
+        assert(c.size() == 3);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        typedef C::iterator R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3, 3));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3, 4));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(c.end(), P(4, 4));
+        assert(c.size() == 2);
+        assert(r->first == 4);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5, 4));
+        assert(c.size() == 3);
+        assert(r->first == 5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_map<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+        typedef C::iterator R;
+        typedef std::pair<double, short> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5, static_cast<short>(3)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3.5, static_cast<short>(4)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(c.end(), P(4.5, static_cast<short>(4)));
+        assert(c.size() == 2);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5.5, static_cast<short>(4)));
+        assert(c.size() == 3);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, std::equal_to<MoveOnly>,
+                            min_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        typedef C::iterator R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3, 3));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3, 4));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(c.end(), P(4, 4));
+        assert(c.size() == 2);
+        assert(r->first == 4);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5, 4));
+        assert(c.size() == 3);
+        assert(r->first == 5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_map<double, MoveOnly> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, {3.5, 3});
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(r, {3.5, 4});
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(c.end(), {4.5, 4});
+        assert(c.size() == 2);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), {5.5, 4});
+        assert(c.size() == 3);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_init.pass.cpp
new file mode 100644
index 0000000..dcdad56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_init.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// void insert(initializer_list<value_type> il);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        C c;
+        c.insert(
+                    {
+                        P(1, "one"),
+                        P(2, "two"),
+                        P(3, "three"),
+                        P(4, "four"),
+                        P(1, "four"),
+                        P(2, "four"),
+                    }
+                );
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+    }
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        C c;
+        c.insert(
+                    {
+                        P(1, "one"),
+                        P(2, "two"),
+                        P(3, "three"),
+                        P(4, "four"),
+                        P(1, "four"),
+                        P(2, "four"),
+                    }
+                );
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_node_type.pass.cpp
new file mode 100644
index 0000000..2d15ee1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_node_type.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// insert_return_type insert(node_type&&);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto p = c.insert({key, mapped});
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        typename Container::insert_return_type irt = c.insert(std::move(node));
+        assert(node.empty());
+        assert(irt.inserted);
+        assert(irt.node.empty());
+        assert(irt.position->first == i && irt.position->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto irt = c.insert(std::move(def));
+        assert(def.empty());
+        assert(!irt.inserted);
+        assert(irt.node.empty());
+        assert(irt.position == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0, 42);
+        auto irt = c.insert(std::move(dupl));
+        assert(dupl.empty());
+        assert(!irt.inserted);
+        assert(!irt.node.empty());
+        assert(irt.position == c.find(0));
+        assert(irt.node.key() == 0 && irt.node.mapped() == 42);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c[i] == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_map<int, int> m;
+    test(m);
+    std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..821eec9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_node_type_hint.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto p = c.insert({key, mapped});
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(node.empty());
+        assert(prev + 1 == c.size());
+        assert(it->first == i);
+        assert(it->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c[i] == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_map<int, int> m;
+    test(m);
+    std::unordered_map<int, int, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_or_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_or_assign.pass.cpp
new file mode 100644
index 0000000..1b7c9e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_or_assign.pass.cpp
@@ -0,0 +1,196 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// template <class M>
+//  pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);            // C++17
+// template <class M>
+//  pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);                 // C++17
+// template <class M>
+//  iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);   // C++17
+// template <class M>
+//  iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);        // C++17
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+#include <tuple>
+
+#include "test_macros.h"
+
+
+class Moveable
+{
+    Moveable(const Moveable&);
+    Moveable& operator=(const Moveable&);
+
+    int int_;
+    double double_;
+public:
+    Moveable() : int_(0), double_(0) {}
+    Moveable(int i, double d) : int_(i), double_(d) {}
+    Moveable(Moveable&& x)
+        : int_(x.int_), double_(x.double_)
+            {x.int_ = -1; x.double_ = -1;}
+    Moveable& operator=(Moveable&& x)
+        {int_ = x.int_; x.int_ = -1;
+         double_ = x.double_; x.double_ = -1;
+         return *this;
+        }
+
+    bool operator==(const Moveable& x) const
+        {return int_ == x.int_ && double_ == x.double_;}
+    bool operator<(const Moveable& x) const
+        {return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);}
+    size_t hash () const { return std::hash<int>()(int_) + std::hash<double>()(double_); }
+
+    int get() const {return int_;}
+    bool moved() const {return int_ == -1;}
+};
+
+namespace std {
+    template <> struct hash<Moveable> {
+        size_t operator () (const Moveable &m) const { return m.hash(); }
+    };
+}
+
+int main(int, char**)
+{
+
+    { // pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj);
+        typedef std::unordered_map<int, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace ( i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+
+        for (int i=0; i < 20; i += 2)
+        {
+            Moveable mv(i+1, i+1);
+            r = m.insert_or_assign(i, std::move(mv));
+            assert(m.size() == 10);
+            assert(!r.second);                    // was not inserted
+            assert(mv.moved());                   // was moved from
+            assert(r.first->first == i);          // key
+            assert(r.first->second.get() == i+1); // value
+        }
+
+        Moveable mv1(5, 5.0);
+        r = m.insert_or_assign(-1, std::move(mv1));
+        assert(m.size() == 11);
+        assert(r.second);                    // was inserted
+        assert(mv1.moved());                 // was moved from
+        assert(r.first->first        == -1); // key
+        assert(r.first->second.get() == 5);  // value
+
+        Moveable mv2(9, 9.0);
+        r = m.insert_or_assign(3, std::move(mv2));
+        assert(m.size() == 12);
+        assert(r.second);                   // was inserted
+        assert(mv2.moved());                // was moved from
+        assert(r.first->first        == 3); // key
+        assert(r.first->second.get() == 9); // value
+
+        Moveable mv3(-1, 5.0);
+        r = m.insert_or_assign(117, std::move(mv3));
+        assert(m.size() == 13);
+        assert(r.second);                     // was inserted
+        assert(mv3.moved());                  // was moved from
+        assert(r.first->first        == 117); // key
+        assert(r.first->second.get() == -1);  // value
+    }
+    { // pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj);
+        typedef std::unordered_map<Moveable, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.insert_or_assign(std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(!r.second);                  // was not inserted
+        assert(!mvkey1.moved());            // was not moved from
+        assert(mv1.moved());                // was moved from
+        assert(r.first->first == mvkey1);   // key
+        assert(r.first->second.get() == 4); // value
+
+        Moveable mvkey2(3, 3.0);
+        Moveable mv2(5, 5.0);
+        r = m.try_emplace(std::move(mvkey2), std::move(mv2));
+        assert(m.size() == 11);
+        assert(r.second);                   // was inserted
+        assert(mv2.moved());                // was moved from
+        assert(mvkey2.moved());             // was moved from
+        assert(r.first->first.get()  == 3); // key
+        assert(r.first->second.get() == 5); // value
+    }
+    { // iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj);
+        typedef std::unordered_map<int, Moveable> M;
+        M m;
+        M::iterator r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace ( i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+        M::const_iterator it = m.find(2);
+
+        Moveable mv1(3, 3.0);
+        r = m.insert_or_assign(it, 2, std::move(mv1));
+        assert(m.size() == 10);
+        assert(mv1.moved());           // was moved from
+        assert(r->first        == 2);  // key
+        assert(r->second.get() == 3);  // value
+
+        Moveable mv2(5, 5.0);
+        r = m.insert_or_assign(it, 3, std::move(mv2));
+        assert(m.size() == 11);
+        assert(mv2.moved());           // was moved from
+        assert(r->first        == 3);  // key
+        assert(r->second.get() == 5);  // value
+    }
+    { // iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj);
+        typedef std::unordered_map<Moveable, Moveable> M;
+        M m;
+        M::iterator r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+        M::const_iterator it = std::next(m.cbegin());
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.insert_or_assign(it, std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(mv1.moved());          // was moved from
+        assert(!mvkey1.moved());      // was not moved from
+        assert(r->first == mvkey1);   // key
+        assert(r->second.get() == 4); // value
+
+        Moveable mvkey2(3, 3.0);
+        Moveable mv2(5, 5.0);
+        r = m.insert_or_assign(it, std::move(mvkey2), std::move(mv2));
+        assert(m.size() == 11);
+        assert(mv2.moved());           // was moved from
+        assert(mvkey2.moved());        // was moved from
+        assert(r->first.get()  == 3);  // key
+        assert(r->second.get() == 5);  // value
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_range.pass.cpp
new file mode 100644
index 0000000..342ff58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_range.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class InputIterator>
+//     void insert(InputIterator first, InputIterator last);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 4);
+        assert(c.at(1) == "one");
+        assert(c.at(2) == "two");
+        assert(c.at(3) == "three");
+        assert(c.at(4) == "four");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue.pass.cpp
new file mode 100644
index 0000000..94f0d9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     pair<iterator, bool> insert(P&& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_map<double, int> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef std::pair<double, short> P;
+        C c;
+        R r = c.insert(P(3.5, static_cast<short>(3)));
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3.5);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(3.5, static_cast<short>(4)));
+        assert(!r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3.5);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(4.5, static_cast<short>(4)));
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4.5);
+        assert(r.first->second == 4);
+
+        r = c.insert(P(5.5, static_cast<short>(4)));
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5.5);
+        assert(r.first->second == 4);
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        R r = c.insert(P(3, 3));
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(3, 4));
+        assert(!r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(4, 4));
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4);
+        assert(r.first->second == 4);
+
+        r = c.insert(P(5, 4));
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5);
+        assert(r.first->second == 4);
+    }
+    {
+        typedef std::unordered_map<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef std::pair<double, short> P;
+        C c;
+        R r = c.insert(P(3.5, static_cast<short>(3)));
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3.5);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(3.5, static_cast<short>(4)));
+        assert(!r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3.5);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(4.5, static_cast<short>(4)));
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4.5);
+        assert(r.first->second == 4);
+
+        r = c.insert(P(5.5, static_cast<short>(4)));
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5.5);
+        assert(r.first->second == 4);
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>, std::equal_to<MoveOnly>,
+                            min_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        R r = c.insert(P(3, 3));
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(3, 4));
+        assert(!r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3);
+        assert(r.first->second == 3);
+
+        r = c.insert(P(4, 4));
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4);
+        assert(r.first->second == 4);
+
+        r = c.insert(P(5, 4));
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5);
+        assert(r.first->second == 4);
+    }
+    {
+        typedef std::unordered_map<double, MoveOnly> C;
+        typedef std::pair<C::iterator, bool> R;
+        C c;
+        R r = c.insert({3.5, 3});
+        assert(r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3.5);
+        assert(r.first->second == 3);
+
+        r = c.insert({3.5, 4});
+        assert(!r.second);
+        assert(c.size() == 1);
+        assert(r.first->first == 3.5);
+        assert(r.first->second == 3);
+
+        r = c.insert({4.5, 4});
+        assert(r.second);
+        assert(c.size() == 2);
+        assert(r.first->first == 4.5);
+        assert(r.first->second == 4);
+
+        r = c.insert({5.5, 4});
+        assert(r.second);
+        assert(c.size() == 3);
+        assert(r.first->first == 5.5);
+        assert(r.first->second == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue_constructible_value_type.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue_constructible_value_type.addressof.compile.pass.cpp
new file mode 100644
index 0000000..530b826
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue_constructible_value_type.addressof.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     pair<iterator, bool> insert(P&& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test(std::unordered_map<operator_hijacker, operator_hijacker>& m) { m.insert(m.cend(), *m.begin()); }
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue_value_type.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue_value_type.addressof.compile.pass.cpp
new file mode 100644
index 0000000..80219cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/insert_rvalue_value_type.addressof.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// iterator insert(const_iterator hint, value_type&& obj);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test(std::unordered_map<operator_hijacker, operator_hijacker>& m) {
+  m.insert(m.cend(), std::pair<operator_hijacker, operator_hijacker>{});
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp
new file mode 100644
index 0000000..9953dc8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// template <class H2, class P2>
+//   void merge(unordered_map<key_type, value_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_map<key_type, value_type, H2, P2, allocator_type>&& source);
+// template <class H2, class P2>
+//   void merge(unordered_multimap<key_type, value_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_multimap<key_type, value_type, H2, P2, allocator_type>&& source);
+
+#include <unordered_map>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Map>
+bool map_equal(const Map& map, Map other)
+{
+    return map == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <class T>
+struct throw_hasher
+{
+    bool& should_throw_;
+
+    throw_hasher(bool& should_throw) : should_throw_(should_throw) {}
+
+    size_t operator()(const T& p) const
+    {
+        if (should_throw_)
+            throw 0;
+        return std::hash<T>()(p);
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::unordered_map<int, int> src{{1, 0}, {3, 0}, {5, 0}};
+        std::unordered_map<int, int> dst{{2, 0}, {4, 0}, {5, 0}};
+        dst.merge(src);
+        assert(map_equal(src, {{5,0}}));
+        assert(map_equal(dst, {{1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::unordered_map<Counter<int>, int, throw_hasher<Counter<int>>> map_type;
+        map_type src({{1, 0}, {3, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw));
+        map_type dst({{2, 0}, {4, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(map_equal(src, map_type({{1, 0}, {3, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw))));
+        assert(map_equal(dst, map_type({{2, 0}, {4, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct equal
+    {
+        equal() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs == rhs;
+        }
+    };
+    struct hasher
+    {
+        hasher() = default;
+        size_t operator()(const Counter<int>& p) const
+        {
+            return std::hash<Counter<int>>()(p);
+        }
+    };
+    {
+        typedef std::unordered_map<Counter<int>, int, std::hash<Counter<int>>, std::equal_to<Counter<int>>> first_map_type;
+        typedef std::unordered_map<Counter<int>, int, hasher, equal> second_map_type;
+        typedef std::unordered_multimap<Counter<int>, int, hasher, equal> third_map_type;
+
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(map_equal(first, {{1, 0}, {2, 0}, {3, 0}, {4, 0}}));
+            assert(map_equal(second, {{2, 0}, {3, 0}}));
+            assert(map_equal(third, {{1, 0}, {3, 0}}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(map_equal(first, {{1, 0}, {2, 0}, {3, 0}, {4, 0}}));
+            assert(map_equal(second, {{2, 0}, {3, 0}}));
+            assert(map_equal(third, {{1, 0}, {3, 0}}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        std::unordered_map<int, int> first;
+        {
+            std::unordered_map<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::unordered_multimap<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/try.emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/try.emplace.pass.cpp
new file mode 100644
index 0000000..bf2c317
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/try.emplace.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_map
+
+// template <class... Args>
+//  pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);          // C++17
+// template <class... Args>
+//  pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);               // C++17
+// template <class... Args>
+//  iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args); // C++17
+// template <class... Args>
+//  iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);      // C++17
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+#include <tuple>
+
+#include "test_macros.h"
+
+class Moveable
+{
+    Moveable(const Moveable&);
+    Moveable& operator=(const Moveable&);
+
+    int int_;
+    double double_;
+public:
+    Moveable() : int_(0), double_(0) {}
+    Moveable(int i, double d) : int_(i), double_(d) {}
+    Moveable(Moveable&& x)
+        : int_(x.int_), double_(x.double_)
+            {x.int_ = -1; x.double_ = -1;}
+    Moveable& operator=(Moveable&& x)
+        {int_ = x.int_; x.int_ = -1;
+         double_ = x.double_; x.double_ = -1;
+         return *this;
+        }
+
+    bool operator==(const Moveable& x) const
+        {return int_ == x.int_ && double_ == x.double_;}
+    bool operator<(const Moveable& x) const
+        {return int_ < x.int_ || (int_ == x.int_ && double_ < x.double_);}
+    size_t hash () const { return std::hash<int>()(int_) + std::hash<double>()(double_); }
+
+    int get() const {return int_;}
+    bool moved() const {return int_ == -1;}
+};
+
+namespace std {
+    template <> struct hash<Moveable> {
+        size_t operator () (const Moveable &m) const { return m.hash(); }
+    };
+}
+
+int main(int, char**)
+{
+
+    { // pair<iterator, bool> try_emplace(const key_type& k, Args&&... args);
+        typedef std::unordered_map<int, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace (i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+
+        Moveable mv1(3, 3.0);
+        for (int i=0; i < 20; i += 2)
+        {
+            r = m.try_emplace(i, std::move(mv1));
+            assert(m.size() == 10);
+            assert(!r.second);              // was not inserted
+            assert(!mv1.moved());           // was not moved from
+            assert(r.first->first == i);    // key
+        }
+
+        r = m.try_emplace(-1, std::move(mv1));
+        assert(m.size() == 11);
+        assert(r.second);                   // was inserted
+        assert(mv1.moved());                // was moved from
+        assert(r.first->first == -1);       // key
+        assert(r.first->second.get() == 3); // value
+
+        Moveable mv2(5, 3.0);
+        r = m.try_emplace(5, std::move(mv2));
+        assert(m.size() == 12);
+        assert(r.second);                   // was inserted
+        assert(mv2.moved());                // was moved from
+        assert(r.first->first == 5);        // key
+        assert(r.first->second.get() == 5); // value
+
+        Moveable mv3(-1, 3.0);
+        r = m.try_emplace(117, std::move(mv2));
+        assert(m.size() == 13);
+        assert(r.second);                    // was inserted
+        assert(mv2.moved());                 // was moved from
+        assert(r.first->first == 117);       // key
+        assert(r.first->second.get() == -1); // value
+    }
+
+    {  // pair<iterator, bool> try_emplace(key_type&& k, Args&&... args);
+        typedef std::unordered_map<Moveable, Moveable> M;
+        typedef std::pair<M::iterator, bool> R;
+        M m;
+        R r;
+        for (int i = 0; i < 20; i += 2)
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.try_emplace(std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(!r.second);                 // was not inserted
+        assert(!mv1.moved());              // was not moved from
+        assert(!mvkey1.moved());           // was not moved from
+        assert(r.first->first == mvkey1);  // key
+
+        Moveable mvkey2(3, 3.0);
+        r = m.try_emplace(std::move(mvkey2), std::move(mv1));
+        assert(m.size() == 11);
+        assert(r.second);                   // was inserted
+        assert(mv1.moved());                // was moved from
+        assert(mvkey2.moved());             // was moved from
+        assert(r.first->first.get()  == 3); // key
+        assert(r.first->second.get() == 4); // value
+    }
+
+    {  // iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args);
+        typedef std::unordered_map<int, Moveable> M;
+        M m;
+        M::iterator r;
+        for (int i = 0; i < 20; i += 2)
+            m.try_emplace ( i, Moveable(i, (double) i));
+        assert(m.size() == 10);
+        M::const_iterator it = m.find(2);
+
+        Moveable mv1(3, 3.0);
+        for (int i=0; i < 20; i += 2)
+        {
+            r = m.try_emplace(it, i, std::move(mv1));
+            assert(m.size() == 10);
+            assert(!mv1.moved());         // was not moved from
+            assert(r->first == i);        // key
+            assert(r->second.get() == i); // value
+        }
+
+        r = m.try_emplace(it, 3, std::move(mv1));
+        assert(m.size() == 11);
+        assert(mv1.moved());          // was moved from
+        assert(r->first == 3);        // key
+        assert(r->second.get() == 3); // value
+    }
+
+    {  // iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);
+        typedef std::unordered_map<Moveable, Moveable> M;
+        M m;
+        M::iterator r;
+        for ( int i = 0; i < 20; i += 2 )
+            m.emplace ( Moveable(i, (double) i), Moveable(i+1, (double) i+1));
+        assert(m.size() == 10);
+        M::const_iterator it = std::next(m.cbegin());
+
+        Moveable mvkey1(2, 2.0);
+        Moveable mv1(4, 4.0);
+        r = m.try_emplace(it, std::move(mvkey1), std::move(mv1));
+        assert(m.size() == 10);
+        assert(!mv1.moved());        // was not moved from
+        assert(!mvkey1.moved());     // was not moved from
+        assert(r->first == mvkey1);  // key
+
+        Moveable mvkey2(3, 3.0);
+        r = m.try_emplace(it, std::move(mvkey2), std::move(mv1));
+        assert(m.size() == 11);
+        assert(mv1.moved());          // was moved from
+        assert(mvkey2.moved());       // was moved from
+        assert(r->first.get()  == 3); // key
+        assert(r->second.get() == 4); // value
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/try_emplace_hint.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/try_emplace_hint.addressof.compile.pass.cpp
new file mode 100644
index 0000000..2c66737
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/try_emplace_hint.addressof.compile.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// template <class... Args>
+//     iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args);
+// template <class... Args>
+//     iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args);
+// template <class M>
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> m;
+  {
+    const operator_hijacker k;
+    m.try_emplace(m.cend(), k);
+  }
+  {
+    operator_hijacker k;
+    m.try_emplace(m.cend(), std::move(k));
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap.addressof.compile.pass.cpp
new file mode 100644
index 0000000..f5b5f51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap.addressof.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// void swap(unordered_map& c)
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//               noexcept(swap(declval<Hash&>(), declval<Hash&>())) &&
+//               noexcept(swap(declval<Pred&>(), declval<Pred&>())));
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_map<operator_hijacker, operator_hijacker> m1;
+  std::unordered_map<operator_hijacker, operator_hijacker> m2;
+  std::swap(m1, m2);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..44f8cf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap_noexcept.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// void swap(unordered_map& c)
+//      noexcept(
+//          (!allocator_type::propagate_on_container_swap::value ||
+//           __is_nothrow_swappable<allocator_type>::value) &&
+//           __is_nothrow_swappable<hasher>::value &&
+//           __is_nothrow_swappable<key_equal>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//               noexcept(swap(declval<Hash&>(), declval<Hash&>())) &&
+//               noexcept(swap(declval<Pred&>(), declval<Pred&>())));
+
+// This tests a conforming extension
+
+#include <unordered_map>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash() {}
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+template <class T>
+struct some_hash2
+{
+    typedef T value_type;
+    some_hash2() {}
+    some_hash2(const some_hash2&);
+    std::size_t operator()(T const&) const;
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_hash2<T>&, some_hash2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> MapType;
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MapType>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MapType>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_map<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc <MapType>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc2<MapType>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc <MapType>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<MapType>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc <MapType>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc2<MapType>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc <MapType>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<MapType>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_map<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc3<MapType>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap_non_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap_non_member.pass.cpp
new file mode 100644
index 0000000..2b83a74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.map/unord.map.swap/swap_non_member.pass.cpp
@@ -0,0 +1,580 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_map
+
+// void swap(unordered_map& __u);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cstddef>
+
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_map<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.at(10) == "ten");
+        assert(c1.at(20) == "twenty");
+        assert(c1.at(30) == "thirty");
+        assert(c1.at(40) == "forty");
+        assert(c1.at(50) == "fifty");
+        assert(c1.at(60) == "sixty");
+        assert(c1.at(70) == "seventy");
+        assert(c1.at(80) == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.at(1) == "one");
+        assert(c2.at(2) == "two");
+        assert(c2.at(3) == "three");
+        assert(c2.at(4) == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..ba24ca3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+//   The container's value type must be the same as the allocator's value type
+
+#include <unordered_map>
+
+int main(int, char**)
+{
+    std::unordered_multimap<int, int, std::hash<int>, std::less<int>, std::allocator<long> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket.pass.cpp
new file mode 100644
index 0000000..80c97dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type bucket(const key_type& __k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 7);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 7);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket_count.pass.cpp
new file mode 100644
index 0000000..3515dbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket_count.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type bucket_count() const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket_size.pass.cpp
new file mode 100644
index 0000000..1659fef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/bucket_size.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type bucket_size(size_type n) const
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 7);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 2);
+        LIBCPP_ASSERT(c.bucket_size(2) == 2);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+        LIBCPP_ASSERT(c.bucket_size(5) == 0);
+        LIBCPP_ASSERT(c.bucket_size(6) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 7);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 2);
+        LIBCPP_ASSERT(c.bucket_size(2) == 2);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+        LIBCPP_ASSERT(c.bucket_size(5) == 0);
+        LIBCPP_ASSERT(c.bucket_size(6) == 0);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/contains.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/contains.transparent.pass.cpp
new file mode 100644
index 0000000..9ebf4f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/contains.transparent.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <typename K>
+// bool contains(const K& x) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<>>;
+      test_transparent_contains<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_contains<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash_final, transparent_equal_final>;
+      test_transparent_contains<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_contains<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_contains<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_contains<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_contains<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_contains<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/count.pass.cpp
new file mode 100644
index 0000000..4ece256
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/count.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type count(const key_type& k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fiftyA"),
+            P(50, "fiftyB"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(50) == 3);
+        assert(c.count(5) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fiftyA"),
+            P(50, "fiftyB"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(50) == 3);
+        assert(c.count(5) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/count.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/count.transparent.pass.cpp
new file mode 100644
index 0000000..b9755cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/count.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <typename K>
+// size_type count(const K& k) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<>>;
+      test_transparent_count<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_count<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash_final, transparent_equal_final>;
+      test_transparent_count<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_count<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_count<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_count<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_count<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_count<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/empty.pass.cpp
new file mode 100644
index 0000000..6189b7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// bool empty() const noexcept;
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_multimap<int, double> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_multimap<int, double, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1, 1.5));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/empty.verify.cpp
new file mode 100644
index 0000000..aead051
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::unordered_multimap<int, int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/eq.pass.cpp
new file mode 100644
index 0000000..d0e578e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/eq.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash, class Pred, class Alloc>
+// bool
+// operator==(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
+//            const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);
+//
+// template <class Key, class T, class Hash, class Pred, class Alloc>
+// bool
+// operator!=(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
+//            const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(testEquality(c1, c2, false));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert(testEquality(c1, c2, true));
+        c2.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, false));
+        c1.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        assert(testEquality(c1, c2, true));
+        c1.insert(P(70, "seventy 2"));
+        c2.insert(P(80, "eighty 2"));
+        assert(testEquality(c1, c2, false));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(testEquality(c1, c2, false));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert(testEquality(c1, c2, true));
+        c2.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, false));
+        c1.insert(P(90, "ninety"));
+        assert(testEquality(c1, c2, true));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(20, "twenty 2"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fifty 2"),
+            P(50, "fifty 3"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        assert(testEquality(c1, c2, true));
+        c1.insert(P(70, "seventy 2"));
+        c2.insert(P(80, "eighty 2"));
+        assert(testEquality(c1, c2, false));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range.transparent.pass.cpp
new file mode 100644
index 0000000..85248e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <typename K>
+// pair<iterator, iterator> equal_range(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<>>;
+      test_transparent_equal_range<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_equal_range<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash_final, transparent_equal_final>;
+      test_transparent_equal_range<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_equal_range<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_equal_range<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_equal_range<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_equal_range<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_equal_range<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range_const.pass.cpp
new file mode 100644
index 0000000..c827ae5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range_const.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef C::const_iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fiftyA"),
+            P(50, "fiftyB"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        std::set<std::string> s;
+        s.insert("fifty");
+        s.insert("fiftyA");
+        s.insert("fiftyB");
+        for ( int i = 0; i < 3; ++i )
+        {
+            assert(r.first->first == 50);
+            assert(s.find(r.first->second) != s.end());
+            s.erase(s.find(r.first->second));
+            ++r.first;
+        }
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef C::const_iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fiftyA"),
+            P(50, "fiftyB"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        std::set<std::string> s;
+        s.insert("fifty");
+        s.insert("fiftyA");
+        s.insert("fiftyB");
+        for ( int i = 0; i < 3; ++i )
+        {
+            assert(r.first->first == 50);
+            assert(s.find(r.first->second) != s.end());
+            s.erase(s.find(r.first->second));
+            ++r.first;
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range_non_const.pass.cpp
new file mode 100644
index 0000000..6cfa586
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/equal_range_non_const.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// pair<iterator, iterator> equal_range(const key_type& k);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef C::iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fiftyA"),
+            P(50, "fiftyB"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        std::set<std::string> s;
+        s.insert("fifty");
+        s.insert("fiftyA");
+        s.insert("fiftyB");
+        for ( int i = 0; i < 3; ++i )
+        {
+            assert(r.first->first == 50);
+            assert(s.find(r.first->second) != s.end());
+            s.erase(s.find(r.first->second));
+            ++r.first;
+        }
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef C::iterator I;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(50, "fiftyA"),
+            P(50, "fiftyB"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(r.first->first == 30);
+        assert(r.first->second == "thirty");
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        std::set<std::string> s;
+        s.insert("fifty");
+        s.insert("fiftyA");
+        s.insert("fiftyB");
+        for ( int i = 0; i < 3; ++i )
+        {
+            assert(r.first->first == 50);
+            assert(s.find(r.first->second) != s.end());
+            s.erase(s.find(r.first->second));
+            ++r.first;
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/erase_if.pass.cpp
new file mode 100644
index 0000000..2da3b17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/erase_if.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash, class Pred, class Allocator, class Predicate>
+//   typename unordered_multimap<Key, T, Hash, Pred, Allocator>::size_type
+//   erase_if(unordered_multimap<Key, T, Hash, Pred, Allocator>& c, Predicate pred);
+
+#include <unordered_map>
+#include <algorithm>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+using Init = std::initializer_list<int>;
+template <typename M>
+M make (Init vals)
+{
+    M ret;
+    for (int v : vals)
+        ret.emplace(static_cast<typename M::key_type>(v), static_cast<typename M::mapped_type>(v + 10));
+    return ret;
+}
+
+template <typename M, typename Pred>
+void test0(Init vals, Pred p, Init expected, size_t expected_erased_count) {
+  M s = make<M>(vals);
+  ASSERT_SAME_TYPE(typename M::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  M e = make<M>(expected);
+  assert((std::is_permutation(s.begin(), s.end(), e.begin(), e.end())));
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v.first == 1;};
+    auto is2 = [](auto v) { return v.first == 2;};
+    auto is3 = [](auto v) { return v.first == 3;};
+    auto is4 = [](auto v) { return v.first == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0<S>({}, is1, {}, 0);
+
+    test0<S>({1}, is1, {}, 1);
+    test0<S>({1}, is2, {1}, 0);
+
+    test0<S>({1, 2}, is1, {2}, 1);
+    test0<S>({1, 2}, is2, {1}, 1);
+    test0<S>({1, 2}, is3, {1, 2}, 0);
+    test0<S>({1, 1}, is1, {}, 2);
+    test0<S>({1, 1}, is3, {1, 1}, 0);
+
+    test0<S>({1, 2, 3}, is1, {2, 3}, 1);
+    test0<S>({1, 2, 3}, is2, {1, 3}, 1);
+    test0<S>({1, 2, 3}, is3, {1, 2}, 1);
+    test0<S>({1, 2, 3}, is4, {1, 2, 3}, 0);
+
+    test0<S>({1, 1, 1}, is1, {}, 3);
+    test0<S>({1, 1, 1}, is2, {1, 1, 1}, 0);
+    test0<S>({1, 1, 2}, is1, {2}, 2);
+    test0<S>({1, 1, 2}, is2, {1, 1}, 1);
+    test0<S>({1, 1, 2}, is3, {1, 1, 2}, 0);
+    test0<S>({1, 2, 2}, is1, {2, 2}, 1);
+    test0<S>({1, 2, 2}, is2, {1}, 2);
+    test0<S>({1, 2, 2}, is3, {1, 2, 2}, 0);
+
+    test0<S>({1, 2, 3}, True, {}, 3);
+    test0<S>({1, 2, 3}, False, {1, 2, 3}, 0);
+}
+
+int main(int, char**)
+{
+    test<std::unordered_multimap<int, int>>();
+    test<std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, int>>>> ();
+    test<std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, test_allocator<std::pair<const int, int>>>> ();
+
+    test<std::unordered_multimap<long, short>>();
+    test<std::unordered_multimap<short, double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find.transparent.pass.cpp
new file mode 100644
index 0000000..4a32248
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <typename K>
+// iterator find(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_map>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<>>;
+      test_transparent_find<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_find<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash_final, transparent_equal_final>;
+      test_transparent_find<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_transparent_find<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_find<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_find<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using M = unord_map_type<std::unordered_multimap, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_find<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using M = unord_map_type<std::unordered_multimap, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<M>({{1, 2}, {1, 3}, {2, 3}});
+      test_non_transparent_find<const M>({{1, 2}, {1, 3}, {2, 3}});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find_const.pass.cpp
new file mode 100644
index 0000000..d9ccd86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find_const.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// const_iterator find(const key_type& k) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find_non_const.pass.cpp
new file mode 100644
index 0000000..5f9b60f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/find_non_const.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator find(const key_type& k);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(i->first == 30);
+        assert(i->second == "thirty");
+        i = c.find(5);
+        assert(i == c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/get_allocator.pass.cpp
new file mode 100644
index 0000000..2cca558
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/get_allocator.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// allocator_type get_allocator() const
+
+#include <unordered_map>
+#include <cassert>
+#include <string>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::pair<const int, std::string> ValueType;
+    {
+        std::allocator<ValueType> alloc;
+        const std::unordered_multimap<int, std::string> m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+    {
+        other_allocator<ValueType> alloc(1);
+        const std::unordered_multimap<int, std::string, std::hash<int>,
+                                      std::equal_to<int>,
+                                      other_allocator<ValueType> > m(alloc);
+        assert(m.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/incomplete.pass.cpp
new file mode 100644
index 0000000..5d76e6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/incomplete.pass.cpp
@@ -0,0 +1,40 @@
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// Check that std::unordered_multimap and its iterators can be instantiated with an incomplete
+// type.
+
+#include <unordered_map>
+
+#include "test_macros.h"
+
+template <class Tp>
+struct MyHash {
+  MyHash() {}
+  std::size_t operator()(Tp const&) const {return 42;}
+};
+
+struct A {
+    typedef std::unordered_multimap<A, A, MyHash<A> > Map;
+    Map m;
+    Map::iterator it;
+    Map::const_iterator cit;
+    Map::local_iterator lit;
+    Map::const_local_iterator clit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..5b1b25a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, local_iterator, const_local_iterator
+
+#include <unordered_map>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+using iterator = std::unordered_multimap<int, int>::iterator;
+using const_iterator = std::unordered_multimap<int, int>::const_iterator;
+using local_iterator = std::unordered_multimap<int, int>::local_iterator;
+using const_local_iterator = std::unordered_multimap<int, int>::const_local_iterator;
+using value_type = std::pair<const int, int>;
+
+static_assert(std::forward_iterator<iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(std::indirectly_movable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::forward_iterator<const_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(std::indirectly_movable<const_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<const_iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<const_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
+
+static_assert(std::forward_iterator<local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<local_iterator>);
+static_assert(!std::indirectly_writable<local_iterator, value_type>);
+static_assert(std::sentinel_for<local_iterator, local_iterator>);
+static_assert(std::sentinel_for<local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<local_iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<local_iterator, local_iterator>);
+
+static_assert(std::forward_iterator<const_local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_local_iterator>);
+static_assert(!std::indirectly_writable<const_local_iterator, value_type>);
+static_assert(std::sentinel_for<const_local_iterator, local_iterator>);
+static_assert(std::sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<const_local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_movable_storable<const_local_iterator, std::pair<int, int>*>);
+static_assert(std::indirectly_copyable<const_local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_copyable_storable<const_local_iterator, std::pair<int, int>*>);
+static_assert(!std::indirectly_swappable<const_local_iterator, const_local_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterators.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterators.compile.fail.cpp
new file mode 100644
index 0000000..0c1b50f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterators.compile.fail.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator       begin()        {return __table_.begin();}
+// iterator       end()          {return __table_.end();}
+// const_iterator begin()  const {return __table_.begin();}
+// const_iterator end()    const {return __table_.end();}
+// const_iterator cbegin() const {return __table_.begin();}
+// const_iterator cend()   const {return __table_.end();}
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        C::iterator i = c.begin();
+        i->second = "ONE";
+        assert(i->second == "ONE");
+        i->first = 2;
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterators.pass.cpp
new file mode 100644
index 0000000..5fd52be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/iterators.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator       begin()        {return __table_.begin();}
+// iterator       end()          {return __table_.end();}
+// const_iterator begin()  const {return __table_.begin();}
+// const_iterator end()    const {return __table_.end();}
+// const_iterator cbegin() const {return __table_.begin();}
+// const_iterator cend()   const {return __table_.end();}
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+        i = c.begin();
+        i->second = "ONE";
+        assert(i->second == "ONE");
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+        i = c.begin();
+        i->second = "ONE";
+        assert(i->second == "ONE");
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::unordered_multimap<int,double> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/load_factor.pass.cpp
new file mode 100644
index 0000000..81284ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/load_factor.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// float load_factor() const
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/local_iterators.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/local_iterators.compile.fail.cpp
new file mode 100644
index 0000000..f5af791
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/local_iterators.compile.fail.cpp
@@ -0,0 +1,289 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+        i->first = 2;
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 1);
+        assert(i->second == "one");
+        ++i;
+        assert(i->first == 1);
+        assert(i->second == "four");
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(i->first == 2);
+        assert(i->second == "two");
+        ++i;
+        assert(i->first == 2);
+        assert(i->second == "four");
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/local_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/local_iterators.pass.cpp
new file mode 100644
index 0000000..12b11aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/local_iterators.pass.cpp
@@ -0,0 +1,664 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 1);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            for ( int n = 0; n < 2; ++n )
+            {
+                assert(i->first == 2);
+                assert(s.find(i->second) != s.end());
+                s.erase(s.find(i->second));
+                ++i;
+            }
+        }
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 3);
+        assert(i->second == "three");
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(i->first == 4);
+        assert(i->second == "four");
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_bucket_count.pass.cpp
new file mode 100644
index 0000000..1dac902
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_bucket_count.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type max_bucket_count() const;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_load_factor.pass.cpp
new file mode 100644
index 0000000..ab08808
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_load_factor.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_size.pass.cpp
new file mode 100644
index 0000000..d03cf67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/max_size.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <type_traits>
+#include <unordered_map>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  typedef std::pair<const int, int> KV;
+  {
+    typedef limited_allocator<KV, 10> A;
+    typedef std::unordered_multimap<int, int, std::hash<int>,
+                                    std::equal_to<int>, A>
+        C;
+    C c;
+    assert(c.max_size() <= 10);
+    LIBCPP_ASSERT(c.max_size() == 10);
+  }
+  {
+    typedef limited_allocator<KV, (size_t)-1> A;
+    typedef std::unordered_multimap<int, int, std::hash<int>,
+                                    std::equal_to<int>, A>
+        C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+    C c;
+    assert(c.max_size() <= max_dist);
+    LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::unordered_multimap<char, int> C;
+    const C::size_type max_dist =
+        static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..31c7df7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// unordered_multimap
+
+#include <unordered_map>
+
+#include <concepts>
+#include <ranges>
+
+#include "test_macros.h"
+
+using range = std::unordered_multimap<int, int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::forward_range<range>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::forward_range<range const>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/rehash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/rehash.pass.cpp
new file mode 100644
index 0000000..99538e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/rehash.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// void rehash(size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void rehash_postcondition(const C& c, size_t n)
+{
+    assert(c.bucket_count() >= c.size() / c.max_load_factor() && c.bucket_count() >= n);
+}
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 6);
+    typedef std::pair<typename C::const_iterator, typename C::const_iterator> Eq;
+    Eq eq = c.equal_range(1);
+    assert(std::distance(eq.first, eq.second) == 2);
+    typename C::const_iterator i = eq.first;
+    {
+        std::set<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        for ( int n = 0; n < 2; ++n )
+        {
+            assert(i->first == 1);
+            assert(s.find(i->second) != s.end());
+            s.erase(s.find(i->second));
+            ++i;
+        }
+    }
+    eq = c.equal_range(2);
+    assert(std::distance(eq.first, eq.second) == 2);
+    i = eq.first;
+    {
+        std::set<std::string> s;
+        s.insert("two");
+        s.insert("four");
+        for ( int n = 0; n < 2; ++n )
+        {
+            assert(i->first == 2);
+            assert(s.find(i->second) != s.end());
+            s.erase(s.find(i->second));
+            ++i;
+        }
+    }
+    eq = c.equal_range(3);
+    assert(std::distance(eq.first, eq.second) == 1);
+    i = eq.first;
+    assert(i->first == 3);
+    assert(i->second == "three");
+    eq = c.equal_range(4);
+    assert(std::distance(eq.first, eq.second) == 1);
+    i = eq.first;
+    assert(i->first == 4);
+    assert(i->second == "four");
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/reserve.pass.cpp
new file mode 100644
index 0000000..2d3d8f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/reserve.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// void reserve(size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 6);
+    {
+        std::set<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        assert(s.find(c.find(1)->second) != s.end());
+        s.erase(s.find(c.find(1)->second));
+        assert(s.find(std::next(c.find(1))->second) != s.end());
+    }
+    {
+        std::set<std::string> s;
+        s.insert("two");
+        s.insert("four");
+        assert(s.find(c.find(2)->second) != s.end());
+        s.erase(s.find(c.find(2)->second));
+        assert(s.find(std::next(c.find(2))->second) != s.end());
+    }
+    assert(c.find(3)->second == "three");
+    assert(c.find(4)->second == "four");
+}
+
+void reserve_invariant(size_t n) // LWG #2156
+{
+    for (size_t i = 0; i < n; ++i)
+    {
+        std::unordered_multimap<size_t, size_t> c;
+        c.reserve(n);
+        size_t buckets = c.bucket_count();
+        for (size_t j = 0; j < i; ++j)
+        {
+            c.insert(std::unordered_multimap<size_t, size_t>::value_type(i,i));
+            assert(buckets == c.bucket_count());
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#endif
+    reserve_invariant(20);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/scary.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/scary.pass.cpp
new file mode 100644
index 0000000..b306da2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/scary.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_map class unordered_multimap
+
+// Extension:  SCARY/N2913 iterator compatibility between unordered_map and unordered_multimap
+
+#include <unordered_map>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::unordered_map<int, int> M1;
+    typedef std::unordered_multimap<int, int> M2;
+    M2::iterator i;
+    M1::iterator j = i;
+    ((void)j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/size.pass.cpp
new file mode 100644
index 0000000..493b8d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/size.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// size_type size() const noexcept;
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_multimap<int, double> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_multimap<int, double, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, double>>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2, 1.5));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1, 1.5));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3, 1.5));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/swap_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/swap_member.pass.cpp
new file mode 100644
index 0000000..257938b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/swap_member.pass.cpp
@@ -0,0 +1,659 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// void swap(unordered_multimap& __u);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../test_compare.h"
+#include "../../test_hash.h"
+#include "test_allocator.h"
+
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            assert(s.find(c2.find(1)->second) != s.end());
+            s.erase(s.find(c2.find(1)->second));
+            assert(s.find(std::next(c2.find(1))->second) != s.end());
+        }
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            assert(s.find(c2.find(2)->second) != s.end());
+            s.erase(s.find(c2.find(2)->second));
+            assert(s.find(std::next(c2.find(2))->second) != s.end());
+        }
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            assert(s.find(c2.find(1)->second) != s.end());
+            s.erase(s.find(c2.find(1)->second));
+            assert(s.find(std::next(c2.find(1))->second) != s.end());
+        }
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            assert(s.find(c2.find(2)->second) != s.end());
+            s.erase(s.find(c2.find(2)->second));
+            assert(s.find(std::next(c2.find(2))->second) != s.end());
+        }
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            assert(s.find(c2.find(1)->second) != s.end());
+            s.erase(s.find(c2.find(1)->second));
+            assert(s.find(std::next(c2.find(1))->second) != s.end());
+        }
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            assert(s.find(c2.find(2)->second) != s.end());
+            s.erase(s.find(c2.find(2)->second));
+            assert(s.find(std::next(c2.find(2))->second) != s.end());
+        }
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            assert(s.find(c2.find(1)->second) != s.end());
+            s.erase(s.find(c2.find(1)->second));
+            assert(s.find(std::next(c2.find(1))->second) != s.end());
+        }
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            assert(s.find(c2.find(2)->second) != s.end());
+            s.erase(s.find(c2.find(2)->second));
+            assert(s.find(std::next(c2.find(2))->second) != s.end());
+        }
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            assert(s.find(c2.find(1)->second) != s.end());
+            s.erase(s.find(c2.find(1)->second));
+            assert(s.find(std::next(c2.find(1))->second) != s.end());
+        }
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            assert(s.find(c2.find(2)->second) != s.end());
+            s.erase(s.find(c2.find(2)->second));
+            assert(s.find(std::next(c2.find(2))->second) != s.end());
+        }
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        {
+            std::set<std::string> s;
+            s.insert("one");
+            s.insert("four");
+            assert(s.find(c2.find(1)->second) != s.end());
+            s.erase(s.find(c2.find(1)->second));
+            assert(s.find(std::next(c2.find(1))->second) != s.end());
+        }
+        {
+            std::set<std::string> s;
+            s.insert("two");
+            s.insert("four");
+            assert(s.find(c2.find(2)->second) != s.end());
+            s.erase(s.find(c2.find(2)->second));
+            assert(s.find(std::next(c2.find(2))->second) != s.end());
+        }
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/types.pass.cpp
new file mode 100644
index 0000000..5af2f68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/types.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+// {
+// public:
+//     // types
+//     typedef Key                                                        key_type;
+//     typedef T                                                          mapped_type;
+//     typedef Hash                                                       hasher;
+//     typedef Pred                                                       key_equal;
+//     typedef Alloc                                                      allocator_type;
+//     typedef pair<const key_type, mapped_type>                          value_type;
+//     typedef value_type&                                                reference;
+//     typedef const value_type&                                          const_reference;
+//     typedef typename allocator_traits<allocator_type>::pointer         pointer;
+//     typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
+//     typedef typename allocator_traits<allocator_type>::size_type       size_type;
+//     typedef typename allocator_traits<allocator_type>::difference_type difference_type;
+
+#include <unordered_map>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<char, short> C;
+        static_assert((std::is_same<C::key_type, char>::value), "");
+        static_assert((std::is_same<C::mapped_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, std::allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::value_type, std::pair<const C::key_type, C::mapped_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, C::value_type*>::value), "");
+        static_assert((std::is_same<C::const_pointer, const C::value_type*>::value), "");
+        static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<char, short, std::hash<char>, std::equal_to<char>,
+                            min_allocator<std::pair<const char, short>>> C;
+        static_assert((std::is_same<C::key_type, char>::value), "");
+        static_assert((std::is_same<C::mapped_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, min_allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::value_type, std::pair<const C::key_type, C::mapped_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, min_pointer<C::value_type>>::value), "");
+        static_assert((std::is_same<C::const_pointer, min_pointer<const C::value_type>>::value), "");
+    //  min_allocator doesn't have a size_type, so one gets synthesized
+        static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp
new file mode 100644
index 0000000..de69e67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/allocator.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// explicit unordered_multimap(const allocator_type& __a);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(test_allocator<std::pair<const NotConstructible, NotConstructible> >(10));
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(min_allocator<std::pair<const NotConstructible, NotConstructible> >{});
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible>> A;
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        C c(A{});
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == A{});
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef std::unordered_multimap<T, T, HF, Comp, A> C;
+
+        A a(10);
+        C c(2, a);
+        LIBCPP_ASSERT(c.bucket_count() == 2);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef NotConstructible T;
+        typedef test_allocator<std::pair<const T, T>> A;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef std::unordered_multimap<T, T, HF, Comp, A> C;
+
+        A a(10);
+        HF hf(12);
+        C c(2, hf, a);
+        LIBCPP_ASSERT(c.bucket_count() == 2);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..ddb3a5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap& operator=(const unordered_multimap& u);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  {
+    std::unordered_multimap<int, operator_hijacker> mo;
+    std::unordered_multimap<int, operator_hijacker> m;
+    m = mo;
+  }
+  {
+    std::unordered_multimap<operator_hijacker, int> mo;
+    std::unordered_multimap<operator_hijacker, int> m;
+    m = mo;
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_copy.pass.cpp
new file mode 100644
index 0000000..d35d00d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_copy.pass.cpp
@@ -0,0 +1,213 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap& operator=(const unordered_multimap& u);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <algorithm>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<const int, std::string> P;
+        const P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a+sizeof(a)/sizeof(a[0]));
+        C *p = &c;
+        c = *p;
+        assert(c.size() == 6);
+        assert(std::is_permutation(c.begin(), c.end(), a));
+    }
+    {
+        typedef other_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef min_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_init.pass.cpp
new file mode 100644
index 0000000..9eb3fa3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_init.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap& operator=(initializer_list<value_type> il);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c =   {
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        c =     {
+                    P(1, "one"),
+                    P(2, "two"),
+                    P(3, "three"),
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef min_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c =   {
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        c =     {
+                    P(1, "one"),
+                    P(2, "two"),
+                    P(3, "three"),
+                    P(4, "four"),
+                    P(1, "four"),
+                    P(2, "four"),
+                };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_move.pass.cpp
new file mode 100644
index 0000000..c4ba567
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/assign_move.pass.cpp
@@ -0,0 +1,284 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap& operator=(unordered_multimap&& u);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef test_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(10)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef other_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef min_allocator<std::pair<const int, std::string> > A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..501ef75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// The test requires access control SFINAE.
+
+// <unordered_map>
+
+// Check that std::unordered_multimap fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <unordered_map>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs == rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_multimap<int, int, std::hash<int>, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/copy.pass.cpp
new file mode 100644
index 0000000..60c6341
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/copy.pass.cpp
@@ -0,0 +1,176 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(const unordered_multimap& u);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   other_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            other_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (other_allocator<std::pair<const int, std::string> >(-2)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/copy_alloc.pass.cpp
new file mode 100644
index 0000000..d9ec0ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/copy_alloc.pass.cpp
@@ -0,0 +1,176 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(const unordered_multimap& u, const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c(c0, test_allocator<std::pair<const int, std::string> >(5));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(5)));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C c(c0, min_allocator<std::pair<const int, std::string> >());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        C c(c0, A{});
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        s.insert("three");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(3), c.end(), 3, s);
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(4), c.end(), 4, s);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct.fail.cpp
new file mode 100644
index 0000000..5e8db67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct.fail.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// template<class InputIterator,
+//          class Hash = hash<iter-key-type<InputIterator>>,
+//          class Pred = equal_to<iter-key-type<InputIterator>>,
+//          class Allocator = allocator<iter-to-alloc-type<InputIterator>>>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash, Pred,
+//                    Allocator>;
+//
+// template<class Key, class T, class Hash = hash<Key>,
+//          class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
+// unordered_multimap(initializer_list<pair<Key, T>>,
+//               typename see below::size_type = see below, Hash = Hash(),
+//               Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multimap<Key, T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                    hash<iter-key-type<InputIterator>>,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash,
+//                    equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, typename see below::size_type, Allocator)
+//   -> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, Allocator)
+//   -> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Hash, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, typename see below::size_type, Hash,
+//               Allocator)
+//   -> unordered_multimap<Key, T, Hash, equal_to<Key>, Allocator>;
+
+#include <functional>
+#include <unordered_map>
+
+int main(int, char**)
+{
+    using P = std::pair<const int, int>;
+    {
+        // cannot deduce Key from nothing
+        std::unordered_multimap m; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Size)
+        std::unordered_multimap m(42); // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash)
+        std::unordered_multimap m(42, std::hash<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred)
+        std::unordered_multimap m(42, std::hash<int>(), std::equal_to<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred, Allocator)
+        std::unordered_multimap m(42, std::hash<int>(), std::equal_to<int>(), std::allocator<P>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Allocator)
+        std::unordered_multimap m(std::allocator<P>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Allocator)
+        std::unordered_multimap m(42, std::allocator<P>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Allocator)
+        std::unordered_multimap m(42, std::hash<int>(), std::allocator<P>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multimap'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct.pass.cpp
new file mode 100644
index 0000000..527cc4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Hash = hash<iter-key-type<InputIterator>>,
+//          class Pred = equal_to<iter-key-type<InputIterator>>,
+//          class Allocator = allocator<iter-to-alloc-type<InputIterator>>>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type = see below,
+//                    Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash, Pred,
+//                         Allocator>;
+//
+// template<class Key, class T, class Hash = hash<Key>,
+//          class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
+// unordered_multimap(initializer_list<pair<Key, T>>,
+//                    typename see below::size_type = see below, Hash = Hash(),
+//                    Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multimap<Key, T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                         hash<iter-key-type<InputIterator>>,
+//                         equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                         hash<iter-key-type<InputIterator>>,
+//                         equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash,
+//                         equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, typename see below::size_type, Allocator)
+//   -> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, Allocator)
+//   -> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Hash, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, typename see below::size_type, Hash,
+//                    Allocator)
+//   -> unordered_multimap<Key, T, Hash, equal_to<Key>, Allocator>;
+
+#include <algorithm> // is_permutation
+#include <cassert>
+#include <climits> // INT_MAX
+#include <type_traits>
+#include <unordered_map>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    const PC expected_m[] = { {1,1}, {1,1}, {2,2}, {3,1}, {INT_MAX,1} };
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<int>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>(), std::equal_to<>(), test_allocator<PC>(0, 41));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 41);
+    }
+
+    {
+    std::unordered_multimap<int, long> source;
+    std::unordered_multimap m(source);
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_multimap<int, long> source;
+    std::unordered_multimap m{source};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>> source;
+    test_allocator<PC> a(0, 42);
+    std::unordered_multimap m(source, a);
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.get_allocator().get_id() == 42);
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>> source;
+    test_allocator<PC> a(0, 43);
+    std::unordered_multimap m{source, a};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(m), decltype(source));
+    assert(m.get_allocator().get_id() == 43);
+    assert(m.size() == 0);
+    }
+
+    {
+    std::unordered_multimap m { P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} };
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<short>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<short>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<short>(), std::equal_to<>(), test_allocator<PC>(0, 44));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 44);
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, test_allocator<PC>(0, 45));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    {
+    const P arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>(), test_allocator<PC>(0, 46));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 46);
+    }
+
+    {
+    std::unordered_multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, test_allocator<PC>(0, 47));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 47);
+    }
+
+    {
+    std::unordered_multimap m({ P{1,1L}, P{2,2L}, P{1,1L}, P{INT_MAX,1L}, P{3,1L} }, 42, std::hash<short>(), test_allocator<PC>(0, 48));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 48);
+    }
+
+    {
+    // Examples from LWG3025
+    std::unordered_multimap m{std::pair{1, 1}, {2, 2}, {3, 3}};
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, int>);
+
+    std::unordered_multimap m2{m.begin(), m.end()};
+    ASSERT_SAME_TYPE(decltype(m2), std::unordered_multimap<int, int>);
+    }
+
+    {
+    // Examples from LWG3531
+    std::unordered_multimap m1{{std::pair{1, 2}, {3, 4}}, 0};
+    ASSERT_SAME_TYPE(decltype(m1), std::unordered_multimap<int, int>);
+
+    using value_type = std::pair<const int, int>;
+    std::unordered_multimap m2{{value_type{1, 2}, {3, 4}}, 0};
+    ASSERT_SAME_TYPE(decltype(m2), std::unordered_multimap<int, int>);
+    }
+
+    UnorderedContainerDeductionGuidesSfinaeAway<std::unordered_multimap, std::unordered_multimap<int, long>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct_const.pass.cpp
new file mode 100644
index 0000000..5a98a01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/deduct_const.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//          class Hash = hash<iter-key-type<InputIterator>>,
+//          class Pred = equal_to<iter-key-type<InputIterator>>,
+//          class Allocator = allocator<iter-to-alloc-type<InputIterator>>>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type = see below,
+//                    Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash, Pred,
+//                         Allocator>;
+//
+// template<class Key, class T, class Hash = hash<Key>,
+//          class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
+// unordered_multimap(initializer_list<pair<Key, T>>,
+//                    typename see below::size_type = see below, Hash = Hash(),
+//                    Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multimap<Key, T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                         hash<iter-key-type<InputIterator>>,
+//                         equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>,
+//                         hash<iter-key-type<InputIterator>>,
+//                         equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
+//   -> unordered_multimap<iter-key-type<InputIterator>, iter-mapped-type<InputIterator>, Hash,
+//                         equal_to<iter-key-type<InputIterator>>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, typename see below::size_type, Allocator)
+//   -> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, Allocator)
+//   -> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>;
+//
+// template<class Key, class T, class Hash, class Allocator>
+// unordered_multimap(initializer_list<pair<Key, T>>, typename see below::size_type, Hash,
+//                    Allocator)
+//   -> unordered_multimap<Key, T, Hash, equal_to<Key>, Allocator>;
+
+#include <algorithm> // is_permutation
+#include <cassert>
+#include <climits> // INT_MAX
+#include <functional>
+#include <iterator>
+#include <type_traits>
+#include <unordered_map>
+
+#include "test_allocator.h"
+
+using P = std::pair<int, long>;
+using PC = std::pair<const int, long>;
+
+int main(int, char**)
+{
+    const PC expected_m[] = { {1,1}, {1,1}, {2,2}, {3,1}, {INT_MAX,1} };
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<int>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>(), std::equal_to<>(), test_allocator<PC>(0, 41));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 41);
+    }
+
+    {
+    std::unordered_multimap m { PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} };
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42);
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>(), std::equal_to<>());
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    }
+
+    {
+    std::unordered_multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>(), std::equal_to<>(), test_allocator<PC>(0, 44));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 44);
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, test_allocator<PC>(0, 45));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 45);
+    }
+
+    {
+    const PC arr[] = { {1,1}, {2,2}, {1,1}, {INT_MAX,1}, {3,1} };
+    std::unordered_multimap m(std::begin(arr), std::end(arr), 42, std::hash<short>(), test_allocator<PC>(0, 46));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 46);
+    }
+
+    {
+    std::unordered_multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, test_allocator<PC>(0, 47));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<int>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 47);
+    }
+
+    {
+    std::unordered_multimap m({ PC{1,1L}, PC{2,2L}, PC{1,1L}, PC{INT_MAX,1L}, PC{3,1L} }, 42, std::hash<short>(), test_allocator<PC>(0, 48));
+    ASSERT_SAME_TYPE(decltype(m), std::unordered_multimap<int, long, std::hash<short>, std::equal_to<int>, test_allocator<PC>>);
+    assert(std::is_permutation(m.begin(), m.end(), std::begin(expected_m), std::end(expected_m)));
+    assert(m.get_allocator().get_id() == 48);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default.pass.cpp
new file mode 100644
index 0000000..deea354
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap();
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible>> A;
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        {
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == A());
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+        {
+        A a;
+        C c(a);
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+    }
+    {
+        std::unordered_multimap<int, int> c = {};
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default_noexcept.pass.cpp
new file mode 100644
index 0000000..394600a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/default_noexcept.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// unordered_multimap()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "../../../test_hash.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..e8160e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/dtor_noexcept.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// ~unordered_multimap() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    ~some_hash() noexcept(false);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/hash_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/hash_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..77faad2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/hash_copy_constructible.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// The test requires access control SFINAE.
+
+// <unordered_map>
+
+// Check that std::unordered_multimap fails to instantiate if the hash function is
+// not copy-constructible. This is mentioned in LWG issue 2436
+
+#include <unordered_map>
+
+template <class T>
+struct Hash {
+    std::size_t operator () (const T& lhs) const { return 0; }
+
+    Hash () {}
+private:
+    Hash (const Hash &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_multimap<int, int, Hash<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp
new file mode 100644
index 0000000..8486062
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init.pass.cpp
@@ -0,0 +1,238 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c = {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c = {
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        A a(42);
+        C c ({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, a );
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        HF hf(42);
+        A a(43);
+        C c ({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+              }, 12, hf, a );
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size.pass.cpp
new file mode 100644
index 0000000..c5cb706
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il, size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_allocator.pass.cpp
new file mode 100644
index 0000000..5239771
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_allocator.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il, size_type n,
+//                    const allocator_type& alloc);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multimap<int, std::string,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    typedef std::pair<int, std::string> P;
+    C c({
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four")
+        },
+        7,
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+
+    typedef std::pair<typename C::const_iterator, typename C::const_iterator> Eq;
+    Eq eq = c.equal_range(1);
+    assert(std::distance(eq.first, eq.second) == 2);
+    std::multiset<std::string> s;
+    s.insert("one");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(1), c.end(), 1, s);
+
+    eq = c.equal_range(2);
+    assert(std::distance(eq.first, eq.second) == 2);
+    s.insert("two");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(2), c.end(), 2, s);
+
+    eq = c.equal_range(3);
+    assert(std::distance(eq.first, eq.second) == 1);
+    typename C::const_iterator i = eq.first;
+    assert(i->first == 3);
+    assert(i->second == "three");
+
+    eq = c.equal_range(4);
+    assert(std::distance(eq.first, eq.second) == 1);
+    i = eq.first;
+    assert(i->first == 4);
+    assert(i->second == "four");
+
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> V;
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash.pass.cpp
new file mode 100644
index 0000000..785df17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il, size_type n, const hasher& hf);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..6d0f4e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_allocator.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il, size_type n,
+//                    const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multimap<int, std::string,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    typedef std::pair<int, std::string> P;
+    C c({
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four")
+        },
+        7,
+        test_hash<int>(5),
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+
+    typedef std::pair<typename C::const_iterator, typename C::const_iterator> Eq;
+    Eq eq = c.equal_range(1);
+    assert(std::distance(eq.first, eq.second) == 2);
+    std::multiset<std::string> s;
+    s.insert("one");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(1), c.end(), 1, s);
+
+    eq = c.equal_range(2);
+    assert(std::distance(eq.first, eq.second) == 2);
+    s.insert("two");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(2), c.end(), 2, s);
+
+    eq = c.equal_range(3);
+    assert(std::distance(eq.first, eq.second) == 1);
+    typename C::const_iterator i = eq.first;
+    assert(i->first == 3);
+    assert(i->second == "three");
+
+    eq = c.equal_range(4);
+    assert(std::distance(eq.first, eq.second) == 1);
+    i = eq.first;
+    assert(i->first == 4);
+    assert(i->second == "four");
+
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> V;
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..42d3aa2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_equal.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..beeb5b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/init_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >(10)));
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+    {
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        C c({
+                P(1, "one"),
+                P(2, "two"),
+                P(3, "three"),
+                P(4, "four"),
+                P(1, "four"),
+                P(2, "four"),
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter.pass.cpp
new file mode 100644
index 0000000..b3974e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter.pass.cpp
@@ -0,0 +1,249 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+//     unordered_multimap(InputIterator first, InputIterator last);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../check_consecutive.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+         A a(42);
+       C c(cpp17_input_iterator<P*>(arr), cpp17_input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 14, a);
+        assert(c.bucket_count() >= 14);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef test_hash<int> HF;
+        typedef test_equal_to<int> Comp;
+        typedef std::unordered_multimap<int, std::string, HF, Comp, A> C;
+
+        P arr[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        A a(42);
+        HF hf (43);
+        C c(cpp17_input_iterator<P*>(arr), cpp17_input_iterator<P*>(arr + sizeof(arr)/sizeof(arr[0])), 12, hf, a );
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size.pass.cpp
new file mode 100644
index 0000000..374e95e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+//     unordered_multimap(InputIterator first, InputIterator last, size_type n);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../check_consecutive.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            10
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 11);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            10
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 11);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_allocator.pass.cpp
new file mode 100644
index 0000000..5c1f4b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_allocator.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+// unordered_multimap(InputIterator first, InputIterator last, size_type n,
+//                    const allocator_type& alloc);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multimap<int, std::string,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    typedef std::pair<int, std::string> P;
+    P a[] =
+    {
+        P(1, "one"),
+        P(2, "two"),
+        P(3, "three"),
+        P(4, "four"),
+        P(1, "four"),
+        P(2, "four")
+    };
+
+    C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a) / sizeof(a[0])),
+        7,
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+
+    typedef std::pair<typename C::const_iterator, typename C::const_iterator> Eq;
+    Eq eq = c.equal_range(1);
+    assert(std::distance(eq.first, eq.second) == 2);
+    std::multiset<std::string> s;
+    s.insert("one");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(1), c.end(), 1, s);
+
+    eq = c.equal_range(2);
+    assert(std::distance(eq.first, eq.second) == 2);
+    s.insert("two");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(2), c.end(), 2, s);
+
+    eq = c.equal_range(3);
+    assert(std::distance(eq.first, eq.second) == 1);
+    typename C::const_iterator i = eq.first;
+    assert(i->first == 3);
+    assert(i->second == "three");
+
+    eq = c.equal_range(4);
+    assert(std::distance(eq.first, eq.second) == 1);
+    i = eq.first;
+    assert(i->first == 4);
+    assert(i->second == "four");
+
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> V;
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash.pass.cpp
new file mode 100644
index 0000000..ce99c91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash.pass.cpp
@@ -0,0 +1,148 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+//     unordered_multimap(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../check_consecutive.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..82cb9fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_allocator.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+// unordered_multimap(InputIterator first, InputIterator last, size_type n,
+//                    const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multimap<int, std::string,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    typedef std::pair<int, std::string> P;
+    P a[] =
+    {
+        P(1, "one"),
+        P(2, "two"),
+        P(3, "three"),
+        P(4, "four"),
+        P(1, "four"),
+        P(2, "four")
+    };
+
+    C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a) / sizeof(a[0])),
+        7,
+        test_hash<int>(5),
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+
+    typedef std::pair<typename C::const_iterator, typename C::const_iterator> Eq;
+    Eq eq = c.equal_range(1);
+    assert(std::distance(eq.first, eq.second) == 2);
+    std::multiset<std::string> s;
+    s.insert("one");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(1), c.end(), 1, s);
+
+    eq = c.equal_range(2);
+    assert(std::distance(eq.first, eq.second) == 2);
+    s.insert("two");
+    s.insert("four");
+    CheckConsecutiveKeys<typename C::const_iterator>(c.find(2), c.end(), 2, s);
+
+    eq = c.equal_range(3);
+    assert(std::distance(eq.first, eq.second) == 1);
+    typename C::const_iterator i = eq.first;
+    assert(i->first == 3);
+    assert(i->second == "three");
+
+    eq = c.equal_range(4);
+    assert(std::distance(eq.first, eq.second) == 1);
+    i = eq.first;
+    assert(i->first == 4);
+    assert(i->second == "four");
+
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size() / c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const int, std::string> V;
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..0a27a4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_equal.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+//     unordered_multimap(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >()));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..0dd157a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,209 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+//     unordered_multimap(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql,
+//                   const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../NotConstructible.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >(10)));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+    }
+    {
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..73b19f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move.addressof.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(unordered_multimap&&)
+//   noexcept(
+//     is_nothrow_move_constructible<hasher>::value &&
+//     is_nothrow_move_constructible<key_equal>::value &&
+//     is_nothrow_move_constructible<allocator_type>::value);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_multimap<operator_hijacker, operator_hijacker> mo;
+  std::unordered_multimap<operator_hijacker, operator_hijacker> m(std::move(mo));
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move.pass.cpp
new file mode 100644
index 0000000..afe88a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move.pass.cpp
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(unordered_multimap&& u);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const int, std::string> >(10)));
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<std::pair<const int, std::string> >(10)
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >(10)));
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const int, std::string> >()));
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<std::pair<const int, std::string> >
+                                   > C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<std::pair<const int, std::string> >()
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+
+        assert(c0.empty());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_alloc.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_alloc.addressof.compile.pass.cpp
new file mode 100644
index 0000000..6419a03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_alloc.addressof.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(unordered_map&& u, const allocator_type& a);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+void test() {
+  using A = test_allocator<std::pair<const operator_hijacker, operator_hijacker>>;
+  using C = std::unordered_multimap<operator_hijacker, operator_hijacker, std::hash<operator_hijacker>,
+                                    std::equal_to<operator_hijacker>, A>;
+
+  C mo;
+  C m(std::move(mo), A());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_alloc.pass.cpp
new file mode 100644
index 0000000..01260c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_alloc.pass.cpp
@@ -0,0 +1,274 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(unordered_multimap&& u, const allocator_type& a);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(12));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >(12)));
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef test_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(10));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >(10)));
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef min_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(std::move(c0), A());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::pair<int, std::string> P;
+        typedef explicit_allocator<std::pair<const int, std::string>> A;
+        typedef std::unordered_multimap<int, std::string,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A{}
+           );
+        C c(std::move(c0), A());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator i = eq.first;
+        assert(i->first == 3);
+        assert(i->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        i = eq.first;
+        assert(i->first == 4);
+        assert(i->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A{});
+
+        assert(c0.empty());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..2cd9954
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_assign_noexcept.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// unordered_multimap& operator=(unordered_multimap&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    some_hash& operator=(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_noexcept.pass.cpp
new file mode 100644
index 0000000..ae62e66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/move_noexcept.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// unordered_multimap(unordered_multimap&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size.compile.fail.cpp
new file mode 100644
index 0000000..810f6a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size.compile.fail.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size.pass.cpp
new file mode 100644
index 0000000..fa87144
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_allocator.pass.cpp
new file mode 100644
index 0000000..b90f6db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_allocator.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                    test_hash<NotConstructible>,
+                                    test_equal_to<NotConstructible>,
+                                    Allocator> C;
+    C c(7,
+        alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>());
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const NotConstructible, NotConstructible> V;
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash.pass.cpp
new file mode 100644
index 0000000..70bab41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n, const hasher& hf);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..ad98e99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_allocator.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n, const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                    test_hash<NotConstructible>,
+                                    test_equal_to<NotConstructible>,
+                                    Allocator> C;
+    C c(7,
+        test_hash<NotConstructible>(8),
+        alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>(8));
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    typedef std::pair<const NotConstructible, NotConstructible> V;
+    test(test_allocator<V>(10));
+    test(min_allocator<V>());
+    test(explicit_allocator<V>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_equal.pass.cpp
new file mode 100644
index 0000000..7709dfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_equal.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n, const hasher& hf, const key_equal& eql);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..1fd4bb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.cnstr/size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// unordered_multimap(size_type n, const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<std::pair<const NotConstructible,
+                                                                  NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<std::pair<const NotConstructible,
+                                                                 NotConstructible> >
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            min_allocator<std::pair<const NotConstructible, NotConstructible> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() ==
+               (min_allocator<std::pair<const NotConstructible, NotConstructible> >()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<std::pair<const NotConstructible, NotConstructible> > A;
+        typedef std::unordered_multimap<NotConstructible, NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            A{}
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == A{});
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..71c3c57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/clear.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// void clear() noexcept;
+
+#include <unordered_map>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..1f32893
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class... Args>
+//     iterator emplace(Args&&... args);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, Emplaceable> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
+                                                  std::forward_as_tuple());
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable());
+
+        r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
+        assert(c.size() == 2);
+        assert(r->first == 4);
+        assert(r->second == Emplaceable(5, 6));
+
+        r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
+                                                std::forward_as_tuple(6, 7));
+        assert(c.size() == 3);
+        assert(r->first == 5);
+        assert(r->second == Emplaceable(6, 7));
+    }
+    {
+        typedef std::unordered_multimap<int, Emplaceable, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, Emplaceable>>> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.emplace(std::piecewise_construct, std::forward_as_tuple(3),
+                                                  std::forward_as_tuple());
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable());
+
+        r = c.emplace(std::pair<const int, Emplaceable>(4, Emplaceable(5, 6)));
+        assert(c.size() == 2);
+        assert(r->first == 4);
+        assert(r->second == Emplaceable(5, 6));
+
+        r = c.emplace(std::piecewise_construct, std::forward_as_tuple(5),
+                                                std::forward_as_tuple(6, 7));
+        assert(c.size() == 3);
+        assert(r->first == 5);
+        assert(r->second == Emplaceable(6, 7));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace_hint.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace_hint.addressof.compile.pass.cpp
new file mode 100644
index 0000000..5e23b73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace_hint.addressof.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator position, Args&&... args);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_multimap<operator_hijacker, operator_hijacker> m;
+  m.emplace_hint(m.cbegin());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace_hint.pass.cpp
new file mode 100644
index 0000000..2a6e3f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/emplace_hint.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator p, Args&&... args);
+
+
+#include <unordered_map>
+#include <cassert>
+#include <iterator>
+
+#include "../../../Emplaceable.h"
+#include "min_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, Emplaceable> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.emplace_hint(e, std::piecewise_construct, std::forward_as_tuple(3),
+                                                          std::forward_as_tuple());
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable());
+
+        r = c.emplace_hint(c.end(), std::pair<const int, Emplaceable>(3, Emplaceable(5, 6)));
+        assert(c.size() == 2);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable(5, 6));
+        LIBCPP_ASSERT(r == std::next(c.begin()));
+
+        r = c.emplace_hint(r, std::piecewise_construct, std::forward_as_tuple(3),
+                                                        std::forward_as_tuple(6, 7));
+        assert(c.size() == 3);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable(6, 7));
+        LIBCPP_ASSERT(r == std::next(c.begin()));
+        r = c.begin();
+        assert(r->first == 3);
+        LIBCPP_ASSERT(r->second == Emplaceable());
+        r = std::next(r, 2);
+        assert(r->first == 3);
+        LIBCPP_ASSERT(r->second == Emplaceable(5, 6));
+    }
+    {
+        typedef std::unordered_multimap<int, Emplaceable, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, Emplaceable>>> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.emplace_hint(e, std::piecewise_construct, std::forward_as_tuple(3),
+                                                          std::forward_as_tuple());
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable());
+
+        r = c.emplace_hint(c.end(), std::pair<const int, Emplaceable>(3, Emplaceable(5, 6)));
+        assert(c.size() == 2);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable(5, 6));
+        LIBCPP_ASSERT(r == std::next(c.begin()));
+
+        r = c.emplace_hint(r, std::piecewise_construct, std::forward_as_tuple(3),
+                                                        std::forward_as_tuple(6, 7));
+        assert(c.size() == 3);
+        assert(r->first == 3);
+        assert(r->second == Emplaceable(6, 7));
+        LIBCPP_ASSERT(r == std::next(c.begin()));
+        r = c.begin();
+        assert(r->first == 3);
+        LIBCPP_ASSERT(r->second == Emplaceable());
+        r = std::next(r, 2);
+        assert(r->first == 3);
+        LIBCPP_ASSERT(r->second == Emplaceable(5, 6));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_const_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_const_iter.pass.cpp
new file mode 100644
index 0000000..b237e3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_const_iter.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator erase(const_iterator p)
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator==(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+struct Hash { size_t operator() (const TemplateConstructor &) const { return 0; } };
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator i_next = i;
+        ++i_next;
+        std::string es = i->second;
+        C::iterator j = c.erase(i);
+        assert(j == i_next);
+
+        assert(c.size() == 5);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator k = eq.first;
+        assert(k->first == 2);
+        assert(k->second == (es == "two" ? "four" : "two"));
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator i_next = i;
+        ++i_next;
+        std::string es = i->second;
+        C::iterator j = c.erase(i);
+        assert(j == i_next);
+
+        assert(c.size() == 5);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator k = eq.first;
+        assert(k->first == 2);
+        assert(k->second == (es == "two" ? "four" : "two"));
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::unordered_multimap<T, int, Hash> C;
+        typedef C::iterator I;
+
+        C m;
+        T a{0};
+        I it = m.find(a);
+        if (it != m.end())
+            m.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_key.pass.cpp
new file mode 100644
index 0000000..25464c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_key.pass.cpp
@@ -0,0 +1,359 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// size_type erase(const key_type& k);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+template <typename Unordered>
+bool only_deletions ( const Unordered &whole, const Unordered &part ) {
+    typename Unordered::const_iterator w = whole.begin();
+    typename Unordered::const_iterator p = part.begin();
+
+    while ( w != whole.end () && p != part.end()) {
+        if ( *w == *p )
+            p++;
+        w++;
+        }
+
+    return p == part.end();
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(2) == 2);
+        assert(c.size() == 4);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 4);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 3);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 3);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(1) == 2);
+        assert(c.size() == 1);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 0);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 0);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 6);
+        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::const_iterator k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(2) == 2);
+        assert(c.size() == 4);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 4);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 3);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 3);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(1) == 2);
+        assert(c.size() == 1);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 0);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 0);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+    {
+    typedef std::unordered_multimap<int, int> C;
+    C m, m2;
+    for ( int i = 0; i < 10; ++i ) {
+        for (int j = 0; j < 2; ++j ) {
+            m.insert (std::make_pair(i,j));
+            m2.insert(std::make_pair(i,j));
+            }
+        }
+
+    C::iterator i = m2.begin();
+    int ctr = 0;
+    while (i != m2.end()) {
+        if (ctr++ % 2 == 0)
+            m2.erase(i++);
+        else
+            ++i;
+        }
+
+    assert (only_deletions (m, m2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_range.pass.cpp
new file mode 100644
index 0000000..cab3702
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/erase_range.pass.cpp
@@ -0,0 +1,168 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator erase(const_iterator first, const_iterator last)
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i, 2);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 6);
+        typedef std::pair<C::iterator, C::iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        k = c.erase(i, j);
+        assert(c.size() == 4);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i, 2);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 6);
+        typedef std::pair<C::iterator, C::iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        k = c.erase(i, j);
+        assert(c.size() == 4);
+        eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/extract_iterator.pass.cpp
new file mode 100644
index 0000000..1b9e741
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/extract_iterator.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// node_type extract(const_iterator);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    auto some_key = c.cbegin()->first;
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = first->first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.key() == key_value);
+        t.key() = some_key;
+        assert(t.key() == some_key);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using map_type = std::unordered_multimap<int, int>;
+        map_type m = {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        test(m);
+    }
+
+    {
+        std::unordered_multimap<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        assert(Counter_base::gConstructed == 12);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>,
+                                    min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/extract_key.pass.cpp
new file mode 100644
index 0000000..293e0c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/extract_key.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// node_type extract(key_type const&);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.key() == *copy);
+        t.key() = *first; // We should be able to mutate key.
+        assert(t.key() == *first);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::unordered_multimap<int, int> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::unordered_multimap<Counter<int>, Counter<int>> m =
+            {{1,1}, {2,2}, {3,3}, {4,4}, {5,5}, {6,6}};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 12+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_map =
+            std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>,
+                                    min_allocator<std::pair<const int, int>>>;
+        min_alloc_map m = {{1, 1}, {2, 2}, {3, 3}, {4, 4}, {5, 5}, {6, 6}};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..d9d338c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_allocator_requirements.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// insert(...)
+
+// UNSUPPORTED: c++03
+
+#include <unordered_map>
+
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../../map_allocator_requirement_test_templates.h"
+
+int main(int, char**)
+{
+  testMultimapInsert<TCT::unordered_multimap<> >();
+  testMultimapInsertHint<TCT::unordered_multimap<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_const_lvalue.pass.cpp
new file mode 100644
index 0000000..fb3d390
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_const_lvalue.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator insert(const value_type& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_const_lvalue_test()
+{
+    typedef Container C;
+    typedef typename C::iterator R;
+    typedef typename C::value_type VT;
+    C c;
+    const VT v1(3.5, 3);
+    R r = c.insert(v1);
+    assert(c.size() == 1);
+    assert(r->first == 3.5);
+    assert(r->second == 3);
+
+    const VT v2(3.5, 4);
+    r = c.insert(v2);
+    assert(c.size() == 2);
+    assert(r->first == 3.5);
+    assert(r->second == 4);
+
+    const VT v3(4.5, 4);
+    r = c.insert(v3);
+    assert(c.size() == 3);
+    assert(r->first == 4.5);
+    assert(r->second == 4);
+
+    const VT v4(5.5, 4);
+    r = c.insert(v4);
+    assert(c.size() == 4);
+    assert(r->first == 5.5);
+    assert(r->second == 4);
+}
+
+int main(int, char**)
+{
+    do_insert_const_lvalue_test<std::unordered_multimap<double, int> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+        do_insert_const_lvalue_test<C>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..b3a5487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_hint_const_lvalue.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// iterator insert(const_iterator p, const value_type& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_const_lvalue_test()
+{
+    typedef Container C;
+    typedef typename C::iterator R;
+    typedef typename C::value_type VT;
+    C c;
+    typename C::const_iterator e = c.end();
+    const VT v1(3.5, 3);
+    R r = c.insert(e, v1);
+    assert(c.size() == 1);
+    assert(r->first == 3.5);
+    assert(r->second == 3);
+
+    const VT v2(3.5, 4);
+    r = c.insert(r, v2);
+    assert(c.size() == 2);
+    assert(r->first == 3.5);
+    assert(r->second == 4);
+
+    const VT v3(4.5, 4);
+    r = c.insert(c.end(), v3);
+    assert(c.size() == 3);
+    assert(r->first == 4.5);
+    assert(r->second == 4);
+
+    const VT v4(5.5, 4);
+    r = c.insert(c.end(), v4);
+    assert(c.size() == 4);
+    assert(r->first == 5.5);
+    assert(r->second == 4);
+}
+
+int main(int, char**)
+{
+    do_insert_const_lvalue_test<std::unordered_multimap<double, int> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+        do_insert_const_lvalue_test<C>();
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_hint_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_hint_rvalue.pass.cpp
new file mode 100644
index 0000000..6fa3b45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_hint_rvalue.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     iterator insert(const_iterator p, P&& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<double, int> C;
+        typedef C::iterator R;
+        typedef std::pair<double, short> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5, static_cast<short>(3)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3.5, static_cast<short>(4)));
+        assert(c.size() == 2);
+        assert(r->first == 3.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(4.5, static_cast<short>(4)));
+        assert(c.size() == 3);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5.5, static_cast<short>(4)));
+        assert(c.size() == 4);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        typedef C::iterator R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3, 3));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3, 4));
+        assert(c.size() == 2);
+        assert(r->first == 3);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(4, 4));
+        assert(c.size() == 3);
+        assert(r->first == 4);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5, 4));
+        assert(c.size() == 4);
+        assert(r->first == 5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+        typedef C::iterator R;
+        typedef std::pair<double, short> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5, static_cast<short>(3)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3.5, static_cast<short>(4)));
+        assert(c.size() == 2);
+        assert(r->first == 3.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(4.5, static_cast<short>(4)));
+        assert(c.size() == 3);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5.5, static_cast<short>(4)));
+        assert(c.size() == 4);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>, std::equal_to<MoveOnly>,
+                            min_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        typedef C::iterator R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3, 3));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(r, P(3, 4));
+        assert(c.size() == 2);
+        assert(r->first == 3);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(4, 4));
+        assert(c.size() == 3);
+        assert(r->first == 4);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), P(5, 4));
+        assert(c.size() == 4);
+        assert(r->first == 5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<double, int> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, {3.5, 3});
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(r, {3.5, 4});
+        assert(c.size() == 2);
+        assert(r->first == 3.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), {4.5, 4});
+        assert(c.size() == 3);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(c.end(), {5.5, 4});
+        assert(c.size() == 4);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_init.pass.cpp
new file mode 100644
index 0000000..3f7af5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_init.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// void insert(initializer_list<value_type> il);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        C c;
+        c.insert(
+                    {
+                        P(1, "one"),
+                        P(2, "two"),
+                        P(3, "three"),
+                        P(4, "four"),
+                        P(1, "four"),
+                        P(2, "four"),
+                    }
+                );
+        assert(c.size() == 6);
+        typedef std::pair<C::iterator, C::iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::iterator k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        C c;
+        c.insert(
+                    {
+                        P(1, "one"),
+                        P(2, "two"),
+                        P(3, "three"),
+                        P(4, "four"),
+                        P(1, "four"),
+                        P(2, "four"),
+                    }
+                );
+        assert(c.size() == 6);
+        typedef std::pair<C::iterator, C::iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::iterator k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_node_type.pass.cpp
new file mode 100644
index 0000000..d9131c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_node_type.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// iterator insert(node_type&&);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto it = c.insert({key, mapped});
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        typename Container::iterator it = c.insert(std::move(node));
+        assert(node.empty());
+        assert(it == c.find(i) && it != c.end());
+        assert(it->first == i && it->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto it = c.insert(std::move(def));
+        assert(def.empty());
+        assert(it == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0, 42);
+        auto it = c.insert(std::move(dupl));
+        assert(dupl.empty());
+        assert(it != c.end() && it->second == 42);
+    }
+
+    assert(c.size() == 11);
+    assert(c.count(0) == 2);
+    for (int i = 1; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c.find(i)->second == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_multimap<int, int> m;
+    test(m);
+    std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..5b8cd8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_node_type_hint.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <unordered_map>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key,
+             typename Container::mapped_type const& mapped)
+{
+    static Container c;
+    auto it = c.insert({key, mapped});
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i, i + 1);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(node.empty());
+        assert(prev + 1 == c.size());
+        assert(it->first == i);
+        assert(it->second == i + 1);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+        assert(c.find(i)->second == i + 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_multimap<int, int> m;
+    test(m);
+    std::unordered_multimap<int, int, std::hash<int>, std::equal_to<int>, min_allocator<std::pair<const int, int>>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_range.pass.cpp
new file mode 100644
index 0000000..519ed7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_range.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class InputIterator>
+//     void insert(InputIterator first, InputIterator last);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<int, std::string> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 6);
+        typedef std::pair<C::iterator, C::iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::iterator k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multimap<int, std::string, std::hash<int>, std::equal_to<int>,
+                            min_allocator<std::pair<const int, std::string>>> C;
+        typedef std::pair<int, std::string> P;
+        P a[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 6);
+        typedef std::pair<C::iterator, C::iterator> Eq;
+        Eq eq = c.equal_range(1);
+        assert(std::distance(eq.first, eq.second) == 2);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(1), c.end(), 1, s);
+        eq = c.equal_range(2);
+        assert(std::distance(eq.first, eq.second) == 2);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c.find(2), c.end(), 2, s);
+        eq = c.equal_range(3);
+        assert(std::distance(eq.first, eq.second) == 1);
+        C::iterator k = eq.first;
+        assert(k->first == 3);
+        assert(k->second == "three");
+        eq = c.equal_range(4);
+        assert(std::distance(eq.first, eq.second) == 1);
+        k = eq.first;
+        assert(k->first == 4);
+        assert(k->second == "four");
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_rvalue.pass.cpp
new file mode 100644
index 0000000..89d842f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/insert_rvalue.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// template <class P,
+//           class = typename enable_if<is_convertible<P, value_type>::value>::type>
+//     iterator insert(P&& x);
+
+#include <unordered_map>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multimap<double, int> C;
+        typedef C::iterator R;
+        typedef std::pair<double, short> P;
+        C c;
+        R r = c.insert(P(3.5, static_cast<short>(3)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(P(3.5, static_cast<short>(4)));
+        assert(c.size() == 2);
+        assert(r->first == 3.5);
+        assert(r->second == 4);
+
+        r = c.insert(P(4.5, static_cast<short>(4)));
+        assert(c.size() == 3);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(P(5.5, static_cast<short>(4)));
+        assert(c.size() == 4);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        typedef C::iterator R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        R r = c.insert(P(3, 3));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(P(3, 4));
+        assert(c.size() == 2);
+        assert(r->first == 3);
+        assert(r->second == 4);
+
+        r = c.insert(P(4, 4));
+        assert(c.size() == 3);
+        assert(r->first == 4);
+        assert(r->second == 4);
+
+        r = c.insert(P(5, 4));
+        assert(c.size() == 4);
+        assert(r->first == 5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<double, int, std::hash<double>, std::equal_to<double>,
+                            min_allocator<std::pair<const double, int>>> C;
+        typedef C::iterator R;
+        typedef std::pair<double, short> P;
+        C c;
+        R r = c.insert(P(3.5, static_cast<short>(3)));
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert(P(3.5, static_cast<short>(4)));
+        assert(c.size() == 2);
+        assert(r->first == 3.5);
+        assert(r->second == 4);
+
+        r = c.insert(P(4.5, static_cast<short>(4)));
+        assert(c.size() == 3);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert(P(5.5, static_cast<short>(4)));
+        assert(c.size() == 4);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>, std::equal_to<MoveOnly>,
+                            min_allocator<std::pair<const MoveOnly, MoveOnly>>> C;
+        typedef C::iterator R;
+        typedef std::pair<MoveOnly, MoveOnly> P;
+        C c;
+        R r = c.insert(P(3, 3));
+        assert(c.size() == 1);
+        assert(r->first == 3);
+        assert(r->second == 3);
+
+        r = c.insert(P(3, 4));
+        assert(c.size() == 2);
+        assert(r->first == 3);
+        assert(r->second == 4);
+
+        r = c.insert(P(4, 4));
+        assert(c.size() == 3);
+        assert(r->first == 4);
+        assert(r->second == 4);
+
+        r = c.insert(P(5, 4));
+        assert(c.size() == 4);
+        assert(r->first == 5);
+        assert(r->second == 4);
+    }
+    {
+        typedef std::unordered_multimap<double, MoveOnly> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.insert({3.5, 3});
+        assert(c.size() == 1);
+        assert(r->first == 3.5);
+        assert(r->second == 3);
+
+        r = c.insert({3.5, 4});
+        assert(c.size() == 2);
+        assert(r->first == 3.5);
+        assert(r->second == 4);
+
+        r = c.insert({4.5, 4});
+        assert(c.size() == 3);
+        assert(r->first == 4.5);
+        assert(r->second == 4);
+
+        r = c.insert({5.5, 4});
+        assert(c.size() == 4);
+        assert(r->first == 5.5);
+        assert(r->second == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp
new file mode 100644
index 0000000..04b1126
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_map>
+
+// class unordered_multimap
+
+// template <class H2, class P2>
+//   void merge(unordered_map<key_type, value_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_map<key_type, value_type, H2, P2, allocator_type>&& source);
+// template <class H2, class P2>
+//   void merge(unordered_multimap<key_type, value_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_multimap<key_type, value_type, H2, P2, allocator_type>&& source);
+
+#include <unordered_map>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Map>
+bool map_equal(const Map& map, Map other)
+{
+    return map == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <class T>
+struct throw_hasher
+{
+    bool& should_throw_;
+
+    throw_hasher(bool& should_throw) : should_throw_(should_throw) {}
+
+    size_t operator()(const T& p) const
+    {
+        if (should_throw_)
+            throw 0;
+        return std::hash<T>()(p);
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::unordered_multimap<int, int> src{{1, 0}, {3, 0}, {5, 0}};
+        std::unordered_multimap<int, int> dst{{2, 0}, {4, 0}, {5, 0}};
+        dst.merge(src);
+        assert(map_equal(src, {}));
+        assert(map_equal(dst, {{1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}, {5, 0}}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::unordered_multimap<Counter<int>, int, throw_hasher<Counter<int>>> map_type;
+        map_type src({{1, 0}, {3, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw));
+        map_type dst({{2, 0}, {4, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(map_equal(src, map_type({{1, 0}, {3, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw))));
+        assert(map_equal(dst, map_type({{2, 0}, {4, 0}, {5, 0}}, 0, throw_hasher<Counter<int>>(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct equal
+    {
+        equal() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs == rhs;
+        }
+    };
+    struct hasher
+    {
+        hasher() = default;
+        size_t operator()(const Counter<int>& p) const
+        {
+            return std::hash<Counter<int>>()(p);
+        }
+    };
+    {
+        typedef std::unordered_multimap<Counter<int>, int, std::hash<Counter<int>>, std::equal_to<Counter<int>>> first_map_type;
+        typedef std::unordered_multimap<Counter<int>, int, hasher, equal> second_map_type;
+        typedef std::unordered_map<Counter<int>, int, hasher, equal> third_map_type;
+
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(map_equal(first, {{1, 0}, {2, 0}, {3, 0}, {4, 0}, {2, 0}, {3, 0}, {1, 0}, {3, 0}}));
+            assert(map_equal(second, {}));
+            assert(map_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_map_type first{{1, 0}, {2, 0}, {3, 0}};
+            second_map_type second{{2, 0}, {3, 0}, {4, 0}};
+            third_map_type third{{1, 0}, {3, 0}};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(map_equal(first, {{1, 0}, {2, 0}, {3, 0}, {4, 0}, {2, 0}, {3, 0}, {1, 0}, {3, 0}}));
+            assert(map_equal(second, {}));
+            assert(map_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        std::unordered_multimap<int, int> first;
+        {
+            std::unordered_multimap<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::unordered_map<int, int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.swap/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.swap/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..6220f55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.swap/swap_noexcept.pass.cpp
@@ -0,0 +1,192 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_map>
+
+// void swap(unordered_multimap& c)
+//      noexcept(
+//          (!allocator_type::propagate_on_container_swap::value ||
+//                __is_nothrow_swappable<allocator_type>::value) &&
+//           __is_nothrow_swappable<hasher>::value &&
+//           __is_nothrow_swappable<key_equal>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<allocator_type>::is_always_equal::value &&
+//               __is_nothrow_swappable<hasher>::value &&
+//               __is_nothrow_swappable<key_equal>::value);
+
+// This tests a conforming extension
+
+#include <unordered_map>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash() {}
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+template <class T>
+struct some_hash2
+{
+    typedef T value_type;
+    some_hash2() {}
+    some_hash2(const some_hash2&);
+    std::size_t operator()(T const&) const;
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_hash2<T>&, some_hash2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    typedef std::pair<const MoveOnly, MoveOnly> V;
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<V>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<V>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_multimap<MoveOnly, MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc <V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc2<V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc <V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc <V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc2<V>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc <V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_multimap<MoveOnly, MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc3<V>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.swap/swap_non_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.swap/swap_non_member.pass.cpp
new file mode 100644
index 0000000..8aafbdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.swap/swap_non_member.pass.cpp
@@ -0,0 +1,613 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_map>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multimap
+
+// void swap(unordered_multimap& __u);
+
+#include <unordered_map>
+#include <string>
+#include <set>
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(1), c2.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(2), c2.end(), 2, s);
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(1), c2.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(2), c2.end(), 2, s);
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(1), c2.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(2), c2.end(), 2, s);
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(1), c2.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(2), c2.end(), 2, s);
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(1), c2.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(2), c2.end(), 2, s);
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<std::pair<const int, std::string> > Alloc;
+        typedef std::unordered_multimap<int, std::string, Hash, Compare, Alloc> C;
+        typedef std::pair<int, std::string> P;
+        P a1[] =
+        {
+            P(1, "one"),
+            P(2, "two"),
+            P(3, "three"),
+            P(4, "four"),
+            P(1, "four"),
+            P(2, "four"),
+        };
+        P a2[] =
+        {
+            P(10, "ten"),
+            P(20, "twenty"),
+            P(30, "thirty"),
+            P(40, "forty"),
+            P(50, "fifty"),
+            P(60, "sixty"),
+            P(70, "seventy"),
+            P(80, "eighty"),
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(c1.find(10)->second == "ten");
+        assert(c1.find(20)->second == "twenty");
+        assert(c1.find(30)->second == "thirty");
+        assert(c1.find(40)->second == "forty");
+        assert(c1.find(50)->second == "fifty");
+        assert(c1.find(60)->second == "sixty");
+        assert(c1.find(70)->second == "seventy");
+        assert(c1.find(80)->second == "eighty");
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        std::multiset<std::string> s;
+        s.insert("one");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(1), c2.end(), 1, s);
+        s.insert("two");
+        s.insert("four");
+        CheckConsecutiveKeys<C::const_iterator>(c2.find(2), c2.end(), 2, s);
+        assert(c2.find(3)->second == "three");
+        assert(c2.find(4)->second == "four");
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..6183761
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+//   The container's value type must be the same as the allocator's value type
+
+#include <unordered_set>
+
+int main(int, char**)
+{
+    std::unordered_multiset<int, std::hash<int>, std::less<int>, std::allocator<long> > v;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket.pass.cpp
new file mode 100644
index 0000000..5436c1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type bucket(const key_type& __k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 7);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 7);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket_count.pass.cpp
new file mode 100644
index 0000000..8f389eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket_count.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type bucket_count() const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket_size.pass.cpp
new file mode 100644
index 0000000..be7a651
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/bucket_size.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type bucket_size(size_type n) const
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 7);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 2);
+        LIBCPP_ASSERT(c.bucket_size(2) == 2);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+        LIBCPP_ASSERT(c.bucket_size(5) == 0);
+        LIBCPP_ASSERT(c.bucket_size(6) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 7);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 2);
+        LIBCPP_ASSERT(c.bucket_size(2) == 2);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+        LIBCPP_ASSERT(c.bucket_size(5) == 0);
+        LIBCPP_ASSERT(c.bucket_size(6) == 0);
+    }
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/clear.pass.cpp
new file mode 100644
index 0000000..01ff045
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/clear.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void clear() noexcept;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/contains.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/contains.transparent.pass.cpp
new file mode 100644
index 0000000..b14021c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/contains.transparent.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <typename K>
+// bool contains(const K& x) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<>>;
+      test_transparent_contains<S>({1, 1, 2});
+      test_transparent_contains<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash_final, transparent_equal_final>;
+      test_transparent_contains<S>({1, 1, 2});
+      test_transparent_contains<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_contains<S>({1, 1, 2});
+      test_non_transparent_contains<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<S>({1, 1, 2});
+      test_non_transparent_contains<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<S>({1, 1, 2});
+      test_non_transparent_contains<const S>({1, 1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/count.pass.cpp
new file mode 100644
index 0000000..9feb51c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/count.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type count(const key_type& k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(50) == 3);
+        assert(c.count(5) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(50) == 3);
+        assert(c.count(5) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/count.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/count.transparent.pass.cpp
new file mode 100644
index 0000000..64f9edd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/count.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multiset
+
+// template <typename K>
+// size_type count(const K& k) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<>>;
+      test_transparent_count<S>({1, 1, 2});
+      test_transparent_count<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash_final, transparent_equal_final>;
+      test_transparent_count<S>({1, 1, 2});
+      test_transparent_count<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_count<S>({1, 1, 2});
+      test_non_transparent_count<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<S>({1, 1, 2});
+      test_non_transparent_count<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<S>({1, 1, 2});
+      test_non_transparent_count<const S>({1, 1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/emplace.pass.cpp
new file mode 100644
index 0000000..820b4cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/emplace.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class... Args>
+//     iterator emplace(Args&&... args);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<Emplaceable> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.emplace();
+        assert(c.size() == 1);
+        assert(*r == Emplaceable());
+
+        r = c.emplace(Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+
+        r = c.emplace(5, 6);
+        assert(c.size() == 3);
+        assert(*r == Emplaceable(5, 6));
+    }
+    {
+        typedef std::unordered_multiset<Emplaceable, std::hash<Emplaceable>,
+                      std::equal_to<Emplaceable>, min_allocator<Emplaceable>> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.emplace();
+        assert(c.size() == 1);
+        assert(*r == Emplaceable());
+
+        r = c.emplace(Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+
+        r = c.emplace(5, 6);
+        assert(c.size() == 3);
+        assert(*r == Emplaceable(5, 6));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/emplace_hint.pass.cpp
new file mode 100644
index 0000000..285a13d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/emplace_hint.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator p, Args&&... args);
+
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<Emplaceable> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.emplace_hint(e);
+        assert(c.size() == 1);
+        assert(*r == Emplaceable());
+
+        r = c.emplace_hint(c.end(), Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+
+        r = c.emplace_hint(r, 5, 6);
+        assert(c.size() == 3);
+        assert(*r == Emplaceable(5, 6));
+    }
+    {
+        typedef std::unordered_multiset<Emplaceable, std::hash<Emplaceable>,
+                      std::equal_to<Emplaceable>, min_allocator<Emplaceable>> C;
+        typedef C::iterator R;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.emplace_hint(e);
+        assert(c.size() == 1);
+        assert(*r == Emplaceable());
+
+        r = c.emplace_hint(c.end(), Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+
+        r = c.emplace_hint(r, 5, 6);
+        assert(c.size() == 3);
+        assert(*r == Emplaceable(5, 6));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/empty.pass.cpp
new file mode 100644
index 0000000..078f95f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// bool empty() const noexcept;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_multiset<int> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/empty.verify.cpp
new file mode 100644
index 0000000..547dd81
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::unordered_multiset<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/eq.pass.cpp
new file mode 100644
index 0000000..22d3207
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/eq.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class Hash, class Pred, class Alloc>
+// bool
+// operator==(const unordered_multiset<Key, Hash, Pred, Alloc>& x,
+//            const unordered_multiset<Key, Hash, Pred, Alloc>& y);
+//
+// template <class Key, class Hash, class Pred, class Alloc>
+// bool
+// operator!=(const unordered_multiset<Key, Hash, Pred, Alloc>& x,
+//            const unordered_multiset<Key, Hash, Pred, Alloc>& y);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+        c2.insert(P(90));
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+        c1.insert(P(90));
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+        c2.insert(P(90));
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+        c1.insert(P(90));
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range.transparent.pass.cpp
new file mode 100644
index 0000000..741058d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multiset
+
+// template <typename K>
+// pair<const_iterator, const_iterator> equal_range(const K& k) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<>>;
+      test_transparent_equal_range<S>({1, 1, 2});
+      test_transparent_equal_range<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash_final, transparent_equal_final>;
+      test_transparent_equal_range<S>({1, 1, 2});
+      test_transparent_equal_range<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_equal_range<S>({1, 1, 2});
+      test_non_transparent_equal_range<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<S>({1, 1, 2});
+      test_non_transparent_equal_range<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<S>({1, 1, 2});
+      test_non_transparent_equal_range<const S>({1, 1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range_const.pass.cpp
new file mode 100644
index 0000000..6ef5387
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range_const.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef C::const_iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 3);
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef C::const_iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 3);
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range_non_const.pass.cpp
new file mode 100644
index 0000000..3c70d8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/equal_range_non_const.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// pair<iterator, iterator> equal_range(const key_type& k);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef C::iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 3);
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef C::iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 3);
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+        ++r.first;
+        assert(*r.first == 50);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_const_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_const_iter.pass.cpp
new file mode 100644
index 0000000..2dee501
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_const_iter.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator erase(const_iterator p)
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator==(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+struct Hash { size_t operator() (const TemplateConstructor &) const { return 0; } };
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator i_next = i;
+        ++i_next;
+        C::iterator j = c.erase(i);
+        assert(j == i_next);
+
+        assert(c.size() == 5);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator i_next = i;
+        ++i_next;
+        C::iterator j = c.erase(i);
+        assert(j == i_next);
+        assert(c.size() == 5);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::unordered_set<T, Hash> C;
+        typedef C::iterator I;
+
+        C m;
+        T a{0};
+        I it = m.find(a);
+        if (it != m.end())
+            m.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_if.pass.cpp
new file mode 100644
index 0000000..a7fe88d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_if.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <set>
+
+// template <class T, class Hash, class Compare, class Allocator, class Predicate>
+//   typename unordered_multiset<T, Hash, Compare, Allocator>::size_type
+//   erase_if(unordered_multiset<T, Hash, Compare, Allocator>& c, Predicate pred);
+
+#include <unordered_set>
+#include <algorithm>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+using Init = std::initializer_list<int>;
+
+template <typename M>
+M make (Init vals)
+{
+    M ret;
+    for (int v : vals)
+        ret.insert(v);
+    return ret;
+}
+
+template <typename M, typename Pred>
+void test0(Init vals, Pred p, Init expected, size_t expected_erased_count) {
+  M s = make<M>(vals);
+  ASSERT_SAME_TYPE(typename M::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  M e = make<M>(expected);
+  assert((std::is_permutation(s.begin(), s.end(), e.begin(), e.end())));
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0<S>({}, is1, {}, 0);
+
+    test0<S>({1}, is1, {}, 1);
+    test0<S>({1}, is2, {1}, 0);
+
+    test0<S>({1, 2}, is1, {2}, 1);
+    test0<S>({1, 2}, is2, {1}, 1);
+    test0<S>({1, 2}, is3, {1, 2}, 0);
+    test0<S>({1, 1}, is1, {}, 2);
+    test0<S>({1, 1}, is3, {1, 1}, 0);
+
+    test0<S>({1, 2, 3}, is1, {2, 3}, 1);
+    test0<S>({1, 2, 3}, is2, {1, 3}, 1);
+    test0<S>({1, 2, 3}, is3, {1, 2}, 1);
+    test0<S>({1, 2, 3}, is4, {1, 2, 3}, 0);
+
+    test0<S>({1, 1, 1}, is1, {}, 3);
+    test0<S>({1, 1, 1}, is2, {1, 1, 1}, 0);
+    test0<S>({1, 1, 2}, is1, {2}, 2);
+    test0<S>({1, 1, 2}, is2, {1, 1}, 1);
+    test0<S>({1, 1, 2}, is3, {1, 1, 2}, 0);
+    test0<S>({1, 2, 2}, is1, {2, 2}, 1);
+    test0<S>({1, 2, 2}, is2, {1}, 2);
+    test0<S>({1, 2, 2}, is3, {1, 2, 2}, 0);
+
+    test0<S>({1, 2, 3}, True, {}, 3);
+    test0<S>({1, 2, 3}, False, {1, 2, 3}, 0);
+}
+
+int main(int, char**)
+{
+    test<std::unordered_multiset<int>>();
+    test<std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>>> ();
+    test<std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, test_allocator<int>>> ();
+
+    test<std::unordered_multiset<long>>();
+    test<std::unordered_multiset<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_key.pass.cpp
new file mode 100644
index 0000000..522b6de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_key.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type erase(const key_type& k);
+
+#include <unordered_set>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+template <typename Unordered>
+bool only_deletions ( const Unordered &whole, const Unordered &part ) {
+    typename Unordered::const_iterator w = whole.begin();
+    typename Unordered::const_iterator p = part.begin();
+
+    while ( w != whole.end () && p != part.end()) {
+        if ( *w == *p )
+            p++;
+        w++;
+        }
+
+    return p == part.end();
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 2);
+        assert(c.size() == 4);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 4);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 3);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 3);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 2);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 2);
+        assert(c.size() == 4);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 4);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 3);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 3);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 2);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+    }
+    {
+    typedef std::unordered_multiset<int> C;
+    C m, m2;
+    for ( int i = 0; i < 10; ++i ) {
+        m.insert(i);  m.insert(i);
+        m2.insert(i); m2.insert(i);
+        }
+
+    C::iterator i = m2.begin();
+    int ctr = 0;
+    while (i != m2.end()) {
+        if (ctr++ % 2 == 0)
+            m2.erase(i++);
+        else
+            ++i;
+        }
+
+    assert (only_deletions (m, m2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_range.pass.cpp
new file mode 100644
index 0000000..954d3bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/erase_range.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator erase(const_iterator first, const_iterator last)
+
+#include <unordered_set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i, 2);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(i, j);
+        assert(c.size() == 4);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i, 2);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(i, j);
+        assert(c.size() == 4);
+        assert(c.count(1) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/extract_iterator.pass.cpp
new file mode 100644
index 0000000..153e56d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/extract_iterator.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// node_type extract(const_iterator);
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = *first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.value() == key_value);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using set_type = std::unordered_multiset<int>;
+        set_type m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+    {
+        std::unordered_multiset<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        assert(Counter_base::gConstructed == 6);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/extract_key.pass.cpp
new file mode 100644
index 0000000..3c4de6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/extract_key.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_multiset>
+
+// class unordered_multiset
+
+// node_type extract(key_type const&);
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.value() == *copy);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::unordered_multiset<int> m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::unordered_multiset<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 6+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find.transparent.pass.cpp
new file mode 100644
index 0000000..27abb15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_multiset
+
+// template <typename K>
+// iterator find(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<>>;
+      test_transparent_find<S>({1, 1, 2});
+      test_transparent_find<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash_final, transparent_equal_final>;
+      test_transparent_find<S>({1, 1, 2});
+      test_transparent_find<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_find<S>({1, 1, 2});
+      test_non_transparent_find<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_multiset, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<S>({1, 1, 2});
+      test_non_transparent_find<const S>({1, 1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_multiset, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<S>({1, 1, 2});
+      test_non_transparent_find<const S>({1, 1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find_const.pass.cpp
new file mode 100644
index 0000000..65570dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find_const.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// const_iterator find(const key_type& k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find_non_const.pass.cpp
new file mode 100644
index 0000000..a70109b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/find_non_const.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator find(const key_type& k);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/get_allocator.pass.cpp
new file mode 100644
index 0000000..699565c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/get_allocator.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// allocator_type get_allocator() const
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::unordered_multiset<int> s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>,
+                                      other_allocator<int> > s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/incomplete.pass.cpp
new file mode 100644
index 0000000..a90aa9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/incomplete.pass.cpp
@@ -0,0 +1,41 @@
+
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Check that std::unordered_multiset and its iterators can be instantiated with an incomplete
+// type.
+
+#include <unordered_set>
+
+#include "test_macros.h"
+
+template <class Tp>
+struct MyHash {
+  MyHash() {}
+  std::size_t operator()(Tp const&) const {return 42;}
+};
+
+struct A {
+    typedef std::unordered_multiset<A, MyHash<A> > Map;
+    Map m;
+    Map::iterator it;
+    Map::const_iterator cit;
+    Map::local_iterator lit;
+    Map::const_local_iterator clit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_const_lvalue.pass.cpp
new file mode 100644
index 0000000..6f7c05b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_const_lvalue.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator insert(const value_type& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_const_lvalue_test()
+{
+    typedef Container C;
+    typedef typename C::iterator R;
+    typedef typename C::value_type VT;
+    C c;
+    const VT v1(3.5);
+    R r = c.insert(v1);
+    assert(c.size() == 1);
+    assert(*r == 3.5);
+
+    r = c.insert(v1);
+    assert(c.size() == 2);
+    assert(*r == 3.5);
+
+    const VT v2(4.5);
+    r = c.insert(v2);
+    assert(c.size() == 3);
+    assert(*r == 4.5);
+
+    const VT v3(5.5);
+    r = c.insert(v3);
+    assert(c.size() == 4);
+    assert(*r == 5.5);
+}
+
+int main(int, char**)
+{
+    do_insert_const_lvalue_test<std::unordered_multiset<double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<double, std::hash<double>,
+            std::equal_to<double>, min_allocator<double>> C;
+        do_insert_const_lvalue_test<C>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_emplace_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_emplace_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..c94f27c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_emplace_allocator_requirements.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// insert(...)
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../set_allocator_requirement_test_templates.h"
+
+int main(int, char**)
+{
+  testMultisetInsert<TCT::unordered_multiset<> >();
+  testMultisetEmplace<TCT::unordered_multiset<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..a33cada
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_hint_const_lvalue.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator insert(const_iterator p, const value_type& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_hint_const_lvalue_test()
+{
+    typedef Container C;
+    typedef typename C::iterator R;
+    typedef typename C::value_type VT;
+    C c;
+    typename C::const_iterator e = c.end();
+    const VT v1(3.5);
+    R r = c.insert(e, v1);
+    assert(c.size() == 1);
+    assert(*r == 3.5);
+
+    r = c.insert(r, v1);
+    assert(c.size() == 2);
+    assert(*r == 3.5);
+
+    const VT v2(4.5);
+    r = c.insert(c.end(), v2);
+    assert(c.size() == 3);
+    assert(*r == 4.5);
+
+    const VT v3(5.5);
+    r = c.insert(c.end(), v3);
+    assert(c.size() == 4);
+    assert(*r == 5.5);
+}
+
+int main(int, char**)
+{
+    do_insert_hint_const_lvalue_test<std::unordered_multiset<double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<double, std::hash<double>,
+            std::equal_to<double>, min_allocator<double>> C;
+        do_insert_hint_const_lvalue_test<C>();
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_hint_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_hint_rvalue.pass.cpp
new file mode 100644
index 0000000..ab53024
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_hint_rvalue.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator insert(const_iterator p, value_type&& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<double> C;
+        typedef C::iterator R;
+        typedef double P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(r, P(3.5));
+        assert(c.size() == 2);
+        assert(*r == 3.5);
+
+        r = c.insert(c.end(), P(4.5));
+        assert(c.size() == 3);
+        assert(*r == 4.5);
+
+        r = c.insert(c.end(), P(5.5));
+        assert(c.size() == 4);
+        assert(*r == 5.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        typedef C::iterator R;
+        typedef MoveOnly P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(r, P(3));
+        assert(c.size() == 2);
+        assert(*r == 3);
+
+        r = c.insert(c.end(), P(4));
+        assert(c.size() == 3);
+        assert(*r == 4);
+
+        r = c.insert(c.end(), P(5));
+        assert(c.size() == 4);
+        assert(*r == 5);
+    }
+    {
+        typedef std::unordered_multiset<double, std::hash<double>,
+                                std::equal_to<double>, min_allocator<double>> C;
+        typedef C::iterator R;
+        typedef double P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(r, P(3.5));
+        assert(c.size() == 2);
+        assert(*r == 3.5);
+
+        r = c.insert(c.end(), P(4.5));
+        assert(c.size() == 3);
+        assert(*r == 4.5);
+
+        r = c.insert(c.end(), P(5.5));
+        assert(c.size() == 4);
+        assert(*r == 5.5);
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                            std::equal_to<MoveOnly>, min_allocator<MoveOnly>> C;
+        typedef C::iterator R;
+        typedef MoveOnly P;
+        C c;
+        C::const_iterator e = c.end();
+        R r = c.insert(e, P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(r, P(3));
+        assert(c.size() == 2);
+        assert(*r == 3);
+
+        r = c.insert(c.end(), P(4));
+        assert(c.size() == 3);
+        assert(*r == 4);
+
+        r = c.insert(c.end(), P(5));
+        assert(c.size() == 4);
+        assert(*r == 5);
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_init.pass.cpp
new file mode 100644
index 0000000..d27d0a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_init.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void insert(initializer_list<value_type> il);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        C c;
+        c.insert(
+                    {
+                        P(1),
+                        P(2),
+                        P(3),
+                        P(4),
+                        P(1),
+                        P(2)
+                    }
+                );
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        C c;
+        c.insert(
+                    {
+                        P(1),
+                        P(2),
+                        P(3),
+                        P(4),
+                        P(1),
+                        P(2)
+                    }
+                );
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_node_type.pass.cpp
new file mode 100644
index 0000000..d574277
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_node_type.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// iterator insert(node_type&&);
+
+#include <unordered_set>
+#include <type_traits>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto it = c.insert(key);
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        typename Container::iterator it = c.insert(std::move(node));
+        assert(node.empty());
+        assert(it == c.find(i) && it != c.end());
+        assert(*it == i);
+        assert(node.empty());
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto it = c.insert(std::move(def));
+        assert(def.empty());
+        assert(it == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0);
+        auto it = c.insert(std::move(dupl));
+        assert(*it == 0);
+    }
+
+    assert(c.size() == 11);
+    assert(c.count(0) == 2);
+    for (int i = 1; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_multiset<int> m;
+    test(m);
+    std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..ff1fc98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_node_type_hint.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto it = c.insert(key);
+    return c.extract(it);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(prev + 1 == c.size());
+        assert(*it == i);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_multiset<int> m;
+    test(m);
+    std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_range.pass.cpp
new file mode 100644
index 0000000..f893a9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_range.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     void insert(InputIterator first, InputIterator last);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_rvalue.pass.cpp
new file mode 100644
index 0000000..1696f52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/insert_rvalue.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator insert(value_type&& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<double> C;
+        typedef C::iterator R;
+        typedef double P;
+        C c;
+        R r = c.insert(P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(P(3.5));
+        assert(c.size() == 2);
+        assert(*r == 3.5);
+
+        r = c.insert(P(4.5));
+        assert(c.size() == 3);
+        assert(*r == 4.5);
+
+        r = c.insert(P(5.5));
+        assert(c.size() == 4);
+        assert(*r == 5.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        typedef C::iterator R;
+        typedef MoveOnly P;
+        C c;
+        R r = c.insert(P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(P(3));
+        assert(c.size() == 2);
+        assert(*r == 3);
+
+        r = c.insert(P(4));
+        assert(c.size() == 3);
+        assert(*r == 4);
+
+        r = c.insert(P(5));
+        assert(c.size() == 4);
+        assert(*r == 5);
+    }
+    {
+        typedef std::unordered_multiset<double, std::hash<double>,
+                                std::equal_to<double>, min_allocator<double>> C;
+        typedef C::iterator R;
+        typedef double P;
+        C c;
+        R r = c.insert(P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(P(3.5));
+        assert(c.size() == 2);
+        assert(*r == 3.5);
+
+        r = c.insert(P(4.5));
+        assert(c.size() == 3);
+        assert(*r == 4.5);
+
+        r = c.insert(P(5.5));
+        assert(c.size() == 4);
+        assert(*r == 5.5);
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                            std::equal_to<MoveOnly>, min_allocator<MoveOnly>> C;
+        typedef C::iterator R;
+        typedef MoveOnly P;
+        C c;
+        R r = c.insert(P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(P(3));
+        assert(c.size() == 2);
+        assert(*r == 3);
+
+        r = c.insert(P(4));
+        assert(c.size() == 3);
+        assert(*r == 4);
+
+        r = c.insert(P(5));
+        assert(c.size() == 4);
+        assert(*r == 5);
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..816baa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, local_iterator, const_local_iterator
+
+#include <unordered_set>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+using iterator = std::unordered_multiset<int>::iterator;
+using const_iterator = std::unordered_multiset<int>::const_iterator;
+using local_iterator = std::unordered_multiset<int>::local_iterator;
+using const_local_iterator = std::unordered_multiset<int>::const_local_iterator;
+using value_type = int;
+
+static_assert(std::forward_iterator<iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(std::indirectly_movable<iterator, int*>);
+static_assert(std::indirectly_movable_storable<iterator, int*>);
+static_assert(std::indirectly_copyable<iterator, int*>);
+static_assert(std::indirectly_copyable_storable<iterator, int*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::forward_iterator<const_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(std::indirectly_movable<const_iterator, int*>);
+static_assert(std::indirectly_movable_storable<const_iterator, int*>);
+static_assert(std::indirectly_copyable<const_iterator, int*>);
+static_assert(std::indirectly_copyable_storable<const_iterator, int*>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
+
+static_assert(std::forward_iterator<local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<local_iterator>);
+static_assert(!std::indirectly_writable<local_iterator, value_type>);
+static_assert(std::sentinel_for<local_iterator, local_iterator>);
+static_assert(std::sentinel_for<local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<local_iterator, int*>);
+static_assert(std::indirectly_movable_storable<local_iterator, int*>);
+static_assert(std::indirectly_copyable<local_iterator, int*>);
+static_assert(std::indirectly_copyable_storable<local_iterator, int*>);
+static_assert(!std::indirectly_swappable<local_iterator, local_iterator>);
+
+static_assert(std::forward_iterator<const_local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_local_iterator>);
+static_assert(!std::indirectly_writable<const_local_iterator, value_type>);
+static_assert(std::sentinel_for<const_local_iterator, local_iterator>);
+static_assert(std::sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<const_local_iterator, int*>);
+static_assert(std::indirectly_movable_storable<const_local_iterator, int*>);
+static_assert(std::indirectly_copyable<const_local_iterator, int*>);
+static_assert(std::indirectly_copyable_storable<const_local_iterator, int*>);
+static_assert(!std::indirectly_swappable<const_local_iterator, const_local_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterators.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterators.compile.fail.cpp
new file mode 100644
index 0000000..2c282fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterators.compile.fail.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator       begin()        {return __table_.begin();}
+// iterator       end()          {return __table_.end();}
+// const_iterator begin()  const {return __table_.begin();}
+// const_iterator end()    const {return __table_.end();}
+// const_iterator cbegin() const {return __table_.begin();}
+// const_iterator cend()   const {return __table_.end();}
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        C::iterator i = c.begin();
+        assert(*i == 1);
+        *i = 2;
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterators.pass.cpp
new file mode 100644
index 0000000..2c0cd49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/iterators.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// iterator       begin();
+// iterator       end();
+// const_iterator begin()  const;
+// const_iterator end()    const;
+// const_iterator cbegin() const;
+// const_iterator cend()   const;
+
+#include <unordered_set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::unordered_multiset<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/load_factor.pass.cpp
new file mode 100644
index 0000000..76c8132
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/load_factor.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// float load_factor() const
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/local_iterators.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/local_iterators.compile.fail.cpp
new file mode 100644
index 0000000..d6f1a55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/local_iterators.compile.fail.cpp
@@ -0,0 +1,264 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+        *i = 2;
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/local_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/local_iterators.pass.cpp
new file mode 100644
index 0000000..5d40532
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/local_iterators.pass.cpp
@@ -0,0 +1,502 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 7);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_bucket_count.pass.cpp
new file mode 100644
index 0000000..675101b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_bucket_count.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// size_type max_bucket_count() const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_load_factor.pass.cpp
new file mode 100644
index 0000000..4d6738b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_load_factor.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_size.pass.cpp
new file mode 100644
index 0000000..d08cdb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/max_size.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <type_traits>
+#include <unordered_set>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+      typedef limited_allocator<int, 10> A;
+      typedef std::unordered_multiset<int, std::hash<int>, std::equal_to<int>,
+                                      A>
+          C;
+      C c;
+      assert(c.max_size() <= 10);
+      LIBCPP_ASSERT(c.max_size() == 10);
+    }
+    {
+      typedef limited_allocator<int, (size_t)-1> A;
+      typedef std::unordered_multiset<int, std::hash<int>, std::equal_to<int>,
+                                      A>
+          C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::unordered_multiset<char> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp
new file mode 100644
index 0000000..fc986ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// template <class H2, class P2>
+//   void merge(unordered_set<key_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_set<key_type, H2, P2, allocator_type>&& source);
+// template <class H2, class P2>
+//   void merge(unordered_multiset<key_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_multiset<key_type, H2, P2, allocator_type>&& source);
+
+#include <unordered_set>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Set>
+bool set_equal(const Set& set, Set other)
+{
+    return set == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <class T>
+struct throw_hasher
+{
+    bool& should_throw_;
+
+    throw_hasher(bool& should_throw) : should_throw_(should_throw) {}
+
+    size_t operator()(const T& p) const
+    {
+        if (should_throw_)
+            throw 0;
+        return std::hash<T>()(p);
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::unordered_multiset<int> src{1, 3, 5};
+        std::unordered_multiset<int> dst{2, 4, 5};
+        dst.merge(src);
+        assert(set_equal(src, {}));
+        assert(set_equal(dst, {1, 2, 3, 4, 5, 5}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::unordered_multiset<Counter<int>, throw_hasher<Counter<int>>> set_type;
+        set_type src({1, 3, 5}, 0, throw_hasher<Counter<int>>(do_throw));
+        set_type dst({2, 4, 5}, 0, throw_hasher<Counter<int>>(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(set_equal(src, set_type({1, 3, 5}, 0, throw_hasher<Counter<int>>(do_throw))));
+        assert(set_equal(dst, set_type({2, 4, 5}, 0, throw_hasher<Counter<int>>(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct equal
+    {
+        equal() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs == rhs;
+        }
+    };
+    struct hasher
+    {
+        hasher() = default;
+        size_t operator()(const Counter<int>& p) const { return std::hash<Counter<int>>()(p); }
+    };
+    {
+        typedef std::unordered_multiset<Counter<int>, std::hash<Counter<int>>, std::equal_to<Counter<int>>> first_set_type;
+        typedef std::unordered_multiset<Counter<int>, hasher, equal> second_set_type;
+        typedef std::unordered_set<Counter<int>, hasher, equal> third_set_type;
+
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(set_equal(first, {1, 2, 3, 4, 2, 3, 1, 3}));
+            assert(set_equal(second, {}));
+            assert(set_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(set_equal(first, {1, 2, 3, 4, 2, 3, 1, 3}));
+            assert(set_equal(second, {}));
+            assert(set_equal(third, {}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        std::unordered_multiset<int> first;
+        {
+            std::unordered_multiset<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::unordered_set<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..1a87404
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// unordered_multiset
+
+#include <unordered_set>
+
+#include <concepts>
+#include <ranges>
+
+#include "test_macros.h"
+
+using range = std::unordered_multiset<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::forward_range<range>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::forward_range<range const>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/rehash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/rehash.pass.cpp
new file mode 100644
index 0000000..8c6699b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/rehash.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void rehash(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void rehash_postcondition(const C& c, size_t n)
+{
+    assert(c.bucket_count() >= c.size() / c.max_load_factor() && c.bucket_count() >= n);
+}
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 6);
+    assert(c.count(1) == 2);
+    assert(c.count(2) == 2);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/reserve.pass.cpp
new file mode 100644
index 0000000..54eada5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/reserve.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void reserve(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 6);
+    assert(c.count(1) == 2);
+    assert(c.count(2) == 2);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+}
+
+void reserve_invariant(size_t n) // LWG #2156
+{
+    for (size_t i = 0; i < n; ++i)
+    {
+        std::unordered_multiset<size_t> c;
+        c.reserve(n);
+        size_t buckets = c.bucket_count();
+        for (size_t j = 0; j < i; ++j)
+        {
+            c.insert(i);
+            assert(buckets == c.bucket_count());
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 7);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#endif
+    reserve_invariant(20);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/scary.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/scary.pass.cpp
new file mode 100644
index 0000000..9c9a16c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/scary.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set class unordered_multiset
+
+// Extension:  SCARY/N2913 iterator compatibility between unordered_set and unordered_multiset
+
+#include <unordered_set>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::unordered_set<int> M1;
+    typedef std::unordered_multiset<int> M2;
+    M2::iterator i;
+    M1::iterator j = i;
+    ((void)j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/size.pass.cpp
new file mode 100644
index 0000000..12a4733
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/size.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_multiset
+
+// size_type size() const noexcept;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_multiset<int> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/swap_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/swap_member.pass.cpp
new file mode 100644
index 0000000..59acb07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/swap_member.pass.cpp
@@ -0,0 +1,571 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void swap(unordered_multiset& __u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../test_compare.h"
+#include "../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/types.pass.cpp
new file mode 100644
index 0000000..2c229a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/types.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+// {
+// public:
+//     // types
+//     typedef Value                                                      value_type;
+//     typedef value_type                                                 key_type;
+//     typedef Hash                                                       hasher;
+//     typedef Pred                                                       key_equal;
+//     typedef Alloc                                                      allocator_type;
+//     typedef value_type&                                                reference;
+//     typedef const value_type&                                          const_reference;
+//     typedef typename allocator_traits<allocator_type>::pointer         pointer;
+//     typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
+//     typedef typename allocator_traits<allocator_type>::size_type       size_type;
+//     typedef typename allocator_traits<allocator_type>::difference_type difference_type;
+
+#include <unordered_set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<short> C;
+        static_assert((std::is_same<C::value_type, short>::value), "");
+        static_assert((std::is_same<C::key_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, std::allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, C::value_type*>::value), "");
+        static_assert((std::is_same<C::const_pointer, const C::value_type*>::value), "");
+        static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<short, std::hash<short>,
+                                  std::equal_to<short>, min_allocator<short>> C;
+        static_assert((std::is_same<C::value_type, short>::value), "");
+        static_assert((std::is_same<C::key_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, min_allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, min_pointer<C::value_type>>::value), "");
+        static_assert((std::is_same<C::const_pointer, min_pointer<const C::value_type>>::value), "");
+    //  min_allocator doesn't have a size_type, so one gets synthesized
+        static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/allocator.pass.cpp
new file mode 100644
index 0000000..bb2a9bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/allocator.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// explicit unordered_multiset(const allocator_type& __a);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(test_allocator<NotConstructible>(10));
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == test_allocator<NotConstructible>(10));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(min_allocator<NotConstructible>{});
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == min_allocator<NotConstructible>());
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef NotConstructible T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_multiset<T, HF, Comp, A> C;
+
+        A a(43);
+        C c(3, a);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp ());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef NotConstructible T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_multiset<T, HF, Comp, A> C;
+
+        HF hf(42);
+        A a(43);
+        C c(4, hf, a);
+        LIBCPP_ASSERT(c.bucket_count() == 4);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp ());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..e167c7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset& operator=(const unordered_multiset& u);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_multiset<operator_hijacker> so;
+  std::unordered_multiset<operator_hijacker> s;
+  s = so;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_copy.pass.cpp
new file mode 100644
index 0000000..91aa0f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_copy.pass.cpp
@@ -0,0 +1,191 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset& operator=(const unordered_multiset& u);
+
+#include <unordered_set>
+#include <algorithm>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C *p = &c;
+        c = *p;
+
+        assert(c.size() == 6);
+        assert(std::is_permutation(c.begin(), c.end(), a));
+    }
+    {
+        typedef other_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef min_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_init.pass.cpp
new file mode 100644
index 0000000..b27e535
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_init.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset& operator=(initializer_list<value_type> il);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        C c =   {
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        c =     {
+                    P(1),
+                    P(2),
+                    P(3),
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef min_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        C c =   {
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        c =     {
+                    P(1),
+                    P(2),
+                    P(3),
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_move.pass.cpp
new file mode 100644
index 0000000..32575f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/assign_move.pass.cpp
@@ -0,0 +1,269 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset& operator=(unordered_multiset&& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(10)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef other_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef min_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..24816ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// <unordered_set>
+
+// Check that std::unordered_set fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <unordered_set>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs == rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_multiset<int, std::hash<int>, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/copy.pass.cpp
new file mode 100644
index 0000000..8ae0be0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/copy.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(const unordered_multiset& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   other_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            other_allocator<int>(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == other_allocator<int>(-2));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/copy_alloc.pass.cpp
new file mode 100644
index 0000000..5c920b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/copy_alloc.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(const unordered_multiset& u, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C c(c0, test_allocator<int>(5));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(5));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C c(c0, min_allocator<int>());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp
new file mode 100644
index 0000000..16dd268
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// template<class InputIterator,
+//        class Hash = hash<iter-value-type<InputIterator>>,
+//        class Pred = equal_to<iter-value-type<InputIterator>>,
+//        class Allocator = allocator<iter-value-type<InputIterator>>>
+// unordered_multiset(InputIterator, InputIterator, typename see below::size_type = see below,
+//                    Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multiset<iter-value-type<InputIterator>,
+//                         Hash, Pred, Allocator>;
+//
+// template<class T, class Hash = hash<T>,
+//        class Pred = equal_to<T>, class Allocator = allocator<T>>
+// unordered_multiset(initializer_list<T>, typename see below::size_type = see below,
+//                    Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multiset<T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multiset(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_multiset<iter-value-type<InputIterator>,
+//                         hash<iter-value-type<InputIterator>>,
+//                         equal_to<iter-value-type<InputIterator>>,
+//                         Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_multiset(InputIterator, InputIterator, typename see below::size_type,
+//                    Hash, Allocator)
+//   -> unordered_multiset<iter-value-type<InputIterator>, Hash,
+//                         equal_to<iter-value-type<InputIterator>>,
+//                         Allocator>;
+//
+// template<class T, class Allocator>
+// unordered_multiset(initializer_list<T>, typename see below::size_type, Allocator)
+//   -> unordered_multiset<T, hash<T>, equal_to<T>, Allocator>;
+//
+// template<class T, class Hash, class Allocator>
+// unordered_multiset(initializer_list<T>, typename see below::size_type, Hash, Allocator)
+//   -> unordered_multiset<T, Hash, equal_to<T>, Allocator>;
+
+#include <functional>
+#include <unordered_set>
+
+int main(int, char**)
+{
+    {
+        // cannot deduce Key from nothing
+        std::unordered_multiset s;
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Size)
+        std::unordered_multiset s(42);
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash)
+        std::unordered_multiset s(42, std::hash<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred)
+        std::unordered_multiset s(42, std::hash<int>(), std::equal_to<>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred, Allocator)
+        std::unordered_multiset s(42, std::hash<int>(), std::equal_to<>(), std::allocator<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Allocator)
+        std::unordered_multiset s(std::allocator<int>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Allocator)
+        std::unordered_multiset s(42, std::allocator<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Allocator)
+        std::unordered_multiset s(42, std::hash<short>(), std::allocator<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_multiset'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.pass.cpp
new file mode 100644
index 0000000..912a6d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// template<class InputIterator,
+//        class Hash = hash<iter-value-type<InputIterator>>,
+//        class Pred = equal_to<iter-value-type<InputIterator>>,
+//        class Allocator = allocator<iter-value-type<InputIterator>>>
+// unordered_multiset(InputIterator, InputIterator, typename see below::size_type = see below,
+//                    Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multiset<iter-value-type<InputIterator>,
+//                         Hash, Pred, Allocator>;
+//
+// template<class T, class Hash = hash<T>,
+//        class Pred = equal_to<T>, class Allocator = allocator<T>>
+// unordered_multiset(initializer_list<T>, typename see below::size_type = see below,
+//                    Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_multiset<T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_multiset(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_multiset<iter-value-type<InputIterator>,
+//                         hash<iter-value-type<InputIterator>>,
+//                         equal_to<iter-value-type<InputIterator>>,
+//                         Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_multiset(InputIterator, InputIterator, typename see below::size_type,
+//                    Hash, Allocator)
+//   -> unordered_multiset<iter-value-type<InputIterator>, Hash,
+//                         equal_to<iter-value-type<InputIterator>>,
+//                         Allocator>;
+//
+// template<class T, class Allocator>
+// unordered_multiset(initializer_list<T>, typename see below::size_type, Allocator)
+//   -> unordered_multiset<T, hash<T>, equal_to<T>, Allocator>;
+//
+// template<class T, class Hash, class Allocator>
+// unordered_multiset(initializer_list<T>, typename see below::size_type, Hash, Allocator)
+//   -> unordered_multiset<T, Hash, equal_to<T>, Allocator>;
+
+#include <algorithm> // is_permutation
+#include <cassert>
+#include <climits> // INT_MAX
+#include <type_traits>
+#include <unordered_set>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    const int expected_s[] = {1, 1, 2, 3, INT_MAX};
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_multiset s(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_multiset s(std::begin(arr), std::end(arr), 42);
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_multiset s(std::begin(arr), std::end(arr), 42, std::hash<long long>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_multiset s(std::begin(arr), std::end(arr), 42, std::hash<long long>(), test_allocator<int>(0, 40));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 40);
+    }
+
+    {
+    std::unordered_multiset<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_multiset s(source);
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    }
+
+    {
+    std::unordered_multiset<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_multiset s{source};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    }
+
+    {
+    std::unordered_multiset<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_multiset s(source, test_allocator<int>(0, 41));
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    assert(s.get_allocator().get_id() == 41);
+    }
+
+    {
+    std::unordered_multiset<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_multiset s{source, test_allocator<int>(0, 42)};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    assert(s.get_allocator().get_id() == 42);
+    }
+
+    {
+    std::unordered_multiset s{ 1, 2, 1, INT_MAX, 3 };
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_multiset s({ 1, 2, 1, INT_MAX, 3 }, 42);
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_multiset s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_multiset s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>(), std::equal_to<>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>, std::equal_to<>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_multiset s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>(), std::equal_to<>(), test_allocator<int>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>, std::equal_to<>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 43);
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_multiset s(std::begin(arr), std::end(arr), 42, test_allocator<int>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 44);
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_multiset s(std::begin(arr), std::end(arr), 42, std::hash<long long>(), test_allocator<int>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 44);
+    }
+
+    {
+    std::unordered_multiset s({ 1, 2, 1, INT_MAX, 3 }, 42, test_allocator<int>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<int>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 43);
+    }
+
+    {
+    std::unordered_multiset s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>(), test_allocator<int>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_multiset<int, std::hash<long long>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 42);
+    }
+
+    UnorderedContainerDeductionGuidesSfinaeAway<std::unordered_multiset, std::unordered_multiset<int>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/default.pass.cpp
new file mode 100644
index 0000000..00d8c6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/default.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset();
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<NotConstructible> A;
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        {
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == A());
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+        {
+        A a;
+        C c(a);
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+    }
+    {
+        std::unordered_multiset<int> c = {};
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/default_noexcept.pass.cpp
new file mode 100644
index 0000000..1c64692
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/default_noexcept.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// unordered_multiset()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "../../../test_hash.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..41f68c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/dtor_noexcept.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// ~unordered_multiset() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    ~some_hash() noexcept(false);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/hash_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/hash_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..1f2ee87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/hash_copy_constructible.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// <unordered_set>
+
+// Check that std::unordered_multiset fails to instantiate if the hash function is
+// not copy-constructible. This is mentioned in LWG issue 2436
+
+#include <unordered_set>
+
+template <class T>
+struct Hash {
+    std::size_t operator () (const T& lhs) const { return 0; }
+
+    Hash () {}
+private:
+    Hash (const Hash &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_multiset<int, Hash<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init.pass.cpp
new file mode 100644
index 0000000..bd5cef7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> il);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c = {
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c = {
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            };
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_multiset<T, HF, Comp, A> C;
+
+        A a(42);
+        C c({
+                T(1),
+                T(2),
+                T(3),
+                T(4),
+                T(1),
+                T(2)
+            }, 12, a);
+
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_multiset<T, HF, Comp, A> C;
+
+        A a(42);
+        HF hf(43);
+        C c({
+                T(1),
+                T(2),
+                T(3),
+                T(4),
+                T(1),
+                T(2)
+            }, 12, hf, a);
+
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size.pass.cpp
new file mode 100644
index 0000000..80123b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> il, size_type n);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_allocator.pass.cpp
new file mode 100644
index 0000000..4551de8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_allocator.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> init, size_type n, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multiset<int,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    C c({
+            1,
+            2,
+            3,
+            4,
+            1,
+            2
+        },
+        7,
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+    assert(c.count(1) == 2);
+    assert(c.count(2) == 2);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash.pass.cpp
new file mode 100644
index 0000000..ae8ef8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> il, size_type n,
+//               const hasher& hf);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..01e51b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_allocator.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> init, size_type n,
+//                    const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multiset<int,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    C c({
+            1,
+            2,
+            3,
+            4,
+            1,
+            2
+        },
+        7,
+        test_hash<int>(5),
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+    assert(c.count(1) == 2);
+    assert(c.count(2) == 2);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..ee10f31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_equal.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..9ca37e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/init_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter.pass.cpp
new file mode 100644
index 0000000..5fe3a02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter.pass.cpp
@@ -0,0 +1,171 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_multiset<T, HF, Comp, A> C;
+        T arr[] =
+        {
+            T(1),
+            T(2),
+            T(3),
+            T(4),
+            T(1),
+            T(2)
+        };
+        A a(42);
+        C c(cpp17_input_iterator<T*>(arr), cpp17_input_iterator<T*>(arr + sizeof(arr)/sizeof(arr[0])), 12, a);
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_multiset<T, HF, Comp, A> C;
+        T arr[] =
+        {
+            T(1),
+            T(2),
+            T(3),
+            T(4),
+            T(1),
+            T(2)
+        };
+        HF hf(43);
+        A a(42);
+        C c(cpp17_input_iterator<T*>(arr), cpp17_input_iterator<T*>(arr + sizeof(arr)/sizeof(arr[0])), 16, hf, a);
+        assert(c.bucket_count() >= 16);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size.pass.cpp
new file mode 100644
index 0000000..4ce70a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last, size_type n);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_allocator.pass.cpp
new file mode 100644
index 0000000..3d9509e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_allocator.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last, size_type n,
+//                        const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multiset<int,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    int a[] =
+    {
+        1,
+        2,
+        3,
+        4,
+        1,
+        2
+    };
+    C c(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + sizeof(a)/sizeof(a[0])),
+        7,
+        alloc
+        );
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+    assert(c.count(1) == 2);
+    assert(c.count(2) == 2);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash.pass.cpp
new file mode 100644
index 0000000..7db30cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..34341b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_allocator.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last, size_type n,
+//                        const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multiset<int,
+                                    test_hash<int>,
+                                    test_equal_to<int>,
+                                    Allocator> C;
+    int a[] =
+    {
+        1,
+        2,
+        3,
+        4,
+        1,
+        2
+    };
+    C c(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + sizeof(a)/sizeof(a[0])),
+        7,
+        test_hash<int>(5),
+        alloc
+        );
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 6);
+    assert(c.count(1) == 2);
+    assert(c.count(2) == 2);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..dd2c09a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_equal.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..996ebb8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// template <class InputIterator>
+//     unordered_multiset(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql,
+//                   const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..9df029e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move.addressof.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(unordered_multiset&& u);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_multiset<operator_hijacker> so;
+  std::unordered_multiset<operator_hijacker> s(std::move(so));
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move.pass.cpp
new file mode 100644
index 0000000..4d4881b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(unordered_multiset&& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_alloc.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_alloc.addressof.compile.pass.cpp
new file mode 100644
index 0000000..cd1f70e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_alloc.addressof.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  using A = test_allocator<operator_hijacker>;
+  using H = std::hash<operator_hijacker>;
+  using P = std::equal_to<operator_hijacker>;
+
+  const A a;
+  std::unordered_multiset<operator_hijacker, H, P, A> so;
+  std::unordered_multiset<operator_hijacker, H, P, A> s(std::move(so), a);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_alloc.pass.cpp
new file mode 100644
index 0000000..a2b6c3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_alloc.pass.cpp
@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(unordered_multiset&& u, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../check_consecutive.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int P;
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(12));
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        CheckConsecutiveValues<C::const_iterator>(c.find(1), c.end(), 1, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(2), c.end(), 2, 2);
+        CheckConsecutiveValues<C::const_iterator>(c.find(3), c.end(), 3, 1);
+        CheckConsecutiveValues<C::const_iterator>(c.find(4), c.end(), 4, 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(12));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef int P;
+        typedef test_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(10));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef int P;
+        typedef min_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(std::move(c0), A());
+        assert(c.bucket_count() >= 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef int P;
+        typedef min_allocator<int> A;
+        typedef std::unordered_multiset<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(std::move(c0), A());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 6);
+        assert(c.count(1) == 2);
+        assert(c.count(2) == 2);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..9dbca6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_assign_noexcept.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// unordered_multiset& operator=(unordered_multiset&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    some_hash& operator=(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_noexcept.pass.cpp
new file mode 100644
index 0000000..8e6e464
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/move_noexcept.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// unordered_multiset(unordered_multiset&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size.compile.fail.cpp
new file mode 100644
index 0000000..bd41c6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size.compile.fail.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// explicit unordered_multiset(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size.pass.cpp
new file mode 100644
index 0000000..8d40f47
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// explicit unordered_multiset(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_allocator.pass.cpp
new file mode 100644
index 0000000..2855487
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_allocator.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(size_type n, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multiset<NotConstructible,
+                                    test_hash<NotConstructible>,
+                                    test_equal_to<NotConstructible>,
+                                    Allocator> C;
+    C c(7, alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>());
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<NotConstructible>(10));
+    test(min_allocator<NotConstructible>());
+    test(explicit_allocator<NotConstructible>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash.pass.cpp
new file mode 100644
index 0000000..58f84df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(size_type n, const hasher& hf);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..2c20093
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_allocator.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(size_type n, const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_multiset<NotConstructible,
+                                    test_hash<NotConstructible>,
+                                    test_equal_to<NotConstructible>,
+                                    Allocator> C;
+    C c(7, test_hash<NotConstructible>(5), alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>(5));
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<NotConstructible>(10));
+    test(min_allocator<NotConstructible>());
+    test(explicit_allocator<NotConstructible>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_equal.pass.cpp
new file mode 100644
index 0000000..3e6130a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_equal.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(size_type n, const hasher& hf, const key_equal& eql);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..c64fb8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// unordered_multiset(size_type n, const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            test_allocator<std::pair<const NotConstructible, NotConstructible> >(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (test_allocator<NotConstructible>(10)));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_multiset<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            min_allocator<std::pair<const NotConstructible, NotConstructible> >()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..057e5bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_noexcept.pass.cpp
@@ -0,0 +1,191 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// void swap(unordered_multiset& c)
+//      noexcept(
+//          (!allocator_type::propagate_on_container_swap::value ||
+//           __is_nothrow_swappable<allocator_type>::value) &&
+//           __is_nothrow_swappable<hasher>::value &&
+//           __is_nothrow_swappable<key_equal>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//               noexcept(swap(declval<Hash&>(), declval<Hash&>())) &&
+//               noexcept(swap(declval<Pred&>(), declval<Pred&>())));
+
+// This tests a conforming extension
+
+#include <unordered_set>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash() {}
+    some_hash(const some_hash&);
+    std::size_t operator()(const T&) const { return 0; }
+};
+
+template <class T>
+struct some_hash2
+{
+    typedef T value_type;
+    some_hash2() {}
+    some_hash2(const some_hash2&);
+    std::size_t operator()(const T&) const { return 0; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_hash2<T>&, some_hash2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_multiset<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_multiset<MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc3<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_non_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_non_member.pass.cpp
new file mode 100644
index 0000000..3b8aad2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.multiset/unord.multiset.swap/swap_non_member.pass.cpp
@@ -0,0 +1,579 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_multiset
+
+// void swap(unordered_multiset& x, unordered_multiset& y);
+
+#include <unordered_set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_multiset<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 6);
+        assert(c2.size() == 6);
+        assert(c2.count(1) == 2);
+        assert(c2.count(2) == 2);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/allocator_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/allocator_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..0d1341e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/allocator_mismatch.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+//   The container's value type must be the same as the allocator's value type
+
+#include <unordered_set>
+
+int main(int, char**)
+{
+    std::unordered_set<int, std::hash<int>, std::less<int>, std::allocator<long> > v;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket.pass.cpp
new file mode 100644
index 0000000..bcaa77b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type bucket(const key_type& __k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 5);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        size_t bc = c.bucket_count();
+        assert(bc >= 5);
+        for (size_t i = 0; i < 13; ++i)
+            LIBCPP_ASSERT(c.bucket(i) == i % bc);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket_count.pass.cpp
new file mode 100644
index 0000000..3a1a78c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket_count.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type bucket_count() const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket_size.pass.cpp
new file mode 100644
index 0000000..1016c49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/bucket_size.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type bucket_size(size_type n) const
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 5);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 1);
+        LIBCPP_ASSERT(c.bucket_size(2) == 1);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.bucket_count() >= 5);
+        LIBCPP_ASSERT(c.bucket_size(0) == 0);
+        LIBCPP_ASSERT(c.bucket_size(1) == 1);
+        LIBCPP_ASSERT(c.bucket_size(2) == 1);
+        LIBCPP_ASSERT(c.bucket_size(3) == 1);
+        LIBCPP_ASSERT(c.bucket_size(4) == 1);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/clear.pass.cpp
new file mode 100644
index 0000000..ab04cdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/clear.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void clear() noexcept;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        ASSERT_NOEXCEPT(c.clear());
+        c.clear();
+        assert(c.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/contains.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/contains.pass.cpp
new file mode 100644
index 0000000..c9b7836
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/contains.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <unordered_set>
+
+// <unordered_set>
+
+// bool contains(const key_type& x) const;
+
+template <typename T, typename V, typename B, typename... Vals>
+void test(B bad, Vals... args) {
+    T set;
+    V vals[] = {args...};
+
+    for (auto& v : vals) set.insert(v);
+    for (auto& v : vals) assert(set.contains(v));
+
+    assert(!set.contains(bad));
+}
+
+struct E { int a = 1; double b = 1; char c = 1; };
+
+int main(int, char**)
+{
+    {
+        test<std::unordered_set<int>, int>(14, 10, 11, 12, 13);
+        test<std::unordered_set<char>, char>('e', 'a', 'b', 'c', 'd');
+    }
+    {
+        test<std::unordered_multiset<int>, int>(14, 10, 11, 12, 13);
+        test<std::unordered_multiset<char>, char>('e', 'a', 'b', 'c', 'd');
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/contains.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/contains.transparent.pass.cpp
new file mode 100644
index 0000000..7890805
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/contains.transparent.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <typename K>
+// bool contains(const K& x) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<>>;
+      test_transparent_contains<S>({1, 2});
+      test_transparent_contains<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash_final, transparent_equal_final>;
+      test_transparent_contains<S>({1, 2});
+      test_transparent_contains<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_contains<S>({1, 2});
+      test_non_transparent_contains<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<S>({1, 2});
+      test_non_transparent_contains<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_contains<S>({1, 2});
+      test_non_transparent_contains<const S>({1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/count.pass.cpp
new file mode 100644
index 0000000..fc9fce5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/count.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type count(const key_type& k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(50) == 1);
+        assert(c.count(5) == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(c.count(30) == 1);
+        assert(c.count(50) == 1);
+        assert(c.count(5) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/count.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/count.transparent.pass.cpp
new file mode 100644
index 0000000..32af0a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/count.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_set
+
+// template <typename K>
+// size_type count(const K& k) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<>>;
+      test_transparent_count<S>({1, 2});
+      test_transparent_count<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash_final, transparent_equal_final>;
+      test_transparent_count<S>({1, 2});
+      test_transparent_count<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_count<S>({1, 2});
+      test_non_transparent_count<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<S>({1, 2});
+      test_non_transparent_count<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_count<S>({1, 2});
+      test_non_transparent_count<const S>({1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace.pass.cpp
new file mode 100644
index 0000000..c247b0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class... Args>
+//     pair<iterator, bool> emplace(Args&&... args);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<Emplaceable> C;
+        typedef std::pair<C::iterator, bool> R;
+        C c;
+        R r = c.emplace();
+        assert(c.size() == 1);
+        assert(*r.first == Emplaceable());
+        assert(r.second);
+
+        r = c.emplace(Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r.first == Emplaceable(5, 6));
+        assert(r.second);
+
+        r = c.emplace(5, 6);
+        assert(c.size() == 2);
+        assert(*r.first == Emplaceable(5, 6));
+        assert(!r.second);
+    }
+    {
+        typedef std::unordered_set<Emplaceable, std::hash<Emplaceable>,
+                      std::equal_to<Emplaceable>, min_allocator<Emplaceable>> C;
+        typedef std::pair<C::iterator, bool> R;
+        C c;
+        R r = c.emplace();
+        assert(c.size() == 1);
+        assert(*r.first == Emplaceable());
+        assert(r.second);
+
+        r = c.emplace(Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r.first == Emplaceable(5, 6));
+        assert(r.second);
+
+        r = c.emplace(5, 6);
+        assert(c.size() == 2);
+        assert(*r.first == Emplaceable(5, 6));
+        assert(!r.second);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace_hint.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace_hint.addressof.compile.pass.cpp
new file mode 100644
index 0000000..af6e37e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace_hint.addressof.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator p, Args&&... args);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_set<operator_hijacker> s;
+  s.emplace_hint(s.cbegin());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace_hint.pass.cpp
new file mode 100644
index 0000000..a078a5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/emplace_hint.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class... Args>
+//     iterator emplace_hint(const_iterator p, Args&&... args);
+
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../Emplaceable.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<Emplaceable> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.emplace_hint(c.end());
+        assert(c.size() == 1);
+        assert(*r == Emplaceable());
+
+        r = c.emplace_hint(c.end(), Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+
+        r = c.emplace_hint(r, 5, 6);
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+    }
+    {
+        typedef std::unordered_set<Emplaceable, std::hash<Emplaceable>,
+                      std::equal_to<Emplaceable>, min_allocator<Emplaceable>> C;
+        typedef C::iterator R;
+        C c;
+        R r = c.emplace_hint(c.end());
+        assert(c.size() == 1);
+        assert(*r == Emplaceable());
+
+        r = c.emplace_hint(c.end(), Emplaceable(5, 6));
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+
+        r = c.emplace_hint(r, 5, 6);
+        assert(c.size() == 2);
+        assert(*r == Emplaceable(5, 6));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/empty.pass.cpp
new file mode 100644
index 0000000..ce9cfdc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/empty.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set
+
+// bool empty() const noexcept;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_set<int> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.empty());
+    assert(m.empty());
+    m.insert(M::value_type(1));
+    assert(!m.empty());
+    m.clear();
+    assert(m.empty());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/empty.verify.cpp
new file mode 100644
index 0000000..4a739a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::unordered_set<int> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/eq.pass.cpp
new file mode 100644
index 0000000..a0ea30f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/eq.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class Hash, class Pred, class Alloc>
+// bool
+// operator==(const unordered_set<Key, Hash, Pred, Alloc>& x,
+//            const unordered_set<Key, Hash, Pred, Alloc>& y);
+//
+// template <class Key, class Hash, class Pred, class Alloc>
+// bool
+// operator!=(const unordered_set<Key, Hash, Pred, Alloc>& x,
+//            const unordered_set<Key, Hash, Pred, Alloc>& y);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+        c2.insert(P(90));
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+        c1.insert(P(90));
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2;
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c1(std::begin(a), std::end(a));
+        const C c2 = c1;
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a), std::end(a));
+        C c2 = c1;
+        c2.rehash(30);
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+        c2.insert(P(90));
+        assert(!(c1 == c2));
+        assert( (c1 != c2));
+        c1.insert(P(90));
+        assert( (c1 == c2));
+        assert(!(c1 != c2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range.transparent.pass.cpp
new file mode 100644
index 0000000..9844d83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_set
+
+// template <typename K>
+// pair<iterator, iterator> equal_range(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<>>;
+      test_transparent_equal_range<S>({1, 2});
+      test_transparent_equal_range<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash_final, transparent_equal_final>;
+      test_transparent_equal_range<S>({1, 2});
+      test_transparent_equal_range<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_equal_range<S>({1, 2});
+      test_non_transparent_equal_range<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<S>({1, 2});
+      test_non_transparent_equal_range<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_equal_range<S>({1, 2});
+      test_non_transparent_equal_range<const S>({1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range_const.pass.cpp
new file mode 100644
index 0000000..707b372
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range_const.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef C::const_iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 50);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef C::const_iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 50);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range_non_const.pass.cpp
new file mode 100644
index 0000000..a2872fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/equal_range_non_const.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// pair<iterator, iterator> equal_range(const key_type& k);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef C::iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 50);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef C::iterator I;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(50),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        std::pair<I, I> r = c.equal_range(30);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 30);
+        r = c.equal_range(5);
+        assert(std::distance(r.first, r.second) == 0);
+        r = c.equal_range(50);
+        assert(std::distance(r.first, r.second) == 1);
+        assert(*r.first == 50);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_const_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_const_iter.pass.cpp
new file mode 100644
index 0000000..cc70913
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_const_iter.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator erase(const_iterator p)
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct TemplateConstructor
+{
+    template<typename T>
+    TemplateConstructor (const T&) {}
+};
+
+bool operator==(const TemplateConstructor&, const TemplateConstructor&) { return false; }
+struct Hash { size_t operator() (const TemplateConstructor &) const { return 0; } };
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator i_next = i;
+        ++i_next;
+        C::iterator j = c.erase(i);
+        assert(j == i_next);
+
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator i_next = i;
+        ++i_next;
+        C::iterator j = c.erase(i);
+        assert(j == i_next);
+
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+    //  This is LWG #2059
+        typedef TemplateConstructor T;
+        typedef std::unordered_set<T, Hash> C;
+        typedef C::iterator I;
+
+        C m;
+        T a{0};
+        I it = m.find(a);
+        if (it != m.end())
+            m.erase(it);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_if.pass.cpp
new file mode 100644
index 0000000..a2c7325
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_if.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <unordered_set>
+
+// template <class T, class Hash, class Compare, class Allocator, class Predicate>
+//   typename unordered_set<T, Hash, Compare, Allocator>::size_type
+//   erase_if(unordered_set<T, Hash, Compare, Allocator>& c, Predicate pred);
+
+#include <unordered_set>
+#include <algorithm>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+using Init = std::initializer_list<int>;
+
+template <typename M>
+M make (Init vals)
+{
+    M ret;
+    for (int v : vals)
+        ret.insert(v);
+    return ret;
+}
+
+template <typename M, typename Pred>
+void test0(Init vals, Pred p, Init expected, size_t expected_erased_count) {
+  M s = make<M>(vals);
+  ASSERT_SAME_TYPE(typename M::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  M e = make<M>(expected);
+  assert((std::is_permutation(s.begin(), s.end(), e.begin(), e.end())));
+}
+
+template <typename S>
+void test()
+{
+    auto is1 = [](auto v) { return v == 1;};
+    auto is2 = [](auto v) { return v == 2;};
+    auto is3 = [](auto v) { return v == 3;};
+    auto is4 = [](auto v) { return v == 4;};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0<S>({}, is1, {}, 0);
+
+    test0<S>({1}, is1, {}, 1);
+    test0<S>({1}, is2, {1}, 0);
+
+    test0<S>({1, 2}, is1, {2}, 1);
+    test0<S>({1, 2}, is2, {1}, 1);
+    test0<S>({1, 2}, is3, {1, 2}, 0);
+
+    test0<S>({1, 2, 3}, is1, {2, 3}, 1);
+    test0<S>({1, 2, 3}, is2, {1, 3}, 1);
+    test0<S>({1, 2, 3}, is3, {1, 2}, 1);
+    test0<S>({1, 2, 3}, is4, {1, 2, 3}, 0);
+
+    test0<S>({1, 2, 3}, True, {}, 3);
+    test0<S>({1, 2, 3}, False, {1, 2, 3}, 0);
+}
+
+int main(int, char**)
+{
+    test<std::unordered_set<int>>();
+    test<std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>>> ();
+    test<std::unordered_set<int, std::hash<int>, std::equal_to<int>, test_allocator<int>>> ();
+
+    test<std::unordered_set<long>>();
+    test<std::unordered_set<double>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_key.pass.cpp
new file mode 100644
index 0000000..a50f56b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_key.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type erase(const key_type& k);
+
+#include <unordered_set>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+template <typename Unordered>
+bool only_deletions ( const Unordered &whole, const Unordered &part ) {
+    typename Unordered::const_iterator w = whole.begin();
+    typename Unordered::const_iterator p = part.begin();
+
+    while ( w != whole.end () && p != part.end()) {
+        if ( *w == *p )
+            p++;
+        w++;
+        }
+
+    return p == part.end();
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 1);
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 2);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 2);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 1);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.erase(5) == 0);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 1);
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(2) == 0);
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        assert(c.erase(4) == 1);
+        assert(c.size() == 2);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(4) == 0);
+        assert(c.size() == 2);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 1);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(1) == 0);
+        assert(c.size() == 1);
+        assert(c.count(3) == 1);
+
+        assert(c.erase(3) == 1);
+        assert(c.size() == 0);
+
+        assert(c.erase(3) == 0);
+        assert(c.size() == 0);
+    }
+    {
+    typedef std::unordered_set<int> C;
+    C m, m2;
+    for ( int i = 0; i < 10; ++i ) {
+        m.insert(i);
+        m2.insert(i);
+        }
+
+    C::iterator i = m2.begin();
+    int ctr = 0;
+    while (i != m2.end()) {
+        if (ctr++ % 2 == 0)
+            m2.erase(i++);
+        else
+            ++i;
+        }
+
+    assert (only_deletions (m, m2));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_range.pass.cpp
new file mode 100644
index 0000000..8e0110a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/erase_range.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator erase(const_iterator first, const_iterator last)
+
+#include <unordered_set>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(i, j);
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C::const_iterator i = c.find(2);
+        C::const_iterator j = std::next(i);
+        C::iterator k = c.erase(i, i);
+        assert(k == i);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(i, j);
+        assert(c.size() == 3);
+        assert(c.count(1) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+
+        k = c.erase(c.cbegin(), c.cend());
+        assert(c.size() == 0);
+        assert(k == c.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/extract_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/extract_iterator.pass.cpp
new file mode 100644
index 0000000..d4a0a7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/extract_iterator.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_set
+
+// node_type extract(const_iterator);
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container>
+void test(Container& c)
+{
+    size_t sz = c.size();
+
+    for (auto first = c.cbegin(); first != c.cend();)
+    {
+        auto key_value = *first;
+        typename Container::node_type t = c.extract(first++);
+        --sz;
+        assert(t.value() == key_value);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+}
+
+int main(int, char**)
+{
+    {
+        using set_type = std::unordered_set<int>;
+        set_type m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+    {
+        std::unordered_set<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        assert(Counter_base::gConstructed == 6);
+        test(m);
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        test(m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/extract_key.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/extract_key.pass.cpp
new file mode 100644
index 0000000..e0d4856
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/extract_key.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_set
+
+// node_type extract(key_type const&);
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "Counter.h"
+
+template <class Container, class KeyTypeIter>
+void test(Container& c, KeyTypeIter first, KeyTypeIter last)
+{
+    size_t sz = c.size();
+    assert((size_t)std::distance(first, last) == sz);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(!t.empty());
+        --sz;
+        assert(t.value() == *copy);
+        assert(t.get_allocator() == c.get_allocator());
+        assert(sz == c.size());
+    }
+
+    assert(c.size() == 0);
+
+    for (KeyTypeIter copy = first; copy != last; ++copy)
+    {
+        typename Container::node_type t = c.extract(*copy);
+        assert(t.empty());
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::unordered_set<int> m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+    {
+        std::unordered_set<Counter<int>> m = {1, 2, 3, 4, 5, 6};
+        {
+            Counter<int> keys[] = {1, 2, 3, 4, 5, 6};
+            assert(Counter_base::gConstructed == 6+6);
+            test(m, std::begin(keys), std::end(keys));
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+
+    {
+        using min_alloc_set = std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>>;
+        min_alloc_set m = {1, 2, 3, 4, 5, 6};
+        int keys[] = {1, 2, 3, 4, 5, 6};
+        test(m, std::begin(keys), std::end(keys));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find.transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find.transparent.pass.cpp
new file mode 100644
index 0000000..7510dd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find.transparent.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
+//           class Alloc = allocator<pair<const Key, T>>>
+// class unordered_set
+
+// template <typename K>
+// iterator find(const K& k);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <unordered_set>
+
+#include "test_transparent_unordered.h"
+
+int main(int, char**)
+{
+    using key_type = StoredType<int>;
+
+    {
+      // Make sure conversions don't happen for transparent non-final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<>>;
+      test_transparent_find<S>({1, 2});
+      test_transparent_find<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions don't happen for transparent final hasher and key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash_final, transparent_equal_final>;
+      test_transparent_find<S>({1, 2});
+      test_transparent_find<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent hasher
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<>>;
+      test_non_transparent_find<S>({1, 2});
+      test_non_transparent_find<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for non-transparent key_equal
+      using S = unord_set_type<std::unordered_set, transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<S>({1, 2});
+      test_non_transparent_find<const S>({1, 2});
+    }
+
+    {
+      // Make sure conversions do happen for both non-transparent hasher and key_equal
+      using S = unord_set_type<std::unordered_set, non_transparent_hash, std::equal_to<key_type>>;
+      test_non_transparent_find<S>({1, 2});
+      test_non_transparent_find<const S>({1, 2});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find_const.pass.cpp
new file mode 100644
index 0000000..96d1787
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find_const.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// const_iterator find(const key_type& k) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        C::const_iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find_non_const.pass.cpp
new file mode 100644
index 0000000..d49efd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/find_non_const.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator find(const key_type& k);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c(std::begin(a), std::end(a));
+        C::iterator i = c.find(30);
+        assert(*i == 30);
+        i = c.find(5);
+        assert(i == c.cend());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/get_allocator.pass.cpp
new file mode 100644
index 0000000..1b0a652
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/get_allocator.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set
+
+// allocator_type get_allocator() const
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::allocator<int> alloc;
+        const std::unordered_set<int> s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+    {
+        other_allocator<int> alloc(1);
+        const std::unordered_set<int, std::hash<int>,
+                                 std::equal_to<int>,
+                                 other_allocator<int> > s(alloc);
+        assert(s.get_allocator() == alloc);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/incomplete.pass.cpp
new file mode 100644
index 0000000..d87d080
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/incomplete.pass.cpp
@@ -0,0 +1,41 @@
+
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// Check that std::unordered_set and its iterators can be instantiated with an incomplete
+// type.
+
+#include <unordered_set>
+
+#include "test_macros.h"
+
+template <class Tp>
+struct MyHash {
+  MyHash() {}
+  std::size_t operator()(Tp const&) const {return 42;}
+};
+
+struct A {
+    typedef std::unordered_set<A, MyHash<A> > Map;
+    Map m;
+    Map::iterator it;
+    Map::const_iterator cit;
+    Map::local_iterator lit;
+    Map::const_local_iterator clit;
+};
+
+inline bool operator==(A const& L, A const& R) { return &L == &R; }
+
+int main(int, char**) {
+    A a;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_and_emplace_allocator_requirements.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_and_emplace_allocator_requirements.pass.cpp
new file mode 100644
index 0000000..0ca0e93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_and_emplace_allocator_requirements.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set
+
+// insert(...)
+// emplace(...)
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "container_test_types.h"
+#include "../../set_allocator_requirement_test_templates.h"
+
+
+int main(int, char**)
+{
+  testSetInsert<TCT::unordered_set<> >();
+  testSetEmplace<TCT::unordered_set<> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_const_lvalue.pass.cpp
new file mode 100644
index 0000000..a0f5ed6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_const_lvalue.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// pair<iterator, bool> insert(const value_type& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_const_lvalue_test()
+{
+    typedef Container C;
+    typedef std::pair<typename C::iterator, bool> R;
+    typedef typename C::value_type VT;
+    C c;
+    const VT v1(3.5);
+    R r = c.insert(v1);
+    assert(c.size() == 1);
+    assert(*r.first == 3.5);
+    assert(r.second);
+
+    r = c.insert(v1);
+    assert(c.size() == 1);
+    assert(*r.first == 3.5);
+    assert(!r.second);
+
+    const VT v2(4.5);
+    r = c.insert(v2);
+    assert(c.size() == 2);
+    assert(*r.first == 4.5);
+    assert(r.second);
+
+    const VT v3(5.5);
+    r = c.insert(v3);
+    assert(c.size() == 3);
+    assert(*r.first == 5.5);
+    assert(r.second);
+}
+
+int main(int, char**)
+{
+    do_insert_const_lvalue_test<std::unordered_set<double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<double, std::hash<double>,
+                                std::equal_to<double>, min_allocator<double>> C;
+        do_insert_const_lvalue_test<C>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_const_lvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_const_lvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..f83f28f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_const_lvalue.addressof.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator insert(const_iterator p, const value_type& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_set<operator_hijacker> s;
+  const operator_hijacker v;
+  s.insert(s.cbegin(), v);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_const_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_const_lvalue.pass.cpp
new file mode 100644
index 0000000..16a9766
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_const_lvalue.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator insert(const_iterator p, const value_type& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template<class Container>
+void do_insert_hint_const_lvalue_test()
+{
+    typedef Container C;
+    typedef typename C::iterator R;
+    typedef typename C::value_type VT;
+    C c;
+    typename C::const_iterator e = c.end();
+    const VT v1(3.5);
+    R r = c.insert(e, v1);
+    assert(c.size() == 1);
+    assert(*r == 3.5);
+
+    r = c.insert(r, v1);
+    assert(c.size() == 1);
+    assert(*r == 3.5);
+
+    const VT v2(4.5);
+    r = c.insert(c.end(), v2);
+    assert(c.size() == 2);
+    assert(*r == 4.5);
+
+    const VT v3(5.5);
+    r = c.insert(c.end(), v3);
+    assert(c.size() == 3);
+    assert(*r == 5.5);
+}
+
+int main(int, char**)
+{
+    do_insert_hint_const_lvalue_test<std::unordered_set<double> >();
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<double, std::hash<double>,
+                                std::equal_to<double>, min_allocator<double>> C;
+        do_insert_hint_const_lvalue_test<C>();
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_rvalue.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_rvalue.addressof.compile.pass.cpp
new file mode 100644
index 0000000..333c673
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_rvalue.addressof.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator insert(const_iterator p, value_type&& x);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_set<operator_hijacker> s;
+  s.insert(s.cbegin(), operator_hijacker());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_rvalue.pass.cpp
new file mode 100644
index 0000000..de67a91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_hint_rvalue.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator insert(const_iterator p, value_type&& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<double> C;
+        typedef C::iterator R;
+        typedef double P;
+        C c;
+        typename C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(r, P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(c.end(), P(4.5));
+        assert(c.size() == 2);
+        assert(*r == 4.5);
+
+        r = c.insert(c.end(), P(5.5));
+        assert(c.size() == 3);
+        assert(*r == 5.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        typedef C::iterator R;
+        typedef MoveOnly P;
+        C c;
+        typename C::const_iterator e = c.end();
+        R r = c.insert(e, P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(r, P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(c.end(), P(4));
+        assert(c.size() == 2);
+        assert(*r == 4);
+
+        r = c.insert(c.end(), P(5));
+        assert(c.size() == 3);
+        assert(*r == 5);
+    }
+    {
+        typedef std::unordered_set<double, std::hash<double>,
+                                std::equal_to<double>, min_allocator<double>> C;
+        typedef C::iterator R;
+        typedef double P;
+        C c;
+        typename C::const_iterator e = c.end();
+        R r = c.insert(e, P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(r, P(3.5));
+        assert(c.size() == 1);
+        assert(*r == 3.5);
+
+        r = c.insert(c.end(), P(4.5));
+        assert(c.size() == 2);
+        assert(*r == 4.5);
+
+        r = c.insert(c.end(), P(5.5));
+        assert(c.size() == 3);
+        assert(*r == 5.5);
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                            std::equal_to<MoveOnly>, min_allocator<MoveOnly>> C;
+        typedef C::iterator R;
+        typedef MoveOnly P;
+        C c;
+        typename C::const_iterator e = c.end();
+        R r = c.insert(e, P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(r, P(3));
+        assert(c.size() == 1);
+        assert(*r == 3);
+
+        r = c.insert(c.end(), P(4));
+        assert(c.size() == 2);
+        assert(*r == 4);
+
+        r = c.insert(c.end(), P(5));
+        assert(c.size() == 3);
+        assert(*r == 5);
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_init.pass.cpp
new file mode 100644
index 0000000..63331ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_init.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void insert(initializer_list<value_type> il);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        C c;
+        c.insert(
+                    {
+                        P(1),
+                        P(2),
+                        P(3),
+                        P(4),
+                        P(1),
+                        P(2)
+                    }
+                );
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        C c;
+        c.insert(
+                    {
+                        P(1),
+                        P(2),
+                        P(3),
+                        P(4),
+                        P(1),
+                        P(2)
+                    }
+                );
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_node_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_node_type.pass.cpp
new file mode 100644
index 0000000..a4ae313
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_node_type.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_set
+
+// insert_return_type insert(node_type&&);
+
+#include <unordered_set>
+#include <type_traits>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto p = c.insert(key);
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        typename Container::insert_return_type irt = c.insert(std::move(node));
+        assert(node.empty());
+        assert(irt.inserted);
+        assert(irt.node.empty());
+        assert(*irt.position == i);
+    }
+
+    assert(c.size() == 10);
+
+    { // Insert empty node.
+        typename Container::node_type def;
+        auto irt = c.insert(std::move(def));
+        assert(def.empty());
+        assert(!irt.inserted);
+        assert(irt.node.empty());
+        assert(irt.position == c.end());
+    }
+
+    { // Insert duplicate node.
+        typename Container::node_type dupl = nf(0);
+        auto irt = c.insert(std::move(dupl));
+        assert(dupl.empty());
+        assert(!irt.inserted);
+        assert(!irt.node.empty());
+        assert(irt.position == c.find(0));
+        assert(irt.node.value() == 0);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_set<int> m;
+    test(m);
+    std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_node_type_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_node_type_hint.pass.cpp
new file mode 100644
index 0000000..3bb7d4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_node_type_hint.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_set
+
+// iterator insert(const_iterator hint, node_type&&);
+
+#include <unordered_set>
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class Container>
+typename Container::node_type
+node_factory(typename Container::key_type const& key)
+{
+    static Container c;
+    auto p = c.insert(key);
+    assert(p.second);
+    return c.extract(p.first);
+}
+
+template <class Container>
+void test(Container& c)
+{
+    auto* nf = &node_factory<Container>;
+
+    for (int i = 0; i != 10; ++i)
+    {
+        typename Container::node_type node = nf(i);
+        assert(!node.empty());
+        size_t prev = c.size();
+        auto it = c.insert(c.end(), std::move(node));
+        assert(node.empty());
+        assert(prev + 1 == c.size());
+        assert(*it == i);
+    }
+
+    assert(c.size() == 10);
+
+    for (int i = 0; i != 10; ++i)
+    {
+        assert(c.count(i) == 1);
+    }
+}
+
+int main(int, char**)
+{
+    std::unordered_set<int> m;
+    test(m);
+    std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> m2;
+    test(m2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_range.pass.cpp
new file mode 100644
index 0000000..451ee67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_range.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     void insert(InputIterator first, InputIterator last);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c;
+        c.insert(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_rvalue.pass.cpp
new file mode 100644
index 0000000..9edab27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/insert_rvalue.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// pair<iterator, bool> insert(value_type&& x);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<double> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef double P;
+        C c;
+        R r = c.insert(P(3.5));
+        assert(c.size() == 1);
+        assert(*r.first == 3.5);
+        assert(r.second);
+
+        r = c.insert(P(3.5));
+        assert(c.size() == 1);
+        assert(*r.first == 3.5);
+        assert(!r.second);
+
+        r = c.insert(P(4.5));
+        assert(c.size() == 2);
+        assert(*r.first == 4.5);
+        assert(r.second);
+
+        r = c.insert(P(5.5));
+        assert(c.size() == 3);
+        assert(*r.first == 5.5);
+        assert(r.second);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef MoveOnly P;
+        C c;
+        R r = c.insert(P(3));
+        assert(c.size() == 1);
+        assert(*r.first == 3);
+        assert(r.second);
+
+        r = c.insert(P(3));
+        assert(c.size() == 1);
+        assert(*r.first == 3);
+        assert(!r.second);
+
+        r = c.insert(P(4));
+        assert(c.size() == 2);
+        assert(*r.first == 4);
+        assert(r.second);
+
+        r = c.insert(P(5));
+        assert(c.size() == 3);
+        assert(*r.first == 5);
+        assert(r.second);
+    }
+    {
+        typedef std::unordered_set<double, std::hash<double>,
+                                std::equal_to<double>, min_allocator<double>> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef double P;
+        C c;
+        R r = c.insert(P(3.5));
+        assert(c.size() == 1);
+        assert(*r.first == 3.5);
+        assert(r.second);
+
+        r = c.insert(P(3.5));
+        assert(c.size() == 1);
+        assert(*r.first == 3.5);
+        assert(!r.second);
+
+        r = c.insert(P(4.5));
+        assert(c.size() == 2);
+        assert(*r.first == 4.5);
+        assert(r.second);
+
+        r = c.insert(P(5.5));
+        assert(c.size() == 3);
+        assert(*r.first == 5.5);
+        assert(r.second);
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                            std::equal_to<MoveOnly>, min_allocator<MoveOnly>> C;
+        typedef std::pair<C::iterator, bool> R;
+        typedef MoveOnly P;
+        C c;
+        R r = c.insert(P(3));
+        assert(c.size() == 1);
+        assert(*r.first == 3);
+        assert(r.second);
+
+        r = c.insert(P(3));
+        assert(c.size() == 1);
+        assert(*r.first == 3);
+        assert(!r.second);
+
+        r = c.insert(P(4));
+        assert(c.size() == 2);
+        assert(*r.first == 4);
+        assert(r.second);
+
+        r = c.insert(P(5));
+        assert(c.size() == 3);
+        assert(*r.first == 5);
+        assert(r.second);
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterator.operators.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterator.operators.addressof.compile.pass.cpp
new file mode 100644
index 0000000..457172d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterator.operators.addressof.compile.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+
+// class unordered_set
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+template <class ToIterator, class FromIterator>
+void test() {
+  FromIterator from;
+  ToIterator copy(from);
+  copy = from;
+
+  ToIterator move(std::move(from));
+  from = FromIterator();
+  move = std::move(from);
+}
+
+void test() {
+  {
+    using I = std::unordered_set<operator_hijacker>::iterator;
+    using CI = std::unordered_set<operator_hijacker>::const_iterator;
+    test<I, I>();
+    test<CI, I>();
+    test<CI, CI>();
+  }
+  {
+    using IL = std::unordered_set<operator_hijacker>::local_iterator;
+    using CIL = std::unordered_set<operator_hijacker>::const_local_iterator;
+    test<IL, IL>();
+    test<CIL, IL>();
+    test<CIL, CIL>();
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..70490c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, local_iterator, const_local_iterator
+
+#include <unordered_set>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+using iterator = std::unordered_set<int>::iterator;
+using const_iterator = std::unordered_set<int>::const_iterator;
+using local_iterator = std::unordered_set<int>::local_iterator;
+using const_local_iterator = std::unordered_set<int>::const_local_iterator;
+using value_type = int;
+
+static_assert(std::forward_iterator<iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(std::indirectly_movable<iterator, int*>);
+static_assert(std::indirectly_movable_storable<iterator, int*>);
+static_assert(std::indirectly_copyable<iterator, int*>);
+static_assert(std::indirectly_copyable_storable<iterator, int*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::forward_iterator<const_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(std::indirectly_movable<const_iterator, int*>);
+static_assert(std::indirectly_movable_storable<const_iterator, int*>);
+static_assert(std::indirectly_copyable<const_iterator, int*>);
+static_assert(std::indirectly_copyable_storable<const_iterator, int*>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
+
+static_assert(std::forward_iterator<local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<local_iterator>);
+static_assert(std::sentinel_for<local_iterator, local_iterator>);
+static_assert(std::sentinel_for<local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<local_iterator, int*>);
+static_assert(std::indirectly_movable_storable<local_iterator, int*>);
+static_assert(std::indirectly_copyable<local_iterator, int*>);
+static_assert(std::indirectly_copyable_storable<local_iterator, int*>);
+static_assert(!std::indirectly_swappable<local_iterator, local_iterator>);
+
+static_assert(std::forward_iterator<const_local_iterator>);
+LIBCPP_STATIC_ASSERT(!std::bidirectional_iterator<const_local_iterator>);
+static_assert(!std::indirectly_writable<const_local_iterator, value_type>);
+static_assert(std::sentinel_for<const_local_iterator, local_iterator>);
+static_assert(std::sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, local_iterator>);
+static_assert(!std::sized_sentinel_for<const_local_iterator, const_local_iterator>);
+static_assert(std::indirectly_movable<const_local_iterator, int*>);
+static_assert(std::indirectly_movable_storable<const_local_iterator, int*>);
+static_assert(std::indirectly_copyable<const_local_iterator, int*>);
+static_assert(std::indirectly_copyable_storable<const_local_iterator, int*>);
+static_assert(!std::indirectly_swappable<const_local_iterator, const_local_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterators.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterators.compile.fail.cpp
new file mode 100644
index 0000000..de5f88e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterators.compile.fail.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator       begin()        {return __table_.begin();}
+// iterator       end()          {return __table_.end();}
+// const_iterator begin()  const {return __table_.begin();}
+// const_iterator end()    const {return __table_.end();}
+// const_iterator cbegin() const {return __table_.begin();}
+// const_iterator cend()   const {return __table_.end();}
+
+#include <unordered_set>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 6);
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+        C::iterator i = c.begin();
+        assert(*i == 1);
+        *i = 2;
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 6);
+        assert(std::distance(c.begin(), c.end()) == c.size());
+        assert(std::distance(c.cbegin(), c.cend()) == c.size());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterators.pass.cpp
new file mode 100644
index 0000000..eb84591
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/iterators.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// iterator       begin()        {return __table_.begin();}
+// iterator       end()          {return __table_.end();}
+// const_iterator begin()  const {return __table_.begin();}
+// const_iterator end()    const {return __table_.end();}
+// const_iterator cbegin() const {return __table_.begin();}
+// const_iterator cend()   const {return __table_.end();}
+
+#include <unordered_set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::iterator i;
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        C::const_iterator i;
+    }
+#endif
+#if TEST_STD_VER > 11
+    { // N3644 testing
+        typedef std::unordered_set<int> C;
+        C::iterator ii1{}, ii2{};
+        C::iterator ii4 = ii1;
+        C::const_iterator cii{};
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/load_factor.pass.cpp
new file mode 100644
index 0000000..0952a4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/load_factor.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// float load_factor() const
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        const C c(std::begin(a), std::end(a));
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        assert(c.load_factor() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/local_iterators.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/local_iterators.compile.fail.cpp
new file mode 100644
index 0000000..7bacd2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/local_iterators.compile.fail.cpp
@@ -0,0 +1,262 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_set>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+        *i = 2;
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 1);
+        ++i;
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 2);
+        assert(*i == 2);
+        ++i;
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+
+        b = c.bucket(5);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(6);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/local_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/local_iterators.pass.cpp
new file mode 100644
index 0000000..adc0164
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/local_iterators.pass.cpp
@@ -0,0 +1,390 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// local_iterator       begin (size_type n);
+// local_iterator       end   (size_type n);
+// const_local_iterator begin (size_type n) const;
+// const_local_iterator end   (size_type n) const;
+// const_local_iterator cbegin(size_type n) const;
+// const_local_iterator cend  (size_type n) const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.begin(b);
+        I j = c.end(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.begin(b);
+        j = c.end(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        typedef C::const_local_iterator I;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        const C c(a, a + sizeof(a)/sizeof(a[0]));
+        assert(c.bucket_count() >= 5);
+        C::size_type b = c.bucket(0);
+        I i = c.cbegin(b);
+        I j = c.cend(b);
+        assert(std::distance(i, j) == 0);
+
+        b = c.bucket(1);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 1);
+
+        b = c.bucket(2);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 2);
+
+        b = c.bucket(3);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 3);
+
+        b = c.bucket(4);
+        i = c.cbegin(b);
+        j = c.cend(b);
+        assert(std::distance(i, j) == 1);
+        assert(*i == 4);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_bucket_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_bucket_count.pass.cpp
new file mode 100644
index 0000000..c830f44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_bucket_count.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// size_type max_bucket_count() const;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        assert(c.max_bucket_count() > 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_load_factor.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_load_factor.pass.cpp
new file mode 100644
index 0000000..9951956
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_load_factor.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// float max_load_factor() const;
+// void max_load_factor(float mlf);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        const C c;
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        C c;
+        assert(c.max_load_factor() == 1);
+        c.max_load_factor(2.5);
+        assert(c.max_load_factor() == 2.5);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_size.pass.cpp
new file mode 100644
index 0000000..aeb1354
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/max_size.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set
+
+// size_type max_size() const;
+
+#include <cassert>
+#include <limits>
+#include <type_traits>
+#include <unordered_set>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+      typedef limited_allocator<int, 10> A;
+      typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, A> C;
+      C c;
+      assert(c.max_size() <= 10);
+      LIBCPP_ASSERT(c.max_size() == 10);
+    }
+    {
+      typedef limited_allocator<int, (size_t)-1> A;
+      typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, A> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      LIBCPP_ASSERT(c.max_size() == max_dist);
+    }
+    {
+      typedef std::unordered_set<char> C;
+      const C::size_type max_dist =
+          static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
+      C c;
+      assert(c.max_size() <= max_dist);
+      assert(c.max_size() <= alloc_max_size(c.get_allocator()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp
new file mode 100644
index 0000000..ef06ca8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// class unordered_set
+
+// template <class H2, class P2>
+//   void merge(unordered_set<key_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_set<key_type, H2, P2, allocator_type>&& source);
+// template <class H2, class P2>
+//   void merge(unordered_multiset<key_type, H2, P2, allocator_type>& source);
+// template <class H2, class P2>
+//   void merge(unordered_multiset<key_type, H2, P2, allocator_type>&& source);
+
+#include <unordered_set>
+#include <cassert>
+#include "test_macros.h"
+#include "Counter.h"
+
+template <class Set>
+bool set_equal(const Set& set, Set other)
+{
+    return set == other;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <class T>
+struct throw_hasher
+{
+    bool& should_throw_;
+
+    throw_hasher(bool& should_throw) : should_throw_(should_throw) {}
+
+    size_t operator()(const T& p) const
+    {
+        if (should_throw_)
+            throw 0;
+        return std::hash<T>()(p);
+    }
+};
+#endif
+
+int main(int, char**)
+{
+    {
+        std::unordered_set<int> src{1, 3, 5};
+        std::unordered_set<int> dst{2, 4, 5};
+        dst.merge(src);
+        assert(set_equal(src, {5}));
+        assert(set_equal(dst, {1, 2, 3, 4, 5}));
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        bool do_throw = false;
+        typedef std::unordered_set<Counter<int>, throw_hasher<Counter<int>>> set_type;
+        set_type src({1, 3, 5}, 0, throw_hasher<Counter<int>>(do_throw));
+        set_type dst({2, 4, 5}, 0, throw_hasher<Counter<int>>(do_throw));
+
+        assert(Counter_base::gConstructed == 6);
+
+        do_throw = true;
+        try
+        {
+            dst.merge(src);
+        }
+        catch (int)
+        {
+            do_throw = false;
+        }
+        assert(!do_throw);
+        assert(set_equal(src, set_type({1, 3, 5}, 0, throw_hasher<Counter<int>>(do_throw))));
+        assert(set_equal(dst, set_type({2, 4, 5}, 0, throw_hasher<Counter<int>>(do_throw))));
+    }
+#endif
+    assert(Counter_base::gConstructed == 0);
+    struct equal
+    {
+        equal() = default;
+
+        bool operator()(const Counter<int>& lhs, const Counter<int>& rhs) const
+        {
+            return lhs == rhs;
+        }
+    };
+    struct hasher
+    {
+        hasher() = default;
+        size_t operator()(const Counter<int>& p) const { return std::hash<Counter<int>>()(p); }
+    };
+    {
+        typedef std::unordered_set<Counter<int>, std::hash<Counter<int>>, std::equal_to<Counter<int>>> first_set_type;
+        typedef std::unordered_set<Counter<int>, hasher, equal> second_set_type;
+        typedef std::unordered_multiset<Counter<int>, hasher, equal> third_set_type;
+
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(second);
+            first.merge(third);
+
+            assert(set_equal(first, {1, 2, 3, 4}));
+            assert(set_equal(second, {2, 3}));
+            assert(set_equal(third, {1, 3}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+        {
+            first_set_type first{1, 2, 3};
+            second_set_type second{2, 3, 4};
+            third_set_type third{1, 3};
+
+            assert(Counter_base::gConstructed == 8);
+
+            first.merge(std::move(second));
+            first.merge(std::move(third));
+
+            assert(set_equal(first, {1, 2, 3, 4}));
+            assert(set_equal(second, {2, 3}));
+            assert(set_equal(third, {1, 3}));
+
+            assert(Counter_base::gConstructed == 8);
+        }
+        assert(Counter_base::gConstructed == 0);
+    }
+    {
+        std::unordered_set<int> first;
+        {
+            std::unordered_set<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+        {
+            std::unordered_multiset<int> second;
+            first.merge(second);
+            first.merge(std::move(second));
+        }
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..1094e5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// unordered_multiset
+
+#include <unordered_set>
+
+#include <concepts>
+#include <ranges>
+
+#include "test_macros.h"
+
+using range = std::unordered_set<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::forward_range<range>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range>);
+static_assert(!std::ranges::view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(!std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::const_iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::forward_range<range const>);
+LIBCPP_STATIC_ASSERT(!std::ranges::bidirectional_range<range const>);
+static_assert(!std::ranges::view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(!std::ranges::borrowed_range<range const>);
+static_assert(!std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/rehash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/rehash.pass.cpp
new file mode 100644
index 0000000..e45327a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/rehash.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void rehash(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void rehash_postcondition(const C& c, size_t n)
+{
+    assert(c.bucket_count() >= c.size() / c.max_load_factor() && c.bucket_count() >= n);
+}
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 4);
+    assert(c.count(1) == 1);
+    assert(c.count(2) == 1);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.rehash(3);
+        rehash_postcondition(c, 3);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        test(c);
+        c.rehash(31);
+        rehash_postcondition(c, 31);
+        LIBCPP_ASSERT(c.bucket_count() == 31);
+        test(c);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/reserve.pass.cpp
new file mode 100644
index 0000000..7ea358e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/reserve.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void reserve(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class C>
+void test(const C& c)
+{
+    assert(c.size() == 4);
+    assert(c.count(1) == 1);
+    assert(c.count(2) == 1);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+}
+
+void reserve_invariant(size_t n) // LWG #2156
+{
+    for (size_t i = 0; i < n; ++i)
+    {
+        std::unordered_set<size_t> c;
+        c.reserve(n);
+        size_t buckets = c.bucket_count();
+        for (size_t j = 0; j < i; ++j)
+        {
+            c.insert(i);
+            assert(buckets == c.bucket_count());
+        }
+    }
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        assert(c.bucket_count() >= 2);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int, std::hash<int>,
+                                      std::equal_to<int>, min_allocator<int>> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        test(c);
+        assert(c.bucket_count() >= 5);
+        c.reserve(3);
+        LIBCPP_ASSERT(c.bucket_count() == 5);
+        test(c);
+        c.max_load_factor(2);
+        c.reserve(3);
+        assert(c.bucket_count() >= 2);
+        test(c);
+        c.reserve(31);
+        assert(c.bucket_count() >= 16);
+        test(c);
+    }
+#endif
+    reserve_invariant(20);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/size.pass.cpp
new file mode 100644
index 0000000..f7967fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/size.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// class unordered_set
+
+// size_type size() const noexcept;
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::unordered_set<int> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> M;
+    M m;
+    ASSERT_NOEXCEPT(m.size());
+    assert(m.size() == 0);
+    m.insert(M::value_type(2));
+    assert(m.size() == 1);
+    m.insert(M::value_type(1));
+    assert(m.size() == 2);
+    m.insert(M::value_type(3));
+    assert(m.size() == 3);
+    m.erase(m.begin());
+    assert(m.size() == 2);
+    m.erase(m.begin());
+    assert(m.size() == 1);
+    m.erase(m.begin());
+    assert(m.size() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/swap_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/swap_member.pass.cpp
new file mode 100644
index 0000000..d5adfbb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/swap_member.pass.cpp
@@ -0,0 +1,571 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void swap(unordered_set& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../test_compare.h"
+#include "../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        c1.swap(c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/types.pass.cpp
new file mode 100644
index 0000000..8d5a22f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/types.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+// {
+// public:
+//     // types
+//     typedef Value                                                      value_type;
+//     typedef value_type                                                 key_type;
+//     typedef Hash                                                       hasher;
+//     typedef Pred                                                       key_equal;
+//     typedef Alloc                                                      allocator_type;
+//     typedef value_type&                                                reference;
+//     typedef const value_type&                                          const_reference;
+//     typedef typename allocator_traits<allocator_type>::pointer         pointer;
+//     typedef typename allocator_traits<allocator_type>::const_pointer   const_pointer;
+//     typedef typename allocator_traits<allocator_type>::size_type       size_type;
+//     typedef typename allocator_traits<allocator_type>::difference_type difference_type;
+
+#include <unordered_set>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<short> C;
+        static_assert((std::is_same<C::value_type, short>::value), "");
+        static_assert((std::is_same<C::key_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, std::allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, C::value_type*>::value), "");
+        static_assert((std::is_same<C::const_pointer, const C::value_type*>::value), "");
+        static_assert((std::is_same<C::size_type, std::size_t>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<short, std::hash<short>,
+                                  std::equal_to<short>, min_allocator<short>> C;
+        static_assert((std::is_same<C::value_type, short>::value), "");
+        static_assert((std::is_same<C::key_type, short>::value), "");
+        static_assert((std::is_same<C::hasher, std::hash<C::key_type> >::value), "");
+        static_assert((std::is_same<C::key_equal, std::equal_to<C::key_type> >::value), "");
+        static_assert((std::is_same<C::allocator_type, min_allocator<C::value_type> >::value), "");
+        static_assert((std::is_same<C::reference, C::value_type&>::value), "");
+        static_assert((std::is_same<C::const_reference, const C::value_type&>::value), "");
+        static_assert((std::is_same<C::pointer, min_pointer<C::value_type>>::value), "");
+        static_assert((std::is_same<C::const_pointer, min_pointer<const C::value_type>>::value), "");
+    //  min_allocator doesn't have a size_type, so one gets synthesized
+        static_assert((std::is_same<C::size_type, std::make_unsigned<C::difference_type>::type>::value), "");
+        static_assert((std::is_same<C::difference_type, std::ptrdiff_t>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/allocator.pass.cpp
new file mode 100644
index 0000000..7c7ce3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/allocator.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// explicit unordered_set(const allocator_type& __a);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(test_allocator<NotConstructible>(10));
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == test_allocator<NotConstructible>(10));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(min_allocator<NotConstructible>{});
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == min_allocator<NotConstructible>());
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef NotConstructible T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_set<T, HF, Comp, A> C;
+
+        A a(43);
+        C c(3, a);
+        LIBCPP_ASSERT(c.bucket_count() == 3);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp ());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef NotConstructible T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_set<T, HF, Comp, A> C;
+
+        HF hf(42);
+        A a(43);
+        C c(4, hf, a);
+        LIBCPP_ASSERT(c.bucket_count() == 4);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp ());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_copy.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_copy.addressof.compile.pass.cpp
new file mode 100644
index 0000000..de2784e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_copy.addressof.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set& operator=(const unordered_set& u);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_set<operator_hijacker> so;
+  std::unordered_set<operator_hijacker> s;
+  s = so;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_copy.pass.cpp
new file mode 100644
index 0000000..74b3b07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_copy.pass.cpp
@@ -0,0 +1,189 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set& operator=(const unordered_set& u);
+
+#include <unordered_set>
+#include <algorithm>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int> C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(a, a + sizeof(a)/sizeof(a[0]));
+        C *p = &c;
+        c = *p;
+        assert(c.size() == 4);
+        assert(std::is_permutation(c.begin(), c.end(), a));
+    }
+    {
+        typedef other_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = c0;
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef min_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_init.pass.cpp
new file mode 100644
index 0000000..cc35d51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_init.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set& operator=(initializer_list<value_type> il);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        C c =   {
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        c =     {
+                    P(1),
+                    P(2),
+                    P(3),
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef min_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        C c =   {
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        c =     {
+                    P(1),
+                    P(2),
+                    P(3),
+                    P(4),
+                    P(1),
+                    P(2)
+                };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_move.pass.cpp
new file mode 100644
index 0000000..b1ec876
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/assign_move.pass.cpp
@@ -0,0 +1,221 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set& operator=(unordered_set&& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(4));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef test_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(10)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef other_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A(4)
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+    {
+        typedef min_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(a, a + 2,
+            7,
+            test_hash<int>(2),
+            test_equal_to<int>(3),
+            A()
+           );
+        C::iterator it0 = c0.begin();
+        c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+        assert(it0 == c.begin()); // Iterators remain valid
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/compare_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/compare_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..0325862
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/compare_copy_constructible.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// <unordered_set>
+
+// Check that std::unordered_set fails to instantiate if the comparison predicate is
+// not copy-constructible. This is LWG issue 2436
+
+#include <unordered_set>
+
+template <class T>
+struct Comp {
+    bool operator () (const T& lhs, const T& rhs) const { return lhs == rhs; }
+
+    Comp () {}
+private:
+    Comp (const Comp &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_set<int, std::hash<int>, Comp<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/copy.pass.cpp
new file mode 100644
index 0000000..8a67595
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/copy.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(const unordered_set& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   other_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            other_allocator<int>(10)
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == other_allocator<int>(-2));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C c = c0;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/copy_alloc.pass.cpp
new file mode 100644
index 0000000..09d22de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/copy_alloc.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(const unordered_set& u, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C c(c0, test_allocator<int>(5));
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(5));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C c(c0, min_allocator<int>());
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp
new file mode 100644
index 0000000..d608281
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// template<class InputIterator,
+//        class Hash = hash<iter-value-type<InputIterator>>,
+//        class Pred = equal_to<iter-value-type<InputIterator>>,
+//        class Allocator = allocator<iter-value-type<InputIterator>>>
+// unordered_set(InputIterator, InputIterator, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_set<iter-value-type<InputIterator>,
+//                    Hash, Pred, Allocator>;
+//
+// template<class T, class Hash = hash<T>,
+//        class Pred = equal_to<T>, class Allocator = allocator<T>>
+// unordered_set(initializer_list<T>, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_set<T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_set(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_set<iter-value-type<InputIterator>,
+//                    hash<iter-value-type<InputIterator>>,
+//                    equal_to<iter-value-type<InputIterator>>,
+//                    Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_set(InputIterator, InputIterator, typename see below::size_type,
+//               Hash, Allocator)
+//   -> unordered_set<iter-value-type<InputIterator>, Hash,
+//                    equal_to<iter-value-type<InputIterator>>,
+//                    Allocator>;
+//
+// template<class T, class Allocator>
+// unordered_set(initializer_list<T>, typename see below::size_type, Allocator)
+//   -> unordered_set<T, hash<T>, equal_to<T>, Allocator>;
+//
+// template<class T, class Hash, class Allocator>
+// unordered_set(initializer_list<T>, typename see below::size_type, Hash, Allocator)
+//   -> unordered_set<T, Hash, equal_to<T>, Allocator>;
+
+#include <functional>
+#include <unordered_set>
+
+int main(int, char**)
+{
+    {
+        // cannot deduce Key from nothing
+        std::unordered_set s;
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Size)
+        std::unordered_set s(42);
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash)
+        std::unordered_set s(42, std::hash<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred)
+        std::unordered_set s(42, std::hash<int>(), std::equal_to<>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Pred, Allocator)
+        std::unordered_set s(42, std::hash<int>(), std::equal_to<>(), std::allocator<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Allocator)
+        std::unordered_set s(std::allocator<int>{});
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Allocator)
+        std::unordered_set s(42, std::allocator<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+    {
+        // cannot deduce Key from just (Size, Hash, Allocator)
+        std::unordered_set s(42, std::hash<short>(), std::allocator<int>());
+            // expected-error@-1{{no viable constructor or deduction guide for deduction of template arguments of 'unordered_set'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.pass.cpp
new file mode 100644
index 0000000..13c5416
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <unordered_set>
+
+// template<class InputIterator,
+//        class Hash = hash<iter-value-type<InputIterator>>,
+//        class Pred = equal_to<iter-value-type<InputIterator>>,
+//        class Allocator = allocator<iter-value-type<InputIterator>>>
+// unordered_set(InputIterator, InputIterator, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_set<iter-value-type<InputIterator>,
+//                    Hash, Pred, Allocator>;
+//
+// template<class T, class Hash = hash<T>,
+//        class Pred = equal_to<T>, class Allocator = allocator<T>>
+// unordered_set(initializer_list<T>, typename see below::size_type = see below,
+//               Hash = Hash(), Pred = Pred(), Allocator = Allocator())
+//   -> unordered_set<T, Hash, Pred, Allocator>;
+//
+// template<class InputIterator, class Allocator>
+// unordered_set(InputIterator, InputIterator, typename see below::size_type, Allocator)
+//   -> unordered_set<iter-value-type<InputIterator>,
+//                    hash<iter-value-type<InputIterator>>,
+//                    equal_to<iter-value-type<InputIterator>>,
+//                    Allocator>;
+//
+// template<class InputIterator, class Hash, class Allocator>
+// unordered_set(InputIterator, InputIterator, typename see below::size_type,
+//               Hash, Allocator)
+//   -> unordered_set<iter-value-type<InputIterator>, Hash,
+//                    equal_to<iter-value-type<InputIterator>>,
+//                    Allocator>;
+//
+// template<class T, class Allocator>
+// unordered_set(initializer_list<T>, typename see below::size_type, Allocator)
+//   -> unordered_set<T, hash<T>, equal_to<T>, Allocator>;
+//
+// template<class T, class Hash, class Allocator>
+// unordered_set(initializer_list<T>, typename see below::size_type, Hash, Allocator)
+//   -> unordered_set<T, Hash, equal_to<T>, Allocator>;
+
+#include <algorithm> // is_permutation
+#include <cassert>
+#include <climits> // INT_MAX
+#include <type_traits>
+#include <unordered_set>
+
+#include "deduction_guides_sfinae_checks.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    const int expected_s[] = {1, 2, 3, INT_MAX};
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_set s(std::begin(arr), std::end(arr));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_set s(std::begin(arr), std::end(arr), 42);
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_set s(std::begin(arr), std::end(arr), 42, std::hash<long long>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_set s(std::begin(arr), std::end(arr), 42, std::hash<long long>(), test_allocator<int>(0, 40));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 40);
+    }
+
+    {
+    std::unordered_set<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_set s(source);
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    }
+
+    {
+    std::unordered_set<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_set s{source};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    }
+
+    {
+    std::unordered_set<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_set s(source, test_allocator<int>(0, 41));
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    assert(s.get_allocator().get_id() == 41);
+    }
+
+    {
+    std::unordered_set<int, std::hash<long long>, std::equal_to<>, test_allocator<int>> source;
+    std::unordered_set s{source, test_allocator<int>(0, 42)};  // braces instead of parens
+    ASSERT_SAME_TYPE(decltype(s), decltype(source));
+    assert(s.size() == 0);
+    assert(s.get_allocator().get_id() == 42);
+    }
+
+    {
+    std::unordered_set s{ 1, 2, 1, INT_MAX, 3 };
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_set s({ 1, 2, 1, INT_MAX, 3 }, 42);
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_set s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_set s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>(), std::equal_to<>());
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>, std::equal_to<>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    }
+
+    {
+    std::unordered_set s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>(), std::equal_to<>(), test_allocator<int>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>, std::equal_to<>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 43);
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_set s(std::begin(arr), std::end(arr), 42, test_allocator<int>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<int>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 44);
+    }
+
+    {
+    const int arr[] = { 1, 2, 1, INT_MAX, 3 };
+    std::unordered_set s(std::begin(arr), std::end(arr), 42, std::hash<long long>(), test_allocator<int>(0, 44));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 44);
+    }
+
+    {
+    std::unordered_set s({ 1, 2, 1, INT_MAX, 3 }, 42, test_allocator<int>(0, 43));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<int>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 43);
+    }
+
+    {
+    std::unordered_set s({ 1, 2, 1, INT_MAX, 3 }, 42, std::hash<long long>(), test_allocator<int>(0, 42));
+
+    ASSERT_SAME_TYPE(decltype(s), std::unordered_set<int, std::hash<long long>, std::equal_to<int>, test_allocator<int>>);
+    assert(std::is_permutation(s.begin(), s.end(), std::begin(expected_s), std::end(expected_s)));
+    assert(s.get_allocator().get_id() == 42);
+    }
+
+    UnorderedContainerDeductionGuidesSfinaeAway<std::unordered_set, std::unordered_set<int>>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/default.pass.cpp
new file mode 100644
index 0000000..f61d46d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/default.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set();
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef explicit_allocator<NotConstructible> A;
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   A
+                                   > C;
+        {
+        C c;
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == A());
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+        {
+        A a;
+        C c(a);
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == a);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+        }
+    }
+    {
+        std::unordered_set<int> c = {};
+        LIBCPP_ASSERT(c.bucket_count() == 0);
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/default_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/default_noexcept.pass.cpp
new file mode 100644
index 0000000..b867231
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/default_noexcept.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// unordered_set()
+//    noexcept(
+//        is_nothrow_default_constructible<allocator_type>::value &&
+//        is_nothrow_default_constructible<key_compare>::value &&
+//        is_nothrow_copy_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+#include "../../../test_hash.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp();
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_default_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/dtor_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/dtor_noexcept.pass.cpp
new file mode 100644
index 0000000..f0b7e28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/dtor_noexcept.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// ~unordered_set() // implied noexcept;
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    ~some_comp() noexcept(false);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    ~some_hash() noexcept(false);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_destructible<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_destructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/hash_copy_constructible.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/hash_copy_constructible.compile.fail.cpp
new file mode 100644
index 0000000..4857f80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/hash_copy_constructible.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// <unordered_map>
+
+// Check that std::unordered_set fails to instantiate if the hash function is
+// not copy-constructible. This is mentioned in LWG issue 2436
+
+#include <unordered_set>
+
+template <class T>
+struct Hash {
+    std::size_t operator () (const T& lhs) const { return 0; }
+
+    Hash () {}
+private:
+    Hash (const Hash &); // declared but not defined
+    };
+
+
+int main(int, char**) {
+    std::unordered_set<int, Hash<int> > m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init.pass.cpp
new file mode 100644
index 0000000..2812242
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> il);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+  {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c = {
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c = {
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            };
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_set<T, HF, Comp, A> C;
+
+        A a(42);
+        C c({
+                T(1),
+                T(2),
+                T(3),
+                T(4),
+                T(1),
+                T(2)
+            }, 12, a);
+
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_set<T, HF, Comp, A> C;
+
+        A a(42);
+        HF hf(43);
+        C c({
+                T(1),
+                T(2),
+                T(3),
+                T(4),
+                T(1),
+                T(2)
+            }, 12, hf, a);
+
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size.pass.cpp
new file mode 100644
index 0000000..ff516a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> il, size_type n);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_allocator.pass.cpp
new file mode 100644
index 0000000..340dbba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_allocator.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> init, size_type n, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_set<int,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator> C;
+    C c({
+            1,
+            2,
+            3,
+            4,
+            1,
+            2
+        },
+        7,
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.count(1) == 1);
+    assert(c.count(2) == 1);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash.pass.cpp
new file mode 100644
index 0000000..628b327
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> il, size_type n,
+//               const hasher& hf);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..ab5f7d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_allocator.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> init, size_type n,
+//               const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_set<int,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator> C;
+    C c({
+            1,
+            2,
+            3,
+            4,
+            1,
+            2
+        },
+        7,
+        test_hash<int>(5),
+        alloc);
+
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.count(1) == 1);
+    assert(c.count(2) == 1);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..af5a371
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_equal.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..bf8c956
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/init_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(initializer_list<value_type> il, size_type n,
+//               const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        C c({
+                P(1),
+                P(2),
+                P(3),
+                P(4),
+                P(1),
+                P(2)
+            },
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter.pass.cpp
new file mode 100644
index 0000000..8934490
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_set<T, HF, Comp, A> C;
+        T arr[] =
+        {
+            T(1),
+            T(2),
+            T(3),
+            T(4),
+            T(1),
+            T(2)
+        };
+        A a(42);
+        C c(cpp17_input_iterator<T*>(arr), cpp17_input_iterator<T*>(arr + sizeof(arr)/sizeof(arr[0])), 12, a);
+        assert(c.bucket_count() >= 12);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == HF());
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+    {
+        typedef int T;
+        typedef test_hash<T> HF;
+        typedef test_equal_to<T> Comp;
+        typedef test_allocator<T> A;
+        typedef std::unordered_set<T, HF, Comp, A> C;
+        T arr[] =
+        {
+            T(1),
+            T(2),
+            T(3),
+            T(4),
+            T(1),
+            T(2)
+        };
+        HF hf(43);
+        A a(42);
+        C c(cpp17_input_iterator<T*>(arr), cpp17_input_iterator<T*>(arr + sizeof(arr)/sizeof(arr[0])), 16, hf, a);
+        assert(c.bucket_count() >= 16);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == hf);
+        assert(!(c.hash_function() == HF()));
+        assert(c.key_eq() == Comp());
+        assert(c.get_allocator() == a);
+        assert(!(c.get_allocator() == A()));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size.pass.cpp
new file mode 100644
index 0000000..8b6149a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last, size_type n);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>());
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_allocator.pass.cpp
new file mode 100644
index 0000000..cfed6df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_allocator.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last, size_type n,
+//                   const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_set<int,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator> C;
+    int a[] =
+    {
+        1,
+        2,
+        3,
+        4,
+        1,
+        2
+    };
+    C c(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + sizeof(a)/sizeof(a[0])),
+        7,
+        alloc
+        );
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.count(1) == 1);
+    assert(c.count(2) == 1);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>());
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash.pass.cpp
new file mode 100644
index 0000000..93ff746
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>());
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..2c44cba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_allocator.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_set<int,
+                               test_hash<int>,
+                               test_equal_to<int>,
+                               Allocator> C;
+    int a[] =
+    {
+        1,
+        2,
+        3,
+        4,
+        1,
+        2
+    };
+    C c(cpp17_input_iterator<int*>(a), cpp17_input_iterator<int*>(a + sizeof(a)/sizeof(a[0])),
+        7,
+        test_hash<int>(5),
+        alloc
+        );
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.size() == 4);
+    assert(c.count(1) == 1);
+    assert(c.count(2) == 1);
+    assert(c.count(3) == 1);
+    assert(c.count(4) == 1);
+    assert(c.hash_function() == test_hash<int>(5));
+    assert(c.key_eq() == test_equal_to<int>());
+    assert(c.get_allocator() == alloc);
+    assert(!c.empty());
+    assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<int>(10));
+    test(min_allocator<int>());
+    test(explicit_allocator<int>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_equal.pass.cpp
new file mode 100644
index 0000000..272c080
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_equal.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..024dc4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/iter_iter_size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// template <class InputIterator>
+//     unordered_set(InputIterator first, InputIterator last, size_type n,
+//                   const hasher& hf, const key_equal& eql,
+//                   const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c(cpp17_input_iterator<P*>(a), cpp17_input_iterator<P*>(a + sizeof(a)/sizeof(a[0])),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move.addressof.compile.pass.cpp
new file mode 100644
index 0000000..f7e9eb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move.addressof.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(unordered_set&& u);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::unordered_set<operator_hijacker> so;
+  std::unordered_set<operator_hijacker> s(std::move(so));
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move.pass.cpp
new file mode 100644
index 0000000..80131be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(unordered_set&& u);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   test_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            test_allocator<int>(10)
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == test_allocator<int>(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        C c0(7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C c = std::move(c0);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 0);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   min_allocator<int>
+                                   > C;
+        typedef int P;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            min_allocator<int>()
+           );
+        C::iterator it0 = c0.begin();
+        C c = std::move(c0);
+        assert(it0 == c.begin()); // Iterators remain valid
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == min_allocator<int>());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_alloc.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_alloc.addressof.compile.pass.cpp
new file mode 100644
index 0000000..8e9d8cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_alloc.addressof.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(unordered_set&& u, const allocator_type& a);
+
+// Validate whether the operation properly guards against ADL-hijacking operator&
+
+#include <unordered_set>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  using A = test_allocator<operator_hijacker>;
+  using H = std::hash<operator_hijacker>;
+  using P = std::equal_to<operator_hijacker>;
+
+  const A a;
+  std::unordered_set<operator_hijacker, H, P, A> so;
+  std::unordered_set<operator_hijacker, H, P, A> s(std::move(so), a);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_alloc.pass.cpp
new file mode 100644
index 0000000..41bd56b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_alloc.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(unordered_set&& u, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+#include <cfloat>
+#include <cmath>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef int P;
+        typedef test_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(12));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(12));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef int P;
+        typedef test_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A(10)
+           );
+        C c(std::move(c0), A(10));
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A(10));
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+    {
+        typedef int P;
+        typedef min_allocator<int> A;
+        typedef std::unordered_set<int,
+                                   test_hash<int>,
+                                   test_equal_to<int>,
+                                   A
+                                   > C;
+        P a[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c0(a, a + sizeof(a)/sizeof(a[0]),
+            7,
+            test_hash<int>(8),
+            test_equal_to<int>(9),
+            A()
+           );
+        C c(std::move(c0), A());
+        assert(c.bucket_count() >= 5);
+        assert(c.size() == 4);
+        assert(c.count(1) == 1);
+        assert(c.count(2) == 1);
+        assert(c.count(3) == 1);
+        assert(c.count(4) == 1);
+        assert(c.hash_function() == test_hash<int>(8));
+        assert(c.key_eq() == test_equal_to<int>(9));
+        assert(c.get_allocator() == A());
+        assert(!c.empty());
+        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
+        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
+        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+        assert(c.max_load_factor() == 1);
+
+        assert(c0.empty());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..1ff2a7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_assign_noexcept.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// unordered_set& operator=(unordered_set&& c)
+//     noexcept(
+//          allocator_type::propagate_on_container_move_assignment::value &&
+//          is_nothrow_move_assignable<allocator_type>::value &&
+//          is_nothrow_move_assignable<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp& operator=(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    some_hash& operator=(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_assignable<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_noexcept.pass.cpp
new file mode 100644
index 0000000..a31108a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/move_noexcept.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// unordered_set(unordered_set&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value &&
+//                 is_nothrow_move_constructible<key_compare>::value);
+
+// This tests a conforming extension
+
+// UNSUPPORTED: c++03
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+    some_comp(const some_comp&);
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash();
+    some_hash(const some_hash&);
+    std::size_t operator()(T const&) const;
+};
+
+int main(int, char**)
+{
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size.compile.fail.cpp
new file mode 100644
index 0000000..f9bb88f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size.compile.fail.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// explicit unordered_set(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c = 7;
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size.pass.cpp
new file mode 100644
index 0000000..5c43179
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// explicit unordered_set(size_type n);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7);
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>());
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_allocator.pass.cpp
new file mode 100644
index 0000000..d547ea2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_allocator.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(size_type n, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_set<NotConstructible,
+                               test_hash<NotConstructible>,
+                               test_equal_to<NotConstructible>,
+                               Allocator> C;
+    C c(7, alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>());
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<NotConstructible>(10));
+    test(min_allocator<NotConstructible>());
+    test(explicit_allocator<NotConstructible>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash.pass.cpp
new file mode 100644
index 0000000..6ee0f5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(size_type n, const hasher& hf);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>());
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_allocator.pass.cpp
new file mode 100644
index 0000000..972c0db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_allocator.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(size_type n, const hasher& hash, const allocator_type& alloc);
+
+#include <unordered_set>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Allocator>
+void test(const Allocator& alloc)
+{
+    typedef std::unordered_set<NotConstructible,
+                               test_hash<NotConstructible>,
+                               test_equal_to<NotConstructible>,
+                               Allocator> C;
+    C c(7, test_hash<NotConstructible>(5), alloc);
+    LIBCPP_ASSERT(c.bucket_count() == 7);
+    assert(c.hash_function() == test_hash<NotConstructible>(5));
+    assert(c.key_eq() == test_equal_to<NotConstructible>());
+    assert(c.get_allocator() == alloc);
+    assert(c.size() == 0);
+    assert(c.empty());
+    assert(std::distance(c.begin(), c.end()) == 0);
+    assert(c.load_factor() == 0);
+    assert(c.max_load_factor() == 1);
+}
+
+int main(int, char**)
+{
+    test(test_allocator<NotConstructible>(10));
+    test(min_allocator<NotConstructible>());
+    test(explicit_allocator<NotConstructible>());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_equal.pass.cpp
new file mode 100644
index 0000000..a54ddaf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_equal.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(size_type n, const hasher& hf, const key_equal& eql);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (test_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_equal_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_equal_allocator.pass.cpp
new file mode 100644
index 0000000..c3d97c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.cnstr/size_hash_equal_allocator.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// unordered_set(size_type n, const hasher& hf, const key_equal& eql, const allocator_type& a);
+
+#include <unordered_set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../../NotConstructible.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   test_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            test_allocator<NotConstructible>(10)
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (test_allocator<NotConstructible>(10)));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::unordered_set<NotConstructible,
+                                   test_hash<NotConstructible>,
+                                   test_equal_to<NotConstructible>,
+                                   min_allocator<NotConstructible>
+                                   > C;
+        C c(7,
+            test_hash<NotConstructible>(8),
+            test_equal_to<NotConstructible>(9),
+            min_allocator<NotConstructible>()
+           );
+        LIBCPP_ASSERT(c.bucket_count() == 7);
+        assert(c.hash_function() == test_hash<NotConstructible>(8));
+        assert(c.key_eq() == test_equal_to<NotConstructible>(9));
+        assert(c.get_allocator() == (min_allocator<NotConstructible>()));
+        assert(c.size() == 0);
+        assert(c.empty());
+        assert(std::distance(c.begin(), c.end()) == 0);
+        assert(c.load_factor() == 0);
+        assert(c.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.swap/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.swap/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..e4d4861
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.swap/swap_noexcept.pass.cpp
@@ -0,0 +1,191 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <unordered_set>
+
+// void swap(unordered_set& c)
+//      noexcept(
+//          (!allocator_type::propagate_on_container_swap::value ||
+//           __is_nothrow_swappable<allocator_type>::value) &&
+//           __is_nothrow_swappable<hasher>::value &&
+//           __is_nothrow_swappable<key_equal>::value);
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::is_always_equal::value &&
+//               noexcept(swap(declval<Hash&>(), declval<Hash&>())) &&
+//               noexcept(swap(declval<Pred&>(), declval<Pred&>())));
+
+// This tests a conforming extension
+
+#include <unordered_set>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_comp
+{
+    typedef T value_type;
+
+    some_comp() {}
+    some_comp(const some_comp&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+template <class T>
+struct some_comp2
+{
+    typedef T value_type;
+
+    some_comp2() {}
+    some_comp2(const some_comp2&) {}
+    bool operator()(const T&, const T&) const { return false; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_hash
+{
+    typedef T value_type;
+    some_hash() {}
+    some_hash(const some_hash&);
+    std::size_t operator()(const T&) const { return 0; }
+};
+
+template <class T>
+struct some_hash2
+{
+    typedef T value_type;
+    some_hash2() {}
+    some_hash2(const some_hash2&);
+    std::size_t operator()(const T&) const { return 0; }
+};
+
+#if TEST_STD_VER >= 14
+template <typename T>
+void swap(some_hash2<T>&, some_hash2<T>&) noexcept {}
+#endif
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::false_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unordered_set<MoveOnly> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                           std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                          std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    {
+        typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
+                                                         some_comp<MoveOnly>> C;
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+
+#if TEST_STD_VER >= 14
+    { // POCS allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, throwable swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, throwable swap for hash, nothrow swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, throwable swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash2<MoveOnly>, some_comp <MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // POCS allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc <MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+    { // always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc2<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    { // NOT always equal allocator, nothrow swap for hash, nothrow swap for comp
+    typedef std::unordered_set<MoveOnly, some_hash2<MoveOnly>, some_comp2<MoveOnly>, some_alloc3<MoveOnly>> C;
+    static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.swap/swap_non_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.swap/swap_non_member.pass.cpp
new file mode 100644
index 0000000..49c45f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/unord/unord.set/unord.set.swap/swap_non_member.pass.cpp
@@ -0,0 +1,579 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <unordered_set>
+
+// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
+//           class Alloc = allocator<Value>>
+// class unordered_set
+
+// void swap(unordered_set& x, unordered_set& y);
+
+#include <unordered_set>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "../../../test_compare.h"
+#include "../../../test_hash.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef test_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1, 1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(1, 2));
+        c2.max_load_factor(2);
+        C::iterator it1 = c1.begin();
+        C::iterator it2 = c2.begin();
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator().get_id() == 1);
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+        assert(it2 == c1.begin()); // Iterators are not invalidated
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator().get_id() == 2);
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+        assert(it1 == c2.begin()); // Iterators are not invalidated
+    }
+
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef other_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc(1));
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc(2));
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc(2));
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc(1));
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        LIBCPP_ASSERT(c2.bucket_count() == 0);
+        assert(c2.size() == 0);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        LIBCPP_ASSERT(c1.bucket_count() == 0);
+        assert(c1.size() == 0);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+    {
+        typedef test_hash<int> Hash;
+        typedef test_equal_to<int> Compare;
+        typedef min_allocator<int> Alloc;
+        typedef std::unordered_set<int, Hash, Compare, Alloc> C;
+        typedef int P;
+        P a1[] =
+        {
+            P(1),
+            P(2),
+            P(3),
+            P(4),
+            P(1),
+            P(2)
+        };
+        P a2[] =
+        {
+            P(10),
+            P(20),
+            P(30),
+            P(40),
+            P(50),
+            P(60),
+            P(70),
+            P(80)
+        };
+        C c1(std::begin(a1), std::end(a1), 0, Hash(1), Compare(1), Alloc());
+        C c2(std::begin(a2), std::end(a2), 0, Hash(2), Compare(2), Alloc());
+        c2.max_load_factor(2);
+        swap(c1, c2);
+
+        assert(c1.bucket_count() >= 8);
+        assert(c1.size() == 8);
+        assert(*c1.find(10) == 10);
+        assert(*c1.find(20) == 20);
+        assert(*c1.find(30) == 30);
+        assert(*c1.find(40) == 40);
+        assert(*c1.find(50) == 50);
+        assert(*c1.find(60) == 60);
+        assert(*c1.find(70) == 70);
+        assert(*c1.find(80) == 80);
+        assert(c1.hash_function() == Hash(2));
+        assert(c1.key_eq() == Compare(2));
+        assert(c1.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c1.begin(), c1.end())) == c1.size());
+        assert(static_cast<std::size_t>(std::distance(c1.cbegin(), c1.cend())) == c1.size());
+        assert(c1.max_load_factor() == 2);
+
+        assert(c2.bucket_count() >= 4);
+        assert(c2.size() == 4);
+        assert(c2.count(1) == 1);
+        assert(c2.count(2) == 1);
+        assert(c2.count(3) == 1);
+        assert(c2.count(4) == 1);
+        assert(c2.hash_function() == Hash(1));
+        assert(c2.key_eq() == Compare(1));
+        assert(c2.get_allocator() == Alloc());
+        assert(static_cast<std::size_t>(std::distance(c2.begin(), c2.end())) == c2.size());
+        assert(static_cast<std::size_t>(std::distance(c2.cbegin(), c2.cend())) == c2.size());
+        assert(c2.max_load_factor() == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/enable_borrowed_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/enable_borrowed_range.compile.pass.cpp
new file mode 100644
index 0000000..6468d66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/enable_borrowed_range.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<class ElementType, size_t Extent>
+// inline constexpr bool ranges::enable_borrowed_range<
+//     span<ElementType, Extent>> = true;
+
+#include <span>
+
+#include "test_macros.h"
+
+void test() {
+  static_assert(std::ranges::enable_borrowed_range<std::span<int, 0> >);
+  static_assert(std::ranges::enable_borrowed_range<std::span<int, 42> >);
+  static_assert(std::ranges::enable_borrowed_range<std::span<int, std::dynamic_extent> >);
+  static_assert(!std::ranges::enable_borrowed_range<std::span<int, 42>&>);
+  static_assert(!std::ranges::enable_borrowed_range<std::span<int, 42> const>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..fe28aee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// span
+
+#include <span>
+
+#include <concepts>
+#include <ranges>
+
+using range = std::span<int>;
+
+
+static_assert(std::same_as<std::ranges::iterator_t<range>, range::iterator>);
+static_assert(std::ranges::common_range<range>);
+static_assert(std::ranges::random_access_range<range>);
+static_assert(std::ranges::contiguous_range<range>);
+static_assert(std::ranges::view<range> && std::ranges::enable_view<range>);
+static_assert(std::ranges::sized_range<range>);
+static_assert(std::ranges::borrowed_range<range>);
+static_assert(std::ranges::viewable_range<range>);
+
+static_assert(std::same_as<std::ranges::iterator_t<range const>, range::iterator>);
+static_assert(std::ranges::common_range<range const>);
+static_assert(std::ranges::random_access_range<range const>);
+static_assert(std::ranges::contiguous_range<range const>);
+static_assert(!std::ranges::view<range const> && !std::ranges::enable_view<range const>);
+static_assert(std::ranges::sized_range<range const>);
+static_assert(std::ranges::borrowed_range<range const>);
+static_assert(std::ranges::viewable_range<range const>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/array.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/array.fail.cpp
new file mode 100644
index 0000000..7468216
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/array.fail.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t N>
+//     constexpr span(element_type (&arr)[N]) noexcept;
+// template<size_t N>
+//     constexpr span(array<value_type, N>& arr) noexcept;
+// template<size_t N>
+//     constexpr span(const array<value_type, N>& arr) noexcept;
+//
+// Remarks: These constructors shall not participate in overload resolution unless:
+//   - extent == dynamic_extent || N == extent is true, and
+//   - remove_pointer_t<decltype(data(arr))>(*)[] is convertible to ElementType(*)[].
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+               int   arr[] = {1,2,3};
+const          int  carr[] = {4,5,6};
+      volatile int  varr[] = {7,8,9};
+const volatile int cvarr[] = {1,3,5};
+
+int main(int, char**)
+{
+//  Size wrong
+    {
+    std::span<int, 2>   s1(arr); // expected-error {{no matching constructor for initialization of 'std::span<int, 2>'}}
+    }
+
+//  Type wrong
+    {
+    std::span<float>    s1(arr);   // expected-error {{no matching constructor for initialization of 'std::span<float>'}}
+    std::span<float, 3> s2(arr);   // expected-error {{no matching constructor for initialization of 'std::span<float, 3>'}}
+    }
+
+//  CV wrong (dynamically sized)
+    {
+    std::span<               int> s1{ carr};    // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<               int> s2{ varr};    // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<               int> s3{cvarr};    // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<const          int> s4{ varr};    // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+    std::span<const          int> s5{cvarr};    // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+    std::span<      volatile int> s6{ carr};    // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
+    std::span<      volatile int> s7{cvarr};    // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
+    }
+
+//  CV wrong (statically sized)
+    {
+    std::span<               int,3> s1{ carr};  // expected-error {{no matching constructor for initialization of 'std::span<int, 3>'}}
+    std::span<               int,3> s2{ varr};  // expected-error {{no matching constructor for initialization of 'std::span<int, 3>'}}
+    std::span<               int,3> s3{cvarr};  // expected-error {{no matching constructor for initialization of 'std::span<int, 3>'}}
+    std::span<const          int,3> s4{ varr};  // expected-error {{no matching constructor for initialization of 'std::span<const int, 3>'}}
+    std::span<const          int,3> s5{cvarr};  // expected-error {{no matching constructor for initialization of 'std::span<const int, 3>'}}
+    std::span<      volatile int,3> s6{ carr};  // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 3>'}}
+    std::span<      volatile int,3> s7{cvarr};  // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 3>'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/array.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/array.pass.cpp
new file mode 100644
index 0000000..ce03c4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/array.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t N>
+//     constexpr span(element_type (&arr)[N]) noexcept;
+//
+// Remarks: These constructors shall not participate in overload resolution unless:
+//   - extent == dynamic_extent || N == extent is true, and
+//   - remove_pointer_t<decltype(data(arr))>(*)[] is convertible to ElementType(*)[].
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+void checkCV()
+{
+                   int   arr[] = {1,2,3};
+    const          int  carr[] = {4,5,6};
+          volatile int  varr[] = {7,8,9};
+    const volatile int cvarr[] = {1,3,5};
+
+//  Types the same (dynamic sized)
+    {
+    std::span<               int> s1{  arr};    // a span<               int> pointing at int.
+    std::span<const          int> s2{ carr};    // a span<const          int> pointing at const int.
+    std::span<      volatile int> s3{ varr};    // a span<      volatile int> pointing at volatile int.
+    std::span<const volatile int> s4{cvarr};    // a span<const volatile int> pointing at const volatile int.
+    assert(s1.size() + s2.size() + s3.size() + s4.size() == 12);
+    }
+
+//  Types the same (static sized)
+    {
+    std::span<               int,3> s1{  arr};  // a span<               int> pointing at int.
+    std::span<const          int,3> s2{ carr};  // a span<const          int> pointing at const int.
+    std::span<      volatile int,3> s3{ varr};  // a span<      volatile int> pointing at volatile int.
+    std::span<const volatile int,3> s4{cvarr};  // a span<const volatile int> pointing at const volatile int.
+    assert(s1.size() + s2.size() + s3.size() + s4.size() == 12);
+    }
+
+
+//  types different (dynamic sized)
+    {
+    std::span<const          int> s1{ arr};     // a span<const          int> pointing at int.
+    std::span<      volatile int> s2{ arr};     // a span<      volatile int> pointing at int.
+    std::span<      volatile int> s3{ arr};     // a span<      volatile int> pointing at const int.
+    std::span<const volatile int> s4{ arr};     // a span<const volatile int> pointing at int.
+    std::span<const volatile int> s5{carr};     // a span<const volatile int> pointing at const int.
+    std::span<const volatile int> s6{varr};     // a span<const volatile int> pointing at volatile int.
+    assert(s1.size() + s2.size() + s3.size() + s4.size() + s5.size() + s6.size() == 18);
+    }
+
+//  types different (static sized)
+    {
+    std::span<const          int,3> s1{ arr};   // a span<const          int> pointing at int.
+    std::span<      volatile int,3> s2{ arr};   // a span<      volatile int> pointing at int.
+    std::span<      volatile int,3> s3{ arr};   // a span<      volatile int> pointing at const int.
+    std::span<const volatile int,3> s4{ arr};   // a span<const volatile int> pointing at int.
+    std::span<const volatile int,3> s5{carr};   // a span<const volatile int> pointing at const int.
+    std::span<const volatile int,3> s6{varr};   // a span<const volatile int> pointing at volatile int.
+    assert(s1.size() + s2.size() + s3.size() + s4.size() + s5.size() + s6.size() == 18);
+    }
+}
+
+template<class T>
+constexpr bool testSpan()
+{
+    T val[2] = {};
+
+    ASSERT_NOEXCEPT(std::span<T>{val});
+    ASSERT_NOEXCEPT(std::span<T, 2>{val});
+    ASSERT_NOEXCEPT(std::span<const T>{val});
+    ASSERT_NOEXCEPT(std::span<const T, 2>{val});
+
+    std::span<T> s1 = val;
+    std::span<T, 2> s2 = val;
+    std::span<const T> s3 = val;
+    std::span<const T, 2> s4 = val;
+    assert(s1.data() == val && s1.size() == 2);
+    assert(s2.data() == val && s2.size() == 2);
+    assert(s3.data() == val && s3.size() == 2);
+    assert(s4.data() == val && s4.size() == 2);
+
+    std::span<const int> s5 = {{1,2}};
+    std::span<const int, 2> s6 = {{1,2}};
+    assert(s5.size() == 2);  // and it dangles
+    assert(s6.size() == 2);  // and it dangles
+
+    return true;
+}
+
+
+struct A {};
+
+int main(int, char**)
+{
+    testSpan<int>();
+    testSpan<double>();
+    testSpan<A>();
+    testSpan<std::string>();
+
+    static_assert(testSpan<int>());
+    static_assert(testSpan<double>());
+    static_assert(testSpan<A>());
+
+    checkCV();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/assign.pass.cpp
new file mode 100644
index 0000000..7481987
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/assign.pass.cpp
@@ -0,0 +1,297 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+//  constexpr span& operator=(const span& other) noexcept = default;
+
+#include <span>
+#include <cassert>
+#include <iterator>
+#include <string>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool doAssign(T lhs, T rhs)
+{
+    ASSERT_NOEXCEPT(std::declval<T&>() = rhs);
+    lhs = rhs;
+    return lhs.data() == rhs.data()
+     &&    lhs.size() == rhs.size();
+}
+
+struct A{};
+
+constexpr int carr1[] = {1,2,3,4};
+constexpr int carr2[] = {3,4,5};
+constexpr int carr3[] = {7,8};
+          int   arr[] = {5,6,7,9};
+std::string strs[] = {"ABC", "DEF", "GHI"};
+
+
+int main(int, char**)
+{
+
+//  constexpr dynamically sized assignment
+    {
+//  On systems where 'ptrdiff_t' is a synonym for 'int',
+//  the call span(ptr, 0) selects the (pointer, size_type) constructor.
+//  On systems where 'ptrdiff_t' is NOT a synonym for 'int',
+//  it is ambiguous, because of 0 also being convertible to a null pointer
+//  and so the compiler can't choose between:
+//      span(pointer, size_type)
+//  and span(pointer, pointer)
+//  We cast zero to std::ptrdiff_t to remove that ambiguity.
+//  Example:
+//      On darwin x86_64, ptrdiff_t is the same as long int.
+//      On darwin i386, ptrdiff_t is the same as int.
+        constexpr std::span<const int> spans[] = {
+            {},
+            {carr1, static_cast<std::size_t>(0)},
+            {carr1,     1U},
+            {carr1,     2U},
+            {carr1,     3U},
+            {carr1,     4U},
+            {carr2, static_cast<std::size_t>(0)},
+            {carr2,     1U},
+            {carr2,     2U},
+            {carr2,     3U},
+            {carr3, static_cast<std::size_t>(0)},
+            {carr3,     1U},
+            {carr3,     2U}
+            };
+
+        static_assert(std::size(spans) == 13, "" );
+
+//  No for loops in constexpr land :-(
+        static_assert(doAssign(spans[0], spans[0]), "");
+        static_assert(doAssign(spans[0], spans[1]), "");
+        static_assert(doAssign(spans[0], spans[2]), "");
+        static_assert(doAssign(spans[0], spans[3]), "");
+        static_assert(doAssign(spans[0], spans[4]), "");
+        static_assert(doAssign(spans[0], spans[5]), "");
+        static_assert(doAssign(spans[0], spans[6]), "");
+        static_assert(doAssign(spans[0], spans[7]), "");
+        static_assert(doAssign(spans[0], spans[8]), "");
+        static_assert(doAssign(spans[0], spans[9]), "");
+        static_assert(doAssign(spans[0], spans[10]), "");
+        static_assert(doAssign(spans[0], spans[11]), "");
+        static_assert(doAssign(spans[0], spans[12]), "");
+
+        static_assert(doAssign(spans[1], spans[1]), "");
+        static_assert(doAssign(spans[1], spans[2]), "");
+        static_assert(doAssign(spans[1], spans[3]), "");
+        static_assert(doAssign(spans[1], spans[4]), "");
+        static_assert(doAssign(spans[1], spans[5]), "");
+        static_assert(doAssign(spans[1], spans[6]), "");
+        static_assert(doAssign(spans[1], spans[7]), "");
+        static_assert(doAssign(spans[1], spans[8]), "");
+        static_assert(doAssign(spans[1], spans[9]), "");
+        static_assert(doAssign(spans[1], spans[10]), "");
+        static_assert(doAssign(spans[1], spans[11]), "");
+        static_assert(doAssign(spans[1], spans[12]), "");
+
+        static_assert(doAssign(spans[2], spans[2]), "");
+        static_assert(doAssign(spans[2], spans[3]), "");
+        static_assert(doAssign(spans[2], spans[4]), "");
+        static_assert(doAssign(spans[2], spans[5]), "");
+        static_assert(doAssign(spans[2], spans[6]), "");
+        static_assert(doAssign(spans[2], spans[7]), "");
+        static_assert(doAssign(spans[2], spans[8]), "");
+        static_assert(doAssign(spans[2], spans[9]), "");
+        static_assert(doAssign(spans[2], spans[10]), "");
+        static_assert(doAssign(spans[2], spans[11]), "");
+        static_assert(doAssign(spans[2], spans[12]), "");
+
+        static_assert(doAssign(spans[3], spans[3]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[10]), "");
+        static_assert(doAssign(spans[3], spans[11]), "");
+        static_assert(doAssign(spans[3], spans[12]), "");
+
+        static_assert(doAssign(spans[4], spans[4]), "");
+        static_assert(doAssign(spans[4], spans[5]), "");
+        static_assert(doAssign(spans[4], spans[6]), "");
+        static_assert(doAssign(spans[4], spans[7]), "");
+        static_assert(doAssign(spans[4], spans[8]), "");
+        static_assert(doAssign(spans[4], spans[9]), "");
+        static_assert(doAssign(spans[4], spans[10]), "");
+        static_assert(doAssign(spans[4], spans[11]), "");
+        static_assert(doAssign(spans[4], spans[12]), "");
+
+        static_assert(doAssign(spans[5], spans[5]), "");
+        static_assert(doAssign(spans[5], spans[6]), "");
+        static_assert(doAssign(spans[5], spans[7]), "");
+        static_assert(doAssign(spans[5], spans[8]), "");
+        static_assert(doAssign(spans[5], spans[9]), "");
+        static_assert(doAssign(spans[5], spans[10]), "");
+        static_assert(doAssign(spans[5], spans[11]), "");
+        static_assert(doAssign(spans[5], spans[12]), "");
+
+        static_assert(doAssign(spans[6], spans[6]), "");
+        static_assert(doAssign(spans[6], spans[7]), "");
+        static_assert(doAssign(spans[6], spans[8]), "");
+        static_assert(doAssign(spans[6], spans[9]), "");
+        static_assert(doAssign(spans[6], spans[10]), "");
+        static_assert(doAssign(spans[6], spans[11]), "");
+        static_assert(doAssign(spans[6], spans[12]), "");
+
+        static_assert(doAssign(spans[7], spans[7]), "");
+        static_assert(doAssign(spans[7], spans[8]), "");
+        static_assert(doAssign(spans[7], spans[9]), "");
+        static_assert(doAssign(spans[7], spans[10]), "");
+        static_assert(doAssign(spans[7], spans[11]), "");
+        static_assert(doAssign(spans[7], spans[12]), "");
+
+        static_assert(doAssign(spans[8], spans[8]), "");
+        static_assert(doAssign(spans[8], spans[9]), "");
+        static_assert(doAssign(spans[8], spans[10]), "");
+        static_assert(doAssign(spans[8], spans[11]), "");
+        static_assert(doAssign(spans[8], spans[12]), "");
+
+        static_assert(doAssign(spans[9], spans[9]), "");
+        static_assert(doAssign(spans[9], spans[10]), "");
+        static_assert(doAssign(spans[9], spans[11]), "");
+        static_assert(doAssign(spans[9], spans[12]), "");
+
+        static_assert(doAssign(spans[10], spans[10]), "");
+        static_assert(doAssign(spans[10], spans[11]), "");
+        static_assert(doAssign(spans[10], spans[12]), "");
+
+        static_assert(doAssign(spans[11], spans[11]), "");
+        static_assert(doAssign(spans[11], spans[12]), "");
+
+        static_assert(doAssign(spans[12], spans[12]), "");
+
+//      for (size_t i = 0; i < std::size(spans); ++i)
+//          for (size_t j = i; j < std::size(spans); ++j)
+//              static_assert(doAssign(spans[i], spans[j]), "");
+    }
+
+//  constexpr statically sized assignment
+    {
+        using spanType = std::span<const int,2>;
+        constexpr spanType spans[] = {
+            spanType{carr1, 2},
+            spanType{carr1 + 1, 2},
+            spanType{carr1 + 2, 2},
+            spanType{carr2, 2},
+            spanType{carr2 + 1, 2},
+            spanType{carr3, 2}
+            };
+
+        static_assert(std::size(spans) == 6, "" );
+
+//  No for loops in constexpr land :-(
+        static_assert(doAssign(spans[0], spans[0]), "");
+        static_assert(doAssign(spans[0], spans[1]), "");
+        static_assert(doAssign(spans[0], spans[2]), "");
+        static_assert(doAssign(spans[0], spans[3]), "");
+        static_assert(doAssign(spans[0], spans[4]), "");
+        static_assert(doAssign(spans[0], spans[5]), "");
+
+        static_assert(doAssign(spans[1], spans[1]), "");
+        static_assert(doAssign(spans[1], spans[2]), "");
+        static_assert(doAssign(spans[1], spans[3]), "");
+        static_assert(doAssign(spans[1], spans[4]), "");
+        static_assert(doAssign(spans[1], spans[5]), "");
+
+        static_assert(doAssign(spans[2], spans[2]), "");
+        static_assert(doAssign(spans[2], spans[3]), "");
+        static_assert(doAssign(spans[2], spans[4]), "");
+        static_assert(doAssign(spans[2], spans[5]), "");
+
+        static_assert(doAssign(spans[3], spans[3]), "");
+        static_assert(doAssign(spans[3], spans[4]), "");
+        static_assert(doAssign(spans[3], spans[5]), "");
+
+        static_assert(doAssign(spans[4], spans[4]), "");
+        static_assert(doAssign(spans[4], spans[5]), "");
+
+        static_assert(doAssign(spans[5], spans[5]), "");
+
+//      for (size_t i = 0; i < std::size(spans); ++i)
+//          for (size_t j = i; j < std::size(spans); ++j)
+//              static_assert(doAssign(spans[i], spans[j]), "");
+    }
+
+
+//  dynamically sized assignment
+    {
+        std::span<int> spans[] = {
+            {},
+            {arr,     arr + 1},
+            {arr,     arr + 2},
+            {arr,     arr + 3},
+            {arr + 1, arr + 3} // same size as s2
+            };
+
+        for (size_t i = 0; i < std::size(spans); ++i)
+            for (size_t j = i; j < std::size(spans); ++j)
+                assert((doAssign(spans[i], spans[j])));
+    }
+
+//  statically sized assignment
+    {
+        using spanType = std::span<int,2>;
+        spanType spans[] = {
+            spanType{arr,     arr + 2},
+            spanType{arr + 1, arr + 3},
+            spanType{arr + 2, arr + 4}
+            };
+
+        for (size_t i = 0; i < std::size(spans); ++i)
+            for (size_t j = i; j < std::size(spans); ++j)
+                assert((doAssign(spans[i], spans[j])));
+    }
+
+//  dynamically sized assignment
+    {
+    std::span<std::string> spans[] = {
+            {strs,     strs},
+            {strs,     strs + 1},
+            {strs,     strs + 2},
+            {strs,     strs + 3},
+            {strs + 1, strs + 1},
+            {strs + 1, strs + 2},
+            {strs + 1, strs + 3},
+            {strs + 2, strs + 2},
+            {strs + 2, strs + 3},
+            {strs + 3, strs + 3}
+            };
+
+        for (size_t i = 0; i < std::size(spans); ++i)
+            for (size_t j = i; j < std::size(spans); ++j)
+                assert((doAssign(spans[i], spans[j])));
+    }
+
+    {
+    using spanType = std::span<std::string, 1>;
+    spanType spans[] = {
+            spanType{strs,     strs + 1},
+            spanType{strs + 1, strs + 2},
+            spanType{strs + 2, strs + 3}
+            };
+
+        for (size_t i = 0; i < std::size(spans); ++i)
+            for (size_t j = i; j < std::size(spans); ++j)
+                assert((doAssign(spans[i], spans[j])));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/copy.pass.cpp
new file mode 100644
index 0000000..28f13e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/copy.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+//  constexpr span(const span& other) noexcept = default;
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool doCopy(const T &rhs)
+{
+    ASSERT_NOEXCEPT(T{rhs});
+    T lhs{rhs};
+    return lhs.data() == rhs.data()
+     &&    lhs.size() == rhs.size();
+}
+
+struct A{};
+
+template <typename T>
+void testCV ()
+{
+    int  arr[] = {1,2,3};
+    assert((doCopy(std::span<T>  ()          )));
+    assert((doCopy(std::span<T,0>()          )));
+    assert((doCopy(std::span<T>  (&arr[0], 1))));
+    assert((doCopy(std::span<T,1>(&arr[0], 1))));
+    assert((doCopy(std::span<T>  (&arr[0], 2))));
+    assert((doCopy(std::span<T,2>(&arr[0], 2))));
+}
+
+
+int main(int, char**)
+{
+    constexpr int carr[] = {1,2,3};
+
+    static_assert(doCopy(std::span<      int>  ()),            "");
+    static_assert(doCopy(std::span<      int,0>()),            "");
+    static_assert(doCopy(std::span<const int>  (&carr[0], 1)), "");
+    static_assert(doCopy(std::span<const int,1>(&carr[0], 1)), "");
+    static_assert(doCopy(std::span<const int>  (&carr[0], 2)), "");
+    static_assert(doCopy(std::span<const int,2>(&carr[0], 2)), "");
+
+    static_assert(doCopy(std::span<long>()),   "");
+    static_assert(doCopy(std::span<double>()), "");
+    static_assert(doCopy(std::span<A>()),      "");
+
+    std::string s;
+    assert(doCopy(std::span<std::string>   ()     ));
+    assert(doCopy(std::span<std::string, 0>()     ));
+    assert(doCopy(std::span<std::string>   (&s, 1)));
+    assert(doCopy(std::span<std::string, 1>(&s, 1)));
+
+    testCV<               int>();
+    testCV<const          int>();
+    testCV<      volatile int>();
+    testCV<const volatile int>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/deduct.pass.cpp
new file mode 100644
index 0000000..398862d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/deduct.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+//   template<class It, class EndOrSize>
+//     span(It, EndOrSize) -> span<remove_reference_t<iter_reference_t<_It>>>;
+//
+//   template<class T, size_t N>
+//     span(T (&)[N]) -> span<T, N>;
+//
+//   template<class T, size_t N>
+//     span(array<T, N>&) -> span<T, N>;
+//
+//   template<class T, size_t N>
+//     span(const array<T, N>&) -> span<const T, N>;
+//
+//   template<class R>
+//     span(R&&) -> span<remove_reference_t<ranges::range_reference_t<R>>>;
+
+
+#include <span>
+#include <array>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <string>
+
+#include "test_macros.h"
+
+void test_iterator_sentinel() {
+  int arr[] = {1, 2, 3};
+  {
+  std::span s{std::begin(arr), std::end(arr)};
+  ASSERT_SAME_TYPE(decltype(s), std::span<int>);
+  assert(s.size() == std::size(arr));
+  assert(s.data() == std::data(arr));
+  }
+  {
+  std::span s{std::begin(arr), 3};
+  ASSERT_SAME_TYPE(decltype(s), std::span<int>);
+  assert(s.size() == std::size(arr));
+  assert(s.data() == std::data(arr));
+  }
+}
+
+void test_c_array() {
+    {
+    int arr[] = {1, 2, 3};
+    std::span s{arr};
+    ASSERT_SAME_TYPE(decltype(s), std::span<int, 3>);
+    assert(s.size() == std::size(arr));
+    assert(s.data() == std::data(arr));
+    }
+
+    {
+    const int arr[] = {1,2,3};
+    std::span s{arr};
+    ASSERT_SAME_TYPE(decltype(s), std::span<const int, 3>);
+    assert(s.size() == std::size(arr));
+    assert(s.data() == std::data(arr));
+    }
+}
+
+void test_std_array() {
+    {
+    std::array<double, 4> arr = {1.0, 2.0, 3.0, 4.0};
+    std::span s{arr};
+    ASSERT_SAME_TYPE(decltype(s), std::span<double, 4>);
+    assert(s.size() == arr.size());
+    assert(s.data() == arr.data());
+    }
+
+    {
+    const std::array<long, 5> arr = {4, 5, 6, 7, 8};
+    std::span s{arr};
+    ASSERT_SAME_TYPE(decltype(s), std::span<const long, 5>);
+    assert(s.size() == arr.size());
+    assert(s.data() == arr.data());
+    }
+}
+
+void test_range_std_container() {
+    {
+    std::string str{"ABCDE"};
+    std::span s{str};
+    ASSERT_SAME_TYPE(decltype(s), std::span<char>);
+    assert(s.size() == str.size());
+    assert(s.data() == str.data());
+    }
+
+    {
+    const std::string str{"QWERTYUIOP"};
+    std::span s{str};
+    ASSERT_SAME_TYPE(decltype(s), std::span<const char>);
+    assert(s.size() == str.size());
+    assert(s.data() == str.data());
+    }
+}
+
+int main(int, char**)
+{
+  test_iterator_sentinel();
+  test_c_array();
+  test_std_array();
+  test_range_std_container();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/default.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/default.fail.cpp
new file mode 100644
index 0000000..2c62278
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/default.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr span() noexcept;
+//
+//  Remarks: This constructor shall not participate in overload resolution
+//          unless Extent == 0 || Extent == dynamic_extent is true.
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::span<int, 2> s; // expected-error {{no matching constructor for initialization of 'std::span<int, 2>'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/default.pass.cpp
new file mode 100644
index 0000000..7ae49c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/default.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr span() noexcept;
+
+#include <span>
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void checkCV()
+{
+//  Types the same (dynamic sized)
+    {
+    std::span<               int> s1;
+    std::span<const          int> s2;
+    std::span<      volatile int> s3;
+    std::span<const volatile int> s4;
+    assert(s1.size() + s2.size() + s3.size() + s4.size() == 0);
+    }
+
+//  Types the same (static sized)
+    {
+    std::span<               int,0> s1;
+    std::span<const          int,0> s2;
+    std::span<      volatile int,0> s3;
+    std::span<const volatile int,0> s4;
+    assert(s1.size() + s2.size() + s3.size() + s4.size() == 0);
+    }
+}
+
+
+template <typename T>
+constexpr bool testConstexprSpan()
+{
+    std::span<const T>    s1;
+    std::span<const T, 0> s2;
+    return
+        s1.data() == nullptr && s1.size() == 0
+    &&  s2.data() == nullptr && s2.size() == 0;
+}
+
+
+template <typename T>
+void testRuntimeSpan()
+{
+    ASSERT_NOEXCEPT(T{});
+    std::span<const T>    s1;
+    std::span<const T, 0> s2;
+    assert(s1.data() == nullptr && s1.size() == 0);
+    assert(s2.data() == nullptr && s2.size() == 0);
+}
+
+
+struct A{};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan<int>(),    "");
+    static_assert(testConstexprSpan<long>(),   "");
+    static_assert(testConstexprSpan<double>(), "");
+    static_assert(testConstexprSpan<A>(),      "");
+
+    testRuntimeSpan<int>();
+    testRuntimeSpan<long>();
+    testRuntimeSpan<double>();
+    testRuntimeSpan<std::string>();
+    testRuntimeSpan<A>();
+
+    checkCV();
+
+    static_assert( std::is_default_constructible_v<std::span<int, std::dynamic_extent>>, "");
+    static_assert( std::is_default_constructible_v<std::span<int, 0>>, "");
+    static_assert(!std::is_default_constructible_v<std::span<int, 2>>, "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..d0f4cc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/initializer_list.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+#include <span>
+#include <cassert>
+#include <cstddef>
+
+struct Sink {
+    constexpr Sink() = default;
+    constexpr Sink(Sink*) {}
+};
+
+constexpr std::size_t count(std::span<const Sink> sp) {
+    return sp.size();
+}
+
+template<int N>
+constexpr std::size_t countn(std::span<const Sink, N> sp) {
+    return sp.size();
+}
+
+constexpr bool test() {
+    Sink a[10];
+    assert(count({a}) == 10);
+    assert(count({a, a+10}) == 10);
+    assert(countn<10>({a}) == 10);
+    return true;
+}
+
+int main(int, char**) {
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_len.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_len.pass.cpp
new file mode 100644
index 0000000..f197330
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_len.pass.cpp
@@ -0,0 +1,68 @@
+//===---------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===---------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class It>
+// constexpr explicit(Extent != dynamic_extent) span(It first, size_type count);
+//  If Extent is not equal to dynamic_extent, then count shall be equal to Extent.
+//
+
+
+#include <span>
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+template <size_t Extent>
+constexpr void test_constructibility() {
+  struct Other {};
+  static_assert(std::is_constructible_v<std::span<int, Extent>, int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, const int*, size_t>);
+  static_assert(std::is_constructible_v<std::span<const int, Extent>, int*, size_t>);
+  static_assert(std::is_constructible_v<std::span<const int, Extent>, const int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, volatile int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, const volatile int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<const int, Extent>, volatile int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<const int, Extent>, const volatile int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<volatile int, Extent>, const int*, size_t>);
+  static_assert(!std::is_constructible_v<std::span<volatile int, Extent>, const volatile int*, size_t>);
+  static_assert(
+      !std::is_constructible_v<std::span<int, Extent>, double*, size_t>); // iterator type differs from span type
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, size_t, size_t>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, Other*, size_t>); // unrelated iterator type
+}
+
+template <class T>
+constexpr bool test_ctor() {
+  T val[2] = {};
+  auto s1 = std::span<T>(val, 2);
+  auto s2 = std::span<T, 2>(val, 2);
+  assert(s1.data() == std::data(val) && s1.size() == std::size(val));
+  assert(s2.data() == std::data(val) && s2.size() == std::size(val));
+  return true;
+}
+
+constexpr bool test() {
+  test_constructibility<std::dynamic_extent>();
+  test_constructibility<3>();
+
+  struct A {};
+  test_ctor<int>();
+  test_ctor<A>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_len.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_len.verify.cpp
new file mode 100644
index 0000000..0372e00
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_len.verify.cpp
@@ -0,0 +1,36 @@
+//===---------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===---------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class It>
+// constexpr explicit(Extent != dynamic_extent) span(It first, size_type count);
+//  If Extent is not equal to dynamic_extent, then count shall be equal to Extent.
+//
+
+#include <span>
+#include <cstddef>
+
+template <class T, size_t extent>
+std::span<T, extent> createImplicitSpan(T* ptr, size_t len) {
+  return {ptr, len}; // expected-error {{chosen constructor is explicit in copy-initialization}}
+}
+
+int main(int, char**) {
+  // explicit constructor necessary
+  int arr[] = {1, 2, 3};
+  createImplicitSpan<int, 1>(arr, 3);
+
+  std::span<int> sp = {0, 0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+  std::span<int, 2> sp2 = {0, 0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 2>'}}
+  std::span<const int> csp = {0, 0}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+  std::span<const int, 2> csp2 = {0, 0}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 2>'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_sentinel.pass.cpp
new file mode 100644
index 0000000..f744af7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_sentinel.pass.cpp
@@ -0,0 +1,63 @@
+//===---------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===---------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class It, class End>
+// constexpr explicit(Extent != dynamic_extent) span(It first, End last);
+// Requires: [first, last) shall be a valid range.
+//   If Extent is not equal to dynamic_extent, then last - first shall be equal to Extent.
+//
+
+#include <span>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class T, class Sentinel>
+constexpr bool test_ctor() {
+  T val[2] = {};
+  auto s1 = std::span<T>(std::begin(val), Sentinel(std::end(val)));
+  auto s2 = std::span<T, 2>(std::begin(val), Sentinel(std::end(val)));
+  assert(s1.data() == std::data(val) && s1.size() == std::size(val));
+  assert(s2.data() == std::data(val) && s2.size() == std::size(val));
+  return true;
+}
+
+template <size_t Extent>
+constexpr void test_constructibility() {
+  static_assert(std::is_constructible_v<std::span<int, Extent>, int*, int*>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, const int*, const int*>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, volatile int*, volatile int*>);
+  static_assert(std::is_constructible_v<std::span<const int, Extent>, int*, int*>);
+  static_assert(std::is_constructible_v<std::span<const int, Extent>, const int*, const int*>);
+  static_assert(!std::is_constructible_v<std::span<const int, Extent>, volatile int*, volatile int*>);
+  static_assert(std::is_constructible_v<std::span<volatile int, Extent>, int*, int*>);
+  static_assert(!std::is_constructible_v<std::span<volatile int, Extent>, const int*, const int*>);
+  static_assert(std::is_constructible_v<std::span<volatile int, Extent>, volatile int*, volatile int*>);
+  static_assert(!std::is_constructible_v<std::span<int, Extent>, int*, float*>); // types wrong
+}
+
+constexpr bool test() {
+  test_constructibility<std::dynamic_extent>();
+  test_constructibility<3>();
+  struct A {};
+  assert((test_ctor<int, int*>()));
+  assert((test_ctor<int, sized_sentinel<int*>>()));
+  assert((test_ctor<A, A*>()));
+  assert((test_ctor<A, sized_sentinel<A*>>()));
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_sentinel.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_sentinel.verify.cpp
new file mode 100644
index 0000000..9ac9a03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/iterator_sentinel.verify.cpp
@@ -0,0 +1,33 @@
+//===---------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===---------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class It, class End>
+// constexpr explicit(Extent != dynamic_extent) span(It first, End last);
+// Requires: [first, last) shall be a valid range.
+//   If Extent is not equal to dynamic_extent, then last - first shall be equal to Extent.
+//
+
+#include <span>
+#include <iterator>
+
+
+template<class T, size_t Extent>
+std::span<T, Extent> createImplicitSpan(T* first, T* last) {
+    return {first, last}; // expected-error {{chosen constructor is explicit in copy-initialization}}
+}
+
+int main(int, char**) {
+  // explicit constructor necessary
+  int arr[] = {1, 2, 3};
+  createImplicitSpan<int, 1>(std::begin(arr), std::end(arr));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/range.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/range.pass.cpp
new file mode 100644
index 0000000..d484754
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/range.pass.cpp
@@ -0,0 +1,82 @@
+//===---------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===---------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+//  template<class R>
+//    constexpr explicit(Extent != dynamic_extent) span(R&& r);
+
+
+#include <span>
+#include <cassert>
+#include <ranges>
+#include <string_view>
+#include <type_traits>
+#include <vector>
+
+#include "test_iterators.h"
+
+template <class T, size_t Extent>
+constexpr void test_from_range() {
+  T val[3]{};
+  std::span<T, Extent> s{val};
+  assert(s.size() == std::size(val));
+  assert(s.data() == std::data(val));
+}
+
+struct A {};
+
+constexpr bool test() {
+  test_from_range<int, std::dynamic_extent>();
+  test_from_range<int, 3>();
+  test_from_range<A, std::dynamic_extent>();
+  test_from_range<A, 3>();
+  return true;
+}
+
+static_assert(!std::is_constructible_v<std::span<int>, std::vector<float>&>);    // wrong type
+static_assert(!std::is_constructible_v<std::span<int, 3>, std::vector<float>&>); // wrong type
+
+static_assert(std::is_constructible_v<std::span<int>, std::vector<int>&>);                // non-borrowed lvalue
+static_assert(std::is_constructible_v<std::span<int, 3>, std::vector<int>&>);             // non-borrowed lvalue
+static_assert(std::is_constructible_v<std::span<const int>, std::vector<int>&>);          // non-borrowed lvalue
+static_assert(std::is_constructible_v<std::span<const int, 3>, std::vector<int>&>);       // non-borrowed lvalue
+static_assert(!std::is_constructible_v<std::span<int>, const std::vector<int>&>);         // non-borrowed const lvalue
+static_assert(!std::is_constructible_v<std::span<int, 3>, const std::vector<int>&>);      // non-borrowed const lvalue
+static_assert(std::is_constructible_v<std::span<const int>, const std::vector<int>&>);    // non-borrowed const lvalue
+static_assert(std::is_constructible_v<std::span<const int, 3>, const std::vector<int>&>); // non-borrowed const lvalue
+static_assert(std::is_constructible_v<std::span<const int>, std::vector<int>>);           // non-borrowed rvalue
+static_assert(std::is_constructible_v<std::span<const int, 3>, std::vector<int>>);        // non-borrowed rvalue
+static_assert(!std::is_constructible_v<std::span<int>, std::vector<int>&&>);              // non-borrowed rvalue
+static_assert(!std::is_constructible_v<std::span<int, 3>, std::vector<int>&&>);           // non-borrowed rvalue
+
+static_assert(std::is_constructible_v<std::span<int>, std::ranges::subrange<contiguous_iterator<int*>>>);         // contiguous borrowed rvalue
+static_assert(std::is_constructible_v<std::span<int, 3>, std::ranges::subrange<contiguous_iterator<int*>>>);      // contiguous borrowed rvalue
+static_assert(!std::is_constructible_v<std::span<int>, std::ranges::subrange<random_access_iterator<int*>>>);     // non-contiguous borrowed rvalue
+static_assert(!std::is_constructible_v<std::span<int, 3>, std::ranges::subrange<random_access_iterator<int*>>>);  // non-contiguous borrowed rvalue
+
+using BorrowedContiguousSizedRange = std::string_view;
+static_assert(std::is_constructible_v<std::span<const char>, BorrowedContiguousSizedRange>);
+static_assert(std::is_constructible_v<std::span<const char, 3>, BorrowedContiguousSizedRange>);
+static_assert(!std::is_constructible_v<std::span<char>, BorrowedContiguousSizedRange>);
+static_assert(!std::is_constructible_v<std::span<char, 3>, BorrowedContiguousSizedRange>);
+
+static_assert(std::is_convertible_v<BorrowedContiguousSizedRange&, std::span<const char>>);
+static_assert(!std::is_convertible_v<BorrowedContiguousSizedRange&, std::span<const char, 3>>);
+static_assert(!std::is_convertible_v<BorrowedContiguousSizedRange&, std::span<char>>);
+static_assert(!std::is_convertible_v<BorrowedContiguousSizedRange&, std::span<char, 3>>);
+static_assert(std::is_convertible_v<const BorrowedContiguousSizedRange&, std::span<const char>>);
+static_assert(!std::is_convertible_v<const BorrowedContiguousSizedRange&, std::span<const char, 3>>);
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.dtor.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.dtor.compile.pass.cpp
new file mode 100644
index 0000000..f87aee1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.dtor.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// ~span() = default;
+
+#include <span>
+#include <type_traits>
+
+template <class T>
+constexpr void testDestructor() {
+  static_assert(std::is_nothrow_destructible_v<T>);
+  static_assert(std::is_trivially_destructible_v<T>);
+}
+
+void test() {
+  testDestructor<std::span<int, 1>>();
+  testDestructor<std::span<int>>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.fail.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.fail.cpp
new file mode 100644
index 0000000..c3c3631
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.fail.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<class OtherElementType, size_t OtherExtent>
+//    constexpr span(const span<OtherElementType, OtherExtent>& s) noexcept;
+//
+//  Remarks: This constructor shall not participate in overload resolution unless:
+//      Extent == dynamic_extent || Extent == OtherExtent is true, and
+//      OtherElementType(*)[] is convertible to ElementType(*)[].
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template<class T, size_t extent, size_t otherExtent>
+std::span<T, extent> createImplicitSpan(std::span<T, otherExtent> s) {
+    return {s}; // expected-error {{chosen constructor is explicit in copy-initialization}}
+}
+
+void checkCV ()
+{
+//  std::span<               int>   sp;
+    std::span<const          int>  csp;
+    std::span<      volatile int>  vsp;
+    std::span<const volatile int> cvsp;
+
+//  std::span<               int, 0>   sp0;
+    std::span<const          int, 0>  csp0;
+    std::span<      volatile int, 0>  vsp0;
+    std::span<const volatile int, 0> cvsp0;
+
+//  Try to remove const and/or volatile (dynamic -> dynamic)
+    {
+    std::span<               int> s1{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<               int> s2{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<               int> s3{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+
+    std::span<const          int> s4{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+    std::span<const          int> s5{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+
+    std::span<      volatile int> s6{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
+    std::span<      volatile int> s7{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
+    }
+
+//  Try to remove const and/or volatile (static -> static)
+    {
+    std::span<               int, 0> s1{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
+    std::span<               int, 0> s2{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
+    std::span<               int, 0> s3{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
+
+    std::span<const          int, 0> s4{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
+    std::span<const          int, 0> s5{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
+
+    std::span<      volatile int, 0> s6{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
+    std::span<      volatile int, 0> s7{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
+    }
+
+//  Try to remove const and/or volatile (static -> dynamic)
+    {
+    std::span<               int> s1{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<               int> s2{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+    std::span<               int> s3{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
+
+    std::span<const          int> s4{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+    std::span<const          int> s5{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
+
+    std::span<      volatile int> s6{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
+    std::span<      volatile int> s7{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
+    }
+
+//  Try to remove const and/or volatile (static -> static)
+    {
+    std::span<               int, 0> s1{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
+    std::span<               int, 0> s2{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
+    std::span<               int, 0> s3{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
+
+    std::span<const          int, 0> s4{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
+    std::span<const          int, 0> s5{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
+
+    std::span<      volatile int, 0> s6{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
+    std::span<      volatile int, 0> s7{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
+    }
+}
+
+int main(int, char**)
+{
+    std::span<int>      sp;
+    std::span<int, 0>   sp0;
+
+    std::span<float> s1{sp};    // expected-error {{no matching constructor for initialization of 'std::span<float>'}}
+    std::span<float> s2{sp0};   // expected-error {{no matching constructor for initialization of 'std::span<float>'}}
+    std::span<float, 0> s3{sp}; // expected-error {{no matching constructor for initialization of 'std::span<float, 0>'}}
+    std::span<float, 0> s4{sp0};    // expected-error {{no matching constructor for initialization of 'std::span<float, 0>'}}
+
+    checkCV();
+
+    // explicit constructor necessary
+    {
+    createImplicitSpan<int, 1>(sp);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.pass.cpp
new file mode 100644
index 0000000..edf983e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/span.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<class OtherElementType, size_t OtherExtent>
+//    constexpr span(const span<OtherElementType, OtherExtent>& s) noexcept;
+//
+//  Remarks: This constructor shall not participate in overload resolution unless:
+//      Extent == dynamic_extent || Extent == OtherExtent is true, and
+//      OtherElementType(*)[] is convertible to ElementType(*)[].
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+void checkCV()
+{
+    std::span<               int>   sp;
+//  std::span<const          int>  csp;
+    std::span<      volatile int>  vsp;
+//  std::span<const volatile int> cvsp;
+
+    std::span<               int, 0>   sp0;
+//  std::span<const          int, 0>  csp0;
+    std::span<      volatile int, 0>  vsp0;
+//  std::span<const volatile int, 0> cvsp0;
+
+//  dynamic -> dynamic
+    {
+        std::span<const          int> s1{  sp}; // a span<const          int> pointing at int.
+        std::span<      volatile int> s2{  sp}; // a span<      volatile int> pointing at int.
+        std::span<const volatile int> s3{  sp}; // a span<const volatile int> pointing at int.
+        std::span<const volatile int> s4{ vsp}; // a span<const volatile int> pointing at volatile int.
+        assert(s1.size() + s2.size() + s3.size() + s4.size() == 0);
+    }
+
+//  static -> static
+    {
+        std::span<const          int, 0> s1{  sp0}; // a span<const          int> pointing at int.
+        std::span<      volatile int, 0> s2{  sp0}; // a span<      volatile int> pointing at int.
+        std::span<const volatile int, 0> s3{  sp0}; // a span<const volatile int> pointing at int.
+        std::span<const volatile int, 0> s4{ vsp0}; // a span<const volatile int> pointing at volatile int.
+        assert(s1.size() + s2.size() + s3.size() + s4.size() == 0);
+    }
+
+//  static -> dynamic
+    {
+        std::span<const          int> s1{  sp0};    // a span<const          int> pointing at int.
+        std::span<      volatile int> s2{  sp0};    // a span<      volatile int> pointing at int.
+        std::span<const volatile int> s3{  sp0};    // a span<const volatile int> pointing at int.
+        std::span<const volatile int> s4{ vsp0};    // a span<const volatile int> pointing at volatile int.
+        assert(s1.size() + s2.size() + s3.size() + s4.size() == 0);
+    }
+
+//  dynamic -> static (not allowed)
+}
+
+
+template <typename T>
+constexpr bool testConstexprSpan()
+{
+    std::span<T>    s0{};
+    std::span<T, 0> s1{};
+    std::span<T>    s2(s1); // static -> dynamic
+    ASSERT_NOEXCEPT(std::span<T>   {s0});
+    ASSERT_NOEXCEPT(std::span<T, 0>{s1});
+    ASSERT_NOEXCEPT(std::span<T>   {s1});
+
+    return
+        s1.data() == nullptr && s1.size() == 0
+    &&  s2.data() == nullptr && s2.size() == 0;
+}
+
+
+template <typename T>
+void testRuntimeSpan()
+{
+    std::span<T>    s0{};
+    std::span<T, 0> s1{};
+    std::span<T>    s2(s1); // static -> dynamic
+    ASSERT_NOEXCEPT(std::span<T>   {s0});
+    ASSERT_NOEXCEPT(std::span<T, 0>{s1});
+    ASSERT_NOEXCEPT(std::span<T>   {s1});
+
+    assert(s1.data() == nullptr && s1.size() == 0);
+    assert(s2.data() == nullptr && s2.size() == 0);
+}
+
+
+struct A{};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan<int>(),    "");
+    static_assert(testConstexprSpan<long>(),   "");
+    static_assert(testConstexprSpan<double>(), "");
+    static_assert(testConstexprSpan<A>(),      "");
+
+    testRuntimeSpan<int>();
+    testRuntimeSpan<long>();
+    testRuntimeSpan<double>();
+    testRuntimeSpan<std::string>();
+    testRuntimeSpan<A>();
+
+    checkCV();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/stdarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/stdarray.pass.cpp
new file mode 100644
index 0000000..97aa349
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.cons/stdarray.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t N>
+//     constexpr span(array<value_type, N>& arr) noexcept;
+// template<size_t N>
+//     constexpr span(const array<value_type, N>& arr) noexcept;
+//
+// Remarks: These constructors shall not participate in overload resolution unless:
+//   - extent == dynamic_extent || N == extent is true, and
+//   - remove_pointer_t<decltype(data(arr))>(*)[] is convertible to ElementType(*)[].
+//
+
+
+#include <span>
+#include <array>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+void checkCV()
+{
+    std::array<int, 3> arr  = {1,2,3};
+//  STL says these are not cromulent
+//  std::array<const int,3> carr = {4,5,6};
+//  std::array<volatile int, 3> varr = {7,8,9};
+//  std::array<const volatile int, 3> cvarr = {1,3,5};
+
+//  Types the same (dynamic sized)
+    {
+    std::span<               int> s1{  arr};    // a span<               int> pointing at int.
+    }
+
+//  Types the same (static sized)
+    {
+    std::span<               int,3> s1{  arr};  // a span<               int> pointing at int.
+    }
+
+
+//  types different (dynamic sized)
+    {
+    std::span<const          int> s1{ arr};     // a span<const          int> pointing at int.
+    std::span<      volatile int> s2{ arr};     // a span<      volatile int> pointing at int.
+    std::span<      volatile int> s3{ arr};     // a span<      volatile int> pointing at const int.
+    std::span<const volatile int> s4{ arr};     // a span<const volatile int> pointing at int.
+    }
+
+//  types different (static sized)
+    {
+    std::span<const          int,3> s1{ arr};   // a span<const          int> pointing at int.
+    std::span<      volatile int,3> s2{ arr};   // a span<      volatile int> pointing at int.
+    std::span<      volatile int,3> s3{ arr};   // a span<      volatile int> pointing at const int.
+    std::span<const volatile int,3> s4{ arr};   // a span<const volatile int> pointing at int.
+    }
+}
+
+template <typename T, typename U>
+constexpr bool testConstructorArray() {
+  std::array<U, 2> val = {U(), U()};
+  ASSERT_NOEXCEPT(std::span<T>{val});
+  ASSERT_NOEXCEPT(std::span<T, 2>{val});
+  std::span<T> s1{val};
+  std::span<T, 2> s2{val};
+  return s1.data() == &val[0] && s1.size() == 2 && s2.data() == &val[0] &&
+         s2.size() == 2;
+}
+
+template <typename T, typename U>
+constexpr bool testConstructorConstArray() {
+  const std::array<U, 2> val = {U(), U()};
+  ASSERT_NOEXCEPT(std::span<const T>{val});
+  ASSERT_NOEXCEPT(std::span<const T, 2>{val});
+  std::span<const T> s1{val};
+  std::span<const T, 2> s2{val};
+  return s1.data() == &val[0] && s1.size() == 2 && s2.data() == &val[0] &&
+         s2.size() == 2;
+}
+
+template <typename T>
+constexpr bool testConstructors() {
+  static_assert(testConstructorArray<T, T>(), "");
+  static_assert(testConstructorArray<const T, const T>(), "");
+  static_assert(testConstructorArray<const T, T>(), "");
+  static_assert(testConstructorConstArray<T, T>(), "");
+  static_assert(testConstructorConstArray<const T, const T>(), "");
+  static_assert(testConstructorConstArray<const T, T>(), "");
+
+  return testConstructorArray<T, T>() &&
+         testConstructorArray<const T, const T>() &&
+         testConstructorArray<const T, T>() &&
+         testConstructorConstArray<T, T>() &&
+         testConstructorConstArray<const T, const T>() &&
+         testConstructorConstArray<const T, T>();
+}
+
+struct A{};
+
+int main(int, char**)
+{
+    assert(testConstructors<int>());
+    assert(testConstructors<long>());
+    assert(testConstructors<double>());
+    assert(testConstructors<A>());
+
+    assert(testConstructors<int*>());
+    assert(testConstructors<const int*>());
+
+    checkCV();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/back.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/back.pass.cpp
new file mode 100644
index 0000000..dfc01d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/back.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr reference back() const noexcept;
+//   Expects: empty() is false.
+//   Effects: Equivalent to: return *(data() + (size() - 1));
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+template <typename Span>
+constexpr bool testConstexprSpan(Span sp)
+{
+    LIBCPP_ASSERT(noexcept(sp.back()));
+    return std::addressof(sp.back()) == sp.data() + sp.size() - 1;
+}
+
+template <typename Span>
+void testRuntimeSpan(Span sp)
+{
+    LIBCPP_ASSERT(noexcept(sp.back()));
+    assert(std::addressof(sp.back()) == sp.data() + sp.size() - 1);
+}
+
+template <typename Span>
+void testEmptySpan(Span sp)
+{
+    if (!sp.empty())
+        [[maybe_unused]] auto res = sp.back();
+}
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1)), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2)), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3)), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4)), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 1>(iArr1, 1)), "");
+    static_assert(testConstexprSpan(std::span<const int, 2>(iArr1, 2)), "");
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1, 3)), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4)), "");
+
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+
+
+    testRuntimeSpan(std::span<int, 1>(iArr2, 1));
+    testRuntimeSpan(std::span<int, 2>(iArr2, 2));
+    testRuntimeSpan(std::span<int, 3>(iArr2, 3));
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>   (&s, 1));
+    testRuntimeSpan(std::span<std::string, 1>(&s, 1));
+
+    std::span<int, 0> sp;
+    testEmptySpan(sp);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/data.pass.cpp
new file mode 100644
index 0000000..1bf63f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/data.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr pointer data() const noexcept;
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+template <typename Span>
+constexpr bool testConstexprSpan(Span sp, typename Span::pointer ptr)
+{
+    ASSERT_NOEXCEPT(sp.data());
+    return sp.data() == ptr;
+}
+
+
+template <typename Span>
+void testRuntimeSpan(Span sp, typename Span::pointer ptr)
+{
+    ASSERT_NOEXCEPT(sp.data());
+    assert(sp.data() == ptr);
+}
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+
+//  dynamic size
+    static_assert(testConstexprSpan(std::span<int>(), nullptr),         "");
+    static_assert(testConstexprSpan(std::span<long>(), nullptr),        "");
+    static_assert(testConstexprSpan(std::span<double>(), nullptr),      "");
+    static_assert(testConstexprSpan(std::span<A>(), nullptr),           "");
+    static_assert(testConstexprSpan(std::span<std::string>(), nullptr), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1), iArr1), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2), iArr1), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3), iArr1), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), iArr1), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1 + 1, 1), iArr1 + 1), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1 + 2, 2), iArr1 + 2), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1 + 3, 3), iArr1 + 3), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1 + 4, 4), iArr1 + 4), "");
+
+//  static size
+    static_assert(testConstexprSpan(std::span<int, 0>(), nullptr),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>(), nullptr),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>(), nullptr),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>(), nullptr),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>(), nullptr), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 1>(iArr1, 1), iArr1), "");
+    static_assert(testConstexprSpan(std::span<const int, 2>(iArr1, 2), iArr1), "");
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1, 3), iArr1), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4), iArr1), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 1>(iArr1 + 1, 1), iArr1 + 1), "");
+    static_assert(testConstexprSpan(std::span<const int, 2>(iArr1 + 2, 2), iArr1 + 2), "");
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1 + 3, 3), iArr1 + 3), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1 + 4, 4), iArr1 + 4), "");
+
+
+//  dynamic size
+    testRuntimeSpan(std::span<int>(), nullptr);
+    testRuntimeSpan(std::span<long>(), nullptr);
+    testRuntimeSpan(std::span<double>(), nullptr);
+    testRuntimeSpan(std::span<A>(), nullptr);
+    testRuntimeSpan(std::span<std::string>(), nullptr);
+
+    testRuntimeSpan(std::span<int>(iArr2, 1), iArr2);
+    testRuntimeSpan(std::span<int>(iArr2, 2), iArr2);
+    testRuntimeSpan(std::span<int>(iArr2, 3), iArr2);
+    testRuntimeSpan(std::span<int>(iArr2, 4), iArr2);
+
+    testRuntimeSpan(std::span<int>(iArr2 + 1, 1), iArr2 + 1);
+    testRuntimeSpan(std::span<int>(iArr2 + 2, 2), iArr2 + 2);
+    testRuntimeSpan(std::span<int>(iArr2 + 3, 3), iArr2 + 3);
+    testRuntimeSpan(std::span<int>(iArr2 + 4, 4), iArr2 + 4);
+
+//  static size
+    testRuntimeSpan(std::span<int, 0>(), nullptr);
+    testRuntimeSpan(std::span<long, 0>(), nullptr);
+    testRuntimeSpan(std::span<double, 0>(), nullptr);
+    testRuntimeSpan(std::span<A, 0>(), nullptr);
+    testRuntimeSpan(std::span<std::string, 0>(), nullptr);
+
+    testRuntimeSpan(std::span<int, 1>(iArr2, 1), iArr2);
+    testRuntimeSpan(std::span<int, 2>(iArr2, 2), iArr2);
+    testRuntimeSpan(std::span<int, 3>(iArr2, 3), iArr2);
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4), iArr2);
+
+    testRuntimeSpan(std::span<int, 1>(iArr2 + 1, 1), iArr2 + 1);
+    testRuntimeSpan(std::span<int, 2>(iArr2 + 2, 2), iArr2 + 2);
+    testRuntimeSpan(std::span<int, 3>(iArr2 + 3, 3), iArr2 + 3);
+    testRuntimeSpan(std::span<int, 4>(iArr2 + 4, 4), iArr2 + 4);
+
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, 1), &s);
+    testRuntimeSpan(std::span<std::string, 1>(&s, 1), &s);
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/front.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/front.pass.cpp
new file mode 100644
index 0000000..e1c9a0c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/front.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr reference front() const noexcept;
+//   Expects: empty() is false.
+//   Effects: Equivalent to: return *data();
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+template <typename Span>
+constexpr bool testConstexprSpan(Span sp)
+{
+    LIBCPP_ASSERT(noexcept(sp.front()));
+    return std::addressof(sp.front()) == sp.data();
+}
+
+
+template <typename Span>
+void testRuntimeSpan(Span sp)
+{
+    LIBCPP_ASSERT(noexcept(sp.front()));
+    assert(std::addressof(sp.front()) == sp.data());
+}
+
+template <typename Span>
+void testEmptySpan(Span sp)
+{
+    if (!sp.empty())
+        [[maybe_unused]] auto res = sp.front();
+}
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1)), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2)), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3)), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4)), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 1>(iArr1, 1)), "");
+    static_assert(testConstexprSpan(std::span<const int, 2>(iArr1, 2)), "");
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1, 3)), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4)), "");
+
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+
+
+    testRuntimeSpan(std::span<int, 1>(iArr2, 1));
+    testRuntimeSpan(std::span<int, 2>(iArr2, 2));
+    testRuntimeSpan(std::span<int, 3>(iArr2, 3));
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>   (&s, 1));
+    testRuntimeSpan(std::span<std::string, 1>(&s, 1));
+
+    std::span<int, 0> sp;
+    testEmptySpan(sp);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/op_idx.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/op_idx.pass.cpp
new file mode 100644
index 0000000..fdafbfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.elem/op_idx.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr reference operator[](size_type idx) const;
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+template <typename Span>
+constexpr bool testConstexprSpan(Span sp, size_t idx)
+{
+    LIBCPP_ASSERT(noexcept(sp[idx]));
+
+    typename Span::reference r1 = sp[idx];
+    typename Span::reference r2 = *(sp.data() + idx);
+    return r1 == r2;
+}
+
+
+template <typename Span>
+void testRuntimeSpan(Span sp, size_t idx)
+{
+    LIBCPP_ASSERT(noexcept(sp[idx]));
+
+    typename Span::reference r1 = sp[idx];
+    typename Span::reference r2 = *(sp.data() + idx);
+    assert(r1 == r2);
+}
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1), 0), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2), 0), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2), 1), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3), 0), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3), 1), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3), 2), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), 0), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), 1), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), 2), "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), 3), "");
+
+
+    static_assert(testConstexprSpan(std::span<const int, 1>(iArr1, 1), 0), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 2>(iArr1, 2), 0), "");
+    static_assert(testConstexprSpan(std::span<const int, 2>(iArr1, 2), 1), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1, 3), 0), "");
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1, 3), 1), "");
+    static_assert(testConstexprSpan(std::span<const int, 3>(iArr1, 3), 2), "");
+
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4), 0), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4), 1), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4), 2), "");
+    static_assert(testConstexprSpan(std::span<const int, 4>(iArr1, 4), 3), "");
+
+
+    testRuntimeSpan(std::span<int>(iArr2, 1), 0);
+
+    testRuntimeSpan(std::span<int>(iArr2, 2), 0);
+    testRuntimeSpan(std::span<int>(iArr2, 2), 1);
+
+    testRuntimeSpan(std::span<int>(iArr2, 3), 0);
+    testRuntimeSpan(std::span<int>(iArr2, 3), 1);
+    testRuntimeSpan(std::span<int>(iArr2, 3), 2);
+
+    testRuntimeSpan(std::span<int>(iArr2, 4), 0);
+    testRuntimeSpan(std::span<int>(iArr2, 4), 1);
+    testRuntimeSpan(std::span<int>(iArr2, 4), 2);
+    testRuntimeSpan(std::span<int>(iArr2, 4), 3);
+
+
+    testRuntimeSpan(std::span<int, 1>(iArr2, 1), 0);
+
+    testRuntimeSpan(std::span<int, 2>(iArr2, 2), 0);
+    testRuntimeSpan(std::span<int, 2>(iArr2, 2), 1);
+
+    testRuntimeSpan(std::span<int, 3>(iArr2, 3), 0);
+    testRuntimeSpan(std::span<int, 3>(iArr2, 3), 1);
+    testRuntimeSpan(std::span<int, 3>(iArr2, 3), 2);
+
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4), 0);
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4), 1);
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4), 2);
+    testRuntimeSpan(std::span<int, 4>(iArr2, 4), 3);
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>   (&s, 1), 0);
+    testRuntimeSpan(std::span<std::string, 1>(&s, 1), 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/begin.pass.cpp
new file mode 100644
index 0000000..f6b2401
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/begin.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr       iterator  begin() const noexcept;
+// constexpr const_iterator cbegin() const noexcept;
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template <class Span>
+constexpr bool testConstexprSpan(Span s)
+{
+    bool ret = true;
+    typename Span::iterator b = s.begin();
+
+    if (s.empty())
+    {
+        ret = ret && (b == s.end());
+    }
+    else
+    {
+        ret = ret && ( *b ==  s[0]);
+        ret = ret && (&*b == &s[0]);
+    }
+    return ret;
+}
+
+
+template <class Span>
+void testRuntimeSpan(Span s)
+{
+    typename Span::iterator b = s.begin();
+
+    if (s.empty())
+    {
+        assert(b == s.end());
+    }
+    else
+    {
+        assert( *b ==  s[0]);
+        assert(&*b == &s[0]);
+    }
+}
+
+struct A{};
+bool operator==(A, A) {return true;}
+
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<int>()),            "");
+    static_assert(testConstexprSpan(std::span<long>()),           "");
+    static_assert(testConstexprSpan(std::span<double>()),         "");
+    static_assert(testConstexprSpan(std::span<A>()),              "");
+    static_assert(testConstexprSpan(std::span<std::string>()),    "");
+
+    static_assert(testConstexprSpan(std::span<int, 0>()),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>()),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>()),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>()),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>()), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 5)),    "");
+
+
+    testRuntimeSpan(std::span<int>        ());
+    testRuntimeSpan(std::span<long>       ());
+    testRuntimeSpan(std::span<double>     ());
+    testRuntimeSpan(std::span<A>          ());
+    testRuntimeSpan(std::span<std::string>());
+
+    testRuntimeSpan(std::span<int, 0>        ());
+    testRuntimeSpan(std::span<long, 0>       ());
+    testRuntimeSpan(std::span<double, 0>     ());
+    testRuntimeSpan(std::span<A, 0>          ());
+    testRuntimeSpan(std::span<std::string, 0>());
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+    testRuntimeSpan(std::span<int>(iArr2, 5));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0));
+    testRuntimeSpan(std::span<std::string>(&s, 1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/end.pass.cpp
new file mode 100644
index 0000000..d531537
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/end.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr       iterator  end() const noexcept;
+// constexpr const_iterator cend() const noexcept;
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template <class Span>
+constexpr bool testConstexprSpan(Span s)
+{
+    bool ret = true;
+    typename Span::iterator e = s.end();
+    if (s.empty())
+    {
+        ret = ret &&  (e == s.begin());
+    }
+    else
+    {
+        typename Span::const_pointer last = &*(s.begin() + s.size() - 1);
+        ret = ret &&  (e != s.begin());
+        ret = ret &&  (&*( e-1) == last);
+    }
+
+    ret = ret &&  (static_cast<size_t>(e - s.begin()) == s.size());
+    return ret;
+}
+
+template <class Span>
+void testRuntimeSpan(Span s)
+{
+    typename Span::iterator e = s.end();
+    if (s.empty())
+    {
+        assert(e == s.begin());
+    }
+    else
+    {
+        typename Span::const_pointer last = &*(s.begin() + s.size() - 1);
+        assert(e != s.begin());
+        assert(&*( e-1) == last);
+    }
+
+    assert(static_cast<size_t>(e - s.begin()) == s.size());
+}
+
+
+struct A{};
+bool operator==(A, A) {return true;}
+
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<int>()),            "");
+    static_assert(testConstexprSpan(std::span<long>()),           "");
+    static_assert(testConstexprSpan(std::span<double>()),         "");
+    static_assert(testConstexprSpan(std::span<A>()),              "");
+    static_assert(testConstexprSpan(std::span<std::string>()),    "");
+
+    static_assert(testConstexprSpan(std::span<int, 0>()),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>()),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>()),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>()),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>()), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 5)),    "");
+
+
+    testRuntimeSpan(std::span<int>        ());
+    testRuntimeSpan(std::span<long>       ());
+    testRuntimeSpan(std::span<double>     ());
+    testRuntimeSpan(std::span<A>          ());
+    testRuntimeSpan(std::span<std::string>());
+
+    testRuntimeSpan(std::span<int, 0>        ());
+    testRuntimeSpan(std::span<long, 0>       ());
+    testRuntimeSpan(std::span<double, 0>     ());
+    testRuntimeSpan(std::span<A, 0>          ());
+    testRuntimeSpan(std::span<std::string, 0>());
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+    testRuntimeSpan(std::span<int>(iArr2, 5));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0));
+    testRuntimeSpan(std::span<std::string>(&s, 1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..1621510
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, reverse_iterator
+
+#include <span>
+
+#include <iterator>
+#include "test_macros.h"
+
+using iterator = std::span<int>::iterator;
+using reverse_iterator = std::span<int>::reverse_iterator;
+using value_type = int;
+
+static_assert(std::contiguous_iterator<iterator>);
+LIBCPP_STATIC_ASSERT(std::__is_cpp17_random_access_iterator<iterator>::value);
+static_assert(std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(std::indirectly_movable<iterator, int*>);
+static_assert(std::indirectly_movable_storable<iterator, int*>);
+static_assert(std::indirectly_copyable<iterator, int*>);
+static_assert(std::indirectly_copyable_storable<iterator, int*>);
+static_assert(std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/rbegin.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/rbegin.pass.cpp
new file mode 100644
index 0000000..26e4389
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/rbegin.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr       reverse_iterator  rbegin() const noexcept;
+// constexpr const_reverse_iterator crbegin() const noexcept;
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template <class Span>
+constexpr bool testConstexprSpan(Span s)
+{
+    bool ret = true;
+    typename Span::reverse_iterator b = s.rbegin();
+    if (s.empty())
+    {
+        ret = ret &&  ( b ==  s.rend());
+    }
+    else
+    {
+        const typename Span::size_type last = s.size() - 1;
+        ret = ret && ( *b ==  s[last]);
+        ret = ret && (&*b == &s[last]);
+    }
+    return ret;
+}
+
+
+template <class Span>
+void testRuntimeSpan(Span s)
+{
+    typename Span::reverse_iterator b = s.rbegin();
+    if (s.empty())
+    {
+        assert(b == s.rend());
+    }
+    else
+    {
+        const typename Span::size_type last = s.size() - 1;
+        assert( *b ==  s[last]);
+        assert(&*b == &s[last]);
+    }
+}
+
+
+struct A{};
+bool operator==(A, A) {return true;}
+
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<int>()),            "");
+    static_assert(testConstexprSpan(std::span<long>()),           "");
+    static_assert(testConstexprSpan(std::span<double>()),         "");
+    static_assert(testConstexprSpan(std::span<A>()),              "");
+    static_assert(testConstexprSpan(std::span<std::string>()),    "");
+
+    static_assert(testConstexprSpan(std::span<int, 0>()),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>()),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>()),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>()),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>()), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 5)),    "");
+
+
+    testRuntimeSpan(std::span<int>        ());
+    testRuntimeSpan(std::span<long>       ());
+    testRuntimeSpan(std::span<double>     ());
+    testRuntimeSpan(std::span<A>          ());
+    testRuntimeSpan(std::span<std::string>());
+
+    testRuntimeSpan(std::span<int, 0>        ());
+    testRuntimeSpan(std::span<long, 0>       ());
+    testRuntimeSpan(std::span<double, 0>     ());
+    testRuntimeSpan(std::span<A, 0>          ());
+    testRuntimeSpan(std::span<std::string, 0>());
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+    testRuntimeSpan(std::span<int>(iArr2, 5));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, static_cast<std::size_t>(0)));
+    testRuntimeSpan(std::span<std::string>(&s, 1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/rend.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/rend.pass.cpp
new file mode 100644
index 0000000..c2bd13a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.iterators/rend.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr       reverse_iterator  rend() const noexcept;
+// constexpr const_reverse_iterator crend() const noexcept;
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template <class Span>
+constexpr bool testConstexprSpan(Span s)
+{
+    bool ret = true;
+    typename Span::reverse_iterator e = s.rend();
+    if (s.empty())
+    {
+        ret = ret &&  (e == s.rbegin());
+    }
+    else
+    {
+        ret = ret &&  (e != s.rbegin());
+    }
+
+    ret = ret &&  (static_cast<size_t>(e - s.rbegin()) == s.size());
+    return ret;
+}
+
+template <class Span>
+void testRuntimeSpan(Span s)
+{
+    typename Span::reverse_iterator e = s.rend();
+    if (s.empty())
+    {
+        assert(e == s.rbegin());
+    }
+    else
+    {
+        assert(e != s.rbegin());
+    }
+
+    assert(static_cast<size_t>(e - s.rbegin()) == s.size());
+}
+
+
+struct A{};
+bool operator==(A, A) {return true;}
+
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<int>()),            "");
+    static_assert(testConstexprSpan(std::span<long>()),           "");
+    static_assert(testConstexprSpan(std::span<double>()),         "");
+    static_assert(testConstexprSpan(std::span<A>()),              "");
+    static_assert(testConstexprSpan(std::span<std::string>()),    "");
+
+    static_assert(testConstexprSpan(std::span<int, 0>()),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>()),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>()),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>()),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>()), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4)),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 5)),    "");
+
+
+    testRuntimeSpan(std::span<int>        ());
+    testRuntimeSpan(std::span<long>       ());
+    testRuntimeSpan(std::span<double>     ());
+    testRuntimeSpan(std::span<A>          ());
+    testRuntimeSpan(std::span<std::string>());
+
+    testRuntimeSpan(std::span<int, 0>        ());
+    testRuntimeSpan(std::span<long, 0>       ());
+    testRuntimeSpan(std::span<double, 0>     ());
+    testRuntimeSpan(std::span<A, 0>          ());
+    testRuntimeSpan(std::span<std::string, 0>());
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+    testRuntimeSpan(std::span<int>(iArr2, 5));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0));
+    testRuntimeSpan(std::span<std::string>(&s, 1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_bytes.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_bytes.pass.cpp
new file mode 100644
index 0000000..1f58d0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_bytes.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class ElementType, size_t Extent>
+//     span<const byte,
+//          Extent == dynamic_extent
+//              ? dynamic_extent
+//              : sizeof(ElementType) * Extent>
+//     as_bytes(span<ElementType, Extent> s) noexcept;
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template<typename Span>
+void testRuntimeSpan(Span sp)
+{
+    ASSERT_NOEXCEPT(std::as_bytes(sp));
+
+    auto spBytes = std::as_bytes(sp);
+    using SB = decltype(spBytes);
+    ASSERT_SAME_TYPE(const std::byte, typename SB::element_type);
+
+    if constexpr (sp.extent == std::dynamic_extent)
+        assert(spBytes.extent == std::dynamic_extent);
+    else
+        assert(spBytes.extent == sizeof(typename Span::element_type) * sp.extent);
+
+    assert((void *) spBytes.data() == (void *) sp.data());
+    assert(spBytes.size() == sp.size_bytes());
+}
+
+struct A{};
+int iArr2[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+
+int main(int, char**)
+{
+    testRuntimeSpan(std::span<int>        ());
+    testRuntimeSpan(std::span<long>       ());
+    testRuntimeSpan(std::span<double>     ());
+    testRuntimeSpan(std::span<A>          ());
+    testRuntimeSpan(std::span<std::string>());
+
+    testRuntimeSpan(std::span<int, 0>        ());
+    testRuntimeSpan(std::span<long, 0>       ());
+    testRuntimeSpan(std::span<double, 0>     ());
+    testRuntimeSpan(std::span<A, 0>          ());
+    testRuntimeSpan(std::span<std::string, 0>());
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+    testRuntimeSpan(std::span<int>(iArr2, 5));
+
+    testRuntimeSpan(std::span<int, 1>(iArr2 + 5, 1));
+    testRuntimeSpan(std::span<int, 2>(iArr2 + 4, 2));
+    testRuntimeSpan(std::span<int, 3>(iArr2 + 3, 3));
+    testRuntimeSpan(std::span<int, 4>(iArr2 + 2, 4));
+    testRuntimeSpan(std::span<int, 5>(iArr2 + 1, 5));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0));
+    testRuntimeSpan(std::span<std::string>(&s, 1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_writable_bytes.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_writable_bytes.pass.cpp
new file mode 100644
index 0000000..6b7bd5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_writable_bytes.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class ElementType, size_t Extent>
+//     span<byte,
+//          Extent == dynamic_extent
+//              ? dynamic_extent
+//              : sizeof(ElementType) * Extent>
+//     as_writable_bytes(span<ElementType, Extent> s) noexcept;
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template<typename Span>
+void testRuntimeSpan(Span sp)
+{
+    ASSERT_NOEXCEPT(std::as_writable_bytes(sp));
+
+    auto spBytes = std::as_writable_bytes(sp);
+    using SB = decltype(spBytes);
+    ASSERT_SAME_TYPE(std::byte, typename SB::element_type);
+
+    if constexpr (sp.extent == std::dynamic_extent)
+        assert(spBytes.extent == std::dynamic_extent);
+    else
+        assert(spBytes.extent == sizeof(typename Span::element_type) * sp.extent);
+
+    assert(static_cast<void*>(spBytes.data()) == static_cast<void*>(sp.data()));
+    assert(spBytes.size() == sp.size_bytes());
+}
+
+struct A{};
+int iArr2[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+
+int main(int, char**)
+{
+    testRuntimeSpan(std::span<int>        ());
+    testRuntimeSpan(std::span<long>       ());
+    testRuntimeSpan(std::span<double>     ());
+    testRuntimeSpan(std::span<A>          ());
+    testRuntimeSpan(std::span<std::string>());
+
+    testRuntimeSpan(std::span<int, 0>        ());
+    testRuntimeSpan(std::span<long, 0>       ());
+    testRuntimeSpan(std::span<double, 0>     ());
+    testRuntimeSpan(std::span<A, 0>          ());
+    testRuntimeSpan(std::span<std::string, 0>());
+
+    testRuntimeSpan(std::span<int>(iArr2, 1));
+    testRuntimeSpan(std::span<int>(iArr2, 2));
+    testRuntimeSpan(std::span<int>(iArr2, 3));
+    testRuntimeSpan(std::span<int>(iArr2, 4));
+    testRuntimeSpan(std::span<int>(iArr2, 5));
+
+    testRuntimeSpan(std::span<int, 1>(iArr2 + 5, 1));
+    testRuntimeSpan(std::span<int, 2>(iArr2 + 4, 2));
+    testRuntimeSpan(std::span<int, 3>(iArr2 + 3, 3));
+    testRuntimeSpan(std::span<int, 4>(iArr2 + 2, 4));
+    testRuntimeSpan(std::span<int, 5>(iArr2 + 1, 5));
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0));
+    testRuntimeSpan(std::span<std::string>(&s, 1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_writable_bytes.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_writable_bytes.verify.cpp
new file mode 100644
index 0000000..d32d591
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.objectrep/as_writable_bytes.verify.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template <class ElementType, size_t Extent>
+//     span<byte,
+//          Extent == dynamic_extent
+//              ? dynamic_extent
+//              : sizeof(ElementType) * Extent>
+//     as_writable_bytes(span<ElementType, Extent> s) noexcept;
+
+#include <span>
+#include <string>
+
+#include "test_macros.h"
+
+const int iArr2[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+
+struct A {};
+
+void f() {
+  std::as_writable_bytes(std::span<const int>());            // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const long>());           // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const double>());         // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const A>());              // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const std::string>());    // expected-error {{no matching function for call to 'as_writable_bytes'}}
+
+  std::as_writable_bytes(std::span<const int, 0>());         // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const long, 0>());        // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const double, 0>());      // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const A, 0>());           // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const std::string, (size_t)0>()); // expected-error {{no matching function for call to 'as_writable_bytes'}}
+
+  std::as_writable_bytes(std::span<const int>   (iArr2, 1));     // expected-error {{no matching function for call to 'as_writable_bytes'}}
+  std::as_writable_bytes(std::span<const int, 1>(iArr2 + 5, 1)); // expected-error {{no matching function for call to 'as_writable_bytes'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/empty.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/empty.nodiscard.verify.cpp
new file mode 100644
index 0000000..8efc4b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/empty.nodiscard.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// [[nodiscard]] constexpr bool empty() const noexcept;
+
+#include <span>
+
+void test() {
+  std::span<int> s1;
+  s1.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+  int arr[] = {1, 2, 3};
+  std::span<int, 3> s2{arr};
+  s2.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/empty.pass.cpp
new file mode 100644
index 0000000..3aa99b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/empty.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// [[nodiscard]] constexpr bool empty() const noexcept;
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+    static_assert( noexcept(std::span<int>   ().empty()), "");
+    static_assert( noexcept(std::span<int, 0>().empty()), "");
+
+
+    static_assert( std::span<int>().empty(),            "");
+    static_assert( std::span<long>().empty(),           "");
+    static_assert( std::span<double>().empty(),         "");
+    static_assert( std::span<A>().empty(),              "");
+    static_assert( std::span<std::string>().empty(),    "");
+
+    static_assert( std::span<int, 0>().empty(),         "");
+    static_assert( std::span<long, 0>().empty(),        "");
+    static_assert( std::span<double, 0>().empty(),      "");
+    static_assert( std::span<A, 0>().empty(),           "");
+    static_assert( std::span<std::string, 0>().empty(), "");
+
+    static_assert(!std::span<const int>(iArr1, 1).empty(), "");
+    static_assert(!std::span<const int>(iArr1, 2).empty(), "");
+    static_assert(!std::span<const int>(iArr1, 3).empty(), "");
+    static_assert(!std::span<const int>(iArr1, 4).empty(), "");
+    static_assert(!std::span<const int>(iArr1, 5).empty(), "");
+
+    assert( (std::span<int>().empty()           ));
+    assert( (std::span<long>().empty()          ));
+    assert( (std::span<double>().empty()        ));
+    assert( (std::span<A>().empty()             ));
+    assert( (std::span<std::string>().empty()   ));
+
+    assert( (std::span<int, 0>().empty()        ));
+    assert( (std::span<long, 0>().empty()       ));
+    assert( (std::span<double, 0>().empty()     ));
+    assert( (std::span<A, 0>().empty()          ));
+    assert( (std::span<std::string, 0>().empty()));
+
+    assert(!(std::span<int, 1>(iArr2, 1).empty()));
+    assert(!(std::span<int, 2>(iArr2, 2).empty()));
+    assert(!(std::span<int, 3>(iArr2, 3).empty()));
+    assert(!(std::span<int, 4>(iArr2, 4).empty()));
+    assert(!(std::span<int, 5>(iArr2, 5).empty()));
+
+    std::string s;
+    assert( ((std::span<std::string>(&s, (std::size_t) 0)).empty()));
+    assert(!((std::span<std::string>(&s, 1).empty())));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/size.pass.cpp
new file mode 100644
index 0000000..5be7b98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/size.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr size_type size() const noexcept;
+//
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+template <typename Span>
+constexpr bool testConstexprSpan(Span sp, size_t sz)
+{
+    ASSERT_NOEXCEPT(sp.size());
+    return sp.size() == sz;
+}
+
+
+template <typename Span>
+void testRuntimeSpan(Span sp, size_t sz)
+{
+    ASSERT_NOEXCEPT(sp.size());
+    assert(sp.size() == sz);
+}
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<int>(), 0),            "");
+    static_assert(testConstexprSpan(std::span<long>(), 0),           "");
+    static_assert(testConstexprSpan(std::span<double>(), 0),         "");
+    static_assert(testConstexprSpan(std::span<A>(), 0),              "");
+    static_assert(testConstexprSpan(std::span<std::string>(), 0),    "");
+
+    static_assert(testConstexprSpan(std::span<int, 0>(), 0),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>(), 0),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>(), 0),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>(), 0),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>(), 0), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1), 1),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2), 2),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3), 3),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), 4),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 5), 5),    "");
+
+    testRuntimeSpan(std::span<int>        (), 0);
+    testRuntimeSpan(std::span<long>       (), 0);
+    testRuntimeSpan(std::span<double>     (), 0);
+    testRuntimeSpan(std::span<A>          (), 0);
+    testRuntimeSpan(std::span<std::string>(), 0);
+
+    testRuntimeSpan(std::span<int, 0>        (), 0);
+    testRuntimeSpan(std::span<long, 0>       (), 0);
+    testRuntimeSpan(std::span<double, 0>     (), 0);
+    testRuntimeSpan(std::span<A, 0>          (), 0);
+    testRuntimeSpan(std::span<std::string, 0>(), 0);
+
+    testRuntimeSpan(std::span<int>(iArr2, 1), 1);
+    testRuntimeSpan(std::span<int>(iArr2, 2), 2);
+    testRuntimeSpan(std::span<int>(iArr2, 3), 3);
+    testRuntimeSpan(std::span<int>(iArr2, 4), 4);
+    testRuntimeSpan(std::span<int>(iArr2, 5), 5);
+
+    testRuntimeSpan(std::span<int, 1>(iArr2 + 5, 1), 1);
+    testRuntimeSpan(std::span<int, 2>(iArr2 + 4, 2), 2);
+    testRuntimeSpan(std::span<int, 3>(iArr2 + 3, 3), 3);
+    testRuntimeSpan(std::span<int, 4>(iArr2 + 2, 4), 4);
+    testRuntimeSpan(std::span<int, 5>(iArr2 + 1, 5), 5);
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0), 0);
+    testRuntimeSpan(std::span<std::string>(&s, 1), 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/size_bytes.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/size_bytes.pass.cpp
new file mode 100644
index 0000000..9ce6d26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.obs/size_bytes.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// constexpr size_type size_bytes() const noexcept;
+//
+//  Effects: Equivalent to: return size() * sizeof(element_type);
+
+
+#include <span>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+
+template <typename Span>
+constexpr bool testConstexprSpan(Span sp, size_t sz)
+{
+    ASSERT_NOEXCEPT(sp.size_bytes());
+    return (size_t) sp.size_bytes() == sz * sizeof(typename Span::element_type);
+}
+
+
+template <typename Span>
+void testRuntimeSpan(Span sp, size_t sz)
+{
+    ASSERT_NOEXCEPT(sp.size_bytes());
+    assert((size_t) sp.size_bytes() == sz * sizeof(typename Span::element_type));
+}
+
+struct A{};
+constexpr int iArr1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9};
+          int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19};
+
+int main(int, char**)
+{
+    static_assert(testConstexprSpan(std::span<int>(), 0),            "");
+    static_assert(testConstexprSpan(std::span<long>(), 0),           "");
+    static_assert(testConstexprSpan(std::span<double>(), 0),         "");
+    static_assert(testConstexprSpan(std::span<A>(), 0),              "");
+    static_assert(testConstexprSpan(std::span<std::string>(), 0),    "");
+
+    static_assert(testConstexprSpan(std::span<int, 0>(), 0),         "");
+    static_assert(testConstexprSpan(std::span<long, 0>(), 0),        "");
+    static_assert(testConstexprSpan(std::span<double, 0>(), 0),      "");
+    static_assert(testConstexprSpan(std::span<A, 0>(), 0),           "");
+    static_assert(testConstexprSpan(std::span<std::string, 0>(), 0), "");
+
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 1), 1),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 2), 2),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 3), 3),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 4), 4),    "");
+    static_assert(testConstexprSpan(std::span<const int>(iArr1, 5), 5),    "");
+
+    testRuntimeSpan(std::span<int>        (), 0);
+    testRuntimeSpan(std::span<long>       (), 0);
+    testRuntimeSpan(std::span<double>     (), 0);
+    testRuntimeSpan(std::span<A>          (), 0);
+    testRuntimeSpan(std::span<std::string>(), 0);
+
+    testRuntimeSpan(std::span<int, 0>        (), 0);
+    testRuntimeSpan(std::span<long, 0>       (), 0);
+    testRuntimeSpan(std::span<double, 0>     (), 0);
+    testRuntimeSpan(std::span<A, 0>          (), 0);
+    testRuntimeSpan(std::span<std::string, 0>(), 0);
+
+    testRuntimeSpan(std::span<int>(iArr2, 1), 1);
+    testRuntimeSpan(std::span<int>(iArr2, 2), 2);
+    testRuntimeSpan(std::span<int>(iArr2, 3), 3);
+    testRuntimeSpan(std::span<int>(iArr2, 4), 4);
+    testRuntimeSpan(std::span<int>(iArr2, 5), 5);
+
+    testRuntimeSpan(std::span<int, 1>(iArr2 + 5, 1), 1);
+    testRuntimeSpan(std::span<int, 2>(iArr2 + 4, 2), 2);
+    testRuntimeSpan(std::span<int, 3>(iArr2 + 3, 3), 3);
+    testRuntimeSpan(std::span<int, 4>(iArr2 + 2, 4), 4);
+    testRuntimeSpan(std::span<int, 5>(iArr2 + 1, 5), 5);
+
+    std::string s;
+    testRuntimeSpan(std::span<std::string>(&s, (std::size_t) 0), 0);
+    testRuntimeSpan(std::span<std::string>(&s, 1), 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/first.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/first.pass.cpp
new file mode 100644
index 0000000..2b04cb0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/first.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t Count>
+//  constexpr span<element_type, Count> first() const;
+//
+// constexpr span<element_type, dynamic_extent> first(size_type count) const;
+//
+//  Requires: Count <= size().
+
+
+#include <span>
+#include <cassert>
+#include <algorithm>
+#include <string>
+
+#include "test_macros.h"
+
+template <typename Span, size_t Count>
+constexpr bool testConstexprSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template first<Count>())));
+    LIBCPP_ASSERT((noexcept(sp.first(Count))));
+    auto s1 = sp.template first<Count>();
+    auto s2 = sp.first(Count);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == Count, "");
+    static_assert(S2::extent == std::dynamic_extent, "");
+    return
+        s1.data() == s2.data()
+     && s1.size() == s2.size()
+     && std::equal(s1.begin(), s1.end(), sp.begin());
+}
+
+
+template <typename Span, size_t Count>
+void testRuntimeSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template first<Count>())));
+    LIBCPP_ASSERT((noexcept(sp.first(Count))));
+    auto s1 = sp.template first<Count>();
+    auto s2 = sp.first(Count);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == Count, "");
+    static_assert(S2::extent == std::dynamic_extent, "");
+    assert(s1.data() == s2.data());
+    assert(s1.size() == s2.size());
+    assert(std::equal(s1.begin(), s1.end(), sp.begin()));
+}
+
+
+constexpr int carr1[] = {1,2,3,4};
+          int   arr[] = {5,6,7};
+std::string   sarr [] = { "ABC", "DEF", "GHI", "JKL", "MNO"};
+
+int main(int, char**)
+{
+    {
+    using Sp = std::span<const int>;
+    static_assert(testConstexprSpan<Sp, 0>(Sp{}), "");
+
+    static_assert(testConstexprSpan<Sp, 0>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<const int, 4>;
+
+    static_assert(testConstexprSpan<Sp, 0>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<int>;
+    testRuntimeSpan<Sp, 0>(Sp{});
+
+    testRuntimeSpan<Sp, 0>(Sp{arr});
+    testRuntimeSpan<Sp, 1>(Sp{arr});
+    testRuntimeSpan<Sp, 2>(Sp{arr});
+    testRuntimeSpan<Sp, 3>(Sp{arr});
+    }
+
+    {
+    using Sp = std::span<int, 3>;
+
+    testRuntimeSpan<Sp, 0>(Sp{arr});
+    testRuntimeSpan<Sp, 1>(Sp{arr});
+    testRuntimeSpan<Sp, 2>(Sp{arr});
+    testRuntimeSpan<Sp, 3>(Sp{arr});
+    }
+
+    {
+    using Sp = std::span<std::string>;
+    testConstexprSpan<Sp, 0>(Sp{});
+
+    testRuntimeSpan<Sp, 0>(Sp{sarr});
+    testRuntimeSpan<Sp, 1>(Sp{sarr});
+    testRuntimeSpan<Sp, 2>(Sp{sarr});
+    testRuntimeSpan<Sp, 3>(Sp{sarr});
+    testRuntimeSpan<Sp, 4>(Sp{sarr});
+    testRuntimeSpan<Sp, 5>(Sp{sarr});
+    }
+
+    {
+    using Sp = std::span<std::string, 5>;
+
+    testRuntimeSpan<Sp, 0>(Sp{sarr});
+    testRuntimeSpan<Sp, 1>(Sp{sarr});
+    testRuntimeSpan<Sp, 2>(Sp{sarr});
+    testRuntimeSpan<Sp, 3>(Sp{sarr});
+    testRuntimeSpan<Sp, 4>(Sp{sarr});
+    testRuntimeSpan<Sp, 5>(Sp{sarr});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/first.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/first.verify.cpp
new file mode 100644
index 0000000..8e011b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/first.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t Count>
+//  constexpr span<element_type, Count> first() const;
+//
+//  Requires: Count <= size().
+
+#include <span>
+#include <cstddef>
+
+void f() {
+  int array[] = {1, 2, 3, 4};
+  std::span<const int, 4> sp(array);
+
+  //  Count too large
+  [[maybe_unused]] auto s1 = sp.first<5>(); // expected-error@span:* {{span<T, N>::first<Count>(): Count out of range}}
+
+  //  Count numeric_limits
+  [[maybe_unused]] auto s2 = sp.first<std::size_t(-1)>(); // expected-error@span:* {{span<T, N>::first<Count>(): Count out of range}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/last.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/last.pass.cpp
new file mode 100644
index 0000000..6fa6edf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/last.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t Count>
+//  constexpr span<element_type, Count> last() const;
+//
+// constexpr span<element_type, dynamic_extent> last(size_type count) const;
+//
+//  Requires: Count <= size().
+
+
+#include <span>
+#include <cassert>
+#include <algorithm>
+#include <string>
+
+#include "test_macros.h"
+
+template <typename Span, size_t Count>
+constexpr bool testConstexprSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template last<Count>())));
+    LIBCPP_ASSERT((noexcept(sp.last(Count))));
+    auto s1 = sp.template last<Count>();
+    auto s2 = sp.last(Count);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == Count, "");
+    static_assert(S2::extent == std::dynamic_extent, "");
+    return
+        s1.data() == s2.data()
+     && s1.size() == s2.size()
+     && std::equal(s1.begin(), s1.end(), sp.end() - Count);
+}
+
+
+template <typename Span, size_t Count>
+void testRuntimeSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template last<Count>())));
+    LIBCPP_ASSERT((noexcept(sp.last(Count))));
+    auto s1 = sp.template last<Count>();
+    auto s2 = sp.last(Count);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == Count, "");
+    static_assert(S2::extent == std::dynamic_extent, "");
+    assert(s1.data() == s2.data());
+    assert(s1.size() == s2.size());
+    assert(std::equal(s1.begin(), s1.end(), sp.end() - Count));
+}
+
+
+constexpr int carr1[] = {1,2,3,4};
+          int   arr[] = {5,6,7};
+std::string   sarr [] = { "ABC", "DEF", "GHI", "JKL", "MNO"};
+
+int main(int, char**)
+{
+    {
+    using Sp = std::span<const int>;
+    static_assert(testConstexprSpan<Sp, 0>(Sp{}), "");
+
+    static_assert(testConstexprSpan<Sp, 0>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<const int, 4>;
+
+    static_assert(testConstexprSpan<Sp, 0>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<int>;
+    testRuntimeSpan<Sp, 0>(Sp{});
+
+    testRuntimeSpan<Sp, 0>(Sp{arr});
+    testRuntimeSpan<Sp, 1>(Sp{arr});
+    testRuntimeSpan<Sp, 2>(Sp{arr});
+    testRuntimeSpan<Sp, 3>(Sp{arr});
+    }
+
+    {
+    using Sp = std::span<int, 3>;
+
+    testRuntimeSpan<Sp, 0>(Sp{arr});
+    testRuntimeSpan<Sp, 1>(Sp{arr});
+    testRuntimeSpan<Sp, 2>(Sp{arr});
+    testRuntimeSpan<Sp, 3>(Sp{arr});
+    }
+
+    {
+    using Sp = std::span<std::string>;
+    testConstexprSpan<Sp, 0>(Sp{});
+
+    testRuntimeSpan<Sp, 0>(Sp{sarr});
+    testRuntimeSpan<Sp, 1>(Sp{sarr});
+    testRuntimeSpan<Sp, 2>(Sp{sarr});
+    testRuntimeSpan<Sp, 3>(Sp{sarr});
+    testRuntimeSpan<Sp, 4>(Sp{sarr});
+    testRuntimeSpan<Sp, 5>(Sp{sarr});
+    }
+
+    {
+    using Sp = std::span<std::string, 5>;
+
+    testRuntimeSpan<Sp, 0>(Sp{sarr});
+    testRuntimeSpan<Sp, 1>(Sp{sarr});
+    testRuntimeSpan<Sp, 2>(Sp{sarr});
+    testRuntimeSpan<Sp, 3>(Sp{sarr});
+    testRuntimeSpan<Sp, 4>(Sp{sarr});
+    testRuntimeSpan<Sp, 5>(Sp{sarr});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/last.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/last.verify.cpp
new file mode 100644
index 0000000..1594e68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/last.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t Count>
+//  constexpr span<element_type, Count> last() const;
+//
+//  Requires: Count <= size().
+
+#include <span>
+#include <cstddef>
+
+void f() {
+  int array[] = {1, 2, 3, 4};
+  std::span<const int, 4> sp(array);
+
+  //  Count too large
+  [[maybe_unused]] auto s1 = sp.last<5>(); // expected-error@span:* {{span<T, N>::last<Count>(): Count out of range}}
+
+  //  Count numeric_limits
+  [[maybe_unused]] auto s2 = sp.last<std::size_t(-1)>(); // expected-error@span:* {{span<T, N>::last<Count>(): Count out of range}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/subspan.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/subspan.pass.cpp
new file mode 100644
index 0000000..f426ab6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/subspan.pass.cpp
@@ -0,0 +1,210 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<size_t Offset, size_t Count = dynamic_extent>
+//   constexpr span<element_type, see below> subspan() const;
+//
+// constexpr span<element_type, dynamic_extent> subspan(
+//   size_type offset, size_type count = dynamic_extent) const;
+//
+//  Requires: (0 <= Offset && Offset <= size())
+//      && (Count == dynamic_extent || Count >= 0 && Offset + Count <= size())
+
+#include <span>
+#include <cassert>
+#include <algorithm>
+#include <string>
+
+#include "test_macros.h"
+
+template <typename Span, size_t Offset, size_t Count>
+constexpr bool testConstexprSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template subspan<Offset, Count>())));
+    LIBCPP_ASSERT((noexcept(sp.subspan(Offset, Count))));
+    auto s1 = sp.template subspan<Offset, Count>();
+    auto s2 = sp.subspan(Offset, Count);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == Count);
+    static_assert(S2::extent == std::dynamic_extent, "");
+    return
+        s1.data() == s2.data()
+     && s1.size() == s2.size()
+     && std::equal(s1.begin(), s1.end(), sp.begin() + Offset);
+}
+
+template <typename Span, size_t Offset>
+constexpr bool testConstexprSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template subspan<Offset>())));
+    LIBCPP_ASSERT((noexcept(sp.subspan(Offset))));
+    auto s1 = sp.template subspan<Offset>();
+    auto s2 = sp.subspan(Offset);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == (Span::extent == std::dynamic_extent ? std::dynamic_extent : Span::extent - Offset), "");
+    static_assert(S2::extent == std::dynamic_extent, "");
+    return
+        s1.data() == s2.data()
+     && s1.size() == s2.size()
+     && std::equal(s1.begin(), s1.end(), sp.begin() + Offset, sp.end());
+}
+
+
+template <typename Span, size_t Offset, size_t Count>
+void testRuntimeSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template subspan<Offset, Count>())));
+    LIBCPP_ASSERT((noexcept(sp.subspan(Offset, Count))));
+    auto s1 = sp.template subspan<Offset, Count>();
+    auto s2 = sp.subspan(Offset, Count);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == Count);
+    static_assert(S2::extent == std::dynamic_extent, "");
+    assert(s1.data() == s2.data());
+    assert(s1.size() == s2.size());
+    assert(std::equal(s1.begin(), s1.end(), sp.begin() + Offset));
+}
+
+
+template <typename Span, size_t Offset>
+void testRuntimeSpan(Span sp)
+{
+    LIBCPP_ASSERT((noexcept(sp.template subspan<Offset>())));
+    LIBCPP_ASSERT((noexcept(sp.subspan(Offset))));
+    auto s1 = sp.template subspan<Offset>();
+    auto s2 = sp.subspan(Offset);
+    using S1 = decltype(s1);
+    using S2 = decltype(s2);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S1::value_type);
+    ASSERT_SAME_TYPE(typename Span::value_type, typename S2::value_type);
+    static_assert(S1::extent == (Span::extent == std::dynamic_extent ? std::dynamic_extent : Span::extent - Offset), "");
+    static_assert(S2::extent == std::dynamic_extent, "");
+    assert(s1.data() == s2.data());
+    assert(s1.size() == s2.size());
+    assert(std::equal(s1.begin(), s1.end(), sp.begin() + Offset, sp.end()));
+}
+
+
+constexpr int carr1[] = {1,2,3,4};
+          int  arr1[] = {5,6,7};
+
+int main(int, char**)
+{
+    {
+    using Sp = std::span<const int>;
+    static_assert(testConstexprSpan<Sp, 0>(Sp{}), "");
+
+    static_assert(testConstexprSpan<Sp, 0, 4>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 0>(Sp{carr1}), "");
+
+    static_assert(testConstexprSpan<Sp, 1, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4, 0>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<const int, 4>;
+
+    static_assert(testConstexprSpan<Sp, 0, 4>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 0, 0>(Sp{carr1}), "");
+
+    static_assert(testConstexprSpan<Sp, 1, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4, 0>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<const int>;
+    static_assert(testConstexprSpan<Sp, 0>(Sp{}), "");
+
+    static_assert(testConstexprSpan<Sp, 0>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<const int, 4>;
+
+    static_assert(testConstexprSpan<Sp, 0>(Sp{carr1}), "");
+
+    static_assert(testConstexprSpan<Sp, 1>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 2>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 3>(Sp{carr1}), "");
+    static_assert(testConstexprSpan<Sp, 4>(Sp{carr1}), "");
+    }
+
+    {
+    using Sp = std::span<int>;
+    testRuntimeSpan<Sp, 0>(Sp{});
+
+    testRuntimeSpan<Sp, 0, 3>(Sp{arr1});
+    testRuntimeSpan<Sp, 0, 2>(Sp{arr1});
+    testRuntimeSpan<Sp, 0, 1>(Sp{arr1});
+    testRuntimeSpan<Sp, 0, 0>(Sp{arr1});
+
+    testRuntimeSpan<Sp, 1, 2>(Sp{arr1});
+    testRuntimeSpan<Sp, 2, 1>(Sp{arr1});
+    testRuntimeSpan<Sp, 3, 0>(Sp{arr1});
+    }
+
+    {
+    using Sp = std::span<int, 3>;
+
+    testRuntimeSpan<Sp, 0, 3>(Sp{arr1});
+    testRuntimeSpan<Sp, 0, 2>(Sp{arr1});
+    testRuntimeSpan<Sp, 0, 1>(Sp{arr1});
+    testRuntimeSpan<Sp, 0, 0>(Sp{arr1});
+
+    testRuntimeSpan<Sp, 1, 2>(Sp{arr1});
+    testRuntimeSpan<Sp, 2, 1>(Sp{arr1});
+    testRuntimeSpan<Sp, 3, 0>(Sp{arr1});
+    }
+
+    {
+    using Sp = std::span<int>;
+    testRuntimeSpan<Sp, 0>(Sp{});
+
+    testRuntimeSpan<Sp, 0>(Sp{arr1});
+    testRuntimeSpan<Sp, 1>(Sp{arr1});
+    testRuntimeSpan<Sp, 2>(Sp{arr1});
+    testRuntimeSpan<Sp, 3>(Sp{arr1});
+    }
+
+    {
+    using Sp = std::span<int, 3>;
+
+    testRuntimeSpan<Sp, 0>(Sp{arr1});
+    testRuntimeSpan<Sp, 1>(Sp{arr1});
+    testRuntimeSpan<Sp, 2>(Sp{arr1});
+    testRuntimeSpan<Sp, 3>(Sp{arr1});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/subspan.verify.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/subspan.verify.cpp
new file mode 100644
index 0000000..1e58162
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/span.sub/subspan.verify.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test also generates spurious warnings when instantiating std::span
+// with a very large extent (like size_t(-2)) -- silence those.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=warning
+
+// <span>
+
+// template<size_t Offset, size_t Count = dynamic_extent>
+//   constexpr span<element_type, see below> subspan() const;
+//
+//  Requires: offset <= size() &&
+//            (count == dynamic_extent || count <= size() - offset)
+
+#include <span>
+#include <cstddef>
+
+void f() {
+  int array[] = {1, 2, 3, 4};
+  std::span<const int, 4> sp(array);
+
+  //  Offset too large templatized
+  [[maybe_unused]] auto s1 = sp.subspan<5>(); // expected-error@span:* {{span<T, N>::subspan<Offset, Count>(): Offset out of range}}
+
+  //  Count too large templatized
+  [[maybe_unused]] auto s2 = sp.subspan<0, 5>(); // expected-error@span:* {{span<T, N>::subspan<Offset, Count>(): Offset + Count out of range}}
+
+  //  Offset + Count too large templatized
+  [[maybe_unused]] auto s3 = sp.subspan<2, 3>(); // expected-error@span:* {{span<T, N>::subspan<Offset, Count>(): Offset + Count out of range}}
+
+  //  Offset + Count overflow templatized
+  [[maybe_unused]] auto s4 = sp.subspan<3, std::size_t(-2)>(); // expected-error@span:* {{span<T, N>::subspan<Offset, Count>(): Offset + Count out of range}}, expected-error-re@span:* {{array is too large{{(.* elements)}}}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/trivially_copyable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/trivially_copyable.compile.pass.cpp
new file mode 100644
index 0000000..bb30bb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/trivially_copyable.compile.pass.cpp
@@ -0,0 +1,18 @@
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// P2251 was voted into C++23, but is supported even in C++20 mode by all vendors.
+
+// <span>
+
+#include <span>
+#include <type_traits>
+
+static_assert(std::is_trivially_copyable_v<std::span<int>>);
+static_assert(std::is_trivially_copyable_v<std::span<int, 3>>);
diff --git a/app/src/main/cpp/libcxx/test/std/containers/views/views.span/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/types.pass.cpp
new file mode 100644
index 0000000..ad86f62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/containers/views/views.span/types.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <span>
+
+// template<class ElementType, size_t Extent = dynamic_extent>
+// class span {
+// public:
+//  // constants and types
+//  using element_type           = ElementType;
+//  using value_type             = remove_cv_t<ElementType>;
+//  using size_type              = size_t;
+//  using difference_type        = ptrdiff_t;
+//  using pointer                = element_type *;
+//  using reference              = element_type &;
+//  using const_pointe           = const element_type *;
+//  using const_reference        = const element_type &;
+//  using iterator               = implementation-defined;
+//  using const_iterator         = implementation-defined;
+//  using reverse_iterator       = std::reverse_iterator<iterator>;
+//  using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+//
+//  static constexpr size_type extent = Extent;
+//
+
+#include <span>
+#include <cassert>
+#include <iterator>
+#include <string>
+
+#include "test_macros.h"
+
+template <typename S, typename Iter>
+void testIterator()
+{
+    typedef std::iterator_traits<Iter> ItT;
+
+    ASSERT_SAME_TYPE(typename ItT::iterator_category, std::random_access_iterator_tag);
+    ASSERT_SAME_TYPE(typename ItT::value_type,        typename S::value_type);
+    ASSERT_SAME_TYPE(typename ItT::reference,         typename S::reference);
+    ASSERT_SAME_TYPE(typename ItT::pointer,           typename S::pointer);
+    ASSERT_SAME_TYPE(typename ItT::difference_type,   typename S::difference_type);
+}
+
+template <typename S, typename ElementType, std::size_t Size>
+void testSpan()
+{
+    ASSERT_SAME_TYPE(typename S::element_type,    ElementType);
+    ASSERT_SAME_TYPE(typename S::value_type,      std::remove_cv_t<ElementType>);
+    ASSERT_SAME_TYPE(typename S::size_type,       std::size_t);
+    ASSERT_SAME_TYPE(typename S::difference_type, std::ptrdiff_t);
+    ASSERT_SAME_TYPE(typename S::pointer,         ElementType *);
+    ASSERT_SAME_TYPE(typename S::const_pointer,   const ElementType *);
+    ASSERT_SAME_TYPE(typename S::reference,       ElementType &);
+    ASSERT_SAME_TYPE(typename S::const_reference, const ElementType &);
+
+    static_assert(S::extent == Size); // check that it exists
+
+    testIterator<S, typename S::iterator>();
+    testIterator<S, typename S::reverse_iterator>();
+}
+
+
+template <typename T>
+void test()
+{
+    testSpan<std::span<               T>,                T, std::dynamic_extent>();
+    testSpan<std::span<const          T>, const          T, std::dynamic_extent>();
+    testSpan<std::span<      volatile T>,       volatile T, std::dynamic_extent>();
+    testSpan<std::span<const volatile T>, const volatile T, std::dynamic_extent>();
+
+    testSpan<std::span<               T, 5>,                T, 5>();
+    testSpan<std::span<const          T, 5>, const          T, 5>();
+    testSpan<std::span<      volatile T, 5>,       volatile T, 5>();
+    testSpan<std::span<const volatile T, 5>, const volatile T, 5>();
+}
+
+struct A{};
+
+int main(int, char**)
+{
+    test<int>();
+    test<long>();
+    test<double>();
+    test<std::string>();
+    test<A>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.atomics/depr.atomics.nonmembers/atomic_init.depr_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.atomics/depr.atomics.nonmembers/atomic_init.depr_in_cxx20.verify.cpp
new file mode 100644
index 0000000..0a79494
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.atomics/depr.atomics.nonmembers/atomic_init.depr_in_cxx20.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <atomic>
+//
+// atomic_init
+
+#include <atomic>
+
+void test() {
+  std::atomic<int> a;
+  std::atomic_init(&a, 1); // expected-warning {{'atomic_init<int>' is deprecated}}
+
+  volatile std::atomic<int> b;
+  std::atomic_init(&b, 1); // expected-warning {{'atomic_init<int>' is deprecated}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/A.h b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/A.h
new file mode 100644
index 0000000..13a45ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/A.h
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef A_H
+#define A_H
+
+#include <cassert>
+
+class A
+{
+    int id_;
+public:
+    explicit A(int id) : id_(id) {++count;}
+    A(const A& a) : id_(a.id_) {++count;}
+    ~A() {assert(id_ >= 0); id_ = -1; --count;}
+
+    A& operator=(const A& other) { id_ = other.id_; return *this; }
+
+    int id() const {return id_;}
+
+    static int count;
+};
+
+int A::count = 0;
+
+#endif // A_H
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/AB.h b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/AB.h
new file mode 100644
index 0000000..fd5c323
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/AB.h
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef AB_H
+#define AB_H
+
+#include <cassert>
+
+class A
+{
+    int id_;
+public:
+    explicit A(int id) : id_(id) {++count;}
+    A(const A& a) : id_(a.id_) {++count;}
+    virtual ~A() {assert(id_ >= 0); id_ = -1; --count;}
+
+    A& operator=(const A& other) { id_ = other.id_; return *this; }
+
+    static int count;
+};
+
+int A::count = 0;
+
+class B
+    : public A
+{
+public:
+    explicit B(int id) : A(id) {++count;}
+    B(const B& a) : A(a) {++count;}
+    virtual ~B() {--count;}
+
+    static int count;
+};
+
+int B::count = 0;
+
+#endif // AB_H
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/assignment.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/assignment.compile.fail.cpp
new file mode 100644
index 0000000..2fa102e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/assignment.compile.fail.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr& operator=(auto_ptr& a) throw();
+
+#include <memory>
+#include <cassert>
+
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p1 = new A(1);
+    const std::auto_ptr<A> ap1(p1);
+    A* p2 = new A(2);
+    std::auto_ptr<A> ap2(p2);
+    assert(A::count == 2);
+    assert(ap1.get() == p1);
+    assert(ap2.get() == p2);
+    std::auto_ptr<A>& apr = ap2 = ap1;
+    assert(&apr == &ap2);
+    assert(A::count == 1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p1);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/assignment.pass.cpp
new file mode 100644
index 0000000..07d27cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/assignment.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr& operator=(auto_ptr& a) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p1 = new A(1);
+    std::auto_ptr<A> ap1(p1);
+    A* p2 = new A(2);
+    std::auto_ptr<A> ap2(p2);
+    assert(A::count == 2);
+    assert(ap1.get() == p1);
+    assert(ap2.get() == p2);
+    std::auto_ptr<A>& apr = ap2 = ap1;
+    assert(&apr == &ap2);
+    assert(A::count == 1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p1);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert.compile.fail.cpp
new file mode 100644
index 0000000..2a7fe66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert.compile.fail.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr(auto_ptr& a) throw();
+
+#include <memory>
+#include <cassert>
+
+#include "../AB.h"
+
+void
+test()
+{
+    {
+    B* p = new B(1);
+    const std::auto_ptr<B> ap1(p);
+    std::auto_ptr<A> ap2(ap1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p);
+    assert(A::count == 1);
+    assert(B::count == 1);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert.pass.cpp
new file mode 100644
index 0000000..df88e2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr(auto_ptr& a) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../AB.h"
+
+void
+test()
+{
+    {
+    B* p = new B(1);
+    std::auto_ptr<B> ap1(p);
+    std::auto_ptr<A> ap2(ap1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p);
+    assert(A::count == 1);
+    assert(B::count == 1);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert_assignment.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert_assignment.compile.fail.cpp
new file mode 100644
index 0000000..e387420
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert_assignment.compile.fail.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// template<class Y> auto_ptr& operator=(auto_ptr<Y>& a) throw();
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "../AB.h"
+
+void
+test()
+{
+    {
+    B* p1 = new B(1);
+    const std::auto_ptr<B> ap1(p1);
+    A* p2 = new A(2);
+    std::auto_ptr<A> ap2(p2);
+    assert(A::count == 2);
+    assert(B::count == 1);
+    assert(ap1.get() == p1);
+    assert(ap2.get() == p2);
+    std::auto_ptr<A>& apr = ap2 = ap1;
+    assert(&apr == &ap2);
+    assert(A::count == 1);
+    assert(B::count == 1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p1);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert_assignment.pass.cpp
new file mode 100644
index 0000000..85754eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/convert_assignment.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// template<class Y> auto_ptr& operator=(auto_ptr<Y>& a) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../AB.h"
+
+void
+test()
+{
+    {
+    B* p1 = new B(1);
+    std::auto_ptr<B> ap1(p1);
+    A* p2 = new A(2);
+    std::auto_ptr<A> ap2(p2);
+    assert(A::count == 2);
+    assert(B::count == 1);
+    assert(ap1.get() == p1);
+    assert(ap2.get() == p2);
+    std::auto_ptr<A>& apr = ap2 = ap1;
+    assert(&apr == &ap2);
+    assert(A::count == 1);
+    assert(B::count == 1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p1);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/copy.compile.fail.cpp
new file mode 100644
index 0000000..dd043e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/copy.compile.fail.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr(auto_ptr& a) throw();
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    const std::auto_ptr<A> ap1(p);
+    std::auto_ptr<A> ap2(ap1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p);
+    assert(A::count == 1);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/copy.pass.cpp
new file mode 100644
index 0000000..5991911
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/copy.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr(auto_ptr& a) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap1(p);
+    std::auto_ptr<A> ap2(ap1);
+    assert(ap1.get() == 0);
+    assert(ap2.get() == p);
+    assert(A::count == 1);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/explicit.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/explicit.compile.fail.cpp
new file mode 100644
index 0000000..c830d82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/explicit.compile.fail.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// explicit auto_ptr(X* p =0) throw();
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap = p;
+    assert(ap.get() == p);
+    assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+    std::auto_ptr<A> ap;
+    assert(ap.get() == 0);
+    }
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/pointer.pass.cpp
new file mode 100644
index 0000000..d337366
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.cons/pointer.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// explicit auto_ptr(X* p =0) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap(p);
+    assert(ap.get() == p);
+    assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+    std::auto_ptr<A> ap;
+    assert(ap.get() == 0);
+    }
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/assign_from_auto_ptr_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/assign_from_auto_ptr_ref.pass.cpp
new file mode 100644
index 0000000..3b1bc9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/assign_from_auto_ptr_ref.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr& operator=(auto_ptr_ref<X> r) throw()
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p1 = new A(1);
+    std::auto_ptr<A> ap1(p1);
+    std::auto_ptr_ref<A> apr = ap1;
+    std::auto_ptr<A> ap2(new A(2));
+    ap2 = apr;
+    assert(A::count == 1);
+    assert(ap2.get() == p1);
+    assert(ap1.get() == 0);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_from_auto_ptr_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_from_auto_ptr_ref.pass.cpp
new file mode 100644
index 0000000..e19c170
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_from_auto_ptr_ref.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// auto_ptr(auto_ptr_ref<X> r) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../AB.h"
+
+void
+test()
+{
+    {
+    B* p1 = new B(1);
+    std::auto_ptr<B> ap1(p1);
+    std::auto_ptr_ref<A> apr = ap1;
+    std::auto_ptr<A> ap2(apr);
+    assert(ap2.get() == p1);
+    assert(ap1.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_to_auto_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_to_auto_ptr.pass.cpp
new file mode 100644
index 0000000..115716c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_to_auto_ptr.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// template<class Y> operator auto_ptr<Y>() throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../AB.h"
+
+std::auto_ptr<B>
+source()
+{
+    return std::auto_ptr<B>(new B(1));
+}
+
+void
+test()
+{
+    std::auto_ptr<A> ap2(source());
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_to_auto_ptr_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_to_auto_ptr_ref.pass.cpp
new file mode 100644
index 0000000..b3e8d95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.conv/convert_to_auto_ptr_ref.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// template<class Y> operator auto_ptr_ref<Y>() throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../AB.h"
+
+void
+test()
+{
+    B* p1 = new B(1);
+    std::auto_ptr<B> ap1(p1);
+    std::auto_ptr_ref<A> apr = ap1;
+    std::auto_ptr<A> ap2(apr);
+    assert(ap1.get() == nullptr);
+    assert(ap2.get() == p1);
+    ap2.release();
+    delete p1;
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/arrow.pass.cpp
new file mode 100644
index 0000000..d06f44a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/arrow.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// X& operator*() const throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap(p);
+    assert(ap->id() == 1);
+    *ap = A(3);
+    assert(ap->id() == 3);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/deref.pass.cpp
new file mode 100644
index 0000000..290a513
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/deref.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// X& operator*() const throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    const std::auto_ptr<A> ap(p);
+    assert((*ap).id() == 1);
+    *ap = A(3);
+    assert((*ap).id() == 3);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/release.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/release.pass.cpp
new file mode 100644
index 0000000..960ee0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/release.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// X* release() throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap(p);
+    A* p2 = ap.release();
+    assert(p2 == p);
+    assert(ap.get() == 0);
+    delete p;
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/reset.pass.cpp
new file mode 100644
index 0000000..1b5a095
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/auto.ptr.members/reset.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X> class auto_ptr;
+
+// void reset(X* p=0) throw();
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../A.h"
+
+void
+test()
+{
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap(p);
+    ap.reset();
+    assert(ap.get() == 0);
+    assert(A::count == 0);
+    }
+    assert(A::count == 0);
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap(p);
+    ap.reset(p);
+    assert(ap.get() == p);
+    assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+    A* p = new A(1);
+    std::auto_ptr<A> ap(p);
+    A* p2 = new A(2);
+    ap.reset(p2);
+    assert(ap.get() == p2);
+    assert(A::count == 1);
+    }
+    assert(A::count == 0);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/element_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/element_type.pass.cpp
new file mode 100644
index 0000000..4f16539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.auto.ptr/auto.ptr/element_type.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class X>
+// class auto_ptr
+// {
+// public:
+//   typedef X element_type;
+//   ...
+// };
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    static_assert((std::is_same<typename std::auto_ptr<T>::element_type, T>::value), "");
+    std::auto_ptr<T> p;
+    ((void)p);
+}
+
+int main(int, char**)
+{
+    test<int>();
+    test<double>();
+    test<void>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/assert_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/assert_h.pass.cpp
new file mode 100644
index 0000000..364e931
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/assert_h.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <assert.h>
+
+#include <assert.h>
+
+#include "test_macros.h"
+
+#ifndef assert
+#error assert not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/ciso646.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/ciso646.pass.cpp
new file mode 100644
index 0000000..b619499
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/ciso646.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ciso646>
+
+#include <ciso646>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/complex.h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/complex.h.pass.cpp
new file mode 100644
index 0000000..92dc58c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/complex.h.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex.h>
+
+#include <complex.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::complex<double> d;
+    (void)d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/ctype_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/ctype_h.pass.cpp
new file mode 100644
index 0000000..b5deeee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/ctype_h.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ctype.h>
+
+#include <ctype.h>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifdef isalnum
+#error isalnum defined
+#endif
+
+#ifdef isalpha
+#error isalpha defined
+#endif
+
+#ifdef isblank
+#error isblank defined
+#endif
+
+#ifdef iscntrl
+#error iscntrl defined
+#endif
+
+#ifdef isdigit
+#error isdigit defined
+#endif
+
+#ifdef isgraph
+#error isgraph defined
+#endif
+
+#ifdef islower
+#error islower defined
+#endif
+
+#ifdef isprint
+#error isprint defined
+#endif
+
+#ifdef ispunct
+#error ispunct defined
+#endif
+
+#ifdef isspace
+#error isspace defined
+#endif
+
+#ifdef isupper
+#error isupper defined
+#endif
+
+#ifdef isxdigit
+#error isxdigit defined
+#endif
+
+#ifdef tolower
+#error tolower defined
+#endif
+
+#ifdef toupper
+#error toupper defined
+#endif
+
+int main(int, char**)
+{
+    static_assert((std::is_same<decltype(isalnum(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isalpha(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isblank(0)), int>::value), "");
+    static_assert((std::is_same<decltype(iscntrl(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isdigit(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isgraph(0)), int>::value), "");
+    static_assert((std::is_same<decltype(islower(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isprint(0)), int>::value), "");
+    static_assert((std::is_same<decltype(ispunct(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isspace(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isupper(0)), int>::value), "");
+    static_assert((std::is_same<decltype(isxdigit(0)), int>::value), "");
+    static_assert((std::is_same<decltype(tolower(0)), int>::value), "");
+    static_assert((std::is_same<decltype(toupper(0)), int>::value), "");
+
+    assert(isalnum('a'));
+    assert(isalpha('a'));
+    assert(isblank(' '));
+    assert(!iscntrl(' '));
+    assert(!isdigit('a'));
+    assert(isgraph('a'));
+    assert(islower('a'));
+    assert(isprint('a'));
+    assert(!ispunct('a'));
+    assert(!isspace('a'));
+    assert(!isupper('a'));
+    assert(isxdigit('a'));
+    assert(tolower('A') == 'a');
+    assert(toupper('a') == 'A');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/errno_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/errno_h.pass.cpp
new file mode 100644
index 0000000..faa2c82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/errno_h.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <errno.h>
+
+#include <errno.h>
+
+#include "test_macros.h"
+
+#ifndef EDOM
+#error EDOM not defined
+#endif
+
+#ifndef EILSEQ
+#error EILSEQ not defined
+#endif
+
+#ifndef ERANGE
+#error ERANGE not defined
+#endif
+
+#ifndef errno
+#error errno not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/fenv_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/fenv_h.pass.cpp
new file mode 100644
index 0000000..2898539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/fenv_h.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fenv.h>
+
+#include <fenv.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef FE_DIVBYZERO
+#error FE_DIVBYZERO not defined
+#endif
+
+#ifndef FE_INEXACT
+#error FE_INEXACT not defined
+#endif
+
+#ifndef FE_INVALID
+#error FE_INVALID not defined
+#endif
+
+#ifndef FE_OVERFLOW
+#error FE_OVERFLOW not defined
+#endif
+
+#ifndef FE_UNDERFLOW
+#error FE_UNDERFLOW not defined
+#endif
+
+#ifndef FE_ALL_EXCEPT
+#error FE_ALL_EXCEPT not defined
+#endif
+
+#ifndef FE_DOWNWARD
+#error FE_DOWNWARD not defined
+#endif
+
+#ifndef FE_TONEAREST
+#error FE_TONEAREST not defined
+#endif
+
+#ifndef FE_TOWARDZERO
+#error FE_TOWARDZERO not defined
+#endif
+
+#ifndef FE_UPWARD
+#error FE_UPWARD not defined
+#endif
+
+#ifndef FE_DFL_ENV
+#error FE_DFL_ENV not defined
+#endif
+
+int main(int, char**)
+{
+    fenv_t fenv = {};
+    fexcept_t fex = 0;
+    static_assert((std::is_same<decltype(::feclearexcept(0)), int>::value), "");
+    static_assert((std::is_same<decltype(::fegetexceptflag(&fex, 0)), int>::value), "");
+    static_assert((std::is_same<decltype(::feraiseexcept(0)), int>::value), "");
+    static_assert((std::is_same<decltype(::fesetexceptflag(&fex, 0)), int>::value), "");
+    static_assert((std::is_same<decltype(::fetestexcept(0)), int>::value), "");
+    static_assert((std::is_same<decltype(::fegetround()), int>::value), "");
+    static_assert((std::is_same<decltype(::fesetround(0)), int>::value), "");
+    static_assert((std::is_same<decltype(::fegetenv(&fenv)), int>::value), "");
+    static_assert((std::is_same<decltype(::feholdexcept(&fenv)), int>::value), "");
+    static_assert((std::is_same<decltype(::fesetenv(&fenv)), int>::value), "");
+    static_assert((std::is_same<decltype(::feupdateenv(&fenv)), int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/float_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/float_h.pass.cpp
new file mode 100644
index 0000000..b3f4230
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/float_h.pass.cpp
@@ -0,0 +1,185 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <float.h>
+
+#include <float.h>
+
+#include "test_macros.h"
+
+#ifndef FLT_ROUNDS
+#error FLT_ROUNDS not defined
+#endif
+
+#ifndef FLT_EVAL_METHOD
+#error FLT_EVAL_METHOD not defined
+#endif
+
+#ifndef FLT_RADIX
+#error FLT_RADIX not defined
+#endif
+
+#if TEST_STD_VER > 14
+#ifndef FLT_HAS_SUBNORM
+#error FLT_HAS_SUBNORM not defined
+#endif
+
+#ifndef DBL_HAS_SUBNORM
+#error DBL_HAS_SUBNORM not defined
+#endif
+
+#ifndef LDBL_HAS_SUBNORM
+#error LDBL_HAS_SUBNORM not defined
+#endif
+#endif
+
+#ifndef FLT_MANT_DIG
+#error FLT_MANT_DIG not defined
+#endif
+
+#ifndef DBL_MANT_DIG
+#error DBL_MANT_DIG not defined
+#endif
+
+#ifndef LDBL_MANT_DIG
+#error LDBL_MANT_DIG not defined
+#endif
+
+#ifndef DECIMAL_DIG
+#error DECIMAL_DIG not defined
+#endif
+
+#if TEST_STD_VER > 14
+#ifndef FLT_DECIMAL_DIG
+#error FLT_DECIMAL_DIG not defined
+#endif
+
+#ifndef DBL_DECIMAL_DIG
+#error DBL_DECIMAL_DIG not defined
+#endif
+
+#ifndef LDBL_DECIMAL_DIG
+#error LDBL_DECIMAL_DIG not defined
+#endif
+#endif
+
+#ifndef FLT_DIG
+#error FLT_DIG not defined
+#endif
+
+#ifndef DBL_DIG
+#error DBL_DIG not defined
+#endif
+
+#ifndef LDBL_DIG
+#error LDBL_DIG not defined
+#endif
+
+#ifndef FLT_MIN_EXP
+#error FLT_MIN_EXP not defined
+#endif
+
+#ifndef DBL_MIN_EXP
+#error DBL_MIN_EXP not defined
+#endif
+
+#ifndef LDBL_MIN_EXP
+#error LDBL_MIN_EXP not defined
+#endif
+
+#ifndef FLT_MIN_10_EXP
+#error FLT_MIN_10_EXP not defined
+#endif
+
+#ifndef DBL_MIN_10_EXP
+#error DBL_MIN_10_EXP not defined
+#endif
+
+#ifndef LDBL_MIN_10_EXP
+#error LDBL_MIN_10_EXP not defined
+#endif
+
+#ifndef FLT_MAX_EXP
+#error FLT_MAX_EXP not defined
+#endif
+
+#ifndef DBL_MAX_EXP
+#error DBL_MAX_EXP not defined
+#endif
+
+#ifndef LDBL_MAX_EXP
+#error LDBL_MAX_EXP not defined
+#endif
+
+#ifndef FLT_MAX_10_EXP
+#error FLT_MAX_10_EXP not defined
+#endif
+
+#ifndef DBL_MAX_10_EXP
+#error DBL_MAX_10_EXP not defined
+#endif
+
+#ifndef LDBL_MAX_10_EXP
+#error LDBL_MAX_10_EXP not defined
+#endif
+
+#ifndef FLT_MAX
+#error FLT_MAX not defined
+#endif
+
+#ifndef DBL_MAX
+#error DBL_MAX not defined
+#endif
+
+#ifndef LDBL_MAX
+#error LDBL_MAX not defined
+#endif
+
+#ifndef FLT_EPSILON
+#error FLT_EPSILON not defined
+#endif
+
+#ifndef DBL_EPSILON
+#error DBL_EPSILON not defined
+#endif
+
+#ifndef LDBL_EPSILON
+#error LDBL_EPSILON not defined
+#endif
+
+#ifndef FLT_MIN
+#error FLT_MIN not defined
+#endif
+
+#ifndef DBL_MIN
+#error DBL_MIN not defined
+#endif
+
+#ifndef LDBL_MIN
+#error LDBL_MIN not defined
+#endif
+
+#if TEST_STD_VER > 14
+#ifndef FLT_TRUE_MIN
+#error FLT_TRUE_MIN not defined
+#endif
+
+#ifndef DBL_TRUE_MIN
+#error DBL_TRUE_MIN not defined
+#endif
+
+#ifndef LDBL_TRUE_MIN
+#error LDBL_TRUE_MIN not defined
+#endif
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp
new file mode 100644
index 0000000..b9f9a58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp
@@ -0,0 +1,936 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <inttypes.h>
+
+#include <inttypes.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef INT8_MIN
+#error INT8_MIN not defined
+#endif
+
+#ifndef INT16_MIN
+#error INT16_MIN not defined
+#endif
+
+#ifndef INT32_MIN
+#error INT32_MIN not defined
+#endif
+
+#ifndef INT64_MIN
+#error INT64_MIN not defined
+#endif
+
+#ifndef INT8_MAX
+#error INT8_MAX not defined
+#endif
+
+#ifndef INT16_MAX
+#error INT16_MAX not defined
+#endif
+
+#ifndef INT32_MAX
+#error INT32_MAX not defined
+#endif
+
+#ifndef INT64_MAX
+#error INT64_MAX not defined
+#endif
+
+#ifndef UINT8_MAX
+#error UINT8_MAX not defined
+#endif
+
+#ifndef UINT16_MAX
+#error UINT16_MAX not defined
+#endif
+
+#ifndef UINT32_MAX
+#error UINT32_MAX not defined
+#endif
+
+#ifndef UINT64_MAX
+#error UINT64_MAX not defined
+#endif
+
+#ifndef INT_LEAST8_MIN
+#error INT_LEAST8_MIN not defined
+#endif
+
+#ifndef INT_LEAST16_MIN
+#error INT_LEAST16_MIN not defined
+#endif
+
+#ifndef INT_LEAST32_MIN
+#error INT_LEAST32_MIN not defined
+#endif
+
+#ifndef INT_LEAST64_MIN
+#error INT_LEAST64_MIN not defined
+#endif
+
+#ifndef INT_LEAST8_MAX
+#error INT_LEAST8_MAX not defined
+#endif
+
+#ifndef INT_LEAST16_MAX
+#error INT_LEAST16_MAX not defined
+#endif
+
+#ifndef INT_LEAST32_MAX
+#error INT_LEAST32_MAX not defined
+#endif
+
+#ifndef INT_LEAST64_MAX
+#error INT_LEAST64_MAX not defined
+#endif
+
+#ifndef UINT_LEAST8_MAX
+#error UINT_LEAST8_MAX not defined
+#endif
+
+#ifndef UINT_LEAST16_MAX
+#error UINT_LEAST16_MAX not defined
+#endif
+
+#ifndef UINT_LEAST32_MAX
+#error UINT_LEAST32_MAX not defined
+#endif
+
+#ifndef UINT_LEAST64_MAX
+#error UINT_LEAST64_MAX not defined
+#endif
+
+#ifndef INT_FAST8_MIN
+#error INT_FAST8_MIN not defined
+#endif
+
+#ifndef INT_FAST16_MIN
+#error INT_FAST16_MIN not defined
+#endif
+
+#ifndef INT_FAST32_MIN
+#error INT_FAST32_MIN not defined
+#endif
+
+#ifndef INT_FAST64_MIN
+#error INT_FAST64_MIN not defined
+#endif
+
+#ifndef INT_FAST8_MAX
+#error INT_FAST8_MAX not defined
+#endif
+
+#ifndef INT_FAST16_MAX
+#error INT_FAST16_MAX not defined
+#endif
+
+#ifndef INT_FAST32_MAX
+#error INT_FAST32_MAX not defined
+#endif
+
+#ifndef INT_FAST64_MAX
+#error INT_FAST64_MAX not defined
+#endif
+
+#ifndef UINT_FAST8_MAX
+#error UINT_FAST8_MAX not defined
+#endif
+
+#ifndef UINT_FAST16_MAX
+#error UINT_FAST16_MAX not defined
+#endif
+
+#ifndef UINT_FAST32_MAX
+#error UINT_FAST32_MAX not defined
+#endif
+
+#ifndef UINT_FAST64_MAX
+#error UINT_FAST64_MAX not defined
+#endif
+
+#ifndef INTPTR_MIN
+#error INTPTR_MIN not defined
+#endif
+
+#ifndef INTPTR_MAX
+#error INTPTR_MAX not defined
+#endif
+
+#ifndef UINTPTR_MAX
+#error UINTPTR_MAX not defined
+#endif
+
+#ifndef INTMAX_MIN
+#error INTMAX_MIN not defined
+#endif
+
+#ifndef INTMAX_MAX
+#error INTMAX_MAX not defined
+#endif
+
+#ifndef UINTMAX_MAX
+#error UINTMAX_MAX not defined
+#endif
+
+#ifndef PTRDIFF_MIN
+#error PTRDIFF_MIN not defined
+#endif
+
+#ifndef PTRDIFF_MAX
+#error PTRDIFF_MAX not defined
+#endif
+
+#ifndef SIG_ATOMIC_MIN
+#error SIG_ATOMIC_MIN not defined
+#endif
+
+#ifndef SIG_ATOMIC_MAX
+#error SIG_ATOMIC_MAX not defined
+#endif
+
+#ifndef SIZE_MAX
+#error SIZE_MAX not defined
+#endif
+
+#ifndef WCHAR_MIN
+#error WCHAR_MIN not defined
+#endif
+
+#ifndef WCHAR_MAX
+#error WCHAR_MAX not defined
+#endif
+
+#ifndef WINT_MIN
+#error WINT_MIN not defined
+#endif
+
+#ifndef WINT_MAX
+#error WINT_MAX not defined
+#endif
+
+#ifndef INT8_C
+#error INT8_C not defined
+#endif
+
+#ifndef INT16_C
+#error INT16_C not defined
+#endif
+
+#ifndef INT32_C
+#error INT32_C not defined
+#endif
+
+#ifndef INT64_C
+#error INT64_C not defined
+#endif
+
+#ifndef UINT8_C
+#error UINT8_C not defined
+#endif
+
+#ifndef UINT16_C
+#error UINT16_C not defined
+#endif
+
+#ifndef UINT32_C
+#error UINT32_C not defined
+#endif
+
+#ifndef UINT64_C
+#error UINT64_C not defined
+#endif
+
+#ifndef INTMAX_C
+#error INTMAX_C not defined
+#endif
+
+#ifndef UINTMAX_C
+#error UINTMAX_C not defined
+#endif
+
+#ifndef PRId8
+#error PRId8 not defined
+#endif
+
+#ifndef PRId16
+#error PRId16 not defined
+#endif
+
+#ifndef PRId32
+#error PRId32 not defined
+#endif
+
+#ifndef PRId64
+#error PRId64 not defined
+#endif
+
+#ifndef PRIdLEAST8
+#error PRIdLEAST8 not defined
+#endif
+
+#ifndef PRIdLEAST16
+#error PRIdLEAST16 not defined
+#endif
+
+#ifndef PRIdLEAST32
+#error PRIdLEAST32 not defined
+#endif
+
+#ifndef PRIdLEAST64
+#error PRIdLEAST64 not defined
+#endif
+
+#ifndef PRIdFAST8
+#error PRIdFAST8 not defined
+#endif
+
+#ifndef PRIdFAST16
+#error PRIdFAST16 not defined
+#endif
+
+#ifndef PRIdFAST32
+#error PRIdFAST32 not defined
+#endif
+
+#ifndef PRIdFAST64
+#error PRIdFAST64 not defined
+#endif
+
+#ifndef PRIdMAX
+#error PRIdMAX not defined
+#endif
+
+#ifndef PRIdPTR
+#error PRIdPTR not defined
+#endif
+
+#ifndef PRIi8
+#error PRIi8 not defined
+#endif
+
+#ifndef PRIi16
+#error PRIi16 not defined
+#endif
+
+#ifndef PRIi32
+#error PRIi32 not defined
+#endif
+
+#ifndef PRIi64
+#error PRIi64 not defined
+#endif
+
+#ifndef PRIiLEAST8
+#error PRIiLEAST8 not defined
+#endif
+
+#ifndef PRIiLEAST16
+#error PRIiLEAST16 not defined
+#endif
+
+#ifndef PRIiLEAST32
+#error PRIiLEAST32 not defined
+#endif
+
+#ifndef PRIiLEAST64
+#error PRIiLEAST64 not defined
+#endif
+
+#ifndef PRIiFAST8
+#error PRIiFAST8 not defined
+#endif
+
+#ifndef PRIiFAST16
+#error PRIiFAST16 not defined
+#endif
+
+#ifndef PRIiFAST32
+#error PRIiFAST32 not defined
+#endif
+
+#ifndef PRIiFAST64
+#error PRIiFAST64 not defined
+#endif
+
+#ifndef PRIiMAX
+#error PRIiMAX not defined
+#endif
+
+#ifndef PRIiPTR
+#error PRIiPTR not defined
+#endif
+
+#ifndef PRIo8
+#error PRIo8 not defined
+#endif
+
+#ifndef PRIo16
+#error PRIo16 not defined
+#endif
+
+#ifndef PRIo32
+#error PRIo32 not defined
+#endif
+
+#ifndef PRIo64
+#error PRIo64 not defined
+#endif
+
+#ifndef PRIoLEAST8
+#error PRIoLEAST8 not defined
+#endif
+
+#ifndef PRIoLEAST16
+#error PRIoLEAST16 not defined
+#endif
+
+#ifndef PRIoLEAST32
+#error PRIoLEAST32 not defined
+#endif
+
+#ifndef PRIoLEAST64
+#error PRIoLEAST64 not defined
+#endif
+
+#ifndef PRIoFAST8
+#error PRIoFAST8 not defined
+#endif
+
+#ifndef PRIoFAST16
+#error PRIoFAST16 not defined
+#endif
+
+#ifndef PRIoFAST32
+#error PRIoFAST32 not defined
+#endif
+
+#ifndef PRIoFAST64
+#error PRIoFAST64 not defined
+#endif
+
+#ifndef PRIoMAX
+#error PRIoMAX not defined
+#endif
+
+#ifndef PRIoPTR
+#error PRIoPTR not defined
+#endif
+
+#ifndef PRIu8
+#error PRIu8 not defined
+#endif
+
+#ifndef PRIu16
+#error PRIu16 not defined
+#endif
+
+#ifndef PRIu32
+#error PRIu32 not defined
+#endif
+
+#ifndef PRIu64
+#error PRIu64 not defined
+#endif
+
+#ifndef PRIuLEAST8
+#error PRIuLEAST8 not defined
+#endif
+
+#ifndef PRIuLEAST16
+#error PRIuLEAST16 not defined
+#endif
+
+#ifndef PRIuLEAST32
+#error PRIuLEAST32 not defined
+#endif
+
+#ifndef PRIuLEAST64
+#error PRIuLEAST64 not defined
+#endif
+
+#ifndef PRIuFAST8
+#error PRIuFAST8 not defined
+#endif
+
+#ifndef PRIuFAST16
+#error PRIuFAST16 not defined
+#endif
+
+#ifndef PRIuFAST32
+#error PRIuFAST32 not defined
+#endif
+
+#ifndef PRIuFAST64
+#error PRIuFAST64 not defined
+#endif
+
+#ifndef PRIuMAX
+#error PRIuMAX not defined
+#endif
+
+#ifndef PRIuPTR
+#error PRIuPTR not defined
+#endif
+
+#ifndef PRIx8
+#error PRIx8 not defined
+#endif
+
+#ifndef PRIx16
+#error PRIx16 not defined
+#endif
+
+#ifndef PRIx32
+#error PRIx32 not defined
+#endif
+
+#ifndef PRIx64
+#error PRIx64 not defined
+#endif
+
+#ifndef PRIxLEAST8
+#error PRIxLEAST8 not defined
+#endif
+
+#ifndef PRIxLEAST16
+#error PRIxLEAST16 not defined
+#endif
+
+#ifndef PRIxLEAST32
+#error PRIxLEAST32 not defined
+#endif
+
+#ifndef PRIxLEAST64
+#error PRIxLEAST64 not defined
+#endif
+
+#ifndef PRIxFAST8
+#error PRIxFAST8 not defined
+#endif
+
+#ifndef PRIxFAST16
+#error PRIxFAST16 not defined
+#endif
+
+#ifndef PRIxFAST32
+#error PRIxFAST32 not defined
+#endif
+
+#ifndef PRIxFAST64
+#error PRIxFAST64 not defined
+#endif
+
+#ifndef PRIxMAX
+#error PRIxMAX not defined
+#endif
+
+#ifndef PRIxPTR
+#error PRIxPTR not defined
+#endif
+
+#ifndef PRIX8
+#error PRIX8 not defined
+#endif
+
+#ifndef PRIX16
+#error PRIX16 not defined
+#endif
+
+#ifndef PRIX32
+#error PRIX32 not defined
+#endif
+
+#ifndef PRIX64
+#error PRIX64 not defined
+#endif
+
+#ifndef PRIXLEAST8
+#error PRIXLEAST8 not defined
+#endif
+
+#ifndef PRIXLEAST16
+#error PRIXLEAST16 not defined
+#endif
+
+#ifndef PRIXLEAST32
+#error PRIXLEAST32 not defined
+#endif
+
+#ifndef PRIXLEAST64
+#error PRIXLEAST64 not defined
+#endif
+
+#ifndef PRIXFAST8
+#error PRIXFAST8 not defined
+#endif
+
+#ifndef PRIXFAST16
+#error PRIXFAST16 not defined
+#endif
+
+#ifndef PRIXFAST32
+#error PRIXFAST32 not defined
+#endif
+
+#ifndef PRIXFAST64
+#error PRIXFAST64 not defined
+#endif
+
+#ifndef PRIXMAX
+#error PRIXMAX not defined
+#endif
+
+#ifndef PRIXPTR
+#error PRIXPTR not defined
+#endif
+
+#ifndef SCNd8
+#error SCNd8 not defined
+#endif
+
+#ifndef SCNd16
+#error SCNd16 not defined
+#endif
+
+#ifndef SCNd32
+#error SCNd32 not defined
+#endif
+
+#ifndef SCNd64
+#error SCNd64 not defined
+#endif
+
+#ifndef SCNdLEAST8
+#error SCNdLEAST8 not defined
+#endif
+
+#ifndef SCNdLEAST16
+#error SCNdLEAST16 not defined
+#endif
+
+#ifndef SCNdLEAST32
+#error SCNdLEAST32 not defined
+#endif
+
+#ifndef SCNdLEAST64
+#error SCNdLEAST64 not defined
+#endif
+
+#ifndef SCNdFAST8
+#error SCNdFAST8 not defined
+#endif
+
+#ifndef SCNdFAST16
+#error SCNdFAST16 not defined
+#endif
+
+#ifndef SCNdFAST32
+#error SCNdFAST32 not defined
+#endif
+
+#ifndef SCNdFAST64
+#error SCNdFAST64 not defined
+#endif
+
+#ifndef SCNdMAX
+#error SCNdMAX not defined
+#endif
+
+#ifndef SCNdPTR
+#error SCNdPTR not defined
+#endif
+
+#ifndef SCNi8
+#error SCNi8 not defined
+#endif
+
+#ifndef SCNi16
+#error SCNi16 not defined
+#endif
+
+#ifndef SCNi32
+#error SCNi32 not defined
+#endif
+
+#ifndef SCNi64
+#error SCNi64 not defined
+#endif
+
+#ifndef SCNiLEAST8
+#error SCNiLEAST8 not defined
+#endif
+
+#ifndef SCNiLEAST16
+#error SCNiLEAST16 not defined
+#endif
+
+#ifndef SCNiLEAST32
+#error SCNiLEAST32 not defined
+#endif
+
+#ifndef SCNiLEAST64
+#error SCNiLEAST64 not defined
+#endif
+
+#ifndef SCNiFAST8
+#error SCNiFAST8 not defined
+#endif
+
+#ifndef SCNiFAST16
+#error SCNiFAST16 not defined
+#endif
+
+#ifndef SCNiFAST32
+#error SCNiFAST32 not defined
+#endif
+
+#ifndef SCNiFAST64
+#error SCNiFAST64 not defined
+#endif
+
+#ifndef SCNiMAX
+#error SCNiMAX not defined
+#endif
+
+#ifndef SCNiPTR
+#error SCNiPTR not defined
+#endif
+
+#ifndef SCNo8
+#error SCNo8 not defined
+#endif
+
+#ifndef SCNo16
+#error SCNo16 not defined
+#endif
+
+#ifndef SCNo32
+#error SCNo32 not defined
+#endif
+
+#ifndef SCNo64
+#error SCNo64 not defined
+#endif
+
+#ifndef SCNoLEAST8
+#error SCNoLEAST8 not defined
+#endif
+
+#ifndef SCNoLEAST16
+#error SCNoLEAST16 not defined
+#endif
+
+#ifndef SCNoLEAST32
+#error SCNoLEAST32 not defined
+#endif
+
+#ifndef SCNoLEAST64
+#error SCNoLEAST64 not defined
+#endif
+
+#ifndef SCNoFAST8
+#error SCNoFAST8 not defined
+#endif
+
+#ifndef SCNoFAST16
+#error SCNoFAST16 not defined
+#endif
+
+#ifndef SCNoFAST32
+#error SCNoFAST32 not defined
+#endif
+
+#ifndef SCNoFAST64
+#error SCNoFAST64 not defined
+#endif
+
+#ifndef SCNoMAX
+#error SCNoMAX not defined
+#endif
+
+#ifndef SCNoPTR
+#error SCNoPTR not defined
+#endif
+
+#ifndef SCNu8
+#error SCNu8 not defined
+#endif
+
+#ifndef SCNu16
+#error SCNu16 not defined
+#endif
+
+#ifndef SCNu32
+#error SCNu32 not defined
+#endif
+
+#ifndef SCNu64
+#error SCNu64 not defined
+#endif
+
+#ifndef SCNuLEAST8
+#error SCNuLEAST8 not defined
+#endif
+
+#ifndef SCNuLEAST16
+#error SCNuLEAST16 not defined
+#endif
+
+#ifndef SCNuLEAST32
+#error SCNuLEAST32 not defined
+#endif
+
+#ifndef SCNuLEAST64
+#error SCNuLEAST64 not defined
+#endif
+
+#ifndef SCNuFAST8
+#error SCNuFAST8 not defined
+#endif
+
+#ifndef SCNuFAST16
+#error SCNuFAST16 not defined
+#endif
+
+#ifndef SCNuFAST32
+#error SCNuFAST32 not defined
+#endif
+
+#ifndef SCNuFAST64
+#error SCNuFAST64 not defined
+#endif
+
+#ifndef SCNuMAX
+#error SCNuMAX not defined
+#endif
+
+#ifndef SCNuPTR
+#error SCNuPTR not defined
+#endif
+
+#ifndef SCNx8
+#error SCNx8 not defined
+#endif
+
+#ifndef SCNx16
+#error SCNx16 not defined
+#endif
+
+#ifndef SCNx32
+#error SCNx32 not defined
+#endif
+
+#ifndef SCNx64
+#error SCNx64 not defined
+#endif
+
+#ifndef SCNxLEAST8
+#error SCNxLEAST8 not defined
+#endif
+
+#ifndef SCNxLEAST16
+#error SCNxLEAST16 not defined
+#endif
+
+#ifndef SCNxLEAST32
+#error SCNxLEAST32 not defined
+#endif
+
+#ifndef SCNxLEAST64
+#error SCNxLEAST64 not defined
+#endif
+
+#ifndef SCNxFAST8
+#error SCNxFAST8 not defined
+#endif
+
+#ifndef SCNxFAST16
+#error SCNxFAST16 not defined
+#endif
+
+#ifndef SCNxFAST32
+#error SCNxFAST32 not defined
+#endif
+
+#ifndef SCNxFAST64
+#error SCNxFAST64 not defined
+#endif
+
+#ifndef SCNxMAX
+#error SCNxMAX not defined
+#endif
+
+#ifndef SCNxPTR
+#error SCNxPTR not defined
+#endif
+
+template <class T> void test()
+{
+    T t = 0;
+    ((void)t); // Prevent unused warning
+}
+
+int main(int, char**)
+{
+    test<int8_t >();
+    test<int16_t>();
+    test<int32_t>();
+    test<int64_t>();
+
+    test<uint8_t >();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+
+    test<int_least8_t >();
+    test<int_least16_t>();
+    test<int_least32_t>();
+    test<int_least64_t>();
+
+    test<uint_least8_t >();
+    test<uint_least16_t>();
+    test<uint_least32_t>();
+    test<uint_least64_t>();
+
+    test<int_fast8_t >();
+    test<int_fast16_t>();
+    test<int_fast32_t>();
+    test<int_fast64_t>();
+
+    test<uint_fast8_t >();
+    test<uint_fast16_t>();
+    test<uint_fast32_t>();
+    test<uint_fast64_t>();
+
+    test<intptr_t >();
+    test<uintptr_t>();
+    test<intmax_t >();
+    test<uintmax_t>();
+
+    {
+    imaxdiv_t  i1 = {};
+    ((void)i1); // Prevent unused warning
+    }
+
+    intmax_t i = 0;
+    ((void)i); // Prevent unused warning
+    static_assert((std::is_same<decltype(imaxabs(i)), intmax_t>::value), "");
+    static_assert((std::is_same<decltype(imaxdiv(i, i)), imaxdiv_t>::value), "");
+    static_assert((std::is_same<decltype(strtoimax("", (char**)0, 0)), intmax_t>::value), "");
+    static_assert((std::is_same<decltype(strtoumax("", (char**)0, 0)), uintmax_t>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_same<decltype(wcstoimax(L"", (wchar_t**)0, 0)), intmax_t>::value), "");
+    static_assert((std::is_same<decltype(wcstoumax(L"", (wchar_t**)0, 0)), uintmax_t>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/iso646_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/iso646_h.pass.cpp
new file mode 100644
index 0000000..61510fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/iso646_h.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iso646.h>
+
+#include <iso646.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    // Nothing to test
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/limits_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/limits_h.pass.cpp
new file mode 100644
index 0000000..bd0c7b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/limits_h.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+ // test limits.h
+
+#include <limits.h>
+
+#include "test_macros.h"
+
+#ifndef CHAR_BIT
+#error CHAR_BIT not defined
+#endif
+
+#ifndef SCHAR_MIN
+#error SCHAR_MIN not defined
+#endif
+
+#ifndef SCHAR_MAX
+#error SCHAR_MAX not defined
+#endif
+
+#ifndef UCHAR_MAX
+#error UCHAR_MAX not defined
+#endif
+
+#ifndef CHAR_MIN
+#error CHAR_MIN not defined
+#endif
+
+#ifndef CHAR_MAX
+#error CHAR_MAX not defined
+#endif
+
+#ifndef MB_LEN_MAX
+#error MB_LEN_MAX not defined
+#endif
+
+#ifndef SHRT_MIN
+#error SHRT_MIN not defined
+#endif
+
+#ifndef SHRT_MAX
+#error SHRT_MAX not defined
+#endif
+
+#ifndef USHRT_MAX
+#error USHRT_MAX not defined
+#endif
+
+#ifndef INT_MIN
+#error INT_MIN not defined
+#endif
+
+#ifndef INT_MAX
+#error INT_MAX not defined
+#endif
+
+#ifndef UINT_MAX
+#error UINT_MAX not defined
+#endif
+
+#ifndef LONG_MIN
+#error LONG_MIN not defined
+#endif
+
+#ifndef LONG_MAX
+#error LONG_MAX not defined
+#endif
+
+#ifndef ULONG_MAX
+#error ULONG_MAX not defined
+#endif
+
+#ifndef LLONG_MIN
+#error LLONG_MIN not defined
+#endif
+
+#ifndef LLONG_MAX
+#error LLONG_MAX not defined
+#endif
+
+#ifndef ULLONG_MAX
+#error ULLONG_MAX not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/locale_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/locale_h.pass.cpp
new file mode 100644
index 0000000..9848f07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/locale_h.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <locale.h>
+
+#include <locale.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef LC_ALL
+#error LC_ALL not defined
+#endif
+
+#ifndef LC_COLLATE
+#error LC_COLLATE not defined
+#endif
+
+#ifndef LC_CTYPE
+#error LC_CTYPE not defined
+#endif
+
+#ifndef LC_MONETARY
+#error LC_MONETARY not defined
+#endif
+
+#ifndef LC_NUMERIC
+#error LC_NUMERIC not defined
+#endif
+
+#ifndef LC_TIME
+#error LC_TIME not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+int main(int, char**)
+{
+    lconv lc; ((void)lc);
+    static_assert((std::is_same<decltype(setlocale(0, "")), char*>::value), "");
+    static_assert((std::is_same<decltype(localeconv()), lconv*>::value), "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/math_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/math_h.pass.cpp
new file mode 100644
index 0000000..db815f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/math_h.pass.cpp
@@ -0,0 +1,1074 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <math.h>
+
+#include <math.h>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "hexfloat.h"
+#include "truncate_fp.h"
+#include "type_algorithms.h"
+
+// convertible to int/float/double/etc
+template <class T, int N=0>
+struct Value {
+    operator T () { return T(N); }
+};
+
+// See PR21083
+// Ambiguous is a user-defined type that defines its own overloads of cmath
+// functions. When the std overloads are candidates too (by using or adl),
+// they should not interfere.
+struct Ambiguous : std::true_type { // ADL
+    operator float () { return 0.f; }
+    operator double () { return 0.; }
+};
+Ambiguous abs(Ambiguous){ return Ambiguous(); }
+Ambiguous acos(Ambiguous){ return Ambiguous(); }
+Ambiguous asin(Ambiguous){ return Ambiguous(); }
+Ambiguous atan(Ambiguous){ return Ambiguous(); }
+Ambiguous atan2(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous ceil(Ambiguous){ return Ambiguous(); }
+Ambiguous cos(Ambiguous){ return Ambiguous(); }
+Ambiguous cosh(Ambiguous){ return Ambiguous(); }
+Ambiguous exp(Ambiguous){ return Ambiguous(); }
+Ambiguous fabs(Ambiguous){ return Ambiguous(); }
+Ambiguous floor(Ambiguous){ return Ambiguous(); }
+Ambiguous fmod(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous frexp(Ambiguous, int*){ return Ambiguous(); }
+Ambiguous ldexp(Ambiguous, int){ return Ambiguous(); }
+Ambiguous log(Ambiguous){ return Ambiguous(); }
+Ambiguous log10(Ambiguous){ return Ambiguous(); }
+Ambiguous modf(Ambiguous, Ambiguous*){ return Ambiguous(); }
+Ambiguous pow(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous sin(Ambiguous){ return Ambiguous(); }
+Ambiguous sinh(Ambiguous){ return Ambiguous(); }
+Ambiguous sqrt(Ambiguous){ return Ambiguous(); }
+Ambiguous tan(Ambiguous){ return Ambiguous(); }
+Ambiguous tanh(Ambiguous){ return Ambiguous(); }
+Ambiguous signbit(Ambiguous){ return Ambiguous(); }
+Ambiguous fpclassify(Ambiguous){ return Ambiguous(); }
+Ambiguous isfinite(Ambiguous){ return Ambiguous(); }
+Ambiguous isnormal(Ambiguous){ return Ambiguous(); }
+Ambiguous isgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous isgreaterequal(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous isless(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous islessequal(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous islessgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous isunordered(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous acosh(Ambiguous){ return Ambiguous(); }
+Ambiguous asinh(Ambiguous){ return Ambiguous(); }
+Ambiguous atanh(Ambiguous){ return Ambiguous(); }
+Ambiguous cbrt(Ambiguous){ return Ambiguous(); }
+Ambiguous copysign(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous erf(Ambiguous){ return Ambiguous(); }
+Ambiguous erfc(Ambiguous){ return Ambiguous(); }
+Ambiguous exp2(Ambiguous){ return Ambiguous(); }
+Ambiguous expm1(Ambiguous){ return Ambiguous(); }
+Ambiguous fdim(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous fma(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous fmax(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous fmin(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous hypot(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous ilogb(Ambiguous){ return Ambiguous(); }
+Ambiguous lgamma(Ambiguous){ return Ambiguous(); }
+Ambiguous llrint(Ambiguous){ return Ambiguous(); }
+Ambiguous llround(Ambiguous){ return Ambiguous(); }
+Ambiguous log1p(Ambiguous){ return Ambiguous(); }
+Ambiguous log2(Ambiguous){ return Ambiguous(); }
+Ambiguous logb(Ambiguous){ return Ambiguous(); }
+Ambiguous lrint(Ambiguous){ return Ambiguous(); }
+Ambiguous lround(Ambiguous){ return Ambiguous(); }
+Ambiguous nearbyint(Ambiguous){ return Ambiguous(); }
+Ambiguous nextafter(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous nexttoward(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous remainder(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous remquo(Ambiguous, Ambiguous, int*){ return Ambiguous(); }
+Ambiguous rint(Ambiguous){ return Ambiguous(); }
+Ambiguous round(Ambiguous){ return Ambiguous(); }
+Ambiguous scalbln(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous scalbn(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous tgamma(Ambiguous){ return Ambiguous(); }
+Ambiguous trunc(Ambiguous){ return Ambiguous(); }
+
+template <class T, class = decltype(::abs(std::declval<T>()))>
+std::true_type has_abs_imp(int);
+template <class T>
+std::false_type has_abs_imp(...);
+
+template <class T>
+struct has_abs : decltype(has_abs_imp<T>(0)) {};
+
+void test_abs()
+{
+  TEST_DIAGNOSTIC_PUSH
+  TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
+
+  static_assert((std::is_same<decltype(abs((float)0)), float>::value), "");
+  static_assert((std::is_same<decltype(abs((double)0)), double>::value), "");
+  static_assert(
+      (std::is_same<decltype(abs((long double)0)), long double>::value), "");
+  static_assert((std::is_same<decltype(abs((int)0)), int>::value), "");
+  static_assert((std::is_same<decltype(abs((long)0)), long>::value), "");
+  static_assert((std::is_same<decltype(abs((long long)0)), long long>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((unsigned short)0)), int>::value),
+                "");
+
+  static_assert((std::is_same<decltype(abs(Ambiguous())), Ambiguous>::value),
+                "");
+
+  static_assert(!has_abs<unsigned>::value, "");
+  static_assert(!has_abs<unsigned long>::value, "");
+  static_assert(!has_abs<unsigned long long>::value, "");
+
+  TEST_DIAGNOSTIC_POP
+
+  assert(abs(-1.) == 1);
+}
+
+void test_acos()
+{
+    static_assert((std::is_same<decltype(acosf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(acosl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(acos(Ambiguous())), Ambiguous>::value), "");
+    assert(acos(1) == 0);
+}
+
+void test_asin()
+{
+    static_assert((std::is_same<decltype(asinf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(asinl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(asin(Ambiguous())), Ambiguous>::value), "");
+    assert(asin(0) == 0);
+}
+
+void test_atan()
+{
+    static_assert((std::is_same<decltype(atanf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(atanl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(atan(Ambiguous())), Ambiguous>::value), "");
+    assert(atan(0) == 0);
+}
+
+void test_atan2()
+{
+    static_assert((std::is_same<decltype(atan2f(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(atan2l(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(atan2(0,1) == 0);
+}
+
+void test_ceil()
+{
+    static_assert((std::is_same<decltype(ceilf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(ceill(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(ceil(Ambiguous())), Ambiguous>::value), "");
+    assert(ceil(0) == 0);
+}
+
+void test_cos()
+{
+    static_assert((std::is_same<decltype(cosf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(cosl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(cos(Ambiguous())), Ambiguous>::value), "");
+    assert(cos(0) == 1);
+}
+
+void test_cosh()
+{
+    static_assert((std::is_same<decltype(coshf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(coshl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(cosh(Ambiguous())), Ambiguous>::value), "");
+    assert(cosh(0) == 1);
+}
+
+void test_exp()
+{
+    static_assert((std::is_same<decltype(expf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(expl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(exp(Ambiguous())), Ambiguous>::value), "");
+    assert(exp(0) == 1);
+}
+
+void test_fabs()
+{
+    static_assert((std::is_same<decltype(fabsf(0.0f)), float>::value), "");
+    static_assert((std::is_same<decltype(fabsl(0.0L)), long double>::value), "");
+    static_assert((std::is_same<decltype(fabs(Ambiguous())), Ambiguous>::value), "");
+    assert(fabs(-1) == 1);
+}
+
+void test_floor()
+{
+    static_assert((std::is_same<decltype(floorf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(floorl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(floor(Ambiguous())), Ambiguous>::value), "");
+    assert(floor(1) == 1);
+}
+
+void test_fmod()
+{
+    static_assert((std::is_same<decltype(fmodf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(fmodl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(fmod(1.5,1) == .5);
+}
+
+void test_frexp()
+{
+    int ip;
+    static_assert((std::is_same<decltype(frexpf(0, &ip)), float>::value), "");
+    static_assert((std::is_same<decltype(frexpl(0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(frexp(Ambiguous(), &ip)), Ambiguous>::value), "");
+    assert(frexp(0, &ip) == 0);
+}
+
+void test_ldexp()
+{
+    int ip = 1;
+    static_assert((std::is_same<decltype(ldexpf(0, ip)), float>::value), "");
+    static_assert((std::is_same<decltype(ldexpl(0, ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(ldexp(Ambiguous(), ip)), Ambiguous>::value), "");
+    assert(ldexp(1, ip) == 2);
+}
+
+void test_log()
+{
+    static_assert((std::is_same<decltype(logf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(logl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log(Ambiguous())), Ambiguous>::value), "");
+    assert(log(1) == 0);
+}
+
+void test_log10()
+{
+    static_assert((std::is_same<decltype(log10f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(log10l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log10(Ambiguous())), Ambiguous>::value), "");
+    assert(log10(1) == 0);
+}
+
+void test_modf()
+{
+    static_assert((std::is_same<decltype(modf((float)0, (float*)0)), float>::value), "");
+    static_assert((std::is_same<decltype(modf((double)0, (double*)0)), double>::value), "");
+    static_assert((std::is_same<decltype(modf((long double)0, (long double*)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(modff(0, (float*)0)), float>::value), "");
+    static_assert((std::is_same<decltype(modfl(0, (long double*)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous>::value), "");
+    double i;
+    assert(modf(1., &i) == 0);
+}
+
+void test_pow()
+{
+    static_assert((std::is_same<decltype(powf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(powl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(pow((int)0, (int)0)), double>::value), "");
+//     static_assert((std::is_same<decltype(pow(Value<int>(), (int)0)), double>::value), "");
+//     static_assert((std::is_same<decltype(pow(Value<long double>(), (float)0)), long double>::value), "");
+//     static_assert((std::is_same<decltype(pow((float) 0, Value<float>())), float>::value), "");
+    static_assert((std::is_same<decltype(pow(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(pow(1,1) == 1);
+//     assert(pow(Value<int,1>(), Value<float,1>())  == 1);
+//     assert(pow(1.0f, Value<double,1>()) == 1);
+//     assert(pow(1.0, Value<int,1>()) == 1);
+//     assert(pow(Value<long double,1>(), 1LL) == 1);
+}
+
+void test_sin()
+{
+    static_assert((std::is_same<decltype(sinf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(sinl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(sin(Ambiguous())), Ambiguous>::value), "");
+    assert(sin(0) == 0);
+}
+
+void test_sinh()
+{
+    static_assert((std::is_same<decltype(sinhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(sinhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(sinh(Ambiguous())), Ambiguous>::value), "");
+    assert(sinh(0) == 0);
+}
+
+void test_sqrt()
+{
+    static_assert((std::is_same<decltype(sqrtf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(sqrtl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(sqrt(Ambiguous())), Ambiguous>::value), "");
+    assert(sqrt(4) == 2);
+}
+
+void test_tan()
+{
+    static_assert((std::is_same<decltype(tanf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(tanl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(tan(Ambiguous())), Ambiguous>::value), "");
+    assert(tan(0) == 0);
+}
+
+void test_tanh()
+{
+    static_assert((std::is_same<decltype(tanhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(tanhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(tanh(Ambiguous())), Ambiguous>::value), "");
+    assert(tanh(0) == 0);
+}
+
+void test_signbit()
+{
+#ifdef signbit
+#error signbit defined
+#endif
+    static_assert((std::is_same<decltype(signbit(Ambiguous())), Ambiguous>::value), "");
+    assert(signbit(-1.0) == true);
+}
+
+void test_fpclassify()
+{
+#ifdef fpclassify
+#error fpclassify defined
+#endif
+    static_assert((std::is_same<decltype(fpclassify(Ambiguous())), Ambiguous>::value), "");
+    assert(fpclassify(-1.0) == FP_NORMAL);
+}
+
+void test_isfinite()
+{
+#ifdef isfinite
+#error isfinite defined
+#endif
+    static_assert((std::is_same<decltype(isfinite(Ambiguous())), Ambiguous>::value), "");
+    assert(isfinite(-1.0) == true);
+}
+
+void test_isnormal()
+{
+#ifdef isnormal
+#error isnormal defined
+#endif
+    static_assert((std::is_same<decltype(isnormal(Ambiguous())), Ambiguous>::value), "");
+    assert(isnormal(-1.0) == true);
+}
+
+void test_isgreater()
+{
+#ifdef isgreater
+#error isgreater defined
+#endif
+    static_assert((std::is_same<decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(isgreater(-1.0, 0.F) == false);
+}
+
+void test_isgreaterequal()
+{
+#ifdef isgreaterequal
+#error isgreaterequal defined
+#endif
+    static_assert((std::is_same<decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(isgreaterequal(-1.0, 0.F) == false);
+}
+
+void test_isinf()
+{
+#ifdef isinf
+#error isinf defined
+#endif
+    static_assert((std::is_same<decltype(isinf((float)0)), bool>::value), "");
+
+    typedef decltype(isinf((double)0)) DoubleRetType;
+#ifndef __linux__
+    static_assert((std::is_same<DoubleRetType, bool>::value), "");
+#else
+    // GLIBC < 2.26 defines 'isinf(double)' with a return type of 'int' in
+    // all C++ dialects. The test should tolerate this.
+    // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
+    static_assert((std::is_same<DoubleRetType, bool>::value
+                || std::is_same<DoubleRetType, int>::value), "");
+#endif
+
+    static_assert((std::is_same<decltype(isinf(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isinf((long double)0)), bool>::value), "");
+    assert(isinf(-1.0) == false);
+}
+
+void test_isless()
+{
+#ifdef isless
+#error isless defined
+#endif
+    static_assert((std::is_same<decltype(isless(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(isless(-1.0, 0.F) == true);
+}
+
+void test_islessequal()
+{
+#ifdef islessequal
+#error islessequal defined
+#endif
+    static_assert((std::is_same<decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(islessequal(-1.0, 0.F) == true);
+}
+
+void test_islessgreater()
+{
+#ifdef islessgreater
+#error islessgreater defined
+#endif
+    static_assert((std::is_same<decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(islessgreater(-1.0, 0.F) == true);
+}
+
+void test_isnan()
+{
+#ifdef isnan
+#error isnan defined
+#endif
+    static_assert((std::is_same<decltype(isnan((float)0)), bool>::value), "");
+
+    typedef decltype(isnan((double)0)) DoubleRetType;
+#ifndef __linux__
+    static_assert((std::is_same<DoubleRetType, bool>::value), "");
+#else
+    // GLIBC < 2.26 defines 'isnan(double)' with a return type of 'int' in
+    // all C++ dialects. The test should tolerate this.
+    // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
+    static_assert((std::is_same<DoubleRetType, bool>::value
+                || std::is_same<DoubleRetType, int>::value), "");
+#endif
+
+    static_assert((std::is_same<decltype(isnan(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isnan((long double)0)), bool>::value), "");
+    assert(isnan(-1.0) == false);
+}
+
+void test_isunordered()
+{
+#ifdef isunordered
+#error isunordered defined
+#endif
+    static_assert((std::is_same<decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(isunordered(-1.0, 0.F) == false);
+}
+
+void test_acosh()
+{
+    static_assert((std::is_same<decltype(acoshf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(acoshl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(acosh(Ambiguous())), Ambiguous>::value), "");
+    assert(acosh(1) == 0);
+}
+
+void test_asinh()
+{
+    static_assert((std::is_same<decltype(asinhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(asinhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(asinh(Ambiguous())), Ambiguous>::value), "");
+    assert(asinh(0) == 0);
+}
+
+void test_atanh()
+{
+    static_assert((std::is_same<decltype(atanhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(atanhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(atanh(Ambiguous())), Ambiguous>::value), "");
+    assert(atanh(0) == 0);
+}
+
+void test_cbrt() {
+    static_assert((std::is_same<decltype(cbrtf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(cbrtl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(cbrt(Ambiguous())), Ambiguous>::value),
+                  "");
+    assert(truncate_fp(cbrt(1)) == 1);
+
+}
+
+void test_copysign()
+{
+    static_assert((std::is_same<decltype(copysignf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(copysignl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(copysign((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(copysign(1,1) == 1);
+}
+
+void test_erf()
+{
+    static_assert((std::is_same<decltype(erff(0)), float>::value), "");
+    static_assert((std::is_same<decltype(erfl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(erf(Ambiguous())), Ambiguous>::value), "");
+    assert(erf(0) == 0);
+}
+
+void test_erfc()
+{
+    static_assert((std::is_same<decltype(erfcf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(erfcl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(erfc(Ambiguous())), Ambiguous>::value), "");
+    assert(erfc(0) == 1);
+}
+
+void test_exp2()
+{
+    static_assert((std::is_same<decltype(exp2f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(exp2l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(exp2(Ambiguous())), Ambiguous>::value), "");
+    assert(exp2(1) == 2);
+}
+
+void test_expm1()
+{
+    static_assert((std::is_same<decltype(expm1f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(expm1l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(expm1(Ambiguous())), Ambiguous>::value), "");
+    assert(expm1(0) == 0);
+}
+
+void test_fdim()
+{
+    static_assert((std::is_same<decltype(fdimf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(fdiml(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fdim((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(fdim(1,0) == 1);
+}
+
+void test_fma()
+{
+    static_assert((std::is_same<decltype(fma((bool)0, (float)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fma((float)0, (float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fma((float)0, (float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fma((float)0, (float)0, (float)0)), float>::value), "");
+
+    static_assert((std::is_same<decltype(fma((bool)0, (double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fma((double)0, (double)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fma((double)0, (double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fma((double)0, (double)0,  (double)0)), double>::value), "");
+
+    static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (float)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fma((double)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fma((long double)0, (long double)0, (long double)0)), long double>::value), "");
+
+    static_assert((std::is_same<decltype(fmaf(0,0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(fmal(0,0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(fma(1,1,1) == 2);
+}
+
+void test_fmax()
+{
+    static_assert((std::is_same<decltype(fmaxf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(fmaxl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fmax((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(fmax(1,0) == 1);
+}
+
+void test_fmin()
+{
+    static_assert((std::is_same<decltype(fminf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(fminl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fmin((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(fmin(1,0) == 0);
+}
+
+void test_hypot()
+{
+    static_assert((std::is_same<decltype(hypotf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(hypotl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(hypot((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(hypot(3,4) == 5);
+}
+
+void test_ilogb()
+{
+    static_assert((std::is_same<decltype(ilogbf(0)), int>::value), "");
+    static_assert((std::is_same<decltype(ilogbl(0)), int>::value), "");
+    static_assert((std::is_same<decltype(ilogb(Ambiguous())), Ambiguous>::value), "");
+    assert(ilogb(1) == 0);
+}
+
+void test_lgamma()
+{
+    static_assert((std::is_same<decltype(lgammaf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(lgammal(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(lgamma(Ambiguous())), Ambiguous>::value), "");
+    assert(lgamma(1) == 0);
+}
+
+void test_llrint()
+{
+    static_assert((std::is_same<decltype(llrintf(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(llrintl(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(llrint(Ambiguous())), Ambiguous>::value), "");
+    assert(llrint(1) == 1LL);
+}
+
+void test_llround()
+{
+    static_assert((std::is_same<decltype(llroundf(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(llroundl(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(llround(Ambiguous())), Ambiguous>::value), "");
+    assert(llround(1) == 1LL);
+}
+
+void test_log1p()
+{
+    static_assert((std::is_same<decltype(log1pf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(log1pl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log1p(Ambiguous())), Ambiguous>::value), "");
+    assert(log1p(0) == 0);
+}
+
+void test_log2()
+{
+    static_assert((std::is_same<decltype(log2f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(log2l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log2(Ambiguous())), Ambiguous>::value), "");
+    assert(log2(1) == 0);
+}
+
+void test_logb()
+{
+    static_assert((std::is_same<decltype(logbf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(logbl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(logb(Ambiguous())), Ambiguous>::value), "");
+    assert(logb(1) == 0);
+}
+
+void test_lrint()
+{
+    static_assert((std::is_same<decltype(lrintf(0)), long>::value), "");
+    static_assert((std::is_same<decltype(lrintl(0)), long>::value), "");
+    static_assert((std::is_same<decltype(lrint(Ambiguous())), Ambiguous>::value), "");
+    assert(lrint(1) == 1L);
+}
+
+void test_lround()
+{
+    static_assert((std::is_same<decltype(lroundf(0)), long>::value), "");
+    static_assert((std::is_same<decltype(lroundl(0)), long>::value), "");
+    static_assert((std::is_same<decltype(lround(Ambiguous())), Ambiguous>::value), "");
+    assert(lround(1) == 1L);
+}
+
+void test_nan()
+{
+    static_assert((std::is_same<decltype(nan("")), double>::value), "");
+    static_assert((std::is_same<decltype(nanf("")), float>::value), "");
+    static_assert((std::is_same<decltype(nanl("")), long double>::value), "");
+}
+
+void test_nearbyint()
+{
+    static_assert((std::is_same<decltype(nearbyintf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(nearbyintl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(nearbyint(Ambiguous())), Ambiguous>::value), "");
+    assert(nearbyint(1) == 1);
+}
+
+void test_nextafter()
+{
+    static_assert((std::is_same<decltype(nextafterf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(nextafterl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(nextafter((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(nextafter(0,1) == hexfloat<double>(0x1, 0, -1074));
+}
+
+void test_nexttoward()
+{
+    static_assert((std::is_same<decltype(nexttoward((float)0, (long double)0)), float>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((bool)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((unsigned short)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((int)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((unsigned int)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((unsigned long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((long long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((unsigned long long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((double)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(nexttowardf(0, (long double)0)), float>::value), "");
+    static_assert((std::is_same<decltype(nexttowardl(0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(nexttoward(0, 1) == hexfloat<double>(0x1, 0, -1074));
+}
+
+void test_remainder()
+{
+    static_assert((std::is_same<decltype(remainderf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(remainderl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(remainder((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(remainder(0.5,1) == 0.5);
+}
+
+void test_remquo()
+{
+    int ip;
+    static_assert((std::is_same<decltype(remquof(0,0, &ip)), float>::value), "");
+    static_assert((std::is_same<decltype(remquol(0,0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(remquo((int)0, (int)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous>::value), "");
+    assert(remquo(0.5,1, &ip) == 0.5);
+}
+
+void test_rint()
+{
+    static_assert((std::is_same<decltype(rintf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(rintl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(rint(Ambiguous())), Ambiguous>::value), "");
+    assert(rint(1) == 1);
+}
+
+void test_round()
+{
+    static_assert((std::is_same<decltype(roundf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(roundl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(round(Ambiguous())), Ambiguous>::value), "");
+    assert(round(1) == 1);
+}
+
+void test_scalbln()
+{
+    static_assert((std::is_same<decltype(scalbln((float)0, (long)0)), float>::value), "");
+    static_assert((std::is_same<decltype(scalbln((bool)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((unsigned short)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((int)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((unsigned int)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((unsigned long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((long long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((unsigned long long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbln((long double)0, (long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(scalblnf(0, (long)0)), float>::value), "");
+    static_assert((std::is_same<decltype(scalblnl(0, (long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(scalbln(1, 1) == 2);
+}
+
+void test_scalbn()
+{
+    static_assert((std::is_same<decltype(scalbn((float)0, (int)0)), float>::value), "");
+    static_assert((std::is_same<decltype(scalbn((bool)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((unsigned short)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((unsigned int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((unsigned long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((long long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((unsigned long long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((double)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(scalbn((long double)0, (int)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(scalbnf(0, (int)0)), float>::value), "");
+    static_assert((std::is_same<decltype(scalbnl(0, (int)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(scalbn(1, 1) == 2);
+}
+
+void test_tgamma()
+{
+    static_assert((std::is_same<decltype(tgammaf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(tgammal(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(tgamma(Ambiguous())), Ambiguous>::value), "");
+    assert(tgamma(1) == 1);
+}
+
+void test_trunc()
+{
+    static_assert((std::is_same<decltype(truncf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(truncl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(trunc(Ambiguous())), Ambiguous>::value), "");
+    assert(trunc(1) == 1);
+}
+
+template <class PromoteResult, class Arg = void>
+struct test_single_arg {
+  template <class T = Arg>
+  void operator()() {
+    static_assert((std::is_same<decltype(::acos(T())), PromoteResult>::value), "");
+    (void)::acos(T());
+    static_assert((std::is_same<decltype(::asin(T())), PromoteResult>::value), "");
+    (void)::asin(T());
+    static_assert((std::is_same<decltype(::atan(T())), PromoteResult>::value), "");
+    (void)::atan(T());
+    static_assert((std::is_same<decltype(::ceil(T())), PromoteResult>::value), "");
+    (void)::ceil(T());
+    static_assert((std::is_same<decltype(::cos(T())), PromoteResult>::value), "");
+    (void)::cos(T());
+    static_assert((std::is_same<decltype(::cosh(T())), PromoteResult>::value), "");
+    (void)::cosh(T());
+    static_assert((std::is_same<decltype(::exp(T())), PromoteResult>::value), "");
+    (void)::exp(T());
+    static_assert((std::is_same<decltype(::fabs(T())), PromoteResult>::value), "");
+    (void)::fabs(T());
+    static_assert((std::is_same<decltype(::floor(T())), PromoteResult>::value), "");
+    (void)::floor(T());
+    int ip;
+    static_assert((std::is_same<decltype(::frexp(T(), &ip)), PromoteResult>::value), "");
+    (void)::frexp(T(), &ip);
+    static_assert((std::is_same<decltype(::ldexp(T(), ip)), PromoteResult>::value), "");
+    (void)::ldexp(T(), ip);
+    static_assert((std::is_same<decltype(::log(T())), PromoteResult>::value), "");
+    (void)::log(T());
+    static_assert((std::is_same<decltype(::log10(T())), PromoteResult>::value), "");
+    (void)::log10(T());
+    static_assert((std::is_same<decltype(::sin(T())), PromoteResult>::value), "");
+    (void)::sin(T());
+    static_assert((std::is_same<decltype(::sinh(T())), PromoteResult>::value), "");
+    (void)::sinh(T());
+    static_assert((std::is_same<decltype(::sqrt(T())), PromoteResult>::value), "");
+    (void)::sqrt(T());
+    static_assert((std::is_same<decltype(::tan(T())), PromoteResult>::value), "");
+    (void)::tan(T());
+    static_assert((std::is_same<decltype(::tanh(T())), PromoteResult>::value), "");
+    (void)::tanh(T());
+    static_assert((std::is_same<decltype(::signbit(T())), bool>::value), "");
+    (void)::signbit(T());
+    static_assert((std::is_same<decltype(::fpclassify(T())), int>::value), "");
+    (void)::fpclassify(T());
+    static_assert((std::is_same<decltype(::isfinite(T())), bool>::value), "");
+    (void)::isfinite(T());
+    static_assert((std::is_same<decltype(::isnormal(T())), bool>::value), "");
+    (void)::isnormal(T());
+    static_assert((std::is_same<decltype(::acosh(T())), PromoteResult>::value), "");
+    (void)::acosh(T());
+    static_assert((std::is_same<decltype(::asinh(T())), PromoteResult>::value), "");
+    (void)::asinh(T());
+    static_assert((std::is_same<decltype(::atanh(T())), PromoteResult>::value), "");
+    (void)::atanh(T());
+    static_assert((std::is_same<decltype(::cbrt(T())), PromoteResult>::value), "");
+    (void)::cbrt(T());
+    static_assert((std::is_same<decltype(::erf(T())), PromoteResult>::value), "");
+    (void)::erf(T());
+    static_assert((std::is_same<decltype(::erfc(T())), PromoteResult>::value), "");
+    (void)::erfc(T());
+    static_assert((std::is_same<decltype(::exp2(T())), PromoteResult>::value), "");
+    (void)::exp2(T());
+    static_assert((std::is_same<decltype(::expm1(T())), PromoteResult>::value), "");
+    (void)::expm1(T());
+    static_assert((std::is_same<decltype(::ilogb(T())), int>::value), "");
+    (void)::ilogb(T());
+    static_assert((std::is_same<decltype(::lgamma(T())), PromoteResult>::value), "");
+    (void)::lgamma(T());
+    static_assert((std::is_same<decltype(::llrint(T())), long long>::value), "");
+    (void)::llrint(T());
+    static_assert((std::is_same<decltype(::llround(T())), long long>::value), "");
+    (void)::llround(T());
+    static_assert((std::is_same<decltype(::log1p(T())), PromoteResult>::value), "");
+    (void)::log1p(T());
+    static_assert((std::is_same<decltype(::log2(T())), PromoteResult>::value), "");
+    (void)::log2(T());
+    static_assert((std::is_same<decltype(::logb(T())), PromoteResult>::value), "");
+    (void)::logb(T());
+    static_assert((std::is_same<decltype(::lrint(T())), long>::value), "");
+    (void)::lrint(T());
+    static_assert((std::is_same<decltype(::lround(T())), long>::value), "");
+    (void)::lround(T());
+    static_assert((std::is_same<decltype(::nearbyint(T())), PromoteResult>::value), "");
+    (void)::nearbyint(T());
+    static_assert((std::is_same<decltype(::rint(T())), PromoteResult>::value), "");
+    (void)::rint(T());
+    static_assert((std::is_same<decltype(::round(T())), PromoteResult>::value), "");
+    (void)::round(T());
+    static_assert((std::is_same<decltype(::trunc(T())), PromoteResult>::value), "");
+    (void)::trunc(T());
+    static_assert((std::is_same<decltype(::tgamma(T())), PromoteResult>::value), "");
+    (void)::tgamma(T());
+  }
+};
+
+template <class PromoteResult, class Arg1 = void, class Arg2 = void>
+struct test_two_args {
+  template <class T = Arg1, class U = Arg2>
+  void operator()() {
+    static_assert((std::is_same<decltype(::atan2(T(), U())), PromoteResult>::value), "");
+    (void)::atan2(T(), U());
+    static_assert((std::is_same<decltype(::fmod(T(), U())), PromoteResult>::value), "");
+    (void)::fmod(T(), U());
+    static_assert((std::is_same<decltype(::pow(T(), U())), PromoteResult>::value), "");
+    (void)::pow(T(), U());
+    static_assert((std::is_same<decltype(::isgreater(T(), U())), bool>::value), "");
+    (void)::isgreater(T(), U());
+    static_assert((std::is_same<decltype(::isgreaterequal(T(), U())), bool>::value), "");
+    (void)::isgreaterequal(T(), U());
+    static_assert((std::is_same<decltype(::isless(T(), U())), bool>::value), "");
+    (void)::isless(T(), U());
+    static_assert((std::is_same<decltype(::islessequal(T(), U())), bool>::value), "");
+    (void)::islessequal(T(), U());
+    static_assert((std::is_same<decltype(::islessgreater(T(), U())), bool>::value), "");
+    (void)::islessgreater(T(), U());
+    static_assert((std::is_same<decltype(::isunordered(T(), U())), bool>::value), "");
+    (void)::isunordered(T(), U());
+    static_assert((std::is_same<decltype(::copysign(T(), U())), PromoteResult>::value), "");
+    (void)::copysign(T(), U());
+    static_assert((std::is_same<decltype(::fdim(T(), U())), PromoteResult>::value), "");
+    (void)::fdim(T(), U());
+    static_assert((std::is_same<decltype(::fmax(T(), U())), PromoteResult>::value), "");
+    (void)::fmax(T(), U());
+    static_assert((std::is_same<decltype(::fmin(T(), U())), PromoteResult>::value), "");
+    (void)::fmin(T(), U());
+    static_assert((std::is_same<decltype(::hypot(T(), U())), PromoteResult>::value), "");
+    (void)::hypot(T(), U());
+    static_assert((std::is_same<decltype(::nextafter(T(), U())), PromoteResult>::value), "");
+    (void)::nextafter(T(), U());
+    static_assert((std::is_same<decltype(::remainder(T(), U())), PromoteResult>::value), "");
+    (void)::remainder(T(), U());
+    int ip;
+    static_assert((std::is_same<decltype(::remquo(T(), U(), &ip)), PromoteResult>::value), "");
+    ::remquo(T(), U(), &ip);
+  }
+};
+
+template <class PromoteResult, class Arg1 = void, class Arg2 = void, class Arg3 = void>
+struct test_three_args {
+  template <class T = Arg1, class U = Arg2, class V = Arg3>
+  void operator()() {
+    static_assert((std::is_same<decltype(::fma(T(), U(), V())), PromoteResult>::value), "");
+    (void)::fma(T(), U(), V());
+  }
+};
+
+struct CallTwoArgs {
+  using integral_float_double = meta::concatenate_t<meta::integral_types, meta::type_list<float, double> >;
+
+  template <class Arg2>
+  void operator()() {
+    meta::for_each(integral_float_double(), test_two_args</*PromoteResult=*/double, /*Iterate*/void, Arg2>());
+  }
+};
+
+template <class T>
+struct CallThreeArgs {
+  using integral_float_double = meta::concatenate_t<meta::integral_types, meta::type_list<float, double> >;
+
+  template <class Arg3>
+  struct Helper {
+
+    template <class Arg2>
+    void operator()() {
+      meta::for_each(integral_float_double(), test_three_args</*PromoteResult=*/double, /*Iterate*/void, Arg2, Arg3>());
+    }
+  };
+
+  template <class Arg3>
+  void operator()() {
+    meta::for_each(integral_float_double(), Helper<Arg3>());
+  }
+};
+
+int main(int, char**)
+{
+  meta::for_each(meta::integral_types(), test_single_arg</*PromoteResult=*/double>());
+  test_single_arg</*PromoteResult=*/float, /*Arg=*/float>();
+  test_single_arg</*PromoteResult=*/double, /*Arg=*/double>();
+  test_single_arg</*PromoteResult=*/long double, /*Arg=*/long double>();
+
+  meta::for_each(meta::integral_types(), CallTwoArgs());
+
+  meta::for_each(
+      meta::integral_types(), test_two_args</*PromoteResult=*/long double, /*Arg1=*/void, /*Arg2=*/long double>());
+
+  test_two_args</*PromoteResult=*/float, /*Args=*/float, float>();
+  test_two_args</*PromoteResult=*/float, /*Args=*/double, double>();
+  test_two_args</*PromoteResult=*/double, /*Args=*/float, double>();
+  test_two_args</*PromoteResult=*/double, /*Args=*/double, double>();
+
+  meta::for_each(meta::integral_types(), CallThreeArgs<double>());
+  meta::for_each(
+      meta::integral_types(), test_three_args</*PromoteResult=*/long double, /*Iterate*/ void, long double, double>());
+
+  test_three_args</*PromoteResult=*/float, /*Args=*/float, float, float>();
+  test_three_args</*PromoteResult=*/double, /*Args=*/double, double, double>();
+  test_three_args</*PromoteResult=*/long double, /*Args=*/long double, long double, long double>();
+
+  test_abs();
+  test_acos();
+  test_asin();
+  test_atan();
+  test_atan2();
+  test_ceil();
+  test_cos();
+  test_cosh();
+  test_exp();
+  test_fabs();
+  test_floor();
+  test_fmod();
+  test_frexp();
+  test_ldexp();
+  test_log();
+  test_log10();
+  test_modf();
+  test_pow();
+  test_sin();
+  test_sinh();
+  test_sqrt();
+  test_tan();
+  test_tanh();
+  test_signbit();
+  test_fpclassify();
+  test_isfinite();
+  test_isnormal();
+  test_isgreater();
+  test_isgreaterequal();
+  test_isinf();
+  test_isless();
+  test_islessequal();
+  test_islessgreater();
+  test_isnan();
+  test_isunordered();
+  test_acosh();
+  test_asinh();
+  test_atanh();
+  test_cbrt();
+  test_copysign();
+  test_erf();
+  test_erfc();
+  test_exp2();
+  test_expm1();
+  test_fdim();
+  test_fma();
+  test_fmax();
+  test_fmin();
+  test_hypot();
+  test_ilogb();
+  test_lgamma();
+  test_llrint();
+  test_llround();
+  test_log1p();
+  test_log2();
+  test_logb();
+  test_lrint();
+  test_lround();
+  test_nan();
+  test_nearbyint();
+  test_nextafter();
+  test_nexttoward();
+  test_remainder();
+  test_remquo();
+  test_rint();
+  test_round();
+  test_scalbln();
+  test_scalbn();
+  test_tgamma();
+  test_trunc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/setjmp_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/setjmp_h.pass.cpp
new file mode 100644
index 0000000..3c93801
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/setjmp_h.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <setjmp.h>
+
+#include <setjmp.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef setjmp
+#error setjmp not defined
+#endif
+
+int main(int, char**)
+{
+    jmp_buf jb;
+    ((void)jb); // Prevent unused warning
+    static_assert((std::is_same<decltype(longjmp(jb, 0)), void>::value),
+                  "std::is_same<decltype(longjmp(jb, 0)), void>::value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/signal_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/signal_h.pass.cpp
new file mode 100644
index 0000000..07a729e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/signal_h.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <signal.h>
+
+#include <signal.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef SIG_DFL
+#error SIG_DFL not defined
+#endif
+
+#ifndef SIG_ERR
+#error SIG_ERR not defined
+#endif
+
+#ifndef SIG_IGN
+#error SIG_IGN not defined
+#endif
+
+#ifndef SIGABRT
+#error SIGABRT not defined
+#endif
+
+#ifndef SIGFPE
+#error SIGFPE not defined
+#endif
+
+#ifndef SIGILL
+#error SIGILL not defined
+#endif
+
+#ifndef SIGINT
+#error SIGINT not defined
+#endif
+
+#ifndef SIGSEGV
+#error SIGSEGV not defined
+#endif
+
+#ifndef SIGTERM
+#error SIGTERM not defined
+#endif
+
+int main(int, char**)
+{
+    sig_atomic_t sig; ((void)sig);
+    typedef void (*func)(int);
+    static_assert((std::is_same<decltype(signal(0, (func)0)), func>::value), "");
+    static_assert((std::is_same<decltype(raise(0)), int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdarg_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdarg_h.pass.cpp
new file mode 100644
index 0000000..feb9c4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdarg_h.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdarg.h>
+
+#include <stdarg.h>
+
+#include "test_macros.h"
+
+#ifndef va_arg
+#error va_arg not defined
+#endif
+
+#if TEST_STD_VER >= 11
+#  ifndef va_copy
+#    error va_copy is not defined when c++ >= 11
+#  endif
+#endif
+
+#ifndef va_end
+#error va_end not defined
+#endif
+
+#ifndef va_start
+#error va_start not defined
+#endif
+
+int main(int, char**)
+{
+    va_list va;
+    ((void)va);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdbool_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdbool_h.pass.cpp
new file mode 100644
index 0000000..ca580a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdbool_h.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdbool.h>
+
+#include <stdbool.h>
+
+#include "test_macros.h"
+
+#ifndef __bool_true_false_are_defined
+#error __bool_true_false_are_defined not defined
+#endif
+
+#ifdef bool
+#error bool should not be defined
+#endif
+
+#ifdef true
+#error true should not be defined
+#endif
+
+#ifdef false
+#error false should not be defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stddef_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stddef_h.pass.cpp
new file mode 100644
index 0000000..1fe48b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stddef_h.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <stddef.h>
+
+#include <stddef.h>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef offsetof
+#error offsetof not defined
+#endif
+
+int main(int, char**)
+{
+    void *p = NULL;
+    assert(!p);
+
+    static_assert(sizeof(size_t) == sizeof(void*),
+                  "sizeof(size_t) == sizeof(void*)");
+    static_assert(std::is_unsigned<size_t>::value,
+                  "std::is_unsigned<size_t>::value");
+    static_assert(std::is_integral<size_t>::value,
+                  "std::is_integral<size_t>::value");
+    static_assert(sizeof(ptrdiff_t) == sizeof(void*),
+                  "sizeof(ptrdiff_t) == sizeof(void*)");
+    static_assert(std::is_signed<ptrdiff_t>::value,
+                  "std::is_signed<ptrdiff_t>::value");
+    static_assert(std::is_integral<ptrdiff_t>::value,
+                  "std::is_integral<ptrdiff_t>::value");
+    static_assert((std::is_same<decltype(nullptr), nullptr_t>::value),
+                  "decltype(nullptr) == nullptr_t");
+    static_assert(sizeof(nullptr_t) == sizeof(void*),
+                  "sizeof(nullptr_t) == sizeof(void*)");
+#if TEST_STD_VER >= 11
+#if TEST_STD_VER > 17
+//   P0767
+    static_assert(std::is_trivial<max_align_t>::value,
+                  "std::is_trivial<max_align_t>::value");
+    static_assert(std::is_standard_layout<max_align_t>::value,
+                  "std::is_standard_layout<max_align_t>::value");
+#else
+    static_assert(std::is_pod<max_align_t>::value,
+                  "std::is_pod<max_align_t>::value");
+#endif
+    static_assert((std::alignment_of<max_align_t>::value >=
+                  std::alignment_of<long long>::value),
+                  "std::alignment_of<max_align_t>::value >= "
+                  "std::alignment_of<long long>::value");
+    static_assert(std::alignment_of<max_align_t>::value >=
+                  std::alignment_of<long double>::value,
+                  "std::alignment_of<max_align_t>::value >= "
+                  "std::alignment_of<long double>::value");
+    static_assert(std::alignment_of<max_align_t>::value >=
+                  std::alignment_of<void*>::value,
+                  "std::alignment_of<max_align_t>::value >= "
+                  "std::alignment_of<void*>::value");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp
new file mode 100644
index 0000000..37945ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdint_h.pass.cpp
@@ -0,0 +1,299 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdint.h>
+
+#include <stdint.h>
+#include <cstddef>
+#include <csignal>
+#include <climits>
+#include <type_traits>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   include <cwctype>
+#endif
+
+int main(int, char**)
+{
+    // typedef int8_t
+    static_assert(sizeof(int8_t)*CHAR_BIT == 8,
+                 "sizeof(int8_t)*CHAR_BIT == 8");
+    static_assert(std::is_signed<int8_t>::value,
+                 "std::is_signed<int8_t>::value");
+    // typedef int16_t
+    static_assert(sizeof(int16_t)*CHAR_BIT == 16,
+                 "sizeof(int16_t)*CHAR_BIT == 16");
+    static_assert(std::is_signed<int16_t>::value,
+                 "std::is_signed<int16_t>::value");
+    // typedef int32_t
+    static_assert(sizeof(int32_t)*CHAR_BIT == 32,
+                 "sizeof(int32_t)*CHAR_BIT == 32");
+    static_assert(std::is_signed<int32_t>::value,
+                 "std::is_signed<int32_t>::value");
+    // typedef int64_t
+    static_assert(sizeof(int64_t)*CHAR_BIT == 64,
+                 "sizeof(int64_t)*CHAR_BIT == 64");
+    static_assert(std::is_signed<int64_t>::value,
+                 "std::is_signed<int64_t>::value");
+
+    // typedef uint8_t
+    static_assert(sizeof(uint8_t)*CHAR_BIT == 8,
+                 "sizeof(uint8_t)*CHAR_BIT == 8");
+    static_assert(std::is_unsigned<uint8_t>::value,
+                 "std::is_unsigned<uint8_t>::value");
+    // typedef uint16_t
+    static_assert(sizeof(uint16_t)*CHAR_BIT == 16,
+                 "sizeof(uint16_t)*CHAR_BIT == 16");
+    static_assert(std::is_unsigned<uint16_t>::value,
+                 "std::is_unsigned<uint16_t>::value");
+    // typedef uint32_t
+    static_assert(sizeof(uint32_t)*CHAR_BIT == 32,
+                 "sizeof(uint32_t)*CHAR_BIT == 32");
+    static_assert(std::is_unsigned<uint32_t>::value,
+                 "std::is_unsigned<uint32_t>::value");
+    // typedef uint64_t
+    static_assert(sizeof(uint64_t)*CHAR_BIT == 64,
+                 "sizeof(uint64_t)*CHAR_BIT == 64");
+    static_assert(std::is_unsigned<uint64_t>::value,
+                 "std::is_unsigned<uint64_t>::value");
+
+    // typedef int_least8_t
+    static_assert(sizeof(int_least8_t)*CHAR_BIT >= 8,
+                 "sizeof(int_least8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_signed<int_least8_t>::value,
+                 "std::is_signed<int_least8_t>::value");
+    // typedef int_least16_t
+    static_assert(sizeof(int_least16_t)*CHAR_BIT >= 16,
+                 "sizeof(int_least16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_signed<int_least16_t>::value,
+                 "std::is_signed<int_least16_t>::value");
+    // typedef int_least32_t
+    static_assert(sizeof(int_least32_t)*CHAR_BIT >= 32,
+                 "sizeof(int_least32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_signed<int_least32_t>::value,
+                 "std::is_signed<int_least32_t>::value");
+    // typedef int_least64_t
+    static_assert(sizeof(int_least64_t)*CHAR_BIT >= 64,
+                 "sizeof(int_least64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_signed<int_least64_t>::value,
+                 "std::is_signed<int_least64_t>::value");
+
+    // typedef uint_least8_t
+    static_assert(sizeof(uint_least8_t)*CHAR_BIT >= 8,
+                 "sizeof(uint_least8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_unsigned<uint_least8_t>::value,
+                 "std::is_unsigned<uint_least8_t>::value");
+    // typedef uint_least16_t
+    static_assert(sizeof(uint_least16_t)*CHAR_BIT >= 16,
+                 "sizeof(uint_least16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_unsigned<uint_least16_t>::value,
+                 "std::is_unsigned<uint_least16_t>::value");
+    // typedef uint_least32_t
+    static_assert(sizeof(uint_least32_t)*CHAR_BIT >= 32,
+                 "sizeof(uint_least32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_unsigned<uint_least32_t>::value,
+                 "std::is_unsigned<uint_least32_t>::value");
+    // typedef uint_least64_t
+    static_assert(sizeof(uint_least64_t)*CHAR_BIT >= 64,
+                 "sizeof(uint_least64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_unsigned<uint_least64_t>::value,
+                 "std::is_unsigned<uint_least64_t>::value");
+
+    // typedef int_fast8_t
+    static_assert(sizeof(int_fast8_t)*CHAR_BIT >= 8,
+                 "sizeof(int_fast8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_signed<int_fast8_t>::value,
+                 "std::is_signed<int_fast8_t>::value");
+    // typedef int_fast16_t
+    static_assert(sizeof(int_fast16_t)*CHAR_BIT >= 16,
+                 "sizeof(int_fast16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_signed<int_fast16_t>::value,
+                 "std::is_signed<int_fast16_t>::value");
+    // typedef int_fast32_t
+    static_assert(sizeof(int_fast32_t)*CHAR_BIT >= 32,
+                 "sizeof(int_fast32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_signed<int_fast32_t>::value,
+                 "std::is_signed<int_fast32_t>::value");
+    // typedef int_fast64_t
+    static_assert(sizeof(int_fast64_t)*CHAR_BIT >= 64,
+                 "sizeof(int_fast64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_signed<int_fast64_t>::value,
+                 "std::is_signed<int_fast64_t>::value");
+
+    // typedef uint_fast8_t
+    static_assert(sizeof(uint_fast8_t)*CHAR_BIT >= 8,
+                 "sizeof(uint_fast8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_unsigned<uint_fast8_t>::value,
+                 "std::is_unsigned<uint_fast8_t>::value");
+    // typedef uint_fast16_t
+    static_assert(sizeof(uint_fast16_t)*CHAR_BIT >= 16,
+                 "sizeof(uint_fast16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_unsigned<uint_fast16_t>::value,
+                 "std::is_unsigned<uint_fast16_t>::value");
+    // typedef uint_fast32_t
+    static_assert(sizeof(uint_fast32_t)*CHAR_BIT >= 32,
+                 "sizeof(uint_fast32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_unsigned<uint_fast32_t>::value,
+                 "std::is_unsigned<uint_fast32_t>::value");
+    // typedef uint_fast64_t
+    static_assert(sizeof(uint_fast64_t)*CHAR_BIT >= 64,
+                 "sizeof(uint_fast64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_unsigned<uint_fast64_t>::value,
+                 "std::is_unsigned<uint_fast64_t>::value");
+
+    // typedef intptr_t
+    static_assert(sizeof(intptr_t) >= sizeof(void*),
+                 "sizeof(intptr_t) >= sizeof(void*)");
+    static_assert(std::is_signed<intptr_t>::value,
+                 "std::is_signed<intptr_t>::value");
+    // typedef uintptr_t
+    static_assert(sizeof(uintptr_t) >= sizeof(void*),
+                 "sizeof(uintptr_t) >= sizeof(void*)");
+    static_assert(std::is_unsigned<uintptr_t>::value,
+                 "std::is_unsigned<uintptr_t>::value");
+
+    // typedef intmax_t
+    static_assert(sizeof(intmax_t) >= sizeof(long long),
+                 "sizeof(intmax_t) >= sizeof(long long)");
+    static_assert(std::is_signed<intmax_t>::value,
+                 "std::is_signed<intmax_t>::value");
+    // typedef uintmax_t
+    static_assert(sizeof(uintmax_t) >= sizeof(unsigned long long),
+                 "sizeof(uintmax_t) >= sizeof(unsigned long long)");
+    static_assert(std::is_unsigned<uintmax_t>::value,
+                 "std::is_unsigned<uintmax_t>::value");
+
+    // INTN_MIN
+    static_assert(INT8_MIN == -128, "INT8_MIN == -128");
+    static_assert(INT16_MIN == -32768, "INT16_MIN == -32768");
+    static_assert(INT32_MIN == -2147483647 - 1, "INT32_MIN == -2147483648");
+    static_assert(INT64_MIN == -9223372036854775807LL - 1, "INT64_MIN == -9223372036854775808LL");
+
+    // INTN_MAX
+    static_assert(INT8_MAX == 127, "INT8_MAX == 127");
+    static_assert(INT16_MAX == 32767, "INT16_MAX == 32767");
+    static_assert(INT32_MAX == 2147483647, "INT32_MAX == 2147483647");
+    static_assert(INT64_MAX == 9223372036854775807LL, "INT64_MAX == 9223372036854775807LL");
+
+    // UINTN_MAX
+    static_assert(UINT8_MAX == 255, "UINT8_MAX == 255");
+    static_assert(UINT16_MAX == 65535, "UINT16_MAX == 65535");
+    static_assert(UINT32_MAX == 4294967295U, "UINT32_MAX == 4294967295");
+    static_assert(UINT64_MAX == 18446744073709551615ULL, "UINT64_MAX == 18446744073709551615ULL");
+
+    // INT_FASTN_MIN
+    static_assert(INT_FAST8_MIN <= -128, "INT_FAST8_MIN <= -128");
+    static_assert(INT_FAST16_MIN <= -32768, "INT_FAST16_MIN <= -32768");
+    static_assert(INT_FAST32_MIN <= -2147483647 - 1, "INT_FAST32_MIN <= -2147483648");
+    static_assert(INT_FAST64_MIN <= -9223372036854775807LL - 1, "INT_FAST64_MIN <= -9223372036854775808LL");
+
+    // INT_FASTN_MAX
+    static_assert(INT_FAST8_MAX >= 127, "INT_FAST8_MAX >= 127");
+    static_assert(INT_FAST16_MAX >= 32767, "INT_FAST16_MAX >= 32767");
+    static_assert(INT_FAST32_MAX >= 2147483647, "INT_FAST32_MAX >= 2147483647");
+    static_assert(INT_FAST64_MAX >= 9223372036854775807LL, "INT_FAST64_MAX >= 9223372036854775807LL");
+
+    // UINT_FASTN_MAX
+    static_assert(UINT_FAST8_MAX >= 255, "UINT_FAST8_MAX >= 255");
+    static_assert(UINT_FAST16_MAX >= 65535, "UINT_FAST16_MAX >= 65535");
+    static_assert(UINT_FAST32_MAX >= 4294967295U, "UINT_FAST32_MAX >= 4294967295");
+    static_assert(UINT_FAST64_MAX >= 18446744073709551615ULL, "UINT_FAST64_MAX >= 18446744073709551615ULL");
+
+    // INTPTR_MIN
+    assert(INTPTR_MIN == std::numeric_limits<intptr_t>::min());
+
+    // INTPTR_MAX
+    assert(INTPTR_MAX == std::numeric_limits<intptr_t>::max());
+
+    // UINTPTR_MAX
+    assert(UINTPTR_MAX == std::numeric_limits<uintptr_t>::max());
+
+    // INTMAX_MIN
+    assert(INTMAX_MIN == std::numeric_limits<intmax_t>::min());
+
+    // INTMAX_MAX
+    assert(INTMAX_MAX == std::numeric_limits<intmax_t>::max());
+
+    // UINTMAX_MAX
+    assert(UINTMAX_MAX == std::numeric_limits<uintmax_t>::max());
+
+    // PTRDIFF_MIN
+    assert(PTRDIFF_MIN == std::numeric_limits<std::ptrdiff_t>::min());
+
+    // PTRDIFF_MAX
+    assert(PTRDIFF_MAX == std::numeric_limits<std::ptrdiff_t>::max());
+
+    // SIG_ATOMIC_MIN
+    assert(SIG_ATOMIC_MIN == std::numeric_limits<sig_atomic_t>::min());
+
+    // SIG_ATOMIC_MAX
+    assert(SIG_ATOMIC_MAX == std::numeric_limits<sig_atomic_t>::max());
+
+    // SIZE_MAX
+    assert(SIZE_MAX == std::numeric_limits<size_t>::max());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    // WCHAR_MIN
+    assert(WCHAR_MIN == std::numeric_limits<wchar_t>::min());
+
+    // WCHAR_MAX
+    assert(WCHAR_MAX == std::numeric_limits<wchar_t>::max());
+
+    // WINT_MIN
+    assert(WINT_MIN == std::numeric_limits<wint_t>::min());
+
+    // WINT_MAX
+    assert(WINT_MAX == std::numeric_limits<wint_t>::max());
+#endif
+
+#ifndef INT8_C
+#error INT8_C not defined
+#endif
+
+#ifndef INT16_C
+#error INT16_C not defined
+#endif
+
+#ifndef INT32_C
+#error INT32_C not defined
+#endif
+
+#ifndef INT64_C
+#error INT64_C not defined
+#endif
+
+#ifndef UINT8_C
+#error UINT8_C not defined
+#endif
+
+#ifndef UINT16_C
+#error UINT16_C not defined
+#endif
+
+#ifndef UINT32_C
+#error UINT32_C not defined
+#endif
+
+#ifndef UINT64_C
+#error UINT64_C not defined
+#endif
+
+#ifndef INTMAX_C
+#error INTMAX_C not defined
+#endif
+
+#ifndef UINTMAX_C
+#error UINTMAX_C not defined
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdio_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdio_h.pass.cpp
new file mode 100644
index 0000000..effb633
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdio_h.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdio.h>
+
+#include <stdio.h>
+#include <type_traits>
+#include "test_macros.h"
+
+#ifdef getc
+#error getc is defined
+#endif
+
+#ifdef putc
+#error putc is defined
+#endif
+
+#ifdef clearerr
+#error clearerr is defined
+#endif
+
+#ifdef feof
+#error feof is defined
+#endif
+
+#ifdef ferror
+#error ferror is defined
+#endif
+
+#ifndef BUFSIZ
+#error BUFSIZ not defined
+#endif
+
+#ifndef EOF
+#error EOF not defined
+#endif
+
+#ifndef FILENAME_MAX
+#error FILENAME_MAX not defined
+#endif
+
+#ifndef FOPEN_MAX
+#error FOPEN_MAX not defined
+#endif
+
+#ifndef L_tmpnam
+#error L_tmpnam not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef SEEK_CUR
+#error SEEK_CUR not defined
+#endif
+
+#ifndef SEEK_END
+#error SEEK_END not defined
+#endif
+
+#ifndef SEEK_SET
+#error SEEK_SET not defined
+#endif
+
+#ifndef TMP_MAX
+#error TMP_MAX not defined
+#endif
+
+#ifndef _IOFBF
+#error _IOFBF not defined
+#endif
+
+#ifndef _IOLBF
+#error _IOLBF not defined
+#endif
+
+#ifndef _IONBF
+#error _IONBF not defined
+#endif
+
+#ifndef stderr
+#error stderr not defined
+#endif
+
+#ifndef stdin
+#error stdin not defined
+#endif
+
+#ifndef stdout
+#error stdout not defined
+#endif
+
+#include <cstdarg>
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
+
+int main(int, char**)
+{
+    FILE* fp = 0;
+    fpos_t fpos = fpos_t();
+    size_t s = 0;
+    char* cp = 0;
+    char arr[] = {'a', 'b'};
+    va_list va;
+    ((void)fp); // Prevent unused warning
+    ((void)fpos); // Prevent unused warning
+    ((void)s); // Prevent unused warning
+    ((void)cp); // Prevent unused warning
+    ((void)arr); // Prevent unused warning
+    ((void)va); // Prevent unused warning
+    static_assert((std::is_same<decltype(remove("")), int>::value), "");
+    static_assert((std::is_same<decltype(rename("","")), int>::value), "");
+    static_assert((std::is_same<decltype(tmpfile()), FILE*>::value), "");
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(tmpnam(cp)), char*>::value), "");
+    TEST_DIAGNOSTIC_POP
+    static_assert((std::is_same<decltype(fclose(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(fflush(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(fopen("", "")), FILE*>::value), "");
+    static_assert((std::is_same<decltype(freopen("", "", fp)), FILE*>::value), "");
+    static_assert((std::is_same<decltype(setbuf(fp,cp)), void>::value), "");
+    static_assert((std::is_same<decltype(vfprintf(fp,"",va)), int>::value), "");
+    static_assert((std::is_same<decltype(fprintf(fp," ")), int>::value), "");
+    static_assert((std::is_same<decltype(fscanf(fp,"")), int>::value), "");
+    static_assert((std::is_same<decltype(printf("\n")), int>::value), "");
+    static_assert((std::is_same<decltype(scanf("\n")), int>::value), "");
+    static_assert((std::is_same<decltype(snprintf(cp,0,"p")), int>::value), "");
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(sprintf(cp," ")), int>::value), "");
+    TEST_DIAGNOSTIC_POP
+    static_assert((std::is_same<decltype(sscanf("","")), int>::value), "");
+    static_assert((std::is_same<decltype(vfprintf(fp,"",va)), int>::value), "");
+    static_assert((std::is_same<decltype(vfscanf(fp,"",va)), int>::value), "");
+    static_assert((std::is_same<decltype(vprintf(" ",va)), int>::value), "");
+    static_assert((std::is_same<decltype(vscanf("",va)), int>::value), "");
+    static_assert((std::is_same<decltype(vsnprintf(cp,0," ",va)), int>::value), "");
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(vsprintf(cp," ",va)), int>::value), "");
+    TEST_DIAGNOSTIC_POP
+    static_assert((std::is_same<decltype(vsscanf("","",va)), int>::value), "");
+    static_assert((std::is_same<decltype(fgetc(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(fgets(cp,0,fp)), char*>::value), "");
+    static_assert((std::is_same<decltype(fputc(0,fp)), int>::value), "");
+    static_assert((std::is_same<decltype(fputs("",fp)), int>::value), "");
+    static_assert((std::is_same<decltype(getc(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(getchar()), int>::value), "");
+#if TEST_STD_VER < 14
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(gets(cp)), char*>::value), "");
+    TEST_DIAGNOSTIC_POP
+#endif
+    static_assert((std::is_same<decltype(putc(0,fp)), int>::value), "");
+    static_assert((std::is_same<decltype(putchar(0)), int>::value), "");
+    static_assert((std::is_same<decltype(puts("")), int>::value), "");
+    static_assert((std::is_same<decltype(ungetc(0,fp)), int>::value), "");
+    static_assert((std::is_same<decltype(fread((void*)0,0,0,fp)), size_t>::value), "");
+    static_assert((std::is_same<decltype(fwrite((const void*)arr,1,0,fp)), size_t>::value), "");
+#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
+    static_assert((std::is_same<decltype(fgetpos(fp, &fpos)), int>::value), "");
+#endif
+    static_assert((std::is_same<decltype(fseek(fp, 0,0)), int>::value), "");
+#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
+    static_assert((std::is_same<decltype(fsetpos(fp, &fpos)), int>::value), "");
+#endif
+    static_assert((std::is_same<decltype(ftell(fp)), long>::value), "");
+    static_assert((std::is_same<decltype(rewind(fp)), void>::value), "");
+    static_assert((std::is_same<decltype(clearerr(fp)), void>::value), "");
+    static_assert((std::is_same<decltype(feof(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(ferror(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(perror("")), void>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdlib_h.aligned_alloc.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdlib_h.aligned_alloc.compile.pass.cpp
new file mode 100644
index 0000000..a02a5bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdlib_h.aligned_alloc.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdlib.h>
+// ::aligned_alloc
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ::aligned_alloc is provided by the C library, but it's marked as unavailable
+// until macOS 10.15
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// ::aligned_alloc is not implemented on Windows
+// XFAIL: target={{.+}}-windows-{{.+}}
+
+// ::aligned_alloc is available starting with Android P (API 28)
+// XFAIL: target={{.+}}-android{{(eabi)?(21|22|23|24|25|26|27)}}
+
+#include <stdlib.h>
+#include <type_traits>
+
+static_assert(std::is_same<decltype(aligned_alloc(1, 0)), void*>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp
new file mode 100644
index 0000000..9d60f94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/stdlib_h.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <stdlib.h>
+
+#include <stdlib.h>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifdef abs
+#error abs is defined
+#endif
+
+#ifdef labs
+#error labs is defined
+#endif
+
+#ifdef llabs
+#error llabs is defined
+#endif
+
+#ifdef div
+#error div is defined
+#endif
+
+#ifdef ldiv
+#error ldiv is defined
+#endif
+
+#ifdef lldiv
+#error lldiv is defined
+#endif
+
+#ifndef EXIT_FAILURE
+#error EXIT_FAILURE not defined
+#endif
+
+#ifndef EXIT_SUCCESS
+#error EXIT_SUCCESS not defined
+#endif
+
+#ifndef MB_CUR_MAX
+#error MB_CUR_MAX not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef RAND_MAX
+#error RAND_MAX not defined
+#endif
+
+template <class T, class = decltype(::abs(std::declval<T>()))>
+std::true_type has_abs_imp(int);
+template <class T>
+std::false_type has_abs_imp(...);
+
+template <class T>
+struct has_abs : decltype(has_abs_imp<T>(0)) {};
+
+void test_abs() {
+  TEST_DIAGNOSTIC_PUSH
+  TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
+  static_assert((std::is_same<decltype(abs((float)0)), float>::value), "");
+  static_assert((std::is_same<decltype(abs((double)0)), double>::value), "");
+  static_assert(
+      (std::is_same<decltype(abs((long double)0)), long double>::value), "");
+  static_assert((std::is_same<decltype(abs((int)0)), int>::value), "");
+  static_assert((std::is_same<decltype(abs((long)0)), long>::value), "");
+  static_assert((std::is_same<decltype(abs((long long)0)), long long>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((unsigned short)0)), int>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((signed char)0)), int>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((short)0)), int>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),
+                "");
+  static_assert((std::is_same<decltype(abs((char)0)), int>::value),
+                "");
+
+  static_assert(!has_abs<unsigned>::value, "");
+  static_assert(!has_abs<unsigned long>::value, "");
+  static_assert(!has_abs<unsigned long long>::value, "");
+  static_assert(!has_abs<size_t>::value, "");
+
+  TEST_DIAGNOSTIC_POP
+
+  assert(abs(-1.) == 1);
+}
+
+int main(int, char**)
+{
+    size_t s = 0; ((void)s);
+    div_t d; ((void)d);
+    ldiv_t ld; ((void)ld);
+    lldiv_t lld; ((void)lld);
+    char** endptr = 0;
+    static_assert((std::is_same<decltype(atof("")), double>::value), "");
+    static_assert((std::is_same<decltype(atoi("")), int>::value), "");
+    static_assert((std::is_same<decltype(atol("")), long>::value), "");
+    static_assert((std::is_same<decltype(atoll("")), long long>::value), "");
+    static_assert((std::is_same<decltype(getenv("")), char*>::value), "");
+    static_assert((std::is_same<decltype(strtod("", endptr)), double>::value), "");
+    static_assert((std::is_same<decltype(strtof("", endptr)), float>::value), "");
+    static_assert((std::is_same<decltype(strtold("", endptr)), long double>::value), "");
+    static_assert((std::is_same<decltype(strtol("", endptr,0)), long>::value), "");
+    static_assert((std::is_same<decltype(strtoll("", endptr,0)), long long>::value), "");
+    static_assert((std::is_same<decltype(strtoul("", endptr,0)), unsigned long>::value), "");
+    static_assert((std::is_same<decltype(strtoull("", endptr,0)), unsigned long long>::value), "");
+    static_assert((std::is_same<decltype(rand()), int>::value), "");
+    static_assert((std::is_same<decltype(srand(0)), void>::value), "");
+
+    // aligned_alloc tested in stdlib_h.aligned_alloc.compile.pass.cpp
+
+    void* pv = 0;
+    void (*handler)() = 0;
+    int (*comp)(void const*, void const*) = 0;
+    static_assert((std::is_same<decltype(calloc(0,0)), void*>::value), "");
+    static_assert((std::is_same<decltype(free(0)), void>::value), "");
+    static_assert((std::is_same<decltype(malloc(0)), void*>::value), "");
+    static_assert((std::is_same<decltype(realloc(0,0)), void*>::value), "");
+    static_assert((std::is_same<decltype(abort()), void>::value), "");
+    static_assert((std::is_same<decltype(atexit(handler)), int>::value), "");
+    static_assert((std::is_same<decltype(exit(0)), void>::value), "");
+    static_assert((std::is_same<decltype(_Exit(0)), void>::value), "");
+    static_assert((std::is_same<decltype(getenv("")), char*>::value), "");
+    static_assert((std::is_same<decltype(system("")), int>::value), "");
+    static_assert((std::is_same<decltype(bsearch(pv,pv,0,0,comp)), void*>::value), "");
+    static_assert((std::is_same<decltype(qsort(pv,0,0,comp)), void>::value), "");
+    static_assert((std::is_same<decltype(abs(0)), int>::value), "");
+    static_assert((std::is_same<decltype(labs((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(llabs((long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(div(0,0)), div_t>::value), "");
+    static_assert((std::is_same<decltype(ldiv(0L,0L)), ldiv_t>::value), "");
+    static_assert((std::is_same<decltype(lldiv(0LL,0LL)), lldiv_t>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    wchar_t* pw = 0;
+    const wchar_t* pwc = 0;
+    char* pc = 0;
+    static_assert((std::is_same<decltype(mblen("",0)), int>::value), "");
+    static_assert((std::is_same<decltype(mbtowc(pw,"",0)), int>::value), "");
+    static_assert((std::is_same<decltype(wctomb(pc,L' ')), int>::value), "");
+    static_assert((std::is_same<decltype(mbstowcs(pw,"",0)), size_t>::value), "");
+    static_assert((std::is_same<decltype(wcstombs(pc,pwc,0)), size_t>::value), "");
+#endif
+
+    test_abs();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp
new file mode 100644
index 0000000..5ccccd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string.h>
+
+#include <string.h>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+int main(int, char**)
+{
+    // Functions we get directly from the C library (just check the signature)
+    {
+        size_t s = 0;
+        void* vp = 0;
+        const void* vpc = 0;
+        char* cp = 0;
+        const char* cpc = 0;
+        ASSERT_SAME_TYPE(void*,         decltype(memcpy(vp, vpc, s)));
+        ASSERT_SAME_TYPE(void*,         decltype(memmove(vp, vpc, s)));
+        ASSERT_SAME_TYPE(char*,         decltype(strcpy(cp, cpc)));
+        ASSERT_SAME_TYPE(char*,         decltype(strncpy(cp, cpc, s)));
+        ASSERT_SAME_TYPE(char*,         decltype(strcat(cp, cpc)));
+        ASSERT_SAME_TYPE(char*,         decltype(strncat(cp, cpc, s)));
+        ASSERT_SAME_TYPE(int,           decltype(memcmp(vpc, vpc, s)));
+        ASSERT_SAME_TYPE(int,           decltype(strcmp(cpc, cpc)));
+        ASSERT_SAME_TYPE(int,           decltype(strncmp(cpc, cpc, s)));
+        ASSERT_SAME_TYPE(int,           decltype(strcoll(cpc, cpc)));
+        ASSERT_SAME_TYPE(size_t,        decltype(strxfrm(cp, cpc, s)));
+        ASSERT_SAME_TYPE(size_t,        decltype(strcspn(cpc, cpc)));
+        ASSERT_SAME_TYPE(size_t,        decltype(strspn(cpc, cpc)));
+        ASSERT_SAME_TYPE(char*,         decltype(strtok(cp, cpc)));
+        ASSERT_SAME_TYPE(void*,         decltype(memset(vp, 0, s)));
+        ASSERT_SAME_TYPE(char*,         decltype(strerror(0)));
+        ASSERT_SAME_TYPE(size_t,        decltype(strlen(cpc)));
+    }
+
+    // Functions we (may) reimplement
+    {
+        // const char* strchr(const char*, int)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(strchr(s, 'l')));
+        const char* res = strchr(s, 'l');
+        assert(res == &s[2]);
+    }
+    {
+        // char* strchr(char*, int)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(strchr(s, 'l')));
+        char* res = strchr(s, 'l');
+        assert(res == &s[2]);
+    }
+
+    {
+        // const char* strpbrk(const char*, const char*)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(strpbrk(s, "el")));
+        const char* res = strpbrk(s, "el");
+        assert(res == &s[1]);
+    }
+    {
+        // char* strpbrk(char*, const char*)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(strpbrk(s, "el")));
+        char* res = strpbrk(s, "el");
+        assert(res == &s[1]);
+    }
+
+    {
+        // const char* strrchr(const char*, int)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(strrchr(s, 'l')));
+        const char* res = strrchr(s, 'l');
+        assert(res == &s[9]);
+    }
+    {
+        // char* strrchr(char*, int)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(strrchr(s, 'l')));
+        char* res = strrchr(s, 'l');
+        assert(res == &s[9]);
+    }
+
+    {
+        // const void* memchr(const void*, int, size_t)
+        char storage[] = "hello world";
+        size_t count = 11;
+        const void* s = storage;
+        ASSERT_SAME_TYPE(const void*, decltype(memchr(s, 'l', count)));
+        const void* res = memchr(s, 'l', count);
+        assert(res == &storage[2]);
+    }
+    {
+        // void* memchr(void*, int, size_t)
+        char storage[] = "hello world";
+        size_t count = 11;
+        void* s = storage;
+        ASSERT_SAME_TYPE(void*, decltype(memchr(s, 'l', count)));
+        void* res = memchr(s, 'l', count);
+        assert(res == &storage[2]);
+    }
+
+    {
+        // const char* strstr(const char*, const char*)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(strstr(s, "wor")));
+        const char* res = strstr(s, "wor");
+        assert(res == &storage[6]);
+    }
+    {
+        // char* strstr(char*, const char*)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(strstr(s, "wor")));
+        char* res = strstr(s, "wor");
+        assert(res == &storage[6]);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/tgmath_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/tgmath_h.pass.cpp
new file mode 100644
index 0000000..88e42fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/tgmath_h.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tgmath.h>
+
+#include <tgmath.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::complex<double> cd;
+    (void)cd;
+    double x = sin(1.0);
+    (void)x; // to placate scan-build
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/time_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/time_h.pass.cpp
new file mode 100644
index 0000000..31aff19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/time_h.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <time.h>
+
+#include <time.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef CLOCKS_PER_SEC
+#error CLOCKS_PER_SEC not defined
+#endif
+
+int main(int, char**)
+{
+    clock_t c = 0; ((void)c);
+    size_t s = 0;
+    time_t t = 0;
+    tm tmv = {};
+    static_assert((std::is_same<decltype(clock()), clock_t>::value), "");
+    static_assert((std::is_same<decltype(difftime(t,t)), double>::value), "");
+    static_assert((std::is_same<decltype(mktime(&tmv)), time_t>::value), "");
+    static_assert((std::is_same<decltype(time(&t)), time_t>::value), "");
+    static_assert((std::is_same<decltype(asctime(&tmv)), char*>::value), "");
+    static_assert((std::is_same<decltype(ctime(&t)), char*>::value), "");
+    static_assert((std::is_same<decltype(gmtime(&t)), tm*>::value), "");
+    static_assert((std::is_same<decltype(localtime(&t)), tm*>::value), "");
+    char* c1 = 0;
+    const char* c2 = 0;
+    static_assert((std::is_same<decltype(strftime(c1,s,c2,&tmv)), size_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/uchar_h.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/uchar_h.compile.pass.cpp
new file mode 100644
index 0000000..016e51d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/uchar_h.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Apple platforms don't provide <uchar.h> yet, so these tests fail.
+// XFAIL: target={{.+}}-apple-{{.+}}
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// <uchar.h>
+
+#include <uchar.h>
+
+#include "test_macros.h"
+
+// __STDC_UTF_16__ may or may not be defined by the C standard library
+// __STDC_UTF_32__ may or may not be defined by the C standard library
+
+#if !defined(TEST_HAS_NO_C8RTOMB_MBRTOC8)
+ASSERT_SAME_TYPE(size_t, decltype(mbrtoc8((char8_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
+ASSERT_SAME_TYPE(size_t, decltype(c8rtomb((char*)0, (char8_t)0, (mbstate_t*)0)));
+#endif
+
+ASSERT_SAME_TYPE(size_t, decltype(mbrtoc16((char16_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
+ASSERT_SAME_TYPE(size_t, decltype(c16rtomb((char*)0, (char16_t)0, (mbstate_t*)0)));
+
+ASSERT_SAME_TYPE(size_t, decltype(mbrtoc32((char32_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
+ASSERT_SAME_TYPE(size_t, decltype(c16rtomb((char*)0, (char32_t)0, (mbstate_t*)0)));
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/wchar_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/wchar_h.pass.cpp
new file mode 100644
index 0000000..78716da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/wchar_h.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// <wchar.h>
+
+#include <wchar.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef WCHAR_MAX
+#error WCHAR_MAX not defined
+#endif
+
+#ifndef WCHAR_MIN
+#error WCHAR_MIN not defined
+#endif
+
+#ifndef WEOF
+#error WEOF not defined
+#endif
+
+int main(int, char**)
+{
+// mbstate_t comes from the underlying C library; it is defined (in C99) as:
+//    a complete object type other than an array type that can hold the conversion
+//    state information necessary to convert between sequences of multibyte
+//    characters and wide characters
+    mbstate_t mb = {};
+    size_t s = 0;
+    tm *tm = 0;
+    wint_t w = 0;
+    ::FILE* fp = 0;
+    ::va_list va;
+    char* ns = 0;
+    wchar_t* ws = 0;
+    const wchar_t* cws = 0;
+    wchar_t** wsp = 0;
+    ((void)mb); // Prevent unused warning
+    ((void)s); // Prevent unused warning
+    ((void)tm); // Prevent unused warning
+    ((void)w); // Prevent unused warning
+    ((void)fp); // Prevent unused warning
+    ((void)va); // Prevent unused warning
+    ((void)ns); // Prevent unused warning
+    ((void)ws); // Prevent unused warning
+    ((void)cws); // Prevent unused warning
+    ((void)wsp); // Prevent unused warning
+    ASSERT_SAME_TYPE(int,                decltype(fwprintf(fp, L"")));
+    ASSERT_SAME_TYPE(int,                decltype(fwscanf(fp, L"")));
+    ASSERT_SAME_TYPE(int,                decltype(swprintf(ws, s, L"")));
+    ASSERT_SAME_TYPE(int,                decltype(swscanf(L"", L"")));
+    ASSERT_SAME_TYPE(int,                decltype(vfwprintf(fp, L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(vfwscanf(fp, L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(vswprintf(ws, s, L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(vswscanf(L"", L"", va)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(fgetwc(fp)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(fgetws(ws, 0, fp)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(fputwc(L' ', fp)));
+    ASSERT_SAME_TYPE(int,                decltype(fputws(L"", fp)));
+    ASSERT_SAME_TYPE(int,                decltype(fwide(fp, 0)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(getwc(fp)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(putwc(L' ', fp)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(ungetwc(L' ', fp)));
+    ASSERT_SAME_TYPE(double,             decltype(wcstod(L"", wsp)));
+    ASSERT_SAME_TYPE(float,              decltype(wcstof(L"", wsp)));
+    ASSERT_SAME_TYPE(long double,        decltype(wcstold(L"", wsp)));
+    ASSERT_SAME_TYPE(long,               decltype(wcstol(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(long long,          decltype(wcstoll(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(unsigned long,      decltype(wcstoul(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(unsigned long long, decltype(wcstoull(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcscpy(ws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcsncpy(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcscat(ws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcsncat(ws, L"", s)));
+    ASSERT_SAME_TYPE(int,                decltype(wcscmp(L"", L"")));
+    ASSERT_SAME_TYPE(int,                decltype(wcscoll(L"", L"")));
+    ASSERT_SAME_TYPE(int,                decltype(wcsncmp(L"", L"", s)));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcsxfrm(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcschr(ws, L' ')));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(wcschr(cws, L' ')));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcscspn(L"", L"")));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcslen(L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcspbrk(ws, L"")));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(wcspbrk(cws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcsrchr(ws, L' ')));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(wcsrchr(cws, L' ')));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcsspn(L"", L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcsstr(ws, L"")));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(wcsstr(cws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wcstok(ws, L"", wsp)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wmemchr(ws, L' ', s)));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(wmemchr(cws, L' ', s)));
+    ASSERT_SAME_TYPE(int,                decltype(wmemcmp(L"", L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wmemcpy(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wmemmove(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(wmemset(ws, L' ', s)));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcsftime(ws, s, L"", tm)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(btowc(0)));
+    ASSERT_SAME_TYPE(int,                decltype(wctob(w)));
+    ASSERT_SAME_TYPE(int,                decltype(mbsinit(&mb)));
+    ASSERT_SAME_TYPE(size_t,             decltype(mbrlen("", s, &mb)));
+    ASSERT_SAME_TYPE(size_t,             decltype(mbrtowc(ws, "", s, &mb)));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcrtomb(ns, L' ', &mb)));
+    ASSERT_SAME_TYPE(size_t,             decltype(mbsrtowcs(ws, (const char**)0, s, &mb)));
+    ASSERT_SAME_TYPE(size_t,             decltype(wcsrtombs(ns, (const wchar_t**)0, s, &mb)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(getwchar()));
+    ASSERT_SAME_TYPE(int,                decltype(vwscanf(L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(wscanf(L"")));
+    ASSERT_SAME_TYPE(wint_t,             decltype(putwchar(L' ')));
+    ASSERT_SAME_TYPE(int,                decltype(vwprintf(L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(wprintf(L"")));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/wctype_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/wctype_h.pass.cpp
new file mode 100644
index 0000000..c40623a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.c.headers/wctype_h.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// <wctype.h>
+
+#include <wctype.h>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef WEOF
+#error WEOF not defined
+#endif
+
+#ifdef iswalnum
+#error iswalnum defined
+#endif
+
+#ifdef iswalpha
+#error iswalpha defined
+#endif
+
+#ifdef iswblank
+#error iswblank defined
+#endif
+
+#ifdef iswcntrl
+#error iswcntrl defined
+#endif
+
+#ifdef iswdigit
+#error iswdigit defined
+#endif
+
+#ifdef iswgraph
+#error iswgraph defined
+#endif
+
+#ifdef iswlower
+#error iswlower defined
+#endif
+
+#ifdef iswprint
+#error iswprint defined
+#endif
+
+#ifdef iswpunct
+#error iswpunct defined
+#endif
+
+#ifdef iswspace
+#error iswspace defined
+#endif
+
+#ifdef iswupper
+#error iswupper defined
+#endif
+
+#ifdef iswxdigit
+#error iswxdigit defined
+#endif
+
+#ifdef iswctype
+#error iswctype defined
+#endif
+
+#ifdef wctype
+#error wctype defined
+#endif
+
+#ifdef towlower
+#error towlower defined
+#endif
+
+#ifdef towupper
+#error towupper defined
+#endif
+
+#ifdef towctrans
+#error towctrans defined
+#endif
+
+#ifdef wctrans
+#error wctrans defined
+#endif
+
+int main(int, char**)
+{
+    wint_t w = 0;
+    wctrans_t wctr = 0;
+    wctype_t wct = 0;
+    static_assert((std::is_same<decltype(iswalnum(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswalpha(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswblank(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswcntrl(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswdigit(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswgraph(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswlower(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswprint(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswpunct(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswspace(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswupper(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswxdigit(w)), int>::value), "");
+    static_assert((std::is_same<decltype(iswctype(w, wct)), int>::value), "");
+    static_assert((std::is_same<decltype(wctype("")), wctype_t>::value), "");
+    static_assert((std::is_same<decltype(towlower(w)), wint_t>::value), "");
+    static_assert((std::is_same<decltype(towupper(w)), wint_t>::value), "");
+    static_assert((std::is_same<decltype(towctrans(w, wctr)), wint_t>::value), "");
+    static_assert((std::is_same<decltype(wctrans("")), wctrans_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_binary_function.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_binary_function.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..298d059
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_binary_function.cxx1z.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// pointer_to_binary_function
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double binary_f(int i, short j) {return i - j + .75;}
+
+int main(int, char**)
+{
+    typedef std::pointer_to_binary_function<int, short, double> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_binary_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_binary_function.pass.cpp
new file mode 100644
index 0000000..2faf6f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_binary_function.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// pointer_to_binary_function
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double binary_f(int i, short j) {return i - j + .75;}
+
+int main(int, char**)
+{
+    typedef std::pointer_to_binary_function<int, short, double> F;
+    static_assert((std::is_base_of<std::binary_function<int, short, double>, F>::value), "");
+    const F f(binary_f);
+    assert(f(36, 27) == 9.75);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_unary_function.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_unary_function.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..dedc7f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_unary_function.cxx1z.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// pointer_to_unary_function
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double unary_f(int i) {return 0.5 - i;}
+
+int main(int, char**)
+{
+    typedef std::pointer_to_unary_function<int, double> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_unary_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_unary_function.pass.cpp
new file mode 100644
index 0000000..0b6b32b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/pointer_to_unary_function.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// pointer_to_unary_function
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double unary_f(int i) {return 0.5 - i;}
+
+int main(int, char**)
+{
+    typedef std::pointer_to_unary_function<int, double> F;
+    static_assert((std::is_base_of<std::unary_function<int, double>, F>::value), "");
+    const F f(unary_f);
+    assert(f(36) == -35.5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun1.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun1.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..e6e8265
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun1.cxx1z.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <CopyConstructible Arg, Returnable Result>
+// pointer_to_unary_function<Arg, Result>
+// ptr_fun(Result (*f)(Arg));
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double unary_f(int i) {return 0.5 - i;}
+
+int main(int, char**)
+{
+    assert(std::ptr_fun(unary_f)(36) == -35.5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun1.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun1.pass.cpp
new file mode 100644
index 0000000..78fe365
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun1.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <CopyConstructible Arg, Returnable Result>
+// pointer_to_unary_function<Arg, Result>
+// ptr_fun(Result (*f)(Arg));
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double unary_f(int i) {return 0.5 - i;}
+
+int main(int, char**)
+{
+    assert(std::ptr_fun(unary_f)(36) == -35.5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun2.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun2.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..155f2ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun2.cxx1z.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <CopyConstructible Arg1, CopyConstructible Arg2, Returnable Result>
+// pointer_to_binary_function<Arg1,Arg2,Result>
+// ptr_fun(Result (*f)(Arg1, Arg2));
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double binary_f(int i, short j) {return i - j + .75;}
+
+int main(int, char**)
+{
+    assert(std::ptr_fun(binary_f)(36, 27) == 9.75);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun2.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun2.pass.cpp
new file mode 100644
index 0000000..80285fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.function.pointer.adaptors/ptr_fun2.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <CopyConstructible Arg1, CopyConstructible Arg2, Returnable Result>
+// pointer_to_binary_function<Arg1,Arg2,Result>
+// ptr_fun(Result (*f)(Arg1, Arg2));
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+double binary_f(int i, short j) {return i - j + .75;}
+
+int main(int, char**)
+{
+    assert(std::ptr_fun(binary_f)(36, 27) == 9.75);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..ef8dc40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<cReturnable S, ClassType T>
+//   const_mem_fun_t<S,T>
+//   mem_fun(S (T::*f)() const);
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun(&A::a3)(&a) == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun.pass.cpp
new file mode 100644
index 0000000..8746f59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<cReturnable S, ClassType T>
+//   const_mem_fun_t<S,T>
+//   mem_fun(S (T::*f)() const);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun(&A::a3)(&a) == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..58df539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   const_mem_fun1_t<S,T,A>
+//   mem_fun(S (T::*f)(A) const);
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun(&A::a4)(&a, 6) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1.pass.cpp
new file mode 100644
index 0000000..d888fc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   const_mem_fun1_t<S,T,A>
+//   mem_fun(S (T::*f)(A) const);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun(&A::a4)(&a, 6) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_ref_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_ref_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..114acbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_ref_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun1_ref_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun1_ref_t<double, A, unsigned> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_ref_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_ref_t.pass.cpp
new file mode 100644
index 0000000..ae31126
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_ref_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun1_ref_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun1_ref_t<double, A, unsigned> F;
+    static_assert((std::is_base_of<std::binary_function<A, unsigned, double>, F>::value), "");
+    const F f(&A::a4);
+    const A a = A();
+    assert(f(a, 6) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..7e875c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun1_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun1_t<double, A, unsigned> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_t.pass.cpp
new file mode 100644
index 0000000..60c00ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun1_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun1_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun1_t<double, A, unsigned> F;
+    static_assert((std::is_base_of<std::binary_function<const A*, unsigned, double>, F>::value), "");
+    const F f(&A::a4);
+    const A a = A();
+    assert(f(&a, 6) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..061b484
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T>
+//   const_mem_fun_ref_t<S,T>
+//   mem_fun_ref(S (T::*f)() const);
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun_ref(&A::a3)(a) == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref.pass.cpp
new file mode 100644
index 0000000..ece3eca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T>
+//   const_mem_fun_ref_t<S,T>
+//   mem_fun_ref(S (T::*f)() const);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun_ref(&A::a3)(a) == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref1.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref1.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..7257dcf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref1.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   const_mem_fun1_ref_t<S,T,A>
+//   mem_fun_ref(S (T::*f)(A) const);
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun_ref(&A::a4)(a, 6) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref1.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref1.pass.cpp
new file mode 100644
index 0000000..d27f38e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref1.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   const_mem_fun1_ref_t<S,T,A>
+//   mem_fun_ref(S (T::*f)(A) const);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    const A a = A();
+    assert(std::mem_fun_ref(&A::a4)(a, 6) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..3838af9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun_ref_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun_ref_t<int, A> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref_t.pass.cpp
new file mode 100644
index 0000000..6830a07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_ref_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun_ref_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun_ref_t<int, A> F;
+    static_assert((std::is_base_of<std::unary_function<A, int>, F>::value), "");
+    const F f(&A::a3);
+    const A a = A();
+    assert(f(a) == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..107528f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun_t<int, A> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_t.pass.cpp
new file mode 100644
index 0000000..7b5842e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/const_mem_fun_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// const_mem_fun_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::const_mem_fun_t<int, A> F;
+    static_assert((std::is_base_of<std::unary_function<const A*, int>, F>::value), "");
+    const F f(&A::a3);
+    const A a = A();
+    assert(f(&a) == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..c72c29f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T>
+//   mem_fun_t<S,T>
+//   mem_fun(S (T::*f)());
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun(&A::a1)(&a) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun.pass.cpp
new file mode 100644
index 0000000..987cd36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T>
+//   mem_fun_t<S,T>
+//   mem_fun(S (T::*f)());
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun(&A::a1)(&a) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..2d6fe13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   mem_fun1_t<S,T,A>
+//   mem_fun(S (T::*f)(A));
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun(&A::a2)(&a, 5) == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1.pass.cpp
new file mode 100644
index 0000000..5cdb204
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   mem_fun1_t<S,T,A>
+//   mem_fun(S (T::*f)(A));
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun(&A::a2)(&a, 5) == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_ref_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_ref_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..fe633f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_ref_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun1_ref_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun1_ref_t<short, A, int> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_ref_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_ref_t.pass.cpp
new file mode 100644
index 0000000..915ce5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_ref_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun1_ref_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun1_ref_t<short, A, int> F;
+    static_assert((std::is_base_of<std::binary_function<A, int, short>, F>::value), "");
+    const F f(&A::a2);
+    A a;
+    assert(f(a, 5) == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..61d38e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun1_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun1_t<short, A, int> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_t.pass.cpp
new file mode 100644
index 0000000..e36ecec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun1_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun1_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun1_t<short, A, int> F;
+    static_assert((std::is_base_of<std::binary_function<A*, int, short>, F>::value), "");
+    const F f(&A::a2);
+    A a;
+    assert(f(&a, 5) == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..fd69470
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T>
+//   mem_fun_ref_t<S,T>
+//   mem_fun_ref(S (T::*f)());
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun_ref(&A::a1)(a) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref.pass.cpp
new file mode 100644
index 0000000..f989cd0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T>
+//   mem_fun_ref_t<S,T>
+//   mem_fun_ref(S (T::*f)());
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun_ref(&A::a1)(a) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref1.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref1.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..c4ac53c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref1.cxx1z.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   mem_fun1_ref_t<S,T,A>
+//   mem_fun_ref(S (T::*f)(A));
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun_ref(&A::a2)(a, 5) == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref1.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref1.pass.cpp
new file mode 100644
index 0000000..b254239
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref1.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable S, ClassType T, CopyConstructible A>
+//   mem_fun1_ref_t<S,T,A>
+//   mem_fun_ref(S (T::*f)(A));
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    A a;
+    assert(std::mem_fun_ref(&A::a2)(a, 5) == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..b87821e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun_ref_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun_ref_t<char, A> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref_t.pass.cpp
new file mode 100644
index 0000000..645ca9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_ref_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun_ref_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun_ref_t<char, A> F;
+    static_assert((std::is_base_of<std::unary_function<A, char>, F>::value), "");
+    const F f(&A::a1);
+    A a;
+    assert(f(a) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_t.cxx1z.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_t.cxx1z.compile.fail.cpp
new file mode 100644
index 0000000..d7f2be2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_t.cxx1z.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun_t
+// Removed in c++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun_t<char, A> F;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_t.pass.cpp
new file mode 100644
index 0000000..3497bcf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.adaptors/depr.member.pointer.adaptors/mem_fun_t.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// mem_fun_t
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char a1() {return 5;}
+    short a2(int i) {return short(i+1);}
+    int a3() const {return 1;}
+    double a4(unsigned i) const {return i-1;}
+};
+
+int main(int, char**)
+{
+    typedef std::mem_fun_t<char, A> F;
+    static_assert((std::is_base_of<std::unary_function<A*, char>, F>::value), "");
+    const F f(&A::a1);
+    A a;
+    assert(f(&a) == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/binary_function.depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/binary_function.depr.verify.cpp
new file mode 100644
index 0000000..e5cdd91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/binary_function.depr.verify.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++11 || c++14
+// binary_function was removed in C++17
+
+// check that binary_function is marked deprecated
+
+#include <functional>
+
+std::binary_function<int, int, int> b; // expected-warning {{'binary_function<int, int, int>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/binary_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/binary_function.pass.cpp
new file mode 100644
index 0000000..3185de2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/binary_function.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+// binary_function was removed in C++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Arg1, class Arg2, class Result>
+// struct binary_function
+// {
+//     typedef Arg1   first_argument_type;
+//     typedef Arg2   second_argument_type;
+//     typedef Result result_type;
+// };
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::binary_function<int, unsigned, char>::first_argument_type, int>::value), "");
+    static_assert((std::is_same<std::binary_function<int, unsigned, char>::second_argument_type, unsigned>::value), "");
+    static_assert((std::is_same<std::binary_function<int, unsigned, char>::result_type, char>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/unary_function.depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/unary_function.depr.verify.cpp
new file mode 100644
index 0000000..b27f200
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/unary_function.depr.verify.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++11 || c++14
+// unary_function was removed in C++17
+
+// check that unary_function is marked deprecated
+
+#include <functional>
+
+std::unary_function<int, int> u; // expected-warning {{'unary_function<int, int>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/unary_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/unary_function.pass.cpp
new file mode 100644
index 0000000..bcc4a04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.function.objects/depr.base/unary_function.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+// unary_function was removed in C++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Arg, class Result>
+// struct unary_function
+// {
+//     typedef Arg    argument_type;
+//     typedef Result result_type;
+// };
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::unary_function<unsigned, char>::argument_type, unsigned>::value), "");
+    static_assert((std::is_same<std::unary_function<unsigned, char>::result_type, char>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/io_state.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/io_state.pass.cpp
new file mode 100644
index 0000000..37b23fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/io_state.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+//
+// class ios_base
+// {
+// public:
+//     typedef T1 io_state;
+// };
+
+//  These members were removed for C++17
+
+#include "test_macros.h"
+#include <strstream>
+#include <cassert>
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    std::strstream::io_state b = std::strstream::eofbit;
+    assert(b == std::ios::eofbit);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/lit.local.cfg
new file mode 100644
index 0000000..3d9bcf3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/lit.local.cfg
@@ -0,0 +1,2 @@
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/open_mode.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/open_mode.pass.cpp
new file mode 100644
index 0000000..57a88c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/open_mode.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+//
+// class ios_base
+// {
+// public:
+//     typedef T2 open_mode;
+// };
+
+//  These members were removed for C++17
+
+#include "test_macros.h"
+#include <strstream>
+#include <cassert>
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    std::strstream::open_mode b = std::strstream::app;
+    assert(b == std::ios::app);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/seek_dir.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/seek_dir.pass.cpp
new file mode 100644
index 0000000..5b48073
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/seek_dir.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+//
+// class ios_base
+// {
+// public:
+//     typedef T3 seek_dir;
+// };
+
+//  These members were removed for C++17
+
+#include "test_macros.h"
+#include <strstream>
+#include <cassert>
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    std::strstream::seek_dir b = std::strstream::cur;
+    assert(b == std::ios::cur);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/streamoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/streamoff.pass.cpp
new file mode 100644
index 0000000..8abced5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/streamoff.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+//
+// class ios_base
+// {
+// public:
+//     typedef OFF_T streamoff;
+// };
+
+//  These members were removed for C++17
+
+#include "test_macros.h"
+#include <ios>
+#include <type_traits>
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    static_assert((std::is_integral<std::ios_base::streamoff>::value), "");
+    static_assert((std::is_signed<std::ios_base::streamoff>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/streampos.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/streampos.pass.cpp
new file mode 100644
index 0000000..7e95727
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.ios.members/streampos.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+//
+// class ios_base
+// {
+// public:
+//     typedef POS_T streampos;
+// };
+
+//  These members were removed for C++17
+
+#include "test_macros.h"
+#include <ios>
+#include <type_traits>
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<std::ios_base::streampos, std::streampos>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.1st/bind1st.depr_in_cxx11.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.1st/bind1st.depr_in_cxx11.verify.cpp
new file mode 100644
index 0000000..93cfbb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.1st/bind1st.depr_in_cxx11.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// bind1st
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+
+#include <functional>
+
+#include "../test_func.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::bind1st(test_func(1), 5); // expected-warning {{'bind1st<test_func, int>' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.1st/bind1st.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.1st/bind1st.pass.cpp
new file mode 100644
index 0000000..39a0b17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.1st/bind1st.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class Fn, class T>
+//   binder1st<Fn>
+//   bind1st(const Fn& fn, const T& x);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../test_func.h"
+
+int main(int, char**)
+{
+    assert(std::bind1st(test_func(1), 5)(10.) == -5.);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.2nd/bind2nd.depr_in_cxx11.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.2nd/bind2nd.depr_in_cxx11.verify.cpp
new file mode 100644
index 0000000..3e55db6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.2nd/bind2nd.depr_in_cxx11.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// bind2nd
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+
+#include <functional>
+
+#include "../test_func.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::bind2nd(test_func(1), 5); // expected-warning {{'bind2nd<test_func, int>' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.2nd/bind2nd.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.2nd/bind2nd.pass.cpp
new file mode 100644
index 0000000..b7cfd60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.bind.2nd/bind2nd.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class Fn, class T>
+//   binder2nd<Fn>
+//   bind2nd(const Fn& op, const T& x);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../test_func.h"
+
+int main(int, char**)
+{
+    assert(std::bind2nd(test_func(1), 5)(10) == 5.);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.1st/binder1st.depr_in_cxx11.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.1st/binder1st.depr_in_cxx11.verify.cpp
new file mode 100644
index 0000000..5048d7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.1st/binder1st.depr_in_cxx11.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// binder1st
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+
+#include <functional>
+
+#include "../test_func.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::binder1st<test_func> B1ST; // expected-warning {{'binder1st<test_func>' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.1st/binder1st.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.1st/binder1st.pass.cpp
new file mode 100644
index 0000000..2f4ce6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.1st/binder1st.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class Fn>
+// class binder1st
+//   : public unary_function<typename Fn::second_argument_type, typename Fn::result_type>
+// {
+// protected:
+//   Fn op;
+//   typename Fn::first_argument_type value;
+// public:
+//   binder2nd(const Fn& x, const typename Fn::second_argument_type& y);
+//
+//   typename Fn::result_type operator()(const typename Fn::first_argument_type& x) const;
+//   typename Fn::result_type operator()(typename Fn::first_argument_type& x) const;
+// };
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../test_func.h"
+
+class test
+    : public std::binder1st<test_func>
+{
+    typedef std::binder1st<test_func> base;
+public:
+    test() : std::binder1st<test_func>(test_func(2), 30) {}
+
+    void do_test()
+    {
+        static_assert((std::is_base_of<
+                         std::unary_function<test_func::second_argument_type,
+                                             test_func::result_type>,
+                         test>::value), "");
+        assert(op.id() == 2);
+        assert(value == 30);
+
+        double d = 5;
+        assert((*this)(d) == 35);
+        assert((*this)(5) == 25);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    t.do_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.2nd/binder2nd.depr_in_cxx11.verify.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.2nd/binder2nd.depr_in_cxx11.verify.cpp
new file mode 100644
index 0000000..5a883ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.2nd/binder2nd.depr_in_cxx11.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// binder2nd
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS
+
+#include <functional>
+
+#include "../test_func.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::binder2nd<test_func> B2ND; // expected-warning {{'binder2nd<test_func>' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.2nd/binder2nd.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.2nd/binder2nd.pass.cpp
new file mode 100644
index 0000000..c4c65ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/depr.lib.binder.2nd/binder2nd.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class Fn>
+// class binder2nd
+//   : public unary_function<typename Fn::first_argument_type, typename Fn::result_type>
+// {
+// protected:
+//   Fn op;
+//   typename Fn::second_argument_type value;
+// public:
+//   binder2nd(const Fn& x, const typename Fn::second_argument_type& y);
+//
+//   typename Fn::result_type operator()(const typename Fn::first_argument_type& x) const;
+//   typename Fn::result_type operator()(typename Fn::first_argument_type& x) const;
+// };
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../test_func.h"
+
+class test
+    : public std::binder2nd<test_func>
+{
+    typedef std::binder2nd<test_func> base;
+public:
+    test() : std::binder2nd<test_func>(test_func(3), 4.5) {}
+
+    void do_test()
+    {
+        static_assert((std::is_base_of<
+                         std::unary_function<test_func::first_argument_type,
+                                             test_func::result_type>,
+                         test>::value), "");
+        assert(op.id() == 3);
+        assert(value == 4.5);
+
+        int i = 5;
+        assert((*this)(i) == 22.5);
+        assert((*this)(5) == 0.5);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    t.do_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/test_func.h b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/test_func.h
new file mode 100644
index 0000000..a187eb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.lib.binders/test_func.h
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_FUNC_H
+#define TEST_FUNC_H
+
+class test_func
+{
+    int id_;
+public:
+    typedef int first_argument_type;
+    typedef double second_argument_type;
+    typedef long double result_type;
+
+    explicit test_func(int id) : id_(id) {}
+
+    int id() const {return id_;}
+
+    result_type operator() (const first_argument_type& x, second_argument_type& y) const
+        {return x+y;}
+    result_type operator() (const first_argument_type& x, const second_argument_type& y) const
+        {return x-y;}
+    result_type operator() (first_argument_type& x, const second_argument_type& y) const
+        {return x*y;}
+};
+
+#endif // TEST_FUNC_H
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp.pass.cpp
new file mode 100644
index 0000000..9823361
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+
+// explicit istrstream(const char* s);
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const char buf[] = "123 4.5 dog";
+        std::istrstream in(buf);
+        int i;
+        in >> i;
+        assert(i == 123);
+        double d;
+        in >> d;
+        assert(d == 4.5);
+        std::string s;
+        in >> s;
+        assert(s == "dog");
+        assert(in.eof());
+        assert(!in.fail());
+        in.clear();
+        in.putback('g');
+        assert(!in.fail());
+        in.putback('g');
+        assert(in.fail());
+        assert(buf[9] == 'o');
+        assert(buf[10] == 'g');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp_size.pass.cpp
new file mode 100644
index 0000000..0808f45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/ccp_size.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+
+// explicit istrstream(const char* s, streamsize n);
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const char buf[] = "123 4.5 dog";
+        std::istrstream in(buf, 7);
+        int i;
+        in >> i;
+        assert(i == 123);
+        double d;
+        in >> d;
+        assert(d == 4.5);
+        std::string s;
+        in >> s;
+        assert(s == "");
+        assert(in.eof());
+        assert(in.fail());
+        in.clear();
+        in.putback('5');
+        assert(!in.fail());
+        in.putback('5');
+        assert(in.fail());
+        assert(buf[5] == '.');
+        assert(buf[6] == '5');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/cp.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/cp.pass.cpp
new file mode 100644
index 0000000..681d7b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/cp.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+
+// explicit istrstream(char* s);
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "123 4.5 dog";
+        std::istrstream in(buf);
+        int i;
+        in >> i;
+        assert(i == 123);
+        double d;
+        in >> d;
+        assert(d == 4.5);
+        std::string s;
+        in >> s;
+        assert(s == "dog");
+        assert(in.eof());
+        assert(!in.fail());
+        in.clear();
+        in.putback('g');
+        assert(!in.fail());
+        in.putback('g');
+        assert(!in.fail());
+        assert(buf[9] == 'g');
+        assert(buf[10] == 'g');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/cp_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/cp_size.pass.cpp
new file mode 100644
index 0000000..96f17b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.cons/cp_size.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+
+// explicit istrstream(char* s, streamsize n);
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "123 4.5 dog";
+        std::istrstream in(buf, 7);
+        int i;
+        in >> i;
+        assert(i == 123);
+        double d;
+        in >> d;
+        assert(d == 4.5);
+        std::string s;
+        in >> s;
+        assert(s == "");
+        assert(in.eof());
+        assert(in.fail());
+        in.clear();
+        in.putback('5');
+        assert(!in.fail());
+        in.putback('5');
+        assert(!in.fail());
+        assert(buf[5] == '5');
+        assert(buf[6] == '5');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.members/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.members/rdbuf.pass.cpp
new file mode 100644
index 0000000..8040126
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.members/rdbuf.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+
+// strstreambuf* rdbuf() const;
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const char buf[] = "123 4.5 dog";
+        const std::istrstream in(buf);
+        std::strstreambuf* sb = in.rdbuf();
+        assert(sb->sgetc() == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.members/str.pass.cpp
new file mode 100644
index 0000000..0ee341b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/depr.istrstream.members/str.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+
+// char* str();
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const char buf[] = "123 4.5 dog";
+        std::istrstream in(buf);
+        assert(in.str() == std::string("123 4.5 dog"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/types.pass.cpp
new file mode 100644
index 0000000..93cdbf6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.istrstream/types.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class istrstream
+//     : public basic_istream<char>
+// {
+//     ...
+
+#include <strstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::istream, std::istrstream>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.cons/cp_size_mode.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.cons/cp_size_mode.pass.cpp
new file mode 100644
index 0000000..64a12ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.cons/cp_size_mode.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+
+// ostrstream(char* s, int n, ios_base::openmode mode = ios_base::out);
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "123 4.5 dog";
+        std::ostrstream out(buf, 0);
+        assert(out.str() == std::string("123 4.5 dog"));
+        int i = 321;
+        double d = 5.5;
+        std::string s("cat");
+        out << i << ' ' << d << ' ' << s << std::ends;
+        assert(out.str() == std::string("321 5.5 cat"));
+    }
+    {
+        char buf[23] = "123 4.5 dog";
+        std::ostrstream out(buf, 11, std::ios::app);
+        assert(out.str() == std::string("123 4.5 dog"));
+        int i = 321;
+        double d = 5.5;
+        std::string s("cat");
+        out << i << ' ' << d << ' ' << s << std::ends;
+        assert(out.str() == std::string("123 4.5 dog321 5.5 cat"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.cons/default.pass.cpp
new file mode 100644
index 0000000..6960f75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.cons/default.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+
+// ostrstream();
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ostrstream out;
+    int i = 123;
+    double d = 4.5;
+    std::string s("dog");
+    out << i << ' ' << d << ' ' << s << std::ends;
+    assert(out.str() == std::string("123 4.5 dog"));
+    out.freeze(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/freeze.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/freeze.pass.cpp
new file mode 100644
index 0000000..f52ff6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/freeze.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+
+// void freeze(bool freezefl = true);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostrstream out;
+        out.freeze();
+        assert(!out.fail());
+        out << 'a';
+        assert(out.fail());
+        out.clear();
+        out.freeze(false);
+        out << 'a';
+        out << char(0);
+        assert(out.str() == std::string("a"));
+        out.freeze(false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/pcount.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/pcount.pass.cpp
new file mode 100644
index 0000000..080e050
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/pcount.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+
+// int pcount() const;
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostrstream out;
+        assert(out.pcount() == 0);
+        out << 123 << ' ' << 4.5 << ' ' << "dog";
+        assert(out.pcount() == 11);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/rdbuf.pass.cpp
new file mode 100644
index 0000000..df38ea9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/rdbuf.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+
+// strstreambuf* rdbuf() const;
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "123 4.5 dog";
+        const std::ostrstream out(buf, 0);
+        std::strstreambuf* sb = out.rdbuf();
+        assert(sb->sputc('a') == 'a');
+        assert(buf == std::string("a23 4.5 dog"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/str.pass.cpp
new file mode 100644
index 0000000..5de41cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/depr.ostrstream.members/str.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+
+// char* str();
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostrstream out;
+        out << 123 << ' ' << 4.5 << ' ' << "dog" << std::ends;
+        assert(out.str() == std::string("123 4.5 dog"));
+        out.freeze(false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/types.pass.cpp
new file mode 100644
index 0000000..3e75370
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.ostrstream/types.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class ostrstream
+//     : public basic_ostream<char>
+// {
+//     ...
+
+#include <strstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::ostream, std::ostrstream>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.cons/cp_size_mode.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.cons/cp_size_mode.pass.cpp
new file mode 100644
index 0000000..96c2890
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.cons/cp_size_mode.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+
+// strstream(char* s, int n, ios_base::openmode mode = ios_base::in | ios_base::out);
+
+#include <strstream>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "123 4.5 dog";
+        std::strstream inout(buf, 0);
+        assert(inout.str() == std::string("123 4.5 dog"));
+        int i = 321;
+        double d = 5.5;
+        std::string s("cat");
+        inout >> i;
+        assert(inout.fail());
+        inout.clear();
+        inout << i << ' ' << d << ' ' << s;
+        assert(inout.str() == std::string("321 5.5 cat"));
+        i = 0;
+        d = 0;
+        s = "";
+        inout >> i >> d >> s;
+        assert(i == 321);
+        assert(d == 5.5);
+        assert(s == "cat");
+    }
+    {
+        char buf[23] = "123 4.5 dog";
+        std::strstream inout(buf, 11, std::ios::app);
+        assert(inout.str() == std::string("123 4.5 dog"));
+        int i = 0;
+        double d = 0;
+        std::string s;
+        inout >> i >> d >> s;
+        assert(i == 123);
+        assert(d == 4.5);
+        assert(s == "dog");
+        i = 321;
+        d = 5.5;
+        s = "cat";
+        inout.clear();
+        inout << i << ' ' << d << ' ' << s;
+        assert(inout.str() == std::string("123 4.5 dog321 5.5 cat"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.cons/default.pass.cpp
new file mode 100644
index 0000000..907985b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.cons/default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+
+// strstream();
+
+#include <strstream>
+#include <cassert>
+#include <cstring>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::strstream inout;
+    int i = 123;
+    double d = 4.5;
+    std::string s("dog");
+    inout << i << ' ' << d << ' ' << s << std::ends;
+    assert(inout.str() == std::string("123 4.5 dog"));
+    i = 0;
+    d = 0;
+    s = "";
+    inout >> i >> d >> s;
+    assert(i == 123);
+    assert(d == 4.5);
+    assert(std::strcmp(s.c_str(), "dog") == 0);
+    inout.freeze(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.dest/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.dest/rdbuf.pass.cpp
new file mode 100644
index 0000000..210e730
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.dest/rdbuf.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+
+// strstreambuf* rdbuf() const;
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "123 4.5 dog";
+        const std::strstream out(buf, 0);
+        std::strstreambuf* sb = out.rdbuf();
+        assert(sb->sputc('a') == 'a');
+        assert(buf == std::string("a23 4.5 dog"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/freeze.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/freeze.pass.cpp
new file mode 100644
index 0000000..f5de291
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/freeze.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+
+// void freeze(bool freezefl = true);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::strstream out;
+        out.freeze();
+        assert(!out.fail());
+        out << 'a';
+        assert(out.fail());
+        out.clear();
+        out.freeze(false);
+        out << 'a';
+        out << char(0);
+        assert(out.str() == std::string("a"));
+        out.freeze(false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/pcount.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/pcount.pass.cpp
new file mode 100644
index 0000000..abf928f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/pcount.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+
+// int pcount() const;
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::strstream out;
+        assert(out.pcount() == 0);
+        out << 123 << ' ' << 4.5 << ' ' << "dog";
+        assert(out.pcount() == 11);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/str.pass.cpp
new file mode 100644
index 0000000..59ee909
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/depr.strstream.oper/str.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+
+// char* str();
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::strstream out;
+        out << 123 << ' ' << 4.5 << ' ' << "dog" << std::ends;
+        assert(out.str() == std::string("123 4.5 dog"));
+        out.freeze(false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/types.pass.cpp
new file mode 100644
index 0000000..3e97053
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstream/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstream
+//     : public basic_iostream<char>
+// {
+// public:
+//     // Types
+//     typedef char                        char_type;
+//     typedef char_traits<char>::int_type int_type;
+//     typedef char_traits<char>::pos_type pos_type;
+//     typedef char_traits<char>::off_type off_type;
+
+#include <strstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::iostream, std::strstream>::value), "");
+    static_assert((std::is_same<std::strstream::char_type, char>::value), "");
+    static_assert((std::is_same<std::strstream::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::strstream::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::strstream::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/ccp_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/ccp_size.pass.cpp
new file mode 100644
index 0000000..57969fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/ccp_size.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(const char* gnext_arg, streamsize n);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf));
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == 0);
+        assert(sb.snextc() == EOF);
+    }
+    {
+        const char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cp_size_cp.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cp_size_cp.pass.cpp
new file mode 100644
index 0000000..4fe7160
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cp_size_cp.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(char* gnext_arg, streamsize n, char* pbeg_arg = 0);
+
+#include <strstream>
+#include <cassert>
+#include <cstring>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf));
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == 0);
+        assert(sb.snextc() == EOF);
+    }
+    {
+        char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf), buf);
+        assert(sb.sgetc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == 'i');
+        assert(sb.sputc('j') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == 'i');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0, buf);
+        assert(sb.sgetc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        char buf[10] = "abcd";
+        std::size_t s = std::strlen(buf);
+        std::strstreambuf sb(buf, sizeof(buf) - s, buf + s);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == 'i');
+        assert(sb.sputc('j') == 'j');
+        assert(sb.sputc('j') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == 'i');
+        assert(sb.snextc() == 'j');
+        assert(sb.snextc() == EOF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cscp_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cscp_size.pass.cpp
new file mode 100644
index 0000000..001151c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cscp_size.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(const signed char* gnext_arg, streamsize n);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const signed char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf));
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == 0);
+        assert(sb.snextc() == EOF);
+    }
+    {
+        const signed char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cucp_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cucp_size.pass.cpp
new file mode 100644
index 0000000..b4efb11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/cucp_size.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(const unsigned char* gnext_arg, streamsize n);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        unsigned char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf));
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == 0);
+        assert(sb.snextc() == EOF);
+    }
+    {
+        unsigned char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/custom_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/custom_alloc.pass.cpp
new file mode 100644
index 0000000..025bc0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/custom_alloc.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*));
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int called = 0;
+
+void* my_alloc(std::size_t)
+{
+    static char buf[10000];
+    ++called;
+    return buf;
+}
+
+void my_free(void*)
+{
+    ++called;
+}
+
+struct test
+    : std::strstreambuf
+{
+    test(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*))
+        : std::strstreambuf(palloc_arg, pfree_arg) {}
+    virtual int_type overflow(int_type c)
+        {return std::strstreambuf::overflow(c);}
+};
+
+int main(int, char**)
+{
+    {
+        test s(my_alloc, my_free);
+        assert(called == 0);
+        s.overflow('a');
+        assert(called == 1);
+    }
+    assert(called == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/default.pass.cpp
new file mode 100644
index 0000000..844f31e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/default.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// explicit strstreambuf(streamsize alsize_arg = 0); // before C++20
+// strstreambuf() : strstreambuf(0) {}               // C++20
+// explicit strstreambuf(streamsize alsize_arg);     // C++20
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    {
+        std::strstreambuf s;
+        assert(s.str() == nullptr);
+        assert(s.pcount() == 0);
+    }
+    {
+        std::strstreambuf s(1024);
+        LIBCPP_ASSERT(s.str() == nullptr);
+        assert(s.pcount() == 0);
+    }
+
+#if TEST_STD_VER >= 11
+    {
+      typedef std::strstreambuf B;
+      static_assert(test_convertible<B>(), "");
+      static_assert(!test_convertible<B, std::streamsize>(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/scp_size_scp.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/scp_size_scp.pass.cpp
new file mode 100644
index 0000000..afe3407
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/scp_size_scp.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(signed char* gnext_arg, streamsize n, signed char* pbeg_arg = 0);
+
+#include <strstream>
+#include <cassert>
+#include <cstring>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        signed char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf));
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == 0);
+        assert(sb.snextc() == EOF);
+    }
+    {
+        signed char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        signed char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf), buf);
+        assert(sb.sgetc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == 'i');
+        assert(sb.sputc('j') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == 'i');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        signed char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0, buf);
+        assert(sb.sgetc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        signed char buf[10] = "abcd";
+        std::size_t s = std::strlen((char*)buf);
+        std::strstreambuf sb(buf, sizeof(buf) - s, buf + s);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == 'i');
+        assert(sb.sputc('j') == 'j');
+        assert(sb.sputc('j') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == 'i');
+        assert(sb.snextc() == 'j');
+        assert(sb.snextc() == EOF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/ucp_size_ucp.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/ucp_size_ucp.pass.cpp
new file mode 100644
index 0000000..e7b8d6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.cons/ucp_size_ucp.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// strstreambuf(unsigned char* gnext_arg, streamsize n, unsigned char* pbeg_arg = 0);
+
+#include <strstream>
+#include <cassert>
+#include <cstring>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        unsigned char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf));
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == 0);
+        assert(sb.snextc() == EOF);
+    }
+    {
+        unsigned char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        unsigned char buf[] = "abcd";
+        std::strstreambuf sb(buf, sizeof(buf), buf);
+        assert(sb.sgetc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == 'i');
+        assert(sb.sputc('j') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == 'i');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        unsigned char buf[] = "abcd";
+        std::strstreambuf sb(buf, 0, buf);
+        assert(sb.sgetc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == EOF);
+    }
+    {
+        unsigned char buf[10] = "abcd";
+        std::size_t s = std::strlen((char*)buf);
+        std::strstreambuf sb(buf, sizeof(buf) - s, buf + s);
+        assert(sb.sgetc() == 'a');
+        assert(sb.snextc() == 'b');
+        assert(sb.snextc() == 'c');
+        assert(sb.snextc() == 'd');
+        assert(sb.snextc() == EOF);
+        assert(sb.sputc('e') == 'e');
+        assert(sb.sputc('f') == 'f');
+        assert(sb.sputc('g') == 'g');
+        assert(sb.sputc('h') == 'h');
+        assert(sb.sputc('i') == 'i');
+        assert(sb.sputc('j') == 'j');
+        assert(sb.sputc('j') == EOF);
+        assert(sb.sgetc() == 'e');
+        assert(sb.snextc() == 'f');
+        assert(sb.snextc() == 'g');
+        assert(sb.snextc() == 'h');
+        assert(sb.snextc() == 'i');
+        assert(sb.snextc() == 'j');
+        assert(sb.snextc() == EOF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/freeze.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/freeze.pass.cpp
new file mode 100644
index 0000000..54587c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/freeze.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// void freeze(bool freezefl = true);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::strstreambuf sb;
+        sb.freeze(true);
+        assert(sb.sputc('a') == EOF);
+        sb.freeze(false);
+        assert(sb.sputc('a') == 'a');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/overflow.pass.cpp
new file mode 100644
index 0000000..a0a27fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/overflow.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// int overflow(int c);
+
+#include <iostream>
+#include <string>
+#include <strstream>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::ostrstream oss;
+  std::string s;
+
+  for (int i = 0; i < 4096; ++i)
+    s.push_back((i % 16) + 'a');
+
+  oss << s << std::ends;
+  std::cout << oss.str();
+  oss.freeze(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/pcount.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/pcount.pass.cpp
new file mode 100644
index 0000000..1bf17d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/pcount.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// int pcount() const;
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::strstreambuf sb;
+        assert(sb.pcount() == 0);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.pcount() == 1);
+        assert(sb.sputc(0) == 0);
+        assert(sb.pcount() == 2);
+        assert(sb.str() == std::string("a"));
+        assert(sb.pcount() == 2);
+        sb.freeze(false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/str.pass.cpp
new file mode 100644
index 0000000..841334b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.members/str.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// char* str();
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::strstreambuf sb;
+        assert(sb.sputc('a') == 'a');
+        assert(sb.sputc(0) == 0);
+        assert(sb.str() == std::string("a"));
+        sb.freeze(false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/overflow.pass.cpp
new file mode 100644
index 0000000..b2267a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/overflow.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// int_type overflow(int_type c = EOF);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[12] = "abc";
+        std::strstreambuf sb(buf, sizeof(buf), buf);
+        assert(sb.sputc('1') == '1');
+        assert(sb.str() == std::string("1bc"));
+        assert(sb.sputc('2') == '2');
+        assert(sb.str() == std::string("12c"));
+        assert(sb.sputc('3') == '3');
+        assert(sb.str() == std::string("123"));
+        assert(sb.sputc('4') == '4');
+        assert(sb.str() == std::string("1234"));
+        assert(sb.sputc('5') == '5');
+        assert(sb.str() == std::string("12345"));
+        assert(sb.sputc('6') == '6');
+        assert(sb.str() == std::string("123456"));
+        assert(sb.sputc('7') == '7');
+        assert(sb.str() == std::string("1234567"));
+        assert(sb.sputc('8') == '8');
+        assert(sb.str() == std::string("12345678"));
+        assert(sb.sputc('9') == '9');
+        assert(sb.str() == std::string("123456789"));
+        assert(sb.sputc('0') == '0');
+        assert(sb.str() == std::string("1234567890"));
+        assert(sb.sputc('1') == '1');
+        assert(sb.str() == std::string("12345678901"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/pbackfail.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/pbackfail.pass.cpp
new file mode 100644
index 0000000..1f92b20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/pbackfail.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// int_type pbackfail(int_type c = EOF);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct test
+    : public std::strstreambuf
+{
+    typedef std::strstreambuf base;
+    test(char* gnext_arg, std::streamsize n, char* pbeg_arg = 0)
+        : base(gnext_arg, n, pbeg_arg) {}
+    test(const char* gnext_arg, std::streamsize n)
+        : base(gnext_arg, n) {}
+
+    virtual int_type pbackfail(int_type c = EOF) {return base::pbackfail(c);}
+};
+
+int main(int, char**)
+{
+    {
+        const char buf[] = "123";
+        test sb(buf, 0);
+        assert(sb.sgetc() == '1');
+        assert(sb.snextc() == '2');
+        assert(sb.snextc() == '3');
+        assert(sb.sgetc() == '3');
+        assert(sb.snextc() == EOF);
+        assert(sb.pbackfail('3') == '3');
+        assert(sb.pbackfail('3') == EOF);
+        assert(sb.pbackfail('2') == '2');
+        assert(sb.pbackfail(EOF) != EOF);
+        assert(sb.pbackfail(EOF) == EOF);
+        assert(sb.str() == std::string("123"));
+    }
+    {
+        char buf[] = "123";
+        test sb(buf, 0);
+        assert(sb.sgetc() == '1');
+        assert(sb.snextc() == '2');
+        assert(sb.snextc() == '3');
+        assert(sb.sgetc() == '3');
+        assert(sb.snextc() == EOF);
+        assert(sb.pbackfail('3') == '3');
+        assert(sb.pbackfail('3') == '3');
+        assert(sb.pbackfail(EOF) != EOF);
+        assert(sb.pbackfail(EOF) == EOF);
+        assert(sb.str() == std::string("133"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/seekoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/seekoff.pass.cpp
new file mode 100644
index 0000000..94b1346
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/seekoff.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// pos_type seekoff(off_type off, ios_base::seekdir way,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "0123456789";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == '6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+    }
+    {
+        char buf[] = "0123456789";
+        std::strstreambuf sb(buf, 0, buf);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == std::string("012a456789"));
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc('b') == 'b');
+        assert(sb.str() == std::string("012a456b89"));
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == std::string("012a456c89"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/seekpos.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/seekpos.pass.cpp
new file mode 100644
index 0000000..f7e96ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/seekpos.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// pos_type seekpos(pos_type sp,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "0123456789";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.pubseekpos(3, std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+    }
+    {
+        char buf[] = "0123456789";
+        std::strstreambuf sb(buf, 0, buf);
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == std::string("012a456789"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/setbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/setbuf.pass.cpp
new file mode 100644
index 0000000..e663862
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/setbuf.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// streambuf* setbuf(char* s, streamsize n);
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[] = "0123456789";
+        std::strstreambuf sb(buf, 0);
+        assert(sb.pubsetbuf(0, 0) == &sb);
+        assert(sb.str() == std::string("0123456789"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/underflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/underflow.pass.cpp
new file mode 100644
index 0000000..6aa4b43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/depr.strstreambuf.virtuals/underflow.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+
+// int_type underflow();
+
+#include <strstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct test
+    : public std::strstreambuf
+{
+    typedef std::strstreambuf base;
+    test(char* gnext_arg, std::streamsize n, char* pbeg_arg = 0)
+        : base(gnext_arg, n, pbeg_arg) {}
+    test(const char* gnext_arg, std::streamsize n)
+        : base(gnext_arg, n) {}
+
+    base::int_type underflow() {return base::underflow();}
+};
+
+int main(int, char**)
+{
+    {
+        char buf[10] = "123";
+        test sb(buf, 0, buf + 3);
+        assert(sb.underflow() == '1');
+        assert(sb.underflow() == '1');
+        assert(sb.snextc() == '2');
+        assert(sb.underflow() == '2');
+        assert(sb.underflow() == '2');
+        assert(sb.snextc() == '3');
+        assert(sb.underflow() == '3');
+        assert(sb.underflow() == '3');
+        assert(sb.snextc() == EOF);
+        assert(sb.underflow() == EOF);
+        assert(sb.underflow() == EOF);
+        sb.sputc('4');
+        assert(sb.underflow() == '4');
+        assert(sb.underflow() == '4');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/types.pass.cpp
new file mode 100644
index 0000000..bf86406
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/depr.strstreambuf/types.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <strstream>
+
+// class strstreambuf
+//     : public basic_streambuf<char>
+
+#include <strstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::streambuf, std::strstreambuf>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/lit.local.cfg
new file mode 100644
index 0000000..3d9bcf3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/depr.str.strstreams/lit.local.cfg
@@ -0,0 +1,2 @@
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/set.unexpected/get_unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/set.unexpected/get_unexpected.pass.cpp
new file mode 100644
index 0000000..d39b9fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/set.unexpected/get_unexpected.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// test get_unexpected
+
+#include <exception>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+void f3()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+
+    std::unexpected_handler old = std::get_unexpected();
+    // verify there is a previous unexpected handler
+    assert(old);
+    std::set_unexpected(f1);
+    assert(std::get_unexpected() == f1);
+    // verify f1 was replace with f2
+    std::set_unexpected(f2);
+    assert(std::get_unexpected() == f2);
+    // verify calling original unexpected handler calls terminate
+    std::set_terminate(f3);
+    (*old)();
+    assert(0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/set.unexpected/set_unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/set.unexpected/set_unexpected.pass.cpp
new file mode 100644
index 0000000..fce49d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/set.unexpected/set_unexpected.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// test set_unexpected
+
+#include <exception>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+void f3()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+    std::unexpected_handler old = std::set_unexpected(f1);
+    // verify there is a previous unexpected handler
+    assert(old);
+    // verify f1 was replace with f2
+    assert(std::set_unexpected(f2) == f1);
+    // verify calling original unexpected handler calls terminate
+    std::set_terminate(f3);
+    (*old)();
+    assert(0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/unexpected.handler/unexpected_handler.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/unexpected.handler/unexpected_handler.pass.cpp
new file mode 100644
index 0000000..b8736e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/unexpected.handler/unexpected_handler.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// test unexpected_handler
+
+#include <exception>
+
+#include "test_macros.h"
+
+void f() {}
+
+int main(int, char**)
+{
+    std::unexpected_handler p = f;
+    ((void)p);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/unexpected/unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/unexpected/unexpected.pass.cpp
new file mode 100644
index 0000000..fc49b4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/depr/exception.unexpected/unexpected/unexpected.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// test unexpected
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f1()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+    std::set_unexpected(f1);
+    std::unexpected();
+    assert(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/assertions/cassert.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/assertions/cassert.pass.cpp
new file mode 100644
index 0000000..79e17fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/assertions/cassert.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cassert>
+
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef assert
+#error assert not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/diagnostics.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/diagnostics.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/diagnostics.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/errno/cerrno.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/errno/cerrno.pass.cpp
new file mode 100644
index 0000000..d6c333f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/errno/cerrno.pass.cpp
@@ -0,0 +1,347 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cerrno>
+
+#include <cerrno>
+
+#include "test_macros.h"
+
+#ifndef E2BIG
+#error E2BIG not defined
+#endif
+
+#ifndef EACCES
+#error EACCES not defined
+#endif
+
+#ifndef EACCES
+#error EACCES not defined
+#endif
+
+#ifndef EADDRINUSE
+#error EADDRINUSE not defined
+#endif
+
+#ifndef EADDRNOTAVAIL
+#error EADDRNOTAVAIL not defined
+#endif
+
+#ifndef EAFNOSUPPORT
+#error EAFNOSUPPORT not defined
+#endif
+
+#ifndef EAGAIN
+#error EAGAIN not defined
+#endif
+
+#ifndef EALREADY
+#error EALREADY not defined
+#endif
+
+#ifndef EBADF
+#error EBADF not defined
+#endif
+
+#ifndef EBADMSG
+#error EBADMSG not defined
+#endif
+
+#ifndef EBUSY
+#error EBUSY not defined
+#endif
+
+#ifndef ECANCELED
+#error ECANCELED not defined
+#endif
+
+#ifndef ECHILD
+#error ECHILD not defined
+#endif
+
+#ifndef ECONNABORTED
+#error ECONNABORTED not defined
+#endif
+
+#ifndef ECONNREFUSED
+#error ECONNREFUSED not defined
+#endif
+
+#ifndef ECONNRESET
+#error ECONNRESET not defined
+#endif
+
+#ifndef EDEADLK
+#error EDEADLK not defined
+#endif
+
+#ifndef EDESTADDRREQ
+#error EDESTADDRREQ not defined
+#endif
+
+#ifndef EDOM
+#error EDOM not defined
+#endif
+
+#ifndef EEXIST
+#error EEXIST not defined
+#endif
+
+#ifndef EFAULT
+#error EFAULT not defined
+#endif
+
+#ifndef EFBIG
+#error EFBIG not defined
+#endif
+
+#ifndef EHOSTUNREACH
+#error EHOSTUNREACH not defined
+#endif
+
+#ifndef EIDRM
+#error EIDRM not defined
+#endif
+
+#ifndef EILSEQ
+#error EILSEQ not defined
+#endif
+
+#ifndef EINPROGRESS
+#error EINPROGRESS not defined
+#endif
+
+#ifndef EINTR
+#error EINTR not defined
+#endif
+
+#ifndef EINVAL
+#error EINVAL not defined
+#endif
+
+#ifndef EIO
+#error EIO not defined
+#endif
+
+#ifndef EISCONN
+#error EISCONN not defined
+#endif
+
+#ifndef EISDIR
+#error EISDIR not defined
+#endif
+
+#ifndef ELOOP
+#error ELOOP not defined
+#endif
+
+#ifndef EMFILE
+#error EMFILE not defined
+#endif
+
+#ifndef EMLINK
+#error EMLINK not defined
+#endif
+
+#ifndef EMSGSIZE
+#error EMSGSIZE not defined
+#endif
+
+#ifndef ENAMETOOLONG
+#error ENAMETOOLONG not defined
+#endif
+
+#ifndef ENETDOWN
+#error ENETDOWN not defined
+#endif
+
+#ifndef ENETRESET
+#error ENETRESET not defined
+#endif
+
+#ifndef ENETUNREACH
+#error ENETUNREACH not defined
+#endif
+
+#ifndef ENFILE
+#error ENFILE not defined
+#endif
+
+#ifndef ENOBUFS
+#error ENOBUFS not defined
+#endif
+
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+#ifndef ENODATA
+#error ENODATA not defined
+#endif
+#endif
+
+#ifndef ENODEV
+#error ENODEV not defined
+#endif
+
+#ifndef ENOENT
+#error ENOENT not defined
+#endif
+
+#ifndef ENOEXEC
+#error ENOEXEC not defined
+#endif
+
+#ifndef ENOLCK
+#error ENOLCK not defined
+#endif
+
+#ifndef ENOLINK
+#error ENOLINK not defined
+#endif
+
+#ifndef ENOMEM
+#error ENOMEM not defined
+#endif
+
+#ifndef ENOMSG
+#error ENOMSG not defined
+#endif
+
+#ifndef ENOPROTOOPT
+#error ENOPROTOOPT not defined
+#endif
+
+#ifndef ENOSPC
+#error ENOSPC not defined
+#endif
+
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+#ifndef ENOSR
+#error ENOSR not defined
+#endif
+#endif
+
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+#ifndef ENOSTR
+#error ENOSTR not defined
+#endif
+#endif
+
+#ifndef ENOSYS
+#error ENOSYS not defined
+#endif
+
+#ifndef ENOTCONN
+#error ENOTCONN not defined
+#endif
+
+#ifndef ENOTDIR
+#error ENOTDIR not defined
+#endif
+
+#ifndef ENOTEMPTY
+#error ENOTEMPTY not defined
+#endif
+
+#ifndef ENOTRECOVERABLE
+#error ENOTRECOVERABLE not defined
+#endif
+
+#ifndef ENOTSOCK
+#error ENOTSOCK not defined
+#endif
+
+#ifndef ENOTSUP
+#error ENOTSUP not defined
+#endif
+
+#ifndef ENOTTY
+#error ENOTTY not defined
+#endif
+
+#ifndef ENXIO
+#error ENXIO not defined
+#endif
+
+#ifndef EOPNOTSUPP
+#error EOPNOTSUPP not defined
+#endif
+
+#ifndef EOVERFLOW
+#error EOVERFLOW not defined
+#endif
+
+#ifndef EOWNERDEAD
+#error EOWNERDEAD not defined
+#endif
+
+#ifndef EPERM
+#error EPERM not defined
+#endif
+
+#ifndef EPIPE
+#error EPIPE not defined
+#endif
+
+#ifndef EPROTO
+#error EPROTO not defined
+#endif
+
+#ifndef EPROTONOSUPPORT
+#error EPROTONOSUPPORT not defined
+#endif
+
+#ifndef EPROTOTYPE
+#error EPROTOTYPE not defined
+#endif
+
+#ifndef ERANGE
+#error ERANGE not defined
+#endif
+
+#ifndef EROFS
+#error EROFS not defined
+#endif
+
+#ifndef ESPIPE
+#error ESPIPE not defined
+#endif
+
+#ifndef ESRCH
+#error ESRCH not defined
+#endif
+
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+#ifndef ETIME
+#error ETIME not defined
+#endif
+#endif
+
+#ifndef ETIMEDOUT
+#error ETIMEDOUT not defined
+#endif
+
+#ifndef ETXTBSY
+#error ETXTBSY not defined
+#endif
+
+#ifndef EWOULDBLOCK
+#error EWOULDBLOCK not defined
+#endif
+
+#ifndef EXDEV
+#error EXDEV not defined
+#endif
+
+#ifndef errno
+#error errno not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/domain.error/domain_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/domain.error/domain_error.pass.cpp
new file mode 100644
index 0000000..d01be6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/domain.error/domain_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test domain_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::logic_error, std::domain_error>::value),
+                 "std::is_base_of<std::logic_error, std::domain_error>::value");
+    static_assert(std::is_polymorphic<std::domain_error>::value,
+                 "std::is_polymorphic<std::domain_error>::value");
+    {
+    const char* msg = "domain_error message";
+    std::domain_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::domain_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another domain_error message");
+    std::domain_error e(msg);
+    assert(e.what() == msg);
+    std::domain_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/invalid.argument/invalid_argument.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/invalid.argument/invalid_argument.pass.cpp
new file mode 100644
index 0000000..a6d7803
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/invalid.argument/invalid_argument.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test invalid_argument
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::logic_error, std::invalid_argument>::value),
+                 "std::is_base_of<std::logic_error, std::invalid_argument>::value");
+    static_assert(std::is_polymorphic<std::invalid_argument>::value,
+                 "std::is_polymorphic<std::invalid_argument>::value");
+    {
+    const char* msg = "invalid_argument message";
+    std::invalid_argument e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::invalid_argument e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another invalid_argument message");
+    std::invalid_argument e(msg);
+    assert(e.what() == msg);
+    std::invalid_argument e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/length.error/length_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/length.error/length_error.pass.cpp
new file mode 100644
index 0000000..3a9096f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/length.error/length_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test length_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::logic_error, std::length_error>::value),
+                 "std::is_base_of<std::logic_error, std::length_error>::value");
+    static_assert(std::is_polymorphic<std::length_error>::value,
+                 "std::is_polymorphic<std::length_error>::value");
+    {
+    const char* msg = "length_error message";
+    std::length_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::length_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another length_error message");
+    std::length_error e(msg);
+    assert(e.what() == msg);
+    std::length_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/logic.error/logic_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/logic.error/logic_error.pass.cpp
new file mode 100644
index 0000000..48a401e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/logic.error/logic_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test logic_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::logic_error>::value),
+                 "std::is_base_of<std::exception, std::logic_error>::value");
+    static_assert(std::is_polymorphic<std::logic_error>::value,
+                 "std::is_polymorphic<std::logic_error>::value");
+    {
+    const char* msg = "logic_error message";
+    std::logic_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::logic_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another logic_error message");
+    std::logic_error e(msg);
+    assert(e.what() == msg);
+    std::logic_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/out.of.range/out_of_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/out.of.range/out_of_range.pass.cpp
new file mode 100644
index 0000000..ab5192d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/out.of.range/out_of_range.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test out_of_range
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::logic_error, std::out_of_range>::value),
+                 "std::is_base_of<std::logic_error, std::out_of_range>::value");
+    static_assert(std::is_polymorphic<std::out_of_range>::value,
+                 "std::is_polymorphic<std::out_of_range>::value");
+    {
+    const char* msg = "out_of_range message";
+    std::out_of_range e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::out_of_range e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another out_of_range message");
+    std::out_of_range e(msg);
+    assert(e.what() == msg);
+    std::out_of_range e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/overflow.error/overflow_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/overflow.error/overflow_error.pass.cpp
new file mode 100644
index 0000000..a5c3b9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/overflow.error/overflow_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test overflow_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::runtime_error, std::overflow_error>::value),
+                 "std::is_base_of<std::runtime_error, std::overflow_error>::value");
+    static_assert(std::is_polymorphic<std::overflow_error>::value,
+                 "std::is_polymorphic<std::overflow_error>::value");
+    {
+    const char* msg = "overflow_error message";
+    std::overflow_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::overflow_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another overflow_error message");
+    std::overflow_error e(msg);
+    assert(e.what() == msg);
+    std::overflow_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/range.error/range_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/range.error/range_error.pass.cpp
new file mode 100644
index 0000000..7316b18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/range.error/range_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test range_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::runtime_error, std::range_error>::value),
+                 "std::is_base_of<std::runtime_error, std::range_error>::value");
+    static_assert(std::is_polymorphic<std::range_error>::value,
+                 "std::is_polymorphic<std::range_error>::value");
+    {
+    const char* msg = "range_error message";
+    std::range_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::range_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another range_error message");
+    std::range_error e(msg);
+    assert(e.what() == msg);
+    std::range_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/runtime.error/runtime_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/runtime.error/runtime_error.pass.cpp
new file mode 100644
index 0000000..5bb0fff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/runtime.error/runtime_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test runtime_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::runtime_error>::value),
+                 "std::is_base_of<std::exception, std::runtime_error>::value");
+    static_assert(std::is_polymorphic<std::runtime_error>::value,
+                 "std::is_polymorphic<std::runtime_error>::value");
+    {
+    const char* msg = "runtime_error message";
+    std::runtime_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::runtime_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another runtime_error message");
+    std::runtime_error e(msg);
+    assert(e.what() == msg);
+    std::runtime_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/underflow.error/underflow_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/underflow.error/underflow_error.pass.cpp
new file mode 100644
index 0000000..03d7356
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/std.exceptions/underflow.error/underflow_error.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test underflow_error
+
+#include <stdexcept>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::runtime_error, std::underflow_error>::value),
+                 "std::is_base_of<std::runtime_error, std::underflow_error>::value");
+    static_assert(std::is_polymorphic<std::underflow_error>::value,
+                 "std::is_polymorphic<std::underflow_error>::value");
+    {
+    const char* msg = "underflow_error message";
+    std::underflow_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::underflow_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+    }
+    {
+    std::string msg("another underflow_error message");
+    std::underflow_error e(msg);
+    assert(e.what() == msg);
+    std::underflow_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/errc.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/errc.pass.cpp
new file mode 100644
index 0000000..6a04a3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/errc.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// enum errc {...}
+
+#include <system_error>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(static_cast<int>(std::errc::address_family_not_supported) == EAFNOSUPPORT, "");
+    static_assert(static_cast<int>(std::errc::address_in_use) == EADDRINUSE, "");
+    static_assert(static_cast<int>(std::errc::address_not_available) == EADDRNOTAVAIL, "");
+    static_assert(static_cast<int>(std::errc::already_connected) == EISCONN, "");
+    static_assert(static_cast<int>(std::errc::argument_list_too_long) == E2BIG, "");
+    static_assert(static_cast<int>(std::errc::argument_out_of_domain) == EDOM, "");
+    static_assert(static_cast<int>(std::errc::bad_address) == EFAULT, "");
+    static_assert(static_cast<int>(std::errc::bad_file_descriptor) == EBADF, "");
+    static_assert(static_cast<int>(std::errc::bad_message) == EBADMSG, "");
+    static_assert(static_cast<int>(std::errc::broken_pipe) == EPIPE, "");
+    static_assert(static_cast<int>(std::errc::connection_aborted) == ECONNABORTED, "");
+    static_assert(static_cast<int>(std::errc::connection_already_in_progress) == EALREADY, "");
+    static_assert(static_cast<int>(std::errc::connection_refused) == ECONNREFUSED, "");
+    static_assert(static_cast<int>(std::errc::connection_reset) == ECONNRESET, "");
+    static_assert(static_cast<int>(std::errc::cross_device_link) == EXDEV, "");
+    static_assert(static_cast<int>(std::errc::destination_address_required) == EDESTADDRREQ, "");
+    static_assert(static_cast<int>(std::errc::device_or_resource_busy) == EBUSY, "");
+    static_assert(static_cast<int>(std::errc::directory_not_empty) == ENOTEMPTY, "");
+    static_assert(static_cast<int>(std::errc::executable_format_error) == ENOEXEC, "");
+    static_assert(static_cast<int>(std::errc::file_exists) == EEXIST, "");
+    static_assert(static_cast<int>(std::errc::file_too_large) == EFBIG, "");
+    static_assert(static_cast<int>(std::errc::filename_too_long) == ENAMETOOLONG, "");
+    static_assert(static_cast<int>(std::errc::function_not_supported) == ENOSYS, "");
+    static_assert(static_cast<int>(std::errc::host_unreachable) == EHOSTUNREACH, "");
+    static_assert(static_cast<int>(std::errc::identifier_removed) == EIDRM, "");
+    static_assert(static_cast<int>(std::errc::illegal_byte_sequence) == EILSEQ, "");
+    static_assert(static_cast<int>(std::errc::inappropriate_io_control_operation) == ENOTTY, "");
+    static_assert(static_cast<int>(std::errc::interrupted) == EINTR, "");
+    static_assert(static_cast<int>(std::errc::invalid_argument) == EINVAL, "");
+    static_assert(static_cast<int>(std::errc::invalid_seek) == ESPIPE, "");
+    static_assert(static_cast<int>(std::errc::io_error) == EIO, "");
+    static_assert(static_cast<int>(std::errc::is_a_directory) == EISDIR, "");
+    static_assert(static_cast<int>(std::errc::message_size) == EMSGSIZE, "");
+    static_assert(static_cast<int>(std::errc::network_down) == ENETDOWN, "");
+    static_assert(static_cast<int>(std::errc::network_reset) == ENETRESET, "");
+    static_assert(static_cast<int>(std::errc::network_unreachable) == ENETUNREACH, "");
+    static_assert(static_cast<int>(std::errc::no_buffer_space) == ENOBUFS, "");
+    static_assert(static_cast<int>(std::errc::no_child_process) == ECHILD, "");
+    static_assert(static_cast<int>(std::errc::no_link) == ENOLINK, "");
+    static_assert(static_cast<int>(std::errc::no_lock_available) == ENOLCK, "");
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+    static_assert(static_cast<int>(std::errc::no_message_available) == ENODATA, "");
+#endif
+    static_assert(static_cast<int>(std::errc::no_message) == ENOMSG, "");
+    static_assert(static_cast<int>(std::errc::no_protocol_option) == ENOPROTOOPT, "");
+    static_assert(static_cast<int>(std::errc::no_space_on_device) == ENOSPC, "");
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+    static_assert(static_cast<int>(std::errc::no_stream_resources) == ENOSR, "");
+#endif
+    static_assert(static_cast<int>(std::errc::no_such_device_or_address) == ENXIO, "");
+    static_assert(static_cast<int>(std::errc::no_such_device) == ENODEV, "");
+    static_assert(static_cast<int>(std::errc::no_such_file_or_directory) == ENOENT, "");
+    static_assert(static_cast<int>(std::errc::no_such_process) == ESRCH, "");
+    static_assert(static_cast<int>(std::errc::not_a_directory) == ENOTDIR, "");
+    static_assert(static_cast<int>(std::errc::not_a_socket) == ENOTSOCK, "");
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+    static_assert(static_cast<int>(std::errc::not_a_stream) == ENOSTR, "");
+#endif
+    static_assert(static_cast<int>(std::errc::not_connected) == ENOTCONN, "");
+    static_assert(static_cast<int>(std::errc::not_enough_memory) == ENOMEM, "");
+    static_assert(static_cast<int>(std::errc::not_supported) == ENOTSUP, "");
+    static_assert(static_cast<int>(std::errc::operation_canceled) == ECANCELED, "");
+    static_assert(static_cast<int>(std::errc::operation_in_progress) == EINPROGRESS, "");
+    static_assert(static_cast<int>(std::errc::operation_not_permitted) == EPERM, "");
+    static_assert(static_cast<int>(std::errc::operation_not_supported) == EOPNOTSUPP, "");
+    static_assert(static_cast<int>(std::errc::operation_would_block) == EWOULDBLOCK, "");
+    static_assert(static_cast<int>(std::errc::owner_dead) == EOWNERDEAD, "");
+    static_assert(static_cast<int>(std::errc::permission_denied) == EACCES, "");
+    static_assert(static_cast<int>(std::errc::protocol_error) == EPROTO, "");
+    static_assert(static_cast<int>(std::errc::protocol_not_supported) == EPROTONOSUPPORT, "");
+    static_assert(static_cast<int>(std::errc::read_only_file_system) == EROFS, "");
+    static_assert(static_cast<int>(std::errc::resource_deadlock_would_occur) == EDEADLK, "");
+    static_assert(static_cast<int>(std::errc::resource_unavailable_try_again) == EAGAIN, "");
+    static_assert(static_cast<int>(std::errc::result_out_of_range) == ERANGE, "");
+    static_assert(static_cast<int>(std::errc::state_not_recoverable) == ENOTRECOVERABLE, "");
+#if (defined(_XOPEN_STREAMS) && _XOPEN_STREAMS != -1)
+    static_assert(static_cast<int>(std::errc::stream_timeout) == ETIME, "");
+#endif
+    static_assert(static_cast<int>(std::errc::text_file_busy) == ETXTBSY, "");
+    static_assert(static_cast<int>(std::errc::timed_out) == ETIMEDOUT, "");
+    static_assert(static_cast<int>(std::errc::too_many_files_open_in_system) == ENFILE, "");
+    static_assert(static_cast<int>(std::errc::too_many_files_open) == EMFILE, "");
+    static_assert(static_cast<int>(std::errc::too_many_links) == EMLINK, "");
+    static_assert(static_cast<int>(std::errc::too_many_symbolic_link_levels) == ELOOP, "");
+    static_assert(static_cast<int>(std::errc::value_too_large) == EOVERFLOW, "");
+    static_assert(static_cast<int>(std::errc::wrong_protocol_type) == EPROTOTYPE, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/is_error_code_enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/is_error_code_enum.pass.cpp
new file mode 100644
index 0000000..80735ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/is_error_code_enum.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+
+// <system_error>
+
+// template <> struct is_error_code_enum<> : public false_type {};
+
+#include <system_error>
+#include <string>
+#include "test_macros.h"
+
+template <bool Expected, class T>
+void
+test()
+{
+    static_assert((std::is_error_code_enum<T>::value == Expected), "");
+#if TEST_STD_VER > 14
+    static_assert((std::is_error_code_enum_v<T>      == Expected), "");
+    ASSERT_SAME_TYPE(decltype(std::is_error_code_enum_v<T>), const bool);
+#endif
+}
+
+class A {
+    A();
+    operator std::error_code () const { return std::error_code(); }
+};
+
+// Specialize the template for my class
+namespace std
+{
+  template <>
+  struct is_error_code_enum<A> : public std::true_type {};
+}
+
+
+int main(int, char**)
+{
+    test<false, void>();
+    test<false, int>();
+    test<false, std::nullptr_t>();
+    test<false, std::string>();
+
+    test<true, A>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/is_error_condition_enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/is_error_condition_enum.pass.cpp
new file mode 100644
index 0000000..2f766e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/is_error_condition_enum.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <system_error>
+
+// template <class T> constexpr bool is_error_condition_enum_v;
+
+#include <system_error>
+#include <type_traits>
+#include "test_macros.h"
+
+template <bool Expected, class T>
+void
+test()
+{
+    static_assert((std::is_error_condition_enum<T>::value == Expected), "");
+#if TEST_STD_VER > 14
+    static_assert((std::is_error_condition_enum_v<T>        == Expected), "");
+    ASSERT_SAME_TYPE(decltype(std::is_error_condition_enum_v<T>), const bool);
+#endif
+}
+
+class A {
+    A();
+    operator std::error_condition () const { return std::error_condition(); }
+};
+
+// Specialize the template for my class
+namespace std
+{
+  template <>
+  struct is_error_condition_enum<A> : public std::true_type {};
+}
+
+
+int main(int, char**)
+{
+    test<false, void>();
+    test<false, int>();
+    test<false, std::nullptr_t>();
+    test<false, std::string>();
+
+    test<true, A>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/cmp_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/cmp_error_code.pass.cpp
new file mode 100644
index 0000000..1fac9d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/cmp_error_code.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <system_error>
+
+// class error_code
+
+// strong_ordering operator<=>(const error_code& lhs, const error_code& rhs) noexcept
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**) {
+  AssertOrderAreNoexcept<std::error_code>();
+  AssertOrderReturn<std::strong_ordering, std::error_code>();
+
+  // Same error category
+  std::error_code ec1a = std::error_code(1, std::generic_category());
+  std::error_code ec1b = std::error_code(1, std::generic_category());
+  std::error_code ec2  = std::error_code(2, std::generic_category());
+
+  assert(testOrder(ec1a, ec1b, std::strong_ordering::equal));
+  assert(testOrder(ec1a, ec2, std::strong_ordering::less));
+
+  // Different error category
+  const std::error_code& ec3 = std::error_code(2, std::system_category());
+
+  bool isLess = ec2 < ec3;
+  assert(testOrder(ec2, ec3, isLess ? std::strong_ordering::less : std::strong_ordering::greater));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/cmp_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/cmp_error_condition.pass.cpp
new file mode 100644
index 0000000..cb84550
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/cmp_error_condition.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <system_error>
+
+// class error_condition
+
+// strong_ordering operator<=>(const error_condition& lhs, const error_condition& rhs) noexcept
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**) {
+  AssertOrderAreNoexcept<std::error_condition>();
+  AssertOrderReturn<std::strong_ordering, std::error_condition>();
+
+  // Same error category
+  std::error_condition ec1a = std::error_condition(1, std::generic_category());
+  std::error_condition ec1b = std::error_condition(1, std::generic_category());
+  std::error_condition ec2  = std::error_condition(2, std::generic_category());
+
+  assert(testOrder(ec1a, ec1b, std::strong_ordering::equal));
+  assert(testOrder(ec1a, ec2, std::strong_ordering::less));
+
+  // Different error category
+  const std::error_condition& ec3 = std::error_condition(2, std::system_category());
+
+  bool isLess = ec2 < ec3;
+  assert(testOrder(ec2, ec3, isLess ? std::strong_ordering::less : std::strong_ordering::greater));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/eq_error_code_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/eq_error_code_error_code.pass.cpp
new file mode 100644
index 0000000..c63bfcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.compare/eq_error_code_error_code.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// bool operator==(const error_code&      lhs, const error_code&      rhs);
+// bool operator==(const error_code&      lhs, const error_condition& rhs);
+// bool operator==(const error_condition& lhs, const error_code&      rhs);
+// bool operator==(const error_condition& lhs, const error_condition& rhs);
+// bool operator!=(const error_code&      lhs, const error_code&      rhs);
+// bool operator!=(const error_code&      lhs, const error_condition& rhs);
+// bool operator!=(const error_condition& lhs, const error_code&      rhs);
+// bool operator!=(const error_condition& lhs, const error_condition& rhs);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::error_code e_code1(5, std::generic_category());
+    std::error_code e_code2(5, std::system_category());
+    std::error_code e_code3(6, std::generic_category());
+    std::error_code e_code4(6, std::system_category());
+    std::error_condition e_condition1(5, std::generic_category());
+    std::error_condition e_condition2(5, std::system_category());
+    std::error_condition e_condition3(6, std::generic_category());
+    std::error_condition e_condition4(6, std::system_category());
+
+    assert(e_code1 == e_code1);
+    assert(e_code1 != e_code2);
+    assert(e_code1 != e_code3);
+    assert(e_code1 != e_code4);
+    assert(e_code1 == e_condition1);
+    assert(e_code1 != e_condition2);
+    assert(e_code1 != e_condition3);
+    assert(e_code1 != e_condition4);
+
+    assert(e_code2 != e_code1);
+    assert(e_code2 == e_code2);
+    assert(e_code2 != e_code3);
+    assert(e_code2 != e_code4);
+    assert(e_code2 == e_condition1);  // ?
+    assert(e_code2 == e_condition2);
+    assert(e_code2 != e_condition3);
+    assert(e_code2 != e_condition4);
+
+    assert(e_code3 != e_code1);
+    assert(e_code3 != e_code2);
+    assert(e_code3 == e_code3);
+    assert(e_code3 != e_code4);
+    assert(e_code3 != e_condition1);
+    assert(e_code3 != e_condition2);
+    assert(e_code3 == e_condition3);
+    assert(e_code3 != e_condition4);
+
+    assert(e_code4 != e_code1);
+    assert(e_code4 != e_code2);
+    assert(e_code4 != e_code3);
+    assert(e_code4 == e_code4);
+    assert(e_code4 != e_condition1);
+    assert(e_code4 != e_condition2);
+    assert(e_code4 == e_condition3);  // ?
+    assert(e_code4 == e_condition4);
+
+    assert(e_condition1 == e_code1);
+    assert(e_condition1 == e_code2);  // ?
+    assert(e_condition1 != e_code3);
+    assert(e_condition1 != e_code4);
+    assert(e_condition1 == e_condition1);
+    assert(e_condition1 != e_condition2);
+    assert(e_condition1 != e_condition3);
+    assert(e_condition1 != e_condition4);
+
+    assert(e_condition2 != e_code1);
+    assert(e_condition2 == e_code2);
+    assert(e_condition2 != e_code3);
+    assert(e_condition2 != e_code4);
+    assert(e_condition2 != e_condition1);
+    assert(e_condition2 == e_condition2);
+    assert(e_condition2 != e_condition3);
+    assert(e_condition2 != e_condition4);
+
+    assert(e_condition3 != e_code1);
+    assert(e_condition3 != e_code2);
+    assert(e_condition3 == e_code3);
+    assert(e_condition3 == e_code4);  // ?
+    assert(e_condition3 != e_condition1);
+    assert(e_condition3 != e_condition2);
+    assert(e_condition3 == e_condition3);
+    assert(e_condition3 != e_condition4);
+
+    assert(e_condition4 != e_code1);
+    assert(e_condition4 != e_code2);
+    assert(e_condition4 != e_code3);
+    assert(e_condition4 == e_code4);
+    assert(e_condition4 != e_condition1);
+    assert(e_condition4 != e_condition2);
+    assert(e_condition4 != e_condition3);
+    assert(e_condition4 == e_condition4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.derived/message.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.derived/message.pass.cpp
new file mode 100644
index 0000000..a899638
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.derived/message.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// virtual string message(int ev) const = 0;
+
+#include <system_error>
+#include <cassert>
+#include <string>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::generic_category();
+    const std::error_category& e_cat2 = std::system_category();
+    std::string m1 = e_cat1.message(5);
+    std::string m2 = e_cat2.message(5);
+    std::string m3 = e_cat2.message(6);
+    assert(!m1.empty());
+    assert(!m2.empty());
+    assert(!m3.empty());
+    assert(m1 == m2);
+    assert(m1 != m3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/cmp.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/cmp.pass.cpp
new file mode 100644
index 0000000..914acea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/cmp.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <system_error>
+
+// class error_category
+
+// strong_ordering operator<=>(const error_category& rhs) const noexcept;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**) {
+  AssertOrderAreNoexcept<std::error_category>();
+  AssertOrderReturn<std::strong_ordering, std::error_category>();
+
+  const std::error_category& e_cat1 = std::generic_category();
+  const std::error_category& e_cat2 = std::generic_category();
+  const std::error_category& e_cat3 = std::system_category();
+
+  assert(testOrder(e_cat1, e_cat2, std::strong_ordering::equal));
+
+  bool isLess = e_cat1 < e_cat3;
+  assert(testOrder(e_cat1, e_cat3, isLess ? std::strong_ordering::less : std::strong_ordering::greater));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/default_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/default_ctor.pass.cpp
new file mode 100644
index 0000000..78baa5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/default_ctor.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <system_error>
+
+// class error_category
+
+// constexpr error_category() noexcept;
+
+#include <system_error>
+#include <type_traits>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test1
+    : public std::error_category
+{
+public:
+    constexpr test1() = default;  // won't compile if error_category() is not constexpr
+    virtual const char* name() const noexcept {return nullptr;}
+    virtual std::string message(int) const {return std::string();}
+};
+
+int main(int, char**)
+{
+    static_assert(std::is_nothrow_default_constructible<test1>::value,
+                                 "error_category() must exist and be noexcept");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/eq.pass.cpp
new file mode 100644
index 0000000..411fead
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/eq.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// bool operator==(const error_category& rhs) const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::generic_category();
+    const std::error_category& e_cat2 = std::generic_category();
+    const std::error_category& e_cat3 = std::system_category();
+    assert(e_cat1 == e_cat2);
+    assert(!(e_cat1 == e_cat3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/lt.pass.cpp
new file mode 100644
index 0000000..6cce942
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/lt.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// bool operator<(const error_category& rhs) const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::generic_category();
+    const std::error_category& e_cat2 = std::generic_category();
+    const std::error_category& e_cat3 = std::system_category();
+    assert(!(e_cat1 < e_cat2) && !(e_cat2 < e_cat1));
+    assert((e_cat1 < e_cat3) || (e_cat3 < e_cat1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/neq.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/neq.pass.cpp
new file mode 100644
index 0000000..65bc81b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.nonvirtuals/neq.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// bool operator!=(const error_category& rhs) const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::generic_category();
+    const std::error_category& e_cat2 = std::generic_category();
+    const std::error_category& e_cat3 = std::system_category();
+    assert(!(e_cat1 != e_cat2));
+    assert(e_cat1 != e_cat3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/generic_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/generic_category.pass.cpp
new file mode 100644
index 0000000..4570d57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/generic_category.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: suse-linux-enterprise-server-11
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <system_error>
+
+// class error_category
+
+// const error_category& generic_category();
+
+#include <system_error>
+#include <cassert>
+#include <string>
+#include <cerrno>
+
+#include "test_macros.h"
+
+void test_message_for_bad_value() {
+    errno = E2BIG; // something that message will never generate
+    const std::error_category& e_cat1 = std::generic_category();
+    const std::string msg = e_cat1.message(-1);
+    // Exact message format varies by platform.
+#if defined(_AIX)
+    LIBCPP_ASSERT(msg.rfind("Error -1 occurred", 0) == 0);
+#else
+    LIBCPP_ASSERT(msg.rfind("Unknown error", 0) == 0);
+#endif
+    assert(errno == E2BIG);
+}
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::generic_category();
+    std::string m1 = e_cat1.name();
+    assert(m1 == "generic");
+    {
+        test_message_for_bad_value();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/system_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/system_category.pass.cpp
new file mode 100644
index 0000000..415a900
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/system_category.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// const error_category& system_category();
+
+// XFAIL: suse-linux-enterprise-server-11
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+#include <system_error>
+#include <cassert>
+#include <string>
+#include <cerrno>
+
+#include "test_macros.h"
+
+void test_message_for_bad_value() {
+    errno = E2BIG; // something that message will never generate
+    const std::error_category& e_cat1 = std::system_category();
+    const std::string msg = e_cat1.message(-1);
+    // Exact message format varies by platform.
+#if defined(_AIX)
+    LIBCPP_ASSERT(msg.rfind("Error -1 occurred", 0) == 0);
+#else
+    LIBCPP_ASSERT(msg.rfind("Unknown error", 0) == 0);
+#endif
+    assert(errno == E2BIG);
+}
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::system_category();
+    std::error_condition e_cond = e_cat1.default_error_condition(5);
+    assert(e_cond.value() == 5);
+    assert(e_cond.category() == std::generic_category());
+    e_cond = e_cat1.default_error_condition(5000);
+    assert(e_cond.value() == 5000);
+    assert(e_cond.category() == std::system_category());
+    {
+        test_message_for_bad_value();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.overview/error_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.overview/error_category.pass.cpp
new file mode 100644
index 0000000..5108e89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.overview/error_category.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+#include <system_error>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::error_category* p = 0;
+    ((void)p);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/default_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/default_error_condition.pass.cpp
new file mode 100644
index 0000000..4c975d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/default_error_condition.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// virtual error_condition default_error_condition(int ev) const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat = std::generic_category();
+    std::error_condition e_cond = e_cat.default_error_condition(static_cast<int>(std::errc::not_a_directory));
+    assert(e_cond.category() == e_cat);
+    assert(e_cond.value() == static_cast<int>(std::errc::not_a_directory));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/equivalent_error_code_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/equivalent_error_code_int.pass.cpp
new file mode 100644
index 0000000..de75999
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/equivalent_error_code_int.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// virtual bool equivalent(const error_code& code, int condition) const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat = std::generic_category();
+    assert(e_cat.equivalent(std::error_code(5, e_cat), 5));
+    assert(!e_cat.equivalent(std::error_code(5, e_cat), 6));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/equivalent_int_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/equivalent_int_error_condition.pass.cpp
new file mode 100644
index 0000000..9682a9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.virtuals/equivalent_int_error_condition.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_category
+
+// virtual bool equivalent(int code, const error_condition& condition) const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat = std::generic_category();
+    std::error_condition e_cond = e_cat.default_error_condition(5);
+    assert(e_cat.equivalent(5, e_cond));
+    assert(!e_cat.equivalent(6, e_cond));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/ErrorCodeEnum.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/ErrorCodeEnum.pass.cpp
new file mode 100644
index 0000000..bfd6fd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/ErrorCodeEnum.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// template <ErrorCodeEnum E> error_code(E e);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+enum testing
+{
+    zero, one, two
+};
+
+namespace std
+{
+
+template <> struct is_error_code_enum<testing> : public std::true_type {};
+
+}
+
+std::error_code
+make_error_code(testing x)
+{
+    return std::error_code(static_cast<int>(x), std::generic_category());
+}
+
+int main(int, char**)
+{
+    {
+        std::error_code ec(two);
+        assert(ec.value() == 2);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/default.pass.cpp
new file mode 100644
index 0000000..99f1c0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/default.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// error_code();
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::error_code ec;
+    assert(ec.value() == 0);
+    assert(ec.category() == std::system_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/int_error_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/int_error_category.pass.cpp
new file mode 100644
index 0000000..63fac7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/int_error_category.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// error_code(int val, const error_category& cat);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec(6, std::system_category());
+        assert(ec.value() == 6);
+        assert(ec.category() == std::system_category());
+    }
+    {
+        std::error_code ec(8, std::generic_category());
+        assert(ec.value() == 8);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/lwg3629.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/lwg3629.pass.cpp
new file mode 100644
index 0000000..9e9e21f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.constructors/lwg3629.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// template <ErrorCodeEnum E> error_code(E e);
+
+// Regression test for https://github.com/llvm/llvm-project/issues/57614
+
+int make_error_code; // It's important that this comes before <system_error>
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+namespace User {
+  enum Err {};
+
+  std::error_code make_error_code(Err) { return std::error_code(42, std::generic_category()); }
+}
+
+namespace std {
+  template <>
+  struct is_error_code_enum<User::Err> : true_type {};
+}
+
+int main(int, char**) {
+  std::error_code e((User::Err()));
+  assert(e.value() == 42);
+  assert(e.category() == std::generic_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/ErrorCodeEnum.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/ErrorCodeEnum.pass.cpp
new file mode 100644
index 0000000..0f5aa8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/ErrorCodeEnum.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// template <ErrorCodeEnum E> error_code& operator=(E e);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+enum testing
+{
+    zero, one, two
+};
+
+namespace std
+{
+
+template <> struct is_error_code_enum<testing> : public std::true_type {};
+
+}
+
+std::error_code
+make_error_code(testing x)
+{
+    return std::error_code(static_cast<int>(x), std::generic_category());
+}
+
+int main(int, char**)
+{
+    {
+        std::error_code ec;
+        ec = two;
+        assert(ec.value() == 2);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/assign.pass.cpp
new file mode 100644
index 0000000..02aee60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/assign.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// void assign(int val, const error_category& cat);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec;
+        ec.assign(6, std::system_category());
+        assert(ec.value() == 6);
+        assert(ec.category() == std::system_category());
+    }
+    {
+        std::error_code ec;
+        ec.assign(8, std::generic_category());
+        assert(ec.value() == 8);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..14ba9e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/clear.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// void clear();
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec;
+        ec.assign(6, std::generic_category());
+        assert(ec.value() == 6);
+        assert(ec.category() == std::generic_category());
+        ec.clear();
+        assert(ec.value() == 0);
+        assert(ec.category() == std::system_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/lwg3629.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/lwg3629.pass.cpp
new file mode 100644
index 0000000..4e5bcc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.modifiers/lwg3629.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// template <ErrorCodeEnum E> error_code& operator=(E e);
+
+// Regression test for https://github.com/llvm/llvm-project/issues/57614
+
+int make_error_code; // It's important that this comes before <system_error>
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+namespace User {
+  enum Err {};
+
+  std::error_code make_error_code(Err) { return std::error_code(42, std::generic_category()); }
+}
+
+namespace std {
+  template <>
+  struct is_error_code_enum<User::Err> : true_type {};
+}
+
+int main(int, char**) {
+  std::error_code e;
+  e = User::Err();
+  assert(e.value() == 42);
+  assert(e.category() == std::generic_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/lt.pass.cpp
new file mode 100644
index 0000000..97d1de4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/lt.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// bool operator<(const error_code& lhs, const error_code& rhs);
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_code ec1(6, std::generic_category());
+        const std::error_code ec2(7, std::generic_category());
+        assert(ec1 < ec2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/make_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/make_error_code.pass.cpp
new file mode 100644
index 0000000..9f65a93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/make_error_code.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// error_code make_error_code(errc e);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec = make_error_code(std::errc::operation_canceled);
+        assert(ec.value() == static_cast<int>(std::errc::operation_canceled));
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/stream_inserter.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/stream_inserter.pass.cpp
new file mode 100644
index 0000000..03199d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.nonmembers/stream_inserter.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <system_error>
+
+// class error_code
+
+// template <class charT, class traits>
+//   basic_ostream<charT,traits>&
+//   operator<<(basic_ostream<charT,traits>& os, const error_code& ec);
+
+#include <system_error>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ostringstream out;
+    out << std::error_code(std::io_errc::stream);
+    assert(out.str() == "iostream:1");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/bool.pass.cpp
new file mode 100644
index 0000000..2e14096
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/bool.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// explicit operator bool() const;
+
+#include <system_error>
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_constructible<bool, std::error_code>::value, "");
+    static_assert(!std::is_convertible<std::error_code, bool>::value, "");
+
+    {
+        const std::error_code ec(6, std::generic_category());
+        assert(static_cast<bool>(ec));
+    }
+    {
+        const std::error_code ec(0, std::generic_category());
+        assert(!static_cast<bool>(ec));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/category.pass.cpp
new file mode 100644
index 0000000..36d1018
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/category.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// const error_category& category() const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_code ec(6, std::generic_category());
+    assert(ec.category() == std::generic_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/default_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/default_error_condition.pass.cpp
new file mode 100644
index 0000000..2c8f3cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/default_error_condition.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// error_condition default_error_condition() const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_code ec(6, std::generic_category());
+        std::error_condition e_cond = ec.default_error_condition();
+        assert(e_cond == ec);
+    }
+    {
+        const std::error_code ec(6, std::system_category());
+        std::error_condition e_cond = ec.default_error_condition();
+        assert(e_cond == ec);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/message.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/message.pass.cpp
new file mode 100644
index 0000000..e787ef9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/message.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// string message() const;
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_code ec(6, std::generic_category());
+    assert(ec.message() == std::generic_category().message(6));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/value.pass.cpp
new file mode 100644
index 0000000..5881777
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.observers/value.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_code
+
+// int value() const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_code ec(6, std::system_category());
+    assert(ec.value() == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.overview/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.overview/types.pass.cpp
new file mode 100644
index 0000000..b2441ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcode/syserr.errcode.overview/types.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+// class error_code
+
+// Make sure that the error_code bits of <system_error> are self-contained.
+
+#include <system_error>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::error_code x;
+    TEST_IGNORE_NODISCARD  x.category();   // returns a std::error_category &
+    TEST_IGNORE_NODISCARD  x.default_error_condition(); // std::error_condition
+    TEST_IGNORE_NODISCARD  x.message();    // returns a std::string
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/ErrorConditionEnum.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/ErrorConditionEnum.pass.cpp
new file mode 100644
index 0000000..24aa1e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/ErrorConditionEnum.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// template <ErrorConditionEnum E> error_condition(E e);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_condition ec(std::errc::not_a_directory);
+        assert(ec.value() == static_cast<int>(std::errc::not_a_directory));
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/default.pass.cpp
new file mode 100644
index 0000000..8399fbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/default.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// error_condition();
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::error_condition ec;
+    assert(ec.value() == 0);
+    assert(ec.category() == std::generic_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/int_error_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/int_error_category.pass.cpp
new file mode 100644
index 0000000..3daed10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/int_error_category.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// error_condition(int val, const error_category& cat);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_condition ec(6, std::system_category());
+        assert(ec.value() == 6);
+        assert(ec.category() == std::system_category());
+    }
+    {
+        std::error_condition ec(8, std::generic_category());
+        assert(ec.value() == 8);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/lwg3629.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/lwg3629.pass.cpp
new file mode 100644
index 0000000..2d2d43a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.constructors/lwg3629.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// template <ErrorCodeEnum E> error_condition(E e);
+
+// Regression test for https://github.com/llvm/llvm-project/issues/57614
+
+int make_error_condition; // It's important that this comes before <system_error>
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+namespace User {
+  enum Err {};
+
+  std::error_condition make_error_condition(Err) { return std::error_condition(42, std::generic_category()); }
+}
+
+namespace std {
+  template <>
+  struct is_error_condition_enum<User::Err> : true_type {};
+}
+
+int main(int, char**) {
+  std::error_condition e((User::Err()));
+  assert(e.value() == 42);
+  assert(e.category() == std::generic_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/ErrorConditionEnum.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/ErrorConditionEnum.pass.cpp
new file mode 100644
index 0000000..a263d76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/ErrorConditionEnum.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// template <ErrorConditionEnum E> error_condition& operator=(E e);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_condition ec;
+        ec = std::errc::not_enough_memory;
+        assert(ec.value() == static_cast<int>(std::errc::not_enough_memory));
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/assign.pass.cpp
new file mode 100644
index 0000000..18c8b36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/assign.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// void assign(int val, const error_category& cat);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_condition ec;
+        ec.assign(6, std::system_category());
+        assert(ec.value() == 6);
+        assert(ec.category() == std::system_category());
+    }
+    {
+        std::error_condition ec;
+        ec.assign(8, std::generic_category());
+        assert(ec.value() == 8);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..e3cfe60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/clear.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// void clear();
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_condition ec;
+        ec.assign(6, std::system_category());
+        assert(ec.value() == 6);
+        assert(ec.category() == std::system_category());
+        ec.clear();
+        assert(ec.value() == 0);
+        assert(ec.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/lwg3629.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/lwg3629.pass.cpp
new file mode 100644
index 0000000..72cc77b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.modifiers/lwg3629.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// template <ErrorCodeEnum E> error_condition& operator=(E e);
+
+// Regression test for https://github.com/llvm/llvm-project/issues/57614
+
+int make_error_condition; // It's important that this comes before <system_error>
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+namespace User {
+  enum Err {};
+
+  std::error_condition make_error_condition(Err) { return std::error_condition(42, std::generic_category()); }
+}
+
+namespace std {
+  template <>
+  struct is_error_condition_enum<User::Err> : true_type {};
+}
+
+int main(int, char**) {
+  std::error_condition e;
+  e = User::Err();
+  assert(e.value() == 42);
+  assert(e.category() == std::generic_category());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.nonmembers/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.nonmembers/lt.pass.cpp
new file mode 100644
index 0000000..cc1cdf9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.nonmembers/lt.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// bool operator<(const error_condition& lhs, const error_condition& rhs);
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_condition ec1(6, std::generic_category());
+        const std::error_condition ec2(7, std::generic_category());
+        assert(ec1 < ec2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.nonmembers/make_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.nonmembers/make_error_condition.pass.cpp
new file mode 100644
index 0000000..ec8ce3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.nonmembers/make_error_condition.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// error_condition make_error_condition(errc e);
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_condition ec1 = std::make_error_condition(std::errc::message_size);
+        assert(ec1.value() == static_cast<int>(std::errc::message_size));
+        assert(ec1.category() == std::generic_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/bool.pass.cpp
new file mode 100644
index 0000000..449d3c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/bool.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// explicit operator bool() const;
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_condition ec(6, std::generic_category());
+        assert(static_cast<bool>(ec));
+    }
+    {
+        const std::error_condition ec(0, std::generic_category());
+        assert(!static_cast<bool>(ec));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/category.pass.cpp
new file mode 100644
index 0000000..18cdedb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/category.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// const error_category& category() const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_condition ec(6, std::generic_category());
+    assert(ec.category() == std::generic_category());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/message.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/message.pass.cpp
new file mode 100644
index 0000000..ce75678
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/message.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// string message() const;
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_condition ec(6, std::generic_category());
+    assert(ec.message() == std::generic_category().message(6));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/value.pass.cpp
new file mode 100644
index 0000000..0cdc327
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.observers/value.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class error_condition
+
+// int value() const;
+
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_condition ec(6, std::system_category());
+    assert(ec.value() == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.overview/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.overview/types.pass.cpp
new file mode 100644
index 0000000..85a0155
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.errcondition/syserr.errcondition.overview/types.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+// class error_condition
+
+// Make sure that the error_condition bits of <system_error> are self-contained.
+
+#include <system_error>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::error_condition x = std::errc(0);
+    TEST_IGNORE_NODISCARD  x.category();   // returns a std::error_condition &
+    TEST_IGNORE_NODISCARD  x.message();    // returns a std::string
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/enabled_hash.pass.cpp
new file mode 100644
index 0000000..2aab698
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/enabled_hash.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <system_error>
+
+// Test that <system_error> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <system_error>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  {
+    test_hash_enabled_for_type<std::error_code>();
+    test_hash_enabled_for_type<std::error_condition>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/error_code.pass.cpp
new file mode 100644
index 0000000..2e07d09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/error_code.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void
+test(int i)
+{
+    typedef std::error_code T;
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<H::argument_type, T>::value), "" );
+    static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    H h;
+    T ec(i, std::system_category());
+    const std::size_t result = h(ec);
+    LIBCPP_ASSERT(result == static_cast<std::size_t>(i));
+    ((void)result); // Prevent unused warning
+}
+
+int main(int, char**)
+{
+    test(0);
+    test(2);
+    test(10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/error_condition.pass.cpp
new file mode 100644
index 0000000..bf016e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.hash/error_condition.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+#include <system_error>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void
+test(int i)
+{
+    typedef std::error_condition T;
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<H::argument_type, T>::value), "" );
+    static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    H h;
+    T ec(i, std::system_category());
+    const std::size_t result = h(ec);
+    LIBCPP_ASSERT(result == static_cast<std::size_t>(i));
+    ((void)result); // Prevent unused warning
+}
+
+int main(int, char**)
+{
+    test(0);
+    test(2);
+    test(10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code.pass.cpp
new file mode 100644
index 0000000..66137cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class system_error
+
+// system_error(error_code ec);
+
+// Test is slightly non-portable
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::system_error se(static_cast<int>(std::errc::not_a_directory),
+                         std::generic_category(), "some text");
+    assert(se.code() == std::make_error_code(std::errc::not_a_directory));
+    std::string what_message(se.what());
+    assert(what_message.find("Not a directory") != std::string::npos);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code_const_char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code_const_char_pointer.pass.cpp
new file mode 100644
index 0000000..bcb797e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code_const_char_pointer.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class system_error
+
+// system_error(error_code ec, const char* what_arg);
+
+// Test is slightly non-portable
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::string what_arg("test message");
+    std::system_error se(make_error_code(std::errc::not_a_directory), what_arg.c_str());
+    assert(se.code() == std::make_error_code(std::errc::not_a_directory));
+    std::string what_message(se.what());
+    assert(what_message.find(what_arg) != std::string::npos);
+    assert(what_message.find("Not a directory") != std::string::npos);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code_string.pass.cpp
new file mode 100644
index 0000000..a464084
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_error_code_string.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class system_error
+
+// system_error(error_code ec, const string& what_arg);
+
+// Test is slightly non-portable
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::string what_arg("test message");
+    std::system_error se(make_error_code(std::errc::not_a_directory), what_arg);
+    assert(se.code() == std::make_error_code(std::errc::not_a_directory));
+    std::string what_message(se.what());
+    assert(what_message.find(what_arg) != std::string::npos);
+    assert(what_message.find("Not a directory") != std::string::npos);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category.pass.cpp
new file mode 100644
index 0000000..0024f07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class system_error
+
+// system_error(int ev, const error_category& ecat);
+
+// Test is slightly non-portable
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::system_error se(static_cast<int>(std::errc::not_a_directory),
+                         std::generic_category());
+    assert(se.code() == std::make_error_code(std::errc::not_a_directory));
+    std::string what_message(se.what());
+    assert(what_message.find("Not a directory") != std::string::npos);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category_const_char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category_const_char_pointer.pass.cpp
new file mode 100644
index 0000000..521c359
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category_const_char_pointer.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class system_error
+
+// system_error(int ev, const error_category& ecat, const char* what_arg);
+
+// Test is slightly non-portable
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::string what_arg("test message");
+    std::system_error se(static_cast<int>(std::errc::not_a_directory),
+                         std::generic_category(), what_arg.c_str());
+    assert(se.code() == std::make_error_code(std::errc::not_a_directory));
+    std::string what_message(se.what());
+    assert(what_message.find(what_arg) != std::string::npos);
+    assert(what_message.find("Not a directory") != std::string::npos);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category_string.pass.cpp
new file mode 100644
index 0000000..2626fb8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.members/ctor_int_error_category_string.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <system_error>
+
+// class system_error
+
+// system_error(int ev, const error_category& ecat, const string& what_arg);
+
+// Test is slightly non-portable
+
+#include <system_error>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::string what_arg("test message");
+    std::system_error se(static_cast<int>(std::errc::not_a_directory),
+                         std::generic_category(), what_arg);
+    assert(se.code() == std::make_error_code(std::errc::not_a_directory));
+    std::string what_message(se.what());
+    assert(what_message.find(what_arg) != std::string::npos);
+    assert(what_message.find("Not a directory") != std::string::npos);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.overview/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.overview/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/diagnostics/syserr/syserr.syserr/syserr.syserr.overview/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp
new file mode 100644
index 0000000..8751bc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/algorithms/alg.search/search.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <algorithm>
+
+//   template<class ForwardIterator, class Searcher>
+//   ForwardIterator search(ForwardIterator first, ForwardIterator last,
+//                          const Searcher& searcher);
+//
+//      returns searcher.operator(first, last).first
+//
+
+#include <experimental/algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int searcher_called = 0;
+
+struct MySearcher {
+    template <typename Iterator>
+    std::pair<Iterator, Iterator>
+    operator() (Iterator b, Iterator e) const
+    {
+        ++searcher_called;
+        return std::make_pair(b, e);
+    }
+};
+
+
+int main(int, char**) {
+    typedef int * RI;
+    static_assert((std::is_same<RI, decltype(std::experimental::search(RI(), RI(), MySearcher()))>::value), "" );
+
+    RI it(nullptr);
+    assert(it == std::experimental::search(it, it, MySearcher()));
+    assert(searcher_called == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/default.pass.cpp
new file mode 100644
index 0000000..d5acb8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/default.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::experimental::boyer_moore_searcher<Iter2> s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    char ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    char ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void test_large_str() {
+    std::vector<signed char> data(257, 'a');
+    data[254] = 'b';
+    data[255] = 'b';
+    data[256] = 'b';
+    const signed char find[] = {'b', 'b', 'b'};
+    do_search(Iter1(data.data()), Iter1(data.data() + data.size()),
+              Iter2(find), Iter2(find + 3),
+              Iter1(data.data() + 254));
+}
+
+void test_custom_pred() {
+    std::string long_string(1024, '0');
+    auto searcher = std::experimental::make_boyer_moore_searcher(std::begin(long_string), std::end(long_string));
+    const char str[] = "1234";
+    auto ret = searcher(std::begin(str), std::end(str));
+    assert(ret.first == std::end(str));
+    assert(ret.second == std::end(str));
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+    test_large_str<random_access_iterator<const signed char*>, random_access_iterator<const signed char*>>();
+    test_custom_pred();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pass.cpp
new file mode 100644
index 0000000..5933b61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned /*max_count*/) {
+    std::experimental::boyer_moore_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>>
+          s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pred.pass.cpp
new file mode 100644
index 0000000..ef3315f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/hash.pred.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>,
+                 count_equal>
+          s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),     sa);
+
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/pred.pass.cpp
new file mode 100644
index 0000000..86aa18e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore/pred.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_searcher<Iter2,
+           typename std::hash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/default.pass.cpp
new file mode 100644
index 0000000..440bc05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/default.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2> s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    char ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    char ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pass.cpp
new file mode 100644
index 0000000..4677c3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned /*max_count*/) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>>
+          s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pred.pass.cpp
new file mode 100644
index 0000000..2191ad1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/hash.pred.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>,
+                 count_equal>
+          s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/pred.pass.cpp
new file mode 100644
index 0000000..b97f52b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.boyer_moore_horspool/pred.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::boyer_moore_horspool_searcher<Iter2,
+           typename std::hash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/default.pass.cpp
new file mode 100644
index 0000000..99cc8c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/default.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// default searcher
+// template<class _ForwardIterator, class _BinaryPredicate = equal_to<>>
+// class default_searcher {
+// public:
+//     default_searcher(_ForwardIterator __f, _ForwardIterator __l,
+//                             _BinaryPredicate __p = _BinaryPredicate())
+//         : __first_(__f), __last_(__l), __pred_(__p) {}
+//
+//     template <typename _ForwardIterator2>
+//     pair<_ForwardIterator2, _ForwardIterator2>
+//     operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const {
+//         return std::search(__f, __l, __first_, __last_, __pred_);
+//         }
+//
+// private:
+//     _ForwardIterator __first_;
+//     _ForwardIterator __last_;
+//     _BinaryPredicate __pred_;
+//     };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::experimental::default_searcher<Iter2> s{b2, e2};
+    assert(result == std::experimental::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+int main(int, char**) {
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/default.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/default.pred.pass.cpp
new file mode 100644
index 0000000..5901dfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/default.pred.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// default searcher
+// template<class _ForwardIterator, class _BinaryPredicate = equal_to<>>
+// class default_searcher {
+// public:
+//     default_searcher(_ForwardIterator __f, _ForwardIterator __l,
+//                             _BinaryPredicate __p = _BinaryPredicate())
+//         : __first_(__f), __last_(__l), __pred_(__p) {}
+//
+//     template <typename _ForwardIterator2>
+//     pair<_ForwardIterator2, _ForwardIterator2>
+//     operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const {
+//         return std::search(__f, __l, __first_, __last_, __pred_);
+//         }
+//
+// private:
+//     _ForwardIterator __first_;
+//     _ForwardIterator __last_;
+//     _BinaryPredicate __pred_;
+//     };
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::experimental::default_searcher<Iter2, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/func.searchers.default.creation/make_default_searcher.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/func.searchers.default.creation/make_default_searcher.pass.cpp
new file mode 100644
index 0000000..f5ec9ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/func.searchers.default.creation/make_default_searcher.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// template<class ForwardIterator, class BinaryPredicate = equal_to<>>
+// default_searcher<ForwardIterator, BinaryPredicate>
+// make_default_searcher(ForwardIterator pat_first, ForwardIterator pat_last,
+//                       BinaryPredicate pred = BinaryPredicate());
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    assert(result == std::experimental::search(b1, e1,
+        std::experimental::make_default_searcher(b2, e2)));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),     Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+int main(int, char**) {
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/func.searchers.default.creation/make_default_searcher.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/func.searchers.default.creation/make_default_searcher.pred.pass.cpp
new file mode 100644
index 0000000..196d028
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/func.searchers/func.searchers.default/func.searchers.default.creation/make_default_searcher.pred.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_NO_EXPERIMENTAL_DEPRECATION_WARNING_SEARCHERS
+
+// <functional>
+
+// template<class ForwardIterator, class BinaryPredicate = equal_to<>>
+// default_searcher<ForwardIterator, BinaryPredicate>
+// make_default_searcher(ForwardIterator pat_first, ForwardIterator pat_last,
+//                       BinaryPredicate pred = BinaryPredicate());
+
+
+#include <experimental/algorithm>
+#include <experimental/functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y)
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    count_equal::count = 0;
+    assert(result == std::experimental::search(b1, e1,
+        std::experimental::make_default_searcher(b2, e2)));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/func/header.functional.synop/includes.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/func/header.functional.synop/includes.pass.cpp
new file mode 100644
index 0000000..040f2bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/func/header.functional.synop/includes.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/functional>
+//
+//  has to include <functional>
+
+#include <experimental/functional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::function<int(int)> x;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.cons/ostream_joiner.cons.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.cons/ostream_joiner.cons.pass.cpp
new file mode 100644
index 0000000..af67bbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.cons/ostream_joiner.cons.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+
+// <experimental/iterator>
+//
+// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
+//   class ostream_joiner;
+//
+//     ostream_joiner(ostream_type& __os, _Delim&& __d);
+//     ostream_joiner(ostream_type& __os, const _Delim& __d);
+
+#include <experimental/iterator>
+#include <iostream>
+#include <string>
+
+#include "test_macros.h"
+
+namespace exper = std::experimental;
+
+int main(int, char**) {
+    const char eight = '8';
+    const std::string nine = "9";
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    const std::wstring ten = L"10";
+#endif
+    const int eleven = 11;
+
+    // Narrow streams w/rvalues
+    { exper::ostream_joiner<char>         oj(std::cout, '8'); }
+    { exper::ostream_joiner<std::string>  oj(std::cout, std::string("9")); }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<std::wstring> oj(std::cout, std::wstring(L"10")); }
+#endif
+    { exper::ostream_joiner<int>          oj(std::cout, 11); }
+
+    // Narrow streams w/lvalues
+    { exper::ostream_joiner<char>         oj(std::cout, eight); }
+    { exper::ostream_joiner<std::string>  oj(std::cout, nine); }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<std::wstring> oj(std::cout, ten); }
+#endif
+    { exper::ostream_joiner<int>          oj(std::cout, eleven); }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    // Wide streams w/rvalues
+    { exper::ostream_joiner<char, wchar_t>         oj(std::wcout, '8'); }
+    { exper::ostream_joiner<std::string, wchar_t>  oj(std::wcout, std::string("9")); }
+    { exper::ostream_joiner<std::wstring, wchar_t> oj(std::wcout, std::wstring(L"10")); }
+    { exper::ostream_joiner<int, wchar_t>          oj(std::wcout, 11); }
+
+    // Wide streams w/lvalues
+    { exper::ostream_joiner<char, wchar_t>         oj(std::wcout, eight); }
+    { exper::ostream_joiner<std::string, wchar_t>  oj(std::wcout, nine); }
+    { exper::ostream_joiner<std::wstring, wchar_t> oj(std::wcout, ten); }
+    { exper::ostream_joiner<int, wchar_t>          oj(std::wcout, eleven); }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.creation/make_ostream_joiner.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.creation/make_ostream_joiner.pass.cpp
new file mode 100644
index 0000000..05f798f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.creation/make_ostream_joiner.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+
+// <experimental/iterator>
+//
+// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
+//   class ostream_joiner;
+//
+//   template <class _CharT, class _Traits, class _Delim>
+//   ostream_joiner<typename decay<_Delim>::type, _CharT, _Traits>
+//   make_ostream_joiner(basic_ostream<_CharT, _Traits>& __os, _Delim && __d);
+//
+
+#include <experimental/iterator>
+#include <iostream>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+namespace exper = std::experimental;
+
+template <class Delim, class Iter, class CharT = char, class Traits = std::char_traits<CharT>>
+void test (Delim &&d, Iter first, Iter last, const CharT *expected ) {
+    std::basic_stringstream<CharT, Traits> sstream;
+    auto joiner = exper::make_ostream_joiner(sstream, d);
+    typedef exper::ostream_joiner<typename std::decay<Delim>::type, CharT, Traits> Joiner;
+    static_assert((std::is_same<decltype(joiner), Joiner>::value), "" );
+    while (first != last)
+        joiner = *first++;
+    assert(sstream.str() == expected);
+    }
+
+int main(int, char**) {
+    const char chars[] = "0123456789";
+    const int  ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
+
+//  There are more of these tests in another file.
+//  This is just to make sure that the ostream_joiner is created correctly
+    test('X', chars, chars+10, "0X1X2X3X4X5X6X7X8X9");
+    test('x', ints,  ints+10,  "10x11x12x13x14x15x16x17x18x19");
+    test("Z", chars, chars+10, "0Z1Z2Z3Z4Z5Z6Z7Z8Z9");
+    test("z", ints,  ints+10,  "10z11z12z13z14z15z16z17z18z19");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.assign.pass.cpp
new file mode 100644
index 0000000..7a193e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.assign.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+
+// <experimental/iterator>
+//
+// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
+//   class ostream_joiner;
+//
+//   template<typename T>
+//   ostream_joiner & operator=(const T&)
+//
+
+#include <experimental/iterator>
+#include <iostream>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct mutating_delimiter {
+    mutating_delimiter(char c = ' ') : c_(c) {}
+    char get () const { return c_++; }
+    mutable char c_;
+    };
+
+template<class _CharT, class _Traits>
+std::basic_ostream<_CharT, _Traits>&
+operator<<(std::basic_ostream<_CharT, _Traits>& os, const mutating_delimiter &d)
+{ return os << d.get(); }
+
+
+struct mutating_delimiter2 { // same as above, w/o the const and the mutable
+    mutating_delimiter2(char c = ' ') : c_(c) {}
+    char get () { return c_++; }
+    char c_;
+    };
+
+template<class _CharT, class _Traits>
+std::basic_ostream<_CharT, _Traits>&
+operator<<(std::basic_ostream<_CharT, _Traits>& os, mutating_delimiter2 &d)
+{ return os << d.get(); }
+
+
+namespace exper = std::experimental;
+
+template <class Delim, class Iter, class CharT = char, class Traits = std::char_traits<CharT>>
+void test (Delim &&d, Iter first, Iter last, const CharT *expected ) {
+    typedef exper::ostream_joiner<typename std::decay<Delim>::type, CharT, Traits> Joiner;
+
+    static_assert((std::is_copy_constructible<Joiner>::value == std::is_copy_constructible<typename std::decay<Delim>::type>::value), "" );
+    static_assert((std::is_move_constructible<Joiner>::value == std::is_move_constructible<typename std::decay<Delim>::type>::value), "" );
+    static_assert((std::is_copy_assignable<Joiner>   ::value == std::is_copy_assignable<typename std::decay<Delim>::type>   ::value), "" );
+    static_assert((std::is_move_assignable<Joiner>   ::value == std::is_move_assignable<typename std::decay<Delim>::type>   ::value), "" );
+
+    std::basic_stringstream<CharT, Traits> sstream;
+    Joiner joiner(sstream, d);
+    while (first != last)
+        *joiner++ = *first++;
+    assert(sstream.str() == expected);
+    }
+
+int main(int, char**) {
+{
+    const char chars[] = "0123456789";
+    const int  ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
+
+    test('X', chars, chars+10, "0X1X2X3X4X5X6X7X8X9");
+    test('x',  ints,  ints+10, "10x11x12x13x14x15x16x17x18x19");
+    test('X', cpp17_input_iterator<const char*>(chars),         cpp17_input_iterator<const char*>(chars+10),         "0X1X2X3X4X5X6X7X8X9");
+    test('x', cpp17_input_iterator<const int*>(ints),           cpp17_input_iterator<const int*>(ints+10),           "10x11x12x13x14x15x16x17x18x19");
+    test('X', forward_iterator<const char*>(chars),       forward_iterator<const char*>(chars+10),       "0X1X2X3X4X5X6X7X8X9");
+    test('x', forward_iterator<const int*>(ints),         forward_iterator<const int*>(ints+10),         "10x11x12x13x14x15x16x17x18x19");
+    test('X', random_access_iterator<const char*>(chars), random_access_iterator<const char*>(chars+10), "0X1X2X3X4X5X6X7X8X9");
+    test('x', random_access_iterator<const int*>(ints),   random_access_iterator<const int*>(ints+10),   "10x11x12x13x14x15x16x17x18x19");
+
+    test("Z", chars, chars+10, "0Z1Z2Z3Z4Z5Z6Z7Z8Z9");
+    test("z", ints,  ints+10,  "10z11z12z13z14z15z16z17z18z19");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<char, const char *, wchar_t> ('X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9");
+    test<char, const int *,  wchar_t> ('x',  ints,  ints+10, L"10x11x12x13x14x15x16x17x18x19");
+#endif
+    // TODO(var-const): uncomment when it becomes possible to instantiate a `basic_ostream` object with a sized
+    // character type (see https://llvm.org/PR53119).
+//  test<char, const char *, char16_t>('X', chars, chars+10, u"0X1X2X3X4X5X6X7X8X9");
+//  test<char, const int *,  char16_t>('x',  ints,  ints+10, u"10x11x12x13x14x15x16x17x18x19");
+//  test<char, const char *, char32_t>('X', chars, chars+10, U"0X1X2X3X4X5X6X7X8X9");
+//  test<char, const int *,  char32_t>('x',  ints,  ints+10, U"10x11x12x13x14x15x16x17x18x19");
+
+    test(mutating_delimiter(),  chars, chars+10, "0 1!2\"3#4$5%6&7'8(9");
+    test(mutating_delimiter2(), chars, chars+10, "0 1!2\"3#4$5%6&7'8(9");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    const wchar_t chars[] = L"0123456789";
+    const int  ints [] = { 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 };
+    test(L'X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9");
+    test(L'x',  ints,  ints+10, L"10x11x12x13x14x15x16x17x18x19");
+    test(L'X', cpp17_input_iterator<const wchar_t*>(chars),         cpp17_input_iterator<const wchar_t*>(chars+10),         L"0X1X2X3X4X5X6X7X8X9");
+    test(L'x', cpp17_input_iterator<const int*>(ints),              cpp17_input_iterator<const int*>(ints+10),              L"10x11x12x13x14x15x16x17x18x19");
+    test(L'X', forward_iterator<const wchar_t*>(chars),       forward_iterator<const wchar_t*>(chars+10),       L"0X1X2X3X4X5X6X7X8X9");
+    test(L'x', forward_iterator<const int*>(ints),            forward_iterator<const int*>(ints+10),            L"10x11x12x13x14x15x16x17x18x19");
+    test(L'X', random_access_iterator<const wchar_t*>(chars), random_access_iterator<const wchar_t*>(chars+10), L"0X1X2X3X4X5X6X7X8X9");
+    test(L'x', random_access_iterator<const int*>(ints),      random_access_iterator<const int*>(ints+10),      L"10x11x12x13x14x15x16x17x18x19");
+
+    test(L"Z", chars, chars+10, L"0Z1Z2Z3Z4Z5Z6Z7Z8Z9");
+    test(L"z", ints,  ints+10,  L"10z11z12z13z14z15z16z17z18z19");
+
+    test<char, const wchar_t *, wchar_t> ('X', chars, chars+10, L"0X1X2X3X4X5X6X7X8X9");
+    test<char, const int *,  wchar_t>    ('x',  ints,  ints+10, L"10x11x12x13x14x15x16x17x18x19");
+
+    test(mutating_delimiter(), chars, chars+10, L"0 1!2\"3#4$5%6&7'8(9");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.postincrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.postincrement.pass.cpp
new file mode 100644
index 0000000..055280d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.postincrement.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+
+// <experimental/iterator>
+//
+// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
+//   class ostream_joiner;
+//
+//   ostream_joiner & operator++(int) noexcept
+//     returns *this;
+
+#include <experimental/iterator>
+#include <iostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace exper = std::experimental;
+
+template <class Delim, class CharT, class Traits>
+void test ( exper::ostream_joiner<Delim, CharT, Traits> &oj ) {
+    static_assert((noexcept(oj++)), "" );
+    exper::ostream_joiner<Delim, CharT, Traits> &ret = oj++;
+    assert( &ret == &oj );
+    }
+
+int main(int, char**) {
+
+    { exper::ostream_joiner<char>         oj(std::cout, '8');                 test(oj); }
+    { exper::ostream_joiner<std::string>  oj(std::cout, std::string("9"));    test(oj); }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<std::wstring> oj(std::cout, std::wstring(L"10")); test(oj); }
+#endif
+    { exper::ostream_joiner<int>          oj(std::cout, 11);                  test(oj); }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<char, wchar_t>         oj(std::wcout, '8');                 test(oj); }
+    { exper::ostream_joiner<std::string, wchar_t>  oj(std::wcout, std::string("9"));    test(oj); }
+    { exper::ostream_joiner<std::wstring, wchar_t> oj(std::wcout, std::wstring(L"10")); test(oj); }
+    { exper::ostream_joiner<int, wchar_t>          oj(std::wcout, 11);                  test(oj); }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.pretincrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.pretincrement.pass.cpp
new file mode 100644
index 0000000..f7de32d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.pretincrement.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+
+// <experimental/iterator>
+//
+// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
+//   class ostream_joiner;
+//
+//   ostream_joiner & operator++() noexcept
+//     returns *this;
+
+#include <experimental/iterator>
+#include <iostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace exper = std::experimental;
+
+template <class Delim, class CharT, class Traits>
+void test ( exper::ostream_joiner<Delim, CharT, Traits> &oj ) {
+    static_assert((noexcept(++oj)), "" );
+    exper::ostream_joiner<Delim, CharT, Traits> &ret = ++oj;
+    assert( &ret == &oj );
+    }
+
+int main(int, char**) {
+
+    { exper::ostream_joiner<char>         oj(std::cout, '8');                 test(oj); }
+    { exper::ostream_joiner<std::string>  oj(std::cout, std::string("9"));    test(oj); }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<std::wstring> oj(std::cout, std::wstring(L"10")); test(oj); }
+#endif
+    { exper::ostream_joiner<int>          oj(std::cout, 11);                  test(oj); }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<char, wchar_t>         oj(std::wcout, '8');                 test(oj); }
+    { exper::ostream_joiner<std::string, wchar_t>  oj(std::wcout, std::string("9"));    test(oj); }
+    { exper::ostream_joiner<std::wstring, wchar_t> oj(std::wcout, std::wstring(L"10")); test(oj); }
+    { exper::ostream_joiner<int, wchar_t>          oj(std::wcout, 11);                  test(oj); }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.star.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.star.pass.cpp
new file mode 100644
index 0000000..4eb6da5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/iterator/ostream.joiner/ostream.joiner.ops/ostream_joiner.op.star.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+
+// <experimental/iterator>
+//
+// template <class _Delim, class _CharT = char, class _Traits = char_traits<_CharT>>
+//   class ostream_joiner;
+//
+//   ostream_joiner & operator*() noexcept
+//     returns *this;
+
+#include <experimental/iterator>
+#include <iostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace exper = std::experimental;
+
+template <class Delim, class CharT, class Traits>
+void test ( exper::ostream_joiner<Delim, CharT, Traits> &oj ) {
+    static_assert((noexcept(*oj)), "" );
+    exper::ostream_joiner<Delim, CharT, Traits> &ret = *oj;
+    assert( &ret == &oj );
+    }
+
+int main(int, char**) {
+
+    { exper::ostream_joiner<char>         oj(std::cout, '8');                 test(oj); }
+    { exper::ostream_joiner<std::string>  oj(std::cout, std::string("9"));    test(oj); }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<std::wstring> oj(std::cout, std::wstring(L"10")); test(oj); }
+#endif
+    { exper::ostream_joiner<int>          oj(std::cout, 11);                  test(oj); }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    { exper::ostream_joiner<char, wchar_t>         oj(std::wcout, '8');                 test(oj); }
+    { exper::ostream_joiner<std::string, wchar_t>  oj(std::wcout, std::string("9"));    test(oj); }
+    { exper::ostream_joiner<std::wstring, wchar_t> oj(std::wcout, std::wstring(L"10")); test(oj); }
+    { exper::ostream_joiner<int, wchar_t>          oj(std::wcout, 11);                  test(oj); }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp
new file mode 100644
index 0000000..94b94d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr explicit operator bool() const noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test() {
+  static_assert(std::is_nothrow_constructible<bool, C>::value, "");
+  static_assert(!std::is_convertible<C, bool>::value, "");
+  {
+    constexpr C c; ((void)c);
+    static_assert(bool(c) == false, "");
+  }
+  { // null case
+    const C c = {}; ((void)c);
+    ASSERT_NOEXCEPT(bool(c));
+    if (c)
+      assert(false);
+    else
+      assert(true);
+    assert(c.address() == nullptr);
+    assert(bool(c) == false);
+  }
+  { // non-null case
+    char dummy = 42;
+    C c = C::from_address((void*)&dummy);
+    assert(c.address() == &dummy);
+    assert(bool(c) == true);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<coro::coroutine_handle<>>();
+  do_test<coro::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/equal_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/equal_comp.pass.cpp
new file mode 100644
index 0000000..e8757ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/equal_comp.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// bool operator==(coroutine_handle<>, coroutine_handle<>) noexcept
+// bool operator!=(coroutine_handle<>, coroutine_handle<>) noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test(uintptr_t LHSVal, uintptr_t RHSVal) {
+  const C LHS = C::from_address(reinterpret_cast<void*>(LHSVal));
+  const C RHS = C::from_address(reinterpret_cast<void*>(RHSVal));
+  const bool ExpectIsEqual = (LHSVal == RHSVal);
+  assert((LHS == RHS) == ExpectIsEqual);
+  assert((RHS == LHS) == ExpectIsEqual);
+  assert((LHS != RHS) == !ExpectIsEqual);
+  assert((RHS != LHS) == !ExpectIsEqual);
+  {
+    static_assert(noexcept(LHS == RHS), "");
+    static_assert(noexcept(LHS != RHS), "");
+    ASSERT_SAME_TYPE(decltype(LHS == RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS != RHS), bool);
+  }
+}
+
+int main(int, char**)
+{
+  std::pair<uintptr_t, uintptr_t> const TestCases[] = {
+      {0, 0},
+      {16, 16},
+      {0, 16},
+      {16, 0}
+  };
+  for (auto& TC : TestCases) {
+    do_test<coro::coroutine_handle<>>(TC.first, TC.second);
+    do_test<coro::coroutine_handle<int>>(TC.first, TC.second);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/less_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/less_comp.pass.cpp
new file mode 100644
index 0000000..ce1d06c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/less_comp.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// bool operator<(coroutine_handle<>, coroutine_handle<>) noexcept
+// bool operator>(coroutine_handle<>, coroutine_handle<>) noexcept
+// bool operator>=(coroutine_handle<>, coroutine_handle<>) noexcept
+// bool operator<=(coroutine_handle<>, coroutine_handle<>) noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test(uintptr_t LHSVal, uintptr_t RHSVal) {
+  const C LHS = C::from_address(reinterpret_cast<void*>(LHSVal));
+  const C RHS = C::from_address(reinterpret_cast<void*>(RHSVal));
+  assert((LHS < RHS) == (LHSVal < RHSVal));
+  assert((RHS < LHS) == (RHSVal < LHSVal));
+  assert((LHS > RHS) == (LHSVal > RHSVal));
+  assert((RHS > LHS) == (RHSVal > LHSVal));
+  assert((LHS <= RHS) == (LHSVal <= RHSVal));
+  assert((RHS <= LHS) == (RHSVal <= LHSVal));
+  assert((LHS >= RHS) == (LHSVal >= RHSVal));
+  assert((RHS >= LHS) == (RHSVal >= LHSVal));
+  {
+    static_assert(noexcept(LHS < RHS), "");
+    static_assert(noexcept(LHS > RHS), "");
+    static_assert(noexcept(LHS <= RHS), "");
+    static_assert(noexcept(LHS >= RHS), "");
+    ASSERT_SAME_TYPE(decltype(LHS < RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS > RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS <= RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS >= RHS), bool);
+  }
+}
+
+int main(int, char**)
+{
+  std::pair<uintptr_t, uintptr_t> const TestCases[] = {
+      {0, 0},
+      {16, 16},
+      {0, 16},
+      {16, 0}
+  };
+  for (auto& TC : TestCases) {
+    do_test<coro::coroutine_handle<>>(TC.first, TC.second);
+    do_test<coro::coroutine_handle<int>>(TC.first, TC.second);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.completion/done.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.completion/done.pass.cpp
new file mode 100644
index 0000000..ecb34ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.completion/done.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// bool done() const
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class Promise>
+void do_test(coro::coroutine_handle<Promise> const& H) {
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.done()), bool);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.done());
+  }
+}
+
+int main(int, char**)
+{
+  do_test(coro::coroutine_handle<>{});
+  do_test(coro::coroutine_handle<int>{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/assign.pass.cpp
new file mode 100644
index 0000000..c0f5bb5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/assign.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// coroutine_handle& operator=(nullptr_t) noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test() {
+  int dummy = 42;
+  void* dummy_h = &dummy;
+  {
+    C c; ((void)c);
+    static_assert(std::is_nothrow_assignable<C&, std::nullptr_t>::value, "");
+    static_assert(!std::is_assignable<C&, void*>::value, "");
+  }
+  {
+    C c = C::from_address(dummy_h);
+    assert(c.address() == &dummy);
+    c = nullptr;
+    assert(c.address() == nullptr);
+    c = nullptr;
+    assert(c.address() == nullptr);
+  }
+  {
+    C c;
+    C& cr = (c = nullptr);
+    assert(&c == &cr);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<coro::coroutine_handle<>>();
+  do_test<coro::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/construct.pass.cpp
new file mode 100644
index 0000000..b525d79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/construct.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr coroutine_handle() noexcept
+// constexpr coroutine_handle(nullptr_t) noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test() {
+  {
+    constexpr C c;
+    static_assert(std::is_nothrow_default_constructible<C>::value, "");
+    static_assert(c.address() == nullptr, "");
+  }
+  {
+    constexpr C c(nullptr);
+    static_assert(std::is_nothrow_constructible<C, std::nullptr_t>::value, "");
+    static_assert(c.address() == nullptr, "");
+  }
+  {
+    C c;
+    assert(c.address() == nullptr);
+  }
+  {
+    C c(nullptr);
+    assert(c.address() == nullptr);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<coro::coroutine_handle<>>();
+  do_test<coro::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/address.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/address.pass.cpp
new file mode 100644
index 0000000..08dafd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/address.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr void* address() const noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test() {
+  {
+    constexpr C c; ((void)c);
+    static_assert(c.address() == nullptr, "");
+  }
+  {
+    const C c = {}; ((void)c);
+    ASSERT_NOEXCEPT(c.address());
+    ASSERT_SAME_TYPE(decltype(c.address()), void*);
+    assert(c.address() == nullptr);
+  }
+  {
+    char dummy = 42;
+    C c = C::from_address((void*)&dummy);
+    assert(c.address() == &dummy);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<coro::coroutine_handle<>>();
+  do_test<coro::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.fail.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.fail.cpp
new file mode 100644
index 0000000..d02ae2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.fail.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// static coroutine_handle from_address(void*) noexcept
+
+// Test that `from_address` is explicitly ill-formed when called with a typed
+// pointer. The user cannot possibly have a typed pointer to the coroutine.
+// FIXME: This behavior is an extension, and should upstreamed into the TS or
+// the test removed if the TS changes are rejected.
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+
+namespace coro = std::experimental;
+
+int main(int, char**)
+{
+  {
+    using H = coro::coroutine_handle<>;
+    // expected-error@experimental/coroutine:* 3 {{coroutine_handle<void>::from_address cannot be called with non-void pointers}}
+    H::from_address((int*)nullptr); // expected-note {{requested here}}
+    H::from_address((const void*)nullptr); // expected-note {{requested here}}
+    H::from_address((const char*)nullptr); // expected-note {{requested here}}
+  }
+  {
+    using H = coro::coroutine_handle<int>;
+    // expected-error-re@experimental/coroutine:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}coroutine_handle<promise_type>::from_address cannot be used with pointers to the coroutine's promise type; use 'from_promise' instead}}
+    H::from_address((const char*)nullptr); // expected-note {{requested here}}
+    // expected-error@experimental/coroutine:* 1 {{coroutine_handle<promise_type>::from_address cannot be called with non-void pointers}}
+    H::from_address((int*)nullptr); // expected-note {{requested here}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.pass.cpp
new file mode 100644
index 0000000..75052af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// static coroutine_handle from_address(void*) noexcept
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test() {
+  {
+    C c = C::from_address(nullptr);
+    static_assert(noexcept(C::from_address(nullptr)), "");
+    // FIXME: Should the return type not be 'C'?
+    static_assert(std::is_same<decltype(C::from_address(nullptr)), C>::value, "");
+    assert(c.address() == nullptr);
+  }
+  {
+    char dummy = 42;
+    C c = C::from_address((void*)&dummy);
+    assert(c.address() == &dummy);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<coro::coroutine_handle<>>();
+  do_test<coro::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.hash/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.hash/hash.pass.cpp
new file mode 100644
index 0000000..0fd56b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.hash/hash.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// namespace std {
+//  template <class P> struct hash<experimental::coroutine_handle<P>>;
+// }
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class C>
+void do_test(uintptr_t LHSVal, uintptr_t RHSVal) {
+  const size_t ExpectLHS = std::hash<void*>{}(reinterpret_cast<void*>(LHSVal));
+  const size_t ExpectRHS = std::hash<void*>{}(reinterpret_cast<void*>(RHSVal));
+  const C LHS = C::from_address(reinterpret_cast<void*>(LHSVal));
+  const C RHS = C::from_address(reinterpret_cast<void*>(RHSVal));
+  const std::hash<C> h;
+  // FIXME: libc++'s implementation hash's the result of LHS.address(), so we
+  // expect that value. However this is not required.
+  assert(h(LHS) == ExpectLHS);
+  assert(h(RHS) == ExpectRHS);
+  assert((h(LHS) == h(RHS)) == (LHSVal == RHSVal));
+  {
+    ASSERT_SAME_TYPE(decltype(h(LHS)), size_t);
+    ASSERT_NOEXCEPT(std::hash<C>{}(LHS));
+  }
+}
+
+int main(int, char**)
+{
+  std::pair<uintptr_t, uintptr_t> const TestCases[] = {
+      {0, 0},
+      {0, 8},
+      {8, 8},
+      {8, 16}
+  };
+  for (auto& TC : TestCases) {
+    do_test<coro::coroutine_handle<>>(TC.first, TC.second);
+    do_test<coro::coroutine_handle<int>>(TC.first, TC.second);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.noop/noop_coroutine.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.noop/noop_coroutine.pass.cpp
new file mode 100644
index 0000000..de53b0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.noop/noop_coroutine.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: ubsan
+
+// <experimental/coroutine>
+// struct noop_coroutine_promise;
+// using noop_coroutine_handle = coroutine_handle<noop_coroutine_promise>;
+// noop_coroutine_handle noop_coroutine() noexcept;
+
+#include <experimental/coroutine>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if TEST_HAS_BUILTIN(__builtin_coro_noop)
+
+namespace coro = std::experimental::coroutines_v1;
+
+
+static_assert(std::is_same<coro::coroutine_handle<coro::noop_coroutine_promise>, coro::noop_coroutine_handle>::value, "");
+static_assert(std::is_same<decltype(coro::noop_coroutine()), coro::noop_coroutine_handle>::value, "");
+
+// template <> struct coroutine_handle<noop_coroutine_promise> : coroutine_handle<>
+// {
+// // 18.11.2.7 noop observers
+// constexpr explicit operator bool() const noexcept;
+// constexpr bool done() const noexcept;
+
+// // 18.11.2.8 noop resumption
+// constexpr void operator()() const noexcept;
+// constexpr void resume() const noexcept;
+// constexpr void destroy() const noexcept;
+
+// // 18.11.2.9 noop promise access
+// noop_coroutine_promise& promise() const noexcept;
+
+// // 18.11.2.10 noop address
+// constexpr void* address() const noexcept;
+
+int main(int, char**)
+{
+  auto h = coro::noop_coroutine();
+  coro::coroutine_handle<> base = h;
+
+  assert(h);
+  assert(base);
+
+  assert(!h.done());
+  assert(!base.done());
+
+  h.resume();
+  h.destroy();
+  h();
+  static_assert(h.done() == false, "");
+  static_assert(h, "");
+
+  h.promise();
+  assert(h.address() == base.address());
+  assert(h.address() != nullptr);
+  assert(coro::coroutine_handle<>::from_address(h.address()) == base);
+
+  return 0;
+}
+
+#else
+
+int main(int, char**) { return 0; }
+
+#endif //  TEST_HAS_BUILTIN(__builtin_coro_noop)
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp
new file mode 100644
index 0000000..d493e1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise>
+// struct coroutine_handle<Promise>;
+
+// Promise& promise() const
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+struct MyCoro {
+  struct promise_type {
+    void unhandled_exception() {}
+    void return_void() {}
+    coro::suspend_never initial_suspend() { return {}; }
+    coro::suspend_never final_suspend() noexcept { return {}; }
+    MyCoro get_return_object() {
+      do_runtime_test();
+      return {};
+    }
+    void do_runtime_test() {
+      // Test that a coroutine_handle<const T> can be created from a const
+      // promise_type and that it represents the same coroutine as
+      // coroutine_handle<T>
+      using CH = coro::coroutine_handle<promise_type>;
+      using CCH = coro::coroutine_handle<const promise_type>;
+      const auto &cthis = *this;
+      CH h = CH::from_promise(*this);
+      CCH h2 = CCH::from_promise(*this);
+      CCH h3 = CCH::from_promise(cthis);
+      assert(&h.promise() == this);
+      assert(&h2.promise() == this);
+      assert(&h3.promise() == this);
+      assert(h.address() == h2.address());
+      assert(h2.address() == h3.address());
+    }
+  };
+};
+
+MyCoro do_runtime_test() {
+  co_await coro::suspend_never{};
+}
+
+template <class Promise>
+void do_test(coro::coroutine_handle<Promise>&& H) {
+
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.promise()), Promise&);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.promise());
+  }
+  {
+    auto const& CH = H;
+    ASSERT_SAME_TYPE(decltype(CH.promise()), Promise&);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(CH.promise());
+  }
+}
+
+int main(int, char**)
+{
+  do_test(coro::coroutine_handle<int>{});
+  do_test(coro::coroutine_handle<const int>{});
+  do_runtime_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/destroy.pass.cpp
new file mode 100644
index 0000000..3a27f2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/destroy.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// void destroy()
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class H>
+auto has_destroy_imp(H&& h, int) -> decltype(h.destroy(), std::true_type{});
+template <class H>
+auto has_destroy_imp(H&&, long) -> std::false_type;
+
+template <class H>
+constexpr bool has_destroy() {
+  return decltype(has_destroy_imp(std::declval<H>(), 0))::value;
+}
+
+template <class Promise>
+void do_test(coro::coroutine_handle<Promise>&& H) {
+  using HType = coro::coroutine_handle<Promise>;
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.destroy()), void);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.destroy());
+    static_assert(has_destroy<HType&>(), "");
+    static_assert(has_destroy<HType&&>(), "");
+  }
+  {
+    static_assert(!has_destroy<HType const&>(), "");
+    static_assert(!has_destroy<HType const&&>(), "");
+  }
+}
+
+int main(int, char**)
+{
+  do_test(coro::coroutine_handle<>{});
+  do_test(coro::coroutine_handle<int>{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/resume.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/resume.pass.cpp
new file mode 100644
index 0000000..77d8d63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/resume.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// void operator()()
+// void resume()
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+
+template <class H>
+auto has_resume_imp(H&& h, int) -> decltype(h.resume(), std::true_type{});
+template <class H>
+auto has_resume_imp(H&&, long) -> std::false_type;
+
+template <class H>
+constexpr bool has_resume() {
+  return decltype(has_resume_imp(std::declval<H>(), 0))::value;
+}
+
+
+template <class H>
+auto has_call_operator_imp(H&& h, int) -> decltype(h(), std::true_type{});
+template <class H>
+auto has_call_operator_imp(H&&, long) -> std::false_type;
+
+template <class H>
+constexpr bool has_call_operator() {
+  return decltype(has_call_operator_imp(std::declval<H>(), 0))::value;
+}
+
+template <class Promise>
+void do_test(coro::coroutine_handle<Promise>&& H) {
+  using HType = coro::coroutine_handle<Promise>;
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.resume()), void);
+    ASSERT_SAME_TYPE(decltype(H()), void);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.resume());
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H());
+    static_assert(has_resume<HType&>(), "");
+    static_assert(has_resume<HType&&>(), "");
+    static_assert(has_call_operator<HType&>(), "");
+    static_assert(has_call_operator<HType&&>(), "");
+  }
+  {
+    static_assert(!has_resume<HType const&>(), "");
+    static_assert(!has_resume<HType const&&>(), "");
+    static_assert(!has_call_operator<HType const&>(), "");
+    static_assert(!has_call_operator<HType const&&>(), "");
+  }
+}
+
+int main(int, char**)
+{
+  do_test(coro::coroutine_handle<>{});
+  do_test(coro::coroutine_handle<int>{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/void_handle.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/void_handle.pass.cpp
new file mode 100644
index 0000000..1f48408
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.handle/void_handle.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+struct A {
+  using promise_type = A*;
+};
+
+struct B {};
+struct C {};
+
+namespace std { namespace experimental {
+  template <>
+  struct coroutine_traits<::A, int> {
+    using promise_type = int*;
+  };
+  template <class ...Args>
+  struct coroutine_traits<::B, Args...> {
+    using promise_type = B*;
+  };
+  template <>
+  struct coroutine_traits<::C> {
+    using promise_type = void;
+  };
+}}
+
+template <class Expect, class T, class ...Args>
+void check_type() {
+  using P = typename coro::coroutine_traits<T, Args...>::promise_type ;
+  static_assert(std::is_same<P, Expect>::value, "");
+};
+
+int main(int, char**)
+{
+  check_type<A*, A>();
+  check_type<int*, A, int>();
+  check_type<B*, B>();
+  check_type<void, C>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.traits/promise_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.traits/promise_type.pass.cpp
new file mode 100644
index 0000000..dd95493
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.traits/promise_type.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+template <class T, class = typename T::promise_type>
+constexpr bool has_promise_type(int) { return true; }
+template <class>
+constexpr bool has_promise_type(long) { return false; }
+template <class T>
+constexpr bool has_promise_type() { return has_promise_type<T>(0); }
+
+struct A {
+  using promise_type = A*;
+};
+
+struct B {};
+struct C {};
+struct D {
+private:
+  using promise_type = void;
+};
+struct E {};
+
+namespace std { namespace experimental {
+  template <>
+  struct coroutine_traits<::A, int> {
+    using promise_type = int*;
+  };
+  template <class ...Args>
+  struct coroutine_traits<::B, Args...> {
+    using promise_type = B*;
+  };
+  template <>
+  struct coroutine_traits<::C> {
+    using promise_type = void;
+  };
+}}
+
+template <class Expect, class T, class ...Args>
+void check_type() {
+  using Traits = coro::coroutine_traits<T, Args...>;
+  static_assert(has_promise_type<Traits>(), "");
+  static_assert(std::is_same<typename Traits::promise_type, Expect>::value, "");
+}
+
+template <class T, class ...Args>
+void check_no_type() {
+  using Traits = coro::coroutine_traits<T, Args...>;
+  static_assert(!has_promise_type<Traits>(), "");
+}
+
+int main(int, char**)
+{
+  {
+    check_type<A*, A>();
+    check_type<int*, A, int>();
+    check_type<B*, B>();
+    check_type<void, C>();
+  }
+  {
+    check_no_type<D>();
+    check_no_type<E>();
+    check_no_type<C, int>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
new file mode 100644
index 0000000..dd5673b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+using SuspendT = std::experimental::coroutines_v1::suspend_always;
+
+constexpr bool check_suspend_constexpr() {
+  SuspendT s;
+  const SuspendT scopy(s); (void)scopy;
+  SuspendT smove(std::move(s)); (void)smove;
+  s = scopy;
+  s = std::move(smove);
+  return true;
+}
+
+int main(int, char**)
+{
+  using H = coro::coroutine_handle<>;
+  using S = SuspendT;
+  H h{};
+  S s{};
+  S const& cs = s;
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_ready()), "");
+    static_assert(std::is_same<decltype(s.await_ready()), bool>::value, "");
+    assert(s.await_ready() == false);
+    assert(cs.await_ready() == false);
+  }
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_suspend(h)), "");
+    static_assert(std::is_same<decltype(s.await_suspend(h)), void>::value, "");
+    s.await_suspend(h);
+    cs.await_suspend(h);
+  }
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_resume()), "");
+    static_assert(std::is_same<decltype(s.await_resume()), void>::value, "");
+    s.await_resume();
+    cs.await_resume();
+  }
+  {
+    static_assert(std::is_nothrow_default_constructible<S>::value, "");
+    static_assert(std::is_nothrow_copy_constructible<S>::value, "");
+    static_assert(std::is_nothrow_move_constructible<S>::value, "");
+    static_assert(std::is_nothrow_copy_assignable<S>::value, "");
+    static_assert(std::is_nothrow_move_assignable<S>::value, "");
+    static_assert(std::is_trivially_copyable<S>::value, "");
+    static_assert(check_suspend_constexpr(), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
new file mode 100644
index 0000000..8d59d6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+namespace coro = std::experimental;
+
+using SuspendT = std::experimental::coroutines_v1::suspend_never;
+
+constexpr bool check_suspend_constexpr() {
+  SuspendT s;
+  const SuspendT scopy(s); (void)scopy;
+  SuspendT smove(std::move(s)); (void)smove;
+  s = scopy;
+  s = std::move(smove);
+  return true;
+}
+
+
+int main(int, char**)
+{
+  using H = coro::coroutine_handle<>;
+  using S = SuspendT;
+  H h{};
+  S s{};
+  S const& cs = s;
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_ready()), "");
+    static_assert(std::is_same<decltype(s.await_ready()), bool>::value, "");
+    assert(s.await_ready() == true);
+    assert(cs.await_ready() == true);
+  }
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_suspend(h)), "");
+    static_assert(std::is_same<decltype(s.await_suspend(h)), void>::value, "");
+    s.await_suspend(h);
+    cs.await_suspend(h);
+  }
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_resume()), "");
+    static_assert(std::is_same<decltype(s.await_resume()), void>::value, "");
+    s.await_resume();
+    cs.await_resume();
+  }
+  {
+    static_assert(std::is_nothrow_default_constructible<S>::value, "");
+    static_assert(std::is_nothrow_copy_constructible<S>::value, "");
+    static_assert(std::is_nothrow_move_constructible<S>::value, "");
+    static_assert(std::is_nothrow_copy_assignable<S>::value, "");
+    static_assert(std::is_nothrow_move_assignable<S>::value, "");
+    static_assert(std::is_trivially_copyable<S>::value, "");
+    static_assert(check_suspend_constexpr(), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/await_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/await_result.pass.cpp
new file mode 100644
index 0000000..2b4dac2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/await_result.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+using namespace std::experimental;
+
+struct coro_t {
+  struct promise_type {
+    coro_t get_return_object() {
+      coroutine_handle<promise_type>{};
+      return {};
+    }
+    suspend_never initial_suspend() { return {}; }
+    suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    static void unhandled_exception() {}
+  };
+};
+
+struct B {
+  ~B() {}
+  bool await_ready() { return true; }
+  B await_resume() { return {}; }
+  template <typename F> void await_suspend(F) {}
+};
+
+
+struct A {
+  ~A() {}
+  bool await_ready() { return true; }
+  int await_resume() { return 42; }
+  template <typename F> void await_suspend(F) {}
+};
+
+int last_value = -1;
+void set_value(int x) {
+  last_value = x;
+}
+
+coro_t f(int n) {
+  if (n == 0) {
+    set_value(0);
+    co_return;
+  }
+  int val = co_await A{};
+  ((void)val);
+  set_value(42);
+}
+
+coro_t g() { B val = co_await B{}; }
+
+int main(int, char**) {
+  last_value = -1;
+  f(0);
+  assert(last_value == 0);
+  f(1);
+  assert(last_value == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp
new file mode 100644
index 0000000..611ee25
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// See https://llvm.org/PR33271
+// UNSUPPORTED: ubsan
+
+#include <experimental/coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+using namespace std::experimental;
+
+struct coro_t {
+  struct promise_type {
+    coro_t get_return_object() {
+      return coroutine_handle<promise_type>::from_promise(*this);
+    }
+    suspend_never initial_suspend() { return {}; }
+    suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+  coro_t(coroutine_handle<promise_type> hh) : h(hh) {}
+  coroutine_handle<promise_type> h;
+};
+
+struct NoSuspend {
+  bool await_ready() { return false; }
+  void await_resume() {}
+  template <typename F> bool await_suspend(F) { return false; }
+};
+
+struct DoSuspend {
+  bool await_ready() { return false; }
+  void await_resume() {}
+  template <typename F> bool await_suspend(F) { return true; }
+};
+
+bool f_started, f_resumed = false;
+coro_t f() {
+  f_started = true;
+  co_await DoSuspend{};
+  f_resumed = true;
+}
+
+bool g_started, g_resumed = false;
+coro_t g() {
+  g_started = true;
+  co_await NoSuspend{};
+  g_resumed = true;
+}
+
+int main(int, char**) {
+  assert(!f_started && !f_resumed && !g_started && !g_resumed);
+  auto fret = f();
+  assert(f_started && !f_resumed);
+  fret.h.destroy();
+  assert(f_started && !f_resumed);
+  g();
+  assert(g_started && g_resumed);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/expected.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/expected.pass.cpp
new file mode 100644
index 0000000..59618e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/expected.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+using namespace std::experimental;
+
+struct error_tag { };
+
+template <typename T, typename Error = int>
+struct expected {
+
+  struct Data {
+    Data() : val(), error() { }
+    Data(T v, Error e) : val(v), error(e) { }
+    T val;
+    Error error;
+  };
+  std::shared_ptr<Data> data;
+
+  expected(T val) : data(std::make_shared<Data>(val, Error())) {}
+  expected(error_tag, Error error) : data(std::make_shared<Data>(T(), error)) {}
+  expected(std::shared_ptr<Data> p) : data(p) {}
+
+  struct promise_type {
+    std::shared_ptr<Data> data;
+    expected get_return_object() { data = std::make_shared<Data>(); return {data}; }
+    suspend_never initial_suspend() { return {}; }
+    suspend_never final_suspend() noexcept { return {}; }
+    void return_value(T v) { data->val = v; data->error = {}; }
+    void unhandled_exception() {}
+  };
+
+  bool await_ready() { return !data->error; }
+  T await_resume() { return data->val; }
+  void await_suspend(coroutine_handle<promise_type> h) {
+    h.promise().data->error = data->error;
+    h.destroy();
+  }
+
+  T const& value() { return data->val; }
+  Error const& error() { return data->error; }
+};
+
+expected<int> g() { return {0}; }
+expected<int> h() { return {error_tag{}, 42}; }
+
+extern "C" void print(int);
+
+bool f1_started, f1_resumed = false;
+expected<int> f1() {
+  f1_started = true;
+  (void)(co_await g());
+  f1_resumed = true;
+  co_return 100;
+}
+
+bool f2_started, f2_resumed = false;
+expected<int> f2() {
+  f2_started = true;
+  (void)(co_await h());
+  f2_resumed = true;
+  co_return 200;
+}
+
+int main(int, char**) {
+  auto c1 = f1();
+  assert(f1_started && f1_resumed);
+  assert(c1.value() == 100);
+  assert(c1.error() == 0);
+
+  auto c2 = f2();
+  assert(f2_started && !f2_resumed);
+  assert(c2.value() == 0);
+  assert(c2.error() == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp
new file mode 100644
index 0000000..de1b054
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+using namespace std::experimental;
+
+int alive = 0;
+int ctor_called = 0;
+int dtor_called = 0;
+void reset() {
+  assert(alive == 0);
+  alive = 0;
+  ctor_called = 0;
+  dtor_called = 0;
+}
+struct Noisy {
+  Noisy() { ++alive; ++ctor_called; }
+  ~Noisy() { --alive; ++dtor_called; }
+#if TEST_STD_VER > 14
+  Noisy(Noisy const&) = delete;
+#else
+  // FIXME: This test depends on copy elision taking place in C++14
+  // (pre-C++17 guaranteed copy elision)
+  Noisy(Noisy const&);
+#endif
+};
+
+struct Bug {
+  bool await_ready() { return true; }
+  void await_suspend(std::experimental::coroutine_handle<>) {}
+  Noisy await_resume() { return {}; }
+};
+struct coro2 {
+  struct promise_type {
+    suspend_never initial_suspend() { return{}; }
+    suspend_never final_suspend() noexcept { return {}; }
+    coro2 get_return_object() { return{}; }
+    void return_void() {}
+    Bug yield_value(int) { return {}; }
+    void unhandled_exception() {}
+  };
+};
+
+// Checks that destructors are correctly invoked for the object returned by
+// coawait.
+coro2 a() {
+  reset();
+  {
+    auto x = co_await Bug{};
+    assert(alive == 1);
+    assert(ctor_called == 1);
+    assert(dtor_called == 0);
+    ((void)x);
+  }
+  assert(alive == 0);
+  assert(dtor_called == 1);
+}
+
+coro2 b() {
+  reset();
+  {
+    (void)(co_await Bug{});
+    assert(ctor_called == 1);
+    assert(dtor_called == 1);
+    assert(alive == 0);
+  }
+  assert(ctor_called == 1);
+  assert(dtor_called == 1);
+  assert(alive == 0);
+
+}
+
+coro2 c() {
+  reset();
+  {
+    auto x = co_yield 42;
+    assert(alive == 1);
+    assert(ctor_called == 1);
+    assert(dtor_called == 0);
+  }
+  assert(alive == 0);
+  assert(ctor_called == 1);
+  assert(dtor_called == 1);
+}
+
+coro2 d() {
+  reset();
+  {
+    (void)(co_yield 42);
+    assert(ctor_called == 1);
+    assert(dtor_called == 1);
+    assert(alive == 0);
+  }
+  assert(alive == 0);
+  assert(ctor_called == 1);
+  assert(dtor_called == 1);
+}
+
+int main(int, char**) {
+  a();
+  b();
+  c();
+  d();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/generator.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/generator.pass.cpp
new file mode 100644
index 0000000..2a05e8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/generator.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// See https://llvm.org/PR33271
+// UNSUPPORTED: ubsan
+
+#include <experimental/coroutine>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <typename Ty> struct generator {
+  struct promise_type {
+    Ty current_value;
+    std::experimental::suspend_always yield_value(Ty value) {
+      this->current_value = value;
+      return {};
+    }
+    std::experimental::suspend_always initial_suspend() { return {}; }
+    std::experimental::suspend_always final_suspend() noexcept { return {}; }
+    generator get_return_object() { return generator{this}; };
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+
+  struct iterator {
+    std::experimental::coroutine_handle<promise_type> _Coro;
+    bool _Done;
+
+    iterator(std::experimental::coroutine_handle<promise_type> Coro, bool Done)
+        : _Coro(Coro), _Done(Done) {}
+
+    iterator &operator++() {
+      _Coro.resume();
+      _Done = _Coro.done();
+      return *this;
+    }
+
+    bool operator==(iterator const &_Right) const {
+      return _Done == _Right._Done;
+    }
+
+    bool operator!=(iterator const &_Right) const { return !(*this == _Right); }
+
+    Ty const &operator*() const { return _Coro.promise().current_value; }
+
+    Ty const *operator->() const { return &(operator*()); }
+  };
+
+  iterator begin() {
+    p.resume();
+    return {p, p.done()};
+  }
+
+  iterator end() { return {p, true}; }
+
+  generator(generator &&rhs) : p(rhs.p) { rhs.p = nullptr; }
+
+  ~generator() {
+    if (p)
+      p.destroy();
+  }
+
+private:
+  explicit generator(promise_type *p)
+      : p(std::experimental::coroutine_handle<promise_type>::from_promise(*p)) {}
+
+  std::experimental::coroutine_handle<promise_type> p;
+};
+
+struct minig {
+  struct promise_type {
+    int current_value;
+    std::experimental::suspend_always yield_value(int value) {
+      this->current_value = value;
+      return {};
+    }
+    std::experimental::suspend_always initial_suspend() { return {}; }
+    std::experimental::suspend_always final_suspend() noexcept { return {}; }
+    minig get_return_object() { return minig{this}; };
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+
+  bool move_next() {
+    p.resume();
+    return !p.done();
+  }
+  int current_value() { return p.promise().current_value; }
+
+  minig(minig &&rhs) : p(rhs.p) { rhs.p = nullptr; }
+
+  ~minig() {
+    if (p)
+      p.destroy();
+  }
+
+private:
+  explicit minig(promise_type *p)
+      : p(std::experimental::coroutine_handle<promise_type>::from_promise(*p)) {}
+
+  std::experimental::coroutine_handle<promise_type> p;
+};
+
+
+minig mini_count(int n) {
+  for (int i = 0; i < n; i++) {
+    co_yield i;
+  }
+}
+
+generator<int> count(int n) {
+  for (int i = 0; i < n; ++i)
+    co_yield i;
+}
+
+generator<int> range(int from, int n) {
+  for (int i = from; i < n; ++i)
+    co_yield i;
+}
+
+void test_count() {
+  const std::vector<int> expect = {0, 1, 2, 3, 4};
+  std::vector<int> got;
+  for (auto x : count(5))
+    got.push_back(x);
+  assert(expect == got);
+}
+
+void test_range() {
+  int sum = 0;
+   for (auto v: range(1, 20))
+      sum += v;
+   assert(sum == 190);
+}
+
+void test_mini_generator() {
+  int sum = 0;
+  auto g = mini_count(5);
+  while (g.move_next()) {
+     sum += g.current_value();
+  }
+  assert(sum == 10);
+}
+
+int main(int, char**) {
+  test_count();
+  test_range();
+  test_mini_generator();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/go.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/go.pass.cpp
new file mode 100644
index 0000000..3e323ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/go.pass.cpp
@@ -0,0 +1,176 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+using namespace std::experimental;
+
+bool cancel = false;
+
+struct goroutine
+{
+  static int const N = 10;
+  static int count;
+  static coroutine_handle<> stack[N];
+
+  static void schedule(coroutine_handle<>& rh)
+  {
+    assert(count < N);
+    stack[count++] = rh;
+    rh = nullptr;
+  }
+
+  ~goroutine() {}
+
+  static void go(goroutine) {}
+
+  static void run_one()
+  {
+    assert(count > 0);
+    stack[--count]();
+  }
+
+  struct promise_type
+  {
+    suspend_never initial_suspend() {
+      return {};
+    }
+    suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    goroutine get_return_object() {
+      return{};
+    }
+    void unhandled_exception() {}
+  };
+};
+int goroutine::count;
+coroutine_handle<> goroutine::stack[N];
+
+coroutine_handle<goroutine::promise_type> workaround;
+
+class channel;
+
+struct push_awaiter {
+  channel* ch;
+  bool await_ready() {return false; }
+  void await_suspend(coroutine_handle<> rh);
+  void await_resume() {}
+};
+
+struct pull_awaiter {
+  channel * ch;
+
+  bool await_ready();
+  void await_suspend(coroutine_handle<> rh);
+  int await_resume();
+};
+
+class channel
+{
+  using T = int;
+
+  friend struct push_awaiter;
+  friend struct pull_awaiter;
+
+  T const* pvalue = nullptr;
+  coroutine_handle<> reader = nullptr;
+  coroutine_handle<> writer = nullptr;
+public:
+  push_awaiter push(T const& value)
+  {
+    assert(pvalue == nullptr);
+    assert(!writer);
+    pvalue = &value;
+
+    return { this };
+  }
+
+  pull_awaiter pull()
+  {
+    assert(!reader);
+
+    return { this };
+  }
+
+  void sync_push(T const& value)
+  {
+    assert(!pvalue);
+    pvalue = &value;
+    assert(reader);
+    reader();
+    assert(!pvalue);
+    reader = nullptr;
+  }
+
+  auto sync_pull()
+  {
+    while (!pvalue) goroutine::run_one();
+    auto result = *pvalue;
+    pvalue = nullptr;
+    if (writer)
+    {
+      auto wr = writer;
+      writer = nullptr;
+      wr();
+    }
+    return result;
+  }
+};
+
+void push_awaiter::await_suspend(coroutine_handle<> rh)
+{
+  ch->writer = rh;
+  if (ch->reader) goroutine::schedule(ch->reader);
+}
+
+
+bool pull_awaiter::await_ready() {
+  return !!ch->writer;
+}
+void pull_awaiter::await_suspend(coroutine_handle<> rh) {
+  ch->reader = rh;
+}
+int pull_awaiter::await_resume() {
+  auto result = *ch->pvalue;
+  ch->pvalue = nullptr;
+  if (ch->writer) {
+    //goroutine::schedule(ch->writer);
+    auto wr = ch->writer;
+    ch->writer = nullptr;
+    wr();
+  }
+  return result;
+}
+
+goroutine pusher(channel& left, channel& right)
+{
+  for (;;) {
+    auto val = co_await left.pull();
+    co_await right.push(val + 1);
+  }
+}
+
+const int N = 100;
+channel* c = new channel[N + 1];
+
+int main(int, char**) {
+  for (int i = 0; i < N; ++i)
+    goroutine::go(pusher(c[i], c[i + 1]));
+
+  c[0].sync_push(0);
+  int result = c[N].sync_pull();
+
+  assert(result == 100);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp
new file mode 100644
index 0000000..dd8c5ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <experimental/coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+using namespace std::experimental;
+
+// This file tests, multishot, movable std::function like thing using coroutine
+// for compile-time type erasure and unerasure.
+template <typename R> struct func {
+  struct Input {R a, b;};
+
+  struct promise_type {
+    Input* I;
+    R result;
+    func get_return_object() { return {this}; }
+    suspend_always initial_suspend() { return {}; }
+    suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    template <typename F>
+    suspend_always yield_value(F&& f) {
+      result = f(I->a, I->b);
+      return {};
+    }
+    void unhandled_exception() {}
+  };
+
+  R operator()(Input I) {
+    h.promise().I = &I;
+    h.resume();
+    R result = h.promise().result;
+    return result;
+  };
+
+  func() {}
+  func(func &&rhs) : h(rhs.h) { rhs.h = nullptr; }
+  func(func const &) = delete;
+
+  func &operator=(func &&rhs) {
+    if (this != &rhs) {
+      if (h)
+        h.destroy();
+      h = rhs.h;
+      rhs.h = nullptr;
+    }
+    return *this;
+  }
+
+  template <typename F> static func Create(F f) {
+    for (;;) {
+      co_yield f;
+    }
+  }
+
+  template <typename F> func(F f) : func(Create(f)) {}
+
+  ~func() {
+    if (h)
+      h.destroy();
+  }
+
+private:
+  func(promise_type *promise)
+      : h(coroutine_handle<promise_type>::from_promise(*promise)) {}
+  coroutine_handle<promise_type> h;
+};
+
+int Do(int acc, int n, func<int> f) {
+  for (int i = 0; i < n; ++i)
+    acc = f({acc, i});
+  return acc;
+}
+
+int main(int, char**) {
+  int result = Do(1, 10, [](int a, int b) {return a + b;});
+  assert(result == 46);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp
new file mode 100644
index 0000000..105ca8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// XFAIL: libcpp-has-debug-mode
+
+#include <experimental/coroutine>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+using namespace std::experimental;
+
+// This file tests, one shot, movable std::function like thing using coroutine
+// for compile-time type erasure and unerasure.
+
+template <typename R> struct func {
+  struct promise_type {
+    R result;
+    func get_return_object() { return {this}; }
+    suspend_always initial_suspend() { return {}; }
+    suspend_always final_suspend() noexcept { return {}; }
+    void return_value(R v) { result = v; }
+    void unhandled_exception() {}
+  };
+
+  R operator()() {
+    h.resume();
+    R result = h.promise().result;
+    h.destroy();
+    h = nullptr;
+    return result;
+  };
+
+  func() {}
+  func(func &&rhs) : h(rhs.h) { rhs.h = nullptr; }
+  func(func const &) = delete;
+
+  func &operator=(func &&rhs) {
+    if (this != &rhs) {
+      if (h)
+        h.destroy();
+      h = rhs.h;
+      rhs.h = nullptr;
+    }
+    return *this;
+  }
+
+  template <typename F> static func Create(F f) { co_return f(); }
+
+  template <typename F> func(F f) : func(Create(f)) {}
+
+  ~func() {
+    if (h)
+      h.destroy();
+  }
+
+private:
+  func(promise_type *promise)
+      : h(coroutine_handle<promise_type>::from_promise(*promise)) {}
+  coroutine_handle<promise_type> h;
+};
+
+std::vector<int> yielded_values = {};
+int yield(int x) { yielded_values.push_back(x); return x + 1; }
+float fyield(int x) { yielded_values.push_back(x); return static_cast<float>(x + 2); }
+
+void Do1(func<int> f) { yield(f()); }
+void Do2(func<double> f) { yield(static_cast<int>(f())); }
+
+int main(int, char**) {
+  Do1([] { return yield(43); });
+  assert((yielded_values == std::vector<int>{43, 44}));
+
+  yielded_values = {};
+  Do2([] { return fyield(44); });
+  assert((yielded_values == std::vector<int>{44, 46}));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/includes.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/includes.pass.cpp
new file mode 100644
index 0000000..ea39576
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/includes.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <experimental/coroutine>
+
+// Test that <experimental/coroutine> includes <new>
+
+#include <experimental/coroutine>
+
+int main(int, char**) {
+  // std::nothrow is not implicitly defined by the compiler when the include is
+  // missing, unlike other parts of <new>. Therefore we use std::nothrow to
+  // test for #include <new>
+
+  (void)std::nothrow;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/lit.local.cfg
new file mode 100644
index 0000000..223de62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/language.support/support.coroutines/lit.local.cfg
@@ -0,0 +1,8 @@
+# If the compiler doesn't support coroutines mark all of the tests under
+# this directory as unsupported. Otherwise add the required `-fcoroutines-ts`
+# flag.
+if 'fcoroutines-ts' not in config.available_features:
+  config.unsupported = True
+else:
+  config.test_format.addCompileFlags(config, '-fcoroutines-ts')
+  config.test_format.addCompileFlags(config, '-Wno-coroutine')
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/experimental/lit.local.cfg
new file mode 100644
index 0000000..5e2c632
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/lit.local.cfg
@@ -0,0 +1,3 @@
+# Disable all of the experimental tests if the correct feature is not available.
+if 'c++experimental' not in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/assign.pass.cpp
new file mode 100644
index 0000000..e966632
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator operator=(polymorphic_allocator const &) = delete
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> T;
+    static_assert(!std::is_copy_assignable<T>::value, "");
+    static_assert(!std::is_move_assignable<T>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/copy.pass.cpp
new file mode 100644
index 0000000..4fb34b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/copy.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator<T>::polymorphic_allocator(polymorphic_allocator const &);
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> A1;
+    {
+        static_assert(
+            std::is_copy_constructible<A1>::value, ""
+          );
+        static_assert(
+            std::is_move_constructible<A1>::value, ""
+          );
+    }
+    // copy
+    {
+        A1 const a((ex::memory_resource*)42);
+        A1 const a2(a);
+        assert(a.resource() == a2.resource());
+    }
+    // move
+    {
+        A1 a((ex::memory_resource*)42);
+        A1 a2(std::move(a));
+        assert(a.resource() == a2.resource());
+        assert(a2.resource() == (ex::memory_resource*)42);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/default.pass.cpp
new file mode 100644
index 0000000..b4faa68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/default.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator<T>::polymorphic_allocator() noexcept
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    {
+        static_assert(
+            std::is_nothrow_default_constructible<ex::polymorphic_allocator<void>>::value
+          , "Must me nothrow default constructible"
+          );
+    }
+    {
+        // test that the allocator gets its resource from get_default_resource
+        TestResource R1(42);
+        ex::set_default_resource(&R1);
+
+        typedef ex::polymorphic_allocator<void> A;
+        A const a;
+        assert(a.resource() == &R1);
+
+        ex::set_default_resource(nullptr);
+        A const a2;
+        assert(a.resource() == &R1);
+        assert(a2.resource() == ex::new_delete_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/memory_resource_convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/memory_resource_convert.pass.cpp
new file mode 100644
index 0000000..e72b496
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/memory_resource_convert.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator<T>::polymorphic_allocator(memory_resource *)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    {
+        typedef ex::polymorphic_allocator<void> A;
+        static_assert(
+            std::is_convertible<decltype(nullptr), A>::value
+          , "Must be convertible"
+          );
+        static_assert(
+            std::is_convertible<ex::memory_resource *, A>::value
+          , "Must be convertible"
+          );
+    }
+    {
+        typedef ex::polymorphic_allocator<void> A;
+        TestResource R;
+        A const a(&R);
+        assert(a.resource() == &R);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/other_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/other_alloc.pass.cpp
new file mode 100644
index 0000000..b56e479
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.ctor/other_alloc.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U>
+// polymorphic_allocator<T>::polymorphic_allocator(polymorphic_allocator<U> const &);
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> A1;
+    typedef ex::polymorphic_allocator<char> A2;
+    { // Test that the conversion is implicit and noexcept.
+        static_assert(
+            std::is_convertible<A1 const &, A2>::value, ""
+          );
+        static_assert(
+            std::is_convertible<A2 const &, A1>::value, ""
+          );
+        static_assert(
+            std::is_nothrow_constructible<A1, A2 const &>::value, ""
+          );
+        static_assert(
+            std::is_nothrow_constructible<A2, A1 const &>::value, ""
+          );
+    }
+    // copy other type
+    {
+        A1 const a((ex::memory_resource*)42);
+        A2 const a2(a);
+        assert(a.resource() == a2.resource());
+        assert(a2.resource() == (ex::memory_resource*)42);
+    }
+    {
+        A1 a((ex::memory_resource*)42);
+        A2 const a2(std::move(a));
+        assert(a.resource() == a2.resource());
+        assert(a2.resource() == (ex::memory_resource*)42);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.eq/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.eq/equal.pass.cpp
new file mode 100644
index 0000000..f198c52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.eq/equal.pass.cpp
@@ -0,0 +1,146 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator;
+
+// template <class T, class U>
+// bool operator==(
+//      polymorphic_allocator<T> const &
+//    , polymorphic_allocator<U> const &) noexcept
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> A1;
+    typedef ex::polymorphic_allocator<int> A2;
+    // check return types
+    {
+        A1 const a1;
+        A2 const a2;
+        static_assert(std::is_same<decltype(a1 == a2), bool>::value, "");
+        static_assert(noexcept(a1 == a2), "");
+    }
+    // equal same type (different resource)
+    {
+        TestResource d1(1);
+        TestResource d2(1);
+        A1 const a1(&d1);
+        A1 const a2(&d2);
+
+        assert(a1 == a2);
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        d1.reset();
+
+        assert(a2 == a1);
+        assert(d1.checkIsEqualCalledEq(0));
+        assert(d2.checkIsEqualCalledEq(1));
+    }
+    // equal same type (same resource)
+    {
+        TestResource d1;
+        A1 const a1(&d1);
+        A1 const a2(&d1);
+
+        assert(a1 == a2);
+        assert(d1.checkIsEqualCalledEq(0));
+
+        assert(a2 == a1);
+        assert(d1.checkIsEqualCalledEq(0));
+    }
+    // equal different type (different resource)
+    {
+        TestResource d1(42);
+        TestResource d2(42);
+        A1 const a1(&d1);
+        A2 const a2(&d2);
+
+        assert(a1 == a2);
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        assert(a2 == a1);
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(1));
+
+    }
+    // equal different type (same resource)
+    {
+        TestResource d1(42);
+        A1 const a1(&d1);
+        A2 const a2(&d1);
+
+        assert(a1 == a2);
+        assert(d1.checkIsEqualCalledEq(0));
+
+        assert(a2 == a1);
+        assert(d1.checkIsEqualCalledEq(0));
+
+    }
+    // not equal same type
+    {
+        TestResource d1(1);
+        TestResource d2(2);
+        A1 const a1(&d1);
+        A1 const a2(&d2);
+
+        assert(!(a1 == a2));
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        d1.reset();
+
+        assert(!(a2 == a1));
+        assert(d1.checkIsEqualCalledEq(0));
+        assert(d2.checkIsEqualCalledEq(1));
+
+    }
+    // not equal different types
+    {
+        TestResource  d1;
+        TestResource1 d2;
+        A1 const a1(&d1);
+        A2 const a2(&d2);
+
+        assert(!(a1 == a2));
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        d1.reset();
+
+        assert(!(a2 == a1));
+        assert(d1.checkIsEqualCalledEq(0));
+        assert(d2.checkIsEqualCalledEq(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.eq/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.eq/not_equal.pass.cpp
new file mode 100644
index 0000000..14d53e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.eq/not_equal.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator;
+
+// template <class T>
+// bool operator!=(
+//      polymorphic_allocator<T> const &
+//    , polymorphic_allocator<T> const &) noexcept
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> A1;
+    typedef ex::polymorphic_allocator<int> A2;
+    // check return types
+    {
+        A1 const a1;
+        A2 const a2;
+        static_assert(std::is_same<decltype(a1 != a2), bool>::value, "");
+        static_assert(noexcept(a1 != a2), "");
+    }
+    // not equal same type (different resource)
+    {
+        TestResource d1(1);
+        TestResource d2(2);
+        A1 const a1(&d1);
+        A1 const a2(&d2);
+
+        assert(a1 != a2);
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        d1.reset();
+
+        assert(a2 != a1);
+        assert(d1.checkIsEqualCalledEq(0));
+        assert(d2.checkIsEqualCalledEq(1));
+    }
+    // equal same type (same resource)
+    {
+        TestResource d1;
+        A1 const a1(&d1);
+        A1 const a2(&d1);
+
+        assert(!(a1 != a2));
+        assert(d1.checkIsEqualCalledEq(0));
+
+        assert(!(a2 != a1));
+        assert(d1.checkIsEqualCalledEq(0));
+    }
+    // equal same type
+    {
+        TestResource d1(1);
+        TestResource d2(1);
+        A1 const a1(&d1);
+        A1 const a2(&d2);
+
+        assert(!(a1 != a2));
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        d1.reset();
+
+        assert(!(a2 != a1));
+        assert(d1.checkIsEqualCalledEq(0));
+        assert(d2.checkIsEqualCalledEq(1));
+
+    }
+    // not equal different types
+    {
+        TestResource  d1;
+        TestResource1 d2;
+        A1 const a1(&d1);
+        A2 const a2(&d2);
+
+        assert(a1 != a2);
+        assert(d1.checkIsEqualCalledEq(1));
+        assert(d2.checkIsEqualCalledEq(0));
+
+        d1.reset();
+
+        assert(a2 != a1);
+        assert(d1.checkIsEqualCalledEq(0));
+        assert(d2.checkIsEqualCalledEq(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/allocate.pass.cpp
new file mode 100644
index 0000000..297235e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/allocate.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::allocate(size_t n)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <limits>
+#include <memory>
+#include <exception>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+
+namespace ex = std::experimental::pmr;
+
+template <size_t S, size_t Align>
+void testForSizeAndAlign() {
+    struct T { alignas(Align) char data[S]; };
+    TestResource R;
+    ex::polymorphic_allocator<T> a(&R);
+
+    for (int N = 1; N <= 5; ++N) {
+        auto ret = a.allocate(N);
+        assert(R.checkAlloc(ret, N * sizeof(T), alignof(T)));
+
+        a.deallocate(ret, N);
+        R.reset();
+    }
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <size_t S>
+void testAllocForSizeThrows() {
+    struct T { char data[S]; };
+    using Alloc = ex::polymorphic_allocator<T>;
+    using Traits = std::allocator_traits<Alloc>;
+    NullResource R;
+    Alloc a(&R);
+
+    // Test that allocating exactly the max size does not throw.
+    size_t maxSize = Traits::max_size(a);
+    try {
+        a.allocate(maxSize);
+    } catch (...) {
+        assert(false);
+    }
+
+    size_t sizeTypeMax = std::numeric_limits<std::size_t>::max();
+    if (maxSize != sizeTypeMax)
+    {
+        // Test that allocating size_t(~0) throws bad_array_new_length.
+        try {
+            a.allocate(sizeTypeMax);
+            assert(false);
+        } catch (std::bad_array_new_length const&) {
+        }
+
+        // Test that allocating even one more than the max size does throw.
+        size_t overSize = maxSize + 1;
+        try {
+            a.allocate(overSize);
+            assert(false);
+        } catch (std::bad_array_new_length const&) {
+        }
+    }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+int main(int, char**)
+{
+    {
+        ex::polymorphic_allocator<int> a;
+        static_assert(std::is_same<decltype(a.allocate(0)), int*>::value, "");
+        static_assert(!noexcept(a.allocate(0)), "");
+    }
+    {
+        constexpr std::size_t MA = alignof(std::max_align_t);
+        testForSizeAndAlign<1, 1>();
+        testForSizeAndAlign<1, 2>();
+        testForSizeAndAlign<1, MA>();
+        testForSizeAndAlign<2, 2>();
+        testForSizeAndAlign<73, alignof(void*)>();
+        testForSizeAndAlign<73, MA>();
+        testForSizeAndAlign<13, MA>();
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testAllocForSizeThrows<1>();
+        testAllocForSizeThrows<2>();
+        testAllocForSizeThrows<4>();
+        testAllocForSizeThrows<8>();
+        testAllocForSizeThrows<16>();
+        testAllocForSizeThrows<73>();
+        testAllocForSizeThrows<13>();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair.pass.cpp
new file mode 100644
index 0000000..9d653a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int constructed = 0;
+
+struct default_constructible
+{
+    default_constructible() : x(42)  { ++constructed; }
+    int x{0};
+};
+
+int main(int, char**)
+{
+    // pair<default_constructible, default_constructible> as T()
+    {
+        typedef default_constructible T;
+        typedef std::pair<T, T> P;
+        typedef ex::polymorphic_allocator<void> A;
+        P * ptr = (P*)std::malloc(sizeof(P));
+        A a;
+        a.construct(ptr);
+        assert(constructed == 2);
+        assert(ptr->first.x == 42);
+        assert(ptr->second.x == 42);
+        std::free(ptr);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp
new file mode 100644
index 0000000..dbfddf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class P1, class P2, class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<P1, P2>*, pair<U1, U2> const&)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+namespace ex = std::experimental::pmr;
+
+
+template <class UA1, class UA2, class TT, class UU>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect,
+            std::pair<TT, UU> const& p)
+{
+    using P = std::pair<UA1, UA2>;
+    TestResource R;
+    ex::memory_resource * M = &R;
+    ex::polymorphic_allocator<P> A(M);
+    P * ptr = (P*)std::malloc(sizeof(P));
+    P * ptr2 =  (P*)std::malloc(sizeof(P));
+
+    // UNDER TEST //
+    A.construct(ptr, p);
+
+    A.construct(ptr2, std::piecewise_construct,
+                std::forward_as_tuple(p.first),
+                std::forward_as_tuple(p.second));
+    // ------- //
+
+    bool tres = checkConstruct<decltype((p.first))>(ptr->first, TExpect, M) &&
+                checkConstructionEquiv(ptr->first, ptr2->first);
+
+    bool ures = checkConstruct<decltype((p.second))>(ptr->second, UExpect, M) &&
+                checkConstructionEquiv(ptr->second, ptr2->second);
+
+    A.destroy(ptr);
+    std::free(ptr);
+    A.destroy(ptr2);
+    std::free(ptr2);
+    return tres && ures;
+
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_uses_allocator(std::pair<TT, UU> const& p)
+{
+    {
+        using T = NotUsesAllocator<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, p)));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, 1>;
+        using U = UsesAllocatorV2<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, p)));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, 1>;
+        using U = UsesAllocatorV3<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, p)));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocArg, UA_None, p)));
+    }
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_not_uses_allocator(std::pair<TT, UU> const& p)
+{
+    {
+        using T = NotUsesAllocator<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, p)));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, 1>;
+        using U = UsesAllocatorV2<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, p)));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, 1>;
+        using U = UsesAllocatorV3<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, p)));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, p)));
+    }
+}
+
+template <class Tp>
+struct Print;
+
+int main(int, char**)
+{
+    using ERT = std::experimental::erased_type;
+    using PMR = ex::memory_resource*;
+    using PMA = ex::polymorphic_allocator<char>;
+    {
+        int x = 42;
+        int y = 42;
+        const std::pair<int, int&> p(x, y);
+        test_pmr_uses_allocator<ERT>(p);
+        test_pmr_not_uses_allocator<PMR>(p);
+        test_pmr_uses_allocator<PMA>(p);
+    }
+    {
+        int x = 42;
+        int y = 42;
+        const std::pair<int&, int&&> p(x, std::move(y));
+        test_pmr_uses_allocator<ERT>(p);
+        test_pmr_not_uses_allocator<PMR>(p);
+        test_pmr_uses_allocator<PMA>(p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_rvalue.pass.cpp
new file mode 100644
index 0000000..0d90844
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_rvalue.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class P1, class P2, class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<P1, P2>*, pair<U1, U2> &&)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+namespace ex = std::experimental::pmr;
+
+
+
+template <class UA1, class UA2, class TT, class UU>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect,
+            std::pair<TT, UU>&& p)
+{
+    using P = std::pair<UA1, UA2>;
+    TestResource R;
+    ex::memory_resource * M = &R;
+    ex::polymorphic_allocator<P> A(M);
+    P * ptr  = A.allocate(2);
+    P * ptr2 = ptr + 1;
+
+    // UNDER TEST //
+    A.construct(ptr, std::move(p));
+
+    A.construct(ptr2, std::piecewise_construct,
+                std::forward_as_tuple(std::forward<TT>(p.first)),
+                std::forward_as_tuple(std::forward<UU>(p.second)));
+    // ------- //
+
+    bool tres = checkConstruct<TT&&>(ptr->first, TExpect, M) &&
+                checkConstructionEquiv(ptr->first, ptr2->first);
+
+    bool ures = checkConstruct<UU&&>(ptr->second, UExpect, M) &&
+                checkConstructionEquiv(ptr->second, ptr2->second);
+
+    A.destroy(ptr);
+    A.destroy(ptr2);
+    A.deallocate(ptr, 2);
+    return tres && ures;
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_uses_allocator(std::pair<TT, UU>&& p)
+{
+    {
+        using T = NotUsesAllocator<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, 1>;
+        using U = UsesAllocatorV2<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, std::move(p))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, 1>;
+        using U = UsesAllocatorV3<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, std::move(p))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocArg, UA_None, std::move(p))));
+    }
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_not_uses_allocator(std::pair<TT, UU>&& p)
+{
+    {
+        using T = NotUsesAllocator<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, 1>;
+        using U = UsesAllocatorV2<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, 1>;
+        using U = UsesAllocatorV3<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+    }
+}
+
+int main(int, char**)
+{
+    using ERT = std::experimental::erased_type;
+    using PMR = ex::memory_resource*;
+    using PMA = ex::polymorphic_allocator<char>;
+    {
+        int x = 42;
+        int y = 42;
+        std::pair<int&, int&&> p(x, std::move(y));
+        test_pmr_uses_allocator<ERT>(std::move(p));
+        test_pmr_not_uses_allocator<PMR>(std::move(p));
+        test_pmr_uses_allocator<PMA>(std::move(p));
+    }
+    {
+        int x = 42;
+        int y = 42;
+        std::pair<int&&, int&> p(std::move(x), y);
+        test_pmr_uses_allocator<ERT>(std::move(p));
+        test_pmr_not_uses_allocator<PMR>(std::move(p));
+        test_pmr_uses_allocator<PMA>(std::move(p));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_values.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_values.pass.cpp
new file mode 100644
index 0000000..6641c93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_pair_values.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class P1, class P2, class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<P1, P2>*, U1&&, U2&&)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+namespace ex = std::experimental::pmr;
+
+
+template <class UA1, class UA2, class TT, class UU>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect,
+            TT&& t, UU&& u)
+{
+    using P = std::pair<UA1, UA2>;
+    TestResource R;
+    ex::memory_resource * M = &R;
+    ex::polymorphic_allocator<P> A(M);
+    P * ptr = (P*)std::malloc(sizeof(P));
+    P * ptr2 = (P*)std::malloc(sizeof(P));
+
+    // UNDER TEST //
+    A.construct(ptr, std::forward<TT>(t), std::forward<UU>(u));
+    A.construct(ptr2, std::piecewise_construct,
+                      std::forward_as_tuple(std::forward<TT>(t)),
+                      std::forward_as_tuple(std::forward<UU>(u)));
+    // ------- //
+
+    bool tres = checkConstruct<TT&&>(ptr->first, TExpect, M) &&
+                checkConstructionEquiv(ptr->first, ptr2->first);
+
+    bool ures = checkConstruct<UU&&>(ptr->second, UExpect, M) &&
+                checkConstructionEquiv(ptr->second, ptr2->second);
+
+    A.destroy(ptr);
+    A.destroy(ptr2);
+    std::free(ptr);
+    std::free(ptr2);
+    return tres && ures;
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_uses_allocator(TT&& t, UU&& u)
+{
+    {
+        using T = NotUsesAllocator<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, 1>;
+        using U = UsesAllocatorV2<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocArg, UA_AllocLast,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, 1>;
+        using U = UsesAllocatorV3<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocLast, UA_AllocArg,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_AllocArg, UA_None,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_not_uses_allocator(TT&& t, UU&& u)
+{
+    {
+        using T = NotUsesAllocator<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, 1>;
+        using U = UsesAllocatorV2<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, 1>;
+        using U = UsesAllocatorV3<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, 1>;
+        using U = NotUsesAllocator<Alloc, 1>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::forward<TT>(t), std::forward<UU>(u))));
+    }
+}
+
+int main(int, char**)
+{
+    using ERT = std::experimental::erased_type;
+    using PMR = ex::memory_resource*;
+    using PMA = ex::polymorphic_allocator<char>;
+    {
+        int x = 42;
+        int y = 42;
+        test_pmr_uses_allocator<ERT>(x, std::move(y));
+        test_pmr_not_uses_allocator<PMR>(x, std::move(y));
+        test_pmr_uses_allocator<PMA>(x, std::move(y));
+    }
+    {
+        int x = 42;
+        const int y = 42;
+        test_pmr_uses_allocator<ERT>(std::move(x), y);
+        test_pmr_not_uses_allocator<PMR>(std::move(x), y);
+        test_pmr_uses_allocator<PMA>(std::move(x), y);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp
new file mode 100644
index 0000000..0a5b250
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*, piecewise_construct_t
+//                                          tuple<Args1...>, tuple<Args2...>)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+namespace ex = std::experimental::pmr;
+
+template <class T, class U, class ...TTuple, class ...UTuple>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect,
+            std::tuple<TTuple...> ttuple, std::tuple<UTuple...> utuple)
+{
+    using P = std::pair<T, U>;
+    TestResource R;
+    ex::memory_resource * M = &R;
+    ex::polymorphic_allocator<P> A(M);
+    P * ptr = A.allocate(1);
+
+    // UNDER TEST //
+    A.construct(ptr, std::piecewise_construct, std::move(ttuple), std::move(utuple));
+    // ------- //
+    bool tres = checkConstruct<TTuple&&...>(ptr->first, TExpect, M);
+    bool ures = checkConstruct<UTuple&&...>(ptr->second, UExpect, M);
+
+    A.destroy(ptr);
+    A.deallocate(ptr, 1);
+    return tres && ures;
+}
+
+template <class Alloc, class ...TTypes, class ...UTypes>
+void test_pmr_uses_allocator(std::tuple<TTypes...> ttuple, std::tuple<UTypes...> utuple)
+{
+    {
+        using T = NotUsesAllocator<Alloc, sizeof...(TTypes)>;
+        using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, sizeof...(TTypes)>;
+        using U = UsesAllocatorV2<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_AllocArg, UA_AllocLast,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, sizeof...(TTypes)>;
+        using U = UsesAllocatorV3<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_AllocLast, UA_AllocArg,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, sizeof...(TTypes)>;
+        using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_AllocArg, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+}
+
+template <class Alloc, class ...TTypes, class ...UTypes>
+void test_pmr_not_uses_allocator(std::tuple<TTypes...> ttuple, std::tuple<UTypes...> utuple)
+{
+    {
+        using T = NotUsesAllocator<Alloc, sizeof...(TTypes)>;
+        using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, sizeof...(TTypes)>;
+        using U = UsesAllocatorV2<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, sizeof...(TTypes)>;
+        using U = UsesAllocatorV3<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, sizeof...(TTypes)>;
+        using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+        assert((doTest<T, U>(UA_None, UA_None,
+                             std::move(ttuple), std::move(utuple))));
+    }
+}
+
+int main(int, char**)
+{
+    using ERT = std::experimental::erased_type;
+    using PMR = ex::memory_resource*;
+    using PMA = ex::polymorphic_allocator<char>;
+    {
+        std::tuple<> t1;
+        test_pmr_uses_allocator<ERT>(t1, t1);
+        test_pmr_not_uses_allocator<PMR>(t1, t1);
+        test_pmr_uses_allocator<PMA>(t1, t1);
+    }
+    {
+        std::tuple<int> t1(42);
+        std::tuple<> t2;
+        test_pmr_uses_allocator<ERT>(t1, t2);
+        test_pmr_uses_allocator<ERT>(t2, t1);
+        test_pmr_not_uses_allocator<PMR>(t1, t2);
+        test_pmr_not_uses_allocator<PMR>(t2, t1);
+        test_pmr_uses_allocator<PMA>(t1, t2);
+        test_pmr_uses_allocator<PMA>(t2, t1);
+    }
+    {
+        std::tuple<int> t1(42);
+        int x = 55;
+        double dx = 42.42;
+        std::tuple<int&, double&&> t2(x, std::move(dx));
+        test_pmr_uses_allocator<ERT>(           t1, std::move(t2));
+        test_pmr_uses_allocator<ERT>(std::move(t2),            t1);
+        test_pmr_not_uses_allocator<PMR>(           t1, std::move(t2));
+        test_pmr_not_uses_allocator<PMR>(std::move(t2),            t1);
+        test_pmr_uses_allocator<PMA>(           t1, std::move(t2));
+        test_pmr_uses_allocator<PMA>(std::move(t2),            t1);
+    }
+    {
+        void* xptr = nullptr;
+        long y = 4242;
+        std::tuple<int, long const&, void*&> t1(42, y, xptr);
+        int x = 55;
+        double dx = 42.42;
+        const char* s = "hello World";
+        std::tuple<int&, double&&, const char*> t2(x, std::move(dx), s);
+        test_pmr_uses_allocator<ERT>(           t1, std::move(t2));
+        test_pmr_uses_allocator<ERT>(std::move(t2),            t1);
+        test_pmr_not_uses_allocator<PMR>(           t1, std::move(t2));
+        test_pmr_not_uses_allocator<PMR>(std::move(t2),            t1);
+        test_pmr_uses_allocator<PMA>(           t1, std::move(t2));
+        test_pmr_uses_allocator<PMA>(std::move(t2),            t1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair_evil.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair_evil.pass.cpp
new file mode 100644
index 0000000..af30ef0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_piecewise_pair_evil.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*, piecewise_construct_t
+//                                          tuple<Args1...>, tuple<Args2...>)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+template <class T>
+struct EvilAlloc {
+    explicit EvilAlloc() : inner_(ex::null_memory_resource()) {}
+
+    EvilAlloc(ex::polymorphic_allocator<T> & a) : inner_(a) {}
+    EvilAlloc(ex::polymorphic_allocator<T> && a) : inner_(a) {}
+    EvilAlloc(ex::polymorphic_allocator<T> const & a) = delete;
+    EvilAlloc(ex::polymorphic_allocator<T> const && a) = delete;
+
+    using value_type = T;
+    template <class U> EvilAlloc(EvilAlloc<U> const & rhs) : inner_(rhs.inner_) {}
+
+    ex::polymorphic_allocator<T> inner_;
+};
+
+struct WidgetV0 {
+    WidgetV0(int v) : value_(v) {}
+
+    bool holds(int v, const ex::polymorphic_allocator<char>&) const {
+        return value_ == v;
+    }
+private:
+    int value_;
+};
+
+struct WidgetV1 {
+    using allocator_type = EvilAlloc<char>;
+
+    WidgetV1(int v) : value_(v), alloc_() {}
+    WidgetV1(std::allocator_arg_t, EvilAlloc<char> a, int v) : value_(v), alloc_(a) {}
+
+    bool holds(int v, const ex::polymorphic_allocator<char>& a) const {
+        return value_ == v && alloc_.inner_ == a;
+    }
+private:
+    int value_;
+    EvilAlloc<char> alloc_;
+};
+
+struct WidgetV2 {
+    using allocator_type = EvilAlloc<char>;
+
+    WidgetV2(int v) : value_(v), alloc_() {}
+    WidgetV2(int v, EvilAlloc<char> a) : value_(v), alloc_(a) {}
+
+    bool holds(int v, ex::polymorphic_allocator<char> a) const {
+        return value_ == v && alloc_.inner_ == a;
+    }
+private:
+    int value_;
+    EvilAlloc<char> alloc_;
+};
+
+struct WidgetV3 {
+    using allocator_type = EvilAlloc<char>;
+
+    WidgetV3(int v) : value_(v), alloc_() {}
+    WidgetV3(std::allocator_arg_t, EvilAlloc<char> a, int v) : value_(v), alloc_(a) {}
+    WidgetV3(int v, EvilAlloc<char> a) : value_(v), alloc_(a) {}
+
+    bool holds(int v, ex::polymorphic_allocator<char> a) const {
+        return value_ == v && alloc_.inner_ == a;
+    }
+private:
+    int value_;
+    EvilAlloc<char> alloc_;
+};
+
+static_assert(std::uses_allocator<WidgetV1, EvilAlloc<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV2, EvilAlloc<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV3, EvilAlloc<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV1, ex::polymorphic_allocator<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV2, ex::polymorphic_allocator<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV3, ex::polymorphic_allocator<char>>::value, "");
+
+template<class W1, class W2>
+void test_evil()
+{
+    using PMA = ex::polymorphic_allocator<char>;
+    PMA pma(ex::new_delete_resource());
+    {
+        using Pair = std::pair<W1, W2>;
+        void *where = std::malloc(sizeof (Pair));
+        Pair *p = (Pair *)where;
+        pma.construct(p, std::piecewise_construct, std::make_tuple(42), std::make_tuple(42));
+        assert(p->first.holds(42, pma));
+        assert(p->second.holds(42, pma));
+        pma.destroy(p);
+        std::free(where);
+    }
+}
+
+int main(int, char**)
+{
+    test_evil<WidgetV0, WidgetV0>();
+    test_evil<WidgetV0, WidgetV1>();
+    test_evil<WidgetV0, WidgetV2>();
+    test_evil<WidgetV0, WidgetV3>();
+    test_evil<WidgetV1, WidgetV0>();
+    test_evil<WidgetV1, WidgetV1>();
+    test_evil<WidgetV1, WidgetV2>();
+    test_evil<WidgetV1, WidgetV3>();
+    test_evil<WidgetV2, WidgetV0>();
+    test_evil<WidgetV2, WidgetV1>();
+    test_evil<WidgetV2, WidgetV2>();
+    test_evil<WidgetV2, WidgetV3>();
+    test_evil<WidgetV3, WidgetV0>();
+    test_evil<WidgetV3, WidgetV1>();
+    test_evil<WidgetV3, WidgetV2>();
+    test_evil<WidgetV3, WidgetV3>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_types.pass.cpp
new file mode 100644
index 0000000..08716b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/construct_types.pass.cpp
@@ -0,0 +1,237 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U, class ...Args>
+// void polymorphic_allocator<T>::construct(U *, Args &&...)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+namespace ex = std::experimental::pmr;
+
+template <class T>
+struct PMATest {
+    TestResource R;
+    ex::polymorphic_allocator<T> A;
+    T* ptr;
+    bool constructed;
+
+    PMATest() : A(&R), ptr(A.allocate(1)), constructed(false) {}
+
+    template <class ...Args>
+    void construct(Args&&... args) {
+        A.construct(ptr, std::forward<Args>(args)...);
+        constructed = true;
+    }
+
+    ~PMATest() {
+        if (constructed) A.destroy(ptr);
+        A.deallocate(ptr, 1);
+    }
+};
+
+template <class T, class ...Args>
+bool doTest(UsesAllocatorType UAExpect, Args&&... args)
+{
+    PMATest<T> TH;
+    // UNDER TEST //
+    TH.construct(std::forward<Args>(args)...);
+    return checkConstruct<Args&&...>(*TH.ptr, UAExpect, &TH.R);
+    // ------- //
+}
+
+
+template <class T, class ...Args>
+bool doTestUsesAllocV0(Args&&... args)
+{
+    PMATest<T> TH;
+    // UNDER TEST //
+    TH.construct(std::forward<Args>(args)...);
+    return checkConstruct<Args&&...>(*TH.ptr, UA_None);
+    // -------- //
+}
+
+
+template <class T, class EAlloc, class ...Args>
+bool doTestUsesAllocV1(EAlloc const& ealloc, Args&&... args)
+{
+    PMATest<T> TH;
+    // UNDER TEST //
+    TH.construct(std::allocator_arg, ealloc, std::forward<Args>(args)...);
+    return checkConstruct<Args&&...>(*TH.ptr, UA_AllocArg, ealloc);
+    // -------- //
+}
+
+template <class T, class EAlloc, class ...Args>
+bool doTestUsesAllocV2(EAlloc const& ealloc, Args&&... args)
+{
+    PMATest<T> TH;
+    // UNDER TEST //
+    TH.construct(std::forward<Args>(args)..., ealloc);
+    return checkConstruct<Args&&...>(*TH.ptr, UA_AllocLast, ealloc);
+    // -------- //
+}
+
+template <class Alloc, class ...Args>
+void test_pmr_uses_alloc(Args&&... args)
+{
+    TestResource R(12435);
+    ex::memory_resource* M = &R;
+    {
+        // NotUsesAllocator provides valid signatures for each uses-allocator
+        // construction but does not supply the required allocator_type typedef.
+        // Test that we can call these constructors manually without
+        // polymorphic_allocator interfering.
+        using T = NotUsesAllocator<Alloc, sizeof...(Args)>;
+        assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+        assert((doTestUsesAllocV1<T>(M, std::forward<Args>(args)...)));
+        assert((doTestUsesAllocV2<T>(M, std::forward<Args>(args)...)));
+    }
+    {
+        // Test T(std::allocator_arg_t, Alloc const&, Args...) construction
+        using T = UsesAllocatorV1<Alloc, sizeof...(Args)>;
+        assert((doTest<T>(UA_AllocArg, std::forward<Args>(args)...)));
+    }
+    {
+        // Test T(Args..., Alloc const&) construction
+        using T = UsesAllocatorV2<Alloc, sizeof...(Args)>;
+        assert((doTest<T>(UA_AllocLast, std::forward<Args>(args)...)));
+    }
+    {
+        // Test that T(std::allocator_arg_t, Alloc const&, Args...) construction
+        // is preferred when T(Args..., Alloc const&) is also available.
+        using T = UsesAllocatorV3<Alloc, sizeof...(Args)>;
+        assert((doTest<T>(UA_AllocArg, std::forward<Args>(args)...)));
+    }
+}
+
+template <class Alloc, class ...Args>
+void test_pmr_not_uses_alloc(Args&&... args)
+{
+    TestResource R(12435);
+    ex::memory_resource* M = &R;
+    {
+        // NotUsesAllocator provides valid signatures for each uses-allocator
+        // construction but does not supply the required allocator_type typedef.
+        // Test that we can call these constructors manually without
+        // polymorphic_allocator interfering.
+        using T = NotUsesAllocator<Alloc, sizeof...(Args)>;
+        assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+        assert((doTestUsesAllocV1<T>(M, std::forward<Args>(args)...)));
+        assert((doTestUsesAllocV2<T>(M, std::forward<Args>(args)...)));
+    }
+    {
+        // Test T(std::allocator_arg_t, Alloc const&, Args...) construction
+        using T = UsesAllocatorV1<Alloc, sizeof...(Args)>;
+        assert((doTest<T>(UA_None, std::forward<Args>(args)...)));
+    }
+    {
+        // Test T(Args..., Alloc const&) construction
+        using T = UsesAllocatorV2<Alloc, sizeof...(Args)>;
+        assert((doTest<T>(UA_None, std::forward<Args>(args)...)));
+    }
+    {
+        // Test that T(std::allocator_arg_t, Alloc const&, Args...) construction
+        // is preferred when T(Args..., Alloc const&) is also available.
+        using T = UsesAllocatorV3<Alloc, sizeof...(Args)>;
+        assert((doTest<T>(UA_None, std::forward<Args>(args)...)));
+    }
+}
+
+// Test that polymorphic_allocator does not prevent us from manually
+// doing non-pmr uses-allocator construction.
+template <class Alloc, class AllocObj, class ...Args>
+void test_non_pmr_uses_alloc(AllocObj const& A, Args&&... args)
+{
+    {
+        using T = NotUsesAllocator<Alloc, sizeof...(Args)>;
+        assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+        assert((doTestUsesAllocV1<T>(A, std::forward<Args>(args)...)));
+        assert((doTestUsesAllocV2<T>(A, std::forward<Args>(args)...)));
+    }
+    {
+        using T = UsesAllocatorV1<Alloc, sizeof...(Args)>;
+        assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+        assert((doTestUsesAllocV1<T>(A, std::forward<Args>(args)...)));
+    }
+    {
+        using T = UsesAllocatorV2<Alloc, sizeof...(Args)>;
+        assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+        assert((doTestUsesAllocV2<T>(A, std::forward<Args>(args)...)));
+    }
+    {
+        using T = UsesAllocatorV3<Alloc, sizeof...(Args)>;
+        assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+        assert((doTestUsesAllocV1<T>(A, std::forward<Args>(args)...)));
+        assert((doTestUsesAllocV2<T>(A, std::forward<Args>(args)...)));
+    }
+}
+
+int main(int, char**)
+{
+    using ET = std::experimental::erased_type;
+    using PMR = ex::memory_resource*;
+    using PMA = ex::polymorphic_allocator<void>;
+    using STDA = std::allocator<char>;
+    using TESTA = test_allocator<char>;
+
+    int value = 42;
+    const int cvalue = 43;
+    {
+        test_pmr_uses_alloc<ET>();
+        test_pmr_not_uses_alloc<PMR>();
+        test_pmr_uses_alloc<PMA>();
+        test_pmr_uses_alloc<ET>(value);
+        test_pmr_not_uses_alloc<PMR>(value);
+        test_pmr_uses_alloc<PMA>(value);
+        test_pmr_uses_alloc<ET>(cvalue);
+        test_pmr_not_uses_alloc<PMR>(cvalue);
+        test_pmr_uses_alloc<PMA>(cvalue);
+        test_pmr_uses_alloc<ET>(cvalue, std::move(value));
+        test_pmr_not_uses_alloc<PMR>(cvalue, std::move(value));
+        test_pmr_uses_alloc<PMA>(cvalue, std::move(value));
+    }
+    {
+        STDA std_alloc;
+        TESTA test_alloc(42);
+        test_non_pmr_uses_alloc<STDA>(std_alloc);
+        test_non_pmr_uses_alloc<TESTA>(test_alloc);
+        test_non_pmr_uses_alloc<STDA>(std_alloc, value);
+        test_non_pmr_uses_alloc<TESTA>(test_alloc, value);
+        test_non_pmr_uses_alloc<STDA>(std_alloc, cvalue);
+        test_non_pmr_uses_alloc<TESTA>(test_alloc, cvalue);
+        test_non_pmr_uses_alloc<STDA>(std_alloc, cvalue, std::move(value));
+        test_non_pmr_uses_alloc<TESTA>(test_alloc, cvalue, std::move(value));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/deallocate.pass.cpp
new file mode 100644
index 0000000..0084d37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/deallocate.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::deallocate(T*, size_t size)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+template <size_t S, size_t Align>
+void testForSizeAndAlign() {
+    struct T { alignas(Align) char data[S]; };
+
+    TestResource R;
+    ex::polymorphic_allocator<T> a(&R);
+
+    for (int N = 1; N <= 5; ++N) {
+        auto ret = a.allocate(N);
+        assert(R.checkAlloc(ret, N * sizeof(T), alignof(T)));
+
+        a.deallocate(ret, N);
+        assert(R.checkDealloc(ret, N * sizeof(T), alignof(T)));
+
+        R.reset();
+    }
+}
+
+int main(int, char**)
+{
+    {
+        ex::polymorphic_allocator<int> a;
+        static_assert(
+            std::is_same<decltype(a.deallocate(nullptr, 0)), void>::value, "");
+    }
+    {
+        constexpr std::size_t MA = alignof(std::max_align_t);
+        testForSizeAndAlign<1, 1>();
+        testForSizeAndAlign<1, 2>();
+        testForSizeAndAlign<1, MA>();
+        testForSizeAndAlign<2, 2>();
+        testForSizeAndAlign<73, alignof(void*)>();
+        testForSizeAndAlign<73, MA>();
+        testForSizeAndAlign<13, MA>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/destroy.pass.cpp
new file mode 100644
index 0000000..039a1c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/destroy.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U>
+// void polymorphic_allocator<T>::destroy(U * ptr);
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <new>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int count = 0;
+
+struct destroyable
+{
+    destroyable() { ++count; }
+    ~destroyable() { --count; }
+};
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<double> A;
+    {
+        A a;
+        static_assert(
+            std::is_same<decltype(a.destroy((destroyable*)nullptr)), void>::value,
+            "");
+    }
+    {
+        destroyable * ptr = ::new (std::malloc(sizeof(destroyable))) destroyable();
+        assert(count == 1);
+        A{}.destroy(ptr);
+        assert(count == 0);
+        std::free(ptr);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/resource.pass.cpp
new file mode 100644
index 0000000..9959573
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/resource.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// memory_resource *
+// polymorphic_allocator<T>::resource() const
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> A;
+    {
+        A const a;
+        static_assert(
+            std::is_same<decltype(a.resource()), ex::memory_resource*>::value
+          , ""
+          );
+    }
+    {
+        ex::memory_resource * mptr = (ex::memory_resource*)42;
+        A const a(mptr);
+        assert(a.resource() == mptr);
+    }
+    {
+        A const a(nullptr);
+        assert(a.resource() == nullptr);
+        assert(a.resource() == nullptr);
+    }
+    {
+        A const a;
+        assert(a.resource() == ex::get_default_resource());
+    }
+    {
+        ex::memory_resource * mptr = (ex::memory_resource*)42;
+        ex::set_default_resource(mptr);
+        A const a;
+        assert(a.resource() == mptr);
+        assert(a.resource() == ex::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/select_on_container_copy_construction.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/select_on_container_copy_construction.pass.cpp
new file mode 100644
index 0000000..be8673f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.mem/select_on_container_copy_construction.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator
+// polymorphic_allocator<T>::select_on_container_copy_construction() const
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::polymorphic_allocator<void> A;
+    {
+        A const a;
+        static_assert(
+            std::is_same<decltype(a.select_on_container_copy_construction()), A>::value,
+            "");
+    }
+    {
+        ex::memory_resource * mptr = (ex::memory_resource*)42;
+        A const a(mptr);
+        assert(a.resource() == mptr);
+        A const other = a.select_on_container_copy_construction();
+        assert(other.resource() == ex::get_default_resource());
+        assert(a.resource() == mptr);
+    }
+    {
+        ex::memory_resource * mptr = (ex::memory_resource*)42;
+        ex::set_default_resource(mptr);
+        A const a(nullptr);
+        assert(a.resource() == nullptr);
+        A const other = a.select_on_container_copy_construction();
+        assert(other.resource() == ex::get_default_resource());
+        assert(other.resource() == mptr);
+        assert(a.resource() == nullptr);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.overview/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.overview/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..796f3c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.polymorphic.allocator.class/memory.polymorphic.allocator.overview/nothing_to_do.pass.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/alloc_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/alloc_copy.pass.cpp
new file mode 100644
index 0000000..0f43709
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/alloc_copy.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class Alloc> class resource_adaptor_imp;
+
+// resource_adaptor_imp<Alloc>::resource_adaptor_imp(Alloc const &)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef CountingAllocator<char> AllocT;
+    typedef ex::resource_adaptor<AllocT> R;
+    {
+        AllocController P;
+        AllocT const a(P);
+        R const r(a);
+        assert(P.copy_constructed == 1);
+        assert(P.move_constructed == 0);
+        assert(r.get_allocator() == a);
+    }
+    {
+        AllocController P;
+        AllocT a(P);
+        R const r(a);
+        assert(P.copy_constructed == 1);
+        assert(P.move_constructed == 0);
+        assert(r.get_allocator() == a);
+    }
+    {
+        AllocController P;
+        AllocT const a(P);
+        R const r(std::move(a));
+        assert(P.copy_constructed == 1);
+        assert(P.move_constructed == 0);
+        assert(r.get_allocator() == a);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/alloc_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/alloc_move.pass.cpp
new file mode 100644
index 0000000..1be7f3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/alloc_move.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class Alloc> class resource_adaptor_imp;
+
+// resource_adaptor_imp<Alloc>::resource_adaptor_imp(Alloc &&)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef CountingAllocator<char> AllocT;
+    typedef ex::resource_adaptor<AllocT> R;
+    {
+        AllocController P;
+        AllocT a(P);
+        R const r(std::move(a));
+        assert(P.copy_constructed == 0);
+        assert(P.move_constructed == 1);
+        assert(r.get_allocator() == a);
+    }
+    {
+        AllocController P;
+        R const r(AllocT{P});
+        assert(P.copy_constructed == 0);
+        assert(P.move_constructed == 1);
+        assert(r.get_allocator() == AllocT{P});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/default.pass.cpp
new file mode 100644
index 0000000..c26a477
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.ctor/default.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class Alloc> class resource_adaptor_imp;
+
+// resource_adaptor_imp<Alloc>::resource_adaptor_imp() = default;
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    {
+        typedef CountingAllocator<char> AllocT; // Not default constructible
+        typedef ex::resource_adaptor<AllocT> R;
+        static_assert(!std::is_default_constructible<R>::value, "");
+    }
+    {
+        typedef std::allocator<char> AllocT; // Is default constructible
+        typedef ex::resource_adaptor<AllocT> R;
+        static_assert(std::is_default_constructible<R>::value, "");
+        R r; ((void)r);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/do_allocate_and_deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/do_allocate_and_deallocate.pass.cpp
new file mode 100644
index 0000000..f9ebeff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/do_allocate_and_deallocate.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class Alloc> class resource_adaptor_imp;
+
+// void * do_allocate(size_t size, size_t align)
+// void   do_deallocate(void*, size_t, size_t)
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <memory>
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+
+namespace ex = std::experimental::pmr;
+
+template <class Alloc>
+void check_allocate_deallocate()
+{
+    typedef ex::resource_adaptor<Alloc> R1;
+    const std::size_t max_align = alignof(std::max_align_t);
+
+    for (std::size_t s = 1; s < 5012; ++s)
+    {
+        for(std::size_t align_req = 1; align_req <= (max_align * 2); align_req *= 2)
+        {
+            const std::size_t align_exp = align_req > max_align
+                                                    ? max_align : align_req;
+            AllocController P;
+            R1 r{Alloc(P)};
+            ex::memory_resource & m1 = r;
+
+            void * const ret = m1.allocate(s, align_req);
+            assert(P.alive == 1);
+            assert(P.alloc_count == 1);
+            assert(P.checkAllocAtLeast(ret, s, align_exp));
+
+            assert(((std::size_t)ret % align_exp) == 0);
+
+            m1.deallocate(ret, s, align_req);
+            assert(P.alive == 0);
+            assert(P.dealloc_count == 1);
+            assert(P.checkDeallocMatchesAlloc());
+        }
+    }
+}
+
+void check_alloc_max_size() {
+    using Alloc = NullAllocator<char>;
+    using R1 = ex::resource_adaptor<Alloc>;
+    const std::size_t max_align = alignof(std::max_align_t);
+
+    auto check = [=](std::size_t s, std::size_t align_req) {
+        const std::size_t align_exp = align_req > max_align
+                                                ? max_align : align_req;
+        AllocController P;
+        R1 r{Alloc(P)};
+        ex::memory_resource & m1 = r;
+
+        void * const ret = m1.allocate(s, align_req);
+        assert(P.alive == 1);
+        assert(P.alloc_count == 1);
+        assert(P.checkAllocAtLeast(ret, s, align_exp));
+
+        m1.deallocate(ret, s, align_req);
+        assert(P.alive == 0);
+        assert(P.dealloc_count == 1);
+        assert(P.checkDeallocMatchesAlloc());
+    };
+
+    const std::size_t sizeTypeMax = ~0;
+    const std::size_t testSizeStart = sizeTypeMax - (max_align * 3);
+    const std::size_t testSizeEnd = sizeTypeMax - max_align;
+
+    for (std::size_t size = testSizeStart; size <= testSizeEnd; ++size) {
+        for (std::size_t align=1; align <= (max_align * 2); align *= 2) {
+            check(size, align);
+        }
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    for (std::size_t size = sizeTypeMax; size > testSizeEnd; --size) {
+        AllocController P;
+        R1 r{Alloc(P)};
+        ex::memory_resource & m1 = r;
+
+        try {
+            m1.allocate(size);
+            assert(false);
+        } catch (std::bad_array_new_length const&) {
+        }
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    check_allocate_deallocate<CountingAllocator<char>>();
+    check_allocate_deallocate<MinAlignedAllocator<char>>();
+    check_alloc_max_size();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/do_is_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/do_is_equal.pass.cpp
new file mode 100644
index 0000000..83777f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.mem/do_is_equal.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class Alloc> class resource_adaptor_imp;
+
+// bool do_is_equal(memory_resource const &) const noexcept;
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <memory>
+#include <cassert>
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+using std::size_t;
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+
+    typedef CountingAllocator<char> Alloc1;
+    typedef CountingAllocator<int> RAlloc1;
+    typedef ex::resource_adaptor<Alloc1> R1;
+    typedef ex::resource_adaptor<RAlloc1> RR1;
+    static_assert(std::is_same<R1, RR1>::value, "");
+
+    typedef std::allocator<char> Alloc2;
+    typedef ex::resource_adaptor<Alloc2> R2;
+    static_assert(!std::is_same<R1, R2>::value, "");
+
+    // equal same type
+    {
+        AllocController C;
+        Alloc1 a1(C);
+        R1 const r1(a1);
+        ex::memory_resource const & m1 = r1;
+
+        Alloc1 a2(C);
+        R1 const r2(a2);
+        ex::memory_resource const & m2 = r2;
+
+        assert(m1.is_equal(m2));
+        assert(m2.is_equal(m1));
+    }
+    // not equal same type
+    {
+        AllocController C;
+        Alloc1 a1(C);
+        R1 const r1(a1);
+        ex::memory_resource const & m1 = r1;
+
+        AllocController C2;
+        Alloc1 a2(C2);
+        R1 const r2(a2);
+        ex::memory_resource const & m2 = r2;
+
+        assert(!m1.is_equal(m2));
+        assert(!m2.is_equal(m1));
+    }
+    // different allocator types
+    {
+        AllocController C;
+        Alloc1 a1(C);
+        R1 const r1(a1);
+        ex::memory_resource const & m1 = r1;
+
+        Alloc2 a2;
+        R2 const r2(a2);
+        ex::memory_resource const & m2 = r2;
+
+        assert(!m1.is_equal(m2));
+        assert(!m2.is_equal(m1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.overview/overview.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.overview/overview.pass.cpp
new file mode 100644
index 0000000..5958824
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.adaptor/memory.resource.adaptor.overview/overview.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// template <class Alloc> class resource_adaptor_imp;
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    typedef ex::resource_adaptor<std::allocator<int>> R;
+    typedef ex::resource_adaptor<std::allocator<long>> R2;
+    static_assert(std::is_same<R, R2>::value, "");
+    {
+        static_assert(std::is_base_of<ex::memory_resource, R>::value, "");
+        static_assert(std::is_same<R::allocator_type, std::allocator<char>>::value, "");
+    }
+    {
+        static_assert(std::is_default_constructible<R>::value, "");
+        static_assert(std::is_copy_constructible<R>::value, "");
+        static_assert(std::is_move_constructible<R>::value, "");
+        static_assert(std::is_copy_assignable<R>::value, "");
+        static_assert(std::is_move_assignable<R>::value, "");
+   }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_deque_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_deque_synop.pass.cpp
new file mode 100644
index 0000000..03fde4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_deque_synop.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/deque>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class T>
+// using deque =
+//     ::std::deque<T, polymorphic_allocator<T>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/deque>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+int main(int, char**)
+{
+    using StdDeque = std::deque<int, pmr::polymorphic_allocator<int>>;
+    using PmrDeque = pmr::deque<int>;
+    static_assert(std::is_same<StdDeque, PmrDeque>::value, "");
+    PmrDeque d;
+    assert(d.get_allocator().resource() == pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_forward_list_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_forward_list_synop.pass.cpp
new file mode 100644
index 0000000..614b8c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_forward_list_synop.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/forward_list>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class T>
+// using forward_list =
+//     ::std::forward_list<T, polymorphic_allocator<T>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/forward_list>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+int main(int, char**)
+{
+    using StdForwardList = std::forward_list<int, pmr::polymorphic_allocator<int>>;
+    using PmrForwardList = pmr::forward_list<int>;
+    static_assert(std::is_same<StdForwardList, PmrForwardList>::value, "");
+    PmrForwardList d;
+    assert(d.get_allocator().resource() == pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_list_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_list_synop.pass.cpp
new file mode 100644
index 0000000..c786a4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_list_synop.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/list>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class T>
+// using list =
+//     ::std::list<T, polymorphic_allocator<T>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/list>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+int main(int, char**)
+{
+    using StdList = std::list<int, pmr::polymorphic_allocator<int>>;
+    using PmrList = pmr::list<int>;
+    static_assert(std::is_same<StdList, PmrList>::value, "");
+    PmrList d;
+    assert(d.get_allocator().resource() == pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_map_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_map_synop.pass.cpp
new file mode 100644
index 0000000..0671cc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_map_synop.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/map>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class K, class V, class Compare = less<Key> >
+// using map =
+//     ::std::map<K, V, Compare, polymorphic_allocator<pair<const K, V>>>
+//
+// template <class K, class V, class Compare = less<Key> >
+// using multimap =
+//     ::std::multimap<K, V, Compare, polymorphic_allocator<pair<const K, V>>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/map>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+int main(int, char**)
+{
+    using K = int;
+    using V = char;
+    using DC = std::less<int>;
+    using OC = std::greater<int>;
+    using P = std::pair<const K, V>;
+    {
+        using StdMap = std::map<K, V, DC, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::map<K, V>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        using StdMap = std::map<K, V, OC, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::map<K, V, OC>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        pmr::map<int, int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+    {
+        using StdMap = std::multimap<K, V, DC, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::multimap<K, V>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        using StdMap = std::multimap<K, V, OC, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::multimap<K, V, OC>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        pmr::multimap<int, int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_regex_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_regex_synop.pass.cpp
new file mode 100644
index 0000000..397cb26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_regex_synop.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-localization
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/regex>
+
+// namespace std { namespace experimental { namespace pmr {
+//
+//  template <class BidirectionalIterator>
+//  using match_results =
+//    std::match_results<BidirectionalIterator,
+//                       polymorphic_allocator<sub_match<BidirectionalIterator>>>;
+//
+//  typedef match_results<const char*> cmatch;
+//  typedef match_results<const wchar_t*> wcmatch;
+//  typedef match_results<string::const_iterator> smatch;
+//  typedef match_results<wstring::const_iterator> wsmatch;
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/regex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+template <class Iter, class PmrTypedef>
+void test_match_result_typedef() {
+    using StdMR = std::match_results<Iter, pmr::polymorphic_allocator<std::sub_match<Iter>>>;
+    using PmrMR = pmr::match_results<Iter>;
+    static_assert(std::is_same<StdMR, PmrMR>::value, "");
+    static_assert(std::is_same<PmrMR, PmrTypedef>::value, "");
+}
+
+int main(int, char**)
+{
+    {
+        test_match_result_typedef<const char*, pmr::cmatch>();
+        test_match_result_typedef<pmr::string::const_iterator, pmr::smatch>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        test_match_result_typedef<const wchar_t*, pmr::wcmatch>();
+        test_match_result_typedef<pmr::wstring::const_iterator, pmr::wsmatch>();
+#endif
+    }
+    {
+        // Check that std::match_results has been included and is complete.
+        pmr::smatch s;
+        assert(s.get_allocator().resource() == pmr::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_set_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_set_synop.pass.cpp
new file mode 100644
index 0000000..ee75125
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_set_synop.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/set>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class V, class Compare = less<V> >
+// using set =
+//     ::std::set<V, Compare, polymorphic_allocator<V>>
+//
+// template <class V, class Compare = less<V> >
+// using multiset =
+//     ::std::multiset<V, Compare, polymorphic_allocator<V>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/set>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+int main(int, char**)
+{
+    using V = char;
+    using DC = std::less<V>;
+    using OC = std::greater<V>;
+    {
+        using StdSet = std::set<V, DC, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::set<V>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        using StdSet = std::set<V, OC, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::set<V, OC>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        pmr::set<int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+    {
+        using StdSet = std::multiset<V, DC, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::multiset<V>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        using StdSet = std::multiset<V, OC, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::multiset<V, OC>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        pmr::multiset<int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_string_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_string_synop.pass.cpp
new file mode 100644
index 0000000..d8acb05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_string_synop.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/string>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class Char, class Traits = ...>
+// using basic_string =
+//     ::std::basic_string<Char, Traits, polymorphic_allocator<Char>>
+//
+// typedef ... string
+// typedef ... u16string
+// typedef ... u32string
+// typedef ... wstring
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/string>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "constexpr_char_traits.h"
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+template <class Char, class PmrTypedef>
+void test_string_typedef() {
+    using StdStr = std::basic_string<Char, std::char_traits<Char>,
+                                     pmr::polymorphic_allocator<Char>>;
+    using PmrStr = pmr::basic_string<Char>;
+    static_assert(std::is_same<StdStr, PmrStr>::value, "");
+    static_assert(std::is_same<PmrStr, PmrTypedef>::value, "");
+}
+
+template <class Char, class Traits>
+void test_basic_string_alias() {
+    using StdStr = std::basic_string<Char, Traits,
+                                     pmr::polymorphic_allocator<Char>>;
+    using PmrStr = pmr::basic_string<Char, Traits>;
+    static_assert(std::is_same<StdStr, PmrStr>::value, "");
+}
+
+int main(int, char**)
+{
+    {
+        test_string_typedef<char,     pmr::string>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        test_string_typedef<wchar_t,  pmr::wstring>();
+#endif
+        test_string_typedef<char16_t, pmr::u16string>();
+        test_string_typedef<char32_t, pmr::u32string>();
+    }
+    {
+        test_basic_string_alias<char,    constexpr_char_traits<char>>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        test_basic_string_alias<wchar_t, constexpr_char_traits<wchar_t>>();
+#endif
+        test_basic_string_alias<char16_t, constexpr_char_traits<char16_t>>();
+        test_basic_string_alias<char32_t, constexpr_char_traits<char32_t>>();
+    }
+    {
+        // Check that std::basic_string has been included and is complete.
+        pmr::string s;
+        assert(s.get_allocator().resource() == pmr::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_unordered_map_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_unordered_map_synop.pass.cpp
new file mode 100644
index 0000000..c106829
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_unordered_map_synop.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/unordered_map>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class K, class V, class H = hash<K>, class P = equal_to<K> >
+// using unordered_map =
+//     ::std::unordered_map<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
+//
+// template <class K, class V,  class H = hash<K>, class P = equal_to<K> >
+// using unordered_multimap =
+//     ::std::unordered_multimap<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/unordered_map>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+template <class T>
+struct MyHash : std::hash<T> {};
+
+template <class T>
+struct MyPred : std::equal_to<T> {};
+
+int main(int, char**)
+{
+    using K = int;
+    using V = char;
+    using DH = std::hash<K>;
+    using MH = MyHash<K>;
+    using DP = std::equal_to<K>;
+    using MP = MyPred<K>;
+    using P = std::pair<const K, V>;
+    {
+        using StdMap = std::unordered_map<K, V, DH, DP, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::unordered_map<K, V>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        using StdMap = std::unordered_map<K, V, MH, DP, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::unordered_map<K, V, MH>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        using StdMap = std::unordered_map<K, V, MH, MP, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::unordered_map<K, V, MH, MP>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        pmr::unordered_map<int, int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+    {
+        using StdMap = std::unordered_multimap<K, V, DH, DP, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::unordered_multimap<K, V>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        using StdMap = std::unordered_multimap<K, V, MH, DP, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::unordered_multimap<K, V, MH>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        using StdMap = std::unordered_multimap<K, V, MH, MP, pmr::polymorphic_allocator<P>>;
+        using PmrMap = pmr::unordered_multimap<K, V, MH, MP>;
+        static_assert(std::is_same<StdMap, PmrMap>::value, "");
+    }
+    {
+        pmr::unordered_multimap<int, int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_unordered_set_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_unordered_set_synop.pass.cpp
new file mode 100644
index 0000000..7cdf1ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_unordered_set_synop.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/unordered_set>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class V, class H = hash<V>, class P = equal_to<V> >
+// using unordered_set =
+//     ::std::unordered_set<V, H, P, polymorphic_allocator<V>>
+//
+// template <class V,  class H = hash<V>, class P = equal_to<V> >
+// using unordered_multiset =
+//     ::std::unordered_multiset<V, H, P, polymorphic_allocator<V>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/unordered_set>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+template <class T>
+struct MyHash : std::hash<T> {};
+
+template <class T>
+struct MyPred : std::equal_to<T> {};
+
+int main(int, char**)
+{
+    using V = char;
+    using DH = std::hash<V>;
+    using MH = MyHash<V>;
+    using DP = std::equal_to<V>;
+    using MP = MyPred<V>;
+    {
+        using StdSet = std::unordered_set<V, DH, DP, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::unordered_set<V>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        using StdSet = std::unordered_set<V, MH, DP, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::unordered_set<V, MH>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        using StdSet = std::unordered_set<V, MH, MP, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::unordered_set<V, MH, MP>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        pmr::unordered_set<int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+    {
+        using StdSet = std::unordered_multiset<V, DH, DP, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::unordered_multiset<V>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        using StdSet = std::unordered_multiset<V, MH, DP, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::unordered_multiset<V, MH>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        using StdSet = std::unordered_multiset<V, MH, MP, pmr::polymorphic_allocator<V>>;
+        using PmrSet = pmr::unordered_multiset<V, MH, MP>;
+        static_assert(std::is_same<StdSet, PmrSet>::value, "");
+    }
+    {
+        pmr::unordered_multiset<int> m;
+        assert(m.get_allocator().resource() == pmr::get_default_resource());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_vector_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_vector_synop.pass.cpp
new file mode 100644
index 0000000..0a503bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.aliases/header_vector_synop.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/vector>
+
+// namespace std { namespace experimental { namespace pmr {
+// template <class T>
+// using vector =
+//     ::std::vector<T, polymorphic_allocator<T>>
+//
+// }}} // namespace std::experimental::pmr
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/vector>
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace pmr = std::experimental::pmr;
+
+int main(int, char**)
+{
+    using StdVector = std::vector<int, pmr::polymorphic_allocator<int>>;
+    using PmrVector = pmr::vector<int>;
+    static_assert(std::is_same<StdVector, PmrVector>::value, "");
+    PmrVector d;
+    assert(d.get_allocator().resource() == pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/default_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/default_resource.pass.cpp
new file mode 100644
index 0000000..12d1124
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/default_resource.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+//-----------------------------------------------------------------------------
+// TESTING memory_resource * get_default_resource() noexcept;
+//         memory_resource * set_default_resource(memory_resource*) noexcept;
+//
+// Concerns:
+//  A) 'get_default_resource()' returns a non-null memory_resource pointer.
+//  B) 'get_default_resource()' returns the value set by the last call to
+//     'set_default_resource(...)' and 'new_delete_resource()' if no call
+//     to 'set_default_resource(...)' has occurred.
+//  C) 'set_default_resource(...)' returns the previous value of the default
+//     resource.
+//  D) 'set_default_resource(T* p)' for a non-null 'p' sets the default resource
+//     to be 'p'.
+//  E) 'set_default_resource(null)' sets the default resource to
+//     'new_delete_resource()'.
+//  F) 'get_default_resource' and 'set_default_resource' are noexcept.
+
+
+#include <experimental/memory_resource>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+using namespace std::experimental::pmr;
+
+int main(int, char**) {
+    TestResource R;
+    { // Test (A) and (B)
+        memory_resource* p = get_default_resource();
+        assert(p != nullptr);
+        assert(p == new_delete_resource());
+        assert(p == get_default_resource());
+    }
+    { // Test (C) and (D)
+        memory_resource *expect = &R;
+        memory_resource *old = set_default_resource(expect);
+        assert(old != nullptr);
+        assert(old == new_delete_resource());
+
+        memory_resource *p = get_default_resource();
+        assert(p != nullptr);
+        assert(p == expect);
+        assert(p == get_default_resource());
+    }
+    { // Test (E)
+        memory_resource* old = set_default_resource(nullptr);
+        assert(old == &R);
+        memory_resource* p = get_default_resource();
+        assert(p != nullptr);
+        assert(p == new_delete_resource());
+        assert(p == get_default_resource());
+    }
+    { // Test (F)
+        static_assert(noexcept(get_default_resource()),
+                      "get_default_resource() must be noexcept");
+
+        static_assert(noexcept(set_default_resource(nullptr)),
+                      "set_default_resource() must be noexcept");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/new_delete_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/new_delete_resource.pass.cpp
new file mode 100644
index 0000000..44b00cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/new_delete_resource.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// memory_resource * new_delete_resource()
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+struct assert_on_compare : public ex::memory_resource
+{
+protected:
+    void * do_allocate(size_t, size_t) override
+    { assert(false); return nullptr; }
+
+    void do_deallocate(void *, size_t, size_t) override
+    { assert(false); }
+
+    bool do_is_equal(ex::memory_resource const &) const noexcept override
+    { assert(false); return false; }
+};
+
+void test_return()
+{
+    {
+        static_assert(std::is_same<
+            decltype(ex::new_delete_resource()), ex::memory_resource*
+          >::value, "");
+    }
+    // assert not null
+    {
+        assert(ex::new_delete_resource());
+    }
+    // assert same return value
+    {
+        assert(ex::new_delete_resource() == ex::new_delete_resource());
+    }
+}
+
+void test_equality()
+{
+    // Same object
+    {
+        ex::memory_resource & r1 = *ex::new_delete_resource();
+        ex::memory_resource & r2 = *ex::new_delete_resource();
+        // check both calls returned the same object
+        assert(&r1 == &r2);
+        // check for proper equality semantics
+        assert(r1 == r2);
+        assert(r2 == r1);
+        assert(!(r1 != r2));
+        assert(!(r2 != r1));
+    }
+    // Different types
+    {
+        ex::memory_resource & r1 = *ex::new_delete_resource();
+        assert_on_compare c;
+        ex::memory_resource & r2 = c;
+        assert(r1 != r2);
+        assert(!(r1 == r2));
+    }
+}
+
+void test_allocate_deallocate()
+{
+    ex::memory_resource & r1 = *ex::new_delete_resource();
+
+    globalMemCounter.reset();
+
+    void *ret = r1.allocate(50);
+    assert(ret);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(globalMemCounter.checkLastNewSizeEq(50));
+
+    r1.deallocate(ret, 1);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(globalMemCounter.checkDeleteCalledEq(1));
+
+}
+
+int main(int, char**)
+{
+    static_assert(noexcept(ex::new_delete_resource()), "Must be noexcept");
+    test_return();
+    test_equality();
+    test_allocate_deallocate();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/null_memory_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/null_memory_resource.pass.cpp
new file mode 100644
index 0000000..8ac9b8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.global/null_memory_resource.pass.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocation is required by std::experimental::pmr, but it was not provided
+// before macosx10.13 and as a result we get linker errors when deploying to older than
+// macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <experimental/memory_resource>
+
+// memory_resource * null_memory_resource()
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+namespace ex = std::experimental::pmr;
+
+struct assert_on_compare : public ex::memory_resource
+{
+protected:
+    void * do_allocate(size_t, size_t) override
+    { assert(false); return nullptr; }
+
+    void do_deallocate(void *, size_t, size_t) override
+    { assert(false); }
+
+    bool do_is_equal(ex::memory_resource const &) const noexcept override
+    { assert(false); return false; }
+};
+
+void test_return()
+{
+    {
+        static_assert(std::is_same<
+            decltype(ex::null_memory_resource()), ex::memory_resource*
+          >::value, "");
+    }
+    // Test that the returned value is not null
+    {
+        assert(ex::null_memory_resource());
+    }
+    // Test the same value is returned by repeated calls.
+    {
+        assert(ex::null_memory_resource() == ex::null_memory_resource());
+    }
+}
+
+void test_equality()
+{
+    // Same object
+    {
+        ex::memory_resource & r1 = *ex::null_memory_resource();
+        ex::memory_resource & r2 = *ex::null_memory_resource();
+        // check both calls returned the same object
+        assert(&r1 == &r2);
+        // check for proper equality semantics
+        assert(r1 == r2);
+        assert(r2 == r1);
+        assert(!(r1 != r2));
+        assert(!(r2 != r1));
+        // check the is_equal method
+        assert(r1.is_equal(r2));
+        assert(r2.is_equal(r1));
+    }
+    // Different types
+    {
+        ex::memory_resource & r1 = *ex::null_memory_resource();
+        assert_on_compare c;
+        ex::memory_resource & r2 = c;
+        assert(r1 != r2);
+        assert(!(r1 == r2));
+        assert(!r1.is_equal(r2));
+    }
+}
+
+void test_allocate()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    DisableAllocationGuard g; // null_memory_resource shouldn't allocate.
+    try {
+        ex::null_memory_resource()->allocate(1);
+        assert(false);
+    } catch (std::bad_alloc const &) {
+       // do nothing
+    } catch (...) {
+        assert(false);
+    }
+#endif
+}
+
+void test_deallocate()
+{
+    globalMemCounter.reset();
+
+    int x = 42;
+    ex::null_memory_resource()->deallocate(nullptr, 0);
+    ex::null_memory_resource()->deallocate(&x, 0);
+
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+    assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+}
+
+int main(int, char**)
+{
+    test_return();
+    test_equality();
+    test_allocate();
+    test_deallocate();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.synop/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.synop/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource.synop/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/construct.fail.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/construct.fail.cpp
new file mode 100644
index 0000000..2a6a927
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/construct.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/memory_resource>
+
+// Check that memory_resource is not constructible
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    ex::memory_resource m; // expected-error {{variable type 'ex::memory_resource' is an abstract class}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.eq/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.eq/equal.pass.cpp
new file mode 100644
index 0000000..0b007ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.eq/equal.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// bool operator==(memory_resource const &, memory_resource const &) noexcept;
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    // check return types
+    {
+        ex::memory_resource const * mr1(nullptr);
+        ex::memory_resource const * mr2(nullptr);
+        static_assert(std::is_same<decltype(*mr1 == *mr2), bool>::value, "");
+        static_assert(noexcept(*mr1 == *mr2), "");
+    }
+    // equal
+    {
+        TestResource r1(1);
+        TestResource r2(1);
+        ex::memory_resource const & mr1 = r1;
+        ex::memory_resource const & mr2 = r2;
+
+        assert(mr1 == mr2);
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(0));
+
+        assert(mr2 == mr1);
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(1));
+    }
+    // equal same object
+    {
+        TestResource r1(1);
+        ex::memory_resource const & mr1 = r1;
+        ex::memory_resource const & mr2 = r1;
+
+        assert(mr1 == mr2);
+        assert(r1.checkIsEqualCalledEq(0));
+
+        assert(mr2 == mr1);
+        assert(r1.checkIsEqualCalledEq(0));
+    }
+    // not equal
+    {
+        TestResource r1(1);
+        TestResource r2(2);
+        ex::memory_resource const & mr1 = r1;
+        ex::memory_resource const & mr2 = r2;
+
+        assert(!(mr1 == mr2));
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(0));
+
+        assert(!(mr2 == mr1));
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.eq/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.eq/not_equal.pass.cpp
new file mode 100644
index 0000000..182b335
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.eq/not_equal.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+// bool operator!=(memory_resource const &, memory_resource const &) noexcept;
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**)
+{
+    // check return types
+    {
+        ex::memory_resource const * mr1(nullptr);
+        ex::memory_resource const * mr2(nullptr);
+        static_assert(std::is_same<decltype(*mr1 != *mr2), bool>::value, "");
+        static_assert(noexcept(*mr1 != *mr2), "");
+    }
+    // not equal
+    {
+        TestResource r1(1);
+        TestResource r2(2);
+        ex::memory_resource const & mr1 = r1;
+        ex::memory_resource const & mr2 = r2;
+
+        assert(mr1 != mr2);
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(0));
+
+        assert(mr2 != mr1);
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(1));
+    }
+    // equal
+    {
+        TestResource r1(1);
+        TestResource r2(1);
+        ex::memory_resource const & mr1 = r1;
+        ex::memory_resource const & mr2 = r2;
+
+        assert(!(mr1 != mr2));
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(0));
+
+        assert(!(mr2 != mr1));
+        assert(r1.checkIsEqualCalledEq(1));
+        assert(r2.checkIsEqualCalledEq(1));
+    }
+    // equal same object
+    {
+        TestResource r1(1);
+        ex::memory_resource const & mr1 = r1;
+        ex::memory_resource const & mr2 = r1;
+
+        assert(!(mr1 != mr2));
+        assert(r1.checkIsEqualCalledEq(0));
+
+        assert(!(mr2 != mr1));
+        assert(r1.checkIsEqualCalledEq(0));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.overview/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.overview/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..796f3c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.overview/nothing_to_do.pass.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.priv/private_members.fail.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.priv/private_members.fail.cpp
new file mode 100644
index 0000000..0a03538
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.priv/private_members.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <experimental/memory_resource>
+
+// memory_resource::do_allocate(size_t, size_t);          /* private */
+// memory_resource::do_deallocate(void*, size_t, size_t); /* private */
+// memory_resource::do_is_equal(memory_resource const&);  /* private */
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+
+namespace ex = std::experimental::pmr;
+
+int main(int, char**) {
+    ex::memory_resource *m = ex::new_delete_resource();
+    m->do_allocate(0, 0); // expected-error{{'do_allocate' is a private member}}
+    m->do_deallocate(nullptr, 0, 0); // expected-error{{'do_deallocate' is a private member}}
+    m->do_is_equal(*m); // expected-error{{'do_is_equal' is a private member}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/allocate.pass.cpp
new file mode 100644
index 0000000..f09c820
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/allocate.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING void * memory_resource::allocate(size_t, size_t = max_align)
+//
+// Concerns:
+//  A) 'memory_resource' contains a member 'allocate' with the required
+//     signature, including the default alignment parameter.
+//  B) The return type of 'allocate' is 'void*'.
+//  C) 'allocate' is not marked as 'noexcept'.
+//  D) Invoking 'allocate' invokes 'do_allocate' with the same arguments.
+//  E) If 'do_allocate' throws then 'allocate' propagates that exception.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_memory_resource.h"
+
+using std::experimental::pmr::memory_resource;
+
+int main(int, char**)
+{
+    TestResource R(42);
+    auto& P = R.getController();
+    memory_resource& M = R;
+    {
+        static_assert(
+            std::is_same<decltype(M.allocate(0, 0)), void*>::value
+          , "Must be void*"
+          );
+        static_assert(
+            std::is_same<decltype(M.allocate(0)), void*>::value
+          , "Must be void*"
+          );
+    }
+    {
+        static_assert(
+            ! noexcept(M.allocate(0, 0))
+          , "Must not be noexcept."
+          );
+        static_assert(
+            ! noexcept(M.allocate(0))
+          , "Must not be noexcept."
+          );
+    }
+    {
+        int s = 42;
+        int a = 64;
+        void* p = M.allocate(s, a);
+        assert(P.alloc_count == 1);
+        assert(P.checkAlloc(p, s, a));
+
+        s = 128;
+        a = MaxAlignV;
+        p = M.allocate(s);
+        assert(P.alloc_count == 2);
+        assert(P.checkAlloc(p, s, a));
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        TestResource R2;
+        auto& P2 = R2.getController();
+        P2.throw_on_alloc = true;
+        memory_resource& M2 = R2;
+        try {
+            M2.allocate(42);
+            assert(false);
+        } catch (TestException const&) {
+            // do nothing.
+        } catch (...) {
+            assert(false);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/deallocate.pass.cpp
new file mode 100644
index 0000000..f23db0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/deallocate.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING void * memory_resource::deallocate(void *, size_t, size_t = max_align)
+//
+// Concerns:
+//  A) 'memory_resource' contains a member 'deallocate' with the required
+//     signature, including the default alignment parameter.
+//  B) The return type of 'deallocate' is 'void'.
+//  C) 'deallocate' is not marked as 'noexcept'.
+//  D) Invoking 'deallocate' invokes 'do_deallocate' with the same arguments.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cstddef>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+using std::experimental::pmr::memory_resource;
+
+int main(int, char**)
+{
+    NullResource R(42);
+    auto& P = R.getController();
+    memory_resource& M = R;
+    {
+        static_assert(
+            std::is_same<decltype(M.deallocate(nullptr, 0, 0)), void>::value
+          , "Must be void"
+          );
+        static_assert(
+            std::is_same<decltype(M.deallocate(nullptr, 0)), void>::value
+          , "Must be void"
+          );
+    }
+    {
+        static_assert(
+            ! noexcept(M.deallocate(nullptr, 0, 0))
+          , "Must not be noexcept."
+          );
+        static_assert(
+            ! noexcept(M.deallocate(nullptr, 0))
+          , "Must not be noexcept."
+          );
+    }
+    {
+        int s = 100;
+        int a = 64;
+        void* p = reinterpret_cast<void*>(640);
+        M.deallocate(p, s, a);
+        assert(P.dealloc_count == 1);
+        assert(P.checkDealloc(p, s, a));
+
+        s = 128;
+        a = alignof(std::max_align_t);
+        p = reinterpret_cast<void*>(12800);
+        M.deallocate(p, s);
+        assert(P.dealloc_count == 2);
+        assert(P.checkDealloc(p, s, a));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/dtor.pass.cpp
new file mode 100644
index 0000000..51bcd22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/dtor.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING virtual ~memory_resource()
+//
+// Concerns:
+//  A) 'memory_resource' is destructible.
+//  B) The destructor is implicitly marked noexcept.
+//  C) The destructor is marked virtual.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+using std::experimental::pmr::memory_resource;
+
+int main(int, char**)
+{
+    static_assert(
+        std::has_virtual_destructor<memory_resource>::value
+      , "Must have virtual destructor"
+      );
+    static_assert(
+        std::is_nothrow_destructible<memory_resource>::value,
+        "Must be nothrow destructible"
+      );
+    static_assert(
+        std::is_abstract<memory_resource>::value
+      , "Must be abstract"
+      );
+    // Check that the destructor of `TestResource` is called when
+    // it is deleted as a pointer to `memory_resource`
+    {
+        using TR = TestResource;
+        memory_resource* M = new TR(42);
+        assert(TR::resource_alive == 1);
+        assert(TR::resource_constructed == 1);
+        assert(TR::resource_destructed == 0);
+
+        delete M;
+
+        assert(TR::resource_alive == 0);
+        assert(TR::resource_constructed == 1);
+        assert(TR::resource_destructed == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/is_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/is_equal.pass.cpp
new file mode 100644
index 0000000..ab636f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/memory/memory.resource/memory.resource.public/is_equal.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <experimental/memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING virtual bool is_equal(memory_resource const &) const noexcept
+//
+// Concerns:
+//   A) 'memory_resource' provides a function 'is_equal' with the required
+//      signature.
+//   B) 'is_equal' is noexcept.
+//   C) 'do_is_equal' is called using the same arguments passed to 'is_equal'
+//      and the resulting value is returned.
+//   D) 'do_is_equal' is called on the LHS object and not the RHS object.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <experimental/memory_resource>
+#include <type_traits>
+#include <cassert>
+#include "test_memory_resource.h"
+
+#include "test_macros.h"
+
+using std::experimental::pmr::memory_resource;
+
+int main(int, char**)
+{
+    {
+        memory_resource const* r1 = nullptr;
+        memory_resource const* r2 = nullptr;
+        static_assert(
+            noexcept(r1->is_equal(*r2))
+          , "is_equal must be noexcept"
+          );
+    }
+    {
+        TestResource1 R1(1);
+        auto& P1 = R1.getController();
+        memory_resource const& M1 = R1;
+
+        TestResource2 R2(1);
+        auto& P2 = R2.getController();
+        memory_resource const& M2 = R2;
+
+        assert(M1.is_equal(M2) == false);
+        assert(P1.checkIsEqualCalledEq(1));
+        assert(P2.checkIsEqualCalledEq(0));
+
+        assert(M2.is_equal(M1) == false);
+        assert(P2.checkIsEqualCalledEq(1));
+        assert(P1.checkIsEqualCalledEq(1));
+    }
+    {
+        TestResource1 R1(1);
+        auto& P1 = R1.getController();
+        memory_resource const& M1 = R1;
+
+        TestResource1 R2(2);
+        auto& P2 = R2.getController();
+        memory_resource const& M2 = R2;
+
+        assert(M1.is_equal(M2) == false);
+        assert(P1.checkIsEqualCalledEq(1));
+        assert(P2.checkIsEqualCalledEq(0));
+
+        assert(M2.is_equal(M1) == false);
+        assert(P2.checkIsEqualCalledEq(1));
+        assert(P1.checkIsEqualCalledEq(1));
+    }
+    {
+        TestResource1 R1(1);
+        auto& P1 = R1.getController();
+        memory_resource const& M1 = R1;
+
+        TestResource1 R2(1);
+        auto& P2 = R2.getController();
+        memory_resource const& M2 = R2;
+
+        assert(M1.is_equal(M2) == true);
+        assert(P1.checkIsEqualCalledEq(1));
+        assert(P2.checkIsEqualCalledEq(0));
+
+        assert(M2.is_equal(M1) == true);
+        assert(P2.checkIsEqualCalledEq(1));
+        assert(P1.checkIsEqualCalledEq(1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.abi/vector_extension.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.abi/vector_extension.pass.cpp
new file mode 100644
index 0000000..35a4538
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.abi/vector_extension.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.abi]
+
+#include <experimental/simd>
+#include <cstdint>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+constexpr inline int reg_width() {
+#if defined(__AVX__)
+  return 32;
+#else
+  return 16;
+#endif
+}
+
+#ifndef _LIBCPP_HAS_NO_VECTOR_EXTENSION
+
+static_assert(
+    sizeof(ex::simd<char, ex::__simd_abi<ex::_StorageKind::_VecExt, 1>>) == 1,
+    "");
+static_assert(
+    sizeof(ex::simd<char, ex::__simd_abi<ex::_StorageKind::_VecExt, 2>>) == 2,
+    "");
+static_assert(
+    sizeof(ex::simd<char, ex::__simd_abi<ex::_StorageKind::_VecExt, 3>>) == 4,
+    "");
+static_assert(
+    sizeof(ex::simd<char, ex::__simd_abi<ex::_StorageKind::_VecExt, 12>>) == 16,
+    "");
+static_assert(
+    sizeof(ex::simd<int32_t, ex::__simd_abi<ex::_StorageKind::_VecExt, 3>>) ==
+        16,
+    "");
+static_assert(
+    sizeof(ex::simd<int32_t, ex::__simd_abi<ex::_StorageKind::_VecExt, 5>>) ==
+        32,
+    "");
+static_assert(
+    std::is_same<ex::simd_abi::native<int8_t>,
+                 ex::__simd_abi<ex::_StorageKind::_VecExt, reg_width()>>::value,
+    "");
+#else
+static_assert(
+    std::is_same<ex::simd_abi::native<int8_t>,
+                 ex::__simd_abi<ex::_StorageKind::_Array, reg_width()>>::value,
+    "");
+
+#endif
+
+static_assert(std::is_same<ex::simd_abi::compatible<int8_t>,
+                           ex::__simd_abi<ex::_StorageKind::_Array, 16>>::value,
+              "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.access/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.access/default.pass.cpp
new file mode 100644
index 0000000..2ca5ec4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.access/default.pass.cpp
@@ -0,0 +1,220 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// scalar access [simd.subscr]
+// reference operator[](size_t);
+// value_type operator[](size_t) const;
+
+#include <experimental/simd>
+#include <cassert>
+#include <cstdint>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+template <typename SimdType>
+void test_access() {
+  {
+    SimdType a(42), b(4);
+    static_assert(std::is_convertible<decltype(a[0]), int8_t>::value, "");
+
+    assert(a[0] == 42);
+    assert(!a[0] == !42);
+    assert(~a[0] == ~42);
+    assert(+a[0] == +42);
+    assert(-a[0] == -42);
+    assert(a[0] + b[0] == 42 + 4);
+    assert(a[0] - b[0] == 42 - 4);
+    assert(a[0] * b[0] == 42 * 4);
+    assert(a[0] / b[0] == 42 / 4);
+    assert(a[0] % b[0] == 42 % 4);
+    assert(a[0] << b[0] == (42 << 4));
+    assert(a[0] >> b[0] == (42 >> 4));
+    assert((a[0] < b[0]) == false);
+    assert((a[0] <= b[0]) == false);
+    assert((a[0] > b[0]) == true);
+    assert((a[0] >= b[0]) == true);
+    assert((a[0] == b[0]) == false);
+    assert((a[0] != b[0]) == true);
+    assert((a[0] & b[0]) == (42 & 4));
+    assert((a[0] | b[0]) == (42 | 4));
+    assert((a[0] ^ b[0]) == (42 ^ 4));
+    assert((a[0] && b[0]) == true);
+    assert((a[0] || b[0]) == true);
+
+    {
+      auto c = a;
+      ++c[0];
+      assert(c[0] == 42 + 1);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      auto ret = c[0]++;
+      assert(ret == 42);
+      assert(c[0] == 42 + 1);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      --c[0];
+      assert(c[0] == 42 - 1);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      auto ret = c[0]--;
+      assert(ret == 42);
+      assert(c[0] == 42 - 1);
+      assert(c[1] == 42);
+    }
+
+    {
+      auto c = a;
+      c[0] += b[0];
+      assert(c[0] == 42 + 4);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] -= b[0];
+      assert(c[0] == 42 - 4);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] *= b[0];
+      assert(c[0] == 42 * 4);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] /= b[0];
+      assert(c[0] == 42 / 4);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] %= b[0];
+      assert(c[0] == 42 % 4);
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] >>= b[0];
+      assert(c[0] == (42 >> 4));
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] <<= b[0];
+      assert(c[0] == (42 << 4));
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] &= b[0];
+      assert(c[0] == (42 & 4));
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] |= b[0];
+      assert(c[0] == (42 | 4));
+      assert(c[1] == 42);
+    }
+    {
+      auto c = a;
+      c[0] ^= b[0];
+      assert(c[0] == (42 ^ 4));
+      assert(c[1] == 42);
+    }
+
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] += a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] -= a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] *= a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] /= a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] %= a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] >>= b[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] <<= b[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] &= a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] |= a[0]));
+    }
+    {
+      auto c = a;
+      (void)(a[0] + (c[0] ^= a[0]));
+    }
+  }
+  {
+    const SimdType a(42);
+    const SimdType b(4);
+    static_assert(std::is_same<decltype(a[0]), int>::value, "");
+
+    assert(a[0] == 42);
+    assert(!a[0] == !42);
+    assert(~a[0] == ~42);
+    assert(+a[0] == +42);
+    assert(-a[0] == -42);
+    assert(a[0] + b[0] == 42 + 4);
+    assert(a[0] - b[0] == 42 - 4);
+    assert(a[0] * b[0] == 42 * 4);
+    assert(a[0] / b[0] == 42 / 4);
+    assert(a[0] % b[0] == 42 % 4);
+    assert(a[0] << b[0] == (42 << 4));
+    assert(a[0] >> b[0] == (42 >> 4));
+    assert((a[0] < b[0]) == false);
+    assert((a[0] <= b[0]) == false);
+    assert((a[0] > b[0]) == true);
+    assert((a[0] >= b[0]) == true);
+    assert((a[0] == b[0]) == false);
+    assert((a[0] != b[0]) == true);
+    assert((a[0] & b[0]) == (42 & 4));
+    assert((a[0] | b[0]) == (42 | 4));
+    assert((a[0] ^ b[0]) == (42 ^ 4));
+    assert((a[0] && b[0]) == true);
+    assert((a[0] || b[0]) == true);
+  }
+}
+
+int main(int, char**) {
+  test_access<ex::native_simd<int>>();
+  test_access<ex::fixed_size_simd<int, 4>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.casts/simd_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.casts/simd_cast.pass.cpp
new file mode 100644
index 0000000..038af4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.casts/simd_cast.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.casts]
+// template <class T, class U, class Abi> see below ex::simd_cast<(const
+// ex::simd<U, Abi>&);
+
+#include <experimental/simd>
+#include <cstdint>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+static_assert(
+    std::is_same<decltype(ex::simd_cast<int32_t>(ex::native_simd<int32_t>())),
+                 ex::native_simd<int32_t>>::value,
+    "");
+
+static_assert(std::is_same<decltype(ex::simd_cast<int64_t>(
+                               ex::fixed_size_simd<int32_t, 4>())),
+                           ex::fixed_size_simd<int64_t, 4>>::value,
+              "");
+
+static_assert(
+    std::is_same<decltype(ex::simd_cast<ex::fixed_size_simd<int64_t, 1>>(
+                     ex::simd<int32_t, ex::simd_abi::scalar>())),
+                 ex::fixed_size_simd<int64_t, 1>>::value,
+    "");
+
+static_assert(
+    std::is_same<
+        decltype(ex::simd_cast<ex::simd<int64_t, ex::simd_abi::scalar>>(
+            ex::fixed_size_simd<int32_t, 1>())),
+        ex::simd<int64_t, ex::simd_abi::scalar>>::value,
+    "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.casts/static_simd_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.casts/static_simd_cast.pass.cpp
new file mode 100644
index 0000000..f74b165
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.casts/static_simd_cast.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.casts]
+// template <class T, class U, class Abi> see below ex::static_simd_cast<(const
+// ex::simd<U, Abi>&);
+
+#include <experimental/simd>
+#include <cstdint>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+static_assert(
+    std::is_same<decltype(ex::static_simd_cast<float>(ex::native_simd<int>())),
+                 ex::native_simd<float>>::value,
+    "");
+
+static_assert(
+    std::is_same<decltype(ex::static_simd_cast<ex::fixed_size_simd<float, 1>>(
+                     ex::simd<int, ex::simd_abi::scalar>())),
+                 ex::fixed_size_simd<float, 1>>::value,
+    "");
+
+static_assert(
+    std::is_same<
+        decltype(ex::static_simd_cast<ex::simd<float, ex::simd_abi::scalar>>(
+            ex::fixed_size_simd<int, 1>())),
+        ex::simd<float, ex::simd_abi::scalar>>::value,
+    "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/broadcast.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/broadcast.pass.cpp
new file mode 100644
index 0000000..94f9cb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/broadcast.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.class]
+// template <class U> simd(U&& value);
+
+#include <experimental/simd>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+template <class T, class... Args>
+auto not_supported_native_simd_ctor(Args&&... args)
+    -> decltype(ex::native_simd<T>(std::forward<Args>(args)...),
+                void()) = delete;
+
+template <class T>
+void not_supported_native_simd_ctor(...) {}
+
+template <class T, class... Args>
+auto supported_native_simd_ctor(Args&&... args)
+    -> decltype(ex::native_simd<T>(std::forward<Args>(args)...), void()) {}
+
+template <class T>
+void supported_native_simd_ctor(...) = delete;
+
+void compile_narrowing_conversion() {
+  supported_native_simd_ctor<int8_t>(3);
+  supported_native_simd_ctor<int16_t>(3);
+  supported_native_simd_ctor<int32_t>(3);
+  supported_native_simd_ctor<int64_t>(3);
+  supported_native_simd_ctor<uint8_t>(3);
+  supported_native_simd_ctor<uint16_t>(3);
+  supported_native_simd_ctor<uint32_t>(3);
+  supported_native_simd_ctor<uint64_t>(3);
+  supported_native_simd_ctor<float>(3.f);
+  supported_native_simd_ctor<double>(3.);
+  supported_native_simd_ctor<long double>(3.);
+
+  not_supported_native_simd_ctor<float>(3.);
+  not_supported_native_simd_ctor<int8_t>(long(3));
+  not_supported_native_simd_ctor<float>(long(3));
+  not_supported_native_simd_ctor<int>(3.);
+}
+
+void compile_convertible() {
+  struct ConvertibleToInt {
+    operator int64_t() const;
+  };
+  supported_native_simd_ctor<int64_t>(ConvertibleToInt());
+
+  struct NotConvertibleToInt {};
+  not_supported_native_simd_ctor<int64_t>(NotConvertibleToInt());
+}
+
+void compile_unsigned() {
+  not_supported_native_simd_ctor<int>(3u);
+  supported_native_simd_ctor<uint16_t>(3u);
+}
+
+template <typename SimdType>
+void test_broadcast() {
+  SimdType a(3);
+  for (size_t i = 0; i < a.size(); i++) {
+    assert(a[i] == 3);
+  }
+}
+
+int main(int, char**) {
+  test_broadcast<ex::native_simd<int>>();
+  test_broadcast<ex::fixed_size_simd<int, 4>>();
+  test_broadcast<ex::fixed_size_simd<int, 15>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/default.pass.cpp
new file mode 100644
index 0000000..feba23e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/default.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.class]
+// simd() = default;
+
+#include <cstdint>
+#include <experimental/simd>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+int main(int, char**) {
+  static_assert(ex::native_simd<int32_t>().size() > 0, "");
+  static_assert(ex::fixed_size_simd<int32_t, 4>().size() == 4, "");
+  static_assert(ex::fixed_size_simd<int32_t, 5>().size() == 5, "");
+  static_assert(ex::fixed_size_simd<int32_t, 1>().size() == 1, "");
+  static_assert(ex::fixed_size_simd<char, 32>().size() == 32, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/generator.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/generator.pass.cpp
new file mode 100644
index 0000000..ace829f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/generator.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.class]
+// template <class G> explicit simd(G&& gen);
+
+#include <experimental/simd>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+template <class T, class... Args>
+auto not_supported_simd128_ctor(Args&&... args) -> decltype(
+    ex::fixed_size_simd<T, 16 / sizeof(T)>(std::forward<Args>(args)...),
+    void()) = delete;
+
+template <class T>
+void not_supported_simd128_ctor(...) {}
+
+template <class T, class... Args>
+auto supported_simd128_ctor(Args&&... args) -> decltype(
+    ex::fixed_size_simd<T, 16 / sizeof(T)>(std::forward<Args>(args)...),
+    void()) {}
+
+template <class T>
+void supported_simd128_ctor(...) = delete;
+
+struct identity {
+  template <size_t value>
+  int operator()(std::integral_constant<size_t, value>) const {
+    return value;
+  }
+};
+
+void compile_generator() {
+  supported_simd128_ctor<int>(identity());
+  not_supported_simd128_ctor<int>([](int i) { return float(i); });
+  not_supported_simd128_ctor<int>([](intptr_t i) { return (int*)(i); });
+  not_supported_simd128_ctor<int>([](int* i) { return i; });
+}
+
+struct limited_identity {
+  template <size_t value>
+  typename std::conditional<value <= 2, int32_t, int64_t>::type
+  operator()(std::integral_constant<size_t, value>) const {
+    return value;
+  }
+};
+
+void compile_limited_identity() {
+  supported_simd128_ctor<int64_t>(limited_identity());
+  not_supported_simd128_ctor<int32_t>(limited_identity());
+}
+
+template <typename SimdType>
+void test_generator() {
+  {
+    SimdType a([](int i) { return i; });
+    assert(a[0] == 0);
+    assert(a[1] == 1);
+    assert(a[2] == 2);
+    assert(a[3] == 3);
+  }
+  {
+    SimdType a([](int i) { return 2 * i - 1; });
+    assert(a[0] == -1);
+    assert(a[1] == 1);
+    assert(a[2] == 3);
+    assert(a[3] == 5);
+  }
+}
+
+int main(int, char**) {
+  // TODO: adjust the tests when this assertion fails.
+  assert(ex::native_simd<int32_t>::size() >= 4);
+  test_generator<ex::native_simd<int32_t>>();
+  test_generator<ex::fixed_size_simd<int32_t, 4>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/load.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/load.pass.cpp
new file mode 100644
index 0000000..c4b352a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.cons/load.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.class]
+// template <class U, class Flags> simd(const U* mem, Flags f);
+
+#include <experimental/simd>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+template <class T, class... Args>
+auto not_supported_native_simd_ctor(Args&&... args)
+    -> decltype(ex::native_simd<T>(std::forward<Args>(args)...),
+                void()) = delete;
+
+template <class T>
+void not_supported_native_simd_ctor(...) {}
+
+template <class T, class... Args>
+auto supported_native_simd_ctor(Args&&... args)
+    -> decltype(ex::native_simd<T>(std::forward<Args>(args)...), void()) {}
+
+template <class T>
+void supported_native_simd_ctor(...) = delete;
+
+void compile_load_ctor() {
+  supported_native_simd_ctor<int>((int*)nullptr, ex::element_aligned_tag());
+  supported_native_simd_ctor<uint32_t>((int*)nullptr,
+                                       ex::element_aligned_tag());
+  supported_native_simd_ctor<double>((float*)nullptr,
+                                     ex::element_aligned_tag());
+  supported_native_simd_ctor<uint16_t>((unsigned int*)nullptr,
+                                       ex::element_aligned_tag());
+  supported_native_simd_ctor<uint32_t>((float*)nullptr,
+                                       ex::element_aligned_tag());
+
+  not_supported_native_simd_ctor<int>((int*)nullptr, int());
+}
+
+template <typename SimdType>
+void test_load_ctor() {
+  alignas(32) int32_t buffer[] = {4, 3, 2, 1};
+  {
+    SimdType a(buffer, ex::element_aligned_tag());
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a(buffer, ex::vector_aligned_tag());
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a(buffer, ex::overaligned_tag<32>());
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+
+  {
+    SimdType a(buffer, ex::element_aligned);
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a(buffer, ex::vector_aligned);
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a(buffer, ex::overaligned<32>);
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+}
+
+template <typename SimdType>
+void test_converting_load_ctor() {
+  float buffer[] = {1., 2., 4., 8.};
+  SimdType a(buffer, ex::element_aligned_tag());
+  assert(a[0] == 1);
+  assert(a[1] == 2);
+  assert(a[2] == 4);
+  assert(a[3] == 8);
+}
+
+int main(int, char**) {
+  // TODO: adjust the tests when this assertion fails.
+  assert(ex::native_simd<int32_t>::size() >= 4);
+  test_load_ctor<ex::native_simd<int32_t>>();
+  test_load_ctor<ex::fixed_size_simd<int32_t, 4>>();
+  test_converting_load_ctor<ex::native_simd<int32_t>>();
+  test_converting_load_ctor<ex::fixed_size_simd<int32_t, 4>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.mem/load.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.mem/load.pass.cpp
new file mode 100644
index 0000000..a888117
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.mem/load.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// loads [simd.load]
+// template <class U, class Flags> void copy_from(const U* mem, Flags f);
+
+#include <experimental/simd>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+template <class T, class... Args>
+auto not_supported_load(Args&&... args) -> decltype(
+    std::declval<ex::native_simd<T>>().copy_from(std::forward<Args>(args)...),
+    void()) = delete;
+
+template <class T>
+void not_supported_load(...) {}
+
+template <class T, class... Args>
+auto supported_load(Args&&... args) -> decltype(
+    std::declval<ex::native_simd<T>>().copy_from(std::forward<Args>(args)...),
+    void()) {}
+
+template <class T>
+void supported_load(...) = delete;
+
+void compile_load() {
+  supported_load<int>((int*)nullptr, ex::element_aligned_tag());
+  supported_load<uint32_t>((int*)nullptr, ex::element_aligned_tag());
+  supported_load<double>((float*)nullptr, ex::element_aligned_tag());
+  supported_load<uint16_t>((unsigned int*)nullptr, ex::element_aligned_tag());
+  supported_load<uint32_t>((float*)nullptr, ex::element_aligned_tag());
+
+  not_supported_load<int>((int*)nullptr, int());
+}
+
+template <typename SimdType>
+void test_load() {
+  alignas(32) int32_t buffer[] = {4, 3, 2, 1};
+  {
+    SimdType a;
+    a.copy_from(buffer, ex::element_aligned_tag());
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a;
+    a.copy_from(buffer, ex::vector_aligned_tag());
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a;
+    a.copy_from(buffer, ex::overaligned_tag<32>());
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+
+  {
+    SimdType a;
+    a.copy_from(buffer, ex::element_aligned);
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a;
+    a.copy_from(buffer, ex::vector_aligned);
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+  {
+    SimdType a;
+    a.copy_from(buffer, ex::overaligned<32>);
+    assert(a[0] == 4);
+    assert(a[1] == 3);
+    assert(a[2] == 2);
+    assert(a[3] == 1);
+  }
+}
+
+template <typename SimdType>
+void test_converting_load() {
+  float buffer[] = {1., 2., 4., 8.};
+  SimdType a;
+  a.copy_from(buffer, ex::element_aligned_tag());
+  assert(a[0] == 1);
+  assert(a[1] == 2);
+  assert(a[2] == 4);
+  assert(a[3] == 8);
+}
+
+int main(int, char**) {
+  // TODO: adjust the tests when this assertion fails.
+  assert(ex::native_simd<int32_t>::size() >= 4);
+  test_load<ex::native_simd<int32_t>>();
+  test_load<ex::fixed_size_simd<int32_t, 4>>();
+  test_converting_load<ex::native_simd<int32_t>>();
+  test_converting_load<ex::fixed_size_simd<int32_t, 4>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.mem/store.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.mem/store.pass.cpp
new file mode 100644
index 0000000..d3ead60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.mem/store.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// // stores [simd.store]
+// template <class U, class Flags> void copy_to(U* mem, Flags f) const;
+
+#include <experimental/simd>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+template <typename SimdType>
+void test_store() {
+  SimdType a([](int i) { return 4 - i; });
+  {
+    alignas(32) int32_t buffer[4] = {0};
+    a.copy_to(buffer, ex::element_aligned_tag());
+    assert(buffer[0] == 4);
+    assert(buffer[1] == 3);
+    assert(buffer[2] == 2);
+    assert(buffer[3] == 1);
+  }
+  {
+    alignas(32) int32_t buffer[4] = {0};
+    a.copy_to(buffer, ex::vector_aligned_tag());
+    assert(buffer[0] == 4);
+    assert(buffer[1] == 3);
+    assert(buffer[2] == 2);
+    assert(buffer[3] == 1);
+  }
+  {
+    alignas(32) int32_t buffer[4] = {0};
+    a.copy_to(buffer, ex::overaligned_tag<32>());
+    assert(buffer[0] == 4);
+    assert(buffer[1] == 3);
+    assert(buffer[2] == 2);
+    assert(buffer[3] == 1);
+  }
+
+  {
+    alignas(32) int32_t buffer[4] = {0};
+    a.copy_to(buffer, ex::element_aligned);
+    assert(buffer[0] == 4);
+    assert(buffer[1] == 3);
+    assert(buffer[2] == 2);
+    assert(buffer[3] == 1);
+  }
+  {
+    alignas(32) int32_t buffer[4] = {0};
+    a.copy_to(buffer, ex::vector_aligned);
+    assert(buffer[0] == 4);
+    assert(buffer[1] == 3);
+    assert(buffer[2] == 2);
+    assert(buffer[3] == 1);
+  }
+  {
+    alignas(32) int32_t buffer[4] = {0};
+    a.copy_to(buffer, ex::overaligned<32>);
+    assert(buffer[0] == 4);
+    assert(buffer[1] == 3);
+    assert(buffer[2] == 2);
+    assert(buffer[3] == 1);
+  }
+}
+
+template <typename SimdType>
+void test_converting_store() {
+  float buffer[4] = {0.};
+  SimdType a([](int i) { return 1 << i; });
+  a.copy_to(buffer, ex::element_aligned_tag());
+  assert(buffer[0] == 1.);
+  assert(buffer[1] == 2.);
+  assert(buffer[2] == 4.);
+  assert(buffer[3] == 8.);
+}
+
+int main(int, char**) {
+  // TODO: adjust the tests when this assertion fails.
+  test_store<ex::native_simd<int32_t>>();
+  test_store<ex::fixed_size_simd<int32_t, 4>>();
+  test_converting_store<ex::native_simd<int32_t>>();
+  test_converting_store<ex::fixed_size_simd<int32_t, 4>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/abi_for_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/abi_for_size.pass.cpp
new file mode 100644
index 0000000..116dc6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/abi_for_size.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.traits]
+// template <class T, size_t N> struct abi_for_size { using type = see below ;
+// }; template <class T, size_t N> using ex::abi_for_size_t = typename
+// ex::abi_for_size<T, N>::type;
+
+#include <cstdint>
+#include <experimental/simd>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+static_assert(std::is_same<typename ex::abi_for_size<int, 4>::type,
+                           ex::simd_abi::fixed_size<4>>::value,
+              "");
+
+static_assert(std::is_same<ex::abi_for_size_t<int, 4>,
+                           ex::simd_abi::fixed_size<4>>::value,
+              "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_abi_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_abi_tag.pass.cpp
new file mode 100644
index 0000000..cfe8167
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_abi_tag.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.traits]
+// template <class T> struct is_abi_tag;
+// template <class T> inline constexpr bool ex::is_abi_tag_v =
+// ex::is_abi_tag<T>::value;
+
+#include <cstdint>
+#include <experimental/simd>
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+struct UserType {};
+
+static_assert(ex::is_abi_tag<ex::simd_abi::native<int8_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<int16_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<int32_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<int64_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<uint8_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<uint16_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<uint32_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<uint64_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<float>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::native<double>>::value, "");
+
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<int8_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<int16_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<int32_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<int64_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<uint8_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<uint16_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<uint32_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<uint64_t>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<float>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::compatible<double>>::value, "");
+
+static_assert(ex::is_abi_tag<ex::simd_abi::scalar>::value, "");
+static_assert(
+    !std::is_same<ex::simd_abi::scalar, ex::simd_abi::fixed_size<1>>::value,
+    "");
+
+static_assert(ex::is_abi_tag<ex::simd_abi::fixed_size<1>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::fixed_size<2>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::fixed_size<3>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::fixed_size<4>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::fixed_size<5>>::value, "");
+static_assert(ex::is_abi_tag<ex::simd_abi::fixed_size<32>>::value, "");
+
+static_assert(!ex::is_abi_tag<void>::value, "");
+static_assert(!ex::is_abi_tag<int>::value, "");
+static_assert(!ex::is_abi_tag<float>::value, "");
+static_assert(!ex::is_abi_tag<UserType>::value, "");
+static_assert(!ex::is_abi_tag<ex::simd<int>>::value, "");
+static_assert(!ex::is_abi_tag<ex::simd<float>>::value, "");
+static_assert(!ex::is_abi_tag<ex::simd_mask<int>>::value, "");
+static_assert(!ex::is_abi_tag<ex::simd_mask<float>>::value, "");
+
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<int8_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<int16_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<int32_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<int64_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<uint8_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<uint16_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<uint32_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<uint64_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<float>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::native<double>>, "");
+
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<int8_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<int16_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<int32_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<int64_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<uint8_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<uint16_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<uint32_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<uint64_t>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<float>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::compatible<double>>, "");
+
+static_assert(ex::is_abi_tag_v<ex::simd_abi::scalar>, "");
+static_assert(
+    !std::is_same<ex::simd_abi::scalar, ex::simd_abi::fixed_size<1>>::value,
+    "");
+
+static_assert(ex::is_abi_tag_v<ex::simd_abi::fixed_size<1>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::fixed_size<2>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::fixed_size<3>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::fixed_size<4>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::fixed_size<5>>, "");
+static_assert(ex::is_abi_tag_v<ex::simd_abi::fixed_size<32>>, "");
+
+static_assert(!ex::is_abi_tag_v<void>, "");
+static_assert(!ex::is_abi_tag_v<int>, "");
+static_assert(!ex::is_abi_tag_v<float>, "");
+static_assert(!ex::is_abi_tag_v<UserType>, "");
+static_assert(!ex::is_abi_tag_v<ex::simd<int>>, "");
+static_assert(!ex::is_abi_tag_v<ex::simd<float>>, "");
+static_assert(!ex::is_abi_tag_v<ex::simd_mask<int>>, "");
+static_assert(!ex::is_abi_tag_v<ex::simd_mask<float>>, "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd.pass.cpp
new file mode 100644
index 0000000..6c7449e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.traits]
+// template <class T> struct ex::is_simd;
+// template <class T> inline constexpr bool ex::is_simd_v =
+// ex::is_simd<T>::value;
+
+#include <cstdint>
+#include <experimental/simd>
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+struct UserType {};
+
+static_assert(ex::is_simd<ex::native_simd<int8_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<int16_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<int32_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<int64_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<uint8_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<uint16_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<uint32_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<uint64_t>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<float>>::value, "");
+static_assert(ex::is_simd<ex::native_simd<double>>::value, "");
+
+static_assert(ex::is_simd<ex::fixed_size_simd<int8_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int16_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int32_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int64_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint8_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint16_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint32_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint64_t, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<float, 1>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<double, 1>>::value, "");
+
+static_assert(ex::is_simd<ex::fixed_size_simd<int8_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int16_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int32_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int64_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint8_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint16_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint32_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint64_t, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<float, 3>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<double, 3>>::value, "");
+
+static_assert(ex::is_simd<ex::fixed_size_simd<int8_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int16_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int32_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<int64_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint8_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint16_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint32_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<uint64_t, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<float, 32>>::value, "");
+static_assert(ex::is_simd<ex::fixed_size_simd<double, 32>>::value, "");
+
+static_assert(!ex::is_simd<void>::value, "");
+static_assert(!ex::is_simd<int>::value, "");
+static_assert(!ex::is_simd<float>::value, "");
+static_assert(!ex::is_simd<ex::simd_mask<int>>::value, "");
+static_assert(!ex::is_simd<ex::simd_mask<float>>::value, "");
+static_assert(!ex::is_simd<UserType>::value, "");
+
+static_assert(ex::is_simd_v<ex::native_simd<int8_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<int16_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<int32_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<int64_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<uint8_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<uint16_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<uint32_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<uint64_t>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<float>>, "");
+static_assert(ex::is_simd_v<ex::native_simd<double>>, "");
+
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int8_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int16_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int32_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int64_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint8_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint16_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint32_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint64_t, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<float, 1>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<double, 1>>, "");
+
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int8_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int16_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int32_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int64_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint8_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint16_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint32_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint64_t, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<float, 3>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<double, 3>>, "");
+
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int8_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int16_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int32_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<int64_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint8_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint16_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint32_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<uint64_t, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<float, 32>>, "");
+static_assert(ex::is_simd_v<ex::fixed_size_simd<double, 32>>, "");
+
+static_assert(!ex::is_simd_v<void>, "");
+static_assert(!ex::is_simd_v<int>, "");
+static_assert(!ex::is_simd_v<float>, "");
+static_assert(!ex::is_simd_v<ex::simd_mask<int>>, "");
+static_assert(!ex::is_simd_v<ex::simd_mask<float>>, "");
+static_assert(!ex::is_simd_v<UserType>, "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd_flag_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd_flag_type.pass.cpp
new file mode 100644
index 0000000..1e7b046
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd_flag_type.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.traits]
+// template <class T> struct is_simd_flag_type;
+// template <class T> inline constexpr bool ex::is_simd_flag_type_v =
+// ex::is_simd_flag_type<T>::value;
+
+#include <cstdint>
+#include <experimental/simd>
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+struct UserType {};
+
+static_assert(ex::is_simd_flag_type<ex::element_aligned_tag>::value, "");
+static_assert(ex::is_simd_flag_type<ex::vector_aligned_tag>::value, "");
+static_assert(ex::is_simd_flag_type<ex::overaligned_tag<16>>::value, "");
+static_assert(ex::is_simd_flag_type<ex::overaligned_tag<32>>::value, "");
+
+static_assert(!ex::is_simd_flag_type<void>::value, "");
+static_assert(!ex::is_simd_flag_type<int>::value, "");
+static_assert(!ex::is_simd_flag_type<float>::value, "");
+static_assert(!ex::is_simd_flag_type<UserType>::value, "");
+static_assert(!ex::is_simd_flag_type<ex::simd<int8_t>>::value, "");
+static_assert(!ex::is_simd_flag_type<ex::simd_mask<int8_t>>::value, "");
+
+static_assert(ex::is_simd_flag_type_v<ex::element_aligned_tag>, "");
+static_assert(ex::is_simd_flag_type_v<ex::vector_aligned_tag>, "");
+static_assert(ex::is_simd_flag_type_v<ex::overaligned_tag<16>>, "");
+static_assert(ex::is_simd_flag_type_v<ex::overaligned_tag<32>>, "");
+
+static_assert(!ex::is_simd_flag_type_v<void>, "");
+static_assert(!ex::is_simd_flag_type_v<int>, "");
+static_assert(!ex::is_simd_flag_type_v<float>, "");
+static_assert(!ex::is_simd_flag_type_v<UserType>, "");
+static_assert(!ex::is_simd_flag_type_v<ex::simd<int8_t>>, "");
+static_assert(!ex::is_simd_flag_type_v<ex::simd_mask<int8_t>>, "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd_mask.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd_mask.pass.cpp
new file mode 100644
index 0000000..a495af4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/simd/simd.traits/is_simd_mask.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <experimental/simd>
+//
+// [simd.traits]
+// template <class T> struct ex::is_simd_mask;
+// template <class T> inline constexpr bool ex::is_simd_mask_v =
+// ex::is_simd_mask<T>::value;
+
+#include <cstdint>
+#include <experimental/simd>
+#include "test_macros.h"
+
+namespace ex = std::experimental::parallelism_v2;
+
+struct UserType {};
+
+static_assert(ex::is_simd_mask<ex::native_simd_mask<int8_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<int16_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<int32_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<int64_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<uint8_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<uint16_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<uint32_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<uint64_t>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<float>>::value, "");
+static_assert(ex::is_simd_mask<ex::native_simd_mask<double>>::value, "");
+
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int8_t, 1>>::value, "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int16_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int32_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int64_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint8_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint16_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint32_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint64_t, 1>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<float, 1>>::value, "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<double, 1>>::value, "");
+
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int8_t, 3>>::value, "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int16_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int32_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int64_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint8_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint16_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint32_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint64_t, 3>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<float, 3>>::value, "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<double, 3>>::value, "");
+
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int8_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int16_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int32_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<int64_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint8_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint16_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint32_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<uint64_t, 32>>::value,
+              "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<float, 32>>::value, "");
+static_assert(ex::is_simd_mask<ex::fixed_size_simd_mask<double, 32>>::value,
+              "");
+
+static_assert(!ex::is_simd_mask<void>::value, "");
+static_assert(!ex::is_simd_mask<int>::value, "");
+static_assert(!ex::is_simd_mask<float>::value, "");
+static_assert(!ex::is_simd_mask<ex::simd<int>>::value, "");
+static_assert(!ex::is_simd_mask<ex::simd<float>>::value, "");
+static_assert(!ex::is_simd_mask<UserType>::value, "");
+
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<int8_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<int16_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<int32_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<int64_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<uint8_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<uint16_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<uint32_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<uint64_t>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<float>>, "");
+static_assert(ex::is_simd_mask_v<ex::native_simd_mask<double>>, "");
+
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int8_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int16_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int32_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int64_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint8_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint16_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint32_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint64_t, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<float, 1>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<double, 1>>, "");
+
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int8_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int16_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int32_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int64_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint8_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint16_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint32_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint64_t, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<float, 3>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<double, 3>>, "");
+
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int8_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int16_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int32_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<int64_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint8_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint16_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint32_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<uint64_t, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<float, 32>>, "");
+static_assert(ex::is_simd_mask_v<ex::fixed_size_simd_mask<double, 32>>, "");
+
+static_assert(!ex::is_simd_mask_v<void>, "");
+static_assert(!ex::is_simd_mask_v<int>, "");
+static_assert(!ex::is_simd_mask_v<float>, "");
+static_assert(!ex::is_simd_mask_v<ex::simd<int>>, "");
+static_assert(!ex::is_simd_mask_v<ex::simd<float>>, "");
+static_assert(!ex::is_simd_mask_v<UserType>, "");
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/detected_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/detected_or.pass.cpp
new file mode 100644
index 0000000..1928b7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/detected_or.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+template <typename T>
+  using hasFoo = typename T::Foo;
+
+struct yesFoo {
+    using Foo = int;
+};
+
+struct noFoo {
+};
+
+
+template <typename T, typename Res>
+void test() {
+    static_assert( std::is_same<Res, typename ex::detected_or  <double, hasFoo, T>::type>::value, "" );
+    static_assert( std::is_same<Res, typename ex::detected_or_t<double, hasFoo, T>      >::value, "" );
+}
+
+int main(int, char**) {
+    test<yesFoo, int>();
+    test<noFoo, double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/detected_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/detected_t.pass.cpp
new file mode 100644
index 0000000..b64b86f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/detected_t.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+template <typename T>
+  using callFoo = decltype(std::declval<T&>().Foo());
+
+struct yesFoo {
+    int Foo() { return 0; }
+};
+
+struct noFoo {
+};
+
+struct wrongFoo {
+    std::string Foo() { return ""; }
+};
+
+struct convertibleFoo {
+    long Foo() { return 0; }
+};
+
+
+template <typename T, typename Res>
+void test() {
+    static_assert( std::is_same<Res, typename ex::detected_t<callFoo, T>>::value, "" );
+}
+
+int main(int, char**) {
+    test<yesFoo, int>();
+    test<noFoo, ex::nonesuch>();  // lookup failure returns nonesuch
+    test<wrongFoo, std::string>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected.pass.cpp
new file mode 100644
index 0000000..4a97791
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+template <typename T>
+  using copy_assign_t = decltype(std::declval<T&>() = std::declval<T const &>());
+
+struct not_assignable {
+    not_assignable & operator=(const not_assignable&) = delete;
+};
+
+template <typename T, bool b>
+void test() {
+    static_assert( b == ex::is_detected  <copy_assign_t, T>::value, "" );
+    static_assert( b == ex::is_detected_v<copy_assign_t, T>, "" );
+}
+
+int main(int, char**) {
+    test<int, true>();
+    test<std::string, true>();
+    test<not_assignable, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected_convertible.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected_convertible.pass.cpp
new file mode 100644
index 0000000..6906461
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected_convertible.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+template <typename T>
+  using callFoo = decltype(std::declval<T&>().Foo());
+
+struct yesFoo {
+    int Foo() { return 0; }
+};
+
+struct noFoo {
+};
+
+struct wrongFoo {
+    std::string Foo() { return ""; }
+};
+
+struct convertibleFoo {
+    long Foo() { return 0; }
+};
+
+
+template <typename T, bool b>
+void test() {
+    static_assert( b == ex::is_detected_convertible  <int, callFoo, T>::value, "" );
+    static_assert( b == ex::is_detected_convertible_v<int, callFoo, T>, "" );
+}
+
+int main(int, char**) {
+    test<yesFoo, true>();
+    test<noFoo, false>();
+    test<wrongFoo, false>();
+    test<convertibleFoo, true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected_exact.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected_exact.pass.cpp
new file mode 100644
index 0000000..500187e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/is_detected_exact.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+template <typename T>
+  using callFoo = decltype(std::declval<T&>().Foo());
+
+struct yesFoo {
+    int Foo() { return 0; }
+};
+
+struct noFoo {
+};
+
+struct wrongFoo {
+    std::string Foo() { return ""; }
+};
+
+struct convertibleFoo {
+    long Foo() { return 0; }
+};
+
+template <typename T, bool b>
+void test() {
+    static_assert( b == ex::is_detected_exact  <int, callFoo, T>::value, "" );
+    static_assert( b == ex::is_detected_exact_v<int, callFoo, T>, "" );
+}
+
+int main(int, char**) {
+    test<yesFoo, true>();
+    test<noFoo, false>();
+    test<wrongFoo, false>();
+    test<convertibleFoo, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.fail.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.fail.cpp
new file mode 100644
index 0000000..69768c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+//
+//  struct nonesuch;
+//    nonesuch has no default constructor (C++17 section 15.1)
+//    or initializer-list constructor (C++17 section 11.6.4),
+//    and is not an aggregate (C++17 section 11.6.1).
+
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+void doSomething (const ex::nonesuch &) {}
+
+int main(int, char**) {
+    ex::nonesuch *e0 = new ex::nonesuch; // expected-error {{no matching constructor for initialization of 'ex::nonesuch'}}
+    doSomething({}); // expected-error{{no matching function for call to 'doSomething'}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.pass.cpp
new file mode 100644
index 0000000..5a2bdfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/meta/meta.detect/nonesuch.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <experimental/type_traits>
+//
+//  struct nonesuch
+
+#include <experimental/type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+namespace ex = std::experimental;
+
+struct such {};
+void foo(const such &) {}
+void foo(const ex::nonesuch &) {}
+
+int main(int, char**) {
+    foo({});  // nonesuch is not an aggregate
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign.pass.cpp
new file mode 100644
index 0000000..0d47fbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const& propagate_const::operator=(const propagate_const<U>&)=delete;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+int main(int, char**) { static_assert(!std::is_assignable<P, const P &>::value, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_element_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_element_type.pass.cpp
new file mode 100644
index 0000000..cc14945
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_element_type.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const& propagate_const::operator=(U&&);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<CopyConstructibleFromX> PY;
+
+  X x1(1);
+  PY p(2);
+
+  assert(*p==2);
+
+  p = x1;
+
+  assert(*p==1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_propagate_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_propagate_const.pass.cpp
new file mode 100644
index 0000000..478c05a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_convertible_propagate_const.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const& operator=(U&& u); // won't bind to propagate_const
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> PX;
+typedef propagate_const<CopyConstructibleFromX> PY;
+
+int main(int, char**) { static_assert(!std::is_assignable<PY, const PX &>::value, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_element_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_element_type.pass.cpp
new file mode 100644
index 0000000..8823783
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/assign_element_type.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const& propagate_const::operator=(U&&);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  X x1(1);
+  P p(2);
+
+  assert(*p==2);
+
+  p = x1;
+
+  assert(*p==1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign.pass.cpp
new file mode 100644
index 0000000..8614ff8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const& propagate_const::operator=(propagate_const<U>&&);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1(1);
+  P p2(2);
+
+  p2=std::move(p1);
+
+  assert(*p2==1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign_convertible.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign_convertible.pass.cpp
new file mode 100644
index 0000000..2e4d1e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign_convertible.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const& propagate_const::operator=(propagate_const<U>&&);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> PX;
+  typedef propagate_const<MoveConstructibleFromX> PY;
+
+  PX px2(2);
+  PY py1(1);
+
+  py1=std::move(px2);
+
+  assert(*py1==2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign_convertible_propagate_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign_convertible_propagate_const.pass.cpp
new file mode 100644
index 0000000..d587cb0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.assignment/move_assign_convertible_propagate_const.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const& operator=(propagate_const<_Up>&& pu);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> PX;
+  typedef propagate_const<MoveConstructibleFromX> PY;
+
+  PX px2(2);
+  PY py1(1);
+
+  py1=std::move(px2);
+
+  assert(*py1==2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_element_type.explicit.ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_element_type.explicit.ctor.pass.cpp
new file mode 100644
index 0000000..a63e785
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_element_type.explicit.ctor.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const& operator=(propagate_const<_Up>&& pu);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<ExplicitCopyConstructibleFromX> P;
+
+int main(int, char**) {
+  static_assert(!std::is_convertible<P, X>::value, "");
+  static_assert(std::is_constructible<P, X>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_element_type.non-explicit.ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_element_type.non-explicit.ctor.pass.cpp
new file mode 100644
index 0000000..145851c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_element_type.non-explicit.ctor.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const(propagate_const<_Up>&& pu);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<CopyConstructibleFromX> P;
+
+void f(const P& p)
+{
+  assert(*p==2);
+}
+
+int main(int, char**) {
+  f(X(2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.copy_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.copy_ctor.pass.cpp
new file mode 100644
index 0000000..cd94a55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.copy_ctor.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const& operator(propagate_const<_Up>&& pu);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> PX;
+typedef propagate_const<CopyConstructibleFromX> PY;
+
+int main(int, char**) { static_assert(!std::is_constructible<PX, PY>::value, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.explicit.move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.explicit.move_ctor.pass.cpp
new file mode 100644
index 0000000..edca24a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.explicit.move_ctor.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const(propagate_const<_Up>&& pu);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> PX;
+typedef propagate_const<ExplicitMoveConstructibleFromX> PY;
+
+int main(int, char**) {
+  static_assert(!std::is_convertible<PY, PX &&>::value, "");
+  static_assert(std::is_constructible<PY, PX &&>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.move_ctor.pass.cpp
new file mode 100644
index 0000000..81d874f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/convertible_propagate_const.move_ctor.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> constexpr propagate_const(propagate_const<_Up>&& pu);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<MoveConstructibleFromX> PY;
+typedef propagate_const<X> PX;
+
+int main(int, char**) {
+  PX px(1);
+  PY py(std::move(px));
+
+  assert(*py==1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/copy_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/copy_ctor.pass.cpp
new file mode 100644
index 0000000..b4e3278
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/copy_ctor.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// propagate_const(const propagate_const&)=delete;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+int main(int, char**) { static_assert(!std::is_constructible<P, const P &>::value, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/element_type.explicit.ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/element_type.explicit.ctor.pass.cpp
new file mode 100644
index 0000000..1a1e362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/element_type.explicit.ctor.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const(U&&);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<ExplicitX> P;
+
+int main(int, char**) {
+  static_assert(!std::is_convertible<P, int>::value, "");
+  static_assert(std::is_constructible<P, int>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/element_type.non-explicit.ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/element_type.non-explicit.ctor.pass.cpp
new file mode 100644
index 0000000..75c6a21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/element_type.non-explicit.ctor.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class U> propagate_const(U&&);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+void f(const P&)
+{
+}
+
+int main(int, char**) { f(2);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/move_ctor.pass.cpp
new file mode 100644
index 0000000..dbf2ef0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.ctors/move_ctor.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// propagate_const(propagate_const&&)=default;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1(2);
+  P p2(std::move(p1));
+  assert(*p2 == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/dereference.pass.cpp
new file mode 100644
index 0000000..84318c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/dereference.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// element_type& propagate_const::operator*();
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+constexpr P f()
+{
+  P p(1);
+  *p = 2;
+  return p;
+}
+
+int main(int, char**) {
+  constexpr P p = f();
+  static_assert(*p==2,"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/explicit_operator_element_type_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/explicit_operator_element_type_ptr.pass.cpp
new file mode 100644
index 0000000..cd4300c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/explicit_operator_element_type_ptr.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// propagate_const::operator element_type*();
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+int main(int, char**) { static_assert(!std::is_convertible<P, int *>::value, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/get.pass.cpp
new file mode 100644
index 0000000..80cdb79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/get.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// element_type* propagate_const::get();
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+constexpr P f()
+{
+  P p(1);
+  *p.get() = 2;
+  return p;
+}
+
+int main(int, char**) {
+  constexpr P p = f();
+  static_assert(*(p.get())==2,"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/op_arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/op_arrow.pass.cpp
new file mode 100644
index 0000000..5e55e4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/op_arrow.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// element_type* propagate_const::operator->();
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+constexpr P f()
+{
+  P p(1);
+  *(p.operator->()) = 2;
+  return p;
+}
+
+int main(int, char**) {
+  constexpr P p = f();
+  static_assert(*(p.operator->())==2,"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/operator_element_type_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/operator_element_type_ptr.pass.cpp
new file mode 100644
index 0000000..a4c47d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.non-const_observers/operator_element_type_ptr.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// propagate_const::operator element_type*();
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<XWithImplicitIntStarConversion> P;
+
+  P p(1);
+
+  int* ptr_1 = p;
+
+  assert(*ptr_1==1);
+
+  *ptr_1 = 2;
+
+  assert(*ptr_1==2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/dereference.pass.cpp
new file mode 100644
index 0000000..e57ebd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/dereference.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// const element_type& propagate_const::operator*() const;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  constexpr P p(1);
+
+  static_assert(*p==1,"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/explicit_operator_element_type_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/explicit_operator_element_type_ptr.pass.cpp
new file mode 100644
index 0000000..d4c0141
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/explicit_operator_element_type_ptr.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// propagate_const::operator const element_type*() const;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <type_traits>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<X> P;
+
+int main(int, char**) {
+  static_assert(!std::is_convertible<const P, const int *>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/get.pass.cpp
new file mode 100644
index 0000000..b476c1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/get.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// const element_type* propagate_const::get() const;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  constexpr P p(1);
+
+  static_assert(*(p.get())==1, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/op_arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/op_arrow.pass.cpp
new file mode 100644
index 0000000..206daa9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/op_arrow.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// const element_type* propagate_const::operator->() const;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  constexpr P p(1);
+
+  static_assert(*(p.operator->())==1,"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/operator_element_type_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/operator_element_type_ptr.pass.cpp
new file mode 100644
index 0000000..6bf1d6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/propagate_const.observers/operator_element_type_ptr.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// propagate_const::operator const element_type*() const;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+typedef propagate_const<XWithImplicitConstIntStarConversion> P;
+
+constexpr P p(1);
+
+constexpr const int *ptr_1 = p;
+
+int main(int, char**) { assert(*ptr_1 == 1);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/swap.pass.cpp
new file mode 100644
index 0000000..322ec2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.class/swap.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr void propagate_const::swap(propagate_const<T>& x);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+bool swap_called = false;
+void swap(X &, X &) { swap_called = true; }
+
+int main(int, char**) {
+  typedef propagate_const<X> P;
+  P p1(1);
+  P p2(2);
+  p1.swap(p2);
+  assert(swap_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/hash.pass.cpp
new file mode 100644
index 0000000..01db1a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/hash.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct hash<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+namespace std {
+template <> struct hash<X>
+{
+  typedef X first_argument_type;
+
+  size_t operator()(const first_argument_type&) const
+  {
+    return 99;
+  }
+
+};
+} // namespace std
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p(1);
+
+  auto h = std::hash<P>();
+
+  assert(h(p)==99);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/equal_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/equal_to.pass.cpp
new file mode 100644
index 0000000..16bb27e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/equal_to.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct equal_to<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator==(const X &x1, const X &x2) { return x1.i_ == x2.i_; }
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1_1(1);
+  P p2_1(1);
+  P p3_2(2);
+
+  auto c = std::equal_to<P>();
+
+  assert(c(p1_1,p2_1));
+  assert(!c(p1_1,p3_2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/greater.pass.cpp
new file mode 100644
index 0000000..ba104b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/greater.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct greater<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator>(const X &x1, const X &x2) { return x1.i_ > x2.i_; }
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1_1(1);
+  P p2_1(1);
+  P p3_2(2);
+
+  auto c = std::greater<P>();
+
+  assert(!c(p1_1,p2_1));
+  assert(!c(p2_1,p1_1));
+  assert(!c(p1_1,p3_2));
+  assert(c(p3_2,p1_1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/greater_equal.pass.cpp
new file mode 100644
index 0000000..d256a4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/greater_equal.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct greater_equal<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator>=(const X &x1, const X &x2) { return x1.i_ >= x2.i_; }
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1_1(1);
+  P p2_1(1);
+  P p3_2(2);
+
+  auto c = std::greater_equal<P>();
+
+  assert(c(p1_1,p2_1));
+  assert(c(p2_1,p1_1));
+  assert(!c(p1_1,p3_2));
+  assert(c(p3_2,p1_1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/less.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/less.pass.cpp
new file mode 100644
index 0000000..c723be4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/less.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct less<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator<(const X &x1, const X &x2) { return x1.i_ < x2.i_; }
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1_1(1);
+  P p2_1(1);
+  P p3_2(2);
+
+  auto c = std::less<P>();
+
+  assert(!c(p1_1,p2_1));
+  assert(!c(p2_1,p1_1));
+  assert(c(p1_1,p3_2));
+  assert(!c(p3_2,p1_1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/less_equal.pass.cpp
new file mode 100644
index 0000000..1960b3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/less_equal.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct less_equal<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator<=(const X &x1, const X &x2) { return x1.i_ <= x2.i_; }
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1_1(1);
+  P p2_1(1);
+  P p3_2(2);
+
+  auto c = std::less_equal<P>();
+
+  assert(c(p1_1,p2_1));
+  assert(c(p2_1,p1_1));
+  assert(c(p1_1,p3_2));
+  assert(!c(p3_2,p1_1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/not_equal_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/not_equal_to.pass.cpp
new file mode 100644
index 0000000..95869e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.comparison_function_objects/not_equal_to.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> struct not_equal_to<experimental::fundamentals_v2::propagate_const<T>>;
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator!=(const X &x1, const X &x2) { return x1.i_ != x2.i_; }
+
+int main(int, char**) {
+
+  typedef propagate_const<X> P;
+
+  P p1_1(1);
+  P p2_1(1);
+  P p3_2(2);
+
+  auto c = std::not_equal_to<P>();
+
+  assert(!c(p1_1,p2_1));
+  assert(c(p1_1,p3_2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/equal.pass.cpp
new file mode 100644
index 0000000..0c19253
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/equal.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr bool operator==(const propagate_const<T>& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator==(const T& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator==(const propagate_const<T>& x, const T& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+using std::nullptr_t;
+
+constexpr bool operator==(const X &lhs, const X &rhs) {
+  return lhs.i_ == rhs.i_;
+}
+
+constexpr bool operator==(const X &, const nullptr_t &) {
+  return false;
+}
+
+constexpr bool operator==(const nullptr_t &, const X &) {
+  return false;
+}
+
+int main(int, char**) {
+  constexpr X x1_1(1);
+  constexpr X x2_1(1);
+  constexpr X x3_2(2);
+
+  static_assert(x1_1 == x1_1, "");
+  static_assert(x1_1 == x2_1, "");
+  static_assert(!(x1_1 == x3_2), "");
+
+  typedef propagate_const<X> P;
+
+  constexpr P p1_1(1);
+  constexpr P p2_1(1);
+  constexpr P p3_2(2);
+
+  static_assert(p1_1 == p1_1, "");
+  static_assert(p1_1 == p2_1, "");
+  static_assert(!(p1_1 == p3_2), "");
+
+  static_assert(x1_1 == p1_1, "");
+  static_assert(!(x1_1 == p3_2), "");
+
+  static_assert(p1_1 == x1_1, "");
+  static_assert(!(p1_1 == x3_2), "");
+
+  static_assert(!(p1_1==nullptr),"");
+  static_assert(!(nullptr==p1_1),"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/greater_equal.pass.cpp
new file mode 100644
index 0000000..56e911a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/greater_equal.pass.cpp
@@ -0,0 +1,56 @@
+//>==---------------------------------------------------------------------->==//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//>==---------------------------------------------------------------------->==//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr bool operator>=(const propagate_const<T>& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator>=(const T& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator>=(const propagate_const<T>& x, const T& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator>=(const X &lhs, const X &rhs) {
+  return lhs.i_ >= rhs.i_;
+}
+
+int main(int, char**) {
+  constexpr X x1_1(1);
+  constexpr X x2_1(1);
+  constexpr X x3_2(2);
+
+  static_assert(x1_1 >= x2_1, "");
+  static_assert(!(x1_1 >= x3_2), "");
+  static_assert(x3_2 >= x1_1, "");
+
+  typedef propagate_const<X> P;
+
+  constexpr P p1_1(1);
+  constexpr P p2_1(1);
+  constexpr P p3_2(2);
+
+  static_assert(p1_1 >= p2_1, "");
+  static_assert(!(p1_1 >= p3_2), "");
+  static_assert(p3_2 >= p1_1, "");
+
+  static_assert(p1_1 >= x2_1, "");
+  static_assert(!(p1_1 >= x3_2), "");
+  static_assert(p3_2 >= x1_1, "");
+
+  static_assert(x1_1 >= p2_1, "");
+  static_assert(!(x1_1 >= p3_2), "");
+  static_assert(x3_2 >= p1_1, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/greater_than.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/greater_than.pass.cpp
new file mode 100644
index 0000000..5a36193
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/greater_than.pass.cpp
@@ -0,0 +1,52 @@
+//>=---------------------------------------------------------------------->=//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//>=---------------------------------------------------------------------->=//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr bool operator>(const propagate_const<T>& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator>(const T& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator>(const propagate_const<T>& x, const T& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator>(const X &lhs, const X &rhs) {
+  return lhs.i_ > rhs.i_;
+}
+
+int main(int, char**) {
+  constexpr X x1_1(1);
+  constexpr X x2_1(1);
+  constexpr X x3_2(2);
+
+  static_assert(!(x1_1 > x2_1), "");
+  static_assert(x3_2 > x1_1, "");
+
+  typedef propagate_const<X> P;
+
+  constexpr P p1_1(1);
+  constexpr P p2_1(1);
+  constexpr P p3_2(2);
+
+  static_assert(!(p1_1 > p2_1), "");
+  static_assert(p3_2 > p1_1, "");
+
+  static_assert(!(p1_1 > x2_1), "");
+  static_assert(p3_2 > x1_1, "");
+
+  static_assert(!(x1_1 > p2_1), "");
+  static_assert(x3_2 > p1_1, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/less_equal.pass.cpp
new file mode 100644
index 0000000..d8a3a30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/less_equal.pass.cpp
@@ -0,0 +1,57 @@
+//<==----------------------------------------------------------------------<==//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//<==----------------------------------------------------------------------<==//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr bool operator<=(const propagate_const<T>& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator<=(const T& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator<=(const propagate_const<T>& x, const T& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator<=(const X &lhs, const X &rhs) {
+  return lhs.i_ <= rhs.i_;
+}
+
+int main(int, char**) {
+  constexpr X x1_1(1);
+  constexpr X x2_1(1);
+  constexpr X x3_2(2);
+
+  static_assert(x1_1 <= x2_1, "");
+  static_assert(x1_1 <= x3_2, "");
+  static_assert(!(x3_2 <= x1_1), "");
+
+  typedef propagate_const<X> P;
+
+  constexpr P p1_1(1);
+  constexpr P p2_1(1);
+  constexpr P p3_2(2);
+
+  static_assert(p1_1 <= p2_1, "");
+  static_assert(p1_1 <= p3_2, "");
+  static_assert(!(p3_2 <= p1_1), "");
+
+  static_assert(p1_1 <= x2_1, "");
+  static_assert(p1_1 <= x3_2, "");
+  static_assert(!(p3_2 <= x1_1), "");
+
+  static_assert(x1_1 <= p2_1, "");
+  static_assert(x1_1 <= p3_2, "");
+  static_assert(!(x3_2 <= p1_1), "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/less_than.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/less_than.pass.cpp
new file mode 100644
index 0000000..3bfd9e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/less_than.pass.cpp
@@ -0,0 +1,52 @@
+//<=----------------------------------------------------------------------<=//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//<=----------------------------------------------------------------------<=//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr bool operator<(const propagate_const<T>& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator<(const T& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator<(const propagate_const<T>& x, const T& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+constexpr bool operator<(const X &lhs, const X &rhs) {
+  return lhs.i_ < rhs.i_;
+}
+
+int main(int, char**) {
+  constexpr X x1_1(1);
+  constexpr X x2_1(1);
+  constexpr X x3_2(2);
+
+  static_assert(!(x1_1 < x2_1), "");
+  static_assert(x1_1 < x3_2, "");
+
+  typedef propagate_const<X> P;
+
+  constexpr P p1_1(1);
+  constexpr P p2_1(1);
+  constexpr P p3_2(2);
+
+  static_assert(!(p1_1 < p2_1), "");
+  static_assert(p1_1 < p3_2, "");
+
+  static_assert(!(x1_1 < p1_1), "");
+  static_assert(x1_1 < p3_2, "");
+
+  static_assert(!(p1_1 < x1_1), "");
+  static_assert(p1_1 < x3_2, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/not_equal.pass.cpp
new file mode 100644
index 0000000..a3b85b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/propagate_const.relops/not_equal.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr bool operator!=(const propagate_const<T>& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator!=(const T& x, const propagate_const<T>& y);
+// template <class T> constexpr bool operator!=(const propagate_const<T>& x, const T& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+using std::nullptr_t;
+
+constexpr bool operator!=(const X &lhs, const X &rhs) {
+  return lhs.i_ != rhs.i_;
+}
+
+constexpr bool operator!=(const X &, const nullptr_t &) {
+  return true;
+}
+
+constexpr bool operator!=(const nullptr_t &, const X &) {
+  return true;
+}
+
+int main(int, char**) {
+  constexpr X x1_1(1);
+  constexpr X x2_1(1);
+  constexpr X x3_2(2);
+
+  static_assert(!(x1_1 != x2_1), "");
+  static_assert(x1_1 != x3_2, "");
+
+  typedef propagate_const<X> P;
+
+  constexpr P p1_1(1);
+  constexpr P p2_1(1);
+  constexpr P p3_2(2);
+
+  static_assert(!(p1_1 != p2_1), "");
+  static_assert(p1_1 != p3_2, "");
+
+  static_assert(!(x1_1 != p1_1), "");
+  static_assert(x1_1 != p3_2, "");
+
+  static_assert(!(p1_1 != x1_1), "");
+  static_assert(p1_1 != x3_2, "");
+
+  static_assert(p1_1!=nullptr,"");
+  static_assert(nullptr!=p1_1,"");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/swap.pass.cpp
new file mode 100644
index 0000000..e37173a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/propagate_const/propagate_const.nonmembers/swap.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <propagate_const>
+
+// template <class T> constexpr void swap(propagate_const<T>& x, propagate_const<T>& y);
+
+#include <experimental/propagate_const>
+#include "test_macros.h"
+#include "propagate_const_helpers.h"
+#include <cassert>
+
+using std::experimental::propagate_const;
+
+bool swap_called = false;
+void swap(X &, X &) { swap_called = true; }
+
+int main(int, char**) {
+  typedef propagate_const<X> P;
+  P p1(1);
+  P p2(2);
+  swap(p1, p2);
+  assert(swap_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/utility/utility.erased.type/erased_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/utility/utility.erased.type/erased_type.pass.cpp
new file mode 100644
index 0000000..3f22434
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/utility/utility.erased.type/erased_type.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <experimental/utility>
+
+#include <experimental/utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::experimental::erased_type e;
+  ((void)e);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/experimental/utilities/utility/utility.synop/includes.pass.cpp b/app/src/main/cpp/libcxx/test/std/experimental/utilities/utility/utility.synop/includes.pass.cpp
new file mode 100644
index 0000000..7e27adf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/experimental/utilities/utility/utility.synop/includes.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <experimental/utility>
+
+#include <experimental/utility>
+
+#include "test_macros.h"
+
+#ifndef _LIBCPP_UTILITY
+#   error "<experimental/utility> must include <utility>"
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/cinttypes.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/cinttypes.pass.cpp
new file mode 100644
index 0000000..6b76efd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/cinttypes.pass.cpp
@@ -0,0 +1,936 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cinttypes>
+
+#include <cinttypes>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef INT8_MIN
+#error INT8_MIN not defined
+#endif
+
+#ifndef INT16_MIN
+#error INT16_MIN not defined
+#endif
+
+#ifndef INT32_MIN
+#error INT32_MIN not defined
+#endif
+
+#ifndef INT64_MIN
+#error INT64_MIN not defined
+#endif
+
+#ifndef INT8_MAX
+#error INT8_MAX not defined
+#endif
+
+#ifndef INT16_MAX
+#error INT16_MAX not defined
+#endif
+
+#ifndef INT32_MAX
+#error INT32_MAX not defined
+#endif
+
+#ifndef INT64_MAX
+#error INT64_MAX not defined
+#endif
+
+#ifndef UINT8_MAX
+#error UINT8_MAX not defined
+#endif
+
+#ifndef UINT16_MAX
+#error UINT16_MAX not defined
+#endif
+
+#ifndef UINT32_MAX
+#error UINT32_MAX not defined
+#endif
+
+#ifndef UINT64_MAX
+#error UINT64_MAX not defined
+#endif
+
+#ifndef INT_LEAST8_MIN
+#error INT_LEAST8_MIN not defined
+#endif
+
+#ifndef INT_LEAST16_MIN
+#error INT_LEAST16_MIN not defined
+#endif
+
+#ifndef INT_LEAST32_MIN
+#error INT_LEAST32_MIN not defined
+#endif
+
+#ifndef INT_LEAST64_MIN
+#error INT_LEAST64_MIN not defined
+#endif
+
+#ifndef INT_LEAST8_MAX
+#error INT_LEAST8_MAX not defined
+#endif
+
+#ifndef INT_LEAST16_MAX
+#error INT_LEAST16_MAX not defined
+#endif
+
+#ifndef INT_LEAST32_MAX
+#error INT_LEAST32_MAX not defined
+#endif
+
+#ifndef INT_LEAST64_MAX
+#error INT_LEAST64_MAX not defined
+#endif
+
+#ifndef UINT_LEAST8_MAX
+#error UINT_LEAST8_MAX not defined
+#endif
+
+#ifndef UINT_LEAST16_MAX
+#error UINT_LEAST16_MAX not defined
+#endif
+
+#ifndef UINT_LEAST32_MAX
+#error UINT_LEAST32_MAX not defined
+#endif
+
+#ifndef UINT_LEAST64_MAX
+#error UINT_LEAST64_MAX not defined
+#endif
+
+#ifndef INT_FAST8_MIN
+#error INT_FAST8_MIN not defined
+#endif
+
+#ifndef INT_FAST16_MIN
+#error INT_FAST16_MIN not defined
+#endif
+
+#ifndef INT_FAST32_MIN
+#error INT_FAST32_MIN not defined
+#endif
+
+#ifndef INT_FAST64_MIN
+#error INT_FAST64_MIN not defined
+#endif
+
+#ifndef INT_FAST8_MAX
+#error INT_FAST8_MAX not defined
+#endif
+
+#ifndef INT_FAST16_MAX
+#error INT_FAST16_MAX not defined
+#endif
+
+#ifndef INT_FAST32_MAX
+#error INT_FAST32_MAX not defined
+#endif
+
+#ifndef INT_FAST64_MAX
+#error INT_FAST64_MAX not defined
+#endif
+
+#ifndef UINT_FAST8_MAX
+#error UINT_FAST8_MAX not defined
+#endif
+
+#ifndef UINT_FAST16_MAX
+#error UINT_FAST16_MAX not defined
+#endif
+
+#ifndef UINT_FAST32_MAX
+#error UINT_FAST32_MAX not defined
+#endif
+
+#ifndef UINT_FAST64_MAX
+#error UINT_FAST64_MAX not defined
+#endif
+
+#ifndef INTPTR_MIN
+#error INTPTR_MIN not defined
+#endif
+
+#ifndef INTPTR_MAX
+#error INTPTR_MAX not defined
+#endif
+
+#ifndef UINTPTR_MAX
+#error UINTPTR_MAX not defined
+#endif
+
+#ifndef INTMAX_MIN
+#error INTMAX_MIN not defined
+#endif
+
+#ifndef INTMAX_MAX
+#error INTMAX_MAX not defined
+#endif
+
+#ifndef UINTMAX_MAX
+#error UINTMAX_MAX not defined
+#endif
+
+#ifndef PTRDIFF_MIN
+#error PTRDIFF_MIN not defined
+#endif
+
+#ifndef PTRDIFF_MAX
+#error PTRDIFF_MAX not defined
+#endif
+
+#ifndef SIG_ATOMIC_MIN
+#error SIG_ATOMIC_MIN not defined
+#endif
+
+#ifndef SIG_ATOMIC_MAX
+#error SIG_ATOMIC_MAX not defined
+#endif
+
+#ifndef SIZE_MAX
+#error SIZE_MAX not defined
+#endif
+
+#ifndef WCHAR_MIN
+#error WCHAR_MIN not defined
+#endif
+
+#ifndef WCHAR_MAX
+#error WCHAR_MAX not defined
+#endif
+
+#ifndef WINT_MIN
+#error WINT_MIN not defined
+#endif
+
+#ifndef WINT_MAX
+#error WINT_MAX not defined
+#endif
+
+#ifndef INT8_C
+#error INT8_C not defined
+#endif
+
+#ifndef INT16_C
+#error INT16_C not defined
+#endif
+
+#ifndef INT32_C
+#error INT32_C not defined
+#endif
+
+#ifndef INT64_C
+#error INT64_C not defined
+#endif
+
+#ifndef UINT8_C
+#error UINT8_C not defined
+#endif
+
+#ifndef UINT16_C
+#error UINT16_C not defined
+#endif
+
+#ifndef UINT32_C
+#error UINT32_C not defined
+#endif
+
+#ifndef UINT64_C
+#error UINT64_C not defined
+#endif
+
+#ifndef INTMAX_C
+#error INTMAX_C not defined
+#endif
+
+#ifndef UINTMAX_C
+#error UINTMAX_C not defined
+#endif
+
+#ifndef PRId8
+#error PRId8 not defined
+#endif
+
+#ifndef PRId16
+#error PRId16 not defined
+#endif
+
+#ifndef PRId32
+#error PRId32 not defined
+#endif
+
+#ifndef PRId64
+#error PRId64 not defined
+#endif
+
+#ifndef PRIdLEAST8
+#error PRIdLEAST8 not defined
+#endif
+
+#ifndef PRIdLEAST16
+#error PRIdLEAST16 not defined
+#endif
+
+#ifndef PRIdLEAST32
+#error PRIdLEAST32 not defined
+#endif
+
+#ifndef PRIdLEAST64
+#error PRIdLEAST64 not defined
+#endif
+
+#ifndef PRIdFAST8
+#error PRIdFAST8 not defined
+#endif
+
+#ifndef PRIdFAST16
+#error PRIdFAST16 not defined
+#endif
+
+#ifndef PRIdFAST32
+#error PRIdFAST32 not defined
+#endif
+
+#ifndef PRIdFAST64
+#error PRIdFAST64 not defined
+#endif
+
+#ifndef PRIdMAX
+#error PRIdMAX not defined
+#endif
+
+#ifndef PRIdPTR
+#error PRIdPTR not defined
+#endif
+
+#ifndef PRIi8
+#error PRIi8 not defined
+#endif
+
+#ifndef PRIi16
+#error PRIi16 not defined
+#endif
+
+#ifndef PRIi32
+#error PRIi32 not defined
+#endif
+
+#ifndef PRIi64
+#error PRIi64 not defined
+#endif
+
+#ifndef PRIiLEAST8
+#error PRIiLEAST8 not defined
+#endif
+
+#ifndef PRIiLEAST16
+#error PRIiLEAST16 not defined
+#endif
+
+#ifndef PRIiLEAST32
+#error PRIiLEAST32 not defined
+#endif
+
+#ifndef PRIiLEAST64
+#error PRIiLEAST64 not defined
+#endif
+
+#ifndef PRIiFAST8
+#error PRIiFAST8 not defined
+#endif
+
+#ifndef PRIiFAST16
+#error PRIiFAST16 not defined
+#endif
+
+#ifndef PRIiFAST32
+#error PRIiFAST32 not defined
+#endif
+
+#ifndef PRIiFAST64
+#error PRIiFAST64 not defined
+#endif
+
+#ifndef PRIiMAX
+#error PRIiMAX not defined
+#endif
+
+#ifndef PRIiPTR
+#error PRIiPTR not defined
+#endif
+
+#ifndef PRIo8
+#error PRIo8 not defined
+#endif
+
+#ifndef PRIo16
+#error PRIo16 not defined
+#endif
+
+#ifndef PRIo32
+#error PRIo32 not defined
+#endif
+
+#ifndef PRIo64
+#error PRIo64 not defined
+#endif
+
+#ifndef PRIoLEAST8
+#error PRIoLEAST8 not defined
+#endif
+
+#ifndef PRIoLEAST16
+#error PRIoLEAST16 not defined
+#endif
+
+#ifndef PRIoLEAST32
+#error PRIoLEAST32 not defined
+#endif
+
+#ifndef PRIoLEAST64
+#error PRIoLEAST64 not defined
+#endif
+
+#ifndef PRIoFAST8
+#error PRIoFAST8 not defined
+#endif
+
+#ifndef PRIoFAST16
+#error PRIoFAST16 not defined
+#endif
+
+#ifndef PRIoFAST32
+#error PRIoFAST32 not defined
+#endif
+
+#ifndef PRIoFAST64
+#error PRIoFAST64 not defined
+#endif
+
+#ifndef PRIoMAX
+#error PRIoMAX not defined
+#endif
+
+#ifndef PRIoPTR
+#error PRIoPTR not defined
+#endif
+
+#ifndef PRIu8
+#error PRIu8 not defined
+#endif
+
+#ifndef PRIu16
+#error PRIu16 not defined
+#endif
+
+#ifndef PRIu32
+#error PRIu32 not defined
+#endif
+
+#ifndef PRIu64
+#error PRIu64 not defined
+#endif
+
+#ifndef PRIuLEAST8
+#error PRIuLEAST8 not defined
+#endif
+
+#ifndef PRIuLEAST16
+#error PRIuLEAST16 not defined
+#endif
+
+#ifndef PRIuLEAST32
+#error PRIuLEAST32 not defined
+#endif
+
+#ifndef PRIuLEAST64
+#error PRIuLEAST64 not defined
+#endif
+
+#ifndef PRIuFAST8
+#error PRIuFAST8 not defined
+#endif
+
+#ifndef PRIuFAST16
+#error PRIuFAST16 not defined
+#endif
+
+#ifndef PRIuFAST32
+#error PRIuFAST32 not defined
+#endif
+
+#ifndef PRIuFAST64
+#error PRIuFAST64 not defined
+#endif
+
+#ifndef PRIuMAX
+#error PRIuMAX not defined
+#endif
+
+#ifndef PRIuPTR
+#error PRIuPTR not defined
+#endif
+
+#ifndef PRIx8
+#error PRIx8 not defined
+#endif
+
+#ifndef PRIx16
+#error PRIx16 not defined
+#endif
+
+#ifndef PRIx32
+#error PRIx32 not defined
+#endif
+
+#ifndef PRIx64
+#error PRIx64 not defined
+#endif
+
+#ifndef PRIxLEAST8
+#error PRIxLEAST8 not defined
+#endif
+
+#ifndef PRIxLEAST16
+#error PRIxLEAST16 not defined
+#endif
+
+#ifndef PRIxLEAST32
+#error PRIxLEAST32 not defined
+#endif
+
+#ifndef PRIxLEAST64
+#error PRIxLEAST64 not defined
+#endif
+
+#ifndef PRIxFAST8
+#error PRIxFAST8 not defined
+#endif
+
+#ifndef PRIxFAST16
+#error PRIxFAST16 not defined
+#endif
+
+#ifndef PRIxFAST32
+#error PRIxFAST32 not defined
+#endif
+
+#ifndef PRIxFAST64
+#error PRIxFAST64 not defined
+#endif
+
+#ifndef PRIxMAX
+#error PRIxMAX not defined
+#endif
+
+#ifndef PRIxPTR
+#error PRIxPTR not defined
+#endif
+
+#ifndef PRIX8
+#error PRIX8 not defined
+#endif
+
+#ifndef PRIX16
+#error PRIX16 not defined
+#endif
+
+#ifndef PRIX32
+#error PRIX32 not defined
+#endif
+
+#ifndef PRIX64
+#error PRIX64 not defined
+#endif
+
+#ifndef PRIXLEAST8
+#error PRIXLEAST8 not defined
+#endif
+
+#ifndef PRIXLEAST16
+#error PRIXLEAST16 not defined
+#endif
+
+#ifndef PRIXLEAST32
+#error PRIXLEAST32 not defined
+#endif
+
+#ifndef PRIXLEAST64
+#error PRIXLEAST64 not defined
+#endif
+
+#ifndef PRIXFAST8
+#error PRIXFAST8 not defined
+#endif
+
+#ifndef PRIXFAST16
+#error PRIXFAST16 not defined
+#endif
+
+#ifndef PRIXFAST32
+#error PRIXFAST32 not defined
+#endif
+
+#ifndef PRIXFAST64
+#error PRIXFAST64 not defined
+#endif
+
+#ifndef PRIXMAX
+#error PRIXMAX not defined
+#endif
+
+#ifndef PRIXPTR
+#error PRIXPTR not defined
+#endif
+
+#ifndef SCNd8
+#error SCNd8 not defined
+#endif
+
+#ifndef SCNd16
+#error SCNd16 not defined
+#endif
+
+#ifndef SCNd32
+#error SCNd32 not defined
+#endif
+
+#ifndef SCNd64
+#error SCNd64 not defined
+#endif
+
+#ifndef SCNdLEAST8
+#error SCNdLEAST8 not defined
+#endif
+
+#ifndef SCNdLEAST16
+#error SCNdLEAST16 not defined
+#endif
+
+#ifndef SCNdLEAST32
+#error SCNdLEAST32 not defined
+#endif
+
+#ifndef SCNdLEAST64
+#error SCNdLEAST64 not defined
+#endif
+
+#ifndef SCNdFAST8
+#error SCNdFAST8 not defined
+#endif
+
+#ifndef SCNdFAST16
+#error SCNdFAST16 not defined
+#endif
+
+#ifndef SCNdFAST32
+#error SCNdFAST32 not defined
+#endif
+
+#ifndef SCNdFAST64
+#error SCNdFAST64 not defined
+#endif
+
+#ifndef SCNdMAX
+#error SCNdMAX not defined
+#endif
+
+#ifndef SCNdPTR
+#error SCNdPTR not defined
+#endif
+
+#ifndef SCNi8
+#error SCNi8 not defined
+#endif
+
+#ifndef SCNi16
+#error SCNi16 not defined
+#endif
+
+#ifndef SCNi32
+#error SCNi32 not defined
+#endif
+
+#ifndef SCNi64
+#error SCNi64 not defined
+#endif
+
+#ifndef SCNiLEAST8
+#error SCNiLEAST8 not defined
+#endif
+
+#ifndef SCNiLEAST16
+#error SCNiLEAST16 not defined
+#endif
+
+#ifndef SCNiLEAST32
+#error SCNiLEAST32 not defined
+#endif
+
+#ifndef SCNiLEAST64
+#error SCNiLEAST64 not defined
+#endif
+
+#ifndef SCNiFAST8
+#error SCNiFAST8 not defined
+#endif
+
+#ifndef SCNiFAST16
+#error SCNiFAST16 not defined
+#endif
+
+#ifndef SCNiFAST32
+#error SCNiFAST32 not defined
+#endif
+
+#ifndef SCNiFAST64
+#error SCNiFAST64 not defined
+#endif
+
+#ifndef SCNiMAX
+#error SCNiMAX not defined
+#endif
+
+#ifndef SCNiPTR
+#error SCNiPTR not defined
+#endif
+
+#ifndef SCNo8
+#error SCNo8 not defined
+#endif
+
+#ifndef SCNo16
+#error SCNo16 not defined
+#endif
+
+#ifndef SCNo32
+#error SCNo32 not defined
+#endif
+
+#ifndef SCNo64
+#error SCNo64 not defined
+#endif
+
+#ifndef SCNoLEAST8
+#error SCNoLEAST8 not defined
+#endif
+
+#ifndef SCNoLEAST16
+#error SCNoLEAST16 not defined
+#endif
+
+#ifndef SCNoLEAST32
+#error SCNoLEAST32 not defined
+#endif
+
+#ifndef SCNoLEAST64
+#error SCNoLEAST64 not defined
+#endif
+
+#ifndef SCNoFAST8
+#error SCNoFAST8 not defined
+#endif
+
+#ifndef SCNoFAST16
+#error SCNoFAST16 not defined
+#endif
+
+#ifndef SCNoFAST32
+#error SCNoFAST32 not defined
+#endif
+
+#ifndef SCNoFAST64
+#error SCNoFAST64 not defined
+#endif
+
+#ifndef SCNoMAX
+#error SCNoMAX not defined
+#endif
+
+#ifndef SCNoPTR
+#error SCNoPTR not defined
+#endif
+
+#ifndef SCNu8
+#error SCNu8 not defined
+#endif
+
+#ifndef SCNu16
+#error SCNu16 not defined
+#endif
+
+#ifndef SCNu32
+#error SCNu32 not defined
+#endif
+
+#ifndef SCNu64
+#error SCNu64 not defined
+#endif
+
+#ifndef SCNuLEAST8
+#error SCNuLEAST8 not defined
+#endif
+
+#ifndef SCNuLEAST16
+#error SCNuLEAST16 not defined
+#endif
+
+#ifndef SCNuLEAST32
+#error SCNuLEAST32 not defined
+#endif
+
+#ifndef SCNuLEAST64
+#error SCNuLEAST64 not defined
+#endif
+
+#ifndef SCNuFAST8
+#error SCNuFAST8 not defined
+#endif
+
+#ifndef SCNuFAST16
+#error SCNuFAST16 not defined
+#endif
+
+#ifndef SCNuFAST32
+#error SCNuFAST32 not defined
+#endif
+
+#ifndef SCNuFAST64
+#error SCNuFAST64 not defined
+#endif
+
+#ifndef SCNuMAX
+#error SCNuMAX not defined
+#endif
+
+#ifndef SCNuPTR
+#error SCNuPTR not defined
+#endif
+
+#ifndef SCNx8
+#error SCNx8 not defined
+#endif
+
+#ifndef SCNx16
+#error SCNx16 not defined
+#endif
+
+#ifndef SCNx32
+#error SCNx32 not defined
+#endif
+
+#ifndef SCNx64
+#error SCNx64 not defined
+#endif
+
+#ifndef SCNxLEAST8
+#error SCNxLEAST8 not defined
+#endif
+
+#ifndef SCNxLEAST16
+#error SCNxLEAST16 not defined
+#endif
+
+#ifndef SCNxLEAST32
+#error SCNxLEAST32 not defined
+#endif
+
+#ifndef SCNxLEAST64
+#error SCNxLEAST64 not defined
+#endif
+
+#ifndef SCNxFAST8
+#error SCNxFAST8 not defined
+#endif
+
+#ifndef SCNxFAST16
+#error SCNxFAST16 not defined
+#endif
+
+#ifndef SCNxFAST32
+#error SCNxFAST32 not defined
+#endif
+
+#ifndef SCNxFAST64
+#error SCNxFAST64 not defined
+#endif
+
+#ifndef SCNxMAX
+#error SCNxMAX not defined
+#endif
+
+#ifndef SCNxPTR
+#error SCNxPTR not defined
+#endif
+
+template <class T> void test()
+{
+    T t = 0;
+    ((void)t); // Prevent unused warning
+}
+
+int main(int, char**)
+{
+    test<std::int8_t >();
+    test<std::int16_t>();
+    test<std::int32_t>();
+    test<std::int64_t>();
+
+    test<std::uint8_t >();
+    test<std::uint16_t>();
+    test<std::uint32_t>();
+    test<std::uint64_t>();
+
+    test<std::int_least8_t >();
+    test<std::int_least16_t>();
+    test<std::int_least32_t>();
+    test<std::int_least64_t>();
+
+    test<std::uint_least8_t >();
+    test<std::uint_least16_t>();
+    test<std::uint_least32_t>();
+    test<std::uint_least64_t>();
+
+    test<std::int_fast8_t >();
+    test<std::int_fast16_t>();
+    test<std::int_fast32_t>();
+    test<std::int_fast64_t>();
+
+    test<std::uint_fast8_t >();
+    test<std::uint_fast16_t>();
+    test<std::uint_fast32_t>();
+    test<std::uint_fast64_t>();
+
+    test<std::intptr_t >();
+    test<std::uintptr_t>();
+    test<std::intmax_t >();
+    test<std::uintmax_t>();
+
+    {
+    std::imaxdiv_t  i1 = {};
+    ((void)i1); // Prevent unused warning
+    }
+
+    std::intmax_t i = 0;
+    ((void)i); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::imaxabs(i)), std::intmax_t>::value), "");
+    static_assert((std::is_same<decltype(std::imaxdiv(i, i)), std::imaxdiv_t>::value), "");
+    static_assert((std::is_same<decltype(std::strtoimax("", (char**)0, 0)), std::intmax_t>::value), "");
+    static_assert((std::is_same<decltype(std::strtoumax("", (char**)0, 0)), std::uintmax_t>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_same<decltype(std::wcstoimax(L"", (wchar_t**)0, 0)), std::intmax_t>::value), "");
+    static_assert((std::is_same<decltype(std::wcstoumax(L"", (wchar_t**)0, 0)), std::uintmax_t>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/cstdio.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/cstdio.pass.cpp
new file mode 100644
index 0000000..d18af90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/cstdio.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cstdio>
+
+#include <cstdio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef BUFSIZ
+#error BUFSIZ not defined
+#endif
+
+#ifndef EOF
+#error EOF not defined
+#endif
+
+#ifndef FILENAME_MAX
+#error FILENAME_MAX not defined
+#endif
+
+#ifndef FOPEN_MAX
+#error FOPEN_MAX not defined
+#endif
+
+#ifndef L_tmpnam
+#error L_tmpnam not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef SEEK_CUR
+#error SEEK_CUR not defined
+#endif
+
+#ifndef SEEK_END
+#error SEEK_END not defined
+#endif
+
+#ifndef SEEK_SET
+#error SEEK_SET not defined
+#endif
+
+#ifndef TMP_MAX
+#error TMP_MAX not defined
+#endif
+
+#ifndef _IOFBF
+#error _IOFBF not defined
+#endif
+
+#ifndef _IOLBF
+#error _IOLBF not defined
+#endif
+
+#ifndef _IONBF
+#error _IONBF not defined
+#endif
+
+#ifndef stderr
+#error stderr not defined
+#endif
+
+#ifndef stdin
+#error stdin not defined
+#endif
+
+#ifndef stdout
+#error stdout not defined
+#endif
+
+#include <cstdarg>
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wformat-zero-length")
+
+int main(int, char**)
+{
+    std::FILE* fp = 0;
+    std::fpos_t fpos = std::fpos_t();
+    std::size_t s = 0;
+    char* cp = 0;
+    std::va_list va;
+    void const* vp = 0;
+    ((void)fp); // Prevent unused warning
+    ((void)fpos); // Prevent unused warning
+    ((void)s); // Prevent unused warning
+    ((void)cp); // Prevent unused warning
+    ((void)va); // Prevent unused warning
+    ((void)vp); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::fclose(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fflush(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::setbuf(fp,cp)), void>::value), "");
+    static_assert((std::is_same<decltype(std::vfprintf(fp," ",va)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fprintf(fp," ")), int>::value), "");
+    static_assert((std::is_same<decltype(std::fscanf(fp," ")), int>::value), "");
+    static_assert((std::is_same<decltype(std::snprintf(cp,0," ")), int>::value), "");
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(std::sprintf(cp," ")), int>::value), "");
+    TEST_DIAGNOSTIC_POP
+    static_assert((std::is_same<decltype(std::sscanf(""," ")), int>::value), "");
+    static_assert((std::is_same<decltype(std::vfprintf(fp," ",va)), int>::value), "");
+    static_assert((std::is_same<decltype(std::vfscanf(fp," ",va)), int>::value), "");
+    static_assert((std::is_same<decltype(std::vsnprintf(cp,0," ",va)), int>::value), "");
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(std::vsprintf(cp," ",va)), int>::value), "");
+    TEST_DIAGNOSTIC_POP
+    static_assert((std::is_same<decltype(std::vsscanf(""," ",va)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fgetc(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fgets(cp,0,fp)), char*>::value), "");
+    static_assert((std::is_same<decltype(std::fputc(0,fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fputs("",fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::getc(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::putc(0,fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ungetc(0,fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fread((void*)0,0,0,fp)), std::size_t>::value), "");
+    static_assert((std::is_same<decltype(std::fwrite(vp,0,0,fp)), std::size_t>::value), "");
+#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
+    static_assert((std::is_same<decltype(std::fgetpos(fp, &fpos)), int>::value), "");
+#endif
+    static_assert((std::is_same<decltype(std::fseek(fp, 0,0)), int>::value), "");
+#ifndef TEST_HAS_NO_FGETPOS_FSETPOS
+    static_assert((std::is_same<decltype(std::fsetpos(fp, &fpos)), int>::value), "");
+#endif
+    static_assert((std::is_same<decltype(std::ftell(fp)), long>::value), "");
+    static_assert((std::is_same<decltype(std::rewind(fp)), void>::value), "");
+    static_assert((std::is_same<decltype(std::clearerr(fp)), void>::value), "");
+    static_assert((std::is_same<decltype(std::feof(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ferror(fp)), int>::value), "");
+    static_assert((std::is_same<decltype(std::perror("")), void>::value), "");
+
+    static_assert((std::is_same<decltype(std::fopen("", "")), std::FILE*>::value), "");
+    static_assert((std::is_same<decltype(std::freopen("", "", fp)), std::FILE*>::value), "");
+    static_assert((std::is_same<decltype(std::remove("")), int>::value), "");
+    static_assert((std::is_same<decltype(std::rename("","")), int>::value), "");
+    static_assert((std::is_same<decltype(std::tmpfile()), std::FILE*>::value), "");
+
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(std::tmpnam(cp)), char*>::value), "");
+    TEST_DIAGNOSTIC_POP
+
+    static_assert((std::is_same<decltype(std::getchar()), int>::value), "");
+#if TEST_STD_VER <= 11
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+    static_assert((std::is_same<decltype(std::gets(cp)), char*>::value), "");
+    TEST_DIAGNOSTIC_POP
+#endif
+    static_assert((std::is_same<decltype(std::scanf(" ")), int>::value), "");
+    static_assert((std::is_same<decltype(std::vscanf(" ",va)), int>::value), "");
+
+    static_assert((std::is_same<decltype(std::printf(" ")), int>::value), "");
+    static_assert((std::is_same<decltype(std::putchar(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::puts("")), int>::value), "");
+    static_assert((std::is_same<decltype(std::vprintf(" ",va)), int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/gets.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/gets.compile.fail.cpp
new file mode 100644
index 0000000..1a92cc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/c.files/gets.compile.fail.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// test <cstdio>
+
+// gets
+
+#include <cstdio>
+
+int main(int, char**)
+{
+    (void) std::gets((char *) NULL);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..6febc69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/member_swap.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// void swap(basic_filebuf& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == '2');
+        std::filebuf f2;
+        f2.swap(f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == '2');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == L'2');
+        std::wfilebuf f2;
+        f2.swap(f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == L'2');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..8e76e11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/move_assign.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// basic_filebuf& operator=(basic_filebuf&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == '2');
+        std::filebuf f2;
+        f2 = std::move(f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == '2');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == L'2');
+        std::wfilebuf f2;
+        f2 = std::move(f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == L'2');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..003b030
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// template <class charT, class traits>
+// void
+// swap(basic_filebuf<charT, traits>& x, basic_filebuf<charT, traits>& y);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == '2');
+        std::filebuf f2;
+        swap(f2, f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == '2');
+    }
+    std::remove(temp.c_str());
+
+    // lhs uses a small buffer, rhs is empty
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == '2');
+        std::filebuf f2;
+        swap(f, f2);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == '2');
+    }
+    std::remove(temp.c_str());
+
+    // neither lhs nor rhs use the small buffer
+    {
+        std::string tmpA = get_temp_file_name();
+        std::string tmpB = get_temp_file_name();
+
+        {
+            // currently the small buffer has size 8
+            std::ofstream sa(tmpA), sb(tmpB);
+            sa << "0123456789";
+            sb << "abcdefghij";
+        }
+
+        std::filebuf f1, f2;
+        assert(f1.open(tmpA, std::ios_base::in) != 0);
+        assert(f2.open(tmpB, std::ios_base::in) != 0);
+        assert(f1.sgetc() == '0');
+        assert(f2.sgetc() == 'a');
+
+        swap(f1, f2);
+
+        assert(f1.sgetc() == 'a');
+        assert(f2.sgetc() == '0');
+
+        std::remove(tmpA.c_str());
+        std::remove(tmpB.c_str());
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == L'2');
+        std::wfilebuf f2;
+        swap(f2, f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == L'2');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/nonmember_swap_min.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/nonmember_swap_min.pass.cpp
new file mode 100644
index 0000000..6981360
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.assign/nonmember_swap_min.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This tests that swapping filebufs works correctly even when the small buffer
+// optimization is in use (https://github.com/llvm/llvm-project/issues/49282).
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// template <class charT, class traits>
+// void
+// swap(basic_filebuf<charT, traits>& x, basic_filebuf<charT, traits>& y);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string tmpA = get_temp_file_name();
+    std::string tmpB = get_temp_file_name();
+
+    {
+        std::ofstream sa(tmpA), sb(tmpB);
+        sa << "AAAA";
+        sb << "BBBB";
+    }
+
+    std::filebuf f1;
+    assert(f1.open(tmpA, std::ios_base::in) != 0);
+    assert(f1.is_open());
+    f1.pubsetbuf(0, 0);
+
+    std::filebuf f2;
+    assert(f2.open(tmpB, std::ios_base::in) != 0);
+    assert(f2.is_open());
+    f2.pubsetbuf(0, 0);
+
+    assert(f1.sgetc() == 'A');
+    assert(f2.sgetc() == 'B');
+
+    swap(f1, f2);
+
+    assert(f1.is_open());
+    assert(f2.is_open());
+
+    assert(f1.sgetc() == 'B');
+    assert(f2.sgetc() == 'A');
+
+    std::remove(tmpA.c_str());
+    std::remove(tmpB.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.cons/default.pass.cpp
new file mode 100644
index 0000000..f012fe7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.cons/default.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// basic_filebuf();
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::filebuf f;
+        assert(!f.is_open());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfilebuf f;
+        assert(!f.is_open());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.cons/move.pass.cpp
new file mode 100644
index 0000000..f618e43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.cons/move.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// basic_filebuf(basic_filebuf&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == '2');
+        std::filebuf f2(std::move(f));
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == '2');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == L'2');
+        std::wfilebuf f2(std::move(f));
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == L'2');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/close.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/close.pass.cpp
new file mode 100644
index 0000000..a99e266
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/close.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// basic_filebuf<charT,traits>* close();
+
+#include <fstream>
+#include <cassert>
+#if defined(__unix__)
+#include <fcntl.h>
+#include <unistd.h>
+#endif
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(!f.is_open());
+        assert(f.open(temp.c_str(), std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.close() != nullptr);
+        assert(!f.is_open());
+        assert(f.close() == nullptr);
+        assert(!f.is_open());
+    }
+#if defined(__unix__)
+    {
+        std::filebuf f;
+        assert(!f.is_open());
+        // Use open directly to get the file descriptor.
+        int fd = open(temp.c_str(), O_RDWR);
+        assert(fd >= 0);
+        // Use the internal method to create filebuf from the file descriptor.
+        assert(f.__open(fd, std::ios_base::out) != 0);
+        assert(f.is_open());
+
+        // With Bionic, fdsan aborts the process when close() is called on an fd
+        // belonging to a FILE*, so disable this part of the test. See
+        // https://github.com/android/ndk/issues/1626.
+#if !defined(__BIONIC__)
+        // Close the file descriptor directly to force filebuf::close to fail.
+        assert(close(fd) == 0);
+        // Ensure that filebuf::close handles the failure.
+        assert(f.close() == nullptr);
+        assert(!f.is_open());
+        assert(f.close() == nullptr);
+#endif
+    }
+#endif
+    std::remove(temp.c_str());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/open_path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/open_path.pass.cpp
new file mode 100644
index 0000000..035dd1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/open_path.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <fstream>
+
+// basic_filebuf<charT,traits>* open(const filesystem::path& p, ios_base::openmode mode);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+namespace fs = std::filesystem;
+
+int main(int, char**) {
+
+  fs::path p = get_temp_file_name();
+  {
+    std::filebuf f;
+    assert(f.open(p, std::ios_base::out) != 0);
+    assert(f.is_open());
+    assert(f.sputn("123", 3) == 3);
+  }
+  {
+    std::filebuf f;
+    assert(f.open(p, std::ios_base::in) != 0);
+    assert(f.is_open());
+    assert(f.sbumpc() == '1');
+    assert(f.sbumpc() == '2');
+    assert(f.sbumpc() == '3');
+  }
+  std::remove(p.string().c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wfilebuf f;
+    assert(f.open(p, std::ios_base::out) != 0);
+    assert(f.is_open());
+    assert(f.sputn(L"123", 3) == 3);
+  }
+  {
+    std::wfilebuf f;
+    assert(f.open(p, std::ios_base::in) != 0);
+    assert(f.is_open());
+    assert(f.sbumpc() == L'1');
+    assert(f.sbumpc() == L'2');
+    assert(f.sbumpc() == L'3');
+  }
+  std::remove(p.string().c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/open_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/open_pointer.pass.cpp
new file mode 100644
index 0000000..388d452
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.members/open_pointer.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+    }
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == '1');
+        assert(f.sbumpc() == '2');
+        assert(f.sbumpc() == '3');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+    }
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == L'1');
+        assert(f.sbumpc() == L'2');
+        assert(f.sbumpc() == L'3');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/overflow.pass.cpp
new file mode 100644
index 0000000..9016143
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/overflow.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <fstream>
+
+// int_type overflow(int_type c = traits::eof());
+
+// This test is not entirely portable
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test_buf
+    : public std::basic_filebuf<CharT>
+{
+    typedef std::basic_filebuf<CharT>  base;
+    typedef typename base::char_type   char_type;
+    typedef typename base::int_type    int_type;
+    typedef typename base::traits_type traits_type;
+
+    char_type* pbase() const {return base::pbase();}
+    char_type* pptr()  const {return base::pptr();}
+    char_type* epptr() const {return base::epptr();}
+    void gbump(int n) {base::gbump(n);}
+
+    virtual int_type overflow(int_type c = traits_type::eof()) {return base::overflow(c);}
+};
+
+int main(int, char**)
+{
+    {
+        test_buf<char> f;
+        assert(f.open("overflow.dat", std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.pbase() == 0);
+        assert(f.pptr() == 0);
+        assert(f.epptr() == 0);
+        assert(f.overflow('a') == 'a');
+        assert(f.pbase() != 0);
+        assert(f.pptr() == f.pbase());
+        assert(f.epptr() - f.pbase() == 4095);
+    }
+    {
+        test_buf<char> f;
+        assert(f.open("overflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sgetc() == 'a');
+    }
+    std::remove("overflow.dat");
+    {
+        test_buf<char> f;
+        f.pubsetbuf(0, 0);
+        assert(f.open("overflow.dat", std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.pbase() == 0);
+        assert(f.pptr() == 0);
+        assert(f.epptr() == 0);
+        assert(f.overflow('a') == 'a');
+        assert(f.pbase() == 0);
+        assert(f.pptr() == 0);
+        assert(f.epptr() == 0);
+    }
+    {
+        test_buf<char> f;
+        assert(f.open("overflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sgetc() == 'a');
+    }
+    std::remove("overflow.dat");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test_buf<wchar_t> f;
+        assert(f.open("overflow.dat", std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.pbase() == 0);
+        assert(f.pptr() == 0);
+        assert(f.epptr() == 0);
+        assert(f.overflow(L'a') == L'a');
+        assert(f.pbase() != 0);
+        assert(f.pptr() == f.pbase());
+        assert(f.epptr() - f.pbase() == 4095);
+    }
+    {
+        test_buf<wchar_t> f;
+        assert(f.open("overflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sgetc() == L'a');
+    }
+    std::remove("overflow.dat");
+    {
+        test_buf<wchar_t> f;
+        f.pubsetbuf(0, 0);
+        assert(f.open("overflow.dat", std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.pbase() == 0);
+        assert(f.pptr() == 0);
+        assert(f.epptr() == 0);
+        assert(f.overflow(L'a') == L'a');
+        assert(f.pbase() == 0);
+        assert(f.pptr() == 0);
+        assert(f.epptr() == 0);
+    }
+    {
+        test_buf<wchar_t> f;
+        assert(f.open("overflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sgetc() == L'a');
+    }
+    std::remove("overflow.dat");
+    {
+        test_buf<wchar_t> f;
+        f.pubimbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(f.open("overflow.dat", std::ios_base::out) != 0);
+        assert(f.sputc(0x4E51) == 0x4E51);
+        assert(f.sputc(0x4E52) == 0x4E52);
+        assert(f.sputc(0x4E53) == 0x4E53);
+    }
+    {
+        test_buf<char> f;
+        assert(f.open("overflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == 0xE4);
+        assert(f.sbumpc() == 0xB9);
+        assert(f.sbumpc() == 0x91);
+        assert(f.sbumpc() == 0xE4);
+        assert(f.sbumpc() == 0xB9);
+        assert(f.sbumpc() == 0x92);
+        assert(f.sbumpc() == 0xE4);
+        assert(f.sbumpc() == 0xB9);
+        assert(f.sbumpc() == 0x93);
+        assert(f.sbumpc() == -1);
+    }
+    std::remove("overflow.dat");
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/pbackfail.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/pbackfail.pass.cpp
new file mode 100644
index 0000000..03aff16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/pbackfail.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// int_type pbackfail(int_type c = traits::eof());
+
+// FILE_DEPENDENCIES: underflow.dat
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test_buf
+    : public std::basic_filebuf<CharT>
+{
+    typedef std::basic_filebuf<CharT>  base;
+    typedef typename base::char_type   char_type;
+    typedef typename base::int_type    int_type;
+    typedef typename base::traits_type traits_type;
+
+    char_type* eback() const {return base::eback();}
+    char_type* gptr()  const {return base::gptr();}
+    char_type* egptr() const {return base::egptr();}
+    void gbump(int n) {base::gbump(n);}
+
+    virtual int_type pbackfail(int_type c = traits_type::eof()) {return base::pbackfail(c);}
+};
+
+int main(int, char**)
+{
+    {
+        test_buf<char> f;
+        assert(f.open("underflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == '1');
+        assert(f.sgetc() == '2');
+        typename test_buf<char>::int_type pbackResult = f.pbackfail('a');
+        LIBCPP_ASSERT(pbackResult == -1);
+        if (pbackResult != -1) {
+            assert(f.sbumpc() == 'a');
+            assert(f.sgetc() == '2');
+        }
+    }
+    {
+        test_buf<char> f;
+        assert(f.open("underflow.dat", std::ios_base::in | std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == '1');
+        assert(f.sgetc() == '2');
+        typename test_buf<char>::int_type pbackResult = f.pbackfail('a');
+        LIBCPP_ASSERT(pbackResult == 'a');
+        if (pbackResult != -1) {
+            assert(f.sbumpc() == 'a');
+            assert(f.sgetc() == '2');
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/seekoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/seekoff.pass.cpp
new file mode 100644
index 0000000..8008901
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/seekoff.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// pos_type seekoff(off_type off, ios_base::seekdir way,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+// pos_type seekpos(pos_type sp,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        char buf[10];
+        typedef std::filebuf::pos_type pos_type;
+        std::filebuf f;
+        f.pubsetbuf(buf, sizeof(buf));
+        assert(f.open("seekoff.dat", std::ios_base::in | std::ios_base::out
+                                                       | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        f.sputn("abcdefghijklmnopqrstuvwxyz", 26);
+        LIBCPP_ASSERT(buf[0] == 'v');
+        pos_type p = f.pubseekoff(-15, std::ios_base::cur);
+        assert(p == 11);
+        assert(f.sgetc() == 'l');
+        f.pubseekoff(0, std::ios_base::beg);
+        assert(f.sgetc() == 'a');
+        f.pubseekoff(-1, std::ios_base::end);
+        assert(f.sgetc() == 'z');
+        assert(f.pubseekpos(p) == p);
+        assert(f.sgetc() == 'l');
+    }
+    std::remove("seekoff.dat");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        wchar_t buf[10];
+        typedef std::filebuf::pos_type pos_type;
+        std::wfilebuf f;
+        f.pubsetbuf(buf, sizeof(buf)/sizeof(buf[0]));
+        assert(f.open("seekoff.dat", std::ios_base::in | std::ios_base::out
+                                                       | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        f.sputn(L"abcdefghijklmnopqrstuvwxyz", 26);
+        LIBCPP_ASSERT(buf[0] == L'v');
+        pos_type p = f.pubseekoff(-15, std::ios_base::cur);
+        assert(p == 11);
+        assert(f.sgetc() == L'l');
+        f.pubseekoff(0, std::ios_base::beg);
+        assert(f.sgetc() == L'a');
+        f.pubseekoff(-1, std::ios_base::end);
+        assert(f.sgetc() == L'z');
+        assert(f.pubseekpos(p) == p);
+        assert(f.sgetc() == L'l');
+    }
+    std::remove("seekoff.dat");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow.dat b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow.dat
new file mode 100644
index 0000000..e2e107a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow.dat
@@ -0,0 +1 @@
+123456789
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow.pass.cpp
new file mode 100644
index 0000000..21418bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// FILE_DEPENDENCIES: underflow.dat, underflow_utf8.dat
+
+// <fstream>
+
+// int_type underflow();
+
+// This test is not entirely portable
+
+#include <fstream>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test_buf
+    : public std::basic_filebuf<CharT>
+{
+    typedef std::basic_filebuf<CharT> base;
+    typedef typename base::char_type  char_type;
+    typedef typename base::int_type   int_type;
+
+    char_type* eback() const {return base::eback();}
+    char_type* gptr()  const {return base::gptr();}
+    char_type* egptr() const {return base::egptr();}
+    void gbump(int n) {base::gbump(n);}
+
+    virtual int_type underflow() {return base::underflow();}
+};
+
+int main(int, char**)
+{
+    {
+        test_buf<char> f;
+        assert(f.open("underflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.eback() == 0);
+        assert(f.gptr() == 0);
+        assert(f.egptr() == 0);
+        assert(f.underflow() == '1');
+        assert(f.eback() != 0);
+        assert(f.eback() == f.gptr());
+        assert(*f.gptr() == '1');
+        assert(f.egptr() - f.eback() == 9);
+    }
+    {
+        test_buf<char> f;
+        assert(f.open("underflow.dat", std::ios_base::in) != 0);
+        assert(f.pubsetbuf(0, 0));
+        assert(f.is_open());
+        assert(f.eback() == 0);
+        assert(f.gptr() == 0);
+        assert(f.egptr() == 0);
+        assert(f.underflow() == '1');
+        assert(f.eback() != 0);
+        assert(f.eback() == f.gptr());
+        assert(*f.gptr() == '1');
+        assert(f.egptr() - f.eback() == 8);
+        f.gbump(8);
+        assert(f.sgetc() == '9');
+        assert(f.eback()[0] == '5');
+        assert(f.eback()[1] == '6');
+        assert(f.eback()[2] == '7');
+        assert(f.eback()[3] == '8');
+        assert(f.gptr() - f.eback() == 4);
+        assert(*f.gptr() == '9');
+        assert(f.egptr() - f.gptr() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test_buf<wchar_t> f;
+        assert(f.open("underflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.eback() == 0);
+        assert(f.gptr() == 0);
+        assert(f.egptr() == 0);
+        assert(f.underflow() == L'1');
+        assert(f.eback() != 0);
+        assert(f.eback() == f.gptr());
+        assert(*f.gptr() == L'1');
+        assert(f.egptr() - f.eback() == 9);
+    }
+    {
+        test_buf<wchar_t> f;
+        assert(f.pubsetbuf(0, 0));
+        assert(f.open("underflow.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.eback() == 0);
+        assert(f.gptr() == 0);
+        assert(f.egptr() == 0);
+        assert(f.underflow() == L'1');
+        assert(f.eback() != 0);
+        assert(f.eback() == f.gptr());
+        assert(*f.gptr() == L'1');
+        assert(f.egptr() - f.eback() == 8);
+        f.gbump(8);
+        assert(f.sgetc() == L'9');
+        assert(f.eback()[0] == L'5');
+        assert(f.eback()[1] == L'6');
+        assert(f.eback()[2] == L'7');
+        assert(f.eback()[3] == L'8');
+        assert(f.gptr() - f.eback() == 4);
+        assert(*f.gptr() == L'9');
+        assert(f.egptr() - f.gptr() == 1);
+    }
+    {
+        typedef std::char_traits<wchar_t> Traits;
+        test_buf<wchar_t> f;
+        f.pubimbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(f.open("underflow_utf8.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == 0x4E51);
+        assert(f.sbumpc() == 0x4E52);
+        assert(f.sbumpc() == 0x4E53);
+        assert(f.sbumpc() == static_cast<Traits::int_type>(-1));
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow_utf8.dat b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow_utf8.dat
new file mode 100644
index 0000000..ee7063e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/underflow_utf8.dat
@@ -0,0 +1 @@
+乑乒乓
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf/types.pass.cpp
new file mode 100644
index 0000000..ad4249f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/filebuf/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+//     : public basic_streambuf<charT, traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_streambuf<char>, std::basic_filebuf<char> >::value), "");
+    static_assert((std::is_same<std::basic_filebuf<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_filebuf<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_filebuf<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_filebuf<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_filebuf<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..392fc40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/member_swap.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// void swap(basic_fstream& rhs);
+
+#include <fstream>
+#include <utility>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+std::pair<std::string, std::string> get_temp_file_names() {
+  std::pair<std::string, std::string> names;
+  names.first = get_temp_file_name();
+
+  // Create the file so the next call to `get_temp_file_name()` doesn't
+  // return the same file.
+  std::FILE *fd1 = std::fopen(names.first.c_str(), "w");
+
+  names.second = get_temp_file_name();
+  assert(names.first != names.second);
+
+  std::fclose(fd1);
+  std::remove(names.first.c_str());
+
+  return names;
+}
+
+int main(int, char**)
+{
+    std::pair<std::string, std::string> temp_files = get_temp_file_names();
+    std::string& temp1 = temp_files.first;
+    std::string& temp2 = temp_files.second;
+    assert(temp1 != temp2);
+    {
+        std::fstream fs1(temp1.c_str(), std::ios_base::in | std::ios_base::out
+                                                  | std::ios_base::trunc);
+        std::fstream fs2(temp2.c_str(), std::ios_base::in | std::ios_base::out
+                                                  | std::ios_base::trunc);
+        fs1 << 1 << ' ' << 2;
+        fs2 << 2 << ' ' << 1;
+        fs1.seekg(0);
+        fs1.swap(fs2);
+        fs1.seekg(0);
+        int i;
+        fs1 >> i;
+        assert(i == 2);
+        fs1 >> i;
+        assert(i == 1);
+        i = 0;
+        fs2 >> i;
+        assert(i == 1);
+        fs2 >> i;
+        assert(i == 2);
+    }
+    std::remove(temp1.c_str());
+    std::remove(temp2.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs1(temp1.c_str(), std::ios_base::in | std::ios_base::out
+                                                   | std::ios_base::trunc);
+        std::wfstream fs2(temp2.c_str(), std::ios_base::in | std::ios_base::out
+                                                   | std::ios_base::trunc);
+        fs1 << 1 << ' ' << 2;
+        fs2 << 2 << ' ' << 1;
+        fs1.seekg(0);
+        fs1.swap(fs2);
+        fs1.seekg(0);
+        int i;
+        fs1 >> i;
+        assert(i == 2);
+        fs1 >> i;
+        assert(i == 1);
+        i = 0;
+        fs2 >> i;
+        assert(i == 1);
+        fs2 >> i;
+        assert(i == 2);
+    }
+    std::remove(temp1.c_str());
+    std::remove(temp2.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..7499505
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/move_assign.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// basic_fstream& operator=(basic_fstream&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fso(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                                 | std::ios_base::trunc);
+        std::fstream fs;
+        fs = std::move(fso);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fso(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                                  | std::ios_base::trunc);
+        std::wfstream fs;
+        fs = std::move(fso);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..287716f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// template <class charT, class traits>
+//   void swap(basic_fstream<charT, traits>& x, basic_fstream<charT, traits>& y);
+
+#include <fstream>
+#include <utility>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+
+std::pair<std::string, std::string> get_temp_file_names() {
+  std::pair<std::string, std::string> names;
+  names.first = get_temp_file_name();
+
+  // Create the file so the next call to `get_temp_file_name()` doesn't
+  // return the same file.
+  std::FILE *fd1 = std::fopen(names.first.c_str(), "w");
+
+  names.second = get_temp_file_name();
+  assert(names.first != names.second);
+
+  std::fclose(fd1);
+  std::remove(names.first.c_str());
+
+  return names;
+}
+
+int main(int, char**)
+{
+    std::pair<std::string, std::string> temp_files = get_temp_file_names();
+    std::string& temp1 = temp_files.first;
+    std::string& temp2 = temp_files.second;
+    assert(temp1 != temp2);
+    {
+        std::fstream fs1(temp1.c_str(), std::ios_base::in | std::ios_base::out
+                                                  | std::ios_base::trunc);
+        std::fstream fs2(temp2.c_str(), std::ios_base::in | std::ios_base::out
+                                                  | std::ios_base::trunc);
+        fs1 << 1 << ' ' << 2;
+        fs2 << 2 << ' ' << 1;
+        fs1.seekg(0);
+        swap(fs1, fs2);
+        fs1.seekg(0);
+        int i;
+        fs1 >> i;
+        assert(i == 2);
+        fs1 >> i;
+        assert(i == 1);
+        i = 0;
+        fs2 >> i;
+        assert(i == 1);
+        fs2 >> i;
+        assert(i == 2);
+    }
+    std::remove(temp1.c_str());
+    std::remove(temp2.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs1(temp1.c_str(), std::ios_base::in | std::ios_base::out
+                                                   | std::ios_base::trunc);
+        std::wfstream fs2(temp2.c_str(), std::ios_base::in | std::ios_base::out
+                                                   | std::ios_base::trunc);
+        fs1 << 1 << ' ' << 2;
+        fs2 << 2 << ' ' << 1;
+        fs1.seekg(0);
+        swap(fs1, fs2);
+        fs1.seekg(0);
+        int i;
+        fs1 >> i;
+        assert(i == 2);
+        fs1 >> i;
+        assert(i == 1);
+        i = 0;
+        fs2 >> i;
+        assert(i == 1);
+        fs2 >> i;
+        assert(i == 2);
+    }
+    std::remove(temp1.c_str());
+    std::remove(temp2.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/default.pass.cpp
new file mode 100644
index 0000000..5749de2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/default.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// basic_fstream();
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::fstream fs;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/move.pass.cpp
new file mode 100644
index 0000000..b282e7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/move.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// basic_fstream(basic_fstream&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fso(temp, std::ios_base::in | std::ios_base::out
+                                                 | std::ios_base::trunc);
+        std::fstream fs = std::move(fso);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fso(temp, std::ios_base::in | std::ios_base::out
+                                                  | std::ios_base::trunc);
+        std::wfstream fs = std::move(fso);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/path.pass.cpp
new file mode 100644
index 0000000..835cce6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/path.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <fstream>
+
+// plate <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// explicit basic_fstream(const filesystem::path& s,
+//     ios_base::openmode mode = ios_base::in|ios_base::out);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+namespace fs = std::filesystem;
+
+int main(int, char**) {
+  fs::path p = get_temp_file_name();
+  {
+    std::fstream fs(p, std::ios_base::in | std::ios_base::out |
+                           std::ios_base::trunc);
+    double x = 0;
+    fs << 3.25;
+    fs.seekg(0);
+    fs >> x;
+    assert(x == 3.25);
+  }
+  std::remove(p.string().c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wfstream fs(p, std::ios_base::in | std::ios_base::out |
+                            std::ios_base::trunc);
+    double x = 0;
+    fs << 3.25;
+    fs.seekg(0);
+    fs >> x;
+    assert(x == 3.25);
+  }
+  std::remove(p.string().c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/pointer.pass.cpp
new file mode 100644
index 0000000..63f8b04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/pointer.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in | ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                                | std::ios_base::trunc);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                                 | std::ios_base::trunc);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/string.pass.cpp
new file mode 100644
index 0000000..80b3fe4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.cons/string.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fs(temp,
+                        std::ios_base::in | std::ios_base::out
+                                          | std::ios_base::trunc);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs(temp,
+                         std::ios_base::in | std::ios_base::out
+                                           | std::ios_base::trunc);
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/close.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/close.pass.cpp
new file mode 100644
index 0000000..d1ab079
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/close.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// void close();
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str(), std::ios_base::out);
+        assert(fs.is_open());
+        fs.close();
+        assert(!fs.is_open());
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str(), std::ios_base::out);
+        assert(fs.is_open());
+        fs.close();
+        assert(!fs.is_open());
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_path.pass.cpp
new file mode 100644
index 0000000..f75d115
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_path.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <fstream>
+
+// plate <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// void open(const filesystem::path& s, ios_base::openmode mode = ios_base::in|ios_base::out);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**) {
+  std::filesystem::path p = get_temp_file_name();
+  {
+    std::fstream stream;
+    assert(!stream.is_open());
+    stream.open(p,
+                std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
+    assert(stream.is_open());
+    double x = 0;
+    stream << 3.25;
+    stream.seekg(0);
+    stream >> x;
+    assert(x == 3.25);
+  }
+  std::remove(p.string().c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wfstream stream;
+    assert(!stream.is_open());
+    stream.open(p,
+                std::ios_base::in | std::ios_base::out | std::ios_base::trunc);
+    assert(stream.is_open());
+    double x = 0;
+    stream << 3.25;
+    stream.seekg(0);
+    stream >> x;
+    assert(x == 3.25);
+  }
+  std::remove(p.string().c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_pointer.pass.cpp
new file mode 100644
index 0000000..acfc282
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_pointer.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                        | std::ios_base::trunc);
+        assert(fs.is_open());
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str(), std::ios_base::in | std::ios_base::out
+                                        | std::ios_base::trunc);
+        assert(fs.is_open());
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_string.pass.cpp
new file mode 100644
index 0000000..8ee0fe4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/open_string.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::fstream fs;
+        assert(!fs.is_open());
+        fs.open(temp, std::ios_base::in | std::ios_base::out
+                                                     | std::ios_base::trunc);
+        assert(fs.is_open());
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs;
+        assert(!fs.is_open());
+        fs.open(temp, std::ios_base::in | std::ios_base::out
+                                                     | std::ios_base::trunc);
+        assert(fs.is_open());
+        double x = 0;
+        fs << 3.25;
+        fs.seekg(0);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/rdbuf.pass.cpp
new file mode 100644
index 0000000..7216b08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream.members/rdbuf.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+
+// basic_filebuf<charT,traits>* rdbuf() const;
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::fstream fs;
+        assert(fs.rdbuf());
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wfstream fs;
+        assert(fs.rdbuf());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream/types.pass.cpp
new file mode 100644
index 0000000..9274b18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/fstream/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_fstream
+//     : public basic_iostream<charT,traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_iostream<char>, std::basic_fstream<char> >::value), "");
+    static_assert((std::is_same<std::basic_fstream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_fstream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_fstream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_fstream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_fstream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..0115959
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/member_swap.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat, test2.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// void swap(basic_ifstream& rhs);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs1("test.dat");
+        std::ifstream fs2("test2.dat");
+        fs1.swap(fs2);
+        double x = 0;
+        fs1 >> x;
+        assert(x == 4.5);
+        fs2 >> x;
+        assert(x == 3.25);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs1("test.dat");
+        std::wifstream fs2("test2.dat");
+        fs1.swap(fs2);
+        double x = 0;
+        fs1 >> x;
+        assert(x == 4.5);
+        fs2 >> x;
+        assert(x == 3.25);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..75f4295
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/move_assign.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// basic_ifstream& operator=(basic_ifstream&& rhs);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fso("test.dat");
+        std::ifstream fs;
+        fs = std::move(fso);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fso("test.dat");
+        std::wifstream fs;
+        fs = std::move(fso);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..f22193d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat, test2.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// template <class charT, class traits>
+//   void swap(basic_ifstream<charT, traits>& x, basic_ifstream<charT, traits>& y);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs1("test.dat");
+        std::ifstream fs2("test2.dat");
+        swap(fs1, fs2);
+        double x = 0;
+        fs1 >> x;
+        assert(x == 4.5);
+        fs2 >> x;
+        assert(x == 3.25);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs1("test.dat");
+        std::wifstream fs2("test2.dat");
+        swap(fs1, fs2);
+        double x = 0;
+        fs1 >> x;
+        assert(x == 4.5);
+        fs2 >> x;
+        assert(x == 3.25);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/test.dat b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/test.dat
new file mode 100644
index 0000000..64064d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/test.dat
@@ -0,0 +1 @@
+3.25
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/test2.dat b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/test2.dat
new file mode 100644
index 0000000..958d30d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.assign/test2.dat
@@ -0,0 +1 @@
+4.5
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/default.pass.cpp
new file mode 100644
index 0000000..043db15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/default.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// basic_ifstream();
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/move.pass.cpp
new file mode 100644
index 0000000..f21943a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/move.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// basic_ifstream(basic_ifstream&& rhs);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fso("test.dat");
+        std::ifstream fs = std::move(fso);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fso("test.dat");
+        std::wifstream fs = std::move(fso);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/path.pass.cpp
new file mode 100644
index 0000000..afaaa54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/path.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// explicit basic_ifstream(const filesystem::path& s,
+//     ios_base::openmode mode = ios_base::in);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace fs = std::filesystem;
+
+int main(int, char**) {
+  {
+    fs::path p;
+    static_assert(!std::is_convertible<fs::path, std::ifstream>::value,
+                  "ctor should be explicit");
+    static_assert(std::is_constructible<std::ifstream, fs::path const&,
+                                        std::ios_base::openmode>::value,
+                  "");
+  }
+  {
+    std::ifstream fs(fs::path("test.dat"));
+    double x = 0;
+    fs >> x;
+    assert(x == 3.25);
+  }
+  // std::ifstream(const fs::path&, std::ios_base::openmode) is tested in
+  // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
+  // which creates writable files.
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wifstream fs(fs::path("test.dat"));
+    double x = 0;
+    fs >> x;
+    assert(x == 3.25);
+  }
+  // std::wifstream(const fs::path&, std::ios_base::openmode) is tested in
+  // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
+  // which creates writable files.
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/pointer.pass.cpp
new file mode 100644
index 0000000..bd08804
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/pointer.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs("test.dat");
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    // std::ifstream(const char*, std::ios_base::openmode) is tested in
+    // test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp
+    // which creates writable files.
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs("test.dat");
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    // std::wifstream(const char*, std::ios_base::openmode) is tested in
+    // test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp
+    // which creates writable files.
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/string.pass.cpp
new file mode 100644
index 0000000..ae7976b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/string.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// explicit basic_ifstream(const string& s, ios_base::openmode mode = ios_base::in);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs(std::string("test.dat"));
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    // std::ifstream(const std::string&, std::ios_base::openmode) is tested in
+    // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
+    // which creates writable files.
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs(std::string("test.dat"));
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    // std::wifstream(const std::string&, std::ios_base::openmode) is tested in
+    // test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
+    // which creates writable files.
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/test.dat b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/test.dat
new file mode 100644
index 0000000..64064d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.cons/test.dat
@@ -0,0 +1 @@
+3.25
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/close.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/close.pass.cpp
new file mode 100644
index 0000000..534e66e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/close.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// void close();
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs;
+        assert(!fs.is_open());
+        fs.open("test.dat");
+        assert(fs.is_open());
+        fs.close();
+        assert(!fs.is_open());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs;
+        assert(!fs.is_open());
+        fs.open("test.dat");
+        assert(fs.is_open());
+        fs.close();
+        assert(!fs.is_open());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_path.pass.cpp
new file mode 100644
index 0000000..5a53c17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_path.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// void open(const filesystem::path& s, ios_base::openmode mode = ios_base::in);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    std::ifstream fs;
+    assert(!fs.is_open());
+    char c = 'a';
+    fs >> c;
+    assert(fs.fail());
+    assert(c == 'a');
+    fs.open(std::filesystem::path("test.dat"));
+    assert(fs.is_open());
+    fs >> c;
+    assert(c == 'r');
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wifstream fs;
+    assert(!fs.is_open());
+    wchar_t c = L'a';
+    fs >> c;
+    assert(fs.fail());
+    assert(c == L'a');
+    fs.open(std::filesystem::path("test.dat"));
+    assert(fs.is_open());
+    fs >> c;
+    assert(c == L'r');
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_pointer.pass.cpp
new file mode 100644
index 0000000..ebd9909
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_pointer.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// void open(const char* s, ios_base::openmode mode = ios_base::in);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs;
+        assert(!fs.is_open());
+        char c = 'a';
+        fs >> c;
+        assert(fs.fail());
+        assert(c == 'a');
+        fs.open("test.dat");
+        assert(fs.is_open());
+        fs >> c;
+        assert(c == 'r');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs;
+        assert(!fs.is_open());
+        wchar_t c = L'a';
+        fs >> c;
+        assert(fs.fail());
+        assert(c == L'a');
+        fs.open("test.dat");
+        assert(fs.is_open());
+        fs >> c;
+        assert(c == L'r');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_string.pass.cpp
new file mode 100644
index 0000000..f50cc96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/open_string.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// void open(const string& s, ios_base::openmode mode = ios_base::in);
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs;
+        assert(!fs.is_open());
+        char c = 'a';
+        fs >> c;
+        assert(fs.fail());
+        assert(c == 'a');
+        fs.open(std::string("test.dat"));
+        assert(fs.is_open());
+        fs >> c;
+        assert(c == 'r');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs;
+        assert(!fs.is_open());
+        wchar_t c = L'a';
+        fs >> c;
+        assert(fs.fail());
+        assert(c == L'a');
+        fs.open(std::string("test.dat"));
+        assert(fs.is_open());
+        fs >> c;
+        assert(c == L'r');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/rdbuf.pass.cpp
new file mode 100644
index 0000000..c51a807
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/rdbuf.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FILE_DEPENDENCIES: test.dat
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+
+// basic_filebuf<charT,traits>* rdbuf() const;
+
+#include <fstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ifstream fs("test.dat");
+        std::filebuf* fb = fs.rdbuf();
+        assert(fb->sgetc() == 'r');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wifstream fs("test.dat");
+        std::wfilebuf* fb = fs.rdbuf();
+        assert(fb->sgetc() == L'r');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/test.dat b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/test.dat
new file mode 100644
index 0000000..1d2f014
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream.members/test.dat
@@ -0,0 +1 @@
+r
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream/types.pass.cpp
new file mode 100644
index 0000000..15a0440
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ifstream/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ifstream
+//     : public basic_istream<charT,traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_istream<char>, std::basic_ifstream<char> >::value), "");
+    static_assert((std::is_same<std::basic_ifstream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_ifstream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_ifstream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_ifstream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_ifstream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..37cb0a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/member_swap.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void swap(basic_ofstream& rhs);
+
+#include <fstream>
+#include <utility>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+std::pair<std::string, std::string> get_temp_file_names() {
+  std::pair<std::string, std::string> names;
+  names.first = get_temp_file_name();
+
+  // Create the file so the next call to `get_temp_file_name()` doesn't
+  // return the same file.
+  std::FILE *fd1 = std::fopen(names.first.c_str(), "w");
+
+  names.second = get_temp_file_name();
+  assert(names.first != names.second);
+
+  std::fclose(fd1);
+  std::remove(names.first.c_str());
+
+  return names;
+}
+
+int main(int, char**)
+{
+    std::pair<std::string, std::string> temp_files = get_temp_file_names();
+    std::string& temp1 = temp_files.first;
+    std::string& temp2 = temp_files.second;
+    assert(temp1 != temp2);
+    {
+        std::ofstream fs1(temp1.c_str());
+        std::ofstream fs2(temp2.c_str());
+        fs1 << 3.25;
+        fs2 << 4.5;
+        fs1.swap(fs2);
+        fs1 << ' ' << 3.25;
+        fs2 << ' ' << 4.5;
+    }
+    {
+        std::ifstream fs(temp1.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+        fs >> x;
+        assert(x == 4.5);
+    }
+    std::remove(temp1.c_str());
+    {
+        std::ifstream fs(temp2.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 4.5);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp2.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs1(temp1.c_str());
+        std::wofstream fs2(temp2.c_str());
+        fs1 << 3.25;
+        fs2 << 4.5;
+        fs1.swap(fs2);
+        fs1 << ' ' << 3.25;
+        fs2 << ' ' << 4.5;
+    }
+    {
+        std::wifstream fs(temp1.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+        fs >> x;
+        assert(x == 4.5);
+    }
+    std::remove(temp1.c_str());
+    {
+        std::wifstream fs(temp2.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 4.5);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp2.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..276fef5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/move_assign.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// basic_ofstream& operator=(basic_ofstream&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fso(temp.c_str());
+        std::ofstream fs;
+        fs = std::move(fso);
+        fs << 3.25;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fso(temp.c_str());
+        std::wofstream fs;
+        fs = std::move(fso);
+        fs << 3.25;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..831d53c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// template <class charT, class traits>
+//   void swap(basic_ofstream<charT, traits>& x, basic_ofstream<charT, traits>& y);
+
+#include <fstream>
+#include <utility>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+std::pair<std::string, std::string> get_temp_file_names() {
+  std::pair<std::string, std::string> names;
+  names.first = get_temp_file_name();
+
+  // Create the file so the next call to `get_temp_file_name()` doesn't
+  // return the same file.
+  std::FILE *fd1 = std::fopen(names.first.c_str(), "w");
+
+  names.second = get_temp_file_name();
+  assert(names.first != names.second);
+
+  std::fclose(fd1);
+  std::remove(names.first.c_str());
+
+  return names;
+}
+
+int main(int, char**)
+{
+    std::pair<std::string, std::string> temp_files = get_temp_file_names();
+    std::string& temp1 = temp_files.first;
+    std::string& temp2 = temp_files.second;
+    assert(temp1 != temp2);
+    {
+        std::ofstream fs1(temp1.c_str());
+        std::ofstream fs2(temp2.c_str());
+        fs1 << 3.25;
+        fs2 << 4.5;
+        swap(fs1, fs2);
+        fs1 << ' ' << 3.25;
+        fs2 << ' ' << 4.5;
+    }
+    {
+        std::ifstream fs(temp1.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+        fs >> x;
+        assert(x == 4.5);
+    }
+    std::remove(temp1.c_str());
+    {
+        std::ifstream fs(temp2.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 4.5);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp2.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs1(temp1.c_str());
+        std::wofstream fs2(temp2.c_str());
+        fs1 << 3.25;
+        fs2 << 4.5;
+        swap(fs1, fs2);
+        fs1 << ' ' << 3.25;
+        fs2 << ' ' << 4.5;
+    }
+    {
+        std::wifstream fs(temp1.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+        fs >> x;
+        assert(x == 4.5);
+    }
+    std::remove(temp1.c_str());
+    {
+        std::wifstream fs(temp2.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 4.5);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp2.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/default.pass.cpp
new file mode 100644
index 0000000..3470133
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/default.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// basic_ofstream();
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ofstream fs;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/move.pass.cpp
new file mode 100644
index 0000000..a06ad43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/move.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// basic_ofstream(basic_ofstream&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fso(temp.c_str());
+        std::ofstream fs = std::move(fso);
+        fs << 3.25;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fso(temp.c_str());
+        std::wofstream fs = std::move(fso);
+        fs << 3.25;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/path.pass.cpp
new file mode 100644
index 0000000..f8a6d28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/path.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <fstream>
+
+// plate <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// explicit basic_ofstream(const filesystem::path& s, ios_base::openmode mode = ios_base::out);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+namespace fs = std::filesystem;
+
+int main(int, char**) {
+  fs::path p = get_temp_file_name();
+  {
+    static_assert(!std::is_convertible<fs::path, std::ofstream>::value,
+                  "ctor should be explicit");
+    static_assert(std::is_constructible<std::ofstream, fs::path const&,
+                                        std::ios_base::openmode>::value,
+                  "");
+  }
+  {
+    std::ofstream stream(p);
+    stream << 3.25;
+  }
+  {
+    std::ifstream stream(p);
+    double x = 0;
+    stream >> x;
+    assert(x == 3.25);
+  }
+  {
+    std::ifstream stream(p, std::ios_base::out);
+    double x = 0;
+    stream >> x;
+    assert(x == 3.25);
+  }
+  std::remove(p.string().c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wofstream stream(p);
+    stream << 3.25;
+  }
+  {
+    std::wifstream stream(p);
+    double x = 0;
+    stream >> x;
+    assert(x == 3.25);
+  }
+  {
+    std::wifstream stream(p, std::ios_base::out);
+    double x = 0;
+    stream >> x;
+    assert(x == 3.25);
+  }
+  std::remove(p.string().c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp
new file mode 100644
index 0000000..b43f0ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/pointer.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fs(temp.c_str());
+        fs << 3.25;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    {
+        std::ifstream fs(temp.c_str(), std::ios_base::out);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs(temp.c_str());
+        fs << 3.25;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    {
+        std::wifstream fs(temp.c_str(), std::ios_base::out);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
new file mode 100644
index 0000000..4c0823e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.cons/string.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fs(temp);
+        fs << 3.25;
+    }
+    {
+        std::ifstream fs(temp);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    {
+        std::ifstream fs(temp, std::ios_base::out);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs(temp);
+        fs << 3.25;
+    }
+    {
+        std::wifstream fs(temp);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    {
+        std::wifstream fs(temp, std::ios_base::out);
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/close.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/close.pass.cpp
new file mode 100644
index 0000000..bcab4b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/close.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void close();
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str());
+        assert(fs.is_open());
+        fs.close();
+        assert(!fs.is_open());
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs;
+        assert(!fs.is_open());
+        fs.open(temp.c_str());
+        assert(fs.is_open());
+        fs.close();
+        assert(!fs.is_open());
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_path.pass.cpp
new file mode 100644
index 0000000..db7a267
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_path.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <fstream>
+
+// plate <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void open(const filesystem::path& s, ios_base::openmode mode = ios_base::out);
+
+#include <fstream>
+#include <filesystem>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+namespace fs = std::filesystem;
+
+int main(int, char**) {
+  fs::path p = get_temp_file_name();
+  {
+    std::ofstream fs;
+    assert(!fs.is_open());
+    char c = 'a';
+    fs << c;
+    assert(fs.fail());
+    fs.open(p);
+    assert(fs.is_open());
+    fs << c;
+  }
+  {
+    std::ifstream fs(p.c_str());
+    char c = 0;
+    fs >> c;
+    assert(c == 'a');
+  }
+  std::remove(p.string().c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wofstream fs;
+    assert(!fs.is_open());
+    wchar_t c = L'a';
+    fs << c;
+    assert(fs.fail());
+    fs.open(p);
+    assert(fs.is_open());
+    fs << c;
+  }
+  {
+    std::wifstream fs(p.c_str());
+    wchar_t c = 0;
+    fs >> c;
+    assert(c == L'a');
+  }
+  std::remove(p.string().c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_pointer.pass.cpp
new file mode 100644
index 0000000..6b9d157
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_pointer.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void open(const char* s, ios_base::openmode mode = ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fs;
+        assert(!fs.is_open());
+        char c = 'a';
+        fs << c;
+        assert(fs.fail());
+        fs.open(temp.c_str());
+        assert(fs.is_open());
+        fs << c;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        char c = 0;
+        fs >> c;
+        assert(c == 'a');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs;
+        assert(!fs.is_open());
+        wchar_t c = L'a';
+        fs << c;
+        assert(fs.fail());
+        fs.open(temp.c_str());
+        assert(fs.is_open());
+        fs << c;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        wchar_t c = 0;
+        fs >> c;
+        assert(c == L'a');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_string.pass.cpp
new file mode 100644
index 0000000..61bd22b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/open_string.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void open(const string& s, ios_base::openmode mode = ios_base::out);
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fs;
+        assert(!fs.is_open());
+        char c = 'a';
+        fs << c;
+        assert(fs.fail());
+        fs.open(temp);
+        assert(fs.is_open());
+        fs << c;
+    }
+    {
+        std::ifstream fs(temp.c_str());
+        char c = 0;
+        fs >> c;
+        assert(c == 'a');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs;
+        assert(!fs.is_open());
+        wchar_t c = L'a';
+        fs << c;
+        assert(fs.fail());
+        fs.open(temp);
+        assert(fs.is_open());
+        fs << c;
+    }
+    {
+        std::wifstream fs(temp.c_str());
+        wchar_t c = 0;
+        fs >> c;
+        assert(c == L'a');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/rdbuf.pass.cpp
new file mode 100644
index 0000000..6af8665
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream.members/rdbuf.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// basic_filebuf<charT,traits>* rdbuf() const;
+
+#include <fstream>
+#include <cassert>
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::ofstream fs(temp.c_str());
+        std::filebuf* fb = fs.rdbuf();
+        assert(fb->sputc('r') == 'r');
+    }
+    std::remove(temp.c_str());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wofstream fs(temp.c_str());
+        std::wfilebuf* fb = fs.rdbuf();
+        assert(fb->sputc(L'r') == L'r');
+    }
+    std::remove(temp.c_str());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream/types.pass.cpp
new file mode 100644
index 0000000..0986d59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/fstreams/ofstream/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+//     : public basic_ostream<charT,traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <fstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_ostream<char>, std::basic_ofstream<char> >::value), "");
+    static_assert((std::is_same<std::basic_ofstream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_ofstream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_ofstream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_ofstream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_ofstream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/file.streams/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/lit.local.cfg
new file mode 100644
index 0000000..c62247c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/file.streams/lit.local.cfg
@@ -0,0 +1,6 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
+
+if 'no-fstream' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/copy.pass.cpp
new file mode 100644
index 0000000..e3c240d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/copy.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry(const directory_entry&) = default;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+#include "test_convertible.h"
+
+TEST_SUITE(directory_entry_path_ctor_suite)
+
+TEST_CASE(copy_ctor) {
+  using namespace fs;
+  // Copy
+  {
+    static_assert(std::is_copy_constructible<directory_entry>::value,
+                  "directory_entry must be copy constructible");
+    static_assert(!std::is_nothrow_copy_constructible<directory_entry>::value,
+                  "directory_entry's copy constructor cannot be noexcept");
+    const path p("foo/bar/baz");
+    const directory_entry e(p);
+    assert(e.path() == p);
+    directory_entry e2(e);
+    assert(e.path() == p);
+    assert(e2.path() == p);
+  }
+}
+
+TEST_CASE(copy_ctor_copies_cache) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  {
+    directory_entry ent(sym);
+
+    fs::remove(sym);
+
+    directory_entry ent_cp(ent);
+    TEST_CHECK(ent_cp.path() == sym);
+    TEST_CHECK(ent_cp.is_symlink());
+  }
+
+  {
+    directory_entry ent(file);
+
+    fs::remove(file);
+
+    directory_entry ent_cp(ent);
+    TEST_CHECK(ent_cp.path() == file);
+    TEST_CHECK(ent_cp.is_regular_file());
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/copy_assign.pass.cpp
new file mode 100644
index 0000000..2b3dc83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/copy_assign.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry& operator=(directory_entry const&) = default;
+// directory_entry& operator=(directory_entry&&) noexcept = default;
+// void assign(path const&);
+// void replace_filename(path const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+TEST_SUITE(directory_entry_ctor_suite)
+
+TEST_CASE(test_copy_assign_operator) {
+  using namespace fs;
+  // Copy
+  {
+    static_assert(std::is_copy_assignable<directory_entry>::value,
+                  "directory_entry must be copy assignable");
+    static_assert(!std::is_nothrow_copy_assignable<directory_entry>::value,
+                  "directory_entry's copy assignment cannot be noexcept");
+    const path p("foo/bar/baz");
+    const path p2("abc");
+    const directory_entry e(p);
+    directory_entry e2;
+    assert(e.path() == p && e2.path() == path());
+    e2 = e;
+    assert(e.path() == p && e2.path() == p);
+    directory_entry e3(p2);
+    e2 = e3;
+    assert(e2.path() == p2 && e3.path() == p2);
+  }
+}
+
+TEST_CASE(copy_assign_copies_cache) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  {
+    directory_entry ent(sym);
+
+    fs::remove(sym);
+
+    directory_entry ent_cp;
+    ent_cp = ent;
+    TEST_CHECK(ent_cp.path() == sym);
+    TEST_CHECK(ent_cp.is_symlink());
+  }
+
+  {
+    directory_entry ent(file);
+
+    fs::remove(file);
+
+    directory_entry ent_cp;
+    ent_cp = ent;
+    TEST_CHECK(ent_cp.path() == file);
+    TEST_CHECK(ent_cp.is_regular_file());
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/default.pass.cpp
new file mode 100644
index 0000000..56c76e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/default.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+//          directory_entry() noexcept = default;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  using namespace fs;
+  // Default
+  {
+    static_assert(std::is_nothrow_default_constructible<directory_entry>::value,
+                  "directory_entry must have a nothrow default constructor");
+    directory_entry e;
+    assert(e.path() == path());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/default_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/default_const.pass.cpp
new file mode 100644
index 0000000..f8e8252
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/default_const.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+//          directory_entry() noexcept = default;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  using namespace fs;
+  // Default
+  {
+    static_assert(std::is_nothrow_default_constructible<directory_entry>::value,
+                  "directory_entry must have a nothrow default constructor");
+    const directory_entry e;
+    assert(e.path() == path());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/move.pass.cpp
new file mode 100644
index 0000000..4d59b42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/move.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry(directory_entry&&) noexcept = default;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+#include "test_convertible.h"
+
+TEST_SUITE(directory_entry_path_ctor_suite)
+
+TEST_CASE(move_ctor) {
+  using namespace fs;
+  // Move
+  {
+    static_assert(std::is_nothrow_move_constructible<directory_entry>::value,
+                  "directory_entry must be nothrow move constructible");
+    const path p("foo/bar/baz");
+    directory_entry e(p);
+    assert(e.path() == p);
+    directory_entry e2(std::move(e));
+    assert(e2.path() == p);
+    assert(e.path() != p); // Testing moved from state.
+  }
+}
+
+TEST_CASE(move_ctor_copies_cache) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  {
+    directory_entry ent(sym);
+
+    fs::remove(sym);
+
+    directory_entry ent_cp(std::move(ent));
+    TEST_CHECK(ent_cp.path() == sym);
+    TEST_CHECK(ent_cp.is_symlink());
+  }
+
+  {
+    directory_entry ent(file);
+
+    fs::remove(file);
+
+    directory_entry ent_cp(std::move(ent));
+    TEST_CHECK(ent_cp.path() == file);
+    TEST_CHECK(ent_cp.is_regular_file());
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..945b294
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/move_assign.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry& operator=(directory_entry const&) = default;
+// directory_entry& operator=(directory_entry&&) noexcept = default;
+// void assign(path const&);
+// void replace_filename(path const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+TEST_SUITE(directory_entry_ctor_suite)
+
+TEST_CASE(test_move_assign_operator) {
+  using namespace fs;
+  // Copy
+  {
+    static_assert(std::is_nothrow_move_assignable<directory_entry>::value,
+                  "directory_entry is noexcept move assignable");
+    const path p("foo/bar/baz");
+    const path p2("abc");
+    directory_entry e(p);
+    directory_entry e2(p2);
+    assert(e.path() == p && e2.path() == p2);
+    e2 = std::move(e);
+    assert(e2.path() == p);
+    assert(e.path() != p); // testing moved from state
+  }
+}
+
+TEST_CASE(move_assign_copies_cache) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  {
+    directory_entry ent(sym);
+
+    fs::remove(sym);
+
+    directory_entry ent_cp;
+    ent_cp = std::move(ent);
+    TEST_CHECK(ent_cp.path() == sym);
+    TEST_CHECK(ent_cp.is_symlink());
+  }
+
+  {
+    directory_entry ent(file);
+
+    fs::remove(file);
+
+    directory_entry ent_cp;
+    ent_cp = std::move(ent);
+    TEST_CHECK(ent_cp.path() == file);
+    TEST_CHECK(ent_cp.is_regular_file());
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/path.pass.cpp
new file mode 100644
index 0000000..19148e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.cons/path.pass.cpp
@@ -0,0 +1,203 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// explicit directory_entry(const path);
+// directory_entry(const path&, error_code& ec);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+#include "test_convertible.h"
+
+TEST_SUITE(directory_entry_path_ctor_suite)
+
+TEST_CASE(path_ctor) {
+  using namespace fs;
+  {
+    static_assert(std::is_constructible<directory_entry, const path&>::value,
+                  "directory_entry must be constructible from path");
+    static_assert(
+        !std::is_nothrow_constructible<directory_entry, const path&>::value,
+        "directory_entry constructor should not be noexcept");
+    static_assert(!std::is_convertible<path const&, directory_entry>::value,
+                  "directory_entry constructor should be explicit");
+  }
+  {
+    const path p("foo/bar/baz");
+    const directory_entry e(p);
+    TEST_CHECK(e.path() == p);
+  }
+}
+
+TEST_CASE(path_ec_ctor) {
+  static_test_env static_env;
+  using namespace fs;
+  {
+    static_assert(
+        std::is_constructible<directory_entry, const path&,
+                              std::error_code&>::value,
+        "directory_entry must be constructible from path and error_code");
+    static_assert(!std::is_nothrow_constructible<directory_entry, const path&,
+                                                 std::error_code&>::value,
+                  "directory_entry constructor should not be noexcept");
+    static_assert(
+        test_convertible<directory_entry, const path&, std::error_code&>(),
+        "directory_entry constructor should not be explicit");
+  }
+  {
+    std::error_code ec = GetTestEC();
+    const directory_entry e(static_env.File, ec);
+    TEST_CHECK(e.path() == static_env.File);
+    TEST_CHECK(!ec);
+  }
+  {
+    const path p("foo/bar/baz");
+    std::error_code ec = GetTestEC();
+    const directory_entry e(p, ec);
+    TEST_CHECK(e.path() == p);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+  }
+}
+
+TEST_CASE(path_ctor_calls_refresh) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  {
+    directory_entry ent(file);
+    std::error_code ec = GetTestEC();
+    directory_entry ent_ec(file, ec);
+    TEST_CHECK(!ec);
+
+    LIBCPP_ONLY(remove(file));
+
+    TEST_CHECK(ent.exists());
+    TEST_CHECK(ent_ec.exists());
+
+    TEST_CHECK(ent.file_size() == 42);
+    TEST_CHECK(ent_ec.file_size() == 42);
+  }
+
+  env.create_file("dir/file", 101);
+
+  {
+    directory_entry ent(sym);
+    std::error_code ec = GetTestEC();
+    directory_entry ent_ec(sym, ec);
+    TEST_CHECK(!ec);
+
+    LIBCPP_ONLY(remove(file));
+    LIBCPP_ONLY(remove(sym));
+
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent_ec.is_symlink());
+
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent_ec.is_regular_file());
+
+    TEST_CHECK(ent.file_size() == 101);
+    TEST_CHECK(ent_ec.file_size() == 101);
+  }
+}
+
+TEST_CASE(path_ctor_dne) {
+  using namespace fs;
+
+  static_test_env static_env;
+
+  {
+    std::error_code ec = GetTestEC();
+    directory_entry ent(static_env.DNE, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+    TEST_CHECK(ent.path() == static_env.DNE);
+  }
+  // don't report dead symlinks as an error.
+  {
+    std::error_code ec = GetTestEC();
+    directory_entry ent(static_env.BadSymlink, ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(ent.path() == static_env.BadSymlink);
+  }
+  // DNE does not cause the constructor to throw
+  {
+    directory_entry ent(static_env.DNE);
+    TEST_CHECK(ent.path() == static_env.DNE);
+
+    directory_entry ent_two(static_env.BadSymlink);
+    TEST_CHECK(ent_two.path() == static_env.BadSymlink);
+  }
+}
+
+TEST_CASE(path_ctor_cannot_resolve) {
+  using namespace fs;
+#ifdef _WIN32
+  // Windows doesn't support setting perms::none to trigger failures
+  // reading directories; test using a special inaccessible directory
+  // instead.
+  const path dir = GetWindowsInaccessibleDir();
+  if (dir.empty())
+    TEST_UNSUPPORTED();
+  const path file = dir / "file";
+  {
+    std::error_code ec = GetTestEC();
+    directory_entry ent(file, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+    TEST_CHECK(ent.path() == file);
+  }
+  {
+    TEST_CHECK_NO_THROW(directory_entry(file));
+  }
+#else
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file1", 101);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path sym_in_dir = env.create_symlink("dir/file1", "dir/sym2");
+  permissions(dir, perms::none);
+
+  {
+    std::error_code ec = GetTestEC();
+    directory_entry ent(file, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+    TEST_CHECK(ent.path() == file);
+  }
+  {
+    std::error_code ec = GetTestEC();
+    directory_entry ent(sym_in_dir, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+    TEST_CHECK(ent.path() == sym_in_dir);
+  }
+  {
+    std::error_code ec = GetTestEC();
+    directory_entry ent(sym_out_of_dir, ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(ent.path() == sym_out_of_dir);
+  }
+  {
+    TEST_CHECK_NO_THROW(directory_entry(file));
+    TEST_CHECK_NO_THROW(directory_entry(sym_in_dir));
+    TEST_CHECK_NO_THROW(directory_entry(sym_out_of_dir));
+  }
+#endif
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.io/directory_entry.io.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.io/directory_entry.io.pass.cpp
new file mode 100644
index 0000000..77b9dcf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.io/directory_entry.io.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+//
+// class directory_entry
+//
+// template<class charT, class traits>
+//   friend basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const directory_entry& d);
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <sstream>
+
+#include "test_macros.h"
+#include "make_string.h"
+
+MultiStringType InStr =  MKSTR("abcdefg/\"hijklmnop\"/qrstuvwxyz/123456789");
+MultiStringType OutStr = MKSTR("\"abcdefg/\\\"hijklmnop\\\"/qrstuvwxyz/123456789\"");
+
+template <class CharT>
+void TestOutput() {
+  const char* input = static_cast<const char*>(InStr);
+  const CharT* expected_output = static_cast<const CharT*>(OutStr);
+  const fs::directory_entry dir = fs::directory_entry(fs::path(input));
+  std::basic_stringstream<CharT> stream;
+
+  auto& result = stream << dir;
+  assert(stream.str() == expected_output);
+  assert(&result == &stream);
+}
+
+int main(int, char**) {
+  TestOutput<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  TestOutput<wchar_t>();
+#endif
+  // TODO(var-const): uncomment when it becomes possible to instantiate a `basic_ostream` object with a sized character
+  // type (see https://llvm.org/PR53119).
+  //TestOutput<char8_t>();
+  //TestOutput<char16_t>();
+  //TestOutput<char32_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/assign.pass.cpp
new file mode 100644
index 0000000..1ab9a91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/assign.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry& operator=(directory_entry const&) = default;
+// directory_entry& operator=(directory_entry&&) noexcept = default;
+// void assign(path const&);
+// void replace_filename(path const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+TEST_SUITE(directory_entry_mods_suite)
+
+TEST_CASE(test_path_assign_method) {
+  using namespace fs;
+  const path p("foo/bar/baz");
+  const path p2("abc");
+  directory_entry e(p);
+  {
+    static_assert(std::is_same<decltype(e.assign(p)), void>::value,
+                  "return type should be void");
+    static_assert(noexcept(e.assign(p)) == false,
+                  "operation must not be noexcept");
+  }
+  {
+    TEST_CHECK(e.path() == p);
+    e.assign(p2);
+    TEST_CHECK(e.path() == p2 && e.path() != p);
+    e.assign(p);
+    TEST_CHECK(e.path() == p && e.path() != p2);
+  }
+}
+
+TEST_CASE(test_path_assign_ec_method) {
+  using namespace fs;
+  const path p("foo/bar/baz");
+  const path p2("abc");
+  {
+    std::error_code ec;
+    directory_entry e(p);
+    static_assert(std::is_same<decltype(e.assign(p, ec)), void>::value,
+                  "return type should be void");
+    static_assert(noexcept(e.assign(p, ec)) == false,
+                  "operation must not be noexcept");
+  }
+  {
+    directory_entry ent(p);
+    std::error_code ec = GetTestEC();
+    ent.assign(p2, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+    TEST_CHECK(ent.path() == p2);
+  }
+}
+
+TEST_CASE(test_assign_calls_refresh) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  {
+    directory_entry ent;
+    ent.assign(file);
+
+    // removing the file demonstrates that the values where cached previously.
+    LIBCPP_ONLY(remove(file));
+
+    TEST_CHECK(ent.is_regular_file());
+  }
+  env.create_file("dir/file", 101);
+  {
+    directory_entry ent;
+    ent.assign(sym);
+
+    LIBCPP_ONLY(remove(file));
+    LIBCPP_ONLY(remove(sym));
+
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+  }
+}
+
+TEST_CASE(test_assign_propagates_error) {
+  using namespace fs;
+  scoped_test_env env;
+#ifdef _WIN32
+  // Windows doesn't support setting perms::none to trigger failures
+  // reading directories; test using a special inaccessible directory
+  // instead.
+  const path dir = GetWindowsInaccessibleDir();
+  if (dir.empty())
+    TEST_UNSUPPORTED();
+  const path file = dir / "inaccessible_file";
+  // We can't create files in the inaccessible directory, so this doesn't
+  // test exactly the same as the code below.
+  const path sym_out_of_dir = env.create_symlink(file, "sym");
+  {
+    directory_entry ent;
+    std::error_code ec = GetTestEC();
+    ent.assign(file, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+  }
+#else
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path file_out_of_dir = env.create_file("file1");
+  const path sym_in_dir = env.create_symlink("file1", "dir/sym1");
+
+  permissions(dir, perms::none);
+
+  {
+    directory_entry ent;
+    std::error_code ec = GetTestEC();
+    ent.assign(file, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+  }
+  {
+    directory_entry ent;
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_in_dir, ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+  }
+#endif
+  {
+    directory_entry ent;
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_out_of_dir, ec);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/refresh.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/refresh.pass.cpp
new file mode 100644
index 0000000..56fda26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/refresh.pass.cpp
@@ -0,0 +1,360 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry& operator=(directory_entry const&) = default;
+// directory_entry& operator=(directory_entry&&) noexcept = default;
+// void assign(path const&);
+// void replace_filename(path const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+TEST_SUITE(directory_entry_mods_suite)
+
+TEST_CASE(test_refresh_method) {
+  using namespace fs;
+  {
+    directory_entry e;
+    static_assert(noexcept(e.refresh()) == false,
+                  "operation cannot be noexcept");
+    static_assert(std::is_same<decltype(e.refresh()), void>::value,
+                  "operation must return void");
+  }
+  {
+    directory_entry e;
+    e.refresh();
+    TEST_CHECK(!e.exists());
+  }
+}
+
+TEST_CASE(test_refresh_ec_method) {
+  using namespace fs;
+  {
+    directory_entry e;
+    std::error_code ec;
+    static_assert(noexcept(e.refresh(ec)), "operation should be noexcept");
+    static_assert(std::is_same<decltype(e.refresh(ec)), void>::value,
+                  "operation must return void");
+  }
+  {
+    directory_entry e;
+    std::error_code ec = GetTestEC();
+    e.refresh(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+  }
+}
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+TEST_CASE(refresh_on_file_dne) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+
+  const perms old_perms = status(dir).permissions();
+
+  // test file doesn't exist
+  {
+    directory_entry ent(file);
+    remove(file);
+    TEST_CHECK(ent.exists());
+
+    ent.refresh();
+
+    permissions(dir, perms::none);
+    TEST_CHECK(!ent.exists());
+  }
+  permissions(dir, old_perms);
+  env.create_file("dir/file", 101);
+  {
+    directory_entry ent(file);
+    remove(file);
+    TEST_CHECK(ent.exists());
+
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    permissions(dir, perms::none);
+    TEST_CHECK(!ent.exists());
+  }
+}
+#endif
+
+void remove_if_exists(const fs::path& p) {
+  std::error_code ec;
+  remove(p, ec);
+}
+
+TEST_CASE(refresh_on_bad_symlink) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path sym = env.create_symlink("dir/file", "sym");
+
+  const perms old_perms = status(dir).permissions();
+
+  // test file doesn't exist
+  {
+    directory_entry ent(sym);
+    LIBCPP_ONLY(remove(file));
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.exists());
+
+    remove_if_exists(file);
+    ent.refresh();
+
+    LIBCPP_ONLY(permissions(dir, perms::none));
+    TEST_CHECK(ent.is_symlink());
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+    TEST_CHECK(!ent.is_regular_file());
+    TEST_CHECK(!ent.exists());
+#endif
+  }
+  permissions(dir, old_perms);
+  env.create_file("dir/file", 101);
+  {
+    directory_entry ent(sym);
+    LIBCPP_ONLY(remove(file));
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.exists());
+
+    remove_if_exists(file);
+
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(!ec); // we don't report bad symlinks as an error.
+
+    LIBCPP_ONLY(permissions(dir, perms::none));
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+    TEST_CHECK(!ent.exists());
+#endif
+  }
+}
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+TEST_CASE(refresh_cannot_resolve) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file1", 99);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path sym_in_dir = env.create_symlink("file1", "dir/sym1");
+  perms old_perms = status(dir).permissions();
+
+  {
+    directory_entry ent(file);
+    permissions(dir, perms::none);
+
+    TEST_CHECK(ent.is_regular_file());
+
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+    TEST_CHECK(ent.path() == file);
+
+    ExceptionChecker Checker(file, std::errc::permission_denied,
+                             "directory_entry::refresh");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.refresh());
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent(sym_in_dir);
+    permissions(dir, perms::none);
+    TEST_CHECK(ent.is_symlink());
+
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+    TEST_CHECK(ent.path() == sym_in_dir);
+
+    ExceptionChecker Checker(sym_in_dir, std::errc::permission_denied,
+                             "directory_entry::refresh");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.refresh());
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent(sym_out_of_dir);
+    permissions(dir, perms::none);
+    TEST_CHECK(ent.is_symlink());
+
+    // Failure to resolve the linked entity due to permissions is not
+    // reported as an error.
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(ent.is_symlink());
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.exists(ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+    TEST_CHECK(ent.path() == sym_out_of_dir);
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent_file(file);
+    directory_entry ent_sym(sym_in_dir);
+    directory_entry ent_sym2(sym_out_of_dir);
+    permissions(dir, perms::none);
+    ((void)ent_file);
+    ((void)ent_sym);
+
+    TEST_CHECK_THROW(filesystem_error, ent_file.refresh());
+    TEST_CHECK_THROW(filesystem_error, ent_sym.refresh());
+    TEST_CHECK_NO_THROW(ent_sym2);
+  }
+}
+#endif
+
+TEST_CASE(refresh_doesnt_throw_on_dne_but_reports_it) {
+  using namespace fs;
+  scoped_test_env env;
+
+  const path file = env.create_file("file1", 42);
+  const path sym = env.create_symlink("file1", "sym");
+
+  {
+    directory_entry ent(file);
+    TEST_CHECK(ent.file_size() == 42);
+
+    remove(file);
+
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+    TEST_CHECK_NO_THROW(ent.refresh());
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    // doesn't throw!
+    TEST_CHECK_THROW(filesystem_error, ent.file_size());
+  }
+  env.create_file("file1", 99);
+  {
+    directory_entry ent(sym);
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.file_size() == 99);
+
+    remove(file);
+
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    TEST_CHECK_THROW(filesystem_error, ent.file_size());
+  }
+}
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+TEST_CASE(access_cache_after_refresh_fails) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file1", 101);
+  const path sym = env.create_symlink("dir/file", "sym");
+  const path sym_in_dir = env.create_symlink("dir/file", "dir/sym2");
+
+  const perms old_perms = status(dir).permissions();
+
+#define CHECK_ACCESS(func, expect)                                             \
+  ec = GetTestEC();                                                            \
+  TEST_CHECK(ent.func(ec) == expect);                                          \
+  TEST_CHECK(ErrorIs(ec, std::errc::permission_denied))
+
+  // test file doesn't exist
+  {
+    directory_entry ent(file);
+
+    TEST_CHECK(!ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.exists());
+
+    permissions(dir, perms::none);
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    CHECK_ACCESS(exists, false);
+    CHECK_ACCESS(is_symlink, false);
+    CHECK_ACCESS(last_write_time, file_time_type::min());
+    CHECK_ACCESS(hard_link_count, uintmax_t(-1));
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent(sym_in_dir);
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.exists());
+
+    permissions(dir, perms::none);
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    CHECK_ACCESS(exists, false);
+    CHECK_ACCESS(is_symlink, false);
+    CHECK_ACCESS(last_write_time, file_time_type::min());
+    CHECK_ACCESS(hard_link_count, uintmax_t(-1));
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent(sym);
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.exists());
+
+    permissions(dir, perms::none);
+    std::error_code ec = GetTestEC();
+    ent.refresh(ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(ent.is_symlink());
+
+    CHECK_ACCESS(exists, false);
+    CHECK_ACCESS(is_regular_file, false);
+    CHECK_ACCESS(last_write_time, file_time_type::min());
+    CHECK_ACCESS(hard_link_count, uintmax_t(-1));
+  }
+#undef CHECK_ACCESS
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/replace_filename.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/replace_filename.pass.cpp
new file mode 100644
index 0000000..564e0e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.mods/replace_filename.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// directory_entry& operator=(directory_entry const&) = default;
+// directory_entry& operator=(directory_entry&&) noexcept = default;
+// void assign(path const&);
+// void replace_filename(path const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+TEST_SUITE(directory_entry_mods_suite)
+
+TEST_CASE(test_replace_filename_method) {
+  using namespace fs;
+
+  {
+    directory_entry e;
+    path replace;
+    static_assert(noexcept(e.replace_filename(replace)) == false,
+                  "operation cannot be noexcept");
+    static_assert(
+        std::is_same<decltype(e.replace_filename(replace)), void>::value,
+        "operation must return void");
+  }
+  {
+    const path p("/path/to/foo.exe");
+    const path replace("bar.out");
+    const path expect("/path/to/bar.out");
+    directory_entry e(p);
+    TEST_CHECK(e.path() == p);
+    e.replace_filename(replace);
+    TEST_CHECK(e.path() == expect);
+  }
+}
+
+TEST_CASE(test_replace_filename_ec_method) {
+  using namespace fs;
+
+  static_test_env static_env;
+  {
+    directory_entry e;
+    path replace;
+    std::error_code ec;
+    static_assert(noexcept(e.replace_filename(replace, ec)) == false,
+                  "operation cannot be noexcept");
+    static_assert(
+        std::is_same<decltype(e.replace_filename(replace, ec)), void>::value,
+        "operation must return void");
+  }
+  {
+    const path p("/path/to/foo.exe");
+    const path replace("bar.out");
+    const path expect("/path/to/bar.out");
+    directory_entry e(p);
+    TEST_CHECK(e.path() == p);
+    std::error_code ec = GetTestEC();
+    e.replace_filename(replace, ec);
+    TEST_CHECK(e.path() == expect);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+  }
+  {
+    const path p = static_env.EmptyFile;
+    const path expect = static_env.NonEmptyFile;
+    const path replace = static_env.NonEmptyFile.filename();
+    TEST_REQUIRE(expect.parent_path() == p.parent_path());
+    directory_entry e(p);
+    TEST_CHECK(e.path() == p);
+    std::error_code ec = GetTestEC();
+    e.replace_filename(replace, ec);
+    TEST_CHECK(e.path() == expect);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_CASE(test_replace_filename_calls_refresh) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_two = env.create_file("dir/file_two", 101);
+  const path sym = env.create_symlink("dir/file", "sym");
+  const path sym_two = env.create_symlink("dir/file_two", "sym_two");
+
+  {
+    directory_entry ent(file);
+    ent.replace_filename(file_two.filename());
+    TEST_REQUIRE(ent.path() == file_two);
+
+    // removing the file demonstrates that the values where cached previously.
+    LIBCPP_ONLY(remove(file_two));
+
+    TEST_CHECK(ent.file_size() == 101);
+  }
+  env.create_file("dir/file_two", 99);
+  {
+    directory_entry ent(sym);
+    ent.replace_filename(sym_two.filename());
+    TEST_REQUIRE(ent.path() == sym_two);
+
+    LIBCPP_ONLY(remove(file_two));
+    LIBCPP_ONLY(remove(sym_two));
+
+    TEST_CHECK(ent.is_symlink());
+    TEST_CHECK(ent.is_regular_file());
+    TEST_CHECK(ent.file_size() == 99);
+  }
+}
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+TEST_CASE(test_replace_filename_propagates_error) {
+  using namespace fs;
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_two = env.create_file("dir/file_two", 99);
+  const path file_out_of_dir = env.create_file("file_three", 101);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path sym_out_of_dir_two = env.create_symlink("dir/file", "sym_two");
+  const path sym_in_dir = env.create_symlink("file_two", "dir/sym_three");
+  const path sym_in_dir_two = env.create_symlink("file_two", "dir/sym_four");
+
+  const perms old_perms = status(dir).permissions();
+
+  {
+    directory_entry ent(file);
+    permissions(dir, perms::none);
+    std::error_code ec = GetTestEC();
+    ent.replace_filename(file_two.filename(), ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent(sym_in_dir);
+    permissions(dir, perms::none);
+    std::error_code ec = GetTestEC();
+    ent.replace_filename(sym_in_dir_two.filename(), ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+  }
+  permissions(dir, old_perms);
+  {
+    directory_entry ent(sym_out_of_dir);
+    permissions(dir, perms::none);
+    std::error_code ec = GetTestEC();
+    ent.replace_filename(sym_out_of_dir_two.filename(), ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(ent.is_symlink());
+    ec = GetTestEC();
+    TEST_CHECK(!ent.exists(ec));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+  }
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/comparisons.pass.cpp
new file mode 100644
index 0000000..6683ac1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/comparisons.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// bool operator==(directory_entry const&) const noexcept;
+// bool operator!=(directory_entry const&) const noexcept;
+// bool operator< (directory_entry const&) const noexcept;
+// bool operator<=(directory_entry const&) const noexcept;
+// bool operator> (directory_entry const&) const noexcept;
+// bool operator>=(directory_entry const&) const noexcept;
+// strong_ordering operator<=>(directory_entry const&) const noexcept;
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**) {
+  using namespace fs;
+
+  AssertComparisonsAreNoexcept<directory_entry>();
+  AssertComparisonsReturnBool<directory_entry>();
+#if TEST_STD_VER > 17
+  AssertOrderAreNoexcept<directory_entry>();
+  AssertOrderReturn<std::strong_ordering, directory_entry>();
+#endif
+
+  typedef std::pair<path, path> TestType;
+  TestType TestCases[] = {{"", ""}, {"", "a"}, {"a", "a"}, {"a", "b"}, {"foo/bar/baz", "foo/bar/baz/"}};
+  for (auto const& TC : TestCases) {
+    assert(testComparisonsValues<directory_entry>(TC.first, TC.second));
+    assert(testComparisonsValues<directory_entry>(TC.second, TC.first));
+#if TEST_STD_VER > 17
+    assert(testOrderValues<directory_entry>(TC.first, TC.second));
+    assert(testOrderValues<directory_entry>(TC.second, TC.first));
+#endif
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_size.pass.cpp
new file mode 100644
index 0000000..91a1452
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_size.pass.cpp
@@ -0,0 +1,254 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// class directory_entry
+
+// uintmax_t file_size() const;
+// uintmax_t file_size(error_code const&) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "filesystem_test_helper.h"
+#include "rapid-cxx-test.h"
+
+#include "test_macros.h"
+
+TEST_SUITE(directory_entry_obs_testsuite)
+
+TEST_CASE(signatures) {
+  using namespace fs;
+  {
+    const fs::directory_entry e = {};
+    std::error_code ec;
+    static_assert(std::is_same<decltype(e.file_size()), uintmax_t>::value, "");
+    static_assert(std::is_same<decltype(e.file_size(ec)), uintmax_t>::value,
+                  "");
+    static_assert(noexcept(e.file_size()) == false, "");
+    static_assert(noexcept(e.file_size(ec)) == true, "");
+  }
+}
+
+TEST_CASE(basic) {
+  using namespace fs;
+
+  scoped_test_env env;
+  const path file = env.create_file("file", 42);
+  const path dir = env.create_dir("dir");
+  const path sym = env.create_symlink("file", "sym");
+
+  {
+    directory_entry ent(file);
+    uintmax_t expect = file_size(ent);
+    TEST_CHECK(expect == 42);
+
+    // Remove the file to show that the results were already in the cache.
+    LIBCPP_ONLY(remove(file));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == expect);
+    TEST_CHECK(!ec);
+  }
+  env.create_file("file", 99);
+  {
+    directory_entry ent(sym);
+
+    uintmax_t expect = file_size(ent);
+    TEST_CHECK(expect == 99);
+
+    LIBCPP_ONLY(remove(ent));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == 99);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_CASE(not_regular_file) {
+  using namespace fs;
+
+  scoped_test_env env;
+  struct {
+    const path p;
+    std::errc expected_err;
+  } TestCases[] = {
+      {env.create_dir("dir"), std::errc::is_a_directory},
+#if !defined(_WIN32) && !defined(__ANDROID__)
+      {env.create_fifo("fifo"), std::errc::not_supported},
+#endif
+      {env.create_directory_symlink("dir", "sym"), std::errc::is_a_directory}};
+
+  for (auto const& TC : TestCases) {
+    const path& p = TC.p;
+    directory_entry ent(p);
+    TEST_CHECK(ent.path() == p);
+    std::error_code ec = GetTestEC(0);
+
+    std::error_code other_ec = GetTestEC(1);
+    uintmax_t expect = file_size(p, other_ec);
+
+    uintmax_t got = ent.file_size(ec);
+    TEST_CHECK(got == expect);
+    TEST_CHECK(got == uintmax_t(-1));
+    TEST_CHECK(ec == other_ec);
+    TEST_CHECK(ErrorIs(ec, TC.expected_err));
+
+    ExceptionChecker Checker(p, TC.expected_err, "directory_entry::file_size");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
+  }
+}
+
+TEST_CASE(error_reporting) {
+  using namespace fs;
+
+  static_test_env static_env;
+  scoped_test_env env;
+
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file2", 101);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path sym_in_dir = env.create_symlink("file2", "dir/sym2");
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+  const perms old_perms = status(dir).permissions();
+#endif
+
+  // test a file which doesn't exist
+  {
+    directory_entry ent;
+
+    std::error_code ec = GetTestEC();
+    ent.assign(static_env.DNE, ec);
+    TEST_REQUIRE(ent.path() == static_env.DNE);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ExceptionChecker Checker(static_env.DNE,
+                             std::errc::no_such_file_or_directory,
+                             "directory_entry::file_size");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
+  }
+  // test a dead symlink
+  {
+    directory_entry ent;
+
+    std::error_code ec = GetTestEC();
+    uintmax_t expect_bad = file_size(static_env.BadSymlink, ec);
+    TEST_CHECK(expect_bad == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ec = GetTestEC();
+    ent.assign(static_env.BadSymlink, ec);
+    TEST_REQUIRE(ent.path() == static_env.BadSymlink);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == expect_bad);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ExceptionChecker Checker(static_env.BadSymlink,
+                             std::errc::no_such_file_or_directory,
+                             "directory_entry::file_size");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
+  }
+  // Windows doesn't support setting perms::none to trigger failures
+  // reading directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+  // test a file w/o appropriate permissions.
+  {
+    directory_entry ent;
+    uintmax_t expect_good = file_size(file);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(file, ec);
+    TEST_REQUIRE(ent.path() == file);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(file, std::errc::permission_denied, "file_size");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.file_size());
+  }
+  permissions(dir, old_perms);
+  // test a symlink w/o appropriate permissions.
+  {
+    directory_entry ent;
+    uintmax_t expect_good = file_size(sym_in_dir);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_in_dir, ec);
+    TEST_REQUIRE(ent.path() == sym_in_dir);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(sym_in_dir, std::errc::permission_denied,
+                             "file_size");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.file_size());
+  }
+  permissions(dir, old_perms);
+  // test a symlink to a file w/o appropriate permissions
+  {
+    directory_entry ent;
+    uintmax_t expect_good = file_size(sym_out_of_dir);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_out_of_dir, ec);
+    TEST_REQUIRE(ent.path() == sym_out_of_dir);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(sym_out_of_dir, std::errc::permission_denied,
+                             "file_size");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.file_size());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.file_size(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.file_size());
+  }
+#endif
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_type_obs.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_type_obs.pass.cpp
new file mode 100644
index 0000000..a48757d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_type_obs.pass.cpp
@@ -0,0 +1,283 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// file_status status() const;
+// file_status status(error_code const&) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "filesystem_test_helper.h"
+#include "rapid-cxx-test.h"
+
+#include "test_macros.h"
+
+TEST_SUITE(directory_entry_obs_testsuite)
+
+TEST_CASE(file_dne) {
+  using namespace fs;
+  directory_entry p("dne");
+}
+
+TEST_CASE(signatures) {
+  using namespace fs;
+  const directory_entry e = {};
+  std::error_code ec;
+#define TEST_FUNC(name)                                                        \
+  static_assert(std::is_same<decltype(e.name()), bool>::value,                 \
+                "wrong return type");                                          \
+  static_assert(noexcept(e.name()) == false, "should not be noexcept");        \
+  static_assert(std::is_same<decltype(e.name(ec)), bool>::value,               \
+                "wrong return type");                                          \
+  static_assert(noexcept(e.name(ec)) == true, "should be noexcept")
+
+  TEST_FUNC(exists);
+  TEST_FUNC(is_block_file);
+  TEST_FUNC(is_character_file);
+  TEST_FUNC(is_directory);
+  TEST_FUNC(is_fifo);
+  TEST_FUNC(is_other);
+  TEST_FUNC(is_regular_file);
+  TEST_FUNC(is_socket);
+  TEST_FUNC(is_symlink);
+
+#undef TEST_FUNC
+}
+
+TEST_CASE(test_without_ec) {
+  using namespace fs;
+  using fs::directory_entry;
+  using fs::file_status;
+  using fs::path;
+
+  scoped_test_env env;
+  path f = env.create_file("foo", 42);
+  path d = env.create_dir("dir");
+#if !defined(__ANDROID__)
+  path hl = env.create_hardlink("foo", "hl");
+#endif
+  auto test_path = [=](const path &p) {
+    directory_entry e(p);
+    file_status st = status(p);
+    file_status sym_st = symlink_status(p);
+    fs::remove(p);
+    TEST_REQUIRE(e.exists());
+    TEST_REQUIRE(!exists(p));
+    TEST_CHECK(e.exists() == exists(st));
+    TEST_CHECK(e.is_block_file() == is_block_file(st));
+    TEST_CHECK(e.is_character_file() == is_character_file(st));
+    TEST_CHECK(e.is_directory() == is_directory(st));
+    TEST_CHECK(e.is_fifo() == is_fifo(st));
+    TEST_CHECK(e.is_other() == is_other(st));
+    TEST_CHECK(e.is_regular_file() == is_regular_file(st));
+    TEST_CHECK(e.is_socket() == is_socket(st));
+    TEST_CHECK(e.is_symlink() == is_symlink(sym_st));
+  };
+  test_path(f);
+  test_path(d);
+#if !defined(__ANDROID__)
+  test_path(hl);
+#endif
+#if !defined(_WIN32) && !defined(__ANDROID__)
+  path fifo = env.create_fifo("fifo");
+  test_path(fifo);
+#endif
+}
+
+TEST_CASE(test_with_ec) {
+  using namespace fs;
+  using fs::directory_entry;
+  using fs::file_status;
+  using fs::path;
+
+  scoped_test_env env;
+  path f = env.create_file("foo", 42);
+  path d = env.create_dir("dir");
+#if !defined(__ANDROID__)
+  path hl = env.create_hardlink("foo", "hl");
+#endif
+  auto test_path = [=](const path &p) {
+    directory_entry e(p);
+    std::error_code status_ec = GetTestEC();
+    std::error_code sym_status_ec = GetTestEC(1);
+    file_status st = status(p, status_ec);
+    file_status sym_st = symlink_status(p, sym_status_ec);
+    fs::remove(p);
+    std::error_code ec = GetTestEC(2);
+    auto CheckEC = [&](std::error_code const& other_ec) {
+      bool res = ec == other_ec;
+      ec = GetTestEC(2);
+      return res;
+    };
+
+    TEST_REQUIRE(e.exists(ec));
+    TEST_CHECK(CheckEC(status_ec));
+    TEST_REQUIRE(!exists(p));
+
+    TEST_CHECK(e.exists(ec) == exists(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_block_file(ec) == is_block_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_character_file(ec) == is_character_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_directory(ec) == is_directory(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_fifo(ec) == is_fifo(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_other(ec) == is_other(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_regular_file(ec) == is_regular_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_socket(ec) == is_socket(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_symlink(ec) == is_symlink(sym_st));
+    TEST_CHECK(CheckEC(sym_status_ec));
+  };
+  test_path(f);
+  test_path(d);
+#if !defined(__ANDROID__)
+  test_path(hl);
+#endif
+#if !defined(_WIN32) && !defined(__ANDROID__)
+  path fifo = env.create_fifo("fifo");
+  test_path(fifo);
+#endif
+}
+
+TEST_CASE(test_with_ec_dne) {
+  using namespace fs;
+  using fs::directory_entry;
+  using fs::file_status;
+  using fs::path;
+  static_test_env static_env;
+  for (auto p : {static_env.DNE, static_env.BadSymlink}) {
+
+    directory_entry e(p);
+    std::error_code status_ec = GetTestEC();
+    std::error_code sym_status_ec = GetTestEC(1);
+    file_status st = status(p, status_ec);
+    file_status sym_st = symlink_status(p, sym_status_ec);
+    std::error_code ec = GetTestEC(2);
+    auto CheckEC = [&](std::error_code const& other_ec) {
+      bool res = ec == other_ec;
+      ec = GetTestEC(2);
+      return res;
+    };
+
+    TEST_CHECK(e.exists(ec) == exists(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_block_file(ec) == is_block_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_character_file(ec) == is_character_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_directory(ec) == is_directory(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_fifo(ec) == is_fifo(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_other(ec) == is_other(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_regular_file(ec) == is_regular_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_socket(ec) == is_socket(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_symlink(ec) == is_symlink(sym_st));
+    TEST_CHECK(CheckEC(sym_status_ec));
+  }
+}
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+TEST_CASE(test_with_ec_cannot_resolve) {
+  using namespace fs;
+  using fs::directory_entry;
+  using fs::file_status;
+  using fs::path;
+
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file2", 99);
+  const path sym = env.create_symlink("file2", "dir/sym");
+
+  perms old_perms = fs::status(dir).permissions();
+
+  for (auto p : {file, sym}) {
+    permissions(dir, old_perms);
+    directory_entry e(p);
+
+    permissions(dir, perms::none);
+    std::error_code dummy_ec;
+    e.refresh(dummy_ec);
+    TEST_REQUIRE(dummy_ec);
+
+    std::error_code status_ec = GetTestEC();
+    std::error_code sym_status_ec = GetTestEC(1);
+    file_status st = status(p, status_ec);
+    file_status sym_st = symlink_status(p, sym_status_ec);
+    std::error_code ec = GetTestEC(2);
+    auto CheckEC = [&](std::error_code const& other_ec) {
+      bool res = ec == other_ec;
+      ec = GetTestEC(2);
+      return res;
+    };
+
+    TEST_CHECK(e.exists(ec) == exists(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_block_file(ec) == is_block_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_character_file(ec) == is_character_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_directory(ec) == is_directory(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_fifo(ec) == is_fifo(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_other(ec) == is_other(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_regular_file(ec) == is_regular_file(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_socket(ec) == is_socket(st));
+    TEST_CHECK(CheckEC(status_ec));
+
+    TEST_CHECK(e.is_symlink(ec) == is_symlink(sym_st));
+    TEST_CHECK(CheckEC(sym_status_ec));
+  }
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/hard_link_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/hard_link_count.pass.cpp
new file mode 100644
index 0000000..f083b76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/hard_link_count.pass.cpp
@@ -0,0 +1,261 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// class directory_entry
+
+// uintmax_t hard_link_count() const;
+// uintmax_t hard_link_count(error_code const&) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "filesystem_test_helper.h"
+#include "rapid-cxx-test.h"
+
+#include "test_macros.h"
+
+TEST_SUITE(directory_entry_obs_testsuite)
+
+TEST_CASE(signatures) {
+  using namespace fs;
+  {
+    const directory_entry e = {};
+    std::error_code ec;
+    static_assert(std::is_same<decltype(e.hard_link_count()), uintmax_t>::value, "");
+    static_assert(std::is_same<decltype(e.hard_link_count(ec)), uintmax_t>::value,
+                  "");
+    static_assert(noexcept(e.hard_link_count()) == false, "");
+    static_assert(noexcept(e.hard_link_count(ec)) == true, "");
+  }
+}
+
+TEST_CASE(basic) {
+  using namespace fs;
+
+  scoped_test_env env;
+  const path file = env.create_file("file", 42);
+  const path dir = env.create_dir("dir");
+  const path sym = env.create_symlink("file", "sym");
+
+  {
+    directory_entry ent(file);
+    uintmax_t expect = hard_link_count(ent);
+
+    // Remove the file to show that the results were already in the cache.
+    LIBCPP_ONLY(remove(file));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect);
+    TEST_CHECK(!ec);
+  }
+  {
+    directory_entry ent(dir);
+    uintmax_t expect = hard_link_count(ent);
+
+    LIBCPP_ONLY(remove(dir));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect);
+    TEST_CHECK(!ec);
+  }
+#if !defined(__ANDROID__)
+  env.create_file("file", 99);
+  env.create_hardlink("file", "hl");
+  {
+    directory_entry ent(sym);
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == 2);
+    TEST_CHECK(!ec);
+  }
+#endif
+}
+
+TEST_CASE(not_regular_file) {
+  using namespace fs;
+
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path dir2 = env.create_dir("dir/dir2");
+
+  const perms old_perms = status(dir).permissions();
+
+  auto test_path = [=](const path &p) {
+    std::error_code dummy_ec = GetTestEC();
+    directory_entry ent(p, dummy_ec);
+    TEST_CHECK(!dummy_ec);
+
+    uintmax_t expect = hard_link_count(p);
+
+    LIBCPP_ONLY(permissions(dir, perms::none));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.hard_link_count());
+    permissions(dir, old_perms);
+  };
+  test_path(dir2);
+#if !defined(_WIN32) && !defined(__ANDROID__)
+  const path fifo = env.create_fifo("dir/fifo");
+  const path sym_to_fifo = env.create_symlink("dir/fifo", "dir/sym");
+  test_path(fifo);
+  test_path(sym_to_fifo);
+#endif
+}
+
+TEST_CASE(error_reporting) {
+  using namespace fs;
+
+  static_test_env static_env;
+  scoped_test_env env;
+
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file2", 101);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path sym_in_dir = env.create_symlink("file2", "dir/sym2");
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+  const perms old_perms = status(dir).permissions();
+#endif
+
+  // test a file which doesn't exist
+  {
+    directory_entry ent;
+
+    std::error_code ec = GetTestEC();
+    ent.assign(static_env.DNE, ec);
+    TEST_CHECK(ec);
+    TEST_REQUIRE(ent.path() == static_env.DNE);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ExceptionChecker Checker(static_env.DNE,
+                             std::errc::no_such_file_or_directory,
+                             "directory_entry::hard_link_count");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.hard_link_count());
+  }
+  // test a dead symlink
+  {
+    directory_entry ent;
+
+    std::error_code ec = GetTestEC();
+    uintmax_t expect_bad = hard_link_count(static_env.BadSymlink, ec);
+    TEST_CHECK(expect_bad == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ec = GetTestEC();
+    ent.assign(static_env.BadSymlink, ec);
+    TEST_REQUIRE(ent.path() == static_env.BadSymlink);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect_bad);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ExceptionChecker Checker(static_env.BadSymlink,
+                             std::errc::no_such_file_or_directory,
+                             "directory_entry::hard_link_count");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.hard_link_count());
+  }
+  // Windows doesn't support setting perms::none to trigger failures
+  // reading directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+  // test a file w/o appropriate permissions.
+  {
+    directory_entry ent;
+    uintmax_t expect_good = hard_link_count(file);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(file, ec);
+    TEST_REQUIRE(ent.path() == file);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(file, std::errc::permission_denied,
+                             "hard_link_count");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.hard_link_count());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.hard_link_count());
+  }
+  permissions(dir, old_perms);
+  // test a symlink w/o appropriate permissions.
+  {
+    directory_entry ent;
+    uintmax_t expect_good = hard_link_count(sym_in_dir);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_in_dir, ec);
+    TEST_REQUIRE(ent.path() == sym_in_dir);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(sym_in_dir, std::errc::permission_denied,
+                             "hard_link_count");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.hard_link_count());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.hard_link_count());
+  }
+  permissions(dir, old_perms);
+  // test a symlink to a file w/o appropriate permissions
+  {
+    directory_entry ent;
+    uintmax_t expect_good = hard_link_count(sym_out_of_dir);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_out_of_dir, ec);
+    TEST_REQUIRE(ent.path() == sym_out_of_dir);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == uintmax_t(-1));
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(sym_out_of_dir, std::errc::permission_denied,
+                             "hard_link_count");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.hard_link_count());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.hard_link_count(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.hard_link_count());
+  }
+#endif
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/last_write_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/last_write_time.pass.cpp
new file mode 100644
index 0000000..dc0a1f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/last_write_time.pass.cpp
@@ -0,0 +1,227 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// class directory_entry
+
+// file_time_type last_write_time() const;
+// file_time_type last_write_time(error_code const&) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "filesystem_test_helper.h"
+#include "rapid-cxx-test.h"
+
+#include "test_macros.h"
+
+TEST_SUITE(directory_entry_obs_testsuite)
+
+TEST_CASE(signatures) {
+  using namespace fs;
+  {
+    const fs::directory_entry e = {};
+    std::error_code ec;
+    static_assert(std::is_same<decltype(e.last_write_time()), file_time_type>::value,
+                  "");
+    static_assert(std::is_same<decltype(e.last_write_time(ec)), file_time_type>::value,
+                  "");
+    static_assert(noexcept(e.last_write_time()) == false, "");
+    static_assert(noexcept(e.last_write_time(ec)) == true, "");
+  }
+}
+
+TEST_CASE(basic) {
+  using namespace fs;
+
+  scoped_test_env env;
+  const path file = env.create_file("file", 42);
+  const path dir = env.create_dir("dir");
+  const path sym = env.create_symlink("file", "sym");
+
+  {
+    directory_entry ent(file);
+    file_time_type expect = last_write_time(ent);
+
+    // Remove the file to show that the results were already in the cache.
+    LIBCPP_ONLY(remove(file));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect);
+    TEST_CHECK(!ec);
+  }
+  {
+    directory_entry ent(dir);
+    file_time_type expect = last_write_time(ent);
+
+    LIBCPP_ONLY(remove(dir));
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect);
+    TEST_CHECK(!ec);
+  }
+  env.create_file("file", 99);
+  {
+    directory_entry ent(sym);
+    file_time_type expect = last_write_time(sym);
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_CASE(error_reporting) {
+  using namespace fs;
+
+  static_test_env static_env;
+  scoped_test_env env;
+
+  const path dir = env.create_dir("dir");
+  const path file = env.create_file("dir/file", 42);
+  const path file_out_of_dir = env.create_file("file2", 101);
+  const path sym_out_of_dir = env.create_symlink("dir/file", "sym");
+  const path sym_in_dir = env.create_symlink("file2", "dir/sym2");
+
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+  const perms old_perms = status(dir).permissions();
+#endif
+
+  // test a file which doesn't exist
+  {
+    directory_entry ent;
+
+    std::error_code ec = GetTestEC();
+    ent.assign(static_env.DNE, ec);
+    TEST_REQUIRE(ent.path() == static_env.DNE);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ExceptionChecker Checker(static_env.DNE,
+                             std::errc::no_such_file_or_directory,
+                             "directory_entry::last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.last_write_time());
+  }
+  // test a dead symlink
+  {
+    directory_entry ent;
+
+    std::error_code ec = GetTestEC();
+    file_time_type expect_bad = last_write_time(static_env.BadSymlink, ec);
+    TEST_CHECK(expect_bad == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ec = GetTestEC();
+    ent.assign(static_env.BadSymlink, ec);
+    TEST_REQUIRE(ent.path() == static_env.BadSymlink);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect_bad);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+
+    ExceptionChecker Checker(static_env.BadSymlink,
+                             std::errc::no_such_file_or_directory,
+                             "directory_entry::last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.last_write_time());
+  }
+  // Windows doesn't support setting perms::none to trigger failures
+  // reading directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+  // test a file w/o appropriate permissions.
+  {
+    directory_entry ent;
+    file_time_type expect_good = last_write_time(file);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(file, ec);
+    TEST_REQUIRE(ent.path() == file);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(file, std::errc::permission_denied,
+                             "last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.last_write_time());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.last_write_time());
+  }
+  permissions(dir, old_perms);
+  // test a symlink w/o appropriate permissions.
+  {
+    directory_entry ent;
+    file_time_type expect_good = last_write_time(sym_in_dir);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_in_dir, ec);
+    TEST_REQUIRE(ent.path() == sym_in_dir);
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(sym_in_dir, std::errc::permission_denied,
+                             "last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.last_write_time());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.last_write_time());
+  }
+  permissions(dir, old_perms);
+  // test a symlink to a file w/o appropriate permissions
+  {
+    directory_entry ent;
+    file_time_type expect_good = last_write_time(sym_out_of_dir);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    ent.assign(sym_out_of_dir, ec);
+    TEST_REQUIRE(ent.path() == sym_out_of_dir);
+    TEST_CHECK(!ec);
+
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(sym_out_of_dir, std::errc::permission_denied,
+                             "last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ent.last_write_time());
+
+    permissions(dir, old_perms);
+    ec = GetTestEC();
+    TEST_CHECK(ent.last_write_time(ec) == expect_good);
+    TEST_CHECK(!ec);
+    TEST_CHECK_NO_THROW(ent.last_write_time());
+  }
+#endif
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/path.pass.cpp
new file mode 100644
index 0000000..967fc91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/path.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// const path& path() const noexcept;
+// operator const path&() const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+void test_path_method() {
+  using namespace fs;
+  const path p("foo/bar/baz.exe");
+  const path p2("abc");
+  {
+    directory_entry nce;
+    const directory_entry e("");
+    static_assert(std::is_same<decltype(e.path()),  const path&>::value, "");
+    static_assert(std::is_same<decltype(nce.path()), const path&>::value, "");
+    static_assert(noexcept(e.path()) && noexcept(nce.path()), "");
+  }
+  {
+    directory_entry e(p);
+    path const& pref = e.path();
+    assert(pref == p);
+    assert(&pref == &e.path());
+    e.assign(p2);
+    assert(pref == p2);
+    assert(&pref == &e.path());
+  }
+}
+
+void test_path_conversion() {
+  using namespace fs;
+  const path p("foo/bar/baz.exe");
+  const path p2("abc");
+  {
+    directory_entry nce;
+    const directory_entry e("");
+    // Check conversions exist
+    static_assert(std::is_convertible<directory_entry&,        path const&>::value, "");
+    static_assert(std::is_convertible<directory_entry const&,  path const&>::value, "");
+    static_assert(std::is_convertible<directory_entry &&,      path const&>::value, "");
+    static_assert(std::is_convertible<directory_entry const&&, path const&>::value, "");
+    // Not convertible to non-const
+    static_assert(!std::is_convertible<directory_entry&,        path&>::value, "");
+    static_assert(!std::is_convertible<directory_entry const&,  path&>::value, "");
+    static_assert(!std::is_convertible<directory_entry &&,      path&>::value, "");
+    static_assert(!std::is_convertible<directory_entry const&&, path&>::value, "");
+    // conversions are noexcept
+    static_assert(noexcept(e.operator fs::path const&()) &&
+                  noexcept(e.operator fs::path const&()), "");
+  }
+  // const
+  {
+    directory_entry const e(p);
+    path const& pref = e;
+    assert(&pref == &e.path());
+  }
+  // non-const
+  {
+    directory_entry e(p);
+    path const& pref = e;
+    assert(&pref == &e.path());
+
+    e.assign(p2);
+    assert(pref == p2);
+    assert(&pref == &e.path());
+  }
+}
+
+int main(int, char**) {
+  test_path_method();
+  test_path_conversion();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/status.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/status.pass.cpp
new file mode 100644
index 0000000..ce4f286
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/status.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// file_status status() const;
+// file_status status(error_code const&) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "filesystem_test_helper.h"
+#include "rapid-cxx-test.h"
+
+#include "test_macros.h"
+
+TEST_SUITE(directory_entry_status_testsuite)
+
+TEST_CASE(test_basic) {
+  using namespace fs;
+  static_test_env static_env;
+  {
+    const fs::directory_entry e("foo");
+    std::error_code ec;
+    static_assert(std::is_same<decltype(e.status()), fs::file_status>::value, "");
+    static_assert(std::is_same<decltype(e.status(ec)), fs::file_status>::value, "");
+    static_assert(noexcept(e.status()) == false, "");
+    static_assert(noexcept(e.status(ec)) == true, "");
+  }
+  path TestCases[] = {static_env.File, static_env.Dir, static_env.SymlinkToFile,
+                      static_env.DNE};
+  for (const auto& p : TestCases) {
+    const directory_entry e(p);
+    std::error_code pec = GetTestEC(), eec = GetTestEC(1);
+    file_status ps = fs::status(p, pec);
+    file_status es = e.status(eec);
+    TEST_CHECK(ps.type() == es.type());
+    TEST_CHECK(ps.permissions() == es.permissions());
+    TEST_CHECK(pec == eec);
+  }
+  for (const auto& p : TestCases) {
+    const directory_entry e(p);
+    file_status ps = fs::status(p);
+    file_status es = e.status();
+    TEST_CHECK(ps.type() == es.type());
+    TEST_CHECK(ps.permissions() == es.permissions());
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/symlink_status.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/symlink_status.pass.cpp
new file mode 100644
index 0000000..364b832
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/symlink_status.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_entry
+
+// file_status symlink_status() const;
+// file_status symlink_status(error_code&) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "filesystem_test_helper.h"
+#include "rapid-cxx-test.h"
+
+#include "test_macros.h"
+
+TEST_SUITE(directory_entry_obs_suite)
+
+TEST_CASE(test_signature) {
+  using namespace fs;
+  static_test_env static_env;
+  {
+    const directory_entry e("foo");
+    std::error_code ec;
+    static_assert(std::is_same<decltype(e.symlink_status()), file_status>::value, "");
+    static_assert(std::is_same<decltype(e.symlink_status(ec)), file_status>::value, "");
+    static_assert(noexcept(e.symlink_status()) == false, "");
+    static_assert(noexcept(e.symlink_status(ec)) == true, "");
+  }
+  path TestCases[] = {static_env.File, static_env.Dir, static_env.SymlinkToFile,
+                      static_env.DNE};
+  for (const auto& p : TestCases) {
+    const directory_entry e(p);
+    std::error_code pec = GetTestEC(), eec = GetTestEC(1);
+    file_status ps = fs::symlink_status(p, pec);
+    file_status es = e.symlink_status(eec);
+    TEST_CHECK(ps.type() == es.type());
+    TEST_CHECK(ps.permissions() == es.permissions());
+    TEST_CHECK(pec == eec);
+  }
+  for (const auto& p : TestCases) {
+    const directory_entry e(p);
+    file_status ps = fs::symlink_status(p);
+    file_status es = e.symlink_status();
+    TEST_CHECK(ps.type() == es.type());
+    TEST_CHECK(ps.permissions() == es.permissions());
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/copy.pass.cpp
new file mode 100644
index 0000000..47041cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/copy.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator(directory_iterator const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_copy_construct_tests)
+
+TEST_CASE(test_constructor_signature)
+{
+    using D = directory_iterator;
+    static_assert(std::is_copy_constructible<D>::value, "");
+}
+
+TEST_CASE(test_copy_end_iterator)
+{
+    const directory_iterator endIt;
+    directory_iterator it(endIt);
+    TEST_CHECK(it == endIt);
+}
+
+TEST_CASE(test_copy_valid_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const directory_iterator endIt{};
+
+    const directory_iterator it(testDir);
+    TEST_REQUIRE(it != endIt);
+    const path entry = *it;
+
+    const directory_iterator it2(it);
+    TEST_REQUIRE(it2 == it);
+    TEST_CHECK(*it2 == entry);
+    TEST_CHECK(*it == entry);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/copy_assign.pass.cpp
new file mode 100644
index 0000000..e6f6d16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/copy_assign.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator& operator=(directory_iterator const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_copy_assign_tests)
+
+TEST_CASE(test_assignment_signature)
+{
+    using D = directory_iterator;
+    static_assert(std::is_copy_assignable<D>::value, "");
+}
+
+TEST_CASE(test_copy_to_end_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+
+    const directory_iterator from(testDir);
+    TEST_REQUIRE(from != directory_iterator{});
+    const path entry = *from;
+
+    directory_iterator to{};
+    to = from;
+    TEST_REQUIRE(to == from);
+    TEST_CHECK(*to == entry);
+    TEST_CHECK(*from == entry);
+}
+
+
+TEST_CASE(test_copy_from_end_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+
+    const directory_iterator from{};
+
+    directory_iterator to(testDir);
+    TEST_REQUIRE(to != directory_iterator{});
+
+    to = from;
+    TEST_REQUIRE(to == from);
+    TEST_CHECK(to == directory_iterator{});
+}
+
+TEST_CASE(test_copy_valid_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const directory_iterator endIt{};
+
+    directory_iterator it_obj(testDir);
+    const directory_iterator& it = it_obj;
+    TEST_REQUIRE(it != endIt);
+    ++it_obj;
+    TEST_REQUIRE(it != endIt);
+    const path entry = *it;
+
+    directory_iterator it2(testDir);
+    TEST_REQUIRE(it2 != it);
+    const path entry2 = *it2;
+    TEST_CHECK(entry2 != entry);
+
+    it2 = it;
+    TEST_REQUIRE(it2 == it);
+    TEST_CHECK(*it2 == entry);
+}
+
+TEST_CASE(test_returns_reference_to_self)
+{
+    const directory_iterator it;
+    directory_iterator it2;
+    directory_iterator& ref = (it2 = it);
+    TEST_CHECK(&ref == &it2);
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/ctor.pass.cpp
new file mode 100644
index 0000000..4ab9a2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/ctor.pass.cpp
@@ -0,0 +1,266 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// explicit directory_iterator(const path& p);
+// directory_iterator(const path& p, directory_options options);
+// directory_iterator(const path& p, error_code& ec);
+// directory_iterator(const path& p, directory_options options, error_code& ec);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_constructor_tests)
+
+TEST_CASE(test_constructor_signatures)
+{
+    using D = directory_iterator;
+
+    // explicit directory_iterator(path const&);
+    static_assert(!std::is_convertible<path, D>::value, "");
+    static_assert(std::is_constructible<D, path>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path>::value, "");
+
+    // directory_iterator(path const&, error_code&)
+    static_assert(std::is_constructible<D, path,
+        std::error_code&>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path,
+        std::error_code&>::value, "");
+
+    // directory_iterator(path const&, directory_options);
+    static_assert(std::is_constructible<D, path, directory_options>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path, directory_options>::value, "");
+
+    // directory_iterator(path const&, directory_options, error_code&)
+    static_assert(std::is_constructible<D, path, directory_options,
+        std::error_code&>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path, directory_options,
+        std::error_code&>::value, "");
+
+}
+
+TEST_CASE(test_construction_from_bad_path)
+{
+    static_test_env static_env;
+    std::error_code ec;
+    directory_options opts = directory_options::none;
+    const directory_iterator endIt;
+
+    const path testPaths[] = { static_env.DNE, static_env.BadSymlink };
+    for (path const& testPath : testPaths)
+    {
+        {
+            directory_iterator it(testPath, ec);
+            TEST_CHECK(ec);
+            TEST_CHECK(it == endIt);
+        }
+        {
+            directory_iterator it(testPath, opts, ec);
+            TEST_CHECK(ec);
+            TEST_CHECK(it == endIt);
+        }
+        {
+            TEST_CHECK_THROW(filesystem_error, directory_iterator(testPath));
+            TEST_CHECK_THROW(filesystem_error, directory_iterator(testPath, opts));
+        }
+    }
+}
+
+TEST_CASE(access_denied_test_case)
+{
+    using namespace fs;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path testDir = GetWindowsInaccessibleDir();
+    if (testDir.empty())
+        TEST_UNSUPPORTED();
+#else
+    scoped_test_env env;
+    path const testDir = env.make_env_path("dir1");
+    path const testFile = testDir / "testFile";
+    env.create_dir(testDir);
+    env.create_file(testFile, 42);
+
+    // Test that we can iterator over the directory before changing the perms
+    {
+        directory_iterator it(testDir);
+        TEST_REQUIRE(it != directory_iterator{});
+    }
+    // Change the permissions so we can no longer iterate
+    permissions(testDir, perms::none);
+#endif
+
+    // Check that the construction fails when skip_permissions_denied is
+    // not given.
+    {
+        std::error_code ec;
+        directory_iterator it(testDir, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == directory_iterator{});
+    }
+    // Check that construction does not report an error when
+    // 'skip_permissions_denied' is given.
+    {
+        std::error_code ec;
+        directory_iterator it(testDir, directory_options::skip_permission_denied, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it == directory_iterator{});
+    }
+}
+
+
+TEST_CASE(access_denied_to_file_test_case)
+{
+    using namespace fs;
+    scoped_test_env env;
+    path const testFile = env.make_env_path("file1");
+    env.create_file(testFile, 42);
+
+    // Change the permissions so we can no longer iterate
+    permissions(testFile, perms::none);
+
+    // Check that the construction fails when skip_permissions_denied is
+    // not given.
+    {
+        std::error_code ec;
+        directory_iterator it(testFile, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == directory_iterator{});
+    }
+    // Check that construction still fails when 'skip_permissions_denied' is given
+    // because we tried to open a file and not a directory.
+    {
+        std::error_code ec;
+        directory_iterator it(testFile, directory_options::skip_permission_denied, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == directory_iterator{});
+    }
+}
+
+TEST_CASE(test_open_on_empty_directory_equals_end)
+{
+    scoped_test_env env;
+    const path testDir = env.make_env_path("dir1");
+    env.create_dir(testDir);
+
+    const directory_iterator endIt;
+    {
+        std::error_code ec;
+        directory_iterator it(testDir, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(it == endIt);
+    }
+    {
+        directory_iterator it(testDir);
+        TEST_CHECK(it == endIt);
+    }
+}
+
+TEST_CASE(test_open_on_directory_succeeds)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    std::set<path> dir_contents(static_env.DirIterationList.begin(),
+                                static_env.DirIterationList.end());
+    const directory_iterator endIt{};
+
+    {
+        std::error_code ec;
+        directory_iterator it(testDir, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it != endIt);
+        TEST_CHECK(dir_contents.count(*it));
+    }
+    {
+        directory_iterator it(testDir);
+        TEST_CHECK(it != endIt);
+        TEST_CHECK(dir_contents.count(*it));
+    }
+}
+
+TEST_CASE(test_open_on_file_fails)
+{
+    static_test_env static_env;
+    const path testFile = static_env.File;
+    const directory_iterator endIt{};
+    {
+        std::error_code ec;
+        directory_iterator it(testFile, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == endIt);
+    }
+    {
+        TEST_CHECK_THROW(filesystem_error, directory_iterator(testFile));
+    }
+}
+
+TEST_CASE(test_open_on_empty_string)
+{
+    const path testPath = "";
+    const directory_iterator endIt{};
+
+    std::error_code ec;
+    directory_iterator it(testPath, ec);
+    TEST_CHECK(ec);
+    TEST_CHECK(it == endIt);
+}
+
+TEST_CASE(test_open_on_dot_dir)
+{
+    const path testPath = ".";
+
+    std::error_code ec;
+    directory_iterator it(testPath, ec);
+    TEST_CHECK(!ec);
+}
+
+TEST_CASE(test_open_on_symlink)
+{
+    static_test_env static_env;
+    const path symlinkToDir = static_env.SymlinkToDir;
+    std::set<path> dir_contents;
+    for (path const& p : static_env.DirIterationList) {
+        dir_contents.insert(p.filename());
+    }
+    const directory_iterator endIt{};
+
+    {
+        std::error_code ec;
+        directory_iterator it(symlinkToDir, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it != endIt);
+        path const& entry = *it;
+        TEST_CHECK(dir_contents.count(entry.filename()));
+    }
+    {
+        std::error_code ec;
+        directory_iterator it(symlinkToDir,
+                              directory_options::follow_directory_symlink, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it != endIt);
+        path const& entry = *it;
+        TEST_CHECK(dir_contents.count(entry.filename()));
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/default_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/default_ctor.pass.cpp
new file mode 100644
index 0000000..c9dcc65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/default_ctor.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator::directory_iterator() noexcept
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+    {
+        static_assert(std::is_nothrow_default_constructible<fs::directory_iterator>::value, "");
+    }
+    {
+        fs::directory_iterator d1;
+        const fs::directory_iterator d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/increment.pass.cpp
new file mode 100644
index 0000000..09b5139
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/increment.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator& operator++();
+// directory_iterator& increment(error_code& ec);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_increment_tests)
+
+TEST_CASE(test_increment_signatures)
+{
+    directory_iterator d; ((void)d);
+    std::error_code ec; ((void)ec);
+
+    ASSERT_SAME_TYPE(decltype(++d), directory_iterator&);
+    ASSERT_NOT_NOEXCEPT(++d);
+
+    ASSERT_SAME_TYPE(decltype(d.increment(ec)), directory_iterator&);
+    ASSERT_NOT_NOEXCEPT(d.increment(ec));
+}
+
+TEST_CASE(test_prefix_increment)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const std::set<path> dir_contents(static_env.DirIterationList.begin(),
+                                      static_env.DirIterationList.end());
+    const directory_iterator endIt{};
+
+    std::error_code ec;
+    directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        directory_iterator& it_ref = ++it;
+        TEST_CHECK(&it_ref == &it);
+    }
+
+    TEST_CHECK(it == endIt);
+}
+
+TEST_CASE(test_postfix_increment)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const std::set<path> dir_contents(static_env.DirIterationList.begin(),
+                                      static_env.DirIterationList.end());
+    const directory_iterator endIt{};
+
+    std::error_code ec;
+    directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        const path entry2 = *it++;
+        TEST_CHECK(entry2 == entry);
+    }
+
+    TEST_CHECK(it == endIt);
+}
+
+
+TEST_CASE(test_increment_method)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const std::set<path> dir_contents(static_env.DirIterationList.begin(),
+                                      static_env.DirIterationList.end());
+    const directory_iterator endIt{};
+
+    std::error_code ec;
+    directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        directory_iterator& it_ref = it.increment(ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(&it_ref == &it);
+    }
+
+    TEST_CHECK(it == endIt);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/move.pass.cpp
new file mode 100644
index 0000000..6ae6eed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/move.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator(directory_iterator&&) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_move_construct_tests)
+
+TEST_CASE(test_constructor_signature)
+{
+    using D = directory_iterator;
+    static_assert(std::is_nothrow_move_constructible<D>::value, "");
+}
+
+TEST_CASE(test_move_end_iterator)
+{
+    const directory_iterator endIt;
+    directory_iterator endIt2{};
+
+    directory_iterator it(std::move(endIt2));
+    TEST_CHECK(it == endIt);
+    TEST_CHECK(endIt2 == endIt);
+}
+
+TEST_CASE(test_move_valid_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const directory_iterator endIt{};
+
+    directory_iterator it(testDir);
+    TEST_REQUIRE(it != endIt);
+    const path entry = *it;
+
+    const directory_iterator it2(std::move(it));
+    TEST_CHECK(*it2 == entry);
+
+    TEST_CHECK(it == it2 || it == endIt);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/move_assign.pass.cpp
new file mode 100644
index 0000000..d0beee1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.members/move_assign.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator& operator=(directory_iterator const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+// The filesystem specification explicitly allows for self-move on
+// the directory iterators. Turn off this warning so we can test it.
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wself-move")
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_move_assign_tests)
+
+TEST_CASE(test_assignment_signature)
+{
+    using D = directory_iterator;
+    static_assert(std::is_nothrow_move_assignable<D>::value, "");
+}
+
+TEST_CASE(test_move_to_end_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+
+    directory_iterator from(testDir);
+    TEST_REQUIRE(from != directory_iterator{});
+    const path entry = *from;
+
+    directory_iterator to{};
+    to = std::move(from);
+    TEST_REQUIRE(to != directory_iterator{});
+    TEST_CHECK(*to == entry);
+}
+
+
+TEST_CASE(test_move_from_end_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+
+    directory_iterator from{};
+
+    directory_iterator to(testDir);
+    TEST_REQUIRE(to != from);
+
+    to = std::move(from);
+    TEST_REQUIRE(to == directory_iterator{});
+    TEST_REQUIRE(from == directory_iterator{});
+}
+
+TEST_CASE(test_move_valid_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const directory_iterator endIt{};
+
+    directory_iterator it(testDir);
+    TEST_REQUIRE(it != endIt);
+    ++it;
+    TEST_REQUIRE(it != endIt);
+    const path entry = *it;
+
+    directory_iterator it2(testDir);
+    TEST_REQUIRE(it2 != it);
+    const path entry2 = *it2;
+    TEST_CHECK(entry2 != entry);
+
+    it2 = std::move(it);
+    TEST_REQUIRE(it2 != directory_iterator{});
+    TEST_CHECK(*it2 == entry);
+}
+
+TEST_CASE(test_returns_reference_to_self)
+{
+    directory_iterator it;
+    directory_iterator it2;
+    directory_iterator& ref = (it2 = it);
+    TEST_CHECK(&ref == &it2);
+}
+
+
+TEST_CASE(test_self_move)
+{
+    static_test_env static_env;
+    // Create two non-equal iterators that have exactly the same state.
+    directory_iterator it(static_env.Dir);
+    directory_iterator it2(static_env.Dir);
+    ++it; ++it2;
+    TEST_CHECK(it != it2);
+    TEST_CHECK(*it2 == *it);
+
+    it = std::move(it);
+    TEST_CHECK(*it2 == *it);
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.nonmembers/begin_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.nonmembers/begin_end.pass.cpp
new file mode 100644
index 0000000..f6f0bbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/directory_iterator.nonmembers/begin_end.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// directory_iterator begin(directory_iterator iter) noexcept;
+// directory_iterator end(directory_iterator iter) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(directory_iterator_begin_end_tests)
+
+TEST_CASE(test_function_signatures)
+{
+    directory_iterator d;
+
+    ASSERT_SAME_TYPE(decltype(begin(d)), directory_iterator);
+    ASSERT_SAME_TYPE(decltype(begin(std::move(d))), directory_iterator);
+    ASSERT_NOEXCEPT(begin(d));
+    ASSERT_NOEXCEPT(begin(std::move(d)));
+
+    ASSERT_SAME_TYPE(decltype(end(d)), directory_iterator);
+    ASSERT_SAME_TYPE(decltype(end(std::move(d))), directory_iterator);
+    ASSERT_NOEXCEPT(end(d));
+    ASSERT_NOEXCEPT(end(std::move(d)));
+}
+
+TEST_CASE(test_ranged_for_loop)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    std::set<path> dir_contents(static_env.DirIterationList.begin(),
+                                static_env.DirIterationList.end());
+
+    std::error_code ec;
+    directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    for (auto& elem : it) {
+        TEST_CHECK(dir_contents.erase(elem) == 1);
+    }
+    TEST_CHECK(dir_contents.empty());
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..d76e138
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// directory_iterator, recursive_directory_iterator
+
+#include "filesystem_include.h"
+
+#include <iterator>
+
+using value_type = fs::directory_entry;
+
+static_assert(std::input_iterator<fs::directory_iterator>);
+static_assert(!std::forward_iterator<fs::directory_iterator>);
+static_assert(!std::indirectly_writable<fs::directory_iterator, value_type>);
+static_assert(!std::incrementable<fs::directory_iterator>);
+static_assert(std::sentinel_for<fs::directory_iterator, fs::directory_iterator>);
+static_assert(!std::sized_sentinel_for<fs::directory_iterator, fs::directory_iterator>);
+static_assert(!std::indirectly_movable<fs::directory_iterator, fs::directory_iterator>);
+static_assert(!std::indirectly_movable_storable<fs::directory_iterator, fs::directory_iterator>);
+static_assert(!std::indirectly_copyable<fs::directory_iterator, fs::directory_iterator>);
+static_assert(!std::indirectly_copyable_storable<fs::directory_iterator, fs::directory_iterator>);
+static_assert(!std::indirectly_swappable<fs::directory_iterator, fs::directory_iterator>);
+
+static_assert(std::input_iterator<fs::recursive_directory_iterator>);
+static_assert(!std::forward_iterator<fs::recursive_directory_iterator>);
+static_assert(!std::indirectly_writable<fs::recursive_directory_iterator, value_type>);
+static_assert(!std::incrementable<fs::recursive_directory_iterator>);
+static_assert(std::sentinel_for<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
+static_assert(!std::sized_sentinel_for<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
+static_assert(!std::indirectly_movable<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
+static_assert(!std::indirectly_movable_storable<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
+static_assert(!std::indirectly_copyable<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
+static_assert(!std::indirectly_copyable_storable<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
+static_assert(!std::indirectly_swappable<fs::recursive_directory_iterator, fs::recursive_directory_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..4529d87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// directory_iterator
+
+#include "filesystem_include.h"
+
+#include <concepts>
+#include <ranges>
+
+static_assert(std::same_as<std::ranges::iterator_t<fs::directory_iterator>, fs::directory_iterator>);
+static_assert(std::ranges::common_range<fs::directory_iterator>);
+static_assert(std::ranges::input_range<fs::directory_iterator>);
+static_assert(std::ranges::view<fs::directory_iterator>);
+static_assert(!std::ranges::sized_range<fs::directory_iterator>);
+static_assert(std::ranges::borrowed_range<fs::directory_iterator>);
+static_assert(std::ranges::viewable_range<fs::directory_iterator>);
+
+static_assert(std::same_as<std::ranges::iterator_t<fs::directory_iterator&>, fs::directory_iterator>);
+static_assert(std::ranges::common_range<fs::directory_iterator&>);
+static_assert(std::ranges::input_range<fs::directory_iterator&>);
+static_assert(!std::ranges::view<fs::directory_iterator&>);
+static_assert(!std::ranges::sized_range<fs::directory_iterator&>);
+static_assert(std::ranges::borrowed_range<fs::directory_iterator&>);
+static_assert(std::ranges::viewable_range<fs::directory_iterator&>);
+
+static_assert(std::same_as<std::ranges::iterator_t<const fs::directory_iterator&>, fs::directory_iterator>);
+static_assert(std::ranges::common_range<const fs::directory_iterator&>);
+static_assert(std::ranges::input_range<const fs::directory_iterator&>);
+static_assert(!std::ranges::view<const fs::directory_iterator&>);
+static_assert(!std::ranges::sized_range<const fs::directory_iterator&>);
+static_assert(std::ranges::borrowed_range<const fs::directory_iterator&>);
+static_assert(std::ranges::viewable_range<const fs::directory_iterator&>);
+
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/types.pass.cpp
new file mode 100644
index 0000000..403d1ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.directory_iterator/types.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+// typedef ... value_type;
+// typedef ... difference_type;
+// typedef ... pointer;
+// typedef ... reference;
+// typedef ... iterator_category
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+    using namespace fs;
+    using D = directory_iterator;
+    ASSERT_SAME_TYPE(D::value_type, directory_entry);
+    ASSERT_SAME_TYPE(D::difference_type, std::ptrdiff_t);
+    ASSERT_SAME_TYPE(D::pointer, const directory_entry*);
+    ASSERT_SAME_TYPE(D::reference, const directory_entry&);
+    ASSERT_SAME_TYPE(D::iterator_category, std::input_iterator_tag);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.cons.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.cons.pass.cpp
new file mode 100644
index 0000000..dbb5926
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.cons.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class file_status
+
+// explicit file_status() noexcept;
+// explicit file_status(file_type, perms prms = perms::unknown) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_convertible.h"
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+ using namespace fs;
+  // Default ctor
+  {
+    static_assert(std::is_nothrow_default_constructible<file_status>::value,
+                  "The default constructor must be noexcept");
+    static_assert(test_convertible<file_status>(),
+                  "The default constructor must not be explicit");
+    const file_status f;
+    assert(f.type()  == file_type::none);
+    assert(f.permissions() == perms::unknown);
+  }
+
+  // Unary ctor
+  {
+    static_assert(std::is_nothrow_constructible<file_status, file_type>::value,
+                  "This constructor must be noexcept");
+    static_assert(!test_convertible<file_status, file_type>(),
+                 "This constructor must be explicit");
+
+    const file_status f(file_type::not_found);
+    assert(f.type()  == file_type::not_found);
+    assert(f.permissions() == perms::unknown);
+  }
+  // Binary ctor
+  {
+    static_assert(std::is_nothrow_constructible<file_status, file_type, perms>::value,
+                  "This constructor must be noexcept");
+    static_assert(!test_convertible<file_status, file_type, perms>(),
+                  "This constructor must b explicit");
+    const file_status f(file_type::regular, perms::owner_read);
+    assert(f.type()  == file_type::regular);
+    assert(f.permissions() == perms::owner_read);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.mods.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.mods.pass.cpp
new file mode 100644
index 0000000..c10c758
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.mods.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class file_status
+
+// void type(file_type) noexcept;
+// void permissions(perms) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+
+  file_status st;
+
+  // type test
+  {
+    static_assert(noexcept(st.type(file_type::regular)),
+                  "operation must be noexcept");
+    static_assert(std::is_same<decltype(st.type(file_type::regular)), void>::value,
+                 "operation must return void");
+    assert(st.type() != file_type::regular);
+    st.type(file_type::regular);
+    assert(st.type() == file_type::regular);
+  }
+  // permissions test
+  {
+    static_assert(noexcept(st.permissions(perms::owner_read)),
+                  "operation must be noexcept");
+    static_assert(std::is_same<decltype(st.permissions(perms::owner_read)), void>::value,
+                 "operation must return void");
+    assert(st.permissions() != perms::owner_read);
+    st.permissions(perms::owner_read);
+    assert(st.permissions() == perms::owner_read);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.obs.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.obs.pass.cpp
new file mode 100644
index 0000000..ac36459
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.file_status/file_status.obs.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class file_status
+
+// file_type type() const noexcept;
+// perms permissions(p) const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+
+  const file_status st(file_type::regular, perms::owner_read);
+
+  // type test
+  {
+    static_assert(noexcept(st.type()),
+                  "operation must be noexcept");
+    static_assert(std::is_same<decltype(st.type()), file_type>::value,
+                 "operation must return file_type");
+    assert(st.type() == file_type::regular);
+  }
+  // permissions test
+  {
+    static_assert(noexcept(st.permissions()),
+                  "operation must be noexcept");
+    static_assert(std::is_same<decltype(st.permissions()), perms>::value,
+                 "operation must return perms");
+    assert(st.permissions() == perms::owner_read);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.filesystem_error/filesystem_error.members.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.filesystem_error/filesystem_error.members.pass.cpp
new file mode 100644
index 0000000..8fd23b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.filesystem_error/filesystem_error.members.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class filesystem_error
+
+// filesystem_error(const string& what_arg, error_code ec);
+// filesystem_error(const string& what_arg, const path& p1, error_code ec);
+// filesystem_error(const string& what_arg, const path& p1, const path& p2, error_code ec);
+// const std::error_code& code() const;
+// const char* what() const noexcept;
+// const path& path1() const noexcept;
+// const path& path2() const noexcept;
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <string>
+#include <system_error>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+void test_constructors() {
+  using namespace fs;
+
+  // The string returned by "filesystem_error::what() must contain runtime_error::what()
+  const std::string what_arg = "Hello World";
+  const std::string what_contains = std::runtime_error(what_arg).what();
+  assert(what_contains.find(what_arg) != std::string::npos);
+  auto CheckWhat = [what_contains](filesystem_error const& e) {
+    std::string s = e.what();
+    assert(s.find(what_contains) != std::string::npos);
+  };
+
+  std::error_code ec = std::make_error_code(std::errc::file_exists);
+  const path p1("foo");
+  const path p2("bar");
+
+  // filesystem_error(const string& what_arg, error_code ec);
+  {
+    ASSERT_NOT_NOEXCEPT(filesystem_error(what_arg, ec));
+    filesystem_error e(what_arg, ec);
+    CheckWhat(e);
+    assert(e.code() == ec);
+    assert(e.path1().empty() && e.path2().empty());
+  }
+  // filesystem_error(const string& what_arg, const path&, error_code ec);
+  {
+    ASSERT_NOT_NOEXCEPT(filesystem_error(what_arg, p1, ec));
+    filesystem_error e(what_arg, p1, ec);
+    CheckWhat(e);
+    assert(e.code() == ec);
+    assert(e.path1() == p1);
+    assert(e.path2().empty());
+  }
+  // filesystem_error(const string& what_arg, const path&, const path&, error_code ec);
+  {
+    ASSERT_NOT_NOEXCEPT(filesystem_error(what_arg, p1, p2, ec));
+    filesystem_error e(what_arg, p1, p2, ec);
+    CheckWhat(e);
+    assert(e.code() == ec);
+    assert(e.path1() == p1);
+    assert(e.path2() == p2);
+  }
+}
+
+void test_signatures()
+{
+  using namespace fs;
+  const path p;
+  std::error_code ec;
+  const filesystem_error e("lala", ec);
+  // const path& path1() const noexcept;
+  {
+    ASSERT_SAME_TYPE(path const&, decltype(e.path1()));
+    ASSERT_NOEXCEPT(e.path1());
+  }
+  // const path& path2() const noexcept
+  {
+    ASSERT_SAME_TYPE(path const&, decltype(e.path2()));
+    ASSERT_NOEXCEPT(e.path2());
+  }
+  // const char* what() const noexcept
+  {
+    ASSERT_SAME_TYPE(const char*, decltype(e.what()));
+    ASSERT_NOEXCEPT(e.what());
+  }
+}
+
+int main(int, char**) {
+  static_assert(std::is_base_of<std::system_error, fs::filesystem_error>::value, "");
+  test_constructors();
+  test_signatures();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp
new file mode 100644
index 0000000..cff339a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.itr/iterator.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// template <class Source>
+//      path(const Source& source);
+// template <class InputIterator>
+//      path(InputIterator first, InputIterator last);
+
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "filesystem_test_helper.h"
+
+void checkIteratorConcepts() {
+  using namespace fs;
+  using It = path::iterator;
+  using Traits = std::iterator_traits<It>;
+  ASSERT_SAME_TYPE(path::const_iterator, It);
+#if TEST_STD_VER > 17
+  static_assert(std::bidirectional_iterator<It>);
+#endif
+  ASSERT_SAME_TYPE(Traits::value_type, path);
+  LIBCPP_STATIC_ASSERT(std::is_same<Traits::iterator_category, std::input_iterator_tag>::value, "");
+  LIBCPP_STATIC_ASSERT(std::is_same<Traits::pointer, path const*>::value, "");
+  LIBCPP_STATIC_ASSERT(std::is_same<Traits::reference, path>::value, "");
+  {
+    It it;
+    ASSERT_SAME_TYPE(It&, decltype(++it));
+    ASSERT_SAME_TYPE(It, decltype(it++));
+    ASSERT_SAME_TYPE(It&, decltype(--it));
+    ASSERT_SAME_TYPE(It, decltype(it--));
+    ASSERT_SAME_TYPE(Traits::reference, decltype(*it));
+    ASSERT_SAME_TYPE(Traits::pointer, decltype(it.operator->()));
+#ifdef _WIN32
+    ASSERT_SAME_TYPE(std::wstring const&, decltype(it->native()));
+#else
+    ASSERT_SAME_TYPE(std::string const&, decltype(it->native()));
+#endif
+    ASSERT_SAME_TYPE(bool, decltype(it == it));
+    ASSERT_SAME_TYPE(bool, decltype(it != it));
+  }
+  {
+    path const p;
+    ASSERT_SAME_TYPE(It, decltype(p.begin()));
+    ASSERT_SAME_TYPE(It, decltype(p.end()));
+    assert(p.begin() == p.end());
+  }
+}
+
+void checkBeginEndBasic() {
+  using namespace fs;
+  using It = path::iterator;
+  {
+    path const p;
+    ASSERT_SAME_TYPE(It, decltype(p.begin()));
+    ASSERT_SAME_TYPE(It, decltype(p.end()));
+    assert(p.begin() == p.end());
+  }
+  {
+    path const p("foo");
+    It default_constructed;
+    default_constructed = p.begin();
+    assert(default_constructed == p.begin());
+    assert(default_constructed != p.end());
+    default_constructed = p.end();
+    assert(default_constructed == p.end());
+    assert(default_constructed != p.begin());
+  }
+  {
+    path p("//root_name//first_dir////second_dir");
+#ifdef _WIN32
+    const path expect[] = {"//root_name", "/", "first_dir", "second_dir"};
+#else
+    const path expect[] = {"/", "root_name", "first_dir", "second_dir"};
+#endif
+    assert(checkCollectionsEqual(p.begin(), p.end(), std::begin(expect), std::end(expect)));
+    assert(checkCollectionsEqualBackwards(p.begin(), p.end(), std::begin(expect), std::end(expect)));
+  }
+  {
+    path p("////foo/bar/baz///");
+    const path expect[] = {"/", "foo", "bar", "baz", ""};
+    assert(checkCollectionsEqual(p.begin(), p.end(), std::begin(expect), std::end(expect)));
+    assert(checkCollectionsEqualBackwards(p.begin(), p.end(), std::begin(expect), std::end(expect)));
+  }
+}
+
+int main(int, char**) {
+  using namespace fs;
+  checkIteratorConcepts();
+  checkBeginEndBasic(); // See path.decompose.pass.cpp for more tests.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.append.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.append.pass.cpp
new file mode 100644
index 0000000..afbad4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.append.pass.cpp
@@ -0,0 +1,405 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// path& operator/=(path const&)
+// template <class Source>
+//      path& operator/=(Source const&);
+// template <class Source>
+//      path& append(Source const&);
+// template <class InputIterator>
+//      path& append(InputIterator first, InputIterator last);
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <string_view>
+#include <cassert>
+
+// On Windows, the append function converts all inputs (pointers, iterators)
+// to an intermediate path object, causing allocations in cases where no
+// allocations are done on other platforms.
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+struct AppendOperatorTestcase {
+  MultiStringType lhs;
+  MultiStringType rhs;
+  MultiStringType expect_posix;
+  MultiStringType expect_windows;
+
+  MultiStringType const& expected_result() const {
+#ifdef _WIN32
+    return expect_windows;
+#else
+    return expect_posix;
+#endif
+  }
+};
+
+#define S(Str) MKSTR(Str)
+const AppendOperatorTestcase Cases[] =
+    {
+        {S(""),        S(""),         S(""),              S("")}
+      , {S("p1"),      S("p2"),       S("p1/p2"),         S("p1\\p2")}
+      , {S("p1/"),     S("p2"),       S("p1/p2"),         S("p1/p2")}
+      , {S("p1"),      S("/p2"),      S("/p2"),           S("/p2")}
+      , {S("p1/"),     S("/p2"),      S("/p2"),           S("/p2")}
+      , {S("p1"),      S("\\p2"),     S("p1/\\p2"),       S("\\p2")}
+      , {S("p1\\"),    S("p2"),       S("p1\\/p2"),       S("p1\\p2")}
+      , {S("p1\\"),    S("\\p2"),     S("p1\\/\\p2"),     S("\\p2")}
+      , {S(""),        S("p2"),       S("p2"),            S("p2")}
+      , {S("/p1"),     S("p2"),       S("/p1/p2"),        S("/p1\\p2")}
+      , {S("/p1"),     S("/p2"),      S("/p2"),           S("/p2")}
+      , {S("/p1/p3"),  S("p2"),       S("/p1/p3/p2"),     S("/p1/p3\\p2")}
+      , {S("/p1/p3/"), S("p2"),       S("/p1/p3/p2"),     S("/p1/p3/p2")}
+      , {S("/p1/"),    S("p2"),       S("/p1/p2"),        S("/p1/p2")}
+      , {S("/p1/p3/"), S("/p2/p4"),   S("/p2/p4"),        S("/p2/p4")}
+      , {S("/"),       S(""),         S("/"),             S("/")}
+      , {S("/p1"),     S("/p2/"),     S("/p2/"),          S("/p2/")}
+      , {S("p1"),      S(""),         S("p1/"),           S("p1\\")}
+      , {S("p1/"),     S(""),         S("p1/"),           S("p1/")}
+
+      , {S("//host"),  S("foo"),      S("//host/foo"),    S("//host\\foo")}
+      , {S("//host/"), S("foo"),      S("//host/foo"),    S("//host/foo")}
+      , {S("//host"),  S(""),         S("//host/"),       S("//host\\")}
+
+      , {S("foo"),     S("C:/bar"),   S("foo/C:/bar"),    S("C:/bar")}
+      , {S("foo"),     S("C:"),       S("foo/C:"),        S("C:")}
+
+      , {S("C:"),      S(""),         S("C:/"),           S("C:")}
+      , {S("C:foo"),   S("/bar"),     S("/bar"),          S("C:/bar")}
+      , {S("C:foo"),   S("bar"),      S("C:foo/bar"),     S("C:foo\\bar")}
+      , {S("C:/foo"),  S("bar"),      S("C:/foo/bar"),    S("C:/foo\\bar")}
+      , {S("C:/foo"),  S("/bar"),     S("/bar"),          S("C:/bar")}
+
+      , {S("C:foo"),   S("C:/bar"),   S("C:foo/C:/bar"),  S("C:/bar")}
+      , {S("C:foo"),   S("C:bar"),    S("C:foo/C:bar"),   S("C:foo\\bar")}
+      , {S("C:/foo"),  S("C:/bar"),   S("C:/foo/C:/bar"), S("C:/bar")}
+      , {S("C:/foo"),  S("C:bar"),    S("C:/foo/C:bar"),  S("C:/foo\\bar")}
+
+      , {S("C:foo"),   S("c:/bar"),   S("C:foo/c:/bar"),  S("c:/bar")}
+      , {S("C:foo"),   S("c:bar"),    S("C:foo/c:bar"),   S("c:bar")}
+      , {S("C:/foo"),  S("c:/bar"),   S("C:/foo/c:/bar"), S("c:/bar")}
+      , {S("C:/foo"),  S("c:bar"),    S("C:/foo/c:bar"),  S("c:bar")}
+
+      , {S("C:/foo"),  S("D:bar"),    S("C:/foo/D:bar"),  S("D:bar")}
+    };
+
+
+const AppendOperatorTestcase LongLHSCases[] =
+    {
+        {S("p1"),   S("p2"),    S("p1/p2"),  S("p1\\p2")}
+      , {S("p1/"),  S("p2"),    S("p1/p2"),  S("p1/p2")}
+      , {S("p1"),   S("/p2"),   S("/p2"),    S("/p2")}
+      , {S("/p1"),  S("p2"),    S("/p1/p2"), S("/p1\\p2")}
+    };
+#undef S
+
+
+// The append operator may need to allocate a temporary buffer before a code_cvt
+// conversion. Test if this allocation occurs by:
+//   1. Create a path, `LHS`, and reserve enough space to append `RHS`.
+//      This prevents `LHS` from allocating during the actual appending.
+//   2. Create a `Source` object `RHS`, which represents a "large" string.
+//      (The string must not trigger the SSO)
+//   3. Append `RHS` to `LHS` and check for the expected allocation behavior.
+template <class CharT>
+void doAppendSourceAllocTest(AppendOperatorTestcase const& TC)
+{
+  using namespace fs;
+  using Ptr = CharT const*;
+  using Str = std::basic_string<CharT>;
+  using StrView = std::basic_string_view<CharT>;
+  using InputIter = cpp17_input_iterator<Ptr>;
+
+  const Ptr L = TC.lhs;
+  Str RShort = (Ptr)TC.rhs;
+  Str EShort = (Ptr)TC.expected_result();
+  assert(RShort.size() >= 2);
+  CharT c = RShort.back();
+  RShort.append(100, c);
+  EShort.append(100, c);
+  const Ptr R = RShort.data();
+  const Str& E = EShort;
+  std::size_t ReserveSize = E.size() + 3;
+  // basic_string
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    Str  RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS /= RHS;
+    }
+    assert(PathEq(LHS, E));
+  }
+  // basic_string_view
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    StrView  RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS /= RHS;
+    }
+    assert(PathEq(LHS, E));
+  }
+  // CharT*
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    Ptr RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS /= RHS;
+    }
+    assert(PathEq(LHS, E));
+  }
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    Ptr RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS.append(RHS, StrEnd(RHS));
+    }
+    assert(PathEq(LHS, E));
+  }
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    path RHS(R);
+    {
+      DisableAllocationGuard g;
+      LHS /= RHS;
+    }
+    assert(PathEq(LHS, E));
+  }
+  // input iterator - For non-native char types, appends needs to copy the
+  // iterator range into a contiguous block of memory before it can perform the
+  // code_cvt conversions.
+  // For "char" no allocations will be performed because no conversion is
+  // required.
+  // On Windows, the append method is more complex and uses intermediate
+  // path objects, which causes extra allocations. This is checked by comparing
+  // path::value_type with "char" - on Windows, it's wchar_t.
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS
+  // Only check allocations if we can pick up allocations done within the
+  // library implementation.
+  bool ExpectNoAllocations = std::is_same<CharT, char>::value &&
+                             std::is_same<path::value_type, char>::value;
+#endif
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    InputIter RHS(R);
+    {
+      RequireAllocationGuard g(0); // require "at least zero" allocations by default
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS
+      if (ExpectNoAllocations)
+        g.requireExactly(0);
+#endif
+      LHS /= RHS;
+    }
+    assert(PathEq(LHS, E));
+  }
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    InputIter RHS(R);
+    InputIter REnd(StrEnd(R));
+    {
+      RequireAllocationGuard g(0); // require "at least zero" allocations by default
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS
+      if (ExpectNoAllocations)
+        g.requireExactly(0);
+#endif
+      LHS.append(RHS, REnd);
+    }
+    assert(PathEq(LHS, E));
+  }
+}
+
+template <class CharT>
+void doAppendSourceTest(AppendOperatorTestcase const& TC)
+{
+  using namespace fs;
+  using Ptr = CharT const*;
+  using Str = std::basic_string<CharT>;
+  using StrView = std::basic_string_view<CharT>;
+  using InputIter = cpp17_input_iterator<Ptr>;
+  const Ptr L = TC.lhs;
+  const Ptr R = TC.rhs;
+  const Ptr E = TC.expected_result();
+  // basic_string
+  {
+    path Result(L);
+    Str RHS(R);
+    path& Ref = (Result /= RHS);
+    assert(Result == E);
+    assert(&Ref == &Result);
+  }
+  {
+    path LHS(L);
+    Str RHS(R);
+    path& Ref = LHS.append(RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  // basic_string_view
+  {
+    path LHS(L);
+    StrView RHS(R);
+    path& Ref = (LHS /= RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    StrView RHS(R);
+    path& Ref = LHS.append(RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  // Char*
+  {
+    path LHS(L);
+    Str RHS(R);
+    path& Ref = (LHS /= RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    Ptr RHS(R);
+    path& Ref = LHS.append(RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    Ptr RHS(R);
+    path& Ref = LHS.append(RHS, StrEnd(RHS));
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  // iterators
+  {
+    path LHS(L);
+    InputIter RHS(R);
+    path& Ref = (LHS /= RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L); InputIter RHS(R);
+    path& Ref = LHS.append(RHS);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    InputIter RHS(R);
+    InputIter REnd(StrEnd(R));
+    path& Ref = LHS.append(RHS, REnd);
+    assert(PathEq(LHS, E));
+    assert(&Ref == &LHS);
+  }
+}
+
+
+
+template <class It, class = decltype(fs::path{}.append(std::declval<It>()))>
+constexpr bool has_append(int) { return true; }
+template <class It>
+constexpr bool has_append(long) { return false; }
+
+template <class It, class = decltype(fs::path{}.operator/=(std::declval<It>()))>
+constexpr bool has_append_op(int) { return true; }
+template <class It>
+constexpr bool has_append_op(long) { return false; }
+
+template <class It>
+constexpr bool has_append() {
+  static_assert(has_append<It>(0) == has_append_op<It>(0), "must be same");
+  return has_append<It>(0) && has_append_op<It>(0);
+}
+
+void test_sfinae()
+{
+  using namespace fs;
+  {
+    using It = const char* const;
+    static_assert(has_append<It>(), "");
+  }
+  {
+    using It = cpp17_input_iterator<const char*>;
+    static_assert(has_append<It>(), "");
+  }
+  {
+    struct Traits {
+      using iterator_category = std::input_iterator_tag;
+      using value_type = const char;
+      using pointer = const char*;
+      using reference = const char&;
+      using difference_type = std::ptrdiff_t;
+    };
+    using It = cpp17_input_iterator<const char*, Traits>;
+    static_assert(has_append<It>(), "");
+  }
+  {
+    using It = cpp17_output_iterator<const char*>;
+    static_assert(!has_append<It>(), "");
+
+  }
+  {
+    static_assert(!has_append<int*>(), "");
+  }
+  {
+    static_assert(!has_append<char>(), "");
+    static_assert(!has_append<const char>(), "");
+  }
+}
+
+int main(int, char**)
+{
+  using namespace fs;
+  for (auto const & TC : Cases) {
+    {
+      const char* LHS_In = TC.lhs;
+      const char* RHS_In = TC.rhs;
+      path LHS(LHS_In);
+      path RHS(RHS_In);
+      path& Res = (LHS /= RHS);
+      assert(PathEq(Res, (const char*)TC.expected_result()));
+      assert(&Res == &LHS);
+    }
+    doAppendSourceTest<char>    (TC);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    doAppendSourceTest<wchar_t> (TC);
+#endif
+    doAppendSourceTest<char16_t>(TC);
+    doAppendSourceTest<char32_t>(TC);
+  }
+  for (auto const & TC : LongLHSCases) {
+    (void)TC;
+    LIBCPP_ONLY(doAppendSourceAllocTest<char>(TC));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    LIBCPP_ONLY(doAppendSourceAllocTest<wchar_t>(TC));
+#endif
+  }
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/copy.pass.cpp
new file mode 100644
index 0000000..9044b2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/copy.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path& operator=(path const&);
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+  static_assert(std::is_copy_assignable<path>::value, "");
+  static_assert(!std::is_nothrow_copy_assignable<path>::value, "should not be noexcept");
+  const std::string s("foo");
+  const path p(s);
+  path p2;
+  path& pref = (p2 = p);
+  assert(p.string() == s);
+  assert(p2.string() == s);
+  assert(&pref == &p2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/move.pass.cpp
new file mode 100644
index 0000000..95ac502
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/move.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path& operator=(path&&) noexcept
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+  static_assert(std::is_nothrow_move_assignable<path>::value, "");
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  const std::string s("we really really really really really really really "
+                      "really really long string so that we allocate");
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(
+      globalMemCounter.checkOutstandingNewEq(1));
+  const fs::path::string_type ps(s.begin(), s.end());
+  path p(s);
+  {
+    DisableAllocationGuard g;
+    path p2;
+    path& pref = (p2 = std::move(p));
+    assert(p2.native() == ps);
+    assert(p.native() != ps); // Testing moved from state
+    assert(&pref == &p2);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/source.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/source.pass.cpp
new file mode 100644
index 0000000..68c2442
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.assign/source.pass.cpp
@@ -0,0 +1,249 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// template <class Source>
+//      path& operator=(Source const&);
+//  path& operator=(string_type&&);
+// template <class Source>
+//      path& assign(Source const&);
+// template <class InputIterator>
+//      path& assign(InputIterator first, InputIterator last);
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <string_view>
+#include <cassert>
+
+// On Windows, charset conversions cause allocations in the path class in
+// cases where no allocations are done on other platforms.
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+template <class CharT>
+void RunTestCase(MultiStringType const& MS) {
+  using namespace fs;
+  const fs::path::value_type* Expect = MS;
+  const CharT* TestPath = MS;
+  const CharT* TestPathEnd = StrEnd(TestPath);
+  const std::size_t Size = TestPathEnd - TestPath;
+  const std::size_t SSize = StrEnd(Expect) - Expect;
+  assert(Size == SSize);
+  //////////////////////////////////////////////////////////////////////////////
+  // basic_string<Char, Traits, Alloc>
+  {
+    const std::basic_string<CharT> S(TestPath);
+    path p; PathReserve(p, S.length() + 1);
+    {
+      // string provides a contiguous iterator. No allocation needed.
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = (p = S);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+    assert(p.string<CharT>() == S);
+  }
+  {
+    const std::basic_string<CharT> S(TestPath);
+    path p; PathReserve(p, S.length() + 1);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = p.assign(S);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+    assert(p.string<CharT>() == S);
+  }
+  // basic_string<Char, Traits, Alloc>
+  {
+    const std::basic_string_view<CharT> S(TestPath);
+    path p; PathReserve(p, S.length() + 1);
+    {
+      // string provides a contiguous iterator. No allocation needed.
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = (p = S);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+    assert(p.string<CharT>() == S);
+  }
+  {
+    const std::basic_string_view<CharT> S(TestPath);
+    path p; PathReserve(p, S.length() + 1);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = p.assign(S);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+    assert(p.string<CharT>() == S);
+  }
+  //////////////////////////////////////////////////////////////////////////////
+  // Char* pointers
+  {
+    path p; PathReserve(p, Size + 1);
+    {
+      // char* pointers are contiguous and can be used with code_cvt directly.
+      // no allocations needed.
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = (p = TestPath);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  {
+    path p; PathReserve(p, Size + 1);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = p.assign(TestPath);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  {
+    path p; PathReserve(p, Size + 1);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      path& pref = p.assign(TestPath, TestPathEnd);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  //////////////////////////////////////////////////////////////////////////////
+  // Iterators
+  {
+    using It = cpp17_input_iterator<const CharT*>;
+    path p; PathReserve(p, Size + 1);
+    It it(TestPath);
+    {
+      // Iterators cannot be used with code_cvt directly. This assignment
+      // may allocate if it's larger than a "short-string".
+      path& pref = (p = it);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  {
+    using It = cpp17_input_iterator<const CharT*>;
+    path p; PathReserve(p, Size + 1);
+    It it(TestPath);
+    {
+      path& pref = p.assign(it);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  {
+    using It = cpp17_input_iterator<const CharT*>;
+    path p; PathReserve(p, Size + 1);
+    It it(TestPath);
+    It e(TestPathEnd);
+    {
+      path& pref = p.assign(it, e);
+      assert(&pref == &p);
+    }
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+}
+
+template <class It, class = decltype(fs::path{}.assign(std::declval<It>()))>
+constexpr bool has_assign(int) { return true; }
+template <class It>
+constexpr bool has_assign(long) { return false; }
+template <class It>
+constexpr bool has_assign() { return has_assign<It>(0); }
+
+void test_sfinae() {
+  using namespace fs;
+  {
+    using It = const char* const;
+    static_assert(std::is_assignable<path, It>::value, "");
+    static_assert(has_assign<It>(), "");
+  }
+  {
+    using It = cpp17_input_iterator<const char*>;
+    static_assert(std::is_assignable<path, It>::value, "");
+    static_assert(has_assign<It>(), "");
+  }
+  {
+    struct Traits {
+      using iterator_category = std::input_iterator_tag;
+      using value_type = const char;
+      using pointer = const char*;
+      using reference = const char&;
+      using difference_type = std::ptrdiff_t;
+    };
+    using It = cpp17_input_iterator<const char*, Traits>;
+    static_assert(std::is_assignable<path, It>::value, "");
+    static_assert(has_assign<It>(), "");
+  }
+  {
+    using It = cpp17_output_iterator<const char*>;
+    static_assert(!std::is_assignable<path, It>::value, "");
+    static_assert(!has_assign<It>(), "");
+
+  }
+  {
+    static_assert(!std::is_assignable<path, int*>::value, "");
+    static_assert(!has_assign<int*>(), "");
+  }
+}
+
+void RunStringMoveTest(const fs::path::value_type* Expect) {
+  using namespace fs;
+  fs::path::string_type ss(Expect);
+  path p;
+  {
+    DisableAllocationGuard g; ((void)g);
+    path& pr = (p = std::move(ss));
+    assert(&pr == &p);
+  }
+  assert(p == Expect);
+  {
+    // Signature test
+    LIBCPP_ONLY(ASSERT_NOEXCEPT(p = std::move(ss)));
+  }
+}
+
+int main(int, char**) {
+  for (auto const& MS : PathList) {
+    RunTestCase<char>(MS);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    RunTestCase<wchar_t>(MS);
+#endif
+    RunTestCase<char16_t>(MS);
+    RunTestCase<char32_t>(MS);
+    RunStringMoveTest(MS);
+  }
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.charconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.charconv.pass.cpp
new file mode 100644
index 0000000..cf27cd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.charconv.pass.cpp
@@ -0,0 +1,411 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <filesystem>
+
+// class path
+
+// Test constructors, accessors and modifiers that convert from/to various
+// character encodings. Constructors and modifiers (append, concat,
+// operator/=, operator+=) accept inputs with various character encodings,
+// and accessors (*string(), string<>(), u8string()) export the string with
+// various encodings.
+//
+// Some encodings are standardized; char16_t, char32_t and the u8string
+// accessor and u8path constructor (and normal functions taking char8_t in
+// C++20) convert from/to UTF-16, UTF-32 and UTF-8. wchar_t can be either
+// UTF-16 or UTF-32 depending on the size of the wchar_t type, or can be
+// left unimplemented.
+//
+// Plain char is implicitly UTF-8 on posix systems. On Windows, plain char
+// is supposed to be in the same encoding as the platform's native file
+// system APIs consumes in the functions that take narrow strings as path
+// names.
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "filesystem_test_helper.h"
+
+// Test conversion with strings that fit within the latin1 charset, that fit
+// within one code point in UTF-16, and that can be expressible in certain
+// one-byte code pages.
+static void test_latin_unicode()
+{
+  const char16_t u16str[] = { 0xe5, 0xe4, 0xf6, 0x00 };
+  const char32_t u32str[] = { 0xe5, 0xe4, 0xf6, 0x00 };
+  const char str[] = { char(0xc3), char(0xa5), char(0xc3), char(0xa4), char(0xc3), char(0xb6), 0x00 }; // UTF8, in a regular char string
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+  const char8_t u8str[] = { 0xc3, 0xa5, 0xc3, 0xa4, 0xc3, 0xb6, 0x00 };
+#else
+  const char u8str[] = { char(0xc3), char(0xa5), char(0xc3), char(0xa4), char(0xc3), char(0xb6), 0x00 };
+#endif
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  const wchar_t wstr[] = { 0xe5, 0xe4, 0xf6, 0x00 };
+#endif
+
+  // Test well-defined conversion between UTF-8, UTF-16 and UTF-32
+  {
+    const fs::path p(u16str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+    assert(p.string<char16_t>() == u16str);
+    assert(p.string<char32_t>() == u32str);
+  }
+  {
+    const fs::path p(u32str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+    assert(p.string<char16_t>() == u16str);
+    assert(p.string<char32_t>() == u32str);
+  }
+  {
+    const fs::path p = fs::u8path(str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+    assert(p.string<char16_t>() == u16str);
+    assert(p.string<char32_t>() == u32str);
+  }
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+  {
+    // In C++20, the path constructor can unambiguously handle UTF-8 input,
+    // even if the plain char constructor would treat it as something else.
+    const fs::path p(u8str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+    assert(p.string<char8_t>() == u8str);
+    assert(p.string<char16_t>() == u16str);
+    assert(p.string<char32_t>() == u32str);
+  }
+  // Check reading various inputs with string<char8_t>()
+  {
+    const fs::path p(u16str);
+    assert(p.string<char8_t>() == u8str);
+  }
+  {
+    const fs::path p(u32str);
+    assert(p.string<char8_t>() == u8str);
+  }
+  {
+    const fs::path p = fs::u8path(str);
+    assert(p.string<char8_t>() == u8str);
+  }
+#endif
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  // Test conversion to/from wchar_t.
+  {
+    const fs::path p(u16str);
+    assert(p.wstring() == wstr);
+    assert(p.string<wchar_t>() == wstr);
+  }
+  {
+    const fs::path p = fs::u8path(str);
+    assert(p.wstring() == wstr);
+    assert(p.string<wchar_t>() == wstr);
+  }
+  {
+    const fs::path p(wstr);
+    assert(p.wstring() == wstr);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+    assert(p.string<wchar_t>() == wstr);
+  }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#ifndef _WIN32
+  // Test conversion to/from regular char-based string. On POSIX, this
+  // is implied to convert to/from UTF-8.
+  {
+    const fs::path p(str);
+    assert(p.string() == str);
+    assert(p.u16string() == u16str);
+    assert(p.string<char>() == str);
+  }
+  {
+    const fs::path p(u16str);
+    assert(p.string() == str);
+    assert(p.string<char>() == str);
+  }
+#else
+  // On windows, the narrow char-based input/output is supposed to be
+  // in the charset that narrow file IO APIs use. This can either be the
+  // current active code page (ACP) or the OEM code page, exposed by
+  // the AreFileApisANSI() function, and settable with SetFileApisToANSI() and
+  // SetFileApisToOEM(). We can't set which codepage is active within
+  // the process, but for some specific known ones, we can check if they
+  // behave as expected.
+  SetFileApisToANSI();
+  if (GetACP() == 1252) {
+    const char latin1[] = { char(0xe5), char(0xe4), char(0xf6), 0x00 };
+    {
+      const fs::path p(wstr);
+      assert(p.string() == latin1);
+      assert(p.string<char>() == latin1);
+    }
+    {
+      const fs::path p(latin1);
+      assert(p.string() == latin1);
+      assert(p.wstring() == wstr);
+      assert(p.u8string() == u8str);
+      assert(p.u16string() == u16str);
+      assert(p.string<char>() == latin1);
+      assert(p.string<wchar_t>() == wstr);
+    }
+  }
+  SetFileApisToOEM();
+  if (GetOEMCP() == 850 || GetOEMCP() == 437) {
+    // These chars are identical in both CP 850 and 437
+    const char cp850[] = { char(0x86), char(0x84), char(0x94), 0x00 };
+    {
+      const fs::path p(wstr);
+      assert(p.string() == cp850);
+      assert(p.string<char>() == cp850);
+    }
+    {
+      const fs::path p(cp850);
+      assert(p.string() == cp850);
+      assert(p.wstring() == wstr);
+      assert(p.u8string() == u8str);
+      assert(p.u16string() == u16str);
+      assert(p.string<char>() == cp850);
+      assert(p.string<wchar_t>() == wstr);
+    }
+  }
+#endif
+}
+
+// Test conversion with strings that don't fit within one UTF-16 code point.
+// Here, wchar_t can be either UTF-16 or UTF-32 depending on the size on the
+// particular platform.
+static void test_wide_unicode()
+{
+  const char16_t u16str[] = { 0xd801, 0xdc37, 0x00 };
+  const char32_t u32str[] = { 0x10437, 0x00 };
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+  const char8_t u8str[] = { 0xf0, 0x90, 0x90, 0xb7, 0x00 };
+#else
+  const char u8str[] = { char(0xf0), char(0x90), char(0x90), char(0xb7), 0x00 };
+#endif
+  const char str[] = { char(0xf0), char(0x90), char(0x90), char(0xb7), 0x00 };
+  {
+    const fs::path p = fs::u8path(str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+  }
+  {
+    const fs::path p(u16str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+  }
+  {
+    const fs::path p(u32str);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+  }
+#if !defined(TEST_HAS_NO_WIDE_CHARACTERS) && defined(__SIZEOF_WCHAR_T__)
+# if __SIZEOF_WCHAR_T__ == 2
+  const wchar_t wstr[] = { 0xd801, 0xdc37, 0x00 };
+# else
+  const wchar_t wstr[] = { 0x10437, 0x00 };
+# endif
+  // Test conversion to/from wchar_t.
+  {
+    const fs::path p = fs::u8path(str);
+    assert(p.wstring() == wstr);
+  }
+  {
+    const fs::path p(u16str);
+    assert(p.wstring() == wstr);
+  }
+  {
+    const fs::path p(u32str);
+    assert(p.wstring() == wstr);
+  }
+  {
+    const fs::path p(wstr);
+    assert(p.u8string() == u8str);
+    assert(p.u16string() == u16str);
+    assert(p.u32string() == u32str);
+    assert(p.wstring() == wstr);
+  }
+#endif // !defined(TEST_HAS_NO_WIDE_CHARACTERS) && defined(__SIZEOF_WCHAR_T__)
+}
+
+// Test appending paths in different encodings.
+static void test_append()
+{
+  const char16_t u16str[] = { 0xd801, 0xdc37, 0x00 };
+  const char32_t u32str[] = { 0x10437, 0x00 };
+  const char32_t u32ref[] = { 0x10437, fs::path::preferred_separator, 0x10437, fs::path::preferred_separator, 0x10437, 0x00 };
+  const char str[] = { char(0xf0), char(0x90), char(0x90), char(0xb7), 0x00 };
+  {
+    fs::path p = fs::u8path(str) / u16str / u32str;
+    assert(p.u32string() == u32ref);
+    p = fs::u8path(str).append(u16str).append(u32str);
+    assert(p.u32string() == u32ref);
+    p = fs::u8path(str);
+    p /= u16str;
+    p /= u32str;
+    assert(p.u32string() == u32ref);
+  }
+#if !defined(TEST_HAS_NO_WIDE_CHARACTERS) && defined(__SIZEOF_WCHAR_T__)
+# if __SIZEOF_WCHAR_T__ == 2
+  const wchar_t wstr[] = { 0xd801, 0xdc37, 0x00 };
+# else
+  const wchar_t wstr[] = { 0x10437, 0x00 };
+# endif
+  // Test conversion from wchar_t.
+  {
+    fs::path p = fs::path(u16str) / wstr / u32str;
+    assert(p.u32string() == u32ref);
+    p = fs::path(u16str).append(wstr).append(u32str);
+    assert(p.u32string() == u32ref);
+    p = fs::path(u16str);
+    p /= wstr;
+    p /= u32str;
+    assert(p.u32string() == u32ref);
+  }
+#endif // !defined(TEST_HAS_NO_WIDE_CHARACTERS) && defined(__SIZEOF_WCHAR_T__)
+}
+
+static void test_concat()
+{
+  const char16_t u16str[] = { 0xd801, 0xdc37, 0x00 };
+  const char32_t u32str[] = { 0x10437, 0x00 };
+  const char32_t u32ref[] = { 0x10437, 0x10437, 0x10437, 0x00 };
+  const char str[] = { char(0xf0), char(0x90), char(0x90), char(0xb7), 0x00 };
+  {
+    fs::path p = fs::u8path(str);
+    p += u16str;
+    p += u32str;
+    assert(p.u32string() == u32ref);
+    p = fs::u8path(str).concat(u16str).concat(u32str);
+    assert(p.u32string() == u32ref);
+  }
+#if !defined(TEST_HAS_NO_WIDE_CHARACTERS) && defined(__SIZEOF_WCHAR_T__)
+# if __SIZEOF_WCHAR_T__ == 2
+  const wchar_t wstr[] = { 0xd801, 0xdc37, 0x00 };
+# else
+  const wchar_t wstr[] = { 0x10437, 0x00 };
+# endif
+  // Test conversion from wchar_t.
+  {
+    fs::path p = fs::path(u16str);
+    p += wstr;
+    p += u32str;
+    assert(p.u32string() == u32ref);
+    p = fs::path(u16str).concat(wstr).concat(u32str);
+    assert(p.u32string() == u32ref);
+  }
+#endif // !defined(TEST_HAS_NO_WIDE_CHARACTERS) && defined(__SIZEOF_WCHAR_T__)
+}
+
+static void test_append_concat_narrow()
+{
+  const char16_t u16str[] = { 0xe5, 0x00 };
+  const char32_t u32ref_append[] = { 0xe5, fs::path::preferred_separator, 0xe5, 0x00 };
+  const char32_t u32ref_concat[] = { 0xe5, 0xe5, 0x00 };
+
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+  {
+    const char8_t u8str[] = { 0xc3, 0xa5, 0x00 };
+    // In C++20, appends of a char8_t string is unambiguously treated as
+    // UTF-8.
+    fs::path p = fs::path(u16str) / u8str;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).append(u8str);
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str);
+    p /= u8str;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).concat(u8str);
+    assert(p.u32string() == u32ref_concat);
+    p = fs::path(u16str);
+    p += u8str;
+    assert(p.u32string() == u32ref_concat);
+  }
+#endif
+#ifndef _WIN32
+  // Test appending a regular char-based string. On POSIX, this
+  // is implied to convert to/from UTF-8.
+  {
+    const char str[] = { char(0xc3), char(0xa5), 0x00 }; // UTF8, in a regular char string
+    fs::path p = fs::path(u16str) / str;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).append(str);
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str);
+    p /= str;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).concat(str);
+    assert(p.u32string() == u32ref_concat);
+    p = fs::path(u16str);
+    p += str;
+    assert(p.u32string() == u32ref_concat);
+  }
+#else
+  SetFileApisToANSI();
+  if (GetACP() == 1252) {
+    const char latin1[] = { char(0xe5), 0x00 };
+    fs::path p = fs::path(u16str) / latin1;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).append(latin1);
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str);
+    p /= latin1;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).concat(latin1);
+    assert(p.u32string() == u32ref_concat);
+    p = fs::path(u16str);
+    p += latin1;
+    assert(p.u32string() == u32ref_concat);
+  }
+  SetFileApisToOEM();
+  if (GetOEMCP() == 850 || GetOEMCP() == 437) {
+    // This chars is identical in both CP 850 and 437
+    const char cp850[] = { char(0x86), 0x00 };
+    fs::path p = fs::path(u16str) / cp850;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).append(cp850);
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str);
+    p /= cp850;
+    assert(p.u32string() == u32ref_append);
+    p = fs::path(u16str).concat(cp850);
+    assert(p.u32string() == u32ref_concat);
+    p = fs::path(u16str);
+    p += cp850;
+    assert(p.u32string() == u32ref_concat);
+  }
+#endif
+}
+
+int main(int, char**)
+{
+  test_latin_unicode();
+  test_wide_unicode();
+  test_append();
+  test_concat();
+  test_append_concat_narrow();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.compare.pass.cpp
new file mode 100644
index 0000000..3e194a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.compare.pass.cpp
@@ -0,0 +1,191 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// int compare(path const&) const noexcept;
+// int compare(string_type const&) const;
+// int compare(value_type const*) const;
+//
+// bool operator==(path const&, path const&) noexcept;
+// bool operator!=(path const&, path const&) noexcept;
+// bool operator< (path const&, path const&) noexcept;
+// bool operator<=(path const&, path const&) noexcept;
+// bool operator> (path const&, path const&) noexcept;
+// bool operator>=(path const&, path const&) noexcept;
+// strong_ordering operator<=>(path const&, path const&) noexcept;
+//
+// size_t hash_value(path const&) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+struct PathCompareTest {
+  const char* LHS;
+  const char* RHS;
+  int expect;
+};
+
+#define LONGA "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+#define LONGB "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"
+#define LONGC "CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"
+#define LONGD "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"
+const PathCompareTest CompareTestCases[] =
+{
+    {"", "",  0},
+    {"a", "", 1},
+    {"", "a", -1},
+    {"a/b/c", "a/b/c", 0},
+    {"b/a/c", "a/b/c", 1},
+    {"a/b/c", "b/a/c", -1},
+    {"a/b", "a/b/c", -1},
+    {"a/b/c", "a/b", 1},
+    {"a/b/", "a/b/.", -1},
+    {"a/b/", "a/b",    1},
+    {"a/b//////", "a/b/////.", -1},
+    {"a/.././b", "a///..//.////b", 0},
+    {"//foo//bar///baz////", "//foo/bar/baz/", 0}, // duplicate separators
+    {"///foo/bar", "/foo/bar", 0}, // "///" is not a root directory
+    {"/foo/bar/", "/foo/bar", 1}, // trailing separator
+    {"foo", "/foo", -1}, // if !this->has_root_directory() and p.has_root_directory(), a value less than 0.
+    {"/foo", "foo", 1}, //  if this->has_root_directory() and !p.has_root_directory(), a value greater than 0.
+    {("//" LONGA "////" LONGB "/" LONGC "///" LONGD), ("//" LONGA "/" LONGB "/" LONGC "/" LONGD), 0},
+    {(LONGA "/" LONGB "/" LONGC), (LONGA "/" LONGB "/" LONGB), 1}
+
+};
+#undef LONGA
+#undef LONGB
+#undef LONGC
+#undef LONGD
+
+static inline int normalize_ret(int ret)
+{
+  return ret < 0 ? -1 : (ret > 0 ? 1 : 0);
+}
+
+void test_compare_basic()
+{
+  using namespace fs;
+  for (auto const & TC : CompareTestCases) {
+    const path p1(TC.LHS);
+    const path p2(TC.RHS);
+    std::string RHS(TC.RHS);
+    const path::string_type R(RHS.begin(), RHS.end());
+    const std::basic_string_view<path::value_type> RV(R);
+    const path::value_type *Ptr = R.c_str();
+    const int E = TC.expect;
+    { // compare(...) functions
+      DisableAllocationGuard g; // none of these operations should allocate
+
+      // check runtime results
+      int ret1 = normalize_ret(p1.compare(p2));
+      int ret2 = normalize_ret(p1.compare(R));
+      int ret3 = normalize_ret(p1.compare(Ptr));
+      int ret4 = normalize_ret(p1.compare(RV));
+
+      g.release();
+      assert(ret1 == ret2);
+      assert(ret1 == ret3);
+      assert(ret1 == ret4);
+      assert(ret1 == E);
+
+      // check signatures
+      ASSERT_NOEXCEPT(p1.compare(p2));
+    }
+    { // comparison operators
+      DisableAllocationGuard g; // none of these operations should allocate
+
+      // check signatures
+      AssertComparisonsAreNoexcept<path>();
+      AssertComparisonsReturnBool<path>();
+#if TEST_STD_VER > 17
+      AssertOrderAreNoexcept<path>();
+      AssertOrderReturn<std::strong_ordering, path>();
+#endif
+
+      // check comarison results
+      assert(testComparisons(p1, p2, /*isEqual*/ E == 0, /*isLess*/ E < 0));
+#if TEST_STD_VER > 17
+      assert(testOrder(p1, p2, E <=> 0));
+#endif
+    }
+    { // check hash values
+      auto h1 = hash_value(p1);
+      auto h2 = hash_value(p2);
+      assert((h1 == h2) == (p1 == p2));
+      // check signature
+      ASSERT_SAME_TYPE(size_t, decltype(hash_value(p1)));
+      ASSERT_NOEXCEPT(hash_value(p1));
+    }
+  }
+}
+
+int CompareElements(std::vector<std::string> const& LHS, std::vector<std::string> const& RHS) {
+  bool IsLess = std::lexicographical_compare(LHS.begin(), LHS.end(), RHS.begin(), RHS.end());
+  if (IsLess)
+    return -1;
+
+  bool IsGreater = std::lexicographical_compare(RHS.begin(), RHS.end(), LHS.begin(), LHS.end());
+  if (IsGreater)
+    return 1;
+
+  return 0;
+}
+
+void test_compare_elements() {
+  struct {
+    std::vector<std::string> LHSElements;
+    std::vector<std::string> RHSElements;
+    int Expect;
+  } TestCases[] = {
+      {{"a"}, {"a"}, 0},
+      {{"a"}, {"b"}, -1},
+      {{"b"}, {"a"}, 1},
+      {{"a", "b", "c"}, {"a", "b", "c"}, 0},
+      {{"a", "b", "c"}, {"a", "b", "d"}, -1},
+      {{"a", "b", "d"}, {"a", "b", "c"}, 1},
+      {{"a", "b"}, {"a", "b", "c"}, -1},
+      {{"a", "b", "c"}, {"a", "b"}, 1},
+
+  };
+
+  auto BuildPath = [](std::vector<std::string> const& Elems) {
+    fs::path p;
+    for (auto &E : Elems)
+      p /= E;
+    return p;
+  };
+
+  for (auto &TC : TestCases) {
+    fs::path LHS = BuildPath(TC.LHSElements);
+    fs::path RHS = BuildPath(TC.RHSElements);
+    const int ExpectCmp = CompareElements(TC.LHSElements, TC.RHSElements);
+    assert(ExpectCmp == TC.Expect);
+    const int GotCmp = normalize_ret(LHS.compare(RHS));
+    assert(GotCmp == TC.Expect);
+  }
+}
+
+int main(int, char**) {
+  test_compare_basic();
+  test_compare_elements();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.concat.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.concat.pass.cpp
new file mode 100644
index 0000000..5c0fb20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.concat.pass.cpp
@@ -0,0 +1,412 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// path& operator+=(const path& x);
+// path& operator+=(const string_type& x);
+// path& operator+=(string_view x);
+// path& operator+=(const value_type* x);
+// path& operator+=(value_type x);
+// template <class Source>
+//   path& operator+=(const Source& x);
+// template <class EcharT>
+//   path& operator+=(EcharT x);
+// template <class Source>
+//   path& concat(const Source& x);
+// template <class InputIterator>
+//   path& concat(InputIterator first, InputIterator last);
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <string>
+#include <string_view>
+#include <cassert>
+
+// On Windows, charset conversions cause allocations in the path class in
+// cases where no allocations are done on other platforms.
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+struct ConcatOperatorTestcase {
+  MultiStringType lhs;
+  MultiStringType rhs;
+  MultiStringType expect;
+};
+
+#define LONGSTR "LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR_LONGSTR"
+#define S(Str) MKSTR(Str)
+const ConcatOperatorTestcase Cases[] =
+    {
+        {S(""),         S(""),                  S("")}
+      , {S("p1"),       S("p2"),                S("p1p2")}
+      , {S("p1/"),      S("/p2"),               S("p1//p2")}
+      , {S(""),         S("\\foo/bar/baz"),     S("\\foo/bar/baz")}
+      , {S("c:\\foo"),  S(""),                  S("c:\\foo")}
+      , {S(LONGSTR),    S("foo"),               S(LONGSTR "foo")}
+      , {S("abcdefghijklmnopqrstuvwxyz/\\"), S("/\\123456789"), S("abcdefghijklmnopqrstuvwxyz/\\/\\123456789")}
+    };
+const ConcatOperatorTestcase LongLHSCases[] =
+    {
+        {S(""),        S(LONGSTR),     S(LONGSTR)}
+      , {S("p1/"),     S(LONGSTR),      S("p1/" LONGSTR)}
+    };
+const ConcatOperatorTestcase CharTestCases[] =
+    {
+        {S(""),       S("P"), S("P")}
+      , {S("/fooba"), S("r"), S("/foobar")}
+    };
+#undef S
+#undef LONGSTR
+
+// The concat operator may need to allocate a temporary buffer before a code_cvt
+// conversion. Test if this allocation occurs by:
+//   1. Create a path, `LHS`, and reserve enough space to append `RHS`.
+//      This prevents `LHS` from allocating during the actual appending.
+//   2. Create a `Source` object `RHS`, which represents a "large" string.
+//      (The string must not trigger the SSO)
+//   3. Concat `RHS` to `LHS` and check for the expected allocation behavior.
+template <class CharT>
+void doConcatSourceAllocTest(ConcatOperatorTestcase const& TC)
+{
+  using namespace fs;
+  using Ptr = CharT const*;
+  using Str = std::basic_string<CharT>;
+  using StrView = std::basic_string_view<CharT>;
+  using InputIter = cpp17_input_iterator<Ptr>;
+
+  const Ptr L = TC.lhs;
+  const Ptr R = TC.rhs;
+  const Ptr E =  TC.expect;
+  std::size_t ReserveSize = StrLen(E) + 1;
+  // basic_string
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    Str  RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS += RHS;
+    }
+    assert(LHS == E);
+  }
+  // basic_string_view
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    StrView  RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS += RHS;
+    }
+    assert(LHS == E);
+  }
+  // CharT*
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    Ptr RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS += RHS;
+    }
+    assert(LHS == E);
+  }
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    Ptr RHS(R);
+    {
+      TEST_NOT_WIN32(DisableAllocationGuard g);
+      LHS.concat(RHS, StrEnd(RHS));
+    }
+    assert(LHS == E);
+  }
+  // input iterator - For non-native char types, appends needs to copy the
+  // iterator range into a contiguous block of memory before it can perform the
+  // code_cvt conversions.
+  // For the path native type, no allocations will be performed because no
+  // conversion is required.
+
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS
+  // Only check allocations if we can pick up allocations done within the
+  // library implementation.
+  bool ExpectNoAllocations = std::is_same<CharT, path::value_type>::value;
+#endif
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    InputIter RHS(R);
+    {
+      RequireAllocationGuard g(0); // require "at least zero" allocations by default
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS
+      if (ExpectNoAllocations)
+        g.requireExactly(0);
+#endif
+      LHS += RHS;
+    }
+    assert(LHS == E);
+  }
+  {
+    path LHS(L); PathReserve(LHS, ReserveSize);
+    InputIter RHS(R);
+    InputIter REnd(StrEnd(R));
+    {
+      RequireAllocationGuard g(0); // require "at least zero" allocations by default
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS
+      if (ExpectNoAllocations)
+        g.requireExactly(0);
+#endif
+      LHS.concat(RHS, REnd);
+    }
+    assert(LHS == E);
+  }
+}
+
+template <class CharT>
+void doConcatSourceTest(ConcatOperatorTestcase const& TC)
+{
+  using namespace fs;
+  using Ptr = CharT const*;
+  using Str = std::basic_string<CharT>;
+  using StrView = std::basic_string_view<CharT>;
+  using InputIter = cpp17_input_iterator<Ptr>;
+  const Ptr L = TC.lhs;
+  const Ptr R = TC.rhs;
+  const Ptr E = TC.expect;
+  // basic_string
+  {
+    path LHS(L);
+    Str RHS(R);
+    path& Ref = (LHS += RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    Str RHS(R);
+    path& Ref = LHS.concat(RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  // basic_string_view
+  {
+    path LHS(L);
+    StrView RHS(R);
+    path& Ref = (LHS += RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    StrView RHS(R);
+    path& Ref = LHS.concat(RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  // Char*
+  {
+    path LHS(L);
+    Str RHS(R);
+    path& Ref = (LHS += RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    Ptr RHS(R);
+    path& Ref = LHS.concat(RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    Ptr RHS(R);
+    path& Ref = LHS.concat(RHS, StrEnd(RHS));
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  // iterators
+  {
+    path LHS(L);
+    InputIter RHS(R);
+    path& Ref = (LHS += RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L); InputIter RHS(R);
+    path& Ref = LHS.concat(RHS);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+  {
+    path LHS(L);
+    InputIter RHS(R);
+    InputIter REnd(StrEnd(R));
+    path& Ref = LHS.concat(RHS, REnd);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+}
+
+template <class CharT>
+void doConcatECharTest(ConcatOperatorTestcase const& TC)
+{
+  using namespace fs;
+  using Ptr = CharT const*;
+  const Ptr RStr = TC.rhs;
+  assert(StrLen(RStr) == 1);
+  const Ptr L   = TC.lhs;
+  const CharT R = RStr[0];
+  const Ptr E   = TC.expect;
+  {
+    path LHS(L);
+    path& Ref = (LHS += R);
+    assert(LHS == E);
+    assert(&Ref == &LHS);
+  }
+}
+
+
+template <class It, class = decltype(fs::path{}.concat(std::declval<It>()))>
+constexpr bool has_concat(int) { return true; }
+template <class It>
+constexpr bool has_concat(long) { return false; }
+
+template <class It, class = decltype(fs::path{}.operator+=(std::declval<It>()))>
+constexpr bool has_concat_op(int) { return true; }
+template <class It>
+constexpr bool has_concat_op(long) { return false; }
+template <class It>
+constexpr bool has_concat_op() { return has_concat_op<It>(0); }
+
+template <class It>
+constexpr bool has_concat() {
+  static_assert(has_concat<It>(0) == has_concat_op<It>(0), "must be same");
+  return has_concat<It>(0) && has_concat_op<It>(0);
+}
+
+void test_sfinae() {
+  using namespace fs;
+  {
+    static_assert(has_concat_op<char>(), "");
+    static_assert(has_concat_op<const char>(), "");
+    static_assert(has_concat_op<char16_t>(), "");
+    static_assert(has_concat_op<const char16_t>(), "");
+  }
+  {
+    using It = const char* const;
+    static_assert(has_concat<It>(), "");
+  }
+  {
+    using It = cpp17_input_iterator<const char*>;
+    static_assert(has_concat<It>(), "");
+  }
+  {
+    struct Traits {
+      using iterator_category = std::input_iterator_tag;
+      using value_type = const char;
+      using pointer = const char*;
+      using reference = const char&;
+      using difference_type = std::ptrdiff_t;
+    };
+    using It = cpp17_input_iterator<const char*, Traits>;
+    static_assert(has_concat<It>(), "");
+  }
+  {
+    using It = cpp17_output_iterator<const char*>;
+    static_assert(!has_concat<It>(), "");
+  }
+  {
+    static_assert(!has_concat<int>(0), "");
+    // operator+=(int) is well formed since it converts to operator+=(value_type)
+    // but concat(int) isn't valid because there is no concat(value_type).
+    // This should probably be addressed by a LWG issue.
+    static_assert(has_concat_op<int>(), "");
+  }
+  {
+    static_assert(!has_concat<int*>(), "");
+  }
+}
+
+int main(int, char**)
+{
+  using namespace fs;
+  for (auto const & TC : Cases) {
+    {
+      path LHS((const char*)TC.lhs);
+      path RHS((const char*)TC.rhs);
+      path& Ref = (LHS += RHS);
+      assert(LHS == (const char*)TC.expect);
+      assert(&Ref == &LHS);
+    }
+    {
+      path LHS((const char*)TC.lhs);
+      std::basic_string_view<path::value_type> RHS((const path::value_type*)TC.rhs);
+      path& Ref = (LHS += RHS);
+      assert(LHS == (const char*)TC.expect);
+      assert(&Ref == &LHS);
+    }
+    doConcatSourceTest<char>    (TC);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    doConcatSourceTest<wchar_t> (TC);
+#endif
+    doConcatSourceTest<char16_t>(TC);
+    doConcatSourceTest<char32_t>(TC);
+  }
+  for (auto const & TC : LongLHSCases) {
+    // Do path test
+    {
+      path LHS((const char*)TC.lhs);
+      path RHS((const char*)TC.rhs);
+      const char* E = TC.expect;
+      PathReserve(LHS, StrLen(E) + 5);
+      {
+        LIBCPP_ONLY(DisableAllocationGuard g);
+        path& Ref = (LHS += RHS);
+        assert(&Ref == &LHS);
+      }
+      assert(LHS == E);
+    }
+    {
+      path LHS((const char*)TC.lhs);
+      std::basic_string_view<path::value_type> RHS((const path::value_type*)TC.rhs);
+      const char* E = TC.expect;
+      PathReserve(LHS, StrLen(E) + 5);
+      {
+        LIBCPP_ONLY(DisableAllocationGuard g);
+        path& Ref = (LHS += RHS);
+        assert(&Ref == &LHS);
+      }
+      assert(LHS == E);
+    }
+    LIBCPP_ONLY(doConcatSourceAllocTest<char>(TC));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    LIBCPP_ONLY(doConcatSourceAllocTest<wchar_t>(TC));
+#endif
+  }
+  for (auto const& TC : CharTestCases) {
+    doConcatECharTest<char>(TC);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    doConcatECharTest<wchar_t>(TC);
+#endif
+    doConcatECharTest<char16_t>(TC);
+    doConcatECharTest<char32_t>(TC);
+  }
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/copy.pass.cpp
new file mode 100644
index 0000000..1155b7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path(path const&)
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+  static_assert(std::is_copy_constructible<path>::value, "");
+  static_assert(!std::is_nothrow_copy_constructible<path>::value, "should not be noexcept");
+  const std::string s("foo");
+  const path p(s);
+  path p2(p);
+  assert(p.string() == s);
+  assert(p2.string() == s);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/default.pass.cpp
new file mode 100644
index 0000000..9ea9c2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/default.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path() noexcept
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+  static_assert(std::is_nothrow_default_constructible<path>::value, "");
+  const path p;
+  assert(p.empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/move.pass.cpp
new file mode 100644
index 0000000..541f644
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/move.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path(path&&) noexcept
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+  static_assert(std::is_nothrow_move_constructible<path>::value, "");
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  const std::string s("we really really really really really really really "
+                      "really really long string so that we allocate");
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(
+      globalMemCounter.checkOutstandingNewEq(1));
+  const fs::path::string_type ps(s.begin(), s.end());
+  path p(s);
+  {
+    DisableAllocationGuard g;
+    path p2(std::move(p));
+    assert(p2.native() == ps);
+    assert(p.native() != ps); // Testing moved from state
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/source.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/source.pass.cpp
new file mode 100644
index 0000000..f119f34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.construct/source.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// template <class Source>
+//      path(const Source& source);
+// template <class InputIterator>
+//      path(InputIterator first, InputIterator last);
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+#include "filesystem_test_helper.h"
+
+
+template <class CharT, class ...Args>
+void RunTestCaseImpl(MultiStringType const& MS, Args... args) {
+  using namespace fs;
+  const fs::path::value_type* Expect = MS;
+  const CharT* TestPath = MS;
+  const CharT* TestPathEnd = StrEnd(TestPath);
+  const std::size_t Size = TestPathEnd - TestPath;
+  const std::size_t SSize = StrEnd(Expect) - Expect;
+  assert(Size == SSize);
+  // StringTypes
+  {
+    const std::basic_string<CharT> S(TestPath);
+    path p(S, args...);
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+    assert(p.string<CharT>() == S);
+  }
+  {
+    const std::basic_string_view<CharT> S(TestPath);
+    path p(S, args...);
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+    assert(p.string<CharT>() == S);
+  }
+  // Char* pointers
+  {
+    path p(TestPath, args...);
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  {
+    path p(TestPath, TestPathEnd, args...);
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  // Iterators
+  {
+    using It = cpp17_input_iterator<const CharT*>;
+    path p(It{TestPath}, args...);
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+  {
+    using It = cpp17_input_iterator<const CharT*>;
+    path p(It{TestPath}, It{TestPathEnd}, args...);
+    assert(p.native() == Expect);
+    assert(p.string<CharT>() == TestPath);
+  }
+}
+
+template <class CharT, class ...Args>
+void RunTestCase(MultiStringType const& MS) {
+  RunTestCaseImpl<CharT>(MS);
+  RunTestCaseImpl<CharT>(MS, fs::path::format::auto_format);
+  RunTestCaseImpl<CharT>(MS, fs::path::format::native_format);
+  RunTestCaseImpl<CharT>(MS, fs::path::format::generic_format);
+  RunTestCaseImpl<CharT>(MS, fs::path::auto_format);
+  RunTestCaseImpl<CharT>(MS, fs::path::native_format);
+  RunTestCaseImpl<CharT>(MS, fs::path::generic_format);
+}
+
+void test_sfinae() {
+  using namespace fs;
+  {
+    using It = const char* const;
+    static_assert(std::is_constructible<path, It>::value, "");
+  }
+  {
+    using It = cpp17_input_iterator<const char*>;
+    static_assert(std::is_constructible<path, It>::value, "");
+  }
+  {
+    struct Traits {
+      using iterator_category = std::input_iterator_tag;
+      using value_type = const char;
+      using pointer = const char*;
+      using reference = const char&;
+      using difference_type = std::ptrdiff_t;
+    };
+    using It = cpp17_input_iterator<const char*, Traits>;
+    static_assert(std::is_constructible<path, It>::value, "");
+  }
+  {
+    using It = cpp17_output_iterator<const char*>;
+    static_assert(!std::is_constructible<path, It>::value, "");
+
+  }
+  {
+    static_assert(!std::is_constructible<path, int*>::value, "");
+  }
+}
+
+int main(int, char**) {
+  for (auto const& MS : PathList) {
+    RunTestCase<char>(MS);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    RunTestCase<char8_t>(MS);
+#endif
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    RunTestCase<wchar_t>(MS);
+#endif
+    RunTestCase<char16_t>(MS);
+    RunTestCase<char32_t>(MS);
+  }
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.decompose/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.decompose/empty.verify.cpp
new file mode 100644
index 0000000..75e88e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.decompose/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <filesystem>
+
+// class path
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    fs::path c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.decompose/path.decompose.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.decompose/path.decompose.pass.cpp
new file mode 100644
index 0000000..3d80cc4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.decompose/path.decompose.pass.cpp
@@ -0,0 +1,260 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// 8.4.9 path decomposition [path.decompose]
+//------------------------------------------
+// path root_name() const;
+// path root_directory() const;
+// path root_path() const;
+// path relative_path() const;
+// path parent_path() const;
+// path filename() const;
+// path stem() const;
+// path extension() const;
+//-------------------------------
+// 8.4.10 path query [path.query]
+//-------------------------------
+// bool empty() const noexcept;
+// bool has_root_path() const;
+// bool has_root_name() const;
+// bool has_root_directory() const;
+// bool has_relative_path() const;
+// bool has_parent_path() const;
+// bool has_filename() const;
+// bool has_stem() const;
+// bool has_extension() const;
+// bool is_absolute() const;
+// bool is_relative() const;
+//-------------------------------
+// 8.5 path iterators [path.itr]
+//-------------------------------
+// iterator begin() const;
+// iterator end() const;
+
+
+#include "filesystem_include.h"
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+#include <type_traits>
+#include <vector>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+struct ComparePathExact {
+  bool operator()(fs::path const& LHS, std::string const& RHS) const {
+    return LHS.string() == RHS;
+  }
+};
+
+struct PathDecomposeTestcase
+{
+    std::string raw;
+    std::vector<std::string> elements;
+    std::string root_path;
+    std::string root_name;
+    std::string root_directory;
+    std::string relative_path;
+    std::string parent_path;
+    std::string filename;
+};
+
+const PathDecomposeTestcase PathTestCases[] =
+  {
+      {"", {}, "", "", "", "", "", ""}
+    , {".", {"."}, "", "", "", ".", "", "."}
+    , {"..", {".."}, "", "", "", "..", "", ".."}
+    , {"foo", {"foo"}, "", "", "", "foo", "", "foo"}
+    , {"/", {"/"}, "/", "", "/", "", "/", ""}
+    , {"/foo", {"/", "foo"}, "/", "", "/", "foo", "/", "foo"}
+    , {"foo/", {"foo", ""}, "", "", "", "foo/", "foo", ""}
+    , {"/foo/", {"/", "foo", ""}, "/", "", "/", "foo/", "/foo", ""}
+    , {"foo/bar", {"foo","bar"}, "",  "", "",  "foo/bar", "foo", "bar"}
+    , {"/foo//bar", {"/","foo","bar"}, "/", "", "/", "foo/bar", "/foo", "bar"}
+#ifdef _WIN32
+    , {"//net", {"//net"}, "//net", "//net", "", "", "//net", ""}
+    , {"//net/", {"//net", "/"}, "//net/", "//net", "/", "", "//net/", ""}
+    , {"//net/foo", {"//net", "/", "foo"}, "//net/", "//net", "/", "foo", "//net/", "foo"}
+#else
+    , {"//net", {"/", "net"}, "/", "", "/", "net", "/", "net"}
+    , {"//net/", {"/", "net", ""}, "/", "", "/", "net/", "//net", ""}
+    , {"//net/foo", {"/", "net", "foo"}, "/", "", "/", "net/foo", "/net", "foo"}
+#endif
+    , {"///foo///", {"/", "foo", ""}, "/", "", "/", "foo///", "///foo", ""}
+    , {"///foo///bar", {"/", "foo", "bar"}, "/", "", "/", "foo///bar", "///foo", "bar"}
+    , {"/.", {"/", "."}, "/", "", "/", ".", "/", "."}
+    , {"./", {".", ""}, "", "", "", "./", ".", ""}
+    , {"/..", {"/", ".."}, "/", "", "/", "..", "/", ".."}
+    , {"../", {"..", ""}, "", "", "", "../", "..", ""}
+    , {"foo/.", {"foo", "."}, "", "", "", "foo/.", "foo", "."}
+    , {"foo/..", {"foo", ".."}, "", "", "", "foo/..", "foo", ".."}
+    , {"foo/./", {"foo", ".", ""}, "", "", "", "foo/./", "foo/.", ""}
+    , {"foo/./bar", {"foo", ".", "bar"}, "", "", "", "foo/./bar", "foo/.", "bar"}
+    , {"foo/../", {"foo", "..", ""}, "", "", "", "foo/../", "foo/..", ""}
+    , {"foo/../bar", {"foo", "..", "bar"}, "", "", "", "foo/../bar", "foo/..", "bar"}
+#ifdef _WIN32
+    , {"c:", {"c:"}, "c:", "c:", "", "", "c:", ""}
+    , {"c:/", {"c:", "/"}, "c:/", "c:", "/", "", "c:/", ""}
+    , {"c:foo", {"c:", "foo"}, "c:", "c:", "", "foo", "c:", "foo"}
+    , {"c:/foo", {"c:", "/", "foo"}, "c:/", "c:", "/", "foo", "c:/", "foo"}
+    , {"c:foo/", {"c:", "foo", ""}, "c:", "c:", "", "foo/", "c:foo", ""}
+    , {"c:/foo/", {"c:", "/", "foo", ""}, "c:/", "c:", "/", "foo/",  "c:/foo", ""}
+    , {"c:/foo/bar", {"c:", "/", "foo", "bar"}, "c:/", "c:", "/", "foo/bar", "c:/foo", "bar"}
+#else
+    , {"c:", {"c:"}, "", "", "", "c:", "", "c:"}
+    , {"c:/", {"c:", ""}, "", "", "", "c:/", "c:", ""}
+    , {"c:foo", {"c:foo"}, "", "", "", "c:foo", "", "c:foo"}
+    , {"c:/foo", {"c:", "foo"}, "", "", "", "c:/foo", "c:", "foo"}
+    , {"c:foo/", {"c:foo", ""}, "", "", "", "c:foo/", "c:foo", ""}
+    , {"c:/foo/", {"c:", "foo", ""}, "", "", "", "c:/foo/",  "c:/foo", ""}
+    , {"c:/foo/bar", {"c:", "foo", "bar"}, "", "", "", "c:/foo/bar", "c:/foo", "bar"}
+#endif
+    , {"prn:", {"prn:"}, "", "", "", "prn:", "", "prn:"}
+#ifdef _WIN32
+    , {"c:\\", {"c:", "\\"}, "c:\\", "c:", "\\", "", "c:\\", ""}
+    , {"c:\\foo", {"c:", "\\", "foo"}, "c:\\", "c:", "\\", "foo", "c:\\", "foo"}
+    , {"c:foo\\", {"c:", "foo", ""}, "c:", "c:", "", "foo\\", "c:foo", ""}
+    , {"c:\\foo\\", {"c:", "\\", "foo", ""}, "c:\\", "c:", "\\", "foo\\", "c:\\foo", ""}
+    , {"c:\\foo/",  {"c:", "\\", "foo", ""}, "c:\\", "c:", "\\", "foo/", "c:\\foo", ""}
+    , {"c:/foo\\bar", {"c:", "/", "foo", "bar"}, "c:\\", "c:", "\\", "foo\\bar", "c:/foo", "bar"}
+#else
+    , {"c:\\", {"c:\\"}, "", "", "", "c:\\", "", "c:\\"}
+    , {"c:\\foo", {"c:\\foo"}, "", "", "", "c:\\foo", "", "c:\\foo"}
+    , {"c:foo\\", {"c:foo\\"}, "", "", "", "c:foo\\", "", "c:foo\\"}
+    , {"c:\\foo\\", {"c:\\foo\\"}, "", "", "", "c:\\foo\\", "", "c:\\foo\\"}
+    , {"c:\\foo/",  {"c:\\foo", ""}, "", "", "", "c:\\foo/", "c:\\foo", ""}
+    , {"c:/foo\\bar", {"c:", "foo\\bar"}, "", "", "", "c:/foo\\bar", "c:", "foo\\bar"}
+#endif
+    , {"//", {"/"}, "/", "", "/", "", "/", ""}
+  };
+
+void decompPathTest()
+{
+  using namespace fs;
+  for (auto const & TC : PathTestCases) {
+    fs::path p(TC.raw);
+    assert(p == TC.raw);
+
+    assert(p.root_path() == TC.root_path);
+    assert(p.has_root_path() != TC.root_path.empty());
+
+#ifndef _WIN32
+    assert(p.root_name().native().empty());
+#endif
+    assert(p.root_name() == TC.root_name);
+    assert(p.has_root_name() != TC.root_name.empty());
+
+    assert(p.root_directory() == TC.root_directory);
+    assert(p.has_root_directory() != TC.root_directory.empty());
+
+    assert(p.relative_path() == TC.relative_path);
+    assert(p.has_relative_path() != TC.relative_path.empty());
+
+    assert(p.parent_path() == TC.parent_path);
+    assert(p.has_parent_path() != TC.parent_path.empty());
+
+    assert(p.filename() == TC.filename);
+    assert(p.has_filename() != TC.filename.empty());
+
+#ifdef _WIN32
+    if (!p.has_root_name()) {
+      assert(p.is_absolute() == false);
+    } else {
+      std::string root_name = p.root_name().string();
+      assert(root_name.length() >= 2);
+      if (root_name[1] == ':') {
+        // Drive letter, absolute if has a root directory
+        assert(p.is_absolute() == p.has_root_directory());
+      } else {
+        // Possibly a server path
+        // Convert to one separator style, for simplicity
+        std::replace(root_name.begin(), root_name.end(), '\\', '/');
+        if (root_name[0] == '/' && root_name[1] == '/')
+          assert(p.is_absolute() == true);
+        else
+          assert(p.is_absolute() == false);
+      }
+    }
+#else
+    assert(p.is_absolute() == p.has_root_directory());
+#endif
+    assert(p.is_relative() != p.is_absolute());
+    if (p.empty())
+      assert(p.is_relative());
+
+    assert(static_cast<std::size_t>(std::distance(p.begin(), p.end())) == TC.elements.size());
+    assert(std::equal(p.begin(), p.end(), TC.elements.begin(), ComparePathExact()));
+
+    // check backwards
+    std::vector<fs::path> Parts;
+    for (auto it = p.end(); it != p.begin(); )
+      Parts.push_back(*--it);
+    assert(static_cast<std::size_t>(std::distance(Parts.begin(), Parts.end())) == TC.elements.size());
+    assert(std::equal(Parts.begin(), Parts.end(), TC.elements.rbegin(), ComparePathExact()));
+  }
+}
+
+
+struct FilenameDecompTestcase
+{
+  std::string raw;
+  std::string filename;
+  std::string stem;
+  std::string extension;
+};
+
+const FilenameDecompTestcase FilenameTestCases[] =
+{
+    {"", "", "", ""}
+  , {".", ".", ".", ""}
+  , {"..", "..", "..", ""}
+  , {"/", "", "", ""}
+  , {"foo", "foo", "foo", ""}
+  , {"/foo/bar.txt", "bar.txt", "bar", ".txt"}
+  , {"foo..txt", "foo..txt", "foo.", ".txt"}
+  , {".profile", ".profile", ".profile", ""}
+  , {".profile.txt", ".profile.txt", ".profile", ".txt"}
+};
+
+
+void decompFilenameTest()
+{
+  using namespace fs;
+  for (auto const & TC : FilenameTestCases) {
+    fs::path p(TC.raw);
+    assert(p == TC.raw);
+    ASSERT_NOEXCEPT(p.empty());
+
+    assert(p.filename() == TC.filename);
+    assert(p.has_filename() != TC.filename.empty());
+
+    assert(p.stem() == TC.stem);
+    assert(p.has_stem() != TC.stem.empty());
+
+    assert(p.extension() == TC.extension);
+    assert(p.has_extension() != TC.extension.empty());
+  }
+}
+
+int main(int, char**)
+{
+  decompPathTest();
+  decompFilenameTest();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.gen/lexically_normal.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.gen/lexically_normal.pass.cpp
new file mode 100644
index 0000000..a3454ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.gen/lexically_normal.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path lexically_normal() const;
+
+#include "filesystem_include.h"
+#include <cstdio>
+#include <string>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**) {
+  // clang-format off
+  struct {
+    std::string input;
+    std::string expect;
+  } TestCases[] = {
+      {"", ""},
+      {"/a/b/c", "/a/b/c"},
+      {"/a/b//c", "/a/b/c"},
+      {"foo/./bar/..", "foo/"},
+      {"foo/.///bar/../", "foo/"},
+      {"/a/b/", "/a/b/"},
+      {"a/b", "a/b"},
+      {"a/b/.", "a/b/"},
+      {"a/b/./", "a/b/"},
+      {"a/..", "."},
+      {".", "."},
+      {"./", "."},
+      {"./.", "."},
+      {"./..", ".."},
+      {"..", ".."},
+      {"../..", "../.."},
+      {"/../", "/"},
+      {"/../..", "/"},
+      {"/../../", "/"},
+      {"..", ".."},
+      {"../", ".."},
+      {"/a/b/c/../", "/a/b/"},
+      {"/a/b/./", "/a/b/"},
+      {"/a/b/c/../d", "/a/b/d"},
+      {"/a/b/c/../d/", "/a/b/d/"},
+#ifdef _WIN32
+      {"//a/", "//a/"},
+      {"//a/b/", "//a/b/"},
+      {"//a/b/.", "//a/b/"},
+      {"//a/..", "//a/"},
+#else
+      {"//a/", "/a/"},
+      {"//a/b/", "/a/b/"},
+      {"//a/b/.", "/a/b/"},
+      {"//a/..", "/"},
+#endif
+      ///===---------------------------------------------------------------===//
+      /// Tests specifically for the clauses under [fs.path.generic]p6
+      ///===---------------------------------------------------------------===//
+      // p1: If the path is empty, stop.
+      {"", ""},
+      // p2: Replace each slash character in the root-name with a preferred
+      // separator.
+      {"NO_ROOT_NAME_ON_LINUX", "NO_ROOT_NAME_ON_LINUX"},
+      // p3: Replace each directory-separator with a preferred-separator.
+      // [ Note: The generic pathname grammar ([fs.path.generic]) defines
+      //   directory-separator as one or more slashes and preferred-separators.
+      //   - end note ]
+      {"/", "/"},
+      {"//", "/"},
+      {"///", "/"},
+      {"a/b", "a/b"},
+      {"a//b", "a/b"},
+      {"a///b", "a/b"},
+      {"a/b/", "a/b/"},
+      {"a/b//", "a/b/"},
+      {"a/b///", "a/b/"},
+      {"///a////b//////", "/a/b/"},
+      // p4: Remove each dot filename and any immediately following directory
+      // separators
+      {"foo/.", "foo/"},
+      {"foo/./bar/.", "foo/bar/"},
+      {"./foo/././bar/./", "foo/bar/"},
+      {".///foo//.////./bar/.///", "foo/bar/"},
+      // p5: As long as any appear, remove a non-dot-dot filename immediately
+      // followed by a directory-separator and a dot-dot filename, along with
+      // any immediately following directory separator.
+      {"foo/..", "."},
+      {"foo/../", "."},
+      {"foo/bar/..", "foo/"},
+      {"foo/bar/../", "foo/"},
+      {"foo/bar/../..", "."},
+      {"foo/bar/../../", "."},
+      {"foo/bar/baz/../..", "foo/"},
+      {"foo/bar/baz/../../", "foo/"},
+      {"foo/bar/./..", "foo/"},
+      {"foo/bar/./../", "foo/"},
+      // p6: If there is a root-directory, remove all dot-dot filenames and any
+      // directory-separators immediately following them. [ Note: These dot-dot
+      // filenames attempt to refer to nonexistent parent directories. - end note ]
+      {"/..", "/"},
+      {"/../", "/"},
+      {"/foo/../..", "/"},
+      {"/../foo", "/foo"},
+      {"/../foo/../..", "/"},
+      // p7: If the last filename is dot-dot, remove any trailing
+      // directory-separator.
+      {"../", ".."},
+      {"../../", "../.."},
+      {"foo/../bar/../..///", ".."},
+      {"foo/../bar/..//..///../", "../.."},
+      // p8: If the path is empty, add a dot
+      {".", "."},
+      {"./", "."},
+      {"foo/..", "."}
+  };
+  // clang-format on
+  int ID = 0;
+  bool Failed = false;
+  for (auto& TC : TestCases) {
+    ++ID;
+    fs::path p(TC.input);
+    const fs::path output = p.lexically_normal();
+    fs::path expect(TC.expect);
+    expect.make_preferred();
+    if (!PathEq(output, expect)) {
+      Failed = true;
+      std::fprintf(stderr, "TEST CASE #%d FAILED:\n"
+                  "  Input: '%s'\n"
+                  "  Expected: '%s'\n"
+                  "  Output: '%s'\n",
+        ID, TC.input.c_str(), expect.string().c_str(), output.string().c_str());
+    }
+  }
+  return Failed;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.gen/lexically_relative_and_proximate.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.gen/lexically_relative_and_proximate.pass.cpp
new file mode 100644
index 0000000..127cc7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.gen/lexically_relative_and_proximate.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path lexically_relative(const path& p) const;
+// path lexically_proximate(const path& p) const;
+
+#include "filesystem_include.h"
+#include <cstdio>
+#include <string>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**) {
+  // clang-format off
+  struct {
+    std::string input;
+    std::string base;
+    std::string expect;
+  } TestCases[] = {
+      {"", "", "."},
+      {"/", "a", ""},
+      {"a", "/", ""},
+      {"//net", "a", ""},
+      {"a", "//net", ""},
+#ifdef _WIN32
+      {"//net/", "//net", ""},
+      {"//net", "//net/", ""},
+#else
+      {"//net/", "//net", "."},
+      {"//net", "//net/", "."},
+#endif
+      {"//base", "a", ""},
+      {"a", "a", "."},
+      {"a/b", "a/b", "."},
+      {"a/b/c/", "a/b/c/", "."},
+      {"//net", "//net", "."},
+      {"//net/", "//net/", "."},
+      {"//net/a/b", "//net/a/b", "."},
+      {"/a/d", "/a/b/c", "../../d"},
+      {"/a/b/c", "/a/d", "../b/c"},
+      {"a/b/c", "a", "b/c"},
+      {"a/b/c", "a/b/c/x/y", "../.."},
+      {"a/b/c", "a/b/c", "."},
+      {"a/b", "c/d", "../../a/b"}
+  };
+  // clang-format on
+  int ID = 0;
+  bool Failed = false;
+  for (auto& TC : TestCases) {
+    ++ID;
+    const fs::path p(TC.input);
+    const fs::path output = p.lexically_relative(TC.base);
+    fs::path expect(TC.expect);
+    expect.make_preferred();
+    auto ReportErr = [&](const char* Testing, fs::path const& Output,
+                                              fs::path const& Expected) {
+      Failed = true;
+      std::fprintf(stderr, "TEST CASE #%d FAILED:\n"
+                  "  Testing: %s\n"
+                  "  Input: '%s'\n"
+                  "  Base: '%s'\n"
+                  "  Expected: '%s'\n"
+                  "  Output: '%s'\n",
+        ID, Testing, TC.input.c_str(), TC.base.c_str(),
+        Expected.string().c_str(), Output.string().c_str());
+    };
+    if (!PathEq(output, expect))
+      ReportErr("path::lexically_relative", output, expect);
+    const fs::path proximate_output = p.lexically_proximate(TC.base);
+    // [path.gen] lexically_proximate
+    // Returns: If the value of lexically_relative(base) is not an empty path,
+    // return it. Otherwise return *this.
+    const fs::path proximate_expect = expect.empty() ? p : expect;
+    if (!PathEq(proximate_output, proximate_expect))
+      ReportErr("path::lexically_proximate", proximate_output, proximate_expect);
+  }
+  return Failed;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/generic_string_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/generic_string_alloc.pass.cpp
new file mode 100644
index 0000000..d67fc85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/generic_string_alloc.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// template <class ECharT, class Traits = char_traits<ECharT>,
+//           class Allocator = allocator<ECharT>>
+// basic_string<ECharT, Traits, Allocator>
+// generic_string(const Allocator& a = Allocator()) const;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "min_allocator.h"
+#include "filesystem_test_helper.h"
+
+MultiStringType longString = MKSTR("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/123456789/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
+
+
+// generic_string<C, T, A> forwards to string<C, T, A>. Tests for
+// string<C, T, A>() are in "path.native.obs/string_alloc.pass.cpp".
+// generic_string is minimally tested here.
+template <class CharT>
+void doAllocTest()
+{
+  using namespace fs;
+  using Traits = std::char_traits<CharT>;
+  using Alloc = malloc_allocator<CharT>;
+  using Str = std::basic_string<CharT, Traits, Alloc>;
+  const CharT* expect = longString;
+  const path p((const char*)longString);
+  {
+    // On Windows, charset conversions cause allocations outside of the
+    // provided allocator.
+    TEST_NOT_WIN32(DisableAllocationGuard g);
+    Alloc a;
+    Alloc::disable_default_constructor = true;
+    Str s = p.generic_string<CharT, Traits, Alloc>(a);
+    assert(s == expect);
+    assert(Alloc::alloc_count > 0);
+    assert(Alloc::outstanding_alloc() == 1);
+    Alloc::disable_default_constructor = false;
+  }
+}
+
+int main(int, char**)
+{
+  doAllocTest<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  doAllocTest<wchar_t>();
+#endif
+  doAllocTest<char16_t>();
+  doAllocTest<char32_t>();
+#if TEST_STD_VER > 17 && defined(__cpp_lib_char8_t)
+  doAllocTest<char8_t>();
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/named_overloads.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/named_overloads.pass.cpp
new file mode 100644
index 0000000..f381fb5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.generic.obs/named_overloads.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// std::string  generic_string() const;
+// std::wstring generic_wstring() const;
+// std::u8string  generic_u8string() const;
+// std::u16string generic_u16string() const;
+// std::u32string generic_u32string() const;
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "min_allocator.h"
+#include "filesystem_test_helper.h"
+
+MultiStringType input = MKSTR("c:\\foo\\bar");
+#ifdef _WIN32
+// On windows, the generic_* accessors return a path with forward slashes
+MultiStringType ref = MKSTR("c:/foo/bar");
+#else
+// On posix, the input string is returned as-is
+MultiStringType ref = MKSTR("c:\\foo\\bar");
+#endif
+
+int main(int, char**)
+{
+  using namespace fs;
+  auto const& MS = ref;
+  const char* value = input;
+  const path p(value);
+  {
+    std::string s = p.generic_string();
+    assert(s == (const char*)MS);
+  }
+  {
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    ASSERT_SAME_TYPE(decltype(p.generic_u8string()), std::u8string);
+    std::u8string s = p.generic_u8string();
+    assert(s == (const char8_t*)MS);
+#else
+    ASSERT_SAME_TYPE(decltype(p.generic_u8string()), std::string);
+    std::string s = p.generic_u8string();
+    assert(s == (const char*)MS);
+#endif
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wstring s = p.generic_wstring();
+    assert(s == (const wchar_t*)MS);
+  }
+#endif
+  {
+    std::u16string s = p.generic_u16string();
+    assert(s == (const char16_t*)MS);
+  }
+  {
+    std::u32string s = p.generic_u32string();
+    assert(s == (const char32_t*)MS);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/clear.pass.cpp
new file mode 100644
index 0000000..9a68e18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/clear.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// void clear() noexcept
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+  {
+    path p;
+    ASSERT_NOEXCEPT(p.clear());
+    ASSERT_SAME_TYPE(void, decltype(p.clear()));
+    p.clear();
+    assert(p.empty());
+  }
+  {
+    const path p("/foo/bar/baz");
+    path p2(p);
+    assert(p == p2);
+    p2.clear();
+    assert(p2.empty());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/make_preferred.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/make_preferred.pass.cpp
new file mode 100644
index 0000000..da505d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/make_preferred.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path& make_preferred()
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+struct MakePreferredTestcase {
+  const char* value;
+  const char* expected_posix;
+  const char* expected_windows;
+};
+
+const MakePreferredTestcase TestCases[] =
+  {
+      {"", "", ""}
+    , {"hello_world", "hello_world", "hello_world"}
+    , {"/", "/", "\\"}
+    , {"/foo/bar/baz/", "/foo/bar/baz/", "\\foo\\bar\\baz\\"}
+    , {"\\", "\\", "\\"}
+    , {"\\foo\\bar\\baz\\", "\\foo\\bar\\baz\\", "\\foo\\bar\\baz\\"}
+    , {"\\foo\\/bar\\/baz\\", "\\foo\\/bar\\/baz\\", "\\foo\\\\bar\\\\baz\\"}
+  };
+
+int main(int, char**)
+{
+  // This operation is an identity operation on linux.
+  // On windows, compare with preferred_win, if set.
+  using namespace fs;
+  for (auto const & TC : TestCases) {
+    path p(TC.value);
+    assert(p == TC.value);
+    path& Ref = (p.make_preferred());
+#ifdef _WIN32
+    std::string s(TC.expected_windows);
+#else
+    std::string s(TC.expected_posix);
+#endif
+    assert(p.string() == s);
+    assert(&Ref == &p);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/remove_filename.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/remove_filename.pass.cpp
new file mode 100644
index 0000000..324d0dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/remove_filename.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path& remove_filename()
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+struct RemoveFilenameTestcase {
+  const char* value;
+  const char* expect;
+};
+
+const RemoveFilenameTestcase TestCases[] =
+  {
+      {"", ""}
+    , {"/", "/"}
+    , {"//", "//"}
+    , {"///", "///"}
+#ifdef _WIN32
+    , {"\\", "\\"}
+#else
+    , {"\\", ""}
+#endif
+    , {".", ""}
+    , {"..", ""}
+    , {"/foo", "/"}
+    , {"foo/bar", "foo/"}
+    , {"foo/", "foo/"}
+#ifdef _WIN32
+    , {"//foo", "//foo"}
+#else
+    , {"//foo", "//"}
+#endif
+    , {"//foo/", "//foo/"}
+    , {"//foo///", "//foo///"}
+    , {"///foo", "///"}
+    , {"///foo/", "///foo/"}
+    , {"/foo/", "/foo/"}
+    , {"/foo/.", "/foo/"}
+    , {"/foo/..", "/foo/"}
+    , {"/foo/////", "/foo/////"}
+#ifdef _WIN32
+    , {"/foo\\\\", "/foo\\\\"}
+#else
+    , {"/foo\\\\", "/"}
+#endif
+    , {"/foo//\\/", "/foo//\\/"}
+    , {"///foo", "///"}
+    , {"file.txt", ""}
+    , {"bar/../baz/./file.txt", "bar/../baz/./"}
+  };
+
+int main(int, char**)
+{
+  using namespace fs;
+  for (auto const & TC : TestCases) {
+    path const p_orig(TC.value);
+    path p(p_orig);
+    assert(p == TC.value);
+    path& Ref = (p.remove_filename());
+    assert(p == TC.expect);
+    assert(&Ref == &p);
+    assert(!p.has_filename());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_extension.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_extension.pass.cpp
new file mode 100644
index 0000000..f77f3d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_extension.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path& replace_extension(path const& p = path())
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+struct ReplaceExtensionTestcase {
+  const char* value;
+  const char* expect;
+  const char* extension;
+};
+
+const ReplaceExtensionTestcase TestCases[] =
+  {
+      {"", "", ""}
+    , {"foo.cpp", "foo", ""}
+    , {"foo.cpp", "foo.", "."}
+    , {"foo..cpp", "foo..txt", "txt"}
+    , {"", ".txt", "txt"}
+    , {"", ".txt", ".txt"}
+    , {"/foo", "/foo.txt", ".txt"}
+    , {"/foo", "/foo.txt", "txt"}
+    , {"/foo.cpp", "/foo.txt", ".txt"}
+    , {"/foo.cpp", "/foo.txt", "txt"}
+  };
+const ReplaceExtensionTestcase NoArgCases[] =
+  {
+      {"", "", ""}
+    , {"foo", "foo", ""}
+    , {"foo.cpp", "foo", ""}
+    , {"foo..cpp", "foo.", ""}
+};
+
+int main(int, char**)
+{
+  using namespace fs;
+  for (auto const & TC : TestCases) {
+    path p(TC.value);
+    assert(p == TC.value);
+    path& Ref = (p.replace_extension(TC.extension));
+    assert(p == TC.expect);
+    assert(&Ref == &p);
+  }
+  for (auto const& TC : NoArgCases) {
+    path p(TC.value);
+    assert(p == TC.value);
+    path& Ref = (p.replace_extension());
+    assert(p == TC.expect);
+    assert(&Ref == &p);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp
new file mode 100644
index 0000000..83ca785
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/replace_filename.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// path& replace_filename( const path& replacement );
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+struct ReplaceFilenameTestcase {
+  const char* value;
+  const char* expect;
+  const char* filename;
+};
+
+const ReplaceFilenameTestcase TestCases[] =
+  {
+      {"/foo", "/bar", "bar"}
+    , {"/foo", "/", ""}
+    , {"foo", "bar", "bar"}
+    , {"/", "/bar", "bar"}
+#ifdef _WIN32
+    , {"\\", "\\bar", "bar"}
+#else
+    , {"\\", "bar", "bar"}
+#endif
+    , {"///", "///bar", "bar"}
+#ifdef _WIN32
+    , {"\\\\", "\\\\bar", "bar"}
+    , {"\\/\\", "\\/\\bar", "bar"}
+#else
+    , {"\\\\", "bar", "bar"}
+    , {"\\/\\", "\\/bar", "bar"}
+#endif
+    , {".", "bar", "bar"}
+    , {"..", "bar", "bar"}
+    , {"/foo\\baz/bong/", "/foo\\baz/bong/bar", "bar"}
+    , {"/foo\\baz/bong", "/foo\\baz/bar", "bar"}
+  };
+
+int main(int, char**)
+{
+  using namespace fs;
+  for (auto const & TC : TestCases) {
+    path p(TC.value);
+    assert(p == TC.value);
+    path& Ref = p.replace_filename(TC.filename);
+    assert(p == TC.expect);
+    assert(&Ref == &p);
+    // Tests Effects "as-if": remove_filename() append(filename)
+    {
+      path p2(TC.value);
+      path replace(TC.filename);
+      p2.remove_filename();
+      p2 /= replace;
+      assert(p == p2);
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/swap.pass.cpp
new file mode 100644
index 0000000..5039563
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.modifiers/swap.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// void swap(path& rhs) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+struct SwapTestcase {
+  const char* value1;
+  const char* value2;
+};
+
+#define LONG_STR1 "_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG"
+#define LONG_STR2 "_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2_THIS_IS_LONG2"
+const SwapTestcase TestCases[] =
+  {
+      {"", ""}
+    , {"shortstr", LONG_STR1}
+    , {LONG_STR1, "shortstr"}
+    , {LONG_STR1, LONG_STR2}
+  };
+#undef LONG_STR1
+#undef LONG_STR2
+
+int main(int, char**)
+{
+  using namespace fs;
+  {
+    path p;
+    ASSERT_NOEXCEPT(p.swap(p));
+    ASSERT_SAME_TYPE(void, decltype(p.swap(p)));
+  }
+  for (auto const & TC : TestCases) {
+    path p1(TC.value1);
+    path p2(TC.value2);
+    {
+      DisableAllocationGuard g;
+      p1.swap(p2);
+    }
+    assert(p1 == TC.value2);
+    assert(p2 == TC.value1);
+    {
+      DisableAllocationGuard g;
+      p1.swap(p2);
+    }
+    assert(p1 == TC.value1);
+    assert(p2 == TC.value2);
+  }
+  // self-swap
+  {
+    const char* Val = "aoeuaoeuaoeuaoeuaoeuaoeuaoeuaoeuaoeu";
+    path p1(Val);
+    assert(p1 == Val);
+    {
+      DisableAllocationGuard g;
+      p1.swap(p1);
+    }
+    assert(p1 == Val);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/c_str.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/c_str.pass.cpp
new file mode 100644
index 0000000..0d17436
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/c_str.pass.cpp
@@ -0,0 +1,44 @@
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// const value_type* c_str() const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**)
+{
+  using namespace fs;
+  const char* const value = "hello world";
+  const std::string str_value = value;
+  const fs::path::string_type pathstr_value(str_value.begin(), str_value.end());
+  { // Check signature
+    path p(value);
+    ASSERT_SAME_TYPE(path::value_type const*, decltype(p.c_str()));
+    ASSERT_NOEXCEPT(p.c_str());
+  }
+  {
+    path p(value);
+    assert(p.c_str() == pathstr_value);
+    assert(p.native().c_str() == p.c_str());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/named_overloads.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/named_overloads.pass.cpp
new file mode 100644
index 0000000..0811e90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/named_overloads.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// These tests require locale for non-char paths
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// std::string  string() const;
+// std::wstring wstring() const;
+// std::u8string  u8string() const;
+// std::u16string u16string() const;
+// std::u32string u32string() const;
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "min_allocator.h"
+#include "filesystem_test_helper.h"
+
+
+MultiStringType longString = MKSTR("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/123456789/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
+
+int main(int, char**)
+{
+  using namespace fs;
+  auto const& MS = longString;
+  const char* value = longString;
+  const path p(value);
+  {
+    std::string s = p.string();
+    assert(s == value);
+  }
+  {
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    ASSERT_SAME_TYPE(decltype(p.u8string()), std::u8string);
+    std::u8string s = p.u8string();
+    assert(s == (const char8_t*)MS);
+#else
+    ASSERT_SAME_TYPE(decltype(p.u8string()), std::string);
+    std::string s = p.u8string();
+    assert(s == (const char*)MS);
+#endif
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wstring s = p.wstring();
+    assert(s == (const wchar_t*)MS);
+  }
+#endif
+  {
+    std::u16string s = p.u16string();
+    assert(s == (const char16_t*)MS);
+  }
+  {
+    std::u32string s = p.u32string();
+    assert(s == (const char32_t*)MS);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/native.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/native.pass.cpp
new file mode 100644
index 0000000..2d41fc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/native.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// const string_type& native() const noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**)
+{
+  using namespace fs;
+  const char* const value = "hello world";
+  std::string value_str(value);
+  fs::path::string_type pathstr_value(value_str.begin(), value_str.end());
+  { // Check signature
+    path p(value);
+    ASSERT_SAME_TYPE(path::string_type const&, decltype(p.native()));
+    ASSERT_NOEXCEPT(p.native());
+  }
+  { // native() is tested elsewhere
+    path p(value);
+    assert(p.native() == pathstr_value);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/operator_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/operator_string.pass.cpp
new file mode 100644
index 0000000..70a36f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.native.obs/operator_string.pass.cpp
@@ -0,0 +1,49 @@
+
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// operator string_type() const;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**)
+{
+  using namespace fs;
+  using string_type = path::string_type;
+  const char* const value = "hello world";
+  std::string value_str(value);
+  fs::path::string_type pathstr_value(value_str.begin(), value_str.end());
+  { // Check signature
+    path p(value);
+    static_assert(std::is_convertible<path, string_type>::value, "");
+    static_assert(std::is_constructible<string_type, path>::value, "");
+    ASSERT_SAME_TYPE(string_type, decltype(p.operator string_type()));
+    ASSERT_NOT_NOEXCEPT(p.operator string_type());
+  }
+  {
+    path p(value);
+    assert(p.native() == pathstr_value);
+    string_type s = p;
+    assert(s == pathstr_value);
+    assert(p == pathstr_value);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.query/tested_in_path_decompose.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.query/tested_in_path_decompose.pass.cpp
new file mode 100644
index 0000000..b275831
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.member/path.query/tested_in_path_decompose.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+//-------------------------------
+// 8.4.10 path query [path.query]
+//-------------------------------
+// bool empty() const noexcept;
+// bool has_root_path() const;
+// bool has_root_name() const;
+// bool has_root_directory() const;
+// bool has_relative_path() const;
+// bool has_parent_path() const;
+// bool has_filename() const;
+// bool has_stem() const;
+// bool has_extension() const;
+// bool is_absolute() const;
+// bool is_relative() const;
+
+// tested in path.decompose
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/append_op.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/append_op.fail.cpp
new file mode 100644
index 0000000..6a44722
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/append_op.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+#include "filesystem_include.h"
+
+using namespace fs;
+
+struct ConvToPath {
+  operator fs::path() const {
+    return "";
+  }
+};
+
+int main(int, char**) {
+  ConvToPath LHS, RHS;
+  (void)(LHS / RHS); // expected-error {{invalid operands to binary expression}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/append_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/append_op.pass.cpp
new file mode 100644
index 0000000..57e8301
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/append_op.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path operator/(path const&, path const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "filesystem_test_helper.h"
+
+// This is mainly tested via the member append functions.
+int main(int, char**)
+{
+  using namespace fs;
+  path p1("abc");
+  path p2("def");
+  path p3 = p1 / p2;
+  assert(p3 == "abc/def");
+
+  path p4 = p1 / "def";
+  assert(p4 == "abc/def");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/comparison_ops.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/comparison_ops.fail.cpp
new file mode 100644
index 0000000..e8eb1bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/comparison_ops.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+
+#include "filesystem_include.h"
+
+using namespace fs;
+
+struct ConvToPath {
+  operator fs::path() const {
+    return "";
+  }
+};
+
+int main(int, char**) {
+  ConvToPath LHS, RHS;
+  (void)(LHS == RHS); // expected-error {{invalid operands to binary expression}}
+  (void)(LHS != RHS); // expected-error {{invalid operands to binary expression}}
+  (void)(LHS < RHS); // expected-error {{invalid operands to binary expression}}
+  (void)(LHS <= RHS); // expected-error {{invalid operands to binary expression}}
+  (void)(LHS > RHS); // expected-error {{invalid operands to binary expression}}
+  (void)(LHS >= RHS); // expected-error {{invalid operands to binary expression}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/comparison_ops_tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/comparison_ops_tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..c96bf8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/comparison_ops_tested_elsewhere.pass.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The comparison operators are tested as part of [path.compare]
+// in class.path/path.members/path.compare.pass.cpp
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/hash_value_tested_elswhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/hash_value_tested_elswhere.pass.cpp
new file mode 100644
index 0000000..1efeba1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/hash_value_tested_elswhere.pass.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The "hash_value" function is tested as part of [path.compare]
+// in class.path/path.members/path.compare.pass.cpp
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.factory.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.factory.pass.cpp
new file mode 100644
index 0000000..be502a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.factory.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <filesystem>
+
+// template <class Source>
+//    path u8path(Source const&);
+// template <class InputIter>
+//   path u8path(InputIter, InputIter);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**)
+{
+  using namespace fs;
+  const char* In1 = "abcd/efg";
+  const std::string In2(In1);
+  const auto In3 = In2.begin();
+  const auto In3End = In2.end();
+  {
+    path p = fs::u8path(In1);
+    assert(p == In1);
+  }
+  {
+    path p = fs::u8path(In2);
+    assert(p == In1);
+  }
+  {
+    path p = fs::u8path(In2.data());
+    assert(p == In1);
+  }
+  {
+    path p = fs::u8path(In3, In3End);
+    assert(p == In1);
+  }
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t) && defined(_LIBCPP_VERSION) && !defined(TEST_HAS_NO_LOCALIZATION)
+  const char8_t* u8In1 = u8"abcd/efg";
+  const std::u8string u8In2(u8In1);
+  const auto u8In3 = u8In2.begin();
+  const auto u8In3End = u8In2.end();
+  // Proposed in P1423, marked tested only for libc++
+  {
+    path p = fs::u8path(u8In1);
+    assert(p == In1);
+  }
+  {
+    path p = fs::u8path(u8In2);
+    assert(p == In1);
+  }
+  {
+    path p = fs::u8path(u8In2.data());
+    assert(p == In1);
+  }
+  {
+    path p = fs::u8path(u8In3, u8In3End);
+    assert(p == In1);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.io.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.io.pass.cpp
new file mode 100644
index 0000000..2f21649
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.io.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-localization
+
+// <filesystem>
+
+// class path
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os, const path& p);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is, path& p)
+//
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <sstream>
+#include <cassert>
+#include <iostream>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+MultiStringType InStr =  MKSTR("abcdefg/\"hijklmnop\"/qrstuvwxyz/123456789");
+MultiStringType OutStr = MKSTR("\"abcdefg/\\\"hijklmnop\\\"/qrstuvwxyz/123456789\"");
+
+template <class CharT>
+void doIOTest() {
+  using namespace fs;
+  using Ptr = const CharT*;
+  using StrStream = std::basic_stringstream<CharT>;
+  const Ptr E = OutStr;
+  const path p((const char*)InStr);
+  StrStream ss;
+  { // test output
+    auto& ret = (ss << p);
+    assert(ss.str() == E);
+    assert(&ret == &ss);
+  }
+  { // test input
+    path p_in;
+    auto& ret = ss >> p_in;
+    assert(p_in.native() == (const path::value_type*)InStr);
+    assert(&ret == &ss);
+  }
+}
+
+namespace impl {
+using namespace fs;
+
+template <class Stream, class Tp, class = decltype(std::declval<Stream&>() << std::declval<Tp&>())>
+std::true_type is_ostreamable_imp(int);
+
+template <class Stream, class Tp>
+std::false_type is_ostreamable_imp(long);
+
+template <class Stream, class Tp, class = decltype(std::declval<Stream&>() >> std::declval<Tp&>())>
+std::true_type is_istreamable_imp(int);
+
+template <class Stream, class Tp>
+std::false_type is_istreamable_imp(long);
+
+
+} // namespace impl
+
+template <class Stream, class Tp>
+struct is_ostreamable : decltype(impl::is_ostreamable_imp<Stream, Tp>(0)) {};
+template <class Stream, class Tp>
+struct is_istreamable : decltype(impl::is_istreamable_imp<Stream, Tp>(0)) {};
+
+void test_LWG2989() {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  static_assert(!is_ostreamable<decltype(std::cout), std::wstring>::value, "");
+  static_assert(!is_ostreamable<decltype(std::wcout), std::string>::value, "");
+  static_assert(!is_istreamable<decltype(std::cin), std::wstring>::value, "");
+  static_assert(!is_istreamable<decltype(std::wcin), std::string>::value, "");
+#endif
+}
+
+int main(int, char**) {
+  doIOTest<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  doIOTest<wchar_t>();
+#endif
+  // TODO(var-const): uncomment when it becomes possible to instantiate a `basic_ostream` object with a sized character
+  // type (see https://llvm.org/PR53119).
+  //doIOTest<char16_t>();
+  //doIOTest<char32_t>();
+  test_LWG2989();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.io.unicode_bug.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.io.unicode_bug.pass.cpp
new file mode 100644
index 0000000..e524ecd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/path.io.unicode_bug.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os, const path& p);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is, path& p)
+//
+
+// TODO(EricWF) This test fails because "std::quoted" fails to compile
+// for char16_t and char32_t types. Combine with path.io.pass.cpp when this
+// passes.
+// XFAIL: *
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+MultiStringType InStr =  MKSTR("abcdefg/\"hijklmnop\"/qrstuvwxyz/123456789");
+MultiStringType OutStr = MKSTR("\"abcdefg/\\\"hijklmnop\\\"/qrstuvwxyz/123456789\"");
+
+template <class CharT>
+void doIOTest() {
+  using namespace fs;
+  using Ptr = const CharT*;
+  using StrStream = std::basic_stringstream<CharT>;
+  const char* const InCStr = InStr;
+  const Ptr E = OutStr;
+  const path p((const char*)InStr);
+  StrStream ss;
+  { // test output
+    auto& ret = (ss << p);
+    assert(ss.str() == E);
+    assert(&ret == &ss);
+  }
+  { // test input
+    path p_in;
+    auto& ret = ss >> p_in;
+    assert(p_in.native() == (const char*)InStr);
+    assert(&ret == &ss);
+  }
+}
+
+
+int main(int, char**) {
+  doIOTest<char16_t>();
+  doIOTest<char32_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/swap.pass.cpp
new file mode 100644
index 0000000..817742a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/path.nonmember/swap.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void swap(path& lhs, path& rhs) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+// NOTE: this is tested in path.members/path.modifiers via the member swap.
+int main(int, char**)
+{
+  using namespace fs;
+  const char* value1 = "foo/bar/baz";
+  const char* value2 = "_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG_THIS_IS_LONG";
+  {
+    path p1(value1);
+    path p2(value2);
+    fs::path::string_type ps1 = p1.native();
+    fs::path::string_type ps2 = p2.native();
+
+    DisableAllocationGuard g;
+    swap(p1, p2);
+    ASSERT_NOEXCEPT(swap(p1, p2));
+    ASSERT_SAME_TYPE(void, decltype(swap(p1, p2)));
+    assert(p1.native() == ps2);
+    assert(p2.native() == ps1);
+    swap(p1, p2);
+    assert(p1.native() == ps1);
+    assert(p2.native() == ps2);
+  }
+
+  // Test the swap two-step idiom
+  {
+    path p1(value1);
+    path p2(value2);
+    fs::path::string_type ps1 = p1.native();
+    fs::path::string_type ps2 = p2.native();
+
+    DisableAllocationGuard g;
+    using namespace std;
+    swap(p1, p2);
+    ASSERT_NOEXCEPT(swap(p1, p2));
+    ASSERT_SAME_TYPE(void, decltype(swap(p1, p2)));
+    assert(p1.native() == ps2);
+    assert(p2.native() == ps1);
+    swap(p1, p2);
+    assert(p1.native() == ps1);
+    assert(p2.native() == ps2);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..d07b4e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// path
+
+#include "filesystem_include.h"
+
+#include <concepts>
+#include <ranges>
+
+
+
+static_assert(std::same_as<std::ranges::iterator_t<fs::path>, fs::path::iterator>);
+static_assert(std::ranges::common_range<fs::path>);
+static_assert(std::ranges::bidirectional_range<fs::path>);
+static_assert(!std::ranges::view<fs::path>);
+static_assert(!std::ranges::random_access_range<fs::path>);
+static_assert(!std::ranges::sized_range<fs::path>);
+static_assert(!std::ranges::borrowed_range<fs::path>);
+static_assert(std::ranges::viewable_range<fs::path>);
+
+static_assert(std::same_as<std::ranges::iterator_t<fs::path const>, fs::path::const_iterator>);
+static_assert(std::ranges::common_range<fs::path const>);
+static_assert(std::ranges::bidirectional_range<fs::path const>);
+static_assert(!std::ranges::view<fs::path const>);
+static_assert(!std::ranges::random_access_range<fs::path const>);
+static_assert(!std::ranges::sized_range<fs::path const>);
+static_assert(!std::ranges::borrowed_range<fs::path const>);
+static_assert(!std::ranges::viewable_range<fs::path const>);
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/synop.pass.cpp
new file mode 100644
index 0000000..ab18399
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.path/synop.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path
+
+// typedef ... value_type;
+// typedef basic_string<value_type> string_type;
+// static constexpr value_type preferred_separator = ...;
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+  using namespace fs;
+#ifdef _WIN32
+  ASSERT_SAME_TYPE(path::value_type, wchar_t);
+#else
+  ASSERT_SAME_TYPE(path::value_type, char);
+#endif
+  ASSERT_SAME_TYPE(path::string_type, std::basic_string<path::value_type>);
+  {
+    ASSERT_SAME_TYPE(const path::value_type, decltype(path::preferred_separator));
+#ifdef _WIN32
+    static_assert(path::preferred_separator == '\\', "");
+#else
+    static_assert(path::preferred_separator == '/', "");
+#endif
+    // Make preferred_separator ODR used by taking its address.
+    const path::value_type* dummy = &path::preferred_separator;
+    ((void)dummy);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..c633d3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// recursive_directory_iterator
+
+#include "filesystem_include.h"
+
+#include <concepts>
+#include <ranges>
+
+static_assert(std::same_as<std::ranges::iterator_t<fs::recursive_directory_iterator>, fs::recursive_directory_iterator>);
+static_assert(std::ranges::common_range<fs::recursive_directory_iterator>);
+static_assert(std::ranges::input_range<fs::recursive_directory_iterator>);
+static_assert(std::ranges::view<fs::recursive_directory_iterator>);
+static_assert(!std::ranges::sized_range<fs::recursive_directory_iterator>);
+static_assert(std::ranges::borrowed_range<fs::recursive_directory_iterator>);
+static_assert(std::ranges::viewable_range<fs::recursive_directory_iterator>);
+
+static_assert(std::same_as<std::ranges::iterator_t<fs::recursive_directory_iterator&>, fs::recursive_directory_iterator>);
+static_assert(std::ranges::common_range<fs::recursive_directory_iterator&>);
+static_assert(std::ranges::input_range<fs::recursive_directory_iterator&>);
+static_assert(!std::ranges::view<fs::recursive_directory_iterator&>);
+static_assert(!std::ranges::sized_range<fs::recursive_directory_iterator&>);
+static_assert(std::ranges::borrowed_range<fs::recursive_directory_iterator&>);
+static_assert(std::ranges::viewable_range<fs::recursive_directory_iterator&>);
+
+static_assert(std::same_as<std::ranges::iterator_t<const fs::recursive_directory_iterator&>, fs::recursive_directory_iterator>);
+static_assert(std::ranges::common_range<const fs::recursive_directory_iterator&>);
+static_assert(std::ranges::input_range<const fs::recursive_directory_iterator&>);
+static_assert(!std::ranges::view<const fs::recursive_directory_iterator&>);
+static_assert(!std::ranges::sized_range<const fs::recursive_directory_iterator&>);
+static_assert(std::ranges::borrowed_range<const fs::recursive_directory_iterator&>);
+static_assert(std::ranges::viewable_range<const fs::recursive_directory_iterator&>);
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy.pass.cpp
new file mode 100644
index 0000000..aacf160
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// recursive_recursive_directory_iterator(recursive_recursive_directory_iterator const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_copy_construct_tests)
+
+TEST_CASE(test_constructor_signature)
+{
+    using D = recursive_directory_iterator;
+    static_assert(std::is_copy_constructible<D>::value, "");
+    //static_assert(!std::is_nothrow_copy_constructible<D>::value, "");
+}
+
+TEST_CASE(test_copy_end_iterator)
+{
+    const recursive_directory_iterator endIt;
+    recursive_directory_iterator it(endIt);
+    TEST_CHECK(it == endIt);
+}
+
+TEST_CASE(test_copy_valid_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const recursive_directory_iterator endIt{};
+
+    // build 'it' up with "interesting" non-default state so we can test
+    // that it gets copied. We want to get 'it' into a state such that:
+    //  it.options() != directory_options::none
+    //  it.depth() != 0
+    //  it.recursion_pending() != true
+    const directory_options opts = directory_options::skip_permission_denied;
+    recursive_directory_iterator it(testDir, opts);
+    TEST_REQUIRE(it != endIt);
+    while (it.depth() == 0) {
+        ++it;
+        TEST_REQUIRE(it != endIt);
+    }
+    it.disable_recursion_pending();
+    TEST_CHECK(it.options() == opts);
+    TEST_CHECK(it.depth() == 1);
+    TEST_CHECK(it.recursion_pending() == false);
+    const path entry = *it;
+
+    // OPERATION UNDER TEST //
+    const recursive_directory_iterator it2(it);
+    // ------------------- //
+
+    TEST_REQUIRE(it2 == it);
+    TEST_CHECK(*it2 == entry);
+    TEST_CHECK(it2.depth() == 1);
+    TEST_CHECK(it2.recursion_pending() == false);
+    TEST_CHECK(it != endIt);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy_assign.pass.cpp
new file mode 100644
index 0000000..dc689ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/copy_assign.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// recursive_directory_iterator& operator=(recursive_directory_iterator const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_copy_assign_tests)
+
+recursive_directory_iterator createInterestingIterator(const static_test_env &static_env)
+    // Create an "interesting" iterator where all fields are
+    // in a non-default state. The returned 'it' is in a
+    // state such that:
+    //   it.options() == directory_options::skip_permission_denied
+    //   it.depth() == 1
+    //   it.recursion_pending() == true
+{
+    const path testDir = static_env.Dir;
+    const recursive_directory_iterator endIt;
+    recursive_directory_iterator it(testDir,
+                                    directory_options::skip_permission_denied);
+    TEST_ASSERT(it != endIt);
+    while (it.depth() != 1) {
+        ++it;
+        TEST_ASSERT(it != endIt);
+    }
+    TEST_ASSERT(it.depth() == 1);
+    it.disable_recursion_pending();
+    return it;
+}
+
+
+recursive_directory_iterator createDifferentInterestingIterator(const static_test_env &static_env)
+    // Create an "interesting" iterator where all fields are
+    // in a non-default state. The returned 'it' is in a
+    // state such that:
+    //   it.options() == directory_options::follow_directory_symlink
+    //   it.depth() == 2
+    //   it.recursion_pending() == false
+{
+    const path testDir = static_env.Dir;
+    const recursive_directory_iterator endIt;
+    recursive_directory_iterator it(testDir,
+                                    directory_options::follow_directory_symlink);
+    TEST_ASSERT(it != endIt);
+    while (it.depth() != 2) {
+        ++it;
+        TEST_ASSERT(it != endIt);
+    }
+    TEST_ASSERT(it.depth() == 2);
+    return it;
+}
+
+TEST_CASE(test_assignment_signature) {
+    using D = recursive_directory_iterator;
+    static_assert(std::is_copy_assignable<D>::value, "");
+}
+
+TEST_CASE(test_copy_to_end_iterator)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt;
+
+    const recursive_directory_iterator from = createInterestingIterator(static_env);
+    const path entry = *from;
+
+    recursive_directory_iterator to;
+    to = from;
+    TEST_REQUIRE(to == from);
+    TEST_CHECK(*to == entry);
+    TEST_CHECK(to.options() == from.options());
+    TEST_CHECK(to.depth() == from.depth());
+    TEST_CHECK(to.recursion_pending() == from.recursion_pending());
+}
+
+
+TEST_CASE(test_copy_from_end_iterator)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator from;
+    recursive_directory_iterator to = createInterestingIterator(static_env);
+
+    to = from;
+    TEST_REQUIRE(to == from);
+    TEST_CHECK(to == recursive_directory_iterator{});
+}
+
+TEST_CASE(test_copy_valid_iterator)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt;
+
+    const recursive_directory_iterator it = createInterestingIterator(static_env);
+    const path entry = *it;
+
+    recursive_directory_iterator it2 = createDifferentInterestingIterator(static_env);
+    TEST_REQUIRE(it2                   != it);
+    TEST_CHECK(it2.options()           != it.options());
+    TEST_CHECK(it2.depth()             != it.depth());
+    TEST_CHECK(it2.recursion_pending() != it.recursion_pending());
+    TEST_CHECK(*it2                    != entry);
+
+    it2 = it;
+    TEST_REQUIRE(it2                   == it);
+    TEST_CHECK(it2.options()           == it.options());
+    TEST_CHECK(it2.depth()             == it.depth());
+    TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
+    TEST_CHECK(*it2                    == entry);
+}
+
+TEST_CASE(test_returns_reference_to_self)
+{
+    const recursive_directory_iterator it;
+    recursive_directory_iterator it2;
+    recursive_directory_iterator& ref = (it2 = it);
+    TEST_CHECK(&ref == &it2);
+}
+
+TEST_CASE(test_self_copy)
+{
+    static_test_env static_env;
+    // Create two non-equal iterators that have exactly the same state.
+    recursive_directory_iterator it = createInterestingIterator(static_env);
+    recursive_directory_iterator it2 = createInterestingIterator(static_env);
+    TEST_CHECK(it != it2);
+    TEST_CHECK(it2.options()           == it.options());
+    TEST_CHECK(it2.depth()             == it.depth());
+    TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
+    TEST_CHECK(*it2 == *it);
+
+    // perform a self-copy and check that the state still matches the
+    // other unmodified iterator.
+    recursive_directory_iterator const& cit = it;
+    it = cit;
+    TEST_CHECK(it2.options()           == it.options());
+    TEST_CHECK(it2.depth()             == it.depth());
+    TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
+    TEST_CHECK(*it2 == *it);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/ctor.pass.cpp
new file mode 100644
index 0000000..5a18c46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/ctor.pass.cpp
@@ -0,0 +1,268 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class directory_iterator
+
+//
+// explicit recursive_directory_iterator(const path& p);
+// recursive_directory_iterator(const path& p, directory_options options);
+// recursive_directory_iterator(const path& p, error_code& ec);
+// recursive_directory_iterator(const path& p, directory_options options, error_code& ec);
+
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+using RDI = recursive_directory_iterator;
+
+TEST_SUITE(recursive_directory_iterator_constructor_tests)
+
+TEST_CASE(test_constructor_signatures)
+{
+    using D = recursive_directory_iterator;
+
+    // explicit directory_iterator(path const&);
+    static_assert(!std::is_convertible<path, D>::value, "");
+    static_assert(std::is_constructible<D, path>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path>::value, "");
+
+    // directory_iterator(path const&, error_code&)
+    static_assert(std::is_constructible<D, path,
+        std::error_code&>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path,
+        std::error_code&>::value, "");
+
+    // directory_iterator(path const&, directory_options);
+    static_assert(std::is_constructible<D, path, directory_options>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path, directory_options>::value, "");
+
+    // directory_iterator(path const&, directory_options, error_code&)
+    static_assert(std::is_constructible<D, path, directory_options, std::error_code&>::value, "");
+    static_assert(!std::is_nothrow_constructible<D, path, directory_options, std::error_code&>::value, "");
+}
+
+TEST_CASE(test_construction_from_bad_path)
+{
+    static_test_env static_env;
+    std::error_code ec;
+    directory_options opts = directory_options::none;
+    const RDI endIt;
+
+    const path testPaths[] = { static_env.DNE, static_env.BadSymlink };
+    for (path const& testPath : testPaths)
+    {
+        {
+            RDI it(testPath, ec);
+            TEST_CHECK(ec);
+            TEST_CHECK(it == endIt);
+        }
+        {
+            RDI it(testPath, opts, ec);
+            TEST_CHECK(ec);
+            TEST_CHECK(it == endIt);
+        }
+        {
+            TEST_CHECK_THROW(filesystem_error, RDI(testPath));
+            TEST_CHECK_THROW(filesystem_error, RDI(testPath, opts));
+        }
+    }
+}
+
+TEST_CASE(access_denied_test_case)
+{
+    using namespace fs;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path testDir = GetWindowsInaccessibleDir();
+    if (testDir.empty())
+        TEST_UNSUPPORTED();
+#else
+    scoped_test_env env;
+    path const testDir = env.make_env_path("dir1");
+    path const testFile = testDir / "testFile";
+    env.create_dir(testDir);
+    env.create_file(testFile, 42);
+
+    // Test that we can iterator over the directory before changing the perms
+    {
+        RDI it(testDir);
+        TEST_REQUIRE(it != RDI{});
+    }
+
+    // Change the permissions so we can no longer iterate
+    permissions(testDir, perms::none);
+#endif
+
+    // Check that the construction fails when skip_permissions_denied is
+    // not given.
+    {
+        std::error_code ec;
+        RDI it(testDir, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == RDI{});
+    }
+    // Check that construction does not report an error when
+    // 'skip_permissions_denied' is given.
+    {
+        std::error_code ec;
+        RDI it(testDir, directory_options::skip_permission_denied, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it == RDI{});
+    }
+}
+
+
+TEST_CASE(access_denied_to_file_test_case)
+{
+    using namespace fs;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path testDir = GetWindowsInaccessibleDir();
+    if (testDir.empty())
+        TEST_UNSUPPORTED();
+    path const testFile = testDir / "inaccessible_file";
+#else
+    scoped_test_env env;
+    path const testFile = env.make_env_path("file1");
+    env.create_file(testFile, 42);
+
+    // Change the permissions so we can no longer iterate
+    permissions(testFile, perms::none);
+#endif
+
+    // Check that the construction fails when skip_permissions_denied is
+    // not given.
+    {
+        std::error_code ec;
+        RDI it(testFile, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == RDI{});
+    }
+    // Check that construction still fails when 'skip_permissions_denied' is given
+    // because we tried to open a file and not a directory.
+    {
+        std::error_code ec;
+        RDI it(testFile, directory_options::skip_permission_denied, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == RDI{});
+    }
+}
+
+TEST_CASE(test_open_on_empty_directory_equals_end)
+{
+    scoped_test_env env;
+    const path testDir = env.make_env_path("dir1");
+    env.create_dir(testDir);
+
+    const RDI endIt;
+    {
+        std::error_code ec;
+        RDI it(testDir, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(it == endIt);
+    }
+    {
+        RDI it(testDir);
+        TEST_CHECK(it == endIt);
+    }
+}
+
+TEST_CASE(test_open_on_directory_succeeds)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    std::set<path> dir_contents(static_env.DirIterationList.begin(),
+                                static_env.DirIterationList.end());
+    const RDI endIt{};
+
+    {
+        std::error_code ec;
+        RDI it(testDir, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it != endIt);
+        TEST_CHECK(dir_contents.count(*it));
+    }
+    {
+        RDI it(testDir);
+        TEST_CHECK(it != endIt);
+        TEST_CHECK(dir_contents.count(*it));
+    }
+}
+
+TEST_CASE(test_open_on_file_fails)
+{
+    static_test_env static_env;
+    const path testFile = static_env.File;
+    const RDI endIt{};
+    {
+        std::error_code ec;
+        RDI it(testFile, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(it == endIt);
+    }
+    {
+        TEST_CHECK_THROW(filesystem_error, RDI(testFile));
+    }
+}
+
+TEST_CASE(test_options_post_conditions)
+{
+    static_test_env static_env;
+    const path goodDir = static_env.Dir;
+    const path badDir = static_env.DNE;
+
+    {
+        std::error_code ec;
+
+        RDI it1(goodDir, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it1.options() == directory_options::none);
+
+        RDI it2(badDir, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(it2 == RDI{});
+    }
+    {
+        std::error_code ec;
+        const directory_options opts = directory_options::skip_permission_denied;
+
+        RDI it1(goodDir, opts, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(it1.options() == opts);
+
+        RDI it2(badDir, opts, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(it2 == RDI{});
+    }
+    {
+        RDI it(goodDir);
+        TEST_CHECK(it.options() == directory_options::none);
+    }
+    {
+        const directory_options opts = directory_options::follow_directory_symlink;
+        RDI it(goodDir, opts);
+        TEST_CHECK(it.options() == opts);
+    }
+}
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/depth.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/depth.pass.cpp
new file mode 100644
index 0000000..4983665
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/depth.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// int depth() const
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_depth_tests)
+
+TEST_CASE(test_depth)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const path DirDepth1 = static_env.Dir2;
+    const path DirDepth2 = static_env.Dir3;
+    const recursive_directory_iterator endIt{};
+
+    std::error_code ec;
+    recursive_directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+    TEST_CHECK(it.depth() == 0);
+
+    bool seen_d1, seen_d2;
+    seen_d1 = seen_d2 = false;
+
+    while (it != endIt) {
+        const path entry = *it;
+        const path parent = entry.parent_path();
+        if (parent == testDir) {
+            TEST_CHECK(it.depth() == 0);
+        } else if (parent == DirDepth1) {
+            TEST_CHECK(it.depth() == 1);
+            seen_d1 = true;
+        } else if (parent == DirDepth2) {
+            TEST_CHECK(it.depth() == 2);
+            seen_d2 = true;
+        } else {
+            TEST_CHECK(!"Unexpected depth while iterating over static env");
+        }
+        ++it;
+    }
+    TEST_REQUIRE(seen_d1 && seen_d2);
+    TEST_CHECK(it == endIt);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/disable_recursion_pending.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/disable_recursion_pending.pass.cpp
new file mode 100644
index 0000000..e9dc964
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/disable_recursion_pending.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// void disable_recursion_pending();
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_disable_recursion_pending_tests)
+
+// NOTE: The main semantics of disable_recursion_pending are tested
+// in the 'recursion_pending()' tests.
+TEST_CASE(basic_test)
+{
+    static_test_env static_env;
+    recursive_directory_iterator it(static_env.Dir);
+    TEST_REQUIRE(it.recursion_pending() == true);
+    it.disable_recursion_pending();
+    TEST_CHECK(it.recursion_pending() == false);
+    it.disable_recursion_pending();
+    TEST_CHECK(it.recursion_pending() == false);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/increment.pass.cpp
new file mode 100644
index 0000000..4b8390e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/increment.pass.cpp
@@ -0,0 +1,499 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// recursive_directory_iterator& operator++();
+// recursive_directory_iterator& increment(error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_increment_tests)
+
+TEST_CASE(test_increment_signatures)
+{
+    recursive_directory_iterator d; ((void)d);
+    std::error_code ec; ((void)ec);
+
+    ASSERT_SAME_TYPE(decltype(++d), recursive_directory_iterator&);
+    ASSERT_NOT_NOEXCEPT(++d);
+
+    ASSERT_SAME_TYPE(decltype(d.increment(ec)), recursive_directory_iterator&);
+    ASSERT_NOT_NOEXCEPT(d.increment(ec));
+}
+
+TEST_CASE(test_prefix_increment)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const std::set<path> dir_contents(static_env.RecDirIterationList.begin(),
+                                      static_env.RecDirIterationList.end());
+    const recursive_directory_iterator endIt{};
+
+    std::error_code ec;
+    recursive_directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        recursive_directory_iterator& it_ref = ++it;
+        TEST_CHECK(&it_ref == &it);
+    }
+
+    TEST_CHECK(it == endIt);
+}
+
+TEST_CASE(test_postfix_increment)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const std::set<path> dir_contents(static_env.RecDirIterationList.begin(),
+                                      static_env.RecDirIterationList.end());
+    const recursive_directory_iterator endIt{};
+
+    std::error_code ec;
+    recursive_directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        const path entry2 = *it++;
+        TEST_CHECK(entry2 == entry);
+    }
+    TEST_CHECK(it == endIt);
+}
+
+
+TEST_CASE(test_increment_method)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const std::set<path> dir_contents(static_env.RecDirIterationList.begin(),
+                                      static_env.RecDirIterationList.end());
+    const recursive_directory_iterator endIt{};
+
+    std::error_code ec;
+    recursive_directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        recursive_directory_iterator& it_ref = it.increment(ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(&it_ref == &it);
+    }
+
+    TEST_CHECK(it == endIt);
+}
+
+TEST_CASE(test_follow_symlinks)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    auto const& IterList = static_env.RecDirFollowSymlinksIterationList;
+
+    const std::set<path> dir_contents(IterList.begin(), IterList.end());
+    const recursive_directory_iterator endIt{};
+
+    std::error_code ec;
+    recursive_directory_iterator it(testDir,
+                              directory_options::follow_directory_symlink, ec);
+    TEST_REQUIRE(!ec);
+
+    std::set<path> unseen_entries = dir_contents;
+    while (!unseen_entries.empty()) {
+        TEST_REQUIRE(it != endIt);
+        const path entry = *it;
+
+        TEST_REQUIRE(unseen_entries.erase(entry) == 1);
+        recursive_directory_iterator& it_ref = it.increment(ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(&it_ref == &it);
+    }
+    TEST_CHECK(it == endIt);
+}
+
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+TEST_CASE(access_denied_on_recursion_test_case)
+{
+    using namespace fs;
+    scoped_test_env env;
+    const path testFiles[] = {
+        env.create_dir("dir1"),
+        env.create_dir("dir1/dir2"),
+        env.create_file("dir1/dir2/file1"),
+        env.create_file("dir1/file2")
+    };
+    const path startDir = testFiles[0];
+    const path permDeniedDir = testFiles[1];
+    const path otherFile = testFiles[3];
+    auto SkipEPerm = directory_options::skip_permission_denied;
+
+    // Change the permissions so we can no longer iterate
+    permissions(permDeniedDir, perms::none);
+
+    const recursive_directory_iterator endIt;
+
+    // Test that recursion resulting in a "EACCESS" error is not ignored
+    // by default.
+    {
+        std::error_code ec = GetTestEC();
+        recursive_directory_iterator it(startDir, ec);
+        TEST_REQUIRE(ec != GetTestEC());
+        TEST_REQUIRE(!ec);
+        while (it != endIt && it->path() != permDeniedDir)
+            ++it;
+        TEST_REQUIRE(it != endIt);
+        TEST_REQUIRE(*it == permDeniedDir);
+
+        it.increment(ec);
+        TEST_CHECK(ec);
+        TEST_CHECK(it == endIt);
+    }
+    // Same as above but test operator++().
+    {
+        std::error_code ec = GetTestEC();
+        recursive_directory_iterator it(startDir, ec);
+        TEST_REQUIRE(!ec);
+        while (it != endIt && it->path() != permDeniedDir)
+            ++it;
+        TEST_REQUIRE(it != endIt);
+        TEST_REQUIRE(*it == permDeniedDir);
+
+        TEST_REQUIRE_THROW(filesystem_error, ++it);
+    }
+    // Test that recursion resulting in a "EACCESS" error is ignored when the
+    // correct options are given to the constructor.
+    {
+        std::error_code ec = GetTestEC();
+        recursive_directory_iterator it(startDir, SkipEPerm, ec);
+        TEST_REQUIRE(!ec);
+        TEST_REQUIRE(it != endIt);
+
+        bool seenOtherFile = false;
+        if (*it == otherFile) {
+            ++it;
+            seenOtherFile = true;
+            TEST_REQUIRE (it != endIt);
+        }
+        TEST_REQUIRE(*it == permDeniedDir);
+
+        ec = GetTestEC();
+        it.increment(ec);
+        TEST_REQUIRE(!ec);
+
+        if (seenOtherFile) {
+            TEST_CHECK(it == endIt);
+        } else {
+            TEST_CHECK(it != endIt);
+            TEST_CHECK(*it == otherFile);
+        }
+    }
+    // Test that construction resulting in a "EACCESS" error is not ignored
+    // by default.
+    {
+        std::error_code ec;
+        recursive_directory_iterator it(permDeniedDir, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(it == endIt);
+    }
+    // Same as above but testing the throwing constructors
+    {
+        TEST_REQUIRE_THROW(filesystem_error,
+                           recursive_directory_iterator(permDeniedDir));
+    }
+    // Test that construction resulting in a "EACCESS" error constructs the
+    // end iterator when the correct options are given.
+    {
+        std::error_code ec = GetTestEC();
+        recursive_directory_iterator it(permDeniedDir, SkipEPerm, ec);
+        TEST_REQUIRE(!ec);
+        TEST_REQUIRE(it == endIt);
+    }
+}
+
+// See llvm.org/PR35078
+TEST_CASE(test_PR35078)
+{
+  using namespace fs;
+    scoped_test_env env;
+    const path testFiles[] = {
+        env.create_dir("dir1"),
+        env.create_dir("dir1/dir2"),
+        env.create_dir("dir1/dir2/dir3"),
+        env.create_file("dir1/file1"),
+        env.create_file("dir1/dir2/dir3/file2")
+    };
+    const path startDir = testFiles[0];
+    const path permDeniedDir = testFiles[1];
+    const path nestedDir = testFiles[2];
+    const path nestedFile = testFiles[3];
+
+    // Change the permissions so we can no longer iterate
+    permissions(permDeniedDir,
+                perms::group_exec|perms::owner_exec|perms::others_exec,
+                perm_options::remove);
+
+    const std::errc eacess = std::errc::permission_denied;
+    std::error_code ec = GetTestEC();
+
+    const recursive_directory_iterator endIt;
+
+    auto SetupState = [&](bool AllowEAccess, bool& SeenFile3) {
+      SeenFile3 = false;
+      auto Opts = AllowEAccess ? directory_options::skip_permission_denied
+          : directory_options::none;
+      recursive_directory_iterator it(startDir, Opts, ec);
+      while (!ec && it != endIt && *it != nestedDir) {
+        if (*it == nestedFile)
+          SeenFile3 = true;
+        it.increment(ec);
+      }
+      return it;
+    };
+
+    {
+      bool SeenNestedFile = false;
+      recursive_directory_iterator it = SetupState(false, SeenNestedFile);
+      TEST_REQUIRE(it != endIt);
+      TEST_REQUIRE(*it == nestedDir);
+      ec = GetTestEC();
+      it.increment(ec);
+      TEST_CHECK(ec);
+      TEST_CHECK(ErrorIs(ec, eacess));
+      TEST_CHECK(it == endIt);
+    }
+    {
+      bool SeenNestedFile = false;
+      recursive_directory_iterator it = SetupState(true, SeenNestedFile);
+      TEST_REQUIRE(it != endIt);
+      TEST_REQUIRE(*it == nestedDir);
+      ec = GetTestEC();
+      it.increment(ec);
+      TEST_CHECK(!ec);
+      if (SeenNestedFile) {
+        TEST_CHECK(it == endIt);
+      } else {
+        TEST_REQUIRE(it != endIt);
+        TEST_CHECK(*it == nestedFile);
+      }
+    }
+    {
+      bool SeenNestedFile = false;
+      recursive_directory_iterator it = SetupState(false, SeenNestedFile);
+      TEST_REQUIRE(it != endIt);
+      TEST_REQUIRE(*it == nestedDir);
+
+      ExceptionChecker Checker(std::errc::permission_denied,
+                               "recursive_directory_iterator::operator++()",
+                               format_string("attempting recursion into \"%s\"",
+                                             nestedDir.string().c_str()));
+      TEST_CHECK_THROW_RESULT(filesystem_error, Checker, ++it);
+    }
+}
+
+
+// See llvm.org/PR35078
+TEST_CASE(test_PR35078_with_symlink)
+{
+  using namespace fs;
+    scoped_test_env env;
+    const path testFiles[] = {
+        env.create_dir("dir1"),
+        env.create_file("dir1/file1"),
+        env.create_dir("sym_dir"),
+        env.create_dir("sym_dir/nested_sym_dir"),
+        env.create_directory_symlink("sym_dir/nested_sym_dir", "dir1/dir2"),
+        env.create_dir("sym_dir/dir1"),
+        env.create_dir("sym_dir/dir1/dir2"),
+
+    };
+   // const unsigned TestFilesSize = sizeof(testFiles) / sizeof(testFiles[0]);
+    const path startDir = testFiles[0];
+    const path nestedFile = testFiles[1];
+    const path permDeniedDir = testFiles[2];
+    const path symDir = testFiles[4];
+
+    // Change the permissions so we can no longer iterate
+    permissions(permDeniedDir,
+                perms::group_exec|perms::owner_exec|perms::others_exec,
+                perm_options::remove);
+
+    const std::errc eacess = std::errc::permission_denied;
+    std::error_code ec = GetTestEC();
+
+    const recursive_directory_iterator endIt;
+
+    auto SetupState = [&](bool AllowEAccess, bool FollowSym, bool& SeenFile3) {
+      SeenFile3 = false;
+      auto Opts = AllowEAccess ? directory_options::skip_permission_denied
+          : directory_options::none;
+      if (FollowSym)
+        Opts |= directory_options::follow_directory_symlink;
+      recursive_directory_iterator it(startDir, Opts, ec);
+      while (!ec && it != endIt && *it != symDir) {
+        if (*it == nestedFile)
+          SeenFile3 = true;
+        it.increment(ec);
+      }
+      return it;
+    };
+
+    struct {
+      bool SkipPermDenied;
+      bool FollowSymlinks;
+      bool ExpectSuccess;
+    } TestCases[]  = {
+        // Passing cases
+        {false, false, true}, {true, true, true}, {true, false, true},
+        // Failing cases
+        {false, true, false}
+    };
+    for (auto TC : TestCases) {
+      bool SeenNestedFile = false;
+      recursive_directory_iterator it = SetupState(TC.SkipPermDenied,
+                                                   TC.FollowSymlinks,
+                                                   SeenNestedFile);
+      TEST_REQUIRE(!ec);
+      TEST_REQUIRE(it != endIt);
+      TEST_REQUIRE(*it == symDir);
+      ec = GetTestEC();
+      it.increment(ec);
+      if (TC.ExpectSuccess) {
+        TEST_CHECK(!ec);
+        if (SeenNestedFile) {
+          TEST_CHECK(it == endIt);
+        } else {
+          TEST_REQUIRE(it != endIt);
+          TEST_CHECK(*it == nestedFile);
+        }
+      } else {
+        TEST_CHECK(ec);
+        TEST_CHECK(ErrorIs(ec, eacess));
+        TEST_CHECK(it == endIt);
+      }
+    }
+}
+
+
+// See llvm.org/PR35078
+TEST_CASE(test_PR35078_with_symlink_file)
+{
+  using namespace fs;
+    scoped_test_env env;
+    const path testFiles[] = {
+        env.create_dir("dir1"),
+        env.create_dir("dir1/dir2"),
+        env.create_file("dir1/file2"),
+        env.create_dir("sym_dir"),
+        env.create_dir("sym_dir/sdir1"),
+        env.create_file("sym_dir/sdir1/sfile1"),
+        env.create_symlink("sym_dir/sdir1/sfile1", "dir1/dir2/file1")
+    };
+    const unsigned TestFilesSize = sizeof(testFiles) / sizeof(testFiles[0]);
+    const path startDir = testFiles[0];
+    const path nestedDir = testFiles[1];
+    const path nestedFile = testFiles[2];
+    const path permDeniedDir = testFiles[3];
+    const path symFile = testFiles[TestFilesSize - 1];
+
+    // Change the permissions so we can no longer iterate
+    permissions(permDeniedDir,
+                perms::group_exec|perms::owner_exec|perms::others_exec,
+                perm_options::remove);
+
+    const std::errc eacess = std::errc::permission_denied;
+    std::error_code ec = GetTestEC();
+
+    const recursive_directory_iterator EndIt;
+
+    auto SetupState = [&](bool AllowEAccess, bool FollowSym, bool& SeenNestedFile) {
+      SeenNestedFile = false;
+      auto Opts = AllowEAccess ? directory_options::skip_permission_denied
+          : directory_options::none;
+      if (FollowSym)
+        Opts |= directory_options::follow_directory_symlink;
+      recursive_directory_iterator it(startDir, Opts, ec);
+      while (!ec && it != EndIt && *it != nestedDir) {
+        if (*it == nestedFile)
+          SeenNestedFile = true;
+        it.increment(ec);
+      }
+      return it;
+    };
+
+    struct {
+      bool SkipPermDenied;
+      bool FollowSymlinks;
+      bool ExpectSuccess;
+    } TestCases[]  = {
+        // Passing cases
+        {false, false, true}, {true, true, true}, {true, false, true},
+        // Failing cases
+        {false, true, false}
+    };
+    for (auto TC : TestCases){
+      bool SeenNestedFile = false;
+      recursive_directory_iterator it = SetupState(TC.SkipPermDenied,
+                                                   TC.FollowSymlinks,
+                                                   SeenNestedFile);
+      TEST_REQUIRE(!ec);
+      TEST_REQUIRE(it != EndIt);
+      TEST_REQUIRE(*it == nestedDir);
+      ec = GetTestEC();
+      it.increment(ec);
+      TEST_REQUIRE(it != EndIt);
+      TEST_CHECK(!ec);
+      TEST_CHECK(*it == symFile);
+      ec = GetTestEC();
+      it.increment(ec);
+      if (TC.ExpectSuccess) {
+        if (!SeenNestedFile) {
+          TEST_CHECK(!ec);
+          TEST_REQUIRE(it != EndIt);
+          TEST_CHECK(*it == nestedFile);
+          ec = GetTestEC();
+          it.increment(ec);
+        }
+        TEST_CHECK(!ec);
+        TEST_CHECK(it == EndIt);
+      } else {
+        TEST_CHECK(ec);
+        TEST_CHECK(ErrorIs(ec, eacess));
+        TEST_CHECK(it == EndIt);
+      }
+    }
+}
+#endif
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move.pass.cpp
new file mode 100644
index 0000000..7dcc47d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// recursive_directory_iterator(recursive_directory_iterator&&) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_move_construct_tests)
+
+TEST_CASE(test_constructor_signature)
+{
+    using D = recursive_directory_iterator;
+    static_assert(std::is_nothrow_move_constructible<D>::value, "");
+}
+
+TEST_CASE(test_move_end_iterator)
+{
+    const recursive_directory_iterator endIt;
+    recursive_directory_iterator endIt2{};
+
+    recursive_directory_iterator it(std::move(endIt2));
+    TEST_CHECK(it == endIt);
+    TEST_CHECK(endIt2 == endIt);
+}
+
+TEST_CASE(test_move_valid_iterator)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    const recursive_directory_iterator endIt{};
+
+    // build 'it' up with "interesting" non-default state so we can test
+    // that it gets copied. We want to get 'it' into a state such that:
+    //  it.options() != directory_options::none
+    //  it.depth() != 0
+    //  it.recursion_pending() != true
+    const directory_options opts = directory_options::skip_permission_denied;
+    recursive_directory_iterator it(testDir, opts);
+    TEST_REQUIRE(it != endIt);
+    while (it.depth() == 0) {
+        ++it;
+        TEST_REQUIRE(it != endIt);
+    }
+    it.disable_recursion_pending();
+    TEST_CHECK(it.options() == opts);
+    TEST_CHECK(it.depth() == 1);
+    TEST_CHECK(it.recursion_pending() == false);
+    const path entry = *it;
+
+    // OPERATION UNDER TEST //
+    const recursive_directory_iterator it2(std::move(it));
+    // ------------------- //
+
+    TEST_REQUIRE(it2 != endIt);
+    TEST_CHECK(*it2 == entry);
+    TEST_CHECK(it2.depth() == 1);
+    TEST_CHECK(it2.recursion_pending() == false);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move_assign.pass.cpp
new file mode 100644
index 0000000..abe5dd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/move_assign.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// recursive_directory_iterator& operator=(recursive_directory_iterator const&);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+// The filesystem specification explicitly allows for self-move on
+// the directory iterators. Turn off this warning so we can test it.
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wself-move")
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_move_assign_tests)
+
+recursive_directory_iterator createInterestingIterator(const static_test_env &static_env)
+    // Create an "interesting" iterator where all fields are
+    // in a non-default state. The returned 'it' is in a
+    // state such that:
+    //   it.options() == directory_options::skip_permission_denied
+    //   it.depth() == 1
+    //   it.recursion_pending() == true
+{
+    const path testDir = static_env.Dir;
+    const recursive_directory_iterator endIt;
+    recursive_directory_iterator it(testDir,
+                                    directory_options::skip_permission_denied);
+    TEST_ASSERT(it != endIt);
+    while (it.depth() != 1) {
+        ++it;
+        TEST_ASSERT(it != endIt);
+    }
+    TEST_ASSERT(it.depth() == 1);
+    it.disable_recursion_pending();
+    return it;
+}
+
+recursive_directory_iterator createDifferentInterestingIterator(const static_test_env &static_env)
+    // Create an "interesting" iterator where all fields are
+    // in a non-default state. The returned 'it' is in a
+    // state such that:
+    //   it.options() == directory_options::follow_directory_symlink
+    //   it.depth() == 2
+    //   it.recursion_pending() == false
+{
+    const path testDir = static_env.Dir;
+    const recursive_directory_iterator endIt;
+    recursive_directory_iterator it(testDir,
+                                    directory_options::follow_directory_symlink);
+    TEST_ASSERT(it != endIt);
+    while (it.depth() != 2) {
+        ++it;
+        TEST_ASSERT(it != endIt);
+    }
+    TEST_ASSERT(it.depth() == 2);
+    return it;
+}
+
+
+TEST_CASE(test_assignment_signature)
+{
+    using D = recursive_directory_iterator;
+    static_assert(std::is_nothrow_move_assignable<D>::value, "");
+}
+
+
+TEST_CASE(test_move_to_end_iterator)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt;
+
+    recursive_directory_iterator from = createInterestingIterator(static_env);
+    const recursive_directory_iterator from_copy(from);
+    const path entry = *from;
+
+    recursive_directory_iterator to;
+    to = std::move(from);
+    TEST_REQUIRE(to != endIt);
+    TEST_CHECK(*to == entry);
+    TEST_CHECK(to.options() == from_copy.options());
+    TEST_CHECK(to.depth() == from_copy.depth());
+    TEST_CHECK(to.recursion_pending() == from_copy.recursion_pending());
+    TEST_CHECK(from == endIt || from == to);
+}
+
+
+TEST_CASE(test_move_from_end_iterator)
+{
+    static_test_env static_env;
+    recursive_directory_iterator from;
+    recursive_directory_iterator to = createInterestingIterator(static_env);
+
+    to = std::move(from);
+    TEST_REQUIRE(to == from);
+    TEST_CHECK(to == recursive_directory_iterator{});
+}
+
+TEST_CASE(test_move_valid_iterator)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt;
+
+    recursive_directory_iterator it = createInterestingIterator(static_env);
+    const recursive_directory_iterator it_copy(it);
+    const path entry = *it;
+
+    recursive_directory_iterator it2 = createDifferentInterestingIterator(static_env);
+    const recursive_directory_iterator it2_copy(it2);
+    TEST_REQUIRE(it2 != it);
+    TEST_CHECK(it2.options() != it.options());
+    TEST_CHECK(it2.depth() != it.depth());
+    TEST_CHECK(it2.recursion_pending() != it.recursion_pending());
+    TEST_CHECK(*it2 != entry);
+
+    it2 = std::move(it);
+    TEST_REQUIRE(it2 != it2_copy && it2 != endIt);
+    TEST_CHECK(it2.options() == it_copy.options());
+    TEST_CHECK(it2.depth() == it_copy.depth());
+    TEST_CHECK(it2.recursion_pending() == it_copy.recursion_pending());
+    TEST_CHECK(*it2 == entry);
+    TEST_CHECK(it == endIt || it == it2);
+}
+
+TEST_CASE(test_returns_reference_to_self)
+{
+    recursive_directory_iterator it;
+    recursive_directory_iterator it2;
+    recursive_directory_iterator& ref = (it2 = std::move(it));
+    TEST_CHECK(&ref == &it2);
+}
+
+TEST_CASE(test_self_move)
+{
+    static_test_env static_env;
+    // Create two non-equal iterators that have exactly the same state.
+    recursive_directory_iterator it = createInterestingIterator(static_env);
+    recursive_directory_iterator it2 = createInterestingIterator(static_env);
+    TEST_CHECK(it != it2);
+    TEST_CHECK(it2.options()           == it.options());
+    TEST_CHECK(it2.depth()             == it.depth());
+    TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
+    TEST_CHECK(*it2 == *it);
+
+    it = std::move(it);
+    TEST_CHECK(it2.options()           == it.options());
+    TEST_CHECK(it2.depth()             == it.depth());
+    TEST_CHECK(it2.recursion_pending() == it.recursion_pending());
+    TEST_CHECK(*it2 == *it);
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/pop.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/pop.pass.cpp
new file mode 100644
index 0000000..40b09f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/pop.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// void pop();
+// void pop(error_code& ec);
+
+#include "filesystem_include.h"
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_pop_tests)
+
+TEST_CASE(signature_tests)
+{
+    recursive_directory_iterator it{}; ((void)it);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(it.pop());
+    ASSERT_NOT_NOEXCEPT(it.pop(ec)); // may require allocation or other things
+}
+
+// NOTE: Since the order of iteration is unspecified we use a list of
+// seen files at each depth to determine the new depth after a 'pop()' operation.
+TEST_CASE(test_depth)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt{};
+
+    auto& DE0 = static_env.DirIterationList;
+    std::set<path> notSeenDepth0(DE0.begin(), DE0.end());
+
+    auto& DE1 = static_env.DirIterationListDepth1;
+    std::set<path> notSeenDepth1(DE1.begin(), DE1.end());
+
+    std::error_code ec;
+    recursive_directory_iterator it(static_env.Dir, ec);
+    TEST_REQUIRE(it != endIt);
+    TEST_CHECK(it.depth() == 0);
+
+    while (it.depth() != 2) {
+        if (it.depth() == 0)
+            notSeenDepth0.erase(it->path());
+        else
+            notSeenDepth1.erase(it->path());
+        ++it;
+        TEST_REQUIRE(it != endIt);
+    }
+
+    while (true) {
+        auto set_ec = std::make_error_code(std::errc::address_in_use);
+        it.pop(set_ec);
+        TEST_REQUIRE(!set_ec);
+
+        if (it == endIt) {
+            // We must have seen every entry at depth 0 and 1.
+            TEST_REQUIRE(notSeenDepth0.empty() && notSeenDepth1.empty());
+            break;
+        }
+        else if (it.depth() == 1) {
+            // If we popped to depth 1 then there must be unseen entries
+            // at this level.
+            TEST_REQUIRE(!notSeenDepth1.empty());
+            TEST_CHECK(notSeenDepth1.count(it->path()));
+            notSeenDepth1.clear();
+        }
+        else if (it.depth() == 0) {
+            // If we popped to depth 0 there must be unseen entries at this
+            // level. There should also be no unseen entries at depth 1.
+            TEST_REQUIRE(!notSeenDepth0.empty());
+            TEST_REQUIRE(notSeenDepth1.empty());
+            TEST_CHECK(notSeenDepth0.count(it->path()));
+            notSeenDepth0.clear();
+        }
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/recursion_pending.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/recursion_pending.pass.cpp
new file mode 100644
index 0000000..82c82c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.members/recursion_pending.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// bool recursion_pending() const;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_recursion_pending_tests)
+
+TEST_CASE(initial_value_test)
+{
+    static_test_env static_env;
+    recursive_directory_iterator it(static_env.Dir);
+    TEST_REQUIRE(it.recursion_pending() == true);
+}
+
+TEST_CASE(value_after_copy_construction_and_assignment_test)
+{
+    static_test_env static_env;
+    recursive_directory_iterator rec_pending_it(static_env.Dir);
+    recursive_directory_iterator no_rec_pending_it(static_env.Dir);
+    no_rec_pending_it.disable_recursion_pending();
+
+    { // copy construction
+        recursive_directory_iterator it(rec_pending_it);
+        TEST_CHECK(it.recursion_pending() == true);
+        it.disable_recursion_pending();
+        TEST_REQUIRE(rec_pending_it.recursion_pending() == true);
+
+        recursive_directory_iterator it2(no_rec_pending_it);
+        TEST_CHECK(it2.recursion_pending() == false);
+    }
+    { // copy assignment
+        recursive_directory_iterator it(static_env.Dir);
+        it.disable_recursion_pending();
+        it = rec_pending_it;
+        TEST_CHECK(it.recursion_pending() == true);
+        it.disable_recursion_pending();
+        TEST_REQUIRE(rec_pending_it.recursion_pending() == true);
+
+        recursive_directory_iterator it2(static_env.Dir);
+        it2 = no_rec_pending_it;
+        TEST_CHECK(it2.recursion_pending() == false);
+    }
+    TEST_CHECK(rec_pending_it.recursion_pending() == true);
+    TEST_CHECK(no_rec_pending_it.recursion_pending() == false);
+}
+
+
+TEST_CASE(value_after_move_construction_and_assignment_test)
+{
+    static_test_env static_env;
+    recursive_directory_iterator rec_pending_it(static_env.Dir);
+    recursive_directory_iterator no_rec_pending_it(static_env.Dir);
+    no_rec_pending_it.disable_recursion_pending();
+
+    { // move construction
+        recursive_directory_iterator it_cp(rec_pending_it);
+        recursive_directory_iterator it(std::move(it_cp));
+        TEST_CHECK(it.recursion_pending() == true);
+
+        recursive_directory_iterator it_cp2(no_rec_pending_it);
+        recursive_directory_iterator it2(std::move(it_cp2));
+        TEST_CHECK(it2.recursion_pending() == false);
+    }
+    { // copy assignment
+        recursive_directory_iterator it(static_env.Dir);
+        it.disable_recursion_pending();
+        recursive_directory_iterator it_cp(rec_pending_it);
+        it = std::move(it_cp);
+        TEST_CHECK(it.recursion_pending() == true);
+
+        recursive_directory_iterator it2(static_env.Dir);
+        recursive_directory_iterator it_cp2(no_rec_pending_it);
+        it2 = std::move(it_cp2);
+        TEST_CHECK(it2.recursion_pending() == false);
+    }
+    TEST_CHECK(rec_pending_it.recursion_pending() == true);
+    TEST_CHECK(no_rec_pending_it.recursion_pending() == false);
+}
+
+TEST_CASE(increment_resets_value)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt;
+    {
+        recursive_directory_iterator it(static_env.Dir);
+        it.disable_recursion_pending();
+        TEST_CHECK(it.recursion_pending() == false);
+        ++it;
+        TEST_CHECK(it.recursion_pending() == true);
+        TEST_CHECK(it.depth() == 0);
+    }
+    {
+        recursive_directory_iterator it(static_env.Dir);
+        it.disable_recursion_pending();
+        TEST_CHECK(it.recursion_pending() == false);
+        it++;
+        TEST_CHECK(it.recursion_pending() == true);
+        TEST_CHECK(it.depth() == 0);
+    }
+    {
+        recursive_directory_iterator it(static_env.Dir);
+        it.disable_recursion_pending();
+        TEST_CHECK(it.recursion_pending() == false);
+        std::error_code ec;
+        it.increment(ec);
+        TEST_CHECK(it.recursion_pending() == true);
+        TEST_CHECK(it.depth() == 0);
+    }
+}
+
+TEST_CASE(pop_does_not_reset_value)
+{
+    static_test_env static_env;
+    const recursive_directory_iterator endIt;
+
+    auto& DE0 = static_env.DirIterationList;
+    std::set<path> notSeenDepth0(DE0.begin(), DE0.end());
+
+    recursive_directory_iterator it(static_env.Dir);
+    TEST_REQUIRE(it != endIt);
+
+    while (it.depth() == 0) {
+        notSeenDepth0.erase(it->path());
+        ++it;
+        TEST_REQUIRE(it != endIt);
+    }
+    TEST_REQUIRE(it.depth() == 1);
+    it.disable_recursion_pending();
+    it.pop();
+    // Since the order of iteration is unspecified the pop() could result
+    // in the end iterator. When this is the case it is undefined behavior
+    // to call recursion_pending().
+    if (it == endIt) {
+        TEST_CHECK(notSeenDepth0.empty());
+#if defined(_LIBCPP_VERSION)
+        TEST_CHECK(it.recursion_pending() == false);
+#endif
+    } else {
+        TEST_CHECK(! notSeenDepth0.empty());
+        TEST_CHECK(it.recursion_pending() == false);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.nonmembers/begin_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.nonmembers/begin_end.pass.cpp
new file mode 100644
index 0000000..104e419
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/class.rec.dir.itr/rec.dir.itr.nonmembers/begin_end.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class recursive_directory_iterator
+
+// recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept;
+// recursive_directory_iterator end(recursive_directory_iterator iter) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <set>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(recursive_directory_iterator_begin_end_tests)
+
+TEST_CASE(test_function_signatures)
+{
+    recursive_directory_iterator d;
+
+    ASSERT_SAME_TYPE(decltype(begin(d)), recursive_directory_iterator);
+    ASSERT_SAME_TYPE(decltype(begin(std::move(d))), recursive_directory_iterator);
+    ASSERT_NOEXCEPT(begin(d));
+    ASSERT_NOEXCEPT(begin(std::move(d)));
+
+    ASSERT_SAME_TYPE(decltype(end(d)), recursive_directory_iterator);
+    ASSERT_SAME_TYPE(decltype(end(std::move(d))), recursive_directory_iterator);
+    ASSERT_NOEXCEPT(end(d));
+    ASSERT_NOEXCEPT(end(std::move(d)));
+}
+
+TEST_CASE(test_ranged_for_loop)
+{
+    static_test_env static_env;
+    const path testDir = static_env.Dir;
+    std::set<path> dir_contents(static_env.RecDirIterationList.begin(),
+                                static_env.RecDirIterationList.end());
+
+    std::error_code ec;
+    recursive_directory_iterator it(testDir, ec);
+    TEST_REQUIRE(!ec);
+
+    for (auto& elem : it) {
+        TEST_CHECK(dir_contents.erase(elem) == 1);
+    }
+    TEST_CHECK(dir_contents.empty());
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/check_bitmask_types.h b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/check_bitmask_types.h
new file mode 100644
index 0000000..d95378d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/check_bitmask_types.h
@@ -0,0 +1,75 @@
+#ifndef TEST_BITMASK_TYPE_H
+#define TEST_BITMASK_TYPE_H
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class EnumType, EnumType Val1, EnumType Val2,
+          class UT = typename std::underlying_type<EnumType>::type,
+          UT UVal1 = static_cast<UT>(Val1),
+          UT UVal2 = static_cast<UT>(Val2),
+          UT UZero = static_cast<UT>(0),
+          EnumType Zero = static_cast<EnumType>(0)
+        >
+struct check_bitmask_type {
+
+  static constexpr UT dcast(EnumType e) { return static_cast<UT>(e); }
+  static constexpr UT unpromote(decltype((~UZero)) promoted) { return static_cast<UT>(promoted); }
+  // We need two values that are non-zero and share at least one bit.
+  static_assert(Val1 != Zero && Val2 != Zero, "");
+  static_assert(Val1 != Val2, "");
+  static_assert((UVal1 & UVal2) == 0, "");
+
+
+  static bool check()
+  {
+    {
+      EnumType ValRef = Val1;
+      ASSERT_SAME_TYPE(EnumType, decltype(Val1 & Val2));
+      ASSERT_SAME_TYPE(EnumType, decltype(Val1 | Val2));
+      ASSERT_SAME_TYPE(EnumType, decltype(Val1 ^ Val2));
+      ASSERT_SAME_TYPE(EnumType, decltype((~Val1)));
+      ASSERT_SAME_TYPE(EnumType&, decltype(ValRef &= Val2));
+      ASSERT_SAME_TYPE(EnumType&, decltype(ValRef |= Val2));
+      ASSERT_SAME_TYPE(EnumType&, decltype(ValRef ^= Val2));
+    }
+
+    static_assert((Val1 & Zero) == Zero, "");
+    static_assert((Val1 & Val1) == Val1, "");
+    static_assert(dcast(Val1 & Val2) == (UVal1 & UVal2), "");
+
+    static_assert((Val1 | Zero) == Val1, "");
+    static_assert(dcast(Val1 | Val2) == (UVal1 | UVal2), "");
+
+    static_assert((Val1 ^ Zero) == Val1, "");
+    static_assert(dcast(Val1 ^ Val2) == (UVal1 ^ UVal2), "");
+
+    static_assert(dcast(~Zero) == unpromote(~UZero), "");
+    static_assert(dcast(~Val1) == unpromote(~UVal1), "");
+
+    {
+      EnumType e = Val1;
+      EnumType& eref = (e &= Val2);
+      assert(&eref == &e);
+      assert(dcast(eref) == (UVal1 & UVal2));
+    }
+    {
+      EnumType e = Val1;
+      EnumType& eref = (e |= Val2);
+      assert(&eref == &e);
+      assert(dcast(eref) == (UVal1 | UVal2));
+    }
+    {
+      EnumType e = Val1;
+      EnumType& eref = (e ^= Val2);
+      assert(&eref == &e);
+      assert(dcast(eref) == (UVal1 ^ UVal2));
+    }
+    return true;
+  }
+};
+
+#endif // TEST_BITMASK_TYPE
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.copy_options.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.copy_options.pass.cpp
new file mode 100644
index 0000000..52903ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.copy_options.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// enum class copy_options;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "check_bitmask_types.h"
+#include "test_macros.h"
+
+
+constexpr fs::copy_options ME(int val) { return static_cast<fs::copy_options>(val); }
+
+int main(int, char**) {
+  typedef fs::copy_options E;
+  static_assert(std::is_enum<E>::value, "");
+
+  // Check that E is a scoped enum by checking for conversions.
+  typedef std::underlying_type<E>::type UT;
+  static_assert(!std::is_convertible<E, UT>::value, "");
+
+  LIBCPP_ONLY(static_assert(std::is_same<UT, unsigned short>::value, "")); // Implementation detail
+
+  typedef check_bitmask_type<E, E::skip_existing, E::update_existing> BitmaskTester;
+  assert(BitmaskTester::check());
+
+  // The standard doesn't specify the numeric values of the enum.
+  LIBCPP_STATIC_ASSERT(
+          E::none == ME(0),
+        "Expected enumeration values do not match");
+  // Option group for copy_file
+  LIBCPP_STATIC_ASSERT(
+          E::skip_existing      == ME(1) &&
+          E::overwrite_existing == ME(2) &&
+          E::update_existing    == ME(4),
+        "Expected enumeration values do not match");
+  // Option group for copy on directories
+  LIBCPP_STATIC_ASSERT(
+          E::recursive == ME(8),
+        "Expected enumeration values do not match");
+  // Option group for copy on symlinks
+  LIBCPP_STATIC_ASSERT(
+          E::copy_symlinks == ME(16) &&
+          E::skip_symlinks == ME(32),
+        "Expected enumeration values do not match");
+  // Option group for changing form of copy
+  LIBCPP_STATIC_ASSERT(
+          E::directories_only    == ME(64) &&
+          E::create_symlinks     == ME(128) &&
+          E::create_hard_links   == ME(256),
+        "Expected enumeration values do not match");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.directory_options.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.directory_options.pass.cpp
new file mode 100644
index 0000000..a9eee79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.directory_options.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// enum class directory_options;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+#include <sys/stat.h>
+
+#include "test_macros.h"
+#include "check_bitmask_types.h"
+
+
+constexpr fs::directory_options ME(int val) { return static_cast<fs::directory_options>(val); }
+
+int main(int, char**) {
+  typedef fs::directory_options E;
+  static_assert(std::is_enum<E>::value, "");
+
+  // Check that E is a scoped enum by checking for conversions.
+  typedef std::underlying_type<E>::type UT;
+  static_assert(!std::is_convertible<E, UT>::value, "");
+  LIBCPP_ONLY(static_assert(std::is_same<UT, unsigned char>::value, ""));
+
+  typedef check_bitmask_type<E, E::follow_directory_symlink, E::skip_permission_denied> BitmaskTester;
+  assert(BitmaskTester::check());
+
+  static_assert(
+        E::none                     == ME(0) &&
+        E::follow_directory_symlink == ME(1) &&
+        E::skip_permission_denied   == ME(2),
+        "Expected enumeration values do not match");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.file_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.file_type.pass.cpp
new file mode 100644
index 0000000..81e7227
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.file_type.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// enum class file_type;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+constexpr fs::file_type ME(int val) { return static_cast<fs::file_type>(val); }
+
+int main(int, char**) {
+  typedef fs::file_type E;
+  static_assert(std::is_enum<E>::value, "");
+
+  // Check that E is a scoped enum by checking for conversions.
+  typedef std::underlying_type<E>::type UT;
+  static_assert(!std::is_convertible<E, UT>::value, "");
+
+  LIBCPP_ONLY(static_assert(std::is_same<UT, signed char>::value, "")); // Implementation detail
+
+  // The standard doesn't specify the numeric values of the enum.
+  LIBCPP_STATIC_ASSERT(
+          E::none == ME(0) &&
+          E::not_found == ME(-1) &&
+          E::regular == ME(1) &&
+          E::directory == ME(2) &&
+          E::symlink == ME(3) &&
+          E::block == ME(4) &&
+          E::character == ME(5) &&
+          E::fifo == ME(6) &&
+          E::socket == ME(7) &&
+          E::unknown == ME(8),
+        "Expected enumeration values do not match");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.path.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.path.format.pass.cpp
new file mode 100644
index 0000000..210d28a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.path.format.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// class path;
+// enum class format;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  typedef fs::path::format E;
+  static_assert(std::is_enum<E>::value, "");
+
+  typedef std::underlying_type<E>::type UT;
+
+  LIBCPP_ONLY(static_assert(std::is_same<UT, unsigned char>::value, "")); // Implementation detail
+
+  static_assert(
+          E::auto_format   != E::native_format &&
+          E::auto_format   != E::generic_format &&
+          E::native_format != E::generic_format,
+        "Expected enumeration values are not unique");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.perm_options.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.perm_options.pass.cpp
new file mode 100644
index 0000000..99d6950
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.perm_options.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// enum class perm_options;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+#include <sys/stat.h>
+
+#include "test_macros.h"
+#include "check_bitmask_types.h"
+
+
+constexpr fs::perm_options ME(int val) {
+  return static_cast<fs::perm_options>(val);
+}
+
+int main(int, char**) {
+  typedef fs::perm_options E;
+  static_assert(std::is_enum<E>::value, "");
+
+  // Check that E is a scoped enum by checking for conversions.
+  typedef std::underlying_type<E>::type UT;
+  static_assert(!std::is_convertible<E, UT>::value, "");
+
+  LIBCPP_ONLY(static_assert(std::is_same<UT, unsigned char >::value, "")); // Implementation detail
+
+  typedef check_bitmask_type<E, E::replace, E::nofollow> BitmaskTester;
+  assert(BitmaskTester::check());
+
+  static_assert(
+        E::replace  == ME(1) &&
+        E::add      == ME(2) &&
+        E::remove   == ME(4) &&
+        E::nofollow == ME(8),
+        "Expected enumeration values do not match");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.perms.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.perms.pass.cpp
new file mode 100644
index 0000000..ca990cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.enum/enum.perms.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// enum class perms;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+#include <sys/stat.h>
+
+#include "test_macros.h"
+#include "check_bitmask_types.h"
+
+
+constexpr fs::perms ME(int val) { return static_cast<fs::perms>(val); }
+
+int main(int, char**) {
+  typedef fs::perms E;
+  static_assert(std::is_enum<E>::value, "");
+
+  // Check that E is a scoped enum by checking for conversions.
+  typedef std::underlying_type<E>::type UT;
+  static_assert(!std::is_convertible<E, UT>::value, "");
+
+  LIBCPP_ONLY(static_assert(std::is_same<UT, unsigned >::value, "")); // Implementation detail
+
+  typedef check_bitmask_type<E, E::group_all, E::owner_all> BitmaskTester;
+  assert(BitmaskTester::check());
+
+  static_assert(
+        E::none         == ME(0) &&
+
+        E::owner_read   == ME(0400) &&
+        E::owner_write  == ME(0200) &&
+        E::owner_exec   == ME(0100) &&
+        E::owner_all    == ME(0700) &&
+
+        E::group_read   == ME(040) &&
+        E::group_write  == ME(020) &&
+        E::group_exec   == ME(010) &&
+        E::group_all    == ME(070) &&
+
+        E::others_read  == ME(04) &&
+        E::others_write == ME(02) &&
+        E::others_exec  == ME(01) &&
+        E::others_all   == ME(07) &&
+        E::all          == ME(0777) &&
+        E::set_uid      == ME(04000) &&
+        E::set_gid      == ME(02000) &&
+        E::sticky_bit   == ME(01000) &&
+        E::mask         == ME(07777) &&
+        E::unknown      == ME(0xFFFF),
+        "Expected enumeration values do not match");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.error.report/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.error.report/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.error.report/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/enable_borrowed_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/enable_borrowed_range.compile.pass.cpp
new file mode 100644
index 0000000..2cbf924
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/enable_borrowed_range.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <filesystem>
+
+// template <>
+// inline constexpr bool ranges::enable_borrowed_range<filesystem::directory_iterator> = true;
+// template <>
+// inline constexpr bool ranges::enable_borrowed_range<filesystem::recursive_directory_iterator> = true;
+
+#include <filesystem>
+#include <ranges>
+
+template<class Range>
+void test() {
+  static_assert(std::ranges::enable_borrowed_range<Range>);
+  static_assert(!std::ranges::enable_borrowed_range<Range&>);
+  static_assert(!std::ranges::enable_borrowed_range<const Range>);
+}
+
+void test() {
+  test<std::filesystem::directory_iterator>();
+  test<std::filesystem::recursive_directory_iterator>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/enable_view.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/enable_view.compile.pass.cpp
new file mode 100644
index 0000000..f5c1471
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/enable_view.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <filesystem>
+
+// template <>
+// inline constexpr bool ranges::enable_view<filesystem::directory_iterator> = true;
+// template <>
+// inline constexpr bool ranges::enable_view<filesystem::recursive_directory_iterator> = true;
+
+#include <filesystem>
+#include <ranges>
+
+template<class Range>
+void test() {
+  static_assert(std::ranges::enable_view<Range>);
+  static_assert(!std::ranges::enable_view<Range&>);
+  static_assert(!std::ranges::enable_view<const Range>);
+}
+
+void test() {
+  test<std::filesystem::directory_iterator>();
+  test<std::filesystem::recursive_directory_iterator>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/file_time_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/file_time_type.pass.cpp
new file mode 100644
index 0000000..afdf0ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/file_time_type.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// typedef TrivialClock file_time_type;
+
+#include "filesystem_include.h"
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// system_clock is used because it meets the requirements of TrivialClock,
+// and the resolution and range of system_clock should match the operating
+// system's file time type.
+
+void test_trivial_clock() {
+  using namespace fs;
+  using Clock = file_time_type::clock;
+  ASSERT_NOEXCEPT(Clock::now());
+  ASSERT_SAME_TYPE(decltype(Clock::now()), file_time_type);
+  ASSERT_SAME_TYPE(Clock::time_point, file_time_type);
+  volatile auto* odr_use = &Clock::is_steady;
+  ((void)odr_use);
+}
+
+int main(int, char**) {
+  test_trivial_clock();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/file_time_type_resolution.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/file_time_type_resolution.compile.pass.cpp
new file mode 100644
index 0000000..578adda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/file_time_type_resolution.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, windows
+
+// MS STL and libstdc++ use the native windows file timestamp resolution,
+// with 100 ns resolution.
+
+// <filesystem>
+
+// typedef TrivialClock file_time_type;
+
+#include "filesystem_include.h"
+#include <chrono>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using namespace fs;
+using Dur = file_time_type::duration;
+using Period = Dur::period;
+ASSERT_SAME_TYPE(Period, std::nano);
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/space_info.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/space_info.pass.cpp
new file mode 100644
index 0000000..9a9a93c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.filesystem.synopsis/space_info.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <filesystem>
+
+// friend bool operator==(const space_info&, const space_info&);
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+using namespace fs;
+
+constexpr bool test() {
+  assert(testEquality(space_info{1, 2, 3}, space_info{1, 2, 3}, true));
+  assert(testEquality(space_info{0, 2, 3}, space_info{1, 2, 3}, false));
+  assert(testEquality(space_info{1, 0, 3}, space_info{1, 2, 3}, false));
+  assert(testEquality(space_info{1, 2, 0}, space_info{1, 2, 3}, false));
+
+  return true;
+}
+
+int main(int, char**) {
+  using space_info = std::filesystem::space_info;
+
+  AssertEqualityAreNoexcept<space_info>();
+  AssertEqualityReturnBool<space_info>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp
new file mode 100644
index 0000000..4b597fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path absolute(const path& p, const path& base=current_path());
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_absolute_path_test_suite)
+
+TEST_CASE(absolute_signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec;
+    ASSERT_NOT_NOEXCEPT(absolute(p));
+    ASSERT_NOT_NOEXCEPT(absolute(p, ec));
+}
+
+
+TEST_CASE(basic_test)
+{
+    const fs::path cwd = fs::current_path();
+    const struct {
+      std::string input;
+      fs::path expect;
+    } TestCases [] = {
+        {"", cwd / ""},
+        {"foo", cwd / "foo"},
+        {"foo/", cwd / "foo/"},
+        {"/already_absolute", cwd.root_name() / "/already_absolute"}
+    };
+    for (auto& TC : TestCases) {
+        std::error_code ec = GetTestEC();
+        const path ret = absolute(TC.input, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(ret.is_absolute());
+        TEST_CHECK(PathEqIgnoreSep(ret, TC.expect));
+        LIBCPP_ONLY(TEST_CHECK(PathEq(ret, TC.expect)));
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.canonical/canonical.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.canonical/canonical.pass.cpp
new file mode 100644
index 0000000..707b646
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.canonical/canonical.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path canonical(const path& p);
+// path canonical(const path& p, error_code& ec);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_canonical_path_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(canonical(p));
+    ASSERT_NOT_NOEXCEPT(canonical(p, ec));
+}
+
+// There are 4 cases is the proposal for absolute path.
+// Each scope tests one of the cases.
+TEST_CASE(test_canonical)
+{
+    static_test_env static_env;
+    CWDGuard guard;
+    // has_root_name() && has_root_directory()
+    const path Root = static_env.Root;
+    const path RootName = Root.filename();
+    const path DirName = static_env.Dir.filename();
+    const path SymlinkName = static_env.SymlinkToFile.filename();
+    struct TestCase {
+        path p;
+        path expect;
+        path base;
+        TestCase(path p1, path e, path b)
+            : p(p1), expect(e), base(b) {}
+    };
+    const TestCase testCases[] = {
+        { ".", Root, Root },
+        { DirName / ".." / "." / DirName, static_env.Dir, Root },
+        { static_env.Dir2 / "..",    static_env.Dir, Root },
+        { static_env.Dir3 / "../..", static_env.Dir, Root },
+        { static_env.Dir / ".",      static_env.Dir, Root },
+        { Root / "." / DirName / ".." / DirName, static_env.Dir, Root },
+        { path("..") / "." / RootName / DirName / ".." / DirName,
+          static_env.Dir,
+          Root },
+        { static_env.SymlinkToFile,  static_env.File, Root },
+        { SymlinkName, static_env.File, Root}
+    };
+    for (auto& TC : testCases) {
+        std::error_code ec = GetTestEC();
+        fs::current_path(TC.base);
+        const path ret = canonical(TC.p, ec);
+        TEST_REQUIRE(!ec);
+        const path ret2 = canonical(TC.p);
+        TEST_CHECK(PathEq(ret, TC.expect));
+        TEST_CHECK(PathEq(ret, ret2));
+        TEST_CHECK(ret.is_absolute());
+    }
+}
+
+TEST_CASE(test_dne_path)
+{
+    static_test_env static_env;
+    std::error_code ec = GetTestEC();
+    {
+        const path ret = canonical(static_env.DNE, ec);
+        TEST_CHECK(ec != GetTestEC());
+        TEST_REQUIRE(ec);
+        TEST_CHECK(ret == path{});
+    }
+    {
+        TEST_CHECK_THROW(filesystem_error, canonical(static_env.DNE));
+    }
+}
+
+TEST_CASE(test_exception_contains_paths)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    static_test_env static_env;
+    CWDGuard guard;
+    const path p = "blabla/dne";
+    try {
+        (void)canonical(p);
+        TEST_REQUIRE(false);
+    } catch (filesystem_error const& err) {
+        TEST_CHECK(err.path1() == p);
+        // libc++ provides the current path as the second path in the exception
+        LIBCPP_ONLY(TEST_CHECK(err.path2() == current_path()));
+    }
+    fs::current_path(static_env.Dir);
+    try {
+        (void)canonical(p);
+        TEST_REQUIRE(false);
+    } catch (filesystem_error const& err) {
+        TEST_CHECK(err.path1() == p);
+        LIBCPP_ONLY(TEST_CHECK(err.path2() == static_env.Dir));
+    }
+#endif
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy/copy.pass.cpp
new file mode 100644
index 0000000..bf9371e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy/copy.pass.cpp
@@ -0,0 +1,321 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void copy(const path& from, const path& to);
+// void copy(const path& from, const path& to, error_code& ec);
+// void copy(const path& from, const path& to, copy_options options);
+// void copy(const path& from, const path& to, copy_options options,
+//           error_code& ec);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+using CO = fs::copy_options;
+
+TEST_SUITE(filesystem_copy_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    const copy_options opts{}; ((void)opts);
+    ASSERT_NOT_NOEXCEPT(fs::copy(p, p));
+    ASSERT_NOT_NOEXCEPT(fs::copy(p, p, ec));
+    ASSERT_NOT_NOEXCEPT(copy(p, p, opts));
+    ASSERT_NOT_NOEXCEPT(copy(p, p, opts, ec));
+}
+
+// There are 4 cases is the proposal for absolute path.
+// Each scope tests one of the cases.
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, path const& t, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::copy(f, t);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == t
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)t); ((void)ec);
+        return true;
+#endif
+    };
+
+    static_test_env static_env;
+    scoped_test_env env;
+    const path file = env.create_file("file1", 42);
+    const path dir = env.create_dir("dir");
+#if !defined(_WIN32) && !defined(__ANDROID__)
+    const path fifo = env.create_fifo("fifo");
+    TEST_REQUIRE(is_other(fifo));
+#endif
+
+    const auto test_ec = GetTestEC();
+
+    // !exists(f)
+    {
+        std::error_code ec = test_ec;
+        const path f = static_env.DNE;
+        const path t = env.test_root;
+        fs::copy(f, t, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(ec != test_ec);
+        TEST_CHECK(checkThrow(f, t, ec));
+    }
+    { // equivalent(f, t) == true
+        std::error_code ec = test_ec;
+        fs::copy(file, file, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(ec != test_ec);
+        TEST_CHECK(checkThrow(file, file, ec));
+    }
+    { // is_directory(from) && is_file(to)
+        std::error_code ec = test_ec;
+        fs::copy(dir, file, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(ec != test_ec);
+        TEST_CHECK(checkThrow(dir, file, ec));
+    }
+#if !defined(_WIN32) && !defined(__ANDROID__)
+    { // is_other(from)
+        std::error_code ec = test_ec;
+        fs::copy(fifo, dir, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(ec != test_ec);
+        TEST_CHECK(checkThrow(fifo, dir, ec));
+    }
+    { // is_other(to)
+        std::error_code ec = test_ec;
+        fs::copy(file, fifo, ec);
+        TEST_REQUIRE(ec);
+        TEST_REQUIRE(ec != test_ec);
+        TEST_CHECK(checkThrow(file, fifo, ec));
+    }
+#endif
+}
+
+TEST_CASE(from_is_symlink)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    const path symlink = env.create_symlink(file, "sym");
+    const path dne = env.make_env_path("dne");
+
+    { // skip symlinks
+        std::error_code ec = GetTestEC();
+        fs::copy(symlink, dne, copy_options::skip_symlinks, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(dne));
+    }
+    {
+        const path dest = env.make_env_path("dest");
+        std::error_code ec = GetTestEC();
+        fs::copy(symlink, dest, copy_options::copy_symlinks, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(exists(dest));
+        TEST_CHECK(is_symlink(dest));
+    }
+    { // copy symlink but target exists
+        std::error_code ec = GetTestEC();
+        fs::copy(symlink, file, copy_options::copy_symlinks, ec);
+        TEST_CHECK(ec);
+        TEST_CHECK(ec != GetTestEC());
+    }
+    { // create symlinks but target exists
+        std::error_code ec = GetTestEC();
+        fs::copy(symlink, file, copy_options::create_symlinks, ec);
+        TEST_CHECK(ec);
+        TEST_CHECK(ec != GetTestEC());
+    }
+}
+
+TEST_CASE(from_is_regular_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    const path dir = env.create_dir("dir");
+    { // skip copy because of directory
+        const path dest = env.make_env_path("dest1");
+        std::error_code ec = GetTestEC();
+        fs::copy(file, dest, CO::directories_only, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(dest));
+    }
+    { // create symlink to file
+        const path dest = env.make_env_path("sym");
+        std::error_code ec = GetTestEC();
+        fs::copy(file, dest, CO::create_symlinks, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(is_symlink(dest));
+        TEST_CHECK(equivalent(file, canonical(dest)));
+    }
+#if !defined(__ANDROID__) // SELinux restriction (maybe root shell would work?)
+    { // create hard link to file
+        const path dest = env.make_env_path("hardlink");
+        TEST_CHECK(hard_link_count(file) == 1);
+        std::error_code ec = GetTestEC();
+        fs::copy(file, dest, CO::create_hard_links, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(exists(dest));
+        TEST_CHECK(hard_link_count(file) == 2);
+    }
+#endif
+    { // is_directory(t)
+        const path dest_dir = env.create_dir("dest_dir");
+        const path expect_dest = dest_dir / file.filename();
+        std::error_code ec = GetTestEC();
+        fs::copy(file, dest_dir, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(is_regular_file(expect_dest));
+    }
+    { // otherwise copy_file(from, to, ...)
+        const path dest = env.make_env_path("file_copy");
+        std::error_code ec = GetTestEC();
+        fs::copy(file, dest, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(is_regular_file(dest));
+    }
+}
+
+TEST_CASE(from_is_directory)
+{
+    struct FileInfo {
+        path filename;
+        std::size_t size;
+    };
+    const FileInfo files[] = {
+        {"file1", 0},
+        {"file2", 42},
+        {"file3", 300}
+    };
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path nested_dir_name = "dir2";
+    const path nested_dir = env.create_dir("dir/dir2");
+
+    for (auto& FI : files) {
+        env.create_file(dir / FI.filename, FI.size);
+        env.create_file(nested_dir / FI.filename, FI.size);
+    }
+    { // test for non-existent directory
+        const path dest = env.make_env_path("dest_dir1");
+        std::error_code ec = GetTestEC();
+        fs::copy(dir, dest, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_directory(dest));
+        for (auto& FI : files) {
+            path created = dest / FI.filename;
+            TEST_CHECK(is_regular_file(created));
+            TEST_CHECK(file_size(created) == FI.size);
+        }
+        TEST_CHECK(!is_directory(dest / nested_dir_name));
+    }
+    { // test for existing directory
+        const path dest = env.create_dir("dest_dir2");
+        std::error_code ec = GetTestEC();
+        fs::copy(dir, dest, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_directory(dest));
+        for (auto& FI : files) {
+            path created = dest / FI.filename;
+            TEST_CHECK(is_regular_file(created));
+            TEST_CHECK(file_size(created) == FI.size);
+        }
+        TEST_CHECK(!is_directory(dest / nested_dir_name));
+    }
+    { // test recursive copy
+        const path dest = env.make_env_path("dest_dir3");
+        std::error_code ec = GetTestEC();
+        fs::copy(dir, dest, CO::recursive, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_directory(dest));
+        const path nested_dest = dest / nested_dir_name;
+        TEST_REQUIRE(is_directory(nested_dest));
+        for (auto& FI : files) {
+            path created = dest / FI.filename;
+            path nested_created = nested_dest / FI.filename;
+            TEST_CHECK(is_regular_file(created));
+            TEST_CHECK(file_size(created) == FI.size);
+            TEST_CHECK(is_regular_file(nested_created));
+            TEST_CHECK(file_size(nested_created) == FI.size);
+        }
+    }
+}
+
+TEST_CASE(test_copy_symlinks_to_symlink_dir)
+{
+    scoped_test_env env;
+    const path file1 = env.create_file("file1", 42);
+    const path file2 = env.create_file("file2", 101);
+    const path file2_sym = env.create_symlink(file2, "file2_sym");
+    const path dir = env.create_dir("dir");
+    const path dir_sym = env.create_directory_symlink(dir, "dir_sym");
+    {
+        std::error_code ec = GetTestEC();
+        fs::copy(file1, dir_sym, copy_options::copy_symlinks, ec);
+        TEST_CHECK(!ec);
+        const path dest = env.make_env_path("dir/file1");
+        TEST_CHECK(exists(dest));
+        TEST_CHECK(!is_symlink(dest));
+        TEST_CHECK(file_size(dest) == 42);
+    }
+}
+
+
+TEST_CASE(test_dir_create_symlink)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir1");
+    const path dest = env.make_env_path("dne");
+    {
+        std::error_code ec = GetTestEC();
+        fs::copy(dir, dest, copy_options::create_symlinks, ec);
+        TEST_CHECK(ErrorIs(ec, std::errc::is_a_directory));
+        TEST_CHECK(!exists(dest));
+        TEST_CHECK(!is_symlink(dest));
+    }
+    {
+        std::error_code ec = GetTestEC();
+        fs::copy(dir, dest, copy_options::create_symlinks|copy_options::recursive, ec);
+        TEST_CHECK(ErrorIs(ec, std::errc::is_a_directory));
+        TEST_CHECK(!exists(dest));
+        TEST_CHECK(!is_symlink(dest));
+    }
+}
+
+TEST_CASE(test_otherwise_no_effects_clause)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir1");
+    { // skip copy because of directory
+        const path dest = env.make_env_path("dest1");
+        std::error_code ec;
+        fs::copy(dir, dest, CO::directories_only, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(dest));
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_file/copy_file.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_file/copy_file.pass.cpp
new file mode 100644
index 0000000..be0c007
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_file/copy_file.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// bool copy_file(const path& from, const path& to);
+// bool copy_file(const path& from, const path& to, error_code& ec) noexcept;
+// bool copy_file(const path& from, const path& to, copy_options options);
+// bool copy_file(const path& from, const path& to, copy_options options,
+//           error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+using CO = fs::copy_options;
+
+TEST_SUITE(filesystem_copy_file_test_suite)
+
+TEST_CASE(test_signatures) {
+  const path p;
+  ((void)p);
+  const copy_options opts{};
+  ((void)opts);
+  std::error_code ec;
+  ((void)ec);
+  ASSERT_SAME_TYPE(decltype(fs::copy_file(p, p)), bool);
+  ASSERT_SAME_TYPE(decltype(fs::copy_file(p, p, opts)), bool);
+  ASSERT_SAME_TYPE(decltype(fs::copy_file(p, p, ec)), bool);
+  ASSERT_SAME_TYPE(decltype(fs::copy_file(p, p, opts, ec)), bool);
+  ASSERT_NOT_NOEXCEPT(fs::copy_file(p, p));
+  ASSERT_NOT_NOEXCEPT(fs::copy_file(p, p, opts));
+  ASSERT_NOT_NOEXCEPT(fs::copy_file(p, p, ec));
+  ASSERT_NOT_NOEXCEPT(fs::copy_file(p, p, opts, ec));
+}
+
+TEST_CASE(test_error_reporting) {
+
+  scoped_test_env env;
+  const path file = env.create_file("file1", 42);
+  const path file2 = env.create_file("file2", 55);
+
+  { // exists(to) && equivalent(to, from)
+    std::error_code ec;
+    TEST_CHECK(fs::copy_file(file, file, copy_options::overwrite_existing,
+                             ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::file_exists));
+    ExceptionChecker Checker(file, file, std::errc::file_exists, "copy_file");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, copy_file(file, file, copy_options::overwrite_existing));
+
+  }
+  { // exists(to) && !(skip_existing | overwrite_existing | update_existing)
+    std::error_code ec;
+    TEST_CHECK(fs::copy_file(file, file2, ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::file_exists));
+    ExceptionChecker Checker(file, file, std::errc::file_exists, "copy_file");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, copy_file(file, file, copy_options::overwrite_existing));
+
+  }
+}
+
+#if !defined(_WIN32) && !defined(__ANDROID__)
+TEST_CASE(non_regular_file_test) {
+  scoped_test_env env;
+  const path fifo = env.create_fifo("fifo");
+  const path dest = env.make_env_path("dest");
+  const path file = env.create_file("file", 42);
+
+  {
+    std::error_code ec = GetTestEC();
+    TEST_REQUIRE(fs::copy_file(fifo, dest, ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::not_supported));
+    TEST_CHECK(!exists(dest));
+  }
+  {
+    std::error_code ec = GetTestEC();
+    TEST_REQUIRE(fs::copy_file(file, fifo, copy_options::overwrite_existing,
+                               ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::not_supported));
+    TEST_CHECK(is_fifo(fifo));
+  }
+
+}
+#endif
+
+TEST_CASE(test_attributes_get_copied) {
+  scoped_test_env env;
+  const path file = env.create_file("file1", 42);
+  const path dest = env.make_env_path("file2");
+  (void)status(file);
+  perms new_perms = perms::owner_read;
+  permissions(file, new_perms);
+  std::error_code ec = GetTestEC();
+  TEST_REQUIRE(fs::copy_file(file, dest, ec) == true);
+  TEST_CHECK(!ec);
+  auto new_st = status(dest);
+  TEST_CHECK(new_st.permissions() == NormalizeExpectedPerms(new_perms));
+}
+
+TEST_CASE(copy_dir_test) {
+  scoped_test_env env;
+  const path file = env.create_file("file1", 42);
+  const path dest = env.create_dir("dir1");
+  std::error_code ec = GetTestEC();
+  TEST_CHECK(fs::copy_file(file, dest, ec) == false);
+  TEST_CHECK(ec);
+  TEST_CHECK(ec != GetTestEC());
+  ec = GetTestEC();
+  TEST_CHECK(fs::copy_file(dest, file, ec) == false);
+  TEST_CHECK(ec);
+  TEST_CHECK(ec != GetTestEC());
+}
+
+TEST_CASE(copy_file) {
+  scoped_test_env env;
+  const path file = env.create_file("file1", 42);
+
+  { // !exists(to)
+    const path dest = env.make_env_path("dest1");
+    std::error_code ec = GetTestEC();
+
+    TEST_REQUIRE(fs::copy_file(file, dest, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(file_size(dest) == 42);
+  }
+  { // exists(to) && overwrite_existing
+    const path dest = env.create_file("dest2", 55);
+    permissions(dest, perms::all);
+    permissions(file,
+                perms::group_write | perms::owner_write | perms::others_write,
+                perm_options::remove);
+
+    std::error_code ec = GetTestEC();
+    TEST_REQUIRE(fs::copy_file(file, dest, copy_options::overwrite_existing,
+                               ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(file_size(dest) == 42);
+    TEST_CHECK(status(dest).permissions() == status(file).permissions());
+  }
+  { // exists(to) && update_existing
+    using Sec = std::chrono::seconds;
+    const path older = env.create_file("older_file", 1);
+
+    SleepFor(Sec(2));
+    const path from = env.create_file("update_from", 55);
+
+    SleepFor(Sec(2));
+    const path newer = env.create_file("newer_file", 2);
+
+    std::error_code ec = GetTestEC();
+    TEST_REQUIRE(
+        fs::copy_file(from, older, copy_options::update_existing, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(file_size(older) == 55);
+
+    TEST_REQUIRE(
+        fs::copy_file(from, newer, copy_options::update_existing, ec) == false);
+    TEST_CHECK(!ec);
+    TEST_CHECK(file_size(newer) == 2);
+  }
+  { // skip_existing
+    const path file2 = env.create_file("file2", 55);
+    std::error_code ec = GetTestEC();
+    TEST_REQUIRE(fs::copy_file(file, file2, copy_options::skip_existing, ec) ==
+                 false);
+    TEST_CHECK(!ec);
+    TEST_CHECK(file_size(file2) == 55);
+  }
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_file/copy_file_large.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_file/copy_file_large.pass.cpp
new file mode 100644
index 0000000..dd38b1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_file/copy_file_large.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: long_tests
+
+// <filesystem>
+
+// bool copy_file(const path& from, const path& to);
+// bool copy_file(const path& from, const path& to, error_code& ec) noexcept;
+// bool copy_file(const path& from, const path& to, copy_options options);
+// bool copy_file(const path& from, const path& to, copy_options options,
+//           error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <cstdio>
+#include <string>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_copy_file_test_suite)
+
+// This test is intended to test 'sendfile's 2gb limit for a single call, and
+// to ensure that libc++ correctly copies files larger than that limit.
+// However it requires allocating ~5GB of filesystem space. This might not
+// be acceptable on all systems.
+TEST_CASE(large_file) {
+  using namespace fs;
+  constexpr uintmax_t sendfile_size_limit = 2147479552ull;
+  constexpr uintmax_t additional_size = 1024;
+  constexpr uintmax_t test_file_size = sendfile_size_limit + additional_size;
+  static_assert(test_file_size > sendfile_size_limit, "");
+
+  scoped_test_env env;
+
+  // Check that we have more than sufficient room to create the files needed
+  // to perform the test.
+  if (space(env.test_root).available < 3 * test_file_size) {
+    TEST_UNSUPPORTED();
+  }
+
+  // Create a file right at the size limit. The file is full of '\0's.
+  const path source = env.create_file("source", sendfile_size_limit);
+  const std::string additional_data(additional_size, 'x');
+  // Append known data to the end of the source file.
+  {
+    std::FILE* outf = std::fopen(source.string().c_str(), "a");
+    TEST_REQUIRE(outf != nullptr);
+    std::fputs(additional_data.c_str(), outf);
+    std::fclose(outf);
+  }
+  TEST_REQUIRE(file_size(source) == test_file_size);
+  const path dest = env.make_env_path("dest");
+
+  std::error_code ec = GetTestEC();
+  TEST_CHECK(copy_file(source, dest, ec));
+  TEST_CHECK(!ec);
+
+  TEST_REQUIRE(is_regular_file(dest));
+  TEST_CHECK(file_size(dest) == test_file_size);
+
+  // Read the data from the end of the destination file, and ensure it matches
+  // the data at the end of the source file.
+  std::string out_data(additional_size, 'z');
+  {
+    std::FILE* dest_file = std::fopen(dest.string().c_str(), "rb");
+    TEST_REQUIRE(dest_file != nullptr);
+    TEST_REQUIRE(std::fseek(dest_file, sendfile_size_limit, SEEK_SET) == 0);
+    TEST_REQUIRE(std::fread(&out_data[0], sizeof(out_data[0]), additional_size, dest_file) == additional_size);
+    std::fclose(dest_file);
+  }
+  TEST_CHECK(out_data.size() == additional_data.size());
+  TEST_CHECK(out_data == additional_data);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_symlink/copy_symlink.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_symlink/copy_symlink.pass.cpp
new file mode 100644
index 0000000..fff62c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.copy_symlink/copy_symlink.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void copy_symlink(const path& existing_symlink, const path& new_symlink);
+// void copy_symlink(const path& existing_symlink, const path& new_symlink,
+//                   error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_copy_symlink_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(fs::copy_symlink(p, p));
+    ASSERT_NOEXCEPT(fs::copy_symlink(p, p, ec));
+}
+
+
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, path const& t, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::copy_symlink(f, t);
+            return true;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)t); ((void)ec);
+        return true;
+#endif
+    };
+
+    scoped_test_env env;
+    const path file = env.create_file("file1", 42);
+    const path file2 = env.create_file("file2", 55);
+    const path sym = env.create_symlink(file, "sym");
+    const path dir = env.create_dir("dir");
+    const path dne = env.make_env_path("dne");
+    { // from is a file, not a symlink
+        std::error_code ec;
+        fs::copy_symlink(file, dne, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(checkThrow(file, dne, ec));
+    }
+    { // from is a file, not a symlink
+        std::error_code ec;
+        fs::copy_symlink(dir, dne, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(checkThrow(dir, dne, ec));
+    }
+    { // destination exists
+        std::error_code ec;
+        fs::copy_symlink(sym, file2, ec);
+        TEST_REQUIRE(ec);
+    }
+}
+
+TEST_CASE(copy_symlink_basic)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path dir_sym = env.create_directory_symlink(dir, "dir_sym");
+    const path file = env.create_file("file", 42);
+    const path file_sym = env.create_symlink(file, "file_sym");
+    { // test for directory symlinks
+        const path dest = env.make_env_path("dest1");
+        std::error_code ec;
+        fs::copy_symlink(dir_sym, dest, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_symlink(dest));
+        TEST_CHECK(equivalent(dest, dir));
+    }
+    { // test for file symlinks
+        const path dest = env.make_env_path("dest2");
+        std::error_code ec;
+        fs::copy_symlink(file_sym, dest, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_symlink(dest));
+        TEST_CHECK(equivalent(dest, file));
+    }
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directories/create_directories.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directories/create_directories.pass.cpp
new file mode 100644
index 0000000..f3c22c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directories/create_directories.pass.cpp
@@ -0,0 +1,167 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This test requires the dylib support introduced in D92769.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// bool create_directories(const path& p);
+// bool create_directories(const path& p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_create_directories_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::create_directories(p)), bool);
+    ASSERT_SAME_TYPE(decltype(fs::create_directories(p, ec)), bool);
+    ASSERT_NOT_NOEXCEPT(fs::create_directories(p));
+    ASSERT_NOT_NOEXCEPT(fs::create_directories(p, ec));
+}
+
+TEST_CASE(create_existing_directory)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir1");
+    std::error_code ec;
+    TEST_CHECK(fs::create_directories(dir, ec) == false);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(dir));
+}
+
+TEST_CASE(create_directory_one_level)
+{
+    scoped_test_env env;
+    const path dir = env.make_env_path("dir1");
+    std::error_code ec;
+    TEST_CHECK(fs::create_directories(dir, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(dir));
+}
+
+TEST_CASE(create_directories_multi_level)
+{
+    scoped_test_env env;
+    const path dir = env.make_env_path("dir1/dir2/dir3");
+    std::error_code ec;
+    TEST_CHECK(fs::create_directories(dir, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(dir));
+}
+
+TEST_CASE(create_directory_symlinks) {
+  scoped_test_env env;
+  const path root = env.create_dir("dir");
+  const path sym_dest_dead = env.make_env_path("dead");
+  const path dead_sym = env.create_directory_symlink(sym_dest_dead, "dir/sym_dir");
+  const path target = env.make_env_path("dir/sym_dir/foo");
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directories(target, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::file_exists));
+    TEST_CHECK(!exists(sym_dest_dead));
+    TEST_CHECK(!exists(dead_sym));
+  }
+}
+
+TEST_CASE(create_directory_through_symlinks) {
+  scoped_test_env env;
+  const path root = env.create_dir("dir");
+  const path sym_dir = env.create_directory_symlink(root, "sym_dir");
+  const path target = env.make_env_path("sym_dir/foo");
+  const path resolved_target = env.make_env_path("dir/foo");
+  TEST_REQUIRE(is_directory(sym_dir));
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directories(target, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(target));
+    TEST_CHECK(is_directory(resolved_target));
+  }
+}
+
+TEST_CASE(dest_is_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directories(file, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::file_exists));
+    TEST_CHECK(is_regular_file(file));
+}
+
+TEST_CASE(dest_part_is_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file");
+    const path dir = env.make_env_path("file/dir1");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directories(dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::not_a_directory));
+    TEST_CHECK(is_regular_file(file));
+    TEST_CHECK(!exists(dir));
+}
+
+TEST_CASE(dest_final_part_is_file)
+{
+    scoped_test_env env;
+    env.create_dir("dir");
+    const path file = env.create_file("dir/file");
+    const path dir = env.make_env_path("dir/file/dir1");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directories(dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::not_a_directory));
+    TEST_CHECK(is_regular_file(file));
+    TEST_CHECK(!exists(dir));
+}
+
+TEST_CASE(dest_is_empty_path)
+{
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directories(fs::path{}, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+    ExceptionChecker Checker(path{}, std::errc::no_such_file_or_directory,
+                             "create_directories");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker,
+                            fs::create_directories(path{}));
+}
+
+#ifdef _WIN32
+TEST_CASE(nonexistent_root)
+{
+    std::error_code ec = GetTestEC();
+    // If Q:\ doesn't exist, create_directories would try to recurse upwards
+    // to parent_path() until it finds a directory that does exist. As the
+    // whole path is the root name, parent_path() returns itself, and it
+    // would recurse indefinitely, unless the recursion is broken.
+    if (!exists("Q:\\"))
+       TEST_CHECK(fs::create_directories("Q:\\", ec) == false);
+    TEST_CHECK(fs::create_directories("\\\\nonexistentserver", ec) == false);
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory/create_directory.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory/create_directory.pass.cpp
new file mode 100644
index 0000000..cf7e64c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory/create_directory.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This test requires the dylib support introduced in http://llvm.org/D92769.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// bool create_directory(const path& p);
+// bool create_directory(const path& p, error_code& ec) noexcept;
+// bool create_directory(const path& p, const path& attr);
+// bool create_directory(const path& p, const path& attr, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+using namespace fs;
+
+fs::perms read_umask() {
+    auto old_mask = umask(0); // int on Windows, mode_t on POSIX.
+    umask(old_mask); // reset the mask to the old value.
+    return static_cast<fs::perms>(old_mask);
+}
+
+TEST_SUITE(filesystem_create_directory_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::create_directory(p)), bool);
+    ASSERT_SAME_TYPE(decltype(fs::create_directory(p, ec)), bool);
+    ASSERT_SAME_TYPE(decltype(fs::create_directory(p, p)), bool);
+    ASSERT_SAME_TYPE(decltype(fs::create_directory(p, p, ec)), bool);
+    ASSERT_NOT_NOEXCEPT(fs::create_directory(p));
+    ASSERT_NOEXCEPT(fs::create_directory(p, ec));
+    ASSERT_NOT_NOEXCEPT(fs::create_directory(p, p));
+    ASSERT_NOEXCEPT(fs::create_directory(p, p, ec));
+}
+
+
+TEST_CASE(create_existing_directory)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir1");
+    std::error_code ec;
+    TEST_CHECK(fs::create_directory(dir, ec) == false);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(dir));
+    // Test throwing version
+    TEST_CHECK(fs::create_directory(dir) == false);
+}
+
+TEST_CASE(create_directory_one_level)
+{
+    scoped_test_env env;
+    const path dir = env.make_env_path("dir1");
+    std::error_code ec;
+    TEST_CHECK(fs::create_directory(dir, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(dir));
+
+    auto st = status(dir);
+    const perms expect_perms = perms::all & ~(read_umask());
+    TEST_CHECK((st.permissions() & perms::all) == expect_perms);
+}
+
+TEST_CASE(create_directory_multi_level)
+{
+    scoped_test_env env;
+    const path dir = env.make_env_path("dir1/dir2");
+    const path dir1 = env.make_env_path("dir1");
+    std::error_code ec;
+    TEST_CHECK(fs::create_directory(dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(!is_directory(dir));
+    TEST_CHECK(!is_directory(dir1));
+}
+
+TEST_CASE(dest_is_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directory(file, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(is_regular_file(file));
+}
+
+TEST_CASE(dest_part_is_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file");
+    const path dir = env.make_env_path("file/dir1");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directory(dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(is_regular_file(file));
+    TEST_CHECK(!exists(dir));
+}
+
+TEST_CASE(dest_is_symlink_to_dir)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path sym = env.create_directory_symlink(dir, "sym_name");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(sym, ec) == false);
+    TEST_CHECK(!ec);
+}
+
+TEST_CASE(dest_is_symlink_to_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file");
+    const path sym = env.create_symlink(file, "sym_name");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(sym, ec) == false);
+    TEST_CHECK(ec);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory/create_directory_with_attributes.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory/create_directory_with_attributes.pass.cpp
new file mode 100644
index 0000000..c3ca9dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory/create_directory_with_attributes.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This test requires the dylib support introduced in http://llvm.org/D92769.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// bool create_directory(const path& p, const path& attr);
+// bool create_directory(const path& p, const path& attr, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_create_directory_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::create_directory(p, p)), bool);
+    ASSERT_SAME_TYPE(decltype(fs::create_directory(p, p, ec)), bool);
+    ASSERT_NOT_NOEXCEPT(fs::create_directory(p, p));
+    ASSERT_NOEXCEPT(fs::create_directory(p, p, ec));
+}
+
+TEST_CASE(create_existing_directory)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir1");
+    const path dir2 = env.create_dir("dir2");
+
+    const perms orig_p = status(dir).permissions();
+    permissions(dir2, perms::none);
+
+    std::error_code ec;
+    TEST_CHECK(fs::create_directory(dir, dir2, ec) == false);
+    TEST_CHECK(!ec);
+
+    // Check that the permissions were unchanged
+    TEST_CHECK(orig_p == status(dir).permissions());
+
+    // Test throwing version
+    TEST_CHECK(fs::create_directory(dir, dir2) == false);
+}
+
+// Windows doesn't have the concept of perms::none on directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+TEST_CASE(create_directory_one_level)
+{
+    scoped_test_env env;
+    // Remove setgid which mkdir would inherit
+    permissions(env.test_root, perms::set_gid, perm_options::remove);
+
+    const path dir = env.make_env_path("dir1");
+    const path attr_dir = env.create_dir("dir2");
+    permissions(attr_dir, perms::none);
+
+    std::error_code ec;
+    TEST_CHECK(fs::create_directory(dir, attr_dir, ec) == true);
+    TEST_CHECK(!ec);
+    TEST_CHECK(is_directory(dir));
+
+    // Check that the new directory has the same permissions as attr_dir
+    auto st = status(dir);
+    TEST_CHECK(st.permissions() == perms::none);
+}
+#endif
+
+TEST_CASE(create_directory_multi_level)
+{
+    scoped_test_env env;
+    const path dir = env.make_env_path("dir1/dir2");
+    const path dir1 = env.make_env_path("dir1");
+    const path attr_dir = env.create_dir("attr_dir");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directory(dir, attr_dir, ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+    TEST_CHECK(!is_directory(dir));
+    TEST_CHECK(!is_directory(dir1));
+}
+
+TEST_CASE(dest_is_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    const path attr_dir = env.create_dir("attr_dir");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directory(file, attr_dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(is_regular_file(file));
+}
+
+TEST_CASE(dest_part_is_file)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    const path dir = env.make_env_path("file/dir1");
+    const path attr_dir = env.create_dir("attr_dir");
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(fs::create_directory(dir, attr_dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(is_regular_file(file));
+    TEST_CHECK(!exists(dir));
+}
+
+TEST_CASE(attr_dir_is_invalid) {
+  scoped_test_env env;
+  const path file = env.create_file("file", 42);
+  const path dest = env.make_env_path("dir");
+  const path dne = env.make_env_path("dne");
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(dest, file, ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::not_a_directory));
+  }
+  TEST_REQUIRE(!exists(dest));
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(dest, dne, ec) == false);
+    TEST_CHECK(ErrorIs(ec, std::errc::not_a_directory));
+  }
+}
+
+TEST_CASE(dest_is_symlink_to_unexisting) {
+  scoped_test_env env;
+  const path attr_dir = env.create_dir("attr_dir");
+  const path sym = env.create_symlink("dne_sym", "dne_sym_name");
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(sym, attr_dir, ec) == false);
+    TEST_CHECK(ec);
+  }
+}
+
+TEST_CASE(dest_is_symlink_to_dir) {
+  scoped_test_env env;
+  const path dir = env.create_dir("dir");
+  const path sym = env.create_directory_symlink(dir, "sym_name");
+  const path attr_dir = env.create_dir("attr_dir");
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(sym, attr_dir, ec) == false);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_CASE(dest_is_symlink_to_file) {
+  scoped_test_env env;
+  const path file = env.create_file("file");
+  const path sym = env.create_symlink(file, "sym_name");
+  const path attr_dir = env.create_dir("attr_dir");
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(create_directory(sym, attr_dir, ec) == false);
+    TEST_CHECK(ec);
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory_symlink/create_directory_symlink.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory_symlink/create_directory_symlink.pass.cpp
new file mode 100644
index 0000000..2b6467b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_directory_symlink/create_directory_symlink.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void create_directory_symlink(const path& existing_symlink, const path& new_symlink);
+// void create_directory_symlink(const path& existing_symlink, const path& new_symlink,
+//                   error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_create_directory_symlink_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(fs::create_directory_symlink(p, p));
+    ASSERT_NOEXCEPT(fs::create_directory_symlink(p, p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file1", 42);
+    const path file2 = env.create_file("file2", 55);
+    const path sym = env.create_symlink(file, "sym");
+    { // destination exists
+        std::error_code ec;
+        fs::create_directory_symlink(sym, file2, ec);
+        TEST_REQUIRE(ec);
+    }
+}
+
+TEST_CASE(create_directory_symlink_basic)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path dir_sym = env.create_directory_symlink(dir, "dir_sym");
+
+    const path dest = env.make_env_path("dest1");
+    std::error_code ec;
+    fs::create_directory_symlink(dir_sym, dest, ec);
+    TEST_REQUIRE(!ec);
+    TEST_CHECK(is_symlink(dest));
+    TEST_CHECK(equivalent(dest, dir));
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_hard_link/create_hard_link.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_hard_link/create_hard_link.pass.cpp
new file mode 100644
index 0000000..4ea6c4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_hard_link/create_hard_link.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void create_hard_link(const path& existing_symlink, const path& new_symlink);
+// void create_hard_link(const path& existing_symlink, const path& new_symlink,
+//                   error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_create_hard_link_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(fs::create_hard_link(p, p));
+    ASSERT_NOEXCEPT(fs::create_hard_link(p, p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file1", 42);
+    const path file2 = env.create_file("file2", 55);
+    const path sym = env.create_symlink(file, "sym");
+    { // destination exists
+        std::error_code ec;
+        fs::create_hard_link(sym, file2, ec);
+        TEST_REQUIRE(ec);
+    }
+}
+
+// TODO(rprichard): For Android, the other create_hard_link calls are OK and
+// do not trip an SELinux error, because they fail for other reasons first.
+// If we add a "fs_hard_link" Lit feature, though, we may want to disable the
+// other calls here too. (Maybe this hard link stuff can be tested on Android
+// with root?)
+#if !defined(__ANDROID__)
+TEST_CASE(create_file_hard_link)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file");
+    const path dest = env.make_env_path("dest1");
+    std::error_code ec;
+    TEST_CHECK(hard_link_count(file) == 1);
+    fs::create_hard_link(file, dest, ec);
+    TEST_REQUIRE(!ec);
+    TEST_CHECK(exists(dest));
+    TEST_CHECK(equivalent(dest, file));
+    TEST_CHECK(hard_link_count(file) == 2);
+}
+#endif
+
+TEST_CASE(create_directory_hard_link_fails)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path dest = env.make_env_path("dest2");
+    std::error_code ec;
+
+    fs::create_hard_link(dir, dest, ec);
+    TEST_REQUIRE(ec);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_symlink/create_symlink.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_symlink/create_symlink.pass.cpp
new file mode 100644
index 0000000..3b54cff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.create_symlink/create_symlink.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void create_symlink(const path& existing_symlink, const path& new_symlink);
+// void create_symlink(const path& existing_symlink, const path& new_symlink,
+//                   error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_create_symlink_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(fs::create_symlink(p, p));
+    ASSERT_NOEXCEPT(fs::create_symlink(p, p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file1", 42);
+    const path file2 = env.create_file("file2", 55);
+    const path sym = env.create_symlink(file, "sym");
+    { // destination exists
+        std::error_code ec;
+        fs::create_symlink(sym, file2, ec);
+        TEST_REQUIRE(ec);
+    }
+}
+
+TEST_CASE(create_symlink_basic)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    const path file_sym = env.create_symlink(file, "file_sym");
+    const path dir = env.create_dir("dir");
+    const path dir_sym = env.create_directory_symlink(dir, "dir_sym");
+    {
+        const path dest = env.make_env_path("dest1");
+        std::error_code ec;
+        fs::create_symlink(file_sym, dest, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_symlink(dest));
+        TEST_CHECK(equivalent(dest, file));
+    }
+    {
+        const path dest = env.make_env_path("dest2");
+        std::error_code ec;
+        fs::create_directory_symlink(dir_sym, dest, ec);
+        TEST_REQUIRE(!ec);
+        TEST_CHECK(is_symlink(dest));
+        TEST_CHECK(equivalent(dest, dir));
+    }
+}
+
+TEST_CASE(create_symlink_dest_cleanup)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path file = env.create_file("file", 42);
+    const path sym = dir / "link";
+    // The target path has to be normalized to backslashes before creating
+    // the link on windows, otherwise the link isn't dereferencable.
+    const path sym_target = "../file";
+    path sym_target_normalized = sym_target;
+    sym_target_normalized.make_preferred();
+    std::error_code ec;
+    fs::create_symlink(sym_target, sym, ec);
+    TEST_REQUIRE(!ec);
+    TEST_CHECK(equivalent(sym, file, ec));
+    const path ret = fs::read_symlink(sym, ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(ret.native() == sym_target_normalized.native());
+}
+
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.current_path/current_path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.current_path/current_path.pass.cpp
new file mode 100644
index 0000000..5e90c44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.current_path/current_path.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path current_path();
+// path current_path(error_code& ec);
+// void current_path(path const&);
+// void current_path(path const&, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_current_path_path_test_suite)
+
+TEST_CASE(current_path_signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(current_path());
+    ASSERT_NOT_NOEXCEPT(current_path(ec));
+    ASSERT_NOT_NOEXCEPT(current_path(p));
+    ASSERT_NOEXCEPT(current_path(p, ec));
+}
+
+TEST_CASE(current_path_test)
+{
+    std::error_code ec;
+    const path p = current_path(ec);
+    TEST_REQUIRE(!ec);
+    TEST_CHECK(p.is_absolute());
+    TEST_CHECK(is_directory(p));
+
+    const path p2 = current_path();
+    TEST_CHECK(p2 == p);
+}
+
+TEST_CASE(current_path_after_change_test)
+{
+    static_test_env static_env;
+    CWDGuard guard;
+    const path new_path = static_env.Dir;
+    current_path(new_path);
+    TEST_CHECK(current_path() == new_path);
+}
+
+TEST_CASE(current_path_is_file_test)
+{
+    static_test_env static_env;
+    CWDGuard guard;
+    const path p = static_env.File;
+    std::error_code ec;
+    const path old_p = current_path();
+    current_path(p, ec);
+    TEST_CHECK(ec);
+    TEST_CHECK(old_p == current_path());
+}
+
+TEST_CASE(set_to_non_absolute_path)
+{
+    static_test_env static_env;
+    CWDGuard guard;
+    const path base = static_env.Dir;
+    current_path(base);
+    const path p = static_env.Dir2.filename();
+    std::error_code ec;
+    current_path(p, ec);
+    TEST_CHECK(!ec);
+    const path new_cwd = current_path();
+    TEST_CHECK(new_cwd == static_env.Dir2);
+    TEST_CHECK(new_cwd.is_absolute());
+}
+
+TEST_CASE(set_to_empty)
+{
+    const path p = "";
+    std::error_code ec;
+    const path old_p = current_path();
+    current_path(p, ec);
+    TEST_CHECK(ec);
+    TEST_CHECK(old_p == current_path());
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.equivalent/equivalent.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.equivalent/equivalent.pass.cpp
new file mode 100644
index 0000000..79e6b0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.equivalent/equivalent.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool equivalent(path const& lhs, path const& rhs);
+// bool equivalent(path const& lhs, path const& rhs, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(equivalent_test_suite)
+
+TEST_CASE(signature_test) {
+  const path p;
+  ((void)p);
+  std::error_code ec;
+  ((void)ec);
+  ASSERT_NOEXCEPT(equivalent(p, p, ec));
+  ASSERT_NOT_NOEXCEPT(equivalent(p, p));
+}
+
+TEST_CASE(equivalent_test) {
+  static_test_env static_env;
+  struct TestCase {
+    path lhs;
+    path rhs;
+    bool expect;
+  };
+  const TestCase testCases[] = {
+      {static_env.Dir, static_env.Dir, true},
+      {static_env.File, static_env.Dir, false},
+      {static_env.Dir, static_env.SymlinkToDir, true},
+      {static_env.Dir, static_env.SymlinkToFile, false},
+      {static_env.File, static_env.File, true},
+      {static_env.File, static_env.SymlinkToFile, true},
+  };
+  for (auto& TC : testCases) {
+    std::error_code ec;
+    TEST_CHECK(equivalent(TC.lhs, TC.rhs, ec) == TC.expect);
+    TEST_CHECK(!ec);
+  }
+}
+
+TEST_CASE(equivalent_reports_error_if_input_dne) {
+  static_test_env static_env;
+  const path E = static_env.File;
+  const path DNE = static_env.DNE;
+  { // Test that an error is reported when either of the paths don't exist
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(equivalent(E, DNE, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ec != GetTestEC());
+  }
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(equivalent(DNE, E, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ec != GetTestEC());
+  }
+  {
+    TEST_CHECK_THROW(filesystem_error, equivalent(DNE, E));
+    TEST_CHECK_THROW(filesystem_error, equivalent(E, DNE));
+  }
+  { // Test that an exception is thrown if both paths do not exist.
+    TEST_CHECK_THROW(filesystem_error, equivalent(DNE, DNE));
+  }
+  {
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(equivalent(DNE, DNE, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ec != GetTestEC());
+  }
+}
+
+#if !defined(__ANDROID__)
+TEST_CASE(equivalent_hardlink_succeeds) {
+  scoped_test_env env;
+  path const file = env.create_file("file", 42);
+  const path hl1 = env.create_hardlink(file, "hl1");
+  const path hl2 = env.create_hardlink(file, "hl2");
+  TEST_CHECK(equivalent(file, hl1));
+  TEST_CHECK(equivalent(file, hl2));
+  TEST_CHECK(equivalent(hl1, hl2));
+}
+#endif
+
+#if !defined(_WIN32) && !defined(__ANDROID__)
+TEST_CASE(equivalent_is_other_succeeds) {
+  scoped_test_env env;
+  path const file = env.create_file("file", 42);
+  const path fifo1 = env.create_fifo("fifo1");
+  const path fifo2 = env.create_fifo("fifo2");
+  // Required to test behavior for inputs where is_other(p) is true.
+  TEST_REQUIRE(is_other(fifo1));
+  TEST_CHECK(!equivalent(file, fifo1));
+  TEST_CHECK(!equivalent(fifo2, file));
+  TEST_CHECK(!equivalent(fifo1, fifo2));
+  TEST_CHECK(equivalent(fifo1, fifo1));
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.exists/exists.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.exists/exists.pass.cpp
new file mode 100644
index 0000000..13e8b95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.exists/exists.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool exists(file_status s) noexcept
+// bool exists(path const& p);
+// bool exists(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(exists_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(exists(s));
+    ASSERT_NOEXCEPT(exists(p, ec));
+    ASSERT_NOT_NOEXCEPT(exists(p));
+}
+
+TEST_CASE(exists_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, true},
+        {file_type::directory, true},
+        {file_type::symlink, true},
+        {file_type::block, true},
+        {file_type::character, true},
+        {file_type::fifo, true},
+        {file_type::socket, true},
+        {file_type::unknown, true}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(exists(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(exists(p) == false);
+
+    TEST_CHECK(exists(static_env.Dir) == true);
+    TEST_CHECK(exists(static_env.Dir / "dne") == false);
+    // Whether <dir>/dne/.. is considered to exist or not is not necessarily
+    // something we need to define, but the platform specific behaviour
+    // does affect a few other tests, so clarify the root cause here.
+#ifdef _WIN32
+    TEST_CHECK(exists(static_env.Dir / "dne" / "..") == true);
+#else
+    TEST_CHECK(exists(static_env.Dir / "dne" / "..") == false);
+#endif
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(exists(p, ec) == false);
+    TEST_CHECK(!ec);
+}
+
+TEST_CASE(test_exists_fails)
+{
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(exists(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, exists(p));
+}
+
+#ifndef _WIN32
+// Checking for the existence of an invalid long path name doesn't
+// trigger errors on windows.
+TEST_CASE(test_name_too_long) {
+    std::string long_name(2500, 'a');
+    const path file(long_name);
+
+    std::error_code ec;
+    TEST_CHECK(exists(file, ec) == false);
+    TEST_CHECK(ec);
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.file_size/file_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.file_size/file_size.pass.cpp
new file mode 100644
index 0000000..2b1cb07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.file_size/file_size.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// uintmax_t file_size(const path& p);
+// uintmax_t file_size(const path& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(file_size_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(file_size(p)), uintmax_t);
+    ASSERT_SAME_TYPE(decltype(file_size(p, ec)), uintmax_t);
+    ASSERT_NOT_NOEXCEPT(file_size(p));
+    ASSERT_NOEXCEPT(file_size(p, ec));
+}
+
+TEST_CASE(file_size_empty_test)
+{
+    static_test_env static_env;
+    const path p = static_env.EmptyFile;
+    TEST_CHECK(file_size(p) == 0);
+    std::error_code ec;
+    TEST_CHECK(file_size(p, ec) == 0);
+}
+
+TEST_CASE(file_size_non_empty)
+{
+    scoped_test_env env;
+    const path p = env.create_file("file", 42);
+    TEST_CHECK(file_size(p) == 42);
+    std::error_code ec;
+    TEST_CHECK(file_size(p, ec) == 42);
+}
+
+TEST_CASE(symlink_test_case)
+{
+    static_test_env static_env;
+    const path p = static_env.File;
+    const path p2 = static_env.SymlinkToFile;
+    TEST_CHECK(file_size(p) == file_size(p2));
+}
+
+TEST_CASE(file_size_error_cases)
+{
+  static_test_env static_env;
+  struct {
+    path p;
+    std::errc expected_err;
+  } TestCases[] = {
+      {static_env.Dir, std::errc::is_a_directory},
+      {static_env.SymlinkToDir, std::errc::is_a_directory},
+      {static_env.BadSymlink, std::errc::no_such_file_or_directory},
+      {static_env.DNE, std::errc::no_such_file_or_directory},
+      {"", std::errc::no_such_file_or_directory}};
+    const uintmax_t expect = static_cast<uintmax_t>(-1);
+    for (auto& TC : TestCases) {
+      std::error_code ec = GetTestEC();
+      TEST_CHECK(file_size(TC.p, ec) == expect);
+      TEST_CHECK(ErrorIs(ec, TC.expected_err));
+
+      ExceptionChecker Checker(TC.p, TC.expected_err, "file_size");
+      TEST_CHECK_THROW_RESULT(filesystem_error, Checker, file_size(TC.p));
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.hard_lk_ct/hard_link_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.hard_lk_ct/hard_link_count.pass.cpp
new file mode 100644
index 0000000..b00683f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.hard_lk_ct/hard_link_count.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// uintmax_t hard_link_count(const path& p);
+// uintmax_t hard_link_count(const path& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(hard_link_count_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(hard_link_count(p)), uintmax_t);
+    ASSERT_SAME_TYPE(decltype(hard_link_count(p, ec)), uintmax_t);
+    ASSERT_NOT_NOEXCEPT(hard_link_count(p));
+    ASSERT_NOEXCEPT(hard_link_count(p, ec));
+}
+
+TEST_CASE(hard_link_count_for_file)
+{
+    static_test_env static_env;
+    TEST_CHECK(hard_link_count(static_env.File) == 1);
+    std::error_code ec;
+    TEST_CHECK(hard_link_count(static_env.File, ec) == 1);
+}
+
+TEST_CASE(hard_link_count_for_directory)
+{
+    static_test_env static_env;
+    uintmax_t DirExpect = 3; // hard link from . .. and Dir2
+    uintmax_t Dir3Expect = 2; // hard link from . ..
+    uintmax_t DirExpectAlt = DirExpect;
+    uintmax_t Dir3ExpectAlt = Dir3Expect;
+#if defined(__APPLE__)
+    // Filesystems formatted with case sensitive hfs+ behave unixish as
+    // expected. Normal hfs+ filesystems report the number of directory
+    // entries instead.
+    DirExpectAlt = 5; // .  ..  Dir2  file1  file2
+    Dir3Expect = 3; // .  ..  file5
+#endif
+    TEST_CHECK(hard_link_count(static_env.Dir) == DirExpect ||
+               hard_link_count(static_env.Dir) == DirExpectAlt ||
+               hard_link_count(static_env.Dir) == 1);
+    TEST_CHECK(hard_link_count(static_env.Dir3) == Dir3Expect ||
+               hard_link_count(static_env.Dir3) == Dir3ExpectAlt ||
+               hard_link_count(static_env.Dir3) == 1);
+
+    std::error_code ec;
+    TEST_CHECK(hard_link_count(static_env.Dir, ec) == DirExpect ||
+               hard_link_count(static_env.Dir, ec) == DirExpectAlt ||
+               hard_link_count(static_env.Dir) == 1);
+    TEST_CHECK(hard_link_count(static_env.Dir3, ec) == Dir3Expect ||
+               hard_link_count(static_env.Dir3, ec) == Dir3ExpectAlt ||
+               hard_link_count(static_env.Dir3) == 1);
+}
+
+#if !defined(__ANDROID__)
+TEST_CASE(hard_link_count_increments_test)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    TEST_CHECK(hard_link_count(file) == 1);
+
+    env.create_hardlink(file, "file_hl");
+    TEST_CHECK(hard_link_count(file) == 2);
+}
+#endif
+
+TEST_CASE(hard_link_count_error_cases)
+{
+    static_test_env static_env;
+    const path testCases[] = {
+        static_env.BadSymlink,
+        static_env.DNE
+    };
+    const uintmax_t expect = static_cast<uintmax_t>(-1);
+    for (auto& TC : testCases) {
+        std::error_code ec;
+        TEST_CHECK(hard_link_count(TC, ec) == expect);
+        TEST_CHECK(ec);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_block_file/is_block_file.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_block_file/is_block_file.pass.cpp
new file mode 100644
index 0000000..d288984
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_block_file/is_block_file.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_block_file(file_status s) noexcept
+// bool is_block_file(path const& p);
+// bool is_block_file(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_block_file_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_block_file(s));
+    ASSERT_NOEXCEPT(is_block_file(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_block_file(p));
+}
+
+TEST_CASE(is_block_file_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, false},
+        {file_type::symlink, false},
+        {file_type::block, true},
+        {file_type::character, false},
+        {file_type::fifo, false},
+        {file_type::socket, false},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_block_file(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_block_file(p) == false);
+}
+
+TEST_CASE(test_is_block_file_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_block_file(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_block_file(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_char_file/is_character_file.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_char_file/is_character_file.pass.cpp
new file mode 100644
index 0000000..738e06c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_char_file/is_character_file.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_character_file(file_status s) noexcept
+// bool is_character_file(path const& p);
+// bool is_character_file(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_character_file_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_character_file(s));
+    ASSERT_NOEXCEPT(is_character_file(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_character_file(p));
+}
+
+TEST_CASE(is_character_file_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, false},
+        {file_type::symlink, false},
+        {file_type::block, false},
+        {file_type::character, true},
+        {file_type::fifo, false},
+        {file_type::socket, false},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_character_file(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_character_file(p) == false);
+}
+
+TEST_CASE(test_is_character_file_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_character_file(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_character_file(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_directory/is_directory.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_directory/is_directory.pass.cpp
new file mode 100644
index 0000000..8b1e41e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_directory/is_directory.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_directory(file_status s) noexcept
+// bool is_directory(path const& p);
+// bool is_directory(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_directory_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_directory(s));
+    ASSERT_NOEXCEPT(is_directory(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_directory(p));
+}
+
+TEST_CASE(is_directory_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, true},
+        {file_type::symlink, false},
+        {file_type::block, false},
+        {file_type::character, false},
+        {file_type::fifo, false},
+        {file_type::socket, false},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_directory(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_directory(p) == false);
+}
+
+TEST_CASE(static_env_test)
+{
+    static_test_env static_env;
+    TEST_CHECK(is_directory(static_env.Dir));
+    TEST_CHECK(is_directory(static_env.SymlinkToDir));
+    TEST_CHECK(!is_directory(static_env.File));
+}
+
+TEST_CASE(test_is_directory_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_dir("dir/dir2");
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_directory(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_directory(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_empty/is_empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_empty/is_empty.pass.cpp
new file mode 100644
index 0000000..89d9313
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_empty/is_empty.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_empty(path const& p);
+// bool is_empty(path const& p, std::error_code& ec);
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_empty_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(is_empty(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_empty(p));
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    std::error_code ec;
+    TEST_CHECK(is_empty(p, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK_THROW(filesystem_error, is_empty(p));
+}
+
+TEST_CASE(test_is_empty_directory)
+{
+    static_test_env static_env;
+    TEST_CHECK(!is_empty(static_env.Dir));
+    TEST_CHECK(!is_empty(static_env.SymlinkToDir));
+}
+
+TEST_CASE(test_is_empty_directory_dynamic)
+{
+    scoped_test_env env;
+    TEST_CHECK(is_empty(env.test_root));
+    env.create_file("foo", 42);
+    TEST_CHECK(!is_empty(env.test_root));
+}
+
+TEST_CASE(test_is_empty_file)
+{
+    static_test_env static_env;
+    TEST_CHECK(is_empty(static_env.EmptyFile));
+    TEST_CHECK(!is_empty(static_env.NonEmptyFile));
+}
+
+TEST_CASE(test_is_empty_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_dir("dir/dir2");
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_empty(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_empty(p));
+}
+
+TEST_CASE(test_directory_access_denied)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path dir = GetWindowsInaccessibleDir();
+    if (dir.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path file1 = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(is_empty(dir, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ec != GetTestEC());
+
+    TEST_CHECK_THROW(filesystem_error, is_empty(dir));
+}
+
+
+#if !defined(_WIN32) && !defined(__ANDROID__)
+TEST_CASE(test_fifo_fails)
+{
+    scoped_test_env env;
+    const path fifo = env.create_fifo("fifo");
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(is_empty(fifo, ec) == false);
+    TEST_CHECK(ec);
+    TEST_CHECK(ec != GetTestEC());
+
+    TEST_CHECK_THROW(filesystem_error, is_empty(fifo));
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_fifo/is_fifo.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_fifo/is_fifo.pass.cpp
new file mode 100644
index 0000000..0169fed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_fifo/is_fifo.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_fifo(file_status s) noexcept
+// bool is_fifo(path const& p);
+// bool is_fifo(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_fifo_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_fifo(s));
+    ASSERT_NOEXCEPT(is_fifo(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_fifo(p));
+}
+
+TEST_CASE(is_fifo_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, false},
+        {file_type::symlink, false},
+        {file_type::block, false},
+        {file_type::character, false},
+        {file_type::fifo, true},
+        {file_type::socket, false},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_fifo(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_fifo(p) == false);
+}
+
+TEST_CASE(test_is_fifo_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_fifo(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_fifo(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_other/is_other.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_other/is_other.pass.cpp
new file mode 100644
index 0000000..f84eb7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_other/is_other.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_other(file_status s) noexcept
+// bool is_other(path const& p);
+// bool is_other(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_other_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_other(s));
+    ASSERT_NOEXCEPT(is_other(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_other(p));
+}
+
+TEST_CASE(is_other_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, false},
+        {file_type::symlink, false},
+        {file_type::block, true},
+        {file_type::character, true},
+        {file_type::fifo, true},
+        {file_type::socket, true},
+        {file_type::unknown, true}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_other(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_other(p) == false);
+}
+
+TEST_CASE(test_is_other_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_other(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_other(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_regular_file/is_regular_file.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_regular_file/is_regular_file.pass.cpp
new file mode 100644
index 0000000..441f15a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_regular_file/is_regular_file.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_regular_file(file_status s) noexcept
+// bool is_regular_file(path const& p);
+// bool is_regular_file(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_regular_file_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_regular_file(s));
+    ASSERT_NOEXCEPT(is_regular_file(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_regular_file(p));
+}
+
+TEST_CASE(is_regular_file_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, true},
+        {file_type::directory, false},
+        {file_type::symlink, false},
+        {file_type::block, false},
+        {file_type::character, false},
+        {file_type::fifo, false},
+        {file_type::socket, false},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_regular_file(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_regular_file(p) == false);
+    std::error_code ec;
+    TEST_CHECK(is_regular_file(p, ec) == false);
+    TEST_CHECK(ec);
+}
+
+TEST_CASE(test_is_regular_file_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_regular_file(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_regular_file(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_socket/is_socket.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_socket/is_socket.pass.cpp
new file mode 100644
index 0000000..21aa537
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_socket/is_socket.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_socket(file_status s) noexcept
+// bool is_socket(path const& p);
+// bool is_socket(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_socket_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_socket(s));
+    ASSERT_NOEXCEPT(is_socket(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_socket(p));
+}
+
+TEST_CASE(is_socket_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, false},
+        {file_type::symlink, false},
+        {file_type::block, false},
+        {file_type::character, false},
+        {file_type::fifo, false},
+        {file_type::socket, true},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_socket(s) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_socket(p) == false);
+}
+
+TEST_CASE(test_is_socket_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_socket(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_socket(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_symlink/is_symlink.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_symlink/is_symlink.pass.cpp
new file mode 100644
index 0000000..d8ec533
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.is_symlink/is_symlink.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool is_symlink(file_status s) noexcept
+// bool is_symlink(path const& p);
+// bool is_symlink(path const& p, std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(is_symlink_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOEXCEPT(is_symlink(s));
+    ASSERT_NOEXCEPT(is_symlink(p, ec));
+    ASSERT_NOT_NOEXCEPT(is_symlink(p));
+}
+
+TEST_CASE(is_symlink_status_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, false},
+        {file_type::regular, false},
+        {file_type::directory, false},
+        {file_type::symlink, true},
+        {file_type::block, false},
+        {file_type::character, false},
+        {file_type::fifo, false},
+        {file_type::socket, false},
+        {file_type::unknown, false}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(is_symlink(s) == TC.expect);
+    }
+}
+
+TEST_CASE(static_env_test)
+{
+    static_test_env static_env;
+    struct TestCase {
+        path p;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {static_env.File, false},
+        {static_env.Dir, false},
+        {static_env.SymlinkToFile, true},
+        {static_env.SymlinkToDir, true},
+        {static_env.BadSymlink, true}
+    };
+    for (auto& TC : testCases) {
+        TEST_CHECK(is_symlink(TC.p) == TC.expect);
+    }
+}
+
+TEST_CASE(test_exist_not_found)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    TEST_CHECK(is_symlink(p) == false);
+    std::error_code ec;
+    TEST_CHECK(is_symlink(p, ec) == false);
+    TEST_CHECK(ec);
+}
+
+TEST_CASE(test_is_symlink_fails)
+{
+    scoped_test_env env;
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path p = GetWindowsInaccessibleDir();
+    if (p.empty())
+        TEST_UNSUPPORTED();
+#else
+    const path dir = env.create_dir("dir");
+    const path p = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+#endif
+
+    std::error_code ec;
+    TEST_CHECK(is_symlink(p, ec) == false);
+    TEST_CHECK(ec);
+
+    TEST_CHECK_THROW(filesystem_error, is_symlink(p));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp
new file mode 100644
index 0000000..cfff7c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp
@@ -0,0 +1,650 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The string reported on errors changed, which makes those tests fail when run
+// against already-released libc++'s.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.15|11.0}}
+
+// <filesystem>
+
+// file_time_type last_write_time(const path& p);
+// file_time_type last_write_time(const path& p, std::error_code& ec) noexcept;
+// void last_write_time(const path& p, file_time_type new_time);
+// void last_write_time(const path& p, file_time_type new_type,
+//                      std::error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+#include <chrono>
+#include <cstdio>
+#include <cstdlib>
+#include <ctime>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+#include <fcntl.h>
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <sys/time.h>
+#include <sys/stat.h>
+#endif
+
+using namespace fs;
+
+using Sec = std::chrono::duration<file_time_type::rep>;
+using Hours = std::chrono::hours;
+using Minutes = std::chrono::minutes;
+using MilliSec = std::chrono::duration<file_time_type::rep, std::milli>;
+using MicroSec = std::chrono::duration<file_time_type::rep, std::micro>;
+using NanoSec = std::chrono::duration<file_time_type::rep, std::nano>;
+using std::chrono::duration_cast;
+
+#ifdef _WIN32
+struct TimeSpec {
+  int64_t tv_sec;
+  int64_t tv_nsec;
+};
+struct StatT {
+  TimeSpec st_atim;
+  TimeSpec st_mtim;
+};
+// There were 369 years and 89 leap days from the Windows epoch
+// (1601) to the Unix epoch (1970).
+#define FILE_TIME_OFFSET_SECS (uint64_t(369 * 365 + 89) * (24 * 60 * 60))
+static TimeSpec filetime_to_timespec(LARGE_INTEGER li) {
+  TimeSpec ret;
+  ret.tv_sec = li.QuadPart / 10000000 - FILE_TIME_OFFSET_SECS;
+  ret.tv_nsec = (li.QuadPart % 10000000) * 100;
+  return ret;
+}
+static int stat_file(const char *path, StatT *buf, int flags) {
+  HANDLE h = CreateFileA(path, FILE_READ_ATTRIBUTES,
+                         FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                         nullptr, OPEN_EXISTING,
+                         FILE_FLAG_BACKUP_SEMANTICS | flags, nullptr);
+  if (h == INVALID_HANDLE_VALUE)
+    return -1;
+  int ret = -1;
+  FILE_BASIC_INFO basic;
+  if (GetFileInformationByHandleEx(h, FileBasicInfo, &basic, sizeof(basic))) {
+    buf->st_mtim = filetime_to_timespec(basic.LastWriteTime);
+    buf->st_atim = filetime_to_timespec(basic.LastAccessTime);
+    ret = 0;
+  }
+  CloseHandle(h);
+  return ret;
+}
+static int stat(const char *path, StatT *buf) {
+  return stat_file(path, buf, 0);
+}
+static int lstat(const char *path, StatT *buf) {
+  return stat_file(path, buf, FILE_FLAG_OPEN_REPARSE_POINT);
+}
+#elif defined(_AIX)
+using TimeSpec = st_timespec_t;
+using StatT = struct stat;
+#else
+using TimeSpec = timespec;
+using StatT = struct stat;
+#endif
+
+#if defined(__APPLE__)
+TimeSpec extract_mtime(StatT const& st) { return st.st_mtimespec; }
+TimeSpec extract_atime(StatT const& st) { return st.st_atimespec; }
+#else
+TimeSpec extract_mtime(StatT const& st) { return st.st_mtim; }
+TimeSpec extract_atime(StatT const& st) { return st.st_atim; }
+#endif
+
+bool ConvertToTimeSpec(TimeSpec& ts, file_time_type ft) {
+  using SecFieldT = decltype(TimeSpec::tv_sec);
+  using NSecFieldT = decltype(TimeSpec::tv_nsec);
+  using SecLim = std::numeric_limits<SecFieldT>;
+  using NSecLim = std::numeric_limits<NSecFieldT>;
+
+  auto secs = duration_cast<Sec>(ft.time_since_epoch());
+  auto nsecs = duration_cast<NanoSec>(ft.time_since_epoch() - secs);
+  if (nsecs.count() < 0) {
+    if (Sec::min().count() > SecLim::min()) {
+      secs += Sec(1);
+      nsecs -= Sec(1);
+    } else {
+      nsecs = NanoSec(0);
+    }
+  }
+  if (SecLim::max() < secs.count() || SecLim::min() > secs.count())
+    return false;
+  if (NSecLim::max() < nsecs.count() || NSecLim::min() > nsecs.count())
+    return false;
+  ts.tv_sec = secs.count();
+  ts.tv_nsec = nsecs.count();
+  return true;
+}
+
+bool ConvertFromTimeSpec(file_time_type& ft, TimeSpec ts) {
+  auto secs_part = duration_cast<file_time_type::duration>(Sec(ts.tv_sec));
+  if (duration_cast<Sec>(secs_part).count() != ts.tv_sec)
+    return false;
+  auto subsecs = duration_cast<file_time_type::duration>(NanoSec(ts.tv_nsec));
+  auto dur = secs_part + subsecs;
+  if (dur < secs_part && subsecs.count() >= 0)
+    return false;
+  ft = file_time_type(dur);
+  return true;
+}
+
+bool CompareTimeExact(TimeSpec ts, TimeSpec ts2) {
+  return ts2.tv_sec == ts.tv_sec && ts2.tv_nsec == ts.tv_nsec;
+}
+bool CompareTimeExact(file_time_type ft, TimeSpec ts) {
+  TimeSpec ts2 = {};
+  if (!ConvertToTimeSpec(ts2, ft))
+    return false;
+  return CompareTimeExact(ts, ts2);
+}
+bool CompareTimeExact(TimeSpec ts, file_time_type ft) {
+  return CompareTimeExact(ft, ts);
+}
+
+struct Times {
+  TimeSpec access, write;
+};
+
+Times GetTimes(path const& p) {
+    StatT st;
+    if (::stat(p.string().c_str(), &st) == -1) {
+        std::error_code ec(errno, std::generic_category());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        throw ec;
+#else
+        std::exit(EXIT_FAILURE);
+#endif
+    }
+    return {extract_atime(st), extract_mtime(st)};
+}
+
+TimeSpec LastAccessTime(path const& p) { return GetTimes(p).access; }
+
+TimeSpec LastWriteTime(path const& p) { return GetTimes(p).write; }
+
+Times GetSymlinkTimes(path const& p) {
+  StatT st;
+  if (::lstat(p.string().c_str(), &st) == -1) {
+    std::error_code ec(errno, std::generic_category());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        throw ec;
+#else
+        std::exit(EXIT_FAILURE);
+#endif
+    }
+    Times res;
+    res.access = extract_atime(st);
+    res.write = extract_mtime(st);
+    return res;
+}
+
+namespace {
+
+// In some configurations, the comparison is tautological and the test is valid.
+// We disable the warning so that we can actually test it regardless.
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wtautological-constant-compare")
+
+static const bool SupportsNegativeTimes = [] {
+  using namespace std::chrono;
+  std::error_code ec;
+  TimeSpec old_write_time, new_write_time;
+  { // WARNING: Do not assert in this scope.
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    old_write_time = LastWriteTime(file);
+    file_time_type tp(seconds(-5));
+    fs::last_write_time(file, tp, ec);
+    new_write_time = LastWriteTime(file);
+  }
+
+  return !ec && new_write_time.tv_sec < 0;
+}();
+
+static const bool SupportsMaxTime = [] {
+  using namespace std::chrono;
+  TimeSpec max_ts = {};
+  if (!ConvertToTimeSpec(max_ts, file_time_type::max()))
+    return false;
+
+  std::error_code ec;
+  TimeSpec old_write_time, new_write_time;
+  { // WARNING: Do not assert in this scope.
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    old_write_time = LastWriteTime(file);
+    file_time_type tp = file_time_type::max();
+    fs::last_write_time(file, tp, ec);
+    new_write_time = LastWriteTime(file);
+  }
+  return !ec && new_write_time.tv_sec > max_ts.tv_sec - 1;
+}();
+
+static const bool SupportsMinTime = [] {
+  using namespace std::chrono;
+  TimeSpec min_ts = {};
+  if (!ConvertToTimeSpec(min_ts, file_time_type::min()))
+    return false;
+  std::error_code ec;
+  TimeSpec old_write_time, new_write_time;
+  { // WARNING: Do not assert in this scope.
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    old_write_time = LastWriteTime(file);
+    file_time_type tp = file_time_type::min();
+    fs::last_write_time(file, tp, ec);
+    new_write_time = LastWriteTime(file);
+  }
+  return !ec && new_write_time.tv_sec < min_ts.tv_sec + 1;
+}();
+
+static const bool SupportsNanosecondRoundTrip = [] {
+  NanoSec ns(3);
+  static_assert(std::is_same<file_time_type::period, std::nano>::value, "");
+
+  // Test that the system call we use to set the times also supports nanosecond
+  // resolution. (utimes does not)
+  file_time_type ft(ns);
+  {
+    scoped_test_env env;
+    const path p = env.create_file("file", 42);
+    last_write_time(p, ft);
+    return last_write_time(p) == ft;
+  }
+}();
+
+// The HFS+ filesystem (used by default before macOS 10.13) stores timestamps at
+// a 1-second granularity, and APFS (now the default) at a 1 nanosecond granularity.
+// 1-second granularity is also the norm on many of the supported filesystems
+// on Linux as well.
+static const bool WorkaroundStatTruncatesToSeconds = [] {
+  MicroSec micros(3);
+  static_assert(std::is_same<file_time_type::period, std::nano>::value, "");
+
+  file_time_type ft(micros);
+  {
+    scoped_test_env env;
+    const path p = env.create_file("file", 42);
+    if (LastWriteTime(p).tv_nsec != 0)
+      return false;
+    last_write_time(p, ft);
+    return last_write_time(p) != ft && LastWriteTime(p).tv_nsec == 0;
+  }
+}();
+
+static const bool SupportsMinRoundTrip = [] {
+  TimeSpec ts = {};
+  if (!ConvertToTimeSpec(ts, file_time_type::min()))
+    return false;
+  file_time_type min_val = {};
+  if (!ConvertFromTimeSpec(min_val, ts))
+    return false;
+  return min_val == file_time_type::min();
+}();
+
+} // end namespace
+
+static bool CompareTime(TimeSpec t1, TimeSpec t2) {
+  if (SupportsNanosecondRoundTrip)
+    return CompareTimeExact(t1, t2);
+  if (t1.tv_sec != t2.tv_sec)
+    return false;
+
+  auto diff = std::abs(t1.tv_nsec - t2.tv_nsec);
+  if (WorkaroundStatTruncatesToSeconds)
+   return diff < duration_cast<NanoSec>(Sec(1)).count();
+  return diff < duration_cast<NanoSec>(MicroSec(1)).count();
+}
+
+static bool CompareTime(file_time_type t1, TimeSpec t2) {
+  TimeSpec ts1 = {};
+  if (!ConvertToTimeSpec(ts1, t1))
+    return false;
+  return CompareTime(ts1, t2);
+}
+
+static bool CompareTime(TimeSpec t1, file_time_type t2) {
+  return CompareTime(t2, t1);
+}
+
+static bool CompareTime(file_time_type t1, file_time_type t2) {
+  auto min_secs = duration_cast<Sec>(file_time_type::min().time_since_epoch());
+  bool IsMin =
+      t1.time_since_epoch() < min_secs || t2.time_since_epoch() < min_secs;
+
+  if (SupportsNanosecondRoundTrip && (!IsMin || SupportsMinRoundTrip))
+    return t1 == t2;
+  if (IsMin) {
+    return duration_cast<Sec>(t1.time_since_epoch()) ==
+           duration_cast<Sec>(t2.time_since_epoch());
+  }
+  file_time_type::duration dur;
+  if (t1 > t2)
+    dur = t1 - t2;
+  else
+    dur = t2 - t1;
+  if (WorkaroundStatTruncatesToSeconds)
+    return duration_cast<Sec>(dur).count() == 0;
+  return duration_cast<MicroSec>(dur).count() == 0;
+}
+
+// Check if a time point is representable on a given filesystem. Check that:
+// (A) 'tp' is representable as a time_t
+// (B) 'tp' is non-negative or the filesystem supports negative times.
+// (C) 'tp' is not 'file_time_type::max()' or the filesystem supports the max
+//     value.
+// (D) 'tp' is not 'file_time_type::min()' or the filesystem supports the min
+//     value.
+inline bool TimeIsRepresentableByFilesystem(file_time_type tp) {
+  TimeSpec ts = {};
+  if (!ConvertToTimeSpec(ts, tp))
+    return false;
+  else if (tp.time_since_epoch().count() < 0 && !SupportsNegativeTimes)
+    return false;
+  else if (tp == file_time_type::max() && !SupportsMaxTime)
+    return false;
+  else if (tp == file_time_type::min() && !SupportsMinTime)
+    return false;
+  return true;
+}
+
+TEST_DIAGNOSTIC_POP
+
+// Create a sub-second duration using the smallest period the filesystem supports.
+file_time_type::duration SubSec(long long val) {
+  using SubSecT = file_time_type::duration;
+  if (SupportsNanosecondRoundTrip) {
+    return duration_cast<SubSecT>(NanoSec(val));
+  } else {
+    return duration_cast<SubSecT>(MicroSec(val));
+  }
+}
+
+TEST_SUITE(last_write_time_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const file_time_type t;
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(last_write_time(p)), file_time_type);
+    ASSERT_SAME_TYPE(decltype(last_write_time(p, ec)), file_time_type);
+    ASSERT_SAME_TYPE(decltype(last_write_time(p, t)), void);
+    ASSERT_SAME_TYPE(decltype(last_write_time(p, t, ec)), void);
+    ASSERT_NOT_NOEXCEPT(last_write_time(p));
+    ASSERT_NOT_NOEXCEPT(last_write_time(p, t));
+    ASSERT_NOEXCEPT(last_write_time(p, ec));
+    ASSERT_NOEXCEPT(last_write_time(p, t, ec));
+}
+
+TEST_CASE(read_last_write_time_static_env_test)
+{
+    static_test_env static_env;
+    using C = file_time_type::clock;
+    file_time_type min = file_time_type::min();
+    // Sleep a little to make sure that static_env.File created above is
+    // strictly older than C::now() even with a coarser clock granularity
+    // in C::now(). (GetSystemTimeAsFileTime on windows has a fairly coarse
+    // granularity.)
+    SleepFor(MilliSec(30));
+    {
+        file_time_type ret = last_write_time(static_env.File);
+        TEST_CHECK(ret != min);
+        TEST_CHECK(ret < C::now());
+        TEST_CHECK(CompareTime(ret, LastWriteTime(static_env.File)));
+
+        file_time_type ret2 = last_write_time(static_env.SymlinkToFile);
+        TEST_CHECK(CompareTime(ret, ret2));
+        TEST_CHECK(CompareTime(ret2, LastWriteTime(static_env.SymlinkToFile)));
+    }
+    {
+        file_time_type ret = last_write_time(static_env.Dir);
+        TEST_CHECK(ret != min);
+        TEST_CHECK(ret < C::now());
+        TEST_CHECK(CompareTime(ret, LastWriteTime(static_env.Dir)));
+
+        file_time_type ret2 = last_write_time(static_env.SymlinkToDir);
+        TEST_CHECK(CompareTime(ret, ret2));
+        TEST_CHECK(CompareTime(ret2, LastWriteTime(static_env.SymlinkToDir)));
+    }
+}
+
+TEST_CASE(get_last_write_time_dynamic_env_test)
+{
+    using Sec = std::chrono::seconds;
+    scoped_test_env env;
+
+    const path file = env.create_file("file", 42);
+    const path dir = env.create_dir("dir");
+
+    const auto file_times = GetTimes(file);
+    const TimeSpec file_write_time = file_times.write;
+    const auto dir_times = GetTimes(dir);
+    const TimeSpec dir_write_time = dir_times.write;
+
+    file_time_type ftime = last_write_time(file);
+    TEST_CHECK(CompareTime(ftime, file_write_time));
+
+    file_time_type dtime = last_write_time(dir);
+    TEST_CHECK(CompareTime(dtime, dir_write_time));
+
+    SleepFor(Sec(2));
+
+    // update file and add a file to the directory. Make sure the times increase.
+    std::FILE* of = std::fopen(file.string().c_str(), "a");
+    std::fwrite("hello", 1, sizeof("hello"), of);
+    std::fclose(of);
+    env.create_file("dir/file1", 1);
+
+    file_time_type ftime2 = last_write_time(file);
+    file_time_type dtime2 = last_write_time(dir);
+
+    TEST_CHECK(ftime2 > ftime);
+    TEST_CHECK(dtime2 > dtime);
+    TEST_CHECK(CompareTime(LastWriteTime(file), ftime2));
+    TEST_CHECK(CompareTime(LastWriteTime(dir), dtime2));
+}
+
+
+TEST_CASE(set_last_write_time_dynamic_env_test)
+{
+    using Clock = file_time_type::clock;
+    scoped_test_env env;
+
+    const path file = env.create_file("file", 42);
+    const path dir = env.create_dir("dir");
+    const auto now = Clock::now();
+    const file_time_type epoch_time = now - now.time_since_epoch();
+
+    const file_time_type future_time = now + Hours(3) + Sec(42) + SubSec(17);
+    const file_time_type past_time = now - Minutes(3) - Sec(42) - SubSec(17);
+    const file_time_type before_epoch_time =
+        epoch_time - Minutes(3) - Sec(42) - SubSec(17);
+    (void)before_epoch_time;
+    // FreeBSD has a bug in their utimes implementation where the time is not update
+    // when the number of seconds is '-1'.
+#if defined(__FreeBSD__) || defined(__NetBSD__)
+    const file_time_type just_before_epoch_time =
+        epoch_time - Sec(2) - SubSec(17);
+#else
+    const file_time_type just_before_epoch_time = epoch_time - SubSec(17);
+    (void)just_before_epoch_time;
+#endif
+
+    struct TestCase {
+      const char * case_name;
+      path p;
+      file_time_type new_time;
+    } cases[] = {
+        {"file, epoch_time", file, epoch_time},
+        {"dir, epoch_time", dir, epoch_time},
+        {"file, future_time", file, future_time},
+        {"dir, future_time", dir, future_time},
+        {"file, past_time", file, past_time},
+        {"dir, past_time", dir, past_time}
+        // Exclude file time types of before epoch time from testing on AIX
+        // because AIX system call utimensat() does not accept the times
+        // parameter having a negative tv_sec or tv_nsec field.
+#if !defined(_AIX)
+        ,
+        {"file, before_epoch_time", file, before_epoch_time},
+        {"dir, before_epoch_time", dir, before_epoch_time},
+        {"file, just_before_epoch_time", file, just_before_epoch_time},
+        {"dir, just_before_epoch_time", dir, just_before_epoch_time}
+#endif
+    };
+
+    for (const auto& TC : cases) {
+        const auto old_times = GetTimes(TC.p);
+        file_time_type old_time;
+        TEST_REQUIRE(ConvertFromTimeSpec(old_time, old_times.write));
+
+        std::error_code ec = GetTestEC();
+        last_write_time(TC.p, TC.new_time, ec);
+        TEST_CHECK(!ec);
+
+        ec = GetTestEC();
+        file_time_type  got_time = last_write_time(TC.p, ec);
+        TEST_REQUIRE(!ec);
+
+        if (TimeIsRepresentableByFilesystem(TC.new_time)) {
+            TEST_CHECK(got_time != old_time);
+            TEST_CHECK(CompareTime(got_time, TC.new_time));
+            TEST_CHECK(CompareTime(LastAccessTime(TC.p), old_times.access));
+        }
+    }
+}
+
+TEST_CASE(last_write_time_symlink_test)
+{
+    using Clock = file_time_type::clock;
+
+    scoped_test_env env;
+
+    const path file = env.create_file("file", 42);
+    const path sym = env.create_symlink("file", "sym");
+
+    const file_time_type new_time = Clock::now() + Hours(3);
+
+    const auto old_times = GetTimes(sym);
+    const auto old_sym_times = GetSymlinkTimes(sym);
+
+    std::error_code ec = GetTestEC();
+    last_write_time(sym, new_time, ec);
+    TEST_CHECK(!ec);
+
+    file_time_type  got_time = last_write_time(sym);
+    TEST_CHECK(!CompareTime(got_time, old_times.write));
+    if (!WorkaroundStatTruncatesToSeconds) {
+      TEST_CHECK(got_time == new_time);
+    } else {
+      TEST_CHECK(CompareTime(got_time, new_time));
+    }
+
+    TEST_CHECK(CompareTime(LastWriteTime(file), new_time));
+    TEST_CHECK(CompareTime(LastAccessTime(sym), old_times.access));
+    Times sym_times = GetSymlinkTimes(sym);
+    TEST_CHECK(CompareTime(sym_times.write, old_sym_times.write));
+}
+
+
+TEST_CASE(test_write_min_time)
+{
+    scoped_test_env env;
+    const path p = env.create_file("file", 42);
+    const file_time_type old_time = last_write_time(p);
+    file_time_type new_time = file_time_type::min();
+
+    std::error_code ec = GetTestEC();
+    last_write_time(p, new_time, ec);
+    file_time_type tt = last_write_time(p);
+
+    if (TimeIsRepresentableByFilesystem(new_time)) {
+        TEST_CHECK(!ec);
+        TEST_CHECK(CompareTime(tt, new_time));
+
+        last_write_time(p, old_time);
+        new_time = file_time_type::min() + SubSec(1);
+
+        ec = GetTestEC();
+        last_write_time(p, new_time, ec);
+        tt = last_write_time(p);
+
+        if (TimeIsRepresentableByFilesystem(new_time)) {
+            TEST_CHECK(!ec);
+            TEST_CHECK(CompareTime(tt, new_time));
+        } else {
+          TEST_CHECK(ErrorIs(ec, std::errc::value_too_large));
+          TEST_CHECK(tt == old_time);
+        }
+    } else {
+      TEST_CHECK(ErrorIs(ec, std::errc::value_too_large));
+      TEST_CHECK(tt == old_time);
+    }
+}
+
+TEST_CASE(test_write_max_time) {
+  scoped_test_env env;
+  const path p = env.create_file("file", 42);
+  const file_time_type old_time = last_write_time(p);
+  file_time_type new_time = file_time_type::max();
+
+  std::error_code ec = GetTestEC();
+  last_write_time(p, new_time, ec);
+  file_time_type tt = last_write_time(p);
+
+  if (TimeIsRepresentableByFilesystem(new_time)) {
+    TEST_CHECK(!ec);
+    TEST_CHECK(CompareTime(tt, new_time));
+  } else {
+    TEST_CHECK(ErrorIs(ec, std::errc::value_too_large));
+    TEST_CHECK(tt == old_time);
+  }
+}
+
+TEST_CASE(test_value_on_failure)
+{
+    static_test_env static_env;
+    const path p = static_env.DNE;
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(last_write_time(p, ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::no_such_file_or_directory));
+}
+
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+TEST_CASE(test_exists_fails)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path file = env.create_file("dir/file", 42);
+    permissions(dir, perms::none);
+
+    std::error_code ec = GetTestEC();
+    TEST_CHECK(last_write_time(file, ec) == file_time_type::min());
+    TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+
+    ExceptionChecker Checker(file, std::errc::permission_denied,
+                             "last_write_time");
+    TEST_CHECK_THROW_RESULT(filesystem_error, Checker, last_write_time(file));
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.permissions/permissions.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.permissions/permissions.pass.cpp
new file mode 100644
index 0000000..176de03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.permissions/permissions.pass.cpp
@@ -0,0 +1,202 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void permissions(const path& p, perms prms,
+//                  perm_options opts = perm_options::replace);
+// void permissions(const path& p, perms prms, std::error_code& ec) noexcept;
+// void permissions(const path& p, perms prms, perm_options opts, std::error_code);
+
+
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+using PR = fs::perms;
+
+TEST_SUITE(filesystem_permissions_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    const perms pr{}; ((void)pr);
+    const perm_options opts{}; ((void)opts);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(fs::permissions(p, pr));
+    ASSERT_NOT_NOEXCEPT(fs::permissions(p, pr, opts));
+    ASSERT_NOEXCEPT(fs::permissions(p, pr, ec));
+    LIBCPP_ONLY(ASSERT_NOT_NOEXCEPT(fs::permissions(p, pr, opts, ec)));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, fs::perms opts,
+                         const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::permissions(f, opts);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == ""
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)opts); ((void)ec);
+        return true;
+#endif
+    };
+
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path dne_sym = env.create_symlink(dne, "dne_sym");
+    { // !exists
+        std::error_code ec = GetTestEC();
+        fs::permissions(dne, fs::perms{}, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(ec != GetTestEC());
+        TEST_CHECK(checkThrow(dne, fs::perms{}, ec));
+    }
+    {
+        std::error_code ec = GetTestEC();
+        fs::permissions(dne_sym, fs::perms{}, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(ec != GetTestEC());
+        TEST_CHECK(checkThrow(dne_sym, fs::perms{}, ec));
+    }
+}
+
+TEST_CASE(basic_permissions_test)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file1", 42);
+    const path dir = env.create_dir("dir1");
+    const path file_for_sym = env.create_file("file2", 42);
+    const path sym = env.create_symlink(file_for_sym, "sym");
+    const perm_options AP = perm_options::add;
+    const perm_options RP = perm_options::remove;
+    const perm_options NF = perm_options::nofollow;
+    struct TestCase {
+      path p;
+      perms set_perms;
+      perms expected;
+      perm_options opts;
+      TestCase(path xp, perms xperms, perms xexpect,
+               perm_options xopts = perm_options::replace)
+          : p(xp), set_perms(xperms), expected(xexpect), opts(xopts) {}
+    } cases[] = {
+        // test file
+        {file, perms::none, perms::none},
+        {file, perms::owner_all, perms::owner_all},
+        {file, perms::group_all, perms::owner_all | perms::group_all, AP},
+        {file, perms::group_all, perms::owner_all, RP},
+        // test directory
+        {dir, perms::none, perms::none},
+        {dir, perms::owner_all, perms::owner_all},
+        {dir, perms::group_all, perms::owner_all | perms::group_all, AP},
+        {dir, perms::group_all, perms::owner_all, RP},
+        // test symlink without symlink_nofollow
+        {sym, perms::none, perms::none},
+        {sym, perms::owner_all, perms::owner_all},
+        {sym, perms::group_all, perms::owner_all | perms::group_all, AP},
+        {sym, perms::group_all, perms::owner_all, RP},
+        // test non-symlink with symlink_nofollow. The last test on file/dir
+        // will have set their permissions to perms::owner_all
+        {file, perms::group_all, perms::owner_all | perms::group_all, AP | NF},
+        {dir,  perms::group_all, perms::owner_all | perms::group_all, AP | NF}
+    };
+    for (auto const& TC : cases) {
+        TEST_CHECK(status(TC.p).permissions() != TC.expected);
+        {
+          std::error_code ec = GetTestEC();
+          permissions(TC.p, TC.set_perms, TC.opts, ec);
+          TEST_CHECK(!ec);
+          auto pp = status(TC.p).permissions();
+          TEST_CHECK(pp == NormalizeExpectedPerms(TC.expected));
+        }
+        if (TC.opts == perm_options::replace) {
+          std::error_code ec = GetTestEC();
+          permissions(TC.p, TC.set_perms, ec);
+          TEST_CHECK(!ec);
+          auto pp = status(TC.p).permissions();
+          TEST_CHECK(pp == NormalizeExpectedPerms(TC.expected));
+        }
+    }
+}
+
+#if !defined(_WIN32) && !defined(__ANDROID__)
+// This test isn't currently meaningful on Windows; the Windows file
+// permissions visible via std::filesystem doesn't show any difference
+// between owner/group/others.
+//
+// Skip the test on Android because the behavior varies widely. A device
+// may do one of these things:
+//  - Ignore nofollow and modify the target (e.g. L emulator).
+//  - Refuse to let the shell user create a symlink (e.g. physical L device,
+//    volantis or Nexus 7 2013).
+//  - Change the symlink's permissions successfully (e.g. emulators from
+//    Android M to Q, ext4 filesystem).
+//  - Change the symlink's permissions, then fail with operation_not_supported
+//    anyway (e.g. R emulator and later, ext4 filesystem, see Google internal
+//    bug http://b/262631136).
+//  - Do nothing and fail with operation_not_supported (e.g. devices using f2fs
+//    for /data/local/tmp).
+TEST_CASE(test_no_resolve_symlink_on_symlink)
+{
+    scoped_test_env env;
+    const path file = env.create_file("file", 42);
+    const path sym = env.create_symlink(file, "sym");
+    const auto file_perms = status(file).permissions();
+
+    struct TestCase {
+        perms set_perms;
+        perms expected; // only expected on platform that support symlink perms.
+        perm_options opts = perm_options::replace;
+        TestCase(perms xperms, perms xexpect,
+               perm_options xopts = perm_options::replace)
+          : set_perms(xperms), expected(xexpect), opts(xopts) {}
+    } cases[] = {
+        {perms::owner_all, perms::owner_all},
+        {perms::group_all, perms::owner_all | perms::group_all, perm_options::add},
+        {perms::owner_all, perms::group_all, perm_options::remove},
+    };
+    for (auto const& TC : cases) {
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(_AIX)
+        // On OS X symlink permissions are supported. We should get an empty
+        // error code and the expected permissions.
+        const auto expected_link_perms = TC.expected;
+        std::error_code expected_ec;
+#else
+        // On linux symlink permissions are not supported. The error code should
+        // be 'operation_not_supported' and the symlink permissions should be
+        // unchanged.
+        const auto expected_link_perms = symlink_status(sym).permissions();
+        std::error_code expected_ec = std::make_error_code(std::errc::operation_not_supported);
+#endif
+        std::error_code ec = GetTestEC();
+        permissions(sym, TC.set_perms, TC.opts | perm_options::nofollow, ec);
+        if (expected_ec)
+            TEST_CHECK(ErrorIs(ec, static_cast<std::errc>(expected_ec.value())));
+        else
+            TEST_CHECK(!ec);
+        TEST_CHECK(status(file).permissions() == file_perms);
+        TEST_CHECK(symlink_status(sym).permissions() == expected_link_perms);
+    }
+}
+#endif
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.proximate/proximate.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.proximate/proximate.pass.cpp
new file mode 100644
index 0000000..b1341ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.proximate/proximate.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path proximate(const path& p, error_code &ec)
+// path proximate(const path& p, const path& base = current_path())
+// path proximate(const path& p, const path& base, error_code& ec);
+
+#include "filesystem_include.h"
+#include <cassert>
+#include <cstdio>
+
+#include "test_macros.h"
+#include "count_new.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+
+static int count_path_elems(const fs::path& p) {
+  int count = 0;
+  for (auto&& elem : p) {
+    if (elem != p.root_name() && elem != "/" && elem != "")
+      ++count;
+  }
+  return count;
+}
+
+TEST_SUITE(filesystem_proximate_path_test_suite)
+
+
+TEST_CASE(signature_test)
+{
+    using fs::path;
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(proximate(p));
+    ASSERT_NOT_NOEXCEPT(proximate(p, p));
+    ASSERT_NOT_NOEXCEPT(proximate(p, ec));
+    ASSERT_NOT_NOEXCEPT(proximate(p, p, ec));
+}
+
+TEST_CASE(basic_test) {
+  using fs::path;
+  const path cwd = fs::current_path();
+  const path parent_cwd = cwd.parent_path();
+  const path curdir = cwd.filename();
+  TEST_REQUIRE(!cwd.native().empty());
+  int cwd_depth = count_path_elems(cwd);
+  path dot_dot_to_root;
+  for (int i=0; i < cwd_depth; ++i)
+    dot_dot_to_root /= "..";
+  path relative_cwd = cwd.native().substr(cwd.root_path().native().size());
+  // clang-format off
+  struct {
+    fs::path input;
+    fs::path base;
+    fs::path expect;
+  } TestCases[] = {
+      {"", "", "."},
+      {cwd, "a", ".."},
+      {parent_cwd, "a", "../.."},
+      {"a", cwd, "a"},
+      {"a", parent_cwd, curdir / "a"},
+      {"/", "a", dot_dot_to_root / ".."},
+      {"/", "a/b", dot_dot_to_root / "../.."},
+      {"/", "a/b/", dot_dot_to_root / "../.."},
+      {"a", "/", relative_cwd / "a"},
+      {"a/b", "/", relative_cwd / "a/b"},
+      {"a", "/net", ".." / relative_cwd / "a"},
+#ifdef _WIN32
+      {"//foo/", "//foo", "//foo/"},
+      {"//foo", "//foo/", "//foo"},
+#else
+      {"//foo/", "//foo", "."},
+      {"//foo", "//foo/", "."},
+#endif
+      {"//foo", "//foo", "."},
+      {"//foo/", "//foo/", "."},
+#ifdef _WIN32
+      {"//foo", "a", "//foo"},
+      {"//foo/a", "//bar", "//foo/a"},
+      {"//foo/a", "//bar/", "//foo/a"},
+      {"//foo/a", "b", "//foo/a"},
+      {"//foo/a", "/b", "//foo/a"},
+      {"//foo/a", "//bar/b", "//foo/a"},
+      // Using X: instead of C: to avoid influence from the CWD being under C:
+      {"X:/a", "X:/b", "../a"},
+      {"X:/a", "X:b", "X:/a"},
+      {"X:/a", "Y:/a", "X:/a"},
+      {"X:/a", "Y:/b", "X:/a"},
+      {"X:/a", "Y:b", "X:/a"},
+      {"X:a", "X:/b", "X:a"},
+      {"X:a", "X:b", "../a"},
+      {"X:a", "Y:/a", "X:a"},
+      {"X:a", "Y:/b", "X:a"},
+      {"X:a", "Y:b", "X:a"},
+#else
+      {"//foo", "a", dot_dot_to_root / "../foo"},
+      {"//foo/a", "//bar", "../foo/a"},
+      {"//foo/a", "//bar/", "../foo/a"},
+      {"//foo/a", "b", dot_dot_to_root / "../foo/a"},
+      {"//foo/a", "/b", "../foo/a"},
+      {"//foo/a", "//bar/b", "../../foo/a"},
+      {"X:/a", "X:/b", "../a"},
+      {"X:/a", "X:b", "../X:/a"},
+      {"X:/a", "Y:/a", "../../X:/a"},
+      {"X:/a", "Y:/b", "../../X:/a"},
+      {"X:/a", "Y:b", "../X:/a"},
+      {"X:a", "X:/b", "../../X:a"},
+      {"X:a", "X:b", "../X:a"},
+      {"X:a", "Y:/a", "../../X:a"},
+      {"X:a", "Y:/b", "../../X:a"},
+      {"X:a", "Y:b", "../X:a"},
+#endif
+      {"a", "a", "."},
+      {"a/b", "a/b", "."},
+      {"a/b/c/", "a/b/c/", "."},
+      {"//foo/a/b", "//foo/a/b", "."},
+      {"/a/d", "/a/b/c", "../../d"},
+      {"/a/b/c", "/a/d", "../b/c"},
+      {"a/b/c", "a", "b/c"},
+      {"a/b/c", "a/b/c/x/y", "../.."},
+      {"a/b/c", "a/b/c", "."},
+      {"a/b", "c/d", "../../a/b"}
+  };
+  // clang-format on
+  int ID = 0;
+  for (auto& TC : TestCases) {
+    ++ID;
+    std::error_code ec = GetTestEC();
+    fs::path p = TC.input;
+    const fs::path output = fs::proximate(p, TC.base, ec);
+    fs::path expect = TC.expect;
+    expect.make_preferred();
+    if (ec) {
+      TEST_CHECK(!ec);
+      std::fprintf(stderr, "TEST CASE #%d FAILED:\n"
+                  "  Input: '%s'\n"
+                  "  Base: '%s'\n"
+                  "  Expected: '%s'\n",
+        ID, TC.input.string().c_str(), TC.base.string().c_str(),
+        expect.string().c_str());
+    } else if (!PathEq(output, expect)) {
+      TEST_CHECK(PathEq(output, expect));
+
+      const path canon_input = fs::weakly_canonical(TC.input);
+      const path canon_base = fs::weakly_canonical(TC.base);
+      const path lexically_p = canon_input.lexically_proximate(canon_base);
+      std::fprintf(stderr, "TEST CASE #%d FAILED:\n"
+                  "  Input: '%s'\n"
+                  "  Base: '%s'\n"
+                  "  Expected: '%s'\n"
+                  "  Output: '%s'\n"
+                  "  Lex Prox: '%s'\n"
+                  "  Canon Input: '%s'\n"
+                  "  Canon Base: '%s'\n",
+        ID, TC.input.string().c_str(), TC.base.string().c_str(),
+        expect.string().c_str(), output.string().c_str(),
+        lexically_p.string().c_str(), canon_input.string().c_str(),
+        canon_base.string().c_str());
+    }
+  }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.read_symlink/read_symlink.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.read_symlink/read_symlink.pass.cpp
new file mode 100644
index 0000000..ae94253
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.read_symlink/read_symlink.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path read_symlink(const path& p);
+// path read_symlink(const path& p, error_code& ec);
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_read_symlink_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::read_symlink(p)), fs::path);
+    ASSERT_SAME_TYPE(decltype(fs::read_symlink(p, ec)), fs::path);
+
+    ASSERT_NOT_NOEXCEPT(fs::read_symlink(p));
+    // Not noexcept because of narrow contract
+    ASSERT_NOT_NOEXCEPT(fs::read_symlink(p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            (void)fs::read_symlink(f);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == ""
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)ec);
+        return true;
+#endif
+    };
+
+    scoped_test_env env;
+    const path cases[] = {
+        env.make_env_path("dne"),
+        env.create_file("file", 42),
+        env.create_dir("dir")
+    };
+    for (path const& p : cases) {
+        std::error_code ec;
+        const path ret = fs::read_symlink(p, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(ret == path{});
+        TEST_CHECK(checkThrow(p, ec));
+    }
+
+}
+
+TEST_CASE(basic_symlink_test)
+{
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path file = env.create_file("file", 42);
+    const path dir = env.create_dir("dir");
+    const path link = env.create_symlink(dne, "link");
+    const path nested_link = env.make_env_path("nested_link");
+    create_symlink(link, nested_link);
+    struct TestCase {
+      path symlink;
+      path expected;
+    } testCases[] = {
+        {env.create_symlink(dne, "dne_link"), dne},
+        {env.create_symlink(file, "file_link"), file},
+        {env.create_directory_symlink(dir, "dir_link"), dir},
+        {nested_link, link}
+    };
+    for (auto& TC : testCases) {
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        const path ret = read_symlink(TC.symlink, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(ret == TC.expected);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.relative/relative.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.relative/relative.pass.cpp
new file mode 100644
index 0000000..0c05605
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.relative/relative.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path proximate(const path& p, error_code &ec)
+// path proximate(const path& p, const path& base = current_path())
+// path proximate(const path& p, const path& base, error_code& ec);
+
+#include "filesystem_include.h"
+#include <string>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+
+TEST_SUITE(filesystem_proximate_path_test_suite)
+
+TEST_CASE(test_signature_0) {
+  fs::path p("");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(fs::current_path()));
+}
+
+TEST_CASE(test_signature_1) {
+  fs::path p(".");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(fs::current_path()));
+}
+
+TEST_CASE(test_signature_2) {
+  static_test_env static_env;
+  fs::path p(static_env.File);
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.File));
+}
+
+TEST_CASE(test_signature_3) {
+  static_test_env static_env;
+  fs::path p(static_env.Dir);
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir));
+}
+
+TEST_CASE(test_signature_4) {
+  static_test_env static_env;
+  fs::path p(static_env.SymlinkToDir);
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir));
+}
+
+TEST_CASE(test_signature_5) {
+  static_test_env static_env;
+  fs::path p(static_env.SymlinkToDir / "dir2/.");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir / "dir2"));
+}
+
+TEST_CASE(test_signature_6) {
+  static_test_env static_env;
+  // FIXME? If the trailing separator occurs in a part of the path that exists,
+  // it is omitted. Otherwise it is added to the end of the result.
+  fs::path p(static_env.SymlinkToDir / "dir2/./");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir / "dir2"));
+}
+
+TEST_CASE(test_signature_7) {
+  static_test_env static_env;
+  fs::path p(static_env.SymlinkToDir / "dir2/DNE/./");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir / "dir2/DNE/"));
+}
+
+TEST_CASE(test_signature_8) {
+  static_test_env static_env;
+  fs::path p(static_env.SymlinkToDir / "dir2");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir2));
+}
+
+TEST_CASE(test_signature_9) {
+  static_test_env static_env;
+  fs::path p(static_env.SymlinkToDir / "dir2/../dir2/DNE/..");
+  const fs::path output = fs::weakly_canonical(p);
+  // weakly_canonical has a quirk - if the path is considered to exist,
+  // it's returned without a trailing slash, otherwise it's returned with
+  // one (see a note in fs.op.weakly_canonical/weakly_canonical.pass.cpp).
+  // On Windows, a path like existent/nonexistentsubdir/.. is considered
+  // to exist, on posix it's considered to not exist. Therefore, the
+  // result here differs in the trailing slash.
+#ifdef _WIN32
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir2));
+#else
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir2 / ""));
+#endif
+}
+
+TEST_CASE(test_signature_10) {
+  static_test_env static_env;
+  fs::path p(static_env.SymlinkToDir / "dir2/dir3/../DNE/DNE2");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir2 / "DNE/DNE2"));
+}
+
+TEST_CASE(test_signature_11) {
+  static_test_env static_env;
+  fs::path p(static_env.Dir / "../dir1");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir));
+}
+
+TEST_CASE(test_signature_12) {
+  static_test_env static_env;
+  fs::path p(static_env.Dir / "./.");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir));
+}
+
+TEST_CASE(test_signature_13) {
+  static_test_env static_env;
+  fs::path p(static_env.Dir / "DNE/../foo");
+  const fs::path output = fs::weakly_canonical(p);
+  TEST_CHECK(output == fs::path::string_type(static_env.Dir / "foo"));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove/remove.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove/remove.pass.cpp
new file mode 100644
index 0000000..950ed73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove/remove.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool remove(const path& p);
+// bool remove(const path& p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_remove_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::remove(p)), bool);
+    ASSERT_SAME_TYPE(decltype(fs::remove(p, ec)), bool);
+
+    ASSERT_NOT_NOEXCEPT(fs::remove(p));
+    ASSERT_NOEXCEPT(fs::remove(p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::remove(f);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == ""
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)ec);
+        return true;
+#endif
+    };
+    scoped_test_env env;
+    const path non_empty_dir = env.create_dir("dir");
+    env.create_file(non_empty_dir / "file1", 42);
+    const path bad_perms_dir = env.create_dir("bad_dir");
+    const path file_in_bad_dir = env.create_file(bad_perms_dir / "file", 42);
+    permissions(bad_perms_dir, perms::none);
+    const path testCases[] = {
+        non_empty_dir,
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+        // Windows doesn't support setting perms::none on a directory to
+        // stop it from being accessed. And a fictional file under
+        // GetWindowsInaccessibleDir() doesn't cause fs::remove() to report
+        // errors, it just returns false cleanly.
+        file_in_bad_dir,
+#endif
+    };
+    for (auto& p : testCases) {
+        std::error_code ec;
+
+        TEST_CHECK(!fs::remove(p, ec));
+        TEST_CHECK(ec);
+        TEST_CHECK(checkThrow(p, ec));
+    }
+
+    // PR#35780
+    const path testCasesNonexistant[] = {
+        "",
+        env.make_env_path("dne")
+    };
+
+    for (auto& p : testCasesNonexistant) {
+        std::error_code ec;
+
+        TEST_CHECK(!fs::remove(p, ec));
+        TEST_CHECK(!ec);
+    }
+}
+
+TEST_CASE(basic_remove_test)
+{
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path link = env.create_symlink(dne, "link");
+    const path nested_link = env.make_env_path("nested_link");
+    create_symlink(link, nested_link);
+    const path testCases[] = {
+        env.create_file("file", 42),
+        env.create_dir("empty_dir"),
+        nested_link,
+        link
+    };
+    for (auto& p : testCases) {
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        TEST_CHECK(remove(p, ec));
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(symlink_status(p)));
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove_all/remove_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove_all/remove_all.pass.cpp
new file mode 100644
index 0000000..7ac9ddc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove_all/remove_all.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// uintmax_t remove_all(const path& p);
+// uintmax_t remove_all(const path& p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_remove_all_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::remove_all(p)), std::uintmax_t);
+    ASSERT_SAME_TYPE(decltype(fs::remove_all(p, ec)), std::uintmax_t);
+
+    ASSERT_NOT_NOEXCEPT(fs::remove_all(p));
+    ASSERT_NOT_NOEXCEPT(fs::remove_all(p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    scoped_test_env env;
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+    auto checkThrow = [](path const& f, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::remove_all(f);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == ""
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)ec);
+        return true;
+#endif
+    };
+    const path non_empty_dir = env.create_dir("dir");
+    env.create_file(non_empty_dir / "file1", 42);
+    const path bad_perms_dir = env.create_dir("bad_dir");
+    const path file_in_bad_dir = env.create_file(bad_perms_dir / "file", 42);
+    permissions(bad_perms_dir, perms::none);
+    const path bad_perms_file = env.create_file("file2", 42);
+    permissions(bad_perms_file, perms::none);
+
+    const path testCases[] = {
+        file_in_bad_dir
+    };
+    const auto BadRet = static_cast<std::uintmax_t>(-1);
+    for (auto& p : testCases) {
+        std::error_code ec;
+
+        TEST_CHECK(fs::remove_all(p, ec) == BadRet);
+        TEST_CHECK(ec);
+        TEST_CHECK(checkThrow(p, ec));
+    }
+#endif
+
+    // PR#35780
+    const path testCasesNonexistant[] = {
+        "",
+        env.make_env_path("dne")
+    };
+    for (auto &p : testCasesNonexistant) {
+        std::error_code ec;
+
+        TEST_CHECK(fs::remove_all(p, ec) == 0);
+        TEST_CHECK(!ec);
+    }
+}
+
+TEST_CASE(basic_remove_all_test)
+{
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path link = env.create_symlink(dne, "link");
+    const path nested_link = env.make_env_path("nested_link");
+    create_symlink(link, nested_link);
+    const path testCases[] = {
+        env.create_file("file", 42),
+        env.create_dir("empty_dir"),
+        nested_link,
+        link
+    };
+    for (auto& p : testCases) {
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        TEST_CHECK(remove(p, ec));
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(symlink_status(p)));
+    }
+}
+
+TEST_CASE(symlink_to_dir)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path file = env.create_file(dir / "file", 42);
+    const path link = env.create_directory_symlink(dir, "sym");
+
+    {
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        TEST_CHECK(remove_all(link, ec) == 1);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(symlink_status(link)));
+        TEST_CHECK(exists(dir));
+        TEST_CHECK(exists(file));
+    }
+}
+
+
+TEST_CASE(nested_dir)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path dir1 = env.create_dir(dir / "dir1");
+    const path out_of_dir_file = env.create_file("file1", 42);
+    const path all_files[] = {
+        dir, dir1,
+        env.create_file(dir / "file1", 42),
+        env.create_symlink(out_of_dir_file, dir / "sym1"),
+        env.create_file(dir1 / "file2", 42),
+        env.create_directory_symlink(dir, dir1 / "sym2")
+    };
+    const std::size_t expected_count = sizeof(all_files) / sizeof(all_files[0]);
+
+    std::error_code ec = std::make_error_code(std::errc::address_in_use);
+    TEST_CHECK(remove_all(dir, ec) == expected_count);
+    TEST_CHECK(!ec);
+    for (auto const& p : all_files) {
+        TEST_CHECK(!exists(symlink_status(p)));
+    }
+    TEST_CHECK(exists(out_of_dir_file));
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove_all/toctou.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove_all/toctou.pass.cpp
new file mode 100644
index 0000000..8831912
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.remove_all/toctou.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: no-threads
+
+// <filesystem>
+
+// Test for a time-of-check to time-of-use issue with std::filesystem::remove_all.
+//
+// Scenario:
+// The attacker wants to get directory contents deleted, to which he does not have access.
+// He has a way to get a privileged binary call `std::filesystem::remove_all()` on a
+// directory he controls, e.g. in his home directory.
+//
+// The POC sets up the `attack_dest/attack_file` which the attacker wants to have deleted.
+// The attacker repeatedly creates a directory and replaces it with a symlink from
+// `victim_del` to `attack_dest` while the victim code calls `std::filesystem::remove_all()`
+// on `victim_del`. After a few seconds the attack has succeeded and
+// `attack_dest/attack_file` is deleted.
+//
+// This is taken from https://github.com/rust-lang/wg-security-response/blob/master/patches/CVE-2022-21658/0002-Fix-CVE-2022-21658-for-UNIX-like.patch
+
+// This test requires a dylib containing the fix shipped in https://reviews.llvm.org/D118134.
+// We use UNSUPPORTED instead of XFAIL because the test might not fail reliably.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx11.0
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx12.{{0|1|2}}
+
+// Windows doesn't support the necessary APIs to mitigate this issue.
+// UNSUPPORTED: target={{.+}}-windows-{{.+}}
+
+#include <cstdio>
+#include <filesystem>
+#include <system_error>
+#include <thread>
+
+#include "filesystem_include.h"
+#include "filesystem_test_helper.h"
+
+int main(int, char**) {
+  scoped_test_env env;
+  fs::path const tmpdir = env.create_dir("mydir");
+  fs::path const victim_del_path = tmpdir / "victim_del";
+  fs::path const attack_dest_dir = env.create_dir(tmpdir / "attack_dest");
+  fs::path const attack_dest_file = env.create_file(attack_dest_dir / "attack_file", 42);
+
+  // victim just continuously removes `victim_del`
+  bool stop = false;
+  std::thread t{[&]() {
+    while (!stop) {
+        std::error_code ec;
+        fs::remove_all(victim_del_path, ec); // ignore any error
+    }
+  }};
+
+  // attacker (could of course be in a separate process)
+  auto start_time = std::chrono::system_clock::now();
+  auto elapsed_since = [](std::chrono::system_clock::time_point const& time_point) {
+      return std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now() - time_point);
+  };
+  bool attack_succeeded = false;
+  while (elapsed_since(start_time) < std::chrono::seconds(5)) {
+    if (!fs::exists(attack_dest_file)) {
+      std::printf("Victim deleted symlinked file outside of victim_del. Attack succeeded in %lld seconds.\n",
+                  elapsed_since(start_time).count());
+      attack_succeeded = true;
+      break;
+    }
+    std::error_code ec;
+    fs::create_directory(victim_del_path, ec);
+    if (ec) {
+      continue;
+    }
+
+    fs::remove(victim_del_path);
+    fs::create_directory_symlink(attack_dest_dir, victim_del_path);
+  }
+  stop = true;
+  t.join();
+
+  return attack_succeeded ? 1 : 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.rename/rename.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.rename/rename.pass.cpp
new file mode 100644
index 0000000..c651bf1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.rename/rename.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void rename(const path& old_p, const path& new_p);
+// void rename(const path& old_p,  const path& new_p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_rename_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(fs::rename(p, p)), void);
+    ASSERT_SAME_TYPE(decltype(fs::rename(p, p, ec)), void);
+
+    ASSERT_NOT_NOEXCEPT(fs::rename(p, p));
+    ASSERT_NOEXCEPT(fs::rename(p, p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, path const& t, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::rename(f, t);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == t
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)t); ((void)ec);
+        return true;
+#endif
+    };
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path file = env.create_file("file1", 42);
+    const path dir = env.create_dir("dir1");
+    struct TestCase {
+      path from;
+      path to;
+    } cases[] = {
+        {dne, dne},
+        {file, dir},
+#ifndef _WIN32
+        // The spec doesn't say that this case must be an error; fs.op.rename
+        // note 1.2.1 says that a file may be overwritten by a rename.
+        // On Windows, with rename() implemented with MoveFileExW, overwriting
+        // a file with a directory is not an error.
+        {dir, file},
+#endif
+    };
+    for (auto& TC : cases) {
+        auto from_before = status(TC.from);
+        auto to_before = status(TC.to);
+        std::error_code ec;
+        rename(TC.from, TC.to, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(from_before.type() == status(TC.from).type());
+        TEST_CHECK(to_before.type() == status(TC.to).type());
+        TEST_CHECK(checkThrow(TC.from, TC.to, ec));
+    }
+}
+
+TEST_CASE(basic_rename_test)
+{
+    scoped_test_env env;
+
+    const std::error_code set_ec = std::make_error_code(std::errc::address_in_use);
+    const path file = env.create_file("file1", 42);
+    { // same file
+        std::error_code ec = set_ec;
+        rename(file, file, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(is_regular_file(file));
+        TEST_CHECK(file_size(file) == 42);
+    }
+    const path sym = env.create_symlink(file, "sym");
+    { // file -> symlink
+        std::error_code ec = set_ec;
+        rename(file, sym, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(file));
+        TEST_CHECK(is_regular_file(symlink_status(sym)));
+        TEST_CHECK(file_size(sym) == 42);
+    }
+    const path file2 = env.create_file("file2", 42);
+    const path file3 = env.create_file("file3", 100);
+    { // file -> file
+        std::error_code ec = set_ec;
+        rename(file2, file3, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(file2));
+        TEST_CHECK(is_regular_file(file3));
+        TEST_CHECK(file_size(file3) == 42);
+    }
+    const path dne = env.make_env_path("dne");
+    const path bad_sym = env.create_symlink(dne, "bad_sym");
+    const path bad_sym_dest = env.make_env_path("bad_sym2");
+    { // bad-symlink
+        std::error_code ec = set_ec;
+        rename(bad_sym, bad_sym_dest, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(symlink_status(bad_sym)));
+        TEST_CHECK(is_symlink(bad_sym_dest));
+        TEST_CHECK(read_symlink(bad_sym_dest) == dne);
+    }
+}
+
+TEST_CASE(basic_rename_dir_test)
+{
+    static_test_env env;
+    const std::error_code set_ec = std::make_error_code(std::errc::address_in_use);
+    const path new_dir = env.makePath("new_dir");
+    { // dir -> dir (with contents)
+        std::error_code ec = set_ec;
+        rename(env.Dir, new_dir, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(env.Dir));
+        TEST_CHECK(is_directory(new_dir));
+        TEST_CHECK(exists(new_dir / "file1"));
+    }
+#ifdef _WIN32
+    // On Windows, renaming a directory over a file isn't an error (this
+    // case is skipped in test_error_reporting above).
+    { // dir -> file
+        std::error_code ec = set_ec;
+        rename(new_dir, env.NonEmptyFile, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(!exists(new_dir));
+        TEST_CHECK(is_directory(env.NonEmptyFile));
+        TEST_CHECK(exists(env.NonEmptyFile / "file1"));
+    }
+#endif
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.resize_file/resize_file.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.resize_file/resize_file.pass.cpp
new file mode 100644
index 0000000..5045617
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.resize_file/resize_file.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// void resize_file(const path& p, uintmax_t new_size);
+// void resize_file(const path& p, uintmax_t new_size, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_resize_file_test_suite)
+
+TEST_CASE(test_signatures)
+{
+    const path p; ((void)p);
+    std::uintmax_t i; ((void)i);
+    std::error_code ec; ((void)ec);
+
+    ASSERT_SAME_TYPE(decltype(fs::resize_file(p, i)), void);
+    ASSERT_SAME_TYPE(decltype(fs::resize_file(p, i, ec)), void);
+
+    ASSERT_NOT_NOEXCEPT(fs::resize_file(p, i));
+    ASSERT_NOEXCEPT(fs::resize_file(p, i, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    auto checkThrow = [](path const& f, std::uintmax_t s, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            fs::resize_file(f, s);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == ""
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)s); ((void)ec);
+        return true;
+#endif
+    };
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path bad_sym = env.create_symlink(dne, "sym");
+    const path dir = env.create_dir("dir1");
+    const path cases[] = {
+        dne, bad_sym, dir
+    };
+    for (auto& p : cases) {
+        std::error_code ec;
+        resize_file(p, 42, ec);
+        TEST_REQUIRE(ec);
+        TEST_CHECK(checkThrow(p, 42, ec));
+    }
+}
+
+TEST_CASE(basic_resize_file_test)
+{
+    scoped_test_env env;
+    const path file1 = env.create_file("file1", 42);
+    const auto set_ec = std::make_error_code(std::errc::address_in_use);
+    { // grow file
+        const std::uintmax_t new_s = 100;
+        std::error_code ec = set_ec;
+        resize_file(file1, new_s, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(file_size(file1) == new_s);
+    }
+    { // shrink file
+        const std::uintmax_t new_s = 1;
+        std::error_code ec = set_ec;
+        resize_file(file1, new_s, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(file_size(file1) == new_s);
+    }
+    { // shrink file to zero
+        const std::uintmax_t new_s = 0;
+        std::error_code ec = set_ec;
+        resize_file(file1, new_s, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(file_size(file1) == new_s);
+    }
+    const path sym = env.create_symlink(file1, "sym");
+    { // grow file via symlink
+        const std::uintmax_t new_s = 1024;
+        std::error_code ec = set_ec;
+        resize_file(sym, new_s, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(file_size(file1) == new_s);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.space/space.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.space/space.pass.cpp
new file mode 100644
index 0000000..c031796
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.space/space.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// space_info space(const path& p);
+// space_info space(const path& p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+bool EqualDelta(std::uintmax_t x, std::uintmax_t y, std::uintmax_t delta) {
+    if (x >= y) {
+        return (x - y) <= delta;
+    } else {
+        return (y - x) <= delta;
+    }
+}
+
+TEST_SUITE(filesystem_space_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_SAME_TYPE(decltype(space(p)), space_info);
+    ASSERT_SAME_TYPE(decltype(space(p, ec)), space_info);
+    ASSERT_NOT_NOEXCEPT(space(p));
+    ASSERT_NOEXCEPT(space(p, ec));
+}
+
+TEST_CASE(test_error_reporting)
+{
+    static_test_env static_env;
+    auto checkThrow = [](path const& f, const std::error_code& ec)
+    {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            (void)space(f);
+            return false;
+        } catch (filesystem_error const& err) {
+            return err.path1() == f
+                && err.path2() == ""
+                && err.code() == ec;
+        }
+#else
+        ((void)f); ((void)ec);
+        return true;
+#endif
+    };
+    const path cases[] = {
+        "",
+        static_env.DNE,
+        static_env.BadSymlink
+    };
+    for (auto& p : cases) {
+        const auto expect = static_cast<std::uintmax_t>(-1);
+        std::error_code ec;
+        space_info info = space(p, ec);
+        TEST_CHECK(ec);
+        TEST_CHECK(info.capacity == expect);
+        TEST_CHECK(info.free == expect);
+        TEST_CHECK(info.available == expect);
+        TEST_CHECK(checkThrow(p, ec));
+    }
+}
+
+TEST_CASE(basic_space_test)
+{
+    static_test_env static_env;
+
+    // All the test cases should reside on the same filesystem and therefore
+    // should have the same expected result. Compute this expected result
+    // one and check that it looks semi-sane.
+    const std::uintmax_t bad_value = static_cast<std::uintmax_t>(-1);
+    std::uintmax_t expect_capacity;
+    std::uintmax_t expect_free;
+    std::uintmax_t expect_avail;
+    TEST_REQUIRE(utils::space(static_env.Dir.string(), expect_capacity,
+                              expect_free, expect_avail));
+
+    // Other processes running on the operating system may have changed
+    // the amount of space available. Check that these are within tolerances.
+    // Currently 5% of capacity
+    const std::uintmax_t delta = expect_capacity / 20;
+    const path cases[] = {
+        static_env.File,
+        static_env.Dir,
+        static_env.Dir2,
+        static_env.SymlinkToFile,
+        static_env.SymlinkToDir
+    };
+    for (auto& p : cases) {
+        std::error_code ec = GetTestEC();
+        space_info info = space(p, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(info.capacity != bad_value);
+        TEST_CHECK(expect_capacity == info.capacity);
+        TEST_CHECK(info.free != bad_value);
+        TEST_CHECK(EqualDelta(expect_free, info.free, delta));
+        TEST_CHECK(info.available != bad_value);
+        TEST_CHECK(EqualDelta(expect_avail, info.available, delta));
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.status/status.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.status/status.pass.cpp
new file mode 100644
index 0000000..5de222a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.status/status.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// file_status status(const path& p);
+// file_status status(const path& p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_status_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(status(p));
+    ASSERT_NOEXCEPT(status(p, ec));
+}
+
+TEST_CASE(test_status_not_found)
+{
+    static_test_env static_env;
+    const std::errc expect_errc = std::errc::no_such_file_or_directory;
+    const path cases[] {
+        static_env.DNE,
+        static_env.BadSymlink
+    };
+    for (auto& p : cases) {
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        // test non-throwing overload.
+        file_status st = status(p, ec);
+        TEST_CHECK(ErrorIs(ec, expect_errc));
+        TEST_CHECK(st.type() == file_type::not_found);
+        TEST_CHECK(st.permissions() == perms::unknown);
+        // test throwing overload. It should not throw even though it reports
+        // that the file was not found.
+        TEST_CHECK_NO_THROW(st = status(p));
+        TEST_CHECK(st.type() == file_type::not_found);
+        TEST_CHECK(st.permissions() == perms::unknown);
+    }
+}
+
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories. Imaginary files under GetWindowsInaccessibleDir()
+// produce no_such_file_or_directory, not the error codes this test checks
+// for. Finally, status() for a too long file name doesn't return errors
+// on windows.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+TEST_CASE(test_status_cannot_resolve)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path file = env.create_file("dir/file", 42);
+    const path sym = env.create_symlink("dir/file", "sym");
+    permissions(dir, perms::none);
+
+    const std::errc set_errc = std::errc::address_in_use;
+    const std::errc perm_errc = std::errc::permission_denied;
+    const std::errc name_too_long_errc = std::errc::filename_too_long;
+
+    struct TestCase {
+      path p;
+      std::errc expect_errc;
+    } const TestCases[] = {
+      {file, perm_errc},
+      {sym, perm_errc},
+      {path(std::string(2500, 'a')), name_too_long_errc}
+    };
+    for (auto& TC : TestCases)
+    {
+        { // test non-throwing case
+            std::error_code ec = std::make_error_code(set_errc);
+            file_status st = status(TC.p, ec);
+            TEST_CHECK(ErrorIs(ec, TC.expect_errc));
+            TEST_CHECK(st.type() == file_type::none);
+            TEST_CHECK(st.permissions() == perms::unknown);
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        { // test throwing case
+            try {
+                status(TC.p);
+            } catch (filesystem_error const& err) {
+                TEST_CHECK(err.path1() == TC.p);
+                TEST_CHECK(err.path2() == "");
+                TEST_CHECK(ErrorIs(err.code(), TC.expect_errc));
+            }
+        }
+#endif
+    }
+}
+#endif
+
+TEST_CASE(status_file_types_test)
+{
+    static_test_env static_env;
+    scoped_test_env env;
+    struct TestCase {
+      path p;
+      file_type expect_type;
+    } cases[] = {
+        {static_env.File, file_type::regular},
+        {static_env.SymlinkToFile, file_type::regular},
+        {static_env.Dir, file_type::directory},
+        {static_env.SymlinkToDir, file_type::directory},
+        // file_type::block files tested elsewhere
+#ifndef _WIN32
+        {static_env.CharFile, file_type::character},
+#endif
+#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(_WIN32) && !defined(__ANDROID__) // No support for domain sockets
+        {env.create_socket("socket"), file_type::socket},
+#endif
+#if !defined(_WIN32) && !defined(__ANDROID__)
+        {env.create_fifo("fifo"), file_type::fifo}
+#endif
+    };
+    for (const auto& TC : cases) {
+        // test non-throwing case
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        file_status st = status(TC.p, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(st.type() == TC.expect_type);
+        TEST_CHECK(st.permissions() != perms::unknown);
+        // test throwing case
+        TEST_REQUIRE_NO_THROW(st = status(TC.p));
+        TEST_CHECK(st.type() == TC.expect_type);
+        TEST_CHECK(st.permissions() != perms::unknown);
+    }
+}
+
+TEST_CASE(test_block_file)
+{
+    const path possible_paths[] = {
+        "/dev/drive0", // Apple
+        "/dev/sda",
+        "/dev/loop0"
+    };
+    path p;
+    for (const path& possible_p : possible_paths) {
+        std::error_code ec;
+        if (exists(possible_p, ec)) {
+            p = possible_p;
+            break;
+        }
+    }
+    if (p == path{}) {
+        TEST_UNSUPPORTED();
+    }
+    // test non-throwing case
+    std::error_code ec = std::make_error_code(std::errc::address_in_use);
+    file_status st = status(p, ec);
+    TEST_CHECK(!ec);
+    TEST_CHECK(st.type() == file_type::block);
+    TEST_CHECK(st.permissions() != perms::unknown);
+    // test throwing case
+    TEST_REQUIRE_NO_THROW(st = status(p));
+    TEST_CHECK(st.type() == file_type::block);
+    TEST_CHECK(st.permissions() != perms::unknown);
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.status_known/status_known.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.status_known/status_known.pass.cpp
new file mode 100644
index 0000000..e3763bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.status_known/status_known.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// bool status_known(file_status s) noexcept;
+
+#include "filesystem_include.h"
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(status_known_test_suite)
+
+TEST_CASE(signature_test)
+{
+    file_status s; ((void)s);
+    ASSERT_SAME_TYPE(decltype(status_known(s)), bool);
+    ASSERT_NOEXCEPT(status_known(s));
+}
+
+TEST_CASE(status_known_test)
+{
+    struct TestCase {
+        file_type type;
+        bool expect;
+    };
+    const TestCase testCases[] = {
+        {file_type::none, false},
+        {file_type::not_found, true},
+        {file_type::regular, true},
+        {file_type::directory, true},
+        {file_type::symlink, true},
+        {file_type::block, true},
+        {file_type::character, true},
+        {file_type::fifo, true},
+        {file_type::socket, true},
+        {file_type::unknown, true}
+    };
+    for (auto& TC : testCases) {
+        file_status s(TC.type);
+        TEST_CHECK(status_known(s) == TC.expect);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.symlink_status/symlink_status.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.symlink_status/symlink_status.pass.cpp
new file mode 100644
index 0000000..0563764
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.symlink_status/symlink_status.pass.cpp
@@ -0,0 +1,201 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// file_status symlink_status(const path& p);
+// file_status symlink_status(const path& p, error_code& ec) noexcept;
+
+#include "filesystem_include.h"
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+TEST_SUITE(filesystem_symlink_status_test_suite)
+
+TEST_CASE(signature_test)
+{
+    const path p; ((void)p);
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(symlink_status(p));
+    ASSERT_NOEXCEPT(symlink_status(p, ec));
+}
+
+TEST_CASE(test_symlink_status_not_found)
+{
+    static_test_env static_env;
+    const std::errc expect_errc = std::errc::no_such_file_or_directory;
+    const path cases[] {
+        static_env.DNE
+    };
+    for (auto& p : cases) {
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        // test non-throwing overload.
+        file_status st = symlink_status(p, ec);
+        TEST_CHECK(ErrorIs(ec, expect_errc));
+        TEST_CHECK(st.type() == file_type::not_found);
+        TEST_CHECK(st.permissions() == perms::unknown);
+        // test throwing overload. It should not throw even though it reports
+        // that the file was not found.
+        TEST_CHECK_NO_THROW(st = status(p));
+        TEST_CHECK(st.type() == file_type::not_found);
+        TEST_CHECK(st.permissions() == perms::unknown);
+    }
+}
+
+// Windows doesn't support setting perms::none to trigger failures
+// reading directories. Imaginary files under GetWindowsInaccessibleDir()
+// produce no_such_file_or_directory, not the error codes this test checks
+// for. Finally, status() for a too long file name doesn't return errors
+// on windows.
+#ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+TEST_CASE(test_symlink_status_cannot_resolve)
+{
+    scoped_test_env env;
+    const path dir = env.create_dir("dir");
+    const path file_in_dir = env.create_file("dir/file", 42);
+    const path sym_in_dir = env.create_symlink("dir/file", "dir/bad_sym");
+    const path sym_points_in_dir = env.create_symlink("dir/file", "sym");
+    permissions(dir, perms::none);
+
+    const std::errc set_errc = std::errc::address_in_use;
+    const std::errc expect_errc = std::errc::permission_denied;
+
+    const path fail_cases[] = {
+        file_in_dir, sym_in_dir
+    };
+    for (auto& p : fail_cases)
+    {
+        { // test non-throwing case
+            std::error_code ec = std::make_error_code(set_errc);
+            file_status st = symlink_status(p, ec);
+            TEST_CHECK(ErrorIs(ec, expect_errc));
+            TEST_CHECK(st.type() == file_type::none);
+            TEST_CHECK(st.permissions() == perms::unknown);
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        { // test throwing case
+            try {
+                (void)symlink_status(p);
+            } catch (filesystem_error const& err) {
+                TEST_CHECK(err.path1() == p);
+                TEST_CHECK(err.path2() == "");
+                TEST_CHECK(ErrorIs(err.code(), expect_errc));
+            }
+        }
+#endif
+    }
+    // Test that a symlink that points into a directory without read perms
+    // can be stat-ed using symlink_status
+    {
+        std::error_code ec = std::make_error_code(set_errc);
+        file_status st = symlink_status(sym_points_in_dir, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(st.type() == file_type::symlink);
+        TEST_CHECK(st.permissions() != perms::unknown);
+        // test non-throwing version
+        TEST_REQUIRE_NO_THROW(st = symlink_status(sym_points_in_dir));
+        TEST_CHECK(st.type() == file_type::symlink);
+        TEST_CHECK(st.permissions() != perms::unknown);
+    }
+}
+#endif
+
+
+TEST_CASE(symlink_status_file_types_test)
+{
+    static_test_env static_env;
+    scoped_test_env env;
+    struct TestCase {
+      path p;
+      file_type expect_type;
+    } cases[] = {
+        {static_env.BadSymlink, file_type::symlink},
+        {static_env.File, file_type::regular},
+        {static_env.SymlinkToFile, file_type::symlink},
+        {static_env.Dir, file_type::directory},
+        {static_env.SymlinkToDir, file_type::symlink},
+        // file_type::block files tested elsewhere
+#ifndef _WIN32
+        {static_env.CharFile, file_type::character},
+#endif
+#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(_WIN32) && !defined(__ANDROID__) // No support for domain sockets
+        {env.create_socket("socket"), file_type::socket},
+#endif
+#if !defined(_WIN32) && !defined(__ANDROID__)
+        {env.create_fifo("fifo"), file_type::fifo}
+#endif
+    };
+    for (const auto& TC : cases) {
+        // test non-throwing case
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        file_status st = symlink_status(TC.p, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(st.type() == TC.expect_type);
+        TEST_CHECK(st.permissions() != perms::unknown);
+        // test throwing case
+        TEST_REQUIRE_NO_THROW(st = symlink_status(TC.p));
+        TEST_CHECK(st.type() == TC.expect_type);
+        TEST_CHECK(st.permissions() != perms::unknown);
+    }
+}
+
+TEST_CASE(test_block_file)
+{
+    const path possible_paths[] = {
+        "/dev/drive0", // Apple
+        "/dev/sda",    // Linux
+        "/dev/loop0"   // Linux
+        // No FreeBSD files known
+    };
+    path p;
+    for (const path& possible_p : possible_paths) {
+        std::error_code ec;
+        if (exists(possible_p, ec)) {
+            p = possible_p;
+            break;
+        }
+    }
+    if (p == path{}) {
+        TEST_UNSUPPORTED();
+    }
+    scoped_test_env env;
+    { // test block file
+        // test non-throwing case
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        file_status st = symlink_status(p, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(st.type() == file_type::block);
+        TEST_CHECK(st.permissions() != perms::unknown);
+        // test throwing case
+        TEST_REQUIRE_NO_THROW(st = symlink_status(p));
+        TEST_CHECK(st.type() == file_type::block);
+        TEST_CHECK(st.permissions() != perms::unknown);
+    }
+    const path sym = env.make_env_path("sym");
+    create_symlink(p, sym);
+    { // test symlink to block file
+        // test non-throwing case
+        std::error_code ec = std::make_error_code(std::errc::address_in_use);
+        file_status st = symlink_status(sym, ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(st.type() == file_type::symlink);
+        TEST_CHECK(st.permissions() != perms::unknown);
+        // test throwing case
+        TEST_REQUIRE_NO_THROW(st = symlink_status(sym));
+        TEST_CHECK(st.type() == file_type::symlink);
+        TEST_CHECK(st.permissions() != perms::unknown);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.temp_dir_path/temp_directory_path.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.temp_dir_path/temp_directory_path.pass.cpp
new file mode 100644
index 0000000..0a19662
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.temp_dir_path/temp_directory_path.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path temp_directory_path();
+// path temp_directory_path(error_code& ec);
+
+#include "filesystem_include.h"
+#include <memory>
+#include <cstdlib>
+#include <cstring>
+#include <cassert>
+
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "filesystem_test_helper.h"
+
+using namespace fs;
+
+void PutEnv(std::string var, fs::path value) {
+    assert(utils::setenv(var.c_str(), value.string().c_str(), /* overwrite */ 1) == 0);
+}
+
+void UnsetEnv(std::string var) {
+    assert(utils::unsetenv(var.c_str()) == 0);
+}
+
+TEST_SUITE(filesystem_temp_directory_path_test_suite)
+
+TEST_CASE(signature_test)
+{
+    std::error_code ec; ((void)ec);
+    ASSERT_NOT_NOEXCEPT(temp_directory_path());
+    ASSERT_NOT_NOEXCEPT(temp_directory_path(ec));
+}
+
+TEST_CASE(basic_tests)
+{
+    scoped_test_env env;
+    const path dne = env.make_env_path("dne");
+    const path file = env.create_file("file", 42);
+#ifdef _WIN32
+    // Windows doesn't support setting perms::none to trigger failures
+    // reading directories; test using a special inaccessible directory
+    // instead.
+    const path inaccessible_dir = GetWindowsInaccessibleDir();
+#else
+    const path dir_perms = env.create_dir("bad_perms_dir");
+    const path inaccessible_dir = env.create_dir("bad_perms_dir/nested");
+    permissions(dir_perms, perms::none);
+#endif
+    LIBCPP_ONLY(const std::errc expect_errc = std::errc::not_a_directory);
+    struct TestCase {
+      std::string name;
+      path p;
+    } cases[] = {
+#ifdef _WIN32
+        {"TMP", env.create_dir("dir1")},
+        {"TEMP", env.create_dir("dir2")},
+        {"USERPROFILE", env.create_dir("dir3")}
+#else
+        {"TMPDIR", env.create_dir("dir1")},
+        {"TMP", env.create_dir("dir2")},
+        {"TEMP", env.create_dir("dir3")},
+        {"TEMPDIR", env.create_dir("dir4")}
+#endif
+    };
+    TestCase ignored_cases[] = {
+#ifdef _WIN32
+        {"TMPDIR", env.create_dir("dir5")},
+        {"TEMPDIR", env.create_dir("dir6")},
+#else
+        {"USERPROFILE", env.create_dir("dir5")},
+#endif
+    };
+    for (auto& TC : cases) {
+        PutEnv(TC.name, TC.p);
+    }
+    for (auto& TC : cases) {
+        std::error_code ec = GetTestEC();
+        path ret = temp_directory_path(ec);
+        TEST_CHECK(!ec);
+        TEST_CHECK(ret == TC.p);
+        TEST_CHECK(is_directory(ret));
+
+        // Set the env variable to a path that does not exist and check
+        // that it fails.
+        PutEnv(TC.name, dne);
+        ec = GetTestEC();
+        ret = temp_directory_path(ec);
+        LIBCPP_ONLY(TEST_CHECK(ErrorIs(ec, expect_errc)));
+        TEST_CHECK(ec != GetTestEC());
+        TEST_CHECK(ec);
+        TEST_CHECK(ret == "");
+
+        // Set the env variable to point to a file and check that it fails.
+        PutEnv(TC.name, file);
+        ec = GetTestEC();
+        ret = temp_directory_path(ec);
+        LIBCPP_ONLY(TEST_CHECK(ErrorIs(ec, expect_errc)));
+        TEST_CHECK(ec != GetTestEC());
+        TEST_CHECK(ec);
+        TEST_CHECK(ret == "");
+
+        if (!inaccessible_dir.empty()) {
+            // Set the env variable to point to a dir we can't access
+            PutEnv(TC.name, inaccessible_dir);
+            ec = GetTestEC();
+            ret = temp_directory_path(ec);
+            TEST_CHECK(ErrorIs(ec, std::errc::permission_denied));
+            TEST_CHECK(ret == "");
+        }
+
+        // Set the env variable to point to a non-existent dir
+        PutEnv(TC.name, TC.p / "does_not_exist");
+        ec = GetTestEC();
+        ret = temp_directory_path(ec);
+        TEST_CHECK(ec != GetTestEC());
+        TEST_CHECK(ec);
+        TEST_CHECK(ret == "");
+
+        // Finally erase this env variable
+        UnsetEnv(TC.name);
+    }
+    // No env variables are defined
+    path fallback;
+    {
+        std::error_code ec = GetTestEC();
+        path ret = temp_directory_path(ec);
+        TEST_CHECK(!ec);
+#if defined(_WIN32)
+        // On Windows, the function falls back to the Windows folder.
+        wchar_t win_dir[MAX_PATH];
+        DWORD win_dir_sz = GetWindowsDirectoryW(win_dir, MAX_PATH);
+        TEST_CHECK(win_dir_sz > 0 && win_dir_sz < MAX_PATH);
+        TEST_CHECK(win_dir[win_dir_sz-1] != L'\\');
+        TEST_CHECK(ret == win_dir);
+#elif defined(__ANDROID__)
+        TEST_CHECK(ret == "/data/local/tmp");
+#else
+        TEST_CHECK(ret == "/tmp");
+#endif
+        TEST_CHECK(is_directory(ret));
+        fallback = ret;
+    }
+    for (auto& TC : ignored_cases) {
+        // Check that certain variables are ignored
+        PutEnv(TC.name, TC.p);
+        std::error_code ec = GetTestEC();
+        path ret = temp_directory_path(ec);
+        TEST_CHECK(!ec);
+
+        // Check that we return the same as above when no vars were defined.
+        TEST_CHECK(ret == fallback);
+
+        // Finally erase this env variable
+        UnsetEnv(TC.name);
+    }
+}
+
+TEST_SUITE_END()
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.weakly_canonical/weakly_canonical.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.weakly_canonical/weakly_canonical.pass.cpp
new file mode 100644
index 0000000..b0909da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.weakly_canonical/weakly_canonical.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <filesystem>
+
+// path weakly_canonical(const path& p);
+// path weakly_canonical(const path& p, error_code& ec);
+
+#include "filesystem_include.h"
+#include <cstdio>
+#include <string>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "count_new.h"
+#include "filesystem_test_helper.h"
+
+
+int main(int, char**) {
+
+  static_test_env static_env;
+
+  fs::path root = fs::current_path().root_path();
+  // clang-format off
+  struct {
+    fs::path input;
+    fs::path expect;
+  } TestCases[] = {
+      {"", fs::current_path()},
+      {".", fs::current_path()},
+      {"/", root},
+      {"/foo", root / "foo"},
+      {"/.", root},
+      {"/./", root},
+      {"a/b", fs::current_path() / "a/b"},
+      {"a", fs::current_path() / "a"},
+      {"a/b/", fs::current_path() / "a/b/"},
+      {static_env.File, static_env.File},
+      {static_env.Dir, static_env.Dir},
+      {static_env.SymlinkToDir, static_env.Dir},
+      {static_env.SymlinkToDir / "dir2/.", static_env.Dir / "dir2"},
+      // Note: If the trailing separator occurs in a part of the path that exists,
+      // it is omitted. Otherwise it is added to the end of the result.
+      // MS STL and libstdc++ behave similarly.
+      {static_env.SymlinkToDir / "dir2/./", static_env.Dir / "dir2"},
+      {static_env.SymlinkToDir / "dir2/DNE/./", static_env.Dir / "dir2/DNE/"},
+      {static_env.SymlinkToDir / "dir2", static_env.Dir2},
+#ifdef _WIN32
+      // On Windows, this path is considered to exist (even though it
+      // passes through a nonexistent directory), and thus is returned
+      // without a trailing slash, see the note above.
+      {static_env.SymlinkToDir / "dir2/../dir2/DNE/..", static_env.Dir2},
+#else
+      {static_env.SymlinkToDir / "dir2/../dir2/DNE/..", static_env.Dir2 / ""},
+#endif
+      {static_env.SymlinkToDir / "dir2/dir3/../DNE/DNE2", static_env.Dir2 / "DNE/DNE2"},
+      {static_env.Dir / "../dir1", static_env.Dir},
+      {static_env.Dir / "./.", static_env.Dir},
+      {static_env.Dir / "DNE/../foo", static_env.Dir / "foo"}
+  };
+  // clang-format on
+  int ID = 0;
+  bool Failed = false;
+  for (auto& TC : TestCases) {
+    ++ID;
+    fs::path p = TC.input;
+    fs::path expect = TC.expect;
+    expect.make_preferred();
+    const fs::path output = fs::weakly_canonical(p);
+    if (!PathEq(output, expect)) {
+      Failed = true;
+      std::fprintf(stderr, "TEST CASE #%d FAILED:\n"
+                  "  Input: '%s'\n"
+                  "  Expected: '%s'\n"
+                  "  Output: '%s'\n",
+        ID, TC.input.string().c_str(), expect.string().c_str(),
+        output.string().c_str());
+    }
+  }
+  return Failed;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.req.namespace/namespace.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.req.namespace/namespace.fail.cpp
new file mode 100644
index 0000000..396ed4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.req.namespace/namespace.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14
+
+// <filesystem>
+
+// namespace std::filesystem
+
+#include <filesystem>
+#include "test_macros.h"
+
+using namespace std::filesystem;
+
+#if TEST_STD_VER >= 11
+// expected-error@-3 {{no namespace named 'filesystem' in namespace 'std';}}
+#else
+// expected-error@-5 {{expected namespace name}}
+#endif
+
+int main(int, char**) {
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.req.namespace/namespace.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.req.namespace/namespace.pass.cpp
new file mode 100644
index 0000000..86ca779
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/fs.req.namespace/namespace.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <filesystem>
+
+// namespace std::filesystem
+
+#include <filesystem>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using namespace std::filesystem;
+
+int main(int, char**) {
+  static_assert(std::is_same<
+          path,
+          std::filesystem::path
+      >::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/filesystems/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/lit.local.cfg
new file mode 100644
index 0000000..b22876f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/filesystems/lit.local.cfg
@@ -0,0 +1,10 @@
+# Filesystem is supported on Apple platforms starting with macosx10.15.
+# Automatically disable the <filesystem> tests when we're running the test
+# suite against an older macOS.
+too_old = {'10.9', '10.10', '10.11', '10.12', '10.13', '10.14'}
+if 'use_system_cxx_lib' in config.available_features:
+  if any('target=x86_64-apple-macosx{}'.format(v) in config.available_features for v in too_old):
+    config.unsupported = True
+
+if 'no-filesystem' in config.available_features:
+    config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/input.output.general/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/input.output.general/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/input.output.general/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/input.output.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/input.output.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/input.output.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/get_money.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/get_money.pass.cpp
new file mode 100644
index 0000000..92b82e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/get_money.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// template <class moneyT> T7 get_money(moneyT& mon, bool intl = false);
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <iomanip>
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+};
+
+int main(int, char**)
+{
+    {
+#if defined(_WIN32)
+        testbuf<char> sb("  ($1,234,567.89)");
+#else
+        testbuf<char> sb("  -$1,234,567.89");
+#endif
+        std::istream is(&sb);
+        is.imbue(std::locale(LOCALE_en_US_UTF_8));
+        long double x = 0;
+        is >> std::get_money(x, false);
+        assert(x == -123456789);
+    }
+    {
+#if defined(_WIN32)
+        testbuf<char> sb("  (USD 1,234,567.89)");
+#else
+        testbuf<char> sb("  -USD 1,234,567.89");
+#endif
+        std::istream is(&sb);
+        is.imbue(std::locale(LOCALE_en_US_UTF_8));
+        long double x = 0;
+        is >> std::get_money(x, true);
+        assert(x == -123456789);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+#if defined(_WIN32)
+        testbuf<wchar_t> sb(L"  ($1,234,567.89)");
+#else
+        testbuf<wchar_t> sb(L"  -$1,234,567.89");
+#endif
+        std::wistream is(&sb);
+        is.imbue(std::locale(LOCALE_en_US_UTF_8));
+        long double x = 0;
+        is >> std::get_money(x, false);
+        assert(x == -123456789);
+    }
+    {
+#if defined(_WIN32)
+        testbuf<wchar_t> sb(L"  (USD 1,234,567.89)");
+#else
+        testbuf<wchar_t> sb(L"  -USD 1,234,567.89");
+#endif
+        std::wistream is(&sb);
+        is.imbue(std::locale(LOCALE_en_US_UTF_8));
+        long double x = 0;
+        is >> std::get_money(x, true);
+        assert(x == -123456789);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/get_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/get_time.pass.cpp
new file mode 100644
index 0000000..addf53f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/get_time.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <iomanip>
+
+// template <class charT> T9 get_time(struct tm* tmb, const charT* fmt);
+
+#include <iomanip>
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("  Sat Dec 31 23:55:59 2061");
+        std::istream is(&sb);
+        is.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::tm t = {};
+        is >> std::get_time(&t, "%a %b %d %H:%M:%S %Y");
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+        assert(t.tm_wday == 6);
+        assert(is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  Sat Dec 31 23:55:59 2061");
+        std::wistream is(&sb);
+        is.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::tm t = {};
+        is >> std::get_time(&t, L"%a %b %d %H:%M:%S %Y");
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+        assert(t.tm_wday == 6);
+        assert(is.eof());
+        assert(!is.fail());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/put_money.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/put_money.pass.cpp
new file mode 100644
index 0000000..0cfbcee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/put_money.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// template <class charT, class moneyT> T8 put_money(const moneyT& mon, bool intl = false);
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <iomanip>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = str_.size();
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::showbase(os);
+        long double x = -123456789;
+        os << std::put_money(x, false);
+#if defined(_WIN32)
+        assert(sb.str() == "($1,234,567.89)");
+#else
+        assert(sb.str() == "-$1,234,567.89");
+#endif
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::showbase(os);
+        long double x = -123456789;
+        os << std::put_money(x, true);
+#if defined(_WIN32)
+        assert(sb.str() == "(USD1,234,567.89)");
+#else
+        assert(sb.str() == "-USD 1,234,567.89");
+#endif
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::showbase(os);
+        long double x = -123456789;
+        os << std::put_money(x, false);
+#if defined(_WIN32)
+        assert(sb.str() == L"($1,234,567.89)");
+#else
+        assert(sb.str() == L"-$1,234,567.89");
+#endif
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::showbase(os);
+        long double x = -123456789;
+        os << std::put_money(x, true);
+#if defined(_WIN32)
+        assert(sb.str() == L"(USD1,234,567.89)");
+#else
+        assert(sb.str() == L"-USD 1,234,567.89");
+#endif
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/put_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/put_time.pass.cpp
new file mode 100644
index 0000000..7de93be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/ext.manip/put_time.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <iomanip>
+
+// template <class charT> T10 put_time(const struct tm* tmb, const charT* fmt);
+
+#include <iomanip>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::tm t = {};
+        t.tm_sec = 59;
+        t.tm_min = 55;
+        t.tm_hour = 23;
+        t.tm_mday = 31;
+        t.tm_mon = 11;
+        t.tm_year = 161;
+        t.tm_wday = 6;
+        t.tm_isdst = 0;
+        os << std::put_time(&t, "%a %b %d %H:%M:%S %Y");
+        assert(sb.str() == "Sat Dec 31 23:55:59 2061");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.imbue(std::locale(LOCALE_en_US_UTF_8));
+        std::tm t = {};
+        t.tm_sec = 59;
+        t.tm_min = 55;
+        t.tm_hour = 23;
+        t.tm_mday = 31;
+        t.tm_mon = 11;
+        t.tm_year = 161;
+        t.tm_wday = 6;
+        os << std::put_time(&t, L"%a %b %d %H:%M:%S %Y");
+        assert(sb.str() == L"Sat Dec 31 23:55:59 2061");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..a1fbc7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.assign/member_swap.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_iostream;
+
+// void swap(basic_iostream& rhs);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_iostream
+    : public std::basic_iostream<CharT>
+{
+    typedef std::basic_iostream<CharT> base;
+    test_iostream(testbuf<CharT>* sb) : base(sb) {}
+
+    void swap(test_iostream& s) {base::swap(s);}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_iostream<char> is1(&sb1);
+        test_iostream<char> is2(&sb2);
+        is1.swap(is2);
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_iostream<wchar_t> is1(&sb1);
+        test_iostream<wchar_t> is2(&sb2);
+        is1.swap(is2);
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..b8b2f01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.assign/move_assign.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_iostream;
+
+// basic_iostream& operator=(basic_iostream&& rhs);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_iostream
+    : public std::basic_iostream<CharT>
+{
+    typedef std::basic_iostream<CharT> base;
+    test_iostream(testbuf<CharT>* sb) : base(sb) {}
+
+    test_iostream& operator=(test_iostream&& s)
+        {base::operator=(std::move(s)); return *this;}
+};
+
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_iostream<char> is1(&sb1);
+        test_iostream<char> is2(&sb2);
+        is2 = (std::move(is1));
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_iostream<wchar_t> is1(&sb1);
+        test_iostream<wchar_t> is2(&sb2);
+        is2 = (std::move(is1));
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.cons/move.pass.cpp
new file mode 100644
index 0000000..c1761fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.cons/move.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_iostream;
+
+// basic_iostream(basic_iostream&& rhs);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_iostream
+    : public std::basic_iostream<CharT>
+{
+    typedef std::basic_iostream<CharT> base;
+    test_iostream(testbuf<CharT>* sb) : base(sb) {}
+
+    test_iostream(test_iostream&& s)
+        : base(std::move(s)) {}
+};
+
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        test_iostream<char> is1(&sb);
+        test_iostream<char> is(std::move(is1));
+        assert(is1.rdbuf() == &sb);
+        assert(is1.gcount() == 0);
+        assert(is.gcount() == 0);
+        assert(is.rdbuf() == 0);
+        assert(is.tie() == 0);
+        assert(is.fill() == ' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        test_iostream<wchar_t> is1(&sb);
+        test_iostream<wchar_t> is(std::move(is1));
+        assert(is1.gcount() == 0);
+        assert(is.gcount() == 0);
+        assert(is1.rdbuf() == &sb);
+        assert(is.rdbuf() == 0);
+        assert(is.tie() == 0);
+        assert(is.fill() == L' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.cons/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.cons/streambuf.pass.cpp
new file mode 100644
index 0000000..e30560e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.cons/streambuf.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_iostream;
+
+// explicit basic_iostream(basic_streambuf<charT,traits>* sb);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::basic_iostream<char> is(&sb);
+        assert(is.rdbuf() == &sb);
+        assert(is.tie() == 0);
+        assert(is.fill() == ' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_iostream<wchar_t> is(&sb);
+        assert(is.rdbuf() == &sb);
+        assert(is.tie() == 0);
+        assert(is.fill() == L' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+        assert(is.gcount() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.dest/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.dest/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/iostream.dest/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/types.pass.cpp
new file mode 100644
index 0000000..7985633
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/iostreamclass/types.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_iostream :
+//     public basic_istream<charT,traits>,
+//     public basic_ostream<charT,traits>
+// {
+// public:
+//     // types:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <istream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_istream<char>, std::basic_iostream<char> >::value), "");
+    static_assert((std::is_base_of<std::basic_ostream<char>, std::basic_iostream<char> >::value), "");
+    static_assert((std::is_same<std::basic_iostream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_iostream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_iostream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_iostream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_iostream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/bool.pass.cpp
new file mode 100644
index 0000000..fa14790
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/bool.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(bool& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        bool n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        bool n = true;
+        is >> n;
+        assert(n == false);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 1 ");
+        std::istream is(&sb);
+        bool n = 0;
+        is >> n;
+        assert(n == true);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 1 ");
+        std::wistream is(&sb);
+        bool n = 0;
+        is >> n;
+        assert(n == true);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            bool n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            bool n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/double.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/double.pass.cpp
new file mode 100644
index 0000000..85d13b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/double.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(double& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        double n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        double n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        double n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -123.5 ");
+        std::wistream is(&sb);
+        double n = 10;
+        is >> n;
+        assert(n == -123.5);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            double n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            double n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/float.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/float.pass.cpp
new file mode 100644
index 0000000..44ba89a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/float.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(float& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        float n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        float n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        float n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -123.5 ");
+        std::wistream is(&sb);
+        float n = 10;
+        is >> n;
+        assert(n == -123.5);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            float n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            float n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/int.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/int.pass.cpp
new file mode 100644
index 0000000..5ab4515
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/int.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(int& val);
+
+#include <istream>
+#include <limits>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        int n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        int n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        int n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -1234567890123456 ");
+        std::wistream is(&sb);
+        int n = 10;
+        is >> n;
+        assert(n == std::numeric_limits<int>::min());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            int n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            int n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long.pass.cpp
new file mode 100644
index 0000000..4af8578
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(long& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        long n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        long n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        long n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -123 ");
+        std::wistream is(&sb);
+        long n = 10;
+        is >> n;
+        assert(n == -123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long_double.pass.cpp
new file mode 100644
index 0000000..e7d7074
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long_double.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(long double& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        long double n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        long double n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        long double n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -123.5 ");
+        std::wistream is(&sb);
+        long double n = 10;
+        is >> n;
+        assert(n == -123.5);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            long double n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            long double n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long_long.pass.cpp
new file mode 100644
index 0000000..e13237c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/long_long.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(long long& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        long long n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        long long n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        long long n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -123 ");
+        std::wistream is(&sb);
+        long long n = 10;
+        is >> n;
+        assert(n == -123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            long long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            long long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/pointer.pass.cpp
new file mode 100644
index 0000000..f3b5bba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/pointer.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(void*& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        void* n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        void* n = (void*)1;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 1 ");
+        std::istream is(&sb);
+        void* n = 0;
+        is >> n;
+        assert(n == (void*)1);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 1 ");
+        std::wistream is(&sb);
+        void* n = 0;
+        is >> n;
+        assert(n == (void*)1);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+    {
+        testbuf<char> sb("12345678");
+        std::istream is(&sb);
+        void* n = 0;
+        is >> n;
+        assert(n == (void*)0x12345678);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"12345678");
+        std::wistream is(&sb);
+        void* n = 0;
+        is >> n;
+        assert(n == (void*)0x12345678);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            void* n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            void* n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/short.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/short.pass.cpp
new file mode 100644
index 0000000..4f9c1a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/short.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(short& val);
+
+#include <istream>
+#include <limits>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        short n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        short n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        short n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" -1234567890 ");
+        std::wistream is(&sb);
+        short n = 10;
+        is >> n;
+        assert(n == std::numeric_limits<short>::min());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            short n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            short n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_int.pass.cpp
new file mode 100644
index 0000000..64bafa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_int.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(unsigned int& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        unsigned int n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        unsigned int n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        unsigned int n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123 ");
+        std::wistream is(&sb);
+        unsigned int n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            unsigned int n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            unsigned int n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_long.pass.cpp
new file mode 100644
index 0000000..764ca34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_long.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(unsigned long& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        unsigned long n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        unsigned long n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        unsigned long n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123 ");
+        std::wistream is(&sb);
+        unsigned long n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            unsigned long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            unsigned long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_long_long.pass.cpp
new file mode 100644
index 0000000..25dface
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_long_long.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(unsigned long long& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        unsigned long long n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        unsigned long long n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        unsigned long long n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123 ");
+        std::wistream is(&sb);
+        unsigned long long n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            unsigned long long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            unsigned long long n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_short.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_short.pass.cpp
new file mode 100644
index 0000000..e01cd3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.arithmetic/unsigned_short.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// operator>>(unsigned short& val);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        unsigned short n = 0;
+        is >> n;
+        assert(is.fail());
+    }
+    {
+        testbuf<char> sb("0");
+        std::istream is(&sb);
+        unsigned short n = 10;
+        is >> n;
+        assert(n == 0);
+        assert( is.eof());
+        assert(!is.fail());
+    }
+    {
+        testbuf<char> sb(" 123 ");
+        std::istream is(&sb);
+        unsigned short n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123 ");
+        std::wistream is(&sb);
+        unsigned short n = 10;
+        is >> n;
+        assert(n == 123);
+        assert(!is.eof());
+        assert(!is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            unsigned short n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            unsigned short n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.reqmts/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.reqmts/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream.formatted.reqmts/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/basic_ios.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/basic_ios.pass.cpp
new file mode 100644
index 0000000..14f48c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/basic_ios.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// basic_istream<charT,traits>& operator>>(basic_ios<charT,traits>&
+//                                         (*pf)(basic_ios<charT,traits>&));
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int f_called = 0;
+
+template <class CharT>
+std::basic_ios<CharT>&
+f(std::basic_ios<CharT>& is)
+{
+    ++f_called;
+    return is;
+}
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        is >> f;
+        assert(f_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp
new file mode 100644
index 0000000..ca7df06
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/chart.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template<class charT, class traits>
+//   basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&& in, charT& c);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("          ");
+        std::istream is(&sb);
+        char c = 'z';
+        is >> c;
+        assert( is.eof());
+        assert( is.fail());
+        assert(c == 'z');
+    }
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        char c;
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'a');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'b');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'c');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"   abc");
+        std::wistream is(&sb);
+        wchar_t c;
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'a');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'b');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'c');
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            char n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            wchar_t n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            char n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            wchar_t n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/ios_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/ios_base.pass.cpp
new file mode 100644
index 0000000..d502aa9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/ios_base.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// basic_istream<charT,traits>& operator>>(ios_base& (*pf)(ios_base&));
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int f_called = 0;
+
+std::ios_base&
+f(std::ios_base& is)
+{
+    ++f_called;
+    return is;
+}
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        is >> f;
+        assert(f_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/istream.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/istream.pass.cpp
new file mode 100644
index 0000000..82337fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/istream.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&
+//                                         (*pf)(basic_istream<charT,traits>&));
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int f_called = 0;
+
+template <class CharT>
+std::basic_istream<CharT>&
+f(std::basic_istream<CharT>& is)
+{
+    ++f_called;
+    return is;
+}
+
+int main(int, char**)
+{
+    {
+        std::istream is((std::streambuf*)0);
+        is >> f;
+        assert(f_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/signed_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/signed_char.pass.cpp
new file mode 100644
index 0000000..d5ae909
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/signed_char.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template<class traits>
+//   basic_istream<char,traits>& operator>>(basic_istream<char,traits>&& in, signed char& c);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("          ");
+        std::istream is(&sb);
+        signed char c = 'z';
+        is >> c;
+        assert( is.eof());
+        assert( is.fail());
+        assert(c == 'z');
+    }
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        signed char c;
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'a');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'b');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'c');
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            signed char n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            signed char n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/signed_char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/signed_char_pointer.pass.cpp
new file mode 100644
index 0000000..64ff48d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/signed_char_pointer.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template<class traits>
+//   basic_istream<char,traits>& operator>>(basic_istream<char,traits>&& in, signed char* s);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        signed char s[20];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abcdefghijk");
+    }
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        is.width(4);
+        signed char s[20];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abc");
+        assert(is.width() == 0);
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        signed char s[4];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abc");
+    }
+#endif
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        signed char s[20];
+        is >> s;
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abcdefghijk");
+        assert(is.width() == 0);
+    }
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        signed char s[20];
+        is.width(1);
+        is >> s;
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string((char*)s) == "");
+        assert(is.width() == 0);
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        signed char s[1];
+        is >> s;
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string((char*)s) == "");
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            signed char s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            signed char s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/streambuf.pass.cpp
new file mode 100644
index 0000000..ff96d12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/streambuf.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_istream;
+
+// basic_istream<charT,traits>& operator>>(basic_streambuf<charT,traits>* sb);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+    testbuf(const std::basic_string<CharT>& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data() + str_.size()));
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                std::size_t n = str_.size();
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(static_cast<int>(n+1));
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("testing...");
+        std::istream is(&sb);
+        testbuf<char> sb2;
+        is >> &sb2;
+        assert(sb2.str() == "testing...");
+        assert(is.gcount() == 10);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        testbuf<char> sb2;
+        is.exceptions(std::istream::eofbit);
+        bool threw = false;
+        try {
+            is >> &sb2;
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        testbuf<wchar_t> sb2;
+        is.exceptions(std::istream::eofbit);
+        bool threw = false;
+        try {
+            is >> &sb2;
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#endif
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        testbuf<char> sb2;
+        is.exceptions(std::istream::failbit);
+        bool threw = false;
+        try {
+            is >> &sb2;
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        testbuf<wchar_t> sb2;
+        is.exceptions(std::istream::failbit);
+        bool threw = false;
+        try {
+            is >> &sb2;
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#endif
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::istream::failbit);
+        bool threw = false;
+        try {
+            is >> static_cast<testbuf<char>*>(0);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::istream::failbit);
+        bool threw = false;
+        try {
+            is >> static_cast<testbuf<wchar_t>*>(0);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/unsigned_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/unsigned_char.pass.cpp
new file mode 100644
index 0000000..8d86d11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/unsigned_char.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template<class traits>
+//   basic_istream<char,traits>& operator>>(basic_istream<char,traits>&& in, unsigned char& c);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("          ");
+        std::istream is(&sb);
+        unsigned char c = 'z';
+        is >> c;
+        assert( is.eof());
+        assert( is.fail());
+        assert(c == 'z');
+    }
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        unsigned char c;
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'a');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'b');
+        is >> c;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'c');
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            unsigned char n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            unsigned char n = 0;
+            is >> n;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/unsigned_char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/unsigned_char_pointer.pass.cpp
new file mode 100644
index 0000000..7e4bf41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/unsigned_char_pointer.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template<class traits>
+//   basic_istream<char,traits>& operator>>(basic_istream<char,traits>&& in, unsigned char* s);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        unsigned char s[20];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abcdefghijk");
+    }
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        is.width(4);
+        unsigned char s[20];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abc");
+        assert(is.width() == 0);
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        unsigned char s[4];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abc");
+    }
+#endif
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        unsigned char s[20];
+        is >> s;
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::string((char*)s) == "abcdefghijk");
+        assert(is.width() == 0);
+    }
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        unsigned char s[20];
+        is.width(1);
+        is >> s;
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string((char*)s) == "");
+        assert(is.width() == 0);
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        unsigned char s[1];
+        is >> s;
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string((char*)s) == "");
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            unsigned char s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            unsigned char s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/wchar_t_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/wchar_t_pointer.pass.cpp
new file mode 100644
index 0000000..736849b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.formatted/istream_extractors/wchar_t_pointer.pass.cpp
@@ -0,0 +1,204 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template<class charT, class traits>
+//   basic_istream<charT,traits>& operator>>(basic_istream<charT,traits>&& in, charT* s);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        char s[20];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "abcdefghijk");
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<char> sb("   abcdefghijk    ");
+        std::istream is(&sb);
+        char s[4];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "abc");
+    }
+#endif
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"   abcdefghijk    ");
+        std::wistream is(&sb);
+        is.width(4);
+        wchar_t s[20];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"abc");
+        assert(is.width() == 0);
+    }
+    {
+        testbuf<wchar_t> sb(L"   abcdefghijk");
+        std::wistream is(&sb);
+        wchar_t s[20];
+        is >> s;
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"abcdefghijk");
+        assert(is.width() == 0);
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<wchar_t> sb(L"   abcdefghijk");
+        std::wistream is(&sb);
+        wchar_t s[4];
+        is >> s;
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"abc");
+    }
+#endif
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        char s[20];
+        is.width(1);
+        is >> s;
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.width() == 0);
+    }
+#if TEST_STD_VER > 17
+    {
+        testbuf<char> sb("   abcdefghijk");
+        std::istream is(&sb);
+        char s[1];
+        is >> s;
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            char s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        bool threw = false;
+        try {
+            wchar_t s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            char s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            wchar_t s[20];
+            is.width(10);
+            is >> s;
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.manip/ws.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.manip/ws.pass.cpp
new file mode 100644
index 0000000..2cd2fcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.manip/ws.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits>
+//   basic_istream<charT,traits>&
+//   ws(basic_istream<charT,traits>& is);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("   123");
+        std::istream is(&sb);
+        std::ws(is);
+        assert(is.good());
+        assert(is.peek() == '1');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"   123");
+        std::wistream is(&sb);
+        std::ws(is);
+        assert(is.good());
+        assert(is.peek() == L'1');
+    }
+#endif
+    {
+        testbuf<char> sb("  ");
+        std::istream is(&sb);
+        std::ws(is);
+        assert(!is.fail());
+        assert(is.eof());
+        std::ws(is);
+        assert(is.eof());
+        assert(is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  ");
+        std::wistream is(&sb);
+        std::ws(is);
+        assert(!is.fail());
+        assert(is.eof());
+        std::ws(is);
+        assert(is.eof());
+        assert(is.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb("  ");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            std::ws(is);
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(!is.fail());
+        assert( is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  ");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            std::ws(is);
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(!is.fail());
+        assert( is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/not_istreamable.verify.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/not_istreamable.verify.cpp
new file mode 100644
index 0000000..8b9d941
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/not_istreamable.verify.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the rvalue overload of operator>> isn't part of the overload set
+// when the type is not input streamable from a lvalue stream.
+
+#include <istream>
+#include <utility>
+
+struct Foo { };
+
+using X = decltype(std::declval<std::istream>() >> std::declval<Foo&>()); // expected-error {{invalid operands to binary expression}}
+using Y = decltype(std::declval<std::istream>() >> std::declval<Foo>()); // expected-error {{invalid operands to binary expression}}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/rvalue.pass.cpp
new file mode 100644
index 0000000..23ad80e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/rvalue.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class Stream, class T>
+// Stream&& operator>>(Stream&& is, T&& x);
+
+#include <istream>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+struct Int {
+    int value;
+    template <class CharT>
+    friend void operator>>(std::basic_istream<CharT>& is, Int& self) {
+        is >> self.value;
+    }
+};
+
+struct A { };
+bool called = false;
+void operator>>(std::istream&, A&&) { called = true; }
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("   123");
+        Int i = {0};
+        std::istream is(&sb);
+        std::istream&& result = (std::move(is) >> i);
+        assert(&result == &is);
+        assert(i.value == 123);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"   123");
+        Int i = {0};
+        std::wistream is(&sb);
+        std::wistream&& result = (std::move(is) >> i);
+        assert(&result == &is);
+        assert(i.value == 123);
+    }
+#endif
+    {
+        // test perfect forwarding
+        assert(called == false);
+        std::istringstream ss;
+        std::istringstream&& result = (std::move(ss) >> A());
+        assert(&result == &ss);
+        assert(called);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get.pass.cpp
new file mode 100644
index 0000000..18a29da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// int_type get();
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("          ");
+        std::istream is(&sb);
+        char c = static_cast<char>(is.get());
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == ' ');
+        assert(is.gcount() == 1);
+    }
+    {
+        testbuf<char> sb(" abc");
+        std::istream is(&sb);
+        char c = static_cast<char>(is.get());
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == ' ');
+        assert(is.gcount() == 1);
+        c = static_cast<char>(is.get());
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'a');
+        assert(is.gcount() == 1);
+        c = static_cast<char>(is.get());
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'b');
+        assert(is.gcount() == 1);
+        c = static_cast<char>(is.get());
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'c');
+        assert(is.gcount() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" abc");
+        std::wistream is(&sb);
+        wchar_t c = is.get();
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L' ');
+        assert(is.gcount() == 1);
+        c = is.get();
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'a');
+        assert(is.gcount() == 1);
+        c = is.get();
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'b');
+        assert(is.gcount() == 1);
+        c = is.get();
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'c');
+        assert(is.gcount() == 1);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb("rrrrrrrrr");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            while (true) {
+                is.get();
+                if (is.eof())
+                    break;
+            }
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"rrrrrrrrr");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            while (true) {
+                is.get();
+                if (is.eof())
+                    break;
+            }
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_chart.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_chart.pass.cpp
new file mode 100644
index 0000000..7dd808e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_chart.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& get(char_type& c);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("          ");
+        std::istream is(&sb);
+        char c;
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == ' ');
+        assert(is.gcount() == 1);
+    }
+    {
+        testbuf<char> sb(" abc");
+        std::istream is(&sb);
+        char c;
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == ' ');
+        assert(is.gcount() == 1);
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'a');
+        assert(is.gcount() == 1);
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'b');
+        assert(is.gcount() == 1);
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == 'c');
+        assert(is.gcount() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" abc");
+        std::wistream is(&sb);
+        wchar_t c;
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L' ');
+        assert(is.gcount() == 1);
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'a');
+        assert(is.gcount() == 1);
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'b');
+        assert(is.gcount() == 1);
+        is.get(c);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(c == L'c');
+        assert(is.gcount() == 1);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb("rrrrrrrrr");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            while (true) {
+                char c;
+                is.get(c);
+                if (is.eof())
+                    break;
+            }
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"rrrrrrrrr");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        bool threw = false;
+        try {
+            while (true) {
+                wchar_t c;
+                is.get(c);
+                if (is.eof())
+                    break;
+            }
+        } catch (std::ios_base::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_pointer_size.pass.cpp
new file mode 100644
index 0000000..76e860f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_pointer_size.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// In macosx10.9 to macosx10.14, streams are provided in the dylib AND they
+// have a bug in how they handle null-termination in case of errors (see D40677).
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& get(char_type* s, streamsize n);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("  \n    \n ");
+        std::istream is(&sb);
+        char s[5];
+        is.get(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "  ");
+        assert(is.gcount() == 2);
+        is.get(s, 5);
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.gcount() == 0);
+        is.clear();
+        assert(is.get() == '\n');
+        is.get(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "    ");
+        assert(is.gcount() == 4);
+        assert(is.get() == '\n');
+        is.get(s, 5);
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == " ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.get(s, 5);
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  \n    \n ");
+        std::wistream is(&sb);
+        wchar_t s[5];
+        is.get(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"  ");
+        assert(is.gcount() == 2);
+        is.get(s, 5);
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::wstring(s) == L"");
+        assert(is.gcount() == 0);
+        is.clear();
+        assert(is.get() == L'\n');
+        is.get(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"    ");
+        assert(is.gcount() == 4);
+        assert(is.get() == L'\n');
+        is.get(s, 5);
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L" ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.get(s, 5);
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::wstring(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::string(s) == " ");
+        assert(is.gcount() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::wstring(s) == L" ");
+        assert(is.gcount() == 1);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::failbit);
+        bool threw = false;
+        try {
+            is.get(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::failbit);
+        bool threw = false;
+        try {
+            is.get(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_pointer_size_chart.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_pointer_size_chart.pass.cpp
new file mode 100644
index 0000000..38b5163
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_pointer_size_chart.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// In macosx10.9 to macosx10.14, streams are provided in the dylib AND they
+// have a bug in how they handle null-termination in case of errors (see D40677).
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& get(char_type* s, streamsize n, char_type delim);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("  *    * ");
+        std::istream is(&sb);
+        char s[5];
+        is.get(s, 5, '*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "  ");
+        assert(is.gcount() == 2);
+        is.get(s, 5, '*');
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.gcount() == 0);
+        is.clear();
+        assert(is.get() == '*');
+        is.get(s, 5, '*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "    ");
+        assert(is.gcount() == 4);
+        assert(is.get() == '*');
+        is.get(s, 5, '*');
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == " ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.get(s, 5, '*');
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  *    * ");
+        std::wistream is(&sb);
+        wchar_t s[5];
+        is.get(s, 5, L'*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"  ");
+        assert(is.gcount() == 2);
+        is.get(s, 5, L'*');
+        assert(!is.eof());
+        assert( is.fail());
+        assert(std::wstring(s) == L"");
+        assert(is.gcount() == 0);
+        is.clear();
+        assert(is.get() == L'*');
+        is.get(s, 5, L'*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"    ");
+        assert(is.gcount() == 4);
+        assert(is.get() == L'*');
+        is.get(s, 5, L'*');
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L" ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.get(s, 5, L'*');
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::wstring(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(s, 5, '*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == " ");
+        assert(is.gcount() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(s, 5, L'*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L" ");
+        assert(is.gcount() == 1);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::failbit);
+        bool threw = false;
+        try {
+            is.get(s, 5, '*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::failbit);
+        bool threw = false;
+        try {
+            is.get(s, 5, L'*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_streambuf.pass.cpp
new file mode 100644
index 0000000..a6c6687
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_streambuf.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& get(basic_streambuf<char_type,traits>& sb);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+    testbuf(const std::basic_string<CharT>& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data() + str_.size()));
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("testing\n...");
+        std::istream is(&sb);
+        testbuf<char> sb2;
+        is.get(sb2);
+        assert(sb2.str() == "testing");
+        assert(is.good());
+        assert(is.gcount() == 7);
+        assert(is.get() == '\n');
+        is.get(sb2);
+        assert(sb2.str() == "testing...");
+        assert(is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 3);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"testing\n...");
+        std::wistream is(&sb);
+        testbuf<wchar_t> sb2;
+        is.get(sb2);
+        assert(sb2.str() == L"testing");
+        assert(is.good());
+        assert(is.gcount() == 7);
+        assert(is.get() == L'\n');
+        is.get(sb2);
+        assert(sb2.str() == L"testing...");
+        assert(is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 3);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        testbuf<char> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        testbuf<wchar_t> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#endif
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        testbuf<char> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        testbuf<wchar_t> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_streambuf_chart.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_streambuf_chart.pass.cpp
new file mode 100644
index 0000000..27d9ed8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/get_streambuf_chart.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& get(basic_streambuf<char_type,traits>& sb,
+//                                  char_type delim);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+    testbuf(const std::basic_string<CharT>& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data() + str_.size()));
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("testing*...");
+        std::istream is(&sb);
+        testbuf<char> sb2;
+        is.get(sb2, '*');
+        assert(sb2.str() == "testing");
+        assert(is.good());
+        assert(is.gcount() == 7);
+        assert(is.get() == '*');
+        is.get(sb2, '*');
+        assert(sb2.str() == "testing...");
+        assert(is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 3);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"testing*...");
+        std::wistream is(&sb);
+        testbuf<wchar_t> sb2;
+        is.get(sb2, L'*');
+        assert(sb2.str() == L"testing");
+        assert(is.good());
+        assert(is.gcount() == 7);
+        assert(is.get() == L'*');
+        is.get(sb2, L'*');
+        assert(sb2.str() == L"testing...");
+        assert(is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 3);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        testbuf<char> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2, '*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        testbuf<wchar_t> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2, L'*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        testbuf<char> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2, '*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        testbuf<wchar_t> sb2;
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.get(sb2, L'*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/getline_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/getline_pointer_size.pass.cpp
new file mode 100644
index 0000000..6e0d8b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/getline_pointer_size.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// In macosx10.9 to macosx10.14, streams are provided in the dylib AND they
+// have a bug in how they handle null-termination in case of errors (see D40677).
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& getline(char_type* s, streamsize n);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("  \n    \n ");
+        std::istream is(&sb);
+        char s[5];
+        is.getline(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "  ");
+        assert(is.gcount() == 3);
+        is.getline(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "    ");
+        assert(is.gcount() == 5);
+        is.getline(s, 5);
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == " ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.getline(s, 5);
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  \n    \n ");
+        std::wistream is(&sb);
+        wchar_t s[5];
+        is.getline(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"  ");
+        assert(is.gcount() == 3);
+        is.getline(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"    ");
+        assert(is.gcount() == 5);
+        is.getline(s, 5);
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L" ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.getline(s, 5);
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::wstring(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == " ");
+        assert(is.gcount() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L" ");
+        assert(is.gcount() == 1);
+    }
+#endif
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/getline_pointer_size_chart.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/getline_pointer_size_chart.pass.cpp
new file mode 100644
index 0000000..d07e74c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/getline_pointer_size_chart.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// In macosx10.9 to macosx10.14, streams are provided in the dylib AND they
+// have a bug in how they handle null-termination in case of errors (see D40677).
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& getline(char_type* s, streamsize n, char_type delim);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("  *    * ");
+        std::istream is(&sb);
+        char s[5];
+        is.getline(s, 5, '*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "  ");
+        assert(is.gcount() == 3);
+        is.getline(s, 5, '*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == "    ");
+        assert(is.gcount() == 5);
+        is.getline(s, 5, '*');
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::string(s) == " ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.getline(s, 5, '*');
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::string(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"  *    * ");
+        std::wistream is(&sb);
+        wchar_t s[5];
+        is.getline(s, 5, L'*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"  ");
+        assert(is.gcount() == 3);
+        is.getline(s, 5, L'*');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L"    ");
+        assert(is.gcount() == 5);
+        is.getline(s, 5, L'*');
+        assert( is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s) == L" ");
+        assert(is.gcount() == 1);
+        // Check that even in error case the buffer is properly 0-terminated.
+        is.getline(s, 5, L'*');
+        assert( is.eof());
+        assert( is.fail());
+        assert(std::wstring(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5, '*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == " ");
+        assert(is.gcount() == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5, L'*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L" ");
+        assert(is.gcount() == 1);
+    }
+#endif
+
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        char s[5] = "test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5, '*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<char>(s) == "");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        wchar_t s[5] = L"test";
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.getline(s, 5, L'*');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+        assert(threw);
+        assert(std::basic_string<wchar_t>(s) == L"");
+        assert(is.gcount() == 0);
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore.pass.cpp
new file mode 100644
index 0000000..0f1edcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>&
+//    ignore(streamsize n = 1, int_type delim = traits::eof());
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 1\n2345\n6");
+        std::istream is(&sb);
+        is.ignore();
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 1);
+        is.ignore(5, '\n');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 2);
+        is.ignore(15);
+        assert( is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 6);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 1\n2345\n6");
+        std::wistream is(&sb);
+        is.ignore();
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 1);
+        is.ignore(5, '\n');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 2);
+        is.ignore(15);
+        assert( is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 6);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb(" ");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.ignore(5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" ");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.ignore(5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp
new file mode 100644
index 0000000..2cd5e33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/ignore_0xff.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// basic_istream<charT,traits>&
+//    ignore(streamsize n = 1, int_type delim = traits::eof());
+
+// https://llvm.org/PR16427
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int bad=-1;
+    std::ostringstream os;
+    os << "aaaabbbb" << static_cast<char>(bad)
+       << "ccccdddd" << std::endl;
+    std::string s=os.str();
+
+    std::istringstream is(s);
+    const unsigned int ignoreLen=10;
+    std::istringstream::pos_type a=is.tellg();
+    is.ignore(ignoreLen);
+    std::istringstream::pos_type b=is.tellg();
+    assert((b-a)==ignoreLen);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/peek.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/peek.pass.cpp
new file mode 100644
index 0000000..2ca7016
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/peek.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// int_type peek();
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 1\n2345\n6");
+        std::istream is(&sb);
+        assert(is.peek() == ' ');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 0);
+        is.get();
+        assert(is.peek() == '1');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 1\n2345\n6");
+        std::wistream is(&sb);
+        assert(is.peek() == L' ');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 0);
+        is.get();
+        assert(is.peek() == L'1');
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 0);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.peek();
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+        bool threw = false;
+        try {
+            is.peek();
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert(!is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/putback.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/putback.pass.cpp
new file mode 100644
index 0000000..cb57b89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/putback.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// basic_istream<charT,traits>& putback(char_type c);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        is.get();
+        is.get();
+        is.get();
+        is.putback('a');
+        assert(is.bad());
+        assert(is.gcount() == 0);
+        is.clear();
+        is.putback('2');
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.putback('1');
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.putback(' ');
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.putback(' ');
+        assert(is.bad());
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        is.get();
+        is.get();
+        is.get();
+        is.putback(L'a');
+        assert(is.bad());
+        assert(is.gcount() == 0);
+        is.clear();
+        is.putback(L'2');
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.putback(L'1');
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.putback(L' ');
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.putback(L' ');
+        assert(is.bad());
+        assert(is.gcount() == 0);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::badbit);
+        bool threw = false;
+        try {
+            is.putback('x');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert( is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::badbit);
+        bool threw = false;
+        try {
+            is.putback(L'x');
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert( is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/read.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/read.pass.cpp
new file mode 100644
index 0000000..5f8c455
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/read.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <istream>
+
+// basic_istream<charT,traits>& read(char_type* s, streamsize n);
+
+#include <istream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        char s[5];
+        is.read(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s, 5) == " 1234");
+        assert(is.gcount() == 5);
+        is.read(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s, 5) == "56789");
+        assert(is.gcount() == 5);
+        is.read(s, 5);
+        assert( is.eof());
+        assert( is.fail());
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        wchar_t s[5];
+        is.read(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s, 5) == L" 1234");
+        assert(is.gcount() == 5);
+        is.read(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s, 5) == L"56789");
+        assert(is.gcount() == 5);
+        is.read(s, 5);
+        assert( is.eof());
+        assert( is.fail());
+        assert(is.gcount() == 0);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+        char s[10];
+        bool threw = false;
+        try {
+            is.read(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+        wchar_t s[10];
+        bool threw = false;
+        try {
+            is.read(s, 5);
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert(!is.bad());
+        assert( is.eof());
+        assert( is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/readsome.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/readsome.pass.cpp
new file mode 100644
index 0000000..3c523bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/readsome.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// streamsize readsome(char_type* s, streamsize n);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 1234567890");
+        std::istream is(&sb);
+        char s[5];
+        assert(is.readsome(s, 5) == 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s, 5) == " 1234");
+        assert(is.gcount() == 5);
+        is.readsome(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::string(s, 5) == "56789");
+        assert(is.gcount() == 5);
+        is.readsome(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 1);
+        assert(std::string(s, 1) == "0");
+        assert(is.readsome(s, 5) == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 1234567890");
+        std::wistream is(&sb);
+        wchar_t s[5];
+        assert(is.readsome(s, 5) == 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s, 5) == L" 1234");
+        assert(is.gcount() == 5);
+        is.readsome(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(std::wstring(s, 5) == L"56789");
+        assert(is.gcount() == 5);
+        is.readsome(s, 5);
+        assert(!is.eof());
+        assert(!is.fail());
+        assert(is.gcount() == 1);
+        assert(std::wstring(s, 1) == L"0");
+        assert(is.readsome(s, 5) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/seekg.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/seekg.pass.cpp
new file mode 100644
index 0000000..7bbbf94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/seekg.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// basic_istream<charT,traits>& seekg(pos_type pos);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+protected:
+    typename base::pos_type seekpos(typename base::pos_type sp,
+                                    std::ios_base::openmode which)
+    {
+        assert(which == std::ios_base::in);
+        return sp;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        is.seekg(5);
+        assert(is.good());
+        is.seekg(-1);
+        assert(is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        is.seekg(5);
+        assert(is.good());
+        is.seekg(-1);
+        assert(is.fail());
+    }
+#endif
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        is.setstate(std::ios_base::eofbit);
+        assert(is.eof());
+        is.seekg(5);
+        assert(is.good());
+        assert(!is.eof());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/seekg_off.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/seekg_off.pass.cpp
new file mode 100644
index 0000000..a5aaf21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/seekg_off.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <istream>
+
+// basic_istream<charT,traits>& seekg(off_type off, ios_base::seekdir dir);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int seekoff_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+protected:
+    typename base::pos_type seekoff(typename base::off_type off,
+                                    std::ios_base::seekdir,
+                                    std::ios_base::openmode which)
+    {
+        assert(which == std::ios_base::in);
+        ++seekoff_called;
+        return off;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        is.seekg(5, std::ios_base::cur);
+        assert(is.good());
+        assert(seekoff_called == 1);
+        is.seekg(-1, std::ios_base::beg);
+        assert(is.fail());
+        assert(seekoff_called == 2);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        is.seekg(5, std::ios_base::cur);
+        assert(is.good());
+        assert(seekoff_called == 3);
+        is.seekg(-1, std::ios_base::beg);
+        assert(is.fail());
+        assert(seekoff_called == 4);
+    }
+#endif
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        is.setstate(std::ios_base::eofbit);
+        assert(is.eof());
+        is.seekg(5, std::ios_base::beg);
+        assert(is.good());
+        assert(!is.eof());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/sync.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/sync.pass.cpp
new file mode 100644
index 0000000..ec1195d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/sync.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// int sync();
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+
+protected:
+    int sync()
+    {
+        ++sync_called;
+        return 5;
+    }
+};
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct testbuf_exception { };
+
+template <class CharT>
+struct throwing_testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    throwing_testbuf() {}
+    throwing_testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+
+protected:
+    virtual int sync()
+    {
+        throw testbuf_exception();
+        return 5;
+    }
+};
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        assert(is.sync() == 0);
+        assert(sync_called == 1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        assert(is.sync() == 0);
+        assert(sync_called == 2);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        throwing_testbuf<char> sb(" 123456789");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::badbit);
+        bool threw = false;
+        try {
+            is.sync();
+        } catch (testbuf_exception const&) {
+            threw = true;
+        }
+        assert( is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+        assert(threw);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        throwing_testbuf<wchar_t> sb(L" 123456789");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::badbit);
+        bool threw = false;
+        try {
+            is.sync();
+        } catch (testbuf_exception const&) {
+            threw = true;
+        }
+        assert( is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+        assert(threw);
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/tellg.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/tellg.pass.cpp
new file mode 100644
index 0000000..816e400
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/tellg.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// pos_type tellg();
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+protected:
+    typename base::pos_type seekoff(typename base::off_type off,
+                                    std::ios_base::seekdir way,
+                                    std::ios_base::openmode which)
+    {
+        assert(off == 0);
+        assert(way == std::ios_base::cur);
+        assert(which == std::ios_base::in);
+        return 5;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        assert(is.tellg() == 5);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        assert(is.tellg() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/unget.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/unget.pass.cpp
new file mode 100644
index 0000000..eddfaa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/unget.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// basic_istream<charT,traits>& unget();
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb(" 123456789");
+        std::istream is(&sb);
+        is.get();
+        is.get();
+        is.get();
+        is.unget();
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.unget();
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.unget();
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.unget();
+        assert(is.bad());
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L" 123456789");
+        std::wistream is(&sb);
+        is.get();
+        is.get();
+        is.get();
+        is.unget();
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.unget();
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.unget();
+        assert(is.good());
+        assert(is.gcount() == 0);
+        is.unget();
+        assert(is.bad());
+        assert(is.gcount() == 0);
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::badbit);
+        bool threw = false;
+        try {
+            is.unget();
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert( is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::badbit);
+        bool threw = false;
+        try {
+            is.unget();
+        } catch (std::ios_base::failure&) {
+            threw = true;
+        }
+        assert(threw);
+        assert( is.bad());
+        assert(!is.eof());
+        assert( is.fail());
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..64ddcf2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.assign/member_swap.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream;
+
+// void swap(basic_istream& rhs);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_istream
+    : public std::basic_istream<CharT>
+{
+    typedef std::basic_istream<CharT> base;
+    test_istream(testbuf<CharT>* sb) : base(sb) {}
+
+    void swap(test_istream& s) {base::swap(s);}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_istream<char> is1(&sb1);
+        test_istream<char> is2(&sb2);
+        is1.swap(is2);
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_istream<wchar_t> is1(&sb1);
+        test_istream<wchar_t> is2(&sb2);
+        is1.swap(is2);
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..fd79726
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.assign/move_assign.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream;
+
+// basic_istream& operator=(basic_istream&& rhs);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_istream
+    : public std::basic_istream<CharT>
+{
+    typedef std::basic_istream<CharT> base;
+    test_istream(testbuf<CharT>* sb) : base(sb) {}
+
+    test_istream& operator=(test_istream&& s)
+        {base::operator=(std::move(s)); return *this;}
+};
+
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_istream<char> is1(&sb1);
+        test_istream<char> is2(&sb2);
+        is2 = (std::move(is1));
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_istream<wchar_t> is1(&sb1);
+        test_istream<wchar_t> is2(&sb2);
+        is2 = (std::move(is1));
+        assert(is1.rdbuf() == &sb1);
+        assert(is1.tie() == 0);
+        assert(is1.fill() == ' ');
+        assert(is1.rdstate() == is1.goodbit);
+        assert(is1.exceptions() == is1.goodbit);
+        assert(is1.flags() == (is1.skipws | is1.dec));
+        assert(is1.precision() == 6);
+        assert(is1.getloc().name() == "C");
+        assert(is2.rdbuf() == &sb2);
+        assert(is2.tie() == 0);
+        assert(is2.fill() == ' ');
+        assert(is2.rdstate() == is2.goodbit);
+        assert(is2.exceptions() == is2.goodbit);
+        assert(is2.flags() == (is2.skipws | is2.dec));
+        assert(is2.precision() == 6);
+        assert(is2.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/copy.fail.cpp
new file mode 100644
index 0000000..90e5315
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/copy.fail.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream;
+
+// basic_istream(basic_istream const& rhs) = delete;
+// basic_istream& operator=(basic_istream const&) = delete;
+
+#include <istream>
+#include <type_traits>
+#include <cassert>
+
+struct test_istream
+    : public std::basic_istream<char>
+{
+    typedef std::basic_istream<char> base;
+
+    test_istream(test_istream&& s)
+        : base(std::move(s)) // OK
+    {
+    }
+
+    test_istream& operator=(test_istream&& s) {
+      base::operator=(std::move(s)); // OK
+      return *this;
+    }
+
+    test_istream(test_istream const& s)
+        : base(s) // expected-error {{call to deleted constructor of 'std::basic_istream<char>'}}
+    {
+    }
+
+    test_istream& operator=(test_istream const& s) {
+      base::operator=(s); // expected-error {{call to deleted member function 'operator='}}
+      return *this;
+    }
+
+};
+
+int main(int, char**)
+{
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/move.pass.cpp
new file mode 100644
index 0000000..4f46ff5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/move.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream;
+
+// basic_istream(basic_istream&& rhs);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_istream
+    : public std::basic_istream<CharT>
+{
+    typedef std::basic_istream<CharT> base;
+    test_istream(testbuf<CharT>* sb) : base(sb) {}
+
+    test_istream(test_istream&& s)
+        : base(std::move(s)) {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        test_istream<char> is1(&sb);
+        test_istream<char> is(std::move(is1));
+        assert(is1.rdbuf() == &sb);
+        assert(is1.gcount() == 0);
+        assert(is.gcount() == 0);
+        assert(is.rdbuf() == 0);
+        assert(is.tie() == 0);
+        assert(is.fill() == ' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        test_istream<wchar_t> is1(&sb);
+        test_istream<wchar_t> is(std::move(is1));
+        assert(is1.gcount() == 0);
+        assert(is.gcount() == 0);
+        assert(is1.rdbuf() == &sb);
+        assert(is.rdbuf() == 0);
+        assert(is.tie() == 0);
+        assert(is.fill() == L' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/streambuf.pass.cpp
new file mode 100644
index 0000000..b2b428e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream.cons/streambuf.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream;
+
+// explicit basic_istream(basic_streambuf<charT,traits>* sb);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        assert(is.rdbuf() == &sb);
+        assert(is.tie() == 0);
+        assert(is.fill() == ' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+        assert(is.gcount() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        assert(is.rdbuf() == &sb);
+        assert(is.tie() == 0);
+        assert(is.fill() == L' ');
+        assert(is.rdstate() == is.goodbit);
+        assert(is.exceptions() == is.goodbit);
+        assert(is.flags() == (is.skipws | is.dec));
+        assert(is.precision() == 6);
+        assert(is.getloc().name() == "C");
+        assert(is.gcount() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream_sentry/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream_sentry/ctor.pass.cpp
new file mode 100644
index 0000000..fa094d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/istream_sentry/ctor.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream::sentry;
+
+// explicit sentry(basic_istream<charT,traits>& is, bool noskipws = false);
+
+#include <istream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_string<CharT> string_type;
+    typedef std::basic_streambuf<CharT> base;
+private:
+    string_type str_;
+public:
+
+    testbuf() {}
+    testbuf(const string_type& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()) + str_.size());
+    }
+
+    CharT* eback() const {return base::eback();}
+    CharT* gptr() const {return base::gptr();}
+    CharT* egptr() const {return base::egptr();}
+protected:
+
+    int virtual sync()
+    {
+        ++sync_called;
+        return 1;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        std::istream is((testbuf<char>*)0);
+        std::istream::sentry sen(is, true);
+        assert(!(bool)sen);
+        assert(!is.good());
+        assert(is.gcount() == 0);
+        assert(sync_called == 0);
+    }
+    {
+        testbuf<char> sb("   123");
+        std::istream is(&sb);
+        std::istream::sentry sen(is, true);
+        assert((bool)sen);
+        assert(is.good());
+        assert(is.gcount() == 0);
+        assert(sync_called == 0);
+        assert(sb.gptr() == sb.eback());
+    }
+    {
+        testbuf<char> sb("   123");
+        std::istream is(&sb);
+        std::istream::sentry sen(is);
+        assert((bool)sen);
+        assert(is.good());
+        assert(sync_called == 0);
+        assert(sb.gptr() == sb.eback() + 3);
+    }
+    {
+        testbuf<char> sb("      ");
+        std::istream is(&sb);
+        std::istream::sentry sen(is);
+        assert(!(bool)sen);
+        assert(is.fail());
+        assert(is.eof());
+        assert(sync_called == 0);
+        assert(sb.gptr() == sb.eback() + 6);
+    }
+    {
+        testbuf<char> sb("      ");
+        std::istream is(&sb);
+        std::istream::sentry sen(is, true);
+        assert((bool)sen);
+        assert(is.good());
+        assert(sync_called == 0);
+        assert(sb.gptr() == sb.eback());
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistream is((testbuf<wchar_t>*)0);
+        std::wistream::sentry sen(is, true);
+        assert(!(bool)sen);
+        assert(!is.good());
+        assert(is.gcount() == 0);
+        assert(sync_called == 0);
+    }
+    {
+        testbuf<wchar_t> sb(L"   123");
+        std::wistream is(&sb);
+        std::wistream::sentry sen(is, true);
+        assert((bool)sen);
+        assert(is.good());
+        assert(is.gcount() == 0);
+        assert(sync_called == 0);
+        assert(sb.gptr() == sb.eback());
+    }
+    {
+        testbuf<wchar_t> sb(L"   123");
+        std::wistream is(&sb);
+        std::wistream::sentry sen(is);
+        assert((bool)sen);
+        assert(is.good());
+        assert(sync_called == 0);
+        assert(sb.gptr() == sb.eback() + 3);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/types.pass.cpp
new file mode 100644
index 0000000..7470adf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/input.streams/istream/types.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <istream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_istream
+//     : virtual public basic_ios<charT,traits>
+// {
+// public:
+//     // types (inherited from basic_ios (27.5.4)):
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <istream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_ios<char>, std::basic_istream<char> >::value), "");
+    static_assert((std::is_same<std::basic_istream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_istream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_istream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_istream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_istream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..032d2cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.assign/member_swap.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream;
+
+// void swap(basic_ostream& rhs);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_ostream
+    : public std::basic_ostream<CharT>
+{
+    typedef std::basic_ostream<CharT> base;
+    test_ostream(testbuf<CharT>* sb) : base(sb) {}
+
+    void swap(test_ostream& s) {base::swap(s);}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_ostream<char> os1(&sb1);
+        test_ostream<char> os2(&sb2);
+        os1.swap(os2);
+        assert(os1.rdbuf() == &sb1);
+        assert(os1.tie() == 0);
+        assert(os1.fill() == ' ');
+        assert(os1.rdstate() == os1.goodbit);
+        assert(os1.exceptions() == os1.goodbit);
+        assert(os1.flags() == (os1.skipws | os1.dec));
+        assert(os1.precision() == 6);
+        assert(os1.getloc().name() == "C");
+        assert(os2.rdbuf() == &sb2);
+        assert(os2.tie() == 0);
+        assert(os2.fill() == ' ');
+        assert(os2.rdstate() == os2.goodbit);
+        assert(os2.exceptions() == os2.goodbit);
+        assert(os2.flags() == (os2.skipws | os2.dec));
+        assert(os2.precision() == 6);
+        assert(os2.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_ostream<wchar_t> os1(&sb1);
+        test_ostream<wchar_t> os2(&sb2);
+        os1.swap(os2);
+        assert(os1.rdbuf() == &sb1);
+        assert(os1.tie() == 0);
+        assert(os1.fill() == ' ');
+        assert(os1.rdstate() == os1.goodbit);
+        assert(os1.exceptions() == os1.goodbit);
+        assert(os1.flags() == (os1.skipws | os1.dec));
+        assert(os1.precision() == 6);
+        assert(os1.getloc().name() == "C");
+        assert(os2.rdbuf() == &sb2);
+        assert(os2.tie() == 0);
+        assert(os2.fill() == ' ');
+        assert(os2.rdstate() == os2.goodbit);
+        assert(os2.exceptions() == os2.goodbit);
+        assert(os2.flags() == (os2.skipws | os2.dec));
+        assert(os2.precision() == 6);
+        assert(os2.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..dbac838
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.assign/move_assign.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream;
+
+// basic_ostream& operator=(basic_ostream&& rhs);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_ostream
+    : public std::basic_ostream<CharT>
+{
+    typedef std::basic_ostream<CharT> base;
+    test_ostream(testbuf<CharT>* sb) : base(sb) {}
+
+    test_ostream& operator=(test_ostream&& s)
+        {base::operator=(std::move(s)); return *this;}
+};
+
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_ostream<char> os1(&sb1);
+        test_ostream<char> os2(&sb2);
+        os2 = (std::move(os1));
+        assert(os1.rdbuf() == &sb1);
+        assert(os1.tie() == 0);
+        assert(os1.fill() == ' ');
+        assert(os1.rdstate() == os1.goodbit);
+        assert(os1.exceptions() == os1.goodbit);
+        assert(os1.flags() == (os1.skipws | os1.dec));
+        assert(os1.precision() == 6);
+        assert(os1.getloc().name() == "C");
+        assert(os2.rdbuf() == &sb2);
+        assert(os2.tie() == 0);
+        assert(os2.fill() == ' ');
+        assert(os2.rdstate() == os2.goodbit);
+        assert(os2.exceptions() == os2.goodbit);
+        assert(os2.flags() == (os2.skipws | os2.dec));
+        assert(os2.precision() == 6);
+        assert(os2.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_ostream<wchar_t> os1(&sb1);
+        test_ostream<wchar_t> os2(&sb2);
+        os2 = (std::move(os1));
+        assert(os1.rdbuf() == &sb1);
+        assert(os1.tie() == 0);
+        assert(os1.fill() == ' ');
+        assert(os1.rdstate() == os1.goodbit);
+        assert(os1.exceptions() == os1.goodbit);
+        assert(os1.flags() == (os1.skipws | os1.dec));
+        assert(os1.precision() == 6);
+        assert(os1.getloc().name() == "C");
+        assert(os2.rdbuf() == &sb2);
+        assert(os2.tie() == 0);
+        assert(os2.fill() == ' ');
+        assert(os2.rdstate() == os2.goodbit);
+        assert(os2.exceptions() == os2.goodbit);
+        assert(os2.flags() == (os2.skipws | os2.dec));
+        assert(os2.precision() == 6);
+        assert(os2.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.cons/move.pass.cpp
new file mode 100644
index 0000000..d2de7b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.cons/move.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream;
+
+// basic_ostream(basic_ostream&& rhs);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_ostream
+    : public std::basic_ostream<CharT>
+{
+    typedef std::basic_ostream<CharT> base;
+    test_ostream(testbuf<CharT>* sb) : base(sb) {}
+
+    test_ostream(test_ostream&& s)
+        : base(std::move(s)) {}
+};
+
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        test_ostream<char> os1(&sb);
+        test_ostream<char> os(std::move(os1));
+        assert(os1.rdbuf() == &sb);
+        assert(os.rdbuf() == 0);
+        assert(os.tie() == 0);
+        assert(os.fill() == ' ');
+        assert(os.rdstate() == os.goodbit);
+        assert(os.exceptions() == os.goodbit);
+        assert(os.flags() == (os.skipws | os.dec));
+        assert(os.precision() == 6);
+        assert(os.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        test_ostream<wchar_t> os1(&sb);
+        test_ostream<wchar_t> os(std::move(os1));
+        assert(os1.rdbuf() == &sb);
+        assert(os.rdbuf() == 0);
+        assert(os.tie() == 0);
+        assert(os.fill() == L' ');
+        assert(os.rdstate() == os.goodbit);
+        assert(os.exceptions() == os.goodbit);
+        assert(os.flags() == (os.skipws | os.dec));
+        assert(os.precision() == 6);
+        assert(os.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.cons/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.cons/streambuf.pass.cpp
new file mode 100644
index 0000000..1c38a68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.cons/streambuf.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream;
+
+// explicit basic_ostream(basic_streambuf<charT,traits>* sb);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::basic_ostream<char> os(&sb);
+        assert(os.rdbuf() == &sb);
+        assert(os.tie() == 0);
+        assert(os.fill() == ' ');
+        assert(os.rdstate() == os.goodbit);
+        assert(os.exceptions() == os.goodbit);
+        assert(os.flags() == (os.skipws | os.dec));
+        assert(os.precision() == 6);
+        assert(os.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::basic_ostream<wchar_t> os(&sb);
+        assert(os.rdbuf() == &sb);
+        assert(os.tie() == 0);
+        assert(os.fill() == L' ');
+        assert(os.rdstate() == os.goodbit);
+        assert(os.exceptions() == os.goodbit);
+        assert(os.flags() == (os.skipws | os.dec));
+        assert(os.precision() == 6);
+        assert(os.getloc().name() == "C");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.formatted.reqmts/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.formatted.reqmts/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.formatted.reqmts/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/bool.pass.cpp
new file mode 100644
index 0000000..6b81287
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/bool.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(bool val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        bool b = false;
+        os << b;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        bool b = false;
+        os << b;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        bool b = true;
+        os << b;
+        assert(sb.str() == "1");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::boolalpha(os);
+        bool b = true;
+        os << b;
+        assert(sb.str() == "true");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::boolalpha(os);
+        bool b = false;
+        os << b;
+        assert(sb.str() == "false");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/double.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/double.pass.cpp
new file mode 100644
index 0000000..0cda918
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/double.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(double val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        double n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        double n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        double n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        double n = -10.5;
+        os << n;
+        assert(sb.str() == "-10.5");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/float.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/float.pass.cpp
new file mode 100644
index 0000000..a28e757
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/float.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(float val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        float n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        float n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        float n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        float n = -10.5;
+        os << n;
+        assert(sb.str() == "-10.5");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/int.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/int.pass.cpp
new file mode 100644
index 0000000..732b611
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/int.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(int val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        int n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        int n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        int n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        int n = -10;
+        os << n;
+        assert(sb.str() == "fffffff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long.pass.cpp
new file mode 100644
index 0000000..2eb5e55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(long val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        long n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        long n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        long n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        long n = 0xfffffff6;
+        os << n;
+        assert(sb.str() == "fffffff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long_double.pass.cpp
new file mode 100644
index 0000000..8fafd7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long_double.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(long double val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        long double n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        long double n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        long double n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        long double n = -10.5;
+        os << n;
+        assert(sb.str() == "-10.5");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long_long.pass.cpp
new file mode 100644
index 0000000..a724a6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/long_long.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(long long val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        long long n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        long long n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        long long n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        long long n = -10;
+        os << n;
+        assert(sb.str() == "fffffffffffffff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minmax_showbase.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minmax_showbase.pass.cpp
new file mode 100644
index 0000000..1261512
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minmax_showbase.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(short n);
+// operator<<(unsigned short n);
+// operator<<(int n);
+// operator<<(unsigned int n);
+// operator<<(long n);
+// operator<<(unsigned long n);
+// operator<<(long long n);
+// operator<<(unsigned long long n);
+
+//  Testing to make sure that the max length values are correctly inserted when
+//  using std::showbase
+
+// This test exposes a regression that was not fixed yet in the libc++
+// shipped with macOS 10.12, 10.13 and 10.14. See D32670 for details.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{12|13|14}}
+
+#include <cassert>
+#include <cstdint>
+#include <ios>
+#include <limits>
+#include <sstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <typename T>
+static void test(std::ios_base::fmtflags fmt, const char *expected)
+{
+    std::stringstream ss;
+    ss.setf(fmt, std::ios_base::basefield);
+    ss << std::showbase << (std::is_signed<T>::value ? std::numeric_limits<T>::min() : std::numeric_limits<T>::max());
+    assert(ss.str() == expected);
+}
+
+int main(int, char**)
+{
+    const std::ios_base::fmtflags o = std::ios_base::oct;
+    const std::ios_base::fmtflags d = std::ios_base::dec;
+    const std::ios_base::fmtflags x = std::ios_base::hex;
+
+    test<short>(o, "0100000");
+    test<short>(d, "-32768");
+    test<short>(x, "0x8000");
+
+    test<unsigned short>(o, "0177777");
+    test<unsigned short>(d, "65535");
+    test<unsigned short>(x, "0xffff");
+
+    test<int>(o, "020000000000");
+    test<int>(d, "-2147483648");
+    test<int>(x, "0x80000000");
+
+    test<unsigned int>(o, "037777777777");
+    test<unsigned int>(d, "4294967295");
+    test<unsigned int>(x, "0xffffffff");
+
+    const bool long_is_32 = std::integral_constant<bool, sizeof(long) == sizeof(int32_t)>::value; // avoid compiler warnings
+    const bool long_is_64 = std::integral_constant<bool, sizeof(long) == sizeof(int64_t)>::value; // avoid compiler warnings
+    const bool long_long_is_64 = std::integral_constant<bool, sizeof(long long) == sizeof(int64_t)>::value; // avoid compiler warnings
+
+    if (long_is_32) {
+        test<long>(o, "020000000000");
+        test<long>(d, "-2147483648");
+        test<long>(x, "0x80000000");
+
+        test<unsigned long>(o, "037777777777");
+        test<unsigned long>(d, "4294967295");
+        test<unsigned long>(x, "0xffffffff");
+    } else if (long_is_64) {
+        test<long>(o, "01000000000000000000000");
+        test<long>(d, "-9223372036854775808");
+        test<long>(x, "0x8000000000000000");
+
+        test<unsigned long>(o, "01777777777777777777777");
+        test<unsigned long>(d, "18446744073709551615");
+        test<unsigned long>(x, "0xffffffffffffffff");
+    }
+    if (long_long_is_64) {
+        test<long long>(o, "01000000000000000000000");
+        test<long long>(d, "-9223372036854775808");
+        test<long long>(x, "0x8000000000000000");
+
+        test<unsigned long long>(o, "01777777777777777777777");
+        test<unsigned long long>(d, "18446744073709551615");
+        test<unsigned long long>(x, "0xffffffffffffffff");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minus1.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minus1.pass.cpp
new file mode 100644
index 0000000..8e3b77c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/minus1.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.12
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<( int16_t val);
+// operator<<(uint16_t val);
+// operator<<( int32_t val);
+// operator<<(uint32_t val);
+// operator<<( int64_t val);
+// operator<<(uint64_t val);
+
+//  Testing to make sure that the max length values are correctly inserted
+
+#include <sstream>
+#include <ios>
+#include <type_traits>
+#include <cctype>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+void test_octal(const char *expected)
+{
+    std::stringstream ss;
+    ss << std::oct << static_cast<T>(-1);
+    assert(ss.str() == expected);
+}
+
+template <typename T>
+void test_dec(const char *expected)
+{
+    std::stringstream ss;
+    ss << std::dec << static_cast<T>(-1);
+    assert(ss.str() == expected);
+}
+
+template <typename T>
+void test_hex(const char *expected)
+{
+    std::stringstream ss;
+    ss << std::hex << static_cast<T>(-1);
+
+    std::string str = ss.str();
+    for (size_t i = 0; i < str.size(); ++i )
+        str[i] = static_cast<char>(std::toupper(str[i]));
+
+    assert(str == expected);
+}
+
+int main(int, char**)
+{
+
+    test_octal<uint16_t>(                "177777");
+    test_octal< int16_t>(                "177777");
+    test_octal<uint32_t>(           "37777777777");
+    test_octal< int32_t>(           "37777777777");
+    test_octal<uint64_t>("1777777777777777777777");
+    test_octal< int64_t>("1777777777777777777777");
+    test_octal<uint64_t>("1777777777777777777777");
+
+    const bool long_is_64 = std::integral_constant<bool, sizeof(long) == sizeof(int64_t)>::value; // avoid compiler warnings
+    const bool long_long_is_64 = std::integral_constant<bool, sizeof(long long) == sizeof(int64_t)>::value; // avoid compiler warnings
+
+    if (long_is_64) {
+        test_octal< unsigned long>("1777777777777777777777");
+        test_octal<          long>("1777777777777777777777");
+    }
+    if (long_long_is_64) {
+        test_octal< unsigned long long>("1777777777777777777777");
+        test_octal<          long long>("1777777777777777777777");
+    }
+
+    test_dec<uint16_t>(               "65535");
+    test_dec< int16_t>(                  "-1");
+    test_dec<uint32_t>(          "4294967295");
+    test_dec< int32_t>(                  "-1");
+    test_dec<uint64_t>("18446744073709551615");
+    test_dec< int64_t>(                  "-1");
+    if (long_is_64) {
+        test_dec<unsigned long>("18446744073709551615");
+        test_dec<         long>(                  "-1");
+    }
+    if (long_long_is_64) {
+        test_dec<unsigned long long>("18446744073709551615");
+        test_dec<         long long>(                  "-1");
+    }
+
+    test_hex<uint16_t>(            "FFFF");
+    test_hex< int16_t>(            "FFFF");
+    test_hex<uint32_t>(        "FFFFFFFF");
+    test_hex< int32_t>(        "FFFFFFFF");
+    test_hex<uint64_t>("FFFFFFFFFFFFFFFF");
+    test_hex< int64_t>("FFFFFFFFFFFFFFFF");
+    if (long_is_64) {
+        test_hex<unsigned long>("FFFFFFFFFFFFFFFF");
+        test_hex<         long>("FFFFFFFFFFFFFFFF");
+    }
+    if (long_long_is_64) {
+        test_hex<unsigned long long>("FFFFFFFFFFFFFFFF");
+        test_hex<         long long>("FFFFFFFFFFFFFFFF");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/pointer.pass.cpp
new file mode 100644
index 0000000..61fd0a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/pointer.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(const void* val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        const void* n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb1;
+        std::ostream os1(&sb1);
+        int n1;
+        os1 << &n1;
+        assert(os1.good());
+        std::string s1(sb1.str());
+
+        testbuf<char> sb2;
+        std::ostream os2(&sb2);
+        int n2;
+        os2 << &n2;
+        assert(os2.good());
+        std::string s2(sb2.str());
+
+        // %p is implementation defined. Instead of validating the
+        // output, at least ensure that it does not generate an empty
+        // string. Also make sure that given two distinct addresses, the
+        // output of %p is different.
+        assert(!s1.empty());
+        assert(!s2.empty());
+        assert(s1 != s2);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        const void* n = &sb;
+        os << n;
+        assert(os.good());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/pointer.volatile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/pointer.volatile.pass.cpp
new file mode 100644
index 0000000..0538dcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/pointer.volatile.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// This test fails in Windows DLL configurations, due to
+// __exclude_from_explicit_instantiation__ not behaving as it should in
+// combination with dllimport (https://llvm.org/PR41018), in combination
+// with running tests in c++2b mode while building the library in c++20 mode.
+//
+// If the library was built in c++2b mode, this test would succeed.
+//
+// Older CMake passed -std:c++latest to set C++ 20 mode on clang-cl, which
+// hid this issue. With newer CMake versions, it passes -std:c++20 which
+// makes this fail.
+//
+// Marking as UNSUPPORTED instead of XFAIL to avoid spurious failures/successes
+// depending on the version of CMake used.
+// TODO: Remove this when the library is built in c++2b mode.
+//
+// UNSUPPORTED: windows-dll
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream& operator<<(const volatile void* val);
+
+#include <ostream>
+#include <cassert>
+
+template <class CharT>
+class testbuf : public std::basic_streambuf<CharT> {
+  typedef std::basic_streambuf<CharT> base;
+  std::basic_string<CharT> str_;
+
+public:
+  testbuf() {}
+
+  std::basic_string<CharT> str() const { return std::basic_string<CharT>(base::pbase(), base::pptr()); }
+
+protected:
+  virtual typename base::int_type overflow(typename base::int_type ch = base::traits_type::eof()) {
+    if (ch != base::traits_type::eof()) {
+      int n = static_cast<int>(str_.size());
+      str_.push_back(static_cast<CharT>(ch));
+      str_.resize(str_.capacity());
+      base::setp(const_cast<CharT*>(str_.data()), const_cast<CharT*>(str_.data() + str_.size()));
+      base::pbump(n + 1);
+    }
+    return ch;
+  }
+};
+
+int main(int, char**) {
+  testbuf<char> sb1;
+  std::ostream os1(&sb1);
+  int n1;
+  os1 << &n1;
+  assert(os1.good());
+  std::string s1 = sb1.str();
+
+  testbuf<char> sb2;
+  std::ostream os2(&sb2);
+  os2 << static_cast<volatile void*>(&n1);
+  assert(os2.good());
+  std::string s2 = sb2.str();
+
+  testbuf<char> sb3;
+  std::ostream os3(&sb3);
+  volatile int n3;
+  os3 << &n3;
+  assert(os3.good());
+  std::string s3 = sb3.str();
+
+  // %p is implementation defined. Instead of validating the
+  // output, at least ensure that it does not generate an empty
+  // string. Also make sure that given two distinct addresses, the
+  // output of %p is different.
+  assert(!s1.empty());
+  assert(!s2.empty());
+  assert(s1 == s2);
+
+  assert(!s3.empty());
+  assert(s2 != s3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/short.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/short.pass.cpp
new file mode 100644
index 0000000..475d518
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/short.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(short val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        short n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        short n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        short n = -10;
+        os << n;
+        assert(sb.str() == "-10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        short n = -10;
+        os << n;
+        assert(sb.str() == "fff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_int.pass.cpp
new file mode 100644
index 0000000..54ba23e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_int.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(unsigned int val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        unsigned int n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned int n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned int n = 10;
+        os << n;
+        assert(sb.str() == "10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        unsigned int n = 0xFFF6;
+        os << n;
+        assert(sb.str() == "fff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_long.pass.cpp
new file mode 100644
index 0000000..e84f214
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_long.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(unsigned long val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        unsigned long n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned long n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned long n = 10;
+        os << n;
+        assert(sb.str() == "10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        unsigned long n = 0xfffffff6;
+        os << n;
+        assert(sb.str() == "fffffff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_long_long.pass.cpp
new file mode 100644
index 0000000..34b5302
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_long_long.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(unsigned long long val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        unsigned long long n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned long long n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned long long n = 10;
+        os << n;
+        assert(sb.str() == "10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        unsigned long long n = static_cast<unsigned long long>(-10);
+        os << n;
+        assert(sb.str() == "fffffffffffffff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_short.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_short.pass.cpp
new file mode 100644
index 0000000..d24f7ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.arithmetic/unsigned_short.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// operator<<(unsigned short val);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        unsigned short n = 0;
+        os << n;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned short n = 0;
+        os << n;
+        assert(sb.str() == "0");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned short n = 10;
+        os << n;
+        assert(sb.str() == "10");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::hex(os);
+        unsigned short n = 0xFFF6;
+        os << n;
+        assert(sb.str() == "fff6");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/CharT.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/CharT.pass.cpp
new file mode 100644
index 0000000..2611bb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/CharT.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class charT, class traits>
+//   basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>& out, charT c);
+
+// XFAIL: no-wide-characters
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(ch);
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::wostream os((std::wstreambuf*)0);
+        wchar_t c = L'a';
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        wchar_t c = L'a';
+        os << c;
+        assert(sb.str() == L"a");
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        wchar_t c = L'a';
+        os << c;
+        assert(sb.str() == L"    a");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        std::left(os);
+        wchar_t c = L'a';
+        os << c;
+        assert(sb.str() == L"a    ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/CharT_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/CharT_pointer.pass.cpp
new file mode 100644
index 0000000..190d4ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/CharT_pointer.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class charT, class traits>
+//   basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>& out, const charT* s);
+
+// XFAIL: no-wide-characters
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(ch);
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::wostream os((std::wstreambuf*)0);
+        const wchar_t* c = L"123";
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        const wchar_t* c = L"123";
+        os << c;
+        assert(sb.str() == L"123");
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        const wchar_t* c = L"123";
+        os << c;
+        assert(sb.str() == L"  123");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        std::left(os);
+        const wchar_t* c = L"123";
+        os << c;
+        assert(sb.str() == L"123  ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char.pass.cpp
new file mode 100644
index 0000000..d9dd4f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class char, class traits>
+//   basic_ostream<char,traits>& operator<<(basic_ostream<char,traits>& out, char c);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        char c = 'a';
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        char c = 'a';
+        os << c;
+        assert(sb.str() == "a");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        char c = 'a';
+        os << c;
+        assert(sb.str() == "    a");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        std::left(os);
+        char c = 'a';
+        os << c;
+        assert(sb.str() == "a    ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_pointer.pass.cpp
new file mode 100644
index 0000000..f8c9aca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_pointer.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class traits>
+//   basic_ostream<char,traits>& operator<<(basic_ostream<char,traits>& out, const char* s);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        const char* c = "123";
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        const char* c = "123";
+        os << c;
+        assert(sb.str() == "123");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        const char* c = "123";
+        os << c;
+        assert(sb.str() == "  123");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        std::left(os);
+        const char* c = "123";
+        os << c;
+        assert(sb.str() == "123  ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_to_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_to_wide.pass.cpp
new file mode 100644
index 0000000..34bc847
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_to_wide.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class charT, class traits>
+//   basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>& out, char c);
+
+// XFAIL: no-wide-characters
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(ch);
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::wostream os((std::wstreambuf*)0);
+        char c = 'a';
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        char c = 'a';
+        os << c;
+        assert(sb.str() == L"a");
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        char c = 'a';
+        os << c;
+        assert(sb.str() == L"    a");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        std::left(os);
+        char c = 'a';
+        os << c;
+        assert(sb.str() == L"a    ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_to_wide_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_to_wide_pointer.pass.cpp
new file mode 100644
index 0000000..08a66e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/char_to_wide_pointer.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class charT, class traits>
+//   basic_ostream<charT,traits>& operator<<(basic_ostream<charT,traits>& out, const char* s);
+
+// XFAIL: no-wide-characters
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(ch);
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::wostream os((std::wstreambuf*)0);
+        const char* c = "123";
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        const char* c = "123";
+        os << c;
+        assert(sb.str() == L"123");
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        const char* c = "123";
+        os << c;
+        assert(sb.str() == L"  123");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os.width(5);
+        std::left(os);
+        const char* c = "123";
+        os << c;
+        assert(sb.str() == L"123  ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/signed_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/signed_char.pass.cpp
new file mode 100644
index 0000000..6ee9d5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/signed_char.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class char, class traits>
+//   basic_ostream<char,traits>& operator<<(basic_ostream<char,traits>& out, signed char c);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        signed char c = 'a';
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        signed char c = 'a';
+        os << c;
+        assert(sb.str() == "a");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        signed char c = 'a';
+        os << c;
+        assert(sb.str() == "    a");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        std::left(os);
+        signed char c = 'a';
+        os << c;
+        assert(sb.str() == "a    ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/signed_char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/signed_char_pointer.pass.cpp
new file mode 100644
index 0000000..a42afd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/signed_char_pointer.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class traits>
+//   basic_ostream<char,traits>& operator<<(basic_ostream<char,traits>& out, const signed char* s);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        const signed char* c = (const signed char*)"123";
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        const signed char* c = (const signed char*)"123";
+        os << c;
+        assert(sb.str() == "123");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        const signed char* c = (const signed char*)"123";
+        os << c;
+        assert(sb.str() == "  123");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        std::left(os);
+        const signed char* c = (const signed char*)"123";
+        os << c;
+        assert(sb.str() == "123  ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/unsigned_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/unsigned_char.pass.cpp
new file mode 100644
index 0000000..ed6a365
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/unsigned_char.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class char, class traits>
+//   basic_ostream<char,traits>& operator<<(basic_ostream<char,traits>& out, unsigned char c);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        unsigned char c = 'a';
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        unsigned char c = 'a';
+        os << c;
+        assert(sb.str() == "a");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        unsigned char c = 'a';
+        os << c;
+        assert(sb.str() == "    a");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        std::left(os);
+        unsigned char c = 'a';
+        os << c;
+        assert(sb.str() == "a    ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/unsigned_char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/unsigned_char_pointer.pass.cpp
new file mode 100644
index 0000000..4393d5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters.character/unsigned_char_pointer.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template<class traits>
+//   basic_ostream<char,traits>& operator<<(basic_ostream<char,traits>& out, const unsigned char* s);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        const unsigned char* c = (const unsigned char*)"123";
+        os << c;
+        assert(os.bad());
+        assert(os.fail());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        const unsigned char* c = (const unsigned char*)"123";
+        os << c;
+        assert(sb.str() == "123");
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        const unsigned char* c = (const unsigned char*)"123";
+        os << c;
+        assert(sb.str() == "  123");
+        assert(os.width() == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.width(5);
+        std::left(os);
+        const unsigned char* c = (const unsigned char*)"123";
+        os << c;
+        assert(sb.str() == "123  ");
+        assert(os.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/basic_ios.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/basic_ios.pass.cpp
new file mode 100644
index 0000000..8e1e0fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/basic_ios.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& operator<<(basic_ios<charT,traits>&
+//                                         (*pf)(basic_ios<charT,traits>&));
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+template <class CharT>
+std::basic_ios<CharT>&
+f(std::basic_ios<CharT>& os)
+{
+    std::uppercase(os);
+    return os;
+}
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(!(os.flags() & std::ios_base::uppercase));
+        os << f;
+        assert( (os.flags() & std::ios_base::uppercase));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/ios_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/ios_base.pass.cpp
new file mode 100644
index 0000000..de4a17f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/ios_base.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& operator<<(ios_base& (*pf)(ios_base&));
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(!(os.flags() & std::ios_base::uppercase));
+        os << std::uppercase;
+        assert( (os.flags() & std::ios_base::uppercase));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/ostream.pass.cpp
new file mode 100644
index 0000000..299878b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/ostream.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& operator<<
+//           (basic_ostream<charT,traits>& (*pf)(basic_ostream<charT,traits>&))
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+template <class CharT>
+std::basic_ostream<CharT>&
+f(std::basic_ostream<CharT>& os)
+{
+    os << "testing...";
+    return os;
+}
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os << f;
+        assert(sb.str() == "testing...");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/streambuf.pass.cpp
new file mode 100644
index 0000000..e19d040
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.formatted/ostream.inserters/streambuf.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& operator<<(basic_streambuf<charT,traits>* sb);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+    testbuf(const std::basic_string<CharT>& str)
+        : str_(str)
+    {
+        base::setg(const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data()),
+                   const_cast<CharT*>(str_.data() + str_.size()));
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        testbuf<char> sb2("testing...");
+        assert(sb.str() == "");
+        os << &sb2;
+        assert(sb.str() == "testing...");
+    }
+#if TEST_STD_VER > 14
+// LWG 2221 - nullptr. This is not backported to older standards modes.
+// See https://reviews.llvm.org/D127033 for more info on the rationale.
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os << nullptr;
+        assert(sb.str().size() != 0);
+        LIBCPP_ASSERT(sb.str() == "nullptr");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/endl.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/endl.pass.cpp
new file mode 100644
index 0000000..d97dcef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/endl.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template <class charT, class traits>
+//   basic_ostream<charT,traits>& endl(basic_ostream<charT,traits>& os);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+
+    virtual int
+        sync()
+        {
+            ++sync_called;
+            return 0;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::endl(os);
+        assert(sb.str() == "\n");
+        assert(sync_called == 1);
+        assert(os.good());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        std::endl(os);
+        assert(sb.str() == L"\n");
+        assert(sync_called == 2);
+        assert(os.good());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/ends.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/ends.pass.cpp
new file mode 100644
index 0000000..b005c8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/ends.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template <class charT, class traits>
+//   basic_ostream<charT,traits>& ends(basic_ostream<charT,traits>& os);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::ends(os);
+        assert(sb.str().size() == 1);
+        assert(sb.str().back() == 0);
+        assert(os.good());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        std::ends(os);
+        assert(sb.str().size() == 1);
+        assert(sb.str().back() == 0);
+        assert(os.good());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/flush.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/flush.pass.cpp
new file mode 100644
index 0000000..f6b28af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.manip/flush.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// template <class charT, class traits>
+//   basic_ostream<charT,traits>& flush(basic_ostream<charT,traits>& os);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+public:
+    testbuf()
+    {
+    }
+
+protected:
+
+    virtual int
+        sync()
+        {
+            ++sync_called;
+            return 0;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        std::flush(os);
+        assert(sync_called == 1);
+        assert(os.good());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        std::flush(os);
+        assert(sync_called == 2);
+        assert(os.good());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/not_ostreamable.verify.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/not_ostreamable.verify.cpp
new file mode 100644
index 0000000..2a616f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/not_ostreamable.verify.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the rvalue overload of operator<< isn't part of the overload set
+// when the type is not output streamable into a lvalue stream.
+
+#include <ostream>
+#include <utility>
+
+struct Foo { };
+
+using X = decltype(std::declval<std::ostream>() << std::declval<Foo const&>()); // expected-error {{invalid operands to binary expression}}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/rvalue.pass.cpp
new file mode 100644
index 0000000..8ef9b6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/rvalue.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class Stream, class T>
+// Stream&& operator<<(Stream&& os, const T& x);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+struct Int {
+    int value;
+    template <class CharT>
+    friend void operator<<(std::basic_ostream<CharT>& os, Int const& self) {
+        os << self.value;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        Int const i = {123};
+        std::ostream&& result = (std::move(os) << i);
+        assert(&result == &os);
+        assert(sb.str() == "123");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        Int const i = {123};
+        std::wostream&& result = (std::move(os) << i);
+        assert(&result == &os);
+        assert(sb.str() == L"123");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/seekp.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/seekp.pass.cpp
new file mode 100644
index 0000000..fcb6c8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/seekp.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& seekp(pos_type pos);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int seekpos_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    testbuf() {}
+
+protected:
+
+    typename base::pos_type
+    seekpos(typename base::pos_type sp, std::ios_base::openmode which)
+    {
+        ++seekpos_called;
+        assert(which == std::ios_base::out);
+        return sp;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        seekpos_called = 0;
+        std::ostream os((std::streambuf*)0);
+        assert(&os.seekp(5) == &os);
+        assert(seekpos_called == 0);
+    }
+    {
+        seekpos_called = 0;
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(&os.seekp(10) == &os);
+        assert(seekpos_called == 1);
+        assert(os.good());
+        assert(&os.seekp(-1) == &os);
+        assert(seekpos_called == 2);
+        assert(os.fail());
+    }
+    { // See https://llvm.org/PR21361
+        seekpos_called = 0;
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.setstate(std::ios_base::eofbit);
+        assert(&os.seekp(10) == &os);
+        assert(seekpos_called == 1);
+        assert(os.rdstate() == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/seekp2.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/seekp2.pass.cpp
new file mode 100644
index 0000000..7ca60b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/seekp2.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& seekp(off_type off, ios_base::seekdir dir);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int seekoff_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    testbuf() {}
+
+protected:
+
+    typename base::pos_type
+    seekoff(typename base::off_type off, std::ios_base::seekdir way,
+                                         std::ios_base::openmode which)
+    {
+        ++seekoff_called;
+        assert(way == std::ios_base::beg);
+        assert(which == std::ios_base::out);
+        return off;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        seekoff_called = 0;
+        std::ostream os((std::streambuf*)0);
+        assert(&os.seekp(5, std::ios_base::beg) == &os);
+        assert(seekoff_called == 0);
+    }
+    {
+        seekoff_called = 0;
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(&os.seekp(10, std::ios_base::beg) == &os);
+        assert(seekoff_called == 1);
+        assert(os.good());
+        assert(&os.seekp(-1, std::ios_base::beg) == &os);
+        assert(seekoff_called == 2);
+        assert(os.fail());
+    }
+    { // See https://llvm.org/PR21361
+        seekoff_called = 0;
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.setstate(std::ios_base::eofbit);
+        assert(&os.seekp(10, std::ios_base::beg) == &os);
+        assert(seekoff_called == 1);
+        assert(os.rdstate() == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/tellp.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/tellp.pass.cpp
new file mode 100644
index 0000000..5921042
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.seeks/tellp.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// pos_type tellp();
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int seekoff_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    testbuf() {}
+
+protected:
+
+    typename base::pos_type
+    seekoff(typename base::off_type off, std::ios_base::seekdir way, std::ios_base::openmode which)
+    {
+        assert(off == 0);
+        assert(way == std::ios_base::cur);
+        assert(which == std::ios_base::out);
+        ++seekoff_called;
+        return 10;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        assert(os.tellp() == -1);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(os.tellp() == 10);
+        assert(seekoff_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/flush.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/flush.pass.cpp
new file mode 100644
index 0000000..6d91d71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/flush.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream& flush();
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+public:
+    testbuf()
+    {
+    }
+
+protected:
+
+    virtual int
+        sync()
+        {
+            if (sync_called++ == 1)
+                return -1;
+            return 0;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os.flush();
+        assert(os.good());
+        assert(sync_called == 1);
+        os.flush();
+        assert(os.bad());
+        assert(sync_called == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/put.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/put.pass.cpp
new file mode 100644
index 0000000..e52a1a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/put.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream<charT,traits>& put(char_type c);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        char c = 'a';
+        os.put(c);
+        assert(os.bad());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        char c = 'a';
+        os.put(c);
+        assert(sb.str() == "a");
+        assert(os.good());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostream os((std::wstreambuf*)0);
+        wchar_t c = L'a';
+        os.put(c);
+        assert(os.bad());
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        wchar_t c = L'a';
+        os.put(c);
+        assert(sb.str() == L"a");
+        assert(os.good());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/write.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/write.pass.cpp
new file mode 100644
index 0000000..b0f3889
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream.unformatted/write.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+//   class basic_ostream;
+
+// basic_ostream& write(const char_type* s, streamsize n);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+class testbuf
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    std::basic_string<CharT> str_;
+public:
+    testbuf()
+    {
+    }
+
+    std::basic_string<CharT> str() const
+        {return std::basic_string<CharT>(base::pbase(), base::pptr());}
+
+protected:
+
+    virtual typename base::int_type
+        overflow(typename base::int_type ch = base::traits_type::eof())
+        {
+            if (ch != base::traits_type::eof())
+            {
+                int n = static_cast<int>(str_.size());
+                str_.push_back(static_cast<CharT>(ch));
+                str_.resize(str_.capacity());
+                base::setp(const_cast<CharT*>(str_.data()),
+                           const_cast<CharT*>(str_.data() + str_.size()));
+                base::pbump(n+1);
+            }
+            return ch;
+        }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        const char s[] = "123456790";
+        os.write(s, sizeof(s)/sizeof(s[0])-1);
+        assert(os.bad());
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        const char s[] = "123456790";
+        os.write(s, sizeof(s)/sizeof(s[0])-1);
+        assert(sb.str() == s);
+        assert(os.good());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostream os((std::wstreambuf*)0);
+        const wchar_t s[] = L"123456790";
+        os.write(s, sizeof(s)/sizeof(s[0])-1);
+        assert(os.bad());
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        const wchar_t s[] = L"123456790";
+        os.write(s, sizeof(s)/sizeof(s[0])-1);
+        assert(os.good());
+        assert(sb.str() == s);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream/deleted_output_functions.verify.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream/deleted_output_functions.verify.cpp
new file mode 100644
index 0000000..d8d2a94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream/deleted_output_functions.verify.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ostream>
+
+#include <ostream>
+#include <sstream>
+#include <utility>
+
+#include "test_macros.h"
+
+void f() {
+  std::ostringstream s;
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+
+  s << wchar_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<wchar_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<const wchar_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+
+  std::wostringstream sw;
+#  ifndef TEST_HAS_NO_CHAR8_T
+  sw << char8_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << std::declval<char8_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << std::declval<const char8_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+#  endif
+
+  sw << char16_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << std::declval<char16_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << std::declval<const char16_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << char32_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << std::declval<char32_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  sw << std::declval<const char32_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+#ifndef TEST_HAS_NO_CHAR8_T
+  s << char8_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<char8_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<const char8_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+#endif
+  s << char16_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<char16_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<const char16_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << char32_t();                      // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<char32_t*>();       // expected-error {{overload resolution selected deleted operator '<<'}}
+  s << std::declval<const char32_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream/types.pass.cpp
new file mode 100644
index 0000000..8a4a5f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream/types.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream
+//     : virtual public basic_ios<charT,traits>
+// {
+// public:
+//     // types (inherited from basic_ios (27.5.4)):
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <ostream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_ios<char>, std::basic_ostream<char> >::value), "");
+    static_assert((std::is_same<std::basic_ostream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_ostream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_ostream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_ostream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_ostream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream_sentry/construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream_sentry/construct.pass.cpp
new file mode 100644
index 0000000..c865db7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream_sentry/construct.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream::sentry;
+
+// explicit sentry(basic_ostream<charT,traits>& os);
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+struct testbuf1
+    : public std::basic_streambuf<CharT>
+{
+    testbuf1() {}
+
+protected:
+
+    int virtual sync()
+    {
+        ++sync_called;
+        return 1;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        std::ostream::sentry s(os);
+        assert(!bool(s));
+    }
+    {
+        testbuf1<char> sb;
+        std::ostream os(&sb);
+        std::ostream::sentry s(os);
+        assert(bool(s));
+    }
+    {
+        testbuf1<char> sb;
+        std::ostream os(&sb);
+        testbuf1<char> sb2;
+        std::ostream os2(&sb2);
+        os.tie(&os2);
+        assert(sync_called == 0);
+        std::ostream::sentry s(os);
+        assert(bool(s));
+        assert(sync_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream_sentry/destruct.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream_sentry/destruct.pass.cpp
new file mode 100644
index 0000000..ad527ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/output.streams/ostream_sentry/destruct.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream::sentry;
+
+// ~sentry();
+
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int sync_called = 0;
+
+template <class CharT>
+struct testbuf1
+    : public std::basic_streambuf<CharT>
+{
+    testbuf1() {}
+
+protected:
+
+    int virtual sync()
+    {
+        ++sync_called;
+        return 1;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        std::ostream os((std::streambuf*)0);
+        std::ostream::sentry s(os);
+        assert(!bool(s));
+    }
+    assert(sync_called == 0);
+    {
+        testbuf1<char> sb;
+        std::ostream os(&sb);
+        std::ostream::sentry s(os);
+        assert(bool(s));
+    }
+    assert(sync_called == 0);
+    {
+        testbuf1<char> sb;
+        std::ostream os(&sb);
+        std::ostream::sentry s(os);
+        assert(bool(s));
+        std::unitbuf(os);
+    }
+    assert(sync_called == 1);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        testbuf1<char> sb;
+        std::ostream os(&sb);
+        try
+        {
+            std::ostream::sentry s(os);
+            assert(bool(s));
+            std::unitbuf(os);
+            throw 1;
+        }
+        catch (...)
+        {
+        }
+        assert(sync_called == 1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted.pass.cpp
new file mode 100644
index 0000000..ef43339
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <iomanip>
+
+// quoted
+
+#include <iomanip>
+#include <sstream>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, class Traits>
+bool is_skipws ( const std::basic_istream<CharT, Traits>& is ) {
+    return ( is.flags() & std::ios_base::skipws ) != 0;
+}
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+void both_ways ( const CharT *p ) {
+    std::basic_string<CharT, Traits> str(p);
+    auto q = std::quoted(str);
+
+    std::basic_stringstream<CharT, Traits> ss;
+    bool skippingws = is_skipws ( ss );
+    ((void)skippingws); // Prevent unused warning
+    ss << q;
+    ss >> q;
+}
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+void round_trip ( const CharT *p ) {
+    std::basic_stringstream<CharT, Traits> ss;
+    bool skippingws = is_skipws ( ss );
+
+    ss << std::quoted(p);
+    std::basic_string<CharT, Traits> s;
+    ss >> std::quoted(s);
+    assert ( s == p );
+    assert ( skippingws == is_skipws ( ss ));
+}
+
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+void round_trip_ws ( const CharT *p ) {
+    std::basic_stringstream<CharT, Traits> ss;
+    std::noskipws ( ss );
+    bool skippingws = is_skipws ( ss );
+
+    ss << std::quoted(p);
+    std::basic_string<CharT, Traits> s;
+    ss >> std::quoted(s);
+    assert ( s == p );
+    assert ( skippingws == is_skipws ( ss ));
+}
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+void round_trip_d ( const CharT *p, char delim ) {
+    std::basic_stringstream<CharT, Traits> ss;
+    CharT d(delim);
+
+    ss << std::quoted(p, d);
+    std::basic_string<CharT, Traits> s;
+    ss >> std::quoted(s, d);
+    assert ( s == p );
+}
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+void round_trip_e ( const CharT *p, char escape ) {
+    std::basic_stringstream<CharT, Traits> ss;
+    CharT e(escape);
+
+    ss << std::quoted(p, CharT('"'), e );
+    std::basic_string<CharT, Traits> s;
+    ss >> std::quoted(s, CharT('"'), e );
+    assert ( s == p );
+}
+
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+std::basic_string<CharT, Traits> quote ( const CharT *p, char delim='"', char escape='\\' ) {
+    std::basic_stringstream<CharT, Traits> ss;
+    CharT d(delim);
+    CharT e(escape);
+    ss << std::quoted(p, d, e);
+    std::basic_string<CharT, Traits> s;
+    ss >> s;    // no quote
+    return s;
+}
+
+template <class CharT, class Traits = std::char_traits<CharT>>
+std::basic_string<CharT, Traits> unquote ( const CharT *p, char delim='"', char escape='\\' ) {
+    std::basic_stringstream<CharT, Traits> ss;
+    ss << p;
+
+    CharT d(delim);
+    CharT e(escape);
+    std::basic_string<CharT, Traits> s;
+    ss >> std::quoted(s, d, e);
+    return s;
+}
+
+void test_padding () {
+    {
+    std::stringstream ss;
+    ss << std::left << std::setw(10) << std::setfill('!') << std::quoted("abc", '`');
+    assert ( ss.str() == "`abc`!!!!!" );
+    }
+
+    {
+    std::stringstream ss;
+    ss << std::right << std::setw(10) << std::setfill('!') << std::quoted("abc", '`');
+    assert ( ss.str() == "!!!!!`abc`" );
+    }
+}
+
+
+int main(int, char**)
+{
+    both_ways ( "" );   // This is a compilation check
+
+    round_trip    (  "" );
+    round_trip_ws (  "" );
+    round_trip_d  (  "", 'q' );
+    round_trip_e  (  "", 'q' );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    round_trip    ( L"" );
+    round_trip_ws ( L"" );
+    round_trip_d  ( L"", 'q' );
+    round_trip_e  ( L"", 'q' );
+#endif
+
+    round_trip    (  "Hi" );
+    round_trip_ws (  "Hi" );
+    round_trip_d  (  "Hi", '!' );
+    round_trip_e  (  "Hi", '!' );
+    assert ( quote ( "Hi", '!' ) == "!Hi!" );
+    assert ( quote ( "Hi!", '!' ) == R"(!Hi\!!)" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    round_trip    ( L"Hi" );
+    round_trip_ws ( L"Hi" );
+    round_trip_d  ( L"Hi", '!' );
+    round_trip_e  ( L"Hi", '!' );
+    assert ( quote ( L"Hi", '!' )  == L"!Hi!" );
+    assert ( quote ( L"Hi!", '!' ) == LR"(!Hi\!!)" );
+#endif
+
+    round_trip    (  "Hi Mom" );
+    round_trip_ws (  "Hi Mom" );
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    round_trip    ( L"Hi Mom" );
+    round_trip_ws ( L"Hi Mom" );
+#endif
+
+    assert ( quote (  "" )  ==  "\"\"" );
+    assert ( quote (  "a" ) ==  "\"a\"" );
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( quote ( L"" )  == L"\"\"" );
+    assert ( quote ( L"a" ) == L"\"a\"" );
+#endif
+
+    // missing end quote - must not hang
+    assert ( unquote (  "\"abc" ) ==  "abc" );
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( unquote ( L"\"abc" ) == L"abc" );
+#endif
+
+    assert ( unquote (  "abc" ) == "abc" ); // no delimiter
+    assert ( unquote (  "abc def" ) ==  "abc" ); // no delimiter
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( unquote ( L"abc" ) == L"abc" ); // no delimiter
+    assert ( unquote ( L"abc def" ) == L"abc" ); // no delimiter
+#endif
+
+    assert ( unquote (  "" ) ==  "" ); // nothing there
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( unquote ( L"" ) == L"" ); // nothing there
+#endif
+
+    test_padding ();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_char.verify.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_char.verify.cpp
new file mode 100644
index 0000000..4d96351
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_char.verify.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// quoted
+
+// UNSUPPORTED: c++03, c++11
+// XFAIL: no-wide-characters
+
+#include <iomanip>
+#include <sstream>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+//  Test that mismatches between strings and wide streams are diagnosed
+
+void round_trip ( const char *p ) {
+    std::wstringstream ss;
+    ss << std::quoted(p); // expected-error {{invalid operands to binary expression}}
+    std::string s;
+    ss >> std::quoted(s); // expected-error {{invalid operands to binary expression}}
+}
+
+int main(int, char**) {
+    round_trip("Hi Mom");
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp
new file mode 100644
index 0000000..35aa54b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_traits.compile.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <iomanip>
+
+// std::quoted
+//   Verify that the result type of std::quoted can be streamed to
+//   (and from) ostreams with the correct CharTraits, and not those
+//   with the wrong CharTraits. To avoid our having to create working
+//   ostreams with weird CharTraits, this is a compile-only test.
+
+#include <iomanip>
+#include <istream>
+#include <ostream>
+#include <string>
+#include <string_view>
+#include <type_traits>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+
+template<class IS, class Q>
+decltype(std::declval<IS>() >> std::declval<Q>(), std::true_type())
+has_rightshift_impl(int) { return std::true_type(); }
+
+template<class IS, class Q>
+std::false_type
+has_rightshift_impl(long) { return std::false_type(); }
+
+template<class IS, class Q>
+struct HasRightShift : decltype(has_rightshift_impl<IS, Q>(0)) {};
+
+template<class OS, class Q>
+decltype(std::declval<OS>() << std::declval<Q>(), std::true_type())
+has_leftshift_impl(int) { return std::true_type(); }
+
+template<class OS, class Q>
+std::false_type
+has_leftshift_impl(long) { return std::false_type(); }
+
+template<class OS, class Q>
+struct HasLeftShift : decltype(has_leftshift_impl<OS, Q>(0)) {};
+
+template<class CharT>
+struct FakeCharTraits : std::char_traits<CharT> {};
+
+void test_string_literal()
+{
+  using Q = decltype(std::quoted("hello"));
+  static_assert( HasLeftShift<std::ostream&, Q>::value, "");
+  static_assert(!HasRightShift<std::istream&, Q>::value, "");
+  static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, Q>::value, "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  using WQ = decltype(std::quoted(L"hello"));
+  static_assert( HasLeftShift<std::wostream&, WQ>::value, "");
+  static_assert(!HasRightShift<std::wistream&, WQ>::value, "");
+  static_assert( HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+
+  static_assert(!HasLeftShift<std::ostream&, WQ>::value, "");
+  static_assert(!HasLeftShift<std::wostream&, Q>::value, "");
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+}
+
+void test_std_string()
+{
+  std::string s = "hello";
+  const auto& cs = s;
+  using Q = decltype(std::quoted(s));
+  using CQ = decltype(std::quoted(cs));
+  static_assert( HasLeftShift<std::ostream&, Q>::value, "");
+  static_assert( HasRightShift<std::istream&, Q>::value, "");
+  static_assert( HasLeftShift<std::ostream&, CQ>::value, "");
+  static_assert(!HasRightShift<std::istream&, CQ>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, Q>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQ>::value, "");
+
+  std::basic_string<char, FakeCharTraits<char>, test_allocator<char>> st = "hello";
+  const auto& cst = st;
+  using QT = decltype(std::quoted(st));
+  using CQT = decltype(std::quoted(cst));
+  static_assert(!HasLeftShift<std::ostream&, QT>::value, "");
+  static_assert(!HasRightShift<std::istream&, QT>::value, "");
+  static_assert(!HasLeftShift<std::ostream&, CQT>::value, "");
+  static_assert(!HasRightShift<std::istream&, CQT>::value, "");
+  static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, QT>::value, "");
+  static_assert( HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, QT>::value, "");
+  static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQT>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQT>::value, "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::wstring ws = L"hello";
+  const auto& cws = ws;
+  using WQ = decltype(std::quoted(ws));
+  using CWQ = decltype(std::quoted(cws));
+  static_assert( HasLeftShift<std::wostream&, WQ>::value, "");
+  static_assert( HasRightShift<std::wistream&, WQ>::value, "");
+  static_assert( HasLeftShift<std::wostream&, CWQ>::value, "");
+  static_assert(!HasRightShift<std::wistream&, CWQ>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, CWQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, CWQ>::value, "");
+
+  static_assert(!HasLeftShift<std::ostream&, WQ>::value, "");
+  static_assert(!HasLeftShift<std::wostream&, Q>::value, "");
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+}
+
+void test_std_string_view()
+{
+  std::string_view s = "hello";
+  const auto& cs = s;
+  using Q = decltype(std::quoted(s));
+  using CQ = decltype(std::quoted(cs));
+  static_assert( HasLeftShift<std::ostream&, Q>::value, "");
+  static_assert(!HasRightShift<std::istream&, Q>::value, "");
+  static_assert( HasLeftShift<std::ostream&, CQ>::value, "");
+  static_assert(!HasRightShift<std::istream&, CQ>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, Q>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, Q>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQ>::value, "");
+
+  std::basic_string_view<char, FakeCharTraits<char>> st = "hello";
+  const auto& cst = st;
+  using QT = decltype(std::quoted(st));
+  using CQT = decltype(std::quoted(cst));
+  static_assert(!HasLeftShift<std::ostream&, QT>::value, "");
+  static_assert(!HasRightShift<std::istream&, QT>::value, "");
+  static_assert(!HasLeftShift<std::ostream&, CQT>::value, "");
+  static_assert(!HasRightShift<std::istream&, CQT>::value, "");
+  static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, QT>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, QT>::value, "");
+  static_assert( HasLeftShift<std::basic_ostream<char, FakeCharTraits<char>>&, CQT>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<char, FakeCharTraits<char>>&, CQT>::value, "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::wstring_view ws = L"hello";
+  const auto& cws = ws;
+  using WQ = decltype(std::quoted(ws));
+  using CWQ = decltype(std::quoted(cws));
+  static_assert( HasLeftShift<std::wostream&, WQ>::value, "");
+  static_assert(!HasRightShift<std::wistream&, WQ>::value, "");
+  static_assert( HasLeftShift<std::wostream&, CWQ>::value, "");
+  static_assert(!HasRightShift<std::wistream&, CWQ>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, WQ>::value, "");
+  static_assert(!HasLeftShift<std::basic_ostream<wchar_t, FakeCharTraits<wchar_t>>&, CWQ>::value, "");
+  static_assert(!HasRightShift<std::basic_istream<wchar_t, FakeCharTraits<wchar_t>>&, CWQ>::value, "");
+
+  static_assert(!HasLeftShift<std::ostream&, WQ>::value, "");
+  static_assert(!HasLeftShift<std::wostream&, Q>::value, "");
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_traits.verify.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_traits.verify.cpp
new file mode 100644
index 0000000..5a92485
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/quoted.manip/quoted_traits.verify.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// quoted
+
+// UNSUPPORTED: c++03, c++11
+
+#include <iomanip>
+#include <sstream>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+//  Test that mismatches in the traits between the quoted object and the dest string are diagnosed.
+
+template <class charT>
+struct test_traits {
+    typedef charT char_type;
+};
+
+void round_trip ( const char *p ) {
+    std::stringstream ss;
+    ss << std::quoted(p);
+    std::basic_string<char, test_traits<char>> s;
+    ss >> std::quoted(s); // expected-error {{invalid operands to binary expression}}
+}
+
+int main(int, char**) {
+    round_trip("Hi Mom");
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/resetiosflags.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/resetiosflags.pass.cpp
new file mode 100644
index 0000000..a61357e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/resetiosflags.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// T1 resetiosflags(ios_base::fmtflags mask);
+
+#include <iomanip>
+#include <istream>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::istream is(&sb);
+        assert(is.flags() & std::ios_base::skipws);
+        is >> std::resetiosflags(std::ios_base::skipws);
+        assert(!(is.flags() & std::ios_base::skipws));
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(os.flags() & std::ios_base::skipws);
+        os << std::resetiosflags(std::ios_base::skipws);
+        assert(!(os.flags() & std::ios_base::skipws));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        assert(is.flags() & std::ios_base::skipws);
+        is >> std::resetiosflags(std::ios_base::skipws);
+        assert(!(is.flags() & std::ios_base::skipws));
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        assert(os.flags() & std::ios_base::skipws);
+        os << std::resetiosflags(std::ios_base::skipws);
+        assert(!(os.flags() & std::ios_base::skipws));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setbase.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setbase.pass.cpp
new file mode 100644
index 0000000..0e8b13c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setbase.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// T3 setbase(int base);
+
+#include <iomanip>
+#include <istream>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::istream is(&sb);
+        is >> std::setbase(8);
+        assert((is.flags() & std::ios_base::basefield) == std::ios_base::oct);
+        is >> std::setbase(10);
+        assert((is.flags() & std::ios_base::basefield) == std::ios_base::dec);
+        is >> std::setbase(16);
+        assert((is.flags() & std::ios_base::basefield) == std::ios_base::hex);
+        is >> std::setbase(15);
+        assert((is.flags() & std::ios_base::basefield) == 0);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os << std::setbase(8);
+        assert((os.flags() & std::ios_base::basefield) == std::ios_base::oct);
+        os << std::setbase(10);
+        assert((os.flags() & std::ios_base::basefield) == std::ios_base::dec);
+        os << std::setbase(16);
+        assert((os.flags() & std::ios_base::basefield) == std::ios_base::hex);
+        os << std::setbase(15);
+        assert((os.flags() & std::ios_base::basefield) == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        is >> std::setbase(8);
+        assert((is.flags() & std::ios_base::basefield) == std::ios_base::oct);
+        is >> std::setbase(10);
+        assert((is.flags() & std::ios_base::basefield) == std::ios_base::dec);
+        is >> std::setbase(16);
+        assert((is.flags() & std::ios_base::basefield) == std::ios_base::hex);
+        is >> std::setbase(15);
+        assert((is.flags() & std::ios_base::basefield) == 0);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os << std::setbase(8);
+        assert((os.flags() & std::ios_base::basefield) == std::ios_base::oct);
+        os << std::setbase(10);
+        assert((os.flags() & std::ios_base::basefield) == std::ios_base::dec);
+        os << std::setbase(16);
+        assert((os.flags() & std::ios_base::basefield) == std::ios_base::hex);
+        os << std::setbase(15);
+        assert((os.flags() & std::ios_base::basefield) == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setfill.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setfill.pass.cpp
new file mode 100644
index 0000000..3413743
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setfill.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// template<charT> T4 setfill(charT c);
+
+#include <iomanip>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os << std::setfill('*');
+        assert(os.fill() == '*');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os << std::setfill(L'*');
+        assert(os.fill() == L'*');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setiosflags.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setiosflags.pass.cpp
new file mode 100644
index 0000000..9ed8b9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setiosflags.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// T2 setiosflags (ios_base::fmtflags mask);
+
+#include <iomanip>
+#include <istream>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::istream is(&sb);
+        assert(!(is.flags() & std::ios_base::oct));
+        is >> std::setiosflags(std::ios_base::oct);
+        assert(is.flags() & std::ios_base::oct);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        assert(!(os.flags() & std::ios_base::oct));
+        os << std::setiosflags(std::ios_base::oct);
+        assert(os.flags() & std::ios_base::oct);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        assert(!(is.flags() & std::ios_base::oct));
+        is >> std::setiosflags(std::ios_base::oct);
+        assert(is.flags() & std::ios_base::oct);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        assert(!(os.flags() & std::ios_base::oct));
+        os << std::setiosflags(std::ios_base::oct);
+        assert(os.flags() & std::ios_base::oct);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setprecision.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setprecision.pass.cpp
new file mode 100644
index 0000000..0fa289b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setprecision.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// T5 setprecision(int n);
+
+#include <iomanip>
+#include <istream>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::istream is(&sb);
+        is >> std::setprecision(10);
+        assert(is.precision() == 10);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os << std::setprecision(10);
+        assert(os.precision() == 10);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        is >> std::setprecision(10);
+        assert(is.precision() == 10);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os << std::setprecision(10);
+        assert(os.precision() == 10);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setw.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setw.pass.cpp
new file mode 100644
index 0000000..565dadd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.format/std.manip/setw.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iomanip>
+
+// <unspecified> setw(int n);
+
+#include <iomanip>
+#include <istream>
+#include <ostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb;
+        std::istream is(&sb);
+        is >> std::setw(10);
+        assert(is.width() == 10);
+    }
+    {
+        testbuf<char> sb;
+        std::ostream os(&sb);
+        os << std::setw(10);
+        assert(os.width() == 10);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb;
+        std::wistream is(&sb);
+        is >> std::setw(10);
+        assert(is.width() == 10);
+    }
+    {
+        testbuf<wchar_t> sb;
+        std::wostream os(&sb);
+        os << std::setw(10);
+        assert(os.width() == 10);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp
new file mode 100644
index 0000000..1a28a59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iosfwd>
+
+#include <iosfwd>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   include <cwchar>
+#endif
+
+template <class Ptr> void test()
+{
+    Ptr p = 0;
+    ((void)p); // Prevent unused warning
+}
+
+int main(int, char**)
+{
+    test<std::char_traits<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::char_traits<wchar_t>*       >();
+#endif
+
+    test<std::basic_ios<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_ios<wchar_t>*       >();
+#endif
+    test<std::basic_ios<unsigned short>*>();
+
+    test<std::basic_streambuf<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_streambuf<wchar_t>*       >();
+#endif
+    test<std::basic_streambuf<unsigned short>*>();
+
+    test<std::basic_istream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_istream<wchar_t>*       >();
+#endif
+    test<std::basic_istream<unsigned short>*>();
+
+    test<std::basic_ostream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_ostream<wchar_t>*       >();
+#endif
+    test<std::basic_ostream<unsigned short>*>();
+
+    test<std::basic_iostream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_iostream<wchar_t>*       >();
+#endif
+    test<std::basic_iostream<unsigned short>*>();
+
+    test<std::basic_stringbuf<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_stringbuf<wchar_t>*       >();
+#endif
+    test<std::basic_stringbuf<unsigned short>*>();
+
+    test<std::basic_istringstream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_istringstream<wchar_t>*       >();
+#endif
+    test<std::basic_istringstream<unsigned short>*>();
+
+    test<std::basic_ostringstream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_ostringstream<wchar_t>*       >();
+#endif
+    test<std::basic_ostringstream<unsigned short>*>();
+
+    test<std::basic_stringstream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_stringstream<wchar_t>*       >();
+#endif
+    test<std::basic_stringstream<unsigned short>*>();
+
+    test<std::basic_filebuf<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_filebuf<wchar_t>*       >();
+#endif
+    test<std::basic_filebuf<unsigned short>*>();
+
+    test<std::basic_ifstream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_ifstream<wchar_t>*       >();
+#endif
+    test<std::basic_ifstream<unsigned short>*>();
+
+    test<std::basic_ofstream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_ofstream<wchar_t>*       >();
+#endif
+    test<std::basic_ofstream<unsigned short>*>();
+
+    test<std::basic_fstream<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::basic_fstream<wchar_t>*       >();
+#endif
+    test<std::basic_fstream<unsigned short>*>();
+
+    test<std::istreambuf_iterator<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::istreambuf_iterator<wchar_t>*       >();
+#endif
+    test<std::istreambuf_iterator<unsigned short>*>();
+
+    test<std::ostreambuf_iterator<char>*          >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::ostreambuf_iterator<wchar_t>*       >();
+#endif
+    test<std::ostreambuf_iterator<unsigned short>*>();
+
+    test<std::ios* >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wios*>();
+#endif
+
+    test<std::streambuf*>();
+    test<std::istream*  >();
+    test<std::ostream*  >();
+    test<std::iostream* >();
+
+    test<std::stringbuf*    >();
+    test<std::istringstream*>();
+    test<std::ostringstream*>();
+    test<std::stringstream* >();
+
+    test<std::filebuf* >();
+    test<std::ifstream*>();
+    test<std::ofstream*>();
+    test<std::fstream* >();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstreambuf*>();
+    test<std::wistream*  >();
+    test<std::wostream*  >();
+    test<std::wiostream* >();
+
+    test<std::wstringbuf*    >();
+    test<std::wistringstream*>();
+    test<std::wostringstream*>();
+    test<std::wstringstream* >();
+
+    test<std::wfilebuf* >();
+    test<std::wifstream*>();
+    test<std::wofstream*>();
+    test<std::wfstream* >();
+#endif
+
+    test<std::fpos<std::mbstate_t>*>();
+    test<std::streampos*           >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstreampos*          >();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.forward/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/iostream.forward/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.forward/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/check-stderr.sh b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/check-stderr.sh
new file mode 100644
index 0000000..bc800aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/check-stderr.sh
@@ -0,0 +1,4 @@
+program=${1}
+expected_stderr=${2}
+${program} 2>stderr.log >stdout.log
+[ "${expected_stderr}" == "$(cat stderr.log)" ]
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/check-stdout.sh b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/check-stdout.sh
new file mode 100644
index 0000000..e86f8cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/check-stdout.sh
@@ -0,0 +1,4 @@
+program=${1}
+expected_stdout=${2}
+${program} 2>stderr.log >stdout.log
+[ "${expected_stdout}" == "$(cat stdout.log)" ]
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/init.pass.cpp
new file mode 100644
index 0000000..293d105
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/init.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that the iostreams are initialized before everything else.
+// This has been an issue when statically linking libc++ in some contexts.
+// See https://llvm.org/PR28954 for details.
+//
+// This test works by checking that std::{cin,cout,cerr} is the same in a
+// static object constructor and in the main function. It dumps the memory of
+// each stream in the static object constructor and compares it with the memory
+// in the main function.
+//
+// The assumption is that if there are no uses of the stream object (such as
+// construction), then its memory must be the same. In the case where the test
+// "fails" and we are actually accessing an uninitialized object when we perform
+// the memcpy, the behavior is technically undefined (so the test could still
+// pass).
+
+#include <cassert>
+#include <cstring>
+#include <iostream>
+
+#include "test_macros.h"
+
+struct Checker {
+    char *cerr_mem_dump;
+    char *cin_mem_dump;
+    char *cout_mem_dump;
+    char *clog_mem_dump;
+
+    Checker()
+        : cerr_mem_dump(new char[sizeof(std::cerr)])
+        , cin_mem_dump(new char[sizeof(std::cin)])
+        , cout_mem_dump(new char[sizeof(std::cout)])
+        , clog_mem_dump(new char[sizeof(std::clog)])
+     {
+        std::memcpy(cerr_mem_dump, (char*)&std::cerr, sizeof(std::cerr));
+        std::memcpy(cin_mem_dump, (char*)&std::cin, sizeof(std::cin));
+        std::memcpy(cout_mem_dump, (char*)&std::cout, sizeof(std::cout));
+        std::memcpy(clog_mem_dump, (char*)&std::clog, sizeof(std::clog));
+    }
+
+    ~Checker() {
+        delete[] cerr_mem_dump;
+        delete[] cin_mem_dump;
+        delete[] cout_mem_dump;
+        delete[] clog_mem_dump;
+    }
+};
+static Checker check;
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+struct WideChecker {
+    char *wcerr_mem_dump;
+    char *wcin_mem_dump;
+    char *wcout_mem_dump;
+    char *wclog_mem_dump;
+
+    WideChecker()
+        : wcerr_mem_dump(new char[sizeof(std::wcerr)])
+        , wcin_mem_dump(new char[sizeof(std::wcin)])
+        , wcout_mem_dump(new char[sizeof(std::wcout)])
+        , wclog_mem_dump(new char[sizeof(std::wclog)])
+     {
+        std::memcpy(wcerr_mem_dump, (char*)&std::wcerr, sizeof(std::wcerr));
+        std::memcpy(wcin_mem_dump, (char*)&std::wcin, sizeof(std::wcin));
+        std::memcpy(wcout_mem_dump, (char*)&std::wcout, sizeof(std::wcout));
+        std::memcpy(wclog_mem_dump, (char*)&std::wclog, sizeof(std::wclog));
+    }
+
+    ~WideChecker() {
+        delete[] wcerr_mem_dump;
+        delete[] wcin_mem_dump;
+        delete[] wcout_mem_dump;
+        delete[] wclog_mem_dump;
+    }
+};
+
+static WideChecker wide_check;
+#endif
+
+int main(int, char**) {
+    assert(std::memcmp(check.cerr_mem_dump, (char const*)&std::cerr, sizeof(std::cerr)) == 0);
+    assert(std::memcmp(check.cin_mem_dump, (char const*)&std::cin, sizeof(std::cin)) == 0);
+    assert(std::memcmp(check.cout_mem_dump, (char const*)&std::cout, sizeof(std::cout)) == 0);
+    assert(std::memcmp(check.clog_mem_dump, (char const*)&std::clog, sizeof(std::clog)) == 0);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::memcmp(wide_check.wcerr_mem_dump, (char const*)&std::wcerr, sizeof(std::wcerr)) == 0);
+    assert(std::memcmp(wide_check.wcin_mem_dump, (char const*)&std::wcin, sizeof(std::wcin)) == 0);
+    assert(std::memcmp(wide_check.wcout_mem_dump, (char const*)&std::wcout, sizeof(std::wcout)) == 0);
+    assert(std::memcmp(wide_check.wclog_mem_dump, (char const*)&std::wclog, sizeof(std::wclog)) == 0);
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cerr.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cerr.sh.cpp
new file mode 100644
index 0000000..d86d4f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cerr.sh.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream cerr;
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../check-stderr.sh
+// RUN: %{build}
+// RUN: %{exec} bash check-stderr.sh "%t.exe" "1234"
+
+#include <iostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::cerr << "1234";
+    assert(std::cerr.flags() & std::ios_base::unitbuf);
+    assert(std::cerr.tie() == &std::cout);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cin.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cin.sh.cpp
new file mode 100644
index 0000000..c394c1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cin.sh.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream cin;
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../send-stdin.sh
+// RUN: %{build}
+// RUN: %{exec} bash send-stdin.sh "%t.exe" "1234"
+
+#include <iostream>
+#include <cassert>
+
+int main(int, char**) {
+    int i;
+    std::cin >> i;
+    assert(i == 1234);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/clog.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/clog.sh.cpp
new file mode 100644
index 0000000..f1f52d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/clog.sh.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream clog;
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../check-stderr.sh
+// RUN: %{build}
+// RUN: %{exec} bash check-stderr.sh "%t.exe" "1234"
+
+#include <iostream>
+
+int main(int, char**) {
+    std::clog << "1234";
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cout.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cout.sh.cpp
new file mode 100644
index 0000000..e5efa30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/narrow.stream.objects/cout.sh.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream cout;
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../check-stdout.sh
+// RUN: %{build}
+// RUN: %{exec} bash check-stdout.sh "%t.exe" "1234"
+
+#include <iostream>
+
+int main(int, char**) {
+    std::cout << "1234";
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/send-stdin.sh b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/send-stdin.sh
new file mode 100644
index 0000000..2f93f2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/send-stdin.sh
@@ -0,0 +1,3 @@
+program=${1}
+input=${2}
+echo -n ${input} | ${program}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcerr.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcerr.sh.cpp
new file mode 100644
index 0000000..f67aefc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcerr.sh.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream wcerr;
+
+// XFAIL: no-wide-characters
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../check-stderr.sh
+// RUN: %{build}
+// RUN: %{exec} bash check-stderr.sh "%t.exe" "1234"
+
+#include <iostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    std::wcerr << L"1234";
+    assert(std::wcerr.flags() & std::ios_base::unitbuf);
+    assert(std::wcerr.tie() == &std::wcout);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcin.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcin.sh.cpp
new file mode 100644
index 0000000..bc15a3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcin.sh.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream wcin;
+
+// XFAIL: no-wide-characters
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../send-stdin.sh
+// RUN: %{build}
+// RUN: %{exec} bash send-stdin.sh "%t.exe" "1234"
+
+#include <iostream>
+#include <cassert>
+
+int main(int, char**) {
+    int i;
+    std::wcin >> i;
+    assert(i == 1234);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wclog.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wclog.sh.cpp
new file mode 100644
index 0000000..e279954
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wclog.sh.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream wclog;
+
+// XFAIL: no-wide-characters
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../check-stderr.sh
+// RUN: %{build}
+// RUN: %{exec} bash check-stderr.sh "%t.exe" "1234"
+
+#include <iostream>
+
+int main(int, char**) {
+    std::wclog << L"1234";
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcout.sh.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcout.sh.cpp
new file mode 100644
index 0000000..3276041
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostream.objects/wide.stream.objects/wcout.sh.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iostream>
+
+// istream wcout;
+
+// XFAIL: no-wide-characters
+
+// UNSUPPORTED: executor-has-no-bash
+// FILE_DEPENDENCIES: ../check-stdout.sh
+// RUN: %{build}
+// RUN: %{exec} bash check-stdout.sh "%t.exe" "1234"
+
+#include <iostream>
+
+int main(int, char**) {
+    std::wcout << L"1234";
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.members/state.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.members/state.pass.cpp
new file mode 100644
index 0000000..a793fec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.members/state.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// void state(stateT s);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::fpos<int> f;
+    f.state(3);
+    assert(f.state() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/addition.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/addition.pass.cpp
new file mode 100644
index 0000000..1a3adac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/addition.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// Addition
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::fpos<std::mbstate_t> P;
+    P p(5);
+    std::streamoff o(6);
+    P q = p + o;
+    assert(q == P(11));
+    p += o;
+    assert(p == q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/ctor_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/ctor_int.pass.cpp
new file mode 100644
index 0000000..6e8026b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/ctor_int.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// fpos(int)
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::fpos<std::mbstate_t> P;
+    P p(5);
+    assert(p == P(5));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/difference.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/difference.pass.cpp
new file mode 100644
index 0000000..0731134
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/difference.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// Subtraction with fpos
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::fpos<std::mbstate_t> P;
+    P p(11);
+    P q(6);
+    std::streamoff o = p - q;
+    assert(o == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/eq_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/eq_int.pass.cpp
new file mode 100644
index 0000000..c649f6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/eq_int.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// == and !=
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::fpos<std::mbstate_t> P;
+    P p(5);
+    P q(6);
+    assert(p == p);
+    assert(p != q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/fpos.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/fpos.pass.cpp
new file mode 100644
index 0000000..c3d3e0c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/fpos.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class stateT>
+// class fpos;
+
+#include <cassert>
+#include <ios>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template<class T, class = void>
+struct is_equality_comparable : std::false_type { };
+
+template<class T>
+struct is_equality_comparable
+<T, typename std::enable_if<true, decltype(std::declval<T const&>() == std::declval<T const&>(),
+                                           (void)0)>::type
+> : std::true_type { };
+
+template<class T>
+void test_traits()
+{
+    static_assert(std::is_default_constructible <std::fpos<T> >::value, "");
+    static_assert(std::is_copy_constructible    <std::fpos<T> >::value, "");
+    static_assert(std::is_copy_assignable       <std::fpos<T> >::value, "");
+    static_assert(std::is_destructible          <std::fpos<T> >::value, "");
+    static_assert(is_equality_comparable        <std::fpos<T> >::value, "");
+
+    static_assert(std::is_trivially_copy_constructible<T>::value ==
+                  std::is_trivially_copy_constructible<std::fpos<T> >::value, "");
+    static_assert(std::is_trivially_copy_assignable<T>::value ==
+                  std::is_trivially_copy_assignable<std::fpos<T> >::value, "");
+    static_assert(std::is_trivially_destructible<T>::value ==
+                  std::is_trivially_destructible<std::fpos<T> >::value, "");
+}
+
+struct Foo { };
+
+int main(int, char**)
+{
+    test_traits<std::mbstate_t>();
+    test_traits<int>();
+    test_traits<Foo>();
+
+    // Position type requirements table 106 (in order):
+
+    std::streampos p1(42);
+    std::streamoff o1(p1);
+
+    {
+        assert(o1 == 42);
+    }
+    {
+        std::streampos p2(42);
+        std::streampos q1(43);
+        std::streampos const p3(44);
+        std::streampos const q2(45);
+        assert(p2 != q1);
+        assert(p3 != q2);
+        assert(p2 != q2);
+        assert(p3 != q1);
+    }
+    {
+        std::streampos p2 = p1 + o1;
+        assert(p2 == 84);
+    }
+    {
+        std::streampos& p2 = p1 += o1;
+        assert(p2 == 84);
+        assert(p1 == 84);
+    }
+    {
+        std::streampos p2 = p1 - o1;
+        assert(p2 == 42);
+    }
+    {
+        std::streampos& p2 = p1 -= o1;
+        assert(p2 == 42);
+        assert(p1 == 42);
+    }
+    {
+        std::streampos p2 = o1 + p1;
+        assert(p2 == 84);
+    }
+    {
+        std::streampos q1(42);
+        std::streamoff o2 = q1 - p1;
+        assert(o2 == 0);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/offset.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/offset.pass.cpp
new file mode 100644
index 0000000..5bf28f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/offset.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// converts to and from streamoff
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::fpos<std::mbstate_t> P;
+    P p(std::streamoff(7));
+    std::streamoff offset(p);
+    assert(offset == 7);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/streamsize.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/streamsize.pass.cpp
new file mode 100644
index 0000000..1ff971b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/streamsize.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// streamsize and streamoff interconvert
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::streamoff o(5);
+    std::streamsize sz(o);
+    assert(sz == 5);
+    std::streamoff o2(sz);
+    assert(o == o2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/subtraction.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/subtraction.pass.cpp
new file mode 100644
index 0000000..d55b2e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/fpos/fpos.operations/subtraction.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class StateT> class fpos
+
+// Subtraction with offset
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::fpos<std::mbstate_t> P;
+    P p(11);
+    std::streamoff o(6);
+    P q = p - o;
+    assert(q == P(5));
+    p -= o;
+    assert(p == q);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/flags.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/flags.pass.cpp
new file mode 100644
index 0000000..cc7da71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/flags.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// fmtflags flags() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    const test t;
+    assert(t.flags() == (test::skipws | test::dec));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/flags_fmtflags.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/flags_fmtflags.pass.cpp
new file mode 100644
index 0000000..a57ff68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/flags_fmtflags.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// fmtflags flags(fmtflags fmtfl);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.flags() == (test::skipws | test::dec));
+    test::fmtflags f = t.flags(test::hex | test::right);
+    assert(f == (test::skipws | test::dec));
+    assert(t.flags() == (test::hex | test::right));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/precision.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/precision.pass.cpp
new file mode 100644
index 0000000..c90ee67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/precision.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// streamsize precision() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    const test t;
+    assert(t.precision() == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/precision_streamsize.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/precision_streamsize.pass.cpp
new file mode 100644
index 0000000..ef18319
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/precision_streamsize.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// streamsize precision(streamsize prec);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.precision() == 6);
+    std::streamsize p = t.precision(10);
+    assert(p == 6);
+    assert(t.precision() == 10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/setf_fmtflags.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/setf_fmtflags.pass.cpp
new file mode 100644
index 0000000..96d7257
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/setf_fmtflags.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// fmtflags setf(fmtflags fmtfl)
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.flags() == (test::skipws | test::dec));
+    test::fmtflags f = t.setf(test::hex | test::right);
+    assert(f == (test::skipws | test::dec));
+    assert(t.flags() == (test::skipws | test::dec | test::hex | test::right));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/setf_fmtflags_mask.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/setf_fmtflags_mask.pass.cpp
new file mode 100644
index 0000000..dfbf106
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/setf_fmtflags_mask.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// fmtflags setf(fmtflags fmtfl, fmtflags mask);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.flags() == (test::skipws | test::dec));
+    test::fmtflags f = t.setf(test::hex | test::right, test::dec | test::right);
+    assert(f == (test::skipws | test::dec));
+    assert(t.flags() == (test::skipws | test::right));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/unsetf_mask.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/unsetf_mask.pass.cpp
new file mode 100644
index 0000000..a11fcac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/unsetf_mask.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// void unsetf(fmtflags mask);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.flags() == (test::skipws | test::dec));
+    t.unsetf(test::dec | test::right);
+    assert(t.flags() == test::skipws);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/width.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/width.pass.cpp
new file mode 100644
index 0000000..9a864ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/width.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// streamsize width() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    const test t;
+    assert(t.width() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/width_streamsize.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/width_streamsize.pass.cpp
new file mode 100644
index 0000000..189d149
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/fmtflags.state/width_streamsize.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// streamsize width(streamsize wide);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.width() == 0);
+    std::streamsize w = t.width(4);
+    assert(w == 0);
+    assert(t.width() == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.callback/register_callback.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.callback/register_callback.pass.cpp
new file mode 100644
index 0000000..da28695
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.callback/register_callback.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <ios>
+
+// class ios_base
+
+// void register_callback(event_callback fn, int index);
+
+#include <ios>
+#include <string>
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int f1_called = 0;
+
+void f1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 4);
+        ++f1_called;
+    }
+}
+
+int main(int, char**)
+{
+    test t;
+    std::ios_base& b = t;
+    b.register_callback(f1, 4);
+    b.register_callback(f1, 4);
+    b.register_callback(f1, 4);
+    std::locale l = b.imbue(std::locale(LOCALE_en_US_UTF_8));
+    assert(f1_called == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.cons/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.cons/dtor.pass.cpp
new file mode 100644
index 0000000..1db5608
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.cons/dtor.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ~ios_base()
+
+#include <ios>
+#include <string>
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+bool f1_called = false;
+bool f2_called = false;
+bool f3_called = false;
+
+void f1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::erase_event)
+    {
+        assert(!f1_called);
+        assert( f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == "C");
+        assert(index == 4);
+        f1_called = true;
+    }
+}
+
+void f2(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::erase_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == "C");
+        assert(index == 5);
+        f2_called = true;
+    }
+}
+
+void f3(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::erase_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert(!f3_called);
+        assert(stream.getloc().name() == "C");
+        assert(index == 6);
+        f3_called = true;
+    }
+}
+
+int main(int, char**)
+{
+    {
+        test t;
+        std::ios_base& b = t;
+        b.register_callback(f1, 4);
+        b.register_callback(f2, 5);
+        b.register_callback(f3, 6);
+    }
+    assert(f1_called);
+    assert(f2_called);
+    assert(f3_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.locales/getloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.locales/getloc.pass.cpp
new file mode 100644
index 0000000..71135ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.locales/getloc.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// locale getloc() const;
+
+#include <ios>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    const test t;
+    assert(t.getloc().name() == std::string("C"));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.locales/imbue.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.locales/imbue.pass.cpp
new file mode 100644
index 0000000..46c0b54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.locales/imbue.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <ios>
+
+// class ios_base
+
+// locale imbue(const locale& loc);
+
+#include <ios>
+#include <string>
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+bool f1_called = false;
+bool f2_called = false;
+bool f3_called = false;
+
+void f1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert( f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 4);
+        f1_called = true;
+    }
+}
+
+void f2(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 5);
+        f2_called = true;
+    }
+}
+
+void f3(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert(!f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 6);
+        f3_called = true;
+    }
+}
+
+int main(int, char**)
+{
+    test t;
+    std::ios_base& b = t;
+    b.register_callback(f1, 4);
+    b.register_callback(f2, 5);
+    b.register_callback(f3, 6);
+    std::locale l = b.imbue(std::locale(LOCALE_en_US_UTF_8));
+    assert(l.name() == std::string("C"));
+    assert(b.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+    assert(f1_called);
+    assert(f2_called);
+    assert(f3_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/iword.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/iword.pass.cpp
new file mode 100644
index 0000000..44f94ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/iword.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// long& iword(int idx);
+
+// This test compiles but never completes when compiled against the MSVC STL
+// UNSUPPORTED: stdlib=msvc
+
+#include <ios>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    std::ios_base& b = t;
+    for (int i = 0; i < 10000; ++i)
+    {
+        assert(b.iword(i) == 0);
+        b.iword(i) = i;
+        assert(b.iword(i) == i);
+        for (int j = 0; j <= i; ++j)
+            assert(b.iword(j) == j);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/pword.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/pword.pass.cpp
new file mode 100644
index 0000000..35d52c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/pword.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// void*& pword(int idx);
+
+// This test compiles but never completes when compiled against the MSVC STL
+// UNSUPPORTED: stdlib=msvc
+
+#include <ios>
+#include <string>
+#include <cassert>
+#include <cstdint>
+
+#include "test_macros.h"
+
+class test
+    : public std::ios
+{
+public:
+    test()
+    {
+        init(0);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    std::ios_base& b = t;
+    for (std::intptr_t i = 0; i < 10000; ++i)
+    {
+        assert(b.pword(i) == 0);
+        b.pword(i) = (void*)i;
+        assert(b.pword(i) == (void*)i);
+        for (std::intptr_t j = 0; j <= i; ++j)
+            assert(b.pword(j) == (void*)j);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/xalloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/xalloc.pass.cpp
new file mode 100644
index 0000000..93fb084
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.base.storage/xalloc.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// static int xalloc();
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int index = std::ios_base::xalloc();
+    for (int i = 0; i < 10000; ++i)
+        assert(std::ios_base::xalloc() == ++index);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.members.static/sync_with_stdio.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.members.static/sync_with_stdio.pass.cpp
new file mode 100644
index 0000000..0ec24b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.members.static/sync_with_stdio.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// bool sync_with_stdio(bool sync = true);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert( std::ios_base::sync_with_stdio(false));
+    assert(!std::ios_base::sync_with_stdio(false));
+    assert(!std::ios_base::sync_with_stdio(true));
+    assert( std::ios_base::sync_with_stdio(true));
+    assert( std::ios_base::sync_with_stdio());
+    assert( std::ios_base::sync_with_stdio(false));
+    assert(!std::ios_base::sync_with_stdio());
+    assert( std::ios_base::sync_with_stdio());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_Init/ios_Init.multiple.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_Init/ios_Init.multiple.pass.cpp
new file mode 100644
index 0000000..1a9aaa9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_Init/ios_Init.multiple.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <iostream>
+#include <cassert>
+
+#include "test_macros.h"
+
+// Test to make sure that the streams only get initialized once
+// Taken from https://llvm.org/PR43300
+
+// The dylibs shipped on macOS so far do not contain the fix for PR43300, so
+// this test fails.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+int main(int, char**)
+{
+
+    std::cout << "Hello!";
+    std::ios_base::fmtflags stock_flags = std::cout.flags();
+
+    std::cout << std::boolalpha << true;
+    std::ios_base::fmtflags ba_flags = std::cout.flags();
+    assert(stock_flags != ba_flags);
+
+    std::ios_base::Init init_streams;
+    std::ios_base::fmtflags after_init = std::cout.flags();
+    assert(after_init == ba_flags);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_Init/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_Init/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_Init/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_failure/ctor_char_pointer_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_failure/ctor_char_pointer_error_code.pass.cpp
new file mode 100644
index 0000000..2cd66c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_failure/ctor_char_pointer_error_code.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base::failure
+
+// explicit failure(const char* msg, const error_code& ec = io_errc::stream);
+
+#include <ios>
+#include <string>
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::string what_arg("io test message");
+        std::ios_base::failure se(what_arg.c_str(), make_error_code(std::errc::is_a_directory));
+        assert(se.code() == std::make_error_code(std::errc::is_a_directory));
+        std::string what_message(se.what());
+        assert(what_message.find(what_arg) != std::string::npos);
+        assert(what_message.find(std::generic_category().message(static_cast<int>
+            (std::errc::is_a_directory))) != std::string::npos);
+    }
+    {
+        std::string what_arg("io test message");
+        std::ios_base::failure se(what_arg.c_str());
+        assert(se.code() == std::make_error_code(std::io_errc::stream));
+        std::string what_message(se.what());
+        assert(what_message.find(what_arg) != std::string::npos);
+        assert(what_message.find(std::iostream_category().message(static_cast<int>
+            (std::io_errc::stream))) != std::string::npos);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_failure/ctor_string_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_failure/ctor_string_error_code.pass.cpp
new file mode 100644
index 0000000..ed22248
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_failure/ctor_string_error_code.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base::failure
+
+// explicit failure(const string& msg, const error_code& ec = io_errc::stream);
+
+#include <ios>
+#include <string>
+#include <system_error>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    // LWG2462 std::ios_base::failure is overspecified
+    static_assert((std::is_base_of<std::system_error, std::ios_base::failure>::value), "");
+
+    {
+        std::string what_arg("io test message");
+        std::ios_base::failure se(what_arg, make_error_code(std::errc::is_a_directory));
+        assert(se.code() == std::make_error_code(std::errc::is_a_directory));
+        std::string what_message(se.what());
+        assert(what_message.find(what_arg) != std::string::npos);
+        assert(what_message.find(std::generic_category().message(static_cast<int>
+            (std::errc::is_a_directory))) != std::string::npos);
+    }
+    {
+        std::string what_arg("io test message");
+        std::ios_base::failure se(what_arg);
+        assert(se.code() == std::make_error_code(std::io_errc::stream));
+        std::string what_message(se.what());
+        assert(what_message.find(what_arg) != std::string::npos);
+        assert(what_message.find(std::iostream_category().message(static_cast<int>
+            (std::io_errc::stream))) != std::string::npos);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_fmtflags/fmtflags.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_fmtflags/fmtflags.pass.cpp
new file mode 100644
index 0000000..bf964cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_fmtflags/fmtflags.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// static const fmtflags boolalpha;
+// static const fmtflags dec;
+// static const fmtflags fixed;
+// static const fmtflags hex;
+// static const fmtflags internal;
+// static const fmtflags left;
+// static const fmtflags oct;
+// static const fmtflags right;
+// static const fmtflags scientific;
+// static const fmtflags showbase;
+// static const fmtflags showpoint;
+// static const fmtflags showpos;
+// static const fmtflags skipws;
+// static const fmtflags unitbuf;
+// static const fmtflags uppercase;
+// static const fmtflags adjustfield = left | right | internal;
+// static const fmtflags basefield   = dec | oct | hex;
+// static const fmtflags floatfield  = scientific | fixed;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::ios_base::boolalpha);
+    assert(std::ios_base::dec);
+    assert(std::ios_base::fixed);
+    assert(std::ios_base::hex);
+    assert(std::ios_base::internal);
+    assert(std::ios_base::left);
+    assert(std::ios_base::oct);
+    assert(std::ios_base::right);
+    assert(std::ios_base::scientific);
+    assert(std::ios_base::showbase);
+    assert(std::ios_base::showpoint);
+    assert(std::ios_base::showpos);
+    assert(std::ios_base::skipws);
+    assert(std::ios_base::unitbuf);
+    assert(std::ios_base::uppercase);
+
+    assert
+    (
+        ( std::ios_base::boolalpha
+        & std::ios_base::dec
+        & std::ios_base::fixed
+        & std::ios_base::hex
+        & std::ios_base::internal
+        & std::ios_base::left
+        & std::ios_base::oct
+        & std::ios_base::right
+        & std::ios_base::scientific
+        & std::ios_base::showbase
+        & std::ios_base::showpoint
+        & std::ios_base::showpos
+        & std::ios_base::skipws
+        & std::ios_base::unitbuf
+        & std::ios_base::uppercase) == 0
+    );
+
+    assert(std::ios_base::adjustfield == (std::ios_base::left
+                                        | std::ios_base::right
+                                        | std::ios_base::internal));
+    assert(std::ios_base::basefield == (std::ios_base::dec
+                                      | std::ios_base::oct
+                                      | std::ios_base::hex));
+    assert(std::ios_base::floatfield == (std::ios_base::scientific
+                                       | std::ios_base::fixed));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_iostate/iostate.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_iostate/iostate.pass.cpp
new file mode 100644
index 0000000..e60dea7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_iostate/iostate.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// static const iostate badbit;
+// static const iostate eofbit;
+// static const iostate failbit;
+// static const iostate goodbit = 0;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::ios_base::badbit);
+    assert(std::ios_base::eofbit);
+    assert(std::ios_base::failbit);
+
+    assert
+    (
+        ( std::ios_base::badbit
+        & std::ios_base::eofbit
+        & std::ios_base::failbit) == 0
+    );
+
+    assert(std::ios_base::goodbit == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_openmode/openmode.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_openmode/openmode.pass.cpp
new file mode 100644
index 0000000..2683439
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_openmode/openmode.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// static const openmode app;
+// static const openmode ate;
+// static const openmode binary;
+// static const openmode in;
+// static const openmode out;
+// static const openmode trunc;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::ios_base::app);
+    assert(std::ios_base::ate);
+    assert(std::ios_base::binary);
+    assert(std::ios_base::in);
+    assert(std::ios_base::out);
+    assert(std::ios_base::trunc);
+
+    assert
+    (
+        ( std::ios_base::app
+        & std::ios_base::ate
+        & std::ios_base::binary
+        & std::ios_base::in
+        & std::ios_base::out
+        & std::ios_base::trunc) == 0
+    );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_seekdir/seekdir.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_seekdir/seekdir.pass.cpp
new file mode 100644
index 0000000..c1ae4f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios.base/ios.types/ios_seekdir/seekdir.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// static const seekdir beg;
+// static const seekdir cur;
+// static const seekdir end;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::ios_base::beg != std::ios_base::cur);
+    assert(std::ios_base::beg != std::ios_base::end);
+    assert(std::ios_base::cur != std::ios_base::end);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.cons/ctor_streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.cons/ctor_streambuf.pass.cpp
new file mode 100644
index 0000000..a81e11c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.cons/ctor_streambuf.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// explicit basic_ios(basic_streambuf<charT,traits>* sb);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::streambuf* sb = 0;
+        std::basic_ios<char> ios(sb);
+        assert(ios.rdbuf() == sb);
+        assert(ios.tie() == 0);
+        assert(ios.rdstate() == std::ios::badbit);
+        assert(ios.exceptions() == std::ios::goodbit);
+        assert(ios.flags() == (std::ios::skipws | std::ios::dec));
+        assert(ios.width() == 0);
+        assert(ios.precision() == 6);
+        assert(ios.fill() == ' ');
+        assert(ios.getloc() == std::locale());
+    }
+    {
+        std::streambuf* sb = (std::streambuf*)1;
+        std::basic_ios<char> ios(sb);
+        assert(ios.rdbuf() == sb);
+        assert(ios.tie() == 0);
+        assert(ios.rdstate() == std::ios::goodbit);
+        assert(ios.exceptions() == std::ios::goodbit);
+        assert(ios.flags() == (std::ios::skipws | std::ios::dec));
+        assert(ios.width() == 0);
+        assert(ios.precision() == 6);
+        assert(ios.fill() == ' ');
+        assert(ios.getloc() == std::locale());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/copyfmt.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/copyfmt.pass.cpp
new file mode 100644
index 0000000..949c87e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/copyfmt.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// basic_ios& copyfmt(const basic_ios& rhs);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "platform_support.h" // locale name macros
+
+#include "test_macros.h"
+
+struct testbuf
+    : public std::streambuf
+{
+};
+
+bool f1_called = false;
+bool f2_called = false;
+
+bool g1_called = false;
+bool g2_called = false;
+bool g3_called = false;
+
+void f1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::erase_event)
+    {
+        assert(!f1_called);
+        assert( f2_called);
+        assert(!g1_called);
+        assert(!g2_called);
+        assert(!g3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 4);
+        f1_called = true;
+    }
+}
+
+void f2(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::erase_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert(!g1_called);
+        assert(!g2_called);
+        assert(!g3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 5);
+        f2_called = true;
+    }
+}
+
+void g1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::copyfmt_event)
+    {
+        assert( f1_called);
+        assert( f2_called);
+        assert(!g1_called);
+        assert( g2_called);
+        assert( g3_called);
+        assert(stream.getloc().name() == LOCALE_fr_FR_UTF_8);
+        assert(index == 7);
+        g1_called = true;
+    }
+}
+
+void g2(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::copyfmt_event)
+    {
+        assert( f1_called);
+        assert( f2_called);
+        assert(!g1_called);
+        assert(!g2_called);
+        assert( g3_called);
+        assert(stream.getloc().name() == LOCALE_fr_FR_UTF_8);
+        assert(index == 8);
+        g2_called = true;
+    }
+}
+
+void g3(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::copyfmt_event)
+    {
+        assert( f1_called);
+        assert( f2_called);
+        assert(!g1_called);
+        assert(!g2_called);
+        assert(!g3_called);
+        assert(stream.getloc().name() == LOCALE_fr_FR_UTF_8);
+        assert(index == 9);
+        g3_called = true;
+    }
+}
+
+int main(int, char**)
+{
+    testbuf sb1;
+    std::ios ios1(&sb1);
+    ios1.flags(std::ios::boolalpha | std::ios::dec | std::ios::fixed);
+    ios1.precision(1);
+    ios1.width(11);
+    ios1.imbue(std::locale(LOCALE_en_US_UTF_8));
+    ios1.exceptions(std::ios::failbit);
+    ios1.setstate(std::ios::eofbit);
+    ios1.register_callback(f1, 4);
+    ios1.register_callback(f2, 5);
+    ios1.iword(0) = 1;
+    ios1.iword(1) = 2;
+    ios1.iword(2) = 3;
+    char c1, c2, c3;
+    ios1.pword(0) = &c1;
+    ios1.pword(1) = &c2;
+    ios1.pword(2) = &c3;
+    ios1.tie((std::ostream*)1);
+    ios1.fill('1');
+
+    testbuf sb2;
+    std::ios ios2(&sb2);
+    ios2.flags(std::ios::showpoint | std::ios::uppercase);
+    ios2.precision(2);
+    ios2.width(12);
+    ios2.imbue(std::locale(LOCALE_fr_FR_UTF_8));
+    ios2.exceptions(std::ios::eofbit);
+    ios2.setstate(std::ios::goodbit);
+    ios2.register_callback(g1, 7);
+    ios2.register_callback(g2, 8);
+    ios2.register_callback(g3, 9);
+    ios2.iword(0) = 4;
+    ios2.iword(1) = 5;
+    ios2.iword(2) = 6;
+    ios2.iword(3) = 7;
+    ios2.iword(4) = 8;
+    ios2.iword(5) = 9;
+    char d1, d2;
+    ios2.pword(0) = &d1;
+    ios2.pword(1) = &d2;
+    ios2.tie((std::ostream*)2);
+    ios2.fill('2');
+
+    ios1.copyfmt(ios1);
+    assert(!f1_called);
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        ios1.copyfmt(ios2);
+        assert(false);
+    }
+    catch (std::ios_base::failure&)
+    {
+    }
+    assert(ios1.rdstate() == std::ios::eofbit);
+    assert(ios1.rdbuf() == &sb1);
+    assert(ios1.flags() == (std::ios::showpoint | std::ios::uppercase));
+    assert(ios1.precision() == 2);
+    assert(ios1.width() == 12);
+    assert(ios1.getloc().name() == LOCALE_fr_FR_UTF_8);
+    assert(ios1.exceptions() == std::ios::eofbit);
+    assert(f1_called);
+    assert(f2_called);
+    assert(g1_called);
+    assert(g2_called);
+    assert(g3_called);
+    assert(ios1.iword(0) == 4);
+    assert(ios1.iword(1) == 5);
+    assert(ios1.iword(2) == 6);
+    assert(ios1.iword(3) == 7);
+    assert(ios1.iword(4) == 8);
+    assert(ios1.iword(5) == 9);
+    assert(ios1.pword(0) == &d1);
+    assert(ios1.pword(1) == &d2);
+    assert(ios1.tie() == (std::ostream*)2);
+    assert(ios1.fill() == '2');
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/fill.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/fill.pass.cpp
new file mode 100644
index 0000000..b4cfdca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/fill.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// char_type fill() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::ios ios(0);
+    assert(ios.fill() == ' ');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/fill_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/fill_char_type.pass.cpp
new file mode 100644
index 0000000..ae8ecec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/fill_char_type.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// char_type fill(char_type fillch);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    char c = ios.fill('*');
+    assert(c == ' ');
+    assert(ios.fill() == '*');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/imbue.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/imbue.pass.cpp
new file mode 100644
index 0000000..579e04a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/imbue.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// locale imbue(const locale& loc);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+struct testbuf
+    : public std::streambuf
+{
+};
+
+bool f1_called = false;
+bool f2_called = false;
+bool f3_called = false;
+
+void f1(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert( f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 4);
+        f1_called = true;
+    }
+}
+
+void f2(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert( f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 5);
+        f2_called = true;
+    }
+}
+
+void f3(std::ios_base::event ev, std::ios_base& stream, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(!f1_called);
+        assert(!f2_called);
+        assert(!f3_called);
+        assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(index == 6);
+        f3_called = true;
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        ios.register_callback(f1, 4);
+        ios.register_callback(f2, 5);
+        ios.register_callback(f3, 6);
+        std::locale l = ios.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(l.name() == std::string("C"));
+        assert(ios.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+        assert(f1_called);
+        assert(f2_called);
+        assert(f3_called);
+    }
+    f1_called = false;
+    f2_called = false;
+    f3_called = false;
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        ios.register_callback(f1, 4);
+        ios.register_callback(f2, 5);
+        ios.register_callback(f3, 6);
+        std::locale l = ios.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(l.name() == std::string("C"));
+        assert(ios.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+        assert(sb.getloc().name() == std::string(LOCALE_en_US_UTF_8));
+        assert(f1_called);
+        assert(f2_called);
+        assert(f3_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/move.pass.cpp
new file mode 100644
index 0000000..a011c1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/move.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// void move(basic_ios&& rhs);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+struct testbuf
+    : public std::streambuf
+{
+};
+
+struct testios
+    : public std::ios
+{
+    testios() {}
+    testios(std::streambuf* p) : std::ios(p) {}
+    void move(std::ios& x) {std::ios::move(x);}
+};
+
+bool f1_called = false;
+bool f2_called = false;
+
+bool g1_called = false;
+bool g2_called = false;
+bool g3_called = false;
+
+void f1(std::ios_base::event, std::ios_base&, int)
+{
+    f1_called = true;
+}
+
+void f2(std::ios_base::event, std::ios_base&, int)
+{
+    f2_called = true;
+}
+
+void g1(std::ios_base::event ev, std::ios_base&, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(index == 7);
+        g1_called = true;
+    }
+}
+
+void g2(std::ios_base::event ev, std::ios_base&, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(index == 8);
+        g2_called = true;
+    }
+}
+
+void g3(std::ios_base::event ev, std::ios_base&, int index)
+{
+    if (ev == std::ios_base::imbue_event)
+    {
+        assert(index == 9);
+        g3_called = true;
+    }
+}
+
+int main(int, char**)
+{
+    testios ios1;
+    testbuf sb2;
+    std::ios ios2(&sb2);
+    ios2.flags(std::ios::showpoint | std::ios::uppercase);
+    ios2.precision(2);
+    ios2.width(12);
+    ios2.imbue(std::locale(LOCALE_fr_FR_UTF_8));
+    ios2.exceptions(std::ios::eofbit);
+    ios2.setstate(std::ios::goodbit);
+    ios2.register_callback(g1, 7);
+    ios2.register_callback(g2, 8);
+    ios2.register_callback(g3, 9);
+    ios2.iword(0) = 4;
+    ios2.iword(1) = 5;
+    ios2.iword(2) = 6;
+    ios2.iword(3) = 7;
+    ios2.iword(4) = 8;
+    ios2.iword(5) = 9;
+    char d1, d2;
+    ios2.pword(0) = &d1;
+    ios2.pword(1) = &d2;
+    ios2.tie((std::ostream*)2);
+    ios2.fill('2');
+
+    ios1.move(ios2);
+
+    assert(ios1.rdstate() == std::ios::goodbit);
+    assert(ios1.rdbuf() == 0);
+    assert(ios1.flags() == (std::ios::showpoint | std::ios::uppercase));
+    assert(ios1.precision() == 2);
+    assert(ios1.width() == 12);
+    assert(ios1.getloc().name() == LOCALE_fr_FR_UTF_8);
+    assert(ios1.exceptions() == std::ios::eofbit);
+    assert(!f1_called);
+    assert(!f2_called);
+    assert(!g1_called);
+    assert(!g2_called);
+    assert(!g3_called);
+    assert(ios1.iword(0) == 4);
+    assert(ios1.iword(1) == 5);
+    assert(ios1.iword(2) == 6);
+    assert(ios1.iword(3) == 7);
+    assert(ios1.iword(4) == 8);
+    assert(ios1.iword(5) == 9);
+    assert(ios1.pword(0) == &d1);
+    assert(ios1.pword(1) == &d2);
+    assert(ios1.tie() == (std::ostream*)2);
+    assert(ios1.fill() == '2');
+    ios1.imbue(std::locale("C"));
+    assert(!f1_called);
+    assert(!f2_called);
+    assert(g1_called);
+    assert(g2_called);
+    assert(g3_called);
+
+    assert(ios2.rdbuf() == &sb2);
+    assert(ios2.tie() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/narrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/narrow.pass.cpp
new file mode 100644
index 0000000..bc862cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/narrow.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// char narrow(char_type c, char dfault) const;
+
+// XFAIL: no-wide-characters
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::wios ios(0);
+    assert(ios.narrow(L'c', '*') == 'c');
+    assert(ios.narrow(L'\u203C', '*') == '*');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/rdbuf.pass.cpp
new file mode 100644
index 0000000..af27d8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/rdbuf.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// basic_streambuf<charT,traits>* rdbuf() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::ios ios(0);
+        assert(ios.rdbuf() == 0);
+    }
+    {
+        std::streambuf* sb = (std::streambuf*)1;
+        const std::ios ios(sb);
+        assert(ios.rdbuf() == sb);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/rdbuf_streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/rdbuf_streambuf.pass.cpp
new file mode 100644
index 0000000..c7ae965
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/rdbuf_streambuf.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    assert(ios.rdbuf() == 0);
+    assert(!ios.good());
+    std::streambuf* sb = (std::streambuf*)1;
+    std::streambuf* sb2 = ios.rdbuf(sb);
+    assert(sb2 == 0);
+    assert(ios.rdbuf() == sb);
+    assert(ios.good());
+    sb2 = ios.rdbuf(0);
+    assert(sb2 == (std::streambuf*)1);
+    assert(ios.rdbuf() == 0);
+    assert(ios.bad());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/set_rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/set_rdbuf.pass.cpp
new file mode 100644
index 0000000..04b1b9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/set_rdbuf.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// void set_rdbuf(basic_streambuf<charT, traits>* sb);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf
+    : public std::streambuf
+{
+};
+
+struct testios
+    : public std::ios
+{
+    testios(std::streambuf* p) : std::ios(p) {}
+    void set_rdbuf(std::streambuf* x) {std::ios::set_rdbuf(x);}
+};
+
+int main(int, char**)
+{
+    testbuf sb1;
+    testbuf sb2;
+    testios ios(&sb1);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        ios.setstate(std::ios::badbit);
+        ios.exceptions(std::ios::badbit);
+        assert(false);
+    }
+    catch (...)
+    {
+    }
+#endif
+    ios.set_rdbuf(&sb2);
+    assert(ios.rdbuf() == &sb2);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        ios.setstate(std::ios::badbit);
+        ios.exceptions(std::ios::badbit);
+    }
+    catch (...)
+    {
+    }
+#endif
+    ios.set_rdbuf(0);
+    assert(ios.rdbuf() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/swap.pass.cpp
new file mode 100644
index 0000000..a882fb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/swap.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// void move(basic_ios&& rhs);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+struct testbuf
+    : public std::streambuf
+{
+};
+
+struct testios
+    : public std::ios
+{
+    testios(std::streambuf* p) : std::ios(p) {}
+    void swap(std::ios& x) {std::ios::swap(x);}
+};
+
+bool f1_called = false;
+bool f2_called = false;
+
+bool g1_called = false;
+bool g2_called = false;
+bool g3_called = false;
+
+void f1(std::ios_base::event, std::ios_base&, int index)
+{
+    assert(index == 4);
+    f1_called = true;
+}
+
+void f2(std::ios_base::event, std::ios_base&, int index)
+{
+    assert(index == 5);
+    f2_called = true;
+}
+
+void g1(std::ios_base::event, std::ios_base&, int index)
+{
+    assert(index == 7);
+    g1_called = true;
+}
+
+void g2(std::ios_base::event, std::ios_base&, int index)
+{
+    assert(index == 8);
+    g2_called = true;
+}
+
+void g3(std::ios_base::event, std::ios_base&, int index)
+{
+    assert(index == 9);
+    g3_called = true;
+}
+
+int main(int, char**)
+{
+    testbuf sb1;
+    testios ios1(&sb1);
+    ios1.flags(std::ios::boolalpha | std::ios::dec | std::ios::fixed);
+    ios1.precision(1);
+    ios1.width(11);
+    ios1.imbue(std::locale(LOCALE_en_US_UTF_8));
+    ios1.exceptions(std::ios::failbit);
+    ios1.setstate(std::ios::eofbit);
+    ios1.register_callback(f1, 4);
+    ios1.register_callback(f2, 5);
+    ios1.iword(0) = 1;
+    ios1.iword(1) = 2;
+    ios1.iword(2) = 3;
+    char c1, c2, c3;
+    ios1.pword(0) = &c1;
+    ios1.pword(1) = &c2;
+    ios1.pword(2) = &c3;
+    ios1.tie((std::ostream*)1);
+    ios1.fill('1');
+
+    testbuf sb2;
+    testios ios2(&sb2);
+    ios2.flags(std::ios::showpoint | std::ios::uppercase);
+    ios2.precision(2);
+    ios2.width(12);
+    ios2.imbue(std::locale(LOCALE_fr_FR_UTF_8));
+    ios2.exceptions(std::ios::eofbit);
+    ios2.setstate(std::ios::goodbit);
+    ios2.register_callback(g1, 7);
+    ios2.register_callback(g2, 8);
+    ios2.register_callback(g3, 9);
+    ios2.iword(0) = 4;
+    ios2.iword(1) = 5;
+    ios2.iword(2) = 6;
+    ios2.iword(3) = 7;
+    ios2.iword(4) = 8;
+    ios2.iword(5) = 9;
+    char d1, d2;
+    ios2.pword(0) = &d1;
+    ios2.pword(1) = &d2;
+    ios2.tie((std::ostream*)2);
+    ios2.fill('2');
+
+    ios1.swap(ios2);
+
+    assert(ios1.rdstate() == std::ios::goodbit);
+    assert(ios1.rdbuf() == &sb1);
+    assert(ios1.flags() == (std::ios::showpoint | std::ios::uppercase));
+    assert(ios1.precision() == 2);
+    assert(ios1.width() == 12);
+    assert(ios1.getloc().name() == LOCALE_fr_FR_UTF_8);
+    assert(ios1.exceptions() == std::ios::eofbit);
+    assert(!f1_called);
+    assert(!f2_called);
+    assert(!g1_called);
+    assert(!g2_called);
+    assert(!g3_called);
+    assert(ios1.iword(0) == 4);
+    assert(ios1.iword(1) == 5);
+    assert(ios1.iword(2) == 6);
+    assert(ios1.iword(3) == 7);
+    assert(ios1.iword(4) == 8);
+    assert(ios1.iword(5) == 9);
+    assert(ios1.pword(0) == &d1);
+    assert(ios1.pword(1) == &d2);
+    assert(ios1.tie() == (std::ostream*)2);
+    assert(ios1.fill() == '2');
+    ios1.imbue(std::locale("C"));
+    assert(!f1_called);
+    assert(!f2_called);
+    assert(g1_called);
+    assert(g2_called);
+    assert(g3_called);
+
+    assert(ios2.rdstate() == std::ios::eofbit);
+    assert(ios2.rdbuf() == &sb2);
+    assert(ios2.flags() == (std::ios::boolalpha | std::ios::dec | std::ios::fixed));
+    assert(ios2.precision() == 1);
+    assert(ios2.width() == 11);
+    assert(ios2.getloc().name() == LOCALE_en_US_UTF_8);
+    assert(ios2.exceptions() == std::ios::failbit);
+    assert(ios2.iword(0) == 1);
+    assert(ios2.iword(1) == 2);
+    assert(ios2.iword(2) == 3);
+    assert(ios2.pword(0) == &c1);
+    assert(ios2.pword(1) == &c2);
+    assert(ios2.pword(2) == &c3);
+    assert(ios2.tie() == (std::ostream*)1);
+    assert(ios2.fill() == '1');
+    ios2.imbue(std::locale("C"));
+    assert(f1_called);
+    assert(f2_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/tie.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/tie.pass.cpp
new file mode 100644
index 0000000..3e76cb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/tie.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// basic_ostream<charT,traits>* tie() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::basic_ios<char> ios(0);
+    assert(ios.tie() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/tie_ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/tie_ostream.pass.cpp
new file mode 100644
index 0000000..57728f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/tie_ostream.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ostream* os = (std::ostream*)1;
+    std::ostream* r = ios.tie(os);
+    assert(r == 0);
+    assert(ios.tie() == os);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/widen.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/widen.pass.cpp
new file mode 100644
index 0000000..0de166e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/basic.ios.members/widen.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// char_type widen(char c) const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::ios ios(0);
+    assert(ios.widen('c') == 'c');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/bad.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/bad.pass.cpp
new file mode 100644
index 0000000..223b82a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/bad.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// bool bad() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        assert(ios.bad());
+        ios.setstate(std::ios::eofbit);
+        assert(ios.bad());
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(!ios.bad());
+        ios.setstate(std::ios::eofbit);
+        assert(!ios.bad());
+        ios.setstate(std::ios::failbit);
+        assert(!ios.bad());
+        ios.setstate(std::ios::badbit);
+        assert(ios.bad());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp
new file mode 100644
index 0000000..3fe50c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/bool.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// operator unspecified-bool-type() const;
+
+#include <ios>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    assert(static_cast<bool>(ios) == !ios.fail());
+    ios.setstate(std::ios::failbit);
+    assert(static_cast<bool>(ios) == !ios.fail());
+    static_assert((!std::is_convertible<std::ios, int>::value), "");
+    static_assert((!std::is_convertible<std::ios const&, int>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert(!std::is_convertible<std::ios, void*>::value, "");
+    static_assert(!std::is_convertible<std::ios, bool>::value, "");
+#else
+    static_assert(std::is_convertible<std::ios, void*>::value, "");
+    static_assert(std::is_convertible<std::ios, bool>::value, "");
+    (void)(ios == 0);  // SPEC2006 apparently relies on this to compile
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/clear.pass.cpp
new file mode 100644
index 0000000..6fc38fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/clear.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// void clear(iostate state = goodbit);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        ios.clear();
+        assert(ios.rdstate() == std::ios::badbit);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            ios.exceptions(std::ios::badbit);
+            assert(false);
+        }
+        catch (...)
+        {
+        }
+        try
+        {
+            ios.clear();
+            assert(false);
+        }
+        catch (std::ios::failure&)
+        {
+            assert(ios.rdstate() == std::ios::badbit);
+        }
+        try
+        {
+            ios.clear(std::ios::eofbit);
+            assert(false);
+        }
+        catch (std::ios::failure&)
+        {
+            assert(ios.rdstate() == (std::ios::eofbit | std::ios::badbit));
+        }
+#endif
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        ios.clear();
+        assert(ios.rdstate() == std::ios::goodbit);
+        ios.exceptions(std::ios::badbit);
+        ios.clear();
+        assert(ios.rdstate() == std::ios::goodbit);
+        ios.clear(std::ios::eofbit);
+        assert(ios.rdstate() == std::ios::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/eof.pass.cpp
new file mode 100644
index 0000000..ae9acc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/eof.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// bool eof() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        assert(!ios.eof());
+        ios.setstate(std::ios::eofbit);
+        assert(ios.eof());
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(!ios.eof());
+        ios.setstate(std::ios::eofbit);
+        assert(ios.eof());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/exceptions.pass.cpp
new file mode 100644
index 0000000..f5c3c3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/exceptions.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// iostate exceptions() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        const std::ios ios(0);
+        assert(ios.exceptions() == std::ios::goodbit);
+    }
+    {
+        testbuf sb;
+        const std::ios ios(&sb);
+        assert(ios.exceptions() == std::ios::goodbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/exceptions_iostate.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/exceptions_iostate.pass.cpp
new file mode 100644
index 0000000..b8b6577
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/exceptions_iostate.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// iostate exceptions() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        assert(ios.exceptions() == std::ios::goodbit);
+        ios.exceptions(std::ios::eofbit);
+        assert(ios.exceptions() == std::ios::eofbit);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            ios.exceptions(std::ios::badbit);
+            assert(false);
+        }
+        catch (std::ios::failure&)
+        {
+        }
+        assert(ios.exceptions() == std::ios::badbit);
+#endif
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(ios.exceptions() == std::ios::goodbit);
+        ios.exceptions(std::ios::eofbit);
+        assert(ios.exceptions() == std::ios::eofbit);
+        ios.exceptions(std::ios::badbit);
+        assert(ios.exceptions() == std::ios::badbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/fail.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/fail.pass.cpp
new file mode 100644
index 0000000..e5f1d91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/fail.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// bool fail() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        assert(ios.fail());
+        ios.setstate(std::ios::eofbit);
+        assert(ios.fail());
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(!ios.fail());
+        ios.setstate(std::ios::eofbit);
+        assert(!ios.fail());
+        ios.setstate(std::ios::badbit);
+        assert(ios.fail());
+        ios.setstate(std::ios::failbit);
+        assert(ios.fail());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/good.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/good.pass.cpp
new file mode 100644
index 0000000..ad90719
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/good.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// bool good() const;
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        assert(!ios.good());
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        assert(ios.good());
+        ios.setstate(std::ios::eofbit);
+        assert(!ios.good());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/not.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/not.pass.cpp
new file mode 100644
index 0000000..2036699
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/not.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// bool operator!() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    assert(!ios == ios.fail());
+    ios.setstate(std::ios::failbit);
+    assert(!ios == ios.fail());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/rdstate.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/rdstate.pass.cpp
new file mode 100644
index 0000000..4853ded
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/rdstate.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// iostate rdstate() const;
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    assert(ios.rdstate() == std::ios::badbit);
+    ios.setstate(std::ios::failbit);
+    assert(ios.rdstate() == (std::ios::failbit | std::ios::badbit));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/setstate.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/setstate.pass.cpp
new file mode 100644
index 0000000..ea954be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/iostate.flags/setstate.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits> class basic_ios
+
+// void setstate(iostate state);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    {
+        std::ios ios(0);
+        ios.setstate(std::ios::goodbit);
+        assert(ios.rdstate() == std::ios::badbit);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            ios.exceptions(std::ios::badbit);
+            assert(false);
+        }
+        catch (...)
+        {
+        }
+        try
+        {
+            ios.setstate(std::ios::goodbit);
+            assert(false);
+        }
+        catch (std::ios::failure&)
+        {
+            assert(ios.rdstate() == std::ios::badbit);
+        }
+        try
+        {
+            ios.setstate(std::ios::eofbit);
+            assert(false);
+        }
+        catch (std::ios::failure&)
+        {
+            assert(ios.rdstate() == (std::ios::eofbit | std::ios::badbit));
+        }
+#endif
+    }
+    {
+        testbuf sb;
+        std::ios ios(&sb);
+        ios.setstate(std::ios::goodbit);
+        assert(ios.rdstate() == std::ios::goodbit);
+        ios.setstate(std::ios::eofbit);
+        assert(ios.rdstate() == std::ios::eofbit);
+        ios.setstate(std::ios::failbit);
+        assert(ios.rdstate() == (std::ios::eofbit | std::ios::failbit));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/types.pass.cpp
new file mode 100644
index 0000000..0c4b997
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/ios/types.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ios : public ios_base
+// {
+// public:
+//     typedef charT char_type;
+//     typedef typename traits::int_type int_type;
+//     typedef typename traits::pos_type pos_type;
+//     typedef typename traits::off_type off_type;
+//     typedef traits traits_type;
+
+#include <ios>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::ios_base, std::basic_ios<char> >::value), "");
+    static_assert((std::is_same<std::basic_ios<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_ios<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_ios<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_ios<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_ios<char>::off_type, std::char_traits<char>::off_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/is_error_code_enum_io_errc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/is_error_code_enum_io_errc.pass.cpp
new file mode 100644
index 0000000..13f90d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/is_error_code_enum_io_errc.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// template <> struct is_error_code_enum<io_errc> : public true_type {};
+
+#include <ios>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_error_code_enum  <std::io_errc>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(std::is_error_code_enum_v<std::io_errc>, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/internal.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/internal.pass.cpp
new file mode 100644
index 0000000..a1203bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/internal.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& internal(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::internal(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::internal);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/left.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/left.pass.cpp
new file mode 100644
index 0000000..64771c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/left.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& left(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::left(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::left);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/right.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/right.pass.cpp
new file mode 100644
index 0000000..180f60c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/adjustfield.manip/right.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& right(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::right(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::right);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/dec.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/dec.pass.cpp
new file mode 100644
index 0000000..878e4b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/dec.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& dec(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::dec(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::dec);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/hex.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/hex.pass.cpp
new file mode 100644
index 0000000..d8ea0a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/hex.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& hex(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::hex(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::hex);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/oct.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/oct.pass.cpp
new file mode 100644
index 0000000..cbff40a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/basefield.manip/oct.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& oct(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::oct(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::oct);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/iostream_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/iostream_category.pass.cpp
new file mode 100644
index 0000000..62e52ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/iostream_category.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// const error_category& iostream_category();
+
+#include <ios>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat1 = std::iostream_category();
+    std::string m1 = e_cat1.name();
+    assert(m1 == "iostream");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/make_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/make_error_code.pass.cpp
new file mode 100644
index 0000000..2aaca4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/make_error_code.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// error_code make_error_code(io_errc e);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec = make_error_code(std::io_errc::stream);
+        assert(ec.value() == static_cast<int>(std::io_errc::stream));
+        assert(ec.category() == std::iostream_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/make_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/make_error_condition.pass.cpp
new file mode 100644
index 0000000..f4e16f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/error.reporting/make_error_condition.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// error_condition make_error_condition(io_errc e);
+
+#include <ios>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_condition ec1 = std::make_error_condition(std::io_errc::stream);
+        assert(ec1.value() == static_cast<int>(std::io_errc::stream));
+        assert(ec1.category() == std::iostream_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/defaultfloat.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/defaultfloat.pass.cpp
new file mode 100644
index 0000000..172a2cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/defaultfloat.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& defaultfloat(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::defaultfloat(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::fixed));
+    assert(!(ios.flags() & std::ios::scientific));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/fixed.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/fixed.pass.cpp
new file mode 100644
index 0000000..98b5466
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/fixed.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& fixed(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::fixed(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::fixed);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/hexfloat.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/hexfloat.pass.cpp
new file mode 100644
index 0000000..3a2fbbb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/hexfloat.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& hexfloat(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::hexfloat(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::fixed);
+    assert(ios.flags() & std::ios::scientific);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/scientific.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/scientific.pass.cpp
new file mode 100644
index 0000000..0f5e649
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/floatfield.manip/scientific.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& scientific(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::scientific(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::scientific);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/boolalpha.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/boolalpha.pass.cpp
new file mode 100644
index 0000000..a52dd41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/boolalpha.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& boolalpha(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::boolalpha(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::boolalpha);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noboolalpha.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noboolalpha.pass.cpp
new file mode 100644
index 0000000..92be09a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noboolalpha.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& noboolalpha(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::boolalpha(ios);
+    std::ios_base& r = std::noboolalpha(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::boolalpha));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowbase.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowbase.pass.cpp
new file mode 100644
index 0000000..bbb2ebe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowbase.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& noshowbase(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::showbase(ios);
+    std::ios_base& r = std::noshowbase(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::showbase));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowpoint.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowpoint.pass.cpp
new file mode 100644
index 0000000..bf7166a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowpoint.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& noshowpoint(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::showpoint(ios);
+    std::ios_base& r = std::noshowpoint(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::showpoint));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowpos.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowpos.pass.cpp
new file mode 100644
index 0000000..ddf9f7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noshowpos.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& noshowpos(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::showpos(ios);
+    std::ios_base& r = std::noshowpos(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::showpos));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noskipws.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noskipws.pass.cpp
new file mode 100644
index 0000000..086ff2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/noskipws.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& noskipws(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::skipws(ios);
+    std::ios_base& r = std::noskipws(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::skipws));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/nounitbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/nounitbuf.pass.cpp
new file mode 100644
index 0000000..ec6d47c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/nounitbuf.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& nounitbuf(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::unitbuf(ios);
+    std::ios_base& r = std::nounitbuf(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::unitbuf));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/nouppercase.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/nouppercase.pass.cpp
new file mode 100644
index 0000000..ce74a65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/nouppercase.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& nouppercase(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::uppercase(ios);
+    std::ios_base& r = std::nouppercase(ios);
+    assert(&r == &ios);
+    assert(!(ios.flags() & std::ios::uppercase));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showbase.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showbase.pass.cpp
new file mode 100644
index 0000000..531df59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showbase.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& showbase(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::showbase(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::showbase);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showpoint.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showpoint.pass.cpp
new file mode 100644
index 0000000..e7c90f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showpoint.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& showpoint(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::showpoint(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::showpoint);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showpos.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showpos.pass.cpp
new file mode 100644
index 0000000..dee4580
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/showpos.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& showpos(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::showpos(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::showpos);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/skipws.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/skipws.pass.cpp
new file mode 100644
index 0000000..c6ad7e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/skipws.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& skipws(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::skipws(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::skipws);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/unitbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/unitbuf.pass.cpp
new file mode 100644
index 0000000..1c58420
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/unitbuf.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& unitbuf(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::unitbuf(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::unitbuf);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/uppercase.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/uppercase.pass.cpp
new file mode 100644
index 0000000..1c6433a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/std.ios.manip/fmtflags.manip/uppercase.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// class ios_base
+
+// ios_base& uppercase(ios_base& str);
+
+#include <ios>
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct testbuf : public std::streambuf {};
+
+int main(int, char**)
+{
+    testbuf sb;
+    std::ios ios(&sb);
+    std::ios_base& r = std::uppercase(ios);
+    assert(&r == &ios);
+    assert(ios.flags() & std::ios::uppercase);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/stream.types/streamoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/stream.types/streamoff.pass.cpp
new file mode 100644
index 0000000..c8c1b4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/stream.types/streamoff.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// typedef OFF_T streamoff;
+
+#include <ios>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_integral<std::streamoff>::value, "");
+    static_assert(std::is_signed<std::streamoff>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/stream.types/streamsize.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/stream.types/streamsize.pass.cpp
new file mode 100644
index 0000000..f8dcae5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.base/stream.types/streamsize.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ios>
+
+// typedef SZ_T streamsize;
+
+#include <ios>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_integral<std::streamsize>::value, "");
+    static_assert(std::is_signed<std::streamsize>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostream.limits.imbue/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostream.limits.imbue/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostream.limits.imbue/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostreams.limits.pos/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostreams.limits.pos/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostreams.limits.pos/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostreams.threadsafety/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostreams.threadsafety/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/iostreams.threadsafety/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/iostreams.requirements/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf.reqts/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf.reqts/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf.reqts/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/copy.fail.cpp
new file mode 100644
index 0000000..2854850
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/copy.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// basic_streambuf(const basic_streambuf& rhs);  // protected
+
+#include <streambuf>
+#include <cassert>
+
+std::streambuf &get();
+
+int main(int, char**)
+{
+    std::streambuf sb = get(); // expected-error {{calling a protected constructor}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/copy.pass.cpp
new file mode 100644
index 0000000..5806751
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/copy.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// basic_streambuf(const basic_streambuf& rhs);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    test() {}
+
+    test(const test& t)
+        : std::basic_streambuf<CharT>(t)
+    {
+        assert(this->eback() == t.eback());
+        assert(this->gptr()  == t.gptr());
+        assert(this->egptr() == t.egptr());
+        assert(this->pbase() == t.pbase());
+        assert(this->pptr()  == t.pptr());
+        assert(this->epptr() == t.epptr());
+        assert(this->getloc() == t.getloc());
+    }
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+    void setp(CharT* pbeg, CharT* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        test<char> t2 = t;
+    }
+    {
+        char g1, g2, g3, p1, p3;
+        test<char> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<char> t2 = t;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        wchar_t g1, g2, g3, p1, p3;
+        test<wchar_t> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<wchar_t> t2 = t;
+    }
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2 = t;
+    }
+#endif
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+    {
+        test<char> t;
+        test<char> t2 = t;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2 = t;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.compile.fail.cpp
new file mode 100644
index 0000000..ec7650a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// basic_streambuf();  // is protected
+
+#include <streambuf>
+
+int main(int, char**)
+{
+    std::basic_streambuf<char> sb;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp
new file mode 100644
index 0000000..df9df90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// basic_streambuf();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test()
+    {
+        assert(this->eback() == 0);
+        assert(this->gptr() == 0);
+        assert(this->egptr() == 0);
+        assert(this->pbase() == 0);
+        assert(this->pptr() == 0);
+        assert(this->epptr() == 0);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        assert(t.getloc().name() == "C");
+    }
+#endif
+
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+    {
+        test<char> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubseekoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubseekoff.pass.cpp
new file mode 100644
index 0000000..63fd87c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubseekoff.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// pos_type pubseekoff(off_type off, ios_base::seekdir way,
+//                     ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.pubseekoff(0, std::ios_base::beg) == -1);
+        assert(t.pubseekoff(0, std::ios_base::beg, std::ios_base::app) == -1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubseekpos.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubseekpos.pass.cpp
new file mode 100644
index 0000000..cd97e95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubseekpos.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// pos_type pubseekpos(pos_type sp,
+//                     ios_base::openmode which = ios_base::in | ios_base::out;
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.pubseekpos(0, std::ios_base::app) == -1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubsetbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubsetbuf.pass.cpp
new file mode 100644
index 0000000..553613d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubsetbuf.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// basic_streambuf* pubsetbuf(char_type* s, streamsize n);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.pubsetbuf(0, 0) == &t);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubsync.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubsync.pass.cpp
new file mode 100644
index 0000000..d4ec248
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.buffer/pubsync.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int pubsync();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.pubsync() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.locales/locales.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.locales/locales.pass.cpp
new file mode 100644
index 0000000..97b20f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.locales/locales.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// locale pubimbue(const locale& loc);
+// locale getloc() const;
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test() {}
+
+    void imbue(const std::locale&)
+    {
+        assert(this->getloc().name() == LOCALE_en_US_UTF_8);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.getloc().name() == "C");
+    }
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+    {
+        test<char> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+        assert(t.pubimbue(std::locale(LOCALE_fr_FR_UTF_8)).name() ==
+               LOCALE_en_US_UTF_8);
+        assert(t.getloc().name() == LOCALE_fr_FR_UTF_8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/in_avail.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/in_avail.pass.cpp
new file mode 100644
index 0000000..f8325c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/in_avail.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize in_avail();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int showmanyc_called = 0;
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+
+    test() {}
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+protected:
+    std::streamsize showmanyc()
+    {
+        ++showmanyc_called;
+        return 5;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        assert(t.in_avail() == 5);
+        assert(showmanyc_called == 1);
+        char in[5];
+        t.setg(in, in+2, in+5);
+        assert(t.in_avail() == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sbumpc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sbumpc.pass.cpp
new file mode 100644
index 0000000..e8e2b13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sbumpc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type sbumpc();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int uflow_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+
+protected:
+    int_type uflow()
+    {
+        ++uflow_called;
+        return 'a';
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        assert(uflow_called == 0);
+        assert(t.sbumpc() == 'a');
+        assert(uflow_called == 1);
+        char in[] = "ABC";
+        t.setg(in, in, in+sizeof(in));
+        assert(t.sbumpc() == 'A');
+        assert(uflow_called == 1);
+        assert(t.sbumpc() == 'B');
+        assert(uflow_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sgetc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sgetc.pass.cpp
new file mode 100644
index 0000000..c0f07ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sgetc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type sgetc();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int underflow_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+
+protected:
+    int_type underflow()
+    {
+        ++underflow_called;
+        return 'a';
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        assert(underflow_called == 0);
+        assert(t.sgetc() == 'a');
+        assert(underflow_called == 1);
+        char in[] = "ABC";
+        t.setg(in, in, in+sizeof(in));
+        assert(t.sgetc() == 'A');
+        assert(underflow_called == 1);
+        assert(t.sgetc() == 'A');
+        assert(underflow_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sgetn.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sgetn.pass.cpp
new file mode 100644
index 0000000..8fb9428
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/sgetn.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize sgetn(char_type* s, streamsize n);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int xsgetn_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    test() {}
+
+protected:
+    std::streamsize xsgetn(char_type*, std::streamsize)
+    {
+        ++xsgetn_called;
+        return 10;
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(xsgetn_called == 0);
+    assert(t.sgetn(0, 0) == 10);
+    assert(xsgetn_called == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/snextc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/snextc.pass.cpp
new file mode 100644
index 0000000..85bd0e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.get/snextc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type snextc();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int uflow_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+
+protected:
+    int_type uflow()
+    {
+        ++uflow_called;
+        return 'a';
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        assert(uflow_called == 0);
+        assert(t.snextc() == -1);
+        assert(uflow_called == 1);
+        char in[] = "ABC";
+        t.setg(in, in, in+sizeof(in));
+        assert(t.snextc() == 'B');
+        assert(uflow_called == 1);
+        assert(t.snextc() == 'C');
+        assert(uflow_called == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.pback/sputbackc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.pback/sputbackc.pass.cpp
new file mode 100644
index 0000000..e27833a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.pback/sputbackc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type sputbackc(char_type c);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int pbackfail_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+
+protected:
+    int_type pbackfail(int_type = traits_type::eof())
+    {
+        ++pbackfail_called;
+        return 'a';
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        assert(pbackfail_called == 0);
+        assert(t.sputbackc('A') == 'a');
+        assert(pbackfail_called == 1);
+        char in[] = "ABC";
+        t.setg(in, in+1, in+sizeof(in));
+        assert(t.sputbackc('A') == 'A');
+        assert(pbackfail_called == 1);
+        assert(t.sputbackc('A') == 'a');
+        assert(pbackfail_called == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.pback/sungetc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.pback/sungetc.pass.cpp
new file mode 100644
index 0000000..540d268
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.pback/sungetc.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type sungetc();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int pbackfail_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+
+protected:
+    int_type pbackfail(int_type = traits_type::eof())
+    {
+        ++pbackfail_called;
+        return 'a';
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        assert(pbackfail_called == 0);
+        assert(t.sungetc() == 'a');
+        assert(pbackfail_called == 1);
+        char in[] = "ABC";
+        t.setg(in, in+1, in+sizeof(in));
+        assert(t.sungetc() == 'A');
+        assert(pbackfail_called == 1);
+        assert(t.sungetc() == 'a');
+        assert(pbackfail_called == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.put/sputc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.put/sputc.pass.cpp
new file mode 100644
index 0000000..177e91d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.put/sputc.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type sputc(char_type c);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int overflow_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+    void setp(char* pbeg, char* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+
+protected:
+    int_type overflow(int_type = traits_type::eof())
+    {
+        ++overflow_called;
+        return 'a';
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        assert(overflow_called == 0);
+        assert(t.sputc('A') == 'a');
+        assert(overflow_called == 1);
+        char out[3] = {0};
+        t.setp(out, out+sizeof(out));
+        assert(t.sputc('A') == 'A');
+        assert(overflow_called == 1);
+        assert(out[0] == 'A');
+        assert(t.sputc('B') == 'B');
+        assert(overflow_called == 1);
+        assert(out[0] == 'A');
+        assert(out[1] == 'B');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.put/sputn.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.put/sputn.pass.cpp
new file mode 100644
index 0000000..841a61e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.members/streambuf.pub.put/sputn.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize sputn(const char_type* s, streamsize n);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int xsputn_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    test() {}
+
+protected:
+    std::streamsize xsputn(const char_type*, std::streamsize)
+    {
+        ++xsputn_called;
+        return 5;
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(xsputn_called == 0);
+    assert(t.sputn(0, 0) == 5);
+    assert(xsputn_called == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.assign/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.assign/assign.pass.cpp
new file mode 100644
index 0000000..8a976e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.assign/assign.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// basic_streambuf& operator=(const basic_streambuf& rhs);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    test() {}
+
+    test& operator=(const test& t)
+    {
+        base::operator=(t);
+        assert(this->eback() == t.eback());
+        assert(this->gptr()  == t.gptr());
+        assert(this->egptr() == t.egptr());
+        assert(this->pbase() == t.pbase());
+        assert(this->pptr()  == t.pptr());
+        assert(this->epptr() == t.epptr());
+        assert(this->getloc() == t.getloc());
+        return *this;
+    }
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+    void setp(CharT* pbeg, CharT* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        test<char> t2;
+        t2 = t;
+    }
+    {
+        char g1, g2, g3, p1, p3;
+        test<char> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<char> t2;
+        t2 = t;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2;
+        t2 = t;
+    }
+    {
+        wchar_t g1, g2, g3, p1, p3;
+        test<wchar_t> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<wchar_t> t2;
+        t2 = t;
+    }
+#endif
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+    {
+        test<char> t;
+        test<char> t2;
+        t2 = t;
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2;
+        t2 = t;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.assign/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.assign/swap.pass.cpp
new file mode 100644
index 0000000..c575c2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.assign/swap.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void swap(basic_streambuf& rhs);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+    test() {}
+
+    void swap(test& t)
+    {
+        test old_this(*this);
+        test old_that(t);
+        base::swap(t);
+        assert(this->eback() == old_that.eback());
+        assert(this->gptr()  == old_that.gptr());
+        assert(this->egptr() == old_that.egptr());
+        assert(this->pbase() == old_that.pbase());
+        assert(this->pptr()  == old_that.pptr());
+        assert(this->epptr() == old_that.epptr());
+        assert(this->getloc() == old_that.getloc());
+
+        assert(t.eback() == old_this.eback());
+        assert(t.gptr()  == old_this.gptr());
+        assert(t.egptr() == old_this.egptr());
+        assert(t.pbase() == old_this.pbase());
+        assert(t.pptr()  == old_this.pptr());
+        assert(t.epptr() == old_this.epptr());
+        assert(t.getloc() == old_this.getloc());
+    }
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+    void setp(CharT* pbeg, CharT* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        test<char> t2;
+        t2.swap(t);
+    }
+    {
+        char g1, g2, g3, p1, p3;
+        test<char> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<char> t2;
+        t2.swap(t);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2;
+        t2.swap(t);
+    }
+    {
+        wchar_t g1, g2, g3, p1, p3;
+        test<wchar_t> t;
+        t.setg(&g1, &g2, &g3);
+        t.setp(&p1, &p3);
+        test<wchar_t> t2;
+        t2.swap(t);
+    }
+#endif
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+    {
+        test<char> t;
+        test<char> t2;
+        t2.swap(t);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        test<wchar_t> t2;
+        t2.swap(t);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/gbump.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/gbump.pass.cpp
new file mode 100644
index 0000000..f02fe42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/gbump.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void gbump(int n);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+
+    test() {}
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+
+    void gbump(int n)
+    {
+        CharT* gbeg = base::eback();
+        CharT* gnext = base::gptr();
+        CharT* gend = base::egptr();
+        base::gbump(n);
+        assert(base::eback() == gbeg);
+        assert(base::gptr() == gnext+n);
+        assert(base::egptr() == gend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        char in[] = "ABCDE";
+        t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
+        t.gbump(2);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        wchar_t in[] = L"ABCDE";
+        t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
+        t.gbump(3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/setg.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/setg.pass.cpp
new file mode 100644
index 0000000..ee6dc78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.get.area/setg.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void setg(char_type* gbeg, char_type* gnext, char_type* gend);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+
+    test() {}
+
+    void setg(CharT* gbeg, CharT* gnext, CharT* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+        assert(base::eback() == gbeg);
+        assert(base::gptr() == gnext);
+        assert(base::egptr() == gend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        char in[] = "ABC";
+        t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        wchar_t in[] = L"ABC";
+        t.setg(in, in+1, in+sizeof(in)/sizeof(in[0]));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump.pass.cpp
new file mode 100644
index 0000000..6acd179
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void pbump(int n);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+
+    test() {}
+
+    void setp(CharT* pbeg, CharT* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+
+    void pbump(int n)
+    {
+        CharT* pbeg = base::pbase();
+        CharT* pnext = base::pptr();
+        CharT* pend = base::epptr();
+        base::pbump(n);
+        assert(base::pbase() == pbeg);
+        assert(base::pptr() == pnext+n);
+        assert(base::epptr() == pend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        char in[] = "ABCDE";
+        t.setp(in, in+sizeof(in)/sizeof(in[0]));
+        t.pbump(2);
+        t.pbump(1);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        wchar_t in[] = L"ABCDE";
+        t.setp(in, in+sizeof(in)/sizeof(in[0]));
+        t.pbump(3);
+        t.pbump(1);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump2gig.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump2gig.pass.cpp
new file mode 100644
index 0000000..4c63cd1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/pbump2gig.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// UNSUPPORTED: c++03
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void pbump(int n);
+//
+// REQUIRES: long_tests
+
+// Unsupported for no-exceptions builds because they have no way to report an
+// allocation failure when attempting to allocate the 2GiB string.
+// UNSUPPORTED: no-exceptions
+
+// Android devices frequently don't have enough memory to run this test. Rather
+// than throw std::bad_alloc, exhausting memory tends to trigger the OOM Killer
+// and/or crash the device (killing adb, rebooting it, etc).
+// UNSUPPORTED: android
+
+#include <sstream>
+#include <cassert>
+#include "test_macros.h"
+
+struct SB : std::stringbuf
+{
+  SB() : std::stringbuf(std::ios::ate|std::ios::out) { }
+  const char* pubpbase() const { return pbase(); }
+  const char* pubpptr() const { return pptr(); }
+};
+
+int main(int, char**)
+{
+    try {
+        std::string str(2147483648, 'a');
+        SB sb;
+        sb.str(str);
+        assert(sb.pubpbase() <= sb.pubpptr());
+    }
+    catch (const std::length_error &) {} // maybe the string can't take 2GB
+    catch (const std::bad_alloc    &) {} // maybe we don't have enough RAM
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/setp.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/setp.pass.cpp
new file mode 100644
index 0000000..acbc000
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.protected/streambuf.put.area/setp.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// void setp(char_type* pbeg, char_type* pend);
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    typedef std::basic_streambuf<CharT> base;
+
+    test() {}
+
+    void setp(CharT* pbeg, CharT* pend)
+    {
+        base::setp(pbeg, pend);
+        assert(base::pbase() == pbeg);
+        assert(base::pptr() == pbeg);
+        assert(base::epptr() == pend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test<char> t;
+        char in[] = "ABC";
+        t.setp(in, in+sizeof(in)/sizeof(in[0]));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        test<wchar_t> t;
+        wchar_t in[] = L"ABC";
+        t.setp(in, in+sizeof(in)/sizeof(in[0]));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.buffer/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.buffer/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.buffer/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/showmanyc.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/showmanyc.pass.cpp
new file mode 100644
index 0000000..ca5e0b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/showmanyc.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize showmanyc();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int showmanyc_called = 0;
+
+template <class CharT>
+struct test
+    : public std::basic_streambuf<CharT>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    test<char> t;
+    assert(t.in_avail() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/uflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/uflow.pass.cpp
new file mode 100644
index 0000000..36a2e85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/uflow.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type uflow();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int underflow_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    test() {}
+
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.sgetc() == -1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/underflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/underflow.pass.cpp
new file mode 100644
index 0000000..b2a2157
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/underflow.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type underflow();
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.sgetc() == -1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/xsgetn.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/xsgetn.pass.cpp
new file mode 100644
index 0000000..db10657
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.get/xsgetn.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize xsgetn(char_type* s, streamsize n);
+
+#include <streambuf>
+#include <cassert>
+#include <cstring>
+
+#include "test_macros.h"
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setg(char* gbeg, char* gnext, char* gend)
+    {
+        base::setg(gbeg, gnext, gend);
+    }
+};
+
+int main(int, char**)
+{
+    test t;
+    char input[7] = "123456";
+    t.setg(input, input, input+7);
+    char output[sizeof(input)] = {0};
+    assert(t.sgetn(output, 10) == 7);
+    assert(std::strcmp(input, output) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.locales/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.locales/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.locales/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.pback/pbackfail.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.pback/pbackfail.pass.cpp
new file mode 100644
index 0000000..75a5455
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.pback/pbackfail.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type pbackfail(int_type c = traits::eof());
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+int pbackfail_called = 0;
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.sputbackc('A') == -1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/overflow.pass.cpp
new file mode 100644
index 0000000..b082f4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/overflow.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// int_type overflow(int_type c = traits::eof());
+
+#include <streambuf>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    test() {}
+};
+
+int main(int, char**)
+{
+    test t;
+    assert(t.sputc('A') == -1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.PR14074.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.PR14074.pass.cpp
new file mode 100644
index 0000000..84c7263
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.PR14074.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize xsputn(const char_type* s, streamsize n);
+
+// Test https://llvm.org/PR14074. The bug is really inside
+// basic_streambuf, but I can't seem to reproduce without going through one
+// of its derived classes.
+
+// UNSUPPORTED: no-fstream
+
+#include <cassert>
+#include <cstddef>
+#include <cstdio>
+#include <fstream>
+#include <sstream>
+#include <string>
+#include "test_macros.h"
+#include "platform_support.h"
+
+
+// Count the number of bytes in a file -- make sure to use only functionality
+// provided by the C library to avoid relying on the C++ library, which we're
+// trying to test.
+static std::size_t count_bytes(char const* filename) {
+    std::FILE* f = std::fopen(filename, "rb");
+    std::size_t count = 0;
+    while (std::fgetc(f) != EOF)
+        ++count;
+    std::fclose(f);
+    return count;
+}
+
+int main(int, char**) {
+    {
+        // with basic_stringbuf
+        std::basic_stringbuf<char> buf;
+        std::streamsize sz = buf.sputn("\xFF", 1);
+        assert(sz == 1);
+        assert(buf.str().size() == 1);
+    }
+    {
+        // with basic_filebuf
+        std::string temp = get_temp_file_name();
+        {
+            std::basic_filebuf<char> buf;
+            buf.open(temp.c_str(), std::ios_base::out);
+            std::streamsize sz = buf.sputn("\xFF", 1);
+            assert(sz == 1);
+        }
+        assert(count_bytes(temp.c_str()) == 1);
+        std::remove(temp.c_str());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.pass.cpp
new file mode 100644
index 0000000..74ffdc8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/streambuf.virtuals/streambuf.virt.put/xsputn.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf;
+
+// streamsize xsputn(const char_type* s, streamsize n);
+
+#include <streambuf>
+#include <cassert>
+#include <cstring>
+
+#include "test_macros.h"
+
+struct test
+    : public std::basic_streambuf<char>
+{
+    typedef std::basic_streambuf<char> base;
+
+    test() {}
+
+    void setp(char* pbeg, char* pend)
+    {
+        base::setp(pbeg, pend);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        test t;
+        char in[] = "123456";
+        assert(t.sputn(in, sizeof(in)) == 0);
+        char out[sizeof(in)] = {0};
+        t.setp(out, out+sizeof(out));
+        assert(t.sputn(in, sizeof(in)) == sizeof(in));
+        assert(std::strcmp(in, out) == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/types.pass.cpp
new file mode 100644
index 0000000..3dd8a3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/stream.buffers/streambuf/types.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <streambuf>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_streambuf
+// {
+// public:
+//     // types:
+//     typedef charT char_type;
+//     typedef traits traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+
+#include <streambuf>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::streambuf::char_type, char>::value), "");
+    static_assert((std::is_same<std::streambuf::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::streambuf::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::streambuf::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::streambuf::off_type, std::char_traits<char>::off_type>::value), "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_same<std::wstreambuf::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::wstreambuf::traits_type, std::char_traits<wchar_t> >::value), "");
+    static_assert((std::is_same<std::wstreambuf::int_type, std::char_traits<wchar_t>::int_type>::value), "");
+    static_assert((std::is_same<std::wstreambuf::pos_type, std::char_traits<wchar_t>::pos_type>::value), "");
+    static_assert((std::is_same<std::wstreambuf::off_type, std::char_traits<wchar_t>::off_type>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..724fe8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/member_swap.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// void swap(basic_istringstream& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss0(" 123 456");
+        std::istringstream ss(" 789 321");
+        ss.swap(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss0 >> i;
+        assert(i == 789);
+        ss0 >> i;
+        assert(i == 321);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss0(L" 123 456");
+        std::wistringstream ss(L" 789 321");
+        ss.swap(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss0 >> i;
+        assert(i == 789);
+        ss0 >> i;
+        assert(i == 321);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/move.pass.cpp
new file mode 100644
index 0000000..3fc0967
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/move.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// basic_istringstream& operator=(basic_istringstream&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss0(" 123 456");
+        std::istringstream ss;
+        ss = std::move(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+    {
+        std::istringstream s1("Aaaaa Bbbbb Cccccccccc Dddddddddddddddddd");
+        std::string s;
+        s1 >> s;
+
+        std::istringstream s2 = std::move(s1);
+        s2 >> s;
+        assert(s == "Bbbbb");
+
+        std::istringstream s3;
+        s3 = std::move(s2);
+        s3 >> s;
+        assert(s == "Cccccccccc");
+
+        s1 = std::move(s3);
+        s1 >> s;
+        assert(s == "Dddddddddddddddddd");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss0(L" 123 456");
+        std::wistringstream ss;
+        ss = std::move(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+    {
+        std::wistringstream s1(L"Aaaaa Bbbbb Cccccccccc Dddddddddddddddddd");
+        std::wstring s;
+        s1 >> s;
+
+        std::wistringstream s2 = std::move(s1);
+        s2 >> s;
+        assert(s == L"Bbbbb");
+
+        std::wistringstream s3;
+        s3 = std::move(s2);
+        s3 >> s;
+        assert(s == L"Cccccccccc");
+
+        s1 = std::move(s3);
+        s1 >> s;
+        assert(s == L"Dddddddddddddddddd");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..be46bb1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// template <class charT, class traits, class Allocator>
+//   void
+//   swap(basic_istringstream<charT, traits, Allocator>& x,
+//        basic_istringstream<charT, traits, Allocator>& y);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss0(" 123 456");
+        std::istringstream ss(" 789 321");
+        swap(ss, ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss0 >> i;
+        assert(i == 789);
+        ss0 >> i;
+        assert(i == 321);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss0(L" 123 456");
+        std::wistringstream ss(L" 789 321");
+        swap(ss, ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss0 >> i;
+        assert(i == 789);
+        ss0 >> i;
+        assert(i == 321);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/default.pass.cpp
new file mode 100644
index 0000000..2a90d5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/default.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// explicit basic_istringstream(ios_base::openmode which = ios_base::in); // before C++20
+// basic_istringstream() : basic_istringstream(ios_base::in) {}           // C++20
+// explicit basic_istringstream(ios_base::openmode which);                // C++20
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+
+template <typename S>
+void test() {
+  static_assert(test_convertible<S>(), "");
+  static_assert(!test_convertible<S, std::ios_base::openmode>(), "");
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss;
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == "");
+    }
+    {
+        std::istringstream ss(std::ios_base::in);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss;
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L"");
+    }
+    {
+        std::wistringstream ss(std::ios_base::in);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L"");
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    test<std::istringstream>();
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wistringstream>();
+#   endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp
new file mode 100644
index 0000000..45ad2d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/move.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// basic_istringstream(basic_istringstream&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss0(" 123 456");
+        std::istringstream ss(std::move(ss0));
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss0(L" 123 456");
+        std::wistringstream ss(std::move(ss0));
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/string.pass.cpp
new file mode 100644
index 0000000..9b0593f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.cons/string.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// explicit basic_istringstream(const basic_string<charT,traits,allocator>& str,
+//                              ios_base::openmode which = ios_base::in);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss(" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+    {
+        std::istringstream ss(" 123 456", std::ios_base::out);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss(L" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+    {
+        std::wistringstream ss(L" 123 456", std::ios_base::out);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.members/str.pass.cpp
new file mode 100644
index 0000000..5ab126a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/istringstream.members/str.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+
+// void str(const basic_string<charT,traits,Allocator>& s);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream ss(" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss.str(" 789");
+        ss.clear();
+        assert(ss.good());
+        assert(ss.str() == " 789");
+        ss >> i;
+        assert(i == 789);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream ss(L" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss.str(L" 789");
+        ss.clear();
+        assert(ss.good());
+        assert(ss.str() == L" 789");
+        ss >> i;
+        assert(i == 789);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/types.pass.cpp
new file mode 100644
index 0000000..da1b1de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/istringstream/types.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_istringstream
+//     : public basic_istream<charT, traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+//     typedef Allocator                      allocator_type;
+
+#include <sstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_istream<char>, std::basic_istringstream<char> >::value), "");
+    static_assert((std::is_same<std::basic_istringstream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_istringstream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_istringstream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_istringstream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_istringstream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+    static_assert((std::is_same<std::basic_istringstream<char>::allocator_type, std::allocator<char> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/lit.local.cfg
new file mode 100644
index 0000000..781b508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/lit.local.cfg
@@ -0,0 +1,3 @@
+# All non-trivial uses of iostreams require localization support
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..33161fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/member_swap.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// void swap(basic_ostringstream& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss0(" 123 456");
+        std::ostringstream ss;
+        ss.swap(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == "234 5676");
+        ss0 << i << ' ' << 567;
+        assert(ss0.str() == "234 567");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss0(L" 123 456");
+        std::wostringstream ss;
+        ss.swap(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == L"234 5676");
+        ss0 << i << ' ' << 567;
+        assert(ss0.str() == L"234 567");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/move.pass.cpp
new file mode 100644
index 0000000..bd5f9cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/move.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// basic_ostringstream& operator=(basic_ostringstream&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss0(" 123 456");
+        std::ostringstream ss;
+        ss = std::move(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == "234 5676");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss0(L" 123 456");
+        std::wostringstream ss;
+        ss = std::move(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == L"234 5676");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..227623c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// void swap(basic_ostringstream& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss0(" 123 456");
+        std::ostringstream ss;
+        swap(ss, ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == "234 5676");
+        ss0 << i << ' ' << 567;
+        assert(ss0.str() == "234 567");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss0(L" 123 456");
+        std::wostringstream ss;
+        swap(ss, ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == L"234 5676");
+        ss0 << i << ' ' << 567;
+        assert(ss0.str() == L"234 567");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/default.pass.cpp
new file mode 100644
index 0000000..92796bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/default.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// explicit basic_ostringstream(ios_base::openmode which = ios_base::out); // before C++20
+// basic_ostringstream() : basic_ostringstream(ios_base::out) {}           // C++20
+// explicit basic_ostringstream(ios_base::openmode which);                 // C++20
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+
+template <typename S>
+void test() {
+  static_assert(test_convertible<S>(), "");
+  static_assert(!test_convertible<S, std::ios_base::openmode>(), "");
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss;
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == "");
+    }
+    {
+        std::ostringstream ss(std::ios_base::out);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss;
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L"");
+    }
+    {
+        std::wostringstream ss(std::ios_base::out);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L"");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+#if TEST_STD_VER >= 11
+    test<std::ostringstream>();
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wostringstream>();
+#   endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/move.pass.cpp
new file mode 100644
index 0000000..6a63cd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/move.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// basic_ostringstream(basic_ostringstream&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss0(" 123 456");
+        std::ostringstream ss(std::move(ss0));
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == "234 5676");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss0(L" 123 456");
+        std::wostringstream ss(std::move(ss0));
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == L"234 5676");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/string.pass.cpp
new file mode 100644
index 0000000..af3c320
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.cons/string.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// explicit basic_ostringstream(const basic_string<charT,traits,allocator>& str,
+//                              ios_base::openmode which = ios_base::in);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss(" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == "234 5676");
+    }
+    {
+        std::ostringstream ss(" 123 456", std::ios_base::in);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == "234 5676");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss(L" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == L"234 5676");
+    }
+    {
+        std::wostringstream ss(L" 123 456", std::ios_base::in);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 234;
+        ss << i << ' ' << 567;
+        assert(ss.str() == L"234 5676");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.members/str.pass.cpp
new file mode 100644
index 0000000..63f6b5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/ostringstream.members/str.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+
+// void str(const basic_string<charT,traits,Allocator>& s);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream ss(" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456");
+        int i = 0;
+        ss << i;
+        assert(ss.str() == "0123 456");
+        ss << 456;
+        assert(ss.str() == "0456 456");
+        ss.str(" 789");
+        assert(ss.str() == " 789");
+        ss << "abc";
+        assert(ss.str() == "abc9");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream ss(L" 123 456");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456");
+        int i = 0;
+        ss << i;
+        assert(ss.str() == L"0123 456");
+        ss << 456;
+        assert(ss.str() == L"0456 456");
+        ss.str(L" 789");
+        assert(ss.str() == L" 789");
+        ss << L"abc";
+        assert(ss.str() == L"abc9");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/types.pass.cpp
new file mode 100644
index 0000000..b294192
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/ostringstream/types.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_ostringstream
+//     : public basic_ostream<charT, traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+//     typedef Allocator                      allocator_type;
+
+#include <sstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_ostream<char>, std::basic_ostringstream<char> >::value), "");
+    static_assert((std::is_same<std::basic_ostringstream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_ostringstream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_ostringstream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_ostringstream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_ostringstream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+    static_assert((std::is_same<std::basic_ostringstream<char>::allocator_type, std::allocator<char> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..edb977a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/member_swap.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// void swap(basic_stringbuf& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf1("testing");
+        std::stringbuf buf;
+        buf.swap(buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::in);
+        std::stringbuf buf;
+        buf.swap(buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::out);
+        std::stringbuf buf;
+        buf.swap(buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf1(L"testing");
+        std::wstringbuf buf;
+        buf.swap(buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::in);
+        std::wstringbuf buf;
+        buf.swap(buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::out);
+        std::wstringbuf buf;
+        buf.swap(buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/move.pass.cpp
new file mode 100644
index 0000000..3ae562e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/move.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// basic_stringbuf& operator=(basic_stringbuf&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf1("testing");
+        std::stringbuf buf;
+        buf = std::move(buf1);
+        assert(buf.str() == "testing");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::in);
+        std::stringbuf buf;
+        buf = std::move(buf1);
+        assert(buf.str() == "testing");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::out);
+        std::stringbuf buf;
+        buf = std::move(buf1);
+        assert(buf.str() == "testing");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf1(L"testing");
+        std::wstringbuf buf;
+        buf = std::move(buf1);
+        assert(buf.str() == L"testing");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::in);
+        std::wstringbuf buf;
+        buf = std::move(buf1);
+        assert(buf.str() == L"testing");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::out);
+        std::wstringbuf buf;
+        buf = std::move(buf1);
+        assert(buf.str() == L"testing");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..6ac1381
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// template <class charT, class traits, class Allocator>
+//   void swap(basic_stringbuf<charT, traits, Allocator>& x,
+//             basic_stringbuf<charT, traits, Allocator>& y);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf1("testing");
+        std::stringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::in);
+        std::stringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::out);
+        std::stringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf1(L"testing");
+        std::wstringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::in);
+        std::wstringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::out);
+        std::wstringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/default.pass.cpp
new file mode 100644
index 0000000..6451d44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/default.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// explicit basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out); // before C++20
+// basic_stringbuf() : basic_stringbuf(ios_base::in | ios_base::out) {}               // C++20
+// explicit basic_stringbuf(ios_base::openmode which);                                // C++20
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+template<typename CharT>
+struct testbuf
+    : std::basic_stringbuf<CharT>
+{
+    void check()
+    {
+        assert(this->eback() == NULL);
+        assert(this->gptr() == NULL);
+        assert(this->egptr() == NULL);
+        assert(this->pbase() == NULL);
+        assert(this->pptr() == NULL);
+        assert(this->epptr() == NULL);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf;
+        assert(buf.str() == "");
+    }
+    {
+        testbuf<char> buf;
+        buf.check();
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf;
+        assert(buf.str() == L"");
+    }
+    {
+        testbuf<wchar_t> buf;
+        buf.check();
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+      typedef std::stringbuf B;
+      static_assert(test_convertible<B>(), "");
+      static_assert(!test_convertible<B, std::ios_base::openmode>(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/move.pass.cpp
new file mode 100644
index 0000000..c4846c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/move.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// basic_stringbuf(basic_stringbuf&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf1("testing");
+        std::stringbuf buf(std::move(buf1));
+        assert(buf.str() == "testing");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::in);
+        std::stringbuf buf(std::move(buf1));
+        assert(buf.str() == "testing");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::out);
+        std::stringbuf buf(std::move(buf1));
+        assert(buf.str() == "testing");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf1(L"testing");
+        std::wstringbuf buf(std::move(buf1));
+        assert(buf.str() == L"testing");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::in);
+        std::wstringbuf buf(std::move(buf1));
+        assert(buf.str() == L"testing");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::out);
+        std::wstringbuf buf(std::move(buf1));
+        assert(buf.str() == L"testing");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/string.pass.cpp
new file mode 100644
index 0000000..92e02a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/string.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// explicit basic_stringbuf(const basic_string<charT,traits,Allocator>& s,
+//                          ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf("testing");
+        assert(buf.str() == "testing");
+    }
+    {
+        std::stringbuf buf("testing", std::ios_base::in);
+        assert(buf.str() == "testing");
+    }
+    {
+        std::stringbuf buf("testing", std::ios_base::out);
+        assert(buf.str() == "testing");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf(L"testing");
+        assert(buf.str() == L"testing");
+    }
+    {
+        std::wstringbuf buf(L"testing", std::ios_base::in);
+        assert(buf.str() == L"testing");
+    }
+    {
+        std::wstringbuf buf(L"testing", std::ios_base::out);
+        assert(buf.str() == L"testing");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.members/str.pass.cpp
new file mode 100644
index 0000000..18a2337
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.members/str.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// void str(const basic_string<charT,traits,Allocator>& s);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf buf("testing");
+        assert(buf.str() == "testing");
+        buf.str("another test");
+        assert(buf.str() == "another test");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf buf(L"testing");
+        assert(buf.str() == L"testing");
+        buf.str(L"another test");
+        assert(buf.str() == L"another test");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/overflow.pass.cpp
new file mode 100644
index 0000000..6aedd83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/overflow.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// int_type overflow(int_type c = traits::eof());
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int overflow_called = 0;
+
+template <class CharT>
+struct testbuf
+    : public std::basic_stringbuf<CharT>
+{
+    typedef std::basic_stringbuf<CharT> base;
+    explicit testbuf(const std::basic_string<CharT>& str,
+                     std::ios_base::openmode which = std::ios_base::in | std::ios_base::out)
+        : base(str, which) {}
+
+    typename base::int_type
+        overflow(typename base::int_type c = base::traits_type::eof())
+        {++overflow_called; return base::overflow(c);}
+
+    void pbump(int n) {base::pbump(n);}
+};
+
+int main(int, char**)
+{
+    // check overflow
+    {
+        testbuf<char> tb("");
+        tb.overflow();
+    }
+    {
+        testbuf<char> sb("abc");
+        assert(sb.sputc('1') == '1');
+        assert(sb.str() == "1bc");
+        assert(sb.sputc('2') == '2');
+        assert(sb.str() == "12c");
+        assert(sb.sputc('3') == '3');
+        assert(sb.str() == "123");
+        assert(sb.sputc('4') == '4');
+        assert(sb.str() == "1234");
+        assert(sb.sputc('5') == '5');
+        assert(sb.str() == "12345");
+        assert(sb.sputc('6') == '6');
+        assert(sb.str() == "123456");
+        assert(sb.sputc('7') == '7');
+        assert(sb.str() == "1234567");
+        assert(sb.sputc('8') == '8');
+        assert(sb.str() == "12345678");
+        assert(sb.sputc('9') == '9');
+        assert(sb.str() == "123456789");
+        assert(sb.sputc('0') == '0');
+        assert(sb.str() == "1234567890");
+        assert(sb.sputc('1') == '1');
+        assert(sb.str() == "12345678901");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"abc");
+        assert(sb.sputc(L'1') == L'1');
+        assert(sb.str() == L"1bc");
+        assert(sb.sputc(L'2') == L'2');
+        assert(sb.str() == L"12c");
+        assert(sb.sputc(L'3') == L'3');
+        assert(sb.str() == L"123");
+        assert(sb.sputc(L'4') == L'4');
+        assert(sb.str() == L"1234");
+        assert(sb.sputc(L'5') == L'5');
+        assert(sb.str() == L"12345");
+        assert(sb.sputc(L'6') == L'6');
+        assert(sb.str() == L"123456");
+        assert(sb.sputc(L'7') == L'7');
+        assert(sb.str() == L"1234567");
+        assert(sb.sputc(L'8') == L'8');
+        assert(sb.str() == L"12345678");
+        assert(sb.sputc(L'9') == L'9');
+        assert(sb.str() == L"123456789");
+        assert(sb.sputc(L'0') == L'0');
+        assert(sb.str() == L"1234567890");
+        assert(sb.sputc(L'1') == L'1');
+        assert(sb.str() == L"12345678901");
+    }
+#endif
+    {
+        testbuf<char> sb("abc", std::ios_base::app | std::ios_base::out);
+        assert(sb.sputc('1') == '1');
+        assert(sb.str() == "abc1");
+        assert(sb.sputc('2') == '2');
+        assert(sb.str() == "abc12");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/pbackfail.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/pbackfail.pass.cpp
new file mode 100644
index 0000000..fb32602
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/pbackfail.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// int_type pbackfail(int_type c = traits::eof());
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_stringbuf<CharT>
+{
+    typedef std::basic_stringbuf<CharT> base;
+    explicit testbuf(const std::basic_string<CharT>& str,
+                     std::ios_base::openmode which = std::ios_base::in | std::ios_base::out)
+        : base(str, which) {}
+
+    typename base::int_type
+        pbackfail(typename base::int_type c = base::traits_type::eof())
+        {return base::pbackfail(c);}
+
+    void pbump(int n) {base::pbump(n);}
+};
+
+int main(int, char**)
+{
+    // check pbackfail
+    {
+        testbuf<char> tb("");
+        tb.pbackfail();
+    }
+    {
+        testbuf<char> sb("123", std::ios_base::in);
+        assert(sb.sgetc() == '1');
+        assert(sb.snextc() == '2');
+        assert(sb.snextc() == '3');
+        assert(sb.sgetc() == '3');
+        assert(sb.snextc() == std::char_traits<char>::eof());
+        assert(sb.pbackfail('3') == '3');
+        assert(sb.pbackfail('3') == std::char_traits<char>::eof());
+        assert(sb.pbackfail('2') == '2');
+        assert(sb.pbackfail(std::char_traits<char>::eof()) != std::char_traits<char>::eof());
+        assert(sb.pbackfail(std::char_traits<char>::eof()) == std::char_traits<char>::eof());
+        assert(sb.str() == "123");
+    }
+    {
+        testbuf<char> sb("123");
+        assert(sb.sgetc() == '1');
+        assert(sb.snextc() == '2');
+        assert(sb.snextc() == '3');
+        assert(sb.sgetc() == '3');
+        assert(sb.snextc() == std::char_traits<char>::eof());
+        assert(sb.pbackfail('3') == '3');
+        assert(sb.pbackfail('3') == '3');
+        assert(sb.pbackfail(std::char_traits<char>::eof()) != std::char_traits<char>::eof());
+        assert(sb.pbackfail(std::char_traits<char>::eof()) == std::char_traits<char>::eof());
+        assert(sb.str() == "133");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"123", std::ios_base::in);
+        assert(sb.sgetc() == L'1');
+        assert(sb.snextc() == L'2');
+        assert(sb.snextc() == L'3');
+        assert(sb.sgetc() == L'3');
+        assert(sb.snextc() == std::char_traits<wchar_t>::eof());
+        assert(sb.pbackfail(L'3') == L'3');
+        assert(sb.pbackfail(L'3') == std::char_traits<wchar_t>::eof());
+        assert(sb.pbackfail(L'2') == L'2');
+        assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) != std::char_traits<wchar_t>::eof());
+        assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) == std::char_traits<wchar_t>::eof());
+        assert(sb.str() == L"123");
+    }
+    {
+        testbuf<wchar_t> sb(L"123");
+        assert(sb.sgetc() == L'1');
+        assert(sb.snextc() == L'2');
+        assert(sb.snextc() == L'3');
+        assert(sb.sgetc() == L'3');
+        assert(sb.snextc() == std::char_traits<wchar_t>::eof());
+        assert(sb.pbackfail(L'3') == L'3');
+        assert(sb.pbackfail(L'3') == L'3');
+        assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) != std::char_traits<wchar_t>::eof());
+        assert(sb.pbackfail(std::char_traits<wchar_t>::eof()) == std::char_traits<wchar_t>::eof());
+        assert(sb.str() == L"133");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp
new file mode 100644
index 0000000..2bd5585
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekoff.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// pos_type seekoff(off_type off, ios_base::seekdir way,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf sb(std::ios_base::in);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(0, std::ios_base::beg, std::ios_base::in) == 0);
+        assert(sb.pubseekoff(0, std::ios_base::cur, std::ios_base::in) == 0);
+        assert(sb.pubseekoff(0, std::ios_base::end, std::ios_base::in) == 0);
+    }
+    {
+        std::stringbuf sb(std::ios_base::out);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(0, std::ios_base::beg, std::ios_base::out) == 0);
+        assert(sb.pubseekoff(0, std::ios_base::cur, std::ios_base::out) == 0);
+        assert(sb.pubseekoff(0, std::ios_base::end, std::ios_base::out) == 0);
+    }
+    {
+        std::stringbuf sb("0123456789", std::ios_base::in);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == '6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+    }
+    {
+        std::stringbuf sb("0123456789", std::ios_base::out);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc('b') == 'b');
+        assert(sb.str() == "012a456b89");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == "012a456c89");
+    }
+    {
+        std::stringbuf sb("0123456789");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == '6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7);
+        assert(sb.sgetc() == '7');
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == "012a456c89");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc('3') == '3');
+        assert(sb.str() == "0123456c89");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc('7') == '7');
+        assert(sb.str() == "0123456789");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc('c') == 'c');
+        assert(sb.str() == "0123456c89");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::in);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == L'6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == L'7');
+    }
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::out);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc(L'b') == L'b');
+        assert(sb.str() == L"012a456b89");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc(L'c') == L'c');
+        assert(sb.str() == L"012a456c89");
+    }
+    {
+        std::wstringbuf sb(L"0123456789");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::in) == 6);
+        assert(sb.sgetc() == L'6');
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::in) == 7);
+        assert(sb.sgetc() == L'7');
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out | std::ios_base::in) == 7);
+        assert(sb.sgetc() == L'7');
+        assert(sb.sputc(L'c') == L'c');
+        assert(sb.str() == L"012a456c89");
+        assert(sb.pubseekoff(3, std::ios_base::beg, std::ios_base::out) == 3);
+        assert(sb.sputc(L'3') == L'3');
+        assert(sb.str() == L"0123456c89");
+        assert(sb.pubseekoff(3, std::ios_base::cur, std::ios_base::out) == 7);
+        assert(sb.sputc(L'7') == L'7');
+        assert(sb.str() == L"0123456789");
+        assert(sb.pubseekoff(-3, std::ios_base::end, std::ios_base::out) == 7);
+        assert(sb.sputc(L'c') == L'c');
+        assert(sb.str() == L"0123456c89");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp
new file mode 100644
index 0000000..68bebf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// pos_type seekpos(pos_type sp,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf sb("0123456789", std::ios_base::in);
+        assert(sb.pubseekpos(3, std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+    }
+    {
+        std::stringbuf sb("0123456789", std::ios_base::out);
+        assert(sb.pubseekpos(3, std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+    }
+    {
+        std::stringbuf sb("0123456789");
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc('3') == '3');
+        assert(sb.str() == "0123456789");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::in);
+        assert(sb.pubseekpos(3, std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+    }
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::out);
+        assert(sb.pubseekpos(3, std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+    }
+    {
+        std::wstringbuf sb(L"0123456789");
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc(L'3') == L'3');
+        assert(sb.str() == L"0123456789");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/setbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/setbuf.pass.cpp
new file mode 100644
index 0000000..2937cdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/setbuf.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// basic_streambuf<charT,traits>* setbuf(charT* s, streamsize n);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringbuf sb("0123456789");
+        assert(sb.pubsetbuf(0, 0) == &sb);
+        assert(sb.str() == "0123456789");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringbuf sb(L"0123456789");
+        assert(sb.pubsetbuf(0, 0) == &sb);
+        assert(sb.str() == L"0123456789");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/underflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/underflow.pass.cpp
new file mode 100644
index 0000000..c743609
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/underflow.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// int_type underflow();
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct testbuf
+    : public std::basic_stringbuf<CharT>
+{
+    typedef std::basic_stringbuf<CharT> base;
+    explicit testbuf(const std::basic_string<CharT>& str)
+        : base(str) {}
+
+    typename base::int_type underflow() {return base::underflow();}
+    void pbump(int n) {base::pbump(n);}
+};
+
+int main(int, char**)
+{
+    {
+        testbuf<char> sb("123");
+        sb.pbump(3);
+        assert(sb.underflow() == '1');
+        assert(sb.underflow() == '1');
+        assert(sb.snextc() == '2');
+        assert(sb.underflow() == '2');
+        assert(sb.underflow() == '2');
+        assert(sb.snextc() == '3');
+        assert(sb.underflow() == '3');
+        assert(sb.underflow() == '3');
+        assert(sb.snextc() == std::char_traits<char>::eof());
+        assert(sb.underflow() == std::char_traits<char>::eof());
+        assert(sb.underflow() == std::char_traits<char>::eof());
+        sb.sputc('4');
+        assert(sb.underflow() == '4');
+        assert(sb.underflow() == '4');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        testbuf<wchar_t> sb(L"123");
+        sb.pbump(3);
+        assert(sb.underflow() == L'1');
+        assert(sb.underflow() == L'1');
+        assert(sb.snextc() == L'2');
+        assert(sb.underflow() == L'2');
+        assert(sb.underflow() == L'2');
+        assert(sb.snextc() == L'3');
+        assert(sb.underflow() == L'3');
+        assert(sb.underflow() == L'3');
+        assert(sb.snextc() == std::char_traits<wchar_t>::eof());
+        assert(sb.underflow() == std::char_traits<wchar_t>::eof());
+        assert(sb.underflow() == std::char_traits<wchar_t>::eof());
+        sb.sputc(L'4');
+        assert(sb.underflow() == L'4');
+        assert(sb.underflow() == L'4');
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/types.pass.cpp
new file mode 100644
index 0000000..cec6169
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringbuf/types.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+//     : public basic_streambuf<charT, traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+//     typedef Allocator                      allocator_type;
+
+#include <sstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_streambuf<char>, std::basic_stringbuf<char> >::value), "");
+    static_assert((std::is_same<std::basic_stringbuf<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_stringbuf<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_stringbuf<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_stringbuf<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_stringbuf<char>::off_type, std::char_traits<char>::off_type>::value), "");
+    static_assert((std::is_same<std::basic_stringbuf<char>::allocator_type, std::allocator<char> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/default.pass.cpp
new file mode 100644
index 0000000..5ce17f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/default.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// explicit basic_stringstream(ios_base::openmode which = ios_base::out | ios_base::in); // before C++20
+// basic_stringstream() : basic_stringstream(ios_base::out | ios_base::in) {}            // C++20
+// explicit basic_stringstream(ios_base::openmode which);                                // C++20
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+
+template <typename S>
+void test() {
+  static_assert(test_convertible<S>(), "");
+  static_assert(!test_convertible<S, std::ios_base::openmode>(), "");
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss;
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == "");
+    }
+    {
+        std::stringstream ss(std::ios_base::in);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss;
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L"");
+    }
+    {
+        std::wstringstream ss(std::ios_base::in);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L"");
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    test<std::stringstream>();
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstringstream>();
+#   endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/move.pass.cpp
new file mode 100644
index 0000000..ec19c67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/move.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// basic_stringstream(basic_stringstream&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss0(" 123 456 ");
+        std::stringstream ss(std::move(ss0));
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == "456 1236 ");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss0(L" 123 456 ");
+        std::wstringstream ss(std::move(ss0));
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == L"456 1236 ");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/move2.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/move2.pass.cpp
new file mode 100644
index 0000000..d5e4578
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/move2.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// basic_stringstream(basic_stringstream&& rhs);
+
+#include <sstream>
+#include <vector>
+#include <string>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::vector<std::istringstream> vecis;
+    vecis.push_back(std::istringstream());
+    vecis.back().str("hub started at [00 6b 8b 45 69]");
+    vecis.push_back(std::istringstream());
+    vecis.back().str("hub started at [00 6b 8b 45 69]");
+    for (std::size_t n = 0; n < vecis.size(); n++)
+    {
+        assert(vecis[n].str().size() == 31);
+        vecis[n].seekg(0, std::ios_base::beg);
+        assert(vecis[n].str().size() == 31);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/string.pass.cpp
new file mode 100644
index 0000000..0fb8a02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/string.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// explicit basic_stringstream(const basic_string<charT,traits,Allocator>& str,
+//                             ios_base::openmode which = ios_base::out|ios_base::in);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename T>
+struct NoDefaultAllocator : std::allocator<T>
+{
+  template<typename U> struct rebind { using other = NoDefaultAllocator<U>; };
+  NoDefaultAllocator(int id_) : id(id_) { }
+  template<typename U> NoDefaultAllocator(const NoDefaultAllocator<U>& a) : id(a.id) { }
+  int id;
+};
+
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss(" 123 456 ");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == "456 1236 ");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss(L" 123 456 ");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == L"456 1236 ");
+    }
+#endif
+    { // This is https://llvm.org/PR33727
+        typedef std::basic_string   <char, std::char_traits<char>, NoDefaultAllocator<char> > S;
+        typedef std::basic_stringbuf<char, std::char_traits<char>, NoDefaultAllocator<char> > SB;
+
+        S s(NoDefaultAllocator<char>(1));
+        SB sb(s);
+        // This test is not required by the standard, but *where else* could it get the allocator?
+        assert(sb.str().get_allocator() == s.get_allocator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000..1d5ff8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/member_swap.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// void swap(basic_stringstream& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss0(" 123 456 ");
+        std::stringstream ss;
+        ss.swap(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == "456 1236 ");
+        ss0 << i << ' ' << 123;
+        assert(ss0.str() == "456 123");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss0(L" 123 456 ");
+        std::wstringstream ss;
+        ss.swap(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == L"456 1236 ");
+        ss0 << i << ' ' << 123;
+        assert(ss0.str() == L"456 123");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/move.pass.cpp
new file mode 100644
index 0000000..35c2197
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/move.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// basic_stringstream& operator=(basic_stringstream&& rhs);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss0(" 123 456 ");
+        std::stringstream ss;
+        ss = std::move(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == "456 1236 ");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss0(L" 123 456 ");
+        std::wstringstream ss;
+        ss = std::move(ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == L"456 1236 ");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..a882bec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.cons/stringstream.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// template <class charT, class traits, class Allocator>
+//   void
+//   swap(basic_stringstream<charT, traits, Allocator>& x,
+//        basic_stringstream<charT, traits, Allocator>& y);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss0(" 123 456 ");
+        std::stringstream ss;
+        swap(ss, ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == "456 1236 ");
+        ss0 << i << ' ' << 123;
+        assert(ss0.str() == "456 123");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss0(L" 123 456 ");
+        std::wstringstream ss;
+        swap(ss, ss0);
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == L"456 1236 ");
+        ss0 << i << ' ' << 123;
+        assert(ss0.str() == L"456 123");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.members/str.pass.cpp
new file mode 100644
index 0000000..05b233e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream.members/str.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+
+// void str(const basic_string<charT,traits,Allocator>& str);
+
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::stringstream ss(" 123 456 ");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == " 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == "456 1236 ");
+        ss.str("5466 89 ");
+        ss >> i;
+        assert(i == 5466);
+        ss >> i;
+        assert(i == 89);
+        ss << i << ' ' << 321;
+        assert(ss.str() == "89 3219 ");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstringstream ss(L" 123 456 ");
+        assert(ss.rdbuf() != 0);
+        assert(ss.good());
+        assert(ss.str() == L" 123 456 ");
+        int i = 0;
+        ss >> i;
+        assert(i == 123);
+        ss >> i;
+        assert(i == 456);
+        ss << i << ' ' << 123;
+        assert(ss.str() == L"456 1236 ");
+        ss.str(L"5466 89 ");
+        ss >> i;
+        assert(i == 5466);
+        ss >> i;
+        assert(i == 89);
+        ss << i << ' ' << 321;
+        assert(ss.str() == L"89 3219 ");
+    }
+#endif
+    {
+        std::stringstream ss;
+        ss.write("\xd1", 1);
+        assert(ss.str().length() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream/types.pass.cpp
new file mode 100644
index 0000000..11990e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/input.output/string.streams/stringstream/types.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringstream
+//     : public basic_iostream<charT, traits>
+// {
+// public:
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef typename traits_type::int_type int_type;
+//     typedef typename traits_type::pos_type pos_type;
+//     typedef typename traits_type::off_type off_type;
+//     typedef Allocator                      allocator_type;
+
+#include <sstream>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::basic_iostream<char>, std::basic_stringstream<char> >::value), "");
+    static_assert((std::is_same<std::basic_stringstream<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::basic_stringstream<char>::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_stringstream<char>::int_type, std::char_traits<char>::int_type>::value), "");
+    static_assert((std::is_same<std::basic_stringstream<char>::pos_type, std::char_traits<char>::pos_type>::value), "");
+    static_assert((std::is_same<std::basic_stringstream<char>::off_type, std::char_traits<char>::off_type>::value), "");
+    static_assert((std::is_same<std::basic_stringstream<char>::allocator_type, std::allocator<char> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/data.pass.cpp
new file mode 100644
index 0000000..72c4b65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/data.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <iterator>
+// template <class C> constexpr auto data(C& c) -> decltype(c.data());               // C++17
+// template <class C> constexpr auto data(const C& c) -> decltype(c.data());         // C++17
+// template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept;           // C++17
+// template <class E> constexpr const E* data(initializer_list<E> il) noexcept;      // C++17
+
+#include <iterator>
+#include <cassert>
+#include <vector>
+#include <array>
+#include <initializer_list>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+#include <string_view>
+#endif
+
+template<typename C>
+void test_const_container( const C& c )
+{
+//  Can't say noexcept here because the container might not be
+    assert ( std::data(c)   == c.data());
+}
+
+template<typename T>
+void test_const_container( const std::initializer_list<T>& c )
+{
+    ASSERT_NOEXCEPT(std::data(c));
+    assert ( std::data(c)   == c.begin());
+}
+
+template<typename C>
+void test_container( C& c )
+{
+//  Can't say noexcept here because the container might not be
+    assert ( std::data(c)   == c.data());
+}
+
+template<typename T>
+void test_container( std::initializer_list<T>& c)
+{
+    ASSERT_NOEXCEPT(std::data(c));
+    assert ( std::data(c)   == c.begin());
+}
+
+template<typename T, size_t Sz>
+void test_const_array( const T (&array)[Sz] )
+{
+    ASSERT_NOEXCEPT(std::data(array));
+    assert ( std::data(array) == &array[0]);
+}
+
+int main(int, char**)
+{
+    std::vector<int> v; v.push_back(1);
+    std::array<int, 1> a; a[0] = 3;
+    std::initializer_list<int> il = { 4 };
+
+    test_container ( v );
+    test_container ( a );
+    test_container ( il );
+
+    test_const_container ( v );
+    test_const_container ( a );
+    test_const_container ( il );
+
+#if TEST_STD_VER > 14
+    std::string_view sv{"ABC"};
+    test_container ( sv );
+    test_const_container ( sv );
+#endif
+
+    static constexpr int arrA [] { 1, 2, 3 };
+    test_const_array ( arrA );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.array.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.array.verify.cpp
new file mode 100644
index 0000000..e67d864
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.array.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// <iterator>
+// template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <vector>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int c[5];
+    std::empty(c); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.container.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.container.verify.cpp
new file mode 100644
index 0000000..44b102e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.container.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// <iterator>
+// template <class C> constexpr auto empty(const C& c) -> decltype(c.empty());
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <vector>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::vector<int> c;
+    std::empty(c); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.initializer_list.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.initializer_list.verify.cpp
new file mode 100644
index 0000000..f97534d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.initializer_list.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// <iterator>
+// template <class E> constexpr bool empty(initializer_list<E> il) noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <initializer_list>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::initializer_list<int> c = { 4 };
+    std::empty(c); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.pass.cpp
new file mode 100644
index 0000000..1e1c0e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/empty.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <iterator>
+// template <class C> constexpr auto empty(const C& c) -> decltype(c.empty());       // C++17
+// template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept;  // C++17
+// template <class E> constexpr bool empty(initializer_list<E> il) noexcept;         // C++17
+
+#include <iterator>
+#include <cassert>
+#include <vector>
+#include <array>
+#include <list>
+#include <initializer_list>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+#include <string_view>
+#endif
+
+template<typename C>
+void test_const_container( const C& c )
+{
+//  Can't say noexcept here because the container might not be
+    assert ( std::empty(c)   == c.empty());
+}
+
+template<typename T>
+void test_const_container( const std::initializer_list<T>& c )
+{
+    assert ( std::empty(c)   == (c.size() == 0));
+}
+
+template<typename C>
+void test_container( C& c )
+{
+//  Can't say noexcept here because the container might not be
+    assert ( std::empty(c)   == c.empty());
+}
+
+template<typename T>
+void test_container( std::initializer_list<T>& c )
+{
+    ASSERT_NOEXCEPT(std::empty(c));
+    assert ( std::empty(c)   == (c.size() == 0));
+}
+
+template<typename T, size_t Sz>
+void test_const_array( const T (&array)[Sz] )
+{
+    ASSERT_NOEXCEPT(std::empty(array));
+    assert (!std::empty(array));
+}
+
+int main(int, char**)
+{
+    std::vector<int> v; v.push_back(1);
+    std::list<int>   l; l.push_back(2);
+    std::array<int, 1> a; a[0] = 3;
+    std::initializer_list<int> il = { 4 };
+
+    test_container ( v );
+    test_container ( l );
+    test_container ( a );
+    test_container ( il );
+
+    test_const_container ( v );
+    test_const_container ( l );
+    test_const_container ( a );
+    test_const_container ( il );
+
+#if TEST_STD_VER > 14
+    std::string_view sv{"ABC"};
+    test_container ( sv );
+    test_const_container ( sv );
+#endif
+
+    static constexpr int arrA [] { 1, 2, 3 };
+    test_const_array ( arrA );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/size.pass.cpp
new file mode 100644
index 0000000..697119a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/size.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <iterator>
+// template <class C> constexpr auto size(const C& c) -> decltype(c.size());         // C++17
+// template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17
+
+#include <iterator>
+#include <cassert>
+#include <vector>
+#include <array>
+#include <list>
+#include <initializer_list>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+#include <string_view>
+#endif
+
+
+template<typename C>
+void test_container( C& c)
+{
+//  Can't say noexcept here because the container might not be
+    assert ( std::size(c)   == c.size());
+}
+
+template<typename C>
+void test_const_container( const C& c )
+{
+//  Can't say noexcept here because the container might not be
+    assert ( std::size(c)   == c.size());
+}
+
+template<typename T>
+void test_const_container( const std::initializer_list<T>& c)
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::size(c)); // our std::size is conditionally noexcept
+    assert ( std::size(c)   == c.size());
+}
+
+template<typename T>
+void test_container( std::initializer_list<T>& c )
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::size(c)); // our std::size is conditionally noexcept
+    assert ( std::size(c)   == c.size());
+}
+
+template<typename T, size_t Sz>
+void test_const_array( const T (&array)[Sz] )
+{
+    ASSERT_NOEXCEPT(std::size(array));
+    assert ( std::size(array) == Sz );
+}
+
+int main(int, char**)
+{
+    std::vector<int> v; v.push_back(1);
+    std::list<int>   l; l.push_back(2);
+    std::array<int, 1> a; a[0] = 3;
+    std::initializer_list<int> il = { 4 };
+    test_container ( v );
+    test_container ( l );
+    test_container ( a );
+    test_container ( il );
+
+    test_const_container ( v );
+    test_const_container ( l );
+    test_const_container ( a );
+    test_const_container ( il );
+
+#if TEST_STD_VER > 14
+    std::string_view sv{"ABC"};
+    test_container ( sv );
+    test_const_container ( sv );
+#endif
+
+    static constexpr int arrA [] { 1, 2, 3 };
+    test_const_array ( arrA );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/ssize.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/ssize.pass.cpp
new file mode 100644
index 0000000..9f384c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.container/ssize.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+// template <class C> constexpr auto ssize(const C& c)
+//     -> common_type_t<ptrdiff_t, make_signed_t<decltype(c.size())>>;                    // C++20
+// template <class T, ptrdiff_t> constexpr ptrdiff_t ssize(const T (&array)[N]) noexcept; // C++20
+
+#include <iterator>
+#include <cassert>
+#include <vector>
+#include <array>
+#include <list>
+#include <initializer_list>
+#include <string_view>
+#include <limits>
+
+#include "test_macros.h"
+
+// Ignore warning about std::numeric_limits comparisons being tautological.
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wtype-limits")
+
+struct short_container {
+    uint16_t size() const { return 60000; } // not noexcept
+};
+
+template<typename C>
+void test_container(C& c)
+{
+//  Can't say noexcept here because the container might not be
+    static_assert( std::is_signed_v<decltype(std::ssize(c))>, "");
+    assert ( std::ssize(c)   == static_cast<decltype(std::ssize(c))>(c.size()));
+}
+
+template<typename C>
+void test_const_container(const C& c)
+{
+//  Can't say noexcept here because the container might not be
+    static_assert( std::is_signed_v<decltype(std::ssize(c))>, "");
+    assert ( std::ssize(c)   == static_cast<decltype(std::ssize(c))>(c.size()));
+}
+
+template<typename T>
+void test_const_container(const std::initializer_list<T>& c)
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::ssize(c)); // our std::ssize is conditionally noexcept
+    static_assert( std::is_signed_v<decltype(std::ssize(c))>, "");
+    assert ( std::ssize(c)   == static_cast<decltype(std::ssize(c))>(c.size()));
+}
+
+template<typename T>
+void test_container(std::initializer_list<T>& c)
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::ssize(c)); // our std::ssize is conditionally noexcept
+    static_assert( std::is_signed_v<decltype(std::ssize(c))>, "");
+    assert ( std::ssize(c)   == static_cast<decltype(std::ssize(c))>(c.size()));
+}
+
+template<typename T, size_t Sz>
+void test_const_array(const T (&array)[Sz])
+{
+    ASSERT_NOEXCEPT(std::ssize(array));
+    static_assert( std::is_signed_v<decltype(std::ssize(array))>, "");
+    assert ( std::ssize(array) == Sz );
+}
+
+int main(int, char**)
+{
+    std::vector<int> v; v.push_back(1);
+    std::list<int>   l; l.push_back(2);
+    std::array<int, 1> a; a[0] = 3;
+    std::initializer_list<int> il = { 4 };
+    using SSize = std::common_type_t<std::ptrdiff_t, std::make_signed_t<std::size_t>>;
+    test_container ( v );
+    ASSERT_SAME_TYPE(SSize, decltype(std::ssize(v)));
+    test_container ( l );
+    ASSERT_SAME_TYPE(SSize, decltype(std::ssize(l)));
+    test_container ( a );
+    ASSERT_SAME_TYPE(SSize, decltype(std::ssize(a)));
+    test_container ( il );
+    ASSERT_SAME_TYPE(SSize, decltype(std::ssize(il)));
+
+    test_const_container ( v );
+    test_const_container ( l );
+    test_const_container ( a );
+    test_const_container ( il );
+
+    std::string_view sv{"ABC"};
+    test_container ( sv );
+    ASSERT_SAME_TYPE(SSize, decltype(std::ssize(sv)));
+    test_const_container ( sv );
+
+    static constexpr int arrA [] { 1, 2, 3 };
+    ASSERT_SAME_TYPE(ptrdiff_t, decltype(std::ssize(arrA)));
+    static_assert( std::is_signed_v<decltype(std::ssize(arrA))>, "");
+    test_const_array ( arrA );
+
+//  From P1227R2:
+//     Note that the code does not just return the std::make_signed variant of
+//     the container's size() method, because it's conceivable that a container
+//     might choose to represent its size as a uint16_t, supporting up to
+//     65,535 elements, and it would be a disaster for std::ssize() to turn a
+//     size of 60,000 into a size of -5,536.
+
+    short_container sc;
+//  is the return type signed? Is it big enough to hold 60K?
+//  is the "signed version" of sc.size() too small?
+    static_assert( std::is_signed_v<                      decltype(std::ssize(sc))>, "");
+    static_assert( std::numeric_limits<                   decltype(std::ssize(sc))>::max()  > 60000, "");
+    static_assert( std::numeric_limits<std::make_signed_t<decltype(std:: size(sc))>>::max() < 60000, "");
+    assert (std::ssize(sc) == 60000);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(std::ssize(sc));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.basic/deprecated.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.basic/deprecated.verify.cpp
new file mode 100644
index 0000000..097801d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.basic/deprecated.verify.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// std::iterator
+
+#include <iterator>
+
+std::iterator<std::input_iterator_tag, char> it; // expected-warning-re {{'iterator<{{.+}}>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.basic/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.basic/iterator.pass.cpp
new file mode 100644
index 0000000..c04f15e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.basic/iterator.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class Category, class T, class Distance = ptrdiff_t,
+//          class Pointer = T*, class Reference = T&>
+// struct iterator
+// {
+//   typedef T         value_type;
+//   typedef Distance  difference_type;
+//   typedef Pointer   pointer;
+//   typedef Reference reference;
+//   typedef Category  iterator_category;
+// };
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+template <class T>
+void
+test2()
+{
+    typedef std::iterator<std::forward_iterator_tag, T> It;
+    static_assert((std::is_same<typename It::value_type, T>::value), "");
+    static_assert((std::is_same<typename It::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename It::pointer, T*>::value), "");
+    static_assert((std::is_same<typename It::reference, T&>::value), "");
+    static_assert((std::is_same<typename It::iterator_category, std::forward_iterator_tag>::value), "");
+}
+
+template <class T>
+void
+test3()
+{
+    typedef std::iterator<std::bidirectional_iterator_tag, T, short> It;
+    static_assert((std::is_same<typename It::value_type, T>::value), "");
+    static_assert((std::is_same<typename It::difference_type, short>::value), "");
+    static_assert((std::is_same<typename It::pointer, T*>::value), "");
+    static_assert((std::is_same<typename It::reference, T&>::value), "");
+    static_assert((std::is_same<typename It::iterator_category, std::bidirectional_iterator_tag>::value), "");
+}
+
+template <class T>
+void
+test4()
+{
+    typedef std::iterator<std::random_access_iterator_tag, T, int, const T*> It;
+    static_assert((std::is_same<typename It::value_type, T>::value), "");
+    static_assert((std::is_same<typename It::difference_type, int>::value), "");
+    static_assert((std::is_same<typename It::pointer, const T*>::value), "");
+    static_assert((std::is_same<typename It::reference, T&>::value), "");
+    static_assert((std::is_same<typename It::iterator_category, std::random_access_iterator_tag>::value), "");
+}
+
+template <class T>
+void
+test5()
+{
+    typedef std::iterator<std::input_iterator_tag, T, long, const T*, const T&> It;
+    static_assert((std::is_same<typename It::value_type, T>::value), "");
+    static_assert((std::is_same<typename It::difference_type, long>::value), "");
+    static_assert((std::is_same<typename It::pointer, const T*>::value), "");
+    static_assert((std::is_same<typename It::reference, const T&>::value), "");
+    static_assert((std::is_same<typename It::iterator_category, std::input_iterator_tag>::value), "");
+}
+
+int main(int, char**)
+{
+    test2<A>();
+    test3<A>();
+    test4<A>();
+    test5<A>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp
new file mode 100644
index 0000000..8cf8640
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/advance.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+//   All of these became constexpr in C++17
+//
+// template <InputIterator Iter, class Distance>
+//   constexpr void advance(Iter& i, Distance n);
+//
+// template <BidirectionalIterator Iter, class Distance>
+//   constexpr void advance(Iter& i, Distance n);
+//
+// template <RandomAccessIterator Iter, class Distance>
+//   constexpr void advance(Iter& i, Distance n);
+
+
+// TODO: test_iterators.h includes <ranges>, and <ranges> includes <chrono> and <atomic>.
+// Lots of implementation headers under <__chrono/> and <atomic> has signed to unsigned conversion,
+// which will trigger the -Wsign-conversion warning.
+// Once those headers are fixed, enable the -Wsign-conversion for this test by removing
+// <TODO:Remove brackets> below
+
+// Make sure we catch forced conversions to the difference_type if they happen.
+// ADDITIONAL_COMPILE_FLAGS<TODO:Remove brackets>: -Wsign-conversion
+
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Distance, class It>
+TEST_CONSTEXPR_CXX17
+void check_advance(It it, Distance n, It result)
+{
+    static_assert(std::is_same<decltype(std::advance(it, n)), void>::value, "");
+    std::advance(it, n);
+    assert(it == result);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    const char* s = "1234567890";
+
+    // Check with iterator_traits::difference_type
+    {
+        typedef std::iterator_traits<const char*>::difference_type Distance;
+        check_advance<Distance>(cpp17_input_iterator<const char*>(s), 10, cpp17_input_iterator<const char*>(s+10));
+        check_advance<Distance>(forward_iterator<const char*>(s), 10, forward_iterator<const char*>(s+10));
+        check_advance<Distance>(bidirectional_iterator<const char*>(s+5), 5, bidirectional_iterator<const char*>(s+10));
+        check_advance<Distance>(bidirectional_iterator<const char*>(s+5), -5, bidirectional_iterator<const char*>(s));
+        check_advance<Distance>(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+        check_advance<Distance>(random_access_iterator<const char*>(s+5), -5, random_access_iterator<const char*>(s));
+        check_advance<Distance>(s+5, 5, s+10);
+        check_advance<Distance>(s+5, -5, s);
+    }
+
+    // Also check with other distance types
+    {
+        typedef int Distance;
+        check_advance<Distance>(cpp17_input_iterator<const char*>(s), 10, cpp17_input_iterator<const char*>(s+10));
+        check_advance<Distance>(forward_iterator<const char*>(s), 10, forward_iterator<const char*>(s+10));
+        check_advance<Distance>(bidirectional_iterator<const char*>(s), 10, bidirectional_iterator<const char*>(s+10));
+        check_advance<Distance>(random_access_iterator<const char*>(s), 10, random_access_iterator<const char*>(s+10));
+    }
+
+    // Check with unsigned distance types to catch signedness-change issues
+    {
+        typedef std::size_t Distance;
+        check_advance<Distance>(cpp17_input_iterator<const char*>(s), 10u, cpp17_input_iterator<const char*>(s+10));
+        check_advance<Distance>(forward_iterator<const char*>(s), 10u, forward_iterator<const char*>(s+10));
+        check_advance<Distance>(bidirectional_iterator<const char*>(s), 10u, bidirectional_iterator<const char*>(s+10));
+        check_advance<Distance>(random_access_iterator<const char*>(s), 10u, random_access_iterator<const char*>(s+10));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/distance.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/distance.pass.cpp
new file mode 100644
index 0000000..13caeff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/distance.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <InputIterator Iter>
+//   Iter::difference_type
+//   distance(Iter first, Iter last); // constexpr in C++17
+//
+// template <RandomAccessIterator Iter>
+//   Iter::difference_type
+//   distance(Iter first, Iter last); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17
+void check_distance(It first, It last, typename std::iterator_traits<It>::difference_type dist)
+{
+    typedef typename std::iterator_traits<It>::difference_type Difference;
+    static_assert(std::is_same<decltype(std::distance(first, last)), Difference>::value, "");
+    assert(std::distance(first, last) == dist);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    const char* s = "1234567890";
+    check_distance(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), 10);
+    check_distance(forward_iterator<const char*>(s), forward_iterator<const char*>(s+10), 10);
+    check_distance(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+10), 10);
+    check_distance(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+10), 10);
+    check_distance(s, s+10, 10);
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/next.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/next.pass.cpp
new file mode 100644
index 0000000..bc34e75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/next.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <InputIterator Iter>
+//   Iter next(Iter x, Iter::difference_type n = 1); // constexpr in C++17
+
+// LWG #2353 relaxed the requirement on next from ForwardIterator to InputIterator
+
+#include <iterator>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void
+check_next_n(It it, typename std::iterator_traits<It>::difference_type n, It result)
+{
+    static_assert(std::is_same<decltype(std::next(it, n)), It>::value, "");
+    assert(std::next(it, n) == result);
+
+    It (*next_ptr)(It, typename std::iterator_traits<It>::difference_type) = std::next;
+    assert(next_ptr(it, n) == result);
+}
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void
+check_next_1(It it, It result)
+{
+    static_assert(std::is_same<decltype(std::next(it)), It>::value, "");
+    assert(std::next(it) == result);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    const char* s = "1234567890";
+    check_next_n(cpp17_input_iterator<const char*>(s),             10, cpp17_input_iterator<const char*>(s+10));
+    check_next_n(forward_iterator<const char*>(s),           10, forward_iterator<const char*>(s+10));
+    check_next_n(bidirectional_iterator<const char*>(s),     10, bidirectional_iterator<const char*>(s+10));
+    check_next_n(bidirectional_iterator<const char*>(s+10), -10, bidirectional_iterator<const char*>(s));
+    check_next_n(random_access_iterator<const char*>(s),     10, random_access_iterator<const char*>(s+10));
+    check_next_n(random_access_iterator<const char*>(s+10), -10, random_access_iterator<const char*>(s));
+    check_next_n(s, 10, s+10);
+
+    check_next_1(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1));
+    check_next_1(forward_iterator<const char*>(s), forward_iterator<const char*>(s+1));
+    check_next_1(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+1));
+    check_next_1(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1));
+    check_next_1(s, s+1);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/prev.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/prev.pass.cpp
new file mode 100644
index 0000000..784c1b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/prev.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <InputIterator Iter>
+//   Iter prev(Iter x, Iter::difference_type n = 1); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void
+check_prev_n(It it, typename std::iterator_traits<It>::difference_type n, It result)
+{
+    static_assert(std::is_same<decltype(std::prev(it, n)), It>::value, "");
+    assert(std::prev(it, n) == result);
+
+    It (*prev_ptr)(It, typename std::iterator_traits<It>::difference_type) = std::prev;
+    assert(prev_ptr(it, n) == result);
+}
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void
+check_prev_1(It it, It result)
+{
+    static_assert(std::is_same<decltype(std::prev(it)), It>::value, "");
+    assert(std::prev(it) == result);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests()
+{
+    const char* s = "1234567890";
+    check_prev_n(forward_iterator      <const char*>(s),    -10, forward_iterator      <const char*>(s+10));
+    check_prev_n(bidirectional_iterator<const char*>(s+10),  10, bidirectional_iterator<const char*>(s));
+    check_prev_n(bidirectional_iterator<const char*>(s),    -10, bidirectional_iterator<const char*>(s+10));
+    check_prev_n(random_access_iterator<const char*>(s+10),  10, random_access_iterator<const char*>(s));
+    check_prev_n(random_access_iterator<const char*>(s),    -10, random_access_iterator<const char*>(s+10));
+    check_prev_n(s+10, 10, s);
+
+    check_prev_1(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s));
+    check_prev_1(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s));
+    check_prev_1(s+1, s);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    tests();
+#if TEST_STD_VER >= 17
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..32d770e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.operations/robust_against_adl.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+template<class>
+struct Intable {
+    operator int() const { return 1; }
+};
+
+int main(int, char**) {
+    Holder<Incomplete> *a[2] = {};
+    Holder<Incomplete> **p = a;
+#if TEST_STD_VER >= 17
+    p = std::next(p);
+    p = std::prev(p);
+    p = std::next(p, 2);
+    p = std::prev(p, 2);
+#endif
+    std::advance(p, Intable<Holder<Incomplete> >());
+    (void)std::distance(p, p);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_pointer.pass.cpp
new file mode 100644
index 0000000..7090a30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_pointer.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class T>
+// struct iterator_traits<const T*>
+// {
+//   typedef ptrdiff_t                  difference_type;
+//   typedef T                          value_type;
+//   typedef const T*                   pointer;
+//   typedef const T&                   reference;
+//   typedef random_access_iterator_tag iterator_category;
+// };
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    typedef std::iterator_traits<const A*> It;
+    static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<It::value_type, A>::value), "");
+    static_assert((std::is_same<It::pointer, const A*>::value), "");
+    static_assert((std::is_same<It::reference, const A&>::value), "");
+    static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
+
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag);
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_volatile_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_volatile_pointer.pass.cpp
new file mode 100644
index 0000000..e410d3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/const_volatile_pointer.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class T>
+// struct iterator_traits<const T*>
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    typedef std::iterator_traits<const volatile A*> It;
+    static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<It::value_type, A>::value), "");
+    static_assert((std::is_same<It::pointer, const volatile A*>::value), "");
+    static_assert((std::is_same<It::reference, const volatile A&>::value), "");
+    static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag);
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/cxx20_iterator_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/cxx20_iterator_traits.compile.pass.cpp
new file mode 100644
index 0000000..9a0f6be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/cxx20_iterator_traits.compile.pass.cpp
@@ -0,0 +1,584 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test uses iterator types from std::filesystem, which were introduced in macOS 10.15.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// template<class T>
+// struct iterator_traits;
+
+#include <iterator>
+
+#include <array>
+#include <concepts>
+#include <cstddef>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <memory>
+#include <optional>
+#include <set>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <regex>
+#  include <ostream>
+#  include <istream>
+#endif
+
+#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
+#  include <filesystem>
+#endif
+
+#include "test_iterators.h"
+#include "iterator_traits_cpp17_iterators.h"
+
+template <class Traits>
+constexpr bool has_iterator_concept_v = requires {
+  typename Traits::iterator_concept;
+};
+
+template <class Iter, class Category, class ValueType, class DiffType, class RefType, class PtrType>
+constexpr bool test() {
+  using Traits = std::iterator_traits<Iter>;
+  static_assert(std::same_as<typename Traits::iterator_category, Category>);
+  static_assert(std::same_as<typename Traits::value_type, ValueType>);
+  static_assert(std::same_as<typename Traits::difference_type, DiffType>);
+  static_assert(std::same_as<typename Traits::reference, RefType>);
+  static_assert(std::same_as<typename Traits::pointer, PtrType>);
+  if constexpr (std::is_pointer_v<Iter>) {
+    static_assert(std::same_as<typename Traits::iterator_concept, std::contiguous_iterator_tag>);
+  } else {
+    static_assert(!has_iterator_concept_v<Traits>);
+  }
+
+  return true;
+}
+
+template <class Iter, class Category>
+constexpr bool testIOIterator() {
+  return test<Iter, Category, void, std::ptrdiff_t, void, void>();
+}
+
+template <class Iter, class Category, class ValueType>
+constexpr bool testConst() {
+  return test<Iter, Category, ValueType, std::ptrdiff_t, const ValueType&, const ValueType*>();
+}
+
+template <class Iter, class Category, class ValueType>
+constexpr bool testMutable() {
+  return test<Iter, Category, ValueType, std::ptrdiff_t, ValueType&, ValueType*>();
+}
+
+// Standard types.
+
+// The Standard does not specify whether iterator_traits<It>::iterator_concept
+// exists for any particular non-pointer type, we assume it is present
+// only for pointers.
+//
+static_assert(testMutable<std::array<int, 10>::iterator, std::random_access_iterator_tag, int>());
+static_assert(testConst<std::array<int, 10>::const_iterator, std::random_access_iterator_tag, int>());
+static_assert(testMutable<std::string::iterator, std::random_access_iterator_tag, char>());
+static_assert(testConst<std::string::const_iterator, std::random_access_iterator_tag, char>());
+static_assert(testConst<std::string_view::iterator, std::random_access_iterator_tag, char>());
+static_assert(testConst<std::string_view::const_iterator, std::random_access_iterator_tag, char>());
+static_assert(testMutable<std::vector<int>::iterator, std::random_access_iterator_tag, int>());
+static_assert(testConst<std::vector<int>::const_iterator, std::random_access_iterator_tag, int>());
+
+static_assert(testMutable<std::deque<int>::iterator, std::random_access_iterator_tag, int>());
+static_assert(testConst<std::deque<int>::const_iterator, std::random_access_iterator_tag, int>());
+static_assert(testMutable<std::forward_list<int>::iterator, std::forward_iterator_tag, int>());
+static_assert(testConst<std::forward_list<int>::const_iterator, std::forward_iterator_tag, int>());
+static_assert(testMutable<std::list<int>::iterator, std::bidirectional_iterator_tag, int>());
+static_assert(testConst<std::list<int>::const_iterator, std::bidirectional_iterator_tag, int>());
+
+static_assert(testMutable<std::map<int, int>::iterator, std::bidirectional_iterator_tag, std::pair<const int, int>>());
+static_assert(testConst<std::map<int, int>::const_iterator, std::bidirectional_iterator_tag, std::pair<const int, int>>());
+static_assert(testMutable<std::multimap<int, int>::iterator, std::bidirectional_iterator_tag, std::pair<const int, int>>());
+static_assert(testConst<std::multimap<int, int>::const_iterator, std::bidirectional_iterator_tag, std::pair<const int, int>>());
+
+static_assert(testConst<std::set<int>::iterator, std::bidirectional_iterator_tag, int>());
+static_assert(testConst<std::set<int>::const_iterator, std::bidirectional_iterator_tag, int>());
+static_assert(testConst<std::multiset<int>::iterator, std::bidirectional_iterator_tag, int>());
+static_assert(testConst<std::multiset<int>::const_iterator, std::bidirectional_iterator_tag, int>());
+
+#ifdef _MSVC_STL_VERSION
+using unordered_iterator_category = std::bidirectional_iterator_tag;
+#else // ^^^ MSVC STL / other vvv
+using unordered_iterator_category = std::forward_iterator_tag;
+#endif // _MSVC_STL_VERSION
+
+static_assert(testMutable<std::unordered_map<int, int>::iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testConst<std::unordered_map<int, int>::const_iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testMutable<std::unordered_map<int, int>::local_iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testConst<std::unordered_map<int, int>::const_local_iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testMutable<std::unordered_multimap<int, int>::iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testConst<std::unordered_multimap<int, int>::const_iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testMutable<std::unordered_multimap<int, int>::local_iterator, unordered_iterator_category, std::pair<const int, int>>());
+static_assert(testConst<std::unordered_multimap<int, int>::const_local_iterator, unordered_iterator_category, std::pair<const int, int>>());
+
+static_assert(testConst<std::unordered_set<int>::iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_set<int>::const_iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_set<int>::local_iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_set<int>::const_local_iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_multiset<int>::iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_multiset<int>::const_iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_multiset<int>::local_iterator, unordered_iterator_category, int>());
+static_assert(testConst<std::unordered_multiset<int>::const_local_iterator, unordered_iterator_category, int>());
+
+static_assert(testMutable<std::reverse_iterator<int*>, std::random_access_iterator_tag, int>());
+static_assert(testIOIterator<std::back_insert_iterator<std::vector<int>>, std::output_iterator_tag>());
+static_assert(testIOIterator<std::front_insert_iterator<std::vector<int>>, std::output_iterator_tag>());
+static_assert(testIOIterator<std::insert_iterator<std::vector<int>>, std::output_iterator_tag>());
+static_assert(testConst<std::istream_iterator<int, char>, std::input_iterator_tag, int>());
+
+#if !defined(TEST_HAS_NO_LOCALIZATION)
+// libc++-specific since pointer type is unspecified:
+LIBCPP_STATIC_ASSERT(test<std::istreambuf_iterator<char>, std::input_iterator_tag, char, long long, char, char*>());
+static_assert(test<std::move_iterator<int*>, std::random_access_iterator_tag, int, std::ptrdiff_t, int&&, int*>());
+static_assert(testIOIterator<std::ostream_iterator<int, char>, std::output_iterator_tag>());
+static_assert(testIOIterator<std::ostreambuf_iterator<int, char>, std::output_iterator_tag>());
+static_assert(testConst<std::cregex_iterator, std::forward_iterator_tag, std::cmatch>());
+static_assert(testConst<std::cregex_token_iterator, std::forward_iterator_tag, std::csub_match>());
+#endif // !TEST_HAS_NO_LOCALIZATION
+
+#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(test<std::filesystem::directory_iterator, std::input_iterator_tag, std::filesystem::directory_entry,
+                   std::ptrdiff_t, const std::filesystem::directory_entry&, const std::filesystem::directory_entry*>());
+static_assert(test<std::filesystem::recursive_directory_iterator, std::input_iterator_tag,
+                   std::filesystem::directory_entry, std::ptrdiff_t, const std::filesystem::directory_entry&,
+                   const std::filesystem::directory_entry*>());
+#endif
+
+// Local test iterators.
+
+struct AllMembers {
+  struct iterator_category {};
+  struct value_type {};
+  struct difference_type {};
+  struct reference {};
+  struct pointer {};
+};
+using AllMembersTraits = std::iterator_traits<AllMembers>;
+static_assert(std::same_as<AllMembersTraits::iterator_category, AllMembers::iterator_category>);
+static_assert(std::same_as<AllMembersTraits::value_type, AllMembers::value_type>);
+static_assert(std::same_as<AllMembersTraits::difference_type, AllMembers::difference_type>);
+static_assert(std::same_as<AllMembersTraits::reference, AllMembers::reference>);
+static_assert(std::same_as<AllMembersTraits::pointer, AllMembers::pointer>);
+static_assert(!has_iterator_concept_v<AllMembersTraits>);
+
+struct NoPointerMember {
+  struct iterator_category {};
+  struct value_type {};
+  struct difference_type {};
+  struct reference {};
+  // ignored, because NoPointerMember is not a LegacyInputIterator:
+  value_type* operator->() const;
+};
+using NoPointerMemberTraits = std::iterator_traits<NoPointerMember>;
+static_assert(std::same_as<NoPointerMemberTraits::iterator_category, NoPointerMember::iterator_category>);
+static_assert(std::same_as<NoPointerMemberTraits::value_type, NoPointerMember::value_type>);
+static_assert(std::same_as<NoPointerMemberTraits::difference_type, NoPointerMember::difference_type>);
+static_assert(std::same_as<NoPointerMemberTraits::reference, NoPointerMember::reference>);
+static_assert(std::same_as<NoPointerMemberTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<NoPointerMemberTraits>);
+
+struct IterConcept {
+  struct iterator_category {};
+  struct value_type {};
+  struct difference_type {};
+  struct reference {};
+  struct pointer {};
+  // iterator_traits does NOT pass through the iterator_concept of the type itself.
+  struct iterator_concept {};
+};
+using IterConceptTraits = std::iterator_traits<IterConcept>;
+static_assert(std::same_as<IterConceptTraits::iterator_category, IterConcept::iterator_category>);
+static_assert(std::same_as<IterConceptTraits::value_type, IterConcept::value_type>);
+static_assert(std::same_as<IterConceptTraits::difference_type, IterConcept::difference_type>);
+static_assert(std::same_as<IterConceptTraits::reference, IterConcept::reference>);
+static_assert(std::same_as<IterConceptTraits::pointer, IterConcept::pointer>);
+static_assert(!has_iterator_concept_v<IterConceptTraits>);
+
+struct LegacyInput {
+  struct iterator_category {};
+  struct value_type {};
+  struct reference { operator value_type() const; };
+
+  friend bool operator==(LegacyInput, LegacyInput);
+  reference operator*() const;
+  LegacyInput& operator++();
+  LegacyInput operator++(int);
+};
+template <>
+struct std::incrementable_traits<LegacyInput> {
+  using difference_type = short;
+};
+using LegacyInputTraits = std::iterator_traits<LegacyInput>;
+static_assert(std::same_as<LegacyInputTraits::iterator_category, LegacyInput::iterator_category>);
+static_assert(std::same_as<LegacyInputTraits::value_type, LegacyInput::value_type>);
+static_assert(std::same_as<LegacyInputTraits::difference_type, short>);
+static_assert(std::same_as<LegacyInputTraits::reference, LegacyInput::reference>);
+static_assert(std::same_as<LegacyInputTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyInputTraits>);
+
+struct LegacyInputNoValueType {
+  struct not_value_type {};
+  using difference_type = int; // or any signed integral type
+  struct reference { operator not_value_type&() const; };
+
+  friend bool operator==(LegacyInputNoValueType, LegacyInputNoValueType);
+  reference operator*() const;
+  LegacyInputNoValueType& operator++();
+  LegacyInputNoValueType operator++(int);
+};
+template <>
+struct std::indirectly_readable_traits<LegacyInputNoValueType> {
+  using value_type = LegacyInputNoValueType::not_value_type;
+};
+using LegacyInputNoValueTypeTraits = std::iterator_traits<LegacyInputNoValueType>;
+static_assert(std::same_as<LegacyInputNoValueTypeTraits::iterator_category, std::input_iterator_tag>);
+static_assert(std::same_as<LegacyInputNoValueTypeTraits::value_type, LegacyInputNoValueType::not_value_type>);
+static_assert(std::same_as<LegacyInputNoValueTypeTraits::difference_type, int>);
+static_assert(std::same_as<LegacyInputNoValueTypeTraits::reference, LegacyInputNoValueType::reference>);
+static_assert(std::same_as<LegacyInputNoValueTypeTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyInputNoValueTypeTraits>);
+
+struct LegacyForward {
+  struct not_value_type {};
+
+  friend bool operator==(LegacyForward, LegacyForward);
+  const not_value_type& operator*() const;
+  LegacyForward& operator++();
+  LegacyForward operator++(int);
+};
+template <>
+struct std::indirectly_readable_traits<LegacyForward> {
+  using value_type = LegacyForward::not_value_type;
+};
+template <>
+struct std::incrementable_traits<LegacyForward> {
+  using difference_type = short; // or any signed integral type
+};
+using LegacyForwardTraits = std::iterator_traits<LegacyForward>;
+static_assert(std::same_as<LegacyForwardTraits::iterator_category, std::forward_iterator_tag>);
+static_assert(std::same_as<LegacyForwardTraits::value_type, LegacyForward::not_value_type>);
+static_assert(std::same_as<LegacyForwardTraits::difference_type, short>);
+static_assert(std::same_as<LegacyForwardTraits::reference, const LegacyForward::not_value_type&>);
+static_assert(std::same_as<LegacyForwardTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyForwardTraits>);
+
+struct LegacyBidirectional {
+  struct value_type {};
+
+  friend bool operator==(LegacyBidirectional, LegacyBidirectional);
+  const value_type& operator*() const;
+  LegacyBidirectional& operator++();
+  LegacyBidirectional operator++(int);
+  LegacyBidirectional& operator--();
+  LegacyBidirectional operator--(int);
+  friend short operator-(LegacyBidirectional, LegacyBidirectional);
+};
+using LegacyBidirectionalTraits = std::iterator_traits<LegacyBidirectional>;
+static_assert(std::same_as<LegacyBidirectionalTraits::iterator_category, std::bidirectional_iterator_tag>);
+static_assert(std::same_as<LegacyBidirectionalTraits::value_type, LegacyBidirectional::value_type>);
+static_assert(std::same_as<LegacyBidirectionalTraits::difference_type, short>);
+static_assert(std::same_as<LegacyBidirectionalTraits::reference, const LegacyBidirectional::value_type&>);
+static_assert(std::same_as<LegacyBidirectionalTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyBidirectionalTraits>);
+
+// Almost a random access iterator except it is missing operator-(It, It).
+struct MinusNotDeclaredIter {
+  struct value_type {};
+
+  friend auto operator<=>(MinusNotDeclaredIter, MinusNotDeclaredIter) = default;
+  const value_type& operator*() const;
+  const value_type& operator[](long) const;
+  MinusNotDeclaredIter& operator++();
+  MinusNotDeclaredIter operator++(int);
+  MinusNotDeclaredIter& operator--();
+  MinusNotDeclaredIter operator--(int);
+  MinusNotDeclaredIter& operator+=(long);
+  MinusNotDeclaredIter& operator-=(long);
+
+  // Providing difference_type does not fully compensate for missing operator-(It, It).
+  friend MinusNotDeclaredIter operator-(MinusNotDeclaredIter, int);
+  friend MinusNotDeclaredIter operator+(MinusNotDeclaredIter, int);
+  friend MinusNotDeclaredIter operator+(int, MinusNotDeclaredIter);
+};
+template <>
+struct std::incrementable_traits<MinusNotDeclaredIter> {
+  using difference_type = short;
+};
+using MinusNotDeclaredIterTraits = std::iterator_traits<MinusNotDeclaredIter>;
+static_assert(std::same_as<MinusNotDeclaredIterTraits::iterator_category, std::bidirectional_iterator_tag>);
+static_assert(std::same_as<MinusNotDeclaredIterTraits::value_type, MinusNotDeclaredIter::value_type>);
+static_assert(std::same_as<MinusNotDeclaredIterTraits::difference_type, short>);
+static_assert(std::same_as<MinusNotDeclaredIterTraits::reference, const MinusNotDeclaredIter::value_type&>);
+static_assert(std::same_as<MinusNotDeclaredIterTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<MinusNotDeclaredIterTraits>);
+
+struct WrongSubscriptReturnType {
+  struct value_type {};
+
+  friend auto operator<=>(WrongSubscriptReturnType, WrongSubscriptReturnType) = default;
+
+  // The type of it[n] is not convertible to the type of *it; therefore, this is not random-access.
+  value_type& operator*() const;
+  const value_type& operator[](long) const;
+  WrongSubscriptReturnType& operator++();
+  WrongSubscriptReturnType operator++(int);
+  WrongSubscriptReturnType& operator--();
+  WrongSubscriptReturnType operator--(int);
+  WrongSubscriptReturnType& operator+=(long);
+  WrongSubscriptReturnType& operator-=(long);
+  friend short operator-(WrongSubscriptReturnType, WrongSubscriptReturnType);
+  friend WrongSubscriptReturnType operator-(WrongSubscriptReturnType, int);
+  friend WrongSubscriptReturnType operator+(WrongSubscriptReturnType, int);
+  friend WrongSubscriptReturnType operator+(int, WrongSubscriptReturnType);
+};
+using WrongSubscriptReturnTypeTraits = std::iterator_traits<WrongSubscriptReturnType>;
+static_assert(std::same_as<WrongSubscriptReturnTypeTraits::iterator_category, std::bidirectional_iterator_tag>);
+static_assert(std::same_as<WrongSubscriptReturnTypeTraits::value_type, WrongSubscriptReturnType::value_type>);
+static_assert(std::same_as<WrongSubscriptReturnTypeTraits::difference_type, short>);
+static_assert(std::same_as<WrongSubscriptReturnTypeTraits::reference, WrongSubscriptReturnType::value_type&>);
+static_assert(std::same_as<WrongSubscriptReturnTypeTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<WrongSubscriptReturnTypeTraits>);
+
+struct LegacyRandomAccess {
+  struct value_type {};
+
+  friend bool operator==(LegacyRandomAccess, LegacyRandomAccess);
+  friend bool operator<(LegacyRandomAccess, LegacyRandomAccess);
+  friend bool operator<=(LegacyRandomAccess, LegacyRandomAccess);
+  friend bool operator>(LegacyRandomAccess, LegacyRandomAccess);
+  friend bool operator>=(LegacyRandomAccess, LegacyRandomAccess);
+  const value_type& operator*() const;
+  const value_type& operator[](long) const;
+  LegacyRandomAccess& operator++();
+  LegacyRandomAccess operator++(int);
+  LegacyRandomAccess& operator--();
+  LegacyRandomAccess operator--(int);
+  LegacyRandomAccess& operator+=(long);
+  LegacyRandomAccess& operator-=(long);
+  friend short operator-(LegacyRandomAccess, LegacyRandomAccess);
+  friend LegacyRandomAccess operator-(LegacyRandomAccess, int);
+  friend LegacyRandomAccess operator+(LegacyRandomAccess, int);
+  friend LegacyRandomAccess operator+(int, LegacyRandomAccess);
+};
+using LegacyRandomAccessTraits = std::iterator_traits<LegacyRandomAccess>;
+static_assert(std::same_as<LegacyRandomAccessTraits::iterator_category, std::random_access_iterator_tag>);
+static_assert(std::same_as<LegacyRandomAccessTraits::value_type, LegacyRandomAccess::value_type>);
+static_assert(std::same_as<LegacyRandomAccessTraits::difference_type, short>);
+static_assert(std::same_as<LegacyRandomAccessTraits::reference, const LegacyRandomAccess::value_type&>);
+static_assert(std::same_as<LegacyRandomAccessTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyRandomAccessTraits>);
+
+struct LegacyRandomAccessSpaceship {
+  struct not_value_type {};
+  struct ReferenceConvertible { operator not_value_type&() const; };
+
+  friend auto operator<=>(LegacyRandomAccessSpaceship, LegacyRandomAccessSpaceship) = default;
+  not_value_type& operator*() const;
+  ReferenceConvertible operator[](long) const;
+  LegacyRandomAccessSpaceship& operator++();
+  LegacyRandomAccessSpaceship operator++(int);
+  LegacyRandomAccessSpaceship& operator--();
+  LegacyRandomAccessSpaceship operator--(int);
+  LegacyRandomAccessSpaceship& operator+=(long);
+  LegacyRandomAccessSpaceship& operator-=(long);
+  friend short operator-(LegacyRandomAccessSpaceship, LegacyRandomAccessSpaceship);
+  friend LegacyRandomAccessSpaceship operator-(LegacyRandomAccessSpaceship, int);
+  friend LegacyRandomAccessSpaceship operator+(LegacyRandomAccessSpaceship, int);
+  friend LegacyRandomAccessSpaceship operator+(int, LegacyRandomAccessSpaceship);
+};
+template <>
+struct std::indirectly_readable_traits<LegacyRandomAccessSpaceship> {
+  using value_type = LegacyRandomAccessSpaceship::not_value_type;
+};
+template <>
+struct std::incrementable_traits<LegacyRandomAccessSpaceship> {
+  using difference_type = short; // or any signed integral type
+};
+using LegacyRandomAccessSpaceshipTraits = std::iterator_traits<LegacyRandomAccessSpaceship>;
+static_assert(std::same_as<LegacyRandomAccessSpaceshipTraits::iterator_category, std::random_access_iterator_tag>);
+static_assert(std::same_as<LegacyRandomAccessSpaceshipTraits::value_type, LegacyRandomAccessSpaceship::not_value_type>);
+static_assert(std::same_as<LegacyRandomAccessSpaceshipTraits::difference_type, short>);
+static_assert(std::same_as<LegacyRandomAccessSpaceshipTraits::reference, LegacyRandomAccessSpaceship::not_value_type&>);
+static_assert(std::same_as<LegacyRandomAccessSpaceshipTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyRandomAccessSpaceshipTraits>);
+
+// For output iterators, value_type, difference_type, and reference may be void.
+struct BareLegacyOutput {
+  struct Empty {};
+  Empty operator*() const;
+  BareLegacyOutput& operator++();
+  BareLegacyOutput operator++(int);
+};
+using BareLegacyOutputTraits = std::iterator_traits<BareLegacyOutput>;
+static_assert(std::same_as<BareLegacyOutputTraits::iterator_category, std::output_iterator_tag>);
+static_assert(std::same_as<BareLegacyOutputTraits::value_type, void>);
+static_assert(std::same_as<BareLegacyOutputTraits::difference_type, void>);
+static_assert(std::same_as<BareLegacyOutputTraits::reference, void>);
+static_assert(std::same_as<BareLegacyOutputTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<BareLegacyOutputTraits>);
+
+// The operator- means we get difference_type.
+struct LegacyOutputWithMinus {
+  struct Empty {};
+  Empty operator*() const;
+  LegacyOutputWithMinus& operator++();
+  LegacyOutputWithMinus operator++(int);
+  friend short operator-(LegacyOutputWithMinus, LegacyOutputWithMinus);
+  // Lacking operator==, this is a LegacyIterator but not a LegacyInputIterator.
+};
+using LegacyOutputWithMinusTraits = std::iterator_traits<LegacyOutputWithMinus>;
+static_assert(std::same_as<LegacyOutputWithMinusTraits::iterator_category, std::output_iterator_tag>);
+static_assert(std::same_as<LegacyOutputWithMinusTraits::value_type, void>);
+static_assert(std::same_as<LegacyOutputWithMinusTraits::difference_type, short>);
+static_assert(std::same_as<LegacyOutputWithMinusTraits::reference, void>);
+static_assert(std::same_as<LegacyOutputWithMinusTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyOutputWithMinusTraits>);
+
+struct LegacyOutputWithMemberTypes {
+  struct value_type {}; // ignored
+  struct reference {};  // ignored
+  using difference_type = long;
+
+  friend bool operator==(LegacyOutputWithMemberTypes, LegacyOutputWithMemberTypes);
+  reference operator*() const;
+  LegacyOutputWithMemberTypes& operator++();
+  LegacyOutputWithMemberTypes operator++(int);
+  friend short operator-(LegacyOutputWithMemberTypes, LegacyOutputWithMemberTypes); // ignored
+  // Since (*it) is not convertible to value_type, this is not a LegacyInputIterator.
+};
+using LegacyOutputWithMemberTypesTraits = std::iterator_traits<LegacyOutputWithMemberTypes>;
+static_assert(std::same_as<LegacyOutputWithMemberTypesTraits::iterator_category, std::output_iterator_tag>);
+static_assert(std::same_as<LegacyOutputWithMemberTypesTraits::value_type, void>);
+static_assert(std::same_as<LegacyOutputWithMemberTypesTraits::difference_type, long>);
+static_assert(std::same_as<LegacyOutputWithMemberTypesTraits::reference, void>);
+static_assert(std::same_as<LegacyOutputWithMemberTypesTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<LegacyOutputWithMemberTypesTraits>);
+
+struct LegacyRandomAccessSpecialized {
+  struct not_value_type {};
+
+  friend auto operator<=>(LegacyRandomAccessSpecialized, LegacyRandomAccessSpecialized) = default;
+  not_value_type& operator*() const;
+  not_value_type& operator[](long) const;
+  LegacyRandomAccessSpecialized& operator++();
+  LegacyRandomAccessSpecialized operator++(int);
+  LegacyRandomAccessSpecialized& operator--();
+  LegacyRandomAccessSpecialized operator--(int);
+  LegacyRandomAccessSpecialized& operator+=(long);
+  LegacyRandomAccessSpecialized& operator-=(long);
+  friend long operator-(LegacyRandomAccessSpecialized, LegacyRandomAccessSpecialized);
+  friend LegacyRandomAccessSpecialized operator-(LegacyRandomAccessSpecialized, int);
+  friend LegacyRandomAccessSpecialized operator+(LegacyRandomAccessSpecialized, int);
+  friend LegacyRandomAccessSpecialized operator+(int, LegacyRandomAccessSpecialized);
+};
+template <class I>
+  requires std::same_as<I, LegacyRandomAccessSpecialized>
+struct std::iterator_traits<I>
+{
+  using iterator_category = std::output_iterator_tag;
+  using value_type = short;
+  using difference_type = short;
+  using reference = short&;
+  using pointer = short*;
+};
+using LegacyRandomAccessSpecializedTraits = std::iterator_traits<LegacyRandomAccessSpecialized>;
+static_assert(std::same_as<LegacyRandomAccessSpecializedTraits::iterator_category, std::output_iterator_tag>);
+static_assert(std::same_as<LegacyRandomAccessSpecializedTraits::value_type, short>);
+static_assert(std::same_as<LegacyRandomAccessSpecializedTraits::difference_type, short>);
+static_assert(std::same_as<LegacyRandomAccessSpecializedTraits::reference, short&>);
+static_assert(std::same_as<LegacyRandomAccessSpecializedTraits::pointer, short*>);
+static_assert(!has_iterator_concept_v<LegacyRandomAccessSpecializedTraits>);
+
+// Other test iterators.
+
+using InputTestIteratorTraits = std::iterator_traits<cpp17_input_iterator<int*>>;
+static_assert(std::same_as<InputTestIteratorTraits::iterator_category, std::input_iterator_tag>);
+static_assert(std::same_as<InputTestIteratorTraits::value_type, int>);
+static_assert(std::same_as<InputTestIteratorTraits::difference_type, std::ptrdiff_t>);
+static_assert(std::same_as<InputTestIteratorTraits::reference, int&>);
+static_assert(std::same_as<InputTestIteratorTraits::pointer, int*>);
+static_assert(!has_iterator_concept_v<InputTestIteratorTraits>);
+
+using OutputTestIteratorTraits = std::iterator_traits<cpp17_output_iterator<int*>>;
+static_assert(std::same_as<OutputTestIteratorTraits::iterator_category, std::output_iterator_tag>);
+static_assert(std::same_as<OutputTestIteratorTraits::value_type, void>);
+static_assert(std::same_as<OutputTestIteratorTraits::difference_type, std::ptrdiff_t>);
+static_assert(std::same_as<OutputTestIteratorTraits::reference, int&>);
+static_assert(std::same_as<OutputTestIteratorTraits::pointer, int*>);
+static_assert(!has_iterator_concept_v<OutputTestIteratorTraits>);
+
+using ForwardTestIteratorTraits = std::iterator_traits<forward_iterator<int*>>;
+static_assert(std::same_as<ForwardTestIteratorTraits::iterator_category, std::forward_iterator_tag>);
+static_assert(std::same_as<ForwardTestIteratorTraits::value_type, int>);
+static_assert(std::same_as<ForwardTestIteratorTraits::difference_type, std::ptrdiff_t>);
+static_assert(std::same_as<ForwardTestIteratorTraits::reference, int&>);
+static_assert(std::same_as<ForwardTestIteratorTraits::pointer, int*>);
+static_assert(!has_iterator_concept_v<ForwardTestIteratorTraits>);
+
+using BidirectionalTestIteratorTraits = std::iterator_traits<bidirectional_iterator<int*>>;
+static_assert(std::same_as<BidirectionalTestIteratorTraits::iterator_category, std::bidirectional_iterator_tag>);
+static_assert(std::same_as<BidirectionalTestIteratorTraits::value_type, int>);
+static_assert(std::same_as<BidirectionalTestIteratorTraits::difference_type, std::ptrdiff_t>);
+static_assert(std::same_as<BidirectionalTestIteratorTraits::reference, int&>);
+static_assert(std::same_as<BidirectionalTestIteratorTraits::pointer, int*>);
+static_assert(!has_iterator_concept_v<BidirectionalTestIteratorTraits>);
+
+using RandomAccessTestIteratorTraits = std::iterator_traits<random_access_iterator<int*>>;
+static_assert(std::same_as<RandomAccessTestIteratorTraits::iterator_category, std::random_access_iterator_tag>);
+static_assert(std::same_as<RandomAccessTestIteratorTraits::value_type, int>);
+static_assert(std::same_as<RandomAccessTestIteratorTraits::difference_type, std::ptrdiff_t>);
+static_assert(std::same_as<RandomAccessTestIteratorTraits::reference, int&>);
+static_assert(std::same_as<RandomAccessTestIteratorTraits::pointer, int*>);
+static_assert(!has_iterator_concept_v<RandomAccessTestIteratorTraits>);
+
+using ContiguousTestIteratorTraits = std::iterator_traits<contiguous_iterator<int*>>;
+static_assert(std::same_as<ContiguousTestIteratorTraits::iterator_category, std::contiguous_iterator_tag>);
+static_assert(std::same_as<ContiguousTestIteratorTraits::value_type, int>);
+static_assert(std::same_as<ContiguousTestIteratorTraits::difference_type, std::ptrdiff_t>);
+static_assert(std::same_as<ContiguousTestIteratorTraits::reference, int&>);
+static_assert(std::same_as<ContiguousTestIteratorTraits::pointer, int*>);
+static_assert(!has_iterator_concept_v<ContiguousTestIteratorTraits>);
+
+using Cpp17BasicIteratorTraits = std::iterator_traits<iterator_traits_cpp17_iterator>;
+static_assert(std::same_as<Cpp17BasicIteratorTraits::iterator_category, std::output_iterator_tag>);
+static_assert(std::same_as<Cpp17BasicIteratorTraits::value_type, void>);
+static_assert(std::same_as<Cpp17BasicIteratorTraits::difference_type, void>);
+static_assert(std::same_as<Cpp17BasicIteratorTraits::reference, void>);
+static_assert(std::same_as<Cpp17BasicIteratorTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<Cpp17BasicIteratorTraits>);
+
+using Cpp17InputIteratorTraits = std::iterator_traits<iterator_traits_cpp17_input_iterator>;
+static_assert(std::same_as<Cpp17InputIteratorTraits::iterator_category, std::input_iterator_tag>);
+static_assert(std::same_as<Cpp17InputIteratorTraits::value_type, long>);
+static_assert(std::same_as<Cpp17InputIteratorTraits::difference_type, int>);
+static_assert(std::same_as<Cpp17InputIteratorTraits::reference, int&>);
+static_assert(std::same_as<Cpp17InputIteratorTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<Cpp17InputIteratorTraits>);
+
+using Cpp17ForwardIteratorTraits = std::iterator_traits<iterator_traits_cpp17_forward_iterator>;
+static_assert(std::same_as<Cpp17ForwardIteratorTraits::iterator_category, std::forward_iterator_tag>);
+static_assert(std::same_as<Cpp17ForwardIteratorTraits::value_type, int>);
+static_assert(std::same_as<Cpp17ForwardIteratorTraits::difference_type, int>);
+static_assert(std::same_as<Cpp17ForwardIteratorTraits::reference, int&>);
+static_assert(std::same_as<Cpp17ForwardIteratorTraits::pointer, void>);
+static_assert(!has_iterator_concept_v<Cpp17ForwardIteratorTraits>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/empty.fail.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/empty.fail.cpp
new file mode 100644
index 0000000..f683ae9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/empty.fail.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct iterator_traits
+// {
+// };
+
+#include <iterator>
+#include "test_macros.h"
+
+struct A {};
+struct NotAnIteratorEmpty {};
+
+struct NotAnIteratorNoDifference
+{
+//     typedef int                       difference_type;
+    typedef A                         value_type;
+    typedef A*                        pointer;
+    typedef A&                        reference;
+    typedef std::forward_iterator_tag iterator_category;
+};
+
+struct NotAnIteratorNoValue
+{
+    typedef int                       difference_type;
+//     typedef A                         value_type;
+    typedef A*                        pointer;
+    typedef A&                        reference;
+    typedef std::forward_iterator_tag iterator_category;
+};
+
+struct NotAnIteratorNoPointer
+{
+    typedef int                       difference_type;
+    typedef A                         value_type;
+//     typedef A*                        pointer;
+    typedef A&                        reference;
+    typedef std::forward_iterator_tag iterator_category;
+};
+
+struct NotAnIteratorNoReference
+{
+    typedef int                       difference_type;
+    typedef A                         value_type;
+    typedef A*                        pointer;
+//    typedef A&                        reference;
+    typedef std::forward_iterator_tag iterator_category;
+};
+
+struct NotAnIteratorNoCategory
+{
+    typedef int                       difference_type;
+    typedef A                         value_type;
+    typedef A*                        pointer;
+    typedef A&                        reference;
+//     typedef std::forward_iterator_tag iterator_category;
+};
+
+int main(int, char**)
+{
+    {
+    typedef std::iterator_traits<NotAnIteratorEmpty> T;
+    typedef T::difference_type   DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::value_type        VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::pointer           PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::reference         RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    }
+
+    {
+    typedef std::iterator_traits<NotAnIteratorNoDifference> T;
+    typedef T::difference_type   DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::value_type        VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::pointer           PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::reference         RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    }
+
+    {
+    typedef std::iterator_traits<NotAnIteratorNoValue> T;
+    typedef T::difference_type   DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::value_type        VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::pointer           PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::reference         RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    }
+#if TEST_STD_VER <= 17 || !defined(__cpp_lib_concepts)
+    {
+    typedef std::iterator_traits<NotAnIteratorNoPointer> T;
+    typedef T::difference_type   DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::value_type        VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::pointer           PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::reference         RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    }
+#endif // TEST_STD_VER <= 17 || !defined(__cpp_lib_concepts)
+    {
+    typedef std::iterator_traits<NotAnIteratorNoReference> T;
+    typedef T::difference_type   DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::value_type        VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::pointer           PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::reference         RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    }
+
+    {
+    typedef std::iterator_traits<NotAnIteratorNoCategory> T;
+    typedef T::difference_type   DT; // expected-error-re {{no type named 'difference_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::value_type        VT; // expected-error-re {{no type named 'value_type' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::pointer           PT; // expected-error-re {{no type named 'pointer' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::reference         RT; // expected-error-re {{no type named 'reference' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    typedef T::iterator_category CT; // expected-error-re {{no type named 'iterator_category' in 'std:{{.*}}:iterator_traits<{{.+}}>}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/empty.pass.cpp
new file mode 100644
index 0000000..d9956f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/empty.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class NotAnIterator>
+// struct iterator_traits
+// {
+// };
+
+#include <iterator>
+
+#include "test_macros.h"
+
+struct not_an_iterator
+{
+};
+
+template <class T>
+struct has_value_type
+{
+private:
+    struct two {char lx; char lxx;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::value_type* = 0);
+public:
+    static const bool value = sizeof(test<T>(0)) == 1;
+};
+
+int main(int, char**)
+{
+    typedef std::iterator_traits<not_an_iterator> It;
+    static_assert(!(has_value_type<It>::value), "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/iter_reference_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/iter_reference_t.compile.pass.cpp
new file mode 100644
index 0000000..d62236d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/iter_reference_t.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// using iter_reference_t = decltype(*declval<T&>());
+
+#include <iterator>
+
+#include <concepts>
+
+#include "test_iterators.h"
+
+static_assert(std::same_as<std::iter_reference_t<cpp17_input_iterator<int*> >, int&>);
+static_assert(std::same_as<std::iter_reference_t<forward_iterator<int*> >, int&>);
+static_assert(std::same_as<std::iter_reference_t<bidirectional_iterator<int*> >, int&>);
+static_assert(std::same_as<std::iter_reference_t<random_access_iterator<int*> >, int&>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/iterator.pass.cpp
new file mode 100644
index 0000000..fc9d5d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/iterator.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class Iter>
+// struct iterator_traits
+// {
+//   typedef typename Iter::difference_type difference_type;
+//   typedef typename Iter::value_type value_type;
+//   typedef typename Iter::pointer pointer;
+//   typedef typename Iter::reference reference;
+//   typedef typename Iter::iterator_category iterator_category;
+// };
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+struct test_iterator
+{
+    typedef int                       difference_type;
+    typedef A                         value_type;
+    typedef A*                        pointer;
+    typedef A&                        reference;
+    typedef std::forward_iterator_tag iterator_category;
+};
+
+int main(int, char**)
+{
+    typedef std::iterator_traits<test_iterator> It;
+    static_assert((std::is_same<It::difference_type, int>::value), "");
+    static_assert((std::is_same<It::value_type, A>::value), "");
+    static_assert((std::is_same<It::pointer, A*>::value), "");
+    static_assert((std::is_same<It::reference, A&>::value), "");
+    static_assert((std::is_same<It::iterator_category, std::forward_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/pointer.pass.cpp
new file mode 100644
index 0000000..4cf214a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/pointer.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class T>
+// struct iterator_traits<T*>
+// {
+//   typedef ptrdiff_t                  difference_type;
+//   typedef T                          value_type;
+//   typedef T*                         pointer;
+//   typedef T&                         reference;
+//   typedef random_access_iterator_tag iterator_category;
+//   typedef contiguous_iterator_tag iterator_category; // C++20
+// };
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    typedef std::iterator_traits<A*> It;
+    static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<It::value_type, A>::value), "");
+    static_assert((std::is_same<It::pointer, A*>::value), "");
+    static_assert((std::is_same<It::reference, A&>::value), "");
+    static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag);
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/volatile_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/volatile_pointer.pass.cpp
new file mode 100644
index 0000000..c6d5dfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/iterator.traits/volatile_pointer.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class T>
+// struct iterator_traits<const T*>
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    typedef std::iterator_traits<volatile A*> It;
+    static_assert((std::is_same<It::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<It::value_type, A>::value), "");
+    static_assert((std::is_same<It::pointer, volatile A*>::value), "");
+    static_assert((std::is_same<It::reference, volatile A&>::value), "");
+    static_assert((std::is_same<It::iterator_category, std::random_access_iterator_tag>::value), "");
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(It::iterator_concept, std::contiguous_iterator_tag);
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/constraints.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/constraints.verify.cpp
new file mode 100644
index 0000000..7a2d22e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/constraints.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::advance
+// Make sure we're SFINAE-friendly when the template argument constraints are not met.
+
+#include <iterator>
+
+#include <memory>
+
+#include "test_iterators.h"
+
+void proper_constraints() {
+  auto p = std::unique_ptr<int>();
+  std::ranges::advance(p, 5); // expected-error {{no matching function for call}}
+  std::ranges::advance(p, p); // expected-error {{no matching function for call}}
+  std::ranges::advance(p, 5, p); // expected-error {{no matching function for call}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_count.pass.cpp
new file mode 100644
index 0000000..cda49ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_count.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::advance(it, n)
+
+#include <iterator>
+
+#include <cassert>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <bool Count, typename It>
+constexpr void check(int* first, std::iter_difference_t<It> n, int* expected) {
+  using Difference = std::iter_difference_t<It>;
+  Difference const M = (expected - first); // expected travel distance (which may be negative)
+  auto abs = [](auto x) { return x < 0 ? -x : x; };
+
+  {
+    It it(first);
+    std::ranges::advance(it, n);
+    assert(base(it) == expected);
+    ASSERT_SAME_TYPE(decltype(std::ranges::advance(it, n)), void);
+  }
+
+  // Count operations
+  if constexpr (Count) {
+    auto it = stride_counting_iterator(It(first));
+    std::ranges::advance(it, n);
+    if constexpr (std::random_access_iterator<It>) {
+      assert(it.stride_count() <= 1);
+    } else {
+      assert(it.stride_count() == abs(M));
+    }
+  }
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  // Check advancing forward
+  for (int n = 0; n != 10; ++n) {
+    check<false, cpp17_input_iterator<int*>>(  range, n, range+n);
+    check<false, cpp20_input_iterator<int*>>(  range, n, range+n);
+    check<true,  forward_iterator<int*>>(      range, n, range+n);
+    check<true,  bidirectional_iterator<int*>>(range, n, range+n);
+    check<true,  random_access_iterator<int*>>(range, n, range+n);
+    check<true,  contiguous_iterator<int*>>(   range, n, range+n);
+    check<true,  int*>(                        range, n, range+n);
+    check<true,  cpp17_output_iterator<int*> >(range, n, range+n);
+  }
+
+  // Check advancing backward
+  for (int n = 0; n != 10; ++n) {
+    check<true,  bidirectional_iterator<int*>>(range+9, -n, range+9 - n);
+    check<true,  random_access_iterator<int*>>(range+9, -n, range+9 - n);
+    check<true,  contiguous_iterator<int*>>(   range+9, -n, range+9 - n);
+    check<true,  int*>(                        range+9, -n, range+9 - n);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_count_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_count_sentinel.pass.cpp
new file mode 100644
index 0000000..a1c1564
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_count_sentinel.pass.cpp
@@ -0,0 +1,223 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::advance(it, n, sent)
+
+#include <iterator>
+
+#include <cassert>
+#include <climits>
+#include <concepts>
+#include <cstddef>
+
+#include "test_iterators.h"
+#include "../types.h"
+
+template <bool Count, typename It>
+constexpr void check_forward(int* first, int* last, std::iter_difference_t<It> n, int* expected) {
+  using Difference = std::iter_difference_t<It>;
+  Difference const M = (expected - first); // expected travel distance
+
+  {
+    It it(first);
+    auto sent = sentinel_wrapper(It(last));
+    std::same_as<Difference> auto result = std::ranges::advance(it, n, sent);
+    assert(result == n - M);
+    assert(base(it) == expected);
+  }
+
+  // Count operations
+  if constexpr (Count) {
+    auto it = stride_counting_iterator(It(first));
+    auto sent = sentinel_wrapper(stride_counting_iterator(It(last)));
+    (void)std::ranges::advance(it, n, sent);
+    // We don't have a sized sentinel, so we have to increment one-by-one
+    // regardless of the iterator category.
+    assert(it.stride_count() == M);
+    assert(it.stride_displacement() == M);
+  }
+}
+
+template <typename It>
+constexpr void check_forward_sized_sentinel(int* first, int* last, std::iter_difference_t<It> n, int* expected) {
+  using Difference = std::iter_difference_t<It>;
+  Difference const size = (last - first);
+  Difference const M = (expected - first); // expected travel distance
+
+  {
+    It it(first);
+    auto sent = distance_apriori_sentinel(size);
+    std::same_as<Difference> auto result = std::ranges::advance(it, n, sent);
+    assert(result == n - M);
+    assert(base(it) == expected);
+  }
+
+  // Count operations
+  {
+    auto it = stride_counting_iterator(It(first));
+    auto sent = distance_apriori_sentinel(size);
+    (void)std::ranges::advance(it, n, sent);
+    if constexpr (std::random_access_iterator<It>) {
+      assert(it.stride_count() <= 1);
+      assert(it.stride_displacement() <= 1);
+    } else {
+      assert(it.stride_count() == M);
+      assert(it.stride_displacement() == M);
+    }
+  }
+}
+
+template <typename It>
+constexpr void check_backward(int* first, int* last, std::iter_difference_t<It> n, int* expected) {
+  static_assert(std::random_access_iterator<It>, "This test doesn't support non random access iterators");
+  using Difference = std::iter_difference_t<It>;
+  Difference const M = (expected - last); // expected travel distance (which is negative)
+
+  {
+    It it(last);
+    It sent(first);
+    std::same_as<Difference> auto result = std::ranges::advance(it, n, sent);
+    assert(result == n - M);
+    assert(base(it) == expected);
+  }
+
+  // Count operations
+  {
+    auto it = stride_counting_iterator(It(last));
+    auto sent = stride_counting_iterator(It(first));
+    (void)std::ranges::advance(it, n, sent);
+    assert(it.stride_count() <= 1);
+    assert(it.stride_displacement() <= 1);
+  }
+}
+
+struct iota_iterator {
+    using difference_type = int;
+    using value_type = int;
+
+    constexpr int operator*() const { return x; }
+    constexpr iota_iterator& operator++() { ++x; return *this; }
+    constexpr iota_iterator operator++(int) { ++x; return iota_iterator{x - 1}; }
+    constexpr bool operator==(const iota_iterator&) const = default;
+    constexpr int operator-(const iota_iterator& that) const { return x - that.x; }
+    constexpr iota_iterator& operator--() { --x; return *this; }
+    constexpr iota_iterator operator--(int) { --x; return iota_iterator{x + 1}; }
+
+    int x;
+};
+static_assert(std::bidirectional_iterator<iota_iterator>);
+static_assert(std::sized_sentinel_for<iota_iterator, iota_iterator>);
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  // Basic functionality test: advance forward, bound has the same type
+  {
+    int *p;
+    p = range+5; assert(std::ranges::advance(p, 0, range+7) == 0); assert(p == range+5);
+    p = range+5; assert(std::ranges::advance(p, 1, range+7) == 0); assert(p == range+6);
+    p = range+5; assert(std::ranges::advance(p, 2, range+7) == 0); assert(p == range+7);
+    p = range+5; assert(std::ranges::advance(p, 3, range+7) == 1); assert(p == range+7);
+  }
+
+  // Basic functionality test: advance forward, bound is not the same type and not assignable
+  {
+    int *p;
+    using ConstPtr = const int*;
+    p = range+5; assert(std::ranges::advance(p, 0, ConstPtr(range+7)) == 0); assert(p == range+5);
+    p = range+5; assert(std::ranges::advance(p, 1, ConstPtr(range+7)) == 0); assert(p == range+6);
+    p = range+5; assert(std::ranges::advance(p, 2, ConstPtr(range+7)) == 0); assert(p == range+7);
+    p = range+5; assert(std::ranges::advance(p, 3, ConstPtr(range+7)) == 1); assert(p == range+7);
+  }
+
+  // Basic functionality test: advance forward, bound has different type but assignable
+  {
+    const int *pc;
+    pc = range+5; assert(std::ranges::advance(pc, 0, range+7) == 0); assert(pc == range+5);
+    pc = range+5; assert(std::ranges::advance(pc, 1, range+7) == 0); assert(pc == range+6);
+    pc = range+5; assert(std::ranges::advance(pc, 2, range+7) == 0); assert(pc == range+7);
+    pc = range+5; assert(std::ranges::advance(pc, 3, range+7) == 1); assert(pc == range+7);
+  }
+
+  // Basic functionality test: advance backward, bound has the same type
+  // Note that we don't test advancing backward with a bound of a different type because that's UB
+  {
+    int *p;
+    p = range+5; assert(std::ranges::advance(p, 0, range+3) == 0); assert(p == range+5);
+    p = range+5; assert(std::ranges::advance(p, -1, range+3) == 0); assert(p == range+4);
+    p = range+5; assert(std::ranges::advance(p, -2, range+3) == 0); assert(p == range+3);
+    p = range+5; assert(std::ranges::advance(p, -3, range+3) == -1); assert(p == range+3);
+  }
+
+  // Basic functionality test: advance backward with an array as a sentinel
+  {
+    int* p;
+    p = range+5; assert(std::ranges::advance(p,  0, range) == 0);  assert(p == range+5);
+    p = range+5; assert(std::ranges::advance(p, -1, range) == 0);  assert(p == range+4);
+    p = range+5; assert(std::ranges::advance(p, -5, range) == 0);  assert(p == range);
+    p = range+5; assert(std::ranges::advance(p, -6, range) == -1); assert(p == range);
+  }
+
+  // Exhaustive checks for n and range sizes
+  for (int size = 0; size != 10; ++size) {
+    for (int n = 0; n != 20; ++n) {
+
+      {
+        int* expected = n > size ? range + size : range + n;
+        check_forward<false, cpp17_input_iterator<int*>>(  range, range+size, n, expected);
+        check_forward<false, cpp20_input_iterator<int*>>(  range, range+size, n, expected);
+        check_forward<true,  forward_iterator<int*>>(      range, range+size, n, expected);
+        check_forward<true,  bidirectional_iterator<int*>>(range, range+size, n, expected);
+        check_forward<true,  random_access_iterator<int*>>(range, range+size, n, expected);
+        check_forward<true,  contiguous_iterator<int*>>(   range, range+size, n, expected);
+        check_forward<true,  int*>(                        range, range+size, n, expected);
+
+        check_forward_sized_sentinel<cpp17_input_iterator<int*>>(  range, range+size, n, expected);
+        check_forward_sized_sentinel<cpp20_input_iterator<int*>>(  range, range+size, n, expected);
+        check_forward_sized_sentinel<forward_iterator<int*>>(      range, range+size, n, expected);
+        check_forward_sized_sentinel<bidirectional_iterator<int*>>(range, range+size, n, expected);
+        check_forward_sized_sentinel<random_access_iterator<int*>>(range, range+size, n, expected);
+        check_forward_sized_sentinel<contiguous_iterator<int*>>(   range, range+size, n, expected);
+        check_forward_sized_sentinel<int*>(                        range, range+size, n, expected);
+      }
+
+      {
+        // Note that we can only test ranges::advance with a negative n for iterators that
+        // are sized sentinels for themselves, because ranges::advance is UB otherwise.
+        // In particular, that excludes bidirectional_iterators since those are not sized sentinels.
+        int* expected = n > size ? range : range + size - n;
+        check_backward<random_access_iterator<int*>>(range, range+size, -n, expected);
+        check_backward<contiguous_iterator<int*>>(   range, range+size, -n, expected);
+        check_backward<int*>(                        range, range+size, -n, expected);
+      }
+    }
+  }
+
+  // Regression-test that INT_MIN doesn't cause any undefined behavior
+  {
+    auto i = iota_iterator{+1};
+    assert(std::ranges::advance(i, INT_MIN, iota_iterator{-2}) == INT_MIN+3);
+    assert(i == iota_iterator{-2});
+    i = iota_iterator{+1};
+    assert(std::ranges::advance(i, -2, iota_iterator{INT_MIN+1}) == 0);
+    assert(i == iota_iterator{-1});
+    i = iota_iterator{+1};
+    assert(std::ranges::advance(i, INT_MIN, iota_iterator{INT_MIN+1}) == 0);
+    assert(i == iota_iterator{INT_MIN+1});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_sentinel.pass.cpp
new file mode 100644
index 0000000..2e9a28e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.advance/iterator_sentinel.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::advance(it, sent)
+
+#include <iterator>
+
+#include <cassert>
+#include <cstddef>
+
+#include "../types.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <bool Count, class It>
+constexpr void check_assignable(int* first, int* last, int* expected) {
+  {
+    It it(first);
+    auto sent = assignable_sentinel(It(last));
+    std::ranges::advance(it, sent);
+    ASSERT_SAME_TYPE(decltype(std::ranges::advance(it, sent)), void);
+    assert(base(it) == expected);
+  }
+
+  // Count operations
+  if constexpr (Count) {
+    auto it = stride_counting_iterator(It(first));
+    auto sent = assignable_sentinel(stride_counting_iterator(It(last)));
+    std::ranges::advance(it, sent);
+    assert(base(base(it)) == expected);
+    assert(it.stride_count() == 0); // because we got here by assigning from last, not by incrementing
+  }
+}
+
+template <bool Count, class It>
+constexpr void check_sized_sentinel(int* first, int* last, int* expected) {
+  auto size = (last - first);
+
+  {
+    It it(first);
+    auto sent = distance_apriori_sentinel(size);
+    std::ranges::advance(it, sent);
+    ASSERT_SAME_TYPE(decltype(std::ranges::advance(it, sent)), void);
+    assert(base(it) == expected);
+  }
+
+  // Count operations
+  if constexpr (Count) {
+    auto it = stride_counting_iterator(It(first));
+    auto sent = distance_apriori_sentinel(size);
+    std::ranges::advance(it, sent);
+    if constexpr (std::random_access_iterator<It>) {
+      assert(it.stride_count() == 1);
+    } else {
+      assert(it.stride_count() == size);
+    }
+  }
+}
+
+template <bool Count, class It>
+constexpr void check_sentinel(int* first, int* last, int* expected) {
+  auto size = (last - first);
+
+  {
+    It it(first);
+    auto sent = sentinel_wrapper(It(last));
+    std::ranges::advance(it, sent);
+    ASSERT_SAME_TYPE(decltype(std::ranges::advance(it, sent)), void);
+    assert(base(it) == expected);
+  }
+
+  // Count operations
+  if constexpr (Count) {
+    auto it = stride_counting_iterator(It(first));
+    auto sent = sentinel_wrapper(stride_counting_iterator(It(last)));
+    std::ranges::advance(it, sent);
+    assert(it.stride_count() == size);
+  }
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  for (int n = 0; n != 10; ++n) {
+    check_assignable<false, cpp17_input_iterator<int*>>(  range, range+n, range+n);
+    check_assignable<false, cpp20_input_iterator<int*>>(  range, range+n, range+n);
+    check_assignable<true,  forward_iterator<int*>>(      range, range+n, range+n);
+    check_assignable<true,  bidirectional_iterator<int*>>(range, range+n, range+n);
+    check_assignable<true,  random_access_iterator<int*>>(range, range+n, range+n);
+    check_assignable<true,  contiguous_iterator<int*>>(   range, range+n, range+n);
+    check_assignable<true,  int*>(                        range, range+n, range+n);
+
+    check_sized_sentinel<false, cpp17_input_iterator<int*>>(  range, range+n, range+n);
+    check_sized_sentinel<false, cpp20_input_iterator<int*>>(  range, range+n, range+n);
+    check_sized_sentinel<true,  forward_iterator<int*>>(      range, range+n, range+n);
+    check_sized_sentinel<true,  bidirectional_iterator<int*>>(range, range+n, range+n);
+    check_sized_sentinel<true,  random_access_iterator<int*>>(range, range+n, range+n);
+    check_sized_sentinel<true,  contiguous_iterator<int*>>(   range, range+n, range+n);
+    check_sized_sentinel<true,  int*>(                        range, range+n, range+n);
+
+    check_sentinel<false, cpp17_input_iterator<int*>>(  range, range+n, range+n);
+    check_sentinel<false, cpp20_input_iterator<int*>>(  range, range+n, range+n);
+    check_sentinel<true,  forward_iterator<int*>>(      range, range+n, range+n);
+    check_sentinel<true,  bidirectional_iterator<int*>>(range, range+n, range+n);
+    check_sentinel<true,  random_access_iterator<int*>>(range, range+n, range+n);
+    check_sentinel<true,  contiguous_iterator<int*>>(   range, range+n, range+n);
+    check_sentinel<true,  int*>(                        range, range+n, range+n);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/iterator_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/iterator_sentinel.pass.cpp
new file mode 100644
index 0000000..aa63f3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/iterator_sentinel.pass.cpp
@@ -0,0 +1,238 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I, sentinel_for<I> S>
+//   requires (!sized_sentinel_for<S, I>)
+//     constexpr iter_difference_t<I> ranges::distance(I first, S last);
+//
+// template<class I, sized_sentinel_for<decay_t<I>> S>
+//   constexpr iter_difference_t<I> ranges::distance(I&& first, S last); // TODO: update when LWG3664 is resolved
+
+#include <iterator>
+#include <cassert>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template<class It, class Sent>
+constexpr void test_unsized() {
+  static_assert(std::sentinel_for<Sent, It> && !std::sized_sentinel_for<Sent, It>);
+  int a[3] = {1,2,3};
+  {
+    It first = It(a);
+    auto last = Sent(It(a));
+    assert(std::ranges::distance(first, last) == 0);
+    assert(std::ranges::distance(It(a), last) == 0);
+    assert(std::ranges::distance(first, Sent(It(a))) == 0);
+    assert(std::ranges::distance(It(a), Sent(It(a))) == 0);
+    ASSERT_SAME_TYPE(decltype(std::ranges::distance(It(a), Sent(It(a)))), std::iter_difference_t<It>);
+  }
+  {
+    It first = It(a);
+    auto last = Sent(It(a + 3));
+    assert(std::ranges::distance(first, last) == 3);
+
+    // Test all const/ref-qualifications of both operands.
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<const Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<const Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<const Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<const Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<const Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<const Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<Sent&&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<const Sent&>(last)) == 3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<const Sent&&>(last)) == 3);
+  }
+}
+
+template<class It, class Sent>
+constexpr void test_sized() {
+  static_assert(std::sized_sentinel_for<Sent, It>);
+  int a[] = {1,2,3};
+  {
+    It first = It(a + 3);
+    auto last = Sent(It(a));
+    assert(std::ranges::distance(first, last) == -3);
+
+    // Test all const/ref-qualifications of both operands.
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<const Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&>(first), static_cast<const Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<const Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<It&&>(first), static_cast<const Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<const Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&>(first), static_cast<const Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<Sent&&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<const Sent&>(last)) == -3);
+    assert(std::ranges::distance(static_cast<const It&&>(first), static_cast<const Sent&&>(last)) == -3);
+  }
+  {
+    It first = It(a);
+    auto last = Sent(It(a));
+    assert(std::ranges::distance(first, last) == 0);
+    assert(std::ranges::distance(It(a), last) == 0);
+    assert(std::ranges::distance(first, Sent(It(a))) == 0);
+    assert(std::ranges::distance(It(a), Sent(It(a))) == 0);
+    ASSERT_SAME_TYPE(decltype(std::ranges::distance(It(a), Sent(It(a)))), std::iter_difference_t<It>);
+  }
+  {
+    It first = It(a);
+    auto last = Sent(It(a + 3));
+    assert(std::ranges::distance(first, last) == 3);
+    assert(std::ranges::distance(It(a), last) == 3);
+    assert(std::ranges::distance(first, Sent(It(a + 3))) == 3);
+    assert(std::ranges::distance(It(a), Sent(It(a + 3))) == 3);
+  }
+}
+
+struct StrideCounter {
+  int *it_;
+  int *inc_;
+  using value_type = int;
+  using difference_type = int;
+  explicit StrideCounter();
+  constexpr explicit StrideCounter(int *it, int *inc) : it_(it), inc_(inc) {}
+  constexpr auto& operator++() { ++it_; *inc_ += 1; return *this; }
+  StrideCounter operator++(int);
+  int& operator*() const;
+  bool operator==(StrideCounter) const;
+};
+static_assert(std::forward_iterator<StrideCounter>);
+static_assert(!std::sized_sentinel_for<StrideCounter, StrideCounter>);
+
+struct SizedStrideCounter {
+  int *it_;
+  int *minus_;
+  using value_type = int;
+  explicit SizedStrideCounter();
+  constexpr explicit SizedStrideCounter(int *it, int *minus) : it_(it), minus_(minus) {}
+  SizedStrideCounter& operator++();
+  SizedStrideCounter operator++(int);
+  int& operator*() const;
+  bool operator==(SizedStrideCounter) const;
+  constexpr int operator-(SizedStrideCounter rhs) const {
+    *minus_ += 1;
+    return static_cast<int>(it_ - rhs.it_);
+  }
+};
+static_assert(std::forward_iterator<SizedStrideCounter>);
+static_assert(std::sized_sentinel_for<SizedStrideCounter, SizedStrideCounter>);
+
+constexpr void test_stride_counting() {
+  {
+    int a[] = {1, 2, 3};
+    int inc = 0;
+    StrideCounter first(a, &inc);
+    StrideCounter last(a+3, nullptr);
+    std::same_as<int> auto result = std::ranges::distance(first, last);
+    assert(result == 3);
+    assert(inc == 3);
+  }
+  {
+    int a[] = {1, 2, 3};
+    int minus = 0;
+    SizedStrideCounter first(a, &minus);
+    SizedStrideCounter last(a+3, nullptr);
+    std::same_as<int> auto result = std::ranges::distance(first, last);
+    assert(result == 3);
+    assert(minus == 1);
+  }
+}
+
+constexpr bool test() {
+  {
+    int a[] = {1, 2, 3};
+    assert(std::ranges::distance(a, a + 3) == 3);
+    assert(std::ranges::distance(a, a) == 0);
+    assert(std::ranges::distance(a + 3, a) == -3);
+  }
+
+  test_unsized<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_unsized<cpp17_output_iterator<int*>, sentinel_wrapper<cpp17_output_iterator<int*>>>();
+  test_unsized<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_unsized<bidirectional_iterator<int*>, sentinel_wrapper<bidirectional_iterator<int*>>>();
+  test_unsized<random_access_iterator<int*>, sentinel_wrapper<random_access_iterator<int*>>>();
+  test_unsized<contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>>();
+  test_unsized<int*, sentinel_wrapper<int*>>();
+  test_unsized<const int*, sentinel_wrapper<const int*>>();
+  test_unsized<forward_iterator<int*>, forward_iterator<int*>>();
+  test_unsized<bidirectional_iterator<int*>, bidirectional_iterator<int*>>();
+
+  test_sized<cpp17_input_iterator<int*>, sized_sentinel<cpp17_input_iterator<int*>>>();
+  test_sized<cpp20_input_iterator<int*>, sized_sentinel<cpp20_input_iterator<int*>>>();
+  test_sized<cpp17_output_iterator<int*>, sized_sentinel<cpp17_output_iterator<int*>>>();
+  test_sized<forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_sized<bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_sized<random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_sized<contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_sized<int*, sized_sentinel<int*>>();
+  test_sized<const int*, sized_sentinel<const int*>>();
+  test_sized<int*, int*>();
+  test_sized<int*, const int*>();
+  test_sized<random_access_iterator<int*>, random_access_iterator<int*>>();
+  test_sized<contiguous_iterator<int*>, contiguous_iterator<int*>>();
+
+  {
+    using It = cpp20_input_iterator<int*>;  // non-copyable, thus not a sentinel for itself
+    static_assert(!std::is_copy_constructible_v<It>);
+    static_assert(!std::sentinel_for<It, It>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&, It&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&, It&&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&&, It&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&&, It&&>);
+  }
+  {
+    using It = cpp20_input_iterator<int*>;  // non-copyable
+    using Sent = sentinel_wrapper<It>;  // not a sized sentinel
+    static_assert(std::sentinel_for<Sent, It> && !std::sized_sentinel_for<Sent, It>);
+    int a[] = {1,2,3};
+    Sent last = Sent(It(a + 3));
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&, Sent&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&, Sent&&>);
+    assert(std::ranges::distance(It(a), last) == 3);
+    assert(std::ranges::distance(It(a), Sent(It(a + 3))) == 3);
+  }
+  {
+    using It = cpp17_input_iterator<int*>;  // not a sentinel for itself
+    static_assert(!std::sentinel_for<It, It>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&, It&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&, It&&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&&, It&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), It&&, It&&>);
+  }
+
+  // Calling it on a non-iterator or non-sentinel isn't allowed.
+  static_assert(!std::is_invocable_v<decltype(std::ranges::distance), int, int>);
+  static_assert(!std::is_invocable_v<decltype(std::ranges::distance), int*, int>);
+  static_assert(!std::is_invocable_v<decltype(std::ranges::distance), int, int*>);
+  static_assert(!std::is_invocable_v<decltype(std::ranges::distance), int*, char*>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/lwg3664.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/lwg3664.pass.cpp
new file mode 100644
index 0000000..e2258e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/lwg3664.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I, sentinel_for<I> S>
+//   requires (!sized_sentinel_for<S, I>)
+//     constexpr iter_difference_t<I> ranges::distance(I first, S last);
+//
+// template<class I, sized_sentinel_for<decay_t<I>> S>
+//   constexpr iter_difference_t<I> ranges::distance(const I& first, S last);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template<class It>
+struct EvilSentinel {
+  It p_;
+  friend constexpr bool operator==(EvilSentinel s, It p) { return s.p_ == p; }
+  friend constexpr auto operator-(EvilSentinel s, It p) { return s.p_ - p; }
+  friend constexpr auto operator-(It p, EvilSentinel s) { return p - s.p_; }
+  friend constexpr void operator-(EvilSentinel s, int(&)[3]) = delete;
+  friend constexpr void operator-(EvilSentinel s, int(&&)[3]) = delete;
+  friend constexpr void operator-(EvilSentinel s, const int(&)[3]) = delete;
+  friend constexpr void operator-(EvilSentinel s, const int(&&)[3]) = delete;
+};
+static_assert( std::sized_sentinel_for<EvilSentinel<int*>, int*>);
+static_assert(!std::sized_sentinel_for<EvilSentinel<int*>, const int*>);
+static_assert( std::sized_sentinel_for<EvilSentinel<const int*>, int*>);
+static_assert( std::sized_sentinel_for<EvilSentinel<const int*>, const int*>);
+
+constexpr bool test() {
+  {
+    int a[] = {1, 2, 3};
+    assert(std::ranges::distance(a, a + 3) == 3);
+    assert(std::ranges::distance(a, a) == 0);
+    assert(std::ranges::distance(a + 3, a) == -3);
+  }
+  {
+    int a[] = {1, 2, 3};
+    assert(std::ranges::distance(a, EvilSentinel<int*>{a+3}) == 3);
+    assert(std::ranges::distance(a, EvilSentinel<int*>{a}) == 0);
+    assert(std::ranges::distance(a+3, EvilSentinel<int*>{a}) == -3);
+    assert(std::ranges::distance(std::move(a), EvilSentinel<int*>{a+3}) == 3);
+  }
+  {
+    const int a[] = {1, 2, 3};
+    assert(std::ranges::distance(a, EvilSentinel<const int*>{a+3}) == 3);
+    assert(std::ranges::distance(a, EvilSentinel<const int*>{a}) == 0);
+    assert(std::ranges::distance(a+3, EvilSentinel<const int*>{a}) == -3);
+    assert(std::ranges::distance(std::move(a), EvilSentinel<const int*>{a+3}) == 3);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), const int(&)[3], EvilSentinel<int*>>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), const int(&&)[3], EvilSentinel<int*>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/range.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/range.pass.cpp
new file mode 100644
index 0000000..1d5ec94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.distance/range.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<range R>
+//   constexpr range_difference_t<R> ranges::distance(R&& r);
+
+#include <iterator>
+#include <cassert>
+#include <ranges>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template<class It, class Sent>
+constexpr void test_ordinary() {
+  struct R {
+    mutable int a[3] = {1, 2, 3};
+    constexpr It begin() const { return It(a); }
+    constexpr Sent end() const { return Sent(It(a + 3)); }
+  };
+  R r;
+  assert(std::ranges::distance(r) == 3);
+  assert(std::ranges::distance(static_cast<R&&>(r)) == 3);
+  assert(std::ranges::distance(static_cast<const R&>(r)) == 3);
+  assert(std::ranges::distance(static_cast<const R&&>(r)) == 3);
+  ASSERT_SAME_TYPE(decltype(std::ranges::distance(r)), std::ranges::range_difference_t<R>);
+}
+
+constexpr bool test() {
+  {
+    using R = int[3];
+    int a[] = {1, 2, 3};
+    assert(std::ranges::distance(static_cast<R&>(a)) == 3);
+    assert(std::ranges::distance(static_cast<R&&>(a)) == 3);
+    assert(std::ranges::distance(static_cast<const R&>(a)) == 3);
+    assert(std::ranges::distance(static_cast<const R&&>(a)) == 3);
+    ASSERT_SAME_TYPE(decltype(std::ranges::distance(a)), std::ptrdiff_t);
+    ASSERT_SAME_TYPE(decltype(std::ranges::distance(a)), std::ranges::range_difference_t<R>);
+  }
+  {
+    // Unsized range, non-copyable iterator type, rvalue-ref-qualified begin()
+    using It = cpp20_input_iterator<int*>;
+    using Sent = sentinel_wrapper<cpp20_input_iterator<int*>>;
+    using R = std::ranges::subrange<It, Sent, std::ranges::subrange_kind::unsized>;
+
+    int a[] = {1, 2, 3};
+    auto r = R(It(a), Sent(It(a + 3)));
+    assert(std::ranges::distance(r) == 3);
+    assert(std::ranges::distance(static_cast<R&&>(r)) == 3);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), const R&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), const R&&>);
+  }
+  {
+    // Sized range (unsized sentinel type), non-copyable iterator type, rvalue-ref-qualified begin()
+    using It = cpp20_input_iterator<int*>;
+    using Sent = sentinel_wrapper<cpp20_input_iterator<int*>>;
+    using R = std::ranges::subrange<It, Sent, std::ranges::subrange_kind::sized>;
+
+    int a[] = {1, 2, 3};
+    auto r = R(It(a), Sent(It(a + 3)), 3);
+    assert(std::ranges::distance(r) == 3);
+    assert(std::ranges::distance(static_cast<R&&>(r)) == 3);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), const R&>);
+    static_assert(!std::is_invocable_v<decltype(std::ranges::distance), const R&&>);
+  }
+  {
+    // Sized range (sized sentinel type), non-copyable iterator type
+    test_ordinary<cpp20_input_iterator<int*>, sized_sentinel<cpp20_input_iterator<int*>>>();
+  }
+  test_ordinary<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>>();
+  test_ordinary<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>();
+  test_ordinary<cpp17_output_iterator<int*>, sentinel_wrapper<cpp17_output_iterator<int*>>>();
+  test_ordinary<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>();
+  test_ordinary<bidirectional_iterator<int*>, sentinel_wrapper<bidirectional_iterator<int*>>>();
+  test_ordinary<random_access_iterator<int*>, sentinel_wrapper<random_access_iterator<int*>>>();
+  test_ordinary<contiguous_iterator<int*>, sentinel_wrapper<contiguous_iterator<int*>>>();
+  test_ordinary<int*, sentinel_wrapper<int*>>();
+
+  test_ordinary<cpp17_input_iterator<int*>, sized_sentinel<cpp17_input_iterator<int*>>>();
+  test_ordinary<cpp20_input_iterator<int*>, sized_sentinel<cpp20_input_iterator<int*>>>();
+  test_ordinary<cpp17_output_iterator<int*>, sized_sentinel<cpp17_output_iterator<int*>>>();
+  test_ordinary<forward_iterator<int*>, sized_sentinel<forward_iterator<int*>>>();
+  test_ordinary<bidirectional_iterator<int*>, sized_sentinel<bidirectional_iterator<int*>>>();
+  test_ordinary<random_access_iterator<int*>, sized_sentinel<random_access_iterator<int*>>>();
+  test_ordinary<contiguous_iterator<int*>, sized_sentinel<contiguous_iterator<int*>>>();
+  test_ordinary<int*, sized_sentinel<int*>>();
+  test_ordinary<int*, int*>();
+
+  // Calling it on a non-range isn't allowed.
+  static_assert(!std::is_invocable_v<decltype(std::ranges::distance), int>);
+  static_assert(!std::is_invocable_v<decltype(std::ranges::distance), int*>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/constraints.compile.pass.cpp
new file mode 100644
index 0000000..b3f7c75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/constraints.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::next
+// Make sure we're SFINAE-friendly when the template argument constraints are not met.
+
+#include <iterator>
+
+#include <cstddef>
+#include <memory>
+#include <utility>
+#include "test_iterators.h"
+
+template <class ...Args>
+concept has_ranges_next = requires (Args&& ...args) {
+  { std::ranges::next(std::forward<Args>(args)...) };
+};
+
+using It = std::unique_ptr<int>;
+static_assert(!has_ranges_next<It>);
+static_assert(!has_ranges_next<It, std::ptrdiff_t>);
+static_assert(!has_ranges_next<It, It>);
+static_assert(!has_ranges_next<It, std::ptrdiff_t, It>);
+
+// Test the test
+using It2 = forward_iterator<int*>;
+static_assert(has_ranges_next<It2>);
+static_assert(has_ranges_next<It2, std::ptrdiff_t>);
+static_assert(has_ranges_next<It2, std::ptrdiff_t, It2>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator.pass.cpp
new file mode 100644
index 0000000..e604343
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::next(it)
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <class It>
+constexpr void check(int* first, int* expected) {
+  It it(first);
+  std::same_as<It> auto result = std::ranges::next(std::move(it));
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  for (int n = 0; n != 9; ++n) {
+    check<cpp17_input_iterator<int*>>(  range+n, range+n+1);
+    check<cpp20_input_iterator<int*>>(  range+n, range+n+1);
+    check<forward_iterator<int*>>(      range+n, range+n+1);
+    check<bidirectional_iterator<int*>>(range+n, range+n+1);
+    check<random_access_iterator<int*>>(range+n, range+n+1);
+    check<contiguous_iterator<int*>>(   range+n, range+n+1);
+    check<cpp17_output_iterator<int*>>( range+n, range+n+1);
+    check<int*>(                        range+n, range+n+1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_count.pass.cpp
new file mode 100644
index 0000000..94e1397
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_count.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::next(it, n)
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <typename It>
+constexpr void check(int* first, std::iter_difference_t<It> n, int* expected) {
+  It it(first);
+  std::same_as<It> auto result = std::ranges::next(std::move(it), n);
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  // Check next() forward
+  for (int n = 0; n != 10; ++n) {
+    check<cpp17_input_iterator<int*>>(  range, n, range+n);
+    check<cpp20_input_iterator<int*>>(  range, n, range+n);
+    check<forward_iterator<int*>>(      range, n, range+n);
+    check<bidirectional_iterator<int*>>(range, n, range+n);
+    check<random_access_iterator<int*>>(range, n, range+n);
+    check<contiguous_iterator<int*>>(   range, n, range+n);
+    check<int*>(                        range, n, range+n);
+    check<cpp17_output_iterator<int*> >(range, n, range+n);
+  }
+
+  // Check next() backward
+  for (int n = 0; n != 10; ++n) {
+    check<bidirectional_iterator<int*>>(range+9, -n, range+9 - n);
+    check<random_access_iterator<int*>>(range+9, -n, range+9 - n);
+    check<contiguous_iterator<int*>>(   range+9, -n, range+9 - n);
+    check<int*>(                        range+9, -n, range+9 - n);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_count_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_count_sentinel.pass.cpp
new file mode 100644
index 0000000..1f12da2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_count_sentinel.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::next(it, n, bound)
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <typename It>
+constexpr void check(int* first, int* last, std::iter_difference_t<It> n, int* expected) {
+  It it(first);
+  auto sent = sentinel_wrapper(It(last));
+
+  std::same_as<It> auto result = std::ranges::next(std::move(it), n, sent);
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  for (int size = 0; size != 10; ++size) {
+    for (int n = 0; n != 20; ++n) {
+      int* expected = n > size ? range + size : range + n;
+      check<cpp17_input_iterator<int*>>(  range, range+size, n, expected);
+      check<cpp20_input_iterator<int*>>(  range, range+size, n, expected);
+      check<forward_iterator<int*>>(      range, range+size, n, expected);
+      check<bidirectional_iterator<int*>>(range, range+size, n, expected);
+      check<random_access_iterator<int*>>(range, range+size, n, expected);
+      check<contiguous_iterator<int*>>(   range, range+size, n, expected);
+      check<int*>(                        range, range+size, n, expected);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_sentinel.pass.cpp
new file mode 100644
index 0000000..5385816
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.next/iterator_sentinel.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::next(it, bound)
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "../types.h"
+#include "test_iterators.h"
+
+template <typename It>
+constexpr void check_assignable(int* first, int* last, int* expected) {
+  It it(first);
+  auto sent = assignable_sentinel(It(last));
+  It result = std::ranges::next(std::move(it), sent);
+  assert(base(result) == expected);
+}
+
+template <typename It>
+constexpr void check_sized_sentinel(int* first, int* last, int* expected) {
+  auto size = (last - first);
+
+  It it(first);
+  auto sent = distance_apriori_sentinel(size);
+  std::same_as<It> auto result = std::ranges::next(std::move(it), sent);
+  assert(base(result) == expected);
+}
+
+template <typename It>
+constexpr void check_sentinel(int* first, int* last, int* expected) {
+  It it(first);
+  auto sent = sentinel_wrapper(It(last));
+  std::same_as<It> auto result = std::ranges::next(std::move(it), sent);
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  for (int n = 0; n != 10; ++n) {
+    check_assignable<cpp17_input_iterator<int*>>(  range, range+n, range+n);
+    check_assignable<cpp20_input_iterator<int*>>(  range, range+n, range+n);
+    check_assignable<forward_iterator<int*>>(      range, range+n, range+n);
+    check_assignable<bidirectional_iterator<int*>>(range, range+n, range+n);
+    check_assignable<random_access_iterator<int*>>(range, range+n, range+n);
+    check_assignable<contiguous_iterator<int*>>(   range, range+n, range+n);
+    check_assignable<int*>(                        range, range+n, range+n);
+
+    check_sized_sentinel<cpp17_input_iterator<int*>>(  range, range+n, range+n);
+    check_sized_sentinel<cpp20_input_iterator<int*>>(  range, range+n, range+n);
+    check_sized_sentinel<forward_iterator<int*>>(      range, range+n, range+n);
+    check_sized_sentinel<bidirectional_iterator<int*>>(range, range+n, range+n);
+    check_sized_sentinel<random_access_iterator<int*>>(range, range+n, range+n);
+    check_sized_sentinel<contiguous_iterator<int*>>(   range, range+n, range+n);
+    check_sized_sentinel<int*>(                        range, range+n, range+n);
+
+    check_sentinel<cpp17_input_iterator<int*>>(  range, range+n, range+n);
+    check_sentinel<cpp20_input_iterator<int*>>(  range, range+n, range+n);
+    check_sentinel<forward_iterator<int*>>(      range, range+n, range+n);
+    check_sentinel<bidirectional_iterator<int*>>(range, range+n, range+n);
+    check_sentinel<random_access_iterator<int*>>(range, range+n, range+n);
+    check_sentinel<contiguous_iterator<int*>>(   range, range+n, range+n);
+    check_sentinel<int*>(                        range, range+n, range+n);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/constraints.compile.pass.cpp
new file mode 100644
index 0000000..5062a95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/constraints.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::prev
+// Make sure we're SFINAE-friendly when the template argument constraints are not met.
+
+#include <iterator>
+
+#include <cstddef>
+#include <utility>
+#include "test_iterators.h"
+
+template <class ...Args>
+concept has_ranges_prev = requires (Args&& ...args) {
+  { std::ranges::prev(std::forward<Args>(args)...) };
+};
+
+using It = forward_iterator<int*>;
+static_assert(!has_ranges_prev<It>);
+static_assert(!has_ranges_prev<It, std::ptrdiff_t>);
+static_assert(!has_ranges_prev<It, std::ptrdiff_t, It>);
+
+// Test the test
+using It2 = bidirectional_iterator<int*>;
+static_assert(has_ranges_prev<It2>);
+static_assert(has_ranges_prev<It2, std::ptrdiff_t>);
+static_assert(has_ranges_prev<It2, std::ptrdiff_t, It2>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator.pass.cpp
new file mode 100644
index 0000000..a29f7c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::prev(it)
+
+#include <iterator>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template <class It>
+constexpr void check(int* first, int* expected) {
+  It it(first);
+  std::same_as<It> auto result = std::ranges::prev(std::move(it));
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  for (int n = 1; n != 10; ++n) {
+    check<bidirectional_iterator<int*>>(range+n, range+n-1);
+    check<random_access_iterator<int*>>(range+n, range+n-1);
+    check<contiguous_iterator<int*>>(   range+n, range+n-1);
+    check<int*>(                        range+n, range+n-1);
+  }
+
+  return true;
+}
+
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator_count.pass.cpp
new file mode 100644
index 0000000..ad7e625
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator_count.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::prev(it, n)
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <typename It>
+constexpr void check(int* first, std::iter_difference_t<It> n, int* expected) {
+  It it(first);
+  std::same_as<It> auto result = std::ranges::prev(std::move(it), n);
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  // Check prev() forward
+  for (int n = 0; n != 10; ++n) {
+    check<bidirectional_iterator<int*>>(range+n, n, range);
+    check<random_access_iterator<int*>>(range+n, n, range);
+    check<contiguous_iterator<int*>>(   range+n, n, range);
+    check<int*>(                        range+n, n, range);
+  }
+
+  // Check prev() backward
+  for (int n = 0; n != 10; ++n) {
+    check<bidirectional_iterator<int*>>(range, -n, range+n);
+    check<random_access_iterator<int*>>(range, -n, range+n);
+    check<contiguous_iterator<int*>>(   range, -n, range+n);
+    check<int*>(                        range, -n, range+n);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator_count_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator_count_sentinel.pass.cpp
new file mode 100644
index 0000000..0e1bb41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/range.iter.ops.prev/iterator_count_sentinel.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ranges::prev(it, n, bound)
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <typename It>
+constexpr void check(int* first, int* last, std::iter_difference_t<It> n, int* expected) {
+  It it(last);
+  It sent(first); // for std::ranges::prev, the sentinel *must* have the same type as the iterator
+
+  std::same_as<It> auto result = std::ranges::prev(std::move(it), n, std::move(sent));
+  assert(base(result) == expected);
+}
+
+constexpr bool test() {
+  int range[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+
+  for (int size = 0; size != 10; ++size) {
+    for (int n = 0; n != 20; ++n) {
+      int* expected = n > size ? range : range + size - n;
+      check<bidirectional_iterator<int*>>(range, range+size, n, expected);
+      check<random_access_iterator<int*>>(range, range+size, n, expected);
+      check<contiguous_iterator<int*>>(   range, range+size, n, expected);
+      check<int*>(                        range, range+size, n, expected);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/types.h b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/types.h
new file mode 100644
index 0000000..3ab4924
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/range.iter.ops/types.h
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_ITERATORS_ITERATOR_PRIMITIVES_RANGE_ITER_OPS_TYPES_H
+#define TEST_STD_ITERATORS_ITERATOR_PRIMITIVES_RANGE_ITER_OPS_TYPES_H
+
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+#include <utility>
+
+#include "test_iterators.h" // for the fallthrough base() function
+
+class distance_apriori_sentinel {
+public:
+  distance_apriori_sentinel() = default;
+  constexpr explicit distance_apriori_sentinel(std::ptrdiff_t const count) : count_(count) {}
+
+  constexpr bool operator==(std::input_or_output_iterator auto const&) const {
+    assert(false && "difference op should take precedence");
+    return false;
+  }
+
+  friend constexpr std::ptrdiff_t operator-(std::input_or_output_iterator auto const&,
+                                            distance_apriori_sentinel const y) {
+    return -y.count_;
+  }
+
+  friend constexpr std::ptrdiff_t operator-(distance_apriori_sentinel const x,
+                                            std::input_or_output_iterator auto const&) {
+    return x.count_;
+  }
+
+private:
+  std::ptrdiff_t count_ = 0;
+};
+
+// Sentinel type that can be assigned to an iterator. This is to test the cases where the
+// various iterator operations use assignment instead of successive increments/decrements.
+template <class It>
+class assignable_sentinel {
+public:
+    explicit assignable_sentinel() = default;
+    constexpr explicit assignable_sentinel(const It& it) : base_(base(it)) {}
+    constexpr operator It() const { return It(base_); }
+    constexpr bool operator==(const It& other) const { return base_ == base(other); }
+    friend constexpr It base(const assignable_sentinel& s) { return It(s.base_); }
+private:
+    decltype(base(std::declval<It>())) base_;
+};
+
+template <class It>
+assignable_sentinel(const It&) -> assignable_sentinel<It>;
+
+#endif // TEST_STD_ITERATORS_ITERATOR_PRIMITIVES_RANGE_ITER_OPS_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/bidirectional_iterator_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/bidirectional_iterator_tag.pass.cpp
new file mode 100644
index 0000000..06a8d7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/bidirectional_iterator_tag.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct bidirectional_iterator_tag : public forward_iterator_tag {};
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::bidirectional_iterator_tag tag;
+    ((void)tag); // Prevent unused warning
+    static_assert((std::is_base_of<std::forward_iterator_tag,
+                                   std::bidirectional_iterator_tag>::value), "");
+    static_assert((!std::is_base_of<std::output_iterator_tag,
+                                    std::bidirectional_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/contiguous_iterator_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/contiguous_iterator_tag.pass.cpp
new file mode 100644
index 0000000..2191c19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/contiguous_iterator_tag.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct contiguous_iterator_tag : public random_access_iterator_tag {};
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::contiguous_iterator_tag tag;
+    ((void)tag); // Prevent unused warning
+    static_assert((std::is_base_of<std::random_access_iterator_tag,
+                                   std::contiguous_iterator_tag>::value), "");
+    static_assert((!std::is_base_of<std::output_iterator_tag,
+                                    std::contiguous_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/forward_iterator_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/forward_iterator_tag.pass.cpp
new file mode 100644
index 0000000..9c30144
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/forward_iterator_tag.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct forward_iterator_tag: public input_iterator_tag {};
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::forward_iterator_tag tag;
+    ((void)tag); // Prevent unused warning
+    static_assert((std::is_base_of<std::input_iterator_tag,
+                                   std::forward_iterator_tag>::value), "");
+    static_assert((!std::is_base_of<std::output_iterator_tag,
+                                    std::forward_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/input_iterator_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/input_iterator_tag.pass.cpp
new file mode 100644
index 0000000..59389ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/input_iterator_tag.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct input_iterator_tag {};
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::input_iterator_tag tag;
+    ((void)tag); // Prevent unused warning
+    static_assert((!std::is_base_of<std::output_iterator_tag,
+                                    std::input_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/output_iterator_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/output_iterator_tag.pass.cpp
new file mode 100644
index 0000000..e6ec3ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/output_iterator_tag.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct output_iterator_tag {};
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::output_iterator_tag tag;
+    ((void)tag); // Prevent unused warning
+    static_assert((!std::is_base_of<std::input_iterator_tag,
+                                    std::output_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/random_access_iterator_tag.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/random_access_iterator_tag.pass.cpp
new file mode 100644
index 0000000..2f30b4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.primitives/std.iterator.tags/random_access_iterator_tag.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// struct random_access_iterator_tag : public bidirectional_iterator_tag {};
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::random_access_iterator_tag tag;
+    ((void)tag); // Prevent unused warning
+    static_assert((std::is_base_of<std::bidirectional_iterator_tag,
+                                   std::random_access_iterator_tag>::value), "");
+    static_assert((!std::is_base_of<std::output_iterator_tag,
+                                    std::random_access_iterator_tag>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.range/begin-end.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.range/begin-end.pass.cpp
new file mode 100644
index 0000000..e723b0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.range/begin-end.pass.cpp
@@ -0,0 +1,282 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <iterator>
+// template <class C> constexpr auto begin(C& c) -> decltype(c.begin());
+// template <class C> constexpr auto begin(const C& c) -> decltype(c.begin());
+// template <class C> constexpr auto cbegin(const C& c) -> decltype(std::begin(c)); // C++14
+// template <class C> constexpr auto cend(const C& c) -> decltype(std::end(c));     // C++14
+// template <class C> constexpr auto end  (C& c) -> decltype(c.end());
+// template <class C> constexpr auto end  (const C& c) -> decltype(c.end());
+// template <class E> constexpr reverse_iterator<const E*> rbegin(initializer_list<E> il);
+// template <class E> constexpr reverse_iterator<const E*> rend  (initializer_list<E> il);
+//
+// template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin());                 // C++14
+// template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin());           // C++14
+// template <class C> auto constexpr rend(C& c) -> decltype(c.rend());                     // C++14
+// template <class C> constexpr auto rend(const C& c) -> decltype(c.rend());               // C++14
+// template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]);      // C++14
+// template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]);        // C++14
+// template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c));      // C++14
+// template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c));          // C++14
+//
+//  All of these are constexpr in C++17
+
+#include <array>
+#include <cassert>
+#include <initializer_list>
+#include <iterator>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+
+// Throughout this test, we consistently compare against c.begin() instead of c.cbegin()
+// because some STL types (e.g. initializer_list) don't syntactically support il.cbegin().
+// Note that std::cbegin(x) effectively calls std::as_const(x).begin(), not x.cbegin();
+// see the ContainerHijacker test case below.
+
+TEST_CONSTEXPR_CXX14 bool test_arrays_and_initializer_lists_forward()
+{
+  {
+    int a[] = {1, 2, 3};
+    ASSERT_SAME_TYPE(decltype(std::begin(a)), int*);
+    ASSERT_SAME_TYPE(decltype(std::end(a)), int*);
+    assert(std::begin(a) == a);
+    assert(std::end(a) == a + 3);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(decltype(std::cbegin(a)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::cend(a)), const int*);
+    assert(std::cbegin(a) == a);
+    assert(std::cend(a) == a + 3);
+#endif
+
+    const auto& ca = a;
+    ASSERT_SAME_TYPE(decltype(std::begin(ca)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::end(ca)), const int*);
+    assert(std::begin(ca) == a);
+    assert(std::end(ca) == a + 3);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(decltype(std::cbegin(ca)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::cend(ca)), const int*);
+    assert(std::cbegin(ca) == a);
+    assert(std::cend(ca) == a + 3);
+#endif
+  }
+  {
+    std::initializer_list<int> il = {1, 2, 3};
+    ASSERT_SAME_TYPE(decltype(std::begin(il)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::end(il)), const int*);
+    assert(std::begin(il) == il.begin());
+    assert(std::end(il) == il.end());
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(decltype(std::cbegin(il)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::cend(il)), const int*);
+    assert(std::cbegin(il) == il.begin());
+    assert(std::cend(il) == il.end());
+#endif
+
+    const auto& cil = il;
+    ASSERT_SAME_TYPE(decltype(std::begin(cil)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::end(cil)), const int*);
+    assert(std::begin(cil) == il.begin());
+    assert(std::end(cil) == il.end());
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(decltype(std::cbegin(cil)), const int*);
+    ASSERT_SAME_TYPE(decltype(std::cend(cil)), const int*);
+    assert(std::cbegin(cil) == il.begin());
+    assert(std::cend(cil) == il.end());
+#endif
+  }
+  return true;
+}
+
+#if TEST_STD_VER > 11
+TEST_CONSTEXPR_CXX17 bool test_arrays_and_initializer_lists_backward()
+{
+  {
+    int a[] = {1, 2, 3};
+    ASSERT_SAME_TYPE(decltype(std::rbegin(a)), std::reverse_iterator<int*>);
+    ASSERT_SAME_TYPE(decltype(std::rend(a)), std::reverse_iterator<int*>);
+    assert(std::rbegin(a).base() == a + 3);
+    assert(std::rend(a).base() == a);
+    ASSERT_SAME_TYPE(decltype(std::crbegin(a)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::crend(a)), std::reverse_iterator<const int*>);
+    assert(std::crbegin(a).base() == a + 3);
+    assert(std::crend(a).base() == a);
+
+    const auto& ca = a;
+    ASSERT_SAME_TYPE(decltype(std::rbegin(ca)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::rend(ca)), std::reverse_iterator<const int*>);
+    assert(std::rbegin(ca).base() == a + 3);
+    assert(std::rend(ca).base() == a);
+    ASSERT_SAME_TYPE(decltype(std::crbegin(ca)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::crend(ca)), std::reverse_iterator<const int*>);
+    assert(std::crbegin(ca).base() == a + 3);
+    assert(std::crend(ca).base() == a);
+  }
+  {
+    std::initializer_list<int> il = {1, 2, 3};
+    ASSERT_SAME_TYPE(decltype(std::rbegin(il)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::rend(il)), std::reverse_iterator<const int*>);
+    assert(std::rbegin(il).base() == il.end());
+    assert(std::rend(il).base() == il.begin());
+    ASSERT_SAME_TYPE(decltype(std::crbegin(il)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::crend(il)), std::reverse_iterator<const int*>);
+    assert(std::crbegin(il).base() == il.end());
+    assert(std::crend(il).base() == il.begin());
+
+    const auto& cil = il;
+    ASSERT_SAME_TYPE(decltype(std::rbegin(cil)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::rend(cil)), std::reverse_iterator<const int*>);
+    assert(std::rbegin(cil).base() == il.end());
+    assert(std::rend(cil).base() == il.begin());
+    ASSERT_SAME_TYPE(decltype(std::crbegin(cil)), std::reverse_iterator<const int*>);
+    ASSERT_SAME_TYPE(decltype(std::crend(cil)), std::reverse_iterator<const int*>);
+    assert(std::crbegin(cil).base() == il.end());
+    assert(std::crend(cil).base() == il.begin());
+  }
+  return true;
+}
+#endif
+
+template<typename C>
+TEST_CONSTEXPR_CXX14 bool test_container() {
+  C c = {1, 2, 3};
+  ASSERT_SAME_TYPE(decltype(std::begin(c)), typename C::iterator);
+  ASSERT_SAME_TYPE(decltype(std::end(c)), typename C::iterator);
+  assert(std::begin(c) == c.begin());
+  assert(std::end(c) == c.end());
+#if TEST_STD_VER > 11
+  ASSERT_SAME_TYPE(decltype(std::cbegin(c)), typename C::const_iterator);
+  ASSERT_SAME_TYPE(decltype(std::cend(c)), typename C::const_iterator);
+  assert(std::cbegin(c) == c.begin());
+  assert(std::cend(c) == c.end());
+  ASSERT_SAME_TYPE(decltype(std::rbegin(c)), typename C::reverse_iterator);
+  ASSERT_SAME_TYPE(decltype(std::rend(c)), typename C::reverse_iterator);
+  assert(std::rbegin(c).base() == c.end());
+  assert(std::rend(c).base() == c.begin());
+  ASSERT_SAME_TYPE(decltype(std::crbegin(c)), typename C::const_reverse_iterator);
+  ASSERT_SAME_TYPE(decltype(std::crend(c)), typename C::const_reverse_iterator);
+  assert(std::crbegin(c).base() == c.end());
+  assert(std::crend(c).base() == c.begin());
+#endif
+
+  const C& cc = c;
+  ASSERT_SAME_TYPE(decltype(std::begin(cc)), typename C::const_iterator);
+  ASSERT_SAME_TYPE(decltype(std::end(cc)), typename C::const_iterator);
+  assert(std::begin(cc) == c.begin());
+  assert(std::end(cc) == c.end());
+#if TEST_STD_VER > 11
+  ASSERT_SAME_TYPE(decltype(std::cbegin(cc)), typename C::const_iterator);
+  ASSERT_SAME_TYPE(decltype(std::cend(cc)), typename C::const_iterator);
+  assert(std::cbegin(cc) == c.begin());
+  assert(std::cend(cc) == c.end());
+  ASSERT_SAME_TYPE(decltype(std::rbegin(cc)), typename C::const_reverse_iterator);
+  ASSERT_SAME_TYPE(decltype(std::rend(cc)), typename C::const_reverse_iterator);
+  assert(std::rbegin(cc).base() == c.end());
+  assert(std::rend(cc).base() == c.begin());
+  ASSERT_SAME_TYPE(decltype(std::crbegin(cc)), typename C::const_reverse_iterator);
+  ASSERT_SAME_TYPE(decltype(std::crend(cc)), typename C::const_reverse_iterator);
+  assert(std::crbegin(cc).base() == c.end());
+  assert(std::crend(cc).base() == c.begin());
+#endif
+
+  return true;
+}
+
+struct ArrayHijacker {
+  friend constexpr int begin(ArrayHijacker(&)[3]) { return 42; }
+  friend constexpr int end(ArrayHijacker(&)[3]) { return 42; }
+  friend constexpr int begin(const ArrayHijacker(&)[3]) { return 42; }
+  friend constexpr int end(const ArrayHijacker(&)[3]) { return 42; }
+};
+
+struct ContainerHijacker {
+  int *a_;
+  constexpr int *begin() const { return a_; }
+  constexpr int *end() const { return a_ + 3; }
+  constexpr int *rbegin() const { return a_; }
+  constexpr int *rend() const { return a_ + 3; }
+  friend constexpr int begin(ContainerHijacker&) { return 42; }
+  friend constexpr int end(ContainerHijacker&) { return 42; }
+  friend constexpr int begin(const ContainerHijacker&) { return 42; }
+  friend constexpr int end(const ContainerHijacker&) { return 42; }
+  friend constexpr int cbegin(ContainerHijacker&) { return 42; }
+  friend constexpr int cend(ContainerHijacker&) { return 42; }
+  friend constexpr int cbegin(const ContainerHijacker&) { return 42; }
+  friend constexpr int cend(const ContainerHijacker&) { return 42; }
+  friend constexpr int rbegin(ContainerHijacker&) { return 42; }
+  friend constexpr int rend(ContainerHijacker&) { return 42; }
+  friend constexpr int rbegin(const ContainerHijacker&) { return 42; }
+  friend constexpr int rend(const ContainerHijacker&) { return 42; }
+  friend constexpr int crbegin(ContainerHijacker&) { return 42; }
+  friend constexpr int crend(ContainerHijacker&) { return 42; }
+  friend constexpr int crbegin(const ContainerHijacker&) { return 42; }
+  friend constexpr int crend(const ContainerHijacker&) { return 42; }
+};
+
+TEST_CONSTEXPR_CXX17 bool test_adl_proofing() {
+  // https://llvm.org/PR28927
+  {
+    ArrayHijacker a[3] = {};
+    assert(begin(a) == 42);
+    assert(end(a) == 42);
+    assert(std::begin(a) == a);
+    assert(std::end(a) == a + 3);
+#if TEST_STD_VER > 11
+    assert(std::cbegin(a) == a);
+    assert(std::cend(a) == a + 3);
+    assert(std::rbegin(a).base() == a + 3);
+    assert(std::rend(a).base() == a);
+    assert(std::crbegin(a).base() == a + 3);
+    assert(std::crend(a).base() == a);
+#endif
+  }
+  {
+    int a[3] = {};
+    ContainerHijacker c{a};
+    assert(begin(c) == 42);
+    assert(end(c) == 42);
+    assert(std::begin(c) == a);
+    assert(std::end(c) == a + 3);
+#if TEST_STD_VER > 11
+    assert(std::cbegin(c) == a);
+    assert(std::cend(c) == a + 3);
+    assert(std::rbegin(c) == a);
+    assert(std::rend(c) == a + 3);
+    assert(std::crbegin(c) == a);
+    assert(std::crend(c) == a + 3);
+#endif
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test_arrays_and_initializer_lists_forward();
+#if TEST_STD_VER > 11
+  test_arrays_and_initializer_lists_backward();
+#endif
+  test_container<std::array<int, 3>>();
+  test_container<std::list<int>>();
+  test_container<std::vector<int>>();
+  test_adl_proofing();
+
+#if TEST_STD_VER > 11
+  static_assert(test_arrays_and_initializer_lists_forward(), "");
+#endif
+#if TEST_STD_VER > 14
+  static_assert(test_arrays_and_initializer_lists_backward());
+  static_assert(test_container<std::array<int, 3>>());
+  static_assert(test_adl_proofing());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable.compile.pass.cpp
new file mode 100644
index 0000000..b8ea73a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable.compile.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_copyable;
+
+#include <iterator>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+struct CopyOnly {
+  CopyOnly() = default;
+
+  CopyOnly(CopyOnly const&) = default;
+  CopyOnly& operator=(CopyOnly const&) = default;
+
+  CopyOnly(CopyOnly&&) = delete;
+  CopyOnly& operator=(CopyOnly&&) = delete;
+};
+
+// Can copy the underlying objects between pointers.
+static_assert( std::indirectly_copyable<int*, int*>);
+static_assert( std::indirectly_copyable<const int*, int *>);
+
+// Can't copy if the output pointer is const.
+static_assert(!std::indirectly_copyable<int*, const int *>);
+static_assert(!std::indirectly_copyable<const int*, const int *>);
+
+// Can copy from a pointer into an array but arrays aren't considered indirectly copyable-from.
+static_assert( std::indirectly_copyable<int*, int[2]>);
+static_assert(!std::indirectly_copyable<int[2], int*>);
+static_assert(!std::indirectly_copyable<int[2], int[2]>);
+static_assert(!std::indirectly_copyable<int(&)[2], int(&)[2]>);
+
+// Can't copy between non-pointer types.
+static_assert(!std::indirectly_copyable<int*, int>);
+static_assert(!std::indirectly_copyable<int, int*>);
+static_assert(!std::indirectly_copyable<int, int>);
+
+// Check some less common types.
+static_assert(!std::indirectly_movable<void*, void*>);
+static_assert(!std::indirectly_movable<int*, void*>);
+static_assert(!std::indirectly_movable<int(), int()>);
+static_assert(!std::indirectly_movable<int*, int()>);
+static_assert(!std::indirectly_movable<void, void>);
+
+// Can't copy move-only objects.
+static_assert(!std::indirectly_copyable<MoveOnly*, MoveOnly*>);
+static_assert(!std::indirectly_copyable<MoveOnly*, const MoveOnly*>);
+static_assert(!std::indirectly_copyable<const MoveOnly*, MoveOnly*>);
+static_assert(!std::indirectly_copyable<const MoveOnly*, const MoveOnly*>);
+
+// Can copy copy-only objects.
+static_assert( std::indirectly_copyable<CopyOnly*, CopyOnly*>);
+static_assert(!std::indirectly_copyable<CopyOnly*, const CopyOnly*>);
+static_assert( std::indirectly_copyable<const CopyOnly*, CopyOnly*>);
+static_assert(!std::indirectly_copyable<const CopyOnly*, const CopyOnly*>);
+
+template<class T>
+struct PointerTo {
+  using value_type = T;
+  T& operator*() const;
+};
+
+// Can copy through a dereferenceable class.
+static_assert( std::indirectly_copyable<int*, PointerTo<int>>);
+static_assert(!std::indirectly_copyable<int*, PointerTo<const int>>);
+static_assert( std::indirectly_copyable<PointerTo<int>, PointerTo<int>>);
+static_assert(!std::indirectly_copyable<PointerTo<int>, PointerTo<const int>>);
+static_assert( std::indirectly_copyable<CopyOnly*, PointerTo<CopyOnly>>);
+static_assert( std::indirectly_copyable<PointerTo<CopyOnly>, CopyOnly*>);
+static_assert( std::indirectly_copyable<PointerTo<CopyOnly>, PointerTo<CopyOnly>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..9c51483
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable.subsumption.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_copyable;
+
+#include <iterator>
+
+template<std::indirectly_readable I, class O>
+constexpr bool indirectly_copyable_subsumption() {
+  return false;
+}
+
+template<class I, class O>
+  requires std::indirectly_copyable<I, O>
+constexpr bool indirectly_copyable_subsumption() {
+  return true;
+}
+
+static_assert(indirectly_copyable_subsumption<int*, int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable_storable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable_storable.compile.pass.cpp
new file mode 100644
index 0000000..3befcf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable_storable.compile.pass.cpp
@@ -0,0 +1,304 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_copyable_storable;
+
+#include <iterator>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+struct CopyOnly {
+  CopyOnly(CopyOnly&&) = delete;
+  CopyOnly(CopyOnly const&) = default;
+  CopyOnly& operator=(CopyOnly&&) = delete;
+  CopyOnly& operator=(CopyOnly const&) = default;
+  CopyOnly() = default;
+};
+
+template<class T>
+struct PointerTo {
+  using value_type = T;
+  T& operator*() const;
+};
+
+// Copying the underlying object between pointers (or dereferenceable classes) works. This is a non-exhaustive check
+// because this functionality comes from `indirectly_copyable`.
+static_assert( std::indirectly_copyable_storable<int*, int*>);
+static_assert( std::indirectly_copyable_storable<const int*, int*>);
+static_assert(!std::indirectly_copyable_storable<int*, const int*>);
+static_assert(!std::indirectly_copyable_storable<const int*, const int*>);
+static_assert( std::indirectly_copyable_storable<int*, int[2]>);
+static_assert(!std::indirectly_copyable_storable<int[2], int*>);
+static_assert(!std::indirectly_copyable_storable<MoveOnly*, MoveOnly*>);
+static_assert(!std::indirectly_copyable_storable<PointerTo<MoveOnly>, PointerTo<MoveOnly>>);
+// `indirectly_copyable_storable` requires the type to be `copyable`, which in turns requires it to be `movable`.
+static_assert(!std::indirectly_copyable_storable<CopyOnly*, CopyOnly*>);
+static_assert(!std::indirectly_copyable_storable<PointerTo<CopyOnly>, PointerTo<CopyOnly>>);
+
+// The dereference operator returns a different type from `value_type` and the reference type cannot be assigned from a
+// non-const lvalue of `ValueType` (but all other forms of assignment from `ValueType` work).
+struct NoLvalueAssignment {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType const&);
+    ReferenceType& operator=(ValueType&) = delete;
+    ReferenceType& operator=(ValueType&&);
+    ReferenceType& operator=(ValueType const&&);
+  };
+
+  struct ValueType {
+    operator ReferenceType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+static_assert( std::indirectly_writable<NoLvalueAssignment, std::iter_reference_t<NoLvalueAssignment>>);
+static_assert(!std::indirectly_writable<NoLvalueAssignment, std::iter_value_t<NoLvalueAssignment>&>);
+static_assert( std::indirectly_writable<NoLvalueAssignment, const std::iter_value_t<NoLvalueAssignment>&>);
+static_assert( std::indirectly_writable<NoLvalueAssignment, std::iter_value_t<NoLvalueAssignment>&&>);
+static_assert( std::indirectly_writable<NoLvalueAssignment, const std::iter_value_t<NoLvalueAssignment>&&>);
+static_assert(!std::indirectly_copyable_storable<NoLvalueAssignment, NoLvalueAssignment>);
+
+// The dereference operator returns a different type from `value_type` and the reference type cannot be assigned from a
+// const lvalue of `ValueType` (but all other forms of assignment from `ValueType` work).
+struct NoConstLvalueAssignment {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType const&) = delete;
+    ReferenceType& operator=(ValueType&);
+    ReferenceType& operator=(ValueType&&);
+    ReferenceType& operator=(ValueType const&&);
+  };
+
+  struct ValueType {
+    operator ReferenceType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+static_assert( std::indirectly_writable<NoConstLvalueAssignment, std::iter_reference_t<NoConstLvalueAssignment>>);
+static_assert( std::indirectly_writable<NoConstLvalueAssignment, std::iter_value_t<NoConstLvalueAssignment>&>);
+static_assert(!std::indirectly_writable<NoConstLvalueAssignment, const std::iter_value_t<NoConstLvalueAssignment>&>);
+static_assert( std::indirectly_writable<NoConstLvalueAssignment, std::iter_value_t<NoConstLvalueAssignment>&&>);
+static_assert( std::indirectly_writable<NoConstLvalueAssignment, const std::iter_value_t<NoConstLvalueAssignment>&&>);
+static_assert(!std::indirectly_copyable_storable<NoConstLvalueAssignment, NoConstLvalueAssignment>);
+
+// The dereference operator returns a different type from `value_type` and the reference type cannot be assigned from a
+// non-const rvalue of `ValueType` (but all other forms of assignment from `ValueType` work).
+struct NoRvalueAssignment {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType const&);
+    ReferenceType& operator=(ValueType&);
+    ReferenceType& operator=(ValueType&&) = delete;
+    ReferenceType& operator=(ValueType const&&);
+  };
+
+  struct ValueType {
+    operator ReferenceType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+static_assert( std::indirectly_writable<NoRvalueAssignment, std::iter_reference_t<NoRvalueAssignment>>);
+static_assert( std::indirectly_writable<NoRvalueAssignment, std::iter_value_t<NoRvalueAssignment>&>);
+static_assert( std::indirectly_writable<NoRvalueAssignment, const std::iter_value_t<NoRvalueAssignment>&>);
+static_assert(!std::indirectly_writable<NoRvalueAssignment, std::iter_value_t<NoRvalueAssignment>&&>);
+static_assert( std::indirectly_writable<NoRvalueAssignment, const std::iter_value_t<NoRvalueAssignment>&&>);
+static_assert(!std::indirectly_copyable_storable<NoRvalueAssignment, NoRvalueAssignment>);
+
+// The dereference operator returns a different type from `value_type` and the reference type cannot be assigned from a
+// const rvalue of `ValueType` (but all other forms of assignment from `ValueType` work).
+struct NoConstRvalueAssignment {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType const&);
+    ReferenceType& operator=(ValueType&);
+    ReferenceType& operator=(ValueType&&);
+    ReferenceType& operator=(ValueType const&&) = delete;
+  };
+
+  struct ValueType {
+    operator ReferenceType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+static_assert( std::indirectly_writable<NoConstRvalueAssignment, std::iter_reference_t<NoConstRvalueAssignment>>);
+static_assert( std::indirectly_writable<NoConstRvalueAssignment, std::iter_value_t<NoConstRvalueAssignment>&>);
+static_assert( std::indirectly_writable<NoConstRvalueAssignment, const std::iter_value_t<NoConstRvalueAssignment>&>);
+static_assert( std::indirectly_writable<NoConstRvalueAssignment, std::iter_value_t<NoConstRvalueAssignment>&&>);
+static_assert(!std::indirectly_writable<NoConstRvalueAssignment, const std::iter_value_t<NoConstRvalueAssignment>&&>);
+static_assert(!std::indirectly_copyable_storable<NoConstRvalueAssignment, NoConstRvalueAssignment>);
+
+struct DeletedCopyCtor {
+  DeletedCopyCtor(DeletedCopyCtor const&) = delete;
+  DeletedCopyCtor& operator=(DeletedCopyCtor const&) = default;
+};
+
+struct DeletedNonconstCopyCtor {
+  DeletedNonconstCopyCtor(DeletedNonconstCopyCtor const&) = default;
+  DeletedNonconstCopyCtor(DeletedNonconstCopyCtor&) = delete;
+  DeletedNonconstCopyCtor& operator=(DeletedNonconstCopyCtor const&) = default;
+};
+
+struct DeletedMoveCtor {
+  DeletedMoveCtor(DeletedMoveCtor&&) = delete;
+  DeletedMoveCtor& operator=(DeletedMoveCtor&&) = default;
+};
+
+struct DeletedConstMoveCtor {
+  DeletedConstMoveCtor(DeletedConstMoveCtor&&) = default;
+  DeletedConstMoveCtor(DeletedConstMoveCtor const&&) = delete;
+  DeletedConstMoveCtor& operator=(DeletedConstMoveCtor&&) = default;
+};
+
+struct DeletedCopyAssignment {
+  DeletedCopyAssignment(DeletedCopyAssignment const&) = default;
+  DeletedCopyAssignment& operator=(DeletedCopyAssignment const&) = delete;
+};
+
+struct DeletedNonconstCopyAssignment {
+  DeletedNonconstCopyAssignment(DeletedNonconstCopyAssignment const&) = default;
+  DeletedNonconstCopyAssignment& operator=(DeletedNonconstCopyAssignment const&) = default;
+  DeletedNonconstCopyAssignment& operator=(DeletedNonconstCopyAssignment&) = delete;
+};
+
+struct DeletedMoveAssignment {
+  DeletedMoveAssignment(DeletedMoveAssignment&&) = default;
+  DeletedMoveAssignment& operator=(DeletedMoveAssignment&&) = delete;
+};
+
+struct DeletedConstMoveAssignment {
+  DeletedConstMoveAssignment(DeletedConstMoveAssignment&&) = default;
+  DeletedConstMoveAssignment& operator=(DeletedConstMoveAssignment&&) = delete;
+};
+
+static_assert(!std::indirectly_copyable_storable<DeletedCopyCtor*, DeletedCopyCtor*>);
+static_assert(!std::indirectly_copyable_storable<DeletedNonconstCopyCtor*, DeletedNonconstCopyCtor*>);
+static_assert(!std::indirectly_copyable_storable<DeletedMoveCtor*, DeletedMoveCtor*>);
+static_assert(!std::indirectly_copyable_storable<DeletedConstMoveCtor*, DeletedConstMoveCtor*>);
+static_assert(!std::indirectly_copyable_storable<DeletedCopyAssignment*, DeletedCopyAssignment*>);
+static_assert(!std::indirectly_copyable_storable<DeletedNonconstCopyAssignment*, DeletedNonconstCopyAssignment*>);
+static_assert(!std::indirectly_copyable_storable<DeletedMoveAssignment*, DeletedMoveAssignment*>);
+static_assert(!std::indirectly_copyable_storable<DeletedConstMoveAssignment*, DeletedConstMoveAssignment*>);
+
+struct InconsistentIterator {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType const&);
+  };
+
+  struct ValueType {
+    ValueType() = default;
+    ValueType(const ReferenceType&);
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+// `ValueType` can be constructed with a `ReferenceType` and assigned to a `ReferenceType`, so it does model
+// `indirectly_copyable_storable`.
+static_assert( std::indirectly_copyable_storable<InconsistentIterator, InconsistentIterator>);
+
+struct CommonType { };
+
+// ReferenceType is a (proxy) reference for ValueType, but ValueType is not constructible from ReferenceType.
+struct NotConstructibleFromRefIn {
+  struct ReferenceType;
+
+  struct ValueType {
+    ValueType(ReferenceType) = delete;
+    operator CommonType&() const;
+  };
+
+  struct ReferenceType {
+    operator CommonType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotConstructibleFromRefIn::ValueType,
+                                   NotConstructibleFromRefIn::ReferenceType, X, Y> {
+  using type = CommonType&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotConstructibleFromRefIn::ReferenceType,
+                                   NotConstructibleFromRefIn::ValueType, X, Y> {
+  using type = CommonType&;
+};
+
+static_assert(std::common_reference_with<NotConstructibleFromRefIn::ValueType&,
+    NotConstructibleFromRefIn::ReferenceType&>);
+
+struct AssignableFromAnything {
+  template<class T>
+  AssignableFromAnything& operator=(T&&);
+};
+
+// A type that can't be constructed from its own reference isn't `indirectly_copyable_storable`, even when assigning it
+// to a type that can be assigned from anything.
+static_assert(!std::indirectly_copyable_storable<NotConstructibleFromRefIn, AssignableFromAnything*>);
+
+// ReferenceType is a (proxy) reference for ValueType, but ValueType is not assignable from ReferenceType.
+struct NotAssignableFromRefIn {
+  struct ReferenceType;
+
+  struct ValueType {
+    ValueType(ReferenceType);
+    ValueType& operator=(ReferenceType) = delete;
+    operator CommonType&() const;
+  };
+
+  struct ReferenceType {
+    operator CommonType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotAssignableFromRefIn::ValueType,
+                                   NotAssignableFromRefIn::ReferenceType, X, Y> {
+  using type = CommonType&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotAssignableFromRefIn::ReferenceType,
+                                   NotAssignableFromRefIn::ValueType, X, Y> {
+  using type = CommonType&;
+};
+
+static_assert(std::common_reference_with<NotAssignableFromRefIn::ValueType&, NotAssignableFromRefIn::ReferenceType&>);
+
+// A type that can't be assigned from its own reference isn't `indirectly_copyable_storable`, even when assigning it
+// to a type that can be assigned from anything.
+static_assert(!std::indirectly_copyable_storable<NotAssignableFromRefIn, AssignableFromAnything*>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable_storable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable_storable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..0a1b660
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.copy/indirectly_copyable_storable.subsumption.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_copyable_storable;
+
+#include <iterator>
+
+template<class I, class O>
+  requires std::indirectly_copyable<I, O>
+constexpr bool indirectly_copyable_storable_subsumption() {
+  return false;
+}
+
+template<class I, class O>
+  requires std::indirectly_copyable_storable<I, O>
+constexpr bool indirectly_copyable_storable_subsumption() {
+  return true;
+}
+
+static_assert(indirectly_copyable_storable_subsumption<int*, int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable.compile.pass.cpp
new file mode 100644
index 0000000..70b786b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_movable;
+
+#include <iterator>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Can move between pointers.
+static_assert( std::indirectly_movable<int*, int*>);
+static_assert( std::indirectly_movable<const int*, int*>);
+static_assert(!std::indirectly_movable<int*, const int*>);
+static_assert( std::indirectly_movable<const int*, int*>);
+
+// Can move from a pointer into an array but arrays aren't considered indirectly movable-from.
+static_assert( std::indirectly_movable<int*, int[2]>);
+static_assert(!std::indirectly_movable<int[2], int*>);
+static_assert(!std::indirectly_movable<int[2], int[2]>);
+static_assert(!std::indirectly_movable<int(&)[2], int(&)[2]>);
+
+// Can't move between non-pointer types.
+static_assert(!std::indirectly_movable<int*, int>);
+static_assert(!std::indirectly_movable<int, int*>);
+static_assert(!std::indirectly_movable<int, int>);
+
+// Check some less common types.
+static_assert(!std::indirectly_movable<void*, void*>);
+static_assert(!std::indirectly_movable<int*, void*>);
+static_assert(!std::indirectly_movable<int(), int()>);
+static_assert(!std::indirectly_movable<int*, int()>);
+static_assert(!std::indirectly_movable<void, void>);
+
+// Can move move-only objects.
+static_assert( std::indirectly_movable<MoveOnly*, MoveOnly*>);
+static_assert(!std::indirectly_movable<MoveOnly*, const MoveOnly*>);
+static_assert(!std::indirectly_movable<const MoveOnly*, const MoveOnly*>);
+static_assert(!std::indirectly_movable<const MoveOnly*, MoveOnly*>);
+
+template<class T>
+struct PointerTo {
+  using value_type = T;
+  T& operator*() const;
+};
+
+// Can copy through a dereferenceable class.
+static_assert( std::indirectly_movable<int*, PointerTo<int>>);
+static_assert(!std::indirectly_movable<int*, PointerTo<const int>>);
+static_assert( std::indirectly_copyable<PointerTo<int>, PointerTo<int>>);
+static_assert(!std::indirectly_copyable<PointerTo<int>, PointerTo<const int>>);
+static_assert( std::indirectly_movable<MoveOnly*, PointerTo<MoveOnly>>);
+static_assert( std::indirectly_movable<PointerTo<MoveOnly>, MoveOnly*>);
+static_assert( std::indirectly_movable<PointerTo<MoveOnly>, PointerTo<MoveOnly>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..3be9147
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable.subsumption.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_movable;
+
+#include <iterator>
+
+template<std::indirectly_readable I, class O>
+constexpr bool indirectly_movable_subsumption() {
+  return false;
+}
+
+template<class I, class O>
+  requires std::indirectly_movable<I, O>
+constexpr bool indirectly_movable_subsumption() {
+  return true;
+}
+
+static_assert(indirectly_movable_subsumption<int*, int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable_storable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable_storable.compile.pass.cpp
new file mode 100644
index 0000000..238e293
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable_storable.compile.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_movable_storable;
+
+#include <iterator>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+template <class T>
+struct PointerTo {
+  using value_type = T;
+  T& operator*() const;
+};
+
+// Copying the underlying object between pointers (or dereferenceable classes) works. This is a non-exhaustive check
+// because this functionality comes from `indirectly_movable`.
+static_assert( std::indirectly_movable_storable<int*, int*>);
+static_assert( std::indirectly_movable_storable<const int*, int*>);
+static_assert(!std::indirectly_movable_storable<int*, const int*>);
+static_assert(!std::indirectly_movable_storable<const int*, const int*>);
+static_assert( std::indirectly_movable_storable<int*, int[2]>);
+static_assert(!std::indirectly_movable_storable<int[2], int*>);
+static_assert( std::indirectly_movable_storable<MoveOnly*, MoveOnly*>);
+static_assert( std::indirectly_movable_storable<PointerTo<MoveOnly>, PointerTo<MoveOnly>>);
+
+// The dereference operator returns a different type from `value_type` and the reference type cannot be assigned from a
+// `ValueType`.
+struct NoAssignment {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType) = delete;
+  };
+
+  // `ValueType` is convertible to `ReferenceType` but not assignable to it. This is implemented by explicitly deleting
+  // `operator=(ValueType)` in `ReferenceType`.
+  struct ValueType {
+    operator ReferenceType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+// The case when `indirectly_writable<iter_rvalue_reference>` but not `indirectly_writable<iter_value>` (you can
+// do `ReferenceType r = ValueType();` but not `r = ValueType();`).
+static_assert( std::indirectly_writable<NoAssignment, std::iter_rvalue_reference_t<NoAssignment>>);
+static_assert(!std::indirectly_writable<NoAssignment, std::iter_value_t<NoAssignment>>);
+static_assert(!std::indirectly_movable_storable<NoAssignment, NoAssignment>);
+
+struct DeletedMoveCtor {
+  DeletedMoveCtor(DeletedMoveCtor&&) = delete;
+  DeletedMoveCtor& operator=(DeletedMoveCtor&&) = default;
+};
+
+struct DeletedMoveAssignment {
+  DeletedMoveAssignment(DeletedMoveAssignment&&) = default;
+  DeletedMoveAssignment& operator=(DeletedMoveAssignment&&) = delete;
+};
+
+static_assert(!std::indirectly_movable_storable<DeletedMoveCtor*, DeletedMoveCtor*>);
+static_assert(!std::indirectly_movable_storable<DeletedMoveAssignment*, DeletedMoveAssignment*>);
+
+struct InconsistentIterator {
+  struct ValueType;
+
+  struct ReferenceType {
+    ReferenceType& operator=(ValueType const&);
+  };
+
+  struct ValueType {
+    ValueType() = default;
+    ValueType(const ReferenceType&);
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+// `ValueType` can be constructed with a `ReferenceType` and assigned to a `ReferenceType`, so it does model
+// `indirectly_movable_storable`.
+static_assert( std::indirectly_movable_storable<InconsistentIterator, InconsistentIterator>);
+
+// ReferenceType is a (proxy) reference for ValueType, but ValueType is not constructible from ReferenceType.
+struct NotConstructibleFromRefIn {
+  struct CommonType { };
+
+  struct ReferenceType {
+    operator CommonType&() const;
+  };
+
+  struct ValueType {
+    ValueType(ReferenceType) = delete;
+    operator CommonType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotConstructibleFromRefIn::ValueType,
+                                   NotConstructibleFromRefIn::ReferenceType, X, Y> {
+  using type = NotConstructibleFromRefIn::CommonType&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotConstructibleFromRefIn::ReferenceType,
+                                   NotConstructibleFromRefIn::ValueType, X, Y> {
+  using type = NotConstructibleFromRefIn::CommonType&;
+};
+
+static_assert(std::common_reference_with<NotConstructibleFromRefIn::ValueType&,
+    NotConstructibleFromRefIn::ReferenceType&>);
+
+struct AssignableFromAnything {
+  template<class T>
+  AssignableFromAnything& operator=(T&&);
+};
+
+// A type that can't be constructed from its own reference isn't `indirectly_movable_storable`, even when assigning it
+// to a type that can be assigned from anything.
+static_assert( std::indirectly_movable_storable<int*, AssignableFromAnything*>);
+static_assert(!std::indirectly_movable_storable<NotConstructibleFromRefIn, AssignableFromAnything*>);
+
+// ReferenceType is a (proxy) reference for ValueType, but ValueType is not assignable from ReferenceType.
+struct NotAssignableFromRefIn {
+  struct CommonType { };
+
+  struct ReferenceType {
+    operator CommonType&() const;
+  };
+
+  struct ValueType {
+    ValueType(ReferenceType);
+    ValueType& operator=(ReferenceType) = delete;
+    operator CommonType&() const;
+  };
+
+  using value_type = ValueType;
+  ReferenceType& operator*() const;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotAssignableFromRefIn::ValueType,
+                                   NotAssignableFromRefIn::ReferenceType, X, Y> {
+  using type = NotAssignableFromRefIn::CommonType&;
+};
+
+template <template <class> class X, template <class> class Y>
+struct std::basic_common_reference<NotAssignableFromRefIn::ReferenceType,
+                                   NotAssignableFromRefIn::ValueType, X, Y> {
+  using type = NotAssignableFromRefIn::CommonType&;
+};
+
+static_assert(std::common_reference_with<NotAssignableFromRefIn::ValueType&, NotAssignableFromRefIn::ReferenceType&>);
+
+// A type that can't be assigned from its own reference isn't `indirectly_movable_storable`, even when assigning it
+// to a type that can be assigned from anything.
+static_assert(!std::indirectly_movable_storable<NotAssignableFromRefIn, AssignableFromAnything*>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable_storable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable_storable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..584af39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.move/indirectly_movable_storable.subsumption.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In, class Out>
+// concept indirectly_movable_storable;
+
+#include <iterator>
+
+template<class I, class O>
+  requires std::indirectly_movable<I, O>
+constexpr bool indirectly_movable_storable_subsumption() {
+  return false;
+}
+
+template<class I, class O>
+  requires std::indirectly_movable_storable<I, O>
+constexpr bool indirectly_movable_storable_subsumption() {
+  return true;
+}
+
+static_assert(indirectly_movable_storable_subsumption<int*, int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.swap/indirectly_swappable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.swap/indirectly_swappable.compile.pass.cpp
new file mode 100644
index 0000000..26dd03b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.swap/indirectly_swappable.compile.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I1, class I2>
+// concept indirectly_swappable;
+
+#include <iterator>
+
+#include "test_macros.h"
+
+template<class T, class ValueType = T>
+struct PointerTo {
+  using value_type = ValueType;
+  T& operator*() const;
+};
+
+static_assert(std::indirectly_swappable<PointerTo<int>>);
+static_assert(std::indirectly_swappable<PointerTo<int>, PointerTo<int>>);
+
+struct B;
+
+struct A {
+  friend void iter_swap(const PointerTo<A>&, const PointerTo<A>&);
+};
+
+// Is indirectly swappable.
+struct B {
+  friend void iter_swap(const PointerTo<B>&, const PointerTo<B>&);
+  friend void iter_swap(const PointerTo<A>&, const PointerTo<B>&);
+  friend void iter_swap(const PointerTo<B>&, const PointerTo<A>&);
+};
+
+// Valid except ranges::iter_swap(i2, i1).
+struct C {
+  friend void iter_swap(const PointerTo<C>&, const PointerTo<C>&);
+  friend void iter_swap(const PointerTo<A>&, const PointerTo<C>&);
+  friend void iter_swap(const PointerTo<C>&, const PointerTo<A>&) = delete;
+};
+
+// Valid except ranges::iter_swap(i1, i2).
+struct D {
+  friend void iter_swap(const PointerTo<D>&, const PointerTo<D>&);
+  friend void iter_swap(const PointerTo<A>&, const PointerTo<D>&) = delete;
+  friend void iter_swap(const PointerTo<D>&, const PointerTo<A>&);
+};
+
+// Valid except ranges::iter_swap(i2, i2).
+struct E {
+  E operator=(const E&) = delete;
+  friend void iter_swap(const PointerTo<E>&, const PointerTo<E>&) = delete;
+  friend void iter_swap(const PointerTo<A>&, const PointerTo<E>&);
+  friend void iter_swap(const PointerTo<E>&, const PointerTo<A>&);
+};
+
+struct F {
+  friend void iter_swap(const PointerTo<F>&, const PointerTo<F>&) = delete;
+};
+
+// Valid except ranges::iter_swap(i1, i1).
+struct G {
+  friend void iter_swap(const PointerTo<G>&, const PointerTo<G>&);
+  friend void iter_swap(const PointerTo<F>&, const PointerTo<G>&);
+  friend void iter_swap(const PointerTo<G>&, const PointerTo<F>&);
+};
+
+
+static_assert( std::indirectly_swappable<PointerTo<A>, PointerTo<B>>);
+static_assert(!std::indirectly_swappable<PointerTo<A>, PointerTo<C>>);
+static_assert(!std::indirectly_swappable<PointerTo<A>, PointerTo<D>>);
+static_assert(!std::indirectly_swappable<PointerTo<A>, PointerTo<E>>);
+static_assert(!std::indirectly_swappable<PointerTo<A>, PointerTo<G>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.swap/indirectly_swappable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.swap/indirectly_swappable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..20701db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.ind.swap/indirectly_swappable.subsumption.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I1, class I2>
+// concept indirectly_swappable;
+
+#include <iterator>
+
+#include <concepts>
+
+template<class I1, class I2>
+  requires std::indirectly_readable<I1> && std::indirectly_readable<I2>
+constexpr bool indirectly_swappable_subsumption() {
+  return false;
+}
+
+template<class I1, class I2>
+  requires std::indirectly_swappable<I1, I2>
+constexpr bool indirectly_swappable_subsumption() {
+  return true;
+}
+
+static_assert(indirectly_swappable_subsumption<int*, int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.mergeable/mergeable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.mergeable/mergeable.compile.pass.cpp
new file mode 100644
index 0000000..bd51d0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.mergeable/mergeable.compile.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I1, class I2, class Out,
+//     class R = ranges::less, class P1 = identity, class P2 = identity>
+//   concept mergeable = see below;                           // since C++20
+
+#include <iterator>
+
+#include <functional>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+using CompDefault = std::ranges::less;
+using CompInt = bool(*)(int, int);
+using ProjDefault = std::identity;
+
+using Input = cpp20_input_iterator<int*>;
+static_assert( std::input_iterator<Input>);
+using InputLong = cpp20_input_iterator<long*>;
+static_assert( std::input_iterator<InputLong>);
+
+using Output = cpp17_output_iterator<int*>;
+static_assert( std::weakly_incrementable<Output>);
+
+static_assert( std::indirectly_copyable<Input, Output>);
+static_assert( std::indirectly_copyable<InputLong, Output>);
+static_assert( std::indirect_strict_weak_order<CompDefault, Input, Input>);
+static_assert( std::indirect_strict_weak_order<CompInt, Input, Input>);
+static_assert( std::indirect_strict_weak_order<CompDefault, Input, InputLong>);
+static_assert( std::indirect_strict_weak_order<CompInt, Input, InputLong>);
+
+// All requirements satisfied.
+static_assert( std::mergeable<Input, Input, Output>);
+static_assert( std::mergeable<Input, Input, Output, CompInt>);
+static_assert( std::mergeable<Input, Input, Output, CompInt, ProjDefault>);
+
+// Non-default projections.
+struct Foo {};
+using ProjFooToInt = int(*)(Foo);
+using ProjFooToLong = long(*)(Foo);
+static_assert( std::indirect_strict_weak_order<CompDefault,
+    std::projected<Foo*, ProjFooToInt>, std::projected<Foo*, ProjFooToLong>>);
+static_assert( std::mergeable<Foo*, Foo*, Foo*, CompDefault, ProjFooToInt, ProjFooToLong>);
+static_assert( std::indirect_strict_weak_order<CompInt,
+    std::projected<Foo*, ProjFooToInt>, std::projected<Foo*, ProjFooToLong>>);
+static_assert( std::mergeable<Foo*, Foo*, Foo*, CompInt, ProjFooToInt, ProjFooToLong>);
+
+// I1 or I2 is not an input iterator.
+static_assert(!std::input_iterator<Output>);
+static_assert(!std::mergeable<Output, Input, Output>);
+static_assert(!std::mergeable<Input, Output, Output>);
+
+// O is not weakly incrementable.
+struct NotWeaklyIncrementable {
+  int& operator*() const;
+};
+
+static_assert(!std::weakly_incrementable<NotWeaklyIncrementable>);
+static_assert( std::indirectly_copyable<Input, NotWeaklyIncrementable>);
+static_assert( std::indirect_strict_weak_order<CompDefault, Input, Input>);
+static_assert(!std::mergeable<Input, Input, NotWeaklyIncrementable>);
+
+// I1 or I2 is not indirectly copyable into O.
+struct AssignableOnlyFromInt {
+  AssignableOnlyFromInt& operator=(int);
+  template <class T>
+  AssignableOnlyFromInt& operator=(T) = delete;
+};
+using OutputOnlyInt = cpp17_output_iterator<AssignableOnlyFromInt*>;
+static_assert( std::weakly_incrementable<OutputOnlyInt>);
+
+static_assert( std::indirectly_copyable<Input, OutputOnlyInt>);
+static_assert(!std::indirectly_copyable<InputLong, OutputOnlyInt>);
+static_assert( std::indirect_strict_weak_order<CompDefault, Input, InputLong>);
+static_assert( std::mergeable<Input, Input, OutputOnlyInt>);
+static_assert(!std::mergeable<Input, InputLong, OutputOnlyInt>);
+static_assert(!std::mergeable<InputLong, Input, OutputOnlyInt>);
+
+// No indirect strict weak order between I1 and I2 (bad comparison functor).
+using GoodComp = bool(*)(int, int);
+static_assert( std::indirect_strict_weak_order<GoodComp, Input, Input>);
+static_assert( std::mergeable<Input, Input, Output, GoodComp>);
+using BadComp = bool(*)(int*, int*);
+static_assert(!std::indirect_strict_weak_order<BadComp, Input, Input>);
+static_assert(!std::mergeable<Input, Input, Output, BadComp>);
+
+// No indirect strict weak order between I1 and I2 (bad projection).
+using ToInt = int(*)(int);
+using ToPtr = int*(*)(int);
+static_assert( std::mergeable<Input, Input, Output, GoodComp, std::identity, std::identity>);
+static_assert( std::mergeable<Input, Input, Output, GoodComp, ToInt, ToInt>);
+static_assert(!std::mergeable<Input, Input, Output, GoodComp, ToPtr, ToInt>);
+static_assert(!std::mergeable<Input, Input, Output, GoodComp, ToInt, ToPtr>);
+static_assert(!std::mergeable<Input, Input, Output, bool(*)(int*, int), ToPtr, ToInt>);
+static_assert(!std::mergeable<Input, Input, Output, bool(*)(int, int*), ToInt, ToPtr>);
+
+// A projection that only supports non-const references and has a non-const `operator()` still has to work.
+struct ProjectionOnlyMutable {
+  int operator()(int&);
+  int operator()(int&&) const = delete;
+};
+static_assert( std::mergeable<Input, Input, Output, CompDefault, ProjectionOnlyMutable, ProjectionOnlyMutable>);
+
+// The output is weakly incrementable but not an output iterator.
+struct WeaklyIncrementable {
+  using value_type = int;
+  using difference_type = int;
+
+  int& operator*() const;
+  WeaklyIncrementable& operator++();
+  // `output_iterator` requires `i++` to return an iterator,
+  // while `weakly_incrementable` requires only that `i++` be well-formed.
+  void operator++(int);
+};
+static_assert( std::weakly_incrementable<WeaklyIncrementable>);
+static_assert( std::indirectly_copyable<int*, WeaklyIncrementable>);
+static_assert(!std::output_iterator<WeaklyIncrementable, int>);
+static_assert( std::mergeable<Input, Input, WeaklyIncrementable>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.mergeable/mergeable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.mergeable/mergeable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..accfcdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.mergeable/mergeable.subsumption.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I1, class I2, class Out,
+//     class R = ranges::less, class P1 = identity, class P2 = identity>
+//   concept mergeable = see below;                           // since C++20
+
+#include <iterator>
+
+#include "test_macros.h"
+
+template <class I1, class I2, class O>
+void test_subsumption() requires std::input_iterator<I1> && std::input_iterator<I2>;
+
+template <class I1, class I2, class O>
+void test_subsumption() requires std::weakly_incrementable<O>;
+
+template <class I1, class I2, class O>
+void test_subsumption() requires std::indirectly_copyable<I1, O> && std::indirectly_copyable<I2, O>;
+
+template <class I1, class I2, class O>
+void test_subsumption() requires std::indirect_strict_weak_order<I1, I2>;
+
+template <class I1, class I2, class O>
+constexpr bool test_subsumption() requires std::mergeable<I1, I2, O> {
+  return true;
+}
+
+static_assert(test_subsumption<int*, int*, int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.permutable/permutable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.permutable/permutable.compile.pass.cpp
new file mode 100644
index 0000000..8c3bef6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.permutable/permutable.compile.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+//   concept permutable = see below; // Since C++20
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+using AllConstraintsSatisfied = forward_iterator<int*>;
+static_assert( std::forward_iterator<AllConstraintsSatisfied>);
+static_assert( std::indirectly_movable_storable<AllConstraintsSatisfied, AllConstraintsSatisfied>);
+static_assert( std::indirectly_swappable<AllConstraintsSatisfied>);
+static_assert( std::permutable<AllConstraintsSatisfied>);
+
+using NotAForwardIterator = cpp20_input_iterator<int*>;
+static_assert(!std::forward_iterator<NotAForwardIterator>);
+static_assert( std::indirectly_movable_storable<NotAForwardIterator, NotAForwardIterator>);
+static_assert( std::indirectly_swappable<NotAForwardIterator>);
+static_assert(!std::permutable<NotAForwardIterator>);
+
+struct NonCopyable {
+  NonCopyable(const NonCopyable&) = delete;
+  NonCopyable& operator=(const NonCopyable&) = delete;
+  friend void swap(NonCopyable&, NonCopyable&);
+};
+using NotIMS = forward_iterator<NonCopyable*>;
+
+static_assert( std::forward_iterator<NotIMS>);
+static_assert(!std::indirectly_movable_storable<NotIMS, NotIMS>);
+static_assert( std::indirectly_swappable<NotIMS>);
+static_assert(!std::permutable<NotIMS>);
+
+// Note: it is impossible for an iterator to satisfy `indirectly_movable_storable` but not `indirectly_swappable`:
+// `indirectly_swappable` requires both iterators to be `indirectly_readable` and for `ranges::iter_swap` to be
+// well-formed for both iterators. `indirectly_movable_storable` also requires the iterator to be `indirectly_readable`.
+// `ranges::iter_swap` is always defined for `indirectly_movable_storable` iterators.
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.permutable/permutable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.permutable/permutable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..82dae0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.permutable/permutable.subsumption.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+//   concept permutable = see below; // Since C++20
+
+#include <iterator>
+
+template<class I> void test_subsumption() requires std::forward_iterator<I>;
+template<class I> void test_subsumption() requires std::indirectly_movable_storable<I, I>;
+template<class I> void test_subsumption() requires std::indirectly_swappable<I, I>;
+template<class I> constexpr bool test_subsumption() requires std::permutable<I> { return true; }
+static_assert(test_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.sortable/sortable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.sortable/sortable.compile.pass.cpp
new file mode 100644
index 0000000..ac9aa9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.sortable/sortable.compile.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I, class R = ranges::less, class P = identity>
+//   concept sortable = see below;                            // since C++20
+
+#include <iterator>
+
+#include <functional>
+
+using CompInt = bool(*)(int, int);
+using CompDefault = std::ranges::less;
+
+using AllConstraintsSatisfied = int*;
+static_assert( std::permutable<AllConstraintsSatisfied>);
+static_assert( std::indirect_strict_weak_order<CompDefault, AllConstraintsSatisfied>);
+static_assert( std::sortable<AllConstraintsSatisfied>);
+static_assert( std::indirect_strict_weak_order<CompInt, AllConstraintsSatisfied>);
+static_assert( std::sortable<AllConstraintsSatisfied, CompInt>);
+
+struct Foo {};
+using Proj = int(*)(Foo);
+static_assert( std::permutable<Foo*>);
+static_assert(!std::indirect_strict_weak_order<CompDefault, Foo*>);
+static_assert( std::indirect_strict_weak_order<CompDefault, std::projected<Foo*, Proj>>);
+static_assert(!std::sortable<Foo*, CompDefault>);
+static_assert( std::sortable<Foo*, CompDefault, Proj>);
+static_assert(!std::indirect_strict_weak_order<CompInt, Foo*>);
+static_assert( std::indirect_strict_weak_order<CompInt, std::projected<Foo*, Proj>>);
+static_assert(!std::sortable<Foo*, CompInt>);
+static_assert( std::sortable<Foo*, CompInt, Proj>);
+
+using NotPermutable = const int*;
+static_assert(!std::permutable<NotPermutable>);
+static_assert( std::indirect_strict_weak_order<CompInt, NotPermutable>);
+static_assert(!std::sortable<NotPermutable, CompInt>);
+
+struct Empty {};
+using NoIndirectStrictWeakOrder = Empty*;
+static_assert( std::permutable<NoIndirectStrictWeakOrder>);
+static_assert(!std::indirect_strict_weak_order<CompInt, NoIndirectStrictWeakOrder>);
+static_assert(!std::sortable<NoIndirectStrictWeakOrder, CompInt>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.sortable/sortable.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.sortable/sortable.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..96ae054
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/alg.req.sortable/sortable.subsumption.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I, class R = ranges::less, class P = identity>
+//   concept sortable = see below;                            // since C++20
+
+#include <iterator>
+
+#include <functional>
+
+template <class I, class R, class P> void test_subsumption() requires std::permutable<I>;
+
+template <class I, class R, class P> void test_subsumption()
+    requires std::indirect_strict_weak_order<R, std::projected<I, P>>;
+
+template <class I, class R, class P> constexpr bool test_subsumption() requires std::sortable<I, R, P> { return true; }
+
+static_assert(test_subsumption<int*, std::ranges::less, std::identity>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/bidirectional.iterators/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/bidirectional.iterators/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/bidirectional.iterators/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/forward.iterators/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/forward.iterators/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/forward.iterators/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_binary_predicate.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_binary_predicate.compile.pass.cpp
new file mode 100644
index 0000000..741aeee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_binary_predicate.compile.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class I1, class I2>
+// concept indirect_binary_predicate;
+
+#include <iterator>
+#include <type_traits>
+
+#include "indirectly_readable.h"
+
+using It1 = IndirectlyReadable<struct Token1>;
+using It2 = IndirectlyReadable<struct Token2>;
+
+template <class I1, class I2>
+struct GoodPredicate {
+    bool operator()(std::iter_value_t<I1>&, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I1>&, std::iter_reference_t<I2>) const;
+    bool operator()(std::iter_reference_t<I1>, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_reference_t<I1>, std::iter_reference_t<I2>) const;
+    bool operator()(std::iter_common_reference_t<I1>, std::iter_common_reference_t<I2>) const;
+};
+
+// Should work when all constraints are satisfied
+static_assert(std::indirect_binary_predicate<GoodPredicate<It1, It2>, It1, It2>);
+static_assert(std::indirect_binary_predicate<bool(*)(int, float), int*, float*>);
+[[maybe_unused]] auto lambda = [](int i, int j) { return i < j; };
+static_assert(std::indirect_binary_predicate<decltype(lambda), int*, int*>);
+
+// Should fail when either of the iterators is not indirectly_readable
+struct NotIndirectlyReadable { };
+static_assert(!std::indirect_binary_predicate<GoodPredicate<It1, NotIndirectlyReadable>, It1, NotIndirectlyReadable>);
+static_assert(!std::indirect_binary_predicate<GoodPredicate<NotIndirectlyReadable, It2>, NotIndirectlyReadable, It2>);
+
+// Should fail when the predicate is not copy constructible
+struct BadPredicate1 {
+    BadPredicate1(BadPredicate1 const&) = delete;
+    template <class T, class U> bool operator()(T const&, U const&) const;
+};
+static_assert(!std::indirect_binary_predicate<BadPredicate1, It1, It2>);
+
+// Should fail when the predicate can't be called with (iter_value_t&, iter_value_t&)
+struct BadPredicate2 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_value_t<It1>&, std::iter_value_t<It2>&) const = delete;
+};
+static_assert(!std::indirect_binary_predicate<BadPredicate2, It1, It2>);
+
+// Should fail when the predicate can't be called with (iter_value_t&, iter_reference_t)
+struct BadPredicate3 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_value_t<It1>&, std::iter_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_binary_predicate<BadPredicate3, It1, It2>);
+
+// Should fail when the predicate can't be called with (iter_reference_t, iter_value_t&)
+struct BadPredicate4 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_reference_t<It1>, std::iter_value_t<It2>&) const = delete;
+};
+static_assert(!std::indirect_binary_predicate<BadPredicate4, It1, It2>);
+
+// Should fail when the predicate can't be called with (iter_reference_t, iter_reference_t)
+struct BadPredicate5 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_reference_t<It1>, std::iter_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_binary_predicate<BadPredicate5, It1, It2>);
+
+// Should fail when the predicate can't be called with (iter_common_reference_t, iter_common_reference_t)
+struct BadPredicate6 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_common_reference_t<It1>, std::iter_common_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_binary_predicate<BadPredicate6, It1, It2>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_equivalence_relation.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_equivalence_relation.compile.pass.cpp
new file mode 100644
index 0000000..0af5def
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_equivalence_relation.compile.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class I1, class I2 = I1>
+// concept indirect_equivalence_relation;
+
+#include <iterator>
+#include <concepts>
+
+#include "indirectly_readable.h"
+
+using It1 = IndirectlyReadable<struct Token1>;
+using It2 = IndirectlyReadable<struct Token2>;
+
+template <class I1, class I2>
+struct GoodRelation {
+    bool operator()(std::iter_value_t<I1>&, std::iter_value_t<I1>&) const;
+    bool operator()(std::iter_value_t<I2>&, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I1>&, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I2>&, std::iter_value_t<I1>&) const;
+
+    bool operator()(std::iter_value_t<I1>&, std::iter_reference_t<I2>) const;
+    bool operator()(std::iter_reference_t<I2>, std::iter_value_t<I1>&) const;
+    bool operator()(std::iter_reference_t<I2>, std::iter_reference_t<I2>) const;
+
+    bool operator()(std::iter_reference_t<I1>, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I2>&, std::iter_reference_t<I1>) const;
+    bool operator()(std::iter_reference_t<I1>, std::iter_reference_t<I1>) const;
+
+    bool operator()(std::iter_reference_t<I1>, std::iter_reference_t<I2>) const;
+    bool operator()(std::iter_reference_t<I2>, std::iter_reference_t<I1>) const;
+
+    bool operator()(std::iter_common_reference_t<I1>, std::iter_common_reference_t<I1>) const;
+    bool operator()(std::iter_common_reference_t<I2>, std::iter_common_reference_t<I2>) const;
+    bool operator()(std::iter_common_reference_t<I1>, std::iter_common_reference_t<I2>) const;
+    bool operator()(std::iter_common_reference_t<I2>, std::iter_common_reference_t<I1>) const;
+};
+
+// Should work when all constraints are satisfied
+static_assert(std::indirect_equivalence_relation<GoodRelation<It1, It2>, It1, It2>);
+static_assert(std::indirect_equivalence_relation<bool(*)(int, long), int*, long*>);
+[[maybe_unused]] auto lambda = [](int i, long j) { return i == j; };
+static_assert(std::indirect_equivalence_relation<decltype(lambda), int*, long*>);
+
+// Should fail when either of the iterators is not indirectly_readable
+struct NotIndirectlyReadable { };
+static_assert(!std::indirect_equivalence_relation<GoodRelation<It1, NotIndirectlyReadable>, It1, NotIndirectlyReadable>);
+static_assert(!std::indirect_equivalence_relation<GoodRelation<NotIndirectlyReadable, It2>, NotIndirectlyReadable, It2>);
+
+// Should fail when the function is not copy constructible
+struct BadRelation1 {
+    BadRelation1(BadRelation1 const&) = delete;
+    template <class T, class U> bool operator()(T const&, U const&) const;
+};
+static_assert(!std::indirect_equivalence_relation<BadRelation1, It1, It2>);
+
+// Should fail when the function can't be called with (iter_value_t&, iter_value_t&)
+struct BadRelation2 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_value_t<It1>&, std::iter_value_t<It2>&) const = delete;
+};
+static_assert(!std::indirect_equivalence_relation<BadRelation2, It1, It2>);
+
+// Should fail when the function can't be called with (iter_value_t&, iter_reference_t)
+struct BadRelation3 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_value_t<It1>&, std::iter_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_equivalence_relation<BadRelation3, It1, It2>);
+
+// Should fail when the function can't be called with (iter_reference_t, iter_value_t&)
+struct BadRelation4 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_reference_t<It1>, std::iter_value_t<It2>&) const = delete;
+};
+static_assert(!std::indirect_equivalence_relation<BadRelation4, It1, It2>);
+
+// Should fail when the function can't be called with (iter_reference_t, iter_reference_t)
+struct BadRelation5 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_reference_t<It1>, std::iter_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_equivalence_relation<BadRelation5, It1, It2>);
+
+// Should fail when the function can't be called with (iter_common_reference_t, iter_common_reference_t)
+struct BadRelation6 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_common_reference_t<It1>, std::iter_common_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_equivalence_relation<BadRelation6, It1, It2>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_result_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_result_t.compile.pass.cpp
new file mode 100644
index 0000000..4121170
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_result_t.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// indirect_result_t
+
+#include <iterator>
+#include <concepts>
+
+static_assert(std::same_as<std::indirect_result_t<int (*)(int), int*>, int>);
+static_assert(std::same_as<std::indirect_result_t<double (*)(int const&, float), int const*, float*>, double>);
+
+struct S { };
+static_assert(std::same_as<std::indirect_result_t<S (&)(int), int*>, S>);
+static_assert(std::same_as<std::indirect_result_t<long S::*, S*>, long&>);
+static_assert(std::same_as<std::indirect_result_t<S && (S::*)(), S*>, S&&>);
+static_assert(std::same_as<std::indirect_result_t<int S::* (S::*)(int) const, S*, int*>, int S::*>);
+
+template <class F, class... Is>
+constexpr bool has_indirect_result = requires {
+  typename std::indirect_result_t<F, Is...>;
+};
+
+static_assert(!has_indirect_result<int (*)(int), int>); // int isn't indirectly_readable
+static_assert(!has_indirect_result<int, int*>);         // int isn't invocable
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_strict_weak_order.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_strict_weak_order.compile.pass.cpp
new file mode 100644
index 0000000..5a5360c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_strict_weak_order.compile.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class I1, class I2 = I1>
+// concept indirect_strict_weak_order;
+
+#include <iterator>
+#include <concepts>
+
+#include "indirectly_readable.h"
+
+using It1 = IndirectlyReadable<struct Token1>;
+using It2 = IndirectlyReadable<struct Token2>;
+
+template <class I1, class I2>
+struct GoodOrder {
+    bool operator()(std::iter_value_t<I1>&, std::iter_value_t<I1>&) const;
+    bool operator()(std::iter_value_t<I2>&, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I1>&, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I2>&, std::iter_value_t<I1>&) const;
+
+    bool operator()(std::iter_value_t<I1>&, std::iter_reference_t<I2>) const;
+    bool operator()(std::iter_reference_t<I2>, std::iter_value_t<I1>&) const;
+    bool operator()(std::iter_reference_t<I2>, std::iter_reference_t<I2>) const;
+
+    bool operator()(std::iter_reference_t<I1>, std::iter_value_t<I2>&) const;
+    bool operator()(std::iter_value_t<I2>&, std::iter_reference_t<I1>) const;
+    bool operator()(std::iter_reference_t<I1>, std::iter_reference_t<I1>) const;
+
+    bool operator()(std::iter_reference_t<I1>, std::iter_reference_t<I2>) const;
+    bool operator()(std::iter_reference_t<I2>, std::iter_reference_t<I1>) const;
+
+    bool operator()(std::iter_common_reference_t<I1>, std::iter_common_reference_t<I1>) const;
+    bool operator()(std::iter_common_reference_t<I2>, std::iter_common_reference_t<I2>) const;
+    bool operator()(std::iter_common_reference_t<I1>, std::iter_common_reference_t<I2>) const;
+    bool operator()(std::iter_common_reference_t<I2>, std::iter_common_reference_t<I1>) const;
+};
+
+// Should work when all constraints are satisfied
+static_assert(std::indirect_strict_weak_order<GoodOrder<It1, It2>, It1, It2>);
+static_assert(std::indirect_strict_weak_order<bool(*)(int, long), int*, long*>);
+[[maybe_unused]] auto lambda = [](int i, long j) { return i < j; };
+static_assert(std::indirect_strict_weak_order<decltype(lambda), int*, long*>);
+
+// Should fail when either of the iterators is not indirectly_readable
+struct NotIndirectlyReadable { };
+static_assert(!std::indirect_strict_weak_order<GoodOrder<It1, NotIndirectlyReadable>, It1, NotIndirectlyReadable>);
+static_assert(!std::indirect_strict_weak_order<GoodOrder<NotIndirectlyReadable, It2>, NotIndirectlyReadable, It2>);
+
+// Should fail when the function is not copy constructible
+struct BadOrder1 {
+    BadOrder1(BadOrder1 const&) = delete;
+    template <class T, class U> bool operator()(T const&, U const&) const;
+};
+static_assert(!std::indirect_strict_weak_order<BadOrder1, It1, It2>);
+
+// Should fail when the function can't be called with (iter_value_t&, iter_value_t&)
+struct BadOrder2 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_value_t<It1>&, std::iter_value_t<It2>&) const = delete;
+};
+static_assert(!std::indirect_strict_weak_order<BadOrder2, It1, It2>);
+
+// Should fail when the function can't be called with (iter_value_t&, iter_reference_t)
+struct BadOrder3 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_value_t<It1>&, std::iter_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_strict_weak_order<BadOrder3, It1, It2>);
+
+// Should fail when the function can't be called with (iter_reference_t, iter_value_t&)
+struct BadOrder4 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_reference_t<It1>, std::iter_value_t<It2>&) const = delete;
+};
+static_assert(!std::indirect_strict_weak_order<BadOrder4, It1, It2>);
+
+// Should fail when the function can't be called with (iter_reference_t, iter_reference_t)
+struct BadOrder5 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_reference_t<It1>, std::iter_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_strict_weak_order<BadOrder5, It1, It2>);
+
+// Should fail when the function can't be called with (iter_common_reference_t, iter_common_reference_t)
+struct BadOrder6 {
+    template <class T, class U> bool operator()(T const&, U const&) const;
+    bool operator()(std::iter_common_reference_t<It1>, std::iter_common_reference_t<It2>) const = delete;
+};
+static_assert(!std::indirect_strict_weak_order<BadOrder6, It1, It2>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_unary_predicate.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_unary_predicate.compile.pass.cpp
new file mode 100644
index 0000000..05e359d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirect_unary_predicate.compile.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class I>
+// concept indirect_unary_predicate;
+
+#include <iterator>
+#include <type_traits>
+
+#include "indirectly_readable.h"
+
+using It = IndirectlyReadable<struct Token>;
+
+template <class I>
+struct GoodPredicate {
+    bool operator()(std::iter_reference_t<I>) const;
+    bool operator()(std::iter_value_t<I>&) const;
+    bool operator()(std::iter_common_reference_t<I>) const;
+};
+
+// Should work when all constraints are satisfied
+static_assert(std::indirect_unary_predicate<GoodPredicate<It>, It>);
+static_assert(std::indirect_unary_predicate<bool(*)(int), int*>);
+[[maybe_unused]] auto lambda = [](int i) { return i % 2 == 0; };
+static_assert(std::indirect_unary_predicate<decltype(lambda), int*>);
+
+// Should fail when the iterator is not indirectly_readable
+struct NotIndirectlyReadable { };
+static_assert(!std::indirect_unary_predicate<GoodPredicate<NotIndirectlyReadable>, NotIndirectlyReadable>);
+
+// Should fail when the predicate is not copy constructible
+struct BadPredicate1 {
+    BadPredicate1(BadPredicate1 const&) = delete;
+    template <class T> bool operator()(T const&) const;
+};
+static_assert(!std::indirect_unary_predicate<BadPredicate1, It>);
+
+// Should fail when the predicate can't be called with std::iter_value_t<It>&
+struct BadPredicate2 {
+    template <class T> bool operator()(T const&) const;
+    bool operator()(std::iter_value_t<It>&) const = delete;
+};
+static_assert(!std::indirect_unary_predicate<BadPredicate2, It>);
+
+// Should fail when the predicate can't be called with std::iter_reference_t<It>
+struct BadPredicate3 {
+    template <class T> bool operator()(T const&) const;
+    bool operator()(std::iter_reference_t<It>) const = delete;
+};
+static_assert(!std::indirect_unary_predicate<BadPredicate3, It>);
+
+// Should fail when the predicate can't be called with std::iter_common_reference_t<It>
+struct BadPredicate4 {
+    template <class T> bool operator()(T const&) const;
+    bool operator()(std::iter_common_reference_t<It>) const = delete;
+};
+static_assert(!std::indirect_unary_predicate<BadPredicate4, It>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_comparable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_comparable.compile.pass.cpp
new file mode 100644
index 0000000..eae5b34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_comparable.compile.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I1, class I2, class R, class P1, class P2>
+// concept indirectly_comparable;
+
+#include <functional>
+#include <iterator>
+#include <type_traits>
+
+struct Deref {
+    int operator()(int*) const;
+};
+
+static_assert(!std::indirectly_comparable<int, int, std::less<int>>);  // not dereferenceable
+static_assert(!std::indirectly_comparable<int*, int*, int>);  // not a predicate
+static_assert( std::indirectly_comparable<int*, int*, std::less<int>>);
+static_assert(!std::indirectly_comparable<int**, int*, std::less<int>>);
+static_assert( std::indirectly_comparable<int**, int*, std::less<int>, Deref>);
+static_assert(!std::indirectly_comparable<int**, int*, std::less<int>, Deref, Deref>);
+static_assert(!std::indirectly_comparable<int**, int*, std::less<int>, std::identity, Deref>);
+static_assert( std::indirectly_comparable<int*, int**, std::less<int>, std::identity, Deref>);
+
+template<class F>
+  requires std::indirectly_comparable<int*, char*, F>
+           && true // This true is an additional atomic constraint as a tie breaker
+constexpr bool subsumes(F) { return true; }
+
+template<class F>
+  requires std::indirect_binary_predicate<F, std::projected<int*, std::identity>, std::projected<char*, std::identity>>
+void subsumes(F);
+
+template<class F>
+  requires std::indirect_binary_predicate<F, std::projected<int*, std::identity>, std::projected<char*, std::identity>>
+           && true // This true is an additional atomic constraint as a tie breaker
+constexpr bool is_subsumed(F) { return true; }
+
+template<class F>
+  requires std::indirectly_comparable<int*, char*, F>
+void is_subsumed(F);
+
+static_assert(subsumes(std::less<int>()));
+static_assert(is_subsumed(std::less<int>()));
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_regular_unary_invocable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_regular_unary_invocable.compile.pass.cpp
new file mode 100644
index 0000000..333b9fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_regular_unary_invocable.compile.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class I>
+// concept indirectly_regular_unary_invocable;
+
+#include <iterator>
+#include <concepts>
+
+#include "indirectly_readable.h"
+
+using It = IndirectlyReadable<struct Token>;
+using R1 = T1<struct ReturnToken>;
+using R2 = T2<struct ReturnToken>;
+
+template <class I>
+struct GoodInvocable {
+    R1 operator()(std::iter_value_t<I>&) const;
+    R2 operator()(std::iter_reference_t<I>) const;
+    R2 operator()(std::iter_common_reference_t<I>) const;
+};
+
+// Should work when all constraints are satisfied
+static_assert(std::indirectly_regular_unary_invocable<GoodInvocable<It>, It>);
+
+// Should fail when the iterator is not indirectly_readable
+struct NotIndirectlyReadable { };
+static_assert(!std::indirectly_regular_unary_invocable<GoodInvocable<NotIndirectlyReadable>, NotIndirectlyReadable>);
+
+// Should fail when the invocable is not copy constructible
+struct BadInvocable1 {
+    BadInvocable1(BadInvocable1 const&) = delete;
+    template <class T> R1 operator()(T const&) const;
+};
+static_assert(!std::indirectly_regular_unary_invocable<BadInvocable1, It>);
+
+// Should fail when the invocable can't be called with (iter_value_t&)
+struct BadInvocable2 {
+    template <class T> R1 operator()(T const&) const;
+    R1 operator()(std::iter_value_t<It>&) const = delete;
+};
+static_assert(!std::indirectly_regular_unary_invocable<BadInvocable2, It>);
+
+// Should fail when the invocable can't be called with (iter_reference_t)
+struct BadInvocable3 {
+    template <class T> R1 operator()(T const&) const;
+    R1 operator()(std::iter_reference_t<It>) const = delete;
+};
+static_assert(!std::indirectly_regular_unary_invocable<BadInvocable3, It>);
+
+// Should fail when the invocable can't be called with (iter_common_reference_t)
+struct BadInvocable4 {
+    template <class T> R1 operator()(T const&) const;
+    R1 operator()(std::iter_common_reference_t<It>) const = delete;
+};
+static_assert(!std::indirectly_regular_unary_invocable<BadInvocable4, It>);
+
+// Should fail when the invocable doesn't have a common reference between its return types
+struct BadInvocable5 {
+    R1 operator()(std::iter_value_t<It>&) const;
+    struct Unrelated { };
+    Unrelated operator()(std::iter_reference_t<It>) const;
+    R1 operator()(std::iter_common_reference_t<It>) const;
+};
+static_assert(!std::indirectly_regular_unary_invocable<BadInvocable5, It>);
+
+// Various tests with callables
+struct S;
+static_assert(std::indirectly_regular_unary_invocable<int (*)(int), int*>);
+static_assert(std::indirectly_regular_unary_invocable<int (&)(int), int*>);
+static_assert(std::indirectly_regular_unary_invocable<int S::*, S*>);
+static_assert(std::indirectly_regular_unary_invocable<int (S::*)(), S*>);
+static_assert(std::indirectly_regular_unary_invocable<int (S::*)() const, S*>);
+static_assert(std::indirectly_regular_unary_invocable<void(*)(int), int*>);
+
+static_assert(!std::indirectly_regular_unary_invocable<int(int), int*>); // not move constructible
+static_assert(!std::indirectly_regular_unary_invocable<int (*)(int*, int*), int*>);
+static_assert(!std::indirectly_regular_unary_invocable<int (&)(int*, int*), int*>);
+static_assert(!std::indirectly_regular_unary_invocable<int (S::*)(int*), S*>);
+static_assert(!std::indirectly_regular_unary_invocable<int (S::*)(int*) const, S*>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_unary_invocable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_unary_invocable.compile.pass.cpp
new file mode 100644
index 0000000..8b7c3f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/indirectinvocable/indirectly_unary_invocable.compile.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class F, class I>
+// concept indirectly_unary_invocable;
+
+#include <iterator>
+#include <concepts>
+
+#include "indirectly_readable.h"
+
+using It = IndirectlyReadable<struct Token>;
+using R1 = T1<struct ReturnToken>;
+using R2 = T2<struct ReturnToken>;
+
+template <class I>
+struct GoodInvocable {
+    R1 operator()(std::iter_value_t<I>&) const;
+    R2 operator()(std::iter_reference_t<I>) const;
+    R2 operator()(std::iter_common_reference_t<I>) const;
+};
+
+// Should work when all constraints are satisfied
+static_assert(std::indirectly_unary_invocable<GoodInvocable<It>, It>);
+
+// Should fail when the iterator is not indirectly_readable
+struct NotIndirectlyReadable { };
+static_assert(!std::indirectly_unary_invocable<GoodInvocable<NotIndirectlyReadable>, NotIndirectlyReadable>);
+
+// Should fail when the invocable is not copy constructible
+struct BadInvocable1 {
+    BadInvocable1(BadInvocable1 const&) = delete;
+    template <class T> R1 operator()(T const&) const;
+};
+static_assert(!std::indirectly_unary_invocable<BadInvocable1, It>);
+
+// Should fail when the invocable can't be called with (iter_value_t&)
+struct BadInvocable2 {
+    template <class T> R1 operator()(T const&) const;
+    R1 operator()(std::iter_value_t<It>&) const = delete;
+};
+static_assert(!std::indirectly_unary_invocable<BadInvocable2, It>);
+
+// Should fail when the invocable can't be called with (iter_reference_t)
+struct BadInvocable3 {
+    template <class T> R1 operator()(T const&) const;
+    R1 operator()(std::iter_reference_t<It>) const = delete;
+};
+static_assert(!std::indirectly_unary_invocable<BadInvocable3, It>);
+
+// Should fail when the invocable can't be called with (iter_common_reference_t)
+struct BadInvocable4 {
+    template <class T> R1 operator()(T const&) const;
+    R1 operator()(std::iter_common_reference_t<It>) const = delete;
+};
+static_assert(!std::indirectly_unary_invocable<BadInvocable4, It>);
+
+// Should fail when the invocable doesn't have a common reference between its return types
+struct BadInvocable5 {
+    R1 operator()(std::iter_value_t<It>&) const;
+    struct Unrelated { };
+    Unrelated operator()(std::iter_reference_t<It>) const;
+    R1 operator()(std::iter_common_reference_t<It>) const;
+};
+static_assert(!std::indirectly_unary_invocable<BadInvocable5, It>);
+
+// Various tests with callables
+struct S;
+static_assert(std::indirectly_unary_invocable<int (*)(int), int*>);
+static_assert(std::indirectly_unary_invocable<int (&)(int), int*>);
+static_assert(std::indirectly_unary_invocable<int S::*, S*>);
+static_assert(std::indirectly_unary_invocable<int (S::*)(), S*>);
+static_assert(std::indirectly_unary_invocable<int (S::*)() const, S*>);
+static_assert(std::indirectly_unary_invocable<void(*)(int), int*>);
+
+static_assert(!std::indirectly_unary_invocable<int(int), int*>); // not move constructible
+static_assert(!std::indirectly_unary_invocable<int (*)(int*, int*), int*>);
+static_assert(!std::indirectly_unary_invocable<int (&)(int*, int*), int*>);
+static_assert(!std::indirectly_unary_invocable<int (S::*)(int*), S*>);
+static_assert(!std::indirectly_unary_invocable<int (S::*)(int*) const, S*>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/projected/projected.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/projected/projected.compile.pass.cpp
new file mode 100644
index 0000000..06d1171
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/indirectcallable/projected/projected.compile.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// projected
+
+#include <iterator>
+
+#include <concepts>
+#include <functional>
+
+#include "test_iterators.h"
+
+using IntPtr = std::projected<int const*, std::identity>;
+static_assert(std::same_as<IntPtr::value_type, int>);
+static_assert(std::same_as<decltype(*std::declval<IntPtr>()), int const&>);
+static_assert(std::same_as<std::iter_difference_t<IntPtr>, std::ptrdiff_t>);
+
+struct S { };
+
+using Cpp17InputIterator = std::projected<cpp17_input_iterator<S*>, int S::*>;
+static_assert(std::same_as<Cpp17InputIterator::value_type, int>);
+static_assert(std::same_as<decltype(*std::declval<Cpp17InputIterator>()), int&>);
+static_assert(std::same_as<std::iter_difference_t<Cpp17InputIterator>, std::ptrdiff_t>);
+
+using Cpp20InputIterator = std::projected<cpp20_input_iterator<S*>, int S::*>;
+static_assert(std::same_as<Cpp20InputIterator::value_type, int>);
+static_assert(std::same_as<decltype(*std::declval<Cpp20InputIterator>()), int&>);
+static_assert(std::same_as<std::iter_difference_t<Cpp20InputIterator>, std::ptrdiff_t>);
+
+using ForwardIterator = std::projected<forward_iterator<S*>, int (S::*)()>;
+static_assert(std::same_as<ForwardIterator::value_type, int>);
+static_assert(std::same_as<decltype(*std::declval<ForwardIterator>()), int>);
+static_assert(std::same_as<std::iter_difference_t<ForwardIterator>, std::ptrdiff_t>);
+
+using BidirectionalIterator = std::projected<bidirectional_iterator<S*>, S* (S::*)() const>;
+static_assert(std::same_as<BidirectionalIterator::value_type, S*>);
+static_assert(std::same_as<decltype(*std::declval<BidirectionalIterator>()), S*>);
+static_assert(std::same_as<std::iter_difference_t<BidirectionalIterator>, std::ptrdiff_t>);
+
+using RandomAccessIterator = std::projected<random_access_iterator<S*>, S && (S::*)()>;
+static_assert(std::same_as<RandomAccessIterator::value_type, S>);
+static_assert(std::same_as<decltype(*std::declval<RandomAccessIterator>()), S&&>);
+static_assert(std::same_as<std::iter_difference_t<RandomAccessIterator>, std::ptrdiff_t>);
+
+using ContiguousIterator = std::projected<contiguous_iterator<S*>, S& (S::*)() const>;
+static_assert(std::same_as<ContiguousIterator::value_type, S>);
+static_assert(std::same_as<decltype(*std::declval<ContiguousIterator>()), S&>);
+static_assert(std::same_as<std::iter_difference_t<ContiguousIterator>, std::ptrdiff_t>);
+
+template <class I, class F>
+constexpr bool projectable = requires {
+  typename std::projected<I, F>;
+};
+
+static_assert(!projectable<int, void (*)(int)>); // int isn't indirectly_readable
+static_assert(!projectable<S, void (*)(int)>);   // S isn't weakly_incrementable
+static_assert(!projectable<int*, void(int)>);    // void(int) doesn't satisfy indirectly_regular_unary_invcable
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/input.iterators/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/input.iterators/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/input.iterators/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/incrementable.traits/incrementable_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/incrementable.traits/incrementable_traits.compile.pass.cpp
new file mode 100644
index 0000000..b1fe9e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/incrementable.traits/incrementable_traits.compile.pass.cpp
@@ -0,0 +1,238 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// struct incrementable_traits;
+
+#include <iterator>
+
+#include <concepts>
+
+#include "test_macros.h"
+
+template <class T>
+concept check_has_difference_type = requires {
+  typename std::incrementable_traits<T>::difference_type;
+};
+
+template <class T, class Expected>
+concept check_difference_type_matches =
+  check_has_difference_type<T> &&
+  std::same_as<typename std::incrementable_traits<T>::difference_type, Expected>;
+
+template <class T, class Expected>
+constexpr bool check_incrementable_traits() {
+  constexpr bool result = check_difference_type_matches<T, Expected>;
+  static_assert(check_difference_type_matches<T const, Expected> == result);
+  return result;
+}
+
+static_assert(check_incrementable_traits<float*, std::ptrdiff_t>());
+static_assert(check_incrementable_traits<float const*, std::ptrdiff_t>());
+static_assert(check_incrementable_traits<float volatile*, std::ptrdiff_t>());
+static_assert(check_incrementable_traits<float const volatile*, std::ptrdiff_t>());
+static_assert(check_incrementable_traits<float**, std::ptrdiff_t>());
+
+static_assert(check_incrementable_traits<int[], std::ptrdiff_t>());
+static_assert(check_incrementable_traits<int[10], std::ptrdiff_t>());
+
+static_assert(check_incrementable_traits<char, int>());
+static_assert(check_incrementable_traits<signed char, int>());
+static_assert(check_incrementable_traits<unsigned char, int>());
+static_assert(check_incrementable_traits<short, int>());
+static_assert(check_incrementable_traits<unsigned short, int>());
+static_assert(check_incrementable_traits<int, int>());
+static_assert(check_incrementable_traits<unsigned int, int>());
+static_assert(check_incrementable_traits<long, long>());
+static_assert(check_incrementable_traits<unsigned long, long>());
+static_assert(check_incrementable_traits<long long, long long>());
+static_assert(check_incrementable_traits<unsigned long long, long long>());
+
+static_assert(check_incrementable_traits<int&, int>());
+static_assert(check_incrementable_traits<int const&, int>());
+static_assert(check_incrementable_traits<int volatile&, int>());
+static_assert(check_incrementable_traits<int const volatile&, int>());
+static_assert(check_incrementable_traits<int&&, int>());
+static_assert(check_incrementable_traits<int const&&, int>());
+static_assert(check_incrementable_traits<int volatile&&, int>());
+static_assert(check_incrementable_traits<int const volatile&&, int>());
+
+static_assert(check_incrementable_traits<int volatile, int>());
+static_assert(check_incrementable_traits<int* volatile, std::ptrdiff_t>());
+
+struct integral_difference_type {
+  using difference_type = int;
+};
+static_assert(check_incrementable_traits<integral_difference_type, int>());
+
+struct non_integral_difference_type {
+  using difference_type = void;
+};
+static_assert(check_incrementable_traits<non_integral_difference_type, void>());
+
+struct int_subtraction {
+  friend int operator-(int_subtraction, int_subtraction);
+};
+static_assert(check_incrementable_traits<int_subtraction, int>());
+static_assert(!check_incrementable_traits<int_subtraction volatile&, int>());
+static_assert(!check_incrementable_traits<int_subtraction const volatile&, int>());
+
+struct char_subtraction {
+  friend char operator-(char_subtraction, char_subtraction);
+};
+static_assert(check_incrementable_traits<char_subtraction, signed char>());
+
+struct unsigned_int_subtraction_with_cv {
+  friend unsigned int operator-(unsigned_int_subtraction_with_cv const&, unsigned_int_subtraction_with_cv const&);
+  friend unsigned int operator-(unsigned_int_subtraction_with_cv const volatile&, unsigned_int_subtraction_with_cv const volatile&);
+};
+static_assert(check_incrementable_traits<unsigned_int_subtraction_with_cv, int>());
+static_assert(check_incrementable_traits<unsigned_int_subtraction_with_cv volatile&, int>());
+static_assert(check_incrementable_traits<unsigned_int_subtraction_with_cv const volatile&, int>());
+
+struct specialised_incrementable_traits {};
+template <>
+struct std::incrementable_traits<specialised_incrementable_traits> {
+  using difference_type = int;
+};
+static_assert(check_incrementable_traits<specialised_incrementable_traits, int>());
+
+static_assert(!check_has_difference_type<void>);
+static_assert(!check_has_difference_type<float>);
+static_assert(!check_has_difference_type<double>);
+static_assert(!check_has_difference_type<long double>);
+static_assert(!check_has_difference_type<float&>);
+static_assert(!check_has_difference_type<float const&>);
+
+static_assert(!check_has_difference_type<void*>);
+static_assert(!check_has_difference_type<std::nullptr_t>);
+static_assert(!check_has_difference_type<int()>);
+static_assert(!check_has_difference_type<int() noexcept>);
+static_assert(!check_has_difference_type<int (*)()>);
+static_assert(!check_has_difference_type<int (*)() noexcept>);
+static_assert(!check_has_difference_type<int (&)()>);
+static_assert(!check_has_difference_type<int (&)() noexcept>);
+
+#define TEST_POINTER_TO_MEMBER_FUNCTION(type, cv)                          \
+  static_assert(!check_has_difference_type<int (type::*)() cv>);           \
+  static_assert(!check_has_difference_type<int (type::*)() cv noexcept>);  \
+  static_assert(!check_has_difference_type<int (type::*)() cv&>);          \
+  static_assert(!check_has_difference_type<int (type::*)() cv& noexcept>); \
+  static_assert(!check_has_difference_type<int (type::*)() cv&&>);         \
+  static_assert(!check_has_difference_type<int (type::*)() cv&& noexcept>);
+
+struct empty {};
+
+#define NO_QUALIFIER
+TEST_POINTER_TO_MEMBER_FUNCTION(empty, NO_QUALIFIER);
+TEST_POINTER_TO_MEMBER_FUNCTION(empty, const);
+TEST_POINTER_TO_MEMBER_FUNCTION(empty, volatile);
+TEST_POINTER_TO_MEMBER_FUNCTION(empty, const volatile);
+
+struct void_subtraction {
+  friend void operator-(void_subtraction, void_subtraction);
+};
+static_assert(!check_has_difference_type<void_subtraction>);
+
+#define TEST_NOT_DIFFERENCE_TYPE(S, qual1, qual2) \
+  struct S {                                      \
+    friend int operator-(S qual1, S qual2);       \
+  };                                              \
+  static_assert(!check_has_difference_type<S>)
+
+TEST_NOT_DIFFERENCE_TYPE(A01, &, &);
+TEST_NOT_DIFFERENCE_TYPE(A02, &, const&);
+TEST_NOT_DIFFERENCE_TYPE(A03, &, volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A04, &, const volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A05, &, &&);
+TEST_NOT_DIFFERENCE_TYPE(A06, &, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A07, &, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A08, &, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A11, const&, &);
+// TEST_NOT_DIFFERENCE_TYPE(A12, const&, const&); // == true
+TEST_NOT_DIFFERENCE_TYPE(A13, const&, volatile&);
+// TEST_NOT_DIFFERENCE_TYPE(A14, const&, const volatile&); // invalid
+TEST_NOT_DIFFERENCE_TYPE(A15, const&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A16, const&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A17, const&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A18, const&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A21, volatile&, &);
+TEST_NOT_DIFFERENCE_TYPE(A22, volatile&, const&);
+TEST_NOT_DIFFERENCE_TYPE(A23, volatile&, volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A24, volatile&, const volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A25, volatile&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A26, volatile&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A27, volatile&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A28, volatile&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A31, const volatile&, &);
+// TEST_NOT_DIFFERENCE_TYPE(A32, const volatile&, const&); //  invalid
+TEST_NOT_DIFFERENCE_TYPE(A33, const volatile&, volatile&);
+// TEST_NOT_DIFFERENCE_TYPE(A34, const volatile&, const volatile&); // invalid
+TEST_NOT_DIFFERENCE_TYPE(A35, const volatile&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A36, const volatile&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A37, const volatile&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A38, const volatile&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A41, &&, &);
+TEST_NOT_DIFFERENCE_TYPE(A42, &&, const&);
+TEST_NOT_DIFFERENCE_TYPE(A43, &&, volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A44, &&, const volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A45, &&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A46, &&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A47, &&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A48, &&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A51, const&&, &);
+TEST_NOT_DIFFERENCE_TYPE(A52, const&&, const&);
+TEST_NOT_DIFFERENCE_TYPE(A53, const&&, volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A54, const&&, const volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A55, const&&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A56, const&&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A57, const&&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A58, const&&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A61, volatile&&, &);
+TEST_NOT_DIFFERENCE_TYPE(A62, volatile&&, const&);
+TEST_NOT_DIFFERENCE_TYPE(A63, volatile&&, volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A64, volatile&&, const volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A65, volatile&&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A66, volatile&&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A67, volatile&&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A68, volatile&&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A71, const volatile&&, &);
+TEST_NOT_DIFFERENCE_TYPE(A72, const volatile&&, const&);
+TEST_NOT_DIFFERENCE_TYPE(A73, const volatile&&, volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A74, const volatile&&, const volatile&);
+TEST_NOT_DIFFERENCE_TYPE(A75, const volatile&&, &&);
+TEST_NOT_DIFFERENCE_TYPE(A76, const volatile&&, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A77, const volatile&&, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A78, const volatile&&, const volatile&&);
+
+TEST_NOT_DIFFERENCE_TYPE(A81, &, NO_QUALIFIER);
+// TEST_NOT_DIFFERENCE_TYPE(A82, const&, NO_QUALIFIER); // == true
+TEST_NOT_DIFFERENCE_TYPE(A83, volatile&, NO_QUALIFIER);
+// TEST_NOT_DIFFERENCE_TYPE(A84, const volatile&, NO_QUALIFIER); // invalid
+TEST_NOT_DIFFERENCE_TYPE(A85, &&, NO_QUALIFIER);
+TEST_NOT_DIFFERENCE_TYPE(A86, const&&, NO_QUALIFIER);
+TEST_NOT_DIFFERENCE_TYPE(A87, volatile&&, NO_QUALIFIER);
+TEST_NOT_DIFFERENCE_TYPE(A88, const volatile&&, NO_QUALIFIER);
+
+TEST_NOT_DIFFERENCE_TYPE(A91, NO_QUALIFIER, &);
+// TEST_NOT_DIFFERENCE_TYPE(A92, NO_QUALIFIER, const&); // == true
+TEST_NOT_DIFFERENCE_TYPE(A93, NO_QUALIFIER, volatile&);
+// TEST_NOT_DIFFERENCE_TYPE(A94, NO_QUALIFIER, const volatile&); // invalid
+TEST_NOT_DIFFERENCE_TYPE(A95, NO_QUALIFIER, &&);
+TEST_NOT_DIFFERENCE_TYPE(A96, NO_QUALIFIER, const&&);
+TEST_NOT_DIFFERENCE_TYPE(A97, NO_QUALIFIER, volatile&&);
+TEST_NOT_DIFFERENCE_TYPE(A98, NO_QUALIFIER, const volatile&&);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/incrementable.traits/iter_difference_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/incrementable.traits/iter_difference_t.compile.pass.cpp
new file mode 100644
index 0000000..bd6664f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/incrementable.traits/iter_difference_t.compile.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// using iter_difference_t;
+
+#include <iterator>
+
+#include <concepts>
+#include <vector>
+
+template <class T>
+constexpr bool has_no_iter_difference_t() {
+  return !requires { typename std::iter_difference_t<T>; };
+}
+
+template <class T, class Expected>
+constexpr bool check_iter_difference_t() {
+  constexpr bool result = std::same_as<std::iter_difference_t<T>, Expected>;
+  static_assert(std::same_as<std::iter_difference_t<T const>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T volatile>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T const volatile>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T const&>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T volatile&>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T const volatile&>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T const&&>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T volatile&&>, Expected> == result);
+  static_assert(std::same_as<std::iter_difference_t<T const volatile&&>, Expected> == result);
+
+  return result;
+}
+
+static_assert(check_iter_difference_t<int, int>());
+static_assert(check_iter_difference_t<int*, std::ptrdiff_t>());
+static_assert(check_iter_difference_t<std::vector<int>::iterator, std::ptrdiff_t>());
+
+struct int_subtraction {
+  friend int operator-(int_subtraction, int_subtraction);
+};
+static_assert(check_iter_difference_t<int_subtraction, int>());
+
+static_assert(has_no_iter_difference_t<void>());
+static_assert(has_no_iter_difference_t<double>());
+
+struct S {};
+static_assert(has_no_iter_difference_t<S>());
+
+struct void_subtraction {
+  friend void operator-(void_subtraction, void_subtraction);
+};
+static_assert(has_no_iter_difference_t<void_subtraction>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/readable.traits/indirectly_readable_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/readable.traits/indirectly_readable_traits.compile.pass.cpp
new file mode 100644
index 0000000..835aa9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/readable.traits/indirectly_readable_traits.compile.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// struct indirectly_readable_traits;
+
+#include <iterator>
+
+#include <concepts>
+#include <memory>
+#include <optional>
+#include <string>
+#include <vector>
+
+template <class T>
+concept has_no_value_type = !requires {
+  typename std::indirectly_readable_traits<T>::value_type;
+};
+
+template <class T, class Expected>
+concept value_type_matches =
+  std::same_as<typename std::indirectly_readable_traits<T>::value_type, Expected>;
+
+template <class T>
+constexpr bool check_pointer() {
+  constexpr bool result = value_type_matches<T*, T>;
+  static_assert(value_type_matches<T const*, T> == result);
+  static_assert(value_type_matches<T volatile*, T> == result);
+  static_assert(value_type_matches<T const volatile*, T> == result);
+
+  static_assert(value_type_matches<T* const, T> == result);
+  static_assert(value_type_matches<T const* const, T> == result);
+  static_assert(value_type_matches<T volatile* const, T> == result);
+  static_assert(value_type_matches<T const volatile* const, T> == result);
+
+  return result;
+}
+
+template <class T>
+constexpr bool check_array() {
+  static_assert(value_type_matches<T[], T>);
+  static_assert(value_type_matches<T const[], T>);
+  static_assert(value_type_matches<T volatile[], T>);
+  static_assert(value_type_matches<T const volatile[], T>);
+  static_assert(value_type_matches<T[10], T>);
+  static_assert(value_type_matches<T const[10], T>);
+  static_assert(value_type_matches<T volatile[10], T>);
+  static_assert(value_type_matches<T const volatile[10], T>);
+  return true;
+}
+
+template <class T, class Expected>
+constexpr bool check_member() {
+  static_assert(value_type_matches<T, Expected>);
+  static_assert(value_type_matches<T const, Expected>);
+  static_assert(value_type_matches<T volatile, Expected>);
+  return true;
+}
+
+static_assert(check_pointer<int>());
+static_assert(check_pointer<int*>());
+static_assert(check_pointer<int[10]>());
+static_assert(!check_pointer<void>());
+static_assert(!check_pointer<int()>());
+
+static_assert(check_array<int>());
+static_assert(check_array<int*>());
+static_assert(check_array<int[10]>());
+
+template<class T>
+struct ValueOf {
+  using value_type = T;
+};
+
+template<class U>
+struct ElementOf {
+  using element_type = U;
+};
+
+template<class T, class U>
+struct TwoTypes {
+  using value_type = T;
+  using element_type = U;
+};
+
+static_assert(check_member<ValueOf<int>, int>());
+static_assert(check_member<ValueOf<int[10]>, int[10]>());
+static_assert(check_member<ValueOf<int[]>, int[]>());
+static_assert(has_no_value_type<ValueOf<void>>);
+static_assert(has_no_value_type<ValueOf<int()>>);
+static_assert(has_no_value_type<ValueOf<int&>>);
+static_assert(has_no_value_type<ValueOf<int&&>>);
+
+static_assert(check_member<ElementOf<int>, int>());
+static_assert(check_member<ElementOf<int[10]>, int[10]>());
+static_assert(check_member<ElementOf<int[]>, int[]>());
+static_assert(has_no_value_type<ElementOf<void>>);
+static_assert(has_no_value_type<ElementOf<int()>>);
+static_assert(has_no_value_type<ElementOf<int&>>);
+static_assert(has_no_value_type<ElementOf<int&&>>);
+
+static_assert(check_member<TwoTypes<int, int>, int>());
+static_assert(check_member<TwoTypes<int, int const>, int>());
+static_assert(check_member<TwoTypes<int, int volatile>, int>());
+static_assert(check_member<TwoTypes<int, int const volatile>, int>());
+static_assert(check_member<TwoTypes<int const, int>, int>());
+static_assert(check_member<TwoTypes<int const, int const>, int>());
+static_assert(check_member<TwoTypes<int const, int volatile>, int>());
+static_assert(check_member<TwoTypes<int const, int const volatile>, int>());
+static_assert(check_member<TwoTypes<int volatile, int>, int>());
+static_assert(check_member<TwoTypes<int volatile, int const>, int>());
+static_assert(check_member<TwoTypes<int volatile, int volatile>, int>());
+static_assert(check_member<TwoTypes<int volatile, int const volatile>, int>());
+static_assert(check_member<TwoTypes<int const volatile, int>, int>());
+static_assert(check_member<TwoTypes<int const volatile, int const>, int>());
+static_assert(check_member<TwoTypes<int const volatile, int volatile>, int>());
+static_assert(check_member<TwoTypes<int const volatile, int const volatile>, int>());
+static_assert(has_no_value_type<TwoTypes<int, long>>);
+static_assert(has_no_value_type<TwoTypes<int, int&>>);
+static_assert(has_no_value_type<TwoTypes<int&, int>>);
+
+struct S2 {};
+template <>
+struct std::indirectly_readable_traits<S2> {
+  using value_type = int;
+};
+static_assert(value_type_matches<S2, int>);
+static_assert(value_type_matches<const S2, int>);
+static_assert(has_no_value_type<volatile S2>);
+static_assert(has_no_value_type<const volatile S2>);
+static_assert(has_no_value_type<S2&>);
+static_assert(has_no_value_type<const S2&>);
+
+static_assert(check_member<std::vector<int>, int>());
+static_assert(check_member<std::vector<int>::iterator, int>());
+static_assert(check_member<std::vector<int>::const_iterator, int>());
+static_assert(check_member<std::istream_iterator<int>, int>());
+static_assert(check_member<std::istreambuf_iterator<char>, char>());
+static_assert(check_member<std::optional<int>, int>());
+static_assert(check_member<std::shared_ptr<long>, long>());
+static_assert(check_member<std::shared_ptr<const long>, long>());
+static_assert(has_no_value_type<void>);
+static_assert(has_no_value_type<int>);
+static_assert(has_no_value_type<std::nullptr_t>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/readable.traits/iter_value_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/readable.traits/iter_value_t.pass.cpp
new file mode 100644
index 0000000..2d46520
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.assoc.types/readable.traits/iter_value_t.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// using iter_value_t;
+
+#include <iterator>
+
+#include <concepts>
+#include <memory>
+#include <vector>
+
+template <class T, class Expected>
+constexpr bool check_iter_value_t() {
+  constexpr bool result = std::same_as<std::iter_value_t<T>, Expected>;
+  static_assert(std::same_as<std::iter_value_t<T const>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T volatile>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T const volatile>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T const&>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T volatile&>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T const volatile&>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T const&&>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T volatile&&>, Expected> == result);
+  static_assert(std::same_as<std::iter_value_t<T const volatile&&>, Expected> == result);
+
+  return result;
+}
+
+static_assert(check_iter_value_t<int*, int>());
+static_assert(check_iter_value_t<int[], int>());
+static_assert(check_iter_value_t<int[10], int>());
+static_assert(check_iter_value_t<std::vector<int>::iterator, int>());
+static_assert(check_iter_value_t<std::shared_ptr<int>, int>());
+
+struct both_members {
+  using value_type = double;
+  using element_type = double;
+};
+static_assert(check_iter_value_t<both_members, double>());
+
+// clang-format off
+template <class T>
+requires requires { typename std::iter_value_t<T>; }
+constexpr bool check_no_iter_value_t() {
+  return false;
+}
+// clang-format on
+
+template <class T>
+constexpr bool check_no_iter_value_t() {
+  return true;
+}
+
+static_assert(check_no_iter_value_t<void>());
+static_assert(check_no_iter_value_t<double>());
+
+struct S {};
+static_assert(check_no_iter_value_t<S>());
+
+struct different_value_element_members {
+  using value_type = int;
+  using element_type = long;
+};
+static_assert(check_no_iter_value_t<different_value_element_members>());
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/incrementable.h b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/incrementable.h
new file mode 100644
index 0000000..16eddd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/incrementable.h
@@ -0,0 +1,184 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_STD_ITERATORS_ITERATOR_REQUIREMENTS_ITERATOR_CONCEPTS_INCREMENTABLE_H
+#define LIBCPP_TEST_STD_ITERATORS_ITERATOR_REQUIREMENTS_ITERATOR_CONCEPTS_INCREMENTABLE_H
+
+struct postfix_increment_returns_void {
+  using difference_type = int;
+  postfix_increment_returns_void& operator++();
+  void operator++(int);
+};
+
+struct postfix_increment_returns_copy {
+  using difference_type = int;
+  postfix_increment_returns_copy& operator++();
+  postfix_increment_returns_copy operator++(int);
+};
+
+struct has_integral_minus {
+  has_integral_minus& operator++();
+  has_integral_minus operator++(int);
+
+  long operator-(has_integral_minus) const;
+};
+
+struct has_distinct_difference_type_and_minus {
+  using difference_type = short;
+
+  has_distinct_difference_type_and_minus& operator++();
+  has_distinct_difference_type_and_minus operator++(int);
+
+  long operator-(has_distinct_difference_type_and_minus) const;
+};
+
+struct missing_difference_type {
+  missing_difference_type& operator++();
+  void operator++(int);
+};
+
+struct floating_difference_type {
+  using difference_type = float;
+
+  floating_difference_type& operator++();
+  void operator++(int);
+};
+
+struct non_const_minus {
+  non_const_minus& operator++();
+  non_const_minus operator++(int);
+
+  long operator-(non_const_minus);
+};
+
+struct non_integral_minus {
+  non_integral_minus& operator++();
+  non_integral_minus operator++(int);
+
+  void operator-(non_integral_minus);
+};
+
+struct bad_difference_type_good_minus {
+  using difference_type = float;
+
+  bad_difference_type_good_minus& operator++();
+  void operator++(int);
+
+  int operator-(bad_difference_type_good_minus) const;
+};
+
+struct not_default_initializable {
+  using difference_type = int;
+  not_default_initializable() = delete;
+
+  not_default_initializable& operator++();
+  void operator++(int);
+};
+
+struct not_movable {
+  using difference_type = int;
+
+  not_movable() = default;
+  not_movable(not_movable&&) = delete;
+
+  not_movable& operator++();
+  void operator++(int);
+};
+
+struct preinc_not_declared {
+  using difference_type = int;
+
+  void operator++(int);
+};
+
+struct postinc_not_declared {
+  using difference_type = int;
+
+  postinc_not_declared& operator++();
+};
+
+struct incrementable_with_difference_type {
+  using difference_type = int;
+
+  incrementable_with_difference_type& operator++();
+  incrementable_with_difference_type operator++(int);
+
+  bool operator==(incrementable_with_difference_type const&) const;
+};
+
+struct incrementable_without_difference_type {
+  incrementable_without_difference_type& operator++();
+  incrementable_without_difference_type operator++(int);
+
+  bool operator==(incrementable_without_difference_type const&) const;
+
+  int operator-(incrementable_without_difference_type) const;
+};
+
+struct difference_type_and_void_minus {
+  using difference_type = int;
+
+  difference_type_and_void_minus& operator++();
+  difference_type_and_void_minus operator++(int);
+
+  bool operator==(difference_type_and_void_minus const&) const;
+
+  void operator-(difference_type_and_void_minus) const;
+};
+
+struct noncopyable_with_difference_type {
+  using difference_type = int;
+
+  noncopyable_with_difference_type() = default;
+  noncopyable_with_difference_type(noncopyable_with_difference_type&&) = default;
+  noncopyable_with_difference_type(noncopyable_with_difference_type const&) = delete;
+
+  noncopyable_with_difference_type& operator=(noncopyable_with_difference_type&&) = default;
+  noncopyable_with_difference_type& operator=(noncopyable_with_difference_type const&) = delete;
+
+  noncopyable_with_difference_type& operator++();
+  noncopyable_with_difference_type operator++(int);
+
+  bool operator==(noncopyable_with_difference_type const&) const;
+};
+
+struct noncopyable_without_difference_type {
+  noncopyable_without_difference_type() = default;
+  noncopyable_without_difference_type(noncopyable_without_difference_type&&) = default;
+  noncopyable_without_difference_type(noncopyable_without_difference_type const&) = delete;
+
+  noncopyable_without_difference_type& operator=(noncopyable_without_difference_type&&) = default;
+  noncopyable_without_difference_type& operator=(noncopyable_without_difference_type const&) = delete;
+
+  noncopyable_without_difference_type& operator++();
+  noncopyable_without_difference_type operator++(int);
+
+  int operator-(noncopyable_without_difference_type const&) const;
+
+  bool operator==(noncopyable_without_difference_type const&) const;
+};
+
+struct noncopyable_with_difference_type_and_minus {
+  using difference_type = int;
+
+  noncopyable_with_difference_type_and_minus() = default;
+  noncopyable_with_difference_type_and_minus(noncopyable_with_difference_type_and_minus&&) = default;
+  noncopyable_with_difference_type_and_minus(noncopyable_with_difference_type_and_minus const&) = delete;
+
+  noncopyable_with_difference_type_and_minus& operator=(noncopyable_with_difference_type_and_minus&&) = default;
+  noncopyable_with_difference_type_and_minus& operator=(noncopyable_with_difference_type_and_minus const&) = delete;
+
+  noncopyable_with_difference_type_and_minus& operator++();
+  noncopyable_with_difference_type_and_minus operator++(int);
+
+  int operator-(noncopyable_with_difference_type_and_minus const&) const;
+
+  bool operator==(noncopyable_with_difference_type_and_minus const&) const;
+};
+
+#endif // #define LIBCPP_TEST_STD_ITERATORS_ITERATOR_REQUIREMENTS_ITERATOR_CONCEPTS_INCREMENTABLE_H
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.bidir/bidirectional_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.bidir/bidirectional_iterator.compile.pass.cpp
new file mode 100644
index 0000000..7ab3a75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.bidir/bidirectional_iterator.compile.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept bidirectional_iterator;
+
+#include <iterator>
+
+#include <concepts>
+
+#include "test_iterators.h"
+
+static_assert(!std::bidirectional_iterator<cpp17_input_iterator<int*> >);
+static_assert(!std::bidirectional_iterator<cpp20_input_iterator<int*> >);
+static_assert(!std::bidirectional_iterator<forward_iterator<int*> >);
+static_assert(std::bidirectional_iterator<bidirectional_iterator<int*> >);
+static_assert(std::bidirectional_iterator<random_access_iterator<int*> >);
+static_assert(std::bidirectional_iterator<contiguous_iterator<int*> >);
+
+
+static_assert(std::bidirectional_iterator<int*>);
+static_assert(std::bidirectional_iterator<int const*>);
+static_assert(std::bidirectional_iterator<int volatile*>);
+static_assert(std::bidirectional_iterator<int const volatile*>);
+
+struct not_forward_iterator {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::bidirectional_iterator_tag;
+
+  value_type operator*() const;
+
+  not_forward_iterator& operator++();
+  not_forward_iterator operator++(int);
+
+  not_forward_iterator& operator--();
+  not_forward_iterator& operator--(int);
+};
+static_assert(std::input_iterator<not_forward_iterator> && !std::forward_iterator<not_forward_iterator> &&
+              !std::bidirectional_iterator<not_forward_iterator>);
+
+struct wrong_iterator_category {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_category = std::forward_iterator_tag;
+
+  value_type& operator*() const;
+
+  wrong_iterator_category& operator++();
+  wrong_iterator_category operator++(int);
+
+  wrong_iterator_category& operator--();
+  wrong_iterator_category operator--(int);
+
+  bool operator==(wrong_iterator_category const&) const = default;
+};
+static_assert(!std::bidirectional_iterator<wrong_iterator_category>);
+
+struct wrong_iterator_concept {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::forward_iterator_tag;
+
+  value_type& operator*() const;
+
+  wrong_iterator_concept& operator++();
+  wrong_iterator_concept operator++(int);
+
+  wrong_iterator_concept& operator--();
+  wrong_iterator_concept operator--(int);
+
+  bool operator==(wrong_iterator_concept const&) const = default;
+};
+static_assert(!std::bidirectional_iterator<wrong_iterator_concept>);
+
+struct no_predecrement {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::bidirectional_iterator_tag;
+
+  value_type& operator*() const;
+
+  no_predecrement& operator++();
+  no_predecrement operator++(int);
+
+  no_predecrement operator--(int);
+
+  bool operator==(no_predecrement const&) const = default;
+};
+static_assert(!std::bidirectional_iterator<no_predecrement>);
+
+struct bad_predecrement {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::bidirectional_iterator_tag;
+
+  value_type& operator*() const;
+
+  bad_predecrement& operator++();
+  bad_predecrement operator++(int);
+
+  bad_predecrement operator--();
+  bad_predecrement operator--(int);
+
+  bool operator==(bad_predecrement const&) const = default;
+};
+static_assert(!std::bidirectional_iterator<bad_predecrement>);
+
+struct no_postdecrement {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::bidirectional_iterator_tag;
+
+  value_type& operator*() const;
+
+  no_postdecrement& operator++();
+  no_postdecrement operator++(int);
+
+  no_postdecrement& operator--();
+
+  bool operator==(no_postdecrement const&) const = default;
+};
+static_assert(!std::bidirectional_iterator<no_postdecrement>);
+
+struct bad_postdecrement {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::bidirectional_iterator_tag;
+
+  value_type& operator*() const;
+
+  bad_postdecrement& operator++();
+  bad_postdecrement operator++(int);
+
+  bad_postdecrement& operator--();
+  bad_postdecrement& operator--(int);
+
+  bool operator==(bad_postdecrement const&) const = default;
+};
+static_assert(!std::bidirectional_iterator<bad_postdecrement>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.bidir/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.bidir/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..bf91d0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.bidir/subsumption.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept bidirectional_iterator;
+
+#include <iterator>
+
+#include <concepts>
+
+template<std::forward_iterator I>
+constexpr bool check_subsumption() {
+  return false;
+}
+
+template<std::bidirectional_iterator>
+constexpr bool check_subsumption() {
+  return true;
+}
+
+static_assert(check_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.forward/forward_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.forward/forward_iterator.compile.pass.cpp
new file mode 100644
index 0000000..2df15cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.forward/forward_iterator.compile.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::forward_iterator;
+
+#include <iterator>
+
+#include <concepts>
+
+#include "test_iterators.h"
+
+static_assert(!std::forward_iterator<cpp17_input_iterator<int*> >);
+static_assert(!std::forward_iterator<cpp20_input_iterator<int*> >);
+static_assert(std::forward_iterator<forward_iterator<int*> >);
+static_assert(std::forward_iterator<bidirectional_iterator<int*> >);
+static_assert(std::forward_iterator<random_access_iterator<int*> >);
+static_assert(std::forward_iterator<contiguous_iterator<int*> >);
+
+static_assert(std::forward_iterator<int*>);
+static_assert(std::forward_iterator<int const*>);
+static_assert(std::forward_iterator<int volatile*>);
+static_assert(std::forward_iterator<int const volatile*>);
+
+struct not_input_iterator {
+  // using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::forward_iterator_tag;
+
+  int operator*() const;
+
+  not_input_iterator& operator++();
+  not_input_iterator operator++(int);
+
+  bool operator==(not_input_iterator const&) const = default;
+};
+static_assert(std::input_or_output_iterator<not_input_iterator>);
+static_assert(!std::input_iterator<not_input_iterator>);
+static_assert(!std::forward_iterator<not_input_iterator>);
+
+struct bad_iterator_tag {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  int operator*() const;
+
+  bad_iterator_tag& operator++();
+  bad_iterator_tag operator++(int);
+
+  bool operator==(bad_iterator_tag const&) const = default;
+};
+static_assert(!std::forward_iterator<bad_iterator_tag>);
+
+struct not_incrementable {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::forward_iterator_tag;
+
+  int operator*() const;
+
+  not_incrementable& operator++();
+  void operator++(int);
+
+  bool operator==(not_incrementable const&) const = default;
+};
+static_assert(!std::forward_iterator<not_incrementable>);
+
+struct not_equality_comparable {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::forward_iterator_tag;
+
+  int operator*() const;
+
+  not_equality_comparable& operator++();
+  not_equality_comparable operator++(int);
+
+  bool operator==(not_equality_comparable const&) const = delete;
+};
+static_assert(!std::forward_iterator<not_equality_comparable>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.forward/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.forward/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..9e4a80a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.forward/subsumption.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::forward_iterator;
+
+#include <iterator>
+
+#include <concepts>
+
+// clang-format off
+template<std::input_iterator>
+constexpr bool check_subsumption() {
+  return false;
+}
+
+template<std::forward_iterator>
+constexpr bool check_subsumption() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.inc/incrementable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.inc/incrementable.compile.pass.cpp
new file mode 100644
index 0000000..ad10220
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.inc/incrementable.compile.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In>
+// concept indirectly_readable;
+
+#include <iterator>
+
+#include <concepts>
+#include <memory>
+#include <optional>
+
+#include "../incrementable.h"
+
+static_assert(std::incrementable<int>);
+static_assert(std::incrementable<int*>);
+static_assert(std::incrementable<int**>);
+
+static_assert(!std::incrementable<postfix_increment_returns_void>);
+static_assert(!std::incrementable<postfix_increment_returns_copy>);
+static_assert(!std::incrementable<has_integral_minus>);
+static_assert(!std::incrementable<has_distinct_difference_type_and_minus>);
+static_assert(!std::incrementable<missing_difference_type>);
+static_assert(!std::incrementable<floating_difference_type>);
+static_assert(!std::incrementable<non_const_minus>);
+static_assert(!std::incrementable<non_integral_minus>);
+static_assert(!std::incrementable<bad_difference_type_good_minus>);
+static_assert(!std::incrementable<not_default_initializable>);
+static_assert(!std::incrementable<not_movable>);
+static_assert(!std::incrementable<preinc_not_declared>);
+static_assert(!std::incrementable<postinc_not_declared>);
+static_assert(std::incrementable<incrementable_with_difference_type>);
+static_assert(std::incrementable<incrementable_without_difference_type>);
+static_assert(std::incrementable<difference_type_and_void_minus>);
+static_assert(!std::incrementable<noncopyable_with_difference_type>);
+static_assert(!std::incrementable<noncopyable_without_difference_type>);
+static_assert(!std::incrementable<noncopyable_with_difference_type_and_minus>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.inc/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.inc/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..f8748b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.inc/subsumption.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept incrementable;
+
+#include <iterator>
+
+#include <concepts>
+
+// clang-format off
+template<std::weakly_incrementable I>
+requires std::regular<I>
+constexpr bool check_subsumption() {
+  return false;
+}
+
+template<std::incrementable>
+constexpr bool check_subsumption() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.input/input_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.input/input_iterator.compile.pass.cpp
new file mode 100644
index 0000000..217c68f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.input/input_iterator.compile.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept input_iterator;
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+static_assert(std::input_iterator<cpp17_input_iterator<int*> >);
+static_assert(std::input_iterator<cpp20_input_iterator<int*> >);
+
+struct no_explicit_iter_concept {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+
+  no_explicit_iter_concept() = default;
+
+  no_explicit_iter_concept(no_explicit_iter_concept&&) = default;
+  no_explicit_iter_concept& operator=(no_explicit_iter_concept&&) = default;
+
+  no_explicit_iter_concept(no_explicit_iter_concept const&) = delete;
+  no_explicit_iter_concept& operator=(no_explicit_iter_concept const&) = delete;
+
+  value_type operator*() const;
+
+  no_explicit_iter_concept& operator++();
+  void operator++(int);
+};
+// ITER-CONCEPT is `random_access_iterator_tag` >:(
+static_assert(std::input_iterator<no_explicit_iter_concept>);
+
+static_assert(std::input_iterator<int*>);
+static_assert(std::input_iterator<int const*>);
+static_assert(std::input_iterator<int volatile*>);
+static_assert(std::input_iterator<int const volatile*>);
+
+struct not_weakly_incrementable {
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  not_weakly_incrementable() = default;
+
+  not_weakly_incrementable(not_weakly_incrementable&&) = default;
+  not_weakly_incrementable& operator=(not_weakly_incrementable&&) = default;
+
+  not_weakly_incrementable(not_weakly_incrementable const&) = delete;
+  not_weakly_incrementable& operator=(not_weakly_incrementable const&) = delete;
+
+  int operator*() const;
+
+  not_weakly_incrementable& operator++();
+};
+static_assert(!std::input_or_output_iterator<not_weakly_incrementable> &&
+              !std::input_iterator<not_weakly_incrementable>);
+
+struct not_indirectly_readable {
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  not_indirectly_readable() = default;
+
+  not_indirectly_readable(not_indirectly_readable&&) = default;
+  not_indirectly_readable& operator=(not_indirectly_readable&&) = default;
+
+  not_indirectly_readable(not_indirectly_readable const&) = delete;
+  not_indirectly_readable& operator=(not_indirectly_readable const&) = delete;
+
+  int operator*() const;
+
+  not_indirectly_readable& operator++();
+  void operator++(int);
+};
+static_assert(!std::indirectly_readable<not_indirectly_readable> && !std::input_iterator<not_indirectly_readable>);
+
+struct bad_iterator_category {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_category = void;
+
+  bad_iterator_category() = default;
+
+  bad_iterator_category(bad_iterator_category&&) = default;
+  bad_iterator_category& operator=(bad_iterator_category&&) = default;
+
+  bad_iterator_category(bad_iterator_category const&) = delete;
+  bad_iterator_category& operator=(bad_iterator_category const&) = delete;
+
+  value_type operator*() const;
+
+  bad_iterator_category& operator++();
+  void operator++(int);
+};
+static_assert(!std::input_iterator<bad_iterator_category>);
+
+struct bad_iterator_concept {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = void*;
+
+  bad_iterator_concept() = default;
+
+  bad_iterator_concept(bad_iterator_concept&&) = default;
+  bad_iterator_concept& operator=(bad_iterator_concept&&) = default;
+
+  bad_iterator_concept(bad_iterator_concept const&) = delete;
+  bad_iterator_concept& operator=(bad_iterator_concept const&) = delete;
+
+  value_type operator*() const;
+
+  bad_iterator_concept& operator++();
+  void operator++(int);
+};
+static_assert(!std::input_iterator<bad_iterator_concept>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.input/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.input/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..a09ea64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.input/subsumption.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept input_iterator;
+
+#include <iterator>
+
+#include <concepts>
+
+// clang-format off
+template<std::input_or_output_iterator I>
+requires std::indirectly_readable<I>
+constexpr bool check_subsumption() {
+  return false;
+}
+
+template<std::input_iterator>
+constexpr bool check_subsumption() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.iterator/input_or_output_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.iterator/input_or_output_iterator.compile.pass.cpp
new file mode 100644
index 0000000..b8df4fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.iterator/input_or_output_iterator.compile.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In>
+// concept input_or_output_iterator;
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+static_assert(std::input_or_output_iterator<int*>);
+static_assert(std::input_or_output_iterator<int const*>);
+static_assert(std::input_or_output_iterator<int volatile*>);
+static_assert(std::input_or_output_iterator<int const volatile*>);
+
+static_assert(std::input_or_output_iterator<cpp17_input_iterator<int*> >);
+static_assert(std::input_or_output_iterator<cpp17_input_iterator<int const*> >);
+static_assert(std::input_or_output_iterator<cpp17_input_iterator<int volatile*> >);
+static_assert(std::input_or_output_iterator<cpp17_input_iterator<int const volatile*> >);
+
+static_assert(std::input_or_output_iterator<forward_iterator<int*> >);
+static_assert(std::input_or_output_iterator<forward_iterator<int const*> >);
+static_assert(std::input_or_output_iterator<forward_iterator<int volatile*> >);
+static_assert(std::input_or_output_iterator<forward_iterator<int const volatile*> >);
+
+static_assert(std::input_or_output_iterator<bidirectional_iterator<int*> >);
+static_assert(std::input_or_output_iterator<bidirectional_iterator<int const*> >);
+static_assert(std::input_or_output_iterator<bidirectional_iterator<int volatile*> >);
+static_assert(std::input_or_output_iterator<bidirectional_iterator<int const volatile*> >);
+
+static_assert(std::input_or_output_iterator<random_access_iterator<int*> >);
+static_assert(std::input_or_output_iterator<random_access_iterator<int const*> >);
+static_assert(std::input_or_output_iterator<random_access_iterator<int volatile*> >);
+static_assert(std::input_or_output_iterator<random_access_iterator<int const volatile*> >);
+
+static_assert(!std::input_or_output_iterator<void*>);
+static_assert(!std::input_or_output_iterator<void const*>);
+static_assert(!std::input_or_output_iterator<void volatile*>);
+static_assert(!std::input_or_output_iterator<void const volatile*>);
+
+struct S {};
+static_assert(!std::input_or_output_iterator<S>);
+static_assert(!std::input_or_output_iterator<int S::*>);
+static_assert(!std::input_or_output_iterator<int (S::*)()>);
+static_assert(!std::input_or_output_iterator<int (S::*)() const>);
+static_assert(!std::input_or_output_iterator<int (S::*)() volatile>);
+
+struct missing_dereference {
+  using difference_type = std::ptrdiff_t;
+
+  missing_dereference& operator++();
+  missing_dereference& operator++(int);
+};
+static_assert(std::weakly_incrementable<missing_dereference> && !std::input_or_output_iterator<missing_dereference>);
+
+struct void_dereference {
+  using difference_type = std::ptrdiff_t;
+
+  void operator*();
+  void_dereference& operator++();
+  void_dereference& operator++(int);
+};
+static_assert(std::weakly_incrementable<void_dereference> && !std::input_or_output_iterator<void_dereference>);
+
+struct not_weakly_incrementable {
+  int operator*() const;
+};
+static_assert(!std::input_or_output_iterator<not_weakly_incrementable>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.iterator/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.iterator/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..10a02bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.iterator/subsumption.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In>
+// concept input_or_output_iterator;
+
+#include <iterator>
+
+// clang-format off
+template<std::weakly_incrementable>
+constexpr bool check_subsumption() {
+  return false;
+}
+
+template<std::input_or_output_iterator>
+constexpr bool check_subsumption() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_subsumption<int*>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.output/output_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.output/output_iterator.compile.pass.cpp
new file mode 100644
index 0000000..19e989d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.output/output_iterator.compile.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class It, class T>
+// concept output_iterator;
+
+#include <iterator>
+
+#include <cstddef>
+#include "test_iterators.h"
+
+struct T { };
+struct DerivedFromT : T { };
+
+static_assert( std::output_iterator<cpp17_output_iterator<int*>, int>);
+static_assert( std::output_iterator<cpp17_output_iterator<int*>, short>);
+static_assert( std::output_iterator<cpp17_output_iterator<int*>, long>);
+static_assert( std::output_iterator<cpp17_output_iterator<T*>, T>);
+static_assert(!std::output_iterator<cpp17_output_iterator<T const*>, T>);
+static_assert( std::output_iterator<cpp17_output_iterator<T*>, T const>);
+static_assert( std::output_iterator<cpp17_output_iterator<T*>, DerivedFromT>);
+static_assert(!std::output_iterator<cpp17_output_iterator<DerivedFromT*>, T>);
+
+static_assert( std::output_iterator<cpp20_output_iterator<int*>, int>);
+static_assert( std::output_iterator<cpp20_output_iterator<int*>, short>);
+static_assert( std::output_iterator<cpp20_output_iterator<int*>, long>);
+static_assert( std::output_iterator<cpp20_output_iterator<T*>, T>);
+static_assert(!std::output_iterator<cpp20_output_iterator<T const*>, T>);
+static_assert( std::output_iterator<cpp20_output_iterator<T*>, T const>);
+static_assert( std::output_iterator<cpp20_output_iterator<T*>, DerivedFromT>);
+static_assert(!std::output_iterator<cpp20_output_iterator<DerivedFromT*>, T>);
+
+// Not satisfied when the iterator is not an input_or_output_iterator
+static_assert(!std::output_iterator<void, int>);
+static_assert(!std::output_iterator<void (*)(), int>);
+static_assert(!std::output_iterator<int&, int>);
+static_assert(!std::output_iterator<T, int>);
+
+// Not satisfied when we can't assign a T to the result of *it++
+struct WrongPostIncrement {
+    using difference_type = std::ptrdiff_t;
+    T const* operator++(int);
+    WrongPostIncrement& operator++();
+    T& operator*();
+};
+static_assert( std::input_or_output_iterator<WrongPostIncrement>);
+static_assert( std::indirectly_writable<WrongPostIncrement, T>);
+static_assert(!std::output_iterator<WrongPostIncrement, T>);
+
+// Not satisfied when we can't assign a T to the result of *it (i.e. not indirectly_writable)
+struct NotIndirectlyWritable {
+    using difference_type = std::ptrdiff_t;
+    T* operator++(int);
+    NotIndirectlyWritable& operator++();
+    T const& operator*(); // const so we can't write to it
+};
+static_assert( std::input_or_output_iterator<NotIndirectlyWritable>);
+static_assert(!std::indirectly_writable<NotIndirectlyWritable, T>);
+static_assert(!std::output_iterator<NotIndirectlyWritable, T>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/contiguous_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/contiguous_iterator.compile.pass.cpp
new file mode 100644
index 0000000..e442344
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/contiguous_iterator.compile.pass.cpp
@@ -0,0 +1,255 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept contiguous_iterator;
+
+#include <iterator>
+#include <compare>
+#include <memory>
+
+#include "test_iterators.h"
+
+static_assert(!std::contiguous_iterator<cpp17_input_iterator<int*>>);
+static_assert(!std::contiguous_iterator<cpp20_input_iterator<int*>>);
+static_assert(!std::contiguous_iterator<forward_iterator<int*>>);
+static_assert(!std::contiguous_iterator<bidirectional_iterator<int*>>);
+static_assert(!std::contiguous_iterator<random_access_iterator<int*>>);
+static_assert(std::contiguous_iterator<contiguous_iterator<int*>>);
+
+static_assert(std::contiguous_iterator<int*>);
+static_assert(std::contiguous_iterator<int const*>);
+static_assert(std::contiguous_iterator<int volatile*>);
+static_assert(std::contiguous_iterator<int const volatile*>);
+
+struct simple_contiguous_iterator {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef int                             value_type;
+    typedef int                             element_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef simple_contiguous_iterator      self;
+
+    simple_contiguous_iterator();
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+static_assert(std::random_access_iterator<simple_contiguous_iterator>);
+static_assert(std::contiguous_iterator<simple_contiguous_iterator>);
+
+struct mismatch_value_iter_ref_t {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef short                           value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef mismatch_value_iter_ref_t       self;
+
+    mismatch_value_iter_ref_t();
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+static_assert(std::random_access_iterator<mismatch_value_iter_ref_t>);
+static_assert(!std::contiguous_iterator<mismatch_value_iter_ref_t>);
+
+struct wrong_iter_reference_t {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef short                           value_type;
+    typedef short                           element_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef short*                          pointer;
+    typedef int&                            reference;
+    typedef wrong_iter_reference_t          self;
+
+    wrong_iter_reference_t();
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+static_assert(std::random_access_iterator<wrong_iter_reference_t>);
+static_assert(!std::contiguous_iterator<wrong_iter_reference_t>);
+
+struct to_address_wrong_return_type {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef int                             value_type;
+    typedef int                             element_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef to_address_wrong_return_type    self;
+
+    to_address_wrong_return_type();
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+template<>
+struct std::pointer_traits<to_address_wrong_return_type> {
+  typedef void element_type;
+  static void *to_address(to_address_wrong_return_type const&);
+};
+
+static_assert(std::random_access_iterator<to_address_wrong_return_type>);
+static_assert(!std::contiguous_iterator<to_address_wrong_return_type>);
+
+template<class>
+struct template_and_no_element_type {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef template_and_no_element_type    self;
+
+    template_and_no_element_type();
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type, self) { return self{}; }
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+// Template param is used instead of element_type.
+static_assert(std::random_access_iterator<template_and_no_element_type<int>>);
+static_assert(std::contiguous_iterator<template_and_no_element_type<int>>);
+
+template <bool DisableArrow, bool DisableToAddress>
+struct no_operator_arrow {
+    typedef std::contiguous_iterator_tag    iterator_category;
+    typedef int                             value_type;
+    typedef int                             element_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef no_operator_arrow               self;
+
+    no_operator_arrow();
+
+    reference operator*() const;
+    pointer operator->() const requires (!DisableArrow);
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    // Note: it's a template function to prevent a GCC warning ("friend declaration declares a non-template function").
+    template <bool B1, bool B2>
+    friend no_operator_arrow<B1, B2> operator+(difference_type n, no_operator_arrow<B1, B2> x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self& n) const;
+
+    reference operator[](difference_type n) const;
+};
+
+template<>
+struct std::pointer_traits<no_operator_arrow</*DisableArrow=*/true, /*DisableToAddress=*/false>> {
+  static constexpr int *to_address(const no_operator_arrow<true, false>&);
+};
+
+static_assert(std::contiguous_iterator<no_operator_arrow</*DisableArrow=*/false, /*DisableToAddress=*/true>>);
+static_assert(!std::contiguous_iterator<no_operator_arrow</*DisableArrow=*/true, /*DisableToAddress=*/true>>);
+static_assert(std::contiguous_iterator<no_operator_arrow</*DisableArrow=*/true, /*DisableToAddress=*/false>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/random_access_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/random_access_iterator.compile.pass.cpp
new file mode 100644
index 0000000..e42fd8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.random.access/random_access_iterator.compile.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept random_access_iterator;
+
+#include <iterator>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+static_assert(!std::random_access_iterator<cpp17_input_iterator<int*>>);
+static_assert(!std::random_access_iterator<cpp20_input_iterator<int*>>);
+static_assert(!std::random_access_iterator<forward_iterator<int*>>);
+static_assert(!std::random_access_iterator<bidirectional_iterator<int*>>);
+static_assert( std::random_access_iterator<random_access_iterator<int*>>);
+static_assert( std::random_access_iterator<contiguous_iterator<int*>>);
+
+static_assert(std::random_access_iterator<int*>);
+static_assert(std::random_access_iterator<int const*>);
+static_assert(std::random_access_iterator<int volatile*>);
+static_assert(std::random_access_iterator<int const volatile*>);
+
+struct wrong_iterator_category {
+    typedef std::bidirectional_iterator_tag iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef wrong_iterator_category         self;
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+
+    reference operator[](difference_type n) const;
+};
+static_assert(std::bidirectional_iterator<wrong_iterator_category>);
+static_assert(!std::random_access_iterator<wrong_iterator_category>);
+
+template<class Child>
+struct common_base {
+    typedef std::random_access_iterator_tag iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef Child                           self;
+
+    reference operator*() const;
+    pointer operator->() const;
+    self& operator++();
+    self operator++(int);
+    self& operator--();
+    self operator--(int);
+    auto operator<=>(const common_base&) const = default;
+};
+
+struct simple_random_access_iterator : common_base<simple_random_access_iterator> {
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert(std::bidirectional_iterator<simple_random_access_iterator>);
+static_assert(std::random_access_iterator<simple_random_access_iterator>);
+
+struct no_plus_equals : common_base<no_plus_equals> {
+ /* self& operator+=(difference_type n); */
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<no_plus_equals>);
+static_assert(!std::random_access_iterator<no_plus_equals>);
+
+struct no_plus_difference_type : common_base<no_plus_difference_type> {
+    self& operator+=(difference_type n);
+ /* self operator+(difference_type n) const; */
+    friend self operator+(difference_type n, self x);
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<no_plus_difference_type>);
+static_assert(!std::random_access_iterator<no_plus_difference_type>);
+
+struct difference_type_no_plus : common_base<difference_type_no_plus> {
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+ /* friend self operator+(difference_type n, self x); */
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<difference_type_no_plus>);
+static_assert(!std::random_access_iterator<difference_type_no_plus>);
+
+struct no_minus_equals : common_base<no_minus_equals> {
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+ /* self& operator-=(difference_type n); */
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<no_minus_equals>);
+static_assert(!std::random_access_iterator<no_minus_equals>);
+
+struct no_minus : common_base<no_minus> {
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+    self& operator-=(difference_type n);
+ /* self operator-(difference_type n) const; */
+    difference_type operator-(const self&) const;
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<no_minus>);
+static_assert(!std::random_access_iterator<no_minus>);
+
+struct not_sized_sentinel : common_base<not_sized_sentinel> {
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+ /* difference_type operator-(const self&) const; */
+    reference operator[](difference_type n) const;
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<not_sized_sentinel>);
+static_assert(!std::random_access_iterator<not_sized_sentinel>);
+
+struct no_subscript : common_base<no_subscript> {
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+ /* reference operator[](difference_type n) const; */
+    auto operator<=>(const self&) const = default;
+};
+static_assert( std::bidirectional_iterator<no_subscript>);
+static_assert(!std::random_access_iterator<no_subscript>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.readable/indirectly_readable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.readable/indirectly_readable.compile.pass.cpp
new file mode 100644
index 0000000..e062344
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.readable/indirectly_readable.compile.pass.cpp
@@ -0,0 +1,197 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In>
+// concept indirectly_readable;
+
+#include <concepts>
+#include <iterator>
+#include <type_traits>
+
+#include "read_write.h"
+
+template <class In>
+constexpr bool check_indirectly_readable() {
+  constexpr bool result = std::indirectly_readable<In>;
+  static_assert(std::indirectly_readable<In const> == result);
+  static_assert(std::indirectly_readable<In volatile> == result);
+  static_assert(std::indirectly_readable<In const volatile> == result);
+  static_assert(std::indirectly_readable<In const&> == result);
+  static_assert(std::indirectly_readable<In volatile&> == result);
+  static_assert(std::indirectly_readable<In const volatile&> == result);
+  static_assert(std::indirectly_readable<In const&&> == result);
+  static_assert(std::indirectly_readable<In volatile&&> == result);
+  static_assert(std::indirectly_readable<In const volatile&&> == result);
+  return result;
+}
+
+static_assert(!check_indirectly_readable<void*>());
+static_assert(!check_indirectly_readable<void const*>());
+static_assert(!check_indirectly_readable<void volatile*>());
+static_assert(!check_indirectly_readable<void const volatile*>());
+
+static_assert(check_indirectly_readable<int*>());
+static_assert(check_indirectly_readable<int const*>());
+static_assert(check_indirectly_readable<int volatile*>());
+static_assert(check_indirectly_readable<int const volatile*>());
+
+static_assert(check_indirectly_readable<value_type_indirection>());
+static_assert(check_indirectly_readable<element_type_indirection>());
+static_assert(check_indirectly_readable<proxy_indirection>());
+static_assert(check_indirectly_readable<read_only_indirection>());
+
+struct indirection_mismatch {
+  using value_type = int;
+  float& operator*() const;
+};
+static_assert(!std::same_as<std::iter_value_t<indirection_mismatch>, std::iter_reference_t<indirection_mismatch> > &&
+              check_indirectly_readable<indirection_mismatch>());
+static_assert(!check_indirectly_readable<missing_dereference>());
+
+// `iter_rvalue_reference_t` can't be missing unless the dereference operator is also missing.
+
+struct iter_move_mismatch {
+  using value_type = int;
+  value_type& operator*() const;
+
+  friend float& iter_move(iter_move_mismatch&);
+};
+static_assert(!check_indirectly_readable<iter_move_mismatch>());
+
+struct indirection_and_iter_move_mismatch {
+  using value_type = int;
+  float& operator*() const;
+
+  friend unsigned long long& iter_move(indirection_and_iter_move_mismatch&);
+};
+static_assert(!check_indirectly_readable<indirection_and_iter_move_mismatch>());
+
+struct missing_iter_value_t {
+  int operator*() const;
+};
+static_assert(!check_indirectly_readable<missing_iter_value_t>());
+
+struct unrelated_lvalue_ref_and_rvalue_ref {};
+
+struct iter_ref1 {};
+namespace std {
+template <>
+struct common_reference<iter_ref1&, iter_ref1&&> {};
+
+template <>
+struct common_reference<iter_ref1&&, iter_ref1&> {};
+} // namespace std
+static_assert(!std::common_reference_with<iter_ref1&, iter_ref1&&>);
+
+struct bad_iter_reference_t {
+  using value_type = int;
+  iter_ref1& operator*() const;
+};
+static_assert(!check_indirectly_readable<bad_iter_reference_t>());
+
+struct iter_ref2 {};
+struct iter_rvalue_ref {};
+
+struct unrelated_iter_ref_rvalue_and_iter_rvalue_ref_rvalue {
+  using value_type = iter_ref2;
+  iter_ref2& operator*() const;
+  friend iter_rvalue_ref&& iter_move(unrelated_iter_ref_rvalue_and_iter_rvalue_ref_rvalue);
+};
+static_assert(!check_indirectly_readable<unrelated_iter_ref_rvalue_and_iter_rvalue_ref_rvalue>());
+
+struct iter_ref3 {
+  operator iter_rvalue_ref() const;
+};
+namespace std {
+template <template <class> class XQual, template <class> class YQual>
+struct basic_common_reference<iter_ref3, iter_rvalue_ref, XQual, YQual> {
+  using type = iter_rvalue_ref;
+};
+template <template <class> class XQual, template <class> class YQual>
+struct basic_common_reference<iter_rvalue_ref, iter_ref3, XQual, YQual> {
+  using type = iter_rvalue_ref;
+};
+} // namespace std
+static_assert(std::common_reference_with<iter_ref3&&, iter_rvalue_ref&&>);
+
+struct different_reference_types_with_common_reference {
+  using value_type = iter_ref3;
+  iter_ref3& operator*() const;
+  friend iter_rvalue_ref&& iter_move(different_reference_types_with_common_reference);
+};
+static_assert(check_indirectly_readable<different_reference_types_with_common_reference>());
+
+struct iter_ref4 {
+  operator iter_rvalue_ref() const;
+};
+namespace std {
+template <template <class> class XQual, template <class> class YQual>
+struct basic_common_reference<iter_ref4, iter_rvalue_ref, XQual, YQual> {
+  using type = iter_rvalue_ref;
+};
+template <template <class> class XQual, template <class> class YQual>
+struct basic_common_reference<iter_rvalue_ref, iter_ref4, XQual, YQual> {
+  using type = iter_rvalue_ref;
+};
+
+template <>
+struct common_reference<iter_ref4 const&, iter_rvalue_ref&&> {};
+template <>
+struct common_reference<iter_rvalue_ref&&, iter_ref4 const&> {};
+} // namespace std
+static_assert(std::common_reference_with<iter_ref4&&, iter_rvalue_ref&&>);
+static_assert(!std::common_reference_with<iter_ref4 const&, iter_rvalue_ref&&>);
+
+struct different_reference_types_without_common_reference_to_const {
+  using value_type = iter_ref4;
+  iter_ref4& operator*() const;
+  friend iter_rvalue_ref&& iter_move(different_reference_types_without_common_reference_to_const);
+};
+static_assert(!check_indirectly_readable<different_reference_types_without_common_reference_to_const>());
+
+struct non_const_deref {
+  int& operator*();
+};
+static_assert(!check_indirectly_readable<non_const_deref>());
+
+struct not_referenceable {
+  using value_type = void;
+  void operator*() const;
+};
+static_assert(!std::indirectly_readable<not_referenceable>);
+
+struct legacy_output_iterator {
+  using value_type = void;
+  legacy_output_iterator& operator*();
+};
+
+static_assert(!std::indirectly_readable<legacy_output_iterator>);
+
+struct S {};
+static_assert(!std::indirectly_readable<S>);
+static_assert(!std::indirectly_readable<int S::*>);
+static_assert(!std::indirectly_readable<int (S::*)()>);
+static_assert(!std::indirectly_readable<int (S::*)() noexcept>);
+static_assert(!std::indirectly_readable<int (S::*)() &>);
+static_assert(!std::indirectly_readable<int (S::*)() & noexcept>);
+static_assert(!std::indirectly_readable<int (S::*)() &&>);
+static_assert(!std::indirectly_readable < int (S::*)() && noexcept >);
+static_assert(!std::indirectly_readable<int (S::*)() const>);
+static_assert(!std::indirectly_readable<int (S::*)() const noexcept>);
+static_assert(!std::indirectly_readable<int (S::*)() const&>);
+static_assert(!std::indirectly_readable<int (S::*)() const & noexcept>);
+static_assert(!std::indirectly_readable<int (S::*)() const&&>);
+static_assert(!std::indirectly_readable < int (S::*)() const&& noexcept >);
+static_assert(!std::indirectly_readable<int (S::*)() volatile>);
+static_assert(!std::indirectly_readable<int (S::*)() volatile noexcept>);
+static_assert(!std::indirectly_readable<int (S::*)() volatile&>);
+static_assert(!std::indirectly_readable<int (S::*)() volatile & noexcept>);
+static_assert(!std::indirectly_readable<int (S::*)() volatile&&>);
+static_assert(!std::indirectly_readable < int (S::*)() volatile&& noexcept >);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.readable/iter_common_reference_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.readable/iter_common_reference_t.compile.pass.cpp
new file mode 100644
index 0000000..e6302e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.readable/iter_common_reference_t.compile.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iter_common_reference_t
+
+#include <concepts>
+#include <iterator>
+#include <type_traits>
+
+struct X { };
+
+// value_type and dereferencing are the same
+struct T1 {
+  using value_type = X;
+  X operator*() const;
+};
+static_assert(std::same_as<std::iter_common_reference_t<T1>, X>);
+
+// value_type and dereferencing are the same (modulo qualifiers)
+struct T2 {
+  using value_type = X;
+  X& operator*() const;
+};
+static_assert(std::same_as<std::iter_common_reference_t<T2>, X&>);
+
+// There's a custom common reference between value_type and the type of dereferencing
+struct A { };
+struct B { };
+struct Common { Common(A); Common(B); };
+template <template <class> class TQual, template <class> class QQual>
+struct std::basic_common_reference<A, B, TQual, QQual> {
+  using type = Common;
+};
+template <template <class> class TQual, template <class> class QQual>
+struct std::basic_common_reference<B, A, TQual, QQual>
+  : std::basic_common_reference<A, B, TQual, QQual>
+{ };
+
+struct T3 {
+  using value_type = A;
+  B&& operator*() const;
+};
+static_assert(std::same_as<std::iter_common_reference_t<T3>, Common>);
+
+// Make sure we're SFINAE-friendly
+template <class T>
+constexpr bool has_common_reference = requires {
+  typename std::iter_common_reference_t<T>;
+};
+struct NotIndirectlyReadable { };
+static_assert(!has_common_reference<NotIndirectlyReadable>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sentinel_for.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sentinel_for.compile.pass.cpp
new file mode 100644
index 0000000..3688256
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sentinel_for.compile.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class S, class I>
+// concept sentinel_for;
+
+#include <iterator>
+
+static_assert(std::sentinel_for<int*, int*>);
+static_assert(!std::sentinel_for<int*, long*>);
+struct nth_element_sentinel {
+  bool operator==(int*) const;
+};
+static_assert(std::sentinel_for<nth_element_sentinel, int*>);
+static_assert(std::sentinel_for<nth_element_sentinel, int*>);
+
+struct not_semiregular {
+  not_semiregular() = delete;
+  bool operator==(int*) const;
+};
+static_assert(!std::sentinel_for<not_semiregular, int*>);
+
+struct weakly_equality_comparable_with_int {
+  bool operator==(int) const;
+};
+static_assert(!std::sentinel_for<weakly_equality_comparable_with_int, int>);
+
+struct move_only_iterator {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+
+  move_only_iterator() = default;
+
+  move_only_iterator(move_only_iterator&&) = default;
+  move_only_iterator& operator=(move_only_iterator&&) = default;
+
+  move_only_iterator(move_only_iterator const&) = delete;
+  move_only_iterator& operator=(move_only_iterator const&) = delete;
+
+  value_type operator*() const;
+  move_only_iterator& operator++();
+  move_only_iterator operator++(int);
+
+  bool operator==(move_only_iterator const&) const = default;
+};
+static_assert(std::movable<move_only_iterator> && !std::copyable<move_only_iterator> &&
+              std::input_or_output_iterator<move_only_iterator> &&
+              !std::sentinel_for<move_only_iterator, move_only_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sentinel_for.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sentinel_for.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..58177f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sentinel_for.subsumption.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class S, class I>
+// concept sentinel_for;
+
+#include <iterator>
+
+#include <concepts>
+#include <vector>
+
+// clang-format off
+template<std::input_or_output_iterator, std::semiregular>
+constexpr bool check_sentinel_subsumption() {
+  return false;
+}
+
+template<class I, std::sentinel_for<I> >
+constexpr bool check_subsumption() {
+  return true;
+}
+// clang-format on
+
+static_assert(check_subsumption<std::vector<int>::iterator, std::vector<int>::iterator>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sized_sentinel_for.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sized_sentinel_for.compile.pass.cpp
new file mode 100644
index 0000000..211a063
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.sentinel/sized_sentinel_for.compile.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// [iterator.concept.sizedsentinel], concept sized_sentinel_for
+//
+// template<class S, class I>
+//   inline constexpr bool disable_sized_sentinel_for = false;
+//
+// template<class S, class I>
+//   concept sized_sentinel_for = see below;
+
+#include <iterator>
+
+#include <array>
+#include <concepts>
+#include <deque>
+#include <string>
+#include <string_view>
+#include <vector>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+static_assert(std::sized_sentinel_for<random_access_iterator<int*>, random_access_iterator<int*> >);
+static_assert(!std::sized_sentinel_for<bidirectional_iterator<int*>, bidirectional_iterator<int*> >);
+
+struct int_sized_sentinel {
+  friend bool operator==(int_sized_sentinel, int*);
+  friend std::ptrdiff_t operator-(int_sized_sentinel, int*);
+  friend std::ptrdiff_t operator-(int*, int_sized_sentinel);
+};
+static_assert(std::sized_sentinel_for<int_sized_sentinel, int*>);
+// int_sized_sentinel is not an iterator.
+static_assert(!std::sized_sentinel_for<int*, int_sized_sentinel>);
+
+struct no_default_ctor {
+  no_default_ctor() = delete;
+  bool operator==(std::input_or_output_iterator auto) const;
+};
+static_assert(!std::sized_sentinel_for<no_default_ctor, int*>);
+
+struct not_copyable {
+  not_copyable() = default;
+  not_copyable(not_copyable const&) = delete;
+  bool operator==(std::input_or_output_iterator auto) const;
+};
+static_assert(!std::sized_sentinel_for<not_copyable, int*>);
+
+struct double_sized_sentinel {
+  friend bool operator==(double_sized_sentinel, double*);
+  friend int operator-(double_sized_sentinel, double*);
+  friend int operator-(double*, double_sized_sentinel);
+};
+template <>
+inline constexpr bool std::disable_sized_sentinel_for<double_sized_sentinel, double*> = true;
+
+static_assert(!std::sized_sentinel_for<double_sized_sentinel, double*>);
+
+struct only_one_sub_op {
+  friend bool operator==(only_one_sub_op, std::input_or_output_iterator auto);
+  friend std::ptrdiff_t operator-(only_one_sub_op, std::input_or_output_iterator auto);
+};
+static_assert(!std::sized_sentinel_for<only_one_sub_op, int*>);
+
+struct wrong_return_type {
+  friend bool operator==(wrong_return_type, std::input_or_output_iterator auto);
+  friend std::ptrdiff_t operator-(wrong_return_type, std::input_or_output_iterator auto);
+  friend void operator-(std::input_or_output_iterator auto, wrong_return_type);
+};
+static_assert(!std::sized_sentinel_for<wrong_return_type, int*>);
+
+// Standard types
+static_assert(std::sized_sentinel_for<int*, int*>);
+static_assert(std::sized_sentinel_for<const int*, int*>);
+static_assert(std::sized_sentinel_for<const int*, const int*>);
+static_assert(std::sized_sentinel_for<int*, const int*>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.winc/weakly_incrementable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.winc/weakly_incrementable.compile.pass.cpp
new file mode 100644
index 0000000..22b3ae9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.winc/weakly_incrementable.compile.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In>
+// concept std::weakly_incrementable;
+
+#include <iterator>
+
+#include <concepts>
+#include <memory>
+#include <optional>
+
+#include "../incrementable.h"
+
+static_assert(std::weakly_incrementable<int>);
+static_assert(std::weakly_incrementable<int*>);
+static_assert(std::weakly_incrementable<int**>);
+static_assert(!std::weakly_incrementable<int[]>);
+static_assert(!std::weakly_incrementable<int[10]>);
+static_assert(!std::weakly_incrementable<double>);
+static_assert(!std::weakly_incrementable<int&>);
+static_assert(!std::weakly_incrementable<int()>);
+static_assert(!std::weakly_incrementable<int (*)()>);
+static_assert(!std::weakly_incrementable<int (&)()>);
+static_assert(!std::weakly_incrementable<bool>);
+
+struct S {};
+static_assert(!std::weakly_incrementable<int S::*>);
+
+#define CHECK_POINTER_TO_MEMBER_FUNCTIONS(qualifier)                                                                   \
+  static_assert(!std::weakly_incrementable<int (S::*)() qualifier>);                                                   \
+  static_assert(!std::weakly_incrementable<int (S::*)() qualifier noexcept>);                                          \
+  static_assert(!std::weakly_incrementable<int (S::*)() qualifier&>);                                                  \
+  static_assert(!std::weakly_incrementable<int (S::*)() qualifier & noexcept>);                                        \
+  static_assert(!std::weakly_incrementable<int (S::*)() qualifier&&>);                                                 \
+  static_assert(!std::weakly_incrementable < int (S::*)() qualifier&& noexcept >);
+
+#define NO_QUALIFIER
+CHECK_POINTER_TO_MEMBER_FUNCTIONS(NO_QUALIFIER);
+CHECK_POINTER_TO_MEMBER_FUNCTIONS(const);
+CHECK_POINTER_TO_MEMBER_FUNCTIONS(volatile);
+CHECK_POINTER_TO_MEMBER_FUNCTIONS(const volatile);
+
+static_assert(std::weakly_incrementable<postfix_increment_returns_void>);
+static_assert(std::weakly_incrementable<postfix_increment_returns_copy>);
+static_assert(std::weakly_incrementable<has_integral_minus>);
+static_assert(std::weakly_incrementable<has_distinct_difference_type_and_minus>);
+static_assert(!std::weakly_incrementable<missing_difference_type>);
+static_assert(!std::weakly_incrementable<floating_difference_type>);
+static_assert(!std::weakly_incrementable<non_const_minus>);
+static_assert(!std::weakly_incrementable<non_integral_minus>);
+static_assert(!std::weakly_incrementable<bad_difference_type_good_minus>);
+static_assert(!std::weakly_incrementable<not_movable>);
+static_assert(!std::weakly_incrementable<preinc_not_declared>);
+static_assert(!std::weakly_incrementable<postinc_not_declared>);
+static_assert(std::weakly_incrementable<not_default_initializable>);
+static_assert(std::weakly_incrementable<incrementable_with_difference_type>);
+static_assert(std::weakly_incrementable<incrementable_without_difference_type>);
+static_assert(std::weakly_incrementable<difference_type_and_void_minus>);
+static_assert(std::weakly_incrementable<noncopyable_with_difference_type>);
+static_assert(std::weakly_incrementable<noncopyable_without_difference_type>);
+static_assert(std::weakly_incrementable<noncopyable_with_difference_type_and_minus>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.writable/indirectly_writable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.writable/indirectly_writable.compile.pass.cpp
new file mode 100644
index 0000000..51b3c9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.concepts/iterator.concept.writable/indirectly_writable.compile.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class In>
+// concept indirectly_writable;
+
+#include <iterator>
+
+#include <concepts>
+#include <memory>
+#include <optional>
+
+#include "read_write.h"
+
+template <class Out, class T>
+constexpr bool check_indirectly_writable() {
+  constexpr bool result = std::indirectly_writable<Out, T>;
+  static_assert(std::indirectly_writable<Out const, T> == result);
+  return result;
+}
+
+static_assert(check_indirectly_writable<value_type_indirection, int>());
+static_assert(check_indirectly_writable<value_type_indirection, double>());
+static_assert(!check_indirectly_writable<value_type_indirection, double*>());
+
+static_assert(!check_indirectly_writable<read_only_indirection, int>());
+static_assert(!check_indirectly_writable<proxy_indirection, int>());
+
+static_assert(!check_indirectly_writable<int, int>());
+static_assert(!check_indirectly_writable<missing_dereference, missing_dereference::value_type>());
+
+static_assert(!check_indirectly_writable<void*, int>());
+static_assert(!check_indirectly_writable<void const*, int>());
+static_assert(!check_indirectly_writable<void volatile*, int>());
+static_assert(!check_indirectly_writable<void const volatile*, int>());
+static_assert(!check_indirectly_writable<void*, double>());
+static_assert(check_indirectly_writable<void**, int*>());
+static_assert(!check_indirectly_writable<void**, int>());
+
+static_assert(check_indirectly_writable<int*, int>());
+static_assert(!check_indirectly_writable<int const*, int>());
+static_assert(check_indirectly_writable<int volatile*, int>());
+static_assert(!check_indirectly_writable<int const volatile*, int>());
+static_assert(check_indirectly_writable<int*, double>());
+static_assert(check_indirectly_writable<int**, int*>());
+static_assert(!check_indirectly_writable<int**, int>());
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.nodiscard.verify.cpp
new file mode 100644
index 0000000..f531b3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.nodiscard.verify.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the [[nodiscard]] extension in libc++.
+
+// template<class I>
+// unspecified iter_move;
+
+#include <iterator>
+
+struct WithADL {
+  WithADL() = default;
+  constexpr decltype(auto) operator*() const noexcept;
+  constexpr WithADL& operator++() noexcept;
+  constexpr void operator++(int) noexcept;
+  constexpr bool operator==(WithADL const&) const noexcept;
+  friend constexpr auto iter_move(WithADL&) { return 0; }
+};
+
+int main(int, char**) {
+  int* noADL = nullptr;
+  std::ranges::iter_move(noADL); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+  WithADL adl;
+  std::ranges::iter_move(adl); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.pass.cpp
new file mode 100644
index 0000000..31ec010
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_move.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+// unspecified iter_move;
+
+#include <iterator>
+
+#include <array>
+#include <algorithm>
+#include <cassert>
+#include <utility>
+
+#include "../unqualified_lookup_wrapper.h"
+
+using IterMoveT = decltype(std::ranges::iter_move);
+
+// Wrapper around an iterator for testing `iter_move` when an unqualified call to `iter_move` isn't
+// possible.
+template <typename I>
+class iterator_wrapper {
+public:
+  iterator_wrapper() = default;
+
+  constexpr explicit iterator_wrapper(I i) noexcept : base_(std::move(i)) {}
+
+  // `noexcept(false)` is used to check that this operator is called.
+  constexpr decltype(auto) operator*() const& noexcept(false) { return *base_; }
+
+  // `noexcept` is used to check that this operator is called.
+  constexpr auto&& operator*() && noexcept { return std::move(*base_); }
+
+  constexpr iterator_wrapper& operator++() noexcept {
+    ++base_;
+    return *this;
+  }
+
+  constexpr void operator++(int) noexcept { ++base_; }
+
+  constexpr bool operator==(iterator_wrapper const& other) const noexcept { return base_ == other.base_; }
+
+private:
+  I base_ = I{};
+};
+
+template <class I>
+iterator_wrapper(I) -> iterator_wrapper<I>;
+
+template <typename It, typename Out>
+constexpr void unqualified_lookup_move(It first_, It last_, Out result_first_, Out result_last_) {
+  auto first = ::check_unqualified_lookup::unqualified_lookup_wrapper{std::move(first_)};
+  auto last = ::check_unqualified_lookup::unqualified_lookup_wrapper{std::move(last_)};
+  auto result_first = ::check_unqualified_lookup::unqualified_lookup_wrapper{std::move(result_first_)};
+  auto result_last = ::check_unqualified_lookup::unqualified_lookup_wrapper{std::move(result_last_)};
+
+  static_assert(!noexcept(std::ranges::iter_move(first)), "unqualified-lookup case not being chosen");
+
+  for (; first != last && result_first != result_last; (void)++first, ++result_first) {
+    *result_first = std::ranges::iter_move(first);
+  }
+}
+
+template <typename It, typename Out>
+constexpr void lvalue_move(It first_, It last_, Out result_first_, Out result_last_) {
+  auto first = iterator_wrapper{std::move(first_)};
+  auto last = ::iterator_wrapper{std::move(last_)};
+  auto result_first = iterator_wrapper{std::move(result_first_)};
+  auto result_last = iterator_wrapper{std::move(result_last_)};
+
+  static_assert(!noexcept(std::ranges::iter_move(first)), "`operator*() const&` is not noexcept, and there's no hidden "
+                                                          "friend iter_move.");
+
+  for (; first != last && result_first != result_last; (void)++first, ++result_first) {
+    *result_first = std::ranges::iter_move(first);
+  }
+}
+
+template <typename It, typename Out>
+constexpr void rvalue_move(It first_, It last_, Out result_first_, Out result_last_) {
+  auto first = iterator_wrapper{std::move(first_)};
+  auto last = iterator_wrapper{std::move(last_)};
+  auto result_first = iterator_wrapper{std::move(result_first_)};
+  auto result_last = iterator_wrapper{std::move(result_last_)};
+
+  static_assert(noexcept(std::ranges::iter_move(std::move(first))),
+                "`operator*() &&` is noexcept, and there's no hidden friend iter_move.");
+
+  for (; first != last && result_first != result_last; (void)++first, ++result_first) {
+    auto i = first;
+    *result_first = std::ranges::iter_move(std::move(i));
+  }
+}
+
+template <bool NoExcept>
+struct WithADL {
+  WithADL() = default;
+  constexpr int operator*() const { return 0; }
+  constexpr WithADL& operator++();
+  constexpr void operator++(int);
+  constexpr bool operator==(WithADL const&) const;
+  friend constexpr int iter_move(WithADL&&) noexcept(NoExcept) { return 0; }
+};
+
+template <bool NoExcept>
+struct WithoutADL {
+  WithoutADL() = default;
+  constexpr int operator*() const noexcept(NoExcept) { return 0; }
+  constexpr WithoutADL& operator++();
+  constexpr void operator++(int);
+  constexpr bool operator==(WithoutADL const&) const;
+};
+
+constexpr bool test() {
+  constexpr int full_size = 100;
+  constexpr int half_size = full_size / 2;
+  constexpr int reset = 0;
+  auto v1 = std::array<move_tracker, full_size>{};
+
+  auto move_counter_is = [](auto const n) { return [n](auto const& x) { return x.moves() == n; }; };
+
+  auto v2 = std::array<move_tracker, half_size>{};
+  unqualified_lookup_move(v1.begin(), v1.end(), v2.begin(), v2.end());
+  assert(std::all_of(v1.cbegin(), v1.cend(), move_counter_is(reset)));
+  assert(std::all_of(v2.cbegin(), v2.cend(), move_counter_is(1)));
+
+  auto v3 = std::array<move_tracker, half_size>{};
+  unqualified_lookup_move(v1.begin() + half_size, v1.end(), v3.begin(), v3.end());
+  assert(std::all_of(v1.cbegin(), v1.cend(), move_counter_is(reset)));
+  assert(std::all_of(v3.cbegin(), v3.cend(), move_counter_is(1)));
+
+  auto v4 = std::array<move_tracker, half_size>{};
+  unqualified_lookup_move(v3.begin(), v3.end(), v4.begin(), v4.end());
+  assert(std::all_of(v3.cbegin(), v3.cend(), move_counter_is(reset)));
+  assert(std::all_of(v4.cbegin(), v4.cend(), move_counter_is(2)));
+
+  lvalue_move(v2.begin(), v2.end(), v1.begin() + half_size, v1.end());
+  assert(std::all_of(v2.cbegin(), v2.cend(), move_counter_is(reset)));
+  assert(std::all_of(v1.cbegin() + half_size, v1.cend(), move_counter_is(2)));
+
+  lvalue_move(v4.begin(), v4.end(), v1.begin(), v1.end());
+  assert(std::all_of(v4.cbegin(), v4.cend(), move_counter_is(reset)));
+  assert(std::all_of(v1.cbegin(), v1.cbegin() + half_size, move_counter_is(3)));
+
+  rvalue_move(v1.begin(), v1.end(), v2.begin(), v2.end());
+  assert(std::all_of(v1.cbegin(), v1.cbegin() + half_size, move_counter_is(reset)));
+  assert(std::all_of(v2.cbegin(), v2.cend(), move_counter_is(4)));
+
+  rvalue_move(v1.begin() + half_size, v1.end(), v3.begin(), v3.end());
+  assert(std::all_of(v1.cbegin(), v1.cend(), move_counter_is(reset)));
+  assert(std::all_of(v3.cbegin(), v3.cend(), move_counter_is(3)));
+
+  auto unscoped = check_unqualified_lookup::unscoped_enum::a;
+  assert(std::ranges::iter_move(unscoped) == check_unqualified_lookup::unscoped_enum::a);
+  assert(!noexcept(std::ranges::iter_move(unscoped)));
+
+  auto scoped = check_unqualified_lookup::scoped_enum::a;
+  assert(std::ranges::iter_move(scoped) == nullptr);
+  assert(noexcept(std::ranges::iter_move(scoped)));
+
+  auto some_union = check_unqualified_lookup::some_union{0};
+  assert(std::ranges::iter_move(some_union) == 0);
+  assert(!noexcept(std::ranges::iter_move(some_union)));
+
+  // Check noexcept-correctness
+  static_assert(noexcept(std::ranges::iter_move(std::declval<WithADL<true>>())));
+  static_assert(!noexcept(std::ranges::iter_move(std::declval<WithADL<false>>())));
+  static_assert(noexcept(std::ranges::iter_move(std::declval<WithoutADL<true>>())));
+  static_assert(!noexcept(std::ranges::iter_move(std::declval<WithoutADL<false>>())));
+
+  return true;
+}
+
+static_assert(!std::is_invocable_v<IterMoveT, int*, int*>); // too many arguments
+static_assert(!std::is_invocable_v<IterMoveT, int>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(std::is_invocable_v<IterMoveT, Holder<Incomplete>**>);
+static_assert(std::is_invocable_v<IterMoveT, Holder<Incomplete>**&>);
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_rvalue_reference_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_rvalue_reference_t.compile.pass.cpp
new file mode 100644
index 0000000..5ac4f9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.move/iter_rvalue_reference_t.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+// using iter_rvalue_reference;
+
+#include <iterator>
+
+static_assert(std::same_as<std::iter_rvalue_reference_t<int*>, int&&>);
+static_assert(std::same_as<std::iter_rvalue_reference_t<const int*>, const int&&>);
+
+void test_undefined_internal() {
+  struct A {
+    int& operator*() const;
+  };
+  static_assert(std::same_as<std::iter_rvalue_reference_t<A>, int&&>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.swap/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.swap/iter_swap.pass.cpp
new file mode 100644
index 0000000..dd78707
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/iterator.cust.swap/iter_swap.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I>
+// unspecified iter_swap;
+
+#include <iterator>
+
+#include <array>
+#include <cassert>
+
+#include "../unqualified_lookup_wrapper.h"
+#include "test_iterators.h"
+
+using IterSwapT = decltype(std::ranges::iter_swap);
+
+struct HasIterSwap {
+  int &value_;
+  constexpr explicit HasIterSwap(int &value) : value_(value) { assert(value == 0); }
+
+  friend constexpr void iter_swap(HasIterSwap& a, HasIterSwap& b) {
+    a.value_ = 1;
+    b.value_ = 1;
+  }
+  friend constexpr void iter_swap(HasIterSwap& a, int& b) {
+    a.value_ = 2;
+    b = 2;
+  }
+};
+
+static_assert( std::is_invocable_v<IterSwapT, HasIterSwap&, HasIterSwap&>);
+static_assert( std::is_invocable_v<IterSwapT, HasIterSwap&, int&>);
+static_assert(!std::is_invocable_v<IterSwapT, int&, HasIterSwap&>);
+
+static_assert( std::is_invocable_v<IterSwapT&, HasIterSwap&, HasIterSwap&>);
+static_assert( std::is_invocable_v<IterSwapT&, HasIterSwap&, int&>);
+static_assert(!std::is_invocable_v<IterSwapT&, int&, HasIterSwap&>);
+
+static_assert( std::is_invocable_v<IterSwapT&&, HasIterSwap&, HasIterSwap&>);
+static_assert( std::is_invocable_v<IterSwapT&&, HasIterSwap&, int&>);
+static_assert(!std::is_invocable_v<IterSwapT&&, int&, HasIterSwap&>);
+
+struct NodiscardIterSwap {
+  [[nodiscard]] friend int iter_swap(NodiscardIterSwap&, NodiscardIterSwap&) { return 0; }
+};
+
+void ensureVoidCast(NodiscardIterSwap& a, NodiscardIterSwap& b) { std::ranges::iter_swap(a, b); }
+
+struct HasRangesSwap {
+  int &value_;
+  constexpr explicit HasRangesSwap(int &value) : value_(value) { assert(value == 0); }
+
+  friend constexpr void swap(HasRangesSwap& a, HasRangesSwap& b) {
+    a.value_ = 1;
+    b.value_ = 1;
+  }
+  friend constexpr void swap(HasRangesSwap& a, int& b) {
+    a.value_ = 2;
+    b = 2;
+  }
+};
+
+struct HasRangesSwapWrapper {
+  using value_type = HasRangesSwap;
+
+  HasRangesSwap &value_;
+  constexpr explicit HasRangesSwapWrapper(HasRangesSwap &value) : value_(value) {}
+
+  constexpr HasRangesSwap& operator*() const { return value_; }
+};
+
+static_assert( std::is_invocable_v<IterSwapT, HasRangesSwapWrapper&, HasRangesSwapWrapper&>);
+// Does not satisfy swappable_with, even though swap(X, Y) is valid.
+static_assert(!std::is_invocable_v<IterSwapT, HasRangesSwapWrapper&, int&>);
+static_assert(!std::is_invocable_v<IterSwapT, int&, HasRangesSwapWrapper&>);
+
+struct B;
+
+struct A {
+  bool value = false;
+  constexpr A& operator=(const B&) {
+    value = true;
+    return *this;
+  };
+};
+
+struct B {
+  bool value = false;
+  constexpr B& operator=(const A&) {
+    value = true;
+    return *this;
+  };
+};
+
+struct MoveOnly2;
+
+struct MoveOnly1 {
+  bool value = false;
+
+  MoveOnly1() = default;
+  MoveOnly1(MoveOnly1&&) = default;
+  MoveOnly1& operator=(MoveOnly1&&) = default;
+  MoveOnly1(const MoveOnly1&) = delete;
+  MoveOnly1& operator=(const MoveOnly1&) = delete;
+
+  constexpr MoveOnly1& operator=(MoveOnly2 &&) {
+    value = true;
+    return *this;
+  };
+};
+
+struct MoveOnly2 {
+  bool value = false;
+
+  MoveOnly2() = default;
+  MoveOnly2(MoveOnly2&&) = default;
+  MoveOnly2& operator=(MoveOnly2&&) = default;
+  MoveOnly2(const MoveOnly2&) = delete;
+  MoveOnly2& operator=(const MoveOnly2&) = delete;
+
+  constexpr MoveOnly2& operator=(MoveOnly1 &&) {
+    value = true;
+    return *this;
+  };
+};
+
+constexpr bool test()
+{
+  {
+    int value1 = 0;
+    int value2 = 0;
+    HasIterSwap a(value1), b(value2);
+    std::ranges::iter_swap(a, b);
+    assert(value1 == 1 && value2 == 1);
+  }
+  {
+    int value1 = 0;
+    int value2 = 0;
+    HasRangesSwap c(value1), d(value2);
+    HasRangesSwapWrapper cWrapper(c), dWrapper(d);
+    std::ranges::iter_swap(cWrapper, dWrapper);
+    assert(value1 == 1 && value2 == 1);
+  }
+  {
+    int value1 = 0;
+    int value2 = 0;
+    HasRangesSwap c(value1), d(value2);
+    std::ranges::iter_swap(HasRangesSwapWrapper(c), HasRangesSwapWrapper(d));
+    assert(value1 == 1 && value2 == 1);
+  }
+  {
+    A e; B f;
+    A *ePtr = &e;
+    B *fPtr = &f;
+    std::ranges::iter_swap(ePtr, fPtr);
+    assert(e.value && f.value);
+  }
+  {
+    MoveOnly1 g; MoveOnly2 h;
+    std::ranges::iter_swap(&g, &h);
+    assert(g.value && h.value);
+  }
+  {
+    auto arr = std::array<move_tracker, 2>();
+    std::ranges::iter_swap(arr.begin(), arr.begin() + 1);
+    if (std::is_constant_evaluated()) {
+      assert(arr[0].moves() == 1 && arr[1].moves() == 3);
+    } else {
+      assert(arr[0].moves() == 1 && arr[1].moves() == 2);
+    }
+  }
+  {
+    int buff[2] = {1, 2};
+    std::ranges::iter_swap(buff + 0, buff + 1);
+    assert(buff[0] == 2 && buff[1] == 1);
+
+    std::ranges::iter_swap(cpp20_input_iterator(buff), cpp20_input_iterator(buff + 1));
+    assert(buff[0] == 1 && buff[1] == 2);
+
+    std::ranges::iter_swap(cpp17_input_iterator(buff), cpp17_input_iterator(buff + 1));
+    assert(buff[0] == 2 && buff[1] == 1);
+
+    std::ranges::iter_swap(forward_iterator(buff), forward_iterator(buff + 1));
+    assert(buff[0] == 1 && buff[1] == 2);
+
+    std::ranges::iter_swap(bidirectional_iterator(buff), bidirectional_iterator(buff + 1));
+    assert(buff[0] == 2 && buff[1] == 1);
+
+    std::ranges::iter_swap(random_access_iterator(buff), random_access_iterator(buff + 1));
+    assert(buff[0] == 1 && buff[1] == 2);
+
+    std::ranges::iter_swap(contiguous_iterator(buff), contiguous_iterator(buff + 1));
+    assert(buff[0] == 2 && buff[1] == 1);
+  }
+  return true;
+}
+
+static_assert(!std::is_invocable_v<IterSwapT, int*>); // too few arguments
+static_assert(!std::is_invocable_v<IterSwapT, int*, int*, int*>); // too many arguments
+static_assert(!std::is_invocable_v<IterSwapT, int, int*>);
+static_assert(!std::is_invocable_v<IterSwapT, int*, int>);
+static_assert(!std::is_invocable_v<IterSwapT, void*, void*>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(std::is_invocable_v<IterSwapT, Holder<Incomplete>**, Holder<Incomplete>**>);
+static_assert(std::is_invocable_v<IterSwapT, Holder<Incomplete>**, Holder<Incomplete>**&>);
+static_assert(std::is_invocable_v<IterSwapT, Holder<Incomplete>**&, Holder<Incomplete>**>);
+static_assert(std::is_invocable_v<IterSwapT, Holder<Incomplete>**&, Holder<Incomplete>**&>);
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/unqualified_lookup_wrapper.h b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/unqualified_lookup_wrapper.h
new file mode 100644
index 0000000..345315c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.cust/unqualified_lookup_wrapper.h
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_STD_ITERATOR_UNQUALIFIED_LOOKUP_WRAPPER
+#define LIBCPP_TEST_STD_ITERATOR_UNQUALIFIED_LOOKUP_WRAPPER
+
+#include <iterator>
+#include <utility>
+
+namespace check_unqualified_lookup {
+// Wrapper around an iterator for testing unqualified calls to `iter_move` and `iter_swap`.
+template <typename I>
+class unqualified_lookup_wrapper {
+public:
+  unqualified_lookup_wrapper() = default;
+
+  constexpr explicit unqualified_lookup_wrapper(I i) noexcept : base_(std::move(i)) {}
+
+  constexpr decltype(auto) operator*() const noexcept { return *base_; }
+
+  constexpr unqualified_lookup_wrapper& operator++() noexcept {
+    ++base_;
+    return *this;
+  }
+
+  constexpr void operator++(int) noexcept { ++base_; }
+
+  constexpr bool operator==(unqualified_lookup_wrapper const& other) const noexcept {
+    return base_ == other.base_;
+  }
+
+  // Delegates `std::ranges::iter_move` for the underlying iterator. `noexcept(false)` will be used
+  // to ensure that the unqualified-lookup overload is chosen.
+  friend constexpr decltype(auto) iter_move(unqualified_lookup_wrapper& i) noexcept(false) {
+    return std::ranges::iter_move(i.base_);
+  }
+
+private:
+  I base_ = I{};
+};
+
+template <class It>
+unqualified_lookup_wrapper(It) -> unqualified_lookup_wrapper<It>;
+
+enum unscoped_enum { a, b, c };
+constexpr unscoped_enum iter_move(unscoped_enum& e) noexcept(false) { return e; }
+
+enum class scoped_enum { a, b, c };
+constexpr scoped_enum* iter_move(scoped_enum&) noexcept { return nullptr; }
+
+union some_union {
+  int x;
+  double y;
+};
+constexpr int iter_move(some_union& u) noexcept(false) { return u.x; }
+
+} // namespace check_unqualified_lookup
+
+class move_tracker {
+public:
+  move_tracker() = default;
+  constexpr move_tracker(move_tracker&& other) noexcept : moves_{other.moves_ + 1} { other.moves_ = 0; }
+  constexpr move_tracker& operator=(move_tracker&& other) noexcept {
+    moves_ = other.moves_ + 1;
+    other.moves_ = 0;
+    return *this;
+  }
+
+  move_tracker(move_tracker const& other) = delete;
+  move_tracker& operator=(move_tracker const& other) = delete;
+
+  constexpr int moves() const noexcept { return moves_; }
+
+private:
+  int moves_ = 0;
+};
+
+#endif // LIBCPP_TEST_STD_ITERATOR_UNQUALIFIED_LOOKUP_WRAPPER
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.iterators/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.iterators/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.iterators/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.requirements.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.requirements.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/iterator.requirements.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/output.iterators/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/output.iterators/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/output.iterators/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/random.access.iterators/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/random.access.iterators/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.requirements/random.access.iterators/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterator.synopsis/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterator.synopsis/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterator.synopsis/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/iterators.general/gcc_workaround.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/iterators.general/gcc_workaround.pass.cpp
new file mode 100644
index 0000000..09b4d76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/iterators.general/gcc_workaround.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Tests workaround for  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64816.
+
+#include <string>
+#include "test_macros.h"
+
+void f(const std::string &s) { TEST_IGNORE_NODISCARD s.begin(); }
+
+#include <vector>
+
+void AppendTo(const std::vector<char> &v) { TEST_IGNORE_NODISCARD v.begin(); }
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/arrow.pass.cpp
new file mode 100644
index 0000000..208d693
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/arrow.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto operator->() const noexcept
+//   requires contiguous_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter>
+concept ArrowEnabled = requires(Iter& iter) {
+  iter.operator->();
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    for (int i = 0; i < 8; ++i, ++iter)
+      assert(iter.operator->() == buffer + i);
+
+    static_assert(noexcept(iter.operator->()));
+  }
+  {
+    const std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    assert(iter.operator->() == buffer);
+
+    static_assert(noexcept(iter.operator->()));
+  }
+
+  {
+      static_assert( ArrowEnabled<std::counted_iterator<contiguous_iterator<int*>>>);
+      static_assert(!ArrowEnabled<std::counted_iterator<random_access_iterator<int*>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/assign.pass.cpp
new file mode 100644
index 0000000..cf74609
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/assign.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I2>
+//   requires assignable_from<I&, const I2&>
+//     constexpr counted_iterator& operator=(const counted_iterator<I2>& x);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+class AssignableFromIter
+{
+    int *it_;
+
+public:
+    typedef          std::input_iterator_tag                      iterator_category;
+    typedef int                                                   value_type;
+    typedef typename std::iterator_traits<int *>::difference_type difference_type;
+    typedef int *                                                 pointer;
+    typedef int &                                                 reference;
+
+    friend constexpr int *base(const AssignableFromIter& i) {return i.it_;}
+
+    AssignableFromIter() = default;
+    explicit constexpr AssignableFromIter(int *it) : it_(it) {}
+    constexpr AssignableFromIter(const forward_iterator<int*>& it) : it_(base(it)) {}
+
+    constexpr AssignableFromIter& operator=(const forward_iterator<int*> &other) {
+      it_ = base(other);
+      return *this;
+    }
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr AssignableFromIter& operator++() {++it_; return *this;}
+    constexpr AssignableFromIter operator++(int)
+        {AssignableFromIter tmp(*this); ++(*this); return tmp;}
+};
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  int operator*() { return *ptr; }
+  void operator++(int) { ++ptr; }
+  InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert( std::is_assignable_v<std::counted_iterator<forward_iterator<int*>>,
+                                        std::counted_iterator<forward_iterator<int*>>>);
+    static_assert(!std::is_assignable_v<std::counted_iterator<forward_iterator<int*>>,
+                                        std::counted_iterator<random_access_iterator<int*>>>);
+  }
+
+  {
+    std::counted_iterator iter1(AssignableFromIter{buffer}, 8);
+    std::counted_iterator iter2(forward_iterator<int*>{buffer + 2}, 6);
+    assert(base(iter1.base()) == buffer);
+    assert(iter1.count() == 8);
+    std::counted_iterator<AssignableFromIter>& result = (iter1 = iter2);
+    assert(&result == &iter1);
+    assert(base(iter1.base()) == buffer + 2);
+    assert(iter1.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 = iter2), std::counted_iterator<AssignableFromIter>&);
+  }
+  {
+    std::counted_iterator iter1(AssignableFromIter{buffer}, 8);
+    const std::counted_iterator iter2(forward_iterator<int*>{buffer + 2}, 6);
+    assert(base(iter1.base()) == buffer);
+    assert(iter1.count() == 8);
+    std::counted_iterator<AssignableFromIter>& result = (iter1 = iter2);
+    assert(&result == &iter1);
+    assert(base(iter1.base()) == buffer + 2);
+    assert(iter1.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 = iter2), std::counted_iterator<AssignableFromIter>&);
+  }
+
+  {
+    std::counted_iterator iter1(InputOrOutputArchetype{buffer}, 8);
+    std::counted_iterator iter2(InputOrOutputArchetype{buffer + 2}, 6);
+    assert(iter1.base().ptr == buffer);
+    assert(iter1.count() == 8);
+    std::counted_iterator<InputOrOutputArchetype>& result = (iter1 = iter2);
+    assert(&result == &iter1);
+    assert(iter1.base().ptr == buffer + 2);
+    assert(iter1.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 = iter2), std::counted_iterator<InputOrOutputArchetype>&);
+  }
+  {
+    std::counted_iterator iter1(InputOrOutputArchetype{buffer}, 8);
+    const std::counted_iterator iter2(InputOrOutputArchetype{buffer + 2}, 6);
+    assert(iter1.base().ptr == buffer);
+    assert(iter1.count() == 8);
+    std::counted_iterator<InputOrOutputArchetype>& result = (iter1 = iter2);
+    assert(&result == &iter1);
+    assert(iter1.base().ptr == buffer + 2);
+    assert(iter1.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 = iter2), std::counted_iterator<InputOrOutputArchetype>&);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/base.pass.cpp
new file mode 100644
index 0000000..8d3e9f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/base.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr const I& base() const &;
+// constexpr I base() &&;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  int operator*() { return *ptr; }
+  void operator++(int) { ++ptr; }
+  InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(base(iter.base()) == buffer);
+    assert(base(std::move(iter).base()) == buffer);
+
+    ASSERT_NOEXCEPT(iter.base());
+    ASSERT_SAME_TYPE(decltype(iter.base()), const cpp20_input_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), cpp20_input_iterator<int*>);
+  }
+
+  {
+    std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+    assert(base(iter.base()) == buffer);
+    assert(base(std::move(iter).base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const forward_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), forward_iterator<int*>);
+  }
+
+  {
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    assert(base(iter.base()) == buffer);
+    assert(base(std::move(iter).base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const contiguous_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), contiguous_iterator<int*>);
+  }
+
+  {
+    std::counted_iterator iter(InputOrOutputArchetype{buffer}, 6);
+    assert(iter.base().ptr == buffer);
+    assert(std::move(iter).base().ptr == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const InputOrOutputArchetype&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), InputOrOutputArchetype);
+  }
+
+  {
+    const std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(base(iter.base()) == buffer);
+    assert(base(std::move(iter).base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const cpp20_input_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const cpp20_input_iterator<int*>&);
+  }
+
+  {
+    const std::counted_iterator iter(forward_iterator<int*>{buffer}, 7);
+    assert(base(iter.base()) == buffer);
+    assert(base(std::move(iter).base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const forward_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const forward_iterator<int*>&);
+  }
+
+  {
+    const std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 6);
+    assert(base(iter.base()) == buffer);
+    assert(base(std::move(iter).base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const contiguous_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const contiguous_iterator<int*>&);
+  }
+
+  {
+    const std::counted_iterator iter(InputOrOutputArchetype{buffer}, 6);
+    assert(iter.base().ptr == buffer);
+    assert(std::move(iter).base().ptr == buffer);
+
+    ASSERT_SAME_TYPE(decltype(iter.base()), const InputOrOutputArchetype&);
+    ASSERT_SAME_TYPE(decltype(std::move(iter).base()), const InputOrOutputArchetype&);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/compare.pass.cpp
new file mode 100644
index 0000000..eb0c5d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/compare.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<common_with<I> I2>
+//   friend constexpr bool operator==(
+//     const counted_iterator& x, const counted_iterator<I2>& y);
+// friend constexpr bool operator==(
+//   const counted_iterator& x, default_sentinel_t);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// This iterator is common_with forward_iterator but NOT comparable with it.
+template <class It>
+class CommonWithForwardIter
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    constexpr It base() const {return it_;}
+
+    CommonWithForwardIter() = default;
+    explicit constexpr CommonWithForwardIter(It it) : it_(it) {}
+    constexpr CommonWithForwardIter(const forward_iterator<It>& it) : it_(it.base()) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr CommonWithForwardIter& operator++() {++it_; return *this;}
+    constexpr CommonWithForwardIter operator++(int)
+        {CommonWithForwardIter tmp(*this); ++(*this); return tmp;}
+};
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  constexpr int operator*() { return *ptr; }
+  constexpr void operator++(int) { ++ptr; }
+  constexpr InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    {
+      std::counted_iterator iter1(forward_iterator<int*>(buffer), 8);
+      std::counted_iterator iter2(CommonWithForwardIter<int*>(buffer), 8);
+
+      assert(iter1 == iter2);
+      assert(iter2 == iter1);
+      ++iter1;
+      assert(iter1 != iter2);
+      assert(iter2 != iter1);
+    }
+  }
+
+  {
+    {
+      std::counted_iterator iter(cpp20_input_iterator<int*>(buffer), 8);
+
+      assert(iter != std::default_sentinel);
+      assert(std::default_sentinel == std::ranges::next(std::move(iter), 8));
+    }
+    {
+      std::counted_iterator iter(forward_iterator<int*>(buffer), 8);
+
+      assert(iter != std::default_sentinel);
+      assert(std::default_sentinel == std::ranges::next(iter, 8));
+    }
+    {
+      std::counted_iterator iter(random_access_iterator<int*>(buffer), 8);
+
+      assert(iter != std::default_sentinel);
+      assert(std::default_sentinel == std::ranges::next(iter, 8));
+    }
+    {
+      std::counted_iterator iter(InputOrOutputArchetype{buffer}, 8);
+
+      assert(iter != std::default_sentinel);
+      assert(std::default_sentinel == std::ranges::next(iter, 8));
+    }
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/count.pass.cpp
new file mode 100644
index 0000000..6e161fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/count.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iter_difference_t<I> count() const noexcept;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  constexpr int operator*() { return *ptr; }
+  constexpr void operator++(int) { ++ptr; }
+  constexpr InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    for (int i = 8; i != 0; --i, ++iter)
+      assert(iter.count() == i);
+
+    static_assert(noexcept(iter.count()));
+  }
+  {
+    std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+    for (int i = 8; i != 0; --i, ++iter)
+      assert(iter.count() == i);
+
+    static_assert(noexcept(iter.count()));
+  }
+  {
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    for (int i = 8; i != 0; --i, ++iter)
+      assert(iter.count() == i);
+  }
+  {
+    std::counted_iterator iter(InputOrOutputArchetype{buffer + 2}, 6);
+    assert(iter.count() == 6);
+  }
+
+  // Const tests.
+  {
+    const std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(iter.count() == 8);
+  }
+  {
+    const std::counted_iterator iter(forward_iterator<int*>{buffer + 1}, 7);
+    assert(iter.count() == 7);
+  }
+  {
+    const std::counted_iterator iter(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(iter.count() == 6);
+  }
+  {
+    const std::counted_iterator iter(InputOrOutputArchetype{buffer + 2}, 6);
+    assert(iter.count() == 6);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.conv.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.conv.pass.cpp
new file mode 100644
index 0000000..8e1a3f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.conv.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I2>
+//   requires convertible_to<const I2&, I>
+//     constexpr counted_iterator(const counted_iterator<I2>& x);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class T>
+class ConvertibleTo
+{
+    int *it_;
+
+public:
+    typedef          std::input_iterator_tag                      iterator_category;
+    typedef int                                                   value_type;
+    typedef typename std::iterator_traits<int *>::difference_type difference_type;
+    typedef int *                                                 pointer;
+    typedef int &                                                 reference;
+
+    constexpr int *base() const {return it_;}
+
+    ConvertibleTo() = default;
+    explicit constexpr ConvertibleTo(int *it) : it_(it) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr ConvertibleTo& operator++() {++it_; return *this;}
+    constexpr ConvertibleTo operator++(int)
+        {ConvertibleTo tmp(*this); ++(*this); return tmp;}
+
+    constexpr operator T() const { return T(it_); }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert( std::is_constructible_v<std::counted_iterator<forward_iterator<int*>>,
+                                           std::counted_iterator<forward_iterator<int*>>>);
+    static_assert(!std::is_constructible_v<std::counted_iterator<forward_iterator<int*>>,
+                                           std::counted_iterator<random_access_iterator<int*>>>);
+  }
+  {
+    std::counted_iterator iter1(ConvertibleTo<forward_iterator<int*>>{buffer}, 8);
+    std::counted_iterator<forward_iterator<int*>> iter2(iter1);
+    assert(iter2.base() == forward_iterator<int*>{buffer});
+    assert(iter2.count() == 8);
+  }
+  {
+    const std::counted_iterator iter1(ConvertibleTo<forward_iterator<int*>>{buffer}, 8);
+    const std::counted_iterator<forward_iterator<int*>> iter2(iter1);
+    assert(iter2.base() == forward_iterator<int*>{buffer});
+    assert(iter2.count() == 8);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.default.pass.cpp
new file mode 100644
index 0000000..60596ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.default.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator() requires default_initializable<I> = default;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+constexpr bool test() {
+  static_assert(!std::default_initializable<std::counted_iterator<cpp17_input_iterator<int*>>>);
+  static_assert( std::default_initializable<std::counted_iterator<forward_iterator<int*>>>);
+
+  std::counted_iterator<forward_iterator<int*>> iter;
+  assert(iter.base() == forward_iterator<int*>());
+  assert(iter.count() == 0);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.iter.pass.cpp
new file mode 100644
index 0000000..00b6fb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/ctor.iter.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator() requires default_initializable<I> = default;
+// constexpr counted_iterator(I x, iter_difference_t<I> n);
+// template<class I2>
+//   requires convertible_to<const I2&, I>
+//     constexpr counted_iterator(const counted_iterator<I2>& x);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  constexpr int operator*() { return *ptr; }
+  constexpr void operator++(int) { ++ptr; }
+  constexpr InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(base(iter.base()) == buffer);
+    assert(iter.count() == 8);
+  }
+
+  {
+    std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+    assert(iter.base() == forward_iterator<int*>{buffer});
+    assert(iter.count() == 8);
+  }
+
+  {
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    assert(iter.base() == contiguous_iterator<int*>{buffer});
+    assert(iter.count() == 8);
+  }
+
+  {
+    std::counted_iterator iter(InputOrOutputArchetype{buffer}, 8);
+    assert(iter.base().ptr == buffer);
+    assert(iter.count() == 8);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/decrement.pass.cpp
new file mode 100644
index 0000000..7b3c526
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/decrement.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator& operator--()
+//  requires bidirectional_iterator<I>;
+// constexpr counted_iterator operator--(int)
+//  requires bidirectional_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter>
+concept MinusEnabled = requires(Iter& iter) {
+  iter--;
+  --iter;
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    using Counted = std::counted_iterator<bidirectional_iterator<int*>>;
+    std::counted_iterator iter(bidirectional_iterator<int*>{buffer + 2}, 6);
+    assert(iter-- == Counted(bidirectional_iterator<int*>{buffer + 2}, 6));
+    assert(--iter == Counted(bidirectional_iterator<int*>{buffer}, 8));
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter--), Counted);
+    ASSERT_SAME_TYPE(decltype(--iter), Counted&);
+  }
+  {
+    using Counted = std::counted_iterator<random_access_iterator<int*>>;
+    Counted iter(random_access_iterator<int*>{buffer + 2}, 6);
+    assert(iter-- == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+    assert(--iter == Counted(random_access_iterator<int*>{buffer}, 8));
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter--), Counted);
+    ASSERT_SAME_TYPE(decltype(--iter), Counted&);
+  }
+  {
+    using Counted = std::counted_iterator<contiguous_iterator<int*>>;
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(iter-- == Counted(contiguous_iterator<int*>{buffer + 2}, 6));
+    assert(--iter == Counted(contiguous_iterator<int*>{buffer}, 8));
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter--), Counted);
+    ASSERT_SAME_TYPE(decltype(--iter), Counted&);
+  }
+
+  {
+    static_assert( MinusEnabled<std::counted_iterator<contiguous_iterator<int*>>>);
+    static_assert(!MinusEnabled<const std::counted_iterator<contiguous_iterator<int*>>>);
+    static_assert(!MinusEnabled<std::counted_iterator<forward_iterator<int*>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/deref.pass.cpp
new file mode 100644
index 0000000..ea7083f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/deref.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr decltype(auto) operator*();
+// constexpr decltype(auto) operator*() const
+//   requires dereferenceable<const I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  constexpr int operator*() const { return *ptr; }
+  constexpr void operator++(int) { ++ptr; }
+  constexpr InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+struct NonConstDeref {
+  using difference_type = int;
+
+  int *ptr;
+
+  constexpr int operator*() { return *ptr; }
+  constexpr void operator++(int) { ++ptr; }
+  constexpr NonConstDeref& operator++() { ++ptr; return *this; }
+};
+
+template<class T>
+concept IsDereferenceable = requires(T& i) {
+  *i;
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert( IsDereferenceable<std::counted_iterator<InputOrOutputArchetype>>);
+    static_assert( IsDereferenceable<const std::counted_iterator<InputOrOutputArchetype>>);
+    static_assert( IsDereferenceable<std::counted_iterator<NonConstDeref>>);
+    static_assert(!IsDereferenceable<const std::counted_iterator<NonConstDeref>>);
+  }
+
+  {
+    std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    for (int i = 1; i < 9; ++i, ++iter)
+      assert(*iter == i);
+  }
+
+  {
+    std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+    for (int i = 1; i < 9; ++i, ++iter)
+      assert(*iter == i);
+  }
+
+  {
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    for (int i = 1; i < 9; ++i, ++iter)
+      assert(*iter == i);
+  }
+
+  {
+    std::counted_iterator iter(InputOrOutputArchetype{buffer}, 8);
+    for (int i = 1; i < 9; ++i, ++iter)
+      assert(*iter == i);
+  }
+
+  {
+    const std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(*iter == 1);
+  }
+
+  {
+    const std::counted_iterator iter(forward_iterator<int*>{buffer + 1}, 7);
+    assert(*iter == 2);
+  }
+
+  {
+    const std::counted_iterator iter(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(*iter == 3);
+  }
+
+  {
+    const std::counted_iterator iter(InputOrOutputArchetype{buffer + 2}, 6);
+    assert(*iter == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..2786dfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/implicit_ctad.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
+
+// counted_iterator
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  int array[] = {1, 2, 3};
+  int* p = array;
+  std::counted_iterator iter(p, 3);
+  ASSERT_SAME_TYPE(decltype(iter), std::counted_iterator<int*>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/increment.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/increment.cpp
new file mode 100644
index 0000000..66d90a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/increment.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator& operator++();
+// decltype(auto) operator++(int);
+// constexpr counted_iterator operator++(int)
+//   requires forward_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <class It>
+class ThrowsOnInc
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    constexpr It base() const {return it_;}
+
+    ThrowsOnInc() = default;
+    explicit constexpr ThrowsOnInc(It it) : it_(it) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr ThrowsOnInc& operator++() {throw 42;}
+    constexpr ThrowsOnInc operator++(int) {throw 42;}
+};
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int *ptr;
+
+  constexpr int operator*() const { return *ptr; }
+  constexpr void operator++(int) { ++ptr; }
+  constexpr InputOrOutputArchetype& operator++() { ++ptr; return *this; }
+};
+
+template<class Iter>
+concept PlusEnabled = requires(Iter& iter) {
+  iter++;
+  ++iter;
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    using Counted = std::counted_iterator<forward_iterator<int*>>;
+    std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+
+    assert(iter++ == Counted(forward_iterator<int*>{buffer}, 8));
+    assert(++iter == Counted(forward_iterator<int*>{buffer + 2}, 6));
+
+    ASSERT_SAME_TYPE(decltype(iter++), Counted);
+    ASSERT_SAME_TYPE(decltype(++iter), Counted&);
+  }
+  {
+    using Counted = std::counted_iterator<random_access_iterator<int*>>;
+    std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+
+    assert(iter++ == Counted(random_access_iterator<int*>{buffer}, 8));
+    assert(++iter == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+
+    ASSERT_SAME_TYPE(decltype(iter++), Counted);
+    ASSERT_SAME_TYPE(decltype(++iter), Counted&);
+  }
+
+  {
+    static_assert( PlusEnabled<      std::counted_iterator<random_access_iterator<int*>>>);
+    static_assert(!PlusEnabled<const std::counted_iterator<random_access_iterator<int*>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    using Counted = std::counted_iterator<InputOrOutputArchetype>;
+    std::counted_iterator iter(InputOrOutputArchetype{buffer}, 8);
+
+    iter++;
+    assert((++iter).base().ptr == buffer + 2);
+
+    ASSERT_SAME_TYPE(decltype(iter++), void);
+    ASSERT_SAME_TYPE(decltype(++iter), Counted&);
+  }
+  {
+    using Counted = std::counted_iterator<cpp20_input_iterator<int*>>;
+    std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+
+    iter++;
+    assert(++iter == Counted(cpp20_input_iterator<int*>{buffer + 2}, 6));
+
+    ASSERT_SAME_TYPE(decltype(iter++), void);
+    ASSERT_SAME_TYPE(decltype(++iter), Counted&);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using Counted = std::counted_iterator<ThrowsOnInc<int*>>;
+    std::counted_iterator iter(ThrowsOnInc<int*>{buffer}, 8);
+    try {
+      (void)iter++;
+      assert(false);
+    } catch (int x) {
+      assert(x == 42);
+      assert(iter.count() == 8);
+    }
+
+    ASSERT_SAME_TYPE(decltype(iter++), ThrowsOnInc<int*>);
+    ASSERT_SAME_TYPE(decltype(++iter), Counted&);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iter_move.pass.cpp
new file mode 100644
index 0000000..1494a9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iter_move.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr iter_rvalue_reference_t<I>
+//   iter_move(const counted_iterator& i)
+//     noexcept(noexcept(ranges::iter_move(i.current)))
+//     requires input_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<bool IsNoexcept>
+class HasNoexceptIterMove
+{
+  int *it_;
+
+public:
+  typedef          std::input_iterator_tag                      iterator_category;
+  typedef int                                                   value_type;
+  typedef typename std::iterator_traits<int *>::difference_type difference_type;
+  typedef int *                                                 pointer;
+  typedef int &                                                 reference;
+
+  constexpr int *base() const {return it_;}
+
+  HasNoexceptIterMove() = default;
+  explicit constexpr HasNoexceptIterMove(int *it) : it_(it) {}
+
+  constexpr reference operator*() const noexcept(IsNoexcept) { return *it_; }
+
+  constexpr HasNoexceptIterMove& operator++() {++it_; return *this;}
+  constexpr HasNoexceptIterMove operator++(int)
+      {HasNoexceptIterMove tmp(*this); ++(*this); return tmp;}
+};
+
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto iter1 = cpp17_input_iterator<int*>(buffer);
+    auto commonIter1 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    assert(std::ranges::iter_move(commonIter1) == 1);
+    ASSERT_SAME_TYPE(decltype(std::ranges::iter_move(commonIter1)), int&&);
+  }
+  {
+    auto iter1 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    assert(std::ranges::iter_move(commonIter1) == 1);
+    ASSERT_SAME_TYPE(decltype(std::ranges::iter_move(commonIter1)), int&&);
+  }
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    assert(std::ranges::iter_move(commonIter1) == 1);
+    ASSERT_SAME_TYPE(decltype(std::ranges::iter_move(commonIter1)), int&&);
+  }
+
+  // Test noexceptness.
+  {
+    static_assert( noexcept(std::ranges::iter_move(std::declval<std::counted_iterator<HasNoexceptIterMove<true>>>())));
+    static_assert(!noexcept(std::ranges::iter_move(std::declval<std::counted_iterator<HasNoexceptIterMove<false>>>())));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iter_swap.pass.cpp
new file mode 100644
index 0000000..d3057e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iter_swap.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<indirectly_swappable<I> I2>
+//   friend constexpr void
+//     iter_swap(const counted_iterator& x, const counted_iterator<I2>& y)
+//       noexcept(noexcept(ranges::iter_swap(x.current, y.current)));
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<bool IsNoexcept>
+class HasNoexceptIterSwap
+{
+  int *it_;
+
+public:
+  typedef          std::input_iterator_tag                      iterator_category;
+  typedef int                                                   value_type;
+  typedef typename std::iterator_traits<int *>::difference_type difference_type;
+  typedef int *                                                 pointer;
+  typedef int &                                                 reference;
+
+  constexpr int *base() const {return it_;}
+
+  HasNoexceptIterSwap() = default;
+  explicit constexpr HasNoexceptIterSwap(int *it) : it_(it) {}
+
+  constexpr reference operator*() const {return *it_;}
+
+  constexpr HasNoexceptIterSwap& operator++() {++it_; return *this;}
+  constexpr HasNoexceptIterSwap operator++(int)
+      {HasNoexceptIterSwap tmp(*this); ++(*this); return tmp;}
+
+  friend void iter_swap(
+    const HasNoexceptIterSwap&, const HasNoexceptIterSwap&) noexcept(IsNoexcept) {}
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto iter1 = cpp17_input_iterator<int*>(buffer);
+    auto commonIter1 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    auto commonIter2 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    for (auto i = 0; i < 4; ++i) ++commonIter2;
+    assert(*commonIter2 == 5);
+    std::ranges::iter_swap(commonIter1, commonIter2);
+    assert(*commonIter1 == 5);
+    assert(*commonIter2 == 1);
+    std::ranges::iter_swap(commonIter2, commonIter1);
+  }
+  {
+    auto iter1 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    auto commonIter2 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    for (auto i = 0; i < 4; ++i) ++commonIter2;
+    assert(*commonIter2 == 5);
+    std::ranges::iter_swap(commonIter1, commonIter2);
+    assert(*commonIter1 == 5);
+    assert(*commonIter2 == 1);
+    std::ranges::iter_swap(commonIter2, commonIter1);
+  }
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    auto commonIter2 = std::counted_iterator<decltype(iter1)>(iter1, 8);
+    for (auto i = 0; i < 4; ++i) ++commonIter2;
+    assert(*commonIter2 == 5);
+    std::ranges::iter_swap(commonIter1, commonIter2);
+    assert(*commonIter1 == 5);
+    assert(*commonIter2 == 1);
+    std::ranges::iter_swap(commonIter2, commonIter1);
+  }
+
+  // Test noexceptness.
+  {
+    static_assert( noexcept(std::ranges::iter_swap(
+      std::declval<std::counted_iterator<HasNoexceptIterSwap<true>>&>(),
+      std::declval<std::counted_iterator<HasNoexceptIterSwap<true>>&>()
+    )));
+    static_assert(!noexcept(std::ranges::iter_swap(
+      std::declval<std::counted_iterator<HasNoexceptIterSwap<false>>&>(),
+      std::declval<std::counted_iterator<HasNoexceptIterSwap<false>>&>()
+    )));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..d5fa2ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Iterator conformance tests for counted_iterator.
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+void test() {
+  static_assert(std::input_iterator<std::counted_iterator<cpp17_input_iterator<int*>>>);
+  static_assert(std::forward_iterator<std::counted_iterator<forward_iterator<int*>>>);
+  static_assert(std::bidirectional_iterator<std::counted_iterator<random_access_iterator<int*>>>);
+  static_assert(std::bidirectional_iterator<std::counted_iterator<contiguous_iterator<int*>>>);
+  static_assert(std::random_access_iterator<std::counted_iterator<random_access_iterator<int*>>>);
+  static_assert(std::contiguous_iterator<std::counted_iterator<contiguous_iterator<int*>>>);
+
+  using Iter = std::counted_iterator<forward_iterator<int*>>;
+  static_assert(std::indirectly_writable<Iter, int>);
+  static_assert(std::indirectly_swappable<Iter, Iter>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iterator_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iterator_traits.compile.pass.cpp
new file mode 100644
index 0000000..8675c53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/iterator_traits.compile.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I>
+//   requires same_as<ITER_TRAITS(I), iterator_traits<I>>   // see [iterator.concepts.general]
+// struct iterator_traits<counted_iterator<I>> : iterator_traits<I> {
+//   using pointer = conditional_t<contiguous_iterator<I>,
+//                                 add_pointer_t<iter_reference_t<I>>, void>;
+// };
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+void test() {
+  {
+    using Iter = cpp17_input_iterator<int*>;
+    using CommonIter = std::counted_iterator<Iter>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, void>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+  {
+    using Iter = forward_iterator<int*>;
+    using CommonIter = std::counted_iterator<Iter>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_category, std::forward_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, void>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+  {
+    using Iter = random_access_iterator<int*>;
+    using CommonIter = std::counted_iterator<Iter>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_category, std::random_access_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, void>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+  {
+    using Iter = contiguous_iterator<int*>;
+    using CommonIter = std::counted_iterator<Iter>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_category, std::contiguous_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, int*>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/member_types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/member_types.compile.pass.cpp
new file mode 100644
index 0000000..569b57c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/member_types.compile.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator_type, value_type, difference_type, iterator_concept, iterator_category
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// No value_type.
+struct InputOrOutputArchetype {
+  using difference_type = int;
+
+  int operator*();
+  void operator++(int);
+  InputOrOutputArchetype& operator++();
+};
+
+template<class T>
+concept HasValueType = requires { typename T::value_type; };
+
+template<class T>
+concept HasIteratorConcept = requires { typename T::iterator_concept; };
+
+template<class T>
+concept HasIteratorCategory = requires { typename T::iterator_category; };
+
+void test() {
+  {
+    using Iter = std::counted_iterator<InputOrOutputArchetype>;
+    static_assert(std::same_as<Iter::iterator_type, InputOrOutputArchetype>);
+    static_assert(!HasValueType<Iter>);
+    static_assert(std::same_as<Iter::difference_type, int>);
+    static_assert(!HasIteratorConcept<Iter>);
+    static_assert(!HasIteratorCategory<Iter>);
+  }
+  {
+    using Iter = std::counted_iterator<cpp20_input_iterator<int*>>;
+    static_assert(std::same_as<Iter::iterator_type, cpp20_input_iterator<int*>>);
+    static_assert(std::same_as<Iter::value_type, int>);
+    static_assert(std::same_as<Iter::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<Iter::iterator_concept, std::input_iterator_tag>);
+    static_assert(!HasIteratorCategory<Iter>);
+  }
+  {
+    using Iter = std::counted_iterator<random_access_iterator<int*>>;
+    static_assert(std::same_as<Iter::iterator_type, random_access_iterator<int*>>);
+    static_assert(std::same_as<Iter::value_type, int>);
+    static_assert(std::same_as<Iter::difference_type, std::ptrdiff_t>);
+    static_assert(!HasIteratorConcept<Iter>);
+    static_assert(std::same_as<Iter::iterator_category, std::random_access_iterator_tag>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.default_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.default_sentinel.pass.cpp
new file mode 100644
index 0000000..7eb4ff4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.default_sentinel.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr iter_difference_t<I> operator-(
+//   const counted_iterator& x, default_sentinel_t);
+// friend constexpr iter_difference_t<I> operator-(
+//   default_sentinel_t, const counted_iterator& y);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+    assert(iter - std::default_sentinel == -8);
+    assert(std::default_sentinel - iter == 8);
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter - std::default_sentinel), std::iter_difference_t<int*>);
+    ASSERT_SAME_TYPE(decltype(std::default_sentinel - iter), std::iter_difference_t<int*>);
+  }
+  {
+    const std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+    assert(iter - std::default_sentinel == -8);
+    assert(std::default_sentinel - iter == 8);
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter - std::default_sentinel), std::iter_difference_t<int*>);
+    ASSERT_SAME_TYPE(decltype(std::default_sentinel - iter), std::iter_difference_t<int*>);
+  }
+  {
+    std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+    assert(iter - std::default_sentinel == -8);
+    assert(std::default_sentinel - iter == 8);
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter - std::default_sentinel), std::iter_difference_t<int*>);
+    ASSERT_SAME_TYPE(decltype(std::default_sentinel - iter), std::iter_difference_t<int*>);
+  }
+  {
+    const std::counted_iterator iter(forward_iterator<int*>{buffer}, 8);
+    assert(iter - std::default_sentinel == -8);
+    assert(std::default_sentinel - iter == 8);
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter - std::default_sentinel), std::iter_difference_t<int*>);
+    ASSERT_SAME_TYPE(decltype(std::default_sentinel - iter), std::iter_difference_t<int*>);
+  }
+  {
+    std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(iter - std::default_sentinel == -8);
+    assert(std::default_sentinel - iter == 8);
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter - std::default_sentinel), std::iter_difference_t<int*>);
+    ASSERT_SAME_TYPE(decltype(std::default_sentinel - iter), std::iter_difference_t<int*>);
+  }
+  {
+    const std::counted_iterator iter(cpp20_input_iterator<int*>{buffer}, 8);
+    assert(iter - std::default_sentinel == -8);
+    assert(std::default_sentinel - iter == 8);
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter - std::default_sentinel), std::iter_difference_t<int*>);
+    ASSERT_SAME_TYPE(decltype(std::default_sentinel - iter), std::iter_difference_t<int*>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.eq.pass.cpp
new file mode 100644
index 0000000..854c36a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.eq.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator& operator-=(iter_difference_t<I> n)
+//   requires random_access_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter>
+concept MinusEqEnabled = requires(Iter& iter) {
+  iter -= 1;
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    using Counted = std::counted_iterator<random_access_iterator<int*>>;
+    Counted iter(random_access_iterator<int*>{buffer + 2}, 6);
+    assert((iter -= 2) == Counted(random_access_iterator<int*>{buffer}, 8));
+    assert((iter -= 0) == Counted(random_access_iterator<int*>{buffer}, 8));
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter -= 2), Counted&);
+  }
+  {
+    using Counted = std::counted_iterator<contiguous_iterator<int*>>;
+    Counted iter(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert((iter -= 2) == Counted(contiguous_iterator<int*>{buffer}, 8));
+    assert((iter -= 0) == Counted(contiguous_iterator<int*>{buffer}, 8));
+    assert(iter.count() == 8);
+
+    ASSERT_SAME_TYPE(decltype(iter -= 2), Counted&);
+  }
+  {
+    static_assert( MinusEqEnabled<      std::counted_iterator<random_access_iterator<int*>>>);
+    static_assert(!MinusEqEnabled<const std::counted_iterator<random_access_iterator<int*>>>);
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.iter.pass.cpp
new file mode 100644
index 0000000..f2767a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.iter.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<common_with<I> I2>
+//   friend constexpr iter_difference_t<I2> operator-(
+//     const counted_iterator& x, const counted_iterator<I2>& y);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// This iterator is common_with forward_iterator but NOT comparable with it.
+template <class It>
+class CommonWithForwardIter
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    constexpr It base() const {return it_;}
+
+    CommonWithForwardIter() = default;
+    explicit constexpr CommonWithForwardIter(It it) : it_(it) {}
+    constexpr CommonWithForwardIter(const forward_iterator<It>& it) : it_(it.base()) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr CommonWithForwardIter& operator++() {++it_; return *this;}
+    constexpr CommonWithForwardIter operator++(int)
+        {CommonWithForwardIter tmp(*this); ++(*this); return tmp;}
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter1(random_access_iterator<int*>{buffer}, 8);
+    std::counted_iterator iter2(random_access_iterator<int*>{buffer + 4}, 4);
+    assert(iter1 - iter2 == -4);
+    assert(iter2 - iter1 == 4);
+    assert(iter1.count() == 8);
+    assert(iter2.count() == 4);
+
+    ASSERT_SAME_TYPE(decltype(iter1 - iter2), std::iter_difference_t<int*>);
+  }
+  {
+    const std::counted_iterator iter1(random_access_iterator<int*>{buffer}, 8);
+    const std::counted_iterator iter2(random_access_iterator<int*>{buffer + 4}, 4);
+    assert(iter1 - iter2 == -4);
+    assert(iter2 - iter1 == 4);
+    assert(iter1.count() == 8);
+    assert(iter2.count() == 4);
+
+    ASSERT_SAME_TYPE(decltype(iter1 - iter2), std::iter_difference_t<int*>);
+  }
+  {
+    std::counted_iterator iter1(contiguous_iterator<int*>{buffer}, 8);
+    std::counted_iterator iter2(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(iter1 - iter2 == -2);
+    assert(iter2 - iter1 == 2);
+    assert(iter1.count() == 8);
+    assert(iter2.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 - iter2), std::iter_difference_t<int*>);
+  }
+  {
+    const std::counted_iterator iter1(contiguous_iterator<int*>{buffer}, 8);
+    const std::counted_iterator iter2(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(iter1 - iter2 == -2);
+    assert(iter2 - iter1 == 2);
+    assert(iter1.count() == 8);
+    assert(iter2.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 - iter2), std::iter_difference_t<int*>);
+  }
+  // The minus operator works even if Iter is not a random_access_iterator because
+  // counted_iterator is able to implement it by subtracting the counts rather than
+  // the underlying iterators.
+  {
+    std::counted_iterator iter1(CommonWithForwardIter<int*>{buffer}, 8);
+    std::counted_iterator iter2(forward_iterator<int*>{buffer + 2}, 6);
+    assert(iter1 - iter2 == -2);
+    assert(iter2 - iter1 == 2);
+    assert(iter1.count() == 8);
+    assert(iter2.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 - iter2), std::iter_difference_t<int*>);
+  }
+  {
+    const std::counted_iterator iter1(CommonWithForwardIter<int*>{buffer}, 8);
+    const std::counted_iterator iter2(forward_iterator<int*>{buffer + 2}, 6);
+    assert(iter1 - iter2 == -2);
+    assert(iter2 - iter1 == 2);
+    assert(iter1.count() == 8);
+    assert(iter2.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter1 - iter2), std::iter_difference_t<int*>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.size.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.size.pass.cpp
new file mode 100644
index 0000000..e6fa733
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/minus.size.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator operator-(iter_difference_t<I> n) const
+//   requires random_access_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter>
+concept MinusEnabled = requires(Iter& iter) {
+  iter - 1;
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    using Counted = std::counted_iterator<random_access_iterator<int*>>;
+    Counted iter(random_access_iterator<int*>{buffer + 2}, 6);
+    assert(iter - 2 == Counted(random_access_iterator<int*>{buffer}, 8));
+    assert(iter - 0 == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+    assert(iter.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter - 2), Counted);
+  }
+  {
+    using Counted = std::counted_iterator<random_access_iterator<int*>>;
+    const Counted iter(random_access_iterator<int*>{buffer + 2}, 6);
+    assert(iter - 2 == Counted(random_access_iterator<int*>{buffer}, 8));
+    assert(iter - 0 == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+    assert(iter.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter - 2), Counted);
+  }
+  {
+    using Counted = std::counted_iterator<contiguous_iterator<int*>>;
+    Counted iter(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(iter - 2 == Counted(contiguous_iterator<int*>{buffer}, 8));
+    assert(iter - 0 == Counted(contiguous_iterator<int*>{buffer + 2}, 6));
+    assert(iter.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter - 2), Counted);
+  }
+  {
+    using Counted = std::counted_iterator<contiguous_iterator<int*>>;
+    const Counted iter(contiguous_iterator<int*>{buffer + 2}, 6);
+    assert(iter - 2 == Counted(contiguous_iterator<int*>{buffer}, 8));
+    assert(iter - 0 == Counted(contiguous_iterator<int*>{buffer + 2}, 6));
+    assert(iter.count() == 6);
+
+    ASSERT_SAME_TYPE(decltype(iter - 2), Counted);
+  }
+
+  {
+    static_assert( MinusEnabled<std::counted_iterator<random_access_iterator<int*>>>);
+    static_assert(!MinusEnabled<std::counted_iterator<bidirectional_iterator<int*>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/plus.pass.cpp
new file mode 100644
index 0000000..a397a87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/plus.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr counted_iterator operator+(iter_difference_t<I> n) const
+//     requires random_access_iterator<I>;
+// friend constexpr counted_iterator operator+(
+//   iter_difference_t<I> n, const counted_iterator& x)
+//     requires random_access_iterator<I>;
+// constexpr counted_iterator& operator+=(iter_difference_t<I> n)
+//     requires random_access_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter>
+concept PlusEnabled = requires(Iter& iter) {
+  iter + 1;
+};
+
+template<class Iter>
+concept PlusEqEnabled = requires(Iter& iter) {
+  iter += 1;
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    {
+      using Counted = std::counted_iterator<random_access_iterator<int*>>;
+      std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+      assert(iter + 2 == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+      assert(iter + 0 == Counted(random_access_iterator<int*>{buffer}, 8));
+
+      ASSERT_SAME_TYPE(decltype(iter + 2), Counted);
+    }
+    {
+      using Counted = const std::counted_iterator<random_access_iterator<int*>>;
+      const std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+      assert(iter + 8 == Counted(random_access_iterator<int*>{buffer + 8}, 0));
+      assert(iter + 0 == Counted(random_access_iterator<int*>{buffer}, 8));
+
+      ASSERT_SAME_TYPE(decltype(iter + 2), std::remove_const_t<Counted>);
+    }
+  }
+
+  {
+    {
+      using Counted = std::counted_iterator<random_access_iterator<int*>>;
+      std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+      assert(2 + iter == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+      assert(0 + iter == Counted(random_access_iterator<int*>{buffer}, 8));
+
+      ASSERT_SAME_TYPE(decltype(iter + 2), Counted);
+    }
+    {
+      using Counted = const std::counted_iterator<random_access_iterator<int*>>;
+      const std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+      assert(8 + iter == Counted(random_access_iterator<int*>{buffer + 8}, 0));
+      assert(0 + iter == Counted(random_access_iterator<int*>{buffer}, 8));
+
+      ASSERT_SAME_TYPE(decltype(iter + 2), std::remove_const_t<Counted>);
+    }
+  }
+
+  {
+    {
+      using Counted = std::counted_iterator<random_access_iterator<int*>>;
+      std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+      assert((iter += 2) == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+      assert((iter += 0) == Counted(random_access_iterator<int*>{buffer + 2}, 6));
+
+      ASSERT_SAME_TYPE(decltype(iter += 2), Counted&);
+    }
+    {
+      using Counted = std::counted_iterator<contiguous_iterator<int*>>;
+      std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+      assert((iter += 8) == Counted(contiguous_iterator<int*>{buffer + 8}, 0));
+      assert((iter += 0) == Counted(contiguous_iterator<int*>{buffer + 8}, 0));
+
+      ASSERT_SAME_TYPE(decltype(iter += 2), Counted&);
+    }
+    {
+      static_assert( PlusEnabled<std::counted_iterator<random_access_iterator<int*>>>);
+      static_assert(!PlusEnabled<std::counted_iterator<bidirectional_iterator<int*>>>);
+
+      static_assert( PlusEqEnabled<      std::counted_iterator<random_access_iterator<int*>>>);
+      static_assert(!PlusEqEnabled<const std::counted_iterator<random_access_iterator<int*>>>);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/subscript.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/subscript.pass.cpp
new file mode 100644
index 0000000..7e1c320
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/subscript.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr decltype(auto) operator[](iter_difference_t<I> n) const
+//   requires random_access_iterator<I>;
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class Iter>
+concept SubscriptEnabled = requires(Iter& iter) {
+  iter[1];
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+    for (int i = 1; i < 9; ++i)
+      assert(iter[i - 1] == i);
+  }
+  {
+    std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    for (int i = 1; i < 9; ++i)
+      assert(iter[i - 1] == i);
+  }
+
+  {
+    const std::counted_iterator iter(random_access_iterator<int*>{buffer}, 8);
+    assert(iter[0] == 1);
+  }
+  {
+    const std::counted_iterator iter(contiguous_iterator<int*>{buffer}, 8);
+    assert(iter[7] == 8);
+  }
+
+  {
+      static_assert( SubscriptEnabled<std::counted_iterator<random_access_iterator<int*>>>);
+      static_assert(!SubscriptEnabled<std::counted_iterator<bidirectional_iterator<int*>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/three_way_compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/three_way_compare.pass.cpp
new file mode 100644
index 0000000..38df872
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/counted.iterator/three_way_compare.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<common_with<I> I2>
+//   friend constexpr strong_ordering operator<=>(
+//     const counted_iterator& x, const counted_iterator<I2>& y);
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// This iterator is common_with forward_iterator but NOT comparable with it.
+template <class It>
+class CommonWithForwardIter
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    constexpr It base() const {return it_;}
+
+    CommonWithForwardIter() = default;
+    explicit constexpr CommonWithForwardIter(It it) : it_(it) {}
+    constexpr CommonWithForwardIter(const forward_iterator<It>& it) : it_(it.base()) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr CommonWithForwardIter& operator++() {++it_; return *this;}
+    constexpr CommonWithForwardIter operator++(int)
+        {CommonWithForwardIter tmp(*this); ++(*this); return tmp;}
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  auto& Eq = std::strong_ordering::equal;
+  auto& Less = std::strong_ordering::less;
+  auto& Greater = std::strong_ordering::greater;
+
+  {
+    {
+      std::counted_iterator iter1(forward_iterator<int*>(buffer), 8);
+      std::counted_iterator iter2(CommonWithForwardIter<int*>(buffer), 8);
+
+      assert((iter1 <=> iter2) == Eq);
+      assert((iter2 <=> iter1) == Eq);
+      ++iter1;
+      assert((iter1 <=> iter2) == Greater);
+      assert((iter2 <=> iter1) == Less);
+    }
+    {
+      std::counted_iterator iter1(forward_iterator<int*>(buffer), 8);
+      std::counted_iterator iter2(forward_iterator<int*>(buffer), 8);
+
+      assert((iter1 <=> iter2) == Eq);
+      assert((iter2 <=> iter1) == Eq);
+      ++iter1;
+      assert((iter1 <=> iter2) == Greater);
+      assert((iter2 <=> iter1) == Less);
+    }
+  }
+
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/default.sentinel/default.sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/default.sentinel/default.sentinel.pass.cpp
new file mode 100644
index 0000000..2a6b1e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/default.sentinel/default.sentinel.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// struct default_sentinel_t;
+// inline constexpr default_sentinel_t default_sentinel;
+
+#include <iterator>
+
+#include <concepts>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  static_assert(std::is_empty_v<std::default_sentinel_t>);
+  static_assert(std::semiregular<std::default_sentinel_t>);
+
+  static_assert(std::same_as<decltype(std::default_sentinel), const std::default_sentinel_t>);
+
+  std::default_sentinel_t s1;
+  auto s2 = std::default_sentinel_t{};
+  s2 = s1;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.cons/container.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.cons/container.compile.fail.cpp
new file mode 100644
index 0000000..42aab38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.cons/container.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// explicit back_insert_iterator(Cont& x);
+
+// test for explicit
+
+#include <iterator>
+#include <vector>
+
+int main(int, char**)
+{
+    std::vector<int> v;
+    std::back_insert_iterator<std::vector<int> > i = v;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.cons/container.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.cons/container.pass.cpp
new file mode 100644
index 0000000..4b9745a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.cons/container.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// explicit back_insert_iterator(Cont& x); // constexpr in C++20
+
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::back_insert_iterator<C> i(c);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op++/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op++/post.pass.cpp
new file mode 100644
index 0000000..4157f45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op++/post.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// back_insert_iterator<Cont> operator++(int);
+
+#include <iterator>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::back_insert_iterator<C> i(c);
+    std::back_insert_iterator<C> r = i++;
+    r = 0;
+    assert(c.size() == 1);
+    assert(c.back() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op++/pre.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op++/pre.pass.cpp
new file mode 100644
index 0000000..d0d043f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op++/pre.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// back_insert_iterator<Cont>& operator++();
+
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::back_insert_iterator<C> i(c);
+    std::back_insert_iterator<C>& r = ++i;
+    assert(&r == &i);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op=/lv_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op=/lv_value.pass.cpp
new file mode 100644
index 0000000..d1e7c78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op=/lv_value.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// requires CopyConstructible<Cont::value_type>
+//   back_insert_iterator<Cont>&
+//   operator=(const Cont::value_type& value);
+
+#include <iterator>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX14 bool
+test(C c)
+{
+    const typename C::value_type v = typename C::value_type();
+    std::back_insert_iterator<C> i(c);
+    i = v;
+    assert(c.back() == v);
+    return true;
+}
+
+class Copyable
+{
+    int data_;
+public:
+    Copyable() : data_(0) {}
+    ~Copyable() {data_ = -1;}
+
+    friend bool operator==(const Copyable& x, const Copyable& y)
+        {return x.data_ == y.data_;}
+};
+
+int main(int, char**)
+{
+    test(std::vector<Copyable>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op=/rv_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op=/rv_value.pass.cpp
new file mode 100644
index 0000000..8b0355c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op=/rv_value.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <iterator>
+
+// back_insert_iterator
+
+// requires CopyConstructible<Cont::value_type>
+//   back_insert_iterator<Cont>&
+//   operator=(Cont::value_type&& value);
+
+#include <iterator>
+
+#include <vector>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX14 bool
+test(C c)
+{
+    std::back_insert_iterator<C> i(c);
+    i = typename C::value_type();
+    assert(c.back() == typename C::value_type());
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<std::unique_ptr<int> >());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op_astrk/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op_astrk/test.pass.cpp
new file mode 100644
index 0000000..35d399e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.insert.iter.op_astrk/test.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// back_insert_iterator<Cont>& operator*();
+
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::back_insert_iterator<C> i(c);
+    std::back_insert_iterator<C>& r = *i;
+    assert(&r == &i);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.inserter/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.inserter/test.pass.cpp
new file mode 100644
index 0000000..6d682e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iter.ops/back.inserter/test.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <BackInsertionContainer Cont>
+//   back_insert_iterator<Cont>
+//   back_inserter(Cont& x); // constexpr in C++20
+
+// template <BackInsertionContainer Cont>
+//   front_insert_iterator<Cont>
+//   front_inserter(Cont& x); // constexpr in C++20
+
+#include <cassert>
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::back_insert_iterator<C> i = std::back_inserter(c);
+    i = 3;
+    assert(c.size() == 1);
+    assert(c.back() == 3);
+    i = 4;
+    assert(c.size() == 2);
+    assert(c.back() == 4);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..10729e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/implicit_ctad.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <iterator>
+
+// back_insert_iterator
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <iterator>
+#include <string>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    std::string s;
+    std::back_insert_iterator it(s);
+    ASSERT_SAME_TYPE(decltype(it), std::back_insert_iterator<std::string>);
+  }
+  {
+    std::vector<int> v;
+    std::back_insert_iterator it(v);
+    std::back_insert_iterator copy(it);
+    ASSERT_SAME_TYPE(decltype(it), std::back_insert_iterator<std::vector<int>>);
+    ASSERT_SAME_TYPE(decltype(copy), std::back_insert_iterator<std::vector<int>>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..8808a79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// back_insert_iterator
+
+#include <iterator>
+
+#include <vector>
+
+using iterator = std::back_insert_iterator<std::vector<int> >;
+static_assert(!std::indirectly_readable<iterator>);
+static_assert(std::indirectly_writable<iterator, int>);
+static_assert(std::weakly_incrementable<iterator>);
+static_assert(std::input_or_output_iterator<iterator>);
+static_assert(!std::sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::input_iterator<iterator>);
+static_assert(std::indirectly_movable<int*, iterator>);
+static_assert(std::indirectly_movable_storable<int*, iterator>);
+static_assert(std::indirectly_copyable<int*, iterator>);
+static_assert(std::indirectly_copyable_storable<int*, iterator>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/types.pass.cpp
new file mode 100644
index 0000000..f8d3e2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/back.insert.iterator/types.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// back_insert_iterator
+
+// Test nested types and data member:
+
+// template <BackInsertionContainer Cont>
+// class back_insert_iterator
+//  : public iterator<output_iterator_tag, void, void, void, void> // until C++17
+// {
+// protected:
+//   Cont* container;
+// public:
+//   typedef Cont                        container_type;
+//   typedef void                        value_type;
+//   typedef void                        difference_type; // until C++20
+//   typedef ptrdiff_t                   difference_type; // since C++20
+//   typedef void                        reference;
+//   typedef void                        pointer;
+// };
+
+#include <iterator>
+#include <type_traits>
+#include <vector>
+
+#include "test_macros.h"
+
+template <class C>
+struct find_container
+    : private std::back_insert_iterator<C>
+{
+    explicit find_container(C& c) : std::back_insert_iterator<C>(c) {}
+    void test() {this->container = 0;}
+};
+
+template <class C>
+void
+test()
+{
+    typedef std::back_insert_iterator<C> R;
+    C c;
+    find_container<C> q(c);
+    q.test();
+    static_assert((std::is_same<typename R::container_type, C>::value), "");
+    static_assert((std::is_same<typename R::value_type, void>::value), "");
+#if TEST_STD_VER > 17
+    static_assert((std::is_same<typename R::difference_type, std::ptrdiff_t>::value), "");
+#else
+    static_assert((std::is_same<typename R::difference_type, void>::value), "");
+#endif
+    static_assert((std::is_same<typename R::reference, void>::value), "");
+    static_assert((std::is_same<typename R::pointer, void>::value), "");
+    static_assert((std::is_same<typename R::iterator_category, std::output_iterator_tag>::value), "");
+
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, R>::value), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::vector<int> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.cons/container.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.cons/container.compile.fail.cpp
new file mode 100644
index 0000000..7ff5e6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.cons/container.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// explicit front_insert_iterator(Cont& x);
+
+// test for explicit
+
+#include <iterator>
+#include <list>
+
+int main(int, char**)
+{
+    std::list<int> l;
+    std::front_insert_iterator<std::list<int> > i = l;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.cons/container.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.cons/container.pass.cpp
new file mode 100644
index 0000000..c96b852
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.cons/container.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// explicit front_insert_iterator(Cont& x); // constexpr in C++20
+
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::front_insert_iterator<C> i(c);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::list<int>());
+    test(nasty_list<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op++/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op++/post.pass.cpp
new file mode 100644
index 0000000..f67e5d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op++/post.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// front_insert_iterator<Cont> operator++(int);
+
+#include <cassert>
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::front_insert_iterator<C> i(c);
+    std::front_insert_iterator<C> r = i++;
+    r = 0;
+    assert(c.size() == 1);
+    assert(c.back() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::list<int>());
+    test(nasty_list<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op++/pre.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op++/pre.pass.cpp
new file mode 100644
index 0000000..e21f907
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op++/pre.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// front_insert_iterator<Cont>& operator++();
+
+#include <cassert>
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::front_insert_iterator<C> i(c);
+    std::front_insert_iterator<C>& r = ++i;
+    assert(&r == &i);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::list<int>());
+    test(nasty_list<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op=/lv_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op=/lv_value.pass.cpp
new file mode 100644
index 0000000..922a95b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op=/lv_value.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// front_insert_iterator<Cont>&
+//   operator=(const Cont::value_type& value);
+
+#include <cassert>
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    const typename C::value_type v = typename C::value_type();
+    std::front_insert_iterator<C> i(c);
+    i = v;
+    assert(c.front() == v);
+    return true;
+}
+
+class Copyable
+{
+    int data_;
+public:
+    Copyable() : data_(0) {}
+    ~Copyable() {data_ = -1;}
+
+    friend bool operator==(const Copyable& x, const Copyable& y)
+        {return x.data_ == y.data_;}
+};
+
+int main(int, char**)
+{
+    test(std::list<Copyable>());
+    test(nasty_list<Copyable>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op=/rv_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op=/rv_value.pass.cpp
new file mode 100644
index 0000000..fe12cff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op=/rv_value.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <iterator>
+
+// front_insert_iterator
+
+// front_insert_iterator<Cont>&
+//   operator=(Cont::value_type&& value);
+
+#include <cassert>
+#include <iterator>
+#include <list>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::front_insert_iterator<C> i(c);
+    i = typename C::value_type();
+    assert(c.front() == typename C::value_type());
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::list<std::unique_ptr<int> >());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op_astrk/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op_astrk/test.pass.cpp
new file mode 100644
index 0000000..d4d5351
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.insert.iter.op_astrk/test.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// front_insert_iterator<Cont>& operator*();
+
+#include <cassert>
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::front_insert_iterator<C> i(c);
+    std::front_insert_iterator<C>& r = *i;
+    assert(&r == &i);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::list<int>());
+    test(nasty_list<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.inserter/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.inserter/test.pass.cpp
new file mode 100644
index 0000000..9718f8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iter.ops/front.inserter/test.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <FrontInsertionContainer Cont>
+//   front_insert_iterator<Cont>
+//   front_inserter(Cont& x); // constexpr in C++20
+
+#include <cassert>
+#include <iterator>
+#include <list>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::front_insert_iterator<C> i = std::front_inserter(c);
+    i = 3;
+    assert(c.size() == 1);
+    assert(c.front() == 3);
+    i = 4;
+    assert(c.size() == 2);
+    assert(c.front() == 4);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::list<int>());
+    test(nasty_list<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..f91d472
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/implicit_ctad.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <iterator>
+
+// front_insert_iterator
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <deque>
+#include <iterator>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    std::string s;
+    std::front_insert_iterator it(s);
+    ASSERT_SAME_TYPE(decltype(it), std::front_insert_iterator<std::string>);
+  }
+  {
+    std::deque<int> v;
+    std::front_insert_iterator it(v);
+    std::front_insert_iterator copy(it);
+    ASSERT_SAME_TYPE(decltype(it), std::front_insert_iterator<std::deque<int>>);
+    ASSERT_SAME_TYPE(decltype(copy), std::front_insert_iterator<std::deque<int>>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..3865ed6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// front_insert_iterator
+
+#include <iterator>
+
+#include <list>
+
+using iterator = std::front_insert_iterator<std::list<int> >;
+static_assert(!std::indirectly_readable<iterator>);
+static_assert(std::indirectly_writable<iterator, int>);
+static_assert(std::weakly_incrementable<iterator>);
+static_assert(std::input_or_output_iterator<iterator>);
+static_assert(!std::sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::input_iterator<iterator>);
+static_assert(std::indirectly_movable<int*, iterator>);
+static_assert(std::indirectly_movable_storable<int*, iterator>);
+static_assert(std::indirectly_copyable<int*, iterator>);
+static_assert(std::indirectly_copyable_storable<int*, iterator>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/types.pass.cpp
new file mode 100644
index 0000000..f71ba36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/front.insert.iterator/types.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// front_insert_iterator
+
+// Test nested types and data member:
+
+// template <class Container>
+// class front_insert_iterator
+//  : public iterator<output_iterator_tag, void, void, void, void> // until C++17
+// {
+// protected:
+//   Container* container;
+// public:
+//   typedef Container                   container_type;
+//   typedef void                        value_type;
+//   typedef void                        difference_type; // until C++20
+//   typedef ptrdiff_t                   difference_type; // since C++20
+//   typedef void                        reference;
+//   typedef void                        pointer;
+//   typedef output_iterator_tag         iterator_category;
+// };
+
+#include <iterator>
+#include <type_traits>
+#include <vector>
+
+#include "test_macros.h"
+
+template <class C>
+struct find_container
+    : private std::front_insert_iterator<C>
+{
+    explicit find_container(C& c) : std::front_insert_iterator<C>(c) {}
+    void test() {this->container = 0;}
+};
+
+template <class C>
+void
+test()
+{
+    typedef std::front_insert_iterator<C> R;
+    C c;
+    find_container<C> q(c);
+    q.test();
+    static_assert((std::is_same<typename R::container_type, C>::value), "");
+    static_assert((std::is_same<typename R::value_type, void>::value), "");
+#if TEST_STD_VER > 17
+    static_assert((std::is_same<typename R::difference_type, std::ptrdiff_t>::value), "");
+#else
+    static_assert((std::is_same<typename R::difference_type, void>::value), "");
+#endif
+    static_assert((std::is_same<typename R::reference, void>::value), "");
+    static_assert((std::is_same<typename R::pointer, void>::value), "");
+    static_assert((std::is_same<typename R::iterator_category, std::output_iterator_tag>::value), "");
+
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, R>::value), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::vector<int> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.cons/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.cons/test.pass.cpp
new file mode 100644
index 0000000..af2e854
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.cons/test.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// insert_iterator
+
+// insert_iterator(Cont& x, Cont::iterator i); // constexpr in C++20
+
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::insert_iterator<C> i(c, c.begin());
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op++/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op++/post.pass.cpp
new file mode 100644
index 0000000..3447df9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op++/post.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// insert_iterator
+
+// insert_iterator<Cont> operator++(int);
+
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::insert_iterator<C> i(c, c.end());
+    std::insert_iterator<C> r = i++;
+    r = 0;
+    assert(c.size() == 1);
+    assert(c.back() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op++/pre.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op++/pre.pass.cpp
new file mode 100644
index 0000000..0bfb572
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op++/pre.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// insert_iterator
+
+// insert_iterator<Cont>& operator++();
+
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::insert_iterator<C> i(c, c.end());
+    std::insert_iterator<C>& r = ++i;
+    assert(&r == &i);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op=/lv_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op=/lv_value.pass.cpp
new file mode 100644
index 0000000..db7f123
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op=/lv_value.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// insert_iterator
+
+// requires CopyConstructible<Cont::value_type>
+//   insert_iterator<Cont>&
+//   operator=(const Cont::value_type& value);
+
+#include <iterator>
+#include <vector>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+template <class C>
+void
+test(C c1, typename C::difference_type j,
+     typename C::value_type x1, typename C::value_type x2,
+     typename C::value_type x3, const C& c2)
+{
+    std::insert_iterator<C> q(c1, c1.begin() + j);
+    q = x1;
+    q = x2;
+    q = x3;
+    assert(c1 == c2);
+}
+
+template <class C>
+void
+insert3at(C& c, typename C::iterator i,
+     typename C::value_type x1, typename C::value_type x2,
+     typename C::value_type x3)
+{
+    i = c.insert(i, x1);
+    i = c.insert(++i, x2);
+    c.insert(++i, x3);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::vector<int> C;
+    C c1;
+    for (int i = 0; i < 3; ++i)
+        c1.push_back(i);
+    C c2 = c1;
+    insert3at(c2, c2.begin(), 'a', 'b', 'c');
+    test(c1, 0, 'a', 'b', 'c', c2);
+    c2 = c1;
+    insert3at(c2, c2.begin()+1, 'a', 'b', 'c');
+    test(c1, 1, 'a', 'b', 'c', c2);
+    c2 = c1;
+    insert3at(c2, c2.begin()+2, 'a', 'b', 'c');
+    test(c1, 2, 'a', 'b', 'c', c2);
+    c2 = c1;
+    insert3at(c2, c2.begin()+3, 'a', 'b', 'c');
+    test(c1, 3, 'a', 'b', 'c', c2);
+    }
+    {
+    typedef nasty_vector<int> C;
+    C c1;
+    for (int i = 0; i < 3; ++i)
+        c1.push_back(i);
+    C c2 = c1;
+    insert3at(c2, c2.begin(), 'a', 'b', 'c');
+    test(c1, 0, 'a', 'b', 'c', c2);
+    c2 = c1;
+    insert3at(c2, c2.begin()+1, 'a', 'b', 'c');
+    test(c1, 1, 'a', 'b', 'c', c2);
+    c2 = c1;
+    insert3at(c2, c2.begin()+2, 'a', 'b', 'c');
+    test(c1, 2, 'a', 'b', 'c', c2);
+    c2 = c1;
+    insert3at(c2, c2.begin()+3, 'a', 'b', 'c');
+    test(c1, 3, 'a', 'b', 'c', c2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op=/rv_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op=/rv_value.pass.cpp
new file mode 100644
index 0000000..811b1df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op=/rv_value.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <iterator>
+
+// insert_iterator
+
+// requires CopyConstructible<Cont::value_type>
+//   insert_iterator<Cont>&
+//   operator=(const Cont::value_type& value);
+
+#include <iterator>
+
+#include <utility>
+#include <vector>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+void
+test(C c1, typename C::difference_type j,
+     typename C::value_type x1, typename C::value_type x2,
+     typename C::value_type x3, const C& c2)
+{
+    std::insert_iterator<C> q(c1, c1.begin() + j);
+    q = std::move(x1);
+    q = std::move(x2);
+    q = std::move(x3);
+    assert(c1 == c2);
+}
+
+template <class C>
+void
+insert3at(C& c, typename C::iterator i,
+     typename C::value_type x1, typename C::value_type x2,
+     typename C::value_type x3)
+{
+    i = c.insert(i, std::move(x1));
+    i = c.insert(++i, std::move(x2));
+    c.insert(++i, std::move(x3));
+}
+
+struct do_nothing
+{
+    void operator()(void*) const {}
+};
+
+int main(int, char**)
+{
+    {
+    typedef std::unique_ptr<int, do_nothing> Ptr;
+    typedef std::vector<Ptr> C;
+    C c1;
+    int x[6] = {0};
+    for (int i = 0; i < 3; ++i)
+        c1.push_back(Ptr(x+i));
+    C c2;
+    for (int i = 0; i < 3; ++i)
+        c2.push_back(Ptr(x+i));
+    insert3at(c2, c2.begin(), Ptr(x+3), Ptr(x+4), Ptr(x+5));
+    test(std::move(c1), 0, Ptr(x+3), Ptr(x+4), Ptr(x+5), c2);
+    c1.clear();
+    for (int i = 0; i < 3; ++i)
+        c1.push_back(Ptr(x+i));
+    c2.clear();
+    for (int i = 0; i < 3; ++i)
+        c2.push_back(Ptr(x+i));
+    insert3at(c2, c2.begin()+1, Ptr(x+3), Ptr(x+4), Ptr(x+5));
+    test(std::move(c1), 1, Ptr(x+3), Ptr(x+4), Ptr(x+5), c2);
+    c1.clear();
+    for (int i = 0; i < 3; ++i)
+        c1.push_back(Ptr(x+i));
+    c2.clear();
+    for (int i = 0; i < 3; ++i)
+        c2.push_back(Ptr(x+i));
+    insert3at(c2, c2.begin()+2, Ptr(x+3), Ptr(x+4), Ptr(x+5));
+    test(std::move(c1), 2, Ptr(x+3), Ptr(x+4), Ptr(x+5), c2);
+    c1.clear();
+    for (int i = 0; i < 3; ++i)
+        c1.push_back(Ptr(x+i));
+    c2.clear();
+    for (int i = 0; i < 3; ++i)
+        c2.push_back(Ptr(x+i));
+    insert3at(c2, c2.begin()+3, Ptr(x+3), Ptr(x+4), Ptr(x+5));
+    test(std::move(c1), 3, Ptr(x+3), Ptr(x+4), Ptr(x+5), c2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op_astrk/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op_astrk/test.pass.cpp
new file mode 100644
index 0000000..d63497b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/insert.iter.op_astrk/test.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// insert_iterator
+
+// insert_iterator<Cont>& operator*();
+
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::insert_iterator<C> i(c, c.end());
+    std::insert_iterator<C>& r = *i;
+    assert(&r == &i);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp
new file mode 100644
index 0000000..088989f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iter.ops/inserter/test.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <InsertionContainer Cont>
+//   insert_iterator<Cont>
+//   inserter(Cont& x, Cont::iterator i);
+
+#include <cassert>
+#include <iterator>
+#include <vector>
+
+#include "test_macros.h"
+#include "nasty_containers.h"
+#include "test_constexpr_container.h"
+
+template <class C>
+TEST_CONSTEXPR_CXX20 bool
+test(C c)
+{
+    std::insert_iterator<C> i = std::inserter(c, c.end());
+    i = 0;
+    assert(c.size() == 1);
+    assert(c.back() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::vector<int>());
+    test(nasty_vector<int>());
+#if TEST_STD_VER >= 20
+    test(ConstexprFixedCapacityDeque<int, 10>());
+    static_assert(test(ConstexprFixedCapacityDeque<int, 10>()));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/cxx20_iter_member.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/cxx20_iter_member.pass.cpp
new file mode 100644
index 0000000..14a4f89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/cxx20_iter_member.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// insert_iterator
+// C++20 and above use ranges::iterator_t<Container> instead of Container::iterator.
+
+#include <iterator>
+
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct NoIteratorAlias {
+    double data_[3] = {};
+    double *begin();
+
+    struct value_type {
+        constexpr value_type(double d) : x(static_cast<int>(d)) {}
+        constexpr operator double() const { return x; }
+
+        int x;
+    };
+
+    template <class T>
+    constexpr double *insert(double *pos, T value) {
+        static_assert(std::is_same_v<T, value_type>);
+        *pos = value;
+        return pos;
+    }
+};
+
+static_assert(std::is_constructible_v<std::insert_iterator<NoIteratorAlias>, NoIteratorAlias&, double*>);
+static_assert(
+    !std::is_constructible_v<std::insert_iterator<NoIteratorAlias>, NoIteratorAlias&, NoIteratorAlias::value_type*>);
+
+constexpr bool test() {
+    NoIteratorAlias c;
+    double half = 0.5;
+    auto it = std::insert_iterator<NoIteratorAlias>(c, c.data_);
+    ASSERT_SAME_TYPE(decltype(std::inserter(c, c.data_)), std::insert_iterator<NoIteratorAlias>);
+    *it++ = 1 + half;  // test that RHS is still implicitly converted to _Container::value_type
+    *it++ = 2 + half;
+    assert(c.data_[0] == 1.0);
+    assert(c.data_[1] == 2.0);
+    assert(c.data_[2] == 0.0);
+    return true;
+}
+
+int main(int, char**) {
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..33e1667
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// insert_iterator
+
+#include <iterator>
+
+#include <vector>
+
+using iterator = std::insert_iterator<std::vector<int> >;
+static_assert(!std::indirectly_readable<iterator>);
+static_assert(std::indirectly_writable<iterator, int>);
+static_assert(std::weakly_incrementable<iterator>);
+static_assert(std::input_or_output_iterator<iterator>);
+static_assert(!std::sentinel_for<iterator, iterator>);
+static_assert(!std::input_iterator<iterator>);
+static_assert(std::indirectly_movable<int*, iterator>);
+static_assert(std::indirectly_movable_storable<int*, iterator>);
+static_assert(std::indirectly_copyable<int*, iterator>);
+static_assert(std::indirectly_copyable_storable<int*, iterator>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/types.pass.cpp
new file mode 100644
index 0000000..0886486
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/insert.iterators/insert.iterator/types.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// insert_iterator
+
+// Test nested types and data members:
+
+// template <InsertionContainer Cont>
+// class insert_iterator
+//  : public iterator<output_iterator_tag, void, void, void, void> // until C++17
+// {
+// protected:
+//   Cont* container;
+//   Cont::iterator iter;
+// public:
+//   typedef Cont                   container_type;
+//   typedef void                   value_type;
+//   typedef void                   difference_type; // until C++20
+//   typedef ptrdiff_t              difference_type; // since C++20
+//   typedef void                   reference;
+//   typedef void                   pointer;
+// };
+
+#include <iterator>
+#include <type_traits>
+#include <vector>
+#include "test_macros.h"
+
+template <class C>
+struct find_members
+    : private std::insert_iterator<C>
+{
+    explicit find_members(C& c) : std::insert_iterator<C>(c, c.begin()) {}
+    void test()
+    {
+        this->container = 0;
+        TEST_IGNORE_NODISCARD (this->iter == this->iter);
+    }
+};
+
+template <class C>
+void
+test()
+{
+    typedef std::insert_iterator<C> R;
+    C c;
+    find_members<C> q(c);
+    q.test();
+    static_assert((std::is_same<typename R::container_type, C>::value), "");
+    static_assert((std::is_same<typename R::value_type, void>::value), "");
+#if TEST_STD_VER > 17
+    static_assert((std::is_same<typename R::difference_type, std::ptrdiff_t>::value), "");
+#else
+    static_assert((std::is_same<typename R::difference_type, void>::value), "");
+#endif
+    static_assert((std::is_same<typename R::reference, void>::value), "");
+    static_assert((std::is_same<typename R::pointer, void>::value), "");
+    static_assert((std::is_same<typename R::iterator_category, std::output_iterator_tag>::value), "");
+
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, R>::value), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::vector<int> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/arrow.pass.cpp
new file mode 100644
index 0000000..ec992eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/arrow.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// decltype(auto) operator->() const
+//   requires see below;
+
+#include <iterator>
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "types.h"
+
+void test() {
+  // Case 1: http://eel.is/c++draft/iterators.common#common.iter.access-5.1
+  {
+    auto check = []<class Iterator>() {
+      int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+      Iterator iter(buffer);
+      using Common = std::common_iterator<Iterator, sentinel_wrapper<Iterator>>;
+
+      Common common(iter);
+      std::same_as<Iterator> auto result = common.operator->();
+      assert(base(result) == buffer);
+
+      Common const ccommon(iter);
+      std::same_as<Iterator> auto cresult = ccommon.operator->();
+      assert(base(cresult) == buffer);
+    };
+
+    check.operator()<contiguous_iterator<int*>>();
+    check.operator()<int*>();
+  }
+
+  // Case 2: http://eel.is/c++draft/iterators.common#common.iter.access-5.2
+  {
+    auto check = []<class Iterator>() {
+      int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+      Iterator iter(buffer);
+      using Common = std::common_iterator<Iterator, sentinel_type<int*>>;
+
+      Common common(iter);
+      std::same_as<int*> auto result = common.operator->();
+      assert(result == buffer);
+
+      Common const ccommon(iter);
+      std::same_as<int*> auto cresult = ccommon.operator->();
+      assert(cresult == buffer);
+    };
+
+    check.operator()<simple_iterator<int*>>();
+    check.operator()<cpp17_input_iterator<int*>>();
+    // cpp20_input_iterator can't be used with common_iterator because it's not copyable
+    check.operator()<forward_iterator<int*>>();
+    check.operator()<bidirectional_iterator<int*>>();
+    check.operator()<random_access_iterator<int*>>();
+  }
+
+  // Case 3: http://eel.is/c++draft/iterators.common#common.iter.access-5.3
+  {
+    auto check = []<class Iterator>() {
+      int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+      Iterator iter(buffer);
+      using Common = std::common_iterator<Iterator, sentinel_type<int*>>;
+
+      Common common(iter);
+      auto proxy = common.operator->();
+      std::same_as<int const*> auto result = proxy.operator->();
+      assert(result != buffer); // we copied to a temporary proxy
+      assert(*result == *buffer);
+
+      Common const ccommon(iter);
+      auto cproxy = ccommon.operator->();
+      std::same_as<int const*> auto cresult = cproxy.operator->();
+      assert(cresult != buffer); // we copied to a temporary proxy
+      assert(*cresult == *buffer);
+    };
+
+    check.operator()<value_iterator<int*>>();
+    check.operator()<void_plus_plus_iterator<int*>>();
+  }
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/assign.pass.cpp
new file mode 100644
index 0000000..18e7176
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/assign.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I2, class S2>
+//   requires convertible_to<const I2&, I> && convertible_to<const S2&, S> &&
+//            assignable_from<I&, const I2&> && assignable_from<S&, const S2&>
+//     common_iterator& operator=(const common_iterator<I2, S2>& x);
+
+#include <iterator>
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+void test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto iter1 = cpp17_input_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(cpp17_input_iterator<int*>(buffer + 1));
+
+    assert(*commonIter1 == 1);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 != commonIter2);
+
+    commonIter1 = commonIter2;
+
+    assert(*commonIter1 == 2);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 == commonIter2);
+  }
+  {
+    auto iter1 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(forward_iterator<int*>(buffer + 1));
+
+    assert(*commonIter1 == 1);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 != commonIter2);
+
+    commonIter1 = commonIter2;
+
+    assert(*commonIter1 == 2);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 == commonIter2);
+  }
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1 + 1);
+    auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 7});
+
+    assert(*commonIter1 == 1);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 != commonIter2);
+
+    commonIter1 = commonIter2;
+
+    assert(*commonIter1 == 2);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 == commonIter2);
+
+    assert(std::next(commonIter1, 6) != commonSent1);
+    assert(std::next(commonIter1, 6) == commonSent2);
+
+    commonSent1 = commonSent2;
+
+    assert(std::next(commonIter1, 6) == commonSent1);
+    assert(std::next(commonIter1, 6) == commonSent2);
+  }
+  {
+    auto iter1 = assignable_iterator<int*>(buffer);
+    auto iter2 = forward_iterator<int*>(buffer + 1);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    auto commonIter2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(iter2);
+    auto commonSent2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(sentinel_type<int*>{buffer + 7});
+
+    assert(*commonIter1 == 1);
+    assert(*commonIter2 == 2);
+
+    commonIter1 = commonIter2;
+
+    assert(*commonIter1 == 2);
+    assert(*commonIter2 == 2);
+    assert(commonIter1 == commonIter2);
+
+    assert(std::next(commonIter1, 6) != commonSent1);
+    assert(std::next(commonIter1, 6) == commonSent2);
+
+    commonSent1 = commonSent2;
+
+    assert(std::next(commonIter1, 6) == commonSent1);
+    assert(std::next(commonIter1, 6) == commonSent2);
+
+    commonIter1 = commonSent1;
+
+    assert(commonIter1 == commonSent2);
+
+    commonIter1 = commonSent2;
+
+    assert(commonIter1 == commonSent2);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    auto iter1 = maybe_valueless_iterator<int*>(buffer);
+    auto iter2 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent2 = std::common_iterator<decltype(iter1),
+      sentinel_throws_on_convert<int*>>(sentinel_throws_on_convert<int*>{buffer + 8});
+    auto commonIter2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(iter2);
+
+    try {
+      commonIter1 = commonSent2;
+      assert(false);
+    } catch (int x) {
+      assert(x == 42);
+      commonIter1 = commonIter2;
+    }
+
+    assert(*commonIter1 == 1);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/constraints.compile.pass.cpp
new file mode 100644
index 0000000..a18538c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/constraints.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_or_output_iterator I, sentinel_for<I> S>
+//   requires (!same_as<I, S> && copyable<I>)
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+template<class I, class S>
+concept ValidCommonIterator = requires {
+  typename std::common_iterator<I, S>;
+};
+
+static_assert( ValidCommonIterator<int*, const int*>);
+static_assert(!ValidCommonIterator<int, int>); // !input_or_output_iterator<I>
+static_assert(!ValidCommonIterator<int*, float*>); // !sentinel_for<S, I>
+static_assert(!ValidCommonIterator<int*, int*>); // !same_as<I, S>
+static_assert(!ValidCommonIterator<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>); // !copyable<I>
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.converting.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.converting.pass.cpp
new file mode 100644
index 0000000..741654e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.converting.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I2, class S2>
+//   requires convertible_to<const I2&, I> && convertible_to<const S2&, S>
+//     constexpr common_iterator(const common_iterator<I2, S2>& x);
+
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+constexpr bool test()
+{
+  struct Base {};
+  struct Derived : Base {};
+
+  using BaseIt = std::common_iterator<Base*, const Base*>;
+  using DerivedIt = std::common_iterator<Derived*, const Derived*>;
+  static_assert(std::is_convertible_v<DerivedIt, BaseIt>); // Derived* to Base*
+  static_assert(!std::is_constructible_v<DerivedIt, BaseIt>); // Base* to Derived*
+
+  Derived a[10] = {};
+  DerivedIt it = DerivedIt(a); // the iterator type
+  BaseIt jt = BaseIt(it);
+  assert(jt == BaseIt(a));
+
+  it = DerivedIt((const Derived*)a); // the sentinel type
+  jt = BaseIt(it);
+  assert(jt == BaseIt(a));
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.default.pass.cpp
new file mode 100644
index 0000000..b7b02be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr common_iterator() requires default_initializable<I> = default;
+
+#include <iterator>
+#include <cassert>
+
+#include "test_iterators.h"
+
+constexpr bool test()
+{
+  {
+    using It = cpp17_input_iterator<int*>;
+    using CommonIt = std::common_iterator<It, sentinel_wrapper<It>>;
+    static_assert(!std::is_default_constructible_v<It>); // premise
+    static_assert(!std::is_default_constructible_v<CommonIt>); // conclusion
+  }
+  {
+    // The base iterator is value-initialized.
+    std::common_iterator<int*, sentinel_wrapper<int*>> c;
+    assert(c == nullptr);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.iter.pass.cpp
new file mode 100644
index 0000000..57d89e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.iter.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr common_iterator(I i);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_iterators.h"
+
+template<class It>
+constexpr bool test() {
+  using CommonIt = std::common_iterator<It, sentinel_wrapper<It>>;
+  int a[] = {1,2,3};
+  It it = It(a);
+  CommonIt lv = CommonIt(it);
+  assert(&*lv == a);
+  CommonIt rv = CommonIt(std::move(it));
+  assert(&*rv == a);
+
+  return true;
+}
+
+int main(int, char**) {
+  test<cpp17_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  test<const int*>();
+
+  static_assert(test<cpp17_input_iterator<int*>>());
+  static_assert(test<forward_iterator<int*>>());
+  static_assert(test<bidirectional_iterator<int*>>());
+  static_assert(test<random_access_iterator<int*>>());
+  static_assert(test<contiguous_iterator<int*>>());
+  static_assert(test<int*>());
+  static_assert(test<const int*>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.sentinel.pass.cpp
new file mode 100644
index 0000000..6e1c213
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/ctor.sentinel.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr common_iterator(S s);
+
+#include <iterator>
+#include <cassert>
+#include <type_traits>
+
+#include "test_iterators.h"
+
+template<class It>
+constexpr bool test() {
+  using Sent = sentinel_wrapper<It>;
+  using CommonIt = std::common_iterator<It, Sent>;
+  int a[] = {1,2,3};
+  It it = It(a);
+  Sent sent = Sent(It(a+1));
+
+  CommonIt lv = CommonIt(sent);
+  assert(lv == CommonIt(sent));
+  assert(lv != CommonIt(it));
+  if (!std::is_constant_evaluated()) {
+    assert(lv == std::next(CommonIt(it)));
+  }
+
+  CommonIt rv = CommonIt(std::move(sent));
+  assert(rv == CommonIt(sent));
+  assert(rv != CommonIt(it));
+  if (!std::is_constant_evaluated()) {
+    assert(rv == std::next(CommonIt(it)));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test<cpp17_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  test<const int*>();
+
+  static_assert(test<cpp17_input_iterator<int*>>());
+  static_assert(test<forward_iterator<int*>>());
+  static_assert(test<bidirectional_iterator<int*>>());
+  static_assert(test<random_access_iterator<int*>>());
+  static_assert(test<contiguous_iterator<int*>>());
+  static_assert(test<int*>());
+  static_assert(test<const int*>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/deref.pass.cpp
new file mode 100644
index 0000000..69ef362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/deref.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// decltype(auto) operator*();
+// decltype(auto) operator*() const
+//   requires dereferenceable<const I>;
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+void test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto iter1 = simple_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto iter2 = simple_iterator<int*>(buffer);
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+
+    assert(*iter1 == 1);
+    assert(*commonIter1 == 1);
+
+    assert(*iter2 == 1);
+    assert(*commonIter2 == 1);
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+  }
+  {
+    auto iter1 = value_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto iter2 = value_iterator<int*>(buffer);
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+
+    assert(*iter1 == 1);
+    assert(*commonIter1 == 1);
+
+    assert(*iter2 == 1);
+    assert(*commonIter2 == 1);
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+  }
+  {
+    auto iter1 = cpp17_input_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto iter2 = cpp17_input_iterator<int*>(buffer);
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+
+    assert(*iter1 == 1);
+    assert(*commonIter1 == 1);
+
+    assert(*iter2 == 1);
+    assert(*commonIter2 == 1);
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+  }
+  {
+    auto iter1 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto iter2 = forward_iterator<int*>(buffer);
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+
+    assert(*iter1 == 1);
+    assert(*commonIter1 == 1);
+
+    assert(*iter2 == 1);
+    assert(*commonIter2 == 1);
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+  }
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto iter2 = random_access_iterator<int*>(buffer);
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+
+    assert(*iter1 == 1);
+    assert(*commonIter1 == 1);
+
+    assert(*iter2 == 1);
+    assert(*commonIter2 == 1);
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+  }
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/eq.pass.cpp
new file mode 100644
index 0000000..ae6115b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/eq.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I2, sentinel_for<I> S2>
+//   requires sentinel_for<S, I2>
+// friend bool operator==(
+//   const common_iterator& x, const common_iterator<I2, S2>& y);
+// template<class I2, sentinel_for<I> S2>
+//   requires sentinel_for<S, I2> && equality_comparable_with<I, I2>
+// friend bool operator==(
+//   const common_iterator& x, const common_iterator<I2, S2>& y);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+void test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto iter1 = simple_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    const auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(commonIter1 != commonSent1);
+    assert(commonIter2 != commonSent2);
+    assert(commonSent1 != commonIter1);
+    assert(commonSent2 != commonIter2);
+
+    for (auto i = 1; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+    assert(commonSent1 == commonIter1);
+  }
+  {
+    auto iter1 = value_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    const auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(commonIter1 != commonSent1);
+    assert(commonIter2 != commonSent2);
+    assert(commonSent1 != commonIter1);
+    assert(commonSent2 != commonIter2);
+
+    for (auto i = 1; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+    assert(commonSent1 == commonIter1);
+  }
+  {
+    auto iter1 = simple_iterator<int*>(buffer);
+    auto iter2 = comparable_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto commonIter2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(iter2);
+    const auto commonSent2 = std::common_iterator<decltype(iter2), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(commonIter1 == commonIter2);
+    assert(commonSent1 != commonIter2);
+    assert(commonSent1 == commonSent2);
+    assert(commonSent2 == commonSent1);
+
+    assert(commonIter1 != commonSent1);
+    assert(commonIter2 != commonSent2);
+    assert(commonSent1 != commonIter1);
+    assert(commonSent2 != commonIter2);
+
+    assert(commonIter1 == commonIter2);
+    assert(commonIter2 == commonIter1);
+
+    for (auto i = 1; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+    assert(commonSent1 == commonIter1);
+
+    // This check may *seem* incorrect (our iterators point to two completely different
+    // elements of buffer). However, this is actually what the Standard wants.
+    // See https://eel.is/c++draft/iterators.common#common.iter.cmp-2.
+    assert(commonIter1 == commonIter2);
+  }
+  {
+    auto iter1 = cpp17_input_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    const auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(commonIter1 != commonSent1);
+    assert(commonIter2 != commonSent2);
+    assert(commonSent1 != commonIter1);
+    assert(commonSent2 != commonIter2);
+
+    for (auto i = 1; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+    assert(commonSent1 == commonIter1);
+  }
+  {
+    auto iter1 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    const auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(commonIter1 != commonSent1);
+    assert(commonIter2 != commonSent2);
+    assert(commonSent1 != commonIter1);
+    assert(commonSent2 != commonIter2);
+
+    for (auto i = 1; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+    assert(commonSent1 == commonIter1);
+  }
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    const auto commonIter2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    const auto commonSent2 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(commonIter1 != commonSent1);
+    assert(commonIter2 != commonSent2);
+    assert(commonSent1 != commonIter1);
+    assert(commonSent2 != commonIter2);
+
+    assert(commonSent1 == commonSent2);
+    assert(commonSent2 == commonSent1);
+
+    for (auto i = 1; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+    assert(commonSent1 == commonIter1);
+  }
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iter_move.pass.cpp
new file mode 100644
index 0000000..8b3cbc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iter_move.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend iter_rvalue_reference_t<I> iter_move(const common_iterator& i)
+//   noexcept(noexcept(ranges::iter_move(declval<const I&>())))
+//     requires input_iterator<I>;
+
+#include <iterator>
+#include <cassert>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+struct IterMovingIt {
+  using value_type = int;
+  using difference_type = int;
+  explicit IterMovingIt() = default;
+  IterMovingIt(const IterMovingIt&); // copyable, but this test shouldn't make copies
+  IterMovingIt(IterMovingIt&&) = default;
+  IterMovingIt& operator=(const IterMovingIt&);
+  int& operator*() const;
+  constexpr IterMovingIt& operator++() { return *this; }
+  IterMovingIt operator++(int);
+  friend constexpr int iter_move(const IterMovingIt&) {
+    return 42;
+  }
+  bool operator==(std::default_sentinel_t) const;
+};
+static_assert(std::input_iterator<IterMovingIt>);
+
+constexpr bool test() {
+  {
+    using It = int*;
+    using CommonIt = std::common_iterator<It, sentinel_wrapper<It>>;
+    int a[] = {1, 2, 3};
+    CommonIt it = CommonIt(It(a));
+    ASSERT_NOEXCEPT(iter_move(it));
+    ASSERT_NOEXCEPT(std::ranges::iter_move(it));
+    ASSERT_SAME_TYPE(decltype(iter_move(it)), int&&);
+    ASSERT_SAME_TYPE(decltype(std::ranges::iter_move(it)), int&&);
+    assert(iter_move(it) == 1);
+    if (!std::is_constant_evaluated()) {
+      ++it;
+      assert(iter_move(it) == 2);
+    }
+  }
+  {
+    using It = const int*;
+    using CommonIt = std::common_iterator<It, sentinel_wrapper<It>>;
+    int a[] = {1, 2, 3};
+    CommonIt it = CommonIt(It(a));
+    ASSERT_NOEXCEPT(iter_move(it));
+    ASSERT_NOEXCEPT(std::ranges::iter_move(it));
+    ASSERT_SAME_TYPE(decltype(iter_move(it)), const int&&);
+    ASSERT_SAME_TYPE(decltype(std::ranges::iter_move(it)), const int&&);
+    assert(iter_move(it) == 1);
+    if (!std::is_constant_evaluated()) {
+      ++it;
+      assert(iter_move(it) == 2);
+    }
+  }
+  {
+    using It = IterMovingIt;
+    using CommonIt = std::common_iterator<It, std::default_sentinel_t>;
+    CommonIt it = CommonIt(It());
+    ASSERT_NOT_NOEXCEPT(iter_move(it));
+    ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(it));
+    ASSERT_SAME_TYPE(decltype(iter_move(it)), int);
+    ASSERT_SAME_TYPE(decltype(std::ranges::iter_move(it)), int);
+    assert(iter_move(it) == 42);
+    if (!std::is_constant_evaluated()) {
+      ++it;
+      assert(iter_move(it) == 42);
+    }
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iter_swap.pass.cpp
new file mode 100644
index 0000000..de58f5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iter_swap.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<indirectly_swappable<I> I2, class S2>
+//   friend constexpr void iter_swap(const common_iterator& x, const common_iterator<I2, S2>& y)
+//     noexcept(noexcept(ranges::iter_swap(declval<const I&>(), declval<const I2&>())));
+
+#include <iterator>
+#include <cassert>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template<int K>
+struct IterSwappingIt {
+  using value_type = int;
+  using difference_type = int;
+  constexpr explicit IterSwappingIt(int *swaps) : swaps_(swaps) {}
+  IterSwappingIt(const IterSwappingIt&); // copyable, but this test shouldn't make copies
+  IterSwappingIt(IterSwappingIt&&) = default;
+  IterSwappingIt& operator=(const IterSwappingIt&);
+  int& operator*() const;
+  constexpr IterSwappingIt& operator++() { return *this; }
+  IterSwappingIt operator++(int);
+
+  template<int L>
+  friend constexpr int iter_swap(const IterSwappingIt<K>& lhs, const IterSwappingIt<L>& rhs) {
+    *lhs.swaps_ += 10;
+    *rhs.swaps_ += 1;
+    return 42; // should be accepted but ignored
+  }
+
+  bool operator==(std::default_sentinel_t) const;
+
+  int *swaps_ = nullptr;
+};
+static_assert(std::input_iterator<IterSwappingIt<0>>);
+static_assert(std::indirectly_swappable<IterSwappingIt<0>, IterSwappingIt<0>>);
+static_assert(std::indirectly_swappable<IterSwappingIt<0>, IterSwappingIt<1>>);
+
+constexpr bool test() {
+  {
+    using It = int*;
+    using CommonIt = std::common_iterator<It, sentinel_wrapper<It>>;
+    static_assert(std::indirectly_swappable<CommonIt, CommonIt>);
+
+    int a[] = {1, 2, 3};
+    CommonIt it = CommonIt(It(a));
+    CommonIt jt = CommonIt(It(a+1));
+    ASSERT_NOEXCEPT(iter_swap(it, jt));
+    ASSERT_SAME_TYPE(decltype(iter_swap(it, jt)), void);
+    iter_swap(it, jt);
+    assert(a[0] == 2);
+    assert(a[1] == 1);
+  }
+  {
+    using It = const int*;
+    using CommonIt = std::common_iterator<It, sentinel_wrapper<It>>;
+    static_assert(!std::indirectly_swappable<CommonIt, CommonIt>);
+  }
+  {
+    using It = IterSwappingIt<0>;
+    using CommonIt = std::common_iterator<It, std::default_sentinel_t>;
+    static_assert(std::indirectly_swappable<CommonIt, CommonIt>);
+
+    int iswaps = 100;
+    int jswaps = 100;
+    CommonIt it = CommonIt(It(&iswaps));
+    CommonIt jt = CommonIt(It(&jswaps));
+    ASSERT_NOT_NOEXCEPT(iter_swap(it, jt));
+    ASSERT_SAME_TYPE(decltype(iter_swap(it, jt)), void);
+    iter_swap(it, jt); // lvalue iterators
+    assert(iswaps == 110);
+    assert(jswaps == 101);
+    iter_swap(CommonIt(It(&iswaps)), CommonIt(It(&jswaps))); // rvalue iterators
+    assert(iswaps == 120);
+    assert(jswaps == 102);
+    std::ranges::iter_swap(it, jt);
+    assert(iswaps == 130);
+    assert(jswaps == 103);
+  }
+  {
+    using It = IterSwappingIt<0>;
+    using Jt = IterSwappingIt<1>;
+    static_assert(std::indirectly_swappable<It, Jt>);
+    using CommonIt = std::common_iterator<It, std::default_sentinel_t>;
+    using CommonJt = std::common_iterator<Jt, std::default_sentinel_t>;
+    static_assert(std::indirectly_swappable<CommonIt, CommonJt>);
+
+    int iswaps = 100;
+    int jswaps = 100;
+    CommonIt it = CommonIt(It(&iswaps));
+    CommonJt jt = CommonJt(Jt(&jswaps));
+    ASSERT_NOT_NOEXCEPT(iter_swap(it, jt));
+    ASSERT_SAME_TYPE(decltype(iter_swap(it, jt)), void);
+    iter_swap(it, jt); // lvalue iterators
+    assert(iswaps == 110);
+    assert(jswaps == 101);
+    iter_swap(CommonIt(It(&iswaps)), CommonJt(Jt(&jswaps))); // rvalue iterators
+    assert(iswaps == 120);
+    assert(jswaps == 102);
+    std::ranges::iter_swap(it, jt);
+    assert(iswaps == 130);
+    assert(jswaps == 103);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iterator_traits.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iterator_traits.compile.pass.cpp
new file mode 100644
index 0000000..48946db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/iterator_traits.compile.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_iterator I, class S>
+//   struct iterator_traits<common_iterator<I, S>>;
+
+#include <iterator>
+
+#include <cstddef>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "types.h"
+
+template<class T>
+concept HasIteratorConcept = requires { typename T::iterator_concept; };
+
+struct NonVoidOutputIterator {
+    using value_type = int;
+    using difference_type = std::ptrdiff_t;
+    const NonVoidOutputIterator& operator*() const;
+    NonVoidOutputIterator& operator++();
+    NonVoidOutputIterator& operator++(int);
+    void operator=(int) const;
+};
+
+void test() {
+  {
+    using Iter = simple_iterator<int*>;
+    using CommonIter = std::common_iterator<Iter, sentinel_type<int*>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_concept, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, int*>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+  {
+    using Iter = value_iterator<int*>;
+    using CommonIter = std::common_iterator<Iter, sentinel_type<int*>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_concept, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    // Note: IterTraits::pointer == __proxy.
+    static_assert(!std::same_as<IterTraits::pointer, int*>);
+    static_assert(std::same_as<IterTraits::reference, int>);
+  }
+  // Test with an output_iterator that has a void value_type
+  {
+    using Iter = cpp17_output_iterator<int*>;
+    using CommonIter = std::common_iterator<Iter, sentinel_type<int*>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(!HasIteratorConcept<IterTraits>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::output_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, void>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, void>);
+    static_assert(std::same_as<IterTraits::reference, void>);
+  }
+  // Test with an output_iterator that has a non-void value_type
+  {
+    using CommonIter = std::common_iterator<NonVoidOutputIterator, sentinel_wrapper<NonVoidOutputIterator>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(!HasIteratorConcept<IterTraits>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::output_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, void>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, void>);
+    static_assert(std::same_as<IterTraits::reference, void>);
+  }
+  {
+    using Iter = cpp17_input_iterator<int*>;
+    using CommonIter = std::common_iterator<Iter, sentinel_type<int*>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_concept, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, int*>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+  {
+    using Iter = forward_iterator<int*>;
+    using CommonIter = std::common_iterator<Iter, sentinel_type<int*>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::forward_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, int*>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+  {
+    using Iter = random_access_iterator<int*>;
+    using CommonIter = std::common_iterator<Iter, sentinel_type<int*>>;
+    using IterTraits = std::iterator_traits<CommonIter>;
+
+    static_assert(std::same_as<IterTraits::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::same_as<IterTraits::iterator_category, std::forward_iterator_tag>);
+    static_assert(std::same_as<IterTraits::value_type, int>);
+    static_assert(std::same_as<IterTraits::difference_type, std::ptrdiff_t>);
+    static_assert(std::same_as<IterTraits::pointer, int*>);
+    static_assert(std::same_as<IterTraits::reference, int&>);
+  }
+
+  // Testing iterator conformance.
+  {
+    static_assert(std::input_iterator<std::common_iterator<cpp17_input_iterator<int*>, sentinel_type<int*>>>);
+    static_assert(std::forward_iterator<std::common_iterator<forward_iterator<int*>, sentinel_type<int*>>>);
+    static_assert(std::forward_iterator<std::common_iterator<random_access_iterator<int*>, sentinel_type<int*>>>);
+    static_assert(std::forward_iterator<std::common_iterator<contiguous_iterator<int*>, sentinel_type<int*>>>);
+    // Even these are only forward.
+    static_assert(!std::bidirectional_iterator<std::common_iterator<random_access_iterator<int*>, sentinel_type<int*>>>);
+    static_assert(!std::bidirectional_iterator<std::common_iterator<contiguous_iterator<int*>, sentinel_type<int*>>>);
+
+    using Iter = std::common_iterator<forward_iterator<int*>, sentinel_type<int*>>;
+    static_assert(std::indirectly_writable<Iter, int>);
+    static_assert(std::indirectly_swappable<Iter, Iter>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/minus.pass.cpp
new file mode 100644
index 0000000..633d15f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/minus.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<sized_sentinel_for<I> I2, sized_sentinel_for<I> S2>
+//   requires sized_sentinel_for<S, I2>
+// friend iter_difference_t<I2> operator-(
+//   const common_iterator& x, const common_iterator<I2, S2>& y);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+void test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sized_sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sized_sentinel_type<int*>>(sized_sentinel_type<int*>{buffer + 8});
+    assert(commonIter1 - commonSent1 == -8);
+    assert(commonSent1 - commonIter1 == 8);
+    assert(commonIter1 - commonIter1 == 0);
+    assert(commonSent1 - commonSent1 == 0);
+  }
+  {
+    auto iter1 = simple_iterator<int*>(buffer);
+    auto iter2 = comparable_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sized_sentinel_type<int*>>(iter1);
+    auto commonIter2 = std::common_iterator<decltype(iter2), sized_sentinel_type<int*>>(iter2);
+
+    assert(commonIter1 - commonIter2 == 0);
+  }
+  {
+    auto iter1 = random_access_iterator<int*>(buffer);
+    const auto commonIter1 = std::common_iterator<decltype(iter1), sized_sentinel_type<int*>>(iter1);
+    const auto commonSent1 = std::common_iterator<decltype(iter1), sized_sentinel_type<int*>>(sized_sentinel_type<int*>{buffer + 8});
+    assert(commonIter1 - commonSent1 == -8);
+    assert(commonSent1 - commonIter1 == 8);
+    assert(commonIter1 - commonIter1 == 0);
+    assert(commonSent1 - commonSent1 == 0);
+  }
+  {
+    auto iter1 = simple_iterator<int*>(buffer);
+    auto iter2 = comparable_iterator<int*>(buffer);
+    const auto commonIter1 = std::common_iterator<decltype(iter1), sized_sentinel_type<int*>>(iter1);
+    const auto commonIter2 = std::common_iterator<decltype(iter2), sized_sentinel_type<int*>>(iter2);
+
+    assert(commonIter1 - commonIter2 == 0);
+  }
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/plus_plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/plus_plus.pass.cpp
new file mode 100644
index 0000000..dad7ff5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/plus_plus.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// common_iterator& operator++();
+// decltype(auto) operator++(int);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+struct Incomplete;
+
+void test() {
+  // Reference: http://eel.is/c++draft/iterators.common#common.iter.nav-5
+  // Case 2: can-reference
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = simple_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Case 2: can-reference
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = value_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Case 3: postfix-proxy
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = void_plus_plus_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Case 2: where this is not referencable or move constructible
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = value_type_not_move_constructible_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    commonIter1++;
+    ASSERT_SAME_TYPE(decltype(commonIter1++), void);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*commonIter1 == i);
+      commonIter1++;
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Case 2: can-reference
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = cpp17_input_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Case 1: forward_iterator
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = forward_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Case 1: forward_iterator
+  {
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    auto iter1 = random_access_iterator<int*>(buffer);
+    auto commonIter1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(iter1);
+    auto commonSent1 = std::common_iterator<decltype(iter1), sentinel_type<int*>>(sentinel_type<int*>{buffer + 8});
+
+    assert(*(commonIter1++) == 1);
+    assert(*commonIter1 == 2);
+    assert(*(++commonIter1) == 3);
+    assert(*commonIter1 == 3);
+
+    for (auto i = 3; commonIter1 != commonSent1; ++i) {
+      assert(*(commonIter1++) == i);
+    }
+    assert(commonIter1 == commonSent1);
+  }
+
+  // Increment a common_iterator<cpp17_output_iterator>: iter_value_t is not always valid for
+  // output iterators (it isn't for our test cpp17_output_iterator). This is worth testing
+  // because it gets tricky when we define operator++(int).
+  {
+    int buffer[] = {0, 1, 2, 3, 4};
+    using Common = std::common_iterator<cpp17_output_iterator<int*>, sentinel_type<int*>>;
+    auto iter = Common(cpp17_output_iterator<int*>(buffer));
+    auto sent = Common(sentinel_type<int*>{buffer + 5});
+
+    *iter++ = 90;
+    assert(buffer[0] == 90);
+
+    *iter = 91;
+    assert(buffer[1] == 91);
+
+    *++iter = 92;
+    assert(buffer[2] == 92);
+
+    iter++;
+    iter++;
+    assert(iter != sent);
+    iter++;
+    assert(iter == sent);
+  }
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/types.h b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/types.h
new file mode 100644
index 0000000..c51b705
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/iterators.common/types.h
@@ -0,0 +1,266 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_ITERATORS_PREDEF_ITERATORS_ITERATORS_COMMON_TYPES_H
+#define TEST_STD_RANGES_ITERATORS_PREDEF_ITERATORS_ITERATORS_COMMON_TYPES_H
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class>
+class assignable_iterator;
+
+template <class It>
+class simple_iterator
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const simple_iterator& i) {return i.it_;}
+
+    simple_iterator() = default;
+    explicit constexpr simple_iterator(It it) : it_(it) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr simple_iterator& operator++() {++it_; return *this;}
+    constexpr simple_iterator operator++(int)
+        {simple_iterator tmp(*this); ++(*this); return tmp;}
+};
+
+template <class It>
+class value_iterator
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const value_iterator& i) {return i.it_;}
+
+    value_iterator() = default;
+    explicit constexpr value_iterator(It it) : it_(it) {}
+
+    constexpr value_type operator*() const {return std::move(*it_);}
+
+    constexpr value_iterator& operator++() {++it_; return *this;}
+    constexpr value_iterator operator++(int)
+        {value_iterator tmp(*this); ++(*this); return tmp;}
+};
+
+template <class It>
+class void_plus_plus_iterator
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const void_plus_plus_iterator& i) {return i.it_;}
+
+    void_plus_plus_iterator() = default;
+    explicit constexpr void_plus_plus_iterator(It it) : it_(it) {}
+
+    constexpr value_type operator*() const {return std::move(*it_);}
+
+    constexpr void_plus_plus_iterator& operator++() {++it_; return *this;}
+    constexpr void operator++(int) {++(*this);}
+};
+
+// Not referenceable, constructible, and not move constructible.
+template <class It>
+class value_type_not_move_constructible_iterator
+{
+    It it_;
+
+public:
+    template<class T>
+    struct hold {
+      T value_;
+      hold(T v) : value_(v) {}
+      hold(const hold&) = delete;
+      hold(hold&&) = delete;
+    };
+
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      underlying_value_type;
+    typedef hold<underlying_value_type>                        value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const value_type_not_move_constructible_iterator& i) {return i.it_;}
+
+    value_type_not_move_constructible_iterator() = default;
+    explicit constexpr value_type_not_move_constructible_iterator(It it) : it_(it) {}
+
+    constexpr underlying_value_type operator*() const {return std::move(*it_);}
+
+    constexpr value_type_not_move_constructible_iterator& operator++() {++it_; return *this;}
+    constexpr void operator++(int) {++(*this);}
+};
+
+template <class It>
+class comparable_iterator
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const comparable_iterator& i) {return i.it_;}
+
+    comparable_iterator() = default;
+    explicit constexpr comparable_iterator(It it) : it_(it) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr comparable_iterator& operator++() {++it_; return *this;}
+    constexpr comparable_iterator operator++(int)
+        {comparable_iterator tmp(*this); ++(*this); return tmp;}
+
+    friend constexpr bool operator==(const comparable_iterator& lhs, const simple_iterator<It>& rhs) {
+      return base(lhs) == base(rhs);
+    }
+    friend constexpr bool operator==(const simple_iterator<It>& lhs, const comparable_iterator& rhs) {
+      return base(lhs) == base(rhs);
+    }
+
+    friend constexpr auto operator-(const comparable_iterator& lhs, const simple_iterator<It>& rhs) {
+      return base(lhs) - base(rhs);
+    }
+    friend constexpr auto operator-(const simple_iterator<It>& lhs, const comparable_iterator& rhs) {
+      return base(lhs) - base(rhs);
+    }
+};
+
+template<class T>
+struct sentinel_type {
+  T base_;
+
+  template<class U>
+  friend constexpr bool operator==(const sentinel_type& lhs, const U& rhs) { return lhs.base_ == base(rhs); }
+  template<class U>
+  friend constexpr bool operator==(const U& lhs, const sentinel_type& rhs) { return base(lhs) == rhs.base_; }
+};
+
+template<class T>
+struct sized_sentinel_type {
+  T base_;
+
+  template<class U>
+  friend constexpr bool operator==(const sized_sentinel_type& lhs, const U& rhs) { return lhs.base_ - base(rhs); }
+  template<class U>
+  friend constexpr bool operator==(const U& lhs, const sized_sentinel_type& rhs) { return base(lhs) - rhs.base_; }
+  template<class U>
+  friend constexpr auto operator- (const sized_sentinel_type& lhs, const U& rhs) { return lhs.base_ - base(rhs); }
+  template<class U>
+  friend constexpr auto operator- (const U& lhs, const sized_sentinel_type& rhs) { return base(lhs) - rhs.base_; }
+};
+
+template <class It>
+class assignable_iterator
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const assignable_iterator& i) {return i.it_;}
+
+    assignable_iterator() = default;
+    explicit constexpr assignable_iterator(It it) : it_(it) {}
+
+    assignable_iterator(const forward_iterator<It>& it) : it_(base(it)) {}
+    assignable_iterator(const sentinel_type<It>& it) : it_(base(it)) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr assignable_iterator& operator++() {++it_; return *this;}
+    constexpr assignable_iterator operator++(int)
+        {assignable_iterator tmp(*this); ++(*this); return tmp;}
+
+    assignable_iterator& operator=(const forward_iterator<It> &other) {
+      it_ = base(other);
+      return *this;
+    }
+
+    assignable_iterator& operator=(const sentinel_type<It> &other) {
+      it_ = base(other);
+      return *this;
+    }
+};
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template<class T>
+struct sentinel_throws_on_convert {
+  T base_;
+
+  template<class U>
+  friend constexpr bool operator==(const sentinel_throws_on_convert& lhs, const U& rhs) { return lhs.base_ == base(rhs); }
+  template<class U>
+  friend constexpr bool operator==(const U& lhs, const sentinel_throws_on_convert& rhs) { return base(lhs) == rhs.base_; }
+
+  operator sentinel_type<int*>() const { throw 42; }
+};
+
+template <class It>
+class maybe_valueless_iterator
+{
+    It it_;
+
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    friend constexpr It base(const maybe_valueless_iterator& i) {return i.it_;}
+
+    maybe_valueless_iterator() = default;
+    explicit constexpr maybe_valueless_iterator(It it) : it_(it) {}
+
+    maybe_valueless_iterator(const forward_iterator<It>& it) : it_(base(it)) {}
+
+    constexpr reference operator*() const {return *it_;}
+
+    constexpr maybe_valueless_iterator& operator++() {++it_; return *this;}
+    constexpr maybe_valueless_iterator operator++(int)
+        {maybe_valueless_iterator tmp(*this); ++(*this); return tmp;}
+
+    maybe_valueless_iterator& operator=(const forward_iterator<It> &other) {
+      it_ = base(other);
+      return *this;
+    }
+};
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#endif // TEST_STD_RANGES_ITERATORS_PREDEF_ITERATORS_ITERATORS_COMMON_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/iter_move.pass.cpp
new file mode 100644
index 0000000..a9e6d17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/iter_move.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// friend constexpr iter_rvalue_reference_t<Iterator>
+//   iter_move(const move_iterator& i)
+//     noexcept(noexcept(ranges::iter_move(i.current))); // Since C++20
+
+#include <iterator>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+
+int global;
+
+template <bool IsNoexcept>
+struct MaybeNoexceptMove {
+  int x;
+  using value_type = int;
+  using difference_type = ptrdiff_t;
+
+  constexpr friend value_type&& iter_move(MaybeNoexceptMove) noexcept(IsNoexcept) {
+    return std::move(global);
+  }
+
+  int& operator*() const { static int a; return a; }
+
+  MaybeNoexceptMove& operator++();
+  MaybeNoexceptMove operator++(int);
+};
+using ThrowingBase = MaybeNoexceptMove<false>;
+using NoexceptBase = MaybeNoexceptMove<true>;
+static_assert(std::input_iterator<ThrowingBase>);
+ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(std::declval<ThrowingBase>()));
+ASSERT_NOEXCEPT(std::ranges::iter_move(std::declval<NoexceptBase>()));
+
+constexpr bool test() {
+  // Can use `iter_move` with a regular array.
+  {
+    int a[] = {0, 1, 2};
+
+    std::move_iterator<int*> i(a);
+    static_assert(std::same_as<decltype(iter_move(i)), int&&>);
+    assert(iter_move(i) == 0);
+
+    ++i;
+    assert(iter_move(i) == 1);
+  }
+
+  // Check that the `iter_move` customization point is being used.
+  {
+    int a[] = {0, 1, 2};
+
+    int iter_move_invocations = 0;
+    adl::Iterator base = adl::Iterator::TrackMoves(a, iter_move_invocations);
+    std::move_iterator<adl::Iterator> i(base);
+    int x = iter_move(i);
+    assert(x == 0);
+    assert(iter_move_invocations == 1);
+  }
+
+  // Check the `noexcept` specification.
+  {
+    using ThrowingIter = std::move_iterator<ThrowingBase>;
+    ASSERT_NOT_NOEXCEPT(iter_move(std::declval<ThrowingIter>()));
+    using NoexceptIter = std::move_iterator<NoexceptBase>;
+    ASSERT_NOEXCEPT(iter_move(std::declval<NoexceptIter>()));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/iter_swap.pass.cpp
new file mode 100644
index 0000000..075930d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/iter_swap.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// template<indirectly_swappable<Iterator> Iterator2>
+//   friend constexpr void
+//     iter_swap(const move_iterator& x, const move_iterator<Iterator2>& y)
+//       noexcept(noexcept(ranges::iter_swap(x.current, y.current))); // Since C++20
+
+#include <iterator>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <bool IsNoexcept>
+struct MaybeNoexceptSwap {
+  using value_type = int;
+  using difference_type = ptrdiff_t;
+
+  constexpr friend void iter_swap(MaybeNoexceptSwap, MaybeNoexceptSwap) noexcept(IsNoexcept) {
+  }
+
+  int& operator*() const { static int x; return x; }
+
+  MaybeNoexceptSwap& operator++();
+  MaybeNoexceptSwap operator++(int);
+};
+using ThrowingBase = MaybeNoexceptSwap<false>;
+using NoexceptBase = MaybeNoexceptSwap<true>;
+static_assert(std::input_iterator<ThrowingBase>);
+ASSERT_NOT_NOEXCEPT(std::ranges::iter_swap(std::declval<ThrowingBase>(), std::declval<ThrowingBase>()));
+ASSERT_NOEXCEPT(std::ranges::iter_swap(std::declval<NoexceptBase>(), std::declval<NoexceptBase>()));
+
+constexpr bool test() {
+  // Can use `iter_swap` with a regular array.
+  {
+    int a[] = {0, 1, 2};
+
+    std::move_iterator b(a);
+    std::move_iterator e(a + 2);
+    assert(a[0] == 0);
+    assert(a[2] == 2);
+
+    static_assert(std::same_as<decltype(iter_swap(b, e)), void>);
+    iter_swap(b, e);
+    assert(a[0] == 2);
+    assert(a[2] == 0);
+  }
+
+  // Check that the `iter_swap` customization point is being used.
+  {
+    int iter_swap_invocations = 0;
+    adl::Iterator base1 = adl::Iterator::TrackSwaps(iter_swap_invocations);
+    adl::Iterator base2 = adl::Iterator::TrackSwaps(iter_swap_invocations);
+    std::move_iterator<adl::Iterator> i1(base1), i2(base2);
+    iter_swap(i1, i2);
+    assert(iter_swap_invocations == 1);
+
+    iter_swap(i2, i1);
+    assert(iter_swap_invocations == 2);
+  }
+
+  // Check the `noexcept` specification.
+  {
+    using ThrowingIter = std::move_iterator<ThrowingBase>;
+    ASSERT_NOT_NOEXCEPT(iter_swap(std::declval<ThrowingIter>(), std::declval<ThrowingIter>()));
+    using NoexceptIter = std::move_iterator<NoexceptBase>;
+    ASSERT_NOEXCEPT(iter_swap(std::declval<NoexceptIter>(), std::declval<NoexceptIter>()));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/make_move_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/make_move_iterator.pass.cpp
new file mode 100644
index 0000000..1cf0a67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/make_move_iterator.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <InputIterator Iter>
+//   move_iterator<Iter>
+//   make_move_iterator(const Iter& i);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i)
+{
+    const std::move_iterator<It> r(i);
+    assert(std::make_move_iterator(i) == r);
+}
+
+int main(int, char**)
+{
+    {
+    char s[] = "1234567890";
+    test(cpp17_input_iterator<char*>(s+5));
+    test(forward_iterator<char*>(s+5));
+    test(bidirectional_iterator<char*>(s+5));
+    test(random_access_iterator<char*>(s+5));
+    test(s+5);
+    }
+    {
+    int a[] = {1,2,3,4};
+    TEST_IGNORE_NODISCARD std::make_move_iterator(a+4);
+    TEST_IGNORE_NODISCARD std::make_move_iterator(a); // test for LWG issue 2061
+    }
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    constexpr auto iter = std::make_move_iterator<const char *>(p);
+    static_assert(iter.base() == p, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/minus.pass.cpp
new file mode 100644
index 0000000..e3b881e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/minus.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasMinus<Iter1, Iter2>
+//   auto
+//   operator-(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y)
+//   -> decltype(x.base() - y.base());
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It l, It r, typename std::iterator_traits<It>::difference_type x)
+{
+    const std::move_iterator<It> r1(l);
+    const std::move_iterator<It> r2(r);
+    assert(r1 - r2 == x);
+}
+
+int main(int, char**)
+{
+    char s[] = "1234567890";
+    test(random_access_iterator<char*>(s+5), random_access_iterator<char*>(s), 5);
+    test(s+5, s, 5);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p+1);
+    static_assert( it1 - it2 == -1, "");
+    static_assert( it2 - it1 ==  1, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/plus.pass.cpp
new file mode 100644
index 0000000..5e1965e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.nonmember/plus.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <RandomAccessIterator Iter>
+//   move_iterator<Iter>
+//   operator+(Iter::difference_type n, const move_iterator<Iter>& x);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::difference_type n, It x)
+{
+    const std::move_iterator<It> r(i);
+    std::move_iterator<It> rr = n + r;
+    assert(rr.base() == x);
+}
+
+int main(int, char**)
+{
+    char s[] = "1234567890";
+    test(random_access_iterator<char*>(s+5), 5, random_access_iterator<char*>(s+10));
+    test(s+5, 5, s+10);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p + 5);
+    constexpr MI it3 = it1 + 5;
+    static_assert(it1 != it2, "");
+    static_assert(it1 != it3, "");
+    static_assert(it2 == it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.+/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.+/difference_type.pass.cpp
new file mode 100644
index 0000000..1e3244e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.+/difference_type.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// requires RandomAccessIterator<Iter>
+//   move_iterator operator+(difference_type n) const;
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::difference_type n, It x)
+{
+    const std::move_iterator<It> r(i);
+    std::move_iterator<It> rr = r + n;
+    assert(rr.base() == x);
+}
+
+int main(int, char**)
+{
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+    test(s+5, 5, s+10);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p + 5);
+    constexpr MI it3 = it1 + 5;
+    static_assert(it1 != it2, "");
+    static_assert(it1 != it3, "");
+    static_assert(it2 == it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.+=/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.+=/difference_type.pass.cpp
new file mode 100644
index 0000000..863e06c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.+=/difference_type.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// requires RandomAccessIterator<Iter>
+//   move_iterator& operator+=(difference_type n);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::difference_type n, It x)
+{
+    std::move_iterator<It> r(i);
+    std::move_iterator<It>& rr = r += n;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+int main(int, char**)
+{
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+    test(s+5, 5, s+10);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p + 5);
+    constexpr MI it3 = std::make_move_iterator(p) += 5;
+    static_assert(it1 != it2, "");
+    static_assert(it1 != it3, "");
+    static_assert(it2 == it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-/difference_type.pass.cpp
new file mode 100644
index 0000000..3cf76f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-/difference_type.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// requires RandomAccessIterator<Iter>
+//   move_iterator operator-(difference_type n) const;
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::difference_type n, It x)
+{
+    const std::move_iterator<It> r(i);
+    std::move_iterator<It> rr = r - n;
+    assert(rr.base() == x);
+}
+
+int main(int, char**)
+{
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p + 5);
+    constexpr MI it3 = it2 - 5;
+    static_assert(it1 != it2, "");
+    static_assert(it1 == it3, "");
+    static_assert(it2 != it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-/sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-/sentinel.pass.cpp
new file mode 100644
index 0000000..d84a38c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-/sentinel.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_iterator
+
+// template<sized_sentinel_for<Iterator> S>
+//   friend constexpr iter_difference_t<Iterator>
+//     operator-(const move_sentinel<S>& x, const move_iterator& y); // Since C++20
+// template<sized_sentinel_for<Iterator> S>
+//   friend constexpr iter_difference_t<Iterator>
+//     operator-(const move_iterator& x, const move_sentinel<S>& y); // Since C++20
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// The `operator-` calls the underlying iterator and sentinel's `operator-`.
+
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+  constexpr friend difference_type operator-(const CustomIt& a, const CustomIt& b) { return a.p_ - b.p_; }
+  int *p_ = nullptr;
+};
+
+template <class It, class Sent = sized_sentinel<It>>
+constexpr void test_one() {
+  int arr[] = {3, 1, 4};
+
+  const std::move_iterator<It> it_a{It(arr)};
+  const std::move_iterator<It> it_b{It(arr + 1)};
+
+  const std::move_sentinel<Sent> sent_a{Sent(It(arr))};
+  const std::move_sentinel<Sent> sent_b{Sent(It(arr + 1))};
+  const std::move_sentinel<Sent> sent_c{Sent(It(arr + 2))};
+
+  ASSERT_SAME_TYPE(decltype(it_a - sent_a), std::iter_difference_t<It>);
+  ASSERT_SAME_TYPE(decltype(sent_a - it_a), std::iter_difference_t<It>);
+
+  // it_a
+  assert(it_a - sent_a == 0);
+  assert(sent_a - it_a == 0);
+
+  assert(it_a - sent_b == -1);
+  assert(sent_b - it_a == 1);
+
+  assert(it_a - sent_c == -2);
+  assert(sent_c - it_a == 2);
+
+  // it_b
+  assert(it_b - sent_a == 1);
+  assert(sent_a - it_b == -1);
+
+  assert(it_b - sent_b == 0);
+  assert(sent_b - it_b == 0);
+
+  assert(it_b - sent_c == -1);
+  assert(sent_c - it_b == 1);
+}
+
+constexpr bool test() {
+  test_one<CustomIt>();
+  test_one<cpp17_input_iterator<int*>>();
+  test_one<forward_iterator<int*>>();
+  test_one<bidirectional_iterator<int*>>();
+  test_one<random_access_iterator<int*>>();
+  test_one<int*>();
+  test_one<const int*>();
+  test_one<contiguous_iterator<int*>>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-=/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-=/difference_type.pass.cpp
new file mode 100644
index 0000000..5692f70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.-=/difference_type.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// requires RandomAccessIterator<Iter>
+//   move_iterator& operator-=(difference_type n);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::difference_type n, It x)
+{
+    std::move_iterator<It> r(i);
+    std::move_iterator<It>& rr = r -= n;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+int main(int, char**)
+{
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    constexpr auto it1 = std::make_move_iterator(p);
+    constexpr auto it2 = std::make_move_iterator(p+5) -= 5;
+    static_assert(it1 == it2, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_eq.pass.cpp
new file mode 100644
index 0000000..b50299b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_eq.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class Iter1, class Iter2>
+//   bool operator==(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// move_iterator's operator== calls the underlying iterator's operator==
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+  TEST_CONSTEXPR_CXX17 friend bool operator==(const CustomIt& a, const CustomIt& b) { return a.p_ == b.p_; }
+  int *p_ = nullptr;
+};
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test_one()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> r1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r2 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r3 = std::move_iterator<It>(It(a + 2));
+  ASSERT_SAME_TYPE(decltype(r1 == r2), bool);
+  assert( (r1 == r1));
+  assert( (r1 == r2));
+  assert( (r2 == r1));
+  assert(!(r1 == r3));
+  assert(!(r3 == r1));
+}
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  test_one<CustomIt>();
+  test_one<cpp17_input_iterator<int*> >();
+  test_one<forward_iterator<int*> >();
+  test_one<bidirectional_iterator<int*> >();
+  test_one<random_access_iterator<int*> >();
+  test_one<int*>();
+  test_one<const int*>();
+
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+  test_one<three_way_contiguous_iterator<int*>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_gt.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_gt.pass.cpp
new file mode 100644
index 0000000..7e599fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_gt.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class Iter1, class Iter2>
+//   bool operator>(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// move_iterator's operator> calls the underlying iterator's operator>
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+  TEST_CONSTEXPR_CXX17 friend bool operator>(const CustomIt& a, const CustomIt& b) { return a.p_ > b.p_; }
+  int *p_ = nullptr;
+};
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test_one()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> r1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r2 = std::move_iterator<It>(It(a+2));
+  ASSERT_SAME_TYPE(decltype(r1 > r2), bool);
+  assert(!(r1 > r1));
+  assert(!(r1 > r2));
+  assert( (r2 > r1));
+}
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  test_one<CustomIt>();
+  test_one<int*>();
+  test_one<const int*>();
+  test_one<random_access_iterator<int*> >();
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+#endif
+  return true;
+}
+
+int main(int, char**)
+{
+  assert(test());
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_gte.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_gte.pass.cpp
new file mode 100644
index 0000000..04e081d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_gte.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class Iter1, class Iter2>
+//   bool operator>=(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// move_iterator's operator>= calls the underlying iterator's operator>=
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+  TEST_CONSTEXPR_CXX17 friend bool operator>=(const CustomIt& a, const CustomIt& b) { return a.p_ >= b.p_; }
+  int *p_ = nullptr;
+};
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test_one()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> r1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r2 = std::move_iterator<It>(It(a+2));
+  ASSERT_SAME_TYPE(decltype(r1 >= r2), bool);
+  assert( (r1 >= r1));
+  assert(!(r1 >= r2));
+  assert( (r2 >= r1));
+}
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  test_one<CustomIt>();
+  test_one<int*>();
+  test_one<const int*>();
+  test_one<random_access_iterator<int*> >();
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+#endif
+  return true;
+}
+
+int main(int, char**)
+{
+  assert(test());
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_lt.pass.cpp
new file mode 100644
index 0000000..24ccfa6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_lt.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class Iter1, class Iter2>
+//   bool operator<(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// move_iterator's operator< calls the underlying iterator's operator<
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+  TEST_CONSTEXPR_CXX17 friend bool operator<(const CustomIt& a, const CustomIt& b) { return a.p_ < b.p_; }
+  int *p_ = nullptr;
+};
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test_one()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> r1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r2 = std::move_iterator<It>(It(a + 2));
+  ASSERT_SAME_TYPE(decltype(r1 < r2), bool);
+  assert(!(r1 < r1));
+  assert( (r1 < r2));
+  assert(!(r2 < r1));
+}
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  test_one<CustomIt>();
+  test_one<int*>();
+  test_one<const int*>();
+  test_one<random_access_iterator<int*> >();
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+#endif
+  return true;
+}
+
+int main(int, char**)
+{
+  assert(test());
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_lte.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_lte.pass.cpp
new file mode 100644
index 0000000..6de8dae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_lte.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class Iter1, class Iter2>
+//   bool operator<=(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// move_iterator's operator<= calls the underlying iterator's operator<=
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+  TEST_CONSTEXPR_CXX17 friend bool operator<=(const CustomIt& a, const CustomIt& b) { return a.p_ <= b.p_; }
+  int *p_ = nullptr;
+};
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test_one()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> r1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r2 = std::move_iterator<It>(It(a + 2));
+  ASSERT_SAME_TYPE(decltype(r1 <= r2), bool);
+  assert( (r1 <= r1));
+  assert( (r1 <= r2));
+  assert(!(r2 <= r1));
+}
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  test_one<CustomIt>();
+  test_one<int*>();
+  test_one<const int*>();
+  test_one<random_access_iterator<int*> >();
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+#endif
+  return true;
+}
+
+int main(int, char**)
+{
+  assert(test());
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_neq.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_neq.pass.cpp
new file mode 100644
index 0000000..51982ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_neq.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <InputIterator Iter1, InputIterator Iter2>
+//   requires HasEqualTo<Iter1, Iter2>
+//   bool
+//   operator!=(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// In C++17, move_iterator's operator!= calls the underlying iterator's operator!=
+// In C++20, move_iterator's operator== calls the underlying iterator's operator==
+struct CustomIt {
+  using value_type = int;
+  using difference_type = int;
+  using reference = int&;
+  using pointer = int*;
+  using iterator_category = std::input_iterator_tag;
+  CustomIt() = default;
+  TEST_CONSTEXPR_CXX17 explicit CustomIt(int* p) : p_(p) {}
+  int& operator*() const;
+  CustomIt& operator++();
+  CustomIt operator++(int);
+#if TEST_STD_VER > 17
+  friend constexpr bool operator==(const CustomIt& a, const CustomIt& b) { return a.p_ == b.p_; }
+  friend bool operator!=(const CustomIt& a, const CustomIt& b) = delete;
+#else
+  friend TEST_CONSTEXPR_CXX17 bool operator!=(const CustomIt& a, const CustomIt& b) { return a.p_ != b.p_; }
+#endif
+  int *p_ = nullptr;
+};
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test_one()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> r1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r2 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> r3 = std::move_iterator<It>(It(a + 2));
+  ASSERT_SAME_TYPE(decltype(r1 != r2), bool);
+  assert(!(r1 != r1));
+  assert(!(r1 != r2));
+  assert(!(r2 != r1));
+  assert( (r1 != r3));
+  assert( (r3 != r1));
+}
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  test_one<CustomIt>();
+  test_one<cpp17_input_iterator<int*> >();
+  test_one<forward_iterator<int*> >();
+  test_one<bidirectional_iterator<int*> >();
+  test_one<random_access_iterator<int*> >();
+  test_one<int*>();
+  test_one<const int*>();
+
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+  test_one<three_way_contiguous_iterator<int*>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_spaceship.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_spaceship.pass.cpp
new file mode 100644
index 0000000..dc9238a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.comp/op_spaceship.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-concepts
+
+// <iterator>
+
+// move_iterator
+
+// template <class Iter1, three_way_comparable_with<Iter1> Iter2>
+//   constexpr auto operator<=>(const move_iterator<Iter1>& x, const move_iterator<Iter2>& y)
+//     -> compare_three_way_result_t<Iter1, Iter2>;
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+
+template<class T, class U> concept HasEquals = requires (T t, U u) { t == u; };
+template<class T, class U> concept HasSpaceship = requires (T t, U u) { t <=> u; };
+
+static_assert(!HasSpaceship<std::move_iterator<int*>, std::move_iterator<char*>>);
+static_assert( HasSpaceship<std::move_iterator<int*>, std::move_iterator<int*>>);
+static_assert( HasSpaceship<std::move_iterator<int*>, std::move_iterator<const int*>>);
+static_assert( HasSpaceship<std::move_iterator<const int*>, std::move_iterator<const int*>>);
+static_assert(!HasSpaceship<std::move_iterator<forward_iterator<int*>>, std::move_iterator<forward_iterator<int*>>>);
+static_assert(!HasSpaceship<std::move_iterator<random_access_iterator<int*>>, std::move_iterator<random_access_iterator<int*>>>);
+static_assert(!HasSpaceship<std::move_iterator<contiguous_iterator<int*>>, std::move_iterator<contiguous_iterator<int*>>>);
+static_assert( HasSpaceship<std::move_iterator<three_way_contiguous_iterator<int*>>, std::move_iterator<three_way_contiguous_iterator<int*>>>);
+
+static_assert(!HasSpaceship<std::move_iterator<int*>, std::move_sentinel<int*>>);
+static_assert(!HasSpaceship<std::move_iterator<three_way_contiguous_iterator<int*>>, std::move_sentinel<three_way_contiguous_iterator<int*>>>);
+
+void test_spaceshippable_but_not_three_way_comparable() {
+  struct A {
+    using value_type = int;
+    using difference_type = int;
+    int& operator*() const;
+    A& operator++();
+    A operator++(int);
+    std::strong_ordering operator<=>(const A&) const;
+  };
+  struct B {
+    using value_type = int;
+    using difference_type = int;
+    int& operator*() const;
+    B& operator++();
+    B operator++(int);
+    std::strong_ordering operator<=>(const B&) const;
+    bool operator==(const A&) const;
+    std::strong_ordering operator<=>(const A&) const;
+  };
+  static_assert( std::input_iterator<A>);
+  static_assert( std::input_iterator<B>);
+  static_assert( HasEquals<A, B>);
+  static_assert( HasSpaceship<A, B>);
+  static_assert(!std::three_way_comparable_with<A, B>);
+  static_assert( HasEquals<std::move_iterator<A>, std::move_iterator<B>>);
+  static_assert(!HasSpaceship<std::move_iterator<A>, std::move_iterator<B>>);
+}
+
+template <class It, class Jt>
+constexpr void test_two()
+{
+  int a[] = {3, 1, 4};
+  const std::move_iterator<It> i1 = std::move_iterator<It>(It(a));
+  const std::move_iterator<It> i2 = std::move_iterator<It>(It(a + 2));
+  const std::move_iterator<Jt> j1 = std::move_iterator<Jt>(Jt(a));
+  const std::move_iterator<Jt> j2 = std::move_iterator<Jt>(Jt(a + 2));
+  ASSERT_SAME_TYPE(decltype(i1 <=> i2), std::strong_ordering);
+  assert((i1 <=> i1) == std::strong_ordering::equal);
+  assert((i1 <=> i2) == std::strong_ordering::less);
+  assert((i2 <=> i1) == std::strong_ordering::greater);
+  ASSERT_SAME_TYPE(decltype(i1 <=> j2), std::strong_ordering);
+  assert((i1 <=> j1) == std::strong_ordering::equal);
+  assert((i1 <=> j2) == std::strong_ordering::less);
+  assert((i2 <=> j1) == std::strong_ordering::greater);
+}
+
+constexpr bool test()
+{
+  test_two<int*, int*>();
+  test_two<int*, const int*>();
+  test_two<const int*, int*>();
+  test_two<const int*, const int*>();
+  test_two<three_way_contiguous_iterator<int*>, three_way_contiguous_iterator<int*>>();
+  return true;
+}
+
+int main(int, char**)
+{
+  assert(test());
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/convert.pass.cpp
new file mode 100644
index 0000000..460aaad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/convert.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class U>
+//   requires HasConstructor<Iter, const U&>
+//   move_iterator(const move_iterator<U> &u);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It, class U>
+void
+test(U u)
+{
+    const std::move_iterator<U> r2(u);
+    std::move_iterator<It> r1 = r2;
+    assert(base(r1.base()) == base(u));
+}
+
+struct Base {};
+struct Derived : Base {};
+
+int main(int, char**)
+{
+    Derived d;
+
+    test<cpp17_input_iterator<Base*> >(cpp17_input_iterator<Derived*>(&d));
+    test<forward_iterator<Base*> >(forward_iterator<Derived*>(&d));
+    test<bidirectional_iterator<Base*> >(bidirectional_iterator<Derived*>(&d));
+    test<random_access_iterator<const Base*> >(random_access_iterator<Derived*>(&d));
+    test<Base*>(&d);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const Derived *p = nullptr;
+    constexpr std::move_iterator<const Derived *>     it1 = std::make_move_iterator(p);
+    constexpr std::move_iterator<const Base *>        it2(it1);
+    static_assert(it2.base() == p);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/ctor.convert.LWG3435.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/ctor.convert.LWG3435.verify.cpp
new file mode 100644
index 0000000..7ef5655
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/ctor.convert.LWG3435.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class U>
+//  requires !same_as<U, Iter> && convertible_to<const U&, Iter>
+// move_iterator(const move_iterator<U> &u);
+
+#include <iterator>
+
+struct Base { };
+struct Derived : Base { };
+
+void test() {
+    std::move_iterator<Base*> base;
+    std::move_iterator<Derived*> derived(base); // expected-error {{no matching constructor for initialization of 'std::move_iterator<Derived *>'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/ctor.iter.explicit.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/ctor.iter.explicit.verify.cpp
new file mode 100644
index 0000000..b141115
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/ctor.iter.explicit.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// explicit move_iterator(Iter );
+
+// test explicitness
+
+#include <iterator>
+
+int main(int, char**) {
+    char const* it = "";
+    std::move_iterator<char const*> r = it; // expected-error{{no viable conversion from 'const char *' to 'std::move_iterator<const char *>'}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/default.pass.cpp
new file mode 100644
index 0000000..d095182
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/default.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// move_iterator();
+//
+//  constexpr in C++17
+//
+//  requires the underlying iterator to be default-constructible (extension).
+
+#include <iterator>
+
+#include <type_traits>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+struct NoDefaultCtr : forward_iterator<int*> {
+  NoDefaultCtr() = delete;
+};
+
+LIBCPP_STATIC_ASSERT( std::is_default_constructible_v<std::move_iterator<forward_iterator<int*>>>);
+LIBCPP_STATIC_ASSERT(!std::is_default_constructible_v<std::move_iterator<NoDefaultCtr>>);
+#endif
+
+template <class It>
+void test() {
+    std::move_iterator<It> r;
+    (void)r;
+}
+
+int main(int, char**) {
+  // we don't have a test iterator that is both input and default-constructible, so not testing that case
+  test<forward_iterator<char*> >();
+  test<bidirectional_iterator<char*> >();
+  test<random_access_iterator<char*> >();
+  test<char*>();
+
+#if TEST_STD_VER > 14
+  {
+    constexpr std::move_iterator<const char *> it;
+    (void)it;
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/iter.pass.cpp
new file mode 100644
index 0000000..f7830f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.const/iter.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// explicit move_iterator(Iter i);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 bool test()
+{
+  static_assert( std::is_constructible<std::move_iterator<It>, const It&>::value, "");
+  static_assert( std::is_constructible<std::move_iterator<It>, It&&>::value, "");
+  static_assert(!std::is_convertible<const It&, std::move_iterator<It> >::value, "");
+  static_assert(!std::is_convertible<It&&, std::move_iterator<It> >::value, "");
+
+  char s[] = "123";
+  {
+    It it = It(s);
+    std::move_iterator<It> r(it);
+    assert(base(r.base()) == s);
+  }
+  {
+    It it = It(s);
+    std::move_iterator<It> r(std::move(it));
+    assert(base(r.base()) == s);
+  }
+  return true;
+}
+
+template <class It>
+TEST_CONSTEXPR_CXX17 bool test_moveonly()
+{
+  static_assert(!std::is_constructible<std::move_iterator<It>, const It&>::value, "");
+  static_assert( std::is_constructible<std::move_iterator<It>, It&&>::value, "");
+  static_assert(!std::is_convertible<const It&, std::move_iterator<It> >::value, "");
+  static_assert(!std::is_convertible<It&&, std::move_iterator<It> >::value, "");
+
+  char s[] = "123";
+  {
+    It it = It(s);
+    std::move_iterator<It> r(std::move(it));
+    assert(base(r.base()) == s);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test<cpp17_input_iterator<char*> >();
+  test<forward_iterator<char*> >();
+  test<bidirectional_iterator<char*> >();
+  test<random_access_iterator<char*> >();
+  test<char*>();
+  test<const char*>();
+
+#if TEST_STD_VER > 14
+  static_assert(test<cpp17_input_iterator<char*>>());
+  static_assert(test<forward_iterator<char*>>());
+  static_assert(test<bidirectional_iterator<char*>>());
+  static_assert(test<random_access_iterator<char*>>());
+  static_assert(test<char*>());
+  static_assert(test<const char*>());
+#endif
+
+#if TEST_STD_VER > 17
+  test<contiguous_iterator<char*>>();
+  test_moveonly<cpp20_input_iterator<char*>>();
+  static_assert(test<contiguous_iterator<char*>>());
+  static_assert(test_moveonly<cpp20_input_iterator<char*>>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.conv/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.conv/base.pass.cpp
new file mode 100644
index 0000000..6e348b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.conv/base.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+//
+// constexpr iterator_type base() const; // Until C++20
+// constexpr const Iterator& base() const & noexcept; // From C++20
+// constexpr Iterator base() &&; // From C++20
+
+#include <iterator>
+
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+
+struct MoveOnlyIterator {
+  using It = int*;
+
+  It it_;
+
+  using iterator_category = std::input_iterator_tag;
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using reference = int&;
+
+  TEST_CONSTEXPR explicit MoveOnlyIterator(It it) : it_(it) {}
+  MoveOnlyIterator(MoveOnlyIterator&&) = default;
+  MoveOnlyIterator& operator=(MoveOnlyIterator&&) = default;
+  MoveOnlyIterator(const MoveOnlyIterator&) = delete;
+  MoveOnlyIterator& operator=(const MoveOnlyIterator&) = delete;
+
+  TEST_CONSTEXPR reference operator*() const { return *it_; }
+
+  TEST_CONSTEXPR_CXX14 MoveOnlyIterator& operator++() { ++it_; return *this; }
+  TEST_CONSTEXPR_CXX14 MoveOnlyIterator operator++(int) { return MoveOnlyIterator(it_++); }
+
+  friend TEST_CONSTEXPR bool operator==(const MoveOnlyIterator& x, const MoveOnlyIterator& y) {return x.it_ == y.it_;}
+  friend TEST_CONSTEXPR bool operator!=(const MoveOnlyIterator& x, const MoveOnlyIterator& y) {return x.it_ != y.it_;}
+
+  friend TEST_CONSTEXPR It base(const MoveOnlyIterator& i) { return i.it_; }
+};
+
+#if TEST_STD_VER > 17
+static_assert( std::input_iterator<MoveOnlyIterator>);
+#endif
+static_assert(!std::is_copy_constructible<MoveOnlyIterator>::value, "");
+
+template <class It>
+TEST_CONSTEXPR_CXX14 void test_one() {
+  // Non-const lvalue.
+  {
+    int a[] = {1, 2, 3};
+
+    auto i = std::move_iterator<It>(It(a));
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(decltype(i.base()), const It&);
+    ASSERT_NOEXCEPT(i.base());
+#else
+    ASSERT_SAME_TYPE(decltype(i.base()), It);
+#endif
+    assert(i.base() == It(a));
+
+    ++i;
+    assert(i.base() == It(a + 1));
+  }
+
+  // Const lvalue.
+  {
+    int a[] = {1, 2, 3};
+
+    const auto i = std::move_iterator<It>(It(a));
+#if TEST_STD_VER > 17
+    ASSERT_SAME_TYPE(decltype(i.base()), const It&);
+    ASSERT_NOEXCEPT(i.base());
+#else
+    ASSERT_SAME_TYPE(decltype(i.base()), It);
+#endif
+    assert(i.base() == It(a));
+  }
+
+  // Rvalue.
+  {
+    int a[] = {1, 2, 3};
+
+    auto i = std::move_iterator<It>(It(a));
+    ASSERT_SAME_TYPE(decltype(std::move(i).base()), It);
+    assert(std::move(i).base() == It(a));
+  }
+}
+
+TEST_CONSTEXPR_CXX14 bool test() {
+  test_one<cpp17_input_iterator<int*> >();
+  test_one<forward_iterator<int*> >();
+  test_one<bidirectional_iterator<int*> >();
+  test_one<random_access_iterator<int*> >();
+  test_one<int*>();
+  test_one<const int*>();
+#if TEST_STD_VER > 17
+  test_one<contiguous_iterator<int*>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 14
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.decr/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.decr/post.pass.cpp
new file mode 100644
index 0000000..38d5232
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.decr/post.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// move_iterator operator--(int);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, It x)
+{
+    std::move_iterator<It> r(i);
+    std::move_iterator<It> rr = r--;
+    assert(r.base() == x);
+    assert(rr.base() == i);
+}
+
+int main(int, char**)
+{
+    char s[] = "123";
+    test(bidirectional_iterator<char*>(s+1), bidirectional_iterator<char*>(s));
+    test(random_access_iterator<char*>(s+1), random_access_iterator<char*>(s));
+    test(s+1, s);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p+1);
+    static_assert(it1 != it2, "");
+    constexpr MI it3 = std::make_move_iterator(p+1) --;
+    static_assert(it1 != it3, "");
+    static_assert(it2 == it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.decr/pre.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.decr/pre.pass.cpp
new file mode 100644
index 0000000..e98fb6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.decr/pre.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// move_iterator& operator--();
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, It x)
+{
+    std::move_iterator<It> r(i);
+    std::move_iterator<It>& rr = --r;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+int main(int, char**)
+{
+    char s[] = "123";
+    test(bidirectional_iterator<char*>(s+1), bidirectional_iterator<char*>(s));
+    test(random_access_iterator<char*>(s+1), random_access_iterator<char*>(s));
+    test(s+1, s);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p+1);
+    static_assert(it1 != it2, "");
+    constexpr MI it3 = -- std::make_move_iterator(p+1);
+    static_assert(it1 == it3, "");
+    static_assert(it2 != it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.incr/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.incr/post.pass.cpp
new file mode 100644
index 0000000..e2b831b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.incr/post.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// constexpr auto operator++(int); // Return type was move_iterator until C++20
+
+#include <iterator>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+template <class It>
+void test_single_pass(It i, It x) {
+  std::move_iterator<It> r(std::move(i));
+  r++;
+  assert(std::move(r).base() == x);
+}
+#endif
+
+template <class It>
+void test(It i, It x) {
+    std::move_iterator<It> r(i);
+    std::move_iterator<It> rr = r++;
+    assert(r.base() == x);
+    assert(rr.base() == i);
+}
+
+int main(int, char**) {
+  char s[] = "123";
+#if TEST_STD_VER > 17
+  test_single_pass(cpp17_input_iterator<char*>(s), cpp17_input_iterator<char*>(s + 1));
+#else
+  test(cpp17_input_iterator<char*>(s), cpp17_input_iterator<char*>(s+1));
+#endif
+  test(forward_iterator<char*>(s), forward_iterator<char*>(s+1));
+  test(bidirectional_iterator<char*>(s), bidirectional_iterator<char*>(s+1));
+  test(random_access_iterator<char*>(s), random_access_iterator<char*>(s+1));
+  test(s, s+1);
+
+#if TEST_STD_VER > 14
+  {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p+1);
+    static_assert(it1 != it2, "");
+    constexpr MI it3 = std::make_move_iterator(p) ++;
+    static_assert(it1 == it3, "");
+    static_assert(it2 != it3, "");
+  }
+#endif
+
+#if TEST_STD_VER > 17
+  // Forward iterators return a copy.
+  {
+    int a[] = {1, 2, 3};
+    using MoveIter = std::move_iterator<forward_iterator<int*>>;
+
+    MoveIter i = MoveIter(forward_iterator<int*>(a));
+    ASSERT_SAME_TYPE(decltype(i++), MoveIter);
+    auto j = i++;
+    assert(base(j.base()) == a);
+    assert(base(i.base()) == a + 1);
+  }
+
+  // Non-forward iterators return void.
+  {
+    int a[] = {1, 2, 3};
+    using MoveIter = std::move_iterator<cpp20_input_iterator<int*>>;
+
+    MoveIter i = MoveIter(cpp20_input_iterator<int*>(a));
+    ASSERT_SAME_TYPE(decltype(i++), void);
+    i++;
+    assert(base(i.base()) == a + 1);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.incr/pre.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.incr/pre.pass.cpp
new file mode 100644
index 0000000..7c93cf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.incr/pre.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// move_iterator& operator++();
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, It x)
+{
+    std::move_iterator<It> r(i);
+    std::move_iterator<It>& rr = ++r;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+int main(int, char**)
+{
+    char s[] = "123";
+    test(cpp17_input_iterator<char*>(s), cpp17_input_iterator<char*>(s+1));
+    test(forward_iterator<char*>(s), forward_iterator<char*>(s+1));
+    test(bidirectional_iterator<char*>(s), bidirectional_iterator<char*>(s+1));
+    test(random_access_iterator<char*>(s), random_access_iterator<char*>(s+1));
+    test(s, s+1);
+
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p+1);
+    static_assert(it1 != it2, "");
+    constexpr MI it3 = ++ std::make_move_iterator(p);
+    static_assert(it1 != it3, "");
+    static_assert(it2 == it3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.index/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.index/difference_type.pass.cpp
new file mode 100644
index 0000000..df19987
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.index/difference_type.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// constexpr reference operator[](difference_type n) const; // Return type unspecified until C++20
+
+#include <iterator>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::difference_type n,
+     typename std::iterator_traits<It>::value_type x)
+{
+    typedef typename std::iterator_traits<It>::value_type value_type;
+    const std::move_iterator<It> r(i);
+    value_type rr = r[n];
+    assert(rr == x);
+}
+
+struct do_nothing
+{
+    void operator()(void*) const {}
+};
+
+int main(int, char**)
+{
+    {
+        char s[] = "1234567890";
+        test(random_access_iterator<char*>(s+5), 4, '0');
+        test(s+5, 4, '0');
+    }
+#if TEST_STD_VER >= 11
+    {
+        int i[5];
+        typedef std::unique_ptr<int, do_nothing> Ptr;
+        Ptr p[5];
+        for (unsigned j = 0; j < 5; ++j)
+            p[j].reset(i+j);
+        test(p, 3, Ptr(i+3));
+    }
+#endif
+#if TEST_STD_VER > 14
+    {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    static_assert(it1[0] == '1', "");
+    static_assert(it1[5] == '6', "");
+    }
+#endif
+
+#if TEST_STD_VER > 17
+  // Ensure the `iter_move` customization point is being used.
+  {
+    int a[] = {0, 1, 2};
+
+    int iter_moves = 0;
+    adl::Iterator i = adl::Iterator::TrackMoves(a, iter_moves);
+    std::move_iterator<adl::Iterator> mi(i);
+
+    auto x = mi[0];
+    assert(x == 0);
+    assert(iter_moves == 1);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.ref/deprecated.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.ref/deprecated.verify.cpp
new file mode 100644
index 0000000..8c1684f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.ref/deprecated.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// move_iterator
+
+#include <iterator>
+
+int main(int, char**) {
+  (void)std::move_iterator<int*>().operator->();
+  // expected-warning@-1{{'operator->' is deprecated}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.ref/op_arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.ref/op_arrow.pass.cpp
new file mode 100644
index 0000000..cbb4a16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.ref/op_arrow.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <iterator>
+
+// move_iterator
+
+// pointer operator->() const;
+//
+//  constexpr in C++17
+//  deprecated in C++20
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX17 bool test()
+{
+    char a[] = "123456789";
+    std::move_iterator<char *> it1 = std::make_move_iterator(a);
+    std::move_iterator<char *> it2 = std::make_move_iterator(a + 1);
+    assert(it1.operator->() == a);
+    assert(it2.operator->() == a + 1);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 14
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.star/op_star.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.star/op_star.pass.cpp
new file mode 100644
index 0000000..22f601e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op.star/op_star.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// reference operator*() const;
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+#include <memory>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    A() : data_(1) {}
+    ~A() {data_ = -1;}
+
+    friend bool operator==(const A& x, const A& y)
+        {return x.data_ == y.data_;}
+};
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::value_type x)
+{
+    std::move_iterator<It> r(i);
+    assert(*r == x);
+    typename std::iterator_traits<It>::value_type x2 = *r;
+    assert(x2 == x);
+}
+
+struct do_nothing
+{
+    void operator()(void*) const {}
+};
+
+
+int main(int, char**) {
+  {
+    A a;
+    test(&a, A());
+  }
+#if TEST_STD_VER >= 11
+  {
+    int i;
+    std::unique_ptr<int, do_nothing> p(&i);
+    test(&p, std::unique_ptr<int, do_nothing>(&i));
+  }
+#endif
+#if TEST_STD_VER > 14
+  {
+    constexpr const char *p = "123456789";
+    typedef std::move_iterator<const char *> MI;
+    constexpr MI it1 = std::make_move_iterator(p);
+    constexpr MI it2 = std::make_move_iterator(p+1);
+    static_assert(*it1 == p[0], "");
+    static_assert(*it2 == p[1], "");
+  }
+#endif
+
+#if TEST_STD_VER > 17
+  // Ensure the `iter_move` customization point is being used.
+  {
+    int a[] = {0, 1, 2};
+
+    int iter_moves = 0;
+    adl::Iterator i = adl::Iterator::TrackMoves(a, iter_moves);
+    std::move_iterator<adl::Iterator> mi(i);
+
+    auto x = *mi;
+    assert(x == 0);
+    assert(iter_moves == 1);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op=/assign.LWG3435.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op=/assign.LWG3435.verify.cpp
new file mode 100644
index 0000000..2bdfadf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op=/assign.LWG3435.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class U>
+//  requires !same_as<U, Iter> && convertible_to<const U&, Iter> && assignable_from<Iter&, const U&>
+// move_iterator& operator=(const move_iterator<U>& u);
+
+#include <iterator>
+
+struct Base { };
+struct Derived : Base { };
+
+void test() {
+    std::move_iterator<Base*> base;
+    std::move_iterator<Derived*> derived;
+    derived = base; // expected-error {{no viable overloaded '='}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op=/move_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op=/move_iterator.pass.cpp
new file mode 100644
index 0000000..d4857d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.ops/move.iter.op=/move_iterator.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// template <class U>
+//   requires HasAssign<Iter, const U&>
+//   move_iterator&
+//   operator=(const move_iterator<U>& u);
+//
+//  constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It, class U>
+void
+test(U u)
+{
+    const std::move_iterator<U> r2(u);
+    std::move_iterator<It> r1(It(nullptr));
+    std::move_iterator<It>& rr = (r1 = r2);
+    assert(base(r1.base()) == base(u));
+    assert(&rr == &r1);
+}
+
+struct Base {};
+struct Derived : Base {};
+
+struct ToIter {
+    typedef std::forward_iterator_tag iterator_category;
+    typedef char *pointer;
+    typedef char &reference;
+    typedef char value_type;
+    typedef signed char difference_type;
+
+    explicit TEST_CONSTEXPR_CXX17 ToIter() : m_value(0) {}
+    TEST_CONSTEXPR_CXX17 ToIter(const ToIter &src) : m_value(src.m_value) {}
+    // Intentionally not defined, must not be called.
+    ToIter(char *src);
+    TEST_CONSTEXPR_CXX17 ToIter &operator=(char *src) {
+        m_value = src;
+        return *this;
+    }
+    TEST_CONSTEXPR_CXX17 ToIter &operator=(const ToIter &src) {
+        m_value = src.m_value;
+        return *this;
+    }
+    char *m_value;
+
+    reference operator*() const;
+};
+
+TEST_CONSTEXPR_CXX17 bool test_conv_assign()
+{
+    char c = '\0';
+    char *fi = &c;
+    const std::move_iterator<char *> move_fi(fi);
+    std::move_iterator<ToIter> move_ti;
+    move_ti = move_fi;
+    assert(move_ti.base().m_value == fi);
+    return true;
+}
+
+int main(int, char**)
+{
+    Derived d;
+
+    test<cpp17_input_iterator<Base*> >(cpp17_input_iterator<Derived*>(&d));
+    test<forward_iterator<Base*> >(forward_iterator<Derived*>(&d));
+    test<bidirectional_iterator<Base*> >(bidirectional_iterator<Derived*>(&d));
+    test<random_access_iterator<const Base*> >(random_access_iterator<Derived*>(&d));
+    test<Base*>(&d);
+    test_conv_assign();
+#if TEST_STD_VER > 14
+    {
+    using BaseIter    = std::move_iterator<const Base *>;
+    using DerivedIter = std::move_iterator<const Derived *>;
+    constexpr const Derived *p = nullptr;
+    constexpr DerivedIter     it1 = std::make_move_iterator(p);
+    constexpr BaseIter        it2 = (BaseIter{nullptr} = it1);
+    static_assert(it2.base() == p, "");
+    static_assert(test_conv_assign(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iter.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..e574446
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/implicit_ctad.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <iterator>
+
+// move_iterator
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  int* it = nullptr;
+  std::move_iterator move_it(it);
+  ASSERT_SAME_TYPE(decltype(move_it), std::move_iterator<int*>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..844da40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// move_iterator
+
+#include <iterator>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+void test()
+{
+  {
+    using iterator = std::move_iterator<cpp17_input_iterator<int*>>;
+
+    LIBCPP_STATIC_ASSERT(!std::default_initializable<iterator>);
+    static_assert( std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert(!std::sentinel_for<iterator, iterator>); // not copyable
+    static_assert(!std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+  {
+    using iterator = std::move_iterator<cpp20_input_iterator<int*>>;
+
+    LIBCPP_STATIC_ASSERT(!std::default_initializable<iterator>);
+    static_assert(!std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert(!std::sentinel_for<iterator, iterator>); // not copyable
+    static_assert(!std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+  {
+    using iterator = std::move_iterator<forward_iterator<int*>>;
+
+    static_assert( std::default_initializable<iterator>);
+    static_assert( std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert( std::sentinel_for<iterator, iterator>);
+    static_assert(!std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+  {
+    using iterator = std::move_iterator<bidirectional_iterator<int*>>;
+
+    static_assert( std::default_initializable<iterator>);
+    static_assert( std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert( std::sentinel_for<iterator, iterator>);
+    static_assert(!std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+  {
+    using iterator = std::move_iterator<random_access_iterator<int*>>;
+
+    static_assert( std::default_initializable<iterator>);
+    static_assert( std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert( std::sentinel_for<iterator, iterator>);
+    static_assert( std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+  {
+    using iterator = std::move_iterator<contiguous_iterator<int*>>;
+
+    static_assert( std::default_initializable<iterator>);
+    static_assert( std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert( std::sentinel_for<iterator, iterator>);
+    static_assert( std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+  {
+    using iterator = std::move_iterator<int*>;
+
+    static_assert( std::default_initializable<iterator>);
+    static_assert( std::copyable<iterator>);
+    static_assert( std::input_iterator<iterator>);
+    static_assert(!std::forward_iterator<iterator>);
+    static_assert( std::sentinel_for<iterator, iterator>);
+    static_assert( std::sized_sentinel_for<iterator, iterator>);
+    static_assert(!std::indirectly_movable<int*, iterator>);
+    static_assert(!std::indirectly_movable_storable<int*, iterator>);
+    static_assert(!std::indirectly_copyable<int*, iterator>);
+    static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+    static_assert( std::indirectly_readable<iterator>);
+    static_assert(!std::indirectly_writable<iterator, int>);
+    static_assert( std::indirectly_swappable<iterator, iterator>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/types.pass.cpp
new file mode 100644
index 0000000..5676564
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.iterator/types.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// move_iterator
+
+// Test nested types:
+
+// template <InputIterator Iter>
+// class move_iterator {
+// public:
+//  using iterator_type     = Iterator;
+//  using iterator_concept  = input_iterator_tag; // From C++20
+//  using iterator_category = see below; // not always present starting from C++20
+//  using value_type        = iter_value_t<Iterator>; // Until C++20, iterator_traits<Iterator>::value_type
+//  using difference_type   = iter_difference_t<Iterator>; // Until C++20, iterator_traits<Iterator>::difference_type;
+//  using pointer           = Iterator;
+//  using reference         = iter_rvalue_reference_t<Iterator>; // Until C++20, value_type&&
+// };
+
+#include <functional>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct FooIter {
+  using iterator_category = std::bidirectional_iterator_tag;
+  using value_type = void*;
+  using difference_type = void*;
+  using pointer = void*;
+  using reference = char&;
+  bool& operator*() const;
+};
+
+#if TEST_STD_VER > 17
+template <>
+struct std::indirectly_readable_traits<FooIter> {
+  using value_type = int;
+};
+template <>
+struct std::incrementable_traits<FooIter> {
+  using difference_type = char;
+};
+#endif
+
+#if TEST_STD_VER > 17
+// Not using `FooIter::value_type`.
+static_assert(std::is_same_v<typename std::move_iterator<FooIter>::value_type, int>);
+// Not using `FooIter::difference_type`.
+static_assert(std::is_same_v<typename std::move_iterator<FooIter>::difference_type, char>);
+static_assert(std::is_same_v<typename std::reverse_iterator<FooIter>::reference, bool&>);
+
+#else
+static_assert(std::is_same<typename std::reverse_iterator<FooIter>::reference, char&>::value, "");
+#endif
+
+template <class ValueType, class Reference>
+struct DummyIt {
+  typedef std::forward_iterator_tag iterator_category;
+  typedef ValueType value_type;
+  typedef std::ptrdiff_t difference_type;
+  typedef ValueType* pointer;
+  typedef Reference reference;
+
+  Reference operator*() const;
+};
+
+template <class It>
+void test() {
+  typedef std::move_iterator<It> R;
+  typedef std::iterator_traits<It> T;
+  static_assert((std::is_same<typename R::iterator_type, It>::value), "");
+  static_assert((std::is_same<typename R::difference_type, typename T::difference_type>::value), "");
+  static_assert((std::is_same<typename R::pointer, It>::value), "");
+  static_assert((std::is_same<typename R::value_type, typename T::value_type>::value), "");
+
+#if TEST_STD_VER > 17
+  static_assert((std::is_same_v<typename R::reference, std::iter_rvalue_reference_t<It>>), "");
+#else
+  static_assert((std::is_same<typename R::reference, typename R::value_type&&>::value), "");
+#endif
+
+#if TEST_STD_VER > 17
+  if constexpr (std::is_same_v<typename T::iterator_category, std::contiguous_iterator_tag>) {
+    static_assert((std::is_same<typename R::iterator_category, std::random_access_iterator_tag>::value), "");
+  } else {
+    static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
+  }
+#else
+  static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
+#endif
+
+#if TEST_STD_VER > 17
+  static_assert(std::is_same_v<typename R::iterator_concept, std::input_iterator_tag>);
+#endif
+}
+
+int main(int, char**) {
+  test<cpp17_input_iterator<char*> >();
+  test<forward_iterator<char*> >();
+  test<bidirectional_iterator<char*> >();
+  test<random_access_iterator<char*> >();
+  test<char*>();
+
+#if TEST_STD_VER >= 11
+  {
+      typedef DummyIt<int, int> T;
+      typedef std::move_iterator<T> It;
+      static_assert(std::is_same<It::reference, int>::value, "");
+  }
+  {
+      typedef DummyIt<int, std::reference_wrapper<int> > T;
+      typedef std::move_iterator<T> It;
+      static_assert(std::is_same<It::reference, std::reference_wrapper<int> >::value, "");
+  }
+  {
+      // Check that move_iterator uses whatever reference type it's given
+      // when it's not a reference.
+      typedef DummyIt<int, long > T;
+      typedef std::move_iterator<T> It;
+      static_assert(std::is_same<It::reference, long>::value, "");
+  }
+  {
+      typedef DummyIt<int, int&> T;
+      typedef std::move_iterator<T> It;
+      static_assert(std::is_same<It::reference, int&&>::value, "");
+  }
+  {
+      typedef DummyIt<int, int&&> T;
+      typedef std::move_iterator<T> It;
+      static_assert(std::is_same<It::reference, int&&>::value, "");
+  }
+#endif
+
+#if TEST_STD_VER > 17
+  test<contiguous_iterator<char*>>();
+  static_assert(std::is_same_v<typename std::move_iterator<forward_iterator<char*>>::iterator_concept, std::input_iterator_tag>);
+  static_assert(std::is_same_v<typename std::move_iterator<bidirectional_iterator<char*>>::iterator_concept, std::input_iterator_tag>);
+  static_assert(std::is_same_v<typename std::move_iterator<random_access_iterator<char*>>::iterator_concept, std::input_iterator_tag>);
+  static_assert(std::is_same_v<typename std::move_iterator<contiguous_iterator<char*>>::iterator_concept, std::input_iterator_tag>);
+  static_assert(std::is_same_v<typename std::move_iterator<char*>::iterator_concept, std::input_iterator_tag>);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/assign.converting.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/assign.converting.pass.cpp
new file mode 100644
index 0000000..aa81390
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/assign.converting.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_sentinel
+
+// template<class S2>
+//   requires assignable_from<S&, const S2&>
+//     constexpr move_sentinel& operator=(const move_sentinel<S2>& s);
+
+#include <cassert>
+#include <concepts>
+#include <iterator>
+#include <type_traits>
+
+struct NonAssignable {
+  NonAssignable& operator=(int i);
+};
+static_assert(std::semiregular<NonAssignable>);
+static_assert(std::is_assignable_v<NonAssignable, int>);
+static_assert(!std::assignable_from<NonAssignable, int>);
+
+constexpr bool test()
+{
+  // Assigning from an lvalue.
+  {
+    std::move_sentinel<int> m(42);
+    std::move_sentinel<long> m2;
+    m2 = m;
+    assert(m2.base() == 42L);
+  }
+
+  // Assigning from an rvalue.
+  {
+    std::move_sentinel<long> m2;
+    m2 = std::move_sentinel<int>(43);
+    assert(m2.base() == 43L);
+  }
+
+  // SFINAE checks.
+  {
+    static_assert( std::is_assignable_v<std::move_sentinel<int>, std::move_sentinel<long>>);
+    static_assert(!std::is_assignable_v<std::move_sentinel<int*>, std::move_sentinel<const int*>>);
+    static_assert( std::is_assignable_v<std::move_sentinel<const int*>, std::move_sentinel<int*>>);
+    static_assert(!std::is_assignable_v<std::move_sentinel<NonAssignable>, std::move_sentinel<int>>);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/base.pass.cpp
new file mode 100644
index 0000000..b3b0293
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/base.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_sentinel
+
+// constexpr S base() const;
+
+#include <cassert>
+#include <iterator>
+#include <utility>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+  // The sentinel type is a value.
+  {
+    auto m = std::move_sentinel<int>(42);
+    const auto& cm = m;
+    assert(m.base() == 42);
+    assert(cm.base() == 42);
+    assert(std::move(m).base() == 42);
+    assert(std::move(cm).base() == 42);
+    ASSERT_SAME_TYPE(decltype(m.base()), int);
+    ASSERT_SAME_TYPE(decltype(cm.base()), int);
+    ASSERT_SAME_TYPE(decltype(std::move(m).base()), int);
+    ASSERT_SAME_TYPE(decltype(std::move(cm).base()), int);
+  }
+
+  // The sentinel type is a pointer.
+  {
+    int a[] = {1, 2, 3};
+    auto m = std::move_sentinel<const int*>(a);
+    const auto& cm = m;
+    assert(m.base() == a);
+    assert(cm.base() == a);
+    assert(std::move(m).base() == a);
+    assert(std::move(cm).base() == a);
+    ASSERT_SAME_TYPE(decltype(m.base()), const int*);
+    ASSERT_SAME_TYPE(decltype(cm.base()), const int*);
+    ASSERT_SAME_TYPE(decltype(std::move(m).base()), const int*);
+    ASSERT_SAME_TYPE(decltype(std::move(cm).base()), const int*);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..80dc4de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/concept_conformance.compile.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// template<semiregular S>
+//   class move_sentinel;
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+void test()
+{
+  // Pointer.
+  {
+    using It = int*;
+    static_assert( std::sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `Cpp17InputIterator`.
+  {
+    using It = cpp17_input_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `std::input_iterator`.
+  {
+    using It = cpp20_input_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `std::forward_iterator`.
+  {
+    using It = forward_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `std::bidirectional_iterator`.
+  {
+    using It = bidirectional_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `std::random_access_iterator`.
+  {
+    using It = random_access_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `std::contiguous_iterator`.
+  {
+    using It = contiguous_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+
+  // `std::contiguous_iterator` with the spaceship operator.
+  {
+    using It = three_way_contiguous_iterator<int*>;
+    static_assert( std::sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<It>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert(!std::sized_sentinel_for<std::move_sentinel<sentinel_wrapper<It>>, std::move_iterator<It>>);
+    static_assert( std::sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+    static_assert( std::sized_sentinel_for<std::move_sentinel<sized_sentinel<It>>, std::move_iterator<It>>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/constraints.compile.pass.cpp
new file mode 100644
index 0000000..2811ff0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/constraints.compile.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// template<semiregular S>
+//   class move_sentinel;
+
+#include <iterator>
+
+template<class T>
+concept HasMoveSentinel = requires {
+  typename std::move_sentinel<T>;
+};
+
+struct Semiregular {};
+
+struct NotSemiregular {
+  NotSemiregular(int);
+};
+
+static_assert( HasMoveSentinel<int>);
+static_assert( HasMoveSentinel<int*>);
+static_assert( HasMoveSentinel<Semiregular>);
+static_assert(!HasMoveSentinel<NotSemiregular>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctad.compile.pass.cpp
new file mode 100644
index 0000000..9b68bea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctad.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <iterator>
+#include <type_traits>
+
+#include <test_iterators.h>
+
+static_assert(std::is_same_v<decltype(std::move_sentinel(std::default_sentinel_t{})),
+                             std::move_sentinel<std::default_sentinel_t>>);
+
+static_assert(
+    std::is_same_v<decltype(std::move_sentinel(sentinel_wrapper<int*>{})), std::move_sentinel<sentinel_wrapper<int*>>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.converting.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.converting.pass.cpp
new file mode 100644
index 0000000..21271b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.converting.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_sentinel
+
+// template<class S2>
+//    requires convertible_to<const S2&, S>
+//      constexpr move_sentinel(const move_sentinel<S2>& s);
+
+#include <cassert>
+#include <concepts>
+#include <iterator>
+#include <type_traits>
+
+struct NonConvertible {
+    explicit NonConvertible();
+    NonConvertible(int i);
+    explicit NonConvertible(long i) = delete;
+};
+static_assert(std::semiregular<NonConvertible>);
+static_assert(std::is_convertible_v<long, NonConvertible>);
+static_assert(!std::convertible_to<long, NonConvertible>);
+
+constexpr bool test()
+{
+  // Constructing from an lvalue.
+  {
+    std::move_sentinel<int> m(42);
+    std::move_sentinel<long> m2 = m;
+    assert(m2.base() == 42L);
+  }
+
+  // Constructing from an rvalue.
+  {
+    std::move_sentinel<long> m2 = std::move_sentinel<int>(43);
+    assert(m2.base() == 43L);
+  }
+
+  // SFINAE checks.
+  {
+    static_assert( std::is_convertible_v<std::move_sentinel<int>, std::move_sentinel<long>>);
+    static_assert( std::is_convertible_v<std::move_sentinel<int*>, std::move_sentinel<const int*>>);
+    static_assert(!std::is_convertible_v<std::move_sentinel<const int*>, std::move_sentinel<int*>>);
+    static_assert( std::is_convertible_v<std::move_sentinel<int>, std::move_sentinel<NonConvertible>>);
+    static_assert(!std::is_convertible_v<std::move_sentinel<long>, std::move_sentinel<NonConvertible>>);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..c446373
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.default.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_sentinel
+
+// constexpr move_sentinel();
+
+#include <iterator>
+#include <cassert>
+
+constexpr bool test()
+{
+
+  // The underlying sentinel is an integer.
+  {
+    std::move_sentinel<int> m;
+    assert(m.base() == 0);
+  }
+
+  // The underlying sentinel is a pointer.
+  {
+    std::move_sentinel<int*> m;
+    assert(m.base() == nullptr);
+  }
+
+  // The underlying sentinel is a user-defined type with an explicit default constructor.
+  {
+    struct S {
+      explicit S() = default;
+      int i = 3;
+    };
+    std::move_sentinel<S> m;
+    assert(m.base().i == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.sentinel.pass.cpp
new file mode 100644
index 0000000..425b3bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/ctor.sentinel.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_sentinel
+
+// constexpr explicit move_sentinel(S s);
+
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+constexpr bool test()
+{
+  // The underlying sentinel is an integer.
+  {
+    static_assert(!std::is_convertible_v<int, std::move_sentinel<int>>);
+    std::move_sentinel<int> m(42);
+    assert(m.base() == 42);
+  }
+
+  // The underlying sentinel is a pointer.
+  {
+    static_assert(!std::is_convertible_v<int*, std::move_sentinel<int*>>);
+    int i = 42;
+    std::move_sentinel<int*> m(&i);
+    assert(m.base() == &i);
+  }
+
+  // The underlying sentinel is a user-defined type with an explicit default constructor.
+  {
+    struct S {
+      explicit S() = default;
+      constexpr explicit S(int j) : i(j) {}
+      int i = 3;
+    };
+    static_assert(!std::is_convertible_v<S, std::move_sentinel<S>>);
+    std::move_sentinel<S> m(S(42));
+    assert(m.base().i == 42);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/op_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/op_eq.pass.cpp
new file mode 100644
index 0000000..9519eb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/move.iterators/move.sentinel/op_eq.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// move_sentinel
+
+// template <class Iter, class Sent>
+//   constexpr bool operator==(const move_iterator<Iter>& x, const move_sentinel<Sent>& y);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class T, class U> concept HasEquals = requires (T t, U u) { t == u; };
+template<class T, class U> concept HasNotEquals = requires (T t, U u) { t != u; };
+template<class T, class U> concept HasLess = requires (T t, U u) { t < u; };
+
+static_assert(!HasEquals<std::move_iterator<int*>, std::move_sentinel<char*>>);
+static_assert(!HasNotEquals<std::move_iterator<int*>, std::move_sentinel<char*>>);
+static_assert(!HasLess<std::move_iterator<int*>, std::move_sentinel<char*>>);
+
+static_assert( HasEquals<std::move_iterator<int*>, std::move_sentinel<const int*>>);
+static_assert( HasNotEquals<std::move_iterator<int*>, std::move_sentinel<const int*>>);
+static_assert(!HasLess<std::move_iterator<int*>, std::move_sentinel<const int*>>);
+
+static_assert( HasEquals<std::move_iterator<const int*>, std::move_sentinel<int*>>);
+static_assert( HasNotEquals<std::move_iterator<const int*>, std::move_sentinel<int*>>);
+static_assert(!HasLess<std::move_iterator<const int*>, std::move_sentinel<int*>>);
+
+template <class It>
+constexpr void test_one() {
+  char s[] = "abc";
+  const auto it = std::move_iterator<It>(It(s));
+  const auto sent1 = std::move_sentinel<sentinel_wrapper<It>>(sentinel_wrapper<It>(It(s)));
+  const auto sent2 = std::move_sentinel<sentinel_wrapper<It>>(sentinel_wrapper<It>(It(s + 1)));
+  ASSERT_SAME_TYPE(decltype(it == sent1), bool);
+  assert( (it == sent1));
+  assert(!(it != sent1));
+  assert(!(it == sent2));
+  assert( (it != sent2));
+  assert( (sent1 == it));
+  assert(!(sent1 != it));
+  assert(!(sent2 == it));
+  assert( (sent2 != it));
+  static_assert(!HasEquals<decltype(sent1), decltype(sent1)>);
+  static_assert(!HasLess<decltype(sent1), decltype(sent1)>);
+}
+
+constexpr bool test() {
+  test_one<cpp17_input_iterator<char*>>();
+  test_one<cpp20_input_iterator<char*>>();
+  test_one<forward_iterator<char*>>();
+  test_one<bidirectional_iterator<char*>>();
+  test_one<random_access_iterator<char*>>();
+  test_one<contiguous_iterator<char*>>();
+  test_one<three_way_contiguous_iterator<char*>>();
+  test_one<char*>();
+  test_one<const char*>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..4aae044
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// reverse_iterator
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+template<class I1>
+constexpr bool common_reverse_iterator_checks() {
+  static_assert(std::indirectly_writable<I1, int>);
+  static_assert(std::sentinel_for<I1, I1>);
+  return true;
+}
+
+using reverse_bidirectional_iterator = std::reverse_iterator<bidirectional_iterator<int*>>;
+static_assert(common_reverse_iterator_checks<reverse_bidirectional_iterator>());
+static_assert(std::bidirectional_iterator<reverse_bidirectional_iterator>);
+static_assert(!std::random_access_iterator<reverse_bidirectional_iterator>);
+static_assert(!std::sized_sentinel_for<reverse_bidirectional_iterator, reverse_bidirectional_iterator>);
+static_assert( std::indirectly_movable<reverse_bidirectional_iterator, reverse_bidirectional_iterator>);
+static_assert( std::indirectly_movable_storable<reverse_bidirectional_iterator, reverse_bidirectional_iterator>);
+static_assert( std::indirectly_copyable<reverse_bidirectional_iterator, reverse_bidirectional_iterator>);
+static_assert( std::indirectly_copyable_storable<reverse_bidirectional_iterator, reverse_bidirectional_iterator>);
+static_assert( std::indirectly_swappable<reverse_bidirectional_iterator, reverse_bidirectional_iterator>);
+
+using reverse_random_access_iterator = std::reverse_iterator<random_access_iterator<int*>>;
+static_assert(common_reverse_iterator_checks<reverse_random_access_iterator>());
+static_assert(std::random_access_iterator<reverse_random_access_iterator>);
+static_assert(!std::contiguous_iterator<reverse_random_access_iterator>);
+static_assert(std::sized_sentinel_for<reverse_random_access_iterator, reverse_random_access_iterator>);
+static_assert( std::indirectly_movable<reverse_random_access_iterator, reverse_random_access_iterator>);
+static_assert( std::indirectly_movable_storable<reverse_random_access_iterator, reverse_random_access_iterator>);
+static_assert( std::indirectly_copyable<reverse_random_access_iterator, reverse_random_access_iterator>);
+static_assert( std::indirectly_copyable_storable<reverse_random_access_iterator, reverse_random_access_iterator>);
+static_assert( std::indirectly_swappable<reverse_random_access_iterator, reverse_random_access_iterator>);
+
+using reverse_contiguous_iterator = std::reverse_iterator<contiguous_iterator<int*>>;
+static_assert(common_reverse_iterator_checks<reverse_contiguous_iterator>());
+static_assert(std::random_access_iterator<reverse_contiguous_iterator>);
+static_assert(!std::contiguous_iterator<reverse_contiguous_iterator>);
+static_assert(std::sized_sentinel_for<reverse_contiguous_iterator, reverse_contiguous_iterator>);
+static_assert( std::indirectly_movable<reverse_contiguous_iterator, reverse_contiguous_iterator>);
+static_assert( std::indirectly_movable_storable<reverse_contiguous_iterator, reverse_contiguous_iterator>);
+static_assert( std::indirectly_copyable<reverse_contiguous_iterator, reverse_contiguous_iterator>);
+static_assert( std::indirectly_copyable_storable<reverse_contiguous_iterator, reverse_contiguous_iterator>);
+static_assert( std::indirectly_swappable<reverse_contiguous_iterator, reverse_contiguous_iterator>);
+
+static_assert( std::equality_comparable_with<std::reverse_iterator<int*>, std::reverse_iterator<const int*>>);
+static_assert(!std::equality_comparable_with<std::reverse_iterator<int*>, std::reverse_iterator<char*>>);
+static_assert( std::totally_ordered_with<std::reverse_iterator<int*>, std::reverse_iterator<const int*>>);
+static_assert(!std::totally_ordered_with<std::reverse_iterator<int*>, std::reverse_iterator<char*>>);
+static_assert( std::three_way_comparable_with<std::reverse_iterator<int*>, std::reverse_iterator<const int*>>);
+static_assert(!std::three_way_comparable_with<std::reverse_iterator<int*>, std::reverse_iterator<char*>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/equal.pass.cpp
new file mode 100644
index 0000000..fcf8d88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <BidirectionalIterator Iter1, BidirectionalIterator Iter2>
+//   requires HasEqualTo<Iter1, Iter2>
+// bool operator==(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::reverse_iterator<It> r1(l);
+    const std::reverse_iterator<It> r2(r);
+    assert((r1 == r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s), true);
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+1), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), false);
+    test(s, s, true);
+    test(s, s+1, false);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/greater-equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/greater-equal.pass.cpp
new file mode 100644
index 0000000..fdcd02a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/greater-equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator>=(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::reverse_iterator<It> r1(l);
+    const std::reverse_iterator<It> r2(r);
+    assert((r1 >= r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), true);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), false);
+    test(s, s, true);
+    test(s, s+1, true);
+    test(s+1, s, false);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/greater.pass.cpp
new file mode 100644
index 0000000..dce331e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/greater.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator>(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::reverse_iterator<It> r1(l);
+    const std::reverse_iterator<It> r2(r);
+    assert((r1 > r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), true);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), false);
+    test(s, s, false);
+    test(s, s+1, true);
+    test(s+1, s, false);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/less-equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/less-equal.pass.cpp
new file mode 100644
index 0000000..e9cea62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/less-equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator<=(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::reverse_iterator<It> r1(l);
+    const std::reverse_iterator<It> r2(r);
+    assert((r1 <= r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), false);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), true);
+    test(s, s, true);
+    test(s, s+1, false);
+    test(s+1, s, true);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/less.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/less.pass.cpp
new file mode 100644
index 0000000..b66147c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/less.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasGreater<Iter1, Iter2>
+// bool operator<(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::reverse_iterator<It> r1(l);
+    const std::reverse_iterator<It> r2(r);
+    assert((r1 < r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), false);
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s), true);
+    test(s, s, false);
+    test(s, s+1, false);
+    test(s+1, s, true);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/not-equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/not-equal.pass.cpp
new file mode 100644
index 0000000..37a6ff1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/not-equal.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <BidirectionalIterator Iter1, BidirectionalIterator Iter2>
+//   requires HasEqualTo<Iter1, Iter2>
+// bool operator!=(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It l, It r, bool x) {
+    const std::reverse_iterator<It> r1(l);
+    const std::reverse_iterator<It> r2(r);
+    assert((r1 != r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s), false);
+    test(bidirectional_iterator<const char*>(s), bidirectional_iterator<const char*>(s+1), true);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s), false);
+    test(random_access_iterator<const char*>(s), random_access_iterator<const char*>(s+1), true);
+    test(s, s, false);
+    test(s, s+1, true);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/sfinae.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/sfinae.compile.pass.cpp
new file mode 100644
index 0000000..92e0e5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/sfinae.compile.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// reverse_iterator
+//
+// template <class Iterator1, class Iterator2>
+// constexpr bool                          // constexpr in C++17
+// operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
+//
+// template <class Iterator1, class Iterator2>
+// constexpr bool                          // constexpr in C++17
+// operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
+//
+// template <class Iterator1, class Iterator2>
+// constexpr bool                          // constexpr in C++17
+// operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
+//
+// template <class Iterator1, class Iterator2>
+// constexpr bool                          // constexpr in C++17
+// operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
+//
+// template <class Iterator1, class Iterator2>
+// constexpr bool                          // constexpr in C++17
+// operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
+//
+// template <class Iterator1, class Iterator2>
+// constexpr bool                          // constexpr in C++17
+// operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
+//
+// template<class Iterator1, three_way_comparable_with<Iterator1> Iterator2>
+//  constexpr compare_three_way_result_t<Iterator1, Iterator2>
+//    operator<=>(const reverse_iterator<Iterator1>& x,
+//                const reverse_iterator<Iterator2>& y);
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct IterBase {
+  using iterator_category = std::bidirectional_iterator_tag;
+  using value_type = int;
+  using difference_type = ptrdiff_t;
+  using pointer = int*;
+  using reference = int&;
+
+  reference operator*() const;
+  pointer operator->() const;
+};
+
+template<class T> concept HasEqual = requires (T t) { t == t; };
+template<class T> concept HasNotEqual = requires (T t) { t != t; };
+template<class T> concept HasLess = requires (T t) { t < t; };
+template<class T> concept HasLessOrEqual = requires (T t) { t <= t; };
+template<class T> concept HasGreater = requires (T t) { t > t; };
+template<class T> concept HasGreaterOrEqual = requires (T t) { t >= t; };
+template<class T> concept HasSpaceship = requires (T t) { t <=> t; };
+
+// operator ==
+
+struct NoEqualityCompIter : IterBase {
+  bool operator!=(NoEqualityCompIter) const;
+  bool operator<(NoEqualityCompIter) const;
+  bool operator>(NoEqualityCompIter) const;
+  bool operator<=(NoEqualityCompIter) const;
+  bool operator>=(NoEqualityCompIter) const;
+};
+
+static_assert( HasEqual<std::reverse_iterator<int*>>);
+static_assert(!HasEqual<std::reverse_iterator<NoEqualityCompIter>>);
+static_assert( HasNotEqual<std::reverse_iterator<NoEqualityCompIter>>);
+static_assert( HasLess<std::reverse_iterator<NoEqualityCompIter>>);
+static_assert( HasLessOrEqual<std::reverse_iterator<NoEqualityCompIter>>);
+static_assert( HasGreater<std::reverse_iterator<NoEqualityCompIter>>);
+static_assert( HasGreaterOrEqual<std::reverse_iterator<NoEqualityCompIter>>);
+
+void Foo() {
+  std::reverse_iterator<NoEqualityCompIter> i;
+  (void)i;
+}
+
+// operator !=
+
+struct NoInequalityCompIter : IterBase {
+  bool operator<(NoInequalityCompIter) const;
+  bool operator>(NoInequalityCompIter) const;
+  bool operator<=(NoInequalityCompIter) const;
+  bool operator>=(NoInequalityCompIter) const;
+};
+
+static_assert( HasNotEqual<std::reverse_iterator<int*>>);
+static_assert(!HasNotEqual<std::reverse_iterator<NoInequalityCompIter>>);
+static_assert(!HasEqual<std::reverse_iterator<NoInequalityCompIter>>);
+static_assert( HasLess<std::reverse_iterator<NoInequalityCompIter>>);
+static_assert( HasLessOrEqual<std::reverse_iterator<NoInequalityCompIter>>);
+static_assert( HasGreater<std::reverse_iterator<NoInequalityCompIter>>);
+static_assert( HasGreaterOrEqual<std::reverse_iterator<NoInequalityCompIter>>);
+
+// operator <
+
+struct NoGreaterCompIter : IterBase {
+  bool operator==(NoGreaterCompIter) const;
+  bool operator!=(NoGreaterCompIter) const;
+  bool operator<(NoGreaterCompIter) const;
+  bool operator<=(NoGreaterCompIter) const;
+  bool operator>=(NoGreaterCompIter) const;
+};
+
+static_assert( HasLess<std::reverse_iterator<int*>>);
+static_assert(!HasLess<std::reverse_iterator<NoGreaterCompIter>>);
+static_assert( HasEqual<std::reverse_iterator<NoGreaterCompIter>>);
+static_assert( HasNotEqual<std::reverse_iterator<NoGreaterCompIter>>);
+static_assert( HasLessOrEqual<std::reverse_iterator<NoGreaterCompIter>>);
+static_assert( HasGreater<std::reverse_iterator<NoGreaterCompIter>>);
+static_assert( HasGreaterOrEqual<std::reverse_iterator<NoGreaterCompIter>>);
+
+// operator >
+
+struct NoLessCompIter : IterBase {
+  bool operator==(NoLessCompIter) const;
+  bool operator!=(NoLessCompIter) const;
+  bool operator>(NoLessCompIter) const;
+  bool operator<=(NoLessCompIter) const;
+  bool operator>=(NoLessCompIter) const;
+};
+
+static_assert( HasGreater<std::reverse_iterator<int*>>);
+static_assert(!HasGreater<std::reverse_iterator<NoLessCompIter>>);
+static_assert( HasEqual<std::reverse_iterator<NoLessCompIter>>);
+static_assert( HasNotEqual<std::reverse_iterator<NoLessCompIter>>);
+static_assert( HasLess<std::reverse_iterator<NoLessCompIter>>);
+static_assert( HasLessOrEqual<std::reverse_iterator<NoLessCompIter>>);
+static_assert( HasGreaterOrEqual<std::reverse_iterator<NoLessCompIter>>);
+
+// operator <=
+
+struct NoGreaterOrEqualCompIter : IterBase {
+  bool operator==(NoGreaterOrEqualCompIter) const;
+  bool operator!=(NoGreaterOrEqualCompIter) const;
+  bool operator<(NoGreaterOrEqualCompIter) const;
+  bool operator>(NoGreaterOrEqualCompIter) const;
+  bool operator<=(NoGreaterOrEqualCompIter) const;
+};
+
+static_assert( HasLessOrEqual<std::reverse_iterator<int*>>);
+static_assert(!HasLessOrEqual<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+static_assert( HasEqual<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+static_assert( HasNotEqual<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+static_assert( HasLess<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+static_assert( HasGreater<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+static_assert( HasGreaterOrEqual<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+
+// operator >=
+
+struct NoLessOrEqualCompIter : IterBase {
+  bool operator==(NoLessOrEqualCompIter) const;
+  bool operator!=(NoLessOrEqualCompIter) const;
+  bool operator<(NoLessOrEqualCompIter) const;
+  bool operator>(NoLessOrEqualCompIter) const;
+  bool operator>=(NoLessOrEqualCompIter) const;
+};
+
+static_assert( HasGreaterOrEqual<std::reverse_iterator<int*>>);
+static_assert(!HasGreaterOrEqual<std::reverse_iterator<NoLessOrEqualCompIter>>);
+static_assert( HasEqual<std::reverse_iterator<NoLessOrEqualCompIter>>);
+static_assert( HasNotEqual<std::reverse_iterator<NoLessOrEqualCompIter>>);
+static_assert( HasLess<std::reverse_iterator<NoLessOrEqualCompIter>>);
+static_assert( HasLessOrEqual<std::reverse_iterator<NoLessOrEqualCompIter>>);
+static_assert( HasGreater<std::reverse_iterator<NoLessOrEqualCompIter>>);
+
+// operator <=>
+
+static_assert( std::three_way_comparable_with<int*, int*>);
+static_assert( HasSpaceship<std::reverse_iterator<int*>>);
+static_assert(!std::three_way_comparable_with<NoEqualityCompIter, NoEqualityCompIter>);
+static_assert(!HasSpaceship<std::reverse_iterator<NoEqualityCompIter>>);
+static_assert(!std::three_way_comparable_with<NoInequalityCompIter, NoInequalityCompIter>);
+static_assert(!HasSpaceship<std::reverse_iterator<NoInequalityCompIter>>);
+static_assert(!std::three_way_comparable_with<NoGreaterCompIter, NoGreaterCompIter>);
+static_assert(!HasSpaceship<std::reverse_iterator<NoGreaterCompIter>>);
+static_assert(!std::three_way_comparable_with<NoLessCompIter, NoLessCompIter>);
+static_assert(!HasSpaceship<std::reverse_iterator<NoLessCompIter>>);
+static_assert(!std::three_way_comparable_with<NoGreaterOrEqualCompIter, NoGreaterOrEqualCompIter>);
+static_assert(!HasSpaceship<std::reverse_iterator<NoGreaterOrEqualCompIter>>);
+static_assert(!std::three_way_comparable_with<NoLessOrEqualCompIter, NoLessOrEqualCompIter>);
+static_assert(!HasSpaceship<std::reverse_iterator<NoLessOrEqualCompIter>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/three-way.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/three-way.pass.cpp
new file mode 100644
index 0000000..84e2a35
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cmp/three-way.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// reverse_iterator
+
+// template<class Iterator1, three_way_comparable_with<Iterator1> Iterator2>
+//   constexpr compare_three_way_result_t<Iterator1, Iterator2>
+//    operator<=>(const reverse_iterator<Iterator1>& x,
+//                const reverse_iterator<Iterator2>& y);
+
+#include <iterator>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class ItL, class ItR, class Ord>
+constexpr void test(ItL l, ItR r, Ord x) {
+    const std::reverse_iterator<ItL> l1(l);
+    const std::reverse_iterator<ItR> r1(r);
+    ASSERT_SAME_TYPE(decltype(l1 <=> r1), Ord);
+    assert((l1 <=> r1) == x);
+}
+
+struct Iter {
+    using iterator_category = std::bidirectional_iterator_tag;
+    using pointer = char*;
+    using reference = char&;
+    using value_type = char;
+    using difference_type = double;
+
+    constexpr Iter(double value): m_value(value) {}
+    double m_value;
+
+    reference operator*() const;
+private:
+    friend constexpr bool operator==(const Iter& l, const Iter& r) = default;
+    friend constexpr std::partial_ordering operator<=>(const Iter& l, const Iter& r) = default;
+};
+
+struct ConstIter {
+    using iterator_category = std::bidirectional_iterator_tag;
+    using pointer = const char*;
+    using reference = const char&;
+    using value_type = const char;
+    using difference_type = double;
+
+    constexpr ConstIter(double value): m_value(value) {}
+    constexpr ConstIter(Iter it): m_value(it.m_value) {}
+    double m_value;
+
+    reference operator*() const;
+private:
+    friend constexpr bool operator==(const ConstIter& l, const ConstIter& r) = default;
+    friend constexpr std::partial_ordering operator<=>(const ConstIter& l, const ConstIter& r) = default;
+};
+
+constexpr bool tests() {
+    char s[] = "1234567890";
+    test(three_way_contiguous_iterator<const char*>(s),
+         three_way_contiguous_iterator<const char*>(s),
+         std::strong_ordering::equal);
+    test(three_way_contiguous_iterator<const char*>(s),
+         three_way_contiguous_iterator<const char*>(s+1),
+         std::strong_ordering::greater);
+    test(three_way_contiguous_iterator<const char*>(s+1),
+         three_way_contiguous_iterator<const char*>(s),
+         std::strong_ordering::less);
+
+    test(s, s, std::strong_ordering::equal);
+    test(s, s+1, std::strong_ordering::greater);
+    test(s+1, s, std::strong_ordering::less);
+
+    const char* cs = s;
+    test(cs, s, std::strong_ordering::equal);
+    test(cs, s+1, std::strong_ordering::greater);
+    test(cs+1, s, std::strong_ordering::less);
+
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    test(Iter(0), ConstIter(nan), std::partial_ordering::unordered);
+    test(Iter(nan), Iter(nan), std::partial_ordering::unordered);
+    test(ConstIter(0), Iter(1), std::partial_ordering::greater);
+    test(ConstIter(3), Iter(2), std::partial_ordering::less);
+    test(ConstIter(7), Iter(7), std::partial_ordering::equivalent);
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+    static_assert(tests());
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/assign.LWG3435.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/assign.LWG3435.verify.cpp
new file mode 100644
index 0000000..3b3c7cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/assign.LWG3435.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <class U>
+//  requires !same_as<U, Iter> && convertible_to<const U&, Iter> && assignable_from<Iter&, const U&>
+// reverse_iterator& operator=(const reverse_iterator<U>& u);
+
+#include <iterator>
+
+struct Base { };
+struct Derived : Base { };
+
+void test() {
+    std::reverse_iterator<Base*> base;
+    std::reverse_iterator<Derived*> derived;
+    derived = base; // expected-error {{no viable overloaded '='}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/assign.pass.cpp
new file mode 100644
index 0000000..0e5123a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/assign.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <class U>
+// reverse_iterator& operator=(const reverse_iterator<U>& u); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It, class U>
+TEST_CONSTEXPR_CXX17 void test(U u) {
+    const std::reverse_iterator<U> r2(u);
+    std::reverse_iterator<It> r1;
+    std::reverse_iterator<It>& rr = r1 = r2;
+    assert(base(r1.base()) == base(u));
+    assert(&rr == &r1);
+}
+
+struct Base { };
+struct Derived : Base { };
+
+struct ToIter {
+    typedef std::bidirectional_iterator_tag iterator_category;
+    typedef char *pointer;
+    typedef char &reference;
+    typedef char value_type;
+    typedef value_type difference_type;
+
+    explicit TEST_CONSTEXPR_CXX17 ToIter() : m_value(0) {}
+    TEST_CONSTEXPR_CXX17 ToIter(const ToIter &src) : m_value(src.m_value) {}
+    // Intentionally not defined, must not be called.
+    ToIter(char *src);
+    TEST_CONSTEXPR_CXX17 ToIter &operator=(char *src) {
+        m_value = src;
+        return *this;
+    }
+    TEST_CONSTEXPR_CXX17 ToIter &operator=(const ToIter &src) {
+        m_value = src.m_value;
+        return *this;
+    }
+    char *m_value;
+
+    reference operator*() const;
+};
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    Derived d;
+    test<bidirectional_iterator<Base*> >(bidirectional_iterator<Derived*>(&d));
+    test<random_access_iterator<const Base*> >(random_access_iterator<Derived*>(&d));
+    test<Base*>(&d);
+
+    char c = '\0';
+    char *fi = &c;
+    const std::reverse_iterator<char *> rev_fi(fi);
+    std::reverse_iterator<ToIter> rev_ti;
+    rev_ti = rev_fi;
+    assert(rev_ti.base().m_value == fi);
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.default.pass.cpp
new file mode 100644
index 0000000..fcb96de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// reverse_iterator(); // constexpr since C++17
+
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test() {
+    std::reverse_iterator<It> r;
+    (void)r;
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    test<bidirectional_iterator<const char*> >();
+    test<random_access_iterator<char*> >();
+    test<char*>();
+    test<const char*>();
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.iter.explicit.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.iter.explicit.verify.cpp
new file mode 100644
index 0000000..940848b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.iter.explicit.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// explicit reverse_iterator(Iter x);
+
+// test explicitness
+
+#include <iterator>
+
+int main(int, char**) {
+    char const* it = "";
+    std::reverse_iterator<char const*> r = it; // expected-error{{no viable conversion from 'const char *' to 'std::reverse_iterator<const char *>'}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.iter.pass.cpp
new file mode 100644
index 0000000..801b2cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.iter.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// explicit reverse_iterator(Iter x); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i) {
+    std::reverse_iterator<It> r(i);
+    assert(r.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char s[] = "123";
+    test(bidirectional_iterator<const char*>(s));
+    test(random_access_iterator<const char*>(s));
+    test(s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.reverse_iterator.LWG3435.verify.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.reverse_iterator.LWG3435.verify.cpp
new file mode 100644
index 0000000..6082809
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.reverse_iterator.LWG3435.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <class U>
+//  requires !same_as<U, Iter> && convertible_to<const U&, Iter>
+// reverse_iterator(const reverse_iterator<U> &);
+
+#include <iterator>
+
+struct Base { };
+struct Derived : Base { };
+
+void test() {
+    std::reverse_iterator<Base*> base;
+    std::reverse_iterator<Derived*> derived(base); // expected-error {{no matching constructor for initialization of 'std::reverse_iterator<Derived *>'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.reverse_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.reverse_iterator.pass.cpp
new file mode 100644
index 0000000..8f315e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.cons/ctor.reverse_iterator.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <class U>
+// reverse_iterator(const reverse_iterator<U> &u); // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Base { };
+struct Derived : Base { };
+
+template <class It, class U>
+TEST_CONSTEXPR_CXX17 void test(U u) {
+    const std::reverse_iterator<U> r2(u);
+    std::reverse_iterator<It> r1 = r2;
+    assert(base(r1.base()) == base(u));
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    Derived d;
+    test<bidirectional_iterator<Base*> >(bidirectional_iterator<Derived*>(&d));
+    test<random_access_iterator<const Base*> >(random_access_iterator<Derived*>(&d));
+    test<Base*>(&d);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.conv/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.conv/base.pass.cpp
new file mode 100644
index 0000000..4fb33f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.conv/base.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// iterator_type base() const; // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+TEST_CONSTEXPR_CXX17 bool test() {
+    typedef bidirectional_iterator<int*> Iter;
+    int i = 0;
+    Iter iter(&i);
+    std::reverse_iterator<Iter> const reverse(iter);
+    std::reverse_iterator<Iter>::iterator_type base = reverse.base();
+    assert(base == Iter(&i));
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 14
+    static_assert(test(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/arrow.pass.cpp
new file mode 100644
index 0000000..bbe9c3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/arrow.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// pointer operator->() const; // constexpr in C++17
+
+// Be sure to respect LWG 198:
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#198
+// LWG 198 was superseded by LWG 2360
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2360
+
+
+#include <iterator>
+#include <list>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    A() : data_(1) {}
+    ~A() {data_ = -1;}
+
+    int get() const {return data_;}
+
+    friend bool operator==(const A& x, const A& y)
+        {return x.data_ == y.data_;}
+};
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::value_type x)
+{
+    std::reverse_iterator<It> r(i);
+    assert(r->get() == x.get());
+}
+
+class B
+{
+    int data_;
+public:
+    B(int d=1) : data_(d) {}
+    ~B() {data_ = -1;}
+
+    int get() const {return data_;}
+
+    friend bool operator==(const B& x, const B& y)
+        {return x.data_ == y.data_;}
+    const B *operator&() const { return nullptr; }
+    B       *operator&()       { return nullptr; }
+};
+
+class C
+{
+    int data_;
+public:
+    TEST_CONSTEXPR C() : data_(1) {}
+
+    TEST_CONSTEXPR int get() const {return data_;}
+
+    friend TEST_CONSTEXPR bool operator==(const C& x, const C& y)
+        {return x.data_ == y.data_;}
+};
+
+TEST_CONSTEXPR  C gC;
+
+int main(int, char**)
+{
+  A a;
+  test(&a+1, A());
+
+  {
+    std::list<B> l;
+    l.push_back(B(0));
+    l.push_back(B(1));
+    l.push_back(B(2));
+
+    {
+      std::list<B>::const_iterator i = l.begin();
+      assert ( i->get() == 0 );  ++i;
+      assert ( i->get() == 1 );  ++i;
+      assert ( i->get() == 2 );  ++i;
+      assert ( i == l.end ());
+    }
+
+    {
+      std::list<B>::const_reverse_iterator ri = l.rbegin();
+      assert ( ri->get() == 2 );  ++ri;
+      assert ( ri->get() == 1 );  ++ri;
+      assert ( ri->get() == 0 );  ++ri;
+      assert ( ri == l.rend ());
+    }
+  }
+
+#if TEST_STD_VER > 14
+  {
+    typedef std::reverse_iterator<const C *> RI;
+    constexpr RI it1 = std::make_reverse_iterator(&gC+1);
+
+    static_assert(it1->get() == gC.get(), "");
+  }
+#endif
+  {
+    ((void)gC);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/arrow.sfinae.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/arrow.sfinae.compile.pass.cpp
new file mode 100644
index 0000000..b723176
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/arrow.sfinae.compile.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// reverse_iterator
+//
+// pointer operator->() const;
+
+#include <iterator>
+
+#include <type_traits>
+#include "test_iterators.h"
+
+template <class T>
+concept HasArrow = requires(T t) { t.operator->(); };
+
+struct simple_bidirectional_iterator {
+    using iterator_category = std::bidirectional_iterator_tag;
+    using value_type = int;
+    using difference_type = int;
+    using pointer = int*;
+    using reference = int&;
+
+    reference operator*() const;
+    pointer operator->() const;
+
+    simple_bidirectional_iterator& operator++();
+    simple_bidirectional_iterator& operator--();
+    simple_bidirectional_iterator operator++(int);
+    simple_bidirectional_iterator operator--(int);
+
+    friend bool operator==(const simple_bidirectional_iterator&, const simple_bidirectional_iterator&);
+};
+static_assert( std::bidirectional_iterator<simple_bidirectional_iterator>);
+static_assert(!std::random_access_iterator<simple_bidirectional_iterator>);
+
+using PtrRI = std::reverse_iterator<int*>;
+static_assert( HasArrow<PtrRI>);
+
+using PtrLikeRI = std::reverse_iterator<simple_bidirectional_iterator>;
+static_assert( HasArrow<PtrLikeRI>);
+
+// `bidirectional_iterator` from `test_iterators.h` doesn't define `operator->`.
+using NonPtrRI = std::reverse_iterator<bidirectional_iterator<int*>>;
+static_assert(!HasArrow<NonPtrRI>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/bracket.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/bracket.pass.cpp
new file mode 100644
index 0000000..37a857c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/bracket.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// unspecified operator[](difference_type n) const; // constexpr since C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i,
+                               typename std::iterator_traits<It>::difference_type n,
+                               typename std::iterator_traits<It>::value_type x) {
+    typedef typename std::iterator_traits<It>::value_type value_type;
+    const std::reverse_iterator<It> r(i);
+    value_type rr = r[n];
+    assert(rr == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 4, '1');
+    test(random_access_iterator<const char*>(s+5), 0, '5');
+    test(s+5, 4, '1');
+    test(s+5, 0, '5');
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/dereference.pass.cpp
new file mode 100644
index 0000000..19062d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.elem/dereference.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// reference operator*() const; // constexpr in C++17
+
+// Be sure to respect LWG 198:
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#198
+// LWG 198 was superseded by LWG 2360
+//    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2360
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    A() : data_(1) {}
+    ~A() {data_ = -1;}
+
+    friend bool operator==(const A& x, const A& y)
+        {return x.data_ == y.data_;}
+};
+
+template <class It>
+void
+test(It i, typename std::iterator_traits<It>::value_type x)
+{
+    std::reverse_iterator<It> r(i);
+    assert(*r == x);
+}
+
+int main(int, char**)
+{
+    A a;
+    test(&a+1, A());
+
+#if TEST_STD_VER > 14
+    {
+        constexpr const char *p = "123456789";
+        typedef std::reverse_iterator<const char *> RI;
+        constexpr RI it1 = std::make_reverse_iterator(p+1);
+        constexpr RI it2 = std::make_reverse_iterator(p+2);
+        static_assert(*it1 == p[0], "");
+        static_assert(*it2 == p[1], "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/decrement-assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/decrement-assign.pass.cpp
new file mode 100644
index 0000000..8c83ec1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/decrement-assign.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// reverse_iterator& operator-=(difference_type n); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It>& rr = r -= n;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+    test(s+5, 5, s+10);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/increment-assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/increment-assign.pass.cpp
new file mode 100644
index 0000000..e32fac9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/increment-assign.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// reverse_iterator& operator+=(difference_type n); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It>& rr = r += n;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    char const* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/minus.pass.cpp
new file mode 100644
index 0000000..f2474dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/minus.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// reverse_iterator operator-(difference_type n) const; // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    const std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It> rr = r - n;
+    assert(rr.base() == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s+10));
+    test(s+5, 5, s+10);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/plus.pass.cpp
new file mode 100644
index 0000000..5673425
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/plus.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// requires RandomAccessIterator<Iter>
+// reverse_iterator operator+(difference_type n) const; // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    const std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It> rr = r + n;
+    assert(rr.base() == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/postdecrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/postdecrement.pass.cpp
new file mode 100644
index 0000000..24bedad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/postdecrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// reverse_iterator operator--(int); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It> rr = r--;
+    assert(r.base() == x);
+    assert(rr.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s+2));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s+2));
+    test(s+1, s+2);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/postincrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/postincrement.pass.cpp
new file mode 100644
index 0000000..e15bfb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/postincrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// reverse_iterator operator++(int); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It> rr = r++;
+    assert(r.base() == x);
+    assert(rr.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s));
+    test(s+1, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/predecrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/predecrement.pass.cpp
new file mode 100644
index 0000000..2fbd530
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/predecrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// reverse_iterator& operator--(); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It>& rr = --r;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s+2));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s+2));
+    test(s+1, s+2);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/preincrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/preincrement.pass.cpp
new file mode 100644
index 0000000..5efc8a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nav/preincrement.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// reverse_iterator& operator++(); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, It x) {
+    std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It>& rr = ++r;
+    assert(r.base() == x);
+    assert(&rr == &r);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "123";
+    test(bidirectional_iterator<const char*>(s+1), bidirectional_iterator<const char*>(s));
+    test(random_access_iterator<const char*>(s+1), random_access_iterator<const char*>(s));
+    test(s+1, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/iter_move.pass.cpp
new file mode 100644
index 0000000..712425a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/iter_move.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// reverse_iterator
+//
+// friend constexpr iter_rvalue_reference_t<Iterator>
+//   iter_move(const reverse_iterator& i) noexcept(see below);
+
+#include <iterator>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+
+constexpr bool test() {
+  // Can use `iter_move` with a regular array.
+  {
+    constexpr int N = 3;
+    int a[N] = {0, 1, 2};
+
+    std::reverse_iterator<int*> ri(a + N);
+    static_assert(std::same_as<decltype(iter_move(ri)), int&&>);
+    assert(iter_move(ri) == 2);
+
+    ++ri;
+    assert(iter_move(ri) == 1);
+  }
+
+  // Check that the `iter_move` customization point is being used.
+  {
+    constexpr int N = 3;
+    int a[N] = {0, 1, 2};
+
+    int iter_move_invocations = 0;
+    adl::Iterator i = adl::Iterator::TrackMoves(a + N, iter_move_invocations);
+    std::reverse_iterator<adl::Iterator> ri(i);
+    int x = iter_move(ri);
+    assert(x == 2);
+    assert(iter_move_invocations == 1);
+  }
+
+  // Check the `noexcept` specification.
+  {
+    {
+      struct ThrowingCopyNoexceptDecrement {
+        using value_type = int;
+        using difference_type = ptrdiff_t;
+
+        ThrowingCopyNoexceptDecrement();
+        ThrowingCopyNoexceptDecrement(const ThrowingCopyNoexceptDecrement&);
+
+        int& operator*() const noexcept { static int x; return x; }
+
+        ThrowingCopyNoexceptDecrement& operator++();
+        ThrowingCopyNoexceptDecrement operator++(int);
+        ThrowingCopyNoexceptDecrement& operator--() noexcept;
+        ThrowingCopyNoexceptDecrement operator--(int) noexcept;
+
+        bool operator==(const ThrowingCopyNoexceptDecrement&) const = default;
+      };
+      static_assert(std::bidirectional_iterator<ThrowingCopyNoexceptDecrement>);
+
+      static_assert(!std::is_nothrow_copy_constructible_v<ThrowingCopyNoexceptDecrement>);
+      ASSERT_NOEXCEPT(std::ranges::iter_move(--std::declval<ThrowingCopyNoexceptDecrement&>()));
+      using RI = std::reverse_iterator<ThrowingCopyNoexceptDecrement>;
+      ASSERT_NOT_NOEXCEPT(iter_move(std::declval<RI>()));
+    }
+
+    {
+      struct NoexceptCopyThrowingDecrement {
+        using value_type = int;
+        using difference_type = ptrdiff_t;
+
+        NoexceptCopyThrowingDecrement();
+        NoexceptCopyThrowingDecrement(const NoexceptCopyThrowingDecrement&) noexcept;
+
+        int& operator*() const { static int x; return x; }
+
+        NoexceptCopyThrowingDecrement& operator++();
+        NoexceptCopyThrowingDecrement operator++(int);
+        NoexceptCopyThrowingDecrement& operator--();
+        NoexceptCopyThrowingDecrement operator--(int);
+
+        bool operator==(const NoexceptCopyThrowingDecrement&) const = default;
+      };
+      static_assert(std::bidirectional_iterator<NoexceptCopyThrowingDecrement>);
+
+      static_assert( std::is_nothrow_copy_constructible_v<NoexceptCopyThrowingDecrement>);
+      ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(--std::declval<NoexceptCopyThrowingDecrement&>()));
+      using RI = std::reverse_iterator<NoexceptCopyThrowingDecrement>;
+      ASSERT_NOT_NOEXCEPT(iter_move(std::declval<RI>()));
+    }
+
+    {
+      struct NoexceptCopyAndDecrement {
+        using value_type = int;
+        using difference_type = ptrdiff_t;
+
+        NoexceptCopyAndDecrement();
+        NoexceptCopyAndDecrement(const NoexceptCopyAndDecrement&) noexcept;
+
+        int& operator*() const noexcept { static int x; return x; }
+
+        NoexceptCopyAndDecrement& operator++();
+        NoexceptCopyAndDecrement operator++(int);
+        NoexceptCopyAndDecrement& operator--() noexcept;
+        NoexceptCopyAndDecrement operator--(int) noexcept;
+
+        bool operator==(const NoexceptCopyAndDecrement&) const = default;
+      };
+      static_assert(std::bidirectional_iterator<NoexceptCopyAndDecrement>);
+
+      static_assert( std::is_nothrow_copy_constructible_v<NoexceptCopyAndDecrement>);
+      ASSERT_NOEXCEPT(std::ranges::iter_move(--std::declval<NoexceptCopyAndDecrement&>()));
+      using RI = std::reverse_iterator<NoexceptCopyAndDecrement>;
+      ASSERT_NOEXCEPT(iter_move(std::declval<RI>()));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/iter_swap.pass.cpp
new file mode 100644
index 0000000..d01ee2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/iter_swap.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// reverse_iterator
+//
+// template<indirectly_swappable<Iterator> Iterator2>
+//   friend constexpr void
+//     iter_swap(const reverse_iterator& x,
+//               const reverse_iterator<Iterator2>& y) noexcept(see below);
+
+#include <iterator>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+
+constexpr bool test() {
+  // Can use `iter_swap` with a regular array.
+  {
+    constexpr int N = 3;
+    int a[N] = {0, 1, 2};
+
+    std::reverse_iterator<int*> rb(a + N);
+    std::reverse_iterator<int*> re(a + 1);
+    assert(a[0] == 0);
+    assert(a[2] == 2);
+
+    static_assert(std::same_as<decltype(iter_swap(rb, re)), void>);
+    iter_swap(rb, re);
+    assert(a[0] == 2);
+    assert(a[2] == 0);
+  }
+
+  // Check that the `iter_swap` customization point is being used.
+  {
+    int iter_swap_invocations = 0;
+    int a[] = {0, 1, 2};
+    adl::Iterator base1 = adl::Iterator::TrackSwaps(a + 1, iter_swap_invocations);
+    adl::Iterator base2 = adl::Iterator::TrackSwaps(a + 2, iter_swap_invocations);
+    std::reverse_iterator<adl::Iterator> ri1(base1), ri2(base2);
+    iter_swap(ri1, ri2);
+    assert(iter_swap_invocations == 1);
+
+    iter_swap(ri2, ri1);
+    assert(iter_swap_invocations == 2);
+  }
+
+  // Check the `noexcept` specification.
+  {
+    {
+      struct ThrowingCopyNoexceptDecrement {
+        using value_type = int;
+        using difference_type = ptrdiff_t;
+
+        ThrowingCopyNoexceptDecrement();
+        ThrowingCopyNoexceptDecrement(const ThrowingCopyNoexceptDecrement&);
+
+        int& operator*() const noexcept { static int x; return x; }
+
+        ThrowingCopyNoexceptDecrement& operator++();
+        ThrowingCopyNoexceptDecrement operator++(int);
+        ThrowingCopyNoexceptDecrement& operator--() noexcept;
+        ThrowingCopyNoexceptDecrement operator--(int) noexcept;
+
+        bool operator==(const ThrowingCopyNoexceptDecrement&) const = default;
+      };
+      static_assert(std::bidirectional_iterator<ThrowingCopyNoexceptDecrement>);
+
+      static_assert(!std::is_nothrow_copy_constructible_v<ThrowingCopyNoexceptDecrement>);
+      static_assert( std::is_nothrow_copy_constructible_v<int*>);
+      ASSERT_NOEXCEPT(std::ranges::iter_swap(--std::declval<ThrowingCopyNoexceptDecrement&>(), --std::declval<int*&>()));
+      using RI1 = std::reverse_iterator<ThrowingCopyNoexceptDecrement>;
+      using RI2 = std::reverse_iterator<int*>;
+      ASSERT_NOT_NOEXCEPT(iter_swap(std::declval<RI1>(), std::declval<RI2>()));
+      ASSERT_NOT_NOEXCEPT(iter_swap(std::declval<RI2>(), std::declval<RI1>()));
+    }
+
+    {
+      struct NoexceptCopyThrowingDecrement {
+        using value_type = int;
+        using difference_type = ptrdiff_t;
+
+        NoexceptCopyThrowingDecrement();
+        NoexceptCopyThrowingDecrement(const NoexceptCopyThrowingDecrement&) noexcept;
+
+        int& operator*() const { static int x; return x; }
+
+        NoexceptCopyThrowingDecrement& operator++();
+        NoexceptCopyThrowingDecrement operator++(int);
+        NoexceptCopyThrowingDecrement& operator--();
+        NoexceptCopyThrowingDecrement operator--(int);
+
+        bool operator==(const NoexceptCopyThrowingDecrement&) const = default;
+      };
+      static_assert(std::bidirectional_iterator<NoexceptCopyThrowingDecrement>);
+
+      static_assert( std::is_nothrow_copy_constructible_v<NoexceptCopyThrowingDecrement>);
+      static_assert( std::is_nothrow_copy_constructible_v<int*>);
+      ASSERT_NOT_NOEXCEPT(std::ranges::iter_swap(--std::declval<NoexceptCopyThrowingDecrement&>(), --std::declval<int*&>()));
+      using RI1 = std::reverse_iterator<NoexceptCopyThrowingDecrement>;
+      using RI2 = std::reverse_iterator<int*>;
+      ASSERT_NOT_NOEXCEPT(iter_swap(std::declval<RI1>(), std::declval<RI2>()));
+      ASSERT_NOT_NOEXCEPT(iter_swap(std::declval<RI2>(), std::declval<RI1>()));
+    }
+
+    {
+      struct NoexceptCopyAndDecrement {
+        using value_type = int;
+        using difference_type = ptrdiff_t;
+
+        NoexceptCopyAndDecrement();
+        NoexceptCopyAndDecrement(const NoexceptCopyAndDecrement&) noexcept;
+
+        int& operator*() const noexcept { static int x; return x; }
+
+        NoexceptCopyAndDecrement& operator++();
+        NoexceptCopyAndDecrement operator++(int);
+        NoexceptCopyAndDecrement& operator--() noexcept;
+        NoexceptCopyAndDecrement operator--(int) noexcept;
+
+        bool operator==(const NoexceptCopyAndDecrement&) const = default;
+      };
+      static_assert(std::bidirectional_iterator<NoexceptCopyAndDecrement>);
+
+      static_assert( std::is_nothrow_copy_constructible_v<NoexceptCopyAndDecrement>);
+      static_assert( std::is_nothrow_copy_constructible_v<int*>);
+      ASSERT_NOEXCEPT(std::ranges::iter_swap(--std::declval<NoexceptCopyAndDecrement&>(), --std::declval<int*&>()));
+      using RI1 = std::reverse_iterator<NoexceptCopyAndDecrement>;
+      using RI2 = std::reverse_iterator<int*>;
+      ASSERT_NOEXCEPT(iter_swap(std::declval<RI1>(), std::declval<RI2>()));
+      ASSERT_NOEXCEPT(iter_swap(std::declval<RI2>(), std::declval<RI1>()));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/make_reverse_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/make_reverse_iterator.pass.cpp
new file mode 100644
index 0000000..401eecb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/make_reverse_iterator.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <iterator>
+
+// reverse_iterator
+
+// template <class Iterator>
+// reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i) {
+    const std::reverse_iterator<It> r = std::make_reverse_iterator(i);
+    assert(r.base() == i);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    random_access_iterator<const char*> b(s);
+    random_access_iterator<const char*> e(s+10);
+    while (b != e)
+        test (b++);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/minus.pass.cpp
new file mode 100644
index 0000000..f7f74d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/minus.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <RandomAccessIterator Iter1, RandomAccessIterator Iter2>
+//   requires HasMinus<Iter2, Iter1>
+// auto operator-(const reverse_iterator<Iter1>& x, const reverse_iterator<Iter2>& y) // constexpr in C++17
+//  -> decltype(y.base() - x.base());
+
+#include <iterator>
+#include <cstddef>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class, class, class = void> struct HasMinus : std::false_type {};
+template <class R1, class R2> struct HasMinus<R1, R2, decltype((R1() - R2(), void()))> : std::true_type {};
+
+template <class It1, class It2>
+TEST_CONSTEXPR_CXX17 void test(It1 l, It2 r, std::ptrdiff_t x) {
+    const std::reverse_iterator<It1> r1(l);
+    const std::reverse_iterator<It2> r2(r);
+    assert((r1 - r2) == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    using PC = const char*;
+    char s[3] = {0};
+
+    // Test same base iterator type
+    test(s, s, 0);
+    test(s, s+1, 1);
+    test(s+1, s, -1);
+
+    // Test different (but subtractable) base iterator types
+    test(PC(s), s, 0);
+    test(PC(s), s+1, 1);
+    test(PC(s+1), s, -1);
+
+    // Test non-subtractable base iterator types
+    static_assert( HasMinus<std::reverse_iterator<int*>, std::reverse_iterator<int*> >::value, "");
+    static_assert( HasMinus<std::reverse_iterator<int*>, std::reverse_iterator<const int*> >::value, "");
+#if TEST_STD_VER >= 11
+    static_assert(!HasMinus<std::reverse_iterator<int*>, std::reverse_iterator<char*> >::value, "");
+    static_assert(!HasMinus<std::reverse_iterator<bidirectional_iterator<int*> >, std::reverse_iterator<bidirectional_iterator<int*> > >::value, "");
+#endif
+
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/plus.pass.cpp
new file mode 100644
index 0000000..aeb9f89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/reverse.iter.nonmember/plus.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// template <RandomAccessIterator Iterator>
+// reverse_iterator<Iter> operator+(Iter::difference_type n, const reverse_iterator<Iter>& x); // constexpr in C++17
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX17 void test(It i, typename std::iterator_traits<It>::difference_type n, It x) {
+    const std::reverse_iterator<It> r(i);
+    std::reverse_iterator<It> rr = n + r;
+    assert(rr.base() == x);
+}
+
+TEST_CONSTEXPR_CXX17 bool tests() {
+    const char* s = "1234567890";
+    test(random_access_iterator<const char*>(s+5), 5, random_access_iterator<const char*>(s));
+    test(s+5, 5, s);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 14
+    static_assert(tests(), "");
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/sized_sentinel.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/sized_sentinel.compile.pass.cpp
new file mode 100644
index 0000000..66e5aa6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/sized_sentinel.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// reverse_iterator
+
+#include <iterator>
+
+#include "test_iterators.h"
+
+template<class T> concept HasMinus = requires (T t) { t - t; };
+
+using sized_it = random_access_iterator<int*>;
+static_assert( std::sized_sentinel_for<sized_it, sized_it>);
+static_assert( std::sized_sentinel_for<std::reverse_iterator<sized_it>, std::reverse_iterator<sized_it>>);
+static_assert( HasMinus<std::reverse_iterator<sized_it>>);
+
+// Check that `sized_sentinel_for` is false for `reverse_iterator`s if it is false for the underlying iterators.
+using unsized_it = bidirectional_iterator<int*>;
+static_assert(!std::sized_sentinel_for<unsized_it, unsized_it>);
+static_assert(!std::sized_sentinel_for<std::reverse_iterator<unsized_it>, std::reverse_iterator<unsized_it>>);
+static_assert(!HasMinus<std::reverse_iterator<unsized_it>>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/types.compile.pass.cpp
new file mode 100644
index 0000000..20c3a15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/reverse.iterators/types.compile.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// reverse_iterator
+
+// Test nested types and data member:
+
+// template <BidirectionalIterator Iter>
+// class reverse_iterator {
+// protected:
+//   Iter current;
+// public:
+//   iterator<typename iterator_traits<Iterator>::iterator_category,
+//   typename iterator_traits<Iterator>::value_type,
+//   typename iterator_traits<Iterator>::difference_type,
+//   typename iterator_traits<Iterator>::pointer,
+//   typename iterator_traits<Iterator>::reference> {
+// };
+
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+struct find_current
+    : private std::reverse_iterator<It>
+{
+    void test() { (void)this->current; }
+};
+
+template <class It>
+void test() {
+  typedef std::reverse_iterator<It> R;
+  typedef std::iterator_traits<It> T;
+  find_current<It> q; q.test(); // Just test that we can access `.current` from derived classes
+  static_assert((std::is_same<typename R::iterator_type, It>::value), "");
+  static_assert((std::is_same<typename R::value_type, typename T::value_type>::value), "");
+  static_assert((std::is_same<typename R::difference_type, typename T::difference_type>::value), "");
+  static_assert((std::is_same<typename R::reference, typename T::reference>::value), "");
+  static_assert((std::is_same<typename R::pointer, typename std::iterator_traits<It>::pointer>::value), "");
+
+#if TEST_STD_VER <= 14
+  typedef std::iterator<typename T::iterator_category, typename T::value_type> iterator_base;
+  static_assert((std::is_base_of<iterator_base, R>::value), "");
+#endif
+#if TEST_STD_VER > 17
+  if constexpr (std::is_same_v<typename T::iterator_category, std::contiguous_iterator_tag>) {
+    static_assert((std::is_same<typename R::iterator_category, std::random_access_iterator_tag>::value), "");
+  } else {
+    static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
+  }
+#else
+  static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
+#endif
+}
+
+#if TEST_STD_VER > 17
+
+struct FooIter {
+  using iterator_category = std::bidirectional_iterator_tag;
+  using value_type = void*;
+  using difference_type = void*;
+  using pointer = void*;
+  using reference = int&;
+  int& operator*() const;
+};
+template <>
+struct std::indirectly_readable_traits<FooIter> {
+  using value_type = int;
+};
+template <>
+struct std::incrementable_traits<FooIter> {
+  using difference_type = char;
+};
+
+// Not using `FooIter::value_type`.
+static_assert(std::is_same_v<typename std::reverse_iterator<FooIter>::value_type, int>);
+// Not using `FooIter::difference_type`.
+static_assert(std::is_same_v<typename std::reverse_iterator<FooIter>::difference_type, char>);
+
+#endif
+
+struct BarIter {
+  bool& operator*() const;
+};
+template <>
+struct std::iterator_traits<BarIter> {
+  using difference_type = char;
+  using value_type = char;
+  using pointer = char*;
+  using reference = char&;
+  using iterator_category = std::bidirectional_iterator_tag;
+};
+
+#if TEST_STD_VER > 17
+  static_assert(std::is_same_v<typename std::reverse_iterator<BarIter>::reference, bool&>);
+#else
+  static_assert(std::is_same<typename std::reverse_iterator<BarIter>::reference, char&>::value, "");
+#endif
+
+void test_all() {
+  test<bidirectional_iterator<char*> >();
+  test<random_access_iterator<char*> >();
+  test<char*>();
+
+#if TEST_STD_VER > 17
+  test<contiguous_iterator<char*>>();
+  static_assert(std::is_same_v<typename std::reverse_iterator<bidirectional_iterator<char*>>::iterator_concept, std::bidirectional_iterator_tag>);
+  static_assert(std::is_same_v<typename std::reverse_iterator<random_access_iterator<char*>>::iterator_concept, std::random_access_iterator_tag>);
+  static_assert(std::is_same_v<typename std::reverse_iterator<cpp20_random_access_iterator<char*>>::iterator_concept, std::random_access_iterator_tag>);
+  static_assert(std::is_same_v<typename std::reverse_iterator<contiguous_iterator<char*>>::iterator_concept, std::random_access_iterator_tag>);
+  static_assert(std::is_same_v<typename std::reverse_iterator<char*>::iterator_concept, std::random_access_iterator_tag>);
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/unreachable.sentinel/unreachable_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/unreachable.sentinel/unreachable_sentinel.pass.cpp
new file mode 100644
index 0000000..7d37d9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/predef.iterators/unreachable.sentinel/unreachable_sentinel.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// struct unreachable_sentinel_t;
+// inline constexpr unreachable_sentinel_t unreachable_sentinel;
+
+#include <iterator>
+
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template<class T, class U>
+concept weakly_equality_comparable_with = requires(const T& t, const U& u) {
+  { t == u } -> std::same_as<bool>;
+  { t != u } -> std::same_as<bool>;
+  { u == t } -> std::same_as<bool>;
+  { u != t } -> std::same_as<bool>;
+};
+
+constexpr bool test() {
+  static_assert(std::is_empty_v<std::unreachable_sentinel_t>);
+  static_assert(std::semiregular<std::unreachable_sentinel_t>);
+
+  static_assert(std::same_as<decltype(std::unreachable_sentinel), const std::unreachable_sentinel_t>);
+
+  auto sentinel = std::unreachable_sentinel;
+  int i = 42;
+  assert(i != sentinel);
+  assert(sentinel != i);
+  assert(!(i == sentinel));
+  assert(!(sentinel == i));
+
+  assert(&i != sentinel);
+  assert(sentinel != &i);
+  assert(!(&i == sentinel));
+  assert(!(sentinel == &i));
+
+  int *p = nullptr;
+  assert(p != sentinel);
+  assert(sentinel != p);
+  assert(!(p == sentinel));
+  assert(!(sentinel == p));
+
+  static_assert( weakly_equality_comparable_with<std::unreachable_sentinel_t, int>);
+  static_assert( weakly_equality_comparable_with<std::unreachable_sentinel_t, int*>);
+  static_assert(!weakly_equality_comparable_with<std::unreachable_sentinel_t, void*>);
+  ASSERT_NOEXCEPT(sentinel == p);
+  ASSERT_NOEXCEPT(sentinel != p);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/copy.pass.cpp
new file mode 100644
index 0000000..d6a3b08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/copy.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// istream_iterator(const istream_iterator& x);
+//  C++17 says:  If is_trivially_copy_constructible_v<T> is true, then
+//     this constructor is a trivial copy constructor.
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istream_iterator<int> io;
+        std::istream_iterator<int> i = io;
+        assert(i == std::istream_iterator<int>());
+    }
+    {
+        std::istringstream inf(" 1 23");
+        std::istream_iterator<int> io(inf);
+        std::istream_iterator<int> i = io;
+        assert(i != std::istream_iterator<int>());
+        int j = 0;
+        j = *i;
+        assert(j == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.compile.fail.cpp
new file mode 100644
index 0000000..f9afb13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.compile.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <iterator>
+
+// class istream_iterator
+
+// constexpr istream_iterator();
+
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct S { S(); }; // not constexpr
+
+int main(int, char**)
+{
+  constexpr std::istream_iterator<S> it;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.pass.cpp
new file mode 100644
index 0000000..7273223
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// istream_iterator(); // constexpr since C++11
+// C++17 says: If is_trivially_default_constructible_v<T> is true, then this
+//    constructor is a constexpr constructor.
+
+#include <iterator>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+struct S { S(); }; // not constexpr
+
+#if TEST_STD_VER > 14
+template <typename T, bool isTrivial = std::is_trivially_default_constructible_v<T>>
+struct test_trivial {
+void operator ()() const {
+    constexpr std::istream_iterator<T> it;
+    (void)it;
+    }
+};
+
+template <typename T>
+struct test_trivial<T, false> {
+void operator ()() const {}
+};
+#endif
+
+
+int main(int, char**) {
+    {
+    typedef std::istream_iterator<int> T;
+    T it;
+    assert(it == T());
+#if TEST_STD_VER >= 11
+    constexpr T it2;
+    (void)it2;
+#endif
+    }
+
+#if TEST_STD_VER > 14
+    test_trivial<int>()();
+    test_trivial<char>()();
+    test_trivial<double>()();
+    test_trivial<S>()();
+    test_trivial<std::string>()();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default_sentinel_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default_sentinel_t.pass.cpp
new file mode 100644
index 0000000..e1fc85d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default_sentinel_t.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+//
+// constexpr istream_iterator(default_sentinel_t); // since C++20
+
+#include <iterator>
+#include <cassert>
+
+int main(int, char**) {
+  using T = std::istream_iterator<int>;
+
+  {
+    T it(std::default_sentinel);
+    assert(it == T());
+  }
+
+  {
+    T it = std::default_sentinel;
+    assert(it == T());
+  }
+
+  {
+    constexpr T it(std::default_sentinel);
+    (void)it;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/istream.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/istream.pass.cpp
new file mode 100644
index 0000000..bda4a18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/istream.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// istream_iterator(istream_type& s);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::istringstream inf(" 1 23");
+    std::istream_iterator<int> i(inf);
+    assert(i != std::istream_iterator<int>());
+    assert(inf.peek() == ' ');
+    assert(inf.good());
+    int j = 0;
+    inf >> j;
+    assert(j == 23);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/arrow.pass.cpp
new file mode 100644
index 0000000..bcb5e03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/arrow.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// const T* operator->() const;
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    double d_;
+    int i_;
+};
+
+void operator&(A const&) {}
+
+std::istream& operator>>(std::istream& is, A& a)
+{
+    return is >> a.d_ >> a.i_;
+}
+
+int main(int, char**)
+{
+    std::istringstream inf("1.5  23 ");
+    std::istream_iterator<A> i(inf);
+    assert(i->d_ == 1.5);
+    assert(i->i_ == 23);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/dereference.pass.cpp
new file mode 100644
index 0000000..7fda2ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/dereference.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// const T& operator*() const;
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::istringstream inf(" 1 23");
+    std::istream_iterator<int> i(inf);
+    int j = 0;
+    j = *i;
+    assert(j == 1);
+    j = *i;
+    assert(j == 1);
+    ++i;
+    j = *i;
+    assert(j == 23);
+    j = *i;
+    assert(j == 23);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/equal.pass.cpp
new file mode 100644
index 0000000..6ca6ce6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/equal.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// template <class T, class charT, class traits, class Distance>
+//   bool operator==(const istream_iterator<T,charT,traits,Distance> &x,
+//                   const istream_iterator<T,charT,traits,Distance> &y);
+//
+// template <class T, class charT, class traits, class Distance>
+//   bool operator!=(const istream_iterator<T,charT,traits,Distance> &x,
+//                   const istream_iterator<T,charT,traits,Distance> &y);
+//
+// friend bool operator==(const istream_iterator& i, default_sentinel_t); // since C++20
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    std::istringstream inf1(" 1 23");
+    std::istringstream inf2(" 1 23");
+    std::istream_iterator<int> i1(inf1);
+    std::istream_iterator<int> i2(inf1);
+    std::istream_iterator<int> i3(inf2);
+    std::istream_iterator<int> i4;
+    std::istream_iterator<int> i5;
+    assert(i1 == i1);
+    assert(i1 == i2);
+    assert(i1 != i3);
+    assert(i1 != i4);
+    assert(i1 != i5);
+
+    assert(i2 == i2);
+    assert(i2 != i3);
+    assert(i2 != i4);
+    assert(i2 != i5);
+
+    assert(i3 == i3);
+    assert(i3 != i4);
+    assert(i3 != i5);
+
+    assert(i4 == i4);
+    assert(i4 == i5);
+
+    assert(std::operator==(i1, i2));
+#if TEST_STD_VER <= 17
+    assert(std::operator!=(i1, i3));
+#endif
+  }
+
+#if TEST_STD_VER > 17
+  {
+    std::istream_iterator<int> i1;
+    std::istream_iterator<int> i2(std::default_sentinel);
+    assert(i1 == i2);
+
+    assert(i1 == std::default_sentinel);
+    assert(i2 == std::default_sentinel);
+    assert(std::default_sentinel == i1);
+    assert(std::default_sentinel == i2);
+    assert(!(i1 != std::default_sentinel));
+    assert(!(i2 != std::default_sentinel));
+    assert(!(std::default_sentinel != i1));
+    assert(!(std::default_sentinel != i2));
+
+    std::istringstream stream(" 1 23");
+    std::istream_iterator<int> i3(stream);
+
+    assert(!(i3 == std::default_sentinel));
+    assert(!(std::default_sentinel == i3));
+    assert(i3 != std::default_sentinel);
+    assert(std::default_sentinel != i3);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/post_increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/post_increment.pass.cpp
new file mode 100644
index 0000000..80c19a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/post_increment.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// istream_iterator operator++(int);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::istringstream inf(" 1 23");
+    std::istream_iterator<int> i(inf);
+    std::istream_iterator<int> icopy = i++;
+    assert(icopy == i);
+    int j = 0;
+    j = *i;
+    assert(j == 23);
+    j = 0;
+    j = *icopy;
+    assert(j == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/pre_increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/pre_increment.pass.cpp
new file mode 100644
index 0000000..5637010
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.ops/pre_increment.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class istream_iterator
+
+// istream_iterator& operator++();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::istringstream inf(" 1 23");
+    std::istream_iterator<int> i(inf);
+    std::istream_iterator<int>& iref = ++i;
+    assert(&iref == &i);
+    int j = 0;
+    j = *i;
+    assert(j == 23);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..2f8a0b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// istream_iterator
+
+#include <iterator>
+
+#include <iosfwd>
+
+using iterator = std::istream_iterator<int, std::istream>;
+static_assert(std::indirectly_readable<iterator>);
+static_assert(!std::indirectly_writable<iterator, int>);
+static_assert(std::incrementable<iterator>);
+static_assert(std::input_or_output_iterator<iterator>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(std::input_iterator<iterator>);
+static_assert(!std::indirectly_movable<int*, iterator>);
+static_assert(!std::indirectly_movable_storable<int*, iterator>);
+static_assert(!std::indirectly_copyable<int*, iterator>);
+static_assert(!std::indirectly_copyable_storable<int*, iterator>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/types.pass.cpp
new file mode 100644
index 0000000..33b16c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istream.iterator/types.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <class T, class charT = char, class traits = char_traits<charT>,
+//           class Distance = ptrdiff_t>
+// class istream_iterator
+//  : public iterator<input_iterator_tag, T, Distance, const T*, const T&> // until C++17
+// {
+// public:
+//     typedef input_iterator_tag           iterator_category;
+//     typedef T                            value_type;
+//     typedef Distance                     difference_type;
+//     typedef const T*                     pointer;
+//     typedef const T&                     reference;
+//
+//     typedef basic_istream<charT, Traits> istream_type;
+//     typedef charT                        char_type;
+//     typedef traits                       traits_type;
+//     typedef basic_istream<charT, traits> istream_type;
+//     ...
+//
+// Before C++17, we have:
+//   If T is a literal type, then the default constructor shall be a constexpr constructor.
+//   If T is a literal type, then this constructor shall be a trivial copy constructor.
+//   If T is a literal type, then this destructor shall be a trivial destructor.
+// C++17 says:
+//   If is_trivially_default_constructible_v<T> is true, then
+//       this constructor (the default ctor) is a constexpr constructor.
+//   If is_trivially_copy_constructible_v<T> is true, then
+//       this constructor (the copy ctor) is a trivial copy constructor.
+//   If is_trivially_destructible_v<T> is true, then this
+//       destructor is a trivial destructor.
+//  Testing the C++17 ctors for this are in the ctor tests.
+
+#include <iterator>
+#include <type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::istream_iterator<double> I1; // double is trivially destructible
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::input_iterator_tag, double, std::ptrdiff_t, double const*, double const&> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I1>::value), "");
+#endif
+    static_assert((std::is_same<I1::iterator_category, std::input_iterator_tag>::value), "");
+    static_assert((std::is_same<I1::value_type, double>::value), "");
+    static_assert((std::is_same<I1::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<I1::pointer, const double*>::value), "");
+    static_assert((std::is_same<I1::reference, const double&>::value), "");
+    static_assert((std::is_same<I1::char_type, char>::value), "");
+    static_assert((std::is_same<I1::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<I1::istream_type, std::istream>::value), "");
+    static_assert( std::is_trivially_copy_constructible<I1>::value, "");
+    static_assert( std::is_trivially_destructible<I1>::value, "");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    typedef std::istream_iterator<unsigned, wchar_t> I2; // unsigned is trivially destructible
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::input_iterator_tag, unsigned, std::ptrdiff_t, const unsigned*, const unsigned&> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I2>::value), "");
+#endif
+    static_assert((std::is_same<I2::iterator_category, std::input_iterator_tag>::value), "");
+    static_assert((std::is_same<I2::value_type, unsigned>::value), "");
+    static_assert((std::is_same<I2::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<I2::pointer, const unsigned*>::value), "");
+    static_assert((std::is_same<I2::reference, const unsigned&>::value), "");
+    static_assert((std::is_same<I2::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<I2::traits_type, std::char_traits<wchar_t> >::value), "");
+    static_assert((std::is_same<I2::istream_type, std::wistream>::value), "");
+    static_assert( std::is_trivially_copy_constructible<I2>::value, "");
+    static_assert( std::is_trivially_destructible<I2>::value, "");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    typedef std::istream_iterator<std::string> I3; // string is NOT trivially destructible
+    static_assert(!std::is_trivially_copy_constructible<I3>::value, "");
+    static_assert(!std::is_trivially_destructible<I3>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default.pass.cpp
new file mode 100644
index 0000000..1e8baea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+//
+// istreambuf_iterator() noexcept; // constexpr since C++11
+//
+// All specializations of istreambuf_iterator shall have a trivial copy constructor,
+//    a constexpr default constructor and a trivial destructor.
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    typedef std::istreambuf_iterator<char> T;
+    T it;
+    assert(it == T());
+#if TEST_STD_VER >= 11
+    constexpr T it2;
+    (void)it2;
+#endif
+
+    ASSERT_NOEXCEPT(T());
+  }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    typedef std::istreambuf_iterator<wchar_t> T;
+    T it;
+    assert(it == T());
+#if TEST_STD_VER >= 11
+    constexpr T it2;
+    (void)it2;
+#endif
+
+    ASSERT_NOEXCEPT(T());
+  }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default_sentinel_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default_sentinel_t.pass.cpp
new file mode 100644
index 0000000..b2e6dfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/default_sentinel_t.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <iterator>
+
+// constexpr istreambuf_iterator(default_sentinel_t) noexcept; // since C++20
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  using T = std::istreambuf_iterator<char>;
+
+  {
+    T it(std::default_sentinel);
+    assert(it == T());
+  }
+
+  {
+    T it = std::default_sentinel;
+    assert(it == T());
+  }
+
+  {
+    constexpr T it(std::default_sentinel);
+    (void)it;
+  }
+
+  ASSERT_NOEXCEPT(T(std::default_sentinel));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/istream.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/istream.pass.cpp
new file mode 100644
index 0000000..db99f46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/istream.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// istreambuf_iterator(basic_istream<charT,traits>& s) throw();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf;
+        std::istreambuf_iterator<char> i(inf);
+        assert(i == std::istreambuf_iterator<char>());
+    }
+    {
+        std::istringstream inf("a");
+        std::istreambuf_iterator<char> i(inf);
+        assert(i != std::istreambuf_iterator<char>());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf;
+        std::istreambuf_iterator<wchar_t> i(inf);
+        assert(i == std::istreambuf_iterator<wchar_t>());
+    }
+    {
+        std::wistringstream inf(L"a");
+        std::istreambuf_iterator<wchar_t> i(inf);
+        assert(i != std::istreambuf_iterator<wchar_t>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/proxy.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/proxy.pass.cpp
new file mode 100644
index 0000000..4ad6c38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/proxy.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// istreambuf_iterator(const proxy& p) throw();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf("abc");
+        std::istreambuf_iterator<char> j(inf);
+        std::istreambuf_iterator<char> i = j++;
+        assert(i != std::istreambuf_iterator<char>());
+        assert(*i == 'b');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf(L"abc");
+        std::istreambuf_iterator<wchar_t> j(inf);
+        std::istreambuf_iterator<wchar_t> i = j++;
+        assert(i != std::istreambuf_iterator<wchar_t>());
+        assert(*i == L'b');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/streambuf.pass.cpp
new file mode 100644
index 0000000..bb83a55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator.cons/streambuf.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// istreambuf_iterator(basic_streambuf<charT,traits>* s) throw();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istreambuf_iterator<char> i(nullptr);
+        assert(i == std::istreambuf_iterator<char>());
+    }
+    {
+        std::istringstream inf;
+        std::istreambuf_iterator<char> i(inf.rdbuf());
+        assert(i == std::istreambuf_iterator<char>());
+    }
+    {
+        std::istringstream inf("a");
+        std::istreambuf_iterator<char> i(inf.rdbuf());
+        assert(i != std::istreambuf_iterator<char>());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::istreambuf_iterator<wchar_t> i(nullptr);
+        assert(i == std::istreambuf_iterator<wchar_t>());
+    }
+    {
+        std::wistringstream inf;
+        std::istreambuf_iterator<wchar_t> i(inf.rdbuf());
+        assert(i == std::istreambuf_iterator<wchar_t>());
+    }
+    {
+        std::wistringstream inf(L"a");
+        std::istreambuf_iterator<wchar_t> i(inf.rdbuf());
+        assert(i != std::istreambuf_iterator<wchar_t>());
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_equal/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_equal/equal.pass.cpp
new file mode 100644
index 0000000..ba6e2b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_equal/equal.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// bool equal(istreambuf_iterator<charT,traits>& b) const;
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf1("abc");
+        std::istringstream inf2("def");
+        std::istreambuf_iterator<char> i1(inf1);
+        std::istreambuf_iterator<char> i2(inf2);
+        std::istreambuf_iterator<char> i3;
+        std::istreambuf_iterator<char> i4;
+        std::istreambuf_iterator<char> i5(nullptr);
+
+        assert( i1.equal(i1));
+        assert( i1.equal(i2));
+        assert(!i1.equal(i3));
+        assert(!i1.equal(i4));
+        assert(!i1.equal(i5));
+
+        assert( i2.equal(i1));
+        assert( i2.equal(i2));
+        assert(!i2.equal(i3));
+        assert(!i2.equal(i4));
+        assert(!i2.equal(i5));
+
+        assert(!i3.equal(i1));
+        assert(!i3.equal(i2));
+        assert( i3.equal(i3));
+        assert( i3.equal(i4));
+        assert( i3.equal(i5));
+
+        assert(!i4.equal(i1));
+        assert(!i4.equal(i2));
+        assert( i4.equal(i3));
+        assert( i4.equal(i4));
+        assert( i4.equal(i5));
+
+        assert(!i5.equal(i1));
+        assert(!i5.equal(i2));
+        assert( i5.equal(i3));
+        assert( i5.equal(i4));
+        assert( i5.equal(i5));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf1(L"abc");
+        std::wistringstream inf2(L"def");
+        std::istreambuf_iterator<wchar_t> i1(inf1);
+        std::istreambuf_iterator<wchar_t> i2(inf2);
+        std::istreambuf_iterator<wchar_t> i3;
+        std::istreambuf_iterator<wchar_t> i4;
+        std::istreambuf_iterator<wchar_t> i5(nullptr);
+
+        assert( i1.equal(i1));
+        assert( i1.equal(i2));
+        assert(!i1.equal(i3));
+        assert(!i1.equal(i4));
+        assert(!i1.equal(i5));
+
+        assert( i2.equal(i1));
+        assert( i2.equal(i2));
+        assert(!i2.equal(i3));
+        assert(!i2.equal(i4));
+        assert(!i2.equal(i5));
+
+        assert(!i3.equal(i1));
+        assert(!i3.equal(i2));
+        assert( i3.equal(i3));
+        assert( i3.equal(i4));
+        assert( i3.equal(i5));
+
+        assert(!i4.equal(i1));
+        assert(!i4.equal(i2));
+        assert( i4.equal(i3));
+        assert( i4.equal(i4));
+        assert( i4.equal(i5));
+
+        assert(!i5.equal(i1));
+        assert(!i5.equal(i2));
+        assert( i5.equal(i3));
+        assert( i5.equal(i4));
+        assert( i5.equal(i5));
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op!=/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op!=/not_equal.pass.cpp
new file mode 100644
index 0000000..80520e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op!=/not_equal.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// template <class charT, class traits>
+//   bool operator!=(const istreambuf_iterator<charT,traits>& a,
+//                   const istreambuf_iterator<charT,traits>& b);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    std::istringstream inf1("abc");
+    std::istringstream inf2("def");
+    std::istreambuf_iterator<char> i1(inf1);
+    std::istreambuf_iterator<char> i2(inf2);
+    std::istreambuf_iterator<char> i3;
+    std::istreambuf_iterator<char> i4;
+    std::istreambuf_iterator<char> i5(nullptr);
+
+    assert(!(i1 != i1));
+    assert(!(i1 != i2));
+    assert( (i1 != i3));
+    assert( (i1 != i4));
+    assert( (i1 != i5));
+
+    assert(!(i2 != i1));
+    assert(!(i2 != i2));
+    assert( (i2 != i3));
+    assert( (i2 != i4));
+    assert( (i2 != i5));
+
+    assert( (i3 != i1));
+    assert( (i3 != i2));
+    assert(!(i3 != i3));
+    assert(!(i3 != i4));
+    assert(!(i3 != i5));
+
+    assert( (i4 != i1));
+    assert( (i4 != i2));
+    assert(!(i4 != i3));
+    assert(!(i4 != i4));
+    assert(!(i4 != i5));
+
+    assert( (i5 != i1));
+    assert( (i5 != i2));
+    assert(!(i5 != i3));
+    assert(!(i5 != i4));
+    assert(!(i5 != i5));
+  }
+
+#if TEST_STD_VER > 17
+  {
+    std::istreambuf_iterator<char> i1;
+    std::istreambuf_iterator<char> i2(std::default_sentinel);
+    assert(i1 == i2);
+
+    assert(!(i1 != std::default_sentinel));
+    assert(!(i2 != std::default_sentinel));
+    assert(!(std::default_sentinel != i1));
+    assert(!(std::default_sentinel != i2));
+
+    std::istringstream stream(" 1 23");
+    std::istreambuf_iterator<char> i3(stream);
+
+    assert(i3 != std::default_sentinel);
+    assert(std::default_sentinel != i3);
+  }
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wistringstream inf1(L"abc");
+    std::wistringstream inf2(L"def");
+    std::istreambuf_iterator<wchar_t> i1(inf1);
+    std::istreambuf_iterator<wchar_t> i2(inf2);
+    std::istreambuf_iterator<wchar_t> i3;
+    std::istreambuf_iterator<wchar_t> i4;
+    std::istreambuf_iterator<wchar_t> i5(nullptr);
+
+    assert(!(i1 != i1));
+    assert(!(i1 != i2));
+    assert( (i1 != i3));
+    assert( (i1 != i4));
+    assert( (i1 != i5));
+
+    assert(!(i2 != i1));
+    assert(!(i2 != i2));
+    assert( (i2 != i3));
+    assert( (i2 != i4));
+    assert( (i2 != i5));
+
+    assert( (i3 != i1));
+    assert( (i3 != i2));
+    assert(!(i3 != i3));
+    assert(!(i3 != i4));
+    assert(!(i3 != i5));
+
+    assert( (i4 != i1));
+    assert( (i4 != i2));
+    assert(!(i4 != i3));
+    assert(!(i4 != i4));
+    assert(!(i4 != i5));
+
+    assert( (i5 != i1));
+    assert( (i5 != i2));
+    assert(!(i5 != i3));
+    assert(!(i5 != i4));
+    assert(!(i5 != i5));
+  }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op++/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op++/dereference.pass.cpp
new file mode 100644
index 0000000..431e8d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op++/dereference.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// charT operator*() const
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf("abc");
+        std::istreambuf_iterator<char> i(inf);
+        assert(*i == 'a');
+        ++i;
+        assert(*i == 'b');
+        ++i;
+        assert(*i == 'c');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf(L"abc");
+        std::istreambuf_iterator<wchar_t> i(inf);
+        assert(*i == L'a');
+        ++i;
+        assert(*i == L'b');
+        ++i;
+        assert(*i == L'c');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op==/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op==/equal.pass.cpp
new file mode 100644
index 0000000..e0dda2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op==/equal.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// template <class charT, class traits>
+//   bool operator==(const istreambuf_iterator<charT,traits>& a,
+//                   const istreambuf_iterator<charT,traits>& b);
+//
+// friend bool operator==(const istreambuf_iterator& i, default_sentinel_t s); // since C++20
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    std::istringstream inf1("abc");
+    std::istringstream inf2("def");
+    std::istreambuf_iterator<char> i1(inf1);
+    std::istreambuf_iterator<char> i2(inf2);
+    std::istreambuf_iterator<char> i3;
+    std::istreambuf_iterator<char> i4;
+    std::istreambuf_iterator<char> i5(nullptr);
+
+    assert( (i1 == i1));
+    assert( (i1 == i2));
+    assert(!(i1 == i3));
+    assert(!(i1 == i4));
+    assert(!(i1 == i5));
+
+    assert( (i2 == i1));
+    assert( (i2 == i2));
+    assert(!(i2 == i3));
+    assert(!(i2 == i4));
+    assert(!(i2 == i5));
+
+    assert(!(i3 == i1));
+    assert(!(i3 == i2));
+    assert( (i3 == i3));
+    assert( (i3 == i4));
+    assert( (i3 == i5));
+
+    assert(!(i4 == i1));
+    assert(!(i4 == i2));
+    assert( (i4 == i3));
+    assert( (i4 == i4));
+    assert( (i4 == i5));
+
+    assert(!(i5 == i1));
+    assert(!(i5 == i2));
+    assert( (i5 == i3));
+    assert( (i5 == i4));
+    assert( (i5 == i5));
+  }
+
+#if TEST_STD_VER > 17
+  {
+    std::istreambuf_iterator<char> i1;
+    std::istreambuf_iterator<char> i2(std::default_sentinel);
+    assert(i1 == i2);
+
+    assert(i1 == std::default_sentinel);
+    assert(i2 == std::default_sentinel);
+    assert(std::default_sentinel == i1);
+    assert(std::default_sentinel == i2);
+
+    std::istringstream stream(" 1 23");
+    std::istreambuf_iterator<char> i3(stream);
+
+    assert(!(i3 == std::default_sentinel));
+    assert(!(std::default_sentinel == i3));
+  }
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wistringstream inf1(L"abc");
+    std::wistringstream inf2(L"def");
+    std::istreambuf_iterator<wchar_t> i1(inf1);
+    std::istreambuf_iterator<wchar_t> i2(inf2);
+    std::istreambuf_iterator<wchar_t> i3;
+    std::istreambuf_iterator<wchar_t> i4;
+    std::istreambuf_iterator<wchar_t> i5(nullptr);
+
+    assert( (i1 == i1));
+    assert( (i1 == i2));
+    assert(!(i1 == i3));
+    assert(!(i1 == i4));
+    assert(!(i1 == i5));
+
+    assert( (i2 == i1));
+    assert( (i2 == i2));
+    assert(!(i2 == i3));
+    assert(!(i2 == i4));
+    assert(!(i2 == i5));
+
+    assert(!(i3 == i1));
+    assert(!(i3 == i2));
+    assert( (i3 == i3));
+    assert( (i3 == i4));
+    assert( (i3 == i5));
+
+    assert(!(i4 == i1));
+    assert(!(i4 == i2));
+    assert( (i4 == i3));
+    assert( (i4 == i4));
+    assert( (i4 == i5));
+
+    assert(!(i5 == i1));
+    assert(!(i5 == i2));
+    assert( (i5 == i3));
+    assert( (i5 == i4));
+    assert( (i5 == i5));
+  }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op_astrk/post_increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op_astrk/post_increment.pass.cpp
new file mode 100644
index 0000000..c325e45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op_astrk/post_increment.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// proxy istreambuf_iterator<charT,traits>::operator++(int);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf("abc");
+        std::istreambuf_iterator<char> i(inf);
+        assert(*i++ == 'a');
+        assert(*i++ == 'b');
+        assert(*i++ == 'c');
+        assert(i == std::istreambuf_iterator<char>());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf(L"abc");
+        std::istreambuf_iterator<wchar_t> i(inf);
+        assert(*i++ == L'a');
+        assert(*i++ == L'b');
+        assert(*i++ == L'c');
+        assert(i == std::istreambuf_iterator<wchar_t>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op_astrk/pre_increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op_astrk/pre_increment.pass.cpp
new file mode 100644
index 0000000..c2e28ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_op_astrk/pre_increment.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// istreambuf_iterator
+
+// istreambuf_iterator<charT,traits>&
+//   istreambuf_iterator<charT,traits>::operator++();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf("abc");
+        std::istreambuf_iterator<char> i(inf);
+        assert(*i == 'a');
+        assert(*++i == 'b');
+        assert(*++i == 'c');
+        assert(++i == std::istreambuf_iterator<char>());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf(L"abc");
+        std::istreambuf_iterator<wchar_t> i(inf);
+        assert(*i == L'a');
+        assert(*++i == L'b');
+        assert(*++i == L'c');
+        assert(++i == std::istreambuf_iterator<wchar_t>());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_proxy/proxy.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_proxy/proxy.pass.cpp
new file mode 100644
index 0000000..b70dab2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/istreambuf.iterator_proxy/proxy.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class charT, class traits = char_traits<charT> >
+// class istreambuf_iterator {
+// public:
+//     ...
+//     proxy operator++(int);
+
+// class proxy
+// {
+// public:
+//     charT operator*();
+// };
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream inf("abc");
+        std::istreambuf_iterator<char> i(inf);
+        assert(*i++ == 'a');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream inf(L"abc");
+        std::istreambuf_iterator<wchar_t> i(inf);
+        assert(*i++ == L'a');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..3a1610f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// istreambuf_iterator
+
+#include <iterator>
+
+#include <istream>
+#include <string>
+
+using iterator = std::istreambuf_iterator<char>;
+
+static_assert(std::input_iterator<iterator>);
+static_assert(!std::forward_iterator<iterator>);
+static_assert(!std::indirectly_writable<iterator, char>);
+static_assert(!std::incrementable<iterator>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(std::indirectly_movable<iterator, char*>);
+static_assert(std::indirectly_movable_storable<iterator, char*>);
+static_assert(std::indirectly_copyable<iterator, char*>);
+static_assert(std::indirectly_copyable_storable<iterator, char*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/types.pass.cpp
new file mode 100644
index 0000000..278470e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/istreambuf.iterator/types.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template<class charT, class traits = char_traits<charT> >
+// class istreambuf_iterator
+//  : public iterator<input_iterator_tag, charT, traits::off_type, unspecified, charT> // until C++17
+// {
+// public:
+//     typedef input_iterator_tag             iterator_category;
+//     typedef charT                          value_type;
+//     typedef traits::off_type               difference_type;
+//     typedef unspecified                    pointer;
+//     typedef charT                          reference;
+//
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef traits::int_type               int_type;
+//     typedef basic_streambuf<charT, traits> streambuf_type;
+//     typedef basic_istream<charT, traits>   istream_type;
+//     ...
+//
+// All specializations of istreambuf_iterator shall have a trivial copy constructor,
+//    a constexpr default constructor and a trivial destructor.
+
+#include <iterator>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::istreambuf_iterator<char> I1;
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::input_iterator_tag, char, std::char_traits<char>::off_type, char*, char> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I1>::value), "");
+#endif
+    static_assert((std::is_same<I1::iterator_category, std::input_iterator_tag>::value), "");
+    static_assert((std::is_same<I1::value_type, char>::value), "");
+    static_assert((std::is_same<I1::difference_type, std::char_traits<char>::off_type>::value), "");
+    LIBCPP_STATIC_ASSERT((std::is_same<I1::pointer, char*>::value), "");
+    static_assert((std::is_same<I1::reference, char>::value), "");
+    static_assert((std::is_same<I1::char_type, char>::value), "");
+    static_assert((std::is_same<I1::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<I1::int_type, I1::traits_type::int_type>::value), "");
+    static_assert((std::is_same<I1::streambuf_type, std::streambuf>::value), "");
+    static_assert((std::is_same<I1::istream_type, std::istream>::value), "");
+    static_assert((std::is_nothrow_default_constructible<I1>::value), "" );
+    static_assert((std::is_trivially_copy_constructible<I1>::value), "" );
+    static_assert((std::is_trivially_destructible<I1>::value), "" );
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    typedef std::istreambuf_iterator<wchar_t> I2;
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::input_iterator_tag, wchar_t, std::char_traits<wchar_t>::off_type, wchar_t*, wchar_t> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I2>::value), "");
+#endif
+    static_assert((std::is_same<I2::iterator_category, std::input_iterator_tag>::value), "");
+    static_assert((std::is_same<I2::value_type, wchar_t>::value), "");
+    static_assert((std::is_same<I2::difference_type, std::char_traits<wchar_t>::off_type>::value), "");
+    LIBCPP_STATIC_ASSERT((std::is_same<I2::pointer, wchar_t*>::value), "");
+    static_assert((std::is_same<I2::reference, wchar_t>::value), "");
+    static_assert((std::is_same<I2::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<I2::traits_type, std::char_traits<wchar_t> >::value), "");
+    static_assert((std::is_same<I2::int_type, I2::traits_type::int_type>::value), "");
+    static_assert((std::is_same<I2::streambuf_type, std::wstreambuf>::value), "");
+    static_assert((std::is_same<I2::istream_type, std::wistream>::value), "");
+    static_assert((std::is_nothrow_default_constructible<I2>::value), "" );
+    static_assert((std::is_trivially_copy_constructible<I2>::value), "" );
+    static_assert((std::is_trivially_destructible<I2>::value), "" );
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/lit.local.cfg
new file mode 100644
index 0000000..504efc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/lit.local.cfg
@@ -0,0 +1,3 @@
+# stream iterators rely on the streams library, which requires localization
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..b18d1e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ostream_iterator
+
+#include <iterator>
+
+#include <iosfwd>
+
+using iterator = std::ostream_iterator<int, std::ostream>;
+static_assert(!std::indirectly_readable<iterator>);
+static_assert(std::indirectly_writable<iterator, int>);
+static_assert(std::weakly_incrementable<iterator>);
+static_assert(std::input_or_output_iterator<iterator>);
+static_assert(!std::sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::input_iterator<iterator>);
+static_assert(std::indirectly_movable<int*, iterator>);
+static_assert(std::indirectly_movable_storable<int*, iterator>);
+static_assert(std::indirectly_copyable<int*, iterator>);
+static_assert(std::indirectly_copyable_storable<int*, iterator>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/copy.pass.cpp
new file mode 100644
index 0000000..bb1354b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/copy.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostream_iterator
+
+// ostream_iterator(const ostream_iterator& x);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ostringstream outf;
+    std::ostream_iterator<int> i(outf);
+    std::ostream_iterator<int> j = i;
+    assert(outf.good());
+    ((void)j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/ostream.pass.cpp
new file mode 100644
index 0000000..3c34608
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/ostream.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostream_iterator
+
+// ostream_iterator(ostream_type& s);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct MyTraits : std::char_traits<char> {};
+
+typedef std::basic_ostringstream<char, MyTraits> StringStream;
+typedef std::basic_ostream<char, MyTraits> BasicStream;
+
+void operator&(BasicStream const&) {}
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostream_iterator<int> i(outf);
+        assert(outf.good());
+    }
+    {
+        StringStream outf;
+        std::ostream_iterator<int, char, MyTraits> i(outf);
+        assert(outf.good());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/ostream_delim.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/ostream_delim.pass.cpp
new file mode 100644
index 0000000..f63aa88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.cons.des/ostream_delim.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostream_iterator
+
+// ostream_iterator(ostream_type& s, const charT* delimiter);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+struct MyTraits : std::char_traits<char> {};
+
+typedef std::basic_ostringstream<char, MyTraits> StringStream;
+typedef std::basic_ostream<char, MyTraits> BasicStream;
+
+void operator&(BasicStream const&) {}
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostream_iterator<int> i(outf, ", ");
+        assert(outf.good());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostream_iterator<double, wchar_t> i(outf, L", ");
+        assert(outf.good());
+    }
+#endif
+    {
+        StringStream outf;
+        std::ostream_iterator<int, char, MyTraits> i(outf, ", ");
+        assert(outf.good());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/assign_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/assign_t.pass.cpp
new file mode 100644
index 0000000..4e1a4d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/assign_t.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostream_iterator
+
+// ostream_iterator& operator=(const T& value);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wliteral-conversion")
+TEST_MSVC_DIAGNOSTIC_IGNORED(4244) // conversion from 'X' to 'Y', possible loss of data
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostream_iterator<int> i(outf);
+        i = 2.4;
+        assert(outf.str() == "2");
+    }
+    {
+        std::ostringstream outf;
+        std::ostream_iterator<int> i(outf, ", ");
+        i = 2.4;
+        assert(outf.str() == "2, ");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostream_iterator<int, wchar_t> i(outf);
+        i = 2.4;
+        assert(outf.str() == L"2");
+    }
+    {
+        std::wostringstream outf;
+        std::ostream_iterator<int, wchar_t> i(outf, L", ");
+        i = 2.4;
+        assert(outf.str() == L"2, ");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/dereference.pass.cpp
new file mode 100644
index 0000000..67d8241
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/dereference.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostream_iterator
+
+// ostream_iterator& operator*() const;
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ostringstream os;
+    std::ostream_iterator<int> i(os);
+    std::ostream_iterator<int>& iref = *i;
+    assert(&iref == &i);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/increment.pass.cpp
new file mode 100644
index 0000000..17169bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/ostream.iterator.ops/increment.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostream_iterator
+
+// ostream_iterator& operator++();
+// ostream_iterator& operator++(int);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ostringstream os;
+    std::ostream_iterator<int> i(os);
+    std::ostream_iterator<int>& iref1 = ++i;
+    assert(&iref1 == &i);
+    std::ostream_iterator<int>& iref2 = i++;
+    assert(&iref2 == &i);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/types.pass.cpp
new file mode 100644
index 0000000..b2f5b8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostream.iterator/types.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <class T, class charT = char, class traits = char_traits<charT>,
+//           class Distance = ptrdiff_t>
+// class ostream_iterator
+//  : public iterator<output_iterator_tag, void, void, void, void> // until C++17
+// {
+// public:
+//     typedef output_iterator_tag          iterator_category;
+//     typedef void                         value_type;
+//     typedef void                         difference_type; // until C++20
+//     typedef ptrdiff_t                    difference_type; // since C++20
+//     typedef void                         pointer;
+//     typedef void                         reference;
+//
+//     typedef charT                        char_type;
+//     typedef traits                       traits_type;
+//     typedef basic_ostream<charT, traits> ostream_type;
+//     ...
+
+#include <cstddef>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::ostream_iterator<double> I1;
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I1>::value), "");
+#endif
+    static_assert((std::is_same<I1::iterator_category, std::output_iterator_tag>::value), "");
+    static_assert((std::is_same<I1::value_type, void>::value), "");
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<I1::difference_type, void>::value), "");
+#else
+    static_assert((std::is_same<I1::difference_type, std::ptrdiff_t>::value), "");
+#endif
+    static_assert((std::is_same<I1::pointer, void>::value), "");
+    static_assert((std::is_same<I1::reference, void>::value), "");
+    static_assert((std::is_same<I1::char_type, char>::value), "");
+    static_assert((std::is_same<I1::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<I1::ostream_type, std::ostream>::value), "");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    typedef std::ostream_iterator<unsigned, wchar_t> I2;
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I2>::value), "");
+#endif
+    static_assert((std::is_same<I2::iterator_category, std::output_iterator_tag>::value), "");
+    static_assert((std::is_same<I2::value_type, void>::value), "");
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<I2::difference_type, void>::value), "");
+#else
+    static_assert((std::is_same<I2::difference_type, std::ptrdiff_t>::value), "");
+#endif
+    static_assert((std::is_same<I2::pointer, void>::value), "");
+    static_assert((std::is_same<I2::reference, void>::value), "");
+    static_assert((std::is_same<I2::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<I2::traits_type, std::char_traits<wchar_t> >::value), "");
+    static_assert((std::is_same<I2::ostream_type, std::wostream>::value), "");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..355126b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// ostreambuf_iterator
+
+#include <iterator>
+
+#include <ostream>
+#include <string>
+
+using iterator = std::ostreambuf_iterator<char>;
+static_assert(!std::indirectly_readable<iterator>);
+static_assert(std::indirectly_writable<iterator, char>);
+static_assert(std::weakly_incrementable<iterator>);
+static_assert(std::input_or_output_iterator<iterator>);
+static_assert(!std::sentinel_for<iterator, iterator>);
+static_assert(!std::sized_sentinel_for<iterator, iterator>);
+static_assert(!std::input_iterator<iterator>);
+static_assert(std::indirectly_movable<char*, iterator>);
+static_assert(std::indirectly_movable_storable<char*, iterator>);
+static_assert(std::indirectly_copyable<char*, iterator>);
+static_assert(std::indirectly_copyable_storable<char*, iterator>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.cons/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.cons/ostream.pass.cpp
new file mode 100644
index 0000000..12d1756
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.cons/ostream.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// ostreambuf_iterator(ostream_type& s) throw();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostreambuf_iterator<char> i(outf);
+        assert(!i.failed());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostreambuf_iterator<wchar_t> i(outf);
+        assert(!i.failed());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.cons/streambuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.cons/streambuf.pass.cpp
new file mode 100644
index 0000000..9d534e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.cons/streambuf.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// ostreambuf_iterator(streambuf_type* s) throw();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostreambuf_iterator<char> i(outf.rdbuf());
+        assert(!i.failed());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostreambuf_iterator<wchar_t> i(outf.rdbuf());
+        assert(!i.failed());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/assign_c.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/assign_c.pass.cpp
new file mode 100644
index 0000000..401d9cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/assign_c.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// ostreambuf_iterator<charT,traits>&
+//   operator=(charT c);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostreambuf_iterator<char> i(outf);
+        i = 'a';
+        assert(outf.str() == "a");
+        i = 'b';
+        assert(outf.str() == "ab");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostreambuf_iterator<wchar_t> i(outf);
+        i = L'a';
+        assert(outf.str() == L"a");
+        i = L'b';
+        assert(outf.str() == L"ab");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/deref.pass.cpp
new file mode 100644
index 0000000..671d452
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/deref.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// ostreambuf_iterator<charT,traits>& operator*();
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostreambuf_iterator<char> i(outf);
+        std::ostreambuf_iterator<char>& iref = *i;
+        assert(&iref == &i);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostreambuf_iterator<wchar_t> i(outf);
+        std::ostreambuf_iterator<wchar_t>& iref = *i;
+        assert(&iref == &i);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/failed.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/failed.pass.cpp
new file mode 100644
index 0000000..665554d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/failed.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// bool failed() const throw();
+
+#include <cassert>
+#include <iterator>
+#include <sstream>
+
+#include "test_macros.h"
+
+template <typename Char, typename Traits = std::char_traits<Char> >
+struct my_streambuf : public std::basic_streambuf<Char,Traits> {
+    typedef typename std::basic_streambuf<Char,Traits>::int_type  int_type;
+    typedef typename std::basic_streambuf<Char,Traits>::char_type char_type;
+
+    my_streambuf() {}
+    int_type sputc(char_type) { return Traits::eof(); }
+};
+
+int main(int, char**)
+{
+    {
+        my_streambuf<char> buf;
+        std::ostreambuf_iterator<char> i(&buf);
+        i = 'a';
+        assert(i.failed());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        my_streambuf<wchar_t> buf;
+        std::ostreambuf_iterator<wchar_t> i(&buf);
+        i = L'a';
+        assert(i.failed());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/increment.pass.cpp
new file mode 100644
index 0000000..88d4e27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/ostreambuf.iter.ops/increment.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// class ostreambuf_iterator
+
+// ostreambuf_iterator<charT,traits>& operator++();
+// ostreambuf_iterator<charT,traits>& operator++(int);
+
+#include <iterator>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream outf;
+        std::ostreambuf_iterator<char> i(outf);
+        std::ostreambuf_iterator<char>& iref = ++i;
+        assert(&iref == &i);
+        std::ostreambuf_iterator<char>& iref2 = i++;
+        assert(&iref2 == &i);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream outf;
+        std::ostreambuf_iterator<wchar_t> i(outf);
+        std::ostreambuf_iterator<wchar_t>& iref = ++i;
+        assert(&iref == &i);
+        std::ostreambuf_iterator<wchar_t>& iref2 = i++;
+        assert(&iref2 == &i);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/types.pass.cpp
new file mode 100644
index 0000000..9562297
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/iterators/stream.iterators/ostreambuf.iterator/types.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <iterator>
+
+// template <class charT, class traits = char_traits<charT> >
+// class ostreambuf_iterator
+//  : public iterator<output_iterator_tag, void, void, void, void> // until C++17
+// {
+// public:
+//     typedef output_iterator_tag            iterator_category;
+//     typedef void                           value_type;
+//     typedef void                           difference_type; // until C++20
+//     typedef ptrdiff_t                      difference_type; // since C++20
+//     typedef void                           pointer;
+//     typedef void                           reference;
+//
+//     typedef charT                          char_type;
+//     typedef traits                         traits_type;
+//     typedef basic_streambuf<charT, traits> streambuf_type;
+//     typedef basic_ostream<charT, traits>   ostream_type;
+//     ...
+
+#include <cstddef>
+#include <iterator>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::ostreambuf_iterator<char> I1;
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I1>::value), "");
+#endif
+    static_assert((std::is_same<I1::iterator_category, std::output_iterator_tag>::value), "");
+    static_assert((std::is_same<I1::value_type, void>::value), "");
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<I1::difference_type, void>::value), "");
+#else
+    static_assert((std::is_same<I1::difference_type, std::ptrdiff_t>::value), "");
+#endif
+    static_assert((std::is_same<I1::pointer, void>::value), "");
+    static_assert((std::is_same<I1::reference, void>::value), "");
+    static_assert((std::is_same<I1::char_type, char>::value), "");
+    static_assert((std::is_same<I1::traits_type, std::char_traits<char> >::value), "");
+    static_assert((std::is_same<I1::streambuf_type, std::streambuf>::value), "");
+    static_assert((std::is_same<I1::ostream_type, std::ostream>::value), "");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    typedef std::ostreambuf_iterator<wchar_t> I2;
+#if TEST_STD_VER <= 14
+    typedef std::iterator<std::output_iterator_tag, void, void, void, void> iterator_base;
+    static_assert((std::is_base_of<iterator_base, I2>::value), "");
+#endif
+    static_assert((std::is_same<I2::iterator_category, std::output_iterator_tag>::value), "");
+    static_assert((std::is_same<I2::value_type, void>::value), "");
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<I2::difference_type, void>::value), "");
+#else
+    static_assert((std::is_same<I2::difference_type, std::ptrdiff_t>::value), "");
+#endif
+    static_assert((std::is_same<I2::pointer, void>::value), "");
+    static_assert((std::is_same<I2::reference, void>::value), "");
+    static_assert((std::is_same<I2::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<I2::traits_type, std::char_traits<wchar_t> >::value), "");
+    static_assert((std::is_same<I2::streambuf_type, std::wstreambuf>::value), "");
+    static_assert((std::is_same<I2::ostream_type, std::wostream>::value), "");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_partial_order_fallback.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_partial_order_fallback.pass.cpp
new file mode 100644
index 0000000..a057a34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_partial_order_fallback.pass.cpp
@@ -0,0 +1,325 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T> constexpr partial_ordering compare_partial_order_fallback(const T& a, const T& b);
+
+#include <compare>
+
+#include <cassert>
+#include <cmath>
+#include <iterator> // std::size
+#include <limits>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template<class T, class U>
+constexpr auto has_partial_order(T&& t, U&& u)
+    -> decltype(std::compare_partial_order_fallback(static_cast<T&&>(t), static_cast<U&&>(u)), true)
+{
+    return true;
+}
+
+constexpr bool has_partial_order(...) {
+    return false;
+}
+
+namespace N11 {
+    struct A {};
+    struct B {};
+    std::strong_ordering partial_order(const A&, const A&) { return std::strong_ordering::less; }
+    std::strong_ordering partial_order(const A&, const B&);
+}
+
+void test_1_1()
+{
+    // If the decayed types of E and F differ, partial_order(E, F) is ill-formed.
+
+    static_assert( has_partial_order(1, 2));
+    static_assert(!has_partial_order(1, (short)2));
+    static_assert(!has_partial_order(1, 2.0));
+    static_assert(!has_partial_order(1.0f, 2.0));
+
+    static_assert( has_partial_order((int*)nullptr, (int*)nullptr));
+    static_assert(!has_partial_order((int*)nullptr, (const int*)nullptr));
+    static_assert(!has_partial_order((const int*)nullptr, (int*)nullptr));
+    static_assert( has_partial_order((const int*)nullptr, (const int*)nullptr));
+
+    N11::A a;
+    N11::B b;
+    static_assert( has_partial_order(a, a));
+    static_assert(!has_partial_order(a, b));
+}
+
+namespace N12 {
+    struct A {};
+    std::strong_ordering partial_order(A&, A&&) { return std::strong_ordering::less; }
+    std::weak_ordering partial_order(A&&, A&&) { return std::weak_ordering::equivalent; }
+    std::strong_ordering partial_order(const A&, const A&);
+
+    struct B {
+        friend int partial_order(B, B);
+    };
+
+    struct PartialOrder {
+        explicit operator std::partial_ordering() const { return std::partial_ordering::less; }
+    };
+    struct C {
+        bool touched = false;
+        friend PartialOrder partial_order(C& lhs, C&) { lhs.touched = true; return PartialOrder(); }
+    };
+}
+
+void test_1_2()
+{
+    // Otherwise, partial_ordering(partial_order(E, F))
+    // if it is a well-formed expression with overload resolution performed
+    // in a context that does not include a declaration of std::partial_order.
+
+    // Test that partial_order does not const-qualify the forwarded arguments.
+    N12::A a;
+    assert(std::compare_partial_order_fallback(a, std::move(a)) == std::partial_ordering::less);
+    assert(std::compare_partial_order_fallback(std::move(a), std::move(a)) == std::partial_ordering::equivalent);
+
+    // The type of partial_order(e,f) must be explicitly convertible to partial_ordering.
+    N12::B b;
+    static_assert(!has_partial_order(b, b));
+
+    N12::C c1, c2;
+    ASSERT_SAME_TYPE(decltype(std::compare_partial_order_fallback(c1, c2)), std::partial_ordering);
+    assert(std::partial_order(c1, c2) == std::partial_ordering::less);
+    assert(c1.touched);
+    assert(!c2.touched);
+}
+
+namespace N13 {
+    // Compare to N12::A.
+    struct A {};
+    bool operator==(const A&, const A&);
+    constexpr std::partial_ordering operator<=>(A&, A&&) { return std::partial_ordering::less; }
+    constexpr std::partial_ordering operator<=>(A&&, A&&) { return std::partial_ordering::equivalent; }
+    std::partial_ordering operator<=>(const A&, const A&);
+    static_assert(std::three_way_comparable<A>);
+
+    struct B {
+        std::partial_ordering operator<=>(const B&) const;  // lacks operator==
+    };
+    static_assert(!std::three_way_comparable<B>);
+
+    struct C {
+        bool *touched;
+        bool operator==(const C&) const;
+        constexpr std::partial_ordering operator<=>(const C& rhs) const {
+            *rhs.touched = true;
+            return std::partial_ordering::equivalent;
+        }
+    };
+    static_assert(std::three_way_comparable<C>);
+}
+
+constexpr bool test_1_3()
+{
+    // Otherwise, partial_ordering(compare_three_way()(E, F)) if it is a well-formed expression.
+
+    // Test neither partial_order nor compare_three_way const-qualify the forwarded arguments.
+    N13::A a;
+    assert(std::compare_partial_order_fallback(a, std::move(a)) == std::partial_ordering::less);
+    assert(std::compare_partial_order_fallback(std::move(a), std::move(a)) == std::partial_ordering::equivalent);
+
+    N13::B b;
+    static_assert(!has_partial_order(b, b));
+
+    // Test that the arguments are passed to <=> in the correct order.
+    bool c1_touched = false;
+    bool c2_touched = false;
+    N13::C c1 = {&c1_touched};
+    N13::C c2 = {&c2_touched};
+    assert(std::compare_partial_order_fallback(c1, c2) == std::partial_ordering::equivalent);
+    assert(!c1_touched);
+    assert(c2_touched);
+
+    // For partial_order, this bullet point takes care of floating-point types;
+    // they receive their natural partial order.
+    {
+        using F = float;
+        F nan = std::numeric_limits<F>::quiet_NaN();
+        assert(std::compare_partial_order_fallback(F(1), F(2)) == std::partial_ordering::less);
+        assert(std::compare_partial_order_fallback(F(0), -F(0)) == std::partial_ordering::equivalent);
+#ifndef TEST_COMPILER_GCC  // GCC can't compare NaN to non-NaN in a constant-expression
+        assert(std::compare_partial_order_fallback(nan, F(1)) == std::partial_ordering::unordered);
+#endif
+        assert(std::compare_partial_order_fallback(nan, nan) == std::partial_ordering::unordered);
+    }
+    {
+        using F = double;
+        F nan = std::numeric_limits<F>::quiet_NaN();
+        assert(std::compare_partial_order_fallback(F(1), F(2)) == std::partial_ordering::less);
+        assert(std::compare_partial_order_fallback(F(0), -F(0)) == std::partial_ordering::equivalent);
+#ifndef TEST_COMPILER_GCC
+        assert(std::compare_partial_order_fallback(nan, F(1)) == std::partial_ordering::unordered);
+#endif
+        assert(std::compare_partial_order_fallback(nan, nan) == std::partial_ordering::unordered);
+    }
+    {
+        using F = long double;
+        F nan = std::numeric_limits<F>::quiet_NaN();
+        assert(std::compare_partial_order_fallback(F(1), F(2)) == std::partial_ordering::less);
+        assert(std::compare_partial_order_fallback(F(0), -F(0)) == std::partial_ordering::equivalent);
+#ifndef TEST_COMPILER_GCC
+        assert(std::compare_partial_order_fallback(nan, F(1)) == std::partial_ordering::unordered);
+#endif
+        assert(std::compare_partial_order_fallback(nan, nan) == std::partial_ordering::unordered);
+    }
+
+    return true;
+}
+
+namespace N14 {
+    struct A {};
+    constexpr std::strong_ordering weak_order(A&, A&&) { return std::strong_ordering::less; }
+    constexpr std::strong_ordering weak_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering weak_order(const A&, const A&);
+
+    struct B {
+        friend std::partial_ordering weak_order(B, B);
+    };
+
+    struct StrongOrder {
+        operator std::strong_ordering() const { return std::strong_ordering::less; }
+    };
+    struct C {
+        friend StrongOrder weak_order(C& lhs, C&);
+    };
+
+    struct WeakOrder {
+        constexpr explicit operator std::weak_ordering() const { return std::weak_ordering::less; }
+        operator std::partial_ordering() const = delete;
+    };
+    struct D {
+        bool touched = false;
+        friend constexpr WeakOrder weak_order(D& lhs, D&) { lhs.touched = true; return WeakOrder(); }
+    };
+}
+
+constexpr bool test_1_4()
+{
+    // Otherwise, partial_ordering(weak_order(E, F)) [that is, std::weak_order]
+    // if it is a well-formed expression.
+
+    // Test that partial_order and weak_order do not const-qualify the forwarded arguments.
+    N14::A a;
+    assert(std::compare_partial_order_fallback(a, std::move(a)) == std::partial_ordering::less);
+    assert(std::compare_partial_order_fallback(std::move(a), std::move(a)) == std::partial_ordering::equivalent);
+
+    // The type of ADL weak_order(e,f) must be explicitly convertible to weak_ordering
+    // (not just to partial_ordering), or else std::weak_order(e,f) won't exist.
+    N14::B b;
+    static_assert(!has_partial_order(b, b));
+
+    // The type of ADL weak_order(e,f) must be explicitly convertible to weak_ordering
+    // (not just to strong_ordering), or else std::weak_order(e,f) won't exist.
+    N14::C c;
+    static_assert(!has_partial_order(c, c));
+
+    N14::D d1, d2;
+    ASSERT_SAME_TYPE(decltype(std::compare_partial_order_fallback(d1, d2)), std::partial_ordering);
+    assert(std::compare_partial_order_fallback(d1, d2) == std::partial_ordering::less);
+    assert(d1.touched);
+    assert(!d2.touched);
+
+    return true;
+}
+
+namespace N2 {
+    struct Stats {
+        int eq = 0;
+        int lt = 0;
+    };
+    struct A {
+        Stats *stats_;
+        double value_;
+        constexpr explicit A(Stats *stats, double value) : stats_(stats), value_(value) {}
+        friend constexpr bool operator==(A a, A b) { a.stats_->eq += 1; return a.value_ == b.value_; }
+        friend constexpr bool operator<(A a, A b) { a.stats_->lt += 1; return a.value_ < b.value_; }
+    };
+    struct NoEquality {
+        friend bool operator<(NoEquality, NoEquality);
+    };
+    struct VC1 {
+        // Deliberately asymmetric `const` qualifiers here.
+        friend bool operator==(const VC1&, VC1&);
+        friend bool operator<(const VC1&, VC1&);
+    };
+    struct VC2 {
+        // Deliberately asymmetric `const` qualifiers here.
+        friend bool operator==(const VC2&, VC2&);
+        friend bool operator==(VC2&, const VC2&) = delete;
+        friend bool operator<(const VC2&, VC2&);
+        friend bool operator<(VC2&, const VC2&);
+    };
+}
+
+constexpr bool test_2()
+{
+    {
+        N2::Stats stats;
+        N2::Stats bstats;
+        assert(std::compare_partial_order_fallback(N2::A(&stats, 1), N2::A(nullptr, 1)) == std::partial_ordering::equivalent);
+        assert(stats.eq == 1 && stats.lt == 0);
+        stats = {};
+        assert(std::compare_partial_order_fallback(N2::A(&stats, 1), N2::A(nullptr, 2)) == std::partial_ordering::less);
+        assert(stats.eq == 1 && stats.lt == 1);
+        stats = {};
+        assert(std::compare_partial_order_fallback(N2::A(&stats, 2), N2::A(&bstats, 1)) == std::partial_ordering::greater);
+        assert(stats.eq == 1 && stats.lt == 1 && bstats.lt == 1);
+        stats = {};
+        bstats = {};
+        double nan = std::numeric_limits<double>::quiet_NaN();
+        assert(std::compare_partial_order_fallback(N2::A(&stats, nan), N2::A(&bstats, nan)) == std::partial_ordering::unordered);
+        assert(stats.eq == 1 && stats.lt == 1 && bstats.lt == 1);
+    }
+    {
+        N2::NoEquality ne;
+        assert(!has_partial_order(ne, ne));
+    }
+    {
+        // LWG3465: (cvc < vc) is well-formed, (vc < cvc) is not. Substitution failure.
+        N2::VC1 vc;
+        const N2::VC1 cvc;
+        assert(!has_partial_order(cvc, vc));
+        assert(!has_partial_order(vc, cvc));
+    }
+    {
+        // LWG3465: (cvc == vc) is well-formed, (vc == cvc) is not. That's fine.
+        N2::VC2 vc;
+        const N2::VC2 cvc;
+        assert( has_partial_order(cvc, vc));
+        assert(!has_partial_order(vc, cvc));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test_1_1();
+    test_1_2();
+    test_1_3();
+    test_1_4();
+    test_2();
+
+    static_assert(test_1_3());
+    static_assert(test_1_4());
+    static_assert(test_2());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_strong_order_fallback.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_strong_order_fallback.pass.cpp
new file mode 100644
index 0000000..2ad05cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_strong_order_fallback.pass.cpp
@@ -0,0 +1,529 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T> constexpr strong_ordering compare_strong_order_fallback(const T& a, const T& b);
+
+#include <compare>
+
+#include <cassert>
+#include <cmath>
+#include <iterator> // std::size
+#include <limits>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+#if defined(__i386__)
+ #define TEST_BUGGY_SIGNALING_NAN
+#endif
+
+template<class T, class U>
+constexpr auto has_strong_order(T&& t, U&& u)
+    -> decltype(std::compare_strong_order_fallback(static_cast<T&&>(t), static_cast<U&&>(u)), true)
+{
+    return true;
+}
+
+constexpr bool has_strong_order(...) {
+    return false;
+}
+
+namespace N11 {
+    struct A {};
+    struct B {};
+    std::strong_ordering strong_order(const A&, const A&) { return std::strong_ordering::less; }
+    std::strong_ordering strong_order(const A&, const B&);
+}
+
+void test_1_1()
+{
+    // If the decayed types of E and F differ, strong_order(E, F) is ill-formed.
+
+    static_assert( has_strong_order(1, 2));
+    static_assert(!has_strong_order(1, (short)2));
+    static_assert(!has_strong_order(1, 2.0));
+    static_assert(!has_strong_order(1.0f, 2.0));
+
+    static_assert( has_strong_order((int*)nullptr, (int*)nullptr));
+    static_assert(!has_strong_order((int*)nullptr, (const int*)nullptr));
+    static_assert(!has_strong_order((const int*)nullptr, (int*)nullptr));
+    static_assert( has_strong_order((const int*)nullptr, (const int*)nullptr));
+
+    N11::A a;
+    N11::B b;
+    static_assert( has_strong_order(a, a));
+    static_assert(!has_strong_order(a, b));
+}
+
+namespace N12 {
+    struct A {};
+    std::strong_ordering strong_order(A&, A&&) { return std::strong_ordering::less; }
+    std::strong_ordering strong_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering strong_order(const A&, const A&);
+
+    struct B {
+        friend std::weak_ordering strong_order(B&, B&);
+    };
+
+    struct StrongOrder {
+        explicit operator std::strong_ordering() const { return std::strong_ordering::less; }
+    };
+    struct C {
+        bool touched = false;
+        friend StrongOrder strong_order(C& lhs, C&) { lhs.touched = true; return StrongOrder(); }
+    };
+}
+
+void test_1_2()
+{
+    // Otherwise, strong_ordering(strong_order(E, F))
+    // if it is a well-formed expression with overload resolution performed
+    // in a context that does not include a declaration of std::strong_order.
+
+    // Test that strong_order does not const-qualify the forwarded arguments.
+    N12::A a;
+    assert(std::compare_strong_order_fallback(a, std::move(a)) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(std::move(a), std::move(a)) == std::strong_ordering::equal);
+
+    // The type of strong_order(e,f) must be explicitly convertible to strong_ordering.
+    N12::B b;
+    static_assert(!has_strong_order(b, b));
+
+    N12::C c1, c2;
+    ASSERT_SAME_TYPE(decltype(std::compare_strong_order_fallback(c1, c2)), std::strong_ordering);
+    assert(std::compare_strong_order_fallback(c1, c2) == std::strong_ordering::less);
+    assert(c1.touched);
+    assert(!c2.touched);
+}
+
+template<class F>
+constexpr bool test_1_3()
+{
+    // Otherwise, if the decayed type T of E is a floating-point type,
+    // yields a value of type strong_ordering that is consistent with
+    // the ordering observed by T's comparison operators,
+    // and if numeric_limits<T>::is_iec559 is true, is additionally consistent with
+    // the totalOrder operation as specified in ISO/IEC/IEEE 60559.
+
+    static_assert(std::numeric_limits<F>::is_iec559);
+
+    ASSERT_SAME_TYPE(decltype(std::compare_strong_order_fallback(F(0), F(0))), std::strong_ordering);
+
+    F v[] = {
+        -std::numeric_limits<F>::infinity(),
+        std::numeric_limits<F>::lowest(),  // largest (finite) negative number
+        F(-1.0), F(-0.1),
+        -std::numeric_limits<F>::min(),    // smallest (normal) negative number
+        F(-0.0),                           // negative zero
+        F(0.0),
+        std::numeric_limits<F>::min(),     // smallest (normal) positive number
+        F(0.1), F(1.0), F(2.0), F(3.14),
+        std::numeric_limits<F>::max(),     // largest (finite) positive number
+        std::numeric_limits<F>::infinity(),
+    };
+
+    static_assert(std::size(v) == 14);
+
+    // Sanity-check that array 'v' is indeed in the right order.
+    for (int i=0; i < 14; ++i) {
+        for (int j=0; j < 14; ++j) {
+            auto naturalOrder = (v[i] <=> v[j]);
+            if (v[i] == 0 && v[j] == 0) {
+                assert(naturalOrder == std::partial_ordering::equivalent);
+            } else {
+                assert(naturalOrder == std::partial_ordering::unordered || naturalOrder == (i <=> j));
+            }
+        }
+    }
+
+    assert(std::compare_strong_order_fallback(v[0], v[0]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[0], v[1]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[2]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[3]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[4]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[5]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[6]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[0], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[1], v[1]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[1], v[2]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[3]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[4]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[5]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[6]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[1], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[2], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[2], v[2]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[2], v[3]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[4]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[5]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[6]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[2], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[3], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[3], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[3], v[3]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[3], v[4]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[5]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[6]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[3], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[4], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[4], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[4], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[4], v[4]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[4], v[5]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[6]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[4], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[5], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[5], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[5], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[5], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[5], v[5]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[5], v[6]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[5], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[6], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[6], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[6], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[6], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[6], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[6], v[6]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[6], v[7]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[6], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[7], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[7], v[7]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[7], v[8]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[7], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[7], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[7], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[7], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[7], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[8], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[7]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[8], v[8]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[8], v[9]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[8], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[8], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[8], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[8], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[9], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[7]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[8]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[9], v[9]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[9], v[10]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[9], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[9], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[9], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[10], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[7]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[8]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[9]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[10], v[10]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[10], v[11]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[10], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[10], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[11], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[7]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[8]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[9]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[10]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[11], v[11]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[11], v[12]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[11], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[12], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[7]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[8]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[9]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[10]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[11]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[12], v[12]) == std::strong_ordering::equal);
+    assert(std::compare_strong_order_fallback(v[12], v[13]) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(v[13], v[0]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[1]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[2]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[3]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[4]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[5]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[6]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[7]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[8]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[9]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[10]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[11]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[12]) == std::strong_ordering::greater);
+    assert(std::compare_strong_order_fallback(v[13], v[13]) == std::strong_ordering::equal);
+
+
+    // There's no way to produce a specifically positive or negative NAN
+    // at compile-time, so the NAN-related tests must be runtime-only.
+
+    if (!std::is_constant_evaluated()) {
+        F nq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(-1));
+        F ns = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(-1));
+        F ps = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(+1));
+        F pq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(+1));
+
+        assert(std::compare_strong_order_fallback(nq, nq) == std::strong_ordering::equal);
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::compare_strong_order_fallback(nq, ns) == std::strong_ordering::less);
+#endif
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_strong_order_fallback(nq, v[i]) == std::strong_ordering::less);
+        }
+        assert(std::compare_strong_order_fallback(nq, ps) == std::strong_ordering::less);
+        assert(std::compare_strong_order_fallback(nq, pq) == std::strong_ordering::less);
+
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::compare_strong_order_fallback(ns, nq) == std::strong_ordering::greater);
+#endif
+        assert(std::compare_strong_order_fallback(ns, ns) == std::strong_ordering::equal);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_strong_order_fallback(ns, v[i]) == std::strong_ordering::less);
+        }
+        assert(std::compare_strong_order_fallback(ns, ps) == std::strong_ordering::less);
+        assert(std::compare_strong_order_fallback(ns, pq) == std::strong_ordering::less);
+
+        assert(std::compare_strong_order_fallback(ps, nq) == std::strong_ordering::greater);
+        assert(std::compare_strong_order_fallback(ps, ns) == std::strong_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_strong_order_fallback(ps, v[i]) == std::strong_ordering::greater);
+        }
+        assert(std::compare_strong_order_fallback(ps, ps) == std::strong_ordering::equal);
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::compare_strong_order_fallback(ps, pq) == std::strong_ordering::less);
+#endif
+
+        assert(std::compare_strong_order_fallback(pq, nq) == std::strong_ordering::greater);
+        assert(std::compare_strong_order_fallback(pq, ns) == std::strong_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_strong_order_fallback(pq, v[i]) == std::strong_ordering::greater);
+        }
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::compare_strong_order_fallback(pq, ps) == std::strong_ordering::greater);
+#endif
+        assert(std::compare_strong_order_fallback(pq, pq) == std::strong_ordering::equal);
+    }
+
+    return true;
+}
+
+namespace N14 {
+    // Compare to N12::A.
+    struct A {};
+    bool operator==(const A&, const A&);
+    constexpr std::strong_ordering operator<=>(A&, A&&) { return std::strong_ordering::less; }
+    constexpr std::strong_ordering operator<=>(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering operator<=>(const A&, const A&);
+    static_assert(std::three_way_comparable<A>);
+
+    struct B {
+        std::strong_ordering operator<=>(const B&) const;  // lacks operator==
+    };
+    static_assert(!std::three_way_comparable<B>);
+
+    struct C {
+        bool *touched;
+        bool operator==(const C&) const;
+        constexpr std::strong_ordering operator<=>(const C& rhs) const {
+            *rhs.touched = true;
+            return std::strong_ordering::equal;
+        }
+    };
+    static_assert(std::three_way_comparable<C>);
+}
+
+constexpr bool test_1_4()
+{
+    // Otherwise, strong_ordering(compare_three_way()(E, F)) if it is a well-formed expression.
+
+    // Test neither strong_order nor compare_three_way const-qualify the forwarded arguments.
+    N14::A a;
+    assert(std::compare_strong_order_fallback(a, std::move(a)) == std::strong_ordering::less);
+    assert(std::compare_strong_order_fallback(std::move(a), std::move(a)) == std::strong_ordering::equal);
+
+    N14::B b;
+    static_assert(!has_strong_order(b, b));
+
+    // Test that the arguments are passed to <=> in the correct order.
+    bool c1_touched = false;
+    bool c2_touched = false;
+    N14::C c1 = {&c1_touched};
+    N14::C c2 = {&c2_touched};
+    assert(std::compare_strong_order_fallback(c1, c2) == std::strong_ordering::equal);
+    assert(!c1_touched);
+    assert(c2_touched);
+
+    return true;
+}
+
+namespace N2 {
+    struct Stats {
+        int eq = 0;
+        int lt = 0;
+    };
+    struct A {
+        Stats *stats_;
+        double value_;
+        constexpr explicit A(Stats *stats, double value) : stats_(stats), value_(value) {}
+        friend constexpr bool operator==(A a, A b) { a.stats_->eq += 1; return a.value_ == b.value_; }
+        friend constexpr bool operator<(A a, A b) { a.stats_->lt += 1; return a.value_ < b.value_; }
+    };
+    struct NoEquality {
+        friend bool operator<(NoEquality, NoEquality);
+    };
+    struct VC1 {
+        // Deliberately asymmetric `const` qualifiers here.
+        friend bool operator==(const VC1&, VC1&);
+        friend bool operator<(const VC1&, VC1&);
+    };
+    struct VC2 {
+        // Deliberately asymmetric `const` qualifiers here.
+        friend bool operator==(const VC2&, VC2&);
+        friend bool operator==(VC2&, const VC2&) = delete;
+        friend bool operator<(const VC2&, VC2&);
+        friend bool operator<(VC2&, const VC2&);
+    };
+}
+
+constexpr bool test_2()
+{
+    {
+        N2::Stats stats;
+        assert(std::compare_strong_order_fallback(N2::A(&stats, 1), N2::A(nullptr, 1)) == std::strong_ordering::equal);
+        assert(stats.eq == 1 && stats.lt == 0);
+        stats = {};
+        assert(std::compare_strong_order_fallback(N2::A(&stats, 1), N2::A(nullptr, 2)) == std::strong_ordering::less);
+        assert(stats.eq == 1 && stats.lt == 1);
+        stats = {};
+        assert(std::compare_strong_order_fallback(N2::A(&stats, 2), N2::A(nullptr, 1)) == std::strong_ordering::greater);
+        assert(stats.eq == 1 && stats.lt == 1);
+    }
+    {
+        N2::NoEquality ne;
+        assert(!has_strong_order(ne, ne));
+    }
+    {
+        // LWG3465: (cvc < vc) is well-formed, (vc < cvc) is not. That's fine, for strong ordering.
+        N2::VC1 vc;
+        const N2::VC1 cvc;
+        assert( has_strong_order(cvc, vc));
+        assert(!has_strong_order(vc, cvc));
+    }
+    {
+        // LWG3465: (cvc == vc) is well-formed, (vc == cvc) is not. That's fine.
+        N2::VC2 vc;
+        const N2::VC2 cvc;
+        assert( has_strong_order(cvc, vc));
+        assert(!has_strong_order(vc, cvc));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test_1_1();
+    test_1_2();
+    test_1_3<float>();
+    test_1_3<double>();
+    // test_1_3<long double>();  // UNIMPLEMENTED
+    test_1_4();
+    test_2();
+
+    static_assert(test_1_3<float>());
+    static_assert(test_1_3<double>());
+    // static_assert(test_1_3<long double>());  // UNIMPLEMENTED
+    static_assert(test_1_4());
+    static_assert(test_2());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_weak_order_fallback.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_weak_order_fallback.pass.cpp
new file mode 100644
index 0000000..65674b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/compare_weak_order_fallback.pass.cpp
@@ -0,0 +1,578 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T> constexpr weak_ordering compare_weak_order_fallback(const T& a, const T& b);
+
+#include <compare>
+
+#include <cassert>
+#include <cmath>
+#include <iterator> // std::size
+#include <limits>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template<class T, class U>
+constexpr auto has_weak_order(T&& t, U&& u)
+    -> decltype(std::compare_weak_order_fallback(static_cast<T&&>(t), static_cast<U&&>(u)), true)
+{
+    return true;
+}
+
+constexpr bool has_weak_order(...) {
+    return false;
+}
+
+namespace N11 {
+    struct A {};
+    struct B {};
+    std::strong_ordering weak_order(const A&, const A&) { return std::strong_ordering::less; }
+    std::strong_ordering weak_order(const A&, const B&);
+}
+
+void test_1_1()
+{
+    // If the decayed types of E and F differ, weak_order(E, F) is ill-formed.
+
+    static_assert( has_weak_order(1, 2));
+    static_assert(!has_weak_order(1, (short)2));
+    static_assert(!has_weak_order(1, 2.0));
+    static_assert(!has_weak_order(1.0f, 2.0));
+
+    static_assert( has_weak_order((int*)nullptr, (int*)nullptr));
+    static_assert(!has_weak_order((int*)nullptr, (const int*)nullptr));
+    static_assert(!has_weak_order((const int*)nullptr, (int*)nullptr));
+    static_assert( has_weak_order((const int*)nullptr, (const int*)nullptr));
+
+    N11::A a;
+    N11::B b;
+    static_assert( has_weak_order(a, a));
+    static_assert(!has_weak_order(a, b));
+}
+
+namespace N12 {
+    struct A {};
+    std::strong_ordering weak_order(A&, A&&) { return std::strong_ordering::less; }
+    std::strong_ordering weak_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering weak_order(const A&, const A&);
+
+    struct B {
+        friend std::partial_ordering weak_order(B&, B&);
+    };
+
+    struct WeakOrder {
+        explicit operator std::weak_ordering() const { return std::weak_ordering::less; }
+    };
+    struct C {
+        bool touched = false;
+        friend WeakOrder weak_order(C& lhs, C&) { lhs.touched = true; return WeakOrder(); }
+    };
+}
+
+void test_1_2()
+{
+    // Otherwise, weak_ordering(weak_order(E, F))
+    // if it is a well-formed expression with overload resolution performed
+    // in a context that does not include a declaration of std::weak_order.
+
+    // Test that weak_order does not const-qualify the forwarded arguments.
+    N12::A a;
+    assert(std::compare_weak_order_fallback(a, std::move(a)) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(std::move(a), std::move(a)) == std::weak_ordering::equivalent);
+
+    // The type of weak_order(e,f) must be explicitly convertible to weak_ordering.
+    N12::B b;
+    static_assert(!has_weak_order(b, b));
+
+    N12::C c1, c2;
+    ASSERT_SAME_TYPE(decltype(std::compare_weak_order_fallback(c1, c2)), std::weak_ordering);
+    assert(std::compare_weak_order_fallback(c1, c2) == std::weak_ordering::less);
+    assert(c1.touched);
+    assert(!c2.touched);
+}
+
+template<class F>
+constexpr bool test_1_3()
+{
+    // Otherwise, if the decayed type T of E is a floating-point type,
+    // yields a value of type weak_ordering that is consistent with
+    // the ordering observed by T's comparison operators and strong_order,
+    // and if numeric_limits<T>::is_iec559 is true, is additionally consistent with
+    // the following equivalence classes...
+
+    // std::numeric_limits<F>::is_iec559 is usually true.
+    // It is false for F=long double on AIX; but this test is still expected
+    // to pass (e.g. std::weak_order(+0, -0) == weak_ordering::equivalent,
+    // even on AIX).
+
+    ASSERT_SAME_TYPE(decltype(std::compare_weak_order_fallback(F(0), F(0))), std::weak_ordering);
+
+    F v[] = {
+        -std::numeric_limits<F>::infinity(),
+        std::numeric_limits<F>::lowest(),  // largest (finite) negative number
+        F(-1.0), F(-0.1),
+        -std::numeric_limits<F>::min(),    // smallest (normal) negative number
+        F(-0.0),                           // negative zero
+        F(0.0),
+        std::numeric_limits<F>::min(),     // smallest (normal) positive number
+        F(0.1), F(1.0), F(2.0), F(3.14),
+        std::numeric_limits<F>::max(),     // largest (finite) positive number
+        std::numeric_limits<F>::infinity(),
+    };
+
+    static_assert(std::size(v) == 14);
+
+    // Sanity-check that array 'v' is indeed in the right order.
+    for (int i=0; i < 14; ++i) {
+        for (int j=0; j < 14; ++j) {
+            auto naturalOrder = (v[i] <=> v[j]);
+            if (v[i] == 0 && v[j] == 0) {
+                assert(naturalOrder == std::partial_ordering::equivalent);
+            } else {
+                assert(naturalOrder == std::partial_ordering::unordered || naturalOrder == (i <=> j));
+            }
+        }
+    }
+
+    assert(std::compare_weak_order_fallback(v[0], v[0]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[0], v[1]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[2]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[3]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[4]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[5]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[6]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[0], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[1], v[1]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[1], v[2]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[3]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[4]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[5]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[6]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[1], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[2], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[2], v[2]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[2], v[3]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[4]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[5]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[6]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[2], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[3], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[3], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[3], v[3]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[3], v[4]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[5]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[6]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[3], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[4], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[4], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[4], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[4], v[4]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[4], v[5]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[6]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[4], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[5], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[5], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[5], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[5], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[5], v[5]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[5], v[6]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[5], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[5], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[6], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[6], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[6], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[6], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[6], v[5]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[6], v[6]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[6], v[7]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[6], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[7], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[7], v[7]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[7], v[8]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[7], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[7], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[7], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[7], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[7], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[8], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[7]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[8], v[8]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[8], v[9]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[8], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[8], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[8], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[8], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[9], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[7]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[8]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[9], v[9]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[9], v[10]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[9], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[9], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[9], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[10], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[7]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[8]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[9]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[10], v[10]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[10], v[11]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[10], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[10], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[11], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[7]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[8]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[9]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[10]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[11], v[11]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[11], v[12]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[11], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[12], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[7]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[8]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[9]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[10]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[11]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[12], v[12]) == std::weak_ordering::equivalent);
+    assert(std::compare_weak_order_fallback(v[12], v[13]) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(v[13], v[0]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[1]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[2]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[3]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[4]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[5]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[6]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[7]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[8]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[9]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[10]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[11]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[12]) == std::weak_ordering::greater);
+    assert(std::compare_weak_order_fallback(v[13], v[13]) == std::weak_ordering::equivalent);
+
+
+    // There's no way to produce a specifically positive or negative NAN
+    // at compile-time, so the NAN-related tests must be runtime-only.
+
+    if (!std::is_constant_evaluated()) {
+        F nq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(-1));
+        F ns = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(-1));
+        F ps = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(+1));
+        F pq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(+1));
+
+        assert(std::compare_weak_order_fallback(nq, nq) == std::weak_ordering::equivalent);
+        assert(std::compare_weak_order_fallback(nq, ns) == std::weak_ordering::equivalent);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_weak_order_fallback(nq, v[i]) == std::weak_ordering::less);
+        }
+        assert(std::compare_weak_order_fallback(nq, ps) == std::weak_ordering::less);
+        assert(std::compare_weak_order_fallback(nq, pq) == std::weak_ordering::less);
+
+        assert(std::compare_weak_order_fallback(ns, nq) == std::weak_ordering::equivalent);
+        assert(std::compare_weak_order_fallback(ns, ns) == std::weak_ordering::equivalent);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_weak_order_fallback(ns, v[i]) == std::weak_ordering::less);
+        }
+        assert(std::compare_weak_order_fallback(ns, ps) == std::weak_ordering::less);
+        assert(std::compare_weak_order_fallback(ns, pq) == std::weak_ordering::less);
+
+        assert(std::compare_weak_order_fallback(ps, nq) == std::weak_ordering::greater);
+        assert(std::compare_weak_order_fallback(ps, ns) == std::weak_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_weak_order_fallback(ps, v[i]) == std::weak_ordering::greater);
+        }
+        assert(std::compare_weak_order_fallback(ps, ps) == std::weak_ordering::equivalent);
+        assert(std::compare_weak_order_fallback(ps, pq) == std::weak_ordering::equivalent);
+
+        assert(std::compare_weak_order_fallback(pq, nq) == std::weak_ordering::greater);
+        assert(std::compare_weak_order_fallback(pq, ns) == std::weak_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::compare_weak_order_fallback(pq, v[i]) == std::weak_ordering::greater);
+        }
+        assert(std::compare_weak_order_fallback(pq, ps) == std::weak_ordering::equivalent);
+        assert(std::compare_weak_order_fallback(pq, pq) == std::weak_ordering::equivalent);
+    }
+
+    return true;
+}
+
+namespace N14 {
+    // Compare to N12::A.
+    struct A {};
+    bool operator==(const A&, const A&);
+    constexpr std::weak_ordering operator<=>(A&, A&&) { return std::weak_ordering::less; }
+    constexpr std::weak_ordering operator<=>(A&&, A&&) { return std::weak_ordering::equivalent; }
+    std::weak_ordering operator<=>(const A&, const A&);
+    static_assert(std::three_way_comparable<A>);
+
+    struct B {
+        std::weak_ordering operator<=>(const B&) const;  // lacks operator==
+    };
+    static_assert(!std::three_way_comparable<B>);
+
+    struct C {
+        bool *touched;
+        bool operator==(const C&) const;
+        constexpr std::weak_ordering operator<=>(const C& rhs) const {
+            *rhs.touched = true;
+            return std::weak_ordering::equivalent;
+        }
+    };
+    static_assert(std::three_way_comparable<C>);
+}
+
+constexpr bool test_1_4()
+{
+    // Otherwise, weak_ordering(compare_three_way()(E, F)) if it is a well-formed expression.
+
+    // Test neither weak_order nor compare_three_way const-qualify the forwarded arguments.
+    N14::A a;
+    assert(std::compare_weak_order_fallback(a, std::move(a)) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(std::move(a), std::move(a)) == std::weak_ordering::equivalent);
+
+    N14::B b;
+    static_assert(!has_weak_order(b, b));
+
+    // Test that the arguments are passed to <=> in the correct order.
+    bool c1_touched = false;
+    bool c2_touched = false;
+    N14::C c1 = {&c1_touched};
+    N14::C c2 = {&c2_touched};
+    assert(std::compare_weak_order_fallback(c1, c2) == std::weak_ordering::equivalent);
+    assert(!c1_touched);
+    assert(c2_touched);
+
+    return true;
+}
+
+namespace N15 {
+    struct A {};
+    constexpr std::strong_ordering strong_order(A&, A&&) { return std::strong_ordering::less; }
+    constexpr std::strong_ordering strong_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering strong_order(const A&, const A&);
+
+    struct B {
+        friend std::weak_ordering strong_order(B&, B&);
+    };
+
+    struct WeakOrder {
+        operator std::weak_ordering() const { return std::weak_ordering::less; }
+    };
+    struct C {
+        friend WeakOrder strong_order(C& lhs, C&);
+    };
+
+    struct StrongOrder {
+        constexpr explicit operator std::strong_ordering() const { return std::strong_ordering::less; }
+        operator std::weak_ordering() const = delete;
+    };
+    struct D {
+        bool touched = false;
+        friend constexpr StrongOrder strong_order(D& lhs, D&) { lhs.touched = true; return StrongOrder(); }
+    };
+}
+
+constexpr bool test_1_5()
+{
+    // Otherwise, weak_ordering(strong_order(E, F)) [that is, std::strong_order]
+    // if it is a well-formed expression.
+
+    // Test that weak_order and strong_order do not const-qualify the forwarded arguments.
+    N15::A a;
+    assert(std::compare_weak_order_fallback(a, std::move(a)) == std::weak_ordering::less);
+    assert(std::compare_weak_order_fallback(std::move(a), std::move(a)) == std::weak_ordering::equivalent);
+
+    // The type of ADL strong_order(e,f) must be explicitly convertible to strong_ordering
+    // (not just to weak_ordering), or else std::strong_order(e,f) won't exist.
+    N15::B b;
+    static_assert(!has_weak_order(b, b));
+
+    // The type of ADL strong_order(e,f) must be explicitly convertible to strong_ordering
+    // (not just to weak_ordering), or else std::strong_order(e,f) won't exist.
+    N15::C c;
+    static_assert(!has_weak_order(c, c));
+
+    N15::D d1, d2;
+    ASSERT_SAME_TYPE(decltype(std::compare_weak_order_fallback(d1, d2)), std::weak_ordering);
+    assert(std::compare_weak_order_fallback(d1, d2) == std::weak_ordering::less);
+    assert(d1.touched);
+    assert(!d2.touched);
+
+    return true;
+}
+
+namespace N2 {
+    struct Stats {
+        int eq = 0;
+        int lt = 0;
+    };
+    struct A {
+        Stats *stats_;
+        double value_;
+        constexpr explicit A(Stats *stats, double value) : stats_(stats), value_(value) {}
+        friend constexpr bool operator==(A a, A b) { a.stats_->eq += 1; return a.value_ == b.value_; }
+        friend constexpr bool operator<(A a, A b) { a.stats_->lt += 1; return a.value_ < b.value_; }
+    };
+    struct NoEquality {
+        friend bool operator<(NoEquality, NoEquality);
+    };
+    struct VC1 {
+        // Deliberately asymmetric `const` qualifiers here.
+        friend bool operator==(const VC1&, VC1&);
+        friend bool operator<(const VC1&, VC1&);
+    };
+    struct VC2 {
+        // Deliberately asymmetric `const` qualifiers here.
+        friend bool operator==(const VC2&, VC2&);
+        friend bool operator==(VC2&, const VC2&) = delete;
+        friend bool operator<(const VC2&, VC2&);
+        friend bool operator<(VC2&, const VC2&);
+    };
+}
+
+constexpr bool test_2()
+{
+    {
+        N2::Stats stats;
+        assert(std::compare_weak_order_fallback(N2::A(&stats, 1), N2::A(nullptr, 1)) == std::weak_ordering::equivalent);
+        assert(stats.eq == 1 && stats.lt == 0);
+        stats = {};
+        assert(std::compare_weak_order_fallback(N2::A(&stats, 1), N2::A(nullptr, 2)) == std::weak_ordering::less);
+        assert(stats.eq == 1 && stats.lt == 1);
+        stats = {};
+        assert(std::compare_weak_order_fallback(N2::A(&stats, 2), N2::A(nullptr, 1)) == std::weak_ordering::greater);
+        assert(stats.eq == 1 && stats.lt == 1);
+    }
+    {
+        N2::NoEquality ne;
+        assert(!has_weak_order(ne, ne));
+    }
+    {
+        // LWG3465: (cvc < vc) is well-formed, (vc < cvc) is not. That's fine, for weak ordering.
+        N2::VC1 vc;
+        const N2::VC1 cvc;
+        assert( has_weak_order(cvc, vc));
+        assert(!has_weak_order(vc, cvc));
+    }
+    {
+        // LWG3465: (cvc == vc) is well-formed, (vc == cvc) is not. That's fine.
+        N2::VC2 vc;
+        const N2::VC2 cvc;
+        assert( has_weak_order(cvc, vc));
+        assert(!has_weak_order(vc, cvc));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test_1_1();
+    test_1_2();
+    test_1_3<float>();
+    test_1_3<double>();
+    test_1_3<long double>();
+    test_1_4();
+    test_1_5();
+    test_2();
+
+    static_assert(test_1_3<float>());
+    static_assert(test_1_3<double>());
+    static_assert(test_1_3<long double>());
+    static_assert(test_1_4());
+    static_assert(test_1_5());
+    static_assert(test_2());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/partial_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/partial_order.pass.cpp
new file mode 100644
index 0000000..bd31388
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/partial_order.pass.cpp
@@ -0,0 +1,254 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T> constexpr partial_ordering partial_order(const T& a, const T& b);
+
+#include <compare>
+
+#include <cassert>
+#include <cmath>
+#include <iterator> // std::size
+#include <limits>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template<class T, class U>
+constexpr auto has_partial_order(T&& t, U&& u)
+    -> decltype(std::partial_order(static_cast<T&&>(t), static_cast<U&&>(u)), true)
+{
+    return true;
+}
+
+constexpr bool has_partial_order(...) {
+    return false;
+}
+
+namespace N11 {
+    struct A {};
+    struct B {};
+    std::strong_ordering partial_order(const A&, const A&) { return std::strong_ordering::less; }
+    std::strong_ordering partial_order(const A&, const B&);
+}
+
+void test_1_1()
+{
+    // If the decayed types of E and F differ, partial_order(E, F) is ill-formed.
+
+    static_assert( has_partial_order(1, 2));
+    static_assert(!has_partial_order(1, (short)2));
+    static_assert(!has_partial_order(1, 2.0));
+    static_assert(!has_partial_order(1.0f, 2.0));
+
+    static_assert( has_partial_order((int*)nullptr, (int*)nullptr));
+    static_assert(!has_partial_order((int*)nullptr, (const int*)nullptr));
+    static_assert(!has_partial_order((const int*)nullptr, (int*)nullptr));
+    static_assert( has_partial_order((const int*)nullptr, (const int*)nullptr));
+
+    N11::A a;
+    N11::B b;
+    static_assert( has_partial_order(a, a));
+    static_assert(!has_partial_order(a, b));
+}
+
+namespace N12 {
+    struct A {};
+    std::strong_ordering partial_order(A&, A&&) { return std::strong_ordering::less; }
+    std::weak_ordering partial_order(A&&, A&&) { return std::weak_ordering::equivalent; }
+    std::strong_ordering partial_order(const A&, const A&);
+
+    struct B {
+        friend int partial_order(B, B);
+    };
+
+    struct PartialOrder {
+        explicit operator std::partial_ordering() const { return std::partial_ordering::less; }
+    };
+    struct C {
+        bool touched = false;
+        friend PartialOrder partial_order(C& lhs, C&) { lhs.touched = true; return PartialOrder(); }
+    };
+}
+
+void test_1_2()
+{
+    // Otherwise, partial_ordering(partial_order(E, F))
+    // if it is a well-formed expression with overload resolution performed
+    // in a context that does not include a declaration of std::partial_order.
+
+    // Test that partial_order does not const-qualify the forwarded arguments.
+    N12::A a;
+    assert(std::partial_order(a, std::move(a)) == std::partial_ordering::less);
+    assert(std::partial_order(std::move(a), std::move(a)) == std::partial_ordering::equivalent);
+
+    // The type of partial_order(e,f) must be explicitly convertible to partial_ordering.
+    N12::B b;
+    static_assert(!has_partial_order(b, b));
+
+    N12::C c1, c2;
+    ASSERT_SAME_TYPE(decltype(std::partial_order(c1, c2)), std::partial_ordering);
+    assert(std::partial_order(c1, c2) == std::partial_ordering::less);
+    assert(c1.touched);
+    assert(!c2.touched);
+}
+
+namespace N13 {
+    // Compare to N12::A.
+    struct A {};
+    bool operator==(const A&, const A&);
+    constexpr std::partial_ordering operator<=>(A&, A&&) { return std::partial_ordering::less; }
+    constexpr std::partial_ordering operator<=>(A&&, A&&) { return std::partial_ordering::equivalent; }
+    std::partial_ordering operator<=>(const A&, const A&);
+    static_assert(std::three_way_comparable<A>);
+
+    struct B {
+        std::partial_ordering operator<=>(const B&) const;  // lacks operator==
+    };
+    static_assert(!std::three_way_comparable<B>);
+
+    struct C {
+        bool *touched;
+        bool operator==(const C&) const;
+        constexpr std::partial_ordering operator<=>(const C& rhs) const {
+            *rhs.touched = true;
+            return std::partial_ordering::equivalent;
+        }
+    };
+    static_assert(std::three_way_comparable<C>);
+}
+
+constexpr bool test_1_3()
+{
+    // Otherwise, partial_ordering(compare_three_way()(E, F)) if it is a well-formed expression.
+
+    // Test neither partial_order nor compare_three_way const-qualify the forwarded arguments.
+    N13::A a;
+    assert(std::partial_order(a, std::move(a)) == std::partial_ordering::less);
+    assert(std::partial_order(std::move(a), std::move(a)) == std::partial_ordering::equivalent);
+
+    N13::B b;
+    static_assert(!has_partial_order(b, b));
+
+    // Test that the arguments are passed to <=> in the correct order.
+    bool c1_touched = false;
+    bool c2_touched = false;
+    N13::C c1 = {&c1_touched};
+    N13::C c2 = {&c2_touched};
+    assert(std::partial_order(c1, c2) == std::partial_ordering::equivalent);
+    assert(!c1_touched);
+    assert(c2_touched);
+
+    // For partial_order, this bullet point takes care of floating-point types;
+    // they receive their natural partial order.
+    {
+        using F = float;
+        F nan = std::numeric_limits<F>::quiet_NaN();
+        assert(std::partial_order(F(1), F(2)) == std::partial_ordering::less);
+        assert(std::partial_order(F(0), -F(0)) == std::partial_ordering::equivalent);
+#ifndef TEST_COMPILER_GCC  // GCC can't compare NaN to non-NaN in a constant-expression
+        assert(std::partial_order(nan, F(1)) == std::partial_ordering::unordered);
+#endif
+        assert(std::partial_order(nan, nan) == std::partial_ordering::unordered);
+    }
+    {
+        using F = double;
+        F nan = std::numeric_limits<F>::quiet_NaN();
+        assert(std::partial_order(F(1), F(2)) == std::partial_ordering::less);
+        assert(std::partial_order(F(0), -F(0)) == std::partial_ordering::equivalent);
+#ifndef TEST_COMPILER_GCC
+        assert(std::partial_order(nan, F(1)) == std::partial_ordering::unordered);
+#endif
+        assert(std::partial_order(nan, nan) == std::partial_ordering::unordered);
+    }
+    {
+        using F = long double;
+        F nan = std::numeric_limits<F>::quiet_NaN();
+        assert(std::partial_order(F(1), F(2)) == std::partial_ordering::less);
+        assert(std::partial_order(F(0), -F(0)) == std::partial_ordering::equivalent);
+#ifndef TEST_COMPILER_GCC
+        assert(std::partial_order(nan, F(1)) == std::partial_ordering::unordered);
+#endif
+        assert(std::partial_order(nan, nan) == std::partial_ordering::unordered);
+    }
+
+    return true;
+}
+
+namespace N14 {
+    struct A {};
+    constexpr std::strong_ordering weak_order(A&, A&&) { return std::strong_ordering::less; }
+    constexpr std::strong_ordering weak_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering weak_order(const A&, const A&);
+
+    struct B {
+        friend std::partial_ordering weak_order(B, B);
+    };
+
+    struct StrongOrder {
+        operator std::strong_ordering() const { return std::strong_ordering::less; }
+    };
+    struct C {
+        friend StrongOrder weak_order(C& lhs, C&);
+    };
+
+    struct WeakOrder {
+        constexpr explicit operator std::weak_ordering() const { return std::weak_ordering::less; }
+        operator std::partial_ordering() const = delete;
+    };
+    struct D {
+        bool touched = false;
+        friend constexpr WeakOrder weak_order(D& lhs, D&) { lhs.touched = true; return WeakOrder(); }
+    };
+}
+
+constexpr bool test_1_4()
+{
+    // Otherwise, partial_ordering(weak_order(E, F)) [that is, std::weak_order]
+    // if it is a well-formed expression.
+
+    // Test that partial_order and weak_order do not const-qualify the forwarded arguments.
+    N14::A a;
+    assert(std::partial_order(a, std::move(a)) == std::partial_ordering::less);
+    assert(std::partial_order(std::move(a), std::move(a)) == std::partial_ordering::equivalent);
+
+    // The type of ADL weak_order(e,f) must be explicitly convertible to weak_ordering
+    // (not just to partial_ordering), or else std::weak_order(e,f) won't exist.
+    N14::B b;
+    static_assert(!has_partial_order(b, b));
+
+    // The type of ADL weak_order(e,f) must be explicitly convertible to weak_ordering
+    // (not just to strong_ordering), or else std::weak_order(e,f) won't exist.
+    N14::C c;
+    static_assert(!has_partial_order(c, c));
+
+    N14::D d1, d2;
+    ASSERT_SAME_TYPE(decltype(std::partial_order(d1, d2)), std::partial_ordering);
+    assert(std::partial_order(d1, d2) == std::partial_ordering::less);
+    assert(d1.touched);
+    assert(!d2.touched);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test_1_1();
+    test_1_2();
+    test_1_3();
+    test_1_4();
+
+    static_assert(test_1_3());
+    static_assert(test_1_4());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/strong_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/strong_order.pass.cpp
new file mode 100644
index 0000000..ac6b687
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/strong_order.pass.cpp
@@ -0,0 +1,466 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T> constexpr strong_ordering strong_order(const T& a, const T& b);
+
+#include <compare>
+
+#include <cassert>
+#include <cmath>
+#include <iterator> // std::size
+#include <limits>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+#if defined(__i386__)
+ #define TEST_BUGGY_SIGNALING_NAN
+#endif
+
+template<class T, class U>
+constexpr auto has_strong_order(T&& t, U&& u)
+    -> decltype(std::strong_order(static_cast<T&&>(t), static_cast<U&&>(u)), true)
+{
+    return true;
+}
+
+constexpr bool has_strong_order(...) {
+    return false;
+}
+
+namespace N11 {
+    struct A {};
+    struct B {};
+    std::strong_ordering strong_order(const A&, const A&) { return std::strong_ordering::less; }
+    std::strong_ordering strong_order(const A&, const B&);
+}
+
+void test_1_1()
+{
+    // If the decayed types of E and F differ, strong_order(E, F) is ill-formed.
+
+    static_assert( has_strong_order(1, 2));
+    static_assert(!has_strong_order(1, (short)2));
+    static_assert(!has_strong_order(1, 2.0));
+    static_assert(!has_strong_order(1.0f, 2.0));
+
+    static_assert( has_strong_order((int*)nullptr, (int*)nullptr));
+    static_assert(!has_strong_order((int*)nullptr, (const int*)nullptr));
+    static_assert(!has_strong_order((const int*)nullptr, (int*)nullptr));
+    static_assert( has_strong_order((const int*)nullptr, (const int*)nullptr));
+
+    N11::A a;
+    N11::B b;
+    static_assert( has_strong_order(a, a));
+    static_assert(!has_strong_order(a, b));
+}
+
+namespace N12 {
+    struct A {};
+    std::strong_ordering strong_order(A&, A&&) { return std::strong_ordering::less; }
+    std::strong_ordering strong_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering strong_order(const A&, const A&);
+
+    struct B {
+        friend std::weak_ordering strong_order(B&, B&);
+    };
+
+    struct StrongOrder {
+        explicit operator std::strong_ordering() const { return std::strong_ordering::less; }
+    };
+    struct C {
+        bool touched = false;
+        friend StrongOrder strong_order(C& lhs, C&) { lhs.touched = true; return StrongOrder(); }
+    };
+}
+
+void test_1_2()
+{
+    // Otherwise, strong_ordering(strong_order(E, F))
+    // if it is a well-formed expression with overload resolution performed
+    // in a context that does not include a declaration of std::strong_order.
+
+    // Test that strong_order does not const-qualify the forwarded arguments.
+    N12::A a;
+    assert(std::strong_order(a, std::move(a)) == std::strong_ordering::less);
+    assert(std::strong_order(std::move(a), std::move(a)) == std::strong_ordering::equal);
+
+    // The type of strong_order(e,f) must be explicitly convertible to strong_ordering.
+    N12::B b;
+    static_assert(!has_strong_order(b, b));
+
+    N12::C c1, c2;
+    ASSERT_SAME_TYPE(decltype(std::strong_order(c1, c2)), std::strong_ordering);
+    assert(std::strong_order(c1, c2) == std::strong_ordering::less);
+    assert(c1.touched);
+    assert(!c2.touched);
+}
+
+template<class F>
+constexpr bool test_1_3()
+{
+    // Otherwise, if the decayed type T of E is a floating-point type,
+    // yields a value of type strong_ordering that is consistent with
+    // the ordering observed by T's comparison operators,
+    // and if numeric_limits<T>::is_iec559 is true, is additionally consistent with
+    // the totalOrder operation as specified in ISO/IEC/IEEE 60559.
+
+    static_assert(std::numeric_limits<F>::is_iec559);
+
+    ASSERT_SAME_TYPE(decltype(std::strong_order(F(0), F(0))), std::strong_ordering);
+
+    F v[] = {
+        -std::numeric_limits<F>::infinity(),
+        std::numeric_limits<F>::lowest(),  // largest (finite) negative number
+        F(-1.0), F(-0.1),
+        -std::numeric_limits<F>::min(),    // smallest (normal) negative number
+        F(-0.0),                           // negative zero
+        F(0.0),
+        std::numeric_limits<F>::min(),     // smallest (normal) positive number
+        F(0.1), F(1.0), F(2.0), F(3.14),
+        std::numeric_limits<F>::max(),     // largest (finite) positive number
+        std::numeric_limits<F>::infinity(),
+    };
+
+    static_assert(std::size(v) == 14);
+
+    // Sanity-check that array 'v' is indeed in the right order.
+    for (int i=0; i < 14; ++i) {
+        for (int j=0; j < 14; ++j) {
+            auto naturalOrder = (v[i] <=> v[j]);
+            if (v[i] == 0 && v[j] == 0) {
+                assert(naturalOrder == std::partial_ordering::equivalent);
+            } else {
+                assert(naturalOrder == std::partial_ordering::unordered || naturalOrder == (i <=> j));
+            }
+        }
+    }
+
+    assert(std::strong_order(v[0], v[0]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[0], v[1]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[2]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[3]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[4]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[5]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[6]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[0], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[1], v[1]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[1], v[2]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[3]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[4]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[5]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[6]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[1], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[2], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[2], v[2]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[2], v[3]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[4]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[5]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[6]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[2], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[3], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[3], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[3], v[3]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[3], v[4]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[5]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[6]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[3], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[4], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[4], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[4], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[4], v[4]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[4], v[5]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[6]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[4], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[5], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[5], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[5], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[5], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[5], v[5]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[5], v[6]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[5], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[6], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[6], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[6], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[6], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[6], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[6], v[6]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[6], v[7]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[6], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[7], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[7], v[7]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[7], v[8]) == std::strong_ordering::less);
+    assert(std::strong_order(v[7], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[7], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[7], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[7], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[7], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[8], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[7]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[8], v[8]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[8], v[9]) == std::strong_ordering::less);
+    assert(std::strong_order(v[8], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[8], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[8], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[8], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[9], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[7]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[8]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[9], v[9]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[9], v[10]) == std::strong_ordering::less);
+    assert(std::strong_order(v[9], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[9], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[9], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[10], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[7]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[8]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[9]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[10], v[10]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[10], v[11]) == std::strong_ordering::less);
+    assert(std::strong_order(v[10], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[10], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[11], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[7]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[8]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[9]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[10]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[11], v[11]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[11], v[12]) == std::strong_ordering::less);
+    assert(std::strong_order(v[11], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[12], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[7]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[8]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[9]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[10]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[11]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[12], v[12]) == std::strong_ordering::equal);
+    assert(std::strong_order(v[12], v[13]) == std::strong_ordering::less);
+    assert(std::strong_order(v[13], v[0]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[1]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[2]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[3]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[4]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[5]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[6]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[7]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[8]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[9]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[10]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[11]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[12]) == std::strong_ordering::greater);
+    assert(std::strong_order(v[13], v[13]) == std::strong_ordering::equal);
+
+
+    // There's no way to produce a specifically positive or negative NAN
+    // at compile-time, so the NAN-related tests must be runtime-only.
+    // Also, x86-32 (x87 floating point) cannot handle signaling NANs;
+    // see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57484 for context.
+
+    if (!std::is_constant_evaluated()) {
+        F nq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(-1));
+        F ns = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(-1));
+        F ps = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(+1));
+        F pq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(+1));
+
+        assert(std::strong_order(nq, nq) == std::strong_ordering::equal);
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::strong_order(nq, ns) == std::strong_ordering::less);
+#endif
+        for (int i=0; i < 14; ++i) {
+            assert(std::strong_order(nq, v[i]) == std::strong_ordering::less);
+        }
+        assert(std::strong_order(nq, ps) == std::strong_ordering::less);
+        assert(std::strong_order(nq, pq) == std::strong_ordering::less);
+
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::strong_order(ns, nq) == std::strong_ordering::greater);
+#endif
+        assert(std::strong_order(ns, ns) == std::strong_ordering::equal);
+        for (int i=0; i < 14; ++i) {
+            assert(std::strong_order(ns, v[i]) == std::strong_ordering::less);
+        }
+        assert(std::strong_order(ns, ps) == std::strong_ordering::less);
+        assert(std::strong_order(ns, pq) == std::strong_ordering::less);
+
+        assert(std::strong_order(ps, nq) == std::strong_ordering::greater);
+        assert(std::strong_order(ps, ns) == std::strong_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::strong_order(ps, v[i]) == std::strong_ordering::greater);
+        }
+        assert(std::strong_order(ps, ps) == std::strong_ordering::equal);
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::strong_order(ps, pq) == std::strong_ordering::less);
+#endif
+
+        assert(std::strong_order(pq, nq) == std::strong_ordering::greater);
+        assert(std::strong_order(pq, ns) == std::strong_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::strong_order(pq, v[i]) == std::strong_ordering::greater);
+        }
+#ifndef TEST_BUGGY_SIGNALING_NAN
+        assert(std::strong_order(pq, ps) == std::strong_ordering::greater);
+#endif
+        assert(std::strong_order(pq, pq) == std::strong_ordering::equal);
+    }
+
+    return true;
+}
+
+namespace N14 {
+    // Compare to N12::A.
+    struct A {};
+    bool operator==(const A&, const A&);
+    constexpr std::strong_ordering operator<=>(A&, A&&) { return std::strong_ordering::less; }
+    constexpr std::strong_ordering operator<=>(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering operator<=>(const A&, const A&);
+    static_assert(std::three_way_comparable<A>);
+
+    struct B {
+        std::strong_ordering operator<=>(const B&) const;  // lacks operator==
+    };
+    static_assert(!std::three_way_comparable<B>);
+
+    struct C {
+        bool *touched;
+        bool operator==(const C&) const;
+        constexpr std::strong_ordering operator<=>(const C& rhs) const {
+            *rhs.touched = true;
+            return std::strong_ordering::equal;
+        }
+    };
+    static_assert(std::three_way_comparable<C>);
+}
+
+constexpr bool test_1_4()
+{
+    // Otherwise, strong_ordering(compare_three_way()(E, F)) if it is a well-formed expression.
+
+    // Test neither strong_order nor compare_three_way const-qualify the forwarded arguments.
+    N14::A a;
+    assert(std::strong_order(a, std::move(a)) == std::strong_ordering::less);
+    assert(std::strong_order(std::move(a), std::move(a)) == std::strong_ordering::equal);
+
+    N14::B b;
+    static_assert(!has_strong_order(b, b));
+
+    // Test that the arguments are passed to <=> in the correct order.
+    bool c1_touched = false;
+    bool c2_touched = false;
+    N14::C c1 = {&c1_touched};
+    N14::C c2 = {&c2_touched};
+    assert(std::strong_order(c1, c2) == std::strong_ordering::equal);
+    assert(!c1_touched);
+    assert(c2_touched);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test_1_1();
+    test_1_2();
+    test_1_3<float>();
+    test_1_3<double>();
+    // test_1_3<long double>();  // UNIMPLEMENTED
+    test_1_4();
+
+    static_assert(test_1_3<float>());
+    static_assert(test_1_3<double>());
+    // static_assert(test_1_3<long double>());  // UNIMPLEMENTED
+    static_assert(test_1_4());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/strong_order_long_double.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/strong_order_long_double.verify.cpp
new file mode 100644
index 0000000..1a9289c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/strong_order_long_double.verify.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// The following platforms have sizeof(long double) == sizeof(double), so this test doesn't apply to them.
+// This test does apply to aarch64 where Arm's AAPCS64 is followed. There they are different sizes.
+// UNSUPPORTED: target={{arm64|armv(7|8)(l|m)?|powerpc|powerpc64}}-{{.+}}
+// MSVC configurations have long double equal to regular double on all
+// architectures.
+// UNSUPPORTED: target={{.+}}-pc-windows-msvc
+// ARM/AArch64 MinGW also has got long double equal to regular double, just
+// like MSVC (thus match both MinGW and MSVC here, for those architectures).
+// UNSUPPORTED: target={{aarch64|armv7}}-{{.*}}-windows-{{.+}}
+// Android's 32-bit x86 target has long double equal to regular double.
+// UNSUPPORTED: target=i686-{{.+}}-android{{.*}}
+
+// <compare>
+
+// template<class T> constexpr strong_ordering strong_order(const T& a, const T& b);
+
+// libc++ does not support strong_order(long double, long double) quite yet.
+// This test verifies the error message we give for that case.
+// TODO: remove this test once long double is properly supported.
+
+#include <compare>
+
+#include "test_macros.h"
+
+void f() {
+    long double ld = 3.14;
+    (void)std::strong_order(ld, ld);  // expected-error@*:* {{std::strong_order is unimplemented for this floating-point type}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/weak_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/weak_order.pass.cpp
new file mode 100644
index 0000000..09d7201
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.alg/weak_order.pass.cpp
@@ -0,0 +1,513 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T> constexpr weak_ordering weak_order(const T& a, const T& b);
+
+#include <compare>
+
+#include <cassert>
+#include <cmath>
+#include <iterator> // std::size
+#include <limits>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template<class T, class U>
+constexpr auto has_weak_order(T&& t, U&& u)
+    -> decltype(std::weak_order(static_cast<T&&>(t), static_cast<U&&>(u)), true)
+{
+    return true;
+}
+
+constexpr bool has_weak_order(...) {
+    return false;
+}
+
+namespace N11 {
+    struct A {};
+    struct B {};
+    std::strong_ordering weak_order(const A&, const A&) { return std::strong_ordering::less; }
+    std::strong_ordering weak_order(const A&, const B&);
+}
+
+void test_1_1()
+{
+    // If the decayed types of E and F differ, weak_order(E, F) is ill-formed.
+
+    static_assert( has_weak_order(1, 2));
+    static_assert(!has_weak_order(1, (short)2));
+    static_assert(!has_weak_order(1, 2.0));
+    static_assert(!has_weak_order(1.0f, 2.0));
+
+    static_assert( has_weak_order((int*)nullptr, (int*)nullptr));
+    static_assert(!has_weak_order((int*)nullptr, (const int*)nullptr));
+    static_assert(!has_weak_order((const int*)nullptr, (int*)nullptr));
+    static_assert( has_weak_order((const int*)nullptr, (const int*)nullptr));
+
+    N11::A a;
+    N11::B b;
+    static_assert( has_weak_order(a, a));
+    static_assert(!has_weak_order(a, b));
+}
+
+namespace N12 {
+    struct A {};
+    std::strong_ordering weak_order(A&, A&&) { return std::strong_ordering::less; }
+    std::strong_ordering weak_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering weak_order(const A&, const A&);
+
+    struct B {
+        friend std::partial_ordering weak_order(B&, B&);
+    };
+
+    struct WeakOrder {
+        explicit operator std::weak_ordering() const { return std::weak_ordering::less; }
+    };
+    struct C {
+        bool touched = false;
+        friend WeakOrder weak_order(C& lhs, C&) { lhs.touched = true; return WeakOrder(); }
+    };
+}
+
+void test_1_2()
+{
+    // Otherwise, weak_ordering(weak_order(E, F))
+    // if it is a well-formed expression with overload resolution performed
+    // in a context that does not include a declaration of std::weak_order.
+
+    // Test that weak_order does not const-qualify the forwarded arguments.
+    N12::A a;
+    assert(std::weak_order(a, std::move(a)) == std::weak_ordering::less);
+    assert(std::weak_order(std::move(a), std::move(a)) == std::weak_ordering::equivalent);
+
+    // The type of weak_order(e,f) must be explicitly convertible to weak_ordering.
+    N12::B b;
+    static_assert(!has_weak_order(b, b));
+
+    N12::C c1, c2;
+    ASSERT_SAME_TYPE(decltype(std::weak_order(c1, c2)), std::weak_ordering);
+    assert(std::weak_order(c1, c2) == std::weak_ordering::less);
+    assert(c1.touched);
+    assert(!c2.touched);
+}
+
+template<class F>
+constexpr bool test_1_3()
+{
+    // Otherwise, if the decayed type T of E is a floating-point type,
+    // yields a value of type weak_ordering that is consistent with
+    // the ordering observed by T's comparison operators and strong_order,
+    // and if numeric_limits<T>::is_iec559 is true, is additionally consistent with
+    // the following equivalence classes...
+
+    // std::numeric_limits<F>::is_iec559 is usually true.
+    // It is false for F=long double on AIX; but this test is still expected
+    // to pass (e.g. std::weak_order(+0, -0) == weak_ordering::equivalent,
+    // even on AIX).
+
+    ASSERT_SAME_TYPE(decltype(std::weak_order(F(0), F(0))), std::weak_ordering);
+
+    F v[] = {
+        -std::numeric_limits<F>::infinity(),
+        std::numeric_limits<F>::lowest(),  // largest (finite) negative number
+        F(-1.0), F(-0.1),
+        -std::numeric_limits<F>::min(),    // smallest (normal) negative number
+        F(-0.0),                           // negative zero
+        F(0.0),
+        std::numeric_limits<F>::min(),     // smallest (normal) positive number
+        F(0.1), F(1.0), F(2.0), F(3.14),
+        std::numeric_limits<F>::max(),     // largest (finite) positive number
+        std::numeric_limits<F>::infinity(),
+    };
+
+    static_assert(std::size(v) == 14);
+
+    // Sanity-check that array 'v' is indeed in the right order.
+    for (int i=0; i < 14; ++i) {
+        for (int j=0; j < 14; ++j) {
+            auto naturalOrder = (v[i] <=> v[j]);
+            if (v[i] == 0 && v[j] == 0) {
+                assert(naturalOrder == std::partial_ordering::equivalent);
+            } else {
+                assert(naturalOrder == std::partial_ordering::unordered || naturalOrder == (i <=> j));
+            }
+        }
+    }
+
+    assert(std::weak_order(v[0], v[0]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[0], v[1]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[2]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[3]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[4]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[5]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[6]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[0], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[1], v[1]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[1], v[2]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[3]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[4]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[5]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[6]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[1], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[2], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[2], v[2]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[2], v[3]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[4]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[5]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[6]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[2], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[3], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[3], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[3], v[3]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[3], v[4]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[5]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[6]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[3], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[4], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[4], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[4], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[4], v[4]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[4], v[5]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[6]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[4], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[5], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[5], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[5], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[5], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[5], v[5]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[5], v[6]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[5], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[5], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[6], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[6], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[6], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[6], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[6], v[5]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[6], v[6]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[6], v[7]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[6], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[7], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[7], v[7]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[7], v[8]) == std::weak_ordering::less);
+    assert(std::weak_order(v[7], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[7], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[7], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[7], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[7], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[8], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[7]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[8], v[8]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[8], v[9]) == std::weak_ordering::less);
+    assert(std::weak_order(v[8], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[8], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[8], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[8], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[9], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[7]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[8]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[9], v[9]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[9], v[10]) == std::weak_ordering::less);
+    assert(std::weak_order(v[9], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[9], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[9], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[10], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[7]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[8]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[9]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[10], v[10]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[10], v[11]) == std::weak_ordering::less);
+    assert(std::weak_order(v[10], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[10], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[11], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[7]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[8]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[9]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[10]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[11], v[11]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[11], v[12]) == std::weak_ordering::less);
+    assert(std::weak_order(v[11], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[12], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[7]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[8]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[9]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[10]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[11]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[12], v[12]) == std::weak_ordering::equivalent);
+    assert(std::weak_order(v[12], v[13]) == std::weak_ordering::less);
+    assert(std::weak_order(v[13], v[0]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[1]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[2]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[3]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[4]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[5]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[6]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[7]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[8]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[9]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[10]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[11]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[12]) == std::weak_ordering::greater);
+    assert(std::weak_order(v[13], v[13]) == std::weak_ordering::equivalent);
+
+
+    // There's no way to produce a specifically positive or negative NAN
+    // at compile-time, so the NAN-related tests must be runtime-only.
+
+    if (!std::is_constant_evaluated()) {
+        F nq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(-1));
+        F ns = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(-1));
+        F ps = std::copysign(std::numeric_limits<F>::signaling_NaN(), F(+1));
+        F pq = std::copysign(std::numeric_limits<F>::quiet_NaN(), F(+1));
+
+        assert(std::weak_order(nq, nq) == std::weak_ordering::equivalent);
+        assert(std::weak_order(nq, ns) == std::weak_ordering::equivalent);
+        for (int i=0; i < 14; ++i) {
+            assert(std::weak_order(nq, v[i]) == std::weak_ordering::less);
+        }
+        assert(std::weak_order(nq, ps) == std::weak_ordering::less);
+        assert(std::weak_order(nq, pq) == std::weak_ordering::less);
+
+        assert(std::weak_order(ns, nq) == std::weak_ordering::equivalent);
+        assert(std::weak_order(ns, ns) == std::weak_ordering::equivalent);
+        for (int i=0; i < 14; ++i) {
+            assert(std::weak_order(ns, v[i]) == std::weak_ordering::less);
+        }
+        assert(std::weak_order(ns, ps) == std::weak_ordering::less);
+        assert(std::weak_order(ns, pq) == std::weak_ordering::less);
+
+        assert(std::weak_order(ps, nq) == std::weak_ordering::greater);
+        assert(std::weak_order(ps, ns) == std::weak_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::weak_order(ps, v[i]) == std::weak_ordering::greater);
+        }
+        assert(std::weak_order(ps, ps) == std::weak_ordering::equivalent);
+        assert(std::weak_order(ps, pq) == std::weak_ordering::equivalent);
+
+        assert(std::weak_order(pq, nq) == std::weak_ordering::greater);
+        assert(std::weak_order(pq, ns) == std::weak_ordering::greater);
+        for (int i=0; i < 14; ++i) {
+            assert(std::weak_order(pq, v[i]) == std::weak_ordering::greater);
+        }
+        assert(std::weak_order(pq, ps) == std::weak_ordering::equivalent);
+        assert(std::weak_order(pq, pq) == std::weak_ordering::equivalent);
+    }
+
+    return true;
+}
+
+namespace N14 {
+    // Compare to N12::A.
+    struct A {};
+    bool operator==(const A&, const A&);
+    constexpr std::weak_ordering operator<=>(A&, A&&) { return std::weak_ordering::less; }
+    constexpr std::weak_ordering operator<=>(A&&, A&&) { return std::weak_ordering::equivalent; }
+    std::weak_ordering operator<=>(const A&, const A&);
+    static_assert(std::three_way_comparable<A>);
+
+    struct B {
+        std::weak_ordering operator<=>(const B&) const;  // lacks operator==
+    };
+    static_assert(!std::three_way_comparable<B>);
+
+    struct C {
+        bool *touched;
+        bool operator==(const C&) const;
+        constexpr std::weak_ordering operator<=>(const C& rhs) const {
+            *rhs.touched = true;
+            return std::weak_ordering::equivalent;
+        }
+    };
+    static_assert(std::three_way_comparable<C>);
+}
+
+constexpr bool test_1_4()
+{
+    // Otherwise, weak_ordering(compare_three_way()(E, F)) if it is a well-formed expression.
+
+    // Test neither weak_order nor compare_three_way const-qualify the forwarded arguments.
+    N14::A a;
+    assert(std::weak_order(a, std::move(a)) == std::weak_ordering::less);
+    assert(std::weak_order(std::move(a), std::move(a)) == std::weak_ordering::equivalent);
+
+    N14::B b;
+    static_assert(!has_weak_order(b, b));
+
+    // Test that the arguments are passed to <=> in the correct order.
+    bool c1_touched = false;
+    bool c2_touched = false;
+    N14::C c1 = {&c1_touched};
+    N14::C c2 = {&c2_touched};
+    assert(std::weak_order(c1, c2) == std::weak_ordering::equivalent);
+    assert(!c1_touched);
+    assert(c2_touched);
+
+    return true;
+}
+
+namespace N15 {
+    struct A {};
+    constexpr std::strong_ordering strong_order(A&, A&&) { return std::strong_ordering::less; }
+    constexpr std::strong_ordering strong_order(A&&, A&&) { return std::strong_ordering::equal; }
+    std::strong_ordering strong_order(const A&, const A&);
+
+    struct B {
+        friend std::weak_ordering strong_order(B&, B&);
+    };
+
+    struct WeakOrder {
+        operator std::weak_ordering() const { return std::weak_ordering::less; }
+    };
+    struct C {
+        friend WeakOrder strong_order(C& lhs, C&);
+    };
+
+    struct StrongOrder {
+        constexpr explicit operator std::strong_ordering() const { return std::strong_ordering::less; }
+        operator std::weak_ordering() const = delete;
+    };
+    struct D {
+        bool touched = false;
+        friend constexpr StrongOrder strong_order(D& lhs, D&) { lhs.touched = true; return StrongOrder(); }
+    };
+}
+
+constexpr bool test_1_5()
+{
+    // Otherwise, weak_ordering(strong_order(E, F)) [that is, std::strong_order]
+    // if it is a well-formed expression.
+
+    // Test that weak_order and strong_order do not const-qualify the forwarded arguments.
+    N15::A a;
+    assert(std::weak_order(a, std::move(a)) == std::weak_ordering::less);
+    assert(std::weak_order(std::move(a), std::move(a)) == std::weak_ordering::equivalent);
+
+    // The type of ADL strong_order(e,f) must be explicitly convertible to strong_ordering
+    // (not just to weak_ordering), or else std::strong_order(e,f) won't exist.
+    N15::B b;
+    static_assert(!has_weak_order(b, b));
+
+    // The type of ADL strong_order(e,f) must be explicitly convertible to strong_ordering
+    // (not just to weak_ordering), or else std::strong_order(e,f) won't exist.
+    N15::C c;
+    static_assert(!has_weak_order(c, c));
+
+    N15::D d1, d2;
+    ASSERT_SAME_TYPE(decltype(std::weak_order(d1, d2)), std::weak_ordering);
+    assert(std::weak_order(d1, d2) == std::weak_ordering::less);
+    assert(d1.touched);
+    assert(!d2.touched);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test_1_1();
+    test_1_2();
+    test_1_3<float>();
+    test_1_3<double>();
+    test_1_3<long double>();
+    test_1_4();
+    test_1_5();
+
+    static_assert(test_1_3<float>());
+    static_assert(test_1_3<double>());
+    static_assert(test_1_3<long double>());
+    static_assert(test_1_4());
+    static_assert(test_1_5());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.categories.pre/zero_type.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.categories.pre/zero_type.verify.cpp
new file mode 100644
index 0000000..6d2687f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.categories.pre/zero_type.verify.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// In MSVC mode, there's a slightly different number of errors printed for
+// each of these, so it doesn't add up to the exact expected count of 18.
+// XFAIL: msvc
+
+// <compare>
+
+// Ensure we reject all cases where an argument other than a literal 0 is used
+// for a comparison against a comparison category type.
+
+#include <compare>
+
+#define TEST_FAIL(v, op)                                                       \
+  void(v op 0L);                                                               \
+  void(0L op v);                                                               \
+  void(v op nullptr);                                                          \
+  void(nullptr op v);                                                          \
+  void(v op(1 - 1));                                                           \
+  void((1 - 1) op v)
+
+#define TEST_PASS(v, op)                                                       \
+  void(v op 0);                                                                \
+  void(0 op v)
+
+template <typename T>
+void test_category(T v) {
+  TEST_FAIL(v, ==);  // expected-error 18 {{}}
+  TEST_FAIL(v, !=);  // expected-error 18 {{}}
+  TEST_FAIL(v, <);   // expected-error 18 {{}}
+  TEST_FAIL(v, <=);  // expected-error 18 {{}}
+  TEST_FAIL(v, >);   // expected-error 18 {{}}
+  TEST_FAIL(v, >=);  // expected-error 18 {{}}
+  TEST_FAIL(v, <=>); // expected-error 18 {{}}
+
+  TEST_PASS(v, ==);
+  TEST_PASS(v, !=);
+  TEST_PASS(v, <);
+  TEST_PASS(v, >);
+  TEST_PASS(v, <=);
+  TEST_PASS(v, >=);
+  TEST_PASS(v, <=>);
+}
+
+int main(int, char**) {
+  test_category(std::strong_ordering::equivalent);
+  test_category(std::weak_ordering::equivalent);
+  test_category(std::partial_ordering::equivalent);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.common/common_comparison_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.common/common_comparison_category.pass.cpp
new file mode 100644
index 0000000..6c0efec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.common/common_comparison_category.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template <class ...Ts> struct common_comparison_category
+// template <class ...Ts> using common_comparison_category_t
+
+
+#include <compare>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+const volatile void* volatile sink;
+
+template <class Expect, class ...Args>
+void test_cat() {
+  using Cat = std::common_comparison_category<Args...>;
+  using CatT = typename Cat::type;
+  static_assert(std::is_same<CatT, std::common_comparison_category_t<Args...>>::value, "");
+  static_assert(std::is_same<CatT, Expect>::value, "expected different category");
+};
+
+
+// [class.spaceship]p4: The 'common comparison type' U of a possibly-empty list
+//   of 'n' types T0, T1, ..., TN, is defined as follows:
+int main(int, char**) {
+  using PO = std::partial_ordering;
+  using WO = std::weak_ordering;
+  using SO = std::strong_ordering;
+
+  // [cmp.common]p2: The member typedef-name type denotes the common comparison
+  /// type ([class.spaceship]) of Ts..., the expanded parameter pack, or void if
+  // any element of Ts is not a comparison category type.
+  {
+    test_cat<void, void>();
+    test_cat<void, int*>();
+    test_cat<void, SO&>();
+    test_cat<void, SO const>();
+    test_cat<void, SO*>();
+    test_cat<void, SO, void, SO>();
+  }
+
+  // [class.spaceship]p4.1: If at least one Ti is std::partial_ordering, U is
+  // std::partial_ordering ([cmp.partialord]).
+  {
+    test_cat<PO, PO>();
+    test_cat<PO, SO, PO, SO>();
+    test_cat<PO, WO, PO, SO>();
+  }
+
+  // [class.spaceship]p4.2: Otherwise, if at least one Ti is std::weak_ordering,
+  // U is std::weak_ordering
+  {
+    test_cat<WO, WO>();
+    test_cat<WO, SO, WO, SO>();
+  }
+
+  // [class.spaceship]p4.3: Otherwise, U is std::strong_ordering.
+  {
+    test_cat<SO, SO>();
+    test_cat<SO, SO, SO>();
+  }
+
+  // [cmp.common]p2, note 2: This is std::strong_ordering if the expansion is empty.
+  // [class.spaceship]p4.3, note 2: In particular this is the result when n is 0.
+  {
+    test_cat<SO>(); // empty type list
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable.compile.pass.cpp
new file mode 100644
index 0000000..d1114e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable.compile.pass.cpp
@@ -0,0 +1,224 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class Cat = partial_ordering>
+// concept three_way_comparable = // see below
+
+#include <compare>
+
+#include "compare_types.h"
+#include "test_macros.h"
+
+namespace fundamentals {
+// with default ordering
+static_assert(std::three_way_comparable<int>);
+static_assert(std::three_way_comparable<double>);
+static_assert(std::three_way_comparable<void*>);
+static_assert(std::three_way_comparable<char*>);
+static_assert(std::three_way_comparable<char const*>);
+static_assert(std::three_way_comparable<char volatile*>);
+static_assert(std::three_way_comparable<char const volatile*>);
+static_assert(std::three_way_comparable<wchar_t&>);
+#ifndef TEST_HAS_NO_CHAR8_T
+static_assert(std::three_way_comparable<char8_t const&>);
+#endif
+static_assert(std::three_way_comparable<char16_t volatile&>);
+static_assert(std::three_way_comparable<char32_t const volatile&>);
+#ifndef TEST_HAS_NO_INT128
+static_assert(std::three_way_comparable<__int128_t const&>);
+static_assert(std::three_way_comparable<__uint128_t const&>);
+#endif
+static_assert(std::three_way_comparable<unsigned char&&>);
+static_assert(std::three_way_comparable<unsigned short const&&>);
+static_assert(std::three_way_comparable<unsigned int volatile&&>);
+static_assert(std::three_way_comparable<unsigned long const volatile&&>);
+
+// with explicit ordering
+static_assert(std::three_way_comparable<int, std::strong_ordering>);
+static_assert(std::three_way_comparable<int, std::weak_ordering>);
+static_assert(std::three_way_comparable<double, std::partial_ordering>);
+static_assert(!std::three_way_comparable<double, std::weak_ordering>);
+static_assert(std::three_way_comparable<void*, std::strong_ordering>);
+static_assert(std::three_way_comparable<void*, std::weak_ordering>);
+static_assert(std::three_way_comparable<char*, std::strong_ordering>);
+static_assert(std::three_way_comparable<char*, std::weak_ordering>);
+static_assert(std::three_way_comparable<char const*, std::strong_ordering>);
+static_assert(std::three_way_comparable<char const*, std::weak_ordering>);
+static_assert(std::three_way_comparable<char volatile*, std::strong_ordering>);
+static_assert(std::three_way_comparable<char volatile*, std::weak_ordering>);
+static_assert(std::three_way_comparable<char const volatile*, std::strong_ordering>);
+static_assert(std::three_way_comparable<char const volatile*, std::weak_ordering>);
+static_assert(std::three_way_comparable<wchar_t&, std::strong_ordering>);
+static_assert(std::three_way_comparable<wchar_t&, std::weak_ordering>);
+static_assert(std::three_way_comparable<char8_t const&, std::strong_ordering>);
+static_assert(std::three_way_comparable<char8_t const&, std::weak_ordering>);
+static_assert(std::three_way_comparable<char16_t volatile&, std::strong_ordering>);
+static_assert(std::three_way_comparable<char16_t volatile&, std::weak_ordering>);
+static_assert(std::three_way_comparable<char32_t const volatile&, std::strong_ordering>);
+static_assert(std::three_way_comparable<char32_t const volatile&, std::weak_ordering>);
+static_assert(std::three_way_comparable<unsigned char&&, std::strong_ordering>);
+static_assert(std::three_way_comparable<unsigned char&&, std::weak_ordering>);
+static_assert(std::three_way_comparable<unsigned short const&&, std::strong_ordering>);
+static_assert(std::three_way_comparable<unsigned short const&&, std::weak_ordering>);
+static_assert(std::three_way_comparable<unsigned int volatile&&, std::strong_ordering>);
+static_assert(std::three_way_comparable<unsigned int volatile&&, std::weak_ordering>);
+static_assert(std::three_way_comparable<unsigned long const volatile&&, std::strong_ordering>);
+static_assert(std::three_way_comparable<unsigned long const volatile&&, std::weak_ordering>);
+
+static_assert(!std::three_way_comparable<int[5]>);
+static_assert(!std::three_way_comparable<int (*)(int)>);
+static_assert(!std::three_way_comparable<int (&)(int)>);
+static_assert(!std::three_way_comparable<int (*)(int) noexcept>);
+static_assert(!std::three_way_comparable<int (&)(int) noexcept>);
+static_assert(!std::three_way_comparable<std::nullptr_t>);
+static_assert(!std::three_way_comparable<void>);
+
+struct S {};
+static_assert(!std::three_way_comparable<int S::*>);
+static_assert(!std::three_way_comparable<int (S::*)()>);
+static_assert(!std::three_way_comparable<int (S::*)() noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() &>);
+static_assert(!std::three_way_comparable<int (S::*)() & noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() &&>);
+static_assert(!std::three_way_comparable<int (S::*)() && noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() const>);
+static_assert(!std::three_way_comparable<int (S::*)() const noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() const&>);
+static_assert(!std::three_way_comparable<int (S::*)() const & noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() const&&>);
+static_assert(!std::three_way_comparable<int (S::*)() const && noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() volatile>);
+static_assert(!std::three_way_comparable<int (S::*)() volatile noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() volatile&>);
+static_assert(!std::three_way_comparable<int (S::*)() volatile & noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() volatile&&>);
+static_assert(!std::three_way_comparable<int (S::*)() volatile && noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() const volatile>);
+static_assert(!std::three_way_comparable<int (S::*)() const volatile noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() const volatile&>);
+static_assert(!std::three_way_comparable<int (S::*)() const volatile & noexcept>);
+static_assert(!std::three_way_comparable<int (S::*)() const volatile&&>);
+static_assert(!std::three_way_comparable<int (S::*)() const volatile && noexcept>);
+} // namespace fundamentals
+
+namespace user_defined {
+
+struct S {
+    auto operator<=>(const S&) const = default;
+};
+
+static_assert(std::three_way_comparable<S>);
+static_assert(std::three_way_comparable<S, std::strong_ordering>);
+static_assert(std::three_way_comparable<S, std::partial_ordering>);
+
+struct SpaceshipNotDeclared {
+};
+
+static_assert(!std::three_way_comparable<SpaceshipNotDeclared>);
+
+struct SpaceshipDeleted {
+    auto operator<=>(const SpaceshipDeleted&) const = delete;
+};
+
+static_assert(!std::three_way_comparable<SpaceshipDeleted>);
+
+struct SpaceshipWithoutEqualityOperator {
+    auto operator<=>(const SpaceshipWithoutEqualityOperator&) const;
+};
+
+static_assert(!std::three_way_comparable<SpaceshipWithoutEqualityOperator>);
+
+struct EqualityOperatorDeleted {
+    bool operator==(const EqualityOperatorDeleted&) const = delete;
+};
+
+static_assert(!std::three_way_comparable<EqualityOperatorDeleted>);
+
+struct EqualityOperatorOnly {
+    bool operator==(const EqualityOperatorOnly&) const = default;
+};
+
+static_assert(!std::three_way_comparable<EqualityOperatorOnly>);
+
+struct SpaceshipDeclaredEqualityOperatorDeleted {
+    bool operator==(const SpaceshipDeclaredEqualityOperatorDeleted&) const = delete;
+    auto operator<=>(const SpaceshipDeclaredEqualityOperatorDeleted&) const = default;
+};
+
+static_assert(!std::three_way_comparable<SpaceshipDeclaredEqualityOperatorDeleted>);
+
+struct AllInequalityOperators {
+    bool operator<(const AllInequalityOperators&) const;
+    bool operator<=(const AllInequalityOperators&) const;
+    bool operator>(const AllInequalityOperators&) const;
+    bool operator>=(const AllInequalityOperators&) const;
+    bool operator!=(const AllInequalityOperators&) const;
+};
+
+static_assert(!std::three_way_comparable<AllInequalityOperators>);
+
+struct AllComparisonOperators {
+    bool operator<(const AllComparisonOperators&) const;
+    bool operator<=(const AllComparisonOperators&) const;
+    bool operator>(const AllComparisonOperators&) const;
+    bool operator>=(const AllComparisonOperators&) const;
+    bool operator!=(const AllComparisonOperators&) const;
+    bool operator==(const AllComparisonOperators&) const;
+};
+
+static_assert(!std::three_way_comparable<AllComparisonOperators>);
+
+struct AllButOneInequalityOperators {
+    bool operator<(const AllButOneInequalityOperators&) const;
+    bool operator<=(const AllButOneInequalityOperators&) const;
+    bool operator>(const AllButOneInequalityOperators&) const;
+    bool operator!=(const AllButOneInequalityOperators&) const;
+};
+
+static_assert(!std::three_way_comparable<AllButOneInequalityOperators>);
+
+struct AllInequalityOperatorsOneDeleted {
+    bool operator<(const AllInequalityOperatorsOneDeleted&) const;
+    bool operator<=(const AllInequalityOperatorsOneDeleted&) const;
+    bool operator>(const AllInequalityOperatorsOneDeleted&) const;
+    bool operator>=(const AllInequalityOperatorsOneDeleted&) const = delete;
+    bool operator!=(const AllInequalityOperatorsOneDeleted&) const;
+};
+
+static_assert(!std::three_way_comparable<AllInequalityOperatorsOneDeleted>);
+
+struct EqualityOperatorWrongReturnType {
+    int operator==(const EqualityOperatorWrongReturnType&);
+    auto operator<=>(const EqualityOperatorWrongReturnType&) const = default;
+};
+
+static_assert(!std::three_way_comparable<EqualityOperatorWrongReturnType>);
+
+struct SpaceshipWrongReturnType {
+    bool operator==(const SpaceshipWrongReturnType&) const = default;
+    int operator<=>(const SpaceshipWrongReturnType&);
+};
+
+static_assert(!std::three_way_comparable<SpaceshipWrongReturnType>);
+
+struct EqualityOperatorNonConstArgument {
+    bool operator==(EqualityOperatorNonConstArgument&);
+    auto operator<=>(const EqualityOperatorNonConstArgument&) const = default;
+};
+
+static_assert(!std::three_way_comparable<EqualityOperatorNonConstArgument>);
+
+struct SpaceshipNonConstArgument {
+    bool operator==(const SpaceshipNonConstArgument&) const = default;
+    auto operator<=>(SpaceshipNonConstArgument&);
+};
+
+static_assert(!std::three_way_comparable<SpaceshipNonConstArgument>);
+} // namespace user_defined
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable_with.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable_with.compile.pass.cpp
new file mode 100644
index 0000000..50d9722
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.concept/three_way_comparable_with.compile.pass.cpp
@@ -0,0 +1,226 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class U, class Cat = partial_ordering>
+// concept three_way_comparable_with = // see below
+
+#include <compare>
+
+#include "compare_types.h"
+
+template <class T, class U = T, typename Cat = std::partial_ordering>
+constexpr bool check_three_way_comparable_with() {
+  constexpr bool result = std::three_way_comparable_with<T, U, Cat>;
+  static_assert(std::three_way_comparable_with<U, T, Cat> == result);
+  static_assert(std::three_way_comparable_with<T, U const, Cat> == result);
+  static_assert(std::three_way_comparable_with<T const, U const, Cat> == result);
+  static_assert(std::three_way_comparable_with<T, U const&, Cat> == result);
+  static_assert(std::three_way_comparable_with<T const, U const&, Cat> == result);
+  static_assert(std::three_way_comparable_with<T, U const&&, Cat> == result);
+  static_assert(std::three_way_comparable_with<T const, U const&&, Cat> == result);
+  if constexpr (!std::is_void_v<T>) {
+    static_assert(std::three_way_comparable_with<T&, U const, Cat> == result);
+    static_assert(std::three_way_comparable_with<T const&, U const, Cat> == result);
+    static_assert(std::three_way_comparable_with<T&, U const&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T const&, U const&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T&, U const&&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T const&, U const&&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T&&, U const, Cat> == result);
+    static_assert(std::three_way_comparable_with<T const&&, U const, Cat> == result);
+    static_assert(std::three_way_comparable_with<T&&, U const&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T const&&, U const&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T&&, U const&&, Cat> == result);
+    static_assert(std::three_way_comparable_with<T const&&, U const&&, Cat> == result);
+  }
+  return result;
+}
+
+namespace fundamentals {
+static_assert(check_three_way_comparable_with<int, int>());
+static_assert(check_three_way_comparable_with<int, char>());
+static_assert(!check_three_way_comparable_with<int, unsigned int>());
+static_assert(check_three_way_comparable_with<int, double>());
+static_assert(check_three_way_comparable_with<int*, int*>());
+
+static_assert(check_three_way_comparable_with<int, int, std::strong_ordering>());
+static_assert(check_three_way_comparable_with<int, char, std::strong_ordering>());
+static_assert(check_three_way_comparable_with<int, short, std::strong_ordering>());
+
+static_assert(check_three_way_comparable_with<int, int, std::weak_ordering>());
+static_assert(check_three_way_comparable_with<int, char, std::weak_ordering>());
+static_assert(!check_three_way_comparable_with<int, unsigned int, std::weak_ordering>());
+
+static_assert(!check_three_way_comparable_with<int, bool>());
+static_assert(!check_three_way_comparable_with<int, int*>());
+static_assert(!check_three_way_comparable_with<int, int[5]>());
+static_assert(!check_three_way_comparable_with<int, int (*)()>());
+static_assert(!check_three_way_comparable_with<int, int (&)()>());
+struct S {};
+static_assert(!check_three_way_comparable_with<int, int S::*>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)()>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() volatile>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() volatile noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const volatile>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const volatile noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() &>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() & noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const & noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() volatile&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() volatile & noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const volatile&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const volatile & noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() &&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() && noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const&&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const&& noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() volatile&&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() volatile&& noexcept>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const volatile&&>());
+static_assert(!check_three_way_comparable_with<int, int (S::*)() const volatile&& noexcept>());
+static_assert(!check_three_way_comparable_with<int*, int[5]>());
+static_assert(!check_three_way_comparable_with<int[5], int[5]>());
+static_assert(!check_three_way_comparable_with<std::nullptr_t, int>());
+static_assert(!check_three_way_comparable_with<std::nullptr_t, int*>());
+static_assert(!check_three_way_comparable_with<std::nullptr_t, int[5]>());
+static_assert(!check_three_way_comparable_with<std::nullptr_t, int (*)()>());
+static_assert(!check_three_way_comparable_with<std::nullptr_t, int (&)()>());
+static_assert(!check_three_way_comparable_with<std::nullptr_t, int (S::*)()>());
+static_assert(!check_three_way_comparable_with<void, int>());
+static_assert(!check_three_way_comparable_with<void, int*>());
+static_assert(!check_three_way_comparable_with<void, std::nullptr_t>());
+static_assert(!check_three_way_comparable_with<void, int[5]>());
+static_assert(!check_three_way_comparable_with<void, int (*)()>());
+static_assert(!check_three_way_comparable_with<void, int (&)()>());
+static_assert(!check_three_way_comparable_with<void, int S::*>());
+static_assert(!check_three_way_comparable_with<void, int (S::*)()>());
+} // namespace fundamentals
+
+namespace user_defined {
+struct S {
+    bool operator==(int) const;
+    std::strong_ordering operator<=>(int) const;
+    operator int() const;
+
+    bool operator==(const S&) const = default;
+    auto operator<=>(const S&) const = default;
+};
+
+static_assert(check_three_way_comparable_with<S, int>());
+static_assert(check_three_way_comparable_with<S, int, std::strong_ordering>());
+static_assert(check_three_way_comparable_with<S, int, std::weak_ordering>());
+
+struct SpaceshipNotDeclared {
+};
+
+static_assert(!check_three_way_comparable_with<SpaceshipNotDeclared>());
+
+struct SpaceshipDeleted {
+    auto operator<=>(const SpaceshipDeleted&) const = delete;
+};
+
+static_assert(!check_three_way_comparable_with<SpaceshipDeleted>());
+
+struct SpaceshipWithoutEqualityOperator {
+    auto operator<=>(const SpaceshipWithoutEqualityOperator&) const;
+};
+
+static_assert(!check_three_way_comparable_with<SpaceshipWithoutEqualityOperator>());
+
+struct EqualityOperatorDeleted {
+    bool operator==(const EqualityOperatorDeleted&) const = delete;
+};
+
+static_assert(!check_three_way_comparable_with<EqualityOperatorDeleted>());
+
+struct EqualityOperatorOnly {
+    bool operator==(const EqualityOperatorOnly&) const = default;
+};
+
+static_assert(!check_three_way_comparable_with<EqualityOperatorOnly>());
+
+struct SpaceshipDeclaredEqualityOperatorDeleted {
+    bool operator==(const SpaceshipDeclaredEqualityOperatorDeleted&) const = delete;
+    auto operator<=>(const SpaceshipDeclaredEqualityOperatorDeleted&) const = default;
+};
+
+static_assert(!check_three_way_comparable_with<SpaceshipDeclaredEqualityOperatorDeleted>());
+
+struct AllInequalityOperators {
+    bool operator<(const AllInequalityOperators&) const;
+    bool operator<=(const AllInequalityOperators&) const;
+    bool operator>(const AllInequalityOperators&) const;
+    bool operator>=(const AllInequalityOperators&) const;
+    bool operator!=(const AllInequalityOperators&) const;
+};
+
+static_assert(!check_three_way_comparable_with<AllInequalityOperators>());
+
+struct AllComparisonOperators {
+    bool operator<(const AllComparisonOperators&) const;
+    bool operator<=(const AllComparisonOperators&) const;
+    bool operator>(const AllComparisonOperators&) const;
+    bool operator>=(const AllComparisonOperators&) const;
+    bool operator!=(const AllComparisonOperators&) const;
+    bool operator==(const AllComparisonOperators&) const;
+};
+
+static_assert(!check_three_way_comparable_with<AllComparisonOperators>());
+
+struct AllButOneInequalityOperators {
+    bool operator<(const AllButOneInequalityOperators&) const;
+    bool operator<=(const AllButOneInequalityOperators&) const;
+    bool operator>(const AllButOneInequalityOperators&) const;
+    bool operator!=(const AllButOneInequalityOperators&) const;
+};
+
+static_assert(!check_three_way_comparable_with<AllButOneInequalityOperators>());
+
+struct AllInequalityOperatorsOneDeleted {
+    bool operator<(const AllInequalityOperatorsOneDeleted&) const;
+    bool operator<=(const AllInequalityOperatorsOneDeleted&) const;
+    bool operator>(const AllInequalityOperatorsOneDeleted&) const;
+    bool operator>=(const AllInequalityOperatorsOneDeleted&) const = delete;
+    bool operator!=(const AllInequalityOperatorsOneDeleted&) const;
+};
+
+static_assert(!check_three_way_comparable_with<AllInequalityOperatorsOneDeleted>());
+
+struct EqualityOperatorWrongReturnType {
+    int operator==(const EqualityOperatorWrongReturnType&);
+    auto operator<=>(const EqualityOperatorWrongReturnType&) const = default;
+};
+
+static_assert(!check_three_way_comparable_with<EqualityOperatorWrongReturnType>());
+
+struct SpaceshipWrongReturnType {
+    bool operator==(const SpaceshipWrongReturnType&) const = default;
+    int operator<=>(const SpaceshipWrongReturnType&);
+};
+
+static_assert(!check_three_way_comparable_with<SpaceshipWrongReturnType>());
+
+struct EqualityOperatorNonConstArgument {
+    bool operator==(EqualityOperatorNonConstArgument&);
+    auto operator<=>(const EqualityOperatorNonConstArgument&) const = default;
+};
+
+static_assert(!check_three_way_comparable_with<EqualityOperatorNonConstArgument>());
+
+struct SpaceshipNonConstArgument {
+    bool operator==(const SpaceshipNonConstArgument&) const = default;
+    auto operator<=>(SpaceshipNonConstArgument&);
+};
+
+static_assert(!check_three_way_comparable_with<SpaceshipNonConstArgument>());
+} // namespace user_defined
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.partialord/partialord.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.partialord/partialord.pass.cpp
new file mode 100644
index 0000000..7d0ddb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.partialord/partialord.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// class partial_ordering
+
+
+#include <compare>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+const volatile void* volatile sink;
+
+void test_static_members() {
+  DoNotOptimize(&std::partial_ordering::less);
+  DoNotOptimize(&std::partial_ordering::equivalent);
+  DoNotOptimize(&std::partial_ordering::greater);
+  DoNotOptimize(&std::partial_ordering::unordered);
+}
+
+void test_signatures() {
+  auto& Eq = std::partial_ordering::equivalent;
+
+  ASSERT_NOEXCEPT(Eq == 0);
+  ASSERT_NOEXCEPT(0 == Eq);
+  ASSERT_NOEXCEPT(Eq != 0);
+  ASSERT_NOEXCEPT(0 != Eq);
+  ASSERT_NOEXCEPT(0 < Eq);
+  ASSERT_NOEXCEPT(Eq < 0);
+  ASSERT_NOEXCEPT(0 <= Eq);
+  ASSERT_NOEXCEPT(Eq <= 0);
+  ASSERT_NOEXCEPT(0 > Eq);
+  ASSERT_NOEXCEPT(Eq > 0);
+  ASSERT_NOEXCEPT(0 >= Eq);
+  ASSERT_NOEXCEPT(Eq >= 0);
+  ASSERT_NOEXCEPT(0 <=> Eq);
+  ASSERT_NOEXCEPT(Eq <=> 0);
+  ASSERT_SAME_TYPE(decltype(Eq <=> 0), std::partial_ordering);
+  ASSERT_SAME_TYPE(decltype(0 <=> Eq), std::partial_ordering);
+}
+
+constexpr void test_equality() {
+  auto& PartialEq = std::partial_ordering::equivalent;
+  auto& WeakEq = std::weak_ordering::equivalent;
+  assert(PartialEq == WeakEq);
+
+  auto& StrongEq = std::strong_ordering::equal;
+  assert(PartialEq == StrongEq);
+}
+
+constexpr bool test_constexpr() {
+  auto& Eq = std::partial_ordering::equivalent;
+  auto& Less = std::partial_ordering::less;
+  auto& Greater = std::partial_ordering::greater;
+  auto& Unord = std::partial_ordering::unordered;
+  struct {
+    std::partial_ordering Value;
+    bool ExpectEq;
+    bool ExpectNeq;
+    bool ExpectLess;
+    bool ExpectGreater;
+  } TestCases[] = {
+      {Eq, true, false, false, false},
+      {Less, false, true, true, false},
+      {Greater, false, true, false, true},
+      {Unord, false, true, false, false}
+  };
+  for (auto TC : TestCases) {
+    auto V = TC.Value;
+    assert((V == 0) == TC.ExpectEq);
+    assert((0 == V) == TC.ExpectEq);
+    assert((V != 0) == TC.ExpectNeq);
+    assert((0 != V) == TC.ExpectNeq);
+
+    assert((V < 0) == TC.ExpectLess);
+    assert((V > 0) == TC.ExpectGreater);
+    assert((V <= 0) == (TC.ExpectLess || TC.ExpectEq));
+    assert((V >= 0) == (TC.ExpectGreater || TC.ExpectEq));
+
+    assert((0 < V) == TC.ExpectGreater);
+    assert((0 > V) == TC.ExpectLess);
+    assert((0 <= V) == (TC.ExpectGreater || TC.ExpectEq));
+    assert((0 >= V) == (TC.ExpectLess || TC.ExpectEq));
+  }
+  {
+    std::partial_ordering res = (Eq <=> 0);
+    ((void)res);
+    res = (0 <=> Eq);
+    ((void)res);
+  }
+  enum ExpectRes {
+    ER_Greater,
+    ER_Less,
+    ER_Equiv,
+    ER_Unord
+  };
+  struct {
+    std::partial_ordering Value;
+    ExpectRes Expect;
+  } SpaceshipTestCases[] = {
+      {std::partial_ordering::equivalent, ER_Equiv},
+      {std::partial_ordering::less, ER_Less},
+      {std::partial_ordering::greater, ER_Greater},
+      {std::partial_ordering::unordered, ER_Unord}
+  };
+  for (auto TC : SpaceshipTestCases)
+  {
+    std::partial_ordering Res = (TC.Value <=> 0);
+    switch (TC.Expect) {
+    case ER_Equiv:
+      assert(Res == 0);
+      assert(0 == Res);
+      break;
+    case ER_Less:
+      assert(Res < 0);
+      break;
+    case ER_Greater:
+      assert(Res > 0);
+      break;
+    case ER_Unord:
+      assert(Res != 0);
+      assert(0 != Res);
+      assert((Res < 0) == false);
+      assert((Res > 0) == false);
+      assert((Res == 0) == false);
+      break;
+    }
+  }
+  {
+    static_assert(std::partial_ordering::less == std::partial_ordering::less);
+    static_assert(std::partial_ordering::less !=
+                  std::partial_ordering::equivalent);
+    static_assert(std::partial_ordering::less !=
+                  std::partial_ordering::greater);
+    static_assert(std::partial_ordering::less !=
+                  std::partial_ordering::unordered);
+
+    static_assert(std::partial_ordering::equivalent !=
+                  std::partial_ordering::less);
+    static_assert(std::partial_ordering::equivalent ==
+                  std::partial_ordering::equivalent);
+    static_assert(std::partial_ordering::equivalent !=
+                  std::partial_ordering::greater);
+    static_assert(std::partial_ordering::equivalent !=
+                  std::partial_ordering::unordered);
+
+    static_assert(std::partial_ordering::greater !=
+                  std::partial_ordering::less);
+    static_assert(std::partial_ordering::greater !=
+                  std::partial_ordering::equivalent);
+    static_assert(std::partial_ordering::greater ==
+                  std::partial_ordering::greater);
+    static_assert(std::partial_ordering::greater !=
+                  std::partial_ordering::unordered);
+
+    static_assert(std::partial_ordering::unordered !=
+                  std::partial_ordering::less);
+    static_assert(std::partial_ordering::unordered !=
+                  std::partial_ordering::equivalent);
+    static_assert(std::partial_ordering::unordered !=
+                  std::partial_ordering::greater);
+    static_assert(std::partial_ordering::unordered ==
+                  std::partial_ordering::unordered);
+  }
+
+  test_equality();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_static_members();
+  test_signatures();
+  test_equality();
+  static_assert(test_constexpr(), "constexpr test failed");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.result/compare_three_way_result.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.result/compare_three_way_result.compile.pass.cpp
new file mode 100644
index 0000000..d3fbf29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.result/compare_three_way_result.compile.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// template<class T, class U = T> struct compare_three_way_result;
+// template<class T, class U = T>
+//   using compare_three_way_result_t = typename compare_three_way_result<T, U>::type;
+
+#include <compare>
+
+#include "test_macros.h"
+
+template<class T>
+concept has_no_nested_type = !requires { typename T::type; };
+
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<int>, std::strong_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<float>, std::partial_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<unsigned>, std::strong_ordering);
+
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<int, int>, std::strong_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<int, float>, std::partial_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<float, int>, std::partial_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<float, float>, std::partial_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<float, unsigned>, std::partial_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<unsigned, float>, std::partial_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<unsigned, unsigned>, std::strong_ordering);
+
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const int&>, std::strong_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const int&, int>, std::strong_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const int*>, std::strong_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const int*, int*>, std::strong_ordering);
+
+static_assert(has_no_nested_type<std::compare_three_way_result<void>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<void, void>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<int, void>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<int, int*>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<int, unsigned>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<unsigned, int>>);
+
+struct A {
+    float operator<=>(const A&) const;  // a non-comparison-category type is OK
+};
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<A>, float);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<A, A>, float);
+
+struct B {
+    using T = int(&)();
+    T operator<=>(const B&) const;  // no decay takes place either
+};
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<B>, int(&)());
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<B, B>, int(&)());
+
+struct C {
+    std::strong_ordering operator<=>(C&);  // C isn't const-comparable
+};
+static_assert(has_no_nested_type<std::compare_three_way_result<C>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<C&>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<C&&>>);
+
+static_assert(has_no_nested_type<std::compare_three_way_result<C, C>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<C&, C&>>);
+static_assert(has_no_nested_type<std::compare_three_way_result<C&&, C&&>>);
+
+struct D {
+    std::strong_ordering operator<=>(D&) &;
+    std::strong_ordering operator<=>(D&&) &&;
+    std::weak_ordering operator<=>(const D&) const&;  // comparison is always done by const&
+    std::strong_ordering operator<=>(const D&&) const&&;
+};
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<D>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<D&>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<D&&>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const D&>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const D&&>, std::weak_ordering);
+
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<D, D>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<D&, D&>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<D&&, D&&>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const D&, const D&>, std::weak_ordering);
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<const D&&, const D&&>, std::weak_ordering);
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.strongord/strongord.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.strongord/strongord.pass.cpp
new file mode 100644
index 0000000..cefea50
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.strongord/strongord.pass.cpp
@@ -0,0 +1,197 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// class strong_ordering
+
+
+#include <compare>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+const volatile void* volatile sink;
+
+void test_static_members() {
+  DoNotOptimize(&std::strong_ordering::less);
+  DoNotOptimize(&std::strong_ordering::equal);
+  DoNotOptimize(&std::strong_ordering::equivalent);
+  DoNotOptimize(&std::strong_ordering::greater);
+}
+
+void test_signatures() {
+  auto& Eq = std::strong_ordering::equivalent;
+
+  ASSERT_NOEXCEPT(Eq == 0);
+  ASSERT_NOEXCEPT(0 == Eq);
+  ASSERT_NOEXCEPT(Eq != 0);
+  ASSERT_NOEXCEPT(0 != Eq);
+  ASSERT_NOEXCEPT(0 < Eq);
+  ASSERT_NOEXCEPT(Eq < 0);
+  ASSERT_NOEXCEPT(0 <= Eq);
+  ASSERT_NOEXCEPT(Eq <= 0);
+  ASSERT_NOEXCEPT(0 > Eq);
+  ASSERT_NOEXCEPT(Eq > 0);
+  ASSERT_NOEXCEPT(0 >= Eq);
+  ASSERT_NOEXCEPT(Eq >= 0);
+  ASSERT_NOEXCEPT(0 <=> Eq);
+  ASSERT_NOEXCEPT(Eq <=> 0);
+  ASSERT_SAME_TYPE(decltype(Eq <=> 0), std::strong_ordering);
+  ASSERT_SAME_TYPE(decltype(0 <=> Eq), std::strong_ordering);
+}
+
+constexpr void test_equality() {
+  auto& StrongEq = std::strong_ordering::equal;
+  auto& PartialEq = std::partial_ordering::equivalent;
+  assert(StrongEq == PartialEq);
+
+  auto& WeakEq = std::weak_ordering::equivalent;
+  assert(StrongEq == WeakEq);
+}
+
+constexpr bool test_conversion() {
+  static_assert(std::is_convertible<const std::strong_ordering&,
+      std::partial_ordering>::value, "");
+  { // value == 0
+    auto V = std::strong_ordering::equivalent;
+    std::partial_ordering WV = V;
+    assert(WV == 0);
+  }
+  { // value < 0
+    auto V = std::strong_ordering::less;
+    std::partial_ordering WV = V;
+    assert(WV < 0);
+  }
+  { // value > 0
+    auto V = std::strong_ordering::greater;
+    std::partial_ordering WV = V;
+    assert(WV > 0);
+  }
+
+  static_assert(std::is_convertible<const std::strong_ordering&,
+      std::weak_ordering>::value, "");
+  { // value == 0
+    auto V = std::strong_ordering::equivalent;
+    std::weak_ordering WV = V;
+    assert(WV == 0);
+  }
+  { // value < 0
+    auto V = std::strong_ordering::less;
+    std::weak_ordering WV = V;
+    assert(WV < 0);
+  }
+  { // value > 0
+    auto V = std::strong_ordering::greater;
+    std::weak_ordering WV = V;
+    assert(WV > 0);
+  }
+  return true;
+}
+
+constexpr bool test_constexpr() {
+  auto& Eq = std::strong_ordering::equal;
+  auto& Equiv = std::strong_ordering::equivalent;
+  auto& Less = std::strong_ordering::less;
+  auto& Greater = std::strong_ordering::greater;
+  struct {
+    std::strong_ordering Value;
+    bool ExpectEq;
+    bool ExpectNeq;
+    bool ExpectLess;
+    bool ExpectGreater;
+  } TestCases[] = {
+      {Eq, true, false, false, false},
+      {Equiv, true, false, false, false},
+      {Less, false, true, true, false},
+      {Greater, false, true, false, true},
+  };
+  for (auto TC : TestCases) {
+    auto V = TC.Value;
+    assert((V == 0) == TC.ExpectEq);
+    assert((0 == V) == TC.ExpectEq);
+    assert((V != 0) == TC.ExpectNeq);
+    assert((0 != V) == TC.ExpectNeq);
+
+    assert((V < 0) == TC.ExpectLess);
+    assert((V > 0) == TC.ExpectGreater);
+    assert((V <= 0) == (TC.ExpectLess || TC.ExpectEq));
+    assert((V >= 0) == (TC.ExpectGreater || TC.ExpectEq));
+
+    assert((0 < V) == TC.ExpectGreater);
+    assert((0 > V) == TC.ExpectLess);
+    assert((0 <= V) == (TC.ExpectGreater || TC.ExpectEq));
+    assert((0 >= V) == (TC.ExpectLess || TC.ExpectEq));
+  }
+  {
+    std::strong_ordering res = (Eq <=> 0);
+    ((void)res);
+    res = (0 <=> Eq);
+    ((void)res);
+  }
+  enum ExpectRes {
+    ER_Greater,
+    ER_Less,
+    ER_Equiv
+  };
+  struct {
+    std::strong_ordering Value;
+    ExpectRes Expect;
+  } SpaceshipTestCases[] = {
+      {std::strong_ordering::equivalent, ER_Equiv},
+      {std::strong_ordering::less, ER_Less},
+      {std::strong_ordering::greater, ER_Greater},
+  };
+  for (auto TC : SpaceshipTestCases)
+  {
+    std::strong_ordering Res = (TC.Value <=> 0);
+    switch (TC.Expect) {
+    case ER_Equiv:
+      assert(Res == 0);
+      assert(0 == Res);
+      break;
+    case ER_Less:
+      assert(Res < 0);
+      break;
+    case ER_Greater:
+      assert(Res > 0);
+      break;
+    }
+  }
+  {
+    static_assert(std::strong_ordering::less == std::strong_ordering::less);
+    static_assert(std::strong_ordering::less != std::strong_ordering::equal);
+    static_assert(std::strong_ordering::less != std::strong_ordering::greater);
+
+    static_assert(std::strong_ordering::equal != std::strong_ordering::less);
+    static_assert(std::strong_ordering::equal == std::strong_ordering::equal);
+    static_assert(std::strong_ordering::equal != std::strong_ordering::greater);
+
+    static_assert(std::strong_ordering::greater != std::strong_ordering::less);
+    static_assert(std::strong_ordering::greater != std::strong_ordering::equal);
+    static_assert(std::strong_ordering::greater ==
+                  std::strong_ordering::greater);
+  }
+
+  test_equality();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_static_members();
+  test_signatures();
+  test_equality();
+  static_assert(test_conversion(), "conversion test failed");
+  static_assert(test_constexpr(), "constexpr test failed");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.weakord/weakord.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.weakord/weakord.pass.cpp
new file mode 100644
index 0000000..d538898
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/cmp.weakord/weakord.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// class weak_ordering
+
+
+#include <compare>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+const volatile void* volatile sink;
+
+void test_static_members() {
+  DoNotOptimize(&std::weak_ordering::less);
+  DoNotOptimize(&std::weak_ordering::equivalent);
+  DoNotOptimize(&std::weak_ordering::greater);
+}
+
+void test_signatures() {
+  auto& Eq = std::weak_ordering::equivalent;
+
+  ASSERT_NOEXCEPT(Eq == 0);
+  ASSERT_NOEXCEPT(0 == Eq);
+  ASSERT_NOEXCEPT(Eq != 0);
+  ASSERT_NOEXCEPT(0 != Eq);
+  ASSERT_NOEXCEPT(0 < Eq);
+  ASSERT_NOEXCEPT(Eq < 0);
+  ASSERT_NOEXCEPT(0 <= Eq);
+  ASSERT_NOEXCEPT(Eq <= 0);
+  ASSERT_NOEXCEPT(0 > Eq);
+  ASSERT_NOEXCEPT(Eq > 0);
+  ASSERT_NOEXCEPT(0 >= Eq);
+  ASSERT_NOEXCEPT(Eq >= 0);
+  ASSERT_NOEXCEPT(0 <=> Eq);
+  ASSERT_NOEXCEPT(Eq <=> 0);
+  ASSERT_SAME_TYPE(decltype(Eq <=> 0), std::weak_ordering);
+  ASSERT_SAME_TYPE(decltype(0 <=> Eq), std::weak_ordering);
+}
+
+constexpr bool test_conversion() {
+  static_assert(std::is_convertible<const std::weak_ordering&,
+      std::partial_ordering>::value, "");
+  { // value == 0
+    auto V = std::weak_ordering::equivalent;
+    std::partial_ordering WV = V;
+    assert(WV == 0);
+  }
+  { // value < 0
+    auto V = std::weak_ordering::less;
+    std::partial_ordering WV = V;
+    assert(WV < 0);
+  }
+  { // value > 0
+    auto V = std::weak_ordering::greater;
+    std::partial_ordering WV = V;
+    assert(WV > 0);
+  }
+  return true;
+}
+
+constexpr void test_equality() {
+  auto& WeakEq = std::weak_ordering::equivalent;
+  auto& PartialEq = std::partial_ordering::equivalent;
+  assert(WeakEq == PartialEq);
+
+  auto& StrongEq = std::strong_ordering::equal;
+  assert(WeakEq == StrongEq);
+}
+
+constexpr bool test_constexpr() {
+  auto& Eq = std::weak_ordering::equivalent;
+  auto& Less = std::weak_ordering::less;
+  auto& Greater = std::weak_ordering::greater;
+  struct {
+    std::weak_ordering Value;
+    bool ExpectEq;
+    bool ExpectNeq;
+    bool ExpectLess;
+    bool ExpectGreater;
+  } TestCases[] = {
+      {Eq, true, false, false, false},
+      {Less, false, true, true, false},
+      {Greater, false, true, false, true},
+  };
+  for (auto TC : TestCases) {
+    auto V = TC.Value;
+    assert((V == 0) == TC.ExpectEq);
+    assert((0 == V) == TC.ExpectEq);
+    assert((V != 0) == TC.ExpectNeq);
+    assert((0 != V) == TC.ExpectNeq);
+
+    assert((V < 0) == TC.ExpectLess);
+    assert((V > 0) == TC.ExpectGreater);
+    assert((V <= 0) == (TC.ExpectLess || TC.ExpectEq));
+    assert((V >= 0) == (TC.ExpectGreater || TC.ExpectEq));
+
+    assert((0 < V) == TC.ExpectGreater);
+    assert((0 > V) == TC.ExpectLess);
+    assert((0 <= V) == (TC.ExpectGreater || TC.ExpectEq));
+    assert((0 >= V) == (TC.ExpectLess || TC.ExpectEq));
+  }
+  {
+    std::weak_ordering res = (Eq <=> 0);
+    ((void)res);
+    res = (0 <=> Eq);
+    ((void)res);
+  }
+  enum ExpectRes {
+    ER_Greater,
+    ER_Less,
+    ER_Equiv
+  };
+  struct {
+    std::weak_ordering Value;
+    ExpectRes Expect;
+  } SpaceshipTestCases[] = {
+      {std::weak_ordering::equivalent, ER_Equiv},
+      {std::weak_ordering::less, ER_Less},
+      {std::weak_ordering::greater, ER_Greater},
+  };
+  for (auto TC : SpaceshipTestCases)
+  {
+    std::weak_ordering Res = (TC.Value <=> 0);
+    switch (TC.Expect) {
+    case ER_Equiv:
+      assert(Res == 0);
+      assert(0 == Res);
+      break;
+    case ER_Less:
+      assert(Res < 0);
+      break;
+    case ER_Greater:
+      assert(Res > 0);
+      break;
+    }
+  }
+
+  {
+    static_assert(std::weak_ordering::less == std::weak_ordering::less);
+    static_assert(std::weak_ordering::less != std::weak_ordering::equivalent);
+    static_assert(std::weak_ordering::less != std::weak_ordering::greater);
+
+    static_assert(std::weak_ordering::equivalent != std::weak_ordering::less);
+    static_assert(std::weak_ordering::equivalent ==
+                  std::weak_ordering::equivalent);
+    static_assert(std::weak_ordering::equivalent !=
+                  std::weak_ordering::greater);
+
+    static_assert(std::weak_ordering::greater != std::weak_ordering::less);
+    static_assert(std::weak_ordering::greater !=
+                  std::weak_ordering::equivalent);
+    static_assert(std::weak_ordering::greater == std::weak_ordering::greater);
+  }
+
+  test_equality();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_static_members();
+  test_signatures();
+  test_equality();
+  static_assert(test_conversion(), "conversion test failed");
+  static_assert(test_constexpr(), "constexpr test failed");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cmp/compare.syn/named_functions.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cmp/compare.syn/named_functions.pass.cpp
new file mode 100644
index 0000000..1d31e55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cmp/compare.syn/named_functions.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+
+// constexpr bool is_eq  (partial_ordering cmp) noexcept { return cmp == 0; }
+// constexpr bool is_neq (partial_ordering cmp) noexcept { return cmp != 0; }
+// constexpr bool is_lt  (partial_ordering cmp) noexcept { return cmp < 0; }
+// constexpr bool is_lteq(partial_ordering cmp) noexcept { return cmp <= 0; }
+// constexpr bool is_gt  (partial_ordering cmp) noexcept { return cmp > 0; }
+// constexpr bool is_gteq(partial_ordering cmp) noexcept { return cmp >= 0; }
+
+#include <compare>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    assert(!std::is_eq(std::strong_ordering::less));
+    assert( std::is_eq(std::strong_ordering::equal));
+    assert(!std::is_eq(std::strong_ordering::greater));
+    assert(!std::is_eq(std::weak_ordering::less));
+    assert( std::is_eq(std::weak_ordering::equivalent));
+    assert(!std::is_eq(std::weak_ordering::greater));
+    assert(!std::is_eq(std::partial_ordering::less));
+    assert( std::is_eq(std::partial_ordering::equivalent));
+    assert(!std::is_eq(std::partial_ordering::greater));
+    assert(!std::is_eq(std::partial_ordering::unordered));
+
+    assert( std::is_neq(std::strong_ordering::less));
+    assert(!std::is_neq(std::strong_ordering::equal));
+    assert( std::is_neq(std::strong_ordering::greater));
+    assert( std::is_neq(std::weak_ordering::less));
+    assert(!std::is_neq(std::weak_ordering::equivalent));
+    assert( std::is_neq(std::weak_ordering::greater));
+    assert( std::is_neq(std::partial_ordering::less));
+    assert(!std::is_neq(std::partial_ordering::equivalent));
+    assert( std::is_neq(std::partial_ordering::greater));
+    assert( std::is_neq(std::partial_ordering::unordered));
+
+    assert( std::is_lt(std::strong_ordering::less));
+    assert(!std::is_lt(std::strong_ordering::equal));
+    assert(!std::is_lt(std::strong_ordering::greater));
+    assert( std::is_lt(std::weak_ordering::less));
+    assert(!std::is_lt(std::weak_ordering::equivalent));
+    assert(!std::is_lt(std::weak_ordering::greater));
+    assert( std::is_lt(std::partial_ordering::less));
+    assert(!std::is_lt(std::partial_ordering::equivalent));
+    assert(!std::is_lt(std::partial_ordering::greater));
+    assert(!std::is_lt(std::partial_ordering::unordered));
+
+    assert( std::is_lteq(std::strong_ordering::less));
+    assert( std::is_lteq(std::strong_ordering::equal));
+    assert(!std::is_lteq(std::strong_ordering::greater));
+    assert( std::is_lteq(std::weak_ordering::less));
+    assert( std::is_lteq(std::weak_ordering::equivalent));
+    assert(!std::is_lteq(std::weak_ordering::greater));
+    assert( std::is_lteq(std::partial_ordering::less));
+    assert( std::is_lteq(std::partial_ordering::equivalent));
+    assert(!std::is_lteq(std::partial_ordering::greater));
+    assert(!std::is_lteq(std::partial_ordering::unordered));
+
+    assert(!std::is_gt(std::strong_ordering::less));
+    assert(!std::is_gt(std::strong_ordering::equal));
+    assert( std::is_gt(std::strong_ordering::greater));
+    assert(!std::is_gt(std::weak_ordering::less));
+    assert(!std::is_gt(std::weak_ordering::equivalent));
+    assert( std::is_gt(std::weak_ordering::greater));
+    assert(!std::is_gt(std::partial_ordering::less));
+    assert(!std::is_gt(std::partial_ordering::equivalent));
+    assert( std::is_gt(std::partial_ordering::greater));
+    assert(!std::is_gt(std::partial_ordering::unordered));
+
+    assert(!std::is_gteq(std::strong_ordering::less));
+    assert( std::is_gteq(std::strong_ordering::equal));
+    assert( std::is_gteq(std::strong_ordering::greater));
+    assert(!std::is_gteq(std::weak_ordering::less));
+    assert( std::is_gteq(std::weak_ordering::equivalent));
+    assert( std::is_gteq(std::weak_ordering::greater));
+    assert(!std::is_gteq(std::partial_ordering::less));
+    assert( std::is_gteq(std::partial_ordering::equivalent));
+    assert( std::is_gteq(std::partial_ordering::greater));
+    assert(!std::is_gteq(std::partial_ordering::unordered));
+
+    // Test noexceptness.
+    ASSERT_NOEXCEPT(std::is_eq(std::partial_ordering::less));
+    ASSERT_NOEXCEPT(std::is_neq(std::partial_ordering::less));
+    ASSERT_NOEXCEPT(std::is_lt(std::partial_ordering::less));
+    ASSERT_NOEXCEPT(std::is_lteq(std::partial_ordering::less));
+    ASSERT_NOEXCEPT(std::is_gt(std::partial_ordering::less));
+    ASSERT_NOEXCEPT(std::is_gteq(std::partial_ordering::less));
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/cstdint/cstdint.syn/cstdint.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/cstdint/cstdint.syn/cstdint.pass.cpp
new file mode 100644
index 0000000..682c382
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/cstdint/cstdint.syn/cstdint.pass.cpp
@@ -0,0 +1,300 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cstdint>
+
+#include <cstdint>
+#include <cstddef>
+#include <csignal>
+#include <climits>
+#include <type_traits>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   include <cwchar>
+#   include <cwctype>
+#endif
+
+int main(int, char**)
+{
+    // typedef std::int8_t
+    static_assert(sizeof(std::int8_t)*CHAR_BIT == 8,
+                 "sizeof(std::int8_t)*CHAR_BIT == 8");
+    static_assert(std::is_signed<std::int8_t>::value,
+                 "std::is_signed<std::int8_t>::value");
+    // typedef std::int16_t
+    static_assert(sizeof(std::int16_t)*CHAR_BIT == 16,
+                 "sizeof(std::int16_t)*CHAR_BIT == 16");
+    static_assert(std::is_signed<std::int16_t>::value,
+                 "std::is_signed<std::int16_t>::value");
+    // typedef std::int32_t
+    static_assert(sizeof(std::int32_t)*CHAR_BIT == 32,
+                 "sizeof(std::int32_t)*CHAR_BIT == 32");
+    static_assert(std::is_signed<std::int32_t>::value,
+                 "std::is_signed<std::int32_t>::value");
+    // typedef std::int64_t
+    static_assert(sizeof(std::int64_t)*CHAR_BIT == 64,
+                 "sizeof(std::int64_t)*CHAR_BIT == 64");
+    static_assert(std::is_signed<std::int64_t>::value,
+                 "std::is_signed<std::int64_t>::value");
+
+    // typedef std::uint8_t
+    static_assert(sizeof(std::uint8_t)*CHAR_BIT == 8,
+                 "sizeof(std::uint8_t)*CHAR_BIT == 8");
+    static_assert(std::is_unsigned<std::uint8_t>::value,
+                 "std::is_unsigned<std::uint8_t>::value");
+    // typedef std::uint16_t
+    static_assert(sizeof(std::uint16_t)*CHAR_BIT == 16,
+                 "sizeof(std::uint16_t)*CHAR_BIT == 16");
+    static_assert(std::is_unsigned<std::uint16_t>::value,
+                 "std::is_unsigned<std::uint16_t>::value");
+    // typedef std::uint32_t
+    static_assert(sizeof(std::uint32_t)*CHAR_BIT == 32,
+                 "sizeof(std::uint32_t)*CHAR_BIT == 32");
+    static_assert(std::is_unsigned<std::uint32_t>::value,
+                 "std::is_unsigned<std::uint32_t>::value");
+    // typedef std::uint64_t
+    static_assert(sizeof(std::uint64_t)*CHAR_BIT == 64,
+                 "sizeof(std::uint64_t)*CHAR_BIT == 64");
+    static_assert(std::is_unsigned<std::uint64_t>::value,
+                 "std::is_unsigned<std::uint64_t>::value");
+
+    // typedef std::int_least8_t
+    static_assert(sizeof(std::int_least8_t)*CHAR_BIT >= 8,
+                 "sizeof(std::int_least8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_signed<std::int_least8_t>::value,
+                 "std::is_signed<std::int_least8_t>::value");
+    // typedef std::int_least16_t
+    static_assert(sizeof(std::int_least16_t)*CHAR_BIT >= 16,
+                 "sizeof(std::int_least16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_signed<std::int_least16_t>::value,
+                 "std::is_signed<std::int_least16_t>::value");
+    // typedef std::int_least32_t
+    static_assert(sizeof(std::int_least32_t)*CHAR_BIT >= 32,
+                 "sizeof(std::int_least32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_signed<std::int_least32_t>::value,
+                 "std::is_signed<std::int_least32_t>::value");
+    // typedef std::int_least64_t
+    static_assert(sizeof(std::int_least64_t)*CHAR_BIT >= 64,
+                 "sizeof(std::int_least64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_signed<std::int_least64_t>::value,
+                 "std::is_signed<std::int_least64_t>::value");
+
+    // typedef std::uint_least8_t
+    static_assert(sizeof(std::uint_least8_t)*CHAR_BIT >= 8,
+                 "sizeof(std::uint_least8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_unsigned<std::uint_least8_t>::value,
+                 "std::is_unsigned<std::uint_least8_t>::value");
+    // typedef std::uint_least16_t
+    static_assert(sizeof(std::uint_least16_t)*CHAR_BIT >= 16,
+                 "sizeof(std::uint_least16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_unsigned<std::uint_least16_t>::value,
+                 "std::is_unsigned<std::uint_least16_t>::value");
+    // typedef std::uint_least32_t
+    static_assert(sizeof(std::uint_least32_t)*CHAR_BIT >= 32,
+                 "sizeof(std::uint_least32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_unsigned<std::uint_least32_t>::value,
+                 "std::is_unsigned<std::uint_least32_t>::value");
+    // typedef std::uint_least64_t
+    static_assert(sizeof(std::uint_least64_t)*CHAR_BIT >= 64,
+                 "sizeof(std::uint_least64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_unsigned<std::uint_least64_t>::value,
+                 "std::is_unsigned<std::uint_least64_t>::value");
+
+    // typedef std::int_fast8_t
+    static_assert(sizeof(std::int_fast8_t)*CHAR_BIT >= 8,
+                 "sizeof(std::int_fast8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_signed<std::int_fast8_t>::value,
+                 "std::is_signed<std::int_fast8_t>::value");
+    // typedef std::int_fast16_t
+    static_assert(sizeof(std::int_fast16_t)*CHAR_BIT >= 16,
+                 "sizeof(std::int_fast16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_signed<std::int_fast16_t>::value,
+                 "std::is_signed<std::int_fast16_t>::value");
+    // typedef std::int_fast32_t
+    static_assert(sizeof(std::int_fast32_t)*CHAR_BIT >= 32,
+                 "sizeof(std::int_fast32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_signed<std::int_fast32_t>::value,
+                 "std::is_signed<std::int_fast32_t>::value");
+    // typedef std::int_fast64_t
+    static_assert(sizeof(std::int_fast64_t)*CHAR_BIT >= 64,
+                 "sizeof(std::int_fast64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_signed<std::int_fast64_t>::value,
+                 "std::is_signed<std::int_fast64_t>::value");
+
+    // typedef std::uint_fast8_t
+    static_assert(sizeof(std::uint_fast8_t)*CHAR_BIT >= 8,
+                 "sizeof(std::uint_fast8_t)*CHAR_BIT >= 8");
+    static_assert(std::is_unsigned<std::uint_fast8_t>::value,
+                 "std::is_unsigned<std::uint_fast8_t>::value");
+    // typedef std::uint_fast16_t
+    static_assert(sizeof(std::uint_fast16_t)*CHAR_BIT >= 16,
+                 "sizeof(std::uint_fast16_t)*CHAR_BIT >= 16");
+    static_assert(std::is_unsigned<std::uint_fast16_t>::value,
+                 "std::is_unsigned<std::uint_fast16_t>::value");
+    // typedef std::uint_fast32_t
+    static_assert(sizeof(std::uint_fast32_t)*CHAR_BIT >= 32,
+                 "sizeof(std::uint_fast32_t)*CHAR_BIT >= 32");
+    static_assert(std::is_unsigned<std::uint_fast32_t>::value,
+                 "std::is_unsigned<std::uint_fast32_t>::value");
+    // typedef std::uint_fast64_t
+    static_assert(sizeof(std::uint_fast64_t)*CHAR_BIT >= 64,
+                 "sizeof(std::uint_fast64_t)*CHAR_BIT >= 64");
+    static_assert(std::is_unsigned<std::uint_fast64_t>::value,
+                 "std::is_unsigned<std::uint_fast64_t>::value");
+
+    // typedef std::intptr_t
+    static_assert(sizeof(std::intptr_t) >= sizeof(void*),
+                 "sizeof(std::intptr_t) >= sizeof(void*)");
+    static_assert(std::is_signed<std::intptr_t>::value,
+                 "std::is_signed<std::intptr_t>::value");
+    // typedef std::uintptr_t
+    static_assert(sizeof(std::uintptr_t) >= sizeof(void*),
+                 "sizeof(std::uintptr_t) >= sizeof(void*)");
+    static_assert(std::is_unsigned<std::uintptr_t>::value,
+                 "std::is_unsigned<std::uintptr_t>::value");
+
+    // typedef std::intmax_t
+    static_assert(sizeof(std::intmax_t) >= sizeof(long long),
+                 "sizeof(std::intmax_t) >= sizeof(long long)");
+    static_assert(std::is_signed<std::intmax_t>::value,
+                 "std::is_signed<std::intmax_t>::value");
+    // typedef std::uintmax_t
+    static_assert(sizeof(std::uintmax_t) >= sizeof(unsigned long long),
+                 "sizeof(std::uintmax_t) >= sizeof(unsigned long long)");
+    static_assert(std::is_unsigned<std::uintmax_t>::value,
+                 "std::is_unsigned<std::uintmax_t>::value");
+
+    // INTN_MIN
+    static_assert(INT8_MIN == -128, "INT8_MIN == -128");
+    static_assert(INT16_MIN == -32768, "INT16_MIN == -32768");
+    static_assert(INT32_MIN == -2147483647 - 1, "INT32_MIN == -2147483648");
+    static_assert(INT64_MIN == -9223372036854775807LL - 1, "INT64_MIN == -9223372036854775808LL");
+
+    // INTN_MAX
+    static_assert(INT8_MAX == 127, "INT8_MAX == 127");
+    static_assert(INT16_MAX == 32767, "INT16_MAX == 32767");
+    static_assert(INT32_MAX == 2147483647, "INT32_MAX == 2147483647");
+    static_assert(INT64_MAX == 9223372036854775807LL, "INT64_MAX == 9223372036854775807LL");
+
+    // UINTN_MAX
+    static_assert(UINT8_MAX == 255, "UINT8_MAX == 255");
+    static_assert(UINT16_MAX == 65535, "UINT16_MAX == 65535");
+    static_assert(UINT32_MAX == 4294967295U, "UINT32_MAX == 4294967295");
+    static_assert(UINT64_MAX == 18446744073709551615ULL, "UINT64_MAX == 18446744073709551615ULL");
+
+    // INT_FASTN_MIN
+    static_assert(INT_FAST8_MIN <= -128, "INT_FAST8_MIN <= -128");
+    static_assert(INT_FAST16_MIN <= -32768, "INT_FAST16_MIN <= -32768");
+    static_assert(INT_FAST32_MIN <= -2147483647 - 1, "INT_FAST32_MIN <= -2147483648");
+    static_assert(INT_FAST64_MIN <= -9223372036854775807LL - 1, "INT_FAST64_MIN <= -9223372036854775808LL");
+
+    // INT_FASTN_MAX
+    static_assert(INT_FAST8_MAX >= 127, "INT_FAST8_MAX >= 127");
+    static_assert(INT_FAST16_MAX >= 32767, "INT_FAST16_MAX >= 32767");
+    static_assert(INT_FAST32_MAX >= 2147483647, "INT_FAST32_MAX >= 2147483647");
+    static_assert(INT_FAST64_MAX >= 9223372036854775807LL, "INT_FAST64_MAX >= 9223372036854775807LL");
+
+    // UINT_FASTN_MAX
+    static_assert(UINT_FAST8_MAX >= 255, "UINT_FAST8_MAX >= 255");
+    static_assert(UINT_FAST16_MAX >= 65535, "UINT_FAST16_MAX >= 65535");
+    static_assert(UINT_FAST32_MAX >= 4294967295U, "UINT_FAST32_MAX >= 4294967295");
+    static_assert(UINT_FAST64_MAX >= 18446744073709551615ULL, "UINT_FAST64_MAX >= 18446744073709551615ULL");
+
+    // INTPTR_MIN
+    assert(INTPTR_MIN == std::numeric_limits<std::intptr_t>::min());
+
+    // INTPTR_MAX
+    assert(INTPTR_MAX == std::numeric_limits<std::intptr_t>::max());
+
+    // UINTPTR_MAX
+    assert(UINTPTR_MAX == std::numeric_limits<std::uintptr_t>::max());
+
+    // INTMAX_MIN
+    assert(INTMAX_MIN == std::numeric_limits<std::intmax_t>::min());
+
+    // INTMAX_MAX
+    assert(INTMAX_MAX == std::numeric_limits<std::intmax_t>::max());
+
+    // UINTMAX_MAX
+    assert(UINTMAX_MAX == std::numeric_limits<std::uintmax_t>::max());
+
+    // PTRDIFF_MIN
+    assert(PTRDIFF_MIN == std::numeric_limits<std::ptrdiff_t>::min());
+
+    // PTRDIFF_MAX
+    assert(PTRDIFF_MAX == std::numeric_limits<std::ptrdiff_t>::max());
+
+    // SIG_ATOMIC_MIN
+    assert(SIG_ATOMIC_MIN == std::numeric_limits<std::sig_atomic_t>::min());
+
+    // SIG_ATOMIC_MAX
+    assert(SIG_ATOMIC_MAX == std::numeric_limits<std::sig_atomic_t>::max());
+
+    // SIZE_MAX
+    assert(SIZE_MAX == std::numeric_limits<std::size_t>::max());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    // WCHAR_MIN
+    assert(WCHAR_MIN == std::numeric_limits<wchar_t>::min());
+
+    // WCHAR_MAX
+    assert(WCHAR_MAX == std::numeric_limits<wchar_t>::max());
+
+    // WINT_MIN
+    assert(WINT_MIN == std::numeric_limits<std::wint_t>::min());
+
+    // WINT_MAX
+    assert(WINT_MAX == std::numeric_limits<std::wint_t>::max());
+#endif
+
+#ifndef INT8_C
+#error INT8_C not defined
+#endif
+
+#ifndef INT16_C
+#error INT16_C not defined
+#endif
+
+#ifndef INT32_C
+#error INT32_C not defined
+#endif
+
+#ifndef INT64_C
+#error INT64_C not defined
+#endif
+
+#ifndef UINT8_C
+#error UINT8_C not defined
+#endif
+
+#ifndef UINT16_C
+#error UINT16_C not defined
+#endif
+
+#ifndef UINT32_C
+#error UINT32_C not defined
+#endif
+
+#ifndef UINT64_C
+#error UINT64_C not defined
+#endif
+
+#ifndef INTMAX_C
+#error INTMAX_C not defined
+#endif
+
+#ifndef UINTMAX_C
+#error UINTMAX_C not defined
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp
new file mode 100644
index 0000000..f81b1dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.capacity/operator_bool.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr explicit operator bool() const noexcept
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+constexpr bool do_test() {
+  static_assert(std::is_nothrow_constructible<bool, C>::value, "");
+  static_assert(!std::is_convertible<C, bool>::value, "");
+  {
+    constexpr C c;
+    static_assert(bool(c) == false, "");
+  }
+  { // null case
+    const C c = {};
+    ASSERT_NOEXCEPT(bool(c));
+    assert(c.address() == nullptr);
+    assert(bool(c) == false);
+  }
+  { // non-null case
+    char dummy = 42;
+    C c = C::from_address((void*)&dummy);
+    assert(c.address() == &dummy);
+    assert(bool(c) == true);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  do_test<std::coroutine_handle<>>();
+  do_test<std::coroutine_handle<int>>();
+  static_assert(do_test<std::coroutine_handle<>>());
+  static_assert(do_test<std::coroutine_handle<int>>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/equal_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/equal_comp.pass.cpp
new file mode 100644
index 0000000..104af4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/equal_comp.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr bool operator==(coroutine_handle<> x, coroutine_handle<> y) noexcept;
+
+#include <coroutine>
+#include <type_traits>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+void do_test(int *LHSVal, int *RHSVal) {
+  const C LHS = C::from_address(LHSVal);
+  const C RHS = C::from_address(RHSVal);
+  const bool ExpectIsEqual = (LHSVal == RHSVal);
+  assert((LHS == RHS) == ExpectIsEqual);
+  assert((RHS == LHS) == ExpectIsEqual);
+  assert((LHS != RHS) == !ExpectIsEqual);
+  assert((RHS != LHS) == !ExpectIsEqual);
+  {
+    static_assert(noexcept(LHS == RHS), "");
+    static_assert(noexcept(LHS != RHS), "");
+    ASSERT_SAME_TYPE(decltype(LHS == RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS != RHS), bool);
+  }
+}
+
+int main(int, char**)
+{
+  int i;
+  std::pair<int *, int *> const TestCases[] = {
+      {nullptr, nullptr},
+      {&i, &i},
+      {nullptr, &i},
+      {&i, nullptr}
+  };
+  for (auto& TC : TestCases) {
+    do_test<std::coroutine_handle<>>(TC.first, TC.second);
+    do_test<std::coroutine_handle<int>>(TC.first, TC.second);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/less_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/less_comp.pass.cpp
new file mode 100644
index 0000000..c011ab0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.compare/less_comp.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr strong_ordering operator<=>(coroutine_handle<> x, coroutine_handle<> y) noexcept;
+
+#include <coroutine>
+#include <type_traits>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+void do_test(int *LHSVal, int *RHSVal) {
+  const C LHS = C::from_address(LHSVal);
+  const C RHS = C::from_address(RHSVal);
+  assert((LHS < RHS) == (LHSVal < RHSVal));
+  assert((RHS < LHS) == (RHSVal < LHSVal));
+  assert((LHS > RHS) == (LHSVal > RHSVal));
+  assert((RHS > LHS) == (RHSVal > LHSVal));
+  assert((LHS <= RHS) == (LHSVal <= RHSVal));
+  assert((RHS <= LHS) == (RHSVal <= LHSVal));
+  assert((LHS >= RHS) == (LHSVal >= RHSVal));
+  assert((RHS >= LHS) == (RHSVal >= LHSVal));
+  {
+    static_assert(noexcept(LHS < RHS), "");
+    static_assert(noexcept(LHS > RHS), "");
+    static_assert(noexcept(LHS <= RHS), "");
+    static_assert(noexcept(LHS >= RHS), "");
+    ASSERT_SAME_TYPE(decltype(LHS < RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS > RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS <= RHS), bool);
+    ASSERT_SAME_TYPE(decltype(LHS >= RHS), bool);
+  }
+}
+
+int main(int, char**)
+{
+  int i;
+  std::pair<int *, int *> const TestCases[] = {
+      {nullptr, nullptr},
+      {&i, &i},
+      {nullptr, &i},
+      {&i, nullptr}
+  };
+  for (auto& TC : TestCases) {
+    do_test<std::coroutine_handle<>>(TC.first, TC.second);
+    do_test<std::coroutine_handle<int>>(TC.first, TC.second);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.completion/done.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.completion/done.pass.cpp
new file mode 100644
index 0000000..cd98e78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.completion/done.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// bool done() const
+
+#include <coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class Promise>
+void do_test(std::coroutine_handle<Promise> const& H) {
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.done()), bool);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.done());
+  }
+}
+
+int main(int, char**)
+{
+  do_test(std::coroutine_handle<>{});
+  do_test(std::coroutine_handle<int>{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/assign.pass.cpp
new file mode 100644
index 0000000..673cf42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/assign.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// coroutine_handle& operator=(nullptr_t) noexcept
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+void do_test() {
+  int dummy = 42;
+  void* dummy_h = &dummy;
+  {
+    static_assert(std::is_nothrow_assignable<C&, std::nullptr_t>::value, "");
+    static_assert(!std::is_assignable<C&, void*>::value, "");
+  }
+  {
+    C c = C::from_address(dummy_h);
+    assert(c.address() == &dummy);
+    c = nullptr;
+    assert(c.address() == nullptr);
+    c = nullptr;
+    assert(c.address() == nullptr);
+  }
+  {
+    C c;
+    C& cr = (c = nullptr);
+    assert(&c == &cr);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<std::coroutine_handle<>>();
+  do_test<std::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/construct.pass.cpp
new file mode 100644
index 0000000..233f922
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.con/construct.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr coroutine_handle() noexcept
+// constexpr coroutine_handle(nullptr_t) noexcept
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+constexpr bool do_test() {
+  static_assert(std::is_nothrow_constructible<C>::value, "");
+  static_assert(std::is_nothrow_constructible<C, std::nullptr_t>::value, "");
+  {
+    C c;
+    assert(c.address() == nullptr);
+  }
+  {
+    C c = C(nullptr);
+    assert(c.address() == nullptr);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  do_test<std::coroutine_handle<>>();
+  do_test<std::coroutine_handle<int>>();
+  static_assert(do_test<std::coroutine_handle<>>());
+  static_assert(do_test<std::coroutine_handle<int>>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/address.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/address.pass.cpp
new file mode 100644
index 0000000..d41b6e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/address.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// constexpr void* address() const noexcept
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+constexpr bool do_test() {
+  {
+    constexpr C c; ((void)c);
+    static_assert(c.address() == nullptr, "");
+  }
+  {
+    const C c = {}; ((void)c);
+    ASSERT_NOEXCEPT(c.address());
+    ASSERT_SAME_TYPE(decltype(c.address()), void*);
+    assert(c.address() == nullptr);
+  }
+  {
+    char dummy = 42;
+    C c = C::from_address((void*)&dummy);
+    assert(c.address() == &dummy);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  do_test<std::coroutine_handle<>>();
+  do_test<std::coroutine_handle<int>>();
+  static_assert(do_test<std::coroutine_handle<>>());
+  static_assert(do_test<std::coroutine_handle<int>>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.pass.cpp
new file mode 100644
index 0000000..91ab4cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.export/from_address.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// static coroutine_handle from_address(void*) noexcept
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+void do_test() {
+  {
+    C c = C::from_address(nullptr);
+    static_assert(noexcept(C::from_address(nullptr)), "");
+    static_assert(std::is_same<decltype(C::from_address(nullptr)), C>::value, "");
+    assert(c.address() == nullptr);
+  }
+  {
+    char dummy = 42;
+    C c = C::from_address((void*)&dummy);
+    assert(c.address() == &dummy);
+  }
+  {
+    TEST_IGNORE_NODISCARD C::from_address((int*)nullptr);
+    TEST_IGNORE_NODISCARD C::from_address((void*)nullptr);
+    TEST_IGNORE_NODISCARD C::from_address((char*)nullptr);
+  }
+  {
+    char dummy = 42;
+    C c = C::from_address(&dummy);
+    int* p = (int*)c.address();
+    std::coroutine_handle<> c2 = std::coroutine_handle<>::from_address(p);
+    assert(c2 == c);
+  }
+}
+
+int main(int, char**)
+{
+  do_test<std::coroutine_handle<>>();
+  do_test<std::coroutine_handle<int>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.hash/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.hash/hash.pass.cpp
new file mode 100644
index 0000000..6d5b9e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.hash/hash.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// namespace std {
+//  template <class P> struct hash<coroutine_handle<P>>;
+// }
+
+#include <coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+template <class C>
+void do_test(int *LHSVal, int *RHSVal) {
+  [[maybe_unused]] const size_t ExpectLHS = std::hash<void*>{}(LHSVal);
+  [[maybe_unused]] const size_t ExpectRHS = std::hash<void*>{}(RHSVal);
+  const C LHS = C::from_address(LHSVal);
+  const C RHS = C::from_address(RHSVal);
+  const std::hash<C> h;
+
+  LIBCPP_ASSERT(h(LHS) == ExpectLHS);
+  LIBCPP_ASSERT(h(RHS) == ExpectRHS);
+  assert((h(LHS) == h(RHS)) == (LHSVal == RHSVal));
+  {
+    ASSERT_SAME_TYPE(decltype(h(LHS)), size_t);
+    ASSERT_NOEXCEPT(std::hash<C>{}(LHS));
+  }
+}
+
+int main(int, char**)
+{
+  int i, j;
+  std::pair<int *, int *> const TestCases[] = {
+      {nullptr, nullptr},
+      {nullptr, &i},
+      {&i, &i},
+      {&i, &j}
+  };
+  for (auto& TC : TestCases) {
+    do_test<std::coroutine_handle<>>(TC.first, TC.second);
+    do_test<std::coroutine_handle<int>>(TC.first, TC.second);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.noop/noop_coroutine.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.noop/noop_coroutine.pass.cpp
new file mode 100644
index 0000000..92029be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.noop/noop_coroutine.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: ubsan
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+// struct noop_coroutine_promise;
+// using noop_coroutine_handle = coroutine_handle<noop_coroutine_promise>;
+// noop_coroutine_handle noop_coroutine() noexcept;
+
+#include <coroutine>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_same<std::coroutine_handle<std::noop_coroutine_promise>, std::noop_coroutine_handle>::value, "");
+static_assert(std::is_same<decltype(std::noop_coroutine()), std::noop_coroutine_handle>::value, "");
+
+// template <> struct coroutine_handle<noop_coroutine_promise> : coroutine_handle<>
+// {
+// // [coroutine.handle.noop.observers], observers
+// constexpr explicit operator bool() const noexcept;
+// constexpr bool done() const noexcept;
+
+// // [coroutine.handle.noop.resumption], resumption
+// constexpr void operator()() const noexcept;
+// constexpr void resume() const noexcept;
+// constexpr void destroy() const noexcept;
+
+// // [coroutine.handle.noop.promise], promise access
+// noop_coroutine_promise& promise() const noexcept;
+
+// // [coroutine.handle.noop.address], address
+// constexpr void* address() const noexcept;
+
+int main(int, char**)
+{
+  auto h = std::noop_coroutine();
+  std::coroutine_handle<> base = h;
+
+  assert(h);
+  assert(base);
+
+  assert(!h.done());
+  assert(!base.done());
+
+  h.resume();
+  h.destroy();
+  h();
+  static_assert(h, "");
+  static_assert(h.done() == false, "");
+
+  // [coroutine.handle.noop.resumption]p2
+  // Remarks: If noop_coroutine_handle is converted to
+  // coroutine_handle<>, calls to operator(), resume and
+  // destroy on that handle will also have no observable
+  // effects.
+  base.resume();
+  base.destroy();
+  base();
+  assert(base);
+  assert(base.done() == false);
+
+  TEST_IGNORE_NODISCARD h.promise();
+  assert(h.address() == base.address());
+  assert(h == base);
+  assert(h.address() != nullptr);
+  assert(std::coroutine_handle<>::from_address(h.address()) == base);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp
new file mode 100644
index 0000000..d240b64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.prom/promise.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise>
+// struct coroutine_handle<Promise>;
+
+// Promise& promise() const
+
+#include <coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct MyCoro {
+  struct promise_type {
+    void unhandled_exception() {}
+    void return_void() {}
+    std::suspend_never initial_suspend() { return {}; }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    MyCoro get_return_object() {
+      do_runtime_test();
+      return {};
+    }
+    void do_runtime_test() {
+      // Test that a coroutine_handle<const T> can be created from a const
+      // promise_type and that it represents the same coroutine as
+      // coroutine_handle<T>
+      using CH = std::coroutine_handle<promise_type>;
+      using CCH = std::coroutine_handle<const promise_type>;
+      const auto &cthis = *this;
+      CH h = CH::from_promise(*this);
+      CCH h2 = CCH::from_promise(*this);
+      CCH h3 = CCH::from_promise(cthis);
+      assert(&h.promise() == this);
+      assert(&h2.promise() == this);
+      assert(&h3.promise() == this);
+      assert(h.address() == h2.address());
+      assert(h2.address() == h3.address());
+    }
+  };
+};
+
+MyCoro do_runtime_test() {
+  co_await std::suspend_never{};
+}
+
+template <class Promise>
+void do_test(std::coroutine_handle<Promise>&& H) {
+
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.promise()), Promise&);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.promise());
+  }
+  {
+    auto const& CH = H;
+    ASSERT_SAME_TYPE(decltype(CH.promise()), Promise&);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(CH.promise());
+  }
+}
+
+int main(int, char**)
+{
+  do_test(std::coroutine_handle<int>{});
+  do_test(std::coroutine_handle<const int>{});
+  do_runtime_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/destroy.pass.cpp
new file mode 100644
index 0000000..ff87a03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/destroy.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// void destroy() const
+
+#include <coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class H>
+auto has_destroy_imp(H&& h, int) -> decltype(h.destroy(), std::true_type{});
+template <class H>
+auto has_destroy_imp(H&&, long) -> std::false_type;
+
+template <class H>
+constexpr bool has_destroy() {
+  return decltype(has_destroy_imp(std::declval<H>(), 0))::value;
+}
+
+template <class Promise>
+void do_test(std::coroutine_handle<Promise>&& H) {
+  using HType = std::coroutine_handle<Promise>;
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.destroy()), void);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.destroy());
+    static_assert(has_destroy<HType&>(), "");
+    static_assert(has_destroy<HType&&>(), "");
+  }
+  {
+    static_assert(has_destroy<HType const&>(), "");
+    static_assert(has_destroy<HType const&&>(), "");
+  }
+}
+
+int main(int, char**)
+{
+  do_test(std::coroutine_handle<>{});
+  do_test(std::coroutine_handle<int>{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/resume.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/resume.pass.cpp
new file mode 100644
index 0000000..91390d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/coroutine.handle.resumption/resume.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// <coroutine>
+
+// template <class Promise = void>
+// struct coroutine_handle;
+
+// void operator()() const
+// void resume() const
+
+#include <coroutine>
+#include <type_traits>
+#include <memory>
+#include <utility>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class H>
+auto has_resume_imp(H&& h, int) -> decltype(h.resume(), std::true_type{});
+template <class H>
+auto has_resume_imp(H&&, long) -> std::false_type;
+
+template <class H>
+constexpr bool has_resume() {
+  return decltype(has_resume_imp(std::declval<H>(), 0))::value;
+}
+
+
+template <class H>
+auto has_call_operator_imp(H&& h, int) -> decltype(h(), std::true_type{});
+template <class H>
+auto has_call_operator_imp(H&&, long) -> std::false_type;
+
+template <class H>
+constexpr bool has_call_operator() {
+  return decltype(has_call_operator_imp(std::declval<H>(), 0))::value;
+}
+
+template <class Promise>
+void do_test(std::coroutine_handle<Promise>&& H) {
+  using HType = std::coroutine_handle<Promise>;
+  // FIXME Add a runtime test
+  {
+    ASSERT_SAME_TYPE(decltype(H.resume()), void);
+    ASSERT_SAME_TYPE(decltype(H()), void);
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H.resume());
+    LIBCPP_ASSERT_NOT_NOEXCEPT(H());
+    static_assert(has_resume<HType&>(), "");
+    static_assert(has_resume<HType&&>(), "");
+    static_assert(has_call_operator<HType&>(), "");
+    static_assert(has_call_operator<HType&&>(), "");
+  }
+  {
+    static_assert(has_resume<HType const&>(), "");
+    static_assert(has_resume<HType const&&>(), "");
+    static_assert(has_call_operator<HType const&>(), "");
+    static_assert(has_call_operator<HType const&&>(), "");
+  }
+}
+
+int main(int, char**)
+{
+  do_test(std::coroutine_handle<>{});
+  do_test(std::coroutine_handle<int>{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/void_handle.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/void_handle.pass.cpp
new file mode 100644
index 0000000..2ad5224
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.handle/void_handle.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {
+  using promise_type = A*;
+};
+
+struct B {};
+struct C {};
+
+template <>
+struct std::coroutine_traits<A, int> {
+  using promise_type = int*;
+};
+template <class ...Args>
+struct std::coroutine_traits<B, Args...> {
+  using promise_type = B*;
+};
+template <>
+struct std::coroutine_traits<C> {
+  using promise_type = void;
+};
+
+template <class Expect, class T, class ...Args>
+void check_type() {
+  using P = typename std::coroutine_traits<T, Args...>::promise_type ;
+  static_assert(std::is_same<P, Expect>::value, "");
+};
+
+int main(int, char**)
+{
+  check_type<A*, A>();
+  check_type<int*, A, int>();
+  check_type<B*, B>();
+  check_type<void, C>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.traits/promise_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.traits/promise_type.pass.cpp
new file mode 100644
index 0000000..2eb9a6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.traits/promise_type.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class = typename T::promise_type>
+constexpr bool has_promise_type(int) { return true; }
+template <class>
+constexpr bool has_promise_type(long) { return false; }
+template <class T>
+constexpr bool has_promise_type() { return has_promise_type<T>(0); }
+
+struct A {
+  using promise_type = A*;
+};
+
+struct B {};
+struct C {};
+struct D {
+private:
+  using promise_type = void;
+};
+struct E {};
+
+template <>
+struct std::coroutine_traits<A, int> {
+  using promise_type = int*;
+};
+template <class ...Args>
+struct std::coroutine_traits<B, Args...> {
+  using promise_type = B*;
+};
+template <>
+struct std::coroutine_traits<C> {
+  using promise_type = void;
+};
+
+template <class Expect, class T, class ...Args>
+void check_type() {
+  using Traits = std::coroutine_traits<T, Args...>;
+  static_assert(has_promise_type<Traits>(), "");
+  static_assert(std::is_same<typename Traits::promise_type, Expect>::value, "");
+}
+
+template <class T, class ...Args>
+void check_no_type() {
+  using Traits = std::coroutine_traits<T, Args...>;
+  static_assert(!has_promise_type<Traits>(), "");
+}
+
+int main(int, char**)
+{
+  {
+    check_type<A*, A>();
+    check_type<int*, A, int>();
+    check_type<B*, B>();
+    check_type<void, C>();
+  }
+  {
+    check_no_type<D>();
+    check_no_type<E>();
+    check_no_type<C, int>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
new file mode 100644
index 0000000..a3a65c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_always.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+constexpr bool check_suspend_constexpr() {
+  std::suspend_always s{};
+  const std::suspend_always scopy(s);
+  std::suspend_always smove(std::move(s));
+  s = scopy;
+  s = std::move(smove);
+  return true;
+}
+
+template<class T>
+constexpr bool test_trivial_awaitable_constexpr(bool expected) {
+  T t;
+  assert(t.await_ready() == expected);
+  t.await_suspend(nullptr);
+  t.await_resume();
+  return true;
+}
+
+int main(int, char**)
+{
+  std::coroutine_handle<> h{};
+  std::suspend_always s{};
+  std::suspend_always const& cs = s;
+  {
+    ASSERT_NOEXCEPT(s.await_ready());
+    static_assert(std::is_same<decltype(s.await_ready()), bool>::value, "");
+    assert(s.await_ready() == false);
+    assert(cs.await_ready() == false);
+  }
+  {
+    ASSERT_NOEXCEPT(s.await_suspend(h));
+    static_assert(std::is_same<decltype(s.await_suspend(h)), void>::value, "");
+    s.await_suspend(h);
+    cs.await_suspend(h);
+  }
+  {
+    ASSERT_NOEXCEPT(s.await_resume());
+    static_assert(std::is_same<decltype(s.await_resume()), void>::value, "");
+    s.await_resume();
+    cs.await_resume();
+  }
+  {
+    static_assert(std::is_nothrow_default_constructible<std::suspend_always>::value, "");
+    static_assert(std::is_nothrow_copy_constructible<std::suspend_always>::value, "");
+    static_assert(std::is_nothrow_move_constructible<std::suspend_always>::value, "");
+    static_assert(std::is_nothrow_copy_assignable<std::suspend_always>::value, "");
+    static_assert(std::is_nothrow_move_assignable<std::suspend_always>::value, "");
+    static_assert(std::is_trivially_copyable<std::suspend_always>::value, "");
+    static_assert(check_suspend_constexpr(), "");
+  }
+  {
+    static_assert(test_trivial_awaitable_constexpr<std::suspend_always>(false));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
new file mode 100644
index 0000000..2b838b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/coroutine.trivial.awaitables/suspend_never.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+constexpr bool check_suspend_constexpr() {
+  std::suspend_never s{};
+  const std::suspend_never scopy(s); ((void)scopy);
+  std::suspend_never smove(std::move(s)); ((void)smove);
+  s = scopy;
+  s = std::move(smove);
+  return true;
+}
+
+template<class T>
+constexpr bool test_trivial_awaitable_constexpr(bool expected) {
+  T t;
+  assert(t.await_ready() == expected);
+  t.await_suspend(nullptr);
+  t.await_resume();
+  return true;
+}
+
+int main(int, char**)
+{
+  using H = std::coroutine_handle<>;
+  using S = std::suspend_never;
+  H h{};
+  S s{};
+  S const& cs = s;
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_ready()), "");
+    static_assert(std::is_same<decltype(s.await_ready()), bool>::value, "");
+    assert(s.await_ready() == true);
+    assert(cs.await_ready() == true);
+  }
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_suspend(h)), "");
+    static_assert(std::is_same<decltype(s.await_suspend(h)), void>::value, "");
+    s.await_suspend(h);
+    cs.await_suspend(h);
+  }
+  {
+    LIBCPP_STATIC_ASSERT(noexcept(s.await_resume()), "");
+    static_assert(std::is_same<decltype(s.await_resume()), void>::value, "");
+    s.await_resume();
+    cs.await_resume();
+  }
+  {
+    static_assert(std::is_nothrow_default_constructible<std::suspend_never>::value, "");
+    static_assert(std::is_nothrow_copy_constructible<std::suspend_never>::value, "");
+    static_assert(std::is_nothrow_move_constructible<std::suspend_never>::value, "");
+    static_assert(std::is_nothrow_copy_assignable<std::suspend_never>::value, "");
+    static_assert(std::is_nothrow_move_assignable<std::suspend_never>::value, "");
+    static_assert(std::is_trivially_copyable<std::suspend_never>::value, "");
+    static_assert(check_suspend_constexpr(), "");
+  }
+  {
+    static_assert(test_trivial_awaitable_constexpr<std::suspend_never>(true));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/await_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/await_result.pass.cpp
new file mode 100644
index 0000000..67b9e49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/await_result.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct coro_t {
+  struct promise_type {
+    coro_t get_return_object() {
+      std::coroutine_handle<promise_type>{};
+      return {};
+    }
+    std::suspend_never initial_suspend() { return {}; }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    static void unhandled_exception() {}
+  };
+};
+
+struct B {
+  ~B() {}
+  bool await_ready() { return true; }
+  B await_resume() { return {}; }
+  template <typename F> void await_suspend(F) {}
+};
+
+
+struct A {
+  ~A() {}
+  bool await_ready() { return true; }
+  int await_resume() { return 42; }
+  template <typename F> void await_suspend(F) {}
+};
+
+int last_value = -1;
+void set_value(int x) {
+  last_value = x;
+}
+
+coro_t f(int n) {
+  if (n == 0) {
+    set_value(0);
+    co_return;
+  }
+  int val = co_await A{};
+  ((void)val);
+  set_value(42);
+}
+
+coro_t g() { B val = co_await B{}; }
+
+int main(int, char**) {
+  last_value = -1;
+  f(0);
+  assert(last_value == 0);
+  f(1);
+  assert(last_value == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp
new file mode 100644
index 0000000..893b524
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/bool_await_suspend.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// See https://llvm.org/PR33271
+// UNSUPPORTED: ubsan
+
+#include <coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct coro_t {
+  struct promise_type {
+    coro_t get_return_object() {
+      return std::coroutine_handle<promise_type>::from_promise(*this);
+    }
+    std::suspend_never initial_suspend() { return {}; }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+  coro_t(std::coroutine_handle<promise_type> hh) : h(hh) {}
+  std::coroutine_handle<promise_type> h;
+};
+
+struct NoSuspend {
+  bool await_ready() { return false; }
+  void await_resume() {}
+  template <typename F> bool await_suspend(F) { return false; }
+};
+
+struct DoSuspend {
+  bool await_ready() { return false; }
+  void await_resume() {}
+  template <typename F> bool await_suspend(F) { return true; }
+};
+
+bool f_started, f_resumed = false;
+coro_t f() {
+  f_started = true;
+  co_await DoSuspend{};
+  f_resumed = true;
+}
+
+bool g_started, g_resumed = false;
+coro_t g() {
+  g_started = true;
+  co_await NoSuspend{};
+  g_resumed = true;
+}
+
+int main(int, char**) {
+  assert(!f_started && !f_resumed && !g_started && !g_resumed);
+  auto fret = f();
+  assert(f_started && !f_resumed);
+  fret.h.destroy();
+  assert(f_started && !f_resumed);
+  g();
+  assert(g_started && g_resumed);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/expected.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/expected.pass.cpp
new file mode 100644
index 0000000..7db7ebc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/expected.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+
+struct error_tag { };
+
+template <typename T, typename Error = int>
+struct expected {
+
+  struct Data {
+    Data() : val(), error() { }
+    Data(T v, Error e) : val(v), error(e) { }
+    T val;
+    Error error;
+  };
+  std::shared_ptr<Data> data;
+
+  expected(T val) : data(std::make_shared<Data>(val, Error())) {}
+  expected(error_tag, Error error) : data(std::make_shared<Data>(T(), error)) {}
+  expected(std::shared_ptr<Data> p) : data(p) {}
+
+  struct promise_type {
+    std::shared_ptr<Data> data;
+    expected get_return_object() { data = std::make_shared<Data>(); return {data}; }
+    std::suspend_never initial_suspend() { return {}; }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    void return_value(T v) { data->val = v; data->error = {}; }
+    void unhandled_exception() {}
+  };
+
+  bool await_ready() { return !data->error; }
+  T await_resume() { return data->val; }
+  void await_suspend(std::coroutine_handle<promise_type> h) {
+    h.promise().data->error = data->error;
+    h.destroy();
+  }
+
+  T const& value() { return data->val; }
+  Error const& error() { return data->error; }
+};
+
+expected<int> g() { return {0}; }
+expected<int> h() { return {error_tag{}, 42}; }
+
+extern "C" void print(int);
+
+bool f1_started, f1_resumed = false;
+expected<int> f1() {
+  f1_started = true;
+  (void)(co_await g());
+  f1_resumed = true;
+  co_return 100;
+}
+
+bool f2_started, f2_resumed = false;
+expected<int> f2() {
+  f2_started = true;
+  (void)(co_await h());
+  f2_resumed = true;
+  co_return 200;
+}
+
+int main(int, char**) {
+  auto c1 = f1();
+  assert(f1_started && f1_resumed);
+  assert(c1.value() == 100);
+  assert(c1.error() == 0);
+
+  auto c2 = f2();
+  assert(f2_started && !f2_resumed);
+  assert(c2.value() == 0);
+  assert(c2.error() == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp
new file mode 100644
index 0000000..d392e71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/fullexpr-dtor.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+int alive = 0;
+int ctor_called = 0;
+int dtor_called = 0;
+void reset() {
+  assert(alive == 0);
+  alive = 0;
+  ctor_called = 0;
+  dtor_called = 0;
+}
+struct Noisy {
+  Noisy() { ++alive; ++ctor_called; }
+  ~Noisy() { --alive; ++dtor_called; }
+  Noisy(Noisy const&) = delete;
+};
+
+struct Bug {
+  bool await_ready() { return true; }
+  void await_suspend(std::coroutine_handle<>) {}
+  Noisy await_resume() { return {}; }
+};
+struct coro2 {
+  struct promise_type {
+    std::suspend_never initial_suspend() { return {}; }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    coro2 get_return_object() { return {}; }
+    void return_void() {}
+    Bug yield_value(int) { return {}; }
+    void unhandled_exception() {}
+  };
+};
+
+// Checks that destructors are correctly invoked for the object returned by
+// coawait.
+coro2 a() {
+  reset();
+  {
+    auto x = co_await Bug{};
+    assert(alive == 1);
+    assert(ctor_called == 1);
+    assert(dtor_called == 0);
+    ((void)x);
+  }
+  assert(alive == 0);
+  assert(dtor_called == 1);
+}
+
+coro2 b() {
+  reset();
+  {
+    co_await Bug{};
+    assert(ctor_called == 1);
+    assert(dtor_called == 1);
+    assert(alive == 0);
+  }
+  assert(ctor_called == 1);
+  assert(dtor_called == 1);
+  assert(alive == 0);
+
+}
+
+coro2 c() {
+  reset();
+  {
+    auto x = co_yield 42;
+    assert(alive == 1);
+    assert(ctor_called == 1);
+    assert(dtor_called == 0);
+  }
+  assert(alive == 0);
+  assert(ctor_called == 1);
+  assert(dtor_called == 1);
+}
+
+coro2 d() {
+  reset();
+  {
+    co_yield 42;
+    assert(ctor_called == 1);
+    assert(dtor_called == 1);
+    assert(alive == 0);
+  }
+  assert(alive == 0);
+  assert(ctor_called == 1);
+  assert(dtor_called == 1);
+}
+
+int main(int, char**) {
+  a();
+  b();
+  c();
+  d();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/generator.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/generator.pass.cpp
new file mode 100644
index 0000000..4b02f2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/generator.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+// See https://llvm.org/PR33271
+// UNSUPPORTED: ubsan
+
+#include <coroutine>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Ty> struct generator {
+  struct promise_type {
+    Ty current_value;
+    std::suspend_always yield_value(Ty value) {
+      this->current_value = value;
+      return {};
+    }
+    std::suspend_always initial_suspend() { return {}; }
+    std::suspend_always final_suspend() noexcept { return {}; }
+    generator get_return_object() { return generator{this}; };
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+
+  struct iterator {
+    std::coroutine_handle<promise_type> Coro_;
+    bool Done_;
+
+    iterator(std::coroutine_handle<promise_type> Coro, bool Done)
+        : Coro_(Coro), Done_(Done) {}
+
+    iterator &operator++() {
+      Coro_.resume();
+      Done_ = Coro_.done();
+      return *this;
+    }
+
+    bool operator==(iterator const &_Right) const {
+      return Done_ == _Right.Done_;
+    }
+
+    bool operator!=(iterator const &_Right) const { return !(*this == _Right); }
+
+    Ty const &operator*() const { return Coro_.promise().current_value; }
+
+    Ty const *operator->() const { return &(operator*()); }
+  };
+
+  iterator begin() {
+    p.resume();
+    return {p, p.done()};
+  }
+
+  iterator end() { return {p, true}; }
+
+  generator(generator &&rhs) : p(rhs.p) { rhs.p = nullptr; }
+
+  ~generator() {
+    if (p)
+      p.destroy();
+  }
+
+private:
+  explicit generator(promise_type *promise)
+      : p(std::coroutine_handle<promise_type>::from_promise(*promise)) {}
+
+  std::coroutine_handle<promise_type> p;
+};
+
+struct minig {
+  struct promise_type {
+    int current_value;
+    std::suspend_always yield_value(int value) {
+      this->current_value = value;
+      return {};
+    }
+    std::suspend_always initial_suspend() { return {}; }
+    std::suspend_always final_suspend() noexcept { return {}; }
+    minig get_return_object() { return minig{this}; };
+    void return_void() {}
+    void unhandled_exception() {}
+  };
+
+  bool move_next() {
+    p.resume();
+    return !p.done();
+  }
+  int current_value() { return p.promise().current_value; }
+
+  minig(minig &&rhs) : p(rhs.p) { rhs.p = nullptr; }
+
+  ~minig() {
+    if (p)
+      p.destroy();
+  }
+
+private:
+  explicit minig(promise_type *promise)
+      : p(std::coroutine_handle<promise_type>::from_promise(*promise)) {}
+
+  std::coroutine_handle<promise_type> p;
+};
+
+
+minig mini_count(int n) {
+  for (int i = 0; i < n; i++) {
+    co_yield i;
+  }
+}
+
+generator<int> count(int n) {
+  for (int i = 0; i < n; ++i)
+    co_yield i;
+}
+
+generator<int> range(int from, int n) {
+  for (int i = from; i < n; ++i)
+    co_yield i;
+}
+
+void test_count() {
+  const std::vector<int> expect = {0, 1, 2, 3, 4};
+  std::vector<int> got;
+  for (auto x : count(5))
+    got.push_back(x);
+  assert(expect == got);
+}
+
+void test_range() {
+  int sum = 0;
+   for (auto v: range(1, 20))
+      sum += v;
+   assert(sum == 190);
+}
+
+void test_mini_generator() {
+  int sum = 0;
+  auto g = mini_count(5);
+  while (g.move_next()) {
+     sum += g.current_value();
+  }
+  assert(sum == 10);
+}
+
+int main(int, char**) {
+  test_count();
+  test_range();
+  test_mini_generator();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/go.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/go.pass.cpp
new file mode 100644
index 0000000..22380af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/go.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <cassert>
+#include <coroutine>
+#include <memory>
+
+#include "test_macros.h"
+
+bool cancel = false;
+
+struct goroutine
+{
+  static int const N = 10;
+  static int count;
+  static std::coroutine_handle<> stack[N];
+
+  static void schedule(std::coroutine_handle<>& rh)
+  {
+    assert(count < N);
+    stack[count++] = rh;
+    rh = nullptr;
+  }
+
+  ~goroutine() {}
+
+  static void run_one()
+  {
+    assert(count > 0);
+    stack[--count]();
+  }
+
+  struct promise_type
+  {
+    std::suspend_never initial_suspend() {
+      return {};
+    }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    goroutine get_return_object() {
+      return{};
+    }
+    void unhandled_exception() {}
+  };
+};
+int goroutine::count;
+std::coroutine_handle<> goroutine::stack[N];
+
+std::coroutine_handle<goroutine::promise_type> workaround;
+
+class channel;
+
+struct push_awaiter {
+  channel* ch;
+  bool await_ready() {return false; }
+  void await_suspend(std::coroutine_handle<> rh);
+  void await_resume() {}
+};
+
+struct pull_awaiter {
+  channel * ch;
+
+  bool await_ready();
+  void await_suspend(std::coroutine_handle<> rh);
+  int await_resume();
+};
+
+class channel
+{
+  using T = int;
+
+  friend struct push_awaiter;
+  friend struct pull_awaiter;
+
+  T const* pvalue = nullptr;
+  std::coroutine_handle<> reader = nullptr;
+  std::coroutine_handle<> writer = nullptr;
+public:
+  push_awaiter push(T const& value)
+  {
+    assert(pvalue == nullptr);
+    assert(!writer);
+    pvalue = &value;
+
+    return { this };
+  }
+
+  pull_awaiter pull()
+  {
+    assert(!reader);
+
+    return { this };
+  }
+
+  void sync_push(T const& value)
+  {
+    assert(!pvalue);
+    pvalue = &value;
+    assert(reader);
+    reader();
+    assert(!pvalue);
+    reader = nullptr;
+  }
+
+  auto sync_pull()
+  {
+    while (!pvalue) goroutine::run_one();
+    auto result = *pvalue;
+    pvalue = nullptr;
+    if (writer)
+    {
+      auto wr = writer;
+      writer = nullptr;
+      wr();
+    }
+    return result;
+  }
+};
+
+void push_awaiter::await_suspend(std::coroutine_handle<> rh)
+{
+  ch->writer = rh;
+  if (ch->reader) goroutine::schedule(ch->reader);
+}
+
+
+bool pull_awaiter::await_ready() {
+  return !!ch->writer;
+}
+void pull_awaiter::await_suspend(std::coroutine_handle<> rh) {
+  ch->reader = rh;
+}
+int pull_awaiter::await_resume() {
+  auto result = *ch->pvalue;
+  ch->pvalue = nullptr;
+  if (ch->writer) {
+    //goroutine::schedule(ch->writer);
+    auto wr = ch->writer;
+    ch->writer = nullptr;
+    wr();
+  }
+  return result;
+}
+
+goroutine pusher(channel& left, channel& right)
+{
+  for (;;) {
+    auto val = co_await left.pull();
+    co_await right.push(val + 1);
+  }
+}
+
+const int N = 100;
+channel c[N + 1];
+
+int main(int, char**) {
+  for (int i = 0; i < N; ++i)
+    pusher(c[i], c[i + 1]);
+
+  c[0].sync_push(0);
+  int result = c[N].sync_pull();
+
+  assert(result == 100);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp
new file mode 100644
index 0000000..fde3096
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/multishot_func.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <cassert>
+
+#include "test_macros.h"
+
+// This file tests, multishot, movable std::function like thing using coroutine
+// for compile-time type erasure and unerasure.
+template <typename R> struct func {
+  struct Input {R a, b;};
+
+  struct promise_type {
+    Input* I;
+    R result;
+    func get_return_object() { return {this}; }
+    std::suspend_always initial_suspend() { return {}; }
+    std::suspend_never final_suspend() noexcept { return {}; }
+    void return_void() {}
+    template <typename F>
+    std::suspend_always yield_value(F&& f) {
+      result = f(I->a, I->b);
+      return {};
+    }
+    void unhandled_exception() {}
+  };
+
+  R operator()(Input I) {
+    h.promise().I = &I;
+    h.resume();
+    R result = h.promise().result;
+    return result;
+  };
+
+  func() {}
+  func(func &&rhs) : h(rhs.h) { rhs.h = nullptr; }
+  func(func const &) = delete;
+
+  func &operator=(func &&rhs) {
+    if (this != &rhs) {
+      if (h)
+        h.destroy();
+      h = rhs.h;
+      rhs.h = nullptr;
+    }
+    return *this;
+  }
+
+  template <typename F> static func Create(F f) {
+    for (;;) {
+      co_yield f;
+    }
+  }
+
+  template <typename F> func(F f) : func(Create(f)) {}
+
+  ~func() {
+    if (h)
+      h.destroy();
+  }
+
+private:
+  func(promise_type *promise)
+      : h(std::coroutine_handle<promise_type>::from_promise(*promise)) {}
+  std::coroutine_handle<promise_type> h;
+};
+
+int Do(int acc, int n, func<int> f) {
+  for (int i = 0; i < n; ++i)
+    acc = f({acc, i});
+  return acc;
+}
+
+int main(int, char**) {
+  int result = Do(1, 10, [](int a, int b) {return a + b;});
+  assert(result == 46);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp
new file mode 100644
index 0000000..68c11d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.coroutines/end.to.end/oneshot_func.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-no-coroutines
+
+#include <coroutine>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+// This file tests, one shot, movable std::function like thing using coroutine
+// for compile-time type erasure and unerasure.
+
+template <typename R> struct func {
+  struct promise_type {
+    R result;
+    func get_return_object() { return {this}; }
+    std::suspend_always initial_suspend() { return {}; }
+    std::suspend_always final_suspend() noexcept { return {}; }
+    void return_value(R v) { result = v; }
+    void unhandled_exception() {}
+  };
+
+  R operator()() {
+    h.resume();
+    R result = h.promise().result;
+    h.destroy();
+    h = nullptr;
+    return result;
+  };
+
+  func() {}
+  func(func &&rhs) : h(rhs.h) { rhs.h = nullptr; }
+  func(func const &) = delete;
+
+  func &operator=(func &&rhs) {
+    if (this != &rhs) {
+      if (h)
+        h.destroy();
+      h = rhs.h;
+      rhs.h = nullptr;
+    }
+    return *this;
+  }
+
+  template <typename F> static func Create(F f) { co_return f(); }
+
+  template <typename F> func(F f) : func(Create(f)) {}
+
+  ~func() {
+    if (h)
+      h.destroy();
+  }
+
+private:
+  func(promise_type *promise)
+      : h(std::coroutine_handle<promise_type>::from_promise(*promise)) {}
+  std::coroutine_handle<promise_type> h;
+};
+
+int main(int, char**) {
+  func<int> f = func<int>::Create([]() { return 44; });
+  assert(f() == 44);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/align_val_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/align_val_t.pass.cpp
new file mode 100644
index 0000000..a592fba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/align_val_t.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// enum class align_val_t : size_t {}
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <new>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    static_assert(std::is_enum<std::align_val_t>::value, "");
+    static_assert(std::is_same<std::underlying_type<std::align_val_t>::type, std::size_t>::value, "");
+    static_assert(!std::is_constructible<std::align_val_t, std::size_t>::value, "");
+    static_assert(!std::is_constructible<std::size_t, std::align_val_t>::value, "");
+  }
+  {
+    constexpr auto a = std::align_val_t(0);
+    constexpr auto b = std::align_val_t(32);
+    constexpr auto c = std::align_val_t(-1);
+    static_assert(a != b, "");
+    static_assert(a == std::align_val_t(0), "");
+    static_assert(b == std::align_val_t(32), "");
+    static_assert(static_cast<std::size_t>(c) == (std::size_t)-1, "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/bad.alloc/bad_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/bad.alloc/bad_alloc.pass.cpp
new file mode 100644
index 0000000..a4016bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/bad.alloc/bad_alloc.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test bad_alloc
+
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::bad_alloc>::value),
+                 "std::is_base_of<std::exception, std::bad_alloc>::value");
+    static_assert(std::is_polymorphic<std::bad_alloc>::value,
+                 "std::is_polymorphic<std::bad_alloc>::value");
+    std::bad_alloc b;
+    std::bad_alloc b2 = b;
+    b2 = b;
+    const char* w = b2.what();
+    assert(w);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/new.badlength/bad_array_new_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/new.badlength/bad_array_new_length.pass.cpp
new file mode 100644
index 0000000..4018383
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/new.badlength/bad_array_new_length.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test bad_array_new_length
+
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::bad_alloc, std::bad_array_new_length>::value),
+                  "std::is_base_of<std::bad_alloc, std::bad_array_new_length>::value");
+    static_assert(std::is_polymorphic<std::bad_array_new_length>::value,
+                 "std::is_polymorphic<std::bad_array_new_length>::value");
+    std::bad_array_new_length b;
+    std::bad_array_new_length b2 = b;
+    b2 = b;
+    const char* w = b2.what();
+    assert(w);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/new.handler/new_handler.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/new.handler/new_handler.pass.cpp
new file mode 100644
index 0000000..b6fb158
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/new.handler/new_handler.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test new_handler
+
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f() {}
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::new_handler, void(*)()>::value), "");
+    std::new_handler p = f;
+    assert(p == &f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/set.new.handler/get_new_handler.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/set.new.handler/get_new_handler.pass.cpp
new file mode 100644
index 0000000..c5725bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/set.new.handler/get_new_handler.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test get_new_handler
+
+// FIXME: When libc++ is linked against vcruntime (i.e. the default config in
+// MSVC mode), the declarations of std::set_new_handler and std::get_new_handler
+// are provided by vcruntime/UCRT's new.h. However, that header actually only
+// declares set_new_handler - it's missing a declaration of get_new_handler.
+
+// XFAIL: msvc && stdlib=libc++
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+int main(int, char**)
+{
+    assert(std::get_new_handler() == 0);
+    std::set_new_handler(f1);
+    assert(std::get_new_handler() == f1);
+    std::set_new_handler(f2);
+    assert(std::get_new_handler() == f2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/set.new.handler/set_new_handler.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/set.new.handler/set_new_handler.pass.cpp
new file mode 100644
index 0000000..b0becc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/alloc.errors/set.new.handler/set_new_handler.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test set_new_handler
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+int main(int, char**)
+{
+    assert(std::set_new_handler(f1) == 0);
+    assert(std::set_new_handler(f2) == f1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/destroying_delete_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/destroying_delete_t.pass.cpp
new file mode 100644
index 0000000..7f52e2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/destroying_delete_t.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// struct destroying_delete_t {
+//   explicit destroying_delete_t() = default;
+// };
+// inline constexpr destroying_delete_t destroying_delete{};
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <new>
+
+#include <cassert>
+#include "test_macros.h"
+
+struct A {
+  void *data;
+  A();
+  ~A();
+
+  static A* New();
+  void operator delete(A*, std::destroying_delete_t);
+};
+
+bool A_constructed = false;
+bool A_destroyed = false;
+bool A_destroying_deleted = false;
+
+A::A() {
+  A_constructed = true;
+}
+
+A::~A() {
+  A_destroyed = true;
+}
+
+A* A::New() {
+  return new(::operator new(sizeof(A))) A();
+}
+
+void A::operator delete(A* a, std::destroying_delete_t) {
+  A_destroying_deleted = true;
+  ::operator delete(a);
+}
+
+// Only test the definition of the library feature-test macro when the compiler
+// supports the feature -- otherwise we don't define the library feature-test
+// macro.
+#if defined(__cpp_impl_destroying_delete)
+#  if !defined(__cpp_lib_destroying_delete)
+#    error "Expected __cpp_lib_destroying_delete to be defined"
+#  elif __cpp_lib_destroying_delete < 201806L
+#    error "Unexpected value of __cpp_lib_destroying_delete"
+#  endif
+#else
+#  if defined(__cpp_lib_destroying_delete)
+#    error "The library feature-test macro for destroying delete shouldn't be defined when the compiler doesn't support the language feature"
+#  endif
+#endif
+
+int main(int, char**) {
+  // Ensure that we call the destroying delete and not the destructor.
+  A* ap = A::New();
+  assert(A_constructed);
+  delete ap;
+  assert(!A_destroyed);
+  assert(A_destroying_deleted);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/destroying_delete_t_declaration.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/destroying_delete_t_declaration.pass.cpp
new file mode 100644
index 0000000..b98af1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/destroying_delete_t_declaration.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// struct destroying_delete_t {
+//   explicit destroying_delete_t() = default;
+// };
+// inline constexpr destroying_delete_t destroying_delete{};
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test only the library parts of destroying delete in this test.
+// Verify that it's properly declared after C++17 and that it's constexpr.
+//
+// Other tests will check the language side of things -- but those are
+// limited to newer compilers.
+
+#include <new>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_convertible.h"
+
+#ifdef __cpp_impl_destroying_delete
+# ifndef __cpp_lib_destroying_delete
+#   error "Expected __cpp_lib_destroying_delete to be defined"
+#   elif __cpp_lib_destroying_delete < 201806L
+#     error "Unexpected value of __cpp_lib_destroying_delete"
+#   endif
+#else
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined unless the compiler supports it"
+# endif
+#endif
+
+constexpr bool test_constexpr(std::destroying_delete_t) {
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(std::is_default_constructible<std::destroying_delete_t>::value, "");
+  static_assert(!test_convertible<std::destroying_delete_t>(), "");
+  constexpr std::destroying_delete_t dd{};
+  static_assert(&dd != &std::destroying_delete, "");
+  static_assert(test_constexpr(std::destroying_delete), "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/hardware_inference_size.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/hardware_inference_size.compile.pass.cpp
new file mode 100644
index 0000000..ae277d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/hardware_inference_size.compile.pass.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: (clang || apple-clang) && stdlib=libc++
+
+#include <new>
+
+#include "test_macros.h"
+
+ASSERT_SAME_TYPE(decltype(std::hardware_destructive_interference_size), const std::size_t);
+ASSERT_SAME_TYPE(decltype(std::hardware_constructive_interference_size), const std::size_t);
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/delete_align_val_t_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/delete_align_val_t_replace.pass.cpp
new file mode 100644
index 0000000..3dd7855
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/delete_align_val_t_replace.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test aligned operator delete replacement.
+
+// UNSUPPORTED: sanitizer-new-delete, c++03, c++11, c++14
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int aligned_delete_called = 0;
+
+void reset() {
+    unsized_delete_called = 0;
+    unsized_delete_nothrow_called = 0;
+    aligned_delete_called = 0;
+}
+
+alignas(OverAligned) char DummyData[OverAligned * 4];
+
+void* operator new [] (std::size_t s, std::align_val_t)
+{
+    assert(s <= sizeof(DummyData));
+    return DummyData;
+}
+
+void operator delete [] (void* p) noexcept
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete [] (void* p, const std::nothrow_t&) noexcept
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete [] (void*, std::align_val_t) noexcept
+{
+    ++aligned_delete_called;
+}
+
+struct alignas(OverAligned) A {};
+struct alignas(std::max_align_t) B {};
+
+int main(int, char**)
+{
+    reset();
+    {
+        B *b = new B[2];
+        DoNotOptimize(b);
+        assert(0 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(0 == aligned_delete_called);
+
+        delete [] b;
+        DoNotOptimize(b);
+        assert(1 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(0 == aligned_delete_called);
+    }
+    reset();
+    {
+        A *a = new A[2];
+        DoNotOptimize(a);
+        assert(0 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(0 == aligned_delete_called);
+
+        delete [] a;
+        DoNotOptimize(a);
+        assert(0 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(1 == aligned_delete_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t.pass.cpp
new file mode 100644
index 0000000..5281484
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+// Aligned allocation was not provided before macosx10.13 and as a result we
+// get availability errors when the deployment target is older than macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new
+
+#include <new>
+#include <cstddef>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+int A_constructed = 0;
+
+struct alignas(OverAligned) A
+{
+    A() { ++A_constructed;}
+    ~A() { --A_constructed;}
+};
+
+void test_throw_max_size() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    std::set_new_handler(my_new_handler);
+    try
+    {
+        void* vp = operator new[] (std::numeric_limits<std::size_t>::max(),
+                                   static_cast<std::align_val_t>(32));
+        ((void)vp);
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(new_handler_called == 1);
+    }
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        A* ap = new A[2];
+        assert(ap);
+        assert(reinterpret_cast<std::uintptr_t>(ap) % OverAligned == 0);
+        assert(A_constructed == 2);
+        delete [] ap;
+        assert(A_constructed == 0);
+    }
+    {
+        test_throw_max_size();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_nothrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_nothrow.pass.cpp
new file mode 100644
index 0000000..22f67eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_nothrow.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+// Aligned allocation was not provided before macosx10.13 and as a result we
+// get availability errors when the deployment target is older than macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new (nothrow)
+
+#include <new>
+#include <cstddef>
+#include <cstdint>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+int A_constructed = 0;
+
+struct alignas(OverAligned) A
+{
+    A() { ++A_constructed; }
+    ~A() { --A_constructed; }
+};
+
+void test_max_alloc() {
+    std::set_new_handler(my_new_handler);
+    auto do_test = []() {
+        void* vp = operator new [](std::numeric_limits<std::size_t>::max(),
+                                 std::align_val_t(OverAligned),
+                                 std::nothrow);
+        assert(new_handler_called == 1);
+        assert(vp == 0);
+    };
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        do_test();
+    }
+    catch (...)
+    {
+        assert(false);
+    }
+#else
+    do_test();
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        A* ap = new(std::nothrow) A[3];
+        assert(ap);
+        assert(reinterpret_cast<std::uintptr_t>(ap) % OverAligned == 0);
+        assert(A_constructed == 3);
+        delete [] ap;
+        assert(!A_constructed);
+    }
+    {
+        test_max_alloc();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_nothrow_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_nothrow_replace.pass.cpp
new file mode 100644
index 0000000..40d4a86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_nothrow_replace.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: sanitizer-new-delete
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// Aligned allocation was not provided before macosx10.13 and as a result we
+// get availability errors when the deployment target is older than macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new nothrow by replacing only operator new
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int A_constructed = 0;
+
+struct alignas(OverAligned) A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int B_constructed = 0;
+
+struct B {
+  std::max_align_t member;
+  B() { ++B_constructed; }
+  ~B() { --B_constructed; }
+};
+
+int new_called = 0;
+alignas(OverAligned) char Buff[OverAligned * 3];
+
+void* operator new[](std::size_t s, std::align_val_t a) TEST_THROW_SPEC(std::bad_alloc)
+{
+    assert(!new_called);
+    assert(s <= sizeof(Buff));
+    assert(static_cast<std::size_t>(a) == OverAligned);
+    ++new_called;
+    return Buff;
+}
+
+void  operator delete[](void* p, std::align_val_t a) TEST_NOEXCEPT
+{
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(p == Buff);
+    assert(static_cast<std::size_t>(a) == OverAligned);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called);
+    --new_called;
+}
+
+int main(int, char**)
+{
+    {
+        A* ap = new (std::nothrow) A[2];
+        assert(ap);
+        assert(A_constructed == 2);
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called);
+        delete [] ap;
+        assert(A_constructed == 0);
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+    }
+    {
+        B* bp = new (std::nothrow) B[2];
+        assert(bp);
+        assert(B_constructed == 2);
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+        delete [] bp;
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+        assert(!B_constructed);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_replace.pass.cpp
new file mode 100644
index 0000000..6ac3450
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_align_val_t_replace.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: sanitizer-new-delete
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new replacement
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cstdint>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int A_constructed = 0;
+
+struct alignas(OverAligned) A {
+    A() { ++A_constructed;}
+    ~A() { --A_constructed;}
+};
+
+
+int B_constructed = 0;
+
+struct alignas(std::max_align_t) B
+{
+    std::max_align_t member;
+    B() { ++B_constructed;}
+    ~B() { --B_constructed;}
+};
+
+int new_called = 0;
+
+alignas(OverAligned) char DummyData[OverAligned * 4];
+
+void* operator new[](std::size_t s, std::align_val_t a) TEST_THROW_SPEC(std::bad_alloc)
+{
+    assert(new_called == 0); // We already allocated
+    assert(s <= sizeof(DummyData));
+    assert(static_cast<std::size_t>(a) == OverAligned);
+    ++new_called;
+    void *Ret = DummyData;
+    DoNotOptimize(Ret);
+    return Ret;
+}
+
+void  operator delete[](void* p, std::align_val_t) TEST_NOEXCEPT
+{
+    assert(new_called == 1);
+    --new_called;
+    assert(p == DummyData);
+    DoNotOptimize(p);
+}
+
+
+int main(int, char**)
+{
+    {
+        A* ap = new A[3];
+        assert(ap);
+        assert(A_constructed == 3);
+        assert(new_called);
+        delete [] ap;
+        assert(!A_constructed);
+        assert(!new_called);
+    }
+    {
+        B* bp = new B[3];
+        assert(bp);
+        assert(B_constructed == 3);
+        assert(!new_called);
+        delete [] bp;
+        assert(!new_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array.pass.cpp
new file mode 100644
index 0000000..55dc5c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new[]
+// NOTE: asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+
+#include <new>
+#include <cstddef>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+int A_constructed = 0;
+
+struct A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    std::set_new_handler(my_new_handler);
+    try
+    {
+        void* vp = operator new[] (std::numeric_limits<std::size_t>::max());
+        DoNotOptimize(vp);
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(new_handler_called == 1);
+    }
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+    A* ap = new A[3];
+    DoNotOptimize(ap);
+    assert(ap);
+    assert(A_constructed == 3);
+    delete [] ap;
+    DoNotOptimize(ap);
+    assert(A_constructed == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_nothrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_nothrow.pass.cpp
new file mode 100644
index 0000000..ce8b18d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_nothrow.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new [] (nothrow)
+// NOTE: asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+
+#include <new>
+#include <cstddef>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+int A_constructed = 0;
+
+struct A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int main(int, char**)
+{
+    new_handler_called = 0;
+    std::set_new_handler(my_new_handler);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+#endif
+    {
+        void* vp = operator new [] (std::numeric_limits<std::size_t>::max(), std::nothrow);
+        DoNotOptimize(vp);
+        assert(new_handler_called == 1);
+        assert(vp == 0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+    A* ap = new(std::nothrow) A[3];
+    DoNotOptimize(ap);
+    assert(ap);
+    assert(A_constructed == 3);
+    delete [] ap;
+    DoNotOptimize(ap);
+    assert(A_constructed == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_nothrow_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_nothrow_replace.pass.cpp
new file mode 100644
index 0000000..267e1d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_nothrow_replace.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new [] nothrow by replacing only operator new
+
+// UNSUPPORTED: sanitizer-new-delete
+// XFAIL: libcpp-no-vcruntime
+// XFAIL: LIBCXX-AIX-FIXME
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_called = 0;
+
+void* operator new(std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    ++new_called;
+    void* ret = std::malloc(s);
+    if (!ret) std::abort(); // placate MSVC's unchecked malloc warning
+    return  ret;
+}
+
+void  operator delete(void* p) TEST_NOEXCEPT
+{
+    --new_called;
+    std::free(p);
+}
+
+int A_constructed = 0;
+
+struct A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int main(int, char**)
+{
+    new_called = 0;
+    A *ap = new (std::nothrow) A[3];
+    DoNotOptimize(ap);
+    assert(ap);
+    assert(A_constructed == 3);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called);
+    delete [] ap;
+    DoNotOptimize(ap);
+    assert(A_constructed == 0);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_replace.pass.cpp
new file mode 100644
index 0000000..4687443
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_array_replace.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new[] replacement by replacing only operator new
+
+// UNSUPPORTED: sanitizer-new-delete
+// XFAIL: libcpp-no-vcruntime
+// XFAIL: LIBCXX-AIX-FIXME
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_called = 0;
+
+void* operator new(std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    ++new_called;
+    void* ret = std::malloc(s);
+    if (!ret) std::abort(); // placate MSVC's unchecked malloc warning
+    return  ret;
+}
+
+void  operator delete(void* p) TEST_NOEXCEPT
+{
+    --new_called;
+    std::free(p);
+}
+
+int A_constructed = 0;
+
+struct A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int main(int, char**)
+{
+    new_called = 0;
+    A *ap = new A[3];
+    DoNotOptimize(ap);
+    assert(ap);
+    assert(A_constructed == 3);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called == 1);
+    delete [] ap;
+    DoNotOptimize(ap);
+    assert(A_constructed == 0);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.verify.cpp
new file mode 100644
index 0000000..efd84bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new[](std::size_t);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+
+int main(int, char**) {
+    ::operator new[](4);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.verify.cpp
new file mode 100644
index 0000000..1551a05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new[](std::size_t, std::align_val_t);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+
+int main(int, char**) {
+    ::operator new[](4, std::align_val_t{4});  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.verify.cpp
new file mode 100644
index 0000000..ec81962
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new[](std::size_t, std::align_val_t, std::nothrow_t &);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+
+int main(int, char**) {
+    ::operator new[](4, std::align_val_t{4}, std::nothrow);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.verify.cpp
new file mode 100644
index 0000000..066ca1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new[](std::size_t, std::nothrow_t &);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+
+int main(int, char**) {
+    ::operator new[](4, std::nothrow);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array11.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array11.pass.cpp
new file mode 100644
index 0000000..c6cacb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array11.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete[] replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// REQUIRES: c++03 || c++11
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete[](void* p) TEST_NOEXCEPT
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, std::size_t) TEST_NOEXCEPT
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main(int, char**)
+{
+
+    A* x = new A[3];
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete [] x;
+    assert(1 == unsized_delete_called);
+    assert(0 == sized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array14.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array14.pass.cpp
new file mode 100644
index 0000000..21663cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array14.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete[] replacement.
+
+// UNSUPPORTED: sanitizer-new-delete, c++03, c++11
+
+// NOTE: Clang does not enable sized-deallocation in C++14 and beyond by
+// default. It is only enabled when -fsized-deallocation is given.
+// XFAIL: clang, apple-clang
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete[](void* p) TEST_NOEXCEPT
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, std::size_t) TEST_NOEXCEPT
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main(int, char**)
+{
+    A* x = new A[3];
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete [] x;
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(1 == sized_delete_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_calls_unsized_delete_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_calls_unsized_delete_array.pass.cpp
new file mode 100644
index 0000000..026250d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_calls_unsized_delete_array.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator [] delete calls the unsized operator [] delete.
+// When sized operator delete [] is not available (ex C++11) then the unsized
+// operator delete [] is called directly.
+
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int delete_called = 0;
+int delete_nothrow_called = 0;
+
+void operator delete[](void* p) TEST_NOEXCEPT
+{
+    ++delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++delete_nothrow_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main(int, char**)
+{
+    A *x = new A[3];
+    DoNotOptimize(x);
+    assert(0 == delete_called);
+    assert(0 == delete_nothrow_called);
+
+    delete [] x;
+    DoNotOptimize(x);
+    assert(1 == delete_called);
+    assert(0 == delete_nothrow_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_fsizeddeallocation.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_fsizeddeallocation.pass.cpp
new file mode 100644
index 0000000..2a5bb21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_fsizeddeallocation.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete[] replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// UNSUPPORTED: sanitizer-new-delete
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// REQUIRES: -fsized-deallocation
+// ADDITIONAL_COMPILE_FLAGS: -fsized-deallocation
+
+#if !defined(__cpp_sized_deallocation)
+# error __cpp_sized_deallocation should be defined
+#endif
+
+#if !(__cpp_sized_deallocation >= 201309L)
+# error expected __cpp_sized_deallocation >= 201309L
+#endif
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete[](void* p) TEST_NOEXCEPT
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, std::size_t) TEST_NOEXCEPT
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main(int, char**)
+{
+    A* x = new A[3];
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete [] x;
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(1 == sized_delete_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.dataraces/not_testable.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.dataraces/not_testable.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.dataraces/not_testable.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new.pass.cpp
new file mode 100644
index 0000000..b857b39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test placement new
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+int A_constructed = 0;
+
+struct A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int main(int, char**)
+{
+    char buf[sizeof(A)];
+
+    A* ap = new(buf) A;
+    assert((char*)ap == buf);
+    assert(A_constructed == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array.pass.cpp
new file mode 100644
index 0000000..99a5442
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test placement new array
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+int A_constructed = 0;
+
+struct A
+{
+    A() {++A_constructed;}
+    ~A() {--A_constructed;}
+};
+
+int main(int, char**)
+{
+    const std::size_t Size = 3;
+    // placement new might require additional space.
+    const std::size_t ExtraSize = 64;
+    char buf[Size*sizeof(A) + ExtraSize];
+
+    A* ap = new(buf) A[Size];
+    assert((char*)ap >= buf);
+    assert((char*)ap < (buf + ExtraSize));
+    assert(A_constructed == Size);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array_ptr.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array_ptr.verify.cpp
new file mode 100644
index 0000000..b5ec824
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_array_ptr.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new[](std::size_t, void *);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <new>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    char buffer[100];
+    ::operator new[](4, buffer); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_ptr.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_ptr.verify.cpp
new file mode 100644
index 0000000..5029864
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.placement/new_ptr.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new(std::size_t, void *);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <new>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    char buffer[100];
+    ::operator new(4, buffer); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/delete_align_val_t_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/delete_align_val_t_replace.pass.cpp
new file mode 100644
index 0000000..4814be3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/delete_align_val_t_replace.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test aligned operator delete replacement.
+
+// UNSUPPORTED: sanitizer-new-delete, c++03, c++11, c++14
+
+// Aligned allocation was not provided before macosx10.14 and as a result we
+// get availability errors when the deployment target is older than macosx10.14.
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int aligned_delete_called = 0;
+
+void reset() {
+    unsized_delete_called = 0;
+    unsized_delete_nothrow_called = 0;
+    aligned_delete_called = 0;
+}
+
+alignas(OverAligned) char DummyData[OverAligned * 4];
+
+void* operator new (std::size_t s, std::align_val_t)
+{
+    assert(s <= sizeof(DummyData));
+    return DummyData;
+}
+
+void operator delete(void* p) noexcept
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) noexcept
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void*, std::align_val_t) noexcept
+{
+    ++aligned_delete_called;
+}
+
+struct alignas(OverAligned) A {};
+struct alignas(std::max_align_t) B {};
+
+int main(int, char**)
+{
+    reset();
+    {
+        B *bp = new B;
+        DoNotOptimize(bp);
+        assert(0 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(0 == aligned_delete_called);
+
+        delete bp;
+        DoNotOptimize(bp);
+        assert(1 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(0 == aligned_delete_called);
+    }
+    reset();
+    {
+        A *ap = new A;
+        DoNotOptimize(ap);
+        assert(0 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(0 == aligned_delete_called);
+
+        delete ap;
+        DoNotOptimize(ap);
+        assert(0 == unsized_delete_called);
+        assert(0 == unsized_delete_nothrow_called);
+        assert(1 == aligned_delete_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.pass.cpp
new file mode 100644
index 0000000..448da17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new
+
+// asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+bool A_constructed = false;
+
+struct A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    std::set_new_handler(my_new_handler);
+    try
+    {
+        void* vp = operator new (std::numeric_limits<std::size_t>::max());
+        ((void)vp);
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(new_handler_called == 1);
+    }
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+    A* ap = new A;
+    assert(ap);
+    assert(A_constructed);
+    delete ap;
+    assert(!A_constructed);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t.pass.cpp
new file mode 100644
index 0000000..d662e08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Aligned allocation was not provided before macosx10.13 and as a result we
+// get availability errors when the deployment target is older than macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new
+
+#include <new>
+#include <cstddef>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+bool A_constructed = false;
+
+struct alignas(OverAligned) A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+void test_throw_max_size() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    std::set_new_handler(my_new_handler);
+    try
+    {
+        void* vp = operator new (std::numeric_limits<std::size_t>::max(),
+                                 static_cast<std::align_val_t>(32));
+        ((void)vp);
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(new_handler_called == 1);
+    }
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        A* ap = new A;
+        assert(ap);
+        assert(reinterpret_cast<std::uintptr_t>(ap) % OverAligned == 0);
+        assert(A_constructed);
+        delete ap;
+        assert(!A_constructed);
+    }
+    {
+        test_throw_max_size();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_nothrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_nothrow.pass.cpp
new file mode 100644
index 0000000..cd1b3f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_nothrow.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Aligned allocation was not provided before macosx10.13 and as a result we
+// get availability errors when the deployment target is older than macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new (nothrow)
+
+#include <new>
+#include <cstddef>
+#include <cstdint>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+bool A_constructed = false;
+
+struct alignas(OverAligned) A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+void test_max_alloc() {
+    std::set_new_handler(my_new_handler);
+    auto do_test = []() {
+        void* vp = operator new (std::numeric_limits<std::size_t>::max(),
+                                 std::align_val_t(OverAligned),
+                                 std::nothrow);
+        assert(new_handler_called == 1);
+        assert(vp == 0);
+    };
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        do_test();
+    }
+    catch (...)
+    {
+        assert(false);
+    }
+#else
+    do_test();
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        A* ap = new(std::nothrow) A;
+        assert(ap);
+        assert(reinterpret_cast<std::uintptr_t>(ap) % OverAligned == 0);
+        assert(A_constructed);
+        delete ap;
+        assert(!A_constructed);
+    }
+    {
+        test_max_alloc();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_nothrow_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_nothrow_replace.pass.cpp
new file mode 100644
index 0000000..13e6c52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_nothrow_replace.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: sanitizer-new-delete
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// Aligned allocation was not provided before macosx10.13 and as a result we
+// get availability errors when the deployment target is older than macosx10.13.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new nothrow by replacing only operator new
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+bool A_constructed = false;
+
+struct alignas(OverAligned) A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+bool B_constructed = false;
+
+struct B {
+  std::max_align_t  member;
+  B() { B_constructed = true; }
+  ~B() { B_constructed = false; }
+};
+
+int new_called = 0;
+alignas(OverAligned) char Buff[OverAligned * 2];
+
+void* operator new(std::size_t s, std::align_val_t a) TEST_THROW_SPEC(std::bad_alloc)
+{
+    assert(!new_called);
+    assert(s <= sizeof(Buff));
+    assert(static_cast<std::size_t>(a) == OverAligned);
+    ++new_called;
+    return Buff;
+}
+
+void  operator delete(void* p, std::align_val_t a) TEST_NOEXCEPT
+{
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(p == Buff);
+    assert(static_cast<std::size_t>(a) == OverAligned);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called);
+    --new_called;
+}
+
+
+int main(int, char**)
+{
+    {
+        A* ap = new (std::nothrow) A;
+        assert(ap);
+        assert(A_constructed);
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called);
+        delete ap;
+        assert(!A_constructed);
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+    }
+    {
+        B* bp = new (std::nothrow) B;
+        assert(bp);
+        assert(B_constructed);
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+        delete bp;
+        ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+        assert(!B_constructed);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_replace.pass.cpp
new file mode 100644
index 0000000..330c26a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_align_val_t_replace.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: sanitizer-new-delete
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// test operator new replacement
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cstdint>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+constexpr auto OverAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__ * 2;
+
+bool A_constructed = false;
+
+struct alignas(OverAligned) A {
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+
+bool B_constructed = false;
+
+struct alignas(std::max_align_t) B
+{
+    std::max_align_t member;
+    B() {B_constructed = true;}
+    ~B() {B_constructed = false;}
+};
+
+int new_called = 0;
+
+alignas(OverAligned) char DummyData[OverAligned];
+
+void* operator new(std::size_t s, std::align_val_t a) TEST_THROW_SPEC(std::bad_alloc)
+{
+    assert(new_called == 0); // We already allocated
+    assert(s <= sizeof(DummyData));
+    assert(static_cast<std::size_t>(a) == OverAligned);
+    ++new_called;
+    void *Ret = DummyData;
+    DoNotOptimize(Ret);
+    return Ret;
+}
+
+void  operator delete(void* p, std::align_val_t) TEST_NOEXCEPT
+{
+    assert(new_called == 1);
+    --new_called;
+    assert(p == DummyData);
+    DoNotOptimize(DummyData);
+}
+
+
+int main(int, char**)
+{
+    {
+        A* ap = new A;
+        assert(ap);
+        assert(A_constructed);
+        assert(new_called);
+        delete ap;
+        assert(!A_constructed);
+        assert(!new_called);
+    }
+    {
+        B* bp = new B;
+        assert(bp);
+        assert(B_constructed);
+        assert(!new_called);
+        delete bp;
+        assert(!new_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_nothrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_nothrow.pass.cpp
new file mode 100644
index 0000000..dfdf7d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_nothrow.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new (nothrow)
+
+// asan and msan will not call the new handler.
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_handler_called = 0;
+
+void my_new_handler()
+{
+    ++new_handler_called;
+    std::set_new_handler(0);
+}
+
+bool A_constructed = false;
+
+struct A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+int main(int, char**)
+{
+    std::set_new_handler(my_new_handler);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+#endif
+    {
+        void* vp = operator new (std::numeric_limits<std::size_t>::max(), std::nothrow);
+        assert(new_handler_called == 1);
+        assert(vp == 0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+    A* ap = new(std::nothrow) A;
+    assert(ap);
+    assert(A_constructed);
+    delete ap;
+    assert(!A_constructed);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_nothrow_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_nothrow_replace.pass.cpp
new file mode 100644
index 0000000..d21f8f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_nothrow_replace.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new nothrow by replacing only operator new
+
+// UNSUPPORTED: sanitizer-new-delete
+// XFAIL: libcpp-no-vcruntime
+// XFAIL: LIBCXX-AIX-FIXME
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_called = 0;
+
+void* operator new(std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    ++new_called;
+    void* ret = std::malloc(s);
+    if (!ret) std::abort(); // placate MSVC's unchecked malloc warning
+    return ret;
+}
+
+void  operator delete(void* p) TEST_NOEXCEPT
+{
+    --new_called;
+    std::free(p);
+}
+
+bool A_constructed = false;
+
+struct A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+int main(int, char**)
+{
+    new_called = 0;
+    A *ap = new (std::nothrow) A;
+    DoNotOptimize(ap);
+    assert(ap);
+    assert(A_constructed);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(new_called);
+    delete ap;
+    DoNotOptimize(ap);
+    assert(!A_constructed);
+    ASSERT_WITH_OPERATOR_NEW_FALLBACKS(!new_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_replace.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_replace.pass.cpp
new file mode 100644
index 0000000..807d1fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_replace.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test operator new replacement
+
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int new_called = 0;
+
+void* operator new(std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    ++new_called;
+    void* ret = std::malloc(s);
+    if (!ret) std::abort(); // placate MSVC's unchecked malloc warning
+    return ret;
+}
+
+void  operator delete(void* p) TEST_NOEXCEPT
+{
+    --new_called;
+    std::free(p);
+}
+
+bool A_constructed = false;
+
+struct A
+{
+    A() {A_constructed = true;}
+    ~A() {A_constructed = false;}
+};
+
+int main(int, char**)
+{
+    new_called = 0;
+    A *ap = new A;
+    DoNotOptimize(ap);
+    assert(ap);
+    assert(A_constructed);
+    assert(new_called);
+    delete ap;
+    DoNotOptimize(ap);
+    assert(!A_constructed);
+    assert(!new_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size.verify.cpp
new file mode 100644
index 0000000..ed66078
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size.verify.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new(std::size_t);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <new>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    ::operator new(4); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.verify.cpp
new file mode 100644
index 0000000..2a30e15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new(std::size_t, std::align_val_t);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+
+int main(int, char**) {
+    ::operator new(4, std::align_val_t{4});  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.verify.cpp
new file mode 100644
index 0000000..047e81d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new(std::size_t, std::align_val_t, std::nothrow_t &);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Libcxx when built for z/OS doesn't contain the aligned allocation functions,
+// nor does the dynamic library shipped with z/OS.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+// REQUIRES: -faligned-allocation
+// ADDITIONAL_COMPILE_FLAGS: -faligned-allocation
+
+#include <new>
+
+int main(int, char**) {
+    ::operator new(4, std::align_val_t{4}, std::nothrow);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_nothrow.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_nothrow.verify.cpp
new file mode 100644
index 0000000..4826cb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_nothrow.verify.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// void* operator new(std::size_t, std::nothrow_t &);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <new>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    ::operator new(4, std::nothrow); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete11.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete11.pass.cpp
new file mode 100644
index 0000000..3a904af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete11.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// REQUIRES: c++03 || c++11
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete(void* p) TEST_NOEXCEPT
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void* p, std::size_t) TEST_NOEXCEPT
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+int main(int, char**)
+{
+    int *x = new int(42);
+    DoNotOptimize(x);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete x;
+    DoNotOptimize(x);
+    assert(1 == unsized_delete_called);
+    assert(0 == sized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete14.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete14.pass.cpp
new file mode 100644
index 0000000..a8701ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete14.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete replacement.
+
+// UNSUPPORTED: sanitizer-new-delete, c++03, c++11
+
+// NOTE: Clang does not enable sized-deallocation in C++14 and beyond by
+// default. It is only enabled when -fsized-deallocation is given.
+// XFAIL: clang, apple-clang
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete(void* p) TEST_NOEXCEPT
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void* p, std::size_t) TEST_NOEXCEPT
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+int main(int, char**)
+{
+    int *x = new int(42);
+    DoNotOptimize(x);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete x;
+    DoNotOptimize(x);
+    assert(0 == unsized_delete_called);
+    assert(1 == sized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_calls_unsized_delete.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_calls_unsized_delete.pass.cpp
new file mode 100644
index 0000000..fbc9cf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_calls_unsized_delete.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete calls the unsized operator delete.
+// When sized operator delete is not available (ex C++11) then the unsized
+// operator delete is called directly.
+
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int delete_called = 0;
+int delete_nothrow_called = 0;
+
+void operator delete(void* p) TEST_NOEXCEPT
+{
+    ++delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++delete_nothrow_called;
+    std::free(p);
+}
+
+int main(int, char**)
+{
+    int *x = new int(42);
+    DoNotOptimize(x);
+    assert(0 == delete_called);
+    assert(0 == delete_nothrow_called);
+
+    delete x;
+    DoNotOptimize(x);
+    assert(1 == delete_called);
+    assert(0 == delete_nothrow_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_fsizeddeallocation.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_fsizeddeallocation.pass.cpp
new file mode 100644
index 0000000..826b2a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_fsizeddeallocation.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// UNSUPPORTED: sanitizer-new-delete
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// REQUIRES: -fsized-deallocation
+// ADDITIONAL_COMPILE_FLAGS: -fsized-deallocation, -O3
+
+#if !defined(__cpp_sized_deallocation)
+# error __cpp_sized_deallocation should be defined
+#endif
+
+#if !(__cpp_sized_deallocation >= 201309L)
+# error expected __cpp_sized_deallocation >= 201309L
+#endif
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete(void* p) TEST_NOEXCEPT
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) TEST_NOEXCEPT
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void* p, std::size_t) TEST_NOEXCEPT
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+int main(int, char**)
+{
+    int *x = new int(42);
+    DoNotOptimize(x);
+    assert(0 == sized_delete_called);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+
+    delete x;
+    DoNotOptimize(x);
+    assert(1 == sized_delete_called);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/nothrow_t.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/nothrow_t.fail.cpp
new file mode 100644
index 0000000..5ec2696
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/nothrow_t.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// struct nothrow_t {
+//   explicit nothrow_t() = default;
+// };
+// extern const nothrow_t nothrow;
+
+// This test checks for LWG 2510.
+
+#include <new>
+
+
+std::nothrow_t f() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/nothrow_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/nothrow_t.pass.cpp
new file mode 100644
index 0000000..3a62313
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/nothrow_t.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// struct nothrow_t {
+//   explicit nothrow_t() = default;
+// };
+// extern const nothrow_t nothrow;
+
+#include <new>
+
+
+int main(int, char**) {
+  std::nothrow_t x = std::nothrow;
+  (void)x;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.nodiscard.verify.cpp
new file mode 100644
index 0000000..632ca0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.nodiscard.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// template <class T> constexpr T* launder(T* p) noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORETD: c++17 && !stdlib=libc++
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int *p = nullptr;
+    std::launder(p); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.pass.cpp
new file mode 100644
index 0000000..40aba0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// template <class T> constexpr T* launder(T* p) noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr int gi = 5;
+constexpr float gf = 8.f;
+
+int main(int, char**) {
+    static_assert(std::launder(&gi) == &gi, "" );
+    static_assert(std::launder(&gf) == &gf, "" );
+
+    const int *i = &gi;
+    const float *f = &gf;
+    static_assert(std::is_same<decltype(i), decltype(std::launder(i))>::value, "");
+    static_assert(std::is_same<decltype(f), decltype(std::launder(f))>::value, "");
+
+    assert(std::launder(i) == i);
+    assert(std::launder(f) == f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp
new file mode 100644
index 0000000..2293c6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.dynamic/ptr.launder/launder.types.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <new>
+
+// template <class T> constexpr T* launder(T* p) noexcept;
+// The program is ill-formed if T is a function type or cv void.
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <new>
+#include <cassert>
+
+#include "test_macros.h"
+
+void foo() {}
+
+int main(int, char**)
+{
+    void *p = nullptr;
+    (void) std::launder((               void *) nullptr);
+    (void) std::launder((const          void *) nullptr);
+    (void) std::launder((      volatile void *) nullptr);
+    (void) std::launder((const volatile void *) nullptr);  // expected-error-re@new:* 4 {{{{(static_assert|static assertion)}} failed{{.*}}can't launder cv-void}}
+    // expected-error@new:* 0-4 {{void pointer argument to '__builtin_launder' is not allowed}}
+
+    (void) std::launder(foo);                              // expected-error-re@new:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}can't launder functions}}
+    // expected-error@new:* 0-1 {{function pointer argument to '__builtin_launder' is not allowed}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/bad.exception/bad_exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/bad.exception/bad_exception.pass.cpp
new file mode 100644
index 0000000..b6a8f9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/bad.exception/bad_exception.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test bad_exception
+
+#include <exception>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::bad_exception>::value),
+                 "std::is_base_of<std::exception, std::bad_exception>::value");
+    static_assert(std::is_polymorphic<std::bad_exception>::value,
+                 "std::is_polymorphic<std::bad_exception>::value");
+    std::bad_exception b;
+    std::bad_exception b2 = b;
+    b2 = b;
+    const char* w = b2.what();
+    assert(w);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/assign.pass.cpp
new file mode 100644
index 0000000..c37a622
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/assign.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <exception>
+
+// class nested_exception;
+
+// nested_exception& operator=(const nested_exception&) throw() = default;
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+int main(int, char**)
+{
+    {
+        std::nested_exception e0;
+        std::nested_exception e;
+        e = e0;
+        assert(e.nested_ptr() == nullptr);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try
+        {
+            throw A(2);
+            assert(false);
+        }
+        catch (const A&)
+        {
+            std::nested_exception e0;
+            std::nested_exception e;
+            e = e0;
+            assert(e.nested_ptr() != nullptr);
+            try
+            {
+                std::rethrow_exception(e.nested_ptr());
+                assert(false);
+            }
+            catch (const A& a)
+            {
+                assert(a == A(2));
+            }
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/ctor_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/ctor_copy.pass.cpp
new file mode 100644
index 0000000..e154757
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/ctor_copy.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <exception>
+
+// class nested_exception;
+
+// nested_exception(const nested_exception&) throw() = default;
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+int main(int, char**)
+{
+    {
+        std::nested_exception e0;
+        std::nested_exception e = e0;
+        assert(e.nested_ptr() == nullptr);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try
+        {
+            throw A(2);
+            assert(false);
+        }
+        catch (const A&)
+        {
+            std::nested_exception e0;
+            std::nested_exception e = e0;
+            assert(e.nested_ptr() != nullptr);
+            try
+            {
+                std::rethrow_exception(e.nested_ptr());
+                assert(false);
+            }
+            catch (const A& a)
+            {
+                assert(a == A(2));
+            }
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/ctor_default.pass.cpp
new file mode 100644
index 0000000..abb75e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/ctor_default.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <exception>
+
+// class nested_exception;
+
+// nested_exception() throw();
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+int main(int, char**)
+{
+    {
+        std::nested_exception e;
+        assert(e.nested_ptr() == nullptr);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try
+        {
+            throw A(2);
+            assert(false);
+        }
+        catch (const A&)
+        {
+            std::nested_exception e;
+            assert(e.nested_ptr() != nullptr);
+            try
+            {
+                std::rethrow_exception(e.nested_ptr());
+                assert(false);
+            }
+            catch (const A& a)
+            {
+                assert(a == A(2));
+            }
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/rethrow_if_nested.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/rethrow_if_nested.pass.cpp
new file mode 100644
index 0000000..6d239a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/rethrow_if_nested.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// FIXME: This test fails in MSVC mode due to a stack overflow
+// XFAIL: msvc
+
+// <exception>
+
+// class nested_exception;
+
+// template <class E> void rethrow_if_nested(const E& e);
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+    virtual ~A() TEST_NOEXCEPT {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+class B
+    : public std::nested_exception,
+      public A
+{
+public:
+    explicit B(int data) : A(data) {}
+    B(const B& b) : A(b) {}
+};
+
+class C
+{
+public:
+    virtual ~C() {}
+    C * operator&() const { assert(false); return nullptr; } // should not be called
+};
+
+class D : private std::nested_exception {};
+
+
+class E1 : public std::nested_exception {};
+class E2 : public std::nested_exception {};
+class E : public E1, public E2 {};
+
+int main(int, char**)
+{
+    {
+        try
+        {
+            A a(3);  // not a polymorphic type --> no effect
+            std::rethrow_if_nested(a);
+            assert(true);
+        }
+        catch (...)
+        {
+            assert(false);
+        }
+    }
+    {
+        try
+        {
+            D s;  // inaccessible base class --> no effect
+            std::rethrow_if_nested(s);
+            assert(true);
+        }
+        catch (...)
+        {
+            assert(false);
+        }
+    }
+    {
+        try
+        {
+            E s;  // ambiguous base class --> no effect
+            std::rethrow_if_nested(s);
+            assert(true);
+        }
+        catch (...)
+        {
+            assert(false);
+        }
+    }
+    {
+        try
+        {
+            throw B(5);
+        }
+        catch (const B& b)
+        {
+            try
+            {
+                throw b;
+            }
+            catch (const A& a)
+            {
+                try
+                {
+                    std::rethrow_if_nested(a);
+                    assert(false);
+                }
+                catch (const B& b2)
+                {
+                    assert(b2 == B(5));
+                }
+            }
+        }
+    }
+    {
+        try
+        {
+            std::rethrow_if_nested(C());
+            assert(true);
+        }
+        catch (...)
+        {
+            assert(false);
+        }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/rethrow_nested.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/rethrow_nested.pass.cpp
new file mode 100644
index 0000000..1d9ff1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/rethrow_nested.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <exception>
+
+// class nested_exception;
+
+// void rethrow_nested [[noreturn]] () const;
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+void go_quietly()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+    {
+        try
+        {
+            throw A(2);
+            assert(false);
+        }
+        catch (const A&)
+        {
+            const std::nested_exception e;
+            assert(e.nested_ptr() != nullptr);
+            try
+            {
+                e.rethrow_nested();
+                assert(false);
+            }
+            catch (const A& a)
+            {
+                assert(a == A(2));
+            }
+        }
+    }
+    {
+        try
+        {
+            std::set_terminate(go_quietly);
+            const std::nested_exception e;
+            e.rethrow_nested();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(false);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/throw_with_nested.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/throw_with_nested.pass.cpp
new file mode 100644
index 0000000..6a17d7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/except.nested/throw_with_nested.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <exception>
+
+// class nested_exception;
+
+// template<class T> void throw_with_nested [[noreturn]] (T&& t);
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    explicit A(int data) : data_(data) {}
+
+    friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
+};
+
+class B
+    : public std::nested_exception
+{
+    int data_;
+public:
+    explicit B(int data) : data_(data) {}
+
+    friend bool operator==(const B& x, const B& y) {return x.data_ == y.data_;}
+};
+
+#if TEST_STD_VER > 11
+struct Final final {};
+#endif
+
+int main(int, char**)
+{
+    {
+        try
+        {
+            A a(3);
+            std::throw_with_nested(a);
+            assert(false);
+        }
+        catch (const A& a)
+        {
+            assert(a == A(3));
+        }
+    }
+    {
+        try
+        {
+            A a(4);
+            std::throw_with_nested(a);
+            assert(false);
+        }
+        catch (const std::nested_exception& e)
+        {
+            assert(e.nested_ptr() == nullptr);
+        }
+    }
+    {
+        try
+        {
+            B b(5);
+            std::throw_with_nested(b);
+            assert(false);
+        }
+        catch (const B& b)
+        {
+            assert(b == B(5));
+        }
+    }
+    {
+        try
+        {
+            B b(6);
+            std::throw_with_nested(b);
+            assert(false);
+        }
+        catch (const std::nested_exception& e)
+        {
+            assert(e.nested_ptr() == nullptr);
+            const B& b = dynamic_cast<const B&>(e);
+            assert(b == B(6));
+        }
+    }
+    {
+        try
+        {
+            int i = 7;
+            std::throw_with_nested(i);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 7);
+        }
+    }
+    {
+        try
+        {
+            std::throw_with_nested("String literal");
+            assert(false);
+        }
+        catch (const char *)
+        {
+        }
+    }
+#if TEST_STD_VER > 11
+    {
+        try
+        {
+            std::throw_with_nested(Final());
+            assert(false);
+        }
+        catch (const Final &)
+        {
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/set.terminate/get_terminate.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/set.terminate/get_terminate.pass.cpp
new file mode 100644
index 0000000..debc8b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/set.terminate/get_terminate.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test get_terminate
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+int main(int, char**)
+{
+    std::set_terminate(f1);
+    assert(std::get_terminate() == f1);
+    std::set_terminate(f2);
+    assert(std::get_terminate() == f2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/set.terminate/set_terminate.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/set.terminate/set_terminate.pass.cpp
new file mode 100644
index 0000000..860eddc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/set.terminate/set_terminate.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test set_terminate
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f1() {}
+void f2() {}
+
+int main(int, char**)
+{
+    std::set_terminate(f1);
+    assert(std::set_terminate(f2) == f1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/terminate.handler/terminate_handler.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/terminate.handler/terminate_handler.pass.cpp
new file mode 100644
index 0000000..748e71a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/terminate.handler/terminate_handler.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test terminate_handler
+
+#include <exception>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f() {}
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::terminate_handler, void(*)()>::value), "");
+    std::terminate_handler p = f;
+    assert(p == &f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/terminate/terminate.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/terminate/terminate.pass.cpp
new file mode 100644
index 0000000..f585c77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception.terminate/terminate/terminate.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test terminate
+
+#include <exception>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+void f1()
+{
+    std::exit(0);
+}
+
+int main(int, char**)
+{
+    std::set_terminate(f1);
+    std::terminate();
+    assert(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception/exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception/exception.pass.cpp
new file mode 100644
index 0000000..1a04aca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/exception/exception.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test exception
+
+#include <exception>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_polymorphic<std::exception>::value,
+                 "std::is_polymorphic<std::exception>::value");
+    std::exception b;
+    std::exception b2 = b;
+    b2 = b;
+    const char* w = b2.what();
+    assert(w);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/current_exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/current_exception.pass.cpp
new file mode 100644
index 0000000..7624ea0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/current_exception.pass.cpp
@@ -0,0 +1,277 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FIXME: This test needs to be rewritten for the MSVC exception_ptr semantics
+// which copy the exception each time the exception_ptr is copied.
+// XFAIL: msvc
+
+// UNSUPPORTED: no-exceptions
+// <exception>
+
+// exception_ptr current_exception();
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int constructed;
+
+    A() {++constructed;}
+    ~A() {--constructed;}
+    A(const A&)  {++constructed;}
+};
+
+int A::constructed = 0;
+
+int main(int, char**)
+{
+    {
+        std::exception_ptr p = std::current_exception();
+        assert(p == nullptr);
+    }
+    {
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+    {
+        std::exception_ptr p2;
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            std::exception_ptr p = std::current_exception();
+            assert(A::constructed == 1);
+            assert(p != nullptr);
+            p2 = std::current_exception();
+            assert(A::constructed == 1);
+            assert(p == p2);
+        }
+        assert(A::constructed == 1);
+    }
+    assert(A::constructed == 0);
+    {
+        std::exception_ptr p2;
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (A&)
+        {
+            std::exception_ptr p = std::current_exception();
+            assert(A::constructed == 1);
+            assert(p != nullptr);
+            p2 = std::current_exception();
+            assert(A::constructed == 1);
+            assert(p == p2);
+        }
+        assert(A::constructed == 1);
+    }
+    assert(A::constructed == 0);
+    {
+        std::exception_ptr p2;
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (A)
+        {
+            std::exception_ptr p = std::current_exception();
+            assert(A::constructed == 2);
+            assert(p != nullptr);
+            p2 = std::current_exception();
+            assert(A::constructed == 2);
+            assert(p == p2);
+        }
+        assert(A::constructed == 1);
+    }
+    assert(A::constructed == 0);
+    {
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+            try
+            {
+                assert(A::constructed == 1);
+                throw;
+                assert(false);
+            }
+            catch (...)
+            {
+                assert(A::constructed == 1);
+            }
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+    {
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+            try
+            {
+                std::exception_ptr p = std::current_exception();
+                assert(A::constructed == 1);
+                assert(p != nullptr);
+                throw;
+                assert(false);
+            }
+            catch (...)
+            {
+                assert(A::constructed == 1);
+            }
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+    {
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+            try
+            {
+                assert(A::constructed == 1);
+                throw;
+                assert(false);
+            }
+            catch (...)
+            {
+                std::exception_ptr p = std::current_exception();
+                assert(A::constructed == 1);
+                assert(p != nullptr);
+            }
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+    {
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+            try
+            {
+                assert(A::constructed == 1);
+                throw;
+                assert(false);
+            }
+            catch (...)
+            {
+                assert(A::constructed == 1);
+            }
+            std::exception_ptr p = std::current_exception();
+            assert(A::constructed == 1);
+            assert(p != nullptr);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+    {
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+            try
+            {
+                assert(A::constructed == 1);
+                throw;
+                assert(false);
+            }
+            catch (...)
+            {
+                assert(A::constructed == 1);
+            }
+            assert(A::constructed == 1);
+        }
+        std::exception_ptr p = std::current_exception();
+        assert(A::constructed == 0);
+        assert(p == nullptr);
+    }
+    assert(A::constructed == 0);
+    {
+        std::exception_ptr p;
+        try
+        {
+            assert(A::constructed == 0);
+            throw A();
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::constructed == 1);
+            try
+            {
+                assert(A::constructed == 1);
+                throw;
+                assert(false);
+            }
+            catch (...)
+            {
+                p = std::current_exception();
+                assert(A::constructed == 1);
+            }
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 1);
+        assert(p != nullptr);
+    }
+    assert(A::constructed == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/exception_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/exception_ptr.pass.cpp
new file mode 100644
index 0000000..0aded33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/exception_ptr.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <exception>
+
+// typedef unspecified exception_ptr;
+
+// exception_ptr shall satisfy the requirements of NullablePointer.
+
+#include <exception>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::exception_ptr p;
+    assert(p == nullptr);
+    std::exception_ptr p2 = p;
+    assert(nullptr == p);
+    assert(!p);
+    assert(p2 == p);
+    p2 = p;
+    assert(p2 == p);
+    assert(p2 == nullptr);
+    std::exception_ptr p3 = nullptr;
+    assert(p3 == nullptr);
+    p3 = nullptr;
+    assert(p3 == nullptr);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.pass.cpp
new file mode 100644
index 0000000..e97b15a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <exception>
+
+// template<class E> exception_ptr make_exception_ptr(E e);
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int constructed;
+    int data_;
+
+    A(int data = 0) : data_(data) {++constructed;}
+    ~A() {--constructed;}
+    A(const A& a) : data_(a.data_) {++constructed;}
+};
+
+int A::constructed = 0;
+
+int main(int, char**)
+{
+    {
+        std::exception_ptr p = std::make_exception_ptr(A(5));
+        try
+        {
+            std::rethrow_exception(p);
+            assert(false);
+        }
+        catch (const A& a)
+        {
+#ifndef _LIBCPP_ABI_MICROSOFT
+            assert(A::constructed == 1);
+#else
+            // On Windows exception_ptr copies the exception
+            assert(A::constructed == 2);
+#endif
+            assert(p != nullptr);
+            p = nullptr;
+            assert(p == nullptr);
+            assert(a.data_ == 5);
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/rethrow_exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/rethrow_exception.pass.cpp
new file mode 100644
index 0000000..d109f98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/propagation/rethrow_exception.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <exception>
+
+// void rethrow_exception [[noreturn]] (exception_ptr p);
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int constructed;
+    int data_;
+
+    A(int data = 0) : data_(data) {++constructed;}
+    ~A() {--constructed;}
+    A(const A& a) : data_(a.data_) {++constructed;}
+};
+
+int A::constructed = 0;
+
+int main(int, char**)
+{
+    {
+        std::exception_ptr p;
+        try
+        {
+            throw A(3);
+        }
+        catch (...)
+        {
+            p = std::current_exception();
+        }
+        try
+        {
+            std::rethrow_exception(p);
+            assert(false);
+        }
+        catch (const A& a)
+        {
+#ifndef _LIBCPP_ABI_MICROSOFT
+            assert(A::constructed == 1);
+#else
+            // On Windows the exception_ptr copies the exception
+            assert(A::constructed == 2);
+#endif
+            assert(p != nullptr);
+            p = nullptr;
+            assert(p == nullptr);
+            assert(a.data_ == 3);
+            assert(A::constructed == 1);
+        }
+        assert(A::constructed == 0);
+    }
+    assert(A::constructed == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/uncaught/uncaught_exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/uncaught/uncaught_exception.pass.cpp
new file mode 100644
index 0000000..e368ce1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/uncaught/uncaught_exception.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// test uncaught_exception
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    ~A()
+    {
+        assert(std::uncaught_exception());
+    }
+};
+
+struct B
+{
+    B()
+    {
+        // http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#475
+        assert(!std::uncaught_exception());
+    }
+};
+
+int main(int, char**)
+{
+    try
+    {
+        A a;
+        assert(!std::uncaught_exception());
+        throw B();
+    }
+    catch (...)
+    {
+        assert(!std::uncaught_exception());
+    }
+    assert(!std::uncaught_exception());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.exception/uncaught/uncaught_exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/uncaught/uncaught_exceptions.pass.cpp
new file mode 100644
index 0000000..658c0a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.exception/uncaught/uncaught_exceptions.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// std::uncaught_exceptions() was introduced in the dylib on Mac OS 10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// However, std::uncaught_exceptions() gives the wrong answer in Mac OS 10.12
+// and 10.13, where it only gives 0 or 1. This was fixed later.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{12|13}}
+
+// test uncaught_exceptions
+
+#include <exception>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Uncaught {
+    Uncaught(int depth) : d_(depth) {}
+    ~Uncaught() { assert(std::uncaught_exceptions() == d_); }
+    int d_;
+    };
+
+struct Outer {
+    Outer(int depth) : d_(depth) {}
+    ~Outer() {
+    try {
+        assert(std::uncaught_exceptions() == d_);
+        Uncaught u(d_+1);
+        throw 2;
+    }
+    catch (int) {}
+    }
+    int d_;
+};
+
+int main(int, char**) {
+    assert(std::uncaught_exceptions() == 0);
+    {
+    Outer o(0);
+    }
+
+    assert(std::uncaught_exceptions() == 0);
+    {
+    try {
+        Outer o(1);
+        throw 1;
+        }
+    catch (int) {
+        assert(std::uncaught_exceptions() == 0);
+        }
+    }
+    assert(std::uncaught_exceptions() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/include_cxx03.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/include_cxx03.pass.cpp
new file mode 100644
index 0000000..c4643a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/include_cxx03.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <initializer_list>
+
+// Test that the file can be included in C++03
+
+#include <initializer_list>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.access/access.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.access/access.pass.cpp
new file mode 100644
index 0000000..e6437d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.access/access.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// template<class E> class initializer_list;
+
+// const E* begin() const;
+// const E* end() const;
+// size_t size() const;
+
+#include <initializer_list>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct A
+{
+    A(std::initializer_list<int> il)
+    {
+        const int* b = il.begin();
+        const int* e = il.end();
+        assert(il.size() == 3);
+        assert(static_cast<std::size_t>(e - b) == il.size());
+        assert(*b++ == 3);
+        assert(*b++ == 2);
+        assert(*b++ == 1);
+    }
+};
+
+#if TEST_STD_VER > 11
+struct B
+{
+    constexpr B(std::initializer_list<int> il)
+    {
+        const int* b = il.begin();
+        const int* e = il.end();
+        assert(il.size() == 3);
+        assert(static_cast<std::size_t>(e - b) == il.size());
+        assert(*b++ == 3);
+        assert(*b++ == 2);
+        assert(*b++ == 1);
+    }
+};
+
+#endif // TEST_STD_VER > 11
+
+int main(int, char**)
+{
+    A test1 = {3, 2, 1}; (void)test1;
+#if TEST_STD_VER > 11
+    constexpr B test2 = {3, 2, 1};
+    (void)test2;
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.cons/default.pass.cpp
new file mode 100644
index 0000000..40f28d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.cons/default.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// template<class E> class initializer_list;
+
+// initializer_list();
+
+#include <initializer_list>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    std::initializer_list<A> il;
+    assert(il.size() == 0);
+
+#if TEST_STD_VER > 11
+    constexpr std::initializer_list<A> il2;
+    static_assert(il2.size() == 0, "");
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.range/begin_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.range/begin_end.pass.cpp
new file mode 100644
index 0000000..56bd45b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/support.initlist.range/begin_end.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <initializer_list>
+
+// template<class E> const E* begin(initializer_list<E> il);
+
+#include <initializer_list>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct A
+{
+    A(std::initializer_list<int> il)
+    {
+        const int* b = begin(il);
+        const int* e = end(il);
+        assert(il.size() == 3);
+        assert(static_cast<std::size_t>(e - b) == il.size());
+        assert(*b++ == 3);
+        assert(*b++ == 2);
+        assert(*b++ == 1);
+    }
+};
+
+#if TEST_STD_VER > 11
+struct B
+{
+    constexpr B(std::initializer_list<int> il)
+    {
+        const int* b = begin(il);
+        const int* e = end(il);
+        assert(il.size() == 3);
+        assert(static_cast<std::size_t>(e - b) == il.size());
+        assert(*b++ == 3);
+        assert(*b++ == 2);
+        assert(*b++ == 1);
+    }
+};
+
+#endif // TEST_STD_VER > 11
+
+int main(int, char**)
+{
+    A test1 = {3, 2, 1}; (void)test1;
+#if TEST_STD_VER > 11
+    constexpr B test2 = {3, 2, 1};
+    (void)test2;
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/types.pass.cpp
new file mode 100644
index 0000000..5a5d669
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.initlist/types.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// template<class E>
+// class initializer_list
+// {
+// public:
+//     typedef E        value_type;
+//     typedef const E& reference;
+//     typedef const E& const_reference;
+//     typedef size_t   size_type;
+//
+//     typedef const E* iterator;
+//     typedef const E* const_iterator;
+
+#include <initializer_list>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::initializer_list<A>::value_type, A>::value), "");
+    static_assert((std::is_same<std::initializer_list<A>::reference, const A&>::value), "");
+    static_assert((std::is_same<std::initializer_list<A>::const_reference, const A&>::value), "");
+    static_assert((std::is_same<std::initializer_list<A>::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<std::initializer_list<A>::iterator, const A*>::value), "");
+    static_assert((std::is_same<std::initializer_list<A>::const_iterator, const A*>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp
new file mode 100644
index 0000000..4d1a290
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/c.limits/cfloat.pass.cpp
@@ -0,0 +1,185 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cfloat>
+
+#include <cfloat>
+
+#include "test_macros.h"
+
+#ifndef FLT_ROUNDS
+#error FLT_ROUNDS not defined
+#endif
+
+#ifndef FLT_EVAL_METHOD
+#error FLT_EVAL_METHOD not defined
+#endif
+
+#ifndef FLT_RADIX
+#error FLT_RADIX not defined
+#endif
+
+#if TEST_STD_VER > 14
+#ifndef FLT_HAS_SUBNORM
+#error FLT_HAS_SUBNORM not defined
+#endif
+
+#ifndef DBL_HAS_SUBNORM
+#error DBL_HAS_SUBNORM not defined
+#endif
+
+#ifndef LDBL_HAS_SUBNORM
+#error LDBL_HAS_SUBNORM not defined
+#endif
+#endif
+
+#ifndef FLT_MANT_DIG
+#error FLT_MANT_DIG not defined
+#endif
+
+#ifndef DBL_MANT_DIG
+#error DBL_MANT_DIG not defined
+#endif
+
+#ifndef LDBL_MANT_DIG
+#error LDBL_MANT_DIG not defined
+#endif
+
+#ifndef DECIMAL_DIG
+#error DECIMAL_DIG not defined
+#endif
+
+#if TEST_STD_VER > 14
+#ifndef FLT_DECIMAL_DIG
+#error FLT_DECIMAL_DIG not defined
+#endif
+
+#ifndef DBL_DECIMAL_DIG
+#error DBL_DECIMAL_DIG not defined
+#endif
+
+#ifndef LDBL_DECIMAL_DIG
+#error LDBL_DECIMAL_DIG not defined
+#endif
+#endif
+
+#ifndef FLT_DIG
+#error FLT_DIG not defined
+#endif
+
+#ifndef DBL_DIG
+#error DBL_DIG not defined
+#endif
+
+#ifndef LDBL_DIG
+#error LDBL_DIG not defined
+#endif
+
+#ifndef FLT_MIN_EXP
+#error FLT_MIN_EXP not defined
+#endif
+
+#ifndef DBL_MIN_EXP
+#error DBL_MIN_EXP not defined
+#endif
+
+#ifndef LDBL_MIN_EXP
+#error LDBL_MIN_EXP not defined
+#endif
+
+#ifndef FLT_MIN_10_EXP
+#error FLT_MIN_10_EXP not defined
+#endif
+
+#ifndef DBL_MIN_10_EXP
+#error DBL_MIN_10_EXP not defined
+#endif
+
+#ifndef LDBL_MIN_10_EXP
+#error LDBL_MIN_10_EXP not defined
+#endif
+
+#ifndef FLT_MAX_EXP
+#error FLT_MAX_EXP not defined
+#endif
+
+#ifndef DBL_MAX_EXP
+#error DBL_MAX_EXP not defined
+#endif
+
+#ifndef LDBL_MAX_EXP
+#error LDBL_MAX_EXP not defined
+#endif
+
+#ifndef FLT_MAX_10_EXP
+#error FLT_MAX_10_EXP not defined
+#endif
+
+#ifndef DBL_MAX_10_EXP
+#error DBL_MAX_10_EXP not defined
+#endif
+
+#ifndef LDBL_MAX_10_EXP
+#error LDBL_MAX_10_EXP not defined
+#endif
+
+#ifndef FLT_MAX
+#error FLT_MAX not defined
+#endif
+
+#ifndef DBL_MAX
+#error DBL_MAX not defined
+#endif
+
+#ifndef LDBL_MAX
+#error LDBL_MAX not defined
+#endif
+
+#ifndef FLT_EPSILON
+#error FLT_EPSILON not defined
+#endif
+
+#ifndef DBL_EPSILON
+#error DBL_EPSILON not defined
+#endif
+
+#ifndef LDBL_EPSILON
+#error LDBL_EPSILON not defined
+#endif
+
+#ifndef FLT_MIN
+#error FLT_MIN not defined
+#endif
+
+#ifndef DBL_MIN
+#error DBL_MIN not defined
+#endif
+
+#ifndef LDBL_MIN
+#error LDBL_MIN not defined
+#endif
+
+#if TEST_STD_VER > 14
+#ifndef FLT_TRUE_MIN
+#error FLT_TRUE_MIN not defined
+#endif
+
+#ifndef DBL_TRUE_MIN
+#error DBL_TRUE_MIN not defined
+#endif
+
+#ifndef LDBL_TRUE_MIN
+#error LDBL_TRUE_MIN not defined
+#endif
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/c.limits/climits.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/c.limits/climits.pass.cpp
new file mode 100644
index 0000000..75015eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/c.limits/climits.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+ // test climits
+
+#include <climits>
+
+#include "test_macros.h"
+
+#ifndef CHAR_BIT
+#error CHAR_BIT not defined
+#endif
+
+#ifndef SCHAR_MIN
+#error SCHAR_MIN not defined
+#endif
+
+#ifndef SCHAR_MAX
+#error SCHAR_MAX not defined
+#endif
+
+#ifndef UCHAR_MAX
+#error UCHAR_MAX not defined
+#endif
+
+#ifndef CHAR_MIN
+#error CHAR_MIN not defined
+#endif
+
+#ifndef CHAR_MAX
+#error CHAR_MAX not defined
+#endif
+
+#ifndef MB_LEN_MAX
+#error MB_LEN_MAX not defined
+#endif
+
+#ifndef SHRT_MIN
+#error SHRT_MIN not defined
+#endif
+
+#ifndef SHRT_MAX
+#error SHRT_MAX not defined
+#endif
+
+#ifndef USHRT_MAX
+#error USHRT_MAX not defined
+#endif
+
+#ifndef INT_MIN
+#error INT_MIN not defined
+#endif
+
+#ifndef INT_MAX
+#error INT_MAX not defined
+#endif
+
+#ifndef UINT_MAX
+#error UINT_MAX not defined
+#endif
+
+#ifndef LONG_MIN
+#error LONG_MIN not defined
+#endif
+
+#ifndef LONG_MAX
+#error LONG_MAX not defined
+#endif
+
+#ifndef ULONG_MAX
+#error ULONG_MAX not defined
+#endif
+
+#ifndef LLONG_MIN
+#error LLONG_MIN not defined
+#endif
+
+#ifndef LLONG_MAX
+#error LLONG_MAX not defined
+#endif
+
+#ifndef ULLONG_MAX
+#error ULLONG_MAX not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/denorm.style/check_values.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/denorm.style/check_values.pass.cpp
new file mode 100644
index 0000000..484c844
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/denorm.style/check_values.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// float_round_style
+
+#include <limits>
+
+#include "test_macros.h"
+
+typedef char one;
+struct two {one _[2];};
+
+one test(std::float_round_style);
+two test(int);
+
+int main(int, char**)
+{
+    static_assert(std::round_indeterminate == -1,
+                 "std::round_indeterminate == -1");
+    static_assert(std::round_toward_zero == 0,
+                 "std::round_toward_zero == 0");
+    static_assert(std::round_to_nearest == 1,
+                 "std::round_to_nearest == 1");
+    static_assert(std::round_toward_infinity == 2,
+                 "std::round_toward_infinity == 2");
+    static_assert(std::round_toward_neg_infinity == 3,
+                 "std::round_toward_neg_infinity == 3");
+    static_assert(sizeof(test(std::round_to_nearest)) == 1,
+                 "sizeof(test(std::round_to_nearest)) == 1");
+    static_assert(sizeof(test(1)) == 2,
+                 "sizeof(test(1)) == 2");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/is_specialized.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/is_specialized.pass.cpp
new file mode 100644
index 0000000..0c39f9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/is_specialized.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// Specializations shall be provided for each arithmetic type, both floating
+// point and integer, including bool. The member is_specialized shall be
+// true for all such specializations of numeric_limits.
+
+// Non-arithmetic standard types, such as complex<T> (26.3.2), shall not
+// have specializations.
+
+// From [numeric.limits]:
+
+// The value of each member of a specialization of numeric_limits on a cv
+// -qualified type cv T shall be equal to the value of the corresponding
+// member of the specialization on the unqualified type T.
+
+// More convenient to test it here.
+
+#include <limits>
+#include <complex>
+
+#include "type_algorithms.h"
+
+struct Test {
+  template <class T>
+  void operator()() {
+    static_assert(std::numeric_limits<T>::is_specialized,
+                 "std::numeric_limits<T>::is_specialized");
+    static_assert(std::numeric_limits<const T>::is_specialized,
+                 "std::numeric_limits<const T>::is_specialized");
+    static_assert(std::numeric_limits<volatile T>::is_specialized,
+                 "std::numeric_limits<volatile T>::is_specialized");
+    static_assert(std::numeric_limits<const volatile T>::is_specialized,
+                 "std::numeric_limits<const volatile T>::is_specialized");
+  }
+};
+
+int main(int, char**)
+{
+  meta::for_each(meta::arithmetic_types(), Test());
+
+  static_assert(!std::numeric_limits<std::complex<double> >::is_specialized,
+                "!std::numeric_limits<std::complex<double> >::is_specialized");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/const_data_members.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/const_data_members.pass.cpp
new file mode 100644
index 0000000..1d4c268
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/const_data_members.pass.cpp
@@ -0,0 +1,210 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <limits>
+
+#include "test_macros.h"
+
+/*
+<limits>:
+    numeric_limits
+        is_specialized
+        digits
+        digits10
+        max_digits10
+        is_signed
+        is_integer
+        is_exact
+        radix
+        min_exponent
+        min_exponent10
+        max_exponent
+        max_exponent10
+        has_infinity
+        has_quiet_NaN
+        has_signaling_NaN
+        has_denorm
+        has_denorm_loss
+        is_iec559
+        is_bounded
+        is_modulo
+        traps
+        tinyness_before
+        round_style
+*/
+
+template <class T>
+void test(const T &) {}
+
+#define TEST_NUMERIC_LIMITS(type) \
+  test(std::numeric_limits<type>::is_specialized); \
+  test(std::numeric_limits<type>::digits); \
+  test(std::numeric_limits<type>::digits10); \
+  test(std::numeric_limits<type>::max_digits10); \
+  test(std::numeric_limits<type>::is_signed); \
+  test(std::numeric_limits<type>::is_integer); \
+  test(std::numeric_limits<type>::is_exact); \
+  test(std::numeric_limits<type>::radix); \
+  test(std::numeric_limits<type>::min_exponent); \
+  test(std::numeric_limits<type>::min_exponent10); \
+  test(std::numeric_limits<type>::max_exponent); \
+  test(std::numeric_limits<type>::max_exponent10); \
+  test(std::numeric_limits<type>::has_infinity); \
+  test(std::numeric_limits<type>::has_quiet_NaN); \
+  test(std::numeric_limits<type>::has_signaling_NaN); \
+  test(std::numeric_limits<type>::has_denorm); \
+  test(std::numeric_limits<type>::has_denorm_loss); \
+  test(std::numeric_limits<type>::is_iec559); \
+  test(std::numeric_limits<type>::is_bounded); \
+  test(std::numeric_limits<type>::is_modulo); \
+  test(std::numeric_limits<type>::traps); \
+  test(std::numeric_limits<type>::tinyness_before); \
+  test(std::numeric_limits<type>::round_style);
+
+struct other {};
+
+int main(int, char**)
+{
+    // bool
+    TEST_NUMERIC_LIMITS(bool)
+    TEST_NUMERIC_LIMITS(const bool)
+    TEST_NUMERIC_LIMITS(volatile bool)
+    TEST_NUMERIC_LIMITS(const volatile bool)
+
+    // char
+    TEST_NUMERIC_LIMITS(char)
+    TEST_NUMERIC_LIMITS(const char)
+    TEST_NUMERIC_LIMITS(volatile char)
+    TEST_NUMERIC_LIMITS(const volatile char)
+
+    // signed char
+    TEST_NUMERIC_LIMITS(signed char)
+    TEST_NUMERIC_LIMITS(const signed char)
+    TEST_NUMERIC_LIMITS(volatile signed char)
+    TEST_NUMERIC_LIMITS(const volatile signed char)
+
+    // unsigned char
+    TEST_NUMERIC_LIMITS(unsigned char)
+    TEST_NUMERIC_LIMITS(const unsigned char)
+    TEST_NUMERIC_LIMITS(volatile unsigned char)
+    TEST_NUMERIC_LIMITS(const volatile unsigned char)
+
+    // wchar_t
+    TEST_NUMERIC_LIMITS(wchar_t)
+    TEST_NUMERIC_LIMITS(const wchar_t)
+    TEST_NUMERIC_LIMITS(volatile wchar_t)
+    TEST_NUMERIC_LIMITS(const volatile wchar_t)
+
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    // char8_t
+    TEST_NUMERIC_LIMITS(char8_t)
+    TEST_NUMERIC_LIMITS(const char8_t)
+    TEST_NUMERIC_LIMITS(volatile char8_t)
+    TEST_NUMERIC_LIMITS(const volatile char8_t)
+#endif
+
+    // char16_t
+    TEST_NUMERIC_LIMITS(char16_t)
+    TEST_NUMERIC_LIMITS(const char16_t)
+    TEST_NUMERIC_LIMITS(volatile char16_t)
+    TEST_NUMERIC_LIMITS(const volatile char16_t)
+
+    // char32_t
+    TEST_NUMERIC_LIMITS(char32_t)
+    TEST_NUMERIC_LIMITS(const char32_t)
+    TEST_NUMERIC_LIMITS(volatile char32_t)
+    TEST_NUMERIC_LIMITS(const volatile char32_t)
+
+    // short
+    TEST_NUMERIC_LIMITS(short)
+    TEST_NUMERIC_LIMITS(const short)
+    TEST_NUMERIC_LIMITS(volatile short)
+    TEST_NUMERIC_LIMITS(const volatile short)
+
+    // int
+    TEST_NUMERIC_LIMITS(int)
+    TEST_NUMERIC_LIMITS(const int)
+    TEST_NUMERIC_LIMITS(volatile int)
+    TEST_NUMERIC_LIMITS(const volatile int)
+
+    // long
+    TEST_NUMERIC_LIMITS(long)
+    TEST_NUMERIC_LIMITS(const long)
+    TEST_NUMERIC_LIMITS(volatile long)
+    TEST_NUMERIC_LIMITS(const volatile long)
+
+#ifndef TEST_HAS_NO_INT128
+    TEST_NUMERIC_LIMITS(__int128_t)
+    TEST_NUMERIC_LIMITS(const __int128_t)
+    TEST_NUMERIC_LIMITS(volatile __int128_t)
+    TEST_NUMERIC_LIMITS(const volatile __int128_t)
+#endif
+
+    // long long
+    TEST_NUMERIC_LIMITS(long long)
+    TEST_NUMERIC_LIMITS(const long long)
+    TEST_NUMERIC_LIMITS(volatile long long)
+    TEST_NUMERIC_LIMITS(const volatile long long)
+
+    // unsigned short
+    TEST_NUMERIC_LIMITS(unsigned short)
+    TEST_NUMERIC_LIMITS(const unsigned short)
+    TEST_NUMERIC_LIMITS(volatile unsigned short)
+    TEST_NUMERIC_LIMITS(const volatile unsigned short)
+
+    // unsigned int
+    TEST_NUMERIC_LIMITS(unsigned int)
+    TEST_NUMERIC_LIMITS(const unsigned int)
+    TEST_NUMERIC_LIMITS(volatile unsigned int)
+    TEST_NUMERIC_LIMITS(const volatile unsigned int)
+
+    // unsigned long
+    TEST_NUMERIC_LIMITS(unsigned long)
+    TEST_NUMERIC_LIMITS(const unsigned long)
+    TEST_NUMERIC_LIMITS(volatile unsigned long)
+    TEST_NUMERIC_LIMITS(const volatile unsigned long)
+
+    // unsigned long long
+    TEST_NUMERIC_LIMITS(unsigned long long)
+    TEST_NUMERIC_LIMITS(const unsigned long long)
+    TEST_NUMERIC_LIMITS(volatile unsigned long long)
+    TEST_NUMERIC_LIMITS(const volatile unsigned long long)
+
+#ifndef TEST_HAS_NO_INT128
+    TEST_NUMERIC_LIMITS(__uint128_t)
+    TEST_NUMERIC_LIMITS(const __uint128_t)
+    TEST_NUMERIC_LIMITS(volatile __uint128_t)
+    TEST_NUMERIC_LIMITS(const volatile __uint128_t)
+#endif
+
+    // float
+    TEST_NUMERIC_LIMITS(float)
+    TEST_NUMERIC_LIMITS(const float)
+    TEST_NUMERIC_LIMITS(volatile float)
+    TEST_NUMERIC_LIMITS(const volatile float)
+
+    // double
+    TEST_NUMERIC_LIMITS(double)
+    TEST_NUMERIC_LIMITS(const double)
+    TEST_NUMERIC_LIMITS(volatile double)
+    TEST_NUMERIC_LIMITS(const volatile double)
+
+    // long double
+    TEST_NUMERIC_LIMITS(long double)
+    TEST_NUMERIC_LIMITS(const long double)
+    TEST_NUMERIC_LIMITS(volatile long double)
+    TEST_NUMERIC_LIMITS(const volatile long double)
+
+    // other
+    TEST_NUMERIC_LIMITS(other)
+    TEST_NUMERIC_LIMITS(const other)
+    TEST_NUMERIC_LIMITS(volatile other)
+    TEST_NUMERIC_LIMITS(const volatile other)
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/denorm_min.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/denorm_min.pass.cpp
new file mode 100644
index 0000000..3fb4074
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/denorm_min.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// denorm_min()
+
+#include <limits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::denorm_min() == expected);
+    assert(std::numeric_limits<const T>::denorm_min() == expected);
+    assert(std::numeric_limits<volatile T>::denorm_min() == expected);
+    assert(std::numeric_limits<const volatile T>::denorm_min() == expected);
+}
+
+int main(int, char**)
+{
+    test<bool>(false);
+    test<char>(0);
+    test<signed char>(0);
+    test<unsigned char>(0);
+    test<wchar_t>(0);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(0);
+#endif
+    test<char16_t>(0);
+    test<char32_t>(0);
+    test<short>(0);
+    test<unsigned short>(0);
+    test<int>(0);
+    test<unsigned int>(0);
+    test<long>(0);
+    test<unsigned long>(0);
+    test<long long>(0);
+    test<unsigned long long>(0);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(0);
+    test<__uint128_t>(0);
+#endif
+#if defined(__FLT_DENORM_MIN__) // guarded because these macros are extensions.
+    test<float>(__FLT_DENORM_MIN__);
+    test<double>(__DBL_DENORM_MIN__);
+    test<long double>(__LDBL_DENORM_MIN__);
+#endif
+#if defined(FLT_TRUE_MIN) // not currently provided on linux.
+    test<float>(FLT_TRUE_MIN);
+    test<double>(DBL_TRUE_MIN);
+    test<long double>(LDBL_TRUE_MIN);
+#endif
+#if !defined(__FLT_DENORM_MIN__) && !defined(FLT_TRUE_MIN)
+#error Test has no expected values for floating point types
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits.pass.cpp
new file mode 100644
index 0000000..4608a3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// digits
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::digits == expected, "digits test 1");
+    static_assert(std::numeric_limits<const T>::digits == expected, "digits test 2");
+    static_assert(std::numeric_limits<volatile T>::digits == expected, "digits test 3");
+    static_assert(std::numeric_limits<const volatile T>::digits == expected, "digits test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 1>();
+    test<char, std::numeric_limits<char>::is_signed ? 7 : 8>();
+    test<signed char, 7>();
+    test<unsigned char, 8>();
+    test<wchar_t, std::numeric_limits<wchar_t>::is_signed ? sizeof(wchar_t)*8-1 : sizeof(wchar_t)*8>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 8>();
+#endif
+    test<char16_t, 16>();
+    test<char32_t, 32>();
+    test<short, 15>();
+    test<unsigned short, 16>();
+    test<int, 31>();
+    test<unsigned int, 32>();
+    test<long, sizeof(long) == 4 ? 31 : 63>();
+    test<unsigned long, sizeof(long) == 4 ? 32 : 64>();
+    test<long long, 63>();
+    test<unsigned long long, 64>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 127>();
+    test<__uint128_t, 128>();
+#endif
+    test<float, FLT_MANT_DIG>();
+    test<double, DBL_MANT_DIG>();
+    test<long double, LDBL_MANT_DIG>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits10.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits10.pass.cpp
new file mode 100644
index 0000000..41f134a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/digits10.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// digits10
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::digits10 == expected, "digits10 test 1");
+    static_assert(std::numeric_limits<T>::is_bounded, "digits10 test 5");
+    static_assert(std::numeric_limits<const T>::digits10 == expected, "digits10 test 2");
+    static_assert(std::numeric_limits<const T>::is_bounded, "digits10 test 6");
+    static_assert(std::numeric_limits<volatile T>::digits10 == expected, "digits10 test 3");
+    static_assert(std::numeric_limits<volatile T>::is_bounded, "digits10 test 7");
+    static_assert(std::numeric_limits<const volatile T>::digits10 == expected, "digits10 test 4");
+    static_assert(std::numeric_limits<const volatile T>::is_bounded, "digits10 test 8");
+}
+
+int main(int, char**)
+{
+    test<bool, 0>();
+    test<char, 2>();
+    test<signed char, 2>();
+    test<unsigned char, 2>();
+    test<wchar_t, 5*sizeof(wchar_t)/2-1>();  // 4 -> 9 and 2 -> 4
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 2>();
+#endif
+    test<char16_t, 4>();
+    test<char32_t, 9>();
+    test<short, 4>();
+    test<unsigned short, 4>();
+    test<int, 9>();
+    test<unsigned int, 9>();
+    test<long, sizeof(long) == 4 ? 9 : 18>();
+    test<unsigned long, sizeof(long) == 4 ? 9 : 19>();
+    test<long long, 18>();
+    test<unsigned long long, 19>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 38>();
+    test<__uint128_t, 38>();
+#endif
+    test<float, FLT_DIG>();
+    test<double, DBL_DIG>();
+    test<long double, LDBL_DIG>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/epsilon.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/epsilon.pass.cpp
new file mode 100644
index 0000000..d5f3bb0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/epsilon.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// epsilon()
+
+#include <limits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::epsilon() == expected);
+    assert(std::numeric_limits<const T>::epsilon() == expected);
+    assert(std::numeric_limits<volatile T>::epsilon() == expected);
+    assert(std::numeric_limits<const volatile T>::epsilon() == expected);
+}
+
+int main(int, char**)
+{
+    test<bool>(false);
+    test<char>(0);
+    test<signed char>(0);
+    test<unsigned char>(0);
+    test<wchar_t>(0);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(0);
+#endif
+    test<char16_t>(0);
+    test<char32_t>(0);
+    test<short>(0);
+    test<unsigned short>(0);
+    test<int>(0);
+    test<unsigned int>(0);
+    test<long>(0);
+    test<unsigned long>(0);
+    test<long long>(0);
+    test<unsigned long long>(0);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(0);
+    test<__uint128_t>(0);
+#endif
+    test<float>(FLT_EPSILON);
+    test<double>(DBL_EPSILON);
+    test<long double>(LDBL_EPSILON);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_denorm.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_denorm.pass.cpp
new file mode 100644
index 0000000..7ca5a3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_denorm.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// has_denorm
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, std::float_denorm_style expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::has_denorm == expected, "has_denorm test 1");
+    static_assert(std::numeric_limits<const T>::has_denorm == expected, "has_denorm test 2");
+    static_assert(std::numeric_limits<volatile T>::has_denorm == expected, "has_denorm test 3");
+    static_assert(std::numeric_limits<const volatile T>::has_denorm == expected, "has_denorm test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, std::denorm_absent>();
+    test<char, std::denorm_absent>();
+    test<signed char, std::denorm_absent>();
+    test<unsigned char, std::denorm_absent>();
+    test<wchar_t, std::denorm_absent>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, std::denorm_absent>();
+#endif
+    test<char16_t, std::denorm_absent>();
+    test<char32_t, std::denorm_absent>();
+    test<short, std::denorm_absent>();
+    test<unsigned short, std::denorm_absent>();
+    test<int, std::denorm_absent>();
+    test<unsigned int, std::denorm_absent>();
+    test<long, std::denorm_absent>();
+    test<unsigned long, std::denorm_absent>();
+    test<long long, std::denorm_absent>();
+    test<unsigned long long, std::denorm_absent>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, std::denorm_absent>();
+    test<__uint128_t, std::denorm_absent>();
+#endif
+    test<float, std::denorm_present>();
+    test<double, std::denorm_present>();
+    test<long double, std::denorm_present>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_denorm_loss.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_denorm_loss.pass.cpp
new file mode 100644
index 0000000..7b88f3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_denorm_loss.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// has_denorm_loss
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::has_denorm_loss == expected, "has_denorm_loss test 1");
+    static_assert(std::numeric_limits<const T>::has_denorm_loss == expected, "has_denorm_loss test 2");
+    static_assert(std::numeric_limits<volatile T>::has_denorm_loss == expected, "has_denorm_loss test 3");
+    static_assert(std::numeric_limits<const volatile T>::has_denorm_loss == expected, "has_denorm_loss test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, false>();
+    test<signed char, false>();
+    test<unsigned char, false>();
+    test<wchar_t, false>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, false>();
+    test<unsigned short, false>();
+    test<int, false>();
+    test<unsigned int, false>();
+    test<long, false>();
+    test<unsigned long, false>();
+    test<long long, false>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, false>();
+#endif
+    test<float, false>();
+    test<double, false>();
+    test<long double, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_infinity.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_infinity.pass.cpp
new file mode 100644
index 0000000..660953e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_infinity.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// has_infinity
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::has_infinity == expected, "has_infinity test 1");
+    static_assert(std::numeric_limits<const T>::has_infinity == expected, "has_infinity test 2");
+    static_assert(std::numeric_limits<volatile T>::has_infinity == expected, "has_infinity test 3");
+    static_assert(std::numeric_limits<const volatile T>::has_infinity == expected, "has_infinity test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, false>();
+    test<signed char, false>();
+    test<unsigned char, false>();
+    test<wchar_t, false>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, false>();
+    test<unsigned short, false>();
+    test<int, false>();
+    test<unsigned int, false>();
+    test<long, false>();
+    test<unsigned long, false>();
+    test<long long, false>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, false>();
+#endif
+    test<float, true>();
+    test<double, true>();
+    test<long double, true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_quiet_NaN.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_quiet_NaN.pass.cpp
new file mode 100644
index 0000000..5a81863
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_quiet_NaN.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// has_quiet_NaN
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::has_quiet_NaN == expected, "has_quiet_NaN test 1");
+    static_assert(std::numeric_limits<const T>::has_quiet_NaN == expected, "has_quiet_NaN test 2");
+    static_assert(std::numeric_limits<volatile T>::has_quiet_NaN == expected, "has_quiet_NaN test 3");
+    static_assert(std::numeric_limits<const volatile T>::has_quiet_NaN == expected, "has_quiet_NaN test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, false>();
+    test<signed char, false>();
+    test<unsigned char, false>();
+    test<wchar_t, false>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, false>();
+    test<unsigned short, false>();
+    test<int, false>();
+    test<unsigned int, false>();
+    test<long, false>();
+    test<unsigned long, false>();
+    test<long long, false>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, false>();
+#endif
+    test<float, true>();
+    test<double, true>();
+    test<long double, true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_signaling_NaN.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_signaling_NaN.pass.cpp
new file mode 100644
index 0000000..ac4099e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/has_signaling_NaN.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// has_signaling_NaN
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::has_signaling_NaN == expected, "has_signaling_NaN test 1");
+    static_assert(std::numeric_limits<const T>::has_signaling_NaN == expected, "has_signaling_NaN test 2");
+    static_assert(std::numeric_limits<volatile T>::has_signaling_NaN == expected, "has_signaling_NaN test 3");
+    static_assert(std::numeric_limits<const volatile T>::has_signaling_NaN == expected, "has_signaling_NaN test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, false>();
+    test<signed char, false>();
+    test<unsigned char, false>();
+    test<wchar_t, false>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, false>();
+    test<unsigned short, false>();
+    test<int, false>();
+    test<unsigned int, false>();
+    test<long, false>();
+    test<unsigned long, false>();
+    test<long long, false>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, false>();
+#endif
+    test<float, true>();
+    test<double, true>();
+    test<long double, true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/infinity.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/infinity.pass.cpp
new file mode 100644
index 0000000..93c6765
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/infinity.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// infinity()
+
+#include <limits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::infinity() == expected);
+    assert(std::numeric_limits<const T>::infinity() == expected);
+    assert(std::numeric_limits<volatile T>::infinity() == expected);
+    assert(std::numeric_limits<const volatile T>::infinity() == expected);
+}
+
+extern float zero;
+
+int main(int, char**)
+{
+    test<bool>(false);
+    test<char>(0);
+    test<signed char>(0);
+    test<unsigned char>(0);
+    test<wchar_t>(0);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(0);
+#endif
+    test<char16_t>(0);
+    test<char32_t>(0);
+    test<short>(0);
+    test<unsigned short>(0);
+    test<int>(0);
+    test<unsigned int>(0);
+    test<long>(0);
+    test<unsigned long>(0);
+    test<long long>(0);
+    test<unsigned long long>(0);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(0);
+    test<__uint128_t>(0);
+#endif
+    test<float>(1.f/zero);
+    test<double>(1./zero);
+    test<long double>(1./zero);
+
+  return 0;
+}
+
+float zero = 0;
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_bounded.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_bounded.pass.cpp
new file mode 100644
index 0000000..ebbd8cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_bounded.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// is_bounded
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::is_bounded == expected, "is_bounded test 1");
+    static_assert(std::numeric_limits<const T>::is_bounded == expected, "is_bounded test 2");
+    static_assert(std::numeric_limits<volatile T>::is_bounded == expected, "is_bounded test 3");
+    static_assert(std::numeric_limits<const volatile T>::is_bounded == expected, "is_bounded test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, true>();
+    test<char, true>();
+    test<signed char, true>();
+    test<unsigned char, true>();
+    test<wchar_t, true>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, true>();
+#endif
+    test<char16_t, true>();
+    test<char32_t, true>();
+    test<short, true>();
+    test<unsigned short, true>();
+    test<int, true>();
+    test<unsigned int, true>();
+    test<long, true>();
+    test<unsigned long, true>();
+    test<long long, true>();
+    test<unsigned long long, true>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, true>();
+    test<__uint128_t, true>();
+#endif
+    test<float, true>();
+    test<double, true>();
+    test<long double, true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_exact.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_exact.pass.cpp
new file mode 100644
index 0000000..b48cb78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_exact.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// is_exact
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::is_exact == expected, "is_exact test 1");
+    static_assert(std::numeric_limits<const T>::is_exact == expected, "is_exact test 2");
+    static_assert(std::numeric_limits<volatile T>::is_exact == expected, "is_exact test 3");
+    static_assert(std::numeric_limits<const volatile T>::is_exact == expected, "is_exact test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, true>();
+    test<char, true>();
+    test<signed char, true>();
+    test<unsigned char, true>();
+    test<wchar_t, true>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, true>();
+#endif
+    test<char16_t, true>();
+    test<char32_t, true>();
+    test<short, true>();
+    test<unsigned short, true>();
+    test<int, true>();
+    test<unsigned int, true>();
+    test<long, true>();
+    test<unsigned long, true>();
+    test<long long, true>();
+    test<unsigned long long, true>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, true>();
+    test<__uint128_t, true>();
+#endif
+    test<float, false>();
+    test<double, false>();
+    test<long double, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp
new file mode 100644
index 0000000..4fb19fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// is_iec559
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::is_iec559 == expected, "is_iec559 test 1");
+    static_assert(std::numeric_limits<const T>::is_iec559 == expected, "is_iec559 test 2");
+    static_assert(std::numeric_limits<volatile T>::is_iec559 == expected, "is_iec559 test 3");
+    static_assert(std::numeric_limits<const volatile T>::is_iec559 == expected, "is_iec559 test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, false>();
+    test<signed char, false>();
+    test<unsigned char, false>();
+    test<wchar_t, false>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, false>();
+    test<unsigned short, false>();
+    test<int, false>();
+    test<unsigned int, false>();
+    test<long, false>();
+    test<unsigned long, false>();
+    test<long long, false>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, false>();
+#endif
+    test<float, true>();
+    test<double, true>();
+#if defined(__powerpc__) && defined(__LONG_DOUBLE_IBM128__)
+    test<long double, false>();
+#else
+    test<long double, true>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_integer.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_integer.pass.cpp
new file mode 100644
index 0000000..d2763a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_integer.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// is_integer
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::is_integer == expected, "is_integer test 1");
+    static_assert(std::numeric_limits<const T>::is_integer == expected, "is_integer test 2");
+    static_assert(std::numeric_limits<volatile T>::is_integer == expected, "is_integer test 3");
+    static_assert(std::numeric_limits<const volatile T>::is_integer == expected, "is_integer test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, true>();
+    test<char, true>();
+    test<signed char, true>();
+    test<unsigned char, true>();
+    test<wchar_t, true>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, true>();
+#endif
+    test<char16_t, true>();
+    test<char32_t, true>();
+    test<short, true>();
+    test<unsigned short, true>();
+    test<int, true>();
+    test<unsigned int, true>();
+    test<long, true>();
+    test<unsigned long, true>();
+    test<long long, true>();
+    test<unsigned long long, true>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, true>();
+    test<__uint128_t, true>();
+#endif
+    test<float, false>();
+    test<double, false>();
+    test<long double, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_modulo.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_modulo.pass.cpp
new file mode 100644
index 0000000..962f54c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_modulo.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// is_modulo
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::is_modulo == expected, "is_modulo test 1");
+    static_assert(std::numeric_limits<const T>::is_modulo == expected, "is_modulo test 2");
+    static_assert(std::numeric_limits<volatile T>::is_modulo == expected, "is_modulo test 3");
+    static_assert(std::numeric_limits<const volatile T>::is_modulo == expected, "is_modulo test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+//    test<char, false>(); // don't know
+    test<signed char, false>();
+    test<unsigned char, true>();
+//    test<wchar_t, false>(); // don't know
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, true>();
+#endif
+    test<char16_t, true>();
+    test<char32_t, true>();
+    test<short, false>();
+    test<unsigned short, true>();
+    test<int, false>();
+    test<unsigned int, true>();
+    test<long, false>();
+    test<unsigned long, true>();
+    test<long long, false>();
+    test<unsigned long long, true>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, true>();
+#endif
+    test<float, false>();
+    test<double, false>();
+    test<long double, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_signed.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_signed.pass.cpp
new file mode 100644
index 0000000..5728804
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/is_signed.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// is_signed
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::is_signed == expected, "is_signed test 1");
+    static_assert(std::numeric_limits<const T>::is_signed == expected, "is_signed test 2");
+    static_assert(std::numeric_limits<volatile T>::is_signed == expected, "is_signed test 3");
+    static_assert(std::numeric_limits<const volatile T>::is_signed == expected, "is_signed test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, char(-1) < char(0)>();
+    test<signed char, true>();
+    test<unsigned char, false>();
+    test<wchar_t, wchar_t(-1) < wchar_t(0)>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, true>();
+    test<unsigned short, false>();
+    test<int, true>();
+    test<unsigned int, false>();
+    test<long, true>();
+    test<unsigned long, false>();
+    test<long long, true>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, true>();
+    test<__uint128_t, false>();
+#endif
+    test<float, true>();
+    test<double, true>();
+    test<long double, true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/lowest.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/lowest.pass.cpp
new file mode 100644
index 0000000..db0c0f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/lowest.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// lowest()
+
+#include <limits>
+#include <climits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   include <cwchar>
+#endif
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::lowest() == expected);
+    assert(std::numeric_limits<T>::is_bounded);
+    assert(std::numeric_limits<const T>::lowest() == expected);
+    assert(std::numeric_limits<const T>::is_bounded);
+    assert(std::numeric_limits<volatile T>::lowest() == expected);
+    assert(std::numeric_limits<volatile T>::is_bounded);
+    assert(std::numeric_limits<const volatile T>::lowest() == expected);
+    assert(std::numeric_limits<const volatile T>::is_bounded);
+}
+
+int main(int, char**)
+{
+    test<bool>(false);
+    test<char>(CHAR_MIN);
+    test<signed char>(SCHAR_MIN);
+    test<unsigned char>(0);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(WCHAR_MIN);
+#endif
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(0);
+#endif
+    test<char16_t>(0);
+    test<char32_t>(0);
+    test<short>(SHRT_MIN);
+    test<unsigned short>(0);
+    test<int>(INT_MIN);
+    test<unsigned int>(0);
+    test<long>(LONG_MIN);
+    test<unsigned long>(0);
+    test<long long>(LLONG_MIN);
+    test<unsigned long long>(0);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(-__int128_t(__uint128_t(-1)/2) - 1);
+    test<__uint128_t>(0);
+#endif
+    test<float>(-FLT_MAX);
+    test<double>(-DBL_MAX);
+    test<long double>(-LDBL_MAX);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max.pass.cpp
new file mode 100644
index 0000000..2f7c1f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// max()
+
+#include <limits>
+#include <climits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   include <cwchar>
+#endif
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::max() == expected);
+    assert(std::numeric_limits<T>::is_bounded);
+    assert(std::numeric_limits<const T>::max() == expected);
+    assert(std::numeric_limits<const T>::is_bounded);
+    assert(std::numeric_limits<volatile T>::max() == expected);
+    assert(std::numeric_limits<volatile T>::is_bounded);
+    assert(std::numeric_limits<const volatile T>::max() == expected);
+    assert(std::numeric_limits<const volatile T>::is_bounded);
+}
+
+int main(int, char**)
+{
+    test<bool>(true);
+    test<char>(CHAR_MAX);
+    test<signed char>(SCHAR_MAX);
+    test<unsigned char>(UCHAR_MAX);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(WCHAR_MAX);
+#endif
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(UCHAR_MAX); // ??
+#endif
+    test<char16_t>(USHRT_MAX);
+    test<char32_t>(UINT_MAX);
+    test<short>(SHRT_MAX);
+    test<unsigned short>(USHRT_MAX);
+    test<int>(INT_MAX);
+    test<unsigned int>(UINT_MAX);
+    test<long>(LONG_MAX);
+    test<unsigned long>(ULONG_MAX);
+    test<long long>(LLONG_MAX);
+    test<unsigned long long>(ULLONG_MAX);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(__int128_t(__uint128_t(-1)/2));
+    test<__uint128_t>(__uint128_t(-1));
+#endif
+    test<float>(FLT_MAX);
+    test<double>(DBL_MAX);
+    test<long double>(LDBL_MAX);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_digits10.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_digits10.pass.cpp
new file mode 100644
index 0000000..b29d485
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_digits10.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// max_digits10
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::max_digits10 == expected, "max_digits10 test 1");
+    static_assert(std::numeric_limits<const T>::max_digits10 == expected, "max_digits10 test 2");
+    static_assert(std::numeric_limits<volatile T>::max_digits10 == expected, "max_digits10 test 3");
+    static_assert(std::numeric_limits<const volatile T>::max_digits10 == expected, "max_digits10 test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 0>();
+    test<char, 0>();
+    test<signed char, 0>();
+    test<unsigned char, 0>();
+    test<wchar_t, 0>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 0>();
+#endif
+    test<char16_t, 0>();
+    test<char32_t, 0>();
+    test<short, 0>();
+    test<unsigned short, 0>();
+    test<int, 0>();
+    test<unsigned int, 0>();
+    test<long, 0>();
+    test<unsigned long, 0>();
+    test<long long, 0>();
+    test<unsigned long long, 0>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 0>();
+    test<__uint128_t, 0>();
+#endif
+    test<float, 2+(FLT_MANT_DIG * 30103)/100000>();
+    test<double, 2+(DBL_MANT_DIG * 30103)/100000>();
+    test<long double, 2+(LDBL_MANT_DIG * 30103)/100000>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_exponent.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_exponent.pass.cpp
new file mode 100644
index 0000000..9288eb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_exponent.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// max_exponent
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::max_exponent == expected, "max_exponent test 1");
+    static_assert(std::numeric_limits<const T>::max_exponent == expected, "max_exponent test 2");
+    static_assert(std::numeric_limits<volatile T>::max_exponent == expected, "max_exponent test 3");
+    static_assert(std::numeric_limits<const volatile T>::max_exponent == expected, "max_exponent test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 0>();
+    test<char, 0>();
+    test<signed char, 0>();
+    test<unsigned char, 0>();
+    test<wchar_t, 0>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 0>();
+#endif
+    test<char16_t, 0>();
+    test<char32_t, 0>();
+    test<short, 0>();
+    test<unsigned short, 0>();
+    test<int, 0>();
+    test<unsigned int, 0>();
+    test<long, 0>();
+    test<unsigned long, 0>();
+    test<long long, 0>();
+    test<unsigned long long, 0>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 0>();
+    test<__uint128_t, 0>();
+#endif
+    test<float, FLT_MAX_EXP>();
+    test<double, DBL_MAX_EXP>();
+    test<long double, LDBL_MAX_EXP>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_exponent10.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_exponent10.pass.cpp
new file mode 100644
index 0000000..28ecc86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/max_exponent10.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// max_exponent10
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::max_exponent10 == expected, "max_exponent10 test 1");
+    static_assert(std::numeric_limits<const T>::max_exponent10 == expected, "max_exponent10 test 2");
+    static_assert(std::numeric_limits<volatile T>::max_exponent10 == expected, "max_exponent10 test 3");
+    static_assert(std::numeric_limits<const volatile T>::max_exponent10 == expected, "max_exponent10 test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 0>();
+    test<char, 0>();
+    test<signed char, 0>();
+    test<unsigned char, 0>();
+    test<wchar_t, 0>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 0>();
+#endif
+    test<char16_t, 0>();
+    test<char32_t, 0>();
+    test<short, 0>();
+    test<unsigned short, 0>();
+    test<int, 0>();
+    test<unsigned int, 0>();
+    test<long, 0>();
+    test<unsigned long, 0>();
+    test<long long, 0>();
+    test<unsigned long long, 0>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 0>();
+    test<__uint128_t, 0>();
+#endif
+    test<float, FLT_MAX_10_EXP>();
+    test<double, DBL_MAX_10_EXP>();
+    test<long double, LDBL_MAX_10_EXP>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min.pass.cpp
new file mode 100644
index 0000000..0987736
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// min()
+
+#include <limits>
+#include <climits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   include <cwchar>
+#endif
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::min() == expected);
+    assert(std::numeric_limits<T>::is_bounded || !std::numeric_limits<T>::is_signed);
+    assert(std::numeric_limits<const T>::min() == expected);
+    assert(std::numeric_limits<const T>::is_bounded || !std::numeric_limits<const T>::is_signed);
+    assert(std::numeric_limits<volatile T>::min() == expected);
+    assert(std::numeric_limits<volatile T>::is_bounded || !std::numeric_limits<volatile T>::is_signed);
+    assert(std::numeric_limits<const volatile T>::min() == expected);
+    assert(std::numeric_limits<const volatile T>::is_bounded || !std::numeric_limits<const volatile T>::is_signed);
+}
+
+int main(int, char**)
+{
+    test<bool>(false);
+    test<char>(CHAR_MIN);
+    test<signed char>(SCHAR_MIN);
+    test<unsigned char>(0);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(WCHAR_MIN);
+#endif
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(0);
+#endif
+    test<char16_t>(0);
+    test<char32_t>(0);
+    test<short>(SHRT_MIN);
+    test<unsigned short>(0);
+    test<int>(INT_MIN);
+    test<unsigned int>(0);
+    test<long>(LONG_MIN);
+    test<unsigned long>(0);
+    test<long long>(LLONG_MIN);
+    test<unsigned long long>(0);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(-__int128_t(__uint128_t(-1)/2) - 1);
+    test<__uint128_t>(0);
+#endif
+    test<float>(FLT_MIN);
+    test<double>(DBL_MIN);
+    test<long double>(LDBL_MIN);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min_exponent.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min_exponent.pass.cpp
new file mode 100644
index 0000000..8067248
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min_exponent.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// min_exponent
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::min_exponent == expected, "min_exponent test 1");
+    static_assert(std::numeric_limits<const T>::min_exponent == expected, "min_exponent test 2");
+    static_assert(std::numeric_limits<volatile T>::min_exponent == expected, "min_exponent test 3");
+    static_assert(std::numeric_limits<const volatile T>::min_exponent == expected, "min_exponent test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 0>();
+    test<char, 0>();
+    test<signed char, 0>();
+    test<unsigned char, 0>();
+    test<wchar_t, 0>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 0>();
+#endif
+    test<char16_t, 0>();
+    test<char32_t, 0>();
+    test<short, 0>();
+    test<unsigned short, 0>();
+    test<int, 0>();
+    test<unsigned int, 0>();
+    test<long, 0>();
+    test<unsigned long, 0>();
+    test<long long, 0>();
+    test<unsigned long long, 0>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 0>();
+    test<__uint128_t, 0>();
+#endif
+    test<float, FLT_MIN_EXP>();
+    test<double, DBL_MIN_EXP>();
+    test<long double, LDBL_MIN_EXP>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min_exponent10.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min_exponent10.pass.cpp
new file mode 100644
index 0000000..2f9d8a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/min_exponent10.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// min_exponent10
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::min_exponent10 == expected, "min_exponent10 test 1");
+    static_assert(std::numeric_limits<const T>::min_exponent10 == expected, "min_exponent10 test 2");
+    static_assert(std::numeric_limits<volatile T>::min_exponent10 == expected, "min_exponent10 test 3");
+    static_assert(std::numeric_limits<const volatile T>::min_exponent10 == expected, "min_exponent10 test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 0>();
+    test<char, 0>();
+    test<signed char, 0>();
+    test<unsigned char, 0>();
+    test<wchar_t, 0>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 0>();
+#endif
+    test<char16_t, 0>();
+    test<char32_t, 0>();
+    test<short, 0>();
+    test<unsigned short, 0>();
+    test<int, 0>();
+    test<unsigned int, 0>();
+    test<long, 0>();
+    test<unsigned long, 0>();
+    test<long long, 0>();
+    test<unsigned long long, 0>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 0>();
+    test<__uint128_t, 0>();
+#endif
+    test<float, FLT_MIN_10_EXP>();
+    test<double, DBL_MIN_10_EXP>();
+    test<long double, LDBL_MIN_10_EXP>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/quiet_NaN.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/quiet_NaN.pass.cpp
new file mode 100644
index 0000000..a34b776
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/quiet_NaN.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// quiet_NaN()
+
+#include <limits>
+#include <cmath>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test_imp(std::true_type)
+{
+    assert(std::isnan(std::numeric_limits<T>::quiet_NaN()));
+    assert(std::isnan(std::numeric_limits<const T>::quiet_NaN()));
+    assert(std::isnan(std::numeric_limits<volatile T>::quiet_NaN()));
+    assert(std::isnan(std::numeric_limits<const volatile T>::quiet_NaN()));
+}
+
+template <class T>
+void
+test_imp(std::false_type)
+{
+    assert(std::numeric_limits<T>::quiet_NaN() == T());
+    assert(std::numeric_limits<const T>::quiet_NaN() == T());
+    assert(std::numeric_limits<volatile T>::quiet_NaN() == T());
+    assert(std::numeric_limits<const volatile T>::quiet_NaN() == T());
+}
+
+template <class T>
+inline
+void
+test()
+{
+    test_imp<T>(std::is_floating_point<T>());
+}
+
+int main(int, char**)
+{
+    test<bool>();
+    test<char>();
+    test<signed char>();
+    test<unsigned char>();
+    test<wchar_t>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>();
+#endif
+    test<char16_t>();
+    test<char32_t>();
+    test<short>();
+    test<unsigned short>();
+    test<int>();
+    test<unsigned int>();
+    test<long>();
+    test<unsigned long>();
+    test<long long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>();
+    test<__uint128_t>();
+#endif
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/radix.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/radix.pass.cpp
new file mode 100644
index 0000000..c7e33ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/radix.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// radix
+
+#include <limits>
+#include <cfloat>
+
+#include "test_macros.h"
+
+template <class T, int expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::radix == expected, "radix test 1");
+    static_assert(std::numeric_limits<const T>::radix == expected, "radix test 2");
+    static_assert(std::numeric_limits<volatile T>::radix == expected, "radix test 3");
+    static_assert(std::numeric_limits<const volatile T>::radix == expected, "radix test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, 2>();
+    test<char, 2>();
+    test<signed char, 2>();
+    test<unsigned char, 2>();
+    test<wchar_t, 2>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, 2>();
+#endif
+    test<char16_t, 2>();
+    test<char32_t, 2>();
+    test<short, 2>();
+    test<unsigned short, 2>();
+    test<int, 2>();
+    test<unsigned int, 2>();
+    test<long, 2>();
+    test<unsigned long, 2>();
+    test<long long, 2>();
+    test<unsigned long long, 2>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, 2>();
+    test<__uint128_t, 2>();
+#endif
+    test<float, FLT_RADIX>();
+    test<double, FLT_RADIX>();
+    test<long double, FLT_RADIX>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/round_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/round_error.pass.cpp
new file mode 100644
index 0000000..bf1b13e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/round_error.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// round_error()
+
+#include <limits>
+#include <cfloat>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(T expected)
+{
+    assert(std::numeric_limits<T>::round_error() == expected);
+    assert(std::numeric_limits<const T>::round_error() == expected);
+    assert(std::numeric_limits<volatile T>::round_error() == expected);
+    assert(std::numeric_limits<const volatile T>::round_error() == expected);
+}
+
+int main(int, char**)
+{
+    test<bool>(false);
+    test<char>(0);
+    test<signed char>(0);
+    test<unsigned char>(0);
+    test<wchar_t>(0);
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>(0);
+#endif
+    test<char16_t>(0);
+    test<char32_t>(0);
+    test<short>(0);
+    test<unsigned short>(0);
+    test<int>(0);
+    test<unsigned int>(0);
+    test<long>(0);
+    test<unsigned long>(0);
+    test<long long>(0);
+    test<unsigned long long>(0);
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>(0);
+    test<__uint128_t>(0);
+#endif
+    test<float>(0.5);
+    test<double>(0.5);
+    test<long double>(0.5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/round_style.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/round_style.pass.cpp
new file mode 100644
index 0000000..5b0b745
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/round_style.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// round_style
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, std::float_round_style expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::round_style == expected, "round_style test 1");
+    static_assert(std::numeric_limits<const T>::round_style == expected, "round_style test 2");
+    static_assert(std::numeric_limits<volatile T>::round_style == expected, "round_style test 3");
+    static_assert(std::numeric_limits<const volatile T>::round_style == expected, "round_style test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, std::round_toward_zero>();
+    test<char, std::round_toward_zero>();
+    test<signed char, std::round_toward_zero>();
+    test<unsigned char, std::round_toward_zero>();
+    test<wchar_t, std::round_toward_zero>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, std::round_toward_zero>();
+#endif
+    test<char16_t, std::round_toward_zero>();
+    test<char32_t, std::round_toward_zero>();
+    test<short, std::round_toward_zero>();
+    test<unsigned short, std::round_toward_zero>();
+    test<int, std::round_toward_zero>();
+    test<unsigned int, std::round_toward_zero>();
+    test<long, std::round_toward_zero>();
+    test<unsigned long, std::round_toward_zero>();
+    test<long long, std::round_toward_zero>();
+    test<unsigned long long, std::round_toward_zero>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, std::round_toward_zero>();
+    test<__uint128_t, std::round_toward_zero>();
+#endif
+    test<float, std::round_to_nearest>();
+    test<double, std::round_to_nearest>();
+    test<long double, std::round_to_nearest>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/signaling_NaN.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/signaling_NaN.pass.cpp
new file mode 100644
index 0000000..6c629a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/signaling_NaN.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// signaling_NaN()
+
+#include <limits>
+#include <cmath>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test_imp(std::true_type)
+{
+    assert(std::isnan(std::numeric_limits<T>::signaling_NaN()));
+    assert(std::isnan(std::numeric_limits<const T>::signaling_NaN()));
+    assert(std::isnan(std::numeric_limits<volatile T>::signaling_NaN()));
+    assert(std::isnan(std::numeric_limits<const volatile T>::signaling_NaN()));
+}
+
+template <class T>
+void
+test_imp(std::false_type)
+{
+    assert(std::numeric_limits<T>::signaling_NaN() == T());
+    assert(std::numeric_limits<const T>::signaling_NaN() == T());
+    assert(std::numeric_limits<volatile T>::signaling_NaN() == T());
+    assert(std::numeric_limits<const volatile T>::signaling_NaN() == T());
+}
+
+template <class T>
+inline
+void
+test()
+{
+    test_imp<T>(std::is_floating_point<T>());
+}
+
+int main(int, char**)
+{
+    test<bool>();
+    test<char>();
+    test<signed char>();
+    test<unsigned char>();
+    test<wchar_t>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>();
+#endif
+    test<char16_t>();
+    test<char32_t>();
+    test<short>();
+    test<unsigned short>();
+    test<int>();
+    test<unsigned int>();
+    test<long>();
+    test<unsigned long>();
+    test<long long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>();
+    test<__uint128_t>();
+#endif
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/tinyness_before.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/tinyness_before.pass.cpp
new file mode 100644
index 0000000..9cfc8e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/tinyness_before.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// tinyness_before
+
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::tinyness_before == expected, "tinyness_before test 1");
+    static_assert(std::numeric_limits<const T>::tinyness_before == expected, "tinyness_before test 2");
+    static_assert(std::numeric_limits<volatile T>::tinyness_before == expected, "tinyness_before test 3");
+    static_assert(std::numeric_limits<const volatile T>::tinyness_before == expected, "tinyness_before test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, false>();
+    test<signed char, false>();
+    test<unsigned char, false>();
+    test<wchar_t, false>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, false>();
+#endif
+    test<char16_t, false>();
+    test<char32_t, false>();
+    test<short, false>();
+    test<unsigned short, false>();
+    test<int, false>();
+    test<unsigned int, false>();
+    test<long, false>();
+    test<unsigned long, false>();
+    test<long long, false>();
+    test<unsigned long long, false>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, false>();
+    test<__uint128_t, false>();
+#endif
+#if (defined(__arm__) || defined(__aarch64__))
+    test<float, true>();
+    test<double, true>();
+    test<long double, true>();
+#else
+    test<float, false>();
+    test<double, false>();
+    test<long double, false>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/traps.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/traps.pass.cpp
new file mode 100644
index 0000000..a9b1e44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/traps.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// traps
+
+#include <limits>
+
+#include "test_macros.h"
+
+#if defined(__i386__) || defined(__x86_64__) || defined(__pnacl__) || \
+    defined(__wasm__)
+static const bool integral_types_trap = true;
+#else
+static const bool integral_types_trap = false;
+#endif
+
+template <class T, bool expected>
+void
+test()
+{
+    static_assert(std::numeric_limits<T>::traps == expected, "traps test 1");
+    static_assert(std::numeric_limits<const T>::traps == expected, "traps test 2");
+    static_assert(std::numeric_limits<volatile T>::traps == expected, "traps test 3");
+    static_assert(std::numeric_limits<const volatile T>::traps == expected, "traps test 4");
+}
+
+int main(int, char**)
+{
+    test<bool, false>();
+    test<char, integral_types_trap>();
+    test<signed char, integral_types_trap>();
+    test<unsigned char, integral_types_trap>();
+    test<wchar_t, integral_types_trap>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t, integral_types_trap>();
+#endif
+    test<char16_t, integral_types_trap>();
+    test<char32_t, integral_types_trap>();
+    test<short, integral_types_trap>();
+    test<unsigned short, integral_types_trap>();
+    test<int, integral_types_trap>();
+    test<unsigned int, integral_types_trap>();
+    test<long, integral_types_trap>();
+    test<unsigned long, integral_types_trap>();
+    test<long long, integral_types_trap>();
+    test<unsigned long long, integral_types_trap>();
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t, integral_types_trap>();
+    test<__uint128_t, integral_types_trap>();
+#endif
+    test<float, false>();
+    test<double, false>();
+    test<long double, false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits/default.pass.cpp
new file mode 100644
index 0000000..88ca21f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.limits/default.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// The default numeric_limits<T> template shall have all members, but with
+// 0 or false values.
+
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    A(int i = 0) : data_(i) {}
+    int data_;
+};
+
+bool operator == (const A& x, const A& y) {return x.data_ == y.data_;}
+
+int main(int, char**)
+{
+    static_assert(std::numeric_limits<A>::is_specialized == false,
+                 "std::numeric_limits<A>::is_specialized == false");
+    assert(std::numeric_limits<A>::min() == A());
+    assert(std::numeric_limits<A>::max() == A());
+    assert(std::numeric_limits<A>::lowest() == A());
+    static_assert(std::numeric_limits<A>::digits == 0,
+                 "std::numeric_limits<A>::digits == 0");
+    static_assert(std::numeric_limits<A>::digits10 == 0,
+                 "std::numeric_limits<A>::digits10 == 0");
+    static_assert(std::numeric_limits<A>::max_digits10 == 0,
+                 "std::numeric_limits<A>::max_digits10 == 0");
+    static_assert(std::numeric_limits<A>::is_signed == false,
+                 "std::numeric_limits<A>::is_signed == false");
+    static_assert(std::numeric_limits<A>::is_integer == false,
+                 "std::numeric_limits<A>::is_integer == false");
+    static_assert(std::numeric_limits<A>::is_exact == false,
+                 "std::numeric_limits<A>::is_exact == false");
+    static_assert(std::numeric_limits<A>::radix == 0,
+                 "std::numeric_limits<A>::radix == 0");
+    assert(std::numeric_limits<A>::epsilon() == A());
+    assert(std::numeric_limits<A>::round_error() == A());
+    static_assert(std::numeric_limits<A>::min_exponent == 0,
+                 "std::numeric_limits<A>::min_exponent == 0");
+    static_assert(std::numeric_limits<A>::min_exponent10 == 0,
+                 "std::numeric_limits<A>::min_exponent10 == 0");
+    static_assert(std::numeric_limits<A>::max_exponent == 0,
+                 "std::numeric_limits<A>::max_exponent == 0");
+    static_assert(std::numeric_limits<A>::max_exponent10 == 0,
+                 "std::numeric_limits<A>::max_exponent10 == 0");
+    static_assert(std::numeric_limits<A>::has_infinity == false,
+                 "std::numeric_limits<A>::has_infinity == false");
+    static_assert(std::numeric_limits<A>::has_quiet_NaN == false,
+                 "std::numeric_limits<A>::has_quiet_NaN == false");
+    static_assert(std::numeric_limits<A>::has_signaling_NaN == false,
+                 "std::numeric_limits<A>::has_signaling_NaN == false");
+    static_assert(std::numeric_limits<A>::has_denorm == std::denorm_absent,
+                 "std::numeric_limits<A>::has_denorm == std::denorm_absent");
+    static_assert(std::numeric_limits<A>::has_denorm_loss == false,
+                 "std::numeric_limits<A>::has_denorm_loss == false");
+    assert(std::numeric_limits<A>::infinity() == A());
+    assert(std::numeric_limits<A>::quiet_NaN() == A());
+    assert(std::numeric_limits<A>::signaling_NaN() == A());
+    assert(std::numeric_limits<A>::denorm_min() == A());
+    static_assert(std::numeric_limits<A>::is_iec559 == false,
+                 "std::numeric_limits<A>::is_iec559 == false");
+    static_assert(std::numeric_limits<A>::is_bounded == false,
+                 "std::numeric_limits<A>::is_bounded == false");
+    static_assert(std::numeric_limits<A>::is_modulo == false,
+                 "std::numeric_limits<A>::is_modulo == false");
+    static_assert(std::numeric_limits<A>::traps == false,
+                 "std::numeric_limits<A>::traps == false");
+    static_assert(std::numeric_limits<A>::tinyness_before == false,
+                 "std::numeric_limits<A>::tinyness_before == false");
+    static_assert(std::numeric_limits<A>::round_style == std::round_toward_zero,
+                 "std::numeric_limits<A>::round_style == std::round_toward_zero");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.special/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.special/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/numeric.special/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/round.style/check_values.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/round.style/check_values.pass.cpp
new file mode 100644
index 0000000..bb47763
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/limits/round.style/check_values.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test numeric_limits
+
+// float_denorm_style
+
+#include <limits>
+
+#include "test_macros.h"
+
+typedef char one;
+struct two {one _[2];};
+
+one test(std::float_denorm_style);
+two test(int);
+
+int main(int, char**)
+{
+    static_assert(std::denorm_indeterminate == -1,
+                 "std::denorm_indeterminate == -1");
+    static_assert(std::denorm_absent == 0,
+                 "std::denorm_absent == 0");
+    static_assert(std::denorm_present == 1,
+                 "std::denorm_present == 1");
+    static_assert(sizeof(test(std::denorm_present)) == 1,
+                 "sizeof(test(std::denorm_present)) == 1");
+    static_assert(sizeof(test(1)) == 2,
+                 "sizeof(test(1)) == 2");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.compile.pass.cpp
new file mode 100644
index 0000000..e871065
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.compile.pass.cpp
@@ -0,0 +1,287 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <algorithm>
+
+// Test the feature test macros defined by <algorithm>
+
+/*  Constant                                 Value
+    __cpp_lib_clamp                          201603L [C++17]
+    __cpp_lib_constexpr_algorithms           201806L [C++20]
+    __cpp_lib_parallel_algorithm             201603L [C++17]
+    __cpp_lib_ranges                         202106L [C++20]
+    __cpp_lib_ranges_starts_ends_with        202106L [C++2b]
+    __cpp_lib_robust_nonmodifying_seq_ops    201304L [C++14]
+    __cpp_lib_sample                         201603L [C++17]
+    __cpp_lib_shift                          201806L [C++20]
+*/
+
+#include <algorithm>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_parallel_algorithm
+#   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_sample
+#   error "__cpp_lib_sample should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shift
+#   error "__cpp_lib_shift should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_parallel_algorithm
+#   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++14"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_sample
+#   error "__cpp_lib_sample should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shift
+#   error "__cpp_lib_shift should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should be defined in c++17"
+# endif
+# if __cpp_lib_clamp != 201603L
+#   error "__cpp_lib_clamp should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++17"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++17"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_sample
+#   error "__cpp_lib_sample should be defined in c++17"
+# endif
+# if __cpp_lib_sample != 201603L
+#   error "__cpp_lib_sample should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_shift
+#   error "__cpp_lib_shift should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should be defined in c++20"
+# endif
+# if __cpp_lib_clamp != 201603L
+#   error "__cpp_lib_clamp should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_algorithms != 201806L
+#   error "__cpp_lib_constexpr_algorithms should have the value 201806L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++20"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++20"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++20"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_sample
+#   error "__cpp_lib_sample should be defined in c++20"
+# endif
+# if __cpp_lib_sample != 201603L
+#   error "__cpp_lib_sample should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_shift
+#   error "__cpp_lib_shift should be defined in c++20"
+# endif
+# if __cpp_lib_shift != 201806L
+#   error "__cpp_lib_shift should have the value 201806L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should be defined in c++2b"
+# endif
+# if __cpp_lib_clamp != 201603L
+#   error "__cpp_lib_clamp should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_algorithms != 201806L
+#   error "__cpp_lib_constexpr_algorithms should have the value 201806L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++2b"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_starts_ends_with != 202106L
+#     error "__cpp_lib_ranges_starts_ends_with should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++2b"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_sample
+#   error "__cpp_lib_sample should be defined in c++2b"
+# endif
+# if __cpp_lib_sample != 201603L
+#   error "__cpp_lib_sample should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_shift
+#   error "__cpp_lib_shift should be defined in c++2b"
+# endif
+# if __cpp_lib_shift != 201806L
+#   error "__cpp_lib_shift should have the value 201806L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/any.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/any.version.compile.pass.cpp
new file mode 100644
index 0000000..c4cd218
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/any.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <any>
+
+// Test the feature test macros defined by <any>
+
+/*  Constant         Value
+    __cpp_lib_any    201606L [C++17]
+*/
+
+#include <any>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_any
+#   error "__cpp_lib_any should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_any
+#   error "__cpp_lib_any should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_any
+#   error "__cpp_lib_any should be defined in c++17"
+# endif
+# if __cpp_lib_any != 201606L
+#   error "__cpp_lib_any should have the value 201606L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_any
+#   error "__cpp_lib_any should be defined in c++20"
+# endif
+# if __cpp_lib_any != 201606L
+#   error "__cpp_lib_any should have the value 201606L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_any
+#   error "__cpp_lib_any should be defined in c++2b"
+# endif
+# if __cpp_lib_any != 201606L
+#   error "__cpp_lib_any should have the value 201606L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/array.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/array.version.compile.pass.cpp
new file mode 100644
index 0000000..bd091cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/array.version.compile.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <array>
+
+// Test the feature test macros defined by <array>
+
+/*  Constant                                Value
+    __cpp_lib_array_constexpr               201603L [C++17]
+                                            201811L [C++20]
+    __cpp_lib_nonmember_container_access    201411L [C++17]
+    __cpp_lib_to_array                      201907L [C++20]
+*/
+
+#include <array>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++17"
+# endif
+# if __cpp_lib_array_constexpr != 201603L
+#   error "__cpp_lib_array_constexpr should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++20"
+# endif
+# if __cpp_lib_array_constexpr != 201811L
+#   error "__cpp_lib_array_constexpr should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should be defined in c++20"
+# endif
+# if __cpp_lib_to_array != 201907L
+#   error "__cpp_lib_to_array should have the value 201907L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++2b"
+# endif
+# if __cpp_lib_array_constexpr != 201811L
+#   error "__cpp_lib_array_constexpr should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should be defined in c++2b"
+# endif
+# if __cpp_lib_to_array != 201907L
+#   error "__cpp_lib_to_array should have the value 201907L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/atomic.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/atomic.version.compile.pass.cpp
new file mode 100644
index 0000000..198fe9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/atomic.version.compile.pass.cpp
@@ -0,0 +1,341 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <atomic>
+
+// Test the feature test macros defined by <atomic>
+
+/*  Constant                                   Value
+    __cpp_lib_atomic_flag_test                 201907L [C++20]
+    __cpp_lib_atomic_float                     201711L [C++20]
+    __cpp_lib_atomic_is_always_lock_free       201603L [C++17]
+    __cpp_lib_atomic_lock_free_type_aliases    201907L [C++20]
+    __cpp_lib_atomic_ref                       201806L [C++20]
+    __cpp_lib_atomic_shared_ptr                201711L [C++20]
+    __cpp_lib_atomic_value_initialization      201911L [C++20]
+    __cpp_lib_atomic_wait                      201907L [C++20]
+    __cpp_lib_char8_t                          201907L [C++20]
+*/
+
+#include <atomic>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_float
+#   error "__cpp_lib_atomic_float should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_ref
+#   error "__cpp_lib_atomic_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_shared_ptr
+#   error "__cpp_lib_atomic_shared_ptr should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_wait
+#   error "__cpp_lib_atomic_wait should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_float
+#   error "__cpp_lib_atomic_float should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_ref
+#   error "__cpp_lib_atomic_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_shared_ptr
+#   error "__cpp_lib_atomic_shared_ptr should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_wait
+#   error "__cpp_lib_atomic_wait should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_float
+#   error "__cpp_lib_atomic_float should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should be defined in c++17"
+# endif
+# if __cpp_lib_atomic_is_always_lock_free != 201603L
+#   error "__cpp_lib_atomic_is_always_lock_free should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_ref
+#   error "__cpp_lib_atomic_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_shared_ptr
+#   error "__cpp_lib_atomic_shared_ptr should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_wait
+#   error "__cpp_lib_atomic_wait should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_flag_test != 201907L
+#   error "__cpp_lib_atomic_flag_test should have the value 201907L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_float != 201711L
+#     error "__cpp_lib_atomic_float should have the value 201711L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_is_always_lock_free != 201603L
+#   error "__cpp_lib_atomic_is_always_lock_free should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_lock_free_type_aliases != 201907L
+#   error "__cpp_lib_atomic_lock_free_type_aliases should have the value 201907L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_ref != 201806L
+#     error "__cpp_lib_atomic_ref should have the value 201806L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_shared_ptr != 201711L
+#     error "__cpp_lib_atomic_shared_ptr should have the value 201711L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_value_initialization != 201911L
+#   error "__cpp_lib_atomic_value_initialization should have the value 201911L in c++20"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)
+#   ifndef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_wait != 201907L
+#     error "__cpp_lib_atomic_wait should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)' is not met!"
+#   endif
+# endif
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_flag_test != 201907L
+#   error "__cpp_lib_atomic_flag_test should have the value 201907L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_float != 201711L
+#     error "__cpp_lib_atomic_float should have the value 201711L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_is_always_lock_free != 201603L
+#   error "__cpp_lib_atomic_is_always_lock_free should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_lock_free_type_aliases != 201907L
+#   error "__cpp_lib_atomic_lock_free_type_aliases should have the value 201907L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_ref != 201806L
+#     error "__cpp_lib_atomic_ref should have the value 201806L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_shared_ptr != 201711L
+#     error "__cpp_lib_atomic_shared_ptr should have the value 201711L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_value_initialization != 201911L
+#   error "__cpp_lib_atomic_value_initialization should have the value 201911L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)
+#   ifndef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_wait != 201907L
+#     error "__cpp_lib_atomic_wait should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)' is not met!"
+#   endif
+# endif
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/barrier.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/barrier.version.compile.pass.cpp
new file mode 100644
index 0000000..109c955
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/barrier.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <barrier>
+
+// Test the feature test macros defined by <barrier>
+
+/*  Constant             Value
+    __cpp_lib_barrier    201907L [C++20]
+*/
+
+#include <barrier>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_barrier
+#   error "__cpp_lib_barrier should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_barrier
+#   error "__cpp_lib_barrier should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_barrier
+#   error "__cpp_lib_barrier should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)
+#   ifndef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should be defined in c++20"
+#   endif
+#   if __cpp_lib_barrier != 201907L
+#     error "__cpp_lib_barrier should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)
+#   ifndef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should be defined in c++2b"
+#   endif
+#   if __cpp_lib_barrier != 201907L
+#     error "__cpp_lib_barrier should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.compile.pass.cpp
new file mode 100644
index 0000000..6ab2749
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/bit.version.compile.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <bit>
+
+// Test the feature test macros defined by <bit>
+
+/*  Constant              Value
+    __cpp_lib_bit_cast    201806L [C++20]
+    __cpp_lib_bitops      201907L [C++20]
+    __cpp_lib_byteswap    202110L [C++2b]
+    __cpp_lib_endian      201907L [C++20]
+    __cpp_lib_int_pow2    202002L [C++20]
+*/
+
+#include <bit>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bitops
+#   error "__cpp_lib_bitops should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bitops
+#   error "__cpp_lib_bitops should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bitops
+#   error "__cpp_lib_bitops should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should be defined in c++20"
+# endif
+# if __cpp_lib_bit_cast != 201806L
+#   error "__cpp_lib_bit_cast should have the value 201806L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should be defined in c++20"
+#   endif
+#   if __cpp_lib_bitops != 201907L
+#     error "__cpp_lib_bitops should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_endian
+#   error "__cpp_lib_endian should be defined in c++20"
+# endif
+# if __cpp_lib_endian != 201907L
+#   error "__cpp_lib_endian should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should be defined in c++20"
+# endif
+# if __cpp_lib_int_pow2 != 202002L
+#   error "__cpp_lib_int_pow2 should have the value 202002L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should be defined in c++2b"
+# endif
+# if __cpp_lib_bit_cast != 201806L
+#   error "__cpp_lib_bit_cast should have the value 201806L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should be defined in c++2b"
+#   endif
+#   if __cpp_lib_bitops != 201907L
+#     error "__cpp_lib_bitops should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should be defined in c++2b"
+# endif
+# if __cpp_lib_byteswap != 202110L
+#   error "__cpp_lib_byteswap should have the value 202110L in c++2b"
+# endif
+
+# ifndef __cpp_lib_endian
+#   error "__cpp_lib_endian should be defined in c++2b"
+# endif
+# if __cpp_lib_endian != 201907L
+#   error "__cpp_lib_endian should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should be defined in c++2b"
+# endif
+# if __cpp_lib_int_pow2 != 202002L
+#   error "__cpp_lib_int_pow2 should have the value 202002L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/bitset.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/bitset.version.compile.pass.cpp
new file mode 100644
index 0000000..8179d3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/bitset.version.compile.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <bitset>
+
+// Test the feature test macros defined by <bitset>
+
+/*  Constant                      Value
+    __cpp_lib_constexpr_bitset    202207L [C++2b]
+*/
+
+#include <bitset>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_bitset != 202207L
+#   error "__cpp_lib_constexpr_bitset should have the value 202207L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/charconv.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/charconv.version.compile.pass.cpp
new file mode 100644
index 0000000..8042ff6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/charconv.version.compile.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <charconv>
+
+// Test the feature test macros defined by <charconv>
+
+/*  Constant                        Value
+    __cpp_lib_constexpr_charconv    202207L [C++2b]
+    __cpp_lib_to_chars              201611L [C++17]
+*/
+
+#include <charconv>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_to_chars
+#   error "__cpp_lib_to_chars should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_to_chars
+#   error "__cpp_lib_to_chars should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should be defined in c++17"
+#   endif
+#   if __cpp_lib_to_chars != 201611L
+#     error "__cpp_lib_to_chars should have the value 201611L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should be defined in c++20"
+#   endif
+#   if __cpp_lib_to_chars != 201611L
+#     error "__cpp_lib_to_chars should have the value 201611L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_charconv != 202207L
+#   error "__cpp_lib_constexpr_charconv should have the value 202207L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should be defined in c++2b"
+#   endif
+#   if __cpp_lib_to_chars != 201611L
+#     error "__cpp_lib_to_chars should have the value 201611L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/chrono.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/chrono.version.compile.pass.cpp
new file mode 100644
index 0000000..6bed4a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/chrono.version.compile.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <chrono>
+
+// Test the feature test macros defined by <chrono>
+
+/*  Constant                 Value
+    __cpp_lib_chrono         201611L [C++17]
+    __cpp_lib_chrono_udls    201304L [C++14]
+*/
+
+#include <chrono>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should not be defined before c++14"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++14"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++14"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should be defined in c++17"
+# endif
+# if __cpp_lib_chrono != 201611L
+#   error "__cpp_lib_chrono should have the value 201611L in c++17"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++17"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should be defined in c++20"
+# endif
+# if __cpp_lib_chrono != 201611L
+#   error "__cpp_lib_chrono should have the value 201611L in c++20"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++20"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should be defined in c++2b"
+# endif
+# if __cpp_lib_chrono != 201611L
+#   error "__cpp_lib_chrono should have the value 201611L in c++2b"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++2b"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cmath.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cmath.version.compile.pass.cpp
new file mode 100644
index 0000000..2a70259
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cmath.version.compile.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <cmath>
+
+// Test the feature test macros defined by <cmath>
+
+/*  Constant                            Value
+    __cpp_lib_constexpr_cmath           202202L [C++2b]
+    __cpp_lib_hypot                     201603L [C++17]
+    __cpp_lib_interpolate               201902L [C++20]
+    __cpp_lib_math_special_functions    201603L [C++17]
+*/
+
+#include <cmath>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_math_special_functions
+#   error "__cpp_lib_math_special_functions should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_math_special_functions
+#   error "__cpp_lib_math_special_functions should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should be defined in c++17"
+# endif
+# if __cpp_lib_hypot != 201603L
+#   error "__cpp_lib_hypot should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should be defined in c++17"
+#   endif
+#   if __cpp_lib_math_special_functions != 201603L
+#     error "__cpp_lib_math_special_functions should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should be defined in c++20"
+# endif
+# if __cpp_lib_hypot != 201603L
+#   error "__cpp_lib_hypot should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should be defined in c++20"
+# endif
+# if __cpp_lib_interpolate != 201902L
+#   error "__cpp_lib_interpolate should have the value 201902L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should be defined in c++20"
+#   endif
+#   if __cpp_lib_math_special_functions != 201603L
+#     error "__cpp_lib_math_special_functions should have the value 201603L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_cmath
+#     error "__cpp_lib_constexpr_cmath should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_cmath != 202202L
+#     error "__cpp_lib_constexpr_cmath should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_cmath
+#     error "__cpp_lib_constexpr_cmath should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should be defined in c++2b"
+# endif
+# if __cpp_lib_hypot != 201603L
+#   error "__cpp_lib_hypot should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should be defined in c++2b"
+# endif
+# if __cpp_lib_interpolate != 201902L
+#   error "__cpp_lib_interpolate should have the value 201902L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should be defined in c++2b"
+#   endif
+#   if __cpp_lib_math_special_functions != 201603L
+#     error "__cpp_lib_math_special_functions should have the value 201603L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/compare.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/compare.version.compile.pass.cpp
new file mode 100644
index 0000000..cb50477
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/compare.version.compile.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <compare>
+
+// Test the feature test macros defined by <compare>
+
+/*  Constant                          Value
+    __cpp_lib_three_way_comparison    201907L [C++20]
+*/
+
+#include <compare>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_three_way_comparison
+#   error "__cpp_lib_three_way_comparison should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_three_way_comparison
+#   error "__cpp_lib_three_way_comparison should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_three_way_comparison
+#   error "__cpp_lib_three_way_comparison should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should be defined in c++20"
+#   endif
+#   if __cpp_lib_three_way_comparison != 201907L
+#     error "__cpp_lib_three_way_comparison should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should be defined in c++2b"
+#   endif
+#   if __cpp_lib_three_way_comparison != 201907L
+#     error "__cpp_lib_three_way_comparison should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/complex.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/complex.version.compile.pass.cpp
new file mode 100644
index 0000000..1ee022b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/complex.version.compile.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <complex>
+
+// Test the feature test macros defined by <complex>
+
+/*  Constant                       Value
+    __cpp_lib_complex_udls         201309L [C++14]
+    __cpp_lib_constexpr_complex    201711L [C++20]
+*/
+
+#include <complex>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++14"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++14"
+# endif
+
+# ifdef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++17"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++20"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_complex != 201711L
+#   error "__cpp_lib_constexpr_complex should have the value 201711L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++2b"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_complex != 201711L
+#   error "__cpp_lib_constexpr_complex should have the value 201711L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/concepts.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/concepts.version.compile.pass.cpp
new file mode 100644
index 0000000..09cff65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/concepts.version.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <concepts>
+
+// Test the feature test macros defined by <concepts>
+
+/*  Constant              Value
+    __cpp_lib_concepts    202002L [C++20]
+*/
+
+#include <concepts>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should be defined in c++20"
+# endif
+# if __cpp_lib_concepts != 202002L
+#   error "__cpp_lib_concepts should have the value 202002L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should be defined in c++2b"
+# endif
+# if __cpp_lib_concepts != 202002L
+#   error "__cpp_lib_concepts should have the value 202002L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/coroutine.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/coroutine.version.compile.pass.cpp
new file mode 100644
index 0000000..40caf47
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/coroutine.version.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <coroutine>
+
+// Test the feature test macros defined by <coroutine>
+
+/*  Constant               Value
+    __cpp_lib_coroutine    201902L [C++20]
+*/
+
+#include <coroutine>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should be defined in c++20"
+# endif
+# if __cpp_lib_coroutine != 201902L
+#   error "__cpp_lib_coroutine should have the value 201902L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should be defined in c++2b"
+# endif
+# if __cpp_lib_coroutine != 201902L
+#   error "__cpp_lib_coroutine should have the value 201902L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cstddef.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cstddef.version.compile.pass.cpp
new file mode 100644
index 0000000..789de89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cstddef.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <cstddef>
+
+// Test the feature test macros defined by <cstddef>
+
+/*  Constant          Value
+    __cpp_lib_byte    201603L [C++17]
+*/
+
+#include <cstddef>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_byte
+#   error "__cpp_lib_byte should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_byte
+#   error "__cpp_lib_byte should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_byte
+#   error "__cpp_lib_byte should be defined in c++17"
+# endif
+# if __cpp_lib_byte != 201603L
+#   error "__cpp_lib_byte should have the value 201603L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_byte
+#   error "__cpp_lib_byte should be defined in c++20"
+# endif
+# if __cpp_lib_byte != 201603L
+#   error "__cpp_lib_byte should have the value 201603L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_byte
+#   error "__cpp_lib_byte should be defined in c++2b"
+# endif
+# if __cpp_lib_byte != 201603L
+#   error "__cpp_lib_byte should have the value 201603L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cstdlib.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cstdlib.version.compile.pass.cpp
new file mode 100644
index 0000000..99aa931
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/cstdlib.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <cstdlib>
+
+// Test the feature test macros defined by <cstdlib>
+
+/*  Constant                     Value
+    __cpp_lib_constexpr_cmath    202202L [C++2b]
+*/
+
+#include <cstdlib>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_cmath
+#     error "__cpp_lib_constexpr_cmath should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_cmath != 202202L
+#     error "__cpp_lib_constexpr_cmath should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_cmath
+#     error "__cpp_lib_constexpr_cmath should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/deque.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/deque.version.compile.pass.cpp
new file mode 100644
index 0000000..b61fad7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/deque.version.compile.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <deque>
+
+// Test the feature test macros defined by <deque>
+
+/*  Constant                                      Value
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+    __cpp_lib_erase_if                            202002L [C++20]
+    __cpp_lib_nonmember_container_access          201411L [C++17]
+    __cpp_lib_ranges_to_container                 202202L [C++2b]
+*/
+
+#include <deque>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/exception.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/exception.version.compile.pass.cpp
new file mode 100644
index 0000000..0617d25
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/exception.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <exception>
+
+// Test the feature test macros defined by <exception>
+
+/*  Constant                         Value
+    __cpp_lib_uncaught_exceptions    201411L [C++17]
+*/
+
+#include <exception>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should be defined in c++17"
+# endif
+# if __cpp_lib_uncaught_exceptions != 201411L
+#   error "__cpp_lib_uncaught_exceptions should have the value 201411L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should be defined in c++20"
+# endif
+# if __cpp_lib_uncaught_exceptions != 201411L
+#   error "__cpp_lib_uncaught_exceptions should have the value 201411L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should be defined in c++2b"
+# endif
+# if __cpp_lib_uncaught_exceptions != 201411L
+#   error "__cpp_lib_uncaught_exceptions should have the value 201411L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/execution.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/execution.version.compile.pass.cpp
new file mode 100644
index 0000000..0b1c7a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/execution.version.compile.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <execution>
+
+// Test the feature test macros defined by <execution>
+
+/*  Constant               Value
+    __cpp_lib_execution    201603L [C++17]
+                           201902L [C++20]
+*/
+
+#include <execution>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_execution
+#   error "__cpp_lib_execution should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_execution
+#   error "__cpp_lib_execution should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_execution
+#     error "__cpp_lib_execution should be defined in c++17"
+#   endif
+#   if __cpp_lib_execution != 201603L
+#     error "__cpp_lib_execution should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_execution
+#     error "__cpp_lib_execution should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_execution
+#     error "__cpp_lib_execution should be defined in c++20"
+#   endif
+#   if __cpp_lib_execution != 201902L
+#     error "__cpp_lib_execution should have the value 201902L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_execution
+#     error "__cpp_lib_execution should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_execution
+#     error "__cpp_lib_execution should be defined in c++2b"
+#   endif
+#   if __cpp_lib_execution != 201902L
+#     error "__cpp_lib_execution should have the value 201902L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_execution
+#     error "__cpp_lib_execution should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/expected.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/expected.version.compile.pass.cpp
new file mode 100644
index 0000000..4872981
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/expected.version.compile.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <expected>
+
+// Test the feature test macros defined by <expected>
+
+/*  Constant              Value
+    __cpp_lib_expected    202202L [C++2b]
+*/
+
+#include <expected>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_expected
+#   error "__cpp_lib_expected should be defined in c++2b"
+# endif
+# if __cpp_lib_expected != 202202L
+#   error "__cpp_lib_expected should have the value 202202L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/filesystem.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/filesystem.version.compile.pass.cpp
new file mode 100644
index 0000000..4530898
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/filesystem.version.compile.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-filesystem
+
+// <filesystem>
+
+// Test the feature test macros defined by <filesystem>
+
+/*  Constant                Value
+    __cpp_lib_char8_t       201907L [C++20]
+    __cpp_lib_filesystem    201703L [C++17]
+*/
+
+#include <filesystem>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_filesystem
+#   error "__cpp_lib_filesystem should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_filesystem
+#   error "__cpp_lib_filesystem should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)
+#   ifndef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should be defined in c++17"
+#   endif
+#   if __cpp_lib_filesystem != 201703L
+#     error "__cpp_lib_filesystem should have the value 201703L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)
+#   ifndef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should be defined in c++20"
+#   endif
+#   if __cpp_lib_filesystem != 201703L
+#     error "__cpp_lib_filesystem should have the value 201703L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)
+#   ifndef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should be defined in c++2b"
+#   endif
+#   if __cpp_lib_filesystem != 201703L
+#     error "__cpp_lib_filesystem should have the value 201703L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/format.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/format.version.compile.pass.cpp
new file mode 100644
index 0000000..7e18331
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/format.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// Test the feature test macros defined by <format>
+
+/*  Constant            Value
+    __cpp_lib_format    202106L [C++20]
+*/
+
+#include <format>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_format
+#   error "__cpp_lib_format should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_format
+#   error "__cpp_lib_format should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_format
+#   error "__cpp_lib_format should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_format
+#     error "__cpp_lib_format should be defined in c++20"
+#   endif
+#   if __cpp_lib_format != 202106L
+#     error "__cpp_lib_format should have the value 202106L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_format
+#     error "__cpp_lib_format should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_format
+#     error "__cpp_lib_format should be defined in c++2b"
+#   endif
+#   if __cpp_lib_format != 202106L
+#     error "__cpp_lib_format should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_format
+#     error "__cpp_lib_format should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/forward_list.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/forward_list.version.compile.pass.cpp
new file mode 100644
index 0000000..4e9bb59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/forward_list.version.compile.pass.cpp
@@ -0,0 +1,209 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <forward_list>
+
+// Test the feature test macros defined by <forward_list>
+
+/*  Constant                                      Value
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+    __cpp_lib_erase_if                            202002L [C++20]
+    __cpp_lib_incomplete_container_elements       201505L [C++17]
+    __cpp_lib_list_remove_return_type             201806L [C++20]
+    __cpp_lib_nonmember_container_access          201411L [C++17]
+    __cpp_lib_ranges_to_container                 202202L [C++2b]
+*/
+
+#include <forward_list>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++17"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++20"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++20"
+# endif
+
+# ifndef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should be defined in c++20"
+# endif
+# if __cpp_lib_list_remove_return_type != 201806L
+#   error "__cpp_lib_list_remove_return_type should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++2b"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++2b"
+# endif
+
+# ifndef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should be defined in c++2b"
+# endif
+# if __cpp_lib_list_remove_return_type != 201806L
+#   error "__cpp_lib_list_remove_return_type should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.compile.pass.cpp
new file mode 100644
index 0000000..15c0920
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.compile.pass.cpp
@@ -0,0 +1,390 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <functional>
+
+// Test the feature test macros defined by <functional>
+
+/*  Constant                           Value
+    __cpp_lib_bind_back                202202L [C++2b]
+    __cpp_lib_bind_front               201907L [C++20]
+    __cpp_lib_boyer_moore_searcher     201603L [C++17]
+    __cpp_lib_constexpr_functional     201907L [C++20]
+    __cpp_lib_invoke                   201411L [C++17]
+    __cpp_lib_invoke_r                 202106L [C++2b]
+    __cpp_lib_move_only_function       202110L [C++2b]
+    __cpp_lib_not_fn                   201603L [C++17]
+    __cpp_lib_ranges                   202106L [C++20]
+    __cpp_lib_result_of_sfinae         201210L [C++14]
+    __cpp_lib_transparent_operators    201210L [C++14]
+                                       201510L [C++17]
+    __cpp_lib_unwrap_ref               201811L [C++20]
+*/
+
+#include <functional>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++14"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++14"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++14"
+# endif
+# if __cpp_lib_transparent_operators != 201210L
+#   error "__cpp_lib_transparent_operators should have the value 201210L in c++14"
+# endif
+
+# ifdef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should be defined in c++17"
+# endif
+# if __cpp_lib_boyer_moore_searcher != 201603L
+#   error "__cpp_lib_boyer_moore_searcher should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should be defined in c++17"
+# endif
+# if __cpp_lib_invoke != 201411L
+#   error "__cpp_lib_invoke should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should be defined in c++17"
+# endif
+# if __cpp_lib_not_fn != 201603L
+#   error "__cpp_lib_not_fn should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++17"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++17"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++17"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++17"
+# endif
+
+# ifdef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should be defined in c++20"
+# endif
+# if __cpp_lib_bind_front != 201907L
+#   error "__cpp_lib_bind_front should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should be defined in c++20"
+# endif
+# if __cpp_lib_boyer_moore_searcher != 201603L
+#   error "__cpp_lib_boyer_moore_searcher should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_functional != 201907L
+#   error "__cpp_lib_constexpr_functional should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should be defined in c++20"
+# endif
+# if __cpp_lib_invoke != 201411L
+#   error "__cpp_lib_invoke should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should be defined in c++20"
+# endif
+# if __cpp_lib_not_fn != 201603L
+#   error "__cpp_lib_not_fn should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++20"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++20"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++20"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++20"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++20"
+# endif
+
+# ifndef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should be defined in c++20"
+# endif
+# if __cpp_lib_unwrap_ref != 201811L
+#   error "__cpp_lib_unwrap_ref should have the value 201811L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bind_back
+#     error "__cpp_lib_bind_back should be defined in c++2b"
+#   endif
+#   if __cpp_lib_bind_back != 202202L
+#     error "__cpp_lib_bind_back should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bind_back
+#     error "__cpp_lib_bind_back should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should be defined in c++2b"
+# endif
+# if __cpp_lib_bind_front != 201907L
+#   error "__cpp_lib_bind_front should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should be defined in c++2b"
+# endif
+# if __cpp_lib_boyer_moore_searcher != 201603L
+#   error "__cpp_lib_boyer_moore_searcher should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_functional != 201907L
+#   error "__cpp_lib_constexpr_functional should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should be defined in c++2b"
+# endif
+# if __cpp_lib_invoke != 201411L
+#   error "__cpp_lib_invoke should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should be defined in c++2b"
+#   endif
+#   if __cpp_lib_invoke_r != 202106L
+#     error "__cpp_lib_invoke_r should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should be defined in c++2b"
+#   endif
+#   if __cpp_lib_move_only_function != 202110L
+#     error "__cpp_lib_move_only_function should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should be defined in c++2b"
+# endif
+# if __cpp_lib_not_fn != 201603L
+#   error "__cpp_lib_not_fn should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++2b"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++2b"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++2b"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++2b"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++2b"
+# endif
+
+# ifndef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should be defined in c++2b"
+# endif
+# if __cpp_lib_unwrap_ref != 201811L
+#   error "__cpp_lib_unwrap_ref should have the value 201811L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/iomanip.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/iomanip.version.compile.pass.cpp
new file mode 100644
index 0000000..b367c28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/iomanip.version.compile.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <iomanip>
+
+// Test the feature test macros defined by <iomanip>
+
+/*  Constant                      Value
+    __cpp_lib_quoted_string_io    201304L [C++14]
+*/
+
+#include <iomanip>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should not be defined before c++14"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++14"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++14"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++17"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++20"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++2b"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/istream.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/istream.version.compile.pass.cpp
new file mode 100644
index 0000000..51703df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/istream.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <istream>
+
+// Test the feature test macros defined by <istream>
+
+/*  Constant             Value
+    __cpp_lib_char8_t    201907L [C++20]
+*/
+
+#include <istream>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/iterator.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/iterator.version.compile.pass.cpp
new file mode 100644
index 0000000..bf7d03b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/iterator.version.compile.pass.cpp
@@ -0,0 +1,243 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <iterator>
+
+// Test the feature test macros defined by <iterator>
+
+/*  Constant                                Value
+    __cpp_lib_array_constexpr               201603L [C++17]
+                                            201811L [C++20]
+    __cpp_lib_constexpr_iterator            201811L [C++20]
+    __cpp_lib_make_reverse_iterator         201402L [C++14]
+    __cpp_lib_nonmember_container_access    201411L [C++17]
+    __cpp_lib_null_iterators                201304L [C++14]
+    __cpp_lib_ranges                        202106L [C++20]
+    __cpp_lib_ssize                         201902L [C++20]
+*/
+
+#include <iterator>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++14"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++14"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++14"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++17"
+# endif
+# if __cpp_lib_array_constexpr != 201603L
+#   error "__cpp_lib_array_constexpr should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++17"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++17"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++20"
+# endif
+# if __cpp_lib_array_constexpr != 201811L
+#   error "__cpp_lib_array_constexpr should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_iterator != 201811L
+#   error "__cpp_lib_constexpr_iterator should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++20"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++20"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++20"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++20"
+# endif
+
+# ifndef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should be defined in c++20"
+# endif
+# if __cpp_lib_ssize != 201902L
+#   error "__cpp_lib_ssize should have the value 201902L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++2b"
+# endif
+# if __cpp_lib_array_constexpr != 201811L
+#   error "__cpp_lib_array_constexpr should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_iterator != 201811L
+#   error "__cpp_lib_constexpr_iterator should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++2b"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++2b"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++2b"
+# endif
+
+# ifndef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should be defined in c++2b"
+# endif
+# if __cpp_lib_ssize != 201902L
+#   error "__cpp_lib_ssize should have the value 201902L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/latch.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/latch.version.compile.pass.cpp
new file mode 100644
index 0000000..3d40930
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/latch.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <latch>
+
+// Test the feature test macros defined by <latch>
+
+/*  Constant           Value
+    __cpp_lib_latch    201907L [C++20]
+*/
+
+#include <latch>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_latch
+#   error "__cpp_lib_latch should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_latch
+#   error "__cpp_lib_latch should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_latch
+#   error "__cpp_lib_latch should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)
+#   ifndef __cpp_lib_latch
+#     error "__cpp_lib_latch should be defined in c++20"
+#   endif
+#   if __cpp_lib_latch != 201907L
+#     error "__cpp_lib_latch should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_latch
+#     error "__cpp_lib_latch should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)
+#   ifndef __cpp_lib_latch
+#     error "__cpp_lib_latch should be defined in c++2b"
+#   endif
+#   if __cpp_lib_latch != 201907L
+#     error "__cpp_lib_latch should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_latch
+#     error "__cpp_lib_latch should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/limits.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/limits.version.compile.pass.cpp
new file mode 100644
index 0000000..d79f837
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/limits.version.compile.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <limits>
+
+// Test the feature test macros defined by <limits>
+
+/*  Constant             Value
+    __cpp_lib_char8_t    201907L [C++20]
+*/
+
+#include <limits>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/list.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/list.version.compile.pass.cpp
new file mode 100644
index 0000000..6c6aaac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/list.version.compile.pass.cpp
@@ -0,0 +1,209 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <list>
+
+// Test the feature test macros defined by <list>
+
+/*  Constant                                      Value
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+    __cpp_lib_erase_if                            202002L [C++20]
+    __cpp_lib_incomplete_container_elements       201505L [C++17]
+    __cpp_lib_list_remove_return_type             201806L [C++20]
+    __cpp_lib_nonmember_container_access          201411L [C++17]
+    __cpp_lib_ranges_to_container                 202202L [C++2b]
+*/
+
+#include <list>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++17"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++20"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++20"
+# endif
+
+# ifndef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should be defined in c++20"
+# endif
+# if __cpp_lib_list_remove_return_type != 201806L
+#   error "__cpp_lib_list_remove_return_type should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++2b"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++2b"
+# endif
+
+# ifndef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should be defined in c++2b"
+# endif
+# if __cpp_lib_list_remove_return_type != 201806L
+#   error "__cpp_lib_list_remove_return_type should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/locale.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/locale.version.compile.pass.cpp
new file mode 100644
index 0000000..29c381c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/locale.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <locale>
+
+// Test the feature test macros defined by <locale>
+
+/*  Constant             Value
+    __cpp_lib_char8_t    201907L [C++20]
+*/
+
+#include <locale>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.compile.pass.cpp
new file mode 100644
index 0000000..a127d51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.compile.pass.cpp
@@ -0,0 +1,275 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <map>
+
+// Test the feature test macros defined by <map>
+
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_associative_lookup           201304L [C++14]
+    __cpp_lib_map_try_emplace                      201411L [C++17]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+*/
+
+#include <map>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++14"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++17"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should be defined in c++17"
+# endif
+# if __cpp_lib_map_try_emplace != 201411L
+#   error "__cpp_lib_map_try_emplace should have the value 201411L in c++17"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++17"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++20"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should be defined in c++20"
+# endif
+# if __cpp_lib_map_try_emplace != 201411L
+#   error "__cpp_lib_map_try_emplace should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++20"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++2b"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should be defined in c++2b"
+# endif
+# if __cpp_lib_map_try_emplace != 201411L
+#   error "__cpp_lib_map_try_emplace should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++2b"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.compile.pass.cpp
new file mode 100644
index 0000000..2d4b67a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.compile.pass.cpp
@@ -0,0 +1,539 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <memory>
+
+// Test the feature test macros defined by <memory>
+
+/*  Constant                                      Value
+    __cpp_lib_addressof_constexpr                 201603L [C++17]
+    __cpp_lib_allocate_at_least                   202106L [C++2b]
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+    __cpp_lib_assume_aligned                      201811L [C++20]
+    __cpp_lib_atomic_value_initialization         201911L [C++20]
+    __cpp_lib_constexpr_dynamic_alloc             201907L [C++20]
+    __cpp_lib_constexpr_memory                    201811L [C++20]
+                                                  202202L [C++2b]
+    __cpp_lib_enable_shared_from_this             201603L [C++17]
+    __cpp_lib_make_unique                         201304L [C++14]
+    __cpp_lib_out_ptr                             202106L [C++2b]
+    __cpp_lib_ranges                              202106L [C++20]
+    __cpp_lib_raw_memory_algorithms               201606L [C++17]
+    __cpp_lib_shared_ptr_arrays                   201611L [C++17]
+                                                  201707L [C++20]
+    __cpp_lib_shared_ptr_weak_type                201606L [C++17]
+    __cpp_lib_smart_ptr_for_overwrite             202002L [C++20]
+    __cpp_lib_to_address                          201711L [C++20]
+    __cpp_lib_transparent_operators               201210L [C++14]
+                                                  201510L [C++17]
+*/
+
+#include <memory>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_smart_ptr_for_overwrite
+#   error "__cpp_lib_smart_ptr_for_overwrite should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should not be defined before c++14"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++14"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_smart_ptr_for_overwrite
+#   error "__cpp_lib_smart_ptr_for_overwrite should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++14"
+# endif
+# if __cpp_lib_transparent_operators != 201210L
+#   error "__cpp_lib_transparent_operators should have the value 201210L in c++14"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should be defined in c++17"
+# endif
+# if __cpp_lib_addressof_constexpr != 201603L
+#   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should be defined in c++17"
+# endif
+# if __cpp_lib_enable_shared_from_this != 201603L
+#   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++17"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should be defined in c++17"
+# endif
+# if __cpp_lib_raw_memory_algorithms != 201606L
+#   error "__cpp_lib_raw_memory_algorithms should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should be defined in c++17"
+# endif
+# if __cpp_lib_shared_ptr_arrays != 201611L
+#   error "__cpp_lib_shared_ptr_arrays should have the value 201611L in c++17"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should be defined in c++17"
+# endif
+# if __cpp_lib_shared_ptr_weak_type != 201606L
+#   error "__cpp_lib_shared_ptr_weak_type should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_smart_ptr_for_overwrite
+#   error "__cpp_lib_smart_ptr_for_overwrite should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++17"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should be defined in c++20"
+# endif
+# if __cpp_lib_addressof_constexpr != 201603L
+#   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++20"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should be defined in c++20"
+# endif
+# if __cpp_lib_assume_aligned != 201811L
+#   error "__cpp_lib_assume_aligned should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_value_initialization != 201911L
+#   error "__cpp_lib_atomic_value_initialization should have the value 201911L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_dynamic_alloc != 201907L
+#   error "__cpp_lib_constexpr_dynamic_alloc should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_memory != 201811L
+#   error "__cpp_lib_constexpr_memory should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should be defined in c++20"
+# endif
+# if __cpp_lib_enable_shared_from_this != 201603L
+#   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++20"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++20"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++20"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++20"
+# endif
+
+# ifndef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should be defined in c++20"
+# endif
+# if __cpp_lib_raw_memory_algorithms != 201606L
+#   error "__cpp_lib_raw_memory_algorithms should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should be defined in c++20"
+# endif
+# if __cpp_lib_shared_ptr_arrays != 201707L
+#   error "__cpp_lib_shared_ptr_arrays should have the value 201707L in c++20"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should be defined in c++20"
+# endif
+# if __cpp_lib_shared_ptr_weak_type != 201606L
+#   error "__cpp_lib_shared_ptr_weak_type should have the value 201606L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should be defined in c++20"
+#   endif
+#   if __cpp_lib_smart_ptr_for_overwrite != 202002L
+#     error "__cpp_lib_smart_ptr_for_overwrite should have the value 202002L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should be defined in c++20"
+# endif
+# if __cpp_lib_to_address != 201711L
+#   error "__cpp_lib_to_address should have the value 201711L in c++20"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++20"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should be defined in c++2b"
+# endif
+# if __cpp_lib_addressof_constexpr != 201603L
+#   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should be defined in c++2b"
+# endif
+# if __cpp_lib_allocate_at_least != 202106L
+#   error "__cpp_lib_allocate_at_least should have the value 202106L in c++2b"
+# endif
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should be defined in c++2b"
+# endif
+# if __cpp_lib_assume_aligned != 201811L
+#   error "__cpp_lib_assume_aligned should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_value_initialization != 201911L
+#   error "__cpp_lib_atomic_value_initialization should have the value 201911L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_dynamic_alloc != 201907L
+#   error "__cpp_lib_constexpr_dynamic_alloc should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_memory != 202202L
+#   error "__cpp_lib_constexpr_memory should have the value 202202L in c++2b"
+# endif
+
+# ifndef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should be defined in c++2b"
+# endif
+# if __cpp_lib_enable_shared_from_this != 201603L
+#   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++2b"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should be defined in c++2b"
+#   endif
+#   if __cpp_lib_out_ptr != 202106L
+#     error "__cpp_lib_out_ptr should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++2b"
+# endif
+
+# ifndef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should be defined in c++2b"
+# endif
+# if __cpp_lib_raw_memory_algorithms != 201606L
+#   error "__cpp_lib_raw_memory_algorithms should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should be defined in c++2b"
+# endif
+# if __cpp_lib_shared_ptr_arrays != 201707L
+#   error "__cpp_lib_shared_ptr_arrays should have the value 201707L in c++2b"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should be defined in c++2b"
+# endif
+# if __cpp_lib_shared_ptr_weak_type != 201606L
+#   error "__cpp_lib_shared_ptr_weak_type should have the value 201606L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should be defined in c++2b"
+#   endif
+#   if __cpp_lib_smart_ptr_for_overwrite != 202002L
+#     error "__cpp_lib_smart_ptr_for_overwrite should have the value 202002L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should be defined in c++2b"
+# endif
+# if __cpp_lib_to_address != 201711L
+#   error "__cpp_lib_to_address should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++2b"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory_resource.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory_resource.version.compile.pass.cpp
new file mode 100644
index 0000000..573fd0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory_resource.version.compile.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <memory_resource>
+
+// Test the feature test macros defined by <memory_resource>
+
+/*  Constant                           Value
+    __cpp_lib_memory_resource          201603L [C++17]
+    __cpp_lib_polymorphic_allocator    201902L [C++20]
+*/
+
+#include <memory_resource>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++17"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++20"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should be defined in c++20"
+# endif
+# if __cpp_lib_polymorphic_allocator != 201902L
+#   error "__cpp_lib_polymorphic_allocator should have the value 201902L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++2b"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should be defined in c++2b"
+# endif
+# if __cpp_lib_polymorphic_allocator != 201902L
+#   error "__cpp_lib_polymorphic_allocator should have the value 201902L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory_resource.version.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory_resource.version.pass.cpp
new file mode 100644
index 0000000..68c47df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/memory_resource.version.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <memory_resource>
+
+// Test the feature test macros defined by <memory_resource>
+
+/*  Constant                     Value
+    __cpp_lib_memory_resource    201603L [C++17]
+*/
+
+#include <memory_resource>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++17"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++20"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++2b"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/mutex.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/mutex.version.compile.pass.cpp
new file mode 100644
index 0000000..fca784e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/mutex.version.compile.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// Test the feature test macros defined by <mutex>
+
+/*  Constant                 Value
+    __cpp_lib_scoped_lock    201703L [C++17]
+*/
+
+#include <mutex>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should be defined in c++17"
+# endif
+# if __cpp_lib_scoped_lock != 201703L
+#   error "__cpp_lib_scoped_lock should have the value 201703L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should be defined in c++20"
+# endif
+# if __cpp_lib_scoped_lock != 201703L
+#   error "__cpp_lib_scoped_lock should have the value 201703L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should be defined in c++2b"
+# endif
+# if __cpp_lib_scoped_lock != 201703L
+#   error "__cpp_lib_scoped_lock should have the value 201703L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/new.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/new.version.compile.pass.cpp
new file mode 100644
index 0000000..8c7b4c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/new.version.compile.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <new>
+
+// Test the feature test macros defined by <new>
+
+/*  Constant                                Value
+    __cpp_lib_destroying_delete             201806L [C++20]
+    __cpp_lib_hardware_interference_size    201703L [C++17]
+    __cpp_lib_launder                       201606L [C++17]
+*/
+
+#include <new>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_hardware_interference_size
+#   error "__cpp_lib_hardware_interference_size should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_launder
+#   error "__cpp_lib_launder should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_hardware_interference_size
+#   error "__cpp_lib_hardware_interference_size should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_launder
+#   error "__cpp_lib_launder should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined before c++20"
+# endif
+
+# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
+#   ifndef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should be defined in c++17"
+#   endif
+#   if __cpp_lib_hardware_interference_size != 201703L
+#     error "__cpp_lib_hardware_interference_size should have the value 201703L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should not be defined when the requirement 'defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_launder
+#   error "__cpp_lib_launder should be defined in c++17"
+# endif
+# if __cpp_lib_launder != 201606L
+#   error "__cpp_lib_launder should have the value 201606L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L
+#   ifndef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should be defined in c++20"
+#   endif
+#   if __cpp_lib_destroying_delete != 201806L
+#     error "__cpp_lib_destroying_delete should have the value 201806L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should not be defined when the requirement 'TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L' is not met!"
+#   endif
+# endif
+
+# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
+#   ifndef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should be defined in c++20"
+#   endif
+#   if __cpp_lib_hardware_interference_size != 201703L
+#     error "__cpp_lib_hardware_interference_size should have the value 201703L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should not be defined when the requirement 'defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_launder
+#   error "__cpp_lib_launder should be defined in c++20"
+# endif
+# if __cpp_lib_launder != 201606L
+#   error "__cpp_lib_launder should have the value 201606L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L
+#   ifndef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should be defined in c++2b"
+#   endif
+#   if __cpp_lib_destroying_delete != 201806L
+#     error "__cpp_lib_destroying_delete should have the value 201806L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should not be defined when the requirement 'TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L' is not met!"
+#   endif
+# endif
+
+# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
+#   ifndef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should be defined in c++2b"
+#   endif
+#   if __cpp_lib_hardware_interference_size != 201703L
+#     error "__cpp_lib_hardware_interference_size should have the value 201703L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should not be defined when the requirement 'defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_launder
+#   error "__cpp_lib_launder should be defined in c++2b"
+# endif
+# if __cpp_lib_launder != 201606L
+#   error "__cpp_lib_launder should have the value 201606L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/numbers.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/numbers.version.compile.pass.cpp
new file mode 100644
index 0000000..c9e2cfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/numbers.version.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <numbers>
+
+// Test the feature test macros defined by <numbers>
+
+/*  Constant                    Value
+    __cpp_lib_math_constants    201907L [C++20]
+*/
+
+#include <numbers>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should be defined in c++20"
+# endif
+# if __cpp_lib_math_constants != 201907L
+#   error "__cpp_lib_math_constants should have the value 201907L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should be defined in c++2b"
+# endif
+# if __cpp_lib_math_constants != 201907L
+#   error "__cpp_lib_math_constants should have the value 201907L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/numeric.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/numeric.version.compile.pass.cpp
new file mode 100644
index 0000000..0a30e12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/numeric.version.compile.pass.cpp
@@ -0,0 +1,197 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <numeric>
+
+// Test the feature test macros defined by <numeric>
+
+/*  Constant                        Value
+    __cpp_lib_constexpr_numeric     201911L [C++20]
+    __cpp_lib_gcd_lcm               201606L [C++17]
+    __cpp_lib_interpolate           201902L [C++20]
+    __cpp_lib_parallel_algorithm    201603L [C++17]
+    __cpp_lib_ranges_iota           202202L [C++2b]
+*/
+
+#include <numeric>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_parallel_algorithm
+#   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_parallel_algorithm
+#   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should be defined in c++17"
+# endif
+# if __cpp_lib_gcd_lcm != 201606L
+#   error "__cpp_lib_gcd_lcm should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++17"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_numeric != 201911L
+#   error "__cpp_lib_constexpr_numeric should have the value 201911L in c++20"
+# endif
+
+# ifndef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should be defined in c++20"
+# endif
+# if __cpp_lib_gcd_lcm != 201606L
+#   error "__cpp_lib_gcd_lcm should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should be defined in c++20"
+# endif
+# if __cpp_lib_interpolate != 201902L
+#   error "__cpp_lib_interpolate should have the value 201902L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++20"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_numeric != 201911L
+#   error "__cpp_lib_constexpr_numeric should have the value 201911L in c++2b"
+# endif
+
+# ifndef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should be defined in c++2b"
+# endif
+# if __cpp_lib_gcd_lcm != 201606L
+#   error "__cpp_lib_gcd_lcm should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should be defined in c++2b"
+# endif
+# if __cpp_lib_interpolate != 201902L
+#   error "__cpp_lib_interpolate should have the value 201902L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++2b"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_iota
+#     error "__cpp_lib_ranges_iota should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_iota != 202202L
+#     error "__cpp_lib_ranges_iota should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_iota
+#     error "__cpp_lib_ranges_iota should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/optional.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/optional.version.compile.pass.cpp
new file mode 100644
index 0000000..b1c5f31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/optional.version.compile.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <optional>
+
+// Test the feature test macros defined by <optional>
+
+/*  Constant              Value
+    __cpp_lib_optional    201606L [C++17]
+                          202110L [C++2b]
+*/
+
+#include <optional>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_optional
+#   error "__cpp_lib_optional should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_optional
+#   error "__cpp_lib_optional should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_optional
+#   error "__cpp_lib_optional should be defined in c++17"
+# endif
+# if __cpp_lib_optional != 201606L
+#   error "__cpp_lib_optional should have the value 201606L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_optional
+#   error "__cpp_lib_optional should be defined in c++20"
+# endif
+# if __cpp_lib_optional != 201606L
+#   error "__cpp_lib_optional should have the value 201606L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_optional
+#   error "__cpp_lib_optional should be defined in c++2b"
+# endif
+# if __cpp_lib_optional != 202110L
+#   error "__cpp_lib_optional should have the value 202110L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/ostream.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/ostream.version.compile.pass.cpp
new file mode 100644
index 0000000..0f9034f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/ostream.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <ostream>
+
+// Test the feature test macros defined by <ostream>
+
+/*  Constant             Value
+    __cpp_lib_char8_t    201907L [C++20]
+*/
+
+#include <ostream>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/queue.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/queue.version.compile.pass.cpp
new file mode 100644
index 0000000..a76d998
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/queue.version.compile.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <queue>
+
+// Test the feature test macros defined by <queue>
+
+/*  Constant                                       Value
+    __cpp_lib_adaptor_iterator_pair_constructor    202106L [C++2b]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+*/
+
+#include <queue>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should be defined in c++2b"
+# endif
+# if __cpp_lib_adaptor_iterator_pair_constructor != 202106L
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should have the value 202106L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.compile.pass.cpp
new file mode 100644
index 0000000..be51d6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.compile.pass.cpp
@@ -0,0 +1,212 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <ranges>
+
+// Test the feature test macros defined by <ranges>
+
+/*  Constant                      Value
+    __cpp_lib_ranges              202106L [C++20]
+    __cpp_lib_ranges_chunk        202202L [C++2b]
+    __cpp_lib_ranges_chunk_by     202202L [C++2b]
+    __cpp_lib_ranges_join_with    202202L [C++2b]
+    __cpp_lib_ranges_slide        202202L [C++2b]
+    __cpp_lib_ranges_zip          202110L [C++2b]
+*/
+
+#include <ranges>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++20"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_chunk
+#     error "__cpp_lib_ranges_chunk should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_chunk != 202202L
+#     error "__cpp_lib_ranges_chunk should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_chunk
+#     error "__cpp_lib_ranges_chunk should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_chunk_by
+#     error "__cpp_lib_ranges_chunk_by should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_chunk_by != 202202L
+#     error "__cpp_lib_ranges_chunk_by should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_chunk_by
+#     error "__cpp_lib_ranges_chunk_by should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_join_with
+#     error "__cpp_lib_ranges_join_with should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_join_with != 202202L
+#     error "__cpp_lib_ranges_join_with should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_join_with
+#     error "__cpp_lib_ranges_join_with should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_slide
+#     error "__cpp_lib_ranges_slide should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_slide != 202202L
+#     error "__cpp_lib_ranges_slide should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_slide
+#     error "__cpp_lib_ranges_slide should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/regex.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/regex.version.compile.pass.cpp
new file mode 100644
index 0000000..38b9969
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/regex.version.compile.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-localization
+
+// <regex>
+
+// Test the feature test macros defined by <regex>
+
+/*  Constant                                Value
+    __cpp_lib_nonmember_container_access    201411L [C++17]
+*/
+
+#include <regex>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/scoped_allocator.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/scoped_allocator.version.compile.pass.cpp
new file mode 100644
index 0000000..55bf6f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/scoped_allocator.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <scoped_allocator>
+
+// Test the feature test macros defined by <scoped_allocator>
+
+/*  Constant                                      Value
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+*/
+
+#include <scoped_allocator>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/semaphore.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/semaphore.version.compile.pass.cpp
new file mode 100644
index 0000000..f20e9e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/semaphore.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <semaphore>
+
+// Test the feature test macros defined by <semaphore>
+
+/*  Constant               Value
+    __cpp_lib_semaphore    201907L [C++20]
+*/
+
+#include <semaphore>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_semaphore
+#   error "__cpp_lib_semaphore should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_semaphore
+#   error "__cpp_lib_semaphore should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_semaphore
+#   error "__cpp_lib_semaphore should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)
+#   ifndef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should be defined in c++20"
+#   endif
+#   if __cpp_lib_semaphore != 201907L
+#     error "__cpp_lib_semaphore should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)
+#   ifndef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should be defined in c++2b"
+#   endif
+#   if __cpp_lib_semaphore != 201907L
+#     error "__cpp_lib_semaphore should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.compile.pass.cpp
new file mode 100644
index 0000000..9068485
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.compile.pass.cpp
@@ -0,0 +1,245 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <set>
+
+// Test the feature test macros defined by <set>
+
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_associative_lookup           201304L [C++14]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+*/
+
+#include <set>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++14"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++17"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++17"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++20"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++20"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++2b"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++2b"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.compile.pass.cpp
new file mode 100644
index 0000000..fdd9b01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/shared_mutex.version.compile.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <shared_mutex>
+
+// Test the feature test macros defined by <shared_mutex>
+
+/*  Constant                        Value
+    __cpp_lib_shared_mutex          201505L [C++17]
+    __cpp_lib_shared_timed_mutex    201402L [C++14]
+*/
+
+#include <shared_mutex>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_timed_mutex
+#   error "__cpp_lib_shared_timed_mutex should not be defined before c++14"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should not be defined before c++17"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++14"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++14"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER == 17
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)
+#   ifndef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should be defined in c++17"
+#   endif
+#   if __cpp_lib_shared_mutex != 201505L
+#     error "__cpp_lib_shared_mutex should have the value 201505L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++17"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)
+#   ifndef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should be defined in c++20"
+#   endif
+#   if __cpp_lib_shared_mutex != 201505L
+#     error "__cpp_lib_shared_mutex should have the value 201505L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++20"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)
+#   ifndef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should be defined in c++2b"
+#   endif
+#   if __cpp_lib_shared_mutex != 201505L
+#     error "__cpp_lib_shared_mutex should have the value 201505L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++2b"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/source_location.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/source_location.version.compile.pass.cpp
new file mode 100644
index 0000000..0b3bad5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/source_location.version.compile.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <source_location>
+
+// Test the feature test macros defined by <source_location>
+
+/*  Constant                     Value
+    __cpp_lib_source_location    201907L [C++20]
+*/
+
+#include <source_location>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if __has_builtin(__builtin_source_location)
+#   ifndef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should be defined in c++20"
+#   endif
+#   if __cpp_lib_source_location != 201907L
+#     error "__cpp_lib_source_location should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should not be defined when the requirement '__has_builtin(__builtin_source_location)' is not met!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if __has_builtin(__builtin_source_location)
+#   ifndef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should be defined in c++2b"
+#   endif
+#   if __cpp_lib_source_location != 201907L
+#     error "__cpp_lib_source_location should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should not be defined when the requirement '__has_builtin(__builtin_source_location)' is not met!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/source_location.version.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/source_location.version.pass.cpp
new file mode 100644
index 0000000..c3ed983
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/source_location.version.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <source_location>
+
+// Test the feature test macros defined by <source_location>
+
+/*  Constant                     Value
+    __cpp_lib_source_location    201907L [C++20]
+*/
+
+#include <source_location>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if __has_builtin(__builtin_source_location)
+#   ifndef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should be defined in c++20"
+#   endif
+#   if __cpp_lib_source_location != 201907L
+#     error "__cpp_lib_source_location should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should not be defined when __has_builtin(__builtin_source_location) is not defined!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if __has_builtin(__builtin_source_location)
+#   ifndef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should be defined in c++2b"
+#   endif
+#   if __cpp_lib_source_location != 201907L
+#     error "__cpp_lib_source_location should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should not be defined when __has_builtin(__builtin_source_location) is not defined!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/span.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/span.version.compile.pass.cpp
new file mode 100644
index 0000000..a8ceea6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/span.version.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <span>
+
+// Test the feature test macros defined by <span>
+
+/*  Constant          Value
+    __cpp_lib_span    202002L [C++20]
+*/
+
+#include <span>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_span
+#   error "__cpp_lib_span should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_span
+#   error "__cpp_lib_span should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_span
+#   error "__cpp_lib_span should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_span
+#   error "__cpp_lib_span should be defined in c++20"
+# endif
+# if __cpp_lib_span != 202002L
+#   error "__cpp_lib_span should have the value 202002L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_span
+#   error "__cpp_lib_span should be defined in c++2b"
+# endif
+# if __cpp_lib_span != 202002L
+#   error "__cpp_lib_span should have the value 202002L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/stack.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/stack.version.compile.pass.cpp
new file mode 100644
index 0000000..af17a90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/stack.version.compile.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <stack>
+
+// Test the feature test macros defined by <stack>
+
+/*  Constant                                       Value
+    __cpp_lib_adaptor_iterator_pair_constructor    202106L [C++2b]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+*/
+
+#include <stack>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should be defined in c++2b"
+# endif
+# if __cpp_lib_adaptor_iterator_pair_constructor != 202106L
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should have the value 202106L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/stdatomic.h.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/stdatomic.h.version.compile.pass.cpp
new file mode 100644
index 0000000..8492b85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/stdatomic.h.version.compile.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <stdatomic.h>
+
+// Test the feature test macros defined by <stdatomic.h>
+
+/*  Constant                 Value
+    __cpp_lib_stdatomic_h    202011L [C++2b]
+*/
+
+#include <stdatomic.h>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should be defined in c++2b"
+# endif
+# if __cpp_lib_stdatomic_h != 202011L
+#   error "__cpp_lib_stdatomic_h should have the value 202011L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/string.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/string.version.compile.pass.cpp
new file mode 100644
index 0000000..171d358
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/string.version.compile.pass.cpp
@@ -0,0 +1,357 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <string>
+
+// Test the feature test macros defined by <string>
+
+/*  Constant                                      Value
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+    __cpp_lib_char8_t                             201907L [C++20]
+    __cpp_lib_constexpr_string                    201907L [C++20]
+    __cpp_lib_erase_if                            202002L [C++20]
+    __cpp_lib_nonmember_container_access          201411L [C++17]
+    __cpp_lib_ranges_to_container                 202202L [C++2b]
+    __cpp_lib_starts_ends_with                    201711L [C++20]
+    __cpp_lib_string_contains                     202011L [C++2b]
+    __cpp_lib_string_resize_and_overwrite         202110L [C++2b]
+    __cpp_lib_string_udls                         201304L [C++14]
+    __cpp_lib_string_view                         201606L [C++17]
+                                                  201803L [C++20]
+*/
+
+#include <string>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++14"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++17"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++17"
+# endif
+# if __cpp_lib_string_view != 201606L
+#   error "__cpp_lib_string_view should have the value 201606L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_string != 201907L
+#   error "__cpp_lib_constexpr_string should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should be defined in c++20"
+# endif
+# if __cpp_lib_starts_ends_with != 201711L
+#   error "__cpp_lib_starts_ends_with should have the value 201711L in c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++20"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++20"
+# endif
+# if __cpp_lib_string_view != 201803L
+#   error "__cpp_lib_string_view should have the value 201803L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_string != 201907L
+#   error "__cpp_lib_constexpr_string should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should be defined in c++2b"
+# endif
+# if __cpp_lib_starts_ends_with != 201711L
+#   error "__cpp_lib_starts_ends_with should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should be defined in c++2b"
+# endif
+# if __cpp_lib_string_contains != 202011L
+#   error "__cpp_lib_string_contains should have the value 202011L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should be defined in c++2b"
+# endif
+# if __cpp_lib_string_resize_and_overwrite != 202110L
+#   error "__cpp_lib_string_resize_and_overwrite should have the value 202110L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++2b"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++2b"
+# endif
+# if __cpp_lib_string_view != 201803L
+#   error "__cpp_lib_string_view should have the value 201803L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/string_view.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/string_view.version.compile.pass.cpp
new file mode 100644
index 0000000..7182347
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/string_view.version.compile.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <string_view>
+
+// Test the feature test macros defined by <string_view>
+
+/*  Constant                           Value
+    __cpp_lib_char8_t                  201907L [C++20]
+    __cpp_lib_constexpr_string_view    201811L [C++20]
+    __cpp_lib_starts_ends_with         201711L [C++20]
+    __cpp_lib_string_contains          202011L [C++2b]
+    __cpp_lib_string_view              201606L [C++17]
+                                       201803L [C++20]
+*/
+
+#include <string_view>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++17"
+# endif
+# if __cpp_lib_string_view != 201606L
+#   error "__cpp_lib_string_view should have the value 201606L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_string_view != 201811L
+#   error "__cpp_lib_constexpr_string_view should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should be defined in c++20"
+# endif
+# if __cpp_lib_starts_ends_with != 201711L
+#   error "__cpp_lib_starts_ends_with should have the value 201711L in c++20"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++20"
+# endif
+# if __cpp_lib_string_view != 201803L
+#   error "__cpp_lib_string_view should have the value 201803L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_string_view != 201811L
+#   error "__cpp_lib_constexpr_string_view should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should be defined in c++2b"
+# endif
+# if __cpp_lib_starts_ends_with != 201711L
+#   error "__cpp_lib_starts_ends_with should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should be defined in c++2b"
+# endif
+# if __cpp_lib_string_contains != 202011L
+#   error "__cpp_lib_string_contains should have the value 202011L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++2b"
+# endif
+# if __cpp_lib_string_view != 201803L
+#   error "__cpp_lib_string_view should have the value 201803L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/thread.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/thread.version.compile.pass.cpp
new file mode 100644
index 0000000..0f5c066
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/thread.version.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// Test the feature test macros defined by <thread>
+
+/*  Constant             Value
+    __cpp_lib_jthread    201911L [C++20]
+*/
+
+#include <thread>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_jthread
+#   error "__cpp_lib_jthread should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_jthread
+#   error "__cpp_lib_jthread should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_jthread
+#   error "__cpp_lib_jthread should not be defined before c++20"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should be defined in c++20"
+#   endif
+#   if __cpp_lib_jthread != 201911L
+#     error "__cpp_lib_jthread should have the value 201911L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should be defined in c++2b"
+#   endif
+#   if __cpp_lib_jthread != 201911L
+#     error "__cpp_lib_jthread should have the value 201911L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.compile.pass.cpp
new file mode 100644
index 0000000..d3ddc4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.compile.pass.cpp
@@ -0,0 +1,218 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <tuple>
+
+// Test the feature test macros defined by <tuple>
+
+/*  Constant                     Value
+    __cpp_lib_apply              201603L [C++17]
+    __cpp_lib_constexpr_tuple    201811L [C++20]
+    __cpp_lib_make_from_tuple    201606L [C++17]
+    __cpp_lib_ranges_zip         202110L [C++2b]
+    __cpp_lib_tuple_element_t    201402L [C++14]
+    __cpp_lib_tuples_by_type     201304L [C++14]
+*/
+
+#include <tuple>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_apply
+#   error "__cpp_lib_apply should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should not be defined before c++14"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_apply
+#   error "__cpp_lib_apply should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++14"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++14"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++14"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++14"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_apply
+#   error "__cpp_lib_apply should be defined in c++17"
+# endif
+# if __cpp_lib_apply != 201603L
+#   error "__cpp_lib_apply should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should be defined in c++17"
+# endif
+# if __cpp_lib_make_from_tuple != 201606L
+#   error "__cpp_lib_make_from_tuple should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++17"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++17"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++17"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_apply
+#   error "__cpp_lib_apply should be defined in c++20"
+# endif
+# if __cpp_lib_apply != 201603L
+#   error "__cpp_lib_apply should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_tuple != 201811L
+#   error "__cpp_lib_constexpr_tuple should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should be defined in c++20"
+# endif
+# if __cpp_lib_make_from_tuple != 201606L
+#   error "__cpp_lib_make_from_tuple should have the value 201606L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++20"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++20"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++20"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_apply
+#   error "__cpp_lib_apply should be defined in c++2b"
+# endif
+# if __cpp_lib_apply != 201603L
+#   error "__cpp_lib_apply should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_tuple != 201811L
+#   error "__cpp_lib_constexpr_tuple should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should be defined in c++2b"
+# endif
+# if __cpp_lib_make_from_tuple != 201606L
+#   error "__cpp_lib_make_from_tuple should have the value 201606L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++2b"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++2b"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++2b"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.compile.pass.cpp
new file mode 100644
index 0000000..89a1dcf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.compile.pass.cpp
@@ -0,0 +1,707 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <type_traits>
+
+// Test the feature test macros defined by <type_traits>
+
+/*  Constant                                       Value
+    __cpp_lib_bool_constant                        201505L [C++17]
+    __cpp_lib_bounded_array_traits                 201902L [C++20]
+    __cpp_lib_has_unique_object_representations    201606L [C++17]
+    __cpp_lib_integral_constant_callable           201304L [C++14]
+    __cpp_lib_is_aggregate                         201703L [C++17]
+    __cpp_lib_is_constant_evaluated                201811L [C++20]
+    __cpp_lib_is_final                             201402L [C++14]
+    __cpp_lib_is_invocable                         201703L [C++17]
+    __cpp_lib_is_layout_compatible                 201907L [C++20]
+    __cpp_lib_is_nothrow_convertible               201806L [C++20]
+    __cpp_lib_is_null_pointer                      201309L [C++14]
+    __cpp_lib_is_pointer_interconvertible          201907L [C++20]
+    __cpp_lib_is_scoped_enum                       202011L [C++2b]
+    __cpp_lib_is_swappable                         201603L [C++17]
+    __cpp_lib_logical_traits                       201510L [C++17]
+    __cpp_lib_reference_from_temporary             202202L [C++2b]
+    __cpp_lib_remove_cvref                         201711L [C++20]
+    __cpp_lib_result_of_sfinae                     201210L [C++14]
+    __cpp_lib_transformation_trait_aliases         201304L [C++14]
+    __cpp_lib_type_identity                        201806L [C++20]
+    __cpp_lib_type_trait_variable_templates        201510L [C++17]
+    __cpp_lib_void_t                               201411L [C++17]
+*/
+
+#include <type_traits>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_layout_compatible
+#   error "__cpp_lib_is_layout_compatible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_is_pointer_interconvertible
+#   error "__cpp_lib_is_pointer_interconvertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++14"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++14"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++14"
+# endif
+
+# ifdef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_layout_compatible
+#   error "__cpp_lib_is_layout_compatible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++14"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++14"
+# endif
+
+# ifdef __cpp_lib_is_pointer_interconvertible
+#   error "__cpp_lib_is_pointer_interconvertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++14"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++14"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++14"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should be defined in c++17"
+# endif
+# if __cpp_lib_bool_constant != 201505L
+#   error "__cpp_lib_bool_constant should have the value 201505L in c++17"
+# endif
+
+# ifdef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should be defined in c++17"
+# endif
+# if __cpp_lib_has_unique_object_representations != 201606L
+#   error "__cpp_lib_has_unique_object_representations should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++17"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should be defined in c++17"
+# endif
+# if __cpp_lib_is_aggregate != 201703L
+#   error "__cpp_lib_is_aggregate should have the value 201703L in c++17"
+# endif
+
+# ifdef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++17"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++17"
+# endif
+
+# ifndef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should be defined in c++17"
+# endif
+# if __cpp_lib_is_invocable != 201703L
+#   error "__cpp_lib_is_invocable should have the value 201703L in c++17"
+# endif
+
+# ifdef __cpp_lib_is_layout_compatible
+#   error "__cpp_lib_is_layout_compatible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++17"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++17"
+# endif
+
+# ifdef __cpp_lib_is_pointer_interconvertible
+#   error "__cpp_lib_is_pointer_interconvertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should be defined in c++17"
+# endif
+# if __cpp_lib_is_swappable != 201603L
+#   error "__cpp_lib_is_swappable should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should be defined in c++17"
+# endif
+# if __cpp_lib_logical_traits != 201510L
+#   error "__cpp_lib_logical_traits should have the value 201510L in c++17"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++17"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++17"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++17"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should be defined in c++17"
+# endif
+# if __cpp_lib_type_trait_variable_templates != 201510L
+#   error "__cpp_lib_type_trait_variable_templates should have the value 201510L in c++17"
+# endif
+
+# ifndef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should be defined in c++17"
+# endif
+# if __cpp_lib_void_t != 201411L
+#   error "__cpp_lib_void_t should have the value 201411L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should be defined in c++20"
+# endif
+# if __cpp_lib_bool_constant != 201505L
+#   error "__cpp_lib_bool_constant should have the value 201505L in c++20"
+# endif
+
+# ifndef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should be defined in c++20"
+# endif
+# if __cpp_lib_bounded_array_traits != 201902L
+#   error "__cpp_lib_bounded_array_traits should have the value 201902L in c++20"
+# endif
+
+# ifndef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should be defined in c++20"
+# endif
+# if __cpp_lib_has_unique_object_representations != 201606L
+#   error "__cpp_lib_has_unique_object_representations should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++20"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should be defined in c++20"
+# endif
+# if __cpp_lib_is_aggregate != 201703L
+#   error "__cpp_lib_is_aggregate should have the value 201703L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should be defined in c++20"
+# endif
+# if __cpp_lib_is_constant_evaluated != 201811L
+#   error "__cpp_lib_is_constant_evaluated should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++20"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should be defined in c++20"
+# endif
+# if __cpp_lib_is_invocable != 201703L
+#   error "__cpp_lib_is_invocable should have the value 201703L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should be defined in c++20"
+#   endif
+#   if __cpp_lib_is_layout_compatible != 201907L
+#     error "__cpp_lib_is_layout_compatible should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should be defined in c++20"
+# endif
+# if __cpp_lib_is_nothrow_convertible != 201806L
+#   error "__cpp_lib_is_nothrow_convertible should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++20"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should be defined in c++20"
+#   endif
+#   if __cpp_lib_is_pointer_interconvertible != 201907L
+#     error "__cpp_lib_is_pointer_interconvertible should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should be defined in c++20"
+# endif
+# if __cpp_lib_is_swappable != 201603L
+#   error "__cpp_lib_is_swappable should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should be defined in c++20"
+# endif
+# if __cpp_lib_logical_traits != 201510L
+#   error "__cpp_lib_logical_traits should have the value 201510L in c++20"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should be defined in c++20"
+# endif
+# if __cpp_lib_remove_cvref != 201711L
+#   error "__cpp_lib_remove_cvref should have the value 201711L in c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++20"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++20"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++20"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++20"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should be defined in c++20"
+# endif
+# if __cpp_lib_type_trait_variable_templates != 201510L
+#   error "__cpp_lib_type_trait_variable_templates should have the value 201510L in c++20"
+# endif
+
+# ifndef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should be defined in c++20"
+# endif
+# if __cpp_lib_void_t != 201411L
+#   error "__cpp_lib_void_t should have the value 201411L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should be defined in c++2b"
+# endif
+# if __cpp_lib_bool_constant != 201505L
+#   error "__cpp_lib_bool_constant should have the value 201505L in c++2b"
+# endif
+
+# ifndef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should be defined in c++2b"
+# endif
+# if __cpp_lib_bounded_array_traits != 201902L
+#   error "__cpp_lib_bounded_array_traits should have the value 201902L in c++2b"
+# endif
+
+# ifndef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should be defined in c++2b"
+# endif
+# if __cpp_lib_has_unique_object_representations != 201606L
+#   error "__cpp_lib_has_unique_object_representations should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++2b"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should be defined in c++2b"
+# endif
+# if __cpp_lib_is_aggregate != 201703L
+#   error "__cpp_lib_is_aggregate should have the value 201703L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should be defined in c++2b"
+# endif
+# if __cpp_lib_is_constant_evaluated != 201811L
+#   error "__cpp_lib_is_constant_evaluated should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++2b"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should be defined in c++2b"
+# endif
+# if __cpp_lib_is_invocable != 201703L
+#   error "__cpp_lib_is_invocable should have the value 201703L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should be defined in c++2b"
+#   endif
+#   if __cpp_lib_is_layout_compatible != 201907L
+#     error "__cpp_lib_is_layout_compatible should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should be defined in c++2b"
+# endif
+# if __cpp_lib_is_nothrow_convertible != 201806L
+#   error "__cpp_lib_is_nothrow_convertible should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++2b"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should be defined in c++2b"
+#   endif
+#   if __cpp_lib_is_pointer_interconvertible != 201907L
+#     error "__cpp_lib_is_pointer_interconvertible should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should be defined in c++2b"
+# endif
+# if __cpp_lib_is_scoped_enum != 202011L
+#   error "__cpp_lib_is_scoped_enum should have the value 202011L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should be defined in c++2b"
+# endif
+# if __cpp_lib_is_swappable != 201603L
+#   error "__cpp_lib_is_swappable should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should be defined in c++2b"
+# endif
+# if __cpp_lib_logical_traits != 201510L
+#   error "__cpp_lib_logical_traits should have the value 201510L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_reference_from_temporary
+#     error "__cpp_lib_reference_from_temporary should be defined in c++2b"
+#   endif
+#   if __cpp_lib_reference_from_temporary != 202202L
+#     error "__cpp_lib_reference_from_temporary should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_reference_from_temporary
+#     error "__cpp_lib_reference_from_temporary should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should be defined in c++2b"
+# endif
+# if __cpp_lib_remove_cvref != 201711L
+#   error "__cpp_lib_remove_cvref should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++2b"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++2b"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++2b"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++2b"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should be defined in c++2b"
+# endif
+# if __cpp_lib_type_trait_variable_templates != 201510L
+#   error "__cpp_lib_type_trait_variable_templates should have the value 201510L in c++2b"
+# endif
+
+# ifndef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should be defined in c++2b"
+# endif
+# if __cpp_lib_void_t != 201411L
+#   error "__cpp_lib_void_t should have the value 201411L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.compile.pass.cpp
new file mode 100644
index 0000000..75abf3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <typeinfo>
+
+// Test the feature test macros defined by <typeinfo>
+
+/*  Constant                        Value
+    __cpp_lib_constexpr_typeinfo    202106L [C++2b]
+*/
+
+#include <typeinfo>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_typeinfo != 202106L
+#     error "__cpp_lib_constexpr_typeinfo should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.compile.pass.cpp
new file mode 100644
index 0000000..038420c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.compile.pass.cpp
@@ -0,0 +1,269 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <unordered_map>
+
+// Test the feature test macros defined by <unordered_map>
+
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_unordered_lookup             201811L [C++20]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+    __cpp_lib_unordered_map_try_emplace            201411L [C++17]
+*/
+
+#include <unordered_map>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++17"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should be defined in c++17"
+# endif
+# if __cpp_lib_unordered_map_try_emplace != 201411L
+#   error "__cpp_lib_unordered_map_try_emplace should have the value 201411L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should be defined in c++20"
+# endif
+# if __cpp_lib_generic_unordered_lookup != 201811L
+#   error "__cpp_lib_generic_unordered_lookup should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++20"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should be defined in c++20"
+# endif
+# if __cpp_lib_unordered_map_try_emplace != 201411L
+#   error "__cpp_lib_unordered_map_try_emplace should have the value 201411L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should be defined in c++2b"
+# endif
+# if __cpp_lib_generic_unordered_lookup != 201811L
+#   error "__cpp_lib_generic_unordered_lookup should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++2b"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should be defined in c++2b"
+# endif
+# if __cpp_lib_unordered_map_try_emplace != 201411L
+#   error "__cpp_lib_unordered_map_try_emplace should have the value 201411L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.compile.pass.cpp
new file mode 100644
index 0000000..13092c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.compile.pass.cpp
@@ -0,0 +1,239 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <unordered_set>
+
+// Test the feature test macros defined by <unordered_set>
+
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_unordered_lookup             201811L [C++20]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+*/
+
+#include <unordered_set>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++17"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should be defined in c++20"
+# endif
+# if __cpp_lib_generic_unordered_lookup != 201811L
+#   error "__cpp_lib_generic_unordered_lookup should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++20"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should be defined in c++2b"
+# endif
+# if __cpp_lib_generic_unordered_lookup != 201811L
+#   error "__cpp_lib_generic_unordered_lookup should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++2b"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.compile.pass.cpp
new file mode 100644
index 0000000..6a92799
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.compile.pass.cpp
@@ -0,0 +1,347 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <utility>
+
+// Test the feature test macros defined by <utility>
+
+/*  Constant                                  Value
+    __cpp_lib_as_const                        201510L [C++17]
+    __cpp_lib_constexpr_algorithms            201806L [C++20]
+    __cpp_lib_constexpr_utility               201811L [C++20]
+    __cpp_lib_exchange_function               201304L [C++14]
+    __cpp_lib_forward_like                    202207L [C++2b]
+    __cpp_lib_integer_comparison_functions    202002L [C++20]
+    __cpp_lib_integer_sequence                201304L [C++14]
+    __cpp_lib_ranges_zip                      202110L [C++2b]
+    __cpp_lib_to_underlying                   202102L [C++2b]
+    __cpp_lib_tuples_by_type                  201304L [C++14]
+    __cpp_lib_unreachable                     202202L [C++2b]
+*/
+
+#include <utility>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++14"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++14"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++14"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should be defined in c++17"
+# endif
+# if __cpp_lib_as_const != 201510L
+#   error "__cpp_lib_as_const should have the value 201510L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++17"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++17"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++17"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should be defined in c++20"
+# endif
+# if __cpp_lib_as_const != 201510L
+#   error "__cpp_lib_as_const should have the value 201510L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_algorithms != 201806L
+#   error "__cpp_lib_constexpr_algorithms should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_utility != 201811L
+#   error "__cpp_lib_constexpr_utility should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++20"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++20"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should be defined in c++20"
+# endif
+# if __cpp_lib_integer_comparison_functions != 202002L
+#   error "__cpp_lib_integer_comparison_functions should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++20"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++20"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++20"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should be defined in c++2b"
+# endif
+# if __cpp_lib_as_const != 201510L
+#   error "__cpp_lib_as_const should have the value 201510L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_algorithms != 201806L
+#   error "__cpp_lib_constexpr_algorithms should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_utility != 201811L
+#   error "__cpp_lib_constexpr_utility should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++2b"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should be defined in c++2b"
+# endif
+# if __cpp_lib_forward_like != 202207L
+#   error "__cpp_lib_forward_like should have the value 202207L in c++2b"
+# endif
+
+# ifndef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should be defined in c++2b"
+# endif
+# if __cpp_lib_integer_comparison_functions != 202002L
+#   error "__cpp_lib_integer_comparison_functions should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++2b"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should be defined in c++2b"
+# endif
+# if __cpp_lib_to_underlying != 202102L
+#   error "__cpp_lib_to_underlying should have the value 202102L in c++2b"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++2b"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should be defined in c++2b"
+# endif
+# if __cpp_lib_unreachable != 202202L
+#   error "__cpp_lib_unreachable should have the value 202202L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/variant.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/variant.version.compile.pass.cpp
new file mode 100644
index 0000000..dcee42e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/variant.version.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <variant>
+
+// Test the feature test macros defined by <variant>
+
+/*  Constant             Value
+    __cpp_lib_variant    202102L [C++17]
+*/
+
+#include <variant>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_variant
+#   error "__cpp_lib_variant should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_variant
+#   error "__cpp_lib_variant should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_variant
+#   error "__cpp_lib_variant should be defined in c++17"
+# endif
+# if __cpp_lib_variant != 202102L
+#   error "__cpp_lib_variant should have the value 202102L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_variant
+#   error "__cpp_lib_variant should be defined in c++20"
+# endif
+# if __cpp_lib_variant != 202102L
+#   error "__cpp_lib_variant should have the value 202102L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_variant
+#   error "__cpp_lib_variant should be defined in c++2b"
+# endif
+# if __cpp_lib_variant != 202102L
+#   error "__cpp_lib_variant should have the value 202102L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/vector.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/vector.version.compile.pass.cpp
new file mode 100644
index 0000000..2d9b6bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/vector.version.compile.pass.cpp
@@ -0,0 +1,209 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <vector>
+
+// Test the feature test macros defined by <vector>
+
+/*  Constant                                      Value
+    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
+    __cpp_lib_constexpr_vector                    201907L [C++20]
+    __cpp_lib_erase_if                            202002L [C++20]
+    __cpp_lib_incomplete_container_elements       201505L [C++17]
+    __cpp_lib_nonmember_container_access          201411L [C++17]
+    __cpp_lib_ranges_to_container                 202202L [C++2b]
+*/
+
+#include <vector>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++17"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_vector != 201907L
+#   error "__cpp_lib_constexpr_vector should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++20"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_vector != 201907L
+#   error "__cpp_lib_constexpr_vector should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++2b"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.compile.pass.cpp
new file mode 100644
index 0000000..9c1816b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.compile.pass.cpp
@@ -0,0 +1,4980 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <version>
+
+// Test the feature test macros defined by <version>
+
+/*  Constant                                       Value
+    __cpp_lib_adaptor_iterator_pair_constructor    202106L [C++2b]
+    __cpp_lib_addressof_constexpr                  201603L [C++17]
+    __cpp_lib_allocate_at_least                    202106L [C++2b]
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_any                                  201606L [C++17]
+    __cpp_lib_apply                                201603L [C++17]
+    __cpp_lib_array_constexpr                      201603L [C++17]
+                                                   201811L [C++20]
+    __cpp_lib_as_const                             201510L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_assume_aligned                       201811L [C++20]
+    __cpp_lib_atomic_flag_test                     201907L [C++20]
+    __cpp_lib_atomic_float                         201711L [C++20]
+    __cpp_lib_atomic_is_always_lock_free           201603L [C++17]
+    __cpp_lib_atomic_lock_free_type_aliases        201907L [C++20]
+    __cpp_lib_atomic_ref                           201806L [C++20]
+    __cpp_lib_atomic_shared_ptr                    201711L [C++20]
+    __cpp_lib_atomic_value_initialization          201911L [C++20]
+    __cpp_lib_atomic_wait                          201907L [C++20]
+    __cpp_lib_barrier                              201907L [C++20]
+    __cpp_lib_bind_back                            202202L [C++2b]
+    __cpp_lib_bind_front                           201907L [C++20]
+    __cpp_lib_bit_cast                             201806L [C++20]
+    __cpp_lib_bitops                               201907L [C++20]
+    __cpp_lib_bool_constant                        201505L [C++17]
+    __cpp_lib_bounded_array_traits                 201902L [C++20]
+    __cpp_lib_boyer_moore_searcher                 201603L [C++17]
+    __cpp_lib_byte                                 201603L [C++17]
+    __cpp_lib_byteswap                             202110L [C++2b]
+    __cpp_lib_char8_t                              201907L [C++20]
+    __cpp_lib_chrono                               201611L [C++17]
+    __cpp_lib_chrono_udls                          201304L [C++14]
+    __cpp_lib_clamp                                201603L [C++17]
+    __cpp_lib_complex_udls                         201309L [C++14]
+    __cpp_lib_concepts                             202002L [C++20]
+    __cpp_lib_constexpr_algorithms                 201806L [C++20]
+    __cpp_lib_constexpr_bitset                     202207L [C++2b]
+    __cpp_lib_constexpr_charconv                   202207L [C++2b]
+    __cpp_lib_constexpr_cmath                      202202L [C++2b]
+    __cpp_lib_constexpr_complex                    201711L [C++20]
+    __cpp_lib_constexpr_dynamic_alloc              201907L [C++20]
+    __cpp_lib_constexpr_functional                 201907L [C++20]
+    __cpp_lib_constexpr_iterator                   201811L [C++20]
+    __cpp_lib_constexpr_memory                     201811L [C++20]
+                                                   202202L [C++2b]
+    __cpp_lib_constexpr_numeric                    201911L [C++20]
+    __cpp_lib_constexpr_string                     201907L [C++20]
+    __cpp_lib_constexpr_string_view                201811L [C++20]
+    __cpp_lib_constexpr_tuple                      201811L [C++20]
+    __cpp_lib_constexpr_typeinfo                   202106L [C++2b]
+    __cpp_lib_constexpr_utility                    201811L [C++20]
+    __cpp_lib_constexpr_vector                     201907L [C++20]
+    __cpp_lib_coroutine                            201902L [C++20]
+    __cpp_lib_destroying_delete                    201806L [C++20]
+    __cpp_lib_enable_shared_from_this              201603L [C++17]
+    __cpp_lib_endian                               201907L [C++20]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_exchange_function                    201304L [C++14]
+    __cpp_lib_execution                            201603L [C++17]
+                                                   201902L [C++20]
+    __cpp_lib_expected                             202202L [C++2b]
+    __cpp_lib_filesystem                           201703L [C++17]
+    __cpp_lib_format                               202106L [C++20]
+    __cpp_lib_forward_like                         202207L [C++2b]
+    __cpp_lib_gcd_lcm                              201606L [C++17]
+    __cpp_lib_generic_associative_lookup           201304L [C++14]
+    __cpp_lib_generic_unordered_lookup             201811L [C++20]
+    __cpp_lib_hardware_interference_size           201703L [C++17]
+    __cpp_lib_has_unique_object_representations    201606L [C++17]
+    __cpp_lib_hypot                                201603L [C++17]
+    __cpp_lib_incomplete_container_elements        201505L [C++17]
+    __cpp_lib_int_pow2                             202002L [C++20]
+    __cpp_lib_integer_comparison_functions         202002L [C++20]
+    __cpp_lib_integer_sequence                     201304L [C++14]
+    __cpp_lib_integral_constant_callable           201304L [C++14]
+    __cpp_lib_interpolate                          201902L [C++20]
+    __cpp_lib_invoke                               201411L [C++17]
+    __cpp_lib_invoke_r                             202106L [C++2b]
+    __cpp_lib_is_aggregate                         201703L [C++17]
+    __cpp_lib_is_constant_evaluated                201811L [C++20]
+    __cpp_lib_is_final                             201402L [C++14]
+    __cpp_lib_is_invocable                         201703L [C++17]
+    __cpp_lib_is_layout_compatible                 201907L [C++20]
+    __cpp_lib_is_nothrow_convertible               201806L [C++20]
+    __cpp_lib_is_null_pointer                      201309L [C++14]
+    __cpp_lib_is_pointer_interconvertible          201907L [C++20]
+    __cpp_lib_is_scoped_enum                       202011L [C++2b]
+    __cpp_lib_is_swappable                         201603L [C++17]
+    __cpp_lib_jthread                              201911L [C++20]
+    __cpp_lib_latch                                201907L [C++20]
+    __cpp_lib_launder                              201606L [C++17]
+    __cpp_lib_list_remove_return_type              201806L [C++20]
+    __cpp_lib_logical_traits                       201510L [C++17]
+    __cpp_lib_make_from_tuple                      201606L [C++17]
+    __cpp_lib_make_reverse_iterator                201402L [C++14]
+    __cpp_lib_make_unique                          201304L [C++14]
+    __cpp_lib_map_try_emplace                      201411L [C++17]
+    __cpp_lib_math_constants                       201907L [C++20]
+    __cpp_lib_math_special_functions               201603L [C++17]
+    __cpp_lib_memory_resource                      201603L [C++17]
+    __cpp_lib_move_only_function                   202110L [C++2b]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
+    __cpp_lib_not_fn                               201603L [C++17]
+    __cpp_lib_null_iterators                       201304L [C++14]
+    __cpp_lib_optional                             201606L [C++17]
+                                                   202110L [C++2b]
+    __cpp_lib_out_ptr                              202106L [C++2b]
+    __cpp_lib_parallel_algorithm                   201603L [C++17]
+    __cpp_lib_polymorphic_allocator                201902L [C++20]
+    __cpp_lib_quoted_string_io                     201304L [C++14]
+    __cpp_lib_ranges                               202106L [C++20]
+    __cpp_lib_ranges_chunk                         202202L [C++2b]
+    __cpp_lib_ranges_chunk_by                      202202L [C++2b]
+    __cpp_lib_ranges_iota                          202202L [C++2b]
+    __cpp_lib_ranges_join_with                     202202L [C++2b]
+    __cpp_lib_ranges_slide                         202202L [C++2b]
+    __cpp_lib_ranges_starts_ends_with              202106L [C++2b]
+    __cpp_lib_ranges_to_container                  202202L [C++2b]
+    __cpp_lib_ranges_zip                           202110L [C++2b]
+    __cpp_lib_raw_memory_algorithms                201606L [C++17]
+    __cpp_lib_reference_from_temporary             202202L [C++2b]
+    __cpp_lib_remove_cvref                         201711L [C++20]
+    __cpp_lib_result_of_sfinae                     201210L [C++14]
+    __cpp_lib_robust_nonmodifying_seq_ops          201304L [C++14]
+    __cpp_lib_sample                               201603L [C++17]
+    __cpp_lib_scoped_lock                          201703L [C++17]
+    __cpp_lib_semaphore                            201907L [C++20]
+    __cpp_lib_shared_mutex                         201505L [C++17]
+    __cpp_lib_shared_ptr_arrays                    201611L [C++17]
+                                                   201707L [C++20]
+    __cpp_lib_shared_ptr_weak_type                 201606L [C++17]
+    __cpp_lib_shared_timed_mutex                   201402L [C++14]
+    __cpp_lib_shift                                201806L [C++20]
+    __cpp_lib_smart_ptr_for_overwrite              202002L [C++20]
+    __cpp_lib_source_location                      201907L [C++20]
+    __cpp_lib_span                                 202002L [C++20]
+    __cpp_lib_spanstream                           202106L [C++2b]
+    __cpp_lib_ssize                                201902L [C++20]
+    __cpp_lib_stacktrace                           202011L [C++2b]
+    __cpp_lib_starts_ends_with                     201711L [C++20]
+    __cpp_lib_stdatomic_h                          202011L [C++2b]
+    __cpp_lib_string_contains                      202011L [C++2b]
+    __cpp_lib_string_resize_and_overwrite          202110L [C++2b]
+    __cpp_lib_string_udls                          201304L [C++14]
+    __cpp_lib_string_view                          201606L [C++17]
+                                                   201803L [C++20]
+    __cpp_lib_syncbuf                              201803L [C++20]
+    __cpp_lib_three_way_comparison                 201907L [C++20]
+    __cpp_lib_to_address                           201711L [C++20]
+    __cpp_lib_to_array                             201907L [C++20]
+    __cpp_lib_to_chars                             201611L [C++17]
+    __cpp_lib_to_underlying                        202102L [C++2b]
+    __cpp_lib_transformation_trait_aliases         201304L [C++14]
+    __cpp_lib_transparent_operators                201210L [C++14]
+                                                   201510L [C++17]
+    __cpp_lib_tuple_element_t                      201402L [C++14]
+    __cpp_lib_tuples_by_type                       201304L [C++14]
+    __cpp_lib_type_identity                        201806L [C++20]
+    __cpp_lib_type_trait_variable_templates        201510L [C++17]
+    __cpp_lib_uncaught_exceptions                  201411L [C++17]
+    __cpp_lib_unordered_map_try_emplace            201411L [C++17]
+    __cpp_lib_unreachable                          202202L [C++2b]
+    __cpp_lib_unwrap_ref                           201811L [C++20]
+    __cpp_lib_variant                              202102L [C++17]
+    __cpp_lib_void_t                               201411L [C++17]
+*/
+
+#include <version>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_any
+#   error "__cpp_lib_any should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_apply
+#   error "__cpp_lib_apply should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_float
+#   error "__cpp_lib_atomic_float should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_ref
+#   error "__cpp_lib_atomic_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_shared_ptr
+#   error "__cpp_lib_atomic_shared_ptr should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_wait
+#   error "__cpp_lib_atomic_wait should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_barrier
+#   error "__cpp_lib_barrier should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bitops
+#   error "__cpp_lib_bitops should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_byte
+#   error "__cpp_lib_byte should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_execution
+#   error "__cpp_lib_execution should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_filesystem
+#   error "__cpp_lib_filesystem should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_format
+#   error "__cpp_lib_format should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_hardware_interference_size
+#   error "__cpp_lib_hardware_interference_size should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_layout_compatible
+#   error "__cpp_lib_is_layout_compatible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_is_pointer_interconvertible
+#   error "__cpp_lib_is_pointer_interconvertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_jthread
+#   error "__cpp_lib_jthread should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_latch
+#   error "__cpp_lib_latch should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_launder
+#   error "__cpp_lib_launder should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_math_special_functions
+#   error "__cpp_lib_math_special_functions should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_optional
+#   error "__cpp_lib_optional should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_parallel_algorithm
+#   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_sample
+#   error "__cpp_lib_sample should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_semaphore
+#   error "__cpp_lib_semaphore should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_timed_mutex
+#   error "__cpp_lib_shared_timed_mutex should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_shift
+#   error "__cpp_lib_shift should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_smart_ptr_for_overwrite
+#   error "__cpp_lib_smart_ptr_for_overwrite should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_span
+#   error "__cpp_lib_span should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_stacktrace
+#   error "__cpp_lib_stacktrace should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_syncbuf
+#   error "__cpp_lib_syncbuf should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_three_way_comparison
+#   error "__cpp_lib_three_way_comparison should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_chars
+#   error "__cpp_lib_to_chars should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should not be defined before c++14"
+# endif
+
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_variant
+#   error "__cpp_lib_variant should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_any
+#   error "__cpp_lib_any should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_apply
+#   error "__cpp_lib_apply should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_float
+#   error "__cpp_lib_atomic_float should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_ref
+#   error "__cpp_lib_atomic_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_shared_ptr
+#   error "__cpp_lib_atomic_shared_ptr should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_wait
+#   error "__cpp_lib_atomic_wait should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_barrier
+#   error "__cpp_lib_barrier should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bitops
+#   error "__cpp_lib_bitops should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_byte
+#   error "__cpp_lib_byte should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++14"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++14"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++14"
+# endif
+
+# ifdef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++14"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_execution
+#   error "__cpp_lib_execution should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_filesystem
+#   error "__cpp_lib_filesystem should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_format
+#   error "__cpp_lib_format should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++14"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_hardware_interference_size
+#   error "__cpp_lib_hardware_interference_size should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++14"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++14"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++14"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++14"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++14"
+# endif
+
+# ifdef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_is_layout_compatible
+#   error "__cpp_lib_is_layout_compatible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++14"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++14"
+# endif
+
+# ifdef __cpp_lib_is_pointer_interconvertible
+#   error "__cpp_lib_is_pointer_interconvertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_jthread
+#   error "__cpp_lib_jthread should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_latch
+#   error "__cpp_lib_latch should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_launder
+#   error "__cpp_lib_launder should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++14"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++14"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++14"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_math_special_functions
+#   error "__cpp_lib_math_special_functions should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should not be defined before c++17"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++14"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_optional
+#   error "__cpp_lib_optional should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_parallel_algorithm
+#   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++14"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++14"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++14"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++14"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_sample
+#   error "__cpp_lib_sample should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_semaphore
+#   error "__cpp_lib_semaphore should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_shared_mutex
+#   error "__cpp_lib_shared_mutex should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should not be defined before c++17"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++14"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++14"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_shift
+#   error "__cpp_lib_shift should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_smart_ptr_for_overwrite
+#   error "__cpp_lib_smart_ptr_for_overwrite should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_span
+#   error "__cpp_lib_span should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_stacktrace
+#   error "__cpp_lib_stacktrace should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++14"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_syncbuf
+#   error "__cpp_lib_syncbuf should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_three_way_comparison
+#   error "__cpp_lib_three_way_comparison should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_chars
+#   error "__cpp_lib_to_chars should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++14"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++14"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++14"
+# endif
+# if __cpp_lib_transparent_operators != 201210L
+#   error "__cpp_lib_transparent_operators should have the value 201210L in c++14"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++14"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++14"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++14"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++14"
+# endif
+
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_variant
+#   error "__cpp_lib_variant should not be defined before c++17"
+# endif
+
+# ifdef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should not be defined before c++17"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should be defined in c++17"
+# endif
+# if __cpp_lib_addressof_constexpr != 201603L
+#   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
+# endif
+
+# ifndef __cpp_lib_any
+#   error "__cpp_lib_any should be defined in c++17"
+# endif
+# if __cpp_lib_any != 201606L
+#   error "__cpp_lib_any should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_apply
+#   error "__cpp_lib_apply should be defined in c++17"
+# endif
+# if __cpp_lib_apply != 201603L
+#   error "__cpp_lib_apply should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++17"
+# endif
+# if __cpp_lib_array_constexpr != 201603L
+#   error "__cpp_lib_array_constexpr should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should be defined in c++17"
+# endif
+# if __cpp_lib_as_const != 201510L
+#   error "__cpp_lib_as_const should have the value 201510L in c++17"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_float
+#   error "__cpp_lib_atomic_float should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should be defined in c++17"
+# endif
+# if __cpp_lib_atomic_is_always_lock_free != 201603L
+#   error "__cpp_lib_atomic_is_always_lock_free should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_ref
+#   error "__cpp_lib_atomic_ref should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_shared_ptr
+#   error "__cpp_lib_atomic_shared_ptr should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_atomic_wait
+#   error "__cpp_lib_atomic_wait should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_barrier
+#   error "__cpp_lib_barrier should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_bitops
+#   error "__cpp_lib_bitops should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should be defined in c++17"
+# endif
+# if __cpp_lib_bool_constant != 201505L
+#   error "__cpp_lib_bool_constant should have the value 201505L in c++17"
+# endif
+
+# ifdef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should be defined in c++17"
+# endif
+# if __cpp_lib_boyer_moore_searcher != 201603L
+#   error "__cpp_lib_boyer_moore_searcher should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_byte
+#   error "__cpp_lib_byte should be defined in c++17"
+# endif
+# if __cpp_lib_byte != 201603L
+#   error "__cpp_lib_byte should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_char8_t
+#   error "__cpp_lib_char8_t should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should be defined in c++17"
+# endif
+# if __cpp_lib_chrono != 201611L
+#   error "__cpp_lib_chrono should have the value 201611L in c++17"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++17"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should be defined in c++17"
+# endif
+# if __cpp_lib_clamp != 201603L
+#   error "__cpp_lib_clamp should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++17"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++17"
+# endif
+
+# ifdef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_destroying_delete
+#   error "__cpp_lib_destroying_delete should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should be defined in c++17"
+# endif
+# if __cpp_lib_enable_shared_from_this != 201603L
+#   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_endian
+#   error "__cpp_lib_endian should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++17"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++17"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_execution
+#     error "__cpp_lib_execution should be defined in c++17"
+#   endif
+#   if __cpp_lib_execution != 201603L
+#     error "__cpp_lib_execution should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_execution
+#     error "__cpp_lib_execution should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)
+#   ifndef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should be defined in c++17"
+#   endif
+#   if __cpp_lib_filesystem != 201703L
+#     error "__cpp_lib_filesystem should have the value 201703L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)' is not met!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_format
+#   error "__cpp_lib_format should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should be defined in c++17"
+# endif
+# if __cpp_lib_gcd_lcm != 201606L
+#   error "__cpp_lib_gcd_lcm should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++17"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should not be defined before c++20"
+# endif
+
+# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
+#   ifndef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should be defined in c++17"
+#   endif
+#   if __cpp_lib_hardware_interference_size != 201703L
+#     error "__cpp_lib_hardware_interference_size should have the value 201703L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should not be defined when the requirement 'defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should be defined in c++17"
+# endif
+# if __cpp_lib_has_unique_object_representations != 201606L
+#   error "__cpp_lib_has_unique_object_representations should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should be defined in c++17"
+# endif
+# if __cpp_lib_hypot != 201603L
+#   error "__cpp_lib_hypot should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++17"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++17"
+# endif
+
+# ifdef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++17"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++17"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should be defined in c++17"
+# endif
+# if __cpp_lib_invoke != 201411L
+#   error "__cpp_lib_invoke should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should be defined in c++17"
+# endif
+# if __cpp_lib_is_aggregate != 201703L
+#   error "__cpp_lib_is_aggregate should have the value 201703L in c++17"
+# endif
+
+# ifdef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++17"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++17"
+# endif
+
+# ifndef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should be defined in c++17"
+# endif
+# if __cpp_lib_is_invocable != 201703L
+#   error "__cpp_lib_is_invocable should have the value 201703L in c++17"
+# endif
+
+# ifdef __cpp_lib_is_layout_compatible
+#   error "__cpp_lib_is_layout_compatible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++17"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++17"
+# endif
+
+# ifdef __cpp_lib_is_pointer_interconvertible
+#   error "__cpp_lib_is_pointer_interconvertible should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should be defined in c++17"
+# endif
+# if __cpp_lib_is_swappable != 201603L
+#   error "__cpp_lib_is_swappable should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_jthread
+#   error "__cpp_lib_jthread should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_latch
+#   error "__cpp_lib_latch should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_launder
+#   error "__cpp_lib_launder should be defined in c++17"
+# endif
+# if __cpp_lib_launder != 201606L
+#   error "__cpp_lib_launder should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should be defined in c++17"
+# endif
+# if __cpp_lib_logical_traits != 201510L
+#   error "__cpp_lib_logical_traits should have the value 201510L in c++17"
+# endif
+
+# ifndef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should be defined in c++17"
+# endif
+# if __cpp_lib_make_from_tuple != 201606L
+#   error "__cpp_lib_make_from_tuple should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++17"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++17"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++17"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should be defined in c++17"
+# endif
+# if __cpp_lib_map_try_emplace != 201411L
+#   error "__cpp_lib_map_try_emplace should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should be defined in c++17"
+#   endif
+#   if __cpp_lib_math_special_functions != 201603L
+#     error "__cpp_lib_math_special_functions should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++17"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++17"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++17"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++17"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++17"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++17"
+# endif
+
+# ifndef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should be defined in c++17"
+# endif
+# if __cpp_lib_not_fn != 201603L
+#   error "__cpp_lib_not_fn should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++17"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_optional
+#   error "__cpp_lib_optional should be defined in c++17"
+# endif
+# if __cpp_lib_optional != 201606L
+#   error "__cpp_lib_optional should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++17"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++17"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should be defined in c++17"
+# endif
+# if __cpp_lib_raw_memory_algorithms != 201606L
+#   error "__cpp_lib_raw_memory_algorithms should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++17"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++17"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++17"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_sample
+#   error "__cpp_lib_sample should be defined in c++17"
+# endif
+# if __cpp_lib_sample != 201603L
+#   error "__cpp_lib_sample should have the value 201603L in c++17"
+# endif
+
+# ifndef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should be defined in c++17"
+# endif
+# if __cpp_lib_scoped_lock != 201703L
+#   error "__cpp_lib_scoped_lock should have the value 201703L in c++17"
+# endif
+
+# ifdef __cpp_lib_semaphore
+#   error "__cpp_lib_semaphore should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)
+#   ifndef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should be defined in c++17"
+#   endif
+#   if __cpp_lib_shared_mutex != 201505L
+#     error "__cpp_lib_shared_mutex should have the value 201505L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should be defined in c++17"
+# endif
+# if __cpp_lib_shared_ptr_arrays != 201611L
+#   error "__cpp_lib_shared_ptr_arrays should have the value 201611L in c++17"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should be defined in c++17"
+# endif
+# if __cpp_lib_shared_ptr_weak_type != 201606L
+#   error "__cpp_lib_shared_ptr_weak_type should have the value 201606L in c++17"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++17"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++17"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_shift
+#   error "__cpp_lib_shift should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_smart_ptr_for_overwrite
+#   error "__cpp_lib_smart_ptr_for_overwrite should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_source_location
+#   error "__cpp_lib_source_location should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_span
+#   error "__cpp_lib_span should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_stacktrace
+#   error "__cpp_lib_stacktrace should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++17"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++17"
+# endif
+# if __cpp_lib_string_view != 201606L
+#   error "__cpp_lib_string_view should have the value 201606L in c++17"
+# endif
+
+# ifdef __cpp_lib_syncbuf
+#   error "__cpp_lib_syncbuf should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_three_way_comparison
+#   error "__cpp_lib_three_way_comparison should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should not be defined before c++20"
+# endif
+
+# ifdef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should not be defined before c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should be defined in c++17"
+#   endif
+#   if __cpp_lib_to_chars != 201611L
+#     error "__cpp_lib_to_chars should have the value 201611L in c++17"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++17"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++17"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++17"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++17"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++17"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++17"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++17"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++17"
+# endif
+
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should be defined in c++17"
+# endif
+# if __cpp_lib_type_trait_variable_templates != 201510L
+#   error "__cpp_lib_type_trait_variable_templates should have the value 201510L in c++17"
+# endif
+
+# ifndef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should be defined in c++17"
+# endif
+# if __cpp_lib_uncaught_exceptions != 201411L
+#   error "__cpp_lib_uncaught_exceptions should have the value 201411L in c++17"
+# endif
+
+# ifndef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should be defined in c++17"
+# endif
+# if __cpp_lib_unordered_map_try_emplace != 201411L
+#   error "__cpp_lib_unordered_map_try_emplace should have the value 201411L in c++17"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should not be defined before c++20"
+# endif
+
+# ifndef __cpp_lib_variant
+#   error "__cpp_lib_variant should be defined in c++17"
+# endif
+# if __cpp_lib_variant != 202102L
+#   error "__cpp_lib_variant should have the value 202102L in c++17"
+# endif
+
+# ifndef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should be defined in c++17"
+# endif
+# if __cpp_lib_void_t != 201411L
+#   error "__cpp_lib_void_t should have the value 201411L in c++17"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should be defined in c++20"
+# endif
+# if __cpp_lib_addressof_constexpr != 201603L
+#   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++20"
+# endif
+
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_any
+#   error "__cpp_lib_any should be defined in c++20"
+# endif
+# if __cpp_lib_any != 201606L
+#   error "__cpp_lib_any should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_apply
+#   error "__cpp_lib_apply should be defined in c++20"
+# endif
+# if __cpp_lib_apply != 201603L
+#   error "__cpp_lib_apply should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++20"
+# endif
+# if __cpp_lib_array_constexpr != 201811L
+#   error "__cpp_lib_array_constexpr should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should be defined in c++20"
+# endif
+# if __cpp_lib_as_const != 201510L
+#   error "__cpp_lib_as_const should have the value 201510L in c++20"
+# endif
+
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should be defined in c++20"
+# endif
+# if __cpp_lib_assume_aligned != 201811L
+#   error "__cpp_lib_assume_aligned should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_flag_test != 201907L
+#   error "__cpp_lib_atomic_flag_test should have the value 201907L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_float != 201711L
+#     error "__cpp_lib_atomic_float should have the value 201711L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_is_always_lock_free != 201603L
+#   error "__cpp_lib_atomic_is_always_lock_free should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_lock_free_type_aliases != 201907L
+#   error "__cpp_lib_atomic_lock_free_type_aliases should have the value 201907L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_ref != 201806L
+#     error "__cpp_lib_atomic_ref should have the value 201806L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_shared_ptr != 201711L
+#     error "__cpp_lib_atomic_shared_ptr should have the value 201711L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should be defined in c++20"
+# endif
+# if __cpp_lib_atomic_value_initialization != 201911L
+#   error "__cpp_lib_atomic_value_initialization should have the value 201911L in c++20"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)
+#   ifndef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should be defined in c++20"
+#   endif
+#   if __cpp_lib_atomic_wait != 201907L
+#     error "__cpp_lib_atomic_wait should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)
+#   ifndef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should be defined in c++20"
+#   endif
+#   if __cpp_lib_barrier != 201907L
+#     error "__cpp_lib_barrier should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)' is not met!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_bind_back
+#   error "__cpp_lib_bind_back should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should be defined in c++20"
+# endif
+# if __cpp_lib_bind_front != 201907L
+#   error "__cpp_lib_bind_front should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should be defined in c++20"
+# endif
+# if __cpp_lib_bit_cast != 201806L
+#   error "__cpp_lib_bit_cast should have the value 201806L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should be defined in c++20"
+#   endif
+#   if __cpp_lib_bitops != 201907L
+#     error "__cpp_lib_bitops should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should be defined in c++20"
+# endif
+# if __cpp_lib_bool_constant != 201505L
+#   error "__cpp_lib_bool_constant should have the value 201505L in c++20"
+# endif
+
+# ifndef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should be defined in c++20"
+# endif
+# if __cpp_lib_bounded_array_traits != 201902L
+#   error "__cpp_lib_bounded_array_traits should have the value 201902L in c++20"
+# endif
+
+# ifndef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should be defined in c++20"
+# endif
+# if __cpp_lib_boyer_moore_searcher != 201603L
+#   error "__cpp_lib_boyer_moore_searcher should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_byte
+#   error "__cpp_lib_byte should be defined in c++20"
+# endif
+# if __cpp_lib_byte != 201603L
+#   error "__cpp_lib_byte should have the value 201603L in c++20"
+# endif
+
+# ifdef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should not be defined before c++2b"
+# endif
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++20"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should be defined in c++20"
+# endif
+# if __cpp_lib_chrono != 201611L
+#   error "__cpp_lib_chrono should have the value 201611L in c++20"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++20"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should be defined in c++20"
+# endif
+# if __cpp_lib_clamp != 201603L
+#   error "__cpp_lib_clamp should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++20"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++20"
+# endif
+
+# ifndef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should be defined in c++20"
+# endif
+# if __cpp_lib_concepts != 202002L
+#   error "__cpp_lib_concepts should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_algorithms != 201806L
+#   error "__cpp_lib_constexpr_algorithms should have the value 201806L in c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_constexpr_cmath
+#   error "__cpp_lib_constexpr_cmath should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_complex != 201711L
+#   error "__cpp_lib_constexpr_complex should have the value 201711L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_dynamic_alloc != 201907L
+#   error "__cpp_lib_constexpr_dynamic_alloc should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_functional != 201907L
+#   error "__cpp_lib_constexpr_functional should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_iterator != 201811L
+#   error "__cpp_lib_constexpr_iterator should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_memory != 201811L
+#   error "__cpp_lib_constexpr_memory should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_numeric != 201911L
+#   error "__cpp_lib_constexpr_numeric should have the value 201911L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_string != 201907L
+#   error "__cpp_lib_constexpr_string should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_string_view != 201811L
+#   error "__cpp_lib_constexpr_string_view should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_tuple != 201811L
+#   error "__cpp_lib_constexpr_tuple should have the value 201811L in c++20"
+# endif
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_utility != 201811L
+#   error "__cpp_lib_constexpr_utility should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should be defined in c++20"
+# endif
+# if __cpp_lib_constexpr_vector != 201907L
+#   error "__cpp_lib_constexpr_vector should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should be defined in c++20"
+# endif
+# if __cpp_lib_coroutine != 201902L
+#   error "__cpp_lib_coroutine should have the value 201902L in c++20"
+# endif
+
+# if TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L
+#   ifndef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should be defined in c++20"
+#   endif
+#   if __cpp_lib_destroying_delete != 201806L
+#     error "__cpp_lib_destroying_delete should have the value 201806L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should not be defined when the requirement 'TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should be defined in c++20"
+# endif
+# if __cpp_lib_enable_shared_from_this != 201603L
+#   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_endian
+#   error "__cpp_lib_endian should be defined in c++20"
+# endif
+# if __cpp_lib_endian != 201907L
+#   error "__cpp_lib_endian should have the value 201907L in c++20"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++20"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++20"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_execution
+#     error "__cpp_lib_execution should be defined in c++20"
+#   endif
+#   if __cpp_lib_execution != 201902L
+#     error "__cpp_lib_execution should have the value 201902L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_execution
+#     error "__cpp_lib_execution should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_expected
+#   error "__cpp_lib_expected should not be defined before c++2b"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)
+#   ifndef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should be defined in c++20"
+#   endif
+#   if __cpp_lib_filesystem != 201703L
+#     error "__cpp_lib_filesystem should have the value 201703L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_format
+#     error "__cpp_lib_format should be defined in c++20"
+#   endif
+#   if __cpp_lib_format != 202106L
+#     error "__cpp_lib_format should have the value 202106L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_format
+#     error "__cpp_lib_format should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should be defined in c++20"
+# endif
+# if __cpp_lib_gcd_lcm != 201606L
+#   error "__cpp_lib_gcd_lcm should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++20"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should be defined in c++20"
+# endif
+# if __cpp_lib_generic_unordered_lookup != 201811L
+#   error "__cpp_lib_generic_unordered_lookup should have the value 201811L in c++20"
+# endif
+
+# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
+#   ifndef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should be defined in c++20"
+#   endif
+#   if __cpp_lib_hardware_interference_size != 201703L
+#     error "__cpp_lib_hardware_interference_size should have the value 201703L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should not be defined when the requirement 'defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should be defined in c++20"
+# endif
+# if __cpp_lib_has_unique_object_representations != 201606L
+#   error "__cpp_lib_has_unique_object_representations should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should be defined in c++20"
+# endif
+# if __cpp_lib_hypot != 201603L
+#   error "__cpp_lib_hypot should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++20"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++20"
+# endif
+
+# ifndef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should be defined in c++20"
+# endif
+# if __cpp_lib_int_pow2 != 202002L
+#   error "__cpp_lib_int_pow2 should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should be defined in c++20"
+# endif
+# if __cpp_lib_integer_comparison_functions != 202002L
+#   error "__cpp_lib_integer_comparison_functions should have the value 202002L in c++20"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++20"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++20"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should be defined in c++20"
+# endif
+# if __cpp_lib_interpolate != 201902L
+#   error "__cpp_lib_interpolate should have the value 201902L in c++20"
+# endif
+
+# ifndef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should be defined in c++20"
+# endif
+# if __cpp_lib_invoke != 201411L
+#   error "__cpp_lib_invoke should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should be defined in c++20"
+# endif
+# if __cpp_lib_is_aggregate != 201703L
+#   error "__cpp_lib_is_aggregate should have the value 201703L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should be defined in c++20"
+# endif
+# if __cpp_lib_is_constant_evaluated != 201811L
+#   error "__cpp_lib_is_constant_evaluated should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++20"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should be defined in c++20"
+# endif
+# if __cpp_lib_is_invocable != 201703L
+#   error "__cpp_lib_is_invocable should have the value 201703L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should be defined in c++20"
+#   endif
+#   if __cpp_lib_is_layout_compatible != 201907L
+#     error "__cpp_lib_is_layout_compatible should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should be defined in c++20"
+# endif
+# if __cpp_lib_is_nothrow_convertible != 201806L
+#   error "__cpp_lib_is_nothrow_convertible should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++20"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should be defined in c++20"
+#   endif
+#   if __cpp_lib_is_pointer_interconvertible != 201907L
+#     error "__cpp_lib_is_pointer_interconvertible should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should be defined in c++20"
+# endif
+# if __cpp_lib_is_swappable != 201603L
+#   error "__cpp_lib_is_swappable should have the value 201603L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should be defined in c++20"
+#   endif
+#   if __cpp_lib_jthread != 201911L
+#     error "__cpp_lib_jthread should have the value 201911L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)
+#   ifndef __cpp_lib_latch
+#     error "__cpp_lib_latch should be defined in c++20"
+#   endif
+#   if __cpp_lib_latch != 201907L
+#     error "__cpp_lib_latch should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_latch
+#     error "__cpp_lib_latch should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_launder
+#   error "__cpp_lib_launder should be defined in c++20"
+# endif
+# if __cpp_lib_launder != 201606L
+#   error "__cpp_lib_launder should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should be defined in c++20"
+# endif
+# if __cpp_lib_list_remove_return_type != 201806L
+#   error "__cpp_lib_list_remove_return_type should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should be defined in c++20"
+# endif
+# if __cpp_lib_logical_traits != 201510L
+#   error "__cpp_lib_logical_traits should have the value 201510L in c++20"
+# endif
+
+# ifndef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should be defined in c++20"
+# endif
+# if __cpp_lib_make_from_tuple != 201606L
+#   error "__cpp_lib_make_from_tuple should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++20"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++20"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++20"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should be defined in c++20"
+# endif
+# if __cpp_lib_map_try_emplace != 201411L
+#   error "__cpp_lib_map_try_emplace should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should be defined in c++20"
+# endif
+# if __cpp_lib_math_constants != 201907L
+#   error "__cpp_lib_math_constants should have the value 201907L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should be defined in c++20"
+#   endif
+#   if __cpp_lib_math_special_functions != 201603L
+#     error "__cpp_lib_math_special_functions should have the value 201603L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++20"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++20"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++20"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++20"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++20"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should be defined in c++20"
+# endif
+# if __cpp_lib_not_fn != 201603L
+#   error "__cpp_lib_not_fn should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++20"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_optional
+#   error "__cpp_lib_optional should be defined in c++20"
+# endif
+# if __cpp_lib_optional != 201606L
+#   error "__cpp_lib_optional should have the value 201606L in c++20"
+# endif
+
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++20"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should be defined in c++20"
+# endif
+# if __cpp_lib_polymorphic_allocator != 201902L
+#   error "__cpp_lib_polymorphic_allocator should have the value 201902L in c++20"
+# endif
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++20"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++20"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++20"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk
+#   error "__cpp_lib_ranges_chunk should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_chunk_by
+#   error "__cpp_lib_ranges_chunk_by should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_iota
+#   error "__cpp_lib_ranges_iota should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_join_with
+#   error "__cpp_lib_ranges_join_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_slide
+#   error "__cpp_lib_ranges_slide should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_to_container
+#   error "__cpp_lib_ranges_to_container should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should be defined in c++20"
+# endif
+# if __cpp_lib_raw_memory_algorithms != 201606L
+#   error "__cpp_lib_raw_memory_algorithms should have the value 201606L in c++20"
+# endif
+
+# ifdef __cpp_lib_reference_from_temporary
+#   error "__cpp_lib_reference_from_temporary should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should be defined in c++20"
+# endif
+# if __cpp_lib_remove_cvref != 201711L
+#   error "__cpp_lib_remove_cvref should have the value 201711L in c++20"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++20"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++20"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++20"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_sample
+#   error "__cpp_lib_sample should be defined in c++20"
+# endif
+# if __cpp_lib_sample != 201603L
+#   error "__cpp_lib_sample should have the value 201603L in c++20"
+# endif
+
+# ifndef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should be defined in c++20"
+# endif
+# if __cpp_lib_scoped_lock != 201703L
+#   error "__cpp_lib_scoped_lock should have the value 201703L in c++20"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)
+#   ifndef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should be defined in c++20"
+#   endif
+#   if __cpp_lib_semaphore != 201907L
+#     error "__cpp_lib_semaphore should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)
+#   ifndef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should be defined in c++20"
+#   endif
+#   if __cpp_lib_shared_mutex != 201505L
+#     error "__cpp_lib_shared_mutex should have the value 201505L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should be defined in c++20"
+# endif
+# if __cpp_lib_shared_ptr_arrays != 201707L
+#   error "__cpp_lib_shared_ptr_arrays should have the value 201707L in c++20"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should be defined in c++20"
+# endif
+# if __cpp_lib_shared_ptr_weak_type != 201606L
+#   error "__cpp_lib_shared_ptr_weak_type should have the value 201606L in c++20"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++20"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_shift
+#   error "__cpp_lib_shift should be defined in c++20"
+# endif
+# if __cpp_lib_shift != 201806L
+#   error "__cpp_lib_shift should have the value 201806L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should be defined in c++20"
+#   endif
+#   if __cpp_lib_smart_ptr_for_overwrite != 202002L
+#     error "__cpp_lib_smart_ptr_for_overwrite should have the value 202002L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if __has_builtin(__builtin_source_location)
+#   ifndef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should be defined in c++20"
+#   endif
+#   if __cpp_lib_source_location != 201907L
+#     error "__cpp_lib_source_location should have the value 201907L in c++20"
+#   endif
+# else
+#   ifdef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should not be defined when the requirement '__has_builtin(__builtin_source_location)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_span
+#   error "__cpp_lib_span should be defined in c++20"
+# endif
+# if __cpp_lib_span != 202002L
+#   error "__cpp_lib_span should have the value 202002L in c++20"
+# endif
+
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should be defined in c++20"
+# endif
+# if __cpp_lib_ssize != 201902L
+#   error "__cpp_lib_ssize should have the value 201902L in c++20"
+# endif
+
+# ifdef __cpp_lib_stacktrace
+#   error "__cpp_lib_stacktrace should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should be defined in c++20"
+# endif
+# if __cpp_lib_starts_ends_with != 201711L
+#   error "__cpp_lib_starts_ends_with should have the value 201711L in c++20"
+# endif
+
+# ifdef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++20"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++20"
+# endif
+# if __cpp_lib_string_view != 201803L
+#   error "__cpp_lib_string_view should have the value 201803L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_syncbuf
+#     error "__cpp_lib_syncbuf should be defined in c++20"
+#   endif
+#   if __cpp_lib_syncbuf != 201803L
+#     error "__cpp_lib_syncbuf should have the value 201803L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_syncbuf
+#     error "__cpp_lib_syncbuf should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should be defined in c++20"
+#   endif
+#   if __cpp_lib_three_way_comparison != 201907L
+#     error "__cpp_lib_three_way_comparison should have the value 201907L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should be defined in c++20"
+# endif
+# if __cpp_lib_to_address != 201711L
+#   error "__cpp_lib_to_address should have the value 201711L in c++20"
+# endif
+
+# ifndef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should be defined in c++20"
+# endif
+# if __cpp_lib_to_array != 201907L
+#   error "__cpp_lib_to_array should have the value 201907L in c++20"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should be defined in c++20"
+#   endif
+#   if __cpp_lib_to_chars != 201611L
+#     error "__cpp_lib_to_chars should have the value 201611L in c++20"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifdef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++20"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++20"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++20"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++20"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++20"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++20"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++20"
+# endif
+
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++20"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++20"
+# endif
+
+# ifndef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should be defined in c++20"
+# endif
+# if __cpp_lib_type_trait_variable_templates != 201510L
+#   error "__cpp_lib_type_trait_variable_templates should have the value 201510L in c++20"
+# endif
+
+# ifndef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should be defined in c++20"
+# endif
+# if __cpp_lib_uncaught_exceptions != 201411L
+#   error "__cpp_lib_uncaught_exceptions should have the value 201411L in c++20"
+# endif
+
+# ifndef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should be defined in c++20"
+# endif
+# if __cpp_lib_unordered_map_try_emplace != 201411L
+#   error "__cpp_lib_unordered_map_try_emplace should have the value 201411L in c++20"
+# endif
+
+# ifdef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should not be defined before c++2b"
+# endif
+
+# ifndef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should be defined in c++20"
+# endif
+# if __cpp_lib_unwrap_ref != 201811L
+#   error "__cpp_lib_unwrap_ref should have the value 201811L in c++20"
+# endif
+
+# ifndef __cpp_lib_variant
+#   error "__cpp_lib_variant should be defined in c++20"
+# endif
+# if __cpp_lib_variant != 202102L
+#   error "__cpp_lib_variant should have the value 202102L in c++20"
+# endif
+
+# ifndef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should be defined in c++20"
+# endif
+# if __cpp_lib_void_t != 201411L
+#   error "__cpp_lib_void_t should have the value 201411L in c++20"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# ifndef __cpp_lib_adaptor_iterator_pair_constructor
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should be defined in c++2b"
+# endif
+# if __cpp_lib_adaptor_iterator_pair_constructor != 202106L
+#   error "__cpp_lib_adaptor_iterator_pair_constructor should have the value 202106L in c++2b"
+# endif
+
+# ifndef __cpp_lib_addressof_constexpr
+#   error "__cpp_lib_addressof_constexpr should be defined in c++2b"
+# endif
+# if __cpp_lib_addressof_constexpr != 201603L
+#   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should be defined in c++2b"
+# endif
+# if __cpp_lib_allocate_at_least != 202106L
+#   error "__cpp_lib_allocate_at_least should have the value 202106L in c++2b"
+# endif
+
+# ifndef __cpp_lib_allocator_traits_is_always_equal
+#   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
+# endif
+# if __cpp_lib_allocator_traits_is_always_equal != 201411L
+#   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_any
+#   error "__cpp_lib_any should be defined in c++2b"
+# endif
+# if __cpp_lib_any != 201606L
+#   error "__cpp_lib_any should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_apply
+#   error "__cpp_lib_apply should be defined in c++2b"
+# endif
+# if __cpp_lib_apply != 201603L
+#   error "__cpp_lib_apply should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_array_constexpr
+#   error "__cpp_lib_array_constexpr should be defined in c++2b"
+# endif
+# if __cpp_lib_array_constexpr != 201811L
+#   error "__cpp_lib_array_constexpr should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_as_const
+#   error "__cpp_lib_as_const should be defined in c++2b"
+# endif
+# if __cpp_lib_as_const != 201510L
+#   error "__cpp_lib_as_const should have the value 201510L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_assume_aligned
+#   error "__cpp_lib_assume_aligned should be defined in c++2b"
+# endif
+# if __cpp_lib_assume_aligned != 201811L
+#   error "__cpp_lib_assume_aligned should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_atomic_flag_test
+#   error "__cpp_lib_atomic_flag_test should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_flag_test != 201907L
+#   error "__cpp_lib_atomic_flag_test should have the value 201907L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_float != 201711L
+#     error "__cpp_lib_atomic_float should have the value 201711L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_float
+#     error "__cpp_lib_atomic_float should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_is_always_lock_free
+#   error "__cpp_lib_atomic_is_always_lock_free should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_is_always_lock_free != 201603L
+#   error "__cpp_lib_atomic_is_always_lock_free should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_atomic_lock_free_type_aliases
+#   error "__cpp_lib_atomic_lock_free_type_aliases should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_lock_free_type_aliases != 201907L
+#   error "__cpp_lib_atomic_lock_free_type_aliases should have the value 201907L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_ref != 201806L
+#     error "__cpp_lib_atomic_ref should have the value 201806L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_ref
+#     error "__cpp_lib_atomic_ref should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_shared_ptr != 201711L
+#     error "__cpp_lib_atomic_shared_ptr should have the value 201711L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_atomic_shared_ptr
+#     error "__cpp_lib_atomic_shared_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_atomic_value_initialization
+#   error "__cpp_lib_atomic_value_initialization should be defined in c++2b"
+# endif
+# if __cpp_lib_atomic_value_initialization != 201911L
+#   error "__cpp_lib_atomic_value_initialization should have the value 201911L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)
+#   ifndef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should be defined in c++2b"
+#   endif
+#   if __cpp_lib_atomic_wait != 201907L
+#     error "__cpp_lib_atomic_wait should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_atomic_wait
+#     error "__cpp_lib_atomic_wait should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)
+#   ifndef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should be defined in c++2b"
+#   endif
+#   if __cpp_lib_barrier != 201907L
+#     error "__cpp_lib_barrier should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_barrier
+#     error "__cpp_lib_barrier should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bind_back
+#     error "__cpp_lib_bind_back should be defined in c++2b"
+#   endif
+#   if __cpp_lib_bind_back != 202202L
+#     error "__cpp_lib_bind_back should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bind_back
+#     error "__cpp_lib_bind_back should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_bind_front
+#   error "__cpp_lib_bind_front should be defined in c++2b"
+# endif
+# if __cpp_lib_bind_front != 201907L
+#   error "__cpp_lib_bind_front should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_bit_cast
+#   error "__cpp_lib_bit_cast should be defined in c++2b"
+# endif
+# if __cpp_lib_bit_cast != 201806L
+#   error "__cpp_lib_bit_cast should have the value 201806L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should be defined in c++2b"
+#   endif
+#   if __cpp_lib_bitops != 201907L
+#     error "__cpp_lib_bitops should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_bitops
+#     error "__cpp_lib_bitops should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_bool_constant
+#   error "__cpp_lib_bool_constant should be defined in c++2b"
+# endif
+# if __cpp_lib_bool_constant != 201505L
+#   error "__cpp_lib_bool_constant should have the value 201505L in c++2b"
+# endif
+
+# ifndef __cpp_lib_bounded_array_traits
+#   error "__cpp_lib_bounded_array_traits should be defined in c++2b"
+# endif
+# if __cpp_lib_bounded_array_traits != 201902L
+#   error "__cpp_lib_bounded_array_traits should have the value 201902L in c++2b"
+# endif
+
+# ifndef __cpp_lib_boyer_moore_searcher
+#   error "__cpp_lib_boyer_moore_searcher should be defined in c++2b"
+# endif
+# if __cpp_lib_boyer_moore_searcher != 201603L
+#   error "__cpp_lib_boyer_moore_searcher should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_byte
+#   error "__cpp_lib_byte should be defined in c++2b"
+# endif
+# if __cpp_lib_byte != 201603L
+#   error "__cpp_lib_byte should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_byteswap
+#   error "__cpp_lib_byteswap should be defined in c++2b"
+# endif
+# if __cpp_lib_byteswap != 202110L
+#   error "__cpp_lib_byteswap should have the value 202110L in c++2b"
+# endif
+
+# if defined(__cpp_char8_t)
+#   ifndef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should be defined in c++2b"
+#   endif
+#   if __cpp_lib_char8_t != 201907L
+#     error "__cpp_lib_char8_t should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_char8_t
+#     error "__cpp_lib_char8_t should not be defined when the requirement 'defined(__cpp_char8_t)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_chrono
+#   error "__cpp_lib_chrono should be defined in c++2b"
+# endif
+# if __cpp_lib_chrono != 201611L
+#   error "__cpp_lib_chrono should have the value 201611L in c++2b"
+# endif
+
+# ifndef __cpp_lib_chrono_udls
+#   error "__cpp_lib_chrono_udls should be defined in c++2b"
+# endif
+# if __cpp_lib_chrono_udls != 201304L
+#   error "__cpp_lib_chrono_udls should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_clamp
+#   error "__cpp_lib_clamp should be defined in c++2b"
+# endif
+# if __cpp_lib_clamp != 201603L
+#   error "__cpp_lib_clamp should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_complex_udls
+#   error "__cpp_lib_complex_udls should be defined in c++2b"
+# endif
+# if __cpp_lib_complex_udls != 201309L
+#   error "__cpp_lib_complex_udls should have the value 201309L in c++2b"
+# endif
+
+# ifndef __cpp_lib_concepts
+#   error "__cpp_lib_concepts should be defined in c++2b"
+# endif
+# if __cpp_lib_concepts != 202002L
+#   error "__cpp_lib_concepts should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_algorithms
+#   error "__cpp_lib_constexpr_algorithms should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_algorithms != 201806L
+#   error "__cpp_lib_constexpr_algorithms should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_bitset
+#   error "__cpp_lib_constexpr_bitset should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_bitset != 202207L
+#   error "__cpp_lib_constexpr_bitset should have the value 202207L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_charconv
+#   error "__cpp_lib_constexpr_charconv should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_charconv != 202207L
+#   error "__cpp_lib_constexpr_charconv should have the value 202207L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_cmath
+#     error "__cpp_lib_constexpr_cmath should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_cmath != 202202L
+#     error "__cpp_lib_constexpr_cmath should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_cmath
+#     error "__cpp_lib_constexpr_cmath should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_constexpr_complex
+#   error "__cpp_lib_constexpr_complex should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_complex != 201711L
+#   error "__cpp_lib_constexpr_complex should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_dynamic_alloc
+#   error "__cpp_lib_constexpr_dynamic_alloc should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_dynamic_alloc != 201907L
+#   error "__cpp_lib_constexpr_dynamic_alloc should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_functional
+#   error "__cpp_lib_constexpr_functional should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_functional != 201907L
+#   error "__cpp_lib_constexpr_functional should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_iterator
+#   error "__cpp_lib_constexpr_iterator should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_iterator != 201811L
+#   error "__cpp_lib_constexpr_iterator should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_memory
+#   error "__cpp_lib_constexpr_memory should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_memory != 202202L
+#   error "__cpp_lib_constexpr_memory should have the value 202202L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_numeric
+#   error "__cpp_lib_constexpr_numeric should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_numeric != 201911L
+#   error "__cpp_lib_constexpr_numeric should have the value 201911L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_string
+#   error "__cpp_lib_constexpr_string should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_string != 201907L
+#   error "__cpp_lib_constexpr_string should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_string_view
+#   error "__cpp_lib_constexpr_string_view should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_string_view != 201811L
+#   error "__cpp_lib_constexpr_string_view should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_tuple
+#   error "__cpp_lib_constexpr_tuple should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_tuple != 201811L
+#   error "__cpp_lib_constexpr_tuple should have the value 201811L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_typeinfo != 202106L
+#     error "__cpp_lib_constexpr_typeinfo should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_constexpr_utility
+#   error "__cpp_lib_constexpr_utility should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_utility != 201811L
+#   error "__cpp_lib_constexpr_utility should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_constexpr_vector
+#   error "__cpp_lib_constexpr_vector should be defined in c++2b"
+# endif
+# if __cpp_lib_constexpr_vector != 201907L
+#   error "__cpp_lib_constexpr_vector should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_coroutine
+#   error "__cpp_lib_coroutine should be defined in c++2b"
+# endif
+# if __cpp_lib_coroutine != 201902L
+#   error "__cpp_lib_coroutine should have the value 201902L in c++2b"
+# endif
+
+# if TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L
+#   ifndef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should be defined in c++2b"
+#   endif
+#   if __cpp_lib_destroying_delete != 201806L
+#     error "__cpp_lib_destroying_delete should have the value 201806L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_destroying_delete
+#     error "__cpp_lib_destroying_delete should not be defined when the requirement 'TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_enable_shared_from_this
+#   error "__cpp_lib_enable_shared_from_this should be defined in c++2b"
+# endif
+# if __cpp_lib_enable_shared_from_this != 201603L
+#   error "__cpp_lib_enable_shared_from_this should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_endian
+#   error "__cpp_lib_endian should be defined in c++2b"
+# endif
+# if __cpp_lib_endian != 201907L
+#   error "__cpp_lib_endian should have the value 201907L in c++2b"
+# endif
+
+# ifndef __cpp_lib_erase_if
+#   error "__cpp_lib_erase_if should be defined in c++2b"
+# endif
+# if __cpp_lib_erase_if != 202002L
+#   error "__cpp_lib_erase_if should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_exchange_function
+#   error "__cpp_lib_exchange_function should be defined in c++2b"
+# endif
+# if __cpp_lib_exchange_function != 201304L
+#   error "__cpp_lib_exchange_function should have the value 201304L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_execution
+#     error "__cpp_lib_execution should be defined in c++2b"
+#   endif
+#   if __cpp_lib_execution != 201902L
+#     error "__cpp_lib_execution should have the value 201902L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_execution
+#     error "__cpp_lib_execution should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_expected
+#   error "__cpp_lib_expected should be defined in c++2b"
+# endif
+# if __cpp_lib_expected != 202202L
+#   error "__cpp_lib_expected should have the value 202202L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)
+#   ifndef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should be defined in c++2b"
+#   endif
+#   if __cpp_lib_filesystem != 201703L
+#     error "__cpp_lib_filesystem should have the value 201703L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_filesystem
+#     error "__cpp_lib_filesystem should not be defined when the requirement '!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_format
+#     error "__cpp_lib_format should be defined in c++2b"
+#   endif
+#   if __cpp_lib_format != 202106L
+#     error "__cpp_lib_format should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_format
+#     error "__cpp_lib_format should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_forward_like
+#   error "__cpp_lib_forward_like should be defined in c++2b"
+# endif
+# if __cpp_lib_forward_like != 202207L
+#   error "__cpp_lib_forward_like should have the value 202207L in c++2b"
+# endif
+
+# ifndef __cpp_lib_gcd_lcm
+#   error "__cpp_lib_gcd_lcm should be defined in c++2b"
+# endif
+# if __cpp_lib_gcd_lcm != 201606L
+#   error "__cpp_lib_gcd_lcm should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_generic_associative_lookup
+#   error "__cpp_lib_generic_associative_lookup should be defined in c++2b"
+# endif
+# if __cpp_lib_generic_associative_lookup != 201304L
+#   error "__cpp_lib_generic_associative_lookup should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_generic_unordered_lookup
+#   error "__cpp_lib_generic_unordered_lookup should be defined in c++2b"
+# endif
+# if __cpp_lib_generic_unordered_lookup != 201811L
+#   error "__cpp_lib_generic_unordered_lookup should have the value 201811L in c++2b"
+# endif
+
+# if defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)
+#   ifndef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should be defined in c++2b"
+#   endif
+#   if __cpp_lib_hardware_interference_size != 201703L
+#     error "__cpp_lib_hardware_interference_size should have the value 201703L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_hardware_interference_size
+#     error "__cpp_lib_hardware_interference_size should not be defined when the requirement 'defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_has_unique_object_representations
+#   error "__cpp_lib_has_unique_object_representations should be defined in c++2b"
+# endif
+# if __cpp_lib_has_unique_object_representations != 201606L
+#   error "__cpp_lib_has_unique_object_representations should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_hypot
+#   error "__cpp_lib_hypot should be defined in c++2b"
+# endif
+# if __cpp_lib_hypot != 201603L
+#   error "__cpp_lib_hypot should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_incomplete_container_elements
+#   error "__cpp_lib_incomplete_container_elements should be defined in c++2b"
+# endif
+# if __cpp_lib_incomplete_container_elements != 201505L
+#   error "__cpp_lib_incomplete_container_elements should have the value 201505L in c++2b"
+# endif
+
+# ifndef __cpp_lib_int_pow2
+#   error "__cpp_lib_int_pow2 should be defined in c++2b"
+# endif
+# if __cpp_lib_int_pow2 != 202002L
+#   error "__cpp_lib_int_pow2 should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_integer_comparison_functions
+#   error "__cpp_lib_integer_comparison_functions should be defined in c++2b"
+# endif
+# if __cpp_lib_integer_comparison_functions != 202002L
+#   error "__cpp_lib_integer_comparison_functions should have the value 202002L in c++2b"
+# endif
+
+# ifndef __cpp_lib_integer_sequence
+#   error "__cpp_lib_integer_sequence should be defined in c++2b"
+# endif
+# if __cpp_lib_integer_sequence != 201304L
+#   error "__cpp_lib_integer_sequence should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_integral_constant_callable
+#   error "__cpp_lib_integral_constant_callable should be defined in c++2b"
+# endif
+# if __cpp_lib_integral_constant_callable != 201304L
+#   error "__cpp_lib_integral_constant_callable should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_interpolate
+#   error "__cpp_lib_interpolate should be defined in c++2b"
+# endif
+# if __cpp_lib_interpolate != 201902L
+#   error "__cpp_lib_interpolate should have the value 201902L in c++2b"
+# endif
+
+# ifndef __cpp_lib_invoke
+#   error "__cpp_lib_invoke should be defined in c++2b"
+# endif
+# if __cpp_lib_invoke != 201411L
+#   error "__cpp_lib_invoke should have the value 201411L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should be defined in c++2b"
+#   endif
+#   if __cpp_lib_invoke_r != 202106L
+#     error "__cpp_lib_invoke_r should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_aggregate
+#   error "__cpp_lib_is_aggregate should be defined in c++2b"
+# endif
+# if __cpp_lib_is_aggregate != 201703L
+#   error "__cpp_lib_is_aggregate should have the value 201703L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_constant_evaluated
+#   error "__cpp_lib_is_constant_evaluated should be defined in c++2b"
+# endif
+# if __cpp_lib_is_constant_evaluated != 201811L
+#   error "__cpp_lib_is_constant_evaluated should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_final
+#   error "__cpp_lib_is_final should be defined in c++2b"
+# endif
+# if __cpp_lib_is_final != 201402L
+#   error "__cpp_lib_is_final should have the value 201402L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_invocable
+#   error "__cpp_lib_is_invocable should be defined in c++2b"
+# endif
+# if __cpp_lib_is_invocable != 201703L
+#   error "__cpp_lib_is_invocable should have the value 201703L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should be defined in c++2b"
+#   endif
+#   if __cpp_lib_is_layout_compatible != 201907L
+#     error "__cpp_lib_is_layout_compatible should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_layout_compatible
+#     error "__cpp_lib_is_layout_compatible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_nothrow_convertible
+#   error "__cpp_lib_is_nothrow_convertible should be defined in c++2b"
+# endif
+# if __cpp_lib_is_nothrow_convertible != 201806L
+#   error "__cpp_lib_is_nothrow_convertible should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_null_pointer
+#   error "__cpp_lib_is_null_pointer should be defined in c++2b"
+# endif
+# if __cpp_lib_is_null_pointer != 201309L
+#   error "__cpp_lib_is_null_pointer should have the value 201309L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should be defined in c++2b"
+#   endif
+#   if __cpp_lib_is_pointer_interconvertible != 201907L
+#     error "__cpp_lib_is_pointer_interconvertible should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_is_pointer_interconvertible
+#     error "__cpp_lib_is_pointer_interconvertible should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_is_scoped_enum
+#   error "__cpp_lib_is_scoped_enum should be defined in c++2b"
+# endif
+# if __cpp_lib_is_scoped_enum != 202011L
+#   error "__cpp_lib_is_scoped_enum should have the value 202011L in c++2b"
+# endif
+
+# ifndef __cpp_lib_is_swappable
+#   error "__cpp_lib_is_swappable should be defined in c++2b"
+# endif
+# if __cpp_lib_is_swappable != 201603L
+#   error "__cpp_lib_is_swappable should have the value 201603L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should be defined in c++2b"
+#   endif
+#   if __cpp_lib_jthread != 201911L
+#     error "__cpp_lib_jthread should have the value 201911L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_jthread
+#     error "__cpp_lib_jthread should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)
+#   ifndef __cpp_lib_latch
+#     error "__cpp_lib_latch should be defined in c++2b"
+#   endif
+#   if __cpp_lib_latch != 201907L
+#     error "__cpp_lib_latch should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_latch
+#     error "__cpp_lib_latch should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_launder
+#   error "__cpp_lib_launder should be defined in c++2b"
+# endif
+# if __cpp_lib_launder != 201606L
+#   error "__cpp_lib_launder should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_list_remove_return_type
+#   error "__cpp_lib_list_remove_return_type should be defined in c++2b"
+# endif
+# if __cpp_lib_list_remove_return_type != 201806L
+#   error "__cpp_lib_list_remove_return_type should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_logical_traits
+#   error "__cpp_lib_logical_traits should be defined in c++2b"
+# endif
+# if __cpp_lib_logical_traits != 201510L
+#   error "__cpp_lib_logical_traits should have the value 201510L in c++2b"
+# endif
+
+# ifndef __cpp_lib_make_from_tuple
+#   error "__cpp_lib_make_from_tuple should be defined in c++2b"
+# endif
+# if __cpp_lib_make_from_tuple != 201606L
+#   error "__cpp_lib_make_from_tuple should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_make_reverse_iterator
+#   error "__cpp_lib_make_reverse_iterator should be defined in c++2b"
+# endif
+# if __cpp_lib_make_reverse_iterator != 201402L
+#   error "__cpp_lib_make_reverse_iterator should have the value 201402L in c++2b"
+# endif
+
+# ifndef __cpp_lib_make_unique
+#   error "__cpp_lib_make_unique should be defined in c++2b"
+# endif
+# if __cpp_lib_make_unique != 201304L
+#   error "__cpp_lib_make_unique should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_map_try_emplace
+#   error "__cpp_lib_map_try_emplace should be defined in c++2b"
+# endif
+# if __cpp_lib_map_try_emplace != 201411L
+#   error "__cpp_lib_map_try_emplace should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_math_constants
+#   error "__cpp_lib_math_constants should be defined in c++2b"
+# endif
+# if __cpp_lib_math_constants != 201907L
+#   error "__cpp_lib_math_constants should have the value 201907L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should be defined in c++2b"
+#   endif
+#   if __cpp_lib_math_special_functions != 201603L
+#     error "__cpp_lib_math_special_functions should have the value 201603L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_math_special_functions
+#     error "__cpp_lib_math_special_functions should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_memory_resource
+#   error "__cpp_lib_memory_resource should be defined in c++2b"
+# endif
+# if __cpp_lib_memory_resource != 201603L
+#   error "__cpp_lib_memory_resource should have the value 201603L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should be defined in c++2b"
+#   endif
+#   if __cpp_lib_move_only_function != 202110L
+#     error "__cpp_lib_move_only_function should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_node_extract
+#   error "__cpp_lib_node_extract should be defined in c++2b"
+# endif
+# if __cpp_lib_node_extract != 201606L
+#   error "__cpp_lib_node_extract should have the value 201606L in c++2b"
+# endif
+
+# ifndef __cpp_lib_nonmember_container_access
+#   error "__cpp_lib_nonmember_container_access should be defined in c++2b"
+# endif
+# if __cpp_lib_nonmember_container_access != 201411L
+#   error "__cpp_lib_nonmember_container_access should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_not_fn
+#   error "__cpp_lib_not_fn should be defined in c++2b"
+# endif
+# if __cpp_lib_not_fn != 201603L
+#   error "__cpp_lib_not_fn should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_null_iterators
+#   error "__cpp_lib_null_iterators should be defined in c++2b"
+# endif
+# if __cpp_lib_null_iterators != 201304L
+#   error "__cpp_lib_null_iterators should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_optional
+#   error "__cpp_lib_optional should be defined in c++2b"
+# endif
+# if __cpp_lib_optional != 202110L
+#   error "__cpp_lib_optional should have the value 202110L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should be defined in c++2b"
+#   endif
+#   if __cpp_lib_out_ptr != 202106L
+#     error "__cpp_lib_out_ptr should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should be defined in c++2b"
+#   endif
+#   if __cpp_lib_parallel_algorithm != 201603L
+#     error "__cpp_lib_parallel_algorithm should have the value 201603L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_parallel_algorithm
+#     error "__cpp_lib_parallel_algorithm should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_polymorphic_allocator
+#   error "__cpp_lib_polymorphic_allocator should be defined in c++2b"
+# endif
+# if __cpp_lib_polymorphic_allocator != 201902L
+#   error "__cpp_lib_polymorphic_allocator should have the value 201902L in c++2b"
+# endif
+
+# ifndef __cpp_lib_quoted_string_io
+#   error "__cpp_lib_quoted_string_io should be defined in c++2b"
+# endif
+# if __cpp_lib_quoted_string_io != 201304L
+#   error "__cpp_lib_quoted_string_io should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_ranges
+#   error "__cpp_lib_ranges should be defined in c++2b"
+# endif
+# if __cpp_lib_ranges != 202106L
+#   error "__cpp_lib_ranges should have the value 202106L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_chunk
+#     error "__cpp_lib_ranges_chunk should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_chunk != 202202L
+#     error "__cpp_lib_ranges_chunk should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_chunk
+#     error "__cpp_lib_ranges_chunk should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_chunk_by
+#     error "__cpp_lib_ranges_chunk_by should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_chunk_by != 202202L
+#     error "__cpp_lib_ranges_chunk_by should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_chunk_by
+#     error "__cpp_lib_ranges_chunk_by should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_iota
+#     error "__cpp_lib_ranges_iota should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_iota != 202202L
+#     error "__cpp_lib_ranges_iota should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_iota
+#     error "__cpp_lib_ranges_iota should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_join_with
+#     error "__cpp_lib_ranges_join_with should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_join_with != 202202L
+#     error "__cpp_lib_ranges_join_with should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_join_with
+#     error "__cpp_lib_ranges_join_with should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_slide
+#     error "__cpp_lib_ranges_slide should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_slide != 202202L
+#     error "__cpp_lib_ranges_slide should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_slide
+#     error "__cpp_lib_ranges_slide should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_starts_ends_with != 202106L
+#     error "__cpp_lib_ranges_starts_ends_with should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_to_container != 202202L
+#     error "__cpp_lib_ranges_to_container should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_to_container
+#     error "__cpp_lib_ranges_to_container should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_raw_memory_algorithms
+#   error "__cpp_lib_raw_memory_algorithms should be defined in c++2b"
+# endif
+# if __cpp_lib_raw_memory_algorithms != 201606L
+#   error "__cpp_lib_raw_memory_algorithms should have the value 201606L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_reference_from_temporary
+#     error "__cpp_lib_reference_from_temporary should be defined in c++2b"
+#   endif
+#   if __cpp_lib_reference_from_temporary != 202202L
+#     error "__cpp_lib_reference_from_temporary should have the value 202202L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_reference_from_temporary
+#     error "__cpp_lib_reference_from_temporary should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_remove_cvref
+#   error "__cpp_lib_remove_cvref should be defined in c++2b"
+# endif
+# if __cpp_lib_remove_cvref != 201711L
+#   error "__cpp_lib_remove_cvref should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_result_of_sfinae
+#   error "__cpp_lib_result_of_sfinae should be defined in c++2b"
+# endif
+# if __cpp_lib_result_of_sfinae != 201210L
+#   error "__cpp_lib_result_of_sfinae should have the value 201210L in c++2b"
+# endif
+
+# ifndef __cpp_lib_robust_nonmodifying_seq_ops
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++2b"
+# endif
+# if __cpp_lib_robust_nonmodifying_seq_ops != 201304L
+#   error "__cpp_lib_robust_nonmodifying_seq_ops should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_sample
+#   error "__cpp_lib_sample should be defined in c++2b"
+# endif
+# if __cpp_lib_sample != 201603L
+#   error "__cpp_lib_sample should have the value 201603L in c++2b"
+# endif
+
+# ifndef __cpp_lib_scoped_lock
+#   error "__cpp_lib_scoped_lock should be defined in c++2b"
+# endif
+# if __cpp_lib_scoped_lock != 201703L
+#   error "__cpp_lib_scoped_lock should have the value 201703L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)
+#   ifndef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should be defined in c++2b"
+#   endif
+#   if __cpp_lib_semaphore != 201907L
+#     error "__cpp_lib_semaphore should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_semaphore
+#     error "__cpp_lib_semaphore should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)' is not met!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)
+#   ifndef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should be defined in c++2b"
+#   endif
+#   if __cpp_lib_shared_mutex != 201505L
+#     error "__cpp_lib_shared_mutex should have the value 201505L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_mutex
+#     error "__cpp_lib_shared_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_shared_ptr_arrays
+#   error "__cpp_lib_shared_ptr_arrays should be defined in c++2b"
+# endif
+# if __cpp_lib_shared_ptr_arrays != 201707L
+#   error "__cpp_lib_shared_ptr_arrays should have the value 201707L in c++2b"
+# endif
+
+# ifndef __cpp_lib_shared_ptr_weak_type
+#   error "__cpp_lib_shared_ptr_weak_type should be defined in c++2b"
+# endif
+# if __cpp_lib_shared_ptr_weak_type != 201606L
+#   error "__cpp_lib_shared_ptr_weak_type should have the value 201606L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)
+#   ifndef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should be defined in c++2b"
+#   endif
+#   if __cpp_lib_shared_timed_mutex != 201402L
+#     error "__cpp_lib_shared_timed_mutex should have the value 201402L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_shared_timed_mutex
+#     error "__cpp_lib_shared_timed_mutex should not be defined when the requirement '!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_shift
+#   error "__cpp_lib_shift should be defined in c++2b"
+# endif
+# if __cpp_lib_shift != 201806L
+#   error "__cpp_lib_shift should have the value 201806L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should be defined in c++2b"
+#   endif
+#   if __cpp_lib_smart_ptr_for_overwrite != 202002L
+#     error "__cpp_lib_smart_ptr_for_overwrite should have the value 202002L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_smart_ptr_for_overwrite
+#     error "__cpp_lib_smart_ptr_for_overwrite should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if __has_builtin(__builtin_source_location)
+#   ifndef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should be defined in c++2b"
+#   endif
+#   if __cpp_lib_source_location != 201907L
+#     error "__cpp_lib_source_location should have the value 201907L in c++2b"
+#   endif
+# else
+#   ifdef __cpp_lib_source_location
+#     error "__cpp_lib_source_location should not be defined when the requirement '__has_builtin(__builtin_source_location)' is not met!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_span
+#   error "__cpp_lib_span should be defined in c++2b"
+# endif
+# if __cpp_lib_span != 202002L
+#   error "__cpp_lib_span should have the value 202002L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_spanstream
+#     error "__cpp_lib_spanstream should be defined in c++2b"
+#   endif
+#   if __cpp_lib_spanstream != 202106L
+#     error "__cpp_lib_spanstream should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_spanstream
+#     error "__cpp_lib_spanstream should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_ssize
+#   error "__cpp_lib_ssize should be defined in c++2b"
+# endif
+# if __cpp_lib_ssize != 201902L
+#   error "__cpp_lib_ssize should have the value 201902L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_stacktrace
+#     error "__cpp_lib_stacktrace should be defined in c++2b"
+#   endif
+#   if __cpp_lib_stacktrace != 202011L
+#     error "__cpp_lib_stacktrace should have the value 202011L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_stacktrace
+#     error "__cpp_lib_stacktrace should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_starts_ends_with
+#   error "__cpp_lib_starts_ends_with should be defined in c++2b"
+# endif
+# if __cpp_lib_starts_ends_with != 201711L
+#   error "__cpp_lib_starts_ends_with should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_stdatomic_h
+#   error "__cpp_lib_stdatomic_h should be defined in c++2b"
+# endif
+# if __cpp_lib_stdatomic_h != 202011L
+#   error "__cpp_lib_stdatomic_h should have the value 202011L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_contains
+#   error "__cpp_lib_string_contains should be defined in c++2b"
+# endif
+# if __cpp_lib_string_contains != 202011L
+#   error "__cpp_lib_string_contains should have the value 202011L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_resize_and_overwrite
+#   error "__cpp_lib_string_resize_and_overwrite should be defined in c++2b"
+# endif
+# if __cpp_lib_string_resize_and_overwrite != 202110L
+#   error "__cpp_lib_string_resize_and_overwrite should have the value 202110L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_udls
+#   error "__cpp_lib_string_udls should be defined in c++2b"
+# endif
+# if __cpp_lib_string_udls != 201304L
+#   error "__cpp_lib_string_udls should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_string_view
+#   error "__cpp_lib_string_view should be defined in c++2b"
+# endif
+# if __cpp_lib_string_view != 201803L
+#   error "__cpp_lib_string_view should have the value 201803L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_syncbuf
+#     error "__cpp_lib_syncbuf should be defined in c++2b"
+#   endif
+#   if __cpp_lib_syncbuf != 201803L
+#     error "__cpp_lib_syncbuf should have the value 201803L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_syncbuf
+#     error "__cpp_lib_syncbuf should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should be defined in c++2b"
+#   endif
+#   if __cpp_lib_three_way_comparison != 201907L
+#     error "__cpp_lib_three_way_comparison should have the value 201907L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_three_way_comparison
+#     error "__cpp_lib_three_way_comparison should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_to_address
+#   error "__cpp_lib_to_address should be defined in c++2b"
+# endif
+# if __cpp_lib_to_address != 201711L
+#   error "__cpp_lib_to_address should have the value 201711L in c++2b"
+# endif
+
+# ifndef __cpp_lib_to_array
+#   error "__cpp_lib_to_array should be defined in c++2b"
+# endif
+# if __cpp_lib_to_array != 201907L
+#   error "__cpp_lib_to_array should have the value 201907L in c++2b"
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should be defined in c++2b"
+#   endif
+#   if __cpp_lib_to_chars != 201611L
+#     error "__cpp_lib_to_chars should have the value 201611L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_to_chars
+#     error "__cpp_lib_to_chars should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# ifndef __cpp_lib_to_underlying
+#   error "__cpp_lib_to_underlying should be defined in c++2b"
+# endif
+# if __cpp_lib_to_underlying != 202102L
+#   error "__cpp_lib_to_underlying should have the value 202102L in c++2b"
+# endif
+
+# ifndef __cpp_lib_transformation_trait_aliases
+#   error "__cpp_lib_transformation_trait_aliases should be defined in c++2b"
+# endif
+# if __cpp_lib_transformation_trait_aliases != 201304L
+#   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_transparent_operators
+#   error "__cpp_lib_transparent_operators should be defined in c++2b"
+# endif
+# if __cpp_lib_transparent_operators != 201510L
+#   error "__cpp_lib_transparent_operators should have the value 201510L in c++2b"
+# endif
+
+# ifndef __cpp_lib_tuple_element_t
+#   error "__cpp_lib_tuple_element_t should be defined in c++2b"
+# endif
+# if __cpp_lib_tuple_element_t != 201402L
+#   error "__cpp_lib_tuple_element_t should have the value 201402L in c++2b"
+# endif
+
+# ifndef __cpp_lib_tuples_by_type
+#   error "__cpp_lib_tuples_by_type should be defined in c++2b"
+# endif
+# if __cpp_lib_tuples_by_type != 201304L
+#   error "__cpp_lib_tuples_by_type should have the value 201304L in c++2b"
+# endif
+
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++2b"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++2b"
+# endif
+
+# ifndef __cpp_lib_type_trait_variable_templates
+#   error "__cpp_lib_type_trait_variable_templates should be defined in c++2b"
+# endif
+# if __cpp_lib_type_trait_variable_templates != 201510L
+#   error "__cpp_lib_type_trait_variable_templates should have the value 201510L in c++2b"
+# endif
+
+# ifndef __cpp_lib_uncaught_exceptions
+#   error "__cpp_lib_uncaught_exceptions should be defined in c++2b"
+# endif
+# if __cpp_lib_uncaught_exceptions != 201411L
+#   error "__cpp_lib_uncaught_exceptions should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_unordered_map_try_emplace
+#   error "__cpp_lib_unordered_map_try_emplace should be defined in c++2b"
+# endif
+# if __cpp_lib_unordered_map_try_emplace != 201411L
+#   error "__cpp_lib_unordered_map_try_emplace should have the value 201411L in c++2b"
+# endif
+
+# ifndef __cpp_lib_unreachable
+#   error "__cpp_lib_unreachable should be defined in c++2b"
+# endif
+# if __cpp_lib_unreachable != 202202L
+#   error "__cpp_lib_unreachable should have the value 202202L in c++2b"
+# endif
+
+# ifndef __cpp_lib_unwrap_ref
+#   error "__cpp_lib_unwrap_ref should be defined in c++2b"
+# endif
+# if __cpp_lib_unwrap_ref != 201811L
+#   error "__cpp_lib_unwrap_ref should have the value 201811L in c++2b"
+# endif
+
+# ifndef __cpp_lib_variant
+#   error "__cpp_lib_variant should be defined in c++2b"
+# endif
+# if __cpp_lib_variant != 202102L
+#   error "__cpp_lib_variant should have the value 202102L in c++2b"
+# endif
+
+# ifndef __cpp_lib_void_t
+#   error "__cpp_lib_void_t should be defined in c++2b"
+# endif
+# if __cpp_lib_void_t != 201411L
+#   error "__cpp_lib_void_t should have the value 201411L in c++2b"
+# endif
+
+#endif // TEST_STD_VER > 20
+
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.limits/version.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/version.pass.cpp
new file mode 100644
index 0000000..258a74a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.limits/version.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <version>
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <version>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/bad.cast/bad_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/bad.cast/bad_cast.pass.cpp
new file mode 100644
index 0000000..5614752
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/bad.cast/bad_cast.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test bad_cast
+
+#include <typeinfo>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::bad_cast>::value),
+                 "std::is_base_of<std::exception, std::bad_cast>::value");
+    static_assert(std::is_polymorphic<std::bad_cast>::value,
+                 "std::is_polymorphic<std::bad_cast>::value");
+    std::bad_cast b;
+    std::bad_cast b2 = b;
+    b2 = b;
+    const char* w = b2.what();
+    assert(w);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/bad.typeid/bad_typeid.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/bad.typeid/bad_typeid.pass.cpp
new file mode 100644
index 0000000..a9097af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/bad.typeid/bad_typeid.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test bad_typeid
+
+#include <typeinfo>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::bad_typeid>::value),
+                 "std::is_base_of<std::exception, std::bad_typeid>::value");
+    static_assert(std::is_polymorphic<std::bad_typeid>::value,
+                 "std::is_polymorphic<std::bad_typeid>::value");
+    std::bad_typeid b;
+    std::bad_typeid b2 = b;
+    b2 = b;
+    const char* w = b2.what();
+    assert(w);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/type.info/type_info.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/type.info/type_info.pass.cpp
new file mode 100644
index 0000000..2422db6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/type.info/type_info.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test type_info
+
+// UNSUPPORTED: no-rtti
+
+#include <typeinfo>
+#include <string>
+#include <cstring>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool test_constructor_explicit(std::type_info const&) { return false; }
+bool test_constructor_explicit(std::string const&) { return true; }
+
+int main(int, char**)
+{
+  {
+    const std::type_info& t1 = typeid(int);
+    const std::type_info& t2 = typeid(int);
+    assert(t1 == t2);
+    const std::type_info& t3 = typeid(short);
+    assert(t1 != t3);
+    assert(!t1.before(t2));
+    assert(std::strcmp(t1.name(), t2.name()) == 0);
+    assert(std::strcmp(t1.name(), t3.name()) != 0);
+  }
+  {
+    // type_info has a protected constructor taking a string literal. This
+    // constructor is not intended for users. However it still participates
+    // in overload resolution, so we need to ensure that it is marked explicit
+    // to avoid ambiguous conversions.
+    // See: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216201
+    assert(test_constructor_explicit("abc"));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/type.info/type_info_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/type.info/type_info_hash.pass.cpp
new file mode 100644
index 0000000..f173495
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.rtti/type.info/type_info_hash.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test type_info
+
+// UNSUPPORTED: no-rtti
+
+#include <typeinfo>
+#include <cstring>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::type_info& t1 = typeid(int);
+    const std::type_info& t2 = typeid(int);
+    const std::type_info& t3 = typeid(short);
+    assert(t1.hash_code() == t2.hash_code());
+    assert(t1.hash_code() != t3.hash_code());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/csetjmp.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/csetjmp.pass.cpp
new file mode 100644
index 0000000..0e3d8f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/csetjmp.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <csetjmp>
+
+#include <csetjmp>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef setjmp
+#error setjmp not defined
+#endif
+
+int main(int, char**)
+{
+    std::jmp_buf jb;
+    ((void)jb); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::longjmp(jb, 0)), void>::value),
+                  "std::is_same<decltype(std::longjmp(jb, 0)), void>::value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/csignal.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/csignal.pass.cpp
new file mode 100644
index 0000000..4548d34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/csignal.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <csignal>
+
+#include <csignal>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef SIG_DFL
+#error SIG_DFL not defined
+#endif
+
+#ifndef SIG_ERR
+#error SIG_ERR not defined
+#endif
+
+#ifndef SIG_IGN
+#error SIG_IGN not defined
+#endif
+
+#ifndef SIGABRT
+#error SIGABRT not defined
+#endif
+
+#ifndef SIGFPE
+#error SIGFPE not defined
+#endif
+
+#ifndef SIGILL
+#error SIGILL not defined
+#endif
+
+#ifndef SIGINT
+#error SIGINT not defined
+#endif
+
+#ifndef SIGSEGV
+#error SIGSEGV not defined
+#endif
+
+#ifndef SIGTERM
+#error SIGTERM not defined
+#endif
+
+int main(int, char**)
+{
+    std::sig_atomic_t sig = 0;
+    ((void)sig);
+    typedef void (*func)(int);
+    static_assert((std::is_same<decltype(std::signal(0, (func)0)), func>::value), "");
+    static_assert((std::is_same<decltype(std::raise(0)), int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdarg.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdarg.pass.cpp
new file mode 100644
index 0000000..8d7fd70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdarg.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cstdarg>
+
+#include <cstdarg>
+
+#include "test_macros.h"
+
+#ifndef va_arg
+#error va_arg not defined
+#endif
+
+#if TEST_STD_VER >= 11
+#  ifndef va_copy
+#    error va_copy is not defined when c++ >= 11
+#  endif
+#endif
+
+#ifndef va_end
+#error va_end not defined
+#endif
+
+#ifndef va_start
+#error va_start not defined
+#endif
+
+int main(int, char**)
+{
+    std::va_list va;
+    ((void)va);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdbool.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdbool.pass.cpp
new file mode 100644
index 0000000..1d0e9b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdbool.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cstdbool>
+
+#include <cstdbool>
+
+#include "test_macros.h"
+
+#ifndef __bool_true_false_are_defined
+#error __bool_true_false_are_defined not defined
+#endif
+
+#ifdef bool
+#error bool should not be defined
+#endif
+
+#ifdef true
+#error true should not be defined
+#endif
+
+#ifdef false
+#error false should not be defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdlib.aligned_alloc.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdlib.aligned_alloc.compile.pass.cpp
new file mode 100644
index 0000000..f6681db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdlib.aligned_alloc.compile.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cstdlib>
+// std::aligned_alloc
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ::aligned_alloc is provided by the C library, but it's marked as unavailable
+// until macOS 10.15
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// ::aligned_alloc is not implemented on Windows
+// XFAIL: target={{.+}}-windows-{{.+}}
+
+// ::aligned_alloc is available starting with Android P (API 28)
+// XFAIL: target={{.+}}-android{{(eabi)?(21|22|23|24|25|26|27)}}
+
+#include <cstdlib>
+#include <type_traits>
+
+static_assert(std::is_same<decltype(std::aligned_alloc(1, 0)), void*>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp
new file mode 100644
index 0000000..c4c8ddd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <cstdlib>
+
+#include <cstdlib>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef EXIT_FAILURE
+#error EXIT_FAILURE not defined
+#endif
+
+#ifndef EXIT_SUCCESS
+#error EXIT_SUCCESS not defined
+#endif
+
+#ifndef MB_CUR_MAX
+#error MB_CUR_MAX not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef RAND_MAX
+#error RAND_MAX not defined
+#endif
+
+template <class TestType, class IntType>
+void test_div_struct() {
+    TestType obj;
+    static_assert(sizeof(obj) >= sizeof(IntType) * 2, ""); // >= to account for alignment.
+    static_assert((std::is_same<decltype(obj.quot), IntType>::value), "");
+    static_assert((std::is_same<decltype(obj.rem), IntType>::value), "");
+    ((void) obj);
+};
+
+template <class T, class = decltype(std::abs(std::declval<T>()))>
+std::true_type has_abs_imp(int);
+template <class T>
+std::false_type has_abs_imp(...);
+
+template <class T>
+struct has_abs : decltype(has_abs_imp<T>(0)) {};
+
+void test_abs() {
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
+    static_assert((std::is_same<decltype(std::abs((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::abs((double)0)), double>::value), "");
+    static_assert(
+        (std::is_same<decltype(std::abs((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::abs((int)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value),
+                  "");
+    static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value),
+                  "");
+    static_assert((std::is_same<decltype(std::abs((unsigned short)0)), int>::value),
+                  "");
+    static_assert((std::is_same<decltype(std::abs((signed char)0)), int>::value),
+                  "");
+    static_assert((std::is_same<decltype(std::abs((short)0)), int>::value),
+                  "");
+    static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value),
+                  "");
+    static_assert((std::is_same<decltype(std::abs((char)0)), int>::value),
+                  "");
+
+    static_assert(!has_abs<unsigned>::value, "");
+    static_assert(!has_abs<unsigned long>::value, "");
+    static_assert(!has_abs<unsigned long long>::value, "");
+    static_assert(!has_abs<size_t>::value, "");
+
+    TEST_DIAGNOSTIC_POP
+
+    assert(std::abs(-1.) == 1);
+}
+
+int main(int, char**)
+{
+    std::size_t s = 0;
+    ((void)s);
+    static_assert((std::is_same<std::size_t, decltype(sizeof(int))>::value), "");
+    test_div_struct<std::div_t, int>();
+    test_div_struct<std::ldiv_t, long>();
+    test_div_struct<std::lldiv_t, long long>();
+    char** endptr = 0;
+    static_assert((std::is_same<decltype(std::atof("")), double>::value), "");
+    static_assert((std::is_same<decltype(std::atoi("")), int>::value), "");
+    static_assert((std::is_same<decltype(std::atol("")), long>::value), "");
+    static_assert((std::is_same<decltype(std::atoll("")), long long>::value), "");
+    static_assert((std::is_same<decltype(std::getenv("")), char*>::value), "");
+    static_assert((std::is_same<decltype(std::strtod("", endptr)), double>::value), "");
+    static_assert((std::is_same<decltype(std::strtof("", endptr)), float>::value), "");
+    static_assert((std::is_same<decltype(std::strtold("", endptr)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::strtol("", endptr,0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::strtoll("", endptr,0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::strtoul("", endptr,0)), unsigned long>::value), "");
+    static_assert((std::is_same<decltype(std::strtoull("", endptr,0)), unsigned long long>::value), "");
+    static_assert((std::is_same<decltype(std::rand()), int>::value), "");
+    static_assert((std::is_same<decltype(std::srand(0)), void>::value), "");
+
+    // std::aligned_alloc tested in cstdlib.aligned_alloc.compile.pass.cpp
+
+    void* pv = 0;
+    void (*handler)() = 0;
+    int (*comp)(void const*, void const*) = 0;
+    static_assert((std::is_same<decltype(std::calloc(0,0)), void*>::value), "");
+    static_assert((std::is_same<decltype(std::free(0)), void>::value), "");
+    static_assert((std::is_same<decltype(std::malloc(0)), void*>::value), "");
+    static_assert((std::is_same<decltype(std::realloc(0,0)), void*>::value), "");
+    static_assert((std::is_same<decltype(std::abort()), void>::value), "");
+    static_assert((std::is_same<decltype(std::atexit(handler)), int>::value), "");
+    static_assert((std::is_same<decltype(std::exit(0)), void>::value), "");
+    static_assert((std::is_same<decltype(std::_Exit(0)), void>::value), "");
+    static_assert((std::is_same<decltype(std::getenv("")), char*>::value), "");
+    static_assert((std::is_same<decltype(std::system("")), int>::value), "");
+    static_assert((std::is_same<decltype(std::bsearch(pv,pv,0,0,comp)), void*>::value), "");
+    static_assert((std::is_same<decltype(std::qsort(pv,0,0,comp)), void>::value), "");
+    static_assert((std::is_same<decltype(std::abs(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::labs((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::llabs((long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::div(0,0)), std::div_t>::value), "");
+    static_assert((std::is_same<decltype(std::div(0L,0L)), std::ldiv_t>::value), "");
+    static_assert((std::is_same<decltype(std::div(0LL,0LL)), std::lldiv_t>::value), "");
+    static_assert((std::is_same<decltype(std::ldiv(0L,0L)), std::ldiv_t>::value), "");
+    static_assert((std::is_same<decltype(std::lldiv(0LL,0LL)), std::lldiv_t>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    wchar_t* pw = 0;
+    const wchar_t* pwc = 0;
+    char* pc = 0;
+    static_assert((std::is_same<decltype(std::mblen("",0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::mbtowc(pw,"",0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::wctomb(pc,L' ')), int>::value), "");
+    static_assert((std::is_same<decltype(std::mbstowcs(pw,"",0)), std::size_t>::value), "");
+    static_assert((std::is_same<decltype(std::wcstombs(pc,pwc,0)), std::size_t>::value), "");
+#endif
+
+    test_abs();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp
new file mode 100644
index 0000000..3561933
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/ctime.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <ctime>
+
+#include <ctime>
+#include <type_traits>
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef CLOCKS_PER_SEC
+#error CLOCKS_PER_SEC not defined
+#endif
+
+int main(int, char**)
+{
+    std::clock_t c = 0;
+    std::size_t s = 0;
+    std::time_t t = 0;
+    std::tm tm = {};
+    // std::timespec and std::timespec_get tested in ctime.timespec.compile.pass.cpp
+    ((void)c); // Prevent unused warning
+    ((void)s); // Prevent unused warning
+    ((void)t); // Prevent unused warning
+    ((void)tm); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), "");
+    static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), "");
+    static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), "");
+    static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), "");
+    static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), "");
+    static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), "");
+    static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), "");
+    static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), "");
+    char* c1 = 0;
+    const char* c2 = 0;
+    ((void)c1); // Prevent unused warning
+    ((void)c2); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::strftime(c1,s,c2,&tm)), std::size_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/ctime.timespec.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/ctime.timespec.compile.pass.cpp
new file mode 100644
index 0000000..37c7b67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.runtime/ctime.timespec.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test <ctime>
+// std::timespec and std::timespec_get
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// ::timespec_get is provided by the C library, but it's marked as
+// unavailable until macOS 10.15
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// ::timespec_get is available starting with Android Q (API 29)
+// XFAIL: target={{.+}}-android{{(eabi)?(21|22|23|24|25|26|27|28)}}
+
+#include <ctime>
+#include <type_traits>
+
+#ifndef TIME_UTC
+#error TIME_UTC not defined
+#endif
+
+std::timespec tmspec = {};
+static_assert(std::is_same<decltype(std::timespec_get(&tmspec, 0)), int>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.srcloc/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.srcloc/general.pass.cpp
new file mode 100644
index 0000000..39ad936
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.srcloc/general.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: clang-14, clang-15
+// UNSUPPORTED: apple-clang-14
+
+#include <source_location>
+
+#include <cassert>
+#include <concepts>
+#include <cstdint>
+#include <cstring>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_nothrow_move_constructible_v<std::source_location>, "support.srcloc.cons (1.1)");
+static_assert(std::is_nothrow_move_assignable_v<std::source_location>, "support.srcloc.cons (1.2)");
+static_assert(std::is_nothrow_swappable_v<std::source_location>, "support.srcloc.cons (1.3)");
+
+ASSERT_NOEXCEPT(std::source_location());
+ASSERT_NOEXCEPT(std::source_location::current());
+
+// Note: the standard doesn't strictly require the particular values asserted
+// here, but does "suggest" them.  Additional tests for details of how the
+// implementation of current() chooses which location to report for more complex
+// scenarios are in the Clang test-suite, and not replicated here.
+
+// A default-constructed value.
+constexpr std::source_location empty;
+static_assert(empty.line() == 0);
+static_assert(empty.column() == 0);
+static_assert(empty.file_name()[0] == '\0');
+static_assert(empty.function_name()[0] == '\0');
+
+ASSERT_NOEXCEPT(empty.line());
+ASSERT_NOEXCEPT(empty.column());
+ASSERT_NOEXCEPT(empty.file_name());
+ASSERT_NOEXCEPT(empty.function_name());
+std::same_as<uint_least32_t> auto line   = empty.line();
+std::same_as<uint_least32_t> auto column = empty.column();
+std::same_as<const char*> auto file      = empty.file_name();
+std::same_as<const char*> auto function  = empty.function_name();
+
+// A simple use of current() outside a function.
+constexpr std::source_location cur =
+#line 1000 "ss"
+    std::source_location::current();
+static_assert(cur.line() == 1000);
+static_assert(cur.column() > 0);
+static_assert(cur.file_name()[0] == 's' && cur.file_name()[1] == 's' && cur.file_name()[2] == '\0');
+static_assert(cur.function_name()[0] == '\0');
+
+// and inside a function.
+int main(int, char**) {
+  auto local =
+#line 2000
+      std::source_location::current();
+  assert(strcmp(local.file_name(), "ss") == 0);
+  assert(strstr(local.function_name(), "main") != nullptr);
+  assert(local.line() == 2000);
+  assert(local.column() > 0);
+
+  // Finally, the type should be copy-constructible
+  auto local2 = cur;
+  assert(strcmp(local2.file_name(), cur.file_name()) == 0);
+  assert(strcmp(local2.function_name(), cur.function_name()) == 0);
+  assert(local2.line() == cur.line());
+  assert(local2.column() == cur.column());
+
+  // and copy-assignable.
+  local = cur;
+  assert(strcmp(local.file_name(), cur.file_name()) == 0);
+  assert(strcmp(local.function_name(), cur.function_name()) == 0);
+  assert(local.line() == cur.line());
+  assert(local.column() == cur.column());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.start.term/quick_exit.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.start.term/quick_exit.pass.cpp
new file mode 100644
index 0000000..5a70ea5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.start.term/quick_exit.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// ::quick_exit and ::at_quick_exit are not implemented on macOS.
+// TODO: We should never be using `darwin` as the triple, but LLVM's config.guess script
+//       guesses the host triple to be darwin instead of macosx when on macOS.
+// XFAIL: target={{.+}}-apple-macos{{.*}}
+// XFAIL: target={{.+}}-apple-darwin{{.+}}
+
+// test quick_exit and at_quick_exit
+
+#include <cstdlib>
+
+void f() {}
+
+int main(int, char**) {
+    std::at_quick_exit(f);
+    std::quick_exit(0);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byte.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byte.pass.cpp
new file mode 100644
index 0000000..e79af0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byte.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <type_traits>
+#include "test_macros.h"
+
+// XFAIL: c++03, c++11, c++14
+
+// std::byte is not an integer type, nor a character type.
+// It is a distinct type for accessing the bits that ultimately make up object storage.
+
+#if TEST_STD_VER > 17
+static_assert( std::is_trivial<std::byte>::value, "" );   // P0767
+#else
+static_assert( std::is_pod<std::byte>::value, "" );
+#endif
+static_assert(!std::is_arithmetic<std::byte>::value, "" );
+static_assert(!std::is_integral<std::byte>::value, "" );
+
+static_assert(!std::is_same<std::byte,          char>::value, "" );
+static_assert(!std::is_same<std::byte,   signed char>::value, "" );
+static_assert(!std::is_same<std::byte, unsigned char>::value, "" );
+
+// The standard doesn't outright say this, but it's pretty clear that it has to be true.
+static_assert(sizeof(std::byte) == 1, "" );
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/and.assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/and.assign.pass.cpp
new file mode 100644
index 0000000..17008b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/and.assign.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte& operator &=(byte l, byte r) noexcept;
+
+
+constexpr std::byte test(std::byte b1, std::byte b2) {
+    std::byte bret = b1;
+    return bret &= b2;
+    }
+
+
+int main(int, char**) {
+    std::byte b;  // not constexpr, just used in noexcept check
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+    constexpr std::byte b9{static_cast<std::byte>(9)};
+
+    static_assert(noexcept(b &= b), "" );
+
+    static_assert(std::to_integer<int>(test(b1, b8)) == 0, "");
+    static_assert(std::to_integer<int>(test(b1, b9)) == 1, "");
+    static_assert(std::to_integer<int>(test(b8, b9)) == 8, "");
+
+    static_assert(std::to_integer<int>(test(b8, b1)) == 0, "");
+    static_assert(std::to_integer<int>(test(b9, b1)) == 1, "");
+    static_assert(std::to_integer<int>(test(b9, b8)) == 8, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/and.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/and.pass.cpp
new file mode 100644
index 0000000..32c73c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/and.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte operator&(byte l, byte r) noexcept;
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+    constexpr std::byte b9{static_cast<std::byte>(9)};
+
+    static_assert(noexcept(b1 & b8), "" );
+
+    static_assert(std::to_integer<int>(b1 & b8) ==  0, "");
+    static_assert(std::to_integer<int>(b1 & b9) ==  1, "");
+    static_assert(std::to_integer<int>(b8 & b9) ==  8, "");
+
+    static_assert(std::to_integer<int>(b8 & b1) ==  0, "");
+    static_assert(std::to_integer<int>(b9 & b1) ==  1, "");
+    static_assert(std::to_integer<int>(b9 & b8) ==  8, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/enum_direct_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/enum_direct_init.pass.cpp
new file mode 100644
index 0000000..8a84663
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/enum_direct_init.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+int main(int, char**) {
+  constexpr std::byte b{42};
+  static_assert(std::to_integer<int>(b) == 42, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.assign.compile.fail.cpp
new file mode 100644
index 0000000..cdbb788
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.assign.compile.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//   constexpr byte& operator<<=(byte& b, IntegerType shift) noexcept;
+// This function shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+
+constexpr std::byte test(std::byte b) {
+    return b <<= 2.0;
+    }
+
+
+int main(int, char**) {
+    constexpr std::byte b1 = test(std::byte{1});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp
new file mode 100644
index 0000000..7d7040f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//   constexpr byte& operator<<=(byte& b, IntegerType shift) noexcept;
+// This function shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+
+constexpr std::byte test(std::byte b) {
+    return b <<= 2;
+    }
+
+
+int main(int, char**) {
+    std::byte b;  // not constexpr, just used in noexcept check
+    constexpr std::byte b2{static_cast<std::byte>(2)};
+    constexpr std::byte b3{static_cast<std::byte>(3)};
+
+    static_assert(noexcept(b <<= 2), "" );
+
+    static_assert(std::to_integer<int>(test(b2)) ==  8, "" );
+    static_assert(std::to_integer<int>(test(b3)) == 12, "" );
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.compile.fail.cpp
new file mode 100644
index 0000000..4bacc12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//    constexpr byte operator <<(byte b, IntegerType shift) noexcept;
+// These functions shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b2 = b1 << 2.0f;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.pass.cpp
new file mode 100644
index 0000000..7ded2d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/lshift.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//    constexpr byte operator <<(byte b, IntegerType shift) noexcept;
+// These functions shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b3{static_cast<std::byte>(3)};
+
+    static_assert(noexcept(b3 << 2), "" );
+
+    static_assert(std::to_integer<int>(b1 << 1) ==   2, "");
+    static_assert(std::to_integer<int>(b1 << 2) ==   4, "");
+    static_assert(std::to_integer<int>(b3 << 4) ==  48, "");
+    static_assert(std::to_integer<int>(b3 << 6) == 192, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/not.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/not.pass.cpp
new file mode 100644
index 0000000..5c832b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/not.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte operator~(byte b) noexcept;
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b2{static_cast<std::byte>(2)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+
+    static_assert(noexcept(~b1), "" );
+
+    static_assert(std::to_integer<int>(~b1) == 254, "");
+    static_assert(std::to_integer<int>(~b2) == 253, "");
+    static_assert(std::to_integer<int>(~b8) == 247, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/or.assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/or.assign.pass.cpp
new file mode 100644
index 0000000..af34ab5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/or.assign.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte& operator |=(byte l, byte r) noexcept;
+
+
+constexpr std::byte test(std::byte b1, std::byte b2) {
+    std::byte bret = b1;
+    return bret |= b2;
+    }
+
+
+int main(int, char**) {
+    std::byte b;  // not constexpr, just used in noexcept check
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b2{static_cast<std::byte>(2)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+
+    static_assert(noexcept(b |= b), "" );
+
+    static_assert(std::to_integer<int>(test(b1, b2)) ==  3, "");
+    static_assert(std::to_integer<int>(test(b1, b8)) ==  9, "");
+    static_assert(std::to_integer<int>(test(b2, b8)) == 10, "");
+
+    static_assert(std::to_integer<int>(test(b2, b1)) ==  3, "");
+    static_assert(std::to_integer<int>(test(b8, b1)) ==  9, "");
+    static_assert(std::to_integer<int>(test(b8, b2)) == 10, "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/or.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/or.pass.cpp
new file mode 100644
index 0000000..108da1d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/or.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte operator|(byte l, byte r) noexcept;
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b2{static_cast<std::byte>(2)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+
+    static_assert(noexcept(b1 | b2), "" );
+
+    static_assert(std::to_integer<int>(b1 | b2) ==  3, "");
+    static_assert(std::to_integer<int>(b1 | b8) ==  9, "");
+    static_assert(std::to_integer<int>(b2 | b8) == 10, "");
+
+    static_assert(std::to_integer<int>(b2 | b1) ==  3, "");
+    static_assert(std::to_integer<int>(b8 | b1) ==  9, "");
+    static_assert(std::to_integer<int>(b8 | b2) == 10, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.assign.compile.fail.cpp
new file mode 100644
index 0000000..95c8b8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.assign.compile.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//   constexpr byte operator>>(byte& b, IntegerType shift) noexcept;
+// This function shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+
+constexpr std::byte test(std::byte b) {
+    return b >>= 2.0;
+    }
+
+
+int main(int, char**) {
+    constexpr std::byte b1 = test(std::byte{1});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp
new file mode 100644
index 0000000..3410e7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.assign.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//   constexpr byte& operator>>=(byte& b, IntegerType shift) noexcept;
+// This function shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+
+constexpr std::byte test(std::byte b) {
+    return b >>= 2;
+    }
+
+
+int main(int, char**) {
+    std::byte b;  // not constexpr, just used in noexcept check
+    constexpr std::byte b16{static_cast<std::byte>(16)};
+    constexpr std::byte b192{static_cast<std::byte>(192)};
+
+    static_assert(noexcept(b >>= 2), "" );
+
+    static_assert(std::to_integer<int>(test(b16))  ==  4, "" );
+    static_assert(std::to_integer<int>(test(b192)) == 48, "" );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.compile.fail.cpp
new file mode 100644
index 0000000..06fda34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//    constexpr byte operator >>(byte b, IntegerType shift) noexcept;
+// These functions shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b2 = b1 >> 2.0f;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.pass.cpp
new file mode 100644
index 0000000..ffd929b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/rshift.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//    constexpr byte operator <<(byte b, IntegerType shift) noexcept;
+// These functions shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+
+constexpr std::byte test(std::byte b) {
+    return b <<= 2;
+    }
+
+
+int main(int, char**) {
+    constexpr std::byte b100{static_cast<std::byte>(100)};
+    constexpr std::byte b115{static_cast<std::byte>(115)};
+
+    static_assert(noexcept(b100 << 2), "" );
+
+    static_assert(std::to_integer<int>(b100 >> 1) ==  50, "");
+    static_assert(std::to_integer<int>(b100 >> 2) ==  25, "");
+    static_assert(std::to_integer<int>(b115 >> 3) ==  14, "");
+    static_assert(std::to_integer<int>(b115 >> 6) ==   1, "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/to_integer.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/to_integer.compile.fail.cpp
new file mode 100644
index 0000000..3981741
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/to_integer.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//    constexpr IntegerType to_integer(byte b) noexcept;
+// This function shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    auto f = std::to_integer<float>(b1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/to_integer.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/to_integer.pass.cpp
new file mode 100644
index 0000000..fe4b3ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/to_integer.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <type_traits>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class IntegerType>
+//    constexpr IntegerType to_integer(byte b) noexcept;
+// This function shall not participate in overload resolution unless
+//   is_integral_v<IntegerType> is true.
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b3{static_cast<std::byte>(3)};
+
+    static_assert(noexcept(std::to_integer<int>(b1)), "" );
+    static_assert(std::is_same<int, decltype(std::to_integer<int>(b1))>::value, "" );
+    static_assert(std::is_same<long, decltype(std::to_integer<long>(b1))>::value, "" );
+    static_assert(std::is_same<unsigned short, decltype(std::to_integer<unsigned short>(b1))>::value, "" );
+
+    static_assert(std::to_integer<int>(b1) == 1, "");
+    static_assert(std::to_integer<int>(b3) == 3, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/xor.assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/xor.assign.pass.cpp
new file mode 100644
index 0000000..2530336
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/xor.assign.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte& operator ^=(byte l, byte r) noexcept;
+
+
+constexpr std::byte test(std::byte b1, std::byte b2) {
+    std::byte bret = b1;
+    return bret ^= b2;
+    }
+
+
+int main(int, char**) {
+    std::byte b;  // not constexpr, just used in noexcept check
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+    constexpr std::byte b9{static_cast<std::byte>(9)};
+
+    static_assert(noexcept(b ^= b), "" );
+
+    static_assert(std::to_integer<int>(test(b1, b8)) == 9, "");
+    static_assert(std::to_integer<int>(test(b1, b9)) == 8, "");
+    static_assert(std::to_integer<int>(test(b8, b9)) == 1, "");
+
+    static_assert(std::to_integer<int>(test(b8, b1)) == 9, "");
+    static_assert(std::to_integer<int>(test(b9, b1)) == 8, "");
+    static_assert(std::to_integer<int>(test(b9, b8)) == 1, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/xor.pass.cpp
new file mode 100644
index 0000000..9fa7b3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/byteops/xor.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <test_macros.h>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// constexpr byte operator^(byte l, byte r) noexcept;
+
+int main(int, char**) {
+    constexpr std::byte b1{static_cast<std::byte>(1)};
+    constexpr std::byte b8{static_cast<std::byte>(8)};
+    constexpr std::byte b9{static_cast<std::byte>(9)};
+
+    static_assert(noexcept(b1 ^ b8), "" );
+
+    static_assert(std::to_integer<int>(b1 ^ b8) == 9, "");
+    static_assert(std::to_integer<int>(b1 ^ b9) == 8, "");
+    static_assert(std::to_integer<int>(b8 ^ b9) == 1, "");
+
+    static_assert(std::to_integer<int>(b8 ^ b1) == 9, "");
+    static_assert(std::to_integer<int>(b9 ^ b1) == 8, "");
+    static_assert(std::to_integer<int>(b9 ^ b8) == 1, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/cstddef.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/cstddef.compile.pass.cpp
new file mode 100644
index 0000000..f3556eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/cstddef.compile.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test the contents of <cstddef>
+
+// namespace std {
+//   using ptrdiff_t = see below;
+//   using size_t = see below;
+//   using max_align_t = see below;
+//   using nullptr_t = decltype(nullptr);
+//
+//   enum class byte : unsigned char {};
+//
+//   // [support.types.byteops], byte type operations
+//      [...] other byte-related functionality is tested elsewhere
+// }
+//
+// #define NULL see below
+// #define offsetof(P, D) see below
+
+#include <cstddef>
+#include "test_macros.h"
+
+using PtrdiffT = std::ptrdiff_t;
+using SizeT = std::size_t;
+#if TEST_STD_VER >= 11
+using MaxAlignT = std::max_align_t;
+using NullptrT = std::nullptr_t;
+#endif
+
+#if TEST_STD_VER >= 17
+using Byte = std::byte;
+#endif
+
+#ifndef NULL
+#   error "NULL should be defined by <cstddef>"
+#endif
+
+#ifndef offsetof
+#   error "offsetof() should be defined by <cstddef>"
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/max_align_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/max_align_t.compile.pass.cpp
new file mode 100644
index 0000000..aef00bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/max_align_t.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <cstddef>
+#include <type_traits>
+
+// max_align_t is a trivial standard-layout type whose alignment requirement
+//   is at least as great as that of every scalar type
+
+#include "test_macros.h"
+
+static_assert(std::is_trivial<std::max_align_t>::value, "");
+static_assert(std::is_standard_layout<std::max_align_t>::value, "");
+#if TEST_STD_VER <= 17
+static_assert(std::is_pod<std::max_align_t>::value, "");
+#endif
+static_assert(alignof(std::max_align_t) >= alignof(long long), "");
+static_assert(alignof(std::max_align_t) >= alignof(long double), "");
+static_assert(alignof(std::max_align_t) >= alignof(void*), "");
+#if TEST_STD_VER > 14
+static_assert(alignof(std::max_align_t) <= __STDCPP_DEFAULT_NEW_ALIGNMENT__,
+              "max_align_t alignment should be no larger than operator new's alignment");
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/null.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/null.pass.cpp
new file mode 100644
index 0000000..d0787ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/null.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t.pass.cpp
new file mode 100644
index 0000000..768cf66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+// typedef decltype(nullptr) nullptr_t;
+
+struct A
+{
+    A(std::nullptr_t) {}
+};
+
+template <class T>
+void test_conversions()
+{
+    {
+        T p = 0;
+        assert(p == nullptr);
+    }
+    {
+        T p = nullptr;
+        assert(p == nullptr);
+        assert(nullptr == p);
+        assert(!(p != nullptr));
+        assert(!(nullptr != p));
+    }
+}
+
+template <class T> struct Voider { typedef void type; };
+template <class T, class = void> struct has_less : std::false_type {};
+
+template <class T> struct has_less<T,
+    typename Voider<decltype(std::declval<T>() < nullptr)>::type> : std::true_type {};
+
+template <class T>
+void test_comparisons()
+{
+    T p = nullptr;
+    assert(p == nullptr);
+    assert(!(p != nullptr));
+    assert(nullptr == p);
+    assert(!(nullptr != p));
+}
+
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wnull-conversion")
+void test_nullptr_conversions() {
+    {
+        bool b(nullptr);
+        assert(!b);
+    }
+}
+TEST_DIAGNOSTIC_POP
+
+
+int main(int, char**)
+{
+    static_assert(sizeof(std::nullptr_t) == sizeof(void*),
+                  "sizeof(std::nullptr_t) == sizeof(void*)");
+
+    {
+        test_conversions<std::nullptr_t>();
+        test_conversions<void*>();
+        test_conversions<A*>();
+        test_conversions<void(*)()>();
+        test_conversions<void(A::*)()>();
+        test_conversions<int A::*>();
+    }
+    {
+        // TODO: Enable this assertion when GCC compilers implements http://wg21.link/CWG583.
+#if !defined(TEST_COMPILER_GCC)
+        static_assert(!has_less<std::nullptr_t>::value, "");
+#endif
+        test_comparisons<std::nullptr_t>();
+        test_comparisons<void*>();
+        test_comparisons<A*>();
+        test_comparisons<void(*)()>();
+    }
+    test_nullptr_conversions();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t_integral_cast.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t_integral_cast.compile.fail.cpp
new file mode 100644
index 0000000..5802e46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t_integral_cast.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// typedef decltype(nullptr) nullptr_t;
+
+#include <cstddef>
+
+int main(int, char**)
+{
+    std::ptrdiff_t i = static_cast<std::ptrdiff_t>(nullptr);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t_integral_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t_integral_cast.pass.cpp
new file mode 100644
index 0000000..7799056
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/nullptr_t_integral_cast.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// NOTE: nullptr_t emulation (used in libc++ ABI v.1) cannot handle a
+// reinterpret_cast to an integral type
+// UNSUPPORTED: c++03
+
+// typedef decltype(nullptr) nullptr_t;
+
+
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ptrdiff_t i = reinterpret_cast<std::ptrdiff_t>(nullptr);
+    assert(i == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/offsetof.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/offsetof.pass.cpp
new file mode 100644
index 0000000..7a573c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/offsetof.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <cstddef>
+
+#include "test_macros.h"
+
+#ifndef offsetof
+#error offsetof not defined
+#endif
+
+struct A
+{
+    int x;
+};
+
+int main(int, char**)
+{
+    static_assert(noexcept(offsetof(A, x)), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/ptrdiff_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/ptrdiff_t.pass.cpp
new file mode 100644
index 0000000..518acd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/ptrdiff_t.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// ptrdiff_t should:
+
+//  1. be in namespace std.
+//  2. be the same sizeof as void*.
+//  3. be a signed integral.
+
+int main(int, char**)
+{
+    static_assert(sizeof(std::ptrdiff_t) == sizeof(void*),
+                  "sizeof(std::ptrdiff_t) == sizeof(void*)");
+    static_assert(std::is_signed<std::ptrdiff_t>::value,
+                  "std::is_signed<std::ptrdiff_t>::value");
+    static_assert(std::is_integral<std::ptrdiff_t>::value,
+                  "std::is_integral<std::ptrdiff_t>::value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/language.support/support.types/size_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/language.support/support.types/size_t.pass.cpp
new file mode 100644
index 0000000..5bfaebb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/language.support/support.types/size_t.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cstddef>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// size_t should:
+
+//  1. be in namespace std.
+//  2. be the same sizeof as void*.
+//  3. be an unsigned integral.
+
+int main(int, char**)
+{
+    static_assert(sizeof(std::size_t) == sizeof(void*),
+                  "sizeof(std::size_t) == sizeof(void*)");
+    static_assert(std::is_unsigned<std::size_t>::value,
+                  "std::is_unsigned<std::size_t>::value");
+    static_assert(std::is_integral<std::size_t>::value,
+                  "std::is_integral<std::size_t>::value");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp
new file mode 100644
index 0000000..060f179
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/library/description/conventions/customization.point.object/cpo.compile.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// [customization.point.object]
+// [range.adaptor.object] "A range adaptor object is a customization point object..."
+
+#include <compare>
+#include <concepts>
+#include <iterator>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+// Test for basic properties of C++20 16.3.3.3.6 [customization.point.object].
+template <class CPO, class... Args>
+constexpr bool test(CPO& o, Args&&...) {
+  static_assert(std::is_const_v<CPO>);
+  static_assert(std::is_class_v<CPO>);
+  static_assert(std::is_trivial_v<CPO>);
+
+  auto p = o;
+  using T = decltype(p);
+
+  // The type of a customization point object, ignoring cv-qualifiers, shall model semiregular.
+  static_assert(std::semiregular<T>);
+
+  // The type T of a customization point object, ignoring cv-qualifiers, shall model...
+  static_assert(std::invocable<T&, Args...>);
+  static_assert(std::invocable<const T&, Args...>);
+  static_assert(std::invocable<T, Args...>);
+  static_assert(std::invocable<const T, Args...>);
+
+  return true;
+}
+
+int a[10];
+int arrays[10][10];
+//std::pair<int, int> pairs[10];
+
+// [concept.swappable]
+static_assert(test(std::ranges::swap, a, a));
+
+// [iterator.cust]
+static_assert(test(std::ranges::iter_move, a + 0));
+static_assert(test(std::ranges::iter_swap, a + 0, a + 1));
+
+// [cmp.alg]
+static_assert(test(std::partial_order, 1, 2));
+static_assert(test(std::strong_order, 1, 2));
+static_assert(test(std::weak_order, 1, 2));
+static_assert(test(std::compare_partial_order_fallback, 1, 2));
+static_assert(test(std::compare_strong_order_fallback, 1, 2));
+static_assert(test(std::compare_weak_order_fallback, 1, 2));
+
+// [range.access]
+static_assert(test(std::ranges::begin, a));
+static_assert(test(std::ranges::end, a));
+static_assert(test(std::ranges::cbegin, a));
+static_assert(test(std::ranges::cdata, a));
+static_assert(test(std::ranges::cend, a));
+static_assert(test(std::ranges::crbegin, a));
+static_assert(test(std::ranges::crend, a));
+static_assert(test(std::ranges::data, a));
+static_assert(test(std::ranges::empty, a));
+static_assert(test(std::ranges::rbegin, a));
+static_assert(test(std::ranges::rend, a));
+static_assert(test(std::ranges::size, a));
+static_assert(test(std::ranges::ssize, a));
+
+// [range.factories]
+// views::empty<T> is not a CPO
+static_assert(test(std::views::iota, 1));
+static_assert(test(std::views::iota, 1, 10));
+//static_assert(test(std::views::istream<int>, 1);
+static_assert(test(std::views::single, 4));
+
+// [range.adaptors]
+static_assert(test(std::views::all, a));
+static_assert(test(std::views::common, a));
+static_assert(test(std::views::counted, a, 10));
+static_assert(test(std::views::drop, a, 10));
+//static_assert(test(std::views::drop_while, a, [](int x){ return x < 10; }));
+//static_assert(test(std::views::elements<0>, pairs));
+static_assert(test(std::views::filter, a, [](int x){ return x < 10; }));
+static_assert(test(std::views::join, arrays));
+//static_assert(test(std::views::split, a, 4));
+static_assert(test(std::views::lazy_split, a, 4));
+static_assert(test(std::views::reverse, a));
+static_assert(test(std::views::take, a, 10));
+//static_assert(test(std::views::take_while, a, [](int x){ return x < 10; }));
+static_assert(test(std::views::transform, a, [](int x){ return x + 1; }));
diff --git a/app/src/main/cpp/libcxx/test/std/library/description/conventions/customization.point.object/niebloid.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/library/description/conventions/customization.point.object/niebloid.compile.pass.cpp
new file mode 100644
index 0000000..c951b9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/library/description/conventions/customization.point.object/niebloid.compile.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// REQUIRES: stdlib=libc++
+
+// [algorithms.requirements]/2
+// [range.iter.ops.general]/2
+
+#include <algorithm>
+#include <concepts>
+#include <iterator>
+#include <memory>
+#include <random>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+// Niebloids, unlike CPOs, are *not* required to be semiregular or even to have
+// a declared type at all; they are specified as "magic" overload sets whose
+// names are not found by argument-dependent lookup and which inhibit
+// argument-dependent lookup if they are found via a `using`-declaration.
+//
+// libc++ implements them using the same function-object technique we use for CPOs;
+// therefore this file should stay in sync with ./cpo.compile.pass.cpp.
+
+template <class CPO, class... Args>
+constexpr bool test(CPO& o, Args&&...) {
+  static_assert(std::is_const_v<CPO>);
+  static_assert(std::is_class_v<CPO>);
+  static_assert(std::is_trivial_v<CPO>);
+
+  auto p = o;
+  using T = decltype(p);
+
+  // The type of a customization point object, ignoring cv-qualifiers, shall model semiregular.
+  static_assert(std::semiregular<T>);
+
+  // The type T of a customization point object, ignoring cv-qualifiers, shall model...
+  static_assert(std::invocable<T&, Args...>);
+  static_assert(std::invocable<const T&, Args...>);
+  static_assert(std::invocable<T, Args...>);
+  static_assert(std::invocable<const T, Args...>);
+
+  return true;
+}
+
+int *p;
+int a[10];
+auto odd = [](int x) { return x % 2 != 0; };
+auto triple = [](int x) { return 3*x; };
+auto gen = [] { return 42; };
+std::mt19937 g;
+
+// [algorithm.syn]
+
+static_assert(test(std::ranges::adjacent_find, a));
+static_assert(test(std::ranges::all_of, a, odd));
+static_assert(test(std::ranges::any_of, a, odd));
+static_assert(test(std::ranges::binary_search, a, 42));
+static_assert(test(std::ranges::clamp, 42, 42, 42));
+static_assert(test(std::ranges::copy, a, a));
+static_assert(test(std::ranges::copy_backward, a, a));
+static_assert(test(std::ranges::copy_if, a, a, odd));
+static_assert(test(std::ranges::copy_n, a, 10, a));
+static_assert(test(std::ranges::count, a, 42));
+static_assert(test(std::ranges::count_if, a, odd));
+//static_assert(test(std::ranges::ends_with, a, a));
+static_assert(test(std::ranges::equal, a, a));
+static_assert(test(std::ranges::equal_range, a, 42));
+static_assert(test(std::ranges::fill, a, 42));
+static_assert(test(std::ranges::fill_n, a, 10, 42));
+static_assert(test(std::ranges::find, a, 42));
+static_assert(test(std::ranges::find_end, a, a));
+static_assert(test(std::ranges::find_first_of, a, a));
+static_assert(test(std::ranges::find_if, a, odd));
+static_assert(test(std::ranges::find_if_not, a, odd));
+static_assert(test(std::ranges::for_each, a, odd));
+static_assert(test(std::ranges::for_each_n, a, 10, odd));
+static_assert(test(std::ranges::generate, a, gen));
+static_assert(test(std::ranges::generate_n, a, 10, gen));
+static_assert(test(std::ranges::includes, a, a));
+static_assert(test(std::ranges::inplace_merge, a, a+5));
+static_assert(test(std::ranges::is_heap, a));
+static_assert(test(std::ranges::is_heap_until, a));
+static_assert(test(std::ranges::is_partitioned, a, odd));
+static_assert(test(std::ranges::is_permutation, a, a));
+static_assert(test(std::ranges::is_sorted, a));
+static_assert(test(std::ranges::is_sorted_until, a));
+static_assert(test(std::ranges::lexicographical_compare, a, a));
+static_assert(test(std::ranges::lower_bound, a, 42));
+static_assert(test(std::ranges::make_heap, a));
+static_assert(test(std::ranges::max, a));
+static_assert(test(std::ranges::max_element, a));
+static_assert(test(std::ranges::merge, a, a, a));
+static_assert(test(std::ranges::min, a));
+static_assert(test(std::ranges::min_element, a));
+static_assert(test(std::ranges::minmax, a));
+static_assert(test(std::ranges::minmax_element, a));
+static_assert(test(std::ranges::mismatch, a, a));
+static_assert(test(std::ranges::move, a, a));
+static_assert(test(std::ranges::move_backward, a, a));
+static_assert(test(std::ranges::next_permutation, a));
+static_assert(test(std::ranges::none_of, a, odd));
+static_assert(test(std::ranges::nth_element, a, a+5));
+static_assert(test(std::ranges::partial_sort, a, a+5));
+static_assert(test(std::ranges::partial_sort_copy, a, a));
+static_assert(test(std::ranges::partition, a, odd));
+static_assert(test(std::ranges::partition_copy, a, a, a, odd));
+static_assert(test(std::ranges::partition_point, a, odd));
+static_assert(test(std::ranges::pop_heap, a));
+static_assert(test(std::ranges::prev_permutation, a));
+static_assert(test(std::ranges::push_heap, a));
+static_assert(test(std::ranges::remove, a, 42));
+static_assert(test(std::ranges::remove_copy, a, a, 42));
+static_assert(test(std::ranges::remove_copy_if, a, a, odd));
+static_assert(test(std::ranges::remove_if, a, odd));
+static_assert(test(std::ranges::replace, a, 42, 43));
+static_assert(test(std::ranges::replace_copy, a, a, 42, 43));
+static_assert(test(std::ranges::replace_copy_if, a, a, odd, 43));
+static_assert(test(std::ranges::replace_if, a, odd, 43));
+static_assert(test(std::ranges::reverse, a));
+static_assert(test(std::ranges::reverse_copy, a, a));
+static_assert(test(std::ranges::rotate, a, a+5));
+static_assert(test(std::ranges::rotate_copy, a, a+5, a));
+static_assert(test(std::ranges::sample, a, a, 5, g));
+static_assert(test(std::ranges::search, a, a));
+static_assert(test(std::ranges::search_n, a, 10, 42));
+static_assert(test(std::ranges::set_difference, a, a, a));
+static_assert(test(std::ranges::set_intersection, a, a, a));
+static_assert(test(std::ranges::set_symmetric_difference, a, a, a));
+static_assert(test(std::ranges::set_union, a, a, a));
+static_assert(test(std::ranges::shuffle, a, g));
+static_assert(test(std::ranges::sort, a));
+static_assert(test(std::ranges::sort_heap, a));
+static_assert(test(std::ranges::stable_partition, a, odd));
+static_assert(test(std::ranges::stable_sort, a));
+//static_assert(test(std::ranges::starts_with, a, a));
+static_assert(test(std::ranges::swap_ranges, a, a));
+static_assert(test(std::ranges::transform, a, a, triple));
+static_assert(test(std::ranges::unique, a));
+static_assert(test(std::ranges::unique_copy, a, a));
+static_assert(test(std::ranges::upper_bound, a, 42));
+
+// [memory.syn]
+
+static_assert(test(std::ranges::construct_at, a, 42));
+static_assert(test(std::ranges::destroy, a));
+static_assert(test(std::ranges::destroy, a, a+10));
+static_assert(test(std::ranges::destroy_at, a));
+static_assert(test(std::ranges::destroy_n, a, 10));
+static_assert(test(std::ranges::uninitialized_copy, a, a));
+static_assert(test(std::ranges::uninitialized_copy, a, a+10, a, a+10));
+static_assert(test(std::ranges::uninitialized_copy_n, a, 10, a, a+10));
+static_assert(test(std::ranges::uninitialized_default_construct, a));
+static_assert(test(std::ranges::uninitialized_default_construct, a, a+10));
+static_assert(test(std::ranges::uninitialized_default_construct_n, a, 10));
+static_assert(test(std::ranges::uninitialized_fill, a, 42));
+static_assert(test(std::ranges::uninitialized_fill, a, a+10, 42));
+static_assert(test(std::ranges::uninitialized_fill_n, a, 10, 42));
+static_assert(test(std::ranges::uninitialized_move, a, a));
+static_assert(test(std::ranges::uninitialized_move, a, a+10, a, a+10));
+static_assert(test(std::ranges::uninitialized_move_n, a, 10, a, a+10));
+static_assert(test(std::ranges::uninitialized_value_construct, a));
+static_assert(test(std::ranges::uninitialized_value_construct, a, a+10));
+static_assert(test(std::ranges::uninitialized_value_construct_n, a, 10));
+
+// [numeric.ops.overview] currently has no ranges algorithms. See P1813, P2214
+
+// [range.iter.ops]
+
+static_assert(test(std::ranges::advance, p, 5));
+static_assert(test(std::ranges::advance, p, 5, a+10));
+static_assert(test(std::ranges::advance, p, a+10));
+static_assert(test(std::ranges::distance, a));
+static_assert(test(std::ranges::distance, a, a+10));
+static_assert(test(std::ranges::next, a));
+static_assert(test(std::ranges::next, a, 5));
+static_assert(test(std::ranges::next, a, 5, a+10));
+static_assert(test(std::ranges::next, a, a+10));
+static_assert(test(std::ranges::prev, a+10));
+static_assert(test(std::ranges::prev, a+10, 5));
+static_assert(test(std::ranges::prev, a+10, 5, a));
diff --git a/app/src/main/cpp/libcxx/test/std/library/description/conventions/expos.only.func/synth_three_way.pass.cpp b/app/src/main/cpp/libcxx/test/std/library/description/conventions/expos.only.func/synth_three_way.pass.cpp
new file mode 100644
index 0000000..158ea46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/library/description/conventions/expos.only.func/synth_three_way.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto synth-three-way = ...;
+//   via std::tuple<T>(t) <=> std::tuple<U>(u), which exposes its behavior most directly
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_MSVC_DIAGNOSTIC_IGNORED(4242 4244) // Various truncation warnings
+
+#include <cassert>
+#include <compare>
+#include <limits>  // quiet_NaN
+#include <tuple>
+#include <type_traits>
+#include <utility> // declval
+
+template <typename T, typename U = T>
+concept can_synth_three_way = requires(T t, U u) { std::tuple<T>(t) <=> std::tuple<U>(u); };
+
+template <typename T, typename U>
+constexpr auto synth_three_way(const T& t, const U& u) {
+  return std::tuple<T>(t) <=> std::tuple<U>(u);
+}
+
+template <typename T, typename U>
+using synth_three_way_result = decltype(std::declval<std::tuple<T>>() <=> std::declval<std::tuple<U>>());
+
+// A custom three-way result type
+struct CustomEquality {
+  friend constexpr bool operator==(const CustomEquality&, int) noexcept { return true; }
+  friend constexpr bool operator<(const CustomEquality&, int) noexcept { return false; }
+  friend constexpr bool operator<(int, const CustomEquality&) noexcept { return false; }
+};
+
+constexpr bool test() {
+  {
+    assert(synth_three_way(1, 1) == std::strong_ordering::equal);
+    assert(synth_three_way(2, 1) == std::strong_ordering::greater);
+    assert(synth_three_way(1, 2) == std::strong_ordering::less);
+    ASSERT_SAME_TYPE(std::strong_ordering, synth_three_way_result<int, int>);
+    ASSERT_SAME_TYPE(std::strong_ordering, synth_three_way_result<short, long long int>);
+  }
+  {
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    assert(synth_three_way(1.0, 1.0) == std::partial_ordering::equivalent);
+    assert(synth_three_way(2.0, 1.0) == std::partial_ordering::greater);
+    assert(synth_three_way(1.0, 2.0) == std::partial_ordering::less);
+    assert(synth_three_way(nan, nan) == std::partial_ordering::unordered);
+    ASSERT_SAME_TYPE(std::partial_ordering, synth_three_way_result<double, double>);
+    ASSERT_SAME_TYPE(std::partial_ordering, synth_three_way_result<double, float>);
+    ASSERT_SAME_TYPE(std::partial_ordering, synth_three_way_result<double, int>);
+    ASSERT_SAME_TYPE(std::partial_ordering, synth_three_way_result<float, short>);
+  }
+  {
+    struct StrongSpaceship {
+      int value;
+      constexpr bool operator==(const StrongSpaceship&) const = default;
+      constexpr std::strong_ordering operator<=>(const StrongSpaceship& other) const { return value <=> other.value; }
+    };
+    assert(synth_three_way(StrongSpaceship{1}, StrongSpaceship{1}) == std::strong_ordering::equal);
+    assert(synth_three_way(StrongSpaceship{2}, StrongSpaceship{1}) == std::strong_ordering::greater);
+    assert(synth_three_way(StrongSpaceship{1}, StrongSpaceship{2}) == std::strong_ordering::less);
+    ASSERT_SAME_TYPE(std::strong_ordering, synth_three_way_result<StrongSpaceship, StrongSpaceship>);
+  }
+  {
+    struct WeakSpaceship {
+      int value;
+      constexpr bool operator==(const WeakSpaceship&) const = default;
+      constexpr std::weak_ordering operator<=>(const WeakSpaceship& other) const {
+        return value <=> other.value;
+      }
+    };
+    assert(synth_three_way(WeakSpaceship{1}, WeakSpaceship{1}) == std::weak_ordering::equivalent);
+    assert(synth_three_way(WeakSpaceship{2}, WeakSpaceship{1}) == std::weak_ordering::greater);
+    assert(synth_three_way(WeakSpaceship{1}, WeakSpaceship{2}) == std::weak_ordering::less);
+    ASSERT_SAME_TYPE(std::weak_ordering, synth_three_way_result<WeakSpaceship, WeakSpaceship>);
+  }
+  {
+    struct PartialSpaceship {
+      double value;
+      constexpr bool operator==(const PartialSpaceship&) const = default;
+      constexpr std::partial_ordering operator<=>(const PartialSpaceship& other) const {
+        return value <=> other.value;
+      }
+    };
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    assert(synth_three_way(PartialSpaceship{1.0}, PartialSpaceship{1.0}) == std::partial_ordering::equivalent);
+    assert(synth_three_way(PartialSpaceship{2.0}, PartialSpaceship{1.0}) == std::partial_ordering::greater);
+    assert(synth_three_way(PartialSpaceship{1.0}, PartialSpaceship{2.0}) == std::partial_ordering::less);
+    assert(synth_three_way(PartialSpaceship{nan}, PartialSpaceship{nan}) == std::partial_ordering::unordered);
+    ASSERT_SAME_TYPE(std::partial_ordering, synth_three_way_result<PartialSpaceship, PartialSpaceship>);
+  }
+  {
+    struct NoSpaceship {
+      int value;
+      constexpr bool operator==(const NoSpaceship&) const = default;
+      constexpr bool operator<(const NoSpaceship& other) const { return value < other.value; }
+    };
+    assert(synth_three_way(NoSpaceship{1}, NoSpaceship{1}) == std::weak_ordering::equivalent);
+    assert(synth_three_way(NoSpaceship{2}, NoSpaceship{1}) == std::weak_ordering::greater);
+    assert(synth_three_way(NoSpaceship{1}, NoSpaceship{2}) == std::weak_ordering::less);
+    ASSERT_SAME_TYPE(std::weak_ordering, synth_three_way_result<NoSpaceship, NoSpaceship>);
+  }
+  {
+    // Types with operator<=> but no operator== are not three_way_comparable and will fall back to operator< and
+    // compare as weakly ordered.
+    struct SpaceshipNoEquals {
+      constexpr std::strong_ordering operator<=>(const SpaceshipNoEquals&) const {
+        return std::strong_ordering::equivalent;
+      }
+    };
+    assert(synth_three_way(SpaceshipNoEquals{}, SpaceshipNoEquals{}) == std::weak_ordering::equivalent);
+    ASSERT_SAME_TYPE(std::weak_ordering, synth_three_way_result<SpaceshipNoEquals, SpaceshipNoEquals>);
+  }
+  {
+    // Custom three-way-comparison result types cannot satisfy standard concepts (and therefore synth-three-way)
+    // because they are not understood by std::common_comparison_category, but they can still be used in
+    // the same way as standard orderings to do comparisons, and thus can be used by synth-three-way to yield a
+    // weakly-ordered result.
+    struct CustomSpaceship {
+      constexpr CustomEquality operator<=>(const CustomSpaceship&) const { return CustomEquality(); }
+    };
+    assert((CustomSpaceship{} <=> CustomSpaceship{}) == 0);
+    assert(!(CustomSpaceship{} < CustomSpaceship{}));
+    assert(synth_three_way(CustomSpaceship{}, CustomSpaceship{}) == std::weak_ordering::equivalent);
+    ASSERT_SAME_TYPE(std::weak_ordering, synth_three_way_result<CustomSpaceship, CustomSpaceship>);
+  }
+  // SFINAE tests demonstrating synth-three-way needs three_way_comparable or operator<.
+  {
+    struct NoRelative {
+      constexpr bool operator==(const NoRelative&) const;
+    };
+    static_assert(!can_synth_three_way<NoRelative>);
+  }
+  {
+    struct NoLessThan {
+      constexpr bool operator==(const NoLessThan&) const;
+      constexpr bool operator>(const NoLessThan&) const;
+      constexpr bool operator>=(const NoLessThan&) const;
+      constexpr bool operator<=(const NoLessThan&) const;
+    };
+    static_assert(!can_synth_three_way<NoLessThan>);
+  }
+  {
+    assert(synth_three_way(1, 1U) == std::weak_ordering::equivalent);
+    assert(synth_three_way(-1, 0U) == std::weak_ordering::greater);
+    // Even with the warning suppressed (-Wno-sign-compare) there should still be no <=> operator
+    // between signed and unsigned types, so we should end up with a synthesized weak ordering.
+    ASSERT_SAME_TYPE(std::weak_ordering, synth_three_way_result<int, unsigned int>);
+    // When an unsigned type can be narrowed to a larger signed type, <=> should be defined and we
+    // should get a strong ordering. (This probably does not raise a warning due to safe narrowing.)
+    assert(synth_three_way(static_cast<long long int>(-1), static_cast<unsigned char>(0)) == std::strong_ordering::less);
+    assert(synth_three_way(static_cast<long long int>(-1), static_cast<unsigned char>(0)) == std::strong_ordering::less);
+    ASSERT_SAME_TYPE(std::strong_ordering, synth_three_way_result<long long int, unsigned char>);
+  }
+#ifdef TEST_COMPILER_GCC
+  // GCC cannot evaluate NaN @ non-NaN constexpr, so test that runtime-only.
+  if (!std::is_constant_evaluated())
+#endif
+  {
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    assert(synth_three_way(nan, 1.0) == std::partial_ordering::unordered);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/c.locales/clocale.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/c.locales/clocale.pass.cpp
new file mode 100644
index 0000000..e148fff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/c.locales/clocale.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <clocale>
+
+#include <clocale>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef LC_ALL
+#error LC_ALL not defined
+#endif
+
+#ifndef LC_COLLATE
+#error LC_COLLATE not defined
+#endif
+
+#ifndef LC_CTYPE
+#error LC_CTYPE not defined
+#endif
+
+#ifndef LC_MONETARY
+#error LC_MONETARY not defined
+#endif
+
+#ifndef LC_NUMERIC
+#error LC_NUMERIC not defined
+#endif
+
+#ifndef LC_TIME
+#error LC_TIME not defined
+#endif
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+int main(int, char**)
+{
+    std::lconv lc;
+    ((void)lc); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::setlocale(0, "")), char*>::value), "");
+    static_assert((std::is_same<decltype(std::localeconv()), std::lconv*>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/localization/lit.local.cfg
new file mode 100644
index 0000000..de37401
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/lit.local.cfg
@@ -0,0 +1,3 @@
+# <locale> tests are obviously not supported when localization support is disabled
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp
new file mode 100644
index 0000000..69f41c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <locale>
+
+// template <class charT> class collate_byname
+
+// int compare(const charT* low1, const charT* high1,
+//             const charT* low2, const charT* high2) const;
+
+//  I'm currently unable to confirm that collation based on named locales
+//     has any difference from "C" collation.  But I do believe I'm picking
+//     up the OS's collation files.
+
+// https://llvm.org/PR41018
+// XFAIL: windows-dll && msvc
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+#define ASSERT_COMPARE(type, str1, str2, expected) \
+    do { \
+        type s1(str1); \
+        type s2(str2); \
+        assert(f.compare(s1.data(), s1.data() + s1.size(), \
+                         s2.data(), s2.data() + s2.size()) == (expected)); \
+    } while (0)
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+
+            ASSERT_COMPARE(std::string, "aaa", "bbb", -1);
+            ASSERT_COMPARE(std::string, "AAA", "BBB", -1);
+            ASSERT_COMPARE(std::string, "bbb", "aaa", 1);
+            ASSERT_COMPARE(std::string, "ccc", "ccc", 0);
+
+#if defined(__APPLE__)
+            // Apple's default collation is case-sensitive
+            ASSERT_COMPARE(std::string, "aaaaaaA", "BaaaaaA", 1);
+#else
+            // Glibc, Windows, and FreeBSD's default collation is case-insensitive
+            ASSERT_COMPARE(std::string, "aaaaaaA", "BaaaaaA", -1);
+#endif
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+
+            ASSERT_COMPARE(std::wstring, L"aaa", L"bbb", -1);
+            ASSERT_COMPARE(std::wstring, L"AAA", L"BBB", -1);
+            ASSERT_COMPARE(std::wstring, L"bbb", L"aaa", 1);
+            ASSERT_COMPARE(std::wstring, L"ccc", L"ccc", 0);
+#if defined(__APPLE__)
+            // Apple's default collation is case-sensitive
+            ASSERT_COMPARE(std::wstring, L"aaaaaaA", L"BaaaaaA", 1);
+#else
+            // Glibc, Windows, and FreeBSD's default collation is case-insensitive
+            ASSERT_COMPARE(std::wstring, L"aaaaaaA", L"BaaaaaA", -1);
+#endif
+        }
+#endif
+    }
+    {
+        std::locale l("C");
+        {
+            const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+            ASSERT_COMPARE(std::string, "aaa", "bbb", -1);
+            ASSERT_COMPARE(std::string, "AAA", "BBB", -1);
+            ASSERT_COMPARE(std::string, "bbb", "aaa", 1);
+            ASSERT_COMPARE(std::string, "ccc", "ccc", 0);
+
+            // In the C locale, these are collated lexicographically.
+            ASSERT_COMPARE(std::string, "aaaaaaA", "BaaaaaA", 1);
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+
+            ASSERT_COMPARE(std::wstring, L"aaa", L"bbb", -1);
+            ASSERT_COMPARE(std::wstring, L"AAA", L"BBB", -1);
+            ASSERT_COMPARE(std::wstring, L"bbb", L"aaa", 1);
+            ASSERT_COMPARE(std::wstring, L"ccc", L"ccc", 0);
+
+            // In the C locale, these are collated lexicographically.
+            ASSERT_COMPARE(std::wstring, L"aaaaaaA", L"BaaaaaA", 1);
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/hash.pass.cpp
new file mode 100644
index 0000000..383b978
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/hash.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// https://llvm.org/PR41018
+// XFAIL: windows-dll && msvc
+
+// <locale>
+
+// template <class charT> class collate_byname
+
+// long hash(const charT* low, const charT* high) const;
+
+//   This test is not portable
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale l(LOCALE_en_US_UTF_8);
+    {
+        std::string x1("1234");
+        std::string x2("12345");
+        const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+        assert(f.hash(x1.data(), x1.data() + x1.size())
+            != f.hash(x2.data(), x2.data() + x2.size()));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstring x1(L"1234");
+        std::wstring x2(L"12345");
+        const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+        assert(f.hash(x1.data(), x1.data() + x1.size())
+            != f.hash(x2.data(), x2.data() + x2.size()));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/transform.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/transform.pass.cpp
new file mode 100644
index 0000000..8d076fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/transform.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+
+// <locale>
+
+// template <class charT> class collate_byname
+
+// string_type transform(const charT* low, const charT* high) const;
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            std::string x("1234");
+            const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+            assert(f.transform(x.data(), x.data() + x.size()) != x);
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            std::wstring x(L"1234");
+            const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+            assert(f.transform(x.data(), x.data() + x.size()) != x);
+        }
+#endif
+    }
+    {
+        std::locale l("C");
+        {
+            std::string x("1234");
+            const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+            assert(f.transform(x.data(), x.data() + x.size()) == x);
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            std::wstring x(L"1234");
+            const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+            assert(f.transform(x.data(), x.data() + x.size()) == x);
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/types.pass.cpp
new file mode 100644
index 0000000..ba70804
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/types.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <locale>
+
+// template <class charT>
+// class collate_byname
+//     : public collate<charT>
+// {
+// public:
+//     typedef basic_string<charT> string_type;
+//     explicit collate_byname(const char*, size_t refs = 0);
+//     explicit collate_byname(const string&, size_t refs = 0);
+// protected:
+//     ~collate_byname();
+// };
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale l(LOCALE_en_US_UTF_8);
+    {
+        assert(std::has_facet<std::collate_byname<char> >(l));
+        assert(&std::use_facet<std::collate<char> >(l)
+            == &std::use_facet<std::collate_byname<char> >(l));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        assert(std::has_facet<std::collate_byname<wchar_t> >(l));
+        assert(&std::use_facet<std::collate<wchar_t> >(l)
+            == &std::use_facet<std::collate_byname<wchar_t> >(l));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/ctor.pass.cpp
new file mode 100644
index 0000000..024d61f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/ctor.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class collate;
+
+// explicit collate(size_t refs = 0);
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+class my_facet
+    : public std::collate<C>
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : std::collate<C>(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+template <class C> int my_facet<C>::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet<char>);
+        assert(my_facet<char>::count == 1);
+    }
+    assert(my_facet<char>::count == 0);
+    {
+        my_facet<char> f(1);
+        assert(my_facet<char>::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet<char>::count == 1);
+        }
+        assert(my_facet<char>::count == 1);
+    }
+    assert(my_facet<char>::count == 0);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale l(std::locale::classic(), new my_facet<wchar_t>);
+        assert(my_facet<wchar_t>::count == 1);
+    }
+    assert(my_facet<wchar_t>::count == 0);
+    {
+        my_facet<wchar_t> f(1);
+        assert(my_facet<wchar_t>::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet<wchar_t>::count == 1);
+        }
+        assert(my_facet<wchar_t>::count == 1);
+    }
+    assert(my_facet<wchar_t>::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/compare.pass.cpp
new file mode 100644
index 0000000..8028b44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/compare.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// https://llvm.org/PR41018
+// XFAIL: windows-dll && msvc
+
+// <locale>
+
+// template <class charT> class collate;
+
+// int compare(const charT* low1, const charT* high1,
+//             const charT* low2, const charT* high2) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        const char ia[] = "1234";
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        const char ib[] = "123";
+        const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+        assert(f.compare(ia, ia+sa, ib, ib+2) == 1);
+        assert(f.compare(ib, ib+2, ia, ia+sa) == -1);
+        assert(f.compare(ia, ia+sa, ib, ib+3) == 1);
+        assert(f.compare(ib, ib+3, ia, ia+sa) == -1);
+        assert(f.compare(ia, ia+sa, ib+1, ib+3) == -1);
+        assert(f.compare(ib+1, ib+3, ia, ia+sa) == 1);
+        assert(f.compare(ia, ia+3, ib, ib+3) == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        const wchar_t ia[] = L"1234";
+        const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+        const wchar_t ib[] = L"123";
+        const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+        assert(f.compare(ia, ia+sa, ib, ib+2) == 1);
+        assert(f.compare(ib, ib+2, ia, ia+sa) == -1);
+        assert(f.compare(ia, ia+sa, ib, ib+3) == 1);
+        assert(f.compare(ib, ib+3, ia, ia+sa) == -1);
+        assert(f.compare(ia, ia+sa, ib+1, ib+3) == -1);
+        assert(f.compare(ib+1, ib+3, ia, ia+sa) == 1);
+        assert(f.compare(ia, ia+3, ib, ib+3) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/hash.pass.cpp
new file mode 100644
index 0000000..7bcfe91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/hash.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// https://llvm.org/PR41018
+// XFAIL: windows-dll && msvc
+
+// <locale>
+
+// template <class charT> class collate;
+
+// long hash(const charT* low, const charT* high) const;
+
+//   This test is not portable
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        std::string x1("1234");
+        std::string x2("12345");
+        const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+        assert(f.hash(x1.data(), x1.data() + x1.size())
+            != f.hash(x2.data(), x2.data() + x2.size()));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstring x1(L"1234");
+        std::wstring x2(L"12345");
+        const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+        assert(f.hash(x1.data(), x1.data() + x1.size())
+            != f.hash(x2.data(), x2.data() + x2.size()));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/transform.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/transform.pass.cpp
new file mode 100644
index 0000000..fdee9d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.members/transform.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class collate;
+
+// string_type transform(const charT* low, const charT* high) const;
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        std::string x("1234");
+        const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+        assert(f.transform(x.data(), x.data() + x.size()) == x);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstring x(L"1234");
+        const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+        assert(f.transform(x.data(), x.data() + x.size()) == x);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/locale.collate.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/types.pass.cpp
new file mode 100644
index 0000000..6990fff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.collate/locale.collate/types.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT>
+// class collate
+//     : public locale::facet {
+// public:
+//     typedef charT char_type;
+//     typedef basic_string<charT>string_type;
+//
+//     static locale::id id;
+// };
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        assert(std::has_facet<std::collate<char> >(l));
+        const std::collate<char>& f = std::use_facet<std::collate<char> >(l);
+        ((void)f); // Prevent unused warning
+        {
+            (void)std::collate<char>::id;
+        }
+        static_assert((std::is_same<std::collate<char>::char_type, char>::value), "");
+        static_assert((std::is_same<std::collate<char>::string_type, std::string>::value), "");
+        static_assert((std::is_base_of<std::locale::facet, std::collate<char> >::value), "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        assert(std::has_facet<std::collate<wchar_t> >(l));
+        const std::collate<wchar_t>& f = std::use_facet<std::collate<wchar_t> >(l);
+        ((void)f); // Prevent unused warning
+        {
+            (void)std::collate<wchar_t>::id;
+        }
+        static_assert((std::is_same<std::collate<wchar_t>::char_type, wchar_t>::value), "");
+        static_assert((std::is_same<std::collate<wchar_t>::string_type, std::wstring>::value), "");
+        static_assert((std::is_base_of<std::locale::facet, std::collate<wchar_t> >::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/ctype_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/ctype_base.pass.cpp
new file mode 100644
index 0000000..898cfe1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/ctype_base.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class ctype_base
+// {
+// public:
+//     typedef T mask;
+//
+//     // numeric values are for exposition only.
+//     static const mask space = 1 << 0;
+//     static const mask print = 1 << 1;
+//     static const mask cntrl = 1 << 2;
+//     static const mask upper = 1 << 3;
+//     static const mask lower = 1 << 4;
+//     static const mask alpha = 1 << 5;
+//     static const mask digit = 1 << 6;
+//     static const mask punct = 1 << 7;
+//     static const mask xdigit = 1 << 8;
+//     static const mask alnum = alpha | digit;
+//     static const mask graph = alnum | punct;
+// };
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+int main(int, char**)
+{
+    assert(std::ctype_base::space);
+    assert(std::ctype_base::print);
+    assert(std::ctype_base::cntrl);
+    assert(std::ctype_base::upper);
+    assert(std::ctype_base::lower);
+    assert(std::ctype_base::alpha);
+    assert(std::ctype_base::digit);
+    assert(std::ctype_base::punct);
+    assert(std::ctype_base::xdigit);
+    assert(
+      ( std::ctype_base::space
+      & std::ctype_base::print
+      & std::ctype_base::cntrl
+      & std::ctype_base::upper
+      & std::ctype_base::lower
+      & std::ctype_base::alpha
+      & std::ctype_base::digit
+      & std::ctype_base::punct
+      & std::ctype_base::xdigit) == 0);
+    assert(std::ctype_base::alnum == (std::ctype_base::alpha | std::ctype_base::digit));
+    assert(std::ctype_base::graph == (std::ctype_base::alnum | std::ctype_base::punct));
+
+    test(std::ctype_base::space);
+    test(std::ctype_base::print);
+    test(std::ctype_base::cntrl);
+    test(std::ctype_base::upper);
+    test(std::ctype_base::lower);
+    test(std::ctype_base::alpha);
+    test(std::ctype_base::digit);
+    test(std::ctype_base::punct);
+    test(std::ctype_base::xdigit);
+    test(std::ctype_base::blank);
+    test(std::ctype_base::alnum);
+    test(std::ctype_base::graph);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.dtor/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.dtor/dtor.pass.cpp
new file mode 100644
index 0000000..7be7e8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.dtor/dtor.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>
+
+// ~ctype();
+
+#include <locale>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new std::ctype<char>);
+        assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+    }
+    assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+    {
+        std::ctype<char>::mask table[256];
+        std::locale l(std::locale::classic(), new std::ctype<char>(table));
+        assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+    }
+    assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+    {
+        std::locale l(std::locale::classic(),
+            new std::ctype<char>(new std::ctype<char>::mask[256], true));
+        assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+    }
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(
+        globalMemCounter.checkDeleteArrayCalledEq(1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/ctor.pass.cpp
new file mode 100644
index 0000000..740ee8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/ctor.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// explicit ctype(const mask* tbl = 0, bool del = false, size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+class my_facet
+    : public std::ctype<char>
+{
+public:
+    static int count;
+
+    explicit my_facet(const mask* tbl = 0, bool del = false, std::size_t refs = 0)
+        : std::ctype<char>(tbl, del, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(0, false, 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/is_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/is_1.pass.cpp
new file mode 100644
index 0000000..50612a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/is_1.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// bool is(mask m, char c) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.is(F::space, ' '));
+        assert(!f.is(F::space, 'A'));
+
+        assert(f.is(F::print, ' '));
+        assert(!f.is(F::print, '\x07'));
+
+        assert(f.is(F::cntrl, '\x07'));
+        assert(!f.is(F::cntrl, ' '));
+
+        assert(f.is(F::upper, 'A'));
+        assert(!f.is(F::upper, 'a'));
+
+        assert(f.is(F::lower, 'a'));
+        assert(!f.is(F::lower, 'A'));
+
+        assert(f.is(F::alpha, 'a'));
+        assert(!f.is(F::alpha, '1'));
+
+        assert(f.is(F::digit, '1'));
+        assert(!f.is(F::digit, 'a'));
+
+        assert(f.is(F::punct, '.'));
+        assert(!f.is(F::punct, 'a'));
+
+        assert(f.is(F::xdigit, 'a'));
+        assert(!f.is(F::xdigit, 'g'));
+
+        assert(f.is(F::alnum, 'a'));
+        assert(!f.is(F::alnum, '.'));
+
+        assert(f.is(F::graph, '.'));
+        assert(!f.is(F::graph,  '\x07'));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/is_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/is_many.pass.cpp
new file mode 100644
index 0000000..5caf8cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/is_many.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* is(const char* low, const char* high, mask* vec) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        const std::string in(" A\x07.a1");
+        std::vector<F::mask> m(in.size());
+        const char* h = f.is(in.data(), in.data() + in.size(), m.data());
+        assert(h == in.data() + in.size());
+
+        // ' '
+        assert( (m[0] & F::space));
+        assert( (m[0] & F::print));
+        assert(!(m[0] & F::cntrl));
+        assert(!(m[0] & F::upper));
+        assert(!(m[0] & F::lower));
+        assert(!(m[0] & F::alpha));
+        assert(!(m[0] & F::digit));
+        assert(!(m[0] & F::punct));
+        assert(!(m[0] & F::xdigit));
+        assert( (m[0] & F::blank));
+        assert(!(m[0] & F::alnum));
+        assert(!(m[0] & F::graph));
+
+        // 'A'
+        assert(!(m[1] & F::space));
+        assert( (m[1] & F::print));
+        assert(!(m[1] & F::cntrl));
+        assert( (m[1] & F::upper));
+        assert(!(m[1] & F::lower));
+        assert( (m[1] & F::alpha));
+        assert(!(m[1] & F::digit));
+        assert(!(m[1] & F::punct));
+        assert( (m[1] & F::xdigit));
+        assert(!(m[1] & F::blank));
+        assert( (m[1] & F::alnum));
+        assert( (m[1] & F::graph));
+
+        // '\x07'
+        assert(!(m[2] & F::space));
+        assert(!(m[2] & F::print));
+        assert( (m[2] & F::cntrl));
+        assert(!(m[2] & F::upper));
+        assert(!(m[2] & F::lower));
+        assert(!(m[2] & F::alpha));
+        assert(!(m[2] & F::digit));
+        assert(!(m[2] & F::punct));
+        assert(!(m[2] & F::xdigit));
+        assert(!(m[2] & F::blank));
+        assert(!(m[2] & F::alnum));
+        assert(!(m[2] & F::graph));
+
+        // '.'
+        assert(!(m[3] & F::space));
+        assert( (m[3] & F::print));
+        assert(!(m[3] & F::cntrl));
+        assert(!(m[3] & F::upper));
+        assert(!(m[3] & F::lower));
+        assert(!(m[3] & F::alpha));
+        assert(!(m[3] & F::digit));
+        assert( (m[3] & F::punct));
+        assert(!(m[3] & F::xdigit));
+        assert(!(m[3] & F::blank));
+        assert(!(m[3] & F::alnum));
+        assert( (m[3] & F::graph));
+
+        // 'a'
+        assert(!(m[4] & F::space));
+        assert( (m[4] & F::print));
+        assert(!(m[4] & F::cntrl));
+        assert(!(m[4] & F::upper));
+        assert( (m[4] & F::lower));
+        assert( (m[4] & F::alpha));
+        assert(!(m[4] & F::digit));
+        assert(!(m[4] & F::punct));
+        assert( (m[4] & F::xdigit));
+        assert(!(m[4] & F::blank));
+        assert( (m[4] & F::alnum));
+        assert( (m[4] & F::graph));
+
+        // '1'
+        assert(!(m[5] & F::space));
+        assert( (m[5] & F::print));
+        assert(!(m[5] & F::cntrl));
+        assert(!(m[5] & F::upper));
+        assert(!(m[5] & F::lower));
+        assert(!(m[5] & F::alpha));
+        assert( (m[5] & F::digit));
+        assert(!(m[5] & F::punct));
+        assert( (m[5] & F::xdigit));
+        assert(!(m[5] & F::blank));
+        assert( (m[5] & F::alnum));
+        assert( (m[5] & F::graph));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/narrow_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/narrow_1.pass.cpp
new file mode 100644
index 0000000..2323735
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/narrow_1.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// char narrow(char c, char dfault) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.narrow(' ', '*') == ' ');
+        assert(f.narrow('A', '*') == 'A');
+        assert(f.narrow('\x07', '*') == '\x07');
+        assert(f.narrow('.', '*') == '.');
+        assert(f.narrow('a', '*') == 'a');
+        assert(f.narrow('1', '*') == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/narrow_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/narrow_many.pass.cpp
new file mode 100644
index 0000000..18696f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/narrow_many.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* narrow(const char* low, const char*, char dfault, char* to) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        std::string in(" A\x07.a1");
+        std::vector<char> v(in.size());
+
+        assert(f.narrow(&in[0], in.data() + in.size(), '*', v.data()) == in.data() + in.size());
+        assert(v[0] == ' ');
+        assert(v[1] == 'A');
+        assert(v[2] == '\x07');
+        assert(v[3] == '.');
+        assert(v[4] == 'a');
+        assert(v[5] == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/scan_is.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/scan_is.pass.cpp
new file mode 100644
index 0000000..0efde61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/scan_is.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* scan_is(mask m, const char* low, const char* high) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        const std::string in(" A\x07.a1");
+        std::vector<F::mask> m(in.size());
+        assert(f.scan_is(F::space, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_is(F::print, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_is(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 2);
+        assert(f.scan_is(F::upper, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::lower, in.data(), in.data() + in.size()) - in.data() == 4);
+        assert(f.scan_is(F::alpha, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::digit, in.data(), in.data() + in.size()) - in.data() == 5);
+        assert(f.scan_is(F::punct, in.data(), in.data() + in.size()) - in.data() == 3);
+        assert(f.scan_is(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::blank, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_is(F::alnum, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::graph, in.data(), in.data() + in.size()) - in.data() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/scan_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/scan_not.pass.cpp
new file mode 100644
index 0000000..4d815f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/scan_not.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* scan_not(mask m, const char* low, const char* high) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        const std::string in(" A\x07.a1");
+        std::vector<F::mask> m(in.size());
+        assert(f.scan_not(F::space, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_not(F::print, in.data(), in.data() + in.size()) - in.data() == 2);
+        assert(f.scan_not(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::upper, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::lower, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::alpha, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::digit, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::punct, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::blank, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_not(F::alnum, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::graph, in.data(), in.data() + in.size()) - in.data() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/table.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/table.pass.cpp
new file mode 100644
index 0000000..d35ab1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/table.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>
+
+// const mask* table() const throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::ctype<char> F;
+    {
+        std::locale l(std::locale::classic(), new std::ctype<char>);
+        const F& f = std::use_facet<F>(l);
+        assert(f.table() == f.classic_table());
+    }
+    {
+        std::ctype<char>::mask table[256];
+        std::locale l(std::locale::classic(), new std::ctype<char>(table));
+        const F& f = std::use_facet<F>(l);
+        assert(f.table() == table);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/tolower_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/tolower_1.pass.cpp
new file mode 100644
index 0000000..59dca09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/tolower_1.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// char tolower(char) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.tolower(' ') == ' ');
+        assert(f.tolower('A') == 'a');
+        assert(f.tolower('\x07') == '\x07');
+        assert(f.tolower('.') == '.');
+        assert(f.tolower('a') == 'a');
+        assert(f.tolower('1') == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/tolower_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/tolower_many.pass.cpp
new file mode 100644
index 0000000..2474122
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/tolower_many.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* tolower(char* low, const char* high) const;
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        std::string in(" A\x07.a1");
+
+        assert(f.tolower(&in[0], in.data() + in.size()) == in.data() + in.size());
+        assert(in[0] == ' ');
+        assert(in[1] == 'a');
+        assert(in[2] == '\x07');
+        assert(in[3] == '.');
+        assert(in[4] == 'a');
+        assert(in[5] == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/toupper_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/toupper_1.pass.cpp
new file mode 100644
index 0000000..e54cef7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/toupper_1.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// char toupper(char) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.toupper(' ') == ' ');
+        assert(f.toupper('A') == 'A');
+        assert(f.toupper('\x07') == '\x07');
+        assert(f.toupper('.') == '.');
+        assert(f.toupper('a') == 'A');
+        assert(f.toupper('1') == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/toupper_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/toupper_many.pass.cpp
new file mode 100644
index 0000000..7d17966
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/toupper_many.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* toupper(char* low, const char* high) const;
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        std::string in(" A\x07.a1");
+
+        assert(f.toupper(&in[0], in.data() + in.size()) == in.data() + in.size());
+        assert(in[0] == ' ');
+        assert(in[1] == 'A');
+        assert(in[2] == '\x07');
+        assert(in[3] == '.');
+        assert(in[4] == 'A');
+        assert(in[5] == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/widen_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/widen_1.pass.cpp
new file mode 100644
index 0000000..9ed46d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/widen_1.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// char widen(char c) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.widen(' ') == ' ');
+        assert(f.widen('A') == 'A');
+        assert(f.widen('\x07') == '\x07');
+        assert(f.widen('.') == '.');
+        assert(f.widen('a') == 'a');
+        assert(f.widen('1') == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/widen_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/widen_many.pass.cpp
new file mode 100644
index 0000000..aff494e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.members/widen_many.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>;
+
+// const char* widen(const char* low, const char* high, char* to) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<char> F;
+        const F& f = std::use_facet<F>(l);
+        std::string in(" A\x07.a1");
+        std::vector<char> v(in.size());
+
+        assert(f.widen(&in[0], in.data() + in.size(), v.data()) == in.data() + in.size());
+        assert(v[0] == ' ');
+        assert(v[1] == 'A');
+        assert(v[2] == '\x07');
+        assert(v[3] == '.');
+        assert(v[4] == 'a');
+        assert(v[5] == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.statics/classic_table.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.statics/classic_table.pass.cpp
new file mode 100644
index 0000000..7f85dee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.statics/classic_table.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>
+
+// static const mask* classic_table() throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::ctype<char> F;
+    assert(F::classic_table() != 0);
+    assert(F::table_size >= 256);
+
+    typedef F::mask mask;
+    const mask *p = F::classic_table();
+
+    for ( size_t i = 0; i < 128; ++i ) // values above 128 are not consistent
+    {
+
+        bool expect_cntrl = (i < 32 || 126 < i);
+        bool expect_print = (32 <= i && i <= 126);
+
+        bool expect_space = (9 <= i && i <= 13) || (i == ' ');
+#if defined(_MSVC_STL_VERSION)
+        // MS STL includes the _SPACE bit in F::blank
+        bool expect_blank = (9 <= i && i <= 13) || (i == ' ');
+#elif defined(_WIN32)
+        // The _BLANK bit isn't set for '\t' on Windows
+        bool expect_blank = (i == ' ');
+#else
+        bool expect_blank = (i == '\t' || i == ' ');
+#endif
+
+        bool expect_upper = ('A' <= i && i <= 'Z');
+        bool expect_lower = ('a' <= i && i <= 'z');
+        bool expect_alpha = expect_upper || expect_lower;
+
+        bool expect_digit = ('0' <= i && i <= '9');
+        bool expect_xdigit = ('A' <= i && i <= 'F')
+                          || ('a' <= i && i <= 'f')
+                          || expect_digit;
+
+        bool expect_punct = (33 <= i && i <= 47)     // ' ' .. '/'
+                         || (58 <= i && i <= 64)     // ':' .. '@'
+                         || (91 <= i && i <= 96)     // '[' .. '`'
+                         || (123 <= i && i <= 126);  // '{' .. '~'
+
+        assert(bool(p[i] & F::cntrl) == expect_cntrl);
+        assert(bool(p[i] & F::print) == expect_print);
+        assert(bool(p[i] & F::space) == expect_space);
+        assert(bool(p[i] & F::blank) == expect_blank);
+        assert(bool(p[i] & F::lower) == expect_lower);
+        assert(bool(p[i] & F::upper) == expect_upper);
+        assert(bool(p[i] & F::alpha) == expect_alpha);
+        assert(bool(p[i] & F::digit) == expect_digit);
+        assert(bool(p[i] & F::xdigit) == expect_xdigit);
+        assert(bool(p[i] & F::punct) == expect_punct);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.statics/table_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.statics/table_size.pass.cpp
new file mode 100644
index 0000000..4017b94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.statics/table_size.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class ctype<char>
+
+// Make sure we can reference std::ctype<char>::table_size.
+
+// Before https://llvm.org/D110647, the shared library did not contain
+// std::ctype<char>::table_size, so this test fails with a link error.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0|13.0}}
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  typedef std::ctype<char> F;
+  const size_t* G = &F::table_size;
+  assert(*G >= 256);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/facet.ctype.char.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/types.pass.cpp
new file mode 100644
index 0000000..8a97a5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/facet.ctype.special/types.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <>
+// class ctype<char>
+//     : public locale::facet,
+//       public ctype_base
+// {
+// public:
+//     typedef char char_type;
+// };
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        assert(std::has_facet<std::ctype<char> >(l));
+        const std::ctype<char>& f = std::use_facet<std::ctype<char> >(l);
+        ((void)f); // Prevent unused warning
+        {
+            (void)std::ctype<char>::id;
+        }
+        static_assert((std::is_same<std::ctype<char>::char_type, char>::value), "");
+        static_assert((std::is_base_of<std::ctype_base, std::ctype<char> >::value), "");
+        static_assert((std::is_base_of<std::locale::facet, std::ctype<char> >::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/codecvt_byname_char16_t_char.depr_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/codecvt_byname_char16_t_char.depr_in_cxx20.verify.cpp
new file mode 100644
index 0000000..c430321
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/codecvt_byname_char16_t_char.depr_in_cxx20.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// codecvt_byname<char16_t, char, mbstate_t>
+//  deprecated in C++20
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <locale>
+
+#include "../with_public_dtor.hpp"
+#include "test_macros.h"
+
+int main(int, char **)
+{
+    // Don't test for the exact type since the underlying type of
+    // std::mbstate_t depends on implementation details.
+    with_public_dtor<std::codecvt_byname<char16_t, char, std::mbstate_t>> cvt("", 0); // expected-warning-re {{'codecvt_byname<char16_t, char, {{.*}}>' is deprecated}}
+    (void)cvt;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/codecvt_byname_char32_t_char.depr_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/codecvt_byname_char32_t_char.depr_in_cxx20.verify.cpp
new file mode 100644
index 0000000..ebace3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/codecvt_byname_char32_t_char.depr_in_cxx20.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// codecvt_byname<char32_t, char, mbstate_t>
+//  deprecated in C++20
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <locale>
+
+#include "../with_public_dtor.hpp"
+#include "test_macros.h"
+
+int main(int, char **)
+{
+    // Don't test for the exact type since the underlying type of
+    // std::mbstate_t depends on implementation details.
+    with_public_dtor<std::codecvt_byname<char32_t, char, std::mbstate_t>> cvt("", 0); // expected-warning-re {{'codecvt_byname<char32_t, char, {{.*}}>' is deprecated}}
+    (void)cvt;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char.pass.cpp
new file mode 100644
index 0000000..ed4212c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt_byname<char, char, mbstate_t>
+
+// explicit codecvt_byname(const char* nm, size_t refs = 0);
+// explicit codecvt_byname(const string& nm, size_t refs = 0);
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h"
+
+typedef std::codecvt_byname<char, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(const char* nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet(LOCALE_en_US_UTF_8));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(LOCALE_en_US_UTF_8, 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        std::locale l(std::locale::classic(), new my_facet(std::string(LOCALE_en_US_UTF_8)));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(std::string(LOCALE_en_US_UTF_8), 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char16_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char16_t.pass.cpp
new file mode 100644
index 0000000..7fef3ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char16_t.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt_byname<char16_t, char, mbstate_t>
+
+// explicit codecvt_byname(const char* nm, size_t refs = 0);
+// explicit codecvt_byname(const string& nm, size_t refs = 0);
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt_byname<char16_t, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(const char* nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet("en_US"));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f("en_US", 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        std::locale l(std::locale::classic(), new my_facet(std::string("en_US")));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(std::string("en_US"), 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char16_t_char8_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char16_t_char8_t.pass.cpp
new file mode 100644
index 0000000..a910eb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char16_t_char8_t.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt_byname<char16_t, char8_t, mbstate_t>
+
+// explicit codecvt_byname(const char* nm, size_t refs = 0);
+// explicit codecvt_byname(const string& nm, size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt_byname<char16_t, char8_t, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(const char* nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet("en_US"));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f("en_US", 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        std::locale l(std::locale::classic(), new my_facet(std::string("en_US")));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(std::string("en_US"), 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char32_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char32_t.pass.cpp
new file mode 100644
index 0000000..17fbb73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char32_t.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt_byname<char32_t, char, mbstate_t>
+
+// explicit codecvt_byname(const char* nm, size_t refs = 0);
+// explicit codecvt_byname(const string& nm, size_t refs = 0);
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt_byname<char32_t, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(const char* nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet("en_US"));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f("en_US", 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        std::locale l(std::locale::classic(), new my_facet(std::string("en_US")));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(std::string("en_US"), 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char32_t_char8_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char32_t_char8_t.pass.cpp
new file mode 100644
index 0000000..d0b74a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_char32_t_char8_t.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt_byname<char32_t, char8_t, mbstate_t>
+
+// explicit codecvt_byname(const char* nm, size_t refs = 0);
+// explicit codecvt_byname(const string& nm, size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt_byname<char32_t, char8_t, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(const char* nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet("en_US"));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f("en_US", 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        std::locale l(std::locale::classic(), new my_facet(std::string("en_US")));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(std::string("en_US"), 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_wchar_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_wchar_t.pass.cpp
new file mode 100644
index 0000000..b15540c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt.byname/ctor_wchar_t.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <locale>
+
+// template <> class codecvt_byname<wchar_t, char, mbstate_t>
+
+// explicit codecvt_byname(const char* nm, size_t refs = 0);
+// explicit codecvt_byname(const string& nm, size_t refs = 0);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::codecvt_byname<wchar_t, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(const char* nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet(LOCALE_en_US_UTF_8));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(LOCALE_en_US_UTF_8, 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        std::locale l(std::locale::classic(), new my_facet(std::string(LOCALE_en_US_UTF_8)));
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(std::string(LOCALE_en_US_UTF_8), 1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_base.pass.cpp
new file mode 100644
index 0000000..a77dce6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_base.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class codecvt_base
+// {
+// public:
+//     enum result {ok, partial, error, noconv};
+// };
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::codecvt_base::ok == 0);
+    assert(std::codecvt_base::partial == 1);
+    assert(std::codecvt_base::error == 2);
+    assert(std::codecvt_base::noconv == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_char16_t_char.depr_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_char16_t_char.depr_in_cxx20.verify.cpp
new file mode 100644
index 0000000..54f57c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_char16_t_char.depr_in_cxx20.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// codecvt<char16_t, char, mbstate_t>
+//  deprecated in C++20
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <locale>
+
+#include "../with_public_dtor.hpp"
+#include "test_macros.h"
+
+int main(int, char **)
+{
+    // Don't test for the exact type since the underlying type of
+    // std::mbstate_t depends on implementation details.
+    with_public_dtor<std::codecvt<char16_t, char, std::mbstate_t>> cvt("", 0); // expected-warning-re {{'codecvt<char16_t, char, {{.*}}>' is deprecated}}
+    (void)cvt;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_char32_t_char.depr_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_char32_t_char.depr_in_cxx20.verify.cpp
new file mode 100644
index 0000000..9b7fdc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/codecvt_char32_t_char.depr_in_cxx20.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// codecvt<char32_t, char, mbstate_t>
+//  deprecated in C++20
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <locale>
+
+#include "../with_public_dtor.hpp"
+#include "test_macros.h"
+
+int main(int, char **)
+{
+    // Don't test for the exact type since the underlying type of
+    // std::mbstate_t depends on implementation details.
+    with_public_dtor<std::codecvt<char32_t, char, std::mbstate_t>> cvt("", 0); // expected-warning-re {{'codecvt<char32_t, char, {{.*}}>' is deprecated}}
+    (void)cvt;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char.pass.cpp
new file mode 100644
index 0000000..6a2541b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// explicit codecvt(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char16_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char16_t.pass.cpp
new file mode 100644
index 0000000..e459954
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char16_t.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// explicit codecvt(size_t refs = 0);
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char16_t_char8_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char16_t_char8_t.pass.cpp
new file mode 100644
index 0000000..54a5846
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char16_t_char8_t.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// explicit codecvt(size_t refs = 0);
+
+#include <cassert>
+#include <locale>
+
+using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+
+struct my_facet : F {
+  static int count;
+
+  explicit my_facet(std::size_t refs = 0) : F(refs) { ++count; }
+
+  ~my_facet() { --count; }
+};
+
+int my_facet::count = 0;
+
+int main(int, char**) {
+  {
+    std::locale l(std::locale::classic(), new my_facet);
+    assert(my_facet::count == 1);
+  }
+  assert(my_facet::count == 0);
+  {
+    my_facet f(1);
+    assert(my_facet::count == 1);
+    {
+      std::locale l(std::locale::classic(), &f);
+      assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 1);
+  }
+  assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char32_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char32_t.pass.cpp
new file mode 100644
index 0000000..854c549
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char32_t.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// explicit codecvt(size_t refs = 0);
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char32_t_char8_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char32_t_char8_t.pass.cpp
new file mode 100644
index 0000000..0599e05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_char32_t_char8_t.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// explicit codecvt(size_t refs = 0);
+
+#include <cassert>
+#include <locale>
+
+using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+
+struct my_facet : F {
+  static int count;
+
+  explicit my_facet(std::size_t refs = 0) : F(refs) { ++count; }
+
+  ~my_facet() { --count; }
+};
+
+int my_facet::count = 0;
+
+int main(int, char**) {
+  {
+    std::locale l(std::locale::classic(), new my_facet);
+    assert(my_facet::count == 1);
+  }
+  assert(my_facet::count == 0);
+  {
+    my_facet f(1);
+    assert(my_facet::count == 1);
+    {
+      std::locale l(std::locale::classic(), &f);
+      assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 1);
+  }
+  assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_wchar_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_wchar_t.pass.cpp
new file mode 100644
index 0000000..dd7fdb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/ctor_wchar_t.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// explicit codecvt(size_t refs = 0);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_always_noconv.pass.cpp
new file mode 100644
index 0000000..998d970
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_always_noconv.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// bool always_noconv() const throw();
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(!f.always_noconv());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_always_noconv.pass.cpp
new file mode 100644
index 0000000..382c184
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_always_noconv.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// bool always_noconv() const noexcept;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  assert(!f.always_noconv());
+  static_assert(noexcept(f.always_noconv()));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_encoding.pass.cpp
new file mode 100644
index 0000000..3db1619
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_encoding.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// int encoding() const noexcept;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  assert(f.encoding() == 0);
+  static_assert(noexcept(f.encoding()));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_in.pass.cpp
new file mode 100644
index 0000000..5639305
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_in.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// result in(stateT& state,
+//           const externT* from, const externT* from_end, const externT*& from_next,
+//           internT* to, internT* to_end, internT*& to_next) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F::extern_type from[] = u8"some text";
+  F::intern_type to[9];
+  const F& f = std::use_facet<F>(std::locale::classic());
+  std::mbstate_t mbs = {};
+  const F::extern_type* from_next = nullptr;
+  F::intern_type* to_next = nullptr;
+  assert(f.in(mbs, from, from + 9, from_next, to, to + 9, to_next) == F::ok);
+  assert(from_next - from == 9);
+  assert(to_next - to == 9);
+  for (unsigned i = 0; i < 9; ++i)
+    assert(to[i] == from[i]);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_length.pass.cpp
new file mode 100644
index 0000000..24b0c4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_length.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// int length(stateT& state, const externT* from, const externT* from_end, size_t max) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  std::mbstate_t mbs = {};
+  const char8_t from[] = u8"some text";
+  assert(f.length(mbs, from, from + 10, 0) == 0);
+  assert(f.length(mbs, from, from + 10, 8) == 8);
+  assert(f.length(mbs, from, from + 10, 9) == 9);
+  assert(f.length(mbs, from, from + 10, 10) == 10);
+  assert(f.length(mbs, from, from + 10, 100) == 10);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_max_length.pass.cpp
new file mode 100644
index 0000000..519446d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_max_length.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// int max_length() const noexcept;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  assert(f.max_length() == 4);
+  static_assert(noexcept(f.max_length()));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_out.pass.cpp
new file mode 100644
index 0000000..3ae5b8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_out.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// result out(stateT& state,
+//            const internT* from, const internT* from_end, const internT*& from_next,
+//            externT* to, externT* to_end, externT*& to_next) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  F::intern_type from[9] = {u's', u'o', u'm', u'e', u' ', u't', u'e', u'x', u't'};
+  F::extern_type to[9] = {0};
+  std::mbstate_t mbs = {};
+  const F::intern_type* from_next = nullptr;
+  F::extern_type* to_next = nullptr;
+  F::result r = f.out(mbs, from, from + 9, from_next, to, to + 9, to_next);
+  assert(r == F::ok);
+  assert(from_next - from == 9);
+  assert(to_next - to == 9);
+  for (unsigned i = 0; i < 9; ++i)
+    assert(to[i] == from[i]);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_unshift.pass.cpp
new file mode 100644
index 0000000..d27c1d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_char8_t_unshift.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char16_t, char8_t, mbstate_t>
+
+// result unshift(stateT& state,
+//                externT* to, externT* to_end, externT*& to_next) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  std::mbstate_t mbs = {};
+  char8_t to[3];
+  char8_t* to_next = nullptr;
+  assert(f.unshift(mbs, to, to + 3, to_next) == F::noconv);
+  assert(to_next == to);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_encoding.pass.cpp
new file mode 100644
index 0000000..1e2b4ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_encoding.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// int encoding() const throw();
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.encoding() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_in.pass.cpp
new file mode 100644
index 0000000..9204ea2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_in.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// result in(stateT& state,
+//           const externT* from, const externT* from_end, const externT*& from_next,
+//           internT* to, internT* to_end, internT*& to_next) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// Test is intended to convert between UTF8 and UTF16/32, it will fail on
+// z/OS since at default char type on z/OS is EBCDIC character which has
+// value different from ASCII character.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const char from[] = "some text";
+    F::intern_type to[9];
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char* from_next = 0;
+    F::intern_type* to_next = 0;
+    assert(f.in(mbs, from, from + 9, from_next,
+                     to, to + 9, to_next) == F::ok);
+    assert(from_next - from == 9);
+    assert(to_next - to == 9);
+    for (unsigned i = 0; i < 9; ++i)
+        assert(to[i] == from[i]);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_length.pass.cpp
new file mode 100644
index 0000000..98c5824
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_length.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// int length(stateT& state, const externT* from, const externT* from_end, size_t max) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// Test is intended to convert between UTF8 and UTF16/32, it will fail on
+// z/OS since at default char type on z/OS is EBCDIC character which has
+// value different from ASCII character.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char from[] = "some text";
+    assert(f.length(mbs, from, from+10, 0) == 0);
+    assert(f.length(mbs, from, from+10, 8) == 8);
+    assert(f.length(mbs, from, from+10, 9) == 9);
+    assert(f.length(mbs, from, from+10, 10) == 10);
+    assert(f.length(mbs, from, from+10, 100) == 10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_max_length.pass.cpp
new file mode 100644
index 0000000..d8aa749
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_max_length.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// int max_length() const throw();
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.max_length() == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_out.pass.cpp
new file mode 100644
index 0000000..a8f16fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_out.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// result out(stateT& state,
+//            const internT* from, const internT* from_end, const internT*& from_next,
+//            externT* to, externT* to_end, externT*& to_next) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// Test is intended to convert between UTF8 and UTF16/32, it will fail on
+// z/OS since at default char type on z/OS is EBCDIC character which has
+// value different from ASCII character.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    {
+        F::intern_type from[9] = {'s', 'o', 'm', 'e', ' ', 't', 'e', 'x', 't'};
+        char to[9] = {0};
+        std::mbstate_t mbs = {};
+        const F::intern_type* from_next = 0;
+        char* to_next = 0;
+        F::result r = f.out(mbs, from, from + 9, from_next,
+                                 to, to + 9, to_next);
+        assert(r == F::ok);
+        assert(from_next - from == 9);
+        assert(to_next - to == 9);
+        for (unsigned i = 0; i < 9; ++i)
+            assert(to[i] == from[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_unshift.pass.cpp
new file mode 100644
index 0000000..bec4055
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char16_t_unshift.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char16_t, char, mbstate_t>
+
+// result unshift(stateT& state,
+//                externT* to, externT* to_end, externT*& to_next) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    std::vector<char> to(3);
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    char* to_next = 0;
+    assert(f.unshift(mbs, to.data(), to.data() + to.size(), to_next) == F::noconv);
+    assert(to_next == to.data());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_always_noconv.pass.cpp
new file mode 100644
index 0000000..7dc4c87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_always_noconv.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// bool always_noconv() const throw();
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(!f.always_noconv());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_always_noconv.pass.cpp
new file mode 100644
index 0000000..eb208b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_always_noconv.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// bool always_noconv() const noexcept;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  assert(!f.always_noconv());
+  static_assert(noexcept(f.always_noconv()));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_encoding.pass.cpp
new file mode 100644
index 0000000..8aeec78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_encoding.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// int encoding() const noexcept;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  assert(f.encoding() == 0);
+  static_assert(noexcept(f.encoding()));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_in.pass.cpp
new file mode 100644
index 0000000..cb05562
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_in.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// result in(stateT& state,
+//           const externT* from, const externT* from_end, const externT*& from_next,
+//           internT* to, internT* to_end, internT*& to_next) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F::extern_type from[] = u8"some text";
+  F::intern_type to[9];
+  const F& f = std::use_facet<F>(std::locale::classic());
+  std::mbstate_t mbs = {};
+  const F::extern_type* from_next = nullptr;
+  F::intern_type* to_next = nullptr;
+  assert(f.in(mbs, from, from + 9, from_next, to, to + 9, to_next) == F::ok);
+  assert(from_next - from == 9);
+  assert(to_next - to == 9);
+  for (unsigned i = 0; i < 9; ++i)
+    assert(to[i] == from[i]);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_length.pass.cpp
new file mode 100644
index 0000000..57b76c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_length.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// int length(stateT& state, const externT* from, const externT* from_end, size_t max) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  std::mbstate_t mbs = {};
+  const char8_t from[] = u8"some text";
+  assert(f.length(mbs, from, from + 10, 0) == 0);
+  assert(f.length(mbs, from, from + 10, 8) == 8);
+  assert(f.length(mbs, from, from + 10, 9) == 9);
+  assert(f.length(mbs, from, from + 10, 10) == 10);
+  assert(f.length(mbs, from, from + 10, 100) == 10);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_max_length.pass.cpp
new file mode 100644
index 0000000..9d3adca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_max_length.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// int max_length() const noexcept;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  assert(f.max_length() == 4);
+  static_assert(noexcept(f.max_length()));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_out.pass.cpp
new file mode 100644
index 0000000..28f0309
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_out.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// result out(stateT& state,
+//            const internT* from, const internT* from_end, const internT*& from_next,
+//            externT* to, externT* to_end, externT*& to_next) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  F::intern_type from[9] = {u's', u'o', u'm', u'e', u' ', u't', u'e', u'x', u't'};
+  F::extern_type to[9] = {0};
+  std::mbstate_t mbs = {};
+  const F::intern_type* from_next = nullptr;
+  F::extern_type* to_next = nullptr;
+  F::result r = f.out(mbs, from, from + 9, from_next, to, to + 9, to_next);
+  assert(r == F::ok);
+  assert(from_next - from == 9);
+  assert(to_next - to == 9);
+  for (unsigned i = 0; i < 9; ++i)
+    assert(to[i] == from[i]);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_unshift.pass.cpp
new file mode 100644
index 0000000..4eacd50
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_char8_t_unshift.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <> class codecvt<char32_t, char8_t, mbstate_t>
+
+// result unshift(stateT& state,
+//                externT* to, externT* to_end, externT*& to_next) const;
+
+#include <cassert>
+#include <locale>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  const F& f = std::use_facet<F>(std::locale::classic());
+  std::mbstate_t mbs = {};
+  char8_t to[3];
+  char8_t* to_next = nullptr;
+  assert(f.unshift(mbs, to, to + 3, to_next) == F::noconv);
+  assert(to_next == to);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_encoding.pass.cpp
new file mode 100644
index 0000000..13eb918
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_encoding.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// int encoding() const throw();
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.encoding() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_in.pass.cpp
new file mode 100644
index 0000000..74cc479
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_in.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// result in(stateT& state,
+//           const externT* from, const externT* from_end, const externT*& from_next,
+//           internT* to, internT* to_end, internT*& to_next) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// Test is intended to convert between UTF8 and UTF16/32, it will fail on
+// z/OS since at default char type on z/OS is EBCDIC character which has
+// value different from ASCII character.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const char from[] = "some text";
+    F::intern_type to[9];
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char* from_next = 0;
+    F::intern_type* to_next = 0;
+    assert(f.in(mbs, from, from + 9, from_next,
+                     to, to + 9, to_next) == F::ok);
+    assert(from_next - from == 9);
+    assert(to_next - to == 9);
+    for (unsigned i = 0; i < 9; ++i)
+        assert(to[i] == static_cast<char32_t>(from[i]));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_length.pass.cpp
new file mode 100644
index 0000000..f51a9db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_length.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// int length(stateT& state, const externT* from, const externT* from_end, size_t max) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// Test is intended to convert between UTF8 and UTF16/32, it will fail on
+// z/OS since at default char type on z/OS is EBCDIC character which has
+// value different from ASCII character.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char from[] = "some text";
+    assert(f.length(mbs, from, from+10, 0) == 0);
+    assert(f.length(mbs, from, from+10, 8) == 8);
+    assert(f.length(mbs, from, from+10, 9) == 9);
+    assert(f.length(mbs, from, from+10, 10) == 10);
+    assert(f.length(mbs, from, from+10, 100) == 10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_max_length.pass.cpp
new file mode 100644
index 0000000..ef31dbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_max_length.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// int max_length() const throw();
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.max_length() == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_out.pass.cpp
new file mode 100644
index 0000000..379b607
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_out.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// result out(stateT& state,
+//            const internT* from, const internT* from_end, const internT*& from_next,
+//            externT* to, externT* to_end, externT*& to_next) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// Test is intended to convert between UTF8 and UTF16/32, it will fail on
+// z/OS since at default char type on z/OS is EBCDIC character which has
+// value different from ASCII character.
+// UNSUPPORTED: target={{.+}}-zos{{.*}}
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    {
+        F::intern_type from[9] = {'s', 'o', 'm', 'e', ' ', 't', 'e', 'x', 't'};
+        char to[9] = {0};
+        std::mbstate_t mbs = {};
+        const F::intern_type* from_next = 0;
+        char* to_next = 0;
+        F::result r = f.out(mbs, from, from + 9, from_next,
+                                 to, to + 9, to_next);
+        assert(r == F::ok);
+        assert(from_next - from == 9);
+        assert(to_next - to == 9);
+        for (unsigned i = 0; i < 9; ++i)
+            assert(static_cast<char32_t>(to[i]) == from[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_unshift.pass.cpp
new file mode 100644
index 0000000..b962af4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char32_t_unshift.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+
+// result unshift(stateT& state,
+//                externT* to, externT* to_end, externT*& to_next) const;
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    std::vector<char> to(3);
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    char* to_next = 0;
+    assert(f.unshift(mbs, to.data(), to.data() + to.size(), to_next) == F::noconv);
+    assert(to_next == to.data());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_always_noconv.pass.cpp
new file mode 100644
index 0000000..a5ef0b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_always_noconv.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// bool always_noconv() const throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.always_noconv());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_encoding.pass.cpp
new file mode 100644
index 0000000..ec1fd6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_encoding.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// int encoding() const throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.encoding() == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_in.pass.cpp
new file mode 100644
index 0000000..0845117
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_in.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// result in(stateT& state,
+//           const externT* from, const externT* from_end, const externT*& from_next,
+//           internT* to, internT* to_end, internT*& to_next) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const std::basic_string<F::intern_type> from("some text");
+    std::vector<char> to(from.size());
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char* from_next = 0;
+    char* to_next = 0;
+    assert(f.in(mbs, from.data(), from.data() + from.size(), from_next,
+                     to.data(), to.data() + to.size(), to_next) == F::noconv);
+    assert(from_next == from.data());
+    assert(to_next == to.data());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_length.pass.cpp
new file mode 100644
index 0000000..b19a073
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_length.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// int length(stateT& state, const externT* from, const externT* from_end, size_t max) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char from[10]= {0};
+    assert(f.length(mbs, from, from+10, 0) == 0);
+    assert(f.length(mbs, from, from+10, 9) == 9);
+    assert(f.length(mbs, from, from+10, 10) == 10);
+    assert(f.length(mbs, from, from+10, 11) == 10);
+    assert(f.length(mbs, from, from+10, 100) == 10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_max_length.pass.cpp
new file mode 100644
index 0000000..4346621
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_max_length.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// int max_length() const throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.max_length() == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_out.pass.cpp
new file mode 100644
index 0000000..942e295
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_out.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// result out(stateT& state,
+//            const internT* from, const internT* from_end, const internT*& from_next,
+//            externT* to, externT* to_end, externT*& to_next) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const std::basic_string<F::intern_type> from("some text");
+    std::vector<char> to(from.size());
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char* from_next = 0;
+    char* to_next = 0;
+    assert(f.out(mbs, from.data(), from.data() + from.size(), from_next,
+                      to.data(), to.data() + to.size(), to_next) == F::noconv);
+    assert(from_next == from.data());
+    assert(to_next == to.data());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_unshift.pass.cpp
new file mode 100644
index 0000000..e71caaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/char_unshift.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<char, char, mbstate_t>
+
+// result unshift(stateT& state,
+//                externT* to, externT* to_end, externT*& to_next) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<char, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    std::vector<char> to(3);
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    char* to_next = 0;
+    assert(f.unshift(mbs, to.data(), to.data() + to.size(), to_next) == F::noconv);
+    assert(to_next == to.data());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/utf_sanity_check.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/utf_sanity_check.pass.cpp
new file mode 100644
index 0000000..03185d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/utf_sanity_check.pass.cpp
@@ -0,0 +1,221 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// template <> class codecvt<char32_t, char, mbstate_t>
+// template <> class codecvt<char16_t, char, mbstate_t>
+// template <> class codecvt<char32_t, char8_t, mbstate_t> // C++20
+// template <> class codecvt<char16_t, char8_t, mbstate_t> // C++20
+// template <> class codecvt<char32_t, char16_t, mbstate_t>  // extension
+
+// sanity check
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  typedef std::codecvt<char32_t, char, std::mbstate_t> F32_8;
+  typedef std::codecvt<char16_t, char, std::mbstate_t> F16_8;
+  typedef std::codecvt_utf16<char32_t> F32_16;
+  std::locale l = std::locale(std::locale::classic(), new F32_16);
+  const F32_8& f32_8 = std::use_facet<F32_8>(std::locale::classic());
+  const F32_16& f32_16 = std::use_facet<F32_16>(l);
+  const F16_8& f16_8 = std::use_facet<F16_8>(std::locale::classic());
+  std::mbstate_t mbs32_8 = {};
+  std::mbstate_t mbs16_8 = {};
+  std::mbstate_t mbs32_16 = {};
+  F32_8::intern_type* c32p;
+  F16_8::intern_type* c16p;
+  F32_8::extern_type* c8p;
+  const F32_8::intern_type* c_c32p;
+  const F16_8::intern_type* c_c16p;
+  const F32_8::extern_type* c_c8p;
+  F32_8::intern_type c32;
+  F16_8::intern_type c16[2];
+  char c16c[4];
+  char* c16cp;
+  F32_8::extern_type c8[4];
+
+#if TEST_STD_VER > 17
+  typedef std::codecvt<char32_t, char8_t, std::mbstate_t> F32_8T;
+  typedef std::codecvt<char16_t, char8_t, std::mbstate_t> F16_8T;
+  const F32_8T& f32_8t = std::use_facet<F32_8T>(std::locale::classic());
+  const F16_8T& f16_8t = std::use_facet<F16_8T>(std::locale::classic());
+  std::mbstate_t mbs32_8t = {};
+  std::mbstate_t mbs16_8t = {};
+  F32_8T::extern_type* c8tp;
+  const F32_8T::extern_type* c_c8tp;
+  F32_8T::extern_type c8t[4];
+#endif
+
+  for (F32_8::intern_type c32x = 0; c32x < 0x110003; ++c32x) {
+    if ((0xD800 <= c32x && c32x < 0xE000) || c32x >= 0x110000) {
+#ifndef _MSVC_STL_VERSION // Don't ask; eldritch horrors.
+      assert(f32_16.out(mbs32_16, &c32x, &c32x + 1, c_c32p, c16c + 0, c16c + 4,
+                        c16cp) == F32_8::error);
+      assert(f32_8.out(mbs32_8, &c32x, &c32x + 1, c_c32p, c8, c8 + 4, c8p) ==
+             F32_8::error);
+#endif
+
+#if TEST_STD_VER > 17
+      assert(f32_8t.out(mbs32_8t, &c32x, &c32x + 1, c_c32p, c8t, c8t + 4,
+                        c8tp) == F32_8T::error);
+#endif
+    } else {
+      assert(f32_16.out(mbs32_16, &c32x, &c32x + 1, c_c32p, c16c, c16c + 4,
+                        c16cp) == F32_8::ok);
+      assert(c_c32p - &c32x == 1);
+      if (c32x < 0x10000)
+        assert(c16cp - c16c == 2);
+      else
+        assert(c16cp - c16c == 4);
+      for (int i = 0; i < (c16cp - c16c) / 2; ++i)
+        c16[i] = (char16_t)((unsigned char)c16c[2 * i] << 8 |
+                            (unsigned char)c16c[2 * i + 1]);
+      c_c16p = c16 + (c16cp - c16c) / 2;
+      assert(f16_8.out(mbs16_8, c16, c_c16p, c_c16p, c8, c8 + 4, c8p) ==
+             F32_8::ok);
+      if (c32x < 0x10000)
+        assert(c_c16p - c16 == 1);
+      else
+        assert(c_c16p - c16 == 2);
+      if (c32x < 0x80)
+        assert(c8p - c8 == 1);
+      else if (c32x < 0x800)
+        assert(c8p - c8 == 2);
+      else if (c32x < 0x10000)
+        assert(c8p - c8 == 3);
+      else
+        assert(c8p - c8 == 4);
+      c_c8p = c8p;
+      assert(f32_8.in(mbs32_8, c8, c_c8p, c_c8p, &c32, &c32 + 1, c32p) ==
+             F32_8::ok);
+      if (c32x < 0x80)
+        assert(c_c8p - c8 == 1);
+      else if (c32x < 0x800)
+        assert(c_c8p - c8 == 2);
+      else if (c32x < 0x10000)
+        assert(c_c8p - c8 == 3);
+      else
+        assert(c_c8p - c8 == 4);
+      assert(c32p - &c32 == 1);
+      assert(c32 == c32x);
+      assert(f32_8.out(mbs32_8, &c32x, &c32x + 1, c_c32p, c8, c8 + 4, c8p) ==
+             F32_8::ok);
+      assert(c_c32p - &c32x == 1);
+      if (c32x < 0x80)
+        assert(c8p - c8 == 1);
+      else if (c32x < 0x800)
+        assert(c8p - c8 == 2);
+      else if (c32x < 0x10000)
+        assert(c8p - c8 == 3);
+      else
+        assert(c8p - c8 == 4);
+      c_c8p = c8p;
+      assert(f16_8.in(mbs16_8, c8, c_c8p, c_c8p, c16, c16 + 2, c16p) ==
+             F32_8::ok);
+      if (c32x < 0x80)
+        assert(c_c8p - c8 == 1);
+      else if (c32x < 0x800)
+        assert(c_c8p - c8 == 2);
+      else if (c32x < 0x10000)
+        assert(c_c8p - c8 == 3);
+      else
+        assert(c_c8p - c8 == 4);
+      if (c32x < 0x10000)
+        assert(c16p - c16 == 1);
+      else
+        assert(c16p - c16 == 2);
+      for (int i = 0; i < c16p - c16; ++i) {
+        c16c[2 * i] = static_cast<char>(c16[i] >> 8);
+        c16c[2 * i + 1] = static_cast<char>(c16[i]);
+      }
+      const char* c_c16cp = c16c + (c16p - c16) * 2;
+      assert(f32_16.in(mbs32_16, c16c, c_c16cp, c_c16cp, &c32, &c32 + 1,
+                       c32p) == F32_8::ok);
+      if (c32x < 0x10000)
+        assert(c_c16cp - c16c == 2);
+      else
+        assert(c_c16cp - c16c == 4);
+      assert(c32p - &c32 == 1);
+      assert(c32 == c32x);
+
+#if TEST_STD_VER > 17
+      assert(f32_8t.out(mbs32_8t, &c32x, &c32x + 1, c_c32p, c8t, c8t + 4,
+                        c8tp) == F32_8T::ok);
+      assert(c_c32p - &c32x == 1);
+      if (c32x < 0x80)
+        assert(c8tp - c8t == 1);
+      else if (c32x < 0x800)
+        assert(c8tp - c8t == 2);
+      else if (c32x < 0x10000)
+        assert(c8tp - c8t == 3);
+      else
+        assert(c8tp - c8t == 4);
+      c_c8tp = c8tp;
+      assert(f16_8t.in(mbs16_8t, c8t, c_c8tp, c_c8tp, c16, c16 + 2, c16p) ==
+             F16_8T::ok);
+      if (c32x < 0x80)
+        assert(c_c8tp - c8t == 1);
+      else if (c32x < 0x800)
+        assert(c_c8tp - c8t == 2);
+      else if (c32x < 0x10000)
+        assert(c_c8tp - c8t == 3);
+      else
+        assert(c_c8tp - c8t == 4);
+      if (c32x < 0x10000)
+        assert(c16p - c16 == 1);
+      else
+        assert(c16p - c16 == 2);
+      c_c16p = c16p;
+      assert(f16_8t.out(mbs16_8t, c16, c_c16p, c_c16p, c8t, c8t + 4, c8tp) ==
+             F16_8T::ok);
+      if (c32x < 0x10000)
+        assert(c_c16p - c16 == 1);
+      else
+        assert(c_c16p - c16 == 2);
+      if (c32x < 0x80)
+        assert(c8tp - c8t == 1);
+      else if (c32x < 0x800)
+        assert(c8tp - c8t == 2);
+      else if (c32x < 0x10000)
+        assert(c8tp - c8t == 3);
+      else
+        assert(c8tp - c8t == 4);
+      c_c8tp = c8tp;
+      assert(f32_8t.in(mbs32_8t, c8t, c_c8tp, c_c8tp, &c32, &c32 + 1, c32p) ==
+             F32_8T::ok);
+      if (c32x < 0x80)
+        assert(c_c8tp - c8t == 1);
+      else if (c32x < 0x800)
+        assert(c_c8tp - c8t == 2);
+      else if (c32x < 0x10000)
+        assert(c_c8tp - c8t == 3);
+      else
+        assert(c_c8tp - c8t == 4);
+      assert(c32p - &c32 == 1);
+      assert(c32 == c32x);
+#endif
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_always_noconv.pass.cpp
new file mode 100644
index 0000000..6da9a6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_always_noconv.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// bool always_noconv() const throw();
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(!f.always_noconv());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_encoding.pass.cpp
new file mode 100644
index 0000000..0e7e9f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_encoding.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// int encoding() const throw();
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.encoding() == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_in.pass.cpp
new file mode 100644
index 0000000..075409f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_in.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// result in(stateT& state,
+//           const externT* from, const externT* from_end, const externT*& from_next,
+//           internT* to, internT* to_end, internT*& to_next) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const std::basic_string<F::extern_type> from("some text");
+    const std::basic_string<F::intern_type> expected(from.begin(), from.end());
+    std::basic_string<F::intern_type> to(from.size(), F::intern_type());
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const F::extern_type* from_next = 0;
+    F::intern_type* to_next = 0;
+    F::result r = f.in(mbs, from.data(), from.data() + from.size(), from_next,
+                            &to[0], &to[0] + to.size(), to_next);
+    assert(r == F::ok);
+    assert(static_cast<std::size_t>(from_next - from.data()) == from.size());
+    assert(static_cast<std::size_t>(to_next - to.data()) == expected.size());
+    assert(static_cast<std::size_t>(to_next - to.data()) == expected.size());
+    assert(to == expected);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_length.pass.cpp
new file mode 100644
index 0000000..7ff9c8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_length.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// int length(stateT& state, const externT* from, const externT* from_end, size_t max) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    const char* from = "123467890";
+    assert(f.length(mbs, from, from+10, 0) == 0);
+    assert(f.length(mbs, from, from+10, 9) == 9);
+    assert(f.length(mbs, from, from+10, 10) == 10);
+    assert(f.length(mbs, from, from+10, 11) == 10);
+    assert(f.length(mbs, from, from+10, 100) == 10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_max_length.pass.cpp
new file mode 100644
index 0000000..6c5b223
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_max_length.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// int max_length() const throw();
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    assert(f.max_length() == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_out.pass.cpp
new file mode 100644
index 0000000..d037fbb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_out.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// result out(stateT& state,
+//            const internT* from, const internT* from_end, const internT*& from_next,
+//            externT* to, externT* to_end, externT*& to_next) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+#include <cstring>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    const F& f = std::use_facet<F>(l);
+    {
+        const std::basic_string<F::intern_type> from(L"some text");
+        std::vector<char> to(from.size()+1);
+        std::mbstate_t mbs = {};
+        const F::intern_type* from_next = 0;
+        char* to_next = 0;
+        F::result r = f.out(mbs, from.data(), from.data() + from.size(), from_next,
+                                 to.data(), to.data() + to.size(), to_next);
+        assert(r == F::ok);
+        assert(static_cast<std::size_t>(from_next - from.data()) == from.size());
+        assert(static_cast<std::size_t>(to_next - to.data()) == from.size());
+        assert(to.data() == std::string("some text"));
+    }
+    {
+        std::basic_string<F::intern_type> from(L"some text");
+        from[4] = '\0';
+        std::vector<char> to(from.size()+1);
+        std::mbstate_t mbs = {};
+        const F::intern_type* from_next = 0;
+        char* to_next = 0;
+        F::result r = f.out(mbs, from.data(), from.data() + from.size(), from_next,
+                                 to.data(), to.data() + to.size(), to_next);
+        assert(r == F::ok);
+        assert(static_cast<std::size_t>(from_next - from.data()) == from.size());
+        assert(static_cast<std::size_t>(to_next - to.data()) == from.size());
+        assert(memcmp(to.data(), "some\0text", from.size()) == 0);
+    }
+    {
+        std::basic_string<F::intern_type> from(L"some text");
+        std::vector<char> to(from.size()-1);
+        std::mbstate_t mbs = {};
+        const F::intern_type* from_next = 0;
+        char* to_next = 0;
+        F::result r = f.out(mbs, from.data(), from.data() + from.size(), from_next,
+                                 to.data(), to.data() + to.size()-1, to_next);
+        assert(r == F::partial);
+        assert(static_cast<std::size_t>(from_next - from.data()) == to.size()-1);
+        assert(static_cast<std::size_t>(to_next - to.data()) == to.size()-1);
+        assert(to.data() == std::string("some te"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_unshift.pass.cpp
new file mode 100644
index 0000000..c567197
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.members/wchar_t_unshift.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <> class codecvt<wchar_t, char, mbstate_t>
+
+// result unshift(stateT& state,
+//                externT* to, externT* to_end, externT*& to_next) const;
+
+// XFAIL: no-wide-characters
+
+// This is pretty much just an "are you breathing" test
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    std::vector<F::extern_type> to(3);
+    const F& f = std::use_facet<F>(l);
+    std::mbstate_t mbs = {};
+    F::extern_type* to_next = 0;
+    assert(f.unshift(mbs, to.data(), to.data() + to.size(), to_next) == F::ok);
+    assert(to_next == to.data());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/locale.codecvt.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char.pass.cpp
new file mode 100644
index 0000000..f474f40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <>
+// class codecvt<char, char, mbstate_t>
+//     : public locale::facet,
+//       public codecvt_base
+// {
+// public:
+//     typedef char      intern_type;
+//     typedef char      extern_type;
+//     typedef mbstate_t state_type;
+//     ...
+// };
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt<char, char, std::mbstate_t> F;
+    static_assert((std::is_base_of<std::locale::facet, F>::value), "");
+    static_assert((std::is_base_of<std::codecvt_base, F>::value), "");
+    static_assert((std::is_same<F::intern_type, char>::value), "");
+    static_assert((std::is_same<F::extern_type, char>::value), "");
+    static_assert((std::is_same<F::state_type, std::mbstate_t>::value), "");
+    std::locale l = std::locale::classic();
+    assert(std::has_facet<F>(l));
+    const F& f = std::use_facet<F>(l);
+    ((void)f); // Prevent unused warning
+    (void)F::id;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char16_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char16_t.pass.cpp
new file mode 100644
index 0000000..4428d77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char16_t.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <>
+// class codecvt<char16_t, char, mbstate_t>
+//     : public locale::facet,
+//       public codecvt_base
+// {
+// public:
+//     typedef char16_t  intern_type;
+//     typedef char      extern_type;
+//     typedef mbstate_t state_type;
+//     ...
+// };
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt<char16_t, char, std::mbstate_t> F;
+    static_assert((std::is_base_of<std::locale::facet, F>::value), "");
+    static_assert((std::is_base_of<std::codecvt_base, F>::value), "");
+    static_assert((std::is_same<F::intern_type, char16_t>::value), "");
+    static_assert((std::is_same<F::extern_type, char>::value), "");
+    static_assert((std::is_same<F::state_type, std::mbstate_t>::value), "");
+    std::locale l = std::locale::classic();
+    assert(std::has_facet<F>(l));
+    const F& f = std::use_facet<F>(l);
+    (void)F::id;
+    ((void)f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char16_t_char8_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char16_t_char8_t.pass.cpp
new file mode 100644
index 0000000..82d7e68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char16_t_char8_t.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <>
+// class codecvt<char16_t, char8_t, mbstate_t>
+//     : public locale::facet,
+//       public codecvt_base
+// {
+// public:
+//     typedef char16_t  intern_type;
+//     typedef char8_t   extern_type;
+//     typedef mbstate_t state_type;
+//     ...
+// };
+
+#include <cassert>
+#include <locale>
+#include <type_traits>
+
+int main(int, char**) {
+  using F = std::codecvt<char16_t, char8_t, std::mbstate_t>;
+  static_assert(std::is_base_of_v<std::locale::facet, F>);
+  static_assert(std::is_base_of_v<std::codecvt_base, F>);
+  static_assert(std::is_same_v<F::intern_type, char16_t>);
+  static_assert(std::is_same_v<F::extern_type, char8_t>);
+  static_assert(std::is_same_v<F::state_type, std::mbstate_t>);
+  std::locale l = std::locale::classic();
+  assert(std::has_facet<F>(l));
+  const F& f = std::use_facet<F>(l);
+  (void)F::id;
+  (void)f;
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char32_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char32_t.pass.cpp
new file mode 100644
index 0000000..e207625
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char32_t.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <>
+// class codecvt<char32_t, char, mbstate_t>
+//     : public locale::facet,
+//       public codecvt_base
+// {
+// public:
+//     typedef char32_t  intern_type;
+//     typedef char      extern_type;
+//     typedef mbstate_t state_type;
+//     ...
+// };
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt<char32_t, char, std::mbstate_t> F;
+    static_assert((std::is_base_of<std::locale::facet, F>::value), "");
+    static_assert((std::is_base_of<std::codecvt_base, F>::value), "");
+    static_assert((std::is_same<F::intern_type, char32_t>::value), "");
+    static_assert((std::is_same<F::extern_type, char>::value), "");
+    static_assert((std::is_same<F::state_type, std::mbstate_t>::value), "");
+    std::locale l = std::locale::classic();
+    assert(std::has_facet<F>(l));
+    const F& f = std::use_facet<F>(l);
+    (void)F::id;
+    ((void)f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char32_t_char8_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char32_t_char8_t.pass.cpp
new file mode 100644
index 0000000..233a2c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char32_t_char8_t.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// <locale>
+
+// template <>
+// class codecvt<char32_t, char8_t, mbstate_t>
+//     : public locale::facet,
+//       public codecvt_base
+// {
+// public:
+//     typedef char32_t  intern_type;
+//     typedef char8_t   extern_type;
+//     typedef mbstate_t state_type;
+//     ...
+// };
+
+#include <cassert>
+#include <locale>
+#include <type_traits>
+
+int main(int, char**) {
+  using F = std::codecvt<char32_t, char8_t, std::mbstate_t>;
+  static_assert(std::is_base_of_v<std::locale::facet, F>);
+  static_assert(std::is_base_of_v<std::codecvt_base, F>);
+  static_assert(std::is_same_v<F::intern_type, char32_t>);
+  static_assert(std::is_same_v<F::extern_type, char8_t>);
+  static_assert(std::is_same_v<F::state_type, std::mbstate_t>);
+  std::locale l = std::locale::classic();
+  assert(std::has_facet<F>(l));
+  const F& f = std::use_facet<F>(l);
+  (void)F::id;
+  (void)f;
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_wchar_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_wchar_t.pass.cpp
new file mode 100644
index 0000000..7b2cea2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.codecvt/types_wchar_t.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <>
+// class codecvt<wchar_t, char, mbstate_t>
+//     : public locale::facet,
+//       public codecvt_base
+// {
+// public:
+//     typedef wchar_t   intern_type;
+//     typedef char      extern_type;
+//     typedef mbstate_t state_type;
+//     ...
+// };
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt<wchar_t, char, std::mbstate_t> F;
+    static_assert((std::is_base_of<std::locale::facet, F>::value), "");
+    static_assert((std::is_base_of<std::codecvt_base, F>::value), "");
+    static_assert((std::is_same<F::intern_type, wchar_t>::value), "");
+    static_assert((std::is_same<F::extern_type, char>::value), "");
+    static_assert((std::is_same<F::state_type, std::mbstate_t>::value), "");
+    std::locale l = std::locale::classic();
+    assert(std::has_facet<F>(l));
+    const F& f = std::use_facet<F>(l);
+    ((void)f); // Prevent unused warning
+    (void)F::id;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/is_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/is_1.pass.cpp
new file mode 100644
index 0000000..d08a712
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/is_1.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// bool is(mask m, charT c) const;
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+
+            assert(f.is(F::space, L' '));
+            assert(!f.is(F::space, L'A'));
+
+            assert(f.is(F::print, L' '));
+            assert(!f.is(F::print, L'\x07'));
+
+            assert(f.is(F::cntrl, L'\x07'));
+            assert(!f.is(F::cntrl, L' '));
+
+            assert(f.is(F::upper, L'A'));
+            assert(!f.is(F::upper, L'a'));
+
+            assert(f.is(F::lower, L'a'));
+            assert(!f.is(F::lower, L'A'));
+
+            assert(f.is(F::alpha, L'a'));
+            assert(!f.is(F::alpha, L'1'));
+
+            assert(f.is(F::digit, L'1'));
+            assert(!f.is(F::digit, L'a'));
+
+            assert(f.is(F::punct, L'.'));
+            assert(!f.is(F::punct, L'a'));
+
+            assert(f.is(F::xdigit, L'a'));
+            assert(!f.is(F::xdigit, L'g'));
+
+            assert(f.is(F::alnum, L'a'));
+            assert(!f.is(F::alnum, L'.'));
+
+            assert(f.is(F::graph, L'.'));
+            assert(!f.is(F::graph,  L'\x07'));
+
+            assert(f.is(F::alpha, L'\x00DA'));
+            assert(f.is(F::upper, L'\x00DA'));
+        }
+    }
+    {
+        std::locale l("C");
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+
+            assert(f.is(F::space, L' '));
+            assert(!f.is(F::space, L'A'));
+
+            assert(f.is(F::print, L' '));
+            assert(!f.is(F::print, L'\x07'));
+
+            assert(f.is(F::cntrl, L'\x07'));
+            assert(!f.is(F::cntrl, L' '));
+
+            assert(f.is(F::upper, L'A'));
+            assert(!f.is(F::upper, L'a'));
+
+            assert(f.is(F::lower, L'a'));
+            assert(!f.is(F::lower, L'A'));
+
+            assert(f.is(F::alpha, L'a'));
+            assert(!f.is(F::alpha, L'1'));
+
+            assert(f.is(F::digit, L'1'));
+            assert(!f.is(F::digit, L'a'));
+
+            assert(f.is(F::punct, L'.'));
+            assert(!f.is(F::punct, L'a'));
+
+            assert(f.is(F::xdigit, L'a'));
+            assert(!f.is(F::xdigit, L'g'));
+
+            assert(f.is(F::alnum, L'a'));
+            assert(!f.is(F::alnum, L'.'));
+
+            assert(f.is(F::graph, L'.'));
+            assert(!f.is(F::graph,  L'\x07'));
+
+#if defined(_WIN32)
+            // On Windows, these wchars are classified according to their
+            // Unicode interpretation even in the "C" locale.
+            assert(f.is(F::alpha, L'\x00DA'));
+            assert(f.is(F::upper, L'\x00DA'));
+#else
+            assert(!f.is(F::alpha, L'\x00DA'));
+            assert(!f.is(F::upper, L'\x00DA'));
+#endif
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/is_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/is_many.pass.cpp
new file mode 100644
index 0000000..8aa1aa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/is_many.pass.cpp
@@ -0,0 +1,260 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const charT* do_is(const charT* low, const charT* high, mask* vec) const;
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            const std::wstring in(L"\x00DA A\x07.a1");
+            std::vector<F::mask> m(in.size());
+            const wchar_t* h = f.is(in.data(), in.data() + in.size(), m.data());
+            assert(h == in.data() + in.size());
+
+            // L'\x00DA'
+            assert(!(m[0] & F::space));
+            assert( (m[0] & F::print));
+            assert(!(m[0] & F::cntrl));
+            assert( (m[0] & F::upper));
+            assert(!(m[0] & F::lower));
+            assert( (m[0] & F::alpha));
+            assert(!(m[0] & F::digit));
+            assert(!(m[0] & F::punct));
+            assert(!(m[0] & F::xdigit));
+            assert(!(m[0] & F::blank));
+            assert( (m[0] & F::alnum));
+            assert( (m[0] & F::graph));
+
+            // L' '
+            assert( (m[1] & F::space));
+            assert( (m[1] & F::print));
+            assert(!(m[1] & F::cntrl));
+            assert(!(m[1] & F::upper));
+            assert(!(m[1] & F::lower));
+            assert(!(m[1] & F::alpha));
+            assert(!(m[1] & F::digit));
+            assert(!(m[1] & F::punct));
+            assert(!(m[1] & F::xdigit));
+            assert( (m[1] & F::blank));
+            assert(!(m[1] & F::alnum));
+            assert(!(m[1] & F::graph));
+
+            // L'A'
+            assert(!(m[2] & F::space));
+            assert( (m[2] & F::print));
+            assert(!(m[2] & F::cntrl));
+            assert( (m[2] & F::upper));
+            assert(!(m[2] & F::lower));
+            assert( (m[2] & F::alpha));
+            assert(!(m[2] & F::digit));
+            assert(!(m[2] & F::punct));
+            assert( (m[2] & F::xdigit));
+            assert(!(m[2] & F::blank));
+            assert( (m[2] & F::alnum));
+            assert( (m[2] & F::graph));
+
+            // L'\x07'
+            assert(!(m[3] & F::space));
+            assert(!(m[3] & F::print));
+            assert( (m[3] & F::cntrl));
+            assert(!(m[3] & F::upper));
+            assert(!(m[3] & F::lower));
+            assert(!(m[3] & F::alpha));
+            assert(!(m[3] & F::digit));
+            assert(!(m[3] & F::punct));
+            assert(!(m[3] & F::xdigit));
+            assert(!(m[3] & F::blank));
+            assert(!(m[3] & F::alnum));
+            assert(!(m[3] & F::graph));
+
+            // L'.'
+            assert(!(m[4] & F::space));
+            assert( (m[4] & F::print));
+            assert(!(m[4] & F::cntrl));
+            assert(!(m[4] & F::upper));
+            assert(!(m[4] & F::lower));
+            assert(!(m[4] & F::alpha));
+            assert(!(m[4] & F::digit));
+            assert( (m[4] & F::punct));
+            assert(!(m[4] & F::xdigit));
+            assert(!(m[4] & F::blank));
+            assert(!(m[4] & F::alnum));
+            assert( (m[4] & F::graph));
+
+            // L'a'
+            assert(!(m[5] & F::space));
+            assert( (m[5] & F::print));
+            assert(!(m[5] & F::cntrl));
+            assert(!(m[5] & F::upper));
+            assert( (m[5] & F::lower));
+            assert( (m[5] & F::alpha));
+            assert(!(m[5] & F::digit));
+            assert(!(m[5] & F::punct));
+            assert( (m[5] & F::xdigit));
+            assert(!(m[5] & F::blank));
+            assert( (m[5] & F::alnum));
+            assert( (m[5] & F::graph));
+
+            // L'1'
+            assert(!(m[6] & F::space));
+            assert( (m[6] & F::print));
+            assert(!(m[6] & F::cntrl));
+            assert(!(m[6] & F::upper));
+            assert(!(m[6] & F::lower));
+            assert(!(m[6] & F::alpha));
+            assert( (m[6] & F::digit));
+            assert(!(m[6] & F::punct));
+            assert( (m[6] & F::xdigit));
+            assert(!(m[6] & F::blank));
+            assert( (m[6] & F::alnum));
+            assert( (m[6] & F::graph));
+        }
+    }
+    {
+        std::locale l("C");
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            const std::wstring in(L"\x00DA A\x07.a1");
+            std::vector<F::mask> m(in.size());
+            const wchar_t* h = f.is(in.data(), in.data() + in.size(), m.data());
+            assert(h == in.data() + in.size());
+
+            // L'\x00DA'
+            assert(!(m[0] & F::space));
+            assert(!(m[0] & F::cntrl));
+            assert(!(m[0] & F::lower));
+            assert(!(m[0] & F::digit));
+            assert(!(m[0] & F::punct));
+            assert(!(m[0] & F::xdigit));
+            assert(!(m[0] & F::blank));
+#if defined(_WIN32)
+            // On Windows, these wchars are classified according to their
+            // Unicode interpretation even in the "C" locale.
+            assert( (m[0] & F::alpha));
+            assert( (m[0] & F::upper));
+            assert( (m[0] & F::print));
+            assert( (m[0] & F::alnum));
+            assert( (m[0] & F::graph));
+#else
+            assert(!(m[0] & F::alpha));
+            assert(!(m[0] & F::upper));
+            assert(!(m[0] & F::print));
+            assert(!(m[0] & F::alnum));
+            assert(!(m[0] & F::graph));
+#endif
+
+            // L' '
+            assert( (m[1] & F::space));
+            assert( (m[1] & F::print));
+            assert(!(m[1] & F::cntrl));
+            assert(!(m[1] & F::upper));
+            assert(!(m[1] & F::lower));
+            assert(!(m[1] & F::alpha));
+            assert(!(m[1] & F::digit));
+            assert(!(m[1] & F::punct));
+            assert(!(m[1] & F::xdigit));
+            assert( (m[1] & F::blank));
+            assert(!(m[1] & F::alnum));
+            assert(!(m[1] & F::graph));
+
+            // L'A'
+            assert(!(m[2] & F::space));
+            assert( (m[2] & F::print));
+            assert(!(m[2] & F::cntrl));
+            assert( (m[2] & F::upper));
+            assert(!(m[2] & F::lower));
+            assert( (m[2] & F::alpha));
+            assert(!(m[2] & F::digit));
+            assert(!(m[2] & F::punct));
+            assert( (m[2] & F::xdigit));
+            assert(!(m[2] & F::blank));
+            assert( (m[2] & F::alnum));
+            assert( (m[2] & F::graph));
+
+            // L'\x07'
+            assert(!(m[3] & F::space));
+            assert(!(m[3] & F::print));
+            assert( (m[3] & F::cntrl));
+            assert(!(m[3] & F::upper));
+            assert(!(m[3] & F::lower));
+            assert(!(m[3] & F::alpha));
+            assert(!(m[3] & F::digit));
+            assert(!(m[3] & F::punct));
+            assert(!(m[3] & F::xdigit));
+            assert(!(m[3] & F::blank));
+            assert(!(m[3] & F::alnum));
+            assert(!(m[3] & F::graph));
+
+            // L'.'
+            assert(!(m[4] & F::space));
+            assert( (m[4] & F::print));
+            assert(!(m[4] & F::cntrl));
+            assert(!(m[4] & F::upper));
+            assert(!(m[4] & F::lower));
+            assert(!(m[4] & F::alpha));
+            assert(!(m[4] & F::digit));
+            assert( (m[4] & F::punct));
+            assert(!(m[4] & F::xdigit));
+            assert(!(m[4] & F::blank));
+            assert(!(m[4] & F::alnum));
+            assert( (m[4] & F::graph));
+
+            // L'a'
+            assert(!(m[5] & F::space));
+            assert( (m[5] & F::print));
+            assert(!(m[5] & F::cntrl));
+            assert(!(m[5] & F::upper));
+            assert( (m[5] & F::lower));
+            assert( (m[5] & F::alpha));
+            assert(!(m[5] & F::digit));
+            assert(!(m[5] & F::punct));
+            assert( (m[5] & F::xdigit));
+            assert(!(m[5] & F::blank));
+            assert( (m[5] & F::alnum));
+            assert( (m[5] & F::graph));
+
+            // L'1'
+            assert(!(m[6] & F::space));
+            assert( (m[6] & F::print));
+            assert(!(m[6] & F::cntrl));
+            assert(!(m[6] & F::upper));
+            assert(!(m[6] & F::lower));
+            assert(!(m[6] & F::alpha));
+            assert( (m[6] & F::digit));
+            assert(!(m[6] & F::punct));
+            assert( (m[6] & F::xdigit));
+            assert(!(m[6] & F::blank));
+            assert( (m[6] & F::alnum));
+            assert( (m[6] & F::graph));
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/mask.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/mask.pass.cpp
new file mode 100644
index 0000000..6f2452e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/mask.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// bool is(mask m, charT c) const;
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l("C");
+    {
+        typedef std::ctype<char> CF;
+        const CF& cf = std::use_facet<CF>(l);
+
+        // NOTE:
+        // The ctype masks in Newlib don't form a proper bitmask because
+        // the mask is only 8 bits wide, and there are more than 8 mask
+        // kinds. This means that the mask for alpha is (_U | _L), which
+        // is tricky to match in the do_is implementation because in
+        // [22.4.1.1.2 2] the standard specifies that the match code behaves
+        // like (m & M) != 0, but following this exactly would give false
+        // positives for characters that are both 'upper' and 'alpha', but
+        // not 'lower', for example.
+        assert( cf.is(CF::upper,  'A'));
+        assert(!cf.is(CF::lower,  'A'));
+        assert( cf.is(CF::alpha,  'A'));
+
+        assert(!cf.is(CF::upper,  'a'));
+        assert( cf.is(CF::lower,  'a'));
+        assert( cf.is(CF::alpha,  'a'));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::ctype<wchar_t> WF;
+        const WF& wf = std::use_facet<WF>(l);
+
+        assert( wf.is(WF::upper, L'A'));
+        assert(!wf.is(WF::lower, L'A'));
+        assert( wf.is(WF::alpha, L'A'));
+
+        assert(!wf.is(WF::upper, L'a'));
+        assert( wf.is(WF::lower, L'a'));
+        assert( wf.is(WF::alpha, L'a'));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_1.pass.cpp
new file mode 100644
index 0000000..c1b4706
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_1.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_CA.ISO8859-1
+// XFAIL: no-wide-characters
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// char narrow(charT c, char dfault) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::string(LOCALE_fr_CA_ISO8859_1));
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+
+            assert(f.narrow(L' ', '*') == ' ');
+            assert(f.narrow(L'A', '*') == 'A');
+            assert(f.narrow(L'\x07', '*') == '\x07');
+            assert(f.narrow(L'.', '*') == '.');
+            assert(f.narrow(L'a', '*') == 'a');
+            assert(f.narrow(L'1', '*') == '1');
+            assert(f.narrow(L'\xDA', '*') == '\xDA');
+        }
+    }
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+
+            assert(f.narrow(L' ', '*') == ' ');
+            assert(f.narrow(L'A', '*') == 'A');
+            assert(f.narrow(L'\x07', '*') == '\x07');
+            assert(f.narrow(L'.', '*') == '.');
+            assert(f.narrow(L'a', '*') == 'a');
+            assert(f.narrow(L'1', '*') == '1');
+            assert(f.narrow(L'\xDA', '*') == '*');
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_many.pass.cpp
new file mode 100644
index 0000000..e33486c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/narrow_many.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_CA.ISO8859-1
+// XFAIL: no-wide-characters
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const charT* narrow(const charT* low, const charT*, char dfault, char* to) const;
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_fr_CA_ISO8859_1);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            std::wstring in(L" A\x07.a1\xDA");
+            std::vector<char> v(in.size());
+
+            assert(f.narrow(&in[0], in.data() + in.size(), '*', v.data()) == in.data() + in.size());
+            assert(v[0] == ' ');
+            assert(v[1] == 'A');
+            assert(v[2] == '\x07');
+            assert(v[3] == '.');
+            assert(v[4] == 'a');
+            assert(v[5] == '1');
+            assert(v[6] == '\xDA');
+        }
+    }
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            std::wstring in(L" A\x07.a1\xDA");
+            std::vector<char> v(in.size());
+
+            assert(f.narrow(&in[0], in.data() + in.size(), '*', v.data()) == in.data() + in.size());
+            assert(v[0] == ' ');
+            assert(v[1] == 'A');
+            assert(v[2] == '\x07');
+            assert(v[3] == '.');
+            assert(v[4] == 'a');
+            assert(v[5] == '1');
+            assert(v[6] == '*');
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_is.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_is.pass.cpp
new file mode 100644
index 0000000..540efde
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_is.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const charT* scan_is(mask m, const charT* low, const charT* high) const;
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            const std::wstring in(L"\x00DA A\x07.a1");
+            std::vector<F::mask> m(in.size());
+            assert(f.scan_is(F::space, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_is(F::print, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_is(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 3);
+            assert(f.scan_is(F::upper, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_is(F::lower, in.data(), in.data() + in.size()) - in.data() == 5);
+            assert(f.scan_is(F::alpha, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_is(F::digit, in.data(), in.data() + in.size()) - in.data() == 6);
+            assert(f.scan_is(F::punct, in.data(), in.data() + in.size()) - in.data() == 4);
+            assert(f.scan_is(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 2);
+            assert(f.scan_is(F::blank, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_is(F::alnum, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_is(F::graph, in.data(), in.data() + in.size()) - in.data() == 0);
+        }
+    }
+    {
+        std::locale l("C");
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            const std::wstring in(L"\x00DA A\x07.a1");
+            std::vector<F::mask> m(in.size());
+            assert(f.scan_is(F::space, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_is(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 3);
+            assert(f.scan_is(F::lower, in.data(), in.data() + in.size()) - in.data() == 5);
+            assert(f.scan_is(F::digit, in.data(), in.data() + in.size()) - in.data() == 6);
+            assert(f.scan_is(F::punct, in.data(), in.data() + in.size()) - in.data() == 4);
+            assert(f.scan_is(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 2);
+            assert(f.scan_is(F::blank, in.data(), in.data() + in.size()) - in.data() == 1);
+#if !defined(_WIN32)
+            // On Windows, these wchars are classified according to their
+            // Unicode interpretation even in the "C" locale, where
+            // the scan_is function returns the same as above for the
+            // en_US.UTF-8 locale.
+            assert(f.scan_is(F::print, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_is(F::upper, in.data(), in.data() + in.size()) - in.data() == 2);
+            assert(f.scan_is(F::alpha, in.data(), in.data() + in.size()) - in.data() == 2);
+            assert(f.scan_is(F::alnum, in.data(), in.data() + in.size()) - in.data() == 2);
+            assert(f.scan_is(F::graph, in.data(), in.data() + in.size()) - in.data() == 2);
+#endif
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_not.pass.cpp
new file mode 100644
index 0000000..73e3c13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/scan_not.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const charT* scan_not(mask m, const charT* low, const charT* high) const;
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            const std::wstring in(L"\x00DA A\x07.a1");
+            std::vector<F::mask> m(in.size());
+            assert(f.scan_not(F::space, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::print, in.data(), in.data() + in.size()) - in.data() == 3);
+            assert(f.scan_not(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::upper, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_not(F::lower, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::alpha, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_not(F::digit, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::punct, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::blank, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::alnum, in.data(), in.data() + in.size()) - in.data() == 1);
+            assert(f.scan_not(F::graph, in.data(), in.data() + in.size()) - in.data() == 1);
+        }
+    }
+    {
+        std::locale l("C");
+        {
+            typedef std::ctype<wchar_t> F;
+            const F& f = std::use_facet<F>(l);
+            const std::wstring in(L"\x00DA A\x07.a1");
+            std::vector<F::mask> m(in.size());
+            assert(f.scan_not(F::space, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::lower, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::digit, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::punct, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::blank, in.data(), in.data() + in.size()) - in.data() == 0);
+#if !defined(_WIN32)
+            // On Windows, these wchars are classified according to their
+            // Unicode interpretation even in the "C" locale, where
+            // the scan_is function returns the same as above for the
+            // en_US.UTF-8 locale.
+            assert(f.scan_not(F::print, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::upper, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::alpha, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::alnum, in.data(), in.data() + in.size()) - in.data() == 0);
+            assert(f.scan_not(F::graph, in.data(), in.data() + in.size()) - in.data() == 0);
+#endif
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/tolower_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/tolower_1.pass.cpp
new file mode 100644
index 0000000..49b56aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/tolower_1.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: win32-broken-utf8-wchar-ctype
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// charT tolower(charT) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.tolower(' ') == ' ');
+            assert(f.tolower('A') == 'a');
+            assert(f.tolower('\x07') == '\x07');
+            assert(f.tolower('.') == '.');
+            assert(f.tolower('a') == 'a');
+            assert(f.tolower('1') == '1');
+            assert(f.tolower('\xFA') == '\xFA');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.tolower(' ') == ' ');
+            assert(f.tolower('A') == 'a');
+            assert(f.tolower('\x07') == '\x07');
+            assert(f.tolower('.') == '.');
+            assert(f.tolower('a') == 'a');
+            assert(f.tolower('1') == '1');
+            assert(f.tolower('\xDA') == '\xDA');
+            assert(f.tolower('\xFA') == '\xFA');
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.tolower(L' ') == L' ');
+            assert(f.tolower(L'A') == L'a');
+            assert(f.tolower(L'\x07') == L'\x07');
+            assert(f.tolower(L'.') == L'.');
+            assert(f.tolower(L'a') == L'a');
+            assert(f.tolower(L'1') == L'1');
+            assert(f.tolower(L'\xDA') == L'\xFA');
+            assert(f.tolower(L'\xFA') == L'\xFA');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.tolower(L' ') == L' ');
+            assert(f.tolower(L'A') == L'a');
+            assert(f.tolower(L'\x07') == L'\x07');
+            assert(f.tolower(L'.') == L'.');
+            assert(f.tolower(L'a') == L'a');
+            assert(f.tolower(L'1') == L'1');
+            assert(f.tolower(L'\xDA') == L'\xDA');
+            assert(f.tolower(L'\xFA') == L'\xFA');
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/tolower_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/tolower_many.pass.cpp
new file mode 100644
index 0000000..952dcf4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/tolower_many.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: win32-broken-utf8-wchar-ctype
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const charT* tolower(charT* low, const charT* high) const;
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+            std::string in("c A\x07.a1");
+
+            assert(f.tolower(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == 'c');
+            assert(in[1] == ' ');
+            assert(in[2] == 'a');
+            assert(in[3] == '\x07');
+            assert(in[4] == '.');
+            assert(in[5] == 'a');
+            assert(in[6] == '1');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+            std::string in("\xDA A\x07.a1");
+
+            assert(f.tolower(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == '\xDA');
+            assert(in[1] == ' ');
+            assert(in[2] == 'a');
+            assert(in[3] == '\x07');
+            assert(in[4] == '.');
+            assert(in[5] == 'a');
+            assert(in[6] == '1');
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+            std::wstring in(L"\xDA A\x07.a1");
+
+            assert(f.tolower(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == L'\xFA');
+            assert(in[1] == L' ');
+            assert(in[2] == L'a');
+            assert(in[3] == L'\x07');
+            assert(in[4] == L'.');
+            assert(in[5] == L'a');
+            assert(in[6] == L'1');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+            std::wstring in(L"\xDA A\x07.a1");
+
+            assert(f.tolower(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == L'\xDA');
+            assert(in[1] == L' ');
+            assert(in[2] == L'a');
+            assert(in[3] == L'\x07');
+            assert(in[4] == L'.');
+            assert(in[5] == L'a');
+            assert(in[6] == L'1');
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/toupper_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/toupper_1.pass.cpp
new file mode 100644
index 0000000..24f8b3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/toupper_1.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: win32-broken-utf8-wchar-ctype
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// charT toupper(charT) const;
+
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.toupper(' ') == ' ');
+            assert(f.toupper('A') == 'A');
+            assert(f.toupper('\x07') == '\x07');
+            assert(f.toupper('.') == '.');
+            assert(f.toupper('a') == 'A');
+            assert(f.toupper('1') == '1');
+            assert(f.toupper('\xDA') == '\xDA');
+            assert(f.toupper('c') == 'C');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.toupper(' ') == ' ');
+            assert(f.toupper('A') == 'A');
+            assert(f.toupper('\x07') == '\x07');
+            assert(f.toupper('.') == '.');
+            assert(f.toupper('a') == 'A');
+            assert(f.toupper('1') == '1');
+            assert(f.toupper('\xDA') == '\xDA');
+            assert(f.toupper('\xFA') == '\xFA');
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.toupper(L' ') == L' ');
+            assert(f.toupper(L'A') == L'A');
+            assert(f.toupper(L'\x07') == L'\x07');
+            assert(f.toupper(L'.') == L'.');
+            assert(f.toupper(L'a') == L'A');
+            assert(f.toupper(L'1') == L'1');
+            assert(f.toupper(L'\xDA') == L'\xDA');
+            assert(f.toupper(L'\xFA') == L'\xDA');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.toupper(L' ') == L' ');
+            assert(f.toupper(L'A') == L'A');
+            assert(f.toupper(L'\x07') == L'\x07');
+            assert(f.toupper(L'.') == L'.');
+            assert(f.toupper(L'a') == L'A');
+            assert(f.toupper(L'1') == L'1');
+            assert(f.toupper(L'\xDA') == L'\xDA');
+            assert(f.toupper(L'\xFA') == L'\xFA');
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/toupper_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/toupper_many.pass.cpp
new file mode 100644
index 0000000..f507763
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/toupper_many.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: win32-broken-utf8-wchar-ctype
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const charT* toupper(charT* low, const charT* high) const;
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+            std::string in("c A\x07.a1");
+
+            assert(f.toupper(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == 'C');
+            assert(in[1] == ' ');
+            assert(in[2] == 'A');
+            assert(in[3] == '\x07');
+            assert(in[4] == '.');
+            assert(in[5] == 'A');
+            assert(in[6] == '1');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<char> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+            std::string in("\xFA A\x07.a1");
+
+            assert(f.toupper(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == '\xFA');
+            assert(in[1] == ' ');
+            assert(in[2] == 'A');
+            assert(in[3] == '\x07');
+            assert(in[4] == '.');
+            assert(in[5] == 'A');
+            assert(in[6] == '1');
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+            std::wstring in(L"\xFA A\x07.a1");
+
+            assert(f.toupper(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == L'\xDA');
+            assert(in[1] == L' ');
+            assert(in[2] == L'A');
+            assert(in[3] == L'\x07');
+            assert(in[4] == L'.');
+            assert(in[5] == L'A');
+            assert(in[6] == L'1');
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+            std::wstring in(L"\u00FA A\x07.a1");
+
+            assert(f.toupper(&in[0], in.data() + in.size()) == in.data() + in.size());
+            assert(in[0] == L'\u00FA');
+            assert(in[1] == L' ');
+            assert(in[2] == L'A');
+            assert(in[3] == L'\x07');
+            assert(in[4] == L'.');
+            assert(in[5] == L'A');
+            assert(in[6] == L'1');
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/types.pass.cpp
new file mode 100644
index 0000000..81760b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/types.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <locale>
+
+// template <class CharT>
+// class ctype_byname
+//     : public ctype<CharT>
+// {
+// public:
+//     explicit ctype_byname(const char*, size_t = 0);
+//     explicit ctype_byname(const string&, size_t = 0);
+//
+// protected:
+//     ~ctype_byname();
+// };
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            assert(std::has_facet<std::ctype_byname<char> >(l));
+            assert(&std::use_facet<std::ctype<char> >(l)
+                == &std::use_facet<std::ctype_byname<char> >(l));
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            assert(std::has_facet<std::ctype_byname<wchar_t> >(l));
+            assert(&std::use_facet<std::ctype<wchar_t> >(l)
+                == &std::use_facet<std::ctype_byname<wchar_t> >(l));
+        }
+#endif
+    }
+    {
+        std::locale l("C");
+        {
+            assert(std::has_facet<std::ctype_byname<char> >(l));
+            assert(&std::use_facet<std::ctype<char> >(l)
+                == &std::use_facet<std::ctype_byname<char> >(l));
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            assert(std::has_facet<std::ctype_byname<wchar_t> >(l));
+            assert(&std::use_facet<std::ctype<wchar_t> >(l)
+                == &std::use_facet<std::ctype_byname<wchar_t> >(l));
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp
new file mode 100644
index 0000000..bafdfce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_1.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: no-wide-characters
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// charT widen(char c) const;
+
+// I doubt this test is portable
+
+
+#include <locale>
+#include <cassert>
+#include <limits.h>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.widen(' ') == L' ');
+            assert(f.widen('A') == L'A');
+            assert(f.widen('\x07') == L'\x07');
+            assert(f.widen('.') == L'.');
+            assert(f.widen('a') == L'a');
+            assert(f.widen('1') == L'1');
+            assert(f.widen(char(-5)) == wchar_t(-1));
+        }
+    }
+    {
+        std::locale l;
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+
+            assert(f.widen(' ') == L' ');
+            assert(f.widen('A') == L'A');
+            assert(f.widen('\x07') == L'\x07');
+            assert(f.widen('.') == L'.');
+            assert(f.widen('a') == L'a');
+            assert(f.widen('1') == L'1');
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32)
+            assert(f.widen(char(-5)) == L'\u00fb');
+#else
+            assert(f.widen(char(-5)) == wchar_t(-1));
+#endif
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp
new file mode 100644
index 0000000..552eab1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype.byname/widen_many.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: no-wide-characters
+
+// <locale>
+
+// template <class charT> class ctype_byname;
+
+// const char* widen(const char* low, const char* high, charT* to) const;
+
+// I doubt this test is portable
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F(LOCALE_en_US_UTF_8));
+            F const& f = std::use_facet<F>(ll);
+            std::string in(" A\x07.a1\xfb");
+            std::vector<wchar_t> v(in.size());
+
+            assert(f.widen(&in[0], in.data() + in.size(), v.data()) == in.data() + in.size());
+            assert(v[0] == L' ');
+            assert(v[1] == L'A');
+            assert(v[2] == L'\x07');
+            assert(v[3] == L'.');
+            assert(v[4] == L'a');
+            assert(v[5] == L'1');
+            assert(v[6] == wchar_t(-1));
+        }
+    }
+    {
+        std::locale l("C");
+        {
+            typedef std::ctype_byname<wchar_t> F;
+            std::locale ll(l, new F("C"));
+            const F& f = std::use_facet<F>(ll);
+            std::string in(" A\x07.a1\xfb");
+            std::vector<wchar_t> v(in.size());
+
+            assert(f.widen(&in[0], in.data() + in.size(), v.data()) == in.data() + in.size());
+            assert(v[0] == L' ');
+            assert(v[1] == L'A');
+            assert(v[2] == L'\x07');
+            assert(v[3] == L'.');
+            assert(v[4] == L'a');
+            assert(v[5] == L'1');
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(_WIN32)
+            assert(v[6] == L'\xfb');
+#else
+            assert(v[6] == wchar_t(-1));
+#endif
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/ctor.pass.cpp
new file mode 100644
index 0000000..c40e644
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/ctor.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// explicit ctype(size_t refs = 0);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+class my_facet
+    : public std::ctype<C>
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : std::ctype<C>(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+template <class C> int my_facet<C>::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet<wchar_t>);
+        assert(my_facet<wchar_t>::count == 1);
+    }
+    assert(my_facet<wchar_t>::count == 0);
+    {
+        my_facet<wchar_t> f(1);
+        assert(my_facet<wchar_t>::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet<wchar_t>::count == 1);
+        }
+        assert(my_facet<wchar_t>::count == 1);
+    }
+    assert(my_facet<wchar_t>::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/is_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/is_1.pass.cpp
new file mode 100644
index 0000000..b2b5215
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/is_1.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// bool is(mask m, charT c) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.is(F::space, L' '));
+        assert(!f.is(F::space, L'A'));
+
+        assert(f.is(F::print, L' '));
+        assert(!f.is(F::print, L'\x07'));
+
+        assert(f.is(F::cntrl, L'\x07'));
+        assert(!f.is(F::cntrl, L' '));
+
+        assert(f.is(F::upper, L'A'));
+        assert(!f.is(F::upper, L'a'));
+
+        assert(f.is(F::lower, L'a'));
+        assert(!f.is(F::lower, L'A'));
+
+        assert(f.is(F::alpha, L'a'));
+        assert(!f.is(F::alpha, L'1'));
+
+        assert(f.is(F::digit, L'1'));
+        assert(!f.is(F::digit, L'a'));
+
+        assert(f.is(F::punct, L'.'));
+        assert(!f.is(F::punct, L'a'));
+
+        assert(f.is(F::xdigit, L'a'));
+        assert(!f.is(F::xdigit, L'g'));
+
+        assert(f.is(F::alnum, L'a'));
+        assert(!f.is(F::alnum, L'.'));
+
+        assert(f.is(F::graph, L'.'));
+        assert(!f.is(F::graph,  L'\x07'));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/is_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/is_many.pass.cpp
new file mode 100644
index 0000000..ca9f220
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/is_many.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const charT* do_is(const charT* low, const charT* high, mask* vec) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        const std::wstring in(L" A\x07.a1");
+        std::vector<F::mask> m(in.size());
+        const wchar_t* h = f.is(in.data(), in.data() + in.size(), m.data());
+        assert(h == in.data() + in.size());
+
+        // L' '
+        assert( (m[0] & F::space));
+        assert( (m[0] & F::print));
+        assert(!(m[0] & F::cntrl));
+        assert(!(m[0] & F::upper));
+        assert(!(m[0] & F::lower));
+        assert(!(m[0] & F::alpha));
+        assert(!(m[0] & F::digit));
+        assert(!(m[0] & F::punct));
+        assert(!(m[0] & F::xdigit));
+        assert( (m[0] & F::blank));
+        assert(!(m[0] & F::alnum));
+        assert(!(m[0] & F::graph));
+
+        // L'A'
+        assert(!(m[1] & F::space));
+        assert( (m[1] & F::print));
+        assert(!(m[1] & F::cntrl));
+        assert( (m[1] & F::upper));
+        assert(!(m[1] & F::lower));
+        assert( (m[1] & F::alpha));
+        assert(!(m[1] & F::digit));
+        assert(!(m[1] & F::punct));
+        assert( (m[1] & F::xdigit));
+        assert(!(m[1] & F::blank));
+        assert( (m[1] & F::alnum));
+        assert( (m[1] & F::graph));
+
+        // L'\x07'
+        assert(!(m[2] & F::space));
+        assert(!(m[2] & F::print));
+        assert( (m[2] & F::cntrl));
+        assert(!(m[2] & F::upper));
+        assert(!(m[2] & F::lower));
+        assert(!(m[2] & F::alpha));
+        assert(!(m[2] & F::digit));
+        assert(!(m[2] & F::punct));
+        assert(!(m[2] & F::xdigit));
+        assert(!(m[2] & F::blank));
+        assert(!(m[2] & F::alnum));
+        assert(!(m[2] & F::graph));
+
+        // L'.'
+        assert(!(m[3] & F::space));
+        assert( (m[3] & F::print));
+        assert(!(m[3] & F::cntrl));
+        assert(!(m[3] & F::upper));
+        assert(!(m[3] & F::lower));
+        assert(!(m[3] & F::alpha));
+        assert(!(m[3] & F::digit));
+        assert( (m[3] & F::punct));
+        assert(!(m[3] & F::xdigit));
+        assert(!(m[3] & F::blank));
+        assert(!(m[3] & F::alnum));
+        assert( (m[3] & F::graph));
+
+        // L'a'
+        assert(!(m[4] & F::space));
+        assert( (m[4] & F::print));
+        assert(!(m[4] & F::cntrl));
+        assert(!(m[4] & F::upper));
+        assert( (m[4] & F::lower));
+        assert( (m[4] & F::alpha));
+        assert(!(m[4] & F::digit));
+        assert(!(m[4] & F::punct));
+        assert( (m[4] & F::xdigit));
+        assert(!(m[4] & F::blank));
+        assert( (m[4] & F::alnum));
+        assert( (m[4] & F::graph));
+
+        // L'1'
+        assert(!(m[5] & F::space));
+        assert( (m[5] & F::print));
+        assert(!(m[5] & F::cntrl));
+        assert(!(m[5] & F::upper));
+        assert(!(m[5] & F::lower));
+        assert(!(m[5] & F::alpha));
+        assert( (m[5] & F::digit));
+        assert(!(m[5] & F::punct));
+        assert( (m[5] & F::xdigit));
+        assert(!(m[5] & F::blank));
+        assert( (m[5] & F::alnum));
+        assert( (m[5] & F::graph));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/narrow_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/narrow_1.pass.cpp
new file mode 100644
index 0000000..215abaf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/narrow_1.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// char narrow(charT c, char dfault) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.narrow(L' ', '*') == ' ');
+        assert(f.narrow(L'A', '*') == 'A');
+        assert(f.narrow(L'\x07', '*') == '\x07');
+        assert(f.narrow(L'.', '*') == '.');
+        assert(f.narrow(L'a', '*') == 'a');
+        assert(f.narrow(L'1', '*') == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/narrow_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/narrow_many.pass.cpp
new file mode 100644
index 0000000..ab26e77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/narrow_many.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const charT* narrow(const charT* low, const charT*, char dfault, char* to) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        std::wstring in(L" A\x07.a1");
+        std::vector<char> v(in.size());
+
+        assert(f.narrow(&in[0], in.data() + in.size(), '*', v.data()) == in.data() + in.size());
+        assert(v[0] == ' ');
+        assert(v[1] == 'A');
+        assert(v[2] == '\x07');
+        assert(v[3] == '.');
+        assert(v[4] == 'a');
+        assert(v[5] == '1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/scan_is.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/scan_is.pass.cpp
new file mode 100644
index 0000000..2078af7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/scan_is.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const charT* scan_is(mask m, const charT* low, const charT* high) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        const std::wstring in(L" A\x07.a1");
+        std::vector<F::mask> m(in.size());
+        assert(f.scan_is(F::space, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_is(F::print, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_is(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 2);
+        assert(f.scan_is(F::upper, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::lower, in.data(), in.data() + in.size()) - in.data() == 4);
+        assert(f.scan_is(F::alpha, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::digit, in.data(), in.data() + in.size()) - in.data() == 5);
+        assert(f.scan_is(F::punct, in.data(), in.data() + in.size()) - in.data() == 3);
+        assert(f.scan_is(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::blank, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_is(F::alnum, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_is(F::graph, in.data(), in.data() + in.size()) - in.data() == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/scan_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/scan_not.pass.cpp
new file mode 100644
index 0000000..77f8c9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/scan_not.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const charT* scan_not(mask m, const charT* low, const charT* high) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include <stdio.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        const std::wstring in(L" A\x07.a1");
+        std::vector<F::mask> m(in.size());
+        assert(f.scan_not(F::space, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_not(F::print, in.data(), in.data() + in.size()) - in.data() == 2);
+        assert(f.scan_not(F::cntrl, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::upper, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::lower, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::alpha, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::digit, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::punct, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::xdigit, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::blank, in.data(), in.data() + in.size()) - in.data() == 1);
+        assert(f.scan_not(F::alnum, in.data(), in.data() + in.size()) - in.data() == 0);
+        assert(f.scan_not(F::graph, in.data(), in.data() + in.size()) - in.data() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/tolower_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/tolower_1.pass.cpp
new file mode 100644
index 0000000..53228f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/tolower_1.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// charT tolower(charT) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.tolower(L' ') == L' ');
+        assert(f.tolower(L'A') == L'a');
+        assert(f.tolower(L'\x07') == L'\x07');
+        assert(f.tolower(L'.') == L'.');
+        assert(f.tolower(L'a') == L'a');
+        assert(f.tolower(L'1') == L'1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/tolower_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/tolower_many.pass.cpp
new file mode 100644
index 0000000..04a663b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/tolower_many.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const charT* tolower(charT* low, const charT* high) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        std::wstring in(L" A\x07.a1");
+
+        assert(f.tolower(&in[0], in.data() + in.size()) == in.data() + in.size());
+        assert(in[0] == L' ');
+        assert(in[1] == L'a');
+        assert(in[2] == L'\x07');
+        assert(in[3] == L'.');
+        assert(in[4] == L'a');
+        assert(in[5] == L'1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/toupper_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/toupper_1.pass.cpp
new file mode 100644
index 0000000..a9275dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/toupper_1.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// charT toupper(charT) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.toupper(L' ') == L' ');
+        assert(f.toupper(L'A') == L'A');
+        assert(f.toupper(L'\x07') == L'\x07');
+        assert(f.toupper(L'.') == L'.');
+        assert(f.toupper(L'a') == L'A');
+        assert(f.toupper(L'1') == L'1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/toupper_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/toupper_many.pass.cpp
new file mode 100644
index 0000000..976d2a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/toupper_many.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const charT* toupper(charT* low, const charT* high) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        std::wstring in(L" A\x07.a1");
+
+        assert(f.toupper(&in[0], in.data() + in.size()) == in.data() + in.size());
+        assert(in[0] == L' ');
+        assert(in[1] == L'A');
+        assert(in[2] == L'\x07');
+        assert(in[3] == L'.');
+        assert(in[4] == L'A');
+        assert(in[5] == L'1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/widen_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/widen_1.pass.cpp
new file mode 100644
index 0000000..ab927ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/widen_1.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// charT widen(char c) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+
+        assert(f.widen(' ') == L' ');
+        assert(f.widen('A') == L'A');
+        assert(f.widen('\x07') == L'\x07');
+        assert(f.widen('.') == L'.');
+        assert(f.widen('a') == L'a');
+        assert(f.widen('1') == L'1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/widen_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/widen_many.pass.cpp
new file mode 100644
index 0000000..55f6610
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.members/widen_many.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class ctype;
+
+// const char* widen(const char* low, const char* high, charT* to) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <string>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef std::ctype<wchar_t> F;
+        const F& f = std::use_facet<F>(l);
+        std::string in(" A\x07.a1");
+        std::vector<wchar_t> v(in.size());
+
+        assert(f.widen(&in[0], in.data() + in.size(), v.data()) == in.data() + in.size());
+        assert(v[0] == L' ');
+        assert(v[1] == L'A');
+        assert(v[2] == L'\x07');
+        assert(v[3] == L'.');
+        assert(v[4] == L'a');
+        assert(v[5] == L'1');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/locale.ctype.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/types.pass.cpp
new file mode 100644
index 0000000..cf70539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/locale.ctype/types.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class CharT>
+// class ctype
+//     : public locale::facet,
+//       public ctype_base
+// {
+// public:
+//     typedef CharT char_type;
+// };
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        assert(std::has_facet<std::ctype<wchar_t> >(l));
+        const std::ctype<wchar_t>& f = std::use_facet<std::ctype<wchar_t> >(l);
+        ((void)f); // Prevent unused warning
+        {
+            (void)std::ctype<wchar_t>::id;
+        }
+        static_assert((std::is_same<std::ctype<wchar_t>::char_type, wchar_t>::value), "");
+        static_assert((std::is_base_of<std::ctype_base, std::ctype<wchar_t> >::value), "");
+        static_assert((std::is_base_of<std::locale::facet, std::ctype<wchar_t> >::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/with_public_dtor.hpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/with_public_dtor.hpp
new file mode 100644
index 0000000..062c927
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.ctype/with_public_dtor.hpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <utility>
+
+template <typename T>
+struct with_public_dtor : T
+{
+    template <typename... Args>
+    explicit with_public_dtor(Args &&... args)
+        : T(std::forward<Args>(args)...)
+    {
+    }
+};
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages.byname/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages.byname/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages.byname/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/ctor.pass.cpp
new file mode 100644
index 0000000..db8cbd0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class messages<charT>
+
+// explicit messages(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::messages<char> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/locale.messages.members/not_testable.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/locale.messages.members/not_testable.pass.cpp
new file mode 100644
index 0000000..41fb3d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/locale.messages.members/not_testable.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class messages<charT>
+
+// catalog open(const basic_string<char>& name, const locale&) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+// As far as I can tell, the messages facet is untestable.  I have a best
+// effort implementation in the hopes that in the future I will learn how
+// to test it.
+
+template <class CharT>
+class F
+    : public std::messages<CharT>
+{
+public:
+    explicit F(std::size_t refs = 0)
+        : std::messages<CharT>(refs) {}
+};
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/locale.messages.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/locale.messages.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/locale.messages.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/messages_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/messages_base.pass.cpp
new file mode 100644
index 0000000..9fd30c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/messages_base.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class messages_base
+// {
+// public:
+//     typedef unspecified catalog;
+// };
+
+#include <locale>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::messages_base mb;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/types.pass.cpp
new file mode 100644
index 0000000..58348de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.messages/locale.messages/types.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class _CharT>
+// class messages
+//     : public locale::facet,
+//       public messages_base
+// {
+// public:
+//     typedef _CharT               char_type;
+//     typedef basic_string<_CharT> string_type;
+
+#include <locale>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::messages<char> >::value), "");
+    static_assert((std::is_base_of<std::messages_base, std::messages<char> >::value), "");
+    static_assert((std::is_same<std::messages<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::messages<char>::string_type, std::string>::value), "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_base_of<std::locale::facet, std::messages<wchar_t> >::value), "");
+    static_assert((std::is_base_of<std::messages_base, std::messages<wchar_t> >::value), "");
+    static_assert((std::is_same<std::messages<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::messages<wchar_t>::string_type, std::wstring>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/ctor.pass.cpp
new file mode 100644
index 0000000..9b7f602
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_get<charT, InputIterator>
+
+// explicit money_get(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::money_get<char, const char*> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_en_US.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_en_US.pass.cpp
new file mode 100644
index 0000000..21117da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_en_US.pass.cpp
@@ -0,0 +1,743 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_get<charT, InputIterator>
+
+// iter_type get(iter_type b, iter_type e, bool intl, ios_base& iob,
+//               ios_base::iostate& err, long double& v) const;
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::money_get<char, cpp17_input_iterator<const char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_get<wchar_t, cpp17_input_iterator<const wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+#endif
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_en_US_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+    {
+        const my_facet f(1);
+        // char, national
+        {   // zero
+            std::string v = "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = LocaleHelpers::negate_en_US("0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1234567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "$0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = "$0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("$0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("$0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = "$1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = "$1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+    {
+        const my_facet f(1);
+        // char, international
+        {   // zero
+            std::string v = "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = LocaleHelpers::negate_en_US("0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1234567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "USD 0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = "USD 0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = "USD 1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = "USD 1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("$1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        const my_facetw f(1);
+        // wchar_t, national
+        {   // zero
+            std::wstring v = L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = LocaleHelpers::negate_en_US(L"0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1234567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"$0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = L"$0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = L"$1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = L"$1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+    {
+        const my_facetw f(1);
+        // wchar_t, international
+        {   // zero
+            std::wstring v = L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = LocaleHelpers::negate_en_US(L"0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1234567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"USD 0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = L"USD 0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = L"USD 1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = L"USD 1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    {
+      // test for err
+      const my_facet f(1);
+      std::string v = "1.23";
+      typedef cpp17_input_iterator<const char*> I;
+      long double ex = -1L;
+      std::ios_base::iostate err = std::ios_base::goodbit;
+      f.get(I(v.data()), I(v.data()), false, ios, err, ex);
+      assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+      assert(ex == -1L);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_fr_FR.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_fr_FR.pass.cpp
new file mode 100644
index 0000000..3effa80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_fr_FR.pass.cpp
@@ -0,0 +1,744 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: darwin
+
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <locale>
+
+// class money_get<charT, InputIterator>
+
+// iter_type get(iter_type b, iter_type e, bool intl, ios_base& iob,
+//               ios_base::iostate& err, long double& v) const;
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+typedef std::money_get<char, cpp17_input_iterator<const char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_get<wchar_t, cpp17_input_iterator<const wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+
+static std::wstring convert_thousands_sep(std::wstring const& in) {
+  return LocaleHelpers::convert_thousands_sep_fr_FR(in);
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_fr_FR_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+    {
+        const my_facet f(1);
+        // char, national
+        {   // zero
+            std::string v = "0,00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = "-0,01";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1 234 567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = "-1 234 567,89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = "-1234567,89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 \u20ac";  // EURO SIGN
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 \u20ac";  // EURO SIGN
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "1 234 567,89 EUR -";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "1 234 567,89 EUR -";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+        std::noshowbase(ios);
+    }
+    {
+        const my_facet f(1);
+        // char, international
+        {   // zero
+            std::string v = "0,00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = "-0,01";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1 234 567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = "-1 234 567,89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = "-1234567,89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 EUR";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 EUR";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "1 234 567,89 Eu-";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "1 234 567,89 Eu-";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        const my_facetw f(1);
+        // wchar_t, national
+        {   // zero
+            std::wstring v = L"0,00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = L"-0,01";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 ");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1234567,89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 \u20ac";  // EURO SIGN
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 \u20ac";  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 \u20ac");  // EURO SIGN
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 \u20ac");  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 \u20ac");  // EURO SIGN
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 EUR -");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 EUR -");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+    }
+    {
+        const my_facetw f(1);
+        // wchar_t, international
+        {   // zero
+            std::wstring v = L"0,00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = L"-0,01";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 ");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1234567,89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 EUR";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 EUR";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 EUR");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 EUR");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 EUR");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 Eu-");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 Eu-");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp
new file mode 100644
index 0000000..e680f2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp
@@ -0,0 +1,747 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// REQUIRES: locale.ru_RU.UTF-8
+
+// XFAIL: glibc-old-ru_RU-decimal-point
+
+// <locale>
+
+// class money_get<charT, InputIterator>
+
+// iter_type get(iter_type b, iter_type e, bool intl, ios_base& iob,
+//               ios_base::iostate& err, long double& v) const;
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::money_get<char, cpp17_input_iterator<const char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_get<wchar_t, cpp17_input_iterator<const wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+
+static std::wstring convert_thousands_sep(std::wstring const& in) {
+  return LocaleHelpers::convert_thousands_sep_ru_RU(in);
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_ru_RU_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+    std::string symbol(LocaleHelpers::currency_symbol_ru_RU());
+    {
+        const my_facet f(1);
+        // char, national
+        {   // zero
+            std::string v = "0,00 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = "-0,01 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1 234 567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = "-1 234 567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = "-1234567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 " + symbol;
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 5);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 " + symbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 " + symbol;
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 6);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 " + symbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 " + symbol;
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 " + symbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 " + symbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 RUB";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -123456789);
+        }
+    }
+    {
+        const my_facet f(1);
+        // char, international
+        {   // zero
+            std::string v = "0,00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = "-0,01 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1 234 567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = "-1 234 567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = "-1234567,89 ";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 RUB";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 5);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = "0,00 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 RUB";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 6);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = "-0,01 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 RUB";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = "1 234 567,89 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 " + symbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "-1 234 567,89 " + symbol;
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -123456789);
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::wstring wsymbol(LocaleHelpers::currency_symbol_ru_RU());
+    {
+        const my_facetw f(1);
+        // wchar_t, national
+        {   // zero
+            std::wstring v = L"0,00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = L"-0,01 ";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 ");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 ");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1234567,89 ";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 " + wsymbol;
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 5);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 " + wsymbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 " + wsymbol;
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 6);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 " + wsymbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 ") + wsymbol;
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 ") + wsymbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 ") + wsymbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 RUB");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 RUB");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -123456789);
+        }
+    }
+    {
+        const my_facetw f(1);
+        // wchar_t, international
+        {   // zero
+            std::wstring v = L"0,00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = L"-0,01 ";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 ");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 ");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1234567,89 ";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 RUB";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 5);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = L"0,00 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 RUB";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 6);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = L"-0,01 RUB";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 RUB");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 13);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = convert_thousands_sep(L"1 234 567,89 RUB");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 RUB");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 ") + wsymbol;
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = convert_thousands_sep(L"-1 234 567,89 ") + wsymbol;
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 14);
+            assert(err == std::ios_base::goodbit);
+            assert(ex == -123456789);
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_zh_CN.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_zh_CN.pass.cpp
new file mode 100644
index 0000000..4cdb257
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_zh_CN.pass.cpp
@@ -0,0 +1,774 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class money_get<charT, InputIterator>
+
+// iter_type get(iter_type b, iter_type e, bool intl, ios_base& iob,
+//               ios_base::iostate& err, long double& v) const;
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::money_get<char, cpp17_input_iterator<const char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_get<wchar_t, cpp17_input_iterator<const wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+#endif
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_zh_CN_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+#ifdef _WIN32
+    std::string currency_name = "CNY";
+#else
+    std::string currency_name = "CNY ";
+#endif
+    std::string currency_symbol(LocaleHelpers::currency_symbol_zh_CN());
+    {
+        const my_facet f(1);
+        // char, national
+        {   // zero
+            std::string v = "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = "-0.01";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = "-1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = "-1234567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = currency_symbol + "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = currency_symbol + "0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = currency_symbol + "-0.01";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::string v = currency_symbol + "-0.01";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = currency_symbol + "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = currency_symbol + "1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = currency_symbol + "-1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "CNY -1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = "CNY -1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+    {
+        const my_facet f(1);
+        // char, international
+        {   // zero
+            std::string v = "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::string v = "-0.01";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::string v = "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::string v = "-1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::string v = "-1234567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::string v = "CNY 0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::string v = currency_name + "0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+#ifdef TEST_HAS_GLIBC
+            std::string v = "-" + currency_name + "0.01";
+#else
+            std::string v = currency_name + "-0.01";
+#endif
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+#ifdef TEST_HAS_GLIBC
+            std::string v = "-" + currency_name + "0.01";
+#else
+            std::string v = currency_name + "-0.01";
+#endif
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = currency_name + "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::string v = currency_name + "1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+#ifdef TEST_HAS_GLIBC
+            std::string v = "-" + currency_name + "1,234,567.89";
+#else
+            std::string v = currency_name + "-1,234,567.89";
+#endif
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = currency_symbol + "-1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = currency_symbol + "-1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#ifdef _WIN32
+    std::wstring w_currency_name = L"CNY";
+#else
+    std::wstring w_currency_name = L"CNY ";
+#endif
+    std::wstring w_currency_symbol(LocaleHelpers::currency_symbol_zh_CN());
+    {
+        const my_facetw f(1);
+        // wchar_t, national
+        {   // zero
+            std::wstring v = L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = L"-0.01";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1234567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = w_currency_symbol + L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = w_currency_symbol + L"0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = w_currency_symbol + L"-0.01";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+            std::wstring v = w_currency_symbol + L"-0.01";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = w_currency_symbol + L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = w_currency_symbol + L"1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = w_currency_symbol + L"-1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = L"CNY -1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = L"CNY -1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+    {
+        const my_facetw f(1);
+        // wchar_t, international
+        {   // zero
+            std::wstring v = L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // negative one
+            std::wstring v = L"-0.01";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // positive
+            std::wstring v = L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // negative
+            std::wstring v = L"-1234567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+        }
+        {   // zero, showbase
+            std::wstring v = L"CNY 0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+        }
+        {   // zero, showbase
+            std::wstring v = w_currency_name + L"0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 0);
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+#ifdef TEST_HAS_GLIBC
+            std::wstring v = L"-" + w_currency_name + L"0.01";
+#else
+            std::wstring v = w_currency_name + L"-0.01";
+#endif
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+        }
+        {   // negative one, showbase
+#ifdef TEST_HAS_GLIBC
+            std::wstring v = L"-" + w_currency_name + L"0.01";
+#else
+            std::wstring v = w_currency_name + L"-0.01";
+#endif
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -1);
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = w_currency_name + L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+        }
+        {   // positive, showbase
+            std::wstring v = w_currency_name + L"1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == 123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+#ifdef TEST_HAS_GLIBC
+            std::wstring v = L"-" + w_currency_name + L"1,234,567.89";
+#else
+            std::wstring v = w_currency_name + L"-1,234,567.89";
+#endif
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == -123456789);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = w_currency_symbol + L"-1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = w_currency_symbol + L"-1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            long double ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 0);
+            assert(err == std::ios_base::failbit);
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_string_en_US.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_string_en_US.pass.cpp
new file mode 100644
index 0000000..80e84a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_string_en_US.pass.cpp
@@ -0,0 +1,751 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_get<charT, InputIterator>
+
+// iter_type get(iter_type b, iter_type e, bool intl, ios_base& iob,
+//               ios_base::iostate& err, string_type& v) const;
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::money_get<char, cpp17_input_iterator<const char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_get<wchar_t, cpp17_input_iterator<const wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+#endif
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_en_US_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+    {
+        const my_facet f(1);
+        // char, national
+        {   // zero
+            std::string v = "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "0");
+        }
+        {   // negative one
+            std::string v = LocaleHelpers::negate_en_US("0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-1");
+        }
+        {   // positive
+            std::string v = "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "123456789");
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-123456789");
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1234567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-123456789");
+        }
+        {   // zero, showbase
+            std::string v = "$0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "0");
+        }
+        {   // zero, showbase
+            std::string v = "$0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "0");
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("$0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-1");
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("$0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-1");
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = "$1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "123456789");
+        }
+        {   // positive, showbase
+            std::string v = "$1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == "");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == "");
+        }
+    }
+    {
+        const my_facet f(1);
+        // char, international
+        {   // zero
+            std::string v = "0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "0");
+        }
+        {   // negative one
+            std::string v = LocaleHelpers::negate_en_US("0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-1");
+        }
+        {   // positive
+            std::string v = "1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "123456789");
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-123456789");
+        }
+        {   // negative
+            std::string v = LocaleHelpers::negate_en_US("1234567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-123456789");
+        }
+        {   // zero, showbase
+            std::string v = "USD 0.00";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "0");
+        }
+        {   // zero, showbase
+            std::string v = "USD 0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "0");
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 0.01");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-1");
+        }
+        {   // negative one, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-1");
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::string v = "USD 1,234,567.89";
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "123456789");
+        }
+        {   // positive, showbase
+            std::string v = "USD 1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == "-123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == "");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::string v = LocaleHelpers::negate_en_US("$1,234,567.89");
+            typedef cpp17_input_iterator<const char*> I;
+            std::string ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == "");
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        const my_facetw f(1);
+        // wchar_t, national
+        {   // zero
+            std::wstring v = L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"0");
+        }
+        {   // negative one
+            std::wstring v = LocaleHelpers::negate_en_US(L"0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-1");
+        }
+        {   // positive
+            std::wstring v = L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"123456789");
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-123456789");
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1234567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-123456789");
+        }
+        {   // zero, showbase
+            std::wstring v = L"$0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"0");
+        }
+        {   // zero, showbase
+            std::wstring v = L"$0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"0");
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-1");
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-1");
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = L"$1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"123456789");
+        }
+        {   // positive, showbase
+            std::wstring v = L"$1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == L"");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                false, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == L"");
+        }
+    }
+    {
+        const my_facetw f(1);
+        // wchar_t, international
+        {   // zero
+            std::wstring v = L"0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"0");
+        }
+        {   // negative one
+            std::wstring v = LocaleHelpers::negate_en_US(L"0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-1");
+        }
+        {   // positive
+            std::wstring v = L"1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"123456789");
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-123456789");
+        }
+        {   // negative
+            std::wstring v = LocaleHelpers::negate_en_US(L"1234567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-123456789");
+        }
+        {   // zero, showbase
+            std::wstring v = L"USD 0.00";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"0");
+        }
+        {   // zero, showbase
+            std::wstring v = L"USD 0.00";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"0");
+            std::noshowbase(ios);
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 0.01");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-1");
+        }
+        {   // negative one, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 0.01");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-1");
+            std::noshowbase(ios);
+        }
+        {   // positive, showbase
+            std::wstring v = L"USD 1,234,567.89";
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"123456789");
+        }
+        {   // positive, showbase
+            std::wstring v = L"USD 1,234,567.89";
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"USD 1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + v.size());
+            assert(err == std::ios_base::eofbit);
+            assert(ex == L"-123456789");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$1,234,567.89");
+            std::showbase(ios);
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == L"");
+            std::noshowbase(ios);
+        }
+        {   // negative, showbase
+            std::wstring v = LocaleHelpers::negate_en_US(L"$1,234,567.89");
+            typedef cpp17_input_iterator<const wchar_t*> I;
+            std::wstring ex;
+            std::ios_base::iostate err = std::ios_base::goodbit;
+            I iter = f.get(I(v.data()), I(v.data() + v.size()),
+                                                true, ios, err, ex);
+            assert(base(iter) == v.data() + 1);
+            assert(err == std::ios_base::failbit);
+            assert(ex == L"");
+        }
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    {
+      // test for err
+      const my_facet f(1);
+      std::string v = "1.23";
+      typedef cpp17_input_iterator<const char*> I;
+      std::string ex = "NULL";
+      std::ios_base::iostate err = std::ios_base::goodbit;
+      f.get(I(v.data()), I(v.data()), false, ios, err, ex);
+      assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+      assert(ex == "NULL");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/types.pass.cpp
new file mode 100644
index 0000000..5459f9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/types.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class CharT, class InputIterator = istreambuf_iterator<CharT> >
+// class money_get
+//     : public locale::facet
+// {
+// public:
+//     typedef CharT                   char_type;
+//     typedef InputIterator           iter_type;
+//     typedef basic_string<char_type> string_type;
+
+#include <locale>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::money_get<char> >::value), "");
+    static_assert((std::is_same<std::money_get<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::money_get<char>::iter_type, std::istreambuf_iterator<char> >::value), "");
+    static_assert((std::is_same<std::money_get<char>::string_type, std::string>::value), "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_base_of<std::locale::facet, std::money_get<wchar_t> >::value), "");
+    static_assert((std::is_same<std::money_get<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::money_get<wchar_t>::iter_type, std::istreambuf_iterator<wchar_t> >::value), "");
+    static_assert((std::is_same<std::money_get<wchar_t>::string_type, std::wstring>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/ctor.pass.cpp
new file mode 100644
index 0000000..b3f358d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_put<charT, OutputIterator>
+
+// explicit money_put(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::money_put<char, char*> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_en_US.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_en_US.pass.cpp
new file mode 100644
index 0000000..7092c23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_en_US.pass.cpp
@@ -0,0 +1,585 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, bool intl, ios_base& f, char_type fill,
+//               long double units) const;
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef std::money_put<char, cpp17_output_iterator<char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_put<wchar_t, cpp17_output_iterator<wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+#endif
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_en_US_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+{
+    const my_facet f(1);
+    // char, national
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(0.01)");
+#else
+        assert(ex == "-0.01");
+#endif
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(1,234,567.89)");
+#else
+        assert(ex == "-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "$0.00");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "($0.01)");
+#else
+        assert(ex == "-$0.01");
+#endif
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "$1,234,567.89");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "($1,234,567.89)");
+#else
+        assert(ex == "-$1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "($1,234,567.89)     ");
+#else
+        assert(ex == "-$1,234,567.89      ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "($     1,234,567.89)");
+#else
+        assert(ex == "-$      1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "     ($1,234,567.89)");
+#else
+        assert(ex == "      -$1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+
+    // char, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(0.01)");
+#else
+        assert(ex == "-0.01");
+#endif
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(1,234,567.89)");
+#else
+        assert(ex == "-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "USD0.00");
+#else
+        assert(ex == "USD 0.00");
+#endif
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(USD0.01)");
+#else
+        assert(ex == "-USD 0.01");
+#endif
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "USD1,234,567.89");
+#else
+        assert(ex == "USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(USD1,234,567.89)");
+#else
+        assert(ex == "-USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(USD1,234,567.89)   ");
+#else
+        assert(ex == "-USD 1,234,567.89   ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "(USD   1,234,567.89)");
+#else
+        assert(ex == "-USD    1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == "   (USD1,234,567.89)");
+#else
+        assert(ex == "   -USD 1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+{
+    const my_facetw f(1);
+    // wchar_t, national
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(0.01)");
+#else
+        assert(ex == L"-0.01");
+#endif
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(1,234,567.89)");
+#else
+        assert(ex == L"-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"$0.00");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"($0.01)");
+#else
+        assert(ex == L"-$0.01");
+#endif
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"$1,234,567.89");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"($1,234,567.89)");
+#else
+        assert(ex == L"-$1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"($1,234,567.89)     ");
+#else
+        assert(ex == L"-$1,234,567.89      ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"($     1,234,567.89)");
+#else
+        assert(ex == L"-$      1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"     ($1,234,567.89)");
+#else
+        assert(ex == L"      -$1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+
+    // wchar_t, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(0.01)");
+#else
+        assert(ex == L"-0.01");
+#endif
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(1,234,567.89)");
+#else
+        assert(ex == L"-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"USD0.00");
+#else
+        assert(ex == L"USD 0.00");
+#endif
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(USD0.01)");
+#else
+        assert(ex == L"-USD 0.01");
+#endif
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"USD1,234,567.89");
+#else
+        assert(ex == L"USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(USD1,234,567.89)");
+#else
+        assert(ex == L"-USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(USD1,234,567.89)   ");
+#else
+        assert(ex == L"-USD 1,234,567.89   ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"(USD   1,234,567.89)");
+#else
+        assert(ex == L"-USD    1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#if defined(_WIN32)
+        assert(ex == L"   (USD1,234,567.89)");
+#else
+        assert(ex == L"   -USD 1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_fr_FR.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_fr_FR.pass.cpp
new file mode 100644
index 0000000..05b4ee4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_fr_FR.pass.cpp
@@ -0,0 +1,469 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: darwin
+
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <locale>
+
+// class money_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, bool intl, ios_base& f, char_type fill,
+//               long double units) const;
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+typedef std::money_put<char, cpp17_output_iterator<char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_put<wchar_t, cpp17_output_iterator<wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+
+static std::wstring convert_thousands_sep(std::wstring const& in) {
+  return LocaleHelpers::convert_thousands_sep_fr_FR(in);
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_fr_FR_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+{
+    const my_facet f(1);
+    // char, national
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00 \u20ac");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01 \u20ac");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89 \u20ac");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 \u20ac");
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 \u20ac   ");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89    \u20ac");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "   -1 234 567,89 \u20ac");
+        assert(ios.width() == 0);
+    }
+
+    // char, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00 EUR");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01 EUR");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89 EUR");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 EUR");
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 EUR   ");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89    EUR");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "   -1 234 567,89 EUR");
+        assert(ios.width() == 0);
+    }
+}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+{
+    const my_facetw f(1);
+    // wchar_t, national
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89"));
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89"));
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00 \u20ac");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01 \u20ac");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89 \u20ac"));
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 \u20ac"));
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 \u20ac     "));
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89      \u20ac"));
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"     -1 234 567,89 \u20ac"));
+        assert(ios.width() == 0);
+    }
+
+    // wchar_t, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89"));
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89"));
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00 EUR");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01 EUR");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89 EUR"));
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 EUR"));
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 EUR   "));
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89    EUR"));
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"   -1 234 567,89 EUR"));
+        assert(ios.width() == 0);
+    }
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp
new file mode 100644
index 0000000..4aea101
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp
@@ -0,0 +1,469 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// REQUIRES: locale.ru_RU.UTF-8
+
+// XFAIL: glibc-old-ru_RU-decimal-point
+
+// <locale>
+
+// class money_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, bool intl, ios_base& f, char_type fill,
+//               long double units) const;
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::money_put<char, cpp17_output_iterator<char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_put<wchar_t, cpp17_output_iterator<wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+
+static std::wstring convert_thousands_sep(std::wstring const& in) {
+  return LocaleHelpers::convert_thousands_sep_ru_RU(in);
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_ru_RU_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+{
+    std::string symbol(LocaleHelpers::currency_symbol_ru_RU());
+    const my_facet f(1);
+    // char, national
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00 " + symbol);
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01 " + symbol);
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89 " + symbol);
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 " + symbol);
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(15);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 " + symbol);
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(15);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 " + symbol);
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(15);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 " + symbol);
+        assert(ios.width() == 0);
+    }
+
+    // char, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0,00 RUB");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0,01 RUB");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1 234 567,89 RUB");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 RUB");
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89 RUB   ");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1 234 567,89    RUB");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == "   -1 234 567,89 RUB");
+        assert(ios.width() == 0);
+    }
+}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+{
+    std::wstring symbol(LocaleHelpers::currency_symbol_ru_RU());
+    const my_facetw f(1);
+    // wchar_t, national
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89"));
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89"));
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00 " + symbol);
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01 " + symbol);
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89 ") + symbol);
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 ") + symbol);
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(15);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 ") + symbol);
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(15);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 ") + symbol);
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(15);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 ") + symbol);
+        assert(ios.width() == 0);
+    }
+
+    // wchar_t, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01");
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89"));
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89"));
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0,00 RUB");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0,01 RUB");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"1 234 567,89 RUB"));
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 RUB"));
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89 RUB   "));
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"-1 234 567,89    RUB"));
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == convert_thousands_sep(L"   -1 234 567,89 RUB"));
+        assert(ios.width() == 0);
+    }
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_zh_CN.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_zh_CN.pass.cpp
new file mode 100644
index 0000000..1aba059
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_zh_CN.pass.cpp
@@ -0,0 +1,519 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class money_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, bool intl, ios_base& f, char_type fill,
+//               long double units) const;
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+typedef std::money_put<char, cpp17_output_iterator<char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_put<wchar_t, cpp17_output_iterator<wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+#endif
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_zh_CN_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+{
+    const my_facet f(1);
+#ifdef _WIN32
+    std::string currency_name = "CNY";
+#else
+    std::string currency_name = "CNY ";
+#endif
+    std::string currency_name_padding(7 - currency_name.size(), ' ');
+    std::string currency_symbol(LocaleHelpers::currency_symbol_zh_CN());
+    std::string currency_symbol_padding(7 - currency_symbol.size(), ' ');
+    // char, national
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0.01");
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1,234,567.89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol + "0.00");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol + "-0.01");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol + "1,234,567.89");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol + "-1,234,567.89");
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol + "-1,234,567.89" + currency_symbol_padding);
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol + "-" + currency_symbol_padding + "1,234,567.89");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_symbol_padding + currency_symbol + "-1,234,567.89");
+        assert(ios.width() == 0);
+    }
+
+    // char, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-0.01");
+    }
+    {   // positive
+        long double v = 123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1,234,567.89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_name + "0.00");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == "-" + currency_name + "0.01");
+#else
+        assert(ex == currency_name + "-0.01");
+#endif
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == currency_name + "1,234,567.89");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == "-" + currency_name + "1,234,567.89");
+#else
+        assert(ex == currency_name + "-1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == "-" + currency_name + "1,234,567.89" + currency_name_padding);
+#else
+        assert(ex == currency_name + "-1,234,567.89" + currency_name_padding);
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == "-" + currency_name + currency_name_padding + "1,234,567.89");
+#else
+        assert(ex == currency_name + "-" + currency_name_padding + "1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == currency_name_padding + "-" + currency_name + "1,234,567.89");
+#else
+        assert(ex == currency_name_padding + currency_name + "-1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+{
+#ifdef _WIN32
+    std::wstring currency_name = L"CNY";
+#else
+    std::wstring currency_name = L"CNY ";
+#endif
+    std::wstring currency_name_padding(7 - currency_name.size(), ' ');
+    std::wstring currency_symbol(LocaleHelpers::currency_symbol_zh_CN());
+    const my_facetw f(1);
+    // wchar_t, national
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0.01");
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-1,234,567.89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_symbol + L"0.00");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_symbol + L"-0.01");
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_symbol + L"1,234,567.89");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_symbol + L"-1,234,567.89");
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_symbol + L"-1,234,567.89      ");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_symbol + L"-      1,234,567.89");
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"      " + currency_symbol + L"-1,234,567.89");
+        assert(ios.width() == 0);
+    }
+
+    // wchar_t, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        long double v = 0;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0.00");
+    }
+    {   // negative one
+        long double v = -1;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-0.01");
+    }
+    {   // positive
+        long double v = 123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"1,234,567.89");
+    }
+    {   // negative
+        long double v = -123456789;
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"-1,234,567.89");
+    }
+    {   // zero, showbase
+        long double v = 0;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_name + L"0.00");
+    }
+    {   // negative one, showbase
+        long double v = -1;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == L"-" + currency_name + L"0.01");
+#else
+        assert(ex == currency_name + L"-0.01");
+#endif
+    }
+    {   // positive, showbase
+        long double v = 123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == currency_name + L"1,234,567.89");
+    }
+    {   // negative, showbase
+        long double v = -123456789;
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == L"-" + currency_name + L"1,234,567.89");
+#else
+        assert(ex == currency_name + L"-1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == L"-" + currency_name + L"1,234,567.89" + currency_name_padding);
+#else
+        assert(ex == currency_name + L"-1,234,567.89" + currency_name_padding);
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == L"-" + currency_name + currency_name_padding + L"1,234,567.89");
+#else
+        assert(ex == currency_name + L"-" + currency_name_padding + L"1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        long double v = -123456789;
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef TEST_HAS_GLIBC
+        assert(ex == currency_name_padding + L"-" + currency_name + L"1,234,567.89");
+#else
+        assert(ex == currency_name_padding + currency_name + L"-1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_string_en_US.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_string_en_US.pass.cpp
new file mode 100644
index 0000000..bb7047a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_string_en_US.pass.cpp
@@ -0,0 +1,585 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, bool intl, ios_base& f, char_type fill,
+//               const string_type& units) const;
+
+// REQUIRES: locale.en_US.UTF-8
+
+#include <locale>
+#include <ios>
+#include <streambuf>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef std::money_put<char, cpp17_output_iterator<char*> > Fn;
+
+class my_facet
+    : public Fn
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : Fn(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::money_put<wchar_t, cpp17_output_iterator<wchar_t*> > Fw;
+
+class my_facetw
+    : public Fw
+{
+public:
+    explicit my_facetw(std::size_t refs = 0)
+        : Fw(refs) {}
+};
+#endif
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::string loc_name(LOCALE_en_US_UTF_8);
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<char, true>(loc_name)));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, false>(loc_name)));
+    ios.imbue(std::locale(ios.getloc(),
+                          new std::moneypunct_byname<wchar_t, true>(loc_name)));
+#endif
+{
+    const my_facet f(1);
+    // char, national
+    {   // zero
+        std::string v = "0";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0.00");
+    }
+    {   // negative one
+        std::string v = "-1";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(0.01)");
+#else
+        assert(ex == "-0.01");
+#endif
+    }
+    {   // positive
+        std::string v = "123456789";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1,234,567.89");
+    }
+    {   // negative
+        std::string v = "-123456789";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(1,234,567.89)");
+#else
+        assert(ex == "-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        std::string v = "0";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "$0.00");
+    }
+    {   // negative one, showbase
+        std::string v = "-1";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "($0.01)");
+#else
+        assert(ex == "-$0.01");
+#endif
+    }
+    {   // positive, showbase
+        std::string v = "123456789";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "$1,234,567.89");
+    }
+    {   // negative, showbase
+        std::string v = "-123456789";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "($1,234,567.89)");
+#else
+        assert(ex == "-$1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        std::string v = "-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "($1,234,567.89)     ");
+#else
+        assert(ex == "-$1,234,567.89      ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        std::string v = "-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "($     1,234,567.89)");
+#else
+        assert(ex == "-$      1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        std::string v = "-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), false, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "     ($1,234,567.89)");
+#else
+        assert(ex == "      -$1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+
+    // char, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        std::string v = "0";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0.00");
+    }
+    {   // negative one
+        std::string v = "-1";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(0.01)");
+#else
+        assert(ex == "-0.01");
+#endif
+    }
+    {   // positive
+        std::string v = "123456789";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1,234,567.89");
+    }
+    {   // negative
+        std::string v = "-123456789";
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(1,234,567.89)");
+#else
+        assert(ex == "-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        std::string v = "0";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "USD0.00");
+#else
+        assert(ex == "USD 0.00");
+#endif
+    }
+    {   // negative one, showbase
+        std::string v = "-1";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(USD0.01)");
+#else
+        assert(ex == "-USD 0.01");
+#endif
+    }
+    {   // positive, showbase
+        std::string v = "123456789";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "USD1,234,567.89");
+#else
+        assert(ex == "USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase
+        std::string v = "-123456789";
+        std::showbase(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, '*', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(USD1,234,567.89)");
+#else
+        assert(ex == "-USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        std::string v = "-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(USD1,234,567.89)   ");
+#else
+        assert(ex == "-USD 1,234,567.89   ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        std::string v = "-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "(USD   1,234,567.89)");
+#else
+        assert(ex == "-USD    1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        std::string v = "-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        char str[100];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), true, ios, ' ', v);
+        std::string ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == "   (USD1,234,567.89)");
+#else
+        assert(ex == "   -USD 1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+{
+    const my_facetw f(1);
+    // wchar_t, national
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        std::wstring v = L"0";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0.00");
+    }
+    {   // negative one
+        std::wstring v = L"-1";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(0.01)");
+#else
+        assert(ex == L"-0.01");
+#endif
+    }
+    {   // positive
+        std::wstring v = L"123456789";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"1,234,567.89");
+    }
+    {   // negative
+        std::wstring v = L"-123456789";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(1,234,567.89)");
+#else
+        assert(ex == L"-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        std::wstring v = L"0";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"$0.00");
+    }
+    {   // negative one, showbase
+        std::wstring v = L"-1";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"($0.01)");
+#else
+        assert(ex == L"-$0.01");
+#endif
+    }
+    {   // positive, showbase
+        std::wstring v = L"123456789";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"$1,234,567.89");
+    }
+    {   // negative, showbase
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"($1,234,567.89)");
+#else
+        assert(ex == L"-$1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"($1,234,567.89)     ");
+#else
+        assert(ex == L"-$1,234,567.89      ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"($     1,234,567.89)");
+#else
+        assert(ex == L"-$      1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), false, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"     ($1,234,567.89)");
+#else
+        assert(ex == L"      -$1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+
+    // wchar_t, international
+    std::noshowbase(ios);
+    ios.unsetf(std::ios_base::adjustfield);
+    {   // zero
+        std::wstring v = L"0";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"0.00");
+    }
+    {   // negative one
+        std::wstring v = L"-1";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(0.01)");
+#else
+        assert(ex == L"-0.01");
+#endif
+    }
+    {   // positive
+        std::wstring v = L"123456789";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+        assert(ex == L"1,234,567.89");
+    }
+    {   // negative
+        std::wstring v = L"-123456789";
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(1,234,567.89)");
+#else
+        assert(ex == L"-1,234,567.89");
+#endif
+    }
+    {   // zero, showbase
+        std::wstring v = L"0";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"USD0.00");
+#else
+        assert(ex == L"USD 0.00");
+#endif
+    }
+    {   // negative one, showbase
+        std::wstring v = L"-1";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(USD0.01)");
+#else
+        assert(ex == L"-USD 0.01");
+#endif
+    }
+    {   // positive, showbase
+        std::wstring v = L"123456789";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"USD1,234,567.89");
+#else
+        assert(ex == L"USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, '*', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(USD1,234,567.89)");
+#else
+        assert(ex == L"-USD 1,234,567.89");
+#endif
+    }
+    {   // negative, showbase, left
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::left(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(USD1,234,567.89)   ");
+#else
+        assert(ex == L"-USD 1,234,567.89   ");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, internal
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::internal(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"(USD   1,234,567.89)");
+#else
+        assert(ex == L"-USD    1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+    {   // negative, showbase, right
+        std::wstring v = L"-123456789";
+        std::showbase(ios);
+        ios.width(20);
+        std::right(ios);
+        wchar_t str[100];
+        cpp17_output_iterator<wchar_t*> iter = f.put(cpp17_output_iterator<wchar_t*>(str), true, ios, ' ', v);
+        std::wstring ex(str, base(iter));
+#ifdef _WIN32
+        assert(ex == L"   (USD1,234,567.89)");
+#else
+        assert(ex == L"   -USD 1,234,567.89");
+#endif
+        assert(ios.width() == 0);
+    }
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/types.pass.cpp
new file mode 100644
index 0000000..a79ce5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/types.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class CharT, class OutputIterator = ostreambuf_iterator<CharT> >
+// class money_put
+//     : public locale::facet
+// {
+// public:
+//     typedef CharT                   char_type;
+//     typedef OutputIterator          iter_type;
+//     typedef basic_string<char_type> string_type;
+
+#include <locale>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::money_put<char> >::value), "");
+    static_assert((std::is_same<std::money_put<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::money_put<char>::iter_type, std::ostreambuf_iterator<char> >::value), "");
+    static_assert((std::is_same<std::money_put<char>::string_type, std::string>::value), "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_base_of<std::locale::facet, std::money_put<wchar_t> >::value), "");
+    static_assert((std::is_same<std::money_put<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::money_put<wchar_t>::iter_type, std::ostreambuf_iterator<wchar_t> >::value), "");
+    static_assert((std::is_same<std::money_put<wchar_t>::string_type, std::wstring>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/curr_symbol.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/curr_symbol.pass.cpp
new file mode 100644
index 0000000..620703e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/curr_symbol.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// string_type curr_symbol() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "locale_helpers.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        assert(f.curr_symbol() == std::string());
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.curr_symbol() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.curr_symbol() == std::wstring());
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.curr_symbol() == std::wstring());
+    }
+#endif
+
+#ifdef _WIN32
+    std::string curr_space = "";
+#else
+    std::string curr_space = " ";
+#endif
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.curr_symbol() == "$");
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.curr_symbol() == "USD" + curr_space);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#ifdef _WIN32
+    std::wstring w_curr_space = L"";
+#else
+    std::wstring w_curr_space = L" ";
+#endif
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.curr_symbol() == L"$");
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.curr_symbol() == L"USD" + w_curr_space);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+#ifdef __APPLE__
+        assert(f.curr_symbol() == " Eu");
+#else
+        assert(f.curr_symbol() == " \u20ac");
+#endif
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.curr_symbol() == " EUR");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+#ifdef __APPLE__
+        assert(f.curr_symbol() == L" Eu");
+#else
+        assert(f.curr_symbol() == L" \u20ac");
+#endif
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.curr_symbol() == L" EUR");
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.curr_symbol() == " " + static_cast<std::string>(LocaleHelpers::currency_symbol_ru_RU()));
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.curr_symbol() == " RUB");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.curr_symbol() == L" " + static_cast<std::wstring>(LocaleHelpers::currency_symbol_ru_RU()));
+    }
+
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.curr_symbol() == L" RUB");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+#ifdef _WIN32
+        assert(f.curr_symbol() == "\xC2\xA5"); // \u00A5
+#else
+        assert(f.curr_symbol() == "\xEF\xBF\xA5"); // \uFFE5
+#endif
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.curr_symbol() == "CNY" + curr_space);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+#ifdef _WIN32
+        assert(f.curr_symbol() == L"\u00A5");
+#else
+        assert(f.curr_symbol() == L"\uFFE5");
+#endif
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.curr_symbol() == L"CNY" + w_curr_space);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/decimal_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/decimal_point.pass.cpp
new file mode 100644
index 0000000..2d44963
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/decimal_point.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// charT decimal_point() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        assert(f.decimal_point() == std::numeric_limits<char>::max());
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.decimal_point() == std::numeric_limits<char>::max());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.decimal_point() == std::numeric_limits<wchar_t>::max());
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.decimal_point() == std::numeric_limits<wchar_t>::max());
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.decimal_point() == '.');
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.decimal_point() == '.');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.decimal_point() == L'.');
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.decimal_point() == L'.');
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.decimal_point() == ',');
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.decimal_point() == ',');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.decimal_point() == L',');
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.decimal_point() == L',');
+    }
+#endif
+
+// GLIBC 2.23 uses '.' as the decimal point while other C libraries use ','
+// GLIBC 2.27 corrects this
+#if defined(_CS_GNU_LIBC_VERSION)
+    const char sep = glibc_version_less_than("2.27") ? '.' : ',';
+#   ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    const wchar_t wsep = glibc_version_less_than("2.27") ? L'.' : L',';
+#   endif
+#else
+    const char sep = ',';
+#   ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    const wchar_t wsep = L',';
+#   endif
+#endif
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.decimal_point() == sep);
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.decimal_point() == sep);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.decimal_point() == wsep);
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.decimal_point() == wsep);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.decimal_point() == '.');
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.decimal_point() == '.');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.decimal_point() == L'.');
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.decimal_point() == L'.');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/frac_digits.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/frac_digits.pass.cpp
new file mode 100644
index 0000000..b490ed4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/frac_digits.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// class moneypunct_byname<charT, International>
+
+// int frac_digits() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        assert(f.frac_digits() == 0);
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.frac_digits() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.frac_digits() == 0);
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.frac_digits() == 0);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.frac_digits() == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/grouping.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/grouping.pass.cpp
new file mode 100644
index 0000000..ca5b673
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/grouping.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// XFAIL: darwin
+//
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// string grouping() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    // Monetary grouping strings may be terminated with 0 or CHAR_MAX, defining
+    // how the grouping is repeated.
+    std::string s = std::string(1, CHAR_MAX);
+    {
+        Fnf f("C", 1);
+        assert(f.grouping() == s || f.grouping() == "");
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.grouping() == s || f.grouping() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.grouping() == s || f.grouping() == "");
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.grouping() == s || f.grouping() == "");
+    }
+#endif
+
+#if defined( _WIN32) || defined(_AIX)
+    std::string us_grouping = "\3";
+#else
+    std::string us_grouping = "\3\3";
+#endif
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.grouping() == us_grouping);
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.grouping() == us_grouping);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.grouping() == us_grouping);
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.grouping() == us_grouping);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+#endif
+
+#if defined( _WIN32) || defined(_AIX)
+    std::string ru_grouping = "\3";
+#else
+    std::string ru_grouping = "\3\3";
+#endif
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.grouping() == ru_grouping);
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.grouping() == ru_grouping);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.grouping() == ru_grouping);
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.grouping() == ru_grouping);
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.grouping() == "\3");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/neg_format.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/neg_format.pass.cpp
new file mode 100644
index 0000000..a4a9216
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/neg_format.pass.cpp
@@ -0,0 +1,248 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// pattern neg_format() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+void assert_symbol_sign_none_value(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::symbol);
+    assert(p.field[1] == std::money_base::sign);
+    assert(p.field[2] == std::money_base::none);
+    assert(p.field[3] == std::money_base::value);
+}
+
+void assert_sign_symbol_none_value(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::sign);
+    assert(p.field[1] == std::money_base::symbol);
+    assert(p.field[2] == std::money_base::none);
+    assert(p.field[3] == std::money_base::value);
+}
+
+void assert_value_none_symbol_sign(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::value);
+    assert(p.field[1] == std::money_base::none);
+    assert(p.field[2] == std::money_base::symbol);
+    assert(p.field[3] == std::money_base::sign);
+}
+
+void assert_sign_value_none_symbol(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::sign);
+    assert(p.field[1] == std::money_base::value);
+    assert(p.field[2] == std::money_base::none);
+    assert(p.field[3] == std::money_base::symbol);
+}
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_symbol_sign_none_value(p);
+    }
+    {
+        Fnt f("C", 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_symbol_sign_none_value(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_symbol_sign_none_value(p);
+    }
+    {
+        Fwt f("C", 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_symbol_sign_none_value(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_symbol_none_value(p);
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_symbol_none_value(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_symbol_none_value(p);
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_symbol_none_value(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#ifdef __APPLE__
+        assert_value_none_symbol_sign(p);
+#else
+        assert_sign_value_none_symbol(p);
+#endif
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#ifdef __APPLE__
+        assert_value_none_symbol_sign(p);
+#else
+        assert_sign_value_none_symbol(p);
+#endif
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#ifdef __APPLE__
+        assert_value_none_symbol_sign(p);
+#else
+        assert_sign_value_none_symbol(p);
+#endif
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#ifdef __APPLE__
+        assert_value_none_symbol_sign(p);
+#else
+        assert_sign_value_none_symbol(p);
+#endif
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_value_none_symbol(p);
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_value_none_symbol(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_value_none_symbol(p);
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+        assert_sign_value_none_symbol(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#ifdef _AIX
+        assert_sign_symbol_none_value(p);
+#else
+        assert_symbol_sign_none_value(p);
+#endif
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#if defined(_WIN32) || defined(__APPLE__)
+        assert_symbol_sign_none_value(p);
+#else
+        assert_sign_symbol_none_value(p);
+#endif
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#ifdef _AIX
+        assert_sign_symbol_none_value(p);
+#else
+        assert_symbol_sign_none_value(p);
+#endif
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.neg_format();
+#if defined(_WIN32) || defined(__APPLE__)
+        assert_symbol_sign_none_value(p);
+#else
+        assert_sign_symbol_none_value(p);
+#endif
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/negative_sign.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/negative_sign.pass.cpp
new file mode 100644
index 0000000..be2f558
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/negative_sign.pass.cpp
@@ -0,0 +1,175 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// string_type negative_sign() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        assert(f.negative_sign() == std::string());
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.negative_sign() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.negative_sign() == std::wstring());
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.negative_sign() == std::wstring());
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+#if defined(_WIN32)
+        assert(f.negative_sign() == "()");
+#else
+        assert(f.negative_sign() == "-");
+#endif
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+#if defined(_WIN32)
+        assert(f.negative_sign() == "()");
+#else
+        assert(f.negative_sign() == "-");
+#endif
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+#if defined(_WIN32)
+        assert(f.negative_sign() == L"()");
+#else
+        assert(f.negative_sign() == L"-");
+#endif
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+#if defined(_WIN32)
+        assert(f.negative_sign() == L"()");
+#else
+        assert(f.negative_sign() == L"-");
+#endif
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.negative_sign() == "-");
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.negative_sign() == "-");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.negative_sign() == L"-");
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.negative_sign() == L"-");
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.negative_sign() == "-");
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.negative_sign() == "-");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.negative_sign() == L"-");
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.negative_sign() == L"-");
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.negative_sign() == "-");
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.negative_sign() == "-");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.negative_sign() == L"-");
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.negative_sign() == L"-");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/pos_format.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/pos_format.pass.cpp
new file mode 100644
index 0000000..671620a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/pos_format.pass.cpp
@@ -0,0 +1,232 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// pattern pos_format() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+void assert_symbol_sign_none_value(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::symbol);
+    assert(p.field[1] == std::money_base::sign);
+    assert(p.field[2] == std::money_base::none);
+    assert(p.field[3] == std::money_base::value);
+}
+
+void assert_sign_symbol_none_value(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::sign);
+    assert(p.field[1] == std::money_base::symbol);
+    assert(p.field[2] == std::money_base::none);
+    assert(p.field[3] == std::money_base::value);
+}
+
+void assert_value_none_symbol_sign(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::value);
+    assert(p.field[1] == std::money_base::none);
+    assert(p.field[2] == std::money_base::symbol);
+    assert(p.field[3] == std::money_base::sign);
+}
+
+void assert_sign_value_none_symbol(std::money_base::pattern p)
+{
+    assert(p.field[0] == std::money_base::sign);
+    assert(p.field[1] == std::money_base::value);
+    assert(p.field[2] == std::money_base::none);
+    assert(p.field[3] == std::money_base::symbol);
+}
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_symbol_sign_none_value(p);
+    }
+    {
+        Fnt f("C", 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_symbol_sign_none_value(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_symbol_sign_none_value(p);
+    }
+    {
+        Fwt f("C", 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_symbol_sign_none_value(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_symbol_none_value(p);
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_symbol_none_value(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_symbol_none_value(p);
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_symbol_none_value(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+        assert_sign_value_none_symbol(p);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+#if defined(__APPLE__) || defined(_AIX)
+        assert_sign_symbol_none_value(p);
+#else
+        assert_symbol_sign_none_value(p);
+#endif
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+#ifdef _WIN32
+        assert_symbol_sign_none_value(p);
+#else
+        assert_sign_symbol_none_value(p);
+#endif
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+#if defined(__APPLE__) || defined(_AIX)
+        assert_sign_symbol_none_value(p);
+#else
+        assert_symbol_sign_none_value(p);
+#endif
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        std::money_base::pattern p = f.pos_format();
+#ifdef _WIN32
+        assert_symbol_sign_none_value(p);
+#else
+        assert_sign_symbol_none_value(p);
+#endif
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/positive_sign.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/positive_sign.pass.cpp
new file mode 100644
index 0000000..088a09c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/positive_sign.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// string_type positive_sign() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        assert(f.positive_sign() == std::string());
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.positive_sign() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.positive_sign() == std::wstring());
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.positive_sign() == std::wstring());
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.positive_sign() == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.positive_sign() == L"");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/thousands_sep.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/thousands_sep.pass.cpp
new file mode 100644
index 0000000..2a70741
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/thousands_sep.pass.cpp
@@ -0,0 +1,186 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// NetBSD does not support LC_MONETARY at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class moneypunct_byname<charT, International>
+
+// charT thousands_sep() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+class Fnf
+    : public std::moneypunct_byname<char, false>
+{
+public:
+    explicit Fnf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, false>(nm, refs) {}
+};
+
+class Fnt
+    : public std::moneypunct_byname<char, true>
+{
+public:
+    explicit Fnt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<char, true>(nm, refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct_byname<wchar_t, false>
+{
+public:
+    explicit Fwf(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, false>(nm, refs) {}
+};
+
+class Fwt
+    : public std::moneypunct_byname<wchar_t, true>
+{
+public:
+    explicit Fwt(const std::string& nm, std::size_t refs = 0)
+        : std::moneypunct_byname<wchar_t, true>(nm, refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f("C", 1);
+        assert(f.thousands_sep() == std::numeric_limits<char>::max());
+    }
+    {
+        Fnt f("C", 1);
+        assert(f.thousands_sep() == std::numeric_limits<char>::max());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f("C", 1);
+        assert(f.thousands_sep() == std::numeric_limits<wchar_t>::max());
+    }
+    {
+        Fwt f("C", 1);
+        assert(f.thousands_sep() == std::numeric_limits<wchar_t>::max());
+    }
+#endif
+
+    {
+        Fnf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.thousands_sep() == ',');
+    }
+    {
+        Fnt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.thousands_sep() == ',');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_en_US_UTF_8, 1);
+        assert(f.thousands_sep() == L',');
+    }
+    {
+        Fwt f(LOCALE_en_US_UTF_8, 1);
+        assert(f.thousands_sep() == L',');
+    }
+#endif
+    {
+        Fnf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.thousands_sep() == ' ');
+    }
+    {
+        Fnt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.thousands_sep() == ' ');
+    }
+    // The below tests work around GLIBC's use of U202F as mon_thousands_sep.
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#if defined(_CS_GNU_LIBC_VERSION)
+    const wchar_t fr_sep = glibc_version_less_than("2.27") ? L' ' : L'\u202F';
+#elif defined(_WIN32)
+    const wchar_t fr_sep = L'\u00A0';
+#elif defined(_AIX)
+    const wchar_t fr_sep = L'\u202F';
+#else
+    const wchar_t fr_sep = L' ';
+#endif
+    {
+        Fwf f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.thousands_sep() == fr_sep);
+    }
+    {
+        Fwt f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.thousands_sep() == fr_sep);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    const char sep = ' ';
+    {
+        Fnf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.thousands_sep() == sep);
+    }
+    {
+        Fnt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.thousands_sep() == sep);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    // The below tests work around GLIBC's use of U00A0 as mon_thousands_sep
+    // and U002E as mon_decimal_point.
+    // TODO: Fix thousands_sep for 'char'.
+    // related to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16006
+#   if defined(_CS_GNU_LIBC_VERSION)
+    // FIXME libc++ specifically works around \u00A0 by translating it into
+    // a regular space.
+    const wchar_t wsep = glibc_version_less_than("2.27") ? L'\u00A0' : L'\u202F';
+#   elif defined(_WIN32) || defined(_AIX)
+    const wchar_t wsep = L'\u00A0';
+#   else
+    const wchar_t wsep = L' ';
+#   endif
+    {
+        Fwf f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.thousands_sep() == wsep);
+    }
+    {
+        Fwt f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.thousands_sep() == wsep);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    {
+        Fnf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.thousands_sep() == ',');
+    }
+    {
+        Fnt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.thousands_sep() == ',');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.thousands_sep() == L',');
+    }
+    {
+        Fwt f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.thousands_sep() == L',');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/ctor.pass.cpp
new file mode 100644
index 0000000..b9cef9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// explicit moneypunct(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/curr_symbol.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/curr_symbol.pass.cpp
new file mode 100644
index 0000000..51b4a16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/curr_symbol.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// string_type curr_symbol() const;
+
+// The C++ and C standards are silent.
+//   POSIX standard is being followed (as a guideline).
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.curr_symbol() == std::string());
+    }
+    {
+        Fnt f(1);
+        assert(f.curr_symbol() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.curr_symbol() == std::wstring());
+    }
+    {
+        Fwt f(1);
+        assert(f.curr_symbol() == std::wstring());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/decimal_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/decimal_point.pass.cpp
new file mode 100644
index 0000000..5109c66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/decimal_point.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// charT decimal_point() const;
+
+// The C++ and C standards are silent.
+//   POSIX standard is being followed (as a guideline).
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.decimal_point() == std::numeric_limits<char>::max());
+    }
+    {
+        Fnt f(1);
+        assert(f.decimal_point() == std::numeric_limits<char>::max());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.decimal_point() == std::numeric_limits<wchar_t>::max());
+    }
+    {
+        Fwt f(1);
+        assert(f.decimal_point() == std::numeric_limits<wchar_t>::max());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/frac_digits.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/frac_digits.pass.cpp
new file mode 100644
index 0000000..07c1f41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/frac_digits.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// int frac_digits() const;
+
+// The C++ and C standards are silent.
+//   POSIX standard is being followed (as a guideline).
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.frac_digits() == 0);
+    }
+    {
+        Fnt f(1);
+        assert(f.frac_digits() == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.frac_digits() == 0);
+    }
+    {
+        Fwt f(1);
+        assert(f.frac_digits() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/grouping.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/grouping.pass.cpp
new file mode 100644
index 0000000..19b1dc8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/grouping.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// string grouping() const;
+
+// The C++ and C standards are silent.
+//   POSIX standard is being followed (as a guideline).
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.grouping() == std::string());
+    }
+    {
+        Fnt f(1);
+        assert(f.grouping() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.grouping() == std::string());
+    }
+    {
+        Fwt f(1);
+        assert(f.grouping() == std::string());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/neg_format.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/neg_format.pass.cpp
new file mode 100644
index 0000000..4b3ac56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/neg_format.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// pattern neg_format() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        std::money_base::pattern p = f.neg_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+    {
+        Fnt f(1);
+        std::money_base::pattern p = f.neg_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        std::money_base::pattern p = f.neg_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+    {
+        Fwt f(1);
+        std::money_base::pattern p = f.neg_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/negative_sign.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/negative_sign.pass.cpp
new file mode 100644
index 0000000..f102bd5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/negative_sign.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// string_type negative_sign() const;
+
+// The C++ and C standards are silent.
+//   On this one, common sense is the guideline.
+//   If customers complain, I'll endeavor to minimize customer complaints
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.negative_sign() == "-");
+    }
+    {
+        Fnt f(1);
+        assert(f.negative_sign() == "-");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.negative_sign() == L"-");
+    }
+    {
+        Fwt f(1);
+        assert(f.negative_sign() == L"-");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/pos_format.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/pos_format.pass.cpp
new file mode 100644
index 0000000..b64dac6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/pos_format.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// pattern pos_format() const;
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        std::money_base::pattern p = f.pos_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+    {
+        Fnt f(1);
+        std::money_base::pattern p = f.pos_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        std::money_base::pattern p = f.pos_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+    {
+        Fwt f(1);
+        std::money_base::pattern p = f.pos_format();
+        assert(p.field[0] == std::money_base::symbol);
+        assert(p.field[1] == std::money_base::sign);
+        assert(p.field[2] == std::money_base::none);
+        assert(p.field[3] == std::money_base::value);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/positive_sign.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/positive_sign.pass.cpp
new file mode 100644
index 0000000..df413f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/positive_sign.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// string_type positive_sign() const;
+
+// The C++ and C standards are silent.
+//   POSIX standard is being followed (as a guideline).
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.positive_sign() == std::string());
+    }
+    {
+        Fnt f(1);
+        assert(f.positive_sign() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.positive_sign() == std::wstring());
+    }
+    {
+        Fwt f(1);
+        assert(f.positive_sign() == std::wstring());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/thousands_sep.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/thousands_sep.pass.cpp
new file mode 100644
index 0000000..57600b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.members/thousands_sep.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class moneypunct<charT, International>
+
+// charT thousands_sep() const;
+
+// The C++ and C standards are silent.
+//   POSIX standard is being followed (as a guideline).
+
+#include <locale>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::moneypunct<char> F;
+
+class Fnf
+    : public std::moneypunct<char, false>
+{
+public:
+    explicit Fnf(std::size_t refs = 0)
+        : std::moneypunct<char, false>(refs) {}
+};
+
+class Fnt
+    : public std::moneypunct<char, true>
+{
+public:
+    explicit Fnt(std::size_t refs = 0)
+        : std::moneypunct<char, true>(refs) {}
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+class Fwf
+    : public std::moneypunct<wchar_t, false>
+{
+public:
+    explicit Fwf(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, false>(refs) {}
+};
+
+class Fwt
+    : public std::moneypunct<wchar_t, true>
+{
+public:
+    explicit Fwt(std::size_t refs = 0)
+        : std::moneypunct<wchar_t, true>(refs) {}
+};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    {
+        Fnf f(1);
+        assert(f.thousands_sep() == std::numeric_limits<char>::max());
+    }
+    {
+        Fnt f(1);
+        assert(f.thousands_sep() == std::numeric_limits<char>::max());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        Fwf f(1);
+        assert(f.thousands_sep() == std::numeric_limits<wchar_t>::max());
+    }
+    {
+        Fwt f(1);
+        assert(f.thousands_sep() == std::numeric_limits<wchar_t>::max());
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/locale.moneypunct.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/money_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/money_base.pass.cpp
new file mode 100644
index 0000000..fb39976
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/money_base.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class money_base
+// {
+// public:
+//     enum part {none, space, symbol, sign, value};
+//     struct pattern {char field[4];};
+// };
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::money_base mb; ((void)mb);
+    static_assert(std::money_base::none == 0, "");
+    static_assert(std::money_base::space == 1, "");
+    static_assert(std::money_base::symbol == 2, "");
+    static_assert(std::money_base::sign == 3, "");
+    static_assert(std::money_base::value == 4, "");
+    static_assert(sizeof(std::money_base::pattern) == 4, "");
+    std::money_base::pattern p; (void)p;
+    p.field[0] = std::money_base::none;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/types.pass.cpp
new file mode 100644
index 0000000..7768cb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct/types.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class _CharT, bool _International = false>
+// class moneypunct
+//     : public locale::facet,
+//       public money_base
+// {
+// public:
+//     typedef _CharT                  char_type;
+//     typedef basic_string<char_type> string_type;
+//     static const bool intl = International;
+
+#include <locale>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::moneypunct<char> >::value), "");
+    static_assert((std::is_base_of<std::money_base, std::moneypunct<char> >::value), "");
+    static_assert((std::is_same<std::moneypunct<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::moneypunct<char>::string_type, std::string>::value), "");
+    test(std::moneypunct<char, false>::intl);
+    test(std::moneypunct<char, true>::intl);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_base_of<std::locale::facet, std::moneypunct<wchar_t> >::value), "");
+    static_assert((std::is_base_of<std::money_base, std::moneypunct<wchar_t> >::value), "");
+    static_assert((std::is_same<std::moneypunct<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::moneypunct<wchar_t>::string_type, std::wstring>::value), "");
+    test(std::moneypunct<wchar_t, false>::intl);
+    test(std::moneypunct<wchar_t, true>::intl);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/ctor.pass.cpp
new file mode 100644
index 0000000..4b8079f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// explicit num_put(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::num_put<char, char*> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_bool.pass.cpp
new file mode 100644
index 0000000..1ae9b63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_bool.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, bool v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual string_type do_truename() const {return "yes";}
+    virtual string_type do_falsename() const {return "no";}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    {
+        std::ios ios(0);
+        {
+            bool v = false;
+            char str[50];
+            cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+            std::string ex(str, base(iter));
+            assert(ex == "0");
+        }
+        {
+            bool v = true;
+            char str[50];
+            cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+            std::string ex(str, base(iter));
+            assert(ex == "1");
+        }
+    }
+    {
+        std::ios ios(0);
+        std::boolalpha(ios);
+        {
+            bool v = false;
+            char str[50];
+            cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+            std::string ex(str, base(iter));
+            assert(ex == "false");
+        }
+        {
+            bool v = true;
+            char str[50];
+            cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+            std::string ex(str, base(iter));
+            assert(ex == "true");
+        }
+    }
+    {
+        std::ios ios(0);
+        std::boolalpha(ios);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        {
+            bool v = false;
+            char str[50];
+            cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+            std::string ex(str, base(iter));
+            assert(ex == "no");
+        }
+        {
+            bool v = true;
+            char str[50];
+            cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+            std::string ex(str, base(iter));
+            assert(ex == "yes");
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_double.hex.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_double.hex.pass.cpp
new file mode 100644
index 0000000..21efa97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_double.hex.pass.cpp
@@ -0,0 +1,3636 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, double v) const;
+
+// With the Microsoft UCRT, printf("%a", 0.0) produces "0x0.0000000000000p+0"
+// while other C runtimes produce just "0x0p+0".
+// https://developercommunity.visualstudio.com/t/Printf-formatting-of-float-as-hex-prints/1660844
+// XFAIL: msvc
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_decimal_point() const {return ';';}
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+void test1()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = -0.;
+        std::ios ios(0);
+        std::hexfloat(ios);
+        // %a
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+            }
+        }
+    }
+}
+
+void test2()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = 1234567890.125;
+        std::ios ios(0);
+        std::hexfloat(ios);
+        // %a
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1.26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x1;26580b488p+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x********1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1.26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1.26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x1;26580b488p+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0x1;26580b488p+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1.26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X1;26580B488P+30********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X********1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1.26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1.26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X1;26580B488P+30*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0X1;26580B488P+30");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_double.pass.cpp
new file mode 100644
index 0000000..d7fbfd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_double.pass.cpp
@@ -0,0 +1,14303 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, double v) const;
+
+// XFAIL: win32-broken-printf-g-precision
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_decimal_point() const {return ';';}
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+void test1()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = +0.;
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test2()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = 1234567890.125;
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test3()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = +0.;
+        std::ios ios(0);
+        std::fixed(ios);
+        // %f
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test4()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = 1234567890.125;
+        std::ios ios(0);
+        std::fixed(ios);
+        // %f
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890***************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890***************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {}
+            ios.precision(60);
+            {}
+        }
+    }
+}
+
+void test5()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = -0.;
+        std::ios ios(0);
+        std::scientific(ios);
+        // %e
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+            }
+        }
+    }
+}
+
+void test6()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        double v = 1234567890.125;
+        std::ios ios(0);
+        std::scientific(ios);
+        // %e
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long.pass.cpp
new file mode 100644
index 0000000..17d5292
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long.pass.cpp
@@ -0,0 +1,346 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, long v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    {
+        std::ios ios(0);
+        long v = 0;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0");
+    }
+    {
+        std::ios ios(0);
+        long v = 1;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1");
+    }
+    {
+        std::ios ios(0);
+        long v = -1;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1");
+    }
+    {
+        std::ios ios(0);
+        long v = -1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1000");
+    }
+    {
+        std::ios ios(0);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1000");
+    }
+    {
+        std::ios ios(0);
+        std::showpos(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "+1000");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1750");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        std::showbase(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "01750");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E_8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7*****");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "**0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f**");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x**7f_fff_ff_f");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        long v = 1000;
+        std::right(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "***+1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        long v = 1000;
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "+1_00_0***");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        long v = 1000;
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "+***1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        long v = -1000;
+        std::right(ios);
+        std::showpos(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "***-1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        long v = -1000;
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1_00_0***");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        long v = -1000;
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-***1_00_0");
+        assert(ios.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.hex.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.hex.pass.cpp
new file mode 100644
index 0000000..c97c9a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.hex.pass.cpp
@@ -0,0 +1,3642 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, long double v) const;
+
+// With the Microsoft UCRT, printf("%a", 0.0) produces "0x0.0000000000000p+0"
+// while other C runtimes produce just "0x0p+0".
+// https://developercommunity.visualstudio.com/t/Printf-formatting-of-float-as-hex-prints/1660844
+// XFAIL: msvc
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_decimal_point() const {return ';';}
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+void test1()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = -0.;
+        std::ios ios(0);
+        std::hexfloat(ios);
+        // %a
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0p+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0x0p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0.p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0.p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0x0;p+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0x0;p+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0P+0******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0X0P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0.P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0.P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0X0;P+0*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0X0;P+0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+            }
+        }
+    }
+}
+
+void test2()
+{
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+#if (defined(__APPLE__) || defined(TEST_HAS_GLIBC) || defined(__MINGW32__)) && defined(__x86_64__)
+// This test is failing on FreeBSD, possibly due to different representations
+// of the floating point numbers.
+// This test is failing in MSVC environments, where long double is equal to regular
+// double, and instead of "0x9.32c05a44p+27", this prints "0x1.26580b4880000p+30".
+    const my_facet f(1);
+    char str[200];
+    {
+        long double v = 1234567890.125;
+        std::ios ios(0);
+        std::hexfloat(ios);
+        // %a
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                                ios.width(0);
+                            ios.imbue(lc);
+                            {
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9.32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x9;32c05a44p+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0x*********9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9.32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9.32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0x9;32c05a44p+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0x9;32c05a44p+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9.32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X9;32C05A44P+27*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0X*********9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9.32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9.32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0X9;32C05A44P+27********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********0X9;32C05A44P+27");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.pass.cpp
new file mode 100644
index 0000000..ce87cbb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_double.pass.cpp
@@ -0,0 +1,22676 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, long double v) const;
+
+// XFAIL: win32-broken-printf-g-precision
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_decimal_point() const {return ';';}
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+void test1()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = +0.;
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test2()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = -0.;
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;00000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0.000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******-0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******0;000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;00000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test3()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = 1234567890.125;
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457e+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457e+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;23457E+09**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1.23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;23457E+09*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1;23457E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1234567890.125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******1_234_567_89_0;125");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;12500000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test4()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+#ifdef _AIX
+    std::string inf = "INF";
+#else
+    std::string inf = "inf";
+#endif
+
+    const my_facet f(1);
+    {
+        long double v = -INFINITY;
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-" + inf + "*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************" + inf);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-INF*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-INF");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************INF");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {}
+            ios.precision(60);
+            {}
+        }
+    }
+}
+
+void test5()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+#if defined(_AIX)
+    std::string nan= "NaNQ";
+    std::string NaN = "NaNQ";
+    std::string nan_padding25 = "*********************";
+    std::string pnan_sign = "+";
+    std::string pnan_padding25 = "********************";
+#else
+    std::string nan= "nan";
+    std::string NaN = "NAN";
+    std::string nan_padding25 = "**********************";
+#if defined(TEST_HAS_GLIBC) || defined(_WIN32) || \
+        (defined(__BIONIC__) && !defined(_LIBCPP_TESTING_ANDROID_PRINTF_NAN_NO_SIGN))
+    std::string pnan_sign = "+";
+    std::string pnan_padding25 = "*********************";
+#else
+    std::string pnan_sign = "";
+    std::string pnan_padding25 = "**********************";
+#endif
+#endif
+    {
+        long double v = std::nan("");
+        std::ios ios(0);
+        // %g
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + nan + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + nan);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + nan);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == NaN + nan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == nan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + NaN + pnan_padding25);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_padding25 + pnan_sign + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == pnan_sign + pnan_padding25 + NaN);
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {}
+            ios.precision(6);
+            {}
+            ios.precision(16);
+            {}
+            ios.precision(60);
+            {}
+        }
+    }
+}
+
+void test6()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = +0.;
+        std::ios ios(0);
+        std::fixed(ios);
+        // %f
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0************************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************+0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************+0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************+0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************+0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;0000000000000000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******+0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test7()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = -0.;
+        std::ios ios(0);
+        std::fixed(ios);
+        // %f
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0***********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********************-0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-***********************0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;**********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********************-0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-**********************0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0.0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0.0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0*********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********************-0;0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*********************0;0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0.000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****************-0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-****************0;000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0.0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0000000000000000******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******-0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******0;0000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000000000000000000000000000000000000000000000000000000000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+void test8()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = 1234567890.125;
+        std::ios ios(0);
+        std::fixed(ios);
+        // %f
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890***************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890***************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0***********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890**************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**************+1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**************1234567890");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0**********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "**********+1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+**********1_234_567_89_0");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************+1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*************1234567890.");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********+1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*********1_234_567_89_0;");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.1*************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;1*********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.1************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************+1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+************1234567890.1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;1********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********+1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+********1_234_567_89_0;1");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1234567890.125000********");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1_234_567_89_0;125000****");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "****1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1234567890.125000*******");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******+1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******1234567890.125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1_234_567_89_0;125000***");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "***+1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+***1_234_567_89_0;125000");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {}
+            ios.precision(60);
+            {}
+        }
+    }
+}
+
+void test9()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = -0.;
+        std::ios ios(0);
+        std::scientific(ios);
+        // %e
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0e+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;e+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0E+00*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************-0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*******************0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0.E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;E+00******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************-0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-******************0;E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0e+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0.0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;0E+00*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************-0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-*****************0;0E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000e+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000e+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0.000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0.000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-0;000000E+00************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "************-0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "-************0;000000E+00");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+            }
+        }
+    }
+}
+
+void test10()
+{
+    char str[200];
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = 1234567890.125;
+        std::ios ios(0);
+        std::scientific(ios);
+        // %e
+        {
+            ios.precision(0);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1e+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1e+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1E+09********************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "********************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1E+09*******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*******************+1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*******************1E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1.E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************+1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+******************1;E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(1);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2e+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2e+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;2E+09******************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "******************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1.2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;2E+09*****************");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "*****************+1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+*****************1;2E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            ios.precision(6);
+            {
+            }
+            ios.precision(16);
+            {
+            }
+            ios.precision(60);
+            {
+                std::nouppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000e+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+                std::uppercase(ios);
+                {
+                    std::noshowpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                    std::showpos(ios);
+                    {
+                        std::noshowpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                        std::showpoint(ios);
+                        {
+                            ios.imbue(lc);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1.234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                            ios.imbue(lg);
+                            {
+                                ios.width(0);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::left(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::right(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                                ios.width(25);
+                                std::internal(ios);
+                                {
+                                    cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+                                    std::string ex(str, base(iter));
+                                    assert(ex == "+1;234567890125000000000000000000000000000000000000000000000000E+09");
+                                    assert(ios.width() == 0);
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+    test7();
+    test8();
+    test9();
+    test10();
+    std::locale lc = std::locale::classic();
+    std::locale lg(lc, new my_numpunct);
+    const my_facet f(1);
+    {
+        long double v = -INFINITY; ((void)v);
+    }
+    {
+        long double v = std::nan(""); ((void)v);
+    }
+
+    {
+        long double v = +0.; ((void)v);
+    }
+    {
+        long double v = -INFINITY; ((void)v);
+    }
+    {
+        long double v = std::nan(""); ((void)v);
+    }
+    {
+        long double v = -INFINITY; ((void)v);
+    }
+    {
+        long double v = std::nan(""); ((void)v);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_long.pass.cpp
new file mode 100644
index 0000000..106474b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long_long.pass.cpp
@@ -0,0 +1,346 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, long long v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    {
+        std::ios ios(0);
+        long long v = 0;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0");
+    }
+    {
+        std::ios ios(0);
+        long long v = 1;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1");
+    }
+    {
+        std::ios ios(0);
+        long long v = -1;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1");
+    }
+    {
+        std::ios ios(0);
+        long long v = -1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1000");
+    }
+    {
+        std::ios ios(0);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1000");
+    }
+    {
+        std::ios ios(0);
+        std::showpos(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "+1000");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1750");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        std::showbase(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "01750");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E_8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7*****");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "**0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f**");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x**7f_fff_ff_f");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        long long v = 1000;
+        std::right(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "***+1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        long long v = 1000;
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "+1_00_0***");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        long long v = 1000;
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "+***1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        long long v = -1000;
+        std::right(ios);
+        std::showpos(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "***-1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        long long v = -1000;
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-1_00_0***");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        long long v = -1000;
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "-***1_00_0");
+        assert(ios.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_pointer.pass.cpp
new file mode 100644
index 0000000..1315274
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_pointer.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, void* v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    {
+        std::ios ios(0);
+        void* v = 0;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        char expected_str[32] = {};
+        // num_put::put uses %p for pointer types, but the exact format of %p is
+        // implementation defined behavior for the C library. Compare output to
+        // snprintf for portability.
+        int rc = snprintf(expected_str, sizeof(expected_str), "%p", v);
+        assert(rc > 0);
+        assert(ex == expected_str);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long.pass.cpp
new file mode 100644
index 0000000..2bb5cc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long.pass.cpp
@@ -0,0 +1,349 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, unsigned long v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    {
+        std::ios ios(0);
+        unsigned long v = 0;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0");
+    }
+    {
+        std::ios ios(0);
+        unsigned long v = 1;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1");
+    }
+    {
+        std::ios ios(0);
+        unsigned long v = static_cast<unsigned long>(-1);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == (sizeof(unsigned long) == 4 ? "4294967295" : "18446744073709551615"));
+    }
+    {
+        std::ios ios(0);
+        unsigned long v = static_cast<unsigned long>(-1000);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == (sizeof(unsigned long) == 4 ? "4294966296" : "18446744073709550616"));
+    }
+    {
+        std::ios ios(0);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1000");
+    }
+    {
+        std::ios ios(0);
+        std::showpos(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1000");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1750");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        std::showbase(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "01750");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        unsigned long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E_8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        unsigned long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        unsigned long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        unsigned long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        unsigned long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        unsigned long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7*****");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        unsigned long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        unsigned long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "**0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        unsigned long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f**");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        unsigned long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x**7f_fff_ff_f");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        unsigned long v = 1000;
+        std::right(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "****1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        unsigned long v = 1000;
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1_00_0****");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        unsigned long v = 1000;
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "****1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        unsigned long v = static_cast<unsigned long>(-1000);
+        std::right(ios);
+        std::showpos(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == (sizeof(unsigned long) == 4 ? "4_294_966_29_6"
+                                                 : "18_446_744_073_709_550_61_6"));
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        unsigned long v = static_cast<unsigned long>(-1000);
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == (sizeof(unsigned long) == 4 ? "4_294_966_29_6"
+                                                 : "18_446_744_073_709_550_61_6"));
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        unsigned long v = static_cast<unsigned long>(-1000);
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == (sizeof(unsigned long) == 4 ? "4_294_966_29_6"
+                                                 : "18_446_744_073_709_550_61_6"));
+        assert(ios.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long_long.pass.cpp
new file mode 100644
index 0000000..f595630
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long_long.pass.cpp
@@ -0,0 +1,346 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& iob, char_type fill, unsigned long long v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    {
+        std::ios ios(0);
+        unsigned long long v = 0;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0");
+    }
+    {
+        std::ios ios(0);
+        unsigned long long v = 1;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1");
+    }
+    {
+        std::ios ios(0);
+        unsigned long long v = static_cast<unsigned long long>(-1);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "18446744073709551615");
+    }
+    {
+        std::ios ios(0);
+        unsigned long long v = static_cast<unsigned long long>(-1000);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "18446744073709550616");
+    }
+    {
+        std::ios ios(0);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1000");
+    }
+    {
+        std::ios ios(0);
+        std::showpos(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1000");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1750");
+    }
+    {
+        std::ios ios(0);
+        std::oct(ios);
+        std::showbase(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "01750");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x3e8");
+    }
+    {
+        std::ios ios(0);
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::uppercase(ios);
+        unsigned long long v = 1000;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0X3E_8");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        unsigned long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        unsigned long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        unsigned long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        unsigned long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        unsigned long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0_123_46_7*****");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::oct(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        unsigned long long v = 0123467;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "*****0_123_46_7");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::right(ios);
+        ios.width(15);
+        unsigned long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "**0x7f_fff_ff_f");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::left(ios);
+        ios.width(15);
+        unsigned long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x7f_fff_ff_f**");
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::hex(ios);
+        std::showbase(ios);
+        std::internal(ios);
+        ios.width(15);
+        unsigned long long v = 2147483647;
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "0x**7f_fff_ff_f");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        unsigned long long v = 1000;
+        std::right(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "****1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        unsigned long long v = 1000;
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "1_00_0****");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        std::showpos(ios);
+        unsigned long long v = 1000;
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "****1_00_0");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        unsigned long long v = static_cast<unsigned long long>(-1000);
+        std::right(ios);
+        std::showpos(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "18_446_744_073_709_550_61_6");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        unsigned long long v = static_cast<unsigned long long>(-1000);
+        std::left(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "18_446_744_073_709_550_61_6");
+        assert(ios.width() == 0);
+    }
+    {
+        std::ios ios(0);
+        ios.imbue(std::locale(std::locale::classic(), new my_numpunct));
+        unsigned long long v = static_cast<unsigned long long>(-1000);
+        std::internal(ios);
+        ios.width(10);
+        char str[50];
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', v);
+        std::string ex(str, base(iter));
+        assert(ex == "18_446_744_073_709_550_61_6");
+        assert(ios.width() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/types.pass.cpp
new file mode 100644
index 0000000..aef9494
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.nm.put/types.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT, class OutputIterator = ostreambuf_iterator<charT> >
+// class num_put
+//     : public locale::facet
+// {
+// public:
+//     typedef charT          char_type;
+//     typedef OutputIterator iter_type;
+
+#include <locale>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::num_put<char> >::value), "");
+    static_assert((std::is_same<std::num_put<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::num_put<char>::iter_type, std::ostreambuf_iterator<char> >::value), "");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_base_of<std::locale::facet, std::num_put<wchar_t> >::value), "");
+    static_assert((std::is_same<std::num_put<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::num_put<wchar_t>::iter_type, std::ostreambuf_iterator<wchar_t> >::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/ctor.pass.cpp
new file mode 100644
index 0000000..cd18e69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// explicit num_get(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::num_get<char, char*> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_bool.pass.cpp
new file mode 100644
index 0000000..6b8c3d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_bool.pass.cpp
@@ -0,0 +1,232 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, bool& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class p1
+    : public std::numpunct<char>
+{
+public:
+    p1() : std::numpunct<char>() {}
+
+protected:
+    virtual string_type do_truename() const {return "a";}
+    virtual string_type do_falsename() const {return "abb";}
+};
+
+class p2
+    : public std::numpunct<char>
+{
+public:
+    p2() : std::numpunct<char>() {}
+
+protected:
+    virtual string_type do_truename() const {return "a";}
+    virtual string_type do_falsename() const {return "ab";}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(b == true);
+    }
+    {
+        const char str[] = "0";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(b == false);
+    }
+    {
+        const char str[] = "12";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(b == true);
+    }
+    {
+        const char str[] = "*12";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+0);
+        assert(err == ios.failbit);
+        assert(b == false);
+    }
+    std::boolalpha(ios);
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+0);
+        assert(err == ios.failbit);
+        assert(b == false);
+    }
+    {
+        const char str[] = "true";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(b == true);
+    }
+    {
+        const char str[] = "false";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, b);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(b == false);
+    }
+    ios.imbue(std::locale(ios.getloc(), new p1));
+    {
+        const char str[] = "a";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+1),
+                  ios, err, b);
+        assert(base(iter) == str+1);
+        assert(err == ios.eofbit);
+        assert(b == true);
+    }
+    {
+        const char str[] = "abc";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+3),
+                  ios, err, b);
+        assert(base(iter) == str+2);
+        assert(err == ios.failbit);
+        assert(b == false);
+    }
+    {
+        const char str[] = "acc";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+3),
+                  ios, err, b);
+        assert(base(iter) == str+1);
+        assert(err == ios.goodbit);
+        assert(b == true);
+    }
+    ios.imbue(std::locale(ios.getloc(), new p2));
+    {
+        const char str[] = "a";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+1),
+                  ios, err, b);
+        assert(base(iter) == str+1);
+        assert(err == ios.eofbit);
+        assert(b == true);
+    }
+    {
+        const char str[] = "ab";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+2),
+                  ios, err, b);
+        assert(base(iter) == str+2);
+        assert(err == ios.eofbit);
+        assert(b == false);
+    }
+    {
+        const char str[] = "abc";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+3),
+                  ios, err, b);
+        assert(base(iter) == str+2);
+        assert(err == ios.goodbit);
+        assert(b == false);
+    }
+    {
+        const char str[] = "ac";
+        std::ios_base::iostate err = ios.goodbit;
+        bool b;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+2),
+                  ios, err, b);
+        assert(base(iter) == str+1);
+        assert(err == ios.goodbit);
+        assert(b == true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_double.pass.cpp
new file mode 100644
index 0000000..c802ab7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_double.pass.cpp
@@ -0,0 +1,281 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, double& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "hexfloat.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_decimal_point() const {return ';';}
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    double v = -1;
+    {
+        const char str[] = "123";
+        assert((ios.flags() & ios.basefield) == ios.dec);
+        assert(ios.getloc().name() == "C");
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        const char str[] = "-123";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -123);
+    }
+    {
+        const char str[] = "123.5";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123.5);
+    }
+    {
+        const char str[] = "125e-1";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 125e-1);
+    }
+    {
+        const char str[] = "0x125p-1";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == hexfloat<double>(0x125, 0, -1));
+    }
+    {
+        const char str[] = "inf";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "INF";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "-inf";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -INFINITY);
+    }
+    {
+        const char str[] = "-INF";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -INFINITY);
+    }
+    {
+        const char str[] = "nan";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::isnan(v));
+    }
+    {
+        const char str[] = "NAN";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::isnan(v));
+    }
+    {
+        v = -1;
+        const char str[] = "123_456_78_9;125";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+3);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        // See PR11871
+        v = -1;
+        const char str[] = "2-";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+1);
+        assert(err == ios.goodbit);
+        assert(v == 2);
+    }
+    {
+        v = -1;
+        const char str[] = "1.79779e+309"; // unrepresentable
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == HUGE_VAL);
+    }
+    {
+        v = -1;
+        const char str[] = "-1.79779e+308"; // unrepresentable
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == -HUGE_VAL);
+    }
+    ios.imbue(std::locale(std::locale(), new my_numpunct));
+    {
+        v = -1;
+        const char str[] = "123_456_78_9;125";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123456789.125);
+    }
+    {
+        v = -1;
+        const char str[] = "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+    }
+    {
+        // See PR15445
+        v = -1;
+        const char str[] = "3;14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651e+10";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::abs(v - 3.14159265358979e+10)/3.14159265358979e+10 < 1.e-8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_float.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_float.pass.cpp
new file mode 100644
index 0000000..79c8480
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_float.pass.cpp
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, float& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "hexfloat.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    float v = -1;
+    {
+        const char str[] = "123";
+        assert((ios.flags() & ios.basefield) == ios.dec);
+        assert(ios.getloc().name() == "C");
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        const char str[] = "-123";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -123);
+    }
+    {
+        const char str[] = "123.5";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123.5);
+    }
+    {
+        const char str[] = "125e-1";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 125e-1);
+    }
+    {
+        const char str[] = "0x125p-1";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == hexfloat<float>(0x125, 0, -1));
+    }
+    {
+        const char str[] = "inf";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "INF";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "-inf";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -INFINITY);
+    }
+    {
+        const char str[] = "-INF";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -INFINITY);
+    }
+    {
+        const char str[] = "nan";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::isnan(v));
+    }
+    {
+        const char str[] = "NAN";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::isnan(v));
+    }
+    {
+        v = -1;
+        const char str[] = "3.40283e+39"; // unrepresentable
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == HUGE_VALF);
+    }
+    {
+        v = -1;
+        const char str[] = "-3.40283e+38"; // unrepresentable
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == -HUGE_VALF);
+
+    }
+    {
+        v = -1;
+        const char str[] = "2-";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+1);
+        assert(err == ios.goodbit);
+        assert(v == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long.pass.cpp
new file mode 100644
index 0000000..45270d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long.pass.cpp
@@ -0,0 +1,528 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, long& v) const;
+
+// This test exercises the fix for PR28704, which isn't in the dylib for
+// some systems.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <limits>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    long v = -1;
+    const std::ios_base::fmtflags zf = static_cast<std::ios_base::fmtflags>(0);
+    {
+        const char str[] = "123";
+        assert((ios.flags() & ios.basefield) == ios.dec);
+        assert(ios.getloc().name() == "C");
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+3);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        const char str[] = "-123";
+        assert((ios.flags() & ios.basefield) == ios.dec);
+        assert(ios.getloc().name() == "C");
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+4);
+        assert(err == ios.goodbit);
+        assert(v == -123);
+    }
+    {
+        const char str[] = "123";
+        std::oct(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+3);
+        assert(err == ios.goodbit);
+        assert(v == 83);
+    }
+    {
+        const char str[] = "123";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+3);
+        assert(err == ios.goodbit);
+        assert(v == 291);
+    }
+    {
+        const char str[] = "0x123";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 291);
+    }
+    {
+        const char str[] = "123";
+        ios.setf(zf, ios.basefield);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        const char str[] = "0x123";
+        ios.setf(zf, ios.basefield);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 291);
+    }
+    {
+        const char str[] = "0123";
+        ios.setf(zf, ios.basefield);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 83);
+    }
+    {
+        // See PR11871
+        const char str[] = "2-";
+        ios.setf(zf, ios.basefield);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+1);
+        assert(err == ios.goodbit);
+        assert(v == 2);
+    }
+    std::dec(ios);
+    ios.imbue(std::locale(std::locale(), new my_numpunct));
+    {
+        v = -1;
+        const char str[] = "123"; // no separators at all
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        v = -1;
+        const char str[] = "+1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "+_1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "_+1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "+1__";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "+_1_";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "_+1_";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "+__1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "_+_1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "__+1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_2";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 12);
+    }
+    {
+        v = -1;
+        const char str[] = "+12_";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 12);
+    }
+    {
+        v = -1;
+        const char str[] = "+_12";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 12);
+    }
+    {
+        v = -1;
+        const char str[] = "+1__2";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 12);
+    }
+    {
+        v = -1;
+        const char str[] = "+12_3";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_23";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 123);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_23_4";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1234);
+    }
+    {
+        v = -1;
+        const char str[] = "+123_4";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1234);
+    }
+    {
+        v = -1;
+        const char str[] = "+12_34";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1234);
+    }
+    {
+        v = -1;
+        const char str[] = "+12_34_5";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 12345);
+    }
+    {
+        v = -1;
+        const char str[] = "+123_45_6";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123456);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_23_45_6";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 123456);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_234_56_7";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1234567);
+    }
+    {
+        v = -1;
+        const char str[] = "+1_234_567_89_0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1234567890);
+    }
+    {
+        v = -1;
+        const char str[] = "-1_234_567_89_0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -1234567890);
+    }
+    {
+        v = -1;
+        const char str[] = "1_234_567_89_0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1234567890);
+    }
+    {
+        v = -1;
+        const char str[] = "1234_567_89_0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 1234567890);
+    }
+    {
+        v = -1;
+        const char str[] = "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_"
+                           "1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_1_2_3_4_5_6_7_8_9_0_";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == std::numeric_limits<long>::max());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_double.pass.cpp
new file mode 100644
index 0000000..e2b2aea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_double.pass.cpp
@@ -0,0 +1,270 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, long double& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <cmath>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "hexfloat.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    long double v = -1;
+    {
+        const char str[] = "123";
+        assert((ios.flags() & ios.basefield) == ios.dec);
+        assert(ios.getloc().name() == "C");
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123);
+    }
+    {
+        const char str[] = "-123";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -123);
+    }
+    {
+        const char str[] = "123.5";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 123.5);
+    }
+    {
+        const char str[] = "125e-1";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 125e-1);
+    }
+    {
+        const char str[] = "0x125p-1";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == hexfloat<long double>(0x125, 0, -1));
+    }
+    {
+        const char str[] = "inf";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "INF";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "-inf";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -INFINITY);
+    }
+    {
+        const char str[] = "-INF";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -INFINITY);
+    }
+    {
+        const char str[] = "nan";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::isnan(v));
+    }
+    {
+        const char str[] = "NAN";
+        std::hex(ios);
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(std::isnan(v));
+    }
+    {
+        const char str[] = "1.189731495357231765021264e+49321";
+        std::ios_base::iostate err = ios.goodbit;
+        v = 0;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "1.189731495357231765021264e+49329";
+        std::ios_base::iostate err = ios.goodbit;
+        v = 0;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "11.189731495357231765021264e+4932";
+        std::ios_base::iostate err = ios.goodbit;
+        v = 0;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "91.189731495357231765021264e+4932";
+        std::ios_base::iostate err = ios.goodbit;
+        v = 0;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == INFINITY);
+    }
+    {
+        const char str[] = "304888344611713860501504000000";
+        std::ios_base::iostate err = ios.goodbit;
+        v = 0;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err != ios.failbit);
+        assert(v == 304888344611713860501504000000.0L);
+    }
+    {
+        v = -1;
+        const char str[] = "1.19973e+4933"; // unrepresentable
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == HUGE_VALL);
+    }
+    {
+        v = -1;
+        const char str[] = "-1.18974e+4932"; // unrepresentable
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == -HUGE_VALL);
+    }
+    {
+        v = -1;
+        const char str[] = "2-";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+1);
+        assert(err == ios.goodbit);
+        assert(v == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_long.pass.cpp
new file mode 100644
index 0000000..98ad21f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_long.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, long long& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    long long v = -1;
+    {
+        const char str[] = "0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0);
+    }
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1);
+    }
+    {
+        const char str[] = "-1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == -1);
+    }
+    std::hex(ios);
+    {
+        const char str[] = "0x7FFFFFFFFFFFFFFF";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0x7FFFFFFFFFFFFFFFLL);
+    }
+    {
+        const char str[] = "-0x8000000000000000";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        const long long expect = 0x8000000000000000LL;
+        assert(v == expect);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_pointer.pass.cpp
new file mode 100644
index 0000000..4819e07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_pointer.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, void*& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    {
+        const char str[] = "0x0";
+        std::ios_base::iostate err = ios.goodbit;
+        void* p;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, p);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(p == 0);
+    }
+    {
+        const char str[] = "0x73";
+        std::ios_base::iostate err = ios.goodbit;
+        void* p;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, p);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(p == (void*)0x73);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_int.pass.cpp
new file mode 100644
index 0000000..bee1be0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_int.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, unsigned int& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    unsigned int v = static_cast<unsigned int>(-1);
+    {
+        const char str[] = "0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0);
+    }
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1);
+    }
+    std::hex(ios);
+    {
+        const char str[] = "0xFFFFFFFF";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0xFFFFFFFF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_long.pass.cpp
new file mode 100644
index 0000000..b087bdc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_long.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, unsigned long& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    unsigned long v = static_cast<unsigned long>(-1);
+    {
+        const char str[] = "0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0);
+    }
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1);
+    }
+    std::hex(ios);
+    {
+        const char str[] = "0xFFFFFFFF";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0xFFFFFFFF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_long_long.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_long_long.pass.cpp
new file mode 100644
index 0000000..6769aeb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_long_long.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, unsigned long long& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    unsigned long long v = static_cast<unsigned long long>(-1);
+    {
+        const char str[] = "0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0);
+    }
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1);
+    }
+    std::hex(ios);
+    {
+        const char str[] = "0xFFFFFFFFFFFFFFFF";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0xFFFFFFFFFFFFFFFFULL);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_short.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_short.pass.cpp
new file mode 100644
index 0000000..bec9a7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_unsigned_short.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, unsigned short& v) const;
+
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+class my_numpunct
+    : public std::numpunct<char>
+{
+public:
+    my_numpunct() : std::numpunct<char>() {}
+
+protected:
+    virtual char_type do_thousands_sep() const {return '_';}
+    virtual std::string do_grouping() const {return std::string("\1\2\3");}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    unsigned short v = static_cast<unsigned short>(-1);
+    {
+        const char str[] = "0";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0);
+    }
+    {
+        const char str[] = "1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 1);
+    }
+    std::hex(ios);
+    {
+        const char str[] = "0xFFFF";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == 0xFFFF);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/test_min_max.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/test_min_max.pass.cpp
new file mode 100644
index 0000000..dd77f7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/test_min_max.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cassert>
+#include <limits>
+#include <sstream>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+bool check_stream_failed(std::string const& val) {
+    std::istringstream ss(val);
+    T result;
+    return !(ss >> result);
+}
+
+template<typename T>
+void check_limits()
+{
+    const bool is_unsigned = std::is_unsigned<T>::value;
+    T minv = std::numeric_limits<T>::min();
+    T maxv = std::numeric_limits<T>::max();
+
+    std::ostringstream miniss, maxiss;
+    assert(miniss << minv);
+    assert(maxiss << maxv);
+    std::string mins = miniss.str();
+    std::string maxs = maxiss.str();
+
+    std::istringstream maxoss(maxs), minoss(mins);
+
+    T new_minv, new_maxv;
+    assert(maxoss >> new_maxv);
+    assert(minoss >> new_minv);
+
+    assert(new_minv == minv);
+    assert(new_maxv == maxv);
+
+    maxs[maxs.size() - 1]++;
+    assert(check_stream_failed<T>(maxs));
+    if (!is_unsigned) {
+        mins[mins.size() - 1]++;
+        assert(check_stream_failed<T>(mins));
+    }
+}
+
+int main(int, char**)
+{
+    check_limits<short>();
+    check_limits<unsigned short>();
+    check_limits<int>();
+    check_limits<unsigned int>();
+    check_limits<long>();
+    check_limits<unsigned long>();
+    check_limits<long long>();
+    check_limits<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/test_neg_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/test_neg_one.pass.cpp
new file mode 100644
index 0000000..5aa2fe6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/test_neg_one.pass.cpp
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class num_get<charT, InputIterator>
+
+// iter_type get(iter_type in, iter_type end, ios_base&,
+//               ios_base::iostate& err, unsigned int& v) const;
+
+#include <limits>
+#include <locale>
+#include <ios>
+#include <cassert>
+#include <streambuf>
+#include <sstream>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+TEST_MSVC_DIAGNOSTIC_IGNORED(4146) // unary minus operator applied to unsigned type, result still unsigned
+
+typedef std::num_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+template <class T>
+std::string make_neg_string(T value) {
+  std::ostringstream ss;
+  assert(ss << value);
+  std::string res = ss.str();
+  return '-' + res;
+}
+
+template <class T>
+void test_neg_one() {
+    const my_facet f(1);
+    std::ios ios(0);
+    T v = static_cast<T>(42);
+    {
+        const char str[] = "-1";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.goodbit);
+        assert(v == T(-1));
+    }
+    v = 42;
+    {
+        const char str[] = "-";
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+sizeof(str)),
+                  ios, err, v);
+        assert(base(iter) == str+sizeof(str)-1);
+        assert(err == ios.failbit);
+        assert(v == 0);
+    }
+}
+
+template <class T>
+void test_negate() {
+    typedef typename std::make_signed<T>::type SignedT;
+    const my_facet f(1);
+    std::ios ios(0);
+    T v = 42;
+    {
+        T value = std::numeric_limits<SignedT>::max();
+        ++value;
+        std::string std_str = make_neg_string(value);
+        const char* str = std_str.data();
+        size_t size = std_str.size();
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+size+1),
+                  ios, err, v);
+        assert(base(iter) == str+size);
+        assert(err == ios.goodbit);
+        T expected = -value;
+        assert(v == expected);
+    }
+    v = 42;
+    {
+        T value = std::numeric_limits<SignedT>::max();
+        ++value;
+        ++value;
+        std::string std_str = make_neg_string(value);
+        const char* str = std_str.data();
+        size_t size = std_str.size();
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+size+1),
+                  ios, err, v);
+        assert(base(iter) == str+size);
+        assert(err == ios.goodbit);
+        T expected = -value;
+        assert(v == expected);
+    }
+    v = 42;
+    {
+        T value = std::numeric_limits<T>::max();
+        std::string std_str = make_neg_string(value);
+        const char* str = std_str.data();
+        size_t size = std_str.size();
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+size+1),
+                  ios, err, v);
+        assert(base(iter) == str+size);
+        assert(err == ios.goodbit);
+        T expected = -value;
+        assert(v == expected);
+    }
+    v = 42;
+    {
+        std::string std_str = make_neg_string(std::numeric_limits<T>::max());
+        std_str.back()++;
+        const char* str = std_str.data();
+        size_t size = std_str.size();
+        std::ios_base::iostate err = ios.goodbit;
+        cpp17_input_iterator<const char*> iter =
+            f.get(cpp17_input_iterator<const char*>(str),
+                  cpp17_input_iterator<const char*>(str+size+1),
+                  ios, err, v);
+        assert(base(iter) == str+size);
+        assert(err == ios.failbit);
+        assert(v == T(-1));
+    }
+}
+
+int main(int, char**)
+{
+    test_neg_one<long>();
+    test_neg_one<long long>();
+    test_neg_one<unsigned short>();
+    test_neg_one<unsigned int>();
+    test_neg_one<unsigned long>();
+    test_neg_one<unsigned long long>();
+
+    test_negate<unsigned short>();
+    test_negate<unsigned int>();
+    test_negate<unsigned long>();
+    test_negate<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/types.pass.cpp
new file mode 100644
index 0000000..ea9ea9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT, class InputIterator = istreambuf_iterator<charT> >
+// class num_get
+//     : public locale::facet
+// {
+// public:
+//     typedef charT char_type;
+//     typedef InputIterator iter_type;
+
+#include <locale>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::num_get<char> >::value), "");
+    static_assert((std::is_base_of<std::locale::facet, std::num_get<wchar_t> >::value), "");
+    static_assert((std::is_same<std::num_get<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::num_get<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::num_get<char>::iter_type, std::istreambuf_iterator<char> >::value), "");
+    static_assert((std::is_same<std::num_get<wchar_t>::iter_type, std::istreambuf_iterator<wchar_t> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/date_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/date_order.pass.cpp
new file mode 100644
index 0000000..eb5af37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/date_order.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// dateorder date_order() const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef std::time_get_byname<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        assert(f.date_order() == std::time_base::mdy);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.date_order() == std::time_base::dmy);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.date_order() == std::time_base::dmy);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.date_order() == std::time_base::ymd);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/date_order_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/date_order_wide.pass.cpp
new file mode 100644
index 0000000..5928c87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/date_order_wide.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// dateorder date_order() const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef std::time_get_byname<wchar_t, cpp17_input_iterator<const wchar_t*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        assert(f.date_order() == std::time_base::mdy);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        assert(f.date_order() == std::time_base::dmy);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        assert(f.date_order() == std::time_base::dmy);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        assert(f.date_order() == std::time_base::ymd);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_date.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_date.pass.cpp
new file mode 100644
index 0000000..acb1e1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_date.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_TIME at the moment
+// XFAIL: netbsd
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_date(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get_byname<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "06/10/2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+#if defined(_WIN32) || defined(TEST_HAS_GLIBC) || defined(_AIX)
+        const char in[] = "10/06/2009";
+#else
+        const char in[] = "10.06.2009";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const char in[] = "10.06.2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+#ifdef TEST_HAS_GLIBC
+        // There's no separator between month and day.
+        const char in[] = "2009\u5e740610";
+#else
+        const char in[] = "2009/06/10";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    // Months must be > 0 and <= 12.
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "00/21/2022";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+#if _LIBCPP_VERSION
+          // libc++ points to the '/' after the month.
+          assert(base(i) == in+2);
+#else
+          // libstdc++ points to the second character.
+          assert(base(i) == in+1);
+#endif
+        // tm is not modified.
+        assert(t.tm_mon == 0);
+        assert(t.tm_mday == 0);
+        assert(t.tm_year == 0);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "13/21/2022";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+#if _LIBCPP_VERSION
+          // libc++ points to the '/' after the month.
+          assert(base(i) == in+2);
+#else
+          // libstdc++ points to the second character.
+          assert(base(i) == in+1);
+#endif
+        assert(base(i) == in+2);
+        assert(t.tm_mon == 0);
+        assert(t.tm_mday == 0);
+        assert(t.tm_year == 0);
+        assert(err == std::ios_base::failbit);
+    }
+    // Leading zero is allowed.
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "03/21/2022";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 2);
+        assert(t.tm_mday == 21);
+        assert(t.tm_year == 122);
+        assert(err == std::ios_base::eofbit);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_date_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_date_wide.pass.cpp
new file mode 100644
index 0000000..3e20193
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_date_wide.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_TIME at the moment
+// XFAIL: netbsd
+
+// XFAIL: no-wide-characters
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_date(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get_byname<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const wchar_t in[] = L"06/10/2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+#if defined(_WIN32) || defined(TEST_HAS_GLIBC) || defined(_AIX)
+        const wchar_t in[] = L"10/06/2009";
+#else
+        const wchar_t in[] = L"10.06.2009";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const wchar_t in[] = L"10.06.2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+#ifdef TEST_HAS_GLIBC
+        // There's no separator between month and day.
+        const wchar_t in[] = L"2009\u5e740610";
+#else
+        const wchar_t in[] = L"2009/06/10";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_monthname.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_monthname.pass.cpp
new file mode 100644
index 0000000..1b19f5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_monthname.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_monthname(iter_type s, iter_type end, ios_base& str,
+//               ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get_byname<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "June";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const char in[] = "juin";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const char in[] = "\xE5\x85\xAD\xE6\x9C\x88";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_monthname_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_monthname_wide.pass.cpp
new file mode 100644
index 0000000..54eff24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_monthname_wide.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+// XFAIL: no-wide-characters
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_monthname(iter_type s, iter_type end, ios_base& str,
+//               ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get_byname<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+typedef std::time_put_byname<wchar_t, wchar_t*> F2;
+class my_facet2
+    : public F2
+{
+public:
+    explicit my_facet2(const std::string& nm, std::size_t refs = 0)
+        : F2(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const wchar_t in[] = L"June";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const wchar_t in[] = L"juin";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const wchar_t in[] = L"\x516D\x6708";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_one.pass.cpp
new file mode 100644
index 0000000..35dba46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_one.pass.cpp
@@ -0,0 +1,241 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_TIME at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type get(iter_type s, iter_type end, ios_base& f,
+//               ios_base::iostate& err, tm *t, char format, char modifier = 0) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get_byname<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+#ifdef _WIN32
+        // On Windows, the "%c" format lacks the leading week day, which
+        // means that t.tm_wday doesn't get set when parsing the string.
+        const char in[] = "12/31/2061 11:55:59 PM";
+#elif defined(TEST_HAS_GLIBC)
+        const char in[] = "Sat 31 Dec 2061 11:55:59 PM";
+#elif defined(_AIX)
+        const char in[] = "Dec 31, 2061 at 11:55:59 PM";
+#else
+        const char in[] = "Sat Dec 31 23:55:59 2061";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+#if !defined(_WIN32) && !defined(_AIX)
+        assert(t.tm_wday == 6);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+#if defined(_WIN32) || defined(TEST_HAS_GLIBC) || defined(_AIX)
+        const char in[] = "11:55:59 PM";
+#else
+        const char in[] = "23:55:59";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+#ifdef _WIN32
+        const char in[] = "31/12/2061 23:55:59";
+#elif defined(TEST_HAS_GLIBC)
+        const char in[] = "sam. 31 d""\xC3\xA9""c. 2061 23:55:59";
+#elif defined(_AIX)
+        const char in[] = "31 d""\xC3\xA9""c. 2061 ""\xC3\xA0"" 23:55:59";
+#else
+        const char in[] = "Sam 31 d""\xC3\xA9""c 23:55:59 2061";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+#if !defined(_WIN32) && !defined(_AIX)
+        assert(t.tm_wday == 6);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const char in[] = "23:55:59";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+#ifdef TEST_HAS_GLIBC
+        const char in[] = "\xD0\xA1\xD0\xB1 31 \xD0\xB4\xD0\xB5\xD0\xBA 2061 23:55:59";
+#elif defined(_WIN32)
+        const char in[] = "31.12.2061 23:55:59";
+#elif defined(_AIX)
+        const char in[] = "31 \xD0\xB4\xD0\xB5\xD0\xBA. 2061 \xD0\xB3., 23:55:59";
+#else
+        const char in[] = "\xD1\x81\xD1\x83\xD0\xB1\xD0\xB1"
+                          "\xD0\xBE\xD1\x82\xD0\xB0"
+                          ", 31 "
+                          "\xD0\xB4\xD0\xB5\xD0\xBA\xD0\xB0"
+                          "\xD0\xB1\xD1\x80\xD1\x8F"
+                          " 2061 "
+                          "\xD0\xB3"
+                          ". 23:55:59";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+#if !defined(_WIN32) && !defined(_AIX)
+        assert(t.tm_wday == 6);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const char in[] = "23:55:59";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+#ifdef TEST_HAS_GLIBC
+        const char in[] = "2061" "\xE5\xB9\xB4" "12" "\xE6\x9C\x88" "31"
+                          "\xE6\x97\xA5" " "
+                          "\xE6\x98\x9F\xE6\x9c\x9F\xE5\x85\xAD"
+                          " 23" "\xE6\x97\xB6" "55" "\xE5\x88\x86" "59"
+                          "\xE7\xA7\x92";
+#elif defined(_WIN32)
+        const char in[] = "2061/12/31 23:55:59";
+#elif defined(_AIX)
+        // The time field is omitted in the definition below because in the
+        // date-time format of locale zh_CN.UTF-8 on AIX, there is %Z before
+        // the time field, i.e, "... %Z %p%I:%M:%S", and its value varies
+        // depending on the date of the year and the location of the machine
+        // where the test case is run.
+        const char in[] = "2061" "\xE5\xB9\xB4" "12" "\xE6\x9C\x88" "31"
+                          "\xE6\x97\xA5";
+#else
+        const char in[] = "\xE5\x85\xAD 12/31 23:55:59 2061";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+#ifndef _AIX
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+#endif
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+#if !defined(_WIN32) && !defined(_AIX)
+        assert(t.tm_wday == 6);
+#endif
+#if !defined(_AIX)
+        assert(err == std::ios_base::eofbit);
+#endif
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+#if defined(_WIN32)
+        const char in[] = "23:55:59";
+#elif defined(_AIX)
+        const char in[] = "\xE4\xB8\x8B\xE5\x8D\x88" "11:55:59";
+#else
+        const char in[] = "23""\xE6\x97\xB6""55""\xE5\x88\x86""59""\xE7\xA7\x92";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+#if defined(_AIX)
+        assert(t.tm_hour == 11);
+#else
+        assert(t.tm_hour == 23);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_one_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_one_wide.pass.cpp
new file mode 100644
index 0000000..f3a09fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_one_wide.pass.cpp
@@ -0,0 +1,212 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_TIME at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// XFAIL: no-wide-characters
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type get(iter_type s, iter_type end, ios_base& f,
+//               ios_base::iostate& err, tm *t, char format, char modifier = 0) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get_byname<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+#ifdef _WIN32
+        // On Windows, the "%c" format lacks the leading week day, which
+        // means that t.tm_wday doesn't get set when parsing the string.
+        const wchar_t in[] = L"12/31/2061 11:55:59 PM";
+#elif defined(TEST_HAS_GLIBC)
+        const wchar_t in[] = L"Sat 31 Dec 2061 11:55:59 PM";
+#elif defined(_AIX)
+        const wchar_t in[] = L"Dec 31, 2061 at 11:55:59 PM";
+#else
+        const wchar_t in[] = L"Sat Dec 31 23:55:59 2061";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+#if !defined(_WIN32) && !defined(_AIX)
+        assert(t.tm_wday == 6);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+#if defined(_WIN32) || defined(TEST_HAS_GLIBC) || defined(_AIX)
+        const wchar_t in[] = L"11:55:59 PM";
+#else
+        const wchar_t in[] = L"23:55:59";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+#ifdef _WIN32
+        const wchar_t in[] = L"31/12/2061 23:55:59";
+#elif defined(TEST_HAS_GLIBC)
+        const wchar_t in[] = L"sam. 31 d" L"\xE9" L"c. 2061 23:55:59";
+#elif defined(_AIX)
+        const wchar_t in[] = L"31 d" L"\xE9" L"c. 2061" L"\xE0" L"23:55:59";
+#else
+        const wchar_t in[] = L"Sam 31 d" L"\xE9" L"c 23:55:59 2061";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+#if !defined(_WIN32) && !defined(_AIX)
+        assert(t.tm_wday == 6);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const wchar_t in[] = L"23:55:59";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(err == std::ios_base::eofbit);
+    }
+#ifdef __APPLE__
+    {
+        const my_facet f("ru_RU", 1);
+        const wchar_t in[] = L"\x441\x443\x431\x431\x43E\x442\x430"
+                          L", 31 "
+                          L"\x434\x435\x43A\x430\x431\x440\x44F"
+                          L" 2061 "
+                          L"\x433"
+                          L". 23:55:59";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+        assert(t.tm_wday == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+#endif
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const wchar_t in[] = L"23:55:59";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(err == std::ios_base::eofbit);
+    }
+#ifdef __APPLE__
+    {
+        const my_facet f("zh_CN", 1);
+        const wchar_t in[] = L"\x516D"
+                          L" 12/31 23:55:59 2061";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+        assert(t.tm_hour == 23);
+        assert(t.tm_mday == 31);
+        assert(t.tm_mon == 11);
+        assert(t.tm_year == 161);
+        assert(t.tm_wday == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+#endif
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+#ifdef _WIN32
+        const wchar_t in[] = L"23:55:59";
+#elif defined(_AIX)
+        const wchar_t in[] = L"\x4E0B\x5348" L"11:55:59";
+#else
+        const wchar_t in[] = L"23" L"\x65F6" L"55" L"\x5206" L"59" L"\x79D2";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_sec == 59);
+        assert(t.tm_min == 55);
+#if defined(_AIX)
+        assert(t.tm_hour == 11);
+#else
+        assert(t.tm_hour == 23);
+#endif
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_time.pass.cpp
new file mode 100644
index 0000000..aa5b0d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_time.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_time(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get_byname<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const char in[] = "13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const char in[] = "13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const char in[] = "13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_time_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_time_wide.pass.cpp
new file mode 100644
index 0000000..c71e65b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_time_wide.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_time(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get_byname<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const wchar_t in[] = L"13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const wchar_t in[] = L"13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const wchar_t in[] = L"13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const wchar_t in[] = L"13:14:15";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_hour == 13);
+        assert(t.tm_min == 14);
+        assert(t.tm_sec == 15);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_weekday.pass.cpp
new file mode 100644
index 0000000..da64b57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_weekday.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_weekday(iter_type s, iter_type end, ios_base& str,
+//             ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get_byname<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "Monday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const char in[] = "Lundi";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const char in[] =
+#ifdef TEST_HAS_GLIBC
+                          "\xD0\x9F" // Upper case
+#else
+                          "\xD0\xBF" // Lower case
+#endif
+                          "\xD0\xBE\xD0\xBD\xD0\xB5"
+                          "\xD0\xB4\xD0\xB5\xD0\xBB\xD1\x8C"
+                          "\xD0\xBD\xD0\xB8\xD0\xBA";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const char in[] = "\xE6\x98\x9F\xE6\x9C\x9F\xE4\xB8\x80";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_weekday_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_weekday_wide.pass.cpp
new file mode 100644
index 0000000..2813c5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_weekday_wide.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type
+// get_weekday(iter_type s, iter_type end, ios_base& str,
+//             ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get_byname<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const wchar_t in[] = L"Monday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const wchar_t in[] = L"Lundi";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+#if defined(TEST_HAS_GLIBC)
+        const wchar_t in[] = L"\x41F\x43E\x43D\x435\x434\x435\x43B\x44C\x43D\x438\x43A";
+#else
+        const wchar_t in[] = L"\x43F\x43E\x43D\x435\x434\x435\x43B\x44C\x43D\x438\x43A";
+#endif
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const wchar_t in[] = L"\x661F\x671F\x4E00";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_year.pass.cpp
new file mode 100644
index 0000000..ec84609
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_year.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type get_year(iter_type s, iter_type end, ios_base& str,
+//                    ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get_byname<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const char in[] = "2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const char in[] = "2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const char in[] = "2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const char in[] = "2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_year_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_year_wide.pass.cpp
new file mode 100644
index 0000000..c608381
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get.byname/get_year_wide.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// <locale>
+
+// class time_get_byname<charT, InputIterator>
+
+// iter_type get_year(iter_type s, iter_type end, ios_base& str,
+//                    ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get_byname<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        const wchar_t in[] = L"2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        const wchar_t in[] = L"2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_ru_RU_UTF_8, 1);
+        const wchar_t in[] = L"2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const my_facet f(LOCALE_zh_CN_UTF_8, 1);
+        const wchar_t in[] = L"2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/ctor.pass.cpp
new file mode 100644
index 0000000..babf72e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// explicit time_get(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::time_get<char, const char*> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/date_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/date_order.pass.cpp
new file mode 100644
index 0000000..a0654d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/date_order.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// dateorder date_order() const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::time_get<char, cpp17_input_iterator<const char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    assert(f.date_order() == std::time_base::mdy);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_date.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_date.pass.cpp
new file mode 100644
index 0000000..a6c7f78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_date.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_date(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "5/5/5";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 4);
+        assert(t.tm_mday == 5);
+        assert(t.tm_year == 105);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_date_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_date_wide.pass.cpp
new file mode 100644
index 0000000..e6a73d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_date_wide.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_date(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const wchar_t in[] = L"5/5/5";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_date(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_mon == 4);
+        assert(t.tm_mday == 5);
+        assert(t.tm_year == 105);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_many.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_many.pass.cpp
new file mode 100644
index 0000000..e8ca74e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_many.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get(iter_type s, iter_type end, ios_base& f, ios_base::iostate& err, tm *t,
+//     const char_type *fmt, const char_type *fmtend) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "2009 May 9, 10:27pm";
+        const char fmt[] = "%Y %b %d, %I:%M%p";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, fmt, fmt+sizeof(fmt)-1);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 109);
+        assert(t.tm_mon == 4);
+        assert(t.tm_mday == 9);
+        assert(t.tm_hour == 22);
+        assert(t.tm_min == 27);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "10:27PM May 9, 2009";
+        const char fmt[] = "%I:%M%p %b %d, %Y";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, fmt, fmt+sizeof(fmt)-1);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 109);
+        assert(t.tm_mon == 4);
+        assert(t.tm_mday == 9);
+        assert(t.tm_hour == 22);
+        assert(t.tm_min == 27);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_monthname.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_monthname.pass.cpp
new file mode 100644
index 0000000..10769f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_monthname.pass.cpp
@@ -0,0 +1,267 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_monthname(iter_type s, iter_type end, ios_base& str,
+//               ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "Jan";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Feb";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Mar";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Apr";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "May";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Jun";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Jul";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Aug";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 7);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Sep";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 8);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Oct";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 9);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Nov";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Dec";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "January";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_mon == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "February";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_mon == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "March";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+5);
+        assert(t.tm_mon == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "April";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+5);
+        assert(t.tm_mon == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "May";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "June";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "July";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_mon == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "August";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_mon == 7);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "September";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+9);
+        assert(t.tm_mon == 8);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "October";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_mon == 9);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "November";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_mon == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "December";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_mon == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Decemper";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+5);
+        assert(t.tm_mon == 0);
+        assert(err == std::ios_base::failbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_monthname_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_monthname_wide.pass.cpp
new file mode 100644
index 0000000..9a872e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_monthname_wide.pass.cpp
@@ -0,0 +1,269 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_monthname(iter_type s, iter_type end, ios_base& str,
+//               ios_base::iostate& err, tm* t) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const wchar_t in[] = L"Jan";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Feb";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Mar";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Apr";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"May";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Jun";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Jul";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Aug";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 7);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Sep";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 8);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Oct";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 9);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Nov";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Dec";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"January";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_mon == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"February";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_mon == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"March";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+5);
+        assert(t.tm_mon == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"April";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+5);
+        assert(t.tm_mon == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"May";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_mon == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"June";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"July";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_mon == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"August";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_mon == 7);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"September";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+9);
+        assert(t.tm_mon == 8);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"October";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_mon == 9);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"November";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_mon == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"December";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_mon == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Decemper";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_monthname(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+5);
+        assert(t.tm_mon == 0);
+        assert(err == std::ios_base::failbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_one.pass.cpp
new file mode 100644
index 0000000..a4ef9bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_one.pass.cpp
@@ -0,0 +1,307 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type get(iter_type s, iter_type end, ios_base& f,
+//               ios_base::iostate& err, tm *t, char format, char modifier = 0) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "mon";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'a');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "wednesdaY";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'A');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_wday == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "June";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'b');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Jul";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'B');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Thu Jun  6 09:49:10 2009";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'c');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_wday == 4);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 6);
+        assert(t.tm_hour == 9);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "11";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'd');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mday == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "2/1/1";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'D');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 1);
+        assert(t.tm_mday == 1);
+        assert(t.tm_year == 101);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "11";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'e');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mday == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "June";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'h');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "19";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'H');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 19);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "12";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'm');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 11);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "59";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'M');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_min == 59);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "\t\n ";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'n');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "09:49:10 PM";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'r');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 21);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "09:49:10 AM";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'r');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 9);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "12:49:10 AM";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'r');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 0);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "12:49:10 PM";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'r');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 12);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "09:49";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'R');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 9);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'S');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 0);
+        assert(t.tm_min == 0);
+        assert(t.tm_sec == 60);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "\t\n ";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 't');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "21:49:10";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'T');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 21);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "3";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'w');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_wday == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "06/06/09";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'x');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_mon == 5);
+        assert(t.tm_mday == 6);
+        assert(t.tm_year == 109);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "21:49:10";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'X');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 21);
+        assert(t.tm_min == 49);
+        assert(t.tm_sec == 10);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "68";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'y');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 168);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "68";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, 'Y');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == -1832);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "%";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get(I(in), I(in+sizeof(in)-1), ios, err, &t, '%');
+        assert(base(i) == in+sizeof(in)-1);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_time.pass.cpp
new file mode 100644
index 0000000..009f94d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_time.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_time(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "0:0:0";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 0);
+        assert(t.tm_min == 0);
+        assert(t.tm_sec == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "23:59:60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_hour == 23);
+        assert(t.tm_min == 59);
+        assert(t.tm_sec == 60);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "24:59:60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+2);
+        assert(t.tm_hour == 0);
+        assert(t.tm_min == 0);
+        assert(t.tm_sec == 0);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const char in[] = "23:60:60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+5);
+//         assert(t.tm_hour == 0);
+//         assert(t.tm_min == 0);
+//         assert(t.tm_sec == 0);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const char in[] = "23:59:61";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+8);
+//         assert(t.tm_hour == 0);
+//         assert(t.tm_min == 0);
+//         assert(t.tm_sec == 0);
+        assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+    }
+    {
+        const char in[] = "2:43:221";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_hour == 2);
+        assert(t.tm_min == 43);
+        assert(t.tm_sec == 22);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const char in[] = "2.43:221";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+1);
+//         assert(t.tm_hour == 0);
+//         assert(t.tm_min == 0);
+//         assert(t.tm_sec == 0);
+        assert(err == std::ios_base::failbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_time_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_time_wide.pass.cpp
new file mode 100644
index 0000000..a7425a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_time_wide.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_time(iter_type s, iter_type end, ios_base& str,
+//          ios_base::iostate& err, tm* t) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const wchar_t in[] = L"0:0:0";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_hour == 0);
+        assert(t.tm_min == 0);
+        assert(t.tm_sec == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"23:59:60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)/sizeof(in[0])-1);
+        assert(t.tm_hour == 23);
+        assert(t.tm_min == 59);
+        assert(t.tm_sec == 60);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"24:59:60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+2);
+        assert(t.tm_hour == 0);
+        assert(t.tm_min == 0);
+        assert(t.tm_sec == 0);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const wchar_t in[] = L"23:60:60";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+5);
+//         assert(t.tm_hour == 0);
+//         assert(t.tm_min == 0);
+//         assert(t.tm_sec == 0);
+        assert(err == std::ios_base::failbit);
+    }
+    {
+        const wchar_t in[] = L"23:59:61";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+8);
+//         assert(t.tm_hour == 0);
+//         assert(t.tm_min == 0);
+//         assert(t.tm_sec == 0);
+        assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+    }
+    {
+        const wchar_t in[] = L"2:43:221";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_hour == 2);
+        assert(t.tm_min == 43);
+        assert(t.tm_sec == 22);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const wchar_t in[] = L"2.43:221";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_time(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+1);
+//         assert(t.tm_hour == 0);
+//         assert(t.tm_min == 0);
+//         assert(t.tm_sec == 0);
+        assert(err == std::ios_base::failbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_weekday.pass.cpp
new file mode 100644
index 0000000..23d53e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_weekday.pass.cpp
@@ -0,0 +1,222 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_weekday(iter_type s, iter_type end, ios_base& str,
+//             ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "Sun";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Suny";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const char in[] = "Sund";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_wday == 0);
+        assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+    }
+    {
+        const char in[] = "sun";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "sunday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Mon";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Mony";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const char in[] = "Mond";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_wday == 0);
+        assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+    }
+    {
+        const char in[] = "mon";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "monday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Tue";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Tuesday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_wday == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Wed";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Wednesday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+9);
+        assert(t.tm_wday == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Thu";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Thursday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_wday == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Fri";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Friday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_wday == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Sat";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "Saturday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_wday == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_weekday_wide.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_weekday_wide.pass.cpp
new file mode 100644
index 0000000..2e63114
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_weekday_wide.pass.cpp
@@ -0,0 +1,224 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type
+// get_weekday(iter_type s, iter_type end, ios_base& str,
+//             ios_base::iostate& err, tm* t) const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const wchar_t*> I;
+
+typedef std::time_get<wchar_t, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const wchar_t in[] = L"Sun";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Suny";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const wchar_t in[] = L"Sund";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_wday == 0);
+        assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+    }
+    {
+        const wchar_t in[] = L"sun";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"sunday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_wday == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Mon";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Mony";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::goodbit);
+    }
+    {
+        const wchar_t in[] = L"Mond";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+4);
+        assert(t.tm_wday == 0);
+        assert(err == (std::ios_base::failbit | std::ios_base::eofbit));
+    }
+    {
+        const wchar_t in[] = L"mon";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"monday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_wday == 1);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Tue";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Tuesday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+7);
+        assert(t.tm_wday == 2);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Wed";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Wednesday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+9);
+        assert(t.tm_wday == 3);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Thu";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Thursday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_wday == 4);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Fri";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Friday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+6);
+        assert(t.tm_wday == 5);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Sat";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+3);
+        assert(t.tm_wday == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const wchar_t in[] = L"Saturday";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_weekday(I(in), I(in+sizeof(in)/sizeof(in[0])-1), ios, err, &t);
+        assert(base(i) == in+8);
+        assert(t.tm_wday == 6);
+        assert(err == std::ios_base::eofbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_year.pass.cpp
new file mode 100644
index 0000000..663f764
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.members/get_year.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_get<charT, InputIterator>
+
+// iter_type get_year(iter_type s, iter_type end, ios_base& str,
+//                    ios_base::iostate& err, tm* t) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef cpp17_input_iterator<const char*> I;
+
+typedef std::time_get<char, I> F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    std::ios ios(0);
+    std::ios_base::iostate err;
+    std::tm t;
+    {
+        const char in[] = "0";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 100);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "00";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 100);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "1";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 101);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "68";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 168);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "69";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 69);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "99";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 99);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "100";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == -1800);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "1900";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 0);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "1968";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 68);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "2000";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-1);
+        assert(t.tm_year == 100);
+        assert(err == std::ios_base::eofbit);
+    }
+    {
+        const char in[] = "2999c";
+        err = std::ios_base::goodbit;
+        t = std::tm();
+        I i = f.get_year(I(in), I(in+sizeof(in)-1), ios, err, &t);
+        assert(base(i) == in+sizeof(in)-2);
+        assert(t.tm_year == 1099);
+        assert(err == std::ios_base::goodbit);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/locale.time.get.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/time_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/time_base.pass.cpp
new file mode 100644
index 0000000..e9a309a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/time_base.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_base
+// {
+// public:
+//     enum dateorder {no_order, dmy, mdy, ymd, ydm};
+// };
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::time_base::dateorder d = std::time_base::no_order;
+    ((void)d); // Prevent unused warning
+    assert(std::time_base::no_order == 0);
+    assert(std::time_base::dmy == 1);
+    assert(std::time_base::mdy == 2);
+    assert(std::time_base::ymd == 3);
+    assert(std::time_base::ydm == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/types.pass.cpp
new file mode 100644
index 0000000..8d88895
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.get/types.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_base
+// {
+// public:
+//     enum dateorder {no_order, dmy, mdy, ymd, ydm};
+// };
+//
+// template <class charT, class InputIterator = istreambuf_iterator<charT> >
+// class time_get
+//     : public locale::facet,
+//       public time_base
+// {
+// public:
+//     typedef charT         char_type;
+//     typedef InputIterator iter_type;
+
+#include <locale>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::time_get<char> >::value), "");
+    static_assert((std::is_base_of<std::locale::facet, std::time_get<wchar_t> >::value), "");
+    static_assert((std::is_base_of<std::time_base, std::time_get<char> >::value), "");
+    static_assert((std::is_base_of<std::time_base, std::time_get<wchar_t> >::value), "");
+    static_assert((std::is_same<std::time_get<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::time_get<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::time_get<char>::iter_type, std::istreambuf_iterator<char> >::value), "");
+    static_assert((std::is_same<std::time_get<wchar_t>::iter_type, std::istreambuf_iterator<wchar_t> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put.byname/put1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put.byname/put1.pass.cpp
new file mode 100644
index 0000000..a04cb2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put.byname/put1.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_TIME at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <locale>
+
+// template <class CharT, class OutputIterator = ostreambuf_iterator<CharT> >
+// class time_put_byname
+//     : public time_put<CharT, OutputIterator>
+// {
+// public:
+//     explicit time_put_byname(const char* nm, size_t refs = 0);
+//     explicit time_put_byname(const string& nm, size_t refs = 0);
+//
+// protected:
+//     ~time_put_byname();
+// };
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+typedef std::time_put_byname<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(const std::string& nm, std::size_t refs = 0)
+        : F(nm, refs) {}
+};
+
+int main(int, char**)
+{
+    char str[200];
+    tm t;
+    t.tm_sec = 6;
+    t.tm_min = 3;
+    t.tm_hour = 13;
+    t.tm_mday = 2;
+    t.tm_mon = 4;
+    t.tm_year = 109;
+    t.tm_wday = 6;
+    t.tm_yday = -1;
+    t.tm_isdst = 1;
+    std::ios ios(0);
+    {
+        const my_facet f(LOCALE_en_US_UTF_8, 1);
+        std::string pat("Today is %A which is abbreviated %a.");
+        cpp17_output_iterator<char*> iter =
+            f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, pat.data(), pat.data() + pat.size());
+        std::string ex(str, base(iter));
+        assert(ex == "Today is Saturday which is abbreviated Sat.");
+    }
+    {
+        const my_facet f(LOCALE_fr_FR_UTF_8, 1);
+        std::string pat("Today is %A which is abbreviated '%a'.");
+        cpp17_output_iterator<char*> iter =
+            f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, pat.data(), pat.data() + pat.size());
+        std::string ex(str, base(iter));
+        assert((ex == "Today is Samedi which is abbreviated 'Sam'.")||
+               (ex == "Today is samedi which is abbreviated 'sam'." )||
+               (ex == "Today is samedi which is abbreviated 'sam.'."));
+    }
+    {
+        const my_facet f(LOCALE_ja_JP_UTF_8, 1);
+        std::string pat("Today is %A which is the %uth day or alternatively %Ou.");
+        cpp17_output_iterator<char*> iter =
+            f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, pat.data(), pat.data() + pat.size());
+        std::string ex(str, base(iter));
+#if defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+        // These platforms have no alternative
+        assert(ex == "Today is \xE5\x9C\x9F\xE6\x9B\x9C\xE6\x97\xA5 which is the 6th day or alternatively 6.");
+#else
+        assert(ex == "Today is \xE5\x9C\x9F\xE6\x9B\x9C\xE6\x97\xA5 which is the 6th day or alternatively \xE5\x85\xAD.");
+#endif
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/ctor.pass.cpp
new file mode 100644
index 0000000..733dcce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_put<charT, OutputIterator>
+
+// explicit time_put(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef std::time_put<char, char*> F;
+
+class my_facet
+    : public F
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+int my_facet::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet);
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+    {
+        my_facet f(1);
+        assert(my_facet::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet::count == 1);
+        }
+        assert(my_facet::count == 1);
+    }
+    assert(my_facet::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.members/put1.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.members/put1.pass.cpp
new file mode 100644
index 0000000..e65b50d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.members/put1.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& str, char_type fill, const tm* t,
+//               const charT* pattern, const charT* pat_end) const;
+
+#include <locale>
+#include <cassert>
+#include <ios>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::time_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    char str[200];
+    tm t;
+    t.tm_sec = 6;
+    t.tm_min = 3;
+    t.tm_hour = 13;
+    t.tm_mday = 2;
+    t.tm_mon = 4;
+    t.tm_year = 109;
+    t.tm_wday = 6;
+    t.tm_yday = -1;
+    t.tm_isdst = 1;
+    std::ios ios(0);
+    {
+        std::string pat("Today is %A which is abbreviated %a.");
+        cpp17_output_iterator<char*> iter =
+            f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, pat.data(), pat.data() + pat.size());
+        std::string ex(str, base(iter));
+        assert(ex == "Today is Saturday which is abbreviated Sat.");
+    }
+    {
+        std::string pat("The number of the month is %Om.");
+        cpp17_output_iterator<char*> iter =
+            f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, pat.data(), pat.data() + pat.size());
+        std::string ex(str, base(iter));
+        assert(ex == "The number of the month is 05.");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.members/put2.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.members/put2.pass.cpp
new file mode 100644
index 0000000..ab5e546
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.members/put2.pass.cpp
@@ -0,0 +1,337 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// class time_put<charT, OutputIterator>
+
+// iter_type put(iter_type s, ios_base& str, char_type fill, const tm* t,
+//               char format, char modifier = 0) const;
+
+#include <locale>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+typedef std::time_put<char, cpp17_output_iterator<char*> > F;
+
+class my_facet
+    : public F
+{
+public:
+    explicit my_facet(std::size_t refs = 0)
+        : F(refs) {}
+};
+
+int main(int, char**)
+{
+    const my_facet f(1);
+    char str[200];
+    tm t = {};
+    t.tm_sec = 6;
+    t.tm_min = 3;
+    t.tm_hour = 13;
+    t.tm_mday = 2;
+    t.tm_mon = 4;
+    t.tm_year = 109;
+    t.tm_wday = 6;
+    t.tm_yday = 121;
+    t.tm_isdst = 1;
+    std::ios ios(0);
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'A');
+        std::string ex(str, base(iter));
+        assert(ex == "Saturday");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'a');
+        std::string ex(str, base(iter));
+        assert(ex == "Sat");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'B');
+        std::string ex(str, base(iter));
+        assert(ex == "May");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'b');
+        std::string ex(str, base(iter));
+        assert(ex == "May");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'C');
+        std::string ex(str, base(iter));
+        assert(ex == "20");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'c');
+        std::string ex(str, base(iter));
+        assert(ex == "Sat May  2 13:03:06 2009");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'D');
+        std::string ex(str, base(iter));
+        assert(ex == "05/02/09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'd');
+        std::string ex(str, base(iter));
+        assert(ex == "02");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'c', 'E');
+        std::string ex(str, base(iter));
+        assert(ex == "Sat May  2 13:03:06 2009");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'C', 'E');
+        std::string ex(str, base(iter));
+        assert(ex == "20");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'x', 'E');
+        std::string ex(str, base(iter));
+        assert(ex == "05/02/09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'X', 'E');
+        std::string ex(str, base(iter));
+        assert(ex == "13:03:06");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'y', 'E');
+        std::string ex(str, base(iter));
+        assert(ex == "09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'Y', 'E');
+        std::string ex(str, base(iter));
+        assert(ex == "2009");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'd', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "02");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'e', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == " 2");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'H', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "13");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'I', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "01");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'm', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "05");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'M', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "03");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'S', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "06");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'u', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "6");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'U', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "17");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'V', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "18");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'w', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "6");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'W', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "17");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'y', 'O');
+        std::string ex(str, base(iter));
+        assert(ex == "09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'e');
+        std::string ex(str, base(iter));
+        assert(ex == " 2");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'F');
+        std::string ex(str, base(iter));
+        assert(ex == "2009-05-02");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'G');
+        std::string ex(str, base(iter));
+        assert(ex == "2009");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'g');
+        std::string ex(str, base(iter));
+        assert(ex == "09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'H');
+        std::string ex(str, base(iter));
+        assert(ex == "13");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'h');
+        std::string ex(str, base(iter));
+        assert(ex == "May");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'I');
+        std::string ex(str, base(iter));
+        assert(ex == "01");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'j');
+        std::string ex(str, base(iter));
+        assert(ex == "122");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'M');
+        std::string ex(str, base(iter));
+        assert(ex == "03");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'm');
+        std::string ex(str, base(iter));
+        assert(ex == "05");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'n');
+        std::string ex(str, base(iter));
+        assert(ex == "\n");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'p');
+        std::string ex(str, base(iter));
+        assert(ex == "PM");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'R');
+        std::string ex(str, base(iter));
+        assert(ex == "13:03");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'r');
+        std::string ex(str, base(iter));
+        assert(ex == "01:03:06 PM");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'S');
+        std::string ex(str, base(iter));
+        assert(ex == "06");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'T');
+        std::string ex(str, base(iter));
+        assert(ex == "13:03:06");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 't');
+        std::string ex(str, base(iter));
+        assert(ex == "\t");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'U');
+        std::string ex(str, base(iter));
+        assert(ex == "17");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'u');
+        std::string ex(str, base(iter));
+        assert(ex == "6");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'V');
+        std::string ex(str, base(iter));
+        assert(ex == "18");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'W');
+        std::string ex(str, base(iter));
+        assert(ex == "17");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'w');
+        std::string ex(str, base(iter));
+        assert(ex == "6");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'X');
+        std::string ex(str, base(iter));
+        assert(ex == "13:03:06");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'x');
+        std::string ex(str, base(iter));
+        assert(ex == "05/02/09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'Y');
+        std::string ex(str, base(iter));
+        assert(ex == "2009");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'y');
+        std::string ex(str, base(iter));
+        assert(ex == "09");
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'Z');
+        std::string ex(str, base(iter));
+//        assert(ex == "EDT");  depends on time zone
+    }
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, 'z');
+        std::string ex(str, base(iter));
+//        assert(ex == "-0400");  depends on time zone
+    }
+#ifndef _WIN32
+    // The Windows strftime() doesn't support the "%+" format. Depending on CRT
+    // configuration of the invalid parameter handler, this can abort the process.
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, '+');
+        std::string ex(str, base(iter));
+//        assert(ex == "Sat May  2 13:03:06 EDT 2009");  depends on time zone
+    }
+#endif
+    {
+        cpp17_output_iterator<char*> iter = f.put(cpp17_output_iterator<char*>(str), ios, '*', &t, '%');
+        std::string ex(str, base(iter));
+        assert(ex == "%");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/locale.time.put.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/types.pass.cpp
new file mode 100644
index 0000000..8a661a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/category.time/locale.time.put/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT, class OutputIterator = ostreambuf_iterator<charT> >
+// class time_put
+//     : public locale::facet
+// {
+// public:
+//     typedef charT          char_type;
+//     typedef OutputIterator iter_type;
+
+#include <locale>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::locale::facet, std::time_put<char> >::value), "");
+    static_assert((std::is_base_of<std::locale::facet, std::time_put<wchar_t> >::value), "");
+    static_assert((std::is_same<std::time_put<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::time_put<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::time_put<char>::iter_type, std::ostreambuf_iterator<char> >::value), "");
+    static_assert((std::is_same<std::time_put<wchar_t>::iter_type, std::ostreambuf_iterator<wchar_t> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/decimal_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/decimal_point.pass.cpp
new file mode 100644
index 0000000..9d074a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/decimal_point.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <locale>
+
+// template <class charT> class numpunct_byname;
+
+// char_type decimal_point() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l("C");
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.decimal_point() == '.');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.decimal_point() == L'.');
+        }
+#endif
+    }
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.decimal_point() == '.');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.decimal_point() == L'.');
+        }
+#endif
+    }
+    {
+        std::locale l(LOCALE_fr_FR_UTF_8);
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.decimal_point() == ',');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.decimal_point() == L',');
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/grouping.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/grouping.pass.cpp
new file mode 100644
index 0000000..2f2bc2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/grouping.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_NUMERIC at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <locale>
+
+// template <class charT> class numpunct_byname;
+
+// string grouping() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l("C");
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.grouping() == "");
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.grouping() == "");
+        }
+#endif
+    }
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+#ifdef _WIN32
+            assert(np.grouping() == "\3");
+#else
+            assert(np.grouping() == "\3\3");
+#endif
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+#ifdef _WIN32
+            assert(np.grouping() == "\3");
+#else
+            assert(np.grouping() == "\3\3");
+#endif
+        }
+#endif
+    }
+    {
+        std::locale l(LOCALE_fr_FR_UTF_8);
+#if defined(TEST_HAS_GLIBC) || defined(_WIN32)
+        const char* const group = "\3";
+#else
+        const char* const group = "\x7f";
+#endif
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.grouping() ==  group);
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.grouping() == group);
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/thousands_sep.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/thousands_sep.pass.cpp
new file mode 100644
index 0000000..d7e1178
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/thousands_sep.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// NetBSD does not support LC_NUMERIC at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <locale>
+
+// template <class charT> class numpunct_byname;
+
+// char_type thousands_sep() const;
+
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale l("C");
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.thousands_sep() == ',');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.thousands_sep() == L',');
+        }
+#endif
+    }
+    {
+        std::locale l(LOCALE_en_US_UTF_8);
+        {
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.thousands_sep() == ',');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.thousands_sep() == L',');
+        }
+#endif
+    }
+    {
+        // The below tests work around GLIBC's use of U202F as LC_NUMERIC thousands_sep.
+        std::locale l(LOCALE_fr_FR_UTF_8);
+        {
+#if defined(_CS_GNU_LIBC_VERSION) || defined(_WIN32)
+            const char sep = ' ';
+#else
+            const char sep = ',';
+#endif
+            typedef char C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.thousands_sep() == sep);
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+#if defined(_CS_GNU_LIBC_VERSION)
+            const wchar_t wsep = glibc_version_less_than("2.27") ? L' ' : L'\u202f';
+#elif defined(_WIN32)
+            const wchar_t wsep = L'\u00A0';
+#else
+            const wchar_t wsep = L',';
+#endif
+            typedef wchar_t C;
+            const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+            assert(np.thousands_sep() == wsep);
+        }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/ctor.pass.cpp
new file mode 100644
index 0000000..28e0d4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/ctor.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class numpunct;
+
+// explicit numpunct(size_t refs = 0);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class C>
+class my_facet
+    : public std::numpunct<C>
+{
+public:
+    static int count;
+
+    explicit my_facet(std::size_t refs = 0)
+        : std::numpunct<C>(refs) {++count;}
+
+    ~my_facet() {--count;}
+};
+
+template <class C> int my_facet<C>::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::locale l(std::locale::classic(), new my_facet<char>);
+        assert(my_facet<char>::count == 1);
+    }
+    assert(my_facet<char>::count == 0);
+    {
+        my_facet<char> f(1);
+        assert(my_facet<char>::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet<char>::count == 1);
+        }
+        assert(my_facet<char>::count == 1);
+    }
+    assert(my_facet<char>::count == 0);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale l(std::locale::classic(), new my_facet<wchar_t>);
+        assert(my_facet<wchar_t>::count == 1);
+    }
+    assert(my_facet<wchar_t>::count == 0);
+    {
+        my_facet<wchar_t> f(1);
+        assert(my_facet<wchar_t>::count == 1);
+        {
+            std::locale l(std::locale::classic(), &f);
+            assert(my_facet<wchar_t>::count == 1);
+        }
+        assert(my_facet<wchar_t>::count == 1);
+    }
+    assert(my_facet<wchar_t>::count == 0);
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/decimal_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/decimal_point.pass.cpp
new file mode 100644
index 0000000..78212c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/decimal_point.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class numpunct;
+
+// char_type decimal_point() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef char C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.decimal_point() == '.');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.decimal_point() == L'.');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/falsename.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/falsename.pass.cpp
new file mode 100644
index 0000000..e3ee165
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/falsename.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class numpunct;
+
+// string_type falsename() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef char C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.falsename() == std::string("false"));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.falsename() == std::wstring(L"false"));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/grouping.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/grouping.pass.cpp
new file mode 100644
index 0000000..6c7f766
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/grouping.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class numpunct;
+
+// string grouping() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef char C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.grouping() == std::string());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.grouping() == std::string());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/thousands_sep.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/thousands_sep.pass.cpp
new file mode 100644
index 0000000..fb5331a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/thousands_sep.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class numpunct;
+
+// char_type thousands_sep() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef char C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.thousands_sep() == ',');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.thousands_sep() == L',');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/truename.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/truename.pass.cpp
new file mode 100644
index 0000000..0f08a67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.members/truename.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> class numpunct;
+
+// string_type truename() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        typedef char C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.truename() == std::string("true"));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t C;
+        const std::numpunct<C>& np = std::use_facet<std::numpunct<C> >(l);
+        assert(np.truename() == std::wstring(L"true"));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.virtuals/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.virtuals/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/facet.numpunct.virtuals/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/types.pass.cpp
new file mode 100644
index 0000000..3837172
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct/types.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT>
+// class numpunct
+//     : public locale::facet
+// {
+// public:
+//     typedef charT char_type;
+//     typedef basic_string<charT> string_type;
+//     static locale::id id;
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l = std::locale::classic();
+    {
+        assert(std::has_facet<std::numpunct<char> >(l));
+        const std::numpunct<char>& f = std::use_facet<std::numpunct<char> >(l);
+        ((void)f); // Prevent unused warning
+        {
+            (void)std::numpunct<char>::id;
+        }
+        static_assert((std::is_same<std::numpunct<char>::char_type, char>::value), "");
+        static_assert((std::is_same<std::numpunct<char>::string_type, std::string>::value), "");
+        static_assert((std::is_base_of<std::locale::facet, std::numpunct<char> >::value), "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        assert(std::has_facet<std::numpunct<wchar_t> >(l));
+        const std::numpunct<wchar_t>& f = std::use_facet<std::numpunct<wchar_t> >(l);
+        ((void)f); // Prevent unused warning
+        {
+            (void)std::numpunct<wchar_t>::id;
+        }
+        static_assert((std::is_same<std::numpunct<wchar_t>::char_type, wchar_t>::value), "");
+        static_assert((std::is_same<std::numpunct<wchar_t>::string_type, std::wstring>::value), "");
+        static_assert((std::is_base_of<std::locale::facet, std::numpunct<wchar_t> >::value), "");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facets.examples/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facets.examples/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.categories/facets.examples/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_mode.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_mode.pass.cpp
new file mode 100644
index 0000000..b7020ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_mode.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// enum codecvt_mode
+// {
+//     consume_header = 4,
+//     generate_header = 2,
+//     little_endian = 1
+// };
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::consume_header == 4);
+    assert(std::generate_header == 2);
+    assert(std::little_endian == 1);
+    std::codecvt_mode e = std::consume_header;
+    assert(e == 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16.pass.cpp
new file mode 100644
index 0000000..c38f11d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// XFAIL: no-wide-characters
+
+// Not a portable test
+
+#include <codecvt>
+#include <cstdlib>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        typedef std::codecvt_utf16<wchar_t> C;
+        C c;
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+    }
+    {
+        typedef std::codecvt_utf16<wchar_t> C;
+        std::locale loc(std::locale::classic(), new C);
+        assert(globalMemCounter.checkOutstandingNewNotEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_always_noconv.pass.cpp
new file mode 100644
index 0000000..f91706c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_always_noconv.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// bool always_noconv() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf16<wchar_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+#endif
+    {
+        typedef std::codecvt_utf16<char16_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_encoding.pass.cpp
new file mode 100644
index 0000000..12bfa09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_encoding.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int encoding() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf16<wchar_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+#endif
+    {
+        typedef std::codecvt_utf16<char16_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_in.pass.cpp
new file mode 100644
index 0000000..8d4f48e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_in.pass.cpp
@@ -0,0 +1,744 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     in(stateT& state,
+//        const externT* from, const externT* from_end, const externT*& from_next,
+//        internT* to, internT* to_end, internT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::codecvt_utf16<char32_t> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+4);
+        assert(w == 0x40003);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x1000> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x10ffff, std::consume_header> C;
+        C c;
+        char32_t w = 0;
+        char n[6] = {char(0xFE), char(0xFF), char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+6);
+        assert(w == 0x40003);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x10ffff, std::little_endian> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+4);
+        assert(w == 0x40003);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x1000, std::little_endian> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x10ffff,
+                                   std::codecvt_mode(std::consume_header | std::little_endian)> C;
+
+        C c;
+        char32_t w = 0;
+        char n[6] = {char(0xFF), char(0xFE), char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+6);
+        assert(w == 0x40003);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+4);
+        assert(w == 0x40003);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x1000> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x10ffff, std::consume_header> C;
+        C c;
+        char32_t w = 0;
+        char n[6] = {char(0xFE), char(0xFF), char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+6);
+        assert(w == 0x40003);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x10ffff, std::little_endian> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+4);
+        assert(w == 0x40003);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x1000, std::little_endian> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t, 0x10ffff, std::codecvt_mode(
+                                                         std::consume_header |
+                                                         std::little_endian)> C;
+        C c;
+        char32_t w = 0;
+        char n[6] = {char(0xFF), char(0xFE), char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+6);
+        assert(w == 0x40003);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+
+    {
+        typedef std::codecvt_utf16<char16_t> C;
+        C c;
+        char16_t w = 0;
+        char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char16_t, 0x1000> C;
+        C c;
+        char16_t w = 0;
+        char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char16_t, 0x10ffff, std::consume_header> C;
+        C c;
+        char16_t w = 0;
+        char n[6] = {char(0xFE), char(0xFF), char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n+2);
+        assert(w == 0);
+
+        n[0] = char(0x10);
+        n[1] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[0] = char(0x04);
+        n[1] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x00);
+        n[1] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char16_t, 0x10ffff, std::little_endian> C;
+        C c;
+        char16_t w = 0;
+        char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char16_t, 0x1000, std::little_endian> C;
+        C c;
+        char16_t w = 0;
+        char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf16<char16_t, 0x10ffff, std::codecvt_mode(
+                                                         std::consume_header |
+                                                         std::little_endian)> C;
+        C c;
+        char16_t w = 0;
+        char n[6] = {char(0xFF), char(0xFE), char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n+2);
+        assert(w == 0);
+
+        n[1] = char(0x10);
+        n[0] = char(0x05);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x1005);
+
+        n[1] = char(0x04);
+        n[0] = char(0x53);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[1] = char(0x00);
+        n[0] = char(0x56);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x56);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_length.pass.cpp
new file mode 100644
index 0000000..53172e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_length.pass.cpp
@@ -0,0 +1,331 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int length(stateT& state, const externT* from, const externT* from_end,
+//            size_t max) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf16<char16_t> C;
+    C c;
+    char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 0);
+
+    n[0] = char(0x10);
+    n[1] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x04);
+    n[1] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x00);
+    n[1] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char16_t, 0x1000> C;
+    C c;
+    char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 0);
+
+    n[0] = char(0x10);
+    n[1] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 0);
+
+    n[0] = char(0x04);
+    n[1] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x00);
+    n[1] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char16_t, 0x10ffff, std::consume_header> C;
+    C c;
+    char n[6] = {char(0xFE), char(0xFF), char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 6, 2);
+    assert(r == 2);
+
+    n[0] = char(0x10);
+    n[1] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x04);
+    n[1] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x00);
+    n[1] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char16_t, 0x10ffff, std::little_endian> C;
+    C c;
+    char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 0);
+
+    n[1] = char(0x10);
+    n[0] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x04);
+    n[0] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x00);
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char16_t, 0x1000, std::little_endian> C;
+    C c;
+    char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 0);
+
+    n[1] = char(0x10);
+    n[0] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 0);
+
+    n[1] = char(0x04);
+    n[0] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x00);
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char16_t, 0x10ffff, std::codecvt_mode(std::consume_header | std::little_endian)> C;
+    C c;
+    char n[6] = {char(0xFF), char(0xFE), char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 6, 2);
+    assert(r == 2);
+
+    n[1] = char(0x10);
+    n[0] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x04);
+    n[0] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x00);
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf16<char32_t> C;
+    C c;
+    char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 4);
+
+    n[0] = char(0x10);
+    n[1] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x04);
+    n[1] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x00);
+    n[1] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char32_t, 0x1000> C;
+    C c;
+    char n[4] = {char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 0);
+
+    n[0] = char(0x10);
+    n[1] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 0);
+
+    n[0] = char(0x04);
+    n[1] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x00);
+    n[1] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char32_t, 0x10ffff, std::consume_header> C;
+    C c;
+    char n[6] = {char(0xFE), char(0xFF), char(0xD8), char(0xC0), char(0xDC), char(0x03)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 6, 2);
+    assert(r == 6);
+
+    n[0] = char(0x10);
+    n[1] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x04);
+    n[1] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[0] = char(0x00);
+    n[1] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char32_t, 0x10ffff, std::little_endian> C;
+    C c;
+    char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 4);
+
+    n[1] = char(0x10);
+    n[0] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x04);
+    n[0] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x00);
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char32_t, 0x1000, std::little_endian> C;
+    C c;
+    char n[4] = {char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 2);
+    assert(r == 0);
+
+    n[1] = char(0x10);
+    n[0] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 0);
+
+    n[1] = char(0x04);
+    n[0] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x00);
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<char32_t, 0x10ffff, std::codecvt_mode(std::consume_header | std::little_endian)> C;
+    C c;
+    char n[6] = {char(0xFF), char(0xFE), char(0xC0), char(0xD8), char(0x03), char(0xDC)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 6, 2);
+    assert(r == 6);
+
+    n[1] = char(0x10);
+    n[0] = char(0x05);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x04);
+    n[0] = char(0x53);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+
+    n[1] = char(0x00);
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 2, 2);
+    assert(r == 2);
+  }
+}
+
+int main(int, char**) {
+  TestHelper<wchar_t>::test();
+  TestHelper<char16_t>::test();
+  TestHelper<char32_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_max_length.pass.cpp
new file mode 100644
index 0000000..ac3daf4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_max_length.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int max_length() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf16<CharT> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 2);
+  }
+  {
+    typedef std::codecvt_utf16<CharT, 0xFFFFFFFF, std::consume_header> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 4);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf16<CharT> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 4);
+  }
+  {
+    typedef std::codecvt_utf16<CharT, 0xFFFFFFFF, std::consume_header> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 6);
+  }
+}
+
+int main(int, char**) {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  TestHelper<wchar_t>::test();
+#endif
+  TestHelper<char16_t>::test();
+  TestHelper<char32_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_out.pass.cpp
new file mode 100644
index 0000000..2a6936a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_out.pass.cpp
@@ -0,0 +1,360 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+// out(stateT& state,
+//     const internT* from, const internT* from_end, const internT*& from_next,
+//     externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  // Nothing to do, the conversion in unsupported
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf16<CharT> C;
+    C c;
+    CharT w = 0x40003;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xD8));
+    assert(n[1] == char(0xC0));
+    assert(n[2] == char(0xDC));
+    assert(n[3] == char(0x03));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0x10));
+    assert(n[1] == char(0x05));
+    assert(n[2] == char(0xDC));
+    assert(n[3] == char(0x03));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0x04));
+    assert(n[1] == char(0x53));
+    assert(n[2] == char(0xDC));
+    assert(n[3] == char(0x03));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0x00));
+    assert(n[1] == char(0x56));
+    assert(n[2] == char(0xDC));
+    assert(n[3] == char(0x03));
+  }
+  {
+    typedef std::codecvt_utf16<CharT, 0x1000> C;
+    C c;
+    CharT w = 0x40003;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[0] == char(0));
+    assert(n[1] == char(0));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[0] == char(0));
+    assert(n[1] == char(0));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0x04));
+    assert(n[1] == char(0x53));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0x00));
+    assert(n[1] == char(0x56));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+  }
+  {
+    typedef std::codecvt_utf16<CharT, 0x10ffff, std::generate_header> C;
+    C c;
+    CharT w = 0x40003;
+    char n[6] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 6);
+    assert(n[0] == char(0xFE));
+    assert(n[1] == char(0xFF));
+    assert(n[2] == char(0xD8));
+    assert(n[3] == char(0xC0));
+    assert(n[4] == char(0xDC));
+    assert(n[5] == char(0x03));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xFE));
+    assert(n[1] == char(0xFF));
+    assert(n[2] == char(0x10));
+    assert(n[3] == char(0x05));
+    assert(n[4] == char(0xDC));
+    assert(n[5] == char(0x03));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xFE));
+    assert(n[1] == char(0xFF));
+    assert(n[2] == char(0x04));
+    assert(n[3] == char(0x53));
+    assert(n[4] == char(0xDC));
+    assert(n[5] == char(0x03));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xFE));
+    assert(n[1] == char(0xFF));
+    assert(n[2] == char(0x00));
+    assert(n[3] == char(0x56));
+    assert(n[4] == char(0xDC));
+    assert(n[5] == char(0x03));
+  }
+
+  {
+    typedef std::codecvt_utf16<CharT, 0x10FFFF, std::little_endian> C;
+    C c;
+    CharT w = 0x40003;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[1] == char(0xD8));
+    assert(n[0] == char(0xC0));
+    assert(n[3] == char(0xDC));
+    assert(n[2] == char(0x03));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[1] == char(0x10));
+    assert(n[0] == char(0x05));
+    assert(n[3] == char(0xDC));
+    assert(n[2] == char(0x03));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[1] == char(0x04));
+    assert(n[0] == char(0x53));
+    assert(n[3] == char(0xDC));
+    assert(n[2] == char(0x03));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[1] == char(0x00));
+    assert(n[0] == char(0x56));
+    assert(n[3] == char(0xDC));
+    assert(n[2] == char(0x03));
+  }
+  {
+    typedef std::codecvt_utf16<CharT, 0x1000, std::little_endian> C;
+    C c;
+    CharT w = 0x40003;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[1] == char(0));
+    assert(n[0] == char(0));
+    assert(n[3] == char(0));
+    assert(n[2] == char(0));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[1] == char(0));
+    assert(n[0] == char(0));
+    assert(n[3] == char(0));
+    assert(n[2] == char(0));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[1] == char(0x04));
+    assert(n[0] == char(0x53));
+    assert(n[3] == char(0));
+    assert(n[2] == char(0));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[1] == char(0x00));
+    assert(n[0] == char(0x56));
+    assert(n[3] == char(0));
+    assert(n[2] == char(0));
+  }
+  {
+    typedef std::codecvt_utf16<CharT, 0x10ffff,
+                               std::codecvt_mode(std::generate_header |
+                                                 std::little_endian)>
+        C;
+    C c;
+    CharT w = 0x40003;
+    char n[6] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 6);
+    assert(n[1] == char(0xFE));
+    assert(n[0] == char(0xFF));
+    assert(n[3] == char(0xD8));
+    assert(n[2] == char(0xC0));
+    assert(n[5] == char(0xDC));
+    assert(n[4] == char(0x03));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[1] == char(0xFE));
+    assert(n[0] == char(0xFF));
+    assert(n[3] == char(0x10));
+    assert(n[2] == char(0x05));
+    assert(n[5] == char(0xDC));
+    assert(n[4] == char(0x03));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[1] == char(0xFE));
+    assert(n[0] == char(0xFF));
+    assert(n[3] == char(0x04));
+    assert(n[2] == char(0x53));
+    assert(n[5] == char(0xDC));
+    assert(n[4] == char(0x03));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 6, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[1] == char(0xFE));
+    assert(n[0] == char(0xFF));
+    assert(n[3] == char(0x00));
+    assert(n[2] == char(0x56));
+    assert(n[5] == char(0xDC));
+    assert(n[4] == char(0x03));
+  }
+}
+
+int main(int, char**) {
+  TestHelper<char32_t>::test();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  TestHelper<wchar_t>::test();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_unshift.pass.cpp
new file mode 100644
index 0000000..55cbf5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf16_unshift.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     unshift(stateT& state,
+//             externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf16<wchar_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+#endif
+    {
+        typedef std::codecvt_utf16<char16_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8.pass.cpp
new file mode 100644
index 0000000..1f06de2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// XFAIL: no-wide-characters
+
+// Not a portable test
+
+#include <codecvt>
+#include <cstdlib>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        typedef std::codecvt_utf8<wchar_t> C;
+        C c;
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+    }
+    {
+        typedef std::codecvt_utf8<wchar_t> C;
+        std::locale loc(std::locale::classic(), new C);
+        assert(globalMemCounter.checkOutstandingNewNotEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_always_noconv.pass.cpp
new file mode 100644
index 0000000..f25c8e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_always_noconv.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// bool always_noconv() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8<wchar_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+#endif
+    {
+        typedef std::codecvt_utf8<char16_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_encoding.pass.cpp
new file mode 100644
index 0000000..55c1c5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_encoding.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int encoding() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8<wchar_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+#endif
+    {
+        typedef std::codecvt_utf8<char16_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_in.pass.cpp
new file mode 100644
index 0000000..9abd086
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_in.pass.cpp
@@ -0,0 +1,365 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     in(stateT& state,
+//        const externT* from, const externT* from_end, const externT*& from_next,
+//        internT* to, internT* to_end, internT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::codecvt_utf8<char32_t> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+4);
+        assert(w == 0x40003);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+3);
+        assert(w == 0x1005);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t, 0x1000> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t, 0xFFFFFFFF, std::consume_header> C;
+        C c;
+        char32_t w = 0;
+        char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+7, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+7);
+        assert(w == 0x40003);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+3);
+        assert(w == 0x1005);
+
+        n[0] = char(0xEF);
+        n[1] = char(0xBB);
+        n[2] = char(0xBF);
+        n[3] = char(0xD1);
+        n[4] = char(0x93);
+        r = c.in(m, n, n+5, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+5);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+4);
+        assert(w == 0x40003);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+3);
+        assert(w == 0x1005);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t, 0x1000> C;
+        C c;
+        char32_t w = 0;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+4, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t, 0xFFFFFFFF, std::consume_header> C;
+        C c;
+        char32_t w = 0;
+        char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+        char32_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+7, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+7);
+        assert(w == 0x40003);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+3);
+        assert(w == 0x1005);
+
+        n[0] = char(0xEF);
+        n[1] = char(0xBB);
+        n[2] = char(0xBF);
+        n[3] = char(0xD1);
+        n[4] = char(0x93);
+        r = c.in(m, n, n+5, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+5);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char16_t> C;
+        C c;
+        char16_t w = 0;
+        char n[3] = {char(0xE1), char(0x80), char(0x85)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+3);
+        assert(w == 0x1005);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char16_t, 0x1000> C;
+        C c;
+        char16_t w = 0;
+        char n[3] = {char(0xE1), char(0x80), char(0x85)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+3, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::error);
+        assert(wp == &w);
+        assert(np == n);
+        assert(w == 0);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+    {
+        typedef std::codecvt_utf8<char16_t, 0xFFFFFFFF, std::consume_header> C;
+        C c;
+        char16_t w = 0;
+        char n[6] = {char(0xEF), char(0xBB), char(0xBF), char(0xE1), char(0x80), char(0x85)};
+        char16_t* wp = nullptr;
+        std::mbstate_t m;
+        const char* np = nullptr;
+        std::codecvt_base::result r = c.in(m, n, n+6, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+6);
+        assert(w == 0x1005);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.in(m, n, n+2, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+2);
+        assert(w == 0x453);
+
+        w = 0x56;
+        n[0] = char(0x56);
+        r = c.in(m, n, n+1, np, &w, &w+1, wp);
+        assert(r == std::codecvt_base::ok);
+        assert(wp == &w+1);
+        assert(np == n+1);
+        assert(w == 0x56);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_length.pass.cpp
new file mode 100644
index 0000000..37cc10a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_length.pass.cpp
@@ -0,0 +1,201 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int length(stateT& state, const externT* from, const externT* from_end,
+//            size_t max) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf8<CharT> C;
+    C c;
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 1);
+    assert(r == 0);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.length(m, n, n + 3, 2);
+    assert(r == 3);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.length(m, n, n + 2, 3);
+    assert(r == 2);
+
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 1, 3);
+    assert(r == 1);
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0x1000> C;
+    C c;
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 1);
+    assert(r == 0);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.length(m, n, n + 3, 2);
+    assert(r == 0);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.length(m, n, n + 2, 3);
+    assert(r == 2);
+
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 1, 3);
+    assert(r == 1);
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0xFFFFFFFF, std::consume_header> C;
+    C c;
+    char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 7, 1);
+    assert(r == 3);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.length(m, n, n + 3, 2);
+    assert(r == 3);
+
+    n[0] = char(0xEF);
+    n[1] = char(0xBB);
+    n[2] = char(0xBF);
+    n[3] = char(0xD1);
+    n[4] = char(0x93);
+    r = c.length(m, n, n + 5, 3);
+    assert(r == 5);
+
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 1, 3);
+    assert(r == 1);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf8<CharT> C;
+    C c;
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 1);
+    assert(r == 4);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.length(m, n, n + 3, 2);
+    assert(r == 3);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.length(m, n, n + 2, 3);
+    assert(r == 2);
+
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 1, 3);
+    assert(r == 1);
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0x1000> C;
+    C c;
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 4, 1);
+    assert(r == 0);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.length(m, n, n + 3, 2);
+    assert(r == 0);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.length(m, n, n + 2, 3);
+    assert(r == 2);
+
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 1, 3);
+    assert(r == 1);
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0xFFFFFFFF, std::consume_header> C;
+    C c;
+    char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+    std::mbstate_t m;
+    int r = c.length(m, n, n + 7, 1);
+    assert(r == 7);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.length(m, n, n + 3, 2);
+    assert(r == 3);
+
+    n[0] = char(0xEF);
+    n[1] = char(0xBB);
+    n[2] = char(0xBF);
+    n[3] = char(0xD1);
+    n[4] = char(0x93);
+    r = c.length(m, n, n + 5, 3);
+    assert(r == 5);
+
+    n[0] = char(0x56);
+    r = c.length(m, n, n + 1, 3);
+    assert(r == 1);
+  }
+}
+
+int main(int, char**) {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  TestHelper<wchar_t>::test();
+#endif
+  TestHelper<char32_t>::test();
+  TestHelper<char16_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_max_length.pass.cpp
new file mode 100644
index 0000000..6279dce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_max_length.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int max_length() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf8<CharT> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 3);
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0xFFFFFFFF, std::consume_header> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 6);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf8<CharT> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 4);
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0xFFFFFFFF, std::consume_header> C;
+    C c;
+    int r = c.max_length();
+    assert(r == 7);
+  }
+}
+
+int main(int, char**) {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  TestHelper<wchar_t>::test();
+#endif
+  TestHelper<char16_t>::test();
+  TestHelper<char32_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_out.pass.cpp
new file mode 100644
index 0000000..7d124c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_out.pass.cpp
@@ -0,0 +1,333 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+// out(stateT& state,
+//     const internT* from, const internT* from_end, const internT*& from_next,
+//     externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf8<CharT> C;
+    C c;
+    CharT w = 0x1005;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 3);
+    assert(n[0] == char(0xE1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x85));
+    assert(n[3] == char(0));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0x85));
+    assert(n[3] == char(0));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0x85));
+    assert(n[3] == char(0));
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0x1000> C;
+    C c;
+    CharT w = 0x1005;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[0] == char(0));
+    assert(n[1] == char(0));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0xFFFFFFFF, std::generate_header> C;
+    C c;
+    CharT w = 0x1005;
+    char n[7] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 6);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xE1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x85));
+    assert(n[6] == char(0));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 5);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xD1));
+    assert(n[4] == char(0x93));
+    assert(n[5] == char(0x85));
+    assert(n[6] == char(0));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0x56));
+    assert(n[4] == char(0x93));
+    assert(n[5] == char(0x85));
+    assert(n[6] == char(0));
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf8<CharT> C;
+    C c;
+    CharT w = 0x40003;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xF1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x80));
+    assert(n[3] == char(0x83));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 3);
+    assert(n[0] == char(0xE1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x85));
+    assert(n[3] == char(0x83));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0x85));
+    assert(n[3] == char(0x83));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0x85));
+    assert(n[3] == char(0x83));
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0x1000> C;
+    C c;
+    CharT w = 0x40003;
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[0] == char(0));
+    assert(n[1] == char(0));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == &w);
+    assert(np == n);
+    assert(n[0] == char(0));
+    assert(n[1] == char(0));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+    assert(n[1] == char(0x93));
+    assert(n[2] == char(0));
+    assert(n[3] == char(0));
+  }
+  {
+    typedef std::codecvt_utf8<CharT, 0xFFFFFFFF, std::generate_header> C;
+    C c;
+    CharT w = 0x40003;
+    char n[7] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 7);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xF1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x80));
+    assert(n[6] == char(0x83));
+
+    w = 0x1005;
+    r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 6);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xE1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x85));
+    assert(n[6] == char(0x83));
+
+    w = 0x453;
+    r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 5);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xD1));
+    assert(n[4] == char(0x93));
+    assert(n[5] == char(0x85));
+    assert(n[6] == char(0x83));
+
+    w = 0x56;
+    r = c.out(m, &w, &w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == &w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0x56));
+    assert(n[4] == char(0x93));
+    assert(n[5] == char(0x85));
+    assert(n[6] == char(0x83));
+  }
+}
+
+int main(int, char**) {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  TestHelper<wchar_t>::test();
+#endif
+  TestHelper<char32_t>::test();
+  TestHelper<char16_t>::test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_unshift.pass.cpp
new file mode 100644
index 0000000..9ab9629
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_unshift.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     unshift(stateT& state,
+//             externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8<wchar_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+#endif
+    {
+        typedef std::codecvt_utf8<char16_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_always_noconv.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_always_noconv.pass.cpp
new file mode 100644
index 0000000..97d7ef2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_always_noconv.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// bool always_noconv() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+#endif
+    {
+        typedef std::codecvt_utf8_utf16<char16_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t> C;
+        C c;
+        bool r = c.always_noconv();
+        assert(r == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_encoding.pass.cpp
new file mode 100644
index 0000000..f0514b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_encoding.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int encoding() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+#endif
+    {
+        typedef std::codecvt_utf8_utf16<char16_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_in.pass.cpp
new file mode 100644
index 0000000..d7776b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_in.pass.cpp
@@ -0,0 +1,249 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     in(stateT& state,
+//        const externT* from, const externT* from_end, const externT*& from_next,
+//        internT* to, internT* to_end, internT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x1000> C;
+    C c;
+    CharT w[2] = {0};
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    CharT* wp = nullptr;
+    std::mbstate_t m;
+    const char* np = nullptr;
+    std::codecvt_base::result r = c.in(m, n, n + 4, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.in(m, n, n + 3, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.in(m, n, n + 2, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(w[0] == 0x0453);
+
+    n[0] = char(0x56);
+    r = c.in(m, n, n + 1, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(w[0] == 0x0056);
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x10ffff, std::consume_header> C;
+    C c;
+    CharT w[2] = {0};
+    char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1),
+                 char(0x80), char(0x80), char(0x83)};
+    CharT* wp = nullptr;
+    std::mbstate_t m;
+    const char* np = nullptr;
+    std::codecvt_base::result r = c.in(m, n, n + 7, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 7);
+    assert(w[0] == 0xD8C0);
+    assert(w[1] == 0xDC03);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.in(m, n, n + 3, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 3);
+    assert(w[0] == 0x1005);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.in(m, n, n + 2, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(w[0] == 0x0453);
+
+    n[0] = char(0x56);
+    r = c.in(m, n, n + 1, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(w[0] == 0x0056);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf8_utf16<CharT> C;
+    C c;
+    CharT w[2] = {0};
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    CharT* wp = nullptr;
+    std::mbstate_t m;
+    const char* np = nullptr;
+    std::codecvt_base::result r = c.in(m, n, n + 4, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 4);
+    assert(w[0] == 0xD8C0);
+    assert(w[1] == 0xDC03);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.in(m, n, n + 3, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 3);
+    assert(w[0] == 0x1005);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.in(m, n, n + 2, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(w[0] == 0x0453);
+
+    n[0] = char(0x56);
+    r = c.in(m, n, n + 1, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(w[0] == 0x0056);
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x1000> C;
+    C c;
+    CharT w[2] = {0};
+    char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+    CharT* wp = nullptr;
+    std::mbstate_t m;
+    const char* np = nullptr;
+    std::codecvt_base::result r = c.in(m, n, n + 4, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.in(m, n, n + 3, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.in(m, n, n + 2, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(w[0] == 0x0453);
+
+    n[0] = char(0x56);
+    r = c.in(m, n, n + 1, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(w[0] == 0x0056);
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x10ffff, std::consume_header> C;
+    C c;
+    CharT w[2] = {0};
+    char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1),
+                 char(0x80), char(0x80), char(0x83)};
+    CharT* wp = nullptr;
+    std::mbstate_t m;
+    const char* np = nullptr;
+    std::codecvt_base::result r = c.in(m, n, n + 7, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 7);
+    assert(w[0] == 0xD8C0);
+    assert(w[1] == 0xDC03);
+
+    n[0] = char(0xE1);
+    n[1] = char(0x80);
+    n[2] = char(0x85);
+    r = c.in(m, n, n + 3, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 3);
+    assert(w[0] == 0x1005);
+
+    n[0] = char(0xD1);
+    n[1] = char(0x93);
+    r = c.in(m, n, n + 2, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(w[0] == 0x0453);
+
+    n[0] = char(0x56);
+    r = c.in(m, n, n + 1, np, w, w + 2, wp);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(w[0] == 0x0056);
+  }
+}
+
+int main(int, char**) {
+#if !defined(_WIN32) && !defined(TEST_HAS_NO_WIDE_CHARACTERS)
+  TestHelper<wchar_t>::test();
+#endif
+  TestHelper<char32_t>::test();
+  TestHelper<char16_t>::test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_length.pass.cpp
new file mode 100644
index 0000000..03f8137
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_length.pass.cpp
@@ -0,0 +1,242 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int length(stateT& state, const externT* from, const externT* from_end,
+//            size_t max) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t> C;
+        C c;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+4, 2);
+        assert(r == 4);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 3);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t, 0x1000> C;
+        C c;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+4, 2);
+        assert(r == 0);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 0);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t, 0x10ffff, std::consume_header> C;
+        C c;
+        char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+7, 2);
+        assert(r == 7);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 3);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<char32_t> C;
+        C c;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+4, 2);
+        assert(r == 4);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 3);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t, 0x1000> C;
+        C c;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+4, 2);
+        assert(r == 0);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 0);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t, 0x10ffff, std::consume_header> C;
+        C c;
+        char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+7, 2);
+        assert(r == 7);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 3);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char16_t> C;
+        C c;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+4, 2);
+        assert(r == 4);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 3);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char16_t, 0x1000> C;
+        C c;
+        char n[4] = {char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+4, 2);
+        assert(r == 0);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 0);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char16_t, 0x10ffff, std::consume_header> C;
+        C c;
+        char n[7] = {char(0xEF), char(0xBB), char(0xBF), char(0xF1), char(0x80), char(0x80), char(0x83)};
+        std::mbstate_t m;
+        int r = c.length(m, n, n+7, 2);
+        assert(r == 7);
+
+        n[0] = char(0xE1);
+        n[1] = char(0x80);
+        n[2] = char(0x85);
+        r = c.length(m, n, n+3, 2);
+        assert(r == 3);
+
+        n[0] = char(0xD1);
+        n[1] = char(0x93);
+        r = c.length(m, n, n+2, 2);
+        assert(r == 2);
+
+        n[0] = char(0x56);
+        r = c.length(m, n, n+1, 2);
+        assert(r == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_max_length.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_max_length.pass.cpp
new file mode 100644
index 0000000..c59e8e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_max_length.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int max_length() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t> C;
+        C c;
+        int r = c.max_length();
+        assert(r == 4);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t, 0xFFFFFFFF, std::consume_header> C;
+        C c;
+        int r = c.max_length();
+        assert(r == 7);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<char16_t> C;
+        C c;
+        int r = c.max_length();
+        assert(r == 4);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char16_t, 0xFFFFFFFF, std::consume_header> C;
+        C c;
+        int r = c.max_length();
+        assert(r == 7);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t> C;
+        C c;
+        int r = c.max_length();
+        assert(r == 4);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t, 0xFFFFFFFF, std::consume_header> C;
+        C c;
+        int r = c.max_length();
+        assert(r == 7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_out.pass.cpp
new file mode 100644
index 0000000..c208dc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_out.pass.cpp
@@ -0,0 +1,314 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+// out(stateT& state,
+//     const internT* from, const internT* from_end, const internT*& from_next,
+//     externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  {
+    typedef std::codecvt_utf8_utf16<CharT> C;
+    C c;
+    CharT w[2] = {0xD8C0, 0xDC03};
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, w, w + 2, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 4);
+    assert(n[0] == char(0xF1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x80));
+    assert(n[3] == char(0x83));
+
+    w[0] = 0x1005;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 3);
+    assert(n[0] == char(0xE1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x85));
+
+    w[0] = 0x453;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+
+    w[0] = 0x56;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x1000> C;
+    C c;
+    CharT w[2] = {0xD8C0, 0xDC03};
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, w, w + 2, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    w[0] = 0x1005;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    w[0] = 0x453;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+
+    w[0] = 0x56;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x10ffff, std::generate_header> C;
+    C c;
+    CharT w[2] = {0xD8C0, 0xDC03};
+    char n[7] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, w, w + 2, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 7);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xF1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x80));
+    assert(n[6] == char(0x83));
+
+    w[0] = 0x1005;
+    r = c.out(m, w, w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 6);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xE1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x85));
+
+    w[0] = 0x453;
+    r = c.out(m, w, w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 5);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xD1));
+    assert(n[4] == char(0x93));
+
+    w[0] = 0x56;
+    r = c.out(m, w, w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0x56));
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  {
+    typedef std::codecvt_utf8_utf16<CharT> C;
+    C c;
+    CharT w[2] = {0xD8C0, 0xDC03};
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, w, w + 2, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 4);
+    assert(n[0] == char(0xF1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x80));
+    assert(n[3] == char(0x83));
+
+    w[0] = 0x1005;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 3);
+    assert(n[0] == char(0xE1));
+    assert(n[1] == char(0x80));
+    assert(n[2] == char(0x85));
+
+    w[0] = 0x453;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+
+    w[0] = 0x56;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x1000> C;
+    C c;
+    CharT w[2] = {0xD8C0, 0xDC03};
+    char n[4] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, w, w + 2, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    w[0] = 0x1005;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::error);
+    assert(wp == w);
+    assert(np == n);
+
+    w[0] = 0x453;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 2);
+    assert(n[0] == char(0xD1));
+    assert(n[1] == char(0x93));
+
+    w[0] = 0x56;
+    r = c.out(m, w, w + 1, wp, n, n + 4, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 1);
+    assert(n[0] == char(0x56));
+  }
+  {
+    typedef std::codecvt_utf8_utf16<CharT, 0x10ffff, std::generate_header> C;
+    C c;
+    CharT w[2] = {0xD8C0, 0xDC03};
+    char n[7] = {0};
+    const CharT* wp = nullptr;
+    std::mbstate_t m;
+    char* np = nullptr;
+    std::codecvt_base::result r = c.out(m, w, w + 2, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 2);
+    assert(np == n + 7);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xF1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x80));
+    assert(n[6] == char(0x83));
+
+    w[0] = 0x1005;
+    r = c.out(m, w, w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 6);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xE1));
+    assert(n[4] == char(0x80));
+    assert(n[5] == char(0x85));
+
+    w[0] = 0x453;
+    r = c.out(m, w, w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 5);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0xD1));
+    assert(n[4] == char(0x93));
+
+    w[0] = 0x56;
+    r = c.out(m, w, w + 1, wp, n, n + 7, np);
+    assert(r == std::codecvt_base::ok);
+    assert(wp == w + 1);
+    assert(np == n + 4);
+    assert(n[0] == char(0xEF));
+    assert(n[1] == char(0xBB));
+    assert(n[2] == char(0xBF));
+    assert(n[3] == char(0x56));
+  }
+}
+
+int main(int, char**) {
+#if !defined(_WIN32) && !defined(TEST_HAS_NO_WIDE_CHARACTERS)
+  TestHelper<wchar_t>::test();
+#endif
+  TestHelper<char32_t>::test();
+  TestHelper<char16_t>::test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_unshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_unshift.pass.cpp
new file mode 100644
index 0000000..6db92c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/codecvt_utf8_utf16_unshift.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf8_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     unshift(stateT& state,
+//             externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::codecvt_utf8_utf16<wchar_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+#endif
+    {
+        typedef std::codecvt_utf8_utf16<char16_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+    {
+        typedef std::codecvt_utf8_utf16<char32_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/depr.verify.cpp
new file mode 100644
index 0000000..d0f5877
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.stdcvt/depr.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-wide-characters
+
+// <codecvt>
+
+// ensure that codecvt content is marked as deprecated
+
+#include <codecvt>
+
+std::codecvt_mode c1; // expected-warning {{'codecvt_mode' is deprecated}}
+std::codecvt_utf8<wchar_t> c2; // expected-warning-re {{'codecvt_utf8<wchar_t{{.*}}>' is deprecated}}
+std::codecvt_utf16<wchar_t> c3; // expected-warning-re {{'codecvt_utf16<wchar_t{{.*}}>' is deprecated}}
+std::codecvt_utf8_utf16<wchar_t> c4; // expected-warning-re {{'codecvt_utf8_utf16<wchar_t{{.*}}>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locale.syn/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locale.syn/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locale.syn/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isalnum.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isalnum.pass.cpp
new file mode 100644
index 0000000..f4cb637
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isalnum.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isalnum (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::isalnum(' ', l));
+    assert(!std::isalnum('<', l));
+    assert(!std::isalnum('\x8', l));
+    assert( std::isalnum('A', l));
+    assert( std::isalnum('a', l));
+    assert( std::isalnum('z', l));
+    assert( std::isalnum('3', l));
+    assert(!std::isalnum('.', l));
+    assert( std::isalnum('f', l));
+    assert( std::isalnum('9', l));
+    assert(!std::isalnum('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isalpha.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isalpha.pass.cpp
new file mode 100644
index 0000000..e4e3f43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isalpha.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isalpha (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::isalpha(' ', l));
+    assert(!std::isalpha('<', l));
+    assert(!std::isalpha('\x8', l));
+    assert( std::isalpha('A', l));
+    assert( std::isalpha('a', l));
+    assert( std::isalpha('z', l));
+    assert(!std::isalpha('3', l));
+    assert(!std::isalpha('.', l));
+    assert( std::isalpha('f', l));
+    assert(!std::isalpha('9', l));
+    assert(!std::isalpha('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/iscntrl.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/iscntrl.pass.cpp
new file mode 100644
index 0000000..5f4711f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/iscntrl.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool iscntrl (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::iscntrl(' ', l));
+    assert(!std::iscntrl('<', l));
+    assert( std::iscntrl('\x8', l));
+    assert(!std::iscntrl('A', l));
+    assert(!std::iscntrl('a', l));
+    assert(!std::iscntrl('z', l));
+    assert(!std::iscntrl('3', l));
+    assert(!std::iscntrl('.', l));
+    assert(!std::iscntrl('f', l));
+    assert(!std::iscntrl('9', l));
+    assert(!std::iscntrl('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isdigit.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isdigit.pass.cpp
new file mode 100644
index 0000000..f8a4d32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isdigit.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isdigit (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::isdigit(' ', l));
+    assert(!std::isdigit('<', l));
+    assert(!std::isdigit('\x8', l));
+    assert(!std::isdigit('A', l));
+    assert(!std::isdigit('a', l));
+    assert(!std::isdigit('z', l));
+    assert( std::isdigit('3', l));
+    assert(!std::isdigit('.', l));
+    assert(!std::isdigit('f', l));
+    assert( std::isdigit('9', l));
+    assert(!std::isdigit('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isgraph.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isgraph.pass.cpp
new file mode 100644
index 0000000..944b5eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isgraph.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isgraph (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::isgraph(' ', l));
+    assert( std::isgraph('<', l));
+    assert(!std::isgraph('\x8', l));
+    assert( std::isgraph('A', l));
+    assert( std::isgraph('a', l));
+    assert( std::isgraph('z', l));
+    assert( std::isgraph('3', l));
+    assert( std::isgraph('.', l));
+    assert( std::isgraph('f', l));
+    assert( std::isgraph('9', l));
+    assert( std::isgraph('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/islower.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/islower.pass.cpp
new file mode 100644
index 0000000..a864d84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/islower.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool islower (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::islower(' ', l));
+    assert(!std::islower('<', l));
+    assert(!std::islower('\x8', l));
+    assert(!std::islower('A', l));
+    assert( std::islower('a', l));
+    assert( std::islower('z', l));
+    assert(!std::islower('3', l));
+    assert(!std::islower('.', l));
+    assert( std::islower('f', l));
+    assert(!std::islower('9', l));
+    assert(!std::islower('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isprint.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isprint.pass.cpp
new file mode 100644
index 0000000..e2f75ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isprint.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isprint (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert( std::isprint(' ', l));
+    assert( std::isprint('<', l));
+    assert(!std::isprint('\x8', l));
+    assert( std::isprint('A', l));
+    assert( std::isprint('a', l));
+    assert( std::isprint('z', l));
+    assert( std::isprint('3', l));
+    assert( std::isprint('.', l));
+    assert( std::isprint('f', l));
+    assert( std::isprint('9', l));
+    assert( std::isprint('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/ispunct.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/ispunct.pass.cpp
new file mode 100644
index 0000000..7cbc506
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/ispunct.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool ispunct (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::ispunct(' ', l));
+    assert( std::ispunct('<', l));
+    assert(!std::ispunct('\x8', l));
+    assert(!std::ispunct('A', l));
+    assert(!std::ispunct('a', l));
+    assert(!std::ispunct('z', l));
+    assert(!std::ispunct('3', l));
+    assert( std::ispunct('.', l));
+    assert(!std::ispunct('f', l));
+    assert(!std::ispunct('9', l));
+    assert( std::ispunct('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isspace.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isspace.pass.cpp
new file mode 100644
index 0000000..cde85fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isspace.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isspace (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert( std::isspace(' ', l));
+    assert(!std::isspace('<', l));
+    assert(!std::isspace('\x8', l));
+    assert(!std::isspace('A', l));
+    assert(!std::isspace('a', l));
+    assert(!std::isspace('z', l));
+    assert(!std::isspace('3', l));
+    assert(!std::isspace('.', l));
+    assert(!std::isspace('f', l));
+    assert(!std::isspace('9', l));
+    assert(!std::isspace('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isupper.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isupper.pass.cpp
new file mode 100644
index 0000000..297207a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isupper.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isupper (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::isupper(' ', l));
+    assert(!std::isupper('<', l));
+    assert(!std::isupper('\x8', l));
+    assert( std::isupper('A', l));
+    assert(!std::isupper('a', l));
+    assert(!std::isupper('z', l));
+    assert(!std::isupper('3', l));
+    assert(!std::isupper('.', l));
+    assert(!std::isupper('f', l));
+    assert(!std::isupper('9', l));
+    assert(!std::isupper('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isxdigit.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isxdigit.pass.cpp
new file mode 100644
index 0000000..facdb08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/classification/isxdigit.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> bool isxdigit (charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(!std::isxdigit(' ', l));
+    assert(!std::isxdigit('<', l));
+    assert(!std::isxdigit('\x8', l));
+    assert( std::isxdigit('A', l));
+    assert( std::isxdigit('a', l));
+    assert(!std::isxdigit('z', l));
+    assert( std::isxdigit('3', l));
+    assert(!std::isxdigit('.', l));
+    assert( std::isxdigit('f', l));
+    assert( std::isxdigit('9', l));
+    assert(!std::isxdigit('+', l));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/ctor.pass.cpp
new file mode 100644
index 0000000..5846e4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/ctor.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// wbuffer_convert(streambuf* bytebuf = 0, Codecvt* pcvt = new Codecvt,
+//                 state_type state = state_type());          // before C++14
+// explicit wbuffer_convert(streambuf* bytebuf = nullptr, Codecvt* pcvt = new Codecvt,
+//                          state_type state = state_type()); // before C++20
+// wbuffer_convert() : wbuffer_convert(nullptr) {} // C++20
+// explicit wbuffer_convert(streambuf* bytebuf, Codecvt* pcvt = new Codecvt,
+//                          state_type state = state_type()); // C++20
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > B;
+#if TEST_STD_VER > 11
+    static_assert(!std::is_convertible<std::streambuf*, B>::value, "");
+    static_assert( std::is_constructible<B, std::streambuf*>::value, "");
+#endif
+    {
+        B b;
+        assert(b.rdbuf() == nullptr);
+        assert(globalMemCounter.checkOutstandingNewNotEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        std::stringstream s;
+        B b(s.rdbuf());
+        assert(b.rdbuf() == s.rdbuf());
+        assert(globalMemCounter.checkOutstandingNewNotEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        std::stringstream s;
+        B b(s.rdbuf(), new std::codecvt_utf8<wchar_t>);
+        assert(b.rdbuf() == s.rdbuf());
+        assert(globalMemCounter.checkOutstandingNewNotEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        std::stringstream s;
+        B b(s.rdbuf(), new std::codecvt_utf8<wchar_t>, std::mbstate_t());
+        assert(b.rdbuf() == s.rdbuf());
+        assert(globalMemCounter.checkOutstandingNewNotEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+#if TEST_STD_VER >= 11
+    {
+      static_assert(test_convertible<B>(), "");
+      static_assert(!test_convertible<B, std::streambuf*>(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/depr.verify.cpp
new file mode 100644
index 0000000..54819c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/depr.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// XFAIL: no-wide-characters
+
+// <codecvt>
+
+// ensure that wbuffer_convert is marked as deprecated
+
+#include <codecvt>
+#include <locale>
+
+std::wbuffer_convert<std::codecvt_utf8<wchar_t>> c1; // expected-warning-re {{'wbuffer_convert<std::codecvt_utf8<wchar_t{{.*}}>>' is deprecated}}
+// expected-warning-re@-1 {{'codecvt_utf8<wchar_t{{.*}}>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/overflow.pass.cpp
new file mode 100644
index 0000000..e033304
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/overflow.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// int_type overflow(int_type c = traits::eof());
+
+// This test is not entirely portable
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include <codecvt>
+#include <fstream>
+#include <sstream>
+
+#include "test_macros.h"
+
+struct test_buf
+    : public std::wbuffer_convert<std::codecvt_utf8<wchar_t> >
+{
+    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > base;
+    typedef base::char_type   char_type;
+    typedef base::int_type    int_type;
+    typedef base::traits_type traits_type;
+
+    explicit test_buf(std::streambuf* sb) : base(sb) {}
+
+    char_type* pbase() const {return base::pbase();}
+    char_type* pptr()  const {return base::pptr();}
+    char_type* epptr() const {return base::epptr();}
+    void gbump(int n) {base::gbump(n);}
+
+    virtual int_type overflow(int_type c = traits_type::eof()) {return base::overflow(c);}
+};
+
+int main(int, char**)
+{
+    {
+        std::string s;
+        {
+            std::ostringstream out;
+            test_buf f(out.rdbuf());
+            assert(f.pbase() == 0);
+            assert(f.pptr() == 0);
+            assert(f.epptr() == 0);
+            assert(f.overflow(L'a') == L'a');
+            assert(f.pbase() != 0);
+            assert(f.pptr() == f.pbase());
+            assert(f.epptr() - f.pbase() == 4095);
+            s = out.str();
+        }
+        {
+            std::istringstream in(s);
+            test_buf f(in.rdbuf());
+            assert(f.sgetc() == L'a');
+        }
+    }
+    {
+        std::string s;
+        {
+            std::ostringstream out;
+            test_buf f(out.rdbuf());
+            f.pubsetbuf(0, 0);
+            assert(f.pbase() == 0);
+            assert(f.pptr() == 0);
+            assert(f.epptr() == 0);
+            assert(f.overflow('a') == 'a');
+            assert(f.pbase() == 0);
+            assert(f.pptr() == 0);
+            assert(f.epptr() == 0);
+            s = out.str();
+        }
+        {
+            std::istringstream in(s);
+            test_buf f(in.rdbuf());
+            assert(f.sgetc() == L'a');
+        }
+    }
+    // TODO: Move this to std::stringstream once https://llvm.org/PR59083 has been resolved
+#ifndef TEST_HAS_NO_FSTREAM
+    {
+        {
+            std::ofstream bs("overflow.dat");
+            test_buf f(bs.rdbuf());
+            assert(f.sputc(0x4E51) == 0x4E51);
+            assert(f.sputc(0x4E52) == 0x4E52);
+            assert(f.sputc(0x4E53) == 0x4E53);
+        }
+        {
+            std::ifstream f("overflow.dat");
+            assert(f.is_open());
+            assert(f.get() == 0xE4);
+            assert(f.get() == 0xB9);
+            assert(f.get() == 0x91);
+            assert(f.get() == 0xE4);
+            assert(f.get() == 0xB9);
+            assert(f.get() == 0x92);
+            assert(f.get() == 0xE4);
+            assert(f.get() == 0xB9);
+            assert(f.get() == 0x93);
+            assert(f.get() == -1);
+        }
+        std::remove("overflow.dat");
+    }
+#endif // TEST_HAS_NO_FSTREAM
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/pbackfail.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/pbackfail.pass.cpp
new file mode 100644
index 0000000..e8e4953
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/pbackfail.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// int_type pbackfail(int_type c = traits::eof());
+
+// This test is not entirely portable
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include <codecvt>
+#include <sstream>
+
+struct test_buf
+    : public std::wbuffer_convert<std::codecvt_utf8<wchar_t> >
+{
+    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > base;
+    typedef base::char_type   char_type;
+    typedef base::int_type    int_type;
+    typedef base::traits_type traits_type;
+
+    explicit test_buf(std::streambuf* sb) : base(sb) {}
+
+    char_type* eback() const {return base::eback();}
+    char_type* gptr()  const {return base::gptr();}
+    char_type* egptr() const {return base::egptr();}
+    void gbump(int n) {base::gbump(n);}
+
+    virtual int_type pbackfail(int_type c = traits_type::eof()) {return base::pbackfail(c);}
+};
+
+int main(int, char**)
+{
+    std::string const s = "123456789";
+    {
+        std::istringstream in(s);
+        test_buf f(in.rdbuf());
+        assert(f.sbumpc() == L'1');
+        assert(f.sgetc() == L'2');
+        assert(f.pbackfail(L'a') == test_buf::traits_type::eof());
+    }
+    {
+        std::istringstream in(s);
+        test_buf f(in.rdbuf());
+        assert(f.sbumpc() == L'1');
+        assert(f.sgetc() == L'2');
+        assert(f.pbackfail(L'a') == test_buf::traits_type::eof());
+        assert(f.sbumpc() == L'2');
+        assert(f.sgetc() == L'3');
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/rdbuf.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/rdbuf.pass.cpp
new file mode 100644
index 0000000..c9c1345
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/rdbuf.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// streambuf *rdbuf(streambuf *bytebuf);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > B;
+    {
+        std::stringstream s;
+        B b;
+        assert(b.rdbuf() == nullptr);
+        b.rdbuf(s.rdbuf());
+        assert(b.rdbuf() == s.rdbuf());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/seekoff.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/seekoff.pass.cpp
new file mode 100644
index 0000000..a6f58e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/seekoff.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// pos_type seekoff(off_type off, ios_base::seekdir way,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+// pos_type seekpos(pos_type sp,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+// This test is not entirely portable
+
+// XFAIL: no-wide-characters
+
+// TODO: Avoid using <fstream> in this test.
+// XFAIL: no-fstream
+
+#include <locale>
+#include <codecvt>
+#include <fstream>
+#include <cassert>
+
+class test_codecvt
+    : public std::codecvt<wchar_t, char, std::mbstate_t>
+{
+    typedef std::codecvt<wchar_t, char, std::mbstate_t> base;
+public:
+    explicit test_codecvt(std::size_t refs = 0) : base(refs) {}
+    ~test_codecvt() {}
+};
+
+int main(int, char**)
+{
+    {
+        wchar_t buf[10];
+        typedef std::wbuffer_convert<test_codecvt> test_buf;
+        typedef test_buf::pos_type pos_type;
+        std::fstream bs("seekoff.dat", std::ios::trunc | std::ios::in
+                                                       | std::ios::out);
+        test_buf f(bs.rdbuf());
+        f.pubsetbuf(buf, sizeof(buf)/sizeof(buf[0]));
+        f.sputn(L"abcdefghijklmnopqrstuvwxyz", 26);
+        assert(buf[0] == L'v');
+        pos_type p = f.pubseekoff(-15, std::ios_base::cur);
+        assert(p == 11);
+        assert(f.sgetc() == L'l');
+        f.pubseekoff(0, std::ios_base::beg);
+        assert(f.sgetc() == L'a');
+        f.pubseekoff(-1, std::ios_base::end);
+        assert(f.sgetc() == L'z');
+        assert(f.pubseekpos(p) == p);
+        assert(f.sgetc() == L'l');
+    }
+    std::remove("seekoff.dat");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/state.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/state.pass.cpp
new file mode 100644
index 0000000..57058d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/state.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// state_type state() const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > B;
+    {
+        B b;
+        std::mbstate_t s = b.state();
+        ((void)s);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp
new file mode 100644
index 0000000..b37424b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// XFAIL: no-wide-characters
+
+#include <cassert>
+#include <codecvt>
+#include <locale>
+#include <sstream>
+
+int main(int, char**) {
+    std::string storage;
+    {
+        std::ostringstream bytestream;
+        std::wbuffer_convert<std::codecvt_utf8<wchar_t> > mybuf(bytestream.rdbuf());
+        std::wostream mystr(&mybuf);
+        mystr << L"Hello" << std::endl;
+        storage = bytestream.str();
+    }
+    {
+        std::istringstream bytestream(storage);
+        std::wbuffer_convert<std::codecvt_utf8<wchar_t> > mybuf(bytestream.rdbuf());
+        std::wistream mystr(&mybuf);
+        std::wstring ws;
+        mystr >> ws;
+        assert(ws == L"Hello");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/underflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/underflow.pass.cpp
new file mode 100644
index 0000000..32a3b18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/underflow.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wbuffer_convert<Codecvt, Elem, Tr>
+
+// int_type underflow();
+
+// This test is not entirely portable
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <cassert>
+#include <codecvt>
+#include <sstream>
+
+#include "test_macros.h"
+
+struct test_buf
+    : public std::wbuffer_convert<std::codecvt_utf8<wchar_t> >
+{
+    typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > base;
+    typedef base::char_type   char_type;
+    typedef base::int_type    int_type;
+    typedef base::traits_type traits_type;
+
+    explicit test_buf(std::streambuf* sb) : base(sb) {}
+
+    char_type* eback() const {return base::eback();}
+    char_type* gptr()  const {return base::gptr();}
+    char_type* egptr() const {return base::egptr();}
+    void gbump(int n) {base::gbump(n);}
+
+    virtual int_type underflow() {return base::underflow();}
+};
+
+int main(int, char**)
+{
+    {
+        std::string s = "123456789";
+        std::istringstream bs(s);
+        test_buf f(bs.rdbuf());
+        assert(f.eback() == 0);
+        assert(f.gptr() == 0);
+        assert(f.egptr() == 0);
+        assert(f.underflow() == L'1');
+        assert(f.eback() != 0);
+        assert(f.eback() == f.gptr());
+        assert(*f.gptr() == L'1');
+        assert(f.egptr() - f.eback() == 9);
+    }
+    {
+        std::string s = "123456789";
+        std::istringstream bs(s);
+        test_buf f(bs.rdbuf());
+        assert(f.eback() == 0);
+        assert(f.gptr() == 0);
+        assert(f.egptr() == 0);
+        assert(f.underflow() == L'1');
+        assert(f.eback() != 0);
+        assert(f.eback() == f.gptr());
+        assert(*f.gptr() == L'1');
+        assert(f.egptr() - f.eback() == 9);
+        f.gbump(8);
+        assert(f.sgetc() == L'9');
+        assert(f.eback()[0] == L'1');
+        assert(f.eback()[1] == L'2');
+        assert(f.eback()[2] == L'3');
+        assert(f.eback()[3] == L'4');
+        assert(f.gptr() - f.eback() == 8);
+        assert(*f.gptr() == L'9');
+        assert(f.egptr() - f.gptr() == 1);
+    }
+    {
+        std::string s = "乑乒乓";
+        std::istringstream bs(s);
+        test_buf f(bs.rdbuf());
+        assert(f.sbumpc() == 0x4E51);
+        assert(f.sbumpc() == 0x4E52);
+        assert(f.sbumpc() == 0x4E53);
+        assert(f.sbumpc() == test_buf::traits_type::eof());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.character/tolower.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.character/tolower.pass.cpp
new file mode 100644
index 0000000..f686e71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.character/tolower.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> charT tolower(charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(std::tolower(' ', l) == ' ');
+    assert(std::tolower('<', l) == '<');
+    assert(std::tolower('\x8', l) == '\x8');
+    assert(std::tolower('A', l) == 'a');
+    assert(std::tolower('a', l) == 'a');
+    assert(std::tolower('z', l) == 'z');
+    assert(std::tolower('3', l) == '3');
+    assert(std::tolower('.', l) == '.');
+    assert(std::tolower('f', l) == 'f');
+    assert(std::tolower('9', l) == '9');
+    assert(std::tolower('+', l) == '+');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.character/toupper.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.character/toupper.pass.cpp
new file mode 100644
index 0000000..5a0f6d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.character/toupper.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class charT> charT toupper(charT c, const locale& loc);
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::locale l;
+    assert(std::toupper(' ', l) == ' ');
+    assert(std::toupper('<', l) == '<');
+    assert(std::toupper('\x8', l) == '\x8');
+    assert(std::toupper('A', l) == 'A');
+    assert(std::toupper('a', l) == 'A');
+    assert(std::toupper('z', l) == 'Z');
+    assert(std::toupper('3', l) == '3');
+    assert(std::toupper('.', l) == '.');
+    assert(std::toupper('f', l) == 'F');
+    assert(std::toupper('9', l) == '9');
+    assert(std::toupper('+', l) == '+');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/converted.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/converted.pass.cpp
new file mode 100644
index 0000000..e1b1f69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/converted.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// size_t converted() const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  static_assert((std::is_same<CharT, wchar_t>::value), "");
+  {
+    typedef std::codecvt_utf8<CharT> Codecvt;
+    typedef std::wstring_convert<Codecvt> Myconv;
+    Myconv myconv;
+    assert(myconv.converted() == 0);
+    std::string bs = myconv.to_bytes(L"\u1005");
+    assert(myconv.converted() == 1);
+    bs = myconv.to_bytes(L"\u1005e");
+    assert(myconv.converted() == 2);
+    std::wstring ws = myconv.from_bytes("\xE1\x80\x85");
+    assert(myconv.converted() == 3);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  static_assert((std::is_same<CharT, wchar_t>::value), "");
+  {
+    typedef std::codecvt_utf8<CharT> Codecvt;
+    typedef std::wstring_convert<Codecvt> Myconv;
+    Myconv myconv;
+    assert(myconv.converted() == 0);
+    std::string bs = myconv.to_bytes(L"\U00040003");
+    assert(myconv.converted() == 1);
+    bs = myconv.to_bytes(L"\U00040003e");
+    assert(myconv.converted() == 2);
+    std::wstring ws = myconv.from_bytes("\xF1\x80\x80\x83");
+    assert(myconv.converted() == 4);
+  }
+}
+
+int main(int, char**) {
+  TestHelper<wchar_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp
new file mode 100644
index 0000000..8c03210
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// wstring_convert(Codecvt* pcvt = new Codecvt);          // before C++14
+// explicit wstring_convert(Codecvt* pcvt = new Codecvt); // before C++20
+// wstring_convert() : wstring_convert(new Codecvt) {}    // C++20
+// explicit wstring_convert(Codecvt* pcvt);               // C++20
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::codecvt_utf8<wchar_t> Codecvt;
+        typedef std::wstring_convert<Codecvt> Myconv;
+        Myconv myconv;
+        assert(myconv.converted() == 0);
+    }
+    {
+        typedef std::codecvt_utf8<wchar_t> Codecvt;
+        typedef std::wstring_convert<Codecvt> Myconv;
+        Myconv myconv(new Codecvt);
+        assert(myconv.converted() == 0);
+#if TEST_STD_VER > 11
+        static_assert(!std::is_convertible<Codecvt*, Myconv>::value, "");
+        static_assert( std::is_constructible<Myconv, Codecvt*>::value, "");
+#endif
+    }
+
+#if TEST_STD_VER >= 11
+    {
+      typedef std::codecvt_utf8<wchar_t> Codecvt;
+      typedef std::wstring_convert<Codecvt> B;
+      static_assert(test_convertible<B>(), "");
+      static_assert(!test_convertible<B, Codecvt*>(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt_state.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt_state.pass.cpp
new file mode 100644
index 0000000..5032a30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt_state.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// wstring_convert(Codecvt* pcvt, state_type state);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::codecvt_utf8<wchar_t> Codecvt;
+        typedef std::wstring_convert<Codecvt> Myconv;
+        Myconv myconv(new Codecvt, std::mbstate_t());
+        assert(myconv.converted() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_copy.pass.cpp
new file mode 100644
index 0000000..4125869
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_copy.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// These constructors are still unavailable in C++03, but this test depends
+// on access control SFINAE and fails without it.
+// UNSUPPORTED: c++03
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// wstring_convert(wstring_convert const&) = delete;
+// wstring_convert& operator=(wstring_convert const&) = delete;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt_utf8<wchar_t> Codecvt;
+    typedef std::wstring_convert<Codecvt> Myconv;
+    static_assert(!std::is_copy_constructible<Myconv>::value, "");
+    static_assert(!std::is_copy_assignable<Myconv>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_err_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_err_string.pass.cpp
new file mode 100644
index 0000000..f9e5ee3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_err_string.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// wstring_convert(const byte_string& byte_err,
+//                 const wide_string& wide_err = wide_string());
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt_utf8<wchar_t> Codecvt;
+    typedef std::wstring_convert<Codecvt> Myconv;
+#if TEST_STD_VER > 11
+    static_assert(!std::is_convertible<std::string, Myconv>::value, "");
+    static_assert( std::is_constructible<Myconv, std::string>::value, "");
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        Myconv myconv;
+        try
+        {
+            TEST_IGNORE_NODISCARD myconv.to_bytes(L"\xDA83");
+            assert(false);
+        }
+        catch (const std::range_error&)
+        {
+        }
+        try
+        {
+            TEST_IGNORE_NODISCARD myconv.from_bytes('\xA5');
+            assert(false);
+        }
+        catch (const std::range_error&)
+        {
+        }
+    }
+#endif
+    {
+        Myconv myconv("byte error");
+        std::string bs = myconv.to_bytes(L"\xDA83");
+        assert(bs == "byte error");
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            TEST_IGNORE_NODISCARD myconv.from_bytes('\xA5');
+            assert(false);
+        }
+        catch (const std::range_error&)
+        {
+        }
+#endif
+    }
+    {
+        Myconv myconv("byte error", L"wide error");
+        std::string bs = myconv.to_bytes(L"\xDA83");
+        assert(bs == "byte error");
+        std::wstring ws = myconv.from_bytes('\xA5');
+        assert(ws == L"wide error");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/depr.verify.cpp
new file mode 100644
index 0000000..f44a8af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/depr.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-wide-characters
+
+// <codecvt>
+
+// ensure that wstring_convert is marked as deprecated
+
+#include <codecvt>
+#include <locale>
+
+std::wstring_convert<std::codecvt_utf8<wchar_t>> c1; // expected-warning-re {{'wstring_convert<std::codecvt_utf8<wchar_t{{.*}}>>' is deprecated}}
+// expected-warning-re@-1 {{'codecvt_utf8<wchar_t{{.*}}>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/from_bytes.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/from_bytes.pass.cpp
new file mode 100644
index 0000000..157b745
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/from_bytes.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// wide_string from_bytes(char byte);
+// wide_string from_bytes(const char* ptr);
+// wide_string from_bytes(const byte_string& str);
+// wide_string from_bytes(const char* first, const char* last);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  static_assert((std::is_same<CharT, wchar_t>::value), "");
+  {
+    std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
+    std::string bs("\xE1\x80\x85");
+    std::wstring ws = myconv.from_bytes('a');
+    assert(ws == L"a");
+    ws = myconv.from_bytes(bs.c_str());
+    assert(ws == L"\u1005");
+    ws = myconv.from_bytes(bs);
+    assert(ws == L"\u1005");
+    ws = myconv.from_bytes(bs.data(), bs.data() + bs.size());
+    assert(ws == L"\u1005");
+    ws = myconv.from_bytes("");
+    assert(ws.size() == 0);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  static_assert((std::is_same<CharT, wchar_t>::value), "");
+  {
+    std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
+    std::string bs("\xF1\x80\x80\x83");
+    std::wstring ws = myconv.from_bytes('a');
+    assert(ws == L"a");
+    ws = myconv.from_bytes(bs.c_str());
+    assert(ws == L"\U00040003");
+    ws = myconv.from_bytes(bs);
+    assert(ws == L"\U00040003");
+    ws = myconv.from_bytes(bs.data(), bs.data() + bs.size());
+    assert(ws == L"\U00040003");
+    ws = myconv.from_bytes("");
+    assert(ws.size() == 0);
+  }
+}
+
+int main(int, char**) {
+  TestHelper<wchar_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/state.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/state.pass.cpp
new file mode 100644
index 0000000..3bf3736
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/state.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// state_type state() const;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::codecvt_utf8<wchar_t> Codecvt;
+    typedef std::wstring_convert<Codecvt> Myconv;
+    Myconv myconv;
+    std::mbstate_t s = myconv.state();
+    ((void)s);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/to_bytes.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/to_bytes.pass.cpp
new file mode 100644
index 0000000..52c5897
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/to_bytes.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
+
+// byte_string to_bytes(Elem wchar);
+// byte_string to_bytes(const Elem* wptr);
+// byte_string to_bytes(const wide_string& wstr);
+// byte_string to_bytes(const Elem* first, const Elem* last);
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT, size_t = sizeof(CharT)>
+struct TestHelper;
+template <class CharT>
+struct TestHelper<CharT, 2> {
+  static void test();
+};
+template <class CharT>
+struct TestHelper<CharT, 4> {
+  static void test();
+};
+
+template <class CharT>
+void TestHelper<CharT, 2>::test() {
+  static_assert((std::is_same<CharT, wchar_t>::value), "");
+  {
+    std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
+    std::wstring ws(1, L'\u1005');
+    std::string bs = myconv.to_bytes(ws[0]);
+    assert(bs == "\xE1\x80\x85");
+    bs = myconv.to_bytes(ws.c_str());
+    assert(bs == "\xE1\x80\x85");
+    bs = myconv.to_bytes(ws);
+    assert(bs == "\xE1\x80\x85");
+    bs = myconv.to_bytes(ws.data(), ws.data() + ws.size());
+    assert(bs == "\xE1\x80\x85");
+    bs = myconv.to_bytes(L"");
+    assert(bs.size() == 0);
+  }
+}
+
+template <class CharT>
+void TestHelper<CharT, 4>::test() {
+  static_assert((std::is_same<CharT, wchar_t>::value), "");
+  {
+    std::wstring_convert<std::codecvt_utf8<CharT> > myconv;
+    std::wstring ws(1, *L"\U00040003");
+    std::string bs = myconv.to_bytes(ws[0]);
+    assert(bs == "\xF1\x80\x80\x83");
+    bs = myconv.to_bytes(ws.c_str());
+    assert(bs == "\xF1\x80\x80\x83");
+    bs = myconv.to_bytes(ws);
+    assert(bs == "\xF1\x80\x80\x83");
+    bs = myconv.to_bytes(ws.data(), ws.data() + ws.size());
+    assert(bs == "\xF1\x80\x80\x83");
+    bs = myconv.to_bytes(L"");
+    assert(bs.size() == 0);
+  }
+}
+
+int main(int, char**) {
+  TestHelper<wchar_t>::test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/types.pass.cpp
new file mode 100644
index 0000000..0ea13e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/types.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template<class Codecvt, class Elem = wchar_t,
+//          class Wide_alloc = allocator<Elem>,
+//          class Byte_alloc = allocator<char>>
+// class wstring_convert
+// {
+// public:
+//     typedef basic_string<char, char_traits<char>, Byte_alloc> byte_string;
+//     typedef basic_string<Elem, char_traits<Elem>, Wide_alloc> wide_string;
+//     typedef typename Codecvt::state_type                      state_type;
+//     typedef typename wide_string::traits_type::int_type       int_type;
+
+// XFAIL: no-wide-characters
+
+#include <locale>
+#include <codecvt>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::wstring_convert<std::codecvt_utf8<wchar_t> > myconv;
+        static_assert((std::is_same<myconv::byte_string, std::string>::value), "");
+        static_assert((std::is_same<myconv::wide_string, std::wstring>::value), "");
+        static_assert((std::is_same<myconv::state_type, std::mbstate_t>::value), "");
+        static_assert((std::is_same<myconv::int_type, std::char_traits<wchar_t>::int_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.global.templates/has_facet.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.global.templates/has_facet.pass.cpp
new file mode 100644
index 0000000..00fc8ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.global.templates/has_facet.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class Facet> bool has_facet(const locale& loc) throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct my_facet
+    : public std::locale::facet
+{
+    static std::locale::id id;
+};
+
+std::locale::id my_facet::id;
+
+int main(int, char**)
+{
+    std::locale loc;
+    assert(std::has_facet<std::ctype<char> >(loc));
+    assert(!std::has_facet<my_facet>(loc));
+    std::locale loc2(loc, new my_facet);
+    assert(std::has_facet<my_facet>(loc2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
new file mode 100644
index 0000000..f79317f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// template <class Facet> const Facet& use_facet(const locale& loc);
+
+#include <locale>
+#include <cassert>
+#include <typeinfo>
+
+#include "test_macros.h"
+
+int facet_count = 0;
+
+struct my_facet
+    : public std::locale::facet
+{
+    static std::locale::id id;
+
+    bool im_alive;
+
+    my_facet() : im_alive(true) {++facet_count;}
+    ~my_facet() {im_alive = false; --facet_count;}
+};
+
+std::locale::id my_facet::id;
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        const my_facet& f = std::use_facet<my_facet>(std::locale());
+        ((void)f); // Prevent unused warning
+        assert(false);
+    }
+    catch (std::bad_cast&)
+    {
+    }
+#endif
+    const my_facet* fp = 0;
+    {
+        std::locale loc(std::locale(), new my_facet);
+        const my_facet& f = std::use_facet<my_facet>(loc);
+        assert(f.im_alive);
+        fp = &f;
+        assert(fp->im_alive);
+        assert(facet_count == 1);
+    }
+    assert(facet_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/assign.pass.cpp
new file mode 100644
index 0000000..87c7ec2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/assign.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.ru_RU.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// const locale& operator=(const locale& other) throw();
+
+#include <locale>
+#include <cassert>
+#include <new>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_ru_RU_UTF_8);
+        std::locale loc2;
+        loc2 = loc;
+        assert(loc == loc2);
+        check(loc);
+        check(loc2);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/char_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/char_pointer.pass.cpp
new file mode 100644
index 0000000..7c29d9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/char_pointer.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support most of LC_* at the moment
+// XFAIL: netbsd
+
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// explicit locale(const char* std_name);
+
+#include <locale>
+#include <new>
+#include <cassert>
+
+#include "count_new.h"
+#include "platform_support.h" // locale name macros
+
+#include "test_macros.h"
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_ru_RU_UTF_8);
+        check(loc);
+        std::locale loc2(LOCALE_ru_RU_UTF_8);
+        check(loc2);
+        assert(loc == loc2);
+        std::locale loc3(LOCALE_zh_CN_UTF_8);
+        check(loc3);
+        assert(!(loc == loc3));
+        assert(loc != loc3);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            std::locale((const char*)0);
+            assert(false);
+        }
+        catch (std::runtime_error&)
+        {
+        }
+        try
+        {
+            std::locale("spazbot");
+            assert(false);
+        }
+        catch (std::runtime_error&)
+        {
+        }
+#endif
+        std::locale ok("");
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/copy.pass.cpp
new file mode 100644
index 0000000..09e4e45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/copy.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.fr_FR.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// locale(const locale& other) throw();
+
+#include <locale>
+#include <cassert>
+#include <new>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_fr_FR_UTF_8);
+        std::locale loc2 = loc;
+        assert(loc == loc2);
+        check(loc);
+        check(loc2);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/default.pass.cpp
new file mode 100644
index 0000000..2035f5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/default.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// locale() throw();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+#include "count_new.h"
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    int ok;
+    {
+        std::locale loc;
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        assert(loc.name() == "C");
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        check(loc);
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        assert(std::locale::global(std::locale(LOCALE_en_US_UTF_8)) == loc);
+        ok = globalMemCounter.outstanding_new;
+        std::locale loc2;
+        assert(globalMemCounter.checkOutstandingNewEq(ok));
+        check(loc2);
+        assert(globalMemCounter.checkOutstandingNewEq(ok));
+        assert(loc2 == std::locale(LOCALE_en_US_UTF_8));
+        assert(globalMemCounter.checkOutstandingNewEq(ok));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(ok));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_char_pointer_cat.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_char_pointer_cat.pass.cpp
new file mode 100644
index 0000000..3a4bc23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_char_pointer_cat.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// UNSUPPORTED: sanitizer-new-delete
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// locale(const locale& other, const char* std_name, category);
+
+#include <locale>
+#include <new>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_ru_RU_UTF_8);
+        check(loc);
+        std::locale loc2(loc, LOCALE_en_US_UTF_8, std::locale::monetary);
+        check(loc2);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_facetptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_facetptr.pass.cpp
new file mode 100644
index 0000000..8482f49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_facetptr.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.ru_RU.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// template <class Facet> locale(const locale& other, Facet* f);
+
+#include <locale>
+#include <new>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+struct my_facet
+    : public std::locale::facet
+{
+    int test() const {return 5;}
+
+    static std::locale::id id;
+};
+
+std::locale::id my_facet::id;
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_ru_RU_UTF_8);
+        check(loc);
+        std::locale loc2(loc, new my_facet);
+        check(loc2);
+        assert((std::has_facet<my_facet>(loc2)));
+        const my_facet& f = std::use_facet<my_facet>(loc2);
+        assert(f.test() == 5);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        std::locale loc;
+        check(loc);
+        std::locale loc2(loc, (std::ctype<char>*)0);
+        check(loc2);
+        assert(loc == loc2);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_locale_cat.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_locale_cat.pass.cpp
new file mode 100644
index 0000000..4337362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_locale_cat.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// UNSUPPORTED: sanitizer-new-delete
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// locale(const locale& other, const locale& one, category cats);
+
+#include <locale>
+#include <new>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_ru_RU_UTF_8);
+        check(loc);
+        std::locale loc2(loc, std::locale(LOCALE_en_US_UTF_8), std::locale::monetary);
+        check(loc2);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_string_cat.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_string_cat.pass.cpp
new file mode 100644
index 0000000..ee39910
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/locale_string_cat.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.ru_RU.UTF-8
+// UNSUPPORTED: sanitizer-new-delete
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// locale(const locale& other, const string& std_name, category cat);
+
+#include <locale>
+#include <new>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(LOCALE_ru_RU_UTF_8);
+        check(loc);
+        std::locale loc2(loc, std::string(LOCALE_en_US_UTF_8), std::locale::monetary);
+        check(loc2);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/string.pass.cpp
new file mode 100644
index 0000000..1296b74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.cons/string.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.ru_RU.UTF-8
+// REQUIRES: locale.zh_CN.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// explicit locale(const string& std_name);
+
+#include <locale>
+#include <new>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::locale loc(std::string(LOCALE_ru_RU_UTF_8));
+        check(loc);
+        std::locale loc2(std::string(LOCALE_ru_RU_UTF_8));
+        check(loc2);
+        assert(loc == loc2);
+        std::locale loc3(std::string(LOCALE_zh_CN_UTF_8));
+        check(loc3);
+        assert(!(loc == loc3));
+        assert(loc != loc3);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.members/combine.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.members/combine.pass.cpp
new file mode 100644
index 0000000..811c47c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.members/combine.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// template <class Facet> locale combine(const locale& other) const;
+
+#include <locale>
+#include <stdexcept>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+struct my_facet
+    : public std::locale::facet
+{
+    int test() const {return 5;}
+
+    static std::locale::id id;
+};
+
+std::locale::id my_facet::id;
+
+int main(int, char**)
+{
+{
+    globalMemCounter.reset();
+    {
+        std::locale loc;
+        std::locale loc2(loc, new my_facet);
+        std::locale loc3 = loc.combine<my_facet>(loc2);
+        check(loc3);
+        assert(loc3.name() == "*");
+        assert((std::has_facet<my_facet>(loc3)));
+        const my_facet& f = std::use_facet<my_facet>(loc3);
+        assert(f.test() == 5);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+#ifndef TEST_HAS_NO_EXCEPTIONS
+{
+    {
+        std::locale loc;
+        std::locale loc2;
+        try
+        {
+            std::locale loc3 = loc.combine<my_facet>(loc2);
+            assert(false);
+        }
+        catch (std::runtime_error&)
+        {
+        }
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.members/name.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.members/name.pass.cpp
new file mode 100644
index 0000000..ce354b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.members/name.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <locale>
+
+// basic_string<char> name() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::locale loc;
+        assert(loc.name() == "C");
+    }
+    {
+        std::locale loc(LOCALE_en_US_UTF_8);
+        assert(loc.name() == LOCALE_en_US_UTF_8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.operators/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.operators/compare.pass.cpp
new file mode 100644
index 0000000..c435f86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.operators/compare.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// https://llvm.org/PR41018
+// XFAIL: windows-dll && msvc
+
+// <locale>
+
+// template <class charT, class Traits, class Allocator>
+//   bool operator()(const basic_string<charT,Traits,Allocator>& s1,
+//                   const basic_string<charT,Traits,Allocator>& s2) const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::locale l;
+        {
+            std::string s2("aaaaaaA");
+            std::string s3("BaaaaaA");
+            assert(l(s3, s2));
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            std::wstring s2(L"aaaaaaA");
+            std::wstring s3(L"BaaaaaA");
+            assert(l(s3, s2));
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.operators/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.operators/eq.pass.cpp
new file mode 100644
index 0000000..e87bfba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.operators/eq.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <locale>
+
+// basic_string<char> name() const;
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale cloc;
+    std::locale copy(cloc);
+    std::locale n1(LOCALE_en_US_UTF_8);
+    std::locale n2(LOCALE_en_US_UTF_8);
+    std::locale noname1 = n1.combine<std::ctype<char> >(cloc);
+    std::locale nonamec = noname1;
+    std::locale noname2 = n1.combine<std::ctype<char> >(cloc);
+
+    assert(cloc == cloc);
+    assert(cloc == copy);
+    assert(cloc != n1);
+    assert(cloc != n2);
+    assert(cloc != noname1);
+    assert(cloc != nonamec);
+    assert(cloc != noname2);
+
+    assert(copy == cloc);
+    assert(copy == copy);
+    assert(copy != n1);
+    assert(copy != n2);
+    assert(copy != noname1);
+    assert(copy != nonamec);
+    assert(copy != noname2);
+
+    assert(n1 != cloc);
+    assert(n1 != copy);
+    assert(n1 == n1);
+    assert(n1 == n2);
+    assert(n1 != noname1);
+    assert(n1 != nonamec);
+    assert(n1 != noname2);
+
+    assert(n2 != cloc);
+    assert(n2 != copy);
+    assert(n2 == n1);
+    assert(n2 == n2);
+    assert(n2 != noname1);
+    assert(n2 != nonamec);
+    assert(n2 != noname2);
+
+    assert(noname1 != cloc);
+    assert(noname1 != copy);
+    assert(noname1 != n1);
+    assert(noname1 != n2);
+    assert(noname1 == noname1);
+    assert(noname1 == nonamec);
+    assert(noname1 != noname2);
+
+    assert(nonamec != cloc);
+    assert(nonamec != copy);
+    assert(nonamec != n1);
+    assert(nonamec != n2);
+    assert(nonamec == noname1);
+    assert(nonamec == nonamec);
+    assert(nonamec != noname2);
+
+    assert(noname2 != cloc);
+    assert(noname2 != copy);
+    assert(noname2 != n1);
+    assert(noname2 != n2);
+    assert(noname2 != noname1);
+    assert(noname2 != nonamec);
+    assert(noname2 == noname2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.statics/classic.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.statics/classic.pass.cpp
new file mode 100644
index 0000000..72801e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.statics/classic.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// static const locale& classic();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    std::locale loc = std::locale::classic();
+    assert(loc.name() == "C");
+    assert(loc == std::locale("C"));
+    check(loc);
+    check(std::locale("C"));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.statics/global.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.statics/global.pass.cpp
new file mode 100644
index 0000000..b8bfa69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.statics/global.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// This test relies on https://wg21.link/P0482 being implemented, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// This test runs in C++20, but we have deprecated codecvt<char(16|32), char, mbstate_t> in C++20.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <locale>
+
+// static const locale& classic();
+
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+template<class CharT>
+void check_for(const std::locale& loc)
+{
+    assert(std::has_facet<std::collate<CharT> >(loc));
+
+    assert(std::has_facet<std::ctype<CharT> >(loc));
+
+    assert((std::has_facet<std::codecvt<CharT, char, std::mbstate_t> >(loc)));
+
+    assert(std::has_facet<std::moneypunct<CharT> >(loc));
+    assert(std::has_facet<std::money_get<CharT> >(loc));
+    assert(std::has_facet<std::money_put<CharT> >(loc));
+
+    assert(std::has_facet<std::numpunct<CharT> >(loc));
+    assert(std::has_facet<std::num_get<CharT> >(loc));
+    assert(std::has_facet<std::num_put<CharT> >(loc));
+
+    assert(std::has_facet<std::time_get<CharT> >(loc));
+    assert(std::has_facet<std::time_put<CharT> >(loc));
+
+    assert(std::has_facet<std::messages<CharT> >(loc));
+}
+
+void check(const std::locale& loc)
+{
+    check_for<char>(loc);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    check_for<wchar_t>(loc);
+#endif
+
+    assert((std::has_facet<std::codecvt<char16_t, char, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char, std::mbstate_t> >(loc)));
+#if TEST_STD_VER > 17
+    assert((std::has_facet<std::codecvt<char16_t, char8_t, std::mbstate_t> >(loc)));
+    assert((std::has_facet<std::codecvt<char32_t, char8_t, std::mbstate_t> >(loc)));
+#endif
+}
+
+int main(int, char**)
+{
+    std::locale loc;
+    assert(loc.name() == "C");
+    check(loc);
+    assert(std::locale::global(std::locale(LOCALE_en_US_UTF_8)) == loc);
+    std::locale loc2;
+    check(loc2);
+    assert(loc2 == std::locale(LOCALE_en_US_UTF_8));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.category/category.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.category/category.pass.cpp
new file mode 100644
index 0000000..cdb49ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.category/category.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <locale>
+
+// typedef int category;
+
+#include <locale>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::locale::category, int>::value), "");
+    assert(std::locale::none == 0);
+    assert(std::locale::collate);
+    assert(std::locale::ctype);
+    assert(std::locale::monetary);
+    assert(std::locale::numeric);
+    assert(std::locale::time);
+    assert(std::locale::messages);
+    assert((std::locale::collate
+          & std::locale::ctype
+          & std::locale::monetary
+          & std::locale::numeric
+          & std::locale::time
+          & std::locale::messages) == 0);
+    assert((std::locale::collate
+          | std::locale::ctype
+          | std::locale::monetary
+          | std::locale::numeric
+          | std::locale::time
+          | std::locale::messages)
+         == std::locale::all);
+
+    test(std::locale::none);
+    test(std::locale::collate);
+    test(std::locale::ctype);
+    test(std::locale::monetary);
+    test(std::locale::numeric);
+    test(std::locale::time);
+    test(std::locale::messages);
+    test(std::locale::all);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.facet/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.facet/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.facet/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.id/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.id/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/locales/locale/locale.types/locale.id/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/localization/localization.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/localization/localization.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/localization/localization.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/namespace/addressable_functions.sh.cpp b/app/src/main/cpp/libcxx/test/std/namespace/addressable_functions.sh.cpp
new file mode 100644
index 0000000..172659f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/namespace/addressable_functions.sh.cpp
@@ -0,0 +1,206 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure functions specified as being 'addressable' (their address can be
+// taken in a well-defined manner) are indeed addressable. This notion was
+// added by http://wg21.link/p0551. While it was technically only introduced
+// in C++20, we test it in all standard modes because it's basic QOI to provide
+// a consistent behavior for that across standard modes.
+
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %t.tu1.o -DTU1
+// RUN: %{cxx} %{flags} %{compile_flags} -c %s -o %t.tu2.o -DTU2
+// RUN: %{cxx} %t.tu1.o %t.tu2.o %{flags} %{link_flags} -o %t.exe
+// RUN: %{exec} %t.exe
+
+// The functions checked below come from <iostream> & friends
+// UNSUPPORTED: no-localization
+
+#include <cassert>
+#include <ios>
+#include <istream>
+#include <map>
+#include <ostream>
+#include <string>
+#include <utility>
+
+#include "test_macros.h"
+
+typedef std::ios_base& (FormatFlagFunction)(std::ios_base&);
+typedef std::basic_ostream<char>& (OstreamManipFunction)(std::basic_ostream<char>&);
+typedef std::basic_istream<char>& (IstreamManipFunction)(std::basic_istream<char>&);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+typedef std::basic_ostream<wchar_t>& (WOstreamManipFunction)(std::basic_ostream<wchar_t>&);
+typedef std::basic_istream<wchar_t>& (WIstreamManipFunction)(std::basic_istream<wchar_t>&);
+#endif
+
+extern FormatFlagFunction* get_formatflag_tu1(std::string);
+extern FormatFlagFunction* get_formatflag_tu2(std::string);
+
+extern OstreamManipFunction* get_ostreammanip_tu1(std::string);
+extern OstreamManipFunction* get_ostreammanip_tu2(std::string);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+extern WOstreamManipFunction* get_wostreammanip_tu1(std::string);
+extern WOstreamManipFunction* get_wostreammanip_tu2(std::string);
+#endif
+
+extern IstreamManipFunction* get_istreammanip_tu1(std::string);
+extern IstreamManipFunction* get_istreammanip_tu2(std::string);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+extern WIstreamManipFunction* get_wistreammanip_tu1(std::string);
+extern WIstreamManipFunction* get_wistreammanip_tu2(std::string);
+#endif
+
+#ifdef TU1
+FormatFlagFunction* get_formatflag_tu1(std::string func)
+#else
+FormatFlagFunction* get_formatflag_tu2(std::string func)
+#endif
+{
+    std::map<std::string, FormatFlagFunction*> all_funcs;
+
+    // [fmtflags.manip]
+    all_funcs.insert(std::make_pair("boolalpha", &std::boolalpha));
+    all_funcs.insert(std::make_pair("noboolalpha", &std::noboolalpha));
+    all_funcs.insert(std::make_pair("showbase", &std::showbase));
+    all_funcs.insert(std::make_pair("noshowbase", &std::noshowbase));
+    all_funcs.insert(std::make_pair("showpoint", &std::showpoint));
+    all_funcs.insert(std::make_pair("noshowpoint", &std::noshowpoint));
+    all_funcs.insert(std::make_pair("showpos", &std::showpos));
+    all_funcs.insert(std::make_pair("noshowpos", &std::noshowpos));
+    all_funcs.insert(std::make_pair("skipws", &std::skipws));
+    all_funcs.insert(std::make_pair("noskipws", &std::noskipws));
+    all_funcs.insert(std::make_pair("uppercase", &std::uppercase));
+    all_funcs.insert(std::make_pair("nouppercase", &std::nouppercase));
+    all_funcs.insert(std::make_pair("unitbuf", &std::unitbuf));
+    all_funcs.insert(std::make_pair("nounitbuf", &std::nounitbuf));
+
+    // [adjustfield.manip]
+    all_funcs.insert(std::make_pair("internal", &std::internal));
+    all_funcs.insert(std::make_pair("left", &std::left));
+    all_funcs.insert(std::make_pair("right", &std::right));
+
+    // [basefield.manip]
+    all_funcs.insert(std::make_pair("dec", &std::dec));
+    all_funcs.insert(std::make_pair("hex", &std::hex));
+    all_funcs.insert(std::make_pair("oct", &std::oct));
+
+    // [floatfield.manip]
+    all_funcs.insert(std::make_pair("fixed", &std::fixed));
+    all_funcs.insert(std::make_pair("scientific", &std::scientific));
+    all_funcs.insert(std::make_pair("hexfloat", &std::hexfloat));
+    all_funcs.insert(std::make_pair("defaultfloat", &std::defaultfloat));
+
+    return all_funcs.at(func);
+}
+
+// [ostream.manip] (char)
+#ifdef TU1
+OstreamManipFunction* get_ostreammanip_tu1(std::string func)
+#else
+OstreamManipFunction* get_ostreammanip_tu2(std::string func)
+#endif
+{
+    std::map<std::string, OstreamManipFunction*> all_funcs;
+    typedef std::char_traits<char> Traits;
+    all_funcs.insert(std::make_pair("endl", &std::endl<char, Traits>));
+    all_funcs.insert(std::make_pair("ends", &std::ends<char, Traits>));
+    all_funcs.insert(std::make_pair("flush", &std::flush<char, Traits>));
+    return all_funcs.at(func);
+}
+
+// [ostream.manip] (wchar_t)
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   ifdef TU1
+WOstreamManipFunction* get_wostreammanip_tu1(std::string func)
+#   else
+WOstreamManipFunction* get_wostreammanip_tu2(std::string func)
+#   endif
+{
+    std::map<std::string, WOstreamManipFunction*> all_funcs;
+    typedef std::char_traits<wchar_t> Traits;
+    all_funcs.insert(std::make_pair("endl", &std::endl<wchar_t, Traits>));
+    all_funcs.insert(std::make_pair("ends", &std::ends<wchar_t, Traits>));
+    all_funcs.insert(std::make_pair("flush", &std::flush<wchar_t, Traits>));
+    return all_funcs.at(func);
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+// [istream.manip] (char)
+#ifdef TU1
+IstreamManipFunction* get_istreammanip_tu1(std::string func)
+#else
+IstreamManipFunction* get_istreammanip_tu2(std::string func)
+#endif
+{
+    std::map<std::string, IstreamManipFunction*> all_funcs;
+    typedef std::char_traits<char> Traits;
+    all_funcs.insert(std::make_pair("ws", &std::ws<char, Traits>));
+    return all_funcs.at(func);
+}
+
+// [istream.manip] (wchar_t)
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#   ifdef TU1
+WIstreamManipFunction* get_wistreammanip_tu1(std::string func)
+#   else
+WIstreamManipFunction* get_wistreammanip_tu2(std::string func)
+#   endif
+{
+    std::map<std::string, WIstreamManipFunction*> all_funcs;
+    typedef std::char_traits<wchar_t> Traits;
+    all_funcs.insert(std::make_pair("ws", &std::ws<wchar_t, Traits>));
+    return all_funcs.at(func);
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+#ifdef TU2
+    int main(int, char**) {
+        assert(get_formatflag_tu1("boolalpha") == get_formatflag_tu2("boolalpha"));
+        assert(get_formatflag_tu1("noboolalpha") == get_formatflag_tu2("noboolalpha"));
+        assert(get_formatflag_tu1("showbase") == get_formatflag_tu2("showbase"));
+        assert(get_formatflag_tu1("noshowbase") == get_formatflag_tu2("noshowbase"));
+        assert(get_formatflag_tu1("showpoint") == get_formatflag_tu2("showpoint"));
+        assert(get_formatflag_tu1("noshowpoint") == get_formatflag_tu2("noshowpoint"));
+        assert(get_formatflag_tu1("showpos") == get_formatflag_tu2("showpos"));
+        assert(get_formatflag_tu1("noshowpos") == get_formatflag_tu2("noshowpos"));
+        assert(get_formatflag_tu1("skipws") == get_formatflag_tu2("skipws"));
+        assert(get_formatflag_tu1("noskipws") == get_formatflag_tu2("noskipws"));
+        assert(get_formatflag_tu1("uppercase") == get_formatflag_tu2("uppercase"));
+        assert(get_formatflag_tu1("nouppercase") == get_formatflag_tu2("nouppercase"));
+        assert(get_formatflag_tu1("unitbuf") == get_formatflag_tu2("unitbuf"));
+        assert(get_formatflag_tu1("nounitbuf") == get_formatflag_tu2("nounitbuf"));
+        assert(get_formatflag_tu1("internal") == get_formatflag_tu2("internal"));
+        assert(get_formatflag_tu1("left") == get_formatflag_tu2("left"));
+        assert(get_formatflag_tu1("right") == get_formatflag_tu2("right"));
+        assert(get_formatflag_tu1("dec") == get_formatflag_tu2("dec"));
+        assert(get_formatflag_tu1("hex") == get_formatflag_tu2("hex"));
+        assert(get_formatflag_tu1("oct") == get_formatflag_tu2("oct"));
+        assert(get_formatflag_tu1("fixed") == get_formatflag_tu2("fixed"));
+        assert(get_formatflag_tu1("scientific") == get_formatflag_tu2("scientific"));
+        assert(get_formatflag_tu1("hexfloat") == get_formatflag_tu2("hexfloat"));
+        assert(get_formatflag_tu1("defaultfloat") == get_formatflag_tu2("defaultfloat"));
+
+        assert(get_ostreammanip_tu1("endl") == get_ostreammanip_tu2("endl"));
+        assert(get_ostreammanip_tu1("ends") == get_ostreammanip_tu2("ends"));
+        assert(get_ostreammanip_tu1("flush") == get_ostreammanip_tu2("flush"));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        assert(get_wostreammanip_tu1("endl") == get_wostreammanip_tu2("endl"));
+        assert(get_wostreammanip_tu1("ends") == get_wostreammanip_tu2("ends"));
+        assert(get_wostreammanip_tu1("flush") == get_wostreammanip_tu2("flush"));
+#endif
+
+        assert(get_istreammanip_tu1("ws") == get_istreammanip_tu2("ws"));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        assert(get_wistreammanip_tu1("ws") == get_wistreammanip_tu2("ws"));
+#endif
+
+        return 0;
+    }
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.cast/bit_cast.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.cast/bit_cast.compile.pass.cpp
new file mode 100644
index 0000000..0ed2b22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.cast/bit_cast.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <bit>
+//
+// template<class To, class From>
+//   constexpr To bit_cast(const From& from) noexcept; // C++20
+
+// This test makes sure that std::bit_cast fails when any of the following
+// constraints are violated:
+//
+//      (1.1) sizeof(To) == sizeof(From) is true;
+//      (1.2) is_trivially_copyable_v<To> is true;
+//      (1.3) is_trivially_copyable_v<From> is true.
+//
+// Also check that it's ill-formed when the return type would be
+// ill-formed, even though that is not explicitly mentioned in the
+// specification (but it can be inferred from the synopsis).
+
+#include <bit>
+#include <concepts>
+
+template<class To, class From>
+concept bit_cast_is_valid = requires(From from) {
+    { std::bit_cast<To>(from) } -> std::same_as<To>;
+};
+
+// Types are not the same size
+namespace ns1 {
+    struct To { char a; };
+    struct From { char a; char b; };
+    static_assert(!bit_cast_is_valid<To, From>);
+    static_assert(!bit_cast_is_valid<From&, From>);
+}
+
+// To is not trivially copyable
+namespace ns2 {
+    struct To { char a; To(To const&); };
+    struct From { char a; };
+    static_assert(!bit_cast_is_valid<To, From>);
+}
+
+// From is not trivially copyable
+namespace ns3 {
+    struct To { char a; };
+    struct From { char a; From(From const&); };
+    static_assert(!bit_cast_is_valid<To, From>);
+}
+
+// The return type is ill-formed
+namespace ns4 {
+    struct From { char a; char b; };
+    static_assert(!bit_cast_is_valid<char[2], From>);
+    static_assert(!bit_cast_is_valid<int(), From>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.cast/bit_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.cast/bit_cast.pass.cpp
new file mode 100644
index 0000000..fe1e306
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.cast/bit_cast.pass.cpp
@@ -0,0 +1,260 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <bit>
+//
+// template<class To, class From>
+//   constexpr To bit_cast(const From& from) noexcept; // C++20
+
+#include <array>
+#include <bit>
+#include <cassert>
+#include <cmath>
+#include <cstdint>
+#include <cstring>
+#include <limits>
+
+#include "test_macros.h"
+
+// std::bit_cast does not preserve padding bits, so if T has padding bits,
+// the results might not memcmp cleanly.
+template<bool HasUniqueObjectRepresentations = true, typename T>
+void test_roundtrip_through_buffer(T from) {
+    struct Buffer { char buffer[sizeof(T)]; };
+    Buffer middle = std::bit_cast<Buffer>(from);
+    T to = std::bit_cast<T>(middle);
+    Buffer middle2 = std::bit_cast<Buffer>(to);
+
+    assert((from == to) == (from == from)); // because NaN
+
+    if constexpr (HasUniqueObjectRepresentations) {
+        assert(std::memcmp(&from, &middle, sizeof(T)) == 0);
+        assert(std::memcmp(&to, &middle, sizeof(T)) == 0);
+        assert(std::memcmp(&middle, &middle2, sizeof(T)) == 0);
+    }
+}
+
+template<bool HasUniqueObjectRepresentations = true, typename T>
+void test_roundtrip_through_nested_T(T from) {
+    struct Nested { T x; };
+    static_assert(sizeof(Nested) == sizeof(T));
+
+    Nested middle = std::bit_cast<Nested>(from);
+    T to = std::bit_cast<T>(middle);
+    Nested middle2 = std::bit_cast<Nested>(to);
+
+    assert((from == to) == (from == from)); // because NaN
+
+    if constexpr (HasUniqueObjectRepresentations) {
+        assert(std::memcmp(&from, &middle, sizeof(T)) == 0);
+        assert(std::memcmp(&to, &middle, sizeof(T)) == 0);
+        assert(std::memcmp(&middle, &middle2, sizeof(T)) == 0);
+    }
+}
+
+template <typename Intermediate, bool HasUniqueObjectRepresentations = true, typename T>
+void test_roundtrip_through(T from) {
+    static_assert(sizeof(Intermediate) == sizeof(T));
+
+    Intermediate middle = std::bit_cast<Intermediate>(from);
+    T to = std::bit_cast<T>(middle);
+    Intermediate middle2 = std::bit_cast<Intermediate>(to);
+
+    assert((from == to) == (from == from)); // because NaN
+
+    if constexpr (HasUniqueObjectRepresentations) {
+        assert(std::memcmp(&from, &middle, sizeof(T)) == 0);
+        assert(std::memcmp(&to, &middle, sizeof(T)) == 0);
+        assert(std::memcmp(&middle, &middle2, sizeof(T)) == 0);
+    }
+}
+
+template <typename T>
+constexpr std::array<T, 10> generate_signed_integral_values() {
+    return {std::numeric_limits<T>::min(),
+            std::numeric_limits<T>::min() + 1,
+            static_cast<T>(-2), static_cast<T>(-1),
+            static_cast<T>(0), static_cast<T>(1),
+            static_cast<T>(2), static_cast<T>(3),
+            std::numeric_limits<T>::max() - 1,
+            std::numeric_limits<T>::max()};
+}
+
+template <typename T>
+constexpr std::array<T, 6> generate_unsigned_integral_values() {
+    return {static_cast<T>(0), static_cast<T>(1),
+            static_cast<T>(2), static_cast<T>(3),
+            std::numeric_limits<T>::max() - 1,
+            std::numeric_limits<T>::max()};
+}
+
+bool tests() {
+    for (bool b : {false, true}) {
+        test_roundtrip_through_nested_T(b);
+        test_roundtrip_through_buffer(b);
+        test_roundtrip_through<char>(b);
+    }
+
+    for (char c : {'\0', 'a', 'b', 'c', 'd'}) {
+        test_roundtrip_through_nested_T(c);
+        test_roundtrip_through_buffer(c);
+    }
+
+    // Fundamental signed integer types
+    for (signed char i : generate_signed_integral_values<signed char>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+    }
+
+    for (short i : generate_signed_integral_values<short>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+    }
+
+    for (int i : generate_signed_integral_values<int>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<float>(i);
+    }
+
+    for (long i : generate_signed_integral_values<long>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+    }
+
+    for (long long i : generate_signed_integral_values<long long>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<double>(i);
+    }
+
+    // Fundamental unsigned integer types
+    for (unsigned char i : generate_unsigned_integral_values<unsigned char>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+    }
+
+    for (unsigned short i : generate_unsigned_integral_values<unsigned short>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+    }
+
+    for (unsigned int i : generate_unsigned_integral_values<unsigned int>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<float>(i);
+    }
+
+    for (unsigned long i : generate_unsigned_integral_values<unsigned long>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+    }
+
+    for (unsigned long long i : generate_unsigned_integral_values<unsigned long long>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<double>(i);
+    }
+
+    // Fixed width signed integer types
+    for (std::int32_t i : generate_signed_integral_values<std::int32_t>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<int>(i);
+        test_roundtrip_through<std::uint32_t>(i);
+        test_roundtrip_through<float>(i);
+    }
+
+    for (std::int64_t i : generate_signed_integral_values<std::int64_t>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<long long>(i);
+        test_roundtrip_through<std::uint64_t>(i);
+        test_roundtrip_through<double>(i);
+    }
+
+    // Fixed width unsigned integer types
+    for (std::uint32_t i : generate_unsigned_integral_values<std::uint32_t>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<int>(i);
+        test_roundtrip_through<std::int32_t>(i);
+        test_roundtrip_through<float>(i);
+    }
+
+    for (std::uint64_t i : generate_unsigned_integral_values<std::uint64_t>()) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<long long>(i);
+        test_roundtrip_through<std::int64_t>(i);
+        test_roundtrip_through<double>(i);
+    }
+
+    // Floating point types
+    for (float i : {0.0f, 1.0f, -1.0f, 10.0f, -10.0f, 1e10f, 1e-10f, 1e20f, 1e-20f, 2.71828f, 3.14159f,
+                    std::nanf(""),
+                    __builtin_nanf("0x55550001"), // NaN with a payload
+                    std::numeric_limits<float>::signaling_NaN(),
+                    std::numeric_limits<float>::quiet_NaN()}) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<int>(i);
+    }
+
+    for (double i : {0.0, 1.0, -1.0, 10.0, -10.0, 1e10, 1e-10, 1e100, 1e-100,
+                     2.718281828459045,
+                     3.141592653589793238462643383279502884197169399375105820974944,
+                     std::nan(""),
+                     std::numeric_limits<double>::signaling_NaN(),
+                     std::numeric_limits<double>::quiet_NaN()}) {
+        test_roundtrip_through_nested_T(i);
+        test_roundtrip_through_buffer(i);
+        test_roundtrip_through<long long>(i);
+    }
+
+    for (long double i : {0.0l, 1.0l, -1.0l, 10.0l, -10.0l, 1e10l, 1e-10l, 1e100l, 1e-100l,
+                          2.718281828459045l,
+                          3.141592653589793238462643383279502884197169399375105820974944l,
+                          std::nanl(""),
+                          std::numeric_limits<long double>::signaling_NaN(),
+                          std::numeric_limits<long double>::quiet_NaN()}) {
+        // Note that x86's `long double` has 80 value bits and 48 padding bits.
+        test_roundtrip_through_nested_T<false>(i);
+        test_roundtrip_through_buffer<false>(i);
+
+#if __SIZEOF_LONG_DOUBLE__ == __SIZEOF_DOUBLE__
+        test_roundtrip_through<double, false>(i);
+#endif
+#if defined(__SIZEOF_INT128__) && __SIZEOF_LONG_DOUBLE__ == __SIZEOF_INT128__ &&                                       \
+    !TEST_HAS_FEATURE(memory_sanitizer) // Some bits are just padding.
+        test_roundtrip_through<__int128_t, false>(i);
+        test_roundtrip_through<__uint128_t, false>(i);
+#endif
+    }
+
+    return true;
+}
+
+// TODO: There doesn't seem to be a way to perform non-trivial correctness
+//       tests inside constexpr.
+constexpr bool basic_constexpr_test() {
+    struct Nested { char buffer[sizeof(int)]; };
+    int from = 3;
+    Nested middle = std::bit_cast<Nested>(from);
+    int to = std::bit_cast<int>(middle);
+    assert(from == to);
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+    static_assert(basic_constexpr_test());
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.endian/endian.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.endian/endian.pass.cpp
new file mode 100644
index 0000000..ecba960
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.endian/endian.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// enum class endian;
+// <bit>
+
+#include <bit>
+#include <cstring>
+#include <cassert>
+#include <cstdint>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    static_assert(std::is_enum<std::endian>::value, "");
+
+// Check that E is a scoped enum by checking for conversions.
+    typedef std::underlying_type<std::endian>::type UT;
+    static_assert(!std::is_convertible<std::endian, UT>::value, "");
+
+// test that the enumeration values exist
+    static_assert( std::endian::little == std::endian::little );
+    static_assert( std::endian::big    == std::endian::big );
+    static_assert( std::endian::native == std::endian::native );
+    static_assert( std::endian::little != std::endian::big );
+
+//  Technically not required, but true on all existing machines
+    static_assert( std::endian::native == std::endian::little ||
+                   std::endian::native == std::endian::big );
+
+//  Try to check at runtime
+    {
+    uint32_t i = 0x01020304;
+    char c[4];
+    static_assert(sizeof(i) == sizeof(c));
+    std::memcpy(c, &i, sizeof(c));
+
+    assert ((c[0] == 1) == (std::endian::native == std::endian::big));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_ceil.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_ceil.fail.cpp
new file mode 100644
index 0000000..fab7d78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_ceil.fail.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr T bit_ceil(T x) noexcept;
+
+// Remarks: This function shall not participate in overload resolution unless
+//          T is an unsigned integer type
+
+#include <bit>
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <limits>
+
+class A{};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <typename T>
+constexpr bool toobig()
+{
+    return 0 == std::bit_ceil(std::numeric_limits<T>::max());
+}
+
+int main(int, char**)
+{
+    // Make sure we generate a compile-time error for UB
+    static_assert(toobig<unsigned char>(),      ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<unsigned short>(),     ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<unsigned>(),           ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<unsigned long>(),      ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<unsigned long long>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+
+    static_assert(toobig<uint8_t>(), "");   // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<uint16_t>(), "");  // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<uint32_t>(), "");  // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<uint64_t>(), "");  // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<size_t>(), "");    // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<uintmax_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    static_assert(toobig<uintptr_t>(), ""); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_ceil.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_ceil.pass.cpp
new file mode 100644
index 0000000..f18d52a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_ceil.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr T bit_ceil(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: The minimal value y such that has_single_bit(y) is true and y >= x;
+//    if y is not representable as a value of type T, the result is an unspecified value.
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::bit_ceil(T())), T);
+    LIBCPP_ASSERT_NOEXCEPT(std::bit_ceil(T()));
+
+    assert(std::bit_ceil(T(0)) == T(1));
+    assert(std::bit_ceil(T(1)) == T(1));
+    assert(std::bit_ceil(T(2)) == T(2));
+    assert(std::bit_ceil(T(3)) == T(4));
+    assert(std::bit_ceil(T(4)) == T(4));
+    assert(std::bit_ceil(T(5)) == T(8));
+    assert(std::bit_ceil(T(6)) == T(8));
+    assert(std::bit_ceil(T(7)) == T(8));
+    assert(std::bit_ceil(T(8)) == T(8));
+    assert(std::bit_ceil(T(9)) == T(16));
+    assert(std::bit_ceil(T(60)) == T(64));
+    assert(std::bit_ceil(T(61)) == T(64));
+    assert(std::bit_ceil(T(62)) == T(64));
+    assert(std::bit_ceil(T(63)) == T(64));
+    assert(std::bit_ceil(T(64)) == T(64));
+    assert(std::bit_ceil(T(65)) == T(128));
+    assert(std::bit_ceil(T(66)) == T(128));
+    assert(std::bit_ceil(T(67)) == T(128));
+    assert(std::bit_ceil(T(68)) == T(128));
+    assert(std::bit_ceil(T(69)) == T(128));
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = 168;
+        T ceil = 256;
+
+        assert(std::bit_ceil(val) == ceil);
+        assert(std::bit_ceil(val << 32) == (ceil << 32));
+        assert(std::bit_ceil((val << 64) | 0x1) == (ceil << 64));
+        assert(std::bit_ceil((val << 72) | 0x1) == (ceil << 72));
+        assert(std::bit_ceil((val << 100) | 0x1) == (ceil << 100));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::bit_ceil(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_floor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_floor.pass.cpp
new file mode 100644
index 0000000..f843fff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_floor.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr T bit_floor(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: If x == 0, 0; otherwise the maximal value y such that bit_floor(y) is true and y <= x.
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::bit_floor(T())), T);
+    LIBCPP_ASSERT_NOEXCEPT(std::bit_floor(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::bit_floor(T(0)) == T(0));
+    assert(std::bit_floor(T(1)) == T(1));
+    assert(std::bit_floor(T(2)) == T(2));
+    assert(std::bit_floor(T(3)) == T(2));
+    assert(std::bit_floor(T(4)) == T(4));
+    assert(std::bit_floor(T(5)) == T(4));
+    assert(std::bit_floor(T(6)) == T(4));
+    assert(std::bit_floor(T(7)) == T(4));
+    assert(std::bit_floor(T(8)) == T(8));
+    assert(std::bit_floor(T(9)) == T(8));
+    assert(std::bit_floor(T(125)) == T(64));
+    assert(std::bit_floor(T(126)) == T(64));
+    assert(std::bit_floor(T(127)) == T(64));
+    assert(std::bit_floor(T(128)) == T(128));
+    assert(std::bit_floor(T(129)) == T(128));
+    assert(std::bit_floor(max) == T(max - (max >> 1)));
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = T(128) << 32;
+        assert(std::bit_floor(val-1) == val/2);
+        assert(std::bit_floor(val)   == val);
+        assert(std::bit_floor(val+1) == val);
+        val <<= 60;
+        assert(std::bit_floor(val-1) == val/2);
+        assert(std::bit_floor(val)   == val);
+        assert(std::bit_floor(val+1) == val);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::bit_floor(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_width.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_width.pass.cpp
new file mode 100644
index 0000000..23aad27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/bit_width.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int bit_width(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: If x == 0, 0; otherwise one plus the base-2 logarithm of x, with any fractional part discarded.
+
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::bit_width(T())), int);
+    ASSERT_NOEXCEPT(std::bit_width(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::bit_width(T(0)) == 0);
+    assert(std::bit_width(T(1)) == 1);
+    assert(std::bit_width(T(2)) == 2);
+    assert(std::bit_width(T(3)) == 2);
+    assert(std::bit_width(T(4)) == 3);
+    assert(std::bit_width(T(5)) == 3);
+    assert(std::bit_width(T(6)) == 3);
+    assert(std::bit_width(T(7)) == 3);
+    assert(std::bit_width(T(8)) == 4);
+    assert(std::bit_width(T(9)) == 4);
+    assert(std::bit_width(T(125)) == 7);
+    assert(std::bit_width(T(126)) == 7);
+    assert(std::bit_width(T(127)) == 7);
+    assert(std::bit_width(T(128)) == 8);
+    assert(std::bit_width(T(129)) == 8);
+    assert(std::bit_width(T(130)) == 8);
+    assert(std::bit_width(T(max - 1)) == std::numeric_limits<T>::digits);
+    assert(std::bit_width(max) == std::numeric_limits<T>::digits);
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = 128;
+        val <<= 32;
+        assert(std::bit_width(val-1) == 39);
+        assert(std::bit_width(val)   == 40);
+        assert(std::bit_width(val+1) == 40);
+        val <<= 60;
+        assert(std::bit_width(val-1) == 99);
+        assert(std::bit_width(val)   == 100);
+        assert(std::bit_width(val+1) == 100);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+
+    {
+    auto lambda = [](auto x) -> decltype(std::bit_width(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/has_single_bit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/has_single_bit.pass.cpp
new file mode 100644
index 0000000..1a20a4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bit.pow.two/has_single_bit.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr bool has_single_bit(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::has_single_bit(T())), bool);
+    ASSERT_NOEXCEPT(std::has_single_bit(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(!std::has_single_bit(T(0)));
+    assert( std::has_single_bit(T(1)));
+    assert( std::has_single_bit(T(2)));
+    assert(!std::has_single_bit(T(3)));
+    assert( std::has_single_bit(T(4)));
+    assert(!std::has_single_bit(T(5)));
+    assert(!std::has_single_bit(T(6)));
+    assert(!std::has_single_bit(T(7)));
+    assert( std::has_single_bit(T(8)));
+    assert(!std::has_single_bit(T(9)));
+    assert(!std::has_single_bit(T(127)));
+    assert( std::has_single_bit(T(128)));
+    assert(!std::has_single_bit(T(129)));
+    assert(!std::has_single_bit(max));
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = T(1) << 32;
+        assert(!std::has_single_bit(val-1));
+        assert( std::has_single_bit(val));
+        assert(!std::has_single_bit(val+1));
+        val <<= 60;
+        assert(!std::has_single_bit(val-1));
+        assert( std::has_single_bit(val));
+        assert(!std::has_single_bit(val+1));
+
+        T x = (T(1) << 63);
+        T y = (T(1) << 64);
+        assert( std::has_single_bit(x));
+        assert( std::has_single_bit(y));
+        assert(!std::has_single_bit(x + y));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::has_single_bit(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countl_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countl_one.pass.cpp
new file mode 100644
index 0000000..ab82d03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countl_one.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int countl_one(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// The number of consecutive 1 bits, starting from the most significant bit.
+//   [ Note: Returns N if x == std::numeric_limits<T>::max(). ]
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::countl_one(T())), int);
+    ASSERT_NOEXCEPT(std::countl_one(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::countl_one(T(0)) == 0);
+    assert(std::countl_one(T(1)) == 0);
+    assert(std::countl_one(T(10)) == 0);
+    assert(std::countl_one(T(100)) == 0);
+    assert(std::countl_one(max) == std::numeric_limits<T>::digits);
+    assert(std::countl_one(T(max - 1)) == std::numeric_limits<T>::digits - 1);
+    assert(std::countl_one(T(max - 2)) == std::numeric_limits<T>::digits - 2);
+    assert(std::countl_one(T(max - 3)) == std::numeric_limits<T>::digits - 2);
+    assert(std::countl_one(T(max - 4)) == std::numeric_limits<T>::digits - 3);
+    assert(std::countl_one(T(max - 5)) == std::numeric_limits<T>::digits - 3);
+    assert(std::countl_one(T(max - 6)) == std::numeric_limits<T>::digits - 3);
+    assert(std::countl_one(T(max - 7)) == std::numeric_limits<T>::digits - 3);
+    assert(std::countl_one(T(max - 8)) == std::numeric_limits<T>::digits - 4);
+    assert(std::countl_one(T(max - 9)) == std::numeric_limits<T>::digits - 4);
+    assert(std::countl_one(T(max - 126)) == std::numeric_limits<T>::digits - 7);
+    assert(std::countl_one(T(max - 127)) == std::numeric_limits<T>::digits - 7);
+    assert(std::countl_one(T(max - 128)) == std::numeric_limits<T>::digits - 8);
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = 128;
+        assert(std::countl_one(~val) == 120);
+        val <<= 32;
+        assert(std::countl_one(~val) == 88);
+        val <<= 60;
+        assert(std::countl_one(~val) == 28);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::countl_one(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countl_zero.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countl_zero.pass.cpp
new file mode 100644
index 0000000..2a23e9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countl_zero.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int countl_zero(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: The number of consecutive 0 bits, starting from the most significant bit.
+//   [ Note: Returns N if x == 0. ]
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::countl_zero(T())), int);
+    ASSERT_NOEXCEPT(std::countl_zero(T()));
+    T max = std::numeric_limits<T>::max();
+    int dig = std::numeric_limits<T>::digits;
+
+    assert(std::countl_zero(T(0)) == dig);
+    assert(std::countl_zero(T(1)) == dig - 1);
+    assert(std::countl_zero(T(2)) == dig - 2);
+    assert(std::countl_zero(T(3)) == dig - 2);
+    assert(std::countl_zero(T(4)) == dig - 3);
+    assert(std::countl_zero(T(5)) == dig - 3);
+    assert(std::countl_zero(T(6)) == dig - 3);
+    assert(std::countl_zero(T(7)) == dig - 3);
+    assert(std::countl_zero(T(8)) == dig - 4);
+    assert(std::countl_zero(T(9)) == dig - 4);
+    assert(std::countl_zero(T(127)) == dig - 7);
+    assert(std::countl_zero(T(128)) == dig - 8);
+    assert(std::countl_zero(max) == 0);
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = T(128) << 32;
+        assert(std::countl_zero(val-1) == 89);
+        assert(std::countl_zero(val)   == 88);
+        assert(std::countl_zero(val+1) == 88);
+        val <<= 60;
+        assert(std::countl_zero(val-1) == 29);
+        assert(std::countl_zero(val)   == 28);
+        assert(std::countl_zero(val+1) == 28);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::countl_zero(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countr_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countr_one.pass.cpp
new file mode 100644
index 0000000..467d034
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countr_one.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int countr_one(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: The number of consecutive 1 bits, starting from the least significant bit.
+//   [ Note: Returns N if x == std::numeric_limits<T>::max(). ]
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::countr_one(T())), int);
+    ASSERT_NOEXCEPT(std::countr_one(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::countr_one(T(0)) == 0);
+    assert(std::countr_one(T(1)) == 1);
+    assert(std::countr_one(T(2)) == 0);
+    assert(std::countr_one(T(3)) == 2);
+    assert(std::countr_one(T(4)) == 0);
+    assert(std::countr_one(T(5)) == 1);
+    assert(std::countr_one(T(6)) == 0);
+    assert(std::countr_one(T(7)) == 3);
+    assert(std::countr_one(T(8)) == 0);
+    assert(std::countr_one(T(9)) == 1);
+    assert(std::countr_one(T(126)) == 0);
+    assert(std::countr_one(T(127)) == 7);
+    assert(std::countr_one(T(128)) == 0);
+    assert(std::countr_one(T(max - 1)) == 0);
+    assert(std::countr_one(max) == std::numeric_limits<T>::digits);
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = 128;
+        assert(std::countr_one(val-1) ==  7);
+        assert(std::countr_one(val)   ==  0);
+        assert(std::countr_one(val+1) ==  1);
+        val <<= 32;
+        assert(std::countr_one(val-1) == 39);
+        assert(std::countr_one(val)   ==  0);
+        assert(std::countr_one(val+1) ==  1);
+        val <<= 60;
+        assert(std::countr_one(val-1) == 99);
+        assert(std::countr_one(val)   ==  0);
+        assert(std::countr_one(val+1) ==  1);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::countr_one(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countr_zero.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countr_zero.pass.cpp
new file mode 100644
index 0000000..149ca27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/countr_zero.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int countr_zero(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: The number of consecutive 0 bits, starting from the most significant bit.
+//   [ Note: Returns N if x == 0. ]
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::countr_zero(T())), int);
+    ASSERT_NOEXCEPT(std::countr_zero(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::countr_zero(T(0)) == std::numeric_limits<T>::digits);
+    assert(std::countr_zero(T(1)) == 0);
+    assert(std::countr_zero(T(2)) == 1);
+    assert(std::countr_zero(T(3)) == 0);
+    assert(std::countr_zero(T(4)) == 2);
+    assert(std::countr_zero(T(5)) == 0);
+    assert(std::countr_zero(T(6)) == 1);
+    assert(std::countr_zero(T(7)) == 0);
+    assert(std::countr_zero(T(8)) == 3);
+    assert(std::countr_zero(T(9)) == 0);
+    assert(std::countr_zero(T(126)) == 1);
+    assert(std::countr_zero(T(127)) == 0);
+    assert(std::countr_zero(T(128)) == 7);
+    assert(std::countr_zero(T(129)) == 0);
+    assert(std::countr_zero(T(130)) == 1);
+    assert(std::countr_zero(max) == 0);
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = T(128) << 32;
+        assert(std::countr_zero(val-1) ==  0);
+        assert(std::countr_zero(val)   == 39);
+        assert(std::countr_zero(val+1) ==  0);
+        val <<= 60;
+        assert(std::countr_zero(val-1) ==  0);
+        assert(std::countr_zero(val)   == 99);
+        assert(std::countr_zero(val+1) ==  0);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::countr_zero(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/popcount.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/popcount.pass.cpp
new file mode 100644
index 0000000..96c5fd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.count/popcount.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int popcount(T x) noexcept;
+
+// Constraints: T is an unsigned integer type
+// Returns: The number of bits set to one in the value of x.
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::popcount(T())), int);
+    ASSERT_NOEXCEPT(std::popcount(T()));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::popcount(T(0)) == 0);
+    assert(std::popcount(T(1)) == 1);
+    assert(std::popcount(T(2)) == 1);
+    assert(std::popcount(T(3)) == 2);
+    assert(std::popcount(T(4)) == 1);
+    assert(std::popcount(T(5)) == 2);
+    assert(std::popcount(T(6)) == 2);
+    assert(std::popcount(T(7)) == 3);
+    assert(std::popcount(T(8)) == 1);
+    assert(std::popcount(T(9)) == 2);
+    assert(std::popcount(T(121)) == 5);
+    assert(std::popcount(T(127)) == 7);
+    assert(std::popcount(T(128)) == 1);
+    assert(std::popcount(T(130)) == 2);
+    assert(std::popcount(T(max >> 1)) == std::numeric_limits<T>::digits - 1);
+    assert(std::popcount(T(max - 1)) == std::numeric_limits<T>::digits - 1);
+    assert(std::popcount(max) == std::numeric_limits<T>::digits);
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = 128;
+        assert(std::popcount(val-1) ==  7);
+        assert(std::popcount(val)   ==  1);
+        assert(std::popcount(val+1) ==  2);
+        val <<= 32;
+        assert(std::popcount(val-1) == 39);
+        assert(std::popcount(val)   ==  1);
+        assert(std::popcount(val+1) ==  2);
+        val <<= 60;
+        assert(std::popcount(val-1) == 99);
+        assert(std::popcount(val)   ==  1);
+        assert(std::popcount(val+1) ==  2);
+
+        T x = T(1) << 63;
+        T y = T(1) << 64;
+        assert(std::popcount(x) == 1);
+        assert(std::popcount(y) == 1);
+        assert(std::popcount(x+y) == 2);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::popcount(x)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.rot/rotl.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.rot/rotl.pass.cpp
new file mode 100644
index 0000000..e82388d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.rot/rotl.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int rotl(T x, unsigned int s) noexcept;
+
+// Constraints: T is an unsigned integer type
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::rotl(T(), 0)), T);
+    ASSERT_NOEXCEPT(std::rotl(T(), 0));
+    T max = std::numeric_limits<T>::max();
+
+    assert(std::rotl(T(max - 1), 0) == T(max - 1));
+    assert(std::rotl(T(max - 1), 1) == T(max - 2));
+    assert(std::rotl(T(max - 1), 2) == T(max - 4));
+    assert(std::rotl(T(max - 1), 3) == T(max - 8));
+    assert(std::rotl(T(max - 1), 4) == T(max - 16));
+    assert(std::rotl(T(max - 1), 5) == T(max - 32));
+    assert(std::rotl(T(max - 1), 6) == T(max - 64));
+    assert(std::rotl(T(max - 1), 7) == T(max - 128));
+
+    assert(std::rotl(T(1), 0) == T(1));
+    assert(std::rotl(T(1), 1) == T(2));
+    assert(std::rotl(T(1), 2) == T(4));
+    assert(std::rotl(T(1), 3) == T(8));
+    assert(std::rotl(T(1), 4) == T(16));
+    assert(std::rotl(T(1), 5) == T(32));
+    assert(std::rotl(T(1), 6) == T(64));
+    assert(std::rotl(T(1), 7) == T(128));
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = (T(1) << 63) | (T(1) << 64);
+        assert(std::rotl(val, 0) == val);
+        assert(std::rotl(val, 128) == val);
+        assert(std::rotl(val, 256) == val);
+        assert(std::rotl(val, 1) == val << 1);
+        assert(std::rotl(val, 127) == val >> 1);
+        assert(std::rotl(T(3), 127) == ((T(1) << 127) | T(1)));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::rotl(x, 1U)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.rot/rotr.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.rot/rotr.pass.cpp
new file mode 100644
index 0000000..0545874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/bitops.rot/rotr.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+//   constexpr int rotr(T x, unsigned int s) noexcept;
+
+// Constraints: T is an unsigned integer type
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+enum       E1 : unsigned char { rEd };
+enum class E2 : unsigned char { red };
+
+template <class T>
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::rotr(T(), 0)), T);
+    ASSERT_NOEXCEPT(std::rotr(T(), 0));
+    T max = std::numeric_limits<T>::max();
+    T highbit = std::rotr(T(1), 1);
+
+    assert(std::rotr(T(max - 1), 0) == T(max - 1));
+    assert(std::rotr(T(max - 1), 1) == T(max - highbit));
+    assert(std::rotr(T(max - 1), 2) == T(max - (highbit >> 1)));
+    assert(std::rotr(T(max - 1), 3) == T(max - (highbit >> 2)));
+    assert(std::rotr(T(max - 1), 4) == T(max - (highbit >> 3)));
+    assert(std::rotr(T(max - 1), 5) == T(max - (highbit >> 4)));
+    assert(std::rotr(T(max - 1), 6) == T(max - (highbit >> 5)));
+    assert(std::rotr(T(max - 1), 7) == T(max - (highbit >> 6)));
+
+    assert(std::rotr(T(128), 0) == T(128));
+    assert(std::rotr(T(128), 1) == T(64));
+    assert(std::rotr(T(128), 2) == T(32));
+    assert(std::rotr(T(128), 3) == T(16));
+    assert(std::rotr(T(128), 4) == T(8));
+    assert(std::rotr(T(128), 5) == T(4));
+    assert(std::rotr(T(128), 6) == T(2));
+    assert(std::rotr(T(128), 7) == T(1));
+
+#ifndef TEST_HAS_NO_INT128
+    if constexpr (std::is_same_v<T, __uint128_t>) {
+        T val = (T(1) << 63) | (T(1) << 64);
+        assert(std::rotr(val, 0) == val);
+        assert(std::rotr(val, 128) == val);
+        assert(std::rotr(val, 256) == val);
+        assert(std::rotr(val, 1) == val >> 1);
+        assert(std::rotr(val, 127) == val << 1);
+        assert(std::rotr(T(3), 1) == ((T(1) << 127) | T(1)));
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+    auto lambda = [](auto x) -> decltype(std::rotl(x, 1U)) {};
+    using L = decltype(lambda);
+
+    static_assert(!std::is_invocable_v<L, signed char>);
+    static_assert(!std::is_invocable_v<L, short>);
+    static_assert(!std::is_invocable_v<L, int>);
+    static_assert(!std::is_invocable_v<L, long>);
+    static_assert(!std::is_invocable_v<L, long long>);
+#ifndef TEST_HAS_NO_INT128
+    static_assert(!std::is_invocable_v<L, __int128_t>);
+#endif
+
+    static_assert(!std::is_invocable_v<L, int8_t>);
+    static_assert(!std::is_invocable_v<L, int16_t>);
+    static_assert(!std::is_invocable_v<L, int32_t>);
+    static_assert(!std::is_invocable_v<L, int64_t>);
+    static_assert(!std::is_invocable_v<L, intmax_t>);
+    static_assert(!std::is_invocable_v<L, intptr_t>);
+    static_assert(!std::is_invocable_v<L, ptrdiff_t>);
+
+    static_assert(!std::is_invocable_v<L, bool>);
+    static_assert(!std::is_invocable_v<L, char>);
+    static_assert(!std::is_invocable_v<L, wchar_t>);
+#ifndef TEST_HAS_NO_CHAR8_T
+    static_assert(!std::is_invocable_v<L, char8_t>);
+#endif
+    static_assert(!std::is_invocable_v<L, char16_t>);
+    static_assert(!std::is_invocable_v<L, char32_t>);
+
+    static_assert(!std::is_invocable_v<L, A>);
+    static_assert(!std::is_invocable_v<L, A*>);
+    static_assert(!std::is_invocable_v<L, E1>);
+    static_assert(!std::is_invocable_v<L, E2>);
+    }
+
+    static_assert(test<unsigned char>());
+    static_assert(test<unsigned short>());
+    static_assert(test<unsigned int>());
+    static_assert(test<unsigned long>());
+    static_assert(test<unsigned long long>());
+#ifndef TEST_HAS_NO_INT128
+    static_assert(test<__uint128_t>());
+#endif
+
+    static_assert(test<uint8_t>());
+    static_assert(test<uint16_t>());
+    static_assert(test<uint32_t>());
+    static_assert(test<uint64_t>());
+    static_assert(test<uintmax_t>());
+    static_assert(test<uintptr_t>());
+    static_assert(test<size_t>());
+
+    test<unsigned char>();
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test<__uint128_t>();
+#endif
+
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+    test<uintmax_t>();
+    test<uintptr_t>();
+    test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/bit/byteswap.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/bit/byteswap.pass.cpp
new file mode 100644
index 0000000..bd73515
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/bit/byteswap.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <bit>
+#include <cassert>
+#include <cstdint>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T>
+concept has_byteswap = requires(T t) {
+  std::byteswap(t);
+};
+
+static_assert(!has_byteswap<void*>);
+static_assert(!has_byteswap<float>);
+static_assert(!has_byteswap<char[2]>);
+static_assert(!has_byteswap<std::byte>);
+
+template <class T>
+constexpr void test_num(T in, T expected) {
+  assert(std::byteswap(in) == expected);
+  ASSERT_SAME_TYPE(decltype(std::byteswap(in)), decltype(in));
+  ASSERT_NOEXCEPT(std::byteswap(in));
+}
+
+template <class T>
+constexpr std::pair<T, T> get_test_data() {
+  switch (sizeof(T)) {
+  case 2:
+    return {static_cast<T>(0x1234), static_cast<T>(0x3412)};
+  case 4:
+    return {static_cast<T>(0x60AF8503), static_cast<T>(0x0385AF60)};
+  case 8:
+    return {static_cast<T>(0xABCDFE9477936406), static_cast<T>(0x0664937794FECDAB)};
+  default:
+    assert(false);
+    return {}; // for MSVC, whose `assert` is tragically not [[noreturn]]
+  }
+}
+
+template <class T>
+constexpr void test_implementation_defined_size() {
+  const auto [in, expected] = get_test_data<T>();
+  test_num<T>(in, expected);
+}
+
+constexpr bool test() {
+  test_num<uint8_t>(0xAB, 0xAB);
+  test_num<uint16_t>(0xCDEF, 0xEFCD);
+  test_num<uint32_t>(0x01234567, 0x67452301);
+  test_num<uint64_t>(0x0123456789ABCDEF, 0xEFCDAB8967452301);
+
+  test_num<int8_t>(static_cast<int8_t>(0xAB), static_cast<int8_t>(0xAB));
+  test_num<int16_t>(static_cast<int16_t>(0xCDEF), static_cast<int16_t>(0xEFCD));
+  test_num<int32_t>(0x01234567, 0x67452301);
+  test_num<int64_t>(0x0123456789ABCDEF, 0xEFCDAB8967452301);
+
+#ifndef TEST_HAS_NO_INT128
+  const auto in = static_cast<__uint128_t>(0x0123456789ABCDEF) << 64 | 0x13579BDF02468ACE;
+  const auto expected = static_cast<__uint128_t>(0xCE8A4602DF9B5713) << 64 | 0xEFCDAB8967452301;
+  test_num<__uint128_t>(in, expected);
+  test_num<__int128_t>(in, expected);
+#endif
+
+  test_num<bool>(true, true);
+  test_num<bool>(false, false);
+  test_num<char>(static_cast<char>(0xCD), static_cast<char>(0xCD));
+  test_num<unsigned char>(0xEF, 0xEF);
+  test_num<signed char>(0x45, 0x45);
+  test_num<char8_t>(0xAB, 0xAB);
+  test_num<char16_t>(0xABCD, 0xCDAB);
+  test_num<char32_t>(0xABCDEF01, 0x01EFCDAB);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_implementation_defined_size<wchar_t>();
+#endif
+
+  test_implementation_defined_size<short>();
+  test_implementation_defined_size<unsigned short>();
+  test_implementation_defined_size<int>();
+  test_implementation_defined_size<unsigned int>();
+  test_implementation_defined_size<long>();
+  test_implementation_defined_size<unsigned long>();
+  test_implementation_defined_size<long long>();
+  test_implementation_defined_size<unsigned long long>();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/abs.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/abs.pass.cpp
new file mode 100644
index 0000000..03aae46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/abs.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <assert.h>
+#include <cmath>
+#include <cstdint>
+#include <limits>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template<class T>
+struct correct_size_int
+{
+    typedef typename std::conditional<sizeof(T) < sizeof(int), int, T>::type type;
+};
+
+template <class Source, class Result>
+void test_abs()
+{
+    Source neg_val = -5;
+    Source pos_val = 5;
+    Result res = 5;
+
+    ASSERT_SAME_TYPE(decltype(std::abs(neg_val)), Result);
+
+    assert(std::abs(neg_val) == res);
+    assert(std::abs(pos_val) == res);
+}
+
+void test_big()
+{
+    long long int big_value = std::numeric_limits<long long int>::max(); // a value too big for ints to store
+    long long int negative_big_value = -big_value;
+    assert(std::abs(negative_big_value) == big_value); // make sure it doesn't get casted to a smaller type
+}
+
+// The following is helpful to keep in mind:
+// 1byte == char <= short <= int <= long <= long long
+
+int main(int, char**)
+{
+    // On some systems char is unsigned.
+    // If that is the case, we should just test signed char twice.
+    typedef std::conditional<
+        std::is_signed<char>::value, char, signed char
+    >::type SignedChar;
+
+    // All types less than or equal to and not greater than int are promoted to int.
+    test_abs<short int, int>();
+    test_abs<SignedChar, int>();
+    test_abs<signed char, int>();
+
+    // These three calls have specific overloads:
+    test_abs<int, int>();
+    test_abs<long int, long int>();
+    test_abs<long long int, long long int>();
+
+    // Here there is no guarantee that int is larger than int8_t so we
+    // use a helper type trait to conditional test against int.
+    test_abs<std::int8_t, correct_size_int<std::int8_t>::type>();
+    test_abs<std::int16_t, correct_size_int<std::int16_t>::type>();
+    test_abs<std::int32_t, correct_size_int<std::int32_t>::type>();
+    test_abs<std::int64_t, correct_size_int<std::int64_t>::type>();
+
+    test_abs<long double, long double>();
+    test_abs<double, double>();
+    test_abs<float, float>();
+
+    test_big();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/abs.verify.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/abs.verify.cpp
new file mode 100644
index 0000000..dec8076
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/abs.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <cmath>
+
+void f() {
+    unsigned int ui = -5;
+    (void)std::abs(ui); // expected-error {{call to 'abs' is ambiguous}}
+
+    unsigned char uc = -5;
+    (void)std::abs(uc); // expected-warning {{taking the absolute value of unsigned type 'unsigned char' has no effect}}
+
+    unsigned short us = -5;
+    (void)std::abs(us); // expected-warning {{taking the absolute value of unsigned type 'unsigned short' has no effect}}
+
+    unsigned long ul = -5;
+    (void)std::abs(ul); // expected-error {{call to 'abs' is ambiguous}}
+
+    unsigned long long ull = -5;
+    (void)std::abs(ull); // expected-error {{call to 'abs' is ambiguous}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/cmath.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/cmath.pass.cpp
new file mode 100644
index 0000000..c867472
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/cmath.pass.cpp
@@ -0,0 +1,1653 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cmath>
+
+#include <cmath>
+#include <limits>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "hexfloat.h"
+#include "truncate_fp.h"
+
+// convertible to int/float/double/etc
+template <class T, int N=0>
+struct Value {
+    operator T () { return T(N); }
+};
+
+// See PR21083
+// Ambiguous is a user-defined type that defines its own overloads of cmath
+// functions. When the std overloads are candidates too (by using or adl),
+// they should not interfere.
+struct Ambiguous : std::true_type { // ADL
+    operator float () { return 0.f; }
+    operator double () { return 0.; }
+};
+Ambiguous abs(Ambiguous){ return Ambiguous(); }
+Ambiguous acos(Ambiguous){ return Ambiguous(); }
+Ambiguous asin(Ambiguous){ return Ambiguous(); }
+Ambiguous atan(Ambiguous){ return Ambiguous(); }
+Ambiguous atan2(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous ceil(Ambiguous){ return Ambiguous(); }
+Ambiguous cos(Ambiguous){ return Ambiguous(); }
+Ambiguous cosh(Ambiguous){ return Ambiguous(); }
+Ambiguous exp(Ambiguous){ return Ambiguous(); }
+Ambiguous fabs(Ambiguous){ return Ambiguous(); }
+Ambiguous floor(Ambiguous){ return Ambiguous(); }
+Ambiguous fmod(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous frexp(Ambiguous, int*){ return Ambiguous(); }
+Ambiguous ldexp(Ambiguous, int){ return Ambiguous(); }
+Ambiguous log(Ambiguous){ return Ambiguous(); }
+Ambiguous log10(Ambiguous){ return Ambiguous(); }
+Ambiguous modf(Ambiguous, Ambiguous*){ return Ambiguous(); }
+Ambiguous pow(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous sin(Ambiguous){ return Ambiguous(); }
+Ambiguous sinh(Ambiguous){ return Ambiguous(); }
+Ambiguous sqrt(Ambiguous){ return Ambiguous(); }
+Ambiguous tan(Ambiguous){ return Ambiguous(); }
+Ambiguous tanh(Ambiguous){ return Ambiguous(); }
+Ambiguous signbit(Ambiguous){ return Ambiguous(); }
+Ambiguous fpclassify(Ambiguous){ return Ambiguous(); }
+Ambiguous isfinite(Ambiguous){ return Ambiguous(); }
+Ambiguous isnormal(Ambiguous){ return Ambiguous(); }
+Ambiguous isgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous isgreaterequal(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous isless(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous islessequal(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous islessgreater(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous isunordered(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous acosh(Ambiguous){ return Ambiguous(); }
+Ambiguous asinh(Ambiguous){ return Ambiguous(); }
+Ambiguous atanh(Ambiguous){ return Ambiguous(); }
+Ambiguous cbrt(Ambiguous){ return Ambiguous(); }
+Ambiguous copysign(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous erf(Ambiguous){ return Ambiguous(); }
+Ambiguous erfc(Ambiguous){ return Ambiguous(); }
+Ambiguous exp2(Ambiguous){ return Ambiguous(); }
+Ambiguous expm1(Ambiguous){ return Ambiguous(); }
+Ambiguous fdim(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous fma(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous fmax(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous fmin(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous hypot(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous hypot(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous ilogb(Ambiguous){ return Ambiguous(); }
+Ambiguous lerp(Ambiguous, Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous lgamma(Ambiguous){ return Ambiguous(); }
+Ambiguous llrint(Ambiguous){ return Ambiguous(); }
+Ambiguous llround(Ambiguous){ return Ambiguous(); }
+Ambiguous log1p(Ambiguous){ return Ambiguous(); }
+Ambiguous log2(Ambiguous){ return Ambiguous(); }
+Ambiguous logb(Ambiguous){ return Ambiguous(); }
+Ambiguous lrint(Ambiguous){ return Ambiguous(); }
+Ambiguous lround(Ambiguous){ return Ambiguous(); }
+Ambiguous nearbyint(Ambiguous){ return Ambiguous(); }
+Ambiguous nextafter(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous nexttoward(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous remainder(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous remquo(Ambiguous, Ambiguous, int*){ return Ambiguous(); }
+Ambiguous rint(Ambiguous){ return Ambiguous(); }
+Ambiguous round(Ambiguous){ return Ambiguous(); }
+Ambiguous scalbln(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous scalbn(Ambiguous, Ambiguous){ return Ambiguous(); }
+Ambiguous tgamma(Ambiguous){ return Ambiguous(); }
+Ambiguous trunc(Ambiguous){ return Ambiguous(); }
+
+template <class T, class = decltype(std::abs(std::declval<T>()))>
+std::true_type has_abs_imp(int);
+template <class T>
+std::false_type has_abs_imp(...);
+
+template <class T>
+struct has_abs : decltype(has_abs_imp<T>(0)) {};
+
+void test_abs()
+{
+    // See also "abs.pass.cpp"
+
+    TEST_DIAGNOSTIC_PUSH
+    TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
+
+    static_assert((std::is_same<decltype(std::abs((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::abs((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::abs((int)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((unsigned short)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((signed char)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((short)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::abs((char)0)), int>::value), "");
+    static_assert((std::is_same<decltype(abs(Ambiguous())), Ambiguous>::value), "");
+
+    static_assert(!has_abs<unsigned>::value, "");
+    static_assert(!has_abs<unsigned long>::value, "");
+    static_assert(!has_abs<unsigned long long>::value, "");
+    static_assert(!has_abs<size_t>::value, "");
+
+    TEST_DIAGNOSTIC_POP
+
+    assert(std::abs(-1.) == 1);
+}
+
+
+void test_acos()
+{
+    static_assert((std::is_same<decltype(std::acos((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::acos((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acos((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::acosf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::acosl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(acos(Ambiguous())), Ambiguous>::value), "");
+    assert(std::acos(1) == 0);
+}
+
+void test_asin()
+{
+    static_assert((std::is_same<decltype(std::asin((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::asin((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asin((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::asinf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::asinl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(asin(Ambiguous())), Ambiguous>::value), "");
+    assert(std::asin(0) == 0);
+}
+
+void test_atan()
+{
+    static_assert((std::is_same<decltype(std::atan((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::atan((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atanf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::atanl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(atan(Ambiguous())), Ambiguous>::value), "");
+    assert(std::atan(0) == 0);
+}
+
+void test_atan2()
+{
+    static_assert((std::is_same<decltype(std::atan2((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2f(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::atan2l(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atan2((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(atan2(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::atan2(0,1) == 0);
+}
+
+void test_ceil()
+{
+    static_assert((std::is_same<decltype(std::ceil((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ceil((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::ceilf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::ceill(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(ceil(Ambiguous())), Ambiguous>::value), "");
+    assert(std::ceil(0) == 0);
+}
+
+void test_cos()
+{
+    static_assert((std::is_same<decltype(std::cos((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::cos((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cos((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::cosf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::cosl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(cos(Ambiguous())), Ambiguous>::value), "");
+    assert(std::cos(0) == 1);
+}
+
+void test_cosh()
+{
+    static_assert((std::is_same<decltype(std::cosh((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cosh((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::coshf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::coshl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(cosh(Ambiguous())), Ambiguous>::value), "");
+    assert(std::cosh(0) == 1);
+}
+
+void test_exp()
+{
+    static_assert((std::is_same<decltype(std::exp((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::exp((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::expf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::expl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(exp(Ambiguous())), Ambiguous>::value), "");
+    assert(std::exp(0) == 1);
+}
+
+void test_fabs()
+{
+    static_assert((std::is_same<decltype(std::fabs((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fabs((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fabsf(0.0f)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fabsl(0.0L)), long double>::value), "");
+    static_assert((std::is_same<decltype(fabs(Ambiguous())), Ambiguous>::value), "");
+    assert(std::fabs(-1) == 1);
+}
+
+void test_floor()
+{
+    static_assert((std::is_same<decltype(std::floor((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::floor((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::floor((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::floorf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::floorl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(floor(Ambiguous())), Ambiguous>::value), "");
+    assert(std::floor(1) == 1);
+}
+
+void test_fmod()
+{
+    static_assert((std::is_same<decltype(std::fmod((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmodf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fmodl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmod((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fmod(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::fmod(1.5,1) == .5);
+}
+
+void test_frexp()
+{
+    int ip;
+    static_assert((std::is_same<decltype(std::frexp((float)0, &ip)), float>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((bool)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((unsigned short)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((int)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((unsigned int)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((unsigned long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((long long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((unsigned long long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((double)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::frexp((long double)0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::frexpf(0, &ip)), float>::value), "");
+    static_assert((std::is_same<decltype(std::frexpl(0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(frexp(Ambiguous(), &ip)), Ambiguous>::value), "");
+    assert(std::frexp(0, &ip) == 0);
+}
+
+void test_ldexp()
+{
+    int ip = 1;
+    static_assert((std::is_same<decltype(std::ldexp((float)0, ip)), float>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((bool)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((unsigned short)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((int)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((unsigned int)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((long)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((unsigned long)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((long long)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((unsigned long long)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((double)0, ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexp((long double)0, ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::ldexpf(0, ip)), float>::value), "");
+    static_assert((std::is_same<decltype(std::ldexpl(0, ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(ldexp(Ambiguous(), ip)), Ambiguous>::value), "");
+    assert(std::ldexp(1, ip) == 2);
+}
+
+void test_log()
+{
+    static_assert((std::is_same<decltype(std::log((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::logf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::logl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log(Ambiguous())), Ambiguous>::value), "");
+    assert(std::log(1) == 0);
+}
+
+void test_log10()
+{
+    static_assert((std::is_same<decltype(std::log10((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log10((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log10((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::log10f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log10l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log10(Ambiguous())), Ambiguous>::value), "");
+    assert(std::log10(1) == 0);
+}
+
+void test_modf()
+{
+    static_assert((std::is_same<decltype(std::modf((float)0, (float*)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::modf((double)0, (double*)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::modf((long double)0, (long double*)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::modff(0, (float*)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::modfl(0, (long double*)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(modf(Ambiguous(), (Ambiguous*)0)), Ambiguous>::value), "");
+    double i;
+    assert(std::modf(1., &i) == 0);
+}
+
+void test_pow()
+{
+    static_assert((std::is_same<decltype(std::pow((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::pow((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::powf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::powl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::pow((int)0, (int)0)), double>::value), "");
+//     static_assert((std::is_same<decltype(std::pow(Value<int>(), (int)0)), double>::value), "");
+//     static_assert((std::is_same<decltype(std::pow(Value<long double>(), (float)0)), long double>::value), "");
+//     static_assert((std::is_same<decltype(std::pow((float) 0, Value<float>())), float>::value), "");
+    static_assert((std::is_same<decltype(pow(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::pow(1,1) == 1);
+//     assert(std::pow(Value<int,1>(), Value<float,1>())  == 1);
+//     assert(std::pow(1.0f, Value<double,1>()) == 1);
+//     assert(std::pow(1.0, Value<int,1>()) == 1);
+//     assert(std::pow(Value<long double,1>(), 1LL) == 1);
+}
+
+void test_sin()
+{
+    static_assert((std::is_same<decltype(std::sin((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::sin((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sin((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::sinf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::sinl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(sin(Ambiguous())), Ambiguous>::value), "");
+    assert(std::sin(0) == 0);
+}
+
+void test_sinh()
+{
+    static_assert((std::is_same<decltype(std::sinh((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sinh((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::sinhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::sinhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(sinh(Ambiguous())), Ambiguous>::value), "");
+    assert(std::sinh(0) == 0);
+}
+
+void test_sqrt()
+{
+    static_assert((std::is_same<decltype(std::sqrt((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrt((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::sqrtf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::sqrtl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(sqrt(Ambiguous())), Ambiguous>::value), "");
+    assert(std::sqrt(4) == 2);
+}
+
+void test_tan()
+{
+    static_assert((std::is_same<decltype(std::tan((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::tan((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tan((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::tanf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::tanl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(tan(Ambiguous())), Ambiguous>::value), "");
+    assert(std::tan(0) == 0);
+}
+
+void test_tanh()
+{
+    static_assert((std::is_same<decltype(std::tanh((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tanh((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::tanhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::tanhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(tanh(Ambiguous())), Ambiguous>::value), "");
+    assert(std::tanh(0) == 0);
+}
+
+void test_signbit()
+{
+#ifdef signbit
+#error signbit defined
+#endif
+    static_assert((std::is_same<decltype(std::signbit((float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::signbit((double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::signbit(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::signbit((long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(signbit(Ambiguous())), Ambiguous>::value), "");
+    assert(std::signbit(-1.0) == true);
+    assert(std::signbit(0u) == false);
+    assert(std::signbit(std::numeric_limits<unsigned>::max()) == false);
+    assert(std::signbit(0) == false);
+    assert(std::signbit(1) == false);
+    assert(std::signbit(-1) == true);
+    assert(std::signbit(std::numeric_limits<int>::max()) == false);
+    assert(std::signbit(std::numeric_limits<int>::min()) == true);
+}
+
+void test_fpclassify()
+{
+#ifdef fpclassify
+#error fpclassify defined
+#endif
+    static_assert((std::is_same<decltype(std::fpclassify((float)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fpclassify((double)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fpclassify(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fpclassify((long double)0)), int>::value), "");
+    static_assert((std::is_same<decltype(fpclassify(Ambiguous())), Ambiguous>::value), "");
+    assert(std::fpclassify(-1.0) == FP_NORMAL);
+    assert(std::fpclassify(0) == FP_ZERO);
+    assert(std::fpclassify(1) == FP_NORMAL);
+    assert(std::fpclassify(-1) == FP_NORMAL);
+    assert(std::fpclassify(std::numeric_limits<int>::max()) == FP_NORMAL);
+    assert(std::fpclassify(std::numeric_limits<int>::min()) == FP_NORMAL);
+}
+
+void test_isfinite()
+{
+#ifdef isfinite
+#error isfinite defined
+#endif
+    static_assert((std::is_same<decltype(std::isfinite((float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isfinite((double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isfinite(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isfinite((long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isfinite(Ambiguous())), Ambiguous>::value), "");
+    assert(std::isfinite(-1.0) == true);
+    assert(std::isfinite(0) == true);
+    assert(std::isfinite(1) == true);
+    assert(std::isfinite(-1) == true);
+    assert(std::isfinite(std::numeric_limits<int>::max()) == true);
+    assert(std::isfinite(std::numeric_limits<int>::min()) == true);
+}
+
+void test_isnormal()
+{
+#ifdef isnormal
+#error isnormal defined
+#endif
+    static_assert((std::is_same<decltype(std::isnormal((float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isnormal((double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isnormal(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isnormal((long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isnormal(Ambiguous())), Ambiguous>::value), "");
+    assert(std::isnormal(-1.0) == true);
+    assert(std::isnormal(0) == false);
+    assert(std::isnormal(1) == true);
+    assert(std::isnormal(-1) == true);
+    assert(std::isnormal(std::numeric_limits<int>::max()) == true);
+    assert(std::isnormal(std::numeric_limits<int>::min()) == true);
+}
+
+void test_isgreater()
+{
+#ifdef isgreater
+#error isgreater defined
+#endif
+    static_assert((std::is_same<decltype(std::isgreater((float)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((float)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((float)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater(0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((long double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((long double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreater((long double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::isgreater(-1.0, 0.F) == false);
+}
+
+void test_isgreaterequal()
+{
+#ifdef isgreaterequal
+#error isgreaterequal defined
+#endif
+    static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((float)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal(0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isgreaterequal((long double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isgreaterequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::isgreaterequal(-1.0, 0.F) == false);
+}
+
+void test_isinf()
+{
+#ifdef isinf
+#error isinf defined
+#endif
+    static_assert((std::is_same<decltype(std::isinf((float)0)), bool>::value), "");
+
+    typedef decltype(std::isinf((double)0)) DoubleRetType;
+#if !defined(__linux__) || defined(__clang__)
+    static_assert((std::is_same<DoubleRetType, bool>::value), "");
+#else
+    // GLIBC < 2.23 defines 'isinf(double)' with a return type of 'int' in
+    // all C++ dialects. The test should tolerate this when libc++ can't work
+    // around it.
+    // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
+    static_assert((std::is_same<DoubleRetType, bool>::value
+                || std::is_same<DoubleRetType, int>::value), "");
+#endif
+
+    static_assert((std::is_same<decltype(std::isinf(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isinf((long double)0)), bool>::value), "");
+    assert(std::isinf(-1.0) == false);
+    assert(std::isinf(0) == false);
+    assert(std::isinf(1) == false);
+    assert(std::isinf(-1) == false);
+    assert(std::isinf(std::numeric_limits<int>::max()) == false);
+    assert(std::isinf(std::numeric_limits<int>::min()) == false);
+}
+
+void test_isless()
+{
+#ifdef isless
+#error isless defined
+#endif
+    static_assert((std::is_same<decltype(std::isless((float)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((float)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((float)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless(0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((long double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((long double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isless((long double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isless(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::isless(-1.0, 0.F) == true);
+}
+
+void test_islessequal()
+{
+#ifdef islessequal
+#error islessequal defined
+#endif
+    static_assert((std::is_same<decltype(std::islessequal((float)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((float)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((float)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal(0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((long double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((long double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessequal((long double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(islessequal(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::islessequal(-1.0, 0.F) == true);
+}
+
+void test_islessgreater()
+{
+#ifdef islessgreater
+#error islessgreater defined
+#endif
+    static_assert((std::is_same<decltype(std::islessgreater((float)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((float)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((float)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater(0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((long double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((long double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::islessgreater((long double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(islessgreater(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::islessgreater(-1.0, 0.F) == true);
+}
+
+void test_isnan()
+{
+#ifdef isnan
+#error isnan defined
+#endif
+    static_assert((std::is_same<decltype(std::isnan((float)0)), bool>::value), "");
+
+    typedef decltype(std::isnan((double)0)) DoubleRetType;
+#if !defined(__linux__) || defined(__clang__)
+    static_assert((std::is_same<DoubleRetType, bool>::value), "");
+#else
+    // GLIBC < 2.23 defines 'isinf(double)' with a return type of 'int' in
+    // all C++ dialects. The test should tolerate this when libc++ can't work
+    // around it.
+    // See: https://sourceware.org/bugzilla/show_bug.cgi?id=19439
+    static_assert((std::is_same<DoubleRetType, bool>::value
+                || std::is_same<DoubleRetType, int>::value), "");
+#endif
+
+    static_assert((std::is_same<decltype(std::isnan(0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isnan((long double)0)), bool>::value), "");
+    assert(std::isnan(-1.0) == false);
+    assert(std::isnan(0) == false);
+    assert(std::isnan(1) == false);
+    assert(std::isnan(-1) == false);
+    assert(std::isnan(std::numeric_limits<int>::max()) == false);
+    assert(std::isnan(std::numeric_limits<int>::min()) == false);
+}
+
+void test_isunordered()
+{
+#ifdef isunordered
+#error isunordered defined
+#endif
+    static_assert((std::is_same<decltype(std::isunordered((float)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((float)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((float)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered(0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((long double)0, (float)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((long double)0, (double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(std::isunordered((long double)0, (long double)0)), bool>::value), "");
+    static_assert((std::is_same<decltype(isunordered(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::isunordered(-1.0, 0.F) == false);
+}
+
+void test_acosh()
+{
+    static_assert((std::is_same<decltype(std::acosh((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::acosh((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::acoshf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::acoshl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(acosh(Ambiguous())), Ambiguous>::value), "");
+    assert(std::acosh(1) == 0);
+}
+
+void test_asinh()
+{
+    static_assert((std::is_same<decltype(std::asinh((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::asinh((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::asinhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::asinhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(asinh(Ambiguous())), Ambiguous>::value), "");
+    assert(std::asinh(0) == 0);
+}
+
+void test_atanh()
+{
+    static_assert((std::is_same<decltype(std::atanh((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::atanh((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::atanhf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::atanhl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(atanh(Ambiguous())), Ambiguous>::value), "");
+    assert(std::atanh(0) == 0);
+}
+
+void test_cbrt()
+{
+    static_assert((std::is_same<decltype(std::cbrt((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrt((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::cbrtf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::cbrtl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(cbrt(Ambiguous())), Ambiguous>::value), "");
+    assert(truncate_fp(std::cbrt(1)) == 1);
+}
+
+void test_copysign()
+{
+    static_assert((std::is_same<decltype(std::copysign((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::copysignf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::copysignl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::copysign((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(copysign(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::copysign(1,1) == 1);
+}
+
+void test_erf()
+{
+    static_assert((std::is_same<decltype(std::erf((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::erf((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erf((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::erff(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::erfl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(erf(Ambiguous())), Ambiguous>::value), "");
+    assert(std::erf(0) == 0);
+}
+
+void test_erfc()
+{
+    static_assert((std::is_same<decltype(std::erfc((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::erfc((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::erfcf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::erfcl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(erfc(Ambiguous())), Ambiguous>::value), "");
+    assert(std::erfc(0) == 1);
+}
+
+void test_exp2()
+{
+    static_assert((std::is_same<decltype(std::exp2((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::exp2f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::exp2l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(exp2(Ambiguous())), Ambiguous>::value), "");
+    assert(std::exp2(1) == 2);
+}
+
+void test_expm1()
+{
+    static_assert((std::is_same<decltype(std::expm1((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::expm1f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::expm1l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(expm1(Ambiguous())), Ambiguous>::value), "");
+    assert(std::expm1(0) == 0);
+}
+
+void test_fdim()
+{
+    static_assert((std::is_same<decltype(std::fdim((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fdimf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fdiml(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fdim((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fdim(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::fdim(1,0) == 1);
+}
+
+void test_fma()
+{
+    static_assert((std::is_same<decltype(std::fma((bool)0, (float)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((char)0, (float)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((unsigned)0, (float)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((float)0, (int)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((float)0, (long)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((float)0, (float)0, (float)0)), float>::value), "");
+
+    static_assert((std::is_same<decltype(std::fma((bool)0, (double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((char)0, (double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((unsigned)0, (double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (int)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (long)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (double)0,  (double)0)), double>::value), "");
+
+    static_assert((std::is_same<decltype(std::fma((bool)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((char)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((unsigned)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((long double)0, (int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((long double)0, (long)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (unsigned long long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (float)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((double)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fma((long double)0, (long double)0, (long double)0)), long double>::value), "");
+
+    static_assert((std::is_same<decltype(std::fmaf(0,0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fmal(0,0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(fma(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::fma(1,1,1) == 2);
+}
+
+void test_fmax()
+{
+    static_assert((std::is_same<decltype(std::fmax((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmaxf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fmaxl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmax((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fmax(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::fmax(1,0) == 1);
+}
+
+void test_fmin()
+{
+    static_assert((std::is_same<decltype(std::fmin((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fminf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::fminl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::fmin((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(fmin(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::fmin(1,0) == 0);
+}
+
+void test_hypot()
+{
+    static_assert((std::is_same<decltype(std::hypot((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypotf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::hypotl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::hypot(3,4) == 5);
+
+#if TEST_STD_VER > 14
+    static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((float)0, (double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::hypot((int)0, (int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(hypot(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+
+    assert(std::hypot(2,3,6) == 7);
+    assert(std::hypot(1,4,8) == 9);
+#endif
+}
+
+void test_ilogb()
+{
+    static_assert((std::is_same<decltype(std::ilogb((float)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((bool)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((unsigned short)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((int)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((unsigned int)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((long)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((unsigned long)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((long long)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((unsigned long long)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((double)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogb((long double)0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogbf(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::ilogbl(0)), int>::value), "");
+    static_assert((std::is_same<decltype(ilogb(Ambiguous())), Ambiguous>::value), "");
+    assert(std::ilogb(1) == 0);
+}
+
+void test_lerp()
+{
+    // See also "lerp.pass.cpp"
+
+#if TEST_STD_VER > 17
+    static_assert((std::is_same<decltype(std::lerp((float)0, (float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((float)0, (double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::lerp((int)0, (int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(lerp(Ambiguous(), Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+
+    assert(std::lerp(2, 3, 1) == 3);
+    assert(std::lerp(1, 3, 0.5) == 2);
+    assert(std::lerp(0, 4.0, 0) == 0);
+    static_assert(std::lerp(2, 3, 1) == 3);
+    static_assert(std::lerp(1, 3, 0.5) == 2);
+    static_assert(std::lerp(0, 4.0, 0) == 0);
+#endif
+}
+
+void test_lgamma()
+{
+    static_assert((std::is_same<decltype(std::lgamma((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::lgamma((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::lgammaf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::lgammal(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(lgamma(Ambiguous())), Ambiguous>::value), "");
+    assert(std::lgamma(1) == 0);
+}
+
+void test_llrint()
+{
+    static_assert((std::is_same<decltype(std::llrint((float)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((bool)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((unsigned short)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((int)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((unsigned int)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((unsigned long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((unsigned long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((double)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrint((long double)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrintf(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llrintl(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(llrint(Ambiguous())), Ambiguous>::value), "");
+    assert(std::llrint(1) == 1LL);
+}
+
+void test_llround()
+{
+    static_assert((std::is_same<decltype(std::llround((float)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((bool)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((unsigned short)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((int)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((unsigned int)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((unsigned long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((unsigned long long)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((double)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llround((long double)0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llroundf(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(std::llroundl(0)), long long>::value), "");
+    static_assert((std::is_same<decltype(llround(Ambiguous())), Ambiguous>::value), "");
+    assert(std::llround(1) == 1LL);
+}
+
+void test_log1p()
+{
+    static_assert((std::is_same<decltype(std::log1p((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log1p((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::log1pf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log1pl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log1p(Ambiguous())), Ambiguous>::value), "");
+    assert(std::log1p(0) == 0);
+}
+
+void test_log2()
+{
+    static_assert((std::is_same<decltype(std::log2((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log2((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::log2((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::log2f(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::log2l(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(log2(Ambiguous())), Ambiguous>::value), "");
+    assert(std::log2(1) == 0);
+}
+
+void test_logb()
+{
+    static_assert((std::is_same<decltype(std::logb((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::logb((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::logb((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::logbf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::logbl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(logb(Ambiguous())), Ambiguous>::value), "");
+    assert(std::logb(1) == 0);
+}
+
+void test_lrint()
+{
+    static_assert((std::is_same<decltype(std::lrint((float)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((bool)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((unsigned short)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((int)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((unsigned int)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((unsigned long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((long long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((unsigned long long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((double)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrint((long double)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrintf(0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lrintl(0)), long>::value), "");
+    static_assert((std::is_same<decltype(lrint(Ambiguous())), Ambiguous>::value), "");
+    assert(std::lrint(1) == 1L);
+}
+
+void test_lround()
+{
+    static_assert((std::is_same<decltype(std::lround((float)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((bool)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((unsigned short)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((int)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((unsigned int)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((unsigned long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((long long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((unsigned long long)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((double)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lround((long double)0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lroundf(0)), long>::value), "");
+    static_assert((std::is_same<decltype(std::lroundl(0)), long>::value), "");
+    static_assert((std::is_same<decltype(lround(Ambiguous())), Ambiguous>::value), "");
+    assert(std::lround(1) == 1L);
+}
+
+void test_nan()
+{
+    static_assert((std::is_same<decltype(std::nan("")), double>::value), "");
+    static_assert((std::is_same<decltype(std::nanf("")), float>::value), "");
+    static_assert((std::is_same<decltype(std::nanl("")), long double>::value), "");
+}
+
+void test_nearbyint()
+{
+    static_assert((std::is_same<decltype(std::nearbyint((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyint((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyintf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::nearbyintl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(nearbyint(Ambiguous())), Ambiguous>::value), "");
+    assert(std::nearbyint(1) == 1);
+}
+
+void test_nextafter()
+{
+    static_assert((std::is_same<decltype(std::nextafter((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafterf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::nextafterl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nextafter((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(nextafter(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::nextafter(0,1) == hexfloat<double>(0x1, 0, -1074));
+}
+
+void test_nexttoward()
+{
+    static_assert((std::is_same<decltype(std::nexttoward((float)0, (long double)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((bool)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((unsigned short)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((int)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((unsigned int)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((unsigned long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((long long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((unsigned long long)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((double)0, (long double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttoward((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::nexttowardf(0, (long double)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::nexttowardl(0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(nexttoward(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::nexttoward(0, 1) == hexfloat<double>(0x1, 0, -1074));
+}
+
+void test_remainder()
+{
+    static_assert((std::is_same<decltype(std::remainder((float)0, (float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((bool)0, (float)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((unsigned short)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((int)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((float)0, (unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((long double)0, (unsigned long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((int)0, (long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((int)0, (unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((double)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((long double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((float)0, (double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((float)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((double)0, (long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remainderf(0,0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::remainderl(0,0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remainder((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(remainder(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::remainder(0.5,1) == 0.5);
+}
+
+void test_remquo()
+{
+    int ip;
+    static_assert((std::is_same<decltype(std::remquo((float)0, (float)0, &ip)), float>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((bool)0, (float)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((unsigned short)0, (double)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((int)0, (long double)0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((float)0, (unsigned int)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((double)0, (long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((long double)0, (unsigned long)0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((int)0, (long long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((int)0, (unsigned long long)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((double)0, (double)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((long double)0, (long double)0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((float)0, (double)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((float)0, (long double)0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((double)0, (long double)0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remquof(0,0, &ip)), float>::value), "");
+    static_assert((std::is_same<decltype(std::remquol(0,0, &ip)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::remquo((int)0, (int)0, &ip)), double>::value), "");
+    static_assert((std::is_same<decltype(remquo(Ambiguous(), Ambiguous(), &ip)), Ambiguous>::value), "");
+    assert(std::remquo(0.5,1, &ip) == 0.5);
+}
+
+void test_rint()
+{
+    static_assert((std::is_same<decltype(std::rint((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::rint((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::rint((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::rintf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::rintl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(rint(Ambiguous())), Ambiguous>::value), "");
+    assert(std::rint(1) == 1);
+}
+
+void test_round()
+{
+    static_assert((std::is_same<decltype(std::round((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::round((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::round((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::roundf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::roundl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(round(Ambiguous())), Ambiguous>::value), "");
+    assert(std::round(1) == 1);
+}
+
+void test_scalbln()
+{
+    static_assert((std::is_same<decltype(std::scalbln((float)0, (long)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((bool)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((unsigned short)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((int)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((unsigned int)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((unsigned long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((long long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((unsigned long long)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((double)0, (long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbln((long double)0, (long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::scalblnf(0, (long)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::scalblnl(0, (long)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(scalbln(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::scalbln(1, 1) == 2);
+}
+
+void test_scalbn()
+{
+    static_assert((std::is_same<decltype(std::scalbn((float)0, (int)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((bool)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((unsigned short)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((unsigned int)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((unsigned long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((long long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((unsigned long long)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((double)0, (int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbn((long double)0, (int)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::scalbnf(0, (int)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::scalbnl(0, (int)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(scalbn(Ambiguous(), Ambiguous())), Ambiguous>::value), "");
+    assert(std::scalbn(1, 1) == 2);
+}
+
+void test_tgamma()
+{
+    static_assert((std::is_same<decltype(std::tgamma((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::tgamma((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::tgammaf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::tgammal(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(tgamma(Ambiguous())), Ambiguous>::value), "");
+    assert(std::tgamma(1) == 1);
+}
+
+void test_trunc()
+{
+    static_assert((std::is_same<decltype(std::trunc((float)0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((bool)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((unsigned short)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((unsigned int)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((unsigned long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((unsigned long long)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((double)0)), double>::value), "");
+    static_assert((std::is_same<decltype(std::trunc((long double)0)), long double>::value), "");
+    static_assert((std::is_same<decltype(std::truncf(0)), float>::value), "");
+    static_assert((std::is_same<decltype(std::truncl(0)), long double>::value), "");
+    static_assert((std::is_same<decltype(trunc(Ambiguous())), Ambiguous>::value), "");
+    assert(std::trunc(1) == 1);
+}
+
+int main(int, char**)
+{
+    test_abs();
+    test_acos();
+    test_asin();
+    test_atan();
+    test_atan2();
+    test_ceil();
+    test_cos();
+    test_cosh();
+    test_exp();
+    test_fabs();
+    test_floor();
+    test_fmod();
+    test_frexp();
+    test_ldexp();
+    test_log();
+    test_log10();
+    test_modf();
+    test_pow();
+    test_sin();
+    test_sinh();
+    test_sqrt();
+    test_tan();
+    test_tanh();
+    test_signbit();
+    test_fpclassify();
+    test_isfinite();
+    test_isnormal();
+    test_isgreater();
+    test_isgreaterequal();
+    test_isinf();
+    test_isless();
+    test_islessequal();
+    test_islessgreater();
+    test_isnan();
+    test_isunordered();
+    test_acosh();
+    test_asinh();
+    test_atanh();
+    test_cbrt();
+    test_copysign();
+    test_erf();
+    test_erfc();
+    test_exp2();
+    test_expm1();
+    test_fdim();
+    test_fma();
+    test_fmax();
+    test_fmin();
+    test_hypot();
+    test_ilogb();
+    test_lerp();
+    test_lgamma();
+    test_llrint();
+    test_llround();
+    test_log1p();
+    test_log2();
+    test_logb();
+    test_lrint();
+    test_lround();
+    test_nan();
+    test_nearbyint();
+    test_nextafter();
+    test_nexttoward();
+    test_remainder();
+    test_remquo();
+    test_rint();
+    test_round();
+    test_scalbln();
+    test_scalbn();
+    test_tgamma();
+    test_trunc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/ctgmath.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/ctgmath.pass.cpp
new file mode 100644
index 0000000..2c8d054
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/ctgmath.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ctgmath>
+
+#include <ctgmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::complex<double> cd;
+    (void)cd;
+    double x = std::sin(0);
+    ((void)x); // Prevent unused warning
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/isfinite.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isfinite.pass.cpp
new file mode 100644
index 0000000..fd2ad11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isfinite.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool isfinite(floating-point-type x); // constexpr since C++23
+
+// We don't control the implementation on windows
+// UNSUPPORTED: windows
+
+#include <cassert>
+#include <cmath>
+#include <limits>
+
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+struct TestFloat {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(std::isfinite(std::numeric_limits<T>::max()));
+    assert(!std::isfinite(std::numeric_limits<T>::infinity()));
+    assert(std::isfinite(std::numeric_limits<T>::min()));
+    assert(std::isfinite(std::numeric_limits<T>::denorm_min()));
+    assert(std::isfinite(std::numeric_limits<T>::lowest()));
+    assert(!std::isfinite(-std::numeric_limits<T>::infinity()));
+    assert(std::isfinite(T(0)));
+    assert(!std::isfinite(std::numeric_limits<T>::quiet_NaN()));
+    assert(!std::isfinite(std::numeric_limits<T>::signaling_NaN()));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+struct TestInt {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(std::isfinite(std::numeric_limits<T>::max()));
+    assert(std::isfinite(std::numeric_limits<T>::lowest()));
+    assert(std::isfinite(T(0)));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+int main(int, char**) {
+  meta::for_each(meta::floating_point_types(), TestFloat());
+  meta::for_each(meta::integral_types(), TestInt());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/isinf.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isinf.pass.cpp
new file mode 100644
index 0000000..3b1e54f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isinf.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool isfinite(floating-point-type x); // constexpr since C++23
+
+// We don't control the implementation on windows
+// UNSUPPORTED: windows
+
+#include <cassert>
+#include <cmath>
+#include <limits>
+
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+struct TestFloat {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(!std::isinf(std::numeric_limits<T>::max()));
+    assert(std::isinf(std::numeric_limits<T>::infinity()));
+    assert(!std::isinf(std::numeric_limits<T>::min()));
+    assert(!std::isinf(std::numeric_limits<T>::denorm_min()));
+    assert(!std::isinf(std::numeric_limits<T>::lowest()));
+    assert(std::isinf(-std::numeric_limits<T>::infinity()));
+    assert(!std::isinf(T(0)));
+    assert(!std::isinf(std::numeric_limits<T>::quiet_NaN()));
+    assert(!std::isinf(std::numeric_limits<T>::signaling_NaN()));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+struct TestInt {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(!std::isinf(std::numeric_limits<T>::max()));
+    assert(!std::isinf(std::numeric_limits<T>::lowest()));
+    assert(!std::isinf(T(0)));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+int main(int, char**) {
+  meta::for_each(meta::floating_point_types(), TestFloat());
+  meta::for_each(meta::integral_types(), TestInt());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/isnan.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isnan.pass.cpp
new file mode 100644
index 0000000..c8ac055
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isnan.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool isfinite(floating-point-type x); // constexpr since C++23
+
+// We don't control the implementation on windows
+// UNSUPPORTED: windows
+
+#include <cassert>
+#include <cmath>
+#include <limits>
+
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+struct TestFloat {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(!std::isnan(std::numeric_limits<T>::max()));
+    assert(!std::isnan(std::numeric_limits<T>::infinity()));
+    assert(!std::isnan(std::numeric_limits<T>::min()));
+    assert(!std::isnan(std::numeric_limits<T>::denorm_min()));
+    assert(!std::isnan(std::numeric_limits<T>::lowest()));
+    assert(!std::isnan(-std::numeric_limits<T>::infinity()));
+    assert(!std::isnan(T(0)));
+    assert(std::isnan(std::numeric_limits<T>::quiet_NaN()));
+    assert(std::isnan(std::numeric_limits<T>::signaling_NaN()));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+struct TestInt {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(!std::isnan(std::numeric_limits<T>::max()));
+    assert(!std::isnan(std::numeric_limits<T>::lowest()));
+    assert(!std::isnan(T(0)));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+int main(int, char**) {
+  meta::for_each(meta::floating_point_types(), TestFloat());
+  meta::for_each(meta::integral_types(), TestInt());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/isnormal.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isnormal.pass.cpp
new file mode 100644
index 0000000..681438e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/isnormal.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool isfinite(floating-point-type x); // constexpr since C++23
+
+// We don't control the implementation on windows
+// UNSUPPORTED: windows
+
+#include <cassert>
+#include <cmath>
+#include <limits>
+
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+struct TestFloat {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(std::isnormal(std::numeric_limits<T>::max()));
+    assert(!std::isnormal(std::numeric_limits<T>::infinity()));
+    assert(std::isnormal(std::numeric_limits<T>::min()));
+    assert(!std::isnormal(std::numeric_limits<T>::denorm_min()));
+    assert(std::isnormal(std::numeric_limits<T>::lowest()));
+    assert(!std::isnormal(-std::numeric_limits<T>::infinity()));
+    assert(!std::isnormal(T(0)));
+    assert(!std::isnormal(std::numeric_limits<T>::quiet_NaN()));
+    assert(!std::isnormal(std::numeric_limits<T>::signaling_NaN()));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+struct TestInt {
+  template <class T>
+  static TEST_CONSTEXPR_CXX23 bool test() {
+    assert(std::isnormal(std::numeric_limits<T>::max()));
+    assert(std::isnormal(std::numeric_limits<T>::lowest()) == std::is_signed<T>::value);
+    assert(!std::isnormal(T(0)));
+
+    return true;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()() {
+    test<T>();
+#if TEST_STD_VER >= 23
+    static_assert(test<T>());
+#endif
+  }
+};
+
+int main(int, char**) {
+  meta::for_each(meta::floating_point_types(), TestFloat());
+  meta::for_each(meta::integral_types(), TestInt());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/lerp.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/lerp.pass.cpp
new file mode 100644
index 0000000..6b0b5ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/lerp.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <cmath>
+
+// constexpr float lerp(float a, float b, float t) noexcept;
+// constexpr double lerp(double a, double b, double t) noexcept;
+// constexpr long double lerp(long double a, long double b, long double t) noexcept;
+
+#include <cmath>
+#include <limits>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "fp_compare.h"
+
+template <typename T>
+constexpr bool constexpr_test()
+{
+    return std::lerp(T( 0), T(12), T(0))   == T(0)
+        && std::lerp(T(12), T( 0), T(0.5)) == T(6)
+        && std::lerp(T( 0), T(12), T(2))   == T(24);
+}
+
+
+template <typename T>
+void test()
+{
+    ASSERT_SAME_TYPE(T, decltype(std::lerp(T(), T(), T())));
+    LIBCPP_ASSERT_NOEXCEPT(      std::lerp(T(), T(), T()));
+
+//     constexpr T minV = std::numeric_limits<T>::min();
+    constexpr T maxV = std::numeric_limits<T>::max();
+    constexpr T inf  = std::numeric_limits<T>::infinity();
+
+//  Things that can be compared exactly
+    assert((std::lerp(T( 0), T(12), T(0)) == T(0)));
+    assert((std::lerp(T( 0), T(12), T(1)) == T(12)));
+    assert((std::lerp(T(12), T( 0), T(0)) == T(12)));
+    assert((std::lerp(T(12), T( 0), T(1)) == T(0)));
+
+    assert((std::lerp(T( 0), T(12), T(0.5)) == T(6)));
+    assert((std::lerp(T(12), T( 0), T(0.5)) == T(6)));
+    assert((std::lerp(T( 0), T(12), T(2))   == T(24)));
+    assert((std::lerp(T(12), T( 0), T(2))   == T(-12)));
+
+    assert((std::lerp(maxV, maxV/10, T(0)) == maxV));
+    assert((std::lerp(maxV/10, maxV, T(1)) == maxV));
+
+    assert((std::lerp(T(2.3), T(2.3), inf) == T(2.3)));
+
+    assert(std::lerp(T( 0), T( 0), T(23)) ==  T(0));
+    assert(std::isnan(std::lerp(T( 0), T( 0), inf)));
+}
+
+
+int main(int, char**)
+{
+    static_assert(constexpr_test<float>(), "");
+    static_assert(constexpr_test<double>(), "");
+    static_assert(constexpr_test<long double>(), "");
+
+    test<float>();
+    test<double>();
+    test<long double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/c.math/tgmath_h.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/c.math/tgmath_h.pass.cpp
new file mode 100644
index 0000000..50e14ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/c.math/tgmath_h.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tgmath.h>
+
+#include <tgmath.h>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/cfenv/cfenv.syn/cfenv.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/cfenv/cfenv.syn/cfenv.pass.cpp
new file mode 100644
index 0000000..557a93c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/cfenv/cfenv.syn/cfenv.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cfenv>
+
+#include <cfenv>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef FE_DIVBYZERO
+#error FE_DIVBYZERO not defined
+#endif
+
+#ifndef FE_INEXACT
+#error FE_INEXACT not defined
+#endif
+
+#ifndef FE_INVALID
+#error FE_INVALID not defined
+#endif
+
+#ifndef FE_OVERFLOW
+#error FE_OVERFLOW not defined
+#endif
+
+#ifndef FE_UNDERFLOW
+#error FE_UNDERFLOW not defined
+#endif
+
+#ifndef FE_ALL_EXCEPT
+#error FE_ALL_EXCEPT not defined
+#endif
+
+#ifndef FE_DOWNWARD
+#error FE_DOWNWARD not defined
+#endif
+
+#ifndef FE_TONEAREST
+#error FE_TONEAREST not defined
+#endif
+
+#ifndef FE_TOWARDZERO
+#error FE_TOWARDZERO not defined
+#endif
+
+#ifndef FE_UPWARD
+#error FE_UPWARD not defined
+#endif
+
+#ifndef FE_DFL_ENV
+#error FE_DFL_ENV not defined
+#endif
+
+int main(int, char**)
+{
+    std::fenv_t fenv;
+    std::fexcept_t fex;
+    ((void)fenv); // Prevent unused warning
+    ((void)fex); // Prevent unused warning
+    static_assert((std::is_same<decltype(std::feclearexcept(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fegetexceptflag(&fex, 0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::feraiseexcept(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fesetexceptflag(&fex, 0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fetestexcept(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fegetround()), int>::value), "");
+    static_assert((std::is_same<decltype(std::fesetround(0)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fegetenv(&fenv)), int>::value), "");
+    static_assert((std::is_same<decltype(std::feholdexcept(&fenv)), int>::value), "");
+    static_assert((std::is_same<decltype(std::fesetenv(&fenv)), int>::value), "");
+    static_assert((std::is_same<decltype(std::feupdateenv(&fenv)), int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cases.h b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cases.h
new file mode 100644
index 0000000..b360e14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cases.h
@@ -0,0 +1,261 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// test cases
+
+#ifndef CASES_H
+#define CASES_H
+
+#include <cassert>
+#include <complex>
+#include <type_traits>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 const std::complex<double> testcases[] =
+{
+    std::complex<double>( 1.e-6,  1.e-6),
+    std::complex<double>(-1.e-6,  1.e-6),
+    std::complex<double>(-1.e-6, -1.e-6),
+    std::complex<double>( 1.e-6, -1.e-6),
+
+    std::complex<double>( 1.e+6,  1.e-6),
+    std::complex<double>(-1.e+6,  1.e-6),
+    std::complex<double>(-1.e+6, -1.e-6),
+    std::complex<double>( 1.e+6, -1.e-6),
+
+    std::complex<double>( 1.e-6,  1.e+6),
+    std::complex<double>(-1.e-6,  1.e+6),
+    std::complex<double>(-1.e-6, -1.e+6),
+    std::complex<double>( 1.e-6, -1.e+6),
+
+    std::complex<double>( 1.e+6,  1.e+6),
+    std::complex<double>(-1.e+6,  1.e+6),
+    std::complex<double>(-1.e+6, -1.e+6),
+    std::complex<double>( 1.e+6, -1.e+6),
+
+    std::complex<double>(-0, -1.e-6),
+    std::complex<double>(-0,  1.e-6),
+    std::complex<double>(-0,  1.e+6),
+    std::complex<double>(-0, -1.e+6),
+    std::complex<double>( 0, -1.e-6),
+    std::complex<double>( 0,  1.e-6),
+    std::complex<double>( 0,  1.e+6),
+    std::complex<double>( 0, -1.e+6),
+
+    std::complex<double>(-1.e-6, -0),
+    std::complex<double>( 1.e-6, -0),
+    std::complex<double>( 1.e+6, -0),
+    std::complex<double>(-1.e+6, -0),
+    std::complex<double>(-1.e-6,  0),
+    std::complex<double>( 1.e-6,  0),
+    std::complex<double>( 1.e+6,  0),
+    std::complex<double>(-1.e+6,  0),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(-2, std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(-1, std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(-0.5, std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(-0., std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(+0., std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(0.5, std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(1, std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(2, std::numeric_limits<double>::quiet_NaN()),
+    std::complex<double>(std::numeric_limits<double>::infinity(), std::numeric_limits<double>::quiet_NaN()),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), -std::numeric_limits<double>::infinity()),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), -std::numeric_limits<double>::infinity()),
+    std::complex<double>(-2, -std::numeric_limits<double>::infinity()),
+    std::complex<double>(-1, -std::numeric_limits<double>::infinity()),
+    std::complex<double>(-0.5, -std::numeric_limits<double>::infinity()),
+    std::complex<double>(-0., -std::numeric_limits<double>::infinity()),
+    std::complex<double>(+0., -std::numeric_limits<double>::infinity()),
+    std::complex<double>(0.5, -std::numeric_limits<double>::infinity()),
+    std::complex<double>(1, -std::numeric_limits<double>::infinity()),
+    std::complex<double>(2, -std::numeric_limits<double>::infinity()),
+    std::complex<double>(std::numeric_limits<double>::infinity(), -std::numeric_limits<double>::infinity()),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), -2),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), -2),
+    std::complex<double>(-2, -2),
+    std::complex<double>(-1, -2),
+    std::complex<double>(-0.5, -2),
+    std::complex<double>(-0., -2),
+    std::complex<double>(+0., -2),
+    std::complex<double>(0.5, -2),
+    std::complex<double>(1, -2),
+    std::complex<double>(2, -2),
+    std::complex<double>(std::numeric_limits<double>::infinity(), -2),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), -1),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), -1),
+    std::complex<double>(-2, -1),
+    std::complex<double>(-1, -1),
+    std::complex<double>(-0.5, -1),
+    std::complex<double>(-0., -1),
+    std::complex<double>(+0., -1),
+    std::complex<double>(0.5, -1),
+    std::complex<double>(1, -1),
+    std::complex<double>(2, -1),
+    std::complex<double>(std::numeric_limits<double>::infinity(), -1),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), -0.5),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), -0.5),
+    std::complex<double>(-2, -0.5),
+    std::complex<double>(-1, -0.5),
+    std::complex<double>(-0.5, -0.5),
+    std::complex<double>(-0., -0.5),
+    std::complex<double>(+0., -0.5),
+    std::complex<double>(0.5, -0.5),
+    std::complex<double>(1, -0.5),
+    std::complex<double>(2, -0.5),
+    std::complex<double>(std::numeric_limits<double>::infinity(), -0.5),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), -0.),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), -0.),
+    std::complex<double>(-2, -0.),
+    std::complex<double>(-1, -0.),
+    std::complex<double>(-0.5, -0.),
+    std::complex<double>(-0., -0.),
+    std::complex<double>(+0., -0.),
+    std::complex<double>(0.5, -0.),
+    std::complex<double>(1, -0.),
+    std::complex<double>(2, -0.),
+    std::complex<double>(std::numeric_limits<double>::infinity(), -0.),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), +0.),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), +0.),
+    std::complex<double>(-2, +0.),
+    std::complex<double>(-1, +0.),
+    std::complex<double>(-0.5, +0.),
+    std::complex<double>(-0., +0.),
+    std::complex<double>(+0., +0.),
+    std::complex<double>(0.5, +0.),
+    std::complex<double>(1, +0.),
+    std::complex<double>(2, +0.),
+    std::complex<double>(std::numeric_limits<double>::infinity(), +0.),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), 0.5),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), 0.5),
+    std::complex<double>(-2, 0.5),
+    std::complex<double>(-1, 0.5),
+    std::complex<double>(-0.5, 0.5),
+    std::complex<double>(-0., 0.5),
+    std::complex<double>(+0., 0.5),
+    std::complex<double>(0.5, 0.5),
+    std::complex<double>(1, 0.5),
+    std::complex<double>(2, 0.5),
+    std::complex<double>(std::numeric_limits<double>::infinity(), 0.5),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), 1),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), 1),
+    std::complex<double>(-2, 1),
+    std::complex<double>(-1, 1),
+    std::complex<double>(-0.5, 1),
+    std::complex<double>(-0., 1),
+    std::complex<double>(+0., 1),
+    std::complex<double>(0.5, 1),
+    std::complex<double>(1, 1),
+    std::complex<double>(2, 1),
+    std::complex<double>(std::numeric_limits<double>::infinity(), 1),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), 2),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), 2),
+    std::complex<double>(-2, 2),
+    std::complex<double>(-1, 2),
+    std::complex<double>(-0.5, 2),
+    std::complex<double>(-0., 2),
+    std::complex<double>(+0., 2),
+    std::complex<double>(0.5, 2),
+    std::complex<double>(1, 2),
+    std::complex<double>(2, 2),
+    std::complex<double>(std::numeric_limits<double>::infinity(), 2),
+
+    std::complex<double>(std::numeric_limits<double>::quiet_NaN(), std::numeric_limits<double>::infinity()),
+    std::complex<double>(-std::numeric_limits<double>::infinity(), std::numeric_limits<double>::infinity()),
+    std::complex<double>(-2, std::numeric_limits<double>::infinity()),
+    std::complex<double>(-1, std::numeric_limits<double>::infinity()),
+    std::complex<double>(-0.5, std::numeric_limits<double>::infinity()),
+    std::complex<double>(-0., std::numeric_limits<double>::infinity()),
+    std::complex<double>(+0., std::numeric_limits<double>::infinity()),
+    std::complex<double>(0.5, std::numeric_limits<double>::infinity()),
+    std::complex<double>(1, std::numeric_limits<double>::infinity()),
+    std::complex<double>(2, std::numeric_limits<double>::infinity()),
+    std::complex<double>(std::numeric_limits<double>::infinity(), std::numeric_limits<double>::infinity())
+};
+
+enum {zero, non_zero, inf, NaN, non_zero_nan};
+
+template <class T, typename std::enable_if<std::is_floating_point<T>::value, int>::type = 0>
+TEST_CONSTEXPR_CXX20 bool test_isinf(T v) {
+    return v == std::numeric_limits<T>::infinity() || v == -std::numeric_limits<T>::infinity();
+}
+
+template <class T, typename std::enable_if<std::is_arithmetic<T>::value, int>::type = 0>
+TEST_CONSTEXPR_CXX20 bool test_isnan(T v) {
+    return v != v;
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+int
+classify(const std::complex<T>& x)
+{
+    if (x == std::complex<T>())
+        return zero;
+    if (test_isinf(x.real()) || test_isinf(x.imag()))
+        return inf;
+    if (test_isnan(x.real()) && test_isnan(x.imag()))
+        return NaN;
+    if (test_isnan(x.real()))
+    {
+        if (x.imag() == T(0))
+            return NaN;
+        return non_zero_nan;
+    }
+    if (test_isnan(x.imag()))
+    {
+        if (x.real() == T(0))
+            return NaN;
+        return non_zero_nan;
+    }
+    return non_zero;
+}
+
+inline
+int
+classify(double x)
+{
+    if (x == 0)
+        return zero;
+    if (std::isinf(x))
+        return inf;
+    if (std::isnan(x))
+        return NaN;
+    return non_zero;
+}
+
+void is_about(float x, float y)
+{
+    assert(std::abs((x-y)/(x+y)) < 1.e-6);
+}
+
+void is_about(double x, double y)
+{
+    assert(std::abs((x-y)/(x+y)) < 1.e-14);
+}
+
+void is_about(long double x, long double y)
+{
+    assert(std::abs((x-y)/(x+y)) < 1.e-14);
+}
+
+#endif // CASES_H
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/ccmplx/ccomplex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/ccmplx/ccomplex.pass.cpp
new file mode 100644
index 0000000..cc3f8cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/ccmplx/ccomplex.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <ccomplex>
+
+#include <ccomplex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::complex<double> d;
+    (void)d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/UDT_is_rejected.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/UDT_is_rejected.fail.cpp
new file mode 100644
index 0000000..bc0e5d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/UDT_is_rejected.fail.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// Test that UDT's convertible to an integral or floating point type do not
+// participate in overload resolution.
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+template <class IntT>
+struct UDT {
+  operator IntT() const { return 1; }
+};
+
+UDT<float> ft;
+UDT<double> dt;
+UDT<long double> ldt;
+UDT<int> it;
+UDT<unsigned long> uit;
+
+int main(int, char**)
+{
+    {
+        std::real(ft); // expected-error {{no matching function}}
+        std::real(dt); // expected-error {{no matching function}}
+        std::real(ldt); // expected-error {{no matching function}}
+        std::real(it); // expected-error {{no matching function}}
+        std::real(uit); // expected-error {{no matching function}}
+    }
+    {
+        std::imag(ft); // expected-error {{no matching function}}
+        std::imag(dt); // expected-error {{no matching function}}
+        std::imag(ldt); // expected-error {{no matching function}}
+        std::imag(it); // expected-error {{no matching function}}
+        std::imag(uit); // expected-error {{no matching function}}
+    }
+    {
+        std::arg(ft); // expected-error {{no matching function}}
+        std::arg(dt); // expected-error {{no matching function}}
+        std::arg(ldt); // expected-error {{no matching function}}
+        std::arg(it); // expected-error {{no matching function}}
+        std::arg(uit); // expected-error {{no matching function}}
+    }
+    {
+        std::norm(ft); // expected-error {{no matching function}}
+        std::norm(dt); // expected-error {{no matching function}}
+        std::norm(ldt); // expected-error {{no matching function}}
+        std::norm(it); // expected-error {{no matching function}}
+        std::norm(uit); // expected-error {{no matching function}}
+    }
+    {
+        std::conj(ft); // expected-error {{no matching function}}
+        std::conj(dt); // expected-error {{no matching function}}
+        std::conj(ldt); // expected-error {{no matching function}}
+        std::conj(it); // expected-error {{no matching function}}
+        std::conj(uit); // expected-error {{no matching function}}
+    }
+    {
+        std::proj(ft); // expected-error {{no matching function}}
+        std::proj(dt); // expected-error {{no matching function}}
+        std::proj(ldt); // expected-error {{no matching function}}
+        std::proj(it); // expected-error {{no matching function}}
+        std::proj(uit); // expected-error {{no matching function}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/arg.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/arg.pass.cpp
new file mode 100644
index 0000000..0152761
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/arg.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<Arithmetic T>
+//   T
+//   arg(T x);
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(T x, typename std::enable_if<std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::arg(x)), double>::value), "");
+    assert(std::arg(x) == arg(std::complex<double>(static_cast<double>(x), 0)));
+}
+
+template <class T>
+void
+test(T x, typename std::enable_if<!std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::arg(x)), T>::value), "");
+    assert(std::arg(x) == arg(std::complex<T>(x, 0)));
+}
+
+template <class T>
+void
+test()
+{
+    test<T>(0);
+    test<T>(1);
+    test<T>(10);
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<int>();
+    test<unsigned>();
+    test<long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/conj.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/conj.pass.cpp
new file mode 100644
index 0000000..553ead6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/conj.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>      complex<T>           conj(const complex<T>&); // constexpr in C++20
+//                        complex<long double> conj(long double);       // constexpr in C++20
+//                        complex<double>      conj(double);            // constexpr in C++20
+// template<Integral T>   complex<double>      conj(T);                 // constexpr in C++20
+//                        complex<float>       conj(float);             // constexpr in C++20
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test(T x, typename std::enable_if<std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::conj(x)), std::complex<double> >::value), "");
+    assert(std::conj(x) == conj(std::complex<double>(x, 0)));
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test(T x, typename std::enable_if<std::is_floating_point<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::conj(x)), std::complex<T> >::value), "");
+    assert(std::conj(x) == conj(std::complex<T>(x, 0)));
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test(T x, typename std::enable_if<!std::is_integral<T>::value &&
+                                  !std::is_floating_point<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::conj(x)), std::complex<T> >::value), "");
+    assert(std::conj(x) == conj(std::complex<T>(x, 0)));
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    test<T>(0);
+    test<T>(1);
+    test<T>(10);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<int>();
+    test<unsigned>();
+    test<long long>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+    static_assert(test<int>());
+    static_assert(test<unsigned>());
+    static_assert(test<long long>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/imag.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/imag.pass.cpp
new file mode 100644
index 0000000..a057812
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/imag.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<Arithmetic T>
+//   T
+//   imag(const T& x);
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T, int x>
+void
+test(typename std::enable_if<std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::imag(T(x))), double>::value), "");
+    assert(std::imag(x) == 0);
+#if TEST_STD_VER > 11
+    constexpr T val {x};
+    static_assert(std::imag(val) == 0, "");
+    constexpr std::complex<T> t{val, val};
+    static_assert(t.imag() == x, "" );
+#endif
+}
+
+template <class T, int x>
+void
+test(typename std::enable_if<!std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::imag(T(x))), T>::value), "");
+    assert(std::imag(x) == 0);
+#if TEST_STD_VER > 11
+    constexpr T val {x};
+    static_assert(std::imag(val) == 0, "");
+    constexpr std::complex<T> t{val, val};
+    static_assert(t.imag() == x, "" );
+#endif
+}
+
+template <class T>
+void
+test()
+{
+    test<T, 0>();
+    test<T, 1>();
+    test<T, 10>();
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<int>();
+    test<unsigned>();
+    test<long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp
new file mode 100644
index 0000000..c56123a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/norm.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<Arithmetic T>
+//   T
+//   norm(T x); // constexpr in C++20
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test(T x, typename std::enable_if<std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::norm(x)), double>::value), "");
+    assert(std::norm(x) == norm(std::complex<double>(static_cast<double>(x), 0)));
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test(T x, typename std::enable_if<!std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::norm(x)), T>::value), "");
+    assert(std::norm(x) == norm(std::complex<T>(x, 0)));
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    test<T>(0);
+    test<T>(1);
+    test<T>(10);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<int>();
+    test<unsigned>();
+    test<long long>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+    static_assert(test<int>());
+    static_assert(test<unsigned>());
+    static_assert(test<long long>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/pow.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/pow.pass.cpp
new file mode 100644
index 0000000..54a6cba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/pow.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<Arithmetic T, Arithmetic U>
+//   complex<promote<T, U>::type>
+//   pow(const T& x, const complex<U>& y);
+
+// template<Arithmetic T, Arithmetic U>
+//   complex<promote<T, U>::type>
+//   pow(const complex<T>& x, const U& y);
+
+// template<Arithmetic T, Arithmetic U>
+//   complex<promote<T, U>::type>
+//   pow(const complex<T>& x, const complex<U>& y);
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+double
+promote(T, typename std::enable_if<std::is_integral<T>::value>::type* = 0);
+
+float promote(float);
+double promote(double);
+long double promote(long double);
+
+template <class T, class U>
+void
+test(T x, const std::complex<U>& y)
+{
+    typedef decltype(promote(x)+promote(real(y))) V;
+    static_assert((std::is_same<decltype(std::pow(x, y)), std::complex<V> >::value), "");
+    assert(std::pow(x, y) == pow(std::complex<V>(x, 0), std::complex<V>(y)));
+}
+
+template <class T, class U>
+void
+test(const std::complex<T>& x, U y)
+{
+    typedef decltype(promote(real(x))+promote(y)) V;
+    static_assert((std::is_same<decltype(std::pow(x, y)), std::complex<V> >::value), "");
+    assert(std::pow(x, y) == pow(std::complex<V>(x), std::complex<V>(y, 0)));
+}
+
+template <class T, class U>
+void
+test(const std::complex<T>& x, const std::complex<U>& y)
+{
+    typedef decltype(promote(real(x))+promote(real(y))) V;
+    static_assert((std::is_same<decltype(std::pow(x, y)), std::complex<V> >::value), "");
+    assert(std::pow(x, y) == pow(std::complex<V>(x), std::complex<V>(y)));
+}
+
+template <class T, class U>
+void
+test(typename std::enable_if<std::is_integral<T>::value>::type* = 0, typename std::enable_if<!std::is_integral<U>::value>::type* = 0)
+{
+    test(T(3), std::complex<U>(4, 5));
+    test(std::complex<U>(3, 4), T(5));
+}
+
+template <class T, class U>
+void
+test(typename std::enable_if<!std::is_integral<T>::value>::type* = 0, typename std::enable_if<!std::is_integral<U>::value>::type* = 0)
+{
+    test(T(3), std::complex<U>(4, 5));
+    test(std::complex<T>(3, 4), U(5));
+    test(std::complex<T>(3, 4), std::complex<U>(5, 6));
+}
+
+int main(int, char**)
+{
+    test<int, float>();
+    test<int, double>();
+    test<int, long double>();
+
+    test<unsigned, float>();
+    test<unsigned, double>();
+    test<unsigned, long double>();
+
+    test<long long, float>();
+    test<long long, double>();
+    test<long long, long double>();
+
+    test<float, double>();
+    test<float, long double>();
+
+    test<double, float>();
+    test<double, long double>();
+
+    test<long double, float>();
+    test<long double, double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/proj.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/proj.pass.cpp
new file mode 100644
index 0000000..a395f6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/proj.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>    complex<T>           proj(const complex<T>&);
+//                      complex<long double> proj(long double);
+//                      complex<double>      proj(double);
+// template<Integral T> complex<double>      proj(T);
+//                      complex<float>       proj(float);
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(T x, typename std::enable_if<std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::proj(x)), std::complex<double> >::value), "");
+    assert(std::proj(x) == proj(std::complex<double>(x, 0)));
+}
+
+template <class T>
+void
+test(T x, typename std::enable_if<std::is_floating_point<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::proj(x)), std::complex<T> >::value), "");
+    assert(std::proj(x) == proj(std::complex<T>(x, 0)));
+}
+
+template <class T>
+void
+test(T x, typename std::enable_if<!std::is_integral<T>::value &&
+                                  !std::is_floating_point<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::proj(x)), std::complex<T> >::value), "");
+    assert(std::proj(x) == proj(std::complex<T>(x, 0)));
+}
+
+template <class T>
+void
+test()
+{
+    test<T>(0);
+    test<T>(1);
+    test<T>(10);
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<int>();
+    test<unsigned>();
+    test<long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/real.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/real.pass.cpp
new file mode 100644
index 0000000..41e9c8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/cmplx.over/real.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<Arithmetic T>
+//   T
+//   real(const T& x);
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T, int x>
+void
+test(typename std::enable_if<std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::real(T(x))), double>::value), "");
+    assert(std::real(x) == x);
+#if TEST_STD_VER > 11
+    constexpr T val {x};
+    static_assert(std::real(val) == val, "");
+    constexpr std::complex<T> t{val, val};
+    static_assert(t.real() == x, "" );
+#endif
+}
+
+template <class T, int x>
+void
+test(typename std::enable_if<!std::is_integral<T>::value>::type* = 0)
+{
+    static_assert((std::is_same<decltype(std::real(T(x))), T>::value), "");
+    assert(std::real(x) == x);
+#if TEST_STD_VER > 11
+    constexpr T val {x};
+    static_assert(std::real(val) == val, "");
+    constexpr std::complex<T> t{val, val};
+    static_assert(t.real() == x, "" );
+#endif
+}
+
+template <class T>
+void
+test()
+{
+    test<T, 0>();
+    test<T, 1>();
+    test<T, 10>();
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<int>();
+    test<unsigned>();
+    test<long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals.pass.cpp
new file mode 100644
index 0000000..b8f5b43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <chrono>
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using namespace std::literals::complex_literals;
+
+//  Make sure the types are right
+    static_assert ( std::is_same<decltype( 3.0il ), std::complex<long double>>::value, "" );
+    static_assert ( std::is_same<decltype( 3il   ), std::complex<long double>>::value, "" );
+    static_assert ( std::is_same<decltype( 3.0i  ), std::complex<double>>::value, "" );
+    static_assert ( std::is_same<decltype( 3i    ), std::complex<double>>::value, "" );
+    static_assert ( std::is_same<decltype( 3.0if ), std::complex<float>>::value, "" );
+    static_assert ( std::is_same<decltype( 3if   ), std::complex<float>>::value, "" );
+
+    {
+    std::complex<long double> c1 = 3.0il;
+    assert ( c1 == std::complex<long double>(0, 3.0));
+    auto c2 = 3il;
+    assert ( c1 == c2 );
+    }
+
+    {
+    std::complex<double> c1 = 3.0i;
+    assert ( c1 == std::complex<double>(0, 3.0));
+    auto c2 = 3i;
+    assert ( c1 == c2 );
+    }
+
+    {
+    std::complex<float> c1 = 3.0if;
+    assert ( c1 == std::complex<float>(0, 3.0));
+    auto c2 = 3if;
+    assert ( c1 == c2 );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals1.compile.fail.cpp
new file mode 100644
index 0000000..e67565f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals1.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::complex<float> foo  = 1.0if;  // should fail w/conversion operator not found
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals1.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals1.pass.cpp
new file mode 100644
index 0000000..8bfa0a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals1.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <chrono>
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using namespace std::literals;
+
+    {
+    std::complex<long double> c1 = 3.0il;
+    assert ( c1 == std::complex<long double>(0, 3.0));
+    auto c2 = 3il;
+    assert ( c1 == c2 );
+    }
+
+    {
+    std::complex<double> c1 = 3.0i;
+    assert ( c1 == std::complex<double>(0, 3.0));
+    auto c2 = 3i;
+    assert ( c1 == c2 );
+    }
+
+    {
+    std::complex<float> c1 = 3.0if;
+    assert ( c1 == std::complex<float>(0, 3.0));
+    auto c2 = 3if;
+    assert ( c1 == c2 );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals2.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals2.pass.cpp
new file mode 100644
index 0000000..59a1378
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.literals/literals2.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <complex>
+
+#include <complex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using namespace std;
+
+    {
+    std::complex<long double> c1 = 3.0il;
+    assert ( c1 == std::complex<long double>(0, 3.0));
+    auto c2 = 3il;
+    assert ( c1 == c2 );
+    }
+
+    {
+    std::complex<double> c1 = 3.0i;
+    assert ( c1 == std::complex<double>(0, 3.0));
+    auto c2 = 3i;
+    assert ( c1 == c2 );
+    }
+
+    {
+    std::complex<float> c1 = 3.0if;
+    assert ( c1 == std::complex<float>(0, 3.0));
+    auto c2 = 3if;
+    assert ( c1 == c2 );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_complex.pass.cpp
new file mode 100644
index 0000000..1d0e868
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_complex.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator=(const complex&);
+// template<class X> complex& operator= (const complex<X>&); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T, class X>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    std::complex<T> c2(1.5, 2.5);
+    c = c2;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 2.5);
+    std::complex<X> c3(3.5, -4.5);
+    c = c3;
+    assert(c.real() == 3.5);
+    assert(c.imag() == -4.5);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float, float>();
+    test<float, double>();
+    test<float, long double>();
+
+    test<double, float>();
+    test<double, double>();
+    test<double, long double>();
+
+    test<long double, float>();
+    test<long double, double>();
+    test<long double, long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float, float>());
+    static_assert(test<float, double>());
+    static_assert(test<float, long double>());
+
+    static_assert(test<double, float>());
+    static_assert(test<double, double>());
+    static_assert(test<double, long double>());
+
+    static_assert(test<long double, float>());
+    static_assert(test<long double, double>());
+    static_assert(test<long double, long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_scalar.pass.cpp
new file mode 100644
index 0000000..6a8c739
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/assignment_scalar.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator= (const T&); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    c = 1.5;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 0);
+    c = -1.5;
+    assert(c.real() == -1.5);
+    assert(c.imag() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/divide_equal_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/divide_equal_complex.pass.cpp
new file mode 100644
index 0000000..af2561e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/divide_equal_complex.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator/=(const complex& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c(-4, 7.5);
+    const std::complex<T> c2(1.5, 2.5);
+    assert(c.real() == -4);
+    assert(c.imag() == 7.5);
+    c /= c2;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 2.5);
+    c /= c2;
+    assert(c.real() == 1);
+    assert(c.imag() == 0);
+
+    std::complex<T> c3;
+
+    c3 = c;
+    std::complex<int> ic (1,1);
+    c3 /= ic;
+    assert(c3.real() == 0.5);
+    assert(c3.imag() == -0.5);
+
+    c3 = c;
+    std::complex<float> fc (1,1);
+    c3 /= fc;
+    assert(c3.real() == 0.5);
+    assert(c3.imag() == -0.5);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/divide_equal_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/divide_equal_scalar.pass.cpp
new file mode 100644
index 0000000..9251fb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/divide_equal_scalar.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator/=(const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c(1);
+    assert(c.real() == 1);
+    assert(c.imag() == 0);
+    c /= 0.5;
+    assert(c.real() == 2);
+    assert(c.imag() == 0);
+    c /= 0.5;
+    assert(c.real() == 4);
+    assert(c.imag() == 0);
+    c /= -0.5;
+    assert(c.real() == -8);
+    assert(c.imag() == 0);
+    c.imag(2);
+    c /= 0.5;
+    assert(c.real() == -16);
+    assert(c.imag() == 4);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_complex.pass.cpp
new file mode 100644
index 0000000..c801a70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_complex.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator-=(const complex& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    const std::complex<T> c2(1.5, 2.5);
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    c -= c2;
+    assert(c.real() == -1.5);
+    assert(c.imag() == -2.5);
+    c -= c2;
+    assert(c.real() == -3);
+    assert(c.imag() == -5);
+
+    std::complex<T> c3;
+
+    c3 = c;
+    std::complex<int> ic (1,1);
+    c3 -= ic;
+    assert(c3.real() == -4);
+    assert(c3.imag() == -6);
+
+    c3 = c;
+    std::complex<float> fc (1,1);
+    c3 -= fc;
+    assert(c3.real() == -4);
+    assert(c3.imag() == -6);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_scalar.pass.cpp
new file mode 100644
index 0000000..b9b240c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/minus_equal_scalar.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator-=(const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    c -= 1.5;
+    assert(c.real() == -1.5);
+    assert(c.imag() == 0);
+    c -= 1.5;
+    assert(c.real() == -3);
+    assert(c.imag() == 0);
+    c -= -1.5;
+    assert(c.real() == -1.5);
+    assert(c.imag() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/plus_equal_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/plus_equal_complex.pass.cpp
new file mode 100644
index 0000000..6ceb56b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/plus_equal_complex.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator+=(const complex& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    const std::complex<T> c2(1.5, 2.5);
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    c += c2;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 2.5);
+    c += c2;
+    assert(c.real() == 3);
+    assert(c.imag() == 5);
+
+    std::complex<T> c3;
+
+    c3 = c;
+    std::complex<int> ic (1,1);
+    c3 += ic;
+    assert(c3.real() == 4);
+    assert(c3.imag() == 6);
+
+    c3 = c;
+    std::complex<float> fc (1,1);
+    c3 += fc;
+    assert(c3.real() == 4);
+    assert(c3.imag() == 6);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/plus_equal_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/plus_equal_scalar.pass.cpp
new file mode 100644
index 0000000..fab151d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/plus_equal_scalar.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator+=(const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    c += 1.5;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 0);
+    c += 1.5;
+    assert(c.real() == 3);
+    assert(c.imag() == 0);
+    c += -1.5;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/times_equal_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/times_equal_complex.pass.cpp
new file mode 100644
index 0000000..6549285
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/times_equal_complex.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator*=(const complex& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c(1);
+    const std::complex<T> c2(1.5, 2.5);
+    assert(c.real() == 1);
+    assert(c.imag() == 0);
+    c *= c2;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 2.5);
+    c *= c2;
+    assert(c.real() == -4);
+    assert(c.imag() == 7.5);
+
+    std::complex<T> c3;
+
+    c3 = c;
+    std::complex<int> ic (1,1);
+    c3 *= ic;
+    assert(c3.real() == -11.5);
+    assert(c3.imag() == 3.5);
+
+    c3 = c;
+    std::complex<float> fc (1,1);
+    c3 *= fc;
+    assert(c3.real() == -11.5);
+    assert(c3.imag() == 3.5);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/times_equal_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/times_equal_scalar.pass.cpp
new file mode 100644
index 0000000..5660624
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.member.ops/times_equal_scalar.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// complex& operator*=(const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c(1);
+    assert(c.real() == 1);
+    assert(c.imag() == 0);
+    c *= 1.5;
+    assert(c.real() == 1.5);
+    assert(c.imag() == 0);
+    c *= 1.5;
+    assert(c.real() == 2.25);
+    assert(c.imag() == 0);
+    c *= -1.5;
+    assert(c.real() == -3.375);
+    assert(c.imag() == 0);
+    c.imag(2);
+    c *= 1.5;
+    assert(c.real() == -5.0625);
+    assert(c.imag() == 3);
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.members/construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.members/construct.pass.cpp
new file mode 100644
index 0000000..fa5e572
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.members/construct.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// constexpr complex(const T& re = T(), const T& im = T());
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    {
+    const std::complex<T> c;
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    }
+    {
+    const std::complex<T> c = 7.5;
+    assert(c.real() == 7.5);
+    assert(c.imag() == 0);
+    }
+    {
+    const std::complex<T> c(8.5);
+    assert(c.real() == 8.5);
+    assert(c.imag() == 0);
+    }
+    {
+    const std::complex<T> c(10.5, -9.5);
+    assert(c.real() == 10.5);
+    assert(c.imag() == -9.5);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<T> c;
+    static_assert(c.real() == 0, "");
+    static_assert(c.imag() == 0, "");
+    }
+    {
+    constexpr std::complex<T> c = 7.5;
+    static_assert(c.real() == 7.5, "");
+    static_assert(c.imag() == 0, "");
+    }
+    {
+    constexpr std::complex<T> c(8.5);
+    static_assert(c.real() == 8.5, "");
+    static_assert(c.imag() == 0, "");
+    }
+    {
+    constexpr std::complex<T> c(10.5, -9.5);
+    static_assert(c.real() == 10.5, "");
+    static_assert(c.imag() == -9.5, "");
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.members/real_imag.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.members/real_imag.pass.cpp
new file mode 100644
index 0000000..26db8dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.members/real_imag.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// void real(T val); // constexpr in C++20
+// void imag(T val); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test_constexpr()
+{
+#if TEST_STD_VER > 11
+    constexpr std::complex<T> c1;
+    static_assert(c1.real() == 0, "");
+    static_assert(c1.imag() == 0, "");
+    constexpr std::complex<T> c2(3);
+    static_assert(c2.real() == 3, "");
+    static_assert(c2.imag() == 0, "");
+    constexpr std::complex<T> c3(3, 4);
+    static_assert(c3.real() == 3, "");
+    static_assert(c3.imag() == 4, "");
+#endif
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    std::complex<T> c;
+    assert(c.real() == 0);
+    assert(c.imag() == 0);
+    c.real(3.5);
+    assert(c.real() == 3.5);
+    assert(c.imag() == 0);
+    c.imag(4.5);
+    assert(c.real() == 3.5);
+    assert(c.imag() == 4.5);
+    c.real(-4.5);
+    assert(c.real() == -4.5);
+    assert(c.imag() == 4.5);
+    c.imag(-5.5);
+    assert(c.real() == -4.5);
+    assert(c.imag() == -5.5);
+
+    test_constexpr<T>();
+    return true;
+}
+
+int main(int, char**) {
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_constexpr<int>();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_divide_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_divide_complex.pass.cpp
new file mode 100644
index 0000000..7119710
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_divide_complex.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator/(const complex<T>& lhs, const complex<T>& rhs); // constexpr in C++20
+
+// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=5000000
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    const std::complex<T> lhs(-4.0, 7.5);
+    const std::complex<T> rhs(1.5, 2.5);
+    assert(lhs / rhs == std::complex<T>(1.5, 2.5));
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20
+bool
+test_edges()
+{
+  const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+  int classification[N];
+  for (unsigned i=0; i < N; ++i)
+    classification[i] = classify(testcases[i]);
+
+  for (unsigned i = 0; i < N; ++i) {
+    for (unsigned j = 0; j < N; ++j) {
+      std::complex<double> r = testcases[i] / testcases[j];
+      switch (classification[i]) {
+      case zero:
+        switch (classification[j]) {
+        case zero:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero:
+          assert(classify(r) == zero);
+          break;
+        case inf:
+          assert(classify(r) == zero);
+          break;
+        case NaN:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero_nan:
+          assert(classify(r) == NaN);
+          break;
+        }
+        break;
+      case non_zero:
+        switch (classification[j]) {
+        case zero:
+          assert(classify(r) == inf);
+          break;
+        case non_zero:
+          assert(classify(r) == non_zero);
+          break;
+        case inf:
+          assert(classify(r) == zero);
+          break;
+        case NaN:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero_nan:
+          assert(classify(r) == NaN);
+          break;
+        }
+        break;
+      case inf:
+        switch (classification[j]) {
+        case zero:
+          assert(classify(r) == inf);
+          break;
+        case non_zero:
+          assert(classify(r) == inf);
+          break;
+        case inf:
+          assert(classify(r) == NaN);
+          break;
+        case NaN:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero_nan:
+          assert(classify(r) == NaN);
+          break;
+        }
+        break;
+      case NaN:
+        switch (classification[j]) {
+        case zero:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero:
+          assert(classify(r) == NaN);
+          break;
+        case inf:
+          assert(classify(r) == NaN);
+          break;
+        case NaN:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero_nan:
+          assert(classify(r) == NaN);
+          break;
+        }
+        break;
+      case non_zero_nan:
+        switch (classification[j]) {
+        case zero:
+          assert(classify(r) == inf);
+          break;
+        case non_zero:
+          assert(classify(r) == NaN);
+          break;
+        case inf:
+          assert(classify(r) == NaN);
+          break;
+        case NaN:
+          assert(classify(r) == NaN);
+          break;
+        case non_zero_nan:
+          assert(classify(r) == NaN);
+          break;
+        }
+        break;
+      }
+    }
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+    static_assert(test_edges());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_divide_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_divide_scalar.pass.cpp
new file mode 100644
index 0000000..b7fc9a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_divide_scalar.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator/(const complex<T>& lhs, const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    const std::complex<T> lhs(-4.0, 7.5);
+    const T rhs(2);
+    assert(lhs / rhs == std::complex<T>(-2, 3.75));
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_equals_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_equals_complex.pass.cpp
new file mode 100644
index 0000000..bf18a84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_equals_complex.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   bool
+//   operator==(const complex<T>& lhs, const complex<T>& rhs);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    std::complex<T> lhs(1.5,  2.5);
+    std::complex<T> rhs(1.5, -2.5);
+    assert( !(lhs == rhs));
+    }
+    {
+    std::complex<T> lhs(1.5, 2.5);
+    std::complex<T> rhs(1.5, 2.5);
+    assert(lhs == rhs);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_equals_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_equals_scalar.pass.cpp
new file mode 100644
index 0000000..151a356
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_equals_scalar.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   bool
+//   operator==(const complex<T>& lhs, const T& rhs);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test_constexpr()
+{
+#if TEST_STD_VER > 11
+    {
+    constexpr std::complex<T> lhs(1.5, 2.5);
+    constexpr T rhs(-2.5);
+    static_assert(!(lhs == rhs), "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5, 0);
+    constexpr T rhs(-2.5);
+    static_assert(!(lhs == rhs), "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5, 2.5);
+    constexpr T rhs(1.5);
+    static_assert(!(lhs == rhs), "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5, 0);
+    constexpr T rhs(1.5);
+    static_assert( (lhs == rhs), "");
+    }
+#endif
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    std::complex<T> lhs(1.5,  2.5);
+    T rhs(-2.5);
+    assert(!(lhs == rhs));
+    }
+    {
+    std::complex<T> lhs(1.5, 0);
+    T rhs(-2.5);
+    assert(!(lhs == rhs));
+    }
+    {
+    std::complex<T> lhs(1.5, 2.5);
+    T rhs(1.5);
+    assert(!(lhs == rhs));
+    }
+    {
+    std::complex<T> lhs(1.5, 0);
+    T rhs(1.5);
+    assert( (lhs == rhs));
+    }
+
+    test_constexpr<T> ();
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_minus_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_minus_complex.pass.cpp
new file mode 100644
index 0000000..d61f6e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_minus_complex.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator-(const complex<T>& lhs, const complex<T>& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const std::complex<T> lhs(1.5, 2.5);
+    const std::complex<T> rhs(3.5, 4.5);
+    assert(lhs - rhs == std::complex<T>(-2.0, -2.0));
+    }
+    {
+    const std::complex<T> lhs(1.5, -2.5);
+    const std::complex<T> rhs(-3.5, 4.5);
+    assert(lhs - rhs == std::complex<T>(5.0, -7.0));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_minus_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_minus_scalar.pass.cpp
new file mode 100644
index 0000000..8d4ecff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_minus_scalar.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator-(const complex<T>& lhs, const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const std::complex<T> lhs(1.5, 2.5);
+    const T rhs(3.5);
+    assert(lhs - rhs == std::complex<T>(-2.0, 2.5));
+    }
+    {
+    const std::complex<T> lhs(1.5, -2.5);
+    const T rhs(-3.5);
+    assert(lhs - rhs == std::complex<T>(5.0, -2.5));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_not_equals_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_not_equals_complex.pass.cpp
new file mode 100644
index 0000000..81adc69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_not_equals_complex.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   bool
+//   operator!=(const complex<T>& lhs, const complex<T>& rhs);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test_constexpr()
+{
+#if TEST_STD_VER > 11
+    {
+    constexpr std::complex<T> lhs(1.5,  2.5);
+    constexpr std::complex<T> rhs(1.5, -2.5);
+    static_assert(lhs != rhs, "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5, 2.5);
+    constexpr std::complex<T> rhs(1.5, 2.5);
+    static_assert(!(lhs != rhs), "" );
+    }
+#endif
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const std::complex<T> lhs(1.5,  2.5);
+    const std::complex<T> rhs(1.5, -2.5);
+    assert(lhs != rhs);
+    }
+    {
+    const std::complex<T> lhs(1.5, 2.5);
+    const std::complex<T> rhs(1.5, 2.5);
+    assert(!(lhs != rhs));
+    }
+
+    test_constexpr<T> ();
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_not_equals_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_not_equals_scalar.pass.cpp
new file mode 100644
index 0000000..702900b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_not_equals_scalar.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   bool
+//   operator!=(const complex<T>& lhs, const T& rhs);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test_constexpr()
+{
+#if TEST_STD_VER > 11
+    {
+    constexpr std::complex<T> lhs(1.5,  2.5);
+    constexpr T rhs(-2.5);
+    static_assert(lhs != rhs, "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5,  0);
+    constexpr T rhs(-2.5);
+    static_assert(lhs != rhs, "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5, 2.5);
+    constexpr T rhs(1.5);
+    static_assert(lhs != rhs, "");
+    }
+    {
+    constexpr std::complex<T> lhs(1.5, 0);
+    constexpr T rhs(1.5);
+    static_assert( !(lhs != rhs), "");
+    }
+#endif
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    std::complex<T> lhs(1.5,  2.5);
+    T rhs(-2.5);
+    assert(lhs != rhs);
+    }
+    {
+    std::complex<T> lhs(1.5,  0);
+    T rhs(-2.5);
+    assert(lhs != rhs);
+    }
+    {
+    std::complex<T> lhs(1.5, 2.5);
+    T rhs(1.5);
+    assert(lhs != rhs);
+    }
+    {
+    std::complex<T> lhs(1.5, 0);
+    T rhs(1.5);
+    assert( !(lhs != rhs));
+    }
+
+    test_constexpr<T> ();
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_plus_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_plus_complex.pass.cpp
new file mode 100644
index 0000000..f9a22f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_plus_complex.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator+(const complex<T>& lhs, const complex<T>& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const std::complex<T> lhs(1.5, 2.5);
+    const std::complex<T> rhs(3.5, 4.5);
+    assert(lhs + rhs == std::complex<T>(5.0, 7.0));
+    }
+    {
+    const std::complex<T> lhs(1.5, -2.5);
+    const std::complex<T> rhs(-3.5, 4.5);
+    assert(lhs + rhs == std::complex<T>(-2.0, 2.0));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_plus_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_plus_scalar.pass.cpp
new file mode 100644
index 0000000..e86ded7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_plus_scalar.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator+(const complex<T>& lhs, const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const std::complex<T> lhs(1.5, 2.5);
+    const T rhs(3.5);
+    assert(lhs + rhs == std::complex<T>(5.0, 2.5));
+    }
+    {
+    const std::complex<T> lhs(1.5, -2.5);
+    const T rhs(-3.5);
+    assert(lhs + rhs == std::complex<T>(-2.0, -2.5));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_times_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_times_complex.pass.cpp
new file mode 100644
index 0000000..38ec71e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_times_complex.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator*(const complex<T>& lhs, const complex<T>& rhs); // constexpr in C++20
+
+// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=5000000
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    const std::complex<T> lhs(1.5, 2.5);
+    const std::complex<T> rhs(1.5, 2.5);
+    assert(lhs * rhs == std::complex<T>(-4.0, 7.5));
+    return true;
+}
+
+// test edges
+
+TEST_CONSTEXPR_CXX20 bool test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    int classification[N];
+    for (unsigned i=0; i < N; ++i)
+        classification[i] = classify(testcases[i]);
+
+    for (unsigned i = 0; i < N; ++i)
+    {
+        for (unsigned j = 0; j < N; ++j)
+        {
+            std::complex<double> r = testcases[i] * testcases[j];
+            switch (classification[i])
+            {
+            case zero:
+                switch (classification[j])
+                {
+                case zero:
+                case non_zero:
+                    assert(classify(r) == zero);
+                    break;
+                case inf:
+                case NaN:
+                case non_zero_nan:
+                    assert(classify(r) == NaN);
+                    break;
+                }
+                break;
+            case non_zero:
+                switch (classification[j])
+                {
+                case zero:
+                    assert(classify(r) == zero);
+                    break;
+                case non_zero:
+                    assert(classify(r) == non_zero);
+                    break;
+                case inf:
+                    assert(classify(r) == inf);
+                    break;
+                case NaN:
+                case non_zero_nan:
+                    assert(classify(r) == NaN);
+                    break;
+                }
+                break;
+            case inf:
+                switch (classification[j])
+                {
+                case zero:
+                case NaN:
+                    assert(classify(r) == NaN);
+                    break;
+                case non_zero:
+                case inf:
+                case non_zero_nan:
+                    assert(classify(r) == inf);
+                    break;
+                }
+                break;
+            case NaN:
+                assert(classify(r) == NaN);
+                break;
+            case non_zero_nan:
+                switch (classification[j])
+                {
+                case inf:
+                    assert(classify(r) == inf);
+                    break;
+                case zero:
+                case non_zero:
+                case NaN:
+                case non_zero_nan:
+                    assert(classify(r) == NaN);
+                    break;
+                }
+                break;
+            }
+        }
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+    static_assert(test_edges());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_times_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_times_scalar.pass.cpp
new file mode 100644
index 0000000..19c0f22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/complex_times_scalar.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator*(const complex<T>& lhs, const T& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    const std::complex<T> lhs(1.5, 2.5);
+    const T rhs(1.5);
+    assert(lhs * rhs == std::complex<T>(2.25, 3.75));
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_divide_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_divide_complex.pass.cpp
new file mode 100644
index 0000000..5098121
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_divide_complex.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator/(const T& lhs, const complex<T>& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    const T lhs(-8.5);
+    const std::complex<T> rhs(1.5, 2.5);
+    assert(lhs / rhs == std::complex<T>(-1.5, 2.5));
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_equals_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_equals_complex.pass.cpp
new file mode 100644
index 0000000..4fe46bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_equals_complex.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   bool
+//   operator==(const T& lhs, const complex<T>& rhs);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test_constexpr()
+{
+#if TEST_STD_VER > 11
+    {
+    constexpr T lhs(-2.5);
+    constexpr std::complex<T> rhs(1.5,  2.5);
+    static_assert(!(lhs == rhs), "");
+    }
+    {
+    constexpr T lhs(-2.5);
+    constexpr std::complex<T> rhs(1.5,  0);
+    static_assert(!(lhs == rhs), "");
+    }
+    {
+    constexpr T lhs(1.5);
+    constexpr std::complex<T> rhs(1.5, 2.5);
+    static_assert(!(lhs == rhs), "");
+    }
+    {
+    constexpr T lhs(1.5);
+    constexpr std::complex<T> rhs(1.5, 0);
+    static_assert(lhs == rhs, "");
+    }
+#endif
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    T lhs(-2.5);
+    std::complex<T> rhs(1.5,  2.5);
+    assert(!(lhs == rhs));
+    }
+    {
+    T lhs(-2.5);
+    std::complex<T> rhs(1.5,  0);
+    assert(!(lhs == rhs));
+    }
+    {
+    T lhs(1.5);
+    std::complex<T> rhs(1.5, 2.5);
+    assert(!(lhs == rhs));
+    }
+    {
+    T lhs(1.5);
+    std::complex<T> rhs(1.5, 0);
+    assert(lhs == rhs);
+    }
+
+    test_constexpr<T> ();
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_minus_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_minus_complex.pass.cpp
new file mode 100644
index 0000000..126782c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_minus_complex.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator-(const T& lhs, const complex<T>& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const T lhs(1.5);
+    const std::complex<T> rhs(3.5, 4.5);
+    assert(lhs - rhs == std::complex<T>(-2.0, -4.5));
+    }
+    {
+    const T lhs(1.5);
+    const std::complex<T> rhs(-3.5, 4.5);
+    assert(lhs - rhs == std::complex<T>(5.0, -4.5));
+    }
+    return true;
+}
+
+int main(int, char**) {
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_not_equals_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_not_equals_complex.pass.cpp
new file mode 100644
index 0000000..f5be41f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_not_equals_complex.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   bool
+//   operator!=(const T& lhs, const complex<T>& rhs);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+void
+test_constexpr()
+{
+#if TEST_STD_VER > 11
+    {
+    constexpr T lhs(-2.5);
+    constexpr std::complex<T> rhs(1.5,  2.5);
+    static_assert (lhs != rhs, "");
+    }
+    {
+    constexpr T lhs(-2.5);
+    constexpr std::complex<T> rhs(1.5,  0);
+    static_assert (lhs != rhs, "");
+    }
+    {
+    constexpr T lhs(1.5);
+    constexpr std::complex<T> rhs(1.5, 2.5);
+    static_assert (lhs != rhs, "");
+    }
+    {
+    constexpr T lhs(1.5);
+    constexpr std::complex<T> rhs(1.5, 0);
+    static_assert (!(lhs != rhs), "");
+    }
+#endif
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    T lhs(-2.5);
+    std::complex<T> rhs(1.5,  2.5);
+    assert (lhs != rhs);
+    }
+    {
+    T lhs(-2.5);
+    std::complex<T> rhs(1.5,  0);
+    assert (lhs != rhs);
+    }
+    {
+    T lhs(1.5);
+    std::complex<T> rhs(1.5, 2.5);
+    assert (lhs != rhs);
+    }
+    {
+    T lhs(1.5);
+    std::complex<T> rhs(1.5, 0);
+    assert (!(lhs != rhs));
+    }
+
+    test_constexpr<T> ();
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_plus_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_plus_complex.pass.cpp
new file mode 100644
index 0000000..a2fe82e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_plus_complex.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator+(const T& lhs, const complex<T>& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    {
+    const T lhs(1.5);
+    const std::complex<T> rhs(3.5, 4.5);
+    assert(lhs + rhs == std::complex<T>(5.0, 4.5));
+    }
+    {
+    const T lhs(1.5);
+    const std::complex<T> rhs(-3.5, 4.5);
+    assert(lhs + rhs == std::complex<T>(-2.0, 4.5));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_times_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_times_complex.pass.cpp
new file mode 100644
index 0000000..4c523da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/scalar_times_complex.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator*(const T& lhs, const complex<T>& rhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    const T lhs(1.5);
+    const std::complex<T> rhs(1.5, 2.5);
+    assert(lhs * rhs == std::complex<T>(2.25, 3.75));
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/stream_input.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/stream_input.pass.cpp
new file mode 100644
index 0000000..bed585f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/stream_input.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <complex>
+
+// template<class T, class charT, class traits>
+//   basic_istream<charT, traits>&
+//   operator>>(basic_istream<charT, traits>& is, complex<T>& x);
+
+#include <complex>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream is("5");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(5, 0));
+        assert(is.eof());
+    }
+    {
+        std::istringstream is(" 5 ");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(5, 0));
+        assert(is.good());
+    }
+    {
+        std::istringstream is(" 5, ");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(5, 0));
+        assert(is.good());
+    }
+    {
+        std::istringstream is(" , 5, ");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(0, 0));
+        assert(is.fail());
+    }
+    {
+        std::istringstream is("5.5 ");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(5.5, 0));
+        assert(is.good());
+    }
+    {
+        std::istringstream is(" ( 5.5 ) ");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(5.5, 0));
+        assert(is.good());
+    }
+    {
+        std::istringstream is("  5.5)");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(5.5, 0));
+        assert(is.good());
+    }
+    {
+        std::istringstream is("(5.5 ");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(0, 0));
+        assert(is.fail());
+    }
+    {
+        std::istringstream is("(5.5,");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(0, 0));
+        assert(is.fail());
+    }
+    {
+        std::istringstream is("( -5.5 , -6.5 )");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(-5.5, -6.5));
+        assert(!is.eof());
+    }
+    {
+        std::istringstream is("(-5.5,-6.5)");
+        std::complex<double> c;
+        is >> c;
+        assert(c == std::complex<double>(-5.5, -6.5));
+        assert(!is.eof());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/stream_output.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/stream_output.pass.cpp
new file mode 100644
index 0000000..b711108
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/stream_output.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <complex>
+
+// template<class T, class charT, class traits>
+//   basic_ostream<charT, traits>&
+//   operator<<(basic_ostream<charT, traits>& o, const complex<T>& x);
+
+#include <complex>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    // Basic test
+    {
+        std::complex<double> const c(1, 2);
+        std::ostringstream os;
+        os << c;
+        assert(os.str() == "(1,2)");
+    }
+
+    // Test with various widths.
+    // In particular, make sure the width() is 0 after the operation, which
+    // should be the case because [complex.ops] says about operator<< for complex:
+    //
+    //   Effects: Inserts the complex number x onto the stream o as if it
+    //   were implemented as follows:
+    //
+    //     basic_ostringstream<charT, traits> s;
+    //     s.flags(o.flags());
+    //     s.imbue(o.getloc());
+    //     s.precision(o.precision());
+    //     s << '(' << x.real() << "," << x.imag() << ')';
+    //     return o << s.str();
+    //
+    // Since operator<< for std::string sets o.width(0), operator<< for
+    // std::complex should do the same.
+    {
+        for (int width = 0; width <= 5; ++width) {
+            std::complex<double> const c(1, 2);
+            std::ostringstream os;
+            os.width(width);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+            assert(os.str() == "(1,2)");
+        }
+        {
+            std::complex<double> const c(1, 2);
+            std::ostringstream os;
+            os.width(6);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+            assert(os.str() == "_(1,2)");
+        }
+        {
+            std::complex<double> const c(1, 2);
+            std::ostringstream os;
+            os.width(7);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+            assert(os.str() == "__(1,2)");
+        }
+        {
+            std::complex<double> const c(1, 2);
+            std::ostringstream os;
+            os.width(8);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+            assert(os.str() == "___(1,2)");
+        }
+        // Insert something after the complex and make sure the
+        // stream's width has been reset as expected.
+        {
+            std::complex<double> const c(1, 2);
+            std::ostringstream os;
+            os.width(8);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+
+            os << "hello";
+            assert(os.str() == "___(1,2)hello");
+        }
+
+        // Test with numbers that result in different output lengths, to
+        // make sure we handle custom width() correctly.
+        {
+            std::complex<double> const c(123, 456);
+            std::ostringstream os;
+            os.width(4);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+            assert(os.str() == "(123,456)");
+        }
+        {
+            std::complex<double> const c(123, 456);
+            std::ostringstream os;
+            os.width(12);
+            os.fill('_');
+            os << c;
+            assert(os.width() == 0);
+            assert(os.str() == "___(123,456)");
+
+            os << "hello";
+            assert(os.str() == "___(123,456)hello");
+        }
+
+        // Make sure left fill behaves correctly
+        {
+            std::complex<double> const c(123, 456);
+            std::ostringstream os;
+            os.width(12);
+            os.fill('_');
+            os << std::left << c;
+            assert(os.width() == 0);
+            assert(os.str() == "(123,456)___");
+
+            os << "xy";
+            assert(os.str() == "(123,456)___xy");
+        }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/unary_minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/unary_minus.pass.cpp
new file mode 100644
index 0000000..9310ac8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/unary_minus.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator-(const complex<T>& lhs); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+    assert(-std::complex<T>(1.5, -2.5) == std::complex<T>(-1.5, 2.5));
+    assert(-std::complex<T>(-1.5, 2.5) == std::complex<T>(1.5, -2.5));
+    return true;
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+#if TEST_STD_VER > 17
+    static_assert(test<float>());
+    static_assert(test<double>());
+    static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/unary_plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/unary_plus.pass.cpp
new file mode 100644
index 0000000..cfd494b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.ops/unary_plus.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   operator+(const complex<T>&); // constexpr in C++20
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+TEST_CONSTEXPR_CXX20
+bool
+test()
+{
+  assert(+std::complex<T>(1.5, -2.5) == std::complex<T>(1.5, -2.5));
+  assert(+std::complex<T>(-1.5, 2.5) == std::complex<T>(-1.5, 2.5));
+  return true;
+}
+
+int main(int, char**)
+{
+  test<float>();
+  test<double>();
+  test<long double>();
+
+#if TEST_STD_VER > 17
+  static_assert(test<float>());
+  static_assert(test<double>());
+  static_assert(test<long double>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_float_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_float_explicit.pass.cpp
new file mode 100644
index 0000000..f2e6446
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_float_explicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<double>
+// {
+// public:
+//     constexpr complex(const complex<float>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<float> cd(2.5, 3.5);
+    std::complex<double> cf(cd);
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<float> cd(2.5, 3.5);
+    constexpr std::complex<double> cf(cd);
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_float_implicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_float_implicit.pass.cpp
new file mode 100644
index 0000000..72a4f02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_float_implicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<double>
+// {
+// public:
+//     constexpr complex(const complex<float>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<float> cd(2.5, 3.5);
+    std::complex<double> cf = cd;
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<float> cd(2.5, 3.5);
+    constexpr std::complex<double> cf = cd;
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_long_double_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_long_double_explicit.pass.cpp
new file mode 100644
index 0000000..751b3b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_long_double_explicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<double>
+// {
+// public:
+//     explicit constexpr complex(const complex<long double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<long double> cd(2.5, 3.5);
+    std::complex<double> cf(cd);
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<long double> cd(2.5, 3.5);
+    constexpr std::complex<double> cf(cd);
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_long_double_implicit.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_long_double_implicit.compile.fail.cpp
new file mode 100644
index 0000000..5124231
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/double_long_double_implicit.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<double>
+// {
+// public:
+//     explicit constexpr complex(const complex<long double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+int main(int, char**)
+{
+    const std::complex<long double> cd(2.5, 3.5);
+    std::complex<double> cf = cd;
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_double_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_double_explicit.pass.cpp
new file mode 100644
index 0000000..7ed53c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_double_explicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<float>
+// {
+// public:
+//     explicit constexpr complex(const complex<double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<double> cd(2.5, 3.5);
+    std::complex<float> cf(cd);
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<double> cd(2.5, 3.5);
+    constexpr std::complex<float> cf(cd);
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_double_implicit.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_double_implicit.compile.fail.cpp
new file mode 100644
index 0000000..7274a21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_double_implicit.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<float>
+// {
+// public:
+//     explicit constexpr complex(const complex<double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+int main(int, char**)
+{
+    const std::complex<double> cd(2.5, 3.5);
+    std::complex<float> cf = cd;
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_long_double_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_long_double_explicit.pass.cpp
new file mode 100644
index 0000000..b191bf6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_long_double_explicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<float>
+// {
+// public:
+//     explicit constexpr complex(const complex<long double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<long double> cd(2.5, 3.5);
+    std::complex<float> cf(cd);
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<long double> cd(2.5, 3.5);
+    constexpr std::complex<float> cf(cd);
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_long_double_implicit.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_long_double_implicit.compile.fail.cpp
new file mode 100644
index 0000000..3bf7a03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/float_long_double_implicit.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<float>
+// {
+// public:
+//     explicit constexpr complex(const complex<long double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+int main(int, char**)
+{
+    const std::complex<long double> cd(2.5, 3.5);
+    std::complex<float> cf = cd;
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_double_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_double_explicit.pass.cpp
new file mode 100644
index 0000000..e257db2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_double_explicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<long double>
+// {
+// public:
+//     constexpr complex(const complex<double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<double> cd(2.5, 3.5);
+    std::complex<long double> cf(cd);
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<double> cd(2.5, 3.5);
+    constexpr std::complex<long double> cf(cd);
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_double_implicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_double_implicit.pass.cpp
new file mode 100644
index 0000000..b47d945
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_double_implicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<long double>
+// {
+// public:
+//     constexpr complex(const complex<double>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<double> cd(2.5, 3.5);
+    std::complex<long double> cf = cd;
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<double> cd(2.5, 3.5);
+    constexpr std::complex<long double> cf = cd;
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_float_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_float_explicit.pass.cpp
new file mode 100644
index 0000000..97f91ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_float_explicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<long double>
+// {
+// public:
+//     constexpr complex(const complex<float>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<float> cd(2.5, 3.5);
+    std::complex<long double> cf(cd);
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<float> cd(2.5, 3.5);
+    constexpr std::complex<long double> cf(cd);
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_float_implicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_float_implicit.pass.cpp
new file mode 100644
index 0000000..51e966d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.special/long_double_float_implicit.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<> class complex<long double>
+// {
+// public:
+//     constexpr complex(const complex<float>&);
+// };
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::complex<float> cd(2.5, 3.5);
+    std::complex<long double> cf = cd;
+    assert(cf.real() == cd.real());
+    assert(cf.imag() == cd.imag());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::complex<float> cd(2.5, 3.5);
+    constexpr std::complex<long double> cf = cd;
+    static_assert(cf.real() == cd.real(), "");
+    static_assert(cf.imag() == cd.imag(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.synopsis/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.synopsis/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.synopsis/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/acos.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/acos.pass.cpp
new file mode 100644
index 0000000..3158a3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/acos.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   acos(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(acos(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(INFINITY, 1), std::complex<T>(0, -INFINITY));
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = acos(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            is_about(r.real(), pi/2);
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (testcases[i].real() == 0 && std::isnan(testcases[i].imag()))
+        {
+            is_about(r.real(), pi/2);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            is_about(r.real(), pi/2);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && testcases[i].real() != 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isfinite(testcases[i].imag()))
+        {
+            is_about(r.real(), pi);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(!std::signbit(r.real()));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isinf(testcases[i].imag()))
+        {
+            is_about(r.real(), 0.75 * pi);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isinf(testcases[i].imag()))
+        {
+            is_about(r.real(), 0.25 * pi);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isinf(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) != std::signbit(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (!std::signbit(testcases[i].real()) && !std::signbit(testcases[i].imag()))
+        {
+            assert(!std::signbit(r.real()));
+            assert( std::signbit(r.imag()));
+        }
+        else if (std::signbit(testcases[i].real()) && !std::signbit(testcases[i].imag()))
+        {
+            assert(!std::signbit(r.real()));
+            assert( std::signbit(r.imag()));
+        }
+        else if (std::signbit(testcases[i].real()) && std::signbit(testcases[i].imag()))
+        {
+            assert(!std::signbit(r.real()));
+            assert(!std::signbit(r.imag()));
+        }
+        else if (!std::signbit(testcases[i].real()) && std::signbit(testcases[i].imag()))
+        {
+            assert(!std::signbit(r.real()));
+            assert(!std::signbit(r.imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/acosh.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/acosh.pass.cpp
new file mode 100644
index 0000000..424a3b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/acosh.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   acosh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(acosh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(INFINITY, 1), std::complex<T>(INFINITY, 0));
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = acosh(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(!std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (testcases[i].real() == 1 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 0);
+            assert(!std::signbit(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (testcases[i].real() == -1 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 0);
+            assert(!std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi);
+            else
+                is_about(r.imag(),  pi);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi);
+            else
+                is_about(r.imag(),  pi);
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -0.75 * pi);
+            else
+                is_about(r.imag(),  0.75 * pi);
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -0.25 * pi);
+            else
+                is_about(r.imag(),  0.25 * pi);
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else
+        {
+            assert(!std::signbit(r.real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/asin.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/asin.pass.cpp
new file mode 100644
index 0000000..51da1c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/asin.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   asin(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(asin(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = asin(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if ( testcases[i].real() == 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            if (testcases[i].real() > 0)
+                is_about(r.real(),  pi/2);
+            else
+                is_about(r.real(), - pi/2);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            if (std::signbit(testcases[i].real()))
+                is_about(r.real(), -pi/4);
+            else
+                is_about(r.real(),  pi/4);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].real()) != std::signbit(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isinf(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else
+        {
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/asinh.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/asinh.pass.cpp
new file mode 100644
index 0000000..b535092
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/asinh.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   asinh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(asinh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = asinh(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (testcases[i].real() == 0 && std::abs(testcases[i].imag()) == 1)
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/4);
+            else
+                is_about(r.imag(),  pi/4);
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else
+        {
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/atan.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/atan.pass.cpp
new file mode 100644
index 0000000..f0c8016
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/atan.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   atan(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(atan(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = atan(testcases[i]);
+        std::complex<double> t1(-imag(testcases[i]), real(testcases[i]));
+        std::complex<double> t2 = atanh(t1);
+        std::complex<double> z(imag(t2), -real(t2));
+        if (std::isnan(real(r)))
+            assert(std::isnan(real(z)));
+        else
+        {
+            assert(real(r) == real(z));
+            assert(std::signbit(real(r)) == std::signbit(real(z)));
+        }
+        if (std::isnan(imag(r)))
+            assert(std::isnan(imag(z)));
+        else
+        {
+            assert(imag(r) == imag(z));
+            assert(std::signbit(imag(r)) == std::signbit(imag(z)));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/atanh.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/atanh.pass.cpp
new file mode 100644
index 0000000..a126032
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/atanh.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   atanh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(atanh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = atanh(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if ( testcases[i].real() == 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::abs(testcases[i].real()) == 1 && testcases[i].imag() == 0)
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            if (testcases[i].imag() > 0)
+                is_about(r.imag(),  pi/2);
+            else
+                is_about(r.imag(), -pi/2);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(testcases[i].real()) == std::signbit(r.real()));
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi/2);
+            else
+                is_about(r.imag(),  pi/2);
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else
+        {
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/cos.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/cos.pass.cpp
new file mode 100644
index 0000000..0571363
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/cos.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   cos(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(cos(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(1, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = cos(testcases[i]);
+        std::complex<double> t1(-imag(testcases[i]), real(testcases[i]));
+        std::complex<double> z = cosh(t1);
+        if (std::isnan(real(r)))
+            assert(std::isnan(real(z)));
+        else
+        {
+            assert(real(r) == real(z));
+            assert(std::signbit(real(r)) == std::signbit(real(z)));
+        }
+        if (std::isnan(imag(r)))
+            assert(std::isnan(imag(z)));
+        else
+        {
+            assert(imag(r) == imag(z));
+            assert(std::signbit(imag(r)) == std::signbit(imag(z)));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/cosh.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/cosh.pass.cpp
new file mode 100644
index 0000000..ad437bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/cosh.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   cosh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(cosh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(1, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = cosh(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 1);
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (testcases[i].real() == 0 && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+        }
+        else if (testcases[i].real() == 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isinf(r.real()));
+            assert(!std::signbit(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(r.real()) == std::signbit(cos(testcases[i].imag())));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].real() * sin(testcases[i].imag())));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/exp.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/exp.pass.cpp
new file mode 100644
index 0000000..5c9574e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/exp.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   exp(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(exp(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(1, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = exp(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 1.0);
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && testcases[i].imag() == 0)
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(r.imag() == 0);
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(r.imag() == 0);
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && testcases[i].imag() != 0)
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].imag()) && std::abs(testcases[i].imag()) <= 1)
+        {
+            assert(!std::signbit(r.real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isinf(r.real()) && testcases[i].imag() == 0) {
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/log.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/log.pass.cpp
new file mode 100644
index 0000000..562d125
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/log.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   log(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(log(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(-INFINITY, 0));
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = log(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            if (std::signbit(testcases[i].real()))
+            {
+                assert(std::isinf(r.real()));
+                assert(r.real() < 0);
+                if (std::signbit(testcases[i].imag()))
+                    is_about(r.imag(), -pi);
+                else
+                    is_about(r.imag(), pi);
+            }
+            else
+            {
+                assert(std::isinf(r.real()));
+                assert(r.real() < 0);
+                assert(r.imag() == 0);
+                assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+            }
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            if (testcases[i].imag() > 0)
+                is_about(r.imag(), pi/2);
+            else
+                is_about(r.imag(), -pi/2);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()) && r.real() > 0);
+            if (r.imag() > 0)
+                is_about(r.imag(), pi);
+            else
+                is_about(r.imag(), -pi);
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()) && r.real() > 0);
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (testcases[i].real() == 1 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (testcases[i].real() == 0 && testcases[i].imag() == 1)
+        {
+            assert(r.real() == 0);
+            is_about(r.imag(), pi/2);
+        }
+        else if (testcases[i].real() == -1 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 0);
+            if (std::signbit(testcases[i].imag()))
+                is_about(r.imag(), -pi);
+            else
+                is_about(r.imag(),  pi);
+        }
+        else if (testcases[i].real() == 0 && testcases[i].imag() == -1)
+        {
+            assert(r.real() == 0);
+            is_about(r.imag(), -pi/2);
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isfinite(testcases[i].imag()) && abs(testcases[i]) < 1)
+        {
+            assert( std::signbit(r.real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isfinite(testcases[i].imag()) && abs(testcases[i]) > 1)
+        {
+            assert(!std::signbit(r.real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/log10.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/log10.pass.cpp
new file mode 100644
index 0000000..78818f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/log10.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   log10(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(log10(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(-INFINITY, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = log10(testcases[i]);
+        std::complex<double> z = log(testcases[i])/std::log(10);
+        if (std::isnan(real(r)))
+            assert(std::isnan(real(z)));
+        else
+        {
+            assert(real(r) == real(z));
+            assert(std::signbit(real(r)) == std::signbit(real(z)));
+        }
+        if (std::isnan(imag(r)))
+            assert(std::isnan(imag(z)));
+        else
+        {
+            assert(imag(r) == imag(z));
+            assert(std::signbit(imag(r)) == std::signbit(imag(z)));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_complex_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_complex_complex.pass.cpp
new file mode 100644
index 0000000..91754fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_complex_complex.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   pow(const complex<T>& x, const complex<T>& y);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& a, const std::complex<T>& b, std::complex<T> x)
+{
+    std::complex<T> c = pow(a, b);
+    is_about(real(c), real(x));
+    is_about(imag(c), imag(x));
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(2, 3), std::complex<T>(2, 0), std::complex<T>(-5, 12));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        for (unsigned j = 0; j < N; ++j)
+        {
+            std::complex<double> r = pow(testcases[i], testcases[j]);
+            std::complex<double> z = exp(testcases[j] * log(testcases[i]));
+            if (std::isnan(real(r)))
+                assert(std::isnan(real(z)));
+            else
+            {
+                assert(real(r) == real(z));
+                assert(std::signbit(real(r)) == std::signbit(real(z)));
+            }
+            if (std::isnan(imag(r)))
+                assert(std::isnan(imag(z)));
+            else
+            {
+                assert(imag(r) == imag(z));
+                assert(std::signbit(imag(r)) == std::signbit(imag(z)));
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp
new file mode 100644
index 0000000..4b1aef2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_complex_scalar.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   pow(const complex<T>& x, const T& y);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& a, const T& b, std::complex<T> x)
+{
+    std::complex<T> c = pow(a, b);
+    is_about(real(c), real(x));
+    is_about(imag(c), imag(x));
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(2, 3), T(2), std::complex<T>(-5, 12));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        for (unsigned j = 0; j < N; ++j)
+        {
+            std::complex<double> r = pow(testcases[i], real(testcases[j]));
+            std::complex<double> z = exp(std::complex<double>(real(testcases[j])) * log(testcases[i]));
+            if (std::isnan(real(r)))
+                assert(std::isnan(real(z)));
+            else
+            {
+                assert(real(r) == real(z));
+            }
+            if (std::isnan(imag(r)))
+                assert(std::isnan(imag(z)));
+            else
+            {
+                assert(imag(r) == imag(z));
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_scalar_complex.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_scalar_complex.pass.cpp
new file mode 100644
index 0000000..6022fdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/pow_scalar_complex.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   pow(const T& x, const complex<T>& y);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const T& a, const std::complex<T>& b, std::complex<T> x)
+{
+    std::complex<T> c = pow(a, b);
+    is_about(real(c), real(x));
+    assert(std::abs(imag(c)) < 1.e-6);
+}
+
+template <class T>
+void
+test()
+{
+    test(T(2), std::complex<T>(2), std::complex<T>(4));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        for (unsigned j = 0; j < N; ++j)
+        {
+            std::complex<double> r = pow(real(testcases[i]), testcases[j]);
+            std::complex<double> z = exp(testcases[j] * log(std::complex<double>(real(testcases[i]))));
+            if (std::isnan(real(r)))
+                assert(std::isnan(real(z)));
+            else
+            {
+                assert(real(r) == real(z));
+            }
+            if (std::isnan(imag(r)))
+                assert(std::isnan(imag(z)));
+            else
+            {
+                assert(imag(r) == imag(z));
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sin.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sin.pass.cpp
new file mode 100644
index 0000000..ceececa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sin.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   sin(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(sin(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = sin(testcases[i]);
+        std::complex<double> t1(-imag(testcases[i]), real(testcases[i]));
+        std::complex<double> t2 = sinh(t1);
+        std::complex<double> z(imag(t2), -real(t2));
+        if (std::isnan(real(r)))
+            assert(std::isnan(real(z)));
+        else
+        {
+            assert(real(r) == real(z));
+            assert(std::signbit(real(r)) == std::signbit(real(z)));
+        }
+        if (std::isnan(imag(r)))
+            assert(std::isnan(imag(z)));
+        else
+        {
+            assert(imag(r) == imag(z));
+            assert(std::signbit(imag(r)) == std::signbit(imag(z)));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sinh.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sinh.pass.cpp
new file mode 100644
index 0000000..933ff71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sinh.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   sinh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(sinh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = sinh(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (testcases[i].real() == 0 && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (testcases[i].real() == 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real() * cos(testcases[i].imag())));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(r.imag()) == std::signbit(sin(testcases[i].imag())));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sqrt.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sqrt.pass.cpp
new file mode 100644
index 0000000..12fd9a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/sqrt.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   sqrt(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    std::complex<T> a = sqrt(c);
+    is_about(real(a), real(x));
+    assert(std::abs(imag(c)) < 1.e-6);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(64, 0), std::complex<T>(8, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = sqrt(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(!std::signbit(r.real()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isinf(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(r.real() == 0);
+            assert(!std::signbit(r.real()));
+            assert(std::isinf(r.imag()));
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(r.imag() == 0);
+            assert(std::signbit(testcases[i].imag()) == std::signbit(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() < 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isinf(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && testcases[i].real() > 0 && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isinf(r.real()));
+            assert(r.real() > 0);
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && (std::isfinite(testcases[i].imag()) || std::isnan(testcases[i].imag())))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::signbit(testcases[i].imag()))
+        {
+            assert(!std::signbit(r.real()));
+            assert(std::signbit(r.imag()));
+        }
+        else
+        {
+            assert(!std::signbit(r.real()));
+            assert(!std::signbit(r.imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp
new file mode 100644
index 0000000..5c1f61e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/tan.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   tan(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(tan(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+    test(std::complex<T>(10000, -10000), std::complex<T>(0, -1));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = tan(testcases[i]);
+        std::complex<double> t1(-imag(testcases[i]), real(testcases[i]));
+        std::complex<double> t2 = tanh(t1);
+        std::complex<double> z(imag(t2), -real(t2));
+        if (std::isnan(real(r)))
+            assert(std::isnan(real(z)));
+        else
+        {
+            assert(real(r) == real(z));
+            assert(std::signbit(real(r)) == std::signbit(real(z)));
+        }
+        if (std::isnan(imag(r)))
+            assert(std::isnan(imag(z)));
+        else
+        {
+            assert(imag(r) == imag(z));
+            assert(std::signbit(imag(r)) == std::signbit(imag(z)));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/tanh.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/tanh.pass.cpp
new file mode 100644
index 0000000..f48cc88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.transcendentals/tanh.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   tanh(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& c, std::complex<T> x)
+{
+    assert(tanh(c) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(0, 0), std::complex<T>(0, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = tanh(testcases[i]);
+        if (testcases[i].real() == 0 && testcases[i].imag() == 0)
+        {
+            assert(r.real() == 0);
+            assert(std::signbit(r.real()) == std::signbit(testcases[i].real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isfinite(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(r.real() == (testcases[i].real() > 0 ? 1 : -1));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(sin(2 * testcases[i].imag())));
+        }
+        else if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+        {
+            assert(r.real() == (testcases[i].real() > 0 ? 1 : -1));
+            assert(r.imag() == 0);
+        }
+        else if (std::isinf(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(r.real() == (testcases[i].real() > 0 ? 1 : -1));
+            assert(r.imag() == 0);
+        }
+        else if (std::isnan(testcases[i].real()) && testcases[i].imag() == 0)
+        {
+            assert(std::isnan(r.real()));
+            assert(r.imag() == 0);
+            assert(std::signbit(r.imag()) == std::signbit(testcases[i].imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isfinite(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+        else if (std::isnan(testcases[i].real()) && std::isnan(testcases[i].imag()))
+        {
+            assert(std::isnan(r.real()));
+            assert(std::isnan(r.imag()));
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/abs.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/abs.pass.cpp
new file mode 100644
index 0000000..d5ed2a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/abs.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   T
+//   abs(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test()
+{
+    std::complex<T> z(3, 4);
+    assert(abs(z) == 5);
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        double r = abs(testcases[i]);
+        switch (classify(testcases[i]))
+        {
+        case zero:
+            assert(r == 0);
+            assert(!std::signbit(r));
+            break;
+        case non_zero:
+            assert(std::isfinite(r) && r > 0);
+            break;
+        case inf:
+            assert(std::isinf(r) && r > 0);
+            break;
+        case NaN:
+            assert(std::isnan(r));
+            break;
+        case non_zero_nan:
+            assert(std::isnan(r));
+            break;
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/arg.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/arg.pass.cpp
new file mode 100644
index 0000000..49c5437
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/arg.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   T
+//   arg(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test()
+{
+    std::complex<T> z(1, 0);
+    assert(arg(z) == 0);
+}
+
+void test_edges()
+{
+    const double pi = std::atan2(+0., -0.);
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        double r = arg(testcases[i]);
+        if (std::isnan(testcases[i].real()) || std::isnan(testcases[i].imag()))
+            assert(std::isnan(r));
+        else
+        {
+            switch (classify(testcases[i]))
+            {
+            case zero:
+                if (std::signbit(testcases[i].real()))
+                {
+                    if (std::signbit(testcases[i].imag()))
+                        is_about(r, -pi);
+                    else
+                        is_about(r, pi);
+                }
+                else
+                {
+                    assert(std::signbit(testcases[i].imag()) == std::signbit(r));
+                }
+                break;
+            case non_zero:
+                if (testcases[i].real() == 0)
+                {
+                    if (testcases[i].imag() < 0)
+                        is_about(r, -pi/2);
+                    else
+                        is_about(r, pi/2);
+                }
+                else if (testcases[i].imag() == 0)
+                {
+                    if (testcases[i].real() < 0)
+                    {
+                        if (std::signbit(testcases[i].imag()))
+                            is_about(r, -pi);
+                        else
+                            is_about(r, pi);
+                    }
+                    else
+                    {
+                        assert(r == 0);
+                        assert(std::signbit(testcases[i].imag()) == std::signbit(r));
+                    }
+                }
+                else if (testcases[i].imag() > 0)
+                    assert(r > 0);
+                else
+                    assert(r < 0);
+                break;
+            case inf:
+                if (std::isinf(testcases[i].real()) && std::isinf(testcases[i].imag()))
+                {
+                    if (testcases[i].real() < 0)
+                    {
+                        if (testcases[i].imag() > 0)
+                            is_about(r, 0.75 * pi);
+                        else
+                            is_about(r, -0.75 * pi);
+                    }
+                    else
+                    {
+                        if (testcases[i].imag() > 0)
+                            is_about(r, 0.25 * pi);
+                        else
+                            is_about(r, -0.25 * pi);
+                    }
+                }
+                else if (std::isinf(testcases[i].real()))
+                {
+                    if (testcases[i].real() < 0)
+                    {
+                        if (std::signbit(testcases[i].imag()))
+                            is_about(r, -pi);
+                        else
+                            is_about(r, pi);
+                    }
+                    else
+                    {
+                        assert(r == 0);
+                        assert(std::signbit(r) == std::signbit(testcases[i].imag()));
+                    }
+                }
+                else
+                {
+                    if (testcases[i].imag() < 0)
+                        is_about(r, -pi/2);
+                    else
+                        is_about(r, pi/2);
+                }
+                break;
+            }
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/conj.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/conj.pass.cpp
new file mode 100644
index 0000000..d24673c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/conj.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   conj(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(const std::complex<T>& z, std::complex<T> x)
+{
+    assert(conj(z) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(1, 2), std::complex<T>(1, -2));
+    test(std::complex<T>(-1, 2), std::complex<T>(-1, -2));
+    test(std::complex<T>(1, -2), std::complex<T>(1, 2));
+    test(std::complex<T>(-1, -2), std::complex<T>(-1, 2));
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/imag.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/imag.pass.cpp
new file mode 100644
index 0000000..0035823
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/imag.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   T
+//   imag(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    std::complex<T> z(1.5, 2.5);
+    assert(imag(z) == 2.5);
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/norm.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/norm.pass.cpp
new file mode 100644
index 0000000..6e6dc10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/norm.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   T
+//   norm(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test()
+{
+    std::complex<T> z(3, 4);
+    assert(norm(z) == 25);
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        double r = norm(testcases[i]);
+        switch (classify(testcases[i]))
+        {
+        case zero:
+            assert(r == 0);
+            assert(!std::signbit(r));
+            break;
+        case non_zero:
+            assert(std::isfinite(r) && r > 0);
+            break;
+        case inf:
+            assert(std::isinf(r) && r > 0);
+            break;
+        case NaN:
+            assert(std::isnan(r));
+            break;
+        case non_zero_nan:
+            assert(std::isnan(r));
+            break;
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/polar.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/polar.pass.cpp
new file mode 100644
index 0000000..2b9c764
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/polar.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   polar(const T& rho, const T& theta = T());  // changed from '0' by LWG#2870
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const T& rho, std::complex<T> x)
+{
+    assert(std::polar(rho) == x);
+}
+
+template <class T>
+void
+test(const T& rho, const T& theta, std::complex<T> x)
+{
+    assert(std::polar(rho, theta) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(T(0), std::complex<T>(0, 0));
+    test(T(1), std::complex<T>(1, 0));
+    test(T(100), std::complex<T>(100, 0));
+    test(T(0), T(0), std::complex<T>(0, 0));
+    test(T(1), T(0), std::complex<T>(1, 0));
+    test(T(100), T(0), std::complex<T>(100, 0));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        double r = real(testcases[i]);
+        double theta = imag(testcases[i]);
+        std::complex<double> z = std::polar(r, theta);
+        switch (classify(r))
+        {
+        case zero:
+            if (std::signbit(r) || classify(theta) == inf || classify(theta) == NaN)
+            {
+                int c = classify(z);
+                assert(c == NaN || c == non_zero_nan);
+            }
+            else
+            {
+                assert(z == std::complex<double>());
+            }
+            break;
+        case non_zero:
+            if (std::signbit(r) || classify(theta) == inf || classify(theta) == NaN)
+            {
+                int c = classify(z);
+                assert(c == NaN || c == non_zero_nan);
+            }
+            else
+            {
+                is_about(std::abs(z), r);
+            }
+            break;
+        case inf:
+            if (r < 0)
+            {
+                int c = classify(z);
+                assert(c == NaN || c == non_zero_nan);
+            }
+            else
+            {
+                assert(classify(z) == inf);
+                if (classify(theta) != NaN && classify(theta) != inf)
+                {
+                    assert(classify(real(z)) != NaN);
+                    assert(classify(imag(z)) != NaN);
+                }
+            }
+            break;
+        case NaN:
+        case non_zero_nan:
+            {
+                int c = classify(z);
+                assert(c == NaN || c == non_zero_nan);
+            }
+            break;
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/proj.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/proj.pass.cpp
new file mode 100644
index 0000000..e118613
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/proj.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   complex<T>
+//   proj(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../cases.h"
+
+template <class T>
+void
+test(const std::complex<T>& z, std::complex<T> x)
+{
+    assert(proj(z) == x);
+}
+
+template <class T>
+void
+test()
+{
+    test(std::complex<T>(1, 2), std::complex<T>(1, 2));
+    test(std::complex<T>(-1, 2), std::complex<T>(-1, 2));
+    test(std::complex<T>(1, -2), std::complex<T>(1, -2));
+    test(std::complex<T>(-1, -2), std::complex<T>(-1, -2));
+}
+
+void test_edges()
+{
+    const unsigned N = sizeof(testcases) / sizeof(testcases[0]);
+    for (unsigned i = 0; i < N; ++i)
+    {
+        std::complex<double> r = proj(testcases[i]);
+        switch (classify(testcases[i]))
+        {
+        case zero:
+        case non_zero:
+            assert(r == testcases[i]);
+            assert(std::signbit(real(r)) == std::signbit(real(testcases[i])));
+            assert(std::signbit(imag(r)) == std::signbit(imag(testcases[i])));
+            break;
+        case inf:
+            assert(std::isinf(real(r)) && real(r) > 0);
+            assert(imag(r) == 0);
+            assert(std::signbit(imag(r)) == std::signbit(imag(testcases[i])));
+            break;
+        case NaN:
+        case non_zero_nan:
+            assert(classify(r) == classify(testcases[i]));
+            break;
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+    test_edges();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/real.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/real.pass.cpp
new file mode 100644
index 0000000..c1d4f40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex.value.ops/real.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+//   T
+//   real(const complex<T>& x);
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    std::complex<T> z(1.5, 2.5);
+    assert(real(z) == 1.5);
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex/types.pass.cpp
new file mode 100644
index 0000000..974d02c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/complex/types.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+// template<class T>
+// class complex
+// {
+// public:
+//   typedef T value_type;
+//   ...
+// };
+
+#include <complex>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    typedef std::complex<T> C;
+    static_assert((std::is_same<typename C::value_type, T>::value), "");
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/complex.number/layout.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/layout.pass.cpp
new file mode 100644
index 0000000..d39b2de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/complex.number/layout.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <complex>
+
+#include <complex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    std::complex<T> z;
+    T* a = (T*)&z;
+    assert(0 == z.real());
+    assert(0 == z.imag());
+    assert(a[0] == z.real());
+    assert(a[1] == z.imag());
+    a[0] = 5;
+    a[1] = 6;
+    assert(a[0] == z.real());
+    assert(a[1] == z.imag());
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.access/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.access/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.access/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.cons/default.pass.cpp
new file mode 100644
index 0000000..9d9a7fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.cons/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// class glice;
+
+// gslice();
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::gslice gs;
+    assert(gs.start() == 0);
+    assert(gs.size().size() == 0);
+    assert(gs.stride().size() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.cons/start_size_stride.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.cons/start_size_stride.pass.cpp
new file mode 100644
index 0000000..1e11213
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.gslice/gslice.cons/start_size_stride.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// class glice;
+
+// gslice(size_t start, const valarray<size_t>& size,
+//                      const valarray<size_t>& stride);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::size_t a1[] = {1, 2, 3};
+    std::size_t a2[] = {4, 5, 6};
+    std::valarray<std::size_t> size(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<std::size_t> stride(a2, sizeof(a2)/sizeof(a2[0]));
+    std::gslice gs(7, size, stride);
+    assert(gs.start() == 7);
+    std::valarray<std::size_t> r = gs.size();
+    assert(r.size() == 3);
+    assert(r[0] == 1);
+    assert(r[1] == 2);
+    assert(r[2] == 3);
+    r = gs.stride();
+    assert(r.size() == 3);
+    assert(r[0] == 4);
+    assert(r[1] == 5);
+    assert(r[2] == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/cons.slice/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/cons.slice/default.pass.cpp
new file mode 100644
index 0000000..4cb92cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/cons.slice/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// class slice;
+
+// slice();
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::slice s;
+    assert(s.start() == 0);
+    assert(s.size() == 0);
+    assert(s.stride() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/cons.slice/start_size_stride.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/cons.slice/start_size_stride.pass.cpp
new file mode 100644
index 0000000..c620349
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/cons.slice/start_size_stride.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// class slice;
+
+// slice(size_t start, size_t size, size_t stride);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::slice s(1, 3, 2);
+    assert(s.start() == 1);
+    assert(s.size() == 3);
+    assert(s.stride() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/slice.access/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/slice.access/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/class.slice/slice.access/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/default.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/default.compile.fail.cpp
new file mode 100644
index 0000000..4429367
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/default.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// gslice_array() = delete;
+
+#include <valarray>
+#include <type_traits>
+
+int main(int, char**)
+{
+    std::gslice_array<int> gs;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.assign/gslice_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.assign/gslice_array.pass.cpp
new file mode 100644
index 0000000..83f2a62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.assign/gslice_array.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// const gslice_array& operator=(const gslice_array& ga) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23,
+                -24, -25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35,
+                -36, -37};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))]
+        = v2[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                            strides(st, sizeof(st)/sizeof(st[0])))];
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == -3);
+    assert(v1[ 4] == -4);
+    assert(v1[ 5] == -5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -7);
+    assert(v1[ 8] == -8);
+    assert(v1[ 9] == -9);
+    assert(v1[10] == 10);
+    assert(v1[11] == -11);
+    assert(v1[12] == -12);
+    assert(v1[13] == -13);
+    assert(v1[14] == 14);
+    assert(v1[15] == -15);
+    assert(v1[16] == -16);
+    assert(v1[17] == -17);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == -22);
+    assert(v1[23] == -23);
+    assert(v1[24] == -24);
+    assert(v1[25] == 25);
+    assert(v1[26] == -26);
+    assert(v1[27] == -27);
+    assert(v1[28] == -28);
+    assert(v1[29] == 29);
+    assert(v1[30] == -30);
+    assert(v1[31] == -31);
+    assert(v1[32] == -32);
+    assert(v1[33] == 33);
+    assert(v1[34] == -34);
+    assert(v1[35] == -35);
+    assert(v1[36] == -36);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.assign/valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.assign/valarray.pass.cpp
new file mode 100644
index 0000000..e15e211
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.assign/valarray.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] = v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == 0);
+    assert(v1[ 4] == -1);
+    assert(v1[ 5] == -2);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -3);
+    assert(v1[ 8] == -4);
+    assert(v1[ 9] == -5);
+    assert(v1[10] == 10);
+    assert(v1[11] == -6);
+    assert(v1[12] == -7);
+    assert(v1[13] == -8);
+    assert(v1[14] == 14);
+    assert(v1[15] == -9);
+    assert(v1[16] == -10);
+    assert(v1[17] == -11);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == -12);
+    assert(v1[23] == -13);
+    assert(v1[24] == -14);
+    assert(v1[25] == 25);
+    assert(v1[26] == -15);
+    assert(v1[27] == -16);
+    assert(v1[28] == -17);
+    assert(v1[29] == 29);
+    assert(v1[30] == -18);
+    assert(v1[31] == -19);
+    assert(v1[32] == -20);
+    assert(v1[33] == 33);
+    assert(v1[34] == -21);
+    assert(v1[35] == -22);
+    assert(v1[36] == -23);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/addition.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/addition.pass.cpp
new file mode 100644
index 0000000..1d6c6d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/addition.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator+= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] += v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  3);
+    assert(v1[ 5] ==  3);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  4);
+    assert(v1[ 9] ==  4);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  5);
+    assert(v1[12] ==  5);
+    assert(v1[13] ==  5);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  6);
+    assert(v1[16] ==  6);
+    assert(v1[17] ==  6);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 10);
+    assert(v1[23] == 10);
+    assert(v1[24] == 10);
+    assert(v1[25] == 25);
+    assert(v1[26] == 11);
+    assert(v1[27] == 11);
+    assert(v1[28] == 11);
+    assert(v1[29] == 29);
+    assert(v1[30] == 12);
+    assert(v1[31] == 12);
+    assert(v1[32] == 12);
+    assert(v1[33] == 33);
+    assert(v1[34] == 13);
+    assert(v1[35] == 13);
+    assert(v1[36] == 13);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/and.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/and.pass.cpp
new file mode 100644
index 0000000..934b443
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/and.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator&= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] &= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  1);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  0);
+    assert(v1[ 9] ==  0);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  3);
+    assert(v1[12] ==  8);
+    assert(v1[13] ==  9);
+    assert(v1[14] == 14);
+    assert(v1[15] == 10);
+    assert(v1[16] ==  0);
+    assert(v1[17] ==  0);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  4);
+    assert(v1[23] ==  6);
+    assert(v1[24] ==  8);
+    assert(v1[25] == 25);
+    assert(v1[26] == 16);
+    assert(v1[27] == 17);
+    assert(v1[28] == 16);
+    assert(v1[29] == 29);
+    assert(v1[30] == 18);
+    assert(v1[31] == 20);
+    assert(v1[32] ==  0);
+    assert(v1[33] == 33);
+    assert(v1[34] ==  2);
+    assert(v1[35] ==  3);
+    assert(v1[36] ==  0);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/divide.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/divide.pass.cpp
new file mode 100644
index 0000000..5e2372a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/divide.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator/= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] /= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  2);
+    assert(v1[ 5] ==  1);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  1);
+    assert(v1[ 8] ==  1);
+    assert(v1[ 9] ==  1);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  1);
+    assert(v1[12] ==  1);
+    assert(v1[13] ==  1);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  1);
+    assert(v1[16] ==  1);
+    assert(v1[17] ==  1);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  1);
+    assert(v1[23] ==  1);
+    assert(v1[24] ==  1);
+    assert(v1[25] == 25);
+    assert(v1[26] ==  1);
+    assert(v1[27] ==  1);
+    assert(v1[28] ==  1);
+    assert(v1[29] == 29);
+    assert(v1[30] ==  1);
+    assert(v1[31] ==  1);
+    assert(v1[32] ==  1);
+    assert(v1[33] == 33);
+    assert(v1[34] ==  1);
+    assert(v1[35] ==  1);
+    assert(v1[36] ==  1);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/modulo.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/modulo.pass.cpp
new file mode 100644
index 0000000..bf28902
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/modulo.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator%= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] %= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  0);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  2);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  3);
+    assert(v1[ 9] ==  3);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  4);
+    assert(v1[12] ==  4);
+    assert(v1[13] ==  4);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  5);
+    assert(v1[16] ==  5);
+    assert(v1[17] ==  5);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  9);
+    assert(v1[23] ==  9);
+    assert(v1[24] ==  9);
+    assert(v1[25] == 25);
+    assert(v1[26] == 10);
+    assert(v1[27] == 10);
+    assert(v1[28] == 10);
+    assert(v1[29] == 29);
+    assert(v1[30] == 11);
+    assert(v1[31] == 11);
+    assert(v1[32] == 11);
+    assert(v1[33] == 33);
+    assert(v1[34] == 12);
+    assert(v1[35] == 12);
+    assert(v1[36] == 12);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/multiply.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/multiply.pass.cpp
new file mode 100644
index 0000000..7f9f2c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/multiply.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator*= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] *= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  8);
+    assert(v1[ 5] == 15);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 28);
+    assert(v1[ 8] == 40);
+    assert(v1[ 9] == 54);
+    assert(v1[10] == 10);
+    assert(v1[11] == 77);
+    assert(v1[12] == 96);
+    assert(v1[13] == 117);
+    assert(v1[14] == 14);
+    assert(v1[15] == 150);
+    assert(v1[16] == 176);
+    assert(v1[17] == 204);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 286);
+    assert(v1[23] == 322);
+    assert(v1[24] == 360);
+    assert(v1[25] == 25);
+    assert(v1[26] == 416);
+    assert(v1[27] == 459);
+    assert(v1[28] == 504);
+    assert(v1[29] == 29);
+    assert(v1[30] == 570);
+    assert(v1[31] == 620);
+    assert(v1[32] == 672);
+    assert(v1[33] == 33);
+    assert(v1[34] == 748);
+    assert(v1[35] == 805);
+    assert(v1[36] == 864);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/or.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/or.pass.cpp
new file mode 100644
index 0000000..519329d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/or.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator|= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] |= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  7);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  7);
+    assert(v1[ 8] == 13);
+    assert(v1[ 9] == 15);
+    assert(v1[10] == 10);
+    assert(v1[11] == 15);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+    assert(v1[16] == 27);
+    assert(v1[17] == 29);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 31);
+    assert(v1[23] == 31);
+    assert(v1[24] == 31);
+    assert(v1[25] == 25);
+    assert(v1[26] == 26);
+    assert(v1[27] == 27);
+    assert(v1[28] == 30);
+    assert(v1[29] == 29);
+    assert(v1[30] == 31);
+    assert(v1[31] == 31);
+    assert(v1[32] == 53);
+    assert(v1[33] == 33);
+    assert(v1[34] == 54);
+    assert(v1[35] == 55);
+    assert(v1[36] == 60);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/shift_left.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/shift_left.pass.cpp
new file mode 100644
index 0000000..6837141
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/shift_left.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator<<= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] <<= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  6);
+    assert(v1[ 4] == 16);
+    assert(v1[ 5] == 40);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 112);
+    assert(v1[ 8] == 256);
+    assert(v1[ 9] == 576);
+    assert(v1[10] == 10);
+    assert(v1[11] == 1408);
+    assert(v1[12] == 3072);
+    assert(v1[13] == 6656);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15360);
+    assert(v1[16] == 32768);
+    assert(v1[17] == 69632);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 180224);
+    assert(v1[23] == 376832);
+    assert(v1[24] == 786432);
+    assert(v1[25] == 25);
+    assert(v1[26] == 1703936);
+    assert(v1[27] == 3538944);
+    assert(v1[28] == 7340032);
+    assert(v1[29] == 29);
+    assert(v1[30] == 15728640);
+    assert(v1[31] == 32505856);
+    assert(v1[32] == 67108864);
+    assert(v1[33] == 33);
+    assert(v1[34] == 142606336);
+    assert(v1[35] == 293601280);
+    assert(v1[36] == 603979776);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/shift_right.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/shift_right.pass.cpp
new file mode 100644
index 0000000..f7ab2f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/shift_right.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator>>= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] >>= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  1);
+    assert(v1[ 5] ==  0);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  0);
+    assert(v1[ 8] ==  0);
+    assert(v1[ 9] ==  0);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  0);
+    assert(v1[12] ==  0);
+    assert(v1[13] ==  0);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  0);
+    assert(v1[16] ==  0);
+    assert(v1[17] ==  0);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  0);
+    assert(v1[23] ==  0);
+    assert(v1[24] ==  0);
+    assert(v1[25] == 25);
+    assert(v1[26] ==  0);
+    assert(v1[27] ==  0);
+    assert(v1[28] ==  0);
+    assert(v1[29] == 29);
+    assert(v1[30] ==  0);
+    assert(v1[31] ==  0);
+    assert(v1[32] ==  0);
+    assert(v1[33] == 33);
+    assert(v1[34] ==  0);
+    assert(v1[35] ==  0);
+    assert(v1[36] ==  0);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/subtraction.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/subtraction.pass.cpp
new file mode 100644
index 0000000..2370ba6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/subtraction.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator-= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] -= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  2);
+    assert(v1[ 4] ==  2);
+    assert(v1[ 5] ==  2);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  3);
+    assert(v1[ 9] ==  3);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  4);
+    assert(v1[12] ==  4);
+    assert(v1[13] ==  4);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  5);
+    assert(v1[16] ==  5);
+    assert(v1[17] ==  5);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  9);
+    assert(v1[23] ==  9);
+    assert(v1[24] ==  9);
+    assert(v1[25] == 25);
+    assert(v1[26] == 10);
+    assert(v1[27] == 10);
+    assert(v1[28] == 10);
+    assert(v1[29] == 29);
+    assert(v1[30] == 11);
+    assert(v1[31] == 11);
+    assert(v1[32] == 11);
+    assert(v1[33] == 33);
+    assert(v1[34] == 12);
+    assert(v1[35] == 12);
+    assert(v1[36] == 12);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/xor.pass.cpp
new file mode 100644
index 0000000..005b07c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.comp.assign/xor.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator^= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] ^= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  2);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  6);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] == 13);
+    assert(v1[ 9] == 15);
+    assert(v1[10] == 10);
+    assert(v1[11] == 12);
+    assert(v1[12] ==  4);
+    assert(v1[13] ==  4);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  5);
+    assert(v1[16] == 27);
+    assert(v1[17] == 29);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 27);
+    assert(v1[23] == 25);
+    assert(v1[24] == 23);
+    assert(v1[25] == 25);
+    assert(v1[26] == 10);
+    assert(v1[27] == 10);
+    assert(v1[28] == 14);
+    assert(v1[29] == 29);
+    assert(v1[30] == 13);
+    assert(v1[31] == 11);
+    assert(v1[32] == 53);
+    assert(v1[33] == 33);
+    assert(v1[34] == 52);
+    assert(v1[35] == 52);
+    assert(v1[36] == 60);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.fill/assign_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.fill/assign_value.pass.cpp
new file mode 100644
index 0000000..3e8b9bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/gslice.array.fill/assign_value.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class gslice_array
+
+// void operator=(const value_type& x) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                      strides(st, sizeof(st)/sizeof(st[0])))] = 51;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == 51);
+    assert(v1[ 4] == 51);
+    assert(v1[ 5] == 51);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 51);
+    assert(v1[ 8] == 51);
+    assert(v1[ 9] == 51);
+    assert(v1[10] == 10);
+    assert(v1[11] == 51);
+    assert(v1[12] == 51);
+    assert(v1[13] == 51);
+    assert(v1[14] == 14);
+    assert(v1[15] == 51);
+    assert(v1[16] == 51);
+    assert(v1[17] == 51);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 51);
+    assert(v1[23] == 51);
+    assert(v1[24] == 51);
+    assert(v1[25] == 25);
+    assert(v1[26] == 51);
+    assert(v1[27] == 51);
+    assert(v1[28] == 51);
+    assert(v1[29] == 29);
+    assert(v1[30] == 51);
+    assert(v1[31] == 51);
+    assert(v1[32] == 51);
+    assert(v1[33] == 33);
+    assert(v1[34] == 51);
+    assert(v1[35] == 51);
+    assert(v1[36] == 51);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/types.pass.cpp
new file mode 100644
index 0000000..92bb856
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.gslice.array/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T>
+// class gslice_array
+// {
+// public:
+//     typedef T value_type;
+
+#include <valarray>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::gslice_array<int>::value_type, int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/default.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/default.compile.fail.cpp
new file mode 100644
index 0000000..988cdad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/default.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// indirect_array() = delete;
+
+#include <valarray>
+#include <type_traits>
+
+int main(int, char**)
+{
+    std::indirect_array<int> ia;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.assign/indirect_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.assign/indirect_array.pass.cpp
new file mode 100644
index 0000000..b0fed04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.assign/indirect_array.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// const indirect_array& operator=(const indirect_array& ia) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23,
+                -24, -25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35,
+                -36, -37};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                       22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    const std::size_t S = sizeof(s)/sizeof(s[0]);
+    std::valarray<int> v1(a1, N1);
+    const std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, S);
+    v1[ia] = v2[ia];
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == -3);
+    assert(v1[ 4] == -4);
+    assert(v1[ 5] == -5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -7);
+    assert(v1[ 8] == -8);
+    assert(v1[ 9] == -9);
+    assert(v1[10] == 10);
+    assert(v1[11] == -11);
+    assert(v1[12] == -12);
+    assert(v1[13] == -13);
+    assert(v1[14] == 14);
+    assert(v1[15] == -15);
+    assert(v1[16] == -16);
+    assert(v1[17] == -17);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == -22);
+    assert(v1[23] == -23);
+    assert(v1[24] == -24);
+    assert(v1[25] == 25);
+    assert(v1[26] == -26);
+    assert(v1[27] == -27);
+    assert(v1[28] == -28);
+    assert(v1[29] == 29);
+    assert(v1[30] == -30);
+    assert(v1[31] == -31);
+    assert(v1[32] == -32);
+    assert(v1[33] == 33);
+    assert(v1[34] == -34);
+    assert(v1[35] == -35);
+    assert(v1[36] == -36);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.assign/valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.assign/valarray.pass.cpp
new file mode 100644
index 0000000..e912cc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.assign/valarray.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] = v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == 0);
+    assert(v1[ 4] == -1);
+    assert(v1[ 5] == -2);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -3);
+    assert(v1[ 8] == -4);
+    assert(v1[ 9] == -5);
+    assert(v1[10] == 10);
+    assert(v1[11] == -6);
+    assert(v1[12] == -7);
+    assert(v1[13] == -8);
+    assert(v1[14] == 14);
+    assert(v1[15] == -9);
+    assert(v1[16] == -10);
+    assert(v1[17] == -11);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == -12);
+    assert(v1[23] == -13);
+    assert(v1[24] == -14);
+    assert(v1[25] == 25);
+    assert(v1[26] == -15);
+    assert(v1[27] == -16);
+    assert(v1[28] == -17);
+    assert(v1[29] == 29);
+    assert(v1[30] == -18);
+    assert(v1[31] == -19);
+    assert(v1[32] == -20);
+    assert(v1[33] == 33);
+    assert(v1[34] == -21);
+    assert(v1[35] == -22);
+    assert(v1[36] == -23);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/addition.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/addition.pass.cpp
new file mode 100644
index 0000000..4073ace
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/addition.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator+=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] += v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  3);
+    assert(v1[ 5] ==  3);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  4);
+    assert(v1[ 9] ==  4);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  5);
+    assert(v1[12] ==  5);
+    assert(v1[13] ==  5);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  6);
+    assert(v1[16] ==  6);
+    assert(v1[17] ==  6);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 10);
+    assert(v1[23] == 10);
+    assert(v1[24] == 10);
+    assert(v1[25] == 25);
+    assert(v1[26] == 11);
+    assert(v1[27] == 11);
+    assert(v1[28] == 11);
+    assert(v1[29] == 29);
+    assert(v1[30] == 12);
+    assert(v1[31] == 12);
+    assert(v1[32] == 12);
+    assert(v1[33] == 33);
+    assert(v1[34] == 13);
+    assert(v1[35] == 13);
+    assert(v1[36] == 13);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/and.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/and.pass.cpp
new file mode 100644
index 0000000..49dee00
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/and.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator&=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] &= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  1);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  0);
+    assert(v1[ 9] ==  0);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  3);
+    assert(v1[12] ==  8);
+    assert(v1[13] ==  9);
+    assert(v1[14] == 14);
+    assert(v1[15] == 10);
+    assert(v1[16] ==  0);
+    assert(v1[17] ==  0);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  4);
+    assert(v1[23] ==  6);
+    assert(v1[24] ==  8);
+    assert(v1[25] == 25);
+    assert(v1[26] == 16);
+    assert(v1[27] == 17);
+    assert(v1[28] == 16);
+    assert(v1[29] == 29);
+    assert(v1[30] == 18);
+    assert(v1[31] == 20);
+    assert(v1[32] ==  0);
+    assert(v1[33] == 33);
+    assert(v1[34] ==  2);
+    assert(v1[35] ==  3);
+    assert(v1[36] ==  0);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/divide.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/divide.pass.cpp
new file mode 100644
index 0000000..70a9395
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/divide.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator/=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] /= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  2);
+    assert(v1[ 5] ==  1);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  1);
+    assert(v1[ 8] ==  1);
+    assert(v1[ 9] ==  1);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  1);
+    assert(v1[12] ==  1);
+    assert(v1[13] ==  1);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  1);
+    assert(v1[16] ==  1);
+    assert(v1[17] ==  1);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  1);
+    assert(v1[23] ==  1);
+    assert(v1[24] ==  1);
+    assert(v1[25] == 25);
+    assert(v1[26] ==  1);
+    assert(v1[27] ==  1);
+    assert(v1[28] ==  1);
+    assert(v1[29] == 29);
+    assert(v1[30] ==  1);
+    assert(v1[31] ==  1);
+    assert(v1[32] ==  1);
+    assert(v1[33] == 33);
+    assert(v1[34] ==  1);
+    assert(v1[35] ==  1);
+    assert(v1[36] ==  1);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/modulo.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/modulo.pass.cpp
new file mode 100644
index 0000000..885589f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/modulo.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator%=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] %= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  0);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  2);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  3);
+    assert(v1[ 9] ==  3);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  4);
+    assert(v1[12] ==  4);
+    assert(v1[13] ==  4);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  5);
+    assert(v1[16] ==  5);
+    assert(v1[17] ==  5);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  9);
+    assert(v1[23] ==  9);
+    assert(v1[24] ==  9);
+    assert(v1[25] == 25);
+    assert(v1[26] == 10);
+    assert(v1[27] == 10);
+    assert(v1[28] == 10);
+    assert(v1[29] == 29);
+    assert(v1[30] == 11);
+    assert(v1[31] == 11);
+    assert(v1[32] == 11);
+    assert(v1[33] == 33);
+    assert(v1[34] == 12);
+    assert(v1[35] == 12);
+    assert(v1[36] == 12);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/multiply.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/multiply.pass.cpp
new file mode 100644
index 0000000..6665022
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/multiply.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator*=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] *= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  8);
+    assert(v1[ 5] == 15);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 28);
+    assert(v1[ 8] == 40);
+    assert(v1[ 9] == 54);
+    assert(v1[10] == 10);
+    assert(v1[11] == 77);
+    assert(v1[12] == 96);
+    assert(v1[13] == 117);
+    assert(v1[14] == 14);
+    assert(v1[15] == 150);
+    assert(v1[16] == 176);
+    assert(v1[17] == 204);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 286);
+    assert(v1[23] == 322);
+    assert(v1[24] == 360);
+    assert(v1[25] == 25);
+    assert(v1[26] == 416);
+    assert(v1[27] == 459);
+    assert(v1[28] == 504);
+    assert(v1[29] == 29);
+    assert(v1[30] == 570);
+    assert(v1[31] == 620);
+    assert(v1[32] == 672);
+    assert(v1[33] == 33);
+    assert(v1[34] == 748);
+    assert(v1[35] == 805);
+    assert(v1[36] == 864);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/or.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/or.pass.cpp
new file mode 100644
index 0000000..73ba5a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/or.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator|=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] |= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  7);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  7);
+    assert(v1[ 8] == 13);
+    assert(v1[ 9] == 15);
+    assert(v1[10] == 10);
+    assert(v1[11] == 15);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+    assert(v1[16] == 27);
+    assert(v1[17] == 29);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 31);
+    assert(v1[23] == 31);
+    assert(v1[24] == 31);
+    assert(v1[25] == 25);
+    assert(v1[26] == 26);
+    assert(v1[27] == 27);
+    assert(v1[28] == 30);
+    assert(v1[29] == 29);
+    assert(v1[30] == 31);
+    assert(v1[31] == 31);
+    assert(v1[32] == 53);
+    assert(v1[33] == 33);
+    assert(v1[34] == 54);
+    assert(v1[35] == 55);
+    assert(v1[36] == 60);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/shift_left.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/shift_left.pass.cpp
new file mode 100644
index 0000000..95a3624
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/shift_left.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator<<=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] <<= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  6);
+    assert(v1[ 4] == 16);
+    assert(v1[ 5] == 40);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 112);
+    assert(v1[ 8] == 256);
+    assert(v1[ 9] == 576);
+    assert(v1[10] == 10);
+    assert(v1[11] == 1408);
+    assert(v1[12] == 3072);
+    assert(v1[13] == 6656);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15360);
+    assert(v1[16] == 32768);
+    assert(v1[17] == 69632);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 180224);
+    assert(v1[23] == 376832);
+    assert(v1[24] == 786432);
+    assert(v1[25] == 25);
+    assert(v1[26] == 1703936);
+    assert(v1[27] == 3538944);
+    assert(v1[28] == 7340032);
+    assert(v1[29] == 29);
+    assert(v1[30] == 15728640);
+    assert(v1[31] == 32505856);
+    assert(v1[32] == 67108864);
+    assert(v1[33] == 33);
+    assert(v1[34] == 142606336);
+    assert(v1[35] == 293601280);
+    assert(v1[36] == 603979776);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/shift_right.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/shift_right.pass.cpp
new file mode 100644
index 0000000..262494d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/shift_right.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator>>=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] >>= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  1);
+    assert(v1[ 5] ==  0);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  0);
+    assert(v1[ 8] ==  0);
+    assert(v1[ 9] ==  0);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  0);
+    assert(v1[12] ==  0);
+    assert(v1[13] ==  0);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  0);
+    assert(v1[16] ==  0);
+    assert(v1[17] ==  0);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  0);
+    assert(v1[23] ==  0);
+    assert(v1[24] ==  0);
+    assert(v1[25] == 25);
+    assert(v1[26] ==  0);
+    assert(v1[27] ==  0);
+    assert(v1[28] ==  0);
+    assert(v1[29] == 29);
+    assert(v1[30] ==  0);
+    assert(v1[31] ==  0);
+    assert(v1[32] ==  0);
+    assert(v1[33] == 33);
+    assert(v1[34] ==  0);
+    assert(v1[35] ==  0);
+    assert(v1[36] ==  0);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/subtraction.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/subtraction.pass.cpp
new file mode 100644
index 0000000..b6f85eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/subtraction.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator-=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] -= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  2);
+    assert(v1[ 4] ==  2);
+    assert(v1[ 5] ==  2);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  3);
+    assert(v1[ 9] ==  3);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  4);
+    assert(v1[12] ==  4);
+    assert(v1[13] ==  4);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  5);
+    assert(v1[16] ==  5);
+    assert(v1[17] ==  5);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] ==  9);
+    assert(v1[23] ==  9);
+    assert(v1[24] ==  9);
+    assert(v1[25] == 25);
+    assert(v1[26] == 10);
+    assert(v1[27] == 10);
+    assert(v1[28] == 10);
+    assert(v1[29] == 29);
+    assert(v1[30] == 11);
+    assert(v1[31] == 11);
+    assert(v1[32] == 11);
+    assert(v1[33] == 33);
+    assert(v1[34] == 12);
+    assert(v1[35] == 12);
+    assert(v1[36] == 12);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/xor.pass.cpp
new file mode 100644
index 0000000..57f7af4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.comp.assign/xor.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator^=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
+                 13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                         22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    std::valarray<std::size_t> ia(s, N2);
+    v1[ia] ^= v2;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  2);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  6);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] == 13);
+    assert(v1[ 9] == 15);
+    assert(v1[10] == 10);
+    assert(v1[11] == 12);
+    assert(v1[12] ==  4);
+    assert(v1[13] ==  4);
+    assert(v1[14] == 14);
+    assert(v1[15] ==  5);
+    assert(v1[16] == 27);
+    assert(v1[17] == 29);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 27);
+    assert(v1[23] == 25);
+    assert(v1[24] == 23);
+    assert(v1[25] == 25);
+    assert(v1[26] == 10);
+    assert(v1[27] == 10);
+    assert(v1[28] == 14);
+    assert(v1[29] == 29);
+    assert(v1[30] == 13);
+    assert(v1[31] == 11);
+    assert(v1[32] == 53);
+    assert(v1[33] == 33);
+    assert(v1[34] == 52);
+    assert(v1[35] == 52);
+    assert(v1[36] == 60);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.fill/assign_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.fill/assign_value.pass.cpp
new file mode 100644
index 0000000..49f8540
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/indirect.array.fill/assign_value.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class indirect_array
+
+// void operator=(const value_type& x) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    std::size_t s[] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                       22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    const std::size_t S = sizeof(s)/sizeof(s[0]);
+    std::valarray<int> v1(a1, N1);
+    std::valarray<std::size_t> ia(s, S);
+    v1[ia] = 51;
+    assert(v1.size() == 41);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == 51);
+    assert(v1[ 4] == 51);
+    assert(v1[ 5] == 51);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 51);
+    assert(v1[ 8] == 51);
+    assert(v1[ 9] == 51);
+    assert(v1[10] == 10);
+    assert(v1[11] == 51);
+    assert(v1[12] == 51);
+    assert(v1[13] == 51);
+    assert(v1[14] == 14);
+    assert(v1[15] == 51);
+    assert(v1[16] == 51);
+    assert(v1[17] == 51);
+    assert(v1[18] == 18);
+    assert(v1[19] == 19);
+    assert(v1[20] == 20);
+    assert(v1[21] == 21);
+    assert(v1[22] == 51);
+    assert(v1[23] == 51);
+    assert(v1[24] == 51);
+    assert(v1[25] == 25);
+    assert(v1[26] == 51);
+    assert(v1[27] == 51);
+    assert(v1[28] == 51);
+    assert(v1[29] == 29);
+    assert(v1[30] == 51);
+    assert(v1[31] == 51);
+    assert(v1[32] == 51);
+    assert(v1[33] == 33);
+    assert(v1[34] == 51);
+    assert(v1[35] == 51);
+    assert(v1[36] == 51);
+    assert(v1[37] == 37);
+    assert(v1[38] == 38);
+    assert(v1[39] == 39);
+    assert(v1[40] == 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/types.pass.cpp
new file mode 100644
index 0000000..d51eaf2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.indirect.array/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T>
+// class indirect_array
+// {
+// public:
+//     typedef T value_type;
+
+#include <valarray>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::indirect_array<int>::value_type, int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/default.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/default.compile.fail.cpp
new file mode 100644
index 0000000..f22298b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/default.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// mask_array() = delete;
+
+#include <valarray>
+#include <type_traits>
+
+int main(int, char**)
+{
+    std::mask_array<int> s;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/mask_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/mask_array.pass.cpp
new file mode 100644
index 0000000..500341a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/mask_array.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void mask_array& operator=(const mask_array& ma) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    bool b1[N1] = {true,  false, false, true,  true,  false,
+                   false, true,  false, false, false, true};
+    int a2[] = {-1, -2, -3, -4, -5, -6, -7, -8};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b2[N2] = {true,  false, true, true,
+                   false, false, true, true};
+    std::valarray<int> v1(a1, N1);
+    const std::valarray<int> v2(a2, N2);
+    std::valarray<bool> vb1(b1, N1);
+    std::valarray<bool> vb2(b2, N2);
+    v1[vb1] = v2[vb2];
+    assert(v1.size() == 16);
+    assert(v1[ 0] == -1);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == -3);
+    assert(v1[ 4] == -4);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -7);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == -8);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+    }
+    // Test return value of assignment
+    {
+    int a1[] = {0, 1, 2};
+    int a2[] = {3, 4, 5};
+    bool b1[] = {true, false, true};
+    std::valarray<int> v1(a1, 3);
+    std::valarray<int> v2(a2, 3);
+    std::valarray<bool> const vb1(b1, 3);
+    std::mask_array<int> m1 = v1[vb1];
+    std::mask_array<int> const m2 = v2[vb1];
+    std::mask_array<int> const & r = (m1 = m2);
+    assert(&r == &m1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/valarray.pass.cpp
new file mode 100644
index 0000000..d3f8284
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.assign/valarray.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] = v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  1);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  2);
+    assert(v1[ 4] ==  3);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  5);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/addition.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/addition.pass.cpp
new file mode 100644
index 0000000..6c04651
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/addition.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator+=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] += v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  1);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  5);
+    assert(v1[ 4] ==  7);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 11);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == 16);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/and.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/and.pass.cpp
new file mode 100644
index 0000000..f9c73be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/and.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator&=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] &= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  2);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  1);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/divide.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/divide.pass.cpp
new file mode 100644
index 0000000..3c43ded
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/divide.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator/=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] /= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  1);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  1);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  2);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/modulo.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/modulo.pass.cpp
new file mode 100644
index 0000000..0a1054c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/modulo.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator%=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] %= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  1);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  1);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/multiply.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/multiply.pass.cpp
new file mode 100644
index 0000000..37936e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/multiply.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator*=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] *= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  6);
+    assert(v1[ 4] == 12);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 28);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == 55);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/or.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/or.pass.cpp
new file mode 100644
index 0000000..c3d72c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/or.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator|=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] |= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  1);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  7);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  7);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == 15);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/shift_left.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/shift_left.pass.cpp
new file mode 100644
index 0000000..7322edf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/shift_left.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator<<=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] <<= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == 12);
+    assert(v1[ 4] == 32);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 112);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == 352);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/shift_right.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/shift_right.pass.cpp
new file mode 100644
index 0000000..1b17173
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/shift_right.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator>>=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] >>= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  0);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  0);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  0);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/subtraction.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/subtraction.pass.cpp
new file mode 100644
index 0000000..173a97d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/subtraction.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator-=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] -= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] == -1);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  1);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] ==  6);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/xor.pass.cpp
new file mode 100644
index 0000000..75553c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.comp.assign/xor.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator^=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    int a2[] = {1, 2, 3, 4, 5};
+    const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<int> v2(a2, N2);
+    assert(N2 == std::count(b, b+N1, true));
+    std::valarray<bool> vb(b, N1);
+    v1[vb] ^= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  1);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  1);
+    assert(v1[ 4] ==  7);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == 14);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.fill/assign_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.fill/assign_value.pass.cpp
new file mode 100644
index 0000000..5ea3df4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/mask.array.fill/assign_value.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class mask_array
+
+// void operator=(const value_type& x) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<bool> vb(b, N1);
+    v1[vb] = -5;
+    assert(v1.size() == 16);
+    assert(v1[ 0] == -5);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] == -5);
+    assert(v1[ 4] == -5);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -5);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 10);
+    assert(v1[11] == -5);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/types.pass.cpp
new file mode 100644
index 0000000..fff3f63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.mask.array/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T>
+// class mask_array
+// {
+// public:
+//     typedef T value_type;
+
+#include <valarray>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::mask_array<int>::value_type, int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/default.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/default.compile.fail.cpp
new file mode 100644
index 0000000..90b1845
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/default.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// slice_array() = delete;
+
+#include <valarray>
+#include <type_traits>
+
+int main(int, char**)
+{
+    std::slice_array<int> s;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/slice_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/slice_array.pass.cpp
new file mode 100644
index 0000000..039221a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/slice_array.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// const slice_array& operator=(const slice_array& sa) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] = v2[std::slice(2, 5, 2)];
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] == -3);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] == -5);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -7);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == -9);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == -11);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+    }
+    // Test return value of assignment.
+    {
+    int a1[] = {0, 1, 2};
+    std::valarray<int> v1(a1, 3);
+    std::slice_array<int> s1 = v1[std::slice(1, 1, 1)];
+    std::slice_array<int> s2 = v1[std::slice(0, 1, 1)];
+    std::slice_array<int> const & s3 = (s1 = s2);
+    assert(&s1 == &s3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/template.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/template.pass.cpp
new file mode 100644
index 0000000..de2ffce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/template.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator=(const T& value) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    double a[] = { 0, 0, 0 };
+    std::valarray<double> m(a, sizeof(a)/sizeof(a[0]));
+    std::slice_array<double> s = m[std::slice(0, 3, 1)];
+    s = 42;
+    assert(m[0] == 42);
+    assert(m[1] == 42);
+    assert(m[2] == 42);
+
+    ASSERT_SAME_TYPE(decltype(s = 42), void);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/valarray.pass.cpp
new file mode 100644
index 0000000..a09ef79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.assign/valarray.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    std::slice_array<int> s1 = v1[std::slice(1, 5, 3)];
+    s1 = v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] == -1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] == -2);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -3);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == -4);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == -5);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+    ASSERT_SAME_TYPE(decltype(s1 = v2), void);
+
+// The initializer list constructor is disabled in C++03 mode.
+#if TEST_STD_VER > 03
+    std::valarray<double> m = { 0, 0, 0 };
+    std::slice_array<double> s2 = m[std::slice(0, 3, 1)];
+    s2 = { 1, 2, 3 };
+    assert(m[0] == 1);
+    assert(m[1] == 2);
+    assert(m[2] == 3);
+
+    ASSERT_SAME_TYPE(decltype(s2 = {1, 2, 3}), void);
+#endif // TEST_STD_VER > 03
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/addition.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/addition.pass.cpp
new file mode 100644
index 0000000..6037471
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/addition.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator+= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] += v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  0);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  2);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] ==  6);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] ==  8);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/and.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/and.pass.cpp
new file mode 100644
index 0000000..1d7d4c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/and.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator&= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] &= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  3);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] ==  0);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] ==  5);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/divide.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/divide.pass.cpp
new file mode 100644
index 0000000..b55a1f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/divide.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator/= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] /= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] == -1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] == -2);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -2);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == -2);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == -2);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/modulo.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/modulo.pass.cpp
new file mode 100644
index 0000000..f474438
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/modulo.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator%= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] %= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  0);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  0);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  1);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] ==  2);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] ==  3);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/multiply.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/multiply.pass.cpp
new file mode 100644
index 0000000..ebfbcf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/multiply.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator*= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] *= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] == -1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] == -8);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == -21);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == -40);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == -65);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/or.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/or.pass.cpp
new file mode 100644
index 0000000..70d3345
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/or.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator|= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] |= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  1);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  7);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 14);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == 13);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/shift_left.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/shift_left.pass.cpp
new file mode 100644
index 0000000..2fb286c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/shift_left.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator<<=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] <<= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  2);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] == 16);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 56);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 160);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == 416);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/shift_right.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/shift_right.pass.cpp
new file mode 100644
index 0000000..5923a24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/shift_right.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator>>=(const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] >>= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  0);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  1);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  0);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] ==  0);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] ==  0);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/subtraction.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/subtraction.pass.cpp
new file mode 100644
index 0000000..656fbb1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/subtraction.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator-= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {-1, -2, -3, -4, -5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] -= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  2);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 10);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 14);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == 18);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/xor.pass.cpp
new file mode 100644
index 0000000..cd8a1b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.comp.assign/xor.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator^= (const valarray<value_type>& v) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    int a2[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+    v1[std::slice(1, 5, 3)] ^= v2;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] ==  0);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] ==  6);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] ==  4);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 14);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] ==  8);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.fill/assign_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.fill/assign_value.pass.cpp
new file mode 100644
index 0000000..56f2a4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/slice.arr.fill/assign_value.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T> class slice_array
+
+// void operator=(const value_type& x) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+    v1[std::slice(1, 5, 3)] = 20;
+    assert(v1.size() == 16);
+    assert(v1[ 0] ==  0);
+    assert(v1[ 1] == 20);
+    assert(v1[ 2] ==  2);
+    assert(v1[ 3] ==  3);
+    assert(v1[ 4] == 20);
+    assert(v1[ 5] ==  5);
+    assert(v1[ 6] ==  6);
+    assert(v1[ 7] == 20);
+    assert(v1[ 8] ==  8);
+    assert(v1[ 9] ==  9);
+    assert(v1[10] == 20);
+    assert(v1[11] == 11);
+    assert(v1[12] == 12);
+    assert(v1[13] == 20);
+    assert(v1[14] == 14);
+    assert(v1[15] == 15);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/types.pass.cpp
new file mode 100644
index 0000000..33d6bbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.slice.array/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template <class T>
+// class slice_array
+// {
+// public:
+//     typedef T value_type;
+
+#include <valarray>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::slice_array<int>::value_type, int>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/types.pass.cpp
new file mode 100644
index 0000000..3d7e04a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/types.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T>
+// class valarray
+// {
+// public:
+//     typedef T value_type;
+//     ...
+
+#include <valarray>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::valarray<int>::value_type, int>::value), "");
+    static_assert((std::is_same<std::valarray<double>::value_type, double>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.access/access.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.access/access.pass.cpp
new file mode 100644
index 0000000..4a72cc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.access/access.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// value_type& operator[](size_t i);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {5, 4, 3, 2, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v[i] == a[i]);
+            v[i] = i;
+            assert(v[i] == static_cast<int>(i));
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.access/const_access.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.access/const_access.pass.cpp
new file mode 100644
index 0000000..ef9ac71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.access/const_access.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// const value_type& operator[](size_t i) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {5, 4, 3, 2, 1};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        const std::valarray<T> v(a, N);
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v[i] == a[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/copy_assign.pass.cpp
new file mode 100644
index 0000000..b216c67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/copy_assign.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct S
+{
+    S() : x_(0) { default_ctor_called = true; }
+    S(int x) : x_(x) {}
+    int x_;
+    static bool default_ctor_called;
+};
+
+bool S::default_ctor_called = false;
+
+bool operator==(const S& lhs, const S& rhs)
+{
+    return lhs.x_ == rhs.x_;
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2;
+        v2 = v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2;
+        v2 = v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2(a, N-2);
+        v2 = v;
+        assert(v2.size() == v.size());
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == v[i].size());
+            for (std::size_t j = 0; j < v[i].size(); ++j)
+                assert(v2[i][j] == v[i][j]);
+        }
+    }
+    {
+        typedef S T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2;
+        v2 = v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v[i]);
+        assert(!S::default_ctor_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/gslice_array_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/gslice_array_assign.pass.cpp
new file mode 100644
index 0000000..d989d97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/gslice_array_assign.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const gslice_array<value_type>& ga);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+               12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+               24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+               36, 37, 38, 39, 40};
+    std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    std::valarray<int> v(24);
+    v = v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                          strides(st, sizeof(st)/sizeof(st[0])))];
+    assert(v.size() == 24);
+    assert(v[ 0] ==  3);
+    assert(v[ 1] ==  4);
+    assert(v[ 2] ==  5);
+    assert(v[ 3] ==  7);
+    assert(v[ 4] ==  8);
+    assert(v[ 5] ==  9);
+    assert(v[ 6] == 11);
+    assert(v[ 7] == 12);
+    assert(v[ 8] == 13);
+    assert(v[ 9] == 15);
+    assert(v[10] == 16);
+    assert(v[11] == 17);
+    assert(v[12] == 22);
+    assert(v[13] == 23);
+    assert(v[14] == 24);
+    assert(v[15] == 26);
+    assert(v[16] == 27);
+    assert(v[17] == 28);
+    assert(v[18] == 30);
+    assert(v[19] == 31);
+    assert(v[20] == 32);
+    assert(v[21] == 34);
+    assert(v[22] == 35);
+    assert(v[23] == 36);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/indirect_array_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/indirect_array_assign.pass.cpp
new file mode 100644
index 0000000..5e207f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/indirect_array_assign.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const indirect_array<value_type>& ia);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+               12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+               24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+               36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a)/sizeof(a[0]);
+    std::size_t s[] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                       22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    const std::size_t S = sizeof(s)/sizeof(s[0]);
+    std::valarray<int> v1(a, N1);
+    std::valarray<std::size_t> ia(s, S);
+    std::valarray<int> v(24);
+    v = v1[ia];
+    assert(v.size() == 24);
+    assert(v[ 0] ==  3);
+    assert(v[ 1] ==  4);
+    assert(v[ 2] ==  5);
+    assert(v[ 3] ==  7);
+    assert(v[ 4] ==  8);
+    assert(v[ 5] ==  9);
+    assert(v[ 6] == 11);
+    assert(v[ 7] == 12);
+    assert(v[ 8] == 13);
+    assert(v[ 9] == 15);
+    assert(v[10] == 16);
+    assert(v[11] == 17);
+    assert(v[12] == 22);
+    assert(v[13] == 23);
+    assert(v[14] == 24);
+    assert(v[15] == 26);
+    assert(v[16] == 27);
+    assert(v[17] == 28);
+    assert(v[18] == 30);
+    assert(v[19] == 31);
+    assert(v[20] == 32);
+    assert(v[21] == 34);
+    assert(v[22] == 35);
+    assert(v[23] == 36);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/initializer_list_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/initializer_list_assign.pass.cpp
new file mode 100644
index 0000000..d80f7e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/initializer_list_assign.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(initializer_list<value_type> il);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct S
+{
+    S() : x_(0) { default_ctor_called = true; }
+    S(int x) : x_(x) {}
+    int x_;
+    static bool default_ctor_called;
+};
+
+bool S::default_ctor_called = false;
+
+bool operator==(const S& lhs, const S& rhs)
+{
+    return lhs.x_ == rhs.x_;
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v2;
+        v2 = {1, 2, 3, 4, 5};
+        assert(v2.size() == N);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v2;
+        v2 = {1, 2.5, 3, 4.25, 5};
+        assert(v2.size() == N);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v2(a, N-2);
+        v2 = {T(1), T(2), T(3), T(4), T(5)};
+        assert(v2.size() == N);
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == a[i].size());
+            for (std::size_t j = 0; j < a[i].size(); ++j)
+                assert(v2[i][j] == a[i][j]);
+        }
+    }
+    {
+        typedef S T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v2;
+        v2 = {T(1), T(2), T(3), T(4), T(5)};
+        assert(v2.size() == N);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+        assert(!S::default_ctor_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/mask_array_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/mask_array_assign.pass.cpp
new file mode 100644
index 0000000..b513410
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/mask_array_assign.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const mask_array<value_type>& ma);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<bool> vb(b, N1);
+    std::valarray<int> v2(5);
+    v2 = v1[vb];
+    assert(v2.size() == 5);
+    assert(v2[ 0] ==  0);
+    assert(v2[ 1] ==  3);
+    assert(v2[ 2] ==  4);
+    assert(v2[ 3] ==  7);
+    assert(v2[ 4] == 11);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/move_assign.pass.cpp
new file mode 100644
index 0000000..d8eeea8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/move_assign.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(valarray&& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2;
+        v2 = std::move(v);
+        assert(v2.size() == N);
+        assert(v.size() == 0);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2;
+        v2 = std::move(v);
+        assert(v2.size() == N);
+        assert(v.size() == 0);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2(a, N-2);
+        v2 = std::move(v);
+        assert(v2.size() == N);
+        assert(v.size() == 0);
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == a[i].size());
+            for (std::size_t j = 0; j < a[i].size(); ++j)
+                assert(v2[i][j] == a[i][j]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/slice_array_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/slice_array_assign.pass.cpp
new file mode 100644
index 0000000..08f5f66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/slice_array_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const slice_array<value_type>& sa);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
+    std::valarray<int> v(5);
+    v = v1[std::slice(1, 5, 3)];
+    assert(v.size() == 5);
+    assert(v[0] == 1);
+    assert(v[1] == 4);
+    assert(v[2] == 7);
+    assert(v[3] == 10);
+    assert(v[4] == 13);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.addressof.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.addressof.compile.pass.cpp
new file mode 100644
index 0000000..c0359a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.addressof.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const value_type& x);
+
+// Validate whether the container can be copy-assigned with an ADL-hijacking operator&
+
+#include <valarray>
+
+#include "test_macros.h"
+#include "operator_hijacker.h"
+
+void test() {
+  std::valarray<operator_hijacker> vo;
+  std::valarray<operator_hijacker> v;
+  v = vo;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp
new file mode 100644
index 0000000..cec900f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.assign/value_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        v = 7;
+        assert(v.size() == N);
+        for (std::size_t i = 0; i < v.size(); ++i)
+            assert(v[i] == 7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/and_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/and_valarray.pass.cpp
new file mode 100644
index 0000000..5824d53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/and_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator&=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {0,  2,  0,  0,  0};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v1 &= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/and_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/and_value.pass.cpp
new file mode 100644
index 0000000..67c193c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/and_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator&=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 1,   2,  3,  0,  1};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 &= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/divide_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/divide_valarray.pass.cpp
new file mode 100644
index 0000000..6bca4cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/divide_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator/=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {6, 14, 24, 36, 50};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v3 /= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/divide_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/divide_value.pass.cpp
new file mode 100644
index 0000000..e979037
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/divide_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator/=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6, 12, 18, 24, 30};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v2 /= 6;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/minus_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/minus_valarray.pass.cpp
new file mode 100644
index 0000000..80ecabf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/minus_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator-=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  9, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v3 -= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/minus_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/minus_value.pass.cpp
new file mode 100644
index 0000000..ffec89f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/minus_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator-=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = {-2,  -1,  0,  1,  2};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 -= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/modulo_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/modulo_valarray.pass.cpp
new file mode 100644
index 0000000..176d380
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/modulo_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator%=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {0,  1,  2,  1,  0};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v2 %= v1;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v2[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/modulo_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/modulo_value.pass.cpp
new file mode 100644
index 0000000..f784780
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/modulo_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator%=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {1,  2,  0,  1,  2};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 %= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/or_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/or_valarray.pass.cpp
new file mode 100644
index 0000000..6435f18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/or_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator|=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  7, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v1 |= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/or_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/or_value.pass.cpp
new file mode 100644
index 0000000..68c20be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/or_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator|=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 3,   3,  3,  7,  7};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 |= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/plus_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/plus_valarray.pass.cpp
new file mode 100644
index 0000000..70879ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/plus_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator+=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  9, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v1 += v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/plus_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/plus_value.pass.cpp
new file mode 100644
index 0000000..770eb12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/plus_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator+=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {4,  5,  6,  7,  8};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 += 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_valarray.pass.cpp
new file mode 100644
index 0000000..9c5dcc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator<<=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,   3,    4,    5};
+        T a2[] = { 6,   7,   8,    9,   10};
+        T a3[] = {64, 256, 768, 2048, 5120};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v1 <<= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_value.pass.cpp
new file mode 100644
index 0000000..221abf3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_left_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator<<=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 8,  16, 24, 32, 40};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 <<= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_right_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_right_valarray.pass.cpp
new file mode 100644
index 0000000..9f8f5bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_right_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator>>=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,   3,    4,    5};
+        T a2[] = { 6,   7,   8,    9,   10};
+        T a3[] = {64, 256, 768, 2048, 5120};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v3 >>= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_right_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_right_value.pass.cpp
new file mode 100644
index 0000000..2ce8767
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/shift_right_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator>>=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 8,  16, 24, 32, 40};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v2 >>= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/times_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/times_valarray.pass.cpp
new file mode 100644
index 0000000..070534c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/times_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator*=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {6, 14, 24, 36, 50};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v1 *= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/times_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/times_value.pass.cpp
new file mode 100644
index 0000000..8fd9f45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/times_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator*=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6, 12, 18, 24, 30};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 *= 6;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/xor_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/xor_valarray.pass.cpp
new file mode 100644
index 0000000..970013b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/xor_valarray.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator^=(const valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  5, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3(a3, N);
+        v1 ^= v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/xor_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/xor_value.pass.cpp
new file mode 100644
index 0000000..0a1c947
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cassign/xor_value.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray& operator^=(const value_type& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 2,   1,  0,  7,  6};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        v1 ^= 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/copy.pass.cpp
new file mode 100644
index 0000000..1914efe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/copy.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const valarray<value_type>& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = v;
+        assert(v2.size() == v.size());
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == v[i].size());
+            for (std::size_t j = 0; j < v[i].size(); ++j)
+                assert(v2[i][j] == v[i][j]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/deduct.pass.cpp
new file mode 100644
index 0000000..80ac2ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/deduct.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <valarray>
+
+// template<class T, size_t cnt> valarray(const T(&)[cnt], size_t) -> valarray<T>;
+
+#include <valarray>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        // From (initializer_list<T>)
+        std::valarray v = {1, 2, 3, 4, 5};
+        ASSERT_SAME_TYPE(decltype(v), std::valarray<int>);
+    }
+
+    {
+        // From (const T(&)[N], size_t)
+        long a[] = {1, 2, 3, 4, 5};
+        std::valarray v(a, 5);
+        ASSERT_SAME_TYPE(decltype(v), std::valarray<long>);
+    }
+
+    {
+        // From (const T&, size_t)
+        long a[] = {1, 2, 3, 4, 5};
+        std::valarray v(&a[0], 5);
+        // Surprising but true.
+        ASSERT_SAME_TYPE(decltype(v), std::valarray<long*>);
+    }
+
+    {
+        // From (slice_array<T>)
+        std::valarray<long> v{1,2,3,4,5};
+        std::valarray v2 = v[std::slice(2,3,1)];
+        static_assert(std::is_same_v<decltype(v2), std::valarray<long>>);
+    }
+
+    {
+        // From (gslice_array<T>)
+        std::valarray<long> v{1,2,3,4,5};
+        std::valarray v2 = v[std::gslice(0, {5}, {1})];
+        static_assert(std::is_same_v<decltype(v2), std::valarray<long>>);
+    }
+
+    {
+        // From (mask_array<T>)
+        std::valarray<long> v = {1, 2, 3, 4, 5};
+        std::valarray<bool> m = {true, false, true, false, true};
+        std::valarray v2 = v[m];
+        static_assert(std::is_same_v<decltype(v2), std::valarray<long>>);
+    }
+
+    {
+        // From (indirect_array<T>)
+        std::valarray<long> v = {1, 2, 3, 4, 5};
+        std::valarray<size_t> i = {1, 2, 3};
+        std::valarray v2 = v[i];
+        static_assert(std::is_same_v<decltype(v2), std::valarray<long>>);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/default.pass.cpp
new file mode 100644
index 0000000..9595fbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/default.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray();
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct S {
+    S() { ctor_called = true; }
+    static bool ctor_called;
+};
+
+bool S::ctor_called = false;
+
+int main(int, char**)
+{
+    {
+        std::valarray<int> v;
+        assert(v.size() == 0);
+    }
+    {
+        std::valarray<float> v;
+        assert(v.size() == 0);
+    }
+    {
+        std::valarray<double> v;
+        assert(v.size() == 0);
+    }
+    {
+        std::valarray<std::valarray<double> > v;
+        assert(v.size() == 0);
+    }
+    {
+        std::valarray<S> v;
+        assert(v.size() == 0);
+        assert(!S::ctor_called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/gslice_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/gslice_array.pass.cpp
new file mode 100644
index 0000000..0b3fecd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/gslice_array.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const gslice_array<value_type>& sa);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+               12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+               24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+               36, 37, 38, 39, 40};
+    std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
+    std::size_t sz[] = {2, 4, 3};
+    std::size_t st[] = {19, 4, 1};
+    typedef std::valarray<std::size_t> sizes;
+    typedef std::valarray<std::size_t> strides;
+    std::valarray<int> v(v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                                         strides(st, sizeof(st)/sizeof(st[0])))]);
+    assert(v.size() == 24);
+    assert(v[ 0] ==  3);
+    assert(v[ 1] ==  4);
+    assert(v[ 2] ==  5);
+    assert(v[ 3] ==  7);
+    assert(v[ 4] ==  8);
+    assert(v[ 5] ==  9);
+    assert(v[ 6] == 11);
+    assert(v[ 7] == 12);
+    assert(v[ 8] == 13);
+    assert(v[ 9] == 15);
+    assert(v[10] == 16);
+    assert(v[11] == 17);
+    assert(v[12] == 22);
+    assert(v[13] == 23);
+    assert(v[14] == 24);
+    assert(v[15] == 26);
+    assert(v[16] == 27);
+    assert(v[17] == 28);
+    assert(v[18] == 30);
+    assert(v[19] == 31);
+    assert(v[20] == 32);
+    assert(v[21] == 34);
+    assert(v[22] == 35);
+    assert(v[23] == 36);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/indirect_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/indirect_array.pass.cpp
new file mode 100644
index 0000000..90a18b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/indirect_array.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const indirect_array<value_type>& ia);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+               12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+               24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+               36, 37, 38, 39, 40};
+    const std::size_t N1 = sizeof(a)/sizeof(a[0]);
+    std::size_t s[] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                       22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+    const std::size_t S = sizeof(s)/sizeof(s[0]);
+    std::valarray<int> v1(a, N1);
+    std::valarray<std::size_t> ia(s, S);
+    std::valarray<int> v(v1[ia]);
+    assert(v.size() == 24);
+    assert(v[ 0] ==  3);
+    assert(v[ 1] ==  4);
+    assert(v[ 2] ==  5);
+    assert(v[ 3] ==  7);
+    assert(v[ 4] ==  8);
+    assert(v[ 5] ==  9);
+    assert(v[ 6] == 11);
+    assert(v[ 7] == 12);
+    assert(v[ 8] == 13);
+    assert(v[ 9] == 15);
+    assert(v[10] == 16);
+    assert(v[11] == 17);
+    assert(v[12] == 22);
+    assert(v[13] == 23);
+    assert(v[14] == 24);
+    assert(v[15] == 26);
+    assert(v[16] == 27);
+    assert(v[17] == 28);
+    assert(v[18] == 30);
+    assert(v[19] == 31);
+    assert(v[20] == 32);
+    assert(v[21] == 34);
+    assert(v[22] == 35);
+    assert(v[23] == 36);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..e6430f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/initializer_list.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(initializer_list<value_type>);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v = {1, 2, 3, 4, 5};
+        assert(v.size() == N);
+        for (unsigned i = 0; i < N; ++i)
+            assert(v[i] == a[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v = {1, 2, 3, 4, 5};
+        assert(v.size() == N);
+        for (unsigned i = 0; i < N; ++i)
+            assert(v[i] == a[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/mask_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/mask_array.pass.cpp
new file mode 100644
index 0000000..7959571
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/mask_array.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const mask_array<value_type>& ma);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<bool> vb(b, N1);
+    std::valarray<int> v2(v1[vb]);
+    assert(v2.size() == 5);
+    assert(v2[ 0] ==  0);
+    assert(v2[ 1] ==  3);
+    assert(v2[ 2] ==  4);
+    assert(v2[ 3] ==  7);
+    assert(v2[ 4] == 11);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/move.pass.cpp
new file mode 100644
index 0000000..4c2101c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/move.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const valarray<value_type>& v);
+
+#include <valarray>
+#include <utility>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = std::move(v);
+        assert(v2.size() == N);
+        assert(v.size() == 0);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = std::move(v);
+        assert(v2.size() == N);
+        assert(v.size() == 0);
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = std::move(v);
+        assert(v2.size() == N);
+        assert(v.size() == 0);
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == a[i].size());
+            for (std::size_t j = 0; j < v2[i].size(); ++j)
+                assert(v2[i][j] == a[i][j]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/pointer_size.pass.cpp
new file mode 100644
index 0000000..3413bfa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/pointer_size.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const value_type* p, size_t n);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        assert(v.size() == N);
+        for (unsigned i = 0; i < N; ++i)
+            assert(v[i] == a[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        assert(v.size() == N);
+        for (unsigned i = 0; i < N; ++i)
+            assert(v[i] == a[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        assert(v.size() == N);
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v[i].size() == a[i].size());
+            for (std::size_t j = 0; j < v[i].size(); ++j)
+                assert(v[i][j] == a[i][j]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/size.pass.cpp
new file mode 100644
index 0000000..4c87bd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/size.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// explicit valarray(size_t);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct S {
+    S() : x(1) {}
+    ~S() { ++cnt_dtor; }
+    int x;
+    static size_t cnt_dtor;
+};
+
+size_t S::cnt_dtor = 0;
+
+int main(int, char**)
+{
+    {
+        std::valarray<int> v(100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i] == 0);
+    }
+    {
+        std::valarray<double> v(100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i] == 0);
+    }
+    {
+        std::valarray<std::valarray<double> > v(100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i].size() == 0);
+    }
+    {
+        std::valarray<S> v(100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i].x == 1);
+    }
+    assert(S::cnt_dtor == 100);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/slice_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/slice_array.pass.cpp
new file mode 100644
index 0000000..358979f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/slice_array.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const slice_array<value_type>& sa);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
+    std::valarray<int> v(v1[std::slice(1, 5, 3)]);
+    assert(v.size() == 5);
+    assert(v[0] == 1);
+    assert(v[1] == 4);
+    assert(v[2] == 7);
+    assert(v[3] == 10);
+    assert(v[4] == 13);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/value_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/value_size.pass.cpp
new file mode 100644
index 0000000..48416f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/value_size.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const value_type& x, size_t n);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::valarray<int> v(5, 100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i] == 5);
+    }
+    {
+        std::valarray<double> v(2.5, 100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i] == 2.5);
+    }
+    {
+        std::valarray<std::valarray<double> > v(std::valarray<double>(10), 100);
+        assert(v.size() == 100);
+        for (int i = 0; i < 100; ++i)
+            assert(v[i].size() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_cref.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_cref.pass.cpp
new file mode 100644
index 0000000..5703b99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_cref.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray apply(value_type f(const value_type&)) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef int T;
+
+T f(const T& t) {return t + 5;}
+
+int main(int, char**)
+{
+    {
+        T a1[] = {1, 2, 3, 4,  5,  6,  7,  8,  9, 10};
+        T a2[] = {6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.apply(f);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        std::valarray<T> v2 = v1.apply(f);
+        assert(v2.size() == N1);
+    }
+    {
+        T a1[] = {1, 2, 3, 4,  5,  6,  7,  8,  9, 10};
+        T a2[] = {7, 9, 11, 13, 15, 17, 19, 21, 23, 25};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1+v1).apply(f);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_value.pass.cpp
new file mode 100644
index 0000000..379f28b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/apply_value.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray apply(value_type f(value_type)) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+typedef int T;
+
+T f(T t) {return t + 5;}
+
+int main(int, char**)
+{
+    {
+        T a1[] = {1, 2, 3, 4,  5,  6,  7,  8,  9, 10};
+        T a2[] = {6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.apply(f);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        std::valarray<T> v2 = v1.apply(f);
+        assert(v2.size() == N1);
+    }
+    {
+        T a1[] = {1, 2, 3, 4,  5,  6,  7,  8,  9, 10};
+        T a2[] = {7, 9, 11, 13, 15, 17, 19, 21, 23, 25};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1+v1).apply(f);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/cshift.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/cshift.pass.cpp
new file mode 100644
index 0000000..3b9cc2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/cshift.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray cshift(int i) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(0);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {4, 5, 6, 7, 8, 9, 10, 1, 2, 3};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(10);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 9, 10, 1, 2, 3, 4, 5, 6, 7};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(17);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 9, 10, 1, 2, 3, 4, 5, 6, 7};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(-3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(-10);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {4, 5, 6, 7, 8, 9, 10, 1, 2, 3};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.cshift(-17);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        std::valarray<T> v2 = v1.cshift(-17);
+        assert(v2.size() == N1);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 10, 12, 14, 16, 18, 20, 2, 4, 6};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1 + v1).cshift(3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {16, 18, 20, 2, 4, 6, 8, 10, 12, 14};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1 + v1).cshift(-3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/max.pass.cpp
new file mode 100644
index 0000000..4c65d7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/max.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// value_type max() const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {1.5, 2.5, -3, 4, -5.5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        assert(v1.max() == 4.0);
+    }
+    {
+        typedef double T;
+        T a1[] = {1.5, 2.5, -3, 4, -5.5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        assert((2*v1).max() == 8.0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/min.pass.cpp
new file mode 100644
index 0000000..314552a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/min.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// value_type min() const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {1.5, 2.5, -3, 4, 5.5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        assert(v1.min() == -3.0);
+    }
+    {
+        typedef double T;
+        T a1[] = {1.5, 2.5, -3, 4, 5.5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        assert((2*v1).min() == -6.0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/resize.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/resize.pass.cpp
new file mode 100644
index 0000000..43cc84d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/resize.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// void resize(size_t n, value_type x = value_type());
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        v1.resize(8);
+        assert(v1.size() == 8);
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == 0);
+        v1.resize(0);
+        assert(v1.size() == 0);
+        v1.resize(80);
+        assert(v1.size() == 80);
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == 0);
+        v1.resize(40);
+        assert(v1.size() == 40);
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/shift.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/shift.pass.cpp
new file mode 100644
index 0000000..06528e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/shift.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray shift(int i) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(0);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 0};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(1);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {10, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(9);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(90);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(-1);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(-9);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = v1.shift(-90);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        std::valarray<T> v2 = v1.shift(-90);
+        assert(v2.size() == N1);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {8, 10, 12, 14, 16, 18, 20, 0, 0, 0};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1 + v1).shift(3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+        T a2[] = {0, 0, 0, 2, 4, 6, 8, 10, 12, 14};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2 = (v1 + v1).shift(-3);
+        assert(v2.size() == N1);
+        for (unsigned i = 0; i < N1; ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/size.pass.cpp
new file mode 100644
index 0000000..5757350
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/size.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// size_t size() const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        assert(v1.size() == N1);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        const unsigned N1 = 0;
+        std::valarray<T> v1(a1, N1);
+        assert(v1.size() == N1);
+    }
+    {
+        typedef int T;
+        const unsigned N1 = 0;
+        std::valarray<T> v1;
+        assert(v1.size() == N1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/sum.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/sum.pass.cpp
new file mode 100644
index 0000000..2f7f0ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/sum.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// value_type sum() const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {1.5, 2.5, 3, 4, 5.5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        assert(v1.sum() == 16.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/swap.pass.cpp
new file mode 100644
index 0000000..ce46cbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.members/swap.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// void swap(valarray& v);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        T a2[] = {6, 7, 8, 9, 10, 11, 12};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2(a2, N2);
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        v1.swap(v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2;
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        v1.swap(v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+    {
+        typedef int T;
+        T a2[] = {6, 7, 8, 9, 10, 11, 12};
+        const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
+        std::valarray<T> v1;
+        std::valarray<T> v2(a2, N2);
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        v1.swap(v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+    {
+        typedef int T;
+        std::valarray<T> v1;
+        std::valarray<T> v2;
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        v1.swap(v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/gslice_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/gslice_const.pass.cpp
new file mode 100644
index 0000000..bff8e5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/gslice_const.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// gslice_array<value_type> operator[](const gslice& gs);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                    12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                    24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                    36, 37, 38, 39, 40};
+        int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
+                    -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23};
+        std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+        std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+        std::size_t sz[] = {2, 4, 3};
+        std::size_t st[] = {19, 4, 1};
+        typedef std::valarray<std::size_t> sizes;
+        typedef std::valarray<std::size_t> strides;
+        v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                          strides(st, sizeof(st)/sizeof(st[0])))] = v2;
+        assert(v1.size() == 41);
+        assert(v1[ 0] ==  0);
+        assert(v1[ 1] ==  1);
+        assert(v1[ 2] ==  2);
+        assert(v1[ 3] ==  0);
+        assert(v1[ 4] == -1);
+        assert(v1[ 5] == -2);
+        assert(v1[ 6] ==  6);
+        assert(v1[ 7] == -3);
+        assert(v1[ 8] == -4);
+        assert(v1[ 9] == -5);
+        assert(v1[10] == 10);
+        assert(v1[11] == -6);
+        assert(v1[12] == -7);
+        assert(v1[13] == -8);
+        assert(v1[14] == 14);
+        assert(v1[15] == -9);
+        assert(v1[16] == -10);
+        assert(v1[17] == -11);
+        assert(v1[18] == 18);
+        assert(v1[19] == 19);
+        assert(v1[20] == 20);
+        assert(v1[21] == 21);
+        assert(v1[22] == -12);
+        assert(v1[23] == -13);
+        assert(v1[24] == -14);
+        assert(v1[25] == 25);
+        assert(v1[26] == -15);
+        assert(v1[27] == -16);
+        assert(v1[28] == -17);
+        assert(v1[29] == 29);
+        assert(v1[30] == -18);
+        assert(v1[31] == -19);
+        assert(v1[32] == -20);
+        assert(v1[33] == 33);
+        assert(v1[34] == -21);
+        assert(v1[35] == -22);
+        assert(v1[36] == -23);
+        assert(v1[37] == 37);
+        assert(v1[38] == 38);
+        assert(v1[39] == 39);
+        assert(v1[40] == 40);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/gslice_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/gslice_non_const.pass.cpp
new file mode 100644
index 0000000..f184bff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/gslice_non_const.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator[](const gslice& gs) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                   12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                   24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                   36, 37, 38, 39, 40};
+        std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
+        std::size_t sz[] = {2, 4, 3};
+        std::size_t st[] = {19, 4, 1};
+        typedef std::valarray<std::size_t> sizes;
+        typedef std::valarray<std::size_t> strides;
+        std::valarray<int> v(v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                                             strides(st, sizeof(st)/sizeof(st[0])))]);
+        assert(v.size() == 24);
+        assert(v[ 0] ==  3);
+        assert(v[ 1] ==  4);
+        assert(v[ 2] ==  5);
+        assert(v[ 3] ==  7);
+        assert(v[ 4] ==  8);
+        assert(v[ 5] ==  9);
+        assert(v[ 6] == 11);
+        assert(v[ 7] == 12);
+        assert(v[ 8] == 13);
+        assert(v[ 9] == 15);
+        assert(v[10] == 16);
+        assert(v[11] == 17);
+        assert(v[12] == 22);
+        assert(v[13] == 23);
+        assert(v[14] == 24);
+        assert(v[15] == 26);
+        assert(v[16] == 27);
+        assert(v[17] == 28);
+        assert(v[18] == 30);
+        assert(v[19] == 31);
+        assert(v[20] == 32);
+        assert(v[21] == 34);
+        assert(v[22] == 35);
+        assert(v[23] == 36);
+    }
+    {
+        int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                    12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                    24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                    36, 37, 38, 39, 40};
+        std::valarray<int> v1(a, sizeof(a)/sizeof(a[0]));
+        std::size_t sz[] = {2, 4, 3};
+        std::size_t st[] = {19, 4, 1};
+        typedef std::valarray<std::size_t> sizes;
+        typedef std::valarray<std::size_t> strides;
+        std::valarray<int> v((v1 + 0)[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
+                                            strides(st, sizeof(st)/sizeof(st[0])))]);
+        assert(v.size() == 24);
+        assert(v[ 0] ==  3);
+        assert(v[ 1] ==  4);
+        assert(v[ 2] ==  5);
+        assert(v[ 3] ==  7);
+        assert(v[ 4] ==  8);
+        assert(v[ 5] ==  9);
+        assert(v[ 6] == 11);
+        assert(v[ 7] == 12);
+        assert(v[ 8] == 13);
+        assert(v[ 9] == 15);
+        assert(v[10] == 16);
+        assert(v[11] == 17);
+        assert(v[12] == 22);
+        assert(v[13] == 23);
+        assert(v[14] == 24);
+        assert(v[15] == 26);
+        assert(v[16] == 27);
+        assert(v[17] == 28);
+        assert(v[18] == 30);
+        assert(v[19] == 31);
+        assert(v[20] == 32);
+        assert(v[21] == 34);
+        assert(v[22] == 35);
+        assert(v[23] == 36);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/indirect_array_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/indirect_array_const.pass.cpp
new file mode 100644
index 0000000..d8b99a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/indirect_array_const.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator[](const valarray<size_t>& vs) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                   12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                   24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                   36, 37, 38, 39, 40};
+        const std::size_t N1 = sizeof(a)/sizeof(a[0]);
+        std::size_t s[] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                           22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+        const std::size_t S = sizeof(s)/sizeof(s[0]);
+        const std::valarray<int> v1(a, N1);
+        std::valarray<std::size_t> ia(s, S);
+        std::valarray<int> v = v1[ia];
+        assert(v.size() == 24);
+        assert(v[ 0] ==  3);
+        assert(v[ 1] ==  4);
+        assert(v[ 2] ==  5);
+        assert(v[ 3] ==  7);
+        assert(v[ 4] ==  8);
+        assert(v[ 5] ==  9);
+        assert(v[ 6] == 11);
+        assert(v[ 7] == 12);
+        assert(v[ 8] == 13);
+        assert(v[ 9] == 15);
+        assert(v[10] == 16);
+        assert(v[11] == 17);
+        assert(v[12] == 22);
+        assert(v[13] == 23);
+        assert(v[14] == 24);
+        assert(v[15] == 26);
+        assert(v[16] == 27);
+        assert(v[17] == 28);
+        assert(v[18] == 30);
+        assert(v[19] == 31);
+        assert(v[20] == 32);
+        assert(v[21] == 34);
+        assert(v[22] == 35);
+        assert(v[23] == 36);
+    }
+    {
+        int raw_data[] = {0,1,2,3,4,5,6,7,8,9};
+        std::size_t idx_data[] = {0,2,4,6,8};
+        const std::valarray<int> data(raw_data, sizeof(raw_data)/sizeof(raw_data[0]));
+        std::valarray<std::size_t> idx(idx_data, sizeof(idx_data)/sizeof(idx_data[0]));
+        std::valarray<int> result = (data + 0)[idx];
+        assert(result.size() == 5);
+        assert(result[0] == data[idx[0]]);
+        assert(result[1] == data[idx[1]]);
+        assert(result[2] == data[idx[2]]);
+        assert(result[3] == data[idx[3]]);
+        assert(result[4] == data[idx[4]]);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/indirect_array_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/indirect_array_non_const.pass.cpp
new file mode 100644
index 0000000..10a924a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/indirect_array_non_const.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// indirect_array<value_type> operator[](const valarray<size_t>& vs);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
+                   12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+                   24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
+                   36, 37, 38, 39, 40};
+        const std::size_t N1 = sizeof(a)/sizeof(a[0]);
+        std::size_t s[] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
+                           22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
+        const std::size_t S = sizeof(s)/sizeof(s[0]);
+        std::valarray<int> v1(a, N1);
+        std::valarray<std::size_t> ia(s, S);
+        std::valarray<int> v(24);
+        v = v1[ia];
+        assert(v.size() == 24);
+        assert(v[ 0] ==  3);
+        assert(v[ 1] ==  4);
+        assert(v[ 2] ==  5);
+        assert(v[ 3] ==  7);
+        assert(v[ 4] ==  8);
+        assert(v[ 5] ==  9);
+        assert(v[ 6] == 11);
+        assert(v[ 7] == 12);
+        assert(v[ 8] == 13);
+        assert(v[ 9] == 15);
+        assert(v[10] == 16);
+        assert(v[11] == 17);
+        assert(v[12] == 22);
+        assert(v[13] == 23);
+        assert(v[14] == 24);
+        assert(v[15] == 26);
+        assert(v[16] == 27);
+        assert(v[17] == 28);
+        assert(v[18] == 30);
+        assert(v[19] == 31);
+        assert(v[20] == 32);
+        assert(v[21] == 34);
+        assert(v[22] == 35);
+        assert(v[23] == 36);
+    }
+    {
+        int raw_data[] = {0,1,2,3,4,5,6,7,8,9};
+        std::size_t idx_data[] = {0,2,4,6,8};
+        std::valarray<int> data(raw_data, sizeof(raw_data)/sizeof(raw_data[0]));
+        std::valarray<std::size_t> idx(idx_data, sizeof(idx_data)/sizeof(idx_data[0]));
+        std::valarray<int> result = (data + 0)[idx];
+        assert(result.size() == 5);
+        assert(result[0] == data[idx[0]]);
+        assert(result[1] == data[idx[1]]);
+        assert(result[2] == data[idx[2]]);
+        assert(result[3] == data[idx[3]]);
+        assert(result[4] == data[idx[4]]);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/slice_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/slice_const.pass.cpp
new file mode 100644
index 0000000..750251d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/slice_const.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator[](slice s) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+        std::valarray<int> v2 = v1[std::slice(1, 5, 3)];
+        assert(v2.size() == 5);
+        assert(v2[0] ==  1);
+        assert(v2[1] ==  4);
+        assert(v2[2] ==  7);
+        assert(v2[3] == 10);
+        assert(v2[4] == 13);
+    }
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+        std::valarray<int> v2 = (v1 + 0)[std::slice(0, 2, 3)];
+        assert(v2.size() == 2);
+        assert(v2[0] ==  0);
+        assert(v2[1] == 3);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/slice_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/slice_non_const.pass.cpp
new file mode 100644
index 0000000..ebc79a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/slice_non_const.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// slice_array<value_type> operator[](slice s);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        int a2[] = {-1, -2, -3, -4, -5};
+        std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+        std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
+        v1[std::slice(1, 5, 3)] = v2;
+        assert(v1.size() == 16);
+        assert(v1[ 0] ==  0);
+        assert(v1[ 1] == -1);
+        assert(v1[ 2] ==  2);
+        assert(v1[ 3] ==  3);
+        assert(v1[ 4] == -2);
+        assert(v1[ 5] ==  5);
+        assert(v1[ 6] ==  6);
+        assert(v1[ 7] == -3);
+        assert(v1[ 8] ==  8);
+        assert(v1[ 9] ==  9);
+        assert(v1[10] == -4);
+        assert(v1[11] == 11);
+        assert(v1[12] == 12);
+        assert(v1[13] == -5);
+        assert(v1[14] == 14);
+        assert(v1[15] == 15);
+    }
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5};
+        std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
+        std::valarray<int> v2((v1 + 0)[std::slice(0, 3, 2)]);
+        assert(v2.size() == 3);
+        assert(v2[0] == 0);
+        assert(v2[1] == 2);
+        assert(v2[2] == 4);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/valarray_bool_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/valarray_bool_const.pass.cpp
new file mode 100644
index 0000000..66d0d23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/valarray_bool_const.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator[](const valarray<bool>& vb) const;
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int main(int, char**)
+{
+    {
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<bool> vb(b, N1);
+    std::valarray<int> v2(v1[vb]);
+    assert(v2.size() == 5);
+    assert(v2[ 0] ==  0);
+    assert(v2[ 1] ==  3);
+    assert(v2[ 2] ==  4);
+    assert(v2[ 3] ==  7);
+    assert(v2[ 4] == 11);
+    }
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+        bool b[N1] = {true,  false, false, true,  true,  false,
+                      false, true,  false, false, false, true};
+        std::valarray<int> v1(a1, N1);
+        std::valarray<bool> vb(b, N1);
+        std::valarray<int> v2((v1 - 1)[vb]);
+        assert(v2.size() == 5);
+        assert(v2[ 0] ==  -1);
+        assert(v2[ 1] ==  2);
+        assert(v2[ 2] ==  3);
+        assert(v2[ 3] ==  6);
+        assert(v2[ 4] == 10);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/valarray_bool_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/valarray_bool_non_const.pass.cpp
new file mode 100644
index 0000000..4fd4593
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.sub/valarray_bool_non_const.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// mask_array<value_type> operator[](const valarray<bool>& vb);
+
+#include <valarray>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+        bool b[N1] = {true,  false, false, true,  true,  false,
+                      false, true,  false, false, false, true};
+        std::valarray<int> v1(a1, N1);
+        std::valarray<bool> vb(b, N1);
+        std::valarray<int> v2(5);
+        v2 = v1[vb];
+        assert(v2.size() == 5);
+        assert(v2[ 0] ==  0);
+        assert(v2[ 1] ==  3);
+        assert(v2[ 2] ==  4);
+        assert(v2[ 3] ==  7);
+        assert(v2[ 4] == 11);
+    }
+    {
+        int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+        const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+        bool b[N1] = {true,  false, false, true,  true,  false,
+                      false, true,  false, false, false, true};
+        std::valarray<int> v1(a1, N1);
+        std::valarray<bool> vb(b, N1);
+        std::valarray<int> v2(5);
+        v2 = (v1 + 0)[vb];
+        assert(v2.size() == 5);
+        assert(v2[ 0] ==  0);
+        assert(v2[ 1] ==  3);
+        assert(v2[ 2] ==  4);
+        assert(v2[ 3] ==  7);
+        assert(v2[ 4] == 11);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/bit_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/bit_not.pass.cpp
new file mode 100644
index 0000000..e59b571
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/bit_not.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator~() const;
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = ~v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == ~v[i]);
+    }
+    {
+        typedef std::valarray<int> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = ~v;
+        assert(v2.size() == v.size());
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == v[i].size());
+            for (std::size_t j = 0; j < v[i].size(); ++j)
+                assert(v2[i][j] == ~v[i][j]);
+        }
+    }
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = ~(v + v);
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == ~(2*v[i]));
+    }
+    {
+        // Make sure we don't have dangling reference problems with unary expressions
+        int array[] = {1, 2, 3};
+        std::valarray<int> a(array, 3);
+        std::valarray<int> b(array, 3);
+        auto c = ~a + b;
+        assert(c.size() == 3);
+        assert(c[0] == (~1 + 1) && c[1] == (~2 + 2) && c[2] == (~3 + 3));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/negate.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/negate.pass.cpp
new file mode 100644
index 0000000..7f8defc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/negate.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator-() const;
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == -v[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == -v[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -v;
+        assert(v2.size() == v.size());
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == v[i].size());
+            for (std::size_t j = 0; j < v[i].size(); ++j)
+                assert(v2[i][j] == -v[i][j]);
+        }
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = -(v + v);
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == -2*v[i]);
+    }
+    {
+        // Make sure we don't have dangling reference problems with unary expressions
+        int array[] = {1, 2, 3};
+        std::valarray<int> a(array, 3);
+        std::valarray<int> b(array, 3);
+        auto c = -a * b;
+        assert(c.size() == 3);
+        assert(c[0] == -1 && c[1] == -4 && c[2] == -9);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/not.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/not.pass.cpp
new file mode 100644
index 0000000..58653fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/not.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray<bool> operator!() const;
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<bool> v2 = !v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == !v[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<bool> v2 = !(v + v);
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == !(v[i] + v[i]));
+    }
+    {
+        // Make sure we don't have dangling reference problems with unary expressions
+        bool array[] = {true, false, true};
+        std::valarray<bool> a(array, 3);
+        std::valarray<bool> b(array, 3);
+        auto c = !a && b;
+        assert(c.size() == 3);
+        assert(c[0] == false && c[1] == false && c[2] == false);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/plus.pass.cpp
new file mode 100644
index 0000000..be5540e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/template.valarray/valarray.unary/plus.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray operator+() const;
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a[] = {1, 2, 3, 4, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = +v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == +v[i]);
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = +v;
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == +v[i]);
+    }
+    {
+        typedef std::valarray<double> T;
+        T a[] = {T(1), T(2), T(3), T(4), T(5)};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = +v;
+        assert(v2.size() == v.size());
+        for (unsigned i = 0; i < N; ++i)
+        {
+            assert(v2[i].size() == v[i].size());
+            for (std::size_t j = 0; j < v[i].size(); ++j)
+                assert(v2[i][j] == +v[i][j]);
+        }
+    }
+    {
+        typedef double T;
+        T a[] = {1, 2.5, 3, 4.25, 5};
+        const unsigned N = sizeof(a)/sizeof(a[0]);
+        std::valarray<T> v(a, N);
+        std::valarray<T> v2 = +(v + v);
+        assert(v2.size() == v.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == +2*v[i]);
+    }
+    {
+        // Make sure we don't have dangling reference problems with unary expressions
+        int array[] = {1, 2, 3};
+        std::valarray<int> a(array, 3);
+        std::valarray<int> b(array, 3);
+        auto c = +a * b;
+        assert(c.size() == 3);
+        assert(c[0] == 1 && c[1] == 4 && c[2] == 9);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..9b5661e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator&(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {0,  2,  0,  0,  0};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 & v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_valarray_value.pass.cpp
new file mode 100644
index 0000000..5df2a37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator&(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 1,   2,  3,  0,  1};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 & 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_value_valarray.pass.cpp
new file mode 100644
index 0000000..7a058b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/and_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator&(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 1,   2,  3,  0,  1};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 & v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..72a57f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator/(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {6, 14, 24, 36, 50};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {1,  2,  3,  4,  5};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 / v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_valarray_value.pass.cpp
new file mode 100644
index 0000000..516025e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator/(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {6, 12, 18, 24, 30};
+        T a2[] = {1,  2,  3,  4,  5};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 / 6;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_value_valarray.pass.cpp
new file mode 100644
index 0000000..3fd39d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/divide_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator/(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {3,  1,  1,  0,  0};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 / v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..fe9f345
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator-(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {7,  9, 11, 13, 15};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {1,  2,  3,  4,  5};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 - v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_valarray_value.pass.cpp
new file mode 100644
index 0000000..f81eaa9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator-(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = {-2,  -1,  0,  1,  2};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 - 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_value_valarray.pass.cpp
new file mode 100644
index 0000000..3376014
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/minus_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator-(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 2,   1,  0, -1, -2};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 - v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..e77a191
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator%(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {6,  7,  8,  9, 10};
+        T a2[] = {1,  2,  3,  4,  5};
+        T a3[] = {0,  1,  2,  1,  0};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 % v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_valarray_value.pass.cpp
new file mode 100644
index 0000000..811ec8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator%(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {1,  2,  0,  1,  2};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 % 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_value_valarray.pass.cpp
new file mode 100644
index 0000000..79e52dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/modulo_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator%(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {0,  1,  0,  3,  3};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 % v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..2f524b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator|(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  7, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 | v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_valarray_value.pass.cpp
new file mode 100644
index 0000000..cd2dbcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator|(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 3,   3,  3,  7,  7};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 | 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_value_valarray.pass.cpp
new file mode 100644
index 0000000..bd2e786
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/or_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator|(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 3,   3,  3,  7,  7};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 | v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..631b2ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator+(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  9, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 + v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_valarray_value.pass.cpp
new file mode 100644
index 0000000..4fb6363
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator+(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {4,  5,  6,  7,  8};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 + 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_value_valarray.pass.cpp
new file mode 100644
index 0000000..758058e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/plus_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator+(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {4,  5,  6,  7,  8};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 + v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..d1e8151
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator<<(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,   3,    4,    5};
+        T a2[] = { 6,   7,   8,    9,   10};
+        T a3[] = {64, 256, 768, 2048, 5120};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 << v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_valarray_value.pass.cpp
new file mode 100644
index 0000000..bbc63d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator<<(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 8,  16, 24, 32, 40};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 << 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_value_valarray.pass.cpp
new file mode 100644
index 0000000..46278be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_left_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator<<(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 6,  12, 24, 48, 96};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 << v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..9f73581
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator>>(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {64, 256, 768, 2048, 5120};
+        T a2[] = { 6,   7,   8,    9,   10};
+        T a3[] = { 1,   2,   3,    4,    5};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 >> v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_valarray_value.pass.cpp
new file mode 100644
index 0000000..48069e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator>>(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 8,  16, 24, 32, 40};
+        T a2[] = { 1,   2,  3,  4,  5};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 >> 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_value_valarray.pass.cpp
new file mode 100644
index 0000000..397016b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/shift_right_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator>>(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = {20,  10,  5,  2,  1};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 40 >> v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..0e56d43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator*(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {6, 14, 24, 36, 50};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 * v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_valarray_value.pass.cpp
new file mode 100644
index 0000000..bcdb62d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator+(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6, 12, 18, 24, 30};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 * 6;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_value_valarray.pass.cpp
new file mode 100644
index 0000000..caba578
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/times_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator*(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6, 12, 18, 24, 30};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 6 * v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..db53131
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_valarray_valarray.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator^(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  5};
+        T a2[] = {6,  7,  8,  9, 10};
+        T a3[] = {7,  5, 11, 13, 15};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = v1 ^ v2;
+        assert(v1.size() == v2.size());
+        assert(v1.size() == v3.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_valarray_value.pass.cpp
new file mode 100644
index 0000000..4ad7a0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_valarray_value.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator^(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 2,   1,  0,  7,  6};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = v1 ^ 3;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_value_valarray.pass.cpp
new file mode 100644
index 0000000..37ce06e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.binary/xor_value_valarray.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T> valarray<T> operator^(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = { 1,   2,  3,  4,  5};
+        T a2[] = { 2,   1,  0,  7,  6};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2 = 3 ^ v1;
+        assert(v1.size() == v2.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == a2[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..ab423e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator&&(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        T a2[] = {6,  7,  0,  9, 10};
+        bool a3[] = {true,  true,  false,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 && v2;
+        std::valarray<bool> v3a = +(v1 && v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_valarray_value.pass.cpp
new file mode 100644
index 0000000..a2abf63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_valarray_value.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator&&(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 && 5;
+        std::valarray<bool> v3a = +(v1 && 5);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  false,  false,  false,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 && 0;
+        std::valarray<bool> v3a = +(v1 && 0);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_value_valarray.pass.cpp
new file mode 100644
index 0000000..549c396
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/and_value_valarray.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator&&(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 5 && v2;
+        std::valarray<bool> v3a = +(5 && v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  false,  false,  false,  false};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 0 && v2;
+        std::valarray<bool> v3a = +(0 && v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..b33d47a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator==(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4, 10};
+        T a2[] = {6,  7,  0,  9, 10};
+        bool a3[] = {false,  false,  true,  false,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 == v2;
+        std::valarray<bool> v3a = +(v1 == v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_valarray_value.pass.cpp
new file mode 100644
index 0000000..0a36e2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_valarray_value.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator==(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  true,  false,  false,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 == 2;
+        std::valarray<bool> v3a = +(v1 == 2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_value_valarray.pass.cpp
new file mode 100644
index 0000000..ad3a2a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/equal_value_valarray.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator==(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  true,  false,  false,  false};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 2 == v2;
+        std::valarray<bool> v3a = +(2 == v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..700ed40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator>=(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4, 10};
+        T a2[] = {6,  7,  0,  2, 1};
+        bool a3[] = {false,  false,  true,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 >= v2;
+        std::valarray<bool> v3a = +(v1 >= v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_valarray_value.pass.cpp
new file mode 100644
index 0000000..705a4e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_valarray_value.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator>=(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  true,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 >= 2;
+        std::valarray<bool> v3a = +(v1 >= 2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_value_valarray.pass.cpp
new file mode 100644
index 0000000..d5c3019
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_equal_value_valarray.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator>=(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  false,  false,  true};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 2 >= v2;
+        std::valarray<bool> v3a = +(2 >= v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..2bb72a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator>(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4, 10};
+        T a2[] = {6,  7,  0,  2, 1};
+        bool a3[] = {false,  false,  false,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 > v2;
+        std::valarray<bool> v3a = +(v1 > v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_valarray_value.pass.cpp
new file mode 100644
index 0000000..204e097
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_valarray_value.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator>(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  false,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 > 2;
+        std::valarray<bool> v3a = +(v1 > 2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_value_valarray.pass.cpp
new file mode 100644
index 0000000..ced1977
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/greater_value_valarray.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator>(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  false,  false,  false,  true};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 2 > v2;
+        std::valarray<bool> v3a = +(2 > v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..77fbb68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator<=(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4, 10};
+        T a2[] = {6,  7,  0,  2, 1};
+        bool a3[] = {true,  true,  true,  false,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 <= v2;
+        std::valarray<bool> v3a = +(v1 <= v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_valarray_value.pass.cpp
new file mode 100644
index 0000000..7b4fc6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_valarray_value.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator<=(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  false,  false,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 <= 2;
+        std::valarray<bool> v3a = +(v1 <= 2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_value_valarray.pass.cpp
new file mode 100644
index 0000000..5822ebe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_equal_value_valarray.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator<=(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  true,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 2 <= v2;
+        std::valarray<bool> v3a = +(2 <= v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..374375a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator<(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4, 10};
+        T a2[] = {6,  7,  0,  2, 1};
+        bool a3[] = {true,  true,  false,  false,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 < v2;
+        std::valarray<bool> v3a = +(v1 < v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_valarray_value.pass.cpp
new file mode 100644
index 0000000..7e325a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_valarray_value.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator<(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  false,  false,  false,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 < 2;
+        std::valarray<bool> v3a = +(v1 < 2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_value_valarray.pass.cpp
new file mode 100644
index 0000000..ac1f661
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/less_value_valarray.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator<(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {false,  false,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 2 < v2;
+        std::valarray<bool> v3a = +(2 < v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..e5832e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator!=(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4, 10};
+        T a2[] = {6,  7,  0,  9, 10};
+        bool a3[] = {true,  true,  false,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 != v2;
+        std::valarray<bool> v3a = +(v1 != v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_valarray_value.pass.cpp
new file mode 100644
index 0000000..0199647
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_valarray_value.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator!=(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  false,  true,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 != 2;
+        std::valarray<bool> v3a = +(v1 != 2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_value_valarray.pass.cpp
new file mode 100644
index 0000000..6980448
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/not_equal_value_valarray.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator!=(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  false,  true,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 2 != v2;
+        std::valarray<bool> v3a = +(2 != v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..f5e1188
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_valarray_valarray.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator||(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  0,  4,  0};
+        T a2[] = {6,  7,  0,  9, 10};
+        bool a3[] = {true,  true,  false,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = v1 || v2;
+        std::valarray<bool> v3a = +(v1 || v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_valarray_value.pass.cpp
new file mode 100644
index 0000000..3fa9ff5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_valarray_value.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator||(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  true,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 || 5;
+        std::valarray<bool> v3a = +(v1 || 5);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+    {
+        typedef int T;
+        T a1[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v1(a1, N);
+        std::valarray<bool> v3 = v1 || 0;
+        std::valarray<bool> v3a = +(v1 || 0);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_value_valarray.pass.cpp
new file mode 100644
index 0000000..8ae29be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.comparison/or_value_valarray.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<bool>
+//   operator||(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  true,  true,  true};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 5 || v2;
+        std::valarray<bool> v3a = +(5 || v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+    {
+        typedef int T;
+        T a2[] = {1,  2,  3,  4,  0};
+        bool a3[] = {true,  true,  true,  true,  false};
+        const unsigned N = 5;
+        std::valarray<T> v2(a2, N);
+        std::valarray<bool> v3 = 0 || v2;
+        std::valarray<bool> v3a = +(0 || v2);
+        assert(v3.size() == N);
+        assert(v3a.size() == N);
+        for (std::size_t i = 0; i < N; ++i) {
+            assert(v3[i] == a3[i]);
+            assert(v3a[i] == a3[i]);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.special/swap.pass.cpp
new file mode 100644
index 0000000..033f5a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.special/swap.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   void
+//   swap(valarray<T>& x, valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        T a2[] = {6, 7, 8, 9, 10, 11, 12};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2(a2, N2);
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        swap(v1, v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+    {
+        typedef int T;
+        T a1[] = {1, 2, 3, 4, 5};
+        const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N1);
+        std::valarray<T> v2;
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        swap(v1, v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+    {
+        typedef int T;
+        T a2[] = {6, 7, 8, 9, 10, 11, 12};
+        const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
+        std::valarray<T> v1;
+        std::valarray<T> v2(a2, N2);
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        swap(v1, v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+    {
+        typedef int T;
+        std::valarray<T> v1;
+        std::valarray<T> v2;
+        std::valarray<T> v1_save = v1;
+        std::valarray<T> v2_save = v2;
+        swap(v1, v2);
+        assert(v1.size() == v2_save.size());
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == v2_save[i]);
+        assert(v2.size() == v1_save.size());
+        for (std::size_t i = 0; i < v2.size(); ++i)
+            assert(v2[i] == v1_save[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/abs_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/abs_valarray.pass.cpp
new file mode 100644
index 0000000..902cb86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/abs_valarray.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   abs(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {1.5,  -2.5,  3.4,  -4.5,  -5.0};
+        T a3[] = {1.5,   2.5,  3.4,   4.5,   5.0};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = abs(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(v3[i] == a3[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/acos_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/acos_valarray.pass.cpp
new file mode 100644
index 0000000..ce2d92b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/acos_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   acos(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {2.6905658417935308e+00,
+                  2.0943951023931957e+00,
+                  1.5707963267948966e+00,
+                  1.0471975511965976e+00,
+                  7.2273424781341566e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = acos(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/asin_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/asin_valarray.pass.cpp
new file mode 100644
index 0000000..e8d467b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/asin_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   asin(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-1.1197695149986342e+00,
+                  -5.2359877559829882e-01,
+                  0.0000000000000000e+00,
+                  5.2359877559829882e-01,
+                  8.4806207898148100e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = asin(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..bebc40f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_valarray_valarray.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   atan2(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a2[] = {-.8,  .25, 0.375, -.5, .75};
+        T a3[] = {-2.2974386674766221e+00,
+                  -1.1071487177940904e+00,
+                   0.0000000000000000e+00,
+                   2.3561944901923448e+00,
+                   7.8539816339744828e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = atan2(v1, v2);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_valarray_value.pass.cpp
new file mode 100644
index 0000000..b8be254
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_valarray_value.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   atan2(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-8.7605805059819342e-01,
+                  -5.8800260354756750e-01,
+                   0.0000000000000000e+00,
+                   5.8800260354756750e-01,
+                   7.8539816339744828e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = atan2(v1, .75);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_value_valarray.pass.cpp
new file mode 100644
index 0000000..4cba88b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan2_value_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   atan2(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {2.4468543773930902e+00,
+                  2.1587989303424640e+00,
+                  1.5707963267948966e+00,
+                  9.8279372324732905e-01,
+                  7.8539816339744828e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = atan2(.75, v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan_valarray.pass.cpp
new file mode 100644
index 0000000..daf1b2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/atan_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   atan(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-7.3281510178650666e-01,
+                  -4.6364760900080615e-01,
+                   0.0000000000000000e+00,
+                   4.6364760900080615e-01,
+                   6.4350110879328437e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = atan(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/cos_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/cos_valarray.pass.cpp
new file mode 100644
index 0000000..d9e85e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/cos_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   cos(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {6.2160996827066450e-01,
+                  8.7758256189037276e-01,
+                  1.0000000000000000e+00,
+                  8.7758256189037276e-01,
+                  7.3168886887382090e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = cos(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/cosh_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/cosh_valarray.pass.cpp
new file mode 100644
index 0000000..7ecde1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/cosh_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   cosh(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {1.4330863854487743e+00,
+                  1.1276259652063807e+00,
+                  1.0000000000000000e+00,
+                  1.1276259652063807e+00,
+                  1.2946832846768448e+00};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = cosh(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/exp_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/exp_valarray.pass.cpp
new file mode 100644
index 0000000..6df7666
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/exp_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   exp(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {4.0656965974059911e-01,
+                  6.0653065971263342e-01,
+                  1.0000000000000000e+00,
+                  1.6487212707001282e+00,
+                  2.1170000166126748e+00};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = exp(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/log10_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/log10_valarray.pass.cpp
new file mode 100644
index 0000000..b644e0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/log10_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   log10(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {.5, .75, 1, 3, 7};
+        T a3[] = {-3.0102999566398120e-01,
+                  -1.2493873660829995e-01,
+                   0.0000000000000000e+00,
+                   4.7712125471966244e-01,
+                   8.4509804001425681e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = log10(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/log_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/log_valarray.pass.cpp
new file mode 100644
index 0000000..da66195
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/log_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   log(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {.5, .75, 1, 3, 7};
+        T a3[] = {-6.9314718055994529e-01,
+                  -2.8768207245178090e-01,
+                   0.0000000000000000e+00,
+                   1.0986122886681098e+00,
+                   1.9459101490553132e+00};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = log(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_valarray_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_valarray_valarray.pass.cpp
new file mode 100644
index 0000000..4f1d726
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_valarray_valarray.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   pow(const valarray<T>& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {.9, .5, 0., .5, .75};
+        T a2[] = {-.8,  .25, 0.375, -.5, .75};
+        T a3[] = {1.0879426248455297e+00,
+                  8.4089641525371450e-01,
+                  0.0000000000000000e+00,
+                  1.4142135623730949e+00,
+                  8.0592744886765644e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v2(a2, N);
+        std::valarray<T> v3 = pow(v1, v2);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_valarray_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_valarray_value.pass.cpp
new file mode 100644
index 0000000..4a7502b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_valarray_value.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   pow(const valarray<T>& x, const T& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {.9, .5, 0., .5, .75};
+        T a3[] = {8.1000000000000005e-01,
+                  2.5000000000000000e-01,
+                  0.0000000000000000e+00,
+                  2.5000000000000000e-01,
+                  5.6250000000000000e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = pow(v1, 2.0);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_value_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_value_valarray.pass.cpp
new file mode 100644
index 0000000..019984b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/pow_value_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   pow(const T& x, const valarray<T>& y);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {.9, .5, 0., .5, .75};
+        T a3[] = {1.8660659830736148e+00,
+                  1.4142135623730951e+00,
+                  1.0000000000000000e+00,
+                  1.4142135623730951e+00,
+                  1.6817928305074290e+00};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = pow(2.0, v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sin_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sin_valarray.pass.cpp
new file mode 100644
index 0000000..1a619b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sin_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   sin(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-7.8332690962748330e-01,
+                  -4.7942553860420301e-01,
+                   0.0000000000000000e+00,
+                   4.7942553860420301e-01,
+                   6.8163876002333423e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = sin(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sinh_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sinh_valarray.pass.cpp
new file mode 100644
index 0000000..cf9ff46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sinh_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   sinh(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-1.0265167257081753e+00,
+                  -5.2109530549374738e-01,
+                   0.0000000000000000e+00,
+                   5.2109530549374738e-01,
+                   8.2231673193582999e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = sinh(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sqrt_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sqrt_valarray.pass.cpp
new file mode 100644
index 0000000..d4e71dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/sqrt_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   sqrt(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {.5, .75, 1, 3, 7};
+        T a3[] = {7.0710678118654757e-01,
+                  8.6602540378443860e-01,
+                  1.0000000000000000e+00,
+                  1.7320508075688772e+00,
+                  2.6457513110645907e+00};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = sqrt(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/tan_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/tan_valarray.pass.cpp
new file mode 100644
index 0000000..3d60fc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/tan_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   tan(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-1.2601582175503390e+00,
+                  -5.4630248984379048e-01,
+                   0.0000000000000000e+00,
+                   5.4630248984379048e-01,
+                   9.3159645994407259e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = tan(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/tanh_valarray.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/tanh_valarray.pass.cpp
new file mode 100644
index 0000000..fe6566d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/tanh_valarray.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template<class T>
+//   valarray<T>
+//   tanh(const valarray<T>& x);
+
+#include <valarray>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "valarray_helper.h"
+
+int main(int, char**)
+{
+    {
+        typedef double T;
+        T a1[] = {-.9, -.5, 0., .5, .75};
+        T a3[] = {-7.1629787019902447e-01,
+                  -4.6211715726000974e-01,
+                   0.0000000000000000e+00,
+                   4.6211715726000974e-01,
+                   6.3514895238728730e-01};
+        const unsigned N = sizeof(a1)/sizeof(a1[0]);
+        std::valarray<T> v1(a1, N);
+        std::valarray<T> v3 = tanh(v1);
+        assert(v3.size() == v1.size());
+        for (std::size_t i = 0; i < v3.size(); ++i)
+            assert(is_about(v3[i], a3[i], 10));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/valarray_helper.h b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/valarray_helper.h
new file mode 100644
index 0000000..d68dac0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.nonmembers/valarray.transcend/valarray_helper.h
@@ -0,0 +1,18 @@
+#ifndef LIBCPP_TEST_VALARRAY_HELPER_H
+#define LIBCPP_TEST_VALARRAY_HELPER_H
+
+#include <cmath>
+
+// Returns whether `x` and `y` are equal, up to the given number of
+// significant digits after the decimal.
+//
+// Specifically, we look whether `abs(x - y) < epsilon`, where epsilon
+// is `(1 / 10)^p`, assuming p is the number of digits we care about.
+// This means we're basically looking whether `abs(x - y)` is less
+// than `0.00..001` for some number of digits.
+inline bool is_about(double x, double y, int significant_digits) {
+    double epsilon = std::pow(1.0 / 10.0, significant_digits);
+    return std::abs(x - y) < epsilon;
+}
+
+#endif /* LIBCPP_TEST_VALARRAY_HELPER */
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.range/begin-end.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.range/begin-end.pass.cpp
new file mode 100644
index 0000000..d5ec017
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.range/begin-end.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// template <class T> unspecified begin(valarray<T>& v);
+// template <class T> unspecified begin(const valarray<T>& v);
+// template <class T> unspecified end(valarray<T>& v);
+// template <class T> unspecified end(const valarray<T>& v);
+
+#include <valarray>
+#include <cassert>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  {
+    int a[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v(a, 5);
+    const std::valarray<int>& cv = v;
+    using It = decltype(std::begin(v));
+    using CIt = decltype(std::begin(cv));
+    static_assert(std::is_base_of<std::random_access_iterator_tag, std::iterator_traits<It>::iterator_category>::value, "");
+    static_assert(std::is_base_of<std::random_access_iterator_tag, std::iterator_traits<CIt>::iterator_category>::value, "");
+    ASSERT_SAME_TYPE(decltype(*std::begin(v)), int&);
+    ASSERT_SAME_TYPE(decltype(*std::begin(cv)), const int&);
+    assert(&*std::begin(v) == &v[0]);
+    assert(&*std::begin(cv) == &cv[0]);
+    *std::begin(v) = 10;
+    assert(v[0] == 10);
+
+    ASSERT_SAME_TYPE(decltype(std::end(v)), It);
+    ASSERT_SAME_TYPE(decltype(std::end(cv)), CIt);
+    assert(&*std::prev(std::end(v)) == &v[4]);
+    assert(&*std::prev(std::end(cv)) == &cv[4]);
+  }
+#if TEST_STD_VER >= 11
+  {
+    int a[] = {1, 2, 3, 4, 5};
+    std::valarray<int> v(a, 5);
+    int sum = 0;
+    for (int& i : v) {
+      sum += i;
+    }
+    assert(sum == 15);
+  }
+  {
+    int a[] = {1, 2, 3, 4, 5};
+    const std::valarray<int> cv(a, 5);
+    int sum = 0;
+    for (const int& i : cv) {
+      sum += i;
+    }
+    assert(sum == 15);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.syn/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.syn/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numarray/valarray.syn/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numbers/defined.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numbers/defined.pass.cpp
new file mode 100644
index 0000000..f4111b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numbers/defined.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <numbers>
+
+constexpr bool tests() {
+  [[maybe_unused]] const double* dd0{&std::numbers::e};
+  [[maybe_unused]] const double* dd1{&std::numbers::log2e};
+  [[maybe_unused]] const double* dd2{&std::numbers::log10e};
+  [[maybe_unused]] const double* dd3{&std::numbers::pi};
+  [[maybe_unused]] const double* dd4{&std::numbers::inv_pi};
+  [[maybe_unused]] const double* dd5{&std::numbers::inv_sqrtpi};
+  [[maybe_unused]] const double* dd6{&std::numbers::ln2};
+  [[maybe_unused]] const double* dd7{&std::numbers::ln10};
+  [[maybe_unused]] const double* dd8{&std::numbers::sqrt2};
+  [[maybe_unused]] const double* dd9{&std::numbers::sqrt3};
+  [[maybe_unused]] const double* dd10{&std::numbers::inv_sqrt3};
+  [[maybe_unused]] const double* dd11{&std::numbers::egamma};
+  [[maybe_unused]] const double* dd12{&std::numbers::phi};
+
+  [[maybe_unused]] const float* f0{&std::numbers::e_v<float>};
+  [[maybe_unused]] const float* f1{&std::numbers::log2e_v<float>};
+  [[maybe_unused]] const float* f2{&std::numbers::log10e_v<float>};
+  [[maybe_unused]] const float* f3{&std::numbers::pi_v<float>};
+  [[maybe_unused]] const float* f4{&std::numbers::inv_pi_v<float>};
+  [[maybe_unused]] const float* f5{&std::numbers::inv_sqrtpi_v<float>};
+  [[maybe_unused]] const float* f6{&std::numbers::ln2_v<float>};
+  [[maybe_unused]] const float* f7{&std::numbers::ln10_v<float>};
+  [[maybe_unused]] const float* f8{&std::numbers::sqrt2_v<float>};
+  [[maybe_unused]] const float* f9{&std::numbers::sqrt3_v<float>};
+  [[maybe_unused]] const float* f10{&std::numbers::inv_sqrt3_v<float>};
+  [[maybe_unused]] const float* f11{&std::numbers::egamma_v<float>};
+  [[maybe_unused]] const float* f12{&std::numbers::phi_v<float>};
+
+  [[maybe_unused]] const double* d0{&std::numbers::e_v<double>};
+  [[maybe_unused]] const double* d1{&std::numbers::log2e_v<double>};
+  [[maybe_unused]] const double* d2{&std::numbers::log10e_v<double>};
+  [[maybe_unused]] const double* d3{&std::numbers::pi_v<double>};
+  [[maybe_unused]] const double* d4{&std::numbers::inv_pi_v<double>};
+  [[maybe_unused]] const double* d5{&std::numbers::inv_sqrtpi_v<double>};
+  [[maybe_unused]] const double* d6{&std::numbers::ln2_v<double>};
+  [[maybe_unused]] const double* d7{&std::numbers::ln10_v<double>};
+  [[maybe_unused]] const double* d8{&std::numbers::sqrt2_v<double>};
+  [[maybe_unused]] const double* d9{&std::numbers::sqrt3_v<double>};
+  [[maybe_unused]] const double* d10{&std::numbers::inv_sqrt3_v<double>};
+  [[maybe_unused]] const double* d11{&std::numbers::egamma_v<double>};
+  [[maybe_unused]] const double* d12{&std::numbers::phi_v<double>};
+
+  [[maybe_unused]] const long double* ld0{&std::numbers::e_v<long double>};
+  [[maybe_unused]] const long double* ld1{&std::numbers::log2e_v<long double>};
+  [[maybe_unused]] const long double* ld2{&std::numbers::log10e_v<long double>};
+  [[maybe_unused]] const long double* ld3{&std::numbers::pi_v<long double>};
+  [[maybe_unused]] const long double* ld4{&std::numbers::inv_pi_v<long double>};
+  [[maybe_unused]] const long double* ld5{&std::numbers::inv_sqrtpi_v<long double>};
+  [[maybe_unused]] const long double* ld6{&std::numbers::ln2_v<long double>};
+  [[maybe_unused]] const long double* ld7{&std::numbers::ln10_v<long double>};
+  [[maybe_unused]] const long double* ld8{&std::numbers::sqrt2_v<long double>};
+  [[maybe_unused]] const long double* ld9{&std::numbers::sqrt3_v<long double>};
+  [[maybe_unused]] const long double* ld10{&std::numbers::inv_sqrt3_v<long double>};
+  [[maybe_unused]] const long double* ld11{&std::numbers::egamma_v<long double>};
+  [[maybe_unused]] const long double* ld12{&std::numbers::phi_v<long double>};
+
+  return true;
+}
+
+static_assert(tests());
+
+int main(int, char**) {
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numbers/illformed.verify.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numbers/illformed.verify.cpp
new file mode 100644
index 0000000..213f98c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numbers/illformed.verify.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <numbers>
+
+// Initializing the primary template is ill-formed.
+int log2e{std::numbers::log2e_v<
+    int>}; // expected-error-re@numbers:* {{{{(static_assert|static assertion)}} failed{{.*}}A program that instantiates a primary template of a mathematical constant variable template is ill-formed.}}
+int log10e{std::numbers::log10e_v<int>};
+int pi{std::numbers::pi_v<int>};
+int inv_pi{std::numbers::inv_pi_v<int>};
+int inv_sqrtpi{std::numbers::inv_sqrtpi_v<int>};
+int ln2{std::numbers::ln2_v<int>};
+int ln10{std::numbers::ln10_v<int>};
+int sqrt2{std::numbers::sqrt2_v<int>};
+int sqrt3{std::numbers::sqrt3_v<int>};
+int inv_sqrt3{std::numbers::inv_sqrt3_v<int>};
+int egamma{std::numbers::egamma_v<int>};
+int phi{std::numbers::phi_v<int>};
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numbers/specialize.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numbers/specialize.pass.cpp
new file mode 100644
index 0000000..3afd0fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numbers/specialize.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <numbers>
+
+constexpr bool tests() {
+  [[maybe_unused]] float f0{std::numbers::e_v<float>};
+  [[maybe_unused]] float f1{std::numbers::log2e_v<float>};
+  [[maybe_unused]] float f2{std::numbers::log10e_v<float>};
+  [[maybe_unused]] float f3{std::numbers::pi_v<float>};
+  [[maybe_unused]] float f4{std::numbers::inv_pi_v<float>};
+  [[maybe_unused]] float f5{std::numbers::inv_sqrtpi_v<float>};
+  [[maybe_unused]] float f6{std::numbers::ln2_v<float>};
+  [[maybe_unused]] float f7{std::numbers::ln10_v<float>};
+  [[maybe_unused]] float f8{std::numbers::sqrt2_v<float>};
+  [[maybe_unused]] float f9{std::numbers::sqrt3_v<float>};
+  [[maybe_unused]] float f10{std::numbers::inv_sqrt3_v<float>};
+  [[maybe_unused]] float f11{std::numbers::egamma_v<float>};
+  [[maybe_unused]] float f12{std::numbers::phi_v<float>};
+
+  double d0{std::numbers::e_v<double>};
+  double d1{std::numbers::log2e_v<double>};
+  double d2{std::numbers::log10e_v<double>};
+  double d3{std::numbers::pi_v<double>};
+  double d4{std::numbers::inv_pi_v<double>};
+  double d5{std::numbers::inv_sqrtpi_v<double>};
+  double d6{std::numbers::ln2_v<double>};
+  double d7{std::numbers::ln10_v<double>};
+  double d8{std::numbers::sqrt2_v<double>};
+  double d9{std::numbers::sqrt3_v<double>};
+  double d10{std::numbers::inv_sqrt3_v<double>};
+  double d11{std::numbers::egamma_v<double>};
+  double d12{std::numbers::phi_v<double>};
+
+  assert(d0 == std::numbers::e);
+  assert(d1 == std::numbers::log2e);
+  assert(d2 == std::numbers::log10e);
+  assert(d3 == std::numbers::pi);
+  assert(d4 == std::numbers::inv_pi);
+  assert(d5 == std::numbers::inv_sqrtpi);
+  assert(d6 == std::numbers::ln2);
+  assert(d7 == std::numbers::ln10);
+  assert(d8 == std::numbers::sqrt2);
+  assert(d9 == std::numbers::sqrt3);
+  assert(d10 == std::numbers::inv_sqrt3);
+  assert(d11 == std::numbers::egamma);
+  assert(d12 == std::numbers::phi);
+
+  [[maybe_unused]] long double ld0{std::numbers::e_v<long double>};
+  [[maybe_unused]] long double ld1{std::numbers::log2e_v<long double>};
+  [[maybe_unused]] long double ld2{std::numbers::log10e_v<long double>};
+  [[maybe_unused]] long double ld3{std::numbers::pi_v<long double>};
+  [[maybe_unused]] long double ld4{std::numbers::inv_pi_v<long double>};
+  [[maybe_unused]] long double ld5{std::numbers::inv_sqrtpi_v<long double>};
+  [[maybe_unused]] long double ld6{std::numbers::ln2_v<long double>};
+  [[maybe_unused]] long double ld7{std::numbers::ln10_v<long double>};
+  [[maybe_unused]] long double ld8{std::numbers::sqrt2_v<long double>};
+  [[maybe_unused]] long double ld9{std::numbers::sqrt3_v<long double>};
+  [[maybe_unused]] long double ld10{std::numbers::inv_sqrt3_v<long double>};
+  [[maybe_unused]] long double ld11{std::numbers::egamma_v<long double>};
+  [[maybe_unused]] long double ld12{std::numbers::phi_v<long double>};
+
+  return true;
+}
+
+static_assert(tests());
+
+int main(int, char**) {
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numbers/user_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numbers/user_type.pass.cpp
new file mode 100644
index 0000000..d4df035
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numbers/user_type.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <numbers>
+
+struct user {
+  int value;
+};
+
+template <>
+user std::numbers::e_v<user>{};
+
+template <>
+user std::numbers::log2e_v<user>{};
+
+template <>
+user std::numbers::log10e_v<user>{};
+
+template <>
+user std::numbers::pi_v<user>{};
+
+template <>
+user std::numbers::inv_pi_v<user>{};
+
+template <>
+user std::numbers::inv_sqrtpi_v<user>{};
+
+template <>
+user std::numbers::ln2_v<user>{};
+
+template <>
+user std::numbers::ln10_v<user>{};
+
+template <>
+user std::numbers::sqrt2_v<user>{};
+
+template <>
+user std::numbers::sqrt3_v<user>{};
+
+template <>
+user std::numbers::inv_sqrt3_v<user>{};
+
+template <>
+user std::numbers::egamma_v<user>{};
+
+template <>
+user std::numbers::phi_v<user>{};
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numbers/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numbers/value.pass.cpp
new file mode 100644
index 0000000..e8901aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numbers/value.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <numbers>
+
+constexpr bool tests() {
+  assert(std::numbers::e == 0x1.5bf0a8b145769p+1);
+  assert(std::numbers::e_v<double> == 0x1.5bf0a8b145769p+1);
+  assert(std::numbers::e_v<long double> == 0x1.5bf0a8b145769p+1l);
+  assert(std::numbers::e_v<float> == 0x1.5bf0a8p+1f);
+
+  assert(std::numbers::log2e == 0x1.71547652b82fep+0);
+  assert(std::numbers::log2e_v<double> == 0x1.71547652b82fep+0);
+  assert(std::numbers::log2e_v<long double> == 0x1.71547652b82fep+0l);
+  assert(std::numbers::log2e_v<float> == 0x1.715476p+0f);
+
+  assert(std::numbers::log10e == 0x1.bcb7b1526e50ep-2);
+  assert(std::numbers::log10e_v<double> == 0x1.bcb7b1526e50ep-2);
+  assert(std::numbers::log10e_v<long double> == 0x1.bcb7b1526e50ep-2l);
+  assert(std::numbers::log10e_v<float> == 0x1.bcb7b15p-2f);
+
+  assert(std::numbers::pi == 0x1.921fb54442d18p+1);
+  assert(std::numbers::pi_v<double> == 0x1.921fb54442d18p+1);
+  assert(std::numbers::pi_v<long double> == 0x1.921fb54442d18p+1l);
+  assert(std::numbers::pi_v<float> == 0x1.921fb54p+1f);
+
+  assert(std::numbers::inv_pi == 0x1.45f306dc9c883p-2);
+  assert(std::numbers::inv_pi_v<double> == 0x1.45f306dc9c883p-2);
+  assert(std::numbers::inv_pi_v<long double> == 0x1.45f306dc9c883p-2l);
+  assert(std::numbers::inv_pi_v<float> == 0x1.45f306p-2f);
+
+  assert(std::numbers::inv_sqrtpi == 0x1.20dd750429b6dp-1);
+  assert(std::numbers::inv_sqrtpi_v<double> == 0x1.20dd750429b6dp-1);
+  assert(std::numbers::inv_sqrtpi_v<long double> == 0x1.20dd750429b6dp-1l);
+  assert(std::numbers::inv_sqrtpi_v<float> == 0x1.20dd76p-1f);
+
+  assert(std::numbers::ln2 == 0x1.62e42fefa39efp-1);
+  assert(std::numbers::ln2_v<double> == 0x1.62e42fefa39efp-1);
+  assert(std::numbers::ln2_v<long double> == 0x1.62e42fefa39efp-1l);
+  assert(std::numbers::ln2_v<float> == 0x1.62e42fp-1f);
+
+  assert(std::numbers::ln10 == 0x1.26bb1bbb55516p+1);
+  assert(std::numbers::ln10_v<double> == 0x1.26bb1bbb55516p+1);
+  assert(std::numbers::ln10_v<long double> == 0x1.26bb1bbb55516p+1l);
+  assert(std::numbers::ln10_v<float> == 0x1.26bb1bp+1f);
+
+  assert(std::numbers::sqrt2 == 0x1.6a09e667f3bcdp+0);
+  assert(std::numbers::sqrt2_v<double> == 0x1.6a09e667f3bcdp+0);
+  assert(std::numbers::sqrt2_v<long double> == 0x1.6a09e667f3bcdp+0l);
+  assert(std::numbers::sqrt2_v<float> == 0x1.6a09e6p+0f);
+
+  assert(std::numbers::sqrt3 == 0x1.bb67ae8584caap+0);
+  assert(std::numbers::sqrt3_v<double> == 0x1.bb67ae8584caap+0);
+  assert(std::numbers::sqrt3_v<long double> == 0x1.bb67ae8584caap+0l);
+  assert(std::numbers::sqrt3_v<float> == 0x1.bb67aep+0f);
+
+  assert(std::numbers::inv_sqrt3 == 0x1.279a74590331cp-1);
+  assert(std::numbers::inv_sqrt3_v<double> == 0x1.279a74590331cp-1);
+  assert(std::numbers::inv_sqrt3_v<long double> == 0x1.279a74590331cp-1l);
+  assert(std::numbers::inv_sqrt3_v<float> == 0x1.279a74p-1f);
+
+  assert(std::numbers::egamma == 0x1.2788cfc6fb619p-1);
+  assert(std::numbers::egamma_v<double> == 0x1.2788cfc6fb619p-1);
+  assert(std::numbers::egamma_v<long double> == 0x1.2788cfc6fb619p-1l);
+  assert(std::numbers::egamma_v<float> == 0x1.2788cfp-1f);
+
+  assert(std::numbers::phi == 0x1.9e3779b97f4a8p+0);
+  assert(std::numbers::phi_v<double> == 0x1.9e3779b97f4a8p+0);
+  assert(std::numbers::phi_v<long double> == 0x1.9e3779b97f4a8p+0l);
+  assert(std::numbers::phi_v<float> == 0x1.9e3779ap+0f);
+
+  return true;
+}
+
+static_assert(tests());
+
+int main(int, char**) {
+  tests();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/accumulate/accumulate.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/accumulate/accumulate.pass.cpp
new file mode 100644
index 0000000..b707123
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/accumulate/accumulate.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator Iter, MoveConstructible T>
+//   requires HasPlus<T, Iter::reference>
+//         && HasAssign<T, HasPlus<T, Iter::reference>::result_type>
+//   T
+//   accumulate(Iter first, Iter last, T init);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter first, Iter last, T init, T x)
+{
+    assert(std::accumulate(first, last, init) == x);
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    test(Iter(ia), Iter(ia), 0, 0);
+    test(Iter(ia), Iter(ia), 10, 10);
+    test(Iter(ia), Iter(ia+1), 0, 1);
+    test(Iter(ia), Iter(ia+1), 10, 11);
+    test(Iter(ia), Iter(ia+2), 0, 3);
+    test(Iter(ia), Iter(ia+2), 10, 13);
+    test(Iter(ia), Iter(ia+sa), 0, 21);
+    test(Iter(ia), Iter(ia+sa), 10, 31);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/accumulate/accumulate_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/accumulate/accumulate_op.pass.cpp
new file mode 100644
index 0000000..884ac94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/accumulate/accumulate_op.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator Iter, MoveConstructible T,
+//           Callable<auto, const T&, Iter::reference> BinaryOperation>
+//   requires HasAssign<T, BinaryOperation::result_type>
+//         && CopyConstructible<BinaryOperation>
+//   T
+//   accumulate(Iter first, Iter last, T init, BinaryOperation binary_op);
+
+#include <numeric>
+#include <functional>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+struct rvalue_addable
+{
+    bool correctOperatorUsed = false;
+
+    // make sure the predicate is passed an rvalue and an lvalue (so check that the first argument was moved)
+    constexpr rvalue_addable operator()(rvalue_addable&& r, rvalue_addable const&) {
+        r.correctOperatorUsed = true;
+        return std::move(r);
+    }
+};
+
+constexpr rvalue_addable operator+(rvalue_addable& lhs, rvalue_addable const&)
+{
+    lhs.correctOperatorUsed = false;
+        return lhs;
+}
+
+constexpr rvalue_addable operator+(rvalue_addable&& lhs, rvalue_addable const&)
+{
+    lhs.correctOperatorUsed = true;
+    return std::move(lhs);
+}
+
+constexpr void
+test_use_move()
+{
+    rvalue_addable arr[100];
+    auto res1 = std::accumulate(arr, arr + 100, rvalue_addable());
+    auto res2 = std::accumulate(arr, arr + 100, rvalue_addable(), /*predicate=*/rvalue_addable());
+    assert(res1.correctOperatorUsed);
+    assert(res2.correctOperatorUsed);
+}
+#endif // TEST_STD_VER > 17
+
+// C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+// don't have the support yet. In these cases omit the constexpr test.
+// FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+void
+#else
+TEST_CONSTEXPR_CXX20 void
+#endif
+test_string()
+{
+    std::string sa[] = {"a", "b", "c"};
+    assert(std::accumulate(sa, sa + 3, std::string()) == "abc");
+    assert(std::accumulate(sa, sa + 3, std::string(), std::plus<std::string>()) == "abc");
+}
+
+template <class Iter, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter first, Iter last, T init, T x)
+{
+    assert(std::accumulate(first, last, init, std::multiplies<T>()) == x);
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    test(Iter(ia), Iter(ia), 1, 1);
+    test(Iter(ia), Iter(ia), 10, 10);
+    test(Iter(ia), Iter(ia+1), 1, 1);
+    test(Iter(ia), Iter(ia+1), 10, 10);
+    test(Iter(ia), Iter(ia+2), 1, 2);
+    test(Iter(ia), Iter(ia+2), 10, 20);
+    test(Iter(ia), Iter(ia+sa), 1, 720);
+    test(Iter(ia), Iter(ia+sa), 10, 7200);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+#if TEST_STD_VER > 17
+    test_use_move();
+#endif // TEST_STD_VER > 17
+    // C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+    // don't have the support yet. In these cases omit the constexpr test.
+    // FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+    if (!std::is_constant_evaluated())
+#endif
+    test_string();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/adjacent.difference/adjacent_difference.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/adjacent.difference/adjacent_difference.pass.cpp
new file mode 100644
index 0000000..5654a6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/adjacent.difference/adjacent_difference.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator InIter,
+//           OutputIterator<auto, const InIter::value_type&> OutIter>
+//   requires HasMinus<InIter::value_type, InIter::value_type>
+//         && Constructible<InIter::value_type, InIter::reference>
+//         && OutputIterator<OutIter,
+//                           HasMinus<InIter::value_type, InIter::value_type>::result_type>
+//         && MoveAssignable<InIter::value_type>
+//   OutIter
+//   adjacent_difference(InIter first, InIter last, OutIter result);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {15, 10, 6, 3, 1};
+    int ir[] = {15, -5, -4, -3, -2};
+    const unsigned s = sizeof(ia) / sizeof(ia[0]);
+    int ib[s] = {0};
+    OutIter r = std::adjacent_difference(InIter(ia), InIter(ia+s), OutIter(ib));
+    assert(base(r) == ib + s);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ib[i] == ir[i]);
+}
+
+#if TEST_STD_VER >= 11
+
+class Y;
+
+class X
+{
+    int i_;
+
+    TEST_CONSTEXPR_CXX20 X& operator=(const X&);
+public:
+    TEST_CONSTEXPR_CXX20 explicit X(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 X(const X& x) : i_(x.i_) {}
+    TEST_CONSTEXPR_CXX20 X& operator=(X&& x)
+    {
+        i_ = x.i_;
+        x.i_ = -1;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX20 friend X operator-(const X& x, const X& y) {return X(x.i_ - y.i_);}
+
+    friend class Y;
+};
+
+class Y
+{
+    int i_;
+
+    TEST_CONSTEXPR_CXX20 Y& operator=(const Y&);
+public:
+    TEST_CONSTEXPR_CXX20 explicit Y(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 Y(const Y& y) : i_(y.i_) {}
+    TEST_CONSTEXPR_CXX20 void operator=(const X& x) {i_ = x.i_;}
+};
+
+#endif
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER >= 11
+    X x[3] = {X(1), X(2), X(3)};
+    Y y[3] = {Y(1), Y(2), Y(3)};
+    std::adjacent_difference(x, x+3, y);
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/adjacent.difference/adjacent_difference_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/adjacent.difference/adjacent_difference_op.pass.cpp
new file mode 100644
index 0000000..86c55d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/adjacent.difference/adjacent_difference_op.pass.cpp
@@ -0,0 +1,201 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator InIter,
+//           OutputIterator<auto, const InIter::value_type&> OutIter,
+//           Callable<auto, const InIter::value_type&, const InIter::value_type&> BinaryOperation>
+//   requires Constructible<InIter::value_type, InIter::reference>
+//         && OutputIterator<OutIter, BinaryOperation::result_type>
+//         && MoveAssignable<InIter::value_type>
+//         && CopyConstructible<BinaryOperation>
+//   OutIter
+//   adjacent_difference(InIter first, InIter last, OutIter result, BinaryOperation binary_op);
+
+#include <numeric>
+#include <functional>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+struct rvalue_subtractable
+{
+    bool correctOperatorUsed = false;
+
+    // make sure the predicate is passed an rvalue and an lvalue (so check that the first argument was moved)
+    constexpr rvalue_subtractable operator()(rvalue_subtractable const&, rvalue_subtractable&& r) {
+        r.correctOperatorUsed = true;
+        return std::move(r);
+    }
+};
+
+constexpr rvalue_subtractable operator-(rvalue_subtractable const&, rvalue_subtractable& rhs)
+{
+    rhs.correctOperatorUsed = false;
+    return rhs;
+}
+
+constexpr rvalue_subtractable operator-(rvalue_subtractable const&, rvalue_subtractable&& rhs)
+{
+    rhs.correctOperatorUsed = true;
+    return std::move(rhs);
+}
+
+constexpr void
+test_use_move()
+{
+    const std::size_t size = 100;
+    rvalue_subtractable arr[size];
+    rvalue_subtractable res1[size];
+    rvalue_subtractable res2[size];
+    std::adjacent_difference(arr, arr + size, res1);
+    std::adjacent_difference(arr, arr + size, res2, /*predicate=*/rvalue_subtractable());
+    // start at 1 because the first element is not moved
+    for (unsigned i = 1; i < size; ++i) assert(res1[i].correctOperatorUsed);
+    for (unsigned i = 1; i < size; ++i) assert(res2[i].correctOperatorUsed);
+}
+#endif // TEST_STD_VER > 17
+
+// C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+// don't have the support yet. In these cases omit the constexpr test.
+// FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+void
+#else
+TEST_CONSTEXPR_CXX20 void
+#endif
+test_string()
+{
+    std::string sa[] = {"a", "b", "c"};
+    std::string sr[] = {"a", "ba", "cb"};
+    std::string output[3];
+    std::adjacent_difference(sa, sa + 3, output, std::plus<std::string>());
+    for (unsigned i = 0; i < 3; ++i) assert(output[i] == sr[i]);
+}
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {15, 10, 6, 3, 1};
+    int ir[] = {15, 25, 16, 9, 4};
+    const unsigned s = sizeof(ia) / sizeof(ia[0]);
+    int ib[s] = {0};
+    OutIter r = std::adjacent_difference(InIter(ia), InIter(ia+s), OutIter(ib),
+                                         std::plus<int>());
+    assert(base(r) == ib + s);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ib[i] == ir[i]);
+}
+
+#if TEST_STD_VER >= 11
+
+class Y;
+
+class X
+{
+    int i_;
+
+    TEST_CONSTEXPR_CXX20 X& operator=(const X&);
+public:
+    TEST_CONSTEXPR_CXX20 explicit X(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 X(const X& x) : i_(x.i_) {}
+    TEST_CONSTEXPR_CXX20 X& operator=(X&& x)
+    {
+        i_ = x.i_;
+        x.i_ = -1;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX20 friend X operator-(const X& x, const X& y) {return X(x.i_ - y.i_);}
+
+    friend class Y;
+};
+
+class Y
+{
+    int i_;
+
+    TEST_CONSTEXPR_CXX20 Y& operator=(const Y&);
+public:
+    TEST_CONSTEXPR_CXX20 explicit Y(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 Y(const Y& y) : i_(y.i_) {}
+    TEST_CONSTEXPR_CXX20 void operator=(const X& x) {i_ = x.i_;}
+};
+
+#endif
+
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER >= 11
+    X x[3] = {X(1), X(2), X(3)};
+    Y y[3] = {Y(1), Y(2), Y(3)};
+    std::adjacent_difference(x, x+3, y, std::minus<X>());
+#endif
+
+#if TEST_STD_VER > 17
+    test_use_move();
+#endif // TEST_STD_VER > 17
+    // C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+    // don't have the support yet. In these cases omit the constexpr test.
+    // FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+    if (!std::is_constant_evaluated())
+#endif
+    test_string();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan.pass.cpp
new file mode 100644
index 0000000..69f25fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T>
+//     OutputIterator exclusive_scan(InputIterator first, InputIterator last,
+//                                   OutputIterator result, T init);
+//
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, T init, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::exclusive_scan(first, last, out, init);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::exclusive_scan(out, end, out, init);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]         = {1, 3, 5, 7,  9};
+    const int pRes[] = {0, 1, 4, 9, 16};
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pRes) / sizeof(pRes[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i) {
+        test(Iter(ia), Iter(ia + i), 0, pRes, pRes + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::exclusive_scan(v.begin(), v.end(), v.begin(), size_t{50});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 50 + i * 3);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::exclusive_scan(v.begin(), v.end(), v.begin(), size_t{30});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 30 + triangle(i-1));
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::exclusive_scan(v.begin(), v.end(), v.begin(), size_t{40});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 40 + triangle(i));
+    }
+
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan_init_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan_init_op.pass.cpp
new file mode 100644
index 0000000..53698b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/exclusive.scan/exclusive_scan_init_op.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T, class BinaryOperation>
+//     OutputIterator
+//     exclusive_scan(InputIterator first, InputIterator last,
+//                    OutputIterator result,
+//                    T init, BinaryOperation binary_op); // C++17
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class T, class Op>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, T init, Op op, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::exclusive_scan(first, last, out, init, op);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::exclusive_scan(out, end, out, init, op);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]         = {1, 3, 5,  7,   9};
+    const int pRes[] = {0, 1, 4,  9,  16};
+    const int mRes[] = {1, 1, 3, 15, 105};
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pRes) / sizeof(pRes[0]));       // just to be sure
+    static_assert(sa == sizeof(mRes) / sizeof(mRes[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), 0, std::plus<>(),       pRes, pRes + i);
+        test(Iter(ia), Iter(ia + i), 1, std::multiplies<>(), mRes, mRes + i);
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+//  Make sure that the calculations are done using the init typedef
+    {
+    std::array<unsigned char, 10> v;
+    std::iota(v.begin(), v.end(), static_cast<unsigned char>(1));
+    std::array<size_t, 10> res;
+    std::exclusive_scan(v.begin(), v.end(), res.begin(), 1, std::multiplies<>());
+
+    assert(res.size() == 10);
+    size_t j = 1;
+    assert(res[0] == 1);
+    for (size_t i = 1; i < v.size(); ++i)
+    {
+        j *= i;
+        assert(res[i] == j);
+    }
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan.pass.cpp
new file mode 100644
index 0000000..6e00506
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T>
+//     OutputIterator inclusive_scan(InputIterator first, InputIterator last,
+//                                   OutputIterator result, T init);
+//
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::inclusive_scan(first, last, out);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::inclusive_scan(out, end, out);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]         = {1, 3, 5, 7,  9};
+    const int pRes[] = {1, 4, 9, 16, 25};
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pRes) / sizeof(pRes[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), pRes, pRes + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::inclusive_scan(v.begin(), v.end(), v.begin());
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == (i+1) * 3);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::inclusive_scan(v.begin(), v.end(), v.begin());
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == triangle(i));
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::inclusive_scan(v.begin(), v.end(), v.begin());
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == triangle(i + 1));
+    }
+
+    {
+    std::array<size_t, 0> v, res;
+    std::inclusive_scan(v.begin(), v.end(), res.begin());
+    assert(res.empty());
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op.pass.cpp
new file mode 100644
index 0000000..5e33394
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op.pass.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T, class BinaryOperation>
+//     OutputIterator
+//     inclusive_scan(InputIterator first, InputIterator last,
+//                    OutputIterator result,
+//                    BinaryOperation binary_op); // C++17
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Op, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, Op op, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::inclusive_scan(first, last, out, op);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::inclusive_scan(out, end, out, op);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]         = {1, 3,  5,   7,   9};
+    const int pRes[] = {1, 4,  9,  16,  25};
+    const int mRes[] = {1, 3, 15, 105, 945};
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pRes) / sizeof(pRes[0]));       // just to be sure
+    static_assert(sa == sizeof(mRes) / sizeof(mRes[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       pRes, pRes + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), mRes, mRes + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>());
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == (i+1) * 3);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>());
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == triangle(i));
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>());
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == triangle(i + 1));
+    }
+
+    {
+    std::array<size_t, 0> v, res;
+    std::inclusive_scan(v.begin(), v.end(), res.begin(), std::plus<>());
+    assert(res.empty());
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op_init.pass.cpp
new file mode 100644
index 0000000..f7c2be2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inclusive.scan/inclusive_scan_op_init.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T, class BinaryOperation>
+//     OutputIterator
+//     inclusive_scan(InputIterator first, InputIterator last,
+//                    OutputIterator result,
+//                    BinaryOperation binary_op, T init); // C++17
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class T, class Op>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, Op op, T init, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::inclusive_scan(first, last, out, op, init);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::inclusive_scan(out, end, out, op, init);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]         = {1, 3,  5,   7,   9};
+    const int pRes[] = {1, 4,  9,  16,  25};
+    const int mRes[] = {1, 3, 15, 105, 945};
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pRes) / sizeof(pRes[0]));       // just to be sure
+    static_assert(sa == sizeof(mRes) / sizeof(mRes[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       0, pRes, pRes + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), 1, mRes, mRes + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), size_t{50});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 50 + (i+1) * 3);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), size_t{40});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 40 + triangle(i));
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), size_t{30});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 30 + triangle(i + 1));
+    }
+
+    {
+    std::array<size_t, 0> v, res;
+    std::inclusive_scan(v.begin(), v.end(), res.begin(), std::plus<>(), size_t{40});
+    assert(res.empty());
+    }
+
+//  Make sure that the calculations are done using the init typedef
+    {
+    std::array<unsigned char, 10> v;
+    std::iota(v.begin(), v.end(), static_cast<unsigned char>(1));
+    std::array<size_t, 10> res;
+    std::inclusive_scan(v.begin(), v.end(), res.begin(), std::multiplies<>(), size_t{1});
+
+    assert(res.size() == 10);
+    size_t j = 1;
+    assert(res[0] == 1);
+    for (size_t i = 1; i < v.size(); ++i)
+    {
+        j *= i + 1;
+        assert(res[i] == j);
+    }
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inner.product/inner_product.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inner.product/inner_product.pass.cpp
new file mode 100644
index 0000000..00aeb90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inner.product/inner_product.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator Iter1, InputIterator Iter2, MoveConstructible T>
+//   requires HasMultiply<Iter1::reference, Iter2::reference>
+//         && HasPlus<T, HasMultiply<Iter1::reference, Iter2::reference>::result_type>
+//         && HasAssign<T,
+//                      HasPlus<T,
+//                              HasMultiply<Iter1::reference,
+//                                          Iter2::reference>::result_type>::result_type>
+//   T
+//   inner_product(Iter1 first1, Iter1 last1, Iter2 first2, T init);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first1, Iter1 last1, Iter2 first2, T init, T x)
+{
+    assert(std::inner_product(first1, last1, first2, init) == x);
+}
+
+template <class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int a[] = {1, 2, 3, 4, 5, 6};
+    int b[] = {6, 5, 4, 3, 2, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    test(Iter1(a), Iter1(a), Iter2(b), 0, 0);
+    test(Iter1(a), Iter1(a), Iter2(b), 10, 10);
+    test(Iter1(a), Iter1(a+1), Iter2(b), 0, 6);
+    test(Iter1(a), Iter1(a+1), Iter2(b), 10, 16);
+    test(Iter1(a), Iter1(a+2), Iter2(b), 0, 16);
+    test(Iter1(a), Iter1(a+2), Iter2(b), 10, 26);
+    test(Iter1(a), Iter1(a+sa), Iter2(b), 0, 56);
+    test(Iter1(a), Iter1(a+sa), Iter2(b), 10, 66);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, const int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<forward_iterator<const int*>, const int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, const int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, const int*>();
+
+    test<const int*, cpp17_input_iterator<const int*> >();
+    test<const int*, forward_iterator<const int*> >();
+    test<const int*, bidirectional_iterator<const int*> >();
+    test<const int*, random_access_iterator<const int*> >();
+    test<const int*, const int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inner.product/inner_product_comp.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inner.product/inner_product_comp.pass.cpp
new file mode 100644
index 0000000..250e9e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/inner.product/inner_product_comp.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator Iter1, InputIterator Iter2, MoveConstructible T,
+//           class BinaryOperation1,
+//           Callable<auto, Iter1::reference, Iter2::reference> BinaryOperation2>
+//   requires Callable<BinaryOperation1, const T&, BinaryOperation2::result_type>
+//         && HasAssign<T, BinaryOperation1::result_type>
+//         && CopyConstructible<BinaryOperation1>
+//         && CopyConstructible<BinaryOperation2>
+//   T
+//   inner_product(Iter1 first1, Iter1 last1, Iter2 first2,
+//                 T init, BinaryOperation1 binary_op1, BinaryOperation2 binary_op2);
+
+#include <numeric>
+#include <functional>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+struct do_nothing_op
+{
+    template<class T>
+    constexpr T operator()(T a, T)
+    { return a; }
+};
+
+struct rvalue_addable
+{
+    bool correctOperatorUsed = false;
+
+    constexpr rvalue_addable operator*(rvalue_addable const&) { return *this; }
+
+    // make sure the predicate is passed an rvalue and an lvalue (so check that the first argument was moved)
+    constexpr rvalue_addable operator()(rvalue_addable&& r, rvalue_addable const&) {
+        r.correctOperatorUsed = true;
+        return std::move(r);
+    }
+};
+
+constexpr rvalue_addable operator+(rvalue_addable& lhs, rvalue_addable const&)
+{
+    lhs.correctOperatorUsed = false;
+    return lhs;
+}
+
+constexpr rvalue_addable operator+(rvalue_addable&& lhs, rvalue_addable const&)
+{
+    lhs.correctOperatorUsed = true;
+    return std::move(lhs);
+}
+
+constexpr void
+test_use_move()
+{
+    rvalue_addable arr[100];
+    auto res1 = std::inner_product(arr, arr + 100, arr, rvalue_addable());
+    auto res2 = std::inner_product(arr, arr + 100, arr, rvalue_addable(), /*predicate=*/rvalue_addable(), do_nothing_op());
+
+    assert(res1.correctOperatorUsed);
+    assert(res2.correctOperatorUsed);
+}
+#endif // TEST_STD_VER > 17
+
+// C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+// don't have the support yet. In these cases omit the constexpr test.
+// FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+void
+#else
+TEST_CONSTEXPR_CXX20 void
+#endif
+test_string()
+{
+    std::string sa[] = {"a", "b", "c"};
+    assert(std::accumulate(sa, sa + 3, std::string()) == "abc");
+    assert(std::accumulate(sa, sa + 3, std::string(), std::plus<std::string>()) == "abc");
+}
+
+template <class Iter1, class Iter2, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first1, Iter1 last1, Iter2 first2, T init, T x)
+{
+    assert(std::inner_product(first1, last1, first2, init,
+           std::multiplies<int>(), std::plus<int>()) == x);
+}
+
+template <class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int a[] = {1, 2, 3, 4, 5, 6};
+    int b[] = {6, 5, 4, 3, 2, 1};
+    unsigned sa = sizeof(a) / sizeof(a[0]);
+    test(Iter1(a), Iter1(a), Iter2(b), 1, 1);
+    test(Iter1(a), Iter1(a), Iter2(b), 10, 10);
+    test(Iter1(a), Iter1(a+1), Iter2(b), 1, 7);
+    test(Iter1(a), Iter1(a+1), Iter2(b), 10, 70);
+    test(Iter1(a), Iter1(a+2), Iter2(b), 1, 49);
+    test(Iter1(a), Iter1(a+2), Iter2(b), 10, 490);
+    test(Iter1(a), Iter1(a+sa), Iter2(b), 1, 117649);
+    test(Iter1(a), Iter1(a+sa), Iter2(b), 10, 1176490);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<const int*> >();
+    test<cpp17_input_iterator<const int*>, const int*>();
+
+    test<forward_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<forward_iterator<const int*>, const int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, const int*>();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, const int*>();
+
+    test<const int*, cpp17_input_iterator<const int*> >();
+    test<const int*, forward_iterator<const int*> >();
+    test<const int*, bidirectional_iterator<const int*> >();
+    test<const int*, random_access_iterator<const int*> >();
+    test<const int*, const int*>();
+
+#if TEST_STD_VER > 17
+    test_use_move();
+#endif // TEST_STD_VER > 17
+    // C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+    // don't have the support yet. In these cases omit the constexpr test.
+    // FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+    if (!std::is_constant_evaluated())
+#endif
+    test_string();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.iota/iota.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.iota/iota.pass.cpp
new file mode 100644
index 0000000..8cb49b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.iota/iota.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <class ForwardIterator, class T>
+//     void iota(ForwardIterator first, ForwardIterator last, T value);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class InIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5};
+    int ir[] = {5, 6, 7, 8, 9};
+    const unsigned s = sizeof(ia) / sizeof(ia[0]);
+    std::iota(InIter(ia), InIter(ia+s), 5);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ia[i] == ir[i]);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<forward_iterator<int*> >();
+    test<bidirectional_iterator<int*> >();
+    test<random_access_iterator<int*> >();
+    test<int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool1.compile.fail.cpp
new file mode 100644
index 0000000..31f6c8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool1.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::gcd(false, 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool2.compile.fail.cpp
new file mode 100644
index 0000000..0e6360a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool2.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::gcd(2, true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool3.compile.fail.cpp
new file mode 100644
index 0000000..e2b0155
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool3.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::gcd<volatile bool, int>(false, 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool4.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool4.compile.fail.cpp
new file mode 100644
index 0000000..0453a5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.bool4.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::gcd<int, const bool>(2, true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.not_integral1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.not_integral1.compile.fail.cpp
new file mode 100644
index 0000000..0691963
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.not_integral1.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::gcd(2.0, 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.not_integral2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.not_integral2.compile.fail.cpp
new file mode 100644
index 0000000..94a615c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.not_integral2.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::gcd(4, 6.0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp
new file mode 100644
index 0000000..831c226
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.gcd/gcd.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> gcd(_M __m, _N __n)
+
+#include <numeric>
+#include <cassert>
+#include <climits>
+#include <cstdint>
+#include <type_traits>
+
+#include "test_macros.h"
+
+constexpr struct {
+  int x;
+  int y;
+  int expect;
+} Cases[] = {
+    {0, 0, 0},
+    {1, 0, 1},
+    {0, 1, 1},
+    {1, 1, 1},
+    {2, 3, 1},
+    {2, 4, 2},
+    {36, 17, 1},
+    {36, 18, 18}
+};
+
+
+template <typename Input1, typename Input2, typename Output>
+constexpr bool test0(int in1, int in2, int out)
+{
+    auto value1 = static_cast<Input1>(in1);
+    auto value2 = static_cast<Input2>(in2);
+    static_assert(std::is_same_v<Output, decltype(std::gcd(value1, value2))>, "");
+    static_assert(std::is_same_v<Output, decltype(std::gcd(value2, value1))>, "");
+    assert(static_cast<Output>(out) == std::gcd(value1, value2));
+    return true;
+}
+
+
+template <typename Input1, typename Input2 = Input1>
+constexpr bool do_test(int = 0)
+{
+    using S1 = std::make_signed_t<Input1>;
+    using S2 = std::make_signed_t<Input2>;
+    using U1 = std::make_unsigned_t<Input1>;
+    using U2 = std::make_unsigned_t<Input2>;
+    bool accumulate = true;
+    for (auto TC : Cases) {
+        { // Test with two signed types
+            using Output = std::common_type_t<S1, S2>;
+            accumulate &= test0<S1, S2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S1, S2, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<S1, S2, Output>(TC.x, -TC.y, TC.expect);
+            accumulate &= test0<S1, S2, Output>(-TC.x, -TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(TC.x, -TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(-TC.x, -TC.y, TC.expect);
+        }
+        { // test with two unsigned types
+            using Output = std::common_type_t<U1, U2>;
+            accumulate &= test0<U1, U2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<U2, U1, Output>(TC.x, TC.y, TC.expect);
+        }
+        { // Test with mixed signs
+            using Output = std::common_type_t<S1, U2>;
+            accumulate &= test0<S1, U2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<U2, S1, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S1, U2, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<U2, S1, Output>(TC.x, -TC.y, TC.expect);
+        }
+        { // Test with mixed signs
+            using Output = std::common_type_t<S2, U1>;
+            accumulate &= test0<S2, U1, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<U1, S2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S2, U1, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<U1, S2, Output>(TC.x, -TC.y, TC.expect);
+        }
+    }
+    return accumulate;
+}
+
+int main(int argc, char**)
+{
+    int non_cce = argc; // a value that can't possibly be constexpr
+
+    static_assert(do_test<signed char>(), "");
+    static_assert(do_test<short>(), "");
+    static_assert(do_test<int>(), "");
+    static_assert(do_test<long>(), "");
+    static_assert(do_test<long long>(), "");
+
+    assert(do_test<signed char>(non_cce));
+    assert(do_test<short>(non_cce));
+    assert(do_test<int>(non_cce));
+    assert(do_test<long>(non_cce));
+    assert(do_test<long long>(non_cce));
+
+    static_assert(do_test<std::int8_t>(), "");
+    static_assert(do_test<std::int16_t>(), "");
+    static_assert(do_test<std::int32_t>(), "");
+    static_assert(do_test<std::int64_t>(), "");
+
+    assert(do_test<std::int8_t>(non_cce));
+    assert(do_test<std::int16_t>(non_cce));
+    assert(do_test<std::int32_t>(non_cce));
+    assert(do_test<std::int64_t>(non_cce));
+
+    static_assert(do_test<signed char, int>(), "");
+    static_assert(do_test<int, signed char>(), "");
+    static_assert(do_test<short, int>(), "");
+    static_assert(do_test<int, short>(), "");
+    static_assert(do_test<int, long>(), "");
+    static_assert(do_test<long, int>(), "");
+    static_assert(do_test<int, long long>(), "");
+    static_assert(do_test<long long, int>(), "");
+
+    assert((do_test<signed char, int>(non_cce)));
+    assert((do_test<int, signed char>(non_cce)));
+    assert((do_test<short, int>(non_cce)));
+    assert((do_test<int, short>(non_cce)));
+    assert((do_test<int, long>(non_cce)));
+    assert((do_test<long, int>(non_cce)));
+    assert((do_test<int, long long>(non_cce)));
+    assert((do_test<long long, int>(non_cce)));
+
+//  LWG#2837
+    {
+    auto res = std::gcd(static_cast<std::int64_t>(1234), INT32_MIN);
+    static_assert(std::is_same_v<decltype(res), std::int64_t>, "");
+    assert(res == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool1.compile.fail.cpp
new file mode 100644
index 0000000..a2f8589
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool1.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::lcm(false, 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool2.compile.fail.cpp
new file mode 100644
index 0000000..c5bfed3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool2.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::lcm(2, true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool3.compile.fail.cpp
new file mode 100644
index 0000000..cba45f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool3.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::lcm<volatile bool, int>(false, 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool4.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool4.compile.fail.cpp
new file mode 100644
index 0000000..16e688f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.bool4.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::lcm<int, const bool>(2, true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.not_integral1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.not_integral1.compile.fail.cpp
new file mode 100644
index 0000000..ec71e59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.not_integral1.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::lcm(2.0, 4);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.not_integral2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.not_integral2.compile.fail.cpp
new file mode 100644
index 0000000..afec130
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.not_integral2.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+// Remarks: If either M or N is not an integer type,
+// or if either is (a possibly cv-qualified) bool, the program is ill-formed.
+
+#include <numeric>
+
+
+int main(int, char**)
+{
+    std::lcm(4, 6.0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.pass.cpp
new file mode 100644
index 0000000..16bfbbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.lcm/lcm.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+// <numeric>
+
+// template<class _M, class _N>
+// constexpr common_type_t<_M,_N> lcm(_M __m, _N __n)
+
+#include <numeric>
+#include <cassert>
+#include <climits>
+#include <cstdint>
+#include <type_traits>
+#include "test_macros.h"
+
+constexpr struct {
+  int x;
+  int y;
+  int expect;
+} Cases[] = {
+    {0, 0, 0},
+    {1, 0, 0},
+    {0, 1, 0},
+    {1, 1, 1},
+    {2, 3, 6},
+    {2, 4, 4},
+    {3, 17, 51},
+    {36, 18, 36}
+};
+
+template <typename Input1, typename Input2, typename Output>
+constexpr bool test0(int in1, int in2, int out)
+{
+    auto value1 = static_cast<Input1>(in1);
+    auto value2 = static_cast<Input2>(in2);
+    static_assert(std::is_same_v<Output, decltype(std::lcm(value1, value2))>, "");
+    static_assert(std::is_same_v<Output, decltype(std::lcm(value2, value1))>, "");
+    assert(static_cast<Output>(out) == std::lcm(value1, value2));
+    return true;
+}
+
+
+template <typename Input1, typename Input2 = Input1>
+constexpr bool do_test(int = 0)
+{
+    using S1 = std::make_signed_t<Input1>;
+    using S2 = std::make_signed_t<Input2>;
+    using U1 = std::make_unsigned_t<Input1>;
+    using U2 = std::make_unsigned_t<Input2>;
+    bool accumulate = true;
+    for (auto TC : Cases) {
+        { // Test with two signed types
+            using Output = std::common_type_t<S1, S2>;
+            accumulate &= test0<S1, S2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S1, S2, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<S1, S2, Output>(TC.x, -TC.y, TC.expect);
+            accumulate &= test0<S1, S2, Output>(-TC.x, -TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(TC.x, -TC.y, TC.expect);
+            accumulate &= test0<S2, S1, Output>(-TC.x, -TC.y, TC.expect);
+        }
+        { // test with two unsigned types
+            using Output = std::common_type_t<U1, U2>;
+            accumulate &= test0<U1, U2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<U2, U1, Output>(TC.x, TC.y, TC.expect);
+        }
+        { // Test with mixed signs
+            using Output = std::common_type_t<S1, U2>;
+            accumulate &= test0<S1, U2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<U2, S1, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S1, U2, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<U2, S1, Output>(TC.x, -TC.y, TC.expect);
+        }
+        { // Test with mixed signs
+            using Output = std::common_type_t<S2, U1>;
+            accumulate &= test0<S2, U1, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<U1, S2, Output>(TC.x, TC.y, TC.expect);
+            accumulate &= test0<S2, U1, Output>(-TC.x, TC.y, TC.expect);
+            accumulate &= test0<U1, S2, Output>(TC.x, -TC.y, TC.expect);
+        }
+    }
+    return accumulate;
+}
+
+int main(int argc, char**)
+{
+    int non_cce = argc; // a value that can't possibly be constexpr
+
+    static_assert(do_test<signed char>(), "");
+    static_assert(do_test<short>(), "");
+    static_assert(do_test<int>(), "");
+    static_assert(do_test<long>(), "");
+    static_assert(do_test<long long>(), "");
+
+    assert(do_test<signed char>(non_cce));
+    assert(do_test<short>(non_cce));
+    assert(do_test<int>(non_cce));
+    assert(do_test<long>(non_cce));
+    assert(do_test<long long>(non_cce));
+
+    static_assert(do_test<std::int8_t>(), "");
+    static_assert(do_test<std::int16_t>(), "");
+    static_assert(do_test<std::int32_t>(), "");
+    static_assert(do_test<std::int64_t>(), "");
+
+    assert(do_test<std::int8_t>(non_cce));
+    assert(do_test<std::int16_t>(non_cce));
+    assert(do_test<std::int32_t>(non_cce));
+    assert(do_test<std::int64_t>(non_cce));
+
+    static_assert(do_test<signed char, int>(), "");
+    static_assert(do_test<int, signed char>(), "");
+    static_assert(do_test<short, int>(), "");
+    static_assert(do_test<int, short>(), "");
+    static_assert(do_test<int, long>(), "");
+    static_assert(do_test<long, int>(), "");
+    static_assert(do_test<int, long long>(), "");
+    static_assert(do_test<long long, int>(), "");
+
+    assert((do_test<signed char, int>(non_cce)));
+    assert((do_test<int, signed char>(non_cce)));
+    assert((do_test<short, int>(non_cce)));
+    assert((do_test<int, short>(non_cce)));
+    assert((do_test<int, long>(non_cce)));
+    assert((do_test<long, int>(non_cce)));
+    assert((do_test<int, long long>(non_cce)));
+    assert((do_test<long long, int>(non_cce)));
+
+//  LWG#2837
+    {
+    auto res1 = std::lcm(static_cast<std::int64_t>(1234), INT32_MIN);
+    TEST_IGNORE_NODISCARD std::lcm(INT_MIN, 2UL);   // this used to trigger UBSAN
+    static_assert(std::is_same_v<decltype(res1), std::int64_t>, "");
+    assert(res1 == 1324997410816LL);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.fail.cpp
new file mode 100644
index 0000000..7028e0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.fail.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <numeric>
+
+// template <class _Tp>
+// _Tp midpoint(_Tp __a, _Tp __b) noexcept
+
+// An overload exists for each of char and all arithmetic types except bool.
+
+#include <numeric>
+
+#include "test_macros.h"
+
+int func1 () { return 1; }
+int func2 () { return 2; }
+
+struct Incomplete;
+Incomplete *ip = nullptr;
+void       *vp = nullptr;
+
+int main(int, char**)
+{
+    (void) std::midpoint(false, true);  // expected-error {{no matching function for call to 'midpoint'}}
+
+//  A couple of odd pointer types that should fail
+    (void) std::midpoint(nullptr, nullptr);  // expected-error {{no matching function for call to 'midpoint'}}
+    (void) std::midpoint(func1, func2);      // expected-error {{no matching function for call to 'midpoint'}}
+    (void) std::midpoint(ip, ip);            // expected-error {{no matching function for call to 'midpoint'}}
+    (void) std::midpoint(vp, vp);            // expected-error {{no matching function for call to 'midpoint'}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.float.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.float.pass.cpp
new file mode 100644
index 0000000..6103f3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.float.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <numeric>
+
+// template <class _Float>
+// _Tp midpoint(_Float __a, _Float __b) noexcept
+//
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "fp_compare.h"
+
+//  Totally arbitrary picks for precision
+template <typename T>
+constexpr T fp_error_pct();
+
+template <>
+constexpr float fp_error_pct<float>() { return 1.0e-4f; }
+
+template <>
+constexpr double fp_error_pct<double>() { return 1.0e-12; }
+
+template <>
+constexpr long double fp_error_pct<long double>() { return 1.0e-13l; }
+
+
+template <typename T>
+void fp_test()
+{
+    ASSERT_SAME_TYPE(T, decltype(std::midpoint(T(), T())));
+    ASSERT_NOEXCEPT(             std::midpoint(T(), T()));
+
+    constexpr T maxV = std::numeric_limits<T>::max();
+    constexpr T minV = std::numeric_limits<T>::min();
+
+//  Things that can be compared exactly
+    static_assert((std::midpoint(T(0), T(0))   == T(0)),   "");
+    static_assert((std::midpoint(T(2), T(4))   == T(3)),   "");
+    static_assert((std::midpoint(T(4), T(2))   == T(3)),   "");
+    static_assert((std::midpoint(T(3), T(4))   == T(3.5)), "");
+    static_assert((std::midpoint(T(0), T(0.4)) == T(0.2)), "");
+
+//  Things that can't be compared exactly
+    constexpr T pct = fp_error_pct<T>();
+    assert((fptest_close_pct(std::midpoint(T( 1.3), T(11.4)), T( 6.35),    pct)));
+    assert((fptest_close_pct(std::midpoint(T(11.33), T(31.45)), T(21.39),  pct)));
+    assert((fptest_close_pct(std::midpoint(T(-1.3), T(11.4)), T( 5.05),    pct)));
+    assert((fptest_close_pct(std::midpoint(T(11.4), T(-1.3)), T( 5.05),    pct)));
+    assert((fptest_close_pct(std::midpoint(T(0.1),  T(0.4)),  T(0.25),     pct)));
+
+    assert((fptest_close_pct(std::midpoint(T(11.2345), T(14.5432)), T(12.88885),  pct)));
+
+//  From e to pi
+    assert((fptest_close_pct(std::midpoint(T(2.71828182845904523536028747135266249775724709369995),
+                                      T(3.14159265358979323846264338327950288419716939937510)),
+                                      T(2.92993724102441923691146542731608269097720824653752),  pct)));
+
+    assert((fptest_close_pct(std::midpoint(maxV, T(0)), maxV/2, pct)));
+    assert((fptest_close_pct(std::midpoint(T(0), maxV), maxV/2, pct)));
+    assert((fptest_close_pct(std::midpoint(minV, T(0)), minV/2, pct)));
+    assert((fptest_close_pct(std::midpoint(T(0), minV), minV/2, pct)));
+    assert((fptest_close_pct(std::midpoint(maxV, maxV), maxV,   pct)));
+    assert((fptest_close_pct(std::midpoint(minV, minV), minV,   pct)));
+    assert((fptest_close_pct(std::midpoint(maxV, minV), maxV/2, pct)));
+    assert((fptest_close_pct(std::midpoint(minV, maxV), maxV/2, pct)));
+
+//  Near the min and the max
+    assert((fptest_close_pct(std::midpoint(maxV*T(0.75), maxV*T(0.50)),  maxV*T(0.625), pct)));
+    assert((fptest_close_pct(std::midpoint(maxV*T(0.50), maxV*T(0.75)),  maxV*T(0.625), pct)));
+    assert((fptest_close_pct(std::midpoint(minV*T(2),    minV*T(8)),     minV*T(5),     pct)));
+
+//  Big numbers of different signs
+    assert((fptest_close_pct(std::midpoint(maxV*T( 0.75),  maxV*T(-0.5)), maxV*T( 0.125), pct)));
+    assert((fptest_close_pct(std::midpoint(maxV*T(-0.75),  maxV*T( 0.5)), maxV*T(-0.125), pct)));
+
+//  Denormalized values
+//  TODO
+
+//  Check two values "close to each other"
+    T d1 = T(3.14);
+    T d0 = std::nextafter(d1, T(2));
+    T d2 = std::nextafter(d1, T(5));
+    assert(d0 < d1);  // sanity checking
+    assert(d1 < d2);  // sanity checking
+
+#if defined(__PPC__) && (defined(__LONG_DOUBLE_128__) && __LONG_DOUBLE_128__) &&                                       \
+    !(defined(__LONG_DOUBLE_IEEE128__) && __LONG_DOUBLE_IEEE128__)
+//  For 128 bit long double implemented as 2 doubles on PowerPC,
+//  nextafterl() of libm gives imprecise results which fails the
+//  midpoint() tests below. So skip the test for this case.
+    if constexpr (sizeof(T) != 16)
+#endif
+    {
+    //  Since there's nothing in between, the midpoint has to be one or the other
+        T res;
+        res = std::midpoint(d0, d1);
+        assert(res == d0 || res == d1);
+        assert(d0 <= res);
+        assert(res <= d1);
+        res = std::midpoint(d1, d0);
+        assert(res == d0 || res == d1);
+        assert(d0 <= res);
+        assert(res <= d1);
+
+        res = std::midpoint(d1, d2);
+        assert(res == d1 || res == d2);
+        assert(d1 <= res);
+        assert(res <= d2);
+        res = std::midpoint(d2, d1);
+        assert(res == d1 || res == d2);
+        assert(d1 <= res);
+        assert(res <= d2);
+    }
+}
+
+
+int main (int, char**)
+{
+    fp_test<float>();
+    fp_test<double>();
+    fp_test<long double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.integer.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.integer.pass.cpp
new file mode 100644
index 0000000..599b328
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.integer.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <numeric>
+
+// template <class _Tp>
+// _Tp midpoint(_Tp __a, _Tp __b) noexcept
+//
+
+#include <stdint.h>
+#include <limits>
+#include <numeric>
+#include <cassert>
+#include <cstddef>
+#include "test_macros.h"
+
+template <typename T>
+void signed_test()
+{
+    constexpr T zero{0};
+    constexpr T one{1};
+    constexpr T two{2};
+    constexpr T three{3};
+    constexpr T four{4};
+
+    ASSERT_SAME_TYPE(decltype(std::midpoint(T(), T())), T);
+    ASSERT_NOEXCEPT(          std::midpoint(T(), T()));
+    using limits = std::numeric_limits<T>;
+
+    static_assert(std::midpoint(one, three) == two, "");
+    static_assert(std::midpoint(three, one) == two, "");
+
+    assert(std::midpoint(zero, zero) == zero);
+    assert(std::midpoint(zero, two)  == one);
+    assert(std::midpoint(two, zero)  == one);
+    assert(std::midpoint(two, two)   == two);
+
+    assert(std::midpoint(one, four)    == two);
+    assert(std::midpoint(four, one)    == three);
+    assert(std::midpoint(three, four)  == three);
+    assert(std::midpoint(four, three)  == four);
+
+    assert(std::midpoint(T( 3), T( 4)) == T(3));
+    assert(std::midpoint(T( 4), T( 3)) == T(4));
+    assert(std::midpoint(T(-3), T( 4)) == T(0));
+    assert(std::midpoint(T(-4), T( 3)) == T(-1));
+    assert(std::midpoint(T( 3), T(-4)) == T(0));
+    assert(std::midpoint(T( 4), T(-3)) == T(1));
+    assert(std::midpoint(T(-3), T(-4)) == T(-3));
+    assert(std::midpoint(T(-4), T(-3)) == T(-4));
+
+    static_assert(std::midpoint(limits::min(), limits::max()) == T(-1), "");
+    static_assert(std::midpoint(limits::max(), limits::min()) == T( 0), "");
+
+    static_assert(std::midpoint(limits::min(), T(6)) == limits::min()/2 + 3, "");
+    assert(       std::midpoint(T(6), limits::min()) == limits::min()/2 + 3);
+    assert(       std::midpoint(limits::max(), T(6)) == limits::max()/2 + 4);
+    static_assert(std::midpoint(T(6), limits::max()) == limits::max()/2 + 3, "");
+
+    assert(       std::midpoint(limits::min(), T(-6)) == limits::min()/2 - 3);
+    static_assert(std::midpoint(T(-6), limits::min()) == limits::min()/2 - 3, "");
+    static_assert(std::midpoint(limits::max(), T(-6)) == limits::max()/2 - 2, "");
+    assert(       std::midpoint(T(-6), limits::max()) == limits::max()/2 - 3);
+}
+
+template <typename T>
+void unsigned_test()
+{
+    constexpr T zero{0};
+    constexpr T one{1};
+    constexpr T two{2};
+    constexpr T three{3};
+    constexpr T four{4};
+
+    ASSERT_SAME_TYPE(decltype(std::midpoint(T(), T())), T);
+    ASSERT_NOEXCEPT(          std::midpoint(T(), T()));
+    using limits = std::numeric_limits<T>;
+    const T half_way = (limits::max() - limits::min())/2;
+
+    static_assert(std::midpoint(one, three) == two, "");
+    static_assert(std::midpoint(three, one) == two, "");
+
+    assert(std::midpoint(zero, zero) == zero);
+    assert(std::midpoint(zero, two)  == one);
+    assert(std::midpoint(two, zero)  == one);
+    assert(std::midpoint(two, two)   == two);
+
+    assert(std::midpoint(one, four)    == two);
+    assert(std::midpoint(four, one)    == three);
+    assert(std::midpoint(three, four)  == three);
+    assert(std::midpoint(four, three)  == four);
+
+    assert(std::midpoint(limits::min(), limits::max()) == T(half_way));
+    assert(std::midpoint(limits::max(), limits::min()) == T(half_way + 1));
+
+    static_assert(std::midpoint(limits::min(), T(6)) == limits::min()/2 + 3, "");
+    assert(       std::midpoint(T(6), limits::min()) == limits::min()/2 + 3);
+    assert(       std::midpoint(limits::max(), T(6)) == half_way + 4);
+    static_assert(std::midpoint(T(6), limits::max()) == half_way + 3, "");
+}
+
+
+int main(int, char**)
+{
+    signed_test<signed char>();
+    signed_test<short>();
+    signed_test<int>();
+    signed_test<long>();
+    signed_test<long long>();
+
+    signed_test<int8_t>();
+    signed_test<int16_t>();
+    signed_test<int32_t>();
+    signed_test<int64_t>();
+
+    unsigned_test<unsigned char>();
+    unsigned_test<unsigned short>();
+    unsigned_test<unsigned int>();
+    unsigned_test<unsigned long>();
+    unsigned_test<unsigned long long>();
+
+    unsigned_test<uint8_t>();
+    unsigned_test<uint16_t>();
+    unsigned_test<uint32_t>();
+    unsigned_test<uint64_t>();
+
+#ifndef TEST_HAS_NO_INT128
+    unsigned_test<__uint128_t>();
+    signed_test<__int128_t>();
+#endif
+
+//     int_test<char>();
+    signed_test<ptrdiff_t>();
+    unsigned_test<size_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.pointer.pass.cpp
new file mode 100644
index 0000000..62ae099
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.pointer.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <numeric>
+
+// template <class _Tp>
+// _Tp* midpoint(_Tp* __a, _Tp* __b) noexcept
+//
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+
+template <typename T>
+constexpr void constexpr_test()
+{
+    constexpr T array[1000] = {};
+    ASSERT_SAME_TYPE(decltype(std::midpoint(array, array)), const T*);
+    ASSERT_NOEXCEPT(          std::midpoint(array, array));
+
+    static_assert(std::midpoint(array, array)        == array, "");
+    static_assert(std::midpoint(array, array + 1000) == array + 500, "");
+
+    static_assert(std::midpoint(array, array +    9) == array + 4, "");
+    static_assert(std::midpoint(array, array +   10) == array + 5, "");
+    static_assert(std::midpoint(array, array +   11) == array + 5, "");
+    static_assert(std::midpoint(array +    9, array) == array + 5, "");
+    static_assert(std::midpoint(array +   10, array) == array + 5, "");
+    static_assert(std::midpoint(array +   11, array) == array + 6, "");
+}
+
+template <typename T>
+void runtime_test()
+{
+    T array[1000] = {}; // we need an array to make valid pointers
+    ASSERT_SAME_TYPE(decltype(std::midpoint(array, array)), T*);
+    ASSERT_NOEXCEPT(          std::midpoint(array, array));
+
+    assert(std::midpoint(array, array)        == array);
+    assert(std::midpoint(array, array + 1000) == array + 500);
+
+    assert(std::midpoint(array, array +    9) == array + 4);
+    assert(std::midpoint(array, array +   10) == array + 5);
+    assert(std::midpoint(array, array +   11) == array + 5);
+    assert(std::midpoint(array +    9, array) == array + 5);
+    assert(std::midpoint(array +   10, array) == array + 5);
+    assert(std::midpoint(array +   11, array) == array + 6);
+}
+
+template <typename T>
+void pointer_test()
+{
+    runtime_test<               T>();
+    runtime_test<const          T>();
+    runtime_test<      volatile T>();
+    runtime_test<const volatile T>();
+
+//  The constexpr tests are always const, but we can test them anyway.
+    constexpr_test<               T>();
+    constexpr_test<const          T>();
+
+//  GCC 9.0.1 (unreleased as of 2019-03) barfs on this, but we have a bot for it.
+//  Uncomment when gcc 9.1 is released
+#ifndef TEST_COMPILER_GCC
+    constexpr_test<      volatile T>();
+    constexpr_test<const volatile T>();
+#endif
+}
+
+
+int main(int, char**)
+{
+    pointer_test<char>();
+    pointer_test<int>();
+    pointer_test<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/partial.sum/partial_sum.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/partial.sum/partial_sum.pass.cpp
new file mode 100644
index 0000000..e4d3e9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/partial.sum/partial_sum.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <InputIterator InIter, OutputIterator<auto, const InIter::value_type&> OutIter>
+//   requires HasPlus<InIter::value_type, InIter::reference>
+//         && HasAssign<InIter::value_type,
+//                      HasPlus<InIter::value_type, InIter::reference>::result_type>
+//         && Constructible<InIter::value_type, InIter::reference>
+//   OutIter
+//   partial_sum(InIter first, InIter last, OutIter result);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5};
+    int ir[] = {1, 3, 6, 10, 15};
+    const unsigned s = sizeof(ia) / sizeof(ia[0]);
+    int ib[s] = {0};
+    OutIter r = std::partial_sum(InIter(ia), InIter(ia+s), OutIter(ib));
+    assert(base(r) == ib + s);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ib[i] == ir[i]);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/partial.sum/partial_sum_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/partial.sum/partial_sum_op.pass.cpp
new file mode 100644
index 0000000..42ec305
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/partial.sum/partial_sum_op.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<InputIterator InIter,
+//          OutputIterator<auto, const InIter::value_type&> OutIter,
+//          Callable<auto, const InIter::value_type&, InIter::reference> BinaryOperation>
+//   requires HasAssign<InIter::value_type, BinaryOperation::result_type>
+//         && Constructible<InIter::value_type, InIter::reference>
+//         && CopyConstructible<BinaryOperation>
+//   OutIter
+//   partial_sum(InIter first, InIter last, OutIter result, BinaryOperation binary_op);
+
+#include <numeric>
+#include <functional>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#if TEST_STD_VER > 17
+struct rvalue_addable
+{
+    bool correctOperatorUsed = false;
+
+    // make sure the predicate is passed an rvalue and an lvalue (so check that the first argument was moved)
+    constexpr rvalue_addable operator()(rvalue_addable&& r, rvalue_addable const&) {
+        r.correctOperatorUsed = true;
+        return std::move(r);
+    }
+};
+
+constexpr rvalue_addable operator+(rvalue_addable& lhs, rvalue_addable const&)
+{
+    lhs.correctOperatorUsed = false;
+    return lhs;
+}
+
+constexpr rvalue_addable operator+(rvalue_addable&& lhs, rvalue_addable const&)
+{
+    lhs.correctOperatorUsed = true;
+    return std::move(lhs);
+}
+
+constexpr void
+test_use_move()
+{
+    const std::size_t size = 100;
+    rvalue_addable arr[size];
+    rvalue_addable res1[size];
+    rvalue_addable res2[size];
+    std::partial_sum(arr, arr + size, res1);
+    std::partial_sum(arr, arr + size, res2, /*predicate=*/rvalue_addable());
+    // start at 1 because the first element is not moved
+    for (unsigned i = 1; i < size; ++i) assert(res1[i].correctOperatorUsed);
+    for (unsigned i = 1; i < size; ++i) assert(res2[i].correctOperatorUsed);
+}
+#endif // TEST_STD_VER > 17
+
+// C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+// don't have the support yet. In these cases omit the constexpr test.
+// FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+void
+#else
+TEST_CONSTEXPR_CXX20 void
+#endif
+test_string()
+{
+    std::string sa[] = {"a", "b", "c"};
+    std::string sr[] = {"a", "ba", "cb"};
+    std::string output[3];
+    std::adjacent_difference(sa, sa + 3, output, std::plus<std::string>());
+    for (unsigned i = 0; i < 3; ++i) assert(output[i] == sr[i]);
+}
+
+template <class InIter, class OutIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5};
+    int ir[] = {1, -1, -4, -8, -13};
+    const unsigned s = sizeof(ia) / sizeof(ia[0]);
+    int ib[s] = {0};
+    OutIter r = std::partial_sum(InIter(ia), InIter(ia+s), OutIter(ib), std::minus<int>());
+    assert(base(r) == ib + s);
+    for (unsigned i = 0; i < s; ++i)
+        assert(ib[i] == ir[i]);
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test<cpp17_input_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, forward_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, random_access_iterator<int*> >();
+    test<cpp17_input_iterator<const int*>, int*>();
+
+    test<forward_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<forward_iterator<const int*>, forward_iterator<int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<int*> >();
+    test<forward_iterator<const int*>, int*>();
+
+    test<bidirectional_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<int*> >();
+    test<bidirectional_iterator<const int*>, int*>();
+
+    test<random_access_iterator<const int*>, cpp17_output_iterator<int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<int*> >();
+    test<random_access_iterator<const int*>, int*>();
+
+    test<const int*, cpp17_output_iterator<int*> >();
+    test<const int*, forward_iterator<int*> >();
+    test<const int*, bidirectional_iterator<int*> >();
+    test<const int*, random_access_iterator<int*> >();
+    test<const int*, int*>();
+
+#if TEST_STD_VER > 17
+    test_use_move();
+#endif // TEST_STD_VER > 17
+    // C++20 can use string in constexpr evaluation, but both libc++ and MSVC
+    // don't have the support yet. In these cases omit the constexpr test.
+    // FIXME Remove constexpr string workaround introduced in D90569
+#if TEST_STD_VER > 17 && \
+    (!defined(__cpp_lib_constexpr_string) || __cpp_lib_constexpr_string < 201907L)
+    if (!std::is_constant_evaluated())
+#endif
+    test_string();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce.pass.cpp
new file mode 100644
index 0000000..53a595e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator>
+//     typename iterator_traits<InputIterator>::value_type
+//     reduce(InputIterator first, InputIterator last);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter first, Iter last, T x)
+{
+    static_assert( std::is_same_v<typename std::iterator_traits<decltype(first)>::value_type,
+                                decltype(std::reduce(first, last))> );
+    assert(std::reduce(first, last) == x);
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    test(Iter(ia), Iter(ia), 0);
+    test(Iter(ia), Iter(ia+1), 1);
+    test(Iter(ia), Iter(ia+2), 3);
+    test(Iter(ia), Iter(ia+sa), 21);
+}
+
+template <typename T>
+TEST_CONSTEXPR_CXX20 void
+test_return_type()
+{
+    T *p = nullptr;
+    static_assert( std::is_same_v<T, decltype(std::reduce(p, p))> );
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_return_type<char>();
+    test_return_type<int>();
+    test_return_type<unsigned long>();
+    test_return_type<float>();
+    test_return_type<double>();
+
+    test<cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce_init.pass.cpp
new file mode 100644
index 0000000..59590b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce_init.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class T>
+//   T reduce(InputIterator first, InputIterator last, T init);
+
+#include <numeric>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter first, Iter last, T init, T x)
+{
+    static_assert( std::is_same_v<T, decltype(std::reduce(first, last, init))> );
+    assert(std::reduce(first, last, init) == x);
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    test(Iter(ia), Iter(ia), 0, 0);
+    test(Iter(ia), Iter(ia), 1, 1);
+    test(Iter(ia), Iter(ia+1), 0, 1);
+    test(Iter(ia), Iter(ia+1), 2, 3);
+    test(Iter(ia), Iter(ia+2), 0, 3);
+    test(Iter(ia), Iter(ia+2), 3, 6);
+    test(Iter(ia), Iter(ia+sa), 0, 21);
+    test(Iter(ia), Iter(ia+sa), 4, 25);
+}
+
+template <typename T, typename Init>
+TEST_CONSTEXPR_CXX20 void
+test_return_type()
+{
+    T *p = nullptr;
+    static_assert( std::is_same_v<Init, decltype(std::reduce(p, p, Init{}))> );
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_return_type<char, int>();
+    test_return_type<int, int>();
+    test_return_type<int, unsigned long>();
+    test_return_type<float, int>();
+    test_return_type<short, float>();
+    test_return_type<double, char>();
+    test_return_type<char, double>();
+
+    test<cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce_init_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce_init_op.pass.cpp
new file mode 100644
index 0000000..347d375
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/reduce/reduce_init_op.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class T, class BinaryOperation>
+//   T reduce(InputIterator first, InputIterator last, T init, BinaryOperation op);
+
+#include <numeric>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter, class T, class Op>
+TEST_CONSTEXPR_CXX20 void
+test(Iter first, Iter last, T init, Op op, T x)
+{
+    static_assert( std::is_same_v<T, decltype(std::reduce(first, last, init, op))>, "" );
+    assert(std::reduce(first, last, init, op) == x);
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[] = {1, 2, 3, 4, 5, 6};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    test(Iter(ia), Iter(ia), 0, std::plus<>(), 0);
+    test(Iter(ia), Iter(ia), 1, std::multiplies<>(), 1);
+    test(Iter(ia), Iter(ia+1), 0, std::plus<>(), 1);
+    test(Iter(ia), Iter(ia+1), 2, std::multiplies<>(), 2);
+    test(Iter(ia), Iter(ia+2), 0, std::plus<>(), 3);
+    test(Iter(ia), Iter(ia+2), 3, std::multiplies<>(), 6);
+    test(Iter(ia), Iter(ia+sa), 0, std::plus<>(), 21);
+    test(Iter(ia), Iter(ia+sa), 4, std::multiplies<>(), 2880);
+}
+
+template <typename T, typename Init>
+TEST_CONSTEXPR_CXX20 void
+test_return_type()
+{
+    T *p = nullptr;
+    static_assert( std::is_same_v<Init, decltype(std::reduce(p, p, Init{}, std::plus<>()))>, "" );
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_return_type<char, int>();
+    test_return_type<int, int>();
+    test_return_type<int, unsigned long>();
+    test_return_type<float, int>();
+    test_return_type<short, float>();
+    test_return_type<double, char>();
+    test_return_type<char, double>();
+
+    test<cpp17_input_iterator<const int*> >();
+    test<forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+
+//  Make sure the math is done using the correct type
+    {
+    auto v = {1, 2, 3, 4, 5, 6, 7, 8};
+    unsigned res = std::reduce(v.begin(), v.end(), 1U, std::multiplies<>());
+    assert(res == 40320);       // 8! will not fit into a char
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.exclusive.scan/transform_exclusive_scan_init_bop_uop.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.exclusive.scan/transform_exclusive_scan_init_bop_uop.pass.cpp
new file mode 100644
index 0000000..9ab546a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.exclusive.scan/transform_exclusive_scan_init_bop_uop.pass.cpp
@@ -0,0 +1,168 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T,
+//          class BinaryOperation, class UnaryOperation>
+//   OutputIterator transform_exclusive_scan(InputIterator first, InputIterator last,
+//                                           OutputIterator result, T init,
+//                                           BinaryOperation binary_op,
+//                                           UnaryOperation unary_op);
+
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct add_one {
+    template <typename T>
+    constexpr auto operator()(T x) const noexcept {
+        return static_cast<T>(x + 1);
+    }
+};
+
+template <class Iter1, class BOp, class UOp, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, BOp bop, UOp uop, T init, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::transform_exclusive_scan(first, last, out, init, bop, uop);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::transform_exclusive_scan(out, end, out, init, bop, uop);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]           = { 1,  3,  5,    7,   9 };
+    const int pResI0[] = { 0,  2,  6,   12,  20 };        // with add_one
+    const int mResI0[] = { 0,  0,  0,    0,   0 };
+    const int pResN0[] = { 0, -1, -4,   -9, -16 };        // with negate
+    const int mResN0[] = { 0,  0,  0,    0,   0 };
+    const int pResI2[] = { 2,  4,  8,   14,  22 };        // with add_one
+    const int mResI2[] = { 2,  4, 16,   96, 768 };
+    const int pResN2[] = { 2,  1,  -2,  -7, -14 };        // with negate
+    const int mResN2[] = { 2, -2,   6, -30, 210 };
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pResI0) / sizeof(pResI0[0]));       // just to be sure
+    static_assert(sa == sizeof(mResI0) / sizeof(mResI0[0]));       // just to be sure
+    static_assert(sa == sizeof(pResN0) / sizeof(pResN0[0]));       // just to be sure
+    static_assert(sa == sizeof(mResN0) / sizeof(mResN0[0]));       // just to be sure
+    static_assert(sa == sizeof(pResI2) / sizeof(pResI2[0]));       // just to be sure
+    static_assert(sa == sizeof(mResI2) / sizeof(mResI2[0]));       // just to be sure
+    static_assert(sa == sizeof(pResN2) / sizeof(pResN2[0]));       // just to be sure
+    static_assert(sa == sizeof(mResN2) / sizeof(mResN2[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       add_one{},       0, pResI0, pResI0 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), add_one{},       0, mResI0, mResI0 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       std::negate<>(), 0, pResN0, pResN0 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), std::negate<>(), 0, mResN0, mResN0 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       add_one{},       2, pResI2, pResI2 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), add_one{},       2, mResI2, mResI2 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       std::negate<>(), 2, pResN2, pResN2 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), std::negate<>(), 2, mResN2, mResN2 + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::transform_exclusive_scan(v.begin(), v.end(), v.begin(), size_t{50}, std::plus<>(), add_one{});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 50 + i * 4);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::transform_exclusive_scan(v.begin(), v.end(), v.begin(), size_t{30}, std::plus<>(), add_one{});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 30 + triangle(i - 1) + i);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::transform_exclusive_scan(v.begin(), v.end(), v.begin(), size_t{40}, std::plus<>(), add_one{});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 40 + triangle(i) + i);
+    }
+
+    {
+    std::array<size_t, 0> v, res;
+    std::transform_exclusive_scan(v.begin(), v.end(), res.begin(), size_t{40}, std::plus<>(), add_one{});
+    assert(res.empty());
+    }
+
+//  Make sure that the calculations are done using the init typedef
+    {
+    std::array<unsigned char, 10> v;
+    std::iota(v.begin(), v.end(), static_cast<unsigned char>(1));
+    std::array<size_t, 10> res;
+    std::transform_exclusive_scan(v.begin(), v.end(), res.begin(), size_t{1}, std::multiplies<>(), add_one{});
+
+    assert(res.size() == 10);
+    size_t j = 1;
+    assert(res[0] == 1);
+    for (size_t i = 1; i < res.size(); ++i)
+    {
+        j *= i + 1;
+        assert(res[i] == j);
+    }
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop.pass.cpp
new file mode 100644
index 0000000..d4a95bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T,
+//          class BinaryOperation, class UnaryOperation>
+//   OutputIterator transform_inclusive_scan(InputIterator first, InputIterator last,
+//                                           OutputIterator result,
+//                                           BinaryOperation binary_op,
+//                                           UnaryOperation unary_op);
+
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct add_one {
+    template <typename T>
+    constexpr T operator()(T x) const {
+        return x + 1;
+    }
+};
+
+template <class Iter1, class BOp, class UOp, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, BOp bop, UOp uop, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::transform_inclusive_scan(first, last, out, bop, uop);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::transform_inclusive_scan(out, end, out, bop, uop);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]           = {  1,  3,   5,   7,    9 };
+    const int pResI0[] = {  2,  6,  12,  20,   30 };        // with add_one
+    const int mResI0[] = {  2,  8, 48,  384, 3840 };
+    const int pResN0[] = { -1, -4,  -9, -16,  -25 };        // with negate
+    const int mResN0[] = { -1,  3, -15, 105, -945 };
+    const unsigned sa = sizeof(ia) / sizeof(ia[0] );
+    static_assert(sa == sizeof(pResI0) / sizeof(pResI0[0]));       // just to be sure
+    static_assert(sa == sizeof(mResI0) / sizeof(mResI0[0]));       // just to be sure
+    static_assert(sa == sizeof(pResN0) / sizeof(pResN0[0]));       // just to be sure
+    static_assert(sa == sizeof(mResN0) / sizeof(mResN0[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       add_one{},       pResI0, pResI0 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), add_one{},       mResI0, mResI0 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       std::negate<>(), pResN0, pResN0 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), std::negate<>(), mResN0, mResN0 + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::transform_inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), add_one{});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == (i+1) * 4);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::transform_inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), add_one{});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == triangle(i) + i + 1);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::transform_inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), add_one{});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == triangle(i + 1) + i + 1);
+    }
+
+    {
+    std::array<size_t, 0> v, res;
+    std::transform_inclusive_scan(v.begin(), v.end(), res.begin(), std::plus<>(), add_one{});
+    assert(res.empty());
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop_init.pass.cpp
new file mode 100644
index 0000000..7d89c5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.inclusive.scan/transform_inclusive_scan_bop_uop_init.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template<class InputIterator, class OutputIterator, class T,
+//          class BinaryOperation, class UnaryOperation>
+//   OutputIterator transform_inclusive_scan(InputIterator first, InputIterator last,
+//                                           OutputIterator result,
+//                                           BinaryOperation binary_op,
+//                                           UnaryOperation unary_op,
+//                                           T init);
+
+
+#include <numeric>
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <functional>
+#include <iterator>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct add_one {
+    template <typename T>
+    constexpr T operator()(T x) const {
+        return x + 1;
+    }
+};
+
+template <class Iter1, class BOp, class UOp, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first, Iter1 last, BOp bop, UOp uop, T init, const T *rFirst, const T *rLast)
+{
+    assert((rLast - rFirst) <= 5);  // or else increase the size of "out"
+    T out[5];
+
+    // Not in place
+    T *end = std::transform_inclusive_scan(first, last, out, bop, uop, init);
+    assert(std::equal(out, end, rFirst, rLast));
+
+    // In place
+    std::copy(first, last, out);
+    end = std::transform_inclusive_scan(out, end, out, bop, uop, init);
+    assert(std::equal(out, end, rFirst, rLast));
+}
+
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]           = {  1,  3,   5,    7,     9 };
+    const int pResI0[] = {  2,  6,  12,   20,    30 };        // with add_one
+    const int mResI0[] = {  0,  0,   0,    0,     0 };
+    const int pResN0[] = { -1, -4,  -9,  -16,   -25 };        // with negate
+    const int mResN0[] = {  0,  0,   0,    0,     0 };
+    const int pResI2[] = {  4,  8,  14,   22,    32 };        // with add_one
+    const int mResI2[] = {  4, 16,  96,  768,  7680 };
+    const int pResN2[] = {  1, -2,  -7,  -14,   -23 };        // with negate
+    const int mResN2[] = { -2,  6, -30,  210, -1890 };
+    const unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    static_assert(sa == sizeof(pResI0) / sizeof(pResI0[0]));       // just to be sure
+    static_assert(sa == sizeof(mResI0) / sizeof(mResI0[0]));       // just to be sure
+    static_assert(sa == sizeof(pResN0) / sizeof(pResN0[0]));       // just to be sure
+    static_assert(sa == sizeof(mResN0) / sizeof(mResN0[0]));       // just to be sure
+    static_assert(sa == sizeof(pResI2) / sizeof(pResI2[0]));       // just to be sure
+    static_assert(sa == sizeof(mResI2) / sizeof(mResI2[0]));       // just to be sure
+    static_assert(sa == sizeof(pResN2) / sizeof(pResN2[0]));       // just to be sure
+    static_assert(sa == sizeof(mResN2) / sizeof(mResN2[0]));       // just to be sure
+
+    for (unsigned int i = 0; i < sa; ++i ) {
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       add_one{},       0, pResI0, pResI0 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), add_one{},       0, mResI0, mResI0 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       std::negate<>(), 0, pResN0, pResN0 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), std::negate<>(), 0, mResN0, mResN0 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       add_one{},       2, pResI2, pResI2 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), add_one{},       2, mResI2, mResI2 + i);
+        test(Iter(ia), Iter(ia + i), std::plus<>(),       std::negate<>(), 2, pResN2, pResN2 + i);
+        test(Iter(ia), Iter(ia + i), std::multiplies<>(), std::negate<>(), 2, mResN2, mResN2 + i);
+    }
+}
+
+constexpr size_t triangle(size_t n) { return n*(n+1)/2; }
+
+//  Basic sanity
+TEST_CONSTEXPR_CXX20 void
+basic_tests()
+{
+    {
+    std::array<size_t, 10> v;
+    std::fill(v.begin(), v.end(), 3);
+    std::transform_inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), add_one{}, size_t{50});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 50 + (i + 1) * 4);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 0);
+    std::transform_inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), add_one{}, size_t{30});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 30 + triangle(i) + i + 1);
+    }
+
+    {
+    std::array<size_t, 10> v;
+    std::iota(v.begin(), v.end(), 1);
+    std::transform_inclusive_scan(v.begin(), v.end(), v.begin(), std::plus<>(), add_one{}, size_t{40});
+    for (size_t i = 0; i < v.size(); ++i)
+        assert(v[i] == 40 + triangle(i + 1) + i + 1);
+    }
+
+    {
+    std::array<size_t, 0> v, res;
+    std::transform_inclusive_scan(v.begin(), v.end(), res.begin(), std::plus<>(), add_one{}, size_t{1});
+    assert(res.empty());
+    }
+
+//  Make sure that the calculations are done using the init typedef
+    {
+    std::array<unsigned char, 10> v;
+    std::iota(v.begin(), v.end(), static_cast<unsigned char>(1));
+    std::array<size_t, 10> res;
+    std::transform_inclusive_scan(v.begin(), v.end(), res.begin(), std::multiplies<>(), add_one{}, size_t{1});
+
+    assert(res.size() == 10);
+    size_t j = 2;
+    assert(res[0] == 2);
+    for (size_t i = 1; i < res.size(); ++i)
+    {
+        j *= i + 2;
+        assert(res[i] == j);
+    }
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    basic_tests();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_init_bop_uop.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_init_bop_uop.pass.cpp
new file mode 100644
index 0000000..42911b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_init_bop_uop.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <class InputIterator1, class T,
+//           class BinaryOperation, class UnaryOperation>
+//    T transform_reduce(InputIterator1 first1, InputIterator1 last1,
+//                       T init, BinaryOperation binary_op, UnaryOperation unary_op);
+//
+
+#include <numeric>
+#include <cassert>
+#include <utility>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+struct identity
+{
+    template <class T>
+    constexpr decltype(auto) operator()(T&& x) const {
+        return std::forward<T>(x);
+    }
+};
+
+struct twice
+{
+    template <class T>
+    constexpr auto operator()(const T& x) const {
+        return 2 * x;
+    }
+};
+
+template <class Iter1, class T, class BOp, class UOp>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first1, Iter1 last1, T init, BOp bOp, UOp uOp, T x)
+{
+    static_assert( std::is_same_v<T,
+                    decltype(std::transform_reduce(first1, last1, init, bOp, uOp))> );
+    assert(std::transform_reduce(first1, last1, init, bOp, uOp) == x);
+}
+
+template <class Iter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]          = {1, 2, 3, 4, 5, 6};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+
+    test(Iter(ia), Iter(ia),    0, std::plus<>(),       identity(),       0);
+    test(Iter(ia), Iter(ia),    1, std::multiplies<>(), identity(),       1);
+    test(Iter(ia), Iter(ia+1),  0, std::multiplies<>(), identity(),       0);
+    test(Iter(ia), Iter(ia+1),  2, std::plus<>(),       identity(),       3);
+    test(Iter(ia), Iter(ia+2),  0, std::plus<>(),       identity(),       3);
+    test(Iter(ia), Iter(ia+2),  3, std::multiplies<>(), identity(),       6);
+    test(Iter(ia), Iter(ia+sa), 4, std::multiplies<>(), identity(),    2880);
+    test(Iter(ia), Iter(ia+sa), 4, std::plus<>(),       identity(),      25);
+
+    test(Iter(ia), Iter(ia),    0, std::plus<>(),       twice(),       0);
+    test(Iter(ia), Iter(ia),    1, std::multiplies<>(), twice(),       1);
+    test(Iter(ia), Iter(ia+1),  0, std::multiplies<>(), twice(),       0);
+    test(Iter(ia), Iter(ia+1),  2, std::plus<>(),       twice(),       4);
+    test(Iter(ia), Iter(ia+2),  0, std::plus<>(),       twice(),       6);
+    test(Iter(ia), Iter(ia+2),  3, std::multiplies<>(), twice(),      24);
+    test(Iter(ia), Iter(ia+sa), 4, std::multiplies<>(), twice(),  184320); // 64 * 2880
+    test(Iter(ia), Iter(ia+sa), 4, std::plus<>(),       twice(),      46);
+}
+
+template <typename T, typename Init>
+TEST_CONSTEXPR_CXX20 void
+test_return_type()
+{
+    T *p = nullptr;
+    static_assert( std::is_same_v<Init,
+         decltype(std::transform_reduce(p, p, Init{}, std::plus<>(), identity()))> );
+}
+
+TEST_CONSTEXPR_CXX20 void
+test_move_only_types()
+{
+    MoveOnly ia[] = {{1}, {2}, {3}};
+    assert(60 ==
+        std::transform_reduce(std::begin(ia), std::end(ia), MoveOnly{0},
+        [](const MoveOnly& lhs, const MoveOnly& rhs) { return MoveOnly{lhs.get() + rhs.get()}; },
+        [](const MoveOnly& target) { return MoveOnly{target.get() * 10}; }).get());
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_return_type<char, int>();
+    test_return_type<int, int>();
+    test_return_type<int, unsigned long>();
+    test_return_type<float, int>();
+    test_return_type<short, float>();
+    test_return_type<double, char>();
+    test_return_type<char, double>();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*> >();
+    test<forward_iterator      <const int*> >();
+    test<bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*> >();
+    test<const int*>();
+    test<      int*>();
+
+//  Make sure the math is done using the correct type
+    {
+    auto v = {1, 2, 3, 4, 5, 6};
+    unsigned res = std::transform_reduce(v.begin(), v.end(), 1U, std::multiplies<>(), twice());
+    assert(res == 46080);       // 6! * 64 will not fit into a char
+    }
+
+    test_move_only_types();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_iter_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_iter_init.pass.cpp
new file mode 100644
index 0000000..9e888fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_iter_init.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <class InputIterator1, class InputIterator2, class T>
+//   T transform_reduce(InputIterator1 first1, InputIterator1 last1,
+//                      InputIterator2 first2, T init);
+
+
+#include <numeric>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2, class T>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first1, Iter1 last1, Iter2 first2, T init, T x)
+{
+    static_assert( std::is_same_v<T,
+            decltype(std::transform_reduce(first1, last1, first2, init))> );
+    assert(std::transform_reduce(first1, last1, first2, init) == x);
+}
+
+template <class SIter, class UIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]          = {1, 2, 3, 4, 5, 6};
+    unsigned int ua[] = {2, 4, 6, 8, 10,12};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    assert(sa == sizeof(ua) / sizeof(ua[0]));       // just to be sure
+
+    test(SIter(ia), SIter(ia),    UIter(ua), 0,   0);
+    test(UIter(ua), UIter(ua),    SIter(ia), 1,   1);
+    test(SIter(ia), SIter(ia+1),  UIter(ua), 0,   2);
+    test(UIter(ua), UIter(ua+1),  SIter(ia), 2,   4);
+    test(SIter(ia), SIter(ia+2),  UIter(ua), 0,  10);
+    test(UIter(ua), UIter(ua+2),  SIter(ia), 3,  13);
+    test(SIter(ia), SIter(ia+sa), UIter(ua), 0, 182);
+    test(UIter(ua), UIter(ua+sa), SIter(ia), 4, 186);
+}
+
+template <typename T, typename Init>
+TEST_CONSTEXPR_CXX20 void
+test_return_type()
+{
+    T *p = nullptr;
+    static_assert( std::is_same_v<Init,
+                       decltype(std::transform_reduce(p, p, p, Init{}))> );
+}
+
+TEST_CONSTEXPR_CXX20 void
+test_move_only_types()
+{
+    MoveOnly ia[] = {{1}, {2}, {3}};
+    MoveOnly ib[] = {{1}, {2}, {3}};
+    assert(14 ==
+        std::transform_reduce(std::begin(ia), std::end(ia), std::begin(ib), MoveOnly{0}).get());
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_return_type<char, int>();
+    test_return_type<int, int>();
+    test_return_type<int, unsigned long>();
+    test_return_type<float, int>();
+    test_return_type<short, float>();
+    test_return_type<double, char>();
+    test_return_type<char, double>();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<cpp17_input_iterator        <const int*>, forward_iterator      <const unsigned int*> >();
+    test<cpp17_input_iterator        <const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<cpp17_input_iterator        <const int*>, random_access_iterator<const unsigned int*> >();
+
+    test<forward_iterator      <const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<forward_iterator      <const int*>, forward_iterator      <const unsigned int*> >();
+    test<forward_iterator      <const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<forward_iterator      <const int*>, random_access_iterator<const unsigned int*> >();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator      <const unsigned int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const unsigned int*> >();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<random_access_iterator<const int*>, forward_iterator      <const unsigned int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const unsigned int*> >();
+
+//  just plain pointers (const vs. non-const, too)
+    test<const int*, const unsigned int *>();
+    test<const int*,       unsigned int *>();
+    test<      int*, const unsigned int *>();
+    test<      int*,       unsigned int *>();
+
+    test_move_only_types();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_iter_init_op_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_iter_init_op_op.pass.cpp
new file mode 100644
index 0000000..74dd3a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.ops/transform.reduce/transform_reduce_iter_iter_iter_init_op_op.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <numeric>
+
+// Became constexpr in C++20
+// template <class InputIterator1, class InputIterator2, class T,
+//           class BinaryOperation1, class BinaryOperation2>
+//    T transform_reduce(InputIterator1 first1, InputIterator1 last1,
+//                       InputIterator2 first2, T init,
+//                       BinaryOperation1 binary_op1, BinaryOperation2 binary_op2);
+//
+
+#include <numeric>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+template <class Iter1, class Iter2, class T, class Op1, class Op2>
+TEST_CONSTEXPR_CXX20 void
+test(Iter1 first1, Iter1 last1, Iter2 first2, T init, Op1 op1, Op2 op2, T x)
+{
+    static_assert( std::is_same_v<T,
+         decltype(std::transform_reduce(first1, last1, first2, init, op1, op2))> );
+    assert(std::transform_reduce(first1, last1, first2, init, op1, op2) == x);
+}
+
+template <class SIter, class UIter>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    int ia[]          = {1, 2, 3, 4, 5, 6};
+    unsigned int ua[] = {2, 4, 6, 8, 10,12};
+    unsigned sa = sizeof(ia) / sizeof(ia[0]);
+    assert(sa == sizeof(ua) / sizeof(ua[0]));       // just to be sure
+
+    test(SIter(ia), SIter(ia),    UIter(ua), 0, std::plus<>(), std::multiplies<>(),       0);
+    test(UIter(ua), UIter(ua),    SIter(ia), 1, std::multiplies<>(), std::plus<>(),       1);
+    test(SIter(ia), SIter(ia+1),  UIter(ua), 0, std::multiplies<>(), std::plus<>(),       0);
+    test(UIter(ua), UIter(ua+1),  SIter(ia), 2, std::plus<>(), std::multiplies<>(),       4);
+    test(SIter(ia), SIter(ia+2),  UIter(ua), 0, std::plus<>(), std::multiplies<>(),      10);
+    test(UIter(ua), UIter(ua+2),  SIter(ia), 3, std::multiplies<>(), std::plus<>(),      54);
+    test(SIter(ia), SIter(ia+sa), UIter(ua), 4, std::multiplies<>(), std::plus<>(), 2099520);
+    test(UIter(ua), UIter(ua+sa), SIter(ia), 4, std::plus<>(), std::multiplies<>(),     186);
+}
+
+template <typename T, typename Init>
+TEST_CONSTEXPR_CXX20 void
+test_return_type()
+{
+    T *p = nullptr;
+    static_assert( std::is_same_v<Init,
+       decltype(std::transform_reduce(p, p, p, Init{}, std::plus<>(), std::multiplies<>()))> );
+}
+
+TEST_CONSTEXPR_CXX20 void
+test_move_only_types()
+{
+    MoveOnly ia[] = {{1}, {2}, {3}};
+    MoveOnly ib[] = {{1}, {2}, {3}};
+    assert(14 ==
+        std::transform_reduce(std::begin(ia), std::end(ia), std::begin(ib), MoveOnly{0},
+        [](const MoveOnly& lhs, const MoveOnly& rhs) { return MoveOnly{lhs.get() + rhs.get()}; },
+        [](const MoveOnly& lhs, const MoveOnly& rhs) { return MoveOnly{lhs.get() * rhs.get()}; }).get());
+}
+
+TEST_CONSTEXPR_CXX20 bool
+test()
+{
+    test_return_type<char, int>();
+    test_return_type<int, int>();
+    test_return_type<int, unsigned long>();
+    test_return_type<float, int>();
+    test_return_type<short, float>();
+    test_return_type<double, char>();
+    test_return_type<char, double>();
+
+//  All the iterator categories
+    test<cpp17_input_iterator        <const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<cpp17_input_iterator        <const int*>, forward_iterator      <const unsigned int*> >();
+    test<cpp17_input_iterator        <const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<cpp17_input_iterator        <const int*>, random_access_iterator<const unsigned int*> >();
+
+    test<forward_iterator      <const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<forward_iterator      <const int*>, forward_iterator      <const unsigned int*> >();
+    test<forward_iterator      <const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<forward_iterator      <const int*>, random_access_iterator<const unsigned int*> >();
+
+    test<bidirectional_iterator<const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator      <const unsigned int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const unsigned int*> >();
+
+    test<random_access_iterator<const int*>, cpp17_input_iterator        <const unsigned int*> >();
+    test<random_access_iterator<const int*>, forward_iterator      <const unsigned int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const unsigned int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const unsigned int*> >();
+
+//  just plain pointers (const vs. non-const, too)
+    test<const int*, const unsigned int *>();
+    test<const int*,       unsigned int *>();
+    test<      int*, const unsigned int *>();
+    test<      int*,       unsigned int *>();
+
+    test_move_only_types();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numeric.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numeric.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numeric.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/numerics.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/numerics.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/numerics.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/assign.pass.cpp
new file mode 100644
index 0000000..9923d93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/assign.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// discard_block_engine& operator=(const discard_block_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::ranlux24 E;
+    E e1(2);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48 E;
+    E e1(3);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/copy.pass.cpp
new file mode 100644
index 0000000..9072ef2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/copy.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// discard_block_engine(const discard_block_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::ranlux24 E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48 E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_engine_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_engine_copy.pass.cpp
new file mode 100644
index 0000000..ea0f458
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_engine_copy.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// explicit discard_block_engine(const Engine& e);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::ranlux24_base Engine;
+        typedef std::ranlux24 Adaptor;
+        Engine e;
+        Adaptor a(e);
+        assert(a.base() == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_engine_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_engine_move.pass.cpp
new file mode 100644
index 0000000..6c8034a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_engine_move.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// explicit discard_block_engine(const Engine& e);
+
+#include <random>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::ranlux24_base Engine;
+        typedef std::ranlux24 Adaptor;
+        Engine e;
+        Engine e0 = e;
+        Adaptor a(std::move(e0));
+        assert(a.base() == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_result_type.pass.cpp
new file mode 100644
index 0000000..1df5615
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_result_type.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// explicit discard_block_engine(result_type s = default_seed);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "15136306 8587749 2346244 16479026 15515802 9510553 "
+    "16090340 14501685 13839944 10789678 11581259 9590790 5840316 5953700 "
+    "13398366 8134459 16629731 6851902 15583892 1317475 4231148 9092691 "
+    "5707268 2355175 0 0";
+    std::ranlux24 e1(0);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+void
+test2()
+{
+    const char* a = "10880375256626 126660097854724 33643165434010 "
+    "78293780235492 179418984296008 96783156950859 238199764491708 "
+    "34339434557790 155299155394531 29014415493780 209265474179052 "
+    "263777435457028 0 0";
+    std::ranlux48 e1(0);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_sseq.pass.cpp
new file mode 100644
index 0000000..67c1376
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/ctor_sseq.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// template<class Sseq> explicit discard_block_engine(Sseq& q);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "13604817 711567 9760686 13278398 3323440 175548 5553651 "
+    "3028863 10748297 2216688 275779 14778841 14438394 9483441 4229545 "
+    "14657301 12636508 15978210 1653340 1718567 9272421 14302862 7940348 "
+    "889045 0 0";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::ranlux24 e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+void
+test2()
+{
+    const char* a = "241408498702289 172342669275054 191026374555184 "
+    "61020585639411 231929771458953 142769679250755 198672786411514 "
+    "183712717244841 227473912549724 62843577252444 68782400568421 "
+    "159248704678140 0 0";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::ranlux48 e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/default.pass.cpp
new file mode 100644
index 0000000..0662fa5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/default.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// explicit discard_block_engine();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::ranlux24 e1;
+    std::ranlux24 e2(std::ranlux24_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 15039276);
+}
+
+void
+test2()
+{
+    std::ranlux48 e1;
+    std::ranlux48 e2(std::ranlux48_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 23459059301164ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/discard.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/discard.pass.cpp
new file mode 100644
index 0000000..ef925bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/discard.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::ranlux24 e1;
+    std::ranlux24 e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    std::ranlux48 e1;
+    std::ranlux48 e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/eval.pass.cpp
new file mode 100644
index 0000000..3f35697
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/eval.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::ranlux24 e;
+    assert(e() == 15039276u);
+    assert(e() == 16323925u);
+    assert(e() == 14283486u);
+}
+
+void
+test2()
+{
+    std::ranlux48 e;
+    assert(e() == 23459059301164ull);
+    assert(e() == 28639057539807ull);
+    assert(e() == 276846226770426ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/io.pass.cpp
new file mode 100644
index 0000000..c912287
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/io.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// template <class charT, class traits,
+//           class Engine, size_t p, size_t r>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const discard_block_engine<Engine, p, r>& x);
+//
+// template <class charT, class traits,
+//           class Engine, size_t p, size_t r>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            discard_block_engine<Engine, p, r>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::ranlux24 E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48 E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/result_type.pass.cpp
new file mode 100644
index 0000000..469d380
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/result_type.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+// {
+// public:
+//     // types
+//     typedef typename Engine::result_type result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    static_assert((std::is_same<
+        std::ranlux24::result_type,
+        std::uint_fast32_t>::value), "");
+}
+
+void
+test2()
+{
+    static_assert((std::is_same<
+        std::ranlux48::result_type,
+        std::uint_fast64_t>::value), "");
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/seed_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/seed_result_type.pass.cpp
new file mode 100644
index 0000000..a2f8052
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/seed_result_type.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// void seed(result_type s = default_seed);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::ranlux24 E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+void
+test2()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::ranlux48 E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/seed_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/seed_sseq.pass.cpp
new file mode 100644
index 0000000..6e99e8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/seed_sseq.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::ranlux24 e1;
+    std::ranlux24 e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::ranlux48 e1;
+    std::ranlux48 e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/values.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/values.pass.cpp
new file mode 100644
index 0000000..423a629
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.disc/values.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t p, size_t r>
+// class discard_block_engine
+// {
+// public:
+//     // types
+//     typedef typename Engine::result_type result_type;
+//
+//     // engine characteristics
+//     static constexpr size_t block_size = p;
+//     static constexpr size_t used_block = r;
+//     static constexpr result_type min() { return Engine::min(); }
+//     static constexpr result_type max() { return Engine::max(); }
+
+#include <random>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void where(const T &) {}
+
+void
+test1()
+{
+    typedef std::ranlux24 E;
+    static_assert((E::block_size == 223), "");
+    static_assert((E::used_block == 23), "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFF), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFF));
+#endif
+    where(E::block_size);
+    where(E::used_block);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48 E;
+    static_assert((E::block_size == 389), "");
+    static_assert((E::used_block == 11), "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFFFFFFFFull), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFFFFFFFFull));
+#endif
+    where(E::block_size);
+    where(E::used_block);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/assign.pass.cpp
new file mode 100644
index 0000000..014ed6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/assign.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// independent_bits_engine& operator=(const independent_bits_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::independent_bits_engine<std::ranlux24, 32, unsigned> E;
+    E e1(2);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::independent_bits_engine<std::ranlux48, 64, unsigned long long> E;
+    E e1(3);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/copy.pass.cpp
new file mode 100644
index 0000000..d4db4cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/copy.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// independent_bits_engine(const independent_bits_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::independent_bits_engine<std::ranlux24, 32, unsigned> E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::independent_bits_engine<std::ranlux48, 64, unsigned long long> E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_engine_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_engine_copy.pass.cpp
new file mode 100644
index 0000000..aa9569b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_engine_copy.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// explicit independent_bits_engine(const Engine& e);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::mt19937 Engine;
+        typedef std::independent_bits_engine<Engine, 24, unsigned> Adaptor;
+        Engine e;
+        Adaptor a(e);
+        assert(a.base() == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_engine_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_engine_move.pass.cpp
new file mode 100644
index 0000000..3e3afb0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_engine_move.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// explicit independent_bits_engine(const Engine& e);
+
+#include <random>
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::mt19937 Engine;
+        typedef std::independent_bits_engine<Engine, 24, unsigned> Adaptor;
+        Engine e;
+        Engine e0 = e;
+        Adaptor a(std::move(e0));
+        assert(a.base() == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_result_type.pass.cpp
new file mode 100644
index 0000000..7ffbd36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_result_type.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// explicit independent_bits_engine(result_type s = default_seed);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "15136306 8587749 2346244 16479026 15515802 9510553 "
+    "16090340 14501685 13839944 10789678 11581259 9590790 5840316 5953700 "
+    "13398366 8134459 16629731 6851902 15583892 1317475 4231148 9092691 "
+    "5707268 2355175 0 0";
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e1(0);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+void
+test2()
+{
+    const char* a = "10880375256626 126660097854724 33643165434010 "
+    "78293780235492 179418984296008 96783156950859 238199764491708 "
+    "34339434557790 155299155394531 29014415493780 209265474179052 "
+    "263777435457028 0 0";
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e1(0);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_sseq.pass.cpp
new file mode 100644
index 0000000..73f7607
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/ctor_sseq.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// template<class Sseq> explicit independent_bits_engine(Sseq& q);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "13604817 711567 9760686 13278398 3323440 175548 5553651 "
+    "3028863 10748297 2216688 275779 14778841 14438394 9483441 4229545 "
+    "14657301 12636508 15978210 1653340 1718567 9272421 14302862 7940348 "
+    "889045 0 0";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+void
+test2()
+{
+    const char* a = "241408498702289 172342669275054 191026374555184 "
+    "61020585639411 231929771458953 142769679250755 198672786411514 "
+    "183712717244841 227473912549724 62843577252444 68782400568421 "
+    "159248704678140 0 0";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/default.pass.cpp
new file mode 100644
index 0000000..f3f4ecb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/default.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// explicit independent_bits_engine();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e1;
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e2(std::ranlux24_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 2066486613);
+}
+
+void
+test2()
+{
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e1;
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e2(std::ranlux48_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 18223106896348967647ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/discard.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/discard.pass.cpp
new file mode 100644
index 0000000..cf6a069
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/discard.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e1;
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e1;
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/eval.pass.cpp
new file mode 100644
index 0000000..9d60eab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/eval.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class UIntType, UIntType Min, UIntType Max>
+class rand1
+{
+public:
+    // types
+    typedef UIntType result_type;
+
+private:
+    result_type x_;
+
+    static_assert(Min < Max, "rand1 invalid parameters");
+public:
+
+#if TEST_STD_VER < 11 && defined(_LIBCPP_VERSION)
+    // Workaround for lack of constexpr in C++03
+    static const result_type _Min = Min;
+    static const result_type _Max = Max;
+#endif
+
+    static TEST_CONSTEXPR result_type min() {return Min;}
+    static TEST_CONSTEXPR result_type max() {return Max;}
+
+    explicit rand1(result_type sd = Min) : x_(sd)
+    {
+        if (x_ > Max)
+            x_ = Max;
+    }
+
+    result_type operator()()
+    {
+        result_type r = x_;
+        if (x_ < Max)
+            ++x_;
+        else
+            x_ = Min;
+        return r;
+    }
+};
+
+void
+test1()
+{
+   typedef std::independent_bits_engine<rand1<unsigned, 0, 10>, 16, unsigned> E;
+
+    E e;
+    assert(e() == 6958);
+}
+
+void
+test2()
+{
+    typedef std::independent_bits_engine<rand1<unsigned, 0, 100>, 16, unsigned> E;
+
+    E e;
+    assert(e() == 66);
+}
+
+void
+test3()
+{
+    typedef std::independent_bits_engine<rand1<unsigned, 0, 0xFFFFFFFF>, 32, unsigned> E;
+
+    E e(5);
+    assert(e() == 5);
+}
+
+void
+test4()
+{
+    typedef std::independent_bits_engine<rand1<unsigned, 0, 0xFFFFFFFF>, 7, unsigned> E;
+
+    E e(129);
+    assert(e() == 1);
+}
+
+void
+test5()
+{
+    typedef std::independent_bits_engine<rand1<unsigned, 2, 3>, 1, unsigned> E;
+
+    E e(6);
+    assert(e() == 1);
+}
+
+void
+test6()
+{
+    typedef std::independent_bits_engine<rand1<unsigned, 2, 3>, 11, unsigned> E;
+
+    E e(6);
+    assert(e() == 1365);
+}
+
+void
+test7()
+{
+    typedef std::independent_bits_engine<rand1<unsigned, 2, 3>, 32, unsigned> E;
+
+    E e(6);
+    assert(e() == 2863311530u);
+}
+
+void
+test8()
+{
+    typedef std::independent_bits_engine<std::mt19937, 64, unsigned long long> E;
+
+    E e(6);
+    assert(e() == 16470362623952407241ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+    test7();
+    test8();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/io.pass.cpp
new file mode 100644
index 0000000..52045c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/io.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// template <class charT, class traits,
+//           class Engine, size_t w, class UIntType>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const independent_bits_engine<Engine, w, UIntType>& x);
+//
+// template <class charT, class traits,
+//           class Engine, size_t w, class UIntType>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            independent_bits_engine<Engine, w, UIntType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::independent_bits_engine<std::ranlux24, 32, unsigned> E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::independent_bits_engine<std::ranlux48, 64, unsigned long long> E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/result_type.pass.cpp
new file mode 100644
index 0000000..1b6fb87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/result_type.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class UIntType, UIntType Min, UIntType Max>
+class rand1
+{
+public:
+    // types
+    typedef UIntType result_type;
+
+private:
+    result_type x_;
+
+    static_assert(Min < Max, "rand1 invalid parameters");
+public:
+
+#if TEST_STD_VER < 11 && defined(_LIBCPP_VERSION)
+    // Workaround for lack of constexpr in C++03
+    static const result_type _Min = Min;
+    static const result_type _Max = Max;
+#endif
+
+    static TEST_CONSTEXPR result_type min() {return Min;}
+    static TEST_CONSTEXPR result_type max() {return Max;}
+
+    explicit rand1(result_type sd = Min) : x_(sd)
+    {
+        if (x_ < Min)
+            x_ = Min;
+        if (x_ > Max)
+            x_ = Max;
+    }
+
+    result_type operator()()
+    {
+        result_type r = x_;
+        if (x_ < Max)
+            ++x_;
+        else
+            x_ = Min;
+        return r;
+    }
+};
+
+void
+test1()
+{
+    static_assert((std::is_same<
+        std::independent_bits_engine<rand1<unsigned long, 0, 10>, 16, unsigned>::result_type,
+        unsigned>::value), "");
+}
+
+void
+test2()
+{
+    static_assert((std::is_same<
+        std::independent_bits_engine<rand1<unsigned long, 0, 10>, 16, unsigned long long>::result_type,
+        unsigned long long>::value), "");
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/seed_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/seed_result_type.pass.cpp
new file mode 100644
index 0000000..e633d96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/seed_result_type.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// void seed(result_type s = default_seed);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::independent_bits_engine<std::ranlux24, 32, unsigned> E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+void
+test2()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::independent_bits_engine<std::ranlux48, 64, unsigned long long> E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/seed_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/seed_sseq.pass.cpp
new file mode 100644
index 0000000..c2cefef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/seed_sseq.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e1;
+    std::independent_bits_engine<std::ranlux24, 32, unsigned> e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e1;
+    std::independent_bits_engine<std::ranlux48, 64, unsigned long long> e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/values.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/values.pass.cpp
new file mode 100644
index 0000000..be25ad1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.ibits/values.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t w, class UIntType>
+// class independent_bits_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+//
+//     // engine characteristics
+//     static constexpr result_type min() { return 0; }
+//     static constexpr result_type max() { return 2^w - 1; }
+
+#include <random>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::independent_bits_engine<std::ranlux24, 32, unsigned> E;
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFFFF), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFFFF));
+#endif
+}
+
+void
+test2()
+{
+    typedef std::independent_bits_engine<std::ranlux48, 64, unsigned long long> E;
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFFFFFFFFFFFFull), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFFFFFFFFFFFFull));
+#endif
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/assign.pass.cpp
new file mode 100644
index 0000000..49a6010
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/assign.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// shuffle_order_engine& operator=(const shuffle_order_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::knuth_b E;
+    E e1(2);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/copy.pass.cpp
new file mode 100644
index 0000000..aab2941
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/copy.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// shuffle_order_engine(const shuffle_order_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::knuth_b E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_engine_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_engine_copy.pass.cpp
new file mode 100644
index 0000000..e66976b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_engine_copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// explicit shuffle_order_engine(const Engine& e);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::minstd_rand0 Engine;
+        typedef std::knuth_b Adaptor;
+        Engine e;
+        Adaptor a(e);
+        for (unsigned k = 0; k <= Adaptor::table_size; ++k) {
+            (void)e();
+        }
+
+        assert(a.base() == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_engine_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_engine_move.pass.cpp
new file mode 100644
index 0000000..3ff0e58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_engine_move.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// explicit shuffle_order_engine(const Engine& e);
+
+#include <random>
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::minstd_rand0 Engine;
+        typedef std::knuth_b Adaptor;
+        Engine e;
+        Engine e0 = e;
+        Adaptor a(std::move(e0));
+        for (unsigned k = 0; k <= Adaptor::table_size; ++k) {
+            (void)e();
+        }
+
+        assert(a.base() == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_result_type.pass.cpp
new file mode 100644
index 0000000..e7b5762
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_result_type.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// explicit shuffle_order_engine(result_type s = default_seed);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "1771550148 168070 677268843 1194115201 1259501992 "
+        "703671065 407145426 1010275440 1693606898 1702877348 745024267 "
+        "1793193459 416963415 664975744 742430420 1148079870 637806795 "
+        "1527921388 165317290 1791337459 1435426120 375508442 1863429808 "
+        "1910758855 653618747 991426424 578291095 1974930990 1157900898 "
+        "343583572 25567821 221638147 1335692731 1341167826 1019292670 "
+        "774852571 606325389 700907908 1211405961 1955012967 1403137269 "
+        "1010152376 1772753897 486628401 1145807831 1106352968 1560917450 "
+        "679350398 1819071734 1561434646 781928982 1427964481 1669276942 "
+        "811199786 1608612146 1272705739 1428231253 1857946652 2097152784 "
+        "197742477 1300609030 99924397 97128425 349867255 408729299 1860625187 "
+        "2018133942 1420442476 1948474080 1025729457 1583749330 15184745 "
+        "1806938869 1655319056 296727307 638820415 1383963552 880037807 "
+        "1075545360 1321008721 1507631161 597371974 544717293 340756290 "
+        "1899563128 1465595994 634440068 777915521 545718511 2135841687 "
+        "1902073804 712854586 135760289 1095544109 285050585 1956649285 "
+        "987446484 259432572 891434194 1488577086 330596852 801096775 "
+        "1458514382 1872871416 1682074633 1153627723 1538775345 51662594 "
+        "709823970 739804705 2114844452 1188863267 1037076781 1172179215 "
+        "1948572574 533634468 902793804 1283497773 273836696 315894151 "
+        "653420473 1954002600 1601768276 64415940 306945492 577163950 "
+        "210874151 813838307 857078006 1737226413 376658679 1868110244 "
+        "1117951768 1080937173 1746896638 1842856729 1883887269 2141922362 "
+        "1020763473 1872318475 978729834 1935067665 1189895487 1205729145 "
+        "1034046923 1788963337 188263312 898072753 1393688555 1119406056 "
+        "1900835472 1375045132 1312008157 559007303 2142269543 413383599 "
+        "628550348 573639243 1100665718 464587168 65992084 1027393936 "
+        "1641360472 1918007189 69800406 609352380 35938117 569027612 902394793 "
+        "1019770837 221470752 669768613 1839284764 1979413630 1335703733 "
+        "1526078440 1403144959 1139398206 753967943 1785700701 1187714882 "
+        "1063522909 1123137582 192083544 680202567 1109090588 327456556 "
+        "1709233078 191596027 1076438936 1306955024 1530346852 127901445 "
+        "8455468 377129974 1199230721 1336700752 1103107597 703058228 "
+        "844612202 530372344 1910850558 47387421 1871435357 1168551137 "
+        "1101007744 1918050856 803711675 309982095 73743043 301259382 "
+        "1647477295 1644236294 859823662 638826571 1487427444 335916581 "
+        "15468904 140348241 895842081 410006250 1847504174 536600445 "
+        "1359845362 1400027760 288242141 1910039802 1453396858 1761991428 "
+        "2137921913 357210187 1414819544 1933136424 943782705 841706193 "
+        "1081202962 1919045067 333546776 988345562 337850989 314809455 "
+        "1750287624 853099962 1450233962 142805884 1399258689 247367726 "
+        "2128513937 1151147433 654730608 351121428 12778440 18876380 "
+        "1575222551 587014441 411835569 380613902 1771550148";
+    std::knuth_b e1(10);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_sseq.pass.cpp
new file mode 100644
index 0000000..1b9c6a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/ctor_sseq.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// template<class Sseq> explicit shuffle_order_engine(Sseq& q);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "1894661934 884942216 1899568837 1561547157 525417712 "
+        "242729120 1476874187 1208468883 1983666902 1953485886 1507290666 "
+        "1317123450 632390874 696850315 1734917114 218976032 1690682513 "
+        "1944862534 456017951 2072049961 1348874775 1700965693 828093387 "
+        "2071522749 1077957279 1055942061 413360419 238964088 475007126 "
+        "1248050783 1516729632 1044035134 9617501 580065782 1737324341 "
+        "2022534575 219953662 941840747 415472792 1381878747 200458524 "
+        "1852054372 1849850586 1318041283 1026024576 101363422 660501483 "
+        "705453438 298717379 1873705814 673416290 868766340 614560427 "
+        "1668238166 532360730 969915708 1972423626 1966307090 97417947 "
+        "920896215 588041576 495024338 522400288 1068491480 878048146 "
+        "1995051285 17282737 560668414 2143274709 127339385 1299331283 "
+        "99667038 66663006 1566161755 773555006 272986904 1065825536 "
+        "1168683925 1185292013 1144552919 1489883454 811887358 279732868 "
+        "628609193 1562647158 1833265343 1742736292 639398211 357562689 "
+        "896869717 501615326 1775469607 1032409784 43371928 955037563 "
+        "1023543663 1354331571 1071539244 562210166 138213162 1518791327 "
+        "1335204647 1727874626 2114964448 1058152392 1055171537 348065433 "
+        "190278003 399246038 1389247438 1639480282 382424917 2144508195 "
+        "1531185764 1342593547 1359065400 1176108308 1412845568 968776497 "
+        "5573525 1332437854 323541262 329396230 2097079291 1110029273 "
+        "1071549822 739994612 1011644107 1074473050 478563727 894301674 "
+        "290189565 280656618 1121689914 1630931232 579945916 1870220126 "
+        "71516543 1535179528 1893792038 1107650479 1893348357 93154853 "
+        "138035708 683805596 1535656875 1326628479 1469623399 1751042846 "
+        "661214234 1947241260 1780560187 690441964 1403944207 1687457460 "
+        "1428487938 1877084153 1618585041 1383427538 461185097 869443256 "
+        "1254069404 1739961370 1245924391 138197640 1257913073 1915996843 "
+        "641653536 1755587965 1889101622 1732723706 2009073422 1611621773 "
+        "315899200 738279016 94909546 1711873548 1620302377 181922632 "
+        "1704446343 1345319468 2076463060 357902023 157605314 1025175647 "
+        "865799248 138769064 124418006 1591838311 675218651 1096276609 "
+        "1858759850 732186041 769493777 735387805 894450150 638142050 "
+        "720101232 1671055379 636619387 898507955 118193981 63865192 "
+        "1787942091 204050966 2100684950 1580797970 1951284753 1020070334 "
+        "960149537 1041144801 823914651 558983501 1742229329 708805658 "
+        "804904097 1023665826 1260041465 1180659188 590074436 301564006 "
+        "324841922 714752380 1967212989 290476911 815113546 815183409 "
+        "1989370850 1182975807 870784323 171062356 1711897606 2024645183 "
+        "1333203966 314683764 1785282634 603713754 1904315050 1874254109 "
+        "1298675767 1967311508 1946285744 753588304 1847558969 1457540010 "
+        "528986741 97857407 1864449494 1868752281 1171249392 1353422942 "
+        "832597170 457192338 335135800 1925268166 1845956613 296546482 "
+        "1894661934";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::knuth_b e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/default.pass.cpp
new file mode 100644
index 0000000..3b3cc18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/default.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// explicit shuffle_order_engine();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::knuth_b e1;
+    std::knuth_b e2(std::minstd_rand0::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 152607844u);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/discard.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/discard.pass.cpp
new file mode 100644
index 0000000..a4ed406
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/discard.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::knuth_b e1;
+    std::knuth_b e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/eval.pass.cpp
new file mode 100644
index 0000000..4eecfea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/eval.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class UIntType, UIntType Min, UIntType Max>
+class rand1
+{
+public:
+    // types
+    typedef UIntType result_type;
+
+private:
+    result_type x_;
+
+    static_assert(Min < Max, "rand1 invalid parameters");
+public:
+
+#if TEST_STD_VER < 11 && defined(_LIBCPP_VERSION)
+    // Workaround for lack of constexpr in C++03
+    static const result_type _Min = Min;
+    static const result_type _Max = Max;
+#endif
+
+    static TEST_CONSTEXPR result_type min() {return Min;}
+    static TEST_CONSTEXPR result_type max() {return Max;}
+
+    explicit rand1(result_type sd = Min) : x_(sd)
+    {
+        if (x_ > Max)
+            x_ = Max;
+    }
+
+    result_type operator()()
+    {
+        result_type r = x_;
+        if (x_ < Max)
+            ++x_;
+        else
+            x_ = Min;
+        return r;
+    }
+};
+
+void
+test1()
+{
+   typedef std::knuth_b E;
+
+    E e;
+    assert(e() == 152607844u);
+}
+
+void
+test2()
+{
+    typedef rand1<unsigned long long, 0, 0xFFFFFFFFFFFFFFFFull> E0;
+    typedef std::shuffle_order_engine<E0, 101> E;
+    E e;
+    e.discard(400);
+    assert(e() == 501);
+}
+
+void
+test3()
+{
+    typedef rand1<unsigned long long, 0, 0xFFFFFFFFFFFFFFFFull> E0;
+    typedef std::shuffle_order_engine<E0, 100> E;
+    E e;
+    e.discard(400);
+    assert(e() == 500);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/io.pass.cpp
new file mode 100644
index 0000000..9521bc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/io.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// template <class charT, class traits,
+//           class Engine, size_t k>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const shuffle_order_engine<Engine, k>& x);
+//
+// template <class charT, class traits,
+//           class Engine, size_t k>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            shuffle_order_engine<Engine, k>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::knuth_b E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/result_type.pass.cpp
new file mode 100644
index 0000000..bcb0855
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/result_type.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+// {
+// public:
+//     // types
+//     typedef typename Engine::result_type result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class UIntType, UIntType Min, UIntType Max>
+class rand1
+{
+public:
+    // types
+    typedef UIntType result_type;
+
+private:
+    result_type x_;
+
+    static_assert(Min < Max, "rand1 invalid parameters");
+public:
+
+#if TEST_STD_VER < 11 && defined(_LIBCPP_VERSION)
+    // Workaround for lack of constexpr in C++03
+    static const result_type _Min = Min;
+    static const result_type _Max = Max;
+#endif
+
+    static TEST_CONSTEXPR  result_type min() {return Min;}
+    static TEST_CONSTEXPR  result_type max() {return Max;}
+
+    explicit rand1(result_type sd = Min) : x_(sd)
+    {
+        if (x_ < Min)
+            x_ = Min;
+        if (x_ > Max)
+            x_ = Max;
+    }
+
+    result_type operator()()
+    {
+        result_type r = x_;
+        if (x_ < Max)
+            ++x_;
+        else
+            x_ = Min;
+        return r;
+    }
+};
+
+void
+test1()
+{
+    static_assert((std::is_same<
+        std::shuffle_order_engine<rand1<unsigned long, 0, 10>, 16>::result_type,
+        unsigned long>::value), "");
+}
+
+void
+test2()
+{
+    static_assert((std::is_same<
+        std::shuffle_order_engine<rand1<unsigned long long, 0, 10>, 16>::result_type,
+        unsigned long long>::value), "");
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_result_type.pass.cpp
new file mode 100644
index 0000000..f5ba1eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_result_type.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// void seed(result_type s = default_seed);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::knuth_b E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_sseq.pass.cpp
new file mode 100644
index 0000000..615f58b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_sseq.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::knuth_b e1;
+    std::knuth_b e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/values.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/values.pass.cpp
new file mode 100644
index 0000000..d98fdf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/values.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class Engine, size_t k>
+// class shuffle_order_engine
+// {
+// public:
+//     // types
+//     typedef typename Engine::result_type result_type;
+//
+//     // engine characteristics
+//     static constexpr size_t table_size = k;
+//     static constexpr result_type min() { return Engine::min; }
+//     static constexpr result_type max() { return Engine::max; }
+
+#include <random>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void where(const T &) {}
+
+void
+test1()
+{
+    typedef std::knuth_b E;
+    static_assert(E::table_size == 256, "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 1), "");
+    static_assert((E::max() == 2147483646), "");
+#else
+    assert((E::min() == 1));
+    assert((E::max() == 2147483646));
+#endif
+    where(E::table_size);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/ctor.pass.cpp
new file mode 100644
index 0000000..b92a583
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/ctor.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// See https://llvm.org/PR20183
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// The behavior of std::random_device changed on Apple platforms with
+// https://llvm.org/D116045.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// UNSUPPORTED: no-random-device
+
+// <random>
+
+// class random_device;
+
+// explicit random_device(const string& token = implementation-defined); // before C++20
+// random_device() : random_device(implementation-defined) {}            // C++20
+// explicit random_device(const string& token);                          // C++20
+
+// For the following ctors, the standard states: "The semantics and default
+// value of the token parameter are implementation-defined". Implementations
+// therefore aren't required to accept any string, but the default shouldn't
+// throw.
+
+#include <random>
+#include <system_error>
+#include <cassert>
+
+#if !defined(_WIN32)
+#include <unistd.h>
+#endif
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+#endif
+
+void check_random_device_valid(const std::string &token) {
+  std::random_device r(token);
+}
+
+void check_random_device_invalid(const std::string &token) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  try {
+    std::random_device r(token);
+    LIBCPP_ASSERT(false);
+  } catch (const std::system_error&) {
+  }
+#else
+  ((void)token);
+#endif
+}
+
+int main(int, char**) {
+  {
+    std::random_device r;
+  }
+  // Check the validity of various tokens
+  {
+#if defined(_LIBCPP_USING_ARC4_RANDOM)
+    check_random_device_valid("/dev/urandom");
+    check_random_device_valid("/dev/random");
+    check_random_device_valid("/dev/null");
+    check_random_device_valid("/dev/nonexistent");
+    check_random_device_valid("wrong file");
+#elif defined(_LIBCPP_USING_DEV_RANDOM)
+    check_random_device_valid("/dev/urandom");
+    check_random_device_valid("/dev/random");
+    check_random_device_valid("/dev/null");
+    check_random_device_invalid("/dev/nonexistent");
+    check_random_device_invalid("wrong file");
+#else
+    check_random_device_valid("/dev/urandom");
+    check_random_device_invalid("/dev/random");
+    check_random_device_invalid("/dev/null");
+    check_random_device_invalid("/dev/nonexistent");
+    check_random_device_invalid("wrong file");
+#endif
+  }
+
+#if !defined(_WIN32)
+// Test that random_device(const string&) properly handles getting
+// a file descriptor with the value '0'. Do this by closing the standard
+// streams so that the descriptor '0' is available.
+  {
+    int ec;
+    ec = close(STDIN_FILENO);
+    assert(!ec);
+    ec = close(STDOUT_FILENO);
+    assert(!ec);
+    ec = close(STDERR_FILENO);
+    assert(!ec);
+    std::random_device r;
+  }
+#endif // !defined(_WIN32)
+
+#if TEST_STD_VER >= 11
+  static_assert(test_convertible<std::random_device>(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/entropy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/entropy.pass.cpp
new file mode 100644
index 0000000..39fbfe8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/entropy.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-random-device
+
+// <random>
+
+// class random_device;
+
+// double entropy() const;
+
+#include <random>
+#include <cassert>
+#include <climits>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::random_device r;
+  double e = r.entropy();
+  assert(e >= 0);
+  assert(e <= sizeof(typename std::random_device::result_type) * CHAR_BIT);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/eval.pass.cpp
new file mode 100644
index 0000000..3339a54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.device/eval.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-random-device
+
+// <random>
+
+// class random_device;
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+#include <system_error>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::random_device r;
+        std::random_device::result_type e = r();
+        ((void)e); // Prevent unused warning
+    }
+
+    // When using the `/dev/urandom` implementation, make sure that we throw
+    // an exception when we hit EOF while reading the custom-provided file.
+#if !defined(TEST_HAS_NO_EXCEPTIONS) && defined(_LIBCPP_USING_DEV_RANDOM)
+    {
+        std::random_device r("/dev/null");
+        try {
+            (void)r();
+            LIBCPP_ASSERT(false);
+        } catch (const std::system_error&) {
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/assign.pass.cpp
new file mode 100644
index 0000000..1f037df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/assign.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// bernoulli_distribution& operator=(const bernoulli_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::bernoulli_distribution D;
+    D d1(0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/copy.pass.cpp
new file mode 100644
index 0000000..53bfdcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// bernoulli_distribution(const bernoulli_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::bernoulli_distribution D;
+    D d1(0.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/ctor_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/ctor_double.pass.cpp
new file mode 100644
index 0000000..b0e534e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/ctor_double.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// explicit bernoulli_distribution(double p = 0.5);          // before C++20
+// bernoulli_distribution() : bernoulli_distribution(0.5) {} // C++20
+// explicit bernoulli_distribution(double p);                // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        D d;
+        assert(d.p() == 0.5);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        D d(0);
+        assert(d.p() == 0);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        D d(0.75);
+        assert(d.p() == 0.75);
+    }
+
+#if TEST_STD_VER >= 11
+    {
+      typedef std::bernoulli_distribution D;
+      static_assert(test_convertible<D>(), "");
+      assert(D(0.5) == make_implicit<D>());
+      static_assert(!test_convertible<D, double>(), "");
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/ctor_param.pass.cpp
new file mode 100644
index 0000000..04ad19e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/ctor_param.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// explicit bernoulli_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eq.pass.cpp
new file mode 100644
index 0000000..6e32b7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eq.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// bool operator=(const bernoulli_distribution& x,
+//                const bernoulli_distribution& y);
+// bool operator!(const bernoulli_distribution& x,
+//                const bernoulli_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        D d1(.25);
+        D d2(.25);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        D d1(.28);
+        D d2(.25);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eval.pass.cpp
new file mode 100644
index 0000000..9a7af92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eval.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(.75);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.p();
+        double x_var = d.p()*(1-d.p());
+        double x_skew = (1 - 2 * d.p())/std::sqrt(x_var);
+        double x_kurtosis = (6 * sqr(d.p()) - 6 * d.p() + 1)/x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(.25);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.p();
+        double x_var = d.p()*(1-d.p());
+        double x_skew = (1 - 2 * d.p())/std::sqrt(x_var);
+        double x_kurtosis = (6 * sqr(d.p()) - 6 * d.p() + 1)/x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eval_param.pass.cpp
new file mode 100644
index 0000000..5584a9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/eval_param.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(.75);
+        P p(.25);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.p();
+        double x_var = p.p()*(1-p.p());
+        double x_skew = (1 - 2 * p.p())/std::sqrt(x_var);
+        double x_kurtosis = (6 * sqr(p.p()) - 6 * p.p() + 1)/x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(.25);
+        P p(.75);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.p();
+        double x_var = p.p()*(1-p.p());
+        double x_skew = (1 - 2 * p.p())/std::sqrt(x_var);
+        double x_kurtosis = (6 * sqr(p.p()) - 6 * p.p() + 1)/x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/get_param.pass.cpp
new file mode 100644
index 0000000..5f16633
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/get_param.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/io.pass.cpp
new file mode 100644
index 0000000..c3c0a08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/io.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// class bernoulli_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const bernoulli_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            bernoulli_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        D d1(.25);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/max.pass.cpp
new file mode 100644
index 0000000..206b516
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/max.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        D d(.25);
+        assert(d.max() == true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/min.pass.cpp
new file mode 100644
index 0000000..8f36bf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/min.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        D d(.5);
+        assert(d.min() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_assign.pass.cpp
new file mode 100644
index 0000000..3b86da1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_assign.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        param_type p0(.7);
+        param_type p;
+        p = p0;
+        assert(p.p() == .7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_copy.pass.cpp
new file mode 100644
index 0000000..61e9f87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_copy.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        param_type p0(.125);
+        param_type p = p0;
+        assert(p.p() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_ctor.pass.cpp
new file mode 100644
index 0000000..2666ee1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_ctor.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.p() == 0.5);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        param_type p(0.25);
+        assert(p.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_eq.pass.cpp
new file mode 100644
index 0000000..c01c332
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_eq.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_types.pass.cpp
new file mode 100644
index 0000000..b0dc65a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/param_types.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/set_param.pass.cpp
new file mode 100644
index 0000000..c53e0fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/set_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/types.pass.cpp
new file mode 100644
index 0000000..b1b0263
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bernoulli/types.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class bernoulli_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::bernoulli_distribution D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, bool>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/assign.pass.cpp
new file mode 100644
index 0000000..264f620
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// binomial_distribution& operator=(const binomial_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::binomial_distribution<> D;
+    D d1(2, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/copy.pass.cpp
new file mode 100644
index 0000000..9b4ded2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// binomial_distribution(const binomial_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::binomial_distribution<> D;
+    D d1(2, 0.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/ctor_int_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/ctor_int_double.pass.cpp
new file mode 100644
index 0000000..47e56b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/ctor_int_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// explicit binomial_distribution(IntType t = 1, double p = 0.5); // before C++20
+// binomial_distribution() : binomial_distribution(1) {}          // C++20
+// explicit binomial_distribution(IntType t, double p = 0.5);     // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::binomial_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, double>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        D d;
+        assert(d.t() == 1);
+        assert(d.p() == 0.5);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        D d(3);
+        assert(d.t() == 3);
+        assert(d.p() == 0.5);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        D d(3, 0.75);
+        assert(d.t() == 3);
+        assert(d.p() == 0.75);
+    }
+
+    test_implicit<int>();
+    test_implicit<long>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/ctor_param.pass.cpp
new file mode 100644
index 0000000..77954dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// explicit binomial_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type P;
+        P p(5, 0.25);
+        D d(p);
+        assert(d.t() == 5);
+        assert(d.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eq.pass.cpp
new file mode 100644
index 0000000..63281c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eq.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// bool operator=(const binomial_distribution& x,
+//                const binomial_distribution& y);
+// bool operator!(const binomial_distribution& x,
+//                const binomial_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        D d1(3, .25);
+        D d2(3, .25);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        D d1(3, .28);
+        D d2(3, .25);
+        assert(d1 != d2);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        D d1(3, .25);
+        D d2(4, .25);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval.PR44847.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval.PR44847.pass.cpp
new file mode 100644
index 0000000..9213d2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval.PR44847.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+// Test the fix for https://llvm.org/PR44847.
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+#include <sstream>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    typedef std::binomial_distribution<> D;
+    typedef std::mt19937 G;
+
+    G g;
+    D d(128738942, 1.6941441471907126e-08);
+
+    std::string state = " 1740222423 1665913615 1140355283 124152834 434145240"
+                        " 2553002688 4143320714 1810519474 447745536 1439409640 1596060396 1243637295"
+                        " 452117361 734967774 3276935081 35650473 682607275 4208082251 3209082916"
+                        " 638915489 4127185595 2859436515 309105096 837982734 796854873 4271538185"
+                        " 2447193692 607594006 4035165093 4230150671 2567368782 1000242037 2469514821"
+                        " 1843373462 1751084370 1033341643 3506396674 4169541123 1191187784 3479797390"
+                        " 3785371742 1475391851 878730063 2661164420 63166678 4127393159 2797714867"
+                        " 1295211604 2717051330 1009514623 1963164571 561646784 819612826 3340955171"
+                        " 1338523647 1675643732 458583760 698472119 3233594836 2901754568 4222994242"
+                        " 51167459 2501563254 2175997686 1673326467 3722097469 2183287831 2155925807"
+                        " 1071447253 1857934241 320830903 1514449149 103571877 839083116 3893321384"
+                        " 4236495022 766393502 2729490440 290181118 3191537542 1077578150 3066185245"
+                        " 3193085445 3786728494 2938418649 3410121447 1453867071 698346001 3037921161"
+                        " 839425565 2245305640 2806447261 3196149514 1071872132 2337761397 3632554165"
+                        " 190093341 4248613644 2372806256 3290113603 3852853233 272818390 3168842643"
+                        " 25788407 4197010683 3864965812 1635548247 2364439227 3344377087 4284620573"
+                        " 3351117493 3398532219 2757166123 1127999905 2988564217 3707129726 3652489018"
+                        " 4035370271 475801332 2109377392 2128345729 3920803035 4271338685 509459802"
+                        " 4158256844 1850467175 1579214935 8921175 4068350958 2951987840 506827330"
+                        " 3520651040 3359838267 1120109827 3917280670 2748947423 3672973280 1566164613"
+                        " 2986317531 1204099196 3080678121 3574913280 4009316336 3034181160 1818230129"
+                        " 3757769877 2464713972 2812294843 782960615 1228678223 2571358051 4260066020"
+                        " 2439643840 3500737183 1433940923 1031851687 190066625 3777385171 4142770213"
+                        " 3539275502 1622933657 425231043 3715607557 260333136 4198959706 358418"
+                        " 1799817566 2839827743 437785672 2967249029 949856347 2081447702 1102224171"
+                        " 479701434 1781895167 2965560025 264797633 2564778619 2515037023 1320978995"
+                        " 780140943 2372404879 3823445604 2917613108 143505740 3507288260 2803553229"
+                        " 4195962819 4072604717 3155823087 323755011 601944215 1840441037 2850820195"
+                        " 915623058 3306124208 3069788039 1553985704 411632899 3200645375 2973968812"
+                        " 4263574437 3360058162 144760024 845487010 3508028432 4091510967 3925394277"
+                        " 71566492 3432433113 3266920114 3539050491 51719451 1245373835 1469278112"
+                        " 3298302496 753088653 2942352102 1565378440 494477947 971879195 482756304"
+                        " 2475493857 143180757 324876427 1610205542 1829295320 1937949038 3733336232"
+                        " 2542145235 3636527510 2347609126 2343078538 2526896356 167862270 2299577281"
+                        " 3382958264 1911078293 531208917 3588214476 1086101513 1838672874 2119663667"
+                        " 491092052 2961424745 3048925589 486607333 3505822195 3888367 2949031946"
+                        " 2684841832 433147539 2333660325 3142554719 435207743 3063000516 4043979879"
+                        " 3290075088 1114755542 18368971 876637247 3352816011 1421909753 3339898083"
+                        " 740553432 3682683666 2699730850 2861403632 1971653904 900380480 2635160544"
+                        " 1318218867 411940 2141321523 2349820793 280562368 3816712514 3790707429"
+                        " 1619023591 2858103376 1462886666 1723686126 3766879240 1918781537 2792938366"
+                        " 166155425 803108075 722833545 220020495 880029214 2901984266 609985526"
+                        " 1367283597 132804580 903066665 131582208 64374393 2006102725 3422930158"
+                        " 4209296423 380263053 3978926691 3310851236 4245770487 4166043866 4080757525"
+                        " 3329599259 258706185 2452129516 3191265966 2958285912 1070664670 921876197"
+                        " 2421722823 2568477756 382467393 2196144533 213270233 116974426 2230947214"
+                        " 2576421741 393776471 2796472698 3647710433 3264988906 726903864 817800486"
+                        " 628224092 2707785007 3517963926 596980027 2466711387 3156540408 2517803670"
+                        " 3408123552 4142066739 3779818910 2988899011 2732117432 3579427018 1513070048"
+                        " 1566052861 20225341 997297613 3219855094 2777075639 1656025420 3670325076"
+                        " 1469330501 3061438653 4264717436 1305791144 1237197751 2943926634 1566843825"
+                        " 3359878993 4037226997 4044024653 3611863927 1375344610 211134383 2406252392"
+                        " 1349912770 1023874273 1912665158 1762983936 407124872 2936278199 1821966634"
+                        " 3337187112 2546090236 2594870585 823411965 126464686 4041388220 1686530706"
+                        " 2780657745 1945569350 203691199 2532411242 1830339266 674003798 2192329968"
+                        " 2425624005 2819484460 3743368462 2565769418 4179439526 216134386 2880090718"
+                        " 623297558 3913067470 745959159 2499436157 373025119 3423124368 2522302278"
+                        " 3719518513 999390119 159673547 228111094 3391079061 1761352720 2549048062"
+                        " 1125219697 2052834337 3743842626 2433549637 3636723358 1860785315 2387664013"
+                        " 581140755 11086848 4199179079 1180488689 2060816030 2550665319 1314472090"
+                        " 1402807876 304522082 3382175195 4260677857 1724818219 2183493354 1004322779"
+                        " 4166984056 889220724 553883566 582971548 2046113107 2080208105 3473121134"
+                        " 1959681858 1840897428 2595714120 855065022 4191762128 3679914005 3623561445"
+                        " 3437337182 3269107597 2019021510 2112281155 985458687 1364815423 514093990"
+                        " 3711847302 704129707 3398127374 517373404 2646977457 3048605419 1372350917"
+                        " 3831335422 2263542968 2283942504 2193996512 824623017 1707815852 3337156739"
+                        " 2301398895 2077322758 193542893 869960695 3878520140 403616946 3228943765"
+                        " 1037753596 2949947821 379992823 2251850209 1614533146 1704886337 108361232"
+                        " 3840616436 2932809257 2375700648 596391307 4226846855 191943050 1271990524"
+                        " 1335422537 3085696177 2030313449 3272604577 1148556450 1184357181 3558074012"
+                        " 3259720214 2755915415 2720703536 31861322 1740307221 1860884298 3922103763"
+                        " 4066872392 1756734488 394294796 2505236387 2456914682 639788702 52063410"
+                        " 2855173018 3307964490 556762160 3624145788 3793504468 4252003358 3690335184"
+                        " 688245281 2259823605 2617950220 1045718164 3091539813 1330130477 736722350"
+                        " 3100437052 3900855736 4183439368 1735720081 2644768495 819274730 2364834023"
+                        " 1393374098 981219339 3969251105 332522940 850159909 646738867 3413137687"
+                        " 1646732884 80027487 2196948979 5295580 3530173036 767814907 2573204209"
+                        " 491686200 1287955820 3095830596 2152743903 1738320986 1900678059 3613699900"
+                        " 3076191184 2917243255 2236492002 3504114019 604643631 3324769580 4078090927"
+                        " 1245379462 2026215662 1566278916 2832509655 3010562339 1269806412 835199342"
+                        " 2561789927 163108895 524878390 833167775 3551760739 3008059185 1133970834"
+                        " 26821616 2846321927 3803209991 581001826 3764614926 3893778555 617853085"
+                        " 183809431 3510530944 350044681 429839558 1238110552 265276207 205294443"
+                        " 3092821176 2003027316 2577165836 1277274629 87531073 63821123 354781812"
+                        " 3700767000 3451421881 990626144 3763226681 3373715717 2360928651 2412110189"
+                        " 3362121672 3080578947 1604861935 3186376735 2989392261 3550022914 756392571"
+                        " 1580512570 2584626785 2727753459 730699388 3379402897 3050444856 2244390108"
+                        " 3941150486 1990708800 2462735 195459645 761670582 1067695927 984662039"
+                        " 2678082647 1839150009 2113552968 406021267 2193154754 720977131 2445722325"
+                        " 2482507181 2062595810 1015226482";
+
+    std::istringstream iss(state);
+    iss >> g;
+
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = dbl * dbl;
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval.pass.cpp
new file mode 100644
index 0000000..2e8bfae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval.pass.cpp
@@ -0,0 +1,539 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+T sqr(T x) {
+    return x * x;
+}
+
+template <class T>
+void test1() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937_64 G;
+    G g;
+    D d(5, .75);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+}
+
+template <class T>
+void test2() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(30, .03125);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+template <class T>
+void test3() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(40, .25);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.03);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.3);
+}
+
+template <class T>
+void test4() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(40, 0);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    // In this case:
+    //   skew     computes to 0./0. == nan
+    //   kurtosis computes to 0./0. == nan
+    //   x_skew     == inf
+    //   x_kurtosis == inf
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(mean == x_mean);
+    assert(var == x_var);
+    // assert(skew == x_skew);
+    (void)skew; (void)x_skew;
+    // assert(kurtosis == x_kurtosis);
+    (void)kurtosis; (void)x_kurtosis;
+}
+
+template <class T>
+void test5() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(40, 1);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    // In this case:
+    //   skew     computes to 0./0. == nan
+    //   kurtosis computes to 0./0. == nan
+    //   x_skew     == -inf
+    //   x_kurtosis == inf
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(mean == x_mean);
+    assert(var == x_var);
+    // assert(skew == x_skew);
+    (void)skew; (void)x_skew;
+    // assert(kurtosis == x_kurtosis);
+    (void)kurtosis; (void)x_kurtosis;
+}
+
+template <class T>
+void test6() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(127, 0.5);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs(skew - x_skew) < 0.02);
+    assert(std::abs(kurtosis - x_kurtosis) < 0.01);
+}
+
+template <class T>
+void test7() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(1, 0.5);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs(skew - x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+template <class T>
+void test8() {
+    const int N = 100000;
+    std::mt19937 gen1;
+    std::mt19937 gen2;
+
+    using UnsignedT = typename std::make_unsigned<T>::type;
+    std::binomial_distribution<T>         dist1(5, 0.1);
+    std::binomial_distribution<UnsignedT> dist2(5, 0.1);
+
+    for (int i = 0; i < N; ++i) {
+        T r1 = dist1(gen1);
+        UnsignedT r2 = dist2(gen2);
+        assert(r1 >= 0);
+        assert(static_cast<UnsignedT>(r1) == r2);
+    }
+}
+
+template <class T>
+void test9() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0, 0.005);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    // In this case:
+    //   skew     computes to 0./0. == nan
+    //   kurtosis computes to 0./0. == nan
+    //   x_skew     == inf
+    //   x_kurtosis == inf
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(mean == x_mean);
+    assert(var == x_var);
+    // assert(skew == x_skew);
+    (void)skew; (void)x_skew;
+    // assert(kurtosis == x_kurtosis);
+    (void)kurtosis; (void)x_kurtosis;
+}
+
+template <class T>
+void test10() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0, 0);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    // In this case:
+    //   skew     computes to 0./0. == nan
+    //   kurtosis computes to 0./0. == nan
+    //   x_skew     == inf
+    //   x_kurtosis == inf
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(mean == x_mean);
+    assert(var == x_var);
+    // assert(skew == x_skew);
+    (void)skew; (void)x_skew;
+    // assert(kurtosis == x_kurtosis);
+    (void)kurtosis; (void)x_kurtosis;
+}
+
+template <class T>
+void test11() {
+    typedef std::binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0, 1);
+    const int N = 100000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    // In this case:
+    //   skew     computes to 0./0. == nan
+    //   kurtosis computes to 0./0. == nan
+    //   x_skew     == -inf
+    //   x_kurtosis == inf
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.t() * d.p();
+    double x_var = x_mean*(1-d.p());
+    double x_skew = (1-2*d.p()) / std::sqrt(x_var);
+    double x_kurtosis = (1-6*d.p()*(1-d.p())) / x_var;
+    assert(mean == x_mean);
+    assert(var == x_var);
+    // assert(skew == x_skew);
+    (void)skew; (void)x_skew;
+    // assert(kurtosis == x_kurtosis);
+    (void)kurtosis; (void)x_kurtosis;
+}
+
+template <class T>
+void tests() {
+    test1<T>();
+    test2<T>();
+    test3<T>();
+    test4<T>();
+    test5<T>();
+    test6<T>();
+    test7<T>();
+    test8<T>();
+    test9<T>();
+    test10<T>();
+    test11<T>();
+}
+
+int main(int, char**) {
+    tests<short>();
+    tests<int>();
+    tests<long>();
+    tests<long long>();
+
+    tests<unsigned short>();
+    tests<unsigned int>();
+    tests<unsigned long>();
+    tests<unsigned long long>();
+
+#if defined(_LIBCPP_VERSION) // extension
+    tests<int8_t>();
+    tests<uint8_t>();
+#if !defined(TEST_HAS_NO_INT128)
+    tests<__int128_t>();
+    tests<__uint128_t>();
+#endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval_param.pass.cpp
new file mode 100644
index 0000000..78d6aed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/eval_param.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937_64 G;
+        G g;
+        D d(16, .75);
+        P p(5, .75);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(0 <= v && v <= p.t());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.t() * p.p();
+        double x_var = x_mean*(1-p.p());
+        double x_skew = (1-2*p.p()) / std::sqrt(x_var);
+        double x_kurtosis = (1-6*p.p()*(1-p.p())) / x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(16, .75);
+        P p(30, .03125);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(0 <= v && v <= p.t());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.t() * p.p();
+        double x_var = x_mean*(1-p.p());
+        double x_skew = (1-2*p.p()) / std::sqrt(x_var);
+        double x_kurtosis = (1-6*p.p()*(1-p.p())) / x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(16, .75);
+        P p(40, .25);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(0 <= v && v <= p.t());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.t() * p.p();
+        double x_var = x_mean*(1-p.p());
+        double x_skew = (1-2*p.p()) / std::sqrt(x_var);
+        double x_kurtosis = (1-6*p.p()*(1-p.p())) / x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.04);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/get_param.pass.cpp
new file mode 100644
index 0000000..49c4946
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type P;
+        P p(5, .125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/io.pass.cpp
new file mode 100644
index 0000000..35f5799
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const binomial_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            binomial_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        D d1(7, .25);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/max.pass.cpp
new file mode 100644
index 0000000..ab6ae0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/max.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        D d(4, .25);
+        assert(d.max() == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/min.pass.cpp
new file mode 100644
index 0000000..22f2f19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        D d(4, .5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_assign.pass.cpp
new file mode 100644
index 0000000..afbe882
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(6, .7);
+        param_type p;
+        p = p0;
+        assert(p.t() == 6);
+        assert(p.p() == .7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_copy.pass.cpp
new file mode 100644
index 0000000..403a010
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.t() == 10);
+        assert(p.p() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_ctor.pass.cpp
new file mode 100644
index 0000000..96f5a13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.t() == 1);
+        assert(p.p() == 0.5);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.t() == 10);
+        assert(p.p() == 0.5);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 0.25);
+        assert(p.t() == 10);
+        assert(p.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_eq.pass.cpp
new file mode 100644
index 0000000..e620662
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(3, 0.75);
+        param_type p2(3, 0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(3, 0.75);
+        param_type p2(3, 0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_types.pass.cpp
new file mode 100644
index 0000000..8443350
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/set_param.pass.cpp
new file mode 100644
index 0000000..4b9231e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::param_type P;
+        P p(10, 0.25);
+        D d(8, 0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/types.pass.cpp
new file mode 100644
index 0000000..22e8978
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.bin/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class binomial_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::binomial_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, int>::value), "");
+    }
+    {
+        typedef std::binomial_distribution<long> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, long>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/assign.pass.cpp
new file mode 100644
index 0000000..7b1273b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// geometric_distribution& operator=(const geometric_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::geometric_distribution<> D;
+    D d1(0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/copy.pass.cpp
new file mode 100644
index 0000000..1d069c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// geometric_distribution(const geometric_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::geometric_distribution<> D;
+    D d1(0.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/ctor_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/ctor_double.pass.cpp
new file mode 100644
index 0000000..49d47df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/ctor_double.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// explicit geometric_distribution(double p = 0.5);          // before C++20
+// geometric_distribution() : geometric_distribution(0.5) {} // C++20
+// explicit geometric_distribution(double p);                // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::geometric_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0.5) == make_implicit<D>());
+  static_assert(!test_convertible<D, double>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        D d;
+        assert(d.p() == 0.5);
+    }
+    {
+        typedef std::geometric_distribution<> D;
+        D d(0.75);
+        assert(d.p() == 0.75);
+    }
+
+    test_implicit<int>();
+    test_implicit<long>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/ctor_param.pass.cpp
new file mode 100644
index 0000000..009c3f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/ctor_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// explicit geometric_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eq.pass.cpp
new file mode 100644
index 0000000..0d391d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// bool operator=(const geometric_distribution& x,
+//                const geometric_distribution& y);
+// bool operator!(const geometric_distribution& x,
+//                const geometric_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        D d1(.25);
+        D d2(.25);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::geometric_distribution<> D;
+        D d1(.28);
+        D d2(.25);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eval.pass.cpp
new file mode 100644
index 0000000..deccad1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eval.pass.cpp
@@ -0,0 +1,326 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+T sqr(T x) {
+    return x * x;
+}
+
+void test_small_inputs() {
+  std::mt19937 engine;
+  std::geometric_distribution<std::int16_t> distribution(5.45361e-311);
+  typedef std::geometric_distribution<std::int16_t>::result_type result_type;
+  for (int i = 0; i < 1000; ++i) {
+    volatile result_type res = distribution(engine);
+    ((void)res);
+  }
+}
+
+template <class T>
+void test1() {
+    typedef std::geometric_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(.03125);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt((1 - d.p()));
+    double x_kurtosis = 6 + sqr(d.p()) / (1 - d.p());
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+template <class T>
+void test2() {
+    typedef std::geometric_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0.05);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt((1 - d.p()));
+    double x_kurtosis = 6 + sqr(d.p()) / (1 - d.p());
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+}
+
+template <class T>
+void test3() {
+    typedef std::geometric_distribution<T> D;
+    typedef std::minstd_rand G;
+    G g;
+    D d(.25);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt((1 - d.p()));
+    double x_kurtosis = 6 + sqr(d.p()) / (1 - d.p());
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+}
+
+template <class T>
+void test4() {
+    typedef std::geometric_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0.5);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt((1 - d.p()));
+    double x_kurtosis = 6 + sqr(d.p()) / (1 - d.p());
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+}
+
+template <class T>
+void test5() {
+    typedef std::geometric_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0.75);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt((1 - d.p()));
+    double x_kurtosis = 6 + sqr(d.p()) / (1 - d.p());
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+}
+
+template <class T>
+void test6() {
+    typedef std::geometric_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0.96875);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt((1 - d.p()));
+    double x_kurtosis = 6 + sqr(d.p()) / (1 - d.p());
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+}
+
+template <class T>
+void tests() {
+    test1<T>();
+    test2<T>();
+    test3<T>();
+    test4<T>();
+    test5<T>();
+    test6<T>();
+}
+
+int main(int, char**) {
+    test_small_inputs();
+
+    tests<short>();
+    tests<int>();
+    tests<long>();
+    tests<long long>();
+
+    tests<unsigned short>();
+    tests<unsigned int>();
+    tests<unsigned long>();
+    tests<unsigned long long>();
+
+#if defined(_LIBCPP_VERSION) // extension
+    // TODO: std::geometric_distribution currently doesn't work reliably with small types.
+    // tests<int8_t>();
+    // tests<uint8_t>();
+#if !defined(TEST_HAS_NO_INT128)
+    tests<__int128_t>();
+    tests<__uint128_t>();
+#endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eval_param.pass.cpp
new file mode 100644
index 0000000..16cb7fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/eval_param.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(.75);
+        P p(.03125);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = (1 - p.p()) / p.p();
+        double x_var = x_mean / p.p();
+        double x_skew = (2 - p.p()) / std::sqrt((1 - p.p()));
+        double x_kurtosis = 6 + sqr(p.p()) / (1 - p.p());
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(.75);
+        P p(.25);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = (1 - p.p()) / p.p();
+        double x_var = x_mean / p.p();
+        double x_skew = (2 - p.p()) / std::sqrt((1 - p.p()));
+        double x_kurtosis = 6 + sqr(p.p()) / (1 - p.p());
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(.5);
+        P p(.75);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = (1 - p.p()) / p.p();
+        double x_var = x_mean / p.p();
+        double x_skew = (2 - p.p()) / std::sqrt((1 - p.p()));
+        double x_kurtosis = 6 + sqr(p.p()) / (1 - p.p());
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/get_param.pass.cpp
new file mode 100644
index 0000000..5c2489c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/io.pass.cpp
new file mode 100644
index 0000000..394f6aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const geometric_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            geometric_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        D d1(.25);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/max.pass.cpp
new file mode 100644
index 0000000..8f7bb08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/max.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        D d(.25);
+        assert(d.max() == std::numeric_limits<int>::max());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/min.pass.cpp
new file mode 100644
index 0000000..17d3837
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        D d(.5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_assign.pass.cpp
new file mode 100644
index 0000000..6f44e1d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.7);
+        param_type p;
+        p = p0;
+        assert(p.p() == .7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_copy.pass.cpp
new file mode 100644
index 0000000..34ceca3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_copy.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.125);
+        param_type p = p0;
+        assert(p.p() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_ctor.pass.cpp
new file mode 100644
index 0000000..d56da92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_ctor.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.p() == 0.5);
+    }
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(0.25);
+        assert(p.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_eq.pass.cpp
new file mode 100644
index 0000000..23a2dfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_types.pass.cpp
new file mode 100644
index 0000000..34f1d66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/set_param.pass.cpp
new file mode 100644
index 0000000..99bc433
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/types.pass.cpp
new file mode 100644
index 0000000..17674b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.geo/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class geometric_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::geometric_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, int>::value), "");
+    }
+    {
+        typedef std::geometric_distribution<long> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, long>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/assign.pass.cpp
new file mode 100644
index 0000000..ed343eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// negative_binomial_distribution& operator=(const negative_binomial_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::negative_binomial_distribution<> D;
+    D d1(2, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/copy.pass.cpp
new file mode 100644
index 0000000..ba525c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// negative_binomial_distribution(const negative_binomial_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::negative_binomial_distribution<> D;
+    D d1(2, 0.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/ctor_int_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/ctor_int_double.pass.cpp
new file mode 100644
index 0000000..cf49d09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/ctor_int_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// explicit negative_binomial_distribution(IntType k = 1, double p = 0.5); // before C++20
+// negative_binomial_distribution() : negative_binomial_distribution(1) {} // C++20
+// explicit negative_binomial_distribution(IntType k, double p = 0.5);     // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::negative_binomial_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, double>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d;
+        assert(d.k() == 1);
+        assert(d.p() == 0.5);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d(3);
+        assert(d.k() == 3);
+        assert(d.p() == 0.5);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d(3, 0.75);
+        assert(d.k() == 3);
+        assert(d.p() == 0.75);
+    }
+
+    test_implicit<int>();
+    test_implicit<long>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/ctor_param.pass.cpp
new file mode 100644
index 0000000..8f71af9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// explicit negative_binomial_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type P;
+        P p(5, 0.25);
+        D d(p);
+        assert(d.k() == 5);
+        assert(d.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eq.pass.cpp
new file mode 100644
index 0000000..7424bf2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eq.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// bool operator=(const negative_binomial_distribution& x,
+//                const negative_binomial_distribution& y);
+// bool operator!(const negative_binomial_distribution& x,
+//                const negative_binomial_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d1(3, .25);
+        D d2(3, .25);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d1(3, .28);
+        D d2(3, .25);
+        assert(d1 != d2);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d1(3, .25);
+        D d2(4, .25);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eval.pass.cpp
new file mode 100644
index 0000000..d98a73d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eval.pass.cpp
@@ -0,0 +1,316 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+T sqr(T x) {
+    return x * x;
+}
+
+template <class T>
+void test1() {
+    typedef std::negative_binomial_distribution<T> D;
+    typedef std::minstd_rand G;
+    G g;
+    D d(5, .25);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.k() * (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt(d.k() * (1 - d.p()));
+    double x_kurtosis = 6. / d.k() + sqr(d.p()) / (d.k() * (1 - d.p()));
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+}
+
+template <class T>
+void test2() {
+    typedef std::negative_binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(30, .03125);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.k() * (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt(d.k() * (1 - d.p()));
+    double x_kurtosis = 6. / d.k() + sqr(d.p()) / (d.k() * (1 - d.p()));
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+template <class T>
+void test3() {
+    typedef std::negative_binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(40, .25);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.k() * (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt(d.k() * (1 - d.p()));
+    double x_kurtosis = 6. / d.k() + sqr(d.p()) / (d.k() * (1 - d.p()));
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+}
+
+template <class T>
+void test4() {
+    typedef std::negative_binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(40, 1);
+    const int N = 1000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.k() * (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt(d.k() * (1 - d.p()));
+    double x_kurtosis = 6. / d.k() + sqr(d.p()) / (d.k() * (1 - d.p()));
+    assert(mean == x_mean);
+    assert(var == x_var);
+    // assert(skew == x_skew);
+    (void)skew; (void)x_skew;
+    // assert(kurtosis == x_kurtosis);
+    (void)kurtosis; (void)x_kurtosis;
+}
+
+template <class T>
+void test5() {
+    typedef std::negative_binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(127, 0.5);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.k() * (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt(d.k() * (1 - d.p()));
+    double x_kurtosis = 6. / d.k() + sqr(d.p()) / (d.k() * (1 - d.p()));
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.04);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.05);
+}
+
+template <class T>
+void test6() {
+    typedef std::negative_binomial_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(1, 0.05);
+    const int N = 1000000;
+    std::vector<typename D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        typename D::result_type v = d(g);
+        assert(d.min() <= v && v <= d.max());
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(),
+                                          double(0)) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.k() * (1 - d.p()) / d.p();
+    double x_var = x_mean / d.p();
+    double x_skew = (2 - d.p()) / std::sqrt(d.k() * (1 - d.p()));
+    double x_kurtosis = 6. / d.k() + sqr(d.p()) / (d.k() * (1 - d.p()));
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+}
+
+template <class T>
+void tests() {
+    test1<T>();
+    test2<T>();
+    test3<T>();
+    test4<T>();
+    test5<T>();
+    test6<T>();
+}
+
+int main(int, char**) {
+    tests<short>();
+    tests<int>();
+    tests<long>();
+    tests<long long>();
+
+    tests<unsigned short>();
+    tests<unsigned int>();
+    tests<unsigned long>();
+    tests<unsigned long long>();
+
+#if defined(_LIBCPP_VERSION) // extension
+    // TODO: std::negative_binomial_distribution currently doesn't work reliably with small types.
+    // tests<int8_t>();
+    // tests<uint8_t>();
+#if !defined(TEST_HAS_NO_INT128)
+    tests<__int128_t>();
+    tests<__uint128_t>();
+#endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eval_param.pass.cpp
new file mode 100644
index 0000000..0b03982
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/eval_param.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <numeric>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(16, .75);
+        P p(5, .75);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.k() * (1 - p.p()) / p.p();
+        double x_var = x_mean / p.p();
+        double x_skew = (2 - p.p()) / std::sqrt(p.k() * (1 - p.p()));
+        double x_kurtosis = 6. / p.k() + sqr(p.p()) / (p.k() * (1 - p.p()));
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(16, .75);
+        P p(30, .03125);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.k() * (1 - p.p()) / p.p();
+        double x_var = x_mean / p.p();
+        double x_skew = (2 - p.p()) / std::sqrt(p.k() * (1 - p.p()));
+        double x_kurtosis = 6. / p.k() + sqr(p.p()) / (p.k() * (1 - p.p()));
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(16, .75);
+        P p(40, .25);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.k() * (1 - p.p()) / p.p();
+        double x_var = x_mean / p.p();
+        double x_skew = (2 - p.p()) / std::sqrt(p.k() * (1 - p.p()));
+        double x_kurtosis = 6. / p.k() + sqr(p.p()) / (p.k() * (1 - p.p()));
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/get_param.pass.cpp
new file mode 100644
index 0000000..b15d8f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type P;
+        P p(5, .125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/io.pass.cpp
new file mode 100644
index 0000000..63c4b0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const negative_binomial_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            negative_binomial_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d1(7, .25);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/max.pass.cpp
new file mode 100644
index 0000000..a97f9b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/max.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d(4, .25);
+        assert(d.max() == std::numeric_limits<int>::max());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/min.pass.cpp
new file mode 100644
index 0000000..cb7a6dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        D d(4, .5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_assign.pass.cpp
new file mode 100644
index 0000000..12b826b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(6, .7);
+        param_type p;
+        p = p0;
+        assert(p.k() == 6);
+        assert(p.p() == .7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_copy.pass.cpp
new file mode 100644
index 0000000..4d03324
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.k() == 10);
+        assert(p.p() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_ctor.pass.cpp
new file mode 100644
index 0000000..930711a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.k() == 1);
+        assert(p.p() == 0.5);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.k() == 10);
+        assert(p.p() == 0.5);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 0.25);
+        assert(p.k() == 10);
+        assert(p.p() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_eq.pass.cpp
new file mode 100644
index 0000000..30c195c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(3, 0.75);
+        param_type p2(3, 0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(3, 0.75);
+        param_type p2(3, 0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_types.pass.cpp
new file mode 100644
index 0000000..06d4158
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/set_param.pass.cpp
new file mode 100644
index 0000000..6d894d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::param_type P;
+        P p(10, 0.25);
+        D d(8, 0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/types.pass.cpp
new file mode 100644
index 0000000..142c82c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.bern/rand.dist.bern.negbin/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class negative_binomial_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::negative_binomial_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, int>::value), "");
+    }
+    {
+        typedef std::negative_binomial_distribution<long> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, long>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/assign.pass.cpp
new file mode 100644
index 0000000..353eec4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// cauchy_distribution& operator=(const cauchy_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::cauchy_distribution<> D;
+    D d1(.5, 2);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/copy.pass.cpp
new file mode 100644
index 0000000..fdc7ac9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// cauchy_distribution(const cauchy_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::cauchy_distribution<> D;
+    D d1(.5, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..96e4e1d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// explicit cauchy_distribution(RealType a = 0.0, RealType b = 1.0); // before C++20
+// cauchy_distribution() : cauchy_distribution(0.0) {}               // C++20
+// explicit cauchy_distribution(RealType a, RealType b = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::cauchy_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        D d;
+        assert(d.a() == 0);
+        assert(d.b() == 1);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        D d(14.5);
+        assert(d.a() == 14.5);
+        assert(d.b() == 1);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.a() == 14.5);
+        assert(d.b() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/ctor_param.pass.cpp
new file mode 100644
index 0000000..665d121
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// explicit cauchy_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.a() == 0.25);
+        assert(d.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eq.pass.cpp
new file mode 100644
index 0000000..2442d97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// bool operator=(const cauchy_distribution& x,
+//                const cauchy_distribution& y);
+// bool operator!(const cauchy_distribution& x,
+//                const cauchy_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eval.pass.cpp
new file mode 100644
index 0000000..abc0cc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eval.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+#include <vector>
+#include <algorithm>
+
+#include "test_macros.h"
+
+double
+f(double x, double a, double b)
+{
+    return 1/3.1415926535897932 * std::atan((x - a)/b) + .5;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        const double a = 10;
+        const double b = .5;
+        D d(a, b);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], a, b) - double(i)/N) < .001);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        const double a = -1.5;
+        const double b = 1;
+        D d(a, b);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], a, b) - double(i)/N) < .001);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        const double a = .5;
+        const double b = 2;
+        D d(a, b);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], a, b) - double(i)/N) < .001);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eval_param.pass.cpp
new file mode 100644
index 0000000..cf245c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/eval_param.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+#include <vector>
+#include <algorithm>
+
+#include "test_macros.h"
+
+double
+f(double x, double a, double b)
+{
+    return 1/3.1415926535897932 * std::atan((x - a)/b) + .5;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        const double a = 10;
+        const double b = .5;
+        D d;
+        P p(a, b);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], a, b) - double(i)/N) < .001);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        const double a = -1.5;
+        const double b = 1;
+        D d;
+        P p(a, b);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], a, b) - double(i)/N) < .001);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        const double a = .5;
+        const double b = 2;
+        D d;
+        P p(a, b);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], a, b) - double(i)/N) < .001);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/get_param.pass.cpp
new file mode 100644
index 0000000..c9db2fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/io.pass.cpp
new file mode 100644
index 0000000..0793473
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const cauchy_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            cauchy_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        D d1(7.5, 5.5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/max.pass.cpp
new file mode 100644
index 0000000..fa4e63e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/min.pass.cpp
new file mode 100644
index 0000000..a50eb94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/min.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+
+// result_type min() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == -INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_assign.pass.cpp
new file mode 100644
index 0000000..c9ee389
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.a() == .75);
+        assert(p.b() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_copy.pass.cpp
new file mode 100644
index 0000000..deb40dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.a() == 10);
+        assert(p.b() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_ctor.pass.cpp
new file mode 100644
index 0000000..bb6a1ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.a() == 0);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.a() == 10);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.a() == 10);
+        assert(p.b() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_eq.pass.cpp
new file mode 100644
index 0000000..caa1cb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_types.pass.cpp
new file mode 100644
index 0000000..b76bda5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/set_param.pass.cpp
new file mode 100644
index 0000000..4756e66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/types.pass.cpp
new file mode 100644
index 0000000..1dbf2dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.cauchy/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class cauchy_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::cauchy_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::cauchy_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/assign.pass.cpp
new file mode 100644
index 0000000..3bf99a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// chi_squared_distribution& operator=(const chi_squared_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::chi_squared_distribution<> D;
+    D d1(20.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/copy.pass.cpp
new file mode 100644
index 0000000..d01fb91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// chi_squared_distribution(const chi_squared_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::chi_squared_distribution<> D;
+    D d1(21.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/ctor_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/ctor_double.pass.cpp
new file mode 100644
index 0000000..ec22816
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/ctor_double.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// explicit chi_squared_distribution(RealType n = 1.0);          // before C++20
+// chi_squared_distribution() : chi_squared_distribution(1.0) {} // C++20
+// explicit chi_squared_distribution(RealType n);                // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::chi_squared_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d;
+        assert(d.n() == 1);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d(14.5);
+        assert(d.n() == 14.5);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/ctor_param.pass.cpp
new file mode 100644
index 0000000..cb6d02e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/ctor_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// explicit chi_squared_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.n() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eq.pass.cpp
new file mode 100644
index 0000000..867ec5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// bool operator=(const chi_squared_distribution& x,
+//                const chi_squared_distribution& y);
+// bool operator!(const chi_squared_distribution& x,
+//                const chi_squared_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d1(2.5);
+        D d2(2.5);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d1(4);
+        D d2(4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eval.pass.cpp
new file mode 100644
index 0000000..2a8dfd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eval.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(0.5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.n();
+        double x_var = 2 * d.n();
+        double x_skew = std::sqrt(8 / d.n());
+        double x_kurtosis = 12 / d.n();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(1);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.n();
+        double x_var = 2 * d.n();
+        double x_skew = std::sqrt(8 / d.n());
+        double x_kurtosis = 12 / d.n();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.n();
+        double x_var = 2 * d.n();
+        double x_skew = std::sqrt(8 / d.n());
+        double x_kurtosis = 12 / d.n();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eval_param.pass.cpp
new file mode 100644
index 0000000..5286473
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/eval_param.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(0.5);
+        P p(1);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.n();
+        double x_var = 2 * p.n();
+        double x_skew = std::sqrt(8 / p.n());
+        double x_kurtosis = 12 / p.n();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(1);
+        P p(2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.n();
+        double x_var = 2 * p.n();
+        double x_skew = std::sqrt(8 / p.n());
+        double x_kurtosis = 12 / p.n();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(2);
+        P p(.5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.n();
+        double x_var = 2 * p.n();
+        double x_skew = std::sqrt(8 / p.n());
+        double x_kurtosis = 12 / p.n();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/get_param.pass.cpp
new file mode 100644
index 0000000..4285cae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/io.pass.cpp
new file mode 100644
index 0000000..0294ff5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const chi_squared_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            chi_squared_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d1(7);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/max.pass.cpp
new file mode 100644
index 0000000..a0c61d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d(5);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/min.pass.cpp
new file mode 100644
index 0000000..65db7cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        D d(.5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_assign.pass.cpp
new file mode 100644
index 0000000..ed32f0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75);
+        param_type p;
+        p = p0;
+        assert(p.n() == .75);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_copy.pass.cpp
new file mode 100644
index 0000000..4041948
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_copy.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10);
+        param_type p = p0;
+        assert(p.n() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_ctor.pass.cpp
new file mode 100644
index 0000000..fcef96f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_ctor.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.n() == 1);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.n() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_eq.pass.cpp
new file mode 100644
index 0000000..815c6cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_types.pass.cpp
new file mode 100644
index 0000000..3e5512f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/set_param.pass.cpp
new file mode 100644
index 0000000..5a961ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/types.pass.cpp
new file mode 100644
index 0000000..a6b914b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.chisq/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class chi_squared_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::chi_squared_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::chi_squared_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/assign.pass.cpp
new file mode 100644
index 0000000..f4c9fb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// fisher_f_distribution& operator=(const fisher_f_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::fisher_f_distribution<> D;
+    D d1(20, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/copy.pass.cpp
new file mode 100644
index 0000000..4f8726c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// fisher_f_distribution(const fisher_f_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::fisher_f_distribution<> D;
+    D d1(20, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..8380dfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// explicit fisher_f_distribution(RealType m = 1.0, RealType n = 1.0); // before C++20
+// fisher_f_distribution() : fisher_f_distribution(1.0) {}             // C++20
+// explicit fisher_f_distribution(RealType m, RealType n = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::fisher_f_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d;
+        assert(d.m() == 1);
+        assert(d.n() == 1);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d(14.5);
+        assert(d.m() == 14.5);
+        assert(d.n() == 1);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.m() == 14.5);
+        assert(d.n() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/ctor_param.pass.cpp
new file mode 100644
index 0000000..f742193
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// explicit fisher_f_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.m() == 0.25);
+        assert(d.n() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eq.pass.cpp
new file mode 100644
index 0000000..ed8f218
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// bool operator=(const fisher_f_distribution& x,
+//                const fisher_f_distribution& y);
+// bool operator!(const fisher_f_distribution& x,
+//                const fisher_f_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eval.pass.cpp
new file mode 100644
index 0000000..dfb636c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eval.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <algorithm>
+#include <cmath>
+
+#include "test_macros.h"
+
+double fac(double x)
+{
+    double r = 1;
+    for (; x > 1; --x)
+        r *= x;
+    return r;
+}
+
+double
+I(double x, unsigned a, unsigned b)
+{
+    double r = 0;
+    for (int j = a; static_cast<unsigned>(j) <= a+b-1; ++j)
+        r += fac(a+b-1)/(fac(j) * fac(a + b - 1 - j)) * std::pow(x, j) *
+             std::pow(1-x, a+b-1-j);
+    return r;
+}
+
+double
+f(double x, double m, double n)
+{
+    return I(m * x / (m*x + n), static_cast<unsigned>(m/2), static_cast<unsigned>(n/2));
+}
+
+int main(int, char**)
+{
+    // Purposefully only testing even integral values of m and n (for now)
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(2, 4);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(v >= 0);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], d.m(), d.n()) - double(i)/N) < .01);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(4, 2);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(v >= 0);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], d.m(), d.n()) - double(i)/N) < .01);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(18, 20);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(v >= 0);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], d.m(), d.n()) - double(i)/N) < .01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eval_param.pass.cpp
new file mode 100644
index 0000000..39628b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/eval_param.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <algorithm>
+#include <cmath>
+
+#include "test_macros.h"
+
+double fac(double x)
+{
+    double r = 1;
+    for (; x > 1; --x)
+        r *= x;
+    return r;
+}
+
+double
+I(double x, unsigned a, unsigned b)
+{
+    double r = 0;
+    for (int j = a; static_cast<unsigned>(j) <= a+b-1; ++j)
+        r += fac(a+b-1)/(fac(j) * fac(a + b - 1 - j)) * std::pow(x, j) *
+             std::pow(1-x, a+b-1-j);
+    return r;
+}
+
+double
+f(double x, double m, double n)
+{
+    return I(m * x / (m*x + n), static_cast<unsigned>(m/2), static_cast<unsigned>(n/2));
+}
+
+int main(int, char**)
+{
+    // Purposefully only testing even integral values of m and n (for now)
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(2, 4);
+        P p(4, 2);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(v >= 0);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], p.m(), p.n()) - double(i)/N) < .01);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(4, 2);
+        P p(6, 8);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(v >= 0);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], p.m(), p.n()) - double(i)/N) < .01);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(18, 20);
+        P p(16, 14);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(v >= 0);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        for (int i = 0; i < N; ++i)
+            assert(std::abs(f(u[i], p.m(), p.n()) - double(i)/N) < .01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/get_param.pass.cpp
new file mode 100644
index 0000000..cc38df6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/io.pass.cpp
new file mode 100644
index 0000000..a1adc06
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const fisher_f_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            fisher_f_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d1(7, 5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/max.pass.cpp
new file mode 100644
index 0000000..1c75695
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/min.pass.cpp
new file mode 100644
index 0000000..41bcb84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_assign.pass.cpp
new file mode 100644
index 0000000..b9ad99c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.m() == .75);
+        assert(p.n() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_copy.pass.cpp
new file mode 100644
index 0000000..f224b5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.m() == 10);
+        assert(p.n() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_ctor.pass.cpp
new file mode 100644
index 0000000..cd9dfe5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.m() == 1);
+        assert(p.n() == 1);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.m() == 10);
+        assert(p.n() == 1);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.m() == 10);
+        assert(p.n() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_eq.pass.cpp
new file mode 100644
index 0000000..e8f14ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_types.pass.cpp
new file mode 100644
index 0000000..ebd4e6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/set_param.pass.cpp
new file mode 100644
index 0000000..a78347b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/types.pass.cpp
new file mode 100644
index 0000000..92ac0f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.f/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class fisher_f_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::fisher_f_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::fisher_f_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/assign.pass.cpp
new file mode 100644
index 0000000..263e52c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// lognormal_distribution& operator=(const lognormal_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::lognormal_distribution<> D;
+    D d1(20, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/copy.pass.cpp
new file mode 100644
index 0000000..1847a97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// lognormal_distribution(const lognormal_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::lognormal_distribution<> D;
+    D d1(20, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..47bbbff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// explicit lognormal_distribution(RealType mean = 0.0, RealType stddev = 1.0); // before C++20
+// lognormal_distribution() : lognormal_distribution(0.0) {}                    // C++20
+// explicit lognormal_distribution(RealType mean, RealType stddev = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::lognormal_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        D d;
+        assert(d.m() == 0);
+        assert(d.s() == 1);
+    }
+    {
+        typedef std::lognormal_distribution<> D;
+        D d(14.5);
+        assert(d.m() == 14.5);
+        assert(d.s() == 1);
+    }
+    {
+        typedef std::lognormal_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.m() == 14.5);
+        assert(d.s() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/ctor_param.pass.cpp
new file mode 100644
index 0000000..d831ede
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// explicit lognormal_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.m() == 0.25);
+        assert(d.s() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eq.pass.cpp
new file mode 100644
index 0000000..30f2a57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// bool operator=(const lognormal_distribution& x,
+//                const lognormal_distribution& y);
+// bool operator!(const lognormal_distribution& x,
+//                const lognormal_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::lognormal_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval.pass.cpp
new file mode 100644
index 0000000..9f25cea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval.pass.cpp
@@ -0,0 +1,262 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+void
+test1()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(-1./8192, 0.015625);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(d.m() + sqr(d.s())/2);
+    double x_var = (std::exp(sqr(d.s())) - 1) * std::exp(2*d.m() + sqr(d.s()));
+    double x_skew = (std::exp(sqr(d.s())) + 2) *
+          std::sqrt((std::exp(sqr(d.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(d.s())) + 2*std::exp(3*sqr(d.s())) +
+                      3*std::exp(2*sqr(d.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.05);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.25);
+}
+
+void
+test2()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(-1./32, 0.25);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(d.m() + sqr(d.s())/2);
+    double x_var = (std::exp(sqr(d.s())) - 1) * std::exp(2*d.m() + sqr(d.s()));
+    double x_skew = (std::exp(sqr(d.s())) + 2) *
+          std::sqrt((std::exp(sqr(d.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(d.s())) + 2*std::exp(3*sqr(d.s())) +
+                      3*std::exp(2*sqr(d.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+}
+
+void
+test3()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(-1./8, 0.5);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(d.m() + sqr(d.s())/2);
+    double x_var = (std::exp(sqr(d.s())) - 1) * std::exp(2*d.m() + sqr(d.s()));
+    double x_skew = (std::exp(sqr(d.s())) + 2) *
+          std::sqrt((std::exp(sqr(d.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(d.s())) + 2*std::exp(3*sqr(d.s())) +
+                      3*std::exp(2*sqr(d.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.02);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.05);
+}
+
+void
+test4()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d;
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(d.m() + sqr(d.s())/2);
+    double x_var = (std::exp(sqr(d.s())) - 1) * std::exp(2*d.m() + sqr(d.s()));
+    double x_skew = (std::exp(sqr(d.s())) + 2) *
+          std::sqrt((std::exp(sqr(d.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(d.s())) + 2*std::exp(3*sqr(d.s())) +
+                      3*std::exp(2*sqr(d.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.02);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.08);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.4);
+}
+
+void
+test5()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(-0.78125, 1.25);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(d.m() + sqr(d.s())/2);
+    double x_var = (std::exp(sqr(d.s())) - 1) * std::exp(2*d.m() + sqr(d.s()));
+    double x_skew = (std::exp(sqr(d.s())) + 2) *
+          std::sqrt((std::exp(sqr(d.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(d.s())) + 2*std::exp(3*sqr(d.s())) +
+                      3*std::exp(2*sqr(d.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.04);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.2);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.7);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval_param.PR52906.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval_param.PR52906.pass.cpp
new file mode 100644
index 0000000..d360b11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval_param.PR52906.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+//   https://llvm.org/PR52906
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::lognormal_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d;
+
+    const P p1 = d.param();
+    const P p2 = d.param();
+    assert(p1 == p2);
+    (void) d(g, p1); // This line must not modify p1.
+    assert(p1 == p2);
+    LIBCPP_ASSERT(p1 == d.param());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval_param.pass.cpp
new file mode 100644
index 0000000..9c9eb85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/eval_param.pass.cpp
@@ -0,0 +1,272 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+void
+test1()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d;
+    P p(-1./8192, 0.015625);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(p.m() + sqr(p.s())/2);
+    double x_var = (std::exp(sqr(p.s())) - 1) * std::exp(2*p.m() + sqr(p.s()));
+    double x_skew = (std::exp(sqr(p.s())) + 2) *
+          std::sqrt((std::exp(sqr(p.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(p.s())) + 2*std::exp(3*sqr(p.s())) +
+                      3*std::exp(2*sqr(p.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.05);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.25);
+}
+
+void
+test2()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d;
+    P p(-1./32, 0.25);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(p.m() + sqr(p.s())/2);
+    double x_var = (std::exp(sqr(p.s())) - 1) * std::exp(2*p.m() + sqr(p.s()));
+    double x_skew = (std::exp(sqr(p.s())) + 2) *
+          std::sqrt((std::exp(sqr(p.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(p.s())) + 2*std::exp(3*sqr(p.s())) +
+                      3*std::exp(2*sqr(p.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+}
+
+void
+test3()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d;
+    P p(-1./8, 0.5);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(p.m() + sqr(p.s())/2);
+    double x_var = (std::exp(sqr(p.s())) - 1) * std::exp(2*p.m() + sqr(p.s()));
+    double x_skew = (std::exp(sqr(p.s())) + 2) *
+          std::sqrt((std::exp(sqr(p.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(p.s())) + 2*std::exp(3*sqr(p.s())) +
+                      3*std::exp(2*sqr(p.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.02);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.05);
+}
+
+void
+test4()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d(3, 4);
+    P p;
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(p.m() + sqr(p.s())/2);
+    double x_var = (std::exp(sqr(p.s())) - 1) * std::exp(2*p.m() + sqr(p.s()));
+    double x_skew = (std::exp(sqr(p.s())) + 2) *
+          std::sqrt((std::exp(sqr(p.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(p.s())) + 2*std::exp(3*sqr(p.s())) +
+                      3*std::exp(2*sqr(p.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.02);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.08);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.4);
+}
+
+void
+test5()
+{
+    typedef std::lognormal_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d;
+    P p(-0.78125, 1.25);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        assert(v > 0);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = std::exp(p.m() + sqr(p.s())/2);
+    double x_var = (std::exp(sqr(p.s())) - 1) * std::exp(2*p.m() + sqr(p.s()));
+    double x_skew = (std::exp(sqr(p.s())) + 2) *
+          std::sqrt((std::exp(sqr(p.s())) - 1));
+    double x_kurtosis = std::exp(4*sqr(p.s())) + 2*std::exp(3*sqr(p.s())) +
+                      3*std::exp(2*sqr(p.s())) - 6;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.04);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.2);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.7);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/get_param.pass.cpp
new file mode 100644
index 0000000..49d2b57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/io.pass.cpp
new file mode 100644
index 0000000..3764154
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const lognormal_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            lognormal_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        D d1(7, 5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/max.pass.cpp
new file mode 100644
index 0000000..7325607
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/min.pass.cpp
new file mode 100644
index 0000000..cf5a709
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_assign.pass.cpp
new file mode 100644
index 0000000..28ae7d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.m() == .75);
+        assert(p.s() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_copy.pass.cpp
new file mode 100644
index 0000000..32936fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.m() == 10);
+        assert(p.s() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_ctor.pass.cpp
new file mode 100644
index 0000000..fd5e615
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.m() == 0);
+        assert(p.s() == 1);
+    }
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.m() == 10);
+        assert(p.s() == 1);
+    }
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.m() == 10);
+        assert(p.s() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_eq.pass.cpp
new file mode 100644
index 0000000..010d7ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_types.pass.cpp
new file mode 100644
index 0000000..6824fd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/set_param.pass.cpp
new file mode 100644
index 0000000..4de505e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/types.pass.cpp
new file mode 100644
index 0000000..a0b76cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.lognormal/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class lognormal_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::lognormal_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::lognormal_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/assign.pass.cpp
new file mode 100644
index 0000000..8214621
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// normal_distribution& operator=(const normal_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::normal_distribution<> D;
+    D d1(20, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/copy.pass.cpp
new file mode 100644
index 0000000..774d5de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// normal_distribution(const normal_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::normal_distribution<> D;
+    D d1(20, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..f6e8087
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// explicit normal_distribution(RealType mean = 0.0, RealType stddev = 1.0); // before C++20
+// normal_distribution() : normal_distribution(0.0) {}                       // C++20
+// explicit normal_distribution(RealType mean, RealType stddev = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::normal_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        D d;
+        assert(d.mean() == 0);
+        assert(d.stddev() == 1);
+    }
+    {
+        typedef std::normal_distribution<> D;
+        D d(14.5);
+        assert(d.mean() == 14.5);
+        assert(d.stddev() == 1);
+    }
+    {
+        typedef std::normal_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.mean() == 14.5);
+        assert(d.stddev() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/ctor_param.pass.cpp
new file mode 100644
index 0000000..45f80f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// explicit normal_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.mean() == 0.25);
+        assert(d.stddev() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eq.pass.cpp
new file mode 100644
index 0000000..feace94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// bool operator=(const normal_distribution& x,
+//                const normal_distribution& y);
+// bool operator!(const normal_distribution& x,
+//                const normal_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::normal_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eval.pass.cpp
new file mode 100644
index 0000000..b869fbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eval.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(5, 4);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.mean();
+        double x_var = sqr(d.stddev());
+        double x_skew = 0;
+        double x_kurtosis = 0;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eval_param.pass.cpp
new file mode 100644
index 0000000..3b5cae1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/eval_param.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(5, 4);
+        P p(50, .5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.mean();
+        double x_var = sqr(p.stddev());
+        double x_skew = 0;
+        double x_kurtosis = 0;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs(kurtosis - x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/get_param.pass.cpp
new file mode 100644
index 0000000..4635994
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/io.pass.cpp
new file mode 100644
index 0000000..dcbeaa3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const normal_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            normal_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        D d1(7, 5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/max.pass.cpp
new file mode 100644
index 0000000..16b7a65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/min.pass.cpp
new file mode 100644
index 0000000..04fc3b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/min.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+
+// result_type min() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == -INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_assign.pass.cpp
new file mode 100644
index 0000000..ee44355
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.mean() == .75);
+        assert(p.stddev() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_copy.pass.cpp
new file mode 100644
index 0000000..5a46150
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.mean() == 10);
+        assert(p.stddev() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_ctor.pass.cpp
new file mode 100644
index 0000000..b770bd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.mean() == 0);
+        assert(p.stddev() == 1);
+    }
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.mean() == 10);
+        assert(p.stddev() == 1);
+    }
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.mean() == 10);
+        assert(p.stddev() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_eq.pass.cpp
new file mode 100644
index 0000000..2110e25
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_types.pass.cpp
new file mode 100644
index 0000000..27434da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/set_param.pass.cpp
new file mode 100644
index 0000000..e82bd9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/types.pass.cpp
new file mode 100644
index 0000000..a422fa0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.normal/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class normal_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::normal_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::normal_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/assign.pass.cpp
new file mode 100644
index 0000000..6e737fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// student_t_distribution& operator=(const student_t_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::student_t_distribution<> D;
+    D d1(20.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/copy.pass.cpp
new file mode 100644
index 0000000..1b9158a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// student_t_distribution(const student_t_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::student_t_distribution<> D;
+    D d1(21.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/ctor_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/ctor_double.pass.cpp
new file mode 100644
index 0000000..5077d4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/ctor_double.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// explicit student_t_distribution(RealType n = 1.0);        // before C++20
+// student_t_distribution() : student_t_distribution(1.0) {} // C++20
+// explicit student_t_distribution(RealType n);              // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::student_t_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d;
+        assert(d.n() == 1);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        D d(14.5);
+        assert(d.n() == 14.5);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/ctor_param.pass.cpp
new file mode 100644
index 0000000..9c52756
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/ctor_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// explicit student_t_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.n() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eq.pass.cpp
new file mode 100644
index 0000000..9a79491
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// bool operator=(const student_t_distribution& x,
+//                const student_t_distribution& y);
+// bool operator!(const student_t_distribution& x,
+//                const student_t_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d1(2.5);
+        D d2(2.5);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        D d1(4);
+        D d2(4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eval.pass.cpp
new file mode 100644
index 0000000..a73e06b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eval.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(5.5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = d.n() / (d.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (d.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(10);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = d.n() / (d.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (d.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(100);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = d.n() / (d.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (d.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eval_param.pass.cpp
new file mode 100644
index 0000000..01ce61a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/eval_param.pass.cpp
@@ -0,0 +1,148 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        P p(5.5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = p.n() / (p.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (p.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        P p(10);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = p.n() / (p.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (p.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        P p(100);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+            u.push_back(d(g, p));
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 0;
+        double x_var = p.n() / (p.n() - 2);
+        double x_skew = 0;
+        double x_kurtosis = 6 / (p.n() - 4);
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.02);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/get_param.pass.cpp
new file mode 100644
index 0000000..82b3848
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/io.pass.cpp
new file mode 100644
index 0000000..f6a7c11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const student_t_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            student_t_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d1(7);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/max.pass.cpp
new file mode 100644
index 0000000..7cc29e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d(5);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/min.pass.cpp
new file mode 100644
index 0000000..7099fc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/min.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+
+// result_type min() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        D d(.5);
+        assert(d.min() == -INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_assign.pass.cpp
new file mode 100644
index 0000000..971b6b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75);
+        param_type p;
+        p = p0;
+        assert(p.n() == .75);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_copy.pass.cpp
new file mode 100644
index 0000000..7aad07b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_copy.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10);
+        param_type p = p0;
+        assert(p.n() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_ctor.pass.cpp
new file mode 100644
index 0000000..b449239
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_ctor.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.n() == 1);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.n() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_eq.pass.cpp
new file mode 100644
index 0000000..9cd0844
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_types.pass.cpp
new file mode 100644
index 0000000..25e59d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/set_param.pass.cpp
new file mode 100644
index 0000000..e5432ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/types.pass.cpp
new file mode 100644
index 0000000..2c786cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.norm/rand.dist.norm.t/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class student_t_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::student_t_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::student_t_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/assign.pass.cpp
new file mode 100644
index 0000000..86481d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// exponential_distribution& operator=(const exponential_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::exponential_distribution<> D;
+    D d1(0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/copy.pass.cpp
new file mode 100644
index 0000000..07601c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// exponential_distribution(const exponential_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::exponential_distribution<> D;
+    D d1(1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/ctor_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/ctor_double.pass.cpp
new file mode 100644
index 0000000..1259a7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/ctor_double.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// explicit exponential_distribution(RealType lambda = 1.0);     // before C++20
+// exponential_distribution() : exponential_distribution(1.0) {} // C++20
+// explicit exponential_distribution(RealType lambda);           // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::exponential_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        D d;
+        assert(d.lambda() == 1);
+    }
+    {
+        typedef std::exponential_distribution<> D;
+        D d(3.5);
+        assert(d.lambda() == 3.5);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/ctor_param.pass.cpp
new file mode 100644
index 0000000..94a6e72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/ctor_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// explicit exponential_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.lambda() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eq.pass.cpp
new file mode 100644
index 0000000..dd69d93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// bool operator=(const exponential_distribution& x,
+//                const exponential_distribution& y);
+// bool operator!(const exponential_distribution& x,
+//                const exponential_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        D d1(.25);
+        D d2(.25);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::exponential_distribution<> D;
+        D d1(.28);
+        D d2(.25);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eval.pass.cpp
new file mode 100644
index 0000000..8bceb91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eval.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(.75);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 1/d.lambda();
+        double x_var = 1/sqr(d.lambda());
+        double x_skew = 2;
+        double x_kurtosis = 6;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::exponential_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(1);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 1/d.lambda();
+        double x_var = 1/sqr(d.lambda());
+        double x_skew = 2;
+        double x_kurtosis = 6;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::exponential_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(10);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 1/d.lambda();
+        double x_var = 1/sqr(d.lambda());
+        double x_skew = 2;
+        double x_kurtosis = 6;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eval_param.pass.cpp
new file mode 100644
index 0000000..016ba27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/eval_param.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(.75);
+        P p(2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = 1/p.lambda();
+        double x_var = 1/sqr(p.lambda());
+        double x_skew = 2;
+        double x_kurtosis = 6;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/get_param.pass.cpp
new file mode 100644
index 0000000..c12dc35
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/io.pass.cpp
new file mode 100644
index 0000000..a7525b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const exponential_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            exponential_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        D d1(7);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/max.pass.cpp
new file mode 100644
index 0000000..123bff6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        D d(.25);
+        D::result_type m = d.max();
+        assert(m == std::numeric_limits<D::result_type>::infinity());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/min.pass.cpp
new file mode 100644
index 0000000..3aac03a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        D d(.5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_assign.pass.cpp
new file mode 100644
index 0000000..6dd2750
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.7);
+        param_type p;
+        p = p0;
+        assert(p.lambda() == .7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_copy.pass.cpp
new file mode 100644
index 0000000..493cd85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_copy.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.125);
+        param_type p = p0;
+        assert(p.lambda() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_ctor.pass.cpp
new file mode 100644
index 0000000..900bb0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_ctor.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.lambda() == 1);
+    }
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.lambda() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_eq.pass.cpp
new file mode 100644
index 0000000..1f1fb9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_types.pass.cpp
new file mode 100644
index 0000000..93d0008
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/set_param.pass.cpp
new file mode 100644
index 0000000..7e35150
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/types.pass.cpp
new file mode 100644
index 0000000..429c5ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.exp/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class exponential_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::exponential_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::exponential_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/assign.pass.cpp
new file mode 100644
index 0000000..1c2ad09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// extreme_value_distribution& operator=(const extreme_value_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::extreme_value_distribution<> D;
+    D d1(.5, 2);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/copy.pass.cpp
new file mode 100644
index 0000000..b8c631a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// extreme_value_distribution(const extreme_value_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::extreme_value_distribution<> D;
+    D d1(.5, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..17fb9a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// explicit extreme_value_distribution(RealType a = 0.0, RealType b = 1.0); // before C++20
+// extreme_value_distribution() : extreme_value_distribution(0.0) {}        // C++20
+// explicit extreme_value_distribution(RealType a, RealType b = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::extreme_value_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d;
+        assert(d.a() == 0);
+        assert(d.b() == 1);
+    }
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d(14.5);
+        assert(d.a() == 14.5);
+        assert(d.b() == 1);
+    }
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.a() == 14.5);
+        assert(d.b() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/ctor_param.pass.cpp
new file mode 100644
index 0000000..74e74fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// explicit extreme_value_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.a() == 0.25);
+        assert(d.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eq.pass.cpp
new file mode 100644
index 0000000..9f2b077
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// bool operator=(const extreme_value_distribution& x,
+//                const extreme_value_distribution& y);
+// bool operator!(const extreme_value_distribution& x,
+//                const extreme_value_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eval.pass.cpp
new file mode 100644
index 0000000..9aaf6ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eval.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+void
+test1()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(0.5, 2);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.a() + d.b() * 0.577215665;
+    double x_var = sqr(d.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+void
+test2()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(1, 2);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.a() + d.b() * 0.577215665;
+    double x_var = sqr(d.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+void
+test3()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(1.5, 3);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.a() + d.b() * 0.577215665;
+    double x_var = sqr(d.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+void
+test4()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(3, 4);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.a() + d.b() * 0.577215665;
+    double x_var = sqr(d.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eval_param.pass.cpp
new file mode 100644
index 0000000..cb390c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/eval_param.pass.cpp
@@ -0,0 +1,213 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+void
+test1()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d(-0.5, 1);
+    P p(0.5, 2);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = p.a() + p.b() * 0.577215665;
+    double x_var = sqr(p.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+void
+test2()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d(-0.5, 1);
+    P p(1, 2);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = p.a() + p.b() * 0.577215665;
+    double x_var = sqr(p.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+void
+test3()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d(-0.5, 1);
+    P p(1.5, 3);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = p.a() + p.b() * 0.577215665;
+    double x_var = sqr(p.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+void
+test4()
+{
+    typedef std::extreme_value_distribution<> D;
+    typedef D::param_type P;
+    typedef std::mt19937 G;
+    G g;
+    D d(-0.5, 1);
+    P p(3, 4);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g, p);
+        u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+        double dbl = (u[i] - mean);
+        double d2 = sqr(dbl);
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = p.a() + p.b() * 0.577215665;
+    double x_var = sqr(p.b()) * 1.644934067;
+    double x_skew = 1.139547;
+    double x_kurtosis = 12./5;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/get_param.pass.cpp
new file mode 100644
index 0000000..daf4944
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/io.pass.cpp
new file mode 100644
index 0000000..df925f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const extreme_value_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            extreme_value_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d1(7.5, 5.5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/max.pass.cpp
new file mode 100644
index 0000000..48a3a92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/min.pass.cpp
new file mode 100644
index 0000000..43a3c7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/min.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+
+// result_type min() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == -INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_assign.pass.cpp
new file mode 100644
index 0000000..348644c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.a() == .75);
+        assert(p.b() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_copy.pass.cpp
new file mode 100644
index 0000000..df85d23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.a() == 10);
+        assert(p.b() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_ctor.pass.cpp
new file mode 100644
index 0000000..2c56e9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.a() == 0);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.a() == 10);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.a() == 10);
+        assert(p.b() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_eq.pass.cpp
new file mode 100644
index 0000000..8c16696
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_types.pass.cpp
new file mode 100644
index 0000000..de504da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/set_param.pass.cpp
new file mode 100644
index 0000000..ab3b1e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/types.pass.cpp
new file mode 100644
index 0000000..bce0dd5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.extreme/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class extreme_value_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::extreme_value_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::extreme_value_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/assign.pass.cpp
new file mode 100644
index 0000000..535f3d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// gamma_distribution& operator=(const gamma_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::gamma_distribution<> D;
+    D d1(20, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/copy.pass.cpp
new file mode 100644
index 0000000..3c03793
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// gamma_distribution(const gamma_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::gamma_distribution<> D;
+    D d1(20, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..c0fa236
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// explicit gamma_distribution(RealType alpha = 1.0, RealType beta = 1.0); // before C++20
+// gamma_distribution() : gamma_distribution(1.0) {}                       // C++20
+// explicit gamma_distribution(RealType alpha, RealType beta = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::gamma_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        D d;
+        assert(d.alpha() == 1);
+        assert(d.beta() == 1);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        D d(14.5);
+        assert(d.alpha() == 14.5);
+        assert(d.beta() == 1);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.alpha() == 14.5);
+        assert(d.beta() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/ctor_param.pass.cpp
new file mode 100644
index 0000000..26348cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// explicit gamma_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.alpha() == 0.25);
+        assert(d.beta() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eq.pass.cpp
new file mode 100644
index 0000000..488a687
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// bool operator=(const gamma_distribution& x,
+//                const gamma_distribution& y);
+// bool operator!(const gamma_distribution& x,
+//                const gamma_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eval.pass.cpp
new file mode 100644
index 0000000..7af50cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eval.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(0.5, 2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.alpha() * d.beta();
+        double x_var = d.alpha() * sqr(d.beta());
+        double x_skew = 2 / std::sqrt(d.alpha());
+        double x_kurtosis = 6 / d.alpha();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(1, .5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.alpha() * d.beta();
+        double x_var = d.alpha() * sqr(d.beta());
+        double x_skew = 2 / std::sqrt(d.alpha());
+        double x_kurtosis = 6 / d.alpha();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(2, 3);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.alpha() * d.beta();
+        double x_var = d.alpha() * sqr(d.beta());
+        double x_skew = 2 / std::sqrt(d.alpha());
+        double x_kurtosis = 6 / d.alpha();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eval_param.pass.cpp
new file mode 100644
index 0000000..a782770
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/eval_param.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(0.5, 2);
+        P p(1, .5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.alpha() * p.beta();
+        double x_var = p.alpha() * sqr(p.beta());
+        double x_skew = 2 / std::sqrt(p.alpha());
+        double x_kurtosis = 6 / p.alpha();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(1, .5);
+        P p(2, 3);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.alpha() * p.beta();
+        double x_var = p.alpha() * sqr(p.beta());
+        double x_skew = 2 / std::sqrt(p.alpha());
+        double x_kurtosis = 6 / p.alpha();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(2, 3);
+        P p(.5, 2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() < v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.alpha() * p.beta();
+        double x_var = p.alpha() * sqr(p.beta());
+        double x_skew = 2 / std::sqrt(p.alpha());
+        double x_kurtosis = 6 / p.alpha();
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/get_param.pass.cpp
new file mode 100644
index 0000000..c7d9aa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/io.pass.cpp
new file mode 100644
index 0000000..bb9d2d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const gamma_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            gamma_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        D d1(7, 5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/max.pass.cpp
new file mode 100644
index 0000000..c8bb622
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/min.pass.cpp
new file mode 100644
index 0000000..0136c4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_assign.pass.cpp
new file mode 100644
index 0000000..5606c35
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.alpha() == .75);
+        assert(p.beta() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_copy.pass.cpp
new file mode 100644
index 0000000..f46280c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.alpha() == 10);
+        assert(p.beta() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_ctor.pass.cpp
new file mode 100644
index 0000000..54024f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.alpha() == 1);
+        assert(p.beta() == 1);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.alpha() == 10);
+        assert(p.beta() == 1);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.alpha() == 10);
+        assert(p.beta() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_eq.pass.cpp
new file mode 100644
index 0000000..da7fad8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_types.pass.cpp
new file mode 100644
index 0000000..a8a06b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/set_param.pass.cpp
new file mode 100644
index 0000000..0db4482
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/types.pass.cpp
new file mode 100644
index 0000000..e95cfb1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.gamma/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class gamma_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::gamma_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::gamma_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/assign.pass.cpp
new file mode 100644
index 0000000..cff7a6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// poisson_distribution& operator=(const poisson_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::poisson_distribution<> D;
+    D d1(0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/copy.pass.cpp
new file mode 100644
index 0000000..4e7f403
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// poisson_distribution(const poisson_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::poisson_distribution<> D;
+    D d1(1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/ctor_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/ctor_double.pass.cpp
new file mode 100644
index 0000000..a9666d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/ctor_double.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// explicit poisson_distribution(double mean = 1.0);     // before C++20
+// poisson_distribution() : poisson_distribution(1.0) {} // C++20
+// explicit poisson_distribution(double mean);           // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::poisson_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, double>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        D d;
+        assert(d.mean() == 1);
+    }
+    {
+        typedef std::poisson_distribution<> D;
+        D d(3.5);
+        assert(d.mean() == 3.5);
+    }
+
+    test_implicit<int>();
+    test_implicit<long>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/ctor_param.pass.cpp
new file mode 100644
index 0000000..a9eb91f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/ctor_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// explicit poisson_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(p);
+        assert(d.mean() == 0.25);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eq.pass.cpp
new file mode 100644
index 0000000..991f7f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// bool operator=(const poisson_distribution& x,
+//                const poisson_distribution& y);
+// bool operator!(const poisson_distribution& x,
+//                const poisson_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        D d1(.25);
+        D d2(.25);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::poisson_distribution<> D;
+        D d1(.28);
+        D d2(.25);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eval.pass.cpp
new file mode 100644
index 0000000..6aef9b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eval.pass.cpp
@@ -0,0 +1,239 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+#include <limits>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+T sqr(T x) {
+  return x * x;
+}
+
+void test_bad_ranges() {
+  // Test cases where the mean is around the largest representable integer for
+  // `result_type`. These cases don't generate valid poisson distributions, but
+  // at least they don't blow up.
+  std::mt19937 eng;
+
+  {
+    std::poisson_distribution<std::int16_t> distribution(32710.9);
+    for (int i=0; i < 1000; ++i) {
+      volatile std::int16_t res = distribution(eng);
+      ((void)res);
+    }
+  }
+  {
+    std::poisson_distribution<std::int16_t> distribution(std::numeric_limits<std::int16_t>::max());
+    for (int i=0; i < 1000; ++i) {
+      volatile std::int16_t res = distribution(eng);
+      ((void)res);
+    }
+  }
+  {
+    std::poisson_distribution<std::int16_t> distribution(
+    static_cast<double>(std::numeric_limits<std::int16_t>::max()) + 10);
+    for (int i=0; i < 1000; ++i) {
+      volatile std::int16_t res = distribution(eng);
+      ((void)res);
+    }
+  }
+  {
+    std::poisson_distribution<std::int16_t> distribution(
+      static_cast<double>(std::numeric_limits<std::int16_t>::max()) * 2);
+      for (int i=0; i < 1000; ++i) {
+        volatile std::int16_t res = distribution(eng);
+        ((void)res);
+      }
+  }
+  {
+    // We convert `INF` to `DBL_MAX` otherwise the distribution will hang.
+    std::poisson_distribution<std::int16_t> distribution(std::numeric_limits<double>::infinity());
+    for (int i=0; i < 1000; ++i) {
+      volatile std::int16_t res = distribution(eng);
+      ((void)res);
+    }
+  }
+  {
+    std::poisson_distribution<std::int16_t> distribution(0);
+    for (int i=0; i < 1000; ++i) {
+      volatile std::int16_t res = distribution(eng);
+      ((void)res);
+    }
+  }
+  {
+    // We convert `INF` to `DBL_MAX` otherwise the distribution will hang.
+    std::poisson_distribution<std::int16_t> distribution(-100);
+    for (int i=0; i < 1000; ++i) {
+      volatile std::int16_t res = distribution(eng);
+      ((void)res);
+    }
+  }
+}
+
+template <class T>
+void tests() {
+  {
+    typedef std::poisson_distribution<T> D;
+    typedef std::minstd_rand G;
+    G g;
+    D d(2);
+    const int N = 100000;
+    std::vector<double> u;
+    for (int i = 0; i < N; ++i)
+    {
+      typename D::result_type v = d(g);
+      assert(d.min() <= v && v <= d.max());
+      u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+      double dbl = (u[i] - mean);
+      double d2 = sqr(dbl);
+      var += d2;
+      skew += dbl * d2;
+      kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.mean();
+    double x_var = d.mean();
+    double x_skew = 1 / std::sqrt(x_var);
+    double x_kurtosis = 1 / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+  }
+  {
+    typedef std::poisson_distribution<T> D;
+    typedef std::minstd_rand G;
+    G g;
+    D d(0.75);
+    const int N = 100000;
+    std::vector<double> u;
+    for (int i = 0; i < N; ++i)
+    {
+      typename D::result_type v = d(g);
+      assert(d.min() <= v && v <= d.max());
+      u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+      double dbl = (u[i] - mean);
+      double d2 = sqr(dbl);
+      var += d2;
+      skew += dbl * d2;
+      kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.mean();
+    double x_var = d.mean();
+    double x_skew = 1 / std::sqrt(x_var);
+    double x_kurtosis = 1 / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+  }
+  {
+    typedef std::poisson_distribution<T> D;
+    typedef std::mt19937 G;
+    G g;
+    D d(20);
+    const int N = 1000000;
+    std::vector<double> u;
+    for (int i = 0; i < N; ++i)
+    {
+      typename D::result_type v = d(g);
+      assert(d.min() <= v && v <= d.max());
+      u.push_back(v);
+    }
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (unsigned i = 0; i < u.size(); ++i)
+    {
+      double dbl = (u[i] - mean);
+      double d2 = sqr(dbl);
+      var += d2;
+      skew += dbl * d2;
+      kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+    kurtosis -= 3;
+    double x_mean = d.mean();
+    double x_var = d.mean();
+    double x_skew = 1 / std::sqrt(x_var);
+    double x_kurtosis = 1 / x_var;
+    assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+    assert(std::abs((var - x_var) / x_var) < 0.01);
+    assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+    assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+  }
+}
+
+int main(int, char**) {
+  test_bad_ranges();
+
+  tests<short>();
+  tests<int>();
+  tests<long>();
+  tests<long long>();
+
+  tests<unsigned short>();
+  tests<unsigned int>();
+  tests<unsigned long>();
+  tests<unsigned long long>();
+
+#if defined(_LIBCPP_VERSION) // extension
+  // TODO: std::poisson_distribution currently doesn't work reliably with small types.
+  // tests<int8_t>();
+  // tests<uint8_t>();
+#if !defined(TEST_HAS_NO_INT128)
+  tests<__int128_t>();
+  tests<__uint128_t>();
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eval_param.pass.cpp
new file mode 100644
index 0000000..8d60be4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/eval_param.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(.75);
+        P p(2);
+        const int N = 100000;
+        std::vector<double> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.mean();
+        double x_var = p.mean();
+        double x_skew = 1 / std::sqrt(x_var);
+        double x_kurtosis = 1 / x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d(2);
+        P p(.75);
+        const int N = 100000;
+        std::vector<double> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.mean();
+        double x_var = p.mean();
+        double x_skew = 1 / std::sqrt(x_var);
+        double x_kurtosis = 1 / x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.04);
+    }
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(2);
+        P p(20);
+        const int N = 1000000;
+        std::vector<double> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v && v <= d.max());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (unsigned i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.mean();
+        double x_var = p.mean();
+        double x_skew = 1 / std::sqrt(x_var);
+        double x_kurtosis = 1 / x_var;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/get_param.pass.cpp
new file mode 100644
index 0000000..0deda61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type P;
+        P p(.125);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/io.pass.cpp
new file mode 100644
index 0000000..d78f19d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// template <class CharT, class Traits, class IntType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const poisson_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class IntType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            poisson_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        D d1(7);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/max.pass.cpp
new file mode 100644
index 0000000..1044b8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        D d(.25);
+        D::result_type m = d.max();
+        assert(m == std::numeric_limits<int>::max());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/min.pass.cpp
new file mode 100644
index 0000000..69192ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        D d(.5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_assign.pass.cpp
new file mode 100644
index 0000000..00b1b12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_assign.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.7);
+        param_type p;
+        p = p0;
+        assert(p.mean() == .7);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_copy.pass.cpp
new file mode 100644
index 0000000..24f0e40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_copy.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.125);
+        param_type p = p0;
+        assert(p.mean() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_ctor.pass.cpp
new file mode 100644
index 0000000..73c1e70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_ctor.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.mean() == 1);
+    }
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.mean() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_eq.pass.cpp
new file mode 100644
index 0000000..ec889bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.75);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75);
+        param_type p2(0.5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_types.pass.cpp
new file mode 100644
index 0000000..fd518d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/set_param.pass.cpp
new file mode 100644
index 0000000..67b8482
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class poisson_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25);
+        D d(0.75);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/types.pass.cpp
new file mode 100644
index 0000000..10664c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.poisson/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class poisson_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::poisson_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, int>::value), "");
+    }
+    {
+        typedef std::poisson_distribution<unsigned long long> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, unsigned long long>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/assign.pass.cpp
new file mode 100644
index 0000000..6c461c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// weibull_distribution& operator=(const weibull_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::weibull_distribution<> D;
+    D d1(20, 0.75);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/copy.pass.cpp
new file mode 100644
index 0000000..44faee8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// weibull_distribution(const weibull_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::weibull_distribution<> D;
+    D d1(20, 1.75);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/ctor_double_double.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/ctor_double_double.pass.cpp
new file mode 100644
index 0000000..9d1558c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/ctor_double_double.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// explicit weibull_distribution(RealType a = 1.0, RealType b = 1.0); // before C++20
+// weibull_distribution() : weibull_distribution(1.0) {}              // C++20
+// explicit weibull_distribution(RealType a, RealType b = 1.0);       // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::weibull_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(1) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        D d;
+        assert(d.a() == 1);
+        assert(d.b() == 1);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        D d(14.5);
+        assert(d.a() == 14.5);
+        assert(d.b() == 1);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        D d(14.5, 5.25);
+        assert(d.a() == 14.5);
+        assert(d.b() == 5.25);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/ctor_param.pass.cpp
new file mode 100644
index 0000000..835e9df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// explicit weibull_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 10);
+        D d(p);
+        assert(d.a() == 0.25);
+        assert(d.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eq.pass.cpp
new file mode 100644
index 0000000..cadf59a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// bool operator=(const weibull_distribution& x,
+//                const weibull_distribution& y);
+// bool operator!(const weibull_distribution& x,
+//                const weibull_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        D d1(2.5, 4);
+        D d2(2.5, 4.5);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eval.pass.cpp
new file mode 100644
index 0000000..641f061
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eval.pass.cpp
@@ -0,0 +1,167 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(0.5, 2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() <= v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.b() * std::tgamma(1 + 1/d.a());
+        double x_var = sqr(d.b()) * std::tgamma(1 + 2/d.a()) - sqr(x_mean);
+        double x_skew = (sqr(d.b())*d.b() * std::tgamma(1 + 3/d.a()) -
+                        3*x_mean*x_var - sqr(x_mean)*x_mean) /
+                        (std::sqrt(x_var)*x_var);
+        double x_kurtosis = (sqr(sqr(d.b())) * std::tgamma(1 + 4/d.a()) -
+                       4*x_skew*x_var*sqrt(x_var)*x_mean -
+                       6*sqr(x_mean)*x_var - sqr(sqr(x_mean))) / sqr(x_var) - 3;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(1, .5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() <= v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.b() * std::tgamma(1 + 1/d.a());
+        double x_var = sqr(d.b()) * std::tgamma(1 + 2/d.a()) - sqr(x_mean);
+        double x_skew = (sqr(d.b())*d.b() * std::tgamma(1 + 3/d.a()) -
+                        3*x_mean*x_var - sqr(x_mean)*x_mean) /
+                        (std::sqrt(x_var)*x_var);
+        double x_kurtosis = (sqr(sqr(d.b())) * std::tgamma(1 + 4/d.a()) -
+                       4*x_skew*x_var*sqrt(x_var)*x_mean -
+                       6*sqr(x_mean)*x_var - sqr(sqr(x_mean))) / sqr(x_var) - 3;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d(2, 3);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.min() <= v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = d.b() * std::tgamma(1 + 1/d.a());
+        double x_var = sqr(d.b()) * std::tgamma(1 + 2/d.a()) - sqr(x_mean);
+        double x_skew = (sqr(d.b())*d.b() * std::tgamma(1 + 3/d.a()) -
+                        3*x_mean*x_var - sqr(x_mean)*x_mean) /
+                        (std::sqrt(x_var)*x_var);
+        double x_kurtosis = (sqr(sqr(d.b())) * std::tgamma(1 + 4/d.a()) -
+                       4*x_skew*x_var*sqrt(x_var)*x_mean -
+                       6*sqr(x_mean)*x_var - sqr(sqr(x_mean))) / sqr(x_var) - 3;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eval_param.pass.cpp
new file mode 100644
index 0000000..a719819
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/eval_param.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(0.5, 2);
+        P p(1, .5);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.b() * std::tgamma(1 + 1/p.a());
+        double x_var = sqr(p.b()) * std::tgamma(1 + 2/p.a()) - sqr(x_mean);
+        double x_skew = (sqr(p.b())*p.b() * std::tgamma(1 + 3/p.a()) -
+                        3*x_mean*x_var - sqr(x_mean)*x_mean) /
+                        (std::sqrt(x_var)*x_var);
+        double x_kurtosis = (sqr(sqr(p.b())) * std::tgamma(1 + 4/p.a()) -
+                       4*x_skew*x_var*sqrt(x_var)*x_mean -
+                       6*sqr(x_mean)*x_var - sqr(sqr(x_mean))) / sqr(x_var) - 3;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(1, .5);
+        P p(2, 3);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.b() * std::tgamma(1 + 1/p.a());
+        double x_var = sqr(p.b()) * std::tgamma(1 + 2/p.a()) - sqr(x_mean);
+        double x_skew = (sqr(p.b())*p.b() * std::tgamma(1 + 3/p.a()) -
+                        3*x_mean*x_var - sqr(x_mean)*x_mean) /
+                        (std::sqrt(x_var)*x_var);
+        double x_kurtosis = (sqr(sqr(p.b())) * std::tgamma(1 + 4/p.a()) -
+                       4*x_skew*x_var*sqrt(x_var)*x_mean -
+                       6*sqr(x_mean)*x_var - sqr(sqr(x_mean))) / sqr(x_var) - 3;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937 G;
+        G g;
+        D d(2, 3);
+        P p(.5, 2);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(d.min() <= v);
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = p.b() * std::tgamma(1 + 1/p.a());
+        double x_var = sqr(p.b()) * std::tgamma(1 + 2/p.a()) - sqr(x_mean);
+        double x_skew = (sqr(p.b())*p.b() * std::tgamma(1 + 3/p.a()) -
+                        3*x_mean*x_var - sqr(x_mean)*x_mean) /
+                        (std::sqrt(x_var)*x_var);
+        double x_kurtosis = (sqr(sqr(p.b())) * std::tgamma(1 + 4/p.a()) -
+                       4*x_skew*x_var*sqrt(x_var)*x_mean -
+                       6*sqr(x_mean)*x_var - sqr(sqr(x_mean))) / sqr(x_var) - 3;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs((skew - x_skew) / x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.03);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/get_param.pass.cpp
new file mode 100644
index 0000000..38b40c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type P;
+        P p(.125, .5);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/io.pass.cpp
new file mode 100644
index 0000000..89f7fba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// template <class CharT, class Traits, class RealType>
+// basic_ostream<CharT, Traits>&
+// operator<<(basic_ostream<CharT, Traits>& os,
+//            const weibull_distribution<RealType>& x);
+
+// template <class CharT, class Traits, class RealType>
+// basic_istream<CharT, Traits>&
+// operator>>(basic_istream<CharT, Traits>& is,
+//            weibull_distribution<RealType>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        D d1(7, 5);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/max.pass.cpp
new file mode 100644
index 0000000..4c7d258
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// result_type max() const;
+
+#include <random>
+
+#include <cassert>
+#include <cmath>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        D d(5, .25);
+        D::result_type m = d.max();
+        assert(m == INFINITY);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/min.pass.cpp
new file mode 100644
index 0000000..f33b750
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        D d(.5, .5);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_assign.pass.cpp
new file mode 100644
index 0000000..b2d86eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(.75, 6);
+        param_type p;
+        p = p0;
+        assert(p.a() == .75);
+        assert(p.b() == 6);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_copy.pass.cpp
new file mode 100644
index 0000000..0d98912
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p0(10, .125);
+        param_type p = p0;
+        assert(p.a() == 10);
+        assert(p.b() == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_ctor.pass.cpp
new file mode 100644
index 0000000..eab03af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.a() == 1);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10);
+        assert(p.a() == 10);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p(10, 5);
+        assert(p.a() == 10);
+        assert(p.b() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_eq.pass.cpp
new file mode 100644
index 0000000..40cfaa5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.75, .5);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        param_type p1(0.75, .5);
+        param_type p2(0.5, .5);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_types.pass.cpp
new file mode 100644
index 0000000..d5491ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/set_param.pass.cpp
new file mode 100644
index 0000000..b4de398
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution;
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::param_type P;
+        P p(0.25, 5.5);
+        D d(0.75, 4);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/types.pass.cpp
new file mode 100644
index 0000000..b258a80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.pois/rand.dist.pois.weibull/types.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class weibull_distribution
+// {
+// public:
+//     // types
+//     typedef RealType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::weibull_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::weibull_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/assign.pass.cpp
new file mode 100644
index 0000000..34295bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/assign.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// discrete_distribution& operator=(const discrete_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::discrete_distribution<> D;
+    double p[] = {2, 4, 1, 8};
+    D d1(p, p+4);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/copy.pass.cpp
new file mode 100644
index 0000000..0264f88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// discrete_distribution(const discrete_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::discrete_distribution<> D;
+    double p[] = {2, 4, 1, 8};
+    D d1(p, p+4);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_default.pass.cpp
new file mode 100644
index 0000000..92f566f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_default.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// discrete_distribution();
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        D d;
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_func.pass.cpp
new file mode 100644
index 0000000..c3a88af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_func.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template<class UnaryOperation>
+//     discrete_distribution(size_t nw, double xmin, double xmax,
+//                           UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double fw(double x)
+{
+    return x+1;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        D d(0, 0, 1, fw);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d(1, 0, 1, fw);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d(2, 0.5, 1.5, fw);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == .4375);
+        assert(p[1] == .5625);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d(4, 0, 2, fw);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 4);
+        assert(p[0] == .15625);
+        assert(p[1] == .21875);
+        assert(p[2] == .28125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_init.pass.cpp
new file mode 100644
index 0000000..245d548
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_init.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// discrete_distribution(initializer_list<double> wl);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {10};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {10, 30};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.25);
+        assert(p[1] == 0.75);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {30, 10};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {30, 0, 10};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {0, 30, 10};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0.75);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        D d = {0, 0, 10};
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0);
+        assert(p[2] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_iterator.pass.cpp
new file mode 100644
index 0000000..1cf9009
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_iterator.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template<class InputIterator>
+//     discrete_distribution(InputIterator firstW, InputIterator lastW);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {1};
+        D d(p0, p0);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {10};
+        D d(p0, p0+1);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {10, 30};
+        D d(p0, p0+2);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.25);
+        assert(p[1] == 0.75);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {30, 10};
+        D d(p0, p0+2);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {30, 0, 10};
+        D d(p0, p0+3);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {0, 30, 10};
+        D d(p0, p0+3);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0.75);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {0, 0, 10};
+        D d(p0, p0+3);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0);
+        assert(p[2] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_param.pass.cpp
new file mode 100644
index 0000000..2008bc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/ctor_param.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// explicit discrete_distribution(const param_type& parm);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {10, 30};
+        P pa(p0, p0+2);
+        D d(pa);
+        std::vector<double> p = d.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.25);
+        assert(p[1] == 0.75);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eq.pass.cpp
new file mode 100644
index 0000000..8a0bf75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eq.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// bool operator=(const discrete_distribution& x,
+//                const discrete_distribution& y);
+// bool operator!(const discrete_distribution& x,
+//                const discrete_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        D d1;
+        D d2;
+        assert(d1 == d2);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {1};
+        D d1(p0, p0+1);
+        D d2;
+        assert(d1 == d2);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {10, 30};
+        D d1(p0, p0+2);
+        D d2;
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eval.pass.cpp
new file mode 100644
index 0000000..d52e23e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eval.pass.cpp
@@ -0,0 +1,317 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void tests() {
+    typedef long long Frequency;
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        const int N = 100;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            assert((double)u[i]/N == prob[i]);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {.3};
+        D d(p0, p0+1);
+        const int N = 100;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            assert((double)u[i]/N == prob[i]);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {.75, .25};
+        D d(p0, p0+2);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {0, 1};
+        D d(p0, p0+2);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        assert((double)u[0]/N == prob[0]);
+        assert((double)u[1]/N == prob[1]);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {1, 0};
+        D d(p0, p0+2);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        assert((double)u[0]/N == prob[0]);
+        assert((double)u[1]/N == prob[1]);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {.3, .1, .6};
+        D d(p0, p0+3);
+        const int N = 10000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {0, 25, 75};
+        D d(p0, p0+3);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {25, 0, 75};
+        D d(p0, p0+3);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {25, 75, 0};
+        D d(p0, p0+3);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {0, 0, 1};
+        D d(p0, p0+3);
+        const int N = 100;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {0, 1, 0};
+        D d(p0, p0+3);
+        const int N = 100;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {1, 0, 0};
+        D d(p0, p0+3);
+        const int N = 100;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+    {
+        typedef std::discrete_distribution<T> D;
+        typedef std::minstd_rand G;
+        G g;
+        double p0[] = {33, 0, 0, 67};
+        D d(p0, p0+3);
+        const int N = 1000000;
+        std::vector<Frequency> u(static_cast<std::size_t>(d.max()+1));
+        assert(u.max_size() > static_cast<unsigned long long>(d.max()));
+        for (int i = 0; i < N; ++i)
+        {
+            typename D::result_type v = d(g);
+            assert(d.min() <= v && v <= d.max());
+            u[static_cast<std::size_t>(v)]++;
+        }
+        std::vector<double> prob = d.probabilities();
+        for (unsigned i = 0; i < u.size(); ++i)
+            if (prob[i] != 0)
+                assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+            else
+                assert(u[i] == 0);
+    }
+}
+
+int main(int, char**) {
+    tests<short>();
+    tests<int>();
+    tests<long>();
+    tests<long long>();
+
+    tests<unsigned short>();
+    tests<unsigned int>();
+    tests<unsigned long>();
+    tests<unsigned long long>();
+
+#if defined(_LIBCPP_VERSION) // extension
+    tests<int8_t>();
+    tests<uint8_t>();
+#if !defined(TEST_HAS_NO_INT128)
+    tests<__int128_t>();
+    tests<__uint128_t>();
+#endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eval_param.pass.cpp
new file mode 100644
index 0000000..f058e68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/eval_param.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        double p0[] = {.3, .1, .6};
+        P p(p0, p0+3);
+        const int N = 10000000;
+        std::vector<D::result_type> u(3);
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(0 <= v && v <= 2);
+            u[v]++;
+        }
+        std::vector<double> prob = p.probabilities();
+        for (int i = 0; i <= 2; ++i)
+            assert(std::abs((double)u[i]/N - prob[i]) / prob[i] < 0.001);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/get_param.pass.cpp
new file mode 100644
index 0000000..9d2af0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/get_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {.3, .1, .6};
+        P p(p0, p0+3);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/io.pass.cpp
new file mode 100644
index 0000000..7485dae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/io.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const discrete_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            discrete_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {.3, .1, .6};
+        D d1(p0, p0+3);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/max.pass.cpp
new file mode 100644
index 0000000..df7b6d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/max.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {.3, .1, .6};
+        D d(p0, p0+3);
+        assert(d.max() == 2);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {.3, .1, .6, .2};
+        D d(p0, p0+4);
+        assert(d.max() == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/min.pass.cpp
new file mode 100644
index 0000000..78066a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/min.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        double p0[] = {.3, .1, .6};
+        D d(p0, p0+3);
+        assert(d.min() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_assign.pass.cpp
new file mode 100644
index 0000000..82dd841
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type param_type;
+        double d0[] = {.3, .1, .6};
+        param_type p0(d0, d0+3);
+        param_type p;
+        p = p0;
+        assert(p == p0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_copy.pass.cpp
new file mode 100644
index 0000000..67c3d54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type param_type;
+        double d0[] = {.3, .1, .6};
+        param_type p0(d0, d0+3);
+        param_type p = p0;
+        assert(p == p0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_default.pass.cpp
new file mode 100644
index 0000000..aa51932
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_default.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// param_type(initializer_list<double> wl);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {1};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_func.pass.cpp
new file mode 100644
index 0000000..7ef936b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_func.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template<class UnaryOperation>
+//     param_type(size_t nw, double xmin, double xmax,
+//                           UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double fw(double x)
+{
+    return x+1;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa(0, 0, 1, fw);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa(1, 0, 1, fw);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa(2, 0.5, 1.5, fw);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == .4375);
+        assert(p[1] == .5625);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa(4, 0, 2, fw);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 4);
+        assert(p[0] == .15625);
+        assert(p[1] == .21875);
+        assert(p[2] == .28125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_init.pass.cpp
new file mode 100644
index 0000000..69ad6e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_init.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// param_type(initializer_list<double> wl);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {10};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {10, 30};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.25);
+        assert(p[1] == 0.75);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {30, 10};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {30, 0, 10};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {0, 30, 10};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0.75);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        P pa = {0, 0, 10};
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0);
+        assert(p[2] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_iterator.pass.cpp
new file mode 100644
index 0000000..8c206bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_ctor_iterator.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// template<class InputIterator>
+//     param_type(InputIterator firstW, InputIterator lastW);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {1};
+        P pa(p0, p0);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {10};
+        P pa(p0, p0+1);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 1);
+        assert(p[0] == 1);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {10, 30};
+        P pa(p0, p0+2);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.25);
+        assert(p[1] == 0.75);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {30, 10};
+        P pa(p0, p0+2);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 2);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {30, 0, 10};
+        P pa(p0, p0+3);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0.75);
+        assert(p[1] == 0);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {0, 30, 10};
+        P pa(p0, p0+3);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0.75);
+        assert(p[2] == 0.25);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double p0[] = {0, 0, 10};
+        P pa(p0, p0+3);
+        std::vector<double> p = pa.probabilities();
+        assert(p.size() == 3);
+        assert(p[0] == 0);
+        assert(p[1] == 0);
+        assert(p[2] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_eq.pass.cpp
new file mode 100644
index 0000000..082df23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_eq.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type param_type;
+        double p0[] = {30, 10};
+        param_type p1(p0, p0+2);
+        param_type p2(p0, p0+2);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type param_type;
+        double p0[] = {30, 10};
+        param_type p1(p0, p0+2);
+        param_type p2;
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_types.pass.cpp
new file mode 100644
index 0000000..94ef68a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/set_param.pass.cpp
new file mode 100644
index 0000000..a76eeae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/set_param.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::param_type P;
+        double d0[] = {.3, .1, .6};
+        P p(d0, d0+3);
+        D d;
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/types.pass.cpp
new file mode 100644
index 0000000..0571a48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.discrete/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class IntType = int>
+// class discrete_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::discrete_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, int>::value), "");
+    }
+    {
+        typedef std::discrete_distribution<long> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, long>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/assign.pass.cpp
new file mode 100644
index 0000000..1b0462b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/assign.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// piecewise_constant_distribution& operator=(const piecewise_constant_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    double p[] = {2, 4, 1, 8};
+    double b[] = {2, 4, 5, 8, 9};
+    D d1(b, b+5, p);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/copy.pass.cpp
new file mode 100644
index 0000000..7f7251f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/copy.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// piecewise_constant_distribution(const piecewise_constant_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    double p[] = {2, 4, 1, 8};
+    double b[] = {2, 4, 5, 8, 9};
+    D d1(b, b+5, p);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_default.pass.cpp
new file mode 100644
index 0000000..c99aa6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// piecewise_constant_distribution(initializer_list<double> wl);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d;
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_func.pass.cpp
new file mode 100644
index 0000000..a7a84d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_func.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template<class UnaryOperation>
+//     piecewise_constant_distribution(size_t nw, result_type xmin,
+//                                     result_type xmax, UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double fw(double x)
+{
+    return 2*x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d(0, 0, 1, fw);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d(1, 10, 12, fw);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 12);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 0.5);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d(2, 6, 14, fw);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 6);
+        assert(iv[1] == 10);
+        assert(iv[2] == 14);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 0.1);
+        assert(dn[1] == 0.15);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_init_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_init_func.pass.cpp
new file mode 100644
index 0000000..4166f6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_init_func.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// piecewise_constant_distribution(initializer_list<result_type> bl,
+//                                 UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double f(double x)
+{
+    return x*2;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d({}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d({12}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d({12, 14}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 12);
+        assert(iv[1] == 14);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 0.5);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d({5.5, 7.5, 11.5}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 5.5);
+        assert(iv[1] == 7.5);
+        assert(iv[2] == 11.5);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 0.203125);
+        assert(dn[1] == 0.1484375);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_iterator.pass.cpp
new file mode 100644
index 0000000..ea6e807
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_iterator.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template<class InputIterator>
+//     piecewise_constant_distribution(InputIteratorB firstB,
+//                                     InputIteratorB lastB,
+//                                     InputIteratorW firstW);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10};
+        double p[] = {12};
+        D d(b, b, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10};
+        double p[] = {12};
+        D d(b, b+1, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 15};
+        double p[] = {12};
+        D d(b, b+2, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1/5.);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 15, 16};
+        double p[] = {.25, .75};
+        D d(b, b+3, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        assert(iv[2] == 16);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == .25/5.);
+        assert(dn[1] == .75);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        D d(b, b+4, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 4);
+        assert(iv[0] == 10);
+        assert(iv[1] == 14);
+        assert(iv[2] == 16);
+        assert(iv[3] == 17);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == .0625);
+        assert(dn[1] == .3125);
+        assert(dn[2] == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_param.pass.cpp
new file mode 100644
index 0000000..3f9effa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/ctor_param.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// explicit piecewise_constant_distribution(const param_type& parm);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        P pa(b, b+4, p);
+        D d(pa);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 4);
+        assert(iv[0] == 10);
+        assert(iv[1] == 14);
+        assert(iv[2] == 16);
+        assert(iv[3] == 17);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == .0625);
+        assert(dn[1] == .3125);
+        assert(dn[2] == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eq.pass.cpp
new file mode 100644
index 0000000..01c045a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eq.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// bool operator=(const piecewise_constant_distribution& x,
+//                const piecewise_constant_distribution& y);
+// bool operator!(const piecewise_constant_distribution& x,
+//                const piecewise_constant_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        D d1;
+        D d2;
+        assert(d1 == d2);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        D d1(b, b+4, p);
+        D d2(b, b+4, p);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        D d1(b, b+4, p);
+        D d2;
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eval.pass.cpp
new file mode 100644
index 0000000..c24d1a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eval.pass.cpp
@@ -0,0 +1,743 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <vector>
+#include <iterator>
+#include <numeric>
+#include <algorithm>   // for sort
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x*x;
+}
+
+void
+test1()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {25, 62.5, 12.5};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test2()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {0, 62.5, 12.5};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test3()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {25, 0, 12.5};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test4()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {25, 62.5, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test5()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {25, 0, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test6()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {0, 25, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test7()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {0, 0, 1};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test8()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16};
+    double p[] = {75, 25};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test9()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16};
+    double p[] = {0, 25};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test10()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16};
+    double p[] = {1, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+void
+test11()
+{
+    typedef std::piecewise_constant_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14};
+    double p[] = {1};
+    const size_t Np = sizeof(p) / sizeof(p[0]);
+    D d(b, b+Np+1, p);
+    const int N = 100000;
+    std::vector<D::result_type> u;
+    for (int i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::vector<double> prob(std::begin(p), std::end(p));
+    double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+    for (std::size_t i = 0; i < prob.size(); ++i)
+        prob[i] /= s;
+    std::sort(u.begin(), u.end());
+    for (std::size_t i = 0; i < Np; ++i)
+    {
+        typedef std::vector<D::result_type>::iterator I;
+        I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+        I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+        const size_t Ni = ub - lb;
+        if (prob[i] == 0)
+            assert(Ni == 0);
+        else
+        {
+            assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+            double mean = std::accumulate(lb, ub, 0.0) / Ni;
+            double var = 0;
+            double skew = 0;
+            double kurtosis = 0;
+            for (I j = lb; j != ub; ++j)
+            {
+                double dbl = (*j - mean);
+                double d2 = sqr(dbl);
+                var += d2;
+                skew += dbl * d2;
+                kurtosis += d2 * d2;
+            }
+            var /= Ni;
+            double dev = std::sqrt(var);
+            skew /= Ni * dev * var;
+            kurtosis /= Ni * var * var;
+            kurtosis -= 3;
+            double x_mean = (b[i+1] + b[i]) / 2;
+            double x_var = sqr(b[i+1] - b[i]) / 12;
+            double x_skew = 0;
+            double x_kurtosis = -6./5;
+            assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+            assert(std::abs((var - x_var) / x_var) < 0.01);
+            assert(std::abs(skew - x_skew) < 0.01);
+            assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+    test7();
+    test8();
+    test9();
+    test10();
+    test11();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eval_param.pass.cpp
new file mode 100644
index 0000000..d9f2628
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/eval_param.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <algorithm>
+#include <vector>
+#include <iterator>
+#include <numeric>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x*x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937_64 G;
+        G g;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d;
+        P pa(b, b+Np+1, p);
+        const int N = 1000000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, pa);
+            assert(10 <= v && v < 17);
+            u.push_back(v);
+        }
+        std::vector<double> prob(std::begin(p), std::end(p));
+        double s = std::accumulate(prob.begin(), prob.end(), 0.0);
+        for (std::size_t i = 0; i < prob.size(); ++i)
+            prob[i] /= s;
+        std::sort(u.begin(), u.end());
+        for (std::size_t i = 0; i < Np; ++i)
+        {
+            typedef std::vector<D::result_type>::iterator I;
+            I lb = std::lower_bound(u.begin(), u.end(), b[i]);
+            I ub = std::lower_bound(u.begin(), u.end(), b[i+1]);
+            const size_t Ni = ub - lb;
+            if (prob[i] == 0)
+                assert(Ni == 0);
+            else
+            {
+                assert(std::abs((double)Ni/N - prob[i]) / prob[i] < .01);
+                double mean = std::accumulate(lb, ub, 0.0) / Ni;
+                double var = 0;
+                double skew = 0;
+                double kurtosis = 0;
+                for (I j = lb; j != ub; ++j)
+                {
+                    double dbl = (*j - mean);
+                    double d2 = sqr(dbl);
+                    var += d2;
+                    skew += dbl * d2;
+                    kurtosis += d2 * d2;
+                }
+                var /= Ni;
+                double dev = std::sqrt(var);
+                skew /= Ni * dev * var;
+                kurtosis /= Ni * var * var;
+                kurtosis -= 3;
+                double x_mean = (b[i+1] + b[i]) / 2;
+                double x_var = sqr(b[i+1] - b[i]) / 12;
+                double x_skew = 0;
+                double x_kurtosis = -6./5;
+                assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+                assert(std::abs((var - x_var) / x_var) < 0.01);
+                assert(std::abs(skew - x_skew) < 0.01);
+                assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+            }
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/get_param.pass.cpp
new file mode 100644
index 0000000..db7c0d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/get_param.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        P pa(b, b+Np+1, p);
+        D d(pa);
+        assert(d.param() == pa);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/io.pass.cpp
new file mode 100644
index 0000000..72a66c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/io.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const piecewise_constant_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            piecewise_constant_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d1(b, b+Np+1, p);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/max.pass.cpp
new file mode 100644
index 0000000..fe0c23f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d(b, b+Np+1, p);
+        assert(d.max() == 17);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/min.pass.cpp
new file mode 100644
index 0000000..533f3e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/min.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d(b, b+Np+1, p);
+        assert(d.min() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_assign.pass.cpp
new file mode 100644
index 0000000..a97708d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        P p0(b, b+Np+1, p);
+        P p1;
+        p1 = p0;
+        assert(p1 == p0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_copy.pass.cpp
new file mode 100644
index 0000000..80b442a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        P p0(b, b+Np+1, p);
+        P p1 = p0;
+        assert(p1 == p0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_default.pass.cpp
new file mode 100644
index 0000000..0500bc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_default.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// param_type();
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa;
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_func.pass.cpp
new file mode 100644
index 0000000..c87aee6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_func.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template<class UnaryOperation>
+//     param_type(size_t nw, double xmin, double xmax,
+//                           UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double fw(double x)
+{
+    return 2*x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa(0, 0, 1, fw);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa(1, 10, 12, fw);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 12);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 0.5);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa(2, 6, 14, fw);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 6);
+        assert(iv[1] == 10);
+        assert(iv[2] == 14);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 0.1);
+        assert(dn[1] == 0.15);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_init_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_init_func.pass.cpp
new file mode 100644
index 0000000..5251ab7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_init_func.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// param_type(initializer_list<result_type> bl, UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double f(double x)
+{
+    return x*2;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa({}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa({12}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa({12, 14}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 12);
+        assert(iv[1] == 14);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 0.5);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        P pa({5.5, 7.5, 11.5}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 5.5);
+        assert(iv[1] == 7.5);
+        assert(iv[2] == 11.5);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 0.203125);
+        assert(dn[1] == 0.1484375);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_iterator.pass.cpp
new file mode 100644
index 0000000..baf6108
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_ctor_iterator.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// template<class InputIterator>
+//     param_type(InputIteratorB firstB, InputIteratorB lastB,
+//                InputIteratorW firstW);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10};
+        double p[] = {12};
+        P pa(b, b, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10};
+        double p[] = {12};
+        P pa(b, b+1, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 15};
+        double p[] = {12};
+        P pa(b, b+2, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 1);
+        assert(dn[0] == 1/5.);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 15, 16};
+        double p[] = {.25, .75};
+        P pa(b, b+3, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        assert(iv[2] == 16);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == .25/5.);
+        assert(dn[1] == .75);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        P pa(b, b+4, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 4);
+        assert(iv[0] == 10);
+        assert(iv[1] == 14);
+        assert(iv[2] == 16);
+        assert(iv[3] == 17);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == .0625);
+        assert(dn[1] == .3125);
+        assert(dn[2] == .125);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_eq.pass.cpp
new file mode 100644
index 0000000..1c0de16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_eq.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        P p1(b, b+4, p);
+        P p2(b, b+4, p);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        P p1(b, b+3, p);
+        P p2(b, b+4, p);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_types.pass.cpp
new file mode 100644
index 0000000..ef8494c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/set_param.pass.cpp
new file mode 100644
index 0000000..0cc0142
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/set_param.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5};
+        P pa(b, b+4, p);
+        D d;
+        d.param(pa);
+        assert(d.param() == pa);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/types.pass.cpp
new file mode 100644
index 0000000..f0d3772
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.pconst/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_constant_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_constant_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::piecewise_constant_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/assign.pass.cpp
new file mode 100644
index 0000000..59740ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/assign.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// piecewise_linear_distribution& operator=(const piecewise_linear_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    double p[] = {2, 4, 1, 8, 3};
+    double b[] = {2, 4, 5, 8, 9};
+    D d1(b, b+5, p);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/copy.pass.cpp
new file mode 100644
index 0000000..8cd000a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/copy.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// piecewise_linear_distribution(const piecewise_linear_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    double p[] = {2, 4, 1, 8, 2};
+    double b[] = {2, 4, 5, 8, 9};
+    D d1(b, b+5, p);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_default.pass.cpp
new file mode 100644
index 0000000..6d4ffc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_default.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// piecewise_linear_distribution(initializer_list<double> wl);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d;
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_func.pass.cpp
new file mode 100644
index 0000000..edcd863
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_func.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template<class UnaryOperation>
+//     piecewise_linear_distribution(size_t nw, result_type xmin,
+//                                     result_type xmax, UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double fw(double x)
+{
+    return 2*x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d(0, 0, 1, fw);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 0);
+        assert(dn[1] == 2);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d(1, 10, 12, fw);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 12);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 20./44);
+        assert(dn[1] == 24./44);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d(2, 6, 14, fw);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 6);
+        assert(iv[1] == 10);
+        assert(iv[2] == 14);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == 0.075);
+        assert(dn[1] == 0.125);
+        assert(dn[2] == 0.175);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_init_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_init_func.pass.cpp
new file mode 100644
index 0000000..1e2523b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_init_func.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// piecewise_linear_distribution(initializer_list<result_type> bl,
+//                                 UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double f(double x)
+{
+    return x*2;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d({}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d({12}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d({10, 12}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 12);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 20./44);
+        assert(dn[1] == 24./44);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d({6, 10, 14}, f);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 6);
+        assert(iv[1] == 10);
+        assert(iv[2] == 14);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == 0.075);
+        assert(dn[1] == 0.125);
+        assert(dn[2] == 0.175);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_iterator.pass.cpp
new file mode 100644
index 0000000..24f7d4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_iterator.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template<class InputIterator>
+//     piecewise_linear_distribution(InputIteratorB firstB,
+//                                     InputIteratorB lastB,
+//                                     InputIteratorW firstW);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10};
+        double p[] = {12};
+        D d(b, b, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10};
+        double p[] = {12};
+        D d(b, b+1, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 15};
+        double p[] = {20, 20};
+        D d(b, b+2, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1/5.);
+        assert(dn[1] == 1/5.);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 15, 16};
+        double p[] = {.25, .75, .25};
+        D d(b, b+3, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        assert(iv[2] == 16);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == .25/3);
+        assert(dn[1] == .75/3);
+        assert(dn[2] == .25/3);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {0, 1, 1, 0};
+        D d(b, b+4, p);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 4);
+        assert(iv[0] == 10);
+        assert(iv[1] == 14);
+        assert(iv[2] == 16);
+        assert(iv[3] == 17);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 4);
+        assert(dn[0] == 0);
+        assert(dn[1] == 1/4.5);
+        assert(dn[2] == 1/4.5);
+        assert(dn[3] == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_param.pass.cpp
new file mode 100644
index 0000000..6d6712f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/ctor_param.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// explicit piecewise_linear_distribution(const param_type& parm);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        P pa(b, b+4, p);
+        D d(pa);
+        std::vector<double> iv = d.intervals();
+        assert(iv.size() == 4);
+        assert(iv[0] == 10);
+        assert(iv[1] == 14);
+        assert(iv[2] == 16);
+        assert(iv[3] == 17);
+        std::vector<double> dn = d.densities();
+        assert(dn.size() == 4);
+        assert(dn[0] == 25/256.25);
+        assert(dn[1] == 62.5/256.25);
+        assert(dn[2] == 12.5/256.25);
+        assert(dn[3] == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eq.pass.cpp
new file mode 100644
index 0000000..02ff3e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eq.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// bool operator=(const piecewise_linear_distribution& x,
+//                const piecewise_linear_distribution& y);
+// bool operator!(const piecewise_linear_distribution& x,
+//                const piecewise_linear_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        D d1;
+        D d2;
+        assert(d1 == d2);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 1};
+        D d1(b, b+4, p);
+        D d2(b, b+4, p);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        D d1(b, b+4, p);
+        D d2;
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eval.pass.cpp
new file mode 100644
index 0000000..ea8924e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eval.pass.cpp
@@ -0,0 +1,367 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <algorithm>
+#include <vector>
+#include <iterator>
+#include <numeric>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x*x;
+}
+
+double
+f(double x, double a, double m, double b, double c)
+{
+    return a + m*(sqr(x) - sqr(b))/2 + c*(x-b);
+}
+
+void
+test1()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {0, 1, 1, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (size_t i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::sort(u.begin(), u.end());
+    int kp = -1;
+    double a = std::numeric_limits<double>::quiet_NaN();
+    double m = std::numeric_limits<double>::quiet_NaN();
+    double bk = std::numeric_limits<double>::quiet_NaN();
+    double c = std::numeric_limits<double>::quiet_NaN();
+    std::vector<double> areas(Np);
+    double S = 0;
+    for (size_t i = 0; i < areas.size(); ++i)
+    {
+        areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+        S += areas[i];
+    }
+    for (size_t i = 0; i < areas.size(); ++i)
+        areas[i] /= S;
+    for (size_t i = 0; i < Np+1; ++i)
+        p[i] /= S;
+    for (size_t i = 0; i < N; ++i)
+    {
+        int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+        if (k != kp)
+        {
+            a = 0;
+            for (int j = 0; j < k; ++j)
+                a += areas[j];
+            m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+            bk = b[k];
+            c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+            kp = k;
+        }
+        assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+    }
+}
+
+void
+test2()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {0, 0, 1, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (size_t i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::sort(u.begin(), u.end());
+    int kp = -1;
+    double a = std::numeric_limits<double>::quiet_NaN();
+    double m = std::numeric_limits<double>::quiet_NaN();
+    double bk = std::numeric_limits<double>::quiet_NaN();
+    double c = std::numeric_limits<double>::quiet_NaN();
+    std::vector<double> areas(Np);
+    double S = 0;
+    for (size_t i = 0; i < areas.size(); ++i)
+    {
+        areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+        S += areas[i];
+    }
+    for (size_t i = 0; i < areas.size(); ++i)
+        areas[i] /= S;
+    for (size_t i = 0; i < Np+1; ++i)
+        p[i] /= S;
+    for (size_t i = 0; i < N; ++i)
+    {
+        int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+        if (k != kp)
+        {
+            a = 0;
+            for (int j = 0; j < k; ++j)
+                a += areas[j];
+            m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+            bk = b[k];
+            c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+            kp = k;
+        }
+        assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+    }
+}
+
+void
+test3()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {1, 0, 0, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+    D d(b, b+Np+1, p);
+    const size_t N = 1000000;
+    std::vector<D::result_type> u;
+    for (size_t i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::sort(u.begin(), u.end());
+    int kp = -1;
+    double a = std::numeric_limits<double>::quiet_NaN();
+    double m = std::numeric_limits<double>::quiet_NaN();
+    double bk = std::numeric_limits<double>::quiet_NaN();
+    double c = std::numeric_limits<double>::quiet_NaN();
+    std::vector<double> areas(Np);
+    double S = 0;
+    for (size_t i = 0; i < areas.size(); ++i)
+    {
+        areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+        S += areas[i];
+    }
+    for (size_t i = 0; i < areas.size(); ++i)
+        areas[i] /= S;
+    for (size_t i = 0; i < Np+1; ++i)
+        p[i] /= S;
+    for (size_t i = 0; i < N; ++i)
+    {
+        int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+        if (k != kp)
+        {
+            a = 0;
+            for (int j = 0; j < k; ++j)
+                a += areas[j];
+            m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+            bk = b[k];
+            c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+            kp = k;
+        }
+        assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+    }
+}
+
+void
+test4()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16};
+    double p[] = {0, 1, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (size_t i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::sort(u.begin(), u.end());
+    int kp = -1;
+    double a = std::numeric_limits<double>::quiet_NaN();
+    double m = std::numeric_limits<double>::quiet_NaN();
+    double bk = std::numeric_limits<double>::quiet_NaN();
+    double c = std::numeric_limits<double>::quiet_NaN();
+    std::vector<double> areas(Np);
+    double S = 0;
+    for (size_t i = 0; i < areas.size(); ++i)
+    {
+        areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+        S += areas[i];
+    }
+    for (size_t i = 0; i < areas.size(); ++i)
+        areas[i] /= S;
+    for (size_t i = 0; i < Np+1; ++i)
+        p[i] /= S;
+    for (size_t i = 0; i < N; ++i)
+    {
+        int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+        if (k != kp)
+        {
+            a = 0;
+            for (int j = 0; j < k; ++j)
+                a += areas[j];
+            assert(k < static_cast<int>(Np));
+            m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+            bk = b[k];
+            c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+            kp = k;
+        }
+        assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+    }
+}
+
+void
+test5()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14};
+    double p[] = {1, 1};
+    const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (size_t i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::sort(u.begin(), u.end());
+    int kp = -1;
+    double a = std::numeric_limits<double>::quiet_NaN();
+    double m = std::numeric_limits<double>::quiet_NaN();
+    double bk = std::numeric_limits<double>::quiet_NaN();
+    double c = std::numeric_limits<double>::quiet_NaN();
+    std::vector<double> areas(Np);
+    double S = 0;
+    for (size_t i = 0; i < areas.size(); ++i)
+    {
+        assert(i < Np);
+        areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+        S += areas[i];
+    }
+    for (size_t i = 0; i < areas.size(); ++i)
+        areas[i] /= S;
+    for (size_t i = 0; i < Np+1; ++i)
+        p[i] /= S;
+    for (size_t i = 0; i < N; ++i)
+    {
+        int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+        if (k != kp)
+        {
+            a = 0;
+            for (int j = 0; j < k; ++j)
+                a += areas[j];
+            assert(k < static_cast<int>(Np));
+            m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+            bk = b[k];
+            c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+            kp = k;
+        }
+        assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+    }
+}
+
+void
+test6()
+{
+    typedef std::piecewise_linear_distribution<> D;
+    typedef std::mt19937_64 G;
+    G g;
+    double b[] = {10, 14, 16, 17};
+    double p[] = {25, 62.5, 12.5, 0};
+    const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+    D d(b, b+Np+1, p);
+    const int N = 1000000;
+    std::vector<D::result_type> u;
+    for (size_t i = 0; i < N; ++i)
+    {
+        D::result_type v = d(g);
+        assert(d.min() <= v && v < d.max());
+        u.push_back(v);
+    }
+    std::sort(u.begin(), u.end());
+    int kp = -1;
+    double a = std::numeric_limits<double>::quiet_NaN();
+    double m = std::numeric_limits<double>::quiet_NaN();
+    double bk = std::numeric_limits<double>::quiet_NaN();
+    double c = std::numeric_limits<double>::quiet_NaN();
+    std::vector<double> areas(Np);
+    double S = 0;
+    for (size_t i = 0; i < areas.size(); ++i)
+    {
+        areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+        S += areas[i];
+    }
+    for (size_t i = 0; i < areas.size(); ++i)
+        areas[i] /= S;
+    for (size_t i = 0; i < Np+1; ++i)
+        p[i] /= S;
+    for (size_t i = 0; i < N; ++i)
+    {
+        int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+        if (k != kp)
+        {
+            a = 0;
+            for (int j = 0; j < k; ++j)
+                a += areas[j];
+            m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+            bk = b[k];
+            c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+            kp = k;
+        }
+        assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eval_param.pass.cpp
new file mode 100644
index 0000000..9c9365f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/eval_param.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <vector>
+#include <iterator>
+#include <numeric>
+#include <algorithm>   // for sort
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x*x;
+}
+
+double
+f(double x, double a, double m, double b, double c)
+{
+    return a + m*(sqr(x) - sqr(b))/2 + c*(x-b);
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        typedef std::mt19937_64 G;
+        G g;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        const size_t Np = sizeof(p) / sizeof(p[0]) - 1;
+        D d;
+        P pa(b, b+Np+1, p);
+        const size_t N = 1000000;
+        std::vector<D::result_type> u;
+        for (size_t i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, pa);
+            assert(10 <= v && v < 17);
+            u.push_back(v);
+        }
+        std::sort(u.begin(), u.end());
+        int kp = -1;
+        double a = std::numeric_limits<double>::quiet_NaN();
+        double m = std::numeric_limits<double>::quiet_NaN();
+        double bk = std::numeric_limits<double>::quiet_NaN();
+        double c = std::numeric_limits<double>::quiet_NaN();
+        std::vector<double> areas(Np);
+        double S = 0;
+        for (size_t i = 0; i < areas.size(); ++i)
+        {
+            areas[i] = (p[i]+p[i+1])*(b[i+1]-b[i])/2;
+            S += areas[i];
+        }
+        for (size_t i = 0; i < areas.size(); ++i)
+            areas[i] /= S;
+        for (size_t i = 0; i < Np+1; ++i)
+            p[i] /= S;
+        for (size_t i = 0; i < N; ++i)
+        {
+            int k = std::lower_bound(b, b+Np+1, u[i]) - b - 1;
+            if (k != kp)
+            {
+                a = 0;
+                for (int j = 0; j < k; ++j)
+                    a += areas[j];
+                m = (p[k+1] - p[k]) / (b[k+1] - b[k]);
+                bk = b[k];
+                c = (b[k+1]*p[k] - b[k]*p[k+1]) / (b[k+1] - b[k]);
+                kp = k;
+            }
+            assert(std::abs(f(u[i], a, m, bk, c) - double(i)/N) < .001);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/get_param.pass.cpp
new file mode 100644
index 0000000..b9450c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/get_param.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 10};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        P pa(b, b+Np, p);
+        D d(pa);
+        assert(d.param() == pa);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/io.pass.cpp
new file mode 100644
index 0000000..e3983b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/io.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const piecewise_linear_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            piecewise_linear_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 25};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d1(b, b+Np, p);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/max.pass.cpp
new file mode 100644
index 0000000..e0c6857
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/max.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d(b, b+Np, p);
+        assert(d.max() == 17);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/min.pass.cpp
new file mode 100644
index 0000000..a0ec322
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/min.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        D d(b, b+Np, p);
+        assert(d.min() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_assign.pass.cpp
new file mode 100644
index 0000000..47b5c28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 2};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        P p0(b, b+Np, p);
+        P p1;
+        p1 = p0;
+        assert(p1 == p0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_copy.pass.cpp
new file mode 100644
index 0000000..b88d9c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_copy.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 5};
+        const size_t Np = sizeof(p) / sizeof(p[0]);
+        P p0(b, b+Np, p);
+        P p1 = p0;
+        assert(p1 == p0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_default.pass.cpp
new file mode 100644
index 0000000..9f63e0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// param_type();
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa;
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_func.pass.cpp
new file mode 100644
index 0000000..855dd96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_func.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template<class UnaryOperation>
+//     param_type(size_t nw, double xmin, double xmax,
+//                           UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double fw(double x)
+{
+    return 2*x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa(0, 0, 1, fw);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 0);
+        assert(dn[1] == 2);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa(1, 10, 12, fw);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 12);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 20./44);
+        assert(dn[1] == 24./44);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa(2, 6, 14, fw);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 6);
+        assert(iv[1] == 10);
+        assert(iv[2] == 14);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == 0.075);
+        assert(dn[1] == 0.125);
+        assert(dn[2] == 0.175);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_init_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_init_func.pass.cpp
new file mode 100644
index 0000000..6e72239
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_init_func.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// param_type(initializer_list<result_type> bl, UnaryOperation fw);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+double f(double x)
+{
+    return x*2;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa({}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa({12}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa({10, 12}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 12);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 20./44);
+        assert(dn[1] == 24./44);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        P pa({6, 10, 14}, f);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 6);
+        assert(iv[1] == 10);
+        assert(iv[2] == 14);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == 0.075);
+        assert(dn[1] == 0.125);
+        assert(dn[2] == 0.175);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_iterator.pass.cpp
new file mode 100644
index 0000000..04ded2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_ctor_iterator.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// template<class InputIterator>
+//     param_type(InputIteratorB firstB, InputIteratorB lastB,
+//                InputIteratorW firstW);
+
+#include <random>
+
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10};
+        double p[] = {12};
+        P pa(b, b, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10};
+        double p[] = {12};
+        P pa(b, b+1, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 0);
+        assert(iv[1] == 1);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1);
+        assert(dn[1] == 1);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 15};
+        double p[] = {12, 12};
+        P pa(b, b+2, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 2);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 2);
+        assert(dn[0] == 1/5.);
+        assert(dn[1] == 1/5.);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 15, 16};
+        double p[] = {.25, .75, .25};
+        P pa(b, b+3, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 3);
+        assert(iv[0] == 10);
+        assert(iv[1] == 15);
+        assert(iv[2] == 16);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 3);
+        assert(dn[0] == .25/3);
+        assert(dn[1] == .75/3);
+        assert(dn[2] == .25/3);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {0, 1, 1, 0};
+        P pa(b, b+4, p);
+        std::vector<double> iv = pa.intervals();
+        assert(iv.size() == 4);
+        assert(iv[0] == 10);
+        assert(iv[1] == 14);
+        assert(iv[2] == 16);
+        assert(iv[3] == 17);
+        std::vector<double> dn = pa.densities();
+        assert(dn.size() == 4);
+        assert(dn[0] == 0);
+        assert(dn[1] == 1/4.5);
+        assert(dn[2] == 1/4.5);
+        assert(dn[3] == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_eq.pass.cpp
new file mode 100644
index 0000000..ee05629
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_eq.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        P p1(b, b+4, p);
+        P p2(b, b+4, p);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        P p1(b, b+3, p);
+        P p2(b, b+4, p);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_types.pass.cpp
new file mode 100644
index 0000000..6797666
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/set_param.pass.cpp
new file mode 100644
index 0000000..49c3361
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/set_param.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::param_type P;
+        double b[] = {10, 14, 16, 17};
+        double p[] = {25, 62.5, 12.5, 0};
+        P pa(b, b+4, p);
+        D d;
+        d.param(pa);
+        assert(d.param() == pa);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/types.pass.cpp
new file mode 100644
index 0000000..e1b182b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.samp/rand.dist.samp.plinear/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class piecewise_linear_distribution
+// {
+//     typedef bool result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::piecewise_linear_distribution<> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, double>::value), "");
+    }
+    {
+        typedef std::piecewise_linear_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/assign.pass.cpp
new file mode 100644
index 0000000..f266df6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// uniform_int_distribution& operator=(const uniform_int_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::uniform_int_distribution<long> D;
+    D d1(2, 5);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/copy.pass.cpp
new file mode 100644
index 0000000..f39d34d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// uniform_int_distribution(const uniform_int_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::uniform_int_distribution<long> D;
+    D d1(2, 5);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/ctor_int_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/ctor_int_int.pass.cpp
new file mode 100644
index 0000000..52685d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/ctor_int_int.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// explicit uniform_int_distribution(IntType a = 0,
+//                                   IntType b = numeric_limits<IntType>::max()); // before C++20
+// uniform_int_distribution() : uniform_int_distribution(0) {}                    // C++20
+// explicit uniform_int_distribution(IntType a,
+//                                   IntType b = numeric_limits<IntType>::max()); // C++20
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::uniform_int_distribution<> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d;
+        assert(d.a() == 0);
+        assert(d.b() == std::numeric_limits<int>::max());
+    }
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d(-6);
+        assert(d.a() == -6);
+        assert(d.b() == std::numeric_limits<int>::max());
+    }
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d(-6, 106);
+        assert(d.a() == -6);
+        assert(d.b() == 106);
+    }
+
+    test_implicit<int>();
+    test_implicit<long>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/ctor_param.pass.cpp
new file mode 100644
index 0000000..e6eae47
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// explicit uniform_int_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        typedef D::param_type P;
+        P p(3, 8);
+        D d(p);
+        assert(d.a() == 3);
+        assert(d.b() == 8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eq.pass.cpp
new file mode 100644
index 0000000..09794a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// bool operator=(const uniform_int_distribution& x,
+//                const uniform_int_distribution& y);
+// bool operator!(const uniform_int_distribution& x,
+//                const uniform_int_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d1(3, 8);
+        D d2(3, 8);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d1(3, 8);
+        D d2(3, 9);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eval.pass.cpp
new file mode 100644
index 0000000..d636c4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eval.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <climits>
+#include <cstddef>
+#include <limits>
+#include <numeric>
+#include <vector>
+
+#include "test_macros.h"
+
+// The __int128 conversions to/from floating point crash on MinGW on x86_64.
+// This is fixed in Clang 14 by https://reviews.llvm.org/D110413.
+#if defined(__x86_64__) && defined(__MINGW32__) && defined(__clang_major__) && __clang_major__ < 14
+ #define TEST_BUGGY_I128_FP
+#endif
+
+template <class T>
+T sqr(T x) {
+    return x * x;
+}
+
+template <class ResultType, class EngineType>
+void test_statistics(ResultType a, ResultType b) {
+    ASSERT_SAME_TYPE(typename std::uniform_int_distribution<ResultType>::result_type, ResultType);
+
+    EngineType g;
+    std::uniform_int_distribution<ResultType> dist(a, b);
+    assert(dist.a() == a);
+    assert(dist.b() == b);
+    std::vector<ResultType> u;
+    for (int i = 0; i < 10000; ++i) {
+        ResultType v = dist(g);
+        assert(a <= v && v <= b);
+        u.push_back(v);
+    }
+
+    // Quick check: The chance of getting *no* hits in any given tenth of the range
+    // is (0.9)^10000, or "ultra-astronomically low."
+    bool bottom_tenth = false;
+    bool top_tenth = false;
+    for (std::size_t i = 0; i < u.size(); ++i) {
+        bottom_tenth = bottom_tenth || (u[i] <= (a + (b / 10) - (a / 10)));
+        top_tenth = top_tenth || (u[i] >= (b - (b / 10) + (a / 10)));
+    }
+    assert(bottom_tenth);  // ...is populated
+    assert(top_tenth);  // ...is populated
+
+    // Now do some more involved statistical math.
+    double mean = std::accumulate(u.begin(), u.end(), 0.0) / u.size();
+    double var = 0;
+    double skew = 0;
+    double kurtosis = 0;
+    for (std::size_t i = 0; i < u.size(); ++i) {
+        double dbl = (u[i] - mean);
+        double d2 = dbl * dbl;
+        var += d2;
+        skew += dbl * d2;
+        kurtosis += d2 * d2;
+    }
+    var /= u.size();
+    double dev = std::sqrt(var);
+    skew /= u.size() * dev * var;
+    kurtosis /= u.size() * var * var;
+
+    double expected_mean = double(a) + double(b)/2 - double(a)/2;
+    double expected_var = (sqr(double(b) - double(a) + 1) - 1) / 12;
+
+    double range = double(b) - double(a) + 1.0;
+    assert(range > range / 10);  // i.e., it's not infinity
+
+    assert(std::abs(mean - expected_mean) < range / 100);
+    assert(std::abs(var - expected_var) < expected_var / 50);
+    assert(-0.1 < skew && skew < 0.1);
+    assert(1.6 < kurtosis && kurtosis < 2.0);
+}
+
+template <class ResultType, class EngineType>
+void test_statistics() {
+    test_statistics<ResultType, EngineType>(0, std::numeric_limits<ResultType>::max());
+}
+
+int main(int, char**)
+{
+    test_statistics<int, std::minstd_rand0>();
+    test_statistics<int, std::minstd_rand>();
+    test_statistics<int, std::mt19937>();
+    test_statistics<int, std::mt19937_64>();
+    test_statistics<int, std::ranlux24_base>();
+    test_statistics<int, std::ranlux48_base>();
+    test_statistics<int, std::ranlux24>();
+    test_statistics<int, std::ranlux48>();
+    test_statistics<int, std::knuth_b>();
+    test_statistics<int, std::minstd_rand0>(-6, 106);
+    test_statistics<int, std::minstd_rand>(5, 100);
+
+    test_statistics<short, std::minstd_rand0>();
+    test_statistics<int, std::minstd_rand0>();
+    test_statistics<long, std::minstd_rand0>();
+    test_statistics<long long, std::minstd_rand0>();
+
+    test_statistics<unsigned short, std::minstd_rand0>();
+    test_statistics<unsigned int, std::minstd_rand0>();
+    test_statistics<unsigned long, std::minstd_rand0>();
+    test_statistics<unsigned long long, std::minstd_rand0>();
+
+    test_statistics<short, std::minstd_rand0>(SHRT_MIN, SHRT_MAX);
+
+#if defined(_LIBCPP_VERSION) // extension
+    test_statistics<int8_t, std::minstd_rand0>();
+    test_statistics<uint8_t, std::minstd_rand0>();
+
+#if !defined(TEST_HAS_NO_INT128) && !defined(TEST_BUGGY_I128_FP)
+    test_statistics<__int128_t, std::minstd_rand0>();
+    test_statistics<__uint128_t, std::minstd_rand0>();
+
+    test_statistics<__int128_t, std::minstd_rand0>(-100, 900);
+    test_statistics<__int128_t, std::minstd_rand0>(0, UINT64_MAX);
+    test_statistics<__int128_t, std::minstd_rand0>(std::numeric_limits<__int128_t>::min(), std::numeric_limits<__int128_t>::max());
+    test_statistics<__uint128_t, std::minstd_rand0>(0, UINT64_MAX);
+#endif
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eval_param.pass.cpp
new file mode 100644
index 0000000..234cd36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/eval_param.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        typedef std::minstd_rand G;
+        typedef D::param_type P;
+        G g;
+        D d(5, 100);
+        P p(-10, 20);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(p.a() <= v && v <= p.b());
+            u.push_back(v);
+        }
+        double mean = std::accumulate(u.begin(), u.end(),
+                                              double(0)) / u.size();
+        double var = 0;
+        double skew = 0;
+        double kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            double dbl = (u[i] - mean);
+            double d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        double dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        double x_mean = ((double)p.a() + p.b()) / 2;
+        double x_var = (sqr((double)p.b() - p.a() + 1) - 1) / 12;
+        double x_skew = 0;
+        double x_kurtosis = -6. * (sqr((double)p.b() - p.a() + 1) + 1) /
+                            (5. * (sqr((double)p.b() - p.a() + 1) - 1));
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/get_param.pass.cpp
new file mode 100644
index 0000000..da7230e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        typedef D::param_type P;
+        P p(3, 8);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/int128.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/int128.pass.cpp
new file mode 100644
index 0000000..9b52205
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/int128.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+
+#ifndef TEST_HAS_NO_INT128
+
+  // Test that values outside of the 64-bit range can be produced.
+  {
+    std::minstd_rand0 e;
+    std::uniform_int_distribution<__int128_t> d;
+    assert(d.min() == 0 && d.max() == std::numeric_limits<__int128_t>::max());
+    bool all_in_64bit_range = true;
+    for (int i = 0; i < 100; ++i) {
+      __int128_t n = d(e);
+      all_in_64bit_range = all_in_64bit_range && (n <= UINT64_MAX);
+    }
+    assert(!all_in_64bit_range);
+  }
+
+  // Same test as above with min/max set and outside the 64-bit range.
+  {
+    __int128_t a = ((__int128_t)INT64_MIN) * 10;
+    __int128_t b = ((__int128_t)INT64_MAX) * 10;
+    std::minstd_rand0 e;
+    std::uniform_int_distribution<__int128_t> d(a, b);
+    assert(d.min() == a && d.max() == b);
+    bool all_in_64bit_range = true;
+    for (int i = 0; i < 100; ++i) {
+      __int128_t n = d(e);
+      assert(a <= n && n <= b);
+      all_in_64bit_range = all_in_64bit_range && (INT64_MIN <= n) && (n <= (INT64_MAX));
+    }
+    assert(!all_in_64bit_range);
+  }
+
+  // Same test as above with __uint128_t.
+  {
+    __uint128_t a = UINT64_MAX / 3;
+    __uint128_t b = ((__uint128_t)UINT64_MAX) * 10;
+    std::minstd_rand0 e;
+    std::uniform_int_distribution<__uint128_t> d(a, b);
+    assert(d.min() == a && d.max() == b);
+    bool all_in_64bit_range = true;
+    for (int i = 0; i < 100; ++i) {
+      __uint128_t n = d(e);
+      assert(a <= n && n <= b);
+      all_in_64bit_range = all_in_64bit_range && (n <= (UINT64_MAX));
+    }
+    assert(!all_in_64bit_range);
+  }
+
+  // Regression test for PR#51520:
+  {
+    std::minstd_rand0 e;
+    std::uniform_int_distribution<__int128_t> d(INT64_MIN, INT64_MAX);
+    assert(d.min() == INT64_MIN && d.max() == INT64_MAX);
+    for (int i = 0; i < 100; ++i) {
+      __int128_t n = d(e);
+      assert((INT64_MIN <= n) && (n <= INT64_MAX));
+    }
+  }
+
+#endif // TEST_HAS_NO_INT128
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/io.pass.cpp
new file mode 100644
index 0000000..ad01da4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const uniform_int_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            uniform_int_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d1(3, 8);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/max.pass.cpp
new file mode 100644
index 0000000..f4740fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/max.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d(3, 8);
+        assert(d.max() == 8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/min.pass.cpp
new file mode 100644
index 0000000..ae96094
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        D d(3, 8);
+        assert(d.min() == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_assign.pass.cpp
new file mode 100644
index 0000000..1127b80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p0(5, 10);
+        param_type p;
+        p = p0;
+        assert(p.a() == 5);
+        assert(p.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_copy.pass.cpp
new file mode 100644
index 0000000..daea705
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p0(5, 10);
+        param_type p = p0;
+        assert(p.a() == 5);
+        assert(p.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_ctor.pass.cpp
new file mode 100644
index 0000000..0f95414
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.a() == 0);
+        assert(p.b() == std::numeric_limits<long>::max());
+    }
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p(5);
+        assert(p.a() == 5);
+        assert(p.b() == std::numeric_limits<long>::max());
+    }
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p(5, 10);
+        assert(p.a() == 5);
+        assert(p.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_eq.pass.cpp
new file mode 100644
index 0000000..aea4f26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p1(5, 10);
+        param_type p2(5, 10);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        param_type p1(5, 10);
+        param_type p2(6, 10);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_types.pass.cpp
new file mode 100644
index 0000000..d3a849f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/set_param.pass.cpp
new file mode 100644
index 0000000..4eaed99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<> D;
+        typedef D::param_type P;
+        P p(3, 8);
+        D d(6, 7);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/types.pass.cpp
new file mode 100644
index 0000000..23152ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.int/types.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class _IntType = int>
+// class uniform_int_distribution
+// {
+//     typedef IntType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_int_distribution<long> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, long>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/assign.pass.cpp
new file mode 100644
index 0000000..fc6c9ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/assign.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// uniform_real_distribution& operator=(const uniform_real_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::uniform_real_distribution<float> D;
+    D d1(2, 5);
+    D d2;
+    assert(d1 != d2);
+    d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/copy.pass.cpp
new file mode 100644
index 0000000..8b52398
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/copy.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// uniform_real_distribution(const uniform_real_distribution&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::uniform_real_distribution<float> D;
+    D d1(2, 5);
+    D d2 = d1;
+    assert(d1 == d2);
+}
+
+int main(int, char**)
+{
+    test1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/ctor_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/ctor_param.pass.cpp
new file mode 100644
index 0000000..1403ebc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/ctor_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// explicit uniform_real_distribution(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef D::param_type P;
+        P p(3.5, 8);
+        D d(p);
+        assert(d.a() == 3.5);
+        assert(d.b() == 8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/ctor_real_real.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/ctor_real_real.pass.cpp
new file mode 100644
index 0000000..b8d32c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/ctor_real_real.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// explicit uniform_real_distribution(RealType a = 0.0,
+//                                    RealType b = 1.0);             // before C++20
+// uniform_real_distribution() : uniform_real_distribution(0.0) {}   // C++20
+// explicit uniform_real_distribution(RealType a, RealType b = 1.0); // C++20
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::uniform_real_distribution<T> D;
+  static_assert(test_convertible<D>(), "");
+  assert(D(0) == make_implicit<D>());
+  static_assert(!test_convertible<D, T>(), "");
+  static_assert(!test_convertible<D, T, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d;
+        assert(d.a() == 0.0);
+        assert(d.b() == 1.0);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d(-6.5);
+        assert(d.a() == -6.5);
+        assert(d.b() == 1.0);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d(-6.9, 106.1);
+        assert(d.a() == -6.9);
+        assert(d.b() == 106.1);
+    }
+
+    test_implicit<float>();
+    test_implicit<double>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eq.pass.cpp
new file mode 100644
index 0000000..8f250ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// bool operator=(const uniform_real_distribution& x,
+//                const uniform_real_distribution& y);
+// bool operator!(const uniform_real_distribution& x,
+//                const uniform_real_distribution& y);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d1(3, 8);
+        D d2(3, 8);
+        assert(d1 == d2);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d1(3, 8);
+        D d2(3, 8.1);
+        assert(d1 != d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eval.pass.cpp
new file mode 100644
index 0000000..b28bc6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eval.pass.cpp
@@ -0,0 +1,478 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::minstd_rand0 G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::mt19937 G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::mt19937_64 G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::ranlux24_base G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.02);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::ranlux48_base G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::ranlux24 G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::ranlux48 G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::knuth_b G;
+        G g;
+        D d;
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(-1, 1);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs(mean - x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::minstd_rand G;
+        G g;
+        D d(5.5, 25);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g);
+            assert(d.a() <= v && v < d.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (d.a() + d.b()) / 2;
+        D::result_type x_var = sqr(d.b() - d.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eval_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eval_param.pass.cpp
new file mode 100644
index 0000000..2355c5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/eval_param.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// template<class _URNG> result_type operator()(_URNG& g, const param_type& parm);
+
+#include <random>
+#include <cassert>
+#include <vector>
+#include <numeric>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class T>
+inline
+T
+sqr(T x)
+{
+    return x * x;
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef std::minstd_rand G;
+        typedef D::param_type P;
+        G g;
+        D d(5.5, 25);
+        P p(-10, 20);
+        const int N = 100000;
+        std::vector<D::result_type> u;
+        for (int i = 0; i < N; ++i)
+        {
+            D::result_type v = d(g, p);
+            assert(p.a() <= v && v < p.b());
+            u.push_back(v);
+        }
+        D::result_type mean = std::accumulate(u.begin(), u.end(),
+                                              D::result_type(0)) / u.size();
+        D::result_type var = 0;
+        D::result_type skew = 0;
+        D::result_type kurtosis = 0;
+        for (std::size_t i = 0; i < u.size(); ++i)
+        {
+            D::result_type dbl = (u[i] - mean);
+            D::result_type d2 = sqr(dbl);
+            var += d2;
+            skew += dbl * d2;
+            kurtosis += d2 * d2;
+        }
+        var /= u.size();
+        D::result_type dev = std::sqrt(var);
+        skew /= u.size() * dev * var;
+        kurtosis /= u.size() * var * var;
+        kurtosis -= 3;
+        D::result_type x_mean = (p.a() + p.b()) / 2;
+        D::result_type x_var = sqr(p.b() - p.a()) / 12;
+        D::result_type x_skew = 0;
+        D::result_type x_kurtosis = -6./5;
+        assert(std::abs((mean - x_mean) / x_mean) < 0.01);
+        assert(std::abs((var - x_var) / x_var) < 0.01);
+        assert(std::abs(skew - x_skew) < 0.01);
+        assert(std::abs((kurtosis - x_kurtosis) / x_kurtosis) < 0.01);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/get_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/get_param.pass.cpp
new file mode 100644
index 0000000..9b2e72d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/get_param.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// param_type param() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef D::param_type P;
+        P p(3, 8);
+        D d(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/io.pass.cpp
new file mode 100644
index 0000000..2ee9683
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/io.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// template <class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const uniform_real_distribution& x);
+//
+// template <class charT, class traits>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            uniform_real_distribution& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d1(3, 8);
+        std::ostringstream os;
+        os << d1;
+        std::istringstream is(os.str());
+        D d2;
+        is >> d2;
+        assert(d1 == d2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/max.pass.cpp
new file mode 100644
index 0000000..d33787c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/max.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// result_type max() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d(3, 8);
+        assert(d.max() == 8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/min.pass.cpp
new file mode 100644
index 0000000..63f1da5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/min.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// result_type min() const;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        D d(3, 8);
+        assert(d.min() == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_assign.pass.cpp
new file mode 100644
index 0000000..13c5885
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_assign.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p0(5, 10);
+        param_type p;
+        p = p0;
+        assert(p.a() == 5);
+        assert(p.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_copy.pass.cpp
new file mode 100644
index 0000000..12ca132
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_copy.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p0(5, 10);
+        param_type p = p0;
+        assert(p.a() == 5);
+        assert(p.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_ctor.pass.cpp
new file mode 100644
index 0000000..3ff3429
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p;
+        assert(p.a() == 0);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p(5);
+        assert(p.a() == 5);
+        assert(p.b() == 1);
+    }
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p(5, 10);
+        assert(p.a() == 5);
+        assert(p.b() == 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_eq.pass.cpp
new file mode 100644
index 0000000..19e05bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_eq.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p1(5, 10);
+        param_type p2(5, 10);
+        assert(p1 == p2);
+    }
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        param_type p1(5, 10);
+        param_type p2(6, 10);
+        assert(p1 != p2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_types.pass.cpp
new file mode 100644
index 0000000..3f2309c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/param_types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+// {
+//     class param_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::param_type param_type;
+        typedef param_type::distribution_type distribution_type;
+        static_assert((std::is_same<D, distribution_type>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/set_param.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/set_param.pass.cpp
new file mode 100644
index 0000000..97c1485
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/set_param.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+
+// void param(const param_type& parm);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<> D;
+        typedef D::param_type P;
+        P p(3, 8);
+        D d(6, 7);
+        d.param(p);
+        assert(d.param() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/types.pass.cpp
new file mode 100644
index 0000000..4218f4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.dist/rand.dist.uni/rand.dist.uni.real/types.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType = double>
+// class uniform_real_distribution
+// {
+//     typedef IntType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::uniform_real_distribution<float> D;
+        typedef D::result_type result_type;
+        static_assert((std::is_same<result_type, float>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/alg.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/alg.pass.cpp
new file mode 100644
index 0000000..77b7c57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/alg.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef unsigned long long T;
+
+    // m might overflow, but the overflow is OK so it shouldn't use schrage's algorithm
+    typedef std::linear_congruential_engine<T, 25214903917ull, 1, (1ull<<48)> E1;
+    E1 e1;
+    // make sure the right algorithm was used
+    assert(e1() == 25214903918);
+    assert(e1() == 205774354444503);
+    assert(e1() == 158051849450892);
+    // make sure result is in bounds
+    assert(e1() < (1ull<<48));
+    assert(e1() < (1ull<<48));
+    assert(e1() < (1ull<<48));
+    assert(e1() < (1ull<<48));
+    assert(e1() < (1ull<<48));
+
+    // m might overflow. The overflow is not OK and result will be in bounds
+    // so we should use shrage's algorithm
+    typedef std::linear_congruential_engine<T, (1ull<<2), 0, (1ull<<63) + 1> E2;
+    E2 e2;
+    // make sure shrage's algorithm is used (it would be 0s otherwise)
+    assert(e2() == 4);
+    assert(e2() == 16);
+    assert(e2() == 64);
+    // make sure result is in bounds
+    assert(e2() < (1ull<<48) + 1);
+    assert(e2() < (1ull<<48) + 1);
+    assert(e2() < (1ull<<48) + 1);
+    assert(e2() < (1ull<<48) + 1);
+    assert(e2() < (1ull<<48) + 1);
+
+    // m will not overflow so we should not use shrage's algorithm
+    typedef std::linear_congruential_engine<T, 1ull, 1, (1ull<<48)> E3;
+    E3 e3;
+    // make sure the correct algorithm was used
+    assert(e3() == 2);
+    assert(e3() == 3);
+    assert(e3() == 4);
+    // make sure result is in bounds
+    assert(e3() < (1ull<<48));
+    assert(e3() < (1ull<<48));
+    assert(e3() < (1ull<<48));
+    assert(e3() < (1ull<<48));
+    assert(e2() < (1ull<<48));
+
+    return 0;
+}
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/assign.pass.cpp
new file mode 100644
index 0000000..1262084
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/assign.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// linear_congruential_engine& operator=(const linear_congruential_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T, T a, T c, T m>
+void
+test1()
+{
+    typedef std::linear_congruential_engine<T, a, c, m> E;
+    E e1;
+    E e2;
+    assert(e1 == e2);
+    (void)e1();
+    e2 = e1;
+    assert(e1 == e2);
+}
+
+template <class T>
+void
+test()
+{
+    test1<T, 0, 0, 0>();
+    test1<T, 0, 1, 2>();
+    test1<T, 1, 1, 2>();
+    const T M(static_cast<T>(-1));
+    test1<T, 0, 0, M>();
+    test1<T, 0, M-2, M>();
+    test1<T, 0, M-1, M>();
+    test1<T, M-2, 0, M>();
+    test1<T, M-2, M-2, M>();
+    test1<T, M-2, M-1, M>();
+    test1<T, M-1, 0, M>();
+    test1<T, M-1, M-2, M>();
+    test1<T, M-1, M-1, M>();
+}
+
+int main(int, char**)
+{
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/copy.pass.cpp
new file mode 100644
index 0000000..5dac077
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/copy.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// linear_congruential_engine(const linear_congruential_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T, T a, T c, T m>
+void
+test1()
+{
+    typedef std::linear_congruential_engine<T, a, c, m> E;
+    E e1;
+    E e2 = e1;
+    assert(e1 == e2);
+    (void)e1();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+template <class T>
+void
+test()
+{
+    test1<T, 0, 0, 0>();
+    test1<T, 0, 1, 2>();
+    test1<T, 1, 1, 2>();
+    const T M(static_cast<T>(-1));
+    test1<T, 0, 0, M>();
+    test1<T, 0, M-2, M>();
+    test1<T, 0, M-1, M>();
+    test1<T, M-2, 0, M>();
+    test1<T, M-2, M-2, M>();
+    test1<T, M-2, M-1, M>();
+    test1<T, M-1, 0, M>();
+    test1<T, M-1, M-2, M>();
+    test1<T, M-1, M-1, M>();
+}
+
+int main(int, char**)
+{
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/ctor_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/ctor_result_type.pass.cpp
new file mode 100644
index 0000000..807e698
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/ctor_result_type.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// explicit linear_congruential_engine(result_type s = default_seed);         // before C++20
+// linear_congruential_engine() : linear_congruential_engine(default_seed) {} // C++20
+// explicit linear_congruential_engine(result_type s);                        // C++20
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+std::string to_string(T const& e) {
+  std::ostringstream os;
+  os << e;
+  return os.str();
+}
+
+template <class T>
+void
+test1()
+{
+    // c % m != 0 && s % m != 0
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 7> E;
+        E e(5);
+        assert(to_string(e) == "5");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 0> E;
+        E e(5);
+        assert(to_string(e) == "5");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 4> E;
+        E e(5);
+        assert(to_string(e) == "1");
+    }
+}
+
+template <class T>
+void
+test2()
+{
+    // c % m != 0 && s % m == 0
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 7> E;
+        E e(7);
+        assert(to_string(e) == "0");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 0> E;
+        E e(0);
+        assert(to_string(e) == "0");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 4> E;
+        E e(4);
+        assert(to_string(e) == "0");
+    }
+}
+
+template <class T>
+void
+test3()
+{
+    // c % m == 0 && s % m != 0
+    {
+        typedef std::linear_congruential_engine<T, 2, 0, 7> E;
+        E e(3);
+        assert(to_string(e) == "3");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 0, 0> E;
+        E e(5);
+        assert(to_string(e) == "5");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 0, 4> E;
+        E e(7);
+        assert(to_string(e) == "3");
+    }
+}
+
+template <class T>
+void
+test4()
+{
+    // c % m == 0 && s % m == 0
+    {
+        typedef std::linear_congruential_engine<T, 2, 0, 7> E;
+        E e(7);
+        assert(to_string(e) == "1");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 0, 0> E;
+        E e(0);
+        assert(to_string(e) == "1");
+    }
+    {
+        typedef std::linear_congruential_engine<T, 2, 0, 4> E;
+        E e(8);
+        assert(to_string(e) == "1");
+    }
+}
+
+template <class T>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  typedef std::linear_congruential_engine<T, 2, 0, 7> E;
+  static_assert(test_convertible<E>(), "");
+  assert(E(E::default_seed) == make_implicit<E>());
+  static_assert(!test_convertible<E, T>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test1<unsigned short>();
+    test1<unsigned int>();
+    test1<unsigned long>();
+    test1<unsigned long long>();
+
+    test2<unsigned short>();
+    test2<unsigned int>();
+    test2<unsigned long>();
+    test2<unsigned long long>();
+
+    test3<unsigned short>();
+    test3<unsigned int>();
+    test3<unsigned long>();
+    test3<unsigned long long>();
+
+    test4<unsigned short>();
+    test4<unsigned int>();
+    test4<unsigned long>();
+    test4<unsigned long long>();
+
+    test_implicit<unsigned short>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/ctor_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/ctor_sseq.pass.cpp
new file mode 100644
index 0000000..562f86b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/ctor_sseq.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// template<class Sseq> explicit linear_congruential_engine(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        unsigned a[] = {3, 5, 7};
+        std::seed_seq sseq(a, a+3);
+        std::linear_congruential_engine<unsigned, 5, 7, 11> e1(sseq);
+        std::linear_congruential_engine<unsigned, 5, 7, 11> e2(4);
+        assert(e1 == e2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/default.pass.cpp
new file mode 100644
index 0000000..10bc1d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/default.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// linear_congruential_engine();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T, T a, T c, T m>
+void
+test1()
+{
+    typedef std::linear_congruential_engine<T, a, c, m> LCE;
+    LCE e1;
+    LCE e2;
+    e2.seed();
+    assert(e1 == e2);
+}
+
+template <class T>
+void
+test()
+{
+    test1<T, 0, 0, 0>();
+    test1<T, 0, 1, 2>();
+    test1<T, 1, 1, 2>();
+    const T M(static_cast<T>(-1));
+    test1<T, 0, 0, M>();
+    test1<T, 0, M-2, M>();
+    test1<T, 0, M-1, M>();
+    test1<T, M-2, 0, M>();
+    test1<T, M-2, M-2, M>();
+    test1<T, M-2, M-1, M>();
+    test1<T, M-1, 0, M>();
+    test1<T, M-1, M-2, M>();
+    test1<T, M-1, M-1, M>();
+}
+
+int main(int, char**)
+{
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/discard.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/discard.pass.cpp
new file mode 100644
index 0000000..a60bd26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/discard.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+rand0()
+{
+    typedef std::linear_congruential_engine<T, 16807, 0, 2147483647> E;
+    E e;
+    e.discard(9999);
+    assert(e() == 1043618065);
+}
+
+template <class T>
+void
+rand()
+{
+    typedef std::linear_congruential_engine<T, 48271, 0, 2147483647> E;
+    E e;
+    e.discard(9999);
+    assert(e() == 399268537);
+}
+
+template <class T>
+void
+other()
+{
+    typedef std::linear_congruential_engine<T, 48271, 123465789, 2147483647> E;
+    E e1;
+    E e2;
+    assert(e1 == e2);
+    e1.discard(1);
+    assert(e1 != e2);
+    (void)e2();
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    rand0<unsigned int>();
+    rand0<unsigned long>();
+    rand0<unsigned long long>();
+
+    rand<unsigned int>();
+    rand<unsigned long>();
+    rand<unsigned long long>();
+
+    other<unsigned int>();
+    other<unsigned long>();
+    other<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/eval.pass.cpp
new file mode 100644
index 0000000..e7c7f15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/eval.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+randu()
+{
+    typedef std::linear_congruential_engine<T, 65539, 0, 2147483648u> E;
+    E e(1);
+    assert(e() == 65539);
+    assert(e() == 393225);
+    assert(e() == 1769499);
+    assert(e() == 7077969);
+    assert(e() == 26542323);
+    assert(e() == 95552217);
+    assert(e() == 334432395);
+    assert(e() == 1146624417);
+    assert(e() == 1722371299);
+    assert(e() == 14608041);
+    assert(e() == 1766175739);
+    assert(e() == 1875647473);
+}
+
+template <class T>
+void
+minstd()
+{
+    typedef std::linear_congruential_engine<T, 16807, 0, 2147483647> E;
+    E e(1);
+    assert(e() == 16807);
+    assert(e() == 282475249);
+    assert(e() == 1622650073);
+    assert(e() == 984943658);
+    assert(e() == 1144108930);
+    assert(e() == 470211272);
+    assert(e() == 101027544);
+    assert(e() == 1457850878);
+    assert(e() == 1458777923);
+    assert(e() == 2007237709);
+    assert(e() == 823564440);
+    assert(e() == 1115438165);
+}
+
+template <class T>
+void
+Haldir()
+{
+    typedef std::linear_congruential_engine<T, 16807, 78125, 2147483647> E;
+    E e(207560540);
+    assert(e() == 956631177);
+    assert(e() == 2037688522);
+    assert(e() == 1509348670);
+    assert(e() == 1546336451);
+    assert(e() == 429714088);
+    assert(e() == 217250280);
+}
+
+int main(int, char**)
+{
+    randu<unsigned int>();
+    randu<unsigned long>();
+    randu<unsigned long long>();
+
+    minstd<unsigned int>();
+    minstd<unsigned long>();
+    minstd<unsigned long long>();
+
+    Haldir<unsigned int>();
+    Haldir<unsigned long>();
+    Haldir<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/io.pass.cpp
new file mode 100644
index 0000000..7f7b75e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/io.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// template <class charT, class traits,
+//           class UIntType, UIntType a, UIntType c, UIntType m>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const linear_congruential_engine<UIntType, a, c, m>& x);
+//
+// template <class charT, class traits,
+//           class UIntType, UIntType a, UIntType c, UIntType m>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            linear_congruential_engine<UIntType, a, c, m>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::linear_congruential_engine<unsigned, 48271, 0, 2147483647> E;
+        E e1;
+        e1.discard(100);
+        std::ostringstream os;
+        os << e1;
+        std::istringstream is(os.str());
+        E e2;
+        is >> e2;
+        assert(e1 == e2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/params.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/params.fail.cpp
new file mode 100644
index 0000000..4eebedb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/params.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// requirements on parameters
+
+#include <random>
+
+int main(int, char**)
+{
+    typedef unsigned long long T;
+
+    // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '1ULL == 0 || 1ULL < 1ULL'{{.*}}linear_congruential_engine invalid parameters}}
+    std::linear_congruential_engine<T, 0, 0, 0> e2;
+    // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '1ULL == 0 || 1ULL < 1ULL'{{.*}}linear_congruential_engine invalid parameters}}
+    std::linear_congruential_engine<T, 0, 1, 1> e3;
+    std::linear_congruential_engine<T, 1, 0, 1> e4;
+    // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement 'is_unsigned<int>::value'{{.*}}_UIntType must be unsigned type}}
+    std::linear_congruential_engine<int, 0, 0, 0> e5;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/result_type.pass.cpp
new file mode 100644
index 0000000..ebcc973
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/result_type.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+// class linear_congruential_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    static_assert((std::is_same<
+        typename std::linear_congruential_engine<T, 0, 0, 0>::result_type,
+        T>::value), "");
+}
+
+int main(int, char**)
+{
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_result_type.pass.cpp
new file mode 100644
index 0000000..f601d95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_result_type.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// void seed(result_type s = default_seed);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test1()
+{
+    for (T s = 0; s < 20; ++s)
+    {
+        typedef std::linear_congruential_engine<T, 2, 3, 7> E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+int main(int, char**)
+{
+    test1<unsigned short>();
+    test1<unsigned int>();
+    test1<unsigned long>();
+    test1<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_sseq.pass.cpp
new file mode 100644
index 0000000..23a34be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/seed_sseq.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+//   class linear_congruential_engine;
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        unsigned a[] = {3, 5, 7};
+        std::seed_seq sseq(a, a+3);
+        std::linear_congruential_engine<unsigned, 5, 7, 11> e1;
+        std::linear_congruential_engine<unsigned, 5, 7, 11> e2(4);
+        assert(e1 != e2);
+        e1.seed(sseq);
+        assert(e1 == e2);
+    }
+    {
+        unsigned a[] = {3, 5, 7, 9, 11};
+        std::seed_seq sseq(a, a+5);
+        typedef std::linear_congruential_engine<unsigned long long, 1, 1, 0x200000001ULL> E;
+        E e1(4309005589);
+        E e2(sseq);
+        assert(e1 == e2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/values.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/values.pass.cpp
new file mode 100644
index 0000000..d9d47c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.lcong/values.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, UIntType a, UIntType c, UIntType m>
+// class linear_congruential_engine
+// {
+// public:
+//     engine characteristics
+//     static constexpr result_type multiplier = a;
+//     static constexpr result_type increment = c;
+//     static constexpr result_type modulus = m;
+//     static constexpr result_type min() { return c == 0u ? 1u: 0u;}
+//     static constexpr result_type max() { return m - 1u;}
+//     static constexpr result_type default_seed = 1u;
+
+#include <random>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void where(const T &) {}
+
+template <class T, T a, T c, T m>
+void
+test1()
+{
+    typedef std::linear_congruential_engine<T, a, c, m> LCE;
+    typedef typename LCE::result_type result_type;
+    static_assert((LCE::multiplier == a), "");
+    static_assert((LCE::increment == c), "");
+    static_assert((LCE::modulus == m), "");
+#if TEST_STD_VER >= 11
+    static_assert((LCE::min() == (c == 0u ? 1u: 0u)), "");
+#else
+    assert((LCE::min() == (c == 0u ? 1u: 0u)));
+#endif
+
+    TEST_DIAGNOSTIC_PUSH
+    TEST_MSVC_DIAGNOSTIC_IGNORED(4310) // cast truncates constant value
+
+#if TEST_STD_VER >= 11
+    static_assert((LCE::max() == result_type(m - 1u)), "");
+#else
+    assert((LCE::max() == result_type(m - 1u)));
+#endif
+
+    TEST_DIAGNOSTIC_POP
+
+    static_assert((LCE::default_seed == 1), "");
+    where(LCE::multiplier);
+    where(LCE::increment);
+    where(LCE::modulus);
+    where(LCE::default_seed);
+}
+
+template <class T>
+void
+test()
+{
+    test1<T, 0, 0, 0>();
+    test1<T, 0, 1, 2>();
+    test1<T, 1, 1, 2>();
+    const T M(static_cast<T>(-1));
+    test1<T, 0, 0, M>();
+    test1<T, 0, M-2, M>();
+    test1<T, 0, M-1, M>();
+    test1<T, M-2, 0, M>();
+    test1<T, M-2, M-2, M>();
+    test1<T, M-2, M-1, M>();
+    test1<T, M-1, 0, M>();
+    test1<T, M-1, M-2, M>();
+    test1<T, M-1, M-1, M>();
+}
+
+int main(int, char**)
+{
+    test<unsigned short>();
+    test<unsigned int>();
+    test<unsigned long>();
+    test<unsigned long long>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/assign.pass.cpp
new file mode 100644
index 0000000..5682dd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/assign.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// mersenne_twister_engine& operator=(const mersenne_twister_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::mt19937 E;
+    E e1(2);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::mt19937_64 E;
+    E e1(3);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/copy.pass.cpp
new file mode 100644
index 0000000..432f734
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/copy.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// mersenne_twister_engine(const mersenne_twister_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::mt19937 E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::mt19937_64 E;
+    E e1;
+    (void)e1();
+    E e2(e1);
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_result_type.pass.cpp
new file mode 100644
index 0000000..a814056
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_result_type.pass.cpp
@@ -0,0 +1,274 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// explicit mersenne_twister_engine(result_type s = default_seed);      // before C++20
+// mersenne_twister_engine() : mersenne_twister_engine(default_seed) {} // C++20
+// explicit mersenne_twister_engine(result_type s);                     // C++20
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+std::string
+to_string(T const &e)
+{
+    std::ostringstream os;
+    os << e;
+    return os.str();
+}
+
+void
+test1()
+{
+    const char* a = "0 1 1812433255 1900727105 1208447044 2481403966 4042607538 337614300 "
+    "3232553940 1018809052 3202401494 1775180719 3192392114 594215549 184016991 "
+    "829906058 610491522 3879932251 3139825610 297902587 4075895579 2943625357 "
+    "3530655617 1423771745 2135928312 2891506774 1066338622 135451537 933040465 "
+    "2759011858 2273819758 3545703099 2516396728 1272276355 3172048492 "
+    "3267256201 2332199830 1975469449 392443598 1132453229 2900699076 "
+    "1998300999 3847713992 512669506 1227792182 1629110240 112303347 2142631694 "
+    "3647635483 1715036585 2508091258 1355887243 1884998310 3906360088 "
+    "952450269 3647883368 3962623343 3077504981 2023096077 3791588343 "
+    "3937487744 3455116780 1218485897 1374508007 2815569918 1367263917 "
+    "472908318 2263147545 1461547499 4126813079 2383504810 64750479 2963140275 "
+    "1709368606 4143643781 835933993 1881494649 674663333 2076403047 858036109 "
+    "1667579889 1706666497 607785554 1995775149 1941986352 3448871082 "
+    "2109910019 1474883361 1623095288 1831376534 2612738285 81681830 2204289242 "
+    "1365038485 251164610 4268495337 1805601714 1262528768 1442526919 "
+    "1675006593 965627108 646339161 499795587 840887574 380522518 3023789847 "
+    "1457635507 1947093157 2600365344 2729853143 1550618999 1390905853 "
+    "3021294812 882647559 838872117 1663880796 4222103589 2754172275 3844026123 "
+    "3199260319 4176064873 3591027019 2690294242 2978135515 3172796441 "
+    "3263669796 1451257057 1427035359 4174826006 2171992010 1537002090 "
+    "3122405306 4162452508 3271954368 3794310005 3240514581 1270412086 "
+    "3030475836 2281945856 2644171349 3109139423 4253563838 1289926431 "
+    "1396919653 733220100 2753316645 1196225013 3699575255 3569440056 "
+    "2675979228 2624079148 3463113149 863430286 623703199 2113837653 2656425919 "
+    "175981357 4271478366 4238022735 1665483419 86880610 2963435083 1830392943 "
+    "847801865 3237296945 332143967 3973606945 2671879697 2236330279 2360127810 "
+    "3283955434 203240344 4048139172 13189264 2263058814 247241371 1566765783 "
+    "3084408095 3719371299 1958375251 1985924622 1712739232 1861691451 "
+    "2644502937 2337807839 784993770 2962208780 2190810177 1523122731 "
+    "714888527 578678761 3698481324 1801168075 534650483 3390213921 3923356461 "
+    "3586009066 2059432114 52511333 1969897376 3630122061 524661135 3513619765 "
+    "563070233 501359785 477489274 658768624 938973567 1548584683 1345287459 "
+    "2488691004 3441144905 3849305094 2430000078 855172178 614463281 2092744749 "
+    "176381493 1655802051 2273888101 2474494847 3471978030 2138918303 575352373 "
+    "1658230985 1675972553 2946663114 915579339 284981499 53939948 3022598146 "
+    "1861218535 3403620774 4203516930 2360471119 3134536268 1383448498 "
+    "1307602316 3847663247 3027225131 3597251613 3186237127 725127595 "
+    "1928526954 1843386923 3560410503 54688266 1791983849 2519860352 4256389699 "
+    "2328812602 486464275 3578698363 301279829 1303654791 4181868765 971794070 "
+    "1933885487 3996807464 2144053754 4079903755 3775774765 3481760044 "
+    "1212862354 1067356423 3764189132 1609862325 2209601551 2565747501 "
+    "161962392 4045451782 2605574664 2520953090 3490240017 1082791980 44474324 "
+    "101811128 4268650669 4171338684 772375154 3920460306 2319139534 599033750 "
+    "2950874441 3373922995 1496848525 4095253594 1271943484 1498723121 "
+    "3097453329 3698082465 281869581 3148270661 3591477288 747441437 2809508504 "
+    "3896107498 303747862 2368081624 1844217645 886825352 287949781 1444561207 "
+    "2512101757 2062331723 741720931 1383797313 3876746355 2041045348 "
+    "2627599118 1124169970 200524822 3484820454 55883666 1135054804 669498692 "
+    "2677215504 3097911127 1509628615 617580381 2229022193 85601568 3243896546 "
+    "3715672328 912168347 2359163500 1180347564 4243175048 2092067103 880183327 "
+    "4000664709 2045044777 3500474644 1515175520 1862207123 186628841 "
+    "3337252925 708933575 4015964629 3136815297 3314919747 2891909013 "
+    "3316567785 3944275369 3608506218 2884839110 3054055598 2707439927 "
+    "1381111877 3275487281 4292456216 2639563270 3327301876 3576924628 "
+    "721056309 2002808140 748967365 52380958 2200261692 763456477 1708381337 "
+    "2038446433 2682979402 1526413779 2211263302 3879771969 75966584 3645059271 "
+    "2985763524 4085690255 82390958 1883631385 1647521260 1598026998 3038041577 "
+    "2501913134 3279302868 1738888524 805035483 756399074 3863810982 1097797270 "
+    "1505792529 898904527 583561003 717152376 3333867738 1099456544 1663473545 "
+    "1242141229 3828627682 1966201676 1713552361 3852160017 1584965284 21695908 "
+    "1013262144 145341901 3995441263 3462066219 2239637848 1214086163 "
+    "2428868268 1650037305 1545513388 1621198806 4232947817 1823092073 "
+    "256414624 1745018809 1357102386 2055139770 3280958307 2482431613 "
+    "1664870585 859130423 4097751123 3079768369 2470211009 2984880786 "
+    "2808568948 2877071923 1984903163 302768457 1866396789 869566317 3746415787 "
+    "4169433075 3025005404 3980733379 3539207278 3953071536 876960847 "
+    "2548872156 800507464 1865466907 1273317878 3754712872 1757188269 "
+    "3229950355 3731640200 2283390608 2204990292 411873449 447423849 1852437802 "
+    "472825525 3044219944 2913114194 1859709265 4053786194 574820536 2104496732 "
+    "865469814 2438352724 4208743605 4215067542 1364015250 4139974345 "
+    "3838747005 1818502786 2914274940 1402365828 1751123528 2302578077 "
+    "2463168652 1968705496 1730700144 3023943273 1139096844 2658667767 "
+    "2063547264 705791165 1444775274 2415454225 1575664730 921044163 648101324 "
+    "1212387162 4191962054 1787702169 1888718041 1518218010 3398792842 "
+    "4079359729 149721439 750400353 2661036076 3802767886 520152586 951852508 "
+    "2939585975 1375969109 385733137 3523607459 1902438415 4250996086 "
+    "2712727066 484493674 3932107461 1428488210 1764242548 3424801055 "
+    "4004904451 2226862072 2393366939 3609584727 3614444319 317349896 "
+    "3826527525 204023804 981902443 3356042039 3051207045 1869902661 561831895 "
+    "3706675415 1527687593 1227610446 2596341042 3191717368 3269246891 "
+    "557877074 4062070629 3052520266 3772487029 400039836 3195205275 4085394797 "
+    "1655557239 1345770144 2864727192 449281238 73189507 528365765 2727400656 "
+    "247880434 2408277395 777039183 2210179398 1088433648 2124356402 1555630141 "
+    "604790219 195012151 3312518356 923728373 3999251660 3313059535 3478133921 "
+    "3395026960 383464614 3425869222 2446885186 4032184426 157195416 3158909476 "
+    "1663750443 2046427584 1658453076 1784483001 3146546889 1238739785 "
+    "2297306523 3472330897 2953326031 2421672215 1221694592 1588568605 "
+    "2546987845 3375168573 2137961649 3056565164 330165219 235900365 1000384800 "
+    "2697255904 579122283 3050664825 73426122 1232986102 2940571064 3076486824 "
+    "1708182873 2796363264 292154131 4280019913 1102652157 1185393592 "
+    "1494991690 4270076389 2384840717 425785147 2385321880 317514772 3926962743 "
+    "392176856 3465421709 1878853468 122662664 2958252160 1858961315 2244939588 "
+    "2361884409 2860936803 683833250 3291277128 1686857206 1112632275 "
+    "1200680507 3342928196 2677058150 939442136 3407104669 2906783932 "
+    "3668048733 2030009470 1910839172 1234925283 3575831445 123595418 "
+    "2362440495 3048484911 1796872496";
+    std::mt19937 e1(0);
+    assert(to_string(e1) == a);
+}
+
+void
+test2()
+{
+    const char* a = "0 1 6364136223846793007 13885033948157127961 "
+    "15324573939901584278 12737837167382305846 15195339788985155882 "
+    "6554113247712070460 17235932740818599105 13007415075556305955 "
+    "6585479514541334743 8274505865835507625 1718218088692873364 "
+    "10390651247454232081 12911994993614796389 3986900029987203370 "
+    "6673827651897561714 4426752746717694792 7419158062930293690 "
+    "5800047417539173618 15710773105226458059 16164512590413496893 "
+    "3438015953120274172 3483801391287623267 293704481016263807 "
+    "11580856846363212652 3489109114147636336 3391036861618673611 "
+    "8265793309278544843 7557898467821912223 11008748280761875940 "
+    "15929443707841919885 8545695347411085846 10810459396490399532 "
+    "12233244910455127352 15556950738631379285 16711543556686614082 "
+    "12362193084052127890 16520645558585805174 5163125267185202360 "
+    "405552980610370477 17567412011316060306 18195950784827697319 "
+    "7893142112162906367 11294475722810961618 7284845498332539581 "
+    "8406882439401998138 4375387785957411470 9627875716250684710 "
+    "8860968026642934661 9743109216691708518 152611520104818631 "
+    "5897430410700879663 5351672954305365323 16325991383734641720 "
+    "9695181037355459478 15420132328343498044 17772146581546890572 "
+    "12095930435311226909 3066005052193896110 11579395203346116306 "
+    "9168946227698330317 18318927644793076250 16096433325093805476 "
+    "14945900876820434843 16826760579960858105 17664119339058295604 "
+    "17844797344364136942 1071414400549507565 16688779616725465582 "
+    "3684635020921274863 12774052823168116810 17270284502989966576 "
+    "1081012692742984704 4377021575203177546 18341292555997099853 "
+    "13297939683513494274 15065725504474304333 10796297883750572804 "
+    "15233335271871291997 8767977593699151062 3360856014170688284 "
+    "7828232912764786750 15167717223619970150 9622174963375022357 "
+    "18262792478991268448 1196631425707106493 5368342740538672272 "
+    "10381091599850241237 12108437846306626340 6150860188928778248 "
+    "3342980288459577584 12715439159457051276 17996971042887275859 "
+    "9749679821487730542 17763727344608586331 16024467606290078168 "
+    "7763401887585513696 4448278918811662063 16947956613780322662 "
+    "15144807360840708645 3878082612940188435 10709780449699561405 "
+    "1649555943517500922 3206645931693769562 12562913950237146427 "
+    "237213339742767727 12987800257476421358 1653669854585203688 "
+    "3485900643226898485 13961759114404652223 5243794832751327611 "
+    "10337687908642742498 16946139522050041809 16716562961992396380 "
+    "4275124606042261542 4055100795824867618 6424268654905981295 "
+    "3424516503413156556 2670380025813203539 10750762735193959951 "
+    "8790031149370411970 4021216986392972993 12076090355041998696 "
+    "14407920322903159838 10653597737935867030 15483225617438352002 "
+    "2497775263858626604 12295882369431088188 14256043521530136935 "
+    "2687322778627883798 3419797801078863201 8786888481486602641 "
+    "445698423634900693 9597067954623467255 7101345576557603992 "
+    "1498579197046783597 10403325187679734962 2464586980321053562 "
+    "2022012026329844477 10802281218030350853 6628929099856200904 "
+    "6828177972863192803 8589868113309334601 5245595233272009016 "
+    "5335692004673212054 4515133017699498525 15966447436053813932 "
+    "15199779177078162007 4190689609934804313 13003438276435994683 "
+    "8406046831313066396 10564320513686955057 12668913223662201488 "
+    "13130110932487580228 1030848205404711145 17684061609212954769 "
+    "12942207438298787911 10731611242140874687 5165052527778107352 "
+    "16323046249518133445 17119162873327029615 5754858052433703070 "
+    "3864761150247579030 9945988334920003074 11409854727071782565 "
+    "5000838138362434817 15526574143469400487 18094554078711846524 "
+    "5576294272011007484 3478525338408894755 11392694223389544658 "
+    "4692963068671452476 4459301637730340710 9699395817392066460 "
+    "14644636990626292085 18065377773424192622 5217202490849387226 "
+    "16175595974171756081 2109372019589047677 1624752883142646445 "
+    "13462209973053735966 12082930933973802402 1568864426788967895 "
+    "17047994306870001795 10556833209957537593 955604103878351641 "
+    "9062985603395234592 9757612676622840969 1767246562613391916 "
+    "9752598821733361274 7499745701633625047 7824811626141302622 "
+    "15819064077972391284 5660565551854829485 17645390577243129343 "
+    "7343780801046581776 2233358068547689666 8716657172695403744 "
+    "9129027798969787220 334709674395230649 2063182499026924878 "
+    "13089071159640936832 1765917316143960741 17552378408917656269 "
+    "3917018959478722819 15626740210483166037 1645962609209923821 "
+    "12277169606472643961 14545894350924442736 11485249378718653961 "
+    "9205208816702766530 10967561305613932827 3105992977398681914 "
+    "2125140299311648264 11619505070220308543 5030167448920096401 "
+    "4248170446421798953 16184577688118775567 9240607582885304823 "
+    "11838996733938359277 415426114101983968 14340734742548675134 "
+    "4124085748228276376 17686494750190224280 9472996569628985376 "
+    "1207013222233148636 3031046462562068367 45068538181330439 "
+    "8678647417835301152 10693327126492781235 3058899219097846020 "
+    "18377730418355022492 10269941972656742364 15986476992758938864 "
+    "14575856764093007010 14749682846448398393 1042926396621439263 "
+    "12184905641567868001 3518848236485931862 6718580865438347534 "
+    "6319395993260741012 2855168874111910691 2482146419106261786 "
+    "17290238774162848390 8071397865265268054 15873003794708011585 "
+    "14422764926380465297 14140979091525022882 3573480287238168646 "
+    "1525896111244666696 7537826952717918371 10482908122538761078 "
+    "17003233041653857 9473838740924911883 8438240966750123668 "
+    "10697754962581554225 15048771265786776312 9067877678399943713 "
+    "3399555692325948067 6150260207049997483 7165140289246675175 "
+    "14816202987105583988 4753550992948864498 10549400354582510015 "
+    "13212062554023586370 1585477630313819722 476999696494664205 "
+    "3208739183359199317 16011681780347380478 8149150693959772807 "
+    "803412833228911773 2360961455092949929 1517204230639934662 "
+    "13863717544358808032 16792122738584967930 12742474971940259289 "
+    "1859755681395355028 1540431035241590810 3883807554140904361 "
+    "16189061625447625933 12376367376041900879 8006563585771266211 "
+    "2682617767291542421 8593924529704142157 9070391845133329273 "
+    "3557484410564396342 9301398051805853085 12632514768298643219 "
+    "227653509634201118 7247795074312488552 4939136716843120792 "
+    "6533591052147596041 1308401457054431629 17488144120120152559 "
+    "14075631579093810083 4015705597302725704 6833920126528811473 "
+    "5095302940809114298 8312250184258072842 15770605014574863643 "
+    "14091690436120485477 15763282477731738396 16394237160547425954 "
+    "5066318118328746621 13140493775100916989 6371148952471982853 "
+    "15150289760867914983 4931341382074091848 12635920082410445322 "
+    "8498109357807439006 14836776625250834986";
+    std::mt19937_64 e1(0);
+    assert(to_string(e1) == a);
+}
+
+template <class E, typename Arg>
+void test_implicit() {
+#if TEST_STD_VER >= 11
+  static_assert(test_convertible<E>(), "");
+  assert(E(E::default_seed) == make_implicit<E>());
+  static_assert(!test_convertible<E, Arg>(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+    test_implicit<std::mt19937, uint_fast32_t>();
+    test_implicit<std::mt19937_64, uint_fast64_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_sseq.pass.cpp
new file mode 100644
index 0000000..ff02892
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_sseq.pass.cpp
@@ -0,0 +1,315 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// template<class Sseq> explicit mersenne_twister_engine(Sseq& q);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "358595400 4166558815 2016177162 3414480257 "
+    "4027494649 3722317195 1190532340 3212207148 "
+    "3537847251 389019999 1098708832 3277907415 "
+    "1946784350 3608286140 2091419822 2227407035 "
+    "2229110723 1825348377 1276269279 314337202 "
+    "3182935337 1313150029 3118776508 3707918501 "
+    "1900972958 4054820954 3973178248 906260237 "
+    "1403942218 3139931556 2807126524 3940936448 "
+    "1316345796 631296613 2268418920 2914000794 "
+    "3760588399 3226216036 880155129 4183611084 "
+    "211541083 3755352858 1331383234 3036493096 "
+    "937478630 2092170412 777784402 93392729 "
+    "3644029210 1681392086 2427001226 3143870332 "
+    "3703581502 2017505388 1706274541 1049329728 "
+    "2452031492 3437261233 2581204087 1700889875 "
+    "1652573881 2127047692 3778506964 1960741508 "
+    "2739602360 3395905609 2123355622 3041272975 "
+    "784200748 3558951522 1002787860 4063320888 "
+    "1587315560 4042698976 659183308 3082256417 "
+    "2808969567 2361418535 3468698782 750700970 "
+    "2991209851 3581521382 962022878 2518967363 "
+    "1476525873 3865977235 2128790058 2380326689 "
+    "1396773405 312559410 1370621899 1154499924 "
+    "2963101919 2182689761 2071851902 1661288848 "
+    "2411351341 1362764020 1289894483 1951662807 "
+    "701821506 552267185 2356648449 3949188503 "
+    "1748307081 87795201 3718396254 4112205936 "
+    "2819888864 73923733 2800033151 839258139 "
+    "3801779069 3105962436 2111266436 1772784466 "
+    "3692264298 4148810953 3147390749 3537518553 "
+    "1695044978 1430225842 1252346204 3465285434 "
+    "3970017763 2920658411 2805151132 290569815 "
+    "3802301355 1493420394 1943029276 1667143611 "
+    "1049665988 1710824905 220168517 3997946231 "
+    "1014582791 4244598752 1147604069 2533886627 "
+    "598679964 761521020 431779255 3745982038 "
+    "768658283 3598262505 1765664789 279538641 "
+    "715144305 2371628432 2655860083 1759010423 "
+    "3568452003 1910107098 2801429529 3924547532 "
+    "3862672436 3933725740 1764550618 130893617 "
+    "1460692387 4135312761 2075529299 2880227367 "
+    "944557368 4166665482 2627749235 3732013815 "
+    "1595900818 1553312393 3529311831 3531462424 "
+    "2431328342 4075369692 1609967709 3704537555 "
+    "2067297464 397140475 920618678 2840795964 "
+    "4202512837 1286017648 7035910 1057207826 "
+    "2325188262 191593698 3697383848 3029712831 "
+    "2073681914 163454681 1329637200 290077398 "
+    "287239431 4205081522 1233889024 167173087 "
+    "3267660257 3406068803 2382354609 1680046927 "
+    "125183503 3559536309 3208900974 2912148541 "
+    "2882879316 1937001086 2919729069 892928802 "
+    "4141691387 2507406586 855548593 3418647837 "
+    "4035646154 2410275591 248715645 3180757482 "
+    "1880770722 362912336 2964920095 2319904154 "
+    "1493655850 4240733030 1834485846 1696040454 "
+    "3329457927 1865824694 847759208 1587231623 "
+    "3757294772 1161601118 3630323833 3007722125 "
+    "3726418007 2124238171 1205345 172659797 "
+    "3040354211 885213338 1857049013 447922412 "
+    "719906299 1370059380 1922204800 3960090489 "
+    "1658822644 1529626863 1565927273 3537718771 "
+    "2733237258 2180221377 921910745 2144937687 "
+    "1727603895 1315635304 4023867791 2401834107 "
+    "808854185 2408824497 343935326 185237544 "
+    "746732759 2641236122 4283215329 743609415 "
+    "1134726665 3892851319 1302851263 3473445597 "
+    "1326817414 2702766508 1943179285 4025685468 "
+    "932896770 199392138 2787362875 3450501893 "
+    "3351567147 2461286528 2227605848 2993751114 "
+    "3988215720 1320573368 2866560199 4153194990 "
+    "3007120042 3260751955 3171763740 2111121243 "
+    "3962825228 102681859 3368179132 802089147 "
+    "4029273561 424939445 4178414761 2592125109 "
+    "1960801088 2967746406 310701990 2364200202 "
+    "1320507009 3474372480 784693947 2952246664 "
+    "1891935330 2048385105 3530082191 3238151038 "
+    "3293189141 1316053288 2087004409 740799958 "
+    "1187748554 3607767334 1190185990 1408429481 "
+    "657134359 221834425 3907725865 1068016389 "
+    "1402423875 2598612116 2046886300 2345022518 "
+    "1196081924 357783981 4013683598 463491626 "
+    "3269206482 3332444286 886491955 2257342866 "
+    "475911113 833576299 2893727564 2866985145 "
+    "1413365115 2995166393 1486060436 161205225 "
+    "3181728373 3056027137 2040371876 2182305146 "
+    "3028448628 2214316977 1266227021 876938740 "
+    "276477469 752158077 2182179045 1381698878 "
+    "3424557652 666674427 968327842 2534296575 "
+    "265105940 961112540 2641188117 2319139814 "
+    "1750453329 3450138343 678025317 1477566458 "
+    "3773796420 2933993832 3326042905 4084805260 "
+    "444182455 255333481 785163068 2321290820 "
+    "2893603234 3005520266 541104079 1383277090 "
+    "2770755666 3764627833 583371929 2864949033 "
+    "1487681116 1811788361 240329486 3094213377 "
+    "958509875 2564379085 1636995945 2070894127 "
+    "2139004232 1747850055 3841512327 3325011872 "
+    "1161622604 639182193 3533652535 4022667522 "
+    "761048999 3337743670 254221568 2784956233 "
+    "2990252814 4207922787 275707208 261819597 "
+    "2071467265 4034945770 1999813410 3038921100 "
+    "2200194573 1328217451 2440612380 3862293692 "
+    "2733976812 2750523058 2920082515 3809044908 "
+    "4285231753 3131963297 3481602724 1396460739 "
+    "2011767965 2481047764 2958452120 3044188618 "
+    "2217236658 3448605566 757716104 1818279145 "
+    "2641228144 1312649639 1194087684 3845229729 "
+    "1747658356 874418803 1956637337 268670179 "
+    "2083040240 2577671381 3375334655 2587828868 "
+    "1383012799 3583445685 2594576715 3282337104 "
+    "4257972751 3440488071 3129180313 1830891395 "
+    "1594931092 2680778339 3984026324 1102770400 "
+    "2315820258 1263467048 1133254110 2400676748 "
+    "2251795328 1036154092 3313541051 2277356560 "
+    "1477696003 1417117088 3968537402 1404882202 "
+    "2011058180 4114080985 1727459502 4100235708 "
+    "2334509310 2829432554 377936301 1519324520 "
+    "3252826644 1193335837 1929125820 2165344238 "
+    "4160556243 223340988 670907625 1485396519 "
+    "936389509 3813712964 2706450987 3132506320 "
+    "875886515 557088991 2854916639 2955496008 "
+    "2881696287 265169077 3239923698 3649366121 "
+    "4072165960 1233904959 225406526 1767368993 "
+    "1894882500 2296582180 339255168 83200939 "
+    "2958376148 4100205346 1991250823 3806183082 "
+    "2691709980 2642354997 3024056146 1681065839 "
+    "3438299684 1638853652 362567001 2307868899 "
+    "988801086 1342833399 2303298376 1500039911 "
+    "765489391 4080464497 4155444368 980472018 "
+    "2026981853 3460406995 391970367 667377014 "
+    "4177754853 2657468948 3560690175 3030464357 "
+    "2948380657 1208800977 2316451404 4001932203 "
+    "1977856863 4265848271 3116200050 3037586215 "
+    "1335232764 930230766 1026089249 2482219415 "
+    "2613853154 1854543497 2909555107 3862874043 "
+    "2609355500 907364682 383900687 358164223 "
+    "232347546 2536276737 3118482806 1254103998 "
+    "2357334077 1204777304 1996643329 4046232717 "
+    "2570520290 3173323380 1201411457 2361883023 "
+    "806087062 2984143714 2355127569 864220085 "
+    "1787696713 1182652984 4200065581 100722519 "
+    "2380458669 2429592313 2618338302 1236529564 "
+    "1747130196 3711661325 1114068102 510380433 "
+    "93703089 2277774664 3220741441 1577998569 "
+    "2816701900 4206763045 2495239107 4080390459 "
+    "1307072677 20360728 1468385549 96049834 "
+    "3630657447 2809517346 3396111678 3043831060 "
+    "673178359 4256729562 1755211210 1969834535 "
+    "498315110 3717726302 1544859987 2239930949 "
+    "1595372585 294525219 3961637067 3591840665 "
+    "3324896933 2300077772 721255886 4197934760 "
+    "1468866696 2184812884 628246683 3385113037 "
+    "3041166140 3948531843 1176600829 228286131 "
+    "2447397608 712235937 3332826819 2676980703 "
+    "4019468871 1952389952 1202638254 3625447051";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::mt19937 e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+void
+test2()
+{
+    const char* a = "17895233847644109640 14665081038668852234 15987230621890949369 "
+    "13796324649827964148 1670828176732799955 14078505147839608672 "
+    "15497470967856861790 9566640372296747182 7839811585250789315 "
+    "1350068003782415071 5639936432479386921 15925388701147119804 "
+    "17415323390466493342 3892358083553387400 13485903346102334794 "
+    "16926193162581531132 2711398308226914244 12515538113016451944 "
+    "13856492368211347055 17968472785843263993 16129117710261673051 "
+    "13041638543181171650 8985803498136324582 401118717516975186 "
+    "7221524024767248666 13502820261231663498 8665119664667372350 "
+    "4506836866186850029 14762924585995667460 7305266389803732087 "
+    "9135600275824854713 8421320656548229332 14585303533697565624 "
+    "13062167967956981222 15285580395823625260 17451830328116466708 "
+    "17363259891080004456 13238190509560321740 10142215382802200927 "
+    "3224236118694175902 15382517208605932923 10818882444738383326 "
+    "16604245792882032433 10223425285179753002 1342432445403828765 "
+    "4958539418185107403 9374581143772158175 7135181273441366910 "
+    "5853026900476841261 8382327930174454355 2371969498930803266 "
+    "16961635468480846337 377077518789053577 17661790013255465310 "
+    "317500018453124832 3604586262706855295 13340007089026272125 "
+    "7614051306438090372 17819007364113857386 15193526497275633437 "
+    "6142773218979108210 14883287611587512668 12544132362002344419 "
+    "1247987855434921372 6414191755211735979 7160327288923375132 "
+    "7347937017206972868 17171048313531629893 18230412825496997383 "
+    "10882960195884354661 3270707876715241884 16088870345045208503 "
+    "15454419782166694763 1200609322828949525 10186066554418904177 "
+    "7554892242763986291 8203847521335919011 16855803304338943001 "
+    "16895223408596071476 562183806034700250 17761033068687156643 "
+    "12370482348384718931 17895691979506634040 16028877286272943475 "
+    "6671425930002400146 15167515621662197335 17503579548680921174 "
+    "15910867647138768989 1705705354110203064 12201125760909412022 "
+    "5523403744441352645 4540673037752294406 822888669354888870 "
+    "13012517529113958824 702032511346794490 1245872939048413008 "
+    "18060687614291143943 718002942670251776 14628954120078526945 "
+    "7215746609592654001 15288092036204733967 12507582747898016110 "
+    "8319356319569362772 3835100005166188461 10769229288786702843 "
+    "14682980657311687345 10352054841727718090 13661249361946024317 "
+    "1558696616315734178 9963912474249467679 18213809676410642730 "
+    "7284438284457478230 8013656044128665351 6817107912809760616 "
+    "4989038816564331700 12918068165960947833 9123533477086273623 "
+    "741568181450204257 3801962339733348259 1923812112542486965 "
+    "5884360231397942779 17008459141377852544 6569697353326895092 "
+    "15194386425456240489 9363979514988323850 9212437218544795097 "
+    "5650610605870621879 10315798944006232463 10345822437227504297 "
+    "795589193815296350 11344022765750598871 3193778122705907169 "
+    "16719669104430190089 14918335244853046975 11608293761910939782 "
+    "17290187430985633813 856382712722415618 14819792788008454203 "
+    "10571145147196955435 12858063129221173592 5671819431516788648 "
+    "17837836658827607239 14004823010100183722 9067196699747632668 "
+    "441015230260308492 3444946658209715644 1825101023084664281 "
+    "11133092574473850025 12746373758552339264 10154162549097295782 "
+    "14922316177042921089 12679802872389794491 8797747037480461410 "
+    "13907752811248535439 5652405835046458389 3181711594575177977 "
+    "15495242712294857418 6049158560807439366 952771601159099159 "
+    "4587095466254740009 11160954054611782211 10071795025240457628 "
+    "1536670498623767300 1990681379653546894 14312739227381277138 "
+    "9695213786215402291 3580182943401628617 12313607438786545484 "
+    "12864141705426648443 692371170805382036 13125536612285239925 "
+    "9372929234002877092 9510419002221032820 3766423210161674061 "
+    "3230494342413727261 5934351496112072933 2863344864469097044 "
+    "10884720908958139042 4127946927340597780 9960629658622711061 "
+    "14818231351611083857 6346099615454582885 12601407558879514692 "
+    "17544105005554819865 1096648950913019831 9969868157190185788 "
+    "12908611252828823970 5941129863397152719 16168953427117105234 "
+    "12304862402025196697 7781571759256122972 13289545261301048078 "
+    "11013924305579914035 8894422550580466537 7506958826675805512 "
+    "14280817252893250439 2745266616282182732 17277225453205013047 "
+    "14335499905842065319 11961295941780577536 18072890757248426766 "
+    "1124506606842606920 17329960125355005185 13052066741624159010 "
+    "5704650516221677069 16588425097127709212 11813406583737887980 "
+    "16359723311775411283 13451679937172566665 5997753207634594468 "
+    "10656019008205694109 13074690560123889048 14811648124990806194 "
+    "7809449463531558024 5637787273252434288 16515135932856030468 "
+    "3755600163640125044 1153929634172103321 11071014283313196016 "
+    "11114640359080035583 15390782025450330559 14097530518721927499 "
+    "14776783751481098767 7863618667181998233 11513855295425132436 "
+    "4736362806980864724 5426549653049482466 10310828122060887518 "
+    "4450247941008370560 9781171949844602811 6086471549040450051 "
+    "6033923116291003194 17669843285681524740 17610378273478865070 "
+    "12152320288002263294 6525449125788834221 5125338396312613396 "
+    "9300082688721166268 959242243476884691 6379729471368150249 "
+    "16379772457647614853 13454012201619761707 2392678998182524851 "
+    "12693758700673471007 1138892516507202079 15673908144065302514 "
+    "5299581449349386824 7590792025124859454 9863745357571267780 "
+    "357345312340746112 17610247870912740564 16347431861769737095 "
+    "11348828299228888092 7220122803951857490 7038822841708464676 "
+    "9912221445023094105 5767425533670320190 6442622362743049032 "
+    "17525461567869579503 4211095256108567696 14862334876401617373 "
+    "2866362449624104511 11413742225973279461 13015745308569358847 "
+    "5191760666536228849 17188167935010684492 18321678815621002079 "
+    "13046333455321624690 3995310719038261500 10661051209947341089 "
+    "7965203671238327266 16590917686161852835 3897101637344795372 "
+    "1538303624766151695 10893225639252940698 5386335660311332214 "
+    "5174479122000384061 17378437193516866561 13629320139302700770 "
+    "10144210341964027265 12816799659000064406 3711797003976467729 "
+    "5079455890584507977 432599929275804205 10435019529328454317 "
+    "5310854040535477246 15941464006450157396 2192067269367387270 "
+    "9782967689631091633 6777452250210540865 18067909703113078220 "
+    "17525143578810667971 87448662189824165 412530897284614413 "
+    "12066785122245373863 13073154860645125438 18282514257379582711 "
+    "8460374908111578570 15967512883067334502 9620430172798103891 "
+    "1264976185047610409 15426838192579528907 9878758812321441445 "
+    "18029992505662864846 9383699886128308360 14538949787806484635 "
+    "16958815135940772668 980481467951972605 3059030058898313960 "
+    "11497544574740915907 8385450996898478663 15571176518627282350";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::mt19937_64 e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_sseq_all_zero.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_sseq_all_zero.pass.cpp
new file mode 100644
index 0000000..ae5a3e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/ctor_sseq_all_zero.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t,
+//           UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// template <class Sseq> explicit mersenne_twister_engine(Sseq &q);
+//
+//     [ ... ] Finally, if the most significant $w-r$ bits of $X_{-n}$ are zero,
+//     and if each of the other resulting $X_i$ is $0$, changes $X_{-n}$ to
+//     $ 2^{w-1} $.
+
+#include <random>
+
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct all_zero_seed_seq {
+  typedef unsigned int result_type;
+
+  all_zero_seed_seq() {}
+
+  template <typename InputIterator>
+  all_zero_seed_seq(InputIterator, InputIterator) {}
+#if TEST_STD_VER >= 11
+  all_zero_seed_seq(std::initializer_list<result_type>) {}
+#endif
+
+  template <typename RandomAccessIterator>
+  void generate(RandomAccessIterator rb, RandomAccessIterator re) {
+    std::fill(rb, re, 0u);
+  }
+
+  std::size_t size() const { return 0u; }
+  template <typename OutputIterator> void param(OutputIterator) const {}
+};
+
+template <typename result_type, std::size_t word_size>
+void test(void) {
+  const std::size_t state_size = 1u;
+  const std::size_t shift_size = 1u;
+  const std::size_t tempering_l = word_size;
+
+  all_zero_seed_seq q;
+  std::mersenne_twister_engine<result_type, word_size, state_size,
+                               shift_size,
+                               0u,
+                               0x0,
+                               0u, 0x0, 0u, 0x0, 0u, 0x0,
+                               tempering_l,
+                               0u>
+      e(q);
+
+  const result_type Xneg1 = result_type(1) << (word_size - 1);
+  const result_type Y = Xneg1;
+  const result_type X0 = Xneg1 ^ (Y >> 1);
+  assert(e() == X0);
+}
+
+int main(int, char**) {
+  // Test for k == 1: word_size <= 32.
+  test<unsigned short, 3u>();
+
+  // Test for k == 2: (32 < word_size <= 64).
+  test<unsigned long long, 33u>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/default.pass.cpp
new file mode 100644
index 0000000..ddb0061
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/default.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// explicit mersenne_twister_engine();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::mt19937 e1;
+    std::mt19937 e2(std::mt19937::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 3499211612u);
+}
+
+void
+test2()
+{
+    std::mt19937_64 e1;
+    std::mt19937_64 e2(std::mt19937_64::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 14514284786278117030ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/discard.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/discard.pass.cpp
new file mode 100644
index 0000000..702edbb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/discard.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::mt19937 e1;
+    std::mt19937 e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    std::mt19937_64 e1;
+    std::mt19937_64 e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/eval.pass.cpp
new file mode 100644
index 0000000..9f51eda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/eval.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::mt19937 e;
+    assert(e() == 3499211612u);
+    assert(e() == 581869302u);
+    assert(e() == 3890346734u);
+}
+
+void
+test2()
+{
+    std::mt19937_64 e;
+    assert(e() == 14514284786278117030ull);
+    assert(e() == 4620546740167642908ull);
+    assert(e() == 13109570281517897720ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/io.pass.cpp
new file mode 100644
index 0000000..c83e53f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/io.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// template <class charT, class traits,
+//           class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const mersenne_twister_engine<UIntType, w, n, m, r, a, u, d, s, b, t, c, l, f>& x);
+//
+// template <class charT, class traits,
+//           class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// basic_ostream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            mersenne_twister_engine<UIntType, w, n, m, r, a, u, d, s, b, t, c, l, f>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::mt19937 E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::mt19937_64 E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/result_type.pass.cpp
new file mode 100644
index 0000000..b407b09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/result_type.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    static_assert((std::is_same<
+        std::mt19937::result_type,
+        std::uint_fast32_t>::value), "");
+}
+
+void
+test2()
+{
+    static_assert((std::is_same<
+        std::mt19937_64::result_type,
+        std::uint_fast64_t>::value), "");
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_result_type.pass.cpp
new file mode 100644
index 0000000..3212a8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_result_type.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// void seed(result_type s = default_seed);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::mt19937 E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+void
+test2()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::mt19937_64 E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp
new file mode 100644
index 0000000..78285ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/seed_sseq.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine;
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::mt19937 e1;
+    std::mt19937 e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::mt19937_64 e1;
+    std::mt19937_64 e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp
new file mode 100644
index 0000000..1af1d85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.mers/values.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template <class UIntType, size_t w, size_t n, size_t m, size_t r,
+//           UIntType a, size_t u, UIntType d, size_t s,
+//           UIntType b, size_t t, UIntType c, size_t l, UIntType f>
+// class mersenne_twister_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+//
+//     // engine characteristics
+//     static constexpr size_t word_size = w;
+//     static constexpr size_t state_size = n;
+//     static constexpr size_t shift_size = m;
+//     static constexpr size_t mask_bits = r;
+//     static constexpr result_type xor_mask = a;
+//     static constexpr size_t tempering_u = u;
+//     static constexpr result_type tempering_d = d;
+//     static constexpr size_t tempering_s = s;
+//     static constexpr result_type tempering_b = b;
+//     static constexpr size_t tempering_t = t;
+//     static constexpr result_type tempering_c = c;
+//     static constexpr size_t tempering_l = l;
+//     static constexpr result_type initialization_multiplier = f;
+//     static constexpr result_type min () { return 0; }
+//     static constexpr result_type max() { return 2^w - 1; }
+//     static constexpr result_type default_seed = 5489u;
+
+#include <random>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void where(const T &) {}
+
+void
+test1()
+{
+    typedef std::mt19937 E;
+    static_assert((E::word_size == 32), "");
+    static_assert((E::state_size == 624), "");
+    static_assert((E::shift_size == 397), "");
+    static_assert((E::mask_bits == 31), "");
+    static_assert((E::xor_mask == 0x9908b0df), "");
+    static_assert((E::tempering_u == 11), "");
+    static_assert((E::tempering_d == 0xffffffff), "");
+    static_assert((E::tempering_s == 7), "");
+    static_assert((E::tempering_b == 0x9d2c5680), "");
+    static_assert((E::tempering_t == 15), "");
+    static_assert((E::tempering_c == 0xefc60000), "");
+    static_assert((E::tempering_l == 18), "");
+    static_assert((E::initialization_multiplier == 1812433253), "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFFFF), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFFFF));
+#endif
+    static_assert((E::default_seed == 5489u), "");
+    where(E::word_size);
+    where(E::state_size);
+    where(E::shift_size);
+    where(E::mask_bits);
+    where(E::xor_mask);
+    where(E::tempering_u);
+    where(E::tempering_d);
+    where(E::tempering_s);
+    where(E::tempering_b);
+    where(E::tempering_t);
+    where(E::tempering_c);
+    where(E::tempering_l);
+    where(E::initialization_multiplier);
+    where(E::default_seed);
+}
+
+void
+test2()
+{
+    typedef std::mt19937_64 E;
+    static_assert((E::word_size == 64), "");
+    static_assert((E::state_size == 312), "");
+    static_assert((E::shift_size == 156), "");
+    static_assert((E::mask_bits == 31), "");
+    static_assert((E::xor_mask == 0xb5026f5aa96619e9ull), "");
+    static_assert((E::tempering_u == 29), "");
+    static_assert((E::tempering_d == 0x5555555555555555ull), "");
+    static_assert((E::tempering_s == 17), "");
+    static_assert((E::tempering_b == 0x71d67fffeda60000ull), "");
+    static_assert((E::tempering_t == 37), "");
+    static_assert((E::tempering_c == 0xfff7eee000000000ull), "");
+    static_assert((E::tempering_l == 43), "");
+    static_assert((E::initialization_multiplier == 6364136223846793005ull), "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFFFFFFFFFFFFull), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFFFFFFFFFFFFull));
+#endif
+    static_assert((E::default_seed == 5489u), "");
+    where(E::word_size);
+    where(E::state_size);
+    where(E::shift_size);
+    where(E::mask_bits);
+    where(E::xor_mask);
+    where(E::tempering_u);
+    where(E::tempering_d);
+    where(E::tempering_s);
+    where(E::tempering_b);
+    where(E::tempering_t);
+    where(E::tempering_c);
+    where(E::tempering_l);
+    where(E::initialization_multiplier);
+    where(E::default_seed);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/assign.pass.cpp
new file mode 100644
index 0000000..fa788b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/assign.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// subtract_with_carry_engine& operator=(const subtract_with_carry_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::ranlux24_base E;
+    E e1(2);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48_base E;
+    E e1(3);
+    (void)e1();
+    E e2(5);
+    e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/copy.pass.cpp
new file mode 100644
index 0000000..ce7f382
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/copy.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// subtract_with_carry_engine(const subtract_with_carry_engine&);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::ranlux24_base E;
+    E e1;
+    (void)e1();
+    E e2 = e1;
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48_base E;
+    E e1;
+    (void)e1();
+    E e2(e1);
+    assert(e1 == e2);
+    assert(e1() == e2());
+    E::result_type k = e1();
+    assert(e1 != e2);
+    assert(e2() == k);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_result_type.pass.cpp
new file mode 100644
index 0000000..291dbf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_result_type.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// explicit subtract_with_carry_engine(result_type s = default_seed);         // before C++20
+// subtract_with_carry_engine() : subtract_with_carry_engine(default_seed) {} // C++20
+// explicit subtract_with_carry_engine(result_type s);                        // C++20
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "make_implicit.h"
+#include "test_convertible.h"
+#endif
+
+template <class T>
+std::string
+to_string(T const &e)
+{
+    std::ostringstream os;
+    os << e;
+    return os.str();
+}
+
+void
+test1()
+{
+    const char* a = "15136306 8587749 2346244 16479026 15515802 9510553 "
+    "16090340 14501685 13839944 10789678 11581259 9590790 5840316 5953700 "
+    "13398366 8134459 16629731 6851902 15583892 1317475 4231148 9092691 "
+    "5707268 2355175 0";
+    std::ranlux24_base e1(0);
+    assert(to_string(e1) == a);
+}
+
+void
+test2()
+{
+    const char* a = "10880375256626 126660097854724 33643165434010 "
+    "78293780235492 179418984296008 96783156950859 238199764491708 "
+    "34339434557790 155299155394531 29014415493780 209265474179052 "
+    "263777435457028 0";
+    std::ranlux48_base e1(0);
+    assert(to_string(e1) == a);
+}
+
+#if TEST_STD_VER >= 11
+template <class E>
+void test_implicit_ctor() {
+  assert(E(E::default_seed) == make_implicit<E>());
+}
+#endif
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+#if TEST_STD_VER >= 11
+    static_assert(test_convertible<std::ranlux24_base>(), "");
+    static_assert(test_convertible<std::ranlux48_base>(), "");
+    test_implicit_ctor<std::ranlux24_base>();
+    test_implicit_ctor<std::ranlux48_base>();
+    static_assert(!test_convertible<std::ranlux24_base, uint_fast32_t>(), "");
+    static_assert(!test_convertible<std::ranlux48_base, uint_fast64_t>(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_sseq.pass.cpp
new file mode 100644
index 0000000..16db083
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_sseq.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// template<class Sseq> explicit subtract_with_carry_engine(Sseq& q);
+
+// Serializing/deserializing the state of the RNG requires iostreams
+// UNSUPPORTED: no-localization
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    const char* a = "13604817 711567 9760686 13278398 3323440 175548 5553651 "
+    "3028863 10748297 2216688 275779 14778841 14438394 9483441 4229545 "
+    "14657301 12636508 15978210 1653340 1718567 9272421 14302862 7940348 "
+    "889045 0";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::ranlux24_base e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+void
+test2()
+{
+    const char* a = "241408498702289 172342669275054 191026374555184 "
+    "61020585639411 231929771458953 142769679250755 198672786411514 "
+    "183712717244841 227473912549724 62843577252444 68782400568421 "
+    "159248704678140 0";
+    unsigned as[] = {3, 5, 7};
+    std::seed_seq sseq(as, as+3);
+    std::ranlux48_base e1(sseq);
+    std::ostringstream os;
+    os << e1;
+    assert(os.str() == a);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/default.pass.cpp
new file mode 100644
index 0000000..0ee6a15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/default.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// explicit subtract_with_carry_engine();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::ranlux24_base e1;
+    std::ranlux24_base e2(std::ranlux24_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 15039276);
+}
+
+void
+test2()
+{
+    std::ranlux48_base e1;
+    std::ranlux48_base e2(std::ranlux48_base::default_seed);
+    assert(e1 == e2);
+    assert(e1() == 23459059301164ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/discard.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/discard.pass.cpp
new file mode 100644
index 0000000..d111571
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/discard.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// void discard(unsigned long long z);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::ranlux24_base e1;
+    std::ranlux24_base e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    std::ranlux48_base e1;
+    std::ranlux48_base e2 = e1;
+    assert(e1 == e2);
+    e1.discard(3);
+    assert(e1 != e2);
+    (void)e2();
+    (void)e2();
+    (void)e2();
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/eval.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/eval.pass.cpp
new file mode 100644
index 0000000..b41b9de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/eval.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// result_type operator()();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::ranlux24_base e;
+    assert(e() == 15039276u);
+    assert(e() == 16323925u);
+    assert(e() == 14283486u);
+}
+
+void
+test2()
+{
+    std::ranlux48_base e;
+    assert(e() == 23459059301164ull);
+    assert(e() == 28639057539807ull);
+    assert(e() == 276846226770426ull);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/io.pass.cpp
new file mode 100644
index 0000000..b5a8e77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/io.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// template <class charT, class traits,
+//           class UIntType, size_t w, size_t s, size_t r>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os,
+//            const subtract_with_carry_engine<UIntType, w, s, r>& x);
+//
+// template <class charT, class traits,
+//           class UIntType, size_t w, size_t s, size_t r>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is,
+//            subtract_with_carry_engine<UIntType, w, s, r>& x);
+
+#include <random>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    typedef std::ranlux24_base E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48_base E;
+    E e1;
+    e1.discard(100);
+    std::ostringstream os;
+    os << e1;
+    std::istringstream is(os.str());
+    E e2;
+    is >> e2;
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/result_type.pass.cpp
new file mode 100644
index 0000000..2406b77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/result_type.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    static_assert((std::is_same<
+        std::ranlux24_base::result_type,
+        std::uint_fast32_t>::value), "");
+}
+
+void
+test2()
+{
+    static_assert((std::is_same<
+        std::ranlux48_base::result_type,
+        std::uint_fast64_t>::value), "");
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/seed_result_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/seed_result_type.pass.cpp
new file mode 100644
index 0000000..7eef6b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/seed_result_type.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// void seed(result_type s = default_seed);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::ranlux24_base E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+void
+test2()
+{
+    for (int s = 0; s < 20; ++s)
+    {
+        typedef std::ranlux48_base E;
+        E e1(s);
+        E e2;
+        e2.seed(s);
+        assert(e1 == e2);
+    }
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/seed_sseq.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/seed_sseq.pass.cpp
new file mode 100644
index 0000000..99ce46f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/seed_sseq.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine;
+
+// template<class Sseq> void seed(Sseq& q);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void
+test1()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::ranlux24_base e1;
+    std::ranlux24_base e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+void
+test2()
+{
+    unsigned a[] = {3, 5, 7};
+    std::seed_seq sseq(a, a+3);
+    std::ranlux48_base e1;
+    std::ranlux48_base e2(sseq);
+    assert(e1 != e2);
+    e1.seed(sseq);
+    assert(e1 == e2);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/values.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/values.pass.cpp
new file mode 100644
index 0000000..a877eff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/values.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class UIntType, size_t w, size_t s, size_t r>
+// class subtract_with_carry_engine
+// {
+// public:
+//     // types
+//     typedef UIntType result_type;
+//
+//     // engine characteristics
+//     static constexpr size_t word_size = w;
+//     static constexpr size_t short_lag = s;
+//     static constexpr size_t long_lag = r;
+//     static constexpr result_type min() { return 0; }
+//     static constexpr result_type max() { return m-1; }
+//     static constexpr result_type default_seed = 19780503u;
+
+#include <random>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+void where(const T &) {}
+
+void
+test1()
+{
+    typedef std::ranlux24_base E;
+    static_assert((E::word_size == 24), "");
+    static_assert((E::short_lag == 10), "");
+    static_assert((E::long_lag == 24), "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFF), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFF));
+#endif
+    static_assert((E::default_seed == 19780503u), "");
+    where(E::word_size);
+    where(E::short_lag);
+    where(E::long_lag);
+    where(E::default_seed);
+}
+
+void
+test2()
+{
+    typedef std::ranlux48_base E;
+    static_assert((E::word_size == 48), "");
+    static_assert((E::short_lag == 5), "");
+    static_assert((E::long_lag == 12), "");
+#if TEST_STD_VER >= 11
+    static_assert((E::min() == 0), "");
+    static_assert((E::max() == 0xFFFFFFFFFFFFull), "");
+#else
+    assert((E::min() == 0));
+    assert((E::max() == 0xFFFFFFFFFFFFull));
+#endif
+    static_assert((E::default_seed == 19780503u), "");
+    where(E::word_size);
+    where(E::short_lag);
+    where(E::long_lag);
+    where(E::default_seed);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/default_random_engine.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/default_random_engine.pass.cpp
new file mode 100644
index 0000000..b06cd46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/default_random_engine.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef minstd_rand0 default_random_engine;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::default_random_engine e;
+    e.discard(9999);
+    LIBCPP_ASSERT(e() == 399268537u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/knuth_b.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/knuth_b.pass.cpp
new file mode 100644
index 0000000..02a142b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/knuth_b.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef shuffle_order_engine<minstd_rand0, 256>                      knuth_b;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::knuth_b e;
+    e.discard(9999);
+    assert(e() == 1112339016u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/minstd_rand.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/minstd_rand.pass.cpp
new file mode 100644
index 0000000..1115eb8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/minstd_rand.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef linear_congruential_engine<uint_fast32_t, 48271, 0, 2147483647>
+//                                                                 minstd_rand;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::minstd_rand e;
+    e.discard(9999);
+    assert(e() == 399268537u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/minstd_rand0.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/minstd_rand0.pass.cpp
new file mode 100644
index 0000000..993b28c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/minstd_rand0.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef linear_congruential_engine<uint_fast32_t, 16807, 0, 2147483647>
+//                                                                 minstd_rand0;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::minstd_rand0 e;
+    e.discard(9999);
+    assert(e() == 1043618065u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/mt19937.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/mt19937.pass.cpp
new file mode 100644
index 0000000..0e47b6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/mt19937.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef mersenne_twister_engine<uint_fast32_t, 32, 624, 397, 31,
+//                                 0x9908b0df,
+//                                 11, 0xffffffff,
+//                                 7,  0x9d2c5680,
+//                                 15, 0xefc60000,
+//                                 18, 1812433253>                      mt19937;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::mt19937 e;
+    e.discard(9999);
+    assert(e() == 4123659995u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/mt19937_64.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/mt19937_64.pass.cpp
new file mode 100644
index 0000000..b2bd5d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/mt19937_64.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef mersenne_twister_engine<uint_fast64_t, 64, 312, 156, 31,
+//                                 0xb5026f5aa96619e9,
+//                                 29, 0x5555555555555555,
+//                                 17, 0x71d67fffeda60000,
+//                                 37, 0xfff7eee000000000,
+//                                 43, 6364136223846793005>          mt19937_64;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::mt19937_64 e;
+    e.discard(9999);
+    assert(e() == 9981545732273789042ull);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux24.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux24.pass.cpp
new file mode 100644
index 0000000..ba64854
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux24.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef discard_block_engine<ranlux24_base, 223, 23>                ranlux24;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ranlux24 e;
+    e.discard(9999);
+    assert(e() == 9901578u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux24_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux24_base.pass.cpp
new file mode 100644
index 0000000..a6227fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux24_base.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef subtract_with_carry_engine<uint_fast32_t, 24, 10, 24>  ranlux24_base;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ranlux24_base e;
+    e.discard(9999);
+    assert(e() == 7937952u);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux48.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux48.pass.cpp
new file mode 100644
index 0000000..2799803
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux48.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef discard_block_engine<ranlux48_base, 389, 11>                ranlux48;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ranlux48 e;
+    e.discard(9999);
+    assert(e() == 249142670248501ull);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux48_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux48_base.pass.cpp
new file mode 100644
index 0000000..a96bc53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.predef/ranlux48_base.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// typedef subtract_with_carry_engine<uint_fast64_t, 48,  5, 12>  ranlux48_base;
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ranlux48_base e;
+    e.discard(9999);
+    assert(e() == 61839128582725ull);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.adapt/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.adapt/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.adapt/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.dst/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.dst/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.dst/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.eng/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.eng/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.eng/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.genl/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.genl/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.genl/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.seedseq/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.seedseq/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.seedseq/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.urng/uniform_random_bit_generator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.urng/uniform_random_bit_generator.compile.pass.cpp
new file mode 100644
index 0000000..bfda9b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.req/rand.req.urng/uniform_random_bit_generator.compile.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept uniform_random_bit_generator = // see below
+
+#include <random>
+
+#include "test_macros.h"
+
+static_assert(std::uniform_random_bit_generator<
+              std::linear_congruential_engine<unsigned int, 0U, 1U, 2U> >);
+
+#ifndef TEST_HAS_NO_INT128
+static_assert(std::uniform_random_bit_generator<
+              std::subtract_with_carry_engine<__uint128_t, 1U, 2U, 3U> >);
+#endif
+
+// Not invocable
+static_assert(!std::uniform_random_bit_generator<void>);
+static_assert(!std::uniform_random_bit_generator<int>);
+static_assert(!std::uniform_random_bit_generator<int[10]>);
+static_assert(!std::uniform_random_bit_generator<int*>);
+static_assert(!std::uniform_random_bit_generator<const int*>);
+static_assert(!std::uniform_random_bit_generator<volatile int*>);
+static_assert(!std::uniform_random_bit_generator<const volatile int*>);
+static_assert(!std::uniform_random_bit_generator<int&>);
+static_assert(!std::uniform_random_bit_generator<const int&>);
+static_assert(!std::uniform_random_bit_generator<volatile int&>);
+static_assert(!std::uniform_random_bit_generator<const volatile int&>);
+static_assert(!std::uniform_random_bit_generator<int&&>);
+static_assert(!std::uniform_random_bit_generator<const int&&>);
+static_assert(!std::uniform_random_bit_generator<volatile int&&>);
+static_assert(!std::uniform_random_bit_generator<const volatile int&&>);
+
+struct Empty {};
+static_assert(!std::uniform_random_bit_generator<Empty>);
+
+namespace WrongReturnType {
+using FunctionPointer = void (*)();
+static_assert(!std::uniform_random_bit_generator<FunctionPointer>);
+
+using FunctionReference = int (&)();
+static_assert(!std::uniform_random_bit_generator<FunctionReference>);
+
+struct FunctionObject {
+  unsigned long* operator()();
+};
+static_assert(!std::uniform_random_bit_generator<FunctionObject>);
+static_assert(!std::uniform_random_bit_generator<unsigned int Empty::*>);
+static_assert(!std::uniform_random_bit_generator<unsigned short (Empty::*)()>);
+} // namespace WrongReturnType
+
+namespace NoMinOrMax {
+using FunctionPointer = unsigned int (*)();
+static_assert(!std::uniform_random_bit_generator<FunctionPointer>);
+
+using FunctionReference = unsigned long long (&)();
+static_assert(!std::uniform_random_bit_generator<FunctionReference>);
+
+struct FunctionObject {
+  unsigned char operator()();
+};
+static_assert(!std::uniform_random_bit_generator<FunctionObject>);
+} // namespace NoMinOrMax
+
+namespace OnlyMinIsRight {
+struct NoMax {
+  unsigned char operator()();
+
+  static unsigned char min();
+};
+static_assert(!std::uniform_random_bit_generator<NoMax>);
+
+struct MaxHasWrongReturnType {
+  unsigned char operator()();
+
+  static unsigned char min();
+  static unsigned int max();
+};
+
+static_assert(!std::uniform_random_bit_generator<MaxHasWrongReturnType>);
+} // namespace OnlyMinIsRight
+
+namespace OnlyMaxIsRight {
+struct NoMin {
+  unsigned char operator()();
+
+  static unsigned char max();
+};
+static_assert(!std::uniform_random_bit_generator<NoMin>);
+
+struct MinHasWrongReturnType {
+  unsigned char operator()();
+
+  static unsigned int min();
+  static unsigned char max();
+};
+
+static_assert(!std::uniform_random_bit_generator<MinHasWrongReturnType>);
+} // namespace OnlyMaxIsRight
+
+namespace MinNotLessMax {
+struct NotConstexpr {
+  unsigned char operator()();
+
+  static unsigned char min();
+  static unsigned char max();
+};
+static_assert(!std::uniform_random_bit_generator<NotConstexpr>);
+
+struct MinEqualsMax {
+  unsigned char operator()();
+
+  static constexpr unsigned char min() { return 0; }
+  static constexpr unsigned char max() { return 0; }
+};
+static_assert(!std::uniform_random_bit_generator<MinEqualsMax>);
+
+struct MaxLessThanMin {
+  unsigned char operator()();
+
+  static constexpr unsigned char min() { return 1; }
+  static constexpr unsigned char max() { return 0; }
+};
+static_assert(!std::uniform_random_bit_generator<MaxLessThanMin>);
+} // namespace MinNotLessMax
+
+struct Works {
+  unsigned char operator()();
+
+  static constexpr unsigned char min() { return 0; }
+  static constexpr unsigned char max() { return 1; }
+};
+static_assert(std::uniform_random_bit_generator<Works>);
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp
new file mode 100644
index 0000000..c21cdd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// template<class RealType, size_t bits, class URNG>
+//     RealType generate_canonical(URNG& g);
+
+#include <random>
+
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+#include "truncate_fp.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::minstd_rand0 E;
+        typedef float F;
+        E r;
+        F f = std::generate_canonical<F, 0>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef float F;
+        E r;
+        F f = std::generate_canonical<F, 1>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef float F;
+        E r;
+        F f = std::generate_canonical<F, std::numeric_limits<F>::digits - 1>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef float F;
+        E r;
+        F f = std::generate_canonical<F, std::numeric_limits<F>::digits>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef float F;
+        E r;
+        F f = std::generate_canonical<F, std::numeric_limits<F>::digits + 1>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+
+    {
+        typedef std::minstd_rand0 E;
+        typedef double F;
+        E r;
+        F f = std::generate_canonical<F, 0>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef double F;
+        E r;
+        F f = std::generate_canonical<F, 1>(r);
+        assert(f == truncate_fp((16807 - E::min()) / (static_cast<F>(E::max() - E::min()) + F(1))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef double F;
+        E r;
+        F f = std::generate_canonical<F, std::numeric_limits<F>::digits - 1>(r);
+        assert(f == truncate_fp(
+            (16807 - E::min() +
+            (282475249 - E::min()) * (static_cast<F>(E::max() - E::min()) + F(1))) /
+            ((static_cast<F>(E::max() - E::min()) + F(1)) * (static_cast<F>(E::max() - E::min()) + F(1)))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef double F;
+        E r;
+        F f = std::generate_canonical<F, std::numeric_limits<F>::digits>(r);
+        assert(f == truncate_fp(
+            (16807 - E::min() +
+            (282475249 - E::min()) * (static_cast<F>(E::max() - E::min()) + F(1))) /
+            ((static_cast<F>(E::max() - E::min()) + F(1)) * (static_cast<F>(E::max() - E::min()) + F(1)))));
+    }
+    {
+        typedef std::minstd_rand0 E;
+        typedef double F;
+        E r;
+        F f = std::generate_canonical<F, std::numeric_limits<F>::digits + 1>(r);
+        assert(f == truncate_fp(
+            (16807 - E::min() +
+            (282475249 - E::min()) * (static_cast<F>(E::max() - E::min()) + F(1))) /
+            ((static_cast<F>(E::max() - E::min()) + F(1)) * (static_cast<F>(E::max() - E::min()) + F(1)))));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/assign.compile.fail.cpp
new file mode 100644
index 0000000..de06a5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/assign.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq;
+
+// seed_seq();
+
+#include <random>
+
+int main(int, char**)
+{
+    std::seed_seq s0;
+    std::seed_seq s;
+    s = s0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/copy.compile.fail.cpp
new file mode 100644
index 0000000..7c3c38e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/copy.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq;
+
+// seed_seq();
+
+#include <random>
+
+int main(int, char**)
+{
+    std::seed_seq s0;
+    std::seed_seq s(s0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/default.pass.cpp
new file mode 100644
index 0000000..c99d5e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/default.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq;
+
+// seed_seq();
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  ASSERT_NOEXCEPT(std::seed_seq());
+  {
+    std::seed_seq s;
+    assert(s.size() == 0);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/generate.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/generate.pass.cpp
new file mode 100644
index 0000000..c7a4779
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/generate.pass.cpp
@@ -0,0 +1,808 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq;
+
+// template<class RandomAccessIterator>
+//     void generate(RandomAccessIterator begin, RandomAccessIterator end);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        // These numbers generated from a slightly altered version of dSFMT
+        //  http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/index.html
+        unsigned a[] =
+        {
+            509928861u,
+            482551238u,
+            141770655u,
+            3445468037u,
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+            1523923100u,
+            538451356u,
+            2872548905u,
+            3122230170u,
+            337087364u,
+            2659340735u,
+            3849128055u,
+            556114376u,
+            1997152544u,
+            3761450839u,
+            3143779940u,
+            3256759779u,
+            2844565122u,
+            228442897u,
+            3589092287u,
+            786119294u,
+            4089515771u,
+            3720982051u,
+            1236422652u,
+            2002271241u,
+            98809947u,
+            1925281885u,
+            3856119646u,
+            3522402037u,
+            2119723860u,
+            3500067577u,
+            3688915105u,
+            443441159u,
+            1795715271u,
+            2772968214u,
+            921416086u,
+            4274010930u,
+            3123194886u,
+            4156595625u,
+            2153773382u,
+            1880645824u,
+            1783695477u,
+            2639075904u,
+            2369609874u,
+            2020298024u,
+            3035677150u,
+            20152938u,
+            3700162244u,
+            2301383878u,
+            704787941u,
+            1912605772u,
+            801557569u,
+            3080244537u,
+            2116665331u,
+            2452111071u,
+            3506260614u,
+            862540580u,
+            1275699972u,
+            66210903u,
+            106773917u,
+            3693457478u,
+            2402783622u,
+            1239121180u,
+            676003037u,
+            2603048829u,
+            1725001637u,
+            1220274379u,
+            24507488u,
+            903764486u,
+            4189545897u,
+            1702746631u,
+            3218068652u,
+            3306659191u,
+            790973134u,
+            1265526960u,
+            3431804268u,
+            3325211765u,
+            3605213000u,
+            2877687268u,
+            2252987926u,
+            2380945092u,
+            858624424u,
+            1002964636u,
+            1862801950u,
+            1624111941u,
+            2506763607u,
+            760658520u,
+            2734479345u,
+            3411969548u,
+            771362694u,
+            3655222003u,
+            2713412965u,
+            2617767046u,
+            1779451182u,
+            3696950253u,
+            1494085808u,
+            1423735456u,
+            800705781u,
+            3797847307u,
+            3518984231u,
+            196474988u,
+            1813335502u,
+            2243046583u,
+            2578707704u,
+            2592488572u,
+            4085007200u,
+            3609770110u,
+            2731535571u,
+            3190540952u,
+            1865257805u,
+            1804143221u,
+            3166875197u,
+            1184225570u,
+            2013135819u,
+            3678444101u,
+            2569887572u,
+            3559018477u,
+            3823772506u,
+            1537738480u,
+            713705243u,
+            792081862u,
+            1581340885u,
+            3140030205u,
+            3435723625u,
+            3093218524u,
+            3683643763u,
+            753869336u,
+            590258834u,
+            608176704u,
+            180732483u,
+            31365344u,
+            29753898u,
+            2899243456u,
+            1020423361u,
+            152655309u,
+            3809554076u,
+            2069071231u,
+            4000441303u,
+            3046501174u,
+            1897816893u,
+            1610689080u,
+            2580357110u,
+            255270539u,
+            3363490012u,
+            3711397066u,
+            3983751767u,
+            1725231855u,
+            172296475u,
+            2179003295u,
+            660196982u,
+            526538193u,
+            2137670317u,
+            2219075701u,
+            1987239722u,
+            856404486u,
+            2976933454u,
+            3678014122u,
+            2713682703u,
+            3329090001u,
+            2248358519u,
+            3254616418u,
+            1747030903u,
+            1620566606u,
+            880370315u,
+            2337236788u,
+            2883145755u
+        };
+        const int n = 768;
+        unsigned b[n] = {0};
+        unsigned v[] = {3, 5, 7};
+        const int size = sizeof(v)/sizeof(v[0]);
+        std::seed_seq s(v, v + size);
+        s.generate(b, b + n);
+        for (int i = 0; i < n; ++i)
+            assert(a[i] == b[i]);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/initializer_list.pass.cpp
new file mode 100644
index 0000000..9bfdb4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/initializer_list.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <random>
+
+// class seed_seq;
+
+// template<class T>
+//     seed_seq(initializer_list<T> il);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::seed_seq s= {5, 4, 3, 2, 1};
+    assert(s.size() == 5);
+    unsigned b[5] = {0};
+    s.param(b);
+    assert(b[0] == 5);
+    assert(b[1] == 4);
+    assert(b[2] == 3);
+    assert(b[3] == 2);
+    assert(b[4] == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/iterator.pass.cpp
new file mode 100644
index 0000000..1dd9a05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/iterator.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq;
+
+// template<class InputIterator>
+//     seed_seq(InputIterator begin, InputIterator end);
+
+#include <random>
+#include <cassert>
+
+#include "test_macros.h"
+
+void test()
+{
+  {
+    unsigned a[5] = {5, 4, 3, 2, 1};
+    std::seed_seq s(a, a+5);
+    assert(s.size() == 5);
+
+    unsigned b[5] = {0};
+    s.param(b);
+    assert(b[0] == 5);
+    assert(b[1] == 4);
+    assert(b[2] == 3);
+    assert(b[3] == 2);
+    assert(b[4] == 1);
+  }
+  {
+    // Test truncation to 32 bits
+    unsigned long long a[4] = {
+      0x1234000056780000uLL,
+      0x0000001234567800uLL,
+      0xFFFFFFFFFFFFFFFFuLL,
+      0x0000000180000000uLL,
+    };
+    std::seed_seq s(a, a+4);
+    assert(s.size() == 4);
+
+    unsigned b[4] = {0};
+    s.param(b);
+    assert(b[0] == 0x56780000u);
+    assert(b[1] == 0x34567800u);
+    assert(b[2] == 0xFFFFFFFFu);
+    assert(b[3] == 0x80000000u);
+  }
+#if TEST_STD_VER >= 11
+  {
+    // Test uniform initialization syntax (LWG 3422)
+    unsigned a[3] = {1, 2, 3};
+    std::seed_seq s{a, a+3};  // uniform initialization
+    assert(s.size() == 3);
+
+    unsigned b[3] = {0};
+    s.param(b);
+    assert(b[0] == 1);
+    assert(b[1] == 2);
+    assert(b[2] == 3);
+  }
+#endif // TEST_STD_VER >= 11
+}
+
+int main(int, char**)
+{
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/iterator.verify.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/iterator.verify.cpp
new file mode 100644
index 0000000..d5c5784
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/iterator.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq;
+
+// template<class InputIterator>
+//   seed_seq(InputIterator begin, InputIterator end);
+// Mandates: iterator_traits<InputIterator>::value_type is an integer type.
+
+#include <random>
+
+void test()
+{
+  {
+    bool a[2] = {true, false};
+    std::seed_seq s(a, a+2); // OK
+  }
+  {
+    double a[2] = {1, 2};
+    std::seed_seq s(a, a+2); // expected-error@*:* {{Mandates: iterator_traits<InputIterator>::value_type is an integer type}}
+        // expected-error@*:* {{invalid operands to binary expression ('double' and 'unsigned int')}}
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/types.pass.cpp
new file mode 100644
index 0000000..82a1251
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/numerics/rand/rand.util/rand.util.seedseq/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <random>
+
+// class seed_seq
+// {
+// public:
+//     // types
+//     typedef uint_least32_t result_type;
+
+#include <random>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::seed_seq::result_type, std::uint_least32_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/pstl b/app/src/main/cpp/libcxx/test/std/pstl
new file mode 100644
index 0000000..27a2822
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/pstl
@@ -0,0 +1 @@
+../../../pstl/test/std
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.pass.cpp
new file mode 100644
index 0000000..ca25fc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.pass.cpp
@@ -0,0 +1,341 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::begin
+// std::ranges::cbegin
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeBeginT = decltype(std::ranges::begin);
+using RangeCBeginT = decltype(std::ranges::cbegin);
+
+static int globalBuff[8];
+
+static_assert(!std::is_invocable_v<RangeBeginT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeBeginT, int (&)[10]>);
+static_assert(!std::is_invocable_v<RangeBeginT, int (&&)[]>);
+static_assert( std::is_invocable_v<RangeBeginT, int (&)[]>);
+static_assert(!std::is_invocable_v<RangeCBeginT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeCBeginT, int (&)[10]>);
+static_assert(!std::is_invocable_v<RangeCBeginT, int (&&)[]>);
+static_assert( std::is_invocable_v<RangeCBeginT, int (&)[]>);
+
+struct Incomplete;
+static_assert(!std::is_invocable_v<RangeBeginT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeBeginT, const Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeCBeginT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeCBeginT, const Incomplete(&&)[]>);
+
+static_assert(!std::is_invocable_v<RangeBeginT, Incomplete(&&)[10]>);
+static_assert(!std::is_invocable_v<RangeBeginT, const Incomplete(&&)[10]>);
+static_assert(!std::is_invocable_v<RangeCBeginT, Incomplete(&&)[10]>);
+static_assert(!std::is_invocable_v<RangeCBeginT, const Incomplete(&&)[10]>);
+
+// This case is IFNDR; we handle it SFINAE-friendly.
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeBeginT, Incomplete(&)[]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeBeginT, const Incomplete(&)[]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCBeginT, Incomplete(&)[]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCBeginT, const Incomplete(&)[]>);
+
+// This case is IFNDR; we handle it SFINAE-friendly.
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeBeginT, Incomplete(&)[10]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeBeginT, const Incomplete(&)[10]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCBeginT, Incomplete(&)[10]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCBeginT, const Incomplete(&)[10]>);
+
+struct BeginMember {
+  int x;
+  constexpr const int *begin() const { return &x; }
+};
+
+// Ensure that we can't call with rvalues with borrowing disabled.
+static_assert( std::is_invocable_v<RangeBeginT, BeginMember &>);
+static_assert(!std::is_invocable_v<RangeBeginT, BeginMember &&>);
+static_assert( std::is_invocable_v<RangeBeginT, BeginMember const&>);
+static_assert(!std::is_invocable_v<RangeBeginT, BeginMember const&&>);
+static_assert( std::is_invocable_v<RangeCBeginT, BeginMember &>);
+static_assert(!std::is_invocable_v<RangeCBeginT, BeginMember &&>);
+static_assert( std::is_invocable_v<RangeCBeginT, BeginMember const&>);
+static_assert(!std::is_invocable_v<RangeCBeginT, BeginMember const&&>);
+
+constexpr bool testReturnTypes() {
+  {
+    int *x[2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::begin(x)), int**);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cbegin(x)), int* const*);
+  }
+  {
+    int x[2][2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::begin(x)), int(*)[2]);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cbegin(x)), const int(*)[2]);
+  }
+  {
+    struct Different {
+      char*& begin();
+      short*& begin() const;
+    } x;
+    ASSERT_SAME_TYPE(decltype(std::ranges::begin(x)), char*);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cbegin(x)), short*);
+  }
+  return true;
+}
+
+constexpr bool testArray() {
+  int a[2];
+  assert(std::ranges::begin(a) == a);
+  assert(std::ranges::cbegin(a) == a);
+
+  int b[2][2];
+  assert(std::ranges::begin(b) == b);
+  assert(std::ranges::cbegin(b) == b);
+
+  BeginMember c[2];
+  assert(std::ranges::begin(c) == c);
+  assert(std::ranges::cbegin(c) == c);
+
+  return true;
+}
+
+struct BeginMemberReturnsInt {
+  int begin() const;
+};
+static_assert(!std::is_invocable_v<RangeBeginT, BeginMemberReturnsInt const&>);
+
+struct BeginMemberReturnsVoidPtr {
+  const void *begin() const;
+};
+static_assert(!std::is_invocable_v<RangeBeginT, BeginMemberReturnsVoidPtr const&>);
+
+struct EmptyBeginMember {
+  struct iterator {};
+  iterator begin() const;
+};
+static_assert(!std::is_invocable_v<RangeBeginT, EmptyBeginMember const&>);
+
+struct PtrConvertibleBeginMember {
+  struct iterator { operator int*() const; };
+  iterator begin() const;
+};
+static_assert(!std::is_invocable_v<RangeBeginT, PtrConvertibleBeginMember const&>);
+
+struct NonConstBeginMember {
+  int x;
+  constexpr int *begin() { return &x; }
+};
+static_assert( std::is_invocable_v<RangeBeginT,  NonConstBeginMember &>);
+static_assert(!std::is_invocable_v<RangeBeginT,  NonConstBeginMember const&>);
+static_assert(!std::is_invocable_v<RangeCBeginT, NonConstBeginMember &>);
+static_assert(!std::is_invocable_v<RangeCBeginT, NonConstBeginMember const&>);
+
+struct EnabledBorrowingBeginMember {
+  constexpr int *begin() const { return &globalBuff[0]; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<EnabledBorrowingBeginMember> = true;
+
+struct BeginMemberFunction {
+  int x;
+  constexpr const int *begin() const { return &x; }
+  friend int *begin(BeginMemberFunction const&);
+};
+
+struct EmptyPtrBeginMember {
+  struct Empty {};
+  Empty x;
+  constexpr const Empty *begin() const { return &x; }
+};
+
+constexpr bool testBeginMember() {
+  BeginMember a;
+  assert(std::ranges::begin(a) == &a.x);
+  assert(std::ranges::cbegin(a) == &a.x);
+  static_assert(!std::is_invocable_v<RangeBeginT, BeginMember&&>);
+  static_assert(!std::is_invocable_v<RangeCBeginT, BeginMember&&>);
+
+  NonConstBeginMember b;
+  assert(std::ranges::begin(b) == &b.x);
+  static_assert(!std::is_invocable_v<RangeCBeginT, NonConstBeginMember&>);
+
+  EnabledBorrowingBeginMember c;
+  assert(std::ranges::begin(c) == &globalBuff[0]);
+  assert(std::ranges::cbegin(c) == &globalBuff[0]);
+  assert(std::ranges::begin(std::move(c)) == &globalBuff[0]);
+  assert(std::ranges::cbegin(std::move(c)) == &globalBuff[0]);
+
+  BeginMemberFunction d;
+  assert(std::ranges::begin(d) == &d.x);
+  assert(std::ranges::cbegin(d) == &d.x);
+
+  EmptyPtrBeginMember e;
+  assert(std::ranges::begin(e) == &e.x);
+  assert(std::ranges::cbegin(e) == &e.x);
+
+  return true;
+}
+
+
+struct BeginFunction {
+  int x;
+  friend constexpr const int *begin(BeginFunction const& bf) { return &bf.x; }
+};
+static_assert( std::is_invocable_v<RangeBeginT,  BeginFunction const&>);
+static_assert(!std::is_invocable_v<RangeBeginT,  BeginFunction &&>);
+static_assert(!std::is_invocable_v<RangeBeginT,  BeginFunction &>);
+static_assert( std::is_invocable_v<RangeCBeginT, BeginFunction const&>);
+static_assert( std::is_invocable_v<RangeCBeginT, BeginFunction &>);
+
+struct BeginFunctionReturnsInt {
+  friend int begin(BeginFunctionReturnsInt const&);
+};
+static_assert(!std::is_invocable_v<RangeBeginT, BeginFunctionReturnsInt const&>);
+
+struct BeginFunctionReturnsVoidPtr {
+  friend void *begin(BeginFunctionReturnsVoidPtr const&);
+};
+static_assert(!std::is_invocable_v<RangeBeginT, BeginFunctionReturnsVoidPtr const&>);
+
+struct BeginFunctionReturnsPtrConvertible {
+  struct iterator { operator int*() const; };
+  friend iterator begin(BeginFunctionReturnsPtrConvertible const&);
+};
+static_assert(!std::is_invocable_v<RangeBeginT, BeginFunctionReturnsPtrConvertible const&>);
+
+struct BeginFunctionByValue {
+  friend constexpr int *begin(BeginFunctionByValue) { return &globalBuff[1]; }
+};
+static_assert(!std::is_invocable_v<RangeCBeginT, BeginFunctionByValue>);
+
+struct BeginFunctionEnabledBorrowing {
+  friend constexpr int *begin(BeginFunctionEnabledBorrowing) { return &globalBuff[2]; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BeginFunctionEnabledBorrowing> = true;
+
+struct BeginFunctionReturnsEmptyPtr {
+  struct Empty {};
+  Empty x;
+  friend constexpr const Empty *begin(BeginFunctionReturnsEmptyPtr const& bf) { return &bf.x; }
+};
+
+struct BeginFunctionWithDataMember {
+  int x;
+  int begin;
+  friend constexpr const int *begin(BeginFunctionWithDataMember const& bf) { return &bf.x; }
+};
+
+struct BeginFunctionWithPrivateBeginMember {
+  int y;
+  friend constexpr const int *begin(BeginFunctionWithPrivateBeginMember const& bf) { return &bf.y; }
+private:
+  const int *begin() const;
+};
+
+constexpr bool testBeginFunction() {
+  BeginFunction a{};
+  const BeginFunction aa{};
+  static_assert(!std::invocable<RangeBeginT, decltype((a))>);
+  assert(std::ranges::cbegin(a) == &a.x);
+  assert(std::ranges::begin(aa) == &aa.x);
+  assert(std::ranges::cbegin(aa) == &aa.x);
+
+  BeginFunctionByValue b{};
+  const BeginFunctionByValue bb{};
+  assert(std::ranges::begin(b) == &globalBuff[1]);
+  assert(std::ranges::cbegin(b) == &globalBuff[1]);
+  assert(std::ranges::begin(bb) == &globalBuff[1]);
+  assert(std::ranges::cbegin(bb) == &globalBuff[1]);
+
+  BeginFunctionEnabledBorrowing c{};
+  const BeginFunctionEnabledBorrowing cc{};
+  assert(std::ranges::begin(std::move(c)) == &globalBuff[2]);
+  assert(std::ranges::cbegin(std::move(c)) == &globalBuff[2]);
+  assert(std::ranges::begin(std::move(cc)) == &globalBuff[2]);
+  assert(std::ranges::cbegin(std::move(cc)) == &globalBuff[2]);
+
+  BeginFunctionReturnsEmptyPtr d{};
+  const BeginFunctionReturnsEmptyPtr dd{};
+  static_assert(!std::invocable<RangeBeginT, decltype((d))>);
+  assert(std::ranges::cbegin(d) == &d.x);
+  assert(std::ranges::begin(dd) == &dd.x);
+  assert(std::ranges::cbegin(dd) == &dd.x);
+
+  BeginFunctionWithDataMember e{};
+  const BeginFunctionWithDataMember ee{};
+  static_assert(!std::invocable<RangeBeginT, decltype((e))>);
+  assert(std::ranges::begin(ee) == &ee.x);
+  assert(std::ranges::cbegin(e) == &e.x);
+  assert(std::ranges::cbegin(ee) == &ee.x);
+
+  BeginFunctionWithPrivateBeginMember f{};
+  const BeginFunctionWithPrivateBeginMember ff{};
+  static_assert(!std::invocable<RangeBeginT, decltype((f))>);
+  assert(std::ranges::cbegin(f) == &f.y);
+  assert(std::ranges::begin(ff) == &ff.y);
+  assert(std::ranges::cbegin(ff) == &ff.y);
+
+  return true;
+}
+
+
+ASSERT_NOEXCEPT(std::ranges::begin(std::declval<int (&)[10]>()));
+ASSERT_NOEXCEPT(std::ranges::cbegin(std::declval<int (&)[10]>()));
+
+struct NoThrowMemberBegin {
+  ThrowingIterator<int> begin() const noexcept; // auto(t.begin()) doesn't throw
+} ntmb;
+static_assert(noexcept(std::ranges::begin(ntmb)));
+static_assert(noexcept(std::ranges::cbegin(ntmb)));
+
+struct NoThrowADLBegin {
+  friend ThrowingIterator<int> begin(NoThrowADLBegin&) noexcept;  // auto(begin(t)) doesn't throw
+  friend ThrowingIterator<int> begin(const NoThrowADLBegin&) noexcept;
+} ntab;
+static_assert(noexcept(std::ranges::begin(ntab)));
+static_assert(noexcept(std::ranges::cbegin(ntab)));
+
+struct NoThrowMemberBeginReturnsRef {
+  ThrowingIterator<int>& begin() const noexcept; // auto(t.begin()) may throw
+} ntmbrr;
+static_assert(!noexcept(std::ranges::begin(ntmbrr)));
+static_assert(!noexcept(std::ranges::cbegin(ntmbrr)));
+
+struct BeginReturnsArrayRef {
+    auto begin() const noexcept -> int(&)[10];
+} brar;
+static_assert(noexcept(std::ranges::begin(brar)));
+static_assert(noexcept(std::ranges::cbegin(brar)));
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeBeginT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeBeginT, Holder<Incomplete>*&>);
+static_assert(!std::is_invocable_v<RangeCBeginT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeCBeginT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  static_assert(testReturnTypes());
+
+  testArray();
+  static_assert(testArray());
+
+  testBeginMember();
+  static_assert(testBeginMember());
+
+  testBeginFunction();
+  static_assert(testBeginFunction());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.sizezero.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.sizezero.pass.cpp
new file mode 100644
index 0000000..6e71d88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.sizezero.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: msvc
+
+// std::ranges::begin
+// std::ranges::cbegin
+//   Test the fix for https://llvm.org/PR54100
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {
+  int m[0];
+};
+static_assert(sizeof(A) == 0); // an extension supported by GCC and Clang
+
+int main(int, char**)
+{
+  A a[10];
+  std::same_as<A*> auto p = std::ranges::begin(a);
+  assert(p == a);
+  std::same_as<const A*> auto cp = std::ranges::cbegin(a);
+  assert(cp == a);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.verify.cpp
new file mode 100644
index 0000000..433404b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/begin.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::begin
+
+#include <ranges>
+
+struct NonBorrowedRange {
+  int* begin() const;
+  int* end() const;
+};
+static_assert(!std::ranges::enable_borrowed_range<NonBorrowedRange>);
+
+// Verify that if the expression is an rvalue and `enable_borrowed_range` is false, `ranges::begin` is ill-formed.
+void test() {
+  std::ranges::begin(NonBorrowedRange());
+  // expected-error-re@-1 {{{{call to deleted function call operator in type 'const (std::ranges::)?__begin::__fn'}}}}
+  // expected-error@-2  {{attempt to use a deleted function}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/data.pass.cpp
new file mode 100644
index 0000000..357e52a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/data.pass.cpp
@@ -0,0 +1,291 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::data
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeDataT = decltype(std::ranges::data);
+using RangeCDataT = decltype(std::ranges::cdata);
+
+static int globalBuff[2];
+
+struct Incomplete;
+
+static_assert(!std::is_invocable_v<RangeDataT, Incomplete[]>);
+static_assert(!std::is_invocable_v<RangeDataT, Incomplete(&&)[2]>);
+static_assert(!std::is_invocable_v<RangeDataT, Incomplete(&&)[2][2]>);
+static_assert(!std::is_invocable_v<RangeDataT, int [1]>);
+static_assert(!std::is_invocable_v<RangeDataT, int (&&)[1]>);
+static_assert( std::is_invocable_v<RangeDataT, int (&)[1]>);
+
+static_assert(!std::is_invocable_v<RangeCDataT, Incomplete[]>);
+static_assert(!std::is_invocable_v<RangeCDataT, Incomplete(&&)[2]>);
+static_assert(!std::is_invocable_v<RangeCDataT, Incomplete(&&)[2][2]>);
+static_assert(!std::is_invocable_v<RangeCDataT, int [1]>);
+static_assert(!std::is_invocable_v<RangeCDataT, int (&&)[1]>);
+static_assert( std::is_invocable_v<RangeCDataT, int (&)[1]>);
+
+struct DataMember {
+  int x;
+  constexpr const int *data() const { return &x; }
+};
+static_assert( std::is_invocable_v<RangeDataT, DataMember &>);
+static_assert(!std::is_invocable_v<RangeDataT, DataMember &&>);
+static_assert( std::is_invocable_v<RangeDataT, DataMember const&>);
+static_assert(!std::is_invocable_v<RangeDataT, DataMember const&&>);
+static_assert( std::is_invocable_v<RangeCDataT, DataMember &>);
+static_assert(!std::is_invocable_v<RangeCDataT, DataMember &&>);
+static_assert( std::is_invocable_v<RangeCDataT, DataMember const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, DataMember const&&>);
+
+constexpr bool testReturnTypes() {
+  {
+    int *x[2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::data(x)), int**);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cdata(x)), int* const*);
+  }
+  {
+    int x[2][2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::data(x)), int(*)[2]);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cdata(x)), const int(*)[2]);
+  }
+  {
+    struct D {
+      char*& data();
+      short*& data() const;
+    };
+    ASSERT_SAME_TYPE(decltype(std::ranges::data(std::declval<D&>())), char*);
+    static_assert(!std::is_invocable_v<RangeDataT, D&&>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::data(std::declval<const D&>())), short*);
+    static_assert(!std::is_invocable_v<RangeDataT, const D&&>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cdata(std::declval<D&>())), short*);
+    static_assert(!std::is_invocable_v<RangeCDataT, D&&>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cdata(std::declval<const D&>())), short*);
+    static_assert(!std::is_invocable_v<RangeCDataT, const D&&>);
+  }
+  {
+    struct NC {
+      char *begin() const;
+      char *end() const;
+      int *data();
+    };
+    static_assert(!std::ranges::contiguous_range<NC>);
+    static_assert( std::ranges::contiguous_range<const NC>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::data(std::declval<NC&>())), int*);
+    static_assert(!std::is_invocable_v<RangeDataT, NC&&>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::data(std::declval<const NC&>())), char*);
+    static_assert(!std::is_invocable_v<RangeDataT, const NC&&>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cdata(std::declval<NC&>())), char*);
+    static_assert(!std::is_invocable_v<RangeCDataT, NC&&>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cdata(std::declval<const NC&>())), char*);
+    static_assert(!std::is_invocable_v<RangeCDataT, const NC&&>);
+  }
+  return true;
+}
+
+struct VoidDataMember {
+  void *data() const;
+};
+static_assert(!std::is_invocable_v<RangeDataT, VoidDataMember const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, VoidDataMember const&>);
+
+struct Empty { };
+struct EmptyDataMember {
+  Empty data() const;
+};
+static_assert(!std::is_invocable_v<RangeDataT, EmptyDataMember const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, EmptyDataMember const&>);
+
+struct PtrConvertibleDataMember {
+  struct Ptr {
+    operator int*() const;
+  };
+  Ptr data() const;
+};
+static_assert(!std::is_invocable_v<RangeDataT, PtrConvertibleDataMember const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, PtrConvertibleDataMember const&>);
+
+struct NonConstDataMember {
+  int x;
+  constexpr int *data() { return &x; }
+};
+
+struct EnabledBorrowingDataMember {
+  constexpr int *data() { return &globalBuff[0]; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<EnabledBorrowingDataMember> = true;
+
+struct DataMemberAndBegin {
+  int x;
+  constexpr const int *data() const { return &x; }
+  const int *begin() const;
+};
+
+constexpr bool testDataMember() {
+  DataMember a;
+  assert(std::ranges::data(a) == &a.x);
+  assert(std::ranges::cdata(a) == &a.x);
+
+  NonConstDataMember b;
+  assert(std::ranges::data(b) == &b.x);
+  static_assert(!std::is_invocable_v<RangeCDataT, decltype((b))>);
+
+  EnabledBorrowingDataMember c;
+  assert(std::ranges::data(std::move(c)) == &globalBuff[0]);
+  static_assert(!std::is_invocable_v<RangeCDataT, decltype(std::move(c))>);
+
+  DataMemberAndBegin d;
+  assert(std::ranges::data(d) == &d.x);
+  assert(std::ranges::cdata(d) == &d.x);
+
+  return true;
+}
+
+using ContiguousIter = contiguous_iterator<const int*>;
+
+struct BeginMemberContiguousIterator {
+  int buff[8];
+
+  constexpr ContiguousIter begin() const { return ContiguousIter(buff); }
+};
+static_assert( std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator &>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator &&>);
+static_assert( std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator const&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator const&&>);
+static_assert( std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator &>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator &&>);
+static_assert( std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator const&&>);
+
+struct BeginMemberRandomAccess {
+  int buff[8];
+
+  random_access_iterator<const int*> begin() const;
+};
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberRandomAccess&&>);
+static_assert(!std::is_invocable_v<RangeDataT, const BeginMemberRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeDataT, const BeginMemberRandomAccess&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberRandomAccess&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, const BeginMemberRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeCDataT, const BeginMemberRandomAccess&&>);
+
+struct BeginFriendContiguousIterator {
+  int buff[8];
+
+  friend constexpr ContiguousIter begin(const BeginFriendContiguousIterator &iter) {
+    return ContiguousIter(iter.buff);
+  }
+};
+static_assert( std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator &>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator &&>);
+static_assert( std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator const&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberContiguousIterator const&&>);
+static_assert( std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator &>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator &&>);
+static_assert( std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberContiguousIterator const&&>);
+
+struct BeginFriendRandomAccess {
+  friend random_access_iterator<const int*> begin(const BeginFriendRandomAccess iter);
+};
+static_assert(!std::is_invocable_v<RangeDataT, BeginFriendRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginFriendRandomAccess&&>);
+static_assert(!std::is_invocable_v<RangeDataT, const BeginFriendRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeDataT, const BeginFriendRandomAccess&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginFriendRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginFriendRandomAccess&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, const BeginFriendRandomAccess&>);
+static_assert(!std::is_invocable_v<RangeCDataT, const BeginFriendRandomAccess&&>);
+
+struct BeginMemberRvalue {
+  int buff[8];
+
+  ContiguousIter begin() &&;
+};
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberRvalue&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberRvalue&&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberRvalue const&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberRvalue const&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberRvalue&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberRvalue&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberRvalue const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberRvalue const&&>);
+
+struct BeginMemberBorrowingEnabled {
+  constexpr contiguous_iterator<int*> begin() { return contiguous_iterator<int*>{&globalBuff[1]}; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BeginMemberBorrowingEnabled> = true;
+static_assert( std::is_invocable_v<RangeDataT, BeginMemberBorrowingEnabled &>);
+static_assert( std::is_invocable_v<RangeDataT, BeginMemberBorrowingEnabled &&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberBorrowingEnabled const&>);
+static_assert(!std::is_invocable_v<RangeDataT, BeginMemberBorrowingEnabled const&&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberBorrowingEnabled &>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberBorrowingEnabled &&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberBorrowingEnabled const&>);
+static_assert(!std::is_invocable_v<RangeCDataT, BeginMemberBorrowingEnabled const&&>);
+
+constexpr bool testViaRangesBegin() {
+  int arr[2];
+  assert(std::ranges::data(arr) == arr + 0);
+  assert(std::ranges::cdata(arr) == arr + 0);
+
+  BeginMemberContiguousIterator a;
+  assert(std::ranges::data(a) == a.buff);
+  assert(std::ranges::cdata(a) == a.buff);
+
+  const BeginFriendContiguousIterator b {};
+  assert(std::ranges::data(b) == b.buff);
+  assert(std::ranges::cdata(b) == b.buff);
+
+  BeginMemberBorrowingEnabled c;
+  assert(std::ranges::data(std::move(c)) == &globalBuff[1]);
+  static_assert(!std::is_invocable_v<RangeCDataT, decltype(std::move(c))>);
+
+  return true;
+}
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeDataT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeDataT, Holder<Incomplete>*&>);
+static_assert(!std::is_invocable_v<RangeCDataT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeCDataT, Holder<Incomplete>*&>);
+
+struct RandomButNotContiguous {
+  random_access_iterator<int*> begin() const;
+  random_access_iterator<int*> end() const;
+};
+static_assert(!std::is_invocable_v<RangeDataT, RandomButNotContiguous>);
+static_assert(!std::is_invocable_v<RangeDataT, RandomButNotContiguous&>);
+static_assert(!std::is_invocable_v<RangeCDataT, RandomButNotContiguous>);
+static_assert(!std::is_invocable_v<RangeCDataT, RandomButNotContiguous&>);
+
+int main(int, char**) {
+  static_assert(testReturnTypes());
+
+  testDataMember();
+  static_assert(testDataMember());
+
+  testViaRangesBegin();
+  static_assert(testViaRangesBegin());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/data.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/data.verify.cpp
new file mode 100644
index 0000000..e5b6ec7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/data.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::data
+
+#include <ranges>
+
+struct NonBorrowedRange {
+  int* begin() const;
+  int* end() const;
+};
+static_assert(!std::ranges::enable_borrowed_range<NonBorrowedRange>);
+
+// Verify that if the expression is an rvalue and `enable_borrowed_range` is false, `ranges::data` is ill-formed.
+void test() {
+  std::ranges::data(NonBorrowedRange());
+  // expected-error-re@-1 {{{{no matching function for call to object of type 'const (std::ranges::)?__data::__fn'}}}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/empty.pass.cpp
new file mode 100644
index 0000000..4ff1f3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/empty.pass.cpp
@@ -0,0 +1,186 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::empty
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeEmptyT = decltype(std::ranges::empty);
+
+static_assert(!std::is_invocable_v<RangeEmptyT, int[]>);
+static_assert(!std::is_invocable_v<RangeEmptyT, int(&)[]>);
+static_assert(!std::is_invocable_v<RangeEmptyT, int(&&)[]>);
+static_assert( std::is_invocable_v<RangeEmptyT, int[1]>);
+static_assert( std::is_invocable_v<RangeEmptyT, const int[1]>);
+static_assert( std::is_invocable_v<RangeEmptyT, int (&&)[1]>);
+static_assert( std::is_invocable_v<RangeEmptyT, int (&)[1]>);
+static_assert( std::is_invocable_v<RangeEmptyT, const int (&)[1]>);
+
+struct Incomplete;
+static_assert(!std::is_invocable_v<RangeEmptyT, Incomplete[]>);
+static_assert(!std::is_invocable_v<RangeEmptyT, Incomplete(&)[]>);
+static_assert(!std::is_invocable_v<RangeEmptyT, Incomplete(&&)[]>);
+
+extern Incomplete array_of_incomplete[42];
+static_assert(!std::ranges::empty(array_of_incomplete));
+static_assert(!std::ranges::empty(std::move(array_of_incomplete)));
+static_assert(!std::ranges::empty(std::as_const(array_of_incomplete)));
+static_assert(!std::ranges::empty(static_cast<const Incomplete(&&)[42]>(array_of_incomplete)));
+
+struct InputRangeWithoutSize {
+    cpp17_input_iterator<int*> begin() const;
+    cpp17_input_iterator<int*> end() const;
+};
+static_assert(!std::is_invocable_v<RangeEmptyT, const InputRangeWithoutSize&>);
+
+struct NonConstEmpty {
+  bool empty();
+};
+static_assert(!std::is_invocable_v<RangeEmptyT, const NonConstEmpty&>);
+
+struct HasMemberAndFunction {
+  constexpr bool empty() const { return true; }
+  // We should never do ADL lookup for std::ranges::empty.
+  friend bool empty(const HasMemberAndFunction&) { return false; }
+};
+
+struct BadReturnType {
+  BadReturnType empty() { return {}; }
+};
+static_assert(!std::is_invocable_v<RangeEmptyT, BadReturnType&>);
+
+struct BoolConvertible {
+  constexpr explicit operator bool() noexcept(false) { return true; }
+};
+struct BoolConvertibleReturnType {
+  constexpr BoolConvertible empty() noexcept { return {}; }
+};
+static_assert(!noexcept(std::ranges::empty(BoolConvertibleReturnType())));
+
+struct InputIterators {
+  cpp17_input_iterator<int*> begin() const;
+  cpp17_input_iterator<int*> end() const;
+};
+static_assert(std::is_same_v<decltype(InputIterators().begin() == InputIterators().end()), bool>);
+static_assert(!std::is_invocable_v<RangeEmptyT, const InputIterators&>);
+
+constexpr bool testEmptyMember() {
+  HasMemberAndFunction a;
+  assert(std::ranges::empty(a));
+
+  BoolConvertibleReturnType b;
+  assert(std::ranges::empty(b));
+
+  return true;
+}
+
+struct SizeMember {
+  size_t size_;
+  constexpr size_t size() const { return size_; }
+};
+
+struct SizeFunction {
+  size_t size_;
+  friend constexpr size_t size(SizeFunction sf) { return sf.size_; }
+};
+
+struct BeginEndSizedSentinel {
+  constexpr int *begin() const { return nullptr; }
+  constexpr auto end() const { return sized_sentinel<int*>(nullptr); }
+};
+static_assert(std::ranges::forward_range<BeginEndSizedSentinel>);
+static_assert(std::ranges::sized_range<BeginEndSizedSentinel>);
+
+constexpr bool testUsingRangesSize() {
+  SizeMember a{1};
+  assert(!std::ranges::empty(a));
+  SizeMember b{0};
+  assert(std::ranges::empty(b));
+
+  SizeFunction c{1};
+  assert(!std::ranges::empty(c));
+  SizeFunction d{0};
+  assert(std::ranges::empty(d));
+
+  BeginEndSizedSentinel e;
+  assert(std::ranges::empty(e));
+
+  return true;
+}
+
+struct BeginEndNotSizedSentinel {
+  constexpr int *begin() const { return nullptr; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(nullptr); }
+};
+static_assert( std::ranges::forward_range<BeginEndNotSizedSentinel>);
+static_assert(!std::ranges::sized_range<BeginEndNotSizedSentinel>);
+
+// size is disabled here, so we have to compare begin and end.
+struct DisabledSizeRangeWithBeginEnd {
+  constexpr int *begin() const { return nullptr; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(nullptr); }
+  size_t size() const;
+};
+template<>
+inline constexpr bool std::ranges::disable_sized_range<DisabledSizeRangeWithBeginEnd> = true;
+static_assert(std::ranges::contiguous_range<DisabledSizeRangeWithBeginEnd>);
+static_assert(!std::ranges::sized_range<DisabledSizeRangeWithBeginEnd>);
+
+struct BeginEndAndEmpty {
+  constexpr int *begin() const { return nullptr; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(nullptr); }
+  constexpr bool empty() { return false; }
+};
+
+struct EvilBeginEnd {
+  bool empty() &&;
+  constexpr int *begin() & { return nullptr; }
+  constexpr int *end() & { return nullptr; }
+};
+
+constexpr bool testBeginEqualsEnd() {
+  BeginEndNotSizedSentinel a;
+  assert(std::ranges::empty(a));
+
+  DisabledSizeRangeWithBeginEnd d;
+  assert(std::ranges::empty(d));
+
+  BeginEndAndEmpty e;
+  assert(!std::ranges::empty(e)); // e.empty()
+  assert(std::ranges::empty(std::as_const(e))); // e.begin() == e.end()
+
+  assert(std::ranges::empty(EvilBeginEnd()));
+
+  return true;
+}
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeEmptyT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeEmptyT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  testEmptyMember();
+  static_assert(testEmptyMember());
+
+  testUsingRangesSize();
+  static_assert(testUsingRangesSize());
+
+  testBeginEqualsEnd();
+  static_assert(testBeginEqualsEnd());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/empty.verify.cpp
new file mode 100644
index 0000000..8762f5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/empty.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::empty
+
+#include <ranges>
+
+extern int arr[];
+
+// Verify that for an array of unknown bound `ranges::empty` is ill-formed.
+void test() {
+  std::ranges::empty(arr);
+  // expected-error-re@-1 {{{{no matching function for call to object of type 'const (std::ranges::)?__empty::__fn'}}}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.pass.cpp
new file mode 100644
index 0000000..21d9735
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.pass.cpp
@@ -0,0 +1,370 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::end
+// std::ranges::cend
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeEndT = decltype(std::ranges::end);
+using RangeCEndT = decltype(std::ranges::cend);
+
+static int globalBuff[8];
+
+static_assert(!std::is_invocable_v<RangeEndT, int (&&)[]>);
+static_assert(!std::is_invocable_v<RangeEndT, int (&)[]>);
+static_assert(!std::is_invocable_v<RangeEndT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeEndT, int (&)[10]>);
+static_assert(!std::is_invocable_v<RangeCEndT, int (&&)[]>);
+static_assert(!std::is_invocable_v<RangeCEndT, int (&)[]>);
+static_assert(!std::is_invocable_v<RangeCEndT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeCEndT, int (&)[10]>);
+
+struct Incomplete;
+static_assert(!std::is_invocable_v<RangeEndT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeEndT, Incomplete(&&)[42]>);
+static_assert(!std::is_invocable_v<RangeCEndT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeCEndT, Incomplete(&&)[42]>);
+
+struct EndMember {
+  int x;
+  const int *begin() const;
+  constexpr const int *end() const { return &x; }
+};
+
+// Ensure that we can't call with rvalues with borrowing disabled.
+static_assert( std::is_invocable_v<RangeEndT, EndMember &>);
+static_assert(!std::is_invocable_v<RangeEndT, EndMember &&>);
+static_assert( std::is_invocable_v<RangeEndT, EndMember const&>);
+static_assert(!std::is_invocable_v<RangeEndT, EndMember const&&>);
+static_assert( std::is_invocable_v<RangeCEndT, EndMember &>);
+static_assert(!std::is_invocable_v<RangeCEndT, EndMember &&>);
+static_assert( std::is_invocable_v<RangeCEndT, EndMember const&>);
+static_assert(!std::is_invocable_v<RangeCEndT, EndMember const&&>);
+
+constexpr bool testReturnTypes() {
+  {
+    int *x[2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::end(x)), int**);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cend(x)), int* const*);
+  }
+  {
+    int x[2][2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::end(x)), int(*)[2]);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cend(x)), const int(*)[2]);
+  }
+  {
+    struct Different {
+      char *begin();
+      sentinel_wrapper<char*>& end();
+      short *begin() const;
+      sentinel_wrapper<short*>& end() const;
+    } x;
+    ASSERT_SAME_TYPE(decltype(std::ranges::end(x)), sentinel_wrapper<char*>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::cend(x)), sentinel_wrapper<short*>);
+  }
+  return true;
+}
+
+constexpr bool testArray() {
+  int a[2];
+  assert(std::ranges::end(a) == a + 2);
+  assert(std::ranges::cend(a) == a + 2);
+
+  int b[2][2];
+  assert(std::ranges::end(b) == b + 2);
+  assert(std::ranges::cend(b) == b + 2);
+
+  EndMember c[2];
+  assert(std::ranges::end(c) == c + 2);
+  assert(std::ranges::cend(c) == c + 2);
+
+  return true;
+}
+
+struct EndMemberReturnsInt {
+  int begin() const;
+  int end() const;
+};
+static_assert(!std::is_invocable_v<RangeEndT, EndMemberReturnsInt const&>);
+
+struct EndMemberReturnsVoidPtr {
+  const void *begin() const;
+  const void *end() const;
+};
+static_assert(!std::is_invocable_v<RangeEndT, EndMemberReturnsVoidPtr const&>);
+
+struct PtrConvertible {
+  operator int*() const;
+};
+struct PtrConvertibleEndMember {
+  PtrConvertible begin() const;
+  PtrConvertible end() const;
+};
+static_assert(!std::is_invocable_v<RangeEndT, PtrConvertibleEndMember const&>);
+
+struct NoBeginMember {
+  constexpr const int *end();
+};
+static_assert(!std::is_invocable_v<RangeEndT, NoBeginMember const&>);
+
+struct NonConstEndMember {
+  int x;
+  constexpr int *begin() { return nullptr; }
+  constexpr int *end() { return &x; }
+};
+static_assert( std::is_invocable_v<RangeEndT,  NonConstEndMember &>);
+static_assert(!std::is_invocable_v<RangeEndT,  NonConstEndMember const&>);
+static_assert(!std::is_invocable_v<RangeCEndT, NonConstEndMember &>);
+static_assert(!std::is_invocable_v<RangeCEndT, NonConstEndMember const&>);
+
+struct EnabledBorrowingEndMember {
+  constexpr int *begin() const { return nullptr; }
+  constexpr int *end() const { return &globalBuff[0]; }
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<EnabledBorrowingEndMember> = true;
+
+struct EndMemberFunction {
+  int x;
+  constexpr const int *begin() const { return nullptr; }
+  constexpr const int *end() const { return &x; }
+  friend constexpr int *end(EndMemberFunction const&);
+};
+
+struct Empty { };
+struct EmptyEndMember {
+  Empty begin() const;
+  Empty end() const;
+};
+static_assert(!std::is_invocable_v<RangeEndT, EmptyEndMember const&>);
+
+struct EmptyPtrEndMember {
+  Empty x;
+  constexpr const Empty *begin() const { return nullptr; }
+  constexpr const Empty *end() const { return &x; }
+};
+
+constexpr bool testEndMember() {
+  EndMember a;
+  assert(std::ranges::end(a) == &a.x);
+  assert(std::ranges::cend(a) == &a.x);
+
+  NonConstEndMember b;
+  assert(std::ranges::end(b) == &b.x);
+  static_assert(!std::is_invocable_v<RangeCEndT, decltype((b))>);
+
+  EnabledBorrowingEndMember c;
+  assert(std::ranges::end(std::move(c)) == &globalBuff[0]);
+  assert(std::ranges::cend(std::move(c)) == &globalBuff[0]);
+
+  EndMemberFunction d;
+  assert(std::ranges::end(d) == &d.x);
+  assert(std::ranges::cend(d) == &d.x);
+
+  EmptyPtrEndMember e;
+  assert(std::ranges::end(e) == &e.x);
+  assert(std::ranges::cend(e) == &e.x);
+
+  return true;
+}
+
+struct EndFunction {
+  int x;
+  friend constexpr const int *begin(EndFunction const&) { return nullptr; }
+  friend constexpr const int *end(EndFunction const& bf) { return &bf.x; }
+};
+
+static_assert( std::is_invocable_v<RangeEndT, EndFunction const&>);
+static_assert(!std::is_invocable_v<RangeEndT, EndFunction &&>);
+
+static_assert( std::is_invocable_v<RangeEndT,  EndFunction const&>);
+static_assert(!std::is_invocable_v<RangeEndT,  EndFunction &&>);
+static_assert(!std::is_invocable_v<RangeEndT,  EndFunction &>);
+static_assert( std::is_invocable_v<RangeCEndT, EndFunction const&>);
+static_assert( std::is_invocable_v<RangeCEndT, EndFunction &>);
+
+struct EndFunctionReturnsInt {
+  friend constexpr int begin(EndFunctionReturnsInt const&);
+  friend constexpr int end(EndFunctionReturnsInt const&);
+};
+static_assert(!std::is_invocable_v<RangeEndT, EndFunctionReturnsInt const&>);
+
+struct EndFunctionReturnsVoidPtr {
+  friend constexpr void *begin(EndFunctionReturnsVoidPtr const&);
+  friend constexpr void *end(EndFunctionReturnsVoidPtr const&);
+};
+static_assert(!std::is_invocable_v<RangeEndT, EndFunctionReturnsVoidPtr const&>);
+
+struct EndFunctionReturnsEmpty {
+  friend constexpr Empty begin(EndFunctionReturnsEmpty const&);
+  friend constexpr Empty end(EndFunctionReturnsEmpty const&);
+};
+static_assert(!std::is_invocable_v<RangeEndT, EndFunctionReturnsEmpty const&>);
+
+struct EndFunctionReturnsPtrConvertible {
+  friend constexpr PtrConvertible begin(EndFunctionReturnsPtrConvertible const&);
+  friend constexpr PtrConvertible end(EndFunctionReturnsPtrConvertible const&);
+};
+static_assert(!std::is_invocable_v<RangeEndT, EndFunctionReturnsPtrConvertible const&>);
+
+struct NoBeginFunction {
+  friend constexpr const int *end(NoBeginFunction const&);
+};
+static_assert(!std::is_invocable_v<RangeEndT, NoBeginFunction const&>);
+
+struct EndFunctionByValue {
+  friend constexpr int *begin(EndFunctionByValue) { return nullptr; }
+  friend constexpr int *end(EndFunctionByValue) { return &globalBuff[1]; }
+};
+static_assert(!std::is_invocable_v<RangeCEndT, EndFunctionByValue>);
+
+struct EndFunctionEnabledBorrowing {
+  friend constexpr int *begin(EndFunctionEnabledBorrowing) { return nullptr; }
+  friend constexpr int *end(EndFunctionEnabledBorrowing) { return &globalBuff[2]; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<EndFunctionEnabledBorrowing> = true;
+
+struct EndFunctionReturnsEmptyPtr {
+  Empty x;
+  friend constexpr const Empty *begin(EndFunctionReturnsEmptyPtr const&) { return nullptr; }
+  friend constexpr const Empty *end(EndFunctionReturnsEmptyPtr const& bf) { return &bf.x; }
+};
+
+struct EndFunctionWithDataMember {
+  int x;
+  int end;
+  friend constexpr const int *begin(EndFunctionWithDataMember const&) { return nullptr; }
+  friend constexpr const int *end(EndFunctionWithDataMember const& bf) { return &bf.x; }
+};
+
+struct EndFunctionWithPrivateEndMember {
+  int y;
+  friend constexpr const int *begin(EndFunctionWithPrivateEndMember const&) { return nullptr; }
+  friend constexpr const int *end(EndFunctionWithPrivateEndMember const& bf) { return &bf.y; }
+private:
+  const int *end() const;
+};
+
+struct BeginMemberEndFunction {
+  int x;
+  constexpr const int *begin() const { return nullptr; }
+  friend constexpr const int *end(BeginMemberEndFunction const& bf) { return &bf.x; }
+};
+
+constexpr bool testEndFunction() {
+  const EndFunction a{};
+  assert(std::ranges::end(a) == &a.x);
+  assert(std::ranges::cend(a) == &a.x);
+  EndFunction aa{};
+  static_assert(!std::is_invocable_v<RangeEndT, decltype((aa))>);
+  assert(std::ranges::cend(aa) == &aa.x);
+
+  EndFunctionByValue b;
+  assert(std::ranges::end(b) == &globalBuff[1]);
+  assert(std::ranges::cend(b) == &globalBuff[1]);
+
+  EndFunctionEnabledBorrowing c;
+  assert(std::ranges::end(std::move(c)) == &globalBuff[2]);
+  assert(std::ranges::cend(std::move(c)) == &globalBuff[2]);
+
+  const EndFunctionReturnsEmptyPtr d{};
+  assert(std::ranges::end(d) == &d.x);
+  assert(std::ranges::cend(d) == &d.x);
+  EndFunctionReturnsEmptyPtr dd{};
+  static_assert(!std::is_invocable_v<RangeEndT, decltype((dd))>);
+  assert(std::ranges::cend(dd) == &dd.x);
+
+  const EndFunctionWithDataMember e{};
+  assert(std::ranges::end(e) == &e.x);
+  assert(std::ranges::cend(e) == &e.x);
+  EndFunctionWithDataMember ee{};
+  static_assert(!std::is_invocable_v<RangeEndT, decltype((ee))>);
+  assert(std::ranges::cend(ee) == &ee.x);
+
+  const EndFunctionWithPrivateEndMember f{};
+  assert(std::ranges::end(f) == &f.y);
+  assert(std::ranges::cend(f) == &f.y);
+  EndFunctionWithPrivateEndMember ff{};
+  static_assert(!std::is_invocable_v<RangeEndT, decltype((ff))>);
+  assert(std::ranges::cend(ff) == &ff.y);
+
+  const BeginMemberEndFunction g{};
+  assert(std::ranges::end(g) == &g.x);
+  assert(std::ranges::cend(g) == &g.x);
+  BeginMemberEndFunction gg{};
+  static_assert(!std::is_invocable_v<RangeEndT, decltype((gg))>);
+  assert(std::ranges::cend(gg) == &gg.x);
+
+  return true;
+}
+
+
+ASSERT_NOEXCEPT(std::ranges::end(std::declval<int (&)[10]>()));
+ASSERT_NOEXCEPT(std::ranges::cend(std::declval<int (&)[10]>()));
+
+struct NoThrowMemberEnd {
+  ThrowingIterator<int> begin() const;
+  ThrowingIterator<int> end() const noexcept; // auto(t.end()) doesn't throw
+} ntme;
+static_assert(noexcept(std::ranges::end(ntme)));
+static_assert(noexcept(std::ranges::cend(ntme)));
+
+struct NoThrowADLEnd {
+  ThrowingIterator<int> begin() const;
+  friend ThrowingIterator<int> end(NoThrowADLEnd&) noexcept;  // auto(end(t)) doesn't throw
+  friend ThrowingIterator<int> end(const NoThrowADLEnd&) noexcept;
+} ntae;
+static_assert(noexcept(std::ranges::end(ntae)));
+static_assert(noexcept(std::ranges::cend(ntae)));
+
+struct NoThrowMemberEndReturnsRef {
+  ThrowingIterator<int> begin() const;
+  ThrowingIterator<int>& end() const noexcept; // auto(t.end()) may throw
+} ntmerr;
+static_assert(!noexcept(std::ranges::end(ntmerr)));
+static_assert(!noexcept(std::ranges::cend(ntmerr)));
+
+struct EndReturnsArrayRef {
+    auto begin() const noexcept -> int(&)[10];
+    auto end() const noexcept -> int(&)[10];
+} erar;
+static_assert(noexcept(std::ranges::end(erar)));
+static_assert(noexcept(std::ranges::cend(erar)));
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeEndT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeEndT, Holder<Incomplete>*&>);
+static_assert(!std::is_invocable_v<RangeCEndT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeCEndT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  static_assert(testReturnTypes());
+
+  testArray();
+  static_assert(testArray());
+
+  testEndMember();
+  static_assert(testEndMember());
+
+  testEndFunction();
+  static_assert(testEndFunction());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.sizezero.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.sizezero.pass.cpp
new file mode 100644
index 0000000..304ef2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.sizezero.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: msvc
+
+// std::ranges::end
+// std::ranges::cend
+//   Test the fix for https://llvm.org/PR54100
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {
+  int m[0];
+};
+static_assert(sizeof(A) == 0); // an extension supported by GCC and Clang
+
+int main(int, char**)
+{
+  A a[10];
+  std::same_as<A*> auto p = std::ranges::end(a);
+  assert(p == a + 10);
+  std::same_as<const A*> auto cp = std::ranges::cend(a);
+  assert(cp == a + 10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.verify.cpp
new file mode 100644
index 0000000..a4a7f78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/end.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::end
+
+#include <ranges>
+
+struct NonBorrowedRange {
+  int* begin() const;
+  int* end() const;
+};
+static_assert(!std::ranges::enable_borrowed_range<NonBorrowedRange>);
+
+// Verify that if the expression is an rvalue and `enable_borrowed_range` is false, `ranges::end` is ill-formed.
+void test() {
+  std::ranges::end(NonBorrowedRange());
+  // expected-error-re@-1 {{{{call to deleted function call operator in type 'const (std::ranges::)?__end::__fn'}}}}
+  // expected-error@-2  {{attempt to use a deleted function}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/rbegin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rbegin.pass.cpp
new file mode 100644
index 0000000..e1a564c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rbegin.pass.cpp
@@ -0,0 +1,520 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::rbegin
+// std::ranges::crbegin
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeRBeginT = decltype(std::ranges::rbegin);
+using RangeCRBeginT = decltype(std::ranges::crbegin);
+
+static int globalBuff[8];
+
+static_assert(!std::is_invocable_v<RangeRBeginT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeRBeginT, int (&)[10]>);
+static_assert(!std::is_invocable_v<RangeRBeginT, int (&&)[]>);
+static_assert(!std::is_invocable_v<RangeRBeginT, int (&)[]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeCRBeginT, int (&)[10]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, int (&&)[]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, int (&)[]>);
+
+struct Incomplete;
+
+static_assert(!std::is_invocable_v<RangeRBeginT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeRBeginT, const Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, const Incomplete(&&)[]>);
+
+static_assert(!std::is_invocable_v<RangeRBeginT, Incomplete(&&)[10]>);
+static_assert(!std::is_invocable_v<RangeRBeginT, const Incomplete(&&)[10]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, Incomplete(&&)[10]>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, const Incomplete(&&)[10]>);
+
+// This case is IFNDR; we handle it SFINAE-friendly.
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeRBeginT, Incomplete(&)[]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeRBeginT, const Incomplete(&)[]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCRBeginT, Incomplete(&)[]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCRBeginT, const Incomplete(&)[]>);
+
+// This case is IFNDR; we handle it SFINAE-friendly.
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeRBeginT, Incomplete(&)[10]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeRBeginT, const Incomplete(&)[10]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCRBeginT, Incomplete(&)[10]>);
+LIBCPP_STATIC_ASSERT(!std::is_invocable_v<RangeCRBeginT, const Incomplete(&)[10]>);
+
+struct RBeginMember {
+  int x;
+  constexpr const int *rbegin() const { return &x; }
+};
+
+// Ensure that we can't call with rvalues with borrowing disabled.
+static_assert( std::is_invocable_v<RangeRBeginT, RBeginMember &>);
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginMember &&>);
+static_assert( std::is_invocable_v<RangeRBeginT, RBeginMember const&>);
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginMember const&&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, RBeginMember &>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, RBeginMember &&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, RBeginMember const&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, RBeginMember const&&>);
+
+constexpr bool testReturnTypes() {
+  {
+    int *x[2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::rbegin(x)), std::reverse_iterator<int**>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::crbegin(x)), std::reverse_iterator<int* const*>);
+  }
+  {
+    int x[2][2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::rbegin(x)), std::reverse_iterator<int(*)[2]>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::crbegin(x)), std::reverse_iterator<const int(*)[2]>);
+  }
+  {
+    struct Different {
+      char*& rbegin();
+      short*& rbegin() const;
+    } x;
+    ASSERT_SAME_TYPE(decltype(std::ranges::rbegin(x)), char*);
+    ASSERT_SAME_TYPE(decltype(std::ranges::crbegin(x)), short*);
+  }
+  return true;
+}
+
+constexpr bool testArray() {
+  int a[2];
+  assert(std::ranges::rbegin(a).base() == a + 2);
+  assert(std::ranges::crbegin(a).base() == a + 2);
+
+  int b[2][2];
+  assert(std::ranges::rbegin(b).base() == b + 2);
+  assert(std::ranges::crbegin(b).base() == b + 2);
+
+  RBeginMember c[2];
+  assert(std::ranges::rbegin(c).base() == c + 2);
+  assert(std::ranges::crbegin(c).base() == c + 2);
+
+  return true;
+}
+
+struct RBeginMemberReturnsInt {
+  int rbegin() const;
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginMemberReturnsInt const&>);
+
+struct RBeginMemberReturnsVoidPtr {
+  const void *rbegin() const;
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginMemberReturnsVoidPtr const&>);
+
+struct PtrConvertibleRBeginMember {
+  struct iterator { operator int*() const; };
+  iterator rbegin() const;
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, PtrConvertibleRBeginMember const&>);
+
+struct NonConstRBeginMember {
+  int x;
+  constexpr int* rbegin() { return &x; }
+};
+static_assert( std::is_invocable_v<RangeRBeginT,  NonConstRBeginMember &>);
+static_assert(!std::is_invocable_v<RangeRBeginT,  NonConstRBeginMember const&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, NonConstRBeginMember &>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, NonConstRBeginMember const&>);
+
+struct EnabledBorrowingRBeginMember {
+  constexpr int *rbegin() const { return globalBuff; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<EnabledBorrowingRBeginMember> = true;
+
+struct RBeginMemberFunction {
+  int x;
+  constexpr const int *rbegin() const { return &x; }
+  friend int* rbegin(RBeginMemberFunction const&);
+};
+
+struct EmptyPtrRBeginMember {
+  struct Empty {};
+  Empty x;
+  constexpr const Empty* rbegin() const { return &x; }
+};
+
+constexpr bool testRBeginMember() {
+  RBeginMember a;
+  assert(std::ranges::rbegin(a) == &a.x);
+  assert(std::ranges::crbegin(a) == &a.x);
+  static_assert(!std::is_invocable_v<RangeRBeginT, RBeginMember&&>);
+  static_assert(!std::is_invocable_v<RangeCRBeginT, RBeginMember&&>);
+
+  NonConstRBeginMember b;
+  assert(std::ranges::rbegin(b) == &b.x);
+  static_assert(!std::is_invocable_v<RangeCRBeginT, NonConstRBeginMember&>);
+
+  EnabledBorrowingRBeginMember c;
+  assert(std::ranges::rbegin(c) == globalBuff);
+  assert(std::ranges::crbegin(c) == globalBuff);
+  assert(std::ranges::rbegin(std::move(c)) == globalBuff);
+  assert(std::ranges::crbegin(std::move(c)) == globalBuff);
+
+  RBeginMemberFunction d;
+  assert(std::ranges::rbegin(d) == &d.x);
+  assert(std::ranges::crbegin(d) == &d.x);
+
+  EmptyPtrRBeginMember e;
+  assert(std::ranges::rbegin(e) == &e.x);
+  assert(std::ranges::crbegin(e) == &e.x);
+
+  return true;
+}
+
+
+struct RBeginFunction {
+  int x;
+  friend constexpr const int* rbegin(RBeginFunction const& bf) { return &bf.x; }
+};
+static_assert( std::is_invocable_v<RangeRBeginT,  RBeginFunction const&>);
+static_assert(!std::is_invocable_v<RangeRBeginT,  RBeginFunction &&>);
+static_assert(!std::is_invocable_v<RangeRBeginT,  RBeginFunction &>);
+static_assert( std::is_invocable_v<RangeCRBeginT, RBeginFunction const&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, RBeginFunction &>);
+
+struct RBeginFunctionReturnsInt {
+  friend int rbegin(RBeginFunctionReturnsInt const&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginFunctionReturnsInt const&>);
+
+struct RBeginFunctionReturnsVoidPtr {
+  friend void *rbegin(RBeginFunctionReturnsVoidPtr const&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginFunctionReturnsVoidPtr const&>);
+
+struct RBeginFunctionReturnsEmpty {
+  struct Empty {};
+  friend Empty rbegin(RBeginFunctionReturnsEmpty const&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginFunctionReturnsEmpty const&>);
+
+struct RBeginFunctionReturnsPtrConvertible {
+  struct iterator { operator int*() const; };
+  friend iterator rbegin(RBeginFunctionReturnsPtrConvertible const&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, RBeginFunctionReturnsPtrConvertible const&>);
+
+struct RBeginFunctionByValue {
+  friend constexpr int *rbegin(RBeginFunctionByValue) { return globalBuff + 1; }
+};
+static_assert(!std::is_invocable_v<RangeCRBeginT, RBeginFunctionByValue>);
+
+struct RBeginFunctionEnabledBorrowing {
+  friend constexpr int *rbegin(RBeginFunctionEnabledBorrowing) { return globalBuff + 2; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<RBeginFunctionEnabledBorrowing> = true;
+
+struct RBeginFunctionReturnsEmptyPtr {
+  struct Empty {};
+  Empty x;
+  friend constexpr const Empty *rbegin(RBeginFunctionReturnsEmptyPtr const& bf) { return &bf.x; }
+};
+
+struct RBeginFunctionWithDataMember {
+  int x;
+  int rbegin;
+  friend constexpr const int *rbegin(RBeginFunctionWithDataMember const& bf) { return &bf.x; }
+};
+
+struct RBeginFunctionWithPrivateBeginMember {
+  int y;
+  friend constexpr const int *rbegin(RBeginFunctionWithPrivateBeginMember const& bf) { return &bf.y; }
+private:
+  const int *rbegin() const;
+};
+
+constexpr bool testRBeginFunction() {
+  RBeginFunction a{};
+  const RBeginFunction aa{};
+  static_assert(!std::invocable<RangeRBeginT, decltype((a))>);
+  assert(std::ranges::crbegin(a) == &a.x);
+  assert(std::ranges::rbegin(aa) == &aa.x);
+  assert(std::ranges::crbegin(aa) == &aa.x);
+
+  RBeginFunctionByValue b{};
+  const RBeginFunctionByValue bb{};
+  assert(std::ranges::rbegin(b) == globalBuff + 1);
+  assert(std::ranges::crbegin(b) == globalBuff + 1);
+  assert(std::ranges::rbegin(bb) == globalBuff + 1);
+  assert(std::ranges::crbegin(bb) == globalBuff + 1);
+
+  RBeginFunctionEnabledBorrowing c{};
+  const RBeginFunctionEnabledBorrowing cc{};
+  assert(std::ranges::rbegin(std::move(c)) == globalBuff + 2);
+  assert(std::ranges::crbegin(std::move(c)) == globalBuff + 2);
+  assert(std::ranges::rbegin(std::move(cc)) == globalBuff + 2);
+  assert(std::ranges::crbegin(std::move(cc)) == globalBuff + 2);
+
+  RBeginFunctionReturnsEmptyPtr d{};
+  const RBeginFunctionReturnsEmptyPtr dd{};
+  static_assert(!std::invocable<RangeRBeginT, decltype((d))>);
+  assert(std::ranges::crbegin(d) == &d.x);
+  assert(std::ranges::rbegin(dd) == &dd.x);
+  assert(std::ranges::crbegin(dd) == &dd.x);
+
+  RBeginFunctionWithDataMember e{};
+  const RBeginFunctionWithDataMember ee{};
+  static_assert(!std::invocable<RangeRBeginT, decltype((e))>);
+  assert(std::ranges::rbegin(ee) == &ee.x);
+  assert(std::ranges::crbegin(e) == &e.x);
+  assert(std::ranges::crbegin(ee) == &ee.x);
+
+  RBeginFunctionWithPrivateBeginMember f{};
+  const RBeginFunctionWithPrivateBeginMember ff{};
+  static_assert(!std::invocable<RangeRBeginT, decltype((f))>);
+  assert(std::ranges::crbegin(f) == &f.y);
+  assert(std::ranges::rbegin(ff) == &ff.y);
+  assert(std::ranges::crbegin(ff) == &ff.y);
+
+  return true;
+}
+
+
+struct MemberBeginEnd {
+  int b, e;
+  char cb, ce;
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>(&b); }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>(&e); }
+  constexpr bidirectional_iterator<const char*> begin() const { return bidirectional_iterator<const char*>(&cb); }
+  constexpr bidirectional_iterator<const char*> end() const { return bidirectional_iterator<const char*>(&ce); }
+};
+static_assert( std::is_invocable_v<RangeRBeginT, MemberBeginEnd&>);
+static_assert( std::is_invocable_v<RangeRBeginT, MemberBeginEnd const&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, MemberBeginEnd const&>);
+
+struct FunctionBeginEnd {
+  int b, e;
+  char cb, ce;
+  friend constexpr bidirectional_iterator<int*> begin(FunctionBeginEnd& v) {
+    return bidirectional_iterator<int*>(&v.b);
+  }
+  friend constexpr bidirectional_iterator<int*> end(FunctionBeginEnd& v) { return bidirectional_iterator<int*>(&v.e); }
+  friend constexpr bidirectional_iterator<const char*> begin(const FunctionBeginEnd& v) {
+    return bidirectional_iterator<const char*>(&v.cb);
+  }
+  friend constexpr bidirectional_iterator<const char*> end(const FunctionBeginEnd& v) {
+    return bidirectional_iterator<const char*>(&v.ce);
+  }
+};
+static_assert( std::is_invocable_v<RangeRBeginT, FunctionBeginEnd&>);
+static_assert( std::is_invocable_v<RangeRBeginT, FunctionBeginEnd const&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, FunctionBeginEnd const&>);
+
+struct MemberBeginFunctionEnd {
+  int b, e;
+  char cb, ce;
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>(&b); }
+  friend constexpr bidirectional_iterator<int*> end(MemberBeginFunctionEnd& v) {
+    return bidirectional_iterator<int*>(&v.e);
+  }
+  constexpr bidirectional_iterator<const char*> begin() const { return bidirectional_iterator<const char*>(&cb); }
+  friend constexpr bidirectional_iterator<const char*> end(const MemberBeginFunctionEnd& v) {
+    return bidirectional_iterator<const char*>(&v.ce);
+  }
+};
+static_assert( std::is_invocable_v<RangeRBeginT, MemberBeginFunctionEnd&>);
+static_assert( std::is_invocable_v<RangeRBeginT, MemberBeginFunctionEnd const&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, MemberBeginFunctionEnd const&>);
+
+struct FunctionBeginMemberEnd {
+  int b, e;
+  char cb, ce;
+  friend constexpr bidirectional_iterator<int*> begin(FunctionBeginMemberEnd& v) {
+    return bidirectional_iterator<int*>(&v.b);
+  }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>(&e); }
+  friend constexpr bidirectional_iterator<const char*> begin(const FunctionBeginMemberEnd& v) {
+    return bidirectional_iterator<const char*>(&v.cb);
+  }
+  constexpr bidirectional_iterator<const char*> end() const { return bidirectional_iterator<const char*>(&ce); }
+};
+static_assert( std::is_invocable_v<RangeRBeginT, FunctionBeginMemberEnd&>);
+static_assert( std::is_invocable_v<RangeRBeginT, FunctionBeginMemberEnd const&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, FunctionBeginMemberEnd const&>);
+
+struct MemberBeginEndDifferentTypes {
+  bidirectional_iterator<int*> begin();
+  bidirectional_iterator<const int*> end();
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, MemberBeginEndDifferentTypes&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, MemberBeginEndDifferentTypes&>);
+
+struct FunctionBeginEndDifferentTypes {
+  friend bidirectional_iterator<int*> begin(FunctionBeginEndDifferentTypes&);
+  friend bidirectional_iterator<const int*> end(FunctionBeginEndDifferentTypes&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, FunctionBeginEndDifferentTypes&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, FunctionBeginEndDifferentTypes&>);
+
+struct MemberBeginEndForwardIterators {
+  forward_iterator<int*> begin();
+  forward_iterator<int*> end();
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, MemberBeginEndForwardIterators&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, MemberBeginEndForwardIterators&>);
+
+struct FunctionBeginEndForwardIterators {
+  friend forward_iterator<int*> begin(FunctionBeginEndForwardIterators&);
+  friend forward_iterator<int*> end(FunctionBeginEndForwardIterators&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, FunctionBeginEndForwardIterators&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, FunctionBeginEndForwardIterators&>);
+
+struct MemberBeginOnly {
+  bidirectional_iterator<int*> begin() const;
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, MemberBeginOnly&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, MemberBeginOnly&>);
+
+struct FunctionBeginOnly {
+  friend bidirectional_iterator<int*> begin(FunctionBeginOnly&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, FunctionBeginOnly&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, FunctionBeginOnly&>);
+
+struct MemberEndOnly {
+  bidirectional_iterator<int*> end() const;
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, MemberEndOnly&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, MemberEndOnly&>);
+
+struct FunctionEndOnly {
+  friend bidirectional_iterator<int*> end(FunctionEndOnly&);
+};
+static_assert(!std::is_invocable_v<RangeRBeginT, FunctionEndOnly&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, FunctionEndOnly&>);
+
+// Make sure there is no clash between the following cases:
+// - the case that handles classes defining member `rbegin` and `rend` functions;
+// - the case that handles classes defining `begin` and `end` functions returning reversible iterators.
+struct MemberBeginAndRBegin {
+  int* begin() const;
+  int* end() const;
+  int* rbegin() const;
+  int* rend() const;
+};
+static_assert( std::is_invocable_v<RangeRBeginT, MemberBeginAndRBegin&>);
+static_assert( std::is_invocable_v<RangeCRBeginT, MemberBeginAndRBegin&>);
+static_assert( std::same_as<std::invoke_result_t<RangeRBeginT, MemberBeginAndRBegin&>, int*>);
+static_assert( std::same_as<std::invoke_result_t<RangeCRBeginT, MemberBeginAndRBegin&>, int*>);
+
+constexpr bool testBeginEnd() {
+  MemberBeginEnd a{};
+  const MemberBeginEnd aa{};
+  assert(base(std::ranges::rbegin(a).base()) == &a.e);
+  assert(base(std::ranges::crbegin(a).base()) == &a.ce);
+  assert(base(std::ranges::rbegin(aa).base()) == &aa.ce);
+  assert(base(std::ranges::crbegin(aa).base()) == &aa.ce);
+
+  FunctionBeginEnd b{};
+  const FunctionBeginEnd bb{};
+  assert(base(std::ranges::rbegin(b).base()) == &b.e);
+  assert(base(std::ranges::crbegin(b).base()) == &b.ce);
+  assert(base(std::ranges::rbegin(bb).base()) == &bb.ce);
+  assert(base(std::ranges::crbegin(bb).base()) == &bb.ce);
+
+  MemberBeginFunctionEnd c{};
+  const MemberBeginFunctionEnd cc{};
+  assert(base(std::ranges::rbegin(c).base()) == &c.e);
+  assert(base(std::ranges::crbegin(c).base()) == &c.ce);
+  assert(base(std::ranges::rbegin(cc).base()) == &cc.ce);
+  assert(base(std::ranges::crbegin(cc).base()) == &cc.ce);
+
+  FunctionBeginMemberEnd d{};
+  const FunctionBeginMemberEnd dd{};
+  assert(base(std::ranges::rbegin(d).base()) == &d.e);
+  assert(base(std::ranges::crbegin(d).base()) == &d.ce);
+  assert(base(std::ranges::rbegin(dd).base()) == &dd.ce);
+  assert(base(std::ranges::crbegin(dd).base()) == &dd.ce);
+
+  return true;
+}
+
+
+ASSERT_NOEXCEPT(std::ranges::rbegin(std::declval<int (&)[10]>()));
+ASSERT_NOEXCEPT(std::ranges::crbegin(std::declval<int (&)[10]>()));
+
+struct NoThrowMemberRBegin {
+  ThrowingIterator<int> rbegin() const noexcept; // auto(t.rbegin()) doesn't throw
+} ntmb;
+static_assert(noexcept(std::ranges::rbegin(ntmb)));
+static_assert(noexcept(std::ranges::crbegin(ntmb)));
+
+struct NoThrowADLRBegin {
+  friend ThrowingIterator<int> rbegin(NoThrowADLRBegin&) noexcept;  // auto(rbegin(t)) doesn't throw
+  friend ThrowingIterator<int> rbegin(const NoThrowADLRBegin&) noexcept;
+} ntab;
+static_assert(noexcept(std::ranges::rbegin(ntab)));
+static_assert(noexcept(std::ranges::crbegin(ntab)));
+
+struct NoThrowMemberRBeginReturnsRef {
+  ThrowingIterator<int>& rbegin() const noexcept; // auto(t.rbegin()) may throw
+} ntmbrr;
+static_assert(!noexcept(std::ranges::rbegin(ntmbrr)));
+static_assert(!noexcept(std::ranges::crbegin(ntmbrr)));
+
+struct RBeginReturnsArrayRef {
+    auto rbegin() const noexcept -> int(&)[10];
+} brar;
+static_assert(noexcept(std::ranges::rbegin(brar)));
+static_assert(noexcept(std::ranges::crbegin(brar)));
+
+struct NoThrowBeginThrowingEnd {
+  int* begin() const noexcept;
+  int* end() const;
+} ntbte;
+static_assert(!noexcept(std::ranges::rbegin(ntbte)));
+static_assert(!noexcept(std::ranges::crbegin(ntbte)));
+
+struct NoThrowEndThrowingBegin {
+  int* begin() const;
+  int* end() const noexcept;
+} ntetb;
+static_assert(noexcept(std::ranges::rbegin(ntetb)));
+static_assert(noexcept(std::ranges::crbegin(ntetb)));
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeRBeginT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeRBeginT, Holder<Incomplete>*&>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeCRBeginT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  static_assert(testReturnTypes());
+
+  testArray();
+  static_assert(testArray());
+
+  testRBeginMember();
+  static_assert(testRBeginMember());
+
+  testRBeginFunction();
+  static_assert(testRBeginFunction());
+
+  testBeginEnd();
+  static_assert(testBeginEnd());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/rbegin.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rbegin.verify.cpp
new file mode 100644
index 0000000..0efac9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rbegin.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::rbegin
+
+#include <ranges>
+
+struct NonBorrowedRange {
+  int* begin() const;
+  int* end() const;
+};
+static_assert(!std::ranges::enable_borrowed_range<NonBorrowedRange>);
+
+// Verify that if the expression is an rvalue and `enable_borrowed_range` is false, `ranges::rbegin` is ill-formed.
+void test() {
+  std::ranges::rbegin(NonBorrowedRange());
+  // expected-error-re@-1 {{{{call to deleted function call operator in type 'const (std::ranges::)?__rbegin::__fn'}}}}
+  // expected-error@-2  {{attempt to use a deleted function}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/rend.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rend.pass.cpp
new file mode 100644
index 0000000..5ba244b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rend.pass.cpp
@@ -0,0 +1,549 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::rend
+// std::ranges::crend
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeREndT = decltype(std::ranges::rend);
+using RangeCREndT = decltype(std::ranges::crend);
+
+static int globalBuff[8];
+
+static_assert(!std::is_invocable_v<RangeREndT, int (&&)[]>);
+static_assert(!std::is_invocable_v<RangeREndT, int (&)[]>);
+static_assert(!std::is_invocable_v<RangeREndT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeREndT, int (&)[10]>);
+static_assert(!std::is_invocable_v<RangeCREndT, int (&&)[]>);
+static_assert(!std::is_invocable_v<RangeCREndT, int (&)[]>);
+static_assert(!std::is_invocable_v<RangeCREndT, int (&&)[10]>);
+static_assert( std::is_invocable_v<RangeCREndT, int (&)[10]>);
+
+struct Incomplete;
+static_assert(!std::is_invocable_v<RangeREndT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeREndT, Incomplete(&&)[42]>);
+static_assert(!std::is_invocable_v<RangeCREndT, Incomplete(&&)[]>);
+static_assert(!std::is_invocable_v<RangeCREndT, Incomplete(&&)[42]>);
+
+struct REndMember {
+  int x;
+  const int* rbegin() const;
+  constexpr const int* rend() const { return &x; }
+};
+
+// Ensure that we can't call with rvalues with borrowing disabled.
+static_assert( std::is_invocable_v<RangeREndT, REndMember&>);
+static_assert(!std::is_invocable_v<RangeREndT, REndMember &&>);
+static_assert( std::is_invocable_v<RangeREndT, REndMember const&>);
+static_assert(!std::is_invocable_v<RangeREndT, REndMember const&&>);
+static_assert( std::is_invocable_v<RangeCREndT, REndMember &>);
+static_assert(!std::is_invocable_v<RangeCREndT, REndMember &&>);
+static_assert( std::is_invocable_v<RangeCREndT, REndMember const&>);
+static_assert(!std::is_invocable_v<RangeCREndT, REndMember const&&>);
+
+constexpr bool testReturnTypes() {
+  {
+    int *x[2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::rend(x)), std::reverse_iterator<int**>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::crend(x)), std::reverse_iterator<int* const*>);
+  }
+
+  {
+    int x[2][2];
+    ASSERT_SAME_TYPE(decltype(std::ranges::rend(x)), std::reverse_iterator<int(*)[2]>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::crend(x)), std::reverse_iterator<const int(*)[2]>);
+  }
+
+  {
+    struct Different {
+      char* rbegin();
+      sentinel_wrapper<char*>& rend();
+      short* rbegin() const;
+      sentinel_wrapper<short*>& rend() const;
+    } x;
+    ASSERT_SAME_TYPE(decltype(std::ranges::rend(x)), sentinel_wrapper<char*>);
+    ASSERT_SAME_TYPE(decltype(std::ranges::crend(x)), sentinel_wrapper<short*>);
+  }
+
+  return true;
+}
+
+constexpr bool testArray() {
+  int a[2];
+  assert(std::ranges::rend(a).base() == a);
+  assert(std::ranges::crend(a).base() == a);
+
+  int b[2][2];
+  assert(std::ranges::rend(b).base() == b);
+  assert(std::ranges::crend(b).base() == b);
+
+  REndMember c[2];
+  assert(std::ranges::rend(c).base() == c);
+  assert(std::ranges::crend(c).base() == c);
+
+  return true;
+}
+
+struct REndMemberReturnsInt {
+  int rbegin() const;
+  int rend() const;
+};
+static_assert(!std::is_invocable_v<RangeREndT, REndMemberReturnsInt const&>);
+
+struct REndMemberReturnsVoidPtr {
+  const void *rbegin() const;
+  const void *rend() const;
+};
+static_assert(!std::is_invocable_v<RangeREndT, REndMemberReturnsVoidPtr const&>);
+
+struct PtrConvertible {
+  operator int*() const;
+};
+struct PtrConvertibleREndMember {
+  PtrConvertible rbegin() const;
+  PtrConvertible rend() const;
+};
+static_assert(!std::is_invocable_v<RangeREndT, PtrConvertibleREndMember const&>);
+
+struct NoRBeginMember {
+  constexpr const int* rend();
+};
+static_assert(!std::is_invocable_v<RangeREndT, NoRBeginMember const&>);
+
+struct NonConstREndMember {
+  int x;
+  constexpr int* rbegin() { return nullptr; }
+  constexpr int* rend() { return &x; }
+};
+static_assert( std::is_invocable_v<RangeREndT,  NonConstREndMember &>);
+static_assert(!std::is_invocable_v<RangeREndT,  NonConstREndMember const&>);
+static_assert(!std::is_invocable_v<RangeCREndT, NonConstREndMember &>);
+static_assert(!std::is_invocable_v<RangeCREndT, NonConstREndMember const&>);
+
+struct EnabledBorrowingREndMember {
+  constexpr int* rbegin() const { return nullptr; }
+  constexpr int* rend() const { return &globalBuff[0]; }
+};
+
+template <>
+inline constexpr bool std::ranges::enable_borrowed_range<EnabledBorrowingREndMember> = true;
+
+struct REndMemberFunction {
+  int x;
+  constexpr const int* rbegin() const { return nullptr; }
+  constexpr const int* rend() const { return &x; }
+  friend constexpr int* rend(REndMemberFunction const&);
+};
+
+struct Empty { };
+struct EmptyEndMember {
+  Empty rbegin() const;
+  Empty rend() const;
+};
+static_assert(!std::is_invocable_v<RangeREndT, EmptyEndMember const&>);
+
+struct EmptyPtrREndMember {
+  Empty x;
+  constexpr const Empty* rbegin() const { return nullptr; }
+  constexpr const Empty* rend() const { return &x; }
+};
+
+constexpr bool testREndMember() {
+  REndMember a;
+  assert(std::ranges::rend(a) == &a.x);
+  assert(std::ranges::crend(a) == &a.x);
+
+  NonConstREndMember b;
+  assert(std::ranges::rend(b) == &b.x);
+  static_assert(!std::is_invocable_v<RangeCREndT, decltype((b))>);
+
+  EnabledBorrowingREndMember c;
+  assert(std::ranges::rend(std::move(c)) == &globalBuff[0]);
+  assert(std::ranges::crend(std::move(c)) == &globalBuff[0]);
+
+  REndMemberFunction d;
+  assert(std::ranges::rend(d) == &d.x);
+  assert(std::ranges::crend(d) == &d.x);
+
+  EmptyPtrREndMember e;
+  assert(std::ranges::rend(e) == &e.x);
+  assert(std::ranges::crend(e) == &e.x);
+
+  return true;
+}
+
+struct REndFunction {
+  int x;
+  friend constexpr const int* rbegin(REndFunction const&) { return nullptr; }
+  friend constexpr const int* rend(REndFunction const& bf) { return &bf.x; }
+};
+
+static_assert( std::is_invocable_v<RangeREndT, REndFunction const&>);
+static_assert(!std::is_invocable_v<RangeREndT, REndFunction &&>);
+
+static_assert( std::is_invocable_v<RangeREndT,  REndFunction const&>);
+static_assert(!std::is_invocable_v<RangeREndT,  REndFunction &&>);
+static_assert(!std::is_invocable_v<RangeREndT,  REndFunction &>);
+static_assert( std::is_invocable_v<RangeCREndT, REndFunction const&>);
+static_assert( std::is_invocable_v<RangeCREndT, REndFunction &>);
+
+struct REndFunctionReturnsInt {
+  friend constexpr int rbegin(REndFunctionReturnsInt const&);
+  friend constexpr int rend(REndFunctionReturnsInt const&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, REndFunctionReturnsInt const&>);
+
+struct REndFunctionReturnsVoidPtr {
+  friend constexpr void* rbegin(REndFunctionReturnsVoidPtr const&);
+  friend constexpr void* rend(REndFunctionReturnsVoidPtr const&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, REndFunctionReturnsVoidPtr const&>);
+
+struct REndFunctionReturnsEmpty {
+  friend constexpr Empty rbegin(REndFunctionReturnsEmpty const&);
+  friend constexpr Empty rend(REndFunctionReturnsEmpty const&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, REndFunctionReturnsEmpty const&>);
+
+struct REndFunctionReturnsPtrConvertible {
+  friend constexpr PtrConvertible rbegin(REndFunctionReturnsPtrConvertible const&);
+  friend constexpr PtrConvertible rend(REndFunctionReturnsPtrConvertible const&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, REndFunctionReturnsPtrConvertible const&>);
+
+struct NoRBeginFunction {
+  friend constexpr const int* rend(NoRBeginFunction const&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, NoRBeginFunction const&>);
+
+struct REndFunctionByValue {
+  friend constexpr int* rbegin(REndFunctionByValue) { return nullptr; }
+  friend constexpr int* rend(REndFunctionByValue) { return &globalBuff[1]; }
+};
+static_assert(!std::is_invocable_v<RangeCREndT, REndFunctionByValue>);
+
+struct REndFunctionEnabledBorrowing {
+  friend constexpr int* rbegin(REndFunctionEnabledBorrowing) { return nullptr; }
+  friend constexpr int* rend(REndFunctionEnabledBorrowing) { return &globalBuff[2]; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<REndFunctionEnabledBorrowing> = true;
+
+struct REndFunctionReturnsEmptyPtr {
+  Empty x;
+  friend constexpr const Empty* rbegin(REndFunctionReturnsEmptyPtr const&) { return nullptr; }
+  friend constexpr const Empty* rend(REndFunctionReturnsEmptyPtr const& bf) { return &bf.x; }
+};
+
+struct REndFunctionWithDataMember {
+  int x;
+  int rend;
+  friend constexpr const int* rbegin(REndFunctionWithDataMember const&) { return nullptr; }
+  friend constexpr const int* rend(REndFunctionWithDataMember const& bf) { return &bf.x; }
+};
+
+struct REndFunctionWithPrivateEndMember : private REndMember {
+  int y;
+  friend constexpr const int* rbegin(REndFunctionWithPrivateEndMember const&) { return nullptr; }
+  friend constexpr const int* rend(REndFunctionWithPrivateEndMember const& bf) { return &bf.y; }
+};
+
+struct RBeginMemberEndFunction {
+  int x;
+  constexpr const int* rbegin() const { return nullptr; }
+  friend constexpr const int* rend(RBeginMemberEndFunction const& bf) { return &bf.x; }
+};
+
+constexpr bool testREndFunction() {
+  const REndFunction a{};
+  assert(std::ranges::rend(a) == &a.x);
+  assert(std::ranges::crend(a) == &a.x);
+  REndFunction aa{};
+  static_assert(!std::is_invocable_v<RangeREndT, decltype((aa))>);
+  assert(std::ranges::crend(aa) == &aa.x);
+
+  REndFunctionByValue b;
+  assert(std::ranges::rend(b) == &globalBuff[1]);
+  assert(std::ranges::crend(b) == &globalBuff[1]);
+
+  REndFunctionEnabledBorrowing c;
+  assert(std::ranges::rend(std::move(c)) == &globalBuff[2]);
+  assert(std::ranges::crend(std::move(c)) == &globalBuff[2]);
+
+  const REndFunctionReturnsEmptyPtr d{};
+  assert(std::ranges::rend(d) == &d.x);
+  assert(std::ranges::crend(d) == &d.x);
+  REndFunctionReturnsEmptyPtr dd{};
+  static_assert(!std::is_invocable_v<RangeREndT, decltype((dd))>);
+  assert(std::ranges::crend(dd) == &dd.x);
+
+  const REndFunctionWithDataMember e{};
+  assert(std::ranges::rend(e) == &e.x);
+  assert(std::ranges::crend(e) == &e.x);
+  REndFunctionWithDataMember ee{};
+  static_assert(!std::is_invocable_v<RangeREndT, decltype((ee))>);
+  assert(std::ranges::crend(ee) == &ee.x);
+
+  const REndFunctionWithPrivateEndMember f{};
+  assert(std::ranges::rend(f) == &f.y);
+  assert(std::ranges::crend(f) == &f.y);
+  REndFunctionWithPrivateEndMember ff{};
+  static_assert(!std::is_invocable_v<RangeREndT, decltype((ff))>);
+  assert(std::ranges::crend(ff) == &ff.y);
+
+  const RBeginMemberEndFunction g{};
+  assert(std::ranges::rend(g) == &g.x);
+  assert(std::ranges::crend(g) == &g.x);
+  RBeginMemberEndFunction gg{};
+  static_assert(!std::is_invocable_v<RangeREndT, decltype((gg))>);
+  assert(std::ranges::crend(gg) == &gg.x);
+
+  return true;
+}
+
+
+struct MemberBeginEnd {
+  int b, e;
+  char cb, ce;
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>(&b); }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>(&e); }
+  constexpr bidirectional_iterator<const char*> begin() const { return bidirectional_iterator<const char*>(&cb); }
+  constexpr bidirectional_iterator<const char*> end() const { return bidirectional_iterator<const char*>(&ce); }
+};
+static_assert( std::is_invocable_v<RangeREndT, MemberBeginEnd&>);
+static_assert( std::is_invocable_v<RangeREndT, MemberBeginEnd const&>);
+static_assert( std::is_invocable_v<RangeCREndT, MemberBeginEnd const&>);
+
+struct FunctionBeginEnd {
+  int b, e;
+  char cb, ce;
+  friend constexpr bidirectional_iterator<int*> begin(FunctionBeginEnd& v) {
+    return bidirectional_iterator<int*>(&v.b);
+  }
+  friend constexpr bidirectional_iterator<int*> end(FunctionBeginEnd& v) { return bidirectional_iterator<int*>(&v.e); }
+  friend constexpr bidirectional_iterator<const char*> begin(const FunctionBeginEnd& v) {
+    return bidirectional_iterator<const char*>(&v.cb);
+  }
+  friend constexpr bidirectional_iterator<const char*> end(const FunctionBeginEnd& v) {
+    return bidirectional_iterator<const char*>(&v.ce);
+  }
+};
+static_assert( std::is_invocable_v<RangeREndT, FunctionBeginEnd&>);
+static_assert( std::is_invocable_v<RangeREndT, FunctionBeginEnd const&>);
+static_assert( std::is_invocable_v<RangeCREndT, FunctionBeginEnd const&>);
+
+struct MemberBeginFunctionEnd {
+  int b, e;
+  char cb, ce;
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>(&b); }
+  friend constexpr bidirectional_iterator<int*> end(MemberBeginFunctionEnd& v) {
+    return bidirectional_iterator<int*>(&v.e);
+  }
+  constexpr bidirectional_iterator<const char*> begin() const { return bidirectional_iterator<const char*>(&cb); }
+  friend constexpr bidirectional_iterator<const char*> end(const MemberBeginFunctionEnd& v) {
+    return bidirectional_iterator<const char*>(&v.ce);
+  }
+};
+static_assert( std::is_invocable_v<RangeREndT, MemberBeginFunctionEnd&>);
+static_assert( std::is_invocable_v<RangeREndT, MemberBeginFunctionEnd const&>);
+static_assert( std::is_invocable_v<RangeCREndT, MemberBeginFunctionEnd const&>);
+
+struct FunctionBeginMemberEnd {
+  int b, e;
+  char cb, ce;
+  friend constexpr bidirectional_iterator<int*> begin(FunctionBeginMemberEnd& v) {
+    return bidirectional_iterator<int*>(&v.b);
+  }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>(&e); }
+  friend constexpr bidirectional_iterator<const char*> begin(const FunctionBeginMemberEnd& v) {
+    return bidirectional_iterator<const char*>(&v.cb);
+  }
+  constexpr bidirectional_iterator<const char*> end() const { return bidirectional_iterator<const char*>(&ce); }
+};
+static_assert( std::is_invocable_v<RangeREndT, FunctionBeginMemberEnd&>);
+static_assert( std::is_invocable_v<RangeREndT, FunctionBeginMemberEnd const&>);
+static_assert( std::is_invocable_v<RangeCREndT, FunctionBeginMemberEnd const&>);
+
+struct MemberBeginEndDifferentTypes {
+  bidirectional_iterator<int*> begin();
+  bidirectional_iterator<const int*> end();
+};
+static_assert(!std::is_invocable_v<RangeREndT, MemberBeginEndDifferentTypes&>);
+static_assert(!std::is_invocable_v<RangeCREndT, MemberBeginEndDifferentTypes&>);
+
+struct FunctionBeginEndDifferentTypes {
+  friend bidirectional_iterator<int*> begin(FunctionBeginEndDifferentTypes&);
+  friend bidirectional_iterator<const int*> end(FunctionBeginEndDifferentTypes&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, FunctionBeginEndDifferentTypes&>);
+static_assert(!std::is_invocable_v<RangeCREndT, FunctionBeginEndDifferentTypes&>);
+
+struct MemberBeginEndForwardIterators {
+  forward_iterator<int*> begin();
+  forward_iterator<int*> end();
+};
+static_assert(!std::is_invocable_v<RangeREndT, MemberBeginEndForwardIterators&>);
+static_assert(!std::is_invocable_v<RangeCREndT, MemberBeginEndForwardIterators&>);
+
+struct FunctionBeginEndForwardIterators {
+  friend forward_iterator<int*> begin(FunctionBeginEndForwardIterators&);
+  friend forward_iterator<int*> end(FunctionBeginEndForwardIterators&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, FunctionBeginEndForwardIterators&>);
+static_assert(!std::is_invocable_v<RangeCREndT, FunctionBeginEndForwardIterators&>);
+
+struct MemberBeginOnly {
+  bidirectional_iterator<int*> begin() const;
+};
+static_assert(!std::is_invocable_v<RangeREndT, MemberBeginOnly&>);
+static_assert(!std::is_invocable_v<RangeCREndT, MemberBeginOnly&>);
+
+struct FunctionBeginOnly {
+  friend bidirectional_iterator<int*> begin(FunctionBeginOnly&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, FunctionBeginOnly&>);
+static_assert(!std::is_invocable_v<RangeCREndT, FunctionBeginOnly&>);
+
+struct MemberEndOnly {
+  bidirectional_iterator<int*> end() const;
+};
+static_assert(!std::is_invocable_v<RangeREndT, MemberEndOnly&>);
+static_assert(!std::is_invocable_v<RangeCREndT, MemberEndOnly&>);
+
+struct FunctionEndOnly {
+  friend bidirectional_iterator<int*> end(FunctionEndOnly&);
+};
+static_assert(!std::is_invocable_v<RangeREndT, FunctionEndOnly&>);
+static_assert(!std::is_invocable_v<RangeCREndT, FunctionEndOnly&>);
+
+// Make sure there is no clash between the following cases:
+// - the case that handles classes defining member `rbegin` and `rend` functions;
+// - the case that handles classes defining `begin` and `end` functions returning reversible iterators.
+struct MemberBeginAndRBegin {
+  int* begin() const;
+  int* end() const;
+  int* rbegin() const;
+  int* rend() const;
+};
+static_assert( std::is_invocable_v<RangeREndT, MemberBeginAndRBegin&>);
+static_assert( std::is_invocable_v<RangeCREndT, MemberBeginAndRBegin&>);
+static_assert( std::same_as<std::invoke_result_t<RangeREndT, MemberBeginAndRBegin&>, int*>);
+static_assert( std::same_as<std::invoke_result_t<RangeCREndT, MemberBeginAndRBegin&>, int*>);
+
+constexpr bool testBeginEnd() {
+  MemberBeginEnd a{};
+  const MemberBeginEnd aa{};
+  assert(base(std::ranges::rend(a).base()) == &a.b);
+  assert(base(std::ranges::crend(a).base()) == &a.cb);
+  assert(base(std::ranges::rend(aa).base()) == &aa.cb);
+  assert(base(std::ranges::crend(aa).base()) == &aa.cb);
+
+  FunctionBeginEnd b{};
+  const FunctionBeginEnd bb{};
+  assert(base(std::ranges::rend(b).base()) == &b.b);
+  assert(base(std::ranges::crend(b).base()) == &b.cb);
+  assert(base(std::ranges::rend(bb).base()) == &bb.cb);
+  assert(base(std::ranges::crend(bb).base()) == &bb.cb);
+
+  MemberBeginFunctionEnd c{};
+  const MemberBeginFunctionEnd cc{};
+  assert(base(std::ranges::rend(c).base()) == &c.b);
+  assert(base(std::ranges::crend(c).base()) == &c.cb);
+  assert(base(std::ranges::rend(cc).base()) == &cc.cb);
+  assert(base(std::ranges::crend(cc).base()) == &cc.cb);
+
+  FunctionBeginMemberEnd d{};
+  const FunctionBeginMemberEnd dd{};
+  assert(base(std::ranges::rend(d).base()) == &d.b);
+  assert(base(std::ranges::crend(d).base()) == &d.cb);
+  assert(base(std::ranges::rend(dd).base()) == &dd.cb);
+  assert(base(std::ranges::crend(dd).base()) == &dd.cb);
+
+  return true;
+}
+
+
+ASSERT_NOEXCEPT(std::ranges::rend(std::declval<int (&)[10]>()));
+ASSERT_NOEXCEPT(std::ranges::crend(std::declval<int (&)[10]>()));
+
+struct NoThrowMemberREnd {
+  ThrowingIterator<int> rbegin() const;
+  ThrowingIterator<int> rend() const noexcept; // auto(t.rend()) doesn't throw
+} ntmre;
+static_assert(noexcept(std::ranges::rend(ntmre)));
+static_assert(noexcept(std::ranges::crend(ntmre)));
+
+struct NoThrowADLREnd {
+  ThrowingIterator<int> rbegin() const;
+  friend ThrowingIterator<int> rend(NoThrowADLREnd&) noexcept;  // auto(rend(t)) doesn't throw
+  friend ThrowingIterator<int> rend(const NoThrowADLREnd&) noexcept;
+} ntare;
+static_assert(noexcept(std::ranges::rend(ntare)));
+static_assert(noexcept(std::ranges::crend(ntare)));
+
+struct NoThrowMemberREndReturnsRef {
+  ThrowingIterator<int> rbegin() const;
+  ThrowingIterator<int>& rend() const noexcept; // auto(t.rend()) may throw
+} ntmrerr;
+static_assert(!noexcept(std::ranges::rend(ntmrerr)));
+static_assert(!noexcept(std::ranges::crend(ntmrerr)));
+
+struct REndReturnsArrayRef {
+    auto rbegin() const noexcept -> int(&)[10];
+    auto rend() const noexcept -> int(&)[10];
+} rerar;
+static_assert(noexcept(std::ranges::rend(rerar)));
+static_assert(noexcept(std::ranges::crend(rerar)));
+
+struct NoThrowBeginThrowingEnd {
+  int* begin() const noexcept;
+  int* end() const;
+} ntbte;
+static_assert(noexcept(std::ranges::rend(ntbte)));
+static_assert(noexcept(std::ranges::crend(ntbte)));
+
+struct NoThrowEndThrowingBegin {
+  int* begin() const;
+  int* end() const noexcept;
+} ntetb;
+static_assert(!noexcept(std::ranges::rend(ntetb)));
+static_assert(!noexcept(std::ranges::crend(ntetb)));
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeREndT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeREndT, Holder<Incomplete>*&>);
+static_assert(!std::is_invocable_v<RangeCREndT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeCREndT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  static_assert(testReturnTypes());
+
+  testArray();
+  static_assert(testArray());
+
+  testREndMember();
+  static_assert(testREndMember());
+
+  testREndFunction();
+  static_assert(testREndFunction());
+
+  testBeginEnd();
+  static_assert(testBeginEnd());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/rend.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rend.verify.cpp
new file mode 100644
index 0000000..0c57ba2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/rend.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::rend
+
+#include <ranges>
+
+struct NonBorrowedRange {
+  int* begin() const;
+  int* end() const;
+};
+static_assert(!std::ranges::enable_borrowed_range<NonBorrowedRange>);
+
+// Verify that if the expression is an rvalue and `enable_borrowed_range` is false, `ranges::rend` is ill-formed.
+void test() {
+  std::ranges::rend(NonBorrowedRange());
+  // expected-error-re@-1 {{{{call to deleted function call operator in type 'const (std::ranges::)?__rend::__fn'}}}}
+  // expected-error@-2  {{attempt to use a deleted function}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/size.pass.cpp
new file mode 100644
index 0000000..0568173
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/size.pass.cpp
@@ -0,0 +1,335 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::size
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeSizeT = decltype(std::ranges::size);
+
+static_assert(!std::is_invocable_v<RangeSizeT, int[]>);
+static_assert( std::is_invocable_v<RangeSizeT, int[1]>);
+static_assert( std::is_invocable_v<RangeSizeT, int (&&)[1]>);
+static_assert( std::is_invocable_v<RangeSizeT, int (&)[1]>);
+
+struct Incomplete;
+static_assert(!std::is_invocable_v<RangeSizeT, Incomplete[]>);
+static_assert(!std::is_invocable_v<RangeSizeT, Incomplete(&)[]>);
+static_assert(!std::is_invocable_v<RangeSizeT, Incomplete(&&)[]>);
+
+extern Incomplete array_of_incomplete[42];
+static_assert(std::ranges::size(array_of_incomplete) == 42);
+static_assert(std::ranges::size(std::move(array_of_incomplete)) == 42);
+static_assert(std::ranges::size(std::as_const(array_of_incomplete)) == 42);
+static_assert(std::ranges::size(static_cast<const Incomplete(&&)[42]>(array_of_incomplete)) == 42);
+
+struct SizeMember {
+  constexpr size_t size() { return 42; }
+};
+
+struct StaticSizeMember {
+  constexpr static size_t size() { return 42; }
+};
+
+static_assert(!std::is_invocable_v<RangeSizeT, const SizeMember>);
+
+struct SizeFunction {
+  friend constexpr size_t size(SizeFunction) { return 42; }
+};
+
+// Make sure the size member is preferred.
+struct SizeMemberAndFunction {
+  constexpr size_t size() { return 42; }
+  friend constexpr size_t size(SizeMemberAndFunction) { return 0; }
+};
+
+bool constexpr testArrayType() {
+  int a[4];
+  int b[1];
+  SizeMember c[4];
+  SizeFunction d[4];
+
+  assert(std::ranges::size(a) == 4);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(a)), size_t);
+  assert(std::ranges::size(b) == 1);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(b)), size_t);
+  assert(std::ranges::size(c) == 4);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(c)), size_t);
+  assert(std::ranges::size(d) == 4);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(d)), size_t);
+
+  return true;
+}
+
+struct SizeMemberConst {
+  constexpr size_t size() const { return 42; }
+};
+
+struct SizeMemberSigned {
+  constexpr long size() { return 42; }
+};
+
+bool constexpr testHasSizeMember() {
+  assert(std::ranges::size(SizeMember()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(SizeMember())), size_t);
+
+  const SizeMemberConst sizeMemberConst;
+  assert(std::ranges::size(sizeMemberConst) == 42);
+
+  assert(std::ranges::size(SizeMemberAndFunction()) == 42);
+
+  assert(std::ranges::size(SizeMemberSigned()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(SizeMemberSigned())), long);
+
+  assert(std::ranges::size(StaticSizeMember()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(StaticSizeMember())), size_t);
+
+  return true;
+}
+
+struct MoveOnlySizeFunction {
+  MoveOnlySizeFunction() = default;
+  MoveOnlySizeFunction(MoveOnlySizeFunction &&) = default;
+  MoveOnlySizeFunction(MoveOnlySizeFunction const&) = delete;
+
+  friend constexpr size_t size(MoveOnlySizeFunction) { return 42; }
+};
+
+enum EnumSizeFunction {
+  a, b
+};
+
+constexpr size_t size(EnumSizeFunction) { return 42; }
+
+struct SizeFunctionConst {
+  friend constexpr size_t size(const SizeFunctionConst) { return 42; }
+};
+
+struct SizeFunctionRef {
+  friend constexpr size_t size(SizeFunctionRef&) { return 42; }
+};
+
+struct SizeFunctionConstRef {
+  friend constexpr size_t size(SizeFunctionConstRef const&) { return 42; }
+};
+
+struct SizeFunctionSigned {
+  friend constexpr long size(SizeFunctionSigned) { return 42; }
+};
+
+bool constexpr testHasSizeFunction() {
+  assert(std::ranges::size(SizeFunction()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(SizeFunction())), size_t);
+  static_assert(!std::is_invocable_v<RangeSizeT, MoveOnlySizeFunction>);
+  assert(std::ranges::size(EnumSizeFunction()) == 42);
+  assert(std::ranges::size(SizeFunctionConst()) == 42);
+
+  SizeFunctionRef a;
+  assert(std::ranges::size(a) == 42);
+
+  const SizeFunctionConstRef b;
+  assert(std::ranges::size(b) == 42);
+
+  assert(std::ranges::size(SizeFunctionSigned()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(SizeFunctionSigned())), long);
+
+  return true;
+}
+
+struct Empty { };
+static_assert(!std::is_invocable_v<RangeSizeT, Empty>);
+
+struct InvalidReturnTypeMember {
+  Empty size();
+};
+
+struct InvalidReturnTypeFunction {
+  friend Empty size(InvalidReturnTypeFunction);
+};
+
+struct Convertible {
+  operator size_t();
+};
+
+struct ConvertibleReturnTypeMember {
+  Convertible size();
+};
+
+struct ConvertibleReturnTypeFunction {
+  friend Convertible size(ConvertibleReturnTypeFunction);
+};
+
+struct BoolReturnTypeMember {
+  bool size() const;
+};
+
+struct BoolReturnTypeFunction {
+  friend bool size(BoolReturnTypeFunction const&);
+};
+
+static_assert(!std::is_invocable_v<RangeSizeT, InvalidReturnTypeMember>);
+static_assert(!std::is_invocable_v<RangeSizeT, InvalidReturnTypeFunction>);
+static_assert( std::is_invocable_v<RangeSizeT, InvalidReturnTypeMember (&)[4]>);
+static_assert( std::is_invocable_v<RangeSizeT, InvalidReturnTypeFunction (&)[4]>);
+static_assert(!std::is_invocable_v<RangeSizeT, ConvertibleReturnTypeMember>);
+static_assert(!std::is_invocable_v<RangeSizeT, ConvertibleReturnTypeFunction>);
+static_assert(!std::is_invocable_v<RangeSizeT, BoolReturnTypeMember const&>);
+static_assert(!std::is_invocable_v<RangeSizeT, BoolReturnTypeFunction const&>);
+
+struct SizeMemberDisabled {
+  size_t size() { return 42; }
+};
+
+template <>
+inline constexpr bool std::ranges::disable_sized_range<SizeMemberDisabled> = true;
+
+struct ImproperlyDisabledMember {
+  size_t size() const { return 42; }
+};
+
+// Intentionally disabling "const ConstSizeMemberDisabled". This doesn't disable anything
+// because T is always uncvrefed before being checked.
+template <>
+inline constexpr bool std::ranges::disable_sized_range<const ImproperlyDisabledMember> = true;
+
+struct SizeFunctionDisabled {
+  friend size_t size(SizeFunctionDisabled) { return 42; }
+};
+
+template <>
+inline constexpr bool std::ranges::disable_sized_range<SizeFunctionDisabled> = true;
+
+struct ImproperlyDisabledFunction {
+  friend size_t size(ImproperlyDisabledFunction const&) { return 42; }
+};
+
+template <>
+inline constexpr bool std::ranges::disable_sized_range<const ImproperlyDisabledFunction> = true;
+
+static_assert( std::is_invocable_v<RangeSizeT, ImproperlyDisabledMember&>);
+static_assert( std::is_invocable_v<RangeSizeT, const ImproperlyDisabledMember&>);
+static_assert(!std::is_invocable_v<RangeSizeT, ImproperlyDisabledFunction&>);
+static_assert( std::is_invocable_v<RangeSizeT, const ImproperlyDisabledFunction&>);
+
+// No begin end.
+struct HasMinusOperator {
+  friend constexpr size_t operator-(HasMinusOperator, HasMinusOperator) { return 2; }
+};
+static_assert(!std::is_invocable_v<RangeSizeT, HasMinusOperator>);
+
+struct HasMinusBeginEnd {
+  struct sentinel {
+    friend bool operator==(sentinel, forward_iterator<int*>);
+    friend constexpr std::ptrdiff_t operator-(const sentinel, const forward_iterator<int*>) { return 2; }
+    friend constexpr std::ptrdiff_t operator-(const forward_iterator<int*>, const sentinel) { return 2; }
+  };
+
+  friend constexpr forward_iterator<int*> begin(HasMinusBeginEnd) { return {}; }
+  friend constexpr sentinel end(HasMinusBeginEnd) { return {}; }
+};
+
+struct other_forward_iterator : forward_iterator<int*> { };
+
+struct InvalidMinusBeginEnd {
+  struct sentinel {
+    friend bool operator==(sentinel, other_forward_iterator);
+    friend constexpr std::ptrdiff_t operator-(const sentinel, const other_forward_iterator) { return 2; }
+    friend constexpr std::ptrdiff_t operator-(const other_forward_iterator, const sentinel) { return 2; }
+  };
+
+  friend constexpr other_forward_iterator begin(InvalidMinusBeginEnd) { return {}; }
+  friend constexpr sentinel end(InvalidMinusBeginEnd) { return {}; }
+};
+
+// short is integer-like, but it is not other_forward_iterator's difference_type.
+static_assert(!std::same_as<other_forward_iterator::difference_type, short>);
+static_assert(!std::is_invocable_v<RangeSizeT, InvalidMinusBeginEnd>);
+
+struct RandomAccessRange {
+  struct sentinel {
+    friend bool operator==(sentinel, random_access_iterator<int*>);
+    friend constexpr std::ptrdiff_t operator-(const sentinel, const random_access_iterator<int*>) { return 2; }
+    friend constexpr std::ptrdiff_t operator-(const random_access_iterator<int*>, const sentinel) { return 2; }
+  };
+
+  constexpr random_access_iterator<int*> begin() { return {}; }
+  constexpr sentinel end() { return {}; }
+};
+
+struct IntPtrBeginAndEnd {
+  int buff[8];
+  constexpr int* begin() { return buff; }
+  constexpr int* end() { return buff + 8; }
+};
+
+struct DisabledSizeRangeWithBeginEnd {
+  int buff[8];
+  constexpr int* begin() { return buff; }
+  constexpr int* end() { return buff + 8; }
+  constexpr size_t size() { return 1; }
+};
+
+template <>
+inline constexpr bool std::ranges::disable_sized_range<DisabledSizeRangeWithBeginEnd> = true;
+
+struct SizeBeginAndEndMembers {
+  int buff[8];
+  constexpr int* begin() { return buff; }
+  constexpr int* end() { return buff + 8; }
+  constexpr size_t size() { return 1; }
+};
+
+constexpr bool testRanges() {
+  HasMinusBeginEnd a;
+  assert(std::ranges::size(a) == 2);
+  // Ensure that this is converted to an *unsigned* type.
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(a)), size_t);
+
+  IntPtrBeginAndEnd b;
+  assert(std::ranges::size(b) == 8);
+
+  DisabledSizeRangeWithBeginEnd c;
+  assert(std::ranges::size(c) == 8);
+
+  RandomAccessRange d;
+  assert(std::ranges::size(d) == 2);
+  ASSERT_SAME_TYPE(decltype(std::ranges::size(d)), size_t);
+
+  SizeBeginAndEndMembers e;
+  assert(std::ranges::size(e) == 1);
+
+  return true;
+}
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeSizeT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeSizeT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  testArrayType();
+  static_assert(testArrayType());
+
+  testHasSizeMember();
+  static_assert(testHasSizeMember());
+
+  testHasSizeFunction();
+  static_assert(testHasSizeFunction());
+
+  testRanges();
+  static_assert(testRanges());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/size.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/size.verify.cpp
new file mode 100644
index 0000000..2ee2c1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/size.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::size
+
+#include <ranges>
+
+extern int arr[];
+
+// Verify that for an array of unknown bound `ranges::size` is ill-formed.
+void test() {
+  std::ranges::size(arr);
+  // expected-error-re@-1 {{{{no matching function for call to object of type 'const (std::ranges::)?__size::__fn'}}}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/ssize.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/ssize.pass.cpp
new file mode 100644
index 0000000..be35fe2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/ssize.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::ssize
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using RangeSSizeT = decltype(std::ranges::ssize);
+
+static_assert(!std::is_invocable_v<RangeSSizeT, int[]>);
+static_assert( std::is_invocable_v<RangeSSizeT, int[1]>);
+static_assert( std::is_invocable_v<RangeSSizeT, int (&&)[1]>);
+static_assert( std::is_invocable_v<RangeSSizeT, int (&)[1]>);
+
+struct SizeMember {
+  constexpr size_t size() { return 42; }
+};
+static_assert(!std::is_invocable_v<decltype(std::ranges::ssize), const SizeMember&>);
+
+struct SizeFunction {
+  friend constexpr size_t size(SizeFunction) { return 42; }
+};
+
+struct SizeFunctionSigned {
+  friend constexpr std::ptrdiff_t size(SizeFunctionSigned) { return 42; }
+};
+
+struct SizedSentinelRange {
+  int data_[2] = {};
+  constexpr int *begin() { return data_; }
+  constexpr auto end() { return sized_sentinel<int*>(data_ + 2); }
+};
+
+struct ShortUnsignedReturnType {
+  constexpr unsigned short size() { return 42; }
+};
+
+// size_t changes depending on the platform.
+using SignedSizeT = std::make_signed_t<size_t>;
+
+constexpr bool test() {
+  int a[4];
+
+  assert(std::ranges::ssize(a) == 4);
+  ASSERT_SAME_TYPE(decltype(std::ranges::ssize(a)), SignedSizeT);
+
+  assert(std::ranges::ssize(SizeMember()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::ssize(SizeMember())), SignedSizeT);
+
+  assert(std::ranges::ssize(SizeFunction()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::ssize(SizeFunction())), SignedSizeT);
+
+  assert(std::ranges::ssize(SizeFunctionSigned()) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::ssize(SizeFunctionSigned())), std::ptrdiff_t);
+
+  SizedSentinelRange b;
+  assert(std::ranges::ssize(b) == 2);
+  ASSERT_SAME_TYPE(decltype(std::ranges::ssize(b)), std::ptrdiff_t);
+
+  // This gets converted to ptrdiff_t because it's wider.
+  ShortUnsignedReturnType c;
+  assert(std::ranges::ssize(c) == 42);
+  ASSERT_SAME_TYPE(decltype(std::ranges::ssize(c)), ptrdiff_t);
+
+  return true;
+}
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::is_invocable_v<RangeSSizeT, Holder<Incomplete>*>);
+static_assert(!std::is_invocable_v<RangeSSizeT, Holder<Incomplete>*&>);
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.access/ssize.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.access/ssize.verify.cpp
new file mode 100644
index 0000000..9885d82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.access/ssize.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::size
+
+#include <ranges>
+
+extern int arr[];
+
+// Verify that for an array of unknown bound `ranges::ssize` is ill-formed.
+void test() {
+  std::ranges::ssize(arr);
+  // expected-error-re@-1 {{{{no matching function for call to object of type 'const (std::ranges::)?__ssize::__fn'}}}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/all.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/all.pass.cpp
new file mode 100644
index 0000000..d90a25d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/all.pass.cpp
@@ -0,0 +1,208 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::all;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int globalBuff[8];
+
+template<bool IsNoexcept>
+struct View : std::ranges::view_base {
+  int start_ = 0;
+  explicit View() noexcept(IsNoexcept) = default;
+  constexpr explicit View(int start) : start_(start) {}
+  View(View&&) noexcept(IsNoexcept) = default;
+  View& operator=(View&&) noexcept(IsNoexcept) = default;
+  constexpr int* begin() const { return globalBuff + start_; }
+  constexpr int* end() const { return globalBuff + 8; }
+};
+static_assert(std::ranges::view<View<true>>);
+static_assert(std::ranges::view<View<false>>);
+
+template<bool IsNoexcept>
+struct CopyableView : std::ranges::view_base {
+  int start_ = 0;
+  explicit CopyableView() noexcept(IsNoexcept) = default;
+  CopyableView(CopyableView const&) noexcept(IsNoexcept) = default;
+  CopyableView& operator=(CopyableView const&) noexcept(IsNoexcept) = default;
+  constexpr explicit CopyableView(int start) noexcept : start_(start) {}
+  constexpr int* begin() const { return globalBuff + start_; }
+  constexpr int* end() const { return globalBuff + 8; }
+};
+static_assert(std::ranges::view<CopyableView<true>>);
+static_assert(std::ranges::view<CopyableView<false>>);
+
+struct MoveOnlyView : std::ranges::view_base{
+  MoveOnlyView() = default;
+  MoveOnlyView(const MoveOnlyView&) = delete;
+  MoveOnlyView& operator=(const MoveOnlyView&) = delete;
+  MoveOnlyView(MoveOnlyView&&) = default;
+  MoveOnlyView& operator=(MoveOnlyView&&) = default;
+
+  int* begin() const;
+  int* end() const;
+};
+
+struct Range {
+  int start_;
+  constexpr explicit Range(int start) noexcept : start_(start) {}
+  constexpr int* begin() const { return globalBuff + start_; }
+  constexpr int* end() const { return globalBuff + 8; }
+};
+
+struct BorrowableRange {
+  int start_;
+  constexpr explicit BorrowableRange(int start) noexcept : start_(start) {}
+  constexpr int* begin() const { return globalBuff + start_; }
+  constexpr int* end() const { return globalBuff + 8; }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowableRange> = true;
+
+struct RandomAccessRange {
+  constexpr auto begin() { return random_access_iterator<int*>(globalBuff); }
+  constexpr auto end() { return sized_sentinel(random_access_iterator<int*>(globalBuff + 8)); }
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<RandomAccessRange> = true;
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+constexpr bool test() {
+  {
+    ASSERT_SAME_TYPE(decltype(std::views::all(View<true>())), View<true>);
+    static_assert(noexcept(std::views::all(View<true>())));
+    static_assert(!noexcept(std::views::all(View<false>())));
+
+    auto viewCopy = std::views::all(View<true>(2));
+    ASSERT_SAME_TYPE(decltype(viewCopy), View<true>);
+    assert(std::ranges::begin(viewCopy) == globalBuff + 2);
+    assert(std::ranges::end(viewCopy) == globalBuff + 8);
+  }
+
+  {
+    ASSERT_SAME_TYPE(decltype(std::views::all(std::declval<const CopyableView<true>&>())), CopyableView<true>);
+    static_assert(noexcept(std::views::all(CopyableView<true>())));
+    static_assert(!noexcept(std::views::all(CopyableView<false>())));
+
+    CopyableView<true> view(2);
+    auto viewCopy = std::views::all(view);
+    ASSERT_SAME_TYPE(decltype(viewCopy), CopyableView<true>);
+    assert(std::ranges::begin(viewCopy) == globalBuff + 2);
+    assert(std::ranges::end(viewCopy) == globalBuff + 8);
+  }
+
+  {
+    Range range(2);
+    auto ref = std::views::all(range);
+    ASSERT_SAME_TYPE(decltype(ref), std::ranges::ref_view<Range>);
+    assert(std::ranges::begin(ref) == globalBuff + 2);
+    assert(std::ranges::end(ref) == globalBuff + 8);
+
+    auto own = std::views::all(std::move(range));
+    ASSERT_SAME_TYPE(decltype(own), std::ranges::owning_view<Range>);
+    assert(std::ranges::begin(own) == globalBuff + 2);
+    assert(std::ranges::end(own) == globalBuff + 8);
+
+    auto cref = std::views::all(std::as_const(range));
+    ASSERT_SAME_TYPE(decltype(cref), std::ranges::ref_view<const Range>);
+    assert(std::ranges::begin(cref) == globalBuff + 2);
+    assert(std::ranges::end(cref) == globalBuff + 8);
+
+    static_assert(!std::is_invocable_v<decltype(std::views::all), const Range&&>);
+  }
+
+  {
+    auto own = std::views::all(BorrowableRange(2));
+    ASSERT_SAME_TYPE(decltype(own), std::ranges::owning_view<BorrowableRange>);
+    assert(std::ranges::begin(own) == globalBuff + 2);
+    assert(std::ranges::end(own) == globalBuff + 8);
+  }
+
+  {
+    auto own = std::views::all(RandomAccessRange());
+    ASSERT_SAME_TYPE(decltype(own), std::ranges::owning_view<RandomAccessRange>);
+    assert(base(std::ranges::begin(own)) == globalBuff);
+    assert(base(base(std::ranges::end(own))) == globalBuff + 8);
+  }
+
+  // Check SFINAE friendliness of the call operator
+  {
+    static_assert(!std::is_invocable_v<decltype(std::views::all)>);
+    static_assert(!std::is_invocable_v<decltype(std::views::all), RandomAccessRange, RandomAccessRange>);
+
+    // `views::all(v)` is expression equivalent to `decay-copy(v)` if the decayed type
+    // of `v` models `view`. If `v` is an lvalue-reference to a move-only view, the
+    // expression should be ill-formed because `v` is not copyable
+    static_assert(!std::is_invocable_v<decltype(std::views::all), MoveOnlyView&>);
+  }
+
+  // Test that std::views::all is a range adaptor
+  {
+    // Test `v | views::all`
+    {
+      Range range(0);
+      auto result = range | std::views::all;
+      ASSERT_SAME_TYPE(decltype(result), std::ranges::ref_view<Range>);
+      assert(&result.base() == &range);
+    }
+
+    // Test `adaptor | views::all`
+    {
+      Range range(0);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::transform(f) | std::views::all;
+      using Result = std::ranges::transform_view<std::ranges::ref_view<Range>, decltype(f)>;
+      std::same_as<Result> auto result = partial(range);
+      assert(&result.base().base() == &range);
+    }
+
+    // Test `views::all | adaptor`
+    {
+      Range range(0);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::all | std::views::transform(f);
+      using Result = std::ranges::transform_view<std::ranges::ref_view<Range>, decltype(f)>;
+      std::same_as<Result> auto result = partial(range);
+      assert(&result.base().base() == &range);
+    }
+
+    {
+      struct NotAView { };
+      static_assert( CanBePiped<Range&,    decltype(std::views::all)>);
+      static_assert(!CanBePiped<NotAView,  decltype(std::views::all)>);
+    }
+  }
+
+  {
+    static_assert(std::same_as<decltype(std::views::all), decltype(std::ranges::views::all)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/all_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/all_t.compile.pass.cpp
new file mode 100644
index 0000000..7034676
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/all_t.compile.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<viewable_range R>
+// using all_t = decltype(views::all(declval<R>()));
+
+#include <ranges>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+struct BorrowableRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowableRange> = true;
+
+template <class T>
+concept HasAllT = requires {
+    typename std::views::all_t<T>;
+};
+
+// When T is a view, returns decay-copy(T)
+ASSERT_SAME_TYPE(std::views::all_t<View>, View);
+ASSERT_SAME_TYPE(std::views::all_t<View&>, View);
+ASSERT_SAME_TYPE(std::views::all_t<View&&>, View);
+ASSERT_SAME_TYPE(std::views::all_t<const View>, View);
+ASSERT_SAME_TYPE(std::views::all_t<const View&>, View);
+ASSERT_SAME_TYPE(std::views::all_t<const View&&>, View);
+
+// Otherwise, when T is a reference to a range, returns ref_view<T>
+ASSERT_SAME_TYPE(std::views::all_t<Range&>, std::ranges::ref_view<Range>);
+ASSERT_SAME_TYPE(std::views::all_t<const Range&>, std::ranges::ref_view<const Range>);
+ASSERT_SAME_TYPE(std::views::all_t<BorrowableRange&>, std::ranges::ref_view<BorrowableRange>);
+ASSERT_SAME_TYPE(std::views::all_t<const BorrowableRange&>, std::ranges::ref_view<const BorrowableRange>);
+
+// Otherwise, returns owning_view<T>
+ASSERT_SAME_TYPE(std::views::all_t<Range>, std::ranges::owning_view<Range>);
+ASSERT_SAME_TYPE(std::views::all_t<Range&&>, std::ranges::owning_view<Range>);
+static_assert(!HasAllT<const Range>);
+static_assert(!HasAllT<const Range&&>);
+ASSERT_SAME_TYPE(std::views::all_t<BorrowableRange>, std::ranges::owning_view<BorrowableRange>);
+ASSERT_SAME_TYPE(std::views::all_t<BorrowableRange&&>, std::ranges::owning_view<BorrowableRange>);
+static_assert(!HasAllT<const BorrowableRange>);
+static_assert(!HasAllT<const BorrowableRange&&>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/base.pass.cpp
new file mode 100644
index 0000000..06d3543
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/base.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr R& base() & noexcept { return r_; }
+// constexpr const R& base() const& noexcept { return r_; }
+// constexpr R&& base() && noexcept { return std::move(r_); }
+// constexpr const R&& base() const&& noexcept { return std::move(r_); }
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+#include "test_macros.h"
+
+struct Base {
+  int *begin() const;
+  int *end() const;
+};
+
+constexpr bool test()
+{
+  using OwningView = std::ranges::owning_view<Base>;
+  OwningView ov;
+  decltype(auto) b1 = static_cast<OwningView&>(ov).base();
+  decltype(auto) b2 = static_cast<OwningView&&>(ov).base();
+  decltype(auto) b3 = static_cast<const OwningView&>(ov).base();
+  decltype(auto) b4 = static_cast<const OwningView&&>(ov).base();
+
+  ASSERT_SAME_TYPE(decltype(b1), Base&);
+  ASSERT_SAME_TYPE(decltype(b2), Base&&);
+  ASSERT_SAME_TYPE(decltype(b3), const Base&);
+  ASSERT_SAME_TYPE(decltype(b4), const Base&&);
+
+  assert(&b1 == &b2);
+  assert(&b1 == &b3);
+  assert(&b1 == &b4);
+
+  ASSERT_NOEXCEPT(static_cast<OwningView&>(ov).base());
+  ASSERT_NOEXCEPT(static_cast<OwningView&&>(ov).base());
+  ASSERT_NOEXCEPT(static_cast<const OwningView&>(ov).base());
+  ASSERT_NOEXCEPT(static_cast<const OwningView&&>(ov).base());
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/begin_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/begin_end.pass.cpp
new file mode 100644
index 0000000..155f880
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/begin_end.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+
+// constexpr iterator_t<R> begin();
+// constexpr sentinel_t<R> end();
+// constexpr auto begin() const requires range<const R>;
+// constexpr auto end() const requires range<const R>;
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+struct Base {
+  constexpr int *begin() { return nullptr; }
+  constexpr auto end() { return sentinel_wrapper<int*>(nullptr); }
+  constexpr char *begin() const { return nullptr; }
+  constexpr auto end() const { return sentinel_wrapper<char*>(nullptr); }
+};
+static_assert(std::same_as<std::ranges::iterator_t<Base>, int*>);
+static_assert(std::same_as<std::ranges::sentinel_t<Base>, sentinel_wrapper<int*>>);
+static_assert(std::same_as<std::ranges::iterator_t<const Base>, char*>);
+static_assert(std::same_as<std::ranges::sentinel_t<const Base>, sentinel_wrapper<char*>>);
+
+struct NoConst {
+  int* begin();
+  sentinel_wrapper<int*> end();
+};
+
+struct DecayChecker {
+  int*& begin() const;
+  int*& end() const;
+};
+
+template <class T>
+concept HasBegin = requires (T t) {
+  t.begin();
+};
+
+template <class T>
+concept HasEnd = requires (T t) {
+  t.end();
+};
+
+constexpr bool test()
+{
+  {
+    using OwningView = std::ranges::owning_view<Base>;
+    OwningView ov;
+    std::same_as<int*> decltype(auto) b1 = static_cast<OwningView&>(ov).begin();
+    std::same_as<int*> decltype(auto) b2 = static_cast<OwningView&&>(ov).begin();
+    std::same_as<char*> decltype(auto) b3 = static_cast<const OwningView&>(ov).begin();
+    std::same_as<char*> decltype(auto) b4 = static_cast<const OwningView&&>(ov).begin();
+
+    std::same_as<sentinel_wrapper<int*>> decltype(auto) e1 = static_cast<OwningView&>(ov).end();
+    std::same_as<sentinel_wrapper<int*>> decltype(auto) e2 = static_cast<OwningView&&>(ov).end();
+    std::same_as<sentinel_wrapper<char*>> decltype(auto) e3 = static_cast<const OwningView&>(ov).end();
+    std::same_as<sentinel_wrapper<char*>> decltype(auto) e4 = static_cast<const OwningView&&>(ov).end();
+
+    assert(b1 == e1);
+    assert(b2 == e2);
+    assert(b3 == e3);
+    assert(b4 == e4);
+  }
+  {
+    // NoConst has non-const begin() and end(); so does the owning_view.
+    using OwningView = std::ranges::owning_view<NoConst>;
+    static_assert(HasBegin<OwningView&>);
+    static_assert(HasBegin<OwningView&&>);
+    static_assert(!HasBegin<const OwningView&>);
+    static_assert(!HasBegin<const OwningView&&>);
+    static_assert(HasEnd<OwningView&>);
+    static_assert(HasEnd<OwningView&&>);
+    static_assert(!HasEnd<const OwningView&>);
+    static_assert(!HasEnd<const OwningView&&>);
+  }
+  {
+    // DecayChecker's begin() and end() return references; make sure the owning_view decays them.
+    using OwningView = std::ranges::owning_view<DecayChecker>;
+    OwningView ov;
+    ASSERT_SAME_TYPE(decltype(ov.begin()), int*);
+    ASSERT_SAME_TYPE(decltype(ov.end()), int*);
+  }
+  {
+    // Test an empty view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a));
+    assert(ov.begin() == a);
+    assert(std::as_const(ov).begin() == a);
+    assert(ov.end() == a);
+    assert(std::as_const(ov).end() == a);
+  }
+  {
+    // Test a non-empty view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a+1));
+    assert(ov.begin() == a);
+    assert(std::as_const(ov).begin() == a);
+    assert(ov.end() == a+1);
+    assert(std::as_const(ov).end() == a+1);
+  }
+  {
+    // Test a non-view.
+    std::array<int, 2> a = {1, 2};
+    auto ov = std::ranges::owning_view(std::move(a));
+    assert(std::to_address(ov.begin()) != std::to_address(a.begin())); // because it points into the copy
+    assert(std::to_address(std::as_const(ov).begin()) != std::to_address(a.begin()));
+    assert(std::to_address(ov.end()) != std::to_address(a.end()));
+    assert(std::to_address(std::as_const(ov).end()) != std::to_address(a.end()));
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..4f51e90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/borrowing.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   inline constexpr bool enable_borrowed_range<owning_view<T>> = enable_borrowed_range<T>;
+
+#include <ranges>
+
+#include "test_range.h"
+
+static_assert( std::ranges::borrowed_range<std::ranges::owning_view<BorrowedView>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::owning_view<NonBorrowedView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/constructor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/constructor.pass.cpp
new file mode 100644
index 0000000..f492c0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/constructor.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// owning_view() requires default_initializable<R> = default;
+// constexpr owning_view(R&& t);
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct DefaultConstructible {
+  int i;
+  constexpr explicit DefaultConstructible(int j = 42) : i(j) {}
+  int *begin() const;
+  int *end() const;
+};
+
+struct NotDefaultConstructible {
+  int i;
+  constexpr explicit NotDefaultConstructible(int j) : i(j) {}
+  int *begin() const;
+  int *end() const;
+};
+
+struct MoveChecker {
+  int i;
+  constexpr explicit MoveChecker(int j) : i(j) {}
+  constexpr MoveChecker(MoveChecker&& v) : i(std::exchange(v.i, -1)) {}
+  MoveChecker& operator=(MoveChecker&&);
+  int *begin() const;
+  int *end() const;
+};
+
+struct NoexceptChecker {
+  int *begin() const;
+  int *end() const;
+};
+
+constexpr bool test()
+{
+  {
+    using OwningView = std::ranges::owning_view<DefaultConstructible>;
+    static_assert(std::is_constructible_v<OwningView>);
+    static_assert(std::default_initializable<OwningView>);
+    static_assert(std::movable<OwningView>);
+    static_assert(std::is_trivially_move_constructible_v<OwningView>);
+    static_assert(std::is_trivially_move_assignable_v<OwningView>);
+    static_assert(!std::is_copy_constructible_v<OwningView>);
+    static_assert(!std::is_copy_assignable_v<OwningView>);
+    static_assert(!std::is_constructible_v<OwningView, int>);
+    static_assert(!std::is_constructible_v<OwningView, DefaultConstructible&>);
+    static_assert(std::is_constructible_v<OwningView, DefaultConstructible&&>);
+    static_assert(!std::is_convertible_v<int, OwningView>);
+    static_assert(std::is_convertible_v<DefaultConstructible&&, OwningView>);
+    {
+      OwningView ov;
+      assert(ov.base().i == 42);
+    }
+    {
+      OwningView ov = OwningView(DefaultConstructible(1));
+      assert(ov.base().i == 1);
+    }
+  }
+  {
+    using OwningView = std::ranges::owning_view<NotDefaultConstructible>;
+    static_assert(!std::is_constructible_v<OwningView>);
+    static_assert(!std::default_initializable<OwningView>);
+    static_assert(std::movable<OwningView>);
+    static_assert(std::is_trivially_move_constructible_v<OwningView>);
+    static_assert(std::is_trivially_move_assignable_v<OwningView>);
+    static_assert(!std::is_copy_constructible_v<OwningView>);
+    static_assert(!std::is_copy_assignable_v<OwningView>);
+    static_assert(!std::is_constructible_v<OwningView, int>);
+    static_assert(!std::is_constructible_v<OwningView, NotDefaultConstructible&>);
+    static_assert(std::is_constructible_v<OwningView, NotDefaultConstructible&&>);
+    static_assert(!std::is_convertible_v<int, OwningView>);
+    static_assert(std::is_convertible_v<NotDefaultConstructible&&, OwningView>);
+    {
+      OwningView ov = OwningView(NotDefaultConstructible(1));
+      assert(ov.base().i == 1);
+    }
+  }
+  {
+    using OwningView = std::ranges::owning_view<MoveChecker>;
+    static_assert(!std::is_constructible_v<OwningView>);
+    static_assert(!std::default_initializable<OwningView>);
+    static_assert(std::movable<OwningView>);
+    static_assert(!std::is_trivially_move_constructible_v<OwningView>);
+    static_assert(!std::is_trivially_move_assignable_v<OwningView>);
+    static_assert(!std::is_copy_constructible_v<OwningView>);
+    static_assert(!std::is_copy_assignable_v<OwningView>);
+    static_assert(!std::is_constructible_v<OwningView, int>);
+    static_assert(!std::is_constructible_v<OwningView, MoveChecker&>);
+    static_assert(std::is_constructible_v<OwningView, MoveChecker&&>);
+    static_assert(!std::is_convertible_v<int, OwningView>);
+    static_assert(std::is_convertible_v<MoveChecker&&, OwningView>);
+    {
+      // Check that the constructor does indeed move from the target object.
+      auto m = MoveChecker(42);
+      OwningView ov = OwningView(std::move(m));
+      assert(ov.base().i == 42);
+      assert(m.i == -1);
+    }
+  }
+  {
+    // Check that the defaulted constructors are (not) noexcept when appropriate.
+
+    static_assert( std::is_nothrow_constructible_v<NoexceptChecker>); // therefore,
+    static_assert( std::is_nothrow_constructible_v<std::ranges::owning_view<NoexceptChecker>>);
+    static_assert(!std::is_nothrow_constructible_v<DefaultConstructible>); // therefore,
+    static_assert(!std::is_nothrow_constructible_v<std::ranges::owning_view<DefaultConstructible>>);
+
+    static_assert( std::is_nothrow_move_constructible_v<NoexceptChecker>); // therefore,
+    static_assert( std::is_nothrow_move_constructible_v<std::ranges::owning_view<NoexceptChecker>>);
+    static_assert(!std::is_nothrow_move_constructible_v<MoveChecker>); // therefore,
+    static_assert(!std::is_nothrow_move_constructible_v<std::ranges::owning_view<MoveChecker>>);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/data.pass.cpp
new file mode 100644
index 0000000..568371d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/data.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto data() requires contiguous_range<R>
+// constexpr auto data() const requires contiguous_range<const R>
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class T>
+concept HasData = requires (T t) {
+  t.data();
+};
+
+constexpr bool test()
+{
+  {
+    struct ContiguousIters {
+      contiguous_iterator<int*> begin();
+      sentinel_wrapper<contiguous_iterator<int*>> end();
+    };
+    using OwningView = std::ranges::owning_view<ContiguousIters>;
+    static_assert(std::ranges::contiguous_range<OwningView&>);
+    static_assert(!std::ranges::range<const OwningView&>); // no begin/end
+    static_assert(HasData<OwningView&>);
+    static_assert(HasData<OwningView&&>);
+    static_assert(!HasData<const OwningView&>);
+    static_assert(!HasData<const OwningView&&>);
+  }
+  {
+    struct NoData {
+      random_access_iterator<int*> begin();
+      random_access_iterator<int*> end();
+    };
+    using OwningView = std::ranges::owning_view<NoData>;
+    static_assert(!HasData<OwningView&>);
+    static_assert(!HasData<OwningView&&>);
+    static_assert(!HasData<const OwningView&>);
+    static_assert(!HasData<const OwningView&&>);
+  }
+  {
+    // Test a view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a+1));
+    assert(ov.data() == a);
+    assert(std::as_const(ov).data() == a);
+  }
+  {
+    // Test a non-view.
+    std::array<int, 2> a = {1, 2};
+    auto ov = std::ranges::owning_view(std::move(a));
+    assert(ov.data() != a.data()); // because it points into the copy
+    assert(std::as_const(ov).data() != a.data());
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/empty.pass.cpp
new file mode 100644
index 0000000..349233f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/empty.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr bool empty() requires requires { ranges::empty(r_); }
+// constexpr bool empty() const requires requires { ranges::empty(r_); }
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class T>
+concept HasEmpty = requires (T t) {
+  t.empty();
+};
+
+constexpr bool test()
+{
+  {
+    struct ComparableIters {
+      forward_iterator<int*> begin();
+      forward_iterator<int*> end();
+    };
+    using OwningView = std::ranges::owning_view<ComparableIters>;
+    static_assert(HasEmpty<OwningView&>);
+    static_assert(HasEmpty<OwningView&&>);
+    static_assert(!HasEmpty<const OwningView&>);
+    static_assert(!HasEmpty<const OwningView&&>);
+  }
+  {
+    struct NoEmpty {
+      cpp20_input_iterator<int*> begin();
+      sentinel_wrapper<cpp20_input_iterator<int*>> end();
+    };
+    static_assert(std::ranges::range<NoEmpty&>);
+    static_assert(!std::invocable<decltype(std::ranges::empty), NoEmpty&>);
+    static_assert(!std::ranges::range<const NoEmpty&>); // no begin/end
+    static_assert(!std::invocable<decltype(std::ranges::empty), const NoEmpty&>);
+    using OwningView = std::ranges::owning_view<NoEmpty>;
+    static_assert(!HasEmpty<OwningView&>);
+    static_assert(!HasEmpty<OwningView&&>);
+    static_assert(!HasEmpty<const OwningView&>);
+    static_assert(!HasEmpty<const OwningView&&>);
+  }
+  {
+    struct EmptyMember {
+      cpp20_input_iterator<int*> begin();
+      sentinel_wrapper<cpp20_input_iterator<int*>> end();
+      bool empty() const;
+    };
+    static_assert(std::ranges::range<EmptyMember&>);
+    static_assert(std::invocable<decltype(std::ranges::empty), EmptyMember&>);
+    static_assert(!std::ranges::range<const EmptyMember&>); // no begin/end
+    static_assert(std::invocable<decltype(std::ranges::empty), const EmptyMember&>);
+    using OwningView = std::ranges::owning_view<EmptyMember>;
+    static_assert(std::ranges::range<OwningView&>);
+    static_assert(!std::ranges::range<const OwningView&>); // no begin/end
+    static_assert(HasEmpty<OwningView&>);
+    static_assert(HasEmpty<OwningView&&>);
+    static_assert(HasEmpty<const OwningView&>); // but it still has empty()
+    static_assert(HasEmpty<const OwningView&&>);
+  }
+  {
+    // Test an empty view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a));
+    assert(ov.empty());
+    assert(std::as_const(ov).empty());
+  }
+  {
+    // Test a non-empty view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a+1));
+    assert(!ov.empty());
+    assert(!std::as_const(ov).empty());
+  }
+  {
+    // Test a non-view.
+    std::array<int, 2> a = {1, 2};
+    auto ov = std::ranges::owning_view(std::move(a));
+    assert(!ov.empty());
+    assert(!std::as_const(ov).empty());
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..11b3dc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/implicit_ctad.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// owning_view
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <ranges>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Range {
+  int* begin();
+  int* end();
+};
+
+int main(int, char**) {
+  Range r;
+  std::ranges::owning_view view{std::move(r)};
+  ASSERT_SAME_TYPE(decltype(view), std::ranges::owning_view<Range>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/size.pass.cpp
new file mode 100644
index 0000000..20f3eaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.owning.view/size.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() requires sized_range<R>
+// constexpr auto size() const requires sized_range<const R>
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class T>
+concept HasSize = requires (T t) {
+  t.size();
+};
+
+constexpr bool test()
+{
+  {
+    struct SubtractableIters {
+      forward_iterator<int*> begin();
+      sized_sentinel<forward_iterator<int*>> end();
+    };
+    using OwningView = std::ranges::owning_view<SubtractableIters>;
+    static_assert(std::ranges::sized_range<OwningView&>);
+    static_assert(!std::ranges::range<const OwningView&>); // no begin/end
+    static_assert(HasSize<OwningView&>);
+    static_assert(HasSize<OwningView&&>);
+    static_assert(!HasSize<const OwningView&>);
+    static_assert(!HasSize<const OwningView&&>);
+  }
+  {
+    struct NoSize {
+      bidirectional_iterator<int*> begin();
+      bidirectional_iterator<int*> end();
+    };
+    using OwningView = std::ranges::owning_view<NoSize>;
+    static_assert(!HasSize<OwningView&>);
+    static_assert(!HasSize<OwningView&&>);
+    static_assert(!HasSize<const OwningView&>);
+    static_assert(!HasSize<const OwningView&&>);
+  }
+  {
+    struct SizeMember {
+      bidirectional_iterator<int*> begin();
+      bidirectional_iterator<int*> end();
+      int size() const;
+    };
+    using OwningView = std::ranges::owning_view<SizeMember>;
+    static_assert(std::ranges::sized_range<OwningView&>);
+    static_assert(!std::ranges::range<const OwningView&>); // no begin/end
+    static_assert(HasSize<OwningView&>);
+    static_assert(HasSize<OwningView&&>);
+    static_assert(!HasSize<const OwningView&>); // not a range, therefore no size()
+    static_assert(!HasSize<const OwningView&&>);
+  }
+  {
+    // Test an empty view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a));
+    assert(ov.size() == 0);
+    assert(std::as_const(ov).size() == 0);
+  }
+  {
+    // Test a non-empty view.
+    int a[] = {1};
+    auto ov = std::ranges::owning_view(std::ranges::subrange(a, a+1));
+    assert(ov.size() == 1);
+    assert(std::as_const(ov).size() == 1);
+  }
+  {
+    // Test a non-view.
+    std::array<int, 2> a = {1, 2};
+    auto ov = std::ranges::owning_view(std::move(a));
+    assert(ov.size() == 2);
+    assert(std::as_const(ov).size() == 2);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.ref.view/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.ref.view/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..4405742
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.ref.view/borrowing.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   inline constexpr bool enable_borrowed_range<ref_view<T>> = true;
+
+#include <ranges>
+
+#include "test_range.h"
+
+static_assert(std::ranges::borrowed_range<std::ranges::ref_view<BorrowedRange>>);
+static_assert(std::ranges::borrowed_range<std::ranges::ref_view<BorrowedView>>);
+static_assert(std::ranges::borrowed_range<std::ranges::ref_view<NonBorrowedView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.ref.view/range.ref.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.ref.view/range.ref.view.pass.cpp
new file mode 100644
index 0000000..88e7179
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.all/range.ref.view/range.ref.view.pass.cpp
@@ -0,0 +1,208 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<range R>
+//  requires is_object_v<R>
+// class ref_view;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int globalBuff[8];
+
+template<class T>
+concept ValidRefView = requires { typename std::ranges::ref_view<T>; };
+
+struct Range {
+  int start = 0;
+  friend constexpr int* begin(Range const& range) { return globalBuff + range.start; }
+  friend constexpr int* end(Range const&) { return globalBuff + 8; }
+  friend constexpr int* begin(Range& range) { return globalBuff + range.start; }
+  friend constexpr int* end(Range&) { return globalBuff + 8; }
+};
+
+struct BeginOnly {
+  friend int* begin(BeginOnly const&);
+  friend int* begin(BeginOnly &);
+};
+
+static_assert( ValidRefView<Range>);
+static_assert(!ValidRefView<BeginOnly>);
+static_assert(!ValidRefView<int (&)[4]>);
+static_assert( ValidRefView<int[4]>);
+
+static_assert(std::derived_from<std::ranges::ref_view<Range>, std::ranges::view_interface<std::ranges::ref_view<Range>>>);
+
+struct RangeConvertible {
+  operator Range& ();
+};
+
+struct RValueRangeConvertible {
+  operator Range&& ();
+};
+
+static_assert( std::is_constructible_v<std::ranges::ref_view<Range>, Range&>);
+static_assert( std::is_constructible_v<std::ranges::ref_view<Range>, RangeConvertible>);
+static_assert(!std::is_constructible_v<std::ranges::ref_view<Range>, RValueRangeConvertible>);
+
+struct ConstConvertibleToLValueAndRValue {
+  operator Range& () const;
+  operator Range&& () const;
+};
+static_assert( std::is_convertible_v<RangeConvertible, std::ranges::ref_view<Range>>);
+static_assert(!std::is_convertible_v<RValueRangeConvertible, std::ranges::ref_view<Range>>);
+static_assert(!std::is_convertible_v<ConstConvertibleToLValueAndRValue, std::ranges::ref_view<Range>>);
+
+struct ForwardRange {
+  constexpr forward_iterator<int*> begin() const { return forward_iterator<int*>(globalBuff); }
+  constexpr forward_iterator<int*> end() const { return forward_iterator<int*>(globalBuff + 8); }
+};
+
+struct Cpp17InputRange {
+  struct sentinel {
+    friend constexpr bool operator==(sentinel, cpp17_input_iterator<int*> iter) { return base(iter) == globalBuff + 8; }
+    friend constexpr std::ptrdiff_t operator-(sentinel, cpp17_input_iterator<int*>) { return -8; }
+    friend constexpr std::ptrdiff_t operator-(cpp17_input_iterator<int*>, sentinel) { return 8; }
+  };
+
+  constexpr cpp17_input_iterator<int*> begin() const {
+    return cpp17_input_iterator<int*>(globalBuff);
+  }
+  constexpr sentinel end() const { return {}; }
+};
+
+struct Cpp20InputRange {
+  struct sentinel {
+    friend constexpr bool operator==(sentinel, const cpp20_input_iterator<int*> &iter) { return base(iter) == globalBuff + 8; }
+    friend constexpr std::ptrdiff_t operator-(sentinel, const cpp20_input_iterator<int*>&) { return -8; }
+  };
+
+  constexpr cpp20_input_iterator<int*> begin() const {
+    return cpp20_input_iterator<int*>(globalBuff);
+  }
+  constexpr sentinel end() const { return {}; }
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<Cpp20InputRange> = true;
+
+template<class R>
+concept EmptyIsInvocable = requires (std::ranges::ref_view<R> view) { view.empty(); };
+
+template<class R>
+concept SizeIsInvocable = requires (std::ranges::ref_view<R> view) { view.size(); };
+
+template<class R>
+concept DataIsInvocable = requires (std::ranges::ref_view<R> view) { view.data(); };
+
+// Testing ctad.
+static_assert(std::same_as<decltype(std::ranges::ref_view(std::declval<Range&>())),
+              std::ranges::ref_view<Range>>);
+
+constexpr bool test() {
+  {
+    // ref_view::base
+    Range range;
+    std::ranges::ref_view<Range> view{range};
+    assert(view.begin() == globalBuff);
+    view.base() = Range{2};
+    assert(view.begin() == globalBuff + 2);
+  }
+
+  {
+    // ref_view::begin
+    Range range1;
+    std::ranges::ref_view<Range> view1 = range1;
+    assert(view1.begin() == globalBuff);
+
+    ForwardRange range2;
+    std::ranges::ref_view<ForwardRange> view2 = range2;
+    assert(base(view2.begin()) == globalBuff);
+
+    Cpp17InputRange range3;
+    std::ranges::ref_view<Cpp17InputRange> view3 = range3;
+    assert(base(view3.begin()) == globalBuff);
+
+    Cpp20InputRange range4;
+    std::ranges::ref_view<Cpp20InputRange> view4 = range4;
+    assert(base(view4.begin()) == globalBuff);
+  }
+
+  {
+    // ref_view::end
+    Range range1;
+    std::ranges::ref_view<Range> view1 = range1;
+    assert(view1.end() == globalBuff + 8);
+
+    ForwardRange range2;
+    std::ranges::ref_view<ForwardRange> view2 = range2;
+    assert(base(view2.end()) == globalBuff + 8);
+
+    Cpp17InputRange range3;
+    std::ranges::ref_view<Cpp17InputRange> view3 = range3;
+    assert(view3.end() == cpp17_input_iterator(globalBuff + 8));
+
+    Cpp20InputRange range4;
+    std::ranges::ref_view<Cpp20InputRange> view4 = range4;
+    assert(view4.end() == cpp20_input_iterator(globalBuff + 8));
+  }
+
+  {
+    // ref_view::empty
+    Range range{8};
+    std::ranges::ref_view<Range> view1 = range;
+    assert(view1.empty());
+
+    ForwardRange range2;
+    std::ranges::ref_view<ForwardRange> view2 = range2;
+    assert(!view2.empty());
+
+    static_assert(!EmptyIsInvocable<Cpp17InputRange>);
+    static_assert(!EmptyIsInvocable<Cpp20InputRange>);
+  }
+
+  {
+    // ref_view::size
+    Range range1{8};
+    std::ranges::ref_view<Range> view1 = range1;
+    assert(view1.size() == 0);
+
+    Range range2{2};
+    std::ranges::ref_view<Range> view2 = range2;
+    assert(view2.size() == 6);
+
+    static_assert(!SizeIsInvocable<ForwardRange>);
+  }
+
+  {
+    // ref_view::data
+    Range range1;
+    std::ranges::ref_view<Range> view1 = range1;
+    assert(view1.data() == globalBuff);
+
+    Range range2{2};
+    std::ranges::ref_view<Range> view2 = range2;
+    assert(view2.data() == globalBuff + 2);
+
+    static_assert(!DataIsInvocable<ForwardRange>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/adaptor.pass.cpp
new file mode 100644
index 0000000..dbe1523
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/adaptor.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// std::views::as_rvalue
+
+#include <cassert>
+#include <functional>
+#include <ranges>
+#include <vector>
+
+#include "test_iterators.h"
+
+struct DefaultConstructibleView : std::ranges::view_base {
+  int i_;
+  int* begin();
+  int* end();
+};
+
+struct RValueView : std::ranges::view_base {};
+
+template <class View, class T>
+concept HasPipe = requires(View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct NoView {};
+static_assert(std::is_invocable_v<decltype(std::views::as_rvalue), DefaultConstructibleView>);
+static_assert(!std::is_invocable_v<decltype(std::views::as_rvalue)>);
+static_assert(!std::is_invocable_v<decltype(std::views::as_rvalue), NoView>);
+static_assert(HasPipe<DefaultConstructibleView&, decltype(std::views::as_rvalue)>);
+static_assert(HasPipe<int (&)[10], decltype(std::views::as_rvalue)>);
+static_assert(!HasPipe<int (&&)[10], decltype(std::views::as_rvalue)>);
+static_assert(!HasPipe<NoView, decltype(std::views::as_rvalue)>);
+static_assert(std::is_same_v<decltype(std::views::as_rvalue), decltype(std::ranges::views::as_rvalue)>);
+
+struct move_iterator_range {
+  constexpr std::move_iterator<int*> begin() const { return {}; }
+  constexpr std::move_iterator<int*> end() const { return {}; }
+};
+
+static_assert(!std::ranges::view<move_iterator_range>);
+static_assert(std::ranges::range<move_iterator_range>);
+
+constexpr bool test() {
+  { // view | views::as_rvalue
+    DefaultConstructibleView v{{}, 3};
+    std::same_as<std::ranges::as_rvalue_view<DefaultConstructibleView>> decltype(auto) view = v | std::views::as_rvalue;
+    assert(view.base().i_ == 3);
+  }
+
+  { // adaptor | views::as_rvalue
+    DefaultConstructibleView v{{}, 3};
+    const auto partial = std::views::transform(std::identity{}) | std::views::as_rvalue;
+    std::same_as<std::ranges::as_rvalue_view<
+        std::ranges::transform_view<DefaultConstructibleView, std::identity>>> decltype(auto) view = partial(v);
+    assert(view.base().base().i_ == 3);
+  }
+
+  { // views::as_rvalue | adaptor
+    DefaultConstructibleView v{{}, 3};
+    const auto partial = std::views::as_rvalue | std::views::transform(std::identity{});
+    std::same_as<std::ranges::transform_view<std::ranges::as_rvalue_view<DefaultConstructibleView>,
+                                             std::identity>> decltype(auto) view = partial(v);
+    assert(view.base().base().i_ == 3);
+  }
+
+  { // rvalue-view | views::as_rvalue
+    int a[4] = {1, 2, 3, 4};
+    std::ranges::subrange range(rvalue_iterator{a}, rvalue_iterator{a + 4});
+    [[maybe_unused]] std::same_as<std::ranges::subrange<rvalue_iterator<int>>> decltype(auto) rval_range =
+        range | std::views::as_rvalue;
+  }
+
+  { // range | views::as_rvalue
+    [[maybe_unused]] std::same_as<std::ranges::as_rvalue_view<std::views::all_t<std::vector<int>>>> decltype(auto)
+        view = std::vector<int>{} | std::views::as_rvalue;
+  }
+
+  { // rvalue-range | views::as_rvalue
+    [[maybe_unused]] std::same_as<std::views::all_t<move_iterator_range>> decltype(auto) view =
+        move_iterator_range{} | std::views::as_rvalue;
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/base.pass.cpp
new file mode 100644
index 0000000..ac08f75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/base.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr V base() const & requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct SimpleView : std::ranges::view_base {
+  int i;
+  int* begin() const;
+  int* end() const;
+};
+
+struct MoveOnlyView : SimpleView {
+  MoveOnly m;
+};
+
+template <class T>
+concept HasBase = requires(T&& t) { std::forward<T>(t).base(); };
+
+static_assert(HasBase<std::ranges::as_rvalue_view<SimpleView> const&>);
+static_assert(HasBase<std::ranges::as_rvalue_view<SimpleView>&&>);
+
+static_assert(!HasBase<std::ranges::as_rvalue_view<MoveOnlyView> const&>);
+static_assert(HasBase<std::ranges::as_rvalue_view<MoveOnlyView>&&>);
+
+constexpr bool test() {
+  { // const &
+    const std::ranges::as_rvalue_view<SimpleView> view(SimpleView{{}, 5});
+    std::same_as<SimpleView> decltype(auto) v = view.base();
+    assert(v.i == 5);
+  }
+
+  { // &
+    std::ranges::as_rvalue_view<SimpleView> view(SimpleView{{}, 5});
+    std::same_as<SimpleView> decltype(auto) v = view.base();
+    assert(v.i == 5);
+  }
+
+  { // &&
+    std::ranges::as_rvalue_view<SimpleView> view(SimpleView{{}, 5});
+    std::same_as<SimpleView> decltype(auto) v = std::move(view).base();
+    assert(v.i == 5);
+  }
+
+  { // const &&
+    const std::ranges::as_rvalue_view<SimpleView> view(SimpleView{{}, 5});
+    std::same_as<SimpleView> decltype(auto) v = std::move(view).base();
+    assert(v.i == 5);
+  }
+
+  { // move only
+    std::ranges::as_rvalue_view<MoveOnlyView> view(MoveOnlyView{{}, 5});
+    std::same_as<MoveOnlyView> decltype(auto) v = std::move(view).base();
+    assert(v.m.get() == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/begin.pass.cpp
new file mode 100644
index 0000000..684cdd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/begin.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr auto begin()
+// constexpr auto begin() const
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <ranges>
+
+#include "test_iterators.h"
+
+struct SimpleView : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+struct NonSimpleView : std::ranges::view_base {
+  char* begin();
+  char* end();
+  int* begin() const;
+  int* end() const;
+};
+
+struct NonConstView : std::ranges::view_base {
+  char* begin();
+  char* end();
+};
+
+template <class T>
+concept HasBegin = requires(T t) { t.begin(); };
+
+static_assert(HasBegin<std::ranges::as_rvalue_view<SimpleView>>);
+static_assert(HasBegin<const std::ranges::as_rvalue_view<SimpleView>>);
+static_assert(HasBegin<std::ranges::as_rvalue_view<NonSimpleView>>);
+static_assert(HasBegin<const std::ranges::as_rvalue_view<NonSimpleView>>);
+static_assert(HasBegin<std::ranges::as_rvalue_view<NonConstView>>);
+static_assert(!HasBegin<const std::ranges::as_rvalue_view<NonConstView>>);
+
+template <class Iter, class Sent>
+constexpr void test_range() {
+  int a[] = {1, 2};
+  std::ranges::subrange range(Iter(std::begin(a)), Sent(Iter(std::end(a))));
+  std::ranges::as_rvalue_view view(std::move(range));
+  std::same_as<std::move_iterator<Iter>> decltype(auto) iter = view.begin();
+  assert(base(iter.base()) == std::begin(a));
+}
+
+template <class Iter, class Sent>
+class WrapRange {
+  Iter iter_;
+  Sent sent_;
+
+public:
+  constexpr WrapRange(Iter iter, Sent sent) : iter_(std::move(iter)), sent_(std::move(sent)) {}
+
+  constexpr Iter begin() const { return iter_; }
+  constexpr Sent end() const { return sent_; }
+};
+
+template <class Iter, class Sent>
+WrapRange(Iter, Sent) -> WrapRange<Iter, Sent>;
+
+template <class Iter, class Sent>
+constexpr void test_const_range() {
+  int a[]    = {1, 2};
+  auto range = WrapRange{Iter(a), Sent(Iter(a + 2))};
+  const std::ranges::as_rvalue_view view(std::views::all(range));
+  std::same_as<std::move_iterator<Iter>> decltype(auto) iter = view.begin();
+  assert(base(iter.base()) == std::begin(a));
+}
+
+struct move_iterator_view : std::ranges::view_base {
+  constexpr std::move_iterator<int*> begin() const { return {}; }
+  constexpr std::move_iterator<int*> end() const { return {}; }
+};
+
+constexpr bool test() {
+  meta::for_each(meta::cpp20_input_iterator_list<int*>{}, []<class Iter> {
+    if constexpr (std::sentinel_for<Iter, Iter>)
+      test_range<Iter, Iter>();
+    test_range<Iter, sentinel_wrapper<Iter>>();
+    test_range<Iter, sized_sentinel<Iter>>();
+  });
+
+  meta::for_each(meta::forward_iterator_list<const int*>{}, []<class Iter> {
+    test_const_range<Iter, Iter>();
+    test_const_range<Iter, sentinel_wrapper<Iter>>();
+    test_const_range<Iter, sized_sentinel<Iter>>();
+  });
+
+  { // check that with a std::move_iterator begin() doesn't return move_iterator<move_iterator<T>>
+    std::ranges::as_rvalue_view view{move_iterator_view{}};
+    std::same_as<std::move_iterator<int*>> decltype(auto) it = view.begin();
+    assert(it == std::move_iterator<int*>{});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/ctad.compile.pass.cpp
new file mode 100644
index 0000000..5149b71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/ctad.compile.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <ranges>
+#include <vector>
+#include <utility>
+
+static_assert(std::is_same_v<decltype(std::ranges::as_rvalue_view(std::vector<int>{})),
+                             std::ranges::as_rvalue_view<std::views::all_t<std::vector<int>>>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::as_rvalue_view(std::declval<std::vector<int>&>())),
+                             std::ranges::as_rvalue_view<std::views::all_t<std::vector<int>&>>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::as_rvalue_view(std::ranges::empty_view<int>{})),
+                             std::ranges::as_rvalue_view<std::ranges::empty_view<int>>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/ctor.pass.cpp
new file mode 100644
index 0000000..4832139
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/ctor.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// std::ranges::as_rvalue_view::as_rvalue_view(...)
+
+#include <cassert>
+#include <ranges>
+#include <vector>
+
+struct DefaultConstructibleView : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+
+  int i_ = 23;
+};
+
+struct NonDefaultConstructibleView : std::ranges::view_base {
+  NonDefaultConstructibleView(int i) : i_(i) {}
+
+  int* begin() const;
+  int* end() const;
+
+  int i_ = 23;
+};
+
+static_assert(!std::is_constructible_v<std::ranges::as_rvalue_view<NonDefaultConstructibleView>>);
+static_assert(std::is_constructible_v<std::ranges::as_rvalue_view<NonDefaultConstructibleView>, int>);
+static_assert(std::is_nothrow_constructible_v<std::ranges::as_rvalue_view<DefaultConstructibleView>>);
+
+template <class T, class... Args>
+concept IsImplicitlyConstructible = requires(T val, Args... args) { val = {std::forward<Args>(args)...}; };
+
+static_assert(IsImplicitlyConstructible<std::ranges::as_rvalue_view<DefaultConstructibleView>>);
+static_assert(!IsImplicitlyConstructible<std::ranges::as_rvalue_view<NonDefaultConstructibleView>, int>);
+
+constexpr bool test() {
+  std::ranges::as_rvalue_view<DefaultConstructibleView> view = {};
+  assert(view.base().i_ == 23);
+
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(test());
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/enable_borrowed_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/enable_borrowed_range.compile.pass.cpp
new file mode 100644
index 0000000..48d1d96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/enable_borrowed_range.compile.pass.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <ranges>
+#include <vector>
+
+static_assert(std::ranges::enable_borrowed_range<std::ranges::as_rvalue_view<std::ranges::empty_view<int>>>);
+static_assert(std::ranges::enable_borrowed_range<std::ranges::as_rvalue_view<std::views::all_t<std::vector<int>&>>>);
+static_assert(!std::ranges::enable_borrowed_range<std::ranges::as_rvalue_view<std::views::all_t<std::vector<int>>>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/end.pass.cpp
new file mode 100644
index 0000000..eb79e14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/end.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr auto end()
+// constexpr auto end() const
+
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "test_iterators.h"
+
+struct DefaultConstructibleView : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+struct CVCallView : std::ranges::view_base {
+  mutable bool const_called = false;
+  mutable int i[1];
+  constexpr int* begin() {
+    const_called = false;
+    return i;
+  }
+
+  constexpr int* begin() const {
+    const_called = true;
+    return i;
+  }
+
+  constexpr int* end() {
+    const_called = false;
+    return i + 1;
+  }
+
+  constexpr int* end() const {
+    const_called = true;
+    return i + 1;
+  }
+};
+
+struct NonConstCommonRange : std::ranges::view_base {
+  int* begin();
+  int* end();
+
+  int* begin() const;
+  sentinel_wrapper<int*> end() const;
+};
+
+struct NonConstView : std::ranges::view_base {
+  int* begin();
+  int* end();
+};
+
+template <class T>
+concept HasEnd = requires(T t) { t.end(); };
+
+static_assert(HasEnd<std::ranges::as_rvalue_view<DefaultConstructibleView>>);
+static_assert(HasEnd<const std::ranges::as_rvalue_view<DefaultConstructibleView>>);
+static_assert(HasEnd<std::ranges::as_rvalue_view<NonConstView>>);
+static_assert(!HasEnd<const std::ranges::as_rvalue_view<NonConstView>>);
+
+static_assert(std::is_same_v<decltype(std::declval<std::ranges::as_rvalue_view<DefaultConstructibleView>>().end()),
+                             std::move_iterator<int*>>);
+static_assert(std::is_same_v<decltype(std::declval<const std::ranges::as_rvalue_view<NonConstCommonRange>>().end()),
+                             std::move_sentinel<sentinel_wrapper<int*>>>);
+
+template <class Iter, class Sent, bool is_common>
+constexpr void test_range() {
+  using Expected = std::conditional_t<is_common, std::move_iterator<Sent>, std::move_sentinel<Sent>>;
+  int a[]        = {1, 2};
+  std::ranges::subrange range(Iter(std::begin(a)), Sent(Iter(std::end(a))));
+  std::ranges::as_rvalue_view view(std::move(range));
+  std::same_as<Expected> decltype(auto) iter = view.end();
+  assert(base(base(iter.base())) == std::end(a));
+}
+
+template <class Iter, class Sent>
+class WrapRange {
+  Iter iter_;
+  Sent sent_;
+
+public:
+  constexpr WrapRange(Iter iter, Sent sent) : iter_(std::move(iter)), sent_(std::move(sent)) {}
+
+  constexpr Iter begin() const { return iter_; }
+  constexpr Sent end() const { return sent_; }
+};
+
+template <class Iter, class Sent>
+WrapRange(Iter, Sent) -> WrapRange<Iter, Sent>;
+
+template <class Iter, class Sent, bool is_common>
+constexpr void test_const_range() {
+  using Expected = std::conditional_t<is_common, std::move_iterator<Sent>, std::move_sentinel<Sent>>;
+  int a[]        = {1, 2};
+  auto range = WrapRange{Iter(a), Sent(Iter(a + 2))};
+  const std::ranges::as_rvalue_view view(std::move(range));
+  std::same_as<Expected> decltype(auto) iter = view.end();
+  assert(base(base(iter.base())) == std::end(a));
+}
+
+struct move_iterator_view : std::ranges::view_base {
+  constexpr std::move_iterator<int*> begin() const { return {}; }
+  constexpr std::move_iterator<int*> end() const { return {}; }
+};
+
+constexpr bool test() {
+  test_range<cpp17_input_iterator<int*>, sentinel_wrapper<cpp17_input_iterator<int*>>, false>();
+  test_range<cpp17_input_iterator<int*>, sized_sentinel<cpp17_input_iterator<int*>>, false>();
+  test_range<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>, false>();
+  test_range<cpp20_input_iterator<int*>, sized_sentinel<cpp20_input_iterator<int*>>, false>();
+
+  meta::for_each(meta::forward_iterator_list<int*>{}, []<class Iter> {
+    test_range<Iter, Iter, true>();
+    test_range<Iter, sentinel_wrapper<Iter>, false>();
+    test_range<Iter, sized_sentinel<Iter>, false>();
+  });
+
+  {
+    std::ranges::as_rvalue_view view(CVCallView{});
+    (void)view.end();
+    assert(view.base().const_called);
+  }
+
+  { // check that with a std::move_iterator begin() doesn't return move_iterator<move_iterator<T>>
+    std::ranges::as_rvalue_view view{move_iterator_view{}};
+    std::same_as<std::move_iterator<int*>> decltype(auto) it = view.end();
+    assert(it == std::move_iterator<int*>{});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/size.pass.cpp
new file mode 100644
index 0000000..f330b41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.as.rvalue/size.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// constexpr auto size()
+// constexpr auto size() const
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <cstddef>
+#include <ranges>
+
+struct ConstSizedView : std::ranges::view_base {
+  bool* size_called;
+  int* begin() const;
+  int* end() const;
+
+  constexpr size_t size() const {
+    *size_called = true;
+    return 3;
+  }
+};
+
+struct SizedView : std::ranges::view_base {
+  bool* size_called;
+  int* begin() const;
+  int* end() const;
+
+  constexpr int size() {
+    *size_called = true;
+    return 5;
+  }
+};
+
+struct UnsizedView : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+template <class T>
+concept HasSize = requires(T v) { v.size(); };
+
+static_assert(HasSize<ConstSizedView>);
+static_assert(HasSize<const ConstSizedView>);
+static_assert(HasSize<SizedView>);
+static_assert(!HasSize<const SizedView>);
+static_assert(!HasSize<UnsizedView>);
+static_assert(!HasSize<const UnsizedView>);
+
+constexpr bool test() {
+  {
+    bool size_called = false;
+    std::ranges::as_rvalue_view view(ConstSizedView{{}, &size_called});
+    std::same_as<size_t> auto size = view.size();
+    assert(size == 3);
+    assert(size_called);
+  }
+
+  {
+    bool size_called = false;
+    std::ranges::as_rvalue_view view(SizedView{{}, &size_called});
+    std::same_as<int> auto size = view.size();
+    assert(size == 5);
+    assert(size_called);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/adaptor.pass.cpp
new file mode 100644
index 0000000..143f7df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/adaptor.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::common
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+#include "types.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+constexpr bool test() {
+  int buf[] = {1, 2, 3};
+
+  // views::common(r) is equivalent to views::all(r) if r is a common_range
+  {
+    {
+      CommonView view(buf, buf + 3);
+      std::same_as<CommonView> auto result = std::views::common(view);
+      assert(result.begin_ == buf);
+      assert(result.end_ == buf + 3);
+    }
+    {
+      using NotAView = std::array<int, 3>;
+      NotAView arr = {1, 2, 3};
+      std::same_as<std::ranges::ref_view<NotAView>> auto result = std::views::common(arr);
+      assert(result.begin() == arr.begin());
+      assert(result.end() == arr.end());
+    }
+  }
+
+  // Otherwise, views::common(r) is equivalent to ranges::common_view{r}
+  {
+    NonCommonView view(buf, buf + 3);
+    std::same_as<std::ranges::common_view<NonCommonView>> auto result = std::views::common(view);
+    assert(result.base().begin_ == buf);
+    assert(result.base().end_ == buf + 3);
+  }
+
+  // Test that std::views::common is a range adaptor
+  {
+    using SomeView = NonCommonView;
+
+    // Test `v | views::common`
+    {
+      SomeView view(buf, buf + 3);
+      std::same_as<std::ranges::common_view<SomeView>> auto result = view | std::views::common;
+      assert(result.base().begin_ == buf);
+      assert(result.base().end_ == buf + 3);
+    }
+
+    // Test `adaptor | views::common`
+    {
+      SomeView view(buf, buf + 3);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::transform(f) | std::views::common;
+      using Result = std::ranges::common_view<std::ranges::transform_view<SomeView, decltype(f)>>;
+      std::same_as<Result> auto result = partial(view);
+      assert(result.base().base().begin_ == buf);
+      assert(result.base().base().end_ == buf + 3);
+    }
+
+    // Test `views::common | adaptor`
+    {
+      SomeView view(buf, buf + 3);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::common | std::views::transform(f);
+      using Result = std::ranges::transform_view<std::ranges::common_view<SomeView>, decltype(f)>;
+      std::same_as<Result> auto result = partial(view);
+      assert(result.base().base().begin_ == buf);
+      assert(result.base().base().end_ == buf + 3);
+    }
+
+    // Check SFINAE friendliness
+    {
+      struct NotAView { };
+      static_assert(!std::is_invocable_v<decltype(std::views::common)>);
+      static_assert(!std::is_invocable_v<decltype(std::views::common), NotAView>);
+      static_assert( CanBePiped<SomeView&,   decltype(std::views::common)>);
+      static_assert( CanBePiped<int(&)[10],  decltype(std::views::common)>);
+      static_assert(!CanBePiped<int(&&)[10], decltype(std::views::common)>);
+      static_assert(!CanBePiped<NotAView,    decltype(std::views::common)>);
+    }
+  }
+
+  {
+    static_assert(std::same_as<decltype(std::views::common), decltype(std::ranges::views::common)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/base.pass.cpp
new file mode 100644
index 0000000..1a0a5ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/base.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const& requires copy_constructible<V>;
+// constexpr V base() &&;
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool hasLValueQualifiedBase(auto&& view) {
+  return requires { view.base(); };
+}
+
+constexpr bool test() {
+  int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    CopyableView view{buf, buf + 8};
+    std::ranges::common_view<CopyableView> common(view);
+    assert(common.base().begin_ == buf);
+    assert(std::move(common).base().begin_ == buf);
+
+    ASSERT_SAME_TYPE(decltype(common.base()), CopyableView);
+    ASSERT_SAME_TYPE(decltype(std::move(common).base()), CopyableView);
+    static_assert(hasLValueQualifiedBase(common));
+  }
+
+  {
+    MoveOnlyView view{buf, buf + 8};
+    std::ranges::common_view<MoveOnlyView> common(std::move(view));
+    assert(std::move(common).base().begin_ == buf);
+
+    ASSERT_SAME_TYPE(decltype(std::move(common).base()), MoveOnlyView);
+    static_assert(!hasLValueQualifiedBase(common));
+  }
+
+  {
+    CopyableView view{buf, buf + 8};
+    const std::ranges::common_view<CopyableView> common(view);
+    assert(common.base().begin_ == buf);
+    assert(std::move(common).base().begin_ == buf);
+
+    ASSERT_SAME_TYPE(decltype(common.base()), CopyableView);
+    ASSERT_SAME_TYPE(decltype(std::move(common).base()), CopyableView);
+    static_assert(hasLValueQualifiedBase(common));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/begin.pass.cpp
new file mode 100644
index 0000000..96116dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/begin.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin();
+// constexpr auto begin() const requires range<const V>;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+#include "types.h"
+
+struct MutableView : std::ranges::view_base {
+  int* begin();
+  sentinel_wrapper<int*> end();
+};
+
+template<class View>
+concept BeginEnabled = requires(View v) { v.begin(); };
+
+constexpr bool test() {
+  int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert( BeginEnabled<std::ranges::common_view<CopyableView> const&>);
+    static_assert( BeginEnabled<std::ranges::common_view<MutableView>&>);
+    static_assert(!BeginEnabled<std::ranges::common_view<MutableView> const&>);
+  }
+
+  {
+    SizedRandomAccessView view{buf, buf + 8};
+    std::ranges::common_view<SizedRandomAccessView> common(view);
+    std::same_as<RandomAccessIter> auto begin = common.begin();
+    assert(begin == std::ranges::begin(view));
+  }
+
+  {
+    SizedRandomAccessView view{buf, buf + 8};
+    std::ranges::common_view<SizedRandomAccessView> const common(view);
+    std::same_as<RandomAccessIter> auto begin = common.begin();
+    assert(begin == std::ranges::begin(view));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  // The non-constexpr tests:
+  int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    SizedForwardView view{buf, buf + 8};
+    std::ranges::common_view<SizedForwardView> common(view);
+    using CommonIter = std::common_iterator<ForwardIter, sized_sentinel<ForwardIter>>;
+    std::same_as<CommonIter> auto begin = common.begin();
+    assert(begin == std::ranges::begin(view));
+    std::same_as<CommonIter> auto cbegin = std::as_const(common).begin();
+    assert(cbegin == std::ranges::begin(view));
+  }
+
+  {
+    MoveOnlyView view{buf, buf + 8};
+    std::ranges::common_view<MoveOnlyView> common(std::move(view));
+    using CommonIter = std::common_iterator<int*, sentinel_wrapper<int*>>;
+    std::same_as<CommonIter> auto begin = common.begin();
+    assert(begin == std::ranges::begin(view));
+  }
+
+  {
+    CopyableView view{buf, buf + 8};
+    std::ranges::common_view<CopyableView> const common(view);
+    using CommonIter = std::common_iterator<int*, sentinel_wrapper<int*>>;
+    std::same_as<CommonIter> auto begin = common.begin();
+    assert(begin == std::ranges::begin(view));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..1e781b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/borrowing.compile.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   inline constexpr bool enable_borrowed_range<common_view<T>> = enable_borrowed_range<T>;
+
+#include <ranges>
+
+// common_view can only wrap Ts that are `view<T> && !common_range<T>`, so we need to invent one.
+struct Uncommon : std::ranges::view_base {
+    int *begin() const;
+    std::unreachable_sentinel_t end() const;
+};
+
+static_assert(!std::ranges::borrowed_range<std::ranges::common_view<Uncommon>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::common_view<std::ranges::owning_view<Uncommon>>>);
+static_assert( std::ranges::borrowed_range<std::ranges::common_view<std::ranges::ref_view<Uncommon>>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctad.compile.pass.cpp
new file mode 100644
index 0000000..8e48626
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctad.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+//   common_view(R&&) -> common_view<views::all_t<R>>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int *begin() const;
+  sentinel_wrapper<int*> end() const;
+};
+
+struct Range {
+  int *begin() const;
+  sentinel_wrapper<int*> end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  sentinel_wrapper<int*> end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+void testCTAD() {
+    View v;
+    Range r;
+    BorrowedRange br;
+
+    static_assert(std::same_as<
+        decltype(std::ranges::common_view(v)),
+        std::ranges::common_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::common_view(std::move(v))),
+        std::ranges::common_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::common_view(r)),
+        std::ranges::common_view<std::ranges::ref_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::common_view(std::move(r))),
+        std::ranges::common_view<std::ranges::owning_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::common_view(br)),
+        std::ranges::common_view<std::ranges::ref_view<BorrowedRange>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::common_view(std::move(br))),
+        std::ranges::common_view<std::ranges::owning_view<BorrowedRange>>
+    >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctor.default.pass.cpp
new file mode 100644
index 0000000..aa01907
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctor.default.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// common_view() requires default_initializable<V> = default;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "types.h"
+
+int main(int, char**) {
+  static_assert(!std::default_initializable<std::ranges::common_view<MoveOnlyView>>);
+  static_assert( std::default_initializable<std::ranges::common_view<DefaultConstructibleView>>);
+
+  std::ranges::common_view<DefaultConstructibleView> common;
+  assert(common.begin() == nullptr);
+  assert(common.end() == nullptr);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctor.view.pass.cpp
new file mode 100644
index 0000000..a109769
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/ctor.view.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit common_view(V r);
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+
+#include "test_iterators.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    MoveOnlyView view{buf, buf + 8};
+    std::ranges::common_view<MoveOnlyView> common(std::move(view));
+    assert(std::move(common).base().begin_ == buf);
+  }
+
+  {
+    CopyableView const view{buf, buf + 8};
+    std::ranges::common_view<CopyableView> const common(view);
+    assert(common.base().begin_ == buf);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  // Can't compare common_iterator inside constexpr
+  {
+    int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    MoveOnlyView view{buf, buf + 8};
+    std::ranges::common_view<MoveOnlyView> const common(std::move(view));
+    assert(common.begin() == buf);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/end.pass.cpp
new file mode 100644
index 0000000..0565ed0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/end.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end();
+// constexpr auto end() const requires range<const V>;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    SizedRandomAccessView view{buf, buf + 8};
+    std::ranges::common_view<SizedRandomAccessView> common(view);
+    std::same_as<RandomAccessIter> auto end = common.end(); // Note this should NOT be the sentinel type.
+    assert(base(end) == buf + 8);
+  }
+
+  // const version
+  {
+    SizedRandomAccessView view{buf, buf + 8};
+    std::ranges::common_view<SizedRandomAccessView> const common(view);
+    std::same_as<RandomAccessIter> auto end = common.end(); // Note this should NOT be the sentinel type.
+    assert(base(end) == buf + 8);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  {
+    int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+    using CommonForwardIter = std::common_iterator<ForwardIter, sized_sentinel<ForwardIter>>;
+    using CommonIntIter = std::common_iterator<int*, sentinel_wrapper<int*>>;
+
+    {
+      SizedForwardView view{buf, buf + 8};
+      std::ranges::common_view<SizedForwardView> common(view);
+      std::same_as<CommonForwardIter> auto end = common.end();
+      assert(end == CommonForwardIter(std::ranges::end(view)));
+    }
+    {
+      CopyableView view{buf, buf + 8};
+      std::ranges::common_view<CopyableView> common(view);
+      std::same_as<CommonIntIter> auto end = common.end();
+      assert(end == CommonIntIter(std::ranges::end(view)));
+    }
+
+    // const versions
+    {
+      SizedForwardView view{buf, buf + 8};
+      std::ranges::common_view<SizedForwardView> const common(view);
+      std::same_as<CommonForwardIter> auto end = common.end();
+      assert(end == CommonForwardIter(std::ranges::end(view)));
+    }
+    {
+      CopyableView view{buf, buf + 8};
+      std::ranges::common_view<CopyableView> const common(view);
+      std::same_as<CommonIntIter> auto end = common.end();
+      assert(end == CommonIntIter(std::ranges::end(view)));
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/size.pass.cpp
new file mode 100644
index 0000000..6740e3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/size.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() requires sized_range<V>
+// constexpr auto size() const requires sized_range<const V>
+
+#include <ranges>
+#include <cassert>
+
+#include "test_iterators.h"
+#include "types.h"
+
+template<class View>
+concept SizeEnabled = requires(View v) { v.size(); };
+
+constexpr bool test() {
+  int buf[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert( SizeEnabled<std::ranges::common_view<SizedForwardView> const&>);
+    static_assert(!SizeEnabled<std::ranges::common_view<CopyableView> const&>);
+  }
+
+  {
+    SizedForwardView view{buf, buf + 8};
+    std::ranges::common_view<SizedForwardView> common(view);
+    assert(common.size() == 8);
+  }
+
+  {
+    SizedForwardView view{buf, buf + 8};
+    std::ranges::common_view<SizedForwardView> const common(view);
+    assert(common.size() == 8);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/types.h
new file mode 100644
index 0000000..1835448
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.common.view/types.h
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_COMMON_VIEW_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_COMMON_VIEW_TYPES_H
+
+#include <ranges>
+
+#include "test_iterators.h"
+
+struct DefaultConstructibleView : std::ranges::view_base {
+  int* begin_ = nullptr;
+  int* end_ = nullptr;
+  explicit DefaultConstructibleView() = default;
+  constexpr int *begin() const { return begin_; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(end_); }
+};
+static_assert(std::ranges::view<DefaultConstructibleView>);
+static_assert(std::default_initializable<DefaultConstructibleView>);
+
+struct MoveOnlyView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+  constexpr explicit MoveOnlyView(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr MoveOnlyView(MoveOnlyView&&) = default;
+  constexpr MoveOnlyView& operator=(MoveOnlyView&&) = default;
+  constexpr int *begin() const { return begin_; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(end_); }
+};
+static_assert( std::ranges::view<MoveOnlyView>);
+static_assert( std::ranges::contiguous_range<MoveOnlyView>);
+static_assert(!std::copyable<MoveOnlyView>);
+
+struct CopyableView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+  constexpr explicit CopyableView(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr int *begin() const { return begin_; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(end_); }
+};
+static_assert(std::ranges::view<CopyableView>);
+static_assert(std::copyable<CopyableView>);
+
+using ForwardIter = forward_iterator<int*>;
+struct SizedForwardView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+  constexpr explicit SizedForwardView(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr auto begin() const { return forward_iterator<int*>(begin_); }
+  constexpr auto end() const { return sized_sentinel<forward_iterator<int*>>(forward_iterator<int*>(end_)); }
+};
+static_assert(std::ranges::view<SizedForwardView>);
+static_assert(std::ranges::forward_range<SizedForwardView>);
+static_assert(std::ranges::sized_range<SizedForwardView>);
+
+using RandomAccessIter = random_access_iterator<int*>;
+struct SizedRandomAccessView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+  constexpr explicit SizedRandomAccessView(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr auto begin() const { return random_access_iterator<int*>(begin_); }
+  constexpr auto end() const { return sized_sentinel<random_access_iterator<int*>>(random_access_iterator<int*>(end_)); }
+};
+static_assert(std::ranges::view<SizedRandomAccessView>);
+static_assert(std::ranges::random_access_range<SizedRandomAccessView>);
+static_assert(std::ranges::sized_range<SizedRandomAccessView>);
+
+struct CommonView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+  constexpr explicit CommonView(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr int *begin() const { return begin_; }
+  constexpr int *end() const { return end_; }
+};
+static_assert(std::ranges::view<CommonView>);
+static_assert(std::ranges::common_range<CommonView>);
+
+struct NonCommonView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+  constexpr explicit NonCommonView(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr int *begin() const { return begin_; }
+  constexpr auto end() const { return sentinel_wrapper<int*>(end_); }
+};
+static_assert( std::ranges::view<NonCommonView>);
+static_assert(!std::ranges::common_range<NonCommonView>);
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_COMMON_VIEW_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.counted/counted.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.counted/counted.pass.cpp
new file mode 100644
index 0000000..71014f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.counted/counted.pass.cpp
@@ -0,0 +1,239 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::counted;
+
+#include <ranges>
+#include <cassert>
+#include <concepts>
+#include <cstddef>
+#include <memory>
+#include <span>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct RvalueConvertible {
+  RvalueConvertible(const RvalueConvertible&) = delete;
+  operator int() &&;
+};
+
+struct LvalueConvertible {
+  LvalueConvertible(const LvalueConvertible&) = delete;
+  operator int() &;
+};
+
+struct OnlyExplicitlyConvertible {
+  explicit operator int() const;
+};
+
+template<class... Ts>
+concept CountedInvocable = requires (Ts&&... ts) {
+  std::views::counted(std::forward<Ts>(ts)...);
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert(std::addressof(std::views::counted) == std::addressof(std::ranges::views::counted));
+
+    static_assert( CountedInvocable<int*, size_t>);
+    static_assert(!CountedInvocable<int*, LvalueConvertible>);
+    static_assert( CountedInvocable<int*, LvalueConvertible&>);
+    static_assert( CountedInvocable<int*, RvalueConvertible>);
+    static_assert(!CountedInvocable<int*, RvalueConvertible&>);
+    static_assert(!CountedInvocable<int*, OnlyExplicitlyConvertible>);
+    static_assert(!CountedInvocable<int*, int*>);
+    static_assert(!CountedInvocable<int*>);
+    static_assert(!CountedInvocable<size_t>);
+    static_assert(!CountedInvocable<>);
+  }
+
+  {
+    auto c1 = std::views::counted(buffer, 3);
+    auto c2 = std::views::counted(std::as_const(buffer), 3);
+
+    ASSERT_SAME_TYPE(decltype(c1), std::span<int>);
+    ASSERT_SAME_TYPE(decltype(c2), std::span<const int>);
+
+    assert(c1.data() == buffer && c1.size() == 3);
+    assert(c2.data() == buffer && c2.size() == 3);
+  }
+
+  {
+    auto it = contiguous_iterator<int*>(buffer);
+    auto cit = contiguous_iterator<const int*>(buffer);
+
+    auto c1 = std::views::counted(it, 3);
+    auto c2 = std::views::counted(std::as_const(it), 3);
+    auto c3 = std::views::counted(std::move(it), 3);
+    auto c4 = std::views::counted(contiguous_iterator<int*>(buffer), 3);
+    auto c5 = std::views::counted(cit, 3);
+    auto c6 = std::views::counted(std::as_const(cit), 3);
+    auto c7 = std::views::counted(std::move(cit), 3);
+    auto c8 = std::views::counted(contiguous_iterator<const int*>(buffer), 3);
+
+    ASSERT_SAME_TYPE(decltype(c1), std::span<int>);
+    ASSERT_SAME_TYPE(decltype(c2), std::span<int>);
+    ASSERT_SAME_TYPE(decltype(c3), std::span<int>);
+    ASSERT_SAME_TYPE(decltype(c4), std::span<int>);
+    ASSERT_SAME_TYPE(decltype(c5), std::span<const int>);
+    ASSERT_SAME_TYPE(decltype(c6), std::span<const int>);
+    ASSERT_SAME_TYPE(decltype(c7), std::span<const int>);
+    ASSERT_SAME_TYPE(decltype(c8), std::span<const int>);
+
+    assert(c1.data() == buffer && c1.size() == 3);
+    assert(c2.data() == buffer && c2.size() == 3);
+    assert(c3.data() == buffer && c3.size() == 3);
+    assert(c4.data() == buffer && c4.size() == 3);
+    assert(c5.data() == buffer && c5.size() == 3);
+    assert(c6.data() == buffer && c6.size() == 3);
+    assert(c7.data() == buffer && c7.size() == 3);
+    assert(c8.data() == buffer && c8.size() == 3);
+  }
+
+  {
+    auto it = random_access_iterator<int*>(buffer);
+    auto cit = random_access_iterator<const int*>(buffer);
+
+    auto c1 = std::views::counted(it, 3);
+    auto c2 = std::views::counted(std::as_const(it), 3);
+    auto c3 = std::views::counted(std::move(it), 3);
+    auto c4 = std::views::counted(random_access_iterator<int*>(buffer), 3);
+    auto c5 = std::views::counted(cit, 3);
+    auto c6 = std::views::counted(std::as_const(cit), 3);
+    auto c7 = std::views::counted(std::move(cit), 3);
+    auto c8 = std::views::counted(random_access_iterator<const int*>(buffer), 3);
+
+    ASSERT_SAME_TYPE(decltype(c1), std::ranges::subrange<random_access_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(c2), std::ranges::subrange<random_access_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(c3), std::ranges::subrange<random_access_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(c4), std::ranges::subrange<random_access_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(c5), std::ranges::subrange<random_access_iterator<const int*>>);
+    ASSERT_SAME_TYPE(decltype(c6), std::ranges::subrange<random_access_iterator<const int*>>);
+    ASSERT_SAME_TYPE(decltype(c7), std::ranges::subrange<random_access_iterator<const int*>>);
+    ASSERT_SAME_TYPE(decltype(c8), std::ranges::subrange<random_access_iterator<const int*>>);
+
+    assert(c1.begin() == it && c1.end() == it + 3);
+    assert(c2.begin() == it && c2.end() == it + 3);
+    assert(c3.begin() == it && c3.end() == it + 3);
+    assert(c4.begin() == it && c4.end() == it + 3);
+    assert(c5.begin() == cit && c5.end() == cit + 3);
+    assert(c6.begin() == cit && c6.end() == cit + 3);
+    assert(c7.begin() == cit && c7.end() == cit + 3);
+    assert(c8.begin() == cit && c8.end() == cit + 3);
+  }
+
+  {
+    auto it = bidirectional_iterator<int*>(buffer);
+    auto cit = bidirectional_iterator<const int*>(buffer);
+
+    auto c1 = std::views::counted(it, 3);
+    auto c2 = std::views::counted(std::as_const(it), 3);
+    auto c3 = std::views::counted(std::move(it), 3);
+    auto c4 = std::views::counted(bidirectional_iterator<int*>(buffer), 3);
+    auto c5 = std::views::counted(cit, 3);
+    auto c6 = std::views::counted(std::as_const(cit), 3);
+    auto c7 = std::views::counted(std::move(cit), 3);
+    auto c8 = std::views::counted(bidirectional_iterator<const int*>(buffer), 3);
+
+    using Expected = std::ranges::subrange<std::counted_iterator<decltype(it)>, std::default_sentinel_t>;
+    using ConstExpected = std::ranges::subrange<std::counted_iterator<decltype(cit)>, std::default_sentinel_t>;
+
+    ASSERT_SAME_TYPE(decltype(c1), Expected);
+    ASSERT_SAME_TYPE(decltype(c2), Expected);
+    ASSERT_SAME_TYPE(decltype(c3), Expected);
+    ASSERT_SAME_TYPE(decltype(c4), Expected);
+    ASSERT_SAME_TYPE(decltype(c5), ConstExpected);
+    ASSERT_SAME_TYPE(decltype(c6), ConstExpected);
+    ASSERT_SAME_TYPE(decltype(c7), ConstExpected);
+    ASSERT_SAME_TYPE(decltype(c8), ConstExpected);
+
+    assert(c1.begin().base() == it && c1.size() == 3);
+    assert(c2.begin().base() == it && c2.size() == 3);
+    assert(c3.begin().base() == it && c3.size() == 3);
+    assert(c4.begin().base() == it && c4.size() == 3);
+    assert(c5.begin().base() == cit && c5.size() == 3);
+    assert(c6.begin().base() == cit && c6.size() == 3);
+    assert(c7.begin().base() == cit && c7.size() == 3);
+    assert(c8.begin().base() == cit && c8.size() == 3);
+  }
+
+  {
+    auto it = cpp17_output_iterator<int*>(buffer);
+
+    auto c1 = std::views::counted(it, 3);
+    auto c2 = std::views::counted(std::as_const(it), 3);
+    auto c3 = std::views::counted(std::move(it), 3);
+    auto c4 = std::views::counted(cpp17_output_iterator<int*>(buffer), 3);
+
+    using Expected = std::ranges::subrange<std::counted_iterator<decltype(it)>, std::default_sentinel_t>;
+
+    ASSERT_SAME_TYPE(decltype(c1), Expected);
+    ASSERT_SAME_TYPE(decltype(c2), Expected);
+    ASSERT_SAME_TYPE(decltype(c3), Expected);
+    ASSERT_SAME_TYPE(decltype(c4), Expected);
+
+    assert(base(c1.begin().base()) == buffer && c1.size() == 3);
+    assert(base(c2.begin().base()) == buffer && c2.size() == 3);
+    assert(base(c3.begin().base()) == buffer && c3.size() == 3);
+    assert(base(c4.begin().base()) == buffer && c4.size() == 3);
+  }
+
+  {
+    auto it = cpp17_input_iterator<int*>(buffer);
+
+    auto c1 = std::views::counted(it, 3);
+    auto c2 = std::views::counted(std::as_const(it), 3);
+    auto c3 = std::views::counted(std::move(it), 3);
+    auto c4 = std::views::counted(cpp17_input_iterator<int*>(buffer), 3);
+
+    using Expected = std::ranges::subrange<std::counted_iterator<decltype(it)>, std::default_sentinel_t>;
+
+    ASSERT_SAME_TYPE(decltype(c1), Expected);
+    ASSERT_SAME_TYPE(decltype(c2), Expected);
+    ASSERT_SAME_TYPE(decltype(c3), Expected);
+    ASSERT_SAME_TYPE(decltype(c4), Expected);
+
+    assert(base(c1.begin().base()) == buffer && c1.size() == 3);
+    assert(base(c2.begin().base()) == buffer && c2.size() == 3);
+    assert(base(c3.begin().base()) == buffer && c3.size() == 3);
+    assert(base(c4.begin().base()) == buffer && c4.size() == 3);
+  }
+
+  {
+    auto it = cpp20_input_iterator<int*>(buffer);
+
+    static_assert(!std::copyable<cpp20_input_iterator<int*>>);
+    static_assert(!CountedInvocable<cpp20_input_iterator<int*>&, int>);
+    static_assert(!CountedInvocable<const cpp20_input_iterator<int*>&, int>);
+    auto c3 = std::views::counted(std::move(it), 3);
+    auto c4 = std::views::counted(cpp20_input_iterator<int*>(buffer), 3);
+
+    using Expected = std::ranges::subrange<std::counted_iterator<decltype(it)>, std::default_sentinel_t>;
+
+    ASSERT_SAME_TYPE(decltype(c3), Expected);
+    ASSERT_SAME_TYPE(decltype(c4), Expected);
+
+    assert(base(c3.begin().base()) == buffer && c3.size() == 3);
+    assert(base(c4.begin().base()) == buffer && c4.size() == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/adaptor.pass.cpp
new file mode 100644
index 0000000..409b400
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/adaptor.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::drop_while
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i < 3; }
+};
+
+struct Foo {};
+
+template <class T>
+struct BufferView : std::ranges::view_base {
+  T* buffer_;
+  std::size_t size_;
+
+  template <std::size_t N>
+  constexpr BufferView(T (&b)[N]) : buffer_(b), size_(N) {}
+};
+
+using IntBufferView = BufferView<int>;
+
+struct MoveOnlyView : IntBufferView {
+  using IntBufferView::IntBufferView;
+  MoveOnlyView(const MoveOnlyView&)            = delete;
+  MoveOnlyView& operator=(const MoveOnlyView&) = delete;
+  MoveOnlyView(MoveOnlyView&&)                 = default;
+  MoveOnlyView& operator=(MoveOnlyView&&)      = default;
+  constexpr const int* begin() const { return buffer_; }
+  constexpr const int* end() const { return buffer_ + size_; }
+};
+
+static_assert(!std::is_invocable_v<decltype((std::views::drop_while))>);
+static_assert(std::is_invocable_v<decltype((std::views::drop_while)), int>);
+static_assert(std::is_invocable_v<decltype((std::views::drop_while)), Pred>);
+static_assert(!std::is_invocable_v<decltype((std::views::drop_while)), int, Pred>);
+static_assert(std::is_invocable_v<decltype((std::views::drop_while)), int (&)[2], Pred>);
+static_assert(!std::is_invocable_v<decltype((std::views::drop_while)), Foo (&)[2], Pred>);
+static_assert(std::is_invocable_v<decltype((std::views::drop_while)), MoveOnlyView, Pred>);
+
+template <class View, class T>
+concept CanBePiped =
+    requires(View&& view, T&& t) {
+      { std::forward<View>(view) | std::forward<T>(t) };
+    };
+
+static_assert(!CanBePiped<MoveOnlyView, decltype(std::views::drop_while)>);
+static_assert(CanBePiped<MoveOnlyView, decltype(std::views::drop_while(Pred{}))>);
+static_assert(!CanBePiped<int, decltype(std::views::drop_while(Pred{}))>);
+static_assert(CanBePiped<int (&)[2], decltype(std::views::drop_while(Pred{}))>);
+static_assert(!CanBePiped<Foo (&)[2], decltype(std::views::drop_while(Pred{}))>);
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 3, 2, 1};
+
+  // Test `views::drop_while(p)(v)`
+  {
+    using Result                     = std::ranges::drop_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> auto result = std::views::drop_while(Pred{})(MoveOnlyView{buff});
+    auto expected                    = {3, 4, 3, 2, 1};
+    assert(std::ranges::equal(result, expected));
+  }
+  {
+    auto const partial               = std::views::drop_while(Pred{});
+    using Result                     = std::ranges::drop_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> auto result = partial(MoveOnlyView{buff});
+    auto expected                    = {3, 4, 3, 2, 1};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `v | views::drop_while(p)`
+  {
+    using Result                     = std::ranges::drop_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> auto result = MoveOnlyView{buff} | std::views::drop_while(Pred{});
+    auto expected                    = {3, 4, 3, 2, 1};
+    assert(std::ranges::equal(result, expected));
+  }
+  {
+    auto const partial               = std::views::drop_while(Pred{});
+    using Result                     = std::ranges::drop_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> auto result = MoveOnlyView{buff} | partial;
+    auto expected                    = {3, 4, 3, 2, 1};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `views::drop_while(v, p)`
+  {
+    using Result                     = std::ranges::drop_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> auto result = std::views::drop_while(MoveOnlyView{buff}, Pred{});
+    auto expected                    = {3, 4, 3, 2, 1};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test adaptor | adaptor
+  {
+    struct Pred2 {
+      constexpr bool operator()(int i) const { return i < 4; }
+    };
+    auto const partial = std::views::drop_while(Pred{}) | std::views::drop_while(Pred2{});
+    using Result       = std::ranges::drop_while_view<std::ranges::drop_while_view<MoveOnlyView, Pred>, Pred2>;
+    std::same_as<Result> auto result = MoveOnlyView{buff} | partial;
+    auto expected                    = {4, 3, 2, 1};
+    assert(std::ranges::equal(result, expected));
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/base.pass.cpp
new file mode 100644
index 0000000..7ac5e0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/base.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const & requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct View : std::ranges::view_base {
+  int i;
+  int* begin() const;
+  int* end() const;
+};
+
+struct MoveOnlyView : View {
+  MoveOnly mo;
+};
+
+template <class T>
+concept HasBase = requires(T&& t) { std::forward<T>(t).base(); };
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i > 5; }
+};
+
+static_assert(HasBase<std::ranges::drop_while_view<View, Pred> const&>);
+static_assert(HasBase<std::ranges::drop_while_view<View, Pred>&&>);
+
+static_assert(!HasBase<std::ranges::drop_while_view<MoveOnlyView, Pred> const&>);
+static_assert(HasBase<std::ranges::drop_while_view<MoveOnlyView, Pred>&&>);
+
+constexpr bool test() {
+  // const &
+  {
+    const std::ranges::drop_while_view<View, Pred> dwv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = dwv.base();
+    assert(v.i == 5);
+  }
+
+  // &
+  {
+    std::ranges::drop_while_view<View, Pred> dwv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = dwv.base();
+    assert(v.i == 5);
+  }
+
+  // &&
+  {
+    std::ranges::drop_while_view<View, Pred> dwv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = std::move(dwv).base();
+    assert(v.i == 5);
+  }
+
+  // const &&
+  {
+    const std::ranges::drop_while_view<View, Pred> dwv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = std::move(dwv).base();
+    assert(v.i == 5);
+  }
+
+  // move only
+  {
+    std::ranges::drop_while_view<MoveOnlyView, Pred> dwv{MoveOnlyView{{}, 5}, {}};
+    std::same_as<MoveOnlyView> decltype(auto) v = std::move(dwv).base();
+    assert(v.mo.get() == 5);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/begin.pass.cpp
new file mode 100644
index 0000000..5c8ee52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/begin.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin();
+
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+// Test that begin is not const
+template <class T>
+concept HasBegin = requires(T t) { t.begin(); };
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i < 3; }
+};
+
+static_assert(HasBegin<std::ranges::drop_while_view<View, Pred>>);
+static_assert(!HasBegin<const std::ranges::drop_while_view<View, Pred>>);
+
+constexpr auto always = [](auto v) { return [v](auto&&...) { return v; }; };
+
+template <class Iter>
+constexpr void testOne() {
+  using Sent                   = sentinel_wrapper<Iter>;
+  using Range                  = std::ranges::subrange<Iter, Sent>;
+  constexpr auto make_subrange = []<std::size_t N>(int(&buffer)[N]) {
+    return Range{Iter{buffer}, Sent{Iter{buffer + N}}};
+  };
+
+  // empty
+  {
+    std::array<int, 0> a;
+    Range range{Iter{a.data()}, Sent{Iter{a.data() + a.size()}}};
+    std::ranges::drop_while_view dwv{std::move(range), always(false)};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == a.data() + a.size());
+  }
+
+  // 1 element not dropped
+  {
+    int buffer[] = {1};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), always(false)};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer);
+  }
+
+  // 1 element dropped
+  {
+    int buffer[] = {1};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), always(true)};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer + 1);
+  }
+
+  // multiple elements. no element dropped
+  {
+    int buffer[] = {1, 2, 3, 4, 5};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), always(false)};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer);
+  }
+
+  // multiple elements. all elements dropped
+  {
+    int buffer[] = {1, 2, 3, 4, 5};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), always(true)};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer + 5);
+  }
+
+  // multiple elements. some elements dropped
+  {
+    int buffer[] = {1, 2, 3, 2, 1};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), [](int i) { return i < 3; }};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer + 2);
+  }
+
+  // Make sure we do not make a copy of the predicate when we call begin()
+  {
+    struct TrackingPred {
+      constexpr explicit TrackingPred(bool* moved, bool* copied) : moved_(moved), copied_(copied) {}
+      constexpr TrackingPred(TrackingPred const& other) : moved_(other.moved_), copied_(other.copied_) {
+        *copied_ = true;
+      }
+      constexpr TrackingPred(TrackingPred&& other) : moved_(other.moved_), copied_(other.copied_) { *moved_ = true; }
+      TrackingPred& operator=(TrackingPred const&) = default;
+      TrackingPred& operator=(TrackingPred&&)      = default;
+
+      constexpr bool operator()(int i) const { return i < 3; }
+      bool* moved_;
+      bool* copied_;
+    };
+
+    int buffer[] = {1, 2, 3, 2, 1};
+    bool moved = false, copied = false;
+    auto range = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), TrackingPred(&moved, &copied)};
+    moved                    = false;
+    copied                   = false;
+    [[maybe_unused]] auto it = dwv.begin();
+    assert(!moved);
+    assert(!copied);
+  }
+
+  // Test with a non-const predicate
+  {
+    int buffer[] = {1, 2, 3, 2, 1};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), [](int i) mutable { return i < 3; }};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer + 2);
+  }
+
+  // Test with a predicate that takes by non-const reference
+  {
+    int buffer[] = {1, 2, 3, 2, 1};
+    auto range   = make_subrange(buffer);
+    std::ranges::drop_while_view dwv{std::move(range), [](int& i) { return i < 3; }};
+    std::same_as<Iter> decltype(auto) it = dwv.begin();
+    assert(base(it) == buffer + 2);
+  }
+
+  if constexpr (std::forward_iterator<Iter>) {
+    // Make sure that we cache the result of begin() on subsequent calls
+    {
+      int buffer[] = {1, 2, 3, 2, 1};
+      auto range   = make_subrange(buffer);
+
+      int called = 0;
+      auto pred  = [&](int i) {
+        ++called;
+        return i < 3;
+      };
+      std::ranges::drop_while_view dwv{range, pred};
+      for (auto i = 0; i < 10; ++i) {
+        std::same_as<Iter> decltype(auto) it = dwv.begin();
+        assert(base(it) == buffer + 2);
+        assert(called == 3);
+      }
+    }
+  }
+}
+
+constexpr bool test() {
+  testOne<cpp17_input_iterator<int*>>();
+  testOne<cpp20_input_iterator<int*>>();
+  testOne<forward_iterator<int*>>();
+  testOne<bidirectional_iterator<int*>>();
+  testOne<random_access_iterator<int*>>();
+  testOne<contiguous_iterator<int*>>();
+  testOne<int*>();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/borrowed.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/borrowed.compile.pass.cpp
new file mode 100644
index 0000000..9956fd0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/borrowed.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+//
+// template<class T, class Pred>
+//   inline constexpr bool enable_borrowed_range<drop_while_view<T, Pred>> =
+//     enable_borrowed_range<T>;
+
+#include <ranges>
+
+struct NonBorrowed : std::ranges::view_base {
+  int* begin();
+  int* end();
+};
+
+struct Borrowed : std::ranges::view_base {
+  int* begin();
+  int* end();
+};
+
+struct Pred {
+  bool operator()(int) const;
+};
+
+template <>
+inline constexpr bool std::ranges::enable_borrowed_range<Borrowed> = true;
+
+static_assert(!std::ranges::borrowed_range<std::ranges::drop_while_view<NonBorrowed, Pred>>);
+static_assert(std::ranges::borrowed_range<std::ranges::drop_while_view<Borrowed, Pred>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctad.compile.pass.cpp
new file mode 100644
index 0000000..d148fd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctad.compile.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//   template<class R, class Pred>
+//     drop_while_view(R&&, Pred) -> drop_while_view<views::all_t<R>, Pred>;
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+struct Container {
+  int* begin() const;
+  int* end() const;
+};
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  bool operator()(int i) const;
+};
+
+bool pred(int);
+
+static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(Container{}, Pred{})),
+                             std::ranges::drop_while_view<std::ranges::owning_view<Container>, Pred>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(View{}, pred)), //
+                             std::ranges::drop_while_view<View, bool (*)(int)>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(View{}, Pred{})), //
+                             std::ranges::drop_while_view<View, Pred>>);
+
+void testRef() {
+  Container c{};
+  Pred p{};
+  static_assert(std::is_same_v<decltype(std::ranges::drop_while_view(c, p)),
+                               std::ranges::drop_while_view<std::ranges::ref_view<Container>, Pred>>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctor.default.pass.cpp
new file mode 100644
index 0000000..320bdfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctor.default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// drop_while_view() requires default_initializable<V> && default_initializable<Pred> = default;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+
+template <bool DefaultInitializable>
+struct View : std::ranges::view_base {
+  int i = 42;
+  constexpr explicit View()
+    requires DefaultInitializable
+  = default;
+  int* begin() const;
+  int* end() const;
+};
+
+template <bool DefaultInitializable>
+struct Pred {
+  int i = 42;
+  constexpr explicit Pred()
+    requires DefaultInitializable
+  = default;
+  bool operator()(int) const;
+};
+
+// clang-format off
+static_assert( std::is_default_constructible_v<std::ranges::drop_while_view<View<true >, Pred<true >>>);
+static_assert(!std::is_default_constructible_v<std::ranges::drop_while_view<View<false>, Pred<true >>>);
+static_assert(!std::is_default_constructible_v<std::ranges::drop_while_view<View<true >, Pred<false>>>);
+static_assert(!std::is_default_constructible_v<std::ranges::drop_while_view<View<false>, Pred<false>>>);
+// clang-format on
+
+constexpr bool test() {
+  {
+    std::ranges::drop_while_view<View<true>, Pred<true>> dwv = {};
+    assert(dwv.base().i == 42);
+    assert(dwv.pred().i == 42);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctor.view.pass.cpp
new file mode 100644
index 0000000..cf9f9db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/ctor.view.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr drop_while_view(V base, Pred pred);
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct View : std::ranges::view_base {
+  MoveOnly mo;
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  bool copied      = false;
+  bool moved       = false;
+  constexpr Pred() = default;
+  constexpr Pred(Pred&&) : moved(true) {}
+  constexpr Pred(const Pred&) : copied(true) {}
+  bool operator()(int) const;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::drop_while_view<View, Pred> dwv = {View{{}, MoveOnly{5}}, Pred{}};
+    assert(dwv.pred().moved);
+    assert(!dwv.pred().copied);
+    assert(std::move(dwv).base().mo.get() == 5);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/end.pass.cpp
new file mode 100644
index 0000000..cd24648
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/end.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end();
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+// Test that end is not const
+template <class T>
+concept HasEnd = requires(T t) { t.end(); };
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i < 3; }
+};
+
+static_assert(HasEnd<std::ranges::drop_while_view<View, Pred>>);
+static_assert(!HasEnd<const std::ranges::drop_while_view<View, Pred>>);
+
+constexpr bool test() {
+  // return iterator
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    std::ranges::drop_while_view dwv(buffer, Pred{});
+    std::same_as<int*> decltype(auto) st = dwv.end();
+    assert(st == buffer + 11);
+  }
+
+  // return sentinel
+  {
+    using Iter   = int*;
+    using Sent   = sentinel_wrapper<Iter>;
+    using Range  = std::ranges::subrange<Iter, Sent>;
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    Range range  = {buffer, Sent{buffer + 11}};
+    std::ranges::drop_while_view dwv(range, Pred{});
+    std::same_as<Sent> decltype(auto) st = dwv.end();
+    assert(base(st) == buffer + 11);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/general.pass.cpp
new file mode 100644
index 0000000..3c13362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/general.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how drop_while_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <string_view>
+
+int main(int, char**) {
+  using namespace std::string_view_literals;
+  std::string_view source = "  \t   \t   \t   hello there"sv;
+  auto is_invisible       = [](const auto x) { return x == ' ' || x == '\t'; };
+  auto skip_ws            = std::views::drop_while(source, is_invisible);
+  assert(std::ranges::equal(skip_ws, "hello there"sv));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/pred.pass.cpp
new file mode 100644
index 0000000..41ba8ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/pred.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr const Pred& pred() const;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+struct View : std::ranges::view_interface<View> {
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  int i;
+  bool operator()(int) const;
+};
+
+constexpr bool test() {
+  // &
+  {
+    std::ranges::drop_while_view<View, Pred> dwv{{}, Pred{5}};
+    decltype(auto) x = dwv.pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  // const &
+  {
+    const std::ranges::drop_while_view<View, Pred> dwv{{}, Pred{5}};
+    decltype(auto) x = dwv.pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  // &&
+  {
+    std::ranges::drop_while_view<View, Pred> dwv{{}, Pred{5}};
+    decltype(auto) x = std::move(dwv).pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  // const &&
+  {
+    const std::ranges::drop_while_view<View, Pred> dwv{{}, Pred{5}};
+    decltype(auto) x = std::move(dwv).pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/range.concept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/range.concept.compile.pass.cpp
new file mode 100644
index 0000000..f522458
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop.while/range.concept.compile.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// concept checking
+// template<view V, class Pred>
+//     requires input_range<V> && is_object_v<Pred> &&
+//              indirect_unary_predicate<const Pred, iterator_t<V>>
+//   class drop_while_view;
+
+#include <array>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class It>
+using Range = std::ranges::subrange<It, sentinel_wrapper<It>>;
+
+template <class Val = int>
+struct Pred {
+  bool operator()(const Val&) const;
+};
+
+template <class V, class Pred>
+concept HasDropWhileView = requires { typename std::ranges::drop_while_view<V, Pred>; };
+
+static_assert(HasDropWhileView<Range<int*>, bool (*)(int)>);
+static_assert(HasDropWhileView<Range<int*>, Pred<int>>);
+
+// !view<V>
+static_assert(!HasDropWhileView<std::array<int, 5>, Pred<int>>);
+
+// !input_range
+static_assert(!HasDropWhileView<Range<cpp20_output_iterator<int*>>, bool (*)(int)>);
+
+// !is_object_v<Pred>
+static_assert(!HasDropWhileView<Range<int*>, Pred<int>&>);
+
+// !indirect_unary_predicate<const Pred, iterator_t<V>>
+static_assert(!HasDropWhileView<Range<int*>, int>);
+static_assert(!HasDropWhileView<Range<int**>, Pred<int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/adaptor.pass.cpp
new file mode 100644
index 0000000..6dd90c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/adaptor.pass.cpp
@@ -0,0 +1,238 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::drop
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <span>
+#include <string_view>
+#include <utility>
+#include "test_iterators.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct SizedView : std::ranges::view_base {
+  int* begin_ = nullptr;
+  int* end_ = nullptr;
+  constexpr SizedView(int* begin, int* end) : begin_(begin), end_(end) {}
+
+  constexpr auto begin() const { return forward_iterator<int*>(begin_); }
+  constexpr auto end() const { return sized_sentinel<forward_iterator<int*>>(forward_iterator<int*>(end_)); }
+};
+static_assert(std::ranges::forward_range<SizedView>);
+static_assert(std::ranges::sized_range<SizedView>);
+static_assert(std::ranges::view<SizedView>);
+
+struct SizedViewWithUnsizedSentinel : std::ranges::view_base {
+  using iterator = random_access_iterator<int*>;
+  using sentinel = sentinel_wrapper<random_access_iterator<int*>>;
+
+  int* begin_ = nullptr;
+  int* end_ = nullptr;
+  constexpr SizedViewWithUnsizedSentinel(int* begin, int* end) : begin_(begin), end_(end) {}
+
+  constexpr auto begin() const { return iterator(begin_); }
+  constexpr auto end() const { return sentinel(iterator(end_)); }
+  constexpr size_t size() const { return end_ - begin_; }
+};
+static_assert(std::ranges::random_access_range<SizedViewWithUnsizedSentinel>);
+static_assert(std::ranges::sized_range<SizedViewWithUnsizedSentinel>);
+static_assert(!std::sized_sentinel_for<SizedViewWithUnsizedSentinel::sentinel, SizedViewWithUnsizedSentinel::iterator>);
+static_assert(std::ranges::view<SizedViewWithUnsizedSentinel>);
+
+template <class T>
+constexpr void test_small_range(const T& input) {
+  constexpr int N = 100;
+  auto size = std::ranges::size(input);
+  assert(size < N);
+
+  auto result = input | std::views::drop(N);
+  assert(result.empty());
+}
+
+constexpr bool test() {
+  constexpr int N = 8;
+  int buf[N] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Test that `std::views::drop` is a range adaptor.
+  {
+    using SomeView = SizedView;
+
+    // Test `view | views::drop`
+    {
+      SomeView view(buf, buf + N);
+      std::same_as<std::ranges::drop_view<SomeView>> decltype(auto) result = view | std::views::drop(3);
+      assert(result.base().begin_ == buf);
+      assert(result.base().end_ == buf + N);
+      assert(base(result.begin()) == buf + 3);
+      assert(base(base(result.end())) == buf + N);
+      assert(result.size() == 5);
+    }
+
+    // Test `adaptor | views::drop`
+    {
+      SomeView view(buf, buf + N);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::transform(f) | std::views::drop(3);
+
+      using Result = std::ranges::drop_view<std::ranges::transform_view<SomeView, decltype(f)>>;
+      std::same_as<Result> decltype(auto) result = partial(view);
+      assert(result.base().base().begin_ == buf);
+      assert(result.base().base().end_ == buf + N);
+      assert(base(result.begin().base()) == buf + 3);
+      assert(base(base(result.end().base())) == buf + N);
+      assert(result.size() == 5);
+    }
+
+    // Test `views::drop | adaptor`
+    {
+      SomeView view(buf, buf + N);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::drop(3) | std::views::transform(f);
+
+      using Result = std::ranges::transform_view<std::ranges::drop_view<SomeView>, decltype(f)>;
+      std::same_as<Result> decltype(auto) result = partial(view);
+      assert(result.base().base().begin_ == buf);
+      assert(result.base().base().end_ == buf + N);
+      assert(base(result.begin().base()) == buf + 3);
+      assert(base(base(result.end().base())) == buf + N);
+      assert(result.size() == 5);
+    }
+
+    // Check SFINAE friendliness
+    {
+      struct NotAView { };
+      static_assert(!std::is_invocable_v<decltype(std::views::drop)>);
+      static_assert(!std::is_invocable_v<decltype(std::views::drop), NotAView, int>);
+      static_assert( CanBePiped<SomeView&,   decltype(std::views::drop(3))>);
+      static_assert( CanBePiped<int(&)[10],  decltype(std::views::drop(3))>);
+      static_assert(!CanBePiped<int(&&)[10], decltype(std::views::drop(3))>);
+      static_assert(!CanBePiped<NotAView,    decltype(std::views::drop(3))>);
+
+      static_assert(!CanBePiped<SomeView&,   decltype(std::views::drop(/*n=*/NotAView{}))>);
+    }
+  }
+
+  {
+    static_assert(std::same_as<decltype(std::views::drop), decltype(std::ranges::views::drop)>);
+  }
+
+  // `views::drop(empty_view, n)` returns an `empty_view`.
+  {
+    using Result = std::ranges::empty_view<int>;
+    [[maybe_unused]] std::same_as<Result> decltype(auto) result = std::views::empty<int> | std::views::drop(3);
+  }
+
+  // `views::drop(span, n)` returns a `span`.
+  {
+    std::span<int> s(buf);
+    std::same_as<decltype(s)> decltype(auto) result = s | std::views::drop(5);
+    assert(result.size() == 3);
+  }
+
+  // `views::drop(span, n)` returns a `span` with a dynamic extent, regardless of the input `span`.
+  {
+    std::span<int, 8> s(buf);
+    std::same_as<std::span<int, std::dynamic_extent>> decltype(auto) result = s | std::views::drop(3);
+    assert(result.size() == 5);
+  }
+
+  // `views::drop(string_view, n)` returns a `string_view`.
+  {
+    {
+      std::string_view sv = "abcdef";
+      std::same_as<decltype(sv)> decltype(auto) result = sv | std::views::drop(2);
+      assert(result.size() == 4);
+    }
+
+    {
+      std::u32string_view sv = U"abcdef";
+      std::same_as<decltype(sv)> decltype(auto) result = sv | std::views::drop(2);
+      assert(result.size() == 4);
+    }
+  }
+
+  // `views::drop(iota_view, n)` returns an `iota_view`.
+  {
+    auto iota = std::views::iota(1, 8);
+    // The second template argument of the resulting `iota_view` is different because it has to be able to hold
+    // the `range_difference_t` of the input `iota_view`.
+    using Result = std::ranges::iota_view<int, int>;
+    std::same_as<Result> decltype(auto) result = iota | std::views::drop(3);
+    assert(result.size() == 4);
+    assert(*result.begin() == 4);
+    assert(*std::ranges::next(result.begin(), 3) == 7);
+  }
+
+  // `views::drop(subrange, n)` returns a `subrange` when `subrange::StoreSize == false`.
+  {
+    auto subrange = std::ranges::subrange(buf, buf + N);
+    LIBCPP_STATIC_ASSERT(!decltype(subrange)::_StoreSize);
+
+    using Result = std::ranges::subrange<int*>;
+    std::same_as<Result> decltype(auto) result = subrange | std::views::drop(3);
+    assert(result.size() == 5);
+  }
+
+  // `views::drop(subrange, n)` returns a `subrange` when `subrange::StoreSize == true`.
+  {
+    using View = SizedViewWithUnsizedSentinel;
+    View view(buf, buf + N);
+
+    using Subrange = std::ranges::subrange<View::iterator, View::sentinel, std::ranges::subrange_kind::sized>;
+    auto subrange = Subrange(view.begin(), view.end(), std::ranges::distance(view.begin(), view.end()));
+    LIBCPP_STATIC_ASSERT(decltype(subrange)::_StoreSize);
+
+    std::same_as<Subrange> decltype(auto) result = subrange | std::views::drop(3);
+    assert(result.size() == 5);
+  }
+
+  // `views::drop(subrange, n)` doesn't return a `subrange` if it's not a random access range.
+  {
+    SizedView v(buf, buf + N);
+    auto subrange = std::ranges::subrange(v.begin(), v.end());
+
+    using Result = std::ranges::drop_view<std::ranges::subrange<forward_iterator<int*>,
+        sized_sentinel<forward_iterator<int*>>>>;
+    std::same_as<Result> decltype(auto) result = subrange | std::views::drop(3);
+    assert(result.size() == 5);
+  }
+
+  // When the size of the input range `s` is shorter than `n`, an `empty_view` is returned.
+  {
+    test_small_range(std::span(buf));
+    test_small_range(std::string_view("abcdef"));
+    test_small_range(std::ranges::subrange(buf, buf + N));
+    test_small_range(std::views::iota(1, 8));
+  }
+
+  // Test that it's possible to call `std::views::drop` with any single argument as long as the resulting closure is
+  // never invoked. There is no good use case for it, but it's valid.
+  {
+    struct X { };
+    [[maybe_unused]] auto partial = std::views::drop(X{});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/base.pass.cpp
new file mode 100644
index 0000000..eaf2e7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/base.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const& requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  std::ranges::drop_view<MoveOnlyView> dropView1;
+  auto base1 = std::move(dropView1).base();
+  assert(std::ranges::begin(base1) == globalBuff);
+
+  // Note: we should *not* drop two elements here.
+  std::ranges::drop_view<MoveOnlyView> dropView2(MoveOnlyView{4}, 2);
+  auto base2 = std::move(dropView2).base();
+  assert(std::ranges::begin(base2) == globalBuff + 4);
+
+  std::ranges::drop_view<CopyableView> dropView3;
+  auto base3 = dropView3.base();
+  assert(std::ranges::begin(base3) == globalBuff);
+  auto base4 = std::move(dropView3).base();
+  assert(std::ranges::begin(base4) == globalBuff);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/begin.pass.cpp
new file mode 100644
index 0000000..5d08c70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/begin.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin()
+//   requires (!(simple-view<V> &&
+//               random_access_range<const V> && sized_range<const V>));
+// constexpr auto begin() const
+//   requires random_access_range<const V> && sized_range<const V>;
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "types.h"
+
+template<class T>
+concept BeginInvocable = requires(std::ranges::drop_view<T> t) { t.begin(); };
+
+template <bool IsSimple>
+struct MaybeSimpleView : std::ranges::view_base {
+  int* num_of_non_const_begin_calls;
+  int* num_of_const_begin_calls;
+
+  constexpr int* begin() {
+    ++(*num_of_non_const_begin_calls);
+    return nullptr;
+  }
+  constexpr std::conditional_t<IsSimple, int*, const int*> begin() const {
+    ++(*num_of_const_begin_calls);
+    return nullptr;
+  }
+  constexpr int* end() const { return nullptr; }
+  constexpr size_t size() const { return 0; }
+};
+
+using SimpleView = MaybeSimpleView<true>;
+using NonSimpleView = MaybeSimpleView<false>;
+
+constexpr bool test() {
+  // random_access_range<const V> && sized_range<const V>
+  std::ranges::drop_view dropView1(MoveOnlyView(), 4);
+  assert(dropView1.begin() == globalBuff + 4);
+
+  // !random_access_range<const V>
+  std::ranges::drop_view dropView2(ForwardView(), 4);
+  assert(base(dropView2.begin()) == globalBuff + 4);
+
+  // !random_access_range<const V>
+  std::ranges::drop_view dropView3(InputView(), 4);
+  assert(base(dropView3.begin()) == globalBuff + 4);
+
+  // random_access_range<const V> && sized_range<const V>
+  std::ranges::drop_view dropView4(MoveOnlyView(), 8);
+  assert(dropView4.begin() == globalBuff + 8);
+
+  // random_access_range<const V> && sized_range<const V>
+  std::ranges::drop_view dropView5(MoveOnlyView(), 0);
+  assert(dropView5.begin() == globalBuff);
+
+  // random_access_range<const V> && sized_range<const V>
+  const std::ranges::drop_view dropView6(MoveOnlyView(), 0);
+  assert(dropView6.begin() == globalBuff);
+
+  // random_access_range<const V> && sized_range<const V>
+  std::ranges::drop_view dropView7(MoveOnlyView(), 10);
+  assert(dropView7.begin() == globalBuff + 8);
+
+  CountedView view8;
+  std::ranges::drop_view dropView8(view8, 5);
+  assert(base(base(dropView8.begin())) == globalBuff + 5);
+  assert(dropView8.begin().stride_count() == 5);
+  assert(base(base(dropView8.begin())) == globalBuff + 5);
+  assert(dropView8.begin().stride_count() == 5);
+
+  static_assert(!BeginInvocable<const ForwardView>);
+
+  {
+    static_assert(std::ranges::random_access_range<const SimpleView>);
+    static_assert(std::ranges::sized_range<const SimpleView>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleView>);
+    int non_const_calls = 0;
+    int const_calls = 0;
+    std::ranges::drop_view dropView(SimpleView{{}, &non_const_calls, &const_calls}, 4);
+    assert(dropView.begin() == nullptr);
+    assert(non_const_calls == 0);
+    assert(const_calls == 1);
+    assert(std::as_const(dropView).begin() == nullptr);
+    assert(non_const_calls == 0);
+    assert(const_calls == 2);
+  }
+
+  {
+    static_assert(std::ranges::random_access_range<const NonSimpleView>);
+    static_assert(std::ranges::sized_range<const NonSimpleView>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimpleView>);
+    int non_const_calls = 0;
+    int const_calls = 0;
+    std::ranges::drop_view dropView(NonSimpleView{{}, &non_const_calls, &const_calls}, 4);
+    assert(dropView.begin() == nullptr);
+    assert(non_const_calls == 1);
+    assert(const_calls == 0);
+    assert(std::as_const(dropView).begin() == nullptr);
+    assert(non_const_calls == 1);
+    assert(const_calls == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctad.compile.pass.cpp
new file mode 100644
index 0000000..909fff3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctad.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+//   drop_view(R&&, range_difference_t<R>) -> drop_view<views::all_t<R>>;
+
+#include <cassert>
+#include <concepts>
+#include <ranges>
+#include <utility>
+
+struct View : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+void testCTAD() {
+    View v;
+    Range r;
+    BorrowedRange br;
+
+    static_assert(std::same_as<
+        decltype(std::ranges::drop_view(v, 0)),
+        std::ranges::drop_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::drop_view(std::move(v), 0)),
+        std::ranges::drop_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::drop_view(r, 0)),
+        std::ranges::drop_view<std::ranges::ref_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::drop_view(std::move(r), 0)),
+        std::ranges::drop_view<std::ranges::owning_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::drop_view(br, 0)),
+        std::ranges::drop_view<std::ranges::ref_view<BorrowedRange>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::drop_view(std::move(br), 0)),
+        std::ranges::drop_view<std::ranges::owning_view<BorrowedRange>>
+    >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctor.default.pass.cpp
new file mode 100644
index 0000000..ba6e2eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctor.default.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// drop_view() requires default_initializable<V> = default;
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  std::ranges::drop_view<MoveOnlyView> dropView1;
+  assert(std::ranges::begin(dropView1) == globalBuff);
+
+  static_assert( std::is_default_constructible_v<std::ranges::drop_view<ForwardView>>);
+  static_assert(!std::is_default_constructible_v<std::ranges::drop_view<NoDefaultCtorForwardView>>);
+
+  LIBCPP_STATIC_ASSERT( std::is_nothrow_default_constructible_v<std::ranges::drop_view<ForwardView>>);
+  static_assert(!std::is_nothrow_default_constructible_v<ThrowingDefaultCtorForwardView>);
+  static_assert(!std::is_nothrow_default_constructible_v<std::ranges::drop_view<ThrowingDefaultCtorForwardView>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctor.view.pass.cpp
new file mode 100644
index 0000000..504021a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/ctor.view.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr drop_view(V base, range_difference_t<V> count);
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  std::ranges::drop_view dropView1(MoveOnlyView(), 4);
+  assert(dropView1.size() == 4);
+  assert(dropView1.begin() == globalBuff + 4);
+
+  std::ranges::drop_view dropView2(ForwardView(), 4);
+  assert(base(dropView2.begin()) == globalBuff + 4);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/dangling.cache.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/dangling.cache.pass.cpp
new file mode 100644
index 0000000..ebe6386
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/dangling.cache.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// If we have a copy-propagating cache, when we copy ZeroOnDestroy, we will get a
+// dangling reference to the copied-from object. This test ensures that we do not
+// propagate the cache on copy.
+
+#include <ranges>
+
+#include <cstddef>
+#include <cstring>
+
+#include "test_macros.h"
+#include "types.h"
+
+struct ZeroOnDestroy : std::ranges::view_base {
+  unsigned count = 0;
+  int buff[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  constexpr ForwardIter begin() { return ForwardIter(buff); }
+  constexpr ForwardIter begin() const { return ForwardIter(); }
+  constexpr ForwardIter end() { return ForwardIter(buff + 8); }
+  constexpr ForwardIter end() const { return ForwardIter(); }
+
+  ~ZeroOnDestroy() {
+    std::memset(buff, 0, sizeof(buff));
+  }
+
+  static auto dropFirstFour() {
+    ZeroOnDestroy zod;
+    std::ranges::drop_view dv(zod, 4);
+    // Make sure we call begin here so the next call to begin will
+    // use the cached iterator.
+    assert(*dv.begin() == 5);
+    // Intentionally invoke the copy ctor here.
+    return std::ranges::drop_view(dv);
+  }
+};
+
+int main(int, char**) {
+  auto noDanlingCache = ZeroOnDestroy::dropFirstFour();
+  // If we use the cached version, it will reference the copied-from view.
+  // Worst case this is a segfault, best case it's an assertion fired.
+  assert(*noDanlingCache.begin() == 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/end.pass.cpp
new file mode 100644
index 0000000..62182ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/end.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end()
+//   requires (!simple-view<V>)
+// constexpr auto end() const
+//   requires range<const V>
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  // range<const V>
+  std::ranges::drop_view dropView1(MoveOnlyView(), 4);
+  assert(dropView1.end() == globalBuff + 8);
+
+  // !simple-view<V>
+  std::ranges::drop_view dropView2(InputView(), 4);
+  assert(dropView2.end() == globalBuff + 8);
+
+  // range<const V>
+  const std::ranges::drop_view dropView3(MoveOnlyView(), 0);
+  assert(dropView3.end() == globalBuff + 8);
+
+  // !simple-view<V>
+  const std::ranges::drop_view dropView4(InputView(), 2);
+  assert(dropView4.end() == globalBuff + 8);
+
+  // range<const V>
+  std::ranges::drop_view dropView5(MoveOnlyView(), 10);
+  assert(dropView5.end() == globalBuff + 8);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/general.pass.cpp
new file mode 100644
index 0000000..e5a36e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/general.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how drop_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+#include <ranges>
+
+#include <vector>
+#include <list>
+#include <string>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "types.h"
+
+template<class T>
+concept ValidDropView = requires { typename std::ranges::drop_view<T>; };
+
+static_assert( ValidDropView<MoveOnlyView>);
+static_assert(!ValidDropView<Range>);
+
+static_assert(!std::ranges::enable_borrowed_range<std::ranges::drop_view<MoveOnlyView>>);
+static_assert( std::ranges::enable_borrowed_range<std::ranges::drop_view<BorrowableView>>);
+
+template<std::ranges::view View>
+bool orderedFibonacci(View v, int n = 1) {
+  if (v.size() < 3)
+    return true;
+
+  if (v[2] != v[0] + v[1])
+    return false;
+
+  return orderedFibonacci(std::ranges::drop_view(v.base(), n), n + 1);
+}
+
+template<std::ranges::view View>
+std::ranges::view auto makeEven(View v) {
+  return std::ranges::drop_view(v, v.size() % 2);
+}
+
+template<std::ranges::view View, class T>
+int indexOf(View v, T element) {
+  int index = 0;
+  for (auto e : v) {
+    if (e == element)
+      return index;
+    index++;
+  }
+  return -1;
+}
+
+template<std::ranges::view View, class T>
+std::ranges::view auto removeBefore(View v, T element) {
+  std::ranges::drop_view out(v, indexOf(v, element) + 1);
+  return View(out.begin(), out.end());
+}
+
+template<>
+constexpr bool std::ranges::enable_view<std::vector<int>> = true;
+
+template<>
+constexpr bool std::ranges::enable_view<std::list<int>> = true;
+
+template<>
+constexpr bool std::ranges::enable_view<std::string> = true;
+
+int main(int, char**) {
+  const std::vector vec = {1,1,2,3,5,8,13};
+  assert(orderedFibonacci(std::ranges::drop_view(vec, 0)));
+  const std::vector vec2 = {1,1,2,3,5,8,14};
+  assert(!orderedFibonacci(std::ranges::drop_view(vec2, 0)));
+
+  const std::list l = {1, 2, 3};
+  auto el = makeEven(l);
+  assert(el.size() == 2);
+  assert(*el.begin() == 2);
+
+  const std::string s = "Hello, World";
+  assert(removeBefore(s, ' ') == "World");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/size.pass.cpp
new file mode 100644
index 0000000..8647bfa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/size.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size()
+//   requires sized_range<V>
+// constexpr auto size() const
+//   requires sized_range<const V>
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T>
+concept SizeInvocable = requires(std::ranges::drop_view<T> t) { t.size(); };
+
+constexpr bool test() {
+  // sized_range<V>
+  std::ranges::drop_view dropView1(MoveOnlyView(), 4);
+  assert(dropView1.size() == 4);
+
+  // sized_range<V>
+  std::ranges::drop_view dropView2(MoveOnlyView(), 0);
+  assert(dropView2.size() == 8);
+
+  // sized_range<const V>
+  const std::ranges::drop_view dropView3(MoveOnlyView(), 8);
+  assert(dropView3.size() == 0);
+
+  // sized_range<const V>
+  const std::ranges::drop_view dropView4(MoveOnlyView(), 10);
+  assert(dropView4.size() == 0);
+
+  // Because ForwardView is not a sized_range.
+  static_assert(!SizeInvocable<ForwardView>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/types.h
new file mode 100644
index 0000000..b32c534
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.drop/types.h
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_DROP_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_DROP_TYPES_H
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int globalBuff[8];
+
+struct MoveOnlyView : std::ranges::view_base {
+  int start_;
+  constexpr explicit MoveOnlyView(int start = 0) : start_(start) {}
+  constexpr MoveOnlyView(MoveOnlyView&&) = default;
+  constexpr MoveOnlyView& operator=(MoveOnlyView&&) = default;
+  constexpr int *begin() const { return globalBuff + start_; }
+  constexpr int *end() const { return globalBuff + 8; }
+};
+static_assert( std::ranges::view<MoveOnlyView>);
+static_assert( std::ranges::contiguous_range<MoveOnlyView>);
+static_assert(!std::copyable<MoveOnlyView>);
+
+struct CopyableView : std::ranges::view_base {
+  int start_;
+  constexpr explicit CopyableView(int start = 0) : start_(start) {}
+  constexpr CopyableView(CopyableView const&) = default;
+  constexpr CopyableView& operator=(CopyableView const&) = default;
+  constexpr int *begin() const { return globalBuff + start_; }
+  constexpr int *end() const { return globalBuff + 8; }
+};
+
+using ForwardIter = forward_iterator<int*>;
+struct ForwardView : std::ranges::view_base {
+  constexpr explicit ForwardView() = default;
+  constexpr ForwardView(ForwardView&&) = default;
+  constexpr ForwardView& operator=(ForwardView&&) = default;
+  constexpr forward_iterator<int*> begin() const { return forward_iterator<int*>(globalBuff); }
+  constexpr forward_iterator<int*> end() const { return forward_iterator<int*>(globalBuff + 8); }
+};
+
+struct ForwardRange {
+  ForwardIter begin() const;
+  ForwardIter end() const;
+};
+
+struct ThrowingDefaultCtorForwardView : std::ranges::view_base {
+  ThrowingDefaultCtorForwardView() noexcept(false);
+  ForwardIter begin() const;
+  ForwardIter end() const;
+};
+
+struct NoDefaultCtorForwardView : std::ranges::view_base {
+  NoDefaultCtorForwardView() = delete;
+  ForwardIter begin() const;
+  ForwardIter end() const;
+};
+
+struct BorrowableRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowableRange> = true;
+
+struct BorrowableView : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowableView> = true;
+
+struct InputView : std::ranges::view_base {
+  constexpr cpp20_input_iterator<int*> begin() const { return cpp20_input_iterator<int*>(globalBuff); }
+  constexpr int* end() const { return globalBuff + 8; }
+};
+// TODO: remove these bogus operators
+constexpr bool operator==(const cpp20_input_iterator<int*> &lhs, int* rhs) { return base(lhs) == rhs; }
+constexpr bool operator==(int* lhs, const cpp20_input_iterator<int*> &rhs) { return base(rhs) == lhs; }
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+using CountedIter = stride_counting_iterator<forward_iterator<int*>>;
+struct CountedView : std::ranges::view_base {
+  constexpr CountedIter begin() const { return CountedIter(ForwardIter(globalBuff)); }
+  constexpr CountedIter end() const { return CountedIter(ForwardIter(globalBuff + 8)); }
+};
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_DROP_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/adaptor.pass.cpp
new file mode 100644
index 0000000..d68d6e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/adaptor.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::elements<N>
+// std::views::keys
+// std::views::values
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+template <class T>
+struct View : std::ranges::view_base {
+  T* begin() const;
+  T* end() const;
+};
+
+static_assert(!std::is_invocable_v<decltype((std::views::elements<0>))>);
+static_assert(!std::is_invocable_v<decltype((std::views::elements<0>)), View<int>>);
+static_assert(std::is_invocable_v<decltype((std::views::elements<0>)), View<std::pair<int, int>>>);
+static_assert(std::is_invocable_v<decltype((std::views::elements<0>)), View<std::tuple<int>>>);
+static_assert(!std::is_invocable_v<decltype((std::views::elements<5>)), View<std::tuple<int>>>);
+
+static_assert(!std::is_invocable_v<decltype((std::views::keys))>);
+static_assert(!std::is_invocable_v<decltype((std::views::keys)), View<int>>);
+static_assert(std::is_invocable_v<decltype((std::views::keys)), View<std::pair<int, int>>>);
+static_assert(std::is_invocable_v<decltype((std::views::keys)), View<std::tuple<int>>>);
+
+static_assert(!std::is_invocable_v<decltype((std::views::values))>);
+static_assert(!std::is_invocable_v<decltype((std::views::values)), View<int>>);
+static_assert(std::is_invocable_v<decltype((std::views::values)), View<std::pair<int, int>>>);
+static_assert(!std::is_invocable_v<decltype((std::views::values)), View<std::tuple<int>>>);
+
+template <class View, class T>
+concept CanBePiped =
+    requires(View&& view, T&& t) {
+      { std::forward<View>(view) | std::forward<T>(t) };
+    };
+
+static_assert(!CanBePiped<View<int>, decltype((std::views::elements<0>))>);
+static_assert(CanBePiped<View<std::pair<int, int>>, decltype((std::views::elements<0>))>);
+static_assert(CanBePiped<View<std::tuple<int>>, decltype((std::views::elements<0>))>);
+static_assert(!CanBePiped<View<std::tuple<int>>, decltype((std::views::elements<5>))>);
+
+static_assert(!CanBePiped<View<int>, decltype((std::views::keys))>);
+static_assert(CanBePiped<View<std::pair<int, int>>, decltype((std::views::keys))>);
+static_assert(CanBePiped<View<std::tuple<int>>, decltype((std::views::keys))>);
+
+static_assert(!CanBePiped<View<int>, decltype((std::views::values))>);
+static_assert(CanBePiped<View<std::pair<int, int>>, decltype((std::views::values))>);
+static_assert(!CanBePiped<View<std::tuple<int>>, decltype((std::views::values))>);
+
+constexpr bool test() {
+  std::pair<int, int> buff[] = {{1, 2}, {3, 4}, {5, 6}};
+
+  // Test `views::elements<N>(v)`
+  {
+    using Result = std::ranges::elements_view<std::ranges::ref_view<std::pair<int, int>[3]>, 0>;
+    std::same_as<Result> decltype(auto) result = std::views::elements<0>(buff);
+    auto expected                              = {1, 3, 5};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `views::keys(v)`
+  {
+    using Result = std::ranges::elements_view<std::ranges::ref_view<std::pair<int, int>[3]>, 0>;
+    std::same_as<Result> decltype(auto) result = std::views::keys(buff);
+    auto expected                              = {1, 3, 5};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `views::values(v)`
+  {
+    using Result = std::ranges::elements_view<std::ranges::ref_view<std::pair<int, int>[3]>, 1>;
+    std::same_as<Result> decltype(auto) result = std::views::values(buff);
+    auto expected                              = {2, 4, 6};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `v | views::elements<N>`
+  {
+    using Result = std::ranges::elements_view<std::ranges::ref_view<std::pair<int, int>[3]>, 1>;
+    std::same_as<Result> decltype(auto) result = buff | std::views::elements<1>;
+    auto expected                              = {2, 4, 6};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `v | views::keys`
+  {
+    using Result = std::ranges::elements_view<std::ranges::ref_view<std::pair<int, int>[3]>, 0>;
+    std::same_as<Result> decltype(auto) result = buff | std::views::keys;
+    auto expected                              = {1, 3, 5};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `v | views::values`
+  {
+    using Result = std::ranges::elements_view<std::ranges::ref_view<std::pair<int, int>[3]>, 1>;
+    std::same_as<Result> decltype(auto) result = buff | std::views::values;
+    auto expected                              = {2, 4, 6};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test views::elements<0> | views::elements<0>
+  {
+    std::pair<std::tuple<int>, std::tuple<int>> nested[] = {{{1}, {2}}, {{3}, {4}}, {{5}, {6}}};
+    using Result                                         = std::ranges::elements_view<
+        std::ranges::elements_view<std::ranges::ref_view<std::pair<std::tuple<int>, std::tuple<int>>[3]>, 0>,
+        0>;
+    auto const partial                         = std::views::elements<0> | std::views::elements<0>;
+    std::same_as<Result> decltype(auto) result = nested | partial;
+    auto expected                              = {1, 3, 5};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test views::keys | views::keys
+  {
+    std::pair<std::tuple<int>, std::tuple<int>> nested[] = {{{1}, {2}}, {{3}, {4}}, {{5}, {6}}};
+    using Result                                         = std::ranges::elements_view<
+        std::ranges::elements_view<std::ranges::ref_view<std::pair<std::tuple<int>, std::tuple<int>>[3]>, 0>,
+        0>;
+    auto const partial                         = std::views::keys | std::views::keys;
+    std::same_as<Result> decltype(auto) result = nested | partial;
+    auto expected                              = {1, 3, 5};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test views::values | views::values
+  {
+    std::pair<std::tuple<int>, std::tuple<int, int>> nested[] = {{{1}, {2, 3}}, {{4}, {5, 6}}, {{7}, {8, 9}}};
+    using Result                                              = std::ranges::elements_view<
+        std::ranges::elements_view<std::ranges::ref_view<std::pair<std::tuple<int>, std::tuple<int, int>>[3]>, 1>,
+        1>;
+    auto const partial                         = std::views::values | std::views::values;
+    std::same_as<Result> decltype(auto) result = nested | partial;
+    auto expected                              = {3, 6, 9};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test views::keys | views::values
+  {
+    std::pair<std::tuple<int, int>, std::tuple<int>> nested[] = {{{1, 2}, {3}}, {{4, 5}, {6}}, {{7, 8}, {9}}};
+    using Result                                              = std::ranges::elements_view<
+        std::ranges::elements_view<std::ranges::ref_view<std::pair<std::tuple<int, int>, std::tuple<int>>[3]>, 0>,
+        1>;
+    auto const partial                         = std::views::keys | std::views::values;
+    std::same_as<Result> decltype(auto) result = nested | partial;
+    auto expected                              = {2, 5, 8};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test views::values | views::keys
+  {
+    std::pair<std::tuple<int>, std::tuple<int, int>> nested[] = {{{1}, {2, 3}}, {{4}, {5, 6}}, {{7}, {8, 9}}};
+    using Result                                              = std::ranges::elements_view<
+        std::ranges::elements_view<std::ranges::ref_view<std::pair<std::tuple<int>, std::tuple<int, int>>[3]>, 1>,
+        0>;
+    auto const partial                         = std::views::values | std::views::keys;
+    std::same_as<Result> decltype(auto) result = nested | partial;
+    auto expected                              = {2, 5, 8};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/base.pass.cpp
new file mode 100644
index 0000000..7fbd27d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/base.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const & requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct View : std::ranges::view_base {
+  int i;
+  std::tuple<int>* begin() const;
+  std::tuple<int>* end() const;
+};
+
+struct MoveOnlyView : View {
+  MoveOnly mo;
+};
+
+template <class T>
+concept HasBase = requires(T&& t) { std::forward<T>(t).base(); };
+
+static_assert(HasBase<std::ranges::elements_view<View, 0> const&>);
+static_assert(HasBase<std::ranges::elements_view<View, 0>&&>);
+
+static_assert(!HasBase<std::ranges::elements_view<MoveOnlyView, 0> const&>);
+static_assert(HasBase<std::ranges::elements_view<MoveOnlyView, 0>&&>);
+
+constexpr bool test() {
+  // const &
+  {
+    const std::ranges::elements_view<View, 0> ev{View{{}, 5}};
+    std::same_as<View> decltype(auto) v = ev.base();
+    assert(v.i == 5);
+  }
+
+  // &
+  {
+    std::ranges::elements_view<View, 0> ev{View{{}, 5}};
+    std::same_as<View> decltype(auto) v = ev.base();
+    assert(v.i == 5);
+  }
+
+  // &&
+  {
+    std::ranges::elements_view<View, 0> ev{View{{}, 5}};
+    std::same_as<View> decltype(auto) v = std::move(ev).base();
+    assert(v.i == 5);
+  }
+
+  // const &&
+  {
+    const std::ranges::elements_view<View, 0> ev{View{{}, 5}};
+    std::same_as<View> decltype(auto) v = std::move(ev).base();
+    assert(v.i == 5);
+  }
+
+  // move only
+  {
+    std::ranges::elements_view<MoveOnlyView, 0> ev{MoveOnlyView{{}, 5}};
+    std::same_as<MoveOnlyView> decltype(auto) v = std::move(ev).base();
+    assert(v.mo.get() == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/begin.pass.cpp
new file mode 100644
index 0000000..824e8f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/begin.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  constexpr auto begin() requires (!simple-view<V>)
+//  constexpr auto begin() const requires range<const V>
+
+#include <cassert>
+#include <concepts>
+#include <ranges>
+#include <tuple>
+#include <utility>
+
+#include "types.h"
+
+template <class T>
+concept HasConstBegin = requires(const T ct) { ct.begin(); };
+
+template <class T>
+concept HasBegin = requires(T t) { t.begin(); };
+
+template <class T>
+concept HasConstAndNonConstBegin =
+    HasConstBegin<T> &&
+    // because const begin and non-const begin returns different types (iterator<true>, iterator<false>)
+    requires(T t, const T ct) { requires !std::same_as<decltype(t.begin()), decltype(ct.begin())>; };
+
+template <class T>
+concept HasOnlyNonConstBegin = HasBegin<T> && !HasConstBegin<T>;
+
+template <class T>
+concept HasOnlyConstBegin = HasConstBegin<T> && !HasConstAndNonConstBegin<T>;
+
+struct NoConstBeginView : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+  constexpr std::tuple<int>* begin() { return buffer_; }
+  constexpr std::tuple<int>* end() { return buffer_ + size_; }
+};
+
+// simple-view<V>
+static_assert(HasOnlyConstBegin<std::ranges::elements_view<SimpleCommon, 0>>);
+
+// !simple-view<V> && range<const V>
+static_assert(HasConstAndNonConstBegin<std::ranges::elements_view<NonSimpleCommon, 0>>);
+
+// !range<const V>
+static_assert(HasOnlyNonConstBegin<std::ranges::elements_view<NoConstBeginView, 0>>);
+
+constexpr bool test() {
+  std::tuple<int> buffer[] = {{1}, {2}};
+  {
+    // underlying iterator should be pointing to the first element
+    auto ev   = std::views::elements<0>(buffer);
+    auto iter = ev.begin();
+    assert(&(*iter) == &std::get<0>(buffer[0]));
+  }
+
+  {
+    // underlying range models simple-view
+    auto v = std::views::elements<0>(SimpleCommon{buffer});
+    static_assert(std::is_same_v<decltype(v.begin()), decltype(std::as_const(v).begin())>);
+    assert(v.begin() == std::as_const(v).begin());
+    auto&& r = *std::as_const(v).begin();
+    assert(&r == &std::get<0>(buffer[0]));
+  }
+
+  {
+    // underlying const R is not a range
+    auto v   = std::views::elements<0>(NoConstBeginView{buffer});
+    auto&& r = *v.begin();
+    assert(&r == &std::get<0>(buffer[0]));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/borrowed.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/borrowed.compile.pass.cpp
new file mode 100644
index 0000000..8cc08e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/borrowed.compile.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+//
+// template<class T, size_t N>
+//   inline constexpr bool enable_borrowed_range<elements_view<T, N>> =
+//     enable_borrowed_range<T>;
+
+#include <ranges>
+#include <tuple>
+
+struct NonBorrowed : std::ranges::view_base {
+  std::tuple<int>* begin();
+  std::tuple<int>* end();
+};
+
+struct Borrowed : std::ranges::view_base {
+  std::tuple<int>* begin();
+  std::tuple<int>* end();
+};
+
+template <>
+inline constexpr bool std::ranges::enable_borrowed_range<Borrowed> = true;
+
+static_assert(!std::ranges::borrowed_range<std::ranges::elements_view<NonBorrowed, 0>>);
+static_assert(std::ranges::borrowed_range<std::ranges::elements_view<Borrowed, 0>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/ctor.default.pass.cpp
new file mode 100644
index 0000000..44a566d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/ctor.default.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// elements_view() requires default_initializable<V> = default;
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <type_traits>
+
+template <bool DefaultInitializable>
+struct View : std::ranges::view_base {
+  int i = 42;
+  constexpr explicit View()
+    requires DefaultInitializable
+  = default;
+  std::tuple<int>* begin() const;
+  std::tuple<int>* end() const;
+};
+
+
+// clang-format off
+static_assert( std::is_default_constructible_v<std::ranges::elements_view<View<true >, 0>>);
+static_assert(!std::is_default_constructible_v<std::ranges::elements_view<View<false>, 0>>);
+// clang-format on
+
+constexpr bool test() {
+  {
+    std::ranges::elements_view<View<true>, 0> ev = {};
+    assert(ev.base().i == 42);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/ctor.view.pass.cpp
new file mode 100644
index 0000000..eda9266
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/ctor.view.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit elements_view(V base);
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct View : std::ranges::view_base {
+  MoveOnly mo;
+  std::tuple<int>* begin() const;
+  std::tuple<int>* end() const;
+};
+
+// Test Explicit
+static_assert(std::is_constructible_v<std::ranges::elements_view<View, 0>, View>);
+static_assert(!std::is_convertible_v<View, std::ranges::elements_view<View, 0>>);
+
+constexpr bool test() {
+  {
+    std::ranges::elements_view<View, 0> ev{View{{}, MoveOnly{5}}};
+    assert(std::move(ev).base().mo.get() == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/end.pass.cpp
new file mode 100644
index 0000000..003ce50
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/end.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end() requires (!simple-view<V> && !common_range<V>)
+// constexpr auto end() requires (!simple-view<V> && common_range<V>)
+// constexpr auto end() const requires range<const V>
+// constexpr auto end() const requires common_range<const V>
+
+#include <cassert>
+#include <iterator>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "types.h"
+
+// | simple | common |      v.end()     | as_const(v)
+// |        |        |                  |   .end()
+// |--------|--------|------------------|---------------
+// |   Y    |   Y    |  iterator<true>  | iterator<true>
+// |   Y    |   N    |  sentinel<true>  | sentinel<true>
+// |   N    |   Y    |  iterator<false> | iterator<true>
+// |   N    |   N    |  sentinel<false> | sentinel<true>
+
+// !range<const V>
+template <class T>
+concept HasEnd = requires(T t) { t.end(); };
+
+template <class T>
+concept HasConstEnd = requires(const T ct) { ct.end(); };
+
+struct NoConstEndView : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+  constexpr std::tuple<int>* begin() { return buffer_; }
+  constexpr std::tuple<int>* end() { return buffer_ + size_; }
+};
+
+static_assert(HasEnd<std::ranges::elements_view<NoConstEndView, 0>>);
+static_assert(!HasConstEnd<std::ranges::elements_view<NoConstEndView, 0>>);
+
+constexpr bool test() {
+  std::tuple<int> buffer[] = {{1}, {2}, {3}};
+
+  // simple-view && common_view
+  {
+    SimpleCommon v{buffer};
+    auto ev = std::views::elements<0>(v);
+
+    auto it           = ev.begin();
+    decltype(auto) st = ev.end();
+    assert(st == it + 3);
+
+    auto const_it           = std::as_const(ev).begin();
+    decltype(auto) const_st = std::as_const(ev).end();
+    assert(const_st == const_it + 3);
+
+    // Both iterator<true>
+    static_assert(std::same_as<decltype(st), decltype(const_st)>);
+    static_assert(std::same_as<decltype(st), decltype(it)>);
+    static_assert(std::same_as<decltype(const_st), decltype(const_it)>);
+  }
+
+  // simple-view && !common_view
+  {
+    SimpleNonCommon v{buffer};
+    auto ev = std::views::elements<0>(v);
+
+    auto it           = ev.begin();
+    decltype(auto) st = ev.end();
+    assert(st == it + 3);
+
+    auto const_it           = std::as_const(ev).begin();
+    decltype(auto) const_st = std::as_const(ev).end();
+    assert(const_st == const_it + 3);
+
+    // Both iterator<true>
+    static_assert(std::same_as<decltype(st), decltype(const_st)>);
+    static_assert(!std::same_as<decltype(st), decltype(it)>);
+    static_assert(!std::same_as<decltype(const_st), decltype(const_it)>);
+  }
+
+  // !simple-view && common_view
+  {
+    NonSimpleCommon v{buffer};
+    auto ev = std::views::elements<0>(v);
+
+    auto it           = ev.begin();
+    decltype(auto) st = ev.end();
+    assert(st == it + 3);
+
+    auto const_it           = std::as_const(ev).begin();
+    decltype(auto) const_st = std::as_const(ev).end();
+    assert(const_st == const_it + 3);
+
+    // iterator<false> and iterator<true>
+    static_assert(!std::same_as<decltype(st), decltype(const_st)>);
+    static_assert(std::same_as<decltype(st), decltype(it)>);
+    static_assert(std::same_as<decltype(const_st), decltype(const_it)>);
+  }
+
+  // !simple-view && !common_view
+  {
+    NonSimpleNonCommon v{buffer};
+    auto ev = std::views::elements<0>(v);
+
+    auto it           = ev.begin();
+    decltype(auto) st = ev.end();
+    assert(st == it + 3);
+
+    auto const_it           = std::as_const(ev).begin();
+    decltype(auto) const_st = std::as_const(ev).end();
+    assert(const_st == const_it + 3);
+
+    // sentinel<false> and sentinel<true>
+    static_assert(!std::same_as<decltype(st), decltype(const_st)>);
+    static_assert(!std::same_as<decltype(st), decltype(it)>);
+    static_assert(!std::same_as<decltype(const_st), decltype(const_it)>);
+  }
+
+  // LWG 3406 elements_view::begin() and elements_view::end() have incompatible constraints
+  {
+    std::tuple<int, int> x[] = {{0, 0}};
+    std::ranges::subrange r  = {std::counted_iterator(x, 1), std::default_sentinel};
+    auto v                   = r | std::views::elements<0>;
+    assert(v.begin() != v.end());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/general.pass.cpp
new file mode 100644
index 0000000..78792ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/general.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how elements_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <map>
+#include <ranges>
+#include <string_view>
+#include <tuple>
+#include <utility>
+
+#include "test_iterators.h"
+
+int main(int, char**) {
+  using namespace std::string_view_literals;
+  auto historicalFigures =
+      std::map{std::pair{"Lovelace"sv, 1815}, {"Turing"sv, 1912}, {"Babbage"sv, 1791}, {"Hamilton"sv, 1936}};
+  auto expectedYears = {1791, 1936, 1815, 1912};
+
+  // views::elements<N>
+  {
+    auto names         = historicalFigures | std::views::elements<0>;
+    auto expectedNames = {"Babbage"sv, "Hamilton"sv, "Lovelace"sv, "Turing"sv};
+    assert(std::ranges::equal(names, expectedNames));
+
+    auto birth_years = historicalFigures | std::views::elements<1>;
+    assert(std::ranges::equal(birth_years, expectedYears));
+  }
+
+  // views::keys
+  {
+    auto names         = historicalFigures | std::views::keys;
+    auto expectedNames = {"Babbage"sv, "Hamilton"sv, "Lovelace"sv, "Turing"sv};
+    assert(std::ranges::equal(names, expectedNames));
+  }
+
+  // views::values
+  {
+    auto is_even = [](const auto x) { return x % 2 == 0; };
+    assert(std::ranges::count_if(historicalFigures | std::views::values, is_even) == 2);
+  }
+
+  // array
+  {
+    std::array<int, 3> arrs[] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
+    auto ev                   = arrs | std::views::elements<2>;
+    auto expected             = {3, 6, 9};
+    assert(std::ranges::equal(ev, expected));
+  }
+
+  // pair
+  {
+    std::pair<double, int> ps[] = {{1.0, 2}, {3.0, 4}, {5.0, 6}};
+    auto ev                     = ps | std::views::elements<1>;
+    auto expected               = {2, 4, 6};
+    assert(std::ranges::equal(ev, expected));
+  }
+
+  // tuple
+  {
+    std::tuple<short> tps[] = {{1}, {2}, {3}};
+    auto ev                 = tps | std::views::elements<0>;
+    auto expected           = {1, 2, 3};
+    assert(std::ranges::equal(ev, expected));
+  }
+
+  // subrange
+  {
+    int is[]       = {1, 2, 3, 4, 5, 6, 7, 8, 9};
+    using Iter     = forward_iterator<int*>;
+    using Sent     = sentinel_wrapper<Iter>;
+    using SubRange = std::ranges::subrange<Iter, Sent>;
+    SubRange sr[]  = {
+        {Iter{is}, Sent{Iter{is + 1}}},
+        {Iter{is + 2}, Sent{Iter{is + 5}}},
+        {Iter{is + 6}, Sent{Iter{is + 8}}},
+    };
+
+    auto iters = sr | std::views::elements<0>;
+    static_assert(std::is_same_v<Iter, std::ranges::range_reference_t<decltype(iters)>>);
+    auto expectedIters = {is, is + 2, is + 6};
+    assert(std::ranges::equal(iters | std::views::transform([](auto&& iter) { return base(iter); }), expectedIters));
+
+    auto sentinels = sr | std::views::elements<1>;
+    static_assert(std::is_same_v<Sent, std::ranges::range_reference_t<decltype(sentinels)>>);
+    auto expectedSentinels = {is + 1, is + 5, is + 8};
+    assert(std::ranges::equal(
+        sentinels | std::views::transform([](auto&& st) { return base(base(st)); }), expectedSentinels));
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/arithmetic.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/arithmetic.pass.cpp
new file mode 100644
index 0000000..7a4ce83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/arithmetic.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator+=(difference_type n)
+//    requires random_access_range<Base>;
+//
+// constexpr iterator& operator-=(difference_type n)
+//   requires random_access_range<Base>;
+//
+// friend constexpr iterator operator+(const iterator& x, difference_type y)
+//     requires random_access_range<Base>;
+//
+// friend constexpr iterator operator+(difference_type x, const iterator& y)
+//   requires random_access_range<Base>;
+//
+// friend constexpr iterator operator-(const iterator& x, difference_type y)
+//   requires random_access_range<Base>;
+//
+// friend constexpr difference_type operator-(const iterator& x, const iterator& y)
+//   requires sized_sentinel_for<iterator_t<Base>, iterator_t<Base>>;
+
+#include <ranges>
+
+#include <tuple>
+
+#include "test_iterators.h"
+
+template <class T, class U>
+concept CanPlus = requires(T t, U u) { t + u; };
+
+template <class T, class U>
+concept CanPlusEqual = requires(T t, U u) { t += u; };
+
+template <class T, class U>
+concept CanMinus = requires(T t, U u) { t - u; };
+
+template <class T, class U>
+concept CanMinusEqual = requires(T t, U u) { t -= u; };
+
+template <class BaseRange>
+using ElemIter = std::ranges::iterator_t<std::ranges::elements_view<BaseRange, 0>>;
+
+using RandomAccessRange = std::ranges::subrange<std::tuple<int>*>;
+static_assert(std::ranges::random_access_range<RandomAccessRange>);
+static_assert(std::sized_sentinel_for<std::ranges::iterator_t<RandomAccessRange>, //
+                                      std::ranges::iterator_t<RandomAccessRange>>);
+
+static_assert(CanPlus<ElemIter<RandomAccessRange>, int>);
+static_assert(CanPlus<int, ElemIter<RandomAccessRange>>);
+static_assert(CanPlusEqual<ElemIter<RandomAccessRange>, int>);
+static_assert(CanMinus<ElemIter<RandomAccessRange>, int>);
+static_assert(CanMinus<ElemIter<RandomAccessRange>, ElemIter<RandomAccessRange>>);
+static_assert(CanMinusEqual<ElemIter<RandomAccessRange>, int>);
+
+using BidiRange = std::ranges::subrange<bidirectional_iterator<std::tuple<int>*>>;
+static_assert(!std::ranges::random_access_range<BidiRange>);
+static_assert(!std::sized_sentinel_for<std::ranges::iterator_t<BidiRange>, //
+                                       std::ranges::iterator_t<BidiRange>>);
+
+static_assert(!CanPlus<ElemIter<BidiRange>, int>);
+static_assert(!CanPlus<int, ElemIter<BidiRange>>);
+static_assert(!CanPlusEqual<ElemIter<BidiRange>, int>);
+static_assert(!CanMinus<ElemIter<BidiRange>, int>);
+static_assert(!CanMinus<ElemIter<BidiRange>, ElemIter<BidiRange>>);
+static_assert(!CanMinusEqual<ElemIter<BidiRange>, int>);
+
+constexpr bool test() {
+  std::tuple<int> ts[] = {{1}, {2}, {3}, {4}};
+
+  RandomAccessRange r{&ts[0], &ts[0] + 4};
+  auto ev = r | std::views::elements<0>;
+  {
+    // operator+(x, n) operator+(n,x) and operator+=
+    auto it1 = ev.begin();
+
+    auto it2 = it1 + 3;
+    assert(it2.base() == &ts[3]);
+
+    auto it3 = 3 + it1;
+    assert(it3.base() == &ts[3]);
+
+    it1 += 3;
+    assert(it1 == it2);
+    assert(it1.base() == &ts[3]);
+  }
+
+  {
+    // operator-(x, n) and operator-=
+    auto it1 = ev.end();
+
+    auto it2 = it1 - 3;
+    assert(it2.base() == &ts[1]);
+
+    it1 -= 3;
+    assert(it1 == it2);
+    assert(it1.base() == &ts[1]);
+  }
+
+  {
+    // operator-(x, y)
+    assert((ev.end() - ev.begin()) == 4);
+
+    auto it1 = ev.begin() + 2;
+    auto it2 = ev.end() - 1;
+    assert((it1 - it2) == -1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/base.pass.cpp
new file mode 100644
index 0000000..3729c8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/base.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr const iterator_t<Base>& base() const & noexcept;
+// constexpr iterator_t<Base> base() &&;
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "../types.h"
+
+// Test Noexcept
+template <class T>
+concept IsBaseNoexcept =
+    requires {
+      { std::declval<T>().base() } noexcept;
+    };
+
+using BaseView     = std::ranges::subrange<std::tuple<int>*>;
+using ElementsIter = std::ranges::iterator_t<std::ranges::elements_view<BaseView, 0>>;
+
+static_assert(IsBaseNoexcept<const ElementsIter&>);
+static_assert(IsBaseNoexcept<ElementsIter&>);
+static_assert(IsBaseNoexcept<const ElementsIter&&>);
+static_assert(!IsBaseNoexcept<ElementsIter&&>);
+
+constexpr bool test() {
+  std::tuple<int> t{5};
+
+  // const &
+  {
+    const ElementsIter it{&t};
+    decltype(auto) base = it.base();
+    static_assert(std::is_same_v<decltype(base), std::tuple<int>* const&>);
+    assert(base == &t);
+  }
+
+  // &
+  {
+    ElementsIter it{&t};
+    decltype(auto) base = it.base();
+    static_assert(std::is_same_v<decltype(base), std::tuple<int>* const&>);
+    assert(base == &t);
+  }
+
+  // &&
+  {
+    ElementsIter it{&t};
+    decltype(auto) base = std::move(it).base();
+    static_assert(std::is_same_v<decltype(base), std::tuple<int>*>);
+    assert(base == &t);
+  }
+
+  // const &&
+  {
+    const ElementsIter it{&t};
+    decltype(auto) base = std::move(it).base();
+    static_assert(std::is_same_v<decltype(base), std::tuple<int>* const&>);
+    assert(base == &t);
+  }
+
+  // move only
+  {
+    struct MoveOnlyIter : IterBase<MoveOnlyIter> {
+      MoveOnly mo;
+    };
+    struct Sent {
+      constexpr bool operator==(const MoveOnlyIter&) const { return true; }
+    };
+
+    using MoveOnlyElemIter =
+        std::ranges::iterator_t<std::ranges::elements_view<std::ranges::subrange<MoveOnlyIter, Sent>, 0>>;
+
+    MoveOnlyElemIter it{MoveOnlyIter{{}, MoveOnly{5}}};
+    decltype(auto) base = std::move(it).base();
+    static_assert(std::is_same_v<decltype(base), MoveOnlyIter>);
+    assert(base.mo.get() == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/compare.pass.cpp
new file mode 100644
index 0000000..16df3e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/compare.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const iterator& x, const iterator& y)
+//   requires equality_comparable<iterator_t<Base>>;
+// friend constexpr bool operator<(const iterator& x, const iterator& y)
+//   requires random_access_range<Base>;
+// friend constexpr bool operator>(const iterator& x, const iterator& y)
+//   requires random_access_range<Base>;
+// friend constexpr bool operator<=(const iterator& x, const iterator& y)
+//   requires random_access_range<Base>;
+// friend constexpr bool operator>=(const iterator& x, const iterator& y)
+//   requires random_access_range<Base>;
+// friend constexpr auto operator<=>(const iterator& x, const iterator& y)
+//   requires random_access_range<Base> && three_way_comparable<iterator_t<Base>>;
+
+#include <compare>
+#include <functional>
+#include <ranges>
+#include <tuple>
+
+#include "test_iterators.h"
+
+constexpr void compareOperatorTest(const auto& iter1, const auto& iter2) {
+  assert(!(iter1 < iter1));
+  assert(iter1 < iter2);
+  assert(!(iter2 < iter1));
+
+  assert(iter1 <= iter1);
+  assert(iter1 <= iter2);
+  assert(!(iter2 <= iter1));
+
+  assert(!(iter1 > iter1));
+  assert(!(iter1 > iter2));
+  assert(iter2 > iter1);
+
+  assert(iter1 >= iter1);
+  assert(!(iter1 >= iter2));
+  assert(iter2 >= iter1);
+
+  assert(iter1 == iter1);
+  assert(!(iter1 == iter2));
+  assert(iter2 == iter2);
+
+  assert(!(iter1 != iter1));
+  assert(iter1 != iter2);
+  assert(!(iter2 != iter2));
+}
+
+constexpr void inequalityOperatorsDoNotExistTest(const auto& iter1, const auto& iter2) {
+  using Iter1 = decltype(iter1);
+  using Iter2 = decltype(iter2);
+  static_assert(!std::is_invocable_v<std::less<>, Iter1, Iter2>);
+  static_assert(!std::is_invocable_v<std::less_equal<>, Iter1, Iter2>);
+  static_assert(!std::is_invocable_v<std::greater<>, Iter1, Iter2>);
+  static_assert(!std::is_invocable_v<std::greater_equal<>, Iter1, Iter2>);
+}
+
+constexpr bool test() {
+  std::tuple<int> ts[] = {{1}, {2}, {3}};
+
+  {
+    // Test a new-school iterator with operator<=>; the iterator should also have operator<=>.
+    using It       = three_way_contiguous_iterator<std::tuple<int>*>;
+    using Subrange = std::ranges::subrange<It>;
+    static_assert(std::three_way_comparable<It>);
+    using R = std::ranges::elements_view<Subrange, 0>;
+    static_assert(std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    auto ev    = Subrange{It{&ts[0]}, It{&ts[0] + 3}} | std::views::elements<0>;
+    auto iter1 = ev.begin();
+    auto iter2 = iter1 + 1;
+
+    compareOperatorTest(iter1, iter2);
+
+    assert((iter1 <=> iter2) == std::strong_ordering::less);
+    assert((iter1 <=> iter1) == std::strong_ordering::equal);
+    assert((iter2 <=> iter1) == std::strong_ordering::greater);
+  }
+
+  {
+    // Test an old-school iterator with no operator<=>; the elements view iterator shouldn't have
+    // operator<=> either.
+    using It       = random_access_iterator<std::tuple<int>*>;
+    using Subrange = std::ranges::subrange<It>;
+    static_assert(!std::three_way_comparable<It>);
+    using R = std::ranges::elements_view<Subrange, 0>;
+    static_assert(!std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    auto ev    = Subrange{It{&ts[0]}, It{&ts[0] + 3}} | std::views::elements<0>;
+    auto iter1 = ev.begin();
+    auto iter2 = iter1 + 1;
+
+    compareOperatorTest(iter1, iter2);
+  }
+
+  {
+    // non random_access_range
+    using It       = bidirectional_iterator<std::tuple<int>*>;
+    using Subrange = std::ranges::subrange<It>;
+    static_assert(!std::ranges::random_access_range<Subrange>);
+    using R = std::ranges::elements_view<Subrange, 0>;
+    static_assert(!std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    auto ev = Subrange{It{&ts[0]}, It{&ts[0] + 1}} | std::views::elements<0>;
+
+    auto it1 = ev.begin();
+    auto it2 = ev.end();
+
+    assert(it1 == it1);
+    assert(!(it1 != it1));
+    assert(it2 == it2);
+    assert(!(it2 != it2));
+
+    assert(it1 != it2);
+
+    ++it1;
+    assert(it1 == it2);
+
+    inequalityOperatorsDoNotExistTest(it1, it2);
+  }
+
+  {
+    // underlying iterator does not support ==
+    using Iter     = cpp20_input_iterator<std::tuple<int>*>;
+    using Sent     = sentinel_wrapper<Iter>;
+    using Subrange = std::ranges::subrange<Iter, Sent>;
+    using R        = std::ranges::elements_view<Subrange, 0>;
+    static_assert(!std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    auto ev = Subrange{Iter{&ts[0]}, Sent{Iter{&ts[0] + 1}}} | std::views::elements<0>;
+    auto it = ev.begin();
+
+    using ElemIter = decltype(it);
+    static_assert(!std::invocable<std::equal_to<>, ElemIter, ElemIter>);
+    static_assert(!std::invocable<std::not_equal_to<>, ElemIter, ElemIter>);
+    inequalityOperatorsDoNotExistTest(it, it);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.base.pass.cpp
new file mode 100644
index 0000000..5a280d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.base.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit iterator(iterator_t<Base> current);
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+#include "../types.h"
+
+// Test explicit
+using BaseIter     = std::tuple<int>*;
+using ElementsIter = std::ranges::iterator_t<std::ranges::elements_view<std::ranges::subrange<BaseIter, BaseIter>, 0>>;
+
+static_assert(std::is_constructible_v<ElementsIter, BaseIter>);
+static_assert(!std::is_convertible_v<BaseIter, ElementsIter>);
+
+struct TracedMoveIter : IterBase<TracedMoveIter>{
+  bool moved = false;
+
+  constexpr TracedMoveIter()                      = default;
+  constexpr TracedMoveIter(const TracedMoveIter&) = default;
+  constexpr TracedMoveIter(TracedMoveIter&&) : moved{true} {}
+  constexpr TracedMoveIter& operator=(TracedMoveIter&&)      = default;
+  constexpr TracedMoveIter& operator=(const TracedMoveIter&) = default;
+};
+
+struct TracedMoveView : std::ranges::view_base {
+  TracedMoveIter begin() const;
+  TracedMoveIter end() const;
+};
+
+constexpr bool test() {
+  using Iter = std::ranges::iterator_t<std::ranges::elements_view<TracedMoveView, 0>>;
+  Iter iter{TracedMoveIter{}};
+  assert(iter.base().moved);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.default.pass.cpp
new file mode 100644
index 0000000..62aa9b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.default.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator() requires default_initializable<iterator_t<Base>> = default;
+
+#include <ranges>
+#include <tuple>
+
+#include "../types.h"
+
+struct PODIter : IterBase<PODIter> {
+  int i; // deliberately uninitialised
+};
+
+struct IterDefaultCtrView : std::ranges::view_base {
+  PODIter begin() const;
+  PODIter end() const;
+};
+
+struct IterNoDefaultCtrView : std::ranges::view_base {
+  cpp20_input_iterator<std::tuple<int>*> begin() const;
+  sentinel_wrapper<cpp20_input_iterator<std::tuple<int>*>> end() const;
+};
+
+template <class View, size_t N>
+using ElementsIter = std::ranges::iterator_t<std::ranges::elements_view<View, N>>;
+
+static_assert(!std::default_initializable<ElementsIter<IterNoDefaultCtrView, 0>>);
+static_assert(std::default_initializable<ElementsIter<IterDefaultCtrView, 0>>);
+
+constexpr bool test() {
+  using Iter = ElementsIter<IterDefaultCtrView, 0>;
+  {
+    Iter iter;
+    assert(iter.base().i == 0); // PODIter has to be initialised to have value 0
+  }
+
+  {
+    Iter iter = {};
+    assert(iter.base().i == 0); // PODIter has to be initialised to have value 0
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.other.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.other.pass.cpp
new file mode 100644
index 0000000..6756474
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/ctor.other.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator(iterator<!Const> i)
+//   requires Const && convertible_to<iterator_t<V>, iterator_t<Base>>;
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+#include "../types.h"
+
+template <bool Const>
+struct ConvertibleIter : IterBase<ConvertibleIter<Const>> {
+  using iterator_category = std::random_access_iterator_tag;
+  using value_type        = std::tuple<int>;
+  using difference_type   = intptr_t;
+
+  bool movedFromOtherConst = false;
+  int i                    = 0;
+
+  constexpr ConvertibleIter() = default;
+  constexpr ConvertibleIter(int ii) : i(ii) {}
+  template <bool otherConst>
+    requires(Const != otherConst)
+  constexpr ConvertibleIter(ConvertibleIter<otherConst> it) : movedFromOtherConst(true), i(it.i) {}
+};
+
+template <class Iter, class ConstIter>
+struct BasicView : std::ranges::view_base {
+  Iter begin();
+  Iter end();
+
+  ConstIter begin() const;
+  ConstIter end() const;
+};
+
+template <class View>
+using ElemIter = std::ranges::iterator_t<std::ranges::elements_view<View, 0>>;
+
+template <class View>
+using ConstElemIter = std::ranges::iterator_t<const std::ranges::elements_view<View, 0>>;
+
+using ConvertibleView    = BasicView<ConvertibleIter<false>, ConvertibleIter<true>>;
+using NonConvertibleView = BasicView<forward_iterator<std::tuple<int>*>, bidirectional_iterator<std::tuple<int>*>>;
+
+static_assert(std::is_constructible_v<ConstElemIter<ConvertibleView>, ElemIter<ConvertibleView>>);
+static_assert(!std::is_constructible_v<ElemIter<ConvertibleView>, ConstElemIter<ConvertibleView>>);
+static_assert(!std::is_constructible_v<ConstElemIter<NonConvertibleView>, ElemIter<NonConvertibleView>>);
+static_assert(!std::is_constructible_v<ElemIter<NonConvertibleView>, ConstElemIter<NonConvertibleView>>);
+
+constexpr bool test() {
+  ElemIter<ConvertibleView> iter{ConvertibleIter<false>{5}};
+  ConstElemIter<ConvertibleView> constIter = iter; // implicit
+  assert(constIter.base().movedFromOtherConst);
+  assert(constIter.base().i == 5);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/decrement.pass.cpp
new file mode 100644
index 0000000..f0bed5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/decrement.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator--() requires bidirectional_range<Base>;
+// constexpr iterator operator--(int) requires bidirectional_range<Base>;
+
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+#include "test_iterators.h"
+
+template <class Iter>
+concept CanPreDecrement = requires(Iter it) { --it; };
+
+template <class Iter>
+concept CanPostDecrement = requires(Iter it) { it--; };
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+constexpr void testOne() {
+  using Range          = std::ranges::subrange<Iter, Sent>;
+  std::tuple<int> ts[] = {{1}, {2}, {3}};
+  auto ev              = Range{Iter{&ts[0]}, Sent{Iter{&ts[0] + 3}}} | std::views::elements<0>;
+
+  using ElementIter = std::ranges::iterator_t<decltype(ev)>;
+
+  if constexpr (!std::bidirectional_iterator<Iter>) {
+    auto it = ev.begin();
+    static_assert(!CanPreDecrement<decltype(it)>);
+    static_assert(!CanPostDecrement<decltype(it)>);
+  } else {
+    // --i
+    {
+      auto it = ev.begin();
+      static_assert(CanPreDecrement<decltype(it)>);
+
+      ++it;
+      assert(base(it.base()) == &ts[1]);
+
+      decltype(auto) result = --it;
+
+      static_assert(std::is_same_v<decltype(result), ElementIter&>);
+      assert(&result == &it);
+
+      assert(base(it.base()) == &ts[0]);
+    }
+
+    // i--
+    {
+      auto it = ev.begin();
+      static_assert(CanPostDecrement<decltype(it)>);
+
+      ++it;
+      assert(base(it.base()) == &ts[1]);
+
+      decltype(auto) result = it--;
+
+      static_assert(std::is_same_v<decltype(result), ElementIter>);
+
+      assert(base(it.base()) == &ts[0]);
+      assert(base(result.base()) == &ts[1]);
+    }
+  }
+}
+
+constexpr bool test() {
+  using Ptr = std::tuple<int>*;
+  testOne<cpp20_input_iterator<Ptr>>();
+  testOne<forward_iterator<Ptr>>();
+  testOne<bidirectional_iterator<Ptr>>();
+  testOne<random_access_iterator<Ptr>>();
+  testOne<contiguous_iterator<Ptr>>();
+  testOne<Ptr>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/deref.pass.cpp
new file mode 100644
index 0000000..d87a3e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/deref.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr decltype(auto) operator*() const;
+
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <utility>
+
+template <std::size_t N, class T, std::size_t Size>
+constexpr void testReference(T (&ts)[Size]) {
+  auto ev = ts | std::views::elements<N>;
+  auto it = ev.begin();
+
+  decltype(auto) result = *it;
+  using ExpectedType    = decltype(std::get<N>(ts[0]));
+  static_assert(std::is_same_v<decltype(result), ExpectedType>);
+
+  if constexpr (std::is_reference_v<ExpectedType>) {
+    // tuple/array/pair
+    assert(&result == &std::get<N>(ts[0]));
+  } else {
+    // subrange
+    assert(result == std::get<N>(ts[0]));
+  }
+}
+
+// LWG 3502 elements_view should not be allowed to return dangling references
+template <std::size_t N, class T>
+constexpr void testValue(T t) {
+  auto ev = std::views::iota(0, 1) | std::views::transform([&t](int) { return t; }) | std::views::elements<N>;
+  auto it = ev.begin();
+
+  decltype(auto) result = *it;
+  using ExpectedType    = std::remove_cvref_t<decltype(std::get<N>(t))>;
+  static_assert(std::is_same_v<decltype(result), ExpectedType>);
+
+  assert(result == std::get<N>(t));
+}
+
+constexpr bool test() {
+  // test tuple
+  {
+    std::tuple<int, short, long> ts[] = {{1, 2, 3}, {4, 5, 6}};
+    testReference<0>(ts);
+    testReference<1>(ts);
+    testReference<2>(ts);
+    testValue<0>(ts[0]);
+    testValue<1>(ts[0]);
+    testValue<2>(ts[0]);
+  }
+
+  // test pair
+  {
+    std::pair<int, short> ps[] = {{1, 2}, {4, 5}};
+    testReference<0>(ps);
+    testReference<1>(ps);
+    testValue<0>(ps[0]);
+    testValue<1>(ps[0]);
+  }
+
+  // test array
+  {
+    std::array<int, 3> arrs[] = {{1, 2, 3}, {3, 4, 5}};
+    testReference<0>(arrs);
+    testReference<1>(arrs);
+    testReference<2>(arrs);
+    testValue<0>(arrs[0]);
+    testValue<1>(arrs[0]);
+    testValue<2>(arrs[0]);
+  }
+
+  // test subrange
+  {
+    int i                             = 5;
+    std::ranges::subrange<int*> srs[] = {{&i, &i}, {&i, &i}};
+    testReference<0>(srs);
+    testReference<1>(srs);
+    testValue<0>(srs[0]);
+    testValue<1>(srs[0]);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/increment.pass.cpp
new file mode 100644
index 0000000..6b29ba0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/increment.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator++();
+// constexpr void operator++(int);
+// constexpr iterator operator++(int) requires forward_range<Base>;
+
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+#include "test_iterators.h"
+
+template <class Iter, class Sent = sentinel_wrapper<Iter>>
+constexpr void testOne() {
+  using Range          = std::ranges::subrange<Iter, Sent>;
+  std::tuple<int> ts[] = {{1}, {2}, {3}};
+  auto ev              = Range{Iter{&ts[0]}, Sent{Iter{&ts[0] + 3}}} | std::views::elements<0>;
+
+  using ElementIter = std::ranges::iterator_t<decltype(ev)>;
+
+  // ++i
+  {
+    auto it               = ev.begin();
+    decltype(auto) result = ++it;
+
+    static_assert(std::is_same_v<decltype(result), ElementIter&>);
+    assert(&result == &it);
+
+    assert(base(it.base()) == &ts[1]);
+  }
+
+  // i++
+  {
+    if constexpr (std::forward_iterator<Iter>) {
+      auto it               = ev.begin();
+      decltype(auto) result = it++;
+
+      static_assert(std::is_same_v<decltype(result), ElementIter>);
+
+      assert(base(it.base()) == &ts[1]);
+      assert(base(result.base()) == &ts[0]);
+    } else {
+      auto it = ev.begin();
+      it++;
+
+      static_assert(std::is_same_v<decltype(it++), void>);
+      assert(base(it.base()) == &ts[1]);
+    }
+  }
+}
+
+constexpr bool test() {
+  using Ptr = std::tuple<int>*;
+  testOne<cpp20_input_iterator<Ptr>>();
+  testOne<forward_iterator<Ptr>>();
+  testOne<bidirectional_iterator<Ptr>>();
+  testOne<random_access_iterator<Ptr>>();
+  testOne<contiguous_iterator<Ptr>>();
+  testOne<Ptr>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/member_types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/member_types.compile.pass.cpp
new file mode 100644
index 0000000..67ec179
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/member_types.compile.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Member typedefs in elements_view<V, N>::iterator.
+
+#include <concepts>
+#include <ranges>
+#include <tuple>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter>
+using Range = std::ranges::subrange<Iter, sentinel_wrapper<Iter>>;
+
+template <class Range, size_t N = 0>
+using ElementsIter = std::ranges::iterator_t<std::ranges::elements_view<Range, N>>;
+
+// using iterator_concept = see below;
+static_assert(std::same_as<ElementsIter<Range<cpp20_input_iterator<std::tuple<int>*>>>::iterator_concept,
+                           std::input_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<forward_iterator<std::tuple<int>*>>>::iterator_concept, //
+                           std::forward_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<bidirectional_iterator<std::tuple<int>*>>>::iterator_concept,
+                           std::bidirectional_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<random_access_iterator<std::tuple<int>*>>>::iterator_concept,
+                           std::random_access_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<contiguous_iterator<std::tuple<int>*>>>::iterator_concept,
+                           std::random_access_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<std::tuple<int>*>>::iterator_concept, //
+                           std::random_access_iterator_tag>);
+
+// using iterator_category = see below;   // not always present
+template <class T>
+concept HasIterCategory = requires { typename T::iterator_category; };
+
+static_assert(!HasIterCategory<ElementsIter<Range<cpp20_input_iterator<std::tuple<int>*>>>>);
+static_assert(HasIterCategory<ElementsIter<Range<forward_iterator<std::tuple<int>*>>>>);
+
+static_assert(std::same_as<ElementsIter<Range<forward_iterator<std::tuple<int>*>>>::iterator_category,
+                           std::forward_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<bidirectional_iterator<std::tuple<int>*>>>::iterator_category,
+                           std::bidirectional_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<random_access_iterator<std::tuple<int>*>>>::iterator_category,
+                           std::random_access_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<contiguous_iterator<std::tuple<int>*>>>::iterator_category,
+                           std::random_access_iterator_tag>);
+
+static_assert(std::same_as<ElementsIter<Range<std::tuple<int>*>>::iterator_category, //
+                           std::random_access_iterator_tag>);
+
+using Generator = decltype(std::views::iota(0, 1) | std::views::transform([](int) {
+                             return std::pair<int, short>{1, 1};
+                           }));
+static_assert(std::ranges::random_access_range<Generator>);
+
+static_assert(std::same_as<ElementsIter<Generator>::iterator_category, //
+                           std::input_iterator_tag>);
+
+// using value_type = remove_cvref_t<tuple_element_t<N, range_value_t<Base>>>;
+static_assert(std::same_as<ElementsIter<Range<std::tuple<int, long>*>, 0>::value_type, int>);
+
+static_assert(std::same_as<ElementsIter<Range<std::tuple<int, long>*>, 1>::value_type, long>);
+
+static_assert(std::same_as<ElementsIter<Generator, 0>::value_type, int>);
+
+static_assert(std::same_as<ElementsIter<Generator, 1>::value_type, short>);
+
+// using difference_type = range_difference_t<Base>;
+static_assert(std::same_as<ElementsIter<Range<std::tuple<int, long>*>>::difference_type,
+                           std::ranges::range_difference_t<Range<std::tuple<int, long>*>>>);
+
+static_assert(std::same_as<ElementsIter<Generator>::difference_type, //
+                           std::ranges::range_difference_t<Generator>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/subscript.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/subscript.pass.cpp
new file mode 100644
index 0000000..e456ead
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/iterator/subscript.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr decltype(auto) operator[](difference_type n) const
+//   requires random_access_range<Base>
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+#include "test_iterators.h"
+
+template <class T, class U>
+concept CanSubscript = requires(T t, U u) { t[u]; };
+
+template <class BaseRange>
+using ElemIter = std::ranges::iterator_t<std::ranges::elements_view<BaseRange, 0>>;
+
+using RandomAccessRange = std::ranges::subrange<std::tuple<int>*>;
+static_assert(std::ranges::random_access_range<RandomAccessRange>);
+
+static_assert(CanSubscript<ElemIter<RandomAccessRange>, int>);
+
+using BidiRange = std::ranges::subrange<bidirectional_iterator<std::tuple<int>*>>;
+static_assert(!std::ranges::random_access_range<BidiRange>);
+
+static_assert(!CanSubscript<ElemIter<BidiRange>, int>);
+
+constexpr bool test() {
+  {
+    // reference
+    std::tuple<int> ts[] = {{1}, {2}, {3}, {4}};
+    auto ev              = ts | std::views::elements<0>;
+    auto it              = ev.begin();
+
+    assert(&it[0] == &*it);
+    assert(&it[2] == &*(it + 2));
+
+    static_assert(std::is_same_v<decltype(it[2]), int&>);
+  }
+
+  {
+    // value
+    auto ev = std::views::iota(0, 5) | std::views::transform([](int i) { return std::tuple<int>{i}; }) |
+              std::views::elements<0>;
+    auto it = ev.begin();
+    assert(it[0] == *it);
+    assert(it[2] == *(it + 2));
+    assert(it[4] == *(it + 4));
+
+    static_assert(std::is_same_v<decltype(it[2]), int>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/range.concept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/range.concept.compile.pass.cpp
new file mode 100644
index 0000000..021f028
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/range.concept.compile.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// concept checking
+//
+// template<class T, size_t N>
+// concept has-tuple-element =
+//   tuple-like<T> && N < tuple_size_v<T>;
+//
+// template<class T, size_t N>
+// concept returnable-element =
+//   is_reference_v<T> || move_constructible<tuple_element_t<N, T>>;
+//
+// template<input_range V, size_t N>
+//   requires view<V> && has-tuple-element<range_value_t<V>, N> &&
+//            has-tuple-element<remove_reference_t<range_reference_t<V>>, N> &&
+//            returnable-element<range_reference_t<V>, N>
+// class elements_view;
+
+#include <array>
+#include <concepts>
+#include <tuple>
+#include <ranges>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <class It>
+using Range = std::ranges::subrange<It, sentinel_wrapper<It>>;
+
+template <class V, size_t N>
+concept HasElementsView = requires { typename std::ranges::elements_view<V, N>; };
+
+static_assert(HasElementsView<Range<std::ranges::subrange<int*>*>, 0>);
+static_assert(HasElementsView<Range<std::pair<int, int>*>, 1>);
+static_assert(HasElementsView<Range<std::tuple<int, int, int>*>, 2>);
+static_assert(HasElementsView<Range<std::array<int, 4>*>, 3>);
+
+// !view<V>
+static_assert(!std::ranges::view<std::array<std::tuple<int>, 1>>);
+static_assert(!HasElementsView<std::array<std::tuple<int>, 1>, 0>);
+
+// !input_range
+static_assert(!std::ranges::input_range<Range<cpp20_output_iterator<std::tuple<int>*>>>);
+static_assert(!HasElementsView<Range<cpp20_output_iterator<std::tuple<int>*>>, 0>);
+
+// !tuple-like
+LIBCPP_STATIC_ASSERT(!std::__tuple_like<int>);
+static_assert(!HasElementsView<Range<int*>, 1>);
+
+// !(N < tuple_size_v<T>)
+static_assert(!(2 < std::tuple_size_v< std::pair<int, int>>));
+static_assert(!HasElementsView<Range<std::pair<int, int>*>, 2>);
+
+// ! (is_reference_v<T> || move_constructible<tuple_element_t<N, T>>)
+struct NonMovable {
+  NonMovable(int) {}
+  NonMovable(NonMovable&&) = delete;
+};
+static_assert(!std::move_constructible<NonMovable>);
+
+using NonMovableGenerator =
+    decltype(std::views::iota(0, 1) | std::views::transform([](int) {
+               return std::pair<NonMovable, int>{1, 1};
+             }));
+
+static_assert(!HasElementsView<NonMovableGenerator, 0>);
+static_assert(HasElementsView<NonMovableGenerator, 1>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/base.pass.cpp
new file mode 100644
index 0000000..d4d0156
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/base.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr sentinel_t<Base> base() const;
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+struct Sent {
+  int i;
+
+  friend constexpr bool operator==(std::tuple<int>*, const Sent&) { return true; }
+};
+
+constexpr bool test() {
+  using BaseRange = std::ranges::subrange<std::tuple<int>*, Sent>;
+  using EleRange  = std::ranges::elements_view<BaseRange, 0>;
+  using EleSent   = std::ranges::sentinel_t<EleRange>;
+
+  const EleSent st{Sent{5}};
+  std::same_as<Sent> decltype(auto) base = st.base();
+  assert(base.i == 5);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.base.pass.cpp
new file mode 100644
index 0000000..13fef1d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.base.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit sentinel(sentinel_t<Base> end);
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <utility>
+
+struct Sent {
+  int i;
+
+  friend constexpr bool operator==(std::tuple<int>*, const Sent&) { return true; }
+};
+
+struct Range : std::ranges::view_base {
+  std::tuple<int>* begin() const;
+  Sent end();
+};
+
+// Test explicit
+
+static_assert(std::is_constructible_v<std::ranges::sentinel_t<std::ranges::elements_view<Range, 0>>, Sent>);
+static_assert(!std::is_convertible_v<Sent, std::ranges::sentinel_t<std::ranges::elements_view<Range, 0>>>);
+
+constexpr bool test() {
+  // base is init correctly
+  {
+    using R        = std::ranges::elements_view<Range, 0>;
+    using Sentinel = std::ranges::sentinel_t<R>;
+
+    Sentinel s1(Sent{5});
+    assert(s1.base().i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.convert.pass.cpp
new file mode 100644
index 0000000..4ff65be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.convert.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr sentinel(sentinel<!Const> s)
+//   requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+#include "../types.h"
+
+struct Sent {
+  int i;
+  constexpr Sent() = default;
+  constexpr Sent(int ii) : i(ii) {}
+  friend constexpr bool operator==(std::tuple<int>*, const Sent&) { return true; }
+};
+
+struct ConstSent {
+  int i;
+  constexpr ConstSent() = default;
+  constexpr ConstSent(int ii) : i(ii) {}
+  constexpr ConstSent(const Sent& s) : i(s.i) {}
+  friend constexpr bool operator==(std::tuple<int>*, const ConstSent&) { return true; }
+};
+
+struct Range : std::ranges::view_base {
+  std::tuple<int>* begin() const;
+  Sent end();
+  ConstSent end() const;
+};
+
+struct NonConvertConstSent {
+  int i;
+  constexpr NonConvertConstSent() = default;
+  constexpr NonConvertConstSent(int ii) : i(ii) {}
+  friend constexpr bool operator==(std::tuple<int>*, const NonConvertConstSent&) { return true; }
+};
+
+struct NonConvertConstSentRange : std::ranges::view_base {
+  std::tuple<int>* begin() const;
+  Sent end();
+  NonConvertConstSent end() const;
+};
+
+// Test Constraint
+static_assert(std::is_constructible_v<std::ranges::sentinel_t<const std::ranges::elements_view<Range, 0>>,
+                                      std::ranges::sentinel_t<std::ranges::elements_view<Range, 0>>>);
+
+// !Const
+static_assert(!std::is_constructible_v<std::ranges::sentinel_t<std::ranges::elements_view<Range, 0>>,
+                                       std::ranges::sentinel_t<const std::ranges::elements_view<Range, 0>>>);
+
+// !convertible_to<sentinel_t<V>, sentinel_t<Base>>
+static_assert(!std::is_constructible_v<
+              std::ranges::sentinel_t<const std::ranges::elements_view<NonConvertConstSentRange, 0>>,
+              std::ranges::sentinel_t<std::ranges::elements_view<NonConvertConstSentRange, 0>>>);
+
+constexpr bool test() {
+  // base is init correctly
+  {
+    using R             = std::ranges::elements_view<Range, 0>;
+    using Sentinel      = std::ranges::sentinel_t<R>;
+    using ConstSentinel = std::ranges::sentinel_t<const R>;
+    static_assert(!std::same_as<Sentinel, ConstSentinel>);
+
+    Sentinel s1(Sent{5});
+    ConstSentinel s2 = s1;
+    assert(s2.base().i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..b2f4eae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/ctor.default.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+
+struct PODSentinel {
+  int i; // deliberately uninitialised
+
+  friend constexpr bool operator==(std::tuple<int>*, const PODSentinel&) { return true; }
+};
+
+struct Range : std::ranges::view_base {
+  std::tuple<int>* begin() const;
+  PODSentinel end();
+};
+
+constexpr bool test() {
+  using EleView  = std::ranges::elements_view<Range, 0>;
+  using Sentinel = std::ranges::sentinel_t<EleView>;
+  static_assert(!std::is_same_v<Sentinel, std::ranges::iterator_t<EleView>>);
+
+  {
+    Sentinel s;
+    assert(s.base().i == 0);
+  }
+  {
+    Sentinel s = {};
+    assert(s.base().i == 0);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/equality.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/equality.pass.cpp
new file mode 100644
index 0000000..55477cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/equality.pass.cpp
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  template<bool OtherConst>
+//    requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>>
+//  friend constexpr bool operator==(const iterator<OtherConst>& x, const sentinel& y);
+
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+template <bool Const>
+struct Iter {
+  std::tuple<int>* it_;
+
+  using value_type       = std::tuple<int>;
+  using difference_type  = intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  constexpr decltype(auto) operator*() const { return *it_; }
+  constexpr Iter& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++it_; }
+};
+
+template <bool Const>
+struct Sent {
+  std::tuple<int>* end_;
+
+  constexpr bool operator==(const Iter<Const>& i) const { return i.it_ == end_; }
+};
+
+template <bool Const>
+struct CrossComparableSent {
+  std::tuple<int>* end_;
+
+  template <bool C>
+  constexpr bool operator==(const Iter<C>& i) const {
+    return i.it_ == end_;
+  }
+};
+
+template <template <bool> typename St>
+struct Range : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+  constexpr Iter<false> begin() { return Iter<false>{buffer_}; }
+  constexpr Iter<true> begin() const { return Iter<true>{buffer_}; }
+  constexpr St<false> end() { return St<false>{buffer_ + size_}; }
+  constexpr St<true> end() const { return St<true>{buffer_ + size_}; }
+};
+
+using R                = Range<Sent>;
+using CrossComparableR = Range<CrossComparableSent>;
+
+// Test Constraint
+template <class I, class S>
+concept HasEqual = requires(const I i, const S s) { i == s; };
+
+using std::ranges::elements_view;
+using std::ranges::iterator_t;
+using std::ranges::sentinel_t;
+
+static_assert(HasEqual<iterator_t<elements_view<R, 0>>, //
+                       sentinel_t<elements_view<R, 0>>>);
+
+static_assert(!HasEqual<iterator_t<const elements_view<R, 0>>, //
+                        sentinel_t<elements_view<R, 0>>>);
+
+static_assert(!HasEqual<iterator_t<elements_view<R, 0>>, //
+                        sentinel_t<const elements_view<R, 0>>>);
+
+static_assert(HasEqual<iterator_t<const elements_view<R, 0>>, //
+                       sentinel_t<const elements_view<R, 0>>>);
+
+static_assert(HasEqual<iterator_t<elements_view<R, 0>>, //
+                       sentinel_t<elements_view<R, 0>>>);
+
+static_assert(HasEqual<iterator_t<const elements_view<CrossComparableR, 0>>, //
+                       sentinel_t<elements_view<CrossComparableR, 0>>>);
+
+static_assert(HasEqual<iterator_t<elements_view<CrossComparableR, 0>>, //
+                       sentinel_t<const elements_view<CrossComparableR, 0>>>);
+
+static_assert(HasEqual<iterator_t<const elements_view<CrossComparableR, 0>>, //
+                       sentinel_t<const elements_view<CrossComparableR, 0>>>);
+
+template <class R, bool ConstIter, bool ConstSent>
+constexpr void testOne() {
+  auto getBegin = [](auto&& rng) {
+    if constexpr (ConstIter) {
+      return std::as_const(rng).begin();
+    } else {
+      return rng.begin();
+    }
+  };
+
+  auto getEnd = [](auto&& rng) {
+    if constexpr (ConstSent) {
+      return std::as_const(rng).end();
+    } else {
+      return rng.end();
+    }
+  };
+
+  // iter == sentinel.base
+  {
+    std::tuple<int> buffer[] = {{1}};
+    R v{buffer};
+    std::ranges::elements_view<R, 0> ev(v);
+    auto iter = getBegin(ev);
+    auto st   = getEnd(ev);
+    ++iter;
+    assert(iter == st);
+  }
+
+  // iter != sentinel.base
+  {
+    std::tuple<int> buffer[] = {{1}};
+    R v{buffer};
+    std::ranges::elements_view<R, 0> ev(v);
+    auto iter = getBegin(ev);
+    auto st   = getEnd(ev);
+    assert(iter != st);
+  }
+
+  // empty range
+  {
+    std::array<std::tuple<int>, 0> arr;
+    R v{arr};
+    std::ranges::elements_view<R, 0> ev(v);
+    auto iter = getBegin(ev);
+    auto sent = getEnd(ev);
+    assert(iter == sent);
+  }
+}
+
+constexpr bool test() {
+  testOne<R, false, false>();
+  testOne<R, true, true>();
+  testOne<CrossComparableR, false, false>();
+  testOne<CrossComparableR, true, true>();
+  testOne<CrossComparableR, true, false>();
+  testOne<CrossComparableR, false, true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/minus.pass.cpp
new file mode 100644
index 0000000..9af7b09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/sentinel/minus.pass.cpp
@@ -0,0 +1,213 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<bool OtherConst>
+//   requires sized_sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>>
+// friend constexpr range_difference_t<maybe-const<OtherConst, V>>
+//   operator-(const iterator<OtherConst>& x, const sentinel& y);
+//
+// template<bool OtherConst>
+//   requires sized_sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>>
+// friend constexpr range_difference_t<maybe-const<OtherConst, V>>
+//   operator-(const sentinel& x, const iterator<OtherConst>& y);
+
+#include <cassert>
+#include <concepts>
+#include <functional>
+#include <ranges>
+#include <tuple>
+
+#include "../types.h"
+
+template <bool Const>
+struct Iter {
+  std::tuple<int>* it_;
+
+  using value_type       = std::tuple<int>;
+  using difference_type  = intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  constexpr decltype(auto) operator*() const { return *it_; }
+  constexpr Iter& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++it_; }
+};
+
+template <bool Const>
+struct Sent {
+  std::tuple<int>* end_;
+
+  constexpr bool operator==(const Iter<Const>& i) const { return i.it_ == end_; }
+};
+
+template <bool Const>
+struct SizedSent {
+  std::tuple<int>* end_;
+
+  constexpr bool operator==(const Iter<Const>& i) const { return i.it_ == end_; }
+
+  friend constexpr auto operator-(const SizedSent& st, const Iter<Const>& it) { return st.end_ - it.it_; }
+
+  friend constexpr auto operator-(const Iter<Const>& it, const SizedSent& st) { return it.it_ - st.end_; }
+};
+
+template <bool Const>
+struct CrossSizedSent {
+  std::tuple<int>* end_;
+
+  template <bool C>
+  constexpr bool operator==(const Iter<C>& i) const {
+    return i.it_ == end_;
+  }
+
+  template <bool C>
+  friend constexpr auto operator-(const CrossSizedSent& st, const Iter<C>& it) {
+    return st.end_ - it.it_;
+  }
+
+  template <bool C>
+  friend constexpr auto operator-(const Iter<C>& it, const CrossSizedSent& st) {
+    return it.it_ - st.end_;
+  }
+};
+
+template <template <bool> class It, template <bool> class St>
+struct Range : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+
+  using iterator       = It<false>;
+  using sentinel       = St<false>;
+  using const_iterator = It<true>;
+  using const_sentinel = St<true>;
+
+  constexpr iterator begin() { return {buffer_}; }
+  constexpr const_iterator begin() const { return {buffer_}; }
+  constexpr sentinel end() { return sentinel{buffer_ + size_}; }
+  constexpr const_sentinel end() const { return const_sentinel{buffer_ + size_}; }
+};
+
+template <class T, class U>
+concept HasMinus = requires(const T t, const U u) { t - u; };
+
+template <class BaseRange>
+using ElementsView = std::ranges::elements_view<BaseRange, 0>;
+
+template <class BaseRange>
+using ElemIter = std::ranges::iterator_t<ElementsView<BaseRange>>;
+
+template <class BaseRange>
+using EleConstIter = std::ranges::iterator_t<const ElementsView<BaseRange>>;
+
+template <class BaseRange>
+using EleSent = std::ranges::sentinel_t<ElementsView<BaseRange>>;
+
+template <class BaseRange>
+using EleConstSent = std::ranges::sentinel_t<const ElementsView<BaseRange>>;
+
+constexpr void testConstraints() {
+  // base is not sized
+  {
+    using Base = Range<Iter, Sent>;
+    static_assert(!HasMinus<EleSent<Base>, ElemIter<Base>>);
+    static_assert(!HasMinus<ElemIter<Base>, EleSent<Base>>);
+
+    static_assert(!HasMinus<EleSent<Base>, EleConstIter<Base>>);
+    static_assert(!HasMinus<EleConstIter<Base>, EleSent<Base>>);
+
+    static_assert(!HasMinus<EleConstSent<Base>, EleConstIter<Base>>);
+    static_assert(!HasMinus<EleConstIter<Base>, EleConstSent<Base>>);
+
+    static_assert(!HasMinus<EleConstSent<Base>, ElemIter<Base>>);
+    static_assert(!HasMinus<ElemIter<Base>, EleConstSent<Base>>);
+  }
+
+  // base is sized but not cross const
+  {
+    using Base = Range<Iter, SizedSent>;
+    static_assert(HasMinus<EleSent<Base>, ElemIter<Base>>);
+    static_assert(HasMinus<ElemIter<Base>, EleSent<Base>>);
+
+    static_assert(!HasMinus<EleSent<Base>, EleConstIter<Base>>);
+    static_assert(!HasMinus<EleConstIter<Base>, EleSent<Base>>);
+
+    static_assert(HasMinus<EleConstSent<Base>, EleConstIter<Base>>);
+    static_assert(HasMinus<EleConstIter<Base>, EleConstSent<Base>>);
+
+    static_assert(!HasMinus<EleConstSent<Base>, ElemIter<Base>>);
+    static_assert(!HasMinus<ElemIter<Base>, EleConstSent<Base>>);
+  }
+
+  // base is cross const sized
+  {
+    using Base = Range<Iter, CrossSizedSent>;
+    static_assert(HasMinus<EleSent<Base>, ElemIter<Base>>);
+    static_assert(HasMinus<ElemIter<Base>, EleSent<Base>>);
+
+    static_assert(HasMinus<EleSent<Base>, EleConstIter<Base>>);
+    static_assert(HasMinus<EleConstIter<Base>, EleSent<Base>>);
+
+    static_assert(HasMinus<EleConstSent<Base>, EleConstIter<Base>>);
+    static_assert(HasMinus<EleConstIter<Base>, EleConstSent<Base>>);
+
+    static_assert(HasMinus<EleConstSent<Base>, ElemIter<Base>>);
+    static_assert(HasMinus<ElemIter<Base>, EleConstSent<Base>>);
+  }
+}
+
+constexpr bool test() {
+  std::tuple<int> buffer[] = {{1}, {2}, {3}, {4}, {5}};
+
+  // base is sized but not cross const
+  {
+    using Base = Range<Iter, SizedSent>;
+    Base base{buffer};
+    auto ev         = base | std::views::elements<0>;
+    auto iter       = ev.begin();
+    auto const_iter = std::as_const(ev).begin();
+    auto sent       = ev.end();
+    auto const_sent = std::as_const(ev).end();
+
+    assert(iter - sent == -5);
+    assert(sent - iter == 5);
+    assert(const_iter - const_sent == -5);
+    assert(const_sent - const_iter == 5);
+  }
+
+  // base is cross const sized
+  {
+    using Base = Range<Iter, CrossSizedSent>;
+    Base base{buffer};
+    auto ev         = base | std::views::elements<0>;
+    auto iter       = ev.begin();
+    auto const_iter = std::as_const(ev).begin();
+    auto sent       = ev.end();
+    auto const_sent = std::as_const(ev).end();
+
+    assert(iter - sent == -5);
+    assert(sent - iter == 5);
+    assert(iter - const_sent == -5);
+    assert(const_sent - iter == 5);
+    assert(const_iter - sent == -5);
+    assert(sent - const_iter == 5);
+    assert(const_iter - const_sent == -5);
+    assert(const_sent - const_iter == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/size.pass.cpp
new file mode 100644
index 0000000..027cb93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/size.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() requires sized_range<V>
+// constexpr auto size() const requires sized_range<const V>
+
+#include <cassert>
+#include <ranges>
+#include <tuple>
+#include <utility>
+
+#include "types.h"
+
+template <class T>
+concept HasSize = requires(T t) { t.size(); };
+
+static_assert(HasSize<std::ranges::elements_view<SimpleCommon, 0>>);
+static_assert(HasSize<const std::ranges::elements_view<SimpleCommon, 0>>);
+
+struct NonSized : std::ranges::view_base {
+  using iterator = forward_iterator<std::tuple<int>*>;
+  iterator begin() const;
+  iterator end() const;
+};
+static_assert(!std::ranges::sized_range<NonSized>);
+static_assert(!std::ranges::sized_range<const NonSized>);
+
+static_assert(!HasSize<std::ranges::elements_view<NonSized, 0>>);
+static_assert(!HasSize<const std::ranges::elements_view<NonSized, 0>>);
+
+struct SizedNonConst : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+
+  using iterator = forward_iterator<std::tuple<int>*>;
+  constexpr auto begin() const { return iterator{buffer_}; }
+  constexpr auto end() const { return iterator{buffer_ + size_}; }
+  constexpr std::size_t size() { return size_; }
+};
+
+static_assert(HasSize<std::ranges::elements_view<SizedNonConst, 0>>);
+static_assert(!HasSize<const std::ranges::elements_view<SizedNonConst, 0>>);
+
+struct OnlyConstSized : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+
+  using iterator = forward_iterator<std::tuple<int>*>;
+  constexpr auto begin() const { return iterator{buffer_}; }
+  constexpr auto end() const { return iterator{buffer_ + size_}; }
+  constexpr std::size_t size() const { return size_; }
+  constexpr std::size_t size() = delete;
+};
+
+static_assert(HasSize<const OnlyConstSized>);
+static_assert(HasSize<std::ranges::elements_view<OnlyConstSized, 0>>);
+static_assert(HasSize<const std::ranges::elements_view<OnlyConstSized, 0>>);
+
+constexpr bool test() {
+  std::tuple<int> buffer[] = {{1}, {2}, {3}};
+
+  // non-const and const are sized
+  {
+    auto ev = std::views::elements<0>(buffer);
+    assert(ev.size() == 3);
+    assert(std::as_const(ev).size() == 3);
+  }
+
+  {
+    // const-view non-sized range
+    auto ev = std::views::elements<0>(SizedNonConst{buffer});
+    assert(ev.size() == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/types.h
new file mode 100644
index 0000000..a1c0884
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.elements/types.h
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_ELEMENTS_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_ELEMENTS_TYPES_H
+
+#include <array>
+#include <functional>
+#include <ranges>
+#include <tuple>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+
+template <class T>
+struct BufferView : std::ranges::view_base {
+  T* buffer_;
+  std::size_t size_;
+
+  template <std::size_t N>
+  constexpr BufferView(T (&b)[N]) : buffer_(b), size_(N) {}
+
+  template <std::size_t N>
+  constexpr BufferView(std::array<T, N>& arr) : buffer_(arr.data()), size_(N) {}
+};
+
+using TupleBufferView = BufferView<std::tuple<int>>;
+
+template <bool Simple>
+struct Common : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+
+  constexpr std::tuple<int>* begin()
+    requires(!Simple)
+  {
+    return buffer_;
+  }
+  constexpr const std::tuple<int>* begin() const { return buffer_; }
+  constexpr std::tuple<int>* end()
+    requires(!Simple)
+  {
+    return buffer_ + size_;
+  }
+  constexpr const std::tuple<int>* end() const { return buffer_ + size_; }
+};
+using SimpleCommon    = Common<true>;
+using NonSimpleCommon = Common<false>;
+
+using SimpleCommonRandomAccessSized    = SimpleCommon;
+using NonSimpleCommonRandomAccessSized = NonSimpleCommon;
+
+static_assert(std::ranges::common_range<Common<true>>);
+static_assert(std::ranges::random_access_range<SimpleCommon>);
+static_assert(std::ranges::sized_range<SimpleCommon>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleCommon>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimpleCommon>);
+
+template <bool Simple>
+struct NonCommon : TupleBufferView {
+  using TupleBufferView::TupleBufferView;
+  constexpr std::tuple<int>* begin()
+    requires(!Simple)
+  {
+    return buffer_;
+  }
+  constexpr const std::tuple<int>* begin() const { return buffer_; }
+  constexpr sentinel_wrapper<std::tuple<int>*> end()
+    requires(!Simple)
+  {
+    return sentinel_wrapper<std::tuple<int>*>(buffer_ + size_);
+  }
+  constexpr sentinel_wrapper<const std::tuple<int>*> end() const {
+    return sentinel_wrapper<const std::tuple<int>*>(buffer_ + size_);
+  }
+};
+
+using SimpleNonCommon    = NonCommon<true>;
+using NonSimpleNonCommon = NonCommon<false>;
+
+static_assert(!std::ranges::common_range<SimpleNonCommon>);
+static_assert(std::ranges::random_access_range<SimpleNonCommon>);
+static_assert(!std::ranges::sized_range<SimpleNonCommon>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleNonCommon>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimpleNonCommon>);
+
+template <class Derived>
+struct IterBase {
+  using iterator_concept = std::random_access_iterator_tag;
+  using value_type       = std::tuple<int>;
+  using difference_type  = intptr_t;
+
+  constexpr std::tuple<int> operator*() const { return std::tuple<int>(5); }
+
+  constexpr Derived& operator++() { return *this; }
+  constexpr void operator++(int) {}
+
+  friend constexpr bool operator==(const IterBase&, const IterBase&) = default;
+};
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_ELEMENTS_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..215ef8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/borrowing.compile.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   inline constexpr bool enable_borrowed_range<empty_view<T>> = true;
+
+#include <ranges>
+
+#include "test_range.h"
+
+static_assert(std::ranges::borrowed_range<std::ranges::empty_view<int>>);
+static_assert(std::ranges::borrowed_range<std::ranges::empty_view<int*>>);
+static_assert(std::ranges::borrowed_range<std::ranges::empty_view<BorrowedView>>);
+static_assert(std::ranges::borrowed_range<std::ranges::empty_view<NonBorrowedView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/empty_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/empty_view.pass.cpp
new file mode 100644
index 0000000..70cba99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/empty_view.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// class empty_view;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<class T>
+constexpr void testType() {
+  static_assert(std::ranges::range<std::ranges::empty_view<T>>);
+  static_assert(std::ranges::range<const std::ranges::empty_view<T>>);
+  static_assert(std::ranges::view<std::ranges::empty_view<T>>);
+
+  std::ranges::empty_view<T> empty;
+
+  assert(empty.begin() == nullptr);
+  assert(empty.end() == nullptr);
+  assert(empty.data() == nullptr);
+  assert(empty.size() == 0);
+  assert(empty.empty() == true);
+
+  assert(std::ranges::begin(empty) == nullptr);
+  assert(std::ranges::end(empty) == nullptr);
+  assert(std::ranges::data(empty) == nullptr);
+  assert(std::ranges::size(empty) == 0);
+  assert(std::ranges::empty(empty) == true);
+}
+
+struct Empty {};
+struct BigType { char buff[8]; };
+
+template<class T>
+concept ValidEmptyView = requires { typename std::ranges::empty_view<T>; };
+
+constexpr bool test() {
+  // Not objects:
+  static_assert(!ValidEmptyView<int&>);
+  static_assert(!ValidEmptyView<void>);
+
+  testType<int>();
+  testType<const int>();
+  testType<int*>();
+  testType<Empty>();
+  testType<const Empty>();
+  testType<BigType>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/views.empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/views.empty.pass.cpp
new file mode 100644
index 0000000..a2d7660
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.empty/views.empty.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class _Tp>
+// inline constexpr empty_view<_Tp> empty{};
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+constexpr void testType() {
+  ASSERT_SAME_TYPE(decltype(std::views::empty<T>), const std::ranges::empty_view<T>);
+  ASSERT_SAME_TYPE(decltype((std::views::empty<T>)), const std::ranges::empty_view<T>&);
+
+  auto v = std::views::empty<T>;
+  assert(std::ranges::empty(v));
+}
+
+struct Empty {};
+struct BigType {
+  char buff[8];
+};
+
+constexpr bool test() {
+
+  testType<int>();
+  testType<const int>();
+  testType<int*>();
+  testType<Empty>();
+  testType<const Empty>();
+  testType<BigType>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/adaptor.pass.cpp
new file mode 100644
index 0000000..1adf1b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/adaptor.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::filter
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <initializer_list>
+#include <type_traits>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct NonCopyablePredicate {
+  NonCopyablePredicate(NonCopyablePredicate const&) = delete;
+  template <class T>
+  constexpr bool operator()(T x) const { return x % 2 == 0; }
+};
+
+struct Range : std::ranges::view_base {
+  using Iterator = forward_iterator<int*>;
+  using Sentinel = sentinel_wrapper<Iterator>;
+  constexpr explicit Range(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr Iterator begin() const { return Iterator(begin_); }
+  constexpr Sentinel end() const { return Sentinel(Iterator(end_)); }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i % 2 == 0; }
+};
+
+template <typename View>
+constexpr void compareViews(View v, std::initializer_list<int> list) {
+  auto b1 = v.begin();
+  auto e1 = v.end();
+  auto b2 = list.begin();
+  auto e2 = list.end();
+  for (; b1 != e1 && b2 != e2; ++b1, ++b2) {
+    assert(*b1 == *b2);
+  }
+  assert(b1 == e1);
+  assert(b2 == e2);
+}
+
+constexpr bool test() {
+  int buff[] = {0, 1, 2, 3, 4, 5, 6, 7};
+
+  // Test `views::filter(pred)(v)`
+  {
+    using Result = std::ranges::filter_view<Range, Pred>;
+    Range const range(buff, buff + 8);
+    Pred pred;
+
+    {
+      std::same_as<Result> decltype(auto) result = std::views::filter(pred)(range);
+      compareViews(result, {0, 2, 4, 6});
+    }
+    {
+      auto const partial = std::views::filter(pred);
+      std::same_as<Result> decltype(auto) result = partial(range);
+      compareViews(result, {0, 2, 4, 6});
+    }
+  }
+
+  // Test `v | views::filter(pred)`
+  {
+    using Result = std::ranges::filter_view<Range, Pred>;
+    Range const range(buff, buff + 8);
+    Pred pred;
+
+    {
+      std::same_as<Result> decltype(auto) result = range | std::views::filter(pred);
+      compareViews(result, {0, 2, 4, 6});
+    }
+    {
+      auto const partial = std::views::filter(pred);
+      std::same_as<Result> decltype(auto) result = range | partial;
+      compareViews(result, {0, 2, 4, 6});
+    }
+  }
+
+  // Test `views::filter(v, pred)`
+  {
+    using Result = std::ranges::filter_view<Range, Pred>;
+    Range const range(buff, buff + 8);
+    Pred pred;
+
+    std::same_as<Result> decltype(auto) result = std::views::filter(range, pred);
+    compareViews(result, {0, 2, 4, 6});
+  }
+
+  // Test that one can call std::views::filter with arbitrary stuff, as long as we
+  // don't try to actually complete the call by passing it a range.
+  //
+  // That makes no sense and we can't do anything with the result, but it's valid.
+  {
+    struct X { };
+    [[maybe_unused]] auto partial = std::views::filter(X{});
+  }
+
+  // Test `adaptor | views::filter(pred)`
+  {
+    Range const range(buff, buff + 8);
+
+    {
+      auto pred1 = [](int i) { return i % 2 == 0; };
+      auto pred2 = [](int i) { return i % 3 == 0; };
+      using Result = std::ranges::filter_view<std::ranges::filter_view<Range, decltype(pred1)>, decltype(pred2)>;
+      std::same_as<Result> decltype(auto) result = range | std::views::filter(pred1) | std::views::filter(pred2);
+      compareViews(result, {0, 6});
+    }
+    {
+      auto pred1 = [](int i) { return i % 2 == 0; };
+      auto pred2 = [](int i) { return i % 3 == 0; };
+      using Result = std::ranges::filter_view<std::ranges::filter_view<Range, decltype(pred1)>, decltype(pred2)>;
+      auto const partial = std::views::filter(pred1) | std::views::filter(pred2);
+      std::same_as<Result> decltype(auto) result = range | partial;
+      compareViews(result, {0, 6});
+    }
+  }
+
+  // Test SFINAE friendliness
+  {
+    struct NotAView { };
+    struct NotInvocable { };
+
+    static_assert(!CanBePiped<Range,    decltype(std::views::filter)>);
+    static_assert( CanBePiped<Range,    decltype(std::views::filter(Pred{}))>);
+    static_assert(!CanBePiped<NotAView, decltype(std::views::filter(Pred{}))>);
+    static_assert(!CanBePiped<Range,    decltype(std::views::filter(NotInvocable{}))>);
+
+    static_assert(!std::is_invocable_v<decltype(std::views::filter)>);
+    static_assert(!std::is_invocable_v<decltype(std::views::filter), Pred, Range>);
+    static_assert( std::is_invocable_v<decltype(std::views::filter), Range, Pred>);
+    static_assert(!std::is_invocable_v<decltype(std::views::filter), Range, Pred, Pred>);
+    static_assert(!std::is_invocable_v<decltype(std::views::filter), NonCopyablePredicate>);
+  }
+
+  {
+    static_assert(std::is_same_v<decltype(std::ranges::views::filter), decltype(std::views::filter)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/base.pass.cpp
new file mode 100644
index 0000000..78f0ae3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/base.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr View base() const& requires copy_constructible<View>;
+// constexpr View base() &&;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+struct Range : std::ranges::view_base {
+  constexpr explicit Range(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr Range(Range const& other) : begin_(other.begin_), end_(other.end_), wasCopyInitialized(true) { }
+  constexpr Range(Range&& other) : begin_(other.begin_), end_(other.end_), wasMoveInitialized(true) { }
+  Range& operator=(Range const&) = default;
+  Range& operator=(Range&&) = default;
+  constexpr int* begin() const { return begin_; }
+  constexpr int* end() const { return end_; }
+
+  int* begin_;
+  int* end_;
+  bool wasCopyInitialized = false;
+  bool wasMoveInitialized = false;
+};
+
+struct Pred {
+  bool operator()(int) const;
+};
+
+struct NoCopyRange : std::ranges::view_base {
+  explicit NoCopyRange(int*, int*);
+  NoCopyRange(NoCopyRange const&) = delete;
+  NoCopyRange(NoCopyRange&&) = default;
+  NoCopyRange& operator=(NoCopyRange const&) = default;
+  NoCopyRange& operator=(NoCopyRange&&) = default;
+  int* begin() const;
+  int* end() const;
+};
+
+template <typename T>
+concept can_call_base_on = requires(T t) { std::forward<T>(t).base(); };
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Check the const& overload
+  {
+    Range range(buff, buff + 8);
+    std::ranges::filter_view<Range, Pred> const view(range, Pred{});
+    std::same_as<Range> decltype(auto) result = view.base();
+    assert(result.wasCopyInitialized);
+    assert(result.begin() == buff);
+    assert(result.end() == buff + 8);
+  }
+
+  // Check the && overload
+  {
+    Range range(buff, buff + 8);
+    std::ranges::filter_view<Range, Pred> view(range, Pred{});
+    std::same_as<Range> decltype(auto) result = std::move(view).base();
+    assert(result.wasMoveInitialized);
+    assert(result.begin() == buff);
+    assert(result.end() == buff + 8);
+  }
+
+  // Ensure the const& overload is not considered when the base is not copy-constructible
+  {
+    static_assert(!can_call_base_on<std::ranges::filter_view<NoCopyRange, Pred> const&>);
+    static_assert(!can_call_base_on<std::ranges::filter_view<NoCopyRange, Pred>&>);
+    static_assert( can_call_base_on<std::ranges::filter_view<NoCopyRange, Pred>&&>);
+    static_assert( can_call_base_on<std::ranges::filter_view<NoCopyRange, Pred>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/begin.pass.cpp
new file mode 100644
index 0000000..4784627
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/begin.pass.cpp
@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator begin();
+
+#include <ranges>
+
+#include <cassert>
+#include "test_iterators.h"
+#include "types.h"
+
+struct Range : std::ranges::view_base {
+  using Iterator = forward_iterator<int*>;
+  using Sentinel = sentinel_wrapper<Iterator>;
+  constexpr explicit Range(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr Iterator begin() const { return Iterator(begin_); }
+  constexpr Sentinel end() const { return Sentinel(Iterator(end_)); }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+// A range that isn't a forward_range, used to test filter_view
+// when we don't cache the result of begin()
+struct InputRange : std::ranges::view_base {
+  using Iterator = cpp17_input_iterator<int*>;
+  using Sentinel = sentinel_wrapper<Iterator>;
+  constexpr explicit InputRange(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr Iterator begin() const { return Iterator(begin_); }
+  constexpr Sentinel end() const { return Sentinel(Iterator(end_)); }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+struct TrackingPred : TrackInitialization {
+  using TrackInitialization::TrackInitialization;
+  constexpr bool operator()(int i) const { return i % 2 == 0; }
+};
+
+template <typename Range>
+constexpr void general_tests() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Check the return type of `.begin()`
+  {
+    Range range(buff, buff + 1);
+    auto pred = [](int) { return true; };
+    std::ranges::filter_view view(range, pred);
+    using FilterIterator = std::ranges::iterator_t<decltype(view)>;
+    ASSERT_SAME_TYPE(FilterIterator, decltype(view.begin()));
+  }
+
+  // begin() over an empty range
+  {
+    Range range(buff, buff);
+    auto pred = [](int) { return true; };
+    std::ranges::filter_view view(range, pred);
+    auto it = view.begin();
+    assert(base(it.base()) == buff);
+    assert(it == view.end());
+  }
+
+  // begin() over a 1-element range
+  {
+    {
+      Range range(buff, buff + 1);
+      auto pred = [](int i) { return i == 1; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff);
+    }
+    {
+      Range range(buff, buff + 1);
+      auto pred = [](int) { return false; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff + 1);
+      assert(it == view.end());
+    }
+  }
+
+  // begin() over a 2-element range
+  {
+    {
+      Range range(buff, buff + 2);
+      auto pred = [](int i) { return i == 1; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff);
+    }
+    {
+      Range range(buff, buff + 2);
+      auto pred = [](int i) { return i == 2; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff + 1);
+    }
+    {
+      Range range(buff, buff + 2);
+      auto pred = [](int) { return false; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff + 2);
+      assert(it == view.end());
+    }
+  }
+
+  // begin() over a N-element range
+  {
+    for (int k = 1; k != 8; ++k) {
+      Range range(buff, buff + 8);
+      auto pred = [=](int i) { return i == k; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff + (k - 1));
+    }
+    {
+      Range range(buff, buff + 8);
+      auto pred = [](int) { return false; };
+      std::ranges::filter_view view(range, pred);
+      auto it = view.begin();
+      assert(base(it.base()) == buff + 8);
+      assert(it == view.end());
+    }
+  }
+
+  // Make sure we do not make a copy of the predicate when we call begin()
+  // (we should be passing it to ranges::find_if using std::ref)
+  {
+    bool moved = false, copied = false;
+    Range range(buff, buff + 2);
+    std::ranges::filter_view view(range, TrackingPred(&moved, &copied));
+    moved = false;
+    copied = false;
+    [[maybe_unused]] auto it = view.begin();
+    assert(!moved);
+    assert(!copied);
+  }
+
+  // Test with a non-const predicate
+  {
+    Range range(buff, buff + 8);
+    auto pred = [](int i) mutable { return i % 2 == 0; };
+    std::ranges::filter_view view(range, pred);
+    auto it = view.begin();
+    assert(base(it.base()) == buff + 1);
+  }
+
+  // Test with a predicate that takes by non-const reference
+  {
+    Range range(buff, buff + 8);
+    auto pred = [](int& i) { return i % 2 == 0; };
+    std::ranges::filter_view view(range, pred);
+    auto it = view.begin();
+    assert(base(it.base()) == buff + 1);
+  }
+}
+
+template <typename ForwardRange>
+constexpr void cache_tests() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Make sure that we cache the result of begin() on subsequent calls
+  // (only applies to forward_ranges)
+  ForwardRange range(buff, buff + 8);
+  int called = 0;
+  auto pred = [&](int i) { ++called; return i == 3; };
+
+  std::ranges::filter_view view(range, pred);
+  assert(called == 0);
+  for (int k = 0; k != 3; ++k) {
+    auto it = view.begin();
+    assert(base(it.base()) == buff + 2);
+    assert(called == 3);
+  }
+}
+
+constexpr bool test() {
+  general_tests<Range>();
+  general_tests<InputRange>(); // test when we don't cache the result
+  cache_tests<Range>();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/constraints.compile.pass.cpp
new file mode 100644
index 0000000..ec10ff2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/constraints.compile.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Check constraints on the type itself.
+//
+// template<input_range View, indirect_unary_predicate<iterator_t<View>> Pred>
+//    requires view<View> && is_object_v<Pred>
+// class filter_view;
+
+#include <ranges>
+
+#include <concepts>
+#include <cstddef>
+#include <iterator>
+#include <type_traits>
+
+template <class View, class Pred>
+concept can_form_filter_view = requires {
+  typename std::ranges::filter_view<View, Pred>;
+};
+
+// filter_view is not valid when the view is not an input_range
+namespace test1 {
+  struct View : std::ranges::view_base {
+    struct NotInputIterator {
+      NotInputIterator& operator++();
+      void operator++(int);
+      int& operator*() const;
+      using difference_type = std::ptrdiff_t;
+      friend bool operator==(NotInputIterator const&, NotInputIterator const&);
+    };
+    NotInputIterator begin() const;
+    NotInputIterator end() const;
+  };
+  struct Pred { bool operator()(int) const; };
+
+  static_assert(!std::ranges::input_range<View>);
+  static_assert( std::indirect_unary_predicate<Pred, int*>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::is_object_v<Pred>);
+  static_assert(!can_form_filter_view<View, Pred>);
+}
+
+// filter_view is not valid when the predicate is not indirect_unary_predicate
+namespace test2 {
+  struct View : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+  };
+  struct Pred { };
+
+  static_assert( std::ranges::input_range<View>);
+  static_assert(!std::indirect_unary_predicate<Pred, int*>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::is_object_v<Pred>);
+  static_assert(!can_form_filter_view<View, Pred>);
+}
+
+// filter_view is not valid when the view is not a view
+namespace test3 {
+  struct View {
+    int* begin() const;
+    int* end() const;
+  };
+  struct Pred { bool operator()(int) const; };
+
+  static_assert( std::ranges::input_range<View>);
+  static_assert( std::indirect_unary_predicate<Pred, int*>);
+  static_assert(!std::ranges::view<View>);
+  static_assert( std::is_object_v<Pred>);
+  static_assert(!can_form_filter_view<View, Pred>);
+}
+
+// filter_view is not valid when the predicate is not an object type
+namespace test4 {
+  struct View : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+  };
+  using Pred = bool(&)(int);
+
+  static_assert( std::ranges::input_range<View>);
+  static_assert( std::indirect_unary_predicate<Pred, int*>);
+  static_assert( std::ranges::view<View>);
+  static_assert(!std::is_object_v<Pred>);
+  static_assert(!can_form_filter_view<View, Pred>);
+}
+
+// filter_view is valid when all the constraints are satisfied (test the test)
+namespace test5 {
+  struct View : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+  };
+  struct Pred { bool operator()(int) const; };
+
+  static_assert( std::ranges::input_range<View>);
+  static_assert( std::indirect_unary_predicate<Pred, int*>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::is_object_v<Pred>);
+  static_assert( can_form_filter_view<View, Pred>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctad.pass.cpp
new file mode 100644
index 0000000..54e2721
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctad.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class Range, class Pred>
+// filter_view(Range&&, Pred) -> filter_view<views::all_t<Range>, Pred>;
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  View() = default;
+  forward_iterator<int*> begin() const;
+  sentinel_wrapper<forward_iterator<int*>> end() const;
+};
+static_assert(std::ranges::view<View>);
+
+// A range that is not a view
+struct Range {
+  Range() = default;
+  forward_iterator<int*> begin() const;
+  sentinel_wrapper<forward_iterator<int*>> end() const;
+};
+static_assert(std::ranges::range<Range> && !std::ranges::view<Range>);
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i % 2 == 0; }
+};
+
+constexpr bool test() {
+  {
+    View v;
+    Pred pred;
+    std::ranges::filter_view view(v, pred);
+    static_assert(std::is_same_v<decltype(view), std::ranges::filter_view<View, Pred>>);
+  }
+
+  // Test with a range that isn't a view, to make sure we properly use views::all_t in the implementation.
+  {
+    Range r;
+    Pred pred;
+    std::ranges::filter_view view(r, pred);
+    static_assert(std::is_same_v<decltype(view), std::ranges::filter_view<std::ranges::ref_view<Range>, Pred>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctor.default.pass.cpp
new file mode 100644
index 0000000..f231097
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctor.default.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// filter_view() requires std::default_initializable<View> &&
+//                        std::default_initializable<Pred> = default;
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+
+constexpr int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+struct DefaultConstructibleView : std::ranges::view_base {
+  constexpr DefaultConstructibleView() : begin_(buff), end_(buff + 8) { }
+  constexpr int const* begin() const { return begin_; }
+  constexpr int const* end() const { return end_; }
+private:
+  int const* begin_;
+  int const* end_;
+};
+
+struct DefaultConstructiblePredicate {
+  DefaultConstructiblePredicate() = default;
+  constexpr bool operator()(int i) const { return i % 2 == 0; }
+};
+
+struct NoDefaultView : std::ranges::view_base {
+  NoDefaultView() = delete;
+  int* begin() const;
+  int* end() const;
+};
+
+struct NoDefaultPredicate {
+  NoDefaultPredicate() = delete;
+  constexpr bool operator()(int) const;
+};
+
+struct NoexceptView : std::ranges::view_base {
+  NoexceptView() noexcept;
+  int const* begin() const;
+  int const* end() const;
+};
+
+struct NoexceptPredicate {
+  NoexceptPredicate() noexcept;
+  bool operator()(int) const;
+};
+
+constexpr bool test() {
+  {
+    using View = std::ranges::filter_view<DefaultConstructibleView, DefaultConstructiblePredicate>;
+    View view;
+    auto it = view.begin(), end = view.end();
+    assert(*it++ == 2);
+    assert(*it++ == 4);
+    assert(*it++ == 6);
+    assert(*it++ == 8);
+    assert(it == end);
+  }
+
+  {
+    using View = std::ranges::filter_view<DefaultConstructibleView, DefaultConstructiblePredicate>;
+    View view = {};
+    auto it = view.begin(), end = view.end();
+    assert(*it++ == 2);
+    assert(*it++ == 4);
+    assert(*it++ == 6);
+    assert(*it++ == 8);
+    assert(it == end);
+  }
+
+  // Check cases where the default constructor isn't provided
+  {
+    static_assert(!std::is_default_constructible_v<std::ranges::filter_view<NoDefaultView,            DefaultConstructiblePredicate>>);
+    static_assert(!std::is_default_constructible_v<std::ranges::filter_view<DefaultConstructibleView, NoDefaultPredicate>>);
+    static_assert(!std::is_default_constructible_v<std::ranges::filter_view<NoDefaultView,            NoDefaultPredicate>>);
+  }
+
+  // Check noexcept-ness
+  {
+    {
+      using View = std::ranges::filter_view<DefaultConstructibleView, DefaultConstructiblePredicate>;
+      static_assert(!noexcept(View()));
+    }
+    {
+      using View = std::ranges::filter_view<NoexceptView, NoexceptPredicate>;
+      static_assert(noexcept(View()));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctor.view_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctor.view_pred.pass.cpp
new file mode 100644
index 0000000..644f8de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/ctor.view_pred.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr filter_view(View, Pred);
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "types.h"
+
+struct Range : std::ranges::view_base {
+  constexpr explicit Range(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr int* begin() const { return begin_; }
+  constexpr int* end() const { return end_; }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i % 2 != 0; }
+};
+
+struct TrackingPred : TrackInitialization {
+  using TrackInitialization::TrackInitialization;
+  constexpr bool operator()(int) const;
+};
+
+struct TrackingRange : TrackInitialization, std::ranges::view_base {
+  using TrackInitialization::TrackInitialization;
+  int* begin() const;
+  int* end() const;
+};
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Test explicit syntax
+  {
+    Range range(buff, buff + 8);
+    Pred pred;
+    std::ranges::filter_view<Range, Pred> view(range, pred);
+    auto it = view.begin(), end = view.end();
+    assert(*it++ == 1);
+    assert(*it++ == 3);
+    assert(*it++ == 5);
+    assert(*it++ == 7);
+    assert(it == end);
+  }
+
+  // Test implicit syntax
+  {
+    Range range(buff, buff + 8);
+    Pred pred;
+    std::ranges::filter_view<Range, Pred> view = {range, pred};
+    auto it = view.begin(), end = view.end();
+    assert(*it++ == 1);
+    assert(*it++ == 3);
+    assert(*it++ == 5);
+    assert(*it++ == 7);
+    assert(it == end);
+  }
+
+  // Make sure we move the view
+  {
+    bool moved = false, copied = false;
+    TrackingRange range(&moved, &copied);
+    Pred pred;
+    [[maybe_unused]] std::ranges::filter_view<TrackingRange, Pred> view(std::move(range), pred);
+    assert(moved);
+    assert(!copied);
+  }
+
+  // Make sure we move the predicate
+  {
+    bool moved = false, copied = false;
+    Range range(buff, buff + 8);
+    TrackingPred pred(&moved, &copied);
+    [[maybe_unused]] std::ranges::filter_view<Range, TrackingPred> view(range, std::move(pred));
+    assert(moved);
+    assert(!copied);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/end.pass.cpp
new file mode 100644
index 0000000..8c692fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/end.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end();
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+#include "test_iterators.h"
+
+struct Range : std::ranges::view_base {
+  using Iterator = forward_iterator<int*>;
+  using Sentinel = sentinel_wrapper<Iterator>;
+  constexpr explicit Range(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr Iterator begin() const { return Iterator(begin_); }
+  constexpr Sentinel end() const { return Sentinel(Iterator(end_)); }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+struct CommonRange : std::ranges::view_base {
+  using Iterator = forward_iterator<int*>;
+  constexpr explicit CommonRange(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr Iterator begin() const { return Iterator(begin_); }
+  constexpr Iterator end() const { return Iterator(end_); }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Check the return type of `.end()`
+  {
+    Range range(buff, buff + 1);
+    auto pred = [](int) { return true; };
+    std::ranges::filter_view view(range, pred);
+    using FilterSentinel = std::ranges::sentinel_t<decltype(view)>;
+    ASSERT_SAME_TYPE(FilterSentinel, decltype(view.end()));
+  }
+
+  // end() on an empty range
+  {
+    Range range(buff, buff);
+    auto pred = [](int) { return true; };
+    std::ranges::filter_view view(range, pred);
+    auto end = view.end();
+    assert(base(base(end.base())) == buff);
+  }
+
+  // end() on a 1-element range
+  {
+    Range range(buff, buff + 1);
+    auto pred = [](int) { return true; };
+    std::ranges::filter_view view(range, pred);
+    auto end = view.end();
+    assert(base(base(end.base())) == buff + 1);
+    static_assert(!std::is_same_v<decltype(end), decltype(view.begin())>);
+  }
+
+  // end() on a 2-element range
+  {
+    Range range(buff, buff + 2);
+    auto pred = [](int) { return true; };
+    std::ranges::filter_view view(range, pred);
+    auto end = view.end();
+    assert(base(base(end.base())) == buff + 2);
+    static_assert(!std::is_same_v<decltype(end), decltype(view.begin())>);
+  }
+
+  // end() on a N-element range
+  {
+    for (int k = 1; k != 8; ++k) {
+      Range range(buff, buff + 8);
+      auto pred = [=](int i) { return i == k; };
+      std::ranges::filter_view view(range, pred);
+      auto end = view.end();
+      assert(base(base(end.base())) == buff + 8);
+      static_assert(!std::is_same_v<decltype(end), decltype(view.begin())>);
+    }
+  }
+
+  // end() on a common_range
+  {
+    CommonRange range(buff, buff + 8);
+    auto pred = [](int i) { return i % 2 == 0; };
+    std::ranges::filter_view view(range, pred);
+    auto end = view.end();
+    assert(base(end.base()) == buff + 8);
+    static_assert(std::is_same_v<decltype(end), decltype(view.begin())>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp
new file mode 100644
index 0000000..500d875
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/arrow.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator_t<V> operator->() const
+//    requires has-arrow<iterator_t<V>> && copyable<iterator_t<V>>
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <cstddef>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+struct Point {
+  int x;
+  int y;
+};
+
+template <class T>
+concept has_arrow = requires (T t) {
+  { t->x };
+};
+static_assert(has_arrow<Point*>); // test the test
+
+struct WithArrowOperator {
+  using iterator_category = std::input_iterator_tag;
+  using difference_type = std::ptrdiff_t;
+  using value_type = Point;
+
+  constexpr explicit WithArrowOperator(Point* p) : p_(p) { }
+  constexpr Point& operator*() const { return *p_; }
+  constexpr Point* operator->() const { return p_; } // has arrow
+  constexpr WithArrowOperator& operator++() { ++p_; return *this; }
+  constexpr WithArrowOperator operator++(int) { return WithArrowOperator(p_++); }
+
+  friend constexpr Point* base(WithArrowOperator const& i) { return i.p_; }
+  Point* p_;
+};
+static_assert(std::input_iterator<WithArrowOperator>);
+
+struct WithNonCopyableIterator : std::ranges::view_base {
+  struct iterator {
+    using iterator_category = std::input_iterator_tag;
+    using difference_type = std::ptrdiff_t;
+    using value_type = Point;
+
+    iterator(iterator const&) = delete; // not copyable
+    iterator(iterator&&);
+    iterator& operator=(iterator&&);
+    Point& operator*() const;
+    iterator operator->() const;
+    iterator& operator++();
+    iterator operator++(int);
+
+    // We need this to use Point* as a sentinel type below. sentinel_wrapper
+    // can't be used because this iterator is not copyable.
+    friend bool operator==(iterator const&, Point*);
+  };
+
+  iterator begin() const;
+  Point* end() const;
+};
+static_assert(std::ranges::input_range<WithNonCopyableIterator>);
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  std::array<Point, 5> array{{{0, 0}, {1, 1}, {2, 2}, {3, 3}, {4, 4}}};
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  for (std::ptrdiff_t n = 0; n != 5; ++n) {
+    FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+    FilterIterator const iter(view, Iterator(array.begin() + n));
+    std::same_as<Iterator> decltype(auto) result = iter.operator->();
+    assert(base(result) == array.begin() + n);
+    assert(iter->x == n);
+    assert(iter->y == n);
+  }
+}
+
+constexpr bool tests() {
+  test<WithArrowOperator>();
+  test<Point*>();
+  test<Point const*>();
+  test<contiguous_iterator<Point*>>();
+  test<contiguous_iterator<Point const*>>();
+
+  // Make sure filter_view::iterator doesn't have operator-> if the
+  // underlying iterator doesn't have one.
+  {
+    auto check_no_arrow = []<class It> {
+      using View = minimal_view<It, sentinel_wrapper<It>>;
+      using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+      using FilterIterator = std::ranges::iterator_t<FilterView>;
+      static_assert(!has_arrow<FilterIterator>);
+    };
+    check_no_arrow.operator()<cpp17_input_iterator<Point*>>();
+    check_no_arrow.operator()<cpp20_input_iterator<Point*>>();
+    check_no_arrow.operator()<forward_iterator<Point*>>();
+    check_no_arrow.operator()<bidirectional_iterator<Point*>>();
+    check_no_arrow.operator()<random_access_iterator<Point*>>();
+    check_no_arrow.operator()<int*>();
+  }
+
+  // Make sure filter_view::iterator doesn't have operator-> if the
+  // underlying iterator is not copyable.
+  {
+    using FilterView = std::ranges::filter_view<WithNonCopyableIterator, AlwaysTrue>;
+    using FilterIterator = std::ranges::iterator_t<FilterView>;
+    static_assert(!has_arrow<FilterIterator>);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/base.pass.cpp
new file mode 100644
index 0000000..dfb0f42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/base.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator_t<V> const& base() const& noexcept;
+// constexpr iterator_t<V> base() &&;
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  std::array<int, 5> array{0, 1, 2, 3, 4};
+  FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+
+  // Test the const& version
+  {
+    FilterIterator const iter(view, Iterator(array.begin()));
+    Iterator const& result = iter.base();
+    ASSERT_SAME_TYPE(Iterator const&, decltype(iter.base()));
+    ASSERT_NOEXCEPT(iter.base());
+    assert(base(result) == array.begin());
+  }
+
+  // Test the && version
+  {
+    FilterIterator iter(view, Iterator(array.begin()));
+    Iterator result = std::move(iter).base();
+    ASSERT_SAME_TYPE(Iterator, decltype(std::move(iter).base()));
+    assert(base(result) == array.begin());
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  test<int const*>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/compare.pass.cpp
new file mode 100644
index 0000000..a0f8b4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/compare.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(iterator const&, iterator const&)
+//  requires equality_comparable<iterator_t<V>>
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+template <class T>
+concept has_equal = requires (T const& x, T const& y) { { x == y }; };
+
+template <class Iterator>
+constexpr void test() {
+  using Sentinel = sentinel_wrapper<Iterator>;
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  {
+    std::array<int, 5> array{0, 1, 2, 3, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+    FilterIterator it1 = view.begin();
+    FilterIterator it2 = view.begin();
+    std::same_as<bool> decltype(auto) result = (it1 == it2);
+    assert(result);
+
+    ++it1;
+    assert(!(it1 == it2));
+  }
+
+  {
+    std::array<int, 5> array{0, 1, 2, 3, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+    assert(!(view.begin() == view.end()));
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+
+  test<cpp17_input_iterator<int const*>>();
+  test<forward_iterator<int const*>>();
+  test<bidirectional_iterator<int const*>>();
+  test<random_access_iterator<int const*>>();
+  test<contiguous_iterator<int const*>>();
+  test<int const*>();
+
+  // Make sure `operator==` isn't provided for non comparable iterators
+  {
+    using Iterator = cpp20_input_iterator<int*>;
+    using Sentinel = sentinel_wrapper<Iterator>;
+    using FilterView = std::ranges::filter_view<minimal_view<Iterator, Sentinel>, AlwaysTrue>;
+    using FilterIterator = std::ranges::iterator_t<FilterView>;
+    static_assert(!has_equal<FilterIterator>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/ctor.default.pass.cpp
new file mode 100644
index 0000000..caa84ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/ctor.default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::filter_view<V>::<iterator>() requires default_initializable<iterator_t<V>> = default;
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class Iterator, bool IsNoexcept>
+constexpr void test_default_constructible() {
+  // Make sure the iterator is default constructible when the underlying iterator is.
+  using View = minimal_view<Iterator, sentinel_wrapper<Iterator>>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+  FilterIterator iter1{};
+  FilterIterator iter2;
+  assert(iter1 == iter2);
+  static_assert(noexcept(FilterIterator()) == IsNoexcept);
+}
+
+template <class Iterator>
+constexpr void test_not_default_constructible() {
+  // Make sure the iterator is *not* default constructible when the underlying iterator isn't.
+  using View = minimal_view<Iterator, sentinel_wrapper<Iterator>>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+  static_assert(!std::is_default_constructible_v<FilterIterator>);
+}
+
+constexpr bool tests() {
+  test_not_default_constructible<cpp17_input_iterator<int*>>();
+  test_not_default_constructible<cpp20_input_iterator<int*>>();
+  test_default_constructible<forward_iterator<int*>,         /* noexcept */ false>();
+  test_default_constructible<bidirectional_iterator<int*>,   /* noexcept */ false>();
+  test_default_constructible<random_access_iterator<int*>,   /* noexcept */ false>();
+  test_default_constructible<contiguous_iterator<int*>,      /* noexcept */ false>();
+  test_default_constructible<int*,                           /* noexcept */ true>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/ctor.parent_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/ctor.parent_iter.pass.cpp
new file mode 100644
index 0000000..b0b6645
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/ctor.parent_iter.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr std::ranges::filter_view::<iterator>(filter_view&, iterator_t<V>);
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <utility>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  std::array<int, 10> array{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+  View view(Iterator(array.begin()), Sentinel(Iterator(array.end())));
+  Iterator iter = view.begin();
+
+  FilterView filter_view(std::move(view), AlwaysTrue{});
+  FilterIterator filter_iter(filter_view, std::move(iter));
+  assert(base(filter_iter.base()) == array.begin());
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/decrement.pass.cpp
new file mode 100644
index 0000000..fcae6f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/decrement.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator--() requires bidirectional_range<V>;
+// constexpr iterator operator--(int) requires bidirectional_range<V>;
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <iterator>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+struct EqualTo {
+  int x;
+  constexpr bool operator()(int y) const { return x == y; }
+};
+
+template <class T>
+concept has_pre_decrement = requires (T t) { { --t }; };
+
+template <class T>
+concept has_post_decrement = requires (T t) { { t-- }; };
+
+template <class Iterator>
+using FilterIteratorFor = std::ranges::iterator_t<
+  std::ranges::filter_view<minimal_view<Iterator, sentinel_wrapper<Iterator>>, EqualTo>
+>;
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, EqualTo>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  // Test with a single satisfied value
+  {
+    std::array<int, 5> array{0, 1, 2, 3, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+    FilterIterator it = std::ranges::next(view.begin(), view.end());
+    assert(base(it.base()) == array.end()); // test the test
+
+    FilterIterator& result = --it;
+    ASSERT_SAME_TYPE(FilterIterator&, decltype(--it));
+    assert(&result == &it);
+    assert(base(result.base()) == array.begin() + 1);
+  }
+
+  // Test with more than one satisfied value
+  {
+    std::array<int, 6> array{0, 1, 2, 3, 1, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+    FilterIterator it = std::ranges::next(view.begin(), view.end());
+    assert(base(it.base()) == array.end()); // test the test
+
+    FilterIterator& result = --it;
+    assert(&result == &it);
+    assert(base(result.base()) == array.begin() + 4);
+
+    --it;
+    assert(base(it.base()) == array.begin() + 1);
+  }
+
+  // Test going forward and then backward on the same iterator
+  {
+    std::array<int, 10> array{0, 1, 2, 3, 1, 1, 4, 5, 1, 6};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+    FilterIterator it = view.begin();
+    ++it;
+    --it; assert(base(it.base()) == array.begin() + 1);
+    ++it; ++it;
+    --it; assert(base(it.base()) == array.begin() + 4);
+    ++it; ++it;
+    --it; assert(base(it.base()) == array.begin() + 5);
+    ++it; ++it;
+    --it; assert(base(it.base()) == array.begin() + 8);
+  }
+
+  // Test post-decrement
+  {
+    std::array<int, 6> array{0, 1, 2, 3, 1, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+    FilterIterator it = std::ranges::next(view.begin(), view.end());
+    assert(base(it.base()) == array.end()); // test the test
+
+    FilterIterator result = it--;
+    ASSERT_SAME_TYPE(FilterIterator, decltype(it--));
+    assert(base(result.base()) == array.end());
+    assert(base(it.base()) == array.begin() + 4);
+
+    result = it--;
+    assert(base(result.base()) == array.begin() + 4);
+    assert(base(it.base()) == array.begin() + 1);
+  }
+}
+
+constexpr bool tests() {
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+
+  test<bidirectional_iterator<int const*>>();
+  test<random_access_iterator<int const*>>();
+  test<contiguous_iterator<int const*>>();
+  test<int const*>();
+
+  // Make sure `operator--` isn't provided for non bidirectional ranges
+  {
+    static_assert(!has_pre_decrement<FilterIteratorFor<cpp17_input_iterator<int*>>>);
+    static_assert(!has_pre_decrement<FilterIteratorFor<cpp20_input_iterator<int*>>>);
+    static_assert(!has_pre_decrement<FilterIteratorFor<forward_iterator<int*>>>);
+
+    static_assert(!has_post_decrement<FilterIteratorFor<cpp17_input_iterator<int*>>>);
+    static_assert(!has_post_decrement<FilterIteratorFor<cpp20_input_iterator<int*>>>);
+    static_assert(!has_post_decrement<FilterIteratorFor<forward_iterator<int*>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/deref.pass.cpp
new file mode 100644
index 0000000..064818a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/deref.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr range_reference_t<V> operator*() const;
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <cstddef>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+template <class Iterator, class ValueType = int, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  std::array array{0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+  FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+
+  for (std::size_t n = 0; n != array.size(); ++n) {
+    FilterIterator const iter(view, Iterator(array.begin() + n));
+    ValueType& result = *iter;
+    ASSERT_SAME_TYPE(ValueType&, decltype(*iter));
+    assert(&result == array.begin() + n);
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+
+  test<cpp17_input_iterator<int const*>,   int const>();
+  test<cpp20_input_iterator<int const*>,   int const>();
+  test<forward_iterator<int const*>,       int const>();
+  test<bidirectional_iterator<int const*>, int const>();
+  test<random_access_iterator<int const*>, int const>();
+  test<contiguous_iterator<int const*>,    int const>();
+  test<int const*,                         int const>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/increment.pass.cpp
new file mode 100644
index 0000000..565c0fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/increment.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator++();
+// constexpr void operator++(int);
+// constexpr iterator operator++(int) requires forward_range<V>;
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+struct EqualTo {
+  int x;
+  constexpr bool operator()(int y) const { return x == y; }
+};
+
+struct TrackingPred : TrackInitialization {
+  using TrackInitialization::TrackInitialization;
+  constexpr bool operator()(int i) const { return i == 1; }
+};
+
+template <class Iterator, bool IsForwardRange, bool IsConst>
+constexpr void test() {
+  using Sentinel = sentinel_wrapper<Iterator>;
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, EqualTo>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  // Increment an iterator when it won't find another satisfied value after begin()
+  {
+    std::array<int, 5> array{0, 1, 2, 3, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+
+    FilterIterator it = view.begin();
+    FilterIterator& result = ++it;
+    ASSERT_SAME_TYPE(FilterIterator&, decltype(++it));
+    assert(&result == &it);
+    assert(base(result.base()) == array.end());
+  }
+
+  // Increment the iterator and it finds another value after begin()
+  {
+    std::array<int, 5> array{99, 1, 99, 1, 99};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+
+    FilterIterator it = view.begin();
+    ++it;
+    assert(base(it.base()) == array.begin() + 3);
+  }
+
+  // Increment advances all the way to the end of the range
+  {
+    std::array<int, 5> array{99, 1, 99, 99, 1};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+
+    FilterIterator it = view.begin();
+    ++it;
+    assert(base(it.base()) == array.begin() + 4);
+  }
+
+  // Increment an iterator multiple times
+  {
+    std::array<int, 10> array{0, 1, 2, 3, 1, 1, 4, 5, 1, 6};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+
+    FilterIterator it = view.begin();
+          assert(base(it.base()) == array.begin() + 1);
+    ++it; assert(base(it.base()) == array.begin() + 4);
+    ++it; assert(base(it.base()) == array.begin() + 5);
+    ++it; assert(base(it.base()) == array.begin() + 8);
+    ++it; assert(base(it.base()) == array.end());
+  }
+
+  // Test with a predicate that takes by non-const reference
+  if constexpr (!IsConst) {
+    std::array<int, 4> array{99, 1, 99, 1};
+    View v{Iterator(array.begin()), Sentinel(Iterator(array.end()))};
+    auto pred = [](int& x) { return x == 1; };
+    auto view = std::ranges::filter_view(std::move(v), pred);
+    auto it = view.begin();
+    assert(base(it.base()) == array.begin() + 1);
+    ++it;
+    assert(base(it.base()) == array.begin() + 3);
+  }
+
+  // Make sure we do not make a copy of the predicate when we increment
+  // (we should be passing it to ranges::find_if using std::ref)
+  {
+    bool moved = false, copied = false;
+    std::array<int, 3> array{1, 1, 1};
+    View v{Iterator(array.begin()), Sentinel(Iterator(array.end()))};
+    auto view = std::ranges::filter_view(std::move(v), TrackingPred(&moved, &copied));
+    moved = false;
+    copied = false;
+    auto it = view.begin();
+    ++it;
+    it++;
+    assert(!moved);
+    assert(!copied);
+  }
+
+  // Check post-increment for input ranges
+  if constexpr (!IsForwardRange) {
+    std::array<int, 10> array{0, 1, 2, 3, 1, 1, 4, 5, 1, 6};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+
+    FilterIterator it = view.begin();
+          assert(base(it.base()) == array.begin() + 1);
+    it++; assert(base(it.base()) == array.begin() + 4);
+    it++; assert(base(it.base()) == array.begin() + 5);
+    it++; assert(base(it.base()) == array.begin() + 8);
+    it++; assert(base(it.base()) == array.end());
+    static_assert(std::is_same_v<decltype(it++), void>);
+  }
+
+  // Check post-increment for forward ranges
+  if constexpr (IsForwardRange) {
+    std::array<int, 10> array{0, 1, 2, 3, 1, 1, 4, 5, 1, 6};
+    FilterView view = make_filter_view(array.begin(), array.end(), EqualTo{1});
+
+    FilterIterator it = view.begin();
+    FilterIterator result = it++;
+    ASSERT_SAME_TYPE(FilterIterator, decltype(it++));
+    assert(base(result.base()) == array.begin() + 1);
+    assert(base(it.base()) == array.begin() + 4);
+
+    result = it++;
+    assert(base(result.base()) == array.begin() + 4);
+    assert(base(it.base()) == array.begin() + 5);
+
+    result = it++;
+    assert(base(result.base()) == array.begin() + 5);
+    assert(base(it.base()) == array.begin() + 8);
+
+    result = it++;
+    assert(base(result.base()) == array.begin() + 8);
+    assert(base(it.base()) == array.end());
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>,   /* IsForwardRange */ false, /* IsConst */ false>();
+  test<cpp20_input_iterator<int*>,   /* IsForwardRange */ false, /* IsConst */ false>();
+  test<forward_iterator<int*>,       /* IsForwardRange */ true,  /* IsConst */ false>();
+  test<bidirectional_iterator<int*>, /* IsForwardRange */ true,  /* IsConst */ false>();
+  test<random_access_iterator<int*>, /* IsForwardRange */ true,  /* IsConst */ false>();
+  test<contiguous_iterator<int*>,    /* IsForwardRange */ true,  /* IsConst */ false>();
+  test<int*,                         /* IsForwardRange */ true,  /* IsConst */ false>();
+
+  test<cpp17_input_iterator<int const*>,   /* IsForwardRange */ false, /* IsConst */ true>();
+  test<cpp20_input_iterator<int const*>,   /* IsForwardRange */ false, /* IsConst */ true>();
+  test<forward_iterator<int const*>,       /* IsForwardRange */ true,  /* IsConst */ true>();
+  test<bidirectional_iterator<int const*>, /* IsForwardRange */ true,  /* IsConst */ true>();
+  test<random_access_iterator<int const*>, /* IsForwardRange */ true,  /* IsConst */ true>();
+  test<contiguous_iterator<int const*>,    /* IsForwardRange */ true,  /* IsConst */ true>();
+  test<int const*,                         /* IsForwardRange */ true,  /* IsConst */ true>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/iter_move.pass.cpp
new file mode 100644
index 0000000..72a1b98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/iter_move.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr range_rvalue_reference_t<V> iter_move(iterator const& i)
+//  noexcept(noexcept(ranges::iter_move(i.current_)));
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+template <class Iterator, bool HasNoexceptIterMove>
+constexpr void test() {
+  using Sentinel = sentinel_wrapper<Iterator>;
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  {
+    std::array<int, 5> array{0, 1, 2, 3, 4};
+    FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+    FilterIterator const it = view.begin();
+
+    int&& result = iter_move(it);
+    static_assert(noexcept(iter_move(it)) == HasNoexceptIterMove);
+    assert(&result == array.begin());
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>,           /* noexcept */ false>();
+  test<cpp20_input_iterator<int*>,           /* noexcept */ false>();
+  test<forward_iterator<int*>,               /* noexcept */ false>();
+  test<bidirectional_iterator<int*>,         /* noexcept */ false>();
+  test<random_access_iterator<int*>,         /* noexcept */ false>();
+  test<contiguous_iterator<int*>,            /* noexcept */ false>();
+  test<int*,                                 /* noexcept */ true>();
+  test<NoexceptIterMoveInputIterator<true>,  /* noexcept */ true>();
+  test<NoexceptIterMoveInputIterator<false>, /* noexcept */ false>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/iter_swap.pass.cpp
new file mode 100644
index 0000000..eff7267
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/iter_swap.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr void iter_swap(iterator const& x, iterator const& y)
+//  noexcept(noexcept(ranges::iter_swap(x.current_, y.current_)))
+//  requires(indirectly_swappable<iterator_t<V>>);
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <iterator>
+#include <utility>
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+template <class It>
+concept has_iter_swap = requires (It it) {
+  std::ranges::iter_swap(it, it);
+};
+
+struct IsEven {
+  constexpr bool operator()(int x) const { return x % 2 == 0; }
+};
+
+template <class Iterator, bool IsNoexcept>
+constexpr void test() {
+  using Sentinel = sentinel_wrapper<Iterator>;
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, IsEven>;
+  using FilterIterator = std::ranges::iterator_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  {
+    std::array<int, 5> array{1, 2, 1, 4, 1};
+    FilterView view = make_filter_view(array.begin(), array.end(), IsEven{});
+    FilterIterator const it1 = view.begin();
+    FilterIterator const it2 = std::ranges::next(view.begin());
+
+    static_assert(std::is_same_v<decltype(iter_swap(it1, it2)), void>);
+    static_assert(noexcept(iter_swap(it1, it2)) == IsNoexcept);
+
+    assert(*it1 == 2 && *it2 == 4); // test the test
+    iter_swap(it1, it2);
+    assert(*it1 == 4);
+    assert(*it2 == 2);
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>,           /* noexcept */ false>();
+  test<cpp20_input_iterator<int*>,           /* noexcept */ false>();
+  test<forward_iterator<int*>,               /* noexcept */ false>();
+  test<bidirectional_iterator<int*>,         /* noexcept */ false>();
+  test<random_access_iterator<int*>,         /* noexcept */ false>();
+  test<contiguous_iterator<int*>,            /* noexcept */ false>();
+  test<int*,                                 /* noexcept */ true>();
+  test<NoexceptIterSwapInputIterator<true>,  /* noexcept */ true>();
+  test<NoexceptIterSwapInputIterator<false>, /* noexcept */ false>();
+
+  // Test that iter_swap requires the underlying iterator to be iter_swappable
+  {
+    using Iterator = int const*;
+    using View = minimal_view<Iterator, Iterator>;
+    using FilterView = std::ranges::filter_view<View, IsEven>;
+    using FilterIterator = std::ranges::iterator_t<FilterView>;
+    static_assert(!std::indirectly_swappable<Iterator>);
+    static_assert(!has_iter_swap<FilterIterator>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/types.compile.pass.cpp
new file mode 100644
index 0000000..7cd927f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/iterator/types.compile.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::filter_view::<iterator>::difference_type
+// std::filter_view::<iterator>::value_type
+// std::filter_view::<iterator>::iterator_category
+// std::filter_view::<iterator>::iterator_concept
+
+#include <ranges>
+
+#include <type_traits>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <typename T>
+concept HasIteratorCategory = requires {
+  typename T::iterator_category;
+};
+
+template <class Iterator>
+using FilterViewFor = std::ranges::filter_view<
+  minimal_view<Iterator, sentinel_wrapper<Iterator>>,
+  AlwaysTrue
+>;
+
+template <class Iterator>
+using FilterIteratorFor = std::ranges::iterator_t<FilterViewFor<Iterator>>;
+
+struct ForwardIteratorWithInputCategory {
+  using difference_type = int;
+  using value_type = int;
+  using iterator_category = std::input_iterator_tag;
+  using iterator_concept = std::forward_iterator_tag;
+  ForwardIteratorWithInputCategory();
+  ForwardIteratorWithInputCategory& operator++();
+  ForwardIteratorWithInputCategory operator++(int);
+  int& operator*() const;
+  friend bool operator==(ForwardIteratorWithInputCategory, ForwardIteratorWithInputCategory);
+};
+static_assert(std::forward_iterator<ForwardIteratorWithInputCategory>);
+
+void f() {
+  // Check that value_type is range_value_t and difference_type is range_difference_t
+  {
+    auto test = []<class Iterator> {
+      using FilterView = FilterViewFor<Iterator>;
+      using FilterIterator = FilterIteratorFor<Iterator>;
+      static_assert(std::is_same_v<typename FilterIterator::value_type, std::ranges::range_value_t<FilterView>>);
+      static_assert(std::is_same_v<typename FilterIterator::difference_type, std::ranges::range_difference_t<FilterView>>);
+    };
+    test.operator()<cpp17_input_iterator<int*>>();
+    test.operator()<cpp20_input_iterator<int*>>();
+    test.operator()<forward_iterator<int*>>();
+    test.operator()<bidirectional_iterator<int*>>();
+    test.operator()<random_access_iterator<int*>>();
+    test.operator()<contiguous_iterator<int*>>();
+    test.operator()<int*>();
+  }
+
+  // Check iterator_concept for various categories of ranges
+  {
+    static_assert(std::is_same_v<FilterIteratorFor<cpp17_input_iterator<int*>>::iterator_concept, std::input_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<cpp20_input_iterator<int*>>::iterator_concept, std::input_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<ForwardIteratorWithInputCategory>::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<forward_iterator<int*>>::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<bidirectional_iterator<int*>>::iterator_concept, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<random_access_iterator<int*>>::iterator_concept, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<contiguous_iterator<int*>>::iterator_concept, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<int*>::iterator_concept, std::bidirectional_iterator_tag>);
+  }
+
+  // Check iterator_category for various categories of ranges
+  {
+    static_assert(!HasIteratorCategory<FilterIteratorFor<cpp17_input_iterator<int*>>>);
+    static_assert(!HasIteratorCategory<FilterIteratorFor<cpp20_input_iterator<int*>>>);
+    static_assert(std::is_same_v<FilterIteratorFor<ForwardIteratorWithInputCategory>::iterator_category, std::input_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<forward_iterator<int*>>::iterator_category, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<bidirectional_iterator<int*>>::iterator_category, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<random_access_iterator<int*>>::iterator_category, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<contiguous_iterator<int*>>::iterator_category, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<FilterIteratorFor<int*>::iterator_category, std::bidirectional_iterator_tag>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/pred.pass.cpp
new file mode 100644
index 0000000..5af3978
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/pred.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr Pred const& pred() const;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+struct Range : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  bool operator()(int) const;
+  int value;
+};
+
+constexpr bool test() {
+  {
+    Pred pred{42};
+    std::ranges::filter_view<Range, Pred> const view(Range{}, pred);
+    std::same_as<Pred const&> decltype(auto) result = view.pred();
+    assert(result.value == 42);
+
+    // Make sure we're really holding a reference to something inside the view
+    std::same_as<Pred const&> decltype(auto) result2 = view.pred();
+    assert(&result == &result2);
+  }
+
+  // Same, but calling on a non-const view
+  {
+    Pred pred{42};
+    std::ranges::filter_view<Range, Pred> view(Range{}, pred);
+    std::same_as<Pred const&> decltype(auto) result = view.pred();
+    assert(result.value == 42);
+
+    // Make sure we're really holding a reference to something inside the view
+    std::same_as<Pred const&> decltype(auto) result2 = view.pred();
+    assert(&result == &result2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/base.pass.cpp
new file mode 100644
index 0000000..e547e79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/base.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr sentinel_t<V> base() const;
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <utility>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterSentinel = std::ranges::sentinel_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  std::array<int, 5> array{0, 1, 2, 3, 4};
+  FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+
+  FilterSentinel const sent = view.end();
+  std::same_as<Sentinel> decltype(auto) result = sent.base();
+  assert(base(base(result)) == array.end());
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/compare.pass.cpp
new file mode 100644
index 0000000..cd2a54e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/compare.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(iterator const&, sentinel const&);
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <utility>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+
+  std::array<int, 5> array{0, 1, 2, 3, 4};
+
+  {
+    View v(Iterator(array.begin()), Sentinel(Iterator(array.end())));
+    std::ranges::filter_view view(std::move(v), AlwaysTrue{});
+    auto const it = view.begin();
+    auto const sent = view.end();
+    std::same_as<bool> decltype(auto) result = (it == sent);
+    assert(!result);
+  }
+  {
+    View v(Iterator(array.begin()), Sentinel(Iterator(array.end())));
+    std::ranges::filter_view view(std::move(v), [](auto) { return false; });
+    auto const it = view.begin();
+    auto const sent = view.end();
+    std::same_as<bool> decltype(auto) result = (it == sent);
+    assert(result);
+  }
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..3ce60f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/ctor.default.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// filter_view<V>::<sentinel>() = default;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterSentinel = std::ranges::sentinel_t<FilterView>;
+  FilterSentinel sent1{};
+  FilterSentinel sent2;
+  assert(base(base(sent1.base())) == base(base(sent2.base())));
+  static_assert(noexcept(FilterSentinel()));
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/ctor.parent.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/ctor.parent.pass.cpp
new file mode 100644
index 0000000..69bd960
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/sentinel/ctor.parent.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit sentinel(filter_view&);
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class Iterator, class Sentinel = sentinel_wrapper<Iterator>>
+constexpr void test() {
+  using View = minimal_view<Iterator, Sentinel>;
+  using FilterView = std::ranges::filter_view<View, AlwaysTrue>;
+  using FilterSentinel = std::ranges::sentinel_t<FilterView>;
+
+  auto make_filter_view = [](auto begin, auto end, auto pred) {
+    View view{Iterator(begin), Sentinel(Iterator(end))};
+    return FilterView(std::move(view), pred);
+  };
+
+  std::array<int, 5> array{0, 1, 2, 3, 4};
+  FilterView view = make_filter_view(array.begin(), array.end(), AlwaysTrue{});
+
+  FilterSentinel sent(view);
+  assert(base(base(sent.base())) == base(base(view.end().base())));
+
+  static_assert(!std::is_constructible_v<FilterSentinel, FilterView const&>);
+  static_assert(!std::is_constructible_v<FilterSentinel, FilterView>);
+  static_assert( std::is_constructible_v<FilterSentinel, FilterView&> &&
+                !std::is_convertible_v<FilterView&, FilterSentinel>);
+}
+
+constexpr bool tests() {
+  test<cpp17_input_iterator<int*>>();
+  test<cpp20_input_iterator<int*>>();
+  test<forward_iterator<int*>>();
+  test<bidirectional_iterator<int*>>();
+  test<random_access_iterator<int*>>();
+  test<contiguous_iterator<int*>>();
+  test<int*>();
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/types.h
new file mode 100644
index 0000000..afac161
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.filter/types.h
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_FILTER_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_FILTER_TYPES_H
+
+#include <ranges>
+#include <utility>
+
+struct TrackInitialization {
+  constexpr explicit TrackInitialization(bool* moved, bool* copied) : moved_(moved), copied_(copied) { }
+  constexpr TrackInitialization(TrackInitialization const& other) : moved_(other.moved_), copied_(other.copied_) {
+    *copied_ = true;
+  }
+  constexpr TrackInitialization(TrackInitialization&& other) : moved_(other.moved_), copied_(other.copied_) {
+    *moved_ = true;
+  }
+  TrackInitialization& operator=(TrackInitialization const&) = default;
+  TrackInitialization& operator=(TrackInitialization&&) = default;
+  bool* moved_;
+  bool* copied_;
+};
+
+struct AlwaysTrue {
+  template <typename T>
+  constexpr bool operator()(T const&) const { return true; }
+};
+
+template <class Iterator, class Sentinel>
+struct minimal_view : std::ranges::view_base {
+  constexpr explicit minimal_view(Iterator it, Sentinel sent)
+    : it_(base(std::move(it)))
+    , sent_(base(std::move(sent)))
+  { }
+
+  minimal_view(minimal_view&&) = default;
+  minimal_view& operator=(minimal_view&&) = default;
+
+  constexpr Iterator begin() const { return Iterator(it_); }
+  constexpr Sentinel end() const { return Sentinel(sent_); }
+
+private:
+  decltype(base(std::declval<Iterator>())) it_;
+  decltype(base(std::declval<Sentinel>())) sent_;
+};
+
+template <bool IsNoexcept>
+class NoexceptIterMoveInputIterator {
+  int *it_;
+
+public:
+  using iterator_category = std::input_iterator_tag;
+  using value_type = int;
+  using difference_type = typename std::iterator_traits<int *>::difference_type;
+  using pointer = int*;
+  using reference = int&;
+
+  NoexceptIterMoveInputIterator() = default;
+  explicit constexpr NoexceptIterMoveInputIterator(int *it) : it_(it) {}
+
+  friend constexpr decltype(auto) iter_move(const NoexceptIterMoveInputIterator& it) noexcept(IsNoexcept) {
+    return std::ranges::iter_move(it.it_);
+  }
+
+  friend constexpr int* base(const NoexceptIterMoveInputIterator& i) { return i.it_; }
+
+  constexpr reference operator*() const { return *it_; }
+  constexpr NoexceptIterMoveInputIterator& operator++() {++it_; return *this;}
+  constexpr NoexceptIterMoveInputIterator operator++(int)
+  { NoexceptIterMoveInputIterator tmp(*this); ++(*this); return tmp; }
+};
+
+template <bool IsNoexcept>
+class NoexceptIterSwapInputIterator {
+  int *it_;
+
+public:
+  using iterator_category = std::input_iterator_tag;
+  using value_type = int;
+  using difference_type = typename std::iterator_traits<int *>::difference_type;
+  using pointer = int*;
+  using reference = int&;
+
+  NoexceptIterSwapInputIterator() = default;
+  explicit constexpr NoexceptIterSwapInputIterator(int *it) : it_(it) {}
+
+  friend constexpr void iter_swap(const NoexceptIterSwapInputIterator& a, const NoexceptIterSwapInputIterator& b) noexcept(IsNoexcept) {
+    return std::ranges::iter_swap(a.it_, b.it_);
+  }
+
+  friend constexpr int* base(const NoexceptIterSwapInputIterator& i) { return i.it_; }
+
+  constexpr reference operator*() const { return *it_; }
+  constexpr NoexceptIterSwapInputIterator& operator++() {++it_; return *this;}
+  constexpr NoexceptIterSwapInputIterator operator++(int)
+  { NoexceptIterSwapInputIterator tmp(*this); ++(*this); return tmp; }
+};
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_FILTER_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/adaptor.pass.cpp
new file mode 100644
index 0000000..9beb3d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/adaptor.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::join
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+
+#include "types.h"
+
+struct MoveOnlyOuter : SimpleForwardCommonOuter<ForwardCommonInner> {
+  using SimpleForwardCommonOuter<ForwardCommonInner>::SimpleForwardCommonOuter;
+
+  constexpr MoveOnlyOuter(MoveOnlyOuter&&) = default;
+  constexpr MoveOnlyOuter(const MoveOnlyOuter&) = delete;
+
+  constexpr MoveOnlyOuter& operator=(MoveOnlyOuter&&) = default;
+  constexpr MoveOnlyOuter& operator=(const MoveOnlyOuter&) = delete;
+};
+
+struct Foo {
+  int i;
+  constexpr Foo(int ii) : i(ii) {}
+};
+
+template <class View, class T>
+concept CanBePiped = requires(View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+constexpr bool test() {
+  int buffer1[3] = {1, 2, 3};
+  int buffer2[2] = {4, 5};
+  int buffer3[4] = {6, 7, 8, 9};
+  Foo nested[2][3][3] = {{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}, {{10, 11, 12}, {13, 14, 15}, {16, 17, 18}}};
+
+  {
+    // Test `views::join(v)`
+    ForwardCommonInner inners[3] = {buffer1, buffer2, buffer3};
+    using Result = std::ranges::join_view<std::ranges::ref_view<ForwardCommonInner[3]>>;
+    std::same_as<Result> decltype(auto) v = std::views::join(inners);
+    assert(std::ranges::next(v.begin(), 9) == v.end());
+    assert(&(*v.begin()) == buffer1);
+  }
+
+  {
+    // Test `views::join(move-only-view)`
+    ForwardCommonInner inners[3] = {buffer1, buffer2, buffer3};
+    using Result = std::ranges::join_view<MoveOnlyOuter>;
+    std::same_as<Result> decltype(auto) v = std::views::join(MoveOnlyOuter{inners});
+    assert(std::ranges::next(v.begin(), 9) == v.end());
+    assert(&(*v.begin()) == buffer1);
+
+    static_assert(std::invocable<decltype(std::views::join), MoveOnlyOuter>);
+    static_assert(!std::invocable<decltype(std::views::join), MoveOnlyOuter&>);
+  }
+
+  {
+    // LWG3474 Nesting `join_views` is broken because of CTAD
+    // views::join(join_view) should join the view instead of calling copy constructor
+    auto jv = std::views::join(nested);
+    ASSERT_SAME_TYPE(std::ranges::range_reference_t<decltype(jv)>, Foo(&)[3]);
+
+    auto jv2 = std::views::join(jv);
+    ASSERT_SAME_TYPE(std::ranges::range_reference_t<decltype(jv2)>, Foo&);
+
+    assert(&(*jv2.begin()) == &nested[0][0][0]);
+  }
+
+  {
+    // Test `v | views::join`
+    ForwardCommonInner inners[3] = {buffer1, buffer2, buffer3};
+
+    using Result = std::ranges::join_view<std::ranges::ref_view<ForwardCommonInner[3]>>;
+    std::same_as<Result> decltype(auto) v = inners | std::views::join;
+    assert(std::ranges::next(v.begin(), 9) == v.end());
+    assert(&(*v.begin()) == buffer1);
+    static_assert(CanBePiped<decltype((inners)), decltype((std::views::join))>);
+  }
+
+  {
+    // Test `move-only-view | views::join`
+    ForwardCommonInner inners[3] = {buffer1, buffer2, buffer3};
+    using Result = std::ranges::join_view<MoveOnlyOuter>;
+    std::same_as<Result> decltype(auto) v = MoveOnlyOuter{inners} | std::views::join;
+    assert(std::ranges::next(v.begin(), 9) == v.end());
+    assert(&(*v.begin()) == buffer1);
+
+    static_assert(CanBePiped<MoveOnlyOuter, decltype((std::views::join))>);
+    static_assert(!CanBePiped<MoveOnlyOuter&, decltype((std::views::join))>);
+  }
+
+  {
+    // LWG3474 Nesting `join_views` is broken because of CTAD
+    // join_view | views::join should join the view instead of calling copy constructor
+    auto jv = nested | std::views::join | std::views::join;
+    ASSERT_SAME_TYPE(std::ranges::range_reference_t<decltype(jv)>, Foo&);
+
+    assert(&(*jv.begin()) == &nested[0][0][0]);
+    static_assert(CanBePiped<decltype((nested)), decltype((std::views::join))>);
+  }
+
+  {
+    // Test `adaptor | views::join`
+    auto join_twice = std::views::join | std::views::join;
+    auto jv = nested | join_twice;
+    ASSERT_SAME_TYPE(std::ranges::range_reference_t<decltype(jv)>, Foo&);
+
+    assert(&(*jv.begin()) == &nested[0][0][0]);
+    static_assert(CanBePiped<decltype((nested)), decltype((join_twice))>);
+  }
+
+  {
+    static_assert(!CanBePiped<int, decltype((std::views::join))>);
+    static_assert(!CanBePiped<Foo, decltype((std::views::join))>);
+    static_assert(!CanBePiped<int(&)[2], decltype((std::views::join))>);
+    static_assert(CanBePiped<int(&)[2][2], decltype((std::views::join))>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/base.pass.cpp
new file mode 100644
index 0000000..caf018b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/base.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const& requires copy_constructible<V>;
+// constexpr V base() &&;
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool hasLValueQualifiedBase(auto&& view) {
+    return requires { view.base(); };
+}
+
+constexpr bool test() {
+  int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
+
+  {
+    ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(std::move(jv).base().ptr_ == children);
+
+    static_assert(!hasLValueQualifiedBase(jv));
+    ASSERT_SAME_TYPE(decltype(std::move(jv).base()), ParentView<ChildView>);
+  }
+
+  {
+    std::ranges::join_view jv(buffer);
+    assert(jv.base().base() == buffer + 0);
+
+    static_assert(hasLValueQualifiedBase(jv));
+    ASSERT_SAME_TYPE(decltype(jv.base()), std::ranges::ref_view<int [4][4]>);
+  }
+
+  {
+    const std::ranges::join_view jv(buffer);
+    assert(jv.base().base() == buffer + 0);
+
+    static_assert(hasLValueQualifiedBase(jv));
+    ASSERT_SAME_TYPE(decltype(jv.base()), std::ranges::ref_view<int [4][4]>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/begin.pass.cpp
new file mode 100644
index 0000000..332973d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/begin.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin();
+// constexpr auto begin() const
+//    requires input_range<const V> &&
+//             is_reference_v<range_reference_t<const V>>;
+
+#include <cassert>
+#include <ranges>
+
+#include "types.h"
+
+struct NonSimpleParentView : std::ranges::view_base {
+  ChildView* begin() { return nullptr; }
+  const ChildView* begin() const;
+  const ChildView* end() const;
+};
+
+struct SimpleParentView : std::ranges::view_base {
+  const ChildView* begin() const;
+  const ChildView* end() const;
+};
+
+struct ConstNotRange : std::ranges::view_base {
+  const ChildView* begin();
+  const ChildView* end();
+};
+static_assert(std::ranges::range<ConstNotRange>);
+static_assert(!std::ranges::range<const ConstNotRange>);
+
+template <class T>
+concept HasConstBegin = requires(const T& t) { t.begin(); };
+
+constexpr bool test() {
+  int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
+
+  {
+    ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(*jv.begin() == 1111);
+  }
+
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 4), CopyableChild(buffer[1], 0), CopyableChild(buffer[2], 1),
+                                 CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(*jv.begin() == 1111);
+  }
+
+  // Parent is empty.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]),
+                                 CopyableChild(buffer[3])};
+    std::ranges::join_view jv(ParentView(children, 0));
+    assert(jv.begin() == jv.end());
+  }
+
+  // Parent size is one.
+  {
+    CopyableChild children[1] = {CopyableChild(buffer[0])};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(*jv.begin() == 1111);
+  }
+
+  // Parent and child size is one.
+  {
+    CopyableChild children[1] = {CopyableChild(buffer[0], 1)};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(*jv.begin() == 1111);
+  }
+
+  // Parent size is one child is empty
+  {
+    CopyableChild children[1] = {CopyableChild(buffer[0], 0)};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(jv.begin() == jv.end());
+  }
+
+  // Has all empty children.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 0), CopyableChild(buffer[1], 0), CopyableChild(buffer[2], 0),
+                                 CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(jv.begin() == jv.end());
+  }
+
+  // First child is empty, others are not.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 4), CopyableChild(buffer[1], 0), CopyableChild(buffer[2], 0),
+                                 CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(*jv.begin() == 1111);
+  }
+
+  // Last child is empty, others are not.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 4), CopyableChild(buffer[1], 4), CopyableChild(buffer[2], 4),
+                                 CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(*jv.begin() == 1111);
+  }
+
+  {
+    std::ranges::join_view jv(buffer);
+    assert(*jv.begin() == 1111);
+  }
+
+  {
+    const std::ranges::join_view jv(buffer);
+    assert(*jv.begin() == 1111);
+    static_assert(HasConstBegin<decltype(jv)>);
+  }
+
+  // !input_range<const V>
+  {
+    std::ranges::join_view jv{ConstNotRange{}};
+    static_assert(!HasConstBegin<decltype(jv)>);
+  }
+
+  // !is_reference_v<range_reference_t<const V>>
+  {
+    auto innerRValueRange = std::views::iota(0, 5) | std::views::transform([](int) { return ChildView{}; });
+    static_assert(!std::is_reference_v<std::ranges::range_reference_t<const decltype(innerRValueRange)>>);
+    std::ranges::join_view jv{innerRValueRange};
+    static_assert(!HasConstBegin<decltype(jv)>);
+  }
+
+  // !simple-view<V>
+  {
+    std::ranges::join_view<NonSimpleParentView> jv;
+    static_assert(!std::same_as<decltype(jv.begin()), decltype(std::as_const(jv).begin())>);
+  }
+
+  // simple-view<V> && is_reference_v<range_reference_t<V>>;
+  {
+    std::ranges::join_view<SimpleParentView> jv;
+    static_assert(std::same_as<decltype(jv.begin()), decltype(std::as_const(jv).begin())>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctad.compile.pass.cpp
new file mode 100644
index 0000000..a8eafc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctad.compile.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+//   explicit join_view(R&&) -> join_view<views::all_t<R>>;
+
+#include <ranges>
+#include <utility>
+
+struct Child {
+  int *begin() const;
+  int *end() const;
+};
+
+struct View : std::ranges::view_base {
+  Child *begin() const;
+  Child *end() const;
+};
+
+struct Range {
+  Child *begin() const;
+  Child *end() const;
+};
+
+struct BorrowedRange {
+  Child *begin() const;
+  Child *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+struct NestedChildren : std::ranges::view_base {
+  View* begin() const;
+  View* end() const;
+};
+
+void testCTAD() {
+    View v;
+    Range r;
+    BorrowedRange br;
+
+    static_assert(std::same_as<
+        decltype(std::ranges::join_view(v)),
+        std::ranges::join_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::join_view(std::move(v))),
+        std::ranges::join_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::join_view(r)),
+        std::ranges::join_view<std::ranges::ref_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::join_view(std::move(r))),
+        std::ranges::join_view<std::ranges::owning_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::join_view(br)),
+        std::ranges::join_view<std::ranges::ref_view<BorrowedRange>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::join_view(std::move(br))),
+        std::ranges::join_view<std::ranges::owning_view<BorrowedRange>>
+    >);
+
+    NestedChildren n;
+    std::ranges::join_view jv(n);
+
+    // CTAD generated from the copy constructor instead of joining the join_view
+    static_assert(std::same_as< decltype(std::ranges::join_view(jv)), decltype(jv) >);
+
+    // CTAD generated from the move constructor instead of joining the join_view
+    static_assert(std::same_as< decltype(std::ranges::join_view(std::move(jv))), decltype(jv) >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctad.verify.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctad.verify.cpp
new file mode 100644
index 0000000..2c6eea5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctad.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+//   explicit join_view(R&&) -> join_view<views::all_t<R>>;
+
+// Tests that the deduction guide is explicit.
+
+#include <ranges>
+
+#include "test_iterators.h"
+
+template<class T>
+struct Range {
+  friend T* begin(Range&) { return nullptr; }
+  friend T* begin(Range const&) { return nullptr; }
+  friend sentinel_wrapper<T*> end(Range&) { return sentinel_wrapper<T*>(nullptr); }
+  friend sentinel_wrapper<T*> end(Range const&) { return sentinel_wrapper<T*>(nullptr); }
+};
+
+void testExplicitCTAD() {
+  Range<Range<int>> r;
+  std::ranges::join_view v = r; // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'join_view'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctor.default.pass.cpp
new file mode 100644
index 0000000..0daff7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctor.default.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// join_view() requires default_initializable<V> = default;
+
+#include <cassert>
+#include <ranges>
+
+#include "types.h"
+
+struct DefaultView : std::ranges::view_base {
+  int i; // deliberately uninitialised
+
+  ChildView* begin() const;
+  ChildView* end() const;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::join_view<ParentView<ChildView>> jv;
+    assert(std::move(jv).base().ptr_ == globalChildren);
+  }
+
+  // Default constructor should value initialise underlying view
+  {
+    std::ranges::join_view<DefaultView> jv;
+    assert(jv.base().i == 0);
+  }
+
+  static_assert( std::default_initializable<std::ranges::join_view<ParentView<ChildView>>>);
+  static_assert(!std::default_initializable<std::ranges::join_view<CopyableParent>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctor.view.pass.cpp
new file mode 100644
index 0000000..75d4c7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/ctor.view.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit join_view(V base);
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
+
+  {
+    ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
+    auto jv = std::ranges::join_view(ParentView{children});
+    assert(std::move(jv).base().ptr_ == children);
+  }
+
+  {
+    std::ranges::join_view jv(buffer);
+    assert(jv.base().base() == buffer + 0);
+  }
+
+  {
+    // Test explicitness.
+    static_assert( std::is_constructible_v<std::ranges::join_view<ParentView<ChildView>>, ParentView<ChildView>>);
+    static_assert(!std::is_convertible_v<std::ranges::join_view<ParentView<ChildView>>, ParentView<ChildView>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/end.pass.cpp
new file mode 100644
index 0000000..5e49618
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/end.pass.cpp
@@ -0,0 +1,298 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end();
+// constexpr auto end() const;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "types.h"
+
+template <class T>
+concept HasConstEnd = requires (const T& t){
+  t.end();
+};
+
+
+// | ID | outer  | outer   | outer  | inner | inner   | inner  |     end()     |    end()     |
+// |    | simple | forward | common | l_ref | forward | common |               |    const     |
+// |----|--------|---------|--------|-------|---------|--------|---------------|--------------|
+// | 1  |   Y    |   Y     |   Y    |   Y   |    Y    |   Y    |iterator<true> |iterator<true>|
+// | 2  |   Y    |   Y     |   Y    |   Y   |    Y    |   N    |sentinel<true> |sentinel<true>|
+// | 3  |   Y    |   Y     |   Y    |   Y   |    N    |   Y    |sentinel<true> |sentinel<true>|
+// | 4  |   Y    |   Y     |   Y    |   N   |    Y    |   Y    |sentinel<true> |      -       |
+// | 5  |   Y    |   Y     |   N    |   Y   |    Y    |   Y    |sentinel<true> |sentinel<true>|
+// | 6  |   Y    |   N     |   Y    |   Y   |    Y    |   Y    |sentinel<true> |sentinel<true>|
+// | 7  |   N    |   Y     |   Y    |   Y   |    Y    |   Y    |iterator<false>|iterator<true>|
+// | 8  |   N    |   Y     |   Y    |   Y   |    Y    |   N    |sentinel<false>|sentinel<true>|
+// | 9  |   N    |   Y     |   Y    |   Y   |    N    |   Y    |sentinel<false>|sentinel<true>|
+// | 10 |   N    |   Y     |   Y    |   N   |    Y    |   Y    |sentinel<false>|      -       |
+// | 11 |   N    |   Y     |   N    |   Y   |    Y    |   Y    |sentinel<false>|sentinel<true>|
+// | 12 |   N    |   N     |   Y    |   Y   |    Y    |   Y    |sentinel<false>|sentinel<true>|
+//
+//
+
+struct ConstNotRange : std::ranges::view_base {
+  const ChildView* begin();
+  const ChildView* end();
+};
+
+constexpr bool test() {
+  int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
+
+  {
+    // test ID 1
+    ForwardCommonInner inners[4] = {buffer[0], buffer[1], buffer[2], buffer[3]};
+    SimpleForwardCommonOuter<ForwardCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(std::ranges::common_range<decltype(jv)>);
+    static_assert(std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 2
+    ForwardNonCommonInner inners[3] = {buffer[0], buffer[1], buffer[2]};
+    SimpleForwardCommonOuter<ForwardNonCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 12));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 3
+    InputCommonInner inners[3] = {buffer[0], buffer[1], buffer[2]};
+    SimpleForwardCommonOuter<InputCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 12));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 4
+    ForwardCommonInner inners[2] = {buffer[0], buffer[1]};
+    InnerRValue<SimpleForwardCommonOuter<ForwardCommonInner>> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 8));
+
+    static_assert(!HasConstEnd<decltype(jv)>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 5
+    ForwardCommonInner inners[4] = {buffer[0], buffer[1], buffer[2], buffer[3]};
+    SimpleForwardNonCommonOuter<ForwardCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 6
+    ForwardCommonInner inners[4] = {buffer[0], buffer[1], buffer[2], buffer[3]};
+    SimpleInputCommonOuter<ForwardCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 7
+    ForwardCommonInner inners[1] = {buffer[0]};
+    NonSimpleForwardCommonOuter<ForwardCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 4));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 4));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(!std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(std::ranges::common_range<decltype(jv)>);
+    static_assert(std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 8
+    ForwardNonCommonInner inners[3] = {buffer[0], buffer[1], buffer[2]};
+    NonSimpleForwardCommonOuter<ForwardNonCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 12));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(!std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 9
+    InputCommonInner inners[3] = {buffer[0], buffer[1], buffer[2]};
+    NonSimpleForwardCommonOuter<InputCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 12));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 12));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(!std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 10
+    ForwardCommonInner inners[2] = {buffer[0], buffer[1]};
+    InnerRValue<NonSimpleForwardCommonOuter<ForwardCommonInner>> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 8));
+
+    static_assert(!HasConstEnd<decltype(jv)>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 11
+    ForwardCommonInner inners[4] = {buffer[0], buffer[1], buffer[2], buffer[3]};
+    NonSimpleForwardNonCommonOuter<ForwardCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(!std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    // test ID 12
+    ForwardCommonInner inners[4] = {buffer[0], buffer[1], buffer[2], buffer[3]};
+    NonSimpleInputCommonOuter<ForwardCommonInner> outer{inners};
+
+    std::ranges::join_view jv(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+    assert(std::as_const(jv).end() == std::ranges::next(std::as_const(jv).begin(), 16));
+
+    static_assert(HasConstEnd<decltype(jv)>);
+    static_assert(!std::same_as<decltype(jv.end()), decltype(std::as_const(jv).end())>);
+    static_assert(!std::ranges::common_range<decltype(jv)>);
+    static_assert(!std::ranges::common_range<const decltype(jv)>);
+  }
+
+  {
+    std::ranges::join_view jv(ConstNotRange{});
+    static_assert(!HasConstEnd<decltype(jv)>);
+  }
+
+  // Has some empty children.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 4), CopyableChild(buffer[1], 0), CopyableChild(buffer[2], 1), CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.end() == std::ranges::next(jv.begin(), 5));
+  }
+
+  // Parent is empty.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]), CopyableChild(buffer[3])};
+    std::ranges::join_view jv(ParentView(children, 0));
+    assert(jv.end() == jv.begin());
+  }
+
+  // Parent size is one.
+  {
+    CopyableChild children[1] = {CopyableChild(buffer[0])};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(jv.end() == std::ranges::next(jv.begin(), 4));
+  }
+
+  // Parent and child size is one.
+  {
+    CopyableChild children[1] = {CopyableChild(buffer[0], 1)};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(jv.end() == std::ranges::next(jv.begin()));
+  }
+
+  // Parent size is one child is empty
+  {
+    CopyableChild children[1] = {CopyableChild(buffer[0], 0)};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(jv.end() == jv.begin());
+  }
+
+  // Has all empty children.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 0), CopyableChild(buffer[1], 0), CopyableChild(buffer[2], 0), CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.end() == jv.begin());
+  }
+
+  // First child is empty, others are not.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 4), CopyableChild(buffer[1], 0), CopyableChild(buffer[2], 0), CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.end() == std::ranges::next(jv.begin(), 4));
+  }
+
+  // Last child is empty, others are not.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0], 4), CopyableChild(buffer[1], 4), CopyableChild(buffer[2], 4), CopyableChild(buffer[3], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.end() == std::ranges::next(jv.begin(), 12));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/general.pass.cpp
new file mode 100644
index 0000000..f92eb41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/general.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// General tests for join_view. This file does not test anything specifically.
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <string>
+#include <vector>
+
+#include "types.h"
+
+template <class R, class I>
+bool isEqual(R& r, I i) {
+  for (auto e : r)
+    if (e != *i++)
+      return false;
+  return true;
+}
+
+int main(int, char**) {
+  {
+    int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
+    int* flattened = reinterpret_cast<int*>(buffer);
+
+    ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(isEqual(jv, flattened));
+  }
+
+  {
+    std::vector<std::string> vec = {"Hello", ",", " ", "World", "!"};
+    std::string check = "Hello, World!";
+    std::ranges::join_view jv(vec);
+    assert(isEqual(jv, check.begin()));
+  }
+
+  {
+    // P2328R1 join_view should join all views of ranges
+    // join a range of prvalue containers
+    std::vector x{1, 2, 3, 4};
+    auto y = x | std::views::transform([](auto i) {
+               std::vector<int> v(i);
+               for (int& ii : v) {
+                 ii = i;
+               }
+               return v;
+             });
+
+    std::ranges::join_view jv(y);
+    std::vector<int> check{1, 2, 2, 3, 3, 3, 4, 4, 4, 4};
+    assert(isEqual(jv, check.begin()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/arrow.pass.cpp
new file mode 100644
index 0000000..ddcf66b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/arrow.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr InnerIter operator->() const
+//   requires has-arrow<InnerIter> && copyable<InnerIter>;
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+template <class T>
+concept HasArrow = std::input_iterator<T> && (std::is_pointer_v<T> || requires(T i) { i.operator->(); });
+
+template <class Base>
+struct move_only_input_iter_with_arrow {
+  Base it_;
+
+  using value_type = std::iter_value_t<Base>;
+  using difference_type = std::intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  constexpr move_only_input_iter_with_arrow(Base it) : it_(std::move(it)) {}
+  constexpr move_only_input_iter_with_arrow(move_only_input_iter_with_arrow&&) = default;
+  constexpr move_only_input_iter_with_arrow(const move_only_input_iter_with_arrow&) = delete;
+  constexpr move_only_input_iter_with_arrow& operator=(move_only_input_iter_with_arrow&&) = default;
+  constexpr move_only_input_iter_with_arrow& operator=(const move_only_input_iter_with_arrow&) = delete;
+
+  constexpr move_only_input_iter_with_arrow& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++it_; }
+
+  constexpr std::iter_reference_t<Base> operator*() const { return *it_; }
+  constexpr auto operator->() const
+    requires(HasArrow<Base> && std::copyable<Base>) {
+    return it_;
+  }
+};
+static_assert(!std::copyable<move_only_input_iter_with_arrow<int*>>);
+static_assert(std::input_iterator<move_only_input_iter_with_arrow<int*>>);
+
+template <class Base>
+struct move_iter_sentinel {
+  Base it_;
+  explicit move_iter_sentinel() = default;
+  constexpr move_iter_sentinel(Base it) : it_(std::move(it)) {}
+  constexpr bool operator==(const move_only_input_iter_with_arrow<Base>& other) const { return it_ == other.it_; }
+};
+static_assert(std::sentinel_for<move_iter_sentinel<int*>, move_only_input_iter_with_arrow<int*>>);
+
+struct MoveOnlyIterInner : BufferView<move_only_input_iter_with_arrow<Box*>, move_iter_sentinel<Box*>> {
+  using BufferView::BufferView;
+
+  using iterator = move_only_input_iter_with_arrow<Box*>;
+  using sentinel = move_iter_sentinel<Box*>;
+
+  iterator begin() const { return data_; }
+  sentinel end() const { return sentinel{data_ + size_}; }
+};
+static_assert(std::ranges::input_range<MoveOnlyIterInner>);
+
+template <class Base>
+struct arrow_input_iter {
+  Base it_;
+
+  using value_type = std::iter_value_t<Base>;
+  using difference_type = std::intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  arrow_input_iter() = default;
+  constexpr arrow_input_iter(Base it) : it_(std::move(it)) {}
+
+  constexpr arrow_input_iter& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++it_; }
+
+  constexpr std::iter_reference_t<Base> operator*() const { return *it_; }
+  constexpr auto operator->() const { return it_; }
+
+  friend constexpr bool operator==(const arrow_input_iter& x, const arrow_input_iter& y) = default;
+};
+
+using ArrowInner = BufferView<arrow_input_iter<Box*>>;
+static_assert(std::ranges::input_range<ArrowInner>);
+static_assert(HasArrow<std::ranges::iterator_t<ArrowInner>>);
+
+constexpr bool test() {
+  Box buffer[4][4] = {{{1111}, {2222}, {3333}, {4444}},
+                      {{555}, {666}, {777}, {888}},
+                      {{99}, {1010}, {1111}, {1212}},
+                      {{13}, {14}, {15}, {16}}};
+
+  {
+    // Copyable input iterator with arrow.
+    using BoxView = ValueView<Box>;
+    ValueView<Box> children[4] = {BoxView(buffer[0]), BoxView(buffer[1]), BoxView(buffer[2]), BoxView(buffer[3])};
+    std::ranges::join_view jv(ValueView<ValueView<Box>>{children});
+    assert(jv.begin()->x == 1111);
+    static_assert(HasArrow<decltype(jv.begin())>);
+  }
+
+  {
+    std::ranges::join_view jv(buffer);
+    assert(jv.begin()->x == 1111);
+    static_assert(HasArrow<decltype(jv.begin())>);
+  }
+
+  {
+    const std::ranges::join_view jv(buffer);
+    assert(jv.begin()->x == 1111);
+    static_assert(HasArrow<decltype(jv.begin())>);
+  }
+
+  {
+    // LWG3500 `join_view::iterator::operator->()` is bogus
+    // `operator->` should not be defined if inner iterator is not copyable
+    // has-arrow<InnerIter> && !copyable<InnerIter>
+    static_assert(HasArrow<move_only_input_iter_with_arrow<int*>>);
+    MoveOnlyIterInner inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv{inners};
+    static_assert(HasArrow<decltype(std::ranges::begin(inners[0]))>);
+    static_assert(!HasArrow<decltype(jv.begin())>);
+  }
+
+  {
+    // LWG3500 `join_view::iterator::operator->()` is bogus
+    // `operator->` should not be defined if inner iterator does not have `operator->`
+    // !has-arrow<InnerIter> && copyable<InnerIter>
+    using Inner = BufferView<forward_iterator<Box*>>;
+    Inner inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv{inners};
+    static_assert(!HasArrow<decltype(std::ranges::begin(inners[0]))>);
+    static_assert(!HasArrow<decltype(jv.begin())>);
+  }
+
+  {
+    // arrow returns inner iterator
+    ArrowInner inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv{inners};
+    static_assert(HasArrow<decltype(std::ranges::begin(inners[0]))>);
+    static_assert(HasArrow<decltype(jv.begin())>);
+
+    auto jv_it = jv.begin();
+    std::same_as<arrow_input_iter<Box*>> auto arrow_it = jv_it.operator->();
+    assert(arrow_it->x == 1111);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.default.pass.cpp
new file mode 100644
index 0000000..2f9bbb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.default.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator() requires default_initializable<OuterIter> = default;
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include "test_iterators.h"
+#include "../types.h"
+
+template <class It>
+struct view : std::ranges::view_base {
+  It begin() const;
+  sentinel_wrapper<It> end() const;
+};
+
+template <class It>
+constexpr void test_default_constructible() {
+  using JoinView = std::ranges::join_view<view<It>>;
+  using JoinIterator = std::ranges::iterator_t<JoinView>;
+  static_assert(std::is_default_constructible_v<JoinIterator>);
+  JoinIterator it; (void)it;
+}
+
+template <class It>
+constexpr void test_non_default_constructible() {
+  using JoinView = std::ranges::join_view<view<It>>;
+  using JoinIterator = std::ranges::iterator_t<JoinView>;
+  static_assert(!std::is_default_constructible_v<JoinIterator>);
+}
+
+constexpr bool test() {
+  test_non_default_constructible<cpp17_input_iterator<ChildView*>>();
+  // NOTE: cpp20_input_iterator can't be used with join_view because it is not copyable.
+  test_default_constructible<forward_iterator<ChildView*>>();
+  test_default_constructible<bidirectional_iterator<ChildView*>>();
+  test_default_constructible<random_access_iterator<ChildView*>>();
+  test_default_constructible<contiguous_iterator<ChildView*>>();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.other.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.other.pass.cpp
new file mode 100644
index 0000000..76abcd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.other.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator(iterator<!Const> i)
+//             requires Const &&
+//                      convertible_to<iterator_t<V>, OuterIter> &&
+//                      convertible_to<iterator_t<InnerRng>, InnerIter>;
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+using ConstCompatibleInner = BufferView<int*>;
+
+using ConstIncompatibleInner = BufferView<forward_iterator<const int*>, forward_iterator<const int*>,
+                                          bidirectional_iterator<int*>, bidirectional_iterator<int*>>;
+
+template <class Inner>
+using ConstCompatibleOuter = BufferView<const Inner*, const Inner*, Inner*, Inner*>;
+
+template <class Inner>
+using ConstIncompatibleOuter = BufferView<forward_iterator<const Inner*>, forward_iterator<const Inner*>,
+                                          bidirectional_iterator<Inner*>, bidirectional_iterator<Inner*>>;
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]),
+                                 CopyableChild(buffer[3])};
+    std::ranges::join_view jv(CopyableParent{children});
+    auto iter1 = jv.begin();
+    using iterator = decltype(iter1);
+    using const_iterator = decltype(std::as_const(jv).begin());
+    static_assert(!std::is_same_v<iterator, const_iterator>);
+    const_iterator iter2 = iter1;
+    assert(iter1 == iter2);
+
+    // We cannot create a non-const iterator from a const iterator.
+    static_assert(!std::constructible_from<iterator, const_iterator>);
+  }
+
+  // !convertible_to<inner_iterator, inner_const_iterator>>;
+  {
+    ConstIncompatibleInner inners[2] = {buffer[0], buffer[1]};
+    ConstCompatibleOuter<ConstIncompatibleInner> outer{inners};
+    std::ranges::join_view jv(outer);
+    using iterator = decltype(jv.begin());
+    using const_iterator = decltype(std::as_const(jv).begin());
+    static_assert(!std::is_same_v<iterator, const_iterator>);
+
+    static_assert(!std::constructible_from<const_iterator, iterator>);
+    static_assert(!std::constructible_from<iterator, const_iterator>);
+  }
+
+  // !convertible_to<outer_iterator, outer_const_iterator>>;
+  {
+    ConstCompatibleInner inners[2] = {buffer[0], buffer[1]};
+    ConstIncompatibleOuter<ConstCompatibleInner> outer{inners};
+    std::ranges::join_view jv(outer);
+    using iterator = decltype(jv.begin());
+    using const_iterator = decltype(std::as_const(jv).begin());
+    static_assert(!std::is_same_v<iterator, const_iterator>);
+
+    static_assert(!std::constructible_from<const_iterator, iterator>);
+    static_assert(!std::constructible_from<iterator, const_iterator>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.parent.outer.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.parent.outer.pass.cpp
new file mode 100644
index 0000000..7cca16a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/ctor.parent.outer.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator(Parent& parent, OuterIter outer);
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+using NonDefaultCtrIter = cpp20_input_iterator<int*>;
+static_assert(!std::default_initializable<NonDefaultCtrIter>);
+
+using NonDefaultCtrIterView = BufferView<NonDefaultCtrIter, sentinel_wrapper<NonDefaultCtrIter>>;
+static_assert(std::ranges::input_range<NonDefaultCtrIterView>);
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]),
+                                 CopyableChild(buffer[3])};
+    CopyableParent parent{children};
+    std::ranges::join_view jv(parent);
+    std::ranges::iterator_t<decltype(jv)> iter(jv, std::ranges::begin(parent));
+    assert(*iter == 1);
+  }
+
+  {
+    // LWG3569 Inner iterator not default_initializable
+    // With the current spec, the constructor under test invokes Inner iterator's default constructor
+    // even if it is not default constructible
+    // This test is checking that this constructor can be invoked with an inner range with non default
+    // constructible iterator
+    NonDefaultCtrIterView inners[] = {buffer[0], buffer[1]};
+    auto outer = std::views::all(inners);
+    std::ranges::join_view jv(outer);
+    std::ranges::iterator_t<decltype(jv)> iter(jv, std::ranges::begin(outer));
+    assert(*iter == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/decrement.pass.cpp
new file mode 100644
index 0000000..eb2c34c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/decrement.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator--();
+//              requires ref-is-glvalue && bidirectional_range<Base> &&
+//                       bidirectional_range<range_reference_t<Base>> &&
+//                       common_range<range_reference_t<Base>>;
+// constexpr iterator operator--(int);
+//              requires ref-is-glvalue && bidirectional_range<Base> &&
+//                       bidirectional_range<range_reference_t<Base>> &&
+//                       common_range<range_reference_t<Base>>;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+
+#include "../types.h"
+
+template <class T>
+concept CanPreDecrement = requires(T& t) { --t; };
+
+template <class T>
+concept CanPostDecrement = requires(T& t) { t--; };
+
+constexpr void noDecrementTest(auto&& jv) {
+  auto iter = jv.begin();
+  static_assert(!CanPreDecrement<decltype(iter)>);
+  static_assert(!CanPostDecrement<decltype(iter)>);
+}
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+
+  {
+    // outer == ranges::end
+    std::ranges::join_view jv(buffer);
+    auto iter = std::next(jv.begin(), 16);
+    for (int i = 16; i != 0; --i) {
+      assert(*--iter == i);
+    }
+  }
+
+  {
+    // outer == ranges::end
+    std::ranges::join_view jv(buffer);
+    auto iter = std::next(jv.begin(), 13);
+    for (int i = 13; i != 0; --i) {
+      assert(*--iter == i);
+    }
+  }
+
+  {
+    // outer != ranges::end
+    std::ranges::join_view jv(buffer);
+    auto iter = std::next(jv.begin(), 12);
+    for (int i = 12; i != 0; --i) {
+      assert(*--iter == i);
+    }
+  }
+
+  {
+    // outer != ranges::end
+    std::ranges::join_view jv(buffer);
+    auto iter = std::next(jv.begin());
+    for (int i = 1; i != 0; --i) {
+      assert(*--iter == i);
+    }
+  }
+
+  {
+    int small[2][1] = {{1}, {2}};
+    std::ranges::join_view jv(small);
+    auto iter = std::next(jv.begin(), 2);
+    for (int i = 2; i != 0; --i) {
+      assert(*--iter == i);
+    }
+  }
+
+  {
+#if defined(__GNUG__) && !defined(__clang__)
+    // This seems to be a gcc bug where evaluating the following code
+    // at compile time results in wrong array index
+    if (!std::is_constant_evaluated()) {
+#endif
+      // skip empty inner
+      BidiCommonInner inners[4] = {buffer[0], {nullptr, 0}, {nullptr, 0}, buffer[1]};
+      std::ranges::join_view jv(inners);
+      auto iter = jv.end();
+      for (int i = 8; i != 0; --i) {
+        assert(*--iter == i);
+      }
+#if defined(__GNUG__) && !defined(__clang__)
+    }
+#endif
+  }
+
+  {
+    // basic type checking
+    std::ranges::join_view jv(buffer);
+    auto iter1 = std::ranges::next(jv.begin(), 4);
+    using iterator = decltype(iter1);
+
+    decltype(auto) iter2 = --iter1;
+    static_assert(std::same_as<decltype(iter2), iterator&>);
+    assert(&iter1 == &iter2);
+
+    std::same_as<iterator> decltype(auto) iter3 = iter1--;
+    assert(iter3 == std::next(iter1));
+  }
+
+  {
+    // !ref-is-glvalue
+    BidiCommonInner inners[2] = {buffer[0], buffer[1]};
+    InnerRValue<BidiCommonOuter<BidiCommonInner>> outer{inners};
+    std::ranges::join_view jv(outer);
+    noDecrementTest(jv);
+  }
+
+  {
+    // !bidirectional_range<Base>
+    BidiCommonInner inners[2] = {buffer[0], buffer[1]};
+    SimpleForwardCommonOuter<BidiCommonInner> outer{inners};
+    std::ranges::join_view jv(outer);
+    noDecrementTest(jv);
+  }
+
+  {
+    // !bidirectional_range<range_reference_t<Base>>
+    ForwardCommonInner inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv(inners);
+    noDecrementTest(jv);
+  }
+
+  {
+    // LWG3313 `join_view::iterator::operator--` is incorrectly constrained
+    // `join_view::iterator` should not have `operator--` if
+    // !common_range<range_reference_t<Base>>
+    BidiNonCommonInner inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv(inners);
+    auto iter = jv.begin();
+    static_assert(!CanPreDecrement<decltype(iter)>);
+    static_assert(!CanPostDecrement<decltype(iter)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/eq.pass.cpp
new file mode 100644
index 0000000..4885f16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/eq.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const iterator& x, const iterator& y);
+//          requires ref-is-glvalue && equality_comparable<iterator_t<Base>> &&
+//                   equality_comparable<iterator_t<range_reference_t<Base>>>;
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+  {
+    std::ranges::join_view jv(buffer);
+    auto iter1 = jv.begin();
+    auto iter2 = jv.begin();
+    assert(iter1 == iter2);
+    iter1++;
+    assert(iter1 != iter2);
+    iter2++;
+    assert(iter1 == iter2);
+
+    assert(jv.begin() == std::as_const(jv).begin());
+  }
+
+  {
+    // !ref-is-glvalue
+    BidiCommonInner inners[2] = {buffer[0], buffer[1]};
+    InnerRValue<BidiCommonOuter<BidiCommonInner>> outer{inners};
+    std::ranges::join_view jv(outer);
+    auto iter = jv.begin();
+    static_assert(!std::equality_comparable<decltype(iter)>);
+  }
+
+  {
+    // !equality_comparable<iterator_t<Base>>
+    using Inner = BufferView<int*>;
+    using Outer = BufferView<cpp20_input_iterator<Inner*>, sentinel_wrapper<cpp20_input_iterator<Inner*>>>;
+    static_assert(!std::equality_comparable<std::ranges::iterator_t<Outer>>);
+    Inner inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv(Outer{inners});
+    auto iter = jv.begin();
+    static_assert(!std::equality_comparable<decltype(iter)>);
+    auto const_iter = std::as_const(jv).begin();
+    static_assert(!std::equality_comparable<decltype(const_iter)>);
+  }
+
+  {
+    // !equality_comparable<iterator_t<range_reference_t<Base>>>;
+    using Inner = BufferView<cpp20_input_iterator<int*>, sentinel_wrapper<cpp20_input_iterator<int*>>>;
+    Inner inners[1] = {buffer[0]};
+    std::ranges::join_view jv{inners};
+    auto iter = jv.begin();
+    static_assert(!std::equality_comparable<decltype(iter)>);
+    auto const_iter = std::as_const(jv).begin();
+    static_assert(!std::equality_comparable<decltype(const_iter)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/increment.pass.cpp
new file mode 100644
index 0000000..f46edd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/increment.pass.cpp
@@ -0,0 +1,215 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator++();
+// constexpr void operator++(int);
+// constexpr iterator operator++(int)
+//            requires ref-is-glvalue && forward_range<Base> &&
+//                     forward_range<range_reference_t<Base>>;
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  // This way if we read past end we'll catch the error.
+  int buffer1[2][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}};
+  int dummy = 42;
+  (void) dummy;
+  int buffer2[2][4] = {{9, 10, 11, 12}, {13, 14, 15, 16}};
+
+  // operator++(int);
+  {
+    std::ranges::join_view jv(buffer1);
+    auto iter = jv.begin();
+    for (int i = 1; i < 9; ++i) {
+      assert(*iter++ == i);
+    }
+  }
+
+  {
+    using IntView = ValueView<int>;
+    IntView children[4] = {IntView(buffer1[0]), IntView(buffer1[1]), IntView(buffer2[0]), IntView(buffer2[1])};
+    std::ranges::join_view jv(ValueView<IntView>{children});
+    auto iter = jv.begin();
+    for (int i = 1; i < 17; ++i) {
+      assert(*iter == i);
+      iter++;
+    }
+
+    ASSERT_SAME_TYPE(decltype(iter++), void);
+  }
+
+  {
+    std::ranges::join_view jv(buffer1);
+    auto iter = std::next(jv.begin(), 7);
+    assert(*iter++ == 8);
+    assert(iter == jv.end());
+  }
+
+  {
+    int small[2][1] = {{1}, {2}};
+    std::ranges::join_view jv(small);
+    auto iter = jv.begin();
+    for (int i = 1; i < 3; ++i) {
+      assert(*iter++ == i);
+    }
+  }
+
+  // Has some empty children.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer1[0], 4), CopyableChild(buffer1[1], 0), CopyableChild(buffer2[0], 1), CopyableChild(buffer2[1], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    auto iter = jv.begin();
+    assert(*iter == 1); iter++;
+    assert(*iter == 2); iter++;
+    assert(*iter == 3); iter++;
+    assert(*iter == 4); iter++;
+    assert(*iter == 9); iter++;
+    assert(iter == jv.end());
+  }
+
+  // Parent is empty.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer1[0]), CopyableChild(buffer1[1]), CopyableChild(buffer2[0]), CopyableChild(buffer2[1])};
+    std::ranges::join_view jv(ParentView(children, 0));
+    assert(jv.begin() == jv.end());
+  }
+
+  // Parent size is one.
+  {
+    CopyableChild children[1] = {CopyableChild(buffer1[0])};
+    std::ranges::join_view jv(ParentView(children, 1));
+    auto iter = jv.begin();
+    assert(*iter == 1); iter++;
+    assert(*iter == 2); iter++;
+    assert(*iter == 3); iter++;
+    assert(*iter == 4); iter++;
+    assert(iter == jv.end());
+  }
+
+  // Parent and child size is one.
+  {
+    CopyableChild children[1] = {CopyableChild(buffer1[0], 1)};
+    std::ranges::join_view jv(ParentView(children, 1));
+    auto iter = jv.begin();
+    assert(*iter == 1); iter++;
+    assert(iter == jv.end());
+  }
+
+  // Parent size is one child is empty
+  {
+    CopyableChild children[1] = {CopyableChild(buffer1[0], 0)};
+    std::ranges::join_view jv(ParentView(children, 1));
+    assert(jv.begin() == jv.end());
+  }
+
+  // Has all empty children.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer1[0], 0), CopyableChild(buffer1[1], 0), CopyableChild(buffer2[0], 0), CopyableChild(buffer2[1], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.begin() == jv.end());
+  }
+
+  // First child is empty, others are not.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer1[0], 4), CopyableChild(buffer1[1], 0), CopyableChild(buffer2[0], 0), CopyableChild(buffer2[1], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    auto iter = jv.begin();
+    assert(*iter == 1); iter++;
+    assert(*iter == 2); iter++;
+    assert(*iter == 3); iter++;
+    assert(*iter == 4); iter++;
+    assert(iter == jv.end());
+  }
+
+  // Last child is empty, others are not.
+  {
+    CopyableChild children[4] = {CopyableChild(buffer1[0], 4), CopyableChild(buffer1[1], 4), CopyableChild(buffer2[0], 4), CopyableChild(buffer2[1], 0)};
+    auto jv = std::ranges::join_view(ParentView(children));
+    auto iter = jv.begin();
+    for (int i = 1; i < 13; ++i) {
+      assert(*iter == i);
+      iter++;
+    }
+  }
+
+  // operator++();
+  {
+    std::ranges::join_view jv(buffer1);
+    auto iter = jv.begin();
+    for (int i = 2; i < 9; ++i) {
+      assert(*++iter == i);
+    }
+  }
+
+  {
+    using IntView = ValueView<int>;
+    IntView children[4] = {IntView(buffer1[0]), IntView(buffer1[1]), IntView(buffer2[0]), IntView(buffer2[1])};
+    std::ranges::join_view jv(ValueView<IntView>{children});
+    auto iter = jv.begin();
+    for (int i = 2; i < 17; ++i) {
+      assert(*++iter == i);
+    }
+
+    ASSERT_SAME_TYPE(decltype(++iter), decltype(iter)&);
+  }
+
+  {
+    // check return value
+    std::ranges::join_view jv(buffer1);
+    auto iter = jv.begin();
+    using iterator = decltype(iter);
+
+    decltype(auto) iter2 = ++iter;
+    static_assert(std::is_same_v<decltype(iter2), iterator&>);
+    assert(&iter2 == &iter);
+
+    std::same_as<iterator> decltype(auto) iter3 = iter++;
+    assert(std::next(iter3) == iter);
+  }
+
+  {
+    // !ref-is-glvalue
+    BidiCommonInner inners[2] = {buffer1[0], buffer1[1]};
+    InnerRValue<BidiCommonOuter<BidiCommonInner>> outer{inners};
+    std::ranges::join_view jv(outer);
+    auto iter = jv.begin();
+    static_assert(std::is_void_v<decltype(iter++)>);
+  }
+
+  {
+    // !forward_range<Base>
+    BufferView<int*> inners[2] = {buffer1[0], buffer1[1]};
+    using Outer = SimpleInputCommonOuter<BufferView<int*>>;
+    std::ranges::join_view jv{Outer(inners)};
+    auto iter = jv.begin();
+    static_assert(std::is_void_v<decltype(iter++)>);
+  }
+
+  {
+    // !forward_range<range_reference_t<Base>>
+    InputCommonInner inners[1] = {buffer1[0]};
+    std::ranges::join_view jv{inners};
+    auto iter = jv.begin();
+    static_assert(std::is_void_v<decltype(iter++)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/iter.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/iter.move.pass.cpp
new file mode 100644
index 0000000..917e72d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/iter.move.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr decltype(auto) iter_move(const iterator& i);
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+
+  {
+    std::ranges::join_view jv(buffer);
+    assert(std::ranges::iter_move(jv.begin()) == 1);
+    static_assert(std::is_same_v<decltype(std::ranges::iter_move(jv.begin())), int&&>);
+
+    static_assert(noexcept(std::ranges::iter_move(std::declval<decltype(jv.begin())>())));
+  }
+
+  {
+    // iter_move calls inner's iter_move and calls
+    // iter_move on the correct inner iterator
+    IterMoveSwapAwareView inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv(inners);
+    auto it = jv.begin();
+
+    const auto& iter_move_called_times1 = jv.base().begin()->iter_move_called;
+    const auto& iter_move_called_times2 = std::next(jv.base().begin())->iter_move_called;
+    assert(iter_move_called_times1 == 0);
+    assert(iter_move_called_times2 == 0);
+
+    std::same_as<std::pair<int&&, int&&>> decltype(auto) x = std::ranges::iter_move(it);
+    assert(std::get<0>(x) == 1);
+    assert(iter_move_called_times1 == 1);
+    assert(iter_move_called_times2 == 0);
+
+    auto it2 = std::ranges::next(it, 4);
+
+    std::same_as<std::pair<int&&, int&&>> decltype(auto) y = std::ranges::iter_move(it2);
+    assert(std::get<0>(y) == 5);
+    assert(iter_move_called_times1 == 1);
+    assert(iter_move_called_times2 == 1);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/iter.swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/iter.swap.pass.cpp
new file mode 100644
index 0000000..28e1bf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/iter.swap.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr void iter_swap(const iterator& x, const iterator& y);
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+using NonSwappableView = BufferView<copying_iterator<int*>>;
+static_assert(std::ranges::input_range<NonSwappableView>);
+static_assert(!std::indirectly_swappable<std::ranges::iterator_t<NonSwappableView>>);
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+
+  {
+    std::ranges::join_view jv(buffer);
+    auto iter1 = jv.begin();
+    auto iter2 = std::next(jv.begin());
+    assert(buffer[0][0] == 1);
+    assert(buffer[0][1] == 2);
+    std::ranges::iter_swap(iter1, iter2);
+    assert(buffer[0][0] == 2);
+    assert(buffer[0][1] == 1);
+
+    static_assert(noexcept(std::ranges::iter_swap(iter1, iter2)));
+  }
+
+  {
+    // iter_move calls inner's iter_swap
+    IterMoveSwapAwareView inners[1] = {buffer[0]};
+    std::ranges::join_view jv(inners);
+    auto it1 = jv.begin();
+    auto it2 = std::ranges::next(it1);
+
+    const auto& iter_swap_called_times = jv.base().begin()->iter_swap_called;
+
+    assert(iter_swap_called_times == 0);
+    assert(buffer[0][0] == 2);
+    assert(buffer[0][1] == 1);
+
+    std::ranges::iter_swap(it1, it2);
+
+    assert(buffer[0][0] == 1);
+    assert(buffer[0][1] == 2);
+    assert(iter_swap_called_times == 1);
+  }
+
+  {
+    // LWG3517 `join_view::iterator`'s `iter_swap` is underconstrained
+    // `iter_swap` should not be defined if Inner's iterator does not indirectly_swappable
+    NonSwappableView inners[2] = {buffer[0], buffer[1]};
+    std::ranges::join_view jv(inners);
+    using Iter = std::ranges::iterator_t<decltype(jv)>;
+    static_assert(!std::indirectly_swappable<Iter>);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/member_types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/member_types.compile.pass.cpp
new file mode 100644
index 0000000..b9b9d73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/member_types.compile.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Iterator traits and member typedefs in join_view::<iterator>.
+
+#include <ranges>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+#include "../types.h"
+
+template<class T>
+struct ForwardView : std::ranges::view_base {
+  forward_iterator<T*> begin() const;
+  sentinel_wrapper<forward_iterator<T*>> end() const;
+};
+
+template<class T>
+struct InputView : std::ranges::view_base {
+  cpp17_input_iterator<T*> begin() const;
+  sentinel_wrapper<cpp17_input_iterator<T*>> end() const;
+};
+
+template <class T, class V>
+struct diff_type_iter {
+  using iterator_category = std::input_iterator_tag;
+  using value_type = V;
+  using difference_type = T;
+
+  V& operator*() const;
+  diff_type_iter& operator++();
+  void operator++(int);
+  friend constexpr bool operator==(diff_type_iter, diff_type_iter) = default;
+};
+
+template <class T, class V = int>
+struct DiffTypeRange : std::ranges::view_base {
+  diff_type_iter<T, V> begin() const;
+  diff_type_iter<T, V> end() const;
+};
+
+template<class T>
+concept HasIterCategory = requires { typename T::iterator_category; };
+
+void test() {
+  {
+    int buffer[4][4];
+    std::ranges::join_view jv(buffer);
+    using Iter = std::ranges::iterator_t<decltype(jv)>;
+
+    static_assert(std::is_same_v<Iter::iterator_concept, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<Iter::iterator_category, std::bidirectional_iterator_tag>);
+    static_assert(std::is_same_v<Iter::difference_type, std::ptrdiff_t>);
+    static_assert(std::is_same_v<Iter::value_type, int>);
+    static_assert(HasIterCategory<Iter>);
+  }
+
+  {
+    using Iter = std::ranges::iterator_t<std::ranges::join_view<ForwardView<ForwardView<int>>>>;
+
+    static_assert(std::is_same_v<Iter::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<Iter::iterator_category, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<Iter::difference_type, std::ptrdiff_t>);
+    static_assert(std::is_same_v<Iter::value_type, int>);
+    static_assert(HasIterCategory<Iter>);
+  }
+
+  {
+    using Iter = std::ranges::iterator_t<std::ranges::join_view<InputView<InputView<int>>>>;
+
+    static_assert(std::is_same_v<Iter::iterator_concept, std::input_iterator_tag>);
+    static_assert(!HasIterCategory<Iter>);
+    static_assert(std::is_same_v<Iter::difference_type, std::ptrdiff_t>);
+    static_assert(std::is_same_v<Iter::value_type, int>);
+  }
+
+  {
+    // LWG3535 `join_view::iterator::iterator_category` and `::iterator_concept` lie
+    // Bidi non common inner range should not have bidirectional_iterator_tag
+    using Base = BidiCommonOuter<BidiNonCommonInner>;
+    using Iter = std::ranges::iterator_t<std::ranges::join_view<Base>>;
+    static_assert(std::is_same_v<Iter::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<Iter::iterator_category, std::forward_iterator_tag>);
+    static_assert(HasIterCategory<Iter>);
+    static_assert(std::is_same_v<Iter::difference_type, std::ptrdiff_t>);
+    static_assert(std::is_same_v<Iter::value_type, int>);
+  }
+
+  {
+    // !ref-is-glvalue
+    using Outer = InnerRValue<BidiCommonOuter<BidiCommonInner>>;
+    using Iter = std::ranges::iterator_t<std::ranges::join_view<Outer>>;
+    static_assert(!HasIterCategory<Iter>);
+    static_assert(std::is_same_v<Iter::iterator_concept, std::input_iterator_tag>);
+  }
+
+  {
+    // value_type == inner's value_type
+    using Inner = IterMoveSwapAwareView;
+    using InnerValue = std::ranges::range_value_t<Inner>;
+    using InnerReference = std::ranges::range_reference_t<Inner>;
+    static_assert(!std::is_same_v<InnerValue, std::remove_cvref<InnerReference>>);
+
+    using Outer = BidiCommonOuter<Inner>;
+    using Iter = std::ranges::iterator_t<std::ranges::join_view<Outer>>;
+    static_assert(std::is_same_v<InnerValue, std::pair<int, int>>);
+    static_assert(std::is_same_v<Iter::value_type, std::pair<int, int>>);
+  }
+
+  {
+    // difference_type
+    using Inner = DiffTypeRange<std::intptr_t>;
+    using Outer = DiffTypeRange<std::ptrdiff_t, Inner>;
+    using Iter = std::ranges::iterator_t<std::ranges::join_view<Outer>>;
+    static_assert(std::is_same_v<Iter::difference_type, std::common_type_t<std::intptr_t, std::ptrdiff_t>>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/star.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/star.pass.cpp
new file mode 100644
index 0000000..73457b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/iterator/star.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr decltype(auto) operator*() const;
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+
+  {
+    std::ranges::join_view jv(buffer);
+    auto iter = jv.begin();
+    for (int i = 1; i < 17; ++i) {
+      assert(*iter++ == i);
+    }
+  }
+  {
+    std::ranges::join_view jv(buffer);
+    auto iter = std::next(jv.begin(), 15);
+    assert(*iter++ == 16);
+    assert(iter == jv.end());
+  }
+  {
+    ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
+    auto jv = std::ranges::join_view(ParentView(children));
+    auto iter = jv.begin();
+    for (int i = 1; i < 17; ++i) {
+      assert(*iter == i);
+      ++iter;
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..42fcc73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.default.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  std::ranges::sentinel_t<std::ranges::join_view<CopyableParent>> sent;
+  (void) sent;
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.other.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.other.pass.cpp
new file mode 100644
index 0000000..4bd8025
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.other.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr sentinel(sentinel<!Const> s);
+//             requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+template <class T>
+struct convertible_sentinel_wrapper {
+  explicit convertible_sentinel_wrapper() = default;
+  constexpr convertible_sentinel_wrapper(const T& it) : it_(it) {}
+
+  template <class U>
+    requires std::convertible_to<const U&, T>
+  constexpr convertible_sentinel_wrapper(const convertible_sentinel_wrapper<U>& other) : it_(other.it_) {}
+
+  constexpr friend bool operator==(convertible_sentinel_wrapper const& self, const T& other) {
+    return self.it_ == other;
+  }
+  T it_;
+};
+
+struct ConstConveritbleView : BufferView<BufferView<int*>*> {
+  using BufferView<BufferView<int*>*>::BufferView;
+
+  using sentinel = convertible_sentinel_wrapper<BufferView<int*>*>;
+  using const_sentinel = convertible_sentinel_wrapper<const BufferView<int*>*>;
+
+  constexpr BufferView<int*>* begin() { return data_; }
+  constexpr const BufferView<int*>* begin() const { return data_; }
+  constexpr sentinel end() { return sentinel(data_ + size_); }
+  constexpr const_sentinel end() const { return const_sentinel(data_ + size_); }
+};
+static_assert(!std::ranges::common_range<ConstConveritbleView>);
+static_assert(std::convertible_to<std::ranges::sentinel_t<ConstConveritbleView>,
+                                  std::ranges::sentinel_t<ConstConveritbleView const>>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<ConstConveritbleView>);
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+  {
+    BufferView<int*> inners[] = {buffer[0], buffer[1], buffer[2]};
+    ConstConveritbleView outer(inners);
+    std::ranges::join_view jv(outer);
+    auto sent1 = jv.end();
+    std::ranges::sentinel_t<const decltype(jv)> sent2 = sent1;
+    assert(std::as_const(jv).begin() != sent2);
+    assert(std::ranges::next(std::as_const(jv).begin(), 12) == sent2);
+
+    // We cannot create a non-const sentinel from a const sentinel.
+    static_assert(!std::constructible_from<decltype(sent1), decltype(sent2)>);
+  }
+
+  {
+    // cannot create a const sentinel from a non-const sentinel if the underlying
+    // const sentinel cannot be created from the underlying non-const sentinel
+    using Inner = BufferView<int*>;
+    using ConstInconvertibleOuter =
+        BufferView<forward_iterator<const Inner*>, sentinel_wrapper<forward_iterator<const Inner*>>,
+                   bidirectional_iterator<Inner*>, sentinel_wrapper<bidirectional_iterator<Inner*>>>;
+    using JoinView = std::ranges::join_view<ConstInconvertibleOuter>;
+    using sentinel = std::ranges::sentinel_t<JoinView>;
+    using const_sentinel = std::ranges::sentinel_t<const JoinView>;
+    static_assert(!std::constructible_from<sentinel, const_sentinel>);
+    static_assert(!std::constructible_from<const_sentinel, sentinel>);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.parent.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.parent.pass.cpp
new file mode 100644
index 0000000..1ac6827
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/ctor.parent.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit sentinel(Parent& parent);
+
+#include <cassert>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[4][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
+
+  CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]), CopyableChild(buffer[3])};
+  CopyableParent parent{children};
+  std::ranges::join_view jv(parent);
+  std::ranges::sentinel_t<decltype(jv)> sent(jv);
+  assert(sent == std::ranges::next(jv.begin(), 16));
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  {
+    // Test explicitness.
+    using Parent = std::ranges::join_view<ParentView<ChildView>>;
+    static_assert( std::is_constructible_v<std::ranges::sentinel_t<Parent>, Parent&>);
+    static_assert(!std::is_convertible_v<std::ranges::sentinel_t<Parent>, Parent&>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/eq.pass.cpp
new file mode 100644
index 0000000..7852d1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/sentinel/eq.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<bool OtherConst>
+//   requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>>
+// friend constexpr bool operator==(const iterator<OtherConst>& x, const sentinel& y);
+
+#include <cassert>
+#include <concepts>
+#include <functional>
+#include <ranges>
+
+#include "../types.h"
+
+template <class Iter, class Sent>
+concept EqualityComparable = std::invocable<std::equal_to<>, const Iter&, const Sent&> ;
+
+using Iterator = random_access_iterator<BufferView<int*>*>;
+using ConstIterator = random_access_iterator<const BufferView<int*>*>;
+
+template <bool Const>
+struct ConstComparableSentinel {
+
+  using Iter = std::conditional_t<Const, ConstIterator, Iterator>;
+  Iter iter_;
+
+  explicit ConstComparableSentinel() = default;
+  constexpr explicit ConstComparableSentinel(const Iter& it) : iter_(it) {}
+
+  constexpr friend bool operator==(const Iterator& i, const ConstComparableSentinel& s) {
+    return base(i) == base(s.iter_);
+  }
+
+  constexpr friend bool operator==(const ConstIterator& i, const ConstComparableSentinel& s) {
+    return base(i) == base(s.iter_);
+  }
+};
+
+struct ConstComparableView : BufferView<BufferView<int*>*> {
+  using BufferView<BufferView<int*>*>::BufferView;
+
+  constexpr auto begin() { return Iterator(data_); }
+  constexpr auto begin() const { return ConstIterator(data_); }
+  constexpr auto end() { return ConstComparableSentinel<false>(Iterator(data_ + size_)); }
+  constexpr auto end() const { return ConstComparableSentinel<true>(ConstIterator(data_ + size_)); }
+};
+
+static_assert(EqualityComparable<std::ranges::iterator_t<ConstComparableView>,
+                                 std::ranges::sentinel_t<const ConstComparableView>>);
+static_assert(EqualityComparable<std::ranges::iterator_t<const ConstComparableView>,
+                                 std::ranges::sentinel_t<ConstComparableView>>);
+
+constexpr bool test() {
+  int buffer[4][4] = {{1111, 2222, 3333, 4444}, {555, 666, 777, 888}, {99, 1010, 1111, 1212}, {13, 14, 15, 16}};
+
+  {
+    ChildView children[4] = {ChildView(buffer[0]), ChildView(buffer[1]), ChildView(buffer[2]), ChildView(buffer[3])};
+    auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+    static_assert(!EqualityComparable<decltype(std::as_const(jv).begin()), decltype(jv.end())>);
+    static_assert(!EqualityComparable<decltype(jv.begin()), decltype(std::as_const(jv).end())>);
+  }
+
+  {
+    CopyableChild children[4] = {CopyableChild(buffer[0]), CopyableChild(buffer[1]), CopyableChild(buffer[2]),
+                                 CopyableChild(buffer[3])};
+    const auto jv = std::ranges::join_view(ParentView(children));
+    assert(jv.end() == std::ranges::next(jv.begin(), 16));
+  }
+
+  // test iterator<Const> == sentinel<!Const>
+  {
+    BufferView<int*> inners[] = {buffer[0], buffer[1]};
+    ConstComparableView outer(inners);
+    auto jv = std::ranges::join_view(outer);
+    assert(jv.end() == std::ranges::next(jv.begin(), 8));
+    assert(std::as_const(jv).end() == std::ranges::next(jv.begin(), 8));
+    assert(jv.end() == std::ranges::next(std::as_const(jv).begin(), 8));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/types.h
new file mode 100644
index 0000000..b2ef5f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.join.view/types.h
@@ -0,0 +1,395 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_JOIN_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_JOIN_TYPES_H
+
+#include <concepts>
+#include <cstdint>
+#include <tuple>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+inline int globalBuffer[4][4] = {
+    {1111, 2222, 3333, 4444},
+    {555, 666, 777, 888},
+    {99, 1010, 1111, 1212},
+    {13, 14, 15, 16},
+};
+
+template <template<class...> class Iter>
+struct ChildViewBase : std::ranges::view_base {
+  int* ptr_;
+
+  using iterator = Iter<int*>;
+  using const_iterator = Iter<const int*>;
+  using sentinel = sentinel_wrapper<iterator>;
+  using const_sentinel = sentinel_wrapper<const_iterator>;
+
+  constexpr ChildViewBase(int* ptr = globalBuffer[0]) : ptr_(ptr) {}
+  ChildViewBase(const ChildViewBase&) = delete;
+  ChildViewBase(ChildViewBase&&) = default;
+  ChildViewBase& operator=(const ChildViewBase&) = delete;
+  ChildViewBase& operator=(ChildViewBase&&) = default;
+
+  constexpr iterator begin() { return iterator(ptr_); }
+  constexpr const_iterator begin() const { return const_iterator(ptr_); }
+  constexpr sentinel end() { return sentinel(iterator(ptr_ + 4)); }
+  constexpr const_sentinel end() const { return const_sentinel(const_iterator(ptr_ + 4)); }
+};
+using ChildView = ChildViewBase<cpp20_input_iterator>;
+
+inline ChildView globalChildren[4] = {
+    ChildView(globalBuffer[0]),
+    ChildView(globalBuffer[1]),
+    ChildView(globalBuffer[2]),
+    ChildView(globalBuffer[3]),
+};
+
+template <class T>
+struct ParentView : std::ranges::view_base {
+  T* ptr_;
+  unsigned size_;
+
+  using iterator = cpp20_input_iterator<T*>;
+  using const_iterator = cpp20_input_iterator<const T*>;
+  using sentinel = sentinel_wrapper<iterator>;
+  using const_sentinel = sentinel_wrapper<const_iterator>;
+
+  constexpr ParentView(T* ptr, unsigned size = 4) : ptr_(ptr), size_(size) {}
+  constexpr ParentView(ChildView* ptr = globalChildren, unsigned size = 4)
+    requires std::same_as<ChildView, T>
+  : ptr_(ptr), size_(size) {}
+  ParentView(const ParentView&) = delete;
+  ParentView(ParentView&&) = default;
+  ParentView& operator=(const ParentView&) = delete;
+  ParentView& operator=(ParentView&&) = default;
+
+  constexpr iterator begin() { return iterator(ptr_); }
+  constexpr const_iterator begin() const { return const_iterator(ptr_); }
+  constexpr sentinel end() { return sentinel(iterator(ptr_ + size_)); }
+  constexpr const_sentinel end() const { return const_sentinel(const_iterator(ptr_ + size_)); }
+};
+
+template <class T>
+ParentView(T*) -> ParentView<T>;
+
+struct CopyableChild : std::ranges::view_base {
+  int* ptr_;
+  unsigned size_;
+
+  using iterator = cpp17_input_iterator<int*>;
+  using const_iterator = cpp17_input_iterator<const int*>;
+  using sentinel = sentinel_wrapper<iterator>;
+  using const_sentinel = sentinel_wrapper<const_iterator>;
+
+  constexpr CopyableChild(int* ptr = globalBuffer[0], unsigned size = 4) : ptr_(ptr), size_(size) {}
+
+  constexpr iterator begin() { return iterator(ptr_); }
+  constexpr const_iterator begin() const { return const_iterator(ptr_); }
+  constexpr sentinel end() { return sentinel(iterator(ptr_ + size_)); }
+  constexpr const_sentinel end() const { return const_sentinel(const_iterator(ptr_ + size_)); }
+};
+
+struct CopyableParent : std::ranges::view_base {
+  CopyableChild* ptr_;
+
+  using iterator = cpp17_input_iterator<CopyableChild*>;
+  using const_iterator = cpp17_input_iterator<const CopyableChild*>;
+  using sentinel = sentinel_wrapper<iterator>;
+  using const_sentinel = sentinel_wrapper<const_iterator>;
+
+  constexpr CopyableParent(CopyableChild* ptr) : ptr_(ptr) {}
+
+  constexpr iterator begin() { return iterator(ptr_); }
+  constexpr const_iterator begin() const { return const_iterator(ptr_); }
+  constexpr sentinel end() { return sentinel(iterator(ptr_ + 4)); }
+  constexpr const_sentinel end() const { return const_sentinel(const_iterator(ptr_ + 4)); }
+};
+
+struct Box {
+  int x;
+};
+
+template <class T>
+struct InputValueIter {
+  typedef std::input_iterator_tag iterator_category;
+  typedef T value_type;
+  typedef int difference_type;
+  typedef T reference;
+
+  T* ptr_ = nullptr;
+  constexpr InputValueIter() = default;
+  constexpr InputValueIter(T* ptr) : ptr_(ptr) {}
+
+  constexpr T operator*() const { return std::move(*ptr_); }
+  constexpr void operator++(int) { ++ptr_; }
+  constexpr InputValueIter& operator++() {
+    ++ptr_;
+    return *this;
+  }
+
+  constexpr T* operator->() { return ptr_; }
+
+  constexpr friend bool operator==(const InputValueIter&, const InputValueIter&) = default;
+};
+
+template <class T>
+struct ValueView : std::ranges::view_base {
+  InputValueIter<T> ptr_;
+
+  using sentinel = sentinel_wrapper<InputValueIter<T>>;
+
+  constexpr ValueView(T* ptr) : ptr_(ptr) {}
+
+  constexpr ValueView(ValueView&& other) : ptr_(other.ptr_) { other.ptr_.ptr_ = nullptr; }
+
+  constexpr ValueView& operator=(ValueView&& other) {
+    ptr_ = other.ptr_;
+    other.ptr_ = InputValueIter<T>(nullptr);
+    return *this;
+  }
+
+  ValueView(const ValueView&) = delete;
+  ValueView& operator=(const ValueView&) = delete;
+
+  constexpr InputValueIter<T> begin() const { return ptr_; }
+  constexpr sentinel end() const { return sentinel(InputValueIter<T>(ptr_.ptr_ + 4)); }
+};
+
+template <class Iter, class Sent = Iter, class NonConstIter = Iter, class NonConstSent = Sent>
+struct BufferView : std::ranges::view_base {
+
+  using T = std::iter_value_t<Iter>;
+  T* data_;
+  std::size_t size_;
+
+  template <std::size_t N>
+  constexpr BufferView(T (&b)[N]) : data_(b), size_(N) {}
+  constexpr BufferView(T* p, std::size_t s) : data_(p), size_(s) {}
+
+  constexpr NonConstIter begin()
+    requires(!std::is_same_v<Iter, NonConstIter>) {
+    return NonConstIter(this->data_);
+  }
+  constexpr Iter begin() const { return Iter(this->data_); }
+
+  constexpr NonConstSent end()
+    requires(!std::is_same_v<Sent, NonConstSent>) {
+    if constexpr (std::is_same_v<NonConstIter, NonConstSent>) {
+      return NonConstIter(this->data_ + this->size_);
+    } else {
+      return NonConstSent(NonConstIter(this->data_ + this->size_));
+    }
+  }
+
+  constexpr Sent end() const {
+    if constexpr (std::is_same_v<Iter, Sent>) {
+      return Iter(this->data_ + this->size_);
+    } else {
+      return Sent(Iter(this->data_ + this->size_));
+    }
+  }
+};
+
+using InputCommonInner = BufferView<common_input_iterator<int*>>;
+static_assert(std::ranges::input_range<InputCommonInner>);
+static_assert(!std::ranges::forward_range<InputCommonInner>);
+static_assert(std::ranges::common_range<InputCommonInner>);
+
+using InputNonCommonInner = BufferView<common_input_iterator<int*>, sentinel_wrapper<common_input_iterator<int*>>>;
+static_assert(std::ranges::input_range<InputNonCommonInner>);
+static_assert(!std::ranges::forward_range<InputNonCommonInner>);
+static_assert(!std::ranges::common_range<InputNonCommonInner>);
+
+using ForwardCommonInner = BufferView<forward_iterator<int*>>;
+static_assert(std::ranges::forward_range<ForwardCommonInner>);
+static_assert(!std::ranges::bidirectional_range<ForwardCommonInner>);
+static_assert(std::ranges::common_range<ForwardCommonInner>);
+
+using ForwardNonCommonInner = BufferView<forward_iterator<int*>, sentinel_wrapper<forward_iterator<int*>>>;
+static_assert(std::ranges::forward_range<ForwardNonCommonInner>);
+static_assert(!std::ranges::bidirectional_range<ForwardNonCommonInner>);
+static_assert(!std::ranges::common_range<ForwardNonCommonInner>);
+
+using BidiCommonInner = BufferView<bidirectional_iterator<int*>>;
+static_assert(std::ranges::bidirectional_range<BidiCommonInner>);
+static_assert(std::ranges::common_range<BidiCommonInner>);
+
+using BidiNonCommonInner = BufferView<bidirectional_iterator<int*>, sentinel_wrapper<bidirectional_iterator<int*>>>;
+static_assert(std::ranges::bidirectional_range<BidiNonCommonInner>);
+static_assert(!std::ranges::common_range<BidiNonCommonInner>);
+
+template <class Inner = BufferView<int*>>
+using SimpleInputCommonOuter = BufferView<common_input_iterator<Inner*>>;
+static_assert(!std::ranges::forward_range<SimpleInputCommonOuter<>>);
+static_assert(!std::ranges::bidirectional_range<SimpleInputCommonOuter<>>);
+static_assert(std::ranges::common_range<SimpleInputCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleInputCommonOuter<>>);
+
+template <class Inner = BufferView<int*>>
+using NonSimpleInputCommonOuter = BufferView<common_input_iterator<const Inner*>, common_input_iterator<const Inner*>,
+                                             common_input_iterator< Inner*>, common_input_iterator< Inner*>>;
+static_assert(!std::ranges::forward_range<NonSimpleInputCommonOuter<>>);
+static_assert(!std::ranges::bidirectional_range<NonSimpleInputCommonOuter<>>);
+static_assert(std::ranges::common_range<NonSimpleInputCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimpleInputCommonOuter<>>);
+
+template <class Inner = BufferView<int*>>
+using SimpleForwardCommonOuter = BufferView<forward_iterator<Inner*>>;
+static_assert(std::ranges::forward_range<SimpleForwardCommonOuter<>>);
+static_assert(!std::ranges::bidirectional_range<SimpleForwardCommonOuter<>>);
+static_assert(std::ranges::common_range<SimpleForwardCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleForwardCommonOuter<>>);
+
+template <class Inner = BufferView<int*>>
+using NonSimpleForwardCommonOuter = BufferView<forward_iterator<const Inner*>, forward_iterator<const Inner*>,
+                                               forward_iterator<Inner*>, forward_iterator<Inner*>>;
+static_assert(std::ranges::forward_range<NonSimpleForwardCommonOuter<>>);
+static_assert(!std::ranges::bidirectional_range<NonSimpleForwardCommonOuter<>>);
+static_assert(std::ranges::common_range<NonSimpleForwardCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimpleForwardCommonOuter<>>);
+
+template <class Inner = BufferView<int*>>
+using SimpleForwardNonCommonOuter = BufferView<forward_iterator<Inner*>, sentinel_wrapper<forward_iterator<Inner*>>>;
+static_assert(std::ranges::forward_range<SimpleForwardNonCommonOuter<>>);
+static_assert(!std::ranges::bidirectional_range<SimpleForwardNonCommonOuter<>>);
+static_assert(!std::ranges::common_range<SimpleForwardNonCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleForwardNonCommonOuter<>>);
+
+template <class Inner = BufferView<int*>>
+using NonSimpleForwardNonCommonOuter =
+    BufferView<forward_iterator<const Inner*>, sentinel_wrapper<forward_iterator<const Inner*>>,
+               forward_iterator<Inner*>, sentinel_wrapper<forward_iterator<Inner*>>>;
+static_assert(std::ranges::forward_range<NonSimpleForwardNonCommonOuter<>>);
+static_assert(!std::ranges::bidirectional_range<NonSimpleForwardNonCommonOuter<>>);
+static_assert(!std::ranges::common_range<NonSimpleForwardNonCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimpleForwardNonCommonOuter<>>);
+
+template <class Inner = BufferView<int*>>
+using BidiCommonOuter = BufferView<bidirectional_iterator<Inner*>>;
+static_assert(std::ranges::bidirectional_range<BidiCommonOuter<>>);
+static_assert(std::ranges::common_range<BidiCommonOuter<>>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<BidiCommonOuter<>>);
+
+// an iterator where its operator* makes a copy of underlying operator*
+template <class It>
+struct copying_iterator {
+  It it_ = It();
+
+  using value_type = typename std::iterator_traits<It>::value_type;
+  using difference_type = typename std::iterator_traits<It>::difference_type;
+  using pointer = typename std::iterator_traits<It>::pointer;
+
+  copying_iterator() requires std::default_initializable<It> = default;
+  constexpr copying_iterator(It it) : it_(std::move(it)) {}
+
+  // makes a copy of underlying operator* to create a PRValue
+  constexpr value_type operator*() const { return *it_; }
+
+  constexpr copying_iterator& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr copying_iterator& operator--()
+    requires std::bidirectional_iterator<It> {
+    --it_;
+    return *this;
+  }
+  constexpr copying_iterator operator++(int)
+    requires std::forward_iterator<It> {
+    return copying_iterator(it_++);
+  }
+  constexpr void operator++(int) { return it_++; }
+  constexpr copying_iterator operator--(int)
+    requires std::bidirectional_iterator<It> {
+    return copying_iterator(it_--);
+  }
+
+  friend constexpr bool operator==(const copying_iterator& x, const copying_iterator& y) = default;
+};
+
+template <class Outer>
+struct InnerRValue : Outer {
+
+  using iterator = copying_iterator<std::ranges::iterator_t<Outer>>;
+  using const_iterator = copying_iterator<std::ranges::iterator_t<const Outer>>;
+  using sentinel = copying_iterator<std::ranges::sentinel_t<Outer>>;
+  using const_sentinel = copying_iterator<std::ranges::sentinel_t<const Outer>>;
+
+  using Outer::Outer;
+  static_assert(std::ranges::common_range<Outer>, "non-common range is not supported yet");
+
+  constexpr iterator begin() { return Outer::begin(); }
+  constexpr const_iterator begin() const
+    requires std::ranges::range<const Outer> {
+    return Outer::begin();
+  }
+
+  constexpr auto end() { return iterator{Outer::end()}; }
+  constexpr auto end() const
+    requires std::ranges::range<const Outer> {
+    return const_iterator{Outer::end()};
+  }
+};
+static_assert(std::ranges::forward_range<InnerRValue<SimpleForwardCommonOuter<>>>);
+static_assert(!std::ranges::bidirectional_range<InnerRValue<SimpleForwardCommonOuter<>>>);
+static_assert(std::ranges::common_range<InnerRValue<SimpleForwardCommonOuter<>>>);
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<InnerRValue<SimpleForwardCommonOuter<>>>);
+static_assert(!std::is_lvalue_reference_v<std::ranges::range_reference_t<InnerRValue<SimpleForwardCommonOuter<>>>>);
+
+struct move_swap_aware_iter {
+
+  // This is a proxy-like iterator where `reference` is a prvalue, and
+  // `reference` and `value_type` are distinct types (similar to `zip_view::iterator`).
+  using value_type = std::pair<int, int>;
+  using reference = std::pair<int&, int&>;
+  using rvalue_reference = std::pair<int&&, int&&>;
+
+  using difference_type = std::intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  int* iter_move_called = nullptr;
+  int* iter_swap_called = nullptr;
+  int* i_ = nullptr;
+
+  constexpr move_swap_aware_iter& operator++() {
+    ++i_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++i_; }
+
+  constexpr reference operator*() const { return reference(*i_, *i_); }
+  constexpr friend bool operator==(const move_swap_aware_iter& x, const move_swap_aware_iter& y) {
+    return x.i_ == y.i_;
+  }
+
+  constexpr friend rvalue_reference iter_move(const move_swap_aware_iter& x) noexcept {
+    ++(*x.iter_move_called);
+    return rvalue_reference{std::move(*x.i_), std::move(*x.i_)};
+  }
+
+  constexpr friend void iter_swap(const move_swap_aware_iter& x, const move_swap_aware_iter& y) noexcept {
+    ++(*x.iter_swap_called);
+    std::swap(*x.i_, *y.i_);
+  }
+};
+
+struct IterMoveSwapAwareView : BufferView<int*> {
+  int iter_move_called = 0;
+  int iter_swap_called = 0;
+  using BufferView<int*>::BufferView;
+
+  constexpr auto begin() { return move_swap_aware_iter{&iter_move_called, &iter_swap_called, data_}; }
+
+  constexpr auto end() { return move_swap_aware_iter{&iter_move_called, &iter_swap_called, data_ + size_}; }
+};
+static_assert(std::ranges::input_range<IterMoveSwapAwareView>);
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_JOIN_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/adaptor.pass.cpp
new file mode 100644
index 0000000..da4bd9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/adaptor.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::lazy_split
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <string_view>
+#include <utility>
+
+#include "test_iterators.h"
+#include "types.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct SomeView : std::ranges::view_base {
+  const std::string_view* v_;
+  constexpr SomeView(const std::string_view& v) : v_(&v) {}
+  constexpr auto begin() const { return v_->begin(); }
+  constexpr auto end() const { return v_->end(); }
+};
+
+struct NotAView { };
+
+static_assert(!std::is_invocable_v<decltype(std::views::lazy_split)>);
+static_assert(!std::is_invocable_v<decltype(std::views::lazy_split), SomeView, NotAView>);
+static_assert(!std::is_invocable_v<decltype(std::views::lazy_split), NotAView, SomeView>);
+static_assert( std::is_invocable_v<decltype(std::views::lazy_split), SomeView, SomeView>);
+
+static_assert( CanBePiped<SomeView&,    decltype(std::views::lazy_split)>);
+static_assert( CanBePiped<char(&)[10],  decltype(std::views::lazy_split)>);
+static_assert(!CanBePiped<char(&&)[10], decltype(std::views::lazy_split)>);
+static_assert(!CanBePiped<NotAView,     decltype(std::views::lazy_split)>);
+
+static_assert(std::same_as<decltype(std::views::lazy_split), decltype(std::ranges::views::lazy_split)>);
+
+constexpr bool test() {
+  std::string_view input = "abc";
+  std::string_view sep = "a";
+
+  // Test that `std::views::lazy_split` is a range adaptor.
+
+  // Test `views::lazy_split(input, sep)`.
+  {
+    SomeView view(input);
+
+    using Result = std::ranges::lazy_split_view<SomeView, std::string_view>;
+    std::same_as<Result> decltype(auto) result = std::views::lazy_split(view, sep);
+    assert(result.base().begin() == input.begin());
+    assert(result.base().end() == input.end());
+  }
+
+  // Test `views::lazy_split(sep)(input)`.
+  {
+    SomeView view(input);
+
+    using Result = std::ranges::lazy_split_view<SomeView, std::string_view>;
+    std::same_as<Result> decltype(auto) result = std::views::lazy_split(sep)(view);
+    assert(result.base().begin() == input.begin());
+    assert(result.base().end() == input.end());
+  }
+
+  // Test `view | views::lazy_split`.
+  {
+    SomeView view(input);
+
+    using Result = std::ranges::lazy_split_view<SomeView, std::string_view>;
+    std::same_as<Result> decltype(auto) result = view | std::views::lazy_split(sep);
+    assert(result.base().begin() == input.begin());
+    assert(result.base().end() == input.end());
+  }
+
+  // Test `adaptor | views::lazy_split`.
+  {
+    SomeView view(input);
+    auto f = [](char c) { return c; };
+    auto partial = std::views::transform(f) | std::views::lazy_split(sep);
+
+    using Result = std::ranges::lazy_split_view<std::ranges::transform_view<SomeView, decltype(f)>, std::string_view>;
+    std::same_as<Result> decltype(auto) result = partial(view);
+    assert(result.base().base().begin() == input.begin());
+    assert(result.base().base().end() == input.end());
+  }
+
+  // Test `views::lazy_split | adaptor`.
+  {
+    SomeView view(input);
+    auto f = [](auto v) { return v; };
+    auto partial = std::views::lazy_split(sep) | std::views::transform(f);
+
+    using Result = std::ranges::transform_view<std::ranges::lazy_split_view<SomeView, std::string_view>, decltype(f)>;
+    std::same_as<Result> decltype(auto) result = partial(view);
+    assert(result.base().base().begin() == input.begin());
+    assert(result.base().base().end() == input.end());
+  }
+
+  // Test that one can call `std::views::lazy_split` with arbitrary stuff, as long as we
+  // don't try to actually complete the call by passing it a range.
+  //
+  // That makes no sense and we can't do anything with the result, but it's valid.
+  {
+    struct X { };
+    [[maybe_unused]] auto partial = std::views::lazy_split(X{});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/base.pass.cpp
new file mode 100644
index 0000000..b9f2ac2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/base.pass.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr View base() const& requires copy_constructible<_View>;
+// constexpr View base() &&;
+
+#include <ranges>
+
+#include <cassert>
+#include <string_view>
+#include <utility>
+#include "types.h"
+
+struct MoveOnlyView : std::ranges::view_base {
+  std::string_view view_;
+  constexpr MoveOnlyView() = default;
+  constexpr MoveOnlyView(const char* ptr) : view_(ptr) {}
+  constexpr MoveOnlyView(std::string_view v) : view_(v) {}
+  constexpr MoveOnlyView(MoveOnlyView&&) = default;
+  constexpr MoveOnlyView& operator=(MoveOnlyView&&) = default;
+  constexpr const char* begin() const { return view_.begin(); }
+  constexpr const char* end() const { return view_.end(); }
+  constexpr bool operator==(MoveOnlyView rhs) const { return view_ == rhs.view_; }
+};
+static_assert( std::ranges::view<MoveOnlyView>);
+static_assert( std::ranges::contiguous_range<MoveOnlyView>);
+static_assert(!std::copyable<MoveOnlyView>);
+
+struct ViewWithInitTracking : std::ranges::view_base {
+  enum class InitializedBy {
+    Copy,
+    Move,
+    Invalid
+  };
+
+  std::string_view v_;
+  InitializedBy initialized_by = InitializedBy::Invalid;
+  constexpr ViewWithInitTracking(std::string_view v) : v_(v) {}
+
+  constexpr auto begin() const { return v_.begin(); }
+  constexpr auto end() const { return v_.end(); }
+
+  constexpr ViewWithInitTracking(const ViewWithInitTracking& rhs) : v_(rhs.v_) { initialized_by = InitializedBy::Copy; }
+  constexpr ViewWithInitTracking(ViewWithInitTracking&& rhs) : v_(rhs.v_) { initialized_by = InitializedBy::Move; }
+  constexpr ViewWithInitTracking& operator=(const ViewWithInitTracking& rhs) = default;
+  constexpr ViewWithInitTracking& operator=(ViewWithInitTracking&& rhs) = default;
+  constexpr bool operator==(const ViewWithInitTracking& rhs) const { return v_ == rhs.v_; }
+};
+
+template <class View>
+concept CanCallBase = requires(View v) { std::forward<View>(v).base(); };
+
+static_assert( CanCallBase<std::ranges::lazy_split_view<MoveOnlyView, ForwardView>&&>);
+static_assert(!CanCallBase<std::ranges::lazy_split_view<MoveOnlyView, ForwardView>&>);
+static_assert(!CanCallBase<std::ranges::lazy_split_view<MoveOnlyView, ForwardView> const &>);
+static_assert(!CanCallBase<std::ranges::lazy_split_view<MoveOnlyView, ForwardView> const &&>);
+
+constexpr bool test() {
+  using View = ViewWithInitTracking;
+
+  // Copyable input -- both lvalue and rvalue overloads of `base` are available.
+  {
+    // Non-const lvalue.
+    {
+      View str{"abc def"};
+      std::ranges::lazy_split_view<View, std::string_view> v(str, " ");
+
+      std::same_as<View> decltype(auto) result = v.base();
+      assert(result == str);
+      assert(result.initialized_by == View::InitializedBy::Copy);
+    }
+
+    // Const lvalue.
+    {
+      View str{"abc def"};
+      const std::ranges::lazy_split_view<View, std::string_view> v(str, " ");
+
+      std::same_as<View> decltype(auto) result = v.base();
+      assert(result == str);
+      assert(result.initialized_by == View::InitializedBy::Copy);
+    }
+
+    // Non-const rvalue.
+    {
+      View str{"abc def"};
+      std::ranges::lazy_split_view<View, std::string_view> v(str, " ");
+
+      std::same_as<View> decltype(auto) result = std::move(v).base();
+      assert(result == str);
+      assert(result.initialized_by == View::InitializedBy::Move);
+    }
+
+    // Const rvalue.
+    {
+      View str{"abc def"};
+      const std::ranges::lazy_split_view<View, std::string_view> v(str, " ");
+
+      std::same_as<View> decltype(auto) result = std::move(v).base();
+      assert(result == str);
+      assert(result.initialized_by == View::InitializedBy::Copy);
+    }
+  }
+
+  // Move-only input -- only the rvalue overload of `base` is available.
+  {
+    std::ranges::lazy_split_view<MoveOnlyView, ForwardView> v;
+    assert(std::move(v).base() == MoveOnlyView());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/begin.pass.cpp
new file mode 100644
index 0000000..c89da85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/begin.pass.cpp
@@ -0,0 +1,148 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin();
+// constexpr auto begin() const requires forward_range<View> && forward_range<const View>;
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_iterators.h"
+#include "types.h"
+
+template <class View>
+concept ConstBeginDisabled = !requires (const View v) {
+  { (*v.begin()) };
+};
+
+constexpr bool test() {
+  // non-const: forward_range<View> && simple-view<View> -> outer-iterator<Const = true>
+  // const: forward_range<View> && forward_range<const View> -> outer-iterator<Const = true>
+  {
+    using V = ForwardView;
+    using P = V;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(std::ranges::forward_range<const V>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<V>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<P>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+  }
+
+  // non-const: forward_range<View> && !simple-view<View> -> outer-iterator<Const = false>
+  // const: forward_range<View> && forward_range<const View> -> outer-iterator<Const = true>
+  {
+    using V = ForwardDiffView;
+    using P = V;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(std::ranges::forward_range<const V>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<V>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<P>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), char&>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+  }
+
+  // non-const: forward_range<View> && !simple-view<View> -> outer-iterator<Const = false>
+  // const: forward_range<View> && !forward_range<const View> -> disabled
+  {
+    using V = ForwardOnlyIfNonConstView;
+    using P = V;
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(!std::ranges::forward_range<const V>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<V>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<P>);
+
+    std::ranges::lazy_split_view<V, P> v;
+    auto it = v.begin();
+    static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+
+    static_assert(ConstBeginDisabled<decltype(v)>);
+  }
+
+  // non-const: forward_range<View> && simple-view<View> && !simple-view<Pattern> -> outer-iterator<Const = false>
+  // const: forward_range<View> && forward_range<const View> -> outer-iterator<Const = true>
+  {
+    using V = ForwardView;
+    using P = ForwardOnlyIfNonConstView;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(std::ranges::forward_range<const V>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<V>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<P>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+  }
+
+  // non-const: !forward_range<View> && tiny-range<Pattern> -> outer-iterator<Const = false>
+  // const: !forward_range<View> -> disabled
+  {
+    using V = InputView;
+    using P = ForwardTinyView;
+
+    static_assert(!std::ranges::forward_range<V>);
+    static_assert(std::ranges::forward_range<P>);
+
+    std::ranges::lazy_split_view<V, P> v;
+    auto it = v.begin();
+    static_assert(std::is_same_v<decltype(it)::iterator_concept, std::input_iterator_tag>);
+    static_assert(std::is_same_v<decltype(*(*it).begin()), char&>);
+
+    static_assert(ConstBeginDisabled<decltype(v)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/constraints.compile.pass.cpp
new file mode 100644
index 0000000..bf9dd99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/constraints.compile.pass.cpp
@@ -0,0 +1,210 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<input_range V, forward_range Pattern>
+//   requires view<V> && view<Pattern> &&
+//            indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to> &&
+//            (forward_range<V> || tiny-range<Pattern>)
+// class lazy_split_view;
+
+#include <functional>
+#include <ranges>
+
+#include "test_iterators.h"
+#include "types.h"
+
+struct ForwardRange {
+  forward_iterator<int*> begin() const;
+  forward_iterator<int*> end() const;
+};
+static_assert( std::ranges::forward_range<ForwardRange>);
+
+template <class View, class Pattern>
+concept CanInstantiate = requires {
+  typename std::ranges::lazy_split_view<View, Pattern>;
+};
+
+// All constraints satisfied (`View` and `Pattern` are forward views).
+namespace test1 {
+
+  using View = ForwardView;
+  using Pattern = ForwardView;
+  static_assert( std::ranges::forward_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert( CanInstantiate<View, Pattern>);
+
+} // namespace test1
+
+// All constraints satisfied (`View` is an input view and `Pattern` is a tiny view).
+namespace test2 {
+
+  using View = InputView;
+  using Pattern = ForwardTinyView;
+  static_assert( std::ranges::input_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert( CanInstantiate<View, Pattern>);
+
+} // namespace test2
+
+// `View` is not an input range.
+namespace test3 {
+
+  struct AlmostInputIterator {
+    using value_type = char;
+    using difference_type = ptrdiff_t;
+    using iterator_concept = int;
+
+    constexpr const char& operator*() const;
+    constexpr AlmostInputIterator& operator++();
+    constexpr void operator++(int);
+    constexpr bool operator==(const AlmostInputIterator&) const;
+  };
+
+  static_assert( std::input_or_output_iterator<AlmostInputIterator>);
+  static_assert(!std::input_iterator<AlmostInputIterator>);
+
+  struct NonInputView : std::ranges::view_base {
+    AlmostInputIterator begin() const;
+    AlmostInputIterator end() const;
+  };
+
+  using View = NonInputView;
+  using Pattern = ForwardTinyView;
+  static_assert(!std::ranges::input_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test3
+
+// `View` is not a view.
+namespace test4 {
+
+  using View = ForwardRange;
+  using Pattern = ForwardView;
+  static_assert( std::ranges::input_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  static_assert(!std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test4
+
+// `Pattern` is not a forward range.
+namespace test5 {
+
+  using View = ForwardView;
+  using Pattern = InputView;
+  static_assert( std::ranges::input_range<View>);
+  static_assert(!std::ranges::forward_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test5
+
+// Not indirectly comparable.
+namespace test6 {
+
+  struct Empty{};
+  struct IntForwardView : std::ranges::view_base {
+    constexpr forward_iterator<Empty*> begin() const { return {}; }
+    constexpr forward_iterator<Empty*> end() const { return {}; }
+  };
+
+  using View = ForwardView;
+  using Pattern = IntForwardView;
+  static_assert( std::ranges::input_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert(!std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test6
+
+// `View` is an input range and `Pattern` is not a tiny range.
+namespace test7 {
+
+  using View = InputView;
+  using Pattern = ForwardView;
+  static_assert( std::ranges::input_range<View>);
+  static_assert(!std::ranges::forward_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  LIBCPP_STATIC_ASSERT(!std::ranges::__tiny_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test7
+
+// `View` is an input range and `Pattern` is almost a tiny range, except the `size()` function is not `constexpr`.
+namespace test8 {
+
+  struct AlmostTinyRange : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+    static size_t size() { return 1; }
+  };
+
+  using View = InputView;
+  using Pattern = AlmostTinyRange;
+  static_assert( std::ranges::input_range<View>);
+  static_assert(!std::ranges::forward_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  LIBCPP_STATIC_ASSERT(!std::ranges::__tiny_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test8
+
+// `View` is an input range and `Pattern` is almost a tiny range, except the `size()` returns a number `>2`.
+namespace test9 {
+
+  struct AlmostTinyRange : std::ranges::view_base {
+    int* begin() const;
+    int* end() const;
+    constexpr static size_t size() { return 2; }
+  };
+
+  using View = InputView;
+  using Pattern = ForwardView;
+  static_assert( std::ranges::input_range<View>);
+  static_assert(!std::ranges::forward_range<View>);
+  static_assert( std::ranges::forward_range<Pattern>);
+  LIBCPP_STATIC_ASSERT(!std::ranges::__tiny_range<Pattern>);
+  static_assert( std::ranges::view<View>);
+  static_assert( std::ranges::view<Pattern>);
+  static_assert( std::indirectly_comparable<
+      std::ranges::iterator_t<View>, std::ranges::iterator_t<Pattern>, std::ranges::equal_to>);
+  static_assert(!CanInstantiate<View, Pattern>);
+
+} // namespace test9
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctad.compile.pass.cpp
new file mode 100644
index 0000000..d71c0d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctad.compile.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class R, class P>
+// lazy_split_view(R&&, P&&) -> lazy_split_view<views::all_t<R>, views::all_t<P>>;
+//
+// template <input_range R>
+// lazy_split_view(R&&, range_value_t<R>) -> lazy_split_view<views::all_t<R>, single_view<range_value_t<R>>>;
+
+#include <ranges>
+
+#include <concepts>
+#include <type_traits>
+#include <utility>
+#include "types.h"
+
+struct ForwardRange {
+  forward_iterator<const char*> begin() const;
+  forward_iterator<const char*> end() const;
+};
+static_assert( std::ranges::forward_range<ForwardRange>);
+
+struct InputRange {
+  cpp20_input_iterator<const char*> begin() const;
+  sentinel_wrapper<cpp20_input_iterator<const char*>> end() const;
+};
+static_assert(std::ranges::input_range<InputRange>);
+
+template <class I1, class I2, class ExpectedView, class ExpectedPattern>
+constexpr void test() {
+  I1 i1{};
+  I2 i2{};
+
+  std::ranges::lazy_split_view v(std::move(i1), std::move(i2));
+  static_assert(std::same_as<decltype(v), std::ranges::lazy_split_view<ExpectedView, ExpectedPattern>>);
+  using O = decltype(std::move(v).base());
+  static_assert(std::same_as<O, ExpectedView>);
+}
+
+constexpr void testCtad() {
+  // (Range, Pattern)
+  test<ForwardView, ForwardView, ForwardView, ForwardView>();
+  test<ForwardRange, ForwardRange, std::ranges::views::all_t<ForwardRange>, std::ranges::views::all_t<ForwardRange>>();
+
+  // (Range, RangeElement)
+  test<ForwardRange, char, std::ranges::views::all_t<ForwardRange>, std::ranges::single_view<char>>();
+  test<InputRange, char, std::ranges::views::all_t<InputRange>, std::ranges::single_view<char>>();
+
+  // (Range, RangeElement) with implicit conversion.
+  test<ForwardRange, bool, std::ranges::views::all_t<ForwardRange>, std::ranges::single_view<char>>();
+  test<InputRange, bool, std::ranges::views::all_t<InputRange>, std::ranges::single_view<char>>();
+
+  // Note: CTAD from (InputRange, ForwardTinyRange) doesn't work -- the deduction guide wraps the pattern in
+  // `views::all_t`, resulting in `views::owning_view<ForwardTinyRange>`. That type would never satisfy `tiny-range`
+  // because `views::owning_view` contains a member function `size()` that shadows the static `size()` in
+  // `ForwardTinyRange`.
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.copy_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.copy_move.pass.cpp
new file mode 100644
index 0000000..c6192f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.copy_move.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test the implicitly-generated copy and move constructors since `lazy_split_view` has non-trivial members.
+
+#include <ranges>
+
+#include <cassert>
+#include <string_view>
+#include <utility>
+#include "types.h"
+
+constexpr bool test() {
+  // Can copy `lazy_split_view`.
+  {
+    // Forward range.
+    {
+      std::ranges::lazy_split_view<std::string_view, std::string_view> v1("abc def", " ");
+      auto v2 = v1;
+      assert(v2.base() == v1.base());
+    }
+
+    // Input range.
+    {
+      SplitViewInput v1("abc def", ' ');
+      auto v2 = v1;
+      assert(v2.base() == v1.base());
+    }
+  }
+
+  // Can move `lazy_split_view`.
+  {
+    // Forward range.
+    {
+      std::string_view base = "abc def";
+      std::ranges::lazy_split_view<std::string_view, std::string_view> v1(base, " ");
+      auto v2 = std::move(v1);
+      assert(v2.base() == base);
+    }
+
+    // Input range.
+    {
+      InputView base("abc def");
+      SplitViewInput v1(base, ' ');
+      auto v2 = std::move(v1);
+      assert(v2.base() == base);
+    }
+  }
+
+  // `non-propagating-cache` is not copied.
+  {
+    SplitViewInput v1("abc def ghi", ' ');
+    auto outer_iter1 = v1.begin();
+    ++outer_iter1;
+    auto val1 = *outer_iter1;
+    auto i1 = val1.begin();
+    assert(*i1 == 'd');
+    ++i1;
+    assert(*i1 == 'e');
+
+    auto v2 = v1;
+    auto val2 = *v2.begin();
+    auto i2 = val2.begin();
+    assert(*i2 == 'a');
+    ++i2;
+    assert(*i2 == 'b');
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.default.pass.cpp
new file mode 100644
index 0000000..e53bd0c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.default.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  lazy_split_view() requires default_initializable<V> && default_initializable<P> = default;
+
+#include <ranges>
+
+#include <cassert>
+#include "types.h"
+
+struct ThrowingDefaultCtorForwardView : std::ranges::view_base {
+  ThrowingDefaultCtorForwardView() noexcept(false);
+  forward_iterator<int*> begin() const;
+  forward_iterator<int*> end() const;
+};
+
+struct NoDefaultCtorForwardView : std::ranges::view_base {
+  NoDefaultCtorForwardView() = delete;
+  forward_iterator<int*> begin() const;
+  forward_iterator<int*> end() const;
+};
+
+static_assert( std::is_default_constructible_v<std::ranges::lazy_split_view<ForwardView, ForwardView>>);
+static_assert(!std::is_default_constructible_v<std::ranges::lazy_split_view<NoDefaultCtorForwardView, ForwardView>>);
+static_assert(!std::is_default_constructible_v<std::ranges::lazy_split_view<ForwardView, NoDefaultCtorForwardView>>);
+
+static_assert( std::is_nothrow_default_constructible_v<std::ranges::lazy_split_view<ForwardView, ForwardView>>);
+static_assert(!std::is_nothrow_default_constructible_v<ThrowingDefaultCtorForwardView>);
+static_assert(!std::is_nothrow_default_constructible_v<
+    std::ranges::lazy_split_view<ThrowingDefaultCtorForwardView, ForwardView>>);
+
+constexpr bool test() {
+  {
+    std::ranges::lazy_split_view<CopyableView, ForwardView> v;
+    assert(v.base() == CopyableView());
+  }
+
+  {
+    std::ranges::lazy_split_view<CopyableView, ForwardView> v = {};
+    assert(v.base() == CopyableView());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.range.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.range.pass.cpp
new file mode 100644
index 0000000..a822175
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.range.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <input_range Range>
+//   requires constructible_from<View, views::all_t<Range>> &&
+//             constructible_from<Pattern, single_view<range_value_t<Range>>>
+// constexpr lazy_split_view(Range&& r, range_value_t<Range> e);
+
+#include <ranges>
+
+#include <cassert>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include <utility>
+#include "types.h"
+
+struct ElementWithCounting {
+  int* times_copied = nullptr;
+  int* times_moved = nullptr;
+
+  constexpr ElementWithCounting(int& copies_ctr, int& moves_ctr) : times_copied(&copies_ctr), times_moved(&moves_ctr) {}
+
+  constexpr ElementWithCounting(const ElementWithCounting& rhs)
+      : times_copied(rhs.times_copied)
+      , times_moved(rhs.times_moved) {
+    ++(*times_copied);
+  }
+  constexpr ElementWithCounting(ElementWithCounting&& rhs)
+      : times_copied(rhs.times_copied)
+      , times_moved(rhs.times_moved) {
+    ++(*times_moved);
+  }
+
+  constexpr bool operator==(const ElementWithCounting&) const { return true; }
+};
+
+struct RangeWithCounting {
+  using value_type = ElementWithCounting;
+
+  int* times_copied = nullptr;
+  int* times_moved = nullptr;
+
+  constexpr RangeWithCounting(int& copies_ctr, int& moves_ctr) : times_copied(&copies_ctr), times_moved(&moves_ctr) {}
+
+  constexpr RangeWithCounting(const RangeWithCounting& rhs)
+    : times_copied(rhs.times_copied)
+    , times_moved(rhs.times_moved) {
+    ++(*times_copied);
+  }
+  constexpr RangeWithCounting(RangeWithCounting&& rhs)
+    : times_copied(rhs.times_copied)
+    , times_moved(rhs.times_moved) {
+    ++(*times_moved);
+  }
+
+  constexpr const ElementWithCounting* begin() const { return nullptr; }
+  constexpr const ElementWithCounting* end() const { return nullptr; }
+
+  constexpr RangeWithCounting& operator=(const RangeWithCounting&) = default;
+  constexpr RangeWithCounting& operator=(RangeWithCounting&&) = default;
+  constexpr bool operator==(const RangeWithCounting&) const { return true; }
+};
+static_assert( std::ranges::forward_range<RangeWithCounting>);
+static_assert(!std::ranges::view<RangeWithCounting>);
+
+struct StrView : std::ranges::view_base {
+  std::string_view buffer_;
+  constexpr explicit StrView() = default;
+  constexpr StrView(const char* ptr) : buffer_(ptr) {}
+  // Intentionally don't forward to range constructor for std::string_view since
+  // this test needs to work on C++20 as well and the range constructor is only for
+  // C++23 and later.
+  template <std::ranges::range R>
+  constexpr StrView(R&& r) : buffer_(r.begin(), r.end()) {}
+  constexpr const char* begin() const { return buffer_.begin(); }
+  constexpr const char* end() const { return buffer_.end(); }
+  constexpr bool operator==(const StrView& rhs) const { return buffer_ == rhs.buffer_; }
+};
+static_assert( std::ranges::random_access_range<StrView>);
+static_assert( std::ranges::view<StrView>);
+static_assert( std::is_copy_constructible_v<StrView>);
+
+constexpr bool test() {
+  {
+    using V = std::ranges::lazy_split_view<StrView, StrView>;
+
+    // Calling the constructor with `(std::string, range_value_t)`.
+    {
+      std::string input;
+      V v(input, ' ');
+      assert(v.base() == input);
+    }
+
+    // Calling the constructor with `(StrView, range_value_t)`.
+    {
+      StrView input("abc def");
+      V v(input, ' ');
+      assert(v.base() == input);
+    }
+
+    struct Empty {};
+    static_assert(!std::is_constructible_v<V, Empty, std::string_view>);
+    static_assert(!std::is_constructible_v<V, std::string_view, Empty>);
+  }
+
+  // Make sure the arguments are moved, not copied.
+  {
+    using Range = RangeWithCounting;
+    using Element = ElementWithCounting;
+    using Pattern = std::ranges::single_view<Element>;
+
+    // Arguments are lvalues.
+    {
+      using View = std::ranges::ref_view<Range>;
+
+      int range_copied = 0, range_moved = 0, element_copied = 0, element_moved = 0;
+      Range range(range_copied, range_moved);
+      Element element(element_copied, element_moved);
+
+      std::ranges::lazy_split_view<View, Pattern> v(range, element);
+      assert(range_copied == 0); // `ref_view` does neither copy...
+      assert(range_moved == 0); // ...nor move the element.
+      assert(element_copied == 1); // The element is copied into the argument...
+      assert(element_moved == 1); // ...and moved into the member variable.
+    }
+
+    // Arguments are rvalues.
+    {
+      using View = std::ranges::owning_view<Range>;
+
+      int range_copied = 0, range_moved = 0, element_copied = 0, element_moved = 0;
+      std::ranges::lazy_split_view<View, Pattern> v(
+          Range(range_copied, range_moved), Element(element_copied, element_moved));
+      assert(range_copied == 0);
+      assert(range_moved == 1); // `owning_view` moves the given argument.
+      assert(element_copied == 0);
+      assert(element_moved == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.view.pass.cpp
new file mode 100644
index 0000000..264e883
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/ctor.view.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr lazy_split_view(View base, Pattern pattern);
+
+#include <ranges>
+
+#include <cassert>
+#include <string_view>
+#include <utility>
+#include "types.h"
+
+struct ViewWithCounting : std::ranges::view_base {
+  int* times_copied = nullptr;
+  int* times_moved = nullptr;
+
+  constexpr ViewWithCounting(int& copies_ctr, int& moves_ctr) : times_copied(&copies_ctr), times_moved(&moves_ctr) {}
+
+  constexpr ViewWithCounting(const ViewWithCounting& rhs)
+    : times_copied(rhs.times_copied)
+    , times_moved(rhs.times_moved) {
+    ++(*times_copied);
+  }
+  constexpr ViewWithCounting(ViewWithCounting&& rhs)
+    : times_copied(rhs.times_copied)
+    , times_moved(rhs.times_moved) {
+    ++(*times_moved);
+  }
+
+  constexpr const char* begin() const { return nullptr; }
+  constexpr const char* end() const { return nullptr; }
+
+  constexpr ViewWithCounting& operator=(const ViewWithCounting&) = default;
+  constexpr ViewWithCounting& operator=(ViewWithCounting&&) = default;
+  constexpr bool operator==(const ViewWithCounting&) const { return true; }
+};
+static_assert(std::ranges::forward_range<ViewWithCounting>);
+static_assert(std::ranges::view<ViewWithCounting>);
+
+constexpr bool test() {
+  // Calling the constructor with `(ForwardView, ForwardView)`.
+  {
+    CopyableView input = "abc def";
+    std::ranges::lazy_split_view<CopyableView, CopyableView> v(input, " ");
+    assert(v.base() == input);
+  }
+
+  // Calling the constructor with `(InputView, TinyView)`.
+  {
+    InputView input = "abc def";
+    std::ranges::lazy_split_view<InputView, ForwardTinyView> v(input, ' ');
+    // Note: `InputView` isn't equality comparable.
+    (void)v;
+  }
+
+  // Make sure the arguments are moved, not copied.
+  {
+    using View = ViewWithCounting;
+    using Pattern = ViewWithCounting;
+
+    // Arguments are lvalues.
+    {
+      int view_copied = 0, view_moved = 0, pattern_copied = 0, pattern_moved = 0;
+      View view(view_copied, view_moved);
+      Pattern pattern(pattern_copied, pattern_moved);
+
+      std::ranges::lazy_split_view<View, Pattern> v(view, pattern);
+      assert(view_copied == 1); // The local variable is copied into the argument.
+      assert(view_moved == 1);
+      assert(pattern_copied == 1);
+      assert(pattern_moved == 1);
+    }
+
+    // Arguments are rvalues.
+    {
+      int view_copied = 0, view_moved = 0, pattern_copied = 0, pattern_moved = 0;
+      std::ranges::lazy_split_view<View, Pattern> v(
+          View(view_copied, view_moved), Pattern(pattern_copied, pattern_moved));
+      assert(view_copied == 0);
+      assert(view_moved == 1);
+      assert(pattern_copied == 0);
+      assert(pattern_moved == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/end.pass.cpp
new file mode 100644
index 0000000..690ac7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/end.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end() requires forward_range<View> && common_range<View>;
+// constexpr auto end() const;
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_iterators.h"
+#include "types.h"
+
+struct ForwardViewCommonIfConst : std::ranges::view_base {
+  std::string_view view_;
+  constexpr explicit ForwardViewCommonIfConst() = default;
+  constexpr ForwardViewCommonIfConst(const char* ptr) : view_(ptr) {}
+  constexpr ForwardViewCommonIfConst(std::string_view v) : view_(v) {}
+  constexpr ForwardViewCommonIfConst(ForwardViewCommonIfConst&&) = default;
+  constexpr ForwardViewCommonIfConst& operator=(ForwardViewCommonIfConst&&) = default;
+  constexpr ForwardViewCommonIfConst(const ForwardViewCommonIfConst&) = default;
+  constexpr ForwardViewCommonIfConst& operator=(const ForwardViewCommonIfConst&) = default;
+  constexpr forward_iterator<char*> begin() { return forward_iterator<char*>(nullptr); }
+  constexpr std::default_sentinel_t end()  { return std::default_sentinel; }
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(view_.begin()); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(view_.end()); }
+};
+bool operator==(forward_iterator<char*>, std::default_sentinel_t) { return false; }
+
+struct ForwardViewNonCommonRange : std::ranges::view_base {
+  std::string_view view_;
+  constexpr explicit ForwardViewNonCommonRange() = default;
+  constexpr ForwardViewNonCommonRange(const char* ptr) : view_(ptr) {}
+  constexpr ForwardViewNonCommonRange(std::string_view v) : view_(v) {}
+  constexpr ForwardViewNonCommonRange(ForwardViewNonCommonRange&&) = default;
+  constexpr ForwardViewNonCommonRange& operator=(ForwardViewNonCommonRange&&) = default;
+  constexpr ForwardViewNonCommonRange(const ForwardViewNonCommonRange&) = default;
+  constexpr ForwardViewNonCommonRange& operator=(const ForwardViewNonCommonRange&) = default;
+  constexpr forward_iterator<char*> begin() { return forward_iterator<char*>(nullptr); }
+  constexpr std::default_sentinel_t end()  { return std::default_sentinel; }
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(view_.begin()); }
+  constexpr std::default_sentinel_t end() const { return std::default_sentinel; }
+};
+bool operator==(forward_iterator<const char*>, std::default_sentinel_t) { return false; }
+
+constexpr bool test() {
+  // non-const: forward_range<V> && simple_view<V> && simple_view<P> -> outer-iterator<Const = true>
+  // const: forward_range<V> && common_range<V> -> outer-iterator<Const = true>
+  {
+    using V = ForwardView;
+    using P = V;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(std::ranges::common_range<const V>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<V>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<P>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.end();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.end();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+  }
+
+  // non-const: forward_range<V> && common_range<V> && simple_view<V> && !simple_view<P> -> outer-iterator<Const=false>
+  // const: forward_range<V> && forward_range<const V> && common_range<const V> -> outer-iterator<Const = false>
+  {
+    using V = ForwardView;
+    using P = ForwardDiffView;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(std::ranges::common_range<V>);
+    LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<V>);
+    LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<P>);
+    static_assert(std::ranges::forward_range<const V>);
+    static_assert(std::ranges::common_range<const V>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.end();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.end();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+  }
+
+  // non-const: forward_range<V> && !common_range<V> -> disabled
+  // const: forward_range<V> && forward_range<const V> && common_range<const V> -> outer-iterator<Const = true>
+  {
+    using V = ForwardViewCommonIfConst;
+    using P = V;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(!std::ranges::common_range<V>);
+    static_assert(std::ranges::forward_range<const V>);
+    static_assert(std::ranges::common_range<const V>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), char&>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.begin();
+      static_assert(std::is_same_v<decltype(it)::iterator_concept, std::forward_iterator_tag>);
+      static_assert(std::is_same_v<decltype(*(*it).begin()), const char&>);
+    }
+  }
+
+  // non-const: forward_range<V> && !common_range<V> -> disabled
+  // const: forward_range<V> && forward_range<const V> && !common_range<const V> -> outer-iterator<Const = false>
+  {
+    using V = ForwardViewNonCommonRange;
+    using P = V;
+
+    static_assert(std::ranges::forward_range<V>);
+    static_assert(!std::ranges::common_range<V>);
+    static_assert(std::ranges::forward_range<const V>);
+    static_assert(!std::ranges::common_range<const V>);
+
+    {
+      std::ranges::lazy_split_view<V, P> v;
+      auto it = v.end();
+      static_assert(std::same_as<decltype(it), std::default_sentinel_t>);
+    }
+
+    {
+      const std::ranges::lazy_split_view<V, P> cv;
+      auto it = cv.end();
+      static_assert(std::same_as<decltype(it), std::default_sentinel_t>);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/general.pass.cpp
new file mode 100644
index 0000000..4214532
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/general.pass.cpp
@@ -0,0 +1,433 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class View, class Pattern>
+// class std::ranges::lazy_split_view;
+//
+// These test check the output `lazy_split_view` produces for a variety of inputs, including many corner cases, with no
+// restrictions on which member functions can be called.
+
+#include <ranges>
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <map>
+#include <string_view>
+#include <string>
+#include <utility>
+#include <vector>
+#include "types.h"
+
+// Basic utility to convert a range to a string-like type. This handles ranges
+// that do not contain character types and can work with non-contiguous inputs.
+template <class Char>
+class BasicSmallString {
+  std::vector<Char> buffer_{};
+
+public:
+  constexpr BasicSmallString(std::basic_string_view<Char> v)
+    requires (std::same_as<Char, char> ||
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+              std::same_as<Char, wchar_t> ||
+#endif
+              std::same_as<Char, char8_t> ||
+              std::same_as<Char, char16_t> ||
+              std::same_as<Char, char32_t>)
+    : buffer_(v.begin(), v.end())
+  {}
+
+  template <class I, class S>
+  constexpr BasicSmallString(I b, const S& e) {
+    for (; b != e; ++b) {
+      buffer_.push_back(*b);
+    }
+  }
+
+  template <std::ranges::range R>
+  constexpr BasicSmallString(R&& from) : BasicSmallString(from.begin(), from.end()) {}
+
+  friend constexpr bool operator==(const BasicSmallString& lhs, const BasicSmallString& rhs) {
+    return lhs.buffer_ == rhs.buffer_;
+  }
+};
+
+template <std::ranges::view View, std::ranges::range Expected>
+constexpr bool is_equal(View& view, const Expected& expected) {
+  using Char = std::ranges::range_value_t<std::ranges::range_value_t<View>>;
+  using Str = BasicSmallString<Char>;
+
+  auto actual_it = view.begin();
+  auto expected_it = expected.begin();
+  for (; actual_it != view.end() && expected_it != expected.end(); ++actual_it, ++expected_it) {
+    if (Str(*actual_it) != Str(*expected_it))
+      return false;
+  }
+
+  return actual_it == view.end() && expected_it == expected.end();
+}
+
+template <class T, class Separator, class U, size_t M>
+constexpr bool test_function_call(T&& input, Separator&& separator, std::array<U, M> expected) {
+  std::ranges::lazy_split_view v(input, separator);
+  return is_equal(v, expected);
+}
+
+template <class T, class Separator, class U, size_t M>
+constexpr bool test_with_piping(T&& input, Separator&& separator, std::array<U, M> expected) {
+  auto expected_it = expected.begin();
+  for (auto e : input | std::ranges::views::lazy_split(separator)) {
+    if (expected_it == expected.end())
+      return false;
+    if (!std::ranges::equal(e, *expected_it))
+      return false;
+
+    ++expected_it;
+  }
+
+  return expected_it == expected.end();
+}
+
+constexpr bool test_l_r_values() {
+  using namespace std::string_view_literals;
+
+  // Both lvalues and rvalues can be used as input.
+  {
+    // Lvalues.
+    {
+      auto input = "abc"sv;
+      auto sep = " "sv;
+      [[maybe_unused]] std::ranges::lazy_split_view v(input, sep);
+    }
+
+    // Const lvalues.
+    {
+      const auto input = "abc"sv;
+      const auto sep = " "sv;
+      [[maybe_unused]] std::ranges::lazy_split_view v(input, sep);
+    }
+
+    // Rvalues.
+    {
+      auto input = "abc"sv;
+      auto sep = " "sv;
+      [[maybe_unused]] std::ranges::lazy_split_view v(std::move(input), std::move(sep));
+    }
+
+    // Const rvalues.
+    {
+      const auto input = "abc"sv;
+      const auto sep = " "sv;
+      [[maybe_unused]] std::ranges::lazy_split_view v(std::move(input), std::move(sep));
+    }
+  }
+
+  return true;
+}
+
+constexpr bool test_string_literal_separator() {
+  using namespace std::string_view_literals;
+
+  // Splitting works as expected when the separator is a single character literal.
+  {
+    std::ranges::lazy_split_view v("abc def"sv, ' ');
+    assert(is_equal(v, std::array{"abc"sv, "def"sv}));
+  }
+
+  // Counterintuitively, a seemingly equivalent separator expressed as a string literal doesn't match anything. This is
+  // because of the implicit terminating null in the literal.
+  {
+    std::ranges::lazy_split_view v("abc def"sv, " ");
+    assert(is_equal(v, std::array{"abc def"sv}));
+  }
+
+  // To illustrate the previous point further, the separator is actually a two-character string literal: `{' ', '\0'}`.
+  // Should the input string contain that two-character sequence, the separator would match.
+  {
+    std::ranges::lazy_split_view v("abc \0def"sv, " ");
+    assert(is_equal(v, std::array{"abc"sv, "def"sv}));
+  }
+
+  return true;
+}
+
+// Make sure that a string literal and a `string_view` produce the same results (which isn't always the case, see
+// below).
+template <class T>
+constexpr std::string_view sv(T&& str) {
+  return std::string_view(str);
+};
+
+template <class T, class Separator, class U, size_t M>
+constexpr void test_one(T&& input, Separator&& separator, std::array<U, M> expected) {
+  assert(test_function_call(input, separator, expected));
+  assert(test_with_piping(input, separator, expected));
+
+  // In addition to the `(ForwardView, ForwardView)` case, test the `(ForwardView, tiny-range)` and `(InputView,
+  // tiny-range)` cases (all of which have unique code paths).
+  if constexpr (std::is_same_v<std::remove_reference_t<Separator>, char>) {
+    assert(test_function_call(CopyableView(input), ForwardTinyView(separator), expected));
+    assert(test_with_piping(CopyableView(input), ForwardTinyView(separator), expected));
+
+    assert(test_function_call(InputView(input), ForwardTinyView(separator), expected));
+    assert(test_with_piping(InputView(input), ForwardTinyView(separator), expected));
+  }
+}
+
+constexpr bool test_string_literals() {
+  // These tests show characteristic examples of how using string literals with `lazy_split_view` produces unexpected
+  // results due to the implicit terminating null that is treated as part of the range.
+
+  using namespace std::string_view_literals;
+
+  char short_sep = ' ';
+  auto long_sep = "12"sv;
+
+  // When splitting a string literal, only the last segment will be null-terminated (getting the terminating null from
+  // the original range).
+  {
+    std::array expected = {"abc"sv, std::string_view("def", sizeof("def"))};
+
+    assert(test_function_call("abc def", short_sep, expected));
+    assert(test_with_piping("abc def", short_sep, expected));
+    assert(test_function_call("abc12def", long_sep, expected));
+    assert(test_with_piping("abc12def", long_sep, expected));
+  }
+
+  // Empty string.
+  {
+    // Because an empty string literal contains an implicit terminating null, the output will contain one segment.
+    std::array expected = {std::string_view("", 1)};
+
+    assert(test_function_call("", short_sep, expected));
+    assert(test_with_piping("", short_sep, expected));
+    assert(test_function_call("", long_sep, expected));
+    assert(test_with_piping("", long_sep, expected));
+  }
+
+  // Terminating null in the separator -- the character literal `' '` and the seemingly equivalent string literal `" "`
+  // are treated differently due to the presence of an implicit `\0` in the latter.
+  {
+    const char input[] = "abc def";
+    std::array expected_unsplit = {std::string_view(input, sizeof(input))};
+    std::array expected_split = {"abc"sv, std::string_view("def", sizeof("def"))};
+
+    assert(test_function_call(input, " ", expected_unsplit));
+    assert(test_function_call("abc \0def", " ", expected_split));
+    // Note: string literals don't work with piping because arrays decay to pointers, and pointers don't model `range`.
+  }
+
+  // Empty separator.
+  {
+    auto empty_sep = ""sv;
+    std::array expected = {"a"sv, "b"sv, "c"sv, "\0"sv};
+
+    assert(test_function_call("abc", empty_sep, expected));
+    assert(test_with_piping("abc", empty_sep, expected));
+  }
+
+  return true;
+}
+
+bool test_nontrivial_characters() {
+  // Try a deliberately heavyweight "character" type to see if it triggers any corner cases.
+
+  using Map = std::map<std::string, int>;
+  using Vec = std::vector<Map>;
+
+  Map sep = {{"yyy", 999}};
+  Map m1 = {
+    {"a", 1},
+    {"bc", 2},
+  };
+  Map m2 = {
+    {"def", 3},
+  };
+  Map m3 = {
+    {"g", 4},
+    {"hijk", 5},
+  };
+
+  Vec expected1 = {m1, m2};
+  Vec expected2 = {m3};
+
+  std::ranges::lazy_split_view v(Vec{m1, m2, sep, m3}, sep);
+
+  // Segment 1: {m1, m2}
+  auto outer = v.begin();
+  assert(outer != v.end());
+  auto inner = (*outer).begin();
+  assert(*inner++ == m1);
+  assert(*inner++ == m2);
+  assert(inner == (*outer).end());
+
+  // Segment 2: {m3}
+  ++outer;
+  assert(outer != v.end());
+  inner = (*outer).begin();
+  assert(*inner++ == m3);
+  assert(inner == (*outer).end());
+
+  ++outer;
+  assert(outer == v.end());
+
+  return true;
+}
+
+constexpr bool main_test() {
+  using namespace std::string_view_literals;
+
+  char short_sep = ' ';
+  auto long_sep = "12"sv;
+
+  // One separator.
+  {
+    std::array expected = {"abc"sv, "def"sv};
+    test_one("abc def"sv, short_sep, expected);
+    test_one("abc12def"sv, long_sep, expected);
+  }
+
+  // Several separators in a row.
+  {
+    std::array expected = {"abc"sv, ""sv, ""sv, ""sv, "def"sv};
+    test_one("abc    def"sv, short_sep, expected);
+    test_one("abc12121212def"sv, long_sep, expected);
+  }
+
+  // Trailing separator.
+  {
+    std::array expected = {"abc"sv, "def"sv, ""sv};
+    test_one("abc def "sv, short_sep, expected);
+    test_one("abc12def12"sv, long_sep, expected);
+  }
+
+  // Leading separator.
+  {
+    std::array expected = {""sv, "abc"sv, "def"sv};
+    test_one(" abc def"sv, short_sep, expected);
+    test_one("12abc12def"sv, long_sep, expected);
+  }
+
+  // No separator.
+  {
+    std::array expected = {"abc"sv};
+    test_one("abc"sv, short_sep, expected);
+    test_one("abc"sv, long_sep, expected);
+  }
+
+  // Input consisting of a single separator.
+  {
+    std::array expected = {""sv, ""sv};
+    test_one(" "sv, short_sep, expected);
+    test_one("12"sv, long_sep, expected);
+  }
+
+  // Input consisting of only separators.
+  {
+    std::array expected = {""sv, ""sv, ""sv, ""sv};
+    test_one("   "sv, short_sep, expected);
+    test_one("121212"sv, long_sep, expected);
+  }
+
+  // The separator and the string use the same character only.
+  {
+    auto overlapping_sep = "aaa"sv;
+    std::array expected = {""sv, "aa"sv};
+    test_one("aaaaa"sv, overlapping_sep, expected);
+  }
+
+  // Many redundant separators.
+  {
+    std::array expected = {""sv, ""sv, "abc"sv, ""sv, ""sv, "def"sv, ""sv, ""sv};
+    test_one("  abc   def  "sv, short_sep, expected);
+    test_one("1212abc121212def1212"sv, long_sep, expected);
+  }
+
+  // Separators after every character.
+  {
+    std::array expected = {""sv, "a"sv, "b"sv, "c"sv, ""sv};
+    test_one(" a b c "sv, short_sep, expected);
+    test_one("12a12b12c12"sv, long_sep, expected);
+  }
+
+  // Overlap between the separator and the string (see https://wg21.link/lwg3505).
+  {
+    auto overlapping_sep = "ab"sv;
+    std::array expected = {"a"sv, "aa"sv, ""sv, "b"sv};
+    test_one("aabaaababb"sv, overlapping_sep, expected);
+  }
+
+  // Empty input.
+  {
+    std::array<std::string_view, 0> expected = {};
+    test_one(""sv, short_sep, expected);
+    test_one(""sv, long_sep, expected);
+  }
+
+  // Empty separator.
+  {
+    auto empty_sep = ""sv;
+    std::array expected = {"a"sv, "b"sv, "c"sv};
+    test_one("abc"sv, empty_sep, expected);
+    test_one("abc"sv, empty_sep, expected);
+  }
+
+  // Terminating null as a separator.
+  {
+    std::array expected = {"abc"sv, "def"sv};
+    test_one("abc\0def"sv, '\0', expected);
+    test_one("abc\0\0def"sv, "\0\0"sv, expected);
+  }
+
+  // Different character types.
+  {
+    // `char`.
+    test_function_call("abc def", ' ', std::array{"abc", "def"});
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    // `wchar_t`.
+    test_function_call(L"abc def", L' ', std::array{L"abc", L"def"});
+#endif
+    // `char8_t`.
+    test_function_call(u8"abc def", u8' ', std::array{u8"abc", u8"def"});
+    // `char16_t`.
+    test_function_call(u"abc def", u' ', std::array{u"abc", u"def"});
+    // `char32_t`.
+    test_function_call(U"abc def", U' ', std::array{U"abc", U"def"});
+  }
+
+  // Non-character input.
+  {
+    std::array expected = {std::array{1, 2, 3}, std::array{4, 5, 6}};
+    test_one(std::array{1, 2, 3, 0, 4, 5, 6}, 0, expected);
+    test_one(std::array{1, 2, 3, 0, 0, 0, 4, 5, 6}, std::array{0, 0, 0}, expected);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  main_test();
+  static_assert(main_test());
+
+  test_string_literals();
+  static_assert(test_string_literals());
+
+  test_l_r_values();
+  static_assert(test_l_r_values());
+
+  test_string_literal_separator();
+  static_assert(test_string_literal_separator());
+
+  // Note: map is not `constexpr`, so this test is runtime-only.
+  test_nontrivial_characters();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/base.pass.cpp
new file mode 100644
index 0000000..24ce2e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/base.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr const iterator_t<Base>& inner-iterator::base() const& noexcept;
+//
+// constexpr iterator_t<Base> inner-iterator::base() &&
+//   requires forward_range<View>;
+
+#include <ranges>
+
+#include <concepts>
+#include <utility>
+#include "../types.h"
+
+static_assert( noexcept(std::declval<InnerIterForward&>().base()));
+static_assert( noexcept(std::declval<InnerIterForward const &>().base()));
+static_assert( noexcept(std::declval<InnerIterForward const &&>().base()));
+static_assert( noexcept(std::declval<InnerIterInput&>().base()));
+static_assert( noexcept(std::declval<InnerIterInput const &>().base()));
+static_assert( noexcept(std::declval<InnerIterInput const &&>().base()));
+
+constexpr bool test() {
+  // `base` works with a forward view (two different overloads based on ref-qualification of the `inner-iterator`).
+  {
+    using BaseIter = std::ranges::iterator_t<CopyableView>;
+    CopyableView input("abc def");
+    std::ranges::lazy_split_view<CopyableView, ForwardView> v(input, " ");
+    auto i = (*v.begin()).begin();
+    const auto ci = i;
+
+    // Note: some macOS platforms seem to have trouble deducing the type when using `std::same_as` -- use the equivalent
+    // `ASSERT_SAME_TYPE` instead.
+    {
+      decltype(auto) b = i.base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+      assert(b == input.begin());
+    }
+
+    {
+      decltype(auto) b = ci.base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+      assert(b == input.begin());
+    }
+
+    {
+      decltype(auto) b = std::move(i).base();
+      ASSERT_SAME_TYPE(decltype(b), BaseIter);
+      assert(b == input.begin());
+    }
+
+    {
+      decltype(auto) b = std::move(ci).base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+      assert(b == input.begin());
+    }
+  }
+
+  // `base` works with an input view (no overloads).
+  {
+    using BaseIter = std::ranges::iterator_t<InputView>;
+    InputView input("abc def");
+    std::ranges::lazy_split_view<InputView, ForwardTinyView> v(input, ' ');
+    auto i = (*v.begin()).begin();
+    const auto ci = i;
+
+    {
+      decltype(auto) b = i.base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+    }
+
+    {
+      decltype(auto) b = ci.base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+    }
+
+    {
+      decltype(auto) b = std::move(i).base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+    }
+
+    {
+      decltype(auto) b = std::move(ci).base();
+      ASSERT_SAME_TYPE(decltype(b), const BaseIter&);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/ctor.default.pass.cpp
new file mode 100644
index 0000000..96bfc31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/ctor.default.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr inner-iterator::inner-iterator() = default;
+
+#include <ranges>
+
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    [[maybe_unused]] InnerIterForward i;
+  }
+
+  {
+    [[maybe_unused]] InnerIterInput i;
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/ctor.outer_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/ctor.outer_iterator.pass.cpp
new file mode 100644
index 0000000..4981510
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/ctor.outer_iterator.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit inner-iterator::inner-iterator(outer-iterator<Const> i);
+
+#include <ranges>
+
+#include "../types.h"
+
+static_assert(!std::is_constructible_v<InnerIterNonConst, OuterIterConst>);
+
+template <class Inner, class Outer>
+constexpr void test_impl() {
+  [[maybe_unused]] Inner i(Outer{});
+  // Verify that the constructor is `explicit`.
+  static_assert(!std::is_convertible_v<Outer, Inner>);
+}
+
+constexpr bool test() {
+  test_impl<InnerIterForward, OuterIterForward>();
+  test_impl<InnerIterInput, OuterIterInput>();
+// Is only constructible if both the outer and the inner iterators have the same constness.
+  test_impl<InnerIterConst, OuterIterConst>();
+// Note: this works because of an implicit conversion (`OuterIterNonConst` is converted to `OuterIterConst`).
+  test_impl<InnerIterConst, OuterIterNonConst>();
+  test_impl<InnerIterNonConst, OuterIterNonConst>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/deref.pass.cpp
new file mode 100644
index 0000000..dc967b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/deref.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr decltype(auto) inner-iterator::operator*() const;
+
+#include <ranges>
+
+#include "../types.h"
+
+constexpr bool test() {
+  // Can call `inner-iterator::operator*`; `View` is a forward range.
+  {
+    SplitViewDiff v("abc def", " ");
+    auto val = *v.begin();
+
+    // Non-const iterator.
+    {
+      auto i = val.begin();
+      static_assert(std::same_as<decltype(*i), char&>);
+      assert(*i == 'a');
+      assert(*(++i) == 'b');
+      assert(*(++i) == 'c');
+    }
+
+    // Const iterator.
+    {
+      const auto ci = val.begin();
+      static_assert(std::same_as<decltype(*ci), char&>);
+      assert(*ci == 'a');
+    }
+  }
+
+  // Can call `inner-iterator::operator*`; `View` is an input range.
+  {
+    SplitViewInput v("abc def", ' ');
+    auto val = *v.begin();
+
+    // Non-const iterator.
+    {
+      auto i = val.begin();
+      static_assert(std::same_as<decltype(*i), char&>);
+      assert(*i == 'a');
+      assert(*(++i) == 'b');
+      assert(*(++i) == 'c');
+    }
+
+    // Const iterator.
+    {
+      const auto ci = val.begin();
+      static_assert(std::same_as<decltype(*ci), char&>);
+      // Note: when the underlying range is an input range, `current` is stored in the `lazy_split_view` itself and
+      // shared between `inner-iterator`s. Consequently, incrementing one iterator effectively increments all of them.
+      assert(*ci == 'c');
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/equal.pass.cpp
new file mode 100644
index 0000000..5a83a05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/equal.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const inner-iterator& x, const inner-iterator& y);
+//   requires forward_range<Base>;
+//
+// friend constexpr bool operator==(const inner-iterator& x, default_sentinel_t);
+
+#include <ranges>
+
+#include <concepts>
+#include <string_view>
+#include "../types.h"
+
+template <class Iter>
+concept CanCallEquals = requires(const Iter& i) {
+  i == i;
+  i != i;
+};
+
+constexpr bool test() {
+  // When `View` is a forward range, `inner-iterator` supports both overloads of `operator==`.
+  {
+    SplitViewForward v("abc def", " ");
+    auto val = *v.begin();
+    auto b = val.begin();
+    std::same_as<std::default_sentinel_t> decltype(auto) e = val.end();
+
+    // inner-iterator == inner-iterator
+    {
+      assert(b == b);
+      assert(!(b != b));
+    }
+
+    // inner-iterator == default_sentinel
+    {
+      assert(!(b == e));
+      assert(b != e);
+
+      assert(!(b == std::default_sentinel));
+      assert(b != std::default_sentinel);
+    }
+  }
+
+  // When `View` is an input range, `inner-iterator only supports comparing an `inner-iterator` to the default sentinel.
+  {
+    SplitViewInput v("abc def", ' ');
+    auto val = *v.begin();
+    auto b = val.begin();
+    std::same_as<std::default_sentinel_t> decltype(auto) e = val.end();
+
+    static_assert(!CanCallEquals<decltype(b)>);
+
+    assert(!(b == std::default_sentinel));
+    assert(b != std::default_sentinel);
+    assert(!(b == e));
+    assert(b != e);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/increment.pass.cpp
new file mode 100644
index 0000000..e4d9eba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/increment.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr inner-iterator& inner-iterator::operator++();
+//
+// constexpr decltype(auto) inner-iterator::operator++(int);
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include "test_macros.h"
+#include "../types.h"
+
+struct EmptyView : std::ranges::view_base {
+  constexpr int* begin() const { return nullptr; }
+  constexpr int* end() const { return nullptr; }
+  constexpr static size_t size() { return 0; }
+};
+static_assert(std::ranges::forward_range<EmptyView>);
+static_assert(std::ranges::view<EmptyView>);
+LIBCPP_STATIC_ASSERT(std::ranges::__tiny_range<EmptyView>);
+
+constexpr bool test() {
+  // Can call `inner-iterator::operator++`; `View` is a forward range.
+  {
+    SplitViewForward v("abc def", " ");
+    auto val = *v.begin();
+
+    // ++i
+    {
+      auto i = val.begin();
+      assert(*i == 'a');
+
+      decltype(auto) i2 = ++i;
+      static_assert(std::is_lvalue_reference_v<decltype(i2)>);
+      assert(&i2 == &i);
+      assert(*i2 == 'b');
+    }
+
+    // i++
+    {
+      auto i = val.begin();
+      assert(*i == 'a');
+
+      decltype(auto) i2 = i++;
+      static_assert(!std::is_reference_v<decltype(i2)>);
+      assert(*i2 == 'a');
+      assert(*i == 'b');
+    }
+  }
+
+  // Can call `inner-iterator::operator++`; `View` is an input range.
+  {
+    // ++i
+    {
+      SplitViewInput v("abc def", ' ');
+      auto val = *v.begin();
+
+      auto i = val.begin();
+      assert(*i == 'a');
+
+      decltype(auto) i2 = ++i;
+      static_assert(std::is_lvalue_reference_v<decltype(i2)>);
+      assert(&i2 == &i);
+      assert(*i2 == 'b');
+    }
+
+    // i++
+    {
+      SplitViewInput v("abc def", ' ');
+      auto val = *v.begin();
+
+      auto i = val.begin();
+      assert(*i == 'a');
+
+      static_assert(std::is_void_v<decltype(i++)>);
+      i++;
+      assert(*i == 'b');
+    }
+  }
+
+  // Can call `inner-iterator::operator++`; `View` is an input range and `Pattern` is an "empty" range.
+  {
+    // ++i
+    {
+      std::ranges::lazy_split_view<InputView, EmptyView> v("a", EmptyView());
+      auto val = *v.begin();
+
+      auto i = val.begin();
+      assert(*i.base() == 'a');
+      assert(i != std::default_sentinel);
+
+      // The iterator doesn't move to the next character but is considered to point to the end.
+      decltype(auto) i2 = ++i;
+      assert(&i2 == &i);
+      assert(*i2.base() == 'a');
+      assert(i2 == std::default_sentinel);
+    }
+
+    // i++
+    {
+      std::ranges::lazy_split_view<InputView, EmptyView> v("a", EmptyView());
+      auto val = *v.begin();
+
+      auto i = val.begin();
+      assert(*i.base() == 'a');
+      assert(i != std::default_sentinel);
+
+      // The iterator doesn't move to the next character but is considered to point to the end.
+      i++;
+      assert(*i.base() == 'a');
+      assert(i == std::default_sentinel);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/iter_move.pass.cpp
new file mode 100644
index 0000000..3e56719
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/iter_move.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr decltype(auto) iter_move(const inner-iterator& i)
+//   noexcept(noexcept(ranges::iter_move(i.i_.<current>)));
+
+#include <iterator>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "../types.h"
+
+namespace adl {
+
+template <bool IsNoexcept = false>
+struct MaybeNoexceptIterator {
+  using value_type = int;
+  using difference_type = ptrdiff_t;
+
+  value_type* ptr_ = nullptr;
+  int* iter_move_invocations_ = nullptr;
+
+  constexpr MaybeNoexceptIterator() = default;
+  constexpr explicit MaybeNoexceptIterator(int* p, int& iter_moves) : ptr_(p), iter_move_invocations_(&iter_moves) {}
+
+  constexpr value_type& operator*() const { return *ptr_; }
+
+  MaybeNoexceptIterator& operator++() { ++ptr_; return *this; }
+  MaybeNoexceptIterator operator++(int) {
+    MaybeNoexceptIterator prev = *this;
+    ++ptr_;
+    return prev;
+  }
+
+  constexpr MaybeNoexceptIterator& operator--() { --ptr_; return *this; }
+  constexpr MaybeNoexceptIterator operator--(int) {
+    MaybeNoexceptIterator prev = *this;
+    --ptr_;
+    return prev;
+  }
+
+  constexpr friend value_type&& iter_move(MaybeNoexceptIterator iter) noexcept(IsNoexcept) {
+    if (iter.iter_move_invocations_) {
+      ++(*iter.iter_move_invocations_);
+    }
+    return std::move(*iter);
+  }
+
+  friend bool operator==(const MaybeNoexceptIterator& lhs, const MaybeNoexceptIterator& rhs) { return lhs.ptr_ == rhs.ptr_; }
+};
+
+template <bool IsNoexcept = false>
+struct View : std::ranges::view_base {
+  static constexpr int N = 3;
+  int a[N] = {0, 1, 2};
+  int* iter_moves = nullptr;
+
+  constexpr View() = default;
+  constexpr View(int& iter_move_invocations) : iter_moves(&iter_move_invocations) {
+  }
+
+  constexpr adl::MaybeNoexceptIterator<IsNoexcept> begin() {
+    return adl::MaybeNoexceptIterator<IsNoexcept>(a, *iter_moves);
+  }
+  constexpr adl::MaybeNoexceptIterator<IsNoexcept> end() {
+    return adl::MaybeNoexceptIterator<IsNoexcept>(a + N, *iter_moves);
+  }
+};
+
+} // namespace adl
+
+constexpr bool test() {
+  // Can use `iter_move` with `inner-iterator`; `View` is a forward range.
+  {
+    SplitViewForward v("abc def", " ");
+    auto segment = *v.begin();
+
+    // Non-const iterator.
+    {
+      auto i = segment.begin();
+      static_assert(std::same_as<decltype(iter_move(i)), const char &&>);
+      assert(iter_move(i) == 'a');
+    }
+
+    // Const iterator.
+    {
+      const auto i = segment.begin();
+      static_assert(std::same_as<decltype(iter_move(i)), const char &&>);
+      assert(iter_move(i) == 'a');
+    }
+  }
+
+  // Can use `iter_move` with `inner-iterator`, `View` is an input range.
+  {
+    SplitViewInput v("abc def", ' ');
+    auto segment = *v.begin();
+
+    // Non-const iterator.
+    {
+      auto i = segment.begin();
+      static_assert(std::same_as<decltype(iter_move(i)), char &&>);
+      assert(iter_move(i) == 'a');
+    }
+
+    // Const iterator.
+    {
+      const auto i = segment.begin();
+      static_assert(std::same_as<decltype(iter_move(i)), char &&>);
+      assert(iter_move(i) == 'a');
+    }
+  }
+
+  // Ensure the `iter_move` customization point is being used.
+  {
+    int iter_move_invocations = 0;
+    adl::View<> input(iter_move_invocations);
+    std::ranges::lazy_split_view<adl::View<>, adl::View<>> v(input, adl::View<>());
+
+    auto segment = *v.begin();
+    auto i = segment.begin();
+    int x = iter_move(i);
+    assert(x == 0);
+    assert(iter_move_invocations == 1);
+  }
+
+  // Check the `noexcept` specification.
+  {
+    {
+      using ThrowingSplitView = std::ranges::lazy_split_view<adl::View<false>, adl::View<false>>;
+      using ThrowingValueType = std::ranges::iterator_t<ThrowingSplitView>::value_type;
+      using ThrowingIter = std::ranges::iterator_t<ThrowingValueType>;
+      ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(std::declval<adl::MaybeNoexceptIterator<false>>()));
+      ASSERT_NOT_NOEXCEPT(iter_move(std::declval<ThrowingIter>()));
+    }
+
+    {
+      using NoexceptSplitView = std::ranges::lazy_split_view<adl::View<true>, adl::View<true>>;
+      using NoexceptValueType = std::ranges::iterator_t<NoexceptSplitView>::value_type;
+      using NoexceptIter = std::ranges::iterator_t<NoexceptValueType>;
+      ASSERT_NOEXCEPT(std::ranges::iter_move(std::declval<adl::MaybeNoexceptIterator<true>>()));
+      ASSERT_NOEXCEPT(iter_move(std::declval<NoexceptIter>()));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/iter_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/iter_swap.pass.cpp
new file mode 100644
index 0000000..7d0e8a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/iter_swap.pass.cpp
@@ -0,0 +1,222 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr void iter_swap(const inner-iterator& x, const inner-iterator& y)
+//   noexcept(noexcept(ranges::iter_swap(x.i_.<current>, y.i_.<current>)))
+//   requires indirectly_swappable<iterator_t<Base>>;
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include "../types.h"
+
+namespace adl {
+
+template <bool IsNoexcept = false>
+struct MaybeNoexceptIterator {
+  using value_type = int;
+  using difference_type = ptrdiff_t;
+
+  value_type* ptr_ = nullptr;
+  int* iter_swap_invocations_ = nullptr;
+
+  constexpr MaybeNoexceptIterator() = default;
+  constexpr explicit MaybeNoexceptIterator(int& iter_swaps) : iter_swap_invocations_(&iter_swaps) {}
+
+  value_type& operator*() const { return *ptr_; }
+
+  MaybeNoexceptIterator& operator++() { ++ptr_; return *this; }
+  MaybeNoexceptIterator operator++(int) {
+    MaybeNoexceptIterator prev = *this;
+    ++ptr_;
+    return prev;
+  }
+
+  MaybeNoexceptIterator& operator--() { --ptr_; return *this; }
+  MaybeNoexceptIterator operator--(int) {
+    MaybeNoexceptIterator prev = *this;
+    --ptr_;
+    return prev;
+  }
+
+  constexpr friend void iter_swap(MaybeNoexceptIterator a, MaybeNoexceptIterator) noexcept(IsNoexcept) {
+    if (a.iter_swap_invocations_) {
+      ++(*a.iter_swap_invocations_);
+    }
+  }
+
+  friend bool operator==(const MaybeNoexceptIterator& lhs, const MaybeNoexceptIterator& rhs) {
+    return lhs.ptr_ == rhs.ptr_;
+  }
+};
+
+template <bool IsNoexcept = false>
+struct View : std::ranges::view_base {
+  int* iter_swaps = nullptr;
+
+  constexpr View() = default;
+  constexpr View(int& iter_swap_invocations) : iter_swaps(&iter_swap_invocations) {
+  }
+
+  constexpr adl::MaybeNoexceptIterator<IsNoexcept> begin() {
+    return adl::MaybeNoexceptIterator<IsNoexcept>(*iter_swaps);
+  }
+  constexpr adl::MaybeNoexceptIterator<IsNoexcept> end() {
+    return adl::MaybeNoexceptIterator<IsNoexcept>(*iter_swaps);
+  }
+};
+
+} // namespace adl
+
+constexpr bool test() {
+  // Can use `iter_swap` with `inner-iterator`; `View` is a forward range.
+  {
+    // Non-const iterator.
+    {
+      SplitViewDiff v("abc def", " ");
+      auto segment = *v.begin();
+
+      auto i1 = segment.begin();
+      auto i2 = i1++;
+      static_assert(std::is_void_v<decltype(iter_swap(i1, i2))>);
+      assert(*i1 == 'b');
+      assert(*i2 == 'a');
+
+      iter_swap(i1, i2);
+      assert(*i1 == 'a');
+      assert(*i2 == 'b');
+      // Note that `iter_swap` swaps characters in the actual underlying range.
+      assert(*v.base().begin() == 'b');
+    }
+
+    // Const iterator.
+    {
+      SplitViewDiff v("abc def", " ");
+      auto segment = *v.begin();
+
+      auto i1 = segment.begin();
+      const auto i2 = i1++;
+      static_assert(std::is_void_v<decltype(iter_swap(i1, i2))>);
+      static_assert(std::is_void_v<decltype(iter_swap(i2, i2))>);
+      assert(*i1 == 'b');
+      assert(*i2 == 'a');
+
+      iter_swap(i1, i2);
+      assert(*i1 == 'a');
+      assert(*i2 == 'b');
+      assert(*v.base().begin() == 'b');
+    }
+  }
+
+  // Can use `iter_swap` with `inner-iterator`; `View` is an input range.
+  {
+
+    // Non-const iterator.
+    {
+      // Iterators belong to the same view.
+      {
+        SplitViewInput v("abc def", ' ');
+        auto segment = *v.begin();
+
+        auto i1 = segment.begin();
+        auto i2 = i1;
+        ++i1;
+        static_assert(std::is_void_v<decltype(iter_swap(i1, i2))>);
+        assert(*i1 == 'b');
+        // For an input view, all inner iterators are essentially thin proxies to the same underlying iterator.
+        assert(*i2 == 'b');
+
+        iter_swap(i1, i2);
+        assert(*i1 == 'b');
+        assert(*i2 == 'b');
+      }
+
+      // Iterators belong to different views.
+      {
+        SplitViewInput v1("abc def", ' ');
+        auto val1 = *v1.begin();
+        SplitViewInput v2 = v1;
+        auto val2 = *v2.begin();
+
+        auto i1 = val1.begin();
+        auto i2 = val2.begin();
+        ++i1;
+        assert(*i1 == 'b');
+        assert(*i2 == 'a');
+
+        iter_swap(i1, i2);
+        assert(*i1 == 'a');
+        assert(*i2 == 'b');
+      }
+    }
+
+    // Const iterator.
+    {
+      SplitViewInput v("abc def", ' ');
+      auto segment = *v.begin();
+
+      const auto i1 = segment.begin();
+      const auto i2 = i1;
+      static_assert(std::is_void_v<decltype(iter_swap(i1, i2))>);
+      assert(*i1 == 'a');
+      assert(*i2 == 'a');
+
+      iter_swap(i1, i2);
+      assert(*i1 == 'a');
+      assert(*i2 == 'a');
+    }
+  }
+
+  // Ensure the `iter_swap` customization point is being used.
+  {
+    int iter_swap_invocations = 0;
+    adl::View<> input(iter_swap_invocations);
+    std::ranges::lazy_split_view<adl::View<>, adl::View<>> v(input, adl::View<>());
+
+    auto segment = *v.begin();
+    auto i = segment.begin();
+    iter_swap(i, i);
+    assert(iter_swap_invocations == 1);
+  }
+
+  // Check the `noexcept` specification.
+  {
+    {
+      using ThrowingSplitView = std::ranges::lazy_split_view<adl::View<false>, adl::View<false>>;
+      using ThrowingValueType = std::ranges::iterator_t<ThrowingSplitView>::value_type;
+      using ThrowingIter = std::ranges::iterator_t<ThrowingValueType>;
+      ASSERT_NOT_NOEXCEPT(std::ranges::iter_swap(
+          std::declval<adl::MaybeNoexceptIterator<false>>(),
+          std::declval<adl::MaybeNoexceptIterator<false>>()));
+      ASSERT_NOT_NOEXCEPT(iter_swap(std::declval<ThrowingIter>(), std::declval<ThrowingIter>()));
+    }
+
+    {
+      using NoexceptSplitView = std::ranges::lazy_split_view<adl::View<true>, adl::View<true>>;
+      using NoexceptValueType = std::ranges::iterator_t<NoexceptSplitView>::value_type;
+      using NoexceptIter = std::ranges::iterator_t<NoexceptValueType>;
+      ASSERT_NOEXCEPT(std::ranges::iter_swap(
+          std::declval<adl::MaybeNoexceptIterator<true>>(),
+          std::declval<adl::MaybeNoexceptIterator<true>>()));
+      ASSERT_NOEXCEPT(iter_swap(std::declval<NoexceptIter>(), std::declval<NoexceptIter>()));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/types.compile.pass.cpp
new file mode 100644
index 0000000..0fea5b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.inner/types.compile.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  using iterator_category = If<
+//    derived_from<typename iterator_traits<iterator_t<Base>>::iterator_category, forward_iterator_tag>,
+//    forward_iterator_tag,
+//    typename iterator_traits<iterator_t<Base>>::iterator_category
+//  >;
+//  using iterator_concept = typename outer-iterator<Const>::iterator_concept;
+//  using value_type = range_value_t<Base>;
+//  using difference_type = range_difference_t<Base>;
+
+#include <ranges>
+
+#include <concepts>
+#include <iterator>
+#include "../types.h"
+
+template <class Range, class Pattern>
+using OuterIter = std::ranges::iterator_t<std::ranges::lazy_split_view<Range, Pattern>>;
+template <class Range, class Pattern>
+using InnerIter = std::ranges::iterator_t<decltype(*OuterIter<Range, Pattern>())>;
+
+// iterator_concept
+
+static_assert(std::same_as<typename InnerIter<ForwardView, ForwardView>::iterator_concept,
+    typename OuterIter<ForwardView, ForwardView>::iterator_concept>);
+static_assert(std::same_as<typename InnerIter<InputView, ForwardTinyView>::iterator_concept,
+    typename OuterIter<InputView, ForwardTinyView>::iterator_concept>);
+
+// iterator_category
+
+static_assert(std::same_as<typename InnerIter<ForwardView, ForwardView>::iterator_category, std::forward_iterator_tag>);
+
+template <class Range, class Pattern>
+concept NoIteratorCategory = !requires { typename InnerIter<Range, Pattern>::iterator_category; };
+static_assert(NoIteratorCategory<InputView, ForwardTinyView>);
+
+// value_type
+
+static_assert(std::same_as<typename InnerIter<ForwardView, ForwardView>::value_type,
+    std::ranges::range_value_t<ForwardView>>);
+
+// difference_type
+
+static_assert(std::same_as<typename InnerIter<ForwardView, ForwardView>::difference_type,
+    std::ranges::range_difference_t<ForwardView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/begin.pass.cpp
new file mode 100644
index 0000000..fbcbf8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/begin.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::lazy_split_view::outer-iterator::value_type::begin()
+
+#include <ranges>
+
+#include <cassert>
+#include "../types.h"
+
+constexpr bool test() {
+  // `View` is a forward range.
+  {
+    CopyableView input("a");
+
+    // Non-const.
+    {
+      SplitViewCopyable v(input, "b");
+      auto val = *v.begin();
+      assert(val.begin().base() == input.begin());
+    }
+
+    // Const.
+    {
+      SplitViewCopyable v(input, "b");
+      const auto val = *v.begin();
+      assert(val.begin().base() == input.begin());
+    }
+  }
+
+  // `View` is an input range.
+  {
+    InputView input("a");
+
+    // Non-const.
+    {
+      SplitViewInput v(input, 'b');
+      auto val = *v.begin();
+      // Copies of `InputView` are independent and the iterators won't compare the same.
+      assert(*val.begin().base() == *input.begin());
+    }
+
+    // Const.
+    {
+      SplitViewInput v(input, 'b');
+      const auto val = *v.begin();
+      // Copies of `InputView` are independent and the iterators won't compare the same.
+      assert(*val.begin().base() == *input.begin());
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/ctor.default.pass.cpp
new file mode 100644
index 0000000..f92ea01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/ctor.default.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::lazy_split_view::outer-iterator::value_type::value_type()
+
+#include <ranges>
+
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    [[maybe_unused]] ValueTypeForward val;
+  }
+
+  {
+    [[maybe_unused]] ValueTypeForward val = {};
+  }
+
+  {
+    [[maybe_unused]] ValueTypeInput val;
+  }
+
+  {
+    [[maybe_unused]] ValueTypeInput val = {};
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/ctor.iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/ctor.iter.pass.cpp
new file mode 100644
index 0000000..f533c1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/ctor.iter.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// explicit outer-iterator::value_type::value_type(outer-iterator i)
+
+#include <ranges>
+
+#include <cassert>
+#include "../types.h"
+
+// Verify that the constructor is `explicit`.
+static_assert(!std::is_convertible_v<OuterIterForward, ValueTypeForward>);
+static_assert(!std::is_convertible_v<OuterIterInput, ValueTypeInput>);
+
+constexpr bool test() {
+  // `View` is a forward range.
+  {
+    CopyableView input = "a";
+    SplitViewCopyable v(input, "b");
+    ValueTypeCopyable val(v.begin());
+    assert(val.begin().base() == input.begin());
+  }
+
+  // `View` is an input range.
+  {
+    InputView input = "a";
+    SplitViewInput v(input, 'b');
+    ValueTypeInput val(v.begin());
+    assert(*val.begin().base() == *input.begin());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/end.pass.cpp
new file mode 100644
index 0000000..e269312
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/end.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::lazy_split_view::outer-iterator::value_type::end()
+
+#include <ranges>
+
+#include <cassert>
+#include "../types.h"
+
+constexpr bool test() {
+  // `View` is a forward range.
+  {
+    CopyableView input("a");
+
+    // Non-const.
+    {
+      SplitViewCopyable v(input, "b");
+      auto val = *v.begin();
+
+      static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);
+      static_assert(noexcept(val.end()));
+      [[maybe_unused]] auto e = val.end();
+    }
+
+    // Const.
+    {
+      SplitViewCopyable v(input, "b");
+      const auto val = *v.begin();
+
+      static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);
+      static_assert(noexcept(val.end()));
+      [[maybe_unused]] auto e = val.end();
+    }
+  }
+
+  // `View` is an input range.
+  {
+    InputView input("a");
+
+    // Non-const.
+    {
+      SplitViewInput v(input, 'b');
+      auto val = *v.begin();
+
+      static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);
+      static_assert(noexcept(val.end()));
+      [[maybe_unused]] auto e = val.end();
+    }
+
+    // Const.
+    {
+      SplitViewInput v(input, 'b');
+      const auto val = *v.begin();
+
+      static_assert(std::same_as<decltype(val.end()), std::default_sentinel_t>);
+      static_assert(noexcept(val.end()));
+      [[maybe_unused]] auto e = val.end();
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/view_interface.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/view_interface.pass.cpp
new file mode 100644
index 0000000..928b20d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer.value/view_interface.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::lazy_split_view::outer-iterator::value_type;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include "../types.h"
+
+using V = ValueTypeForward;
+static_assert(std::ranges::forward_range<V>);
+static_assert(std::ranges::view<V>);
+
+static_assert(std::is_base_of_v<std::ranges::view_interface<ValueTypeForward>, ValueTypeForward>);
+
+constexpr bool test() {
+  // empty()
+  {
+    {
+      SplitViewForward v("abc def", " ");
+      auto val = *v.begin();
+      assert(!val.empty());
+    }
+
+    {
+      SplitViewForward v;
+      auto val = *v.begin();
+      assert(val.empty());
+    }
+  }
+
+  // operator bool()
+  {
+    {
+      SplitViewForward v("abc def", " ");
+      auto val = *v.begin();
+      assert(val);
+    }
+
+    {
+      SplitViewForward v;
+      auto val = *v.begin();
+      assert(!val);
+    }
+  }
+
+  // front()
+  {
+    SplitViewForward v("abc def", " ");
+    auto val = *v.begin();
+    assert(val.front() == 'a');
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.copy.pass.cpp
new file mode 100644
index 0000000..a4f8791
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.copy.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr outer-iterator(outer-iterator<!Const> i)
+//   requires Const && convertible_to<iterator_t<View>, iterator_t<Base>>
+
+#include <ranges>
+
+#include <string_view>
+#include <type_traits>
+#include <utility>
+#include "../types.h"
+
+// outer-iterator<Const = true>
+
+template <class Iter>
+concept IsConstOuterIter = requires (Iter i) {
+  { *(*i).begin() } -> std::same_as<const char&>;
+};
+static_assert( IsConstOuterIter<OuterIterConst>);
+
+static_assert( std::convertible_to<
+    std::ranges::iterator_t<SplitViewDiff>, std::ranges::iterator_t<const SplitViewDiff>>);
+
+// outer-iterator<Const = false>
+
+template <class Iter>
+concept IsNonConstOuterIter = requires (Iter i) {
+  { *(*i).begin() } -> std::same_as<char&>;
+};
+static_assert( IsNonConstOuterIter<OuterIterNonConst>);
+
+static_assert(!std::is_constructible_v<OuterIterNonConst, OuterIterConst>);
+
+constexpr bool test() {
+  [[maybe_unused]] OuterIterConst i(OuterIterNonConst{});
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.default.pass.cpp
new file mode 100644
index 0000000..5a11275
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.default.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::lazy_split_view::outer-iterator::outer-iterator()
+
+#include <ranges>
+
+#include "../types.h"
+
+constexpr bool test() {
+  // `View` is a forward range.
+  {
+    [[maybe_unused]] OuterIterForward i;
+  }
+
+  {
+    [[maybe_unused]] OuterIterForward i = {};
+  }
+
+  // `View` is an input range.
+  {
+    [[maybe_unused]] OuterIterInput i;
+  }
+
+  {
+    [[maybe_unused]] OuterIterInput i = {};
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.parent.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.parent.pass.cpp
new file mode 100644
index 0000000..aacf6ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.parent.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// explicit std::ranges::lazy_split_view::outer-iterator::outer-iterator(Parent& parent)
+//   requires (!forward_range<Base>)
+
+#include <ranges>
+
+#include <type_traits>
+#include <utility>
+#include "../types.h"
+
+// Verify that the constructor is `explicit`.
+static_assert(!std::is_convertible_v<SplitViewInput&, OuterIterInput>);
+
+static_assert( std::ranges::forward_range<SplitViewForward>);
+static_assert(!std::is_constructible_v<OuterIterForward, SplitViewForward&>);
+
+constexpr bool test() {
+  InputView input;
+  SplitViewInput v(input, ForwardTinyView());
+  [[maybe_unused]] OuterIterInput i(v);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.parent_base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.parent_base.pass.cpp
new file mode 100644
index 0000000..9fc0ce3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/ctor.parent_base.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr outer-iterator(Parent& parent, iterator_t<Base> current);
+//   requires forward_range<Base>
+
+#include <ranges>
+
+#include <type_traits>
+#include <utility>
+#include "../types.h"
+
+static_assert(!std::ranges::forward_range<SplitViewInput>);
+static_assert(!std::is_constructible_v<OuterIterInput, SplitViewInput&, std::ranges::iterator_t<InputView>>);
+
+constexpr bool test() {
+  ForwardView input("abc");
+  SplitViewForward v(std::move(input), " ");
+  [[maybe_unused]] OuterIterForward i(v, input.begin());
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/deref.pass.cpp
new file mode 100644
index 0000000..aa1edd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/deref.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr outer-iterator::value-type outer-iterator::operator*() const;
+
+#include <ranges>
+
+#include <algorithm>
+#include <cassert>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include "../types.h"
+
+template <class View, class Separator>
+constexpr void test_one(Separator sep) {
+  using namespace std::string_literals;
+  using namespace std::string_view_literals;
+
+  View v("abc def ghi"sv, sep);
+
+  // Non-const iterator.
+  {
+    auto i = v.begin();
+    static_assert(!std::is_reference_v<decltype(*i)>);
+    assert(std::ranges::equal(*i, "abc"s));
+    assert(std::ranges::equal(*(++i), "def"s));
+    assert(std::ranges::equal(*(++i), "ghi"s));
+  }
+
+  // Const iterator.
+  {
+    const auto ci = v.begin();
+    static_assert(!std::is_reference_v<decltype(*ci)>);
+    assert(std::ranges::equal(*ci, "abc"s));
+  }
+}
+
+constexpr bool test() {
+  // `View` is a forward range.
+  test_one<SplitViewDiff>(" ");
+  test_one<SplitViewInput>(' ');
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/equal.pass.cpp
new file mode 100644
index 0000000..49cac70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/equal.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const outer-iterator& x, const outer-iterator& y)
+//   requires forward_range<Base>;
+//
+// friend constexpr bool operator==(const outer-iterator& x, default_sentinel_t);
+
+#include <ranges>
+
+#include <concepts>
+#include <string_view>
+#include "../types.h"
+
+template <class Iter>
+concept CanCallEquals = requires(const Iter& i) {
+  i == i;
+  i != i;
+};
+
+constexpr bool test() {
+  // Forward range supports both overloads of `operator==`.
+  {
+    // outer-iterator == outer-iterator
+    {
+      SplitViewForward v("abc def", " ");
+      auto b = v.begin(), e = v.end();
+
+      assert(b == b);
+      assert(!(b != b));
+
+      assert(e == e);
+      assert(!(e != e));
+
+      assert(!(b == e));
+      assert(b != e);
+    }
+
+    // outer-iterator == default_sentinel
+    {
+      SplitViewForward v("abc def", " ");
+      auto b = v.begin(), e = v.end();
+
+      assert(!(b == std::default_sentinel));
+      assert(b != std::default_sentinel);
+      assert(e == std::default_sentinel);
+      assert(!(e != std::default_sentinel));
+    }
+
+      // Default-constructed `outer-iterator`s compare equal.
+      {
+        OuterIterForward i1, i2;
+        assert(i1 == i2);
+        assert(!(i1 != i2));
+      }
+  }
+
+  // Input range only supports comparing an `outer-iterator` to the default sentinel.
+  {
+    using namespace std::string_view_literals;
+    SplitViewInput v("abc def"sv, ' ');
+    auto b = v.begin();
+    std::same_as<std::default_sentinel_t> decltype(auto) e = v.end();
+
+    static_assert(!CanCallEquals<decltype(b)>);
+
+    assert(!(b == std::default_sentinel));
+    assert(b != std::default_sentinel);
+    assert(!(b == e));
+    assert(b != e);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/increment.pass.cpp
new file mode 100644
index 0000000..4d765d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/increment.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr outer-iterator& outer-iterator::operator++();
+// constexpr decltype(auto) outer-iterator::operator++(int);
+
+// Note that corner cases are tested in `range.lazy.split/general.pass.cpp`.
+
+#include <ranges>
+
+#include <algorithm>
+#include <cassert>
+#include <string>
+#include "../types.h"
+
+constexpr bool test() {
+  using namespace std::string_literals;
+  // Can call `outer-iterator::operator++`; `View` is a forward range.
+  {
+    SplitViewForward v("abc def ghi", " ");
+
+    // ++i
+    {
+      auto i = v.begin();
+      assert(std::ranges::equal(*i, "abc"s));
+
+      decltype(auto) i2 = ++i;
+      static_assert(std::is_lvalue_reference_v<decltype(i2)>);
+      assert(&i2 == &i);
+      assert(std::ranges::equal(*i2, "def"s));
+    }
+
+    // i++
+    {
+      auto i = v.begin();
+      assert(std::ranges::equal(*i, "abc"s));
+
+      decltype(auto) i2 = i++;
+      static_assert(!std::is_reference_v<decltype(i2)>);
+      assert(std::ranges::equal(*i2, "abc"s));
+      assert(std::ranges::equal(*i, "def"s));
+    }
+  }
+
+  // Can call `outer-iterator::operator++`; `View` is an input range.
+  {
+    SplitViewInput v("abc def ghi", ' ');
+
+    // ++i
+    {
+      auto i = v.begin();
+      assert(std::ranges::equal(*i, "abc"s));
+
+      decltype(auto) i2 = ++i;
+      static_assert(std::is_lvalue_reference_v<decltype(i2)>);
+      assert(&i2 == &i);
+      assert(std::ranges::equal(*i2, "def"s));
+    }
+
+    // i++
+    {
+      auto i = v.begin();
+      assert(std::ranges::equal(*i, "abc"s));
+
+      static_assert(std::is_void_v<decltype(i++)>);
+      i++;
+      assert(std::ranges::equal(*i, "def"s));
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/types.compile.pass.cpp
new file mode 100644
index 0000000..768cb5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/range.lazy.split.outer/types.compile.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// using iterator_category = input_iterator_tag; // Only defined if `View` is a forward range.
+// using iterator_concept = conditional_t<forward_range<Base>, forward_iterator_tag, input_iterator_tag>;
+// using difference_type = range_difference_t<Base>;
+
+#include <ranges>
+
+#include <concepts>
+#include <iterator>
+#include "../types.h"
+
+template <class Range, class Pattern>
+using OuterIter = decltype(std::declval<std::ranges::lazy_split_view<Range, Pattern>>().begin());
+
+// iterator_category
+
+static_assert(std::same_as<typename OuterIter<ForwardView, ForwardView>::iterator_category, std::input_iterator_tag>);
+
+template <class Range, class Pattern>
+concept NoIteratorCategory = !requires { typename OuterIter<Range, Pattern>::iterator_category; };
+static_assert(NoIteratorCategory<InputView, ForwardTinyView>);
+
+// iterator_concept
+
+static_assert(std::same_as<typename OuterIter<ForwardView, ForwardView>::iterator_concept, std::forward_iterator_tag>);
+static_assert(std::same_as<typename OuterIter<InputView, ForwardTinyView>::iterator_concept, std::input_iterator_tag>);
+
+// difference_type
+
+static_assert(std::same_as<typename OuterIter<ForwardView, ForwardView>::difference_type,
+    std::ranges::range_difference_t<ForwardView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/types.h
new file mode 100644
index 0000000..a606e91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/types.h
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_LAZY_SPLIT_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_LAZY_SPLIT_TYPES_H
+
+#include <concepts>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// CopyableView
+
+struct CopyableView : std::ranges::view_base {
+  std::string_view view_;
+  constexpr explicit CopyableView() = default;
+  constexpr CopyableView(const char* ptr) : view_(ptr) {}
+  constexpr CopyableView(std::string_view v) : view_(v) {}
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(view_.begin()); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(view_.end()); }
+  constexpr bool operator==(const CopyableView& rhs) const { return view_ == rhs.view_; }
+};
+static_assert( std::ranges::forward_range<CopyableView>);
+static_assert( std::ranges::forward_range<const CopyableView>);
+static_assert( std::ranges::view<CopyableView>);
+static_assert( std::is_copy_constructible_v<CopyableView>);
+
+// ForwardView
+
+struct ForwardView : std::ranges::view_base {
+  std::string_view view_;
+  constexpr explicit ForwardView() = default;
+  constexpr ForwardView(const char* ptr) : view_(ptr) {}
+  constexpr ForwardView(std::string_view v) : view_(v) {}
+  constexpr ForwardView(ForwardView&&) = default;
+  constexpr ForwardView& operator=(ForwardView&&) = default;
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(view_.begin()); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(view_.end()); }
+};
+static_assert( std::ranges::forward_range<ForwardView>);
+static_assert( std::ranges::forward_range<const ForwardView>);
+static_assert( std::ranges::view<ForwardView>);
+static_assert(!std::is_copy_constructible_v<ForwardView>);
+static_assert( std::is_move_constructible_v<ForwardView>);
+
+// ForwardDiffView
+
+// Iterator types differ based on constness of this class.
+struct ForwardDiffView : std::ranges::view_base {
+  std::string buffer_;
+  constexpr explicit ForwardDiffView() = default;
+  constexpr ForwardDiffView(const char* ptr) : ForwardDiffView(std::string_view(ptr)) {}
+  constexpr ForwardDiffView(std::string_view v) {
+    // Workaround https://github.com/llvm/llvm-project/issues/55867
+    buffer_ = v;
+  }
+  constexpr ForwardDiffView(ForwardDiffView&&) = default;
+  constexpr ForwardDiffView& operator=(ForwardDiffView&&) = default;
+  constexpr ForwardDiffView(const ForwardDiffView&) = default;
+  constexpr ForwardDiffView& operator=(const ForwardDiffView&) = default;
+  constexpr forward_iterator<char*> begin() { return forward_iterator<char*>(buffer_.begin().base()); }
+  constexpr forward_iterator<char*> end()  { return forward_iterator<char*>(buffer_.end().base()); }
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(buffer_.begin().base()); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(buffer_.end().base()); }
+};
+static_assert( std::ranges::forward_range<ForwardView>);
+static_assert( std::ranges::forward_range<const ForwardView>);
+static_assert( std::ranges::view<ForwardView>);
+static_assert(!std::same_as<std::ranges::iterator_t<ForwardDiffView>, std::ranges::iterator_t<const ForwardDiffView>>);
+
+// ForwardOnlyIfNonConstView
+
+template <class It>
+class almost_forward_iterator {
+    It it_;
+
+    template <class U> friend class almost_forward_iterator;
+
+public:
+    using iterator_category = std::forward_iterator_tag;
+    using value_type = typename std::iterator_traits<It>::value_type;
+    using difference_type = typename std::iterator_traits<It>::difference_type;
+    using pointer = It;
+    using reference = typename std::iterator_traits<It>::reference;
+
+    constexpr almost_forward_iterator() : it_() {}
+    constexpr explicit almost_forward_iterator(It it) : it_(it) {}
+    template <class U>
+        constexpr almost_forward_iterator(const almost_forward_iterator<U>& u) : it_(u.it_) {}
+
+    constexpr reference operator*() const { return *it_; }
+    constexpr pointer operator->() const { return it_; }
+
+    constexpr almost_forward_iterator& operator++() { ++it_; return *this; }
+    // Notice the slightly different return type.
+    constexpr const almost_forward_iterator operator++(int) { return almost_forward_iterator(it_); }
+
+    friend constexpr bool operator==(const almost_forward_iterator& x, const almost_forward_iterator& y) {
+      return x.it_ == y.it_;
+    }
+    friend constexpr bool operator!=(const almost_forward_iterator& x, const almost_forward_iterator& y) {
+      return x.it_ != y.it_;
+    }
+};
+static_assert(!std::forward_iterator<almost_forward_iterator<int*>>);
+static_assert( std::input_iterator<almost_forward_iterator<int*>>);
+
+struct ForwardOnlyIfNonConstView : std::ranges::view_base {
+  std::string_view view_;
+
+  constexpr explicit ForwardOnlyIfNonConstView() = default;
+  constexpr ForwardOnlyIfNonConstView(const char* ptr) : view_(ptr) {}
+  constexpr ForwardOnlyIfNonConstView(std::string_view v) : view_(v) {}
+  constexpr ForwardOnlyIfNonConstView(ForwardOnlyIfNonConstView&&) = default;
+  constexpr ForwardOnlyIfNonConstView& operator=(ForwardOnlyIfNonConstView&&) = default;
+
+  constexpr forward_iterator<const char*> begin() { return forward_iterator<const char*>(view_.begin()); }
+  constexpr forward_iterator<const char*> end() { return forward_iterator<const char*>(view_.end()); }
+  constexpr almost_forward_iterator<const char*> begin() const {
+    return almost_forward_iterator<const char*>(view_.begin());
+  }
+  constexpr almost_forward_iterator<const char*> end() const {
+    return almost_forward_iterator<const char*>(view_.end());
+  }
+};
+static_assert( std::ranges::forward_range<ForwardOnlyIfNonConstView>);
+static_assert(!std::ranges::forward_range<const ForwardOnlyIfNonConstView>);
+static_assert( std::ranges::view<ForwardOnlyIfNonConstView>);
+
+// InputView
+
+struct InputView : std::ranges::view_base {
+  std::string buffer_;
+
+  constexpr InputView() = default;
+  constexpr InputView(const char* s) : InputView(std::string_view(s)) {}
+  constexpr InputView(std::string_view v) {
+    // Workaround https://github.com/llvm/llvm-project/issues/55867
+    buffer_ = v;
+  }
+
+  constexpr cpp20_input_iterator<char*> begin() { return cpp20_input_iterator<char*>(buffer_.begin().base()); }
+  constexpr sentinel_wrapper<cpp20_input_iterator<char*>> end() {
+    return sentinel_wrapper(cpp20_input_iterator<char*>(buffer_.end().base()));
+  }
+  constexpr cpp20_input_iterator<const char*> begin() const {
+    return cpp20_input_iterator<const char*>(buffer_.begin().base());
+  }
+  constexpr sentinel_wrapper<cpp20_input_iterator<const char*>> end() const {
+    return sentinel_wrapper(cpp20_input_iterator<const char*>(buffer_.end().base()));
+  }
+  friend constexpr bool operator==(const InputView& lhs, const InputView& rhs) {
+    return lhs.buffer_ == rhs.buffer_;
+  }
+};
+
+static_assert(std::ranges::input_range<InputView>);
+static_assert(std::ranges::input_range<const InputView>);
+static_assert(std::ranges::view<InputView>);
+
+// ForwardTinyView
+
+struct ForwardTinyView : std::ranges::view_base {
+  char c_[1] = {};
+  constexpr ForwardTinyView() = default;
+  constexpr ForwardTinyView(char c) { *c_ = c; }
+  constexpr forward_iterator<const char*> begin() const { return forward_iterator<const char*>(c_); }
+  constexpr forward_iterator<const char*> end() const { return forward_iterator<const char*>(c_ + 1); }
+  constexpr static size_t size() { return 1; }
+};
+static_assert(std::ranges::forward_range<ForwardTinyView>);
+static_assert(std::ranges::view<ForwardTinyView>);
+LIBCPP_STATIC_ASSERT(std::ranges::__tiny_range<ForwardTinyView>);
+
+// Aliases
+
+using SplitViewCopyable = std::ranges::lazy_split_view<CopyableView, CopyableView>;
+using OuterIterCopyable = std::ranges::iterator_t<SplitViewCopyable>;
+using ValueTypeCopyable = OuterIterCopyable::value_type;
+using InnerIterCopyable = std::ranges::iterator_t<ValueTypeCopyable>;
+using BaseIterCopyable = std::ranges::iterator_t<CopyableView>;
+
+using SplitViewForward = std::ranges::lazy_split_view<ForwardView, ForwardView>;
+using OuterIterForward = std::ranges::iterator_t<SplitViewForward>;
+using ValueTypeForward = OuterIterForward::value_type;
+using InnerIterForward = std::ranges::iterator_t<ValueTypeForward>;
+using BaseIterForward = std::ranges::iterator_t<ForwardView>;
+
+using SplitViewInput = std::ranges::lazy_split_view<InputView, ForwardTinyView>;
+using OuterIterInput = std::ranges::iterator_t<SplitViewInput>;
+using ValueTypeInput = OuterIterInput::value_type;
+using InnerIterInput = std::ranges::iterator_t<ValueTypeInput>;
+using BaseIterInput = std::ranges::iterator_t<InputView>;
+
+using SplitViewDiff = std::ranges::lazy_split_view<ForwardDiffView, ForwardDiffView>;
+using OuterIterConst = decltype(std::declval<const SplitViewDiff>().begin());
+using OuterIterNonConst = decltype(std::declval<SplitViewDiff>().begin());
+static_assert(!std::same_as<OuterIterConst, OuterIterNonConst>);
+using InnerIterConst = decltype((*std::declval<OuterIterConst>()).begin());
+using InnerIterNonConst = decltype((*std::declval<OuterIterNonConst>()).begin());
+static_assert(!std::same_as<InnerIterConst, InnerIterNonConst>);
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_LAZY_SPLIT_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/view_interface.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/view_interface.pass.cpp
new file mode 100644
index 0000000..8d5982d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.lazy.split/view_interface.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::lazy_split_view;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <string_view>
+#include <type_traits>
+#include "types.h"
+
+using V = SplitViewForward;
+
+static_assert(std::is_base_of_v<std::ranges::view_interface<SplitViewForward>, SplitViewForward>);
+
+constexpr bool test() {
+  using namespace std::string_view_literals;
+
+  // empty()
+  {
+    {
+      std::ranges::lazy_split_view v("abc def", " ");
+      assert(!v.empty());
+    }
+
+    {
+      // Note: an empty string literal would still produce a non-empty output because the terminating zero is treated as
+      // a separate character; hence the use of `string_view`.
+      std::ranges::lazy_split_view v(""sv, "");
+      assert(v.empty());
+    }
+  }
+
+  // operator bool()
+  {
+    {
+      std::ranges::lazy_split_view v("abc", "");
+      assert(v);
+    }
+
+    {
+      // Note: an empty string literal would still produce a non-empty output because the terminating zero is treated as
+      // a separate character; hence the use of `string_view`.
+      std::ranges::lazy_split_view v(""sv, "");
+      assert(!v);
+    }
+  }
+
+  // front()
+  {
+    SplitViewForward v("abc", "");
+    assert(*(v.front()).begin() == 'a');
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/adaptor.pass.cpp
new file mode 100644
index 0000000..5e0a0a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/adaptor.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::reverse
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <iterator>
+#include <utility>
+
+#include "types.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+constexpr bool test() {
+  int buf[] = {1, 2, 3};
+
+  // views::reverse(x) is equivalent to x.base() if x is a reverse_view
+  {
+    {
+      BidirRange view(buf, buf + 3);
+      std::ranges::reverse_view<BidirRange> reversed(view);
+      std::same_as<BidirRange> auto result = std::views::reverse(reversed);
+      assert(result.begin_ == buf);
+      assert(result.end_ == buf + 3);
+    }
+    {
+      // Common use case is worth testing
+      BidirRange view(buf, buf + 3);
+      std::same_as<BidirRange> auto result = std::views::reverse(std::views::reverse(view));
+      assert(result.begin_ == buf);
+      assert(result.end_ == buf + 3);
+    }
+  }
+
+  // views::reverse(x) is equivalent to subrange{end, begin, size} if x is a
+  // sized subrange over reverse iterators
+  {
+    using It = bidirectional_iterator<int*>;
+    using Subrange = std::ranges::subrange<It, It, std::ranges::subrange_kind::sized>;
+
+    using ReverseIt = std::reverse_iterator<It>;
+    using ReverseSubrange = std::ranges::subrange<ReverseIt, ReverseIt, std::ranges::subrange_kind::sized>;
+
+    {
+      BidirRange view(buf, buf + 3);
+      ReverseSubrange subrange(ReverseIt(std::ranges::end(view)), ReverseIt(std::ranges::begin(view)), /* size */3);
+      std::same_as<Subrange> auto result = std::views::reverse(subrange);
+      assert(base(result.begin()) == buf);
+      assert(base(result.end()) == buf + 3);
+    }
+    {
+      // std::move into views::reverse
+      BidirRange view(buf, buf + 3);
+      ReverseSubrange subrange(ReverseIt(std::ranges::end(view)), ReverseIt(std::ranges::begin(view)), /* size */3);
+      std::same_as<Subrange> auto result = std::views::reverse(std::move(subrange));
+      assert(base(result.begin()) == buf);
+      assert(base(result.end()) == buf + 3);
+    }
+    {
+      // with a const subrange
+      BidirRange view(buf, buf + 3);
+      ReverseSubrange const subrange(ReverseIt(std::ranges::end(view)), ReverseIt(std::ranges::begin(view)), /* size */3);
+      std::same_as<Subrange> auto result = std::views::reverse(subrange);
+      assert(base(result.begin()) == buf);
+      assert(base(result.end()) == buf + 3);
+    }
+  }
+
+  // views::reverse(x) is equivalent to subrange{end, begin} if x is an
+  // unsized subrange over reverse iterators
+  {
+    using It = bidirectional_iterator<int*>;
+    using Subrange = std::ranges::subrange<It, It, std::ranges::subrange_kind::unsized>;
+
+    using ReverseIt = std::reverse_iterator<It>;
+    using ReverseSubrange = std::ranges::subrange<ReverseIt, ReverseIt, std::ranges::subrange_kind::unsized>;
+
+    {
+      BidirRange view(buf, buf + 3);
+      ReverseSubrange subrange(ReverseIt(std::ranges::end(view)), ReverseIt(std::ranges::begin(view)));
+      std::same_as<Subrange> auto result = std::views::reverse(subrange);
+      assert(base(result.begin()) == buf);
+      assert(base(result.end()) == buf + 3);
+    }
+    {
+      // std::move into views::reverse
+      BidirRange view(buf, buf + 3);
+      ReverseSubrange subrange(ReverseIt(std::ranges::end(view)), ReverseIt(std::ranges::begin(view)));
+      std::same_as<Subrange> auto result = std::views::reverse(std::move(subrange));
+      assert(base(result.begin()) == buf);
+      assert(base(result.end()) == buf + 3);
+    }
+    {
+      // with a const subrange
+      BidirRange view(buf, buf + 3);
+      ReverseSubrange const subrange(ReverseIt(std::ranges::end(view)), ReverseIt(std::ranges::begin(view)));
+      std::same_as<Subrange> auto result = std::views::reverse(subrange);
+      assert(base(result.begin()) == buf);
+      assert(base(result.end()) == buf + 3);
+    }
+  }
+
+  // Otherwise, views::reverse(x) is equivalent to ranges::reverse_view{x}
+  {
+    BidirRange view(buf, buf + 3);
+    std::same_as<std::ranges::reverse_view<BidirRange>> auto result = std::views::reverse(view);
+    assert(base(result.begin().base()) == buf + 3);
+    assert(base(result.end().base()) == buf);
+  }
+
+  // Test that std::views::reverse is a range adaptor
+  {
+    // Test `v | views::reverse`
+    {
+      BidirRange view(buf, buf + 3);
+      std::same_as<std::ranges::reverse_view<BidirRange>> auto result = view | std::views::reverse;
+      assert(base(result.begin().base()) == buf + 3);
+      assert(base(result.end().base()) == buf);
+    }
+
+    // Test `adaptor | views::reverse`
+    {
+      BidirRange view(buf, buf + 3);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::transform(f) | std::views::reverse;
+      using Result = std::ranges::reverse_view<std::ranges::transform_view<BidirRange, decltype(f)>>;
+      std::same_as<Result> auto result = partial(view);
+      assert(base(result.begin().base().base()) == buf + 3);
+      assert(base(result.end().base().base()) == buf);
+    }
+
+    // Test `views::reverse | adaptor`
+    {
+      BidirRange view(buf, buf + 3);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::reverse | std::views::transform(f);
+      using Result = std::ranges::transform_view<std::ranges::reverse_view<BidirRange>, decltype(f)>;
+      std::same_as<Result> auto result = partial(view);
+      assert(base(result.begin().base().base()) == buf + 3);
+      assert(base(result.end().base().base()) == buf);
+    }
+
+    // Check SFINAE friendliness
+    {
+      struct NotABidirRange { };
+      static_assert(!std::is_invocable_v<decltype(std::views::reverse)>);
+      static_assert(!std::is_invocable_v<decltype(std::views::reverse), NotABidirRange>);
+      static_assert( CanBePiped<BidirRange,     decltype(std::views::reverse)>);
+      static_assert( CanBePiped<BidirRange&,    decltype(std::views::reverse)>);
+      static_assert(!CanBePiped<NotABidirRange, decltype(std::views::reverse)>);
+    }
+  }
+
+  {
+    static_assert(std::same_as<decltype(std::views::reverse), decltype(std::ranges::views::reverse)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/base.pass.cpp
new file mode 100644
index 0000000..e442ece
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/base.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const& requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+#include "types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Test common ranges.
+  {
+    // Test non-const.
+    {
+      auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
+
+      std::same_as<BidirRange> auto base = rev.base();
+      assert(base.begin_ == buffer);
+      assert(base.end_ == buffer + 8);
+
+      std::same_as<BidirRange> auto moved = std::move(rev).base();
+      assert(moved.begin_ == buffer);
+      assert(moved.end_ == buffer + 8);
+    }
+    // Test const.
+    {
+      const auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
+
+      std::same_as<BidirRange> auto base = rev.base();
+      assert(base.begin_ == buffer);
+      assert(base.end_ == buffer + 8);
+
+      std::same_as<BidirRange> auto moved = std::move(rev).base();
+      assert(moved.begin_ == buffer);
+      assert(moved.end_ == buffer + 8);
+    }
+  }
+  // Test non-common ranges.
+  {
+    // Test non-const (also move only).
+    {
+      auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer, buffer + 8});
+      std::same_as<BidirSentRange<MoveOnly>> auto base = std::move(rev).base();
+      assert(base.begin_ == buffer);
+      assert(base.end_ == buffer + 8);
+    }
+    // Test const.
+    {
+      const auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer, buffer + 8});
+
+      std::same_as<BidirSentRange<Copyable>> auto base = rev.base();
+      assert(base.begin_ == buffer);
+      assert(base.end_ == buffer + 8);
+
+      std::same_as<BidirSentRange<Copyable>> auto moved = std::move(rev).base();
+      assert(moved.begin_ == buffer);
+      assert(moved.end_ == buffer + 8);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/begin.pass.cpp
new file mode 100644
index 0000000..667cd34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/begin.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr reverse_iterator<iterator_t<V>> begin();
+// constexpr reverse_iterator<iterator_t<V>> begin() requires common_range<V>;
+// constexpr auto begin() const requires common_range<const V>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+static int globalCount = 0;
+
+struct CountedIter {
+    typedef std::bidirectional_iterator_tag iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef CountedIter                     self;
+
+    pointer ptr_;
+    CountedIter(pointer ptr) : ptr_(ptr) {}
+    CountedIter() = default;
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+
+    self& operator++() { globalCount++; ++ptr_; return *this; }
+    self operator++(int) {
+      auto tmp = *this;
+      ++*this;
+      return tmp;
+    }
+
+    self& operator--();
+    self operator--(int);
+};
+
+struct CountedView : std::ranges::view_base {
+  int* begin_;
+  int* end_;
+
+  CountedView(int* b, int* e) : begin_(b), end_(e) { }
+
+  auto begin() { return CountedIter(begin_); }
+  auto begin() const { return CountedIter(begin_); }
+  auto end() { return sentinel_wrapper<CountedIter>(CountedIter(end_)); }
+  auto end() const { return sentinel_wrapper<CountedIter>(CountedIter(end_)); }
+};
+
+struct RASentRange : std::ranges::view_base {
+  using sent_t = sentinel_wrapper<random_access_iterator<int*>>;
+  using sent_const_t = sentinel_wrapper<random_access_iterator<const int*>>;
+
+  int* begin_;
+  int* end_;
+
+  constexpr RASentRange(int* b, int* e) : begin_(b), end_(e) { }
+
+  constexpr random_access_iterator<int*> begin() { return random_access_iterator<int*>{begin_}; }
+  constexpr random_access_iterator<const int*> begin() const { return random_access_iterator<const int*>{begin_}; }
+  constexpr sent_t end() { return sent_t{random_access_iterator<int*>{end_}}; }
+  constexpr sent_const_t end() const { return sent_const_t{random_access_iterator<const int*>{end_}}; }
+};
+
+template<class T>
+concept BeginInvocable = requires(T t) { t.begin(); };
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Common bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
+    assert(base(rev.begin().base()) == buffer + 8);
+    assert(base(std::move(rev).begin().base()) == buffer + 8);
+
+    ASSERT_SAME_TYPE(decltype(rev.begin()), std::reverse_iterator<bidirectional_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).begin()), std::reverse_iterator<bidirectional_iterator<int*>>);
+  }
+  // Const common bidirectional range.
+  {
+    const auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
+    assert(base(rev.begin().base()) == buffer + 8);
+    assert(base(std::move(rev).begin().base()) == buffer + 8);
+
+    ASSERT_SAME_TYPE(decltype(rev.begin()), std::reverse_iterator<bidirectional_iterator<const int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).begin()), std::reverse_iterator<bidirectional_iterator<const int*>>);
+  }
+  // Non-common, non-const (move only) bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer, buffer + 8});
+    assert(base(std::move(rev).begin().base()) == buffer + 8);
+
+    ASSERT_SAME_TYPE(decltype(std::move(rev).begin()), std::reverse_iterator<bidirectional_iterator<int*>>);
+  }
+  // Non-common, non-const bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer, buffer + 8});
+    assert(base(rev.begin().base()) == buffer + 8);
+    assert(base(std::move(rev).begin().base()) == buffer + 8);
+
+    ASSERT_SAME_TYPE(decltype(rev.begin()), std::reverse_iterator<bidirectional_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).begin()), std::reverse_iterator<bidirectional_iterator<int*>>);
+  }
+  // Non-common random access range.
+  // Note: const overload invalid for non-common ranges, though it would not be imposible
+  // to implement for random access ranges.
+  {
+    auto rev = std::ranges::reverse_view(RASentRange{buffer, buffer + 8});
+    assert(base(rev.begin().base()) == buffer + 8);
+    assert(base(std::move(rev).begin().base()) == buffer + 8);
+
+    ASSERT_SAME_TYPE(decltype(rev.begin()), std::reverse_iterator<random_access_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).begin()), std::reverse_iterator<random_access_iterator<int*>>);
+  }
+  {
+    static_assert( BeginInvocable<      std::ranges::reverse_view<BidirSentRange<Copyable>>>);
+    static_assert(!BeginInvocable<const std::ranges::reverse_view<BidirSentRange<Copyable>>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  {
+    // Make sure we cache begin.
+    int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+    CountedView view{buffer, buffer + 8};
+    std::ranges::reverse_view rev(view);
+    assert(rev.begin().base().ptr_ == buffer + 8);
+    assert(globalCount == 8);
+    assert(rev.begin().base().ptr_ == buffer + 8);
+    assert(globalCount == 8);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..f3ac62d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/borrowing.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   inline constexpr bool enable_borrowed_range<reverse_view<T>> = enable_borrowed_range<T>;
+
+#include <ranges>
+
+#include "test_range.h"
+
+static_assert( std::ranges::borrowed_range<std::ranges::reverse_view<BorrowedView>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::reverse_view<NonBorrowedView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctad.compile.pass.cpp
new file mode 100644
index 0000000..caad08c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctad.compile.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+//   reverse_view(R&&) -> reverse_view<views::all_t<R>>;
+
+#include <ranges>
+
+#include <concepts>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+void testCTAD() {
+    View v;
+    Range r;
+    BorrowedRange br;
+
+    static_assert(std::same_as<
+        decltype(std::ranges::reverse_view(v)),
+        std::ranges::reverse_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::reverse_view(std::move(v))),
+        std::ranges::reverse_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::reverse_view(r)),
+        std::ranges::reverse_view<std::ranges::ref_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::reverse_view(std::move(r))),
+        std::ranges::reverse_view<std::ranges::owning_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::reverse_view(br)),
+        std::ranges::reverse_view<std::ranges::ref_view<BorrowedRange>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::reverse_view(std::move(br))),
+        std::ranges::reverse_view<std::ranges::owning_view<BorrowedRange>>
+    >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctor.default.pass.cpp
new file mode 100644
index 0000000..9a05953
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctor.default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// reverse_view() requires default_initializable<V> = default;
+
+#include <ranges>
+#include <cassert>
+
+#include "types.h"
+
+enum CtorKind { DefaultCtor, PtrCtor };
+template<CtorKind CK>
+struct BidirRangeWith : std::ranges::view_base {
+  int *ptr_ = nullptr;
+
+  constexpr BidirRangeWith() requires (CK == DefaultCtor) = default;
+  constexpr BidirRangeWith(int *ptr);
+
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>{ptr_}; }
+  constexpr bidirectional_iterator<const int*> begin() const { return bidirectional_iterator<const int*>{ptr_}; }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>{ptr_ + 8}; }
+  constexpr bidirectional_iterator<const int*> end() const { return bidirectional_iterator<const int*>{ptr_ + 8}; }
+};
+
+constexpr bool test() {
+  {
+    static_assert( std::default_initializable<std::ranges::reverse_view<BidirRangeWith<DefaultCtor>>>);
+    static_assert(!std::default_initializable<std::ranges::reverse_view<BidirRangeWith<PtrCtor>>>);
+  }
+
+  {
+    std::ranges::reverse_view<BidirRangeWith<DefaultCtor>> rev;
+    assert(rev.base().ptr_ == nullptr);
+  }
+  {
+    const std::ranges::reverse_view<BidirRangeWith<DefaultCtor>> rev;
+    assert(rev.base().ptr_ == nullptr);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
+
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctor.view.pass.cpp
new file mode 100644
index 0000000..12d15a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/ctor.view.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit reverse_view(V r);
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    BidirRange r{buffer, buffer + 8};
+    std::ranges::reverse_view<BidirRange> rev(r);
+    assert(rev.base().begin_ == buffer);
+    assert(rev.base().end_ == buffer + 8);
+  }
+  {
+    const BidirRange r{buffer, buffer + 8};
+    const std::ranges::reverse_view<BidirRange> rev(r);
+    assert(rev.base().begin_ == buffer);
+    assert(rev.base().end_ == buffer + 8);
+  }
+  {
+    std::ranges::reverse_view<BidirSentRange<MoveOnly>> rev(BidirSentRange<MoveOnly>{buffer, buffer + 8});
+    auto moved = std::move(rev).base();
+    assert(moved.begin_ == buffer);
+    assert(moved.end_ == buffer + 8);
+  }
+  {
+    const std::ranges::reverse_view<BidirSentRange<Copyable>> rev(BidirSentRange<Copyable>{buffer, buffer + 8});
+    assert(rev.base().begin_ == buffer);
+    assert(rev.base().end_ == buffer + 8);
+  }
+  {
+    // Make sure this ctor is marked as "explicit".
+    static_assert( std::is_constructible_v<std::ranges::reverse_view<BidirRange>, BidirRange>);
+    static_assert(!std::is_convertible_v<std::ranges::reverse_view<BidirRange>, BidirRange>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/end.pass.cpp
new file mode 100644
index 0000000..5bf0fe0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/end.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr reverse_iterator<iterator_t<V>> end();
+// constexpr auto end() const requires common_range<const V>;
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Common bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
+    assert(base(rev.end().base()) == buffer);
+    assert(base(std::move(rev).end().base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(rev.end()), std::reverse_iterator<bidirectional_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<int*>>);
+  }
+  // Const common bidirectional range.
+  {
+    const auto rev = std::ranges::reverse_view(BidirRange{buffer, buffer + 8});
+    assert(base(rev.end().base()) == buffer);
+    assert(base(std::move(rev).end().base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(rev.end()), std::reverse_iterator<bidirectional_iterator<const int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<const int*>>);
+  }
+  // Non-common, non-const (move only) bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirSentRange<MoveOnly>{buffer, buffer + 8});
+    assert(base(std::move(rev).end().base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<int*>>);
+  }
+  // Non-common, const bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirSentRange<Copyable>{buffer, buffer + 8});
+    assert(base(rev.end().base()) == buffer);
+    assert(base(std::move(rev).end().base()) == buffer);
+
+    ASSERT_SAME_TYPE(decltype(rev.end()), std::reverse_iterator<bidirectional_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).end()), std::reverse_iterator<bidirectional_iterator<int*>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..df7bcd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test that reverse_view conforms to range and view concepts.
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+static_assert( std::ranges::bidirectional_range<std::ranges::reverse_view<test_view<bidirectional_iterator>>>);
+static_assert( std::ranges::random_access_range<std::ranges::reverse_view<test_view<random_access_iterator>>>);
+static_assert( std::ranges::random_access_range<std::ranges::reverse_view<test_view<contiguous_iterator>>>);
+static_assert(!std::ranges::contiguous_range<std::ranges::reverse_view<test_view<contiguous_iterator>>>);
+
+static_assert(std::ranges::view<std::ranges::reverse_view<test_view<bidirectional_iterator>>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/size.pass.cpp
new file mode 100644
index 0000000..d74b048
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/size.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() requires sized_range<V>;
+// constexpr auto size() const requires sized_range<const V>;
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "types.h"
+
+// end -  begin = 8, but size may return something else.
+template<CopyCategory CC>
+struct BidirSizedRange : std::ranges::view_base {
+  int *ptr_;
+  size_t size_;
+
+  constexpr BidirSizedRange(int *ptr, size_t size) : ptr_(ptr), size_(size) {}
+  constexpr BidirSizedRange(const BidirSizedRange &) requires (CC == Copyable) = default;
+  constexpr BidirSizedRange(BidirSizedRange &&) requires (CC == MoveOnly) = default;
+  constexpr BidirSizedRange& operator=(const BidirSizedRange &) requires (CC == Copyable) = default;
+  constexpr BidirSizedRange& operator=(BidirSizedRange &&) requires (CC == MoveOnly) = default;
+
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>{ptr_}; }
+  constexpr bidirectional_iterator<const int*> begin() const { return bidirectional_iterator<const int*>{ptr_}; }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>{ptr_ + 8}; }
+  constexpr bidirectional_iterator<const int*> end() const { return bidirectional_iterator<const int*>{ptr_ + 8}; }
+
+  constexpr size_t size() const { return size_; }
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Non-common, non-const bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirSizedRange<Copyable>{buffer, 4});
+    assert(std::ranges::size(rev) == 4);
+    assert(rev.size() == 4);
+    assert(std::move(rev).size() == 4);
+
+    ASSERT_SAME_TYPE(decltype(rev.size()), size_t);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).size()), size_t);
+  }
+  // Non-common, const bidirectional range.
+  {
+    const auto rev = std::ranges::reverse_view(BidirSizedRange<Copyable>{buffer, 4});
+    assert(std::ranges::size(rev) == 4);
+    assert(rev.size() == 4);
+    assert(std::move(rev).size() == 4);
+
+    ASSERT_SAME_TYPE(decltype(rev.size()), size_t);
+    ASSERT_SAME_TYPE(decltype(std::move(rev).size()), size_t);
+  }
+  // Non-common, non-const (move only) bidirectional range.
+  {
+    auto rev = std::ranges::reverse_view(BidirSizedRange<MoveOnly>{buffer, 4});
+    assert(std::move(rev).size() == 4);
+
+    ASSERT_SAME_TYPE(decltype(std::move(rev).size()), size_t);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/types.h
new file mode 100644
index 0000000..c4c674d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.reverse/types.h
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_REVERSE_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_REVERSE_TYPES_H
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct BidirRange : std::ranges::view_base {
+  int *begin_;
+  int* end_;
+
+  constexpr BidirRange(int* b, int* e) : begin_(b), end_(e) { }
+
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>{begin_}; }
+  constexpr bidirectional_iterator<const int*> begin() const { return bidirectional_iterator<const int*>{begin_}; }
+  constexpr bidirectional_iterator<int*> end() { return bidirectional_iterator<int*>{end_}; }
+  constexpr bidirectional_iterator<const int*> end() const { return bidirectional_iterator<const int*>{end_}; }
+};
+static_assert( std::ranges::bidirectional_range<BidirRange>);
+static_assert( std::ranges::common_range<BidirRange>);
+static_assert( std::ranges::view<BidirRange>);
+static_assert( std::copyable<BidirRange>);
+
+enum CopyCategory { MoveOnly, Copyable };
+template<CopyCategory CC>
+struct BidirSentRange : std::ranges::view_base {
+  using sent_t = sentinel_wrapper<bidirectional_iterator<int*>>;
+  using sent_const_t = sentinel_wrapper<bidirectional_iterator<const int*>>;
+
+  int* begin_;
+  int* end_;
+
+  constexpr BidirSentRange(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr BidirSentRange(const BidirSentRange &) requires (CC == Copyable) = default;
+  constexpr BidirSentRange(BidirSentRange &&) requires (CC == MoveOnly) = default;
+  constexpr BidirSentRange& operator=(const BidirSentRange &) requires (CC == Copyable) = default;
+  constexpr BidirSentRange& operator=(BidirSentRange &&) requires (CC == MoveOnly) = default;
+
+  constexpr bidirectional_iterator<int*> begin() { return bidirectional_iterator<int*>{begin_}; }
+  constexpr bidirectional_iterator<const int*> begin() const { return bidirectional_iterator<const int*>{begin_}; }
+  constexpr sent_t end() { return sent_t{bidirectional_iterator<int*>{end_}}; }
+  constexpr sent_const_t end() const { return sent_const_t{bidirectional_iterator<const int*>{end_}}; }
+};
+static_assert( std::ranges::bidirectional_range<BidirSentRange<MoveOnly>>);
+static_assert(!std::ranges::common_range<BidirSentRange<MoveOnly>>);
+static_assert( std::ranges::view<BidirSentRange<MoveOnly>>);
+static_assert(!std::copyable<BidirSentRange<MoveOnly>>);
+static_assert( std::ranges::bidirectional_range<BidirSentRange<Copyable>>);
+static_assert(!std::ranges::common_range<BidirSentRange<Copyable>>);
+static_assert( std::ranges::view<BidirSentRange<Copyable>>);
+static_assert( std::copyable<BidirSentRange<Copyable>>);
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_REVERSE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/adaptor.pass.cpp
new file mode 100644
index 0000000..cd12011
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/adaptor.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::split
+
+#include <ranges>
+
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <string_view>
+#include <utility>
+
+#include "test_iterators.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct SomeView : std::ranges::view_base {
+  const std::string_view* v_;
+  constexpr SomeView(const std::string_view& v) : v_(&v) {}
+  constexpr auto begin() const { return v_->begin(); }
+  constexpr auto end() const { return v_->end(); }
+};
+
+struct NotAView { };
+
+static_assert(!std::is_invocable_v<decltype(std::views::split)>);
+static_assert(!std::is_invocable_v<decltype(std::views::split), SomeView, NotAView>);
+static_assert(!std::is_invocable_v<decltype(std::views::split), NotAView, SomeView>);
+static_assert( std::is_invocable_v<decltype(std::views::split), SomeView, SomeView>);
+
+static_assert( CanBePiped<SomeView&,    decltype(std::views::split)>);
+static_assert( CanBePiped<char(&)[10],  decltype(std::views::split)>);
+static_assert(!CanBePiped<char(&&)[10], decltype(std::views::split)>);
+static_assert(!CanBePiped<NotAView,     decltype(std::views::split)>);
+
+static_assert(std::same_as<decltype(std::views::split), decltype(std::ranges::views::split)>);
+
+constexpr bool test() {
+  std::string_view input = "abc";
+  std::string_view sep = "a";
+
+  // Test that `std::views::split` is a range adaptor.
+
+  // Test `views::split(input, sep)`.
+  {
+    SomeView view(input);
+
+    using Result = std::ranges::split_view<SomeView, std::string_view>;
+    std::same_as<Result> decltype(auto) result = std::views::split(view, sep);
+    assert(result.base().begin() == input.begin());
+    assert(result.base().end() == input.end());
+  }
+
+  // Test `views::split(sep)(input)`.
+  {
+    SomeView view(input);
+
+    using Result = std::ranges::split_view<SomeView, std::string_view>;
+    std::same_as<Result> decltype(auto) result = std::views::split(sep)(view);
+    assert(result.base().begin() == input.begin());
+    assert(result.base().end() == input.end());
+  }
+
+  // Test `view | views::split`.
+  {
+    SomeView view(input);
+
+    using Result = std::ranges::split_view<SomeView, std::string_view>;
+    std::same_as<Result> decltype(auto) result = view | std::views::split(sep);
+    assert(result.base().begin() == input.begin());
+    assert(result.base().end() == input.end());
+  }
+
+  // Test `adaptor | views::split`.
+  {
+    SomeView view(input);
+    auto f = [](char c) { return c; };
+    auto partial = std::views::transform(f) | std::views::split(sep);
+
+    using Result = std::ranges::split_view<std::ranges::transform_view<SomeView, decltype(f)>, std::string_view>;
+    std::same_as<Result> decltype(auto) result = partial(view);
+    assert(result.base().base().begin() == input.begin());
+    assert(result.base().base().end() == input.end());
+  }
+
+  // Test `views::split | adaptor`.
+  {
+    SomeView view(input);
+    auto f = [](auto v) { return v; };
+    auto partial = std::views::split(sep) | std::views::transform(f);
+
+    using Result = std::ranges::transform_view<std::ranges::split_view<SomeView, std::string_view>, decltype(f)>;
+    std::same_as<Result> decltype(auto) result = partial(view);
+    assert(result.base().base().begin() == input.begin());
+    assert(result.base().base().end() == input.end());
+  }
+
+  // Test that one can call `std::views::split` with arbitrary stuff, as long as we
+  // don't try to actually complete the call by passing it a range.
+  //
+  // That makes no sense and we can't do anything with the result, but it's valid.
+  {
+    struct X { };
+    [[maybe_unused]] auto partial = std::views::split(X{});
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/base.pass.cpp
new file mode 100644
index 0000000..56ac55c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/base.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const & requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct View : std::ranges::view_base {
+  int i;
+  int* begin() const;
+  int* end() const;
+};
+
+struct MoveOnlyView : View {
+  MoveOnly mo;
+};
+
+template <class T>
+concept HasBase = requires(T&& t) { std::forward<T>(t).base(); };
+
+static_assert(HasBase<std::ranges::split_view<View, View> const&>);
+static_assert(HasBase<std::ranges::split_view<View, View>&&>);
+
+static_assert(!HasBase<std::ranges::split_view<MoveOnlyView, View> const&>);
+static_assert(HasBase<std::ranges::split_view<MoveOnlyView, View>&&>);
+
+constexpr bool test() {
+  // const &
+  {
+    const std::ranges::split_view<View, View> sv{View{{}, 5}, View{{}, 0}};
+    std::same_as<View> decltype(auto) v = sv.base();
+    assert(v.i == 5);
+  }
+
+  // &
+  {
+    std::ranges::split_view<View, View> sv{View{{}, 5}, View{{}, 0}};
+    std::same_as<View> decltype(auto) v = sv.base();
+    assert(v.i == 5);
+  }
+
+  // &&
+  {
+    std::ranges::split_view<View, View> sv{View{{}, 5}, View{{}, 0}};
+    std::same_as<View> decltype(auto) v = std::move(sv).base();
+    assert(v.i == 5);
+  }
+
+  // const &&
+  {
+    std::ranges::split_view<View, View> sv{View{{}, 5}, View{{}, 0}};
+    std::same_as<View> decltype(auto) v = std::move(sv).base();
+    assert(v.i == 5);
+  }
+
+  // move only
+  {
+    std::ranges::split_view<MoveOnlyView, View> sv{MoveOnlyView{{}, 5}, View{{}, 0}};
+    std::same_as<MoveOnlyView> decltype(auto) v = std::move(sv).base();
+    assert(v.mo.get() == 5);
+  }
+
+  // LWG 3590 split_view::base() const & is overconstrained
+  {
+    struct CopyCtorButNotAssignable : std::ranges::view_base {
+      int i;
+      constexpr CopyCtorButNotAssignable(int ii) : i(ii) {}
+      constexpr CopyCtorButNotAssignable(const CopyCtorButNotAssignable&)            = default;
+      constexpr CopyCtorButNotAssignable(CopyCtorButNotAssignable&&)                 = default;
+      constexpr CopyCtorButNotAssignable& operator=(CopyCtorButNotAssignable&&)      = default;
+      constexpr CopyCtorButNotAssignable& operator=(const CopyCtorButNotAssignable&) = delete;
+      constexpr int* begin() const { return nullptr; }
+      constexpr int* end() const { return nullptr; }
+    };
+    static_assert(std::copy_constructible<CopyCtorButNotAssignable>);
+    static_assert(!std::copyable<CopyCtorButNotAssignable>);
+    const std::ranges::split_view<CopyCtorButNotAssignable, CopyCtorButNotAssignable> sv{
+        CopyCtorButNotAssignable{5}, CopyCtorButNotAssignable{5}};
+    std::same_as<CopyCtorButNotAssignable> decltype(auto) v = sv.base();
+    assert(v.i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/begin.pass.cpp
new file mode 100644
index 0000000..15df4d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/begin.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin();
+
+#include <array>
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+// Test that begin is not const
+template <class T>
+concept HasBegin = requires(T t) { t.begin(); };
+
+static_assert(HasBegin<std::ranges::split_view<View, View>>);
+static_assert(!HasBegin<const std::ranges::split_view<View, View>>);
+
+template <template <class> class MakeIter>
+constexpr void testOne() {
+  constexpr auto make_subrange = []<class T, std::size_t N>(T(&buffer)[N]) {
+    using Iter = MakeIter<T*>;
+    using Sent = sentinel_wrapper<Iter>;
+    return std::ranges::subrange<Iter, Sent>{Iter{buffer}, Sent{Iter{buffer + N}}};
+  };
+
+  using Iter  = MakeIter<int*>;
+  using Sent  = sentinel_wrapper<Iter>;
+  using Range = std::ranges::subrange<Iter, Sent>;
+
+  // empty view
+  {
+    std::array<int, 0> a;
+    Range range{Iter{a.data()}, Sent{Iter{a.data() + a.size()}}};
+    std::ranges::split_view sv{std::move(range), 1};
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == range.end());
+  }
+
+  // empty pattern
+  {
+    int buffer[] = {1, 2, 3};
+    auto range   = make_subrange(buffer);
+    std::ranges::split_view sv{std::move(range), std::views::empty<int>};
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == std::next(range.begin()));
+  }
+
+  // empty view and empty pattern
+  {
+    std::array<int, 0> a;
+    Range range{Iter{a.data()}, Sent{Iter{a.data() + a.size()}}};
+    std::ranges::split_view sv{std::move(range), std::views::empty<int>};
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == range.end());
+  }
+
+  // pattern found at the beginning
+  {
+    int buffer[]  = {1, 2, 3};
+    auto range    = make_subrange(buffer);
+    int pattern[] = {1, 2};
+    std::ranges::split_view sv{range, pattern};
+
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == range.begin());
+  }
+
+  // pattern found in the middle
+  {
+    int buffer[]  = {1, 2, 3, 4};
+    auto range    = make_subrange(buffer);
+    int pattern[] = {2, 3};
+    std::ranges::split_view sv{range, pattern};
+
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == std::next(range.begin()));
+  }
+
+  // pattern found at the end
+  {
+    int buffer[]  = {1, 2, 3};
+    auto range    = make_subrange(buffer);
+    int pattern[] = {2, 3};
+    std::ranges::split_view sv{range, pattern};
+
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == std::next(range.begin()));
+  }
+
+  // pattern not found
+  {
+    int buffer[]  = {1, 2, 3};
+    auto range    = make_subrange(buffer);
+    int pattern[] = {1, 3};
+    std::ranges::split_view sv{range, pattern};
+
+    auto it         = sv.begin();
+    auto firstRange = *it;
+    assert(firstRange.begin() == range.begin());
+    assert(firstRange.end() == range.end());
+  }
+
+  // Make sure that we cache the result of begin() on subsequent calls
+  {
+    struct Foo {
+      int& equalsCalledTimes;
+
+      constexpr bool operator==(const Foo&) const {
+        ++equalsCalledTimes;
+        return true;
+      }
+    };
+
+    int equalsCalledTimes = 0;
+    Foo buffer[]          = {Foo{equalsCalledTimes}, Foo{equalsCalledTimes}};
+    auto range            = make_subrange(buffer);
+
+    std::ranges::split_view sv{range, Foo{equalsCalledTimes}};
+
+    assert(equalsCalledTimes == 0);
+
+    [[maybe_unused]] auto it1       = sv.begin();
+    auto calledTimesAfterFirstBegin = equalsCalledTimes;
+    assert(calledTimesAfterFirstBegin != 0);
+
+    for (int i = 0; i < 10; ++i) {
+      [[maybe_unused]] auto it2 = sv.begin();
+      assert(equalsCalledTimes == calledTimesAfterFirstBegin);
+    }
+  }
+}
+
+constexpr bool test() {
+  testOne<forward_iterator>();
+  testOne<bidirectional_iterator>();
+  testOne<random_access_iterator>();
+  testOne<contiguous_iterator>();
+  testOne<std::type_identity_t>();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/constraints.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/constraints.compile.pass.cpp
new file mode 100644
index 0000000..66a491f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/constraints.compile.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<forward_range V, forward_range Pattern>
+//   requires view<V> && view<Pattern> &&
+//            indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to>
+// class split_view;
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class It>
+using Range = std::ranges::subrange<It, sentinel_wrapper<It>>;
+
+template <class View, class Pattern>
+concept HasSplitView = requires { typename std::ranges::split_view<View, Pattern>; };
+
+static_assert(HasSplitView<Range<int*>, Range<int*>>);
+
+// !forward_range<V>
+static_assert(!HasSplitView<Range<cpp20_input_iterator<int*>>, Range<int*>>);
+
+// !forward_range<Pattern>
+static_assert(!HasSplitView<Range<int*>, Range<cpp20_input_iterator<int*>>>);
+
+struct NotAView {
+  int* begin() const;
+  int* end() const;
+};
+
+// !view<V>
+static_assert(!HasSplitView<NotAView, Range<int*>>);
+
+// !view<Pattern>
+static_assert(!HasSplitView<Range<int*>, NotAView>);
+
+// indirectly_comparable<iterator_t<V>, iterator_t<Pattern>, ranges::equal_to
+struct Foo {};
+static_assert(!HasSplitView<Range<int*>, Range<Foo*>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctad.compile.pass.cpp
new file mode 100644
index 0000000..90d49e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctad.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class R, class P>
+// split_view(R&&, P&&) -> split_view<views::all_t<R>, views::all_t<P>>;
+//
+// template <input_range R>
+// split_view(R&&, range_value_t<R>) -> split_view<views::all_t<R>, single_view<range_value_t<R>>>;
+
+#include <concepts>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+struct Container {
+  int* begin() const;
+  int* end() const;
+};
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+template <class I1, class I2, class ExpectedView, class ExpectedPattern>
+constexpr void test() {
+  static_assert(std::is_same_v<decltype(std::ranges::split_view(std::declval<I1>(), std::declval<I2>())),
+                               std::ranges::split_view<ExpectedView, ExpectedPattern>>);
+}
+
+constexpr void testCtad() {
+  // (Range, Pattern)
+  test<View, View, View, View>();
+  test<Container&, Container&, std::ranges::ref_view<Container>, std::ranges::ref_view<Container>>();
+  test<Container&&, Container&&, std::ranges::owning_view<Container>, std::ranges::owning_view<Container>>();
+
+  // (Range, RangeElement)
+  test<Container&, int, std::ranges::ref_view<Container>, std::ranges::single_view<int>>();
+  test<View, int, View, std::ranges::single_view<int>>();
+
+  // (Range, RangeElement) with implicit conversion.
+  test<Container&, bool, std::ranges::ref_view<Container>, std::ranges::single_view<int>>();
+  test<View, bool, View, std::ranges::single_view<int>>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.default.pass.cpp
new file mode 100644
index 0000000..aff0740
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.default.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr split_view() requires
+//   default_initializable<V> && default_initializable<Pattern> = default;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+
+template <bool DefaultInitializable>
+struct View : std::ranges::view_base {
+  int i = 42;
+  constexpr explicit View()
+    requires DefaultInitializable
+  = default;
+  int* begin() const;
+  int* end() const;
+};
+
+// clang-format off
+static_assert( std::is_default_constructible_v<std::ranges::split_view<View<true >, View<true >>>);
+static_assert(!std::is_default_constructible_v<std::ranges::split_view<View<false>, View<true >>>);
+static_assert(!std::is_default_constructible_v<std::ranges::split_view<View<true >, View<false>>>);
+static_assert(!std::is_default_constructible_v<std::ranges::split_view<View<false>, View<false>>>);
+// clang-format on
+
+constexpr bool test() {
+  {
+    std::ranges::split_view<View<true>, View<true>> sv = {};
+    assert(sv.base().i == 42);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.range.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.range.pass.cpp
new file mode 100644
index 0000000..605e3d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.range.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <input_range Range>
+//   requires constructible_from<View, views::all_t<Range>> &&
+//             constructible_from<Pattern, single_view<range_value_t<Range>>>
+// constexpr split_view(Range&& r, range_value_t<Range> e);
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <type_traits>
+#include <utility>
+
+struct Counting {
+  int* times_copied = nullptr;
+  int* times_moved  = nullptr;
+
+  constexpr Counting(int& copies_ctr, int& moves_ctr) : times_copied(&copies_ctr), times_moved(&moves_ctr) {}
+
+  constexpr Counting(const Counting& rhs) : times_copied(rhs.times_copied), times_moved(rhs.times_moved) {
+    ++(*times_copied);
+  }
+  constexpr Counting(Counting&& rhs) : times_copied(rhs.times_copied), times_moved(rhs.times_moved) {
+    ++(*times_moved);
+  }
+
+  constexpr Counting& operator=(const Counting&) = default;
+  constexpr Counting& operator=(Counting&&)      = default;
+};
+
+struct ElementWithCounting : Counting {
+  using Counting::Counting;
+
+  constexpr bool operator==(const ElementWithCounting&) const { return true; }
+};
+
+struct RangeWithCounting : Counting {
+  using Counting::Counting;
+
+  constexpr const ElementWithCounting* begin() const { return nullptr; }
+  constexpr const ElementWithCounting* end() const { return nullptr; }
+
+  constexpr bool operator==(const RangeWithCounting&) const { return true; }
+};
+static_assert(std::ranges::forward_range<RangeWithCounting>);
+static_assert(!std::ranges::view<RangeWithCounting>);
+
+struct StrView : std::ranges::view_base {
+  std::string buffer_;
+
+  template <std::ranges::range R>
+  constexpr StrView(R&& r) : buffer_(std::ranges::begin(r), std::ranges::end(r)) {}
+  constexpr const char* begin() const { return buffer_.data(); }
+  constexpr const char* end() const { return buffer_.data() + buffer_.size(); }
+  constexpr bool operator==(const StrView& rhs) const { return buffer_ == rhs.buffer_; }
+};
+static_assert(std::ranges::random_access_range<StrView>);
+static_assert(std::ranges::view<StrView>);
+static_assert(std::is_copy_constructible_v<StrView>);
+
+constexpr bool test() {
+  {
+    using V = std::ranges::split_view<StrView, StrView>;
+
+    // Calling the constructor with `(std::string, range_value_t)`.
+    {
+      std::string input("abc def");
+      V v(input, ' ');
+      assert(v.base() == input);
+      assert(std::ranges::equal(*v.begin(), std::string_view("abc")));
+    }
+
+    // Calling the constructor with `(StrView, range_value_t)`.
+    {
+      StrView input("abc def");
+      V v(input, ' ');
+      assert(v.base() == input);
+      assert(std::ranges::equal(*v.begin(), std::string_view("abc")));
+    }
+
+    struct Empty {};
+    static_assert(!std::is_constructible_v<V, Empty, std::string_view>);
+    static_assert(!std::is_constructible_v<V, std::string_view, Empty>);
+  }
+
+  // Make sure the arguments are moved, not copied.
+  {
+    using Range   = RangeWithCounting;
+    using Element = ElementWithCounting;
+    using Pattern = std::ranges::single_view<Element>;
+
+    // Arguments are lvalues.
+    {
+      using View = std::ranges::ref_view<Range>;
+
+      int range_copied = 0, range_moved = 0, element_copied = 0, element_moved = 0;
+      Range range(range_copied, range_moved);
+      Element element(element_copied, element_moved);
+
+      std::ranges::split_view<View, Pattern> v(range, element);
+      assert(range_copied == 0);   // `ref_view` does neither copy...
+      assert(range_moved == 0);    // ...nor move the element.
+      assert(element_copied == 1); // The element is copied into the argument...
+      assert(element_moved == 1);  // ...and moved into the member variable.
+    }
+
+    // Arguments are rvalues.
+    {
+      using View = std::ranges::owning_view<Range>;
+
+      int range_copied = 0, range_moved = 0, element_copied = 0, element_moved = 0;
+      std::ranges::split_view<View, Pattern> v(
+          Range(range_copied, range_moved), Element(element_copied, element_moved));
+      assert(range_copied == 0);
+      assert(range_moved == 1); // `owning_view` moves the given argument.
+      assert(element_copied == 0);
+      assert(element_moved == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.view.pass.cpp
new file mode 100644
index 0000000..ad206ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/ctor.view.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr split_view(View base, Pattern pattern);
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <string_view>
+#include <utility>
+
+struct ViewWithCounting : std::ranges::view_base {
+  int* times_copied = nullptr;
+  int* times_moved  = nullptr;
+
+  constexpr ViewWithCounting(int& copies_ctr, int& moves_ctr) : times_copied(&copies_ctr), times_moved(&moves_ctr) {}
+
+  constexpr ViewWithCounting(const ViewWithCounting& rhs)
+      : times_copied(rhs.times_copied), times_moved(rhs.times_moved) {
+    ++(*times_copied);
+  }
+  constexpr ViewWithCounting(ViewWithCounting&& rhs) : times_copied(rhs.times_copied), times_moved(rhs.times_moved) {
+    ++(*times_moved);
+  }
+
+  constexpr const char* begin() const { return nullptr; }
+  constexpr const char* end() const { return nullptr; }
+
+  constexpr ViewWithCounting& operator=(const ViewWithCounting&) = default;
+  constexpr ViewWithCounting& operator=(ViewWithCounting&&)      = default;
+  constexpr bool operator==(const ViewWithCounting&) const { return true; }
+};
+
+constexpr bool test() {
+  {
+    std::string_view input = "abc def";
+    std::ranges::lazy_split_view<std::string_view, std::string_view> v(input, " ");
+    assert(v.base() == input);
+    assert(std::ranges::equal(*v.begin(), std::string_view{"abc"}));
+  }
+
+  // Make sure the arguments are moved, not copied.
+  {
+    using View    = ViewWithCounting;
+    using Pattern = ViewWithCounting;
+
+    // Arguments are lvalues.
+    {
+      int view_copied = 0, view_moved = 0, pattern_copied = 0, pattern_moved = 0;
+      View view(view_copied, view_moved);
+      Pattern pattern(pattern_copied, pattern_moved);
+
+      std::ranges::split_view<View, Pattern> v(view, pattern);
+      assert(view_copied == 1); // The local variable is copied into the argument.
+      assert(view_moved == 1);
+      assert(pattern_copied == 1);
+      assert(pattern_moved == 1);
+    }
+
+    // Arguments are rvalues.
+    {
+      int view_copied = 0, view_moved = 0, pattern_copied = 0, pattern_moved = 0;
+      std::ranges::split_view<View, Pattern> v(View(view_copied, view_moved), Pattern(pattern_copied, pattern_moved));
+      assert(view_copied == 0);
+      assert(view_moved == 1);
+      assert(pattern_copied == 0);
+      assert(pattern_moved == 1);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/end.pass.cpp
new file mode 100644
index 0000000..6c8aece
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/end.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end();
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+// Test that end is not const
+template <class T>
+concept HasEnd = requires(T t) { t.end(); };
+
+static_assert(HasEnd<std::ranges::split_view<View, View>>);
+static_assert(!HasEnd<const std::ranges::split_view<View, View>>);
+
+constexpr bool test() {
+  // return iterator
+  {
+    int buffer[]   = {1, 2, -1, 4, 5, 6, 5, 4, -1, 2, 1};
+    auto inputView = std::views::all(buffer);
+    static_assert(std::ranges::common_range<decltype(inputView)>);
+
+    std::ranges::split_view sv(buffer, -1);
+    using SplitIter                           = std::ranges::iterator_t<decltype(sv)>;
+    std::same_as<SplitIter> decltype(auto) sentinel = sv.end();
+    assert(sentinel.base() == buffer + 11);
+  }
+
+  // return sentinel
+  {
+    using Iter   = int*;
+    using Sent   = sentinel_wrapper<Iter>;
+    using Range  = std::ranges::subrange<Iter, Sent>;
+    int buffer[] = {1, 2, -1, 4, 5, 6, 5, 4, -1, 2, 1};
+    Range range  = {buffer, Sent{buffer + 11}};
+    static_assert(!std::ranges::common_range<Range>);
+
+    std::ranges::split_view sv(range, -1);
+    auto sentinel = sv.end();
+
+    using SplitIter = std::ranges::iterator_t<decltype(sv)>;
+    static_assert(!std::same_as<decltype(sentinel), SplitIter>);
+
+    assert(std::next(sv.begin(), 3) == sentinel);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/general.pass.cpp
new file mode 100644
index 0000000..8684e3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/general.pass.cpp
@@ -0,0 +1,395 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how split_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+// These test check the output `split_view` produces for a variety of inputs, including many corner cases, with no
+// restrictions on which member functions can be called.
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <concepts>
+#include <map>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include "test_macros.h"
+
+template <std::ranges::view View, std::ranges::range Expected>
+constexpr bool is_equal(View& view, const Expected& expected) {
+  return std::ranges::equal(view, expected, std::ranges::equal);
+}
+
+template <class T, class Separator, class U, size_t M>
+constexpr bool test_function_call(T&& input, Separator&& separator, std::array<U, M> expected) {
+  std::ranges::split_view v(input, separator);
+  return is_equal(v, expected);
+}
+
+template <class T, class Separator, class U, size_t M>
+constexpr bool test_with_piping(T&& input, Separator&& separator, std::array<U, M> expected) {
+  auto expected_it = expected.begin();
+  for (auto e : input | std::ranges::views::split(separator)) {
+    if (expected_it == expected.end())
+      return false;
+    if (!std::ranges::equal(e, *expected_it))
+      return false;
+
+    ++expected_it;
+  }
+
+  return expected_it == expected.end();
+}
+
+constexpr bool test_l_r_values() {
+  using namespace std::string_view_literals;
+
+  // Both lvalues and rvalues can be used as input.
+  {
+    // Lvalues.
+    {
+      auto input = "abc"sv;
+      auto sep   = " "sv;
+      [[maybe_unused]] std::ranges::split_view v(input, sep);
+    }
+
+    // Const lvalues.
+    {
+      const auto input = "abc"sv;
+      const auto sep   = " "sv;
+      [[maybe_unused]] std::ranges::split_view v(input, sep);
+    }
+
+    // Rvalues.
+    {
+      auto input = "abc"sv;
+      auto sep   = " "sv;
+      [[maybe_unused]] std::ranges::split_view v(std::move(input), std::move(sep));
+    }
+
+    // Const rvalues.
+    {
+      const auto input = "abc"sv;
+      const auto sep   = " "sv;
+      [[maybe_unused]] std::ranges::split_view v(std::move(input), std::move(sep));
+    }
+  }
+
+  return true;
+}
+
+constexpr bool test_string_literal_separator() {
+  using namespace std::string_view_literals;
+
+  // Splitting works as expected when the separator is a single character literal.
+  {
+    std::ranges::split_view v("abc def"sv, ' ');
+    assert(is_equal(v, std::array{"abc"sv, "def"sv}));
+  }
+
+  // Counterintuitively, a seemingly equivalent separator expressed as a string literal doesn't match anything. This is
+  // because of the implicit terminating null in the literal.
+  {
+    std::ranges::split_view v("abc def"sv, " ");
+    assert(is_equal(v, std::array{"abc def"sv}));
+  }
+
+  // To illustrate the previous point further, the separator is actually a two-character string literal: `{' ', '\0'}`.
+  // Should the input string contain that two-character sequence, the separator would match.
+  {
+    std::ranges::split_view v("abc \0def"sv, " ");
+    assert(is_equal(v, std::array{"abc"sv, "def"sv}));
+  }
+
+  return true;
+}
+
+// Make sure that a string literal and a `string_view` produce the same results (which isn't always the case, see
+// below).
+template <class T>
+constexpr std::string_view sv(T&& str) {
+  return std::string_view(str);
+};
+
+template <class T, class Separator, class U, size_t M>
+constexpr void test_one(T&& input, Separator&& separator, std::array<U, M> expected) {
+  assert(test_function_call(input, separator, expected));
+  assert(test_with_piping(input, separator, expected));
+}
+
+constexpr bool test_string_literals() {
+  // These tests show characteristic examples of how using string literals with `split_view` produces unexpected
+  // results due to the implicit terminating null that is treated as part of the range.
+
+  using namespace std::string_view_literals;
+
+  char short_sep = ' ';
+  auto long_sep  = "12"sv;
+
+  // When splitting a string literal, only the last segment will be null-terminated (getting the terminating null from
+  // the original range).
+  {
+    std::array expected = {"abc"sv, std::string_view("def", sizeof("def"))};
+
+    assert(test_function_call("abc def", short_sep, expected));
+    assert(test_with_piping("abc def", short_sep, expected));
+    assert(test_function_call("abc12def", long_sep, expected));
+    assert(test_with_piping("abc12def", long_sep, expected));
+  }
+
+  // Empty string.
+  {
+    // Because an empty string literal contains an implicit terminating null, the output will contain one segment.
+    std::array expected = {std::string_view("", 1)};
+
+    assert(test_function_call("", short_sep, expected));
+    assert(test_with_piping("", short_sep, expected));
+    assert(test_function_call("", long_sep, expected));
+    assert(test_with_piping("", long_sep, expected));
+  }
+
+  // Terminating null in the separator -- the character literal `' '` and the seemingly equivalent string literal `" "`
+  // are treated differently due to the presence of an implicit `\0` in the latter.
+  {
+    const char input[]          = "abc def";
+    std::array expected_unsplit = {std::string_view(input, sizeof(input))};
+    std::array expected_split   = {"abc"sv, std::string_view("def", sizeof("def"))};
+
+    assert(test_function_call(input, " ", expected_unsplit));
+    assert(test_function_call("abc \0def", " ", expected_split));
+    // Note: string literals don't work with piping because arrays decay to pointers, and pointers don't model `range`.
+  }
+
+  // Empty separator.
+  {
+    auto empty_sep      = ""sv;
+    std::array expected = {"a"sv, "b"sv, "c"sv, "\0"sv};
+
+    assert(test_function_call("abc", empty_sep, expected));
+    assert(test_with_piping("abc", empty_sep, expected));
+  }
+
+  return true;
+}
+
+bool test_nontrivial_characters() {
+  // Try a deliberately heavyweight "character" type to see if it triggers any corner cases.
+
+  using Map = std::map<std::string, int>;
+  using Vec = std::vector<Map>;
+
+  Map sep = {{"yyy", 999}};
+  Map m1  = {
+      {"a", 1},
+      {"bc", 2},
+  };
+  Map m2 = {
+      {"def", 3},
+  };
+  Map m3 = {
+      {"g", 4},
+      {"hijk", 5},
+  };
+
+  Vec expected1 = {m1, m2};
+  Vec expected2 = {m3};
+
+  std::ranges::split_view v(Vec{m1, m2, sep, m3}, sep);
+
+  // Segment 1: {m1, m2}
+  auto outer = v.begin();
+  assert(outer != v.end());
+  auto inner = (*outer).begin();
+  assert(*inner++ == m1);
+  assert(*inner++ == m2);
+  assert(inner == (*outer).end());
+
+  // Segment 2: {m3}
+  ++outer;
+  assert(outer != v.end());
+  inner = (*outer).begin();
+  assert(*inner++ == m3);
+  assert(inner == (*outer).end());
+
+  ++outer;
+  assert(outer == v.end());
+
+  return true;
+}
+
+constexpr bool main_test() {
+  using namespace std::string_view_literals;
+
+  char short_sep = ' ';
+  auto long_sep  = "12"sv;
+
+  // One separator.
+  {
+    std::array expected = {"abc"sv, "def"sv};
+    test_one("abc def"sv, short_sep, expected);
+    test_one("abc12def"sv, long_sep, expected);
+  }
+
+  // Several separators in a row.
+  {
+    std::array expected = {"abc"sv, ""sv, ""sv, ""sv, "def"sv};
+    test_one("abc    def"sv, short_sep, expected);
+    test_one("abc12121212def"sv, long_sep, expected);
+  }
+
+  // Trailing separator.
+  {
+    std::array expected = {"abc"sv, "def"sv, ""sv};
+    test_one("abc def "sv, short_sep, expected);
+    test_one("abc12def12"sv, long_sep, expected);
+  }
+
+  // Leading separator.
+  {
+    std::array expected = {""sv, "abc"sv, "def"sv};
+    test_one(" abc def"sv, short_sep, expected);
+    test_one("12abc12def"sv, long_sep, expected);
+  }
+
+  // No separator.
+  {
+    std::array expected = {"abc"sv};
+    test_one("abc"sv, short_sep, expected);
+    test_one("abc"sv, long_sep, expected);
+  }
+
+  // Input consisting of a single separator.
+  {
+    std::array expected = {""sv, ""sv};
+    test_one(" "sv, short_sep, expected);
+    test_one("12"sv, long_sep, expected);
+  }
+
+  // Input consisting of only separators.
+  {
+    std::array expected = {""sv, ""sv, ""sv, ""sv};
+    test_one("   "sv, short_sep, expected);
+    test_one("121212"sv, long_sep, expected);
+  }
+
+  // The separator and the string use the same character only.
+  {
+    auto overlapping_sep = "aaa"sv;
+    std::array expected  = {""sv, "aa"sv};
+    test_one("aaaaa"sv, overlapping_sep, expected);
+  }
+
+  // Many redundant separators.
+  {
+    std::array expected = {""sv, ""sv, "abc"sv, ""sv, ""sv, "def"sv, ""sv, ""sv};
+    test_one("  abc   def  "sv, short_sep, expected);
+    test_one("1212abc121212def1212"sv, long_sep, expected);
+  }
+
+  // Separators after every character.
+  {
+    std::array expected = {""sv, "a"sv, "b"sv, "c"sv, ""sv};
+    test_one(" a b c "sv, short_sep, expected);
+    test_one("12a12b12c12"sv, long_sep, expected);
+  }
+
+  // Overlap between the separator and the string (see https://wg21.link/lwg3505).
+  {
+    auto overlapping_sep = "ab"sv;
+    std::array expected  = {"a"sv, "aa"sv, ""sv, "b"sv};
+    test_one("aabaaababb"sv, overlapping_sep, expected);
+  }
+
+  // Empty input.
+  {
+    std::array<std::string_view, 0> expected = {};
+    test_one(""sv, short_sep, expected);
+    test_one(""sv, long_sep, expected);
+  }
+
+  // Empty separator.
+  {
+    auto empty_sep      = ""sv;
+    std::array expected = {"a"sv, "b"sv, "c"sv};
+    test_one("abc"sv, empty_sep, expected);
+    test_one("abc"sv, empty_sep, expected);
+  }
+
+  // Terminating null as a separator.
+  {
+    std::array expected = {"abc"sv, "def"sv};
+    test_one("abc\0def"sv, '\0', expected);
+    test_one("abc\0\0def"sv, "\0\0"sv, expected);
+  }
+
+  // Different character types.
+  {
+    // `char`.
+    test_function_call("abc def", ' ', std::array{"abc"sv, "def"sv});
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    // `wchar_t`.
+    test_function_call(L"abc def", L' ', std::array{L"abc"sv, L"def"sv});
+#endif
+    // `char8_t`.
+    test_function_call(u8"abc def", u8' ', std::array{u8"abc"sv, u8"def"sv});
+    // `char16_t`.
+    test_function_call(u"abc def", u' ', std::array{u"abc"sv, u"def"sv});
+    // `char32_t`.
+    test_function_call(U"abc def", U' ', std::array{U"abc"sv, U"def"sv});
+  }
+
+  // Non-character input.
+  {
+    std::array expected = {std::array{1, 2, 3}, std::array{4, 5, 6}};
+    test_one(std::array{1, 2, 3, 0, 4, 5, 6}, 0, expected);
+    test_one(std::array{1, 2, 3, 0, 0, 0, 4, 5, 6}, std::array{0, 0, 0}, expected);
+  }
+
+  return true;
+}
+
+constexpr bool example_test() {
+  // example code in the spec
+  std::string str{"the quick brown fox"};
+  std::vector<std::string_view> result;
+  for (auto r : std::views::split(str, ' ')) {
+    result.emplace_back(r.begin(), r.end());
+  }
+  using namespace std::string_view_literals;
+  auto expected = {"the"sv, "quick"sv, "brown"sv, "fox"sv};
+  assert(std::ranges::equal(result, expected));
+
+  return true;
+}
+
+int main(int, char**) {
+  example_test();
+  static_assert(example_test());
+
+  test_string_literals();
+  static_assert(test_string_literals());
+
+  test_l_r_values();
+  static_assert(test_l_r_values());
+
+  test_string_literal_separator();
+  static_assert(test_string_literal_separator());
+
+  // Note: map is not `constexpr`, so this test is runtime-only.
+  test_nontrivial_characters();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/base.pass.cpp
new file mode 100644
index 0000000..325189a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/base.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator_t<V> base() const;
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+struct Iter : ForwardIterBase<Iter> {
+  int i;
+  constexpr Iter() = default;
+  constexpr Iter(int ii) : i(ii) {}
+};
+
+constexpr bool test() {
+  // base only has one const overload
+  using SplitView = std::ranges::split_view<std::ranges::subrange<Iter>, std::ranges::subrange<Iter>>;
+  using SplitIter = std::ranges::iterator_t<SplitView>;
+
+  // const &
+  {
+    SplitView sv;
+    const SplitIter it{sv, Iter{5}, {}};
+    std::same_as<Iter> decltype(auto) base = it.base();
+    assert(base.i == 5);
+  }
+
+  // &
+  {
+    SplitView sv;
+    SplitIter it{sv, Iter{5}, {}};
+    std::same_as<Iter> decltype(auto) base = it.base();
+    assert(base.i == 5);
+  }
+
+  // &&
+  {
+    SplitView sv;
+    SplitIter it{sv, Iter{5}, {}};
+    std::same_as<Iter> decltype(auto) base = std::move(it).base();
+    assert(base.i == 5);
+  }
+
+  // const &&
+  {
+    SplitView sv;
+    const SplitIter it{sv, Iter{5}, {}};
+    std::same_as<Iter> decltype(auto) base = std::move(it).base();
+    assert(base.i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/ctor.base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/ctor.base.pass.cpp
new file mode 100644
index 0000000..20b3c19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/ctor.base.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator(split_view& parent, iterator_t<V> current, subrange<iterator_t<V>> next);
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+struct TracedMoveIter : ForwardIterBase<TracedMoveIter> {
+  bool moved = false;
+
+  constexpr TracedMoveIter()                      = default;
+  constexpr TracedMoveIter(const TracedMoveIter&) = default;
+  constexpr TracedMoveIter(TracedMoveIter&&) : moved{true} {}
+  constexpr TracedMoveIter& operator=(TracedMoveIter&&)      = default;
+  constexpr TracedMoveIter& operator=(const TracedMoveIter&) = default;
+};
+
+struct TracedMoveView : std::ranges::view_base {
+  constexpr TracedMoveIter begin() const { return {}; }
+  constexpr TracedMoveIter end() const { return {}; }
+};
+
+constexpr bool test() {
+  using SplitView = std::ranges::split_view<TracedMoveView, TracedMoveView>;
+  using SplitIter = std::ranges::iterator_t<SplitView>;
+
+  SplitView sv{TracedMoveView{}, TracedMoveView{}};
+  SplitIter iter = {sv, sv.base().begin(), std::ranges::subrange<TracedMoveIter>{sv.base().begin(), sv.base().end()}};
+  assert(iter.base().moved);
+
+  auto subRange = *iter;
+  assert(subRange.begin().moved);
+  assert(subRange.end().moved);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/ctor.default.pass.cpp
new file mode 100644
index 0000000..72a6fe5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/ctor.default.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator() = default;
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+struct PODIter : ForwardIterBase<PODIter> {
+  int i;
+};
+
+constexpr bool test() {
+  using SplitView = std::ranges::split_view<std::ranges::subrange<PODIter>, std::ranges::subrange<PODIter>>;
+  using SplitIter = std::ranges::iterator_t<SplitView>;
+  {
+    SplitIter iter;
+    assert(iter.base().i == 0); // PODIter has to be initialised to have value 0
+  }
+
+  {
+    SplitIter iter = {};        // explicit(false)
+    assert(iter.base().i == 0); // PODIter has to be initialised to have value 0
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/deref.pass.cpp
new file mode 100644
index 0000000..721a1cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/deref.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr value_type operator*() const;
+//   Effects: Equivalent to return {cur_, next_.begin()};
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+struct Iter : ForwardIterBase<Iter> {
+  int i;
+  constexpr Iter() = default;
+  constexpr Iter(int ii) : i(ii) {}
+};
+
+constexpr bool test() {
+  using SplitView = std::ranges::split_view<std::ranges::subrange<Iter>, std::ranges::subrange<Iter>>;
+  using SplitIter = std::ranges::iterator_t<SplitView>;
+
+  {
+    SplitView sv;
+    Iter current{5};
+    std::ranges::subrange next{Iter{6}, Iter{7}};
+    const SplitIter it{sv, current, next};
+    std::same_as<std::ranges::subrange<Iter>> decltype(auto) value = *it;
+    assert(value.begin().i == 5);
+    assert(value.end().i == 6);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/equal.pass.cpp
new file mode 100644
index 0000000..30888d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/equal.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const iterator& x, const iterator& y);
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class Iter>
+constexpr void testOne() {
+  using Range     = std::ranges::subrange<Iter>;
+  using SplitView = std::ranges::split_view<Range, std::ranges::single_view<int>>;
+  static_assert(std::ranges::common_range<SplitView>);
+
+  {
+    // simple test
+    {
+      int buffer[] = {0, 1, 2, -1, 4, 5, 6};
+      Range input(Iter{buffer}, Iter{buffer + 7});
+      SplitView sv(input, -1);
+      auto b = sv.begin(), e = sv.end();
+
+      assert(b == b);
+      assert(!(b != b));
+
+      assert(e == e);
+      assert(!(e != e));
+
+      assert(!(b == e));
+      assert(b != e);
+
+      std::advance(b, 2);
+      assert(b == b);
+      assert(!(b != b));
+
+      assert(e == e);
+      assert(!(e != e));
+
+      assert(b == e);
+      assert(!(b != e));
+    }
+
+    // iterator at trailing empty position should not equal to end
+    {
+      int buffer[] = {0, 1, 2, -1};
+      Range input(Iter{buffer}, Iter{buffer + 4});
+      SplitView sv(input, -1);
+      auto b = sv.begin(), e = sv.end();
+
+      ++b; // cur points to end but trailing_empty is true
+
+      assert(b != e);
+      assert(!(b == e));
+
+      ++b;
+      assert(b == e);
+      assert(!(b != e));
+    }
+
+    // Default-constructed iterators compare equal.
+    {
+      int buffer[] = {0, 1, 2, -1, 4, 5, 6};
+      Range input(Iter{buffer}, Iter{buffer + 7});
+      std::ranges::split_view sv(buffer, -1);
+      using SplitIter = decltype(sv.begin());
+      SplitIter i1, i2;
+      assert(i1 == i2);
+      assert(!(i1 != i2));
+    }
+  }
+}
+
+constexpr bool test() {
+  testOne<forward_iterator<int*>>();
+  testOne<bidirectional_iterator<int*>>();
+  testOne<random_access_iterator<int*>>();
+  testOne<contiguous_iterator<int*>>();
+  testOne<int*>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/increment.pass.cpp
new file mode 100644
index 0000000..56036dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/increment.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator++();
+// constexpr iterator operator++(int);
+
+#include <cassert>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class Iter>
+constexpr void testOne() {
+  constexpr auto make_subrange = []<std::size_t N>(int(&buffer)[N]) {
+    return std::ranges::subrange<Iter>{Iter{buffer}, Iter{buffer + N}};
+  };
+
+  // next subrange does not reach the end
+  {
+    int buffer[] = {0, 1, 2, -1, 4, 5, -1, 7};
+    auto input   = make_subrange(buffer);
+    std::ranges::split_view sv(input, -1);
+    using SplitIter = std::ranges::iterator_t<decltype(sv)>;
+
+    // ++it
+    {
+      auto it = sv.begin();
+
+      decltype(auto) it1 = ++it;
+      static_assert(std::is_same_v<decltype(it1), SplitIter&>);
+      assert(&it1 == &it);
+
+      assert(base((*it).begin()) == buffer + 4);
+      assert(base((*it).end()) == buffer + 6);
+
+      ++it;
+      assert(base((*it).begin()) == buffer + 7);
+      assert(base((*it).end()) == buffer + 8);
+    }
+
+    // it++
+    {
+      auto it       = sv.begin();
+      auto original = it;
+
+      decltype(auto) it1 = it++;
+      static_assert(std::is_same_v<decltype(it1), SplitIter>);
+      assert(it1 == original);
+
+      assert(base((*it).begin()) == buffer + 4);
+      assert(base((*it).end()) == buffer + 6);
+
+      it++;
+      assert(base((*it).begin()) == buffer + 7);
+      assert(base((*it).end()) == buffer + 8);
+    }
+  }
+
+  // next's begin is the end
+  {
+    int buffer[] = {0, 1, 2};
+    auto input   = make_subrange(buffer);
+    std::ranges::split_view sv(input, -1);
+    using SplitIter = std::ranges::iterator_t<decltype(sv)>;
+
+    // ++it
+    {
+      auto it = sv.begin();
+
+      decltype(auto) it1 = ++it; // trailing_empty is false
+      static_assert(std::is_same_v<decltype(it1), SplitIter&>);
+      assert(&it1 == &it);
+
+      assert(it == sv.end());
+    }
+
+    // it++
+    {
+      auto it       = sv.begin();
+      auto original = it;
+
+      decltype(auto) it1 = it++; // trailing_empty is false
+      static_assert(std::is_same_v<decltype(it1), SplitIter>);
+      assert(it1 == original);
+
+      assert(it == sv.end());
+    }
+  }
+
+  // next's end is the end
+  {
+    int buffer[] = {0, 1, 2, -1};
+    auto input   = make_subrange(buffer);
+    std::ranges::split_view sv(input, -1);
+    using SplitIter = std::ranges::iterator_t<decltype(sv)>;
+
+    // ++it
+    {
+      auto it = sv.begin();
+
+      decltype(auto) it1 = ++it; // trailing_empty is true
+      static_assert(std::is_same_v<decltype(it1), SplitIter&>);
+      assert(&it1 == &it);
+
+      assert(it != sv.end());
+      assert(base((*it).begin()) == buffer + 4);
+      assert(base((*it).begin()) == buffer + 4);
+
+      ++it;
+      assert(it == sv.end());
+    }
+
+    // it++
+    {
+      auto it       = sv.begin();
+      auto original = it;
+
+      decltype(auto) it1 = it++; // trailing_empty is true
+      static_assert(std::is_same_v<decltype(it1), SplitIter>);
+      assert(it1 == original);
+
+      assert(it != sv.end());
+
+      assert(base((*it).begin()) == buffer + 4);
+      assert(base((*it).begin()) == buffer + 4);
+
+      it++;
+      assert(it == sv.end());
+    }
+  }
+}
+
+constexpr bool test() {
+  testOne<forward_iterator<int*>>();
+  testOne<bidirectional_iterator<int*>>();
+  testOne<random_access_iterator<int*>>();
+  testOne<contiguous_iterator<int*>>();
+  testOne<int*>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/member_types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/member_types.compile.pass.cpp
new file mode 100644
index 0000000..aa1a346
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/iterator/member_types.compile.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Member typedefs in split_view<V, P>::iterator.
+
+#include <concepts>
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class Iter, class PatternIter>
+constexpr void testIteratorTypedef() {
+  using Range     = std::ranges::subrange<Iter, sentinel_wrapper<Iter>>;
+  using Pattern   = std::ranges::subrange<PatternIter, sentinel_wrapper<PatternIter>>;
+  using SplitIter = std::ranges::iterator_t<std::ranges::split_view<Range, Pattern>>;
+
+  static_assert(std::same_as<typename SplitIter::iterator_concept, //
+                             std::forward_iterator_tag>);
+
+  static_assert(std::same_as<typename SplitIter::iterator_category, //
+                             std::input_iterator_tag>);
+
+  static_assert(std::same_as<typename SplitIter::value_type, //
+                             std::ranges::subrange<Iter>>);
+
+  static_assert(std::same_as<typename SplitIter::difference_type, //
+                             std::iter_difference_t<Iter>>);
+}
+
+template <class Iter>
+void testIteratorTypedefPattern() {
+  testIteratorTypedef<Iter, forward_iterator<int*>>();
+  testIteratorTypedef<Iter, bidirectional_iterator<int*>>();
+  testIteratorTypedef<Iter, random_access_iterator<int*>>();
+  testIteratorTypedef<Iter, contiguous_iterator<int*>>();
+  testIteratorTypedef<Iter, int*>();
+}
+
+void test() {
+  testIteratorTypedefPattern<forward_iterator<int*>>();
+  testIteratorTypedefPattern<bidirectional_iterator<int*>>();
+  testIteratorTypedefPattern<random_access_iterator<int*>>();
+  testIteratorTypedefPattern<contiguous_iterator<int*>>();
+  testIteratorTypedefPattern<int*>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..7914af9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/ctor.default.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+
+#include <cassert>
+#include <ranges>
+
+struct PODSentinel {
+  int i;
+
+  friend constexpr bool operator==(int*, const PODSentinel& p) { return p.i == 0; }
+};
+
+struct Range : std::ranges::view_base {
+  int* begin() const;
+  PODSentinel end();
+};
+
+constexpr bool test() {
+  using SplitView = std::ranges::split_view<Range, Range>;
+  using SplitIter = std::ranges::iterator_t<SplitView>;
+  using SplitSent = std::ranges::sentinel_t<SplitView>;
+  static_assert(!std::is_same_v<SplitSent, SplitIter>);
+
+  {
+    SplitIter it;
+    SplitSent s;
+    assert(s == it); // to make sure that s.__end_.i is initialised to 0;
+  }
+
+  {
+    SplitIter it;
+    SplitSent s = {};
+    assert(s == it); // to make sure that s.__end_.i is initialised to 0;
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/ctor.parent.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/ctor.parent.pass.cpp
new file mode 100644
index 0000000..c89b1ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/ctor.parent.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit sentinel(split_view& parent);
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+
+// test explicit
+using Range     = std::ranges::subrange<int*, sentinel_wrapper<int*>>;
+using SplitView = std::ranges::split_view<Range, std::ranges::single_view<int>>;
+using SplitSent = std::ranges::sentinel_t<SplitView>;
+
+static_assert(std::is_constructible_v<SplitSent, SplitView&>);
+static_assert(!std::is_convertible_v<SplitView&, SplitSent>);
+
+constexpr bool test() {
+  {
+    int buffer[] = {0, 1, 2};
+    Range input{buffer, sentinel_wrapper<int*>(buffer + 3)};
+    SplitView sv(input, -1);
+    auto it = sv.begin();
+
+    SplitSent sent(sv);
+    assert(sent != it);
+
+    ++it;
+    assert(sent == it);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/equal.pass.cpp
new file mode 100644
index 0000000..7b33a6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/sentinel/equal.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const iterator& x, const sentinel& y);
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class Iter>
+constexpr void testOne() {
+  using Sent      = sentinel_wrapper<Iter>;
+  using Range     = std::ranges::subrange<Iter, Sent>;
+  using SplitView = std::ranges::split_view<Range, std::ranges::single_view<int>>;
+  static_assert(!std::ranges::common_range<SplitView>);
+
+  {
+    // simple test
+    {
+      int buffer[] = {0, 1, 2, -1, 4, 5, 6};
+      Range input(Iter{buffer}, Sent{Iter{buffer + 7}});
+      SplitView sv(input, -1);
+      auto b = sv.begin();
+      auto e = sv.end();
+
+      assert(!(b == e));
+      assert(b != e);
+
+      std::advance(b, 2);
+      assert(b == e);
+      assert(!(b != e));
+    }
+
+    // iterator at trailing empty position should not equal to end
+    {
+      int buffer[] = {0, 1, 2, -1};
+      Range input(Iter{buffer}, Sent{Iter{buffer + 4}});
+      SplitView sv(input, -1);
+      auto b = sv.begin();
+      auto e = sv.end();
+
+      ++b; // cur points to end but trailing_empty is true
+
+      assert(b != e);
+      assert(!(b == e));
+
+      ++b;
+      assert(b == e);
+      assert(!(b != e));
+    }
+  }
+}
+
+constexpr bool test() {
+  testOne<forward_iterator<int*>>();
+  testOne<bidirectional_iterator<int*>>();
+  testOne<random_access_iterator<int*>>();
+  testOne<contiguous_iterator<int*>>();
+  testOne<int*>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/types.h
new file mode 100644
index 0000000..ff2ce38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.split/types.h
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_SPLIT_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_SPLIT_TYPES_H
+
+#include <functional>
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+
+template <class Derived>
+struct ForwardIterBase {
+  using iterator_concept = std::forward_iterator_tag;
+  using value_type       = int;
+  using difference_type  = intptr_t;
+
+  constexpr int operator*() const { return 5; }
+
+  constexpr Derived& operator++() { return static_cast<Derived&>(*this); }
+  constexpr Derived operator++(int) { return {}; }
+
+  friend constexpr bool operator==(const ForwardIterBase&, const ForwardIterBase&) { return true; };
+};
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_SPLIT_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/adaptor.pass.cpp
new file mode 100644
index 0000000..8796f9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/adaptor.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::take_while
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "types.h"
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i < 3; }
+};
+
+struct Foo {};
+
+struct MoveOnlyView : IntBufferViewBase {
+  using IntBufferViewBase::IntBufferViewBase;
+  MoveOnlyView(const MoveOnlyView&)            = delete;
+  MoveOnlyView& operator=(const MoveOnlyView&) = delete;
+  MoveOnlyView(MoveOnlyView&&)                 = default;
+  MoveOnlyView& operator=(MoveOnlyView&&)      = default;
+  constexpr const int* begin() const { return buffer_; }
+  constexpr const int* end() const { return buffer_ + size_; }
+};
+
+static_assert(!std::is_invocable_v<decltype((std::views::take_while))>);
+static_assert(std::is_invocable_v<decltype((std::views::take_while)), int>);
+static_assert(std::is_invocable_v<decltype((std::views::take_while)), Pred>);
+static_assert(!std::is_invocable_v<decltype((std::views::take_while)), int, Pred>);
+static_assert(std::is_invocable_v<decltype((std::views::take_while)), int (&)[2], Pred>);
+static_assert(!std::is_invocable_v<decltype((std::views::take_while)), Foo (&)[2], Pred>);
+static_assert(std::is_invocable_v<decltype((std::views::take_while)), MoveOnlyView, Pred>);
+
+template <class View, class T>
+concept CanBePiped =
+    requires(View&& view, T&& t) {
+      { std::forward<View>(view) | std::forward<T>(t) };
+    };
+
+static_assert(!CanBePiped<MoveOnlyView, decltype(std::views::take_while)>);
+static_assert(CanBePiped<MoveOnlyView, decltype(std::views::take_while(Pred{}))>);
+static_assert(!CanBePiped<int, decltype(std::views::take_while(Pred{}))>);
+static_assert(CanBePiped<int (&)[2], decltype(std::views::take_while(Pred{}))>);
+static_assert(!CanBePiped<Foo (&)[2], decltype(std::views::take_while(Pred{}))>);
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 3, 2, 1};
+
+  // Test `views::take_while(p)(v)`
+  {
+    using Result                               = std::ranges::take_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> decltype(auto) result = std::views::take_while(Pred{})(MoveOnlyView{buff});
+    auto expected                              = {1, 2};
+    assert(std::ranges::equal(result, expected));
+  }
+  {
+    auto const partial                         = std::views::take_while(Pred{});
+    using Result                               = std::ranges::take_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> decltype(auto) result = partial(MoveOnlyView{buff});
+    auto expected                              = {1, 2};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `v | views::take_while(p)`
+  {
+    using Result                               = std::ranges::take_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> decltype(auto) result = MoveOnlyView{buff} | std::views::take_while(Pred{});
+    auto expected                              = {1, 2};
+    assert(std::ranges::equal(result, expected));
+  }
+  {
+    auto const partial                         = std::views::take_while(Pred{});
+    using Result                               = std::ranges::take_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> decltype(auto) result = MoveOnlyView{buff} | partial;
+    auto expected                              = {1, 2};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test `views::take_while(v, p)`
+  {
+    using Result                               = std::ranges::take_while_view<MoveOnlyView, Pred>;
+    std::same_as<Result> decltype(auto) result = std::views::take_while(MoveOnlyView{buff}, Pred{});
+    auto expected                              = {1, 2};
+    assert(std::ranges::equal(result, expected));
+  }
+
+  // Test adaptor | adaptor
+  {
+    struct Pred2 {
+      constexpr bool operator()(int i) const { return i < 2; }
+    };
+    auto const partial = std::views::take_while(Pred{}) | std::views::take_while(Pred2{});
+    using Result       = std::ranges::take_while_view<std::ranges::take_while_view<MoveOnlyView, Pred>, Pred2>;
+    std::same_as<Result> decltype(auto) result = MoveOnlyView{buff} | partial;
+    auto expected                              = {1};
+    assert(std::ranges::equal(result, expected));
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/base.pass.cpp
new file mode 100644
index 0000000..ddf6e7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/base.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const & requires copy_constructible<V> { return base_; }
+// constexpr V base() && { return std::move(base_); }
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "types.h"
+
+struct View : std::ranges::view_interface<View> {
+  int i;
+  int* begin() const;
+  int* end() const;
+};
+
+struct MoveOnlyView : View {
+  MoveOnly mo;
+};
+
+template <class T>
+concept HasBase = requires(T&& t) { std::forward<T>(t).base(); };
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i > 5; }
+};
+
+static_assert(HasBase<std::ranges::take_while_view<View, Pred> const&>);
+static_assert(HasBase<std::ranges::take_while_view<View, Pred>&&>);
+
+static_assert(!HasBase<std::ranges::take_while_view<MoveOnlyView, Pred> const&>);
+static_assert(HasBase<std::ranges::take_while_view<MoveOnlyView, Pred>&&>);
+
+constexpr bool test() {
+  // const &
+  {
+    const std::ranges::take_while_view<View, Pred> twv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = twv.base();
+    assert(v.i == 5);
+  }
+
+  // &
+  {
+    std::ranges::take_while_view<View, Pred> twv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = twv.base();
+    assert(v.i == 5);
+  }
+
+  // &&
+  {
+    std::ranges::take_while_view<View, Pred> twv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = std::move(twv).base();
+    assert(v.i == 5);
+  }
+
+  // const &&
+  {
+    const std::ranges::take_while_view<View, Pred> twv{View{{}, 5}, {}};
+    std::same_as<View> decltype(auto) v = std::move(twv).base();
+    assert(v.i == 5);
+  }
+
+  // move only
+  {
+    std::ranges::take_while_view<MoveOnlyView, Pred> twv{MoveOnlyView{{}, 5}, {}};
+    std::same_as<MoveOnlyView> decltype(auto) v = std::move(twv).base();
+    assert(v.mo.get() == 5);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/begin.pass.cpp
new file mode 100644
index 0000000..a0156c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/begin.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin() requires (!simple-view<V>)
+// { return ranges::begin(base_); }
+//
+// constexpr auto begin() const
+//   requires range<const V> &&
+//            indirect_unary_predicate<const Pred, iterator_t<const V>>
+// { return ranges::begin(base_); }
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "types.h"
+
+// Test Constraints
+template <class T>
+concept HasConstBegin = requires(const T& ct) { ct.begin(); };
+
+template <class T>
+concept HasBegin = requires(T& t) { t.begin(); };
+
+template <class T>
+concept HasConstAndNonConstBegin =
+    HasConstBegin<T> &&
+    requires(T& t, const T& ct) { requires !std::same_as<decltype(t.begin()), decltype(ct.begin())>; };
+
+template <class T>
+concept HasOnlyNonConstBegin = HasBegin<T> && !HasConstBegin<T>;
+
+template <class T>
+concept HasOnlyConstBegin = HasConstBegin<T> && !HasConstAndNonConstBegin<T>;
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i > 5; }
+};
+
+static_assert(HasOnlyConstBegin<std::ranges::take_while_view<SimpleView, Pred>>);
+
+static_assert(HasOnlyNonConstBegin<std::ranges::take_while_view<ConstNotRange, Pred>>);
+
+static_assert(HasConstAndNonConstBegin<std::ranges::take_while_view<NonSimple, Pred>>);
+
+struct NotPredForConst {
+  constexpr bool operator()(int& i) const { return i > 5; }
+};
+static_assert(HasOnlyNonConstBegin<std::ranges::take_while_view<NonSimple, NotPredForConst>>);
+
+constexpr bool test() {
+  // simple-view
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    SimpleView v{buffer};
+    std::ranges::take_while_view twv(v, Pred{});
+    std::same_as<int*> decltype(auto) it1 = twv.begin();
+    assert(it1 == buffer);
+    std::same_as<int*> decltype(auto) it2 = std::as_const(twv).begin();
+    assert(it2 == buffer);
+  }
+
+  // const not range
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    ConstNotRange v{buffer};
+    std::ranges::take_while_view twv(v, Pred{});
+    std::same_as<int*> decltype(auto) it1 = twv.begin();
+    assert(it1 == buffer);
+  }
+
+  // NonSimple
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    NonSimple v{buffer};
+    std::ranges::take_while_view twv(v, Pred{});
+    std::same_as<int*> decltype(auto) it1 = twv.begin();
+    assert(it1 == buffer);
+    std::same_as<const int*> decltype(auto) it2 = std::as_const(twv).begin();
+    assert(it2 == buffer);
+  }
+
+  // NotPredForConst
+  // LWG 3450: The const overloads of `take_while_view::begin/end` are underconstrained
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    NonSimple v{buffer};
+    std::ranges::take_while_view twv(v, NotPredForConst{});
+    std::same_as<int*> decltype(auto) it1 = twv.begin();
+    assert(it1 == buffer);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctad.compile.pass.cpp
new file mode 100644
index 0000000..bbcfc3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctad.compile.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//   template<class R, class Pred>
+//     take_while_view(R&&, Pred) -> take_while_view<views::all_t<R>, Pred>;
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "types.h"
+
+struct Container {
+  int* begin() const;
+  int* end() const;
+};
+
+struct View : std::ranges::view_base {
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  bool operator()(int i) const;
+};
+
+bool pred(int);
+
+static_assert(std::is_same_v<decltype(std::ranges::take_while_view(Container{}, Pred{})),
+                             std::ranges::take_while_view<std::ranges::owning_view<Container>, Pred>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::take_while_view(View{}, pred)), //
+                             std::ranges::take_while_view<View, bool (*)(int)>>);
+
+static_assert(std::is_same_v<decltype(std::ranges::take_while_view(View{}, Pred{})), //
+                             std::ranges::take_while_view<View, Pred>>);
+
+void testRef() {
+  Container c{};
+  Pred p{};
+  static_assert(std::is_same_v<decltype(std::ranges::take_while_view(c, p)),
+                               std::ranges::take_while_view<std::ranges::ref_view<Container>, Pred>>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctor.default.pass.cpp
new file mode 100644
index 0000000..67eaaca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctor.default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// take_while_view() requires default_initializable<V> && default_initializable<Pred> = default;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+
+template <bool defaultInitable>
+struct View : std::ranges::view_base {
+  int i;
+  constexpr explicit View()
+    requires defaultInitable
+  = default;
+  int* begin() const;
+  int* end() const;
+};
+
+template <bool defaultInitable>
+struct Pred {
+  int i;
+  constexpr explicit Pred()
+    requires defaultInitable
+  = default;
+  bool operator()(int) const;
+};
+
+// clang-format off
+static_assert( std::is_default_constructible_v<std::ranges::take_while_view<View<true >, Pred<true >>>);
+static_assert(!std::is_default_constructible_v<std::ranges::take_while_view<View<false>, Pred<true >>>);
+static_assert(!std::is_default_constructible_v<std::ranges::take_while_view<View<true >, Pred<false>>>);
+static_assert(!std::is_default_constructible_v<std::ranges::take_while_view<View<false>, Pred<false>>>);
+// clang-format on
+
+constexpr bool test() {
+  {
+    std::ranges::take_while_view<View<true>, Pred<true>> twv = {};
+    assert(twv.base().i == 0);
+    assert(twv.pred().i == 0);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctor.view.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctor.view.pass.cpp
new file mode 100644
index 0000000..7adeb67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/ctor.view.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr take_while_view(V base, Pred pred);
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+
+struct View : std::ranges::view_base {
+  MoveOnly mo;
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  bool copied      = false;
+  bool moved       = false;
+  constexpr Pred() = default;
+  constexpr Pred(Pred&&) : moved(true) {}
+  constexpr Pred(const Pred&) : copied(true) {}
+  bool operator()(int) const;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::take_while_view<View, Pred> twv = {View{{}, MoveOnly{5}}, Pred{}};
+    assert(twv.pred().moved);
+    assert(!twv.pred().copied);
+    assert(std::move(twv).base().mo.get() == 5);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/end.pass.cpp
new file mode 100644
index 0000000..a5a5ff4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/end.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end() requires (!simple-view<V>)
+// { return sentinel<false>(ranges::end(base_), addressof(*pred_)); }
+// constexpr auto end() const
+//   requires range<const V> &&
+//            indirect_unary_predicate<const Pred, iterator_t<const V>>
+// { return sentinel<true>(ranges::end(base_), addressof(*pred_)); }
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "types.h"
+
+// Test Constraints
+template <class T>
+concept HasConstEnd = requires(const T& ct) { ct.end(); };
+
+template <class T>
+concept HasEnd = requires(T& t) { t.end(); };
+
+template <class T>
+concept HasConstAndNonConstEnd =
+    HasConstEnd<T> && requires(T& t, const T& ct) { requires !std::same_as<decltype(t.end()), decltype(ct.end())>; };
+
+template <class T>
+concept HasOnlyNonConstEnd = HasEnd<T> && !HasConstEnd<T>;
+
+template <class T>
+concept HasOnlyConstEnd = HasConstEnd<T> && !HasConstAndNonConstEnd<T>;
+
+struct Pred {
+  constexpr bool operator()(int i) const { return i < 5; }
+};
+
+static_assert(HasOnlyConstEnd<std::ranges::take_while_view<SimpleView, Pred>>);
+
+static_assert(HasOnlyNonConstEnd<std::ranges::take_while_view<ConstNotRange, Pred>>);
+
+static_assert(HasConstAndNonConstEnd<std::ranges::take_while_view<NonSimple, Pred>>);
+
+struct NotPredForConst {
+  constexpr bool operator()(int& i) const { return i > 5; }
+};
+static_assert(HasOnlyNonConstEnd<std::ranges::take_while_view<NonSimple, NotPredForConst>>);
+
+constexpr bool test() {
+  // simple-view
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    SimpleView v{buffer};
+    std::ranges::take_while_view twv(v, Pred{});
+    decltype(auto) it1 = twv.end();
+    assert(it1 == buffer + 4);
+    decltype(auto) it2 = std::as_const(twv).end();
+    assert(it2 == buffer + 4);
+
+    static_assert(std::same_as<decltype(it1), decltype(it2)>);
+  }
+
+  // const not range
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    ConstNotRange v{buffer};
+    std::ranges::take_while_view twv(v, Pred{});
+    decltype(auto) it1 = twv.end();
+    assert(it1 == buffer + 4);
+  }
+
+  // NonSimple
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    NonSimple v{buffer};
+    std::ranges::take_while_view twv(v, Pred{});
+    decltype(auto) it1 = twv.end();
+    assert(it1 == buffer + 4);
+    decltype(auto) it2 = std::as_const(twv).end();
+    assert(it2 == buffer + 4);
+
+    static_assert(!std::same_as<decltype(it1), decltype(it2)>);
+  }
+
+  // NotPredForConst
+  // LWG 3450: The const overloads of `take_while_view::begin/end` are underconstrained
+  {
+    int buffer[] = {1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1};
+    NonSimple v{buffer};
+    std::ranges::take_while_view twv(v, NotPredForConst{});
+    decltype(auto) it1 = twv.end();
+    assert(it1 == buffer);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/general.pass.cpp
new file mode 100644
index 0000000..0f07707
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/general.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how take_while_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+
+int main(int, char**) {
+  {
+    auto input      = {0, 1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1, 0};
+    auto small      = [](const auto x) noexcept { return x < 5; };
+    auto small_ints = input | std::views::take_while(small);
+    auto expected   = {0, 1, 2, 3, 4};
+    assert(std::ranges::equal(small_ints, expected));
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/pred.pass.cpp
new file mode 100644
index 0000000..c9223c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/pred.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr const Pred& pred() const;
+
+#include <cassert>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+struct View : std::ranges::view_interface<View> {
+  int* begin() const;
+  int* end() const;
+};
+
+struct Pred {
+  int i;
+  bool operator()(int) const;
+};
+
+constexpr bool test() {
+  // &
+  {
+    std::ranges::take_while_view<View, Pred> twv{{}, Pred{5}};
+    decltype(auto) x = twv.pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  // const &
+  {
+    const std::ranges::take_while_view<View, Pred> twv{{}, Pred{5}};
+    decltype(auto) x = twv.pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  // &&
+  {
+    std::ranges::take_while_view<View, Pred> twv{{}, Pred{5}};
+    decltype(auto) x = std::move(twv).pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  // const &&
+  {
+    const std::ranges::take_while_view<View, Pred> twv{{}, Pred{5}};
+    decltype(auto) x = std::move(twv).pred();
+    static_assert(std::same_as<decltype(x), Pred const&>);
+    assert(x.i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/range.concept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/range.concept.compile.pass.cpp
new file mode 100644
index 0000000..f2acf1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/range.concept.compile.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// concept checking
+// template<view V, class Pred>
+//     requires input_range<V> && is_object_v<Pred> &&
+//              indirect_unary_predicate<const Pred, iterator_t<V>>
+//   class take_while_view;
+
+#include <array>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class It>
+using Range = std::ranges::subrange<It, sentinel_wrapper<It>>;
+
+template <class Val = int>
+struct Pred {
+  bool operator()(const Val&) const;
+};
+
+template <class V, class Pred>
+concept HasTakeWhileView = requires { typename std::ranges::take_while_view<V, Pred>; };
+
+static_assert(HasTakeWhileView<Range<int*>, bool (*)(int)>);
+static_assert(HasTakeWhileView<Range<int*>, Pred<int>>);
+
+// !view<V>
+static_assert(!HasTakeWhileView<std::array<int, 5>, Pred<int>>);
+
+// !input_range
+static_assert(!HasTakeWhileView<Range<cpp20_output_iterator<int*>>, bool (*)(int)>);
+
+// !is_object_v<Pred>
+static_assert(!HasTakeWhileView<Range<int*>, Pred<int>&>);
+
+// !indirect_unary_predicate<const Pred, iterator_t<V>>
+static_assert(!HasTakeWhileView<Range<int*>, int>);
+static_assert(!HasTakeWhileView<Range<int**>, Pred<int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.base.pass.cpp
new file mode 100644
index 0000000..b952534
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.base.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit sentinel(sentinel_t<Base> end, const Pred* pred);
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "../types.h"
+
+struct Sent {
+  int i;
+
+  friend constexpr bool operator==(int* iter, const Sent& s) { return s.i > *iter; }
+};
+
+struct Range : std::ranges::view_base {
+  int* begin() const;
+  Sent end();
+};
+
+struct Pred {
+  bool operator()(int i) const;
+};
+
+// Test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(std::is_constructible_v<std::ranges::sentinel_t<std::ranges::take_while_view<Range, Pred>>,
+                                      std::ranges::sentinel_t<Range>,
+                                      const Pred*>);
+static_assert(!ImplicitlyConstructible<std::ranges::sentinel_t<std::ranges::take_while_view<Range, Pred>>,
+                                       std::ranges::sentinel_t<Range>,
+                                       const Pred*>);
+
+constexpr bool test() {
+  // base is init correctly
+  {
+    using R        = std::ranges::take_while_view<Range, bool (*)(int)>;
+    using Sentinel = std::ranges::sentinel_t<R>;
+
+    Sentinel s1(Sent{5}, nullptr);
+    assert(s1.base().i == 5);
+  }
+
+  // pred is init correctly
+  {
+    bool called = false;
+    auto pred   = [&](int) {
+      called = true;
+      return false;
+    };
+
+    using R        = std::ranges::take_while_view<Range, decltype(pred)>;
+    using Sentinel = std::ranges::sentinel_t<R>;
+
+    int i     = 10;
+    int* iter = &i;
+    Sentinel s(Sent{0}, &pred);
+
+    bool b = iter == s;
+    assert(called);
+    assert(b);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.convert.pass.cpp
new file mode 100644
index 0000000..865a3d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.convert.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr sentinel(sentinel<!Const> s)
+//   requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
+
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+struct Sent {
+  int i;
+  constexpr Sent() = default;
+  constexpr Sent(int ii) : i(ii) {}
+  friend constexpr bool operator==(int* iter, const Sent& s) { return s.i > *iter; }
+};
+
+struct ConstSent {
+  int i;
+  constexpr ConstSent() = default;
+  constexpr ConstSent(int ii) : i(ii) {}
+  constexpr ConstSent(const Sent& s) : i(s.i) {}
+  friend constexpr bool operator==(int* iter, const ConstSent& s) { return s.i > *iter; }
+};
+
+struct Range : std::ranges::view_base {
+  int* begin() const;
+  Sent end();
+  ConstSent end() const;
+};
+
+struct Pred {
+  bool operator()(int i) const;
+};
+
+struct NonConvertConstSent {
+  int i;
+  constexpr NonConvertConstSent() = default;
+  constexpr NonConvertConstSent(int ii) : i(ii) {}
+  friend constexpr bool operator==(int* iter, const NonConvertConstSent& s) { return s.i > *iter; }
+};
+
+struct NonConvertConstSentRange : std::ranges::view_base {
+  int* begin() const;
+  Sent end();
+  NonConvertConstSent end() const;
+};
+
+// Test Constraint
+static_assert(std::is_constructible_v<std::ranges::sentinel_t<const std::ranges::take_while_view<Range, Pred>>,
+                                      std::ranges::sentinel_t<std::ranges::take_while_view<Range, Pred>>>);
+
+// !Const
+static_assert(!std::is_constructible_v<std::ranges::sentinel_t<std::ranges::take_while_view<Range, Pred>>,
+                                       std::ranges::sentinel_t<const std::ranges::take_while_view<Range, Pred>>>);
+
+// !convertible_to<sentinel_t<V>, sentinel_t<Base>>
+static_assert(!std::is_constructible_v<
+              std::ranges::sentinel_t<const std::ranges::take_while_view<NonConvertConstSentRange, Pred>>,
+              std::ranges::sentinel_t<std::ranges::take_while_view<NonConvertConstSentRange, Pred>>>);
+
+constexpr bool test() {
+  // base is init correctly
+  {
+    using R             = std::ranges::take_while_view<Range, bool (*)(int)>;
+    using Sentinel      = std::ranges::sentinel_t<R>;
+    using ConstSentinel = std::ranges::sentinel_t<const R>;
+    static_assert(!std::same_as<Sentinel, ConstSentinel>);
+
+    Sentinel s1(Sent{5}, nullptr);
+    ConstSentinel s2 = s1;
+    assert(s2.base().i == 5);
+  }
+
+  // pred is init correctly
+  {
+    bool called = false;
+    auto pred   = [&](int) {
+      called = true;
+      return false;
+    };
+
+    using R             = std::ranges::take_while_view<Range, decltype(pred)>;
+    using Sentinel      = std::ranges::sentinel_t<R>;
+    using ConstSentinel = std::ranges::sentinel_t<const R>;
+    static_assert(!std::same_as<Sentinel, ConstSentinel>);
+
+    int i     = 10;
+    int* iter = &i;
+    Sentinel s1(Sent{0}, &pred);
+    ConstSentinel s2 = s1;
+
+    [[maybe_unused]] bool b = iter == s2;
+    assert(called);
+  }
+
+  // LWG 3708 `take_while_view::sentinel`'s conversion constructor should move
+  {
+    struct MoveOnlyConvert {
+      int i;
+      constexpr MoveOnlyConvert() = default;
+      constexpr MoveOnlyConvert(Sent&& s) : i(s.i) { s.i = 0; }
+      constexpr bool operator==(int* iter) const { return i > *iter; }
+    };
+
+    struct Rng : std::ranges::view_base {
+      int* begin() const;
+      Sent end();
+      MoveOnlyConvert end() const;
+    };
+
+    using R             = std::ranges::take_while_view<Rng, Pred>;
+    using Sentinel      = std::ranges::sentinel_t<R>;
+    using ConstSentinel = std::ranges::sentinel_t<const R>;
+    static_assert(!std::same_as<Sentinel, ConstSentinel>);
+
+    Sentinel s1(Sent{5}, nullptr);
+    ConstSentinel s2 = s1;
+    assert(s2.base().i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..f90f0f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/ctor.default.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+
+#include <cassert>
+#include <ranges>
+
+struct Sent {
+  bool b; // deliberately uninitialised
+
+  friend constexpr bool operator==(int*, const Sent& s) { return s.b; }
+};
+
+struct Range : std::ranges::view_base {
+  int* begin() const;
+  Sent end();
+};
+
+constexpr bool test() {
+  {
+    using R        = std::ranges::take_while_view<Range, bool (*)(int)>;
+    using Sentinel = std::ranges::sentinel_t<R>;
+
+    Sentinel s1 = {};
+    assert(!s1.base().b);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/equality.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/equality.pass.cpp
new file mode 100644
index 0000000..3d5b835
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/sentinel/equality.pass.cpp
@@ -0,0 +1,204 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//  friend constexpr bool operator==(const iterator_t<Base>& x, const sentinel& y);
+//
+//  template<bool OtherConst = !Const>
+//    requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>>
+//  friend constexpr bool operator==(const iterator_t<maybe-const<OtherConst, V>>& x,
+//                                   const sentinel& y);
+
+#include <array>
+#include <cassert>
+#include <ranges>
+
+#include "../types.h"
+
+template <bool Const>
+struct Iter {
+  int* it_;
+
+  using value_type       = int;
+  using difference_type  = intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  constexpr decltype(auto) operator*() const { return *it_; }
+  constexpr Iter& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++it_; }
+};
+
+template <bool Const>
+struct Sent {
+  int* end_;
+
+  constexpr bool operator==(const Iter<Const>& i) const { return i.it_ == end_; }
+};
+
+template <bool Const>
+struct CrossComparableSent {
+  int* end_;
+
+  template <bool C>
+  constexpr bool operator==(const Iter<C>& i) const {
+    return i.it_ == end_;
+  }
+};
+
+template <template <bool> typename St>
+struct Range : IntBufferViewBase {
+  using IntBufferViewBase::IntBufferViewBase;
+  constexpr Iter<false> begin() { return Iter<false>{buffer_}; }
+  constexpr Iter<true> begin() const { return Iter<true>{buffer_}; }
+  constexpr St<false> end() { return St<false>{buffer_ + size_}; }
+  constexpr St<true> end() const { return St<true>{buffer_ + size_}; }
+};
+
+using R                = Range<Sent>;
+using CrossComparableR = Range<CrossComparableSent>;
+
+struct LessThan3 {
+  constexpr bool operator()(int i) const { return i < 3; }
+};
+
+// Test Constraint
+template <class I, class S>
+concept HasEqual = requires(const I i, const S s) { i == s; };
+
+using std::ranges::iterator_t;
+using std::ranges::sentinel_t;
+using std::ranges::take_while_view;
+
+static_assert(HasEqual<iterator_t<take_while_view<R, LessThan3>>, //
+                       sentinel_t<take_while_view<R, LessThan3>>>);
+
+static_assert(!HasEqual<iterator_t<const take_while_view<R, LessThan3>>, //
+                        sentinel_t<take_while_view<R, LessThan3>>>);
+
+static_assert(!HasEqual<iterator_t<take_while_view<R, LessThan3>>, //
+                        sentinel_t<const take_while_view<R, LessThan3>>>);
+
+static_assert(HasEqual<iterator_t<const take_while_view<R, LessThan3>>, //
+                       sentinel_t<const take_while_view<R, LessThan3>>>);
+
+static_assert(HasEqual<iterator_t<take_while_view<R, LessThan3>>, //
+                       sentinel_t<take_while_view<R, LessThan3>>>);
+
+static_assert(HasEqual<iterator_t<const take_while_view<CrossComparableR, LessThan3>>, //
+                       sentinel_t<take_while_view<CrossComparableR, LessThan3>>>);
+
+static_assert(HasEqual<iterator_t<take_while_view<CrossComparableR, LessThan3>>, //
+                       sentinel_t<const take_while_view<CrossComparableR, LessThan3>>>);
+
+static_assert(HasEqual<iterator_t<const take_while_view<CrossComparableR, LessThan3>>, //
+                       sentinel_t<const take_while_view<CrossComparableR, LessThan3>>>);
+
+template <class R, bool ConstIter, bool ConstSent>
+constexpr void testOne() {
+  auto getBegin = [](auto&& rng) {
+    if constexpr (ConstIter) {
+      return std::as_const(rng).begin();
+    } else {
+      return rng.begin();
+    }
+  };
+
+  auto getEnd = [](auto&& rng) {
+    if constexpr (ConstSent) {
+      return std::as_const(rng).end();
+    } else {
+      return rng.end();
+    }
+  };
+
+  // iter == sentinel.base
+  {
+    int buffer[] = {1};
+    R v{buffer};
+    std::ranges::take_while_view twv(v, LessThan3{});
+    auto iter = getBegin(twv);
+    auto st   = getEnd(twv);
+    ++iter;
+    assert(iter == st);
+  }
+
+  // iter != sentinel.base && pred(*iter)
+  {
+    int buffer[] = {1, 3, 4};
+    R v{buffer};
+    std::ranges::take_while_view twv(v, LessThan3{});
+    auto iter = getBegin(twv);
+    auto st   = getEnd(twv);
+    assert(iter != st);
+    ++iter;
+    assert(iter == st);
+  }
+
+  // iter != sentinel.base && !pred(*iter)
+  {
+    int buffer[] = {1, 2, 3, 4, 3, 2, 1};
+    R v{buffer};
+    std::ranges::take_while_view twv(v, LessThan3{});
+    auto iter = getBegin(twv);
+    auto sent = getEnd(twv);
+    assert(iter != sent);
+  }
+
+  // empty range
+  {
+    std::array<int, 0> arr;
+    R v{arr};
+    std::ranges::take_while_view twv(v, LessThan3{});
+    auto iter = getBegin(twv);
+    auto sent = getEnd(twv);
+    assert(iter == sent);
+  }
+}
+
+constexpr bool test() {
+  testOne<R, false, false>();
+  testOne<R, true, true>();
+  testOne<CrossComparableR, false, false>();
+  testOne<CrossComparableR, true, true>();
+
+  // LWG 3449 `take_view` and `take_while_view`'s `sentinel<false>` not comparable with their const iterator
+  testOne<CrossComparableR, true, false>();
+  testOne<CrossComparableR, false, true>();
+
+  // test std::invoke is used
+  {
+    struct Data {
+      bool b;
+    };
+
+    Data buffer[] = {{true}, {true}, {false}};
+    std::ranges::take_while_view twv(buffer, &Data::b);
+    auto it = twv.begin();
+    auto st = twv.end();
+    assert(it != st);
+
+    ++it;
+    assert(it != st);
+
+    ++it;
+    assert(it == st);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/types.h
new file mode 100644
index 0000000..b946190
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take.while/types.h
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TAKE_WHILE_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TAKE_WHILE_TYPES_H
+
+#include <array>
+#include <functional>
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+
+template <class T>
+struct BufferViewBase : std::ranges::view_base {
+  T* buffer_;
+  std::size_t size_;
+
+  template <std::size_t N>
+  constexpr BufferViewBase(T (&b)[N]) : buffer_(b), size_(N) {}
+
+  template <std::size_t N>
+  constexpr BufferViewBase(std::array<T, N>& arr) : buffer_(arr.data()), size_(N) {}
+};
+
+using IntBufferViewBase = BufferViewBase<int>;
+
+struct SimpleView : IntBufferViewBase {
+  using IntBufferViewBase::IntBufferViewBase;
+  constexpr int* begin() const { return buffer_; }
+  constexpr int* end() const { return buffer_ + size_; }
+};
+LIBCPP_STATIC_ASSERT(std::ranges::__simple_view<SimpleView>);
+
+struct ConstNotRange : IntBufferViewBase {
+  using IntBufferViewBase::IntBufferViewBase;
+  constexpr int* begin() { return buffer_; }
+  constexpr int* end() { return buffer_ + size_; }
+};
+static_assert(std::ranges::view<ConstNotRange>);
+static_assert(!std::ranges::range<const ConstNotRange>);
+
+struct NonSimple : IntBufferViewBase {
+  using IntBufferViewBase::IntBufferViewBase;
+  constexpr const int* begin() const { return buffer_; }
+  constexpr const int* end() const { return buffer_ + size_; }
+  constexpr int* begin() { return buffer_; }
+  constexpr int* end() { return buffer_ + size_; }
+};
+static_assert(std::ranges::view<NonSimple>);
+LIBCPP_STATIC_ASSERT(!std::ranges::__simple_view<NonSimple>);
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TAKE_WHILE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/adaptor.pass.cpp
new file mode 100644
index 0000000..9f4a563
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/adaptor.pass.cpp
@@ -0,0 +1,218 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::take
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <span>
+#include <string_view>
+#include <utility>
+#include "test_iterators.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct SizedView : std::ranges::view_base {
+  int* begin_ = nullptr;
+  int* end_ = nullptr;
+  constexpr SizedView(int* begin, int* end) : begin_(begin), end_(end) {}
+
+  constexpr auto begin() const { return forward_iterator<int*>(begin_); }
+  constexpr auto end() const { return sized_sentinel<forward_iterator<int*>>(forward_iterator<int*>(end_)); }
+};
+static_assert(std::ranges::forward_range<SizedView>);
+static_assert(std::ranges::sized_range<SizedView>);
+static_assert(std::ranges::view<SizedView>);
+
+template <class T>
+constexpr void test_small_range(const T& input) {
+  constexpr int N = 100;
+  auto size = std::ranges::size(input);
+
+  auto result = input | std::views::take(N);
+  assert(size < N);
+  assert(result.size() == size);
+}
+
+constexpr bool test() {
+  constexpr int N = 8;
+  int buf[N] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // Test that `std::views::take` is a range adaptor.
+  {
+    using SomeView = SizedView;
+
+    // Test `view | views::take`
+    {
+      SomeView view(buf, buf + N);
+      std::same_as<std::ranges::take_view<SomeView>> decltype(auto) result = view | std::views::take(3);
+      assert(result.base().begin_ == buf);
+      assert(result.base().end_ == buf + N);
+      assert(result.size() == 3);
+    }
+
+    // Test `adaptor | views::take`
+    {
+      SomeView view(buf, buf + N);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::transform(f) | std::views::take(3);
+
+      using Result = std::ranges::take_view<std::ranges::transform_view<SomeView, decltype(f)>>;
+      std::same_as<Result> decltype(auto) result = partial(view);
+      assert(result.base().base().begin_ == buf);
+      assert(result.base().base().end_ == buf + N);
+      assert(result.size() == 3);
+    }
+
+    // Test `views::take | adaptor`
+    {
+      SomeView view(buf, buf + N);
+      auto f = [](int i) { return i; };
+      auto const partial = std::views::take(3) | std::views::transform(f);
+
+      using Result = std::ranges::transform_view<std::ranges::take_view<SomeView>, decltype(f)>;
+      std::same_as<Result> decltype(auto) result = partial(view);
+      assert(result.base().base().begin_ == buf);
+      assert(result.base().base().end_ == buf + N);
+      assert(result.size() == 3);
+    }
+
+    // Check SFINAE friendliness
+    {
+      struct NotAView { };
+      static_assert(!std::is_invocable_v<decltype(std::views::take)>);
+      static_assert(!std::is_invocable_v<decltype(std::views::take), NotAView, int>);
+      static_assert( CanBePiped<SomeView&,   decltype(std::views::take(3))>);
+      static_assert( CanBePiped<int(&)[10],  decltype(std::views::take(3))>);
+      static_assert(!CanBePiped<int(&&)[10], decltype(std::views::take(3))>);
+      static_assert(!CanBePiped<NotAView,    decltype(std::views::take(3))>);
+
+      static_assert(!CanBePiped<SomeView&,   decltype(std::views::take(/*n=*/NotAView{}))>);
+    }
+  }
+
+  {
+    static_assert(std::same_as<decltype(std::views::take), decltype(std::ranges::views::take)>);
+  }
+
+  // `views::take(empty_view, n)` returns an `empty_view`.
+  {
+    using Result = std::ranges::empty_view<int>;
+    [[maybe_unused]] std::same_as<Result> decltype(auto) result = std::views::empty<int> | std::views::take(3);
+  }
+
+  // `views::take(span, n)` returns a `span`.
+  {
+    std::span<int> s(buf);
+    std::same_as<decltype(s)> decltype(auto) result = s | std::views::take(3);
+    assert(result.size() == 3);
+  }
+
+  // `views::take(span, n)` returns a `span` with a dynamic extent, regardless of the input `span`.
+  {
+    std::span<int, 8> s(buf);
+    std::same_as<std::span<int, std::dynamic_extent>> decltype(auto) result = s | std::views::take(3);
+    assert(result.size() == 3);
+  }
+
+  // `views::take(string_view, n)` returns a `string_view`.
+  {
+    {
+      std::string_view sv = "abcdef";
+      std::same_as<decltype(sv)> decltype(auto) result = sv | std::views::take(3);
+      assert(result.size() == 3);
+    }
+
+    {
+      std::u32string_view sv = U"abcdef";
+      std::same_as<decltype(sv)> decltype(auto) result = sv | std::views::take(3);
+      assert(result.size() == 3);
+    }
+  }
+
+  // `views::take(subrange, n)` returns a `subrange`.
+  {
+    auto subrange = std::ranges::subrange(buf, buf + N);
+    using Result = std::ranges::subrange<int*>;
+    std::same_as<Result> decltype(auto) result = subrange | std::views::take(3);
+    assert(result.size() == 3);
+  }
+
+  // `views::take(subrange, n)` doesn't return a `subrange` if it's not a random access range.
+  {
+    SizedView v(buf, buf + N);
+    auto subrange = std::ranges::subrange(v.begin(), v.end());
+
+    using Result = std::ranges::take_view<std::ranges::subrange<forward_iterator<int*>,
+        sized_sentinel<forward_iterator<int*>>>>;
+    std::same_as<Result> decltype(auto) result = subrange | std::views::take(3);
+    assert(result.size() == 3);
+  }
+
+  // `views::take(subrange, n)` returns a `subrange` with all default template arguments.
+  {
+    std::ranges::subrange<int*, sized_sentinel<int*>, std::ranges::subrange_kind::sized> subrange;
+
+    using Result = std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>;
+    [[maybe_unused]] std::same_as<Result> decltype(auto) result = subrange | std::views::take(3);
+  }
+
+  // `views::take(iota_view, n)` returns an `iota_view`.
+  {
+    auto iota = std::views::iota(1, 8);
+    // The second template argument of the resulting `iota_view` is different because it has to be able to hold
+    // the `range_difference_t` of the input `iota_view`.
+    using Result = std::ranges::iota_view<int, std::ranges::range_difference_t<decltype(iota)>>;
+    std::same_as<Result> decltype(auto) result = iota | std::views::take(3);
+    assert(result.size() == 3);
+  }
+
+  // When the size of the input range `s` is shorter than `n`, only `s` elements are taken.
+  {
+    test_small_range(std::span(buf));
+    test_small_range(std::string_view("abcdef"));
+    test_small_range(std::ranges::subrange(buf, buf + N));
+    test_small_range(std::views::iota(1, 8));
+  }
+
+  // Test that it's possible to call `std::views::take` with any single argument as long as the resulting closure is
+  // never invoked. There is no good use case for it, but it's valid.
+  {
+    struct X { };
+    [[maybe_unused]] auto partial = std::views::take(X{});
+  }
+
+  // Test when `subrange<Iter>` is not well formed
+  {
+    int input[] = {1, 2, 3};
+    using Iter  = cpp20_input_iterator<int*>;
+    using Sent  = sentinel_wrapper<Iter>;
+    std::ranges::subrange r{Iter{input}, Sent{Iter{input + 3}}};
+    auto tv = std::views::take(std::move(r), 1);
+    auto it                  = tv.begin();
+    assert(*it == 1);
+    ++it;
+    assert(it == tv.end());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/base.pass.cpp
new file mode 100644
index 0000000..a3ee21e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/base.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const& requires copy_constructible<V>;
+// constexpr V base() &&;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "types.h"
+
+constexpr bool hasLValueQualifiedBase(auto&& view) {
+    return requires { view.base(); };
+}
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::ranges::take_view<CopyableView> tv(CopyableView{buffer}, 0);
+    assert(tv.base().ptr_ == buffer);
+    assert(std::move(tv).base().ptr_ == buffer);
+
+    ASSERT_SAME_TYPE(decltype(tv.base()), CopyableView);
+    ASSERT_SAME_TYPE(decltype(std::move(tv).base()), CopyableView);
+    static_assert(hasLValueQualifiedBase(tv));
+  }
+
+  {
+    std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 1);
+    assert(std::move(tv).base().ptr_ == buffer);
+
+    ASSERT_SAME_TYPE(decltype(std::move(tv).base()), MoveOnlyView);
+    static_assert(!hasLValueQualifiedBase(tv));
+  }
+
+  {
+    const std::ranges::take_view<CopyableView> tv(CopyableView{buffer}, 2);
+    assert(tv.base().ptr_ == buffer);
+    assert(std::move(tv).base().ptr_ == buffer);
+
+    ASSERT_SAME_TYPE(decltype(tv.base()), CopyableView);
+    ASSERT_SAME_TYPE(decltype(std::move(tv).base()), CopyableView);
+    static_assert(hasLValueQualifiedBase(tv));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/begin.pass.cpp
new file mode 100644
index 0000000..ad5442f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/begin.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin() requires (!simple-view<V>);
+// constexpr auto begin() const requires range<const V>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+#include "types.h"
+
+struct NonCommonSimpleView : std::ranges::view_base {
+  int* begin() const;
+  sentinel_wrapper<int*> end() const;
+  size_t size() { return 0; }  // deliberately non-const
+};
+static_assert(std::ranges::sized_range<NonCommonSimpleView>);
+static_assert(!std::ranges::sized_range<const NonCommonSimpleView>);
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // sized_range && random_access_iterator
+  {
+    std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView(buffer), 4);
+    assert(tv.begin() == SizedRandomAccessView(buffer).begin());
+    ASSERT_SAME_TYPE(decltype(tv.begin()), RandomAccessIter);
+  }
+
+  {
+    const std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView(buffer), 4);
+    assert(tv.begin() == SizedRandomAccessView(buffer).begin());
+    ASSERT_SAME_TYPE(decltype(tv.begin()), RandomAccessIter);
+  }
+
+  // sized_range && !random_access_iterator
+  {
+    std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 4);
+    assert(tv.begin() == std::counted_iterator<ForwardIter>(ForwardIter(buffer), 4));
+    ASSERT_SAME_TYPE(decltype(tv.begin()), std::counted_iterator<ForwardIter>);
+  }
+
+  {
+    const std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 4);
+    assert(tv.begin() == std::counted_iterator<ForwardIter>(ForwardIter(buffer), 4));
+    ASSERT_SAME_TYPE(decltype(tv.begin()), std::counted_iterator<ForwardIter>);
+  }
+
+  // !sized_range
+  {
+    std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 4);
+    assert(tv.begin() == std::counted_iterator<int*>(buffer, 4));
+    ASSERT_SAME_TYPE(decltype(tv.begin()), std::counted_iterator<int*>);
+  }
+
+  {
+    const std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 4);
+    assert(tv.begin() == std::counted_iterator<int*>(buffer, 4));
+    ASSERT_SAME_TYPE(decltype(tv.begin()), std::counted_iterator<int*>);
+  }
+
+  // __simple_view<V> && sized_range<V> && !size_range<!V>
+  {
+    std::ranges::take_view<NonCommonSimpleView> tv{};
+    ASSERT_SAME_TYPE(decltype(tv.begin()), std::counted_iterator<int*>);
+    ASSERT_SAME_TYPE(decltype(std::as_const(tv).begin()), std::counted_iterator<int*>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..16e86ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/borrowing.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   inline constexpr bool enable_borrowed_range<take_view<T>> = enable_borrowed_range<T>;
+
+#include <ranges>
+
+#include "test_range.h"
+
+static_assert( std::ranges::borrowed_range<std::ranges::take_view<BorrowedView>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::take_view<NonBorrowedView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctad.compile.pass.cpp
new file mode 100644
index 0000000..039359a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctad.compile.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+//   take_view(R&&, range_difference_t<R>) -> take_view<views::all_t<R>>;
+
+#include <cassert>
+#include <concepts>
+#include <ranges>
+#include <utility>
+
+struct View : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+void testCTAD() {
+    View v;
+    Range r;
+    BorrowedRange br;
+
+    static_assert(std::same_as<
+        decltype(std::ranges::take_view(v, 0)),
+        std::ranges::take_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::take_view(std::move(v), 0)),
+        std::ranges::take_view<View>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::take_view(r, 0)),
+        std::ranges::take_view<std::ranges::ref_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::take_view(std::move(r), 0)),
+        std::ranges::take_view<std::ranges::owning_view<Range>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::take_view(br, 0)),
+        std::ranges::take_view<std::ranges::ref_view<BorrowedRange>>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::take_view(std::move(br), 0)),
+        std::ranges::take_view<std::ranges::owning_view<BorrowedRange>>
+    >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctor.default.pass.cpp
new file mode 100644
index 0000000..33071a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctor.default.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// take_view() requires default_initializable<V> = default;
+
+#include <ranges>
+#include <cassert>
+
+int buff[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+struct DefaultConstructible : std::ranges::view_base {
+  constexpr DefaultConstructible() : begin_(buff), end_(buff + 8) { }
+  constexpr int const* begin() const { return begin_; }
+  constexpr int const* end() const { return end_; }
+private:
+  int const* begin_;
+  int const* end_;
+};
+
+struct NonDefaultConstructible : std::ranges::view_base {
+  NonDefaultConstructible() = delete;
+  int* begin() const;
+  int* end() const;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::take_view<DefaultConstructible> tv;
+    assert(tv.begin() == buff);
+    assert(tv.size() == 0);
+  }
+
+  // Test SFINAE-friendliness
+  {
+    static_assert( std::is_default_constructible_v<std::ranges::take_view<DefaultConstructible>>);
+    static_assert(!std::is_default_constructible_v<std::ranges::take_view<NonDefaultConstructible>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctor.view_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctor.view_count.pass.cpp
new file mode 100644
index 0000000..63b936d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/ctor.view_count.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr take_view(V base, range_difference_t<V> count);
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    std::ranges::take_view<CopyableView> tv(CopyableView{buffer}, 0);
+    assert(tv.base().ptr_ == buffer);
+    assert(tv.begin() == tv.end()); // Checking we have correct size.
+  }
+
+  {
+    std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 1);
+    assert(std::move(tv).base().ptr_ == buffer);
+    assert(std::ranges::next(tv.begin(), 1) == tv.end()); // Checking we have correct size.
+  }
+
+  {
+    const std::ranges::take_view<CopyableView> tv(CopyableView{buffer}, 2);
+    assert(tv.base().ptr_ == buffer);
+    assert(std::ranges::next(tv.begin(), 2) == tv.end()); // Checking we have correct size.
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/end.pass.cpp
new file mode 100644
index 0000000..6cab05d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/end.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto end() requires (!simple-view<V>)
+// constexpr auto end() const requires range<const V>
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  // sized_range && random_access_iterator
+  {
+    std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView{buffer}, 0);
+    assert(tv.end() == std::ranges::next(tv.begin(), 0));
+    ASSERT_SAME_TYPE(decltype(tv.end()), RandomAccessIter);
+  }
+
+  {
+    const std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView{buffer}, 1);
+    assert(tv.end() == std::ranges::next(tv.begin(), 1));
+    ASSERT_SAME_TYPE(decltype(tv.end()), RandomAccessIter);
+  }
+
+  // sized_range && !random_access_iterator
+  {
+    std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 2);
+    assert(tv.end() == std::ranges::next(tv.begin(), 2));
+    ASSERT_SAME_TYPE(decltype(tv.end()), std::default_sentinel_t);
+  }
+
+  {
+    const std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 3);
+    assert(tv.end() == std::ranges::next(tv.begin(), 3));
+    ASSERT_SAME_TYPE(decltype(tv.end()), std::default_sentinel_t);
+  }
+
+  // !sized_range
+  {
+    std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 4);
+    assert(tv.end() == std::ranges::next(tv.begin(), 4));
+
+    // The <sentinel> type.
+    static_assert(!std::same_as<decltype(tv.end()), std::default_sentinel_t>);
+    static_assert(!std::same_as<decltype(tv.end()), int*>);
+  }
+
+  {
+    const std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 5);
+    assert(tv.end() == std::ranges::next(tv.begin(), 5));
+  }
+
+  // Just to cover the case where count == 8.
+  {
+    std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView{buffer}, 8);
+    assert(tv.end() == std::ranges::next(tv.begin(), 8));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..7d50038
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Range concept conformance tests for take_view.
+
+#include <ranges>
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+static_assert(std::ranges::input_range<std::ranges::take_view<test_view<cpp20_input_iterator>>>);
+static_assert(std::ranges::forward_range<std::ranges::take_view<test_view<forward_iterator>>>);
+static_assert(std::ranges::bidirectional_range<std::ranges::take_view<test_view<bidirectional_iterator>>>);
+static_assert(std::ranges::random_access_range<std::ranges::take_view<test_view<random_access_iterator>>>);
+static_assert(std::ranges::contiguous_range<std::ranges::take_view<test_view<contiguous_iterator>>>);
+
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/base.pass.cpp
new file mode 100644
index 0000000..c949eb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/base.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+// constexpr explicit sentinel(sentinel_t<Base> end);
+// constexpr sentinel(sentinel<!Const> s)
+//   requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+  {
+    std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView(buffer), 4);
+    std::same_as<sentinel_wrapper<int*>> auto sw1 = tv.end().base();
+    assert(base(sw1) == buffer + 8);
+    std::same_as<sentinel_wrapper<int*>> auto sw2 = std::as_const(tv).end().base();
+    assert(base(sw2) == buffer + 8);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/ctor.pass.cpp
new file mode 100644
index 0000000..9d1bdaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/ctor.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+// constexpr explicit sentinel(sentinel_t<Base> end);
+// constexpr sentinel(sentinel<!Const> s)
+//   requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    // Test the default ctor.
+    using TakeView = std::ranges::take_view<MoveOnlyView>;
+    using Sentinel = std::ranges::sentinel_t<TakeView>;
+    Sentinel s;
+    TakeView tv = TakeView(MoveOnlyView(buffer), 4);
+    assert(tv.begin() + 4 == s);
+  }
+
+  {
+    // Test the conversion from "sentinel" to "sentinel-to-const".
+    using TakeView = std::ranges::take_view<MoveOnlyView>;
+    using Sentinel = std::ranges::sentinel_t<TakeView>;
+    using ConstSentinel = std::ranges::sentinel_t<const TakeView>;
+    static_assert(std::is_convertible_v<Sentinel, ConstSentinel>);
+    TakeView tv = TakeView(MoveOnlyView(buffer), 4);
+    Sentinel s = tv.end();
+    ConstSentinel cs = s;
+    cs = s;  // test assignment also
+    assert(tv.begin() + 4 == s);
+    assert(tv.begin() + 4 == cs);
+    assert(std::as_const(tv).begin() + 4 == s);
+    assert(std::as_const(tv).begin() + 4 == cs);
+  }
+
+  {
+    // Test the constructor from "base-sentinel" to "sentinel".
+    using TakeView = std::ranges::take_view<MoveOnlyView>;
+    using Sentinel = std::ranges::sentinel_t<TakeView>;
+    sentinel_wrapper<int*> sw1 = MoveOnlyView(buffer).end();
+    static_assert( std::is_constructible_v<Sentinel, sentinel_wrapper<int*>>);
+    static_assert(!std::is_convertible_v<sentinel_wrapper<int*>, Sentinel>);
+    auto s = Sentinel(sw1);
+    std::same_as<sentinel_wrapper<int*>> auto sw2 = s.base();
+    assert(base(sw2) == base(sw1));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/eq.pass.cpp
new file mode 100644
index 0000000..eb265a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/sentinel/eq.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+// constexpr explicit sentinel(sentinel_t<Base> end);
+// constexpr sentinel(sentinel<!Const> s)
+//   requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    {
+      const std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 4);
+      assert(tv.end() == std::ranges::next(tv.begin(), 4));
+      assert(std::ranges::next(tv.begin(), 4) == tv.end());
+    }
+
+    {
+      std::ranges::take_view<MoveOnlyView> tv(MoveOnlyView{buffer}, 4);
+      assert(tv.end() == std::ranges::next(tv.begin(), 4));
+      assert(std::ranges::next(tv.begin(), 4) == tv.end());
+    }
+  }
+
+  {
+    std::ranges::take_view<MoveOnlyView> tvNonConst(MoveOnlyView{buffer}, 4);
+    const std::ranges::take_view<MoveOnlyView> tvConst(MoveOnlyView{buffer}, 4);
+    assert(tvNonConst.end() == std::ranges::next(tvConst.begin(), 4));
+    assert(std::ranges::next(tvConst.begin(), 4) == tvNonConst.end());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/size.pass.cpp
new file mode 100644
index 0000000..e498e1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/size.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() requires sized_range<V>
+// constexpr auto size() const requires sized_range<const V>
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+#include "types.h"
+
+template<class T>
+concept SizeEnabled = requires(const std::ranges::take_view<T>& tv) {
+  tv.size();
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    static_assert( SizeEnabled<SizedRandomAccessView>);
+    static_assert(!SizeEnabled<CopyableView>);
+  }
+
+  {
+    std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView{buffer}, 0);
+    assert(tv.size() == 0);
+  }
+
+  {
+    const std::ranges::take_view<SizedRandomAccessView> tv(SizedRandomAccessView{buffer}, 2);
+    assert(tv.size() == 2);
+  }
+
+  {
+    std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 4);
+    assert(tv.size() == 4);
+  }
+
+  {
+    const std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 6);
+    assert(tv.size() == 6);
+  }
+
+  {
+    std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 8);
+    assert(tv.size() == 8);
+  }
+  {
+    const std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 8);
+    assert(tv.size() == 8);
+  }
+
+  {
+    std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 10);
+    assert(tv.size() == 8);
+  }
+  {
+    const std::ranges::take_view<SizedForwardView> tv(SizedForwardView{buffer}, 10);
+    assert(tv.size() == 8);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/types.h
new file mode 100644
index 0000000..09549a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.take/types.h
@@ -0,0 +1,57 @@
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TAKE_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TAKE_TYPES_H
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+
+struct MoveOnlyView : std::ranges::view_base {
+  int *ptr_;
+
+  constexpr explicit MoveOnlyView(int* ptr) : ptr_(ptr) {}
+  MoveOnlyView(MoveOnlyView&&) = default;
+  MoveOnlyView& operator=(MoveOnlyView&&) = default;
+
+  constexpr int* begin() const {return ptr_;}
+  constexpr sentinel_wrapper<int*> end() const {return sentinel_wrapper<int*>{ptr_ + 8};}
+};
+static_assert( std::ranges::view<MoveOnlyView>);
+static_assert( std::ranges::contiguous_range<MoveOnlyView>);
+static_assert(!std::copyable<MoveOnlyView>);
+
+struct CopyableView : std::ranges::view_base {
+  int *ptr_;
+  constexpr explicit CopyableView(int* ptr) : ptr_(ptr) {}
+
+  constexpr int* begin() const {return ptr_;}
+  constexpr sentinel_wrapper<int*> end() const {return sentinel_wrapper<int*>{ptr_ + 8};}
+};
+static_assert(std::ranges::view<CopyableView>);
+static_assert(std::ranges::contiguous_range<CopyableView>);
+static_assert(std::copyable<CopyableView>);
+
+using ForwardIter = forward_iterator<int*>;
+struct SizedForwardView : std::ranges::view_base {
+  int *ptr_;
+  constexpr explicit SizedForwardView(int* ptr) : ptr_(ptr) {}
+  constexpr auto begin() const { return ForwardIter(ptr_); }
+  constexpr auto end() const { return sized_sentinel<ForwardIter>(ForwardIter(ptr_ + 8)); }
+};
+static_assert(std::ranges::view<SizedForwardView>);
+static_assert(std::ranges::forward_range<SizedForwardView>);
+static_assert(std::ranges::sized_range<SizedForwardView>);
+
+using RandomAccessIter = random_access_iterator<int*>;
+struct SizedRandomAccessView : std::ranges::view_base {
+  int *ptr_;
+  constexpr explicit SizedRandomAccessView(int* ptr) : ptr_(ptr) {}
+  constexpr auto begin() const { return RandomAccessIter(ptr_); }
+  constexpr auto end() const { return sized_sentinel<RandomAccessIter>(RandomAccessIter(ptr_ + 8)); }
+};
+static_assert(std::ranges::view<SizedRandomAccessView>);
+static_assert(std::ranges::random_access_range<SizedRandomAccessView>);
+static_assert(std::ranges::sized_range<SizedRandomAccessView>);
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TAKE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/adaptor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/adaptor.pass.cpp
new file mode 100644
index 0000000..59dd85b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/adaptor.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::transform
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "types.h"
+
+template <class View, class T>
+concept CanBePiped = requires (View&& view, T&& t) {
+  { std::forward<View>(view) | std::forward<T>(t) };
+};
+
+struct NonCopyableFunction {
+  NonCopyableFunction(NonCopyableFunction const&) = delete;
+  template <class T>
+  constexpr T operator()(T x) const { return x; }
+};
+
+constexpr bool test() {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+
+  // Test `views::transform(f)(v)`
+  {
+    {
+      using Result = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+      std::same_as<Result> auto result = std::views::transform(PlusOne{})(MoveOnlyView{buff});
+      assert(result.begin().base() == buff);
+      assert(result[0] == 1);
+      assert(result[1] == 2);
+      assert(result[2] == 3);
+    }
+    {
+      auto const partial = std::views::transform(PlusOne{});
+      using Result = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+      std::same_as<Result> auto result = partial(MoveOnlyView{buff});
+      assert(result.begin().base() == buff);
+      assert(result[0] == 1);
+      assert(result[1] == 2);
+      assert(result[2] == 3);
+    }
+  }
+
+  // Test `v | views::transform(f)`
+  {
+    {
+      using Result = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+      std::same_as<Result> auto result = MoveOnlyView{buff} | std::views::transform(PlusOne{});
+      assert(result.begin().base() == buff);
+      assert(result[0] == 1);
+      assert(result[1] == 2);
+      assert(result[2] == 3);
+    }
+    {
+      auto const partial = std::views::transform(PlusOne{});
+      using Result = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+      std::same_as<Result> auto result = MoveOnlyView{buff} | partial;
+      assert(result.begin().base() == buff);
+      assert(result[0] == 1);
+      assert(result[1] == 2);
+      assert(result[2] == 3);
+    }
+  }
+
+  // Test `views::transform(v, f)`
+  {
+    using Result = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+    std::same_as<Result> auto result = std::views::transform(MoveOnlyView{buff}, PlusOne{});
+    assert(result.begin().base() == buff);
+    assert(result[0] == 1);
+    assert(result[1] == 2);
+    assert(result[2] == 3);
+  }
+
+  // Test that one can call std::views::transform with arbitrary stuff, as long as we
+  // don't try to actually complete the call by passing it a range.
+  //
+  // That makes no sense and we can't do anything with the result, but it's valid.
+  {
+    struct X { };
+    auto partial = std::views::transform(X{});
+    (void)partial;
+  }
+
+  // Test `adaptor | views::transform(f)`
+  {
+    {
+      using Result = std::ranges::transform_view<std::ranges::transform_view<MoveOnlyView, PlusOne>, TimesTwo>;
+      std::same_as<Result> auto result = MoveOnlyView{buff} | std::views::transform(PlusOne{}) | std::views::transform(TimesTwo{});
+      assert(result.begin().base().base() == buff);
+      assert(result[0] == 2);
+      assert(result[1] == 4);
+      assert(result[2] == 6);
+    }
+    {
+      auto const partial = std::views::transform(PlusOne{}) | std::views::transform(TimesTwo{});
+      using Result = std::ranges::transform_view<std::ranges::transform_view<MoveOnlyView, PlusOne>, TimesTwo>;
+      std::same_as<Result> auto result = MoveOnlyView{buff} | partial;
+      assert(result.begin().base().base() == buff);
+      assert(result[0] == 2);
+      assert(result[1] == 4);
+      assert(result[2] == 6);
+    }
+  }
+
+  // Test SFINAE friendliness
+  {
+    struct NotAView { };
+    struct NotInvocable { };
+
+    static_assert(!CanBePiped<MoveOnlyView, decltype(std::views::transform)>);
+    static_assert( CanBePiped<MoveOnlyView, decltype(std::views::transform(PlusOne{}))>);
+    static_assert(!CanBePiped<NotAView,       decltype(std::views::transform(PlusOne{}))>);
+    static_assert(!CanBePiped<MoveOnlyView, decltype(std::views::transform(NotInvocable{}))>);
+
+    static_assert(!std::is_invocable_v<decltype(std::views::transform)>);
+    static_assert(!std::is_invocable_v<decltype(std::views::transform), PlusOne, MoveOnlyView>);
+    static_assert( std::is_invocable_v<decltype(std::views::transform), MoveOnlyView, PlusOne>);
+    static_assert(!std::is_invocable_v<decltype(std::views::transform), MoveOnlyView, PlusOne, PlusOne>);
+    static_assert(!std::is_invocable_v<decltype(std::views::transform), NonCopyableFunction>);
+  }
+
+  {
+    static_assert(std::is_same_v<decltype(std::ranges::views::transform), decltype(std::views::transform)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/base.pass.cpp
new file mode 100644
index 0000000..496f68f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/base.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr V base() const& requires copy_constructible<V>
+// constexpr V base() &&
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  {
+    std::ranges::transform_view<MoveOnlyView, PlusOne> transformView;
+    MoveOnlyView base = std::move(transformView).base();
+    ASSERT_SAME_TYPE(MoveOnlyView, decltype(std::move(transformView).base()));
+    assert(std::ranges::begin(base) == globalBuff);
+  }
+
+  {
+    std::ranges::transform_view<CopyableView, PlusOne> transformView;
+    CopyableView base1 = transformView.base();
+    ASSERT_SAME_TYPE(CopyableView, decltype(transformView.base()));
+    assert(std::ranges::begin(base1) == globalBuff);
+
+    CopyableView base2 = std::move(transformView).base();
+    ASSERT_SAME_TYPE(CopyableView, decltype(std::move(transformView).base()));
+    assert(std::ranges::begin(base2) == globalBuff);
+  }
+
+  {
+    const std::ranges::transform_view<CopyableView, PlusOne> transformView;
+    const CopyableView base1 = transformView.base();
+    ASSERT_SAME_TYPE(CopyableView, decltype(transformView.base()));
+    assert(std::ranges::begin(base1) == globalBuff);
+
+    const CopyableView base2 = std::move(transformView).base();
+    ASSERT_SAME_TYPE(CopyableView, decltype(std::move(transformView).base()));
+    assert(std::ranges::begin(base2) == globalBuff);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/begin.pass.cpp
new file mode 100644
index 0000000..a3ddbf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/begin.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator<false> begin();
+// constexpr iterator<true> begin() const
+//   requires range<const V> &&
+//            regular_invocable<const F&, range_reference_t<const V>>;
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T>
+concept BeginInvocable = requires(T t) { t.begin(); };
+
+constexpr bool test() {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+
+  {
+    std::ranges::transform_view transformView(MoveOnlyView{buff}, PlusOneMutable{});
+    assert(transformView.begin().base() == buff);
+    assert(*transformView.begin() == 1);
+  }
+
+  {
+    std::ranges::transform_view transformView(ForwardView{buff}, PlusOneMutable{});
+    assert(base(transformView.begin().base()) == buff);
+    assert(*transformView.begin() == 1);
+  }
+
+  {
+    std::ranges::transform_view transformView(InputView{buff}, PlusOneMutable{});
+    assert(base(transformView.begin().base()) == buff);
+    assert(*transformView.begin() == 1);
+  }
+
+  {
+    const std::ranges::transform_view transformView(MoveOnlyView{buff}, PlusOne{});
+    assert(*transformView.begin() == 1);
+  }
+
+  static_assert(!BeginInvocable<const std::ranges::transform_view<MoveOnlyView, PlusOneMutable>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctad.compile.pass.cpp
new file mode 100644
index 0000000..92b5291
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctad.compile.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R, class F>
+//   transform_view(R&&, F) -> transform_view<views::all_t<R>, F>;
+
+#include <cassert>
+#include <concepts>
+#include <ranges>
+#include <utility>
+
+struct PlusOne {
+    int operator()(int x) const;
+};
+
+struct View : std::ranges::view_base {
+  int *begin() const;
+  int *end() const;
+};
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+void testCTAD() {
+    View v;
+    Range r;
+    BorrowedRange br;
+    PlusOne f;
+
+    static_assert(std::same_as<
+        decltype(std::ranges::transform_view(v, f)),
+        std::ranges::transform_view<View, PlusOne>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::transform_view(std::move(v), f)),
+        std::ranges::transform_view<View, PlusOne>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::transform_view(r, f)),
+        std::ranges::transform_view<std::ranges::ref_view<Range>, PlusOne>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::transform_view(std::move(r), f)),
+        std::ranges::transform_view<std::ranges::owning_view<Range>, PlusOne>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::transform_view(br, f)),
+        std::ranges::transform_view<std::ranges::ref_view<BorrowedRange>, PlusOne>
+    >);
+    static_assert(std::same_as<
+        decltype(std::ranges::transform_view(std::move(br), f)),
+        std::ranges::transform_view<std::ranges::owning_view<BorrowedRange>, PlusOne>
+    >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctor.default.pass.cpp
new file mode 100644
index 0000000..3de4f03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctor.default.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view() requires std::default_initializable<V> &&
+//                           std::default_initializable<F> = default;
+
+#include <ranges>
+
+#include <cassert>
+#include <type_traits>
+
+constexpr int buff[] = {1, 2, 3};
+
+struct DefaultConstructibleView : std::ranges::view_base {
+  constexpr DefaultConstructibleView() : begin_(buff), end_(buff + 3) { }
+  constexpr int const* begin() const { return begin_; }
+  constexpr int const* end() const { return end_; }
+private:
+  int const* begin_;
+  int const* end_;
+};
+
+struct DefaultConstructibleFunction {
+  int state_;
+  constexpr DefaultConstructibleFunction() : state_(100) { }
+  constexpr int operator()(int i) const { return i + state_; }
+};
+
+struct NoDefaultCtrView : std::ranges::view_base {
+  NoDefaultCtrView() = delete;
+  int* begin() const;
+  int* end() const;
+};
+
+struct NoDefaultFunction {
+  NoDefaultFunction() = delete;
+  constexpr int operator()(int i) const;
+};
+
+constexpr bool test() {
+  {
+    std::ranges::transform_view<DefaultConstructibleView, DefaultConstructibleFunction> view;
+    assert(view.size() == 3);
+    assert(view[0] == 101);
+    assert(view[1] == 102);
+    assert(view[2] == 103);
+  }
+
+  {
+    std::ranges::transform_view<DefaultConstructibleView, DefaultConstructibleFunction> view = {};
+    assert(view.size() == 3);
+    assert(view[0] == 101);
+    assert(view[1] == 102);
+    assert(view[2] == 103);
+  }
+
+  static_assert(!std::is_default_constructible_v<std::ranges::transform_view<NoDefaultCtrView,            DefaultConstructibleFunction>>);
+  static_assert(!std::is_default_constructible_v<std::ranges::transform_view<DefaultConstructibleView, NoDefaultFunction>>);
+  static_assert(!std::is_default_constructible_v<std::ranges::transform_view<NoDefaultCtrView,            NoDefaultFunction>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctor.view_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctor.view_function.pass.cpp
new file mode 100644
index 0000000..7ce0426
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/ctor.view_function.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr transform_view(View, F);
+
+#include <ranges>
+
+#include <cassert>
+
+struct Range : std::ranges::view_base {
+  constexpr explicit Range(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr int* begin() const { return begin_; }
+  constexpr int* end() const { return end_; }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+struct F {
+  constexpr int operator()(int i) const { return i + 100; }
+};
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    Range range(buff, buff + 8);
+    F f;
+    std::ranges::transform_view<Range, F> view(range, f);
+    assert(view[0] == 101);
+    assert(view[1] == 102);
+    // ...
+    assert(view[7] == 108);
+  }
+
+  {
+    Range range(buff, buff + 8);
+    F f;
+    std::ranges::transform_view<Range, F> view = {range, f};
+    assert(view[0] == 101);
+    assert(view[1] == 102);
+    // ...
+    assert(view[7] == 108);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/end.pass.cpp
new file mode 100644
index 0000000..bfa9e64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/end.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr sentinel<false> end();
+// constexpr iterator<false> end() requires common_range<V>;
+// constexpr sentinel<true> end() const
+//   requires range<const V> &&
+//            regular_invocable<const F&, range_reference_t<const V>>;
+// constexpr iterator<true> end() const
+//   requires common_range<const V> &&
+//            regular_invocable<const F&, range_reference_t<const V>>;
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T>
+concept HasConstQualifiedEnd = requires(const T& t) { t.end(); };
+
+constexpr bool test() {
+  {
+    using TransformView = std::ranges::transform_view<ForwardView, PlusOneMutable>;
+    static_assert(std::ranges::common_range<TransformView>);
+    TransformView tv;
+    auto it = tv.end();
+    using It = decltype(it);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), const forward_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), forward_iterator<int*>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), const forward_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), const forward_iterator<int*>&);
+    assert(base(it.base()) == globalBuff + 8);
+    assert(base(std::move(it).base()) == globalBuff + 8);
+    static_assert(!HasConstQualifiedEnd<TransformView>);
+  }
+  {
+    using TransformView = std::ranges::transform_view<InputView, PlusOneMutable>;
+    static_assert(!std::ranges::common_range<TransformView>);
+    TransformView tv;
+    auto sent = tv.end();
+    using Sent = decltype(sent);
+    ASSERT_SAME_TYPE(decltype(static_cast<Sent&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<Sent&&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const Sent&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const Sent&&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    assert(base(base(sent.base())) == globalBuff + 8);
+    assert(base(base(std::move(sent).base())) == globalBuff + 8);
+    static_assert(!HasConstQualifiedEnd<TransformView>);
+  }
+  {
+    using TransformView = std::ranges::transform_view<InputView, PlusOne>;
+    static_assert(!std::ranges::common_range<TransformView>);
+    TransformView tv;
+    auto sent = tv.end();
+    using Sent = decltype(sent);
+    ASSERT_SAME_TYPE(decltype(static_cast<Sent&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<Sent&&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const Sent&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const Sent&&>(sent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    assert(base(base(sent.base())) == globalBuff + 8);
+    assert(base(base(std::move(sent).base())) == globalBuff + 8);
+
+    auto csent = std::as_const(tv).end();
+    using CSent = decltype(csent);
+    ASSERT_SAME_TYPE(decltype(static_cast<CSent&>(csent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<CSent&&>(csent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const CSent&>(csent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const CSent&&>(csent).base()), sentinel_wrapper<cpp20_input_iterator<int*>>);
+    assert(base(base(csent.base())) == globalBuff + 8);
+    assert(base(base(std::move(csent).base())) == globalBuff + 8);
+  }
+  {
+    using TransformView = std::ranges::transform_view<MoveOnlyView, PlusOneMutable>;
+    static_assert(std::ranges::common_range<TransformView>);
+    TransformView tv;
+    auto it = tv.end();
+    using It = decltype(it);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), int*);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), int* const&);
+    assert(base(it.base()) == globalBuff + 8);
+    assert(base(std::move(it).base()) == globalBuff + 8);
+    static_assert(!HasConstQualifiedEnd<TransformView>);
+  }
+  {
+    using TransformView = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+    static_assert(std::ranges::common_range<TransformView>);
+    TransformView tv;
+    auto it = tv.end();
+    using It = decltype(it);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), int*);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), int* const&);
+    assert(base(it.base()) == globalBuff + 8);
+    assert(base(std::move(it).base()) == globalBuff + 8);
+
+    auto csent = std::as_const(tv).end();
+    using CSent = decltype(csent);
+    ASSERT_SAME_TYPE(decltype(static_cast<CSent&>(csent).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<CSent&&>(csent).base()), int*);
+    ASSERT_SAME_TYPE(decltype(static_cast<const CSent&>(csent).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<const CSent&&>(csent).base()), int* const&);
+    assert(base(base(csent.base())) == globalBuff + 8);
+    assert(base(base(std::move(csent).base())) == globalBuff + 8);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/general.pass.cpp
new file mode 100644
index 0000000..f519066
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/general.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how transform_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+#include <ranges>
+
+#include <cctype>
+#include <functional>
+#include <list>
+#include <numeric>
+#include <string>
+#include <vector>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "types.h"
+
+template<class T, class F>
+concept ValidTransformView = requires { typename std::ranges::transform_view<T, F>; };
+
+struct BadFunction { };
+static_assert( ValidTransformView<MoveOnlyView, PlusOne>);
+static_assert(!ValidTransformView<Range, PlusOne>);
+static_assert(!ValidTransformView<MoveOnlyView, BadFunction>);
+
+template<std::ranges::range R>
+auto toUpper(R range) {
+  return std::ranges::transform_view(range, [](char c) { return std::toupper(c); });
+}
+
+template<class E1, class E2, size_t N, class Join = std::plus<E1>>
+auto joinArrays(E1 (&a)[N], E2 (&b)[N], Join join = Join()) {
+  return std::ranges::transform_view(a, [&a, &b, join](auto& x) {
+    auto idx = (&x) - a;
+    return join(x, b[idx]);
+  });
+}
+
+struct NonConstView : std::ranges::view_base {
+  explicit NonConstView(int *b, int *e) : b_(b), e_(e) {}
+  const int *begin() { return b_; }  // deliberately non-const
+  const int *end() { return e_; }    // deliberately non-const
+  const int *b_;
+  const int *e_;
+};
+
+int main(int, char**) {
+  {
+    std::vector<int> vec = {1, 2, 3, 4};
+    auto transformed = std::ranges::transform_view(vec, [](int x) { return x + 42; });
+    int expected[] = {43, 44, 45, 46};
+    assert(std::equal(transformed.begin(), transformed.end(), expected, expected + 4));
+    const auto& ct = transformed;
+    assert(std::equal(ct.begin(), ct.end(), expected, expected + 4));
+  }
+
+  {
+    // Test a view type that is not const-iterable.
+    int a[] = {1, 2, 3, 4};
+    auto transformed = NonConstView(a, a + 4) | std::views::transform([](int x) { return x + 42; });
+    int expected[4] = {43, 44, 45, 46};
+    assert(std::equal(transformed.begin(), transformed.end(), expected, expected + 4));
+  }
+
+  {
+    int a[4] = {1, 2, 3, 4};
+    int b[4] = {4, 3, 2, 1};
+    auto out = joinArrays(a, b);
+    int check[4] = {5, 5, 5, 5};
+    assert(std::equal(out.begin(), out.end(), check, check + 4));
+  }
+
+  {
+    std::string_view str = "Hello, World.";
+    auto upp = toUpper(str);
+    std::string_view check = "HELLO, WORLD.";
+    assert(std::equal(upp.begin(), upp.end(), check.begin(), check.end()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/arithmetic.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/arithmetic.pass.cpp
new file mode 100644
index 0000000..3b2b738
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/arithmetic.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::operator{++,--,+=,-=}
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  std::ranges::transform_view<MoveOnlyView, PlusOne> transformView;
+  auto iter = std::move(transformView).begin();
+  assert((++iter).base() == globalBuff + 1);
+
+  assert((iter++).base() == globalBuff + 1);
+  assert(iter.base() == globalBuff + 2);
+
+  assert((--iter).base() == globalBuff + 1);
+  assert((iter--).base() == globalBuff + 1);
+  assert(iter.base() == globalBuff);
+
+  // Check that decltype(InputIter++) == void.
+  ASSERT_SAME_TYPE(decltype(
+    std::declval<std::ranges::iterator_t<std::ranges::transform_view<InputView, PlusOne>>>()++),
+    void);
+
+  assert((iter += 4).base() == globalBuff + 4);
+  assert((iter -= 3).base() == globalBuff + 1);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/base.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/base.pass.cpp
new file mode 100644
index 0000000..02a93f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/base.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::base
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    using TransformView = std::ranges::transform_view<MoveOnlyView, PlusOneMutable>;
+    TransformView tv;
+    auto it = tv.begin();
+    using It = decltype(it);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), int*);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), int* const&);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), int* const&);
+    ASSERT_NOEXCEPT(it.base());
+    assert(base(it.base()) == globalBuff);
+    assert(base(std::move(it).base()) == globalBuff);
+  }
+  {
+    using TransformView = std::ranges::transform_view<InputView, PlusOneMutable>;
+    TransformView tv;
+    auto it = tv.begin();
+    using It = decltype(it);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&>(it).base()), const cpp20_input_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(static_cast<It&&>(it).base()), cpp20_input_iterator<int*>);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&>(it).base()), const cpp20_input_iterator<int*>&);
+    ASSERT_SAME_TYPE(decltype(static_cast<const It&&>(it).base()), const cpp20_input_iterator<int*>&);
+    ASSERT_NOEXCEPT(it.base());
+    assert(base(it.base()) == globalBuff);
+    assert(base(std::move(it).base()) == globalBuff);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/compare.pass.cpp
new file mode 100644
index 0000000..7077cf4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/compare.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::operator{<,>,<=,>=,==,!=,<=>}
+
+#include <ranges>
+#include <compare>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    // Test a new-school iterator with operator<=>; the transform iterator should also have operator<=>.
+    using It = three_way_contiguous_iterator<int*>;
+    static_assert(std::three_way_comparable<It>);
+    using R = std::ranges::transform_view<std::ranges::subrange<It>, PlusOne>;
+    static_assert(std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    int a[] = {1,2,3};
+    std::same_as<R> auto r = std::ranges::subrange<It>(It(a), It(a+3)) | std::views::transform(PlusOne());
+    auto iter1 = r.begin();
+    auto iter2 = iter1 + 1;
+
+    assert(!(iter1 < iter1));  assert(iter1 < iter2);     assert(!(iter2 < iter1));
+    assert(iter1 <= iter1);    assert(iter1 <= iter2);    assert(!(iter2 <= iter1));
+    assert(!(iter1 > iter1));  assert(!(iter1 > iter2));  assert(iter2 > iter1);
+    assert(iter1 >= iter1);    assert(!(iter1 >= iter2)); assert(iter2 >= iter1);
+    assert(iter1 == iter1);    assert(!(iter1 == iter2)); assert(iter2 == iter2);
+    assert(!(iter1 != iter1)); assert(iter1 != iter2);    assert(!(iter2 != iter2));
+
+    assert((iter1 <=> iter2) == std::strong_ordering::less);
+    assert((iter1 <=> iter1) == std::strong_ordering::equal);
+    assert((iter2 <=> iter1) == std::strong_ordering::greater);
+  }
+
+  {
+    // Test an old-school iterator with no operator<=>; the transform iterator shouldn't have operator<=> either.
+    using It = random_access_iterator<int*>;
+    static_assert(!std::three_way_comparable<It>);
+    using R = std::ranges::transform_view<std::ranges::subrange<It>, PlusOne>;
+    static_assert(!std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    int a[] = {1,2,3};
+    std::same_as<R> auto r = std::ranges::subrange<It>(It(a), It(a+3)) | std::views::transform(PlusOne());
+    auto iter1 = r.begin();
+    auto iter2 = iter1 + 1;
+
+    assert(!(iter1 < iter1));  assert(iter1 < iter2);     assert(!(iter2 < iter1));
+    assert(iter1 <= iter1);    assert(iter1 <= iter2);    assert(!(iter2 <= iter1));
+    assert(!(iter1 > iter1));  assert(!(iter1 > iter2));  assert(iter2 > iter1);
+    assert(iter1 >= iter1);    assert(!(iter1 >= iter2)); assert(iter2 >= iter1);
+    assert(iter1 == iter1);    assert(!(iter1 == iter2)); assert(iter2 == iter2);
+    assert(!(iter1 != iter1)); assert(iter1 != iter2);    assert(!(iter2 != iter2));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/ctor.pass.cpp
new file mode 100644
index 0000000..a27a847
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/ctor.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::transform_view::<iterator>();
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+struct NoDefaultInit {
+    typedef std::random_access_iterator_tag iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef NoDefaultInit                   self;
+
+    NoDefaultInit(int*);
+
+    reference operator*() const;
+    pointer operator->() const;
+    auto operator<=>(const self&) const = default;
+    bool operator==(int *) const;
+
+    self& operator++();
+    self operator++(int);
+
+    self& operator--();
+    self operator--(int);
+
+    self& operator+=(difference_type n);
+    self operator+(difference_type n) const;
+    friend self operator+(difference_type n, self x);
+
+    self& operator-=(difference_type n);
+    self operator-(difference_type n) const;
+    difference_type operator-(const self&) const;
+
+    reference operator[](difference_type n) const;
+};
+
+struct IterNoDefaultInitView : std::ranges::view_base {
+  NoDefaultInit begin() const;
+  int *end() const;
+  NoDefaultInit begin();
+  int *end();
+};
+
+constexpr bool test() {
+  std::ranges::transform_view<MoveOnlyView, PlusOne> transformView;
+  auto iter = std::move(transformView).begin();
+  std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOne>> i2(iter);
+  (void)i2;
+  std::ranges::iterator_t<const std::ranges::transform_view<MoveOnlyView, PlusOne>> constIter(iter);
+  (void)constIter;
+
+
+  static_assert( std::default_initializable<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOne>>>);
+  static_assert(!std::default_initializable<std::ranges::iterator_t<std::ranges::transform_view<IterNoDefaultInitView, PlusOne>>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/deref.pass.cpp
new file mode 100644
index 0000000..06eb91d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/deref.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::operator*
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+int main(int, char**) {
+  {
+    int buff[] = {0, 1, 2, 3, 4, 5, 6, 7};
+    using View = std::ranges::transform_view<MoveOnlyView, PlusOne>;
+    View transformView(MoveOnlyView{buff}, PlusOne{});
+    assert(*transformView.begin() == 1);
+    ASSERT_NOT_NOEXCEPT(*std::declval<std::ranges::iterator_t<View>>());
+    ASSERT_SAME_TYPE(int, decltype(*std::declval<View>().begin()));
+  }
+  {
+    int buff[] = {0, 1, 2, 3, 4, 5, 6, 7};
+    using View = std::ranges::transform_view<MoveOnlyView, PlusOneMutable>;
+    View transformView(MoveOnlyView{buff}, PlusOneMutable{});
+    assert(*transformView.begin() == 1);
+    ASSERT_NOT_NOEXCEPT(*std::declval<std::ranges::iterator_t<View>>());
+    ASSERT_SAME_TYPE(int, decltype(*std::declval<View>().begin()));
+  }
+  {
+    int buff[] = {0, 1, 2, 3, 4, 5, 6, 7};
+    using View = std::ranges::transform_view<MoveOnlyView, PlusOneNoexcept>;
+    View transformView(MoveOnlyView{buff}, PlusOneNoexcept{});
+    assert(*transformView.begin() == 1);
+    LIBCPP_ASSERT_NOEXCEPT(*std::declval<std::ranges::iterator_t<View>>());
+    ASSERT_SAME_TYPE(int, decltype(*std::declval<View>().begin()));
+  }
+  {
+    int buff[] = {0, 1, 2, 3, 4, 5, 6, 7};
+    using View = std::ranges::transform_view<MoveOnlyView, Increment>;
+    View transformView(MoveOnlyView{buff}, Increment{});
+    assert(*transformView.begin() == 1);
+    ASSERT_NOT_NOEXCEPT(*std::declval<std::ranges::iterator_t<View>>());
+    ASSERT_SAME_TYPE(int&, decltype(*std::declval<View>().begin()));
+  }
+  {
+    int buff[] = {0, 1, 2, 3, 4, 5, 6, 7};
+    using View = std::ranges::transform_view<MoveOnlyView, IncrementRvalueRef>;
+    View transformView(MoveOnlyView{buff}, IncrementRvalueRef{});
+    assert(*transformView.begin() == 1);
+    ASSERT_NOT_NOEXCEPT(*std::declval<std::ranges::iterator_t<View>>());
+    ASSERT_SAME_TYPE(int&&, decltype(*std::declval<View>().begin()));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/iter_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/iter_move.pass.cpp
new file mode 100644
index 0000000..ea1e4b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/iter_move.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr decltype(auto) iter_move(const iterator& i)
+//    noexcept(noexcept(invoke(i.parent_->fun_, *i.current_)))
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+
+  {
+    std::ranges::transform_view transformView(MoveOnlyView{buff}, PlusOneMutable{});
+    auto iter = transformView.begin();
+    ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(iter));
+
+    assert(std::ranges::iter_move(iter) == 1);
+    assert(std::ranges::iter_move(iter + 2) == 3);
+
+    ASSERT_SAME_TYPE(int, decltype(std::ranges::iter_move(iter)));
+    ASSERT_SAME_TYPE(int, decltype(std::ranges::iter_move(std::move(iter))));
+  }
+
+  {
+    LIBCPP_ASSERT_NOEXCEPT(std::ranges::iter_move(
+      std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneNoexcept>>&>()));
+    ASSERT_NOT_NOEXCEPT(std::ranges::iter_move(
+      std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneMutable>>&>()));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/plus_minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/plus_minus.pass.cpp
new file mode 100644
index 0000000..284fb41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/plus_minus.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::operator{+,-}
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  std::ranges::transform_view<MoveOnlyView, PlusOneMutable> transformView1;
+  auto iter1 = std::move(transformView1).begin();
+  std::ranges::transform_view<MoveOnlyView, PlusOneMutable> transformView2;
+  [[maybe_unused]] auto iter2 = std::move(transformView2).begin();
+  iter1 += 4;
+  assert((iter1 + 1).base() == globalBuff + 5);
+  assert((1 + iter1).base() == globalBuff + 5);
+  assert((iter1 - 1).base() == globalBuff + 3);
+  LIBCPP_ASSERT(iter1 - iter2 == 4);
+  assert((iter1 + 2) - 2 == iter1);
+  assert((iter1 - 2) + 2 == iter1);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/requirements.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/requirements.compile.pass.cpp
new file mode 100644
index 0000000..c4fd7c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/requirements.compile.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// The requirements for transform_view::<iterator>'s members.
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+static_assert(std::ranges::bidirectional_range<std::ranges::transform_view<BidirectionalView, PlusOne>>);
+static_assert(!std::ranges::bidirectional_range<std::ranges::transform_view<ForwardView, PlusOne>>);
+
+static_assert(std::ranges::random_access_range<std::ranges::transform_view<RandomAccessView, PlusOne>>);
+static_assert(!std::ranges::random_access_range<std::ranges::transform_view<BidirectionalView, PlusOne>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/sentinel.pass.cpp
new file mode 100644
index 0000000..a2da6ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/sentinel.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class transform_view::<sentinel>;
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+template<class T>
+concept EndIsIter = requires(T t) { ++t.end(); };
+
+constexpr bool test() {
+  std::ranges::transform_view<SizedSentinelView, PlusOne> transformView1;
+  // Going to const and back.
+  auto sent1 = transformView1.end();
+  std::ranges::sentinel_t<const std::ranges::transform_view<SizedSentinelView, PlusOne>> sent2{sent1};
+  std::ranges::sentinel_t<const std::ranges::transform_view<SizedSentinelView, PlusOne>> sent3{sent2};
+  (void)sent3;
+
+  static_assert(!EndIsIter<decltype(sent1)>);
+  static_assert(!EndIsIter<decltype(sent2)>);
+  assert(sent1.base() == globalBuff + 8);
+
+  std::ranges::transform_view transformView2(SizedSentinelView{4}, PlusOne());
+  auto sent4 = transformView2.end();
+  auto iter = transformView1.begin();
+  {
+    assert(iter != sent1);
+    assert(iter != sent2);
+    assert(iter != sent4);
+  }
+
+  {
+    assert(iter + 8 == sent1);
+    assert(iter + 8 == sent2);
+    assert(iter + 4 == sent4);
+  }
+
+  {
+    assert(sent1 - iter  == 8);
+    assert(sent4 - iter  == 4);
+    assert(iter  - sent1 == -8);
+    assert(iter  - sent4 == -4);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/subscript.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/subscript.pass.cpp
new file mode 100644
index 0000000..30c0b2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/subscript.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::operator[]
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  std::ranges::transform_view transformView1(MoveOnlyView{buff}, PlusOneMutable{});
+  auto iter1 = std::move(transformView1).begin() + 1;
+  assert(iter1[0] == 2);
+  assert(iter1[4] == 6);
+
+  ASSERT_NOT_NOEXCEPT(
+    std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneMutable>>>()[0]);
+  LIBCPP_ASSERT_NOEXCEPT(
+    std::declval<std::ranges::iterator_t<std::ranges::transform_view<MoveOnlyView, PlusOneNoexcept>>>()[0]);
+
+  ASSERT_SAME_TYPE(
+    int,
+    decltype(std::declval<std::ranges::transform_view<RandomAccessView, PlusOneMutable>>().begin()[0]));
+  ASSERT_SAME_TYPE(
+    int&,
+    decltype(std::declval<std::ranges::transform_view<RandomAccessView, Increment>>().begin()[0]));
+  ASSERT_SAME_TYPE(
+    int&&,
+    decltype(std::declval<std::ranges::transform_view<RandomAccessView, IncrementRvalueRef>>().begin()[0]));
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/types.pass.cpp
new file mode 100644
index 0000000..2c095d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/iterator/types.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// transform_view::<iterator>::difference_type
+// transform_view::<iterator>::value_type
+// transform_view::<iterator>::iterator_category
+// transform_view::<iterator>::iterator_concept
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+template<class V, class F>
+concept HasIterCategory = requires { typename std::ranges::transform_view<V, F>::iterator_category; };
+
+constexpr bool test() {
+  {
+    // Member typedefs for contiguous iterator.
+    static_assert(std::same_as<std::iterator_traits<int*>::iterator_concept, std::contiguous_iterator_tag>);
+    static_assert(std::same_as<std::iterator_traits<int*>::iterator_category, std::random_access_iterator_tag>);
+
+    using TView = std::ranges::transform_view<MoveOnlyView, Increment>;
+    using TIter = std::ranges::iterator_t<TView>;
+    static_assert(std::same_as<typename TIter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<typename TIter::iterator_category, std::random_access_iterator_tag>);
+    static_assert(std::same_as<typename TIter::value_type, int>);
+    static_assert(std::same_as<typename TIter::difference_type, std::ptrdiff_t>);
+  }
+  {
+    // Member typedefs for random access iterator.
+    using TView = std::ranges::transform_view<RandomAccessView, Increment>;
+    using TIter = std::ranges::iterator_t<TView>;
+    static_assert(std::same_as<typename TIter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<typename TIter::iterator_category, std::random_access_iterator_tag>);
+    static_assert(std::same_as<typename TIter::value_type, int>);
+    static_assert(std::same_as<typename TIter::difference_type, std::ptrdiff_t>);
+  }
+  {
+    // Member typedefs for random access iterator/not-lvalue-ref.
+    using TView = std::ranges::transform_view<RandomAccessView, PlusOneMutable>;
+    using TIter = std::ranges::iterator_t<TView>;
+    static_assert(std::same_as<typename TIter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<typename TIter::iterator_category, std::input_iterator_tag>); // Note: this is now input_iterator_tag.
+    static_assert(std::same_as<typename TIter::value_type, int>);
+    static_assert(std::same_as<typename TIter::difference_type, std::ptrdiff_t>);
+  }
+  {
+    // Member typedefs for bidirectional iterator.
+    using TView = std::ranges::transform_view<BidirectionalView, Increment>;
+    using TIter = std::ranges::iterator_t<TView>;
+    static_assert(std::same_as<typename TIter::iterator_concept, std::bidirectional_iterator_tag>);
+    static_assert(std::same_as<typename TIter::iterator_category, std::bidirectional_iterator_tag>);
+    static_assert(std::same_as<typename TIter::value_type, int>);
+    static_assert(std::same_as<typename TIter::difference_type, std::ptrdiff_t>);
+  }
+  {
+    // Member typedefs for forward iterator.
+    using TView = std::ranges::transform_view<ForwardView, Increment>;
+    using TIter = std::ranges::iterator_t<TView>;
+    static_assert(std::same_as<typename TIter::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::same_as<typename TIter::iterator_category, std::forward_iterator_tag>);
+    static_assert(std::same_as<typename TIter::value_type, int>);
+    static_assert(std::same_as<typename TIter::difference_type, std::ptrdiff_t>);
+  }
+  {
+    // Member typedefs for input iterator.
+    using TView = std::ranges::transform_view<InputView, Increment>;
+    using TIter = std::ranges::iterator_t<TView>;
+    static_assert(std::same_as<typename TIter::iterator_concept, std::input_iterator_tag>);
+    static_assert(!HasIterCategory<InputView, Increment>);
+    static_assert(std::same_as<typename TIter::value_type, int>);
+    static_assert(std::same_as<typename TIter::difference_type, std::ptrdiff_t>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/size.pass.cpp
new file mode 100644
index 0000000..6146867
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/size.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() requires sized_range<V>
+// constexpr auto size() const requires sized_range<const V>
+
+#include <ranges>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T>
+concept SizeInvocable = requires(T t) { t.size(); };
+
+constexpr bool test() {
+  {
+    std::ranges::transform_view transformView(MoveOnlyView{}, PlusOne{});
+    assert(transformView.size() == 8);
+  }
+
+  {
+    const std::ranges::transform_view transformView(MoveOnlyView{globalBuff, 4}, PlusOne{});
+    assert(transformView.size() == 4);
+  }
+
+  static_assert(!SizeInvocable<std::ranges::transform_view<ForwardView, PlusOne>>);
+
+  static_assert(SizeInvocable<std::ranges::transform_view<SizedSentinelNotConstView, PlusOne>>);
+  static_assert(!SizeInvocable<const std::ranges::transform_view<SizedSentinelNotConstView, PlusOne>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/types.h
new file mode 100644
index 0000000..d31db8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.adaptors/range.transform/types.h
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TRANSFORM_TYPES_H
+#define TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TRANSFORM_TYPES_H
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_range.h"
+
+int globalBuff[8] = {0,1,2,3,4,5,6,7};
+
+struct MoveOnlyView : std::ranges::view_base {
+  int start_;
+  int *ptr_;
+  constexpr explicit MoveOnlyView(int* ptr = globalBuff, int start = 0) : start_(start), ptr_(ptr) {}
+  constexpr MoveOnlyView(MoveOnlyView&&) = default;
+  constexpr MoveOnlyView& operator=(MoveOnlyView&&) = default;
+  constexpr int *begin() const { return ptr_ + start_; }
+  constexpr int *end() const { return ptr_ + 8; }
+};
+static_assert( std::ranges::view<MoveOnlyView>);
+static_assert( std::ranges::contiguous_range<MoveOnlyView>);
+static_assert(!std::copyable<MoveOnlyView>);
+
+struct CopyableView : std::ranges::view_base {
+  int start_;
+  constexpr explicit CopyableView(int start = 0) : start_(start) {}
+  constexpr CopyableView(CopyableView const&) = default;
+  constexpr CopyableView& operator=(CopyableView const&) = default;
+  constexpr int *begin() const { return globalBuff + start_; }
+  constexpr int *end() const { return globalBuff + 8; }
+};
+static_assert(std::ranges::view<CopyableView>);
+static_assert(std::ranges::contiguous_range<CopyableView>);
+static_assert(std::copyable<CopyableView>);
+
+using ForwardIter = forward_iterator<int*>;
+struct ForwardView : std::ranges::view_base {
+  int *ptr_;
+  constexpr explicit ForwardView(int* ptr = globalBuff) : ptr_(ptr) {}
+  constexpr ForwardView(ForwardView&&) = default;
+  constexpr ForwardView& operator=(ForwardView&&) = default;
+  constexpr auto begin() const { return forward_iterator<int*>(ptr_); }
+  constexpr auto end() const { return forward_iterator<int*>(ptr_ + 8); }
+};
+static_assert(std::ranges::view<ForwardView>);
+static_assert(std::ranges::forward_range<ForwardView>);
+
+using ForwardRange = test_common_range<forward_iterator>;
+static_assert(!std::ranges::view<ForwardRange>);
+static_assert( std::ranges::forward_range<ForwardRange>);
+
+using RandomAccessIter = random_access_iterator<int*>;
+struct RandomAccessView : std::ranges::view_base {
+  RandomAccessIter begin() const noexcept;
+  RandomAccessIter end() const noexcept;
+};
+static_assert( std::ranges::view<RandomAccessView>);
+static_assert( std::ranges::random_access_range<RandomAccessView>);
+
+using BidirectionalIter = bidirectional_iterator<int*>;
+struct BidirectionalView : std::ranges::view_base {
+  BidirectionalIter begin() const;
+  BidirectionalIter end() const;
+};
+static_assert( std::ranges::view<BidirectionalView>);
+static_assert( std::ranges::bidirectional_range<BidirectionalView>);
+
+struct BorrowableRange {
+  int *begin() const;
+  int *end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowableRange> = true;
+static_assert(!std::ranges::view<BorrowableRange>);
+static_assert( std::ranges::contiguous_range<BorrowableRange>);
+static_assert( std::ranges::borrowed_range<BorrowableRange>);
+
+struct InputView : std::ranges::view_base {
+  int *ptr_;
+  constexpr explicit InputView(int* ptr = globalBuff) : ptr_(ptr) {}
+  constexpr auto begin() const { return cpp20_input_iterator<int*>(ptr_); }
+  constexpr auto end() const { return sentinel_wrapper<cpp20_input_iterator<int*>>(cpp20_input_iterator<int*>(ptr_ + 8)); }
+};
+static_assert( std::ranges::view<InputView>);
+static_assert(!std::ranges::sized_range<InputView>);
+
+struct SizedSentinelView : std::ranges::view_base {
+  int count_;
+  constexpr explicit SizedSentinelView(int count = 8) : count_(count) {}
+  constexpr auto begin() const { return RandomAccessIter(globalBuff); }
+  constexpr int *end() const { return globalBuff + count_; }
+};
+// TODO: remove these bogus operators
+constexpr auto operator- (const RandomAccessIter &lhs, int* rhs) { return base(lhs) - rhs; }
+constexpr auto operator- (int* lhs, const RandomAccessIter &rhs) { return lhs - base(rhs); }
+constexpr bool operator==(const RandomAccessIter &lhs, int* rhs) { return base(lhs) == rhs; }
+constexpr bool operator==(int* lhs, const RandomAccessIter &rhs) { return base(rhs) == lhs; }
+
+struct SizedSentinelNotConstView : std::ranges::view_base {
+  ForwardIter begin() const;
+  int *end() const;
+  size_t size();
+};
+// TODO: remove these bogus operators
+bool operator==(const ForwardIter &lhs, int* rhs);
+bool operator==(int* lhs, const ForwardIter &rhs);
+
+struct Range {
+  int *begin() const;
+  int *end() const;
+};
+
+using CountedIter = stride_counting_iterator<forward_iterator<int*>>;
+struct CountedView : std::ranges::view_base {
+  constexpr CountedIter begin() const { return CountedIter(ForwardIter(globalBuff)); }
+  constexpr CountedIter end() const { return CountedIter(ForwardIter(globalBuff + 8)); }
+};
+
+struct TimesTwo {
+  constexpr int operator()(int x) const { return x * 2; }
+};
+
+struct PlusOneMutable {
+  constexpr int operator()(int x) { return x + 1; }
+};
+
+struct PlusOne {
+  constexpr int operator()(int x) const { return x + 1; }
+};
+
+struct Increment {
+  constexpr int& operator()(int& x) { return ++x; }
+};
+
+struct IncrementRvalueRef {
+  constexpr int&& operator()(int& x) { return std::move(++x); }
+};
+
+struct PlusOneNoexcept {
+  constexpr int operator()(int x) noexcept { return x + 1; }
+};
+
+#endif // TEST_STD_RANGES_RANGE_ADAPTORS_RANGE_TRANSFORM_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/begin.pass.cpp
new file mode 100644
index 0000000..06419c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/begin.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator begin() const;
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T>
+constexpr void testType() {
+  {
+    std::ranges::iota_view<T> io(T(0));
+    assert(*io.begin() == T(0));
+  }
+  {
+    std::ranges::iota_view<T> io(T(10));
+    assert(*io.begin() == T(10));
+    assert(*std::move(io).begin() == T(10));
+  }
+  {
+    const std::ranges::iota_view<T> io(T(0));
+    assert(*io.begin() == T(0));
+  }
+  {
+    const std::ranges::iota_view<T> io(T(10));
+    assert(*io.begin() == T(10));
+  }
+}
+
+constexpr bool test() {
+  testType<SomeInt>();
+  testType<long long>();
+  testType<unsigned long long>();
+  testType<signed long>();
+  testType<unsigned long>();
+  testType<int>();
+  testType<unsigned>();
+  testType<short>();
+  testType<unsigned short>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..cbe8b3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/borrowing.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class W, class Bound>
+//   inline constexpr bool enable_borrowed_range<iota_view<W, Bound>> = true;
+
+#include <ranges>
+
+static_assert(std::ranges::borrowed_range<std::ranges::iota_view<int, int>>);
+static_assert(std::ranges::borrowed_range<std::ranges::iota_view<int, std::unreachable_sentinel_t>>);
+static_assert(std::ranges::borrowed_range<std::ranges::iota_view<int*, int*>>);
+static_assert(std::ranges::borrowed_range<std::ranges::iota_view<int*, std::unreachable_sentinel_t>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctad.compile.pass.cpp
new file mode 100644
index 0000000..e14a235
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctad.compile.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class W, class Bound>
+//     requires (!is-integer-like<W> || !is-integer-like<Bound> ||
+//               (is-signed-integer-like<W> == is-signed-integer-like<Bound>))
+//     iota_view(W, Bound) -> iota_view<W, Bound>;
+
+#include <ranges>
+#include <cassert>
+#include <concepts>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T, class U>
+concept CanDeduce = requires(const T& t, const U& u) {
+  std::ranges::iota_view(t, u);
+};
+
+void test() {
+  static_assert(std::same_as<
+    decltype(std::ranges::iota_view(0, 0)),
+    std::ranges::iota_view<int, int>
+  >);
+
+  static_assert(std::same_as<
+    decltype(std::ranges::iota_view(0)),
+    std::ranges::iota_view<int, std::unreachable_sentinel_t>
+  >);
+
+  static_assert(std::same_as<
+    decltype(std::ranges::iota_view(0, std::unreachable_sentinel)),
+    std::ranges::iota_view<int, std::unreachable_sentinel_t>
+  >);
+
+  static_assert(std::same_as<
+    decltype(std::ranges::iota_view(0, IntComparableWith(0))),
+    std::ranges::iota_view<int, IntComparableWith<int>>
+  >);
+
+  static_assert( CanDeduce<int, int>);
+  static_assert(!CanDeduce<int, unsigned>);
+  static_assert(!CanDeduce<unsigned, int>);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.default.pass.cpp
new file mode 100644
index 0000000..f462b96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.default.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iota_view() requires default_initializable<W> = default;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  {
+    std::ranges::iota_view<Int42<DefaultTo42>> io;
+    assert((*io.begin()).value_ == 42);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  static_assert(!std::default_initializable<Int42<ValueCtor>>);
+  static_assert( std::default_initializable<Int42<DefaultTo42>>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.first.last.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.first.last.pass.cpp
new file mode 100644
index 0000000..0b02cad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.first.last.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iota_view(iterator first, see below last);
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  {
+    std::ranges::iota_view commonView(SomeInt(0), SomeInt(10));
+    std::ranges::iota_view<SomeInt, SomeInt> io(commonView.begin(), commonView.end());
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+  }
+
+  {
+    std::ranges::iota_view unreachableSent(SomeInt(0));
+    std::ranges::iota_view<SomeInt> io(unreachableSent.begin(), std::unreachable_sentinel);
+    assert(std::ranges::next(io.begin(), 10) != io.end());
+  }
+
+  {
+    std::ranges::iota_view differentTypes(SomeInt(0), IntComparableWith(SomeInt(10)));
+    std::ranges::iota_view<SomeInt, IntComparableWith<SomeInt>> io(differentTypes.begin(), differentTypes.end());
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
+
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.value.bound.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.value.bound.pass.cpp
new file mode 100644
index 0000000..906e0e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.value.bound.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_MSVC_DIAGNOSTIC_IGNORED(4018 4389) // various "signed/unsigned mismatch"
+
+// constexpr iota_view(type_identity_t<W> value, type_identity_t<Bound> bound);
+
+#include <ranges>
+#include <cassert>
+
+#include "types.h"
+
+constexpr bool test() {
+  {
+    std::ranges::iota_view<SomeInt, SomeInt> io(SomeInt(0), SomeInt(10));
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+  }
+
+  {
+    std::ranges::iota_view<SomeInt> io(SomeInt(0), std::unreachable_sentinel);
+    assert(std::ranges::next(io.begin(), 10) != io.end());
+  }
+
+  {
+    std::ranges::iota_view<SomeInt, IntComparableWith<SomeInt>> io(SomeInt(0), IntComparableWith(SomeInt(10)));
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+  }
+
+  {
+    // This is allowed only when using the constructor (not the deduction guide).
+    std::ranges::iota_view<int, unsigned> signedUnsigned(0, 10);
+    assert(std::ranges::next(signedUnsigned.begin(), 10) == signedUnsigned.end());
+  }
+
+  {
+    // This is allowed only when using the constructor (not the deduction guide).
+    std::ranges::iota_view<unsigned, int> signedUnsigned(0, 10);
+    assert(std::ranges::next(signedUnsigned.begin(), 10) == signedUnsigned.end());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.value.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.value.pass.cpp
new file mode 100644
index 0000000..ac5a25b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/ctor.value.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit iota_view(W value);
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "types.h"
+
+struct SomeIntComparable {
+  using difference_type = int;
+
+  SomeInt value_;
+  constexpr SomeIntComparable() : value_(SomeInt(10)) {}
+
+  friend constexpr bool operator==(SomeIntComparable lhs, SomeIntComparable rhs) {
+    return lhs.value_ == rhs.value_;
+  }
+  friend constexpr bool operator==(SomeIntComparable lhs, SomeInt rhs) {
+    return lhs.value_ == rhs;
+  }
+  friend constexpr bool operator==(SomeInt lhs, SomeIntComparable rhs) {
+    return lhs == rhs.value_;
+  }
+
+  friend constexpr difference_type operator-(SomeIntComparable lhs, SomeIntComparable rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  constexpr SomeIntComparable& operator++() { ++value_; return *this; }
+  constexpr SomeIntComparable  operator++(int) { auto tmp = *this; ++value_; return tmp; }
+  constexpr SomeIntComparable  operator--() { --value_; return *this; }
+};
+
+constexpr bool test() {
+  {
+    std::ranges::iota_view<SomeInt> io(SomeInt(42));
+    assert((*io.begin()).value_ == 42);
+    // Check that end returns std::unreachable_sentinel.
+    assert(io.end() != io.begin());
+    static_assert(std::same_as<decltype(io.end()), std::unreachable_sentinel_t>);
+  }
+
+  {
+    std::ranges::iota_view<SomeInt, SomeIntComparable> io(SomeInt(0));
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+  }
+  {
+    static_assert(!std::is_convertible_v<std::ranges::iota_view<SomeInt>, SomeInt>);
+    static_assert( std::is_constructible_v<std::ranges::iota_view<SomeInt>, SomeInt>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/end.pass.cpp
new file mode 100644
index 0000000..6abbef5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/end.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_MSVC_DIAGNOSTIC_IGNORED(4018 4389) // various "signed/unsigned mismatch"
+
+// constexpr auto end() const;
+// constexpr iterator end() const requires same_as<W, Bound>;
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "types.h"
+
+template<class T, class U>
+constexpr void testType(U u) {
+  {
+    std::ranges::iota_view<T, U> io(T(0), u);
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+  }
+  {
+    std::ranges::iota_view<T, U> io(T(10), u);
+    assert(io.begin() == io.end());
+    assert(io.begin() == std::move(io).end());
+  }
+  {
+    const std::ranges::iota_view<T, U> io(T(0), u);
+    assert(std::ranges::next(io.begin(), 10) == io.end());
+    assert(std::ranges::next(io.begin(), 10) == std::move(io).end());
+  }
+  {
+    const std::ranges::iota_view<T, U> io(T(10), u);
+    assert(io.begin() == io.end());
+  }
+
+  {
+    std::ranges::iota_view<T> io(T(0), std::unreachable_sentinel);
+    assert(io.begin() != io.end());
+    assert(std::ranges::next(io.begin()) != io.end());
+    assert(std::ranges::next(io.begin(), 10) != io.end());
+  }
+  {
+    const std::ranges::iota_view<T> io(T(0), std::unreachable_sentinel);
+    assert(io.begin() != io.end());
+    assert(std::ranges::next(io.begin()) != io.end());
+    assert(std::ranges::next(io.begin(), 10) != io.end());
+  }
+}
+
+constexpr bool test() {
+  testType<SomeInt>(SomeInt(10));
+  testType<SomeInt>(IntComparableWith(SomeInt(10)));
+  testType<signed long>(IntComparableWith<signed long>(10));
+  testType<unsigned long>(IntComparableWith<unsigned long>(10));
+  testType<int>(IntComparableWith<int>(10));
+  testType<int>(int(10));
+  testType<int>(unsigned(10));
+  testType<unsigned>(unsigned(10));
+  testType<unsigned>(int(10));
+  testType<unsigned>(IntComparableWith<unsigned>(10));
+  testType<short>(short(10));
+  testType<short>(IntComparableWith<short>(10));
+  testType<unsigned short>(IntComparableWith<unsigned short>(10));
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/compare.pass.cpp
new file mode 100644
index 0000000..dba5ce2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/compare.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iota_view::<iterator>::operator{<,>,<=,>=,==,!=,<=>}
+
+#include <ranges>
+#include <compare>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    // Test `int`, which has operator<=>; the iota iterator should also have operator<=>.
+    using R = std::ranges::iota_view<int>;
+    static_assert(std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    std::same_as<R> auto r = std::views::iota(42);
+    auto iter1 = r.begin();
+    auto iter2 = iter1 + 1;
+
+    assert(!(iter1 < iter1));  assert(iter1 < iter2);     assert(!(iter2 < iter1));
+    assert(iter1 <= iter1);    assert(iter1 <= iter2);    assert(!(iter2 <= iter1));
+    assert(!(iter1 > iter1));  assert(!(iter1 > iter2));  assert(iter2 > iter1);
+    assert(iter1 >= iter1);    assert(!(iter1 >= iter2)); assert(iter2 >= iter1);
+    assert(iter1 == iter1);    assert(!(iter1 == iter2)); assert(iter2 == iter2);
+    assert(!(iter1 != iter1)); assert(iter1 != iter2);    assert(!(iter2 != iter2));
+
+    assert((iter1 <=> iter2) == std::strong_ordering::less);
+    assert((iter1 <=> iter1) == std::strong_ordering::equal);
+    assert((iter2 <=> iter1) == std::strong_ordering::greater);
+  }
+
+  {
+    // Test a new-school iterator with operator<=>; the iota iterator should also have operator<=>.
+    using It = three_way_contiguous_iterator<int*>;
+    static_assert(std::three_way_comparable<It>);
+    using R = std::ranges::iota_view<It>;
+    static_assert(std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    int a[] = {1,2,3};
+    std::same_as<R> auto r = std::views::iota(It(a));
+    auto iter1 = r.begin();
+    auto iter2 = iter1 + 1;
+
+    assert(!(iter1 < iter1));  assert(iter1 < iter2);     assert(!(iter2 < iter1));
+    assert(iter1 <= iter1);    assert(iter1 <= iter2);    assert(!(iter2 <= iter1));
+    assert(!(iter1 > iter1));  assert(!(iter1 > iter2));  assert(iter2 > iter1);
+    assert(iter1 >= iter1);    assert(!(iter1 >= iter2)); assert(iter2 >= iter1);
+    assert(iter1 == iter1);    assert(!(iter1 == iter2)); assert(iter2 == iter2);
+    assert(!(iter1 != iter1)); assert(iter1 != iter2);    assert(!(iter2 != iter2));
+
+    assert((iter1 <=> iter2) == std::strong_ordering::less);
+    assert((iter1 <=> iter1) == std::strong_ordering::equal);
+    assert((iter2 <=> iter1) == std::strong_ordering::greater);
+  }
+
+  {
+    // Test an old-school iterator with no operator<=>; the iota iterator shouldn't have operator<=> either.
+    using It = random_access_iterator<int*>;
+    static_assert(!std::three_way_comparable<It>);
+    using R = std::ranges::iota_view<It>;
+    static_assert(!std::three_way_comparable<std::ranges::iterator_t<R>>);
+
+    int a[] = {1,2,3};
+    std::same_as<R> auto r = std::views::iota(It(a));
+    auto iter1 = r.begin();
+    auto iter2 = iter1 + 1;
+
+    assert(!(iter1 < iter1));  assert(iter1 < iter2);     assert(!(iter2 < iter1));
+    assert(iter1 <= iter1);    assert(iter1 <= iter2);    assert(!(iter2 <= iter1));
+    assert(!(iter1 > iter1));  assert(!(iter1 > iter2));  assert(iter2 > iter1);
+    assert(iter1 >= iter1);    assert(!(iter1 >= iter2)); assert(iter2 >= iter1);
+    assert(iter1 == iter1);    assert(!(iter1 == iter2)); assert(iter2 == iter2);
+    assert(!(iter1 != iter1)); assert(iter1 != iter2);    assert(!(iter2 != iter2));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.default.pass.cpp
new file mode 100644
index 0000000..818f88a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.default.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator() requires default_initializable<W> = default;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  using Iter = std::ranges::iterator_t<std::ranges::iota_view<Int42<DefaultTo42>>>;
+  Iter iter;
+  assert((*iter).value_ == 42);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.value.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.value.pass.cpp
new file mode 100644
index 0000000..5a71837
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/ctor.value.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit iterator(W value);
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    using Iter = std::ranges::iterator_t<std::ranges::iota_view<int>>;
+    auto iter = Iter(42);
+    assert(*iter == 42);
+  }
+  {
+    using Iter = std::ranges::iterator_t<std::ranges::iota_view<SomeInt>>;
+    auto iter = Iter(SomeInt(42));
+    assert(*iter == SomeInt(42));
+  }
+  {
+    using Iter = std::ranges::iterator_t<std::ranges::iota_view<SomeInt>>;
+    static_assert(!std::is_convertible_v<Iter, SomeInt>);
+    static_assert( std::is_constructible_v<Iter, SomeInt>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/decrement.pass.cpp
new file mode 100644
index 0000000..45b5e17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/decrement.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator--() requires decrementable<W>;
+// constexpr iterator operator--(int) requires decrementable<W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+template<class T>
+concept Decrementable =
+  requires(T i) {
+    --i;
+  } ||
+  requires(T i) {
+    i--;
+  };
+
+constexpr bool test() {
+  {
+    std::ranges::iota_view<int> io(0);
+    auto iter1 = std::next(io.begin());
+    auto iter2 = std::next(io.begin());
+    assert(iter1 == iter2);
+    assert(--iter1 != iter2--);
+    assert(iter1 == iter2);
+
+    static_assert(!std::is_reference_v<decltype(iter2--)>);
+    static_assert( std::is_reference_v<decltype(--iter2)>);
+    static_assert(std::same_as<std::remove_reference_t<decltype(--iter2)>, decltype(iter2--)>);
+  }
+  {
+    std::ranges::iota_view io(SomeInt(0));
+    auto iter1 = std::next(io.begin());
+    auto iter2 = std::next(io.begin());
+    assert(iter1 == iter2);
+    assert(--iter1 != iter2--);
+    assert(iter1 == iter2);
+
+    static_assert(!std::is_reference_v<decltype(iter2--)>);
+    static_assert( std::is_reference_v<decltype(--iter2)>);
+    static_assert(std::same_as<std::remove_reference_t<decltype(--iter2)>, decltype(iter2--)>);
+  }
+
+  static_assert(!Decrementable<std::ranges::iota_view<NotDecrementable>>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/increment.pass.cpp
new file mode 100644
index 0000000..a979a2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/increment.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator++();
+// constexpr void operator++(int);
+// constexpr iterator operator++(int) requires incrementable<W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    std::ranges::iota_view<int> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(++iter1 != iter2++);
+    assert(iter1 == iter2);
+
+    static_assert(!std::is_reference_v<decltype(iter2++)>);
+    static_assert( std::is_reference_v<decltype(++iter2)>);
+    static_assert(std::same_as<std::remove_reference_t<decltype(++iter2)>, decltype(iter2++)>);
+  }
+  {
+    std::ranges::iota_view io(SomeInt(0));
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(++iter1 != iter2++);
+    assert(iter1 == iter2);
+
+    static_assert(!std::is_reference_v<decltype(iter2++)>);
+    static_assert( std::is_reference_v<decltype(++iter2)>);
+    static_assert(std::same_as<std::remove_reference_t<decltype(++iter2)>, decltype(iter2++)>);
+  }
+
+  {
+    std::ranges::iota_view<NotIncrementable> io(NotIncrementable(0));
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(++iter1 != iter2);
+    iter2++;
+    assert(iter1 == iter2);
+
+    static_assert(std::same_as<decltype(iter2++), void>);
+    static_assert(std::is_reference_v<decltype(++iter2)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/member_typedefs.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/member_typedefs.compile.pass.cpp
new file mode 100644
index 0000000..e009bfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/member_typedefs.compile.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test iterator category and iterator concepts.
+
+#include <cassert>
+#include <cstdint>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+struct Decrementable {
+  using difference_type = int;
+
+  auto operator<=>(const Decrementable&) const = default;
+
+  constexpr Decrementable& operator++();
+  constexpr Decrementable  operator++(int);
+  constexpr Decrementable& operator--();
+  constexpr Decrementable  operator--(int);
+};
+
+struct Incrementable {
+  using difference_type = int;
+
+  auto operator<=>(const Incrementable&) const = default;
+
+  constexpr Incrementable& operator++();
+  constexpr Incrementable  operator++(int);
+};
+
+struct BigType {
+  char buffer[128];
+
+  using difference_type = int;
+
+  auto operator<=>(const BigType&) const = default;
+
+  constexpr BigType& operator++();
+  constexpr BigType  operator++(int);
+};
+
+struct CharDifferenceType {
+  using difference_type = signed char;
+
+  auto operator<=>(const CharDifferenceType&) const = default;
+
+  constexpr CharDifferenceType& operator++();
+  constexpr CharDifferenceType  operator++(int);
+};
+
+template<class T>
+concept HasIteratorCategory = requires { typename std::ranges::iterator_t<T>::iterator_category; };
+
+void test() {
+  {
+    const std::ranges::iota_view<char> io(0);
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, char>);
+    static_assert(sizeof(Iter::difference_type) > sizeof(char));
+    static_assert(std::is_signed_v<Iter::difference_type>);
+    LIBCPP_STATIC_ASSERT(std::same_as<Iter::difference_type, int>);
+  }
+  {
+    const std::ranges::iota_view<short> io(0);
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, short>);
+    static_assert(sizeof(Iter::difference_type) > sizeof(short));
+    static_assert(std::is_signed_v<Iter::difference_type>);
+    LIBCPP_STATIC_ASSERT(std::same_as<Iter::difference_type, int>);
+  }
+  {
+    const std::ranges::iota_view<int> io(0);
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, int>);
+    static_assert(sizeof(Iter::difference_type) > sizeof(int));
+    static_assert(std::is_signed_v<Iter::difference_type>);
+    // If we're compiling for 32 bit or windows, int and long are the same size, so long long is the correct difference type.
+#if INTPTR_MAX == INT32_MAX || defined(_WIN32)
+    LIBCPP_STATIC_ASSERT(std::same_as<Iter::difference_type, long long>);
+#else
+    LIBCPP_STATIC_ASSERT(std::same_as<Iter::difference_type, long>);
+#endif
+  }
+  {
+    const std::ranges::iota_view<long> io(0);
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, long>);
+    // Same as below, if there is no type larger than long, we can just use that.
+    static_assert(sizeof(Iter::difference_type) >= sizeof(long));
+    static_assert(std::is_signed_v<Iter::difference_type>);
+    LIBCPP_STATIC_ASSERT(std::same_as<Iter::difference_type, long long>);
+  }
+  {
+    const std::ranges::iota_view<long long> io(0);
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::random_access_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, long long>);
+    // No integer is larger than long long, so it is OK to use long long as the difference type here:
+    // https://eel.is/c++draft/range.iota.view#1.3
+    static_assert(sizeof(Iter::difference_type) >= sizeof(long long));
+    static_assert(std::is_signed_v<Iter::difference_type>);
+    LIBCPP_STATIC_ASSERT(std::same_as<Iter::difference_type, long long>);
+  }
+  {
+    const std::ranges::iota_view<Decrementable> io;
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::bidirectional_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, Decrementable>);
+    static_assert(std::same_as<Iter::difference_type, int>);
+  }
+  {
+    const std::ranges::iota_view<Incrementable> io;
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, Incrementable>);
+    static_assert(std::same_as<Iter::difference_type, int>);
+  }
+  {
+    const std::ranges::iota_view<NotIncrementable> io(NotIncrementable(0));
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::input_iterator_tag>);
+    static_assert(!HasIteratorCategory<std::ranges::iota_view<NotIncrementable>>);
+    static_assert(std::same_as<Iter::value_type, NotIncrementable>);
+    static_assert(std::same_as<Iter::difference_type, int>);
+  }
+  {
+    const std::ranges::iota_view<BigType> io;
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, BigType>);
+    static_assert(std::same_as<Iter::difference_type, int>);
+  }
+  {
+    const std::ranges::iota_view<CharDifferenceType> io;
+    using Iter = decltype(io.begin());
+    static_assert(std::same_as<Iter::iterator_concept, std::forward_iterator_tag>);
+    static_assert(std::same_as<Iter::iterator_category, std::input_iterator_tag>);
+    static_assert(std::same_as<Iter::value_type, CharDifferenceType>);
+    static_assert(std::same_as<Iter::difference_type, signed char>);
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/minus.pass.cpp
new file mode 100644
index 0000000..ff425ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/minus.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr iterator operator-(iterator i, difference_type n)
+//   requires advanceable<W>;
+// friend constexpr difference_type operator-(const iterator& x, const iterator& y)
+//   requires advanceable<W>;
+
+#include <cassert>
+#include <cstdint>
+#include <ranges>
+
+#include "test_macros.h"
+#include "../types.h"
+
+// If we're compiling for 32 bit or windows, int and long are the same size, so long long is the correct difference type.
+#if INTPTR_MAX == INT32_MAX || defined(_WIN32)
+using IntDiffT = long long;
+#else
+using IntDiffT = long;
+#endif
+
+constexpr bool test() {
+  // <iterator> - difference_type
+  {
+    // When "_Start" is signed integer like.
+    {
+      std::ranges::iota_view<int> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 == iter2);
+      assert(iter1 - 5 != iter2);
+      assert(iter1 - 5 == std::ranges::prev(iter2, 5));
+
+      static_assert(!std::is_reference_v<decltype(iter2 - 5)>);
+    }
+
+    // When "_Start" is not integer like.
+    {
+      std::ranges::iota_view io(SomeInt(0));
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 == iter2);
+      assert(iter1 - 5 != iter2);
+      assert(iter1 - 5 == std::ranges::prev(iter2, 5));
+
+      static_assert(!std::is_reference_v<decltype(iter2 - 5)>);
+    }
+
+    // When "_Start" is unsigned integer like and n is greater than or equal to zero.
+    {
+      std::ranges::iota_view<unsigned> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 == iter2);
+      assert(iter1 - 5 != iter2);
+      assert(iter1 - 5 == std::ranges::prev(iter2, 5));
+
+      static_assert(!std::is_reference_v<decltype(iter2 - 5)>);
+    }
+    {
+      std::ranges::iota_view<unsigned> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - 0 == iter2);
+    }
+
+    // When "_Start" is unsigned integer like and n is less than zero.
+    {
+      std::ranges::iota_view<unsigned> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - 5 != iter2);
+      assert(iter1 - 5 == std::ranges::prev(iter2, 5));
+
+      static_assert(!std::is_reference_v<decltype(iter2 - 5)>);
+    }
+  }
+
+  // <iterator> - <iterator>
+  {
+    // When "_Start" is signed integer like.
+    {
+      std::ranges::iota_view<int> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 5);
+      assert(iter1 - iter2 == 5);
+
+      LIBCPP_STATIC_ASSERT(std::same_as<decltype(iter1 - iter2), IntDiffT>);
+    }
+    {
+      std::ranges::iota_view<int> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - iter2 == 0);
+
+      LIBCPP_STATIC_ASSERT(std::same_as<decltype(iter1 - iter2), IntDiffT>);
+    }
+    {
+      std::ranges::iota_view<int> io(0);
+      auto iter1 = std::next(io.begin(), 5);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - iter2 == -5);
+
+      LIBCPP_STATIC_ASSERT(std::same_as<decltype(iter1 - iter2), IntDiffT>);
+    }
+
+    // When "_Start" is unsigned integer like and y > x.
+    {
+      std::ranges::iota_view<unsigned> io(0);
+      auto iter1 = std::next(io.begin(), 5);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - iter2 == -5);
+
+      LIBCPP_STATIC_ASSERT(std::same_as<decltype(iter1 - iter2), IntDiffT>);
+    }
+
+    // When "_Start" is unsigned integer like and x >= y.
+    {
+      std::ranges::iota_view<unsigned> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 5);
+      assert(iter1 - iter2 == 5);
+
+      LIBCPP_STATIC_ASSERT(std::same_as<decltype(iter1 - iter2), IntDiffT>);
+    }
+    {
+      std::ranges::iota_view<unsigned> io(0);
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - iter2 == 0);
+
+      LIBCPP_STATIC_ASSERT(std::same_as<decltype(iter1 - iter2), IntDiffT>);
+    }
+
+    // When "_Start" is not integer like.
+    {
+      std::ranges::iota_view io(SomeInt(0));
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 5);
+      assert(iter1 - iter2 == 5);
+
+      static_assert(std::same_as<decltype(iter1 - iter2), int>);
+    }
+    {
+      std::ranges::iota_view io(SomeInt(0));
+      auto iter1 = std::next(io.begin(), 10);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - iter2 == 0);
+
+      static_assert(std::same_as<decltype(iter1 - iter2), int>);
+    }
+    {
+      std::ranges::iota_view io(SomeInt(0));
+      auto iter1 = std::next(io.begin(), 5);
+      auto iter2 = std::next(io.begin(), 10);
+      assert(iter1 - iter2 == -5);
+
+      static_assert(std::same_as<decltype(iter1 - iter2), int>);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/minus_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/minus_eq.pass.cpp
new file mode 100644
index 0000000..6b16982
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/minus_eq.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator-=(difference_type n)
+//   requires advanceable<W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  // When "_Start" is signed integer like.
+  {
+    std::ranges::iota_view<int> io(0);
+    auto iter1 = std::next(io.begin(), 10);
+    auto iter2 = std::next(io.begin(), 10);
+    assert(iter1 == iter2);
+    iter1 -= 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::prev(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 -= 5)>);
+  }
+
+  // When "_Start" is not integer like.
+  {
+    std::ranges::iota_view io(SomeInt(0));
+    auto iter1 = std::next(io.begin(), 10);
+    auto iter2 = std::next(io.begin(), 10);
+    assert(iter1 == iter2);
+    iter1 -= 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::prev(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 -= 5)>);
+  }
+
+  // When "_Start" is unsigned integer like and n is greater than or equal to zero.
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = std::next(io.begin(), 10);
+    auto iter2 = std::next(io.begin(), 10);
+    assert(iter1 == iter2);
+    iter1 -= 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::prev(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 -= 5)>);
+  }
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = std::next(io.begin(), 10);
+    auto iter2 = std::next(io.begin(), 10);
+    assert(iter1 == iter2);
+    iter1 -= 0;
+    assert(iter1 == iter2);
+  }
+
+  // When "_Start" is unsigned integer like and n is less than zero.
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = std::next(io.begin(), 10);
+    auto iter2 = std::next(io.begin(), 10);
+    assert(iter1 == iter2);
+    iter1 -= -5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 -= -5)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/plus.pass.cpp
new file mode 100644
index 0000000..aaff730
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/plus.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr iterator operator+(iterator i, difference_type n)
+//   requires advanceable<W>;
+// friend constexpr iterator operator+(difference_type n, iterator i)
+//   requires advanceable<W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  // When "_Start" is signed integer like.
+  {
+    std::ranges::iota_view<int> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(iter1 + 5 != iter2);
+    assert(iter1 + 5 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+
+  // When "_Start" is not integer like.
+  {
+    std::ranges::iota_view io(SomeInt(0));
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(iter1 + 5 != iter2);
+    assert(iter1 + 5 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+
+  // When "_Start" is unsigned integer like and n is greater than or equal to zero.
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(iter1 + 5 != iter2);
+    assert(iter1 + 5 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(iter1 + 0 == iter2);
+  }
+
+  // When "_Start" is unsigned integer like and n is less than zero.
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    assert(iter1 + 5 != iter2);
+    assert(iter1 + 5 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/plus_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/plus_eq.pass.cpp
new file mode 100644
index 0000000..ded3c97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/plus_eq.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr iterator& operator+=(difference_type n)
+//   requires advanceable<W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  // When "_Start" is signed integer like.
+  {
+    std::ranges::iota_view<int> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    iter1 += 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+
+  // When "_Start" is not integer like.
+  {
+    std::ranges::iota_view io(SomeInt(0));
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    iter1 += 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+
+  // When "_Start" is unsigned integer like and n is greater than or equal to zero.
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    iter1 += 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    iter1 += 0;
+    assert(iter1 == iter2);
+  }
+
+  // When "_Start" is unsigned integer like and n is less than zero.
+  {
+    std::ranges::iota_view<unsigned> io(0);
+    auto iter1 = io.begin();
+    auto iter2 = io.begin();
+    assert(iter1 == iter2);
+    iter1 += 5;
+    assert(iter1 != iter2);
+    assert(iter1 == std::ranges::next(iter2, 5));
+
+    static_assert(std::is_reference_v<decltype(iter2 += 5)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/star.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/star.pass.cpp
new file mode 100644
index 0000000..570c74e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/star.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr W operator*() const noexcept(is_nothrow_copy_constructible_v<W>);
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_MSVC_DIAGNOSTIC_IGNORED(4018) // various "signed/unsigned mismatch"
+
+#include <ranges>
+#include <cassert>
+
+#include "../types.h"
+
+struct NotNoexceptCopy {
+  using difference_type = int;
+
+  int value_;
+  constexpr explicit NotNoexceptCopy(int value = 0) : value_(value) {}
+  constexpr NotNoexceptCopy(const NotNoexceptCopy& other) noexcept(false) : value_(other.value_) {}
+
+  bool operator==(const NotNoexceptCopy&) const = default;
+
+  friend constexpr NotNoexceptCopy& operator+=(NotNoexceptCopy &lhs, const NotNoexceptCopy& rhs) {
+    lhs.value_ += rhs.value_; return lhs;
+  }
+  friend constexpr NotNoexceptCopy& operator-=(NotNoexceptCopy &lhs, const NotNoexceptCopy& rhs) {
+    lhs.value_ -= rhs.value_; return lhs;
+  }
+
+  friend constexpr NotNoexceptCopy operator+(NotNoexceptCopy lhs, NotNoexceptCopy rhs) {
+    return NotNoexceptCopy{lhs.value_ + rhs.value_};
+  }
+  friend constexpr int operator-(NotNoexceptCopy lhs, NotNoexceptCopy rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  constexpr NotNoexceptCopy& operator++()     { ++value_; return *this; }
+  constexpr void              operator++(int) { ++value_;               }
+};
+
+template<class T>
+constexpr void testType() {
+  {
+    std::ranges::iota_view<T> io(T(0));
+    auto iter = io.begin();
+    for (int i = 0; i < 100; ++i, ++iter)
+      assert(*iter == T(i));
+
+    static_assert(noexcept(*iter) == !std::same_as<T, NotNoexceptCopy>);
+  }
+  {
+    std::ranges::iota_view<T> io(T(10));
+    auto iter = io.begin();
+    for (int i = 10; i < 100; ++i, ++iter)
+      assert(*iter == T(i));
+  }
+  {
+    const std::ranges::iota_view<T> io(T(0));
+    auto iter = io.begin();
+    for (int i = 0; i < 100; ++i, ++iter)
+      assert(*iter == T(i));
+  }
+  {
+    const std::ranges::iota_view<T> io(T(10));
+    auto iter = io.begin();
+    for (int i = 10; i < 100; ++i, ++iter)
+      assert(*iter == T(i));
+  }
+}
+
+constexpr bool test() {
+  testType<SomeInt>();
+  testType<NotNoexceptCopy>();
+  testType<signed long>();
+  testType<unsigned long>();
+  testType<int>();
+  testType<unsigned>();
+  testType<short>();
+  testType<unsigned short>();
+
+  // Tests a mix of signed unsigned types.
+  {
+    const std::ranges::iota_view<int, unsigned> io(0, 10);
+    auto iter = io.begin();
+    for (int i = 0; i < 10; ++i, ++iter)
+      assert(*iter == i);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/subscript.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/subscript.pass.cpp
new file mode 100644
index 0000000..0e5aca0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/iterator/subscript.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr W operator[](difference_type n) const
+//   requires advanceable<W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+template<class T>
+constexpr void testType() {
+  {
+    std::ranges::iota_view<T> io(T(0));
+    auto iter = io.begin();
+    for (int i = 0; i < 100; ++i)
+      assert(iter[i] == T(i));
+  }
+  {
+    std::ranges::iota_view<T> io(T(10));
+    auto iter = io.begin();
+    for (int i = 0; i < 100; ++i)
+      assert(iter[i] == T(i + 10));
+  }
+  {
+    const std::ranges::iota_view<T> io(T(0));
+    auto iter = io.begin();
+    for (int i = 0; i < 100; ++i)
+      assert(iter[i] == T(i));
+  }
+  {
+    const std::ranges::iota_view<T> io(T(10));
+    auto iter = io.begin();
+    for (int i = 0; i < 100; ++i)
+      assert(iter[i] == T(i + 10));
+  }
+}
+
+constexpr bool test() {
+  testType<SomeInt>();
+  testType<signed long>();
+  testType<unsigned long>();
+  testType<int>();
+  testType<unsigned>();
+  testType<short>();
+  testType<unsigned short>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..1922139
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test that iota_view conforms to range and view concepts.
+
+#include <ranges>
+
+#include "types.h"
+
+struct Decrementable {
+  using difference_type = int;
+
+  auto operator<=>(const Decrementable&) const = default;
+
+  Decrementable& operator++();
+  Decrementable  operator++(int);
+  Decrementable& operator--();
+  Decrementable  operator--(int);
+};
+
+struct Incrementable {
+  using difference_type = int;
+
+  auto operator<=>(const Incrementable&) const = default;
+
+  Incrementable& operator++();
+  Incrementable  operator++(int);
+};
+
+static_assert(std::ranges::random_access_range<std::ranges::iota_view<int>>);
+static_assert(std::ranges::random_access_range<const std::ranges::iota_view<int>>);
+static_assert(std::ranges::bidirectional_range<std::ranges::iota_view<Decrementable>>);
+static_assert(std::ranges::forward_range<std::ranges::iota_view<Incrementable>>);
+static_assert(std::ranges::input_range<std::ranges::iota_view<NotIncrementable>>);
+static_assert(std::ranges::view<std::ranges::iota_view<int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/ctor.default.pass.cpp
new file mode 100644
index 0000000..9383fd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/ctor.default.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// sentinel() = default;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  using Sent = std::ranges::sentinel_t<std::ranges::iota_view<Int42<DefaultTo42>, IntComparableWith<Int42<DefaultTo42>>>>;
+  using Iter = std::ranges::iterator_t<std::ranges::iota_view<Int42<DefaultTo42>, IntComparableWith<Int42<DefaultTo42>>>>;
+  assert(Sent() == Iter());
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/ctor.value.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/ctor.value.pass.cpp
new file mode 100644
index 0000000..c465345
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/ctor.value.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit sentinel(Bound bound);
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    using Sent = std::ranges::sentinel_t<std::ranges::iota_view<int, IntSentinelWith<int>>>;
+    using Iter = std::ranges::iterator_t<std::ranges::iota_view<int, IntSentinelWith<int>>>;
+    auto sent = Sent(IntSentinelWith<int>(42));
+    assert(sent == Iter(42));
+  }
+  {
+    using Sent = std::ranges::sentinel_t<std::ranges::iota_view<SomeInt, IntSentinelWith<SomeInt>>>;
+    using Iter = std::ranges::iterator_t<std::ranges::iota_view<SomeInt, IntSentinelWith<SomeInt>>>;
+    auto sent = Sent(IntSentinelWith<SomeInt>(SomeInt(42)));
+    assert(sent == Iter(SomeInt(42)));
+  }
+  {
+    using Sent = std::ranges::sentinel_t<std::ranges::iota_view<SomeInt, IntSentinelWith<SomeInt>>>;
+    static_assert(!std::is_convertible_v<Sent, IntSentinelWith<SomeInt>>);
+    static_assert( std::is_constructible_v<Sent, IntSentinelWith<SomeInt>>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/eq.pass.cpp
new file mode 100644
index 0000000..ce3f46d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/eq.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr bool operator==(const iterator& x, const sentinel& y);
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../types.h"
+
+constexpr bool test() {
+  {
+    const std::ranges::iota_view<int, IntComparableWith<int>> io(0, IntComparableWith<int>(10));
+    auto iter = io.begin();
+    auto sent = io.end();
+    assert(iter != sent);
+    assert(iter + 10 == sent);
+  }
+  {
+    std::ranges::iota_view<int, IntComparableWith<int>> io(0, IntComparableWith<int>(10));
+    auto iter = io.begin();
+    auto sent = io.end();
+    assert(iter != sent);
+    assert(iter + 10 == sent);
+  }
+  {
+    const std::ranges::iota_view io(SomeInt(0), IntComparableWith(SomeInt(10)));
+    auto iter = io.begin();
+    auto sent = io.end();
+    assert(iter != sent);
+    assert(iter + 10 == sent);
+  }
+  {
+    std::ranges::iota_view io(SomeInt(0), IntComparableWith(SomeInt(10)));
+    auto iter = io.begin();
+    auto sent = io.end();
+    assert(iter != sent);
+    assert(iter + 10 == sent);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/minus.pass.cpp
new file mode 100644
index 0000000..1de01a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/sentinel/minus.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend constexpr iter_difference_t<W> operator-(const iterator& x, const sentinel& y)
+//   requires sized_sentinel_for<Bound, W>;
+// friend constexpr iter_difference_t<W> operator-(const sentinel& x, const iterator& y)
+//   requires sized_sentinel_for<Bound, W>;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "../types.h"
+
+template<class T>
+concept MinusInvocable = requires(std::ranges::iota_view<T, IntSentinelWith<T>> io) {
+  io.end() - io.begin();
+};
+
+constexpr bool test() {
+  int buffer[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+
+  {
+    auto outIter = random_access_iterator<int*>(buffer);
+    std::ranges::iota_view<random_access_iterator<int*>, IntSentinelWith<random_access_iterator<int*>>> io(
+      outIter, IntSentinelWith<random_access_iterator<int*>>(std::ranges::next(outIter, 8)));
+    auto iter = io.begin();
+    auto sent = io.end();
+    assert(iter - sent == -8);
+    assert(sent - iter == 8);
+  }
+  {
+    auto outIter = random_access_iterator<int*>(buffer);
+    const std::ranges::iota_view<random_access_iterator<int*>, IntSentinelWith<random_access_iterator<int*>>> io(
+      outIter, IntSentinelWith<random_access_iterator<int*>>(std::ranges::next(outIter, 8)));
+    const auto iter = io.begin();
+    const auto sent = io.end();
+    assert(iter - sent == -8);
+    assert(sent - iter == 8);
+  }
+
+  {
+    // The minus operator requires that "W" is an input_or_output_iterator.
+    static_assert(!MinusInvocable<int>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/size.pass.cpp
new file mode 100644
index 0000000..07092b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/size.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto size() const requires see below;
+
+#include <ranges>
+#include <cassert>
+#include <limits>
+
+#include "test_macros.h"
+#include "types.h"
+
+constexpr bool test() {
+  // Both are integer like and both are less than zero.
+  {
+    const std::ranges::iota_view<int, int> io(-10, -5);
+    assert(io.size() == 5);
+  }
+  {
+    const std::ranges::iota_view<int, int> io(-10, -10);
+    assert(io.size() == 0);
+  }
+
+  // Both are integer like and "value_" is less than zero.
+  {
+    const std::ranges::iota_view<int, int> io(-10, 10);
+    assert(io.size() == 20);
+  }
+  {
+// TODO: this is invalid with the current implementation. We need to file an LWG issue to
+// fix this. Essentially the issue is: An int's min and max are -2147483648 and 2147483647
+// which means the negated min cannot be represented as an integer; it needs to be cast to
+// an unsigned type first. That seems to be what the
+// to-unsigned-like(bound_) + to-unsigned-like(-value_))
+// part of https://eel.is/c++draft/range.iota#view-15 is doing, but I think it's doing it
+// wrong. It should be to-unsigned-like(bound_) - to-unsigned-like(value_)) (cast to
+// unsigned first).
+//     const std::ranges::iota_view<int, int> io(std::numeric_limits<int>::min(), std::numeric_limits<int>::max());
+//     assert(io.size() == (static_cast<unsigned>(std::numeric_limits<int>::max()) * 2) + 1);
+  }
+
+  // It is UB for "bound_" to be less than "value_" i.e.: iota_view<int, int> io(10, -5).
+
+  // Both are integer like and neither less than zero.
+  {
+    const std::ranges::iota_view<int, int> io(10, 20);
+    assert(io.size() == 10);
+  }
+  {
+    const std::ranges::iota_view<int, int> io(10, 10);
+    assert(io.size() == 0);
+  }
+  {
+    const std::ranges::iota_view<int, int> io(0, 0);
+    assert(io.size() == 0);
+  }
+  {
+    const std::ranges::iota_view<int, int> io(0, std::numeric_limits<int>::max());
+    constexpr auto imax = std::numeric_limits<int>::max();
+    assert(io.size() == imax);
+  }
+
+  // Neither are integer like.
+  {
+    const std::ranges::iota_view<SomeInt, SomeInt> io(SomeInt(-20), SomeInt(-10));
+    assert(io.size() == 10);
+  }
+  {
+    const std::ranges::iota_view<SomeInt, SomeInt> io(SomeInt(-10), SomeInt(-10));
+    assert(io.size() == 0);
+  }
+  {
+    const std::ranges::iota_view<SomeInt, SomeInt> io(SomeInt(0), SomeInt(0));
+    assert(io.size() == 0);
+  }
+  {
+    const std::ranges::iota_view<SomeInt, SomeInt> io(SomeInt(10), SomeInt(20));
+    assert(io.size() == 10);
+  }
+  {
+    const std::ranges::iota_view<SomeInt, SomeInt> io(SomeInt(10), SomeInt(10));
+    assert(io.size() == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/type.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/type.compile.pass.cpp
new file mode 100644
index 0000000..c68a637
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/type.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <ranges>
+
+// Test that we SFINAE away iota_view<bool>.
+
+template<class T> std::ranges::iota_view<T> f(int);
+template<class T> void f(...);
+
+void test() {
+  f<bool>(42);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/types.h
new file mode 100644
index 0000000..b9ef3e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/types.h
@@ -0,0 +1,216 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_RANGES_RANGE_FACTORIES_RANGE_IOTA_VIEW_TYPES_H
+#define TEST_STD_RANGES_RANGE_FACTORIES_RANGE_IOTA_VIEW_TYPES_H
+
+#include "test_macros.h"
+
+struct SomeInt {
+  using difference_type = int;
+
+  int value_;
+  constexpr explicit SomeInt(int value = 0) : value_(value) {}
+
+  auto operator<=>(const SomeInt&) const = default;
+
+  friend constexpr SomeInt& operator+=(SomeInt &lhs, const SomeInt& rhs) {
+    lhs.value_ += rhs.value_; return lhs;
+  }
+  friend constexpr SomeInt& operator-=(SomeInt &lhs, const SomeInt& rhs) {
+    lhs.value_ -= rhs.value_; return lhs;
+  }
+
+  friend constexpr SomeInt& operator+=(SomeInt &lhs, difference_type rhs) {
+    lhs.value_ += rhs; return lhs;
+  }
+  friend constexpr SomeInt& operator-=(SomeInt &lhs, difference_type rhs) {
+    lhs.value_ -= rhs; return lhs;
+  }
+
+  friend constexpr SomeInt operator+(SomeInt lhs, SomeInt rhs) {
+    return SomeInt{lhs.value_ + rhs.value_};
+  }
+  friend constexpr int operator-(SomeInt lhs, SomeInt rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  friend constexpr SomeInt operator+(SomeInt lhs, difference_type rhs) {
+    return SomeInt{lhs.value_ + rhs};
+  }
+  friend constexpr int operator-(SomeInt lhs, difference_type rhs) {
+    return lhs.value_ - rhs;
+  }
+
+  friend constexpr SomeInt operator+(difference_type lhs, SomeInt rhs) {
+    return SomeInt{lhs + rhs.value_};
+  }
+  friend constexpr int operator-(difference_type lhs, SomeInt rhs) {
+    return lhs - rhs.value_;
+  }
+
+  constexpr SomeInt& operator++() { ++value_; return *this; }
+  constexpr SomeInt  operator++(int) { auto tmp = *this; ++value_; return tmp; }
+  constexpr SomeInt& operator--() { --value_; return *this; }
+  constexpr SomeInt  operator--(int) { auto tmp = *this; --value_; return tmp; }
+};
+
+template<class T>
+struct IntComparableWith {
+  using difference_type = std::iter_difference_t<T>;
+
+  T value_;
+  constexpr explicit IntComparableWith(T value = T()) : value_(value) {}
+
+  friend constexpr bool operator==(IntComparableWith lhs, IntComparableWith rhs) {
+    return lhs.value_ == rhs.value_;
+  }
+  friend constexpr bool operator==(IntComparableWith lhs, T rhs) {
+    return lhs.value_ == rhs;
+  }
+  friend constexpr bool operator==(T lhs, IntComparableWith rhs) {
+    return lhs == rhs.value_;
+  }
+
+  friend constexpr IntComparableWith operator+(IntComparableWith lhs, IntComparableWith rhs) {
+    return IntComparableWith{lhs.value_ + rhs.value_};
+  }
+  friend constexpr difference_type operator-(IntComparableWith lhs, IntComparableWith rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  constexpr IntComparableWith& operator++() { ++value_; return *this; }
+  constexpr IntComparableWith  operator++(int) { auto tmp = *this; ++value_; return tmp; }
+  constexpr IntComparableWith  operator--() { --value_; return *this; }
+};
+template <class T>
+IntComparableWith(T) -> IntComparableWith<T>;
+
+template<class T>
+struct IntSentinelWith {
+  using difference_type = std::iter_difference_t<T>;
+
+  T value_;
+  constexpr explicit IntSentinelWith(T value = T()) : value_(value) {}
+
+  friend constexpr bool operator==(IntSentinelWith lhs, IntSentinelWith rhs) {
+    return lhs.value_ == rhs.value_;
+  }
+  friend constexpr bool operator==(IntSentinelWith lhs, T rhs) {
+    return lhs.value_ == rhs;
+  }
+  friend constexpr bool operator==(T lhs, IntSentinelWith rhs) {
+    return lhs == rhs.value_;
+  }
+
+  friend constexpr IntSentinelWith operator+(IntSentinelWith lhs, IntSentinelWith rhs) {
+    return IntSentinelWith{lhs.value_ + rhs.value_};
+  }
+  friend constexpr difference_type operator-(IntSentinelWith lhs, IntSentinelWith rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+  friend constexpr difference_type operator-(IntSentinelWith lhs, T rhs) {
+    return lhs.value_ - rhs;
+  }
+  friend constexpr difference_type operator-(T lhs, IntSentinelWith rhs) {
+    return lhs - rhs.value_;
+  }
+
+  constexpr IntSentinelWith& operator++() { ++value_; return *this; }
+  constexpr IntSentinelWith  operator++(int) { auto tmp = *this; ++value_; return tmp; }
+  constexpr IntSentinelWith  operator--() { --value_; return *this; }
+};
+template <class T>
+IntSentinelWith(T) -> IntSentinelWith<T>;
+
+struct NotIncrementable {
+  using difference_type = int;
+
+  int value_;
+  constexpr explicit NotIncrementable(int value = 0) : value_(value) {}
+
+  bool operator==(const NotIncrementable&) const = default;
+
+  friend constexpr NotIncrementable& operator+=(NotIncrementable &lhs, const NotIncrementable& rhs) {
+    lhs.value_ += rhs.value_; return lhs;
+  }
+  friend constexpr NotIncrementable& operator-=(NotIncrementable &lhs, const NotIncrementable& rhs) {
+    lhs.value_ -= rhs.value_; return lhs;
+  }
+
+  friend constexpr NotIncrementable operator+(NotIncrementable lhs, NotIncrementable rhs) {
+    return NotIncrementable{lhs.value_ + rhs.value_};
+  }
+  friend constexpr int operator-(NotIncrementable lhs, NotIncrementable rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  constexpr NotIncrementable& operator++()    { ++value_; return *this; }
+  constexpr void              operator++(int) { ++value_;               }
+  constexpr NotIncrementable& operator--()    { --value_; return *this; }
+};
+static_assert(!std::incrementable<NotIncrementable>);
+
+struct NotDecrementable {
+  using difference_type = int;
+
+  int value_;
+  constexpr explicit NotDecrementable(int value = 0) : value_(value) {}
+
+  bool operator==(const NotDecrementable&) const = default;
+
+  friend constexpr NotDecrementable& operator+=(NotDecrementable &lhs, const NotDecrementable& rhs) {
+    lhs.value_ += rhs.value_; return lhs;
+  }
+  friend constexpr NotDecrementable& operator-=(NotDecrementable &lhs, const NotDecrementable& rhs) {
+    lhs.value_ -= rhs.value_; return lhs;
+  }
+
+  friend constexpr NotDecrementable operator+(NotDecrementable lhs, NotDecrementable rhs) {
+    return NotDecrementable{lhs.value_ + rhs.value_};
+  }
+  friend constexpr int operator-(NotDecrementable lhs, NotDecrementable rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  constexpr NotDecrementable& operator++()    { ++value_; return *this; }
+  constexpr void              operator++(int) { ++value_;               }
+};
+
+enum CtorKind { DefaultTo42, ValueCtor };
+
+template<CtorKind CK>
+struct Int42 {
+  using difference_type = int;
+
+  int value_;
+  constexpr explicit Int42(int value) : value_(value) {}
+  constexpr explicit Int42() requires (CK == DefaultTo42)
+    : value_(42) {}
+
+  bool operator==(const Int42&) const = default;
+
+  friend constexpr Int42& operator+=(Int42 &lhs, const Int42& rhs) {
+    lhs.value_ += rhs.value_; return lhs;
+  }
+  friend constexpr Int42& operator-=(Int42 &lhs, const Int42& rhs) {
+    lhs.value_ -= rhs.value_; return lhs;
+  }
+
+  friend constexpr Int42 operator+(Int42 lhs, Int42 rhs) {
+    return Int42{lhs.value_ + rhs.value_};
+  }
+  friend constexpr int operator-(Int42 lhs, Int42 rhs) {
+    return lhs.value_ - rhs.value_;
+  }
+
+  constexpr Int42& operator++()    { ++value_; return *this; }
+  constexpr void   operator++(int) { ++value_;               }
+};
+
+#endif // TEST_STD_RANGES_RANGE_FACTORIES_RANGE_IOTA_VIEW_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/views_iota.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/views_iota.pass.cpp
new file mode 100644
index 0000000..d7310cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.iota.view/views_iota.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// views::iota
+
+#include <ranges>
+#include <cassert>
+#include <concepts>
+
+#include "test_macros.h"
+#include "types.h"
+
+template<class T, class U>
+constexpr void testType(U u) {
+  // Test that this generally does the right thing.
+  // Test with only one argument.
+  {
+    assert(*std::views::iota(T(0)).begin() == T(0));
+  }
+  {
+    const auto io = std::views::iota(T(10));
+    assert(*io.begin() == T(10));
+  }
+  // Test with two arguments.
+  {
+    assert(*std::views::iota(T(0), u).begin() == T(0));
+  }
+  {
+    const auto io = std::views::iota(T(10), u);
+    assert(*io.begin() == T(10));
+  }
+  // Test that we return the correct type.
+  {
+    ASSERT_SAME_TYPE(decltype(std::views::iota(T(10))), std::ranges::iota_view<T>);
+    ASSERT_SAME_TYPE(decltype(std::views::iota(T(10), u)), std::ranges::iota_view<T, U>);
+  }
+}
+
+struct X {};
+
+constexpr bool test() {
+  testType<SomeInt>(SomeInt(10));
+  testType<SomeInt>(IntComparableWith(SomeInt(10)));
+  testType<signed long>(IntComparableWith<signed long>(10));
+  testType<unsigned long>(IntComparableWith<unsigned long>(10));
+  testType<int>(IntComparableWith<int>(10));
+  testType<int>(int(10));
+  testType<unsigned>(unsigned(10));
+  testType<unsigned>(IntComparableWith<unsigned>(10));
+  testType<short>(short(10));
+  testType<short>(IntComparableWith<short>(10));
+  testType<unsigned short>(IntComparableWith<unsigned short>(10));
+
+  {
+    static_assert( std::is_invocable_v<decltype(std::views::iota), int>);
+    static_assert(!std::is_invocable_v<decltype(std::views::iota), X>);
+    static_assert( std::is_invocable_v<decltype(std::views::iota), int, int>);
+    static_assert(!std::is_invocable_v<decltype(std::views::iota), int, X>);
+  }
+  {
+    static_assert(std::same_as<decltype(std::views::iota), decltype(std::ranges::views::iota)>);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/begin.pass.cpp
new file mode 100644
index 0000000..99891bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/begin.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr auto begin();
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "utils.h"
+
+template <class T>
+concept HasBegin = requires(T t) { t.begin(); };
+
+static_assert(HasBegin<std::ranges::istream_view<int>>);
+static_assert(!HasBegin<const std::ranges::istream_view<int>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(HasBegin<std::ranges::wistream_view<int>>);
+static_assert(!HasBegin<const std::ranges::wistream_view<int>>);
+#endif
+
+template <class CharT>
+void test() {
+  // begin should read the first element
+  {
+    auto iss = make_string_stream<CharT>("12    3");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(*it == 12);
+  }
+
+  // empty stream
+  {
+    auto iss = make_string_stream<CharT>("");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(it == isv.end());
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/cpo.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/cpo.pass.cpp
new file mode 100644
index 0000000..1cbbccf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/cpo.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::istream<T>
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "utils.h"
+
+static_assert(!std::is_invocable_v<decltype((std::views::istream<int>))>);
+static_assert(std::is_invocable_v<decltype((std::views::istream<int>)), std::istream&>);
+static_assert(!std::is_invocable_v<decltype((std::views::istream<int>)), const std::istream&>);
+static_assert(!std::is_invocable_v<decltype((std::views::istream<int>)), int>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::is_invocable_v<decltype((std::views::istream<int>)), std::wistream&>);
+static_assert(!std::is_invocable_v<decltype((std::views::istream<int>)), const std::wistream&>);
+#endif
+
+template <class CharT>
+void test() {
+  auto iss = make_string_stream<CharT>("12   3");
+  auto isv = std::views::istream<int>(iss);
+  auto it  = isv.begin();
+  assert(*it == 12);
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/ctor.pass.cpp
new file mode 100644
index 0000000..ff60fbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/ctor.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit basic_istream_view(basic_istream<CharT, Traits>& stream);
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "utils.h"
+
+// test that the constructor is explicit
+static_assert(std::constructible_from<std::ranges::istream_view<int>, std::istream&>);
+static_assert(!std::convertible_to<std::istream&, std::ranges::istream_view<int>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::constructible_from<std::ranges::wistream_view<int>, std::wistream&>);
+static_assert(!std::convertible_to<std::wistream&, std::ranges::wistream_view<int>>);
+#endif
+
+template <class CharT>
+void test() {
+  // test constructor init the stream pointer to the passed one
+  {
+    auto iss = make_string_stream<CharT>("123");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(*it == 123);
+  }
+
+  // LWG 3568. basic_istream_view needs to initialize value_
+  {
+    auto iss = make_string_stream<CharT>("123");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    using Iter = std::ranges::iterator_t<decltype(isv)>;
+    Iter iter{isv};
+    assert(*iter == 0);
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/end.pass.cpp
new file mode 100644
index 0000000..80b1dfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/end.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr default_sentinel_t end() const noexcept;
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "utils.h"
+
+template <class T>
+concept NoexceptEnd =
+    requires(T t) {
+      { t.end() } noexcept;
+    };
+
+static_assert(NoexceptEnd<std::ranges::istream_view<int>>);
+static_assert(NoexceptEnd<const std::ranges::istream_view<int>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(NoexceptEnd<std::ranges::wistream_view<int>>);
+static_assert(NoexceptEnd<const std::ranges::wistream_view<int>>);
+#endif
+
+template <class CharT>
+void test() {
+  auto iss = make_string_stream<CharT>("12");
+  std::ranges::basic_istream_view<int, CharT> isv{iss};
+  [[maybe_unused]] std::same_as<std::default_sentinel_t> auto sent = isv.end();
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/general.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/general.pass.cpp
new file mode 100644
index 0000000..c65f10c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/general.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Some basic examples of how istream_view might be used in the wild. This is a general
+// collection of sample algorithms and functions that try to mock general usage of
+// this view.
+
+#include <algorithm>
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "utils.h"
+
+template <class CharT>
+void test() {
+  auto ints      = make_string_stream<CharT>("0 1  2   3     4");
+  auto oss       = std::basic_ostringstream<CharT>{};
+  auto delimiter = make_string<CharT>("-");
+  std::ranges::copy(
+      std::ranges::basic_istream_view<int, CharT>(ints), std::ostream_iterator<int, CharT>{oss, delimiter.c_str()});
+  auto expected = make_string<CharT>("0-1-2-3-4-");
+  assert(oss.str() == expected);
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/compare.pass.cpp
new file mode 100644
index 0000000..81ae088
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/compare.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// friend bool operator==(const iterator& x, default_sentinel_t);
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "../utils.h"
+
+template <class CharT>
+void test() {
+  // fail to read
+  {
+    auto iss = make_string_stream<CharT>("a123 4");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(it == std::default_sentinel);
+  }
+
+  // iterate through the end
+  {
+    auto iss = make_string_stream<CharT>("123 ");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(it != std::default_sentinel);
+    ++it;
+    assert(it == std::default_sentinel);
+  }
+
+  // empty stream
+  {
+    auto iss = make_string_stream<CharT>("");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(it == std::default_sentinel);
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/ctor.pass.cpp
new file mode 100644
index 0000000..017d11c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/ctor.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit iterator(basic_istream_view& parent) noexcept;
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "../utils.h"
+
+// test that the constructor is explicit
+template <class CharT>
+using IstreamView = std::ranges::basic_istream_view<int, CharT>;
+template <class CharT>
+using Iter = std::ranges::iterator_t<IstreamView<CharT>>;
+
+static_assert(std::constructible_from<Iter<char>, IstreamView<char>&>);
+static_assert(!std::convertible_to<IstreamView<char>&, Iter<char>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::constructible_from<Iter<wchar_t>, IstreamView<wchar_t>&>);
+static_assert(!std::convertible_to<IstreamView<wchar_t>&, Iter<wchar_t>>);
+#endif
+
+// test that the constructor is noexcept
+static_assert(std::is_nothrow_constructible_v<Iter<char>, IstreamView<char>&>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::is_nothrow_constructible_v<Iter<wchar_t>, IstreamView<wchar_t>&>);
+#endif
+
+template <class CharT>
+void test() {
+  auto iss = make_string_stream<CharT>("123");
+  std::ranges::basic_istream_view<int, CharT> isv{iss};
+  Iter<CharT> it{isv};
+  ++it;
+  assert(*it == 123);
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/deref.pass.cpp
new file mode 100644
index 0000000..1cf05f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/deref.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Val& operator*() const;
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "../utils.h"
+
+template <class CharT>
+void test() {
+  // operator* should return correct value
+  {
+    auto iss = make_string_stream<CharT>("1 2 345 ");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it                              = isv.begin();
+    std::same_as<int&> decltype(auto) v1 = *it;
+    assert(v1 == 1);
+  }
+
+  // operator* should return the same reference to the value stored in the view
+  {
+    auto iss = make_string_stream<CharT>("1 2 345 ");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    using Iter = std::ranges::iterator_t<decltype(isv)>;
+
+    Iter it1{isv};
+    Iter it2{isv};
+    assert(&*it1 == &*it2);
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/increment.pass.cpp
new file mode 100644
index 0000000..6675478
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/increment.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator& operator++();
+// void operator++(int);
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "../utils.h"
+
+template <class CharT>
+void test() {
+  // operator ++()
+  {
+    auto iss = make_string_stream<CharT>("1 2 345 ");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(*it == 1);
+
+    std::same_as<decltype(it)&> decltype(auto) it2 = ++it;
+    assert(&it2 == &it);
+    assert(*it2 == 2);
+
+    ++it2;
+    assert(*it2 == 345);
+
+    ++it2;
+    assert(it2 == isv.end());
+  }
+
+  // operator ++(int)
+  {
+    auto iss = make_string_stream<CharT>("1 2 345 ");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it = isv.begin();
+    assert(*it == 1);
+
+    static_assert(std::same_as<decltype(it++), void>);
+    it++;
+    assert(*it == 2);
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/member_types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/member_types.compile.pass.cpp
new file mode 100644
index 0000000..1e9924f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/member_types.compile.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Member typedefs in istream_view<T>::<iterator>.
+
+#include <istream>
+#include <ranges>
+
+#include "test_macros.h"
+
+template <class T>
+concept HasIterCategory = requires { typename T::iterator_category; };
+
+struct MemberIteratorCategory {
+  using iterator_category = std::input_iterator_tag;
+};
+static_assert(HasIterCategory<MemberIteratorCategory>);
+
+template <class Val, class CharT>
+void test() {
+  using Iter = std::ranges::iterator_t<std::ranges::basic_istream_view<Val, CharT>>;
+  static_assert(std::is_same_v<typename Iter::iterator_concept, std::input_iterator_tag>);
+  static_assert(std::is_same_v<typename Iter::difference_type, std::ptrdiff_t>);
+  static_assert(std::is_same_v<typename Iter::value_type, Val>);
+  static_assert(!HasIterCategory<Iter>);
+}
+
+template <class CharT>
+void testOne() {
+  test<int, CharT>();
+  test<long, CharT>();
+  test<double, CharT>();
+  test<CharT, CharT>();
+}
+
+void test() {
+  testOne<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  testOne<wchar_t>();
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/special_op.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/special_op.pass.cpp
new file mode 100644
index 0000000..edcf6eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/iterator/special_op.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+//    iterator(const iterator&) = delete;
+//    iterator(iterator&&) = default;
+//    iterator& operator=(const iterator&) = delete;
+//    iterator& operator=(iterator&&) = default;
+
+#include <cassert>
+#include <ranges>
+#include <sstream>
+
+#include "test_macros.h"
+#include "../utils.h"
+
+template <class CharT>
+using Iter = std::ranges::iterator_t<std::ranges::basic_istream_view<int, CharT>>;
+static_assert(!std::copy_constructible<Iter<char>>);
+static_assert(!std::is_copy_assignable_v<Iter<char>>);
+static_assert(std::move_constructible<Iter<char>>);
+static_assert(std::is_move_assignable_v<Iter<char>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::copy_constructible<Iter<wchar_t>>);
+static_assert(!std::is_copy_assignable_v<Iter<wchar_t>>);
+static_assert(std::move_constructible<Iter<wchar_t>>);
+static_assert(std::is_move_assignable_v<Iter<wchar_t>>);
+#endif
+
+template <class CharT>
+void test() {
+  // test move constructor
+  {
+    auto iss = make_string_stream<CharT>("12   3");
+    std::ranges::basic_istream_view<int, CharT> isv{iss};
+    auto it  = isv.begin();
+    auto it2 = std::move(it);
+    assert(*it2 == 12);
+  }
+
+  // test move assignment
+  {
+    auto iss1 = make_string_stream<CharT>("12   3");
+    std::ranges::basic_istream_view<int, CharT> isv1{iss1};
+    auto iss2 = make_string_stream<CharT>("45   6");
+    std::ranges::basic_istream_view<int, CharT> isv2{iss2};
+
+    auto it1 = isv1.begin();
+    assert(*it1 == 12);
+    it1 = isv2.begin();
+    assert(*it1 == 45);
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/range.concept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/range.concept.compile.pass.cpp
new file mode 100644
index 0000000..9141632
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/range.concept.compile.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// concept checking istream_view
+
+#include <istream>
+#include <ranges>
+
+#include "test_macros.h"
+
+template <class Val, class CharT, class Traits = std::char_traits<CharT>>
+concept HasIstreamView = requires { typename std::ranges::basic_istream_view<Val, CharT, Traits>; };
+
+static_assert(HasIstreamView<int, char>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(HasIstreamView<int, wchar_t>);
+#endif
+
+// Unmovable Val
+struct Unmovable {
+  Unmovable()            = default;
+  Unmovable(Unmovable&&) = delete;
+  template <class CharT>
+  friend std::basic_istream<CharT>& operator>>(std::basic_istream<CharT>& x, const Unmovable&) {
+    return x;
+  }
+};
+static_assert(!HasIstreamView<Unmovable, char>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!HasIstreamView<Unmovable, wchar_t>);
+#endif
+
+// !default_initializable<Val>
+struct NoDefaultCtor {
+  NoDefaultCtor(int) {}
+  friend std::istream& operator>>(std::istream& x, const NoDefaultCtor&) { return x; }
+};
+static_assert(!HasIstreamView<NoDefaultCtor, char>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!HasIstreamView<NoDefaultCtor, wchar_t>);
+#endif
+
+// !stream-extractable<Val, CharT, Traits>
+struct Foo {};
+static_assert(!HasIstreamView<Foo, char>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!HasIstreamView<Foo, wchar_t>);
+#endif
+
+template <class T>
+concept OnlyInputRange = std::ranges::input_range<T> && !std::ranges::forward_range<T>;
+
+static_assert(OnlyInputRange<std::ranges::istream_view<int>>);
+static_assert(OnlyInputRange<std::ranges::istream_view<long>>);
+static_assert(OnlyInputRange<std::ranges::istream_view<double>>);
+static_assert(OnlyInputRange<std::ranges::istream_view<char>>);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(OnlyInputRange<std::ranges::wistream_view<int>>);
+static_assert(OnlyInputRange<std::ranges::wistream_view<long>>);
+static_assert(OnlyInputRange<std::ranges::wistream_view<double>>);
+static_assert(OnlyInputRange<std::ranges::wistream_view<wchar_t>>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/utils.h b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/utils.h
new file mode 100644
index 0000000..254c95b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.istream.view/utils.h
@@ -0,0 +1,17 @@
+#ifndef TEST_STD_RANGES_RANGE_FACTORIES_RANGE_ISTREAM_UTILS_H
+#define TEST_STD_RANGES_RANGE_FACTORIES_RANGE_ISTREAM_UTILS_H
+
+#include <sstream>
+#include <string>
+
+template <class CharT, std::size_t N>
+auto make_string(const char (&in)[N]) {
+  return std::basic_string<CharT>(in + 0, in + (N - 1));
+}
+
+template <class CharT, std::size_t N>
+auto make_string_stream(const char (&in)[N]) {
+  return std::basic_istringstream<CharT>(make_string<CharT>(in));
+}
+
+#endif //TEST_STD_RANGES_RANGE_FACTORIES_RANGE_ISTREAM_UTILS_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/assign.pass.cpp
new file mode 100644
index 0000000..4fe08c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/assign.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Tests that <value_> is a <copyable-box>.
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "test_macros.h"
+
+struct NotAssignable {
+  NotAssignable() = default;
+  NotAssignable(const NotAssignable&) = default;
+  NotAssignable(NotAssignable&&) = default;
+
+  NotAssignable& operator=(const NotAssignable&) = delete;
+  NotAssignable& operator=(NotAssignable&&) = delete;
+};
+
+constexpr bool test() {
+  const std::ranges::single_view<NotAssignable> a;
+  std::ranges::single_view<NotAssignable> b;
+  b = a;
+  b = std::move(a);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/begin.pass.cpp
new file mode 100644
index 0000000..e14da8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/begin.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr T* begin() noexcept;
+// constexpr const T* begin() const noexcept;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Empty {};
+struct BigType { char buffer[64] = {10}; };
+
+constexpr bool test() {
+  {
+    auto sv = std::ranges::single_view<int>(42);
+    assert(*sv.begin() == 42);
+
+    ASSERT_SAME_TYPE(decltype(sv.begin()), int*);
+    static_assert(noexcept(sv.begin()));
+  }
+  {
+    const auto sv = std::ranges::single_view<int>(42);
+    assert(*sv.begin() == 42);
+
+    ASSERT_SAME_TYPE(decltype(sv.begin()), const int*);
+    static_assert(noexcept(sv.begin()));
+  }
+
+  {
+    auto sv = std::ranges::single_view<Empty>(Empty());
+    assert(sv.begin() != nullptr);
+
+    ASSERT_SAME_TYPE(decltype(sv.begin()), Empty*);
+  }
+  {
+    const auto sv = std::ranges::single_view<Empty>(Empty());
+    assert(sv.begin() != nullptr);
+
+    ASSERT_SAME_TYPE(decltype(sv.begin()), const Empty*);
+  }
+
+  {
+    auto sv = std::ranges::single_view<BigType>(BigType());
+    assert(sv.begin()->buffer[0] == 10);
+
+    ASSERT_SAME_TYPE(decltype(sv.begin()), BigType*);
+  }
+  {
+    const auto sv = std::ranges::single_view<BigType>(BigType());
+    assert(sv.begin()->buffer[0] == 10);
+
+    ASSERT_SAME_TYPE(decltype(sv.begin()), const BigType*);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..58362d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/borrowing.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// single_view does not specialize enable_borrowed_range
+
+#include <ranges>
+
+#include "test_range.h"
+
+static_assert(!std::ranges::borrowed_range<std::ranges::single_view<int>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::single_view<int*>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::single_view<BorrowedView>>);
+static_assert(!std::ranges::borrowed_range<std::ranges::single_view<NonBorrowedView>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/cpo.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/cpo.pass.cpp
new file mode 100644
index 0000000..d0cd239
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/cpo.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::views::single
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+#include "MoveOnly.h"
+
+// Can't invoke without arguments.
+static_assert(!std::is_invocable_v<decltype((std::views::single))>);
+// Can't invoke with a move-only type.
+static_assert(!std::is_invocable_v<decltype((std::views::single)), MoveOnly>);
+
+constexpr bool test() {
+  // Lvalue.
+  {
+    int x = 42;
+    std::same_as<std::ranges::single_view<int>> decltype(auto) v = std::views::single(x);
+    assert(v.size() == 1);
+    assert(v.front() == x);
+  }
+
+  // Prvalue.
+  {
+    std::same_as<std::ranges::single_view<int>> decltype(auto) v = std::views::single(42);
+    assert(v.size() == 1);
+    assert(v.front() == 42);
+  }
+
+  // Const lvalue.
+  {
+    const int x = 42;
+    std::same_as<std::ranges::single_view<int>> decltype(auto) v = std::views::single(x);
+    assert(v.size() == 1);
+    assert(v.front() == x);
+  }
+
+  // Xvalue.
+  {
+    int x = 42;
+    std::same_as<std::ranges::single_view<int>> decltype(auto) v = std::views::single(std::move(x));
+    assert(v.size() == 1);
+    assert(v.front() == x);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctad.compile.pass.cpp
new file mode 100644
index 0000000..c9d33c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctad.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   single_view(T) -> single_view<T>;
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+
+struct Empty {};
+
+static_assert(std::same_as<
+  decltype(std::ranges::single_view(Empty())),
+  std::ranges::single_view<Empty>
+>);
+
+static_assert(std::same_as<
+  decltype(std::ranges::single_view(std::declval<Empty&>())),
+  std::ranges::single_view<Empty>
+>);
+
+static_assert(std::same_as<
+  decltype(std::ranges::single_view(std::declval<Empty&&>())),
+  std::ranges::single_view<Empty>
+>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.default.pass.cpp
new file mode 100644
index 0000000..986ebff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.default.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// single_view() requires default_initializable<T> = default;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct BigType { char buffer[64] = {10}; };
+
+template<bool DefaultCtorEnabled>
+struct IsDefaultConstructible {
+  IsDefaultConstructible() requires DefaultCtorEnabled = default;
+};
+
+constexpr bool test() {
+  static_assert( std::default_initializable<std::ranges::single_view<IsDefaultConstructible<true>>>);
+  static_assert(!std::default_initializable<std::ranges::single_view<IsDefaultConstructible<false>>>);
+
+  {
+    std::ranges::single_view<BigType> sv;
+    assert(sv.data()->buffer[0] == 10);
+    assert(sv.size() == 1);
+  }
+  {
+    const std::ranges::single_view<BigType> sv;
+    assert(sv.data()->buffer[0] == 10);
+    assert(sv.size() == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.in_place.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.in_place.pass.cpp
new file mode 100644
index 0000000..caaf137
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.in_place.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class... Args>
+//   requires constructible_from<T, Args...>
+// constexpr explicit single_view(in_place_t, Args&&... args);
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "test_macros.h"
+
+struct TakesTwoInts {
+  int a_, b_;
+  constexpr TakesTwoInts(int a, int b) : a_(a), b_(b) {}
+};
+
+constexpr bool test() {
+  {
+    std::ranges::single_view<TakesTwoInts> sv(std::in_place, 1, 2);
+    assert(sv.data()->a_ == 1);
+    assert(sv.data()->b_ == 2);
+    assert(sv.size() == 1);
+  }
+  {
+    const std::ranges::single_view<TakesTwoInts> sv(std::in_place, 1, 2);
+    assert(sv.data()->a_ == 1);
+    assert(sv.data()->b_ == 2);
+    assert(sv.size() == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.value.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.value.pass.cpp
new file mode 100644
index 0000000..c09fd52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/ctor.value.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr explicit single_view(const T& t);
+// constexpr explicit single_view(T&& t);
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Empty {};
+struct BigType { char buffer[64] = {10}; };
+
+constexpr bool test() {
+  {
+    BigType bt;
+    std::ranges::single_view<BigType> sv(bt);
+    assert(sv.data()->buffer[0] == 10);
+    assert(sv.size() == 1);
+  }
+  {
+    const BigType bt;
+    const std::ranges::single_view<BigType> sv(bt);
+    assert(sv.data()->buffer[0] == 10);
+    assert(sv.size() == 1);
+  }
+
+  {
+    BigType bt;
+    std::ranges::single_view<BigType> sv(std::move(bt));
+    assert(sv.data()->buffer[0] == 10);
+    assert(sv.size() == 1);
+  }
+  {
+    const BigType bt;
+    const std::ranges::single_view<BigType> sv(std::move(bt));
+    assert(sv.data()->buffer[0] == 10);
+    assert(sv.size() == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/data.pass.cpp
new file mode 100644
index 0000000..ed8c7fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/data.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr T* data() noexcept;
+// constexpr const T* data() const noexcept;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Empty {};
+struct BigType { char buffer[64] = {10}; };
+
+constexpr bool test() {
+  {
+    auto sv = std::ranges::single_view<int>(42);
+    assert(*sv.data() == 42);
+
+    ASSERT_SAME_TYPE(decltype(sv.data()), int*);
+    static_assert(noexcept(sv.data()));
+  }
+  {
+    const auto sv = std::ranges::single_view<int>(42);
+    assert(*sv.data() == 42);
+
+    ASSERT_SAME_TYPE(decltype(sv.data()), const int*);
+    static_assert(noexcept(sv.data()));
+  }
+
+  {
+    auto sv = std::ranges::single_view<Empty>(Empty());
+    assert(sv.data() != nullptr);
+
+    ASSERT_SAME_TYPE(decltype(sv.data()), Empty*);
+  }
+  {
+    const auto sv = std::ranges::single_view<Empty>(Empty());
+    assert(sv.data() != nullptr);
+
+    ASSERT_SAME_TYPE(decltype(sv.data()), const Empty*);
+  }
+
+  {
+    auto sv = std::ranges::single_view<BigType>(BigType());
+    assert(sv.data()->buffer[0] == 10);
+
+    ASSERT_SAME_TYPE(decltype(sv.data()), BigType*);
+  }
+  {
+    const auto sv = std::ranges::single_view<BigType>(BigType());
+    assert(sv.data()->buffer[0] == 10);
+
+    ASSERT_SAME_TYPE(decltype(sv.data()), const BigType*);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/end.pass.cpp
new file mode 100644
index 0000000..d3b986e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/end.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr T* end() noexcept;
+// constexpr const T* end() const noexcept;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Empty {};
+struct BigType { char buffer[64] = {10}; };
+
+constexpr bool test() {
+  {
+    auto sv = std::ranges::single_view<int>(42);
+    assert(sv.end() == sv.begin() + 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.end()), int*);
+    static_assert(noexcept(sv.end()));
+  }
+  {
+    const auto sv = std::ranges::single_view<int>(42);
+    assert(sv.end() == sv.begin() + 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.end()), const int*);
+    static_assert(noexcept(sv.end()));
+  }
+
+  {
+    auto sv = std::ranges::single_view<Empty>(Empty());
+    assert(sv.end() == sv.begin() + 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.end()), Empty*);
+  }
+  {
+    const auto sv = std::ranges::single_view<Empty>(Empty());
+    assert(sv.end() == sv.begin() + 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.end()), const Empty*);
+  }
+
+  {
+    auto sv = std::ranges::single_view<BigType>(BigType());
+    assert(sv.end() == sv.begin() + 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.end()), BigType*);
+  }
+  {
+    const auto sv = std::ranges::single_view<BigType>(BigType());
+    assert(sv.end() == sv.begin() + 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.end()), const BigType*);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..549b799
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Test that single_view conforms to range and view concepts.
+
+#include <ranges>
+
+#include <cassert>
+#include <concepts>
+
+#include "test_iterators.h"
+
+struct Empty {};
+
+static_assert(std::ranges::contiguous_range<std::ranges::single_view<Empty>>);
+static_assert(std::ranges::contiguous_range<const std::ranges::single_view<Empty>>);
+static_assert(std::ranges::view<std::ranges::single_view<Empty>>);
+static_assert(std::ranges::view<std::ranges::single_view<const Empty>>);
+static_assert(std::ranges::contiguous_range<const std::ranges::single_view<const Empty>>);
+static_assert(std::ranges::view<std::ranges::single_view<int>>);
+static_assert(std::ranges::view<std::ranges::single_view<const int>>);
+static_assert(std::ranges::contiguous_range<const std::ranges::single_view<const int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/size.pass.cpp
new file mode 100644
index 0000000..7d6a72d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.factories/range.single.view/size.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// static constexpr size_t size() noexcept;
+
+#include <ranges>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    auto sv = std::ranges::single_view<int>(42);
+    assert(sv.size() == 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.size()), size_t);
+    static_assert(noexcept(sv.size()));
+  }
+  {
+    const auto sv = std::ranges::single_view<int>(42);
+    assert(sv.size() == 1);
+
+    ASSERT_SAME_TYPE(decltype(sv.size()), size_t);
+    static_assert(noexcept(sv.size()));
+  }
+  {
+    auto sv = std::ranges::single_view<int>(42);
+    assert(std::ranges::size(sv) == 1);
+
+    ASSERT_SAME_TYPE(decltype(std::ranges::size(sv)), size_t);
+    static_assert(noexcept(std::ranges::size(sv)));
+  }
+  {
+    const auto sv = std::ranges::single_view<int>(42);
+    assert(std::ranges::size(sv) == 1);
+
+    ASSERT_SAME_TYPE(decltype(std::ranges::size(sv)), size_t);
+    static_assert(noexcept(std::ranges::size(sv)));
+  }
+
+  // Test that it's static.
+  {
+    assert(std::ranges::single_view<int>::size() == 1);
+
+    ASSERT_SAME_TYPE(decltype(std::ranges::single_view<int>::size()), size_t);
+    static_assert(noexcept(std::ranges::single_view<int>::size()));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/borrowed_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/borrowed_range.compile.pass.cpp
new file mode 100644
index 0000000..e362def
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/borrowed_range.compile.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept borrowed_range;
+
+#include <ranges>
+
+struct NotRange {
+  int begin() const;
+  int end() const;
+};
+
+struct Range {
+  int *begin();
+  int *end();
+};
+
+struct ConstRange {
+  int *begin() const;
+  int *end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  int *end() const;
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+
+static_assert(!std::ranges::borrowed_range<NotRange>);
+static_assert(!std::ranges::borrowed_range<NotRange&>);
+static_assert(!std::ranges::borrowed_range<const NotRange>);
+static_assert(!std::ranges::borrowed_range<const NotRange&>);
+static_assert(!std::ranges::borrowed_range<NotRange&&>);
+
+static_assert(!std::ranges::borrowed_range<Range>);
+static_assert( std::ranges::borrowed_range<Range&>);
+static_assert(!std::ranges::borrowed_range<const Range>);
+static_assert(!std::ranges::borrowed_range<const Range&>);
+static_assert(!std::ranges::borrowed_range<Range&&>);
+
+static_assert(!std::ranges::borrowed_range<ConstRange>);
+static_assert( std::ranges::borrowed_range<ConstRange&>);
+static_assert(!std::ranges::borrowed_range<const ConstRange>);
+static_assert( std::ranges::borrowed_range<const ConstRange&>);
+static_assert(!std::ranges::borrowed_range<ConstRange&&>);
+
+static_assert( std::ranges::borrowed_range<BorrowedRange>);
+static_assert( std::ranges::borrowed_range<BorrowedRange&>);
+static_assert( std::ranges::borrowed_range<const BorrowedRange>);
+static_assert( std::ranges::borrowed_range<const BorrowedRange&>);
+static_assert( std::ranges::borrowed_range<BorrowedRange&&>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/borrowed_range.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/borrowed_range.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..3dca6cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/borrowed_range.subsumption.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept borrowed_range;
+
+#include <ranges>
+
+template <std::ranges::range R>
+consteval bool check_subsumption() {
+  return false;
+}
+
+template <std::ranges::borrowed_range R>
+consteval bool check_subsumption() {
+  return true;
+}
+
+static_assert(check_subsumption<int (&)[8]>());
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/enable_borrowed_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/enable_borrowed_range.compile.pass.cpp
new file mode 100644
index 0000000..5035981
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/enable_borrowed_range.compile.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+// template<class>
+//  inline constexpr bool enable_borrowed_range = false;
+
+#include <ranges>
+#include <array>
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <map>
+#include <queue>
+#include <set>
+#include <stack>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+#include "test_macros.h"
+
+struct S {};
+
+void test() {
+  using std::ranges::enable_borrowed_range;
+  static_assert(!enable_borrowed_range<char>);
+  static_assert(!enable_borrowed_range<int>);
+  static_assert(!enable_borrowed_range<double>);
+  static_assert(!enable_borrowed_range<S>);
+
+  // Sequence containers
+  static_assert(!enable_borrowed_range<std::array<int, 0> >);
+  static_assert(!enable_borrowed_range<std::array<int, 42> >);
+  static_assert(!enable_borrowed_range<std::deque<int> >);
+  static_assert(!enable_borrowed_range<std::forward_list<int> >);
+  static_assert(!enable_borrowed_range<std::list<int> >);
+  static_assert(!enable_borrowed_range<std::vector<int> >);
+
+  // Associative containers
+  static_assert(!enable_borrowed_range<std::set<int> >);
+  static_assert(!enable_borrowed_range<std::map<int, int> >);
+  static_assert(!enable_borrowed_range<std::multiset<int> >);
+  static_assert(!enable_borrowed_range<std::multimap<int, int> >);
+
+  // Unordered associative containers
+  static_assert(!enable_borrowed_range<std::unordered_set<int> >);
+  static_assert(!enable_borrowed_range<std::unordered_map<int, int> >);
+  static_assert(!enable_borrowed_range<std::unordered_multiset<int> >);
+  static_assert(!enable_borrowed_range<std::unordered_multimap<int, int> >);
+
+  // Container adaptors
+  static_assert(!enable_borrowed_range<std::stack<int> >);
+  static_assert(!enable_borrowed_range<std::queue<int> >);
+  static_assert(!enable_borrowed_range<std::priority_queue<int> >);
+
+  // Both std::span and std::string_view have their own test.
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/helper_aliases.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/helper_aliases.compile.pass.cpp
new file mode 100644
index 0000000..1cc9403
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/helper_aliases.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<range R>
+// using range_difference_t = iter_difference_t<iterator_t<R>>;
+
+// template<range R>
+// using range_value_t = iter_value_t<iterator_t<R>>;
+
+// template<range R>
+// using range_reference_t = iter_reference_t<iterator_t<R>>;
+
+// template<range R>
+// using range_rvalue_reference_t = iter_rvalue_reference_t<iterator_t<R>>;
+
+#include <ranges>
+
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+
+
+static_assert(std::same_as<std::ranges::range_difference_t<test_range<cpp20_input_iterator> >, std::iter_difference_t<int*> >);
+static_assert(std::same_as<std::ranges::range_value_t<test_range<cpp20_input_iterator> >, std::iter_value_t<int*> >);
+static_assert(std::same_as<std::ranges::range_reference_t<test_range<cpp20_input_iterator> >, std::iter_reference_t<int*> >);
+static_assert(std::same_as<std::ranges::range_rvalue_reference_t<test_range<cpp20_input_iterator> >, std::iter_rvalue_reference_t<int*> >);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/iterator_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/iterator_t.compile.pass.cpp
new file mode 100644
index 0000000..c61006c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/iterator_t.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// using iterator_t = decltype(ranges::begin(declval<T&>()));
+
+#include <ranges>
+
+#include <concepts>
+
+#include "test_range.h"
+
+
+
+static_assert(std::same_as<std::ranges::iterator_t<test_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);
+static_assert(std::same_as<std::ranges::iterator_t<test_range<cpp17_input_iterator> const>, cpp17_input_iterator<int const*> >);
+
+static_assert(std::same_as<std::ranges::iterator_t<test_non_const_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);
+
+static_assert(std::same_as<std::ranges::iterator_t<test_common_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);
+static_assert(std::same_as<std::ranges::iterator_t<test_common_range<cpp17_input_iterator> const>, cpp17_input_iterator<int const*> >);
+
+static_assert(std::same_as<std::ranges::iterator_t<test_non_const_common_range<cpp17_input_iterator> >, cpp17_input_iterator<int*> >);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/range.compile.pass.cpp
new file mode 100644
index 0000000..5b993b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/range.compile.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept range;
+
+#include <ranges>
+
+#include <vector>
+
+#include "test_range.h"
+
+
+
+static_assert(std::ranges::range<test_range<cpp20_input_iterator> >);
+
+struct incompatible_iterators {
+  int* begin();
+  long* end();
+};
+static_assert(!std::ranges::range<incompatible_iterators>);
+
+struct int_begin_int_end {
+  int begin();
+  int end();
+};
+static_assert(!std::ranges::range<int_begin_int_end>);
+
+struct iterator_begin_int_end {
+  int* begin();
+  int end();
+};
+static_assert(!std::ranges::range<iterator_begin_int_end>);
+
+struct int_begin_iterator_end {
+  int begin();
+  int* end();
+};
+static_assert(!std::ranges::range<int_begin_iterator_end>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::ranges::range<Holder<Incomplete>*>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/range_size_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/range_size_t.compile.pass.cpp
new file mode 100644
index 0000000..04cfb29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/range_size_t.compile.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<sized_range R>
+// using range_size_t = decltype(ranges::size(declval<R&>()));
+
+#include <ranges>
+#include <concepts>
+#include <cstddef>
+
+#include "test_iterators.h"
+
+template<class T>
+concept has_range_size_t = requires { typename std::ranges::range_size_t<T>; };
+
+struct A { int *begin(); int *end(); short size(); };
+static_assert(std::same_as<std::ranges::range_size_t<A>, short>);
+static_assert(std::same_as<std::ranges::range_size_t<A&>, short>);
+static_assert(std::same_as<std::ranges::range_size_t<A&&>, short>);
+static_assert(!has_range_size_t<const A>);
+static_assert(!has_range_size_t<const A&>);
+static_assert(!has_range_size_t<const A&&>);
+
+struct B { int *begin(); int *end(); };
+static_assert(std::same_as<std::ranges::range_size_t<B>, std::size_t>);
+static_assert(std::same_as<std::ranges::range_size_t<B&>, std::size_t>);
+static_assert(std::same_as<std::ranges::range_size_t<B&&>, std::size_t>);
+static_assert(!has_range_size_t<const B>);
+static_assert(!has_range_size_t<const B&>);
+static_assert(!has_range_size_t<const B&&>);
+
+struct C { bidirectional_iterator<int*> begin(); bidirectional_iterator<int*> end(); };
+static_assert(!has_range_size_t<C>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/sentinel_t.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/sentinel_t.compile.pass.cpp
new file mode 100644
index 0000000..07d6160
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.range/sentinel_t.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<range _Rp>
+// using sentinel_t = decltype(ranges::end(declval<_Rp&>()));
+
+#include <ranges>
+
+#include <concepts>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+
+
+static_assert(std::same_as<std::ranges::sentinel_t<test_range<cpp20_input_iterator> >, sentinel>);
+static_assert(std::same_as<std::ranges::sentinel_t<test_range<cpp20_input_iterator> const>, sentinel>);
+static_assert(std::same_as<std::ranges::sentinel_t<test_non_const_range<cpp20_input_iterator> >, sentinel>);
+static_assert(std::same_as<std::ranges::sentinel_t<test_common_range<forward_iterator> >, forward_iterator<int*> >);
+static_assert(std::same_as<std::ranges::sentinel_t<test_common_range<forward_iterator> const>, forward_iterator<int const*> >);
+static_assert(std::same_as<std::ranges::sentinel_t<test_non_const_common_range<forward_iterator> >, forward_iterator<int*> >);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/bidirectional_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/bidirectional_range.compile.pass.cpp
new file mode 100644
index 0000000..915a4f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/bidirectional_range.compile.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept bidirectional_range;
+
+#include <ranges>
+
+#include "test_range.h"
+
+template <template <class...> class I>
+constexpr bool check_bidirectional_range() {
+  constexpr bool result = std::ranges::bidirectional_range<test_range<I> >;
+  static_assert(std::ranges::bidirectional_range<test_range<I> const> == result);
+  static_assert(std::ranges::bidirectional_range<test_non_const_common_range<I> > == result);
+  static_assert(std::ranges::bidirectional_range<test_non_const_range<I> > == result);
+  static_assert(std::ranges::bidirectional_range<test_common_range<I> > == result);
+  static_assert(std::ranges::bidirectional_range<test_common_range<I> const> == result);
+  static_assert(!std::ranges::bidirectional_range<test_non_const_common_range<I> const>);
+  static_assert(!std::ranges::bidirectional_range<test_non_const_range<I> const>);
+  return result;
+}
+
+static_assert(!check_bidirectional_range<cpp17_input_iterator>());
+static_assert(!check_bidirectional_range<cpp20_input_iterator>());
+static_assert(!check_bidirectional_range<forward_iterator>());
+static_assert(check_bidirectional_range<bidirectional_iterator>());
+static_assert(check_bidirectional_range<random_access_iterator>());
+static_assert(check_bidirectional_range<contiguous_iterator>());
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::bidirectional_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::bidirectional_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::bidirectional_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::bidirectional_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::bidirectional_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::bidirectional_range<Holder<Incomplete>* const&&>);
+
+static_assert( std::ranges::bidirectional_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::bidirectional_range<Holder<Incomplete>*(&)[10]>);
+static_assert( std::ranges::bidirectional_range<Holder<Incomplete>*(&&)[10]>);
+static_assert( std::ranges::bidirectional_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::bidirectional_range<Holder<Incomplete>* const(&)[10]>);
+static_assert( std::ranges::bidirectional_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/common_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/common_range.compile.pass.cpp
new file mode 100644
index 0000000..a546cfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/common_range.compile.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept common_range;
+
+#include <ranges>
+
+#include "test_iterators.h"
+
+template<class It>             struct Common { It begin() const; It end() const; };
+template<class It>             struct NonCommon { It begin() const; sentinel_wrapper<It> end() const; };
+template<class It, class Sent> struct Range { It begin() const; Sent end() const; };
+
+static_assert(!std::ranges::common_range<Common<cpp17_input_iterator<int*>>>); // not a sentinel for itself
+static_assert(!std::ranges::common_range<Common<cpp20_input_iterator<int*>>>); // not a sentinel for itself
+static_assert( std::ranges::common_range<Common<forward_iterator<int*>>>);
+static_assert( std::ranges::common_range<Common<bidirectional_iterator<int*>>>);
+static_assert( std::ranges::common_range<Common<random_access_iterator<int*>>>);
+static_assert( std::ranges::common_range<Common<contiguous_iterator<int*>>>);
+static_assert( std::ranges::common_range<Common<int*>>);
+
+static_assert(!std::ranges::common_range<NonCommon<cpp17_input_iterator<int*>>>);
+static_assert(!std::ranges::common_range<NonCommon<cpp20_input_iterator<int*>>>);
+static_assert(!std::ranges::common_range<NonCommon<forward_iterator<int*>>>);
+static_assert(!std::ranges::common_range<NonCommon<bidirectional_iterator<int*>>>);
+static_assert(!std::ranges::common_range<NonCommon<random_access_iterator<int*>>>);
+static_assert(!std::ranges::common_range<NonCommon<contiguous_iterator<int*>>>);
+static_assert(!std::ranges::common_range<NonCommon<int*>>);
+
+// Test when begin() and end() only differ by their constness.
+static_assert(!std::ranges::common_range<Range<int*, int const*>>);
+
+// Simple test with a sized_sentinel.
+static_assert(!std::ranges::common_range<Range<int*, sized_sentinel<int*>>>);
+
+// Make sure cv-qualification doesn't impact the concept when begin() and end() have matching qualifiers.
+static_assert( std::ranges::common_range<Common<forward_iterator<int*>> const>);
+static_assert(!std::ranges::common_range<NonCommon<forward_iterator<int*>> const>);
+
+// Test with a range that's a common_range only when const-qualified.
+struct Range1 {
+  int* begin();
+  int const* begin() const;
+  int const* end() const;
+};
+static_assert(!std::ranges::common_range<Range1>);
+static_assert( std::ranges::common_range<Range1 const>);
+
+// Test with a range that's a common_range only when not const-qualified.
+struct Range2 {
+  int* begin() const;
+  int* end();
+  int const* end() const;
+};
+static_assert( std::ranges::common_range<Range2>);
+static_assert(!std::ranges::common_range<Range2 const>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::common_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::common_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::common_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::common_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::common_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::common_range<Holder<Incomplete>* const&&>);
+
+static_assert( std::ranges::common_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::common_range<Holder<Incomplete>*(&)[10]>);
+static_assert( std::ranges::common_range<Holder<Incomplete>*(&&)[10]>);
+static_assert( std::ranges::common_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::common_range<Holder<Incomplete>* const(&)[10]>);
+static_assert( std::ranges::common_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/contiguous_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/contiguous_range.compile.pass.cpp
new file mode 100644
index 0000000..eecefd1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/contiguous_range.compile.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept contiguous_range;
+
+#include <ranges>
+
+#include "test_range.h"
+#include "test_iterators.h"
+
+namespace ranges = std::ranges;
+
+template <template <class...> class I>
+constexpr bool check_range() {
+  constexpr bool result = ranges::contiguous_range<test_range<I> >;
+  static_assert(ranges::contiguous_range<test_range<I> const> == result);
+  static_assert(ranges::contiguous_range<test_non_const_common_range<I> > == result);
+  static_assert(ranges::contiguous_range<test_non_const_range<I> > == result);
+  static_assert(ranges::contiguous_range<test_common_range<I> > == result);
+  static_assert(ranges::contiguous_range<test_common_range<I> const> == result);
+  static_assert(!ranges::contiguous_range<test_non_const_common_range<I> const>);
+  static_assert(!ranges::contiguous_range<test_non_const_range<I> const>);
+  return result;
+}
+
+static_assert(!check_range<cpp20_input_iterator>());
+static_assert(!check_range<forward_iterator>());
+static_assert(!check_range<bidirectional_iterator>());
+static_assert(!check_range<random_access_iterator>());
+static_assert(check_range<contiguous_iterator>());
+
+struct ContiguousWhenNonConst {
+    const int *begin() const;
+    const int *end() const;
+    int *begin();
+    int *end();
+    int *data() const;
+};
+static_assert( std::ranges::contiguous_range<ContiguousWhenNonConst>);
+static_assert( std::ranges::random_access_range<const ContiguousWhenNonConst>);
+static_assert(!std::ranges::contiguous_range<const ContiguousWhenNonConst>);
+
+struct ContiguousWhenConst {
+    const int *begin() const;
+    const int *end() const;
+    int *begin();
+    int *end();
+    const int *data() const;
+};
+static_assert( std::ranges::contiguous_range<const ContiguousWhenConst>);
+static_assert( std::ranges::random_access_range<ContiguousWhenConst>);
+static_assert(!std::ranges::contiguous_range<ContiguousWhenConst>);
+
+struct DataFunctionWrongReturnType {
+    const int *begin() const;
+    const int *end() const;
+    const char *data() const;
+};
+static_assert( std::ranges::random_access_range<DataFunctionWrongReturnType>);
+static_assert(!std::ranges::contiguous_range<DataFunctionWrongReturnType>);
+
+struct WrongObjectness {
+    const int *begin() const;
+    const int *end() const;
+    void *data() const;
+};
+static_assert(std::ranges::contiguous_range<WrongObjectness>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::contiguous_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::contiguous_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::contiguous_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::contiguous_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::contiguous_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::contiguous_range<Holder<Incomplete>* const&&>);
+
+static_assert( std::ranges::contiguous_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::contiguous_range<Holder<Incomplete>*(&)[10]>);
+static_assert( std::ranges::contiguous_range<Holder<Incomplete>*(&&)[10]>);
+static_assert( std::ranges::contiguous_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::contiguous_range<Holder<Incomplete>* const(&)[10]>);
+static_assert( std::ranges::contiguous_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/forward_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/forward_range.compile.pass.cpp
new file mode 100644
index 0000000..e35c83e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/forward_range.compile.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept forward_range;
+
+#include <ranges>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+template <template <class...> class I>
+constexpr bool check_forward_range() {
+  constexpr bool result = std::ranges::forward_range<test_range<I> >;
+  static_assert(std::ranges::forward_range<test_range<I> const> == result);
+  static_assert(std::ranges::forward_range<test_non_const_common_range<I> > == result);
+  static_assert(std::ranges::forward_range<test_non_const_range<I> > == result);
+  static_assert(std::ranges::forward_range<test_common_range<I> > == result);
+  static_assert(std::ranges::forward_range<test_common_range<I> const> == result);
+  static_assert(!std::ranges::forward_range<test_non_const_common_range<I> const>);
+  static_assert(!std::ranges::forward_range<test_non_const_range<I> const>);
+  return result;
+}
+
+static_assert(!check_forward_range<cpp17_input_iterator>());
+static_assert(!check_forward_range<cpp20_input_iterator>());
+static_assert(check_forward_range<forward_iterator>());
+static_assert(check_forward_range<bidirectional_iterator>());
+static_assert(check_forward_range<random_access_iterator>());
+static_assert(check_forward_range<contiguous_iterator>());
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::forward_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::forward_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::forward_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::forward_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::forward_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::forward_range<Holder<Incomplete>* const&&>);
+
+static_assert( std::ranges::forward_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::forward_range<Holder<Incomplete>*(&)[10]>);
+static_assert( std::ranges::forward_range<Holder<Incomplete>*(&&)[10]>);
+static_assert( std::ranges::forward_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::forward_range<Holder<Incomplete>* const(&)[10]>);
+static_assert( std::ranges::forward_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/input_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/input_range.compile.pass.cpp
new file mode 100644
index 0000000..e60a07a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/input_range.compile.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept input_range;
+
+#include <ranges>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+static_assert(std::ranges::input_range<test_range<cpp17_input_iterator> >);
+static_assert(std::ranges::input_range<test_range<cpp17_input_iterator> const>);
+
+static_assert(std::ranges::input_range<test_range<cpp20_input_iterator> >);
+static_assert(std::ranges::input_range<test_range<cpp20_input_iterator> const>);
+
+static_assert(std::ranges::input_range<test_non_const_range<cpp17_input_iterator> >);
+static_assert(std::ranges::input_range<test_non_const_range<cpp20_input_iterator> >);
+
+static_assert(!std::ranges::input_range<test_non_const_range<cpp17_input_iterator> const>);
+static_assert(!std::ranges::input_range<test_non_const_range<cpp20_input_iterator> const>);
+
+static_assert(std::ranges::input_range<test_common_range<forward_iterator> >);
+static_assert(!std::ranges::input_range<test_common_range<cpp20_input_iterator> >);
+
+static_assert(std::ranges::input_range<test_common_range<forward_iterator> const>);
+static_assert(!std::ranges::input_range<test_common_range<cpp20_input_iterator> const>);
+
+static_assert(std::ranges::input_range<test_non_const_common_range<forward_iterator> >);
+static_assert(!std::ranges::input_range<test_non_const_common_range<cpp20_input_iterator> >);
+
+static_assert(!std::ranges::input_range<test_non_const_common_range<forward_iterator> const>);
+static_assert(!std::ranges::input_range<test_non_const_common_range<cpp20_input_iterator> const>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::input_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::input_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::input_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::input_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::input_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::input_range<Holder<Incomplete>* const&&>);
+
+static_assert( std::ranges::input_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::input_range<Holder<Incomplete>*(&)[10]>);
+static_assert( std::ranges::input_range<Holder<Incomplete>*(&&)[10]>);
+static_assert( std::ranges::input_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::input_range<Holder<Incomplete>* const(&)[10]>);
+static_assert( std::ranges::input_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/output_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/output_range.compile.pass.cpp
new file mode 100644
index 0000000..daa207a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/output_range.compile.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R, class T>
+// concept output_range;
+
+#include <ranges>
+
+#include <iterator>
+#include "test_iterators.h"
+#include "test_range.h"
+
+struct T { };
+
+// Satisfied when it's a range and has the right iterator
+struct GoodRange {
+    cpp17_output_iterator<T*> begin();
+    sentinel end();
+};
+static_assert(std::ranges::range<GoodRange>);
+static_assert(std::output_iterator<std::ranges::iterator_t<GoodRange>, T>);
+static_assert(std::ranges::output_range<GoodRange, T>);
+
+// Not satisfied when it's not a range
+struct NotRange {
+    cpp17_output_iterator<T*> begin();
+};
+static_assert(!std::ranges::range<NotRange>);
+static_assert( std::output_iterator<std::ranges::iterator_t<NotRange>, T>);
+static_assert(!std::ranges::output_range<NotRange, T>);
+
+// Not satisfied when the iterator is not an output_iterator
+struct RangeWithBadIterator {
+    cpp17_input_iterator<T const*> begin();
+    sentinel end();
+};
+static_assert( std::ranges::range<RangeWithBadIterator>);
+static_assert(!std::output_iterator<std::ranges::iterator_t<RangeWithBadIterator>, T>);
+static_assert(!std::ranges::output_range<RangeWithBadIterator, T>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::output_range<Holder<Incomplete>*, Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>*&, Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>*&&, Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>* const, Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>* const&, Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>* const&&, Holder<Incomplete>*>);
+
+static_assert( std::ranges::output_range<Holder<Incomplete>*[10], Holder<Incomplete>*>);
+static_assert( std::ranges::output_range<Holder<Incomplete>*(&)[10], Holder<Incomplete>*>);
+static_assert( std::ranges::output_range<Holder<Incomplete>*(&&)[10], Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>* const[10], Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>* const(&)[10], Holder<Incomplete>*>);
+static_assert(!std::ranges::output_range<Holder<Incomplete>* const(&&)[10], Holder<Incomplete>*>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/random_access_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/random_access_range.compile.pass.cpp
new file mode 100644
index 0000000..ce89fb5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/random_access_range.compile.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept random_access_range;
+
+#include <ranges>
+
+#include "test_range.h"
+#include "test_iterators.h"
+
+namespace ranges = std::ranges;
+
+template <template <class...> class I>
+constexpr bool check_range() {
+  constexpr bool result = ranges::random_access_range<test_range<I> >;
+  static_assert(ranges::random_access_range<test_range<I> const> == result);
+  static_assert(ranges::random_access_range<test_non_const_common_range<I> > == result);
+  static_assert(ranges::random_access_range<test_non_const_range<I> > == result);
+  static_assert(ranges::random_access_range<test_common_range<I> > == result);
+  static_assert(ranges::random_access_range<test_common_range<I> const> == result);
+  static_assert(!ranges::random_access_range<test_non_const_common_range<I> const>);
+  static_assert(!ranges::random_access_range<test_non_const_range<I> const>);
+  return result;
+}
+
+static_assert(!check_range<cpp20_input_iterator>());
+static_assert(!check_range<forward_iterator>());
+static_assert(!check_range<bidirectional_iterator>());
+static_assert(check_range<random_access_iterator>());
+static_assert(check_range<contiguous_iterator>());
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::random_access_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::random_access_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::random_access_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::random_access_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::random_access_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::random_access_range<Holder<Incomplete>* const&&>);
+
+static_assert( std::ranges::random_access_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::random_access_range<Holder<Incomplete>*(&)[10]>);
+static_assert( std::ranges::random_access_range<Holder<Incomplete>*(&&)[10]>);
+static_assert( std::ranges::random_access_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::random_access_range<Holder<Incomplete>* const(&)[10]>);
+static_assert( std::ranges::random_access_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..23d447f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/subsumption.compile.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept input_iterator;
+
+// std::ranges::forward_range
+
+#include <ranges>
+
+#include <iterator>
+
+struct range {
+  int* begin();
+  int* end();
+};
+
+template<std::ranges::range R>
+requires std::input_iterator<std::ranges::iterator_t<R>>
+constexpr bool check_input_range_subsumption() {
+  return false;
+}
+
+template<std::ranges::input_range>
+requires true
+constexpr bool check_input_range_subsumption() {
+  return true;
+}
+
+static_assert(check_input_range_subsumption<range>());
+
+template<std::ranges::input_range R>
+requires std::forward_iterator<std::ranges::iterator_t<R>>
+constexpr bool check_forward_range_subsumption() {
+  return false;
+}
+
+template<std::ranges::forward_range>
+requires true
+constexpr bool check_forward_range_subsumption() {
+  return true;
+}
+
+static_assert(check_forward_range_subsumption<range>());
+
+template<std::ranges::forward_range R>
+requires std::bidirectional_iterator<std::ranges::iterator_t<R>>
+constexpr bool check_bidirectional_range_subsumption() {
+  return false;
+}
+
+template<std::ranges::bidirectional_range>
+requires true
+constexpr bool check_bidirectional_range_subsumption() {
+  return true;
+}
+
+static_assert(check_bidirectional_range_subsumption<range>());
+
+template<std::ranges::bidirectional_range R>
+requires std::random_access_iterator<std::ranges::iterator_t<R>>
+constexpr bool check_random_access_range_subsumption() {
+  return false;
+}
+
+template<std::ranges::random_access_range>
+requires true
+constexpr bool check_random_access_range_subsumption() {
+  return true;
+}
+
+static_assert(check_random_access_range_subsumption<range>());
+
+template<std::ranges::random_access_range R>
+requires std::random_access_iterator<std::ranges::iterator_t<R>>
+constexpr bool check_contiguous_range_subsumption() {
+  return false;
+}
+
+template<std::ranges::contiguous_range>
+requires true
+constexpr bool check_contiguous_range_subsumption() {
+  return true;
+}
+
+static_assert(check_contiguous_range_subsumption<range>());
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/viewable_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/viewable_range.compile.pass.cpp
new file mode 100644
index 0000000..9dcfacc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.refinements/viewable_range.compile.pass.cpp
@@ -0,0 +1,184 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class R>
+// concept viewable_range;
+
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_range.h"
+
+// The constraints we have in viewable_range are:
+//  range<T>
+//  view<remove_cvref_t<T>>
+//  constructible_from<remove_cvref_t<T>, T>
+//  lvalue_reference_t<T> || movable<remove_reference_t<T>>
+//  is-initializer-list<T>
+//
+// We test all the relevant combinations of satisfying/not satisfying those constraints.
+
+// viewable_range<T> is not satisfied for (range=false, view=*, constructible_from=*, lvalue-or-movable=*)
+struct T1 { };
+static_assert(!std::ranges::range<T1>);
+
+static_assert(!std::ranges::viewable_range<T1>);
+static_assert(!std::ranges::viewable_range<T1&>);
+static_assert(!std::ranges::viewable_range<T1&&>);
+static_assert(!std::ranges::viewable_range<T1 const>);
+static_assert(!std::ranges::viewable_range<T1 const&>);
+static_assert(!std::ranges::viewable_range<T1 const&&>);
+
+// viewable_range<T> is satisfied for (range=true, view=true, constructible_from=true, lvalue-or-movable=true)
+struct T2 : test_range<cpp20_input_iterator>, std::ranges::view_base {
+  T2(T2 const&) = default;
+};
+static_assert(std::ranges::range<T2>);
+static_assert(std::ranges::view<T2>);
+static_assert(std::constructible_from<T2, T2>);
+
+static_assert(std::ranges::viewable_range<T2>);
+static_assert(std::ranges::viewable_range<T2&>);
+static_assert(std::ranges::viewable_range<T2&&>);
+static_assert(std::ranges::viewable_range<T2 const>);
+static_assert(std::ranges::viewable_range<T2 const&>);
+static_assert(std::ranges::viewable_range<T2 const&&>);
+
+// viewable_range<T> is satisfied for (range=true, view=true, constructible_from=true, lvalue-or-movable=false)
+struct T3 : test_range<cpp20_input_iterator>, std::ranges::view_base {
+  T3(T3 const&) = default;
+};
+static_assert(std::ranges::range<T3>);
+static_assert(std::ranges::view<T3>);
+static_assert(std::constructible_from<T3, T3>);
+
+static_assert(std::ranges::viewable_range<T3>);
+static_assert(std::ranges::viewable_range<T3&>);
+static_assert(std::ranges::viewable_range<T3&&>);
+static_assert(std::ranges::viewable_range<T3 const>);
+static_assert(std::ranges::viewable_range<T3 const&>);
+static_assert(std::ranges::viewable_range<T3 const&&>);
+
+// viewable_range<T> is not satisfied for (range=true, view=true, constructible_from=false, lvalue-or-movable=true)
+struct T4 : test_range<cpp20_input_iterator>, std::ranges::view_base {
+  T4(T4 const&) = delete;
+  T4(T4&&) = default;             // necessary to model view
+  T4& operator=(T4&&) = default;  // necessary to model view
+};
+static_assert(std::ranges::range<T4 const&>);
+static_assert(std::ranges::view<std::remove_cvref_t<T4 const&>>);
+static_assert(!std::constructible_from<std::remove_cvref_t<T4 const&>, T4 const&>);
+
+static_assert(!std::ranges::viewable_range<T4 const&>);
+
+// A type that satisfies (range=true, view=true, constructible_from=false, lvalue-or-movable=false) can't be formed,
+// because views are movable by definition
+
+// viewable_range<T> is satisfied for (range=true, view=false, constructible_from=true, lvalue-or-movable=true)...
+struct T5 : test_range<cpp20_input_iterator> { };
+static_assert( std::ranges::range<T5>);
+static_assert(!std::ranges::view<T5>);
+static_assert( std::constructible_from<T5, T5>);
+static_assert( std::movable<T5>);
+static_assert(!std::movable<const T5>);
+
+static_assert( std::ranges::viewable_range<T5>); // movable
+static_assert( std::ranges::viewable_range<T5&>); // movable
+static_assert( std::ranges::viewable_range<T5&&>); // movable
+static_assert(!std::ranges::viewable_range<const T5>);
+static_assert( std::ranges::viewable_range<const T5&>); // lvalue
+static_assert(!std::ranges::viewable_range<const T5&&>);
+
+// ...but not if the (non-view, lvalue-or-movable) range is an initializer_list.
+static_assert( std::ranges::range<std::initializer_list<int>>);
+static_assert(!std::ranges::view<std::initializer_list<int>>);
+static_assert( std::constructible_from<std::initializer_list<int>, std::initializer_list<int>>);
+static_assert( std::movable<std::initializer_list<int>>);
+
+static_assert(!std::ranges::viewable_range<std::initializer_list<int>>);
+static_assert( std::ranges::viewable_range<std::initializer_list<int>&>);
+static_assert(!std::ranges::viewable_range<std::initializer_list<int>&&>);
+static_assert(!std::ranges::viewable_range<std::initializer_list<int> const>);
+static_assert( std::ranges::viewable_range<std::initializer_list<int> const&>);
+static_assert(!std::ranges::viewable_range<std::initializer_list<int> const&&>);
+
+// viewable_range<T> is not satisfied for (range=true, view=false, constructible_from=true, lvalue-or-movable=false)
+struct T6 : test_range<cpp20_input_iterator> { T6(T6&&); T6& operator=(T6&&) = delete; };
+static_assert( std::ranges::range<T6>);
+static_assert(!std::ranges::view<T6>);
+static_assert( std::constructible_from<T6, T6>);
+static_assert(!std::movable<T6>);
+
+static_assert(!std::ranges::viewable_range<T6>);
+static_assert( std::ranges::viewable_range<T6&>); // lvalue
+static_assert(!std::ranges::viewable_range<T6&&>);
+static_assert(!std::ranges::viewable_range<const T6>);
+static_assert( std::ranges::viewable_range<const T6&>); // lvalue
+static_assert(!std::ranges::viewable_range<const T6&&>);
+
+// viewable_range<T> is satisfied for (range=true, view=false, constructible_from=false, lvalue-or-movable=true)
+struct T7 : test_range<cpp20_input_iterator> {
+  T7(T7 const&) = delete;
+};
+static_assert(std::ranges::range<T7&>);
+static_assert(!std::ranges::view<std::remove_cvref_t<T7&>>);
+static_assert(!std::constructible_from<std::remove_cvref_t<T7&>, T7&>);
+
+static_assert(!std::ranges::viewable_range<T7>);
+static_assert( std::ranges::viewable_range<T7&>);
+static_assert(!std::ranges::viewable_range<T7&&>);
+static_assert(!std::ranges::viewable_range<const T7>);
+static_assert( std::ranges::viewable_range<const T7&>);
+static_assert(!std::ranges::viewable_range<const T7&&>);
+
+// viewable_range<T> is not satisfied for (range=true, view=false, constructible_from=false, lvalue-or-movable=false)
+struct T8 : test_range<cpp20_input_iterator> {
+  T8(T8 const&) = delete;
+};
+static_assert(std::ranges::range<T8>);
+static_assert(!std::ranges::view<T8>);
+static_assert(!std::constructible_from<T8, T8>);
+
+static_assert(!std::ranges::viewable_range<T8>);
+static_assert( std::ranges::viewable_range<T8&>);
+static_assert(!std::ranges::viewable_range<T8&&>);
+static_assert(!std::ranges::viewable_range<const T8>);
+static_assert( std::ranges::viewable_range<const T8&>);
+static_assert(!std::ranges::viewable_range<const T8&&>);
+
+// Test with a few degenerate types
+static_assert(!std::ranges::viewable_range<void>);
+static_assert(!std::ranges::viewable_range<int>);
+static_assert(!std::ranges::viewable_range<int (*)(char)>);
+static_assert(!std::ranges::viewable_range<int[]>);
+static_assert(!std::ranges::viewable_range<int[10]>);
+static_assert(!std::ranges::viewable_range<int(&)[]>); // not a range
+static_assert( std::ranges::viewable_range<int(&)[10]>); // OK, lvalue
+static_assert(!std::ranges::viewable_range<int(&&)[]>);
+static_assert(!std::ranges::viewable_range<int(&&)[10]>);
+
+// Test ADL-proofing.
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>*>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>*&>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>*&&>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>* const>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>* const&>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>* const&&>);
+
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>*[10]>);
+static_assert( std::ranges::viewable_range<Holder<Incomplete>*(&)[10]>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>*(&&)[10]>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>* const[10]>);
+static_assert( std::ranges::viewable_range<Holder<Incomplete>* const(&)[10]>);
+static_assert(!std::ranges::viewable_range<Holder<Incomplete>* const(&&)[10]>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.sized/sized_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.sized/sized_range.compile.pass.cpp
new file mode 100644
index 0000000..328f55c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.sized/sized_range.compile.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept sized_range;
+
+#include <ranges>
+
+#include "test_iterators.h"
+
+
+
+static_assert(std::ranges::sized_range<int[5]>);
+static_assert(std::ranges::sized_range<int (&)[5]>);
+static_assert(!std::ranges::sized_range<int (&)[]>);
+static_assert(!std::ranges::sized_range<int[]>);
+
+struct range_has_size {
+  bidirectional_iterator<int*> begin();
+  bidirectional_iterator<int*> end();
+  int size();
+};
+static_assert(std::ranges::sized_range<range_has_size>);
+static_assert(!std::ranges::sized_range<range_has_size const>);
+
+struct range_has_const_size {
+  bidirectional_iterator<int*> begin();
+  bidirectional_iterator<int*> end();
+  int size() const;
+};
+static_assert(std::ranges::sized_range<range_has_const_size>);
+static_assert(!std::ranges::sized_range<range_has_const_size const>);
+
+struct const_range_has_size {
+  bidirectional_iterator<int*> begin() const;
+  bidirectional_iterator<int*> end() const;
+  int size();
+};
+static_assert(std::ranges::sized_range<const_range_has_size>);
+static_assert(std::ranges::range<const_range_has_size const>);
+static_assert(!std::ranges::sized_range<const_range_has_size const>);
+
+struct const_range_has_const_size {
+  bidirectional_iterator<int*> begin() const;
+  bidirectional_iterator<int*> end() const;
+  int size() const;
+};
+static_assert(std::ranges::sized_range<const_range_has_const_size>);
+static_assert(std::ranges::sized_range<const_range_has_const_size const>);
+
+struct sized_sentinel_range_has_size {
+  int* begin();
+  int* end();
+};
+static_assert(std::ranges::sized_range<sized_sentinel_range_has_size>);
+static_assert(!std::ranges::sized_range<sized_sentinel_range_has_size const>);
+
+struct const_sized_sentinel_range_has_size {
+  int* begin() const;
+  int* end() const;
+};
+static_assert(std::ranges::sized_range<const_sized_sentinel_range_has_size>);
+static_assert(std::ranges::sized_range<const_sized_sentinel_range_has_size const>);
+
+struct non_range_has_size {
+  int size() const;
+};
+static_assert(requires(non_range_has_size const x) { std::ranges::size(x); });
+static_assert(!std::ranges::sized_range<non_range_has_size>);
+static_assert(!std::ranges::sized_range<non_range_has_size const>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.sized/subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.sized/subsumption.compile.pass.cpp
new file mode 100644
index 0000000..d81bf6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.sized/subsumption.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+// concept sized_range;
+
+#include <ranges>
+
+template <std::ranges::range R>
+consteval bool check_subsumption() {
+  return false;
+}
+
+template <std::ranges::sized_range R>
+consteval bool check_subsumption() {
+  return true;
+}
+
+static_assert(check_subsumption<int[5]>());
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/enable_view.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/enable_view.compile.pass.cpp
new file mode 100644
index 0000000..6412234
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/enable_view.compile.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+// template<class T>
+// inline constexpr bool enable_view = ...;
+
+#include <ranges>
+
+#include "test_macros.h"
+
+// Doesn't derive from view_base
+struct Empty { };
+static_assert(!std::ranges::enable_view<Empty>);
+static_assert(!std::ranges::enable_view<Empty&>);
+static_assert(!std::ranges::enable_view<Empty&&>);
+static_assert(!std::ranges::enable_view<const Empty>);
+static_assert(!std::ranges::enable_view<const Empty&>);
+static_assert(!std::ranges::enable_view<const Empty&&>);
+
+// Derives from view_base, but privately
+struct PrivateViewBase : private std::ranges::view_base { };
+static_assert(!std::ranges::enable_view<PrivateViewBase>);
+static_assert(!std::ranges::enable_view<PrivateViewBase&>);
+static_assert(!std::ranges::enable_view<PrivateViewBase&&>);
+static_assert(!std::ranges::enable_view<const PrivateViewBase>);
+static_assert(!std::ranges::enable_view<const PrivateViewBase&>);
+static_assert(!std::ranges::enable_view<const PrivateViewBase&&>);
+
+// Derives from view_base, but specializes enable_view to false
+struct EnableViewFalse : std::ranges::view_base { };
+template <> constexpr bool std::ranges::enable_view<EnableViewFalse> = false;
+static_assert(!std::ranges::enable_view<EnableViewFalse>);
+static_assert(!std::ranges::enable_view<EnableViewFalse&>);
+static_assert(!std::ranges::enable_view<EnableViewFalse&&>);
+static_assert(std::ranges::enable_view<const EnableViewFalse>);
+static_assert(!std::ranges::enable_view<const EnableViewFalse&>);
+static_assert(!std::ranges::enable_view<const EnableViewFalse&&>);
+
+// Derives from view_base
+struct PublicViewBase : std::ranges::view_base { };
+static_assert(std::ranges::enable_view<PublicViewBase>);
+static_assert(!std::ranges::enable_view<PublicViewBase&>);
+static_assert(!std::ranges::enable_view<PublicViewBase&&>);
+static_assert(std::ranges::enable_view<const PublicViewBase>);
+static_assert(!std::ranges::enable_view<const PublicViewBase&>);
+static_assert(!std::ranges::enable_view<const PublicViewBase&&>);
+
+// Does not derive from view_base, but specializes enable_view to true
+struct EnableViewTrue { };
+template <> constexpr bool std::ranges::enable_view<EnableViewTrue> = true;
+static_assert(std::ranges::enable_view<EnableViewTrue>);
+static_assert(!std::ranges::enable_view<EnableViewTrue&>);
+static_assert(!std::ranges::enable_view<EnableViewTrue&&>);
+static_assert(!std::ranges::enable_view<const EnableViewTrue>);
+static_assert(!std::ranges::enable_view<const EnableViewTrue&>);
+static_assert(!std::ranges::enable_view<const EnableViewTrue&&>);
+
+// Make sure that enable_view is a bool, not some other contextually-convertible-to-bool type.
+ASSERT_SAME_TYPE(decltype(std::ranges::enable_view<Empty>), const bool);
+ASSERT_SAME_TYPE(decltype(std::ranges::enable_view<PublicViewBase>), const bool);
+
+struct V1 : std::ranges::view_interface<V1> {};
+static_assert(std::ranges::enable_view<V1>);
+static_assert(!std::ranges::enable_view<V1&>);
+static_assert(!std::ranges::enable_view<V1&&>);
+static_assert(std::ranges::enable_view<const V1>);
+static_assert(!std::ranges::enable_view<const V1&>);
+static_assert(!std::ranges::enable_view<const V1&&>);
+
+struct V2 : std::ranges::view_interface<V1>, std::ranges::view_interface<V2> {};
+static_assert(!std::ranges::enable_view<V2>);
+static_assert(!std::ranges::enable_view<V2&>);
+static_assert(!std::ranges::enable_view<V2&&>);
+static_assert(!std::ranges::enable_view<const V2>);
+static_assert(!std::ranges::enable_view<const V2&>);
+static_assert(!std::ranges::enable_view<const V2&&>);
+
+struct V3 : std::ranges::view_interface<V1> {};
+static_assert(std::ranges::enable_view<V3>);
+static_assert(!std::ranges::enable_view<V3&>);
+static_assert(!std::ranges::enable_view<V3&&>);
+static_assert(std::ranges::enable_view<const V3>);
+static_assert(!std::ranges::enable_view<const V3&>);
+static_assert(!std::ranges::enable_view<const V3&&>);
+
+struct PrivateInherit : private std::ranges::view_interface<PrivateInherit> {};
+static_assert(!std::ranges::enable_view<PrivateInherit>);
+
+// ADL-proof
+struct Incomplete;
+template<class T> struct Holder { T t; };
+static_assert(!std::ranges::enable_view<Holder<Incomplete>*>);
+
+static_assert(!std::ranges::enable_view<void>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view.compile.pass.cpp
new file mode 100644
index 0000000..e7a7f30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view.compile.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+// template<class T>
+// concept view = ...;
+
+#include <ranges>
+
+#include "test_macros.h"
+
+// The type would be a view, but it's not moveable.
+struct NotMoveable : std::ranges::view_base {
+  NotMoveable() = default;
+  NotMoveable(NotMoveable&&) = delete;
+  NotMoveable& operator=(NotMoveable&&) = delete;
+  friend int* begin(NotMoveable&);
+  friend int* begin(NotMoveable const&);
+  friend int* end(NotMoveable&);
+  friend int* end(NotMoveable const&);
+};
+static_assert(std::ranges::range<NotMoveable>);
+static_assert(!std::movable<NotMoveable>);
+static_assert(std::default_initializable<NotMoveable>);
+static_assert(std::ranges::enable_view<NotMoveable>);
+static_assert(!std::ranges::view<NotMoveable>);
+
+// The type would be a view, but it's not default initializable
+struct NotDefaultInit : std::ranges::view_base {
+  NotDefaultInit() = delete;
+  friend int* begin(NotDefaultInit&);
+  friend int* begin(NotDefaultInit const&);
+  friend int* end(NotDefaultInit&);
+  friend int* end(NotDefaultInit const&);
+};
+static_assert(std::ranges::range<NotDefaultInit>);
+static_assert(std::movable<NotDefaultInit>);
+static_assert(!std::default_initializable<NotDefaultInit>);
+static_assert(std::ranges::enable_view<NotDefaultInit>);
+static_assert(std::ranges::view<NotDefaultInit>);
+
+// The type would be a view, but it doesn't enable it with enable_view
+struct NotExplicitlyEnabled {
+  NotExplicitlyEnabled() = default;
+  NotExplicitlyEnabled(NotExplicitlyEnabled&&) = default;
+  NotExplicitlyEnabled& operator=(NotExplicitlyEnabled&&) = default;
+  friend int* begin(NotExplicitlyEnabled&);
+  friend int* begin(NotExplicitlyEnabled const&);
+  friend int* end(NotExplicitlyEnabled&);
+  friend int* end(NotExplicitlyEnabled const&);
+};
+static_assert(std::ranges::range<NotExplicitlyEnabled>);
+static_assert(std::movable<NotExplicitlyEnabled>);
+static_assert(std::default_initializable<NotExplicitlyEnabled>);
+static_assert(!std::ranges::enable_view<NotExplicitlyEnabled>);
+static_assert(!std::ranges::view<NotExplicitlyEnabled>);
+
+// The type has everything else, but it's not a range
+struct NotARange : std::ranges::view_base {
+  NotARange() = default;
+  NotARange(NotARange&&) = default;
+  NotARange& operator=(NotARange&&) = default;
+};
+static_assert(!std::ranges::range<NotARange>);
+static_assert(std::movable<NotARange>);
+static_assert(std::default_initializable<NotARange>);
+static_assert(std::ranges::enable_view<NotARange>);
+static_assert(!std::ranges::view<NotARange>);
+
+// The type satisfies all requirements
+struct View : std::ranges::view_base {
+  View() = default;
+  View(View&&) = default;
+  View& operator=(View&&) = default;
+  friend int* begin(View&);
+  friend int* begin(View const&);
+  friend int* end(View&);
+  friend int* end(View const&);
+};
+static_assert(std::ranges::range<View>);
+static_assert(std::movable<View>);
+static_assert(std::default_initializable<View>);
+static_assert(std::ranges::enable_view<View>);
+static_assert(std::ranges::view<View>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view.subsumption.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view.subsumption.compile.pass.cpp
new file mode 100644
index 0000000..a9bd5a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view.subsumption.compile.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+// template<class T>
+// concept view = ...;
+
+#include <ranges>
+
+#include "test_macros.h"
+
+struct View : std::ranges::view_base {
+  View() = default;
+  View(View&&) = default;
+  View& operator=(View&&) = default;
+  friend int* begin(View&);
+  friend int* begin(View const&);
+  friend int* end(View&);
+  friend int* end(View const&);
+};
+
+namespace subsume_range {
+  template <std::ranges::view>
+  constexpr bool test() { return true; }
+  template <std::ranges::range>
+  constexpr bool test() { return false; }
+  static_assert(test<View>());
+}
+
+namespace subsume_movable {
+  template <std::ranges::view>
+  constexpr bool test() { return true; }
+  template <std::movable>
+  constexpr bool test() { return false; }
+  static_assert(test<View>());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view_base.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view_base.compile.pass.cpp
new file mode 100644
index 0000000..ca9525d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.req/range.view/view_base.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+// struct view_base { };
+
+#include <ranges>
+#include <type_traits>
+
+static_assert(std::is_empty_v<std::ranges::view_base>);
+static_assert(std::is_trivial_v<std::ranges::view_base>);
+
+// Make sure we can inherit from it, as it's intended (that wouldn't be the
+// case if e.g. it was marked as final).
+struct View : std::ranges::view_base { };
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/borrowed_iterator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/borrowed_iterator.compile.pass.cpp
new file mode 100644
index 0000000..67233d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/borrowed_iterator.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::borrowed_iterator_t;
+
+#include <ranges>
+
+#include <concepts>
+#include <span>
+#include <string>
+#include <string_view>
+#include <vector>
+
+static_assert(std::same_as<std::ranges::borrowed_iterator_t<std::string>, std::ranges::dangling>);
+static_assert(std::same_as<std::ranges::borrowed_iterator_t<std::string&&>, std::ranges::dangling>);
+static_assert(std::same_as<std::ranges::borrowed_iterator_t<std::vector<int> >, std::ranges::dangling>);
+
+static_assert(std::same_as<std::ranges::borrowed_iterator_t<std::string&>, std::string::iterator>);
+static_assert(std::same_as<std::ranges::borrowed_iterator_t<std::string_view>, std::string_view::iterator>);
+static_assert(std::same_as<std::ranges::borrowed_iterator_t<std::span<int> >, std::span<int>::iterator>);
+
+template <class T>
+constexpr bool has_borrowed_iterator = requires {
+  typename std::ranges::borrowed_iterator_t<T>;
+};
+
+static_assert(!has_borrowed_iterator<int>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/borrowed_subrange.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/borrowed_subrange.compile.pass.cpp
new file mode 100644
index 0000000..21c73c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/borrowed_subrange.compile.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::borrowed_subrange_t;
+
+#include <ranges>
+
+#include <concepts>
+#include <span>
+#include <string>
+#include <string_view>
+#include <vector>
+
+static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::string>, std::ranges::dangling>);
+static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::string&&>, std::ranges::dangling>);
+static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::vector<int> >, std::ranges::dangling>);
+
+static_assert(
+    std::same_as<std::ranges::borrowed_subrange_t<std::string&>, std::ranges::subrange<std::string::iterator> >);
+
+static_assert(
+    std::same_as<std::ranges::borrowed_subrange_t<std::span<int> >, std::ranges::subrange<std::span<int>::iterator> >);
+
+static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::string_view>,
+                           std::ranges::subrange<std::string_view::iterator> >);
+
+template <class T>
+constexpr bool has_type = requires {
+  typename std::ranges::borrowed_subrange_t<T>;
+};
+
+static_assert(!has_type<int>);
+
+struct S {};
+static_assert(!has_type<S>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/dangling.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/dangling.pass.cpp
new file mode 100644
index 0000000..b6b3fb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.dangling/dangling.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// std::ranges::dangling;
+
+#include <ranges>
+
+#include <concepts>
+#include <type_traits>
+
+static_assert(std::is_empty_v<std::ranges::dangling>);
+
+template<int> struct S { };
+static_assert(std::is_nothrow_constructible_v<std::ranges::dangling>);
+static_assert(std::is_nothrow_constructible_v<std::ranges::dangling, S<0>>);
+static_assert(std::is_nothrow_constructible_v<std::ranges::dangling, S<0>, S<1>>);
+static_assert(std::is_nothrow_constructible_v<std::ranges::dangling, S<0>, S<1>, S<2>>);
+
+constexpr bool test_dangling() {
+  [[maybe_unused]] auto a = std::ranges::dangling();
+  [[maybe_unused]] auto b = std::ranges::dangling(S<0>());
+  [[maybe_unused]] auto c = std::ranges::dangling(S<0>(), S<1>());
+  [[maybe_unused]] auto d = std::ranges::dangling(S<0>(), S<1>(), S<2>());
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(test_dangling());
+  test_dangling();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/advance.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/advance.pass.cpp
new file mode 100644
index 0000000..d720e85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/advance.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "types.h"
+
+constexpr bool test() {
+  std::ranges::subrange<int*> a(globalBuff, globalBuff + 8, 8);
+  auto a1 = a.next();
+  assert(a1.begin() == globalBuff + 1);
+  assert(a1.size() == 7);
+  auto a5 = a.next(5);
+  assert(a5.begin() == globalBuff + 5);
+  assert(a5.size() == 3);
+  auto a4 = a5.prev();
+  assert(a4.begin() == globalBuff + 4);
+  assert(a4.size() == 4);
+
+  std::ranges::subrange<InputIter, sentinel_wrapper<InputIter>> b(InputIter(globalBuff), sentinel_wrapper(InputIter(globalBuff + 8)));
+  auto b1 = std::move(b).next();
+  assert(base(b1.begin()) == globalBuff + 1);
+
+  std::ranges::subrange<BidirIter> c(BidirIter(globalBuff + 4), BidirIter(globalBuff + 8));
+  auto c1 = c.prev();
+  assert(base(c1.begin()) == globalBuff + 3);
+  auto c2 = c.prev(4);
+  assert(base(c2.begin()) == globalBuff);
+
+  std::ranges::subrange<BidirIter> d(BidirIter(globalBuff + 4), BidirIter(globalBuff + 8));
+  auto d1 = d.advance(4);
+  assert(base(d1.begin()) == globalBuff + 8);
+  assert(d1.empty());
+  auto d2 = d1.advance(-4);
+  assert(base(d2.begin()) == globalBuff + 4);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/borrowing.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/borrowing.compile.pass.cpp
new file mode 100644
index 0000000..b4ef087
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/borrowing.compile.pass.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class I, class S, subrange_kind K>
+//   inline constexpr bool enable_borrowed_range<subrange<I, S, K>> = true;
+
+#include <ranges>
+
+static_assert(std::ranges::borrowed_range<std::ranges::subrange<int*, const int*, std::ranges::subrange_kind::sized>>);
+static_assert(std::ranges::borrowed_range<std::ranges::subrange<int*, std::unreachable_sentinel_t, std::ranges::subrange_kind::sized>>);
+static_assert(std::ranges::borrowed_range<std::ranges::subrange<int*, std::unreachable_sentinel_t, std::ranges::subrange_kind::unsized>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctad.compile.pass.cpp
new file mode 100644
index 0000000..670f980
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctad.compile.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+using FI = forward_iterator<int*>;
+FI fi{nullptr};
+int *ptr = nullptr;
+
+static_assert(std::same_as<decltype(std::ranges::subrange(fi, fi)),
+                           std::ranges::subrange<FI, FI, std::ranges::subrange_kind::unsized>>);
+static_assert(std::same_as<decltype(std::ranges::subrange(ptr, ptr, 0)),
+                           std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>>);
+static_assert(std::same_as<decltype(std::ranges::subrange(ptr, nullptr, 0)),
+                           std::ranges::subrange<int*, std::nullptr_t, std::ranges::subrange_kind::sized>>);
+
+struct ForwardRange {
+  forward_iterator<int*> begin() const;
+  forward_iterator<int*> end() const;
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<ForwardRange> = true;
+
+struct SizedRange {
+  int *begin();
+  int *end();
+};
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<SizedRange> = true;
+
+static_assert(std::same_as<decltype(std::ranges::subrange(ForwardRange())),
+                           std::ranges::subrange<FI, FI, std::ranges::subrange_kind::unsized>>);
+static_assert(std::same_as<decltype(std::ranges::subrange(SizedRange())),
+                           std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>>);
+static_assert(std::same_as<decltype(std::ranges::subrange(SizedRange(), 8)),
+                           std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.begin_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.begin_end.pass.cpp
new file mode 100644
index 0000000..f61f542
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.begin_end.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include "types.h"
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// convertible-to-non-slicing cases:
+//   1. Not convertible (fail)
+//   2. Only one is a pointer (succeed)
+//   3. Both are not pointers (succeed)
+//   4. Pointer elements are different types (fail)
+//   5. Pointer elements are same type (succeed)
+
+// !StoreSize ctor.
+static_assert( std::is_constructible_v<ForwardSubrange, ForwardIter, ForwardIter>); // Default case.
+static_assert(!std::is_constructible_v<ForwardSubrange, Empty, ForwardIter>); // 1.
+static_assert( std::is_constructible_v<ConvertibleForwardSubrange, ConvertibleForwardIter, int*>); // 2.
+static_assert( std::is_constructible_v<ForwardSubrange, ForwardIter, ForwardIter>); // 3. (Same as default case.)
+// 4. and 5. must be sized.
+
+constexpr bool test() {
+  ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8));
+  assert(base(a.begin()) == globalBuff);
+  assert(base(a.end()) == globalBuff + 8);
+
+  ConvertibleForwardSubrange b(ConvertibleForwardIter(globalBuff), globalBuff + 8);
+  assert(b.begin() == globalBuff);
+  assert(b.end() == globalBuff + 8);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.begin_end_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.begin_end_size.pass.cpp
new file mode 100644
index 0000000..c83e83b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.begin_end_size.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include "types.h"
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// convertible-to-non-slicing cases:
+//   1. Not convertible (fail)
+//   2. Only one is a pointer (succeed)
+//   3. Both are not pointers (succeed)
+//   4. Pointer elements are different types (fail)
+//   5. Pointer elements are same type (succeed)
+
+static_assert( std::is_constructible_v<SizedSentinelForwardSubrange, ConditionallyConvertibleIter, ConditionallyConvertibleIter, ConditionallyConvertibleIter::udifference_type>); // Default case.
+static_assert(!std::is_constructible_v<SizedSentinelForwardSubrange, Empty, ConditionallyConvertibleIter, ConditionallyConvertibleIter::udifference_type>); // 1.
+static_assert( std::is_constructible_v<ConvertibleSizedSentinelForwardSubrange, ConvertibleSizedSentinelForwardIter, int*, ConvertibleSizedSentinelForwardIter::udifference_type>); // 2.
+static_assert( std::is_constructible_v<SizedSentinelForwardSubrange, ConditionallyConvertibleIter, ConditionallyConvertibleIter, ConditionallyConvertibleIter::udifference_type>); // 3. (Same as default case.)
+static_assert(!std::is_constructible_v<SizedIntPtrSubrange, long*, int*, size_t>); // 4.
+static_assert( std::is_constructible_v<SizedIntPtrSubrange, int*, int*, size_t>); // 5.
+
+constexpr bool test() {
+  SizedSentinelForwardSubrange a(ConditionallyConvertibleIter(globalBuff), ConditionallyConvertibleIter(globalBuff + 8), 8);
+  assert(a.begin().base() == globalBuff);
+  assert(a.end().base() == globalBuff + 8);
+  assert(a.size() == 8);
+
+  ConvertibleSizedSentinelForwardSubrange b(ConvertibleSizedSentinelForwardIter(globalBuff), ConvertibleSizedSentinelForwardIter(globalBuff + 8), 8);
+  assert(b.begin() == globalBuff);
+  assert(b.end() == globalBuff + 8);
+  assert(b.size() == 8);
+
+  SizedIntPtrSubrange c(globalBuff, globalBuff + 8, 8);
+  assert(c.begin() == globalBuff);
+  assert(c.end() == globalBuff + 8);
+  assert(c.size() == 8);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.default.pass.cpp
new file mode 100644
index 0000000..e1d3c64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.default.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// constexpr subrange() requires default_initializable<I>;
+
+#include <ranges>
+
+#include <cassert>
+#include <cstddef>
+
+#include "test_iterators.h"
+
+// An input_or_output_iterator that is not default constructible so we can test
+// the `requires` on subrange's default constructor.
+struct NoDefaultIterator {
+  using difference_type = std::ptrdiff_t;
+  NoDefaultIterator() = delete;
+  NoDefaultIterator& operator++();
+  void operator++(int);
+  int& operator*() const;
+  friend bool operator==(NoDefaultIterator const&, NoDefaultIterator const&);
+};
+static_assert(std::input_or_output_iterator<NoDefaultIterator>);
+
+// A sentinel type for the above iterator
+struct Sentinel {
+  friend bool operator==(NoDefaultIterator const&, Sentinel const&);
+  friend bool operator==(Sentinel const&, NoDefaultIterator const&);
+  friend bool operator!=(NoDefaultIterator const&, Sentinel const&);
+  friend bool operator!=(Sentinel const&, NoDefaultIterator const&);
+};
+
+constexpr bool test() {
+  {
+    static_assert(!std::is_default_constructible_v<std::ranges::subrange<NoDefaultIterator, Sentinel, std::ranges::subrange_kind::sized>>);
+    static_assert(!std::is_default_constructible_v<std::ranges::subrange<NoDefaultIterator, Sentinel, std::ranges::subrange_kind::unsized>>);
+  }
+
+  {
+    using Iter = forward_iterator<int*>;
+    std::ranges::subrange<Iter, Iter, std::ranges::subrange_kind::sized> subrange;
+    assert(subrange.begin() == Iter());
+    assert(subrange.end() == Iter());
+  }
+  {
+    using Iter = forward_iterator<int*>;
+    std::ranges::subrange<Iter, Iter, std::ranges::subrange_kind::unsized> subrange;
+    assert(subrange.begin() == Iter());
+    assert(subrange.end() == Iter());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.pair_like_conv.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.pair_like_conv.pass.cpp
new file mode 100644
index 0000000..605599e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.pair_like_conv.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include "types.h"
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include <tuple>
+#include <utility>
+
+static_assert( std::is_convertible_v<ForwardSubrange, std::pair<ForwardIter, ForwardIter>>);
+static_assert( std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter>>);
+static_assert(!std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter>&>);
+static_assert(!std::is_convertible_v<ForwardSubrange, std::tuple<ForwardIter, ForwardIter, ForwardIter>>);
+static_assert( std::is_convertible_v<ConvertibleForwardSubrange, std::tuple<ConvertibleForwardIter, int*>>);
+static_assert(!std::is_convertible_v<SizedIntPtrSubrange, std::tuple<long*, int*>>);
+static_assert( std::is_convertible_v<SizedIntPtrSubrange, std::tuple<int*, int*>>);
+
+constexpr bool test() {
+  ForwardSubrange a(ForwardIter(globalBuff), ForwardIter(globalBuff + 8));
+  std::pair<ForwardIter, ForwardIter> aPair = a;
+  assert(base(aPair.first) == globalBuff);
+  assert(base(aPair.second) == globalBuff + 8);
+  std::tuple<ForwardIter, ForwardIter> aTuple = a;
+  assert(base(std::get<0>(aTuple)) == globalBuff);
+  assert(base(std::get<1>(aTuple)) == globalBuff + 8);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.range.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.range.pass.cpp
new file mode 100644
index 0000000..337ca87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.range.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include "types.h"
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+static_assert( std::is_constructible_v<ForwardSubrange, ForwardBorrowedRange>); // Default case.
+static_assert(!std::is_constructible_v<ForwardSubrange, ForwardRange>); // Not borrowed.
+// Iter convertible to sentinel (pointer) type.
+static_assert( std::is_constructible_v<ConvertibleForwardSubrange, ConvertibleForwardBorrowedRange>);
+// Where neither iter or sentinel are pointers, but they are different.
+static_assert( std::is_constructible_v<DifferentSentinelSubrange, ForwardBorrowedRangeDifferentSentinel>);
+static_assert( std::is_constructible_v<DifferentSentinelWithSizeMemberSubrange, DifferentSentinelWithSizeMember>);
+
+constexpr bool test() {
+  ForwardSubrange a{ForwardBorrowedRange()};
+  assert(base(a.begin()) == globalBuff);
+  assert(base(a.end()) == globalBuff + 8);
+
+  ConvertibleForwardSubrange b{ConvertibleForwardBorrowedRange()};
+  assert(b.begin() == globalBuff);
+  assert(b.end() == globalBuff + 8);
+
+  DifferentSentinelSubrange c{ForwardBorrowedRangeDifferentSentinel()};
+  assert(base(c.begin()) == globalBuff);
+  assert(c.end().value == globalBuff + 8);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.range_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.range_size.pass.cpp
new file mode 100644
index 0000000..4b29546
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/ctor.range_size.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<borrowed_range R>
+//   requires convertible-to-non-slicing<iterator_t<R>, I> &&
+//            convertible_to<sentinel_t<R>, S>
+// constexpr subrange(R&& r, make-unsigned-like-t<iter_difference_t<I>> n)
+//   requires (K == subrange_kind::sized);
+
+#include <ranges>
+#include <cassert>
+
+struct BorrowedRange {
+  constexpr explicit BorrowedRange(int* b, int* e) : begin_(b), end_(e) { }
+  constexpr int* begin() const { return begin_; }
+  constexpr int* end() const { return end_; }
+
+private:
+  int* begin_;
+  int* end_;
+};
+
+namespace std::ranges {
+  template <>
+  inline constexpr bool enable_borrowed_range<::BorrowedRange> = true;
+}
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 5, 6, 7, 8};
+  using Subrange = std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>;
+
+  // Test with an empty range
+  {
+    BorrowedRange range(buff, buff);
+    Subrange subrange(range, 0);
+    assert(subrange.size() == 0);
+  }
+
+  // Test with non-empty ranges
+  {
+    BorrowedRange range(buff, buff + 1);
+    Subrange subrange(range, 1);
+    assert(subrange.size() == 1);
+  }
+  {
+    BorrowedRange range(buff, buff + 2);
+    Subrange subrange(range, 2);
+    assert(subrange[0] == 1);
+    assert(subrange[1] == 2);
+    assert(subrange.size() == 2);
+  }
+  {
+    BorrowedRange range(buff, buff + 8);
+    Subrange subrange(range, 8);
+    assert(subrange[0] == 1);
+    assert(subrange[1] == 2);
+    // ...
+    assert(subrange[7] == 8);
+    assert(subrange.size() == 8);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/general.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/general.compile.pass.cpp
new file mode 100644
index 0000000..6d322e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/general.compile.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<std::ranges::subrange_kind K, class... Args>
+concept ValidSubrangeKind = requires { typename std::ranges::subrange<Args..., K>; };
+
+template<class... Args>
+concept ValidSubrange = requires { typename std::ranges::subrange<Args...>; };
+
+static_assert( ValidSubrange<forward_iterator<int*>>);
+static_assert( ValidSubrange<forward_iterator<int*>, forward_iterator<int*>>);
+static_assert( ValidSubrangeKind<std::ranges::subrange_kind::unsized, forward_iterator<int*>, forward_iterator<int*>>);
+static_assert( ValidSubrangeKind<std::ranges::subrange_kind::sized, forward_iterator<int*>, forward_iterator<int*>>);
+// Wrong sentinel type.
+static_assert(!ValidSubrange<forward_iterator<int*>, int*>);
+static_assert( ValidSubrange<int*>);
+static_assert( ValidSubrange<int*, int*>);
+// Must be sized.
+static_assert(!ValidSubrangeKind<std::ranges::subrange_kind::unsized, int*, int*>);
+static_assert( ValidSubrangeKind<std::ranges::subrange_kind::sized, int*, int*>);
+// Wrong sentinel type.
+static_assert(!ValidSubrange<int*, forward_iterator<int*>>);
+// Not an iterator.
+static_assert(!ValidSubrange<int>);
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/get.pass.cpp
new file mode 100644
index 0000000..5e8969b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/get.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<size_t I, class S>
+concept HasGet = requires {
+  std::get<I>(std::declval<S>());
+};
+
+static_assert( HasGet<0, std::ranges::subrange<int*>>);
+static_assert( HasGet<1, std::ranges::subrange<int*>>);
+static_assert(!HasGet<2, std::ranges::subrange<int*>>);
+static_assert(!HasGet<3, std::ranges::subrange<int*>>);
+
+constexpr bool test() {
+  {
+    using It = int*;
+    using Sent = sentinel_wrapper<int*>;
+    int a[] = {1, 2, 3};
+    using R = std::ranges::subrange<It, Sent, std::ranges::subrange_kind::unsized>;
+    R r = R(It(a), Sent(It(a + 3)));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(r)), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(r)), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<R&&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<R&&>(r))), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<const R&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<const R&>(r))), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<const R&&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<const R&&>(r))), Sent);
+    assert(base(std::get<0>(r)) == a);                      // copy from It
+    assert(base(base(std::get<1>(r))) == a + 3);            // copy from Sent
+    assert(base(std::get<0>(std::move(r))) == a);           // copy from It
+    assert(base(base(std::get<1>(std::move(r)))) == a + 3); // copy from Sent
+  }
+  {
+    using It = int*;
+    using Sent = sentinel_wrapper<int*>;
+    int a[] = {1, 2, 3};
+    using R = std::ranges::subrange<It, Sent, std::ranges::subrange_kind::sized>;
+    R r = R(It(a), Sent(It(a + 3)), 3);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(r)), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(r)), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<R&&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<R&&>(r))), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<const R&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<const R&>(r))), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<const R&&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<const R&&>(r))), Sent);
+    assert(base(std::get<0>(r)) == a);                      // copy from It
+    assert(base(base(std::get<1>(r))) == a + 3);            // copy from Sent
+    assert(base(std::get<0>(std::move(r))) == a);           // copy from It
+    assert(base(base(std::get<1>(std::move(r)))) == a + 3); // copy from Sent
+  }
+  {
+    // Test the fix for LWG 3589.
+    using It = cpp20_input_iterator<int*>;
+    using Sent = sentinel_wrapper<It>;
+    int a[] = {1, 2, 3};
+    using R = std::ranges::subrange<It, Sent>;
+    R r = R(It(a), Sent(It(a + 3)));
+    static_assert(!HasGet<0, R&>);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(r)), Sent);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(static_cast<R&&>(r))), It);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<R&&>(r))), Sent);
+    static_assert(!HasGet<0, const R&>);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<const R&>(r))), Sent);
+    static_assert(!HasGet<0, const R&&>);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(static_cast<const R&&>(r))), Sent);
+    assert(base(base(std::get<1>(r))) == a + 3);            // copy from Sent
+    assert(base(std::get<0>(std::move(r))) == a);           // move from It
+    assert(base(base(std::get<1>(std::move(r)))) == a + 3); // copy from Sent
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/lwg3470.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/lwg3470.pass.cpp
new file mode 100644
index 0000000..04926f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/lwg3470.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+//   Test the example from LWG 3470,
+//   qualification conversions in __convertible_to_non_slicing
+
+#include <ranges>
+
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+  // The example from LWG3470, using implicit conversion.
+  int a[3] = { 1, 2, 3 };
+  int* b[3] = { &a[2], &a[0], &a[1] };
+  std::ranges::subrange<const int* const*> c = b;
+  assert(c.begin() == b + 0);
+  assert(c.end() == b + 3);
+
+  // Also test CTAD and a subrange-to-subrange conversion.
+  std::same_as<std::ranges::subrange<int**>> auto d = std::ranges::subrange(b);
+  assert(d.begin() == b + 0);
+  assert(d.end() == b + 3);
+
+  std::ranges::subrange<const int* const*> e = d;
+  assert(e.begin() == b + 0);
+  assert(e.end() == b + 3);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/primitives.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/primitives.pass.cpp
new file mode 100644
index 0000000..62a5314
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/primitives.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <ranges>
+
+#include <cassert>
+#include "test_iterators.h"
+#include "types.h"
+
+constexpr bool test() {
+  int buff[] = {1, 2, 3, 4, 5};
+
+  {
+    std::ranges::subrange<MoveOnlyForwardIter, int*> a(MoveOnlyForwardIter(buff), buff + 5, 5);
+    assert(base(a.begin()) == buff);
+    assert(!a.empty());
+    assert(a.size() == 5);
+  }
+
+  {
+    std::ranges::subrange<ForwardIter> b(ForwardIter(nullptr), ForwardIter(nullptr));
+    assert(b.empty());
+  }
+
+  {
+    std::ranges::subrange<ForwardIter> c{ForwardIter(buff), ForwardIter(buff)};
+    assert(c.empty());
+  }
+
+  {
+    std::ranges::subrange<ForwardIter> d(ForwardIter(buff), ForwardIter(buff + 1));
+    assert(!d.empty());
+  }
+
+  {
+    bool minusWasCalled = false;
+    SizedSentinelForwardIter beg(buff, &minusWasCalled), end(buff + 5, &minusWasCalled);
+    std::ranges::subrange<SizedSentinelForwardIter> e(beg, end, 5);
+    assert(!e.empty());
+
+    // Make sure that operator- is used to calculate size when possible.
+    minusWasCalled = false;
+    assert(e.size() == 5);
+    assert(minusWasCalled);
+  }
+
+  return true;
+}
+
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/structured_bindings.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/structured_bindings.pass.cpp
new file mode 100644
index 0000000..c7ea0f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/structured_bindings.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// class std::ranges::subrange;
+
+#include <cassert>
+#include <ranges>
+#include <utility>
+
+#include "test_macros.h"
+
+constexpr void test_sized_subrange()
+{
+    int a[4] = {1,2,3,4};
+    auto r = std::ranges::subrange(a, a+4);
+    assert(std::ranges::sized_range<decltype(r)>);
+    {
+        auto [first, last] = r;
+        assert(first == a);
+        assert(last == a+4);
+    }
+    {
+        auto [first, last] = std::move(r);
+        assert(first == a);
+        assert(last == a+4);
+    }
+    {
+        auto [first, last] = std::as_const(r);
+        assert(first == a);
+        assert(last == a+4);
+    }
+    {
+        auto [first, last] = std::move(std::as_const(r));
+        assert(first == a);
+        assert(last == a+4);
+    }
+}
+
+constexpr void test_unsized_subrange()
+{
+    int a[4] = {1,2,3,4};
+    auto r = std::ranges::subrange(a, std::unreachable_sentinel);
+    assert(!std::ranges::sized_range<decltype(r)>);
+    {
+        auto [first, last] = r;
+        assert(first == a);
+        ASSERT_SAME_TYPE(decltype(last), std::unreachable_sentinel_t);
+    }
+    {
+        auto [first, last] = std::move(r);
+        assert(first == a);
+        ASSERT_SAME_TYPE(decltype(last), std::unreachable_sentinel_t);
+    }
+    {
+        auto [first, last] = std::as_const(r);
+        assert(first == a);
+        ASSERT_SAME_TYPE(decltype(last), std::unreachable_sentinel_t);
+    }
+    {
+        auto [first, last] = std::move(std::as_const(r));
+        assert(first == a);
+        ASSERT_SAME_TYPE(decltype(last), std::unreachable_sentinel_t);
+    }
+}
+
+constexpr void test_copies_not_originals()
+{
+    int a[4] = {1,2,3,4};
+    {
+        auto r = std::ranges::subrange(a, a+4);
+        auto&& [first, last] = r;
+        ASSERT_SAME_TYPE(decltype(first), int*);
+        ASSERT_SAME_TYPE(decltype(last), int*);
+        first = a+2;
+        last = a+2;
+        assert(r.begin() == a);
+        assert(r.end() == a+4);
+    }
+    {
+        const auto r = std::ranges::subrange(a, a+4);
+        auto&& [first, last] = r;
+        ASSERT_SAME_TYPE(decltype(first), int*);
+        ASSERT_SAME_TYPE(decltype(last), int*);
+        first = a+2;
+        last = a+2;
+        assert(r.begin() == a);
+        assert(r.end() == a+4);
+    }
+}
+
+constexpr bool test()
+{
+    test_sized_subrange();
+    test_unsized_subrange();
+    test_copies_not_originals();
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/types.h b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/types.h
new file mode 100644
index 0000000..e730d6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/range.subrange/types.h
@@ -0,0 +1,224 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_STD_RANGES_RANGE_UTILITY_RANGE_SUBRANGE_TYPES_H
+#define LIBCXX_TEST_STD_RANGES_RANGE_UTILITY_RANGE_SUBRANGE_TYPES_H
+
+#include <cstddef>
+#include <iterator>
+#include <ranges>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int globalBuff[8];
+
+struct Empty {};
+
+using InputIter = cpp17_input_iterator<int*>;
+using ForwardIter = forward_iterator<int*>;
+using BidirIter = bidirectional_iterator<int*>;
+
+using ForwardSubrange = std::ranges::subrange<ForwardIter, ForwardIter, std::ranges::subrange_kind::unsized>;
+using SizedIntPtrSubrange = std::ranges::subrange<int*, int*, std::ranges::subrange_kind::sized>;
+
+struct MoveOnlyForwardIter {
+    typedef std::forward_iterator_tag       iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef MoveOnlyForwardIter             self;
+
+    int *base = nullptr;
+
+    MoveOnlyForwardIter() = default;
+    MoveOnlyForwardIter(MoveOnlyForwardIter &&) = default;
+    MoveOnlyForwardIter &operator=(MoveOnlyForwardIter&&) = default;
+    MoveOnlyForwardIter(MoveOnlyForwardIter const&) = delete;
+    constexpr MoveOnlyForwardIter(int *ptr) : base(ptr) { }
+
+    friend bool operator==(const self&, const self&);
+    friend constexpr bool operator==(const self& lhs, int* rhs) { return lhs.base == rhs; }
+
+    reference operator*() const;
+    pointer operator->() const;
+    self& operator++();
+    self operator++(int);
+    self& operator--();
+    self operator--(int);
+
+    constexpr operator pointer() const { return base; }
+};
+
+struct SizedSentinelForwardIter {
+    typedef std::forward_iterator_tag            iterator_category;
+    typedef int                                  value_type;
+    typedef std::ptrdiff_t                       difference_type;
+    typedef int*                                 pointer;
+    typedef int&                                 reference;
+    typedef std::make_unsigned_t<std::ptrdiff_t> udifference_type;
+    typedef SizedSentinelForwardIter             self;
+
+    SizedSentinelForwardIter() = default;
+    constexpr explicit SizedSentinelForwardIter(int *ptr, bool *minusWasCalled)
+      : base_(ptr), minusWasCalled_(minusWasCalled)
+    { }
+
+    friend constexpr bool operator==(const self& lhs, const self& rhs) { return lhs.base_ == rhs.base_; }
+
+    reference operator*() const;
+    pointer operator->() const;
+    self& operator++();
+    self operator++(int);
+    self& operator--();
+    self operator--(int);
+
+    friend constexpr difference_type operator-(SizedSentinelForwardIter const& a,
+                                               SizedSentinelForwardIter const& b) {
+      if (a.minusWasCalled_)
+        *a.minusWasCalled_ = true;
+      if (b.minusWasCalled_)
+        *b.minusWasCalled_ = true;
+      return a.base_ - b.base_;
+    }
+
+private:
+    int *base_ = nullptr;
+    bool *minusWasCalled_ = nullptr;
+};
+static_assert(std::sized_sentinel_for<SizedSentinelForwardIter, SizedSentinelForwardIter>);
+
+struct ConvertibleForwardIter {
+    typedef std::forward_iterator_tag       iterator_category;
+    typedef int                             value_type;
+    typedef std::ptrdiff_t                  difference_type;
+    typedef int*                            pointer;
+    typedef int&                            reference;
+    typedef ConvertibleForwardIter          self;
+
+    int *base_ = nullptr;
+
+    constexpr ConvertibleForwardIter() = default;
+    constexpr explicit ConvertibleForwardIter(int *ptr) : base_(ptr) { }
+
+    friend bool operator==(const self&, const self&);
+
+    reference operator*() const;
+    pointer operator->() const;
+    self& operator++();
+    self operator++(int);
+    self& operator--();
+    self operator--(int);
+
+    constexpr operator pointer() const { return base_; }
+
+    // Explicitly deleted so this doesn't model sized_sentinel_for.
+    friend constexpr difference_type operator-(int *, self const&) = delete;
+    friend constexpr difference_type operator-(self const&, int*) = delete;
+};
+using ConvertibleForwardSubrange = std::ranges::subrange<ConvertibleForwardIter, int*,
+                                                         std::ranges::subrange_kind::unsized>;
+static_assert(std::is_convertible_v<ConvertibleForwardIter, int*>);
+
+template<bool EnableConvertible>
+struct ConditionallyConvertibleBase {
+    typedef std::forward_iterator_tag            iterator_category;
+    typedef int                                  value_type;
+    typedef std::ptrdiff_t                       difference_type;
+    typedef int*                                 pointer;
+    typedef int&                                 reference;
+    typedef std::make_unsigned_t<std::ptrdiff_t> udifference_type;
+    typedef ConditionallyConvertibleBase         self;
+
+    int *base_ = nullptr;
+
+    constexpr ConditionallyConvertibleBase() = default;
+    constexpr explicit ConditionallyConvertibleBase(int *ptr) : base_(ptr) {}
+
+    constexpr int *base() const { return base_; }
+
+    friend bool operator==(const self&, const self&) = default;
+
+    reference operator*() const;
+    pointer operator->() const;
+    self& operator++();
+    self operator++(int);
+    self& operator--();
+    self operator--(int);
+
+    template<bool E = EnableConvertible>
+      requires E
+    constexpr operator pointer() const { return base_; }
+};
+using ConditionallyConvertibleIter = ConditionallyConvertibleBase<false>;
+using SizedSentinelForwardSubrange = std::ranges::subrange<ConditionallyConvertibleIter,
+                                                           ConditionallyConvertibleIter,
+                                                           std::ranges::subrange_kind::sized>;
+using ConvertibleSizedSentinelForwardIter = ConditionallyConvertibleBase<true>;
+using ConvertibleSizedSentinelForwardSubrange = std::ranges::subrange<ConvertibleSizedSentinelForwardIter, int*,
+                                                                      std::ranges::subrange_kind::sized>;
+
+struct ForwardBorrowedRange {
+  constexpr ForwardIter begin() const { return ForwardIter(globalBuff); }
+  constexpr ForwardIter end() const { return ForwardIter(globalBuff + 8); }
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<ForwardBorrowedRange> = true;
+
+struct ForwardRange {
+  ForwardIter begin() const;
+  ForwardIter end() const;
+};
+
+struct ConvertibleForwardBorrowedRange {
+  constexpr ConvertibleForwardIter begin() const { return ConvertibleForwardIter(globalBuff); }
+  constexpr int *end() const { return globalBuff + 8; }
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<ConvertibleForwardBorrowedRange> = true;
+
+struct ForwardBorrowedRangeDifferentSentinel {
+  struct sentinel {
+    int *value;
+    friend bool operator==(sentinel s, ForwardIter i) { return s.value == base(i); }
+  };
+
+  constexpr ForwardIter begin() const { return ForwardIter(globalBuff); }
+  constexpr sentinel end() const { return sentinel{globalBuff + 8}; }
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<ForwardBorrowedRangeDifferentSentinel> = true;
+
+using DifferentSentinelSubrange = std::ranges::subrange<ForwardIter,
+                                                        ForwardBorrowedRangeDifferentSentinel::sentinel,
+                                                        std::ranges::subrange_kind::unsized>;
+
+struct DifferentSentinelWithSizeMember {
+  struct sentinel {
+    int *value;
+    friend bool operator==(sentinel s, ForwardIter i) { return s.value == base(i); }
+  };
+
+  constexpr ForwardIter begin() const { return ForwardIter(globalBuff); }
+  constexpr sentinel end() const { return sentinel{globalBuff + 8}; }
+  constexpr size_t size() const { return 8; }
+};
+
+template<>
+inline constexpr bool std::ranges::enable_borrowed_range<DifferentSentinelWithSizeMember> = true;
+
+using DifferentSentinelWithSizeMemberSubrange = std::ranges::subrange<ForwardIter,
+                                                                      DifferentSentinelWithSizeMember::sentinel,
+                                                                      std::ranges::subrange_kind::unsized>;
+
+#endif // LIBCXX_TEST_STD_RANGES_RANGE_UTILITY_RANGE_SUBRANGE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/ranges/range.utility/view.interface/view.interface.pass.cpp b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/view.interface/view.interface.pass.cpp
new file mode 100644
index 0000000..b1ed28f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/ranges/range.utility/view.interface/view.interface.pass.cpp
@@ -0,0 +1,333 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class D>
+//   requires is_class_v<D> && same_as<D, remove_cv_t<D>>
+// class view_interface;
+
+#include <ranges>
+
+#include <cassert>
+#include <utility>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class T>
+concept ValidViewInterfaceType = requires { typename std::ranges::view_interface<T>; };
+
+struct Empty { };
+
+static_assert(!ValidViewInterfaceType<void>);
+static_assert(!ValidViewInterfaceType<void*>);
+static_assert(!ValidViewInterfaceType<Empty*>);
+static_assert(!ValidViewInterfaceType<Empty const>);
+static_assert(!ValidViewInterfaceType<Empty &>);
+static_assert( ValidViewInterfaceType<Empty>);
+
+using InputIter = cpp20_input_iterator<const int*>;
+
+struct InputRange : std::ranges::view_interface<InputRange> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr InputIter begin() const { return InputIter(buff); }
+  constexpr InputIter end() const { return InputIter(buff + 8); }
+};
+
+struct NotSizedSentinel {
+  using value_type = int;
+  using difference_type = std::ptrdiff_t;
+  using iterator_concept = std::forward_iterator_tag;
+
+  explicit NotSizedSentinel() = default;
+  explicit NotSizedSentinel(int*);
+  int& operator*() const;
+  NotSizedSentinel& operator++();
+  NotSizedSentinel operator++(int);
+  bool operator==(NotSizedSentinel const&) const;
+};
+static_assert(std::forward_iterator<NotSizedSentinel>);
+
+using ForwardIter = forward_iterator<int*>;
+
+// So that we conform to sized_sentinel_for.
+constexpr std::ptrdiff_t operator-(const ForwardIter& x, const ForwardIter& y) {
+    return base(x) - base(y);
+}
+
+struct ForwardRange : std::ranges::view_interface<ForwardRange> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr ForwardIter begin() const { return ForwardIter(const_cast<int*>(buff)); }
+  constexpr ForwardIter end() const { return ForwardIter(const_cast<int*>(buff) + 8); }
+};
+static_assert(std::ranges::view<ForwardRange>);
+
+struct MoveOnlyForwardRange : std::ranges::view_interface<MoveOnlyForwardRange> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  MoveOnlyForwardRange(MoveOnlyForwardRange const&) = delete;
+  MoveOnlyForwardRange(MoveOnlyForwardRange &&) = default;
+  MoveOnlyForwardRange& operator=(MoveOnlyForwardRange &&) = default;
+  MoveOnlyForwardRange() = default;
+  constexpr ForwardIter begin() const { return ForwardIter(const_cast<int*>(buff)); }
+  constexpr ForwardIter end() const { return ForwardIter(const_cast<int*>(buff) + 8); }
+};
+static_assert(std::ranges::view<MoveOnlyForwardRange>);
+
+struct MI : std::ranges::view_interface<InputRange>,
+            std::ranges::view_interface<MoveOnlyForwardRange> {
+};
+static_assert(!std::ranges::view<MI>);
+
+struct EmptyIsTrue : std::ranges::view_interface<EmptyIsTrue> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr ForwardIter begin() const { return ForwardIter(const_cast<int*>(buff)); }
+  constexpr ForwardIter end() const { return ForwardIter(const_cast<int*>(buff) + 8); }
+  constexpr bool empty() const { return true; }
+};
+static_assert(std::ranges::view<EmptyIsTrue>);
+
+struct SizeIsTen : std::ranges::view_interface<SizeIsTen> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr ForwardIter begin() const { return ForwardIter(const_cast<int*>(buff)); }
+  constexpr ForwardIter end() const { return ForwardIter(const_cast<int*>(buff) + 8); }
+  constexpr size_t size() const { return 10; }
+};
+static_assert(std::ranges::view<SizeIsTen>);
+
+using RAIter = random_access_iterator<int*>;
+
+struct RARange : std::ranges::view_interface<RARange> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr RAIter begin() const { return RAIter(const_cast<int*>(buff)); }
+  constexpr RAIter end() const { return RAIter(const_cast<int*>(buff) + 8); }
+};
+static_assert(std::ranges::view<RARange>);
+
+using ContIter = contiguous_iterator<const int*>;
+
+struct ContRange : std::ranges::view_interface<ContRange> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr ContIter begin() const { return ContIter(buff); }
+  constexpr ContIter end() const { return ContIter(buff + 8); }
+};
+static_assert(std::ranges::view<ContRange>);
+
+struct DataIsNull : std::ranges::view_interface<DataIsNull> {
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr ContIter begin() const { return ContIter(buff); }
+  constexpr ContIter end() const { return ContIter(buff + 8); }
+  constexpr const int *data() const { return nullptr; }
+};
+static_assert(std::ranges::view<DataIsNull>);
+
+struct BoolConvertibleComparison : std::ranges::view_interface<BoolConvertibleComparison> {
+  struct ResultType {
+    bool value;
+    constexpr operator bool() const { return value; }
+  };
+
+  struct SentinelType {
+    int *base_;
+    explicit SentinelType() = default;
+    constexpr explicit SentinelType(int *base) : base_(base) {}
+    friend constexpr ResultType operator==(ForwardIter const& iter, SentinelType const& sent) noexcept { return {base(iter) == sent.base_}; }
+    friend constexpr ResultType operator==(SentinelType const& sent, ForwardIter const& iter) noexcept { return {base(iter) == sent.base_}; }
+    friend constexpr ResultType operator!=(ForwardIter const& iter, SentinelType const& sent) noexcept { return {base(iter) != sent.base_}; }
+    friend constexpr ResultType operator!=(SentinelType const& sent, ForwardIter const& iter) noexcept { return {base(iter) != sent.base_}; }
+  };
+
+  int buff[8] = {0, 1, 2, 3, 4, 5, 6, 7};
+  constexpr ForwardIter begin() const { return ForwardIter(const_cast<int*>(buff)); }
+  constexpr SentinelType end() const { return SentinelType(const_cast<int*>(buff) + 8); }
+};
+static_assert(std::ranges::view<BoolConvertibleComparison>);
+
+template<class T>
+concept EmptyInvocable = requires (T const& obj) { obj.empty(); };
+
+template<class T>
+concept BoolOpInvocable = requires (T const& obj) { bool(obj); };
+
+constexpr bool testEmpty() {
+  static_assert(!EmptyInvocable<InputRange>);
+  static_assert( EmptyInvocable<ForwardRange>);
+
+  static_assert(!BoolOpInvocable<InputRange>);
+  static_assert( BoolOpInvocable<ForwardRange>);
+
+  ForwardRange forwardRange;
+  assert(!forwardRange.empty());
+  assert(!static_cast<ForwardRange const&>(forwardRange).empty());
+
+  assert(forwardRange);
+  assert(static_cast<ForwardRange const&>(forwardRange));
+
+  assert(!std::ranges::empty(forwardRange));
+  assert(!std::ranges::empty(static_cast<ForwardRange const&>(forwardRange)));
+
+  EmptyIsTrue emptyTrue;
+  assert(emptyTrue.empty());
+  assert(static_cast<EmptyIsTrue const&>(emptyTrue).empty());
+  assert(!emptyTrue.std::ranges::view_interface<EmptyIsTrue>::empty());
+
+  assert(!emptyTrue);
+  assert(!static_cast<EmptyIsTrue const&>(emptyTrue));
+  assert(!emptyTrue.std::ranges::view_interface<EmptyIsTrue>::operator bool());
+
+  assert(std::ranges::empty(emptyTrue));
+  assert(std::ranges::empty(static_cast<EmptyIsTrue const&>(emptyTrue)));
+
+  // Try calling empty on an rvalue.
+  MoveOnlyForwardRange moveOnly;
+  assert(!std::move(moveOnly).empty());
+
+  BoolConvertibleComparison boolConv;
+  ASSERT_NOT_NOEXCEPT(boolConv.empty());
+
+  assert(!boolConv.empty());
+  assert(!static_cast<const BoolConvertibleComparison&>(boolConv).empty());
+
+  assert(boolConv);
+  assert(static_cast<const BoolConvertibleComparison&>(boolConv));
+
+  assert(!std::ranges::empty(boolConv));
+  assert(!std::ranges::empty(static_cast<const BoolConvertibleComparison&>(boolConv)));
+
+  return true;
+}
+
+template<class T>
+concept DataInvocable = requires (T const& obj) { obj.data(); };
+
+constexpr bool testData() {
+  static_assert(!DataInvocable<ForwardRange>);
+  static_assert( DataInvocable<ContRange>);
+
+  ContRange contiguous;
+  assert(contiguous.data() == contiguous.buff);
+  assert(static_cast<ContRange const&>(contiguous).data() == contiguous.buff);
+
+  assert(std::ranges::data(contiguous) == contiguous.buff);
+  assert(std::ranges::data(static_cast<ContRange const&>(contiguous)) == contiguous.buff);
+
+  DataIsNull dataNull;
+  assert(dataNull.data() == nullptr);
+  assert(static_cast<DataIsNull const&>(dataNull).data() == nullptr);
+  assert(dataNull.std::ranges::view_interface<DataIsNull>::data() == dataNull.buff);
+
+  assert(std::ranges::data(dataNull) == nullptr);
+  assert(std::ranges::data(static_cast<DataIsNull const&>(dataNull)) == nullptr);
+
+  return true;
+}
+
+template<class T>
+concept SizeInvocable = requires (T const& obj) { obj.size(); };
+
+constexpr bool testSize() {
+  static_assert(!SizeInvocable<InputRange>);
+  static_assert(!SizeInvocable<NotSizedSentinel>);
+  static_assert( SizeInvocable<ForwardRange>);
+
+  // Test the test.
+  static_assert(std::same_as<decltype(std::declval<ForwardIter>() - std::declval<ForwardIter>()), std::ptrdiff_t>);
+  using UnsignedSize = std::make_unsigned_t<std::ptrdiff_t>;
+  using SignedSize = std::common_type_t<std::ptrdiff_t, std::make_signed_t<UnsignedSize>>;
+  ForwardRange forwardRange;
+  assert(forwardRange.size() == 8);
+  assert(static_cast<ForwardRange const&>(forwardRange).size() == 8);
+
+  assert(std::ranges::size(forwardRange) == 8);
+  static_assert(std::same_as<decltype(std::ranges::size(std::declval<ForwardRange>())), UnsignedSize>);
+  static_assert(std::same_as<decltype(std::ranges::ssize(std::declval<ForwardRange>())), SignedSize>);
+
+  assert(std::ranges::size(static_cast<ForwardRange const&>(forwardRange)) == 8);
+  static_assert(std::same_as<decltype(std::ranges::size(std::declval<ForwardRange const>())), UnsignedSize>);
+  static_assert(std::same_as<decltype(std::ranges::ssize(std::declval<ForwardRange const>())), SignedSize>);
+
+  SizeIsTen sizeTen;
+  assert(sizeTen.size() == 10);
+  assert(static_cast<SizeIsTen const&>(sizeTen).size() == 10);
+  assert(sizeTen.std::ranges::view_interface<SizeIsTen>::size() == 8);
+
+  assert(std::ranges::size(sizeTen) == 10);
+  assert(std::ranges::size(static_cast<SizeIsTen const&>(sizeTen)) == 10);
+
+  return true;
+}
+
+template<class T>
+concept SubscriptInvocable = requires (T const& obj, size_t n) { obj[n]; };
+
+constexpr bool testSubscript() {
+  static_assert(!SubscriptInvocable<ForwardRange>);
+  static_assert( SubscriptInvocable<RARange>);
+
+  RARange randomAccess;
+  assert(randomAccess[2] == 2);
+  assert(static_cast<RARange const&>(randomAccess)[2] == 2);
+  randomAccess[2] = 3;
+  assert(randomAccess[2] == 3);
+
+  return true;
+}
+
+template<class T>
+concept FrontInvocable = requires (T const& obj) { obj.front(); };
+
+template<class T>
+concept BackInvocable = requires (T const& obj) { obj.back(); };
+
+constexpr bool testFrontBack() {
+  static_assert(!FrontInvocable<InputRange>);
+  static_assert( FrontInvocable<ForwardRange>);
+  static_assert(!BackInvocable<ForwardRange>);
+  static_assert( BackInvocable<RARange>);
+
+  ForwardRange forwardRange;
+  assert(forwardRange.front() == 0);
+  assert(static_cast<ForwardRange const&>(forwardRange).front() == 0);
+  forwardRange.front() = 2;
+  assert(forwardRange.front() == 2);
+
+  RARange randomAccess;
+  assert(randomAccess.front() == 0);
+  assert(static_cast<RARange const&>(randomAccess).front() == 0);
+  randomAccess.front() = 2;
+  assert(randomAccess.front() == 2);
+
+  assert(randomAccess.back() == 7);
+  assert(static_cast<RARange const&>(randomAccess).back() == 7);
+  randomAccess.back() = 2;
+  assert(randomAccess.back() == 2);
+
+  return true;
+}
+
+struct V1 : std::ranges::view_interface<V1> { };
+struct V2 : std::ranges::view_interface<V2> { V1 base_; };
+static_assert(sizeof(V2) == sizeof(V1));
+
+int main(int, char**) {
+  testEmpty();
+  static_assert(testEmpty());
+
+  testData();
+  static_assert(testData());
+
+  testSize();
+  static_assert(testSize());
+
+  testSubscript();
+  static_assert(testSubscript());
+
+  testFrontBack();
+  static_assert(testFrontBack());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/re/lit.local.cfg
new file mode 100644
index 0000000..9626384
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/lit.local.cfg
@@ -0,0 +1,3 @@
+# Unfortunately, <regex> uses locales in regex_traits
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/awk.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/awk.locale.pass.cpp
new file mode 100644
index 0000000..7d53cd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/awk.locale.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT,
+//           class traits>
+//   bool regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                    match_results<BidirectionalIterator, Allocator>& m,
+//                    const basic_regex<charT, traits>& e,
+//                    regex_constants::match_flag_type flags
+//                                            = regex_constants::match_default);
+
+// TODO: investigation needed
+// TODO(netbsd): incomplete support for locales
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, netbsd, freebsd
+// XFAIL: LIBCXX-AIX-FIXME
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_match(s, m,
+                      std::regex("[a[=M=]z]", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_match(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::awk | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_match(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::awk | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/awk.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/awk.pass.cpp
new file mode 100644
index 0000000..f3385f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/awk.pass.cpp
@@ -0,0 +1,1310 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT,
+//           class traits>
+//   bool regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                    match_results<BidirectionalIterator, Allocator>& m,
+//                    const basic_regex<charT, traits>& e,
+//                    regex_constants::match_flag_type flags
+//                                            = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("a", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_match(s, m, std::regex("ab", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_match(s, m, std::regex("ba", std::regex_constants::awk)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab", std::regex_constants::awk),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("bc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_match(s, m, std::regex("ab*c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_match(s, m, std::regex("(ab)*c", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(!std::regex_match(s, m, std::regex("cd((e)fg)hi",
+                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("^abc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("^abc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_match(s, m, std::regex("^abc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("abc$", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(!std::regex_match(s, m, std::regex("abc$", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_match(s, m, std::regex("abc$", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_match(s, m, std::regex("(.*).*", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(!std::regex_match(s, m, std::regex("(a*)*", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_match(s, m, std::regex("tour|to|tournament",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournamenttotour";
+        assert(std::regex_match(s, m, std::regex("(tour|to|tournament)+",
+               std::regex_constants::awk | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_match(s, m, std::regex("(tour|to|t)+",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(!std::regex_match(s, m, std::regex("-(.*),\1-", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_match(s, m, std::regex("-.*,.*-", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[a]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[ab]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_match(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_match(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(!std::regex_match(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_match(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_match(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_match(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]*",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        const char r[] = "^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr), std::regex_constants::awk);
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "\n\n\n";
+        assert(std::regex_match(s, m, std::regex("[\\n]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert((size_t)m.length(0) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"a", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert((size_t)m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert((size_t)m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_match(s, m, std::wregex(L"ba", std::regex_constants::awk)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::awk),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"bc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab*c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_match(s, m, std::wregex(L"(ab)*c", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(!std::regex_match(s, m, std::wregex(L"cd((e)fg)hi",
+                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_match(s, m, std::wregex(L"(.*).*", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(!std::regex_match(s, m, std::wregex(L"(a*)*", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournament";
+        assert(std::regex_match(s, m, std::wregex(L"tour|to|tournament",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournamenttotour";
+        assert(std::regex_match(s, m, std::wregex(L"(tour|to|tournament)+",
+               std::regex_constants::awk | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ttotour";
+        assert(std::regex_match(s, m, std::wregex(L"(tour|to|t)+",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(!std::regex_match(s, m, std::wregex(L"-(.*),\1-", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_match(s, m, std::wregex(L"-.*,.*-", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[a]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[ab]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_match(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_match(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_match(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]*",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        const wchar_t r[] = L"^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr), std::regex_constants::awk);
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"\n\n\n";
+        assert(std::regex_match(s, m, std::wregex(L"[\\n]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert((size_t)m.length(0) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.compile.fail.cpp
new file mode 100644
index 0000000..d71fc28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.compile.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+//   template <class ST, class SA, class Allocator, class charT, class traits>
+//   bool regex_match(const basic_string<charT, ST, SA>&&,
+//                    match_results<
+//                      typename basic_string<charT, ST, SA>::const_iterator,
+//                      Allocator>&,
+//                    const basic_regex<charT, traits>&,
+//                    regex_constants::match_flag_type =
+//                      regex_constants::match_default) = delete;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+        std::smatch m;
+        std::regex re{"*"};
+        std::regex_match(std::string("abcde"), m, re);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.locale.pass.cpp
new file mode 100644
index 0000000..488385f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.locale.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_match(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_match(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_match(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.pass.cpp
new file mode 100644
index 0000000..d77349d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/basic.pass.cpp
@@ -0,0 +1,1308 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        assert(!std::regex_match("a", m, std::regex()));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("a", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_match(s, m, std::regex("ab", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_match(s, m, std::regex("ba", std::regex_constants::basic)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab", std::regex_constants::basic),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("bc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_match(s, m, std::regex("ab*c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_match(s, m, std::regex("\\(ab\\)*c", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(!std::regex_match(s, m, std::regex("cd\\(\\(e\\)fg\\)hi",
+                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("^abc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("^abc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_match(s, m, std::regex("^abc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("abc$", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(!std::regex_match(s, m, std::regex("abc$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_match(s, m, std::regex("abc$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_match(s, m, std::regex("\\(.*\\).*", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(!std::regex_match(s, m, std::regex("\\(a*\\)*", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_match(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_match(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_match(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_match(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_match(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_match(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_match(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_match(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_match(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_match(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_match(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_match(s, m, std::regex("-\\(.*\\),\\1-", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababbabb";
+        assert(std::regex_match(s, m, std::regex("^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "abb");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababbab";
+        assert(!std::regex_match(s, m, std::regex("^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aBAbbAbB";
+        assert(std::regex_match(s, m, std::regex("^\\(Ab*\\)*\\1$",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "Abb");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aBAbbAbB";
+        assert(!std::regex_match(s, m, std::regex("^\\(Ab*\\)*\\1$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[a]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[ab]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_match(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_match(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(!std::regex_match(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_match(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_match(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_match(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]*",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]\\{1,\\}",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        const char r[] = "^[-+]\\{0,1\\}[0-9]\\{1,\\}[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr), std::regex_constants::basic);
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        assert(!std::regex_match(L"a", m, std::wregex()));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"a", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_match(s, m, std::wregex(L"ba", std::regex_constants::basic)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::basic),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"bc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab*c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_match(s, m, std::wregex(L"\\(ab\\)*c", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(!std::regex_match(s, m, std::wregex(L"cd\\(\\(e\\)fg\\)hi",
+                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_match(s, m, std::wregex(L"\\(.*\\).*", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(!std::regex_match(s, m, std::wregex(L"\\(a*\\)*", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_match(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_match(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_match(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_match(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_match(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_match(s, m, std::wregex(L"-\\(.*\\),\\1-", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababbabb";
+        assert(std::regex_match(s, m, std::wregex(L"^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"abb");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababbab";
+        assert(!std::regex_match(s, m, std::wregex(L"^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aBAbbAbB";
+        assert(std::regex_match(s, m, std::wregex(L"^\\(Ab*\\)*\\1$",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"Abb");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aBAbbAbB";
+        assert(!std::regex_match(s, m, std::wregex(L"^\\(Ab*\\)*\\1$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[a]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[ab]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_match(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_match(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_match(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]*",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]\\{1,\\}",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        const wchar_t r[] = L"^[-+]\\{0,1\\}[0-9]\\{1,\\}[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr), std::regex_constants::basic);
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    { // LWG 2273
+        std::regex re("Foo|FooBar");
+        std::cmatch m;
+        {
+            assert(std::regex_match("FooBar", m, re));
+            assert(m.size() == 1);
+            assert(m[0] == "FooBar");
+        }
+        {
+            assert(std::regex_match("Foo", m, re));
+            assert(m.size() == 1);
+            assert(m[0] == "Foo");
+        }
+        {
+            assert(!std::regex_match("FooBarBaz", m, re));
+            assert(m.size() == 0);
+            assert(m.empty());
+        }
+        {
+            assert(!std::regex_match("FooBa", m, re));
+            assert(m.size() == 0);
+            assert(m.empty());
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/ecma.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/ecma.locale.pass.cpp
new file mode 100644
index 0000000..0f49b9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/ecma.locale.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_match(s, m, std::regex("[a[=M=]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_match(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[=M=]z]")));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_match(s, m, std::wregex(L"[a[=M=]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[=M=]z]")));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/ecma.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/ecma.pass.cpp
new file mode 100644
index 0000000..58502aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/ecma.pass.cpp
@@ -0,0 +1,1311 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("a")));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_match(s, m, std::regex("ab")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_match(s, m, std::regex("ba")));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab"),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("bc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_match(s, m, std::regex("ab*c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_match(s, m, std::regex("(ab)*c")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(!std::regex_match(s, m, std::regex("cd((e)fg)hi")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("^abc")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("^abc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_match(s, m, std::regex("^abc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("abc$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(!std::regex_match(s, m, std::regex("abc$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_match(s, m, std::regex("abc$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_match(s, m, std::regex("(.*).*")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(!std::regex_match(s, m, std::regex("(a*)*")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_match(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_match(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        // http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2273
+        const char s[] = "tournament";
+        assert(std::regex_match(s, m, std::regex("tour|to|tournament")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        // http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2273
+        const char s[] = "tournamenttotour";
+        assert(
+            std::regex_match(s, m, std::regex("(tour|to|tournament)+",
+                                              std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_match(s, m, std::regex("(tour|to|t)+")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(!std::regex_match(s, m, std::regex("-(.*),\1-")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_match(s, m, std::regex("-.*,.*-")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[a]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[ab]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_match(s, m, std::regex("^[a-f]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_match(s, m, std::regex("^[a-f]$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(!std::regex_match(s, m, std::regex("q[^u]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_match(s, m, std::regex("q[^u]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_match(s, m, std::regex("A[[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_match(s, m, std::regex("A[[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[.hyphen.]z]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "foobar";
+        assert(std::regex_match(s, m, std::regex("[^\\0]*")));
+        assert(m.size() == 1);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "foo\0bar";
+        assert(std::regex_match(s, s+7, m, std::regex("[abfor\\0]*")));
+        assert(m.size() == 1);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]*")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]+")));
+        assert(m.size() == 0);
+    }
+    {
+        const char r[] = "^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr));
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Jeff Jeffs ";
+        assert(!std::regex_match(s, m, std::regex("Jeff(?=s\\b)")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Jeffs Jeff";
+        assert(!std::regex_match(s, m, std::regex("Jeff(?!s\\b)")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "5%k";
+        assert(std::regex_match(s, m, std::regex("\\d[\\W]k")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"a")));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_match(s, m, std::wregex(L"ab")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_match(s, m, std::wregex(L"ba")));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab"),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"bc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab*c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_match(s, m, std::wregex(L"(ab)*c")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(!std::regex_match(s, m, std::wregex(L"cd((e)fg)hi")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"^abc")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"abc$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_match(s, m, std::wregex(L"(.*).*")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(!std::regex_match(s, m, std::wregex(L"(a*)*")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_match(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_match(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        // http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2273
+        const wchar_t s[] = L"tournament";
+        assert(std::regex_match(s, m, std::wregex(L"tour|to|tournament")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        // http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2273
+        const wchar_t s[] = L"tournamenttotour";
+        assert(
+            std::regex_match(s, m, std::wregex(L"(tour|to|tournament)+",
+                                               std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ttotour";
+        assert(std::regex_match(s, m, std::wregex(L"(tour|to|t)+")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(!std::regex_match(s, m, std::wregex(L"-(.*),\1-")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_match(s, m, std::wregex(L"-.*,.*-")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[a]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[ab]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_match(s, m, std::wregex(L"^[a-f]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_match(s, m, std::wregex(L"^[a-f]$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_match(s, m, std::wregex(L"A[[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]*")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]+")));
+        assert(m.size() == 0);
+    }
+    {
+        const wchar_t r[] = L"^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr));
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Jeff Jeffs ";
+        assert(!std::regex_match(s, m, std::wregex(L"Jeff(?=s\\b)")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Jeffs Jeff";
+        assert(!std::regex_match(s, m, std::wregex(L"Jeff(?!s\\b)")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"5%k";
+        assert(std::regex_match(s, m, std::wregex(L"\\d[\\W]k")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/egrep.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/egrep.pass.cpp
new file mode 100644
index 0000000..4e1b694
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/egrep.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_match(s, m, std::regex("tour\nto\ntournament",
+                std::regex_constants::egrep)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 10);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tournament");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ment";
+        assert(!std::regex_match(s, m, std::regex("tour\n\ntournament",
+                std::regex_constants::egrep)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_match(s, m, std::regex("(tour|to|tournament)+\ntourna",
+                std::regex_constants::egrep)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 10);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tournament");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tourna";
+        assert(std::regex_match(s, m, std::regex("(tour|to|tournament)+\ntourna",
+                std::regex_constants::egrep)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tourna");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/exponential.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/exponential.pass.cpp
new file mode 100644
index 0000000..2493f6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/exponential.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: c++03
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// Throw exception after spent too many cycles with respect to the length of the input string.
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**) {
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    try {
+      bool b = std::regex_match(
+          "aaaaaaaaaaaaaaaaaaaa",
+          std::regex(
+              "a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaaaaaa",
+              op));
+      LIBCPP_ASSERT(false);
+      assert(b);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_complexity);
+    }
+  }
+  std::string s(100000, 'a');
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    assert(std::regex_match(s, std::regex("a*", op)));
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/extended.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/extended.locale.pass.cpp
new file mode 100644
index 0000000..1e7ded6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/extended.locale.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_match(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_match(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::extended | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_match(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::extended | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/extended.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/extended.pass.cpp
new file mode 100644
index 0000000..b3be567
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/extended.pass.cpp
@@ -0,0 +1,1314 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("a", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_match(s, m, std::regex("ab", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_match(s, m, std::regex("ba", std::regex_constants::extended)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_match(s, m, std::regex("ab", std::regex_constants::extended),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("bc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_match(s, m, std::regex("ab*c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_match(s, m, std::regex("(ab)*c", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(!std::regex_match(s, m, std::regex("cd((e)fg)hi",
+                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("^abc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(!std::regex_match(s, m, std::regex("^abc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_match(s, m, std::regex("^abc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("abc$", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(!std::regex_match(s, m, std::regex("abc$", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_match(s, m, std::regex("abc$", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_match(s, m, std::regex("a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_match(s, m, std::regex("(.*).*", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(!std::regex_match(s, m, std::regex("(a*)*", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_match(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_match(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_match(s, m, std::regex("tour|to|tournament",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournamenttotour";
+        assert(std::regex_match(s, m, std::regex("(tour|to|tournament)+",
+               std::regex_constants::extended | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_match(s, m, std::regex("(tour|to|t)+",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(!std::regex_match(s, m, std::regex("-(.*),\1-", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_match(s, m, std::regex("-(.*),\\1-", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_match(s, m, std::regex("-.*,.*-", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[a]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_match(s, m, std::regex("^[ab]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_match(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_match(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(!std::regex_match(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_match(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_match(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_match(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_match(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_match(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]*",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(!std::regex_match(s, m, std::regex("[ace1-9]+",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        const char r[] = "^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr), std::regex_constants::extended);
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"a", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_match(s, m, std::wregex(L"ba", std::regex_constants::extended)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_match(s, m, std::wregex(L"ab", std::regex_constants::extended),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"bc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab*c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_match(s, m, std::wregex(L"(ab)*c", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(!std::regex_match(s, m, std::wregex(L"cd((e)fg)hi",
+                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_match(s, m, std::wregex(L"^abc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_match(s, m, std::wregex(L"abc$", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_match(s, m, std::wregex(L"a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_match(s, m, std::wregex(L"(.*).*", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(!std::regex_match(s, m, std::wregex(L"(a*)*", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_match(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_match(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournament";
+        assert(std::regex_match(s, m, std::wregex(L"tour|to|tournament",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournamenttotour";
+        assert(std::regex_match(s, m, std::wregex(L"(tour|to|tournament)+",
+               std::regex_constants::extended | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ttotour";
+        assert(std::regex_match(s, m, std::wregex(L"(tour|to|t)+",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(!std::regex_match(s, m, std::wregex(L"-(.*),\1-", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_match(s, m, std::wregex(L"-(.*),\\1-", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_match(s, m, std::wregex(L"-.*,.*-", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[a]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_match(s, m, std::wregex(L"^[ab]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_match(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_match(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_match(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_match(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_match(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_match(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]*",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(!std::regex_match(s, m, std::wregex(L"[ace1-9]+",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        const wchar_t r[] = L"^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr), std::regex_constants::extended);
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_match(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp
new file mode 100644
index 0000000..0f75d61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_match(s, m, std::regex("tour\nto\ntournament",
+                std::regex_constants::grep)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 10);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tournament");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ment";
+        assert(!std::regex_match(s, m, std::regex("tour\n\ntournament",
+                std::regex_constants::grep)));
+        assert(m.size() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/inverted_character_classes.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/inverted_character_classes.pass.cpp
new file mode 100644
index 0000000..004127f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/inverted_character_classes.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: c++03
+
+// Make sure that we correctly match inverted character classes.
+
+#include <cassert>
+#include <regex>
+
+#include "test_macros.h"
+
+
+int main(int, char**) {
+    assert(std::regex_match("X", std::regex("[X]")));
+    assert(std::regex_match("X", std::regex("[XY]")));
+    assert(!std::regex_match("X", std::regex("[^X]")));
+    assert(!std::regex_match("X", std::regex("[^XY]")));
+
+    assert(std::regex_match("X", std::regex("[\\S]")));
+    assert(!std::regex_match("X", std::regex("[^\\S]")));
+
+    assert(!std::regex_match("X", std::regex("[\\s]")));
+    assert(std::regex_match("X", std::regex("[^\\s]")));
+
+    assert(std::regex_match("X", std::regex("[\\s\\S]")));
+    assert(std::regex_match("X", std::regex("[^Y\\s]")));
+    assert(!std::regex_match("X", std::regex("[^X\\s]")));
+
+    assert(std::regex_match("X", std::regex("[\\w]")));
+    assert(std::regex_match("_", std::regex("[\\w]")));
+    assert(!std::regex_match("X", std::regex("[^\\w]")));
+    assert(!std::regex_match("_", std::regex("[^\\w]")));
+
+    assert(!std::regex_match("X", std::regex("[\\W]")));
+    assert(!std::regex_match("_", std::regex("[\\W]")));
+    assert(std::regex_match("X", std::regex("[^\\W]")));
+    assert(std::regex_match("_", std::regex("[^\\W]")));
+
+    // Those test cases are taken from PR40904
+    assert(std::regex_match("abZcd", std::regex("^ab[\\d\\D]cd")));
+    assert(std::regex_match("ab5cd", std::regex("^ab[\\d\\D]cd")));
+    assert(std::regex_match("abZcd", std::regex("^ab[\\D]cd")));
+    assert(std::regex_match("abZcd", std::regex("^ab\\Dcd")));
+    assert(std::regex_match("ab5cd", std::regex("^ab[\\d]cd")));
+    assert(std::regex_match("ab5cd", std::regex("^ab\\dcd")));
+    assert(!std::regex_match("abZcd", std::regex("^ab\\dcd")));
+    assert(!std::regex_match("ab5cd", std::regex("^ab\\Dcd")));
+
+    assert(std::regex_match("_xyz_", std::regex("_(\\s|\\S)+_")));
+    assert(std::regex_match("_xyz_", std::regex("_[\\s\\S]+_")));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/lookahead_capture.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/lookahead_capture.pass.cpp
new file mode 100644
index 0000000..1550f37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/lookahead_capture.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// std::regex in ECMAScript mode should not ignore capture groups inside lookahead assertions.
+// For example, matching /(?=(a))(a)/ to "a" should yield two captures: \1 = "a", \2 = "a"
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::regex re("^(?=(.))a$");
+        assert(re.mark_count() == 1);
+
+        std::string s("a");
+        std::smatch m;
+        assert(std::regex_match(s, m, re));
+        assert(m.size() == 2);
+        assert(m[0] == "a");
+        assert(m[1] == "a");
+    }
+
+    {
+        std::regex re("^(a)(?=(.))(b)$");
+        assert(re.mark_count() == 3);
+
+        std::string s("ab");
+        std::smatch m;
+        assert(std::regex_match(s, m, re));
+        assert(m.size() == 4);
+        assert(m[0] == "ab");
+        assert(m[1] == "a");
+        assert(m[2] == "b");
+        assert(m[3] == "b");
+    }
+
+    {
+        std::regex re("^(.)(?=(.)(?=.(.)))(...)$");
+        assert(re.mark_count() == 4);
+
+        std::string s("abcd");
+        std::smatch m;
+        assert(std::regex_match(s, m, re));
+        assert(m.size() == 5);
+        assert(m[0] == "abcd");
+        assert(m[1] == "a");
+        assert(m[2] == "b");
+        assert(m[3] == "d");
+        assert(m[4] == "bcd");
+    }
+
+    {
+        std::regex re("^(a)(?!([^b]))(.c)$");
+        assert(re.mark_count() == 3);
+
+        std::string s("abc");
+        std::smatch m;
+        assert(std::regex_match(s, m, re));
+        assert(m.size() == 4);
+        assert(m[0] == "abc");
+        assert(m[1] == "a");
+        assert(m[2] == "");
+        assert(m[3] == "bc");
+    }
+
+    {
+        std::regex re("^(?!((b)))(?=(.))(?!(abc)).b$");
+        assert(re.mark_count() == 4);
+
+        std::string s("ab");
+        std::smatch m;
+        assert(std::regex_match(s, m, re));
+        assert(m.size() == 5);
+        assert(m[0] == "ab");
+        assert(m[1] == "");
+        assert(m[2] == "");
+        assert(m[3] == "a");
+        assert(m[4] == "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/parse_curly_brackets.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/parse_curly_brackets.pass.cpp
new file mode 100644
index 0000000..a680baf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.match/parse_curly_brackets.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_match(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// https://llvm.org/PR16135
+
+#include <string>
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::string re("\\{a\\}");
+    std::string target("{a}");
+    std::regex regex(re);
+    std::smatch smatch;
+    assert((std::regex_match(target, smatch, regex)));
+}
+
+void
+test2()
+{
+    std::string re("\\{a\\}");
+    std::string target("{a}");
+    std::regex regex(re, std::regex::extended);
+    std::smatch smatch;
+    assert((std::regex_match(target, smatch, regex)));
+}
+
+void
+test3()
+{
+    std::string re("\\{a\\}");
+    std::string target("{a}");
+    std::regex regex(re, std::regex::awk);
+    std::smatch smatch;
+    assert((std::regex_match(target, smatch, regex)));
+}
+
+void
+test4()
+{
+    std::string re("\\{a\\}");
+    std::string target("{a}");
+    std::regex regex(re, std::regex::egrep);
+    std::smatch smatch;
+    assert((std::regex_match(target, smatch, regex)));
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+    test3();
+    test4();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/exponential.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/exponential.pass.cpp
new file mode 100644
index 0000000..316759f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/exponential.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: no-exceptions
+
+// template <class OutputIterator, class BidirectionalIterator,
+//           class traits, class charT, class ST, class SA>
+//     OutputIterator
+//     regex_replace(OutputIterator out,
+//                   BidirectionalIterator first, BidirectionalIterator last,
+//                   const basic_regex<charT, traits>& e,
+//                   const basic_string<charT, ST, SA>& fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    try {
+        std::regex re("a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaaaaaa");
+        const char s[] = "aaaaaaaaaaaaaaaaaaaa";
+        std::string r = std::regex_replace(s, re, "123-&", std::regex_constants::format_sed);
+        LIBCPP_ASSERT(false);
+        assert(r == "123-aaaaaaaaaaaaaaaaaaaa");
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_complexity);
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test1.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test1.pass.cpp
new file mode 100644
index 0000000..193dd61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test1.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class OutputIterator, class BidirectionalIterator,
+//           class traits, class charT, class ST, class SA>
+//     OutputIterator
+//     regex_replace(OutputIterator out,
+//                   BidirectionalIterator first, BidirectionalIterator last,
+//                   const basic_regex<charT, traits>& e,
+//                   const basic_string<charT, ST, SA>& fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    std::string("123-$&"));
+        assert(base(r) == buf+40);
+        assert(buf == std::string("123-555-1234, 123-555-2345, 123-555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    std::string("123-$&"),
+                                    std::regex_constants::format_sed);
+        assert(base(r) == buf+43);
+        assert(buf == std::string("123-$555-1234, 123-$555-2345, 123-$555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    std::string("123-&"),
+                                    std::regex_constants::format_sed);
+        assert(base(r) == buf+40);
+        assert(buf == std::string("123-555-1234, 123-555-2345, 123-555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    std::string("123-$&"),
+                                    std::regex_constants::format_no_copy);
+        assert(base(r) == buf+36);
+        assert(buf == std::string("123-555-1234123-555-2345123-555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    std::string("123-$&"),
+                                    std::regex_constants::format_first_only);
+        assert(base(r) == buf+32);
+        assert(buf == std::string("123-555-1234, 555-2345, 555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    std::string("123-$&"),
+                                    std::regex_constants::format_first_only |
+                                    std::regex_constants::format_no_copy);
+        assert(base(r) == buf+12);
+        assert(buf == std::string("123-555-1234"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test2.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test2.pass.cpp
new file mode 100644
index 0000000..ed5230a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test2.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class OutputIterator, class BidirectionalIterator,
+//           class traits, class charT, class ST, class SA>
+//     OutputIterator
+//     regex_replace(OutputIterator out,
+//                   BidirectionalIterator first, BidirectionalIterator last,
+//                   const basic_regex<charT, traits>& e,
+//                   const charT* fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    "123-$&");
+        assert(base(r) == buf+40);
+        assert(buf == std::string("123-555-1234, 123-555-2345, 123-555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    "123-$&",
+                                    std::regex_constants::format_sed);
+        assert(base(r) == buf+43);
+        assert(buf == std::string("123-$555-1234, 123-$555-2345, 123-$555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    "123-&",
+                                    std::regex_constants::format_sed);
+        assert(base(r) == buf+40);
+        assert(buf == std::string("123-555-1234, 123-555-2345, 123-555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    "123-$&",
+                                    std::regex_constants::format_no_copy);
+        assert(base(r) == buf+36);
+        assert(buf == std::string("123-555-1234123-555-2345123-555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    "123-$&",
+                                    std::regex_constants::format_first_only);
+        assert(base(r) == buf+32);
+        assert(buf == std::string("123-555-1234, 555-2345, 555-3456"));
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        typedef cpp17_output_iterator<char*> Out;
+        typedef bidirectional_iterator<const char*> Bi;
+        char buf[100] = {0};
+        Out r = std::regex_replace(Out(buf), Bi(std::begin(phone_book)),
+                                    Bi(std::end(phone_book)-1), phone_numbers,
+                                    "123-$&",
+                                    std::regex_constants::format_first_only |
+                                    std::regex_constants::format_no_copy);
+        assert(base(r) == buf+12);
+        assert(buf == std::string("123-555-1234"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test3.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test3.pass.cpp
new file mode 100644
index 0000000..09ecc53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test3.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class traits, class charT, class ST, class SA, class FST, class FSA>>
+//     basic_string<charT, ST, SA>
+//     regex_replace(const basic_string<charT, ST, SA>& s,
+//                   const basic_regex<charT, traits>& e,
+//                   const basic_string<charT, FST, FSA>& fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"));
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_sed);
+        assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-&"),
+                                           std::regex_constants::format_sed);
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234123-555-2345123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_first_only);
+        assert(r == "123-555-1234, 555-2345, 555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_first_only |
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test4.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test4.pass.cpp
new file mode 100644
index 0000000..4d567ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test4.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class traits, class charT, class ST, class SA>
+//     basic_string<charT, ST, SA>
+//     regex_replace(const basic_string<charT, ST, SA>& s,
+//                   const basic_regex<charT, traits>& e, const charT* fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&");
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_sed);
+        assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-&",
+                                           std::regex_constants::format_sed);
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234123-555-2345123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_first_only);
+        assert(r == "123-555-1234, 555-2345, 555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        std::string phone_book("555-1234, 555-2345, 555-3456");
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_first_only |
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test5.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test5.pass.cpp
new file mode 100644
index 0000000..585a60f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test5.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class traits, class charT, class ST, class SA>
+//     basic_string<charT>
+//     regex_replace(const charT* s,
+//                   const basic_regex<charT, traits>& e,
+//                   const basic_string<charT, ST, SA>& fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"));
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_sed);
+        assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-&"),
+                                           std::regex_constants::format_sed);
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234123-555-2345123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_first_only);
+        assert(r == "123-555-1234, 555-2345, 555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           std::string("123-$&"),
+                                           std::regex_constants::format_first_only |
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test6.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test6.pass.cpp
new file mode 100644
index 0000000..66a9101
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.replace/test6.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class traits, class charT>
+//     basic_string<charT>
+//     regex_replace(const charT* s,
+//                   const basic_regex<charT, traits>& e,
+//                   const charT* fmt,
+//                   regex_constants::match_flag_type flags =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&");
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_sed);
+        assert(r == "123-$555-1234, 123-$555-2345, 123-$555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-&",
+                                           std::regex_constants::format_sed);
+        assert(r == "123-555-1234, 123-555-2345, 123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234123-555-2345123-555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_first_only);
+        assert(r == "123-555-1234, 555-2345, 555-3456");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::string r = std::regex_replace(phone_book, phone_numbers,
+                                           "123-$&",
+                                           std::regex_constants::format_first_only |
+                                           std::regex_constants::format_no_copy);
+        assert(r == "123-555-1234");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/awk.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/awk.locale.pass.cpp
new file mode 100644
index 0000000..f2a89d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/awk.locale.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_search(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_search(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::awk | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_search(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::awk | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/awk.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/awk.pass.cpp
new file mode 100644
index 0000000..741a74f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/awk.pass.cpp
@@ -0,0 +1,1491 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("a", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_search(s, m, std::regex("ab", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_search(s, m, std::regex("ba", std::regex_constants::awk)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(std::regex_search(s, m, std::regex("ab", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_search(s, m, std::regex("ab", std::regex_constants::awk),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("bc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "bc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_search(s, m, std::regex("ab*c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_search(s, m, std::regex("(ab)*c", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi",
+                                 std::regex_constants::awk)));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<char>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == "cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == "efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == "e");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("^abc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("^abc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "abc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_search(s, m, std::regex("^abc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("abc$", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(std::regex_search(s, m, std::regex("abc$", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_search(s, m, std::regex("abc$", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_search(s, m, std::regex("(.*).*", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(std::regex_search(s, m, std::regex("(a*)*", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_search(s, m, std::regex("tour|to|tournament",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournamenttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|tournament)+",
+               std::regex_constants::awk | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|t)+",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(!std::regex_search(s, m, std::regex("-(.*),\1-", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_search(s, m, std::regex("-.*,.*-", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[a]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[ab]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_search(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_search(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(std::regex_search(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == "qi");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_search(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_search(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_search(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]*",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "1a45ce");
+    }
+    {
+        const char r[] = "^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr), std::regex_constants::awk);
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "\n\n\n";
+        assert(std::regex_search(s, m, std::regex("[\\n]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"a", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_search(s, m, std::wregex(L"ba", std::regex_constants::awk)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::awk),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"bc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"bc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab*c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_search(s, m, std::wregex(L"(ab)*c", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi",
+                                 std::regex_constants::awk)));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<wchar_t>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == L"cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == L"efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == L"e");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"abc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_search(s, m, std::wregex(L"(.*).*", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(std::regex_search(s, m, std::wregex(L"(a*)*", std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournament";
+        assert(std::regex_search(s, m, std::wregex(L"tour|to|tournament",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournamenttotour";
+        assert(std::regex_search(s, m, std::wregex(L"(tour|to|tournament)+",
+               std::regex_constants::awk | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ttotour";
+        assert(std::regex_search(s, m, std::wregex(L"(tour|to|t)+",
+                                              std::regex_constants::awk)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(!std::regex_search(s, m, std::wregex(L"-(.*),\1-", std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_search(s, m, std::wregex(L"-.*,.*-", std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[a]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[ab]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_search(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_search(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(std::regex_search(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == L"qi");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_search(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_search(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]*",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"1a45ce");
+    }
+    {
+        const wchar_t r[] = L"^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr), std::regex_constants::awk);
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"\n\n\n";
+        assert(std::regex_search(s, m, std::wregex(L"[\\n]+",
+                                                 std::regex_constants::awk)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/backup.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/backup.pass.cpp
new file mode 100644
index 0000000..22d5221
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/backup.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <string>
+#include <list>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    // This regex_iterator uses regex_search(__wrap_iter<_Iter> __first, ...)
+    // Test for https://llvm.org/PR16240 fixed in r185273.
+    {
+        std::string s("aaaa a");
+        std::regex re("\\ba");
+        std::sregex_iterator it(s.begin(), s.end(), re);
+        std::sregex_iterator end = std::sregex_iterator();
+
+        assert(it->position(0) == 0);
+        assert(it->length(0) == 1);
+
+        ++it;
+        assert(it->position(0) == 5);
+        assert(it->length(0) == 1);
+
+        ++it;
+        assert(it == end);
+    }
+
+    // This regex_iterator uses regex_search(_BidirectionalIterator __first, ...)
+    {
+        std::string s("aaaa a");
+        std::list<char> l(s.begin(), s.end());
+        std::regex re("\\ba");
+        std::regex_iterator<std::list<char>::iterator> it(l.begin(), l.end(), re);
+        std::regex_iterator<std::list<char>::iterator> end = std::regex_iterator<std::list<char>::iterator>();
+
+        assert(it->position(0) == 0);
+        assert(it->length(0) == 1);
+
+        ++it;
+        assert(it->position(0) == 5);
+        assert(it->length(0) == 1);
+
+        ++it;
+        assert(it == end);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.compile.fail.cpp
new file mode 100644
index 0000000..fb9677f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.compile.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+//   template <class ST, class SA, class Allocator, class charT, class traits>
+//   bool regex_search(const basic_string<charT, ST, SA>&&,
+//                     match_results<
+//                       typename basic_string<charT, ST, SA>::const_iterator,
+//                       Allocator>&,
+//                     const basic_regex<charT, traits>&,
+//                     regex_constants::match_flag_type =
+//                       regex_constants::match_default) = delete;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+        std::smatch m;
+        std::regex re{"*"};
+        std::regex_search(std::string("abcde"), m, re);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.locale.pass.cpp
new file mode 100644
index 0000000..fff693e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.locale.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_search(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_search(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_search(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.pass.cpp
new file mode 100644
index 0000000..287ca99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/basic.pass.cpp
@@ -0,0 +1,1488 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        assert(!std::regex_search("a", m, std::regex()));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("a", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_search(s, m, std::regex("ab", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_search(s, m, std::regex("ba", std::regex_constants::basic)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(std::regex_search(s, m, std::regex("ab", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_search(s, m, std::regex("ab", std::regex_constants::basic),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("bc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "bc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_search(s, m, std::regex("ab*c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_search(s, m, std::regex("\\(ab\\)*c", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd\\(\\(e\\)fg\\)hi",
+                                 std::regex_constants::basic)));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<char>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == "cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == "efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == "e");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("^abc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("^abc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "abc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_search(s, m, std::regex("^abc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("abc$", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(std::regex_search(s, m, std::regex("abc$", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_search(s, m, std::regex("abc$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_search(s, m, std::regex("\\(.*\\).*", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(std::regex_search(s, m, std::regex("\\(a*\\)*", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_search(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_search(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_search(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_search(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_search(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_search(s, m, std::regex("ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_search(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_search(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_search(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_search(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == sizeof(s)-1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_search(s, m, std::regex("a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_search(s, m, std::regex("-\\(.*\\),\\1-", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababbabb";
+        assert(std::regex_search(s, m, std::regex("^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "abb");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababbab";
+        assert(!std::regex_search(s, m, std::regex("^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aBAbbAbB";
+        assert(std::regex_search(s, m, std::regex("^\\(Ab*\\)*\\1$",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "Abb");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aBAbbAbB";
+        assert(!std::regex_search(s, m, std::regex("^\\(Ab*\\)*\\1$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[a]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[ab]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_search(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_search(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(std::regex_search(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == "qi");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_search(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_search(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_search(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]*",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]\\{1,\\}",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "1a45ce");
+    }
+    {
+        const char r[] = "^[-+]\\{0,1\\}[0-9]\\{1,\\}[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr), std::regex_constants::basic);
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        assert(!std::regex_search(L"a", m, std::wregex()));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"a", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_search(s, m, std::wregex(L"ba", std::regex_constants::basic)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::basic),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"bc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"bc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab*c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_search(s, m, std::wregex(L"\\(ab\\)*c", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd\\(\\(e\\)fg\\)hi",
+                                 std::regex_constants::basic)));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<wchar_t>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == L"cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == L"efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == L"e");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"abc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_search(s, m, std::wregex(L"\\(.*\\).*", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(std::regex_search(s, m, std::wregex(L"\\(a*\\)*", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_search(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_search(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_search(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_search(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_search(s, m, std::wregex(L"a.\\{3,5\\}c", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_search(s, m, std::wregex(L"-\\(.*\\),\\1-", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababbabb";
+        assert(std::regex_search(s, m, std::wregex(L"^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"abb");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababbab";
+        assert(!std::regex_search(s, m, std::wregex(L"^\\(ab*\\)*\\1$", std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aBAbbAbB";
+        assert(std::regex_search(s, m, std::wregex(L"^\\(Ab*\\)*\\1$",
+                   std::regex_constants::basic | std::regex_constants::icase)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"Abb");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aBAbbAbB";
+        assert(!std::regex_search(s, m, std::wregex(L"^\\(Ab*\\)*\\1$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[a]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[ab]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_search(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_search(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(std::regex_search(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == L"qi");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_search(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_search(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]*",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]\\{1,\\}",
+                                                 std::regex_constants::basic)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"1a45ce");
+    }
+    {
+        const wchar_t r[] = L"^[-+]\\{0,1\\}[0-9]\\{1,\\}[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr), std::regex_constants::basic);
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    { // LWG 2273
+        std::regex re("Foo|FooBar");
+        std::cmatch m;
+        {
+            assert(std::regex_search("FooBar", m, re));
+            assert(m.size() == 1);
+            assert(m[0] == "Foo");
+        }
+        {
+            assert(std::regex_search("Foo", m, re));
+            assert(m.size() == 1);
+            assert(m[0] == "Foo");
+        }
+        {
+            assert(std::regex_search("FooBarBaz", m, re));
+            assert(m.size() == 1);
+            assert(m[0] == "Foo");
+        }
+        {
+            assert(std::regex_search("FooBa", m, re));
+            assert(m.size() == 1);
+            assert(m[0] == "Foo");
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/ecma.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/ecma.locale.pass.cpp
new file mode 100644
index 0000000..bb80b16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/ecma.locale.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_search(s, m, std::regex("[a[=M=]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_search(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[=M=]z]")));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_search(s, m, std::wregex(L"[a[=M=]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[=M=]z]")));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/ecma.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/ecma.pass.cpp
new file mode 100644
index 0000000..00977d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/ecma.pass.cpp
@@ -0,0 +1,1509 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("a")));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_search(s, m, std::regex("ab")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_search(s, m, std::regex("ba")));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(std::regex_search(s, m, std::regex("ab")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_search(s, m, std::regex("ab"),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("bc")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "bc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_search(s, m, std::regex("ab*c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_search(s, m, std::regex("(ab)*c")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<char>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == "cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == "efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == "e");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("^abc")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("^abc")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "abc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_search(s, m, std::regex("^abc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("abc$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(std::regex_search(s, m, std::regex("abc$")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_search(s, m, std::regex("abc$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_search(s, m, std::regex("(.*).*")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(std::regex_search(s, m, std::regex("(a*)*")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_search(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_search(s, m, std::regex("a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_search(s, m, std::regex("tour|to|tournament")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournamenttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|tournament)+",
+               std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|t)+")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(!std::regex_search(s, m, std::regex("-(.*),\1-")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_search(s, m, std::regex("-.*,.*-")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[a]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[ab]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_search(s, m, std::regex("^[a-f]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_search(s, m, std::regex("^[a-f]$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(std::regex_search(s, m, std::regex("q[^u]")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == "qi");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_search(s, m, std::regex("q[^u]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_search(s, m, std::regex("A[[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_search(s, m, std::regex("A[[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[.hyphen.]z]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]*")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]+")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "1a45ce");
+    }
+    {
+        const char r[] = "^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr));
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Jeff Jeffs ";
+        assert(std::regex_search(s, m, std::regex("Jeff(?=s\\b)")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 5);
+        assert(m.str(0) == "Jeff");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Jeffs Jeff";
+        assert(std::regex_search(s, m, std::regex("Jeff(?!s\\b)")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 6);
+        assert(m.str(0) == "Jeff");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "5%k";
+        assert(std::regex_search(s, m, std::regex("\\d[\\W]k")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"a")));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_search(s, m, std::wregex(L"ab")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_search(s, m, std::wregex(L"ba")));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(std::regex_search(s, m, std::wregex(L"ab")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_search(s, m, std::wregex(L"ab"),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"bc")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"bc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab*c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_search(s, m, std::wregex(L"(ab)*c")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<wchar_t>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == L"cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == L"efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == L"e");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"^abc")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"^abc")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"abc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_search(s, m, std::wregex(L"^abc")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_search(s, m, std::wregex(L"abc$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_search(s, m, std::wregex(L"(.*).*")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(std::regex_search(s, m, std::wregex(L"(a*)*")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_search(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_search(s, m, std::wregex(L"a.{3,5}c")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournament";
+        assert(std::regex_search(s, m, std::wregex(L"tour|to|tournament")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournamenttotour";
+        assert(std::regex_search(s, m, std::wregex(L"(tour|to|tournament)+",
+               std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ttotour";
+        assert(std::regex_search(s, m, std::wregex(L"(tour|to|t)+")));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(!std::regex_search(s, m, std::wregex(L"-(.*),\1-")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_search(s, m, std::wregex(L"-.*,.*-")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[a]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[ab]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_search(s, m, std::wregex(L"^[a-f]$")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_search(s, m, std::wregex(L"^[a-f]$")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(std::regex_search(s, m, std::wregex(L"q[^u]")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == L"qi");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_search(s, m, std::wregex(L"q[^u]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_search(s, m, std::wregex(L"A[[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]")));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]*")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]+")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"1a45ce");
+    }
+    {
+        const wchar_t r[] = L"^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr));
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Jeff Jeffs ";
+        assert(std::regex_search(s, m, std::wregex(L"Jeff(?=s\\b)")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 5);
+        assert(m.str(0) == L"Jeff");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Jeffs Jeff";
+        assert(std::regex_search(s, m, std::wregex(L"Jeff(?!s\\b)")));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 6);
+        assert(m.str(0) == L"Jeff");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"5%k";
+        assert(std::regex_search(s, m, std::wregex(L"\\d[\\W]k")));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/egrep.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/egrep.pass.cpp
new file mode 100644
index 0000000..df8560f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/egrep.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_search(s, m, std::regex("tour\nto\ntournament",
+                std::regex_constants::egrep)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 10);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tournament");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ment";
+        assert(std::regex_search(s, m, std::regex("tour\n\ntournament",
+                std::regex_constants::egrep)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_search(s, m, std::regex("(tour|to|tournament)+\ntourna",
+                std::regex_constants::egrep)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 10);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tournament");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tourna";
+        assert(std::regex_search(s, m, std::regex("(tour|to|tournament)+\ntourna",
+                std::regex_constants::egrep)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tourna");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/exponential.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/exponential.pass.cpp
new file mode 100644
index 0000000..64a6a13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/exponential.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: c++03
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// Throw exception after spent too many cycles with respect to the length of the input string.
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**) {
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    try {
+      bool b = std::regex_search(
+          "aaaaaaaaaaaaaaaaaaaa",
+          std::regex(
+              "a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaaaaaa",
+              op));
+      LIBCPP_ASSERT(false);
+      assert(b);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_complexity);
+    }
+  }
+  std::string s(100000, 'a');
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    assert(std::regex_search(s, std::regex("a*", op)));
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/extended.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/extended.locale.pass.cpp
new file mode 100644
index 0000000..bbe39e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/extended.locale.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}, freebsd
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(std::regex_search(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Ch";
+        assert(std::regex_search(s, m, std::regex("[a[.ch.]z]",
+                   std::regex_constants::extended | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(std::regex_search(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Ch";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.ch.]z]",
+                   std::regex_constants::extended | std::regex_constants::icase)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    std::locale::global(std::locale("C"));
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[=M=]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/extended.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/extended.pass.cpp
new file mode 100644
index 0000000..8ffedfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/extended.pass.cpp
@@ -0,0 +1,1495 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("a", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(std::regex_search(s, m, std::regex("ab", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ab";
+        assert(!std::regex_search(s, m, std::regex("ba", std::regex_constants::extended)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(std::regex_search(s, m, std::regex("ab", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aab";
+        assert(!std::regex_search(s, m, std::regex("ab", std::regex_constants::extended),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("bc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "bc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(std::regex_search(s, m, std::regex("ab*c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ababc";
+        assert(std::regex_search(s, m, std::regex("(ab)*c", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi",
+                                 std::regex_constants::extended)));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<char>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == "cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == "efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == "e");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("^abc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcd";
+        assert(std::regex_search(s, m, std::regex("^abc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "abc");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "aabc";
+        assert(!std::regex_search(s, m, std::regex("^abc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("abc$", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabc";
+        assert(std::regex_search(s, m, std::regex("abc$", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "efabcg";
+        assert(!std::regex_search(s, m, std::regex("abc$", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "acc";
+        assert(std::regex_search(s, m, std::regex("a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abcdef";
+        assert(std::regex_search(s, m, std::regex("(.*).*", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "bc";
+        assert(std::regex_search(s, m, std::regex("(a*)*", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbc";
+        assert(std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "abbbbbbc";
+        assert(!std::regex_search(s, m, std::regex("ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adec";
+        assert(!std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefgc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghc";
+        assert(std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "adefghic";
+        assert(!std::regex_search(s, m, std::regex("a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_search(s, m, std::regex("tour|to|tournament",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "tournamenttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|tournament)+",
+               std::regex_constants::extended | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ttotour";
+        assert(std::regex_search(s, m, std::regex("(tour|to|t)+",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == "tour");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(!std::regex_search(s, m, std::regex("-(.*),\1-", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_search(s, m, std::regex("-(.*),\\1-", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == "ab");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-ab,ab-";
+        assert(std::regex_search(s, m, std::regex("-.*,.*-", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[a]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "a";
+        assert(std::regex_search(s, m, std::regex("^[ab]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "a");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "c";
+        assert(std::regex_search(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "g";
+        assert(!std::regex_search(s, m, std::regex("^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraqi";
+        assert(std::regex_search(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == "qi");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "Iraq";
+        assert(!std::regex_search(s, m, std::regex("q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(std::regex_search(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(!std::regex_search(s, m, std::regex("A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AMB";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "AmB";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A5B";
+        assert(!std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "A?B";
+        assert(std::regex_search(s, m, std::regex("A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "-";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "z";
+        assert(std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<char>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "m";
+        assert(!std::regex_search(s, m, std::regex("[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]*",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "01a45cef9";
+        assert(std::regex_search(s, m, std::regex("[ace1-9]+",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == "1a45ce");
+    }
+    {
+        const char r[] = "^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<char>::length(r);
+        typedef forward_iterator<const char*> FI;
+        typedef bidirectional_iterator<const char*> BI;
+        std::regex regex(FI(r), FI(r+sr), std::regex_constants::extended);
+        std::match_results<BI> m;
+        const char s[] = "-40C";
+        std::ptrdiff_t ss = std::char_traits<char>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"a", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.empty());
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+1);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ab";
+        assert(!std::regex_search(s, m, std::wregex(L"ba", std::regex_constants::extended)));
+        assert(m.size() == 0);
+        assert(m.empty());
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aab";
+        assert(!std::regex_search(s, m, std::wregex(L"ab", std::regex_constants::extended),
+                                            std::regex_constants::match_continuous));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"bc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"bc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab*c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ababc";
+        assert(std::regex_search(s, m, std::wregex(L"(ab)*c", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 5);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 2);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi",
+                                 std::regex_constants::extended)));
+        assert(m.size() == 3);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+std::regex_traits<wchar_t>::length(s));
+        assert(m.length(0) == 7);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == L"cdefghi");
+        assert(m.length(1) == 3);
+        assert(m.position(1) == 4);
+        assert(m.str(1) == L"efg");
+        assert(m.length(2) == 1);
+        assert(m.position(2) == 4);
+        assert(m.str(2) == L"e");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcd";
+        assert(std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+4);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"abc");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"aabc";
+        assert(!std::regex_search(s, m, std::wregex(L"^abc", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabc";
+        assert(std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+5);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 2);
+        assert(m.str(0) == s+2);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"efabcg";
+        assert(!std::regex_search(s, m, std::wregex(L"abc$", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"acc";
+        assert(std::regex_search(s, m, std::wregex(L"a.c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+3);
+        assert(m.length(0) == 3);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abcdef";
+        assert(std::regex_search(s, m, std::wregex(L"(.*).*", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+6);
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 6);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"bc";
+        assert(std::regex_search(s, m, std::wregex(L"(a*)*", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s+2);
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+        assert(m.length(1) == 0);
+        assert(m.position(1) == 0);
+        assert(m.str(1) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbc";
+        assert(std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"abbbbbbc";
+        assert(!std::regex_search(s, m, std::wregex(L"ab{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adec";
+        assert(!std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefgc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghc";
+        assert(std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"adefghic";
+        assert(!std::regex_search(s, m, std::wregex(L"a.{3,5}c", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournament";
+        assert(std::regex_search(s, m, std::wregex(L"tour|to|tournament",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"tournamenttotour";
+        assert(std::regex_search(s, m, std::wregex(L"(tour|to|tournament)+",
+               std::regex_constants::extended | std::regex_constants::nosubs)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"ttotour";
+        assert(std::regex_search(s, m, std::wregex(L"(tour|to|t)+",
+                                              std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 4);
+        assert(m.position(1) == 3);
+        assert(m.str(1) == L"tour");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(!std::regex_search(s, m, std::wregex(L"-(.*),\1-", std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_search(s, m, std::wregex(L"-(.*),\\1-", std::regex_constants::extended)));
+        assert(m.size() == 2);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+        assert(m.length(1) == 2);
+        assert(m.position(1) == 1);
+        assert(m.str(1) == L"ab");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-ab,ab-";
+        assert(std::regex_search(s, m, std::wregex(L"-.*,.*-", std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[a]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"a";
+        assert(std::regex_search(s, m, std::wregex(L"^[ab]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"a");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"c";
+        assert(std::regex_search(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 1);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"g";
+        assert(!std::regex_search(s, m, std::wregex(L"^[a-f]$",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraqi";
+        assert(std::regex_search(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 2);
+        assert(m.position(0) == 3);
+        assert(m.str(0) == L"qi");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"Iraq";
+        assert(!std::regex_search(s, m, std::wregex(L"q[^u]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(std::regex_search(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AMB";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"AmB";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A5B";
+        assert(!std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"A?B";
+        assert(std::regex_search(s, m, std::wregex(L"A[^[:lower:]0-9]B",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"-";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"z";
+        assert(std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) >= 0 && static_cast<size_t>(m.length(0)) == std::char_traits<wchar_t>::length(s));
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"m";
+        assert(!std::regex_search(s, m, std::wregex(L"[a[.hyphen.]z]",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 0);
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]*",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == L"");
+    }
+    {
+        std::wcmatch m;
+        const wchar_t s[] = L"01a45cef9";
+        assert(std::regex_search(s, m, std::wregex(L"[ace1-9]+",
+                                                 std::regex_constants::extended)));
+        assert(m.size() == 1);
+        assert(m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<wchar_t>::length(s));
+        assert(m.length(0) == 6);
+        assert(m.position(0) == 1);
+        assert(m.str(0) == L"1a45ce");
+    }
+    {
+        const wchar_t r[] = L"^[-+]?[0-9]+[CF]$";
+        std::ptrdiff_t sr = std::char_traits<wchar_t>::length(r);
+        typedef forward_iterator<const wchar_t*> FI;
+        typedef bidirectional_iterator<const wchar_t*> BI;
+        std::wregex regex(FI(r), FI(r+sr), std::regex_constants::extended);
+        std::match_results<BI> m;
+        const wchar_t s[] = L"-40C";
+        std::ptrdiff_t ss = std::char_traits<wchar_t>::length(s);
+        assert(std::regex_search(BI(s), BI(s+ss), m, regex));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == BI(s));
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == m[0].second);
+        assert(m.length(0) == 4);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == s);
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/grep.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/grep.pass.cpp
new file mode 100644
index 0000000..29300a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/grep.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+extern "C" void LLVMFuzzerTestOneInput(const char *data)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    size_t size = strlen(data);
+    if (size > 0)
+    {
+        try
+        {
+            std::regex::flag_type flag = std::regex_constants::grep;
+            std::string s((const char *)data, size);
+            std::regex re(s, flag);
+            TEST_IGNORE_NODISCARD std::regex_match(s, re);
+        }
+        catch (std::regex_error &) {}
+    }
+#else
+    ((void)data);
+#endif
+}
+
+
+void fuzz_tests()  // patterns that the fuzzer has found
+{
+// Raw string literals are a C++11 feature.
+#if TEST_STD_VER >= 11
+    LLVMFuzzerTestOneInput(R"XX(Õ)_%()()((\8'_%()_%()_%()_%(()_%()_%()_%(.t;)()¥f()_%()(.)_%;)()!¥f(((()()XX");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::cmatch m;
+        const char s[] = "tournament";
+        assert(std::regex_search(s, m, std::regex("tour\nto\ntournament",
+                std::regex_constants::grep)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(!m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 10);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "tournament");
+    }
+    {
+        std::cmatch m;
+        const char s[] = "ment";
+        assert(std::regex_search(s, m, std::regex("tour\n\ntournament",
+                std::regex_constants::grep)));
+        assert(m.size() == 1);
+        assert(!m.prefix().matched);
+        assert(m.prefix().first == s);
+        assert(m.prefix().second == m[0].first);
+        assert(m.suffix().matched);
+        assert(m.suffix().first == m[0].second);
+        assert(m.suffix().second == s + std::char_traits<char>::length(s));
+        assert(m.length(0) == 0);
+        assert(m.position(0) == 0);
+        assert(m.str(0) == "");
+    }
+    fuzz_tests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/invert_neg_word_search.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/invert_neg_word_search.pass.cpp
new file mode 100644
index 0000000..9334bcc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/invert_neg_word_search.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+// PR34310
+int main(int, char**)
+{
+  assert(std::regex_search("HelloWorld", std::regex("[^\\W]")));
+  assert(std::regex_search("_", std::regex("[^\\W]")));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/lookahead.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/lookahead.pass.cpp
new file mode 100644
index 0000000..1a3ebfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/lookahead.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+// https://llvm.org/PR11118
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(!std::regex_search("ab", std::regex("(?=^)b")));
+    assert(!std::regex_search("ab", std::regex("a(?=^)b")));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/no_update_pos.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/no_update_pos.pass.cpp
new file mode 100644
index 0000000..73158dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.alg.search/no_update_pos.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator, class Allocator, class charT, class traits>
+//     bool
+//     regex_search(BidirectionalIterator first, BidirectionalIterator last,
+//                  match_results<BidirectionalIterator, Allocator>& m,
+//                  const basic_regex<charT, traits>& e,
+//                  regex_constants::match_flag_type flags = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    // Iterating over /^a/ should yield one instance at the beginning
+    // of the text.
+
+    const char *text = "aaa\naa";
+    std::regex re("^a");
+    std::cregex_iterator it(text, text+6, re);
+    std::cregex_iterator end = std::cregex_iterator();
+
+    assert(it->str() == "a");
+    assert(it->position(0) == 0);
+    assert(it->length(0) == 1);
+
+    ++it;
+    assert(it == end);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.alg/re.except/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.except/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.alg/re.except/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.badexp/regex_error.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.badexp/regex_error.pass.cpp
new file mode 100644
index 0000000..f1a1237
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.badexp/regex_error.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_error
+//     : public runtime_error
+// {
+// public:
+//     explicit regex_error(regex_constants::error_type ecode);
+//     regex_constants::error_type code() const;
+// };
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex_error e(std::regex_constants::error_collate);
+        assert(e.code() == std::regex_constants::error_collate);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained an invalid collating element name."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_ctype);
+        assert(e.code() == std::regex_constants::error_ctype);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained an invalid character class name."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_escape);
+        assert(e.code() == std::regex_constants::error_escape);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained an invalid escaped character, or a "
+               "trailing escape."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_backref);
+        assert(e.code() == std::regex_constants::error_backref);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained an invalid back reference."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_brack);
+        assert(e.code() == std::regex_constants::error_brack);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained mismatched [ and ]."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_paren);
+        assert(e.code() == std::regex_constants::error_paren);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained mismatched ( and )."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_brace);
+        assert(e.code() == std::regex_constants::error_brace);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained mismatched { and }."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_badbrace);
+        assert(e.code() == std::regex_constants::error_badbrace);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained an invalid range in a {} expression."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_range);
+        assert(e.code() == std::regex_constants::error_range);
+        LIBCPP_ASSERT(e.what() == std::string("The expression contained an invalid character range, "
+               "such as [b-a] in most encodings."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_space);
+        assert(e.code() == std::regex_constants::error_space);
+        LIBCPP_ASSERT(e.what() == std::string("There was insufficient memory to convert the expression into "
+               "a finite state machine."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_badrepeat);
+        assert(e.code() == std::regex_constants::error_badrepeat);
+        LIBCPP_ASSERT(e.what() == std::string("One of *?+{ was not preceded by a valid regular expression."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_complexity);
+        assert(e.code() == std::regex_constants::error_complexity);
+        LIBCPP_ASSERT(e.what() == std::string("The complexity of an attempted match against a regular "
+               "expression exceeded a pre-set level."));
+    }
+    {
+        std::regex_error e(std::regex_constants::error_stack);
+        assert(e.code() == std::regex_constants::error_stack);
+        LIBCPP_ASSERT(e.what() == std::string("There was insufficient memory to determine whether the regular "
+               "expression could match the specified character sequence."));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.err/error_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.err/error_type.pass.cpp
new file mode 100644
index 0000000..75a6951
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.err/error_type.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// namespace regex_constants
+// {
+//
+// enum error_type
+// {
+//     error_collate    = unspecified,
+//     error_ctype      = unspecified,
+//     error_escape     = unspecified,
+//     error_backref    = unspecified,
+//     error_brack      = unspecified,
+//     error_paren      = unspecified,
+//     error_brace      = unspecified,
+//     error_badbrace   = unspecified,
+//     error_range      = unspecified,
+//     error_space      = unspecified,
+//     error_badrepeat  = unspecified,
+//     error_complexity = unspecified,
+//     error_stack      = unspecified
+// };
+//
+// }
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    LIBCPP_ASSERT(std::regex_constants::error_collate != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_ctype != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_escape != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_backref != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_brack != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_paren != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_brace != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_badbrace != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_range != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_space != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_badrepeat != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_complexity != 0);
+    LIBCPP_ASSERT(std::regex_constants::error_stack != 0);
+
+    assert(std::regex_constants::error_collate != std::regex_constants::error_ctype);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_escape);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_backref);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_brack);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_paren);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_brace);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_range);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_space);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_collate != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_escape);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_backref);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_brack);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_paren);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_brace);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_range);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_space);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_ctype != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_escape != std::regex_constants::error_backref);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_brack);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_paren);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_brace);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_range);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_space);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_escape != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_backref != std::regex_constants::error_brack);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_paren);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_brace);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_range);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_space);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_backref != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_brack != std::regex_constants::error_paren);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_brace);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_range);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_space);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_brack != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_paren != std::regex_constants::error_brace);
+    assert(std::regex_constants::error_paren != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_paren != std::regex_constants::error_range);
+    assert(std::regex_constants::error_paren != std::regex_constants::error_space);
+    assert(std::regex_constants::error_paren != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_paren != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_paren != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_brace != std::regex_constants::error_badbrace);
+    assert(std::regex_constants::error_brace != std::regex_constants::error_range);
+    assert(std::regex_constants::error_brace != std::regex_constants::error_space);
+    assert(std::regex_constants::error_brace != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_brace != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_brace != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_badbrace != std::regex_constants::error_range);
+    assert(std::regex_constants::error_badbrace != std::regex_constants::error_space);
+    assert(std::regex_constants::error_badbrace != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_badbrace != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_badbrace != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_range != std::regex_constants::error_space);
+    assert(std::regex_constants::error_range != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_range != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_range != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_space != std::regex_constants::error_badrepeat);
+    assert(std::regex_constants::error_space != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_space != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_badrepeat != std::regex_constants::error_complexity);
+    assert(std::regex_constants::error_badrepeat != std::regex_constants::error_stack);
+
+    assert(std::regex_constants::error_complexity != std::regex_constants::error_stack);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_flag_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_flag_type.pass.cpp
new file mode 100644
index 0000000..242195c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_flag_type.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// namespace regex_constants
+// {
+//
+// emum match_flag_type  // bitmask type
+// {
+//     match_default     = 0,
+//     match_not_bol     = unspecified,
+//     match_not_eol     = unspecified,
+//     match_not_bow     = unspecified,
+//     match_not_eow     = unspecified,
+//     match_any         = unspecified,
+//     match_not_null    = unspecified,
+//     match_continuous  = unspecified,
+//     match_prev_avail  = unspecified,
+//     format_default    = 0,
+//     format_sed        = unspecified,
+//     format_no_copy    = unspecified,
+//     format_first_only = unspecified
+// };
+//
+// }
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::regex_constants::match_default == 0);
+    assert(std::regex_constants::match_not_bol != 0);
+    assert(std::regex_constants::match_not_eol != 0);
+    assert(std::regex_constants::match_not_bow != 0);
+    assert(std::regex_constants::match_not_eow != 0);
+    assert(std::regex_constants::match_any != 0);
+    assert(std::regex_constants::match_not_null != 0);
+    assert(std::regex_constants::match_continuous != 0);
+    assert(std::regex_constants::match_prev_avail != 0);
+    assert(std::regex_constants::format_default == 0);
+    assert(std::regex_constants::format_sed != 0);
+    assert(std::regex_constants::format_no_copy != 0);
+    assert(std::regex_constants::format_first_only != 0);
+
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_not_eol) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_not_bow) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_not_eow) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_any) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_not_null) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_continuous) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_not_bol & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_not_eol & std::regex_constants::match_not_bow) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::match_not_eow) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::match_any) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::match_not_null) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::match_continuous) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_not_eol & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_not_bow & std::regex_constants::match_not_eow) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::match_any) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::match_not_null) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::match_continuous) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_not_bow & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_not_eow & std::regex_constants::match_any) == 0);
+    assert((std::regex_constants::match_not_eow & std::regex_constants::match_not_null) == 0);
+    assert((std::regex_constants::match_not_eow & std::regex_constants::match_continuous) == 0);
+    assert((std::regex_constants::match_not_eow & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_not_eow & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_not_eow & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_not_eow & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_any & std::regex_constants::match_not_null) == 0);
+    assert((std::regex_constants::match_any & std::regex_constants::match_continuous) == 0);
+    assert((std::regex_constants::match_any & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_any & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_any & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_any & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_not_null & std::regex_constants::match_continuous) == 0);
+    assert((std::regex_constants::match_not_null & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_not_null & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_not_null & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_not_null & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_continuous & std::regex_constants::match_prev_avail) == 0);
+    assert((std::regex_constants::match_continuous & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_continuous & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_continuous & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::match_prev_avail & std::regex_constants::format_sed) == 0);
+    assert((std::regex_constants::match_prev_avail & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::match_prev_avail & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::format_sed & std::regex_constants::format_no_copy) == 0);
+    assert((std::regex_constants::format_sed & std::regex_constants::format_first_only) == 0);
+
+    assert((std::regex_constants::format_no_copy & std::regex_constants::format_first_only) == 0);
+
+    std::regex_constants::match_flag_type e1 = std::regex_constants::match_not_bol;
+    std::regex_constants::match_flag_type e2 = std::regex_constants::match_not_eol;
+    e1 = ~e1;
+    e1 = e1 & e2;
+    e1 = e1 | e2;
+    e1 = e1 ^ e2;
+    e1 &= e2;
+    e1 |= e2;
+    e1 ^= e2;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_multiline.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_multiline.pass.cpp
new file mode 100644
index 0000000..91cffaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_multiline.pass.cpp
@@ -0,0 +1,271 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <regex>
+
+// multiline:
+//     Specifies that ^ shall match the beginning of a line and $ shall match
+//     the end of a line, if the ECMAScript engine is selected.
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+static void search(const char* pat, std::regex_constants::syntax_option_type f,
+                   const char* target, bool expected)
+{
+    std::regex re(pat, f);
+    std::cmatch m;
+    assert(std::regex_search(target, m, re) == expected);
+
+    if(expected) {
+        assert(m.size() == 1);
+        assert(m.length(0) == 3);
+        assert(m.str(0) == "foo");
+    }
+    else
+    {
+        assert(m.size() == 0);
+    }
+}
+
+int main(int, char**)
+{
+    using std::regex_constants::ECMAScript;
+    using std::regex_constants::basic;
+    using std::regex_constants::extended;
+    using std::regex_constants::awk;
+    using std::regex_constants::grep;
+    using std::regex_constants::egrep;
+    using std::regex_constants::multiline;
+
+    {
+        const char* pat = "^foo";
+        const char* target = "foo";
+
+        search(pat, ECMAScript, target, true);
+        search(pat, basic, target, true);
+        search(pat, extended, target, true);
+        search(pat, awk, target, true);
+        search(pat, grep, target, true);
+        search(pat, egrep, target, true);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, true);
+        search(pat, extended | multiline, target, true);
+        search(pat, awk | multiline, target, true);
+        search(pat, grep | multiline, target, true);
+        search(pat, egrep | multiline, target, true);
+    }
+    {
+        const char* pat = "^foo";
+        const char* target = "\nfoo";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+    {
+        const char* pat = "^foo";
+        const char* target = "bar\nfoo";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+
+    {
+        const char* pat = "foo$";
+        const char* target = "foo";
+
+        search(pat, ECMAScript, target, true);
+        search(pat, basic, target, true);
+        search(pat, extended, target, true);
+        search(pat, awk, target, true);
+        search(pat, grep, target, true);
+        search(pat, egrep, target, true);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, true);
+        search(pat, extended | multiline, target, true);
+        search(pat, awk | multiline, target, true);
+        search(pat, grep | multiline, target, true);
+        search(pat, egrep | multiline, target, true);
+    }
+    {
+        const char* pat = "foo$";
+        const char* target = "foo\n";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+    {
+        const char* pat = "foo$";
+        const char* target = "foo\nbar";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+
+
+    {
+        const char* pat = "^foo";
+        const char* target = "foo";
+
+        search(pat, ECMAScript, target, true);
+        search(pat, basic, target, true);
+        search(pat, extended, target, true);
+        search(pat, awk, target, true);
+        search(pat, grep, target, true);
+        search(pat, egrep, target, true);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, true);
+        search(pat, extended | multiline, target, true);
+        search(pat, awk | multiline, target, true);
+        search(pat, grep | multiline, target, true);
+        search(pat, egrep | multiline, target, true);
+    }
+    {
+        const char* pat = "^foo";
+        const char* target = "\rfoo";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+    {
+        const char* pat = "^foo";
+        const char* target = "bar\rfoo";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+
+    {
+        const char* pat = "foo$";
+        const char* target = "foo";
+
+        search(pat, ECMAScript, target, true);
+        search(pat, basic, target, true);
+        search(pat, extended, target, true);
+        search(pat, awk, target, true);
+        search(pat, grep, target, true);
+        search(pat, egrep, target, true);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, true);
+        search(pat, extended | multiline, target, true);
+        search(pat, awk | multiline, target, true);
+        search(pat, grep | multiline, target, true);
+        search(pat, egrep | multiline, target, true);
+    }
+    {
+        const char* pat = "foo$";
+        const char* target = "foo\r";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+    {
+        const char* pat = "foo$";
+        const char* target = "foo\rbar";
+
+        search(pat, ECMAScript, target, false);
+        search(pat, basic, target, false);
+        search(pat, extended, target, false);
+        search(pat, awk, target, false);
+        search(pat, grep, target, false);
+        search(pat, egrep, target, false);
+
+        search(pat, ECMAScript | multiline, target, true);
+        search(pat, basic | multiline, target, false);
+        search(pat, extended | multiline, target, false);
+        search(pat, awk | multiline, target, false);
+        search(pat, grep | multiline, target, false);
+        search(pat, egrep | multiline, target, false);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_bol.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_bol.pass.cpp
new file mode 100644
index 0000000..6522d42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_bol.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// match_not_bol:
+//     The first character in the sequence [first,last) shall be treated as
+//     though it is not at the beginning of a line, so the character ^ in the
+//     regular expression shall not match [first,first).
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::string target = "foo";
+    std::regex re("^foo");
+    assert( std::regex_match(target, re));
+    assert(!std::regex_match(target, re, std::regex_constants::match_not_bol));
+    }
+
+    {
+    std::string target = "foo";
+    std::regex re("foo");
+    assert( std::regex_match(target, re));
+    assert( std::regex_match(target, re, std::regex_constants::match_not_bol));
+    }
+
+    {
+    std::string target = "fooby";
+    std::regex re("^foo");
+    assert( std::regex_search(target, re));
+    assert(!std::regex_search(target, re, std::regex_constants::match_not_bol));
+    }
+
+    {
+    std::string target = "fooby";
+    std::regex re("foo");
+    assert( std::regex_search(target, re));
+    assert( std::regex_search(target, re, std::regex_constants::match_not_bol));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_eol.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_eol.pass.cpp
new file mode 100644
index 0000000..edeea51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_eol.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// match_not_eol:
+//     The last character in the sequence [first,last) shall be treated as
+//     though it is not at the end of a line, so the character "$" in
+//     the regular expression shall not match [last,last).
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::string target = "foo";
+    std::regex re("foo$");
+    assert( std::regex_match(target, re));
+    assert(!std::regex_match(target, re, std::regex_constants::match_not_eol));
+    }
+
+    {
+    std::string target = "foo";
+    std::regex re("foo");
+    assert( std::regex_match(target, re));
+    assert( std::regex_match(target, re, std::regex_constants::match_not_eol));
+    }
+
+    {
+    std::string target = "refoo";
+    std::regex re("foo$");
+    assert( std::regex_search(target, re));
+    assert(!std::regex_search(target, re, std::regex_constants::match_not_eol));
+    }
+
+    {
+    std::string target = "refoo";
+    std::regex re("foo");
+    assert( std::regex_search(target, re));
+    assert( std::regex_search(target, re, std::regex_constants::match_not_eol));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_null.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_null.pass.cpp
new file mode 100644
index 0000000..645f79a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_not_null.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// match_not_null:
+//     The regular expression shall not match an empty sequence.
+
+#include "test_macros.h"
+#include <cassert>
+#include <regex>
+
+int main(int, char**)
+{
+  // When match_not_null is on, the regex engine should reject empty matches and
+  // move on to try other solutions.
+  std::cmatch m;
+  assert(!std::regex_search("a", m, std::regex("b*"),
+                            std::regex_constants::match_not_null));
+  assert(std::regex_search("aa", m, std::regex("a*?"),
+                           std::regex_constants::match_not_null));
+  assert(m[0].length() == 1);
+  assert(!std::regex_search("a", m, std::regex("b*", std::regex::extended),
+                            std::regex_constants::match_not_null));
+  assert(!std::regex_search(
+      "a", m,
+      std::regex("b*", std::regex::extended | std::regex_constants::nosubs),
+      std::regex_constants::match_not_null));
+
+  assert(!std::regex_match("", m, std::regex("a*"),
+                           std::regex_constants::match_not_null));
+  assert(!std::regex_match("", m, std::regex("a*", std::regex::extended),
+                           std::regex_constants::match_not_null));
+  assert(!std::regex_match(
+      "", m,
+      std::regex("a*", std::regex::extended | std::regex_constants::nosubs),
+      std::regex_constants::match_not_null));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_prev_avail.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_prev_avail.pass.cpp
new file mode 100644
index 0000000..508b8dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.matchflag/match_prev_avail.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// match_prev_avail:
+//     --first is a valid iterator position. When this flag is set the flags
+//     match_not_bol and match_not_bow shall be ignored by the regular
+//     expression algorithms (30.11) and iterators (30.12)
+
+#include <regex>
+
+#include <cassert>
+#include <string>
+
+int main(int, char**) {
+  char str1[] = "\na";
+  auto str1_scnd = str1 + 1;
+
+  // Assert that match_prev_avail disables match_not_bol and this matches
+  assert(std::regex_match(str1 + 1, str1 + 2, std::regex("^a"),
+                     std::regex_constants::match_not_bol |
+                         std::regex_constants::match_prev_avail));
+  // Manually passing match_prev_avail defines that --str1 is a valid position
+  assert(std::regex_match(str1_scnd, std::regex("a"),
+                     std::regex_constants::match_not_bol |
+                         std::regex_constants::match_prev_avail));
+
+  //Assert that match_prev_avail disables match_not_bow and this matches
+  assert(std::regex_search(str1, std::regex("\\ba")));
+  assert(std::regex_match(str1 + 1, str1 + 2, std::regex("\\ba\\b"),
+                     std::regex_constants::match_not_bow |
+                         std::regex_constants::match_prev_avail));
+  assert(std::regex_search(str1_scnd, std::regex("\\ba"),
+                      std::regex_constants::match_not_bow |
+                          std::regex_constants::match_prev_avail));
+
+  //Assert that match_prev_avail disables both match_not_bow and match_not_bol
+  assert(std::regex_match(str1 + 1, str1 + 2, std::regex("^a"),
+                     std::regex_constants::match_not_bol |
+                         std::regex_constants::match_not_bow |
+                         std::regex_constants::match_prev_avail));
+  assert(std::regex_match(str1_scnd, std::regex("\\ba"),
+                     std::regex_constants::match_not_bol |
+                         std::regex_constants::match_not_bow |
+                         std::regex_constants::match_prev_avail));
+
+  // pr 42199
+  std::string S = " cd";
+  std::string::iterator Start = S.begin() + 1;
+  std::string::iterator End = S.end();
+  assert(std::regex_search(Start, End, std::regex("^cd")));
+
+  assert(!std::regex_search(Start, End, std::regex("^cd"),
+            std::regex_constants::match_not_bol));
+  assert(!std::regex_search(Start, End, std::regex(".*\\bcd\\b"),
+            std::regex_constants::match_not_bow));
+  assert(!std::regex_search(Start, End, std::regex("^cd"),
+            std::regex_constants::match_not_bol |
+            std::regex_constants::match_not_bow));
+  assert(!std::regex_search(Start, End, std::regex(".*\\bcd\\b"),
+            std::regex_constants::match_not_bol |
+            std::regex_constants::match_not_bow));
+
+  assert(std::regex_search(Start, End, std::regex("^cd"),
+            std::regex_constants::match_prev_avail));
+
+  assert(std::regex_search(Start, End, std::regex("^cd"),
+            std::regex_constants::match_not_bol |
+            std::regex_constants::match_prev_avail));
+  assert(std::regex_search(Start, End, std::regex("^cd"),
+            std::regex_constants::match_not_bow |
+            std::regex_constants::match_prev_avail));
+  assert(std::regex_match(Start, End, std::regex("\\bcd\\b"),
+            std::regex_constants::match_not_bol |
+            std::regex_constants::match_not_bow |
+            std::regex_constants::match_prev_avail));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.const/re.synopt/syntax_option_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.const/re.synopt/syntax_option_type.pass.cpp
new file mode 100644
index 0000000..012ad4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.const/re.synopt/syntax_option_type.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// namespace regex_constants
+// {
+//
+// emum syntax_option_type  // bitmask type
+// {
+//     icase      = unspecified,
+//     nosubs     = unspecified,
+//     optimize   = unspecified,
+//     collate    = unspecified,
+//     ECMAScript = unspecified,
+//     basic      = unspecified,
+//     extended   = unspecified,
+//     awk        = unspecified,
+//     grep       = unspecified,
+//     egrep      = unspecified,
+//     multiline  = unspecified
+// };
+//
+// }
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::regex_constants::icase != 0);
+    assert(std::regex_constants::nosubs != 0);
+    assert(std::regex_constants::optimize != 0);
+    assert(std::regex_constants::collate != 0);
+#if !defined _LIBCPP_VERSION || defined _LIBCPP_ABI_REGEX_CONSTANTS_NONZERO
+    // https://llvm.org/PR35967
+    assert(std::regex_constants::ECMAScript != 0);
+#else
+    assert(std::regex_constants::ECMAScript == 0);
+#endif
+    assert(std::regex_constants::basic != 0);
+    assert(std::regex_constants::extended != 0);
+    assert(std::regex_constants::awk != 0);
+    assert(std::regex_constants::grep != 0);
+    assert(std::regex_constants::egrep != 0);
+    assert(std::regex_constants::multiline != 0);
+
+    assert((std::regex_constants::icase & std::regex_constants::nosubs) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::optimize) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::collate) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::ECMAScript) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::basic) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::extended) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::icase & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::nosubs & std::regex_constants::optimize) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::collate) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::ECMAScript) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::basic) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::extended) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::nosubs & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::optimize & std::regex_constants::collate) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::ECMAScript) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::basic) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::extended) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::optimize & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::collate & std::regex_constants::ECMAScript) == 0);
+    assert((std::regex_constants::collate & std::regex_constants::basic) == 0);
+    assert((std::regex_constants::collate & std::regex_constants::extended) == 0);
+    assert((std::regex_constants::collate & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::collate & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::collate & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::collate & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::ECMAScript & std::regex_constants::basic) == 0);
+    assert((std::regex_constants::ECMAScript & std::regex_constants::extended) == 0);
+    assert((std::regex_constants::ECMAScript & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::ECMAScript & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::ECMAScript & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::ECMAScript & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::basic & std::regex_constants::extended) == 0);
+    assert((std::regex_constants::basic & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::basic & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::basic & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::basic & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::extended & std::regex_constants::awk) == 0);
+    assert((std::regex_constants::extended & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::extended & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::extended & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::awk & std::regex_constants::grep) == 0);
+    assert((std::regex_constants::awk & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::awk & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::grep & std::regex_constants::egrep) == 0);
+    assert((std::regex_constants::grep & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::egrep & std::regex_constants::multiline) == 0);
+
+    assert((std::regex_constants::icase | std::regex_constants::nosubs) != 0);
+    assert((std::regex_constants::icase ^ std::regex_constants::nosubs) != 0);
+
+    std::regex_constants::syntax_option_type e1 = std::regex_constants::icase;
+    std::regex_constants::syntax_option_type e2 = std::regex_constants::nosubs;
+    e1 = ~e1;
+    e1 = e1 & e2;
+    e1 = e1 | e2;
+    e1 = e1 ^ e2;
+    e1 &= e2;
+    e1 |= e2;
+    e1 ^= e2;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.collating.element/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.collating.element/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.collating.element/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.finite.state.machine/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.finite.state.machine/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.finite.state.machine/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.format.specifier/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.format.specifier/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.format.specifier/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.matched/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.matched/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.matched/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.primary.equivalence.class/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.primary.equivalence.class/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.primary.equivalence.class/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.regular.expression/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.regular.expression/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.regular.expression/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.subexpression/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.subexpression/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.def/defns.regex.subexpression/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.grammar/excessive_brace_count.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.grammar/excessive_brace_count.pass.cpp
new file mode 100644
index 0000000..6ed2645
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.grammar/excessive_brace_count.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: c++03
+
+// the "n" in `a{n}` should be within the numeric limits.
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**) {
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::basic, std::regex::grep}) {
+    try {
+      TEST_IGNORE_NODISCARD std::regex("a\\{100000000000000000\\}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    try {
+      TEST_IGNORE_NODISCARD std::regex("a{100000000000000000}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.grammar/excessive_brace_min_max.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.grammar/excessive_brace_min_max.pass.cpp
new file mode 100644
index 0000000..d8f0502
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.grammar/excessive_brace_min_max.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: c++03
+
+// the "n" and "m" in `a{n,m}` should be within the numeric limits.
+// requirement "m >= n" should be checked.
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**) {
+  // test that `n <= m`
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::basic}) {
+    try {
+      TEST_IGNORE_NODISCARD std::regex("a\\{3,2\\}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+      LIBCPP_ASSERT(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    try {
+      TEST_IGNORE_NODISCARD std::regex("a{3,2}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+      LIBCPP_ASSERT(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+
+  // test that both bounds are within the limit
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::basic}) {
+    try {
+      TEST_IGNORE_NODISCARD std::regex("a\\{100000000000000000000,10000000000000000000\\}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+      LIBCPP_ASSERT(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+        std::regex::awk}) {
+    try {
+      TEST_IGNORE_NODISCARD std::regex("a{100000000000000000000,10000000000000000000}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+      LIBCPP_ASSERT(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..6f2da09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// regex_iterator
+
+#include <regex>
+
+#include <iterator>
+
+static_assert(std::forward_iterator<std::cregex_iterator>);
+static_assert(!std::bidirectional_iterator<std::cregex_iterator>);
+static_assert(!std::indirectly_writable<std::cregex_iterator, char>);
+static_assert(std::sentinel_for<std::cregex_iterator, std::cregex_iterator>);
+static_assert(!std::sized_sentinel_for<std::cregex_iterator, std::cregex_iterator>);
+static_assert(!std::indirectly_movable<std::cregex_iterator, std::cregex_iterator>);
+static_assert(!std::indirectly_movable_storable<std::cregex_iterator, std::cregex_iterator>);
+static_assert(!std::indirectly_copyable<std::cregex_iterator, std::cregex_iterator>);
+static_assert(!std::indirectly_copyable_storable<std::cregex_iterator, std::cregex_iterator>);
+static_assert(!std::indirectly_swappable<std::cregex_iterator, std::cregex_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/cnstr.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/cnstr.compile.fail.cpp
new file mode 100644
index 0000000..34d1ce6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/cnstr.compile.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type&& re,
+//                      int submatch = 0,
+//                      regex_constants::match_flag_type m =
+//                        regex_constants::match_default) = delete;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::cregex_iterator i(
+            std::begin(phone_book), std::end(phone_book),
+            std::regex("\\d{3}-\\d{4}"));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/cnstr.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/cnstr.pass.cpp
new file mode 100644
index 0000000..a6d1059
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/cnstr.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// regex_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                const regex_type& re,
+//                regex_constants::match_flag_type m = regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::cregex_iterator i(std::begin(phone_book), std::end(phone_book), phone_numbers);
+        assert(i != std::cregex_iterator());
+        assert(i->size() == 1);
+        assert(i->position() == 0);
+        assert(i->str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_iterator());
+        assert(i->size() == 1);
+        assert(i->position() == 10);
+        assert(i->str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_iterator());
+        assert(i->size() == 1);
+        assert(i->position() == 20);
+        assert(i->str() == "555-3456");
+        ++i;
+        assert(i == std::cregex_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/default.pass.cpp
new file mode 100644
index 0000000..52b3309
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.cnstr/default.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// regex_iterator();
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    typedef std::regex_iterator<const CharT*> I;
+    I i1;
+    assert(i1 == I());
+}
+
+int main(int, char**)
+{
+    test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.comp/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.comp/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..f7f71bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.comp/tested_elsewhere.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// bool operator==(const regex_iterator& right) const;
+// bool operator!=(const regex_iterator& right) const;
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.deref/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.deref/deref.pass.cpp
new file mode 100644
index 0000000..11b12b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.deref/deref.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// const value_type& operator*() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::cregex_iterator i(std::begin(phone_book), std::end(phone_book), phone_numbers);
+        assert(i != std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 0);
+        assert((*i).str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 10);
+        assert((*i).str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 20);
+        assert((*i).str() == "555-3456");
+        ++i;
+        assert(i == std::cregex_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.incr/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.incr/post.pass.cpp
new file mode 100644
index 0000000..9332158
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/re.regiter.incr/post.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// regex_iterator operator++(int);
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::cregex_iterator i(std::begin(phone_book), std::end(phone_book), phone_numbers);
+        std::cregex_iterator i2 = i;
+        assert(i != std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 0);
+        assert((*i).str() == "555-1234");
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+        i++;
+        assert(i != std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 10);
+        assert((*i).str() == "555-2345");
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+        i++;
+        assert(i != std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 20);
+        assert((*i).str() == "555-3456");
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+        i++;
+        assert(i == std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "555-1234, 555-2345, 555-3456";
+        std::cregex_iterator i(std::begin(phone_book), std::end(phone_book), phone_numbers);
+        std::cregex_iterator i2 = i;
+        assert(i != std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 0);
+        assert((*i).str() == "555-1234");
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 10);
+        assert((*i).str() == "555-2345");
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i).size() == 1);
+        assert((*i).position() == 20);
+        assert((*i).str() == "555-3456");
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+        ++i;
+        assert(i == std::cregex_iterator());
+        assert(i2!= std::cregex_iterator());
+        assert((*i2).size() == 1);
+        assert((*i2).position() == 0);
+        assert((*i2).str() == "555-1234");
+    }
+    { // https://llvm.org/PR33681
+        std::regex rex(".*");
+        const char foo[] = "foo";
+    //  The -1 is because we don't want the implicit null from the array.
+        std::cregex_iterator i(std::begin(foo), std::end(foo) - 1, rex);
+        std::cregex_iterator e;
+        assert(i != e);
+        assert((*i).size() == 1);
+        assert((*i).str() == "foo");
+
+        ++i;
+        assert(i != e);
+        assert((*i).size() == 1);
+        assert((*i).str() == "");
+
+        ++i;
+        assert(i == e);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/types.pass.cpp
new file mode 100644
index 0000000..7d30b0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.regiter/types.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator,
+//           class charT = typename iterator_traits< BidirectionalIterator>::value_type,
+//           class traits = regex_traits<charT>>
+// class regex_iterator
+// {
+// public:
+//     typedef basic_regex<charT, traits>           regex_type;
+//     typedef match_results<BidirectionalIterator> value_type;
+//     typedef ptrdiff_t                            difference_type;
+//     typedef const value_type*                    pointer;
+//     typedef const value_type&                    reference;
+//     typedef forward_iterator_tag                 iterator_category;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    typedef std::regex_iterator<const CharT*> I;
+    static_assert((std::is_same<typename I::regex_type, std::basic_regex<CharT> >::value), "");
+    static_assert((std::is_same<typename I::value_type, std::match_results<const CharT*> >::value), "");
+    static_assert((std::is_same<typename I::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename I::pointer, const std::match_results<const CharT*>*>::value), "");
+    static_assert((std::is_same<typename I::reference, const std::match_results<const CharT*>&>::value), "");
+    static_assert((std::is_same<typename I::iterator_category, std::forward_iterator_tag>::value), "");
+}
+
+int main(int, char**)
+{
+    test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..3972265
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// regex_token_iterator
+
+#include <regex>
+
+#include <iterator>
+
+static_assert(std::forward_iterator<std::cregex_token_iterator>);
+static_assert(!std::bidirectional_iterator<std::cregex_token_iterator>);
+static_assert(!std::indirectly_writable<std::cregex_token_iterator, char>);
+static_assert(std::sentinel_for<std::cregex_token_iterator, std::cregex_token_iterator>);
+static_assert(!std::sized_sentinel_for<std::cregex_token_iterator, std::cregex_token_iterator>);
+static_assert(!std::indirectly_movable<std::cregex_token_iterator, std::cregex_token_iterator>);
+static_assert(!std::indirectly_movable_storable<std::cregex_token_iterator, std::cregex_token_iterator>);
+static_assert(!std::indirectly_copyable<std::cregex_token_iterator, std::cregex_token_iterator>);
+static_assert(!std::indirectly_copyable_storable<std::cregex_token_iterator, std::cregex_token_iterator>);
+static_assert(!std::indirectly_swappable<std::cregex_token_iterator, std::cregex_token_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/array.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/array.compile.fail.cpp
new file mode 100644
index 0000000..a03fd52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/array.compile.fail.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// template <size_t N>
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type&& re,
+//                      const int (&submatches)[N],
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <vector>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        const int indices[] = {-1, 0, 1};
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     std::regex("\\d{3}-\\d{4}"), indices);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/array.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/array.pass.cpp
new file mode 100644
index 0000000..ed1d5ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/array.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// template <size_t N>
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type& re,
+//                      const int (&submatches)[N],
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        const int indices[] = {-1, 0, 1};
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, indices);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/default.pass.cpp
new file mode 100644
index 0000000..4a028fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/default.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator();
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    typedef std::regex_token_iterator<const CharT*> I;
+    I i1;
+    assert(i1 == I());
+}
+
+int main(int, char**)
+{
+    test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>();
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/init.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/init.compile.fail.cpp
new file mode 100644
index 0000000..b6913e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/init.compile.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type&& re,
+//                      initializer_list<int> submatches,
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                      std::regex("\\d{3}-\\d{4}"), {-1, 0, 1});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/init.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/init.pass.cpp
new file mode 100644
index 0000000..a508781
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/init.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type& re,
+//                      initializer_list<int> submatches,
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, {-1, 0, 1});
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/int.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/int.compile.fail.cpp
new file mode 100644
index 0000000..3c39d49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/int.compile.fail.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type&& re, int submatch = 0,
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     std::regex("\\d{3}-\\d{4}"), -1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/int.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/int.pass.cpp
new file mode 100644
index 0000000..2abed8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/int.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type& re, int submatch = 0,
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, -1);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-3456");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, 1);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "3456");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/vector.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/vector.compile.fail.cpp
new file mode 100644
index 0000000..9b07df9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/vector.compile.fail.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_iterator<BidirectionalIterator, charT, traits>
+
+// template <std::size_t N>
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type&& re,
+//                      const std::vector<int>& submatches,
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+#error
+#endif
+
+int main(int, char**)
+{
+    {
+         std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::vector<int> v;
+        v.push_back(-1);
+        v.push_back(-1);
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     std::regex("\\d{3}-\\d{4}"), v);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/vector.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/vector.pass.cpp
new file mode 100644
index 0000000..b2ef0b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.cnstr/vector.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator(BidirectionalIterator a, BidirectionalIterator b,
+//                      const regex_type& re,
+//                      const std::vector<int>& submatches,
+//                      regex_constants::match_flag_type m =
+//                                              regex_constants::match_default);
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::vector<int> v;
+        v.push_back(-1);
+        v.push_back(-1);
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, v);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::vector<int> v;
+        v.push_back(-1);
+        v.push_back(0);
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, v);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::vector<int> v;
+        v.push_back(-1);
+        v.push_back(0);
+        v.push_back(1);
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, v);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "3456");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.comp/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.comp/equal.pass.cpp
new file mode 100644
index 0000000..1c60201
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.comp/equal.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// bool operator==(const regex_token_iterator& right) const;
+// bool operator!=(const regex_token_iterator& right) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, -1);
+        assert(i != std::cregex_token_iterator());
+        assert(!(i == std::cregex_token_iterator()));
+        std::cregex_token_iterator i2 = i;
+        assert(i2 == i);
+        assert(!(i2 != i));
+        ++i;
+        assert(!(i2 == i));
+        assert(i2 != i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.deref/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.deref/deref.pass.cpp
new file mode 100644
index 0000000..1785df2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.deref/deref.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// const value_type& operator*() const;
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, -1);
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "start ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == ", ");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == " end");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers);
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "555-1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "555-2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "555-3456");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, 1);
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "1234");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "2345");
+        ++i;
+        assert(i != std::cregex_token_iterator());
+        assert((*i).str() == "3456");
+        ++i;
+        assert(i == std::cregex_token_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.incr/post.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.incr/post.pass.cpp
new file mode 100644
index 0000000..8d44f3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/re.tokiter.incr/post.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class regex_token_iterator<BidirectionalIterator, charT, traits>
+
+// regex_token_iterator& operator++(int);
+
+#include <regex>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, -1);
+        std::cregex_token_iterator i2 = i;
+        std::cregex_token_iterator i3;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        assert(i2->str() == "start ");
+        i3 = i++;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        assert(i2->str() == "start ");
+        assert(i3->str() == "start ");
+        i3 = i++;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        assert(i2->str() == "start ");
+        assert(i3->str() == ", ");
+        i3 = i++;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        assert(i2->str() == "start ");
+        assert(i3->str() == ", ");
+        i3 = i++;
+        assert(i  == std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i2->str() == "start ");
+        assert(i3->str() == " end");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, -1);
+        std::cregex_token_iterator i2 = i;
+        std::cregex_token_iterator i3;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i->str() == "start ");
+        assert(i2->str() == "start ");
+        i3 = i;
+        ++i;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        assert(i2->str() == "start ");
+        assert(i3->str() == "start ");
+        i3 = i;
+        ++i;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i->str() == ", ");
+        assert(i2->str() == "start ");
+        assert(i3->str() == ", ");
+        i3 = i;
+        ++i;
+        assert(i  != std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i->str() == " end");
+        assert(i2->str() == "start ");
+        assert(i3->str() == ", ");
+        i3 = i;
+        ++i;
+        assert(i  == std::cregex_token_iterator());
+        assert(i2 != std::cregex_token_iterator());
+        assert(i3 != std::cregex_token_iterator());
+        assert(i2->str() == "start ");
+        assert(i3->str() == " end");
+    }
+    {
+        std::regex phone_numbers("\\d{3}-\\d{4}");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-1234");
+        i++;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-2345");
+        i++;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "555-3456");
+        i++;
+        assert(i == std::cregex_token_iterator());
+    }
+    {
+        std::regex phone_numbers("\\d{3}-(\\d{4})");
+        const char phone_book[] = "start 555-1234, 555-2345, 555-3456 end";
+        std::cregex_token_iterator i(std::begin(phone_book), std::end(phone_book)-1,
+                                     phone_numbers, 1);
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "1234");
+        i++;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "2345");
+        i++;
+        assert(i != std::cregex_token_iterator());
+        assert(i->str() == "3456");
+        i++;
+        assert(i == std::cregex_token_iterator());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/types.pass.cpp
new file mode 100644
index 0000000..73ad58f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.iter/re.tokiter/types.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator,
+//           class charT = typename iterator_traits< BidirectionalIterator>::value_type,
+//           class traits = regex_traits<charT>>
+// class regex_token_iterator
+// {
+// public:
+//     typedef basic_regex<charT, traits>       regex_type;
+//     typedef sub_match<BidirectionalIterator> value_type;
+//     typedef ptrdiff_t                        difference_type;
+//     typedef const value_type*                pointer;
+//     typedef const value_type&                reference;
+//     typedef forward_iterator_tag             iterator_category;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    typedef std::regex_token_iterator<const CharT*> I;
+    static_assert((std::is_same<typename I::regex_type, std::basic_regex<CharT> >::value), "");
+    static_assert((std::is_same<typename I::value_type, std::sub_match<const CharT*> >::value), "");
+    static_assert((std::is_same<typename I::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename I::pointer, const std::sub_match<const CharT*>*>::value), "");
+    static_assert((std::is_same<typename I::reference, const std::sub_match<const CharT*>&>::value), "");
+    static_assert((std::is_same<typename I::iterator_category, std::forward_iterator_tag>::value), "");
+}
+
+int main(int, char**)
+{
+    test<char>();
+    test<wchar_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign.il.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign.il.pass.cpp
new file mode 100644
index 0000000..f26f02b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign.il.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex&
+//    assign(initializer_list<charT> il,
+//           flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r2;
+    r2.assign({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'});
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+    r2.assign({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex::extended);
+    assert(r2.flags() == std::regex::extended);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign.pass.cpp
new file mode 100644
index 0000000..c580ab9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex& assign(const basic_regex& that);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r1("(a([bc]))");
+    std::regex r2;
+    r2.assign(r1);
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+    assert(std::regex_search("ab", r2));
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    bool caught = false;
+    try { r2.assign("(def", std::regex::extended); }
+    catch(std::regex_error &) { caught = true; }
+    assert(caught);
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+    assert(std::regex_search("ab", r2));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_iter_iter_flag.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_iter_iter_flag.pass.cpp
new file mode 100644
index 0000000..d228be0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_iter_iter_flag.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class InputIterator>
+//    basic_regex&
+//    assign(InputIterator first, InputIterator last,
+//           flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    typedef cpp17_input_iterator<std::string::const_iterator> I;
+    typedef forward_iterator<std::string::const_iterator> F;
+    std::string s4("(a([bc]))");
+    std::regex r2;
+
+    r2.assign(I(s4.begin()), I(s4.end()));
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+    r2.assign(I(s4.begin()), I(s4.end()), std::regex::extended);
+    assert(r2.flags() == std::regex::extended);
+    assert(r2.mark_count() == 2);
+
+    r2.assign(F(s4.begin()), F(s4.end()));
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+    r2.assign(F(s4.begin()), F(s4.end()), std::regex::extended);
+    assert(r2.flags() == std::regex::extended);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_ptr_flag.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_ptr_flag.pass.cpp
new file mode 100644
index 0000000..9445bba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_ptr_flag.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex& assign(const charT* ptr, flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r2;
+    r2.assign("(a([bc]))");
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+    r2.assign("(a([bc]))", std::regex::extended);
+    assert(r2.flags() == std::regex::extended);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_ptr_size_flag.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_ptr_size_flag.pass.cpp
new file mode 100644
index 0000000..e74a42b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_ptr_size_flag.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex& assign(const charT* ptr, size_t len, flag_type f);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r0;
+    r0.assign("(a([bc]))", 9);
+    assert(r0.flags() == std::regex::ECMAScript);
+    assert(r0.mark_count() == 2);
+
+    std::regex r1;
+    r1.assign("(a([bc]))", 9, std::regex::ECMAScript);
+    assert(r1.flags() == std::regex::ECMAScript);
+    assert(r1.mark_count() == 2);
+
+    std::regex r2;
+    r2.assign("(a([bc]))", 9, std::regex::extended);
+    assert(r2.flags() == std::regex::extended);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_string_flag.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_string_flag.pass.cpp
new file mode 100644
index 0000000..4b1bcef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/assign_string_flag.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class string_traits, class A>
+//   basic_regex& assign(const basic_string<charT, string_traits, A>& s,
+//                       flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r2;
+    r2.assign(std::string("(a([bc]))"));
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+    r2.assign(std::string("(a([bc]))"), std::regex::extended);
+    assert(r2.flags() == std::regex::extended);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/copy.pass.cpp
new file mode 100644
index 0000000..1abb721
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/copy.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex& operator=(const basic_regex& e);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r1("(a([bc]))");
+    std::regex r2;
+    r2 = r1;
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/il.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/il.pass.cpp
new file mode 100644
index 0000000..c2a0de3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/il.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex& operator=(initializer_list<charT> il);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r2;
+    r2 = {'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'};
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/ptr.pass.cpp
new file mode 100644
index 0000000..3791f81
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/ptr.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex& operator=(const charT* ptr);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r2;
+    r2 = "(a([bc]))";
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/string.pass.cpp
new file mode 100644
index 0000000..e33819a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.assign/string.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex& operator=(const basic_string<charT, ST, SA>& p);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r2;
+    r2 = std::string("(a([bc]))");
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.const/constants.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.const/constants.pass.cpp
new file mode 100644
index 0000000..5d8d48d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.const/constants.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>>
+// class basic_regex
+// {
+// public:
+//     // constants:
+//     static constexpr regex_constants::syntax_option_type icase = regex_constants::icase;
+//     static constexpr regex_constants::syntax_option_type nosubs = regex_constants::nosubs;
+//     static constexpr regex_constants::syntax_option_type optimize = regex_constants::optimize;
+//     static constexpr regex_constants::syntax_option_type collate = regex_constants::collate;
+//     static constexpr regex_constants::syntax_option_type ECMAScript = regex_constants::ECMAScript;
+//     static constexpr regex_constants::syntax_option_type basic = regex_constants::basic;
+//     static constexpr regex_constants::syntax_option_type extended = regex_constants::extended;
+//     static constexpr regex_constants::syntax_option_type awk = regex_constants::awk;
+//     static constexpr regex_constants::syntax_option_type grep = regex_constants::grep;
+//     static constexpr regex_constants::syntax_option_type egrep = regex_constants::egrep;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void where(const T &) {}
+
+template <class CharT>
+void
+test()
+{
+    typedef std::basic_regex<CharT> BR;
+    static_assert((BR::icase == std::regex_constants::icase), "");
+    static_assert((BR::nosubs == std::regex_constants::nosubs), "");
+    static_assert((BR::optimize == std::regex_constants::optimize), "");
+    static_assert((BR::collate == std::regex_constants::collate), "");
+    static_assert((BR::ECMAScript == std::regex_constants::ECMAScript), "");
+    static_assert((BR::basic == std::regex_constants::basic), "");
+    static_assert((BR::extended == std::regex_constants::extended), "");
+    static_assert((BR::awk == std::regex_constants::awk), "");
+    static_assert((BR::grep == std::regex_constants::grep), "");
+    static_assert((BR::egrep == std::regex_constants::egrep), "");
+    where(BR::icase);
+    where(BR::nosubs);
+    where(BR::optimize);
+    where(BR::collate);
+    where(BR::ECMAScript);
+    where(BR::basic);
+    where(BR::extended);
+    where(BR::awk);
+    where(BR::grep);
+    where(BR::egrep);
+}
+
+int main(int, char**)
+{
+    test<char>();
+    test<wchar_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/awk_oct.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/awk_oct.pass.cpp
new file mode 100644
index 0000000..2e7eed3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/awk_oct.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::regex_constants::awk;
+
+    assert(std::regex_match("\4", std::regex("\\4", awk)));
+    assert(std::regex_match("\41", std::regex("\\41", awk)));
+    assert(std::regex_match("\141", std::regex("\\141", awk)));
+    assert(std::regex_match("\141" "1", std::regex("\\1411", awk)));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_backref.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_backref.pass.cpp
new file mode 100644
index 0000000..09b9e89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_backref.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+static bool error_badbackref_thrown(const char *pat, std::regex::flag_type f)
+{
+    bool result = false;
+    try {
+        std::regex re(pat, f);
+    } catch (const std::regex_error &ex) {
+        result = (ex.code() == std::regex_constants::error_backref);
+    }
+    return result;
+}
+
+int main(int, char**)
+{
+//  no references
+    assert(error_badbackref_thrown("\\1abc", std::regex_constants::ECMAScript));
+    assert(error_badbackref_thrown("\\1abd", std::regex::basic));
+    assert(error_badbackref_thrown("\\1abd", std::regex::extended));
+    assert(error_badbackref_thrown("\\1abd", std::regex::awk) == false);
+    assert(error_badbackref_thrown("\\1abd", std::regex::grep));
+    assert(error_badbackref_thrown("\\1abd", std::regex::egrep));
+
+//  only one reference
+    assert(error_badbackref_thrown("ab(c)\\2def", std::regex_constants::ECMAScript));
+    assert(error_badbackref_thrown("ab\\(c\\)\\2def", std::regex_constants::basic));
+    assert(error_badbackref_thrown("ab(c)\\2def", std::regex_constants::extended));
+    assert(error_badbackref_thrown("ab\\(c\\)\\2def", std::regex_constants::awk) == false);
+    assert(error_badbackref_thrown("ab(c)\\2def", std::regex_constants::awk) == false);
+    assert(error_badbackref_thrown("ab\\(c\\)\\2def", std::regex_constants::grep));
+    assert(error_badbackref_thrown("ab(c)\\2def", std::regex_constants::egrep));
+
+
+    assert(error_badbackref_thrown("\\800000000000000000000000000000", std::regex_constants::ECMAScript)); // overflows
+
+//  this should NOT throw, because we only should look at the '1'
+//  See https://llvm.org/PR31387
+    {
+    const char *pat1 = "a(b)c\\1234";
+    std::regex re(pat1, pat1 + 7); // extra chars after the end.
+    }
+
+//  reference before group
+    assert(error_badbackref_thrown("\\1(abc)", std::regex_constants::ECMAScript));
+    assert(error_badbackref_thrown("\\1\\(abd\\)", std::regex::basic));
+    assert(error_badbackref_thrown("\\1(abd)", std::regex::extended));
+    assert(error_badbackref_thrown("\\1(abd)", std::regex::awk) == false);
+    assert(error_badbackref_thrown("\\1\\(abd\\)", std::regex::awk) == false);
+    assert(error_badbackref_thrown("\\1\\(abd\\)", std::regex::grep));
+    assert(error_badbackref_thrown("\\1(abd)", std::regex::egrep));
+
+//  reference limit
+    assert(error_badbackref_thrown("(cat)\\10", std::regex::ECMAScript));
+    assert(error_badbackref_thrown("\\(cat\\)\\10", std::regex::basic) == false);
+    assert(error_badbackref_thrown("(cat)\\10", std::regex::extended) == false);
+    assert(error_badbackref_thrown("\\(cat\\)\\10", std::regex::awk) == false);
+    assert(error_badbackref_thrown("(cat)\\10", std::regex::awk) == false);
+    assert(error_badbackref_thrown("\\(cat\\)\\10", std::regex::grep) == false);
+    assert(error_badbackref_thrown("(cat)\\10", std::regex::egrep) == false);
+
+//  https://llvm.org/PR34297
+    assert(error_badbackref_thrown("(cat)\\1", std::regex::basic));
+    assert(error_badbackref_thrown("\\(cat\\)\\1", std::regex::basic) == false);
+    assert(error_badbackref_thrown("(cat)\\1", std::regex::extended) == false);
+    assert(error_badbackref_thrown("\\(cat\\)\\1", std::regex::extended));
+    assert(error_badbackref_thrown("(cat)\\1", std::regex::awk) == false);
+    assert(error_badbackref_thrown("\\(cat\\)\\1", std::regex::awk) == false);
+    assert(error_badbackref_thrown("(cat)\\1", std::regex::grep));
+    assert(error_badbackref_thrown("\\(cat\\)\\1", std::regex::grep) == false);
+    assert(error_badbackref_thrown("(cat)\\1", std::regex::egrep) == false);
+    assert(error_badbackref_thrown("\\(cat\\)\\1", std::regex::egrep));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_ctype.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_ctype.pass.cpp
new file mode 100644
index 0000000..31f6e9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_ctype.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+static bool error_ctype_thrown(const char *pat)
+{
+    bool result = false;
+    try {
+        std::regex re(pat);
+    } catch (const std::regex_error &ex) {
+        result = (ex.code() == std::regex_constants::error_ctype);
+    }
+    return result;
+}
+
+int main(int, char**)
+{
+    assert(error_ctype_thrown("[[::]]"));
+    assert(error_ctype_thrown("[[:error:]]"));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_escape.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_escape.pass.cpp
new file mode 100644
index 0000000..abb854e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_escape.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+static bool error_escape_thrown(const char *pat)
+{
+    bool result = false;
+    try {
+        std::regex re(pat);
+    } catch (const std::regex_error &ex) {
+        result = (ex.code() == std::regex_constants::error_escape);
+    }
+    return result;
+}
+
+int main(int, char**)
+{
+    assert(error_escape_thrown("[\\a]"));
+    assert(error_escape_thrown("\\a"));
+    assert(error_escape_thrown("\\"));
+
+    assert(error_escape_thrown("[\\e]"));
+    assert(error_escape_thrown("\\e"));
+
+    assert(error_escape_thrown("[\\c:]"));
+    assert(error_escape_thrown("\\c:"));
+    assert(error_escape_thrown("\\c"));
+    assert(!error_escape_thrown("[\\cA]"));
+    assert(!error_escape_thrown("\\cA"));
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_range.pass.cpp
new file mode 100644
index 0000000..023bc0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_range.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+static bool error_range_thrown(const char *pat)
+{
+    bool result = false;
+    try {
+        std::regex re(pat);
+    } catch (const std::regex_error &ex) {
+        result = (ex.code() == std::regex_constants::error_range);
+    }
+    return result;
+}
+
+int main(int, char**)
+{
+    assert(error_range_thrown("([\\w-a])"));
+    assert(error_range_thrown("([a-\\w])"));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_repeat.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_repeat.pass.cpp
new file mode 100644
index 0000000..b600ef7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/bad_repeat.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+static bool error_badrepeat_thrown(const char *pat)
+{
+    bool result = false;
+    try {
+        std::regex re(pat);
+    } catch (const std::regex_error &ex) {
+        result = (ex.code() == std::regex_constants::error_badrepeat);
+    }
+    return result;
+}
+
+int main(int, char**)
+{
+    assert(error_badrepeat_thrown("?a"));
+    assert(error_badrepeat_thrown("*a"));
+    assert(error_badrepeat_thrown("+a"));
+    assert(error_badrepeat_thrown("{a"));
+
+    assert(error_badrepeat_thrown("?(a+)"));
+    assert(error_badrepeat_thrown("*(a+)"));
+    assert(error_badrepeat_thrown("+(a+)"));
+    assert(error_badrepeat_thrown("{(a+)"));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/copy.pass.cpp
new file mode 100644
index 0000000..f3db8fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/copy.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex(const basic_regex& e);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r1("(a([bc]))");
+    std::regex r2 = r1;
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/deduct.fail.cpp
new file mode 100644
index 0000000..593dd9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/deduct.fail.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class ForwardIterator>
+// basic_regex(ForwardIterator, ForwardIterator,
+//             regex_constants::syntax_option_type = regex_constants::ECMAScript)
+// -> basic_regex<typename iterator_traits<ForwardIterator>::value_type>;
+
+#include <regex>
+#include <string>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+
+int main(int, char**)
+{
+    // Test the explicit deduction guides
+    {
+    // basic_regex(ForwardIterator, ForwardIterator)
+    // <int> is not an iterator
+    std::basic_regex re(23, 34);   // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'basic_regex'}}
+    }
+
+    {
+    // basic_regex(ForwardIterator, ForwardIterator, flag_type)
+    // <double> is not an iterator
+    std::basic_regex re(23.0, 34.0, std::regex_constants::basic);   // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'basic_regex'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/deduct.pass.cpp
new file mode 100644
index 0000000..db4fba0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/deduct.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class ForwardIterator>
+// basic_regex(ForwardIterator, ForwardIterator,
+//             regex_constants::syntax_option_type = regex_constants::ECMAScript)
+// -> basic_regex<typename iterator_traits<ForwardIterator>::value_type>;
+
+#include <regex>
+#include <string>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+using namespace std::literals;
+
+struct A {};
+
+int main(int, char**)
+{
+
+//  Test the explicit deduction guides
+    {
+//  basic_regex(ForwardIterator, ForwardIterator)
+    std::string s1("\\(a\\)");
+    std::basic_regex re(s1.begin(), s1.end());
+
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
+    assert(re.flags() == std::regex_constants::ECMAScript);
+    assert(re.mark_count() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    std::wstring s1(L"\\(a\\)");
+    std::basic_regex re(s1.begin(), s1.end(), std::regex_constants::basic);
+
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
+    assert(re.flags() == std::regex_constants::basic);
+    assert(re.mark_count() == 1);
+    }
+#endif
+
+//  Test the implicit deduction guides
+    {
+//  basic_regex(string);
+    std::basic_regex re("(a([bc]))"s);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
+    assert(re.flags() == std::regex_constants::ECMAScript);
+    assert(re.mark_count() == 2);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+//  basic_regex(string, flag_type);
+    std::basic_regex re(L"(a([bc]))"s, std::regex_constants::awk);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
+    assert(re.flags() == std::regex_constants::awk);
+    assert(re.mark_count() == 2);
+    }
+#endif
+
+    {
+//  basic_regex(const charT*);
+    std::basic_regex re("ABCDE");
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
+    assert(re.flags() == std::regex_constants::ECMAScript);
+    assert(re.mark_count() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+//  basic_regex(const charT*, flag_type);
+    std::basic_regex re(L"ABCDE", std::regex_constants::grep);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
+    assert(re.flags() == std::regex_constants::grep);
+    assert(re.mark_count() == 0);
+    }
+#endif
+
+    {
+//  basic_regex(const charT*, size_t);
+    std::basic_regex re("ABCDEDEF", 7);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
+    assert(re.flags() == std::regex_constants::ECMAScript);
+    assert(re.mark_count() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+//  basic_regex(const charT*, size_t, flag_type);
+    std::basic_regex re(L"ABCDEDEF", 8, std::regex_constants::awk);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
+    assert(re.flags() == std::regex_constants::awk);
+    assert(re.mark_count() == 0);
+    }
+#endif
+
+    {
+//  basic_regex(const basic_regex &);
+    std::basic_regex<char> source;
+    std::basic_regex re(source);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
+    assert(re.flags() == source.flags());
+    assert(re.mark_count() == source.mark_count());
+    }
+
+    {
+//  template<class ST, class SA>
+//         explicit basic_regex(const basic_string<charT, ST, SA>& p,
+//                              flag_type f = regex_constants::ECMAScript);
+    }
+
+    {
+//  basic_regex(initializer_list);
+    std::basic_regex re({'A', 'B', 'F', 'E', 'D'});
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
+    assert(re.flags() == std::regex_constants::ECMAScript);
+    assert(re.mark_count() == 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+//  basic_regex(initializer_list, flag_type);
+    std::basic_regex re({L'A', L'B', L'F', L'E', L'D'}, std::regex_constants::grep);
+    static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
+    assert(re.flags() == std::regex_constants::grep);
+    assert(re.mark_count() == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/default.pass.cpp
new file mode 100644
index 0000000..f0abdbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/default.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex();
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    std::basic_regex<CharT> r;
+    assert(r.flags() == std::regex_constants::ECMAScript);
+    assert(r.mark_count() == 0);
+}
+
+int main(int, char**)
+{
+    test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/il_flg.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/il_flg.pass.cpp
new file mode 100644
index 0000000..d57c0f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/il_flg.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex(initializer_list<charT> il,
+//             flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+
+void
+test(std::initializer_list<char> il, std::regex_constants::syntax_option_type f, unsigned mc)
+{
+    std::basic_regex<char> r(il, f);
+    assert(r.flags() == f);
+    assert(r.mark_count() == mc);
+}
+
+
+int main(int, char**)
+{
+    std::string s1("\\(a\\)");
+    std::string s2("\\(a[bc]\\)");
+    std::string s3("\\(a\\([bc]\\)\\)");
+    std::string s4("(a([bc]))");
+
+    test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::basic, 1);
+    test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::basic, 1);
+    test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::basic, 2);
+    test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::basic, 0);
+
+    test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::extended, 0);
+    test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::extended, 0);
+    test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::extended, 0);
+    test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::extended, 2);
+
+    test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::ECMAScript, 0);
+    test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::ECMAScript, 0);
+    test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::ECMAScript, 0);
+    test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::ECMAScript, 2);
+
+    test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::awk, 0);
+    test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::awk, 0);
+    test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::awk, 0);
+    test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::awk, 2);
+
+    test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::grep, 1);
+    test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::grep, 1);
+    test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::grep, 2);
+    test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::grep, 0);
+
+    test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::egrep, 0);
+    test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::egrep, 0);
+    test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::egrep, 0);
+    test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::egrep, 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/iter_iter.pass.cpp
new file mode 100644
index 0000000..3dcf29f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/iter_iter.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ForwardIterator>
+//    basic_regex(ForwardIterator first, ForwardIterator last);
+
+#include <regex>
+#include <cassert>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last, unsigned mc)
+{
+    std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last);
+    assert(r.flags() == std::regex_constants::ECMAScript);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    typedef forward_iterator<std::string::const_iterator> F;
+    std::string s1("\\(a\\)");
+    std::string s2("\\(a[bc]\\)");
+    std::string s3("\\(a\\([bc]\\)\\)");
+    std::string s4("(a([bc]))");
+
+    test(F(s1.begin()), F(s1.end()), 0);
+    test(F(s2.begin()), F(s2.end()), 0);
+    test(F(s3.begin()), F(s3.end()), 0);
+    test(F(s4.begin()), F(s4.end()), 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/iter_iter_flg.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/iter_iter_flg.pass.cpp
new file mode 100644
index 0000000..22423c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/iter_iter_flg.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ForwardIterator>
+//    basic_regex(ForwardIterator first, ForwardIterator last,
+//                flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template <class Iter>
+void
+test(Iter first, Iter last, std::regex_constants::syntax_option_type f, unsigned mc)
+{
+    std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last, f);
+    assert(r.flags() == f);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    typedef forward_iterator<std::string::const_iterator> F;
+    std::string s1("\\(a\\)");
+    std::string s2("\\(a[bc]\\)");
+    std::string s3("\\(a\\([bc]\\)\\)");
+    std::string s4("(a([bc]))");
+
+    test(F(s1.begin()), F(s1.end()), std::regex_constants::basic, 1);
+    test(F(s2.begin()), F(s2.end()), std::regex_constants::basic, 1);
+    test(F(s3.begin()), F(s3.end()), std::regex_constants::basic, 2);
+    test(F(s4.begin()), F(s4.end()), std::regex_constants::basic, 0);
+
+    test(F(s1.begin()), F(s1.end()), std::regex_constants::extended, 0);
+    test(F(s2.begin()), F(s2.end()), std::regex_constants::extended, 0);
+    test(F(s3.begin()), F(s3.end()), std::regex_constants::extended, 0);
+    test(F(s4.begin()), F(s4.end()), std::regex_constants::extended, 2);
+
+    test(F(s1.begin()), F(s1.end()), std::regex_constants::ECMAScript, 0);
+    test(F(s2.begin()), F(s2.end()), std::regex_constants::ECMAScript, 0);
+    test(F(s3.begin()), F(s3.end()), std::regex_constants::ECMAScript, 0);
+    test(F(s4.begin()), F(s4.end()), std::regex_constants::ECMAScript, 2);
+
+    test(F(s1.begin()), F(s1.end()), std::regex_constants::awk, 0);
+    test(F(s2.begin()), F(s2.end()), std::regex_constants::awk, 0);
+    test(F(s3.begin()), F(s3.end()), std::regex_constants::awk, 0);
+    test(F(s4.begin()), F(s4.end()), std::regex_constants::awk, 2);
+
+    test(F(s1.begin()), F(s1.end()), std::regex_constants::grep, 1);
+    test(F(s2.begin()), F(s2.end()), std::regex_constants::grep, 1);
+    test(F(s3.begin()), F(s3.end()), std::regex_constants::grep, 2);
+    test(F(s4.begin()), F(s4.end()), std::regex_constants::grep, 0);
+
+    test(F(s1.begin()), F(s1.end()), std::regex_constants::egrep, 0);
+    test(F(s2.begin()), F(s2.end()), std::regex_constants::egrep, 0);
+    test(F(s3.begin()), F(s3.end()), std::regex_constants::egrep, 0);
+    test(F(s4.begin()), F(s4.end()), std::regex_constants::egrep, 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr.pass.cpp
new file mode 100644
index 0000000..b71d9eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex(const charT* p);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test(const CharT* p, unsigned mc)
+{
+    std::basic_regex<CharT> r(p);
+    assert(r.flags() == std::regex_constants::ECMAScript);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    test("\\(a\\)", 0);
+    test("\\(a[bc]\\)", 0);
+    test("\\(a\\([bc]\\)\\)", 0);
+    test("(a([bc]))", 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_flg.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_flg.pass.cpp
new file mode 100644
index 0000000..e918b03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_flg.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex(const charT* p, flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test(const CharT* p, std::regex_constants::syntax_option_type f, unsigned mc)
+{
+    std::basic_regex<CharT> r(p, f);
+    assert(r.flags() == f);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    test("\\(a\\)", std::regex_constants::basic, 1);
+    test("\\(a[bc]\\)", std::regex_constants::basic, 1);
+    test("\\(a\\([bc]\\)\\)", std::regex_constants::basic, 2);
+    test("(a([bc]))", std::regex_constants::basic, 0);
+
+    test("\\(a\\)", std::regex_constants::extended, 0);
+    test("\\(a[bc]\\)", std::regex_constants::extended, 0);
+    test("\\(a\\([bc]\\)\\)", std::regex_constants::extended, 0);
+    test("(a([bc]))", std::regex_constants::extended, 2);
+
+    test("\\(a\\)", std::regex_constants::ECMAScript, 0);
+    test("\\(a[bc]\\)", std::regex_constants::ECMAScript, 0);
+    test("\\(a\\([bc]\\)\\)", std::regex_constants::ECMAScript, 0);
+    test("(a([bc]))", std::regex_constants::ECMAScript, 2);
+
+    test("\\(a\\)", std::regex_constants::awk, 0);
+    test("\\(a[bc]\\)", std::regex_constants::awk, 0);
+    test("\\(a\\([bc]\\)\\)", std::regex_constants::awk, 0);
+    test("(a([bc]))", std::regex_constants::awk, 2);
+
+    test("\\(a\\)", std::regex_constants::grep, 1);
+    test("\\(a[bc]\\)", std::regex_constants::grep, 1);
+    test("\\(a\\([bc]\\)\\)", std::regex_constants::grep, 2);
+    test("(a([bc]))", std::regex_constants::grep, 0);
+
+    test("\\(a\\)", std::regex_constants::egrep, 0);
+    test("\\(a[bc]\\)", std::regex_constants::egrep, 0);
+    test("\\(a\\([bc]\\)\\)", std::regex_constants::egrep, 0);
+    test("(a([bc]))", std::regex_constants::egrep, 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size.pass.cpp
new file mode 100644
index 0000000..1d99069
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex(const charT* p, size_t len);
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+void
+test(const CharT* p, std::size_t len, unsigned mc)
+{
+    std::basic_regex<CharT> r(p, len);
+    assert(r.flags() == std::regex_constants::ECMAScript);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    test("\\(a\\)", 5, 0);
+    test("\\(a[bc]\\)", 9, 0);
+    test("\\(a\\([bc]\\)\\)", 13, 0);
+    test("(a([bc]))", 9, 2);
+
+    test("(\0)(b)(c)(d)", 12, 4);
+    test("(\0)(b)(c)(d)", 9, 3);
+    test("(\0)(b)(c)(d)", 3, 1);
+    test("(\0)(b)(c)(d)", 0, 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size_flg.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size_flg.pass.cpp
new file mode 100644
index 0000000..07f3947
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/ptr_size_flg.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// basic_regex(const charT* p, size_t len, flag_type f);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test(const CharT* p, std::size_t len, std::regex_constants::syntax_option_type f,
+     unsigned mc)
+{
+    std::basic_regex<CharT> r(p, len, f);
+    assert(r.flags() == f);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    test("\\(a\\)", 5, std::regex_constants::basic, 1);
+    test("\\(a[bc]\\)", 9, std::regex_constants::basic, 1);
+    test("\\(a\\([bc]\\)\\)", 13, std::regex_constants::basic, 2);
+    test("(a([bc]))", 9, std::regex_constants::basic, 0);
+
+    test("\\(a\\)", 5, std::regex_constants::extended, 0);
+    test("\\(a[bc]\\)", 9, std::regex_constants::extended, 0);
+    test("\\(a\\([bc]\\)\\)", 13, std::regex_constants::extended, 0);
+    test("(a([bc]))", 9, std::regex_constants::extended, 2);
+
+    test("\\(a\\)", 5, std::regex_constants::ECMAScript, 0);
+    test("\\(a[bc]\\)", 9, std::regex_constants::ECMAScript, 0);
+    test("\\(a\\([bc]\\)\\)", 13, std::regex_constants::ECMAScript, 0);
+    test("(a([bc]))", 9, std::regex_constants::ECMAScript, 2);
+
+    test("\\(a\\)", 5, std::regex_constants::awk, 0);
+    test("\\(a[bc]\\)", 9, std::regex_constants::awk, 0);
+    test("\\(a\\([bc]\\)\\)", 13, std::regex_constants::awk, 0);
+    test("(a([bc]))", 9, std::regex_constants::awk, 2);
+
+    test("\\(a\\)", 5, std::regex_constants::grep, 1);
+    test("\\(a[bc]\\)", 9, std::regex_constants::grep, 1);
+    test("\\(a\\([bc]\\)\\)", 13, std::regex_constants::grep, 2);
+    test("(a([bc]))", 9, std::regex_constants::grep, 0);
+
+    test("\\(a\\)", 5, std::regex_constants::egrep, 0);
+    test("\\(a[bc]\\)", 9, std::regex_constants::egrep, 0);
+    test("\\(a\\([bc]\\)\\)", 13, std::regex_constants::egrep, 0);
+    test("(a([bc]))", 9, std::regex_constants::egrep, 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/string.pass.cpp
new file mode 100644
index 0000000..ecd0451
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/string.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class String>
+void
+test(const String& p, unsigned mc)
+{
+    std::basic_regex<typename String::value_type> r(p);
+    assert(r.flags() == std::regex_constants::ECMAScript);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    test(std::string("\\(a\\)"), 0);
+    test(std::string("\\(a[bc]\\)"), 0);
+    test(std::string("\\(a\\([bc]\\)\\)"), 0);
+    test(std::string("(a([bc]))"), 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/string_flg.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/string_flg.pass.cpp
new file mode 100644
index 0000000..b6bd8c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.construct/string_flg.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class ST, class SA>
+//    basic_regex(const basic_string<charT, ST, SA>& s,
+//                flag_type f = regex_constants::ECMAScript);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class String>
+void
+test(const String& p, std::regex_constants::syntax_option_type f, unsigned mc)
+{
+    std::basic_regex<typename String::value_type> r(p, f);
+    assert(r.flags() == f);
+    assert(r.mark_count() == mc);
+}
+
+int main(int, char**)
+{
+    test(std::string("\\(a\\)"), std::regex_constants::basic, 1);
+    test(std::string("\\(a[bc]\\)"), std::regex_constants::basic, 1);
+    test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::basic, 2);
+    test(std::string("(a([bc]))"), std::regex_constants::basic, 0);
+
+    test(std::string("\\(a\\)"), std::regex_constants::extended, 0);
+    test(std::string("\\(a[bc]\\)"), std::regex_constants::extended, 0);
+    test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::extended, 0);
+    test(std::string("(a([bc]))"), std::regex_constants::extended, 2);
+
+    test(std::string("\\(a\\)"), std::regex_constants::ECMAScript, 0);
+    test(std::string("\\(a[bc]\\)"), std::regex_constants::ECMAScript, 0);
+    test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::ECMAScript, 0);
+    test(std::string("(a([bc]))"), std::regex_constants::ECMAScript, 2);
+
+    test(std::string("\\(a\\)"), std::regex_constants::awk, 0);
+    test(std::string("\\(a[bc]\\)"), std::regex_constants::awk, 0);
+    test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::awk, 0);
+    test(std::string("(a([bc]))"), std::regex_constants::awk, 2);
+
+    test(std::string("\\(a\\)"), std::regex_constants::grep, 1);
+    test(std::string("\\(a[bc]\\)"), std::regex_constants::grep, 1);
+    test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::grep, 2);
+    test(std::string("(a([bc]))"), std::regex_constants::grep, 0);
+
+    test(std::string("\\(a\\)"), std::regex_constants::egrep, 0);
+    test(std::string("\\(a[bc]\\)"), std::regex_constants::egrep, 0);
+    test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::egrep, 0);
+    test(std::string("(a([bc]))"), std::regex_constants::egrep, 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.locale/imbue.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.locale/imbue.pass.cpp
new file mode 100644
index 0000000..27647f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.locale/imbue.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// locale_type imbue(locale_type loc);
+
+#include <regex>
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    std::regex r;
+    std::locale loc = r.imbue(std::locale(LOCALE_en_US_UTF_8));
+    assert(loc.name() == "C");
+    assert(r.getloc().name() == LOCALE_en_US_UTF_8);
+    loc = r.imbue(std::locale("C"));
+    assert(loc.name() == LOCALE_en_US_UTF_8);
+    assert(r.getloc().name() == "C");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.nonmemb/re.regex.nmswap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.nonmemb/re.regex.nmswap/swap.pass.cpp
new file mode 100644
index 0000000..bb3291b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.nonmemb/re.regex.nmswap/swap.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// template <class charT, class traits>
+//   void swap(basic_regex<charT, traits>& lhs, basic_regex<charT, traits>& rhs);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r1("(a([bc]))");
+    std::regex r2;
+    swap(r2, r1);
+    assert(r1.flags() == std::regex::ECMAScript);
+    assert(r1.mark_count() == 0);
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.operations/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.operations/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.operations/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.swap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.swap/swap.pass.cpp
new file mode 100644
index 0000000..5092d57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/re.regex.swap/swap.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>> class basic_regex;
+
+// void swap(basic_regex& e);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::regex r1("(a([bc]))");
+    std::regex r2;
+    r2.swap(r1);
+    assert(r1.flags() == std::regex::ECMAScript);
+    assert(r1.mark_count() == 0);
+    assert(r2.flags() == std::regex::ECMAScript);
+    assert(r2.mark_count() == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.regex/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.regex/types.pass.cpp
new file mode 100644
index 0000000..a13ad18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.regex/types.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT, class traits = regex_traits<charT>>
+// class basic_regex
+// {
+// public:
+//     // types:
+//     typedef charT                               value_type;
+//     typedef traits                              traits_type;
+//     typedef typename traits::string_type        string_type;
+//     typedef regex_constants::syntax_option_type flag_type;
+//     typedef typename traits::locale_type        locale_type;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::basic_regex<char>::value_type, char>::value), "");
+    static_assert((std::is_same<std::basic_regex<char>::traits_type, std::regex_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_regex<char>::string_type, std::basic_string<char> >::value), "");
+    static_assert((std::is_same<std::basic_regex<char>::flag_type,
+                                std::regex_constants::syntax_option_type>::value), "");
+    static_assert((std::is_same<std::basic_regex<char>::locale_type, std::locale>::value), "");
+
+    static_assert((std::is_same<std::basic_regex<wchar_t>::value_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::basic_regex<wchar_t>::traits_type, std::regex_traits<wchar_t> >::value), "");
+    static_assert((std::is_same<std::basic_regex<wchar_t>::string_type, std::basic_string<wchar_t> >::value), "");
+    static_assert((std::is_same<std::basic_regex<wchar_t>::flag_type,
+                                std::regex_constants::syntax_option_type>::value), "");
+    static_assert((std::is_same<std::basic_regex<wchar_t>::locale_type, std::locale>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.req/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.req/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.req/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..9f012d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// match_results
+
+#include <regex>
+
+#include <concepts>
+#include <ranges>
+
+
+
+static_assert(std::same_as<std::ranges::iterator_t<std::cmatch>, std::cmatch::iterator>);
+static_assert(std::ranges::common_range<std::cmatch>);
+static_assert(std::ranges::random_access_range<std::cmatch>);
+static_assert(std::ranges::contiguous_range<std::cmatch>);
+static_assert(!std::ranges::view<std::cmatch>);
+static_assert(std::ranges::sized_range<std::cmatch>);
+static_assert(!std::ranges::borrowed_range<std::cmatch>);
+static_assert(std::ranges::viewable_range<std::cmatch>);
+
+static_assert(std::same_as<std::ranges::iterator_t<std::cmatch const>, std::cmatch::const_iterator>);
+static_assert(std::ranges::common_range<std::cmatch const>);
+static_assert(std::ranges::random_access_range<std::cmatch const>);
+static_assert(std::ranges::contiguous_range<std::cmatch const>);
+static_assert(!std::ranges::view<std::cmatch const>);
+static_assert(std::ranges::sized_range<std::cmatch const>);
+static_assert(!std::ranges::borrowed_range<std::cmatch const>);
+static_assert(!std::ranges::viewable_range<std::cmatch const>);
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/begin_end.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/begin_end.pass.cpp
new file mode 100644
index 0000000..48fff58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/begin_end.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// const_iterator begin() const;
+// const_iterator end() const;
+
+#include <regex>
+#include <cassert>
+#include <cstddef>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+    std::match_results<const char*>::const_iterator i = m.begin();
+    std::match_results<const char*>::const_iterator e = m.end();
+
+    assert(static_cast<std::size_t>(e - i) == m.size());
+    for (int j = 0; i != e; ++i, ++j)
+        assert(*i == m[j]);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/cbegin_cend.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/cbegin_cend.pass.cpp
new file mode 100644
index 0000000..bd9009a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/cbegin_cend.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// const_iterator cbegin() const;
+// const_iterator cend() const;
+
+#include <regex>
+#include <cassert>
+#include <cstddef>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+    std::match_results<const char*>::const_iterator i = m.cbegin();
+    std::match_results<const char*>::const_iterator e = m.cend();
+
+    assert(static_cast<std::size_t>(e - i) == m.size());
+    for (int j = 0; i != e; ++i, ++j)
+        assert(*i == m[j]);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/index.pass.cpp
new file mode 100644
index 0000000..a5c25a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/index.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// const_reference operator[](size_type n) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test(std::regex_constants::syntax_option_type syntax)
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi|(z)", syntax)));
+
+    assert(m.size() == 4);
+
+    assert(m[0].first == s+2);
+    assert(m[0].second == s+9);
+    assert(m[0].matched == true);
+
+    assert(m[1].first == s+4);
+    assert(m[1].second == s+7);
+    assert(m[1].matched == true);
+
+    assert(m[2].first == s+4);
+    assert(m[2].second == s+5);
+    assert(m[2].matched == true);
+
+    assert(m[3].first == s+11);
+    assert(m[3].second == s+11);
+    assert(m[3].matched == false);
+
+    assert(m[4].first == s+11);
+    assert(m[4].second == s+11);
+    assert(m[4].matched == false);
+}
+
+int main(int, char**)
+{
+    test(std::regex_constants::ECMAScript);
+    test(std::regex_constants::extended);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/length.pass.cpp
new file mode 100644
index 0000000..266ba69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/length.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// difference_type length(size_type sub = 0) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+    assert(m.length() == m[0].length());
+    assert(m.length(0) == m[0].length());
+    assert(m.length(1) == m[1].length());
+    assert(m.length(2) == m[2].length());
+    assert(m.length(3) == m[3].length());
+    assert(m.length(4) == m[4].length());
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/position.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/position.pass.cpp
new file mode 100644
index 0000000..34256de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/position.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// difference_type position(size_type sub = 0) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+    assert(m.position() == std::distance(s, m[0].first));
+    assert(m.position(0) == std::distance(s, m[0].first));
+    assert(m.position(1) == std::distance(s, m[1].first));
+    assert(m.position(2) == std::distance(s, m[2].first));
+    assert(m.position(3) == std::distance(s, m[3].first));
+    assert(m.position(4) == std::distance(s, m[4].first));
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/prefix.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/prefix.pass.cpp
new file mode 100644
index 0000000..b2cd48d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/prefix.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// const_reference prefix() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+    assert(m.prefix().first == s);
+    assert(m.prefix().second == s+2);
+    assert(m.prefix().matched == true);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/str.pass.cpp
new file mode 100644
index 0000000..ae4387d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/str.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// string_type str(size_type sub = 0) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+    assert(m.str() == std::string(m[0]));
+    assert(m.str(0) == std::string(m[0]));
+    assert(m.str(1) == std::string(m[1]));
+    assert(m.str(2) == std::string(m[2]));
+    assert(m.str(3) == std::string(m[3]));
+    assert(m.str(4) == std::string(m[4]));
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/suffix.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/suffix.pass.cpp
new file mode 100644
index 0000000..c9d3855
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.acc/suffix.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// const_reference suffix() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+    assert(m.suffix().first == s+9);
+    assert(m.suffix().second == s+11);
+    assert(m.suffix().matched == true);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.all/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.all/get_allocator.pass.cpp
new file mode 100644
index 0000000..84ef708
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.all/get_allocator.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// allocator_type get_allocator() const;
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class CharT, class Allocator>
+void
+test(const Allocator& a)
+{
+    std::match_results<const CharT*, Allocator> m(a);
+    assert(m.size() == 0);
+    assert(!m.ready());
+    assert(m.get_allocator() == a);
+}
+
+int main(int, char**)
+{
+    test<char>(test_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/allocator.pass.cpp
new file mode 100644
index 0000000..5d152c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/allocator.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// match_results(const Allocator& a = Allocator());
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class CharT, class Allocator>
+void
+test(const Allocator& a)
+{
+    std::match_results<const CharT*, Allocator> m(a);
+    assert(m.size() == 0);
+    assert(!m.ready());
+    assert(m.get_allocator() == a);
+}
+
+int main(int, char**)
+{
+    test<char>(test_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/copy.pass.cpp
new file mode 100644
index 0000000..be9585e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/copy.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// match_results(const match_results& m);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class CharT, class Allocator>
+void
+test(const Allocator& a)
+{
+    typedef std::match_results<const CharT*, Allocator> SM;
+    SM m0(a);
+    SM m1(m0);
+
+    assert(m1.size()          == m0.size());
+    assert(m1.ready()         == m0.ready());
+    assert(m1.get_allocator() == m0.get_allocator());
+}
+
+int main(int, char**)
+{
+    test<char>   (std::allocator<std::sub_match<const char *> >());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(std::allocator<std::sub_match<const wchar_t *> >());
+#endif
+
+    test<char>   (test_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/copy_assign.pass.cpp
new file mode 100644
index 0000000..33dbeb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/copy_assign.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// match_results& operator=(const match_results& m);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class CharT, class Allocator>
+void
+test(const Allocator& a)
+{
+    typedef std::match_results<const CharT*, Allocator> SM;
+    SM m0(a);
+    SM m1;
+
+    m1 = m0;
+    assert(m1.size()          == m0.size());
+    assert(m1.ready()         == m0.ready());
+    if (std::allocator_traits<Allocator>::propagate_on_container_copy_assignment::value)
+        assert(m1.get_allocator() == m0.get_allocator());
+    else
+        assert(m1.get_allocator() == Allocator());
+}
+
+int main(int, char**)
+{
+    test<char>   (std::allocator<std::sub_match<const char *> >());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(std::allocator<std::sub_match<const wchar_t *> >());
+#endif
+
+    // test_allocator has POCCA -> false
+    test<char>   (test_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+    // other_allocator has POCCA -> true
+    test<char>   (other_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(other_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/default.pass.cpp
new file mode 100644
index 0000000..bcb2462
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/default.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// explicit match_results(const Allocator& a = Allocator()); // before C++20
+// match_results() : match_results(Allocator()) {}           // C++20
+// explicit match_results(const Allocator& a);               // C++20
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "test_convertible.h"
+
+template <typename T>
+void test_implicit() {
+  static_assert(test_convertible<T>(), "");
+  static_assert(!test_convertible<T, typename T::allocator_type>(), "");
+}
+#endif
+
+template <class CharT>
+void
+test()
+{
+    typedef std::match_results<const CharT*> M;
+    typedef std::allocator<std::sub_match<const CharT*> > Alloc;
+    M m;
+    assert(m.size() == 0);
+    assert(!m.ready());
+    assert(m.get_allocator() == Alloc());
+
+#if TEST_STD_VER >= 11
+    test_implicit<M>();
+#endif
+}
+
+int main(int, char**)
+{
+    test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/move.pass.cpp
new file mode 100644
index 0000000..0806ede
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/move.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// match_results(match_results&& m) noexcept;
+//
+//  Additionally, the stored Allocator value is move constructed from m.get_allocator().
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class CharT, class Allocator>
+void
+test(const Allocator& a)
+{
+    typedef std::match_results<const CharT*, Allocator> SM;
+    ASSERT_NOEXCEPT(SM(std::declval<SM&&>()));
+
+    SM m0(a);
+    assert(m0.get_allocator() == a);
+
+    SM m1(std::move(m0));
+    assert(m1.size() == 0);
+    assert(!m1.ready());
+    assert(m1.get_allocator() == a);
+}
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    test<char>   (std::allocator<std::sub_match<const char *> >());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(std::allocator<std::sub_match<const wchar_t *> >());
+#endif
+
+    test<char>   (test_allocator<std::sub_match<const char*> >(3, &alloc_stats));
+    assert(alloc_stats.moved == 1);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3, &alloc_stats));
+    assert(alloc_stats.moved == 2);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/move_assign.pass.cpp
new file mode 100644
index 0000000..a8c269d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.const/move_assign.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// match_results& operator=(match_results&& m);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class CharT, class Allocator>
+void
+test(const Allocator& a)
+{
+    typedef std::match_results<const CharT*, Allocator> SM;
+    SM m0(a);
+    SM m1;
+
+    m1 = std::move(m0);
+    assert(m1.size()          == 0);
+    assert(!m1.ready());
+    if (std::allocator_traits<Allocator>::propagate_on_container_move_assignment::value)
+        assert(m1.get_allocator() == a);
+    else
+        assert(m1.get_allocator() == Allocator());
+}
+
+int main(int, char**)
+{
+    test<char>   (std::allocator<std::sub_match<const char *> >());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(std::allocator<std::sub_match<const wchar_t *> >());
+#endif
+
+    // test_allocator has POCMA -> false
+    test<char>   (test_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(test_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+    // other_allocator has POCMA -> true
+    test<char>   (other_allocator<std::sub_match<const char*> >(3));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>(other_allocator<std::sub_match<const wchar_t*> >(3));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form1.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form1.pass.cpp
new file mode 100644
index 0000000..3ea0362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form1.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// template <class OutputIter>
+//   OutputIter
+//   format(OutputIter out, const char_type* fmt_first, const char_type* fmt_last,
+//          regex_constants::match_flag_type flags = regex_constants::format_default) const;
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+int main(int, char**)
+{
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        char out[100] = {0};
+        const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt));
+        assert(base(r) == out + 58);
+        assert(std::string(out) == "prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi",
+                                                  std::regex_constants::nosubs)));
+
+        char out[100] = {0};
+        const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt));
+        assert(base(r) == out + 54);
+        assert(std::string(out) == "prefix: ab, match: cdefghi, suffix: jk, m[1]: , m[2]: ");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cdefghi")));
+
+        char out[100] = {0};
+        const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt));
+        assert(base(r) == out + 54);
+        assert(std::string(out) == "prefix: ab, match: cdefghi, suffix: jk, m[1]: , m[2]: ");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        char out[100] = {0};
+        const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt),
+                    std::regex_constants::format_sed);
+        assert(base(r) == out + 59);
+        assert(std::string(out) == "prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        char out[100] = {0};
+        const char fmt[] = "match: &, m[1]: \\1, m[2]: \\2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt),
+                    std::regex_constants::format_sed);
+        assert(base(r) == out + 34);
+        assert(std::string(out) == "match: cdefghi, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi",
+                                                  std::regex_constants::nosubs)));
+
+        char out[100] = {0};
+        const char fmt[] = "match: &, m[1]: \\1, m[2]: \\2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt),
+                    std::regex_constants::format_sed);
+        assert(base(r) == out + 30);
+        assert(std::string(out) == "match: cdefghi, m[1]: , m[2]: ");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cdefghi")));
+
+        char out[100] = {0};
+        const char fmt[] = "match: &, m[1]: \\1, m[2]: \\2";
+        auto r = m.format(cpp17_output_iterator<char*>(out),
+                    fmt, fmt + std::char_traits<char>::length(fmt),
+                    std::regex_constants::format_sed);
+        assert(base(r) == out + 30);
+        assert(std::string(out) == "match: cdefghi, m[1]: , m[2]: ");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wchar_t out[100] = {0};
+        const wchar_t fmt[] = L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        auto r = m.format(cpp17_output_iterator<wchar_t*>(out),
+                    fmt, fmt + std::char_traits<wchar_t>::length(fmt));
+        assert(base(r) == out + 58);
+        assert(std::wstring(out) == L"prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wchar_t out[100] = {0};
+        const wchar_t fmt[] = L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        auto r = m.format(cpp17_output_iterator<wchar_t*>(out),
+                    fmt, fmt + std::char_traits<wchar_t>::length(fmt),
+                    std::regex_constants::format_sed);
+        assert(base(r) == out + 59);
+        assert(std::wstring(out) == L"prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wchar_t out[100] = {0};
+        const wchar_t fmt[] = L"match: &, m[1]: \\1, m[2]: \\2";
+        auto r = m.format(cpp17_output_iterator<wchar_t*>(out),
+                    fmt, fmt + std::char_traits<wchar_t>::length(fmt),
+                    std::regex_constants::format_sed);
+        assert(base(r) == out + 34);
+        assert(std::wstring(out) == L"match: cdefghi, m[1]: efg, m[2]: e");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form2.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form2.pass.cpp
new file mode 100644
index 0000000..3c9f04a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form2.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// template <class OutputIter, class ST, class SA>
+//   OutputIter
+//   format(OutputIter out, const basic_string<char_type, ST, SA>& fmt,
+//          regex_constants::match_flag_type flags = regex_constants::format_default) const;
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > nstr;
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        char out[100] = {0};
+        nstr fmt("prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        auto r = m.format(cpp17_output_iterator<char*>(out), fmt);
+        assert(base(r) == out + 58);
+        assert(std::string(out) == "prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        char out[100] = {0};
+        nstr fmt("prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        auto r = m.format(cpp17_output_iterator<char*>(out), fmt, std::regex_constants::format_sed);
+        assert(base(r) == out + 59);
+        assert(std::string(out) == "prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        char out[100] = {0};
+        nstr fmt("match: &, m[1]: \\1, m[2]: \\2");
+        auto r = m.format(cpp17_output_iterator<char*>(out), fmt, std::regex_constants::format_sed);
+        assert(base(r) == out + 34);
+        assert(std::string(out) == "match: cdefghi, m[1]: efg, m[2]: e");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, test_allocator<wchar_t> > wstr;
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wchar_t out[100] = {0};
+        wstr fmt(L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        auto r = m.format(cpp17_output_iterator<wchar_t*>(out), fmt);
+        assert(base(r) == out + 58);
+        assert(std::wstring(out) == L"prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wchar_t out[100] = {0};
+        wstr fmt(L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        auto r = m.format(cpp17_output_iterator<wchar_t*>(out), fmt, std::regex_constants::format_sed);
+        assert(base(r) == out + 59);
+        assert(std::wstring(out) == L"prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wchar_t out[100] = {0};
+        wstr fmt(L"match: &, m[1]: \\1, m[2]: \\2");
+        auto r = m.format(cpp17_output_iterator<wchar_t*>(out), fmt, std::regex_constants::format_sed);
+        assert(base(r) == out + 34);
+        assert(std::wstring(out) == L"match: cdefghi, m[1]: efg, m[2]: e");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form3.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form3.pass.cpp
new file mode 100644
index 0000000..384cf17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form3.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// template <class ST, class SA>
+//   basic_string<char_type, ST, SA>
+//   format(const basic_string<char_type, ST, SA>& fmt,
+//          regex_constants::match_flag_type flags = regex_constants::format_default) const;
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > nstr;
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        nstr fmt("prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        nstr out = m.format(fmt);
+        assert(out == "prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        nstr fmt("prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        nstr out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == "prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        nstr fmt("match: &, m[1]: \\1, m[2]: \\2");
+        nstr out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == "match: cdefghi, m[1]: efg, m[2]: e");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, test_allocator<wchar_t> > wstr;
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wstr fmt(L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        wstr out = m.format(fmt);
+        assert(out == L"prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wstr fmt(L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2");
+        wstr out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == L"prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        wstr fmt(L"match: &, m[1]: \\1, m[2]: \\2");
+        wstr out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == L"match: cdefghi, m[1]: efg, m[2]: e");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form4.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form4.pass.cpp
new file mode 100644
index 0000000..7bd25d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.form/form4.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// string_type
+//   format(const char_type* fmt,
+//          regex_constants::match_flag_type flags = regex_constants::format_default) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        std::string out = m.format(fmt);
+        assert(out == "prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        const char fmt[] = "prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        std::string out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == "prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const char*> m;
+        const char s[] = "abcdefghijk";
+        assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+
+        const char fmt[] = "match: &, m[1]: \\1, m[2]: \\2";
+        std::string out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == "match: cdefghi, m[1]: efg, m[2]: e");
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        const wchar_t fmt[] = L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        std::wstring out = m.format(fmt);
+        assert(out == L"prefix: ab, match: cdefghi, suffix: jk, m[1]: efg, m[2]: e");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        const wchar_t fmt[] = L"prefix: $`, match: $&, suffix: $', m[1]: $1, m[2]: $2";
+        std::wstring out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == L"prefix: $`, match: $cdefghi, suffix: $', m[1]: $1, m[2]: $2");
+    }
+    {
+        std::match_results<const wchar_t*> m;
+        const wchar_t s[] = L"abcdefghijk";
+        assert(std::regex_search(s, m, std::wregex(L"cd((e)fg)hi")));
+
+        const wchar_t fmt[] = L"match: &, m[1]: \\1, m[2]: \\2";
+        std::wstring out = m.format(fmt, std::regex_constants::format_sed);
+        assert(out == L"match: cdefghi, m[1]: efg, m[2]: e");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.nonmember/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.nonmember/equal.pass.cpp
new file mode 100644
index 0000000..3723ad4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.nonmember/equal.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// template <class BidirectionalIterator, class Allocator>
+//    bool
+//    operator==(const match_results<BidirectionalIterator, Allocator>& m1,
+//               const match_results<BidirectionalIterator, Allocator>& m2);
+
+// template <class BidirectionalIterator, class Allocator>
+//    bool
+//    operator!=(const match_results<BidirectionalIterator, Allocator>& m1,
+//               const match_results<BidirectionalIterator, Allocator>& m2);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m1;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m1, std::regex("cd((e)fg)hi")));
+    std::match_results<const char*> m2;
+
+    assert(m1 == m1);
+    assert(m1 != m2);
+
+    m2 = m1;
+
+    assert(m1 == m2);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/empty.pass.cpp
new file mode 100644
index 0000000..7eaed34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/empty.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// size_type size() const;
+// bool empty() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    std::match_results<const CharT*> m;
+    assert(m.empty());
+    assert(m.size() == 0);
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m, std::regex("cd((e)fg)hi")));
+    assert(!m.empty());
+    assert(m.size() == 3);
+}
+
+int main(int, char**)
+{
+    test<char>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/empty.verify.cpp
new file mode 100644
index 0000000..738ed88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/empty.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+// bool empty() const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <regex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::match_results<const char*> c;
+    c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/max_size.pass.cpp
new file mode 100644
index 0000000..184933d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.size/max_size.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// size_type max_size() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    std::match_results<const CharT*> m;
+    assert(m.max_size() > 0);
+}
+
+int main(int, char**)
+{
+    test<char>();
+    test<wchar_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.state/ready.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.state/ready.pass.cpp
new file mode 100644
index 0000000..476a66f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.state/ready.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// bool ready() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test1()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(m.ready() == false);
+    std::regex_search(s, m, std::regex("cd((e)fg)hi"));
+    assert(m.ready() == true);
+}
+
+void
+test2()
+{
+    std::match_results<const char*> m;
+    const char s[] = "abcdefghijk";
+    assert(m.ready() == false);
+    std::regex_search(s, m, std::regex("z"));
+    assert(m.ready() == true);
+}
+
+int main(int, char**)
+{
+    test1();
+    test2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.swap/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.swap/member_swap.pass.cpp
new file mode 100644
index 0000000..967fe11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.swap/member_swap.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// void swap(match_results& that);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m1;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m1, std::regex("cd((e)fg)hi")));
+    std::match_results<const char*> m2;
+
+    std::match_results<const char*> m1_save = m1;
+    std::match_results<const char*> m2_save = m2;
+
+    m1.swap(m2);
+
+    assert(m1 == m2_save);
+    assert(m2 == m1_save);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.swap/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.swap/non_member_swap.pass.cpp
new file mode 100644
index 0000000..59ba59f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/re.results.swap/non_member_swap.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// class match_results<BidirectionalIterator, Allocator>
+
+// template <class BidirectionalIterator, class Allocator>
+//    void swap(match_results<BidirectionalIterator, Allocator>& m1,
+//              match_results<BidirectionalIterator, Allocator>& m2);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+void
+test()
+{
+    std::match_results<const char*> m1;
+    const char s[] = "abcdefghijk";
+    assert(std::regex_search(s, m1, std::regex("cd((e)fg)hi")));
+    std::match_results<const char*> m2;
+
+    std::match_results<const char*> m1_save = m1;
+    std::match_results<const char*> m2_save = m2;
+
+    swap(m1, m2);
+
+    assert(m1 == m2_save);
+    assert(m2 == m1_save);
+}
+
+int main(int, char**)
+{
+    test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.results/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.results/types.pass.cpp
new file mode 100644
index 0000000..0fd8220
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.results/types.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator,
+//           class Allocator = allocator<sub_match<BidirectionalIterator>>>
+// class match_results
+// {
+// public:
+//     typedef sub_match<BidirectionalIterator>                  value_type;
+//     typedef const value_type&                                 const_reference;
+//     typedef const_reference                                   reference;
+//     typedef /implementation-defined/                          const_iterator;
+//     typedef const_iterator                                    iterator;
+//     typedef typename iterator_traits<BidirectionalIterator>::difference_type difference_type;
+//     typedef typename allocator_traits<Allocator>::size_type   size_type;
+//     typedef Allocator                                         allocator_type;
+//     typedef typename iterator_traits<BidirectionalIterator>::value_type char_type;
+//     typedef basic_string<char_type>                           string_type;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test()
+{
+    typedef std::match_results<CharT*> MR;
+    static_assert((std::is_same<typename MR::value_type, std::sub_match<CharT*> >::value), "");
+    static_assert((std::is_same<typename MR::const_reference, const std::sub_match<CharT*>& >::value), "");
+    static_assert((std::is_same<typename MR::reference, std::sub_match<CharT*>& >::value), "");
+    static_assert((!std::is_same<typename MR::const_iterator, void>::value), "");
+    static_assert((std::is_same<typename MR::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename MR::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<typename MR::allocator_type, std::allocator<std::sub_match<CharT*> > >::value), "");
+    static_assert((std::is_same<typename MR::char_type, CharT>::value), "");
+    static_assert((std::is_same<typename MR::string_type, std::basic_string<CharT> >::value), "");
+}
+
+int main(int, char**)
+{
+    test<char>();
+    test<wchar_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_string_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_string_type.pass.cpp
new file mode 100644
index 0000000..31f2737
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_string_type.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// int compare(const string_type& s) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        typedef SM::string_type string;
+        SM sm = SM();
+        assert(sm.compare(string()) == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.compare(string()) > 0);
+        assert(sm.compare(string("123")) == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        typedef SM::string_type string;
+        SM sm = SM();
+        assert(sm.compare(string()) == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.compare(string()) > 0);
+        assert(sm.compare(string(L"123")) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_sub_match.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_sub_match.pass.cpp
new file mode 100644
index 0000000..fbd21e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_sub_match.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// int compare(const sub_match& s) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        SM sm2 = SM();
+        assert(sm.compare(sm2) == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.compare(sm2) > 0);
+        sm2.first = s;
+        sm2.second = s + 3;
+        sm2.matched = true;
+        assert(sm.compare(sm2) == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        SM sm2 = SM();
+        assert(sm.compare(sm2) == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.compare(sm2) > 0);
+        sm2.first = s;
+        sm2.second = s + 3;
+        sm2.matched = true;
+        assert(sm.compare(sm2) == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_value_type_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_value_type_ptr.pass.cpp
new file mode 100644
index 0000000..b213a51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/compare_value_type_ptr.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// int compare(const value_type* s) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        assert(sm.compare("") == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.compare("") > 0);
+        assert(sm.compare("123") == 0);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        assert(sm.compare(L"") == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.compare(L"") > 0);
+        assert(sm.compare(L"123") == 0);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/default.pass.cpp
new file mode 100644
index 0000000..c828f49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/default.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// constexpr sub_match();
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm;
+        assert(sm.matched == false);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm;
+        assert(sm.matched == false);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/length.pass.cpp
new file mode 100644
index 0000000..1027bd7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/length.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// difference_type length() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        assert(sm.length() == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.length() == 3);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        assert(sm.length() == 0);
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        assert(sm.length() == 3);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/operator_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/operator_string.pass.cpp
new file mode 100644
index 0000000..08a9dbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/operator_string.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// operator string_type() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        SM::string_type str = sm;
+        assert(str.empty());
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        str = sm;
+        assert(str == std::string("123"));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        SM::string_type str = sm;
+        assert(str.empty());
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        str = sm;
+        assert(str == std::wstring(L"123"));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/str.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/str.pass.cpp
new file mode 100644
index 0000000..ffdcbaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.members/str.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// string_type str() const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef char CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        SM::string_type str = sm.str();
+        assert(str.empty());
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        str = sm.str();
+        assert(str == std::string("123"));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef wchar_t CharT;
+        typedef std::sub_match<const CharT*> SM;
+        SM sm = SM();
+        SM::string_type str = sm.str();
+        assert(str.empty());
+        const CharT s[] = {'1', '2', '3', 0};
+        sm.first = s;
+        sm.second = s + 3;
+        sm.matched = true;
+        str = sm.str();
+        assert(str == std::wstring(L"123"));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.op/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.op/compare.pass.cpp
new file mode 100644
index 0000000..be072b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.op/compare.pass.cpp
@@ -0,0 +1,291 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// template <class BiIter>
+//     bool
+//     operator==(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator!=(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<=(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>=(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator==(const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator!=(const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator<(const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& lhs,
+//               const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator>(const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& lhs,
+//               const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool operator>=(const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& lhs,
+//                     const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator<=(const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator==(const sub_match<BiIter>& lhs,
+//                const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator!=(const sub_match<BiIter>& lhs,
+//                const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator<(const sub_match<BiIter>& lhs,
+//               const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool operator>(const sub_match<BiIter>& lhs,
+//                    const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator>=(const sub_match<BiIter>& lhs,
+//                const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs);
+//
+// template <class BiIter, class ST, class SA>
+//     bool
+//     operator<=(const sub_match<BiIter>& lhs,
+//                const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator==(typename iterator_traits<BiIter>::value_type const* lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator!=(typename iterator_traits<BiIter>::value_type const* lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<(typename iterator_traits<BiIter>::value_type const* lhs,
+//               const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>(typename iterator_traits<BiIter>::value_type const* lhs,
+//               const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>=(typename iterator_traits<BiIter>::value_type const* lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<=(typename iterator_traits<BiIter>::value_type const* lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator==(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const* rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator!=(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const* rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<(const sub_match<BiIter>& lhs,
+//               typename iterator_traits<BiIter>::value_type const* rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>(const sub_match<BiIter>& lhs,
+//               typename iterator_traits<BiIter>::value_type const* rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>=(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const* rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<=(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const* rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator==(typename iterator_traits<BiIter>::value_type const& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator!=(typename iterator_traits<BiIter>::value_type const& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<(typename iterator_traits<BiIter>::value_type const& lhs,
+//               const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>(typename iterator_traits<BiIter>::value_type const& lhs,
+//               const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>=(typename iterator_traits<BiIter>::value_type const& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<=(typename iterator_traits<BiIter>::value_type const& lhs,
+//                const sub_match<BiIter>& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator==(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator!=(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<(const sub_match<BiIter>& lhs,
+//               typename iterator_traits<BiIter>::value_type const& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>(const sub_match<BiIter>& lhs,
+//               typename iterator_traits<BiIter>::value_type const& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator>=(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const& rhs);
+//
+// template <class BiIter>
+//     bool
+//     operator<=(const sub_match<BiIter>& lhs,
+//                typename iterator_traits<BiIter>::value_type const& rhs);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test(const std::basic_string<CharT>& x, const std::basic_string<CharT>& y, bool doCStrTests = true)
+{
+    typedef std::basic_string<CharT> string;
+    typedef std::sub_match<typename string::const_iterator> sub_match;
+    sub_match sm1;
+    sm1.first = x.begin();
+    sm1.second = x.end();
+    sm1.matched = true;
+    sub_match sm2;
+    sm2.first = y.begin();
+    sm2.second = y.end();
+    sm2.matched = true;
+    assert((sm1 == sm2) == (x == y));
+    assert((sm1 != sm2) == (x != y));
+    assert((sm1 < sm2) == (x < y));
+    assert((sm1 > sm2) == (x > y));
+    assert((sm1 <= sm2) == (x <= y));
+    assert((sm1 >= sm2) == (x >= y));
+    assert((x == sm2) == (x == y));
+    assert((x != sm2) == (x != y));
+    assert((x < sm2) == (x < y));
+    assert((x > sm2) == (x > y));
+    assert((x <= sm2) == (x <= y));
+    assert((x >= sm2) == (x >= y));
+    assert((sm1 == y) == (x == y));
+    assert((sm1 != y) == (x != y));
+    assert((sm1 < y) == (x < y));
+    assert((sm1 > y) == (x > y));
+    assert((sm1 <= y) == (x <= y));
+    assert((sm1 >= y) == (x >= y));
+    if (doCStrTests) {
+        assert((x.c_str() == sm2) == (x == y));
+        assert((x.c_str() != sm2) == (x != y));
+        assert((x.c_str() < sm2) == (x < y));
+        assert((x.c_str() > sm2) == (x > y));
+        assert((x.c_str() <= sm2) == (x <= y));
+        assert((x.c_str() >= sm2) == (x >= y));
+        assert((sm1 == y.c_str()) == (x == y));
+        assert((sm1 != y.c_str()) == (x != y));
+        assert((sm1 < y.c_str()) == (x < y));
+        assert((sm1 > y.c_str()) == (x > y));
+        assert((sm1 <= y.c_str()) == (x <= y));
+        assert((sm1 >= y.c_str()) == (x >= y));
+        }
+    assert((x[0] == sm2) == (string(1, x[0]) == y));
+    assert((x[0] != sm2) == (string(1, x[0]) != y));
+    assert((x[0] < sm2) == (string(1, x[0]) < y));
+    assert((x[0] > sm2) == (string(1, x[0]) > y));
+    assert((x[0] <= sm2) == (string(1, x[0]) <= y));
+    assert((x[0] >= sm2) == (string(1, x[0]) >= y));
+    assert((sm1 == y[0]) == (x == string(1, y[0])));
+    assert((sm1 != y[0]) == (x != string(1, y[0])));
+    assert((sm1 < y[0]) == (x < string(1, y[0])));
+    assert((sm1 > y[0]) == (x > string(1, y[0])));
+    assert((sm1 <= y[0]) == (x <= string(1, y[0])));
+    assert((sm1 >= y[0]) == (x >= string(1, y[0])));
+}
+
+int main(int, char**)
+{
+    test(std::string("123"), std::string("123"));
+    test(std::string("1234"), std::string("123"));
+    test(std::string("123\000" "56", 6), std::string("123\000" "56", 6), false);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test(std::wstring(L"123"), std::wstring(L"123"));
+    test(std::wstring(L"1234"), std::wstring(L"123"));
+    test(std::wstring(L"123\000" L"56", 6), std::wstring(L"123\000" L"56", 6), false);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.op/stream.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.op/stream.pass.cpp
new file mode 100644
index 0000000..244d78d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/re.submatch.op/stream.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator> class sub_match;
+
+// template <class charT, class ST, class BiIter>
+//     basic_ostream<charT, ST>&
+//     operator<<(basic_ostream<charT, ST>& os, const sub_match<BiIter>& m);
+
+#include <regex>
+#include <sstream>
+#include <cassert>
+#include "test_macros.h"
+
+template <class CharT>
+void
+test(const std::basic_string<CharT>& s)
+{
+    typedef std::basic_string<CharT> string;
+    typedef std::sub_match<typename string::const_iterator> SM;
+    typedef std::basic_ostringstream<CharT> ostringstream;
+    SM sm;
+    sm.first = s.begin();
+    sm.second = s.end();
+    sm.matched = true;
+    ostringstream os;
+    os << sm;
+    assert(os.str() == s);
+}
+
+int main(int, char**)
+{
+    test(std::string("123"));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test(std::wstring(L"123"));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.submatch/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.submatch/types.pass.cpp
new file mode 100644
index 0000000..3c23d72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.submatch/types.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class BidirectionalIterator>
+// class sub_match
+//     : public pair<BidirectionalIterator, BidirectionalIterator>
+// {
+// public:
+//     typedef BidirectionalIterator                               iterator;
+//     typedef typename iterator_traits<iterator>::value_type      value_type;
+//     typedef typename iterator_traits<iterator>::difference_type difference_type;
+//     typedef basic_string<value_type>                            string_type;
+//
+//     bool matched;
+//     ...
+// };
+
+#include <regex>
+#include <type_traits>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::sub_match<char*> SM;
+        static_assert((std::is_same<SM::iterator, char*>::value), "");
+        static_assert((std::is_same<SM::value_type, char>::value), "");
+        static_assert((std::is_same<SM::difference_type, std::ptrdiff_t>::value), "");
+        static_assert((std::is_same<SM::string_type, std::string>::value), "");
+        static_assert((std::is_convertible<SM*, std::pair<char*, char*>*>::value), "");
+
+        static_assert((std::is_same<std::csub_match, std::sub_match<const char*> >::value), "");
+        static_assert((std::is_same<std::ssub_match, std::sub_match<std::string::const_iterator> >::value), "");
+
+        SM sm;
+        sm.first = nullptr;
+        sm.second = nullptr;
+        sm.matched = false;
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::sub_match<wchar_t*> SM;
+        static_assert((std::is_same<SM::iterator, wchar_t*>::value), "");
+        static_assert((std::is_same<SM::value_type, wchar_t>::value), "");
+        static_assert((std::is_same<SM::difference_type, std::ptrdiff_t>::value), "");
+        static_assert((std::is_same<SM::string_type, std::wstring>::value), "");
+        static_assert((std::is_convertible<SM*, std::pair<wchar_t*, wchar_t*>*>::value), "");
+
+        static_assert((std::is_same<std::wcsub_match, std::sub_match<const wchar_t*> >::value), "");
+        static_assert((std::is_same<std::wssub_match, std::sub_match<std::wstring::const_iterator> >::value), "");
+
+        SM sm;
+        sm.first = nullptr;
+        sm.second = nullptr;
+        sm.matched = false;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/cmatch.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/cmatch.pass.cpp
new file mode 100644
index 0000000..7b85a69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/cmatch.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef match_results<const char*>   cmatch;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::match_results<const char*>, std::cmatch>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/cregex_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/cregex_iterator.pass.cpp
new file mode 100644
index 0000000..29fdade
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/cregex_iterator.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_iterator<const char*>   cregex_iterator;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_iterator<const char*>, std::cregex_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/cregex_token_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/cregex_token_iterator.pass.cpp
new file mode 100644
index 0000000..7ca531d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/cregex_token_iterator.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_token_iterator<const char*>   cregex_token_iterator;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_token_iterator<const char*>, std::cregex_token_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/csub_match.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/csub_match.pass.cpp
new file mode 100644
index 0000000..2ace0b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/csub_match.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef sub_match<const char*>   csub_match;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::sub_match<const char*>, std::csub_match>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/regex.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/regex.pass.cpp
new file mode 100644
index 0000000..0b4c07b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/regex.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef basic_regex<char>    regex;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::basic_regex<char>, std::regex>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/smatch.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/smatch.pass.cpp
new file mode 100644
index 0000000..01fa1e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/smatch.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef match_results<string::const_iterator>   smatch;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::match_results<std::string::const_iterator>, std::smatch>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/sregex_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/sregex_iterator.pass.cpp
new file mode 100644
index 0000000..1ae462c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/sregex_iterator.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_iterator<string::const_iterator>   sregex_iterator;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_iterator<std::string::const_iterator>, std::sregex_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/sregex_token_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/sregex_token_iterator.pass.cpp
new file mode 100644
index 0000000..4b67b66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/sregex_token_iterator.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_token_iterator<string::const_iterator>   sregex_token_iterator;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_token_iterator<std::string::const_iterator>, std::sregex_token_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/ssub_match.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/ssub_match.pass.cpp
new file mode 100644
index 0000000..fe33129
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/ssub_match.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef sub_match<string::const_iterator>   ssub_match;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::sub_match<std::string::const_iterator>, std::ssub_match>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wcmatch.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcmatch.pass.cpp
new file mode 100644
index 0000000..5b23042
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcmatch.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef match_results<const wchar_t*>   wcmatch;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::match_results<const wchar_t*>, std::wcmatch>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wcregex_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcregex_iterator.pass.cpp
new file mode 100644
index 0000000..c0f2e8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcregex_iterator.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_iterator<const wchar_t*>   wcregex_iterator;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_iterator<const wchar_t*>, std::wcregex_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wcregex_token_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcregex_token_iterator.pass.cpp
new file mode 100644
index 0000000..5fd0ecb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcregex_token_iterator.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_token_iterator<const wchar_t*>   wcregex_token_iterator;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_token_iterator<const wchar_t*>, std::wcregex_token_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wcsub_match.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcsub_match.pass.cpp
new file mode 100644
index 0000000..6f86199
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wcsub_match.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef sub_match<const wchar_t*>   wcsub_match;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::sub_match<const wchar_t*>, std::wcsub_match>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wregex.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wregex.pass.cpp
new file mode 100644
index 0000000..1bb2af9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wregex.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef basic_regex<wchar_t> wregex;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::basic_regex<wchar_t>, std::wregex>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wsmatch.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wsmatch.pass.cpp
new file mode 100644
index 0000000..2c26dda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wsmatch.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef match_results<wstring::const_iterator>   wsmatch;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::match_results<std::wstring::const_iterator>, std::wsmatch>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wsregex_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wsregex_iterator.pass.cpp
new file mode 100644
index 0000000..5e0fa27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wsregex_iterator.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_iterator<wstring::const_iterator>   wsregex_iterator;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_iterator<std::wstring::const_iterator>, std::wsregex_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wsregex_token_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wsregex_token_iterator.pass.cpp
new file mode 100644
index 0000000..9a33568
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wsregex_token_iterator.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef regex_token_iterator<wstring::const_iterator>   wsregex_token_iterator;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_token_iterator<std::wstring::const_iterator>, std::wsregex_token_iterator>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.syn/wssub_match.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.syn/wssub_match.pass.cpp
new file mode 100644
index 0000000..f963c70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.syn/wssub_match.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// typedef sub_match<wstring::const_iterator>   wssub_match;
+
+// XFAIL: no-wide-characters
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::sub_match<std::wstring::const_iterator>, std::wssub_match>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/default.pass.cpp
new file mode 100644
index 0000000..ff817cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/default.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// regex_traits();
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        assert(t.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+        assert(t.getloc().name() == "C");
+    }
+#endif
+    {
+        std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+        std::regex_traits<char> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+        std::regex_traits<wchar_t> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/getloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/getloc.pass.cpp
new file mode 100644
index 0000000..55820cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/getloc.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// locale_type getloc()const;
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        assert(t.getloc().name() == "C");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+        assert(t.getloc().name() == "C");
+    }
+#endif
+    {
+        std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+        std::regex_traits<char> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+        std::regex_traits<wchar_t> t;
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/imbue.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/imbue.pass.cpp
new file mode 100644
index 0000000..0200ce0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/imbue.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// locale_type imbue(locale_type l);
+
+#include <regex>
+#include <locale>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        std::locale loc = t.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(loc.name() == "C");
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/isctype.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/isctype.pass.cpp
new file mode 100644
index 0000000..e492211
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/isctype.pass.cpp
@@ -0,0 +1,285 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// bool isctype(charT c, char_class_type f) const;
+
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+
+        std::string s("w");
+        assert( t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "alnum";
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "alpha";
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "blank";
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "cntrl";
+        assert( t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "digit";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "graph";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "lower";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "print";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "punct";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "space";
+        assert( t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "upper";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+
+        s = "xdigit";
+        assert(!t.isctype('\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype('5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype('@', t.lookup_classname(s.begin(), s.end())));
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+
+        std::wstring s(L"w");
+        assert( t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"alnum";
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"alpha";
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"blank";
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"cntrl";
+        assert( t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"digit";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"graph";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"lower";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"print";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"punct";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"space";
+        assert( t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"upper";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+
+        s = L"xdigit";
+        assert(!t.isctype(L'\n', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'_', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'a', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'Z', t.lookup_classname(s.begin(), s.end())));
+        assert( t.isctype(L'5', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L' ', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'-', t.lookup_classname(s.begin(), s.end())));
+        assert(!t.isctype(L'@', t.lookup_classname(s.begin(), s.end())));
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/length.pass.cpp
new file mode 100644
index 0000000..e14df64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/length.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// static std::size_t length(const char_type* p);
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::regex_traits<char>::length("") == 0);
+    assert(std::regex_traits<char>::length("1") == 1);
+    assert(std::regex_traits<char>::length("12") == 2);
+    assert(std::regex_traits<char>::length("123") == 3);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::regex_traits<wchar_t>::length(L"") == 0);
+    assert(std::regex_traits<wchar_t>::length(L"1") == 1);
+    assert(std::regex_traits<wchar_t>::length(L"12") == 2);
+    assert(std::regex_traits<wchar_t>::length(L"123") == 3);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/lookup_classname.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/lookup_classname.pass.cpp
new file mode 100644
index 0000000..caa04c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/lookup_classname.pass.cpp
@@ -0,0 +1,250 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// template <class ForwardIterator>
+//   char_class_type
+//   lookup_classname(ForwardIterator first, ForwardIterator last,
+//                    bool icase = false) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <class char_type>
+void
+test(const char_type* A,
+     typename std::regex_traits<char_type>::char_class_type expected,
+     bool icase = false)
+{
+    typedef typename std::regex_traits<char_type>::char_class_type char_class_type;
+    std::regex_traits<char_type> t;
+    typedef forward_iterator<const char_type*> F;
+    char_class_type result = t.lookup_classname(F(A), F(A + t.length(A)), icase);
+    assert(result == expected);
+}
+
+template <class char_type>
+void
+test_w(const char_type* A,
+       typename std::regex_traits<char_type>::char_class_type expected,
+        bool icase = false)
+{
+    typedef typename std::regex_traits<char_type>::char_class_type char_class_type;
+    std::regex_traits<char_type> t;
+    typedef forward_iterator<const char_type*> F;
+    char_class_type result = t.lookup_classname(F(A), F(A + t.length(A)), icase);
+    assert((result & expected) == expected);
+    LIBCPP_ASSERT((expected | std::regex_traits<char_type>::__regex_word) == result);
+
+    const bool matches_underscore = t.isctype('_', result);
+    if (result != expected)
+      assert(matches_underscore && "expected to match underscore");
+    else
+      assert(!matches_underscore && "should not match underscore");
+}
+
+int main(int, char**)
+{
+//  if __regex_word is not distinct from all the classes, bad things happen
+//  See https://llvm.org/PR26476 for an example.
+    LIBCPP_ASSERT((std::ctype_base::space  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::print  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::cntrl  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::upper  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::lower  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::alpha  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::digit  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::punct  & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::xdigit & std::regex_traits<char>::__regex_word) == 0);
+    LIBCPP_ASSERT((std::ctype_base::blank  & std::regex_traits<char>::__regex_word) == 0);
+
+    test("d", std::ctype_base::digit);
+    test("D", std::ctype_base::digit);
+    test("d", std::ctype_base::digit, true);
+    test("D", std::ctype_base::digit, true);
+
+    test_w("w", std::ctype_base::alnum
+              | std::ctype_base::upper | std::ctype_base::lower);
+    test_w("W", std::ctype_base::alnum
+              | std::ctype_base::upper | std::ctype_base::lower);
+    test_w("w", std::ctype_base::alnum
+              | std::ctype_base::upper | std::ctype_base::lower, true);
+    test_w("W", std::ctype_base::alnum
+              | std::ctype_base::upper | std::ctype_base::lower, true);
+
+    test("s", std::ctype_base::space);
+    test("S", std::ctype_base::space);
+    test("s", std::ctype_base::space, true);
+    test("S", std::ctype_base::space, true);
+
+    test("alnum", std::ctype_base::alnum);
+    test("AlNum", std::ctype_base::alnum);
+    test("alnum", std::ctype_base::alnum, true);
+    test("AlNum", std::ctype_base::alnum, true);
+
+    test("alpha", std::ctype_base::alpha);
+    test("Alpha", std::ctype_base::alpha);
+    test("alpha", std::ctype_base::alpha, true);
+    test("Alpha", std::ctype_base::alpha, true);
+
+    test("blank", std::ctype_base::blank);
+    test("Blank", std::ctype_base::blank);
+    test("blank", std::ctype_base::blank, true);
+    test("Blank", std::ctype_base::blank, true);
+
+    test("cntrl", std::ctype_base::cntrl);
+    test("Cntrl", std::ctype_base::cntrl);
+    test("cntrl", std::ctype_base::cntrl, true);
+    test("Cntrl", std::ctype_base::cntrl, true);
+
+    test("digit", std::ctype_base::digit);
+    test("Digit", std::ctype_base::digit);
+    test("digit", std::ctype_base::digit, true);
+    test("Digit", std::ctype_base::digit, true);
+
+    test("digit", std::ctype_base::digit);
+    test("DIGIT", std::ctype_base::digit);
+    test("digit", std::ctype_base::digit, true);
+    test("Digit", std::ctype_base::digit, true);
+
+    test("graph", std::ctype_base::graph);
+    test("GRAPH", std::ctype_base::graph);
+    test("graph", std::ctype_base::graph, true);
+    test("Graph", std::ctype_base::graph, true);
+
+    test("lower", std::ctype_base::lower);
+    test("LOWER", std::ctype_base::lower);
+    test("lower", std::ctype_base::lower | std::ctype_base::alpha, true);
+    test("Lower", std::ctype_base::lower | std::ctype_base::alpha, true);
+
+    test("print", std::ctype_base::print);
+    test("PRINT", std::ctype_base::print);
+    test("print", std::ctype_base::print, true);
+    test("Print", std::ctype_base::print, true);
+
+    test("punct", std::ctype_base::punct);
+    test("PUNCT", std::ctype_base::punct);
+    test("punct", std::ctype_base::punct, true);
+    test("Punct", std::ctype_base::punct, true);
+
+    test("space", std::ctype_base::space);
+    test("SPACE", std::ctype_base::space);
+    test("space", std::ctype_base::space, true);
+    test("Space", std::ctype_base::space, true);
+
+    test("upper", std::ctype_base::upper);
+    test("UPPER", std::ctype_base::upper);
+    test("upper", std::ctype_base::upper | std::ctype_base::alpha, true);
+    test("Upper", std::ctype_base::upper | std::ctype_base::alpha, true);
+
+    test("xdigit", std::ctype_base::xdigit);
+    test("XDIGIT", std::ctype_base::xdigit);
+    test("xdigit", std::ctype_base::xdigit, true);
+    test("Xdigit", std::ctype_base::xdigit, true);
+
+    test("dig", std::ctype_base::mask());
+    test("", std::ctype_base::mask());
+    test("digits", std::ctype_base::mask());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test(L"d", std::ctype_base::digit);
+    test(L"D", std::ctype_base::digit);
+    test(L"d", std::ctype_base::digit, true);
+    test(L"D", std::ctype_base::digit, true);
+
+    test_w(L"w", std::ctype_base::alnum
+                      | std::ctype_base::upper | std::ctype_base::lower);
+    test_w(L"W", std::ctype_base::alnum
+                      | std::ctype_base::upper | std::ctype_base::lower);
+    test_w(L"w", std::ctype_base::alnum
+                      | std::ctype_base::upper | std::ctype_base::lower, true);
+    test_w(L"W", std::ctype_base::alnum
+                      | std::ctype_base::upper | std::ctype_base::lower, true);
+
+    test(L"s", std::ctype_base::space);
+    test(L"S", std::ctype_base::space);
+    test(L"s", std::ctype_base::space, true);
+    test(L"S", std::ctype_base::space, true);
+
+    test(L"alnum", std::ctype_base::alnum);
+    test(L"AlNum", std::ctype_base::alnum);
+    test(L"alnum", std::ctype_base::alnum, true);
+    test(L"AlNum", std::ctype_base::alnum, true);
+
+    test(L"alpha", std::ctype_base::alpha);
+    test(L"Alpha", std::ctype_base::alpha);
+    test(L"alpha", std::ctype_base::alpha, true);
+    test(L"Alpha", std::ctype_base::alpha, true);
+
+    test(L"blank", std::ctype_base::blank);
+    test(L"Blank", std::ctype_base::blank);
+    test(L"blank", std::ctype_base::blank, true);
+    test(L"Blank", std::ctype_base::blank, true);
+
+    test(L"cntrl", std::ctype_base::cntrl);
+    test(L"Cntrl", std::ctype_base::cntrl);
+    test(L"cntrl", std::ctype_base::cntrl, true);
+    test(L"Cntrl", std::ctype_base::cntrl, true);
+
+    test(L"digit", std::ctype_base::digit);
+    test(L"Digit", std::ctype_base::digit);
+    test(L"digit", std::ctype_base::digit, true);
+    test(L"Digit", std::ctype_base::digit, true);
+
+    test(L"digit", std::ctype_base::digit);
+    test(L"DIGIT", std::ctype_base::digit);
+    test(L"digit", std::ctype_base::digit, true);
+    test(L"Digit", std::ctype_base::digit, true);
+
+    test(L"graph", std::ctype_base::graph);
+    test(L"GRAPH", std::ctype_base::graph);
+    test(L"graph", std::ctype_base::graph, true);
+    test(L"Graph", std::ctype_base::graph, true);
+
+    test(L"lower", std::ctype_base::lower);
+    test(L"LOWER", std::ctype_base::lower);
+    test(L"lower", std::ctype_base::lower | std::ctype_base::alpha, true);
+    test(L"Lower", std::ctype_base::lower | std::ctype_base::alpha, true);
+
+    test(L"print", std::ctype_base::print);
+    test(L"PRINT", std::ctype_base::print);
+    test(L"print", std::ctype_base::print, true);
+    test(L"Print", std::ctype_base::print, true);
+
+    test(L"punct", std::ctype_base::punct);
+    test(L"PUNCT", std::ctype_base::punct);
+    test(L"punct", std::ctype_base::punct, true);
+    test(L"Punct", std::ctype_base::punct, true);
+
+    test(L"space", std::ctype_base::space);
+    test(L"SPACE", std::ctype_base::space);
+    test(L"space", std::ctype_base::space, true);
+    test(L"Space", std::ctype_base::space, true);
+
+    test(L"upper", std::ctype_base::upper);
+    test(L"UPPER", std::ctype_base::upper);
+    test(L"upper", std::ctype_base::upper | std::ctype_base::alpha, true);
+    test(L"Upper", std::ctype_base::upper | std::ctype_base::alpha, true);
+
+    test(L"xdigit", std::ctype_base::xdigit);
+    test(L"XDIGIT", std::ctype_base::xdigit);
+    test(L"xdigit", std::ctype_base::xdigit, true);
+    test(L"Xdigit", std::ctype_base::xdigit, true);
+
+    test(L"dig", std::ctype_base::mask());
+    test(L"", std::ctype_base::mask());
+    test(L"digits", std::ctype_base::mask());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/lookup_collatename.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/lookup_collatename.pass.cpp
new file mode 100644
index 0000000..178979d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/lookup_collatename.pass.cpp
@@ -0,0 +1,202 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// template <class ForwardIterator>
+//   string_type
+//   lookup_collatename(ForwardIterator first, ForwardIterator last) const;
+
+// TODO: investigation needed
+// XFAIL: target={{.*}}-linux-gnu{{.*}}
+
+#include <regex>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "platform_support.h" // locale name macros
+
+template <class char_type>
+void
+test(const char_type* A, const std::basic_string<char_type>& expected)
+{
+    std::regex_traits<char_type> t;
+    typedef forward_iterator<const char_type*> F;
+    assert(t.lookup_collatename(F(A), F(A + t.length(A))) == expected);
+}
+
+int main(int, char**)
+{
+    test("NUL", std::string("\x00", 1));
+    test("alert", std::string("\x07"));
+    test("backspace", std::string("\x08"));
+    test("tab", std::string("\x09"));
+    test("carriage-return", std::string("\x0D"));
+    test("newline", std::string("\x0A"));
+    test("vertical-tab", std::string("\x0B"));
+    test("form-feed", std::string("\x0C"));
+    test("space", std::string(" "));
+    test("exclamation-mark", std::string("!"));
+    test("quotation-mark", std::string("\""));
+    test("number-sign", std::string("#"));
+    test("dollar-sign", std::string("$"));
+    test("percent-sign", std::string("%"));
+    test("ampersand", std::string("&"));
+    test("apostrophe", std::string("\'"));
+    test("left-parenthesis", std::string("("));
+    test("right-parenthesis", std::string(")"));
+    test("asterisk", std::string("*"));
+    test("plus-sign", std::string("+"));
+    test("comma", std::string(","));
+    test("hyphen-minus", std::string("-"));
+    test("hyphen", std::string("-"));
+    test("full-stop", std::string("."));
+    test("period", std::string("."));
+    test("slash", std::string("/"));
+    test("solidus", std::string("/"));
+    test("zero", std::string("0"));
+    test("one", std::string("1"));
+    test("two", std::string("2"));
+    test("three", std::string("3"));
+    test("four", std::string("4"));
+    test("five", std::string("5"));
+    test("six", std::string("6"));
+    test("seven", std::string("7"));
+    test("eight", std::string("8"));
+    test("nine", std::string("9"));
+    test("colon", std::string(":"));
+    test("semicolon", std::string(";"));
+    test("less-than-sign", std::string("<"));
+    test("equals-sign", std::string("="));
+    test("greater-than-sign", std::string(">"));
+    test("question-mark", std::string("?"));
+    test("commercial-at", std::string("@"));
+    for (char c = 'A'; c <= 'Z'; ++c)
+    {
+        const char a[2] = {c};
+        test(a, std::string(a));
+    }
+    test("left-square-bracket", std::string("["));
+    test("backslash", std::string("\\"));
+    test("reverse-solidus", std::string("\\"));
+    test("right-square-bracket", std::string("]"));
+    test("circumflex-accent", std::string("^"));
+    test("circumflex", std::string("^"));
+    test("low-line", std::string("_"));
+    test("underscore", std::string("_"));
+    test("grave-accent", std::string("`"));
+    for (char c = 'a'; c <= 'z'; ++c)
+    {
+        const char a[2] = {c};
+        test(a, std::string(a));
+    }
+    test("left-brace", std::string("{"));
+    test("left-curly-bracket", std::string("{"));
+    test("vertical-line", std::string("|"));
+    test("right-brace", std::string("}"));
+    test("right-curly-bracket", std::string("}"));
+    test("tilde", std::string("~"));
+
+    test("tild", std::string(""));
+    test("ch", std::string(""));
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    test("ch", std::string("ch"));
+    std::locale::global(std::locale("C"));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test(L"NUL", std::wstring(L"\x00", 1));
+    test(L"alert", std::wstring(L"\x07"));
+    test(L"backspace", std::wstring(L"\x08"));
+    test(L"tab", std::wstring(L"\x09"));
+    test(L"carriage-return", std::wstring(L"\x0D"));
+    test(L"newline", std::wstring(L"\x0A"));
+    test(L"vertical-tab", std::wstring(L"\x0B"));
+    test(L"form-feed", std::wstring(L"\x0C"));
+    test(L"space", std::wstring(L" "));
+    test(L"exclamation-mark", std::wstring(L"!"));
+    test(L"quotation-mark", std::wstring(L"\""));
+    test(L"number-sign", std::wstring(L"#"));
+    test(L"dollar-sign", std::wstring(L"$"));
+    test(L"percent-sign", std::wstring(L"%"));
+    test(L"ampersand", std::wstring(L"&"));
+    test(L"apostrophe", std::wstring(L"\'"));
+    test(L"left-parenthesis", std::wstring(L"("));
+    test(L"right-parenthesis", std::wstring(L")"));
+    test(L"asterisk", std::wstring(L"*"));
+    test(L"plus-sign", std::wstring(L"+"));
+    test(L"comma", std::wstring(L","));
+    test(L"hyphen-minus", std::wstring(L"-"));
+    test(L"hyphen", std::wstring(L"-"));
+    test(L"full-stop", std::wstring(L"."));
+    test(L"period", std::wstring(L"."));
+    test(L"slash", std::wstring(L"/"));
+    test(L"solidus", std::wstring(L"/"));
+    test(L"zero", std::wstring(L"0"));
+    test(L"one", std::wstring(L"1"));
+    test(L"two", std::wstring(L"2"));
+    test(L"three", std::wstring(L"3"));
+    test(L"four", std::wstring(L"4"));
+    test(L"five", std::wstring(L"5"));
+    test(L"six", std::wstring(L"6"));
+    test(L"seven", std::wstring(L"7"));
+    test(L"eight", std::wstring(L"8"));
+    test(L"nine", std::wstring(L"9"));
+    test(L"colon", std::wstring(L":"));
+    test(L"semicolon", std::wstring(L";"));
+    test(L"less-than-sign", std::wstring(L"<"));
+    test(L"equals-sign", std::wstring(L"="));
+    test(L"greater-than-sign", std::wstring(L">"));
+    test(L"question-mark", std::wstring(L"?"));
+    test(L"commercial-at", std::wstring(L"@"));
+    for (wchar_t c = L'A'; c <= L'Z'; ++c)
+    {
+        const wchar_t a[2] = {c};
+        test(a, std::wstring(a));
+    }
+    test(L"left-square-bracket", std::wstring(L"["));
+    test(L"backslash", std::wstring(L"\\"));
+    test(L"reverse-solidus", std::wstring(L"\\"));
+    test(L"right-square-bracket", std::wstring(L"]"));
+    test(L"circumflex-accent", std::wstring(L"^"));
+    test(L"circumflex", std::wstring(L"^"));
+    test(L"low-line", std::wstring(L"_"));
+    test(L"underscore", std::wstring(L"_"));
+    test(L"grave-accent", std::wstring(L"`"));
+    for (wchar_t c = L'a'; c <= L'z'; ++c)
+    {
+        const wchar_t a[2] = {c};
+        test(a, std::wstring(a));
+    }
+    test(L"left-brace", std::wstring(L"{"));
+    test(L"left-curly-bracket", std::wstring(L"{"));
+    test(L"vertical-line", std::wstring(L"|"));
+    test(L"right-brace", std::wstring(L"}"));
+    test(L"right-curly-bracket", std::wstring(L"}"));
+    test(L"tilde", std::wstring(L"~"));
+
+    test(L"tild", std::wstring(L""));
+    test(L"ch", std::wstring(L""));
+    std::locale::global(std::locale(LOCALE_cs_CZ_ISO8859_2));
+    test(L"ch", std::wstring(L"ch"));
+    std::locale::global(std::locale("C"));
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/transform.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/transform.pass.cpp
new file mode 100644
index 0000000..369dbdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/transform.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+// XFAIL: LIBCXX-AIX-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// template <class ForwardIterator>
+//   string_type transform(ForwardIterator first, ForwardIterator last) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        const char a[] = "a";
+        const char B[] = "B";
+        typedef forward_iterator<const char*> F;
+        assert(t.transform(F(a), F(a+1)) > t.transform(F(B), F(B+1)));
+        t.imbue(std::locale(LOCALE_cs_CZ_ISO8859_2));
+        assert(t.transform(F(a), F(a+1)) < t.transform(F(B), F(B+1)));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+        const wchar_t a[] = L"a";
+        const wchar_t B[] = L"B";
+        typedef forward_iterator<const wchar_t*> F;
+        assert(t.transform(F(a), F(a+1)) > t.transform(F(B), F(B+1)));
+        t.imbue(std::locale(LOCALE_cs_CZ_ISO8859_2));
+        assert(t.transform(F(a), F(a+1)) < t.transform(F(B), F(B+1)));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/transform_primary.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/transform_primary.pass.cpp
new file mode 100644
index 0000000..422e3a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/transform_primary.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// NetBSD does not support LC_COLLATE at the moment
+// XFAIL: netbsd
+
+// XFAIL: LIBCXX-AIX-FIXME
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// REQUIRES: locale.cs_CZ.ISO8859-2
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// template <class ForwardIterator>
+//   string_type
+//   transform_primary(ForwardIterator first, ForwardIterator last) const;
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "platform_support.h" // locale name macros
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        const char A[] = "A";
+        const char Aacute[] = "\xC1";
+        typedef forward_iterator<const char*> F;
+        assert(t.transform_primary(F(A), F(A+1)) !=
+               t.transform_primary(F(Aacute), F(Aacute+1)));
+        t.imbue(std::locale(LOCALE_cs_CZ_ISO8859_2));
+        assert(t.transform_primary(F(A), F(A+1)) ==
+               t.transform_primary(F(Aacute), F(Aacute+1)));
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+        const wchar_t A[] = L"A";
+        const wchar_t Aacute[] = L"\xC1";
+        typedef forward_iterator<const wchar_t*> F;
+        assert(t.transform_primary(F(A), F(A+1)) !=
+               t.transform_primary(F(Aacute), F(Aacute+1)));
+        t.imbue(std::locale(LOCALE_cs_CZ_ISO8859_2));
+        assert(t.transform_primary(F(A), F(A+1)) ==
+               t.transform_primary(F(Aacute), F(Aacute+1)));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/translate.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/translate.pass.cpp
new file mode 100644
index 0000000..a3e5978
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/translate.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// charT translate(charT c) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        assert(t.translate('a') == 'a');
+        assert(t.translate('B') == 'B');
+        assert(t.translate('c') == 'c');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+        assert(t.translate(L'a') == L'a');
+        assert(t.translate(L'B') == L'B');
+        assert(t.translate(L'c') == L'c');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/translate_nocase.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/translate_nocase.pass.cpp
new file mode 100644
index 0000000..1048e58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/translate_nocase.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// charT translate_nocase(charT c) const;
+
+// REQUIRES: locale.en_US.UTF-8
+// XFAIL: win32-broken-utf8-wchar-ctype
+
+#include <regex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "platform_support.h"
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+        assert(t.translate_nocase(' ') == ' ');
+        assert(t.translate_nocase('A') == 'a');
+        assert(t.translate_nocase('\x07') == '\x07');
+        assert(t.translate_nocase('.') == '.');
+        assert(t.translate_nocase('a') == 'a');
+        assert(t.translate_nocase('1') == '1');
+        assert(t.translate_nocase('\xDA') == '\xDA');
+        assert(t.translate_nocase('\xFA') == '\xFA');
+        t.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(t.translate_nocase(' ') == ' ');
+        assert(t.translate_nocase('A') == 'a');
+        assert(t.translate_nocase('\x07') == '\x07');
+        assert(t.translate_nocase('.') == '.');
+        assert(t.translate_nocase('a') == 'a');
+        assert(t.translate_nocase('1') == '1');
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+        assert(t.translate_nocase(L' ') == L' ');
+        assert(t.translate_nocase(L'A') == L'a');
+        assert(t.translate_nocase(L'\x07') == L'\x07');
+        assert(t.translate_nocase(L'.') == L'.');
+        assert(t.translate_nocase(L'a') == L'a');
+        assert(t.translate_nocase(L'1') == L'1');
+        assert(t.translate_nocase(L'\xDA') == L'\xDA');
+        assert(t.translate_nocase(L'\xFA') == L'\xFA');
+        t.imbue(std::locale(LOCALE_en_US_UTF_8));
+        assert(t.translate_nocase(L' ') == L' ');
+        assert(t.translate_nocase(L'A') == L'a');
+        assert(t.translate_nocase(L'\x07') == L'\x07');
+        assert(t.translate_nocase(L'.') == L'.');
+        assert(t.translate_nocase(L'a') == L'a');
+        assert(t.translate_nocase(L'1') == L'1');
+        assert(t.translate_nocase(L'\xDA') == L'\xFA');
+        assert(t.translate_nocase(L'\xFA') == L'\xFA');
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/types.pass.cpp
new file mode 100644
index 0000000..f15a647
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT>
+// struct regex_traits
+// {
+// public:
+//     typedef charT                   char_type;
+//     typedef basic_string<char_type> string_type;
+//     typedef locale                  locale_type;
+
+#include <regex>
+#include <type_traits>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::regex_traits<char>::char_type, char>::value), "");
+    static_assert((std::is_same<std::regex_traits<char>::string_type, std::string>::value), "");
+    static_assert((std::is_same<std::regex_traits<char>::locale_type, std::locale>::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert((std::is_same<std::regex_traits<wchar_t>::char_type, wchar_t>::value), "");
+    static_assert((std::is_same<std::regex_traits<wchar_t>::string_type, std::wstring>::value), "");
+    static_assert((std::is_same<std::regex_traits<wchar_t>::locale_type, std::locale>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/re/re.traits/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/re/re.traits/value.pass.cpp
new file mode 100644
index 0000000..d4b7b0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/re/re.traits/value.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <regex>
+
+// template <class charT> struct regex_traits;
+
+// int value(charT ch, int radix) const;
+
+#include <regex>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::regex_traits<char> t;
+
+        for (char c = 0; c < '0'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+        for (char c = '0'; c < '8'; ++c)
+        {
+            assert(t.value(c, 8) == c - '0');
+            assert(t.value(c, 10) == c - '0');
+            assert(t.value(c, 16) == c - '0');
+        }
+        for (char c = '8'; c < ':'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == c - '0');
+            assert(t.value(c, 16) == c - '0');
+        }
+        for (char c = ':'; c < 'A'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+        for (char c = 'A'; c < 'G'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == c - 'A' +10);
+        }
+        for (char c = 'G'; c < 'a'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+        for (char c = 'a'; c < 'g'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == c - 'a' +10);
+        }
+        for (int c = 'g'; c < 256; ++c)
+        {
+            assert(t.value(char(c), 8) == -1);
+            assert(t.value(char(c), 10) == -1);
+            assert(t.value(char(c), 16) == -1);
+        }
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::regex_traits<wchar_t> t;
+
+        for (wchar_t c = 0; c < '0'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+        for (wchar_t c = '0'; c < '8'; ++c)
+        {
+            assert(t.value(c, 8) ==  static_cast<int>(c - '0'));
+            assert(t.value(c, 10) == static_cast<int>(c - '0'));
+            assert(t.value(c, 16) == static_cast<int>(c - '0'));
+        }
+        for (wchar_t c = '8'; c < ':'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == static_cast<int>(c - '0'));
+            assert(t.value(c, 16) == static_cast<int>(c - '0'));
+        }
+        for (wchar_t c = ':'; c < 'A'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+        for (wchar_t c = 'A'; c < 'G'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == static_cast<int>(c - 'A' +10));
+        }
+        for (wchar_t c = 'G'; c < 'a'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+        for (wchar_t c = 'a'; c < 'g'; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == static_cast<int>(c - 'a' +10));
+        }
+        for (wchar_t c = 'g'; c < 0xFFFF; ++c)
+        {
+            assert(t.value(c, 8) == -1);
+            assert(t.value(c, 10) == -1);
+            assert(t.value(c, 16) == -1);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/char_type_hash.fail.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/char_type_hash.fail.cpp
new file mode 100644
index 0000000..721d7e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/char_type_hash.fail.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// Test that hash specializations for <string> require "char_traits<_CharT>" not just any "_Trait".
+
+#include <functional>
+#include <string>
+
+#include "test_macros.h"
+
+template <class _CharT>
+struct trait // copied from <__string>
+{
+    typedef _CharT         char_type;
+    typedef int            int_type;
+    typedef std::streamoff off_type;
+    typedef std::streampos pos_type;
+    typedef std::mbstate_t state_type;
+
+    static inline void assign(char_type& __c1, const char_type& __c2) {
+        __c1 = __c2;
+    }
+    static inline bool eq(char_type __c1, char_type __c2) { return __c1 == __c2; }
+    static inline bool lt(char_type __c1, char_type __c2) { return __c1 < __c2; }
+
+    static int compare(const char_type* __s1, const char_type* __s2, size_t __n);
+    static size_t length(const char_type* __s);
+    static const char_type* find(const char_type* __s, size_t __n,
+                                 const char_type& __a);
+
+    static char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
+    static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
+    static char_type* assign(char_type* __s, size_t __n, char_type __a);
+
+    static inline int_type not_eof(int_type __c) {
+        return eq_int_type(__c, eof()) ? ~eof() : __c;
+    }
+    static inline char_type to_char_type(int_type __c) { return char_type(__c); }
+    static inline int_type to_int_type(char_type __c) { return int_type(__c); }
+    static inline bool eq_int_type(int_type __c1, int_type __c2) {
+        return __c1 == __c2;
+    }
+    static inline int_type eof() { return int_type(EOF); }
+};
+
+template <class CharT>
+void test() {
+    typedef std::basic_string<CharT, trait<CharT> > str_t;
+    std::hash<str_t>
+        h; // expected-error-re 4 {{{{call to implicitly-deleted default constructor of 'std::hash<str_t>'|implicit instantiation of undefined template}} {{.+}}}}}}
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    // expected-error-re@-2 {{{{call to implicitly-deleted default constructor of 'std::hash<str_t>'|implicit instantiation of undefined template}} {{.+}}}}}}
+#endif
+    (void)h;
+}
+
+int main(int, char**) {
+    test<char>();
+    test<wchar_t>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>();
+#endif
+    test<char16_t>();
+    test<char32_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/enabled_hashes.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/enabled_hashes.pass.cpp
new file mode 100644
index 0000000..f79b0d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/enabled_hashes.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// Test that <string> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <string>
+
+#include "constexpr_char_traits.h"
+#include "poisoned_hash_helper.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+struct MyChar {
+  char c;
+};
+
+template <>
+struct std::char_traits<MyChar> {
+  using char_type  = MyChar;
+  using int_type   = std::char_traits<char>::int_type;
+  using off_type   = std::char_traits<char>::off_type;
+  using pos_type   = std::char_traits<char>::pos_type;
+  using state_type = std::char_traits<char>::state_type;
+
+  static void assign(char_type&, const char_type&);
+  static bool eq(char_type, char_type);
+  static bool lt(char_type, char_type);
+
+  static int              compare(const char_type*, const char_type*, size_t);
+  static size_t           length(const char_type*);
+  static const char_type* find(const char_type*, size_t, const char_type&);
+  static char_type*       move(char_type*, const char_type*, size_t);
+  static char_type*       copy(char_type*, const char_type*, size_t);
+  static char_type*       assign(char_type*, size_t, char_type);
+
+  static int_type  not_eof(int_type);
+  static char_type to_char_type(int_type);
+  static int_type  to_int_type(char_type);
+  static bool      eq_int_type(int_type, int_type);
+  static int_type  eof();
+};
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  {
+    test_hash_enabled_for_type<std::string>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_hash_enabled_for_type<std::wstring>();
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+    test_hash_enabled_for_type<std::u8string>();
+#endif
+    test_hash_enabled_for_type<std::u16string>();
+    test_hash_enabled_for_type<std::u32string>();
+    test_hash_enabled_for_type<std::basic_string<char, std::char_traits<char>, test_allocator<char>>>();
+    test_hash_disabled_for_type<std::basic_string<MyChar, std::char_traits<MyChar>, std::allocator<MyChar>>>();
+    test_hash_disabled_for_type<std::basic_string<char, constexpr_char_traits<char>, std::allocator<char>>>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/strings.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/strings.pass.cpp
new file mode 100644
index 0000000..45882a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string.hash/strings.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+// Not very portable
+
+#include <string>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<typename H::argument_type, T>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+
+    H h;
+    std::string g1 = "1234567890";
+    std::string g2 = "1234567891";
+    T s1(g1.begin(), g1.end());
+    T s2(g2.begin(), g2.end());
+    assert(h(s1) != h(s2));
+}
+
+int main(int, char**)
+{
+    test<std::string>();
+#ifndef TEST_HAS_NO_CHAR8_T
+    test<std::u8string>();
+#endif
+    test<std::u16string>();
+    test<std::u32string>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/literal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/literal.pass.cpp
new file mode 100644
index 0000000..56e40fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/literal.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+    typedef std::u8string u8string;
+#else
+    typedef std::string   u8string;
+#endif
+
+int main(int, char**) {
+    {
+        using namespace std::literals::string_literals;
+
+        ASSERT_SAME_TYPE(decltype(  "Hi"s), std::string);
+        ASSERT_SAME_TYPE(decltype(u8"Hi"s), u8string);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        ASSERT_SAME_TYPE(decltype( L"Hi"s), std::wstring);
+#endif
+        ASSERT_SAME_TYPE(decltype( u"Hi"s), std::u16string);
+        ASSERT_SAME_TYPE(decltype( U"Hi"s), std::u32string);
+
+        std::string foo;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        std::wstring Lfoo;
+#endif
+        u8string u8foo;
+        std::u16string ufoo;
+        std::u32string Ufoo;
+
+        foo   =   ""s;     assert(  foo.size() == 0);
+        u8foo = u8""s;     assert(u8foo.size() == 0);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        Lfoo  =  L""s;     assert( Lfoo.size() == 0);
+#endif
+        ufoo  =  u""s;     assert( ufoo.size() == 0);
+        Ufoo  =  U""s;     assert( Ufoo.size() == 0);
+
+        foo   =   " "s;    assert(  foo.size() == 1);
+        u8foo = u8" "s;    assert(u8foo.size() == 1);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        Lfoo  =  L" "s;    assert( Lfoo.size() == 1);
+#endif
+        ufoo  =  u" "s;    assert( ufoo.size() == 1);
+        Ufoo  =  U" "s;    assert( Ufoo.size() == 1);
+
+        foo   =   "ABC"s;     assert(  foo ==   "ABC");   assert(  foo == std::string   (  "ABC"));
+        u8foo = u8"ABC"s;     assert(u8foo == u8"ABC");   assert(u8foo == u8string      (u8"ABC"));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        Lfoo  =  L"ABC"s;     assert( Lfoo ==  L"ABC");   assert( Lfoo == std::wstring  ( L"ABC"));
+#endif
+        ufoo  =  u"ABC"s;     assert( ufoo ==  u"ABC");   assert( ufoo == std::u16string( u"ABC"));
+        Ufoo  =  U"ABC"s;     assert( Ufoo ==  U"ABC");   assert( Ufoo == std::u32string( U"ABC"));
+    }
+    {
+        using namespace std::literals;
+        std::string foo = ""s;
+        assert(foo == std::string());
+    }
+    {
+        using namespace std;
+        std::string foo = ""s;
+        assert(foo == std::string());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/literal.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/literal.verify.cpp
new file mode 100644
index 0000000..9bbc550
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/literal.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <string>
+
+void f() {
+  {
+    using std::string;
+    string foo = ""s; // expected-error {{no matching literal operator}}
+  }
+  {
+    std::string foo = ""s; // expected-error {{no matching literal operator}}
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/noexcept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/noexcept.compile.pass.cpp
new file mode 100644
index 0000000..7f040e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string.literals/noexcept.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <string>
+
+#include "test_macros.h"
+
+static_assert(!noexcept(std::operator""s(std::declval<const char*>(), std::declval<int>())), "");
+#ifndef TEST_HAS_NO_CHAR8_T
+static_assert(!noexcept(std::operator""s(std::declval<const char8_t*>(), std::declval<int>())), "");
+#endif
+static_assert(!noexcept(std::operator""s(std::declval<const char16_t*>(), std::declval<int>())), "");
+static_assert(!noexcept(std::operator""s(std::declval<const char32_t*>(), std::declval<int>())), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!noexcept(std::operator""s(std::declval<const wchar_t*>(), std::declval<int>())), "");
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/allocator_mismatch.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/allocator_mismatch.verify.cpp
new file mode 100644
index 0000000..2c59164
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/allocator_mismatch.verify.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+//   The container's value type must be the same as the allocator's value type
+
+#include <string>
+
+std::basic_string<char, std::char_traits<char>, std::allocator<int> > s; // expected-error@*:* {{Allocator::value_type must be same type as value_type}}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/char.bad.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/char.bad.verify.cpp
new file mode 100644
index 0000000..a93fdc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/char.bad.verify.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+//   ... manipulating sequences of any non-array trivial standard-layout types.
+
+#include <string>
+#include "test_traits.h"
+
+struct NotTrivial {
+    NotTrivial() : value(3) {}
+    int value;
+};
+
+struct NotStandardLayout {
+public:
+    NotStandardLayout() : one(1), two(2) {}
+    int sum() const { return one + two; } // silences "unused field 'two' warning"
+    int one;
+private:
+    int two;
+};
+
+void f() {
+    {
+        // array
+        typedef char C[3];
+        static_assert(std::is_array<C>::value, "");
+        std::basic_string<C, test_traits<C> > s;
+        // expected-error-re@string:* {{{{(static_assert|static assertion)}} failed{{.*}}Character type of basic_string must not be an array}}
+    }
+
+    {
+        // not trivial
+        static_assert(!std::is_trivial<NotTrivial>::value, "");
+        std::basic_string<NotTrivial, test_traits<NotTrivial> > s;
+        // expected-error-re@string:* {{{{(static_assert|static assertion)}} failed{{.*}}Character type of basic_string must be trivial}}
+    }
+
+    {
+        // not standard layout
+        static_assert(!std::is_standard_layout<NotStandardLayout>::value, "");
+        std::basic_string<NotStandardLayout, test_traits<NotStandardLayout> > s;
+        // expected-error-re@string:* {{{{(static_assert|static assertion)}} failed{{.*}}Character type of basic_string must be standard-layout}}
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..46b1936
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// string
+
+#include <string>
+
+#include <concepts>
+#include <ranges>
+
+
+
+static_assert(std::same_as<std::ranges::iterator_t<std::string>, std::string::iterator>);
+static_assert(std::ranges::common_range<std::string>);
+static_assert(std::ranges::random_access_range<std::string>);
+static_assert(std::ranges::contiguous_range<std::string>);
+static_assert(!std::ranges::view<std::string>);
+static_assert(std::ranges::sized_range<std::string>);
+static_assert(!std::ranges::borrowed_range<std::string>);
+static_assert(std::ranges::viewable_range<std::string>);
+
+static_assert(std::same_as<std::ranges::iterator_t<std::string const>, std::string::const_iterator>);
+static_assert(std::ranges::common_range<std::string const>);
+static_assert(std::ranges::random_access_range<std::string const>);
+static_assert(std::ranges::contiguous_range<std::string const>);
+static_assert(!std::ranges::view<std::string const>);
+static_assert(std::ranges::sized_range<std::string const>);
+static_assert(!std::ranges::borrowed_range<std::string const>);
+static_assert(!std::ranges::viewable_range<std::string const>);
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/at.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/at.pass.cpp
new file mode 100644
index 0000000..3e17d07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/at.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const_reference at(size_type pos) const; // constexpr since C++20
+//       reference at(size_type pos); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "min_allocator.h"
+
+#include "make_string.h"
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos)
+{
+    const S& cs = s;
+    if (pos < s.size())
+    {
+        assert(s.at(pos) == s[pos]);
+        assert(cs.at(pos) == cs[pos]);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.at(pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos >= s.size());
+        }
+        try
+        {
+            TEST_IGNORE_NODISCARD cs.at(pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos >= s.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 0);
+  test(S(MAKE_CSTRING(typename S::value_type, "123")), 0);
+  test(S(MAKE_CSTRING(typename S::value_type, "123")), 1);
+  test(S(MAKE_CSTRING(typename S::value_type, "123")), 2);
+  test(S(MAKE_CSTRING(typename S::value_type, "123")), 3);
+}
+
+struct TestCaller {
+  template <class T>
+  TEST_CONSTEXPR_CXX20 void operator()() {
+        test_string<std::basic_string<T> >();
+#if TEST_STD_VER >= 11
+        test_string<std::basic_string<T, std::char_traits<T>, min_allocator<T> > >();
+#endif
+  }
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  meta::for_each(meta::character_types(), TestCaller());
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/back.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/back.pass.cpp
new file mode 100644
index 0000000..9428b08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/back.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const charT& back() const; // constexpr since C++20
+//       charT& back(); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    const S& cs = s;
+    ASSERT_SAME_TYPE(decltype( s.back()), typename S::reference);
+    ASSERT_SAME_TYPE(decltype(cs.back()), typename S::const_reference);
+    LIBCPP_ASSERT_NOEXCEPT(    s.back());
+    LIBCPP_ASSERT_NOEXCEPT(   cs.back());
+    assert(&cs.back() == &cs[cs.size()-1]);
+    assert(&s.back() == &s[cs.size()-1]);
+    s.back() = typename S::value_type('z');
+    assert(s.back() == typename S::value_type('z'));
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S("1"));
+  test(S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/front.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/front.pass.cpp
new file mode 100644
index 0000000..e389d33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/front.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const charT& front() const; // constexpr since C++20
+//       charT& front(); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    const S& cs = s;
+    ASSERT_SAME_TYPE(decltype( s.front()), typename S::reference);
+    ASSERT_SAME_TYPE(decltype(cs.front()), typename S::const_reference);
+    LIBCPP_ASSERT_NOEXCEPT(    s.front());
+    LIBCPP_ASSERT_NOEXCEPT(   cs.front());
+    assert(&cs.front() == &cs[0]);
+    assert(&s.front() == &s[0]);
+    s.front() = typename S::value_type('z');
+    assert(s.front() == typename S::value_type('z'));
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S("1"));
+  test(S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/index.pass.cpp
new file mode 100644
index 0000000..3fe9324
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.access/index.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const_reference operator[](size_type pos) const; // constexpr since C++20
+//       reference operator[](size_type pos); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  S s("0123456789");
+  const S& cs = s;
+  ASSERT_SAME_TYPE(decltype( s[0]), typename S::reference);
+  ASSERT_SAME_TYPE(decltype(cs[0]), typename S::const_reference);
+  LIBCPP_ASSERT_NOEXCEPT(    s[0]);
+  LIBCPP_ASSERT_NOEXCEPT(   cs[0]);
+  for (typename S::size_type i = 0; i < cs.size(); ++i)
+  {
+      assert(s[i] == static_cast<char>('0' + i));
+      assert(cs[i] == s[i]);
+  }
+  assert(cs[cs.size()] == '\0');
+  const S s2 = S();
+  assert(s2[0] == '\0');
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp
new file mode 100644
index 0000000..a32b8aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type capacity() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+#include "test_macros.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, test_allocator_statistics& alloc_stats)
+{
+    alloc_stats.throw_after = 0;
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+#endif
+    {
+        while (s.size() < s.capacity())
+            s.push_back(typename S::value_type());
+        assert(s.size() == s.capacity());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    catch (...)
+    {
+        assert(false);
+    }
+#endif
+    alloc_stats.throw_after = INT_MAX;
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    test_allocator_statistics alloc_stats;
+    typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > S;
+    S s((test_allocator<char>(&alloc_stats)));
+    test(s, alloc_stats);
+    s.assign(10, 'a');
+    s.erase(5);
+    test(s, alloc_stats);
+    s.assign(100, 'a');
+    s.erase(50);
+    test(s, alloc_stats);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s;
+    assert(s.capacity() > 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/clear.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/clear.pass.cpp
new file mode 100644
index 0000000..24191a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/clear.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void clear(); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    s.clear();
+    assert(s.size() == 0);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  S s;
+  test(s);
+
+  s.assign(10, 'a');
+  s.erase(5);
+  test(s);
+
+  s.assign(100, 'a');
+  s.erase(50);
+  test(s);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/empty.pass.cpp
new file mode 100644
index 0000000..578f068
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/empty.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// bool empty() const noexcept; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    ASSERT_NOEXCEPT(s.empty());
+    assert(s.empty() == (s.size() == 0));
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S());
+  test(S("123"));
+  test(S("12345678901234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/empty.verify.cpp
new file mode 100644
index 0000000..26a4daf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/empty.verify.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// class deque
+
+// bool empty() const noexcept; // constexpr since C++20
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <string>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::string c;
+  c.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/length.pass.cpp
new file mode 100644
index 0000000..9ef4884
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/length.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type length() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    assert(s.length() == s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S());
+  test(S("123"));
+  test(S("12345678901234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp
new file mode 100644
index 0000000..b8e4198
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/max_size.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <string>
+
+// size_type max_size() const; // constexpr since C++20
+
+// NOTE: asan and msan will fail for one of two reasons
+// 1. If allocator_may_return_null=0 then they will fail because the allocation
+//    returns null.
+// 2. If allocator_may_return_null=1 then they will fail because the allocation
+//    is too large to succeed.
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <string>
+#include <cassert>
+#include <new>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test1(const S& s)
+{
+    S s2(s);
+    const size_t sz = s2.max_size() - 1;
+    try { s2.resize(sz, 'x'); }
+    catch ( const std::bad_alloc & ) { return ; }
+    assert ( s2.size() ==  sz );
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test2(const S& s)
+{
+    S s2(s);
+    const size_t sz = s2.max_size();
+    try { s2.resize(sz, 'x'); }
+    catch ( const std::bad_alloc & ) { return ; }
+    assert ( s.size() ==  sz );
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    assert(s.max_size() >= s.size());
+    test1(s);
+    test2(s);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S());
+  test(S("123"));
+  test(S("12345678901234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+#if TEST_STD_VER > 17
+constexpr bool test_constexpr() {
+  std::string str;
+
+  size_t size = str.max_size();
+  assert(size > 0);
+
+  return true;
+}
+#endif
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  test_constexpr();
+  static_assert(test_constexpr());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/over_max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/over_max_size.pass.cpp
new file mode 100644
index 0000000..65907e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/over_max_size.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// Prior to http://llvm.org/D123580, there was a bug with how the max_size()
+// was calculated. That was inlined into some functions in the dylib, which leads
+// to failures when running this test against an older system dylib.
+// XFAIL: use_system_cxx_lib && target=arm64-apple-macosx{{11.0|12.0}}
+
+// <string>
+
+// size_type max_size() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+void
+test(const S& s)
+{
+    assert(s.max_size() >= s.size());
+    S s2(s);
+    const size_t sz = s2.max_size() + 1;
+    try { s2.resize(sz, 'x'); }
+    catch ( const std::length_error & ) { return ; }
+    assert ( false );
+}
+
+template <class S>
+void test_string() {
+  test(S());
+  test(S("123"));
+  test(S("12345678901234567890123456789012345678901234567890"));
+}
+
+bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve.deprecated_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve.deprecated_in_cxx20.verify.cpp
new file mode 100644
index 0000000..1b8a5da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve.deprecated_in_cxx20.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void reserve(); // Deprecated in C++20
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <string>
+
+int main(int, char**)
+{
+    std::string s;
+    s.reserve(); // expected-warning {{'reserve' is deprecated}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp
new file mode 100644
index 0000000..840fd14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void reserve(); // Deprecated in C++20.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+void
+test(typename S::size_type min_cap, typename S::size_type erased_index)
+{
+    S s(min_cap, 'a');
+    s.erase(erased_index);
+    assert(s.size() == erased_index);
+    assert(s.capacity() >= min_cap); // Check that we really have at least this capacity.
+
+    typename S::size_type old_cap = s.capacity();
+    S s0 = s;
+    s.reserve();
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == s0);
+    assert(s.capacity() <= old_cap);
+    assert(s.capacity() >= s.size());
+}
+
+template <class S>
+void test_string() {
+  test<S>(0, 0);
+  test<S>(10, 5);
+  test<S>(100, 50);
+}
+
+bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve_size.pass.cpp
new file mode 100644
index 0000000..2999114
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/reserve_size.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void reserve(size_type res_arg); // constexpr since C++20
+
+// This test relies on https://llvm.org/PR45368 being fixed, which isn't in
+// older Apple dylibs
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(typename S::size_type min_cap, typename S::size_type erased_index, typename S::size_type res_arg)
+{
+    S s(min_cap, 'a');
+    s.erase(erased_index);
+    assert(s.size() == erased_index);
+    assert(s.capacity() >= min_cap); // Check that we really have at least this capacity.
+
+#if TEST_STD_VER > 17
+    typename S::size_type old_cap = s.capacity();
+#endif
+    S s0 = s;
+    if (res_arg <= s.max_size())
+    {
+        s.reserve(res_arg);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == s0);
+        assert(s.capacity() >= res_arg);
+        assert(s.capacity() >= s.size());
+#if TEST_STD_VER > 17
+        assert(s.capacity() >= old_cap); // reserve never shrinks as of P0966 (C++20)
+#endif
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.reserve(res_arg);
+            LIBCPP_ASSERT(s.__invariants());
+            assert(false);
+        }
+        catch (std::length_error&)
+        {
+            assert(res_arg > s.max_size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  {
+    test<S>(0, 0, 5);
+    test<S>(0, 0, 10);
+    test<S>(0, 0, 50);
+  }
+  {
+    test<S>(100, 50, 5);
+    test<S>(100, 50, 10);
+    test<S>(100, 50, 50);
+    test<S>(100, 50, 100);
+    test<S>(100, 50, 1000);
+    test<S>(100, 50, S::npos);
+  }
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_and_overwrite.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_and_overwrite.pass.cpp
new file mode 100644
index 0000000..b22a903
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_and_overwrite.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// template<class Operation>
+// void resize_and_overwrite(size_type n, Operation op)
+
+#include <algorithm>
+#include <cassert>
+#include <string>
+
+#include "make_string.h"
+#include "test_macros.h"
+
+template <class S>
+constexpr void test_appending(size_t k, size_t N, size_t new_capacity) {
+  assert(N > k);
+  assert(new_capacity >= N);
+  auto s = S(k, 'a');
+  s.resize_and_overwrite(new_capacity, [&](auto* p, auto n) {
+    assert(n == new_capacity);
+    LIBCPP_ASSERT(s.size() == new_capacity);
+    LIBCPP_ASSERT(s.begin().base() == p);
+    assert(std::all_of(p, p + k, [](const auto ch) { return ch == 'a'; }));
+    std::fill(p + k, p + n, 'b');
+    p[n] = 'c'; // will be overwritten
+    return N;
+  });
+  const S expected = S(k, 'a') + S(N - k, 'b');
+  assert(s == expected);
+  assert(s.c_str()[N] == '\0');
+}
+
+template <class S>
+constexpr void test_truncating(size_t o, size_t N) {
+  assert(N < o);
+  auto s = S(o, 'a');
+  s.resize_and_overwrite(N, [&](auto* p, auto n) {
+    assert(n == N);
+    LIBCPP_ASSERT(s.size() == n);
+    LIBCPP_ASSERT(s.begin().base() == p);
+    assert(std::all_of(p, p + n, [](auto ch) { return ch == 'a'; }));
+    p[n - 1] = 'b';
+    p[n] = 'c'; // will be overwritten
+    return n;
+  });
+  const S expected = S(N - 1, 'a') + S(1, 'b');
+  assert(s == expected);
+  assert(s.c_str()[N] == '\0');
+}
+
+template <class CharT>
+constexpr bool test() {
+  using S = std::basic_string<CharT>;
+  test_appending<S>(10, 15, 15);
+  test_appending<S>(10, 15, 20);
+  test_appending<S>(10, 40, 40);
+  test_appending<S>(10, 40, 50);
+  test_appending<S>(30, 35, 35);
+  test_appending<S>(30, 35, 45);
+  test_appending<S>(10, 15, 30);
+  test_truncating<S>(15, 10);
+  test_truncating<S>(40, 35);
+  test_truncating<S>(40, 10);
+
+  return true;
+}
+
+void test_value_categories() {
+  std::string s;
+  s.resize_and_overwrite(10, [](char*&&, size_t&&) { return 0; });
+  s.resize_and_overwrite(10, [](char* const&, const size_t&) { return 0; });
+  struct RefQualified {
+    int operator()(char*, size_t) && { return 0; }
+  };
+  s.resize_and_overwrite(10, RefQualified{});
+}
+
+int main(int, char**) {
+  test<char>();
+  test<char8_t>();
+  test<char16_t>();
+  test<char32_t>();
+
+  static_assert(test<char>());
+  static_assert(test<char8_t>());
+  static_assert(test<char16_t>());
+  static_assert(test<char32_t>());
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+  static_assert(test<wchar_t>());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_size.pass.cpp
new file mode 100644
index 0000000..16e1323
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_size.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void resize(size_type n); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type n, S expected)
+{
+    if (n <= s.max_size())
+    {
+        s.resize(n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.resize(n);
+            assert(false);
+        }
+        catch (std::length_error&)
+        {
+            assert(n > s.max_size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 0, S());
+  test(S(), 1, S(1, '\0'));
+  test(S(), 10, S(10, '\0'));
+  test(S(), 100, S(100, '\0'));
+  test(S("12345"), 0, S());
+  test(S("12345"), 2, S("12"));
+  test(S("12345"), 5, S("12345"));
+  test(S("12345"), 15, S("12345\0\0\0\0\0\0\0\0\0\0", 15));
+  test(S("12345678901234567890123456789012345678901234567890"), 0, S());
+  test(S("12345678901234567890123456789012345678901234567890"), 10,
+        S("1234567890"));
+  test(S("12345678901234567890123456789012345678901234567890"), 50,
+        S("12345678901234567890123456789012345678901234567890"));
+  test(S("12345678901234567890123456789012345678901234567890"), 60,
+        S("12345678901234567890123456789012345678901234567890\0\0\0\0\0\0\0\0\0\0", 60));
+  test(S(), S::npos, S("not going to happen"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_size_char.pass.cpp
new file mode 100644
index 0000000..c35ffc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/resize_size_char.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void resize(size_type n, charT c); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type n, typename S::value_type c, S expected)
+{
+    if (n <= s.max_size())
+    {
+        s.resize(n, c);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.resize(n, c);
+            assert(false);
+        }
+        catch (std::length_error&)
+        {
+            assert(n > s.max_size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 0, 'a', S());
+  test(S(), 1, 'a', S("a"));
+  test(S(), 10, 'a', S(10, 'a'));
+  test(S(), 100, 'a', S(100, 'a'));
+  test(S("12345"), 0, 'a', S());
+  test(S("12345"), 2, 'a', S("12"));
+  test(S("12345"), 5, 'a', S("12345"));
+  test(S("12345"), 15, 'a', S("12345aaaaaaaaaa"));
+  test(S("12345678901234567890123456789012345678901234567890"), 0, 'a', S());
+  test(S("12345678901234567890123456789012345678901234567890"), 10, 'a',
+        S("1234567890"));
+  test(S("12345678901234567890123456789012345678901234567890"), 50, 'a',
+        S("12345678901234567890123456789012345678901234567890"));
+  test(S("12345678901234567890123456789012345678901234567890"), 60, 'a',
+        S("12345678901234567890123456789012345678901234567890aaaaaaaaaa"));
+  test(S(), S::npos, 'a', S("not going to happen"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.explicit_instantiation.sh.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.explicit_instantiation.sh.cpp
new file mode 100644
index 0000000..195491f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.explicit_instantiation.sh.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test checks that we can explicitly instantiate std::string with a custom
+// character type and traits and then use `shrink_to_fit`. In particular, this is
+// a regression test for the bug that was reported at https://stackoverflow.com/q/69520633/627587
+// and https://seedcentral.apple.com/sm/feedback_collector/radar/85053279.
+
+// RUN: %{cxx} %{flags} %{compile_flags} %s %{link_flags} -DTU1 -c -o %t.tu1.o
+// RUN: %{cxx} %{flags} %{compile_flags} %s %{link_flags} -DTU2 -c -o %t.tu2.o
+// RUN: %{cxx} %{flags} %t.tu1.o %t.tu2.o %{link_flags} -o %t.exe
+
+// UNSUPPORTED: no-localization
+
+#include <cstdint>
+#include <ios>
+#include <string>
+
+typedef std::uint16_t char16;
+
+struct string16_char_traits {
+  typedef char16 char_type;
+  typedef int int_type;
+
+  typedef std::streamoff off_type;
+  typedef std::mbstate_t state_type;
+  typedef std::fpos<state_type> pos_type;
+
+  static void assign(char_type&, const char_type&) { }
+  static bool eq(const char_type&, const char_type&) { return false; }
+  static bool lt(const char_type&, const char_type&) { return false; }
+  static int compare(const char_type*, const char_type*, size_t) { return 0; }
+  static size_t length(const char_type*) { return 0; }
+  static const char_type* find(const char_type*, size_t, const char_type&) { return nullptr; }
+  static char_type* move(char_type*, const char_type*, size_t) { return nullptr; }
+  static char_type* copy(char_type*, const char_type*, size_t) { return nullptr; }
+  static char_type* assign(char_type*, size_t, char_type) { return nullptr; }
+  static int_type not_eof(const int_type&) { return 0; }
+  static char_type to_char_type(const int_type&) { return char_type(); }
+  static int_type to_int_type(const char_type&) { return int_type(); }
+  static bool eq_int_type(const int_type&, const int_type&) { return false; }
+  static int_type eof() { return int_type(); }
+};
+
+#if defined(TU1)
+template class std::basic_string<char16, string16_char_traits>;
+#else
+extern template class std::basic_string<char16, string16_char_traits>;
+
+int main(int, char**) {
+    std::basic_string<char16, string16_char_traits> s;
+    s.shrink_to_fit();
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.pass.cpp
new file mode 100644
index 0000000..376182e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/shrink_to_fit.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void shrink_to_fit(); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    typename S::size_type old_cap = s.capacity();
+    S s0 = s;
+    s.shrink_to_fit();
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == s0);
+    assert(s.capacity() <= old_cap);
+    assert(s.capacity() >= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  S s;
+  test(s);
+
+  s.assign(10, 'a');
+  s.erase(5);
+  test(s);
+
+  s.assign(100, 'a');
+  s.erase(50);
+  test(s);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/size.pass.cpp
new file mode 100644
index 0000000..05d7748
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.capacity/size.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type size() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type c)
+{
+    assert(s.size() == c);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 0);
+  test(S("123"), 3);
+  test(S("12345678901234567890123456789012345678901234567890"), 50);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/T_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/T_size_size.pass.cpp
new file mode 100644
index 0000000..0021684
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/T_size_size.pass.cpp
@@ -0,0 +1,196 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class _Tp>
+//   basic_string(const _Tp& __t, size_type __pos, size_type __n,
+//                const allocator_type& __a = allocator_type()); // constexpr since C++20
+//
+//  Mostly we're testing string_view here
+
+#include <string>
+#include <string_view>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV sv, std::size_t pos, std::size_t n)
+{
+    typedef typename S::traits_type T;
+    typedef typename S::allocator_type A;
+    typedef typename S::size_type Size;
+    if (pos <= sv.size())
+    {
+        S s2(sv, static_cast<Size>(pos), static_cast<Size>(n));
+        LIBCPP_ASSERT(s2.__invariants());
+        assert(pos <= sv.size());
+        std::size_t rlen = std::min(sv.size() - pos, n);
+        assert(s2.size() == rlen);
+        assert(T::compare(s2.data(), sv.data() + pos, rlen) == 0);
+        assert(s2.get_allocator() == A());
+        assert(s2.capacity() >= s2.size());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            S s2(sv, static_cast<Size>(pos), static_cast<Size>(n));
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV sv, std::size_t pos, std::size_t n, const typename S::allocator_type& a)
+{
+    typedef typename S::traits_type T;
+    typedef typename S::size_type Size;
+    if (pos <= sv.size())
+    {
+        S s2(sv, static_cast<Size>(pos), static_cast<Size>(n), a);
+        LIBCPP_ASSERT(s2.__invariants());
+        assert(pos <= sv.size());
+        std::size_t rlen = std::min(sv.size() - pos, n);
+        assert(s2.size() == rlen);
+        assert(T::compare(s2.data(), sv.data() + pos, rlen) == 0);
+        assert(s2.get_allocator() == a);
+        assert(s2.capacity() >= s2.size());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            S s2(sv, static_cast<Size>(pos), static_cast<Size>(n), a);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > sv.size());
+        }
+    }
+#endif
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string_view<char, std::char_traits<char> > SV;
+    typedef std::basic_string     <char, std::char_traits<char>, A> S;
+
+    test<S,SV>(SV(), 0, 0);
+    test<S,SV>(SV(), 0, 1);
+    test<S,SV>(SV(), 1, 0);
+    test<S,SV>(SV(), 1, 1);
+    test<S,SV>(SV(), 1, 2);
+    test<S,SV>(SV("1"), 0, 0);
+    test<S,SV>(SV("1"), 0, 1);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50,   0);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50,   1);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50,  10);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 100);
+
+    test<S,SV>(SV(), 0, 0, A(4));
+    test<S,SV>(SV(), 0, 1, A(4));
+    test<S,SV>(SV(), 1, 0, A(4));
+    test<S,SV>(SV(), 1, 1, A(4));
+    test<S,SV>(SV(), 1, 2, A(4));
+    test<S,SV>(SV("1"), 0, 0, A(6));
+    test<S,SV>(SV("1"), 0, 1, A(6));
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50,   0, A(8));
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50,   1, A(8));
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50,  10, A(8));
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 100, A(8));
+  }
+
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string_view<char, std::char_traits<char> > SV;
+    typedef std::basic_string     <char, std::char_traits<char>, A> S;
+
+    test<S,SV>(SV(), 0, 0);
+    test<S,SV>(SV(), 0, 1);
+    test<S,SV>(SV(), 1, 0);
+    test<S,SV>(SV(), 1, 1);
+    test<S,SV>(SV(), 1, 2);
+    test<S,SV>(SV("1"), 0, 0);
+    test<S,SV>(SV("1"), 0, 1);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 0);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 1);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 10);
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 100);
+
+    test<S,SV>(SV(), 0, 0, A());
+    test<S,SV>(SV(), 0, 1, A());
+    test<S,SV>(SV(), 1, 0, A());
+    test<S,SV>(SV(), 1, 1, A());
+    test<S,SV>(SV(), 1, 2, A());
+    test<S,SV>(SV("1"), 0, 0, A());
+    test<S,SV>(SV("1"), 0, 1, A());
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 0, A());
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 1, A());
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 10, A());
+    test<S,SV>(SV("1234567890123456789012345678901234567890123456789012345678901234567890"), 50, 100, A());
+  }
+#endif
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    S s = "ABCD";
+    SV sv = "EFGH";
+    char arr[] = "IJKL";
+
+    S s1("CDEF", 4);    // calls ctor(const char *, len)
+    assert(s1 == "CDEF");
+
+    S s2("QRST", 0, 3); // calls ctor(string("QRST", pos, len)
+    assert(s2 == "QRS");
+
+    S s3(sv, 0, std::string::npos);   // calls ctor(T, pos, npos)
+    assert(s3 == sv);
+
+    S s4(sv, 0, 3);   // calls ctor(T, pos, len)
+    assert(s4 == "EFG");
+
+    S s5(arr, 0, 2);     // calls ctor(const char *, len)
+    assert(s5 == "IJ");
+
+    S s6(arr, 0);     // calls ctor(const char *, len)
+    assert(s6 == "");
+
+    S s7(s.data(), 2);     // calls ctor(const char *, len)
+    assert(s7 == "AB");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/alloc.pass.cpp
new file mode 100644
index 0000000..add77f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/alloc.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// explicit basic_string(const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test()
+{
+    {
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S()) == noexcept(typename S::allocator_type())), "" );
+#endif
+    S s;
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s.data());
+    assert(s.size() == 0);
+    assert(s.capacity() >= s.size());
+    assert(s.get_allocator() == typename S::allocator_type());
+    }
+    {
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{typename S::allocator_type{}})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S(typename S::allocator_type())) == std::is_nothrow_copy_constructible<typename S::allocator_type>::value), "" );
+#endif
+    S s(typename S::allocator_type(5));
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s.data());
+    assert(s.size() == 0);
+    assert(s.capacity() >= s.size());
+    assert(s.get_allocator() == typename S::allocator_type(5));
+    }
+}
+
+#if TEST_STD_VER >= 11
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test2()
+{
+    {
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S()) == noexcept(typename S::allocator_type())), "" );
+#endif
+    S s;
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s.data());
+    assert(s.size() == 0);
+    assert(s.capacity() >= s.size());
+    assert(s.get_allocator() == typename S::allocator_type());
+    }
+    {
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{typename S::allocator_type{}})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S(typename S::allocator_type())) == std::is_nothrow_copy_constructible<typename S::allocator_type>::value), "" );
+#endif
+    S s(typename S::allocator_type{});
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s.data());
+    assert(s.size() == 0);
+    assert(s.capacity() >= s.size());
+    assert(s.get_allocator() == typename S::allocator_type());
+    }
+}
+
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test<std::basic_string<char, std::char_traits<char>, test_allocator<char> > >();
+#if TEST_STD_VER >= 11
+  test2<std::basic_string<char, std::char_traits<char>, min_allocator<char> > >();
+  test2<std::basic_string<char, std::char_traits<char>, explicit_allocator<char> > >();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/brace_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/brace_assignment.pass.cpp
new file mode 100644
index 0000000..6c676b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/brace_assignment.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   operator=(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  // Test that assignment from {} and {ptr, len} are allowed and are not
+  // ambiguous.
+  {
+    std::string s = "hello world";
+    s = {};
+    assert(s.empty());
+  }
+  {
+    std::string s = "hello world";
+    s = {"abc", 2};
+    assert(s == "ab");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/char_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/char_assignment.pass.cpp
new file mode 100644
index 0000000..38130b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/char_assignment.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>& operator=(charT c); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, typename S::value_type s2)
+{
+    typedef typename S::traits_type T;
+    s1 = s2;
+    LIBCPP_ASSERT(s1.__invariants());
+    assert(s1.size() == 1);
+    assert(T::eq(s1[0], s2));
+    assert(s1.capacity() >= s1.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 'a');
+  test(S("1"), 'a');
+  test(S("123456789"), 'a');
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a');
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy.pass.cpp
new file mode 100644
index 0000000..6ce2b12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(const basic_string<charT,traits,Allocator>& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1)
+{
+    S s2 = s1;
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2 == s1);
+    assert(s2.capacity() >= s2.size());
+    assert(s2.get_allocator() == s1.get_allocator());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(A(3)));
+    test(S("1", A(5)));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(A{}));
+    test(S("1", A()));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy_alloc.pass.cpp
new file mode 100644
index 0000000..9d6c162
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy_alloc.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(const basic_string& str, const Allocator& alloc); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct alloc_imp {
+    bool active;
+
+    TEST_CONSTEXPR alloc_imp() : active(true) {}
+
+    template <class T>
+    T* allocate(std::size_t n)
+    {
+        if (active)
+            return static_cast<T*>(std::malloc(n * sizeof(T)));
+        else
+            throw std::bad_alloc();
+    }
+
+    template <class T>
+    void deallocate(T* p, std::size_t) { std::free(p); }
+    void activate  ()                  { active = true; }
+    void deactivate()                  { active = false; }
+};
+
+template <class T>
+struct poca_alloc {
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_copy_assignment;
+
+    alloc_imp *imp;
+
+    TEST_CONSTEXPR poca_alloc(alloc_imp *imp_) : imp (imp_) {}
+
+    template <class U>
+    TEST_CONSTEXPR poca_alloc(const poca_alloc<U>& other) : imp(other.imp) {}
+
+    T*   allocate  (std::size_t n)       { return imp->allocate<T>(n);}
+    void deallocate(T* p, std::size_t n) { imp->deallocate(p, n); }
+};
+
+template <typename T, typename U>
+bool operator==(const poca_alloc<T>& lhs, const poca_alloc<U>& rhs)
+{
+    return lhs.imp == rhs.imp;
+}
+
+template <typename T, typename U>
+bool operator!=(const poca_alloc<T>& lhs, const poca_alloc<U>& rhs)
+{
+    return lhs.imp != rhs.imp;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_assign(S &s1, const S& s2)
+{
+    try { s1 = s2; }
+    catch ( std::bad_alloc &) { return; }
+    assert(false);
+}
+#endif
+
+
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, const typename S::allocator_type& a)
+{
+    S s2(s1, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2 == s1);
+    assert(s2.capacity() >= s2.size());
+    assert(s2.get_allocator() == a);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(), A(3));
+    test(S("1"), A(5));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(), A());
+    test(S("1"), A());
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
+  }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    typedef poca_alloc<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    const char * p1 = "This is my first string";
+    const char * p2 = "This is my second string";
+
+    alloc_imp imp1;
+    alloc_imp imp2;
+    S s1(p1, A(&imp1));
+    S s2(p2, A(&imp2));
+
+    assert(s1 == p1);
+    assert(s2 == p2);
+
+    imp2.deactivate();
+    test_assign(s1, s2);
+    assert(s1 == p1);
+    assert(s2 == p2);
+  }
+#endif
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp
new file mode 100644
index 0000000..3b925d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/copy_assignment.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   operator=(const basic_string<charT,traits,Allocator>& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, const S& s2)
+{
+    s1 = s2;
+    LIBCPP_ASSERT(s1.__invariants());
+    assert(s1 == s2);
+    assert(s1.capacity() >= s1.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S());
+  test(S("1"), S());
+  test(S(), S("1"));
+  test(S("1"), S("2"));
+  test(S("1"), S("2"));
+
+  test(S(),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("123456789"),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
+          "1234567890123456789012345678901234567890123456789012345678901234567890"),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#if TEST_STD_VER >= 11
+  {   // LWG 2946
+    std::string s;
+    s = {"abc", 1};
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp
new file mode 100644
index 0000000..beb16c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/default.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string() noexcept(is_nothrow_default_constructible<allocator_type>::value); // constexpr since C++20
+
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+#if TEST_STD_VER >= 11
+// Test the noexcept specification, which is a conforming extension
+LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<std::string>::value, "");
+LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<
+                     std::basic_string<char, std::char_traits<char>, test_allocator<char>>>::value, "");
+LIBCPP_STATIC_ASSERT(!std::is_nothrow_default_constructible<
+                     std::basic_string<char, std::char_traits<char>, limited_allocator<char, 10>>>::value, "");
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::string str;
+  assert(str.empty());
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/dtor.pass.cpp
new file mode 100644
index 0000000..07e9a60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/dtor.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// ~basic_string() // implied noexcept; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct throwing_alloc
+{
+    typedef T value_type;
+    throwing_alloc(const throwing_alloc&);
+    T *allocate(size_t);
+    ~throwing_alloc() noexcept(false);
+};
+
+// Test that it's possible to take the address of basic_string's destructors
+// by creating globals which will register their destructors with cxa_atexit.
+std::string unused_string;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+std::wstring unused_wide_string;
+#endif
+
+static_assert(std::is_nothrow_destructible<std::string>::value, "");
+static_assert(std::is_nothrow_destructible<
+                std::basic_string<char, std::char_traits<char>, test_allocator<char>>>::value, "");
+LIBCPP_STATIC_ASSERT(!std::is_nothrow_destructible<
+                     std::basic_string<char, std::char_traits<char>, throwing_alloc<char>>>::value, "");
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_allocator_statistics alloc_stats;
+  {
+    std::basic_string<char, std::char_traits<char>, test_allocator<char>> str2((test_allocator<char>(&alloc_stats)));
+    str2 = "long long string so no SSO";
+    assert(alloc_stats.alloc_count > 0);
+    LIBCPP_ASSERT(alloc_stats.alloc_count == 1);
+  }
+  assert(alloc_stats.alloc_count == 0);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp
new file mode 100644
index 0000000..f9cdeac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/implicit_deduction_guides.pass.cpp
@@ -0,0 +1,379 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <string>
+
+// Test that the constructors offered by std::basic_string are formulated
+// so they're compatible with implicit deduction guides.
+
+#include <string>
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "test_iterators.h"
+#include "constexpr_char_traits.h"
+
+template <class T, class Alloc = std::allocator<T>>
+using BStr = std::basic_string<T, std::char_traits<T>, Alloc>;
+
+// Overloads
+//  using A = Allocator;
+//  using BS = basic_string
+//  using BSV = basic_string_view
+// ---------------
+// (1)  basic_string() - NOT TESTED
+// (2)  basic_string(A const&) - BROKEN
+// (3)  basic_string(size_type, CharT, const A& = A())
+// (4)  basic_string(BS const&, size_type, A const& = A())
+// (5)  basic_string(BS const&, size_type, size_type, A const& = A())
+// (6)  basic_string(const CharT*, size_type, A const& = A())
+// (7)  basic_string(const CharT*, A const& = A())
+// (8)  basic_string(InputIt, InputIt, A const& = A()) - BROKEN
+// (9)  basic_string(BS const&)
+// (10) basic_string(BS const&, A const&)
+// (11) basic_string(BS&&)
+// (12) basic_string(BS&&, A const&)
+// (13) basic_string(initializer_list<CharT>, A const& = A())
+// (14) basic_string(BSV, A const& = A())
+// (15) basic_string(const T&, size_type, size_type, A const& = A())
+TEST_CONSTEXPR_CXX20 bool test() {
+
+  using TestSizeT = test_allocator<char>::size_type;
+  { // Testing (1)
+    // Nothing to do. Cannot deduce without any arguments.
+  }
+  { // Testing (2)
+    // This overload isn't compatible with implicit deduction guides as
+    // specified in the standard.
+    // const test_allocator<char> alloc{};
+    // std::basic_string s(alloc);
+  }
+  { // Testing (3) w/o allocator
+    std::basic_string s(6ull, 'a');
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "aaaaaa");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string w(2ull, L'b');
+    ASSERT_SAME_TYPE(decltype(w), std::wstring);
+    assert(w == L"bb");
+#endif
+  }
+  { // Testing (3) w/ allocator
+    std::basic_string s(6ull, 'a', test_allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), BStr<char,test_allocator<char>>);
+    assert(s == "aaaaaa");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string w(2ull, L'b', test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), BStr<wchar_t, test_allocator<wchar_t>>);
+    assert(w == L"bb");
+#endif
+  }
+  { // Testing (4) w/o allocator
+    const std::string sin("abc");
+    std::basic_string s(sin, (size_t)1);
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "bc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    const WStr win(L"abcdef");
+    std::basic_string w(win, (TestSizeT)3);
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"def");
+#endif
+  }
+  { // Testing (4) w/ allocator
+    const std::string sin("abc");
+    std::basic_string s(sin, (size_t)1, std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "bc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    const WStr win(L"abcdef");
+    std::basic_string w(win, (TestSizeT)3, test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"def");
+#endif
+  }
+  { // Testing (5) w/o allocator
+    const std::string sin("abc");
+    std::basic_string s(sin, (size_t)1, (size_t)3);
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "bc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    const WStr win(L"abcdef");
+    std::basic_string w(win, (TestSizeT)2, (TestSizeT)3);
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"cde");
+#endif
+  }
+  { // Testing (5) w/ allocator
+    const std::string sin("abc");
+    std::basic_string s(sin, (size_t)1, (size_t)3, std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "bc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    const WStr win(L"abcdef");
+    std::basic_string w(win, (TestSizeT)2, (TestSizeT)3, test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"cde");
+#endif
+  }
+  { // Testing (6) w/o allocator
+    std::basic_string s("abc", (size_t)2);
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "ab");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string w(L"abcdef", (size_t)3);
+    ASSERT_SAME_TYPE(decltype(w), std::wstring);
+    assert(w == L"abc");
+#endif
+  }
+  { // Testing (6) w/ allocator
+    std::basic_string s("abc", (size_t)2, std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "ab");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  std::char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    std::basic_string w(L"abcdef", (TestSizeT)3, test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"abc");
+#endif
+  }
+  { // Testing (7) w/o allocator
+    std::basic_string s("abc");
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string w(L"abcdef");
+    ASSERT_SAME_TYPE(decltype(w), std::wstring);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (7) w/ allocator
+    std::basic_string s("abc", std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  std::char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    std::basic_string w(L"abcdef", test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // (8) w/o allocator
+    using It = cpp17_input_iterator<const char*>;
+    const char* input = "abcdef";
+    std::basic_string s(It(input), It(input + 3), std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+  }
+  { // (8) w/ allocator
+    {
+      using Expect = std::basic_string<char, std::char_traits<char>, test_allocator<char>>;
+      using It = cpp17_input_iterator<const char*>;
+      const char* input = "abcdef";
+      std::basic_string s(It(input), It(input + 3), test_allocator<char>{});
+      ASSERT_SAME_TYPE(decltype(s), Expect);
+      assert(s == "abc");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+      using ExpectW = std::basic_string<wchar_t, std::char_traits<wchar_t>, test_allocator<wchar_t>>;
+      using It = cpp17_input_iterator<const wchar_t*>;
+      const wchar_t* input = L"abcdef";
+      std::basic_string s(It(input), It(input + 3), test_allocator<wchar_t>{});
+      ASSERT_SAME_TYPE(decltype(s), ExpectW);
+      assert(s == L"abc");
+    }
+#endif
+  }
+  { // Testing (9)
+    const std::string sin("abc");
+    std::basic_string s(sin);
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    const WStr win(L"abcdef");
+    std::basic_string w(win);
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (10)
+    const std::string sin("abc");
+    std::basic_string s(sin, std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    const WStr win(L"abcdef");
+    std::basic_string w(win, test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (11)
+    std::string sin("abc");
+    std::basic_string s(std::move(sin));
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    WStr win(L"abcdef");
+    std::basic_string w(std::move(win));
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (12)
+    std::string sin("abc");
+    std::basic_string s(std::move(sin), std::allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WStr = std::basic_string<wchar_t,
+                                  constexpr_char_traits<wchar_t>,
+                                  test_allocator<wchar_t>>;
+    WStr win(L"abcdef");
+    std::basic_string w(std::move(win), test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), WStr);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (13) w/o allocator
+    std::basic_string s({'a', 'b', 'c'});
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string w({L'a', L'b', L'c'});
+    ASSERT_SAME_TYPE(decltype(w), std::wstring);
+    assert(w == L"abc");
+#endif
+  }
+  { // Testing (13) w/ allocator
+    std::basic_string s({'a', 'b', 'c'}, test_allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), BStr<char, test_allocator<char>>);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string w({L'a', L'b', L'c'}, test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), BStr<wchar_t, test_allocator<wchar_t>>);
+    assert(w == L"abc");
+#endif
+  }
+  { // Testing (14) w/o allocator
+    std::string_view sv("abc");
+    std::basic_string s(sv);
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using Expect = std::basic_string<wchar_t, constexpr_char_traits<wchar_t>>;
+    std::basic_string_view<wchar_t, constexpr_char_traits<wchar_t>> BSV(L"abcdef");
+    std::basic_string w(BSV);
+    ASSERT_SAME_TYPE(decltype(w), Expect);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (14) w/ allocator
+    using ExpectS = std::basic_string<char, std::char_traits<char>, test_allocator<char>>;
+    std::string_view sv("abc");
+    std::basic_string s(sv, test_allocator<char>{});
+    ASSERT_SAME_TYPE(decltype(s), ExpectS);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using ExpectW = std::basic_string<wchar_t, constexpr_char_traits<wchar_t>,
+                                      test_allocator<wchar_t>>;
+    std::basic_string_view<wchar_t, constexpr_char_traits<wchar_t>> BSV(L"abcdef");
+    std::basic_string w(BSV, test_allocator<wchar_t>{});
+    ASSERT_SAME_TYPE(decltype(w), ExpectW);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (15) w/o allocator
+    std::string s0("abc");
+    std::basic_string s(s0, 1, 1);
+    ASSERT_SAME_TYPE(decltype(s), std::string);
+    assert(s == "b");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::wstring w0(L"abcdef");
+    std::basic_string w(w0, 2, 2);
+    ASSERT_SAME_TYPE(decltype(w), std::wstring);
+    assert(w == L"cd");
+#endif
+  }
+  { // Testing (15) w/ allocator
+    using ExpectS = std::basic_string<char, std::char_traits<char>, test_allocator<char>>;
+    ExpectS s0("abc");
+    std::basic_string s(s0, 1, 1, test_allocator<char>{4});
+    ASSERT_SAME_TYPE(decltype(s), ExpectS);
+    assert(s == "b");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using ExpectW = std::basic_string<wchar_t, std::char_traits<wchar_t>, test_allocator<wchar_t>>;
+    ExpectW w0(L"abcdef");
+    std::basic_string w(w0, 2, 2, test_allocator<wchar_t>{6});
+    ASSERT_SAME_TYPE(decltype(w), ExpectW);
+    assert(w == L"cd");
+#endif
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/initializer_list.pass.cpp
new file mode 100644
index 0000000..fb00373
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/initializer_list.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string(initializer_list<charT> il, const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s = {'a', 'b', 'c'};
+    assert(s == "abc");
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wstring s;
+    s = {L'a', L'b', L'c'};
+    assert(s == L"abc");
+  }
+#endif
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s = {'a', 'b', 'c'};
+    assert(s == "abc");
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S;
+    S s;
+    s = {L'a', L'b', L'c'};
+    assert(s == L"abc");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp
new file mode 100644
index 0000000..500a09b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/initializer_list_assignment.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string& operator=(initializer_list<charT> il); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s;
+    s = {'a', 'b', 'c'};
+    assert(s == "abc");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s;
+    s = {'a', 'b', 'c'};
+    assert(s == "abc");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/iter_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/iter_alloc.pass.cpp
new file mode 100644
index 0000000..2735018
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/iter_alloc.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class InputIterator>
+//   basic_string(InputIterator begin, InputIterator end,
+//   const Allocator& a = Allocator()); // constexpr since C++20
+
+
+#include <string>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class It>
+TEST_CONSTEXPR_CXX20 void
+test(It first, It last)
+{
+    typedef typename std::iterator_traits<It>::value_type charT;
+    typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
+    typedef typename S::allocator_type A;
+    S s2(first, last);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == static_cast<std::size_t>(std::distance(first, last)));
+    unsigned i = 0;
+    for (It it = first; it != last;) {
+        assert(s2[i] == *it);
+        ++it;
+        ++i;
+    }
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+}
+
+template <class It, class A>
+TEST_CONSTEXPR_CXX20 void
+test(It first, It last, const A& a)
+{
+    typedef typename std::iterator_traits<It>::value_type charT;
+    typedef std::basic_string<charT, std::char_traits<charT>, A> S;
+    S s2(first, last, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == static_cast<std::size_t>(std::distance(first, last)));
+    unsigned i = 0;
+    for (It it = first; it != last;) {
+        assert(s2[i] == *it);
+        ++it;
+        ++i;
+    }
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    const char* s = "12345678901234567890123456789012345678901234567890";
+
+    test(s, s);
+    test(s, s, A(2));
+
+    test(s, s+1);
+    test(s, s+1, A(2));
+
+    test(s, s+10);
+    test(s, s+10, A(2));
+
+    test(s, s+50);
+    test(s, s+50, A(2));
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), A(2));
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), A(2));
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), A(2));
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+50));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+50), A(2));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    const char* s = "12345678901234567890123456789012345678901234567890";
+
+    test(s, s);
+    test(s, s, A());
+
+    test(s, s+1);
+    test(s, s+1, A());
+
+    test(s, s+10);
+    test(s, s+10, A());
+
+    test(s, s+50);
+    test(s, s+50, A());
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), A());
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), A());
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), A());
+
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+50));
+    test(cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+50), A());
+  }
+#endif
+  {
+      static_assert((!std::is_constructible<std::string, std::string,
+                                            std::string>::value),
+                    "");
+      static_assert(
+          (!std::is_constructible<std::string, std::string, std::string,
+                                  std::allocator<char> >::value),
+          "");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.pass.cpp
new file mode 100644
index 0000000..d6db253
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/iter_alloc_deduction.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class InputIterator,
+//      class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
+//  basic_string(InputIterator, InputIterator, Allocator = Allocator())
+//    -> basic_string<typename iterator_traits<InputIterator>::value_type,
+//                 char_traits<typename iterator_traits<InputIterator>::value_type>,
+//                 Allocator>; // constexpr since C++20
+//
+//  The deduction guide shall not participate in overload resolution if InputIterator
+//  is a type that does not qualify as an input iterator, or if Allocator is a type
+//  that does not qualify as an allocator.
+
+#include <cassert>
+#include <cstddef>
+#include <iterator>
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+class NotAnIterator {};
+using NotAnInputIterator = std::back_insert_iterator<std::basic_string<char16_t>>;
+
+template <typename T>
+struct NotAnAllocator { typedef T value_type; };
+
+template <class Iter, class Alloc, class = void>
+struct CanDeduce : std::false_type { };
+
+template <class Iter, class Alloc>
+struct CanDeduce<Iter, Alloc, decltype((void)
+  std::basic_string{std::declval<Iter>(), std::declval<Iter>(), std::declval<Alloc>()}
+)> : std::true_type { };
+
+static_assert( CanDeduce<char*, std::allocator<char>>::value);
+static_assert(!CanDeduce<NotAnIterator, std::allocator<char>>::value);
+static_assert(!CanDeduce<NotAnInputIterator, std::allocator<char16_t>>::value);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert( CanDeduce<wchar_t*, std::allocator<wchar_t>>::value);
+static_assert(!CanDeduce<wchar_t const*, NotAnAllocator<wchar_t>>::value);
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    const char* s = "12345678901234";
+    std::basic_string s1(s, s+10);  // Can't use {} here
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   std::allocator<char>>, "");
+    assert(s1.size() == 10);
+    assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
+  }
+  {
+    const char* s = "12345678901234";
+    std::basic_string s1{s, s+10, std::allocator<char>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   std::allocator<char>>, "");
+    assert(s1.size() == 10);
+    assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    const wchar_t* s = L"12345678901234";
+    std::basic_string s1{s, s+10, test_allocator<wchar_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      wchar_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<wchar_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   test_allocator<wchar_t>>, "");
+    assert(s1.size() == 10);
+    assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
+  }
+#endif
+  {
+    const char16_t* s = u"12345678901234";
+    std::basic_string s1{s, s+10, min_allocator<char16_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char16_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char16_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,    min_allocator<char16_t>>, "");
+    assert(s1.size() == 10);
+    assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
+  }
+  {
+    const char32_t* s = U"12345678901234";
+    std::basic_string s1{s, s+10, explicit_allocator<char32_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                        char32_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,      std::char_traits<char32_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type, explicit_allocator<char32_t>>, "");
+    assert(s1.size() == 10);
+    assert(s1.compare(0, s1.size(), s, s1.size()) == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp
new file mode 100644
index 0000000..336ed40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s0)
+{
+    S s1 = s0;
+    S s2 = std::move(s0);
+    LIBCPP_ASSERT(s2.__invariants());
+    LIBCPP_ASSERT(s0.__invariants());
+    assert(s2 == s1);
+    assert(s2.capacity() >= s2.size());
+    assert(s2.get_allocator() == s1.get_allocator());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(A(3)));
+    test(S("1", A(5)));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
+  }
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(A{}));
+    test(S("1", A()));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_alloc.pass.cpp
new file mode 100644
index 0000000..a6cf5fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_alloc.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string(basic_string&& str, const Allocator& alloc); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s0, const typename S::allocator_type& a)
+{
+    S s1 = s0;
+    S s2(std::move(s0), a);
+    LIBCPP_ASSERT(s2.__invariants());
+    LIBCPP_ASSERT(s0.__invariants());
+    assert(s2 == s1);
+    assert(s2.capacity() >= s2.size());
+    assert(s2.get_allocator() == a);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_allocator_statistics alloc_stats;
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "" );
+#endif
+    test(S(), A(3, &alloc_stats));
+    test(S("1"), A(5, &alloc_stats));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A(7, &alloc_stats));
+  }
+
+    int alloc_count = alloc_stats.alloc_count;
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "" );
+#endif
+    S s1 ( "Twas brillig, and the slivy toves did gyre and gymbal in the wabe", A(&alloc_stats));
+    S s2 (std::move(s1), A(1, &alloc_stats));
+  }
+    assert ( alloc_stats.alloc_count == alloc_count );
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+#if TEST_STD_VER > 14
+    static_assert((noexcept(S{})), "" );
+#elif TEST_STD_VER >= 11
+    static_assert((noexcept(S()) == std::is_nothrow_move_constructible<A>::value), "" );
+#endif
+    test(S(), A());
+    test(S("1"), A());
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), A());
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_assign_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_assign_noexcept.pass.cpp
new file mode 100644
index 0000000..c2b97ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_assign_noexcept.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string& operator=(basic_string&& c)
+//     noexcept(
+//         allocator_traits<allocator_type>::propagate_on_container_move_assignment::value ||
+//         allocator_traits<allocator_type>::is_always_equal::value); // C++17, constexpr since C++20
+//
+//  before C++17, we use the conforming extension
+//     noexcept(
+//         allocator_type::propagate_on_container_move_assignment::value &&
+//         is_nothrow_move_assignable<allocator_type>::value); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+    some_alloc(const some_alloc&);
+    T *allocate(size_t);
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    T *allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_move_assignment;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct some_alloc3
+{
+    typedef T value_type;
+
+    some_alloc3() {}
+    some_alloc3(const some_alloc3&);
+    T *allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_move_assignment;
+    typedef std::false_type is_always_equal;
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string C;
+    static_assert(std::is_nothrow_move_assignable<C>::value, "");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
+    static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, some_alloc<char>> C;
+#if TEST_STD_VER > 14
+    // if the allocators are always equal, then the move assignment can be noexcept
+    static_assert( std::is_nothrow_move_assignable<C>::value, "");
+#else
+      static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+#endif
+  }
+#if TEST_STD_VER > 14
+  {
+    //  POCMA is false, always equal
+    typedef std::basic_string<char, std::char_traits<char>, some_alloc2<char>> C;
+    static_assert( std::is_nothrow_move_assignable<C>::value, "");
+  }
+  {
+    //  POCMA is false, not always equal
+    typedef std::basic_string<char, std::char_traits<char>, some_alloc3<char>> C;
+    static_assert(!std::is_nothrow_move_assignable<C>::value, "");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_assignment.pass.cpp
new file mode 100644
index 0000000..bdae97a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_assignment.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   operator=(basic_string<charT,traits,Allocator>&& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, S s2)
+{
+    S s0 = s2;
+    s1 = std::move(s2);
+    LIBCPP_ASSERT(s1.__invariants());
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s1 == s0);
+    assert(s1.capacity() >= s1.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S());
+  test(S("1"), S());
+  test(S(), S("1"));
+  test(S("1"), S("2"));
+  test(S("1"), S("2"));
+
+  test(S(),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("123456789"),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
+          "1234567890123456789012345678901234567890123456789012345678901234567890"),
+        S("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_noexcept.pass.cpp
new file mode 100644
index 0000000..5d88f7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/move_noexcept.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string(basic_string&&)
+//        noexcept(is_nothrow_move_constructible<allocator_type>::value); // constexpr since C++20
+
+// This tests a conforming extension
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::string C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
+        static_assert(std::is_nothrow_move_constructible<C>::value, "");
+    }
+    {
+        typedef std::basic_string<char, std::char_traits<char>, limited_allocator<char, 10>> C;
+#if TEST_STD_VER <= 14
+        static_assert(!std::is_nothrow_move_constructible<C>::value, "");
+#else
+        static_assert( std::is_nothrow_move_constructible<C>::value, "");
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/nullptr.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/nullptr.compile.pass.cpp
new file mode 100644
index 0000000..3b6a00e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/nullptr.compile.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// basic_string(nullptr_t) = delete; // C++2b
+// basic_string& operator=(nullptr_t) = delete; // C++2b
+
+#include <string>
+#include <type_traits>
+
+static_assert(!std::is_convertible_v<decltype(nullptr), std::string>);
+static_assert(!std::is_constructible_v<std::string, decltype(nullptr)>);
+static_assert(!std::is_assignable_v<std::string, decltype(nullptr)>);
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp
new file mode 100644
index 0000000..b466eb1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_alloc.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(const charT* s, const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class charT>
+TEST_CONSTEXPR_CXX20 void
+test(const charT* s)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
+    typedef typename S::traits_type T;
+    typedef typename S::allocator_type A;
+    std::size_t n = T::length(s);
+    S s2(s);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == n);
+    assert(T::compare(s2.data(), s, n) == 0);
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+}
+
+template <class charT, class A>
+TEST_CONSTEXPR_CXX20 void
+test(const charT* s, const A& a)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, A> S;
+    typedef typename S::traits_type T;
+    std::size_t n = T::length(s);
+    S s2(s, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == n);
+    assert(T::compare(s2.data(), s, n) == 0);
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    {
+    typedef test_allocator<char> A;
+
+    test("");
+    test("", A(2));
+
+    test("1");
+    test("1", A(2));
+
+    test("1234567980");
+    test("1234567980", A(2));
+
+    test("123456798012345679801234567980123456798012345679801234567980");
+    test("123456798012345679801234567980123456798012345679801234567980", A(2));
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef min_allocator<char> A;
+
+    test("");
+    test("", A());
+
+    test("1");
+    test("1", A());
+
+    test("1234567980");
+    test("1234567980", A());
+
+    test("123456798012345679801234567980123456798012345679801234567980");
+    test("123456798012345679801234567980123456798012345679801234567980", A());
+    }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_assignment.pass.cpp
new file mode 100644
index 0000000..b8318de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_assignment.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   operator=(const charT* s); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, const typename S::value_type* s2)
+{
+    typedef typename S::traits_type T;
+    s1 = s2;
+    LIBCPP_ASSERT(s1.__invariants());
+    assert(s1.size() == T::length(s2));
+    assert(T::compare(s1.data(), s2, s1.size()) == 0);
+    assert(s1.capacity() >= s1.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), "");
+  test(S("1"), "");
+  test(S(), "1");
+  test(S("1"), "2");
+  test(S("1"), "2");
+
+  test(S(),
+        "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
+  test(S("123456789"),
+        "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
+        "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
+          "1234567890123456789012345678901234567890123456789012345678901234567890"),
+        "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz");
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp
new file mode 100644
index 0000000..d98771c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/pointer_size_alloc.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(const charT* s, size_type n, const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class charT>
+TEST_CONSTEXPR_CXX20 void
+test(const charT* s, unsigned n)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
+    typedef typename S::traits_type T;
+    typedef typename S::allocator_type A;
+    S s2(s, n);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == n);
+    assert(T::compare(s2.data(), s, n) == 0);
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+}
+
+template <class charT, class A>
+TEST_CONSTEXPR_CXX20 void
+test(const charT* s, unsigned n, const A& a)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, A> S;
+    typedef typename S::traits_type T;
+    S s2(s, n, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == n);
+    assert(T::compare(s2.data(), s, n) == 0);
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+
+    test("", 0);
+    test("", 0, A(2));
+
+    test("1", 1);
+    test("1", 1, A(2));
+
+    test("1234567980", 10);
+    test("1234567980", 10, A(2));
+
+    test("123456798012345679801234567980123456798012345679801234567980", 60);
+    test("123456798012345679801234567980123456798012345679801234567980", 60, A(2));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+
+    test("", 0);
+    test("", 0, A());
+
+    test("1", 1);
+    test("1", 1, A());
+
+    test("1234567980", 10);
+    test("1234567980", 10, A());
+
+    test("123456798012345679801234567980123456798012345679801234567980", 60);
+    test("123456798012345679801234567980123456798012345679801234567980", 60, A());
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  {   // LWG 2946
+    std::string s({"abc", 1});
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
new file mode 100644
index 0000000..c53d6c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/size_char_alloc.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(size_type n, charT c, const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class charT>
+TEST_CONSTEXPR_CXX20 void
+test(unsigned n, charT c)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
+    typedef typename S::allocator_type A;
+    S s2(n, c);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == n);
+    for (unsigned i = 0; i < n; ++i)
+        assert(s2[i] == c);
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+}
+
+template <class charT, class A>
+TEST_CONSTEXPR_CXX20 void
+test(unsigned n, charT c, const A& a)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, A> S;
+    S s2(n, c, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == n);
+    for (unsigned i = 0; i < n; ++i)
+        assert(s2[i] == c);
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+}
+
+template <class Tp>
+TEST_CONSTEXPR_CXX20 void
+test(Tp n, Tp c)
+{
+    typedef char charT;
+    typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
+    typedef typename S::allocator_type A;
+    S s2(n, c);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == static_cast<std::size_t>(n));
+    for (int i = 0; i < n; ++i)
+        assert(s2[i] == c);
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+}
+
+template <class Tp, class A>
+TEST_CONSTEXPR_CXX20 void
+test(Tp n, Tp c, const A& a)
+{
+    typedef char charT;
+    typedef std::basic_string<charT, std::char_traits<charT>, A> S;
+    S s2(n, c, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == static_cast<std::size_t>(n));
+    for (int i = 0; i < n; ++i)
+        assert(s2[i] == c);
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+
+    test(0, 'a');
+    test(0, 'a', A(2));
+
+    test(1, 'a');
+    test(1, 'a', A(2));
+
+    test(10, 'a');
+    test(10, 'a', A(2));
+
+    test(100, 'a');
+    test(100, 'a', A(2));
+
+    test(static_cast<char>(100), static_cast<char>(65));
+    test(static_cast<char>(100), static_cast<char>(65), A(3));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+
+    test(0, 'a');
+    test(0, 'a', A());
+
+    test(1, 'a');
+    test(1, 'a', A());
+
+    test(10, 'a');
+    test(10, 'a', A());
+
+    test(100, 'a');
+    test(100, 'a', A());
+
+    test(static_cast<char>(100), static_cast<char>(65));
+    test(static_cast<char>(100), static_cast<char>(65), A());
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view.pass.cpp
new file mode 100644
index 0000000..125bd40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view.pass.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// explicit basic_string(basic_string_view<CharT, traits> sv, const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <algorithm>
+#include <cassert>
+#include <stdexcept>
+#include <string_view>
+#include <string>
+#include <type_traits>
+
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+static_assert(!std::is_convertible<std::string_view, std::string const&>::value, "");
+static_assert(!std::is_convertible<std::string_view, std::string>::value, "");
+
+template <class charT>
+TEST_CONSTEXPR_CXX20 void
+test(std::basic_string_view<charT> sv)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
+    typedef typename S::traits_type T;
+    typedef typename S::allocator_type A;
+  {
+    S s2(sv);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == sv.size());
+    assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+  }
+  {
+    S s2;
+    s2 = sv;
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == sv.size());
+    assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
+    assert(s2.get_allocator() == A());
+    assert(s2.capacity() >= s2.size());
+  }
+}
+
+template <class charT, class A>
+TEST_CONSTEXPR_CXX20 void
+test(std::basic_string_view<charT> sv, const A& a)
+{
+    typedef std::basic_string<charT, std::char_traits<charT>, A> S;
+    typedef typename S::traits_type T;
+  {
+    S s2(sv, a);
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == sv.size());
+    assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+  }
+  {
+    S s2(a);
+    s2 = sv;
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s2.size() == sv.size());
+    assert(T::compare(s2.data(), sv.data(), sv.size()) == 0);
+    assert(s2.get_allocator() == a);
+    assert(s2.capacity() >= s2.size());
+  }
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string_view<char, std::char_traits<char> > SV;
+
+    test(SV(""));
+    test(SV(""), A(2));
+
+    test(SV("1"));
+    test(SV("1") ,A(2));
+
+    test(SV("1234567980"));
+    test(SV("1234567980"), A(2));
+
+    test(SV("123456798012345679801234567980123456798012345679801234567980"));
+    test(SV("123456798012345679801234567980123456798012345679801234567980"), A(2));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string_view<char, std::char_traits<char> > SV;
+
+    test(SV(""));
+    test(SV(""), A());
+
+    test(SV("1"));
+    test(SV("1") ,A());
+
+    test(SV("1234567980"));
+    test(SV("1234567980"), A());
+
+    test(SV("123456798012345679801234567980123456798012345679801234567980"));
+    test(SV("123456798012345679801234567980123456798012345679801234567980"), A());
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_assignment.pass.cpp
new file mode 100644
index 0000000..ed09a17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_assignment.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>& operator=(basic_string_view<charT, traits> sv); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, SV sv)
+{
+    typedef typename S::traits_type T;
+    s1 = sv;
+    LIBCPP_ASSERT(s1.__invariants());
+    assert(s1.size() == sv.size());
+    assert(T::compare(s1.data(), sv.data(), s1.size()) == 0);
+    assert(s1.capacity() >= s1.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(), SV(""));
+  test(S("1"), SV(""));
+  test(S(), SV("1"));
+  test(S("1"), SV("2"));
+  test(S("1"), SV("2"));
+
+  test(S(),
+        SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("123456789"),
+        SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"),
+        SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+  test(S("1234567890123456789012345678901234567890123456789012345678901234567890"
+          "1234567890123456789012345678901234567890123456789012345678901234567890"),
+        SV("abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_deduction.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_deduction.pass.cpp
new file mode 100644
index 0000000..1bd7ab2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_deduction.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class charT,
+//          class traits,
+//          class Allocator = allocator<charT>
+//          >
+// basic_string(basic_string_view<charT, traits>, const Allocator& = Allocator())
+//   -> basic_string<charT, traits, Allocator>;
+//
+//  The deduction guide shall not participate in overload resolution if Allocator
+//  is a type that does not qualify as an allocator.
+
+#include <string>
+#include <string_view>
+#include <iterator>
+#include <memory>
+#include <type_traits>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class StringView, class Allocator, class = void>
+struct CanDeduce : std::false_type { };
+
+template <class StringView, class Allocator>
+struct CanDeduce<StringView, Allocator, decltype((void)
+  std::basic_string{std::declval<StringView>(), std::declval<Allocator>()}
+)> : std::true_type { };
+
+struct NotAnAllocator { };
+static_assert( CanDeduce<std::string_view, std::allocator<char>>::value);
+static_assert(!CanDeduce<std::string_view, NotAnAllocator>::value);
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string_view sv = "12345678901234";
+    std::basic_string s1(sv);
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   std::allocator<char>>, "");
+    assert(s1.size() == sv.size());
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+
+  {
+    std::string_view sv = "12345678901234";
+    std::basic_string s1{sv, std::allocator<char>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   std::allocator<char>>, "");
+    assert(s1.size() == sv.size());
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wstring_view sv = L"12345678901234";
+    std::basic_string s1{sv, test_allocator<wchar_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      wchar_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<wchar_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   test_allocator<wchar_t>>, "");
+    assert(s1.size() == sv.size());
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  {
+    std::u8string_view sv = u8"12345678901234";
+    std::basic_string s1{sv, min_allocator<char8_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char8_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char8_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,    min_allocator<char8_t>>, "");
+    assert(s1.size() == sv.size());
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+#endif
+  {
+    std::u16string_view sv = u"12345678901234";
+    std::basic_string s1{sv, min_allocator<char16_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char16_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char16_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,    min_allocator<char16_t>>, "");
+    assert(s1.size() == sv.size());
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+  {
+    std::u32string_view sv = U"12345678901234";
+    std::basic_string s1{sv, explicit_allocator<char32_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                        char32_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,      std::char_traits<char32_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type, explicit_allocator<char32_t>>, "");
+    assert(s1.size() == sv.size());
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_size_size_deduction.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_size_size_deduction.pass.cpp
new file mode 100644
index 0000000..ce26356
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/string_view_size_size_deduction.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class charT,
+//          class traits,
+//          class Allocator = allocator<charT>
+//          >
+// basic_string(basic_string_view<charT, traits>,
+//                typename see below::size_type,
+//                typename see below::size_type,
+//                const Allocator& = Allocator())
+//   -> basic_string<charT, traits, Allocator>;
+//
+//  A size_type parameter type in a basic_string deduction guide refers to the size_type
+//  member type of the type deduced by the deduction guide.
+//
+//  The deduction guide shall not participate in overload resolution if Allocator
+//  is a type that does not qualify as an allocator.
+
+#include <string>
+#include <string_view>
+#include <iterator>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class StringView, class Size, class Allocator, class = void>
+struct CanDeduce : std::false_type { };
+
+template <class StringView, class Size, class Allocator>
+struct CanDeduce<StringView, Size, Allocator, decltype((void)
+  std::basic_string{std::declval<StringView>(), std::declval<Size>(), std::declval<Size>(), std::declval<Allocator>()}
+)> : std::true_type { };
+
+struct NotAnAllocator { };
+static_assert( CanDeduce<std::string_view, std::size_t, std::allocator<char>>::value);
+static_assert(!CanDeduce<std::string_view, std::size_t, NotAnAllocator>::value);
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string_view sv = "12345678901234";
+    std::basic_string s1{sv, 0, 4};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   std::allocator<char>>, "");
+    assert(s1.size() == 4);
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+
+  {
+    std::string_view sv = "12345678901234";
+    std::basic_string s1{sv, 0, 4, std::allocator<char>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   std::allocator<char>>, "");
+    assert(s1.size() == 4);
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    std::wstring_view sv = L"12345678901234";
+    std::basic_string s1{sv, 0, 4, test_allocator<wchar_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      wchar_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<wchar_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,   test_allocator<wchar_t>>, "");
+    assert(s1.size() == 4);
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  {
+    std::u8string_view sv = u8"12345678901234";
+    std::basic_string s1{sv, 0, 4, min_allocator<char8_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char8_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char8_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,    min_allocator<char8_t>>, "");
+    assert(s1.size() == 4);
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+#endif
+  {
+    std::u16string_view sv = u"12345678901234";
+    std::basic_string s1{sv, 0, 4, min_allocator<char16_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                      char16_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,    std::char_traits<char16_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type,    min_allocator<char16_t>>, "");
+    assert(s1.size() == 4);
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+  {
+    std::u32string_view sv = U"12345678901234";
+    std::basic_string s1{sv, 0, 4, explicit_allocator<char32_t>{}};
+    using S = decltype(s1); // what type did we get?
+    static_assert(std::is_same_v<S::value_type,                        char32_t>,  "");
+    static_assert(std::is_same_v<S::traits_type,      std::char_traits<char32_t>>, "");
+    static_assert(std::is_same_v<S::allocator_type, explicit_allocator<char32_t>>, "");
+    assert(s1.size() == 4);
+    assert(s1.compare(0, s1.size(), sv.data(), s1.size()) == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp
new file mode 100644
index 0000000..e89f6cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/substr.pass.cpp
@@ -0,0 +1,233 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string(const basic_string<charT,traits,Allocator>& str,
+//              size_type pos, size_type n,
+//              const Allocator& a = Allocator()); // constexpr since C++20
+//
+// basic_string(const basic_string<charT,traits,Allocator>& str,
+//              size_type pos,
+//              const Allocator& a = Allocator()); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <vector>
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S str, unsigned pos)
+{
+    typedef typename S::traits_type T;
+    typedef typename S::allocator_type A;
+
+    if (pos <= str.size())
+    {
+        S s2(str, pos);
+        LIBCPP_ASSERT(s2.__invariants());
+        typename S::size_type rlen = str.size() - pos;
+        assert(s2.size() == rlen);
+        assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
+        assert(s2.get_allocator() == A());
+        assert(s2.capacity() >= s2.size());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            S s2(str, pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S str, unsigned pos, unsigned n)
+{
+    typedef typename S::traits_type T;
+    typedef typename S::allocator_type A;
+    if (pos <= str.size())
+    {
+        S s2(str, pos, n);
+        LIBCPP_ASSERT(s2.__invariants());
+        typename S::size_type rlen = std::min<typename S::size_type>(str.size() - pos, n);
+        assert(s2.size() == rlen);
+        assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
+        assert(s2.get_allocator() == A());
+        assert(s2.capacity() >= s2.size());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            S s2(str, pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S str, unsigned pos, unsigned n, const typename S::allocator_type& a)
+{
+    typedef typename S::traits_type T;
+
+    if (pos <= str.size())
+    {
+        S s2(str, pos, n, a);
+        LIBCPP_ASSERT(s2.__invariants());
+        typename S::size_type rlen = std::min<typename S::size_type>(str.size() - pos, n);
+        assert(s2.size() == rlen);
+        assert(T::compare(s2.data(), str.data() + pos, rlen) == 0);
+        assert(s2.get_allocator() == a);
+        assert(s2.capacity() >= s2.size());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            S s2(str, pos, n, a);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+void test_lwg2583()
+{
+#if TEST_STD_VER >= 11 && !defined(TEST_HAS_NO_EXCEPTIONS)
+    typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> StringA;
+    std::vector<StringA, std::scoped_allocator_adaptor<test_allocator<StringA>>> vs;
+    StringA s{"1234"};
+    vs.emplace_back(s, 2);
+
+    try { vs.emplace_back(s, 5); }
+    catch (const std::out_of_range&) { return; }
+    assert(false);
+#endif
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+
+    test(S(A(3)), 0);
+    test(S(A(3)), 1);
+    test(S("1", A(5)), 0);
+    test(S("1", A(5)), 1);
+    test(S("1", A(5)), 2);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 0);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 5);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 500);
+
+    test(S(A(3)), 0, 0);
+    test(S(A(3)), 0, 1);
+    test(S(A(3)), 1, 0);
+    test(S(A(3)), 1, 1);
+    test(S(A(3)), 1, 2);
+    test(S("1", A(5)), 0, 0);
+    test(S("1", A(5)), 0, 1);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 0);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 1);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 10);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 100);
+
+    test(S(A(3)), 0, 0, A(4));
+    test(S(A(3)), 0, 1, A(4));
+    test(S(A(3)), 1, 0, A(4));
+    test(S(A(3)), 1, 1, A(4));
+    test(S(A(3)), 1, 2, A(4));
+    test(S("1", A(5)), 0, 0, A(6));
+    test(S("1", A(5)), 0, 1, A(6));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 0, A(8));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 1, A(8));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 10, A(8));
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), 50, 100, A(8));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+
+    test(S(A()), 0);
+    test(S(A()), 1);
+    test(S("1", A()), 0);
+    test(S("1", A()), 1);
+    test(S("1", A()), 2);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 0);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 5);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 500);
+
+    test(S(A()), 0, 0);
+    test(S(A()), 0, 1);
+    test(S(A()), 1, 0);
+    test(S(A()), 1, 1);
+    test(S(A()), 1, 2);
+    test(S("1", A()), 0, 0);
+    test(S("1", A()), 0, 1);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 0);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 1);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 10);
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 100);
+
+    test(S(A()), 0, 0, A());
+    test(S(A()), 0, 1, A());
+    test(S(A()), 1, 0, A());
+    test(S(A()), 1, 1, A());
+    test(S(A()), 1, 2, A());
+    test(S("1", A()), 0, 0, A());
+    test(S("1", A()), 0, 1, A());
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 0, A());
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 1, A());
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 10, A());
+    test(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()), 50, 100, A());
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+  test_lwg2583();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/substr_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/substr_rvalue.pass.cpp
new file mode 100644
index 0000000..272ce33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.cons/substr_rvalue.pass.cpp
@@ -0,0 +1,234 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// constexpr basic_string(basic_string&& str, size_type pos, const Allocator& a = Allocator());
+// constexpr basic_string(basic_string&& str, size_type pos, size_type n, const Allocator& a = Allocator());
+
+#include <cassert>
+#include <stdexcept>
+#include <string>
+
+#include "constexpr_char_traits.h"
+#include "count_new.h"
+#include "make_string.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+#define STR(string) MAKE_CSTRING(typename S::value_type, string)
+
+constexpr struct should_throw_exception_t {
+} should_throw_exception;
+
+template <class S>
+constexpr void test_string_pos(S orig, typename S::size_type pos, S expected) {
+#ifdef _LIBCPP_VERSION
+  ConstexprDisableAllocationGuard g;
+#endif
+  S substr(std::move(orig), pos);
+  LIBCPP_ASSERT(orig.__invariants());
+  LIBCPP_ASSERT(orig.empty());
+  LIBCPP_ASSERT(substr.__invariants());
+  assert(substr == expected);
+}
+
+template <class S>
+constexpr void test_string_pos(S orig, typename S::size_type pos, should_throw_exception_t) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!std::is_constant_evaluated()) {
+    try {
+      [[maybe_unused]] S substr = S(std::move(orig), pos);
+      assert(false);
+    } catch (const std::out_of_range&) {
+    }
+  }
+#else
+  (void)orig;
+  (void)pos;
+#endif
+}
+
+template <class S>
+constexpr void
+test_string_pos_alloc(S orig, typename S::size_type pos, const typename S::allocator_type& alloc, S expected) {
+  S substr(std::move(orig), pos, alloc);
+  LIBCPP_ASSERT(orig.__invariants());
+  LIBCPP_ASSERT(substr.__invariants());
+  assert(substr == expected);
+  assert(substr.get_allocator() == alloc);
+}
+
+template <class S>
+constexpr void test_string_pos_alloc(
+    S orig, typename S::size_type pos, const typename S::allocator_type& alloc, should_throw_exception_t) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!std::is_constant_evaluated()) {
+    try {
+      [[maybe_unused]] S substr = S(std::move(orig), pos, alloc);
+      assert(false);
+    } catch (const std::out_of_range&) {
+    }
+  }
+#else
+  (void)orig;
+  (void)pos;
+  (void)alloc;
+#endif
+}
+
+template <class S>
+constexpr void test_string_pos_n(S orig, typename S::size_type pos, typename S::size_type n, S expected) {
+#ifdef _LIBCPP_VERSION
+  ConstexprDisableAllocationGuard g;
+#endif
+  S substr(std::move(orig), pos, n);
+  LIBCPP_ASSERT(orig.__invariants());
+  LIBCPP_ASSERT(orig.empty());
+  LIBCPP_ASSERT(substr.__invariants());
+  assert(substr == expected);
+}
+
+template <class S>
+constexpr void test_string_pos_n(S orig, typename S::size_type pos, typename S::size_type n, should_throw_exception_t) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!std::is_constant_evaluated()) {
+    try {
+      [[maybe_unused]] S substr = S(std::move(orig), pos, n);
+      assert(false);
+    } catch (const std::out_of_range&) {
+    }
+  }
+#else
+  (void)orig;
+  (void)pos;
+  (void)n;
+#endif
+}
+
+template <class S>
+constexpr void test_string_pos_n_alloc(
+    S orig, typename S::size_type pos, typename S::size_type n, const typename S::allocator_type& alloc, S expected) {
+  S substr(std::move(orig), pos, n, alloc);
+  LIBCPP_ASSERT(orig.__invariants());
+  LIBCPP_ASSERT(substr.__invariants());
+  assert(substr == expected);
+  assert(substr.get_allocator() == alloc);
+}
+
+template <class S>
+constexpr void test_string_pos_n_alloc(
+    S orig,
+    typename S::size_type pos,
+    typename S::size_type n,
+    const typename S::allocator_type& alloc,
+    should_throw_exception_t) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!std::is_constant_evaluated()) {
+    try {
+      [[maybe_unused]] S substr = S(std::move(orig), pos, n, alloc);
+      assert(false);
+    } catch (const std::out_of_range&) {
+    }
+  }
+#else
+  (void)orig;
+  (void)pos;
+  (void)n;
+  (void)alloc;
+#endif
+}
+
+template <class S>
+constexpr void test_string(const typename S::allocator_type& alloc) {
+  test_string_pos<S>(STR(""), 0, STR(""));
+  test_string_pos<S>(STR(""), 1, should_throw_exception);
+  test_string_pos<S>(STR("Banane"), 1, STR("anane"));
+  test_string_pos<S>(STR("Banane"), 6, STR(""));
+  test_string_pos<S>(STR("Banane"), 7, should_throw_exception);
+  test_string_pos<S>(STR("long long string so no SSO"), 0, STR("long long string so no SSO"));
+  test_string_pos<S>(STR("long long string so no SSO"), 10, STR("string so no SSO"));
+  test_string_pos<S>(STR("long long string so no SSO"), 26, STR(""));
+  test_string_pos<S>(STR("long long string so no SSO"), 27, should_throw_exception);
+
+  test_string_pos_alloc<S>(STR(""), 0, alloc, STR(""));
+  test_string_pos_alloc<S>(STR(""), 1, alloc, should_throw_exception);
+  test_string_pos_alloc<S>(STR("Banane"), 1, alloc, STR("anane"));
+  test_string_pos_alloc<S>(STR("Banane"), 6, alloc, STR(""));
+  test_string_pos_alloc<S>(STR("Banane"), 7, alloc, should_throw_exception);
+  test_string_pos_alloc<S>(STR("long long string so no SSO"), 0, alloc, STR("long long string so no SSO"));
+  test_string_pos_alloc<S>(STR("long long string so no SSO"), 10, alloc, STR("string so no SSO"));
+  test_string_pos_alloc<S>(STR("long long string so no SSO"), 26, alloc, STR(""));
+  test_string_pos_alloc<S>(STR("long long string so no SSO"), 27, alloc, should_throw_exception);
+
+  test_string_pos_n<S>(STR(""), 0, 0, STR(""));
+  test_string_pos_n<S>(STR(""), 0, 1, STR(""));
+  test_string_pos_n<S>(STR(""), 1, 0, should_throw_exception);
+  test_string_pos_n<S>(STR(""), 1, 1, should_throw_exception);
+  test_string_pos_n<S>(STR("Banane"), 1, 10, STR("anane"));
+  test_string_pos_n<S>(STR("Banane"), 6, 0, STR(""));
+  test_string_pos_n<S>(STR("Banane"), 6, 5, STR(""));
+  test_string_pos_n<S>(STR("Banane"), 7, 10, should_throw_exception);
+  test_string_pos_n<S>(STR("long long string so no SSO"), 0, 10, STR("long long "));
+  test_string_pos_n<S>(STR("long long string so no SSO"), 10, 8, STR("string s"));
+  test_string_pos_n<S>(STR("long long string so no SSO"), 20, 10, STR("no SSO"));
+  test_string_pos_n<S>(STR("long long string so no SSO"), 26, 10, STR(""));
+  test_string_pos_n<S>(STR("long long string so no SSO"), 27, 10, should_throw_exception);
+
+  test_string_pos_n_alloc<S>(STR(""), 0, 0, alloc, STR(""));
+  test_string_pos_n_alloc<S>(STR(""), 0, 1, alloc, STR(""));
+  test_string_pos_n_alloc<S>(STR(""), 1, 0, alloc, should_throw_exception);
+  test_string_pos_n_alloc<S>(STR(""), 1, 1, alloc, should_throw_exception);
+  test_string_pos_n_alloc<S>(STR("Banane"), 1, 10, alloc, STR("anane"));
+  test_string_pos_n_alloc<S>(STR("Banane"), 6, 0, alloc, STR(""));
+  test_string_pos_n_alloc<S>(STR("Banane"), 6, 5, alloc, STR(""));
+  test_string_pos_n_alloc<S>(STR("Banane"), 7, 10, alloc, should_throw_exception);
+  test_string_pos_n_alloc<S>(STR("long long string so no SSO"), 0, 10, alloc, STR("long long "));
+  test_string_pos_n_alloc<S>(STR("long long string so no SSO"), 10, 8, alloc, STR("string s"));
+  test_string_pos_n_alloc<S>(STR("long long string so no SSO"), 20, 10, alloc, STR("no SSO"));
+  test_string_pos_n_alloc<S>(STR("long long string so no SSO"), 26, 10, alloc, STR(""));
+  test_string_pos_n_alloc<S>(STR("long long string so no SSO"), 27, 10, alloc, should_throw_exception);
+}
+
+template <class CharT, class CharTraits>
+constexpr void test_allocators() {
+  test_string<std::basic_string<CharT, CharTraits, std::allocator<CharT>>>(std::allocator<CharT>{});
+  test_string<std::basic_string<CharT, CharTraits, min_allocator<CharT>>>(min_allocator<CharT>{});
+  test_string<std::basic_string<CharT, CharTraits, test_allocator<CharT>>>(test_allocator<CharT>{42});
+}
+
+template <class CharT>
+constexpr bool test_char_traits() {
+  test_allocators<CharT, std::char_traits<CharT>>();
+  test_allocators<CharT, constexpr_char_traits<CharT>>();
+
+  return true;
+}
+
+int main(int, char**) {
+  // TODO: put these into a single function when we increase the constexpr step limit
+  test_char_traits<char>();
+  static_assert(test_char_traits<char>());
+  test_char_traits<char16_t>();
+  static_assert(test_char_traits<char16_t>());
+  test_char_traits<char32_t>();
+  static_assert(test_char_traits<char32_t>());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_char_traits<wchar_t>();
+  static_assert(test_char_traits<wchar_t>());
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test_char_traits<char8_t>();
+  static_assert(test_char_traits<char8_t>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.char.pass.cpp
new file mode 100644
index 0000000..3b410f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.char.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// constexpr bool contains(charT x) const noexcept;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    using S = std::string;
+
+    S s1 {};
+    S s2 {"abcde", 5};
+
+    ASSERT_NOEXCEPT(s1.contains('e'));
+
+    assert(!s1.contains('c'));
+    assert(!s1.contains('e'));
+    assert(!s1.contains('x'));
+    assert( s2.contains('c'));
+    assert( s2.contains('e'));
+    assert(!s2.contains('x'));
+
+    return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.ptr.pass.cpp
new file mode 100644
index 0000000..978e814
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.ptr.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// constexpr bool contains(const CharT *x) const;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    using S = std::string;
+
+    const char* s = "abcde";
+    S s0;
+    S s1 {s + 4, 1};
+    S s3 {s + 2, 3};
+    S sNot {"xyz", 3};
+
+    assert(s0.contains(""));
+    assert(!s0.contains("e"));
+
+    assert( s1.contains(""));
+    assert(!s1.contains("d"));
+    assert( s1.contains("e"));
+    assert(!s1.contains("de"));
+    assert(!s1.contains("cd"));
+    assert(!s1.contains("cde"));
+    assert(!s1.contains("bcde"));
+    assert(!s1.contains("abcde"));
+    assert(!s1.contains("xyz"));
+
+    assert( s3.contains(""));
+    assert( s3.contains("d"));
+    assert( s3.contains("e"));
+    assert( s3.contains("de"));
+    assert( s3.contains("cd"));
+    assert(!s3.contains("ce"));
+    assert( s3.contains("cde"));
+    assert(!s3.contains("edc"));
+    assert(!s3.contains("bcde"));
+    assert(!s3.contains("abcde"));
+    assert(!s3.contains("xyz"));
+
+    assert( sNot.contains(""));
+    assert(!sNot.contains("d"));
+    assert(!sNot.contains("e"));
+    assert(!sNot.contains("de"));
+    assert(!sNot.contains("cd"));
+    assert(!sNot.contains("cde"));
+    assert(!sNot.contains("bcde"));
+    assert(!sNot.contains("abcde"));
+    assert( sNot.contains("xyz"));
+    assert(!sNot.contains("zyx"));
+
+    return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.string_view.pass.cpp
new file mode 100644
index 0000000..77301c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.contains/contains.string_view.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// constexpr bool contains(basic_string_view x) const noexcept;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    using S = std::string;
+    using SV = std::string_view;
+
+    const char* s = "abcde";
+    S s0;
+    S s1 {s + 1, 1};
+    S s3 {s + 1, 3};
+    S s5 {s    , 5};
+    S sNot {"xyz", 3};
+
+    SV sv0;
+    SV sv1 {s + 1, 1};
+    SV sv2 {s + 1, 2};
+    SV sv3 {s + 1, 3};
+    SV sv4 {s + 1, 4};
+    SV sv5 {s    , 5};
+    SV svNot  {"xyz", 3};
+    SV svNot2 {"bd" , 2};
+    SV svNot3 {"dcb", 3};
+
+    ASSERT_NOEXCEPT(s0.contains(sv0));
+
+    assert( s0.contains(sv0));
+    assert(!s0.contains(sv1));
+
+    assert( s1.contains(sv0));
+    assert( s1.contains(sv1));
+    assert(!s1.contains(sv2));
+    assert(!s1.contains(sv3));
+    assert(!s1.contains(sv4));
+    assert(!s1.contains(sv5));
+    assert(!s1.contains(svNot));
+    assert(!s1.contains(svNot2));
+    assert(!s1.contains(svNot3));
+
+    assert( s3.contains(sv0));
+    assert( s3.contains(sv1));
+    assert( s3.contains(sv2));
+    assert( s3.contains(sv3));
+    assert(!s3.contains(sv4));
+    assert(!s3.contains(sv5));
+    assert(!s3.contains(svNot));
+    assert(!s3.contains(svNot2));
+    assert(!s3.contains(svNot3));
+
+    assert( s5.contains(sv0));
+    assert( s5.contains(sv1));
+    assert( s5.contains(sv2));
+    assert( s5.contains(sv3));
+    assert( s5.contains(sv4));
+    assert( s5.contains(sv5));
+    assert(!s5.contains(svNot));
+    assert(!s5.contains(svNot2));
+    assert(!s5.contains(svNot3));
+
+    assert( sNot.contains(sv0));
+    assert(!sNot.contains(sv1));
+    assert(!sNot.contains(sv2));
+    assert(!sNot.contains(sv3));
+    assert(!sNot.contains(sv4));
+    assert(!sNot.contains(sv5));
+    assert( sNot.contains(svNot));
+    assert(!sNot.contains(svNot2));
+    assert(!sNot.contains(svNot3));
+
+    return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.char.pass.cpp
new file mode 100644
index 0000000..da5f5ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.char.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// constexpr bool ends_with(charT x) const noexcept;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    typedef std::string S;
+    S  s1 {};
+    S  s2 { "abcde", 5 };
+
+    ASSERT_NOEXCEPT(s1.ends_with('e'));
+
+    assert (!s1.ends_with('e'));
+    assert (!s1.ends_with('x'));
+    assert ( s2.ends_with('e'));
+    assert (!s2.ends_with('x'));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.ptr.pass.cpp
new file mode 100644
index 0000000..86796c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.ptr.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// constexpr bool ends_with(const CharT *x) const;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    typedef std::string S;
+    const char *s = "abcde";
+
+    S   s0;
+    S   s1  { s + 4, 1 };
+    S   s2  { s + 3, 2 };
+//  S   s3  { s + 2, 3 };
+//  S   s4  { s + 1, 4 };
+//  S   s5  { s,     5 };
+    S  sNot { "def", 3 };
+
+    LIBCPP_ASSERT_NOEXCEPT(s0.ends_with(""));
+
+    assert ( s0.ends_with(""));
+    assert (!s0.ends_with("e"));
+
+    assert ( s1.ends_with(""));
+    assert ( s1.ends_with("e"));
+    assert (!s1.ends_with("de"));
+    assert (!s1.ends_with("cde"));
+    assert (!s1.ends_with("bcde"));
+    assert (!s1.ends_with("abcde"));
+    assert (!s1.ends_with("def"));
+
+    assert ( s2.ends_with(""));
+    assert ( s2.ends_with("e"));
+    assert ( s2.ends_with("de"));
+    assert (!s2.ends_with("cde"));
+    assert (!s2.ends_with("bcde"));
+    assert (!s2.ends_with("abcde"));
+    assert (!s2.ends_with("def"));
+
+    assert ( sNot.ends_with(""));
+    assert (!sNot.ends_with("e"));
+    assert (!sNot.ends_with("de"));
+    assert (!sNot.ends_with("cde"));
+    assert (!sNot.ends_with("bcde"));
+    assert (!sNot.ends_with("abcde"));
+    assert ( sNot.ends_with("def"));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.string_view.pass.cpp
new file mode 100644
index 0000000..a4600d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ends_with/ends_with.string_view.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// constexpr bool ends_with(basic_string_view x) const noexcept;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    const char *s = "abcde";
+
+    S   s0;
+    S   s1  { s + 4, 1 };
+    S   s2  { s + 3, 2 };
+//  S   s3  { s + 2, 3 };
+//  S   s4  { s + 1, 4 };
+//  S   s5  { s,     5 };
+    S  sNot { "def", 3 };
+
+    SV  sv0;
+    SV  sv1 { s + 4, 1 };
+    SV  sv2 { s + 3, 2 };
+    SV  sv3 { s + 2, 3 };
+    SV  sv4 { s + 1, 4 };
+    SV  sv5 { s    , 5 };
+    SV svNot {"def", 3 };
+
+    ASSERT_NOEXCEPT(s0.ends_with(sv0));
+
+    assert ( s0.ends_with(sv0));
+    assert (!s0.ends_with(sv1));
+
+    assert ( s1.ends_with(sv0));
+    assert ( s1.ends_with(sv1));
+    assert (!s1.ends_with(sv2));
+    assert (!s1.ends_with(sv3));
+    assert (!s1.ends_with(sv4));
+    assert (!s1.ends_with(sv5));
+    assert (!s1.ends_with(svNot));
+
+    assert ( s2.ends_with(sv0));
+    assert ( s2.ends_with(sv1));
+    assert ( s2.ends_with(sv2));
+    assert (!s2.ends_with(sv3));
+    assert (!s2.ends_with(sv4));
+    assert (!s2.ends_with(sv5));
+    assert (!s2.ends_with(svNot));
+
+    assert ( sNot.ends_with(sv0));
+    assert (!sNot.ends_with(sv1));
+    assert (!sNot.ends_with(sv2));
+    assert (!sNot.ends_with(sv3));
+    assert (!sNot.ends_with(sv4));
+    assert (!sNot.ends_with(sv5));
+    assert ( sNot.ends_with(svNot));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/begin.pass.cpp
new file mode 100644
index 0000000..8363262
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/begin.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+//       iterator begin(); // constexpr since C++20
+// const_iterator begin() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    const S& cs = s;
+    typename S::iterator b = s.begin();
+    typename S::const_iterator cb = cs.begin();
+    if (!s.empty())
+    {
+        assert(*b == s[0]);
+    }
+    assert(b == cb);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/cbegin.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/cbegin.pass.cpp
new file mode 100644
index 0000000..0a53017
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/cbegin.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const_iterator cbegin() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    typename S::const_iterator cb = s.cbegin();
+    if (!s.empty())
+    {
+        assert(*cb == s[0]);
+    }
+    assert(cb == s.begin());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/cend.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/cend.pass.cpp
new file mode 100644
index 0000000..c142cba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/cend.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const_iterator cend() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    typename S::const_iterator ce = s.cend();
+    assert(ce == s.end());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/crbegin.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/crbegin.pass.cpp
new file mode 100644
index 0000000..95da6d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/crbegin.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const_reverse_iterator crbegin() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    typename S::const_reverse_iterator cb = s.crbegin();
+    if (!s.empty())
+    {
+        assert(*cb == s.back());
+    }
+    assert(cb == s.rbegin());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/crend.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/crend.pass.cpp
new file mode 100644
index 0000000..193dd57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/crend.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const_reverse_iterator crend() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    typename S::const_reverse_iterator ce = s.crend();
+    assert(ce == s.rend());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/end.pass.cpp
new file mode 100644
index 0000000..214ba84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/end.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+//       iterator end(); // constexpr since C++20
+// const_iterator end() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    const S& cs = s;
+    typename S::iterator e = s.end();
+    typename S::const_iterator ce = cs.end();
+    if (s.empty())
+    {
+        assert(e == s.begin());
+        assert(ce == cs.begin());
+    }
+    assert(static_cast<std::size_t>(e - s.begin()) == s.size());
+    assert(static_cast<std::size_t>(ce - cs.begin()) == cs.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..b5d1840
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <string>
+
+#include <iterator>
+
+using iterator = std::string::iterator;
+using const_iterator = std::string::const_iterator;
+using reverse_iterator = std::string::reverse_iterator;
+using const_reverse_iterator = std::string::const_reverse_iterator;
+using value_type = char;
+
+static_assert(std::contiguous_iterator<iterator>);
+static_assert(std::indirectly_writable<iterator, value_type>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<iterator, iterator>);
+static_assert(std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<iterator, iterator>);
+static_assert( std::indirectly_movable_storable<iterator, iterator>);
+static_assert(!std::indirectly_movable<iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_movable<iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_iterator>);
+static_assert( std::indirectly_copyable<iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<iterator, const_reverse_iterator>);
+static_assert( std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::contiguous_iterator<const_iterator>);
+static_assert(!std::indirectly_writable<const_iterator, value_type>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_movable<const_iterator, iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_movable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_movable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_movable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_movable_storable<const_iterator, const_reverse_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_iterator>);
+static_assert( std::indirectly_copyable<const_iterator, reverse_iterator>);
+static_assert( std::indirectly_copyable_storable<const_iterator, reverse_iterator>);
+static_assert(!std::indirectly_copyable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_copyable_storable<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/iterators.pass.cpp
new file mode 100644
index 0000000..161c9ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/iterators.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <string>
+
+// iterator       begin(); // constexpr since C++20
+// iterator       end(); // constexpr since C++20
+// const_iterator begin()  const; // constexpr since C++20
+// const_iterator end()    const; // constexpr since C++20
+// const_iterator cbegin() const; // constexpr since C++20
+// const_iterator cend()   const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<class C>
+TEST_CONSTEXPR_CXX20 void test()
+{
+    { // N3644 testing
+        typename C::iterator ii1{}, ii2{};
+        typename C::iterator ii4 = ii1;
+        typename C::const_iterator cii{};
+
+        assert ( ii1 == ii2 );
+        assert ( ii1 == ii4 );
+
+        assert (!(ii1 != ii2 ));
+
+        assert ( (ii1 == cii ));
+        assert ( (cii == ii1 ));
+        assert (!(ii1 != cii ));
+        assert (!(cii != ii1 ));
+        assert (!(ii1 <  cii ));
+        assert (!(cii <  ii1 ));
+        assert ( (ii1 <= cii ));
+        assert ( (cii <= ii1 ));
+        assert (!(ii1 >  cii ));
+        assert (!(cii >  ii1 ));
+        assert ( (ii1 >= cii ));
+        assert ( (cii >= ii1 ));
+        assert (cii - ii1 == 0);
+        assert (ii1 - cii == 0);
+    }
+    {
+        C a;
+        typename C::iterator i1 = a.begin();
+        typename C::iterator i2;
+        i2 = i1;
+        assert ( i1 == i2 );
+    }
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    test<std::string>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring>();
+#endif
+
+#ifndef TEST_HAS_NO_CHAR8_T
+    test<std::u8string>();
+#endif
+
+    test<std::u16string>();
+    test<std::u32string>();
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/rbegin.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/rbegin.pass.cpp
new file mode 100644
index 0000000..d39467e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/rbegin.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+//       reverse_iterator rbegin(); // constexpr since C++20
+// const_reverse_iterator rbegin() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    const S& cs = s;
+    typename S::reverse_iterator b = s.rbegin();
+    typename S::const_reverse_iterator cb = cs.rbegin();
+    if (!s.empty())
+    {
+        assert(*b == s.back());
+    }
+    assert(b == cb);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/rend.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/rend.pass.cpp
new file mode 100644
index 0000000..0002f74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.iterators/rend.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+//       reverse_iterator rend(); // constexpr since C++20
+// const_reverse_iterator rend() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s)
+{
+    const S& cs = s;
+    typename S::reverse_iterator e = s.rend();
+    typename S::const_reverse_iterator ce = cs.rend();
+    if (s.empty())
+    {
+        assert(e == s.rbegin());
+        assert(ce == cs.rbegin());
+    }
+    assert(static_cast<std::size_t>(e - s.rbegin()) == s.size());
+    assert(static_cast<std::size_t>(ce - cs.rbegin()) == cs.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S());
+    test(S("123"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S());
+    test(S("123"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..90b275b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/robust_against_adl.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+template<class T>
+struct Charlike {
+    char ch_;
+    TEST_CONSTEXPR Charlike(char ch) : ch_(ch) {}
+    TEST_CONSTEXPR operator char() const { return ch_; }
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  std::string s;
+  Charlike<Holder<Incomplete> > a[] = {'m', 'a', 'h', 'i'};
+  s.append(a, a+4);
+  s.assign(a, a+4);
+  s.insert(s.begin(), a, a+4);
+  s.replace(s.begin(), s.begin()+4, a, a+4);
+  assert(s == "mahimahi");
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/T_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/T_size_size.pass.cpp
new file mode 100644
index 0000000..5223924
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/T_size_size.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template <class T>
+//    basic_string& append(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20
+
+#include <string>
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, SV sv, typename S::size_type pos, typename S::size_type n, S expected)
+{
+    if (pos <= sv.size())
+    {
+        s.append(sv, pos, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.append(sv, pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, SV sv, typename S::size_type pos, S expected)
+{
+    if (pos <= sv.size())
+    {
+        s.append(sv, pos);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.append(sv, pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(), SV(), 0, 0, S());
+  test(S(), SV(), 1, 0, S());
+  test(S(), SV("12345"), 0, 3, S("123"));
+  test(S(), SV("12345"), 1, 4, S("2345"));
+  test(S(), SV("12345"), 3, 15, S("45"));
+  test(S(), SV("12345"), 5, 15, S(""));
+  test(S(), SV("12345"), 6, 15, S("not happening"));
+  test(S(), SV("12345678901234567890"), 0, 0, S());
+  test(S(), SV("12345678901234567890"), 1, 1, S("2"));
+  test(S(), SV("12345678901234567890"), 2, 3, S("345"));
+  test(S(), SV("12345678901234567890"), 12, 13, S("34567890"));
+  test(S(), SV("12345678901234567890"), 21, 13, S("not happening"));
+
+  test(S("12345"), SV(), 0, 0, S("12345"));
+  test(S("12345"), SV("12345"), 2, 2, S("1234534"));
+  test(S("12345"), SV("1234567890"), 0, 100, S("123451234567890"));
+
+  test(S("12345678901234567890"), SV(), 0, 0, S("12345678901234567890"));
+  test(S("12345678901234567890"), SV("12345"), 1, 3, S("12345678901234567890234"));
+  test(S("12345678901234567890"), SV("12345678901234567890"), 5, 10,
+        S("123456789012345678906789012345"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test_npos(S(), SV(), 0, S());
+    test_npos(S(), SV(), 1, S());
+    test_npos(S(), SV("12345"), 0, S("12345"));
+    test_npos(S(), SV("12345"), 1, S("2345"));
+    test_npos(S(), SV("12345"), 3, S("45"));
+    test_npos(S(), SV("12345"), 5, S(""));
+    test_npos(S(), SV("12345"), 6, S("not happening"));
+  }
+
+  {
+    std::string s;
+    std::string_view sv = "EFGH";
+    char arr[] = "IJKL";
+
+    s.append("CDEF", 0);    // calls append(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    s.append("QRST", 0, std::string::npos); // calls append(string("QRST"), pos, npos)
+    assert(s == "QRST");
+    s.clear();
+
+    s.append(sv, 0);  // calls append(T, pos, npos)
+    assert(s == sv);
+    s.clear();
+
+    s.append(sv, 0, std::string::npos);   // calls append(T, pos, npos)
+    assert(s == sv);
+    s.clear();
+
+    s.append(arr, 0);     // calls append(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    s.append(arr, 0, std::string::npos);    // calls append(string("IJKL"), pos, npos)
+    assert(s == "IJKL");
+    s.clear();
+
+    s.append(arr, 0);     // calls append(const char *, len)
+    assert(s == "");
+    s.clear();
+  }
+
+  {
+    std::string s = "ABCD";
+    std::string_view sv = s;
+    s.append(sv);
+    assert(s == "ABCDABCD");
+
+    sv = s;
+    s.append(sv, 0, std::string::npos);
+    assert(s == "ABCDABCDABCDABCD");
+
+    sv = s;
+    s.append(sv, sv.size());
+    assert(s == "ABCDABCDABCDABCD");
+  }
+
+  {
+    std::string s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    std::string_view sv = s;
+    s.append(sv);
+    assert(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ");
+
+    sv = s;
+    s.append(sv, 0, std::string::npos);
+    assert(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ");
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp
new file mode 100644
index 0000000..ebe4e49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/initializer_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string& append(initializer_list<charT> il); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s("123");
+    s.append({'a', 'b', 'c'});
+    assert(s == "123abc");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s("123");
+    s.append({'a', 'b', 'c'});
+    assert(s == "123abc");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp
new file mode 100644
index 0000000..83b8d8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp
@@ -0,0 +1,212 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class InputIterator>
+//   basic_string& append(InputIterator first, InputIterator last); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test(S s, It first, It last, S expected)
+{
+    s.append(first, last);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Widget { operator char() const { throw 42; } };
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test_exceptions(S s, It first, It last)
+{
+    S original = s;
+    typename S::iterator begin = s.begin();
+    typename S::iterator end = s.end();
+
+    try {
+        s.append(first, last);
+        assert(false);
+    } catch (...) {}
+
+    // Part of "no effects" is that iterators and pointers
+    // into the string must not have been invalidated.
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == original);
+    assert(s.begin() == begin);
+    assert(s.end() == end);
+}
+#endif
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+  test(S(), s, s, S());
+  test(S(), s, s+1, S("A"));
+  test(S(), s, s+10, S("ABCDEFGHIJ"));
+  test(S(), s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345"), s, s, S("12345"));
+  test(S("12345"), s, s+1, S("12345A"));
+  test(S("12345"), s, s+10, S("12345ABCDEFGHIJ"));
+  test(S("12345"), s, s+52, S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("1234567890"), s, s, S("1234567890"));
+  test(S("1234567890"), s, s+1, S("1234567890A"));
+  test(S("1234567890"), s, s+10, S("1234567890ABCDEFGHIJ"));
+  test(S("1234567890"), s, s+52, S("1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345678901234567890"), s, s, S("12345678901234567890"));
+  test(S("12345678901234567890"), s, s+1, S("12345678901234567890""A"));
+  test(S("12345678901234567890"), s, s+10, S("12345678901234567890""ABCDEFGHIJ"));
+  test(S("12345678901234567890"), s, s+52,
+      S("12345678901234567890""ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), S());
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), S("A"));
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("ABCDEFGHIJ"));
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s),
+      S("12345"));
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1),
+      S("12345A"));
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("12345ABCDEFGHIJ"));
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s),
+      S("1234567890"));
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1),
+      S("1234567890A"));
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("1234567890ABCDEFGHIJ"));
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s),
+      S("12345678901234567890"));
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1),
+      S("12345678901234567890""A"));
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("12345678901234567890""ABCDEFGHIJ"));
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("12345678901234567890""ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) { // test iterator operations that throw
+    typedef std::string S;
+    typedef ThrowingIterator<char> TIter;
+    typedef cpp17_input_iterator<TIter> IIter;
+    const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    test_exceptions(S(), IIter(TIter(s, s+10, 4, TIter::TAIncrement)), IIter(TIter()));
+    test_exceptions(S(), IIter(TIter(s, s+10, 5, TIter::TADereference)), IIter(TIter()));
+    test_exceptions(S(), IIter(TIter(s, s+10, 6, TIter::TAComparison)), IIter(TIter()));
+
+    test_exceptions(S(), TIter(s, s+10, 4, TIter::TAIncrement), TIter());
+    test_exceptions(S(), TIter(s, s+10, 5, TIter::TADereference), TIter());
+    test_exceptions(S(), TIter(s, s+10, 6, TIter::TAComparison), TIter());
+
+    Widget w[100];
+    test_exceptions(S(), w, w+100);
+  }
+#endif
+
+  { // test appending to self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.append(s_short.begin(), s_short.end());
+    assert(s_short == "123/123/");
+    s_short.append(s_short.begin(), s_short.end());
+    assert(s_short == "123/123/123/123/");
+    s_short.append(s_short.begin(), s_short.end());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.append(s_long.begin(), s_long.end());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  { // test appending a different type
+    typedef std::string S;
+    const uint8_t p[] = "ABCD";
+
+    S s;
+    s.append(p, p + 4);
+    assert(s == "ABCD");
+  }
+
+  { // regression-test appending to self in sneaky ways
+    std::string s_short = "hello";
+    std::string s_long = "Lorem ipsum dolor sit amet, consectetur/";
+    std::string s_othertype = "hello";
+    std::string s_sneaky = "hello";
+
+    test(s_short, s_short.data() + s_short.size(), s_short.data() + s_short.size() + 1,
+         std::string("hello\0", 6));
+    test(s_long, s_long.data() + s_long.size(), s_long.data() + s_long.size() + 1,
+         std::string("Lorem ipsum dolor sit amet, consectetur/\0", 41));
+
+    s_sneaky.reserve(12);
+    test(s_sneaky, s_sneaky.data(), s_sneaky.data() + 6, std::string("hellohello\0", 11));
+
+     if (!TEST_IS_CONSTANT_EVALUATED) {
+       const unsigned char *first = reinterpret_cast<const unsigned char*>(s_othertype.data());
+       test(s_othertype, first + 2, first + 5, std::string("hellollo"));
+     }
+  }
+
+  { // test with a move iterator that returns char&&
+    typedef forward_iterator<const char*> It;
+    typedef std::move_iterator<It> MoveIt;
+    const char p[] = "ABCD";
+    std::string s;
+    s.append(MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1)));
+    assert(s == "ABCD");
+  }
+  { // test with a move iterator that returns char&&
+    typedef const char* It;
+    typedef std::move_iterator<It> MoveIt;
+    const char p[] = "ABCD";
+    std::string s;
+    s.append(MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1)));
+    assert(s == "ABCD");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp
new file mode 100644
index 0000000..526fed8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>& append(const charT* s); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, const typename S::value_type* str, S expected)
+{
+    s.append(str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), "", S());
+  test(S(), "12345", S("12345"));
+  test(S(), "12345678901234567890", S("12345678901234567890"));
+
+  test(S("12345"), "", S("12345"));
+  test(S("12345"), "12345", S("1234512345"));
+  test(S("12345"), "1234567890", S("123451234567890"));
+
+  test(S("12345678901234567890"), "", S("12345678901234567890"));
+  test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
+  test(S("12345678901234567890"), "12345678901234567890",
+        S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  { // test appending to self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.append(s_short.c_str());
+    assert(s_short == "123/123/");
+    s_short.append(s_short.c_str());
+    assert(s_short == "123/123/123/123/");
+    s_short.append(s_short.c_str());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.append(s_long.c_str());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp
new file mode 100644
index 0000000..57390ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   append(const charT* s, size_type n); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, const typename S::value_type* str, typename S::size_type n, S expected)
+{
+    s.append(str, n);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), "", 0, S());
+  test(S(), "12345", 3, S("123"));
+  test(S(), "12345", 4, S("1234"));
+  test(S(), "12345678901234567890", 0, S());
+  test(S(), "12345678901234567890", 1, S("1"));
+  test(S(), "12345678901234567890", 3, S("123"));
+  test(S(), "12345678901234567890", 20, S("12345678901234567890"));
+
+  test(S("12345"), "", 0, S("12345"));
+  test(S("12345"), "12345", 5, S("1234512345"));
+  test(S("12345"), "1234567890", 10, S("123451234567890"));
+
+  test(S("12345678901234567890"), "", 0, S("12345678901234567890"));
+  test(S("12345678901234567890"), "12345", 5, S("1234567890123456789012345"));
+  test(S("12345678901234567890"), "12345678901234567890", 20,
+        S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  { // test appending to self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.append(s_short.data(), s_short.size());
+    assert(s_short == "123/123/");
+    s_short.append(s_short.data(), s_short.size());
+    assert(s_short == "123/123/123/123/");
+    s_short.append(s_short.data(), s_short.size());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.append(s_long.data(), s_long.size());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp
new file mode 100644
index 0000000..7d9cf9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/push_back.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void push_back(charT c) // constexpr since C++20
+
+#include <string>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+struct VeryLarge {
+  long long a;
+  char b;
+};
+
+namespace std {
+  template <>
+  struct char_traits<VeryLarge> {
+    using char_type           = VeryLarge;
+    using int_type            = int;
+    using off_type            = streamoff;
+    using pos_type            = streampos;
+    using state_type          = mbstate_t;
+
+    static TEST_CONSTEXPR_CXX20 void assign(char_type& c1, const char_type& c2) { c1 = c2; }
+    static bool eq(char_type c1, char_type c2);
+    static bool lt(char_type c1, char_type c2);
+
+    static int compare(const char_type* s1, const char_type* s2, size_t n);
+    static size_t length(const char_type* s);
+    static const char_type* find(const char_type* s, size_t n, const char_type& a);
+    static char_type* move(char_type* s1, const char_type* s2, size_t n);
+    static TEST_CONSTEXPR_CXX20 char_type* copy(char_type* s1, const char_type* s2, size_t n) {
+      std::copy_n(s2, n, s1);
+      return s1;
+    }
+    static TEST_CONSTEXPR_CXX20 char_type* assign(char_type* s, size_t n, char_type a) {
+      std::fill_n(s, n, a);
+      return s;
+    }
+
+    static int_type not_eof(int_type c);
+    static char_type to_char_type(int_type c);
+    static int_type to_int_type(char_type c);
+    static bool eq_int_type(int_type c1, int_type c2);
+    static int_type eof();
+  };
+} // end namespace std
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::value_type c, S expected)
+{
+    s.push_back(c);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(), 'a', S(1, 'a'));
+    test(S("12345"), 'a', S("12345a"));
+    test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(), 'a', S(1, 'a'));
+    test(S("12345"), 'a', S("12345a"));
+    test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
+  }
+#endif
+
+  {
+    // https://llvm.org/PR31454
+    std::basic_string<VeryLarge> s;
+    VeryLarge vl = {};
+    s.push_back(vl);
+    s.push_back(vl);
+    s.push_back(vl);
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/size_char.pass.cpp
new file mode 100644
index 0000000..d6c38d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/size_char.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   append(size_type n, charT c); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type n, typename S::value_type c, S expected)
+{
+    s.append(n, c);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 0, 'a', S());
+  test(S(), 1, 'a', S(1, 'a'));
+  test(S(), 10, 'a', S(10, 'a'));
+  test(S(), 100, 'a', S(100, 'a'));
+
+  test(S("12345"), 0, 'a', S("12345"));
+  test(S("12345"), 1, 'a', S("12345a"));
+  test(S("12345"), 10, 'a', S("12345aaaaaaaaaa"));
+
+  test(S("12345678901234567890"), 0, 'a', S("12345678901234567890"));
+  test(S("12345678901234567890"), 1, 'a', S("12345678901234567890a"));
+  test(S("12345678901234567890"), 10, 'a', S("12345678901234567890aaaaaaaaaa"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp
new file mode 100644
index 0000000..cd4b1a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   append(const basic_string<charT,traits>& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S str, S expected)
+{
+    s.append(str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S(), S());
+  test(S(), S("12345"), S("12345"));
+  test(S(), S("1234567890"), S("1234567890"));
+  test(S(), S("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345"), S(), S("12345"));
+  test(S("12345"), S("12345"), S("1234512345"));
+  test(S("12345"), S("1234567890"), S("123451234567890"));
+  test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
+
+  test(S("1234567890"), S(), S("1234567890"));
+  test(S("1234567890"), S("12345"), S("123456789012345"));
+  test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
+  test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
+
+  test(S("12345678901234567890"), S(), S("12345678901234567890"));
+  test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
+  test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
+  test(S("12345678901234567890"), S("12345678901234567890"),
+        S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#if TEST_STD_VER >= 11
+  {   // LWG 2946
+    std::string s;
+    s.append({"abc", 1});
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_size_size.pass.cpp
new file mode 100644
index 0000000..069775d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_size_size.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   append(const basic_string<charT,traits>& str, size_type pos, size_type n = npos); // constexpr since C++20
+//  the "= npos" was added for C++14
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected)
+{
+    if (pos <= str.size())
+    {
+        s.append(str, pos, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.append(str, pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, S str, typename S::size_type pos, S expected)
+{
+    if (pos <= str.size())
+    {
+        s.append(str, pos);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.append(str, pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S(), 0, 0, S());
+  test(S(), S(), 1, 0, S());
+  test(S(), S("12345"), 0, 3, S("123"));
+  test(S(), S("12345"), 1, 4, S("2345"));
+  test(S(), S("12345"), 3, 15, S("45"));
+  test(S(), S("12345"), 5, 15, S(""));
+  test(S(), S("12345"), 6, 15, S("not happening"));
+  test(S(), S("12345678901234567890"), 0, 0, S());
+  test(S(), S("12345678901234567890"), 1, 1, S("2"));
+  test(S(), S("12345678901234567890"), 2, 3, S("345"));
+  test(S(), S("12345678901234567890"), 12, 13, S("34567890"));
+  test(S(), S("12345678901234567890"), 21, 13, S("not happening"));
+
+  test(S("12345"), S(), 0, 0, S("12345"));
+  test(S("12345"), S("12345"), 2, 2, S("1234534"));
+  test(S("12345"), S("1234567890"), 0, 100, S("123451234567890"));
+
+  test(S("12345678901234567890"), S(), 0, 0, S("12345678901234567890"));
+  test(S("12345678901234567890"), S("12345"), 1, 3, S("12345678901234567890234"));
+  test(S("12345678901234567890"), S("12345678901234567890"), 5, 10,
+        S("123456789012345678906789012345"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  {
+    typedef std::string S;
+    test_npos(S(), S(), 0, S());
+    test_npos(S(), S(), 1, S());
+    test_npos(S(), S("12345"), 0, S("12345"));
+    test_npos(S(), S("12345"), 1, S("2345"));
+    test_npos(S(), S("12345"), 3, S("45"));
+    test_npos(S(), S("12345"), 5, S(""));
+    test_npos(S(), S("12345"), 6, S("not happening"));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_view.pass.cpp
new file mode 100644
index 0000000..c68445e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_append/string_view.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   append(basic_string_view<charT,traits> sv); // constexpr since C++20
+
+#include <string>
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, SV sv, S expected)
+{
+    s.append(sv);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(), SV(), S());
+  test(S(), SV("12345"), S("12345"));
+  test(S(), SV("1234567890"), S("1234567890"));
+  test(S(), SV("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345"), SV(), S("12345"));
+  test(S("12345"), SV("12345"), S("1234512345"));
+  test(S("12345"), SV("1234567890"), S("123451234567890"));
+  test(S("12345"), SV("12345678901234567890"), S("1234512345678901234567890"));
+
+  test(S("1234567890"), SV(), S("1234567890"));
+  test(S("1234567890"), SV("12345"), S("123456789012345"));
+  test(S("1234567890"), SV("1234567890"), S("12345678901234567890"));
+  test(S("1234567890"), SV("12345678901234567890"), S("123456789012345678901234567890"));
+
+  test(S("12345678901234567890"), SV(), S("12345678901234567890"));
+  test(S("12345678901234567890"), SV("12345"), S("1234567890123456789012345"));
+  test(S("12345678901234567890"), SV("1234567890"), S("123456789012345678901234567890"));
+  test(S("12345678901234567890"), SV("12345678901234567890"),
+        S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/T_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/T_size_size.pass.cpp
new file mode 100644
index 0000000..727e198
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/T_size_size.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template <class T>
+//    basic_string& assign(const T& t, size_type pos, size_type n=npos); // C++17, constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, SV sv, typename S::size_type pos, typename S::size_type n, S expected)
+{
+    if (pos <= sv.size())
+    {
+        s.assign(sv, pos, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.assign(sv, pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, SV sv, typename S::size_type pos, S expected)
+{
+    if (pos <= sv.size())
+    {
+        s.assign(sv, pos);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.assign(sv, pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(), SV(), 0, 0, S());
+  test(S(), SV(), 1, 0, S());
+  test(S(), SV("12345"), 0, 3, S("123"));
+  test(S(), SV("12345"), 1, 4, S("2345"));
+  test(S(), SV("12345"), 3, 15, S("45"));
+  test(S(), SV("12345"), 5, 15, S(""));
+  test(S(), SV("12345"), 6, 15, S("not happening"));
+  test(S(), SV("12345678901234567890"), 0, 0, S());
+  test(S(), SV("12345678901234567890"), 1, 1, S("2"));
+  test(S(), SV("12345678901234567890"), 2, 3, S("345"));
+  test(S(), SV("12345678901234567890"), 12, 13, S("34567890"));
+  test(S(), SV("12345678901234567890"), 21, 13, S("not happening"));
+
+  test(S("12345"), SV(), 0, 0, S());
+  test(S("12345"), SV("12345"), 2, 2, S("34"));
+  test(S("12345"), SV("1234567890"), 0, 100, S("1234567890"));
+
+  test(S("12345678901234567890"), SV(), 0, 0, S());
+  test(S("12345678901234567890"), SV("12345"), 1, 3, S("234"));
+  test(S("12345678901234567890"), SV("12345678901234567890"), 5, 10,
+        S("6789012345"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test_npos(S(), SV(), 0, S());
+    test_npos(S(), SV(), 1, S());
+    test_npos(S(), SV("12345"), 0, S("12345"));
+    test_npos(S(), SV("12345"), 1, S("2345"));
+    test_npos(S(), SV("12345"), 3, S("45"));
+    test_npos(S(), SV("12345"), 5, S(""));
+    test_npos(S(), SV("12345"), 6, S("not happening"));
+  }
+
+  {
+    std::string s = "ABCD";
+    std::string_view sv = "EFGH";
+    char arr[] = "IJKL";
+
+    s.assign("CDEF", 0);    // calls assign(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    s.assign("QRST", 0, std::string::npos); // calls assign(string("QRST", pos, len)
+    assert(s == "QRST");
+    s.clear();
+
+    s.assign(sv, 0);  // calls assign(T, pos, npos)
+    assert(s == sv);
+    s.clear();
+
+    s.assign(sv, 0, std::string::npos);   // calls assign(T, pos, npos)
+    assert(s == sv);
+    s.clear();
+
+    s.assign(arr, 0);     // calls assign(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    s.assign(arr, 0, std::string::npos);    // calls assign(string("IJKL"), pos, npos)
+    assert(s == "IJKL");
+    s.clear();
+
+    s.assign(arr, 0);     // calls assign(const char *, len)
+    assert(s == "");
+    s.clear();
+  }
+
+  {
+    std::string s = "ABCD";
+    std::string_view sv = s;
+    s.assign(sv);
+    assert(s == "ABCD");
+
+    sv = s;
+    s.assign(sv, 0, std::string::npos);
+    assert(s == "ABCD");
+  }
+
+  {
+    std::string s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    std::string_view sv = s;
+    s.assign(sv);
+    assert(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+
+    sv = s;
+    s.assign(sv, 0, std::string::npos);
+    assert(s == "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp
new file mode 100644
index 0000000..cee16ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/initializer_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string& assign(initializer_list<charT> il); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s("123");
+    s.assign({'a', 'b', 'c'});
+    assert(s == "abc");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s("123");
+    s.assign({'a', 'b', 'c'});
+    assert(s == "abc");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp
new file mode 100644
index 0000000..3b8d0dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class InputIterator>
+//   basic_string& assign(InputIterator first, InputIterator last); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test(S s, It first, It last, S expected)
+{
+    s.assign(first, last);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Widget { operator char() const { throw 42; } };
+
+template <class S, class It>
+void
+test_exceptions(S s, It first, It last)
+{
+    S original = s;
+    typename S::iterator begin = s.begin();
+    typename S::iterator end = s.end();
+
+    try {
+        s.assign(first, last);
+        assert(false);
+    } catch (...) {}
+
+    // Part of "no effects" is that iterators and pointers
+    // into the string must not have been invalidated.
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == original);
+    assert(s.begin() == begin);
+    assert(s.end() == end);
+}
+#endif
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+  test(S(), s, s, S());
+  test(S(), s, s+1, S("A"));
+  test(S(), s, s+10, S("ABCDEFGHIJ"));
+  test(S(), s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345"), s, s, S());
+  test(S("12345"), s, s+1, S("A"));
+  test(S("12345"), s, s+10, S("ABCDEFGHIJ"));
+  test(S("12345"), s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("1234567890"), s, s, S());
+  test(S("1234567890"), s, s+1, S("A"));
+  test(S("1234567890"), s, s+10, S("ABCDEFGHIJ"));
+  test(S("1234567890"), s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345678901234567890"), s, s, S());
+  test(S("12345678901234567890"), s, s+1, S("A"));
+  test(S("12345678901234567890"), s, s+10, S("ABCDEFGHIJ"));
+  test(S("12345678901234567890"), s, s+52,
+      S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), S());
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), S("A"));
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("ABCDEFGHIJ"));
+  test(S(), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s),
+      S());
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1),
+      S("A"));
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("ABCDEFGHIJ"));
+  test(S("12345"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s),
+      S());
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1),
+      S("A"));
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("ABCDEFGHIJ"));
+  test(S("1234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s),
+      S());
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1),
+      S("A"));
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10),
+      S("ABCDEFGHIJ"));
+  test(S("12345678901234567890"), cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+      S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) { // test iterator operations that throw
+    typedef std::string S;
+    typedef ThrowingIterator<char> TIter;
+    typedef cpp17_input_iterator<TIter> IIter;
+    const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    test_exceptions(S(), IIter(TIter(s, s+10, 4, TIter::TAIncrement)), IIter(TIter()));
+    test_exceptions(S(), IIter(TIter(s, s+10, 5, TIter::TADereference)), IIter(TIter()));
+    test_exceptions(S(), IIter(TIter(s, s+10, 6, TIter::TAComparison)), IIter(TIter()));
+
+    test_exceptions(S(), TIter(s, s+10, 4, TIter::TAIncrement), TIter());
+    test_exceptions(S(), TIter(s, s+10, 5, TIter::TADereference), TIter());
+    test_exceptions(S(), TIter(s, s+10, 6, TIter::TAComparison), TIter());
+
+    Widget w[100];
+    test_exceptions(S(), w, w+100);
+  }
+#endif
+
+  { // test assigning to self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.assign(s_short.begin(), s_short.end());
+    assert(s_short == "123/");
+    s_short.assign(s_short.begin() + 2, s_short.end());
+    assert(s_short == "3/");
+
+    s_long.assign(s_long.begin(), s_long.end());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/");
+
+    s_long.assign(s_long.begin() + 30, s_long.end());
+    assert(s_long == "nsectetur/");
+  }
+
+  { // test assigning a different type
+    typedef std::string S;
+    const uint8_t p[] = "ABCD";
+
+    S s;
+    s.assign(p, p + 4);
+    assert(s == "ABCD");
+  }
+
+  { // regression-test assigning to self in sneaky ways
+    std::string sneaky = "hello";
+    sneaky.resize(sneaky.capacity(), 'x');
+    std::string expected = sneaky + std::string(1, '\0');
+    test(sneaky, sneaky.data(), sneaky.data() + sneaky.size() + 1, expected);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp
new file mode 100644
index 0000000..5148f46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>& assign(const charT* s); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, const typename S::value_type* str, S expected)
+{
+    s.assign(str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), "", S());
+  test(S(), "12345", S("12345"));
+  test(S(), "12345678901234567890", S("12345678901234567890"));
+
+  test(S("12345"), "", S());
+  test(S("12345"), "12345", S("12345"));
+  test(S("12345"), "1234567890", S("1234567890"));
+
+  test(S("12345678901234567890"), "", S());
+  test(S("12345678901234567890"), "12345", S("12345"));
+  test(S("12345678901234567890"), "12345678901234567890",
+        S("12345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  { // test assignment to self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.assign(s_short.c_str());
+    assert(s_short == "123/");
+    s_short.assign(s_short.c_str() + 2);
+    assert(s_short == "3/");
+
+    s_long.assign(s_long.c_str() + 30);
+    assert(s_long == "nsectetur/");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp
new file mode 100644
index 0000000..25a62b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   assign(const charT* s, size_type n); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, const typename S::value_type* str, typename S::size_type n, S expected)
+{
+    s.assign(str, n);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), "", 0, S());
+  test(S(), "12345", 3, S("123"));
+  test(S(), "12345", 4, S("1234"));
+  test(S(), "12345678901234567890", 0, S());
+  test(S(), "12345678901234567890", 1, S("1"));
+  test(S(), "12345678901234567890", 3, S("123"));
+  test(S(), "12345678901234567890", 20, S("12345678901234567890"));
+
+  test(S("12345"), "", 0, S());
+  test(S("12345"), "12345", 5, S("12345"));
+  test(S("12345"), "1234567890", 10, S("1234567890"));
+
+  test(S("12345678901234567890"), "", 0, S());
+  test(S("12345678901234567890"), "12345", 5, S("12345"));
+  test(S("12345678901234567890"), "12345678901234567890", 20,
+        S("12345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  { // test assign to self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.assign(s_short.data(), s_short.size());
+    assert(s_short == "123/");
+    s_short.assign(s_short.data() + 2, s_short.size() - 2);
+    assert(s_short == "3/");
+
+    s_long.assign(s_long.data(), s_long.size());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/");
+
+    s_long.assign(s_long.data() + 2, 8 );
+    assert(s_long == "rem ipsu");
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/rv_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/rv_string.pass.cpp
new file mode 100644
index 0000000..f491ae0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/rv_string.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   assign(basic_string<charT,traits>&& str); // constexpr since C++20
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S str, S expected)
+{
+    s.assign(std::move(str));
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S(), S());
+  test(S(), S("12345"), S("12345"));
+  test(S(), S("1234567890"), S("1234567890"));
+  test(S(), S("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345"), S(), S());
+  test(S("12345"), S("12345"), S("12345"));
+  test(S("12345"), S("1234567890"), S("1234567890"));
+  test(S("12345"), S("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("1234567890"), S(), S());
+  test(S("1234567890"), S("12345"), S("12345"));
+  test(S("1234567890"), S("1234567890"), S("1234567890"));
+  test(S("1234567890"), S("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345678901234567890"), S(), S());
+  test(S("12345678901234567890"), S("12345"), S("12345"));
+  test(S("12345678901234567890"), S("1234567890"), S("1234567890"));
+  test(S("12345678901234567890"), S("12345678901234567890"),
+        S("12345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp
new file mode 100644
index 0000000..82672e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/size_char.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   assign(size_type n, charT c); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type n, typename S::value_type c, S expected)
+{
+    s.assign(n, c);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), 0, 'a', S());
+  test(S(), 1, 'a', S(1, 'a'));
+  test(S(), 10, 'a', S(10, 'a'));
+  test(S(), 100, 'a', S(100, 'a'));
+
+  test(S("12345"), 0, 'a', S());
+  test(S("12345"), 1, 'a', S(1, 'a'));
+  test(S("12345"), 10, 'a', S(10, 'a'));
+
+  test(S("12345678901234567890"), 0, 'a', S());
+  test(S("12345678901234567890"), 1, 'a', S(1, 'a'));
+  test(S("12345678901234567890"), 10, 'a', S(10, 'a'));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string.pass.cpp
new file mode 100644
index 0000000..c0822d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   assign(const basic_string<charT,traits>& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S str, S expected)
+{
+    s.assign(str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+testAlloc(S s, S str, const typename S::allocator_type& a)
+{
+    s.assign(str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == str);
+    assert(s.get_allocator() == a);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(), S(), S());
+    test(S(), S("12345"), S("12345"));
+    test(S(), S("1234567890"), S("1234567890"));
+    test(S(), S("12345678901234567890"), S("12345678901234567890"));
+
+    test(S("12345"), S(), S());
+    test(S("12345"), S("12345"), S("12345"));
+    test(S("12345"), S("1234567890"), S("1234567890"));
+    test(S("12345"), S("12345678901234567890"), S("12345678901234567890"));
+
+    test(S("1234567890"), S(), S());
+    test(S("1234567890"), S("12345"), S("12345"));
+    test(S("1234567890"), S("1234567890"), S("1234567890"));
+    test(S("1234567890"), S("12345678901234567890"), S("12345678901234567890"));
+
+    test(S("12345678901234567890"), S(), S());
+    test(S("12345678901234567890"), S("12345"), S("12345"));
+    test(S("12345678901234567890"), S("1234567890"), S("1234567890"));
+    test(S("12345678901234567890"), S("12345678901234567890"),
+         S("12345678901234567890"));
+
+    testAlloc(S(), S(), std::allocator<char>());
+    testAlloc(S(), S("12345"), std::allocator<char>());
+    testAlloc(S(), S("1234567890"), std::allocator<char>());
+    testAlloc(S(), S("12345678901234567890"), std::allocator<char>());
+  }
+
+  { //  LWG#5579 make sure assign takes the allocators where appropriate
+    typedef other_allocator<char> A;  // has POCCA --> true
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    testAlloc(S(A(5)), S(A(3)), A(3));
+    testAlloc(S(A(5)), S("1"), A());
+    testAlloc(S(A(5)), S("1", A(7)), A(7));
+    testAlloc(S(A(5)), S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)), A(7));
+  }
+
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(), S(), S());
+    test(S(), S("12345"), S("12345"));
+    test(S(), S("1234567890"), S("1234567890"));
+    test(S(), S("12345678901234567890"), S("12345678901234567890"));
+
+    test(S("12345"), S(), S());
+    test(S("12345"), S("12345"), S("12345"));
+    test(S("12345"), S("1234567890"), S("1234567890"));
+    test(S("12345"), S("12345678901234567890"), S("12345678901234567890"));
+
+    test(S("1234567890"), S(), S());
+    test(S("1234567890"), S("12345"), S("12345"));
+    test(S("1234567890"), S("1234567890"), S("1234567890"));
+    test(S("1234567890"), S("12345678901234567890"), S("12345678901234567890"));
+
+    test(S("12345678901234567890"), S(), S());
+    test(S("12345678901234567890"), S("12345"), S("12345"));
+    test(S("12345678901234567890"), S("1234567890"), S("1234567890"));
+    test(S("12345678901234567890"), S("12345678901234567890"),
+         S("12345678901234567890"));
+
+    testAlloc(S(), S(), min_allocator<char>());
+    testAlloc(S(), S("12345"), min_allocator<char>());
+    testAlloc(S(), S("1234567890"), min_allocator<char>());
+    testAlloc(S(), S("12345678901234567890"), min_allocator<char>());
+  }
+#endif
+#if TEST_STD_VER > 14
+  {
+    typedef std::string S;
+    static_assert(noexcept(S().assign(S())), "");  // LWG#2063
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_size_size.pass.cpp
new file mode 100644
index 0000000..4246366
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_size_size.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   assign(const basic_string<charT,traits>& str, size_type pos, size_type n=npos); // constexpr since C++20
+// the =npos was added for C++14
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S str, typename S::size_type pos, typename S::size_type n, S expected)
+{
+    if (pos <= str.size())
+    {
+        s.assign(str, pos, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.assign(str, pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, S str, typename S::size_type pos, S expected)
+{
+    if (pos <= str.size())
+    {
+        s.assign(str, pos);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.assign(str, pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S(), 0, 0, S());
+  test(S(), S(), 1, 0, S());
+  test(S(), S("12345"), 0, 3, S("123"));
+  test(S(), S("12345"), 1, 4, S("2345"));
+  test(S(), S("12345"), 3, 15, S("45"));
+  test(S(), S("12345"), 5, 15, S(""));
+  test(S(), S("12345"), 6, 15, S("not happening"));
+  test(S(), S("12345678901234567890"), 0, 0, S());
+  test(S(), S("12345678901234567890"), 1, 1, S("2"));
+  test(S(), S("12345678901234567890"), 2, 3, S("345"));
+  test(S(), S("12345678901234567890"), 12, 13, S("34567890"));
+  test(S(), S("12345678901234567890"), 21, 13, S("not happening"));
+
+  test(S("12345"), S(), 0, 0, S());
+  test(S("12345"), S("12345"), 2, 2, S("34"));
+  test(S("12345"), S("1234567890"), 0, 100, S("1234567890"));
+
+  test(S("12345678901234567890"), S(), 0, 0, S());
+  test(S("12345678901234567890"), S("12345"), 1, 3, S("234"));
+  test(S("12345678901234567890"), S("12345678901234567890"), 5, 10,
+        S("6789012345"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  {
+    typedef std::string S;
+    test_npos(S(), S(), 0, S());
+    test_npos(S(), S(), 1, S());
+    test_npos(S(), S("12345"), 0, S("12345"));
+    test_npos(S(), S("12345"), 1, S("2345"));
+    test_npos(S(), S("12345"), 3, S("45"));
+    test_npos(S(), S("12345"), 5, S(""));
+    test_npos(S(), S("12345"), 6, S("not happening"));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_view.pass.cpp
new file mode 100644
index 0000000..2a07424
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_assign/string_view.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   assign(basic_string_view<charT,traits> sv); // constexpr since C++20
+
+#include <string>
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, SV sv, S expected)
+{
+    s.assign(sv);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+testAlloc(S s, SV sv, const typename S::allocator_type& a)
+{
+    s.assign(sv);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == sv);
+    assert(s.get_allocator() == a);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(), SV(), S());
+  test(S(), SV("12345"), S("12345"));
+  test(S(), SV("1234567890"), S("1234567890"));
+  test(S(), SV("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345"), SV(), S());
+  test(S("12345"), SV("12345"), S("12345"));
+  test(S("12345"), SV("1234567890"), S("1234567890"));
+  test(S("12345"), SV("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("1234567890"), SV(), S());
+  test(S("1234567890"), SV("12345"), S("12345"));
+  test(S("1234567890"), SV("1234567890"), S("1234567890"));
+  test(S("1234567890"), SV("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345678901234567890"), SV(), S());
+  test(S("12345678901234567890"), SV("12345"), S("12345"));
+  test(S("12345678901234567890"), SV("1234567890"), S("1234567890"));
+  test(S("12345678901234567890"), SV("12345678901234567890"),
+        S("12345678901234567890"));
+
+  using A = typename S::allocator_type;
+
+  testAlloc(S(), SV(), A());
+  testAlloc(S(), SV("12345"), A());
+  testAlloc(S(), SV("1234567890"), A());
+  testAlloc(S(), SV("12345678901234567890"), A());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
new file mode 100644
index 0000000..9c8c018
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type copy(charT* s, size_type n, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S str, typename S::value_type* s, typename S::size_type n,
+     typename S::size_type pos)
+{
+    const S& cs = str;
+    if (pos <= cs.size())
+    {
+        typename S::size_type r = cs.copy(s, n, pos);
+        typename S::size_type rlen = std::min(n, cs.size() - pos);
+        assert(r == rlen);
+        for (r = 0; r < rlen; ++r)
+            assert(S::traits_type::eq(cs[pos+r], s[r]));
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            typename S::size_type r = cs.copy(s, n, pos);
+            ((void)r); // Prevent unused warning
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  char s[50];
+  test(S(""), s, 0, 0);
+  test(S(""), s, 0, 1);
+  test(S(""), s, 1, 0);
+  test(S("abcde"), s, 0, 0);
+  test(S("abcde"), s, 0, 1);
+  test(S("abcde"), s, 0, 2);
+  test(S("abcde"), s, 0, 4);
+  test(S("abcde"), s, 0, 5);
+  test(S("abcde"), s, 0, 6);
+  test(S("abcde"), s, 1, 0);
+  test(S("abcde"), s, 1, 1);
+  test(S("abcde"), s, 1, 2);
+  test(S("abcde"), s, 1, 4);
+  test(S("abcde"), s, 1, 5);
+  test(S("abcde"), s, 2, 0);
+  test(S("abcde"), s, 2, 1);
+  test(S("abcde"), s, 2, 2);
+  test(S("abcde"), s, 2, 4);
+  test(S("abcde"), s, 4, 0);
+  test(S("abcde"), s, 4, 1);
+  test(S("abcde"), s, 4, 2);
+  test(S("abcde"), s, 5, 0);
+  test(S("abcde"), s, 5, 1);
+  test(S("abcde"), s, 6, 0);
+  test(S("abcdefghijklmnopqrst"), s, 0, 0);
+  test(S("abcdefghijklmnopqrst"), s, 0, 1);
+  test(S("abcdefghijklmnopqrst"), s, 0, 2);
+  test(S("abcdefghijklmnopqrst"), s, 0, 10);
+  test(S("abcdefghijklmnopqrst"), s, 0, 19);
+  test(S("abcdefghijklmnopqrst"), s, 0, 20);
+  test(S("abcdefghijklmnopqrst"), s, 0, 21);
+  test(S("abcdefghijklmnopqrst"), s, 1, 0);
+  test(S("abcdefghijklmnopqrst"), s, 1, 1);
+  test(S("abcdefghijklmnopqrst"), s, 1, 2);
+  test(S("abcdefghijklmnopqrst"), s, 1, 9);
+  test(S("abcdefghijklmnopqrst"), s, 1, 18);
+  test(S("abcdefghijklmnopqrst"), s, 1, 19);
+  test(S("abcdefghijklmnopqrst"), s, 1, 20);
+  test(S("abcdefghijklmnopqrst"), s, 2, 0);
+  test(S("abcdefghijklmnopqrst"), s, 2, 1);
+  test(S("abcdefghijklmnopqrst"), s, 2, 2);
+  test(S("abcdefghijklmnopqrst"), s, 2, 9);
+  test(S("abcdefghijklmnopqrst"), s, 2, 17);
+  test(S("abcdefghijklmnopqrst"), s, 2, 18);
+  test(S("abcdefghijklmnopqrst"), s, 2, 19);
+  test(S("abcdefghijklmnopqrst"), s, 10, 0);
+  test(S("abcdefghijklmnopqrst"), s, 10, 1);
+  test(S("abcdefghijklmnopqrst"), s, 10, 2);
+  test(S("abcdefghijklmnopqrst"), s, 10, 5);
+  test(S("abcdefghijklmnopqrst"), s, 10, 9);
+  test(S("abcdefghijklmnopqrst"), s, 10, 10);
+  test(S("abcdefghijklmnopqrst"), s, 10, 11);
+  test(S("abcdefghijklmnopqrst"), s, 19, 0);
+  test(S("abcdefghijklmnopqrst"), s, 19, 1);
+  test(S("abcdefghijklmnopqrst"), s, 19, 2);
+  test(S("abcdefghijklmnopqrst"), s, 20, 0);
+  test(S("abcdefghijklmnopqrst"), s, 20, 1);
+  test(S("abcdefghijklmnopqrst"), s, 21, 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter.pass.cpp
new file mode 100644
index 0000000..dde2e65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// iterator erase(const_iterator p); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::difference_type pos, S expected)
+{
+    typename S::const_iterator p = s.begin() + pos;
+    typename S::iterator i = s.erase(p);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s[s.size()] == typename S::value_type());
+    assert(s == expected);
+    assert(i - s.begin() == pos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S("abcde"), 0, S("bcde"));
+  test(S("abcde"), 1, S("acde"));
+  test(S("abcde"), 2, S("abde"));
+  test(S("abcde"), 4, S("abcd"));
+  test(S("abcdefghij"), 0, S("bcdefghij"));
+  test(S("abcdefghij"), 1, S("acdefghij"));
+  test(S("abcdefghij"), 5, S("abcdeghij"));
+  test(S("abcdefghij"), 9, S("abcdefghi"));
+  test(S("abcdefghijklmnopqrst"), 0, S("bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, S("acdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, S("abcdefghijlmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, S("abcdefghijklmnopqrs"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter_iter.pass.cpp
new file mode 100644
index 0000000..7976ab3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/iter_iter.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// iterator erase(const_iterator first, const_iterator last); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::difference_type pos, typename S::difference_type n, S expected)
+{
+    typename S::const_iterator first = s.cbegin() + pos;
+    typename S::const_iterator last = s.cbegin() + pos + n;
+    typename S::iterator i = s.erase(first, last);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s[s.size()] == typename S::value_type());
+    assert(s == expected);
+    assert(i - s.begin() == pos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, 0, S(""));
+  test(S("abcde"), 0, 0, S("abcde"));
+  test(S("abcde"), 0, 1, S("bcde"));
+  test(S("abcde"), 0, 2, S("cde"));
+  test(S("abcde"), 0, 4, S("e"));
+  test(S("abcde"), 0, 5, S(""));
+  test(S("abcde"), 1, 0, S("abcde"));
+  test(S("abcde"), 1, 1, S("acde"));
+  test(S("abcde"), 1, 2, S("ade"));
+  test(S("abcde"), 1, 3, S("ae"));
+  test(S("abcde"), 1, 4, S("a"));
+  test(S("abcde"), 2, 0, S("abcde"));
+  test(S("abcde"), 2, 1, S("abde"));
+  test(S("abcde"), 2, 2, S("abe"));
+  test(S("abcde"), 2, 3, S("ab"));
+  test(S("abcde"), 4, 0, S("abcde"));
+  test(S("abcde"), 4, 1, S("abcd"));
+  test(S("abcde"), 5, 0, S("abcde"));
+  test(S("abcdefghij"), 0, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 0, 1, S("bcdefghij"));
+  test(S("abcdefghij"), 0, 5, S("fghij"));
+  test(S("abcdefghij"), 0, 9, S("j"));
+  test(S("abcdefghij"), 0, 10, S(""));
+  test(S("abcdefghij"), 1, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 1, 1, S("acdefghij"));
+  test(S("abcdefghij"), 1, 4, S("afghij"));
+  test(S("abcdefghij"), 1, 8, S("aj"));
+  test(S("abcdefghij"), 1, 9, S("a"));
+  test(S("abcdefghij"), 5, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 5, 1, S("abcdeghij"));
+  test(S("abcdefghij"), 5, 2, S("abcdehij"));
+  test(S("abcdefghij"), 5, 4, S("abcdej"));
+  test(S("abcdefghij"), 5, 5, S("abcde"));
+  test(S("abcdefghij"), 9, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 9, 1, S("abcdefghi"));
+  test(S("abcdefghij"), 10, 0, S("abcdefghij"));
+  test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 1, S("bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 10, S("klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 19, S("t"));
+  test(S("abcdefghijklmnopqrst"), 0, 20, S(""));
+  test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 1, S("acdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 9, S("aklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 18, S("at"));
+  test(S("abcdefghijklmnopqrst"), 1, 19, S("a"));
+  test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijlmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijpqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijt"));
+  test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"));
+  test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrs"));
+  test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/pop_back.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/pop_back.pass.cpp
new file mode 100644
index 0000000..28c8d05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/pop_back.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void pop_back(); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S expected)
+{
+    s.pop_back();
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s[s.size()] == typename S::value_type());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S("abcde"), S("abcd"));
+  test(S("abcdefghij"), S("abcdefghi"));
+  test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrs"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/size_size.pass.cpp
new file mode 100644
index 0000000..28b6507
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_erase/size_size.pass.cpp
@@ -0,0 +1,212 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   erase(size_type pos = 0, size_type n = npos); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, typename S::size_type n, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.erase(pos, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s[s.size()] == typename S::value_type());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.erase(pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.erase(pos);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s[s.size()] == typename S::value_type());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.erase(pos);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S expected)
+{
+    s.erase();
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s[s.size()] == typename S::value_type());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, 0, S(""));
+  test(S(""), 0, 1, S(""));
+  test(S(""), 1, 0, S("can't happen"));
+  test(S("abcde"), 0, 0, S("abcde"));
+  test(S("abcde"), 0, 1, S("bcde"));
+  test(S("abcde"), 0, 2, S("cde"));
+  test(S("abcde"), 0, 4, S("e"));
+  test(S("abcde"), 0, 5, S(""));
+  test(S("abcde"), 0, 6, S(""));
+  test(S("abcde"), 1, 0, S("abcde"));
+  test(S("abcde"), 1, 1, S("acde"));
+  test(S("abcde"), 1, 2, S("ade"));
+  test(S("abcde"), 1, 3, S("ae"));
+  test(S("abcde"), 1, 4, S("a"));
+  test(S("abcde"), 1, 5, S("a"));
+  test(S("abcde"), 2, 0, S("abcde"));
+  test(S("abcde"), 2, 1, S("abde"));
+  test(S("abcde"), 2, 2, S("abe"));
+  test(S("abcde"), 2, 3, S("ab"));
+  test(S("abcde"), 2, 4, S("ab"));
+  test(S("abcde"), 4, 0, S("abcde"));
+  test(S("abcde"), 4, 1, S("abcd"));
+  test(S("abcde"), 4, 2, S("abcd"));
+  test(S("abcde"), 5, 0, S("abcde"));
+  test(S("abcde"), 5, 1, S("abcde"));
+  test(S("abcde"), 6, 0, S("can't happen"));
+  test(S("abcdefghij"), 0, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 0, 1, S("bcdefghij"));
+  test(S("abcdefghij"), 0, 5, S("fghij"));
+  test(S("abcdefghij"), 0, 9, S("j"));
+  test(S("abcdefghij"), 0, 10, S(""));
+  test(S("abcdefghij"), 0, 11, S(""));
+  test(S("abcdefghij"), 1, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 1, 1, S("acdefghij"));
+  test(S("abcdefghij"), 1, 4, S("afghij"));
+  test(S("abcdefghij"), 1, 8, S("aj"));
+  test(S("abcdefghij"), 1, 9, S("a"));
+  test(S("abcdefghij"), 1, 10, S("a"));
+  test(S("abcdefghij"), 5, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 5, 1, S("abcdeghij"));
+  test(S("abcdefghij"), 5, 2, S("abcdehij"));
+  test(S("abcdefghij"), 5, 4, S("abcdej"));
+  test(S("abcdefghij"), 5, 5, S("abcde"));
+  test(S("abcdefghij"), 5, 6, S("abcde"));
+  test(S("abcdefghij"), 9, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 9, 1, S("abcdefghi"));
+  test(S("abcdefghij"), 9, 2, S("abcdefghi"));
+  test(S("abcdefghij"), 10, 0, S("abcdefghij"));
+  test(S("abcdefghij"), 10, 1, S("abcdefghij"));
+  test(S("abcdefghij"), 11, 0, S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 1, S("bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 10, S("klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 19, S("t"));
+  test(S("abcdefghijklmnopqrst"), 0, 20, S(""));
+  test(S("abcdefghijklmnopqrst"), 0, 21, S(""));
+  test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 1, S("acdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 9, S("aklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 18, S("at"));
+  test(S("abcdefghijklmnopqrst"), 1, 19, S("a"));
+  test(S("abcdefghijklmnopqrst"), 1, 20, S("a"));
+  test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijlmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijpqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijt"));
+  test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"));
+  test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"));
+  test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrs"));
+  test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrs"));
+  test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 21, 0, S("can't happen"));
+
+  test(S(""), 0, S(""));
+  test(S(""), 1, S("can't happen"));
+  test(S("abcde"), 0, S(""));
+  test(S("abcde"), 1, S("a"));
+  test(S("abcde"), 2, S("ab"));
+  test(S("abcde"), 4, S("abcd"));
+  test(S("abcde"), 5, S("abcde"));
+  test(S("abcde"), 6, S("can't happen"));
+  test(S("abcdefghij"), 0, S(""));
+  test(S("abcdefghij"), 1, S("a"));
+  test(S("abcdefghij"), 5, S("abcde"));
+  test(S("abcdefghij"), 9, S("abcdefghi"));
+  test(S("abcdefghij"), 10, S("abcdefghij"));
+  test(S("abcdefghij"), 11, S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 0, S(""));
+  test(S("abcdefghijklmnopqrst"), 1, S("a"));
+  test(S("abcdefghijklmnopqrst"), 10, S("abcdefghij"));
+  test(S("abcdefghijklmnopqrst"), 19, S("abcdefghijklmnopqrs"));
+  test(S("abcdefghijklmnopqrst"), 20, S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 21, S("can't happen"));
+
+  test(S(""), S(""));
+  test(S("abcde"), S(""));
+  test(S("abcdefghij"), S(""));
+  test(S("abcdefghijklmnopqrst"), S(""));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_char.pass.cpp
new file mode 100644
index 0000000..0e5eb1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_char.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// iterator insert(const_iterator p, charT c); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S& s, typename S::const_iterator p, typename S::value_type c, S expected)
+{
+    bool sufficient_cap = s.size() < s.capacity();
+    typename S::difference_type pos = p - s.begin();
+    typename S::iterator i = s.insert(p, c);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    assert(i - s.begin() == pos);
+    assert(*i == c);
+    if (sufficient_cap)
+        assert(i == p);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  S s;
+  test(s, s.begin(), '1', S("1"));
+  test(s, s.begin(), 'a', S("a1"));
+  test(s, s.end(), 'b', S("a1b"));
+  test(s, s.end()-1, 'c', S("a1cb"));
+  test(s, s.end()-2, 'd', S("a1dcb"));
+  test(s, s.end()-3, '2', S("a12dcb"));
+  test(s, s.end()-4, '3', S("a132dcb"));
+  test(s, s.end()-5, '4', S("a1432dcb"));
+  test(s, s.begin()+1, '5', S("a51432dcb"));
+  test(s, s.begin()+2, '6', S("a561432dcb"));
+  test(s, s.begin()+3, '7', S("a5671432dcb"));
+  test(s, s.begin()+4, 'A', S("a567A1432dcb"));
+  test(s, s.begin()+5, 'B', S("a567AB1432dcb"));
+  test(s, s.begin()+6, 'C', S("a567ABC1432dcb"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp
new file mode 100644
index 0000000..622afad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_initializer_list.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// iterator insert(const_iterator p, initializer_list<charT> il); // constexpr since C++20
+
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s("123456");
+    std::string::iterator i = s.insert(s.begin() + 3, {'a', 'b', 'c'});
+    assert(i - s.begin() == 3);
+    assert(s == "123abc456");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s("123456");
+    S::iterator i = s.insert(s.begin() + 3, {'a', 'b', 'c'});
+    assert(i - s.begin() == 3);
+    assert(s == "123abc456");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.infinite_recursion.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.infinite_recursion.pass.cpp
new file mode 100644
index 0000000..f5c492f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.infinite_recursion.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Make sure basic_string::insert does not cause infinite recursion.
+// This is a regression test for a bug that had been introduced in D98573.
+
+#include <algorithm>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+struct char_ascii {
+    char char_;
+
+    char_ascii() = default;
+    char_ascii(char ch) : char_(ch) {
+        assert(ch <= 0x7f);
+    }
+};
+
+template <>
+struct std::char_traits<char_ascii> {
+    using char_type = char_ascii;
+    using int_type = typename std::char_traits<char>::int_type;
+    using off_type = typename std::char_traits<char>::off_type;
+    using pos_type = typename std::char_traits<char>::pos_type;
+    using state_type = typename std::char_traits<char>::state_type;
+
+    static void assign(char_type& r, char_type const& a) TEST_NOEXCEPT {
+        r = a;
+    }
+
+    static char_type* assign(char_type* p, std::size_t count, char_type a) {
+        std::fill(p, p + count, a);
+        return p;
+    }
+
+    static bool eq(char_type a, char_type b) TEST_NOEXCEPT {
+        return a.char_ == b.char_;
+    }
+
+    static bool lt(char_type a, char_type b) TEST_NOEXCEPT {
+        return a.char_ < b.char_;
+    }
+
+    static std::size_t length(char_type const* s) {
+        std::size_t n = 0;
+        if (s) {
+            while (s->char_)
+                ++n;
+        }
+        return n;
+    }
+
+    static const char_type* find(char_type const* p, std::size_t count, char_type const& ch) {
+        while (count > 0) {
+            if (p->char_ == ch.char_) {
+                return p;
+            } else {
+                ++p;
+                --count;
+            }
+        }
+        return nullptr;
+    }
+
+    static int compare(char_type const* s1, char_type const* s2, std::size_t count) {
+        for (std::size_t i = 0; i < count; ++i) {
+            if (s1->char_ < s2->char_)
+                return -1;
+            else if (s2->char_ < s1->char_)
+                return 1;
+        }
+        return 0;
+    }
+
+    static char_type* move(char_type* dest, char_type const* src, std::size_t count) {
+        if (src <= dest && dest < src + count) {
+            std::copy_backward(src, src + count, dest + count);
+        } else {
+            std::copy(src, src + count, dest);
+        }
+        return dest;
+    }
+
+    static char_type* copy(char_type* dest, char_type const* src, std::size_t count) {
+        return char_traits::move(dest, src, count);
+    }
+};
+
+int main(int, char**) {
+    std::basic_string<char_ascii> str;
+
+    char_ascii ch('A');
+    str.insert(str.begin(), &ch, &ch + 1);
+    assert(str.size() == 1);
+    assert(str[0].char_ == 'A');
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..fb32892
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp
@@ -0,0 +1,203 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class InputIterator>
+//   iterator insert(const_iterator p, InputIterator first, InputIterator last); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+#include "min_allocator.h"
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::difference_type pos, It first, It last, S expected)
+{
+    typename S::const_iterator p = s.cbegin() + pos;
+    typename S::iterator i = s.insert(p, first, last);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(i - s.begin() == pos);
+    assert(s == expected);
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Widget { operator char() const { throw 42; } };
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test_exceptions(S s, typename S::difference_type pos, It first, It last)
+{
+    typename S::const_iterator p = s.cbegin() + pos;
+
+    S original = s;
+    typename S::iterator begin = s.begin();
+    typename S::iterator end = s.end();
+
+    try {
+        s.insert(p, first, last);
+        assert(false);
+    } catch (...) {}
+
+    // Part of "no effects" is that iterators and pointers
+    // into the string must not have been invalidated.
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == original);
+    assert(s.begin() == begin);
+    assert(s.end() == end);
+}
+#endif
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+  test(S(), 0, s, s, S());
+  test(S(), 0, s, s+1, S("A"));
+  test(S(), 0, s, s+10, S("ABCDEFGHIJ"));
+  test(S(), 0, s, s+52, S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345"), 0, s, s, S("12345"));
+  test(S("12345"), 1, s, s+1, S("1A2345"));
+  test(S("12345"), 4, s, s+10, S("1234ABCDEFGHIJ5"));
+  test(S("12345"), 5, s, s+52, S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("1234567890"), 0, s, s, S("1234567890"));
+  test(S("1234567890"), 1, s, s+1, S("1A234567890"));
+  test(S("1234567890"), 10, s, s+10, S("1234567890ABCDEFGHIJ"));
+  test(S("1234567890"), 8, s, s+52, S("12345678ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz90"));
+
+  test(S("12345678901234567890"), 3, s, s, S("12345678901234567890"));
+  test(S("12345678901234567890"), 3, s, s+1, S("123A45678901234567890"));
+  test(S("12345678901234567890"), 15, s, s+10, S("123456789012345ABCDEFGHIJ67890"));
+  test(S("12345678901234567890"), 20, s, s+52,
+        S("12345678901234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S(), 0, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), S());
+  test(S(), 0, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), S("A"));
+  test(S(), 0, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), S("ABCDEFGHIJ"));
+  test(S(), 0, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52), S("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("12345"), 0, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), S("12345"));
+  test(S("12345"), 1, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), S("1A2345"));
+  test(S("12345"), 4, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), S("1234ABCDEFGHIJ5"));
+  test(S("12345"), 5, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52), S("12345ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+
+  test(S("1234567890"), 0, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), S("1234567890"));
+  test(S("1234567890"), 1, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), S("1A234567890"));
+  test(S("1234567890"), 10, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), S("1234567890ABCDEFGHIJ"));
+  test(S("1234567890"), 8, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52), S("12345678ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz90"));
+
+  test(S("12345678901234567890"), 3, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s), S("12345678901234567890"));
+  test(S("12345678901234567890"), 3, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+1), S("123A45678901234567890"));
+  test(S("12345678901234567890"), 15, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+10), S("123456789012345ABCDEFGHIJ67890"));
+  test(S("12345678901234567890"), 20, cpp17_input_iterator<const char*>(s), cpp17_input_iterator<const char*>(s+52),
+        S("12345678901234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) { // test iterator operations that throw
+    typedef std::string S;
+    typedef ThrowingIterator<char> TIter;
+    typedef cpp17_input_iterator<TIter> IIter;
+    const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    test_exceptions(S(), 0, IIter(TIter(s, s+10, 4, TIter::TAIncrement)), IIter(TIter()));
+    test_exceptions(S(), 0, IIter(TIter(s, s+10, 5, TIter::TADereference)), IIter(TIter()));
+    test_exceptions(S(), 0, IIter(TIter(s, s+10, 6, TIter::TAComparison)), IIter(TIter()));
+
+    test_exceptions(S(), 0, TIter(s, s+10, 4, TIter::TAIncrement), TIter());
+    test_exceptions(S(), 0, TIter(s, s+10, 5, TIter::TADereference), TIter());
+    test_exceptions(S(), 0, TIter(s, s+10, 6, TIter::TAComparison), TIter());
+
+    Widget w[100];
+    test_exceptions(S(), 0, w, w+100);
+  }
+#endif
+
+  { // test inserting into self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.insert(s_short.begin(), s_short.begin(), s_short.end());
+    assert(s_short == "123/123/");
+    s_short.insert(s_short.begin(), s_short.begin(), s_short.end());
+    assert(s_short == "123/123/123/123/");
+    s_short.insert(s_short.begin(), s_short.begin(), s_short.end());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.insert(s_long.begin(), s_long.begin(), s_long.end());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  { // test assigning a different type
+    typedef std::string S;
+    const uint8_t p[] = "ABCD";
+
+    S s;
+    s.insert(s.begin(), p, p + 4);
+    assert(s == "ABCD");
+  }
+
+  if (!TEST_IS_CONSTANT_EVALUATED) { // regression-test inserting into self in sneaky ways
+    std::string s_short = "hello";
+    std::string s_long = "Lorem ipsum dolor sit amet, consectetur/";
+    std::string s_othertype = "hello";
+    const unsigned char *first = reinterpret_cast<const unsigned char*>(s_othertype.data());
+
+    test(s_short, 0, s_short.data() + s_short.size(), s_short.data() + s_short.size() + 1,
+         std::string("\0hello", 6));
+    test(s_long, 0, s_long.data() + s_long.size(), s_long.data() + s_long.size() + 1,
+         std::string("\0Lorem ipsum dolor sit amet, consectetur/", 41));
+    test(s_othertype, 1, first + 2, first + 5, std::string("hlloello"));
+  }
+
+  { // test with a move iterator that returns char&&
+    typedef cpp17_input_iterator<const char*> It;
+    typedef std::move_iterator<It> MoveIt;
+    const char p[] = "ABCD";
+    std::string s;
+    s.insert(s.begin(), MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1)));
+    assert(s == "ABCD");
+  }
+  { // test with a move iterator that returns char&&
+    typedef forward_iterator<const char*> It;
+    typedef std::move_iterator<It> MoveIt;
+    const char p[] = "ABCD";
+    std::string s;
+    s.insert(s.begin(), MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1)));
+    assert(s == "ABCD");
+  }
+  { // test with a move iterator that returns char&&
+    typedef const char* It;
+    typedef std::move_iterator<It> MoveIt;
+    const char p[] = "ABCD";
+    std::string s;
+    s.insert(s.begin(), MoveIt(It(std::begin(p))), MoveIt(It(std::end(p) - 1)));
+    assert(s == "ABCD");
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_size_char.pass.cpp
new file mode 100644
index 0000000..a79b534
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/iter_size_char.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// iterator insert(const_iterator p, size_type n, charT c); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::difference_type pos, typename S::size_type n,
+     typename S::value_type c, S expected)
+{
+    typename S::const_iterator p = s.cbegin() + pos;
+    typename S::iterator i = s.insert(p, n, c);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(i - s.begin() == pos);
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, 0, '1', S(""));
+  test(S(""), 0, 5, '1', S("11111"));
+  test(S(""), 0, 10, '1', S("1111111111"));
+  test(S(""), 0, 20, '1', S("11111111111111111111"));
+  test(S("abcde"), 0, 0, '1', S("abcde"));
+  test(S("abcde"), 0, 5, '1', S("11111abcde"));
+  test(S("abcde"), 0, 10, '1', S("1111111111abcde"));
+  test(S("abcde"), 0, 20, '1', S("11111111111111111111abcde"));
+  test(S("abcde"), 1, 0, '1', S("abcde"));
+  test(S("abcde"), 1, 5, '1', S("a11111bcde"));
+  test(S("abcde"), 1, 10, '1', S("a1111111111bcde"));
+  test(S("abcde"), 1, 20, '1', S("a11111111111111111111bcde"));
+  test(S("abcde"), 2, 0, '1', S("abcde"));
+  test(S("abcde"), 2, 5, '1', S("ab11111cde"));
+  test(S("abcde"), 2, 10, '1', S("ab1111111111cde"));
+  test(S("abcde"), 2, 20, '1', S("ab11111111111111111111cde"));
+  test(S("abcde"), 4, 0, '1', S("abcde"));
+  test(S("abcde"), 4, 5, '1', S("abcd11111e"));
+  test(S("abcde"), 4, 10, '1', S("abcd1111111111e"));
+  test(S("abcde"), 4, 20, '1', S("abcd11111111111111111111e"));
+  test(S("abcde"), 5, 0, '1', S("abcde"));
+  test(S("abcde"), 5, 5, '1', S("abcde11111"));
+  test(S("abcde"), 5, 10, '1', S("abcde1111111111"));
+  test(S("abcde"), 5, 20, '1', S("abcde11111111111111111111"));
+  test(S("abcdefghij"), 0, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 0, 5, '1', S("11111abcdefghij"));
+  test(S("abcdefghij"), 0, 10, '1', S("1111111111abcdefghij"));
+  test(S("abcdefghij"), 0, 20, '1', S("11111111111111111111abcdefghij"));
+  test(S("abcdefghij"), 1, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 1, 5, '1', S("a11111bcdefghij"));
+  test(S("abcdefghij"), 1, 10, '1', S("a1111111111bcdefghij"));
+  test(S("abcdefghij"), 1, 20, '1', S("a11111111111111111111bcdefghij"));
+  test(S("abcdefghij"), 5, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 5, 5, '1', S("abcde11111fghij"));
+  test(S("abcdefghij"), 5, 10, '1', S("abcde1111111111fghij"));
+  test(S("abcdefghij"), 5, 20, '1', S("abcde11111111111111111111fghij"));
+  test(S("abcdefghij"), 9, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 9, 5, '1', S("abcdefghi11111j"));
+  test(S("abcdefghij"), 9, 10, '1', S("abcdefghi1111111111j"));
+  test(S("abcdefghij"), 9, 20, '1', S("abcdefghi11111111111111111111j"));
+  test(S("abcdefghij"), 10, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 10, 5, '1', S("abcdefghij11111"));
+  test(S("abcdefghij"), 10, 10, '1', S("abcdefghij1111111111"));
+  test(S("abcdefghij"), 10, 20, '1', S("abcdefghij11111111111111111111"));
+  test(S("abcdefghijklmnopqrst"), 0, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 5, '1', S("11111abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 10, '1', S("1111111111abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 20, '1', S("11111111111111111111abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 5, '1', S("a11111bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 10, '1', S("a1111111111bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 20, '1', S("a11111111111111111111bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 5, '1', S("abcdefghij11111klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 10, '1', S("abcdefghij1111111111klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 20, '1', S("abcdefghij11111111111111111111klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, 5, '1', S("abcdefghijklmnopqrs11111t"));
+  test(S("abcdefghijklmnopqrst"), 19, 10, '1', S("abcdefghijklmnopqrs1111111111t"));
+  test(S("abcdefghijklmnopqrst"), 19, 20, '1', S("abcdefghijklmnopqrs11111111111111111111t"));
+  test(S("abcdefghijklmnopqrst"), 20, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 20, 5, '1', S("abcdefghijklmnopqrst11111"));
+  test(S("abcdefghijklmnopqrst"), 20, 10, '1', S("abcdefghijklmnopqrst1111111111"));
+  test(S("abcdefghijklmnopqrst"), 20, 20, '1', S("abcdefghijklmnopqrst11111111111111111111"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_T_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_T_size_size.pass.cpp
new file mode 100644
index 0000000..36e1261
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_T_size_size.pass.cpp
@@ -0,0 +1,1911 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template <class T>
+//    basic_string& assign(size_type pos1, const T& t, size_type pos2, size_type n=npos); // C++17, constexpr since C++20
+//
+//  Mostly we're testing string_view here
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, SV sv, typename S::size_type pos2,
+     typename S::size_type n, S expected)
+{
+    static_assert((!std::is_same<S, SV>::value), "");
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= sv.size())
+    {
+        s.insert(pos1, sv, pos2, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos1, sv, pos2, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > sv.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, typename S::size_type pos1, SV sv, typename S::size_type pos2, S expected)
+{
+    static_assert((!std::is_same<S, SV>::value), "");
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= sv.size())
+    {
+        s.insert(pos1, sv, pos2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos1, sv, pos2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > sv.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, SV(""), 0, 0, S(""));
+    test(S(""), 0, SV(""), 0, 1, S(""));
+    test(S(""), 0, SV(""), 1, 0, S("can't happen"));
+    test(S(""), 0, SV("12345"), 0, 0, S(""));
+    test(S(""), 0, SV("12345"), 0, 1, S("1"));
+    test(S(""), 0, SV("12345"), 0, 2, S("12"));
+    test(S(""), 0, SV("12345"), 0, 4, S("1234"));
+    test(S(""), 0, SV("12345"), 0, 5, S("12345"));
+    test(S(""), 0, SV("12345"), 0, 6, S("12345"));
+    test(S(""), 0, SV("12345"), 1, 0, S(""));
+    test(S(""), 0, SV("12345"), 1, 1, S("2"));
+    test(S(""), 0, SV("12345"), 1, 2, S("23"));
+    test(S(""), 0, SV("12345"), 1, 3, S("234"));
+    test(S(""), 0, SV("12345"), 1, 4, S("2345"));
+    test(S(""), 0, SV("12345"), 1, 5, S("2345"));
+    test(S(""), 0, SV("12345"), 2, 0, S(""));
+    test(S(""), 0, SV("12345"), 2, 1, S("3"));
+    test(S(""), 0, SV("12345"), 2, 2, S("34"));
+    test(S(""), 0, SV("12345"), 2, 3, S("345"));
+    test(S(""), 0, SV("12345"), 2, 4, S("345"));
+    test(S(""), 0, SV("12345"), 4, 0, S(""));
+    test(S(""), 0, SV("12345"), 4, 1, S("5"));
+    test(S(""), 0, SV("12345"), 4, 2, S("5"));
+    test(S(""), 0, SV("12345"), 5, 0, S(""));
+    test(S(""), 0, SV("12345"), 5, 1, S(""));
+    test(S(""), 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S(""), 0, SV("1234567890"), 0, 0, S(""));
+    test(S(""), 0, SV("1234567890"), 0, 1, S("1"));
+    test(S(""), 0, SV("1234567890"), 0, 5, S("12345"));
+    test(S(""), 0, SV("1234567890"), 0, 9, S("123456789"));
+    test(S(""), 0, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S(""), 0, SV("1234567890"), 1, 0, S(""));
+    test(S(""), 0, SV("1234567890"), 1, 1, S("2"));
+    test(S(""), 0, SV("1234567890"), 1, 4, S("2345"));
+    test(S(""), 0, SV("1234567890"), 1, 8, S("23456789"));
+    test(S(""), 0, SV("1234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, SV("1234567890"), 1, 10, S("234567890"));
+    test(S(""), 0, SV("1234567890"), 5, 0, S(""));
+    test(S(""), 0, SV("1234567890"), 5, 1, S("6"));
+    test(S(""), 0, SV("1234567890"), 5, 2, S("67"));
+    test(S(""), 0, SV("1234567890"), 5, 4, S("6789"));
+    test(S(""), 0, SV("1234567890"), 5, 5, S("67890"));
+    test(S(""), 0, SV("1234567890"), 5, 6, S("67890"));
+    test(S(""), 0, SV("1234567890"), 9, 0, S(""));
+    test(S(""), 0, SV("1234567890"), 9, 1, S("0"));
+    test(S(""), 0, SV("1234567890"), 9, 2, S("0"));
+    test(S(""), 0, SV("1234567890"), 10, 0, S(""));
+    test(S(""), 0, SV("1234567890"), 10, 1, S(""));
+    test(S(""), 0, SV("1234567890"), 11, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S(""), 0, SV("12345678901234567890"), 0, 0, S(""));
+    test(S(""), 0, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S(""), 0, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S(""), 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 1, 0, S(""));
+    test(S(""), 0, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S(""), 0, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S(""), 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 10, 0, S(""));
+    test(S(""), 0, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S(""), 0, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S(""), 0, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S(""), 0, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S(""), 0, SV("12345678901234567890"), 19, 0, S(""));
+    test(S(""), 0, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S(""), 0, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S(""), 0, SV("12345678901234567890"), 20, 0, S(""));
+    test(S(""), 0, SV("12345678901234567890"), 20, 1, S(""));
+    test(S(""), 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S(""), 1, SV(""), 0, 0, S("can't happen"));
+    test(S(""), 1, SV(""), 0, 1, S("can't happen"));
+    test(S(""), 1, SV(""), 1, 0, S("can't happen"));
+    test(S(""), 1, SV("12345"), 0, 0, S("can't happen"));
+    test(S(""), 1, SV("12345"), 0, 1, S("can't happen"));
+    test(S(""), 1, SV("12345"), 0, 2, S("can't happen"));
+    test(S(""), 1, SV("12345"), 0, 4, S("can't happen"));
+    test(S(""), 1, SV("12345"), 0, 5, S("can't happen"));
+    test(S(""), 1, SV("12345"), 0, 6, S("can't happen"));
+    test(S(""), 1, SV("12345"), 1, 0, S("can't happen"));
+    test(S(""), 1, SV("12345"), 1, 1, S("can't happen"));
+    test(S(""), 1, SV("12345"), 1, 2, S("can't happen"));
+    test(S(""), 1, SV("12345"), 1, 3, S("can't happen"));
+    test(S(""), 1, SV("12345"), 1, 4, S("can't happen"));
+    test(S(""), 1, SV("12345"), 1, 5, S("can't happen"));
+    test(S(""), 1, SV("12345"), 2, 0, S("can't happen"));
+    test(S(""), 1, SV("12345"), 2, 1, S("can't happen"));
+    test(S(""), 1, SV("12345"), 2, 2, S("can't happen"));
+    test(S(""), 1, SV("12345"), 2, 3, S("can't happen"));
+    test(S(""), 1, SV("12345"), 2, 4, S("can't happen"));
+    test(S(""), 1, SV("12345"), 4, 0, S("can't happen"));
+    test(S(""), 1, SV("12345"), 4, 1, S("can't happen"));
+    test(S(""), 1, SV("12345"), 4, 2, S("can't happen"));
+    test(S(""), 1, SV("12345"), 5, 0, S("can't happen"));
+    test(S(""), 1, SV("12345"), 5, 1, S("can't happen"));
+    test(S(""), 1, SV("12345"), 6, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S(""), 1, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S(""), 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 0, SV(""), 0, 1, S("abcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, SV("12345"), 0, 2, S("12abcde"));
+    test(S("abcde"), 0, SV("12345"), 0, 4, S("1234abcde"));
+    test(S("abcde"), 0, SV("12345"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, SV("12345"), 0, 6, S("12345abcde"));
+    test(S("abcde"), 0, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, SV("12345"), 1, 2, S("23abcde"));
+    test(S("abcde"), 0, SV("12345"), 1, 3, S("234abcde"));
+    test(S("abcde"), 0, SV("12345"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, SV("12345"), 1, 5, S("2345abcde"));
+    test(S("abcde"), 0, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345"), 2, 1, S("3abcde"));
+    test(S("abcde"), 0, SV("12345"), 2, 2, S("34abcde"));
+    test(S("abcde"), 0, SV("12345"), 2, 3, S("345abcde"));
+    test(S("abcde"), 0, SV("12345"), 2, 4, S("345abcde"));
+    test(S("abcde"), 0, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345"), 4, 1, S("5abcde"));
+    test(S("abcde"), 0, SV("12345"), 4, 2, S("5abcde"));
+    test(S("abcde"), 0, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 0, 9, S("123456789abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 0, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 1, 8, S("23456789abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 1, 10, S("234567890abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 5, 1, S("6abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 5, 2, S("67abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 5, 4, S("6789abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 5, 5, S("67890abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 5, 6, S("67890abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 9, 1, S("0abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 9, 2, S("0abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 0, 1, S("1abcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 0, SV("12345678901234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 1, 18, S("234567890123456789abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 10, 1, S("1abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 10, 5, S("12345abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 10, 9, S("123456789abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 10, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 10, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 19, 1, S("0abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 19, 2, S("0abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 1, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, SV("12345"), 0, 2, S("a12bcde"));
+    test(S("abcde"), 1, SV("12345"), 0, 4, S("a1234bcde"));
+    test(S("abcde"), 1, SV("12345"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, SV("12345"), 0, 6, S("a12345bcde"));
+    test(S("abcde"), 1, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, SV("12345"), 1, 2, S("a23bcde"));
+    test(S("abcde"), 1, SV("12345"), 1, 3, S("a234bcde"));
+    test(S("abcde"), 1, SV("12345"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, SV("12345"), 1, 5, S("a2345bcde"));
+    test(S("abcde"), 1, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345"), 2, 1, S("a3bcde"));
+    test(S("abcde"), 1, SV("12345"), 2, 2, S("a34bcde"));
+    test(S("abcde"), 1, SV("12345"), 2, 3, S("a345bcde"));
+    test(S("abcde"), 1, SV("12345"), 2, 4, S("a345bcde"));
+    test(S("abcde"), 1, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345"), 4, 1, S("a5bcde"));
+    test(S("abcde"), 1, SV("12345"), 4, 2, S("a5bcde"));
+    test(S("abcde"), 1, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, SV("1234567890"), 0, 1, S("a1bcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcde"), 1, SV("1234567890"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 0, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 0, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, SV("1234567890"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 1, 8, S("a23456789bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 1, 10, S("a234567890bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, SV("1234567890"), 5, 1, S("a6bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 5, 2, S("a67bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 5, 4, S("a6789bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 5, 5, S("a67890bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 5, 6, S("a67890bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 1, SV("1234567890"), 9, 1, S("a0bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 9, 2, S("a0bcde"));
+    test(S("abcde"), 1, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 0, 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 0, 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 0, 21, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 1, 18, S("a234567890123456789bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 1, 19, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 1, 20, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 10, 1, S("a1bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 10, 5, S("a12345bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 10, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 10, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 10, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 19, 1, S("a0bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 19, 2, S("a0bcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 2, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, SV("12345"), 0, 0, S("abcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcde"), 2, SV("12345"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, SV("12345"), 0, 2, S("ab12cde"));
+    test(S("abcde"), 2, SV("12345"), 0, 4, S("ab1234cde"));
+    test(S("abcde"), 2, SV("12345"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, SV("12345"), 0, 6, S("ab12345cde"));
+    test(S("abcde"), 2, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, SV("12345"), 1, 2, S("ab23cde"));
+    test(S("abcde"), 2, SV("12345"), 1, 3, S("ab234cde"));
+    test(S("abcde"), 2, SV("12345"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, SV("12345"), 1, 5, S("ab2345cde"));
+    test(S("abcde"), 2, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345"), 2, 1, S("ab3cde"));
+    test(S("abcde"), 2, SV("12345"), 2, 2, S("ab34cde"));
+    test(S("abcde"), 2, SV("12345"), 2, 3, S("ab345cde"));
+    test(S("abcde"), 2, SV("12345"), 2, 4, S("ab345cde"));
+    test(S("abcde"), 2, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345"), 4, 1, S("ab5cde"));
+    test(S("abcde"), 2, SV("12345"), 4, 2, S("ab5cde"));
+    test(S("abcde"), 2, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, SV("1234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, SV("1234567890"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, SV("1234567890"), 0, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, SV("1234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, SV("1234567890"), 0, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, SV("1234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, SV("1234567890"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, SV("1234567890"), 1, 8, S("ab23456789cde"));
+    test(S("abcde"), 2, SV("1234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, SV("1234567890"), 1, 10, S("ab234567890cde"));
+    test(S("abcde"), 2, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, SV("1234567890"), 5, 1, S("ab6cde"));
+    test(S("abcde"), 2, SV("1234567890"), 5, 2, S("ab67cde"));
+    test(S("abcde"), 2, SV("1234567890"), 5, 4, S("ab6789cde"));
+    test(S("abcde"), 2, SV("1234567890"), 5, 5, S("ab67890cde"));
+    test(S("abcde"), 2, SV("1234567890"), 5, 6, S("ab67890cde"));
+    test(S("abcde"), 2, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 2, SV("1234567890"), 9, 1, S("ab0cde"));
+    test(S("abcde"), 2, SV("1234567890"), 9, 2, S("ab0cde"));
+    test(S("abcde"), 2, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 0, 19, S("ab1234567890123456789cde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcde"), 2, SV("12345678901234567890"), 0, 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 0, 21, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 1, 18, S("ab234567890123456789cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 1, 19, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 1, 20, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 10, 1, S("ab1cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 10, 5, S("ab12345cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 10, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 10, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 10, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 19, 1, S("ab0cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 19, 2, S("ab0cde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 4, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 4, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, SV("12345"), 0, 2, S("abcd12e"));
+    test(S("abcde"), 4, SV("12345"), 0, 4, S("abcd1234e"));
+    test(S("abcde"), 4, SV("12345"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, SV("12345"), 0, 6, S("abcd12345e"));
+    test(S("abcde"), 4, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, SV("12345"), 1, 2, S("abcd23e"));
+    test(S("abcde"), 4, SV("12345"), 1, 3, S("abcd234e"));
+    test(S("abcde"), 4, SV("12345"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, SV("12345"), 1, 5, S("abcd2345e"));
+    test(S("abcde"), 4, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345"), 2, 1, S("abcd3e"));
+    test(S("abcde"), 4, SV("12345"), 2, 2, S("abcd34e"));
+    test(S("abcde"), 4, SV("12345"), 2, 3, S("abcd345e"));
+    test(S("abcde"), 4, SV("12345"), 2, 4, S("abcd345e"));
+    test(S("abcde"), 4, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345"), 4, 1, S("abcd5e"));
+    test(S("abcde"), 4, SV("12345"), 4, 2, S("abcd5e"));
+    test(S("abcde"), 4, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 4, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, SV("1234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, SV("1234567890"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, SV("1234567890"), 0, 9, S("abcd123456789e"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcde"), 4, SV("1234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, SV("1234567890"), 0, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, SV("1234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, SV("1234567890"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, SV("1234567890"), 1, 8, S("abcd23456789e"));
+    test(S("abcde"), 4, SV("1234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, SV("1234567890"), 1, 10, S("abcd234567890e"));
+    test(S("abcde"), 4, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, SV("1234567890"), 5, 1, S("abcd6e"));
+    test(S("abcde"), 4, SV("1234567890"), 5, 2, S("abcd67e"));
+    test(S("abcde"), 4, SV("1234567890"), 5, 4, S("abcd6789e"));
+    test(S("abcde"), 4, SV("1234567890"), 5, 5, S("abcd67890e"));
+    test(S("abcde"), 4, SV("1234567890"), 5, 6, S("abcd67890e"));
+    test(S("abcde"), 4, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 4, SV("1234567890"), 9, 1, S("abcd0e"));
+    test(S("abcde"), 4, SV("1234567890"), 9, 2, S("abcd0e"));
+    test(S("abcde"), 4, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 4, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 0, 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 0, 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 0, 21, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 1, 18, S("abcd234567890123456789e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 1, 19, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 1, 20, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 10, 1, S("abcd1e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 10, 5, S("abcd12345e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 10, 9, S("abcd123456789e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 10, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 10, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 19, 1, S("abcd0e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 19, 2, S("abcd0e"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 4, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 5, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 5, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 5, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, SV("12345"), 0, 2, S("abcde12"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcde"), 5, SV("12345"), 0, 4, S("abcde1234"));
+    test(S("abcde"), 5, SV("12345"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, SV("12345"), 0, 6, S("abcde12345"));
+    test(S("abcde"), 5, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, SV("12345"), 1, 2, S("abcde23"));
+    test(S("abcde"), 5, SV("12345"), 1, 3, S("abcde234"));
+    test(S("abcde"), 5, SV("12345"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, SV("12345"), 1, 5, S("abcde2345"));
+    test(S("abcde"), 5, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345"), 2, 1, S("abcde3"));
+    test(S("abcde"), 5, SV("12345"), 2, 2, S("abcde34"));
+    test(S("abcde"), 5, SV("12345"), 2, 3, S("abcde345"));
+    test(S("abcde"), 5, SV("12345"), 2, 4, S("abcde345"));
+    test(S("abcde"), 5, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345"), 4, 1, S("abcde5"));
+    test(S("abcde"), 5, SV("12345"), 4, 2, S("abcde5"));
+    test(S("abcde"), 5, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 5, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, SV("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, SV("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, SV("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcde"), 5, SV("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, SV("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, SV("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, SV("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, SV("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcde"), 5, SV("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, SV("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcde"), 5, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, SV("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcde"), 5, SV("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcde"), 5, SV("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcde"), 5, SV("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcde"), 5, SV("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcde"), 5, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 5, SV("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcde"), 5, SV("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcde"), 5, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcde"), 5, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 6, SV(""), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, SV(""), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 0, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 0, 4, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 0, 6, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 1, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 1, 3, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 1, 5, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 2, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 2, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 2, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 2, 3, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 2, 4, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 4, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 4, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 4, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 0, 11, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcde"), 6, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcde"), 6, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 0, 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 0, 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 0, 5, S("12345abcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test12()
+{
+    test(S("abcdefghij"), 0, SV("12345"), 0, 6, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 1, 2, S("23abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 1, 3, S("234abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 1, 5, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 2, 1, S("3abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 2, 2, S("34abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 2, 3, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 2, 4, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 4, 1, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 4, 2, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 0, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 0, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 0, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 1, 8, S("23456789abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 1, 10, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 5, 1, S("6abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 5, 2, S("67abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 5, 4, S("6789abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 5, 5, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 5, 6, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 9, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 9, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 1, 1, S("2abcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test13()
+{
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 1, 18, S("234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 10, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 10, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 10, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 10, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 10, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 19, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 19, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 0, 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 0, 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 0, 6, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 1, 2, S("a23bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 1, 3, S("a234bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 1, 5, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 2, 1, S("a3bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 2, 2, S("a34bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 2, 3, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 2, 4, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 4, 1, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 4, 2, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 0, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 0, 11, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 1, 1, S("a2bcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test14()
+{
+    test(S("abcdefghij"), 1, SV("1234567890"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 1, 8, S("a23456789bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 1, 10, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 5, 1, S("a6bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 5, 2, S("a67bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 5, 4, S("a6789bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 5, 5, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 5, 6, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 9, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 9, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 10, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 10, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 10, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 10, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 10, 11, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 19, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 19, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 0, 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 0, 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 0, 6, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 1, 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test15()
+{
+    test(S("abcdefghij"), 5, SV("12345"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 1, 2, S("abcde23fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 1, 3, S("abcde234fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 1, 5, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 2, 1, S("abcde3fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 2, 2, S("abcde34fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 2, 3, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 2, 4, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 4, 1, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 4, 2, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 0, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 0, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 1, 8, S("abcde23456789fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 1, 10, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 5, 1, S("abcde6fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 5, 2, S("abcde67fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 5, 4, S("abcde6789fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 5, 5, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 5, 6, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 9, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 9, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789fghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test16()
+{
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 10, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 10, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 10, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 10, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 10, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 19, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 19, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, SV("12345"), 0, 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, SV("12345"), 0, 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, SV("12345"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, SV("12345"), 0, 6, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, SV("12345"), 1, 2, S("abcdefghi23j"));
+    test(S("abcdefghij"), 9, SV("12345"), 1, 3, S("abcdefghi234j"));
+    test(S("abcdefghij"), 9, SV("12345"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, SV("12345"), 1, 5, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345"), 2, 1, S("abcdefghi3j"));
+    test(S("abcdefghij"), 9, SV("12345"), 2, 2, S("abcdefghi34j"));
+    test(S("abcdefghij"), 9, SV("12345"), 2, 3, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, SV("12345"), 2, 4, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345"), 4, 1, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, SV("12345"), 4, 2, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 0, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 0, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 1, 8, S("abcdefghi23456789j"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test17()
+{
+    test(S("abcdefghij"), 9, SV("1234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 1, 10, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 5, 1, S("abcdefghi6j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 5, 2, S("abcdefghi67j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 5, 4, S("abcdefghi6789j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 5, 5, S("abcdefghi67890j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 5, 6, S("abcdefghi67890j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 9, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 9, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 10, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 10, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 10, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 10, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 10, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 19, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 19, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, SV("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, SV("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, SV("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, SV("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, SV("12345"), 1, 2, S("abcdefghij23"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test18()
+{
+    test(S("abcdefghij"), 10, SV("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghij"), 10, SV("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, SV("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghij"), 10, SV("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghij"), 10, SV("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, SV("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, SV("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test19()
+{
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV(""), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV(""), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 1, 10, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test20()
+{
+    test(S("abcdefghij"), 11, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 0, 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 0, 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 0, 6, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 1, 2, S("23abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 1, 3, S("234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 1, 4, S("2345abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test21()
+{
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 1, 5, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 2, 1, S("3abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 2, 2, S("34abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 2, 3, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 2, 4, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 4, 1, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 4, 2, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 0, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 0, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 1, 4, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 1, 8, S("23456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 1, 10, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 5, 1, S("6abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 5, 2, S("67abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 5, 4, S("6789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 5, 5, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 5, 6, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 9, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 9, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 1, 18, S("234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 10, 1, S("1abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test22()
+{
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 10, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 10, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 10, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 10, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 19, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 19, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 0, 2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 0, 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 0, 6, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 1, 2, S("a23bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 1, 3, S("a234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 1, 5, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 2, 1, S("a3bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 2, 2, S("a34bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 2, 3, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 2, 4, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 4, 1, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 4, 2, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 0, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 0, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 1, 8, S("a23456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 1, 10, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 5, 1, S("a6bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test23()
+{
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 5, 2, S("a67bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 5, 4, S("a6789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 5, 5, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 5, 6, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 9, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 9, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 10, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 10, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 10, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 10, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 10, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 19, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 19, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, 6, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, 2, S("abcdefghij23klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, 3, S("abcdefghij234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, 5, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test24()
+{
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 2, 1, S("abcdefghij3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 2, 2, S("abcdefghij34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 2, 3, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 2, 4, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 4, 1, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 4, 2, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 0, 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 0, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 1, 8, S("abcdefghij23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 1, 10, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 5, 1, S("abcdefghij6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 5, 2, S("abcdefghij67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 5, 4, S("abcdefghij6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 5, 5, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 5, 6, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 9, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 9, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 10, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 10, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789klmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test25()
+{
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 19, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 19, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 0, 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 0, 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 0, 6, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 1, 2, S("abcdefghijklmnopqrs23t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 1, 3, S("abcdefghijklmnopqrs234t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 1, 5, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 2, 1, S("abcdefghijklmnopqrs3t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 2, 2, S("abcdefghijklmnopqrs34t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 2, 3, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 2, 4, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 4, 1, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 4, 2, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrs6t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrs67t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789t"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test26()
+{
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test27()
+{
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test28()
+{
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV(""), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV(""), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 5, 6, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test29()
+{
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), 21, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test30()
+{
+    test_npos(S(""), 0, SV("12345678901234567890"),  0, S("12345678901234567890"));
+    test_npos(S(""), 0, SV("12345678901234567890"),  1, S( "2345678901234567890"));
+    test_npos(S(""), 0, SV("12345678901234567890"),  2, S(  "345678901234567890"));
+    test_npos(S(""), 0, SV("12345678901234567890"),  3, S(   "45678901234567890"));
+    test_npos(S(""), 0, SV("12345678901234567890"),  5, S(     "678901234567890"));
+    test_npos(S(""), 0, SV("12345678901234567890"), 10, S(          "1234567890"));
+    test_npos(S(""), 0, SV("12345678901234567890"), 21, S("can't happen"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, SV("12345"), 0, S("abcdefghij12345klmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, SV("12345"), 1, S("abcdefghij2345klmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, SV("12345"), 3, S("abcdefghij45klmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, SV("12345"), 5, S("abcdefghijklmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, SV("12345"), 6, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test31() {
+    S s;
+    SV sv = "EFGH";
+    char arr[] = "IJKL";
+
+    s.insert(0, "CDEF", 0);    // calls insert(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    s.insert(0, "QRST", 0, std::string::npos); // calls insert(string("QRST"), pos, npos)
+    assert(s == "QRST");
+    s.clear();
+
+    s.insert(0, sv, 0);  // calls insert(T, pos, npos)
+    assert(s == sv);
+    s.clear();
+
+    s.insert(0, sv, 0, std::string::npos);   // calls insert(T, pos, npos)
+    assert(s == sv);
+    s.clear();
+
+    s.insert(0, arr, 0);     // calls insert(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    s.insert(0, arr, 0, std::string::npos);    // calls insert(string("IJKL"), pos, npos)
+    assert(s == "IJKL");
+    s.clear();
+
+    s.insert(0, arr, 0);     // calls insert(const char *, len)
+    assert(s == "");
+    s.clear();
+
+    return true;
+}
+
+template <class S, class SV>
+void test() {
+  test0<S, SV>();
+  test1<S, SV>();
+  test2<S, SV>();
+  test3<S, SV>();
+  test4<S, SV>();
+  test5<S, SV>();
+  test6<S, SV>();
+  test7<S, SV>();
+  test8<S, SV>();
+  test9<S, SV>();
+  test10<S, SV>();
+  test11<S, SV>();
+  test12<S, SV>();
+  test13<S, SV>();
+  test14<S, SV>();
+  test15<S, SV>();
+  test16<S, SV>();
+  test17<S, SV>();
+  test18<S, SV>();
+  test19<S, SV>();
+  test20<S, SV>();
+  test21<S, SV>();
+  test22<S, SV>();
+  test23<S, SV>();
+  test24<S, SV>();
+  test25<S, SV>();
+  test26<S, SV>();
+  test27<S, SV>();
+  test28<S, SV>();
+  test29<S, SV>();
+  test30<S, SV>();
+  test31<S, SV>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S, SV>());
+  static_assert(test1<S, SV>());
+  static_assert(test2<S, SV>());
+  static_assert(test3<S, SV>());
+  static_assert(test4<S, SV>());
+  static_assert(test5<S, SV>());
+  static_assert(test6<S, SV>());
+  static_assert(test7<S, SV>());
+  static_assert(test8<S, SV>());
+  static_assert(test9<S, SV>());
+  static_assert(test10<S, SV>());
+  static_assert(test11<S, SV>());
+  static_assert(test12<S, SV>());
+  static_assert(test13<S, SV>());
+  static_assert(test14<S, SV>());
+  static_assert(test15<S, SV>());
+  static_assert(test16<S, SV>());
+  static_assert(test17<S, SV>());
+  static_assert(test18<S, SV>());
+  static_assert(test19<S, SV>());
+  static_assert(test20<S, SV>());
+  static_assert(test21<S, SV>());
+  static_assert(test22<S, SV>());
+  static_assert(test23<S, SV>());
+  static_assert(test24<S, SV>());
+  static_assert(test25<S, SV>());
+  static_assert(test26<S, SV>());
+  static_assert(test27<S, SV>());
+  static_assert(test28<S, SV>());
+  static_assert(test29<S, SV>());
+  static_assert(test30<S, SV>());
+  static_assert(test31<S, SV>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string, std::string_view>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>,
+       std::basic_string_view<char, std::char_traits<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp
new file mode 100644
index 0000000..e8a6abf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp
@@ -0,0 +1,167 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   insert(size_type pos, const charT* s); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, const typename S::value_type* str, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.insert(pos, str);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, "", S(""));
+  test(S(""), 0, "12345", S("12345"));
+  test(S(""), 0, "1234567890", S("1234567890"));
+  test(S(""), 0, "12345678901234567890", S("12345678901234567890"));
+  test(S(""), 1, "", S("can't happen"));
+  test(S(""), 1, "12345", S("can't happen"));
+  test(S(""), 1, "1234567890", S("can't happen"));
+  test(S(""), 1, "12345678901234567890", S("can't happen"));
+  test(S("abcde"), 0, "", S("abcde"));
+  test(S("abcde"), 0, "12345", S("12345abcde"));
+  test(S("abcde"), 0, "1234567890", S("1234567890abcde"));
+  test(S("abcde"), 0, "12345678901234567890", S("12345678901234567890abcde"));
+  test(S("abcde"), 1, "", S("abcde"));
+  test(S("abcde"), 1, "12345", S("a12345bcde"));
+  test(S("abcde"), 1, "1234567890", S("a1234567890bcde"));
+  test(S("abcde"), 1, "12345678901234567890", S("a12345678901234567890bcde"));
+  test(S("abcde"), 2, "", S("abcde"));
+  test(S("abcde"), 2, "12345", S("ab12345cde"));
+  test(S("abcde"), 2, "1234567890", S("ab1234567890cde"));
+  test(S("abcde"), 2, "12345678901234567890", S("ab12345678901234567890cde"));
+  test(S("abcde"), 4, "", S("abcde"));
+  test(S("abcde"), 4, "12345", S("abcd12345e"));
+  test(S("abcde"), 4, "1234567890", S("abcd1234567890e"));
+  test(S("abcde"), 4, "12345678901234567890", S("abcd12345678901234567890e"));
+  test(S("abcde"), 5, "", S("abcde"));
+  test(S("abcde"), 5, "12345", S("abcde12345"));
+  test(S("abcde"), 5, "1234567890", S("abcde1234567890"));
+  test(S("abcde"), 5, "12345678901234567890", S("abcde12345678901234567890"));
+  test(S("abcde"), 6, "", S("can't happen"));
+  test(S("abcde"), 6, "12345", S("can't happen"));
+  test(S("abcde"), 6, "1234567890", S("can't happen"));
+  test(S("abcde"), 6, "12345678901234567890", S("can't happen"));
+  test(S("abcdefghij"), 0, "", S("abcdefghij"));
+  test(S("abcdefghij"), 0, "12345", S("12345abcdefghij"));
+  test(S("abcdefghij"), 0, "1234567890", S("1234567890abcdefghij"));
+  test(S("abcdefghij"), 0, "12345678901234567890", S("12345678901234567890abcdefghij"));
+  test(S("abcdefghij"), 1, "", S("abcdefghij"));
+  test(S("abcdefghij"), 1, "12345", S("a12345bcdefghij"));
+  test(S("abcdefghij"), 1, "1234567890", S("a1234567890bcdefghij"));
+  test(S("abcdefghij"), 1, "12345678901234567890", S("a12345678901234567890bcdefghij"));
+  test(S("abcdefghij"), 5, "", S("abcdefghij"));
+  test(S("abcdefghij"), 5, "12345", S("abcde12345fghij"));
+  test(S("abcdefghij"), 5, "1234567890", S("abcde1234567890fghij"));
+  test(S("abcdefghij"), 5, "12345678901234567890", S("abcde12345678901234567890fghij"));
+  test(S("abcdefghij"), 9, "", S("abcdefghij"));
+  test(S("abcdefghij"), 9, "12345", S("abcdefghi12345j"));
+  test(S("abcdefghij"), 9, "1234567890", S("abcdefghi1234567890j"));
+  test(S("abcdefghij"), 9, "12345678901234567890", S("abcdefghi12345678901234567890j"));
+  test(S("abcdefghij"), 10, "", S("abcdefghij"));
+  test(S("abcdefghij"), 10, "12345", S("abcdefghij12345"));
+  test(S("abcdefghij"), 10, "1234567890", S("abcdefghij1234567890"));
+  test(S("abcdefghij"), 10, "12345678901234567890", S("abcdefghij12345678901234567890"));
+  test(S("abcdefghij"), 11, "", S("can't happen"));
+  test(S("abcdefghij"), 11, "12345", S("can't happen"));
+  test(S("abcdefghij"), 11, "1234567890", S("can't happen"));
+  test(S("abcdefghij"), 11, "12345678901234567890", S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 0, "", S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, "12345", S("12345abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, "1234567890", S("1234567890abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, "12345678901234567890", S("12345678901234567890abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, "", S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, "12345", S("a12345bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, "1234567890", S("a1234567890bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, "12345678901234567890", S("a12345678901234567890bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, "", S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, "12345", S("abcdefghij12345klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, "1234567890", S("abcdefghij1234567890klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, "12345678901234567890", S("abcdefghij12345678901234567890klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, "", S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, "12345", S("abcdefghijklmnopqrs12345t"));
+  test(S("abcdefghijklmnopqrst"), 19, "1234567890", S("abcdefghijklmnopqrs1234567890t"));
+  test(S("abcdefghijklmnopqrst"), 19, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890t"));
+  test(S("abcdefghijklmnopqrst"), 20, "", S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 20, "12345", S("abcdefghijklmnopqrst12345"));
+  test(S("abcdefghijklmnopqrst"), 20, "1234567890", S("abcdefghijklmnopqrst1234567890"));
+  test(S("abcdefghijklmnopqrst"), 20, "12345678901234567890", S("abcdefghijklmnopqrst12345678901234567890"));
+  test(S("abcdefghijklmnopqrst"), 21, "", S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, "12345", S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, "1234567890", S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", S("can't happen"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  { // test inserting into self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.insert(0, s_short.c_str());
+    assert(s_short == "123/123/");
+    s_short.insert(0, s_short.c_str());
+    assert(s_short == "123/123/123/123/");
+    s_short.insert(0, s_short.c_str());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.insert(0, s_long.c_str());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp
new file mode 100644
index 0000000..1e0cdf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp
@@ -0,0 +1,407 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   insert(size_type pos, const charT* s, size_type n); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, const typename S::value_type* str,
+     typename S::size_type n, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.insert(pos, str, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos, str, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    test(S(""), 0, "", 0, S(""));
+    test(S(""), 0, "12345", 0, S(""));
+    test(S(""), 0, "12345", 1, S("1"));
+    test(S(""), 0, "12345", 2, S("12"));
+    test(S(""), 0, "12345", 4, S("1234"));
+    test(S(""), 0, "12345", 5, S("12345"));
+    test(S(""), 0, "1234567890", 0, S(""));
+    test(S(""), 0, "1234567890", 1, S("1"));
+    test(S(""), 0, "1234567890", 5, S("12345"));
+    test(S(""), 0, "1234567890", 9, S("123456789"));
+    test(S(""), 0, "1234567890", 10, S("1234567890"));
+    test(S(""), 0, "12345678901234567890", 0, S(""));
+    test(S(""), 0, "12345678901234567890", 1, S("1"));
+    test(S(""), 0, "12345678901234567890", 10, S("1234567890"));
+    test(S(""), 0, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S(""), 0, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S(""), 1, "", 0, S("can't happen"));
+    test(S(""), 1, "12345", 0, S("can't happen"));
+    test(S(""), 1, "12345", 1, S("can't happen"));
+    test(S(""), 1, "12345", 2, S("can't happen"));
+    test(S(""), 1, "12345", 4, S("can't happen"));
+    test(S(""), 1, "12345", 5, S("can't happen"));
+    test(S(""), 1, "1234567890", 0, S("can't happen"));
+    test(S(""), 1, "1234567890", 1, S("can't happen"));
+    test(S(""), 1, "1234567890", 5, S("can't happen"));
+    test(S(""), 1, "1234567890", 9, S("can't happen"));
+    test(S(""), 1, "1234567890", 10, S("can't happen"));
+    test(S(""), 1, "12345678901234567890", 0, S("can't happen"));
+    test(S(""), 1, "12345678901234567890", 1, S("can't happen"));
+    test(S(""), 1, "12345678901234567890", 10, S("can't happen"));
+    test(S(""), 1, "12345678901234567890", 19, S("can't happen"));
+    test(S(""), 1, "12345678901234567890", 20, S("can't happen"));
+    test(S("abcde"), 0, "", 0, S("abcde"));
+    test(S("abcde"), 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 0, "12345", 1, S("1abcde"));
+    test(S("abcde"), 0, "12345", 2, S("12abcde"));
+    test(S("abcde"), 0, "12345", 4, S("1234abcde"));
+    test(S("abcde"), 0, "12345", 5, S("12345abcde"));
+    test(S("abcde"), 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 0, "1234567890", 1, S("1abcde"));
+    test(S("abcde"), 0, "1234567890", 5, S("12345abcde"));
+    test(S("abcde"), 0, "1234567890", 9, S("123456789abcde"));
+    test(S("abcde"), 0, "1234567890", 10, S("1234567890abcde"));
+    test(S("abcde"), 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 0, "12345678901234567890", 1, S("1abcde"));
+    test(S("abcde"), 0, "12345678901234567890", 10, S("1234567890abcde"));
+    test(S("abcde"), 0, "12345678901234567890", 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, "12345678901234567890", 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 1, "", 0, S("abcde"));
+    test(S("abcde"), 1, "12345", 0, S("abcde"));
+    test(S("abcde"), 1, "12345", 1, S("a1bcde"));
+    test(S("abcde"), 1, "12345", 2, S("a12bcde"));
+    test(S("abcde"), 1, "12345", 4, S("a1234bcde"));
+    test(S("abcde"), 1, "12345", 5, S("a12345bcde"));
+    test(S("abcde"), 1, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 1, "1234567890", 1, S("a1bcde"));
+    test(S("abcde"), 1, "1234567890", 5, S("a12345bcde"));
+    test(S("abcde"), 1, "1234567890", 9, S("a123456789bcde"));
+    test(S("abcde"), 1, "1234567890", 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 1, "12345678901234567890", 1, S("a1bcde"));
+    test(S("abcde"), 1, "12345678901234567890", 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, "12345678901234567890", 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, "12345678901234567890", 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 2, "", 0, S("abcde"));
+    test(S("abcde"), 2, "12345", 0, S("abcde"));
+    test(S("abcde"), 2, "12345", 1, S("ab1cde"));
+    test(S("abcde"), 2, "12345", 2, S("ab12cde"));
+    test(S("abcde"), 2, "12345", 4, S("ab1234cde"));
+    test(S("abcde"), 2, "12345", 5, S("ab12345cde"));
+    test(S("abcde"), 2, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 2, "1234567890", 1, S("ab1cde"));
+    test(S("abcde"), 2, "1234567890", 5, S("ab12345cde"));
+    test(S("abcde"), 2, "1234567890", 9, S("ab123456789cde"));
+    test(S("abcde"), 2, "1234567890", 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 2, "12345678901234567890", 1, S("ab1cde"));
+    test(S("abcde"), 2, "12345678901234567890", 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, "12345678901234567890", 19, S("ab1234567890123456789cde"));
+    test(S("abcde"), 2, "12345678901234567890", 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 4, "", 0, S("abcde"));
+    test(S("abcde"), 4, "12345", 0, S("abcde"));
+    test(S("abcde"), 4, "12345", 1, S("abcd1e"));
+    test(S("abcde"), 4, "12345", 2, S("abcd12e"));
+    test(S("abcde"), 4, "12345", 4, S("abcd1234e"));
+    test(S("abcde"), 4, "12345", 5, S("abcd12345e"));
+    test(S("abcde"), 4, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 4, "1234567890", 1, S("abcd1e"));
+    test(S("abcde"), 4, "1234567890", 5, S("abcd12345e"));
+    test(S("abcde"), 4, "1234567890", 9, S("abcd123456789e"));
+    test(S("abcde"), 4, "1234567890", 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 4, "12345678901234567890", 1, S("abcd1e"));
+    test(S("abcde"), 4, "12345678901234567890", 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, "12345678901234567890", 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, "12345678901234567890", 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 5, "", 0, S("abcde"));
+    test(S("abcde"), 5, "12345", 0, S("abcde"));
+    test(S("abcde"), 5, "12345", 1, S("abcde1"));
+    test(S("abcde"), 5, "12345", 2, S("abcde12"));
+    test(S("abcde"), 5, "12345", 4, S("abcde1234"));
+    test(S("abcde"), 5, "12345", 5, S("abcde12345"));
+    test(S("abcde"), 5, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 5, "1234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, "1234567890", 5, S("abcde12345"));
+    test(S("abcde"), 5, "1234567890", 9, S("abcde123456789"));
+    test(S("abcde"), 5, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 5, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, "12345678901234567890", 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 6, "", 0, S("can't happen"));
+    test(S("abcde"), 6, "12345", 0, S("can't happen"));
+    test(S("abcde"), 6, "12345", 1, S("can't happen"));
+    test(S("abcde"), 6, "12345", 2, S("can't happen"));
+    test(S("abcde"), 6, "12345", 4, S("can't happen"));
+    test(S("abcde"), 6, "12345", 5, S("can't happen"));
+    test(S("abcde"), 6, "1234567890", 0, S("can't happen"));
+    test(S("abcde"), 6, "1234567890", 1, S("can't happen"));
+    test(S("abcde"), 6, "1234567890", 5, S("can't happen"));
+    test(S("abcde"), 6, "1234567890", 9, S("can't happen"));
+    test(S("abcde"), 6, "1234567890", 10, S("can't happen"));
+    test(S("abcde"), 6, "12345678901234567890", 0, S("can't happen"));
+    test(S("abcde"), 6, "12345678901234567890", 1, S("can't happen"));
+    test(S("abcde"), 6, "12345678901234567890", 10, S("can't happen"));
+    test(S("abcde"), 6, "12345678901234567890", 19, S("can't happen"));
+    test(S("abcde"), 6, "12345678901234567890", 20, S("can't happen"));
+    test(S("abcdefghij"), 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, "12345", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, "12345", 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, "12345", 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, "12345", 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, "1234567890", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, "1234567890", 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, "1234567890", 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, "1234567890", 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, "12345678901234567890", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, "12345678901234567890", 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, "12345678901234567890", 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, "12345678901234567890", 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 1, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, "12345", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, "12345", 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, "12345", 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, "12345", 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, "1234567890", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, "1234567890", 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, "1234567890", 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, "1234567890", 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, "12345678901234567890", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, "12345678901234567890", 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, "12345678901234567890", 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, "12345678901234567890", 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 5, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, "12345", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, "12345", 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, "12345", 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, "12345", 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, "1234567890", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, "1234567890", 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, "1234567890", 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, "1234567890", 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, "12345678901234567890", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, "12345678901234567890", 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, "12345678901234567890", 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, "12345678901234567890", 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 9, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, "12345", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, "12345", 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, "12345", 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, "12345", 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, "1234567890", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, "1234567890", 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, "1234567890", 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, "1234567890", 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, "12345678901234567890", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, "12345678901234567890", 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, "12345678901234567890", 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, "12345678901234567890", 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 10, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 11, "", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345", 1, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345", 2, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345", 4, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345", 5, S("can't happen"));
+    test(S("abcdefghij"), 11, "1234567890", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, "1234567890", 1, S("can't happen"));
+    test(S("abcdefghij"), 11, "1234567890", 5, S("can't happen"));
+    test(S("abcdefghij"), 11, "1234567890", 9, S("can't happen"));
+    test(S("abcdefghij"), 11, "1234567890", 10, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345678901234567890", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345678901234567890", 1, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345678901234567890", 10, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345678901234567890", 19, S("can't happen"));
+    test(S("abcdefghij"), 11, "12345678901234567890", 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345", 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345", 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345", 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "1234567890", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "1234567890", 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "1234567890", 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "1234567890", 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345678901234567890", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345678901234567890", 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345678901234567890", 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, "12345678901234567890", 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345", 2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345", 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345", 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "1234567890", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "1234567890", 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "1234567890", 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "1234567890", 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345678901234567890", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345678901234567890", 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345678901234567890", 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, "12345678901234567890", 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345", 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345", 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345", 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "1234567890", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "1234567890", 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "1234567890", 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "1234567890", 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345678901234567890", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345678901234567890", 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345678901234567890", 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, "12345678901234567890", 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345", 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345", 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345", 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, "1234567890", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, "1234567890", 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, "1234567890", 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, "1234567890", 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345678901234567890", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345678901234567890", 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345678901234567890", 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, "12345678901234567890", 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 20, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345", 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345", 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, "1234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, "1234567890", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, "1234567890", 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, "1234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345678901234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345678901234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345678901234567890", 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, "12345678901234567890", 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 21, "", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345", 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345", 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345", 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345", 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "1234567890", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "1234567890", 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "1234567890", 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "1234567890", 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "1234567890", 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", 20, S("can't happen"));
+  }
+
+  { // test inserting into self
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.insert(0, s_short.data(), s_short.size());
+    assert(s_short == "123/123/");
+    s_short.insert(0, s_short.data(), s_short.size());
+    assert(s_short == "123/123/123/123/");
+    s_short.insert(0, s_short.data(), s_short.size());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.insert(0, s_long.data(), s_long.size());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#if TEST_STD_VER > 17
+  static_assert(test<std::string>());
+  static_assert(test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_size_char.pass.cpp
new file mode 100644
index 0000000..143fa54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_size_char.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   insert(size_type pos, size_type n, charT c); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, typename S::size_type n,
+     typename S::value_type str, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.insert(pos, n, str);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos, n, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, 0, '1', S(""));
+  test(S(""), 0, 5, '1', S("11111"));
+  test(S(""), 0, 10, '1', S("1111111111"));
+  test(S(""), 0, 20, '1', S("11111111111111111111"));
+  test(S(""), 1, 0, '1', S("can't happen"));
+  test(S(""), 1, 5, '1', S("can't happen"));
+  test(S(""), 1, 10, '1', S("can't happen"));
+  test(S(""), 1, 20, '1', S("can't happen"));
+  test(S("abcde"), 0, 0, '1', S("abcde"));
+  test(S("abcde"), 0, 5, '1', S("11111abcde"));
+  test(S("abcde"), 0, 10, '1', S("1111111111abcde"));
+  test(S("abcde"), 0, 20, '1', S("11111111111111111111abcde"));
+  test(S("abcde"), 1, 0, '1', S("abcde"));
+  test(S("abcde"), 1, 5, '1', S("a11111bcde"));
+  test(S("abcde"), 1, 10, '1', S("a1111111111bcde"));
+  test(S("abcde"), 1, 20, '1', S("a11111111111111111111bcde"));
+  test(S("abcde"), 2, 0, '1', S("abcde"));
+  test(S("abcde"), 2, 5, '1', S("ab11111cde"));
+  test(S("abcde"), 2, 10, '1', S("ab1111111111cde"));
+  test(S("abcde"), 2, 20, '1', S("ab11111111111111111111cde"));
+  test(S("abcde"), 4, 0, '1', S("abcde"));
+  test(S("abcde"), 4, 5, '1', S("abcd11111e"));
+  test(S("abcde"), 4, 10, '1', S("abcd1111111111e"));
+  test(S("abcde"), 4, 20, '1', S("abcd11111111111111111111e"));
+  test(S("abcde"), 5, 0, '1', S("abcde"));
+  test(S("abcde"), 5, 5, '1', S("abcde11111"));
+  test(S("abcde"), 5, 10, '1', S("abcde1111111111"));
+  test(S("abcde"), 5, 20, '1', S("abcde11111111111111111111"));
+  test(S("abcde"), 6, 0, '1', S("can't happen"));
+  test(S("abcde"), 6, 5, '1', S("can't happen"));
+  test(S("abcde"), 6, 10, '1', S("can't happen"));
+  test(S("abcde"), 6, 20, '1', S("can't happen"));
+  test(S("abcdefghij"), 0, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 0, 5, '1', S("11111abcdefghij"));
+  test(S("abcdefghij"), 0, 10, '1', S("1111111111abcdefghij"));
+  test(S("abcdefghij"), 0, 20, '1', S("11111111111111111111abcdefghij"));
+  test(S("abcdefghij"), 1, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 1, 5, '1', S("a11111bcdefghij"));
+  test(S("abcdefghij"), 1, 10, '1', S("a1111111111bcdefghij"));
+  test(S("abcdefghij"), 1, 20, '1', S("a11111111111111111111bcdefghij"));
+  test(S("abcdefghij"), 5, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 5, 5, '1', S("abcde11111fghij"));
+  test(S("abcdefghij"), 5, 10, '1', S("abcde1111111111fghij"));
+  test(S("abcdefghij"), 5, 20, '1', S("abcde11111111111111111111fghij"));
+  test(S("abcdefghij"), 9, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 9, 5, '1', S("abcdefghi11111j"));
+  test(S("abcdefghij"), 9, 10, '1', S("abcdefghi1111111111j"));
+  test(S("abcdefghij"), 9, 20, '1', S("abcdefghi11111111111111111111j"));
+  test(S("abcdefghij"), 10, 0, '1', S("abcdefghij"));
+  test(S("abcdefghij"), 10, 5, '1', S("abcdefghij11111"));
+  test(S("abcdefghij"), 10, 10, '1', S("abcdefghij1111111111"));
+  test(S("abcdefghij"), 10, 20, '1', S("abcdefghij11111111111111111111"));
+  test(S("abcdefghij"), 11, 0, '1', S("can't happen"));
+  test(S("abcdefghij"), 11, 5, '1', S("can't happen"));
+  test(S("abcdefghij"), 11, 10, '1', S("can't happen"));
+  test(S("abcdefghij"), 11, 20, '1', S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 0, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 5, '1', S("11111abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 10, '1', S("1111111111abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, 20, '1', S("11111111111111111111abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 5, '1', S("a11111bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 10, '1', S("a1111111111bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, 20, '1', S("a11111111111111111111bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 5, '1', S("abcdefghij11111klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 10, '1', S("abcdefghij1111111111klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, 20, '1', S("abcdefghij11111111111111111111klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, 5, '1', S("abcdefghijklmnopqrs11111t"));
+  test(S("abcdefghijklmnopqrst"), 19, 10, '1', S("abcdefghijklmnopqrs1111111111t"));
+  test(S("abcdefghijklmnopqrst"), 19, 20, '1', S("abcdefghijklmnopqrs11111111111111111111t"));
+  test(S("abcdefghijklmnopqrst"), 20, 0, '1', S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 20, 5, '1', S("abcdefghijklmnopqrst11111"));
+  test(S("abcdefghijklmnopqrst"), 20, 10, '1', S("abcdefghijklmnopqrst1111111111"));
+  test(S("abcdefghijklmnopqrst"), 20, 20, '1', S("abcdefghijklmnopqrst11111111111111111111"));
+  test(S("abcdefghijklmnopqrst"), 21, 0, '1', S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, 5, '1', S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, 10, '1', S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, 20, '1', S("can't happen"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
new file mode 100644
index 0000000..e3c8185
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   insert(size_type pos1, const basic_string& str); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, S str, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.insert(pos, str);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, S(""), S(""));
+  test(S(""), 0, S("12345"), S("12345"));
+  test(S(""), 0, S("1234567890"), S("1234567890"));
+  test(S(""), 0, S("12345678901234567890"), S("12345678901234567890"));
+  test(S(""), 1, S(""), S("can't happen"));
+  test(S(""), 1, S("12345"), S("can't happen"));
+  test(S(""), 1, S("1234567890"), S("can't happen"));
+  test(S(""), 1, S("12345678901234567890"), S("can't happen"));
+  test(S("abcde"), 0, S(""), S("abcde"));
+  test(S("abcde"), 0, S("12345"), S("12345abcde"));
+  test(S("abcde"), 0, S("1234567890"), S("1234567890abcde"));
+  test(S("abcde"), 0, S("12345678901234567890"), S("12345678901234567890abcde"));
+  test(S("abcde"), 1, S(""), S("abcde"));
+  test(S("abcde"), 1, S("12345"), S("a12345bcde"));
+  test(S("abcde"), 1, S("1234567890"), S("a1234567890bcde"));
+  test(S("abcde"), 1, S("12345678901234567890"), S("a12345678901234567890bcde"));
+  test(S("abcde"), 2, S(""), S("abcde"));
+  test(S("abcde"), 2, S("12345"), S("ab12345cde"));
+  test(S("abcde"), 2, S("1234567890"), S("ab1234567890cde"));
+  test(S("abcde"), 2, S("12345678901234567890"), S("ab12345678901234567890cde"));
+  test(S("abcde"), 4, S(""), S("abcde"));
+  test(S("abcde"), 4, S("12345"), S("abcd12345e"));
+  test(S("abcde"), 4, S("1234567890"), S("abcd1234567890e"));
+  test(S("abcde"), 4, S("12345678901234567890"), S("abcd12345678901234567890e"));
+  test(S("abcde"), 5, S(""), S("abcde"));
+  test(S("abcde"), 5, S("12345"), S("abcde12345"));
+  test(S("abcde"), 5, S("1234567890"), S("abcde1234567890"));
+  test(S("abcde"), 5, S("12345678901234567890"), S("abcde12345678901234567890"));
+  test(S("abcde"), 6, S(""), S("can't happen"));
+  test(S("abcde"), 6, S("12345"), S("can't happen"));
+  test(S("abcde"), 6, S("1234567890"), S("can't happen"));
+  test(S("abcde"), 6, S("12345678901234567890"), S("can't happen"));
+  test(S("abcdefghij"), 0, S(""), S("abcdefghij"));
+  test(S("abcdefghij"), 0, S("12345"), S("12345abcdefghij"));
+  test(S("abcdefghij"), 0, S("1234567890"), S("1234567890abcdefghij"));
+  test(S("abcdefghij"), 0, S("12345678901234567890"), S("12345678901234567890abcdefghij"));
+  test(S("abcdefghij"), 1, S(""), S("abcdefghij"));
+  test(S("abcdefghij"), 1, S("12345"), S("a12345bcdefghij"));
+  test(S("abcdefghij"), 1, S("1234567890"), S("a1234567890bcdefghij"));
+  test(S("abcdefghij"), 1, S("12345678901234567890"), S("a12345678901234567890bcdefghij"));
+  test(S("abcdefghij"), 5, S(""), S("abcdefghij"));
+  test(S("abcdefghij"), 5, S("12345"), S("abcde12345fghij"));
+  test(S("abcdefghij"), 5, S("1234567890"), S("abcde1234567890fghij"));
+  test(S("abcdefghij"), 5, S("12345678901234567890"), S("abcde12345678901234567890fghij"));
+  test(S("abcdefghij"), 9, S(""), S("abcdefghij"));
+  test(S("abcdefghij"), 9, S("12345"), S("abcdefghi12345j"));
+  test(S("abcdefghij"), 9, S("1234567890"), S("abcdefghi1234567890j"));
+  test(S("abcdefghij"), 9, S("12345678901234567890"), S("abcdefghi12345678901234567890j"));
+  test(S("abcdefghij"), 10, S(""), S("abcdefghij"));
+  test(S("abcdefghij"), 10, S("12345"), S("abcdefghij12345"));
+  test(S("abcdefghij"), 10, S("1234567890"), S("abcdefghij1234567890"));
+  test(S("abcdefghij"), 10, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+  test(S("abcdefghij"), 11, S(""), S("can't happen"));
+  test(S("abcdefghij"), 11, S("12345"), S("can't happen"));
+  test(S("abcdefghij"), 11, S("1234567890"), S("can't happen"));
+  test(S("abcdefghij"), 11, S("12345678901234567890"), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 0, S(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, S("12345"), S("12345abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), S("1234567890abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, S(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, S("12345"), S("a12345bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, S(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, S("12345"), S("abcdefghij12345klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), S("abcdefghij1234567890klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, S(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, S("12345"), S("abcdefghijklmnopqrs12345t"));
+  test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
+  test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
+  test(S("abcdefghijklmnopqrst"), 20, S(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 20, S("12345"), S("abcdefghijklmnopqrst12345"));
+  test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+  test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+  test(S("abcdefghijklmnopqrst"), 21, S(""), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, S("12345"), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), S("can't happen"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#if TEST_STD_VER >= 11
+  {   // LWG 2946
+    std::string s;
+    s.insert(0, {"abc", 1});
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string_size_size.pass.cpp
new file mode 100644
index 0000000..857d8c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/size_string_size_size.pass.cpp
@@ -0,0 +1,1869 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   insert(size_type pos1, const basic_string<charT,traits,Allocator>& str,
+//          size_type pos2, size_type n=npos); // constexpr since C++20
+// the "=npos" was added in C++14
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, S str, typename S::size_type pos2,
+     typename S::size_type n, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= str.size())
+    {
+        s.insert(pos1, str, pos2, n);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos1, str, pos2, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > str.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, typename S::size_type pos1, S str, typename S::size_type pos2, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= str.size())
+    {
+        s.insert(pos1, str, pos2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos1, str, pos2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > str.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, S(""), 0, 0, S(""));
+    test(S(""), 0, S(""), 0, 1, S(""));
+    test(S(""), 0, S(""), 1, 0, S("can't happen"));
+    test(S(""), 0, S("12345"), 0, 0, S(""));
+    test(S(""), 0, S("12345"), 0, 1, S("1"));
+    test(S(""), 0, S("12345"), 0, 2, S("12"));
+    test(S(""), 0, S("12345"), 0, 4, S("1234"));
+    test(S(""), 0, S("12345"), 0, 5, S("12345"));
+    test(S(""), 0, S("12345"), 0, 6, S("12345"));
+    test(S(""), 0, S("12345"), 1, 0, S(""));
+    test(S(""), 0, S("12345"), 1, 1, S("2"));
+    test(S(""), 0, S("12345"), 1, 2, S("23"));
+    test(S(""), 0, S("12345"), 1, 3, S("234"));
+    test(S(""), 0, S("12345"), 1, 4, S("2345"));
+    test(S(""), 0, S("12345"), 1, 5, S("2345"));
+    test(S(""), 0, S("12345"), 2, 0, S(""));
+    test(S(""), 0, S("12345"), 2, 1, S("3"));
+    test(S(""), 0, S("12345"), 2, 2, S("34"));
+    test(S(""), 0, S("12345"), 2, 3, S("345"));
+    test(S(""), 0, S("12345"), 2, 4, S("345"));
+    test(S(""), 0, S("12345"), 4, 0, S(""));
+    test(S(""), 0, S("12345"), 4, 1, S("5"));
+    test(S(""), 0, S("12345"), 4, 2, S("5"));
+    test(S(""), 0, S("12345"), 5, 0, S(""));
+    test(S(""), 0, S("12345"), 5, 1, S(""));
+    test(S(""), 0, S("12345"), 6, 0, S("can't happen"));
+    test(S(""), 0, S("1234567890"), 0, 0, S(""));
+    test(S(""), 0, S("1234567890"), 0, 1, S("1"));
+    test(S(""), 0, S("1234567890"), 0, 5, S("12345"));
+    test(S(""), 0, S("1234567890"), 0, 9, S("123456789"));
+    test(S(""), 0, S("1234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, S("1234567890"), 0, 11, S("1234567890"));
+    test(S(""), 0, S("1234567890"), 1, 0, S(""));
+    test(S(""), 0, S("1234567890"), 1, 1, S("2"));
+    test(S(""), 0, S("1234567890"), 1, 4, S("2345"));
+    test(S(""), 0, S("1234567890"), 1, 8, S("23456789"));
+    test(S(""), 0, S("1234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, S("1234567890"), 1, 10, S("234567890"));
+    test(S(""), 0, S("1234567890"), 5, 0, S(""));
+    test(S(""), 0, S("1234567890"), 5, 1, S("6"));
+    test(S(""), 0, S("1234567890"), 5, 2, S("67"));
+    test(S(""), 0, S("1234567890"), 5, 4, S("6789"));
+    test(S(""), 0, S("1234567890"), 5, 5, S("67890"));
+    test(S(""), 0, S("1234567890"), 5, 6, S("67890"));
+    test(S(""), 0, S("1234567890"), 9, 0, S(""));
+    test(S(""), 0, S("1234567890"), 9, 1, S("0"));
+    test(S(""), 0, S("1234567890"), 9, 2, S("0"));
+    test(S(""), 0, S("1234567890"), 10, 0, S(""));
+    test(S(""), 0, S("1234567890"), 10, 1, S(""));
+    test(S(""), 0, S("1234567890"), 11, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S(""), 0, S("12345678901234567890"), 0, 0, S(""));
+    test(S(""), 0, S("12345678901234567890"), 0, 1, S("1"));
+    test(S(""), 0, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S(""), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S(""), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S(""), 0, S("12345678901234567890"), 1, 0, S(""));
+    test(S(""), 0, S("12345678901234567890"), 1, 1, S("2"));
+    test(S(""), 0, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S(""), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S(""), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S(""), 0, S("12345678901234567890"), 10, 0, S(""));
+    test(S(""), 0, S("12345678901234567890"), 10, 1, S("1"));
+    test(S(""), 0, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S(""), 0, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S(""), 0, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S(""), 0, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S(""), 0, S("12345678901234567890"), 19, 0, S(""));
+    test(S(""), 0, S("12345678901234567890"), 19, 1, S("0"));
+    test(S(""), 0, S("12345678901234567890"), 19, 2, S("0"));
+    test(S(""), 0, S("12345678901234567890"), 20, 0, S(""));
+    test(S(""), 0, S("12345678901234567890"), 20, 1, S(""));
+    test(S(""), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S(""), 1, S(""), 0, 0, S("can't happen"));
+    test(S(""), 1, S(""), 0, 1, S("can't happen"));
+    test(S(""), 1, S(""), 1, 0, S("can't happen"));
+    test(S(""), 1, S("12345"), 0, 0, S("can't happen"));
+    test(S(""), 1, S("12345"), 0, 1, S("can't happen"));
+    test(S(""), 1, S("12345"), 0, 2, S("can't happen"));
+    test(S(""), 1, S("12345"), 0, 4, S("can't happen"));
+    test(S(""), 1, S("12345"), 0, 5, S("can't happen"));
+    test(S(""), 1, S("12345"), 0, 6, S("can't happen"));
+    test(S(""), 1, S("12345"), 1, 0, S("can't happen"));
+    test(S(""), 1, S("12345"), 1, 1, S("can't happen"));
+    test(S(""), 1, S("12345"), 1, 2, S("can't happen"));
+    test(S(""), 1, S("12345"), 1, 3, S("can't happen"));
+    test(S(""), 1, S("12345"), 1, 4, S("can't happen"));
+    test(S(""), 1, S("12345"), 1, 5, S("can't happen"));
+    test(S(""), 1, S("12345"), 2, 0, S("can't happen"));
+    test(S(""), 1, S("12345"), 2, 1, S("can't happen"));
+    test(S(""), 1, S("12345"), 2, 2, S("can't happen"));
+    test(S(""), 1, S("12345"), 2, 3, S("can't happen"));
+    test(S(""), 1, S("12345"), 2, 4, S("can't happen"));
+    test(S(""), 1, S("12345"), 4, 0, S("can't happen"));
+    test(S(""), 1, S("12345"), 4, 1, S("can't happen"));
+    test(S(""), 1, S("12345"), 4, 2, S("can't happen"));
+    test(S(""), 1, S("12345"), 5, 0, S("can't happen"));
+    test(S(""), 1, S("12345"), 5, 1, S("can't happen"));
+    test(S(""), 1, S("12345"), 6, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S(""), 1, S("1234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 0, 1, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 0, 5, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 0, 9, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 0, 11, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 1, 4, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 1, 8, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 1, 10, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 5, 0, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 5, 1, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 5, 2, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 5, 4, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 5, 5, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 5, 6, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 9, 0, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 9, 1, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 9, 2, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S(""), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 0, S(""), 0, 1, S("abcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, S("12345"), 0, 2, S("12abcde"));
+    test(S("abcde"), 0, S("12345"), 0, 4, S("1234abcde"));
+    test(S("abcde"), 0, S("12345"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, S("12345"), 0, 6, S("12345abcde"));
+    test(S("abcde"), 0, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, S("12345"), 1, 2, S("23abcde"));
+    test(S("abcde"), 0, S("12345"), 1, 3, S("234abcde"));
+    test(S("abcde"), 0, S("12345"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, S("12345"), 1, 5, S("2345abcde"));
+    test(S("abcde"), 0, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345"), 2, 1, S("3abcde"));
+    test(S("abcde"), 0, S("12345"), 2, 2, S("34abcde"));
+    test(S("abcde"), 0, S("12345"), 2, 3, S("345abcde"));
+    test(S("abcde"), 0, S("12345"), 2, 4, S("345abcde"));
+    test(S("abcde"), 0, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345"), 4, 1, S("5abcde"));
+    test(S("abcde"), 0, S("12345"), 4, 2, S("5abcde"));
+    test(S("abcde"), 0, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, S("1234567890"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, S("1234567890"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, S("1234567890"), 0, 9, S("123456789abcde"));
+    test(S("abcde"), 0, S("1234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, S("1234567890"), 0, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, S("1234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, S("1234567890"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, S("1234567890"), 1, 8, S("23456789abcde"));
+    test(S("abcde"), 0, S("1234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, S("1234567890"), 1, 10, S("234567890abcde"));
+    test(S("abcde"), 0, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, S("1234567890"), 5, 1, S("6abcde"));
+    test(S("abcde"), 0, S("1234567890"), 5, 2, S("67abcde"));
+    test(S("abcde"), 0, S("1234567890"), 5, 4, S("6789abcde"));
+    test(S("abcde"), 0, S("1234567890"), 5, 5, S("67890abcde"));
+    test(S("abcde"), 0, S("1234567890"), 5, 6, S("67890abcde"));
+    test(S("abcde"), 0, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 0, S("1234567890"), 9, 1, S("0abcde"));
+    test(S("abcde"), 0, S("1234567890"), 9, 2, S("0abcde"));
+    test(S("abcde"), 0, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 0, 1, S("1abcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 0, S("12345678901234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 10, 1, S("1abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 10, 5, S("12345abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 10, 9, S("123456789abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 10, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 10, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 19, 1, S("0abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 19, 2, S("0abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 1, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, S("12345"), 0, 2, S("a12bcde"));
+    test(S("abcde"), 1, S("12345"), 0, 4, S("a1234bcde"));
+    test(S("abcde"), 1, S("12345"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, S("12345"), 0, 6, S("a12345bcde"));
+    test(S("abcde"), 1, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, S("12345"), 1, 2, S("a23bcde"));
+    test(S("abcde"), 1, S("12345"), 1, 3, S("a234bcde"));
+    test(S("abcde"), 1, S("12345"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, S("12345"), 1, 5, S("a2345bcde"));
+    test(S("abcde"), 1, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345"), 2, 1, S("a3bcde"));
+    test(S("abcde"), 1, S("12345"), 2, 2, S("a34bcde"));
+    test(S("abcde"), 1, S("12345"), 2, 3, S("a345bcde"));
+    test(S("abcde"), 1, S("12345"), 2, 4, S("a345bcde"));
+    test(S("abcde"), 1, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345"), 4, 1, S("a5bcde"));
+    test(S("abcde"), 1, S("12345"), 4, 2, S("a5bcde"));
+    test(S("abcde"), 1, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, S("1234567890"), 0, 1, S("a1bcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcde"), 1, S("1234567890"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, S("1234567890"), 0, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, S("1234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, S("1234567890"), 0, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, S("1234567890"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, S("1234567890"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, S("1234567890"), 1, 8, S("a23456789bcde"));
+    test(S("abcde"), 1, S("1234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, S("1234567890"), 1, 10, S("a234567890bcde"));
+    test(S("abcde"), 1, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, S("1234567890"), 5, 1, S("a6bcde"));
+    test(S("abcde"), 1, S("1234567890"), 5, 2, S("a67bcde"));
+    test(S("abcde"), 1, S("1234567890"), 5, 4, S("a6789bcde"));
+    test(S("abcde"), 1, S("1234567890"), 5, 5, S("a67890bcde"));
+    test(S("abcde"), 1, S("1234567890"), 5, 6, S("a67890bcde"));
+    test(S("abcde"), 1, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 1, S("1234567890"), 9, 1, S("a0bcde"));
+    test(S("abcde"), 1, S("1234567890"), 9, 2, S("a0bcde"));
+    test(S("abcde"), 1, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 1, 18, S("a234567890123456789bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 10, 1, S("a1bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 10, 5, S("a12345bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 10, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 10, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 10, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 19, 1, S("a0bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 19, 2, S("a0bcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 2, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, S("12345"), 0, 0, S("abcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcde"), 2, S("12345"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, S("12345"), 0, 2, S("ab12cde"));
+    test(S("abcde"), 2, S("12345"), 0, 4, S("ab1234cde"));
+    test(S("abcde"), 2, S("12345"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, S("12345"), 0, 6, S("ab12345cde"));
+    test(S("abcde"), 2, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, S("12345"), 1, 2, S("ab23cde"));
+    test(S("abcde"), 2, S("12345"), 1, 3, S("ab234cde"));
+    test(S("abcde"), 2, S("12345"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, S("12345"), 1, 5, S("ab2345cde"));
+    test(S("abcde"), 2, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345"), 2, 1, S("ab3cde"));
+    test(S("abcde"), 2, S("12345"), 2, 2, S("ab34cde"));
+    test(S("abcde"), 2, S("12345"), 2, 3, S("ab345cde"));
+    test(S("abcde"), 2, S("12345"), 2, 4, S("ab345cde"));
+    test(S("abcde"), 2, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345"), 4, 1, S("ab5cde"));
+    test(S("abcde"), 2, S("12345"), 4, 2, S("ab5cde"));
+    test(S("abcde"), 2, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, S("1234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, S("1234567890"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, S("1234567890"), 0, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, S("1234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, S("1234567890"), 0, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, S("1234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, S("1234567890"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, S("1234567890"), 1, 8, S("ab23456789cde"));
+    test(S("abcde"), 2, S("1234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, S("1234567890"), 1, 10, S("ab234567890cde"));
+    test(S("abcde"), 2, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, S("1234567890"), 5, 1, S("ab6cde"));
+    test(S("abcde"), 2, S("1234567890"), 5, 2, S("ab67cde"));
+    test(S("abcde"), 2, S("1234567890"), 5, 4, S("ab6789cde"));
+    test(S("abcde"), 2, S("1234567890"), 5, 5, S("ab67890cde"));
+    test(S("abcde"), 2, S("1234567890"), 5, 6, S("ab67890cde"));
+    test(S("abcde"), 2, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 2, S("1234567890"), 9, 1, S("ab0cde"));
+    test(S("abcde"), 2, S("1234567890"), 9, 2, S("ab0cde"));
+    test(S("abcde"), 2, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 0, 19, S("ab1234567890123456789cde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcde"), 2, S("12345678901234567890"), 0, 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 0, 21, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 1, 18, S("ab234567890123456789cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 1, 19, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 1, 20, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 10, 1, S("ab1cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 10, 5, S("ab12345cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 10, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 10, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 10, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 19, 1, S("ab0cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 19, 2, S("ab0cde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 4, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 4, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, S("12345"), 0, 2, S("abcd12e"));
+    test(S("abcde"), 4, S("12345"), 0, 4, S("abcd1234e"));
+    test(S("abcde"), 4, S("12345"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, S("12345"), 0, 6, S("abcd12345e"));
+    test(S("abcde"), 4, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, S("12345"), 1, 2, S("abcd23e"));
+    test(S("abcde"), 4, S("12345"), 1, 3, S("abcd234e"));
+    test(S("abcde"), 4, S("12345"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, S("12345"), 1, 5, S("abcd2345e"));
+    test(S("abcde"), 4, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345"), 2, 1, S("abcd3e"));
+    test(S("abcde"), 4, S("12345"), 2, 2, S("abcd34e"));
+    test(S("abcde"), 4, S("12345"), 2, 3, S("abcd345e"));
+    test(S("abcde"), 4, S("12345"), 2, 4, S("abcd345e"));
+    test(S("abcde"), 4, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345"), 4, 1, S("abcd5e"));
+    test(S("abcde"), 4, S("12345"), 4, 2, S("abcd5e"));
+    test(S("abcde"), 4, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 4, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, S("1234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, S("1234567890"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, S("1234567890"), 0, 9, S("abcd123456789e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcde"), 4, S("1234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, S("1234567890"), 0, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, S("1234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, S("1234567890"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, S("1234567890"), 1, 8, S("abcd23456789e"));
+    test(S("abcde"), 4, S("1234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, S("1234567890"), 1, 10, S("abcd234567890e"));
+    test(S("abcde"), 4, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, S("1234567890"), 5, 1, S("abcd6e"));
+    test(S("abcde"), 4, S("1234567890"), 5, 2, S("abcd67e"));
+    test(S("abcde"), 4, S("1234567890"), 5, 4, S("abcd6789e"));
+    test(S("abcde"), 4, S("1234567890"), 5, 5, S("abcd67890e"));
+    test(S("abcde"), 4, S("1234567890"), 5, 6, S("abcd67890e"));
+    test(S("abcde"), 4, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 4, S("1234567890"), 9, 1, S("abcd0e"));
+    test(S("abcde"), 4, S("1234567890"), 9, 2, S("abcd0e"));
+    test(S("abcde"), 4, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 4, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345678901234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 0, 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 0, 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 0, 21, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345678901234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 1, 18, S("abcd234567890123456789e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 1, 19, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 1, 20, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345678901234567890"), 10, 1, S("abcd1e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 10, 5, S("abcd12345e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 10, 9, S("abcd123456789e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 10, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 10, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345678901234567890"), 19, 1, S("abcd0e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 19, 2, S("abcd0e"));
+    test(S("abcde"), 4, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 4, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 4, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 5, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 5, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 5, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, S("12345"), 0, 2, S("abcde12"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcde"), 5, S("12345"), 0, 4, S("abcde1234"));
+    test(S("abcde"), 5, S("12345"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, S("12345"), 0, 6, S("abcde12345"));
+    test(S("abcde"), 5, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, S("12345"), 1, 2, S("abcde23"));
+    test(S("abcde"), 5, S("12345"), 1, 3, S("abcde234"));
+    test(S("abcde"), 5, S("12345"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, S("12345"), 1, 5, S("abcde2345"));
+    test(S("abcde"), 5, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345"), 2, 1, S("abcde3"));
+    test(S("abcde"), 5, S("12345"), 2, 2, S("abcde34"));
+    test(S("abcde"), 5, S("12345"), 2, 3, S("abcde345"));
+    test(S("abcde"), 5, S("12345"), 2, 4, S("abcde345"));
+    test(S("abcde"), 5, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345"), 4, 1, S("abcde5"));
+    test(S("abcde"), 5, S("12345"), 4, 2, S("abcde5"));
+    test(S("abcde"), 5, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 5, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, S("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, S("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, S("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcde"), 5, S("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, S("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, S("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, S("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, S("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcde"), 5, S("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, S("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcde"), 5, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, S("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcde"), 5, S("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcde"), 5, S("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcde"), 5, S("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcde"), 5, S("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcde"), 5, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 5, S("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcde"), 5, S("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcde"), 5, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 5, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, S("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcde"), 5, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, S("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcde"), 5, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcde"), 5, S("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcde"), 5, S("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcde"), 5, S("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcde"), 5, S("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcde"), 5, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 5, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 6, S(""), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, S(""), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 0, 2, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 0, 4, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 0, 6, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 1, 2, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 1, 3, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 1, 5, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 2, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 2, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 2, 2, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 2, 3, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 2, 4, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 4, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 4, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 4, 2, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 0, 11, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcde"), 6, S("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcde"), 6, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 0, 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 0, 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 0, 5, S("12345abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test12()
+{
+    test(S("abcdefghij"), 0, S("12345"), 0, 6, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 1, 2, S("23abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 1, 3, S("234abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 1, 5, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 2, 1, S("3abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 2, 2, S("34abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 2, 3, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 2, 4, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 4, 1, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 4, 2, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 0, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 0, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 0, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 1, 8, S("23456789abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 1, 10, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 5, 1, S("6abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 5, 2, S("67abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 5, 4, S("6789abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 5, 5, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 5, 6, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 9, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 9, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 1, S("2abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test13()
+{
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 10, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 19, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 19, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 0, 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 0, 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 0, 6, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 1, 2, S("a23bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 1, 3, S("a234bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 1, 5, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 2, 1, S("a3bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 2, 2, S("a34bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 2, 3, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 2, 4, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 4, 1, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 4, 2, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 0, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 0, 11, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 1, 1, S("a2bcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test14()
+{
+    test(S("abcdefghij"), 1, S("1234567890"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 1, 8, S("a23456789bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 1, 10, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 5, 1, S("a6bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 5, 2, S("a67bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 5, 4, S("a6789bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 5, 5, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 5, 6, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 9, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 9, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 10, 11, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 19, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 19, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 0, 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 0, 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 0, 6, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 1, 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test15()
+{
+    test(S("abcdefghij"), 5, S("12345"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 1, 2, S("abcde23fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 1, 3, S("abcde234fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 1, 5, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345"), 2, 1, S("abcde3fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 2, 2, S("abcde34fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 2, 3, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 2, 4, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345"), 4, 1, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 4, 2, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 0, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 0, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 1, 8, S("abcde23456789fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 1, 10, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 5, 1, S("abcde6fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 5, 2, S("abcde67fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 5, 4, S("abcde6789fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 5, 5, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 5, 6, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 9, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 9, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 18, S("abcde234567890123456789fghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test16()
+{
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 10, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 19, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 19, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, S("12345"), 0, 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, S("12345"), 0, 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, S("12345"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, S("12345"), 0, 6, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, S("12345"), 1, 2, S("abcdefghi23j"));
+    test(S("abcdefghij"), 9, S("12345"), 1, 3, S("abcdefghi234j"));
+    test(S("abcdefghij"), 9, S("12345"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, S("12345"), 1, 5, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345"), 2, 1, S("abcdefghi3j"));
+    test(S("abcdefghij"), 9, S("12345"), 2, 2, S("abcdefghi34j"));
+    test(S("abcdefghij"), 9, S("12345"), 2, 3, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, S("12345"), 2, 4, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345"), 4, 1, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, S("12345"), 4, 2, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("1234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 0, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 0, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("1234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 1, 8, S("abcdefghi23456789j"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test17()
+{
+    test(S("abcdefghij"), 9, S("1234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 1, 10, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("1234567890"), 5, 1, S("abcdefghi6j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 5, 2, S("abcdefghi67j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 5, 4, S("abcdefghi6789j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 5, 5, S("abcdefghi67890j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 5, 6, S("abcdefghi67890j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("1234567890"), 9, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 9, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 10, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 19, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 19, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, S("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, S("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, S("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, S("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, S("12345"), 1, 2, S("abcdefghij23"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test18()
+{
+    test(S("abcdefghij"), 10, S("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghij"), 10, S("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, S("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghij"), 10, S("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghij"), 10, S("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, S("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, S("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, S("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, S("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, S("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, S("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, S("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, S("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghij"), 10, S("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, S("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghij"), 10, S("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghij"), 10, S("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghij"), 10, S("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, S("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, S("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test19()
+{
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S(""), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S(""), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 1, 10, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test20()
+{
+    test(S("abcdefghij"), 11, S("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 0, 6, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 2, S("23abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 3, S("234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 4, S("2345abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test21()
+{
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 1, 5, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 1, S("3abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 2, S("34abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 3, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 2, 4, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 4, 1, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 4, 2, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 0, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 4, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 8, S("23456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 1, 10, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 1, S("6abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 2, S("67abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 4, S("6789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 5, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 5, 6, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 9, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 9, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 1, S("1abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test22()
+{
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 10, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 19, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 19, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 0, 6, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 2, S("a23bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 3, S("a234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 1, 5, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 1, S("a3bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 2, S("a34bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 3, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 2, 4, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 4, 1, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 4, 2, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 0, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 8, S("a23456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 1, 10, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 1, S("a6bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test23()
+{
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 2, S("a67bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 4, S("a6789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 5, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 5, 6, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 9, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 9, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 10, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 19, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 19, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, 6, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 2, S("abcdefghij23klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 3, S("abcdefghij234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, 5, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test24()
+{
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 1, S("abcdefghij3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 2, S("abcdefghij34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 3, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 2, 4, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 4, 1, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 4, 2, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 0, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 8, S("abcdefghij23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 1, 10, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 1, S("abcdefghij6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 2, S("abcdefghij67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 4, S("abcdefghij6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 5, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 5, 6, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 9, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 9, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 9, S("abcdefghij123456789klmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test25()
+{
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 19, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 19, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 0, 6, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 2, S("abcdefghijklmnopqrs23t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 3, S("abcdefghijklmnopqrs234t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 1, 5, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 1, S("abcdefghijklmnopqrs3t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 2, S("abcdefghijklmnopqrs34t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 3, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 2, 4, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 4, 1, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 4, 2, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 1, S("abcdefghijklmnopqrs6t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 2, S("abcdefghijklmnopqrs67t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test26()
+{
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 9, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 9, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test27()
+{
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test28()
+{
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S(""), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S(""), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 5, 6, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test29()
+{
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, S("12345678901234567890"), 21, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test30()
+{
+    test_npos(S(""), 0, S("12345678901234567890"),  0, S("12345678901234567890"));
+    test_npos(S(""), 0, S("12345678901234567890"),  1, S( "2345678901234567890"));
+    test_npos(S(""), 0, S("12345678901234567890"),  2, S(  "345678901234567890"));
+    test_npos(S(""), 0, S("12345678901234567890"),  3, S(   "45678901234567890"));
+    test_npos(S(""), 0, S("12345678901234567890"),  5, S(     "678901234567890"));
+    test_npos(S(""), 0, S("12345678901234567890"), 10, S(          "1234567890"));
+    test_npos(S(""), 0, S("12345678901234567890"), 21, S("can't happen"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, S("12345"), 0, S("abcdefghij12345klmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, S("12345"), 1, S("abcdefghij2345klmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, S("12345"), 3, S("abcdefghij45klmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, S("12345"), 5, S("abcdefghijklmnopqrst"));
+    test_npos(S("abcdefghijklmnopqrst"), 10, S("12345"), 6, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+  test10<S>();
+  test11<S>();
+  test12<S>();
+  test13<S>();
+  test14<S>();
+  test15<S>();
+  test16<S>();
+  test17<S>();
+  test18<S>();
+  test19<S>();
+  test20<S>();
+  test21<S>();
+  test22<S>();
+  test23<S>();
+  test24<S>();
+  test25<S>();
+  test26<S>();
+  test27<S>();
+  test28<S>();
+  test29<S>();
+  test30<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+  static_assert(test10<S>());
+  static_assert(test11<S>());
+  static_assert(test12<S>());
+  static_assert(test13<S>());
+  static_assert(test14<S>());
+  static_assert(test15<S>());
+  static_assert(test16<S>());
+  static_assert(test17<S>());
+  static_assert(test18<S>());
+  static_assert(test19<S>());
+  static_assert(test20<S>());
+  static_assert(test21<S>());
+  static_assert(test22<S>());
+  static_assert(test23<S>());
+  static_assert(test24<S>());
+  static_assert(test25<S>());
+  static_assert(test26<S>());
+  static_assert(test27<S>());
+  static_assert(test28<S>());
+  static_assert(test29<S>());
+  static_assert(test30<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/string_view.pass.cpp
new file mode 100644
index 0000000..1f26a21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_insert/string_view.pass.cpp
@@ -0,0 +1,168 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   insert(size_type pos, string_view sv); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, SV sv, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.insert(pos, sv);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.insert(pos, sv);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(""), 0, SV(""), S(""));
+  test(S(""), 0, SV("12345"), S("12345"));
+  test(S(""), 0, SV("1234567890"), S("1234567890"));
+  test(S(""), 0, SV("12345678901234567890"), S("12345678901234567890"));
+  test(S(""), 1, SV(""), S("can't happen"));
+  test(S(""), 1, SV("12345"), S("can't happen"));
+  test(S(""), 1, SV("1234567890"), S("can't happen"));
+  test(S(""), 1, SV("12345678901234567890"), S("can't happen"));
+  test(S("abcde"), 0, SV(""), S("abcde"));
+  test(S("abcde"), 0, SV("12345"), S("12345abcde"));
+  test(S("abcde"), 0, SV("1234567890"), S("1234567890abcde"));
+  test(S("abcde"), 0, SV("12345678901234567890"), S("12345678901234567890abcde"));
+  test(S("abcde"), 1, SV(""), S("abcde"));
+  test(S("abcde"), 1, SV("12345"), S("a12345bcde"));
+  test(S("abcde"), 1, SV("1234567890"), S("a1234567890bcde"));
+  test(S("abcde"), 1, SV("12345678901234567890"), S("a12345678901234567890bcde"));
+  test(S("abcde"), 2, SV(""), S("abcde"));
+  test(S("abcde"), 2, SV("12345"), S("ab12345cde"));
+  test(S("abcde"), 2, SV("1234567890"), S("ab1234567890cde"));
+  test(S("abcde"), 2, SV("12345678901234567890"), S("ab12345678901234567890cde"));
+  test(S("abcde"), 4, SV(""), S("abcde"));
+  test(S("abcde"), 4, SV("12345"), S("abcd12345e"));
+  test(S("abcde"), 4, SV("1234567890"), S("abcd1234567890e"));
+  test(S("abcde"), 4, SV("12345678901234567890"), S("abcd12345678901234567890e"));
+  test(S("abcde"), 5, SV(""), S("abcde"));
+  test(S("abcde"), 5, SV("12345"), S("abcde12345"));
+  test(S("abcde"), 5, SV("1234567890"), S("abcde1234567890"));
+  test(S("abcde"), 5, SV("12345678901234567890"), S("abcde12345678901234567890"));
+  test(S("abcde"), 6, SV(""), S("can't happen"));
+  test(S("abcde"), 6, SV("12345"), S("can't happen"));
+  test(S("abcde"), 6, SV("1234567890"), S("can't happen"));
+  test(S("abcde"), 6, SV("12345678901234567890"), S("can't happen"));
+  test(S("abcdefghij"), 0, SV(""), S("abcdefghij"));
+  test(S("abcdefghij"), 0, SV("12345"), S("12345abcdefghij"));
+  test(S("abcdefghij"), 0, SV("1234567890"), S("1234567890abcdefghij"));
+  test(S("abcdefghij"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghij"));
+  test(S("abcdefghij"), 1, SV(""), S("abcdefghij"));
+  test(S("abcdefghij"), 1, SV("12345"), S("a12345bcdefghij"));
+  test(S("abcdefghij"), 1, SV("1234567890"), S("a1234567890bcdefghij"));
+  test(S("abcdefghij"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghij"));
+  test(S("abcdefghij"), 5, SV(""), S("abcdefghij"));
+  test(S("abcdefghij"), 5, SV("12345"), S("abcde12345fghij"));
+  test(S("abcdefghij"), 5, SV("1234567890"), S("abcde1234567890fghij"));
+  test(S("abcdefghij"), 5, SV("12345678901234567890"), S("abcde12345678901234567890fghij"));
+  test(S("abcdefghij"), 9, SV(""), S("abcdefghij"));
+  test(S("abcdefghij"), 9, SV("12345"), S("abcdefghi12345j"));
+  test(S("abcdefghij"), 9, SV("1234567890"), S("abcdefghi1234567890j"));
+  test(S("abcdefghij"), 9, SV("12345678901234567890"), S("abcdefghi12345678901234567890j"));
+  test(S("abcdefghij"), 10, SV(""), S("abcdefghij"));
+  test(S("abcdefghij"), 10, SV("12345"), S("abcdefghij12345"));
+  test(S("abcdefghij"), 10, SV("1234567890"), S("abcdefghij1234567890"));
+  test(S("abcdefghij"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+  test(S("abcdefghij"), 11, SV(""), S("can't happen"));
+  test(S("abcdefghij"), 11, SV("12345"), S("can't happen"));
+  test(S("abcdefghij"), 11, SV("1234567890"), S("can't happen"));
+  test(S("abcdefghij"), 11, SV("12345678901234567890"), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 0, SV(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, SV("12345"), S("12345abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, SV("1234567890"), S("1234567890abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 0, SV("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, SV(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, SV("12345"), S("a12345bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, SV("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 1, SV("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, SV(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, SV("12345"), S("abcdefghij12345klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, SV("1234567890"), S("abcdefghij1234567890klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, SV(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 19, SV("12345"), S("abcdefghijklmnopqrs12345t"));
+  test(S("abcdefghijklmnopqrst"), 19, SV("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
+  test(S("abcdefghijklmnopqrst"), 19, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
+  test(S("abcdefghijklmnopqrst"), 20, SV(""), S("abcdefghijklmnopqrst"));
+  test(S("abcdefghijklmnopqrst"), 20, SV("12345"), S("abcdefghijklmnopqrst12345"));
+  test(S("abcdefghijklmnopqrst"), 20, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+  test(S("abcdefghijklmnopqrst"), 20, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+  test(S("abcdefghijklmnopqrst"), 21, SV(""), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, SV("12345"), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, SV("1234567890"), S("can't happen"));
+  test(S("abcdefghijklmnopqrst"), 21, SV("12345678901234567890"), S("can't happen"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  { // test inserting into self
+    typedef std::string S;
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.insert(0, s_short.c_str());
+    assert(s_short == "123/123/");
+    s_short.insert(0, s_short.c_str());
+    assert(s_short == "123/123/123/123/");
+    s_short.insert(0, s_short.c_str());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.insert(0, s_long.c_str());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/char.pass.cpp
new file mode 100644
index 0000000..129bca4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/char.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>& operator+=(charT c); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::value_type str, S expected)
+{
+    s += str;
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(), 'a', S("a"));
+    test(S("12345"), 'a', S("12345a"));
+    test(S("1234567890"), 'a', S("1234567890a"));
+    test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(), 'a', S("a"));
+    test(S("12345"), 'a', S("12345a"));
+    test(S("1234567890"), 'a', S("1234567890a"));
+    test(S("12345678901234567890"), 'a', S("12345678901234567890a"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp
new file mode 100644
index 0000000..265df02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/initializer_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string& operator+=(initializer_list<charT> il); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s("123");
+    s += {'a', 'b', 'c'};
+    assert(s == "123abc");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s("123");
+    s += {'a', 'b', 'c'};
+    assert(s == "123abc");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp
new file mode 100644
index 0000000..645a582
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/pointer.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>& operator+=(const charT* s); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, const typename S::value_type* str, S expected)
+{
+    s += str;
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), "", S());
+  test(S(), "12345", S("12345"));
+  test(S(), "1234567890", S("1234567890"));
+  test(S(), "12345678901234567890", S("12345678901234567890"));
+
+  test(S("12345"), "", S("12345"));
+  test(S("12345"), "12345", S("1234512345"));
+  test(S("12345"), "1234567890", S("123451234567890"));
+  test(S("12345"), "12345678901234567890", S("1234512345678901234567890"));
+
+  test(S("1234567890"), "", S("1234567890"));
+  test(S("1234567890"), "12345", S("123456789012345"));
+  test(S("1234567890"), "1234567890", S("12345678901234567890"));
+  test(S("1234567890"), "12345678901234567890", S("123456789012345678901234567890"));
+
+  test(S("12345678901234567890"), "", S("12345678901234567890"));
+  test(S("12345678901234567890"), "12345", S("1234567890123456789012345"));
+  test(S("12345678901234567890"), "1234567890", S("123456789012345678901234567890"));
+  test(S("12345678901234567890"), "12345678901234567890",
+        S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp
new file mode 100644
index 0000000..c7ee062
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_op_plus_equal/string.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   operator+=(const basic_string<charT,traits,Allocator>& str); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, S str, S expected)
+{
+    s += str;
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(), S(), S());
+  test(S(), S("12345"), S("12345"));
+  test(S(), S("1234567890"), S("1234567890"));
+  test(S(), S("12345678901234567890"), S("12345678901234567890"));
+
+  test(S("12345"), S(), S("12345"));
+  test(S("12345"), S("12345"), S("1234512345"));
+  test(S("12345"), S("1234567890"), S("123451234567890"));
+  test(S("12345"), S("12345678901234567890"), S("1234512345678901234567890"));
+
+  test(S("1234567890"), S(), S("1234567890"));
+  test(S("1234567890"), S("12345"), S("123456789012345"));
+  test(S("1234567890"), S("1234567890"), S("12345678901234567890"));
+  test(S("1234567890"), S("12345678901234567890"), S("123456789012345678901234567890"));
+
+  test(S("12345678901234567890"), S(), S("12345678901234567890"));
+  test(S("12345678901234567890"), S("12345"), S("1234567890123456789012345"));
+  test(S("12345678901234567890"), S("1234567890"), S("123456789012345678901234567890"));
+  test(S("12345678901234567890"), S("12345678901234567890"),
+        S("1234567890123456789012345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s;
+    s += {"abc", 1};
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.pass.cpp
new file mode 100644
index 0000000..5f53c83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_initializer_list.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// basic_string& replace(const_iterator i1, const_iterator i2, initializer_list<charT> il); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    std::string s("123def456");
+    s.replace(s.cbegin() + 3, s.cbegin() + 6, {'a', 'b', 'c'});
+    assert(s == "123abc456");
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    S s("123def456");
+    s.replace(s.cbegin() + 3, s.cbegin() + 6, {'a', 'b', 'c'});
+    assert(s == "123abc456");
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_iter_iter.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_iter_iter.pass.cpp
new file mode 100644
index 0000000..5a1282c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_iter_iter.pass.cpp
@@ -0,0 +1,1081 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class InputIterator>
+//   basic_string&
+//   replace(const_iterator i1, const_iterator i2, InputIterator j1, InputIterator j2); // constexpr since C++20
+
+#include <string>
+#include <iterator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_iterators.h"
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, It f, It l, S expected)
+{
+    typename S::size_type old_size = s.size();
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+    typename S::size_type xlen = last - first;
+    s.replace(first, last, f, l);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    typename S::size_type rlen = std::distance(f, l);
+    assert(s.size() == old_size - xlen + rlen);
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Widget { operator char() const { throw 42; } };
+
+template <class S, class It>
+TEST_CONSTEXPR_CXX20 void
+test_exceptions(S s, typename S::size_type pos1, typename S::size_type n1, It f, It l)
+{
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+
+    S original = s;
+    typename S::iterator begin = s.begin();
+    typename S::iterator end = s.end();
+
+    try {
+        s.replace(first, last, f, l);
+        assert(false);
+    } catch (...) {}
+
+    // Part of "no effects" is that iterators and pointers
+    // into the string must not have been invalidated.
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == original);
+    assert(s.begin() == begin);
+    assert(s.end() == end);
+}
+#endif
+
+TEST_CONSTEXPR const char* str = "12345678901234567890";
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, str, str+0, S(""));
+    test(S(""), 0, 0, str, str+0, S(""));
+    test(S(""), 0, 0, str, str+1, S("1"));
+    test(S(""), 0, 0, str, str+2, S("12"));
+    test(S(""), 0, 0, str, str+4, S("1234"));
+    test(S(""), 0, 0, str, str+5, S("12345"));
+    test(S(""), 0, 0, str, str+0, S(""));
+    test(S(""), 0, 0, str, str+1, S("1"));
+    test(S(""), 0, 0, str, str+5, S("12345"));
+    test(S(""), 0, 0, str, str+9, S("123456789"));
+    test(S(""), 0, 0, str, str+10, S("1234567890"));
+    test(S(""), 0, 0, str, str+0, S(""));
+    test(S(""), 0, 0, str, str+1, S("1"));
+    test(S(""), 0, 0, str, str+10, S("1234567890"));
+    test(S(""), 0, 0, str, str+19, S("1234567890123456789"));
+    test(S(""), 0, 0, str, str+20, S("12345678901234567890"));
+    test(S("abcde"), 0, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 0, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 0, 0, str, str+1, S("1abcde"));
+    test(S("abcde"), 0, 0, str, str+2, S("12abcde"));
+    test(S("abcde"), 0, 0, str, str+4, S("1234abcde"));
+    test(S("abcde"), 0, 0, str, str+5, S("12345abcde"));
+    test(S("abcde"), 0, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 0, 0, str, str+1, S("1abcde"));
+    test(S("abcde"), 0, 0, str, str+5, S("12345abcde"));
+    test(S("abcde"), 0, 0, str, str+9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, str, str+10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 0, 0, str, str+1, S("1abcde"));
+    test(S("abcde"), 0, 0, str, str+10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, str, str+19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, 0, str, str+20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, str, str+0, S("bcde"));
+    test(S("abcde"), 0, 1, str, str+0, S("bcde"));
+    test(S("abcde"), 0, 1, str, str+1, S("1bcde"));
+    test(S("abcde"), 0, 1, str, str+2, S("12bcde"));
+    test(S("abcde"), 0, 1, str, str+4, S("1234bcde"));
+    test(S("abcde"), 0, 1, str, str+5, S("12345bcde"));
+    test(S("abcde"), 0, 1, str, str+0, S("bcde"));
+    test(S("abcde"), 0, 1, str, str+1, S("1bcde"));
+    test(S("abcde"), 0, 1, str, str+5, S("12345bcde"));
+    test(S("abcde"), 0, 1, str, str+9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, str, str+10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, str, str+0, S("bcde"));
+    test(S("abcde"), 0, 1, str, str+1, S("1bcde"));
+    test(S("abcde"), 0, 1, str, str+10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, str, str+19, S("1234567890123456789bcde"));
+    test(S("abcde"), 0, 1, str, str+20, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, str, str+0, S("cde"));
+    test(S("abcde"), 0, 2, str, str+0, S("cde"));
+    test(S("abcde"), 0, 2, str, str+1, S("1cde"));
+    test(S("abcde"), 0, 2, str, str+2, S("12cde"));
+    test(S("abcde"), 0, 2, str, str+4, S("1234cde"));
+    test(S("abcde"), 0, 2, str, str+5, S("12345cde"));
+    test(S("abcde"), 0, 2, str, str+0, S("cde"));
+    test(S("abcde"), 0, 2, str, str+1, S("1cde"));
+    test(S("abcde"), 0, 2, str, str+5, S("12345cde"));
+    test(S("abcde"), 0, 2, str, str+9, S("123456789cde"));
+    test(S("abcde"), 0, 2, str, str+10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, str, str+0, S("cde"));
+    test(S("abcde"), 0, 2, str, str+1, S("1cde"));
+    test(S("abcde"), 0, 2, str, str+10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, str, str+19, S("1234567890123456789cde"));
+    test(S("abcde"), 0, 2, str, str+20, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, str, str+0, S("e"));
+    test(S("abcde"), 0, 4, str, str+0, S("e"));
+    test(S("abcde"), 0, 4, str, str+1, S("1e"));
+    test(S("abcde"), 0, 4, str, str+2, S("12e"));
+    test(S("abcde"), 0, 4, str, str+4, S("1234e"));
+    test(S("abcde"), 0, 4, str, str+5, S("12345e"));
+    test(S("abcde"), 0, 4, str, str+0, S("e"));
+    test(S("abcde"), 0, 4, str, str+1, S("1e"));
+    test(S("abcde"), 0, 4, str, str+5, S("12345e"));
+    test(S("abcde"), 0, 4, str, str+9, S("123456789e"));
+    test(S("abcde"), 0, 4, str, str+10, S("1234567890e"));
+    test(S("abcde"), 0, 4, str, str+0, S("e"));
+    test(S("abcde"), 0, 4, str, str+1, S("1e"));
+    test(S("abcde"), 0, 4, str, str+10, S("1234567890e"));
+    test(S("abcde"), 0, 4, str, str+19, S("1234567890123456789e"));
+    test(S("abcde"), 0, 4, str, str+20, S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, str, str+0, S(""));
+    test(S("abcde"), 0, 5, str, str+0, S(""));
+    test(S("abcde"), 0, 5, str, str+1, S("1"));
+    test(S("abcde"), 0, 5, str, str+2, S("12"));
+    test(S("abcde"), 0, 5, str, str+4, S("1234"));
+    test(S("abcde"), 0, 5, str, str+5, S("12345"));
+    test(S("abcde"), 0, 5, str, str+0, S(""));
+    test(S("abcde"), 0, 5, str, str+1, S("1"));
+    test(S("abcde"), 0, 5, str, str+5, S("12345"));
+    test(S("abcde"), 0, 5, str, str+9, S("123456789"));
+    test(S("abcde"), 0, 5, str, str+10, S("1234567890"));
+    test(S("abcde"), 0, 5, str, str+0, S(""));
+    test(S("abcde"), 0, 5, str, str+1, S("1"));
+    test(S("abcde"), 0, 5, str, str+10, S("1234567890"));
+    test(S("abcde"), 0, 5, str, str+19, S("1234567890123456789"));
+    test(S("abcde"), 0, 5, str, str+20, S("12345678901234567890"));
+    test(S("abcde"), 1, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 1, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 1, 0, str, str+1, S("a1bcde"));
+    test(S("abcde"), 1, 0, str, str+2, S("a12bcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 1, 0, str, str+4, S("a1234bcde"));
+    test(S("abcde"), 1, 0, str, str+5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 1, 0, str, str+1, S("a1bcde"));
+    test(S("abcde"), 1, 0, str, str+5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, str, str+9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, str, str+10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 1, 0, str, str+1, S("a1bcde"));
+    test(S("abcde"), 1, 0, str, str+10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, str, str+19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, 0, str, str+20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, str, str+0, S("acde"));
+    test(S("abcde"), 1, 1, str, str+0, S("acde"));
+    test(S("abcde"), 1, 1, str, str+1, S("a1cde"));
+    test(S("abcde"), 1, 1, str, str+2, S("a12cde"));
+    test(S("abcde"), 1, 1, str, str+4, S("a1234cde"));
+    test(S("abcde"), 1, 1, str, str+5, S("a12345cde"));
+    test(S("abcde"), 1, 1, str, str+0, S("acde"));
+    test(S("abcde"), 1, 1, str, str+1, S("a1cde"));
+    test(S("abcde"), 1, 1, str, str+5, S("a12345cde"));
+    test(S("abcde"), 1, 1, str, str+9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, str, str+10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, str, str+0, S("acde"));
+    test(S("abcde"), 1, 1, str, str+1, S("a1cde"));
+    test(S("abcde"), 1, 1, str, str+10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, str, str+19, S("a1234567890123456789cde"));
+    test(S("abcde"), 1, 1, str, str+20, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, str, str+0, S("ade"));
+    test(S("abcde"), 1, 2, str, str+0, S("ade"));
+    test(S("abcde"), 1, 2, str, str+1, S("a1de"));
+    test(S("abcde"), 1, 2, str, str+2, S("a12de"));
+    test(S("abcde"), 1, 2, str, str+4, S("a1234de"));
+    test(S("abcde"), 1, 2, str, str+5, S("a12345de"));
+    test(S("abcde"), 1, 2, str, str+0, S("ade"));
+    test(S("abcde"), 1, 2, str, str+1, S("a1de"));
+    test(S("abcde"), 1, 2, str, str+5, S("a12345de"));
+    test(S("abcde"), 1, 2, str, str+9, S("a123456789de"));
+    test(S("abcde"), 1, 2, str, str+10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, str, str+0, S("ade"));
+    test(S("abcde"), 1, 2, str, str+1, S("a1de"));
+    test(S("abcde"), 1, 2, str, str+10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, str, str+19, S("a1234567890123456789de"));
+    test(S("abcde"), 1, 2, str, str+20, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, str, str+0, S("ae"));
+    test(S("abcde"), 1, 3, str, str+0, S("ae"));
+    test(S("abcde"), 1, 3, str, str+1, S("a1e"));
+    test(S("abcde"), 1, 3, str, str+2, S("a12e"));
+    test(S("abcde"), 1, 3, str, str+4, S("a1234e"));
+    test(S("abcde"), 1, 3, str, str+5, S("a12345e"));
+    test(S("abcde"), 1, 3, str, str+0, S("ae"));
+    test(S("abcde"), 1, 3, str, str+1, S("a1e"));
+    test(S("abcde"), 1, 3, str, str+5, S("a12345e"));
+    test(S("abcde"), 1, 3, str, str+9, S("a123456789e"));
+    test(S("abcde"), 1, 3, str, str+10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, str, str+0, S("ae"));
+    test(S("abcde"), 1, 3, str, str+1, S("a1e"));
+    test(S("abcde"), 1, 3, str, str+10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, str, str+19, S("a1234567890123456789e"));
+    test(S("abcde"), 1, 3, str, str+20, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, str, str+0, S("a"));
+    test(S("abcde"), 1, 4, str, str+0, S("a"));
+    test(S("abcde"), 1, 4, str, str+1, S("a1"));
+    test(S("abcde"), 1, 4, str, str+2, S("a12"));
+    test(S("abcde"), 1, 4, str, str+4, S("a1234"));
+    test(S("abcde"), 1, 4, str, str+5, S("a12345"));
+    test(S("abcde"), 1, 4, str, str+0, S("a"));
+    test(S("abcde"), 1, 4, str, str+1, S("a1"));
+    test(S("abcde"), 1, 4, str, str+5, S("a12345"));
+    test(S("abcde"), 1, 4, str, str+9, S("a123456789"));
+    test(S("abcde"), 1, 4, str, str+10, S("a1234567890"));
+    test(S("abcde"), 1, 4, str, str+0, S("a"));
+    test(S("abcde"), 1, 4, str, str+1, S("a1"));
+    test(S("abcde"), 1, 4, str, str+10, S("a1234567890"));
+    test(S("abcde"), 1, 4, str, str+19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 4, str, str+20, S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 2, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 2, 0, str, str+1, S("ab1cde"));
+    test(S("abcde"), 2, 0, str, str+2, S("ab12cde"));
+    test(S("abcde"), 2, 0, str, str+4, S("ab1234cde"));
+    test(S("abcde"), 2, 0, str, str+5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 2, 0, str, str+1, S("ab1cde"));
+    test(S("abcde"), 2, 0, str, str+5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, str, str+9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, str, str+10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 2, 0, str, str+1, S("ab1cde"));
+    test(S("abcde"), 2, 0, str, str+10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, str, str+19, S("ab1234567890123456789cde"));
+    test(S("abcde"), 2, 0, str, str+20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, str, str+0, S("abde"));
+    test(S("abcde"), 2, 1, str, str+0, S("abde"));
+    test(S("abcde"), 2, 1, str, str+1, S("ab1de"));
+    test(S("abcde"), 2, 1, str, str+2, S("ab12de"));
+    test(S("abcde"), 2, 1, str, str+4, S("ab1234de"));
+    test(S("abcde"), 2, 1, str, str+5, S("ab12345de"));
+    test(S("abcde"), 2, 1, str, str+0, S("abde"));
+    test(S("abcde"), 2, 1, str, str+1, S("ab1de"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcde"), 2, 1, str, str+5, S("ab12345de"));
+    test(S("abcde"), 2, 1, str, str+9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, str, str+10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, str, str+0, S("abde"));
+    test(S("abcde"), 2, 1, str, str+1, S("ab1de"));
+    test(S("abcde"), 2, 1, str, str+10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, str, str+19, S("ab1234567890123456789de"));
+    test(S("abcde"), 2, 1, str, str+20, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, str, str+0, S("abe"));
+    test(S("abcde"), 2, 2, str, str+0, S("abe"));
+    test(S("abcde"), 2, 2, str, str+1, S("ab1e"));
+    test(S("abcde"), 2, 2, str, str+2, S("ab12e"));
+    test(S("abcde"), 2, 2, str, str+4, S("ab1234e"));
+    test(S("abcde"), 2, 2, str, str+5, S("ab12345e"));
+    test(S("abcde"), 2, 2, str, str+0, S("abe"));
+    test(S("abcde"), 2, 2, str, str+1, S("ab1e"));
+    test(S("abcde"), 2, 2, str, str+5, S("ab12345e"));
+    test(S("abcde"), 2, 2, str, str+9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, str, str+10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, str, str+0, S("abe"));
+    test(S("abcde"), 2, 2, str, str+1, S("ab1e"));
+    test(S("abcde"), 2, 2, str, str+10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, str, str+19, S("ab1234567890123456789e"));
+    test(S("abcde"), 2, 2, str, str+20, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, str, str+0, S("ab"));
+    test(S("abcde"), 2, 3, str, str+0, S("ab"));
+    test(S("abcde"), 2, 3, str, str+1, S("ab1"));
+    test(S("abcde"), 2, 3, str, str+2, S("ab12"));
+    test(S("abcde"), 2, 3, str, str+4, S("ab1234"));
+    test(S("abcde"), 2, 3, str, str+5, S("ab12345"));
+    test(S("abcde"), 2, 3, str, str+0, S("ab"));
+    test(S("abcde"), 2, 3, str, str+1, S("ab1"));
+    test(S("abcde"), 2, 3, str, str+5, S("ab12345"));
+    test(S("abcde"), 2, 3, str, str+9, S("ab123456789"));
+    test(S("abcde"), 2, 3, str, str+10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, str, str+0, S("ab"));
+    test(S("abcde"), 2, 3, str, str+1, S("ab1"));
+    test(S("abcde"), 2, 3, str, str+10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, str, str+19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 3, str, str+20, S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 4, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 4, 0, str, str+1, S("abcd1e"));
+    test(S("abcde"), 4, 0, str, str+2, S("abcd12e"));
+    test(S("abcde"), 4, 0, str, str+4, S("abcd1234e"));
+    test(S("abcde"), 4, 0, str, str+5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 4, 0, str, str+1, S("abcd1e"));
+    test(S("abcde"), 4, 0, str, str+5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, str, str+9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, str, str+10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 4, 0, str, str+1, S("abcd1e"));
+    test(S("abcde"), 4, 0, str, str+10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, str, str+19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, 0, str, str+20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, str, str+0, S("abcd"));
+    test(S("abcde"), 4, 1, str, str+0, S("abcd"));
+    test(S("abcde"), 4, 1, str, str+1, S("abcd1"));
+    test(S("abcde"), 4, 1, str, str+2, S("abcd12"));
+    test(S("abcde"), 4, 1, str, str+4, S("abcd1234"));
+    test(S("abcde"), 4, 1, str, str+5, S("abcd12345"));
+    test(S("abcde"), 4, 1, str, str+0, S("abcd"));
+    test(S("abcde"), 4, 1, str, str+1, S("abcd1"));
+    test(S("abcde"), 4, 1, str, str+5, S("abcd12345"));
+    test(S("abcde"), 4, 1, str, str+9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, str, str+10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, str, str+0, S("abcd"));
+    test(S("abcde"), 4, 1, str, str+1, S("abcd1"));
+    test(S("abcde"), 4, 1, str, str+10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, str, str+19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 1, str, str+20, S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 5, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 5, 0, str, str+1, S("abcde1"));
+    test(S("abcde"), 5, 0, str, str+2, S("abcde12"));
+    test(S("abcde"), 5, 0, str, str+4, S("abcde1234"));
+    test(S("abcde"), 5, 0, str, str+5, S("abcde12345"));
+    test(S("abcde"), 5, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 5, 0, str, str+1, S("abcde1"));
+    test(S("abcde"), 5, 0, str, str+5, S("abcde12345"));
+    test(S("abcde"), 5, 0, str, str+9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, str, str+10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, str, str+0, S("abcde"));
+    test(S("abcde"), 5, 0, str, str+1, S("abcde1"));
+    test(S("abcde"), 5, 0, str, str+10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, str, str+19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 0, str, str+20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 0, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcdefghij"), 0, 0, str, str+1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, str, str+20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+2, S("12bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+4, S("1234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+19, S("1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, str, str+20, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, str, str+0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+2, S("12fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+4, S("1234fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+19, S("1234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, str, str+20, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, str, str+0, S("j"));
+    test(S("abcdefghij"), 0, 9, str, str+0, S("j"));
+    test(S("abcdefghij"), 0, 9, str, str+1, S("1j"));
+    test(S("abcdefghij"), 0, 9, str, str+2, S("12j"));
+    test(S("abcdefghij"), 0, 9, str, str+4, S("1234j"));
+    test(S("abcdefghij"), 0, 9, str, str+5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, str, str+0, S("j"));
+    test(S("abcdefghij"), 0, 9, str, str+1, S("1j"));
+    test(S("abcdefghij"), 0, 9, str, str+5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, str, str+9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, str, str+10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, str, str+0, S("j"));
+    test(S("abcdefghij"), 0, 9, str, str+1, S("1j"));
+    test(S("abcdefghij"), 0, 9, str, str+10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, str, str+19, S("1234567890123456789j"));
+    test(S("abcdefghij"), 0, 9, str, str+20, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, str, str+0, S(""));
+    test(S("abcdefghij"), 0, 10, str, str+0, S(""));
+    test(S("abcdefghij"), 0, 10, str, str+1, S("1"));
+    test(S("abcdefghij"), 0, 10, str, str+2, S("12"));
+    test(S("abcdefghij"), 0, 10, str, str+4, S("1234"));
+    test(S("abcdefghij"), 0, 10, str, str+5, S("12345"));
+    test(S("abcdefghij"), 0, 10, str, str+0, S(""));
+    test(S("abcdefghij"), 0, 10, str, str+1, S("1"));
+    test(S("abcdefghij"), 0, 10, str, str+5, S("12345"));
+    test(S("abcdefghij"), 0, 10, str, str+9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, str, str+10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, str, str+0, S(""));
+    test(S("abcdefghij"), 0, 10, str, str+1, S("1"));
+    test(S("abcdefghij"), 0, 10, str, str+10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, str, str+19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 10, str, str+20, S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, str, str+20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+2, S("a12cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+4, S("a1234cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+19, S("a1234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, str, str+20, S("a12345678901234567890cdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcdefghij"), 1, 4, str, str+0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, str, str+0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, str, str+1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+2, S("a12fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+4, S("a1234fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, str, str+1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, str, str+1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+19, S("a1234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, str, str+20, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, str, str+0, S("aj"));
+    test(S("abcdefghij"), 1, 8, str, str+0, S("aj"));
+    test(S("abcdefghij"), 1, 8, str, str+1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, str, str+2, S("a12j"));
+    test(S("abcdefghij"), 1, 8, str, str+4, S("a1234j"));
+    test(S("abcdefghij"), 1, 8, str, str+5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, str, str+0, S("aj"));
+    test(S("abcdefghij"), 1, 8, str, str+1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, str, str+5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, str, str+9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, str, str+10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, str, str+0, S("aj"));
+    test(S("abcdefghij"), 1, 8, str, str+1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, str, str+10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, str, str+19, S("a1234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, str, str+20, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, str, str+0, S("a"));
+    test(S("abcdefghij"), 1, 9, str, str+0, S("a"));
+    test(S("abcdefghij"), 1, 9, str, str+1, S("a1"));
+    test(S("abcdefghij"), 1, 9, str, str+2, S("a12"));
+    test(S("abcdefghij"), 1, 9, str, str+4, S("a1234"));
+    test(S("abcdefghij"), 1, 9, str, str+5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, str, str+0, S("a"));
+    test(S("abcdefghij"), 1, 9, str, str+1, S("a1"));
+    test(S("abcdefghij"), 1, 9, str, str+5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, str, str+9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, str, str+10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, str, str+0, S("a"));
+    test(S("abcdefghij"), 1, 9, str, str+1, S("a1"));
+    test(S("abcdefghij"), 1, 9, str, str+10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, str, str+19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 9, str, str+20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, str, str+1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, str, str+1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, str, str+1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, str, str+20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, str, str+0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, str, str+0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, str, str+1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+2, S("abcde12ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+4, S("abcde1234ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, str, str+1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, str, str+1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+19, S("abcde1234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, str, str+20, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, str, str+0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, str, str+0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, str, str+1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, str, str+2, S("abcde12hij"));
+    test(S("abcdefghij"), 5, 2, str, str+4, S("abcde1234hij"));
+    test(S("abcdefghij"), 5, 2, str, str+5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, str, str+0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, str, str+1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, str, str+5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, str, str+9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, str, str+10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, str, str+0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, str, str+1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, str, str+10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, str, str+19, S("abcde1234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, str, str+20, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, str, str+0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, str, str+0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, str, str+1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, str, str+2, S("abcde12j"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcdefghij"), 5, 4, str, str+4, S("abcde1234j"));
+    test(S("abcdefghij"), 5, 4, str, str+5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, str, str+0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, str, str+1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, str, str+5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, str, str+9, S("abcde123456789j"));
+    test(S("abcdefghij"), 5, 4, str, str+10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, str, str+0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, str, str+1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, str, str+10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, str, str+19, S("abcde1234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, str, str+20, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, str, str+0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, str, str+0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, str, str+1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, str, str+2, S("abcde12"));
+    test(S("abcdefghij"), 5, 5, str, str+4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 5, str, str+5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, str, str+0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, str, str+1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, str, str+5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, str, str+9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, str, str+10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, str, str+0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, str, str+1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, str, str+10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, str, str+19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 5, str, str+20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, str, str+1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, str, str+2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, 0, str, str+4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, 0, str, str+5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, str, str+1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, str, str+5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, str, str+9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, str, str+10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, str, str+1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, str, str+10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, str, str+19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, str, str+20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, str, str+0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, str, str+0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, str, str+1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, str, str+2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 1, str, str+4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 1, str, str+5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, str, str+0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, str, str+1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, str, str+5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, str, str+9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, str, str+10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, str, str+0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, str, str+1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, str, str+10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, str, str+19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 1, str, str+20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, str, str+1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, str, str+2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 0, str, str+4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 0, str, str+5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, str, str+1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, str, str+5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, str, str+9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, str, str+10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, str, str+0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, str, str+1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, str, str+10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, str, str+19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 0, str, str+20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, str, str+20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+2, S("12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+4, S("1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+1, S("1bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+19, S("1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, str, str+20, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+2, S("12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+4, S("1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+19, S("1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, str, str+20, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+2, S("12t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+4, S("1234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+19, S("1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, str, str+20, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, str, str+20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, str, str+20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+2, S("a12cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+4, S("a1234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+19, S("a1234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, str, str+20, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+2, S("a12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+4, S("a1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+0, S("aklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+19, S("a1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, str, str+20, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+2, S("a12t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+4, S("a1234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+19, S("a1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, str, str+20, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, str, str+20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, str, str+20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+2, S("abcdefghij12lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+4, S("abcdefghij1234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+19, S("abcdefghij1234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, str, str+20, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+2, S("abcdefghij12pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+4, S("abcdefghij1234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+19, S("abcdefghij1234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, str, str+20, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+2, S("abcdefghij12t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+4, S("abcdefghij1234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+19, S("abcdefghij1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, str, str+20, S("abcdefghij12345678901234567890t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, str, str+20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, str, str+20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, str, str+20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, str, str+20, S("abcdefghijklmnopqrst12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) { // test iterator operations that throw
+    typedef ThrowingIterator<char> TIter;
+    typedef cpp17_input_iterator<TIter> IIter;
+    const char* s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, IIter(TIter(s, s+10, 4, TIter::TAIncrement)), IIter(TIter()));
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, IIter(TIter(s, s+10, 5, TIter::TADereference)), IIter(TIter()));
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, IIter(TIter(s, s+10, 6, TIter::TAComparison)), IIter(TIter()));
+
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, TIter(s, s+10, 4, TIter::TAIncrement), TIter());
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, TIter(s, s+10, 5, TIter::TADereference), TIter());
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, TIter(s, s+10, 6, TIter::TAComparison), TIter());
+
+    Widget w[100];
+    test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, w, w+100);
+  }
+#endif
+
+  { // test replacing into self
+    S s_short = "123/";
+    S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+    s_short.replace(s_short.begin(), s_short.begin(), s_short.begin(), s_short.end());
+    assert(s_short == "123/123/");
+    s_short.replace(s_short.begin(), s_short.begin(), s_short.begin(), s_short.end());
+    assert(s_short == "123/123/123/123/");
+    s_short.replace(s_short.begin(), s_short.begin(), s_short.begin(), s_short.end());
+    assert(s_short == "123/123/123/123/123/123/123/123/");
+
+    s_long.replace(s_long.begin(), s_long.begin(), s_long.begin(), s_long.end());
+    assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+  }
+
+  { // test assigning a different type
+    const uint8_t pc[] = "ABCD";
+    uint8_t        p[] = "EFGH";
+
+    S s;
+    s.replace(s.begin(), s.end(), pc, pc + 4);
+    assert(s == "ABCD");
+
+    s.clear();
+    s.replace(s.begin(), s.end(), p, p + 4);
+    assert(s == "EFGH");
+  }
+
+  return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer.pass.cpp
new file mode 100644
index 0000000..b60cb34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer.pass.cpp
@@ -0,0 +1,322 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(const_iterator i1, const_iterator i2, const charT* s); // constexpr since C++20
+
+#include <stdio.h>
+
+#include <string>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, const typename S::value_type* str, S expected)
+{
+    typename S::size_type old_size = s.size();
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+    typename S::size_type xlen = last - first;
+    s.replace(first, last, str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    typename S::size_type rlen = S::traits_type::length(str);
+    assert(s.size() == old_size - xlen + rlen);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, "", S(""));
+    test(S(""), 0, 0, "12345", S("12345"));
+    test(S(""), 0, 0, "1234567890", S("1234567890"));
+    test(S(""), 0, 0, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcde"), 0, 0, "", S("abcde"));
+    test(S("abcde"), 0, 0, "12345", S("12345abcde"));
+    test(S("abcde"), 0, 0, "1234567890", S("1234567890abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, "", S("bcde"));
+    test(S("abcde"), 0, 1, "12345", S("12345bcde"));
+    test(S("abcde"), 0, 1, "1234567890", S("1234567890bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, "", S("cde"));
+    test(S("abcde"), 0, 2, "12345", S("12345cde"));
+    test(S("abcde"), 0, 2, "1234567890", S("1234567890cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, "", S("e"));
+    test(S("abcde"), 0, 4, "12345", S("12345e"));
+    test(S("abcde"), 0, 4, "1234567890", S("1234567890e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, "", S(""));
+    test(S("abcde"), 0, 5, "12345", S("12345"));
+    test(S("abcde"), 0, 5, "1234567890", S("1234567890"));
+    test(S("abcde"), 0, 5, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcde"), 1, 0, "", S("abcde"));
+    test(S("abcde"), 1, 0, "12345", S("a12345bcde"));
+    test(S("abcde"), 1, 0, "1234567890", S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, "", S("acde"));
+    test(S("abcde"), 1, 1, "12345", S("a12345cde"));
+    test(S("abcde"), 1, 1, "1234567890", S("a1234567890cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, "", S("ade"));
+    test(S("abcde"), 1, 2, "12345", S("a12345de"));
+    test(S("abcde"), 1, 2, "1234567890", S("a1234567890de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, "", S("ae"));
+    test(S("abcde"), 1, 3, "12345", S("a12345e"));
+    test(S("abcde"), 1, 3, "1234567890", S("a1234567890e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, "", S("a"));
+    test(S("abcde"), 1, 4, "12345", S("a12345"));
+    test(S("abcde"), 1, 4, "1234567890", S("a1234567890"));
+    test(S("abcde"), 1, 4, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, "", S("abcde"));
+    test(S("abcde"), 2, 0, "12345", S("ab12345cde"));
+    test(S("abcde"), 2, 0, "1234567890", S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, "", S("abde"));
+    test(S("abcde"), 2, 1, "12345", S("ab12345de"));
+    test(S("abcde"), 2, 1, "1234567890", S("ab1234567890de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, "", S("abe"));
+    test(S("abcde"), 2, 2, "12345", S("ab12345e"));
+    test(S("abcde"), 2, 2, "1234567890", S("ab1234567890e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, "", S("ab"));
+    test(S("abcde"), 2, 3, "12345", S("ab12345"));
+    test(S("abcde"), 2, 3, "1234567890", S("ab1234567890"));
+    test(S("abcde"), 2, 3, "12345678901234567890", S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, "", S("abcde"));
+    test(S("abcde"), 4, 0, "12345", S("abcd12345e"));
+    test(S("abcde"), 4, 0, "1234567890", S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, "", S("abcd"));
+    test(S("abcde"), 4, 1, "12345", S("abcd12345"));
+    test(S("abcde"), 4, 1, "1234567890", S("abcd1234567890"));
+    test(S("abcde"), 4, 1, "12345678901234567890", S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, "", S("abcde"));
+    test(S("abcde"), 5, 0, "12345", S("abcde12345"));
+    test(S("abcde"), 5, 0, "1234567890", S("abcde1234567890"));
+    test(S("abcde"), 5, 0, "12345678901234567890", S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 0, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, "", S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, "", S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, "", S("j"));
+    test(S("abcdefghij"), 0, 9, "12345", S("12345j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, "", S(""));
+    test(S("abcdefghij"), 0, 10, "12345", S("12345"));
+    test(S("abcdefghij"), 0, 10, "1234567890", S("1234567890"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, "", S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", S("a12345678901234567890cdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcdefghij"), 1, 4, "", S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345", S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, "", S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345", S("a12345j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, "", S("a"));
+    test(S("abcdefghij"), 1, 9, "12345", S("a12345"));
+    test(S("abcdefghij"), 1, 9, "1234567890", S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345", S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, "", S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345", S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, "", S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345", S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, "", S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345", S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, "", S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345", S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, "1234567890", S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345", S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, "", S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345", S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, "1234567890", S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345", S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, "1234567890", S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "", S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "", S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "", S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "", S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "", S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "", S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "", S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "", S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "", S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "", S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "", S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", S("abcdefghij12345678901234567890t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, "", S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "", S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", S("abcdefghijklmnopqrst12345678901234567890"));
+
+    { // test replacing into self
+      S s_short = "123/";
+      S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+      s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
+      assert(s_short == "123/123/");
+      s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
+      assert(s_short == "123/123/123/123/");
+      s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
+      assert(s_short == "123/123/123/123/123/123/123/123/");
+
+      s_long.replace(s_long.begin(), s_long.begin(), s_long.c_str());
+      assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+    }
+
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20 void test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S>());
+    static_assert(test1<S>());
+    static_assert(test2<S>());
+#endif
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S>());
+    static_assert(test1<S>());
+    static_assert(test2<S>());
+#endif
+  }
+#endif
+}
+
+int main(int, char**)
+{
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer_size.pass.cpp
new file mode 100644
index 0000000..81d7d8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer_size.pass.cpp
@@ -0,0 +1,1017 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(const_iterator i1, const_iterator i2, const charT* s, size_type n); // constexpr since C++20
+
+#include <string>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, const typename S::value_type* str,
+     typename S::size_type n2, S expected)
+{
+    typename S::size_type old_size = s.size();
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+    typename S::size_type xlen = last - first;
+    s.replace(first, last, str, n2);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    typename S::size_type rlen = n2;
+    assert(s.size() == old_size - xlen + rlen);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, "", 0, S(""));
+    test(S(""), 0, 0, "12345", 0, S(""));
+    test(S(""), 0, 0, "12345", 1, S("1"));
+    test(S(""), 0, 0, "12345", 2, S("12"));
+    test(S(""), 0, 0, "12345", 4, S("1234"));
+    test(S(""), 0, 0, "12345", 5, S("12345"));
+    test(S(""), 0, 0, "1234567890", 0, S(""));
+    test(S(""), 0, 0, "1234567890", 1, S("1"));
+    test(S(""), 0, 0, "1234567890", 5, S("12345"));
+    test(S(""), 0, 0, "1234567890", 9, S("123456789"));
+    test(S(""), 0, 0, "1234567890", 10, S("1234567890"));
+    test(S(""), 0, 0, "12345678901234567890", 0, S(""));
+    test(S(""), 0, 0, "12345678901234567890", 1, S("1"));
+    test(S(""), 0, 0, "12345678901234567890", 10, S("1234567890"));
+    test(S(""), 0, 0, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S(""), 0, 0, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcde"), 0, 0, "", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "12345", 1, S("1abcde"));
+    test(S("abcde"), 0, 0, "12345", 2, S("12abcde"));
+    test(S("abcde"), 0, 0, "12345", 4, S("1234abcde"));
+    test(S("abcde"), 0, 0, "12345", 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 1, S("1abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 1, S("1abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, "", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "12345", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "12345", 1, S("1bcde"));
+    test(S("abcde"), 0, 1, "12345", 2, S("12bcde"));
+    test(S("abcde"), 0, 1, "12345", 4, S("1234bcde"));
+    test(S("abcde"), 0, 1, "12345", 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 1, S("1bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 1, S("1bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 19, S("1234567890123456789bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 20, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, "", 0, S("cde"));
+    test(S("abcde"), 0, 2, "12345", 0, S("cde"));
+    test(S("abcde"), 0, 2, "12345", 1, S("1cde"));
+    test(S("abcde"), 0, 2, "12345", 2, S("12cde"));
+    test(S("abcde"), 0, 2, "12345", 4, S("1234cde"));
+    test(S("abcde"), 0, 2, "12345", 5, S("12345cde"));
+    test(S("abcde"), 0, 2, "1234567890", 0, S("cde"));
+    test(S("abcde"), 0, 2, "1234567890", 1, S("1cde"));
+    test(S("abcde"), 0, 2, "1234567890", 5, S("12345cde"));
+    test(S("abcde"), 0, 2, "1234567890", 9, S("123456789cde"));
+    test(S("abcde"), 0, 2, "1234567890", 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 0, S("cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 1, S("1cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 19, S("1234567890123456789cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 20, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, "", 0, S("e"));
+    test(S("abcde"), 0, 4, "12345", 0, S("e"));
+    test(S("abcde"), 0, 4, "12345", 1, S("1e"));
+    test(S("abcde"), 0, 4, "12345", 2, S("12e"));
+    test(S("abcde"), 0, 4, "12345", 4, S("1234e"));
+    test(S("abcde"), 0, 4, "12345", 5, S("12345e"));
+    test(S("abcde"), 0, 4, "1234567890", 0, S("e"));
+    test(S("abcde"), 0, 4, "1234567890", 1, S("1e"));
+    test(S("abcde"), 0, 4, "1234567890", 5, S("12345e"));
+    test(S("abcde"), 0, 4, "1234567890", 9, S("123456789e"));
+    test(S("abcde"), 0, 4, "1234567890", 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 0, S("e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 1, S("1e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 19, S("1234567890123456789e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 20, S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, "", 0, S(""));
+    test(S("abcde"), 0, 5, "12345", 0, S(""));
+    test(S("abcde"), 0, 5, "12345", 1, S("1"));
+    test(S("abcde"), 0, 5, "12345", 2, S("12"));
+    test(S("abcde"), 0, 5, "12345", 4, S("1234"));
+    test(S("abcde"), 0, 5, "12345", 5, S("12345"));
+    test(S("abcde"), 0, 5, "1234567890", 0, S(""));
+    test(S("abcde"), 0, 5, "1234567890", 1, S("1"));
+    test(S("abcde"), 0, 5, "1234567890", 5, S("12345"));
+    test(S("abcde"), 0, 5, "1234567890", 9, S("123456789"));
+    test(S("abcde"), 0, 5, "1234567890", 10, S("1234567890"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 0, S(""));
+    test(S("abcde"), 0, 5, "12345678901234567890", 1, S("1"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcde"), 1, 0, "", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "12345", 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, "12345", 2, S("a12bcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 1, 0, "12345", 4, S("a1234bcde"));
+    test(S("abcde"), 1, 0, "12345", 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "1234567890", 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, "", 0, S("acde"));
+    test(S("abcde"), 1, 1, "12345", 0, S("acde"));
+    test(S("abcde"), 1, 1, "12345", 1, S("a1cde"));
+    test(S("abcde"), 1, 1, "12345", 2, S("a12cde"));
+    test(S("abcde"), 1, 1, "12345", 4, S("a1234cde"));
+    test(S("abcde"), 1, 1, "12345", 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, "1234567890", 0, S("acde"));
+    test(S("abcde"), 1, 1, "1234567890", 1, S("a1cde"));
+    test(S("abcde"), 1, 1, "1234567890", 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, "1234567890", 9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, "1234567890", 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 0, S("acde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 1, S("a1cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 19, S("a1234567890123456789cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 20, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, "", 0, S("ade"));
+    test(S("abcde"), 1, 2, "12345", 0, S("ade"));
+    test(S("abcde"), 1, 2, "12345", 1, S("a1de"));
+    test(S("abcde"), 1, 2, "12345", 2, S("a12de"));
+    test(S("abcde"), 1, 2, "12345", 4, S("a1234de"));
+    test(S("abcde"), 1, 2, "12345", 5, S("a12345de"));
+    test(S("abcde"), 1, 2, "1234567890", 0, S("ade"));
+    test(S("abcde"), 1, 2, "1234567890", 1, S("a1de"));
+    test(S("abcde"), 1, 2, "1234567890", 5, S("a12345de"));
+    test(S("abcde"), 1, 2, "1234567890", 9, S("a123456789de"));
+    test(S("abcde"), 1, 2, "1234567890", 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 0, S("ade"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 1, S("a1de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 19, S("a1234567890123456789de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 20, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, "", 0, S("ae"));
+    test(S("abcde"), 1, 3, "12345", 0, S("ae"));
+    test(S("abcde"), 1, 3, "12345", 1, S("a1e"));
+    test(S("abcde"), 1, 3, "12345", 2, S("a12e"));
+    test(S("abcde"), 1, 3, "12345", 4, S("a1234e"));
+    test(S("abcde"), 1, 3, "12345", 5, S("a12345e"));
+    test(S("abcde"), 1, 3, "1234567890", 0, S("ae"));
+    test(S("abcde"), 1, 3, "1234567890", 1, S("a1e"));
+    test(S("abcde"), 1, 3, "1234567890", 5, S("a12345e"));
+    test(S("abcde"), 1, 3, "1234567890", 9, S("a123456789e"));
+    test(S("abcde"), 1, 3, "1234567890", 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 0, S("ae"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 1, S("a1e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 19, S("a1234567890123456789e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 20, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, "", 0, S("a"));
+    test(S("abcde"), 1, 4, "12345", 0, S("a"));
+    test(S("abcde"), 1, 4, "12345", 1, S("a1"));
+    test(S("abcde"), 1, 4, "12345", 2, S("a12"));
+    test(S("abcde"), 1, 4, "12345", 4, S("a1234"));
+    test(S("abcde"), 1, 4, "12345", 5, S("a12345"));
+    test(S("abcde"), 1, 4, "1234567890", 0, S("a"));
+    test(S("abcde"), 1, 4, "1234567890", 1, S("a1"));
+    test(S("abcde"), 1, 4, "1234567890", 5, S("a12345"));
+    test(S("abcde"), 1, 4, "1234567890", 9, S("a123456789"));
+    test(S("abcde"), 1, 4, "1234567890", 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 0, S("a"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 1, S("a1"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, "", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "12345", 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, "12345", 2, S("ab12cde"));
+    test(S("abcde"), 2, 0, "12345", 4, S("ab1234cde"));
+    test(S("abcde"), 2, 0, "12345", 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "1234567890", 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, "1234567890", 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, "1234567890", 9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, "1234567890", 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 19, S("ab1234567890123456789cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, "", 0, S("abde"));
+    test(S("abcde"), 2, 1, "12345", 0, S("abde"));
+    test(S("abcde"), 2, 1, "12345", 1, S("ab1de"));
+    test(S("abcde"), 2, 1, "12345", 2, S("ab12de"));
+    test(S("abcde"), 2, 1, "12345", 4, S("ab1234de"));
+    test(S("abcde"), 2, 1, "12345", 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, "1234567890", 0, S("abde"));
+    test(S("abcde"), 2, 1, "1234567890", 1, S("ab1de"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcde"), 2, 1, "1234567890", 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, "1234567890", 9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, "1234567890", 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 0, S("abde"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 1, S("ab1de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 19, S("ab1234567890123456789de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 20, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, "", 0, S("abe"));
+    test(S("abcde"), 2, 2, "12345", 0, S("abe"));
+    test(S("abcde"), 2, 2, "12345", 1, S("ab1e"));
+    test(S("abcde"), 2, 2, "12345", 2, S("ab12e"));
+    test(S("abcde"), 2, 2, "12345", 4, S("ab1234e"));
+    test(S("abcde"), 2, 2, "12345", 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, "1234567890", 0, S("abe"));
+    test(S("abcde"), 2, 2, "1234567890", 1, S("ab1e"));
+    test(S("abcde"), 2, 2, "1234567890", 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, "1234567890", 9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, "1234567890", 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 0, S("abe"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 1, S("ab1e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 19, S("ab1234567890123456789e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 20, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, "", 0, S("ab"));
+    test(S("abcde"), 2, 3, "12345", 0, S("ab"));
+    test(S("abcde"), 2, 3, "12345", 1, S("ab1"));
+    test(S("abcde"), 2, 3, "12345", 2, S("ab12"));
+    test(S("abcde"), 2, 3, "12345", 4, S("ab1234"));
+    test(S("abcde"), 2, 3, "12345", 5, S("ab12345"));
+    test(S("abcde"), 2, 3, "1234567890", 0, S("ab"));
+    test(S("abcde"), 2, 3, "1234567890", 1, S("ab1"));
+    test(S("abcde"), 2, 3, "1234567890", 5, S("ab12345"));
+    test(S("abcde"), 2, 3, "1234567890", 9, S("ab123456789"));
+    test(S("abcde"), 2, 3, "1234567890", 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 0, S("ab"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 1, S("ab1"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 20, S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, "", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "12345", 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, "12345", 2, S("abcd12e"));
+    test(S("abcde"), 4, 0, "12345", 4, S("abcd1234e"));
+    test(S("abcde"), 4, 0, "12345", 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "1234567890", 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, "1234567890", 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, "1234567890", 9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, "1234567890", 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, "", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "12345", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "12345", 1, S("abcd1"));
+    test(S("abcde"), 4, 1, "12345", 2, S("abcd12"));
+    test(S("abcde"), 4, 1, "12345", 4, S("abcd1234"));
+    test(S("abcde"), 4, 1, "12345", 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, "1234567890", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "1234567890", 1, S("abcd1"));
+    test(S("abcde"), 4, 1, "1234567890", 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, "1234567890", 9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, "1234567890", 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 1, S("abcd1"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, "", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "12345", 1, S("abcde1"));
+    test(S("abcde"), 5, 0, "12345", 2, S("abcde12"));
+    test(S("abcde"), 5, 0, "12345", 4, S("abcde1234"));
+    test(S("abcde"), 5, 0, "12345", 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "1234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, 0, "1234567890", 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, "1234567890", 9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 0, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, "", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 2, S("12bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 4, S("1234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 19, S("1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 20, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, "", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 2, S("12fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 4, S("1234fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 19, S("1234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 20, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, "", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "12345", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "12345", 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, "12345", 2, S("12j"));
+    test(S("abcdefghij"), 0, 9, "12345", 4, S("1234j"));
+    test(S("abcdefghij"), 0, 9, "12345", 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 19, S("1234567890123456789j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 20, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, "", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "12345", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "12345", 1, S("1"));
+    test(S("abcdefghij"), 0, 10, "12345", 2, S("12"));
+    test(S("abcdefghij"), 0, 10, "12345", 4, S("1234"));
+    test(S("abcdefghij"), 0, 10, "12345", 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "1234567890", 1, S("1"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 1, S("1"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, "", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 2, S("a12cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 4, S("a1234cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 19, S("a1234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 20, S("a12345678901234567890cdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcdefghij"), 1, 4, "", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 2, S("a12fghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 4, S("a1234fghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 19, S("a1234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 20, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, "", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345", 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, "12345", 2, S("a12j"));
+    test(S("abcdefghij"), 1, 8, "12345", 4, S("a1234j"));
+    test(S("abcdefghij"), 1, 8, "12345", 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 19, S("a1234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 20, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, "", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "12345", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "12345", 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, "12345", 2, S("a12"));
+    test(S("abcdefghij"), 1, 9, "12345", 4, S("a1234"));
+    test(S("abcdefghij"), 1, 9, "12345", 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, "", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 2, S("abcde12ghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 4, S("abcde1234ghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 19, S("abcde1234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 20, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, "", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345", 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, "12345", 2, S("abcde12hij"));
+    test(S("abcdefghij"), 5, 2, "12345", 4, S("abcde1234hij"));
+    test(S("abcdefghij"), 5, 2, "12345", 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 19, S("abcde1234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 20, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, "", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345", 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, "12345", 2, S("abcde12j"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcdefghij"), 5, 4, "12345", 4, S("abcde1234j"));
+    test(S("abcdefghij"), 5, 4, "12345", 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 9, S("abcde123456789j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 19, S("abcde1234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 20, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, "", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, "12345", 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 5, "12345", 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 5, "12345", 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, "12345", 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, 0, "12345", 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, 0, "12345", 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, "", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, "12345", 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 1, "12345", 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 1, "12345", 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 0, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 0, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 2, S("12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 4, S("1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 1, S("1bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 19, S("1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 20, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 2, S("12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 4, S("1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 19, S("1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 20, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 2, S("12t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 4, S("1234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 19, S("1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 20, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 2, S("a12cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 4, S("a1234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 19, S("a1234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 20, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 2, S("a12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 4, S("a1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 0, S("aklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 19, S("a1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 20, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 2, S("a12t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 4, S("a1234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 19, S("a1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 20, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 2, S("abcdefghij12lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 4, S("abcdefghij1234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 19, S("abcdefghij1234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 20, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 2, S("abcdefghij12pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 4, S("abcdefghij1234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 19, S("abcdefghij1234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 20, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 2, S("abcdefghij12t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 4, S("abcdefghij1234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 19, S("abcdefghij1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 20, S("abcdefghij12345678901234567890t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, "", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 20, S("abcdefghijklmnopqrst12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9() {
+  S s_short = "123/";
+  S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+
+  s_short.replace(s_short.begin(), s_short.begin(), s_short.data(), s_short.size());
+  assert(s_short == "123/123/");
+  s_short.replace(s_short.begin(), s_short.begin(), s_short.data(), s_short.size());
+  assert(s_short == "123/123/123/123/");
+  s_short.replace(s_short.begin(), s_short.begin(), s_short.data(), s_short.size());
+  assert(s_short == "123/123/123/123/123/123/123/123/");
+
+  s_long.replace(s_long.begin(), s_long.begin(), s_long.data(), s_long.size());
+  assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+
+  return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_size_char.pass.cpp
new file mode 100644
index 0000000..580ea28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_size_char.pass.cpp
@@ -0,0 +1,295 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(const_iterator i1, const_iterator i2, size_type n, charT c); // constexpr since C++20
+
+#include <string>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, typename S::size_type n2,
+     typename S::value_type c, S expected)
+{
+    typename S::size_type old_size = s.size();
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+    typename S::size_type xlen = last - first;
+    s.replace(first, last, n2, c);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    typename S::size_type rlen = n2;
+    assert(s.size() == old_size - xlen + rlen);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), 0, 0, 0, '3', S(""));
+    test(S(""), 0, 0, 5, '3', S("33333"));
+    test(S(""), 0, 0, 10, '3', S("3333333333"));
+    test(S(""), 0, 0, 20, '3', S("33333333333333333333"));
+    test(S("abcde"), 0, 0, 0, '3', S("abcde"));
+    test(S("abcde"), 0, 0, 5, '3', S("33333abcde"));
+    test(S("abcde"), 0, 0, 10, '3', S("3333333333abcde"));
+    test(S("abcde"), 0, 0, 20, '3', S("33333333333333333333abcde"));
+    test(S("abcde"), 0, 1, 0, '3', S("bcde"));
+    test(S("abcde"), 0, 1, 5, '3', S("33333bcde"));
+    test(S("abcde"), 0, 1, 10, '3', S("3333333333bcde"));
+    test(S("abcde"), 0, 1, 20, '3', S("33333333333333333333bcde"));
+    test(S("abcde"), 0, 2, 0, '3', S("cde"));
+    test(S("abcde"), 0, 2, 5, '3', S("33333cde"));
+    test(S("abcde"), 0, 2, 10, '3', S("3333333333cde"));
+    test(S("abcde"), 0, 2, 20, '3', S("33333333333333333333cde"));
+    test(S("abcde"), 0, 4, 0, '3', S("e"));
+    test(S("abcde"), 0, 4, 5, '3', S("33333e"));
+    test(S("abcde"), 0, 4, 10, '3', S("3333333333e"));
+    test(S("abcde"), 0, 4, 20, '3', S("33333333333333333333e"));
+    test(S("abcde"), 0, 5, 0, '3', S(""));
+    test(S("abcde"), 0, 5, 5, '3', S("33333"));
+    test(S("abcde"), 0, 5, 10, '3', S("3333333333"));
+    test(S("abcde"), 0, 5, 20, '3', S("33333333333333333333"));
+    test(S("abcde"), 1, 0, 0, '3', S("abcde"));
+    test(S("abcde"), 1, 0, 5, '3', S("a33333bcde"));
+    test(S("abcde"), 1, 0, 10, '3', S("a3333333333bcde"));
+    test(S("abcde"), 1, 0, 20, '3', S("a33333333333333333333bcde"));
+    test(S("abcde"), 1, 1, 0, '3', S("acde"));
+    test(S("abcde"), 1, 1, 5, '3', S("a33333cde"));
+    test(S("abcde"), 1, 1, 10, '3', S("a3333333333cde"));
+    test(S("abcde"), 1, 1, 20, '3', S("a33333333333333333333cde"));
+    test(S("abcde"), 1, 2, 0, '3', S("ade"));
+    test(S("abcde"), 1, 2, 5, '3', S("a33333de"));
+    test(S("abcde"), 1, 2, 10, '3', S("a3333333333de"));
+    test(S("abcde"), 1, 2, 20, '3', S("a33333333333333333333de"));
+    test(S("abcde"), 1, 3, 0, '3', S("ae"));
+    test(S("abcde"), 1, 3, 5, '3', S("a33333e"));
+    test(S("abcde"), 1, 3, 10, '3', S("a3333333333e"));
+    test(S("abcde"), 1, 3, 20, '3', S("a33333333333333333333e"));
+    test(S("abcde"), 1, 4, 0, '3', S("a"));
+    test(S("abcde"), 1, 4, 5, '3', S("a33333"));
+    test(S("abcde"), 1, 4, 10, '3', S("a3333333333"));
+    test(S("abcde"), 1, 4, 20, '3', S("a33333333333333333333"));
+    test(S("abcde"), 2, 0, 0, '3', S("abcde"));
+    test(S("abcde"), 2, 0, 5, '3', S("ab33333cde"));
+    test(S("abcde"), 2, 0, 10, '3', S("ab3333333333cde"));
+    test(S("abcde"), 2, 0, 20, '3', S("ab33333333333333333333cde"));
+    test(S("abcde"), 2, 1, 0, '3', S("abde"));
+    test(S("abcde"), 2, 1, 5, '3', S("ab33333de"));
+    test(S("abcde"), 2, 1, 10, '3', S("ab3333333333de"));
+    test(S("abcde"), 2, 1, 20, '3', S("ab33333333333333333333de"));
+    test(S("abcde"), 2, 2, 0, '3', S("abe"));
+    test(S("abcde"), 2, 2, 5, '3', S("ab33333e"));
+    test(S("abcde"), 2, 2, 10, '3', S("ab3333333333e"));
+    test(S("abcde"), 2, 2, 20, '3', S("ab33333333333333333333e"));
+    test(S("abcde"), 2, 3, 0, '3', S("ab"));
+    test(S("abcde"), 2, 3, 5, '3', S("ab33333"));
+    test(S("abcde"), 2, 3, 10, '3', S("ab3333333333"));
+    test(S("abcde"), 2, 3, 20, '3', S("ab33333333333333333333"));
+    test(S("abcde"), 4, 0, 0, '3', S("abcde"));
+    test(S("abcde"), 4, 0, 5, '3', S("abcd33333e"));
+    test(S("abcde"), 4, 0, 10, '3', S("abcd3333333333e"));
+    test(S("abcde"), 4, 0, 20, '3', S("abcd33333333333333333333e"));
+    test(S("abcde"), 4, 1, 0, '3', S("abcd"));
+    test(S("abcde"), 4, 1, 5, '3', S("abcd33333"));
+    test(S("abcde"), 4, 1, 10, '3', S("abcd3333333333"));
+    test(S("abcde"), 4, 1, 20, '3', S("abcd33333333333333333333"));
+    test(S("abcde"), 5, 0, 0, '3', S("abcde"));
+    test(S("abcde"), 5, 0, 5, '3', S("abcde33333"));
+    test(S("abcde"), 5, 0, 10, '3', S("abcde3333333333"));
+    test(S("abcde"), 5, 0, 20, '3', S("abcde33333333333333333333"));
+    test(S("abcdefghij"), 0, 0, 0, '3', S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, 5, '3', S("33333abcdefghij"));
+    test(S("abcdefghij"), 0, 0, 10, '3', S("3333333333abcdefghij"));
+    test(S("abcdefghij"), 0, 0, 20, '3', S("33333333333333333333abcdefghij"));
+    test(S("abcdefghij"), 0, 1, 0, '3', S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, 5, '3', S("33333bcdefghij"));
+    test(S("abcdefghij"), 0, 1, 10, '3', S("3333333333bcdefghij"));
+    test(S("abcdefghij"), 0, 1, 20, '3', S("33333333333333333333bcdefghij"));
+    test(S("abcdefghij"), 0, 5, 0, '3', S("fghij"));
+    test(S("abcdefghij"), 0, 5, 5, '3', S("33333fghij"));
+    test(S("abcdefghij"), 0, 5, 10, '3', S("3333333333fghij"));
+    test(S("abcdefghij"), 0, 5, 20, '3', S("33333333333333333333fghij"));
+    test(S("abcdefghij"), 0, 9, 0, '3', S("j"));
+    test(S("abcdefghij"), 0, 9, 5, '3', S("33333j"));
+    test(S("abcdefghij"), 0, 9, 10, '3', S("3333333333j"));
+    test(S("abcdefghij"), 0, 9, 20, '3', S("33333333333333333333j"));
+    test(S("abcdefghij"), 0, 10, 0, '3', S(""));
+    test(S("abcdefghij"), 0, 10, 5, '3', S("33333"));
+    test(S("abcdefghij"), 0, 10, 10, '3', S("3333333333"));
+    test(S("abcdefghij"), 0, 10, 20, '3', S("33333333333333333333"));
+    test(S("abcdefghij"), 1, 0, 0, '3', S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, 5, '3', S("a33333bcdefghij"));
+    test(S("abcdefghij"), 1, 0, 10, '3', S("a3333333333bcdefghij"));
+    test(S("abcdefghij"), 1, 0, 20, '3', S("a33333333333333333333bcdefghij"));
+    test(S("abcdefghij"), 1, 1, 0, '3', S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, 5, '3', S("a33333cdefghij"));
+    test(S("abcdefghij"), 1, 1, 10, '3', S("a3333333333cdefghij"));
+    test(S("abcdefghij"), 1, 1, 20, '3', S("a33333333333333333333cdefghij"));
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("abcdefghij"), 1, 4, 0, '3', S("afghij"));
+    test(S("abcdefghij"), 1, 4, 5, '3', S("a33333fghij"));
+    test(S("abcdefghij"), 1, 4, 10, '3', S("a3333333333fghij"));
+    test(S("abcdefghij"), 1, 4, 20, '3', S("a33333333333333333333fghij"));
+    test(S("abcdefghij"), 1, 8, 0, '3', S("aj"));
+    test(S("abcdefghij"), 1, 8, 5, '3', S("a33333j"));
+    test(S("abcdefghij"), 1, 8, 10, '3', S("a3333333333j"));
+    test(S("abcdefghij"), 1, 8, 20, '3', S("a33333333333333333333j"));
+    test(S("abcdefghij"), 1, 9, 0, '3', S("a"));
+    test(S("abcdefghij"), 1, 9, 5, '3', S("a33333"));
+    test(S("abcdefghij"), 1, 9, 10, '3', S("a3333333333"));
+    test(S("abcdefghij"), 1, 9, 20, '3', S("a33333333333333333333"));
+    test(S("abcdefghij"), 5, 0, 0, '3', S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, 5, '3', S("abcde33333fghij"));
+    test(S("abcdefghij"), 5, 0, 10, '3', S("abcde3333333333fghij"));
+    test(S("abcdefghij"), 5, 0, 20, '3', S("abcde33333333333333333333fghij"));
+    test(S("abcdefghij"), 5, 1, 0, '3', S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, 5, '3', S("abcde33333ghij"));
+    test(S("abcdefghij"), 5, 1, 10, '3', S("abcde3333333333ghij"));
+    test(S("abcdefghij"), 5, 1, 20, '3', S("abcde33333333333333333333ghij"));
+    test(S("abcdefghij"), 5, 2, 0, '3', S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, 5, '3', S("abcde33333hij"));
+    test(S("abcdefghij"), 5, 2, 10, '3', S("abcde3333333333hij"));
+    test(S("abcdefghij"), 5, 2, 20, '3', S("abcde33333333333333333333hij"));
+    test(S("abcdefghij"), 5, 4, 0, '3', S("abcdej"));
+    test(S("abcdefghij"), 5, 4, 5, '3', S("abcde33333j"));
+    test(S("abcdefghij"), 5, 4, 10, '3', S("abcde3333333333j"));
+    test(S("abcdefghij"), 5, 4, 20, '3', S("abcde33333333333333333333j"));
+    test(S("abcdefghij"), 5, 5, 0, '3', S("abcde"));
+    test(S("abcdefghij"), 5, 5, 5, '3', S("abcde33333"));
+    test(S("abcdefghij"), 5, 5, 10, '3', S("abcde3333333333"));
+    test(S("abcdefghij"), 5, 5, 20, '3', S("abcde33333333333333333333"));
+    test(S("abcdefghij"), 9, 0, 0, '3', S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, 5, '3', S("abcdefghi33333j"));
+    test(S("abcdefghij"), 9, 0, 10, '3', S("abcdefghi3333333333j"));
+    test(S("abcdefghij"), 9, 0, 20, '3', S("abcdefghi33333333333333333333j"));
+    test(S("abcdefghij"), 9, 1, 0, '3', S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, 5, '3', S("abcdefghi33333"));
+    test(S("abcdefghij"), 9, 1, 10, '3', S("abcdefghi3333333333"));
+    test(S("abcdefghij"), 9, 1, 20, '3', S("abcdefghi33333333333333333333"));
+    test(S("abcdefghij"), 10, 0, 0, '3', S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, 5, '3', S("abcdefghij33333"));
+    test(S("abcdefghij"), 10, 0, 10, '3', S("abcdefghij3333333333"));
+    test(S("abcdefghij"), 10, 0, 20, '3', S("abcdefghij33333333333333333333"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 0, '3', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 5, '3', S("33333abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 10, '3', S("3333333333abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 20, '3', S("33333333333333333333abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 0, '3', S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 5, '3', S("33333bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 10, '3', S("3333333333bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 20, '3', S("33333333333333333333bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 0, '3', S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 5, '3', S("33333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 10, '3', S("3333333333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 20, '3', S("33333333333333333333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 0, '3', S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 5, '3', S("33333t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 10, '3', S("3333333333t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 20, '3', S("33333333333333333333t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 0, '3', S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 5, '3', S("33333"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 10, '3', S("3333333333"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 20, '3', S("33333333333333333333"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 0, '3', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 5, '3', S("a33333bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 10, '3', S("a3333333333bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 20, '3', S("a33333333333333333333bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 0, '3', S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 5, '3', S("a33333cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 10, '3', S("a3333333333cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 20, '3', S("a33333333333333333333cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 0, '3', S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 5, '3', S("a33333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 10, '3', S("a3333333333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 20, '3', S("a33333333333333333333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 0, '3', S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 5, '3', S("a33333t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 10, '3', S("a3333333333t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 20, '3', S("a33333333333333333333t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 0, '3', S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 5, '3', S("a33333"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 10, '3', S("a3333333333"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 20, '3', S("a33333333333333333333"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 0, '3', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 5, '3', S("abcdefghij33333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 10, '3', S("abcdefghij3333333333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 20, '3', S("abcdefghij33333333333333333333klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 0, '3', S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 5, '3', S("abcdefghij33333lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 10, '3', S("abcdefghij3333333333lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 20, '3', S("abcdefghij33333333333333333333lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 0, '3', S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 5, '3', S("abcdefghij33333pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 10, '3', S("abcdefghij3333333333pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 20, '3', S("abcdefghij33333333333333333333pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 0, '3', S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 5, '3', S("abcdefghij33333t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 10, '3', S("abcdefghij3333333333t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 20, '3', S("abcdefghij33333333333333333333t"));
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, 0, '3', S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 5, '3', S("abcdefghij33333"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 10, '3', S("abcdefghij3333333333"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 20, '3', S("abcdefghij33333333333333333333"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 0, '3', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 5, '3', S("abcdefghijklmnopqrs33333t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 10, '3', S("abcdefghijklmnopqrs3333333333t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 20, '3', S("abcdefghijklmnopqrs33333333333333333333t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 0, '3', S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 5, '3', S("abcdefghijklmnopqrs33333"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 10, '3', S("abcdefghijklmnopqrs3333333333"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 20, '3', S("abcdefghijklmnopqrs33333333333333333333"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 0, '3', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 5, '3', S("abcdefghijklmnopqrst33333"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 10, '3', S("abcdefghijklmnopqrst3333333333"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 20, '3', S("abcdefghijklmnopqrst33333333333333333333"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp
new file mode 100644
index 0000000..3cf5dbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string.pass.cpp
@@ -0,0 +1,304 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(const_iterator i1, const_iterator i2, const basic_string& str); // constexpr since C++20
+
+#include <string>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, S str, S expected)
+{
+    typename S::size_type old_size = s.size();
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+    typename S::size_type xlen = last - first;
+    s.replace(first, last, str);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    typename S::size_type rlen = str.size();
+    assert(s.size() == old_size - xlen + rlen);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, S(""), S(""));
+    test(S(""), 0, 0, S("12345"), S("12345"));
+    test(S(""), 0, 0, S("1234567890"), S("1234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 0, 0, S(""), S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), S("12345abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, S(""), S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), S("12345bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, S(""), S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), S("12345cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, S(""), S("e"));
+    test(S("abcde"), 0, 4, S("12345"), S("12345e"));
+    test(S("abcde"), 0, 4, S("1234567890"), S("1234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, S(""), S(""));
+    test(S("abcde"), 0, 5, S("12345"), S("12345"));
+    test(S("abcde"), 0, 5, S("1234567890"), S("1234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 1, 0, S(""), S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), S("a12345bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, S(""), S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), S("a12345cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, S(""), S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), S("a12345de"));
+    test(S("abcde"), 1, 2, S("1234567890"), S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, S(""), S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), S("a12345e"));
+    test(S("abcde"), 1, 3, S("1234567890"), S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, S(""), S("a"));
+    test(S("abcde"), 1, 4, S("12345"), S("a12345"));
+    test(S("abcde"), 1, 4, S("1234567890"), S("a1234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, S(""), S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), S("ab12345cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, S(""), S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), S("ab12345de"));
+    test(S("abcde"), 2, 1, S("1234567890"), S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, S(""), S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), S("ab12345e"));
+    test(S("abcde"), 2, 2, S("1234567890"), S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, S(""), S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), S("ab12345"));
+    test(S("abcde"), 2, 3, S("1234567890"), S("ab1234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, S(""), S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), S("abcd12345e"));
+    test(S("abcde"), 4, 0, S("1234567890"), S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, S(""), S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), S("abcd12345"));
+    test(S("abcde"), 4, 1, S("1234567890"), S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, S(""), S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), S("abcde12345"));
+    test(S("abcde"), 5, 0, S("1234567890"), S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 0, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, S(""), S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, S(""), S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, S(""), S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), S("12345j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, S(""), S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), S("12345"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, S(""), S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcdefghij"), 1, 4, S(""), S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, S(""), S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), S("a12345j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, S(""), S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), S("a12345"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, S(""), S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, S(""), S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, S(""), S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, S(""), S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, S(""), S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), S("abcdefghij12345678901234567890t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  {
+    test0<S>();
+    test1<S>();
+    test2<S>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S>());
+    static_assert(test1<S>());
+    static_assert(test2<S>());
+#endif
+  }
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = "  ";
+    s.replace(s.cbegin(), s.cend(), {"abc", 1});
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string_view.pass.cpp
new file mode 100644
index 0000000..2bbfc1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_string_view.pass.cpp
@@ -0,0 +1,307 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(const_iterator i1, const_iterator i2, basic_string_view<charT,traits> sv); // constexpr since C++20
+
+#include <string>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, SV sv, S expected)
+{
+    typename S::size_type old_size = s.size();
+    typename S::const_iterator first = s.begin() + pos1;
+    typename S::const_iterator last = s.begin() + pos1 + n1;
+    typename S::size_type xlen = last - first;
+    s.replace(first, last, sv);
+    LIBCPP_ASSERT(s.__invariants());
+    assert(s == expected);
+    typename S::size_type rlen = sv.size();
+    assert(s.size() == old_size - xlen + rlen);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, SV(""), S(""));
+    test(S(""), 0, 0, SV("12345"), S("12345"));
+    test(S(""), 0, 0, SV("1234567890"), S("1234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 0, 0, SV(""), S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), S("12345abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, SV(""), S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), S("12345bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, SV(""), S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), S("12345cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, SV(""), S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), S("12345e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, SV(""), S(""));
+    test(S("abcde"), 0, 5, SV("12345"), S("12345"));
+    test(S("abcde"), 0, 5, SV("1234567890"), S("1234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 1, 0, SV(""), S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), S("a12345bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, SV(""), S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), S("a12345cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, SV(""), S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), S("a12345de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, SV(""), S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), S("a12345e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, SV(""), S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), S("a12345"));
+    test(S("abcde"), 1, 4, SV("1234567890"), S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, SV(""), S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), S("ab12345cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, SV(""), S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), S("ab12345de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, SV(""), S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), S("ab12345e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, SV(""), S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), S("ab12345"));
+    test(S("abcde"), 2, 3, SV("1234567890"), S("ab1234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, SV(""), S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), S("abcd12345e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, SV(""), S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), S("abcd12345"));
+    test(S("abcde"), 4, 1, SV("1234567890"), S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, SV(""), S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), S("abcde12345"));
+    test(S("abcde"), 5, 0, SV("1234567890"), S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 0, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV(""), S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, SV(""), S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, SV(""), S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), S("12345j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, SV(""), S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), S("12345"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, SV(""), S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), S("a12345678901234567890cdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcdefghij"), 1, 4, SV(""), S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, SV(""), S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), S("a12345j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, SV(""), S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), S("a12345"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, SV(""), S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, SV(""), S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, SV(""), S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, SV(""), S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, SV(""), S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), S("abcdefghij12345678901234567890t"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20 void test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+    test2<S, SV>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S, SV>());
+    static_assert(test1<S, SV>());
+    static_assert(test2<S, SV>());
+#endif
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+    test2<S, SV>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S, SV>());
+    static_assert(test1<S, SV>());
+    static_assert(test2<S, SV>());
+#endif
+  }
+#endif
+}
+
+int main(int, char**)
+{
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_T_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_T_size_size.pass.cpp
new file mode 100644
index 0000000..b3c58b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_T_size_size.pass.cpp
@@ -0,0 +1,6149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template <class T>
+//    basic_string& replace(size_type pos1, size_type n1, const T& t,
+//                          size_type pos2, size_type n=npos); // constexpr since C++20
+//
+//  Mostly we're testing string_view here
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1,
+     SV sv, typename S::size_type pos2, typename S::size_type n2,
+     S expected)
+{
+    typedef typename S::size_type SizeT;
+    static_assert((!std::is_same<S, SV>::value), "");
+
+    // String and string_view may not always share the same size type,
+    // but both types should have the same size (ex. int vs long)
+    static_assert(sizeof(SizeT) == sizeof(typename SV::size_type), "");
+
+    const SizeT old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= sv.size())
+    {
+        s.replace(pos1, n1, sv, pos2, n2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        SizeT xlen = std::min<SizeT>(n1, old_size - pos1);
+        SizeT rlen = std::min<SizeT>(n2, sv.size() - pos2);
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos1, n1, sv, pos2, n2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > sv.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, typename S::size_type pos1, typename S::size_type n1,
+          SV sv, typename S::size_type pos2,
+          S expected)
+{
+    typedef typename S::size_type SizeT;
+    static_assert((!std::is_same<S, SV>::value), "");
+    const SizeT old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= sv.size())
+    {
+        s.replace(pos1, n1, sv, pos2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        SizeT xlen = std::min<SizeT>(n1, old_size - pos1);
+        SizeT rlen = std::min<SizeT>(S::npos, sv.size() - pos2);
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos1, n1, sv, pos2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > sv.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, SV(""), 0, 0, S(""));
+    test(S(""), 0, 0, SV(""), 0, 1, S(""));
+    test(S(""), 0, 0, SV(""), 1, 0, S("can't happen"));
+    test(S(""), 0, 0, SV("12345"), 0, 0, S(""));
+    test(S(""), 0, 0, SV("12345"), 0, 1, S("1"));
+    test(S(""), 0, 0, SV("12345"), 0, 2, S("12"));
+    test(S(""), 0, 0, SV("12345"), 0, 4, S("1234"));
+    test(S(""), 0, 0, SV("12345"), 0, 5, S("12345"));
+    test(S(""), 0, 0, SV("12345"), 0, 6, S("12345"));
+    test(S(""), 0, 0, SV("12345"), 1, 0, S(""));
+    test(S(""), 0, 0, SV("12345"), 1, 1, S("2"));
+    test(S(""), 0, 0, SV("12345"), 1, 2, S("23"));
+    test(S(""), 0, 0, SV("12345"), 1, 3, S("234"));
+    test(S(""), 0, 0, SV("12345"), 1, 4, S("2345"));
+    test(S(""), 0, 0, SV("12345"), 1, 5, S("2345"));
+    test(S(""), 0, 0, SV("12345"), 2, 0, S(""));
+    test(S(""), 0, 0, SV("12345"), 2, 1, S("3"));
+    test(S(""), 0, 0, SV("12345"), 2, 2, S("34"));
+    test(S(""), 0, 0, SV("12345"), 2, 3, S("345"));
+    test(S(""), 0, 0, SV("12345"), 2, 4, S("345"));
+    test(S(""), 0, 0, SV("12345"), 4, 0, S(""));
+    test(S(""), 0, 0, SV("12345"), 4, 1, S("5"));
+    test(S(""), 0, 0, SV("12345"), 4, 2, S("5"));
+    test(S(""), 0, 0, SV("12345"), 5, 0, S(""));
+    test(S(""), 0, 0, SV("12345"), 5, 1, S(""));
+    test(S(""), 0, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S(""), 0, 0, SV("1234567890"), 0, 0, S(""));
+    test(S(""), 0, 0, SV("1234567890"), 0, 1, S("1"));
+    test(S(""), 0, 0, SV("1234567890"), 0, 5, S("12345"));
+    test(S(""), 0, 0, SV("1234567890"), 0, 9, S("123456789"));
+    test(S(""), 0, 0, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 0, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S(""), 0, 0, SV("1234567890"), 1, 0, S(""));
+    test(S(""), 0, 0, SV("1234567890"), 1, 1, S("2"));
+    test(S(""), 0, 0, SV("1234567890"), 1, 4, S("2345"));
+    test(S(""), 0, 0, SV("1234567890"), 1, 8, S("23456789"));
+    test(S(""), 0, 0, SV("1234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 0, SV("1234567890"), 1, 10, S("234567890"));
+    test(S(""), 0, 0, SV("1234567890"), 5, 0, S(""));
+    test(S(""), 0, 0, SV("1234567890"), 5, 1, S("6"));
+    test(S(""), 0, 0, SV("1234567890"), 5, 2, S("67"));
+    test(S(""), 0, 0, SV("1234567890"), 5, 4, S("6789"));
+    test(S(""), 0, 0, SV("1234567890"), 5, 5, S("67890"));
+    test(S(""), 0, 0, SV("1234567890"), 5, 6, S("67890"));
+    test(S(""), 0, 0, SV("1234567890"), 9, 0, S(""));
+    test(S(""), 0, 0, SV("1234567890"), 9, 1, S("0"));
+    test(S(""), 0, 0, SV("1234567890"), 9, 2, S("0"));
+    test(S(""), 0, 0, SV("1234567890"), 10, 0, S(""));
+    test(S(""), 0, 0, SV("1234567890"), 10, 1, S(""));
+    test(S(""), 0, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 0, 0, S(""));
+    test(S(""), 0, 0, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 1, 0, S(""));
+    test(S(""), 0, 0, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 10, 0, S(""));
+    test(S(""), 0, 0, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 19, 0, S(""));
+    test(S(""), 0, 0, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S(""), 0, 0, SV("12345678901234567890"), 20, 0, S(""));
+    test(S(""), 0, 0, SV("12345678901234567890"), 20, 1, S(""));
+    test(S(""), 0, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S(""), 0, 1, SV(""), 0, 0, S(""));
+    test(S(""), 0, 1, SV(""), 0, 1, S(""));
+    test(S(""), 0, 1, SV(""), 1, 0, S("can't happen"));
+    test(S(""), 0, 1, SV("12345"), 0, 0, S(""));
+    test(S(""), 0, 1, SV("12345"), 0, 1, S("1"));
+    test(S(""), 0, 1, SV("12345"), 0, 2, S("12"));
+    test(S(""), 0, 1, SV("12345"), 0, 4, S("1234"));
+    test(S(""), 0, 1, SV("12345"), 0, 5, S("12345"));
+    test(S(""), 0, 1, SV("12345"), 0, 6, S("12345"));
+    test(S(""), 0, 1, SV("12345"), 1, 0, S(""));
+    test(S(""), 0, 1, SV("12345"), 1, 1, S("2"));
+    test(S(""), 0, 1, SV("12345"), 1, 2, S("23"));
+    test(S(""), 0, 1, SV("12345"), 1, 3, S("234"));
+    test(S(""), 0, 1, SV("12345"), 1, 4, S("2345"));
+    test(S(""), 0, 1, SV("12345"), 1, 5, S("2345"));
+    test(S(""), 0, 1, SV("12345"), 2, 0, S(""));
+    test(S(""), 0, 1, SV("12345"), 2, 1, S("3"));
+    test(S(""), 0, 1, SV("12345"), 2, 2, S("34"));
+    test(S(""), 0, 1, SV("12345"), 2, 3, S("345"));
+    test(S(""), 0, 1, SV("12345"), 2, 4, S("345"));
+    test(S(""), 0, 1, SV("12345"), 4, 0, S(""));
+    test(S(""), 0, 1, SV("12345"), 4, 1, S("5"));
+    test(S(""), 0, 1, SV("12345"), 4, 2, S("5"));
+    test(S(""), 0, 1, SV("12345"), 5, 0, S(""));
+    test(S(""), 0, 1, SV("12345"), 5, 1, S(""));
+    test(S(""), 0, 1, SV("12345"), 6, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S(""), 0, 1, SV("1234567890"), 0, 0, S(""));
+    test(S(""), 0, 1, SV("1234567890"), 0, 1, S("1"));
+    test(S(""), 0, 1, SV("1234567890"), 0, 5, S("12345"));
+    test(S(""), 0, 1, SV("1234567890"), 0, 9, S("123456789"));
+    test(S(""), 0, 1, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 1, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S(""), 0, 1, SV("1234567890"), 1, 0, S(""));
+    test(S(""), 0, 1, SV("1234567890"), 1, 1, S("2"));
+    test(S(""), 0, 1, SV("1234567890"), 1, 4, S("2345"));
+    test(S(""), 0, 1, SV("1234567890"), 1, 8, S("23456789"));
+    test(S(""), 0, 1, SV("1234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 1, SV("1234567890"), 1, 10, S("234567890"));
+    test(S(""), 0, 1, SV("1234567890"), 5, 0, S(""));
+    test(S(""), 0, 1, SV("1234567890"), 5, 1, S("6"));
+    test(S(""), 0, 1, SV("1234567890"), 5, 2, S("67"));
+    test(S(""), 0, 1, SV("1234567890"), 5, 4, S("6789"));
+    test(S(""), 0, 1, SV("1234567890"), 5, 5, S("67890"));
+    test(S(""), 0, 1, SV("1234567890"), 5, 6, S("67890"));
+    test(S(""), 0, 1, SV("1234567890"), 9, 0, S(""));
+    test(S(""), 0, 1, SV("1234567890"), 9, 1, S("0"));
+    test(S(""), 0, 1, SV("1234567890"), 9, 2, S("0"));
+    test(S(""), 0, 1, SV("1234567890"), 10, 0, S(""));
+    test(S(""), 0, 1, SV("1234567890"), 10, 1, S(""));
+    test(S(""), 0, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 0, 0, S(""));
+    test(S(""), 0, 1, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 1, 0, S(""));
+    test(S(""), 0, 1, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 10, 0, S(""));
+    test(S(""), 0, 1, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 19, 0, S(""));
+    test(S(""), 0, 1, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S(""), 0, 1, SV("12345678901234567890"), 20, 0, S(""));
+    test(S(""), 0, 1, SV("12345678901234567890"), 20, 1, S(""));
+    test(S(""), 0, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S(""), 1, 0, SV(""), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, SV(""), 0, 1, S("can't happen"));
+    test(S(""), 1, 0, SV(""), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 0, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 0, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 0, 4, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 0, 5, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 0, 6, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 1, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 1, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 1, 3, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 1, 4, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 1, 5, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 2, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 2, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 2, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 2, 3, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 2, 4, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 4, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 4, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 4, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 5, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 5, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 0, 1, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S(""), 1, 0, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 0, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 0, 2, S("12abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 0, 4, S("1234abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 0, 6, S("12345abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 1, 2, S("23abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 1, 3, S("234abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 1, 5, S("2345abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 2, 1, S("3abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 2, 2, S("34abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 2, 3, S("345abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 2, 4, S("345abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 4, 1, S("5abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 4, 2, S("5abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 0, 9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 0, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 1, 8, S("23456789abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 1, 10, S("234567890abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 5, 1, S("6abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 5, 2, S("67abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 5, 4, S("6789abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 5, 5, S("67890abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 5, 6, S("67890abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 9, 1, S("0abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 9, 2, S("0abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 1, 18, S("234567890123456789abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 10, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 10, 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 10, 9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 10, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 10, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 19, 1, S("0abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 19, 2, S("0abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, SV(""), 0, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV(""), 0, 1, S("bcde"));
+    test(S("abcde"), 0, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, SV("12345"), 0, 0, S("bcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 0, 1, SV("12345"), 0, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 0, 2, S("12bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 0, 4, S("1234bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 0, 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 0, 6, S("12345bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 1, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 1, 1, S("2bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 1, 2, S("23bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 1, 3, S("234bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 1, 4, S("2345bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 1, 5, S("2345bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 2, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 2, 1, S("3bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 2, 2, S("34bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 2, 3, S("345bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 2, 4, S("345bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 4, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 4, 1, S("5bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 4, 2, S("5bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 5, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 5, 1, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 0, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 0, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 0, 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 0, 9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 0, 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 0, 11, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 1, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 1, 1, S("2bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 1, 4, S("2345bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 1, 8, S("23456789bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 1, 9, S("234567890bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 1, 10, S("234567890bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 5, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 5, 1, S("6bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 5, 2, S("67bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 5, 4, S("6789bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 5, 5, S("67890bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 5, 6, S("67890bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 9, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 9, 1, S("0bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 9, 2, S("0bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 10, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 10, 1, S("bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 0, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 0, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 0, 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 0, 19, S("1234567890123456789bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 0, 20, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 0, 21, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 1, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 1, 1, S("2bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 1, 9, S("234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 1, 18, S("234567890123456789bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 1, 19, S("2345678901234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 1, 20, S("2345678901234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 10, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 10, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 10, 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 10, 9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 10, 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 10, 11, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 19, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 19, 1, S("0bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 19, 2, S("0bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 20, 0, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 20, 1, S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, SV(""), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV(""), 0, 1, S("cde"));
+    test(S("abcde"), 0, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, SV("12345"), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 0, 1, S("1cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 0, 2, S("12cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 0, 4, S("1234cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 0, 5, S("12345cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 0, 6, S("12345cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 1, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 1, 1, S("2cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 1, 2, S("23cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 1, 3, S("234cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 1, 4, S("2345cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 1, 5, S("2345cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 2, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 2, 1, S("3cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 2, 2, S("34cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 2, 3, S("345cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 2, 4, S("345cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 4, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 4, 1, S("5cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 4, 2, S("5cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 5, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 5, 1, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 0, 1, S("1cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 0, 5, S("12345cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 0, 9, S("123456789cde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 0, 2, SV("1234567890"), 0, 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 0, 11, S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 1, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 1, 1, S("2cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 1, 4, S("2345cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 1, 8, S("23456789cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 1, 9, S("234567890cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 1, 10, S("234567890cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 5, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 5, 1, S("6cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 5, 2, S("67cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 5, 4, S("6789cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 5, 5, S("67890cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 5, 6, S("67890cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 9, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 9, 1, S("0cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 9, 2, S("0cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 10, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 10, 1, S("cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 0, 1, S("1cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 0, 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 0, 19, S("1234567890123456789cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 0, 20, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 0, 21, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 1, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 1, 1, S("2cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 1, 9, S("234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 1, 18, S("234567890123456789cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 1, 19, S("2345678901234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 1, 20, S("2345678901234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 10, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 10, 1, S("1cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 10, 5, S("12345cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 10, 9, S("123456789cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 10, 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 10, 11, S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 19, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 19, 1, S("0cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 19, 2, S("0cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 20, 0, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 20, 1, S("cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, SV(""), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, SV(""), 0, 1, S("e"));
+    test(S("abcde"), 0, 4, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, SV("12345"), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), 0, 1, S("1e"));
+    test(S("abcde"), 0, 4, SV("12345"), 0, 2, S("12e"));
+    test(S("abcde"), 0, 4, SV("12345"), 0, 4, S("1234e"));
+    test(S("abcde"), 0, 4, SV("12345"), 0, 5, S("12345e"));
+    test(S("abcde"), 0, 4, SV("12345"), 0, 6, S("12345e"));
+    test(S("abcde"), 0, 4, SV("12345"), 1, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), 1, 1, S("2e"));
+    test(S("abcde"), 0, 4, SV("12345"), 1, 2, S("23e"));
+    test(S("abcde"), 0, 4, SV("12345"), 1, 3, S("234e"));
+    test(S("abcde"), 0, 4, SV("12345"), 1, 4, S("2345e"));
+    test(S("abcde"), 0, 4, SV("12345"), 1, 5, S("2345e"));
+    test(S("abcde"), 0, 4, SV("12345"), 2, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), 2, 1, S("3e"));
+    test(S("abcde"), 0, 4, SV("12345"), 2, 2, S("34e"));
+    test(S("abcde"), 0, 4, SV("12345"), 2, 3, S("345e"));
+    test(S("abcde"), 0, 4, SV("12345"), 2, 4, S("345e"));
+    test(S("abcde"), 0, 4, SV("12345"), 4, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), 4, 1, S("5e"));
+    test(S("abcde"), 0, 4, SV("12345"), 4, 2, S("5e"));
+    test(S("abcde"), 0, 4, SV("12345"), 5, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), 5, 1, S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 0, 1, S("1e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 0, 5, S("12345e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 0, 9, S("123456789e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 0, 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 0, 11, S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 1, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 1, 1, S("2e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 1, 4, S("2345e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 1, 8, S("23456789e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 1, 9, S("234567890e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 1, 10, S("234567890e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 5, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 5, 1, S("6e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 5, 2, S("67e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 5, 4, S("6789e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 5, 5, S("67890e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 5, 6, S("67890e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 9, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 9, 1, S("0e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 9, 2, S("0e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 10, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 10, 1, S("e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 0, 1, S("1e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 0, 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 0, 19, S("1234567890123456789e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 0, 20, S("12345678901234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 0, 21, S("12345678901234567890e"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 1, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 1, 1, S("2e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 1, 9, S("234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 1, 18, S("234567890123456789e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 1, 19, S("2345678901234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 1, 20, S("2345678901234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 10, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 10, 1, S("1e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 10, 5, S("12345e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 10, 9, S("123456789e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 10, 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 10, 11, S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 19, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 19, 1, S("0e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 19, 2, S("0e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 20, 0, S("e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 20, 1, S("e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, SV(""), 0, 0, S(""));
+    test(S("abcde"), 0, 5, SV(""), 0, 1, S(""));
+    test(S("abcde"), 0, 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, SV("12345"), 0, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345"), 0, 1, S("1"));
+    test(S("abcde"), 0, 5, SV("12345"), 0, 2, S("12"));
+    test(S("abcde"), 0, 5, SV("12345"), 0, 4, S("1234"));
+    test(S("abcde"), 0, 5, SV("12345"), 0, 5, S("12345"));
+    test(S("abcde"), 0, 5, SV("12345"), 0, 6, S("12345"));
+    test(S("abcde"), 0, 5, SV("12345"), 1, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345"), 1, 1, S("2"));
+    test(S("abcde"), 0, 5, SV("12345"), 1, 2, S("23"));
+    test(S("abcde"), 0, 5, SV("12345"), 1, 3, S("234"));
+    test(S("abcde"), 0, 5, SV("12345"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 5, SV("12345"), 1, 5, S("2345"));
+    test(S("abcde"), 0, 5, SV("12345"), 2, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345"), 2, 1, S("3"));
+    test(S("abcde"), 0, 5, SV("12345"), 2, 2, S("34"));
+    test(S("abcde"), 0, 5, SV("12345"), 2, 3, S("345"));
+    test(S("abcde"), 0, 5, SV("12345"), 2, 4, S("345"));
+    test(S("abcde"), 0, 5, SV("12345"), 4, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345"), 4, 1, S("5"));
+    test(S("abcde"), 0, 5, SV("12345"), 4, 2, S("5"));
+    test(S("abcde"), 0, 5, SV("12345"), 5, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345"), 5, 1, S(""));
+    test(S("abcde"), 0, 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 5, SV("1234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 0, 5, S("12345"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 0, 9, S("123456789"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 5, SV("1234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 1, 8, S("23456789"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 1, 10, S("234567890"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 5, 0, S(""));
+    test(S("abcde"), 0, 5, SV("1234567890"), 5, 1, S("6"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 5, 2, S("67"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 5, 4, S("6789"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 5, 5, S("67890"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 5, 6, S("67890"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 9, 0, S(""));
+    test(S("abcde"), 0, 5, SV("1234567890"), 9, 1, S("0"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 9, 2, S("0"));
+    test(S("abcde"), 0, 5, SV("1234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 5, SV("1234567890"), 10, 1, S(""));
+    test(S("abcde"), 0, 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 19, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 20, 0, S(""));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 20, 1, S(""));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, SV(""), 0, 0, S(""));
+    test(S("abcde"), 0, 6, SV(""), 0, 1, S(""));
+    test(S("abcde"), 0, 6, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, SV("12345"), 0, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345"), 0, 1, S("1"));
+    test(S("abcde"), 0, 6, SV("12345"), 0, 2, S("12"));
+    test(S("abcde"), 0, 6, SV("12345"), 0, 4, S("1234"));
+    test(S("abcde"), 0, 6, SV("12345"), 0, 5, S("12345"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcde"), 0, 6, SV("12345"), 0, 6, S("12345"));
+    test(S("abcde"), 0, 6, SV("12345"), 1, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345"), 1, 1, S("2"));
+    test(S("abcde"), 0, 6, SV("12345"), 1, 2, S("23"));
+    test(S("abcde"), 0, 6, SV("12345"), 1, 3, S("234"));
+    test(S("abcde"), 0, 6, SV("12345"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 6, SV("12345"), 1, 5, S("2345"));
+    test(S("abcde"), 0, 6, SV("12345"), 2, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345"), 2, 1, S("3"));
+    test(S("abcde"), 0, 6, SV("12345"), 2, 2, S("34"));
+    test(S("abcde"), 0, 6, SV("12345"), 2, 3, S("345"));
+    test(S("abcde"), 0, 6, SV("12345"), 2, 4, S("345"));
+    test(S("abcde"), 0, 6, SV("12345"), 4, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345"), 4, 1, S("5"));
+    test(S("abcde"), 0, 6, SV("12345"), 4, 2, S("5"));
+    test(S("abcde"), 0, 6, SV("12345"), 5, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345"), 5, 1, S(""));
+    test(S("abcde"), 0, 6, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 6, SV("1234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 0, 5, S("12345"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 0, 9, S("123456789"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 6, SV("1234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 1, 8, S("23456789"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 1, 10, S("234567890"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 5, 0, S(""));
+    test(S("abcde"), 0, 6, SV("1234567890"), 5, 1, S("6"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 5, 2, S("67"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 5, 4, S("6789"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 5, 5, S("67890"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 5, 6, S("67890"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 9, 0, S(""));
+    test(S("abcde"), 0, 6, SV("1234567890"), 9, 1, S("0"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 9, 2, S("0"));
+    test(S("abcde"), 0, 6, SV("1234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 6, SV("1234567890"), 10, 1, S(""));
+    test(S("abcde"), 0, 6, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 19, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 20, 0, S(""));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 20, 1, S(""));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 1, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 0, 2, S("a12bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 0, 4, S("a1234bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 0, 6, S("a12345bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 1, 2, S("a23bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 1, 3, S("a234bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 1, 5, S("a2345bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 2, 1, S("a3bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 2, 2, S("a34bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 2, 3, S("a345bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 2, 4, S("a345bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 4, 1, S("a5bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 4, 2, S("a5bcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 0, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 0, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 1, 1, S("a2bcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcde"), 1, 0, SV("1234567890"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 1, 8, S("a23456789bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 1, 10, S("a234567890bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 5, 1, S("a6bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 5, 2, S("a67bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 5, 4, S("a6789bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 5, 5, S("a67890bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 5, 6, S("a67890bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 9, 1, S("a0bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 9, 2, S("a0bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 0, 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 0, 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 0, 21, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 1, 18, S("a234567890123456789bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 1, 19, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 1, 20, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 10, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 10, 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 10, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 10, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 10, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 19, 1, S("a0bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 19, 2, S("a0bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, SV(""), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV(""), 0, 1, S("acde"));
+    test(S("abcde"), 1, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, SV("12345"), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), 0, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 0, 2, S("a12cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 0, 4, S("a1234cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 0, 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 0, 6, S("a12345cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 1, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), 1, 1, S("a2cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 1, 2, S("a23cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 1, 3, S("a234cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 1, 4, S("a2345cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 1, 5, S("a2345cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 2, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), 2, 1, S("a3cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 2, 2, S("a34cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 2, 3, S("a345cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 2, 4, S("a345cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 4, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), 4, 1, S("a5cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 4, 2, S("a5cde"));
+    test(S("abcde"), 1, 1, SV("12345"), 5, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), 5, 1, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 0, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 0, 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 0, 9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 0, 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 0, 11, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 1, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 1, 1, S("a2cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 1, 4, S("a2345cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 1, 8, S("a23456789cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 1, 9, S("a234567890cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 1, 10, S("a234567890cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 5, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 5, 1, S("a6cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 5, 2, S("a67cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 5, 4, S("a6789cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 5, 5, S("a67890cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 5, 6, S("a67890cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 9, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 9, 1, S("a0cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 9, 2, S("a0cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 10, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 10, 1, S("acde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 0, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 0, 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 0, 19, S("a1234567890123456789cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 0, 20, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 0, 21, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 1, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 1, 1, S("a2cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 1, 9, S("a234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 1, 18, S("a234567890123456789cde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 1, 19, S("a2345678901234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 1, 20, S("a2345678901234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 10, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 10, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 10, 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 10, 9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 10, 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 10, 11, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 19, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 19, 1, S("a0cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 19, 2, S("a0cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 20, 0, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 20, 1, S("acde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, SV(""), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV(""), 0, 1, S("ade"));
+    test(S("abcde"), 1, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, SV("12345"), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), 0, 1, S("a1de"));
+    test(S("abcde"), 1, 2, SV("12345"), 0, 2, S("a12de"));
+    test(S("abcde"), 1, 2, SV("12345"), 0, 4, S("a1234de"));
+    test(S("abcde"), 1, 2, SV("12345"), 0, 5, S("a12345de"));
+    test(S("abcde"), 1, 2, SV("12345"), 0, 6, S("a12345de"));
+    test(S("abcde"), 1, 2, SV("12345"), 1, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), 1, 1, S("a2de"));
+    test(S("abcde"), 1, 2, SV("12345"), 1, 2, S("a23de"));
+    test(S("abcde"), 1, 2, SV("12345"), 1, 3, S("a234de"));
+    test(S("abcde"), 1, 2, SV("12345"), 1, 4, S("a2345de"));
+    test(S("abcde"), 1, 2, SV("12345"), 1, 5, S("a2345de"));
+    test(S("abcde"), 1, 2, SV("12345"), 2, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), 2, 1, S("a3de"));
+    test(S("abcde"), 1, 2, SV("12345"), 2, 2, S("a34de"));
+    test(S("abcde"), 1, 2, SV("12345"), 2, 3, S("a345de"));
+    test(S("abcde"), 1, 2, SV("12345"), 2, 4, S("a345de"));
+    test(S("abcde"), 1, 2, SV("12345"), 4, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), 4, 1, S("a5de"));
+    test(S("abcde"), 1, 2, SV("12345"), 4, 2, S("a5de"));
+    test(S("abcde"), 1, 2, SV("12345"), 5, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), 5, 1, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 0, 1, S("a1de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 0, 5, S("a12345de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 0, 9, S("a123456789de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 0, 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 0, 11, S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 1, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 1, 1, S("a2de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 1, 4, S("a2345de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 1, 8, S("a23456789de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 1, 9, S("a234567890de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 1, 10, S("a234567890de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 5, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 5, 1, S("a6de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 5, 2, S("a67de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 5, 4, S("a6789de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 5, 5, S("a67890de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 5, 6, S("a67890de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 9, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 9, 1, S("a0de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 9, 2, S("a0de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 10, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 10, 1, S("ade"));
+    test(S("abcde"), 1, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 0, 1, S("a1de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 0, 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 0, 19, S("a1234567890123456789de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 0, 20, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 0, 21, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 1, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 1, 1, S("a2de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 1, 9, S("a234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 1, 18, S("a234567890123456789de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 1, 19, S("a2345678901234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 1, 20, S("a2345678901234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 10, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 10, 1, S("a1de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 10, 5, S("a12345de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 10, 9, S("a123456789de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 10, 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 10, 11, S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 19, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 19, 1, S("a0de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 19, 2, S("a0de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 20, 0, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 20, 1, S("ade"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, SV(""), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV(""), 0, 1, S("ae"));
+    test(S("abcde"), 1, 3, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, SV("12345"), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), 0, 1, S("a1e"));
+    test(S("abcde"), 1, 3, SV("12345"), 0, 2, S("a12e"));
+    test(S("abcde"), 1, 3, SV("12345"), 0, 4, S("a1234e"));
+    test(S("abcde"), 1, 3, SV("12345"), 0, 5, S("a12345e"));
+    test(S("abcde"), 1, 3, SV("12345"), 0, 6, S("a12345e"));
+    test(S("abcde"), 1, 3, SV("12345"), 1, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), 1, 1, S("a2e"));
+    test(S("abcde"), 1, 3, SV("12345"), 1, 2, S("a23e"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcde"), 1, 3, SV("12345"), 1, 3, S("a234e"));
+    test(S("abcde"), 1, 3, SV("12345"), 1, 4, S("a2345e"));
+    test(S("abcde"), 1, 3, SV("12345"), 1, 5, S("a2345e"));
+    test(S("abcde"), 1, 3, SV("12345"), 2, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), 2, 1, S("a3e"));
+    test(S("abcde"), 1, 3, SV("12345"), 2, 2, S("a34e"));
+    test(S("abcde"), 1, 3, SV("12345"), 2, 3, S("a345e"));
+    test(S("abcde"), 1, 3, SV("12345"), 2, 4, S("a345e"));
+    test(S("abcde"), 1, 3, SV("12345"), 4, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), 4, 1, S("a5e"));
+    test(S("abcde"), 1, 3, SV("12345"), 4, 2, S("a5e"));
+    test(S("abcde"), 1, 3, SV("12345"), 5, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), 5, 1, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 0, 1, S("a1e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 0, 5, S("a12345e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 0, 9, S("a123456789e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 0, 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 0, 11, S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 1, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 1, 1, S("a2e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 1, 4, S("a2345e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 1, 8, S("a23456789e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 1, 9, S("a234567890e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 1, 10, S("a234567890e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 5, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 5, 1, S("a6e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 5, 2, S("a67e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 5, 4, S("a6789e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 5, 5, S("a67890e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 5, 6, S("a67890e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 9, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 9, 1, S("a0e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 9, 2, S("a0e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 10, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 10, 1, S("ae"));
+    test(S("abcde"), 1, 3, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 0, 1, S("a1e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 0, 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 0, 19, S("a1234567890123456789e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 0, 20, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 0, 21, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 1, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 1, 1, S("a2e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 1, 9, S("a234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 1, 18, S("a234567890123456789e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 1, 19, S("a2345678901234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 1, 20, S("a2345678901234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 10, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 10, 1, S("a1e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 10, 5, S("a12345e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 10, 9, S("a123456789e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 10, 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 10, 11, S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 19, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 19, 1, S("a0e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 19, 2, S("a0e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 20, 0, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 20, 1, S("ae"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, SV(""), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, SV(""), 0, 1, S("a"));
+    test(S("abcde"), 1, 4, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, SV("12345"), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 4, SV("12345"), 0, 2, S("a12"));
+    test(S("abcde"), 1, 4, SV("12345"), 0, 4, S("a1234"));
+    test(S("abcde"), 1, 4, SV("12345"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 4, SV("12345"), 0, 6, S("a12345"));
+    test(S("abcde"), 1, 4, SV("12345"), 1, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 4, SV("12345"), 1, 2, S("a23"));
+    test(S("abcde"), 1, 4, SV("12345"), 1, 3, S("a234"));
+    test(S("abcde"), 1, 4, SV("12345"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 4, SV("12345"), 1, 5, S("a2345"));
+    test(S("abcde"), 1, 4, SV("12345"), 2, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), 2, 1, S("a3"));
+    test(S("abcde"), 1, 4, SV("12345"), 2, 2, S("a34"));
+    test(S("abcde"), 1, 4, SV("12345"), 2, 3, S("a345"));
+    test(S("abcde"), 1, 4, SV("12345"), 2, 4, S("a345"));
+    test(S("abcde"), 1, 4, SV("12345"), 4, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), 4, 1, S("a5"));
+    test(S("abcde"), 1, 4, SV("12345"), 4, 2, S("a5"));
+    test(S("abcde"), 1, 4, SV("12345"), 5, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), 5, 1, S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 1, 10, S("a234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcde"), 1, 4, SV("1234567890"), 5, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 5, 1, S("a6"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 5, 2, S("a67"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 5, 4, S("a6789"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 5, 5, S("a67890"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 5, 6, S("a67890"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 9, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 9, 1, S("a0"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 9, 2, S("a0"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 10, 1, S("a"));
+    test(S("abcde"), 1, 4, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, SV(""), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, SV(""), 0, 1, S("a"));
+    test(S("abcde"), 1, 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, SV("12345"), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 5, SV("12345"), 0, 2, S("a12"));
+    test(S("abcde"), 1, 5, SV("12345"), 0, 4, S("a1234"));
+    test(S("abcde"), 1, 5, SV("12345"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 5, SV("12345"), 0, 6, S("a12345"));
+    test(S("abcde"), 1, 5, SV("12345"), 1, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 5, SV("12345"), 1, 2, S("a23"));
+    test(S("abcde"), 1, 5, SV("12345"), 1, 3, S("a234"));
+    test(S("abcde"), 1, 5, SV("12345"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 5, SV("12345"), 1, 5, S("a2345"));
+    test(S("abcde"), 1, 5, SV("12345"), 2, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), 2, 1, S("a3"));
+    test(S("abcde"), 1, 5, SV("12345"), 2, 2, S("a34"));
+    test(S("abcde"), 1, 5, SV("12345"), 2, 3, S("a345"));
+    test(S("abcde"), 1, 5, SV("12345"), 2, 4, S("a345"));
+    test(S("abcde"), 1, 5, SV("12345"), 4, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), 4, 1, S("a5"));
+    test(S("abcde"), 1, 5, SV("12345"), 4, 2, S("a5"));
+    test(S("abcde"), 1, 5, SV("12345"), 5, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), 5, 1, S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 5, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 5, 1, S("a6"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 5, 2, S("a67"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 5, 4, S("a6789"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 5, 5, S("a67890"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 5, 6, S("a67890"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 9, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 9, 1, S("a0"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 9, 2, S("a0"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 10, 1, S("a"));
+    test(S("abcde"), 1, 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 10, 1, S("a1"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 2, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 0, 2, S("ab12cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 0, 4, S("ab1234cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 0, 6, S("ab12345cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 1, 2, S("ab23cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 1, 3, S("ab234cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 1, 5, S("ab2345cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), 2, 1, S("ab3cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 2, 2, S("ab34cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 2, 3, S("ab345cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 2, 4, S("ab345cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), 4, 1, S("ab5cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 4, 2, S("ab5cde"));
+    test(S("abcde"), 2, 0, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 0, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 0, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 1, 8, S("ab23456789cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 1, 10, S("ab234567890cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 5, 1, S("ab6cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 5, 2, S("ab67cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 5, 4, S("ab6789cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 5, 5, S("ab67890cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 5, 6, S("ab67890cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 9, 1, S("ab0cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 9, 2, S("ab0cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 0, 19, S("ab1234567890123456789cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 0, 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 0, 21, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 1, 18, S("ab234567890123456789cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 1, 19, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 1, 20, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 10, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 10, 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 10, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 10, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 10, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 19, 1, S("ab0cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 19, 2, S("ab0cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, SV(""), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV(""), 0, 1, S("abde"));
+    test(S("abcde"), 2, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, SV("12345"), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), 0, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, SV("12345"), 0, 2, S("ab12de"));
+    test(S("abcde"), 2, 1, SV("12345"), 0, 4, S("ab1234de"));
+    test(S("abcde"), 2, 1, SV("12345"), 0, 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, SV("12345"), 0, 6, S("ab12345de"));
+    test(S("abcde"), 2, 1, SV("12345"), 1, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), 1, 1, S("ab2de"));
+    test(S("abcde"), 2, 1, SV("12345"), 1, 2, S("ab23de"));
+    test(S("abcde"), 2, 1, SV("12345"), 1, 3, S("ab234de"));
+    test(S("abcde"), 2, 1, SV("12345"), 1, 4, S("ab2345de"));
+    test(S("abcde"), 2, 1, SV("12345"), 1, 5, S("ab2345de"));
+    test(S("abcde"), 2, 1, SV("12345"), 2, 0, S("abde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test12()
+{
+    test(S("abcde"), 2, 1, SV("12345"), 2, 1, S("ab3de"));
+    test(S("abcde"), 2, 1, SV("12345"), 2, 2, S("ab34de"));
+    test(S("abcde"), 2, 1, SV("12345"), 2, 3, S("ab345de"));
+    test(S("abcde"), 2, 1, SV("12345"), 2, 4, S("ab345de"));
+    test(S("abcde"), 2, 1, SV("12345"), 4, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), 4, 1, S("ab5de"));
+    test(S("abcde"), 2, 1, SV("12345"), 4, 2, S("ab5de"));
+    test(S("abcde"), 2, 1, SV("12345"), 5, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), 5, 1, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 0, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 0, 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 0, 9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 0, 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 0, 11, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 1, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 1, 1, S("ab2de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 1, 4, S("ab2345de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 1, 8, S("ab23456789de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 1, 9, S("ab234567890de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 1, 10, S("ab234567890de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 5, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 5, 1, S("ab6de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 5, 2, S("ab67de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 5, 4, S("ab6789de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 5, 5, S("ab67890de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 5, 6, S("ab67890de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 9, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 9, 1, S("ab0de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 9, 2, S("ab0de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 10, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 10, 1, S("abde"));
+    test(S("abcde"), 2, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 0, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 0, 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 0, 19, S("ab1234567890123456789de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 0, 20, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 0, 21, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 1, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 1, 1, S("ab2de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 1, 9, S("ab234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 1, 18, S("ab234567890123456789de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 1, 19, S("ab2345678901234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 1, 20, S("ab2345678901234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 10, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 10, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 10, 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 10, 9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 10, 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 10, 11, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 19, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 19, 1, S("ab0de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 19, 2, S("ab0de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 20, 0, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 20, 1, S("abde"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, SV(""), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV(""), 0, 1, S("abe"));
+    test(S("abcde"), 2, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, SV("12345"), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), 0, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, SV("12345"), 0, 2, S("ab12e"));
+    test(S("abcde"), 2, 2, SV("12345"), 0, 4, S("ab1234e"));
+    test(S("abcde"), 2, 2, SV("12345"), 0, 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, SV("12345"), 0, 6, S("ab12345e"));
+    test(S("abcde"), 2, 2, SV("12345"), 1, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), 1, 1, S("ab2e"));
+    test(S("abcde"), 2, 2, SV("12345"), 1, 2, S("ab23e"));
+    test(S("abcde"), 2, 2, SV("12345"), 1, 3, S("ab234e"));
+    test(S("abcde"), 2, 2, SV("12345"), 1, 4, S("ab2345e"));
+    test(S("abcde"), 2, 2, SV("12345"), 1, 5, S("ab2345e"));
+    test(S("abcde"), 2, 2, SV("12345"), 2, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), 2, 1, S("ab3e"));
+    test(S("abcde"), 2, 2, SV("12345"), 2, 2, S("ab34e"));
+    test(S("abcde"), 2, 2, SV("12345"), 2, 3, S("ab345e"));
+    test(S("abcde"), 2, 2, SV("12345"), 2, 4, S("ab345e"));
+    test(S("abcde"), 2, 2, SV("12345"), 4, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), 4, 1, S("ab5e"));
+    test(S("abcde"), 2, 2, SV("12345"), 4, 2, S("ab5e"));
+    test(S("abcde"), 2, 2, SV("12345"), 5, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), 5, 1, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 0, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 0, 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 0, 9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 0, 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 0, 11, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 1, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 1, 1, S("ab2e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 1, 4, S("ab2345e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 1, 8, S("ab23456789e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 1, 9, S("ab234567890e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 1, 10, S("ab234567890e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 5, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 5, 1, S("ab6e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 5, 2, S("ab67e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 5, 4, S("ab6789e"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test13()
+{
+    test(S("abcde"), 2, 2, SV("1234567890"), 5, 5, S("ab67890e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 5, 6, S("ab67890e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 9, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 9, 1, S("ab0e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 9, 2, S("ab0e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 10, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 10, 1, S("abe"));
+    test(S("abcde"), 2, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 0, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 0, 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 0, 19, S("ab1234567890123456789e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 0, 20, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 0, 21, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 1, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 1, 1, S("ab2e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 1, 9, S("ab234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 1, 18, S("ab234567890123456789e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 1, 19, S("ab2345678901234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 1, 20, S("ab2345678901234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 10, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 10, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 10, 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 10, 9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 10, 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 10, 11, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 19, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 19, 1, S("ab0e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 19, 2, S("ab0e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 20, 0, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 20, 1, S("abe"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, SV(""), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV(""), 0, 1, S("ab"));
+    test(S("abcde"), 2, 3, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, SV("12345"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 3, SV("12345"), 0, 2, S("ab12"));
+    test(S("abcde"), 2, 3, SV("12345"), 0, 4, S("ab1234"));
+    test(S("abcde"), 2, 3, SV("12345"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 3, SV("12345"), 0, 6, S("ab12345"));
+    test(S("abcde"), 2, 3, SV("12345"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 3, SV("12345"), 1, 2, S("ab23"));
+    test(S("abcde"), 2, 3, SV("12345"), 1, 3, S("ab234"));
+    test(S("abcde"), 2, 3, SV("12345"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 3, SV("12345"), 1, 5, S("ab2345"));
+    test(S("abcde"), 2, 3, SV("12345"), 2, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), 2, 1, S("ab3"));
+    test(S("abcde"), 2, 3, SV("12345"), 2, 2, S("ab34"));
+    test(S("abcde"), 2, 3, SV("12345"), 2, 3, S("ab345"));
+    test(S("abcde"), 2, 3, SV("12345"), 2, 4, S("ab345"));
+    test(S("abcde"), 2, 3, SV("12345"), 4, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), 4, 1, S("ab5"));
+    test(S("abcde"), 2, 3, SV("12345"), 4, 2, S("ab5"));
+    test(S("abcde"), 2, 3, SV("12345"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), 5, 1, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 0, 9, S("ab123456789"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 0, 11, S("ab1234567890"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 1, 8, S("ab23456789"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 1, 10, S("ab234567890"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 5, 1, S("ab6"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 5, 2, S("ab67"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 5, 4, S("ab6789"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 5, 5, S("ab67890"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 5, 6, S("ab67890"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 9, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 9, 1, S("ab0"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 9, 2, S("ab0"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 10, 1, S("ab"));
+    test(S("abcde"), 2, 3, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 0, 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 0, 20, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 0, 21, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 1, 18, S("ab234567890123456789"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 1, 19, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 1, 20, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 10, 1, S("ab1"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 10, 5, S("ab12345"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 10, 9, S("ab123456789"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 10, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 10, 11, S("ab1234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test14()
+{
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 19, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 19, 1, S("ab0"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 19, 2, S("ab0"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 20, 0, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 20, 1, S("ab"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, SV(""), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV(""), 0, 1, S("ab"));
+    test(S("abcde"), 2, 4, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, SV("12345"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 4, SV("12345"), 0, 2, S("ab12"));
+    test(S("abcde"), 2, 4, SV("12345"), 0, 4, S("ab1234"));
+    test(S("abcde"), 2, 4, SV("12345"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 4, SV("12345"), 0, 6, S("ab12345"));
+    test(S("abcde"), 2, 4, SV("12345"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 4, SV("12345"), 1, 2, S("ab23"));
+    test(S("abcde"), 2, 4, SV("12345"), 1, 3, S("ab234"));
+    test(S("abcde"), 2, 4, SV("12345"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 4, SV("12345"), 1, 5, S("ab2345"));
+    test(S("abcde"), 2, 4, SV("12345"), 2, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), 2, 1, S("ab3"));
+    test(S("abcde"), 2, 4, SV("12345"), 2, 2, S("ab34"));
+    test(S("abcde"), 2, 4, SV("12345"), 2, 3, S("ab345"));
+    test(S("abcde"), 2, 4, SV("12345"), 2, 4, S("ab345"));
+    test(S("abcde"), 2, 4, SV("12345"), 4, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), 4, 1, S("ab5"));
+    test(S("abcde"), 2, 4, SV("12345"), 4, 2, S("ab5"));
+    test(S("abcde"), 2, 4, SV("12345"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), 5, 1, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 0, 9, S("ab123456789"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 0, 11, S("ab1234567890"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 1, 8, S("ab23456789"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 1, 10, S("ab234567890"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 5, 1, S("ab6"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 5, 2, S("ab67"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 5, 4, S("ab6789"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 5, 5, S("ab67890"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 5, 6, S("ab67890"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 9, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 9, 1, S("ab0"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 9, 2, S("ab0"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 10, 1, S("ab"));
+    test(S("abcde"), 2, 4, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 0, 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 0, 20, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 0, 21, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 1, 18, S("ab234567890123456789"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 1, 19, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 1, 20, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 10, 1, S("ab1"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 10, 5, S("ab12345"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 10, 9, S("ab123456789"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 10, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 10, 11, S("ab1234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 19, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 19, 1, S("ab0"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 19, 2, S("ab0"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 20, 0, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 20, 1, S("ab"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 4, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, SV("12345"), 0, 2, S("abcd12e"));
+    test(S("abcde"), 4, 0, SV("12345"), 0, 4, S("abcd1234e"));
+    test(S("abcde"), 4, 0, SV("12345"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, SV("12345"), 0, 6, S("abcd12345e"));
+    test(S("abcde"), 4, 0, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, 0, SV("12345"), 1, 2, S("abcd23e"));
+    test(S("abcde"), 4, 0, SV("12345"), 1, 3, S("abcd234e"));
+    test(S("abcde"), 4, 0, SV("12345"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, 0, SV("12345"), 1, 5, S("abcd2345e"));
+    test(S("abcde"), 4, 0, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), 2, 1, S("abcd3e"));
+    test(S("abcde"), 4, 0, SV("12345"), 2, 2, S("abcd34e"));
+    test(S("abcde"), 4, 0, SV("12345"), 2, 3, S("abcd345e"));
+    test(S("abcde"), 4, 0, SV("12345"), 2, 4, S("abcd345e"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test15()
+{
+    test(S("abcde"), 4, 0, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), 4, 1, S("abcd5e"));
+    test(S("abcde"), 4, 0, SV("12345"), 4, 2, S("abcd5e"));
+    test(S("abcde"), 4, 0, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 0, 9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 0, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 1, 8, S("abcd23456789e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 1, 10, S("abcd234567890e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 5, 1, S("abcd6e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 5, 2, S("abcd67e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 5, 4, S("abcd6789e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 5, 5, S("abcd67890e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 5, 6, S("abcd67890e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 9, 1, S("abcd0e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 9, 2, S("abcd0e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 4, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 0, 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 0, 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 0, 21, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 1, 18, S("abcd234567890123456789e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 1, 19, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 1, 20, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 10, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 10, 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 10, 9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 10, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 10, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 19, 1, S("abcd0e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 19, 2, S("abcd0e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, SV(""), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV(""), 0, 1, S("abcd"));
+    test(S("abcde"), 4, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, SV("12345"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, SV("12345"), 0, 2, S("abcd12"));
+    test(S("abcde"), 4, 1, SV("12345"), 0, 4, S("abcd1234"));
+    test(S("abcde"), 4, 1, SV("12345"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, SV("12345"), 0, 6, S("abcd12345"));
+    test(S("abcde"), 4, 1, SV("12345"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 1, SV("12345"), 1, 2, S("abcd23"));
+    test(S("abcde"), 4, 1, SV("12345"), 1, 3, S("abcd234"));
+    test(S("abcde"), 4, 1, SV("12345"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 1, SV("12345"), 1, 5, S("abcd2345"));
+    test(S("abcde"), 4, 1, SV("12345"), 2, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), 2, 1, S("abcd3"));
+    test(S("abcde"), 4, 1, SV("12345"), 2, 2, S("abcd34"));
+    test(S("abcde"), 4, 1, SV("12345"), 2, 3, S("abcd345"));
+    test(S("abcde"), 4, 1, SV("12345"), 2, 4, S("abcd345"));
+    test(S("abcde"), 4, 1, SV("12345"), 4, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), 4, 1, S("abcd5"));
+    test(S("abcde"), 4, 1, SV("12345"), 4, 2, S("abcd5"));
+    test(S("abcde"), 4, 1, SV("12345"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), 5, 1, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 0, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 0, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 1, 8, S("abcd23456789"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 1, 10, S("abcd234567890"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 5, 1, S("abcd6"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 5, 2, S("abcd67"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 5, 4, S("abcd6789"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 5, 5, S("abcd67890"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 5, 6, S("abcd67890"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 9, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 9, 1, S("abcd0"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test16()
+{
+    test(S("abcde"), 4, 1, SV("1234567890"), 9, 2, S("abcd0"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 10, 1, S("abcd"));
+    test(S("abcde"), 4, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 0, 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 0, 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 0, 21, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 1, 18, S("abcd234567890123456789"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 1, 19, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 1, 20, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 10, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 10, 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 10, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 10, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 10, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 19, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 19, 1, S("abcd0"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 19, 2, S("abcd0"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 20, 0, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 20, 1, S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, SV(""), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV(""), 0, 1, S("abcd"));
+    test(S("abcde"), 4, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, SV("12345"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, SV("12345"), 0, 2, S("abcd12"));
+    test(S("abcde"), 4, 2, SV("12345"), 0, 4, S("abcd1234"));
+    test(S("abcde"), 4, 2, SV("12345"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, SV("12345"), 0, 6, S("abcd12345"));
+    test(S("abcde"), 4, 2, SV("12345"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 2, SV("12345"), 1, 2, S("abcd23"));
+    test(S("abcde"), 4, 2, SV("12345"), 1, 3, S("abcd234"));
+    test(S("abcde"), 4, 2, SV("12345"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 2, SV("12345"), 1, 5, S("abcd2345"));
+    test(S("abcde"), 4, 2, SV("12345"), 2, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), 2, 1, S("abcd3"));
+    test(S("abcde"), 4, 2, SV("12345"), 2, 2, S("abcd34"));
+    test(S("abcde"), 4, 2, SV("12345"), 2, 3, S("abcd345"));
+    test(S("abcde"), 4, 2, SV("12345"), 2, 4, S("abcd345"));
+    test(S("abcde"), 4, 2, SV("12345"), 4, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), 4, 1, S("abcd5"));
+    test(S("abcde"), 4, 2, SV("12345"), 4, 2, S("abcd5"));
+    test(S("abcde"), 4, 2, SV("12345"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), 5, 1, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 0, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 0, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 1, 8, S("abcd23456789"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 1, 10, S("abcd234567890"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 5, 1, S("abcd6"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 5, 2, S("abcd67"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 5, 4, S("abcd6789"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 5, 5, S("abcd67890"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 5, 6, S("abcd67890"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 9, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 9, 1, S("abcd0"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 9, 2, S("abcd0"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 10, 1, S("abcd"));
+    test(S("abcde"), 4, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 0, 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 0, 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 0, 21, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 1, 18, S("abcd234567890123456789"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 1, 19, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 1, 20, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 10, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 10, 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 10, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 10, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 10, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 19, 0, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 19, 1, S("abcd0"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 19, 2, S("abcd0"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 20, 0, S("abcd"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test17()
+{
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 20, 1, S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 5, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, SV("12345"), 0, 2, S("abcde12"));
+    test(S("abcde"), 5, 0, SV("12345"), 0, 4, S("abcde1234"));
+    test(S("abcde"), 5, 0, SV("12345"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, SV("12345"), 0, 6, S("abcde12345"));
+    test(S("abcde"), 5, 0, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 0, SV("12345"), 1, 2, S("abcde23"));
+    test(S("abcde"), 5, 0, SV("12345"), 1, 3, S("abcde234"));
+    test(S("abcde"), 5, 0, SV("12345"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 0, SV("12345"), 1, 5, S("abcde2345"));
+    test(S("abcde"), 5, 0, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), 2, 1, S("abcde3"));
+    test(S("abcde"), 5, 0, SV("12345"), 2, 2, S("abcde34"));
+    test(S("abcde"), 5, 0, SV("12345"), 2, 3, S("abcde345"));
+    test(S("abcde"), 5, 0, SV("12345"), 2, 4, S("abcde345"));
+    test(S("abcde"), 5, 0, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), 4, 1, S("abcde5"));
+    test(S("abcde"), 5, 0, SV("12345"), 4, 2, S("abcde5"));
+    test(S("abcde"), 5, 0, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 5, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, SV(""), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV(""), 0, 1, S("abcde"));
+    test(S("abcde"), 5, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, SV("12345"), 0, 2, S("abcde12"));
+    test(S("abcde"), 5, 1, SV("12345"), 0, 4, S("abcde1234"));
+    test(S("abcde"), 5, 1, SV("12345"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, SV("12345"), 0, 6, S("abcde12345"));
+    test(S("abcde"), 5, 1, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 1, SV("12345"), 1, 2, S("abcde23"));
+    test(S("abcde"), 5, 1, SV("12345"), 1, 3, S("abcde234"));
+    test(S("abcde"), 5, 1, SV("12345"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 1, SV("12345"), 1, 5, S("abcde2345"));
+    test(S("abcde"), 5, 1, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345"), 2, 1, S("abcde3"));
+    test(S("abcde"), 5, 1, SV("12345"), 2, 2, S("abcde34"));
+    test(S("abcde"), 5, 1, SV("12345"), 2, 3, S("abcde345"));
+    test(S("abcde"), 5, 1, SV("12345"), 2, 4, S("abcde345"));
+    test(S("abcde"), 5, 1, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345"), 4, 1, S("abcde5"));
+    test(S("abcde"), 5, 1, SV("12345"), 4, 2, S("abcde5"));
+    test(S("abcde"), 5, 1, SV("12345"), 5, 0, S("abcde"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test18()
+{
+    test(S("abcde"), 5, 1, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 5, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV(""), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV(""), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 0, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 0, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 0, 6, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 1, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 1, 3, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 1, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 2, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 2, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 2, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 2, 3, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 2, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 4, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 4, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 4, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), 11, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test19()
+{
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 0, 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 0, 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 0, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 0, 6, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 1, 2, S("23abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 1, 3, S("234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 1, 5, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 2, 1, S("3abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 2, 2, S("34abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 2, 3, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 2, 4, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 4, 1, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 4, 2, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 0, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 0, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 0, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 1, 8, S("23456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 1, 10, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 5, 1, S("6abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 5, 2, S("67abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 5, 4, S("6789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 5, 5, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 5, 6, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 9, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 9, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 1, 18, S("234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 10, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 10, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 10, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 10, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 10, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 19, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 19, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, SV(""), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV(""), 0, 1, S("bcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test20()
+{
+    test(S("abcdefghij"), 0, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 0, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 0, 2, S("12bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 0, 4, S("1234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 0, 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 0, 6, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 1, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 1, 1, S("2bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 1, 2, S("23bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 1, 3, S("234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 1, 4, S("2345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 1, 5, S("2345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 2, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 2, 1, S("3bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 2, 2, S("34bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 2, 3, S("345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 2, 4, S("345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 4, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 4, 1, S("5bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 4, 2, S("5bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 5, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 5, 1, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 0, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 0, 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 0, 9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 0, 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 0, 11, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 1, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 1, 1, S("2bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 1, 4, S("2345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 1, 8, S("23456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 1, 9, S("234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 1, 10, S("234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 5, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 5, 1, S("6bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 5, 2, S("67bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 5, 4, S("6789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 5, 5, S("67890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 5, 6, S("67890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 9, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 9, 1, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 9, 2, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 10, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 10, 1, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 0, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 0, 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 0, 19, S("1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 0, 20, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 0, 21, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 1, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 1, 1, S("2bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 1, 9, S("234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 1, 18, S("234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 1, 19, S("2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 1, 20, S("2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 10, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 10, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 10, 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 10, 9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 10, 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 10, 11, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 19, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 19, 1, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 19, 2, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 20, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 20, 1, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, SV(""), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV(""), 0, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 0, 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 0, 2, S("12fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 0, 4, S("1234fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 0, 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 0, 6, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 1, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 1, 1, S("2fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 1, 2, S("23fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 1, 3, S("234fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 1, 4, S("2345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 1, 5, S("2345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 2, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 2, 1, S("3fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 2, 2, S("34fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 2, 3, S("345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 2, 4, S("345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 4, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 4, 1, S("5fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 4, 2, S("5fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 5, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 5, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 0, 1, S("1fghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test21()
+{
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 0, 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 0, 9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 0, 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 0, 11, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 1, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 1, 1, S("2fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 1, 4, S("2345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 1, 8, S("23456789fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 1, 9, S("234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 1, 10, S("234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 5, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 5, 1, S("6fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 5, 2, S("67fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 5, 4, S("6789fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 5, 5, S("67890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 5, 6, S("67890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 9, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 9, 1, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 9, 2, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 10, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 10, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 0, 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 0, 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 0, 19, S("1234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 0, 20, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 0, 21, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 1, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 1, 1, S("2fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 1, 9, S("234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 1, 18, S("234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 1, 19, S("2345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 1, 20, S("2345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 10, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 10, 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 10, 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 10, 9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 10, 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 10, 11, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 19, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 19, 1, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 19, 2, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 20, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 20, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, SV(""), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV(""), 0, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 0, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 0, 2, S("12j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 0, 4, S("1234j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 0, 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 0, 6, S("12345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 1, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 1, 1, S("2j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 1, 2, S("23j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 1, 3, S("234j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 1, 4, S("2345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 1, 5, S("2345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 2, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 2, 1, S("3j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 2, 2, S("34j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 2, 3, S("345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 2, 4, S("345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 4, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 4, 1, S("5j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 4, 2, S("5j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 5, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 5, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 0, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 0, 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 0, 9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 0, 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 0, 11, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 1, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 1, 1, S("2j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 1, 4, S("2345j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 1, 8, S("23456789j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 1, 9, S("234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 1, 10, S("234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 5, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 5, 1, S("6j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 5, 2, S("67j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 5, 4, S("6789j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 5, 5, S("67890j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 5, 6, S("67890j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 9, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 9, 1, S("0j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 9, 2, S("0j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 10, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 10, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 0, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 0, 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 0, 19, S("1234567890123456789j"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test22()
+{
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 0, 20, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 0, 21, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 1, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 1, 1, S("2j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 1, 9, S("234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 1, 18, S("234567890123456789j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 1, 19, S("2345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 1, 20, S("2345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 10, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 10, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 10, 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 10, 9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 10, 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 10, 11, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 19, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 19, 1, S("0j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 19, 2, S("0j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 20, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 20, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, SV(""), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV(""), 0, 1, S(""));
+    test(S("abcdefghij"), 0, 10, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 0, 2, S("12"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 0, 4, S("1234"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 0, 6, S("12345"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 1, 2, S("23"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 1, 3, S("234"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 1, 5, S("2345"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 2, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 2, 1, S("3"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 2, 2, S("34"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 2, 3, S("345"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 2, 4, S("345"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 4, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 4, 1, S("5"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 4, 2, S("5"));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 5, 1, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 0, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 9, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 10, 1, S(""));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, SV(""), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV(""), 0, 1, S(""));
+    test(S("abcdefghij"), 0, 11, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 0, 2, S("12"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test23()
+{
+    test(S("abcdefghij"), 0, 11, SV("12345"), 0, 4, S("1234"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 0, 6, S("12345"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 1, 2, S("23"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 1, 3, S("234"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 1, 5, S("2345"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 2, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 2, 1, S("3"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 2, 2, S("34"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 2, 3, S("345"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 2, 4, S("345"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 4, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 4, 1, S("5"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 4, 2, S("5"));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 5, 1, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 0, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 9, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 10, 1, S(""));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 0, 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 0, 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 0, 6, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 1, 2, S("a23bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 1, 3, S("a234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 1, 5, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 2, 1, S("a3bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 2, 2, S("a34bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 2, 3, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 2, 4, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 4, 1, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 4, 2, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 0, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 0, 11, S("a1234567890bcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test24()
+{
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 1, 8, S("a23456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 1, 10, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 5, 1, S("a6bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 5, 2, S("a67bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 5, 4, S("a6789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 5, 5, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 5, 6, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 9, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 9, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 10, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 10, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 10, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 10, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 10, 11, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 19, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 19, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, SV(""), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV(""), 0, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 0, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 0, 2, S("a12cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 0, 4, S("a1234cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 0, 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 0, 6, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 1, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 1, 1, S("a2cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 1, 2, S("a23cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 1, 3, S("a234cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 1, 4, S("a2345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 1, 5, S("a2345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 2, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 2, 1, S("a3cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 2, 2, S("a34cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 2, 3, S("a345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 2, 4, S("a345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 4, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 4, 1, S("a5cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 4, 2, S("a5cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 5, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 5, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 0, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 0, 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 0, 9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 0, 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 0, 11, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 1, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 1, 1, S("a2cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 1, 4, S("a2345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 1, 8, S("a23456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 1, 9, S("a234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 1, 10, S("a234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 5, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 5, 1, S("a6cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 5, 2, S("a67cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 5, 4, S("a6789cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 5, 5, S("a67890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 5, 6, S("a67890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 9, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 9, 1, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 9, 2, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 10, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 10, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 0, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 0, 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 0, 19, S("a1234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 0, 20, S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 0, 21, S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 1, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 1, 1, S("a2cdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test25()
+{
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 1, 9, S("a234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 1, 18, S("a234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 1, 19, S("a2345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 1, 20, S("a2345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 10, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 10, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 10, 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 10, 9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 10, 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 10, 11, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 19, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 19, 1, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 19, 2, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 20, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 20, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, SV(""), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV(""), 0, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 0, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 0, 2, S("a12fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 0, 4, S("a1234fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 0, 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 0, 6, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 1, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 1, 1, S("a2fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 1, 2, S("a23fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 1, 3, S("a234fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 1, 4, S("a2345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 1, 5, S("a2345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 2, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 2, 1, S("a3fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 2, 2, S("a34fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 2, 3, S("a345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 2, 4, S("a345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 4, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 4, 1, S("a5fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 4, 2, S("a5fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 5, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 5, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 0, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 0, 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 0, 9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 0, 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 0, 11, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 1, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 1, 1, S("a2fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 1, 4, S("a2345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 1, 8, S("a23456789fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 1, 9, S("a234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 1, 10, S("a234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 5, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 5, 1, S("a6fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 5, 2, S("a67fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 5, 4, S("a6789fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 5, 5, S("a67890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 5, 6, S("a67890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 9, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 9, 1, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 9, 2, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 10, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 10, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 0, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 0, 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 0, 19, S("a1234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 0, 20, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 0, 21, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 1, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 1, 1, S("a2fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 1, 9, S("a234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 1, 18, S("a234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 1, 19, S("a2345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 1, 20, S("a2345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 10, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 10, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 10, 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 10, 9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 10, 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 10, 11, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 19, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 19, 1, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 19, 2, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 20, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 20, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, SV(""), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV(""), 0, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 0, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 0, 2, S("a12j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 0, 4, S("a1234j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 0, 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 0, 6, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 1, 0, S("aj"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test26()
+{
+    test(S("abcdefghij"), 1, 8, SV("12345"), 1, 1, S("a2j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 1, 2, S("a23j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 1, 3, S("a234j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 1, 4, S("a2345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 1, 5, S("a2345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 2, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 2, 1, S("a3j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 2, 2, S("a34j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 2, 3, S("a345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 2, 4, S("a345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 4, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 4, 1, S("a5j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 4, 2, S("a5j"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 5, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 5, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 0, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 0, 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 0, 9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 0, 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 0, 11, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 1, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 1, 1, S("a2j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 1, 4, S("a2345j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 1, 8, S("a23456789j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 1, 9, S("a234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 1, 10, S("a234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 5, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 5, 1, S("a6j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 5, 2, S("a67j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 5, 4, S("a6789j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 5, 5, S("a67890j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 5, 6, S("a67890j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 9, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 9, 1, S("a0j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 9, 2, S("a0j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 10, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 10, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 0, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 0, 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 0, 19, S("a1234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 0, 20, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 0, 21, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 1, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 1, 1, S("a2j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 1, 9, S("a234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 1, 18, S("a234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 1, 19, S("a2345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 1, 20, S("a2345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 10, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 10, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 10, 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 10, 9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 10, 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 10, 11, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 19, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 19, 1, S("a0j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 19, 2, S("a0j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 20, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 20, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, SV(""), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV(""), 0, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 0, 2, S("a12"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 1, 2, S("a23"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 1, 3, S("a234"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 2, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 2, 1, S("a3"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 2, 2, S("a34"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 2, 3, S("a345"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 2, 4, S("a345"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 4, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 4, 1, S("a5"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 4, 2, S("a5"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 5, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 1, 8, S("a23456789"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test27()
+{
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, SV(""), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV(""), 0, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 0, 2, S("a12"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 1, 2, S("a23"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 1, 3, S("a234"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 2, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 2, 1, S("a3"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 2, 2, S("a34"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 2, 3, S("a345"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 2, 4, S("a345"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 4, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 4, 1, S("a5"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 4, 2, S("a5"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 5, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test28()
+{
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 0, 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 0, 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 0, 6, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 1, 2, S("abcde23fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 1, 3, S("abcde234fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 1, 5, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 2, 1, S("abcde3fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 2, 2, S("abcde34fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 2, 3, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 2, 4, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 4, 1, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 4, 2, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 0, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 0, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 1, 8, S("abcde23456789fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 1, 10, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 5, 1, S("abcde6fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 5, 2, S("abcde67fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 5, 4, S("abcde6789fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 5, 5, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 5, 6, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 9, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 9, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 10, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 10, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 10, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 10, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 10, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 19, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 19, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, SV(""), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV(""), 0, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 0, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 0, 2, S("abcde12ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 0, 4, S("abcde1234ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 0, 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 0, 6, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 1, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 1, 1, S("abcde2ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 1, 2, S("abcde23ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 1, 3, S("abcde234ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 1, 4, S("abcde2345ghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test29()
+{
+    test(S("abcdefghij"), 5, 1, SV("12345"), 1, 5, S("abcde2345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 2, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 2, 1, S("abcde3ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 2, 2, S("abcde34ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 2, 3, S("abcde345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 2, 4, S("abcde345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 4, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 4, 1, S("abcde5ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 4, 2, S("abcde5ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 5, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 5, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 0, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 0, 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 0, 9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 0, 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 0, 11, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 1, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 1, 1, S("abcde2ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 1, 4, S("abcde2345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 1, 8, S("abcde23456789ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 1, 9, S("abcde234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 1, 10, S("abcde234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 5, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 5, 1, S("abcde6ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 5, 2, S("abcde67ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 5, 4, S("abcde6789ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 5, 5, S("abcde67890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 5, 6, S("abcde67890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 9, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 9, 1, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 9, 2, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 10, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 10, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 0, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 0, 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 1, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 1, 1, S("abcde2ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 1, 9, S("abcde234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 10, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 10, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 10, 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 10, 9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 10, 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 10, 11, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 19, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 19, 1, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 19, 2, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 20, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 20, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, SV(""), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV(""), 0, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 0, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 0, 2, S("abcde12hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 0, 4, S("abcde1234hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 0, 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 0, 6, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 1, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 1, 1, S("abcde2hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 1, 2, S("abcde23hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 1, 3, S("abcde234hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 1, 4, S("abcde2345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 1, 5, S("abcde2345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 2, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 2, 1, S("abcde3hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 2, 2, S("abcde34hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 2, 3, S("abcde345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 2, 4, S("abcde345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 4, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 4, 1, S("abcde5hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 4, 2, S("abcde5hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 5, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 5, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 0, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 0, 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 0, 9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 0, 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 0, 11, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 1, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 1, 1, S("abcde2hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 1, 4, S("abcde2345hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 1, 8, S("abcde23456789hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 1, 9, S("abcde234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 1, 10, S("abcde234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 5, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 5, 1, S("abcde6hij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test30()
+{
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 5, 2, S("abcde67hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 5, 4, S("abcde6789hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 5, 5, S("abcde67890hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 5, 6, S("abcde67890hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 9, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 9, 1, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 9, 2, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 10, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 10, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 0, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 0, 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 1, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 1, 1, S("abcde2hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 1, 9, S("abcde234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 10, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 10, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 10, 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 10, 9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 10, 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 10, 11, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 19, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 19, 1, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 19, 2, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 20, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 20, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, SV(""), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV(""), 0, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 0, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 0, 2, S("abcde12j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 0, 4, S("abcde1234j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 0, 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 0, 6, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 1, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 1, 1, S("abcde2j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 1, 2, S("abcde23j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 1, 3, S("abcde234j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 1, 4, S("abcde2345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 1, 5, S("abcde2345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 2, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 2, 1, S("abcde3j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 2, 2, S("abcde34j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 2, 3, S("abcde345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 2, 4, S("abcde345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 4, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 4, 1, S("abcde5j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 4, 2, S("abcde5j"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 5, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 5, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 0, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 0, 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 0, 9, S("abcde123456789j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 0, 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 0, 11, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 1, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 1, 1, S("abcde2j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 1, 4, S("abcde2345j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 1, 8, S("abcde23456789j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 1, 9, S("abcde234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 1, 10, S("abcde234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 5, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 5, 1, S("abcde6j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 5, 2, S("abcde67j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 5, 4, S("abcde6789j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 5, 5, S("abcde67890j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 5, 6, S("abcde67890j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 9, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 9, 1, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 9, 2, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 10, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 10, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 0, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 0, 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 1, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 1, 1, S("abcde2j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 1, 9, S("abcde234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 10, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 10, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 10, 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 10, 9, S("abcde123456789j"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test31()
+{
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 10, 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 10, 11, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 19, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 19, 1, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 19, 2, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 20, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 20, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, SV(""), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV(""), 0, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 0, 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 0, 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 0, 6, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 1, 2, S("abcde23"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 1, 3, S("abcde234"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 1, 5, S("abcde2345"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 2, 1, S("abcde3"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 2, 2, S("abcde34"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 2, 3, S("abcde345"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 2, 4, S("abcde345"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 4, 1, S("abcde5"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 4, 2, S("abcde5"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, SV(""), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV(""), 0, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 0, 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 0, 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 0, 6, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 1, 2, S("abcde23"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 1, 3, S("abcde234"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 1, 5, S("abcde2345"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 2, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 2, 1, S("abcde3"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 2, 2, S("abcde34"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test32()
+{
+    test(S("abcdefghij"), 5, 6, SV("12345"), 2, 3, S("abcde345"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 2, 4, S("abcde345"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 4, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 4, 1, S("abcde5"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 4, 2, S("abcde5"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 5, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 9, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 10, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 0, 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 0, 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 0, 6, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 1, 2, S("abcdefghi23j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 1, 3, S("abcdefghi234j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 1, 5, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 2, 1, S("abcdefghi3j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 2, 2, S("abcdefghi34j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 2, 3, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 2, 4, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 4, 1, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 4, 2, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 0, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 0, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 1, 8, S("abcdefghi23456789j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 1, 10, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 5, 1, S("abcdefghi6j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 5, 2, S("abcdefghi67j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 5, 4, S("abcdefghi6789j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 5, 5, S("abcdefghi67890j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 5, 6, S("abcdefghi67890j"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test33()
+{
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 9, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 9, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 10, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 10, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 10, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 10, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 10, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 19, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 19, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, SV(""), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV(""), 0, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 0, 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 0, 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 0, 6, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 1, 2, S("abcdefghi23"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 1, 3, S("abcdefghi234"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 1, 5, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 2, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 2, 1, S("abcdefghi3"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 2, 2, S("abcdefghi34"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 2, 3, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 2, 4, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 4, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 4, 1, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 4, 2, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 5, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 0, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 0, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 1, 8, S("abcdefghi23456789"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 1, 10, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 5, 1, S("abcdefghi6"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 5, 2, S("abcdefghi67"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 5, 4, S("abcdefghi6789"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 5, 5, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 5, 6, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 9, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 9, 1, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 9, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 10, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 19, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 19, 1, S("abcdefghi0"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test34()
+{
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 19, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 20, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 20, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, SV(""), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV(""), 0, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 0, 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 0, 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 0, 6, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 1, 2, S("abcdefghi23"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 1, 3, S("abcdefghi234"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 1, 5, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 2, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 2, 1, S("abcdefghi3"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 2, 2, S("abcdefghi34"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 2, 3, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 2, 4, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 4, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 4, 1, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 4, 2, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 5, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 0, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 0, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 1, 8, S("abcdefghi23456789"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 1, 10, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 5, 1, S("abcdefghi6"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 5, 2, S("abcdefghi67"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 5, 4, S("abcdefghi6789"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 5, 5, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 5, 6, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 9, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 9, 1, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 9, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 10, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 10, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 10, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 10, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 10, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 10, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 19, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 19, 1, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 19, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 20, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 20, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 4, 1, S("abcdefghij5"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test35()
+{
+    test(S("abcdefghij"), 10, 0, SV("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 10, 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test36()
+{
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV(""), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV(""), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test37()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 0, 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 0, 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 0, 6, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 1, 2, S("23abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 1, 3, S("234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 1, 4, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 1, 5, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 2, 1, S("3abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 2, 2, S("34abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 2, 3, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 2, 4, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 4, 1, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 4, 2, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 0, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 0, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 1, 4, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 1, 8, S("23456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 1, 10, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 5, 1, S("6abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 5, 2, S("67abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 5, 4, S("6789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 5, 5, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 5, 6, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 9, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 9, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 1, 18, S("234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 10, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 10, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 10, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 10, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 10, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 19, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 19, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 0, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 0, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 0, 2, S("12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 0, 4, S("1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 0, 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 0, 6, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 1, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 1, 1, S("2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 1, 2, S("23bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 1, 3, S("234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 1, 4, S("2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 1, 5, S("2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 2, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 2, 1, S("3bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 2, 2, S("34bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 2, 3, S("345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 2, 4, S("345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 4, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 4, 1, S("5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 4, 2, S("5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 5, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 5, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), 6, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test38()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 0, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 0, 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 0, 9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 0, 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 0, 11, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 1, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 1, 1, S("2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 1, 4, S("2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 1, 8, S("23456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 1, 9, S("234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 1, 10, S("234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 5, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 5, 1, S("6bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 5, 2, S("67bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 5, 4, S("6789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 5, 5, S("67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 5, 6, S("67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 9, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 9, 1, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 9, 2, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 10, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 10, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 0, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 0, 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 0, 19, S("1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 0, 20, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 0, 21, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 1, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 1, 1, S("2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 1, 9, S("234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 1, 18, S("234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 1, 19, S("2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 1, 20, S("2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 10, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 10, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 10, 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 10, 9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 10, 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 10, 11, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 19, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 19, 1, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 19, 2, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 20, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 20, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 0, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 0, 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 0, 2, S("12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 0, 4, S("1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 0, 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 0, 6, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 1, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 1, 1, S("2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 1, 2, S("23klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 1, 3, S("234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 1, 4, S("2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 1, 5, S("2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 2, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 2, 1, S("3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 2, 2, S("34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 2, 3, S("345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 2, 4, S("345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 4, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 4, 1, S("5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 4, 2, S("5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 5, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 5, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 0, 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 0, 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 0, 9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 0, 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 0, 11, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 1, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 1, 1, S("2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 1, 4, S("2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 1, 8, S("23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 1, 9, S("234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 1, 10, S("234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 5, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 5, 1, S("6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 5, 2, S("67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 5, 4, S("6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 5, 5, S("67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 5, 6, S("67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 9, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 9, 1, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 9, 2, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 10, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 10, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 0, 1, S("1klmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test39()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 0, 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 0, 19, S("1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 0, 20, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 0, 21, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 1, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 1, 1, S("2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 1, 9, S("234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 1, 18, S("234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 1, 19, S("2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 1, 20, S("2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 10, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 10, 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 10, 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 10, 9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 10, 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 10, 11, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 19, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 19, 1, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 19, 2, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 20, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 20, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 0, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 0, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 0, 2, S("12t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 0, 4, S("1234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 0, 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 0, 6, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 1, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 1, 1, S("2t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 1, 2, S("23t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 1, 3, S("234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 1, 4, S("2345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 1, 5, S("2345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 2, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 2, 1, S("3t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 2, 2, S("34t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 2, 3, S("345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 2, 4, S("345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 4, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 4, 1, S("5t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 4, 2, S("5t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 5, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 5, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 0, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 0, 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 0, 9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 0, 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 0, 11, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 1, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 1, 1, S("2t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 1, 4, S("2345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 1, 8, S("23456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 1, 9, S("234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 1, 10, S("234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 5, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 5, 1, S("6t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 5, 2, S("67t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 5, 4, S("6789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 5, 5, S("67890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 5, 6, S("67890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 9, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 9, 1, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 9, 2, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 10, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 10, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 0, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 0, 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 0, 19, S("1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 0, 20, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 0, 21, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 1, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 1, 1, S("2t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 1, 9, S("234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 1, 18, S("234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 1, 19, S("2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 1, 20, S("2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 10, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 10, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 10, 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 10, 9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 10, 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 10, 11, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 19, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 19, 1, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 19, 2, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 20, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 20, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 0, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 0, 0, S(""));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test40()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 0, 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 0, 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 0, 6, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 1, 2, S("23"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 1, 3, S("234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 1, 5, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 2, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 2, 1, S("3"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 2, 2, S("34"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 2, 3, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 2, 4, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 4, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 4, 1, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 4, 2, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 5, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 0, 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 9, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 10, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 0, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 0, 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 0, 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 0, 6, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 1, 2, S("23"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 1, 3, S("234"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 1, 5, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 2, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 2, 1, S("3"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 2, 2, S("34"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 2, 3, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 2, 4, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 4, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 4, 1, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 4, 2, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 5, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 0, 9, S("123456789"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test41()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 9, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 10, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 0, 2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 0, 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 0, 6, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 1, 2, S("a23bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 1, 3, S("a234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 1, 5, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 2, 1, S("a3bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 2, 2, S("a34bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 2, 3, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 2, 4, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 4, 1, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 4, 2, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 0, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 0, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 1, 8, S("a23456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 1, 10, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 5, 1, S("a6bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 5, 2, S("a67bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 5, 4, S("a6789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 5, 5, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 5, 6, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 9, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 9, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test42()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 10, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 10, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 10, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 10, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 10, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 19, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 19, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 0, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 0, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 0, 2, S("a12cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 0, 4, S("a1234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 0, 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 0, 6, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 1, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 1, 1, S("a2cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 1, 2, S("a23cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 1, 3, S("a234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 1, 4, S("a2345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 1, 5, S("a2345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 2, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 2, 1, S("a3cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 2, 2, S("a34cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 2, 3, S("a345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 2, 4, S("a345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 4, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 4, 1, S("a5cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 4, 2, S("a5cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 5, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 5, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 0, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 0, 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 0, 9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 0, 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 0, 11, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 1, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 1, 1, S("a2cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 1, 4, S("a2345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 1, 8, S("a23456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 1, 9, S("a234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 1, 10, S("a234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 5, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 5, 1, S("a6cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 5, 2, S("a67cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 5, 4, S("a6789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 5, 5, S("a67890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 5, 6, S("a67890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 9, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 9, 1, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 9, 2, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 10, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 10, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 0, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 0, 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 0, 19, S("a1234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 0, 20, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 0, 21, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 1, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 1, 1, S("a2cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 1, 9, S("a234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 1, 18, S("a234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 1, 19, S("a2345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 1, 20, S("a2345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 10, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 10, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 10, 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 10, 9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 10, 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 10, 11, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 19, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 19, 1, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 19, 2, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 20, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 20, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 0, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 0, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 0, 2, S("a12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 0, 4, S("a1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 0, 5, S("a12345klmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test43()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 0, 6, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 1, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 1, 1, S("a2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 1, 2, S("a23klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 1, 3, S("a234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 1, 4, S("a2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 1, 5, S("a2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 2, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 2, 1, S("a3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 2, 2, S("a34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 2, 3, S("a345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 2, 4, S("a345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 4, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 4, 1, S("a5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 4, 2, S("a5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 5, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 5, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 0, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 0, 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 0, 9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 0, 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 0, 11, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 1, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 1, 1, S("a2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 1, 4, S("a2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 1, 8, S("a23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 1, 9, S("a234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 1, 10, S("a234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 5, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 5, 1, S("a6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 5, 2, S("a67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 5, 4, S("a6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 5, 5, S("a67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 5, 6, S("a67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 9, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 9, 1, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 9, 2, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 10, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 10, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 0, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 0, 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 0, 19, S("a1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 0, 20, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 0, 21, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 1, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 1, 1, S("a2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 1, 9, S("a234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 1, 18, S("a234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 1, 19, S("a2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 1, 20, S("a2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 10, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 10, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 10, 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 10, 9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 10, 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 10, 11, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 19, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 19, 1, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 19, 2, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 20, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 20, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 0, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 0, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 0, 2, S("a12t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 0, 4, S("a1234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 0, 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 0, 6, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 1, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 1, 1, S("a2t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 1, 2, S("a23t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 1, 3, S("a234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 1, 4, S("a2345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 1, 5, S("a2345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 2, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 2, 1, S("a3t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 2, 2, S("a34t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 2, 3, S("a345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 2, 4, S("a345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 4, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 4, 1, S("a5t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 4, 2, S("a5t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 5, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 5, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 0, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 0, 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 0, 9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 0, 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 0, 11, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 1, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 1, 1, S("a2t"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test44()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 1, 4, S("a2345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 1, 8, S("a23456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 1, 9, S("a234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 1, 10, S("a234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 5, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 5, 1, S("a6t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 5, 2, S("a67t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 5, 4, S("a6789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 5, 5, S("a67890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 5, 6, S("a67890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 9, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 9, 1, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 9, 2, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 10, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 10, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 0, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 0, 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 0, 19, S("a1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 0, 20, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 0, 21, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 1, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 1, 1, S("a2t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 1, 9, S("a234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 1, 18, S("a234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 1, 19, S("a2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 1, 20, S("a2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 10, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 10, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 10, 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 10, 9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 10, 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 10, 11, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 19, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 19, 1, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 19, 2, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 20, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 20, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 0, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 0, 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 1, 2, S("a23"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 1, 3, S("a234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 2, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 2, 1, S("a3"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 2, 2, S("a34"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 2, 3, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 2, 4, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 4, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 4, 1, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 4, 2, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 5, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 1, 18, S("a234567890123456789"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test45()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 0, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 0, 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 1, 2, S("a23"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 1, 3, S("a234"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 2, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 2, 1, S("a3"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 2, 2, S("a34"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 2, 3, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 2, 4, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 4, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 4, 1, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 4, 2, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 5, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 0, 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 0, 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 0, 6, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 1, 2, S("abcdefghij23klmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test46()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 1, 3, S("abcdefghij234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 1, 5, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 2, 1, S("abcdefghij3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 2, 2, S("abcdefghij34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 2, 3, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 2, 4, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 4, 1, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 4, 2, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 0, 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 0, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 1, 8, S("abcdefghij23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 1, 10, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 5, 1, S("abcdefghij6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 5, 2, S("abcdefghij67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 5, 4, S("abcdefghij6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 5, 5, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 5, 6, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 9, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 9, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 10, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 10, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 19, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 19, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 0, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 0, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 0, 2, S("abcdefghij12lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 0, 4, S("abcdefghij1234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 0, 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 0, 6, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 1, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 1, 1, S("abcdefghij2lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 1, 2, S("abcdefghij23lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 1, 3, S("abcdefghij234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 1, 4, S("abcdefghij2345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 1, 5, S("abcdefghij2345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 2, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 2, 1, S("abcdefghij3lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 2, 2, S("abcdefghij34lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 2, 3, S("abcdefghij345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 2, 4, S("abcdefghij345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 4, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 4, 1, S("abcdefghij5lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 4, 2, S("abcdefghij5lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 5, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 5, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 0, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 0, 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 0, 9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 0, 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 0, 11, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 1, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 1, 1, S("abcdefghij2lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 1, 4, S("abcdefghij2345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 1, 8, S("abcdefghij23456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 1, 9, S("abcdefghij234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 1, 10, S("abcdefghij234567890lmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test47()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 5, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 5, 1, S("abcdefghij6lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 5, 2, S("abcdefghij67lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 5, 4, S("abcdefghij6789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 5, 5, S("abcdefghij67890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 5, 6, S("abcdefghij67890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 9, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 9, 1, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 9, 2, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 10, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 10, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 0, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 1, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 1, 1, S("abcdefghij2lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 10, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 10, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 10, 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 19, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 19, 1, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 19, 2, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 20, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 20, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 0, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 0, 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 0, 2, S("abcdefghij12pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 0, 4, S("abcdefghij1234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 0, 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 0, 6, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 1, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 1, 1, S("abcdefghij2pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 1, 2, S("abcdefghij23pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 1, 3, S("abcdefghij234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 1, 4, S("abcdefghij2345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 1, 5, S("abcdefghij2345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 2, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 2, 1, S("abcdefghij3pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 2, 2, S("abcdefghij34pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 2, 3, S("abcdefghij345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 2, 4, S("abcdefghij345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 4, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 4, 1, S("abcdefghij5pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 4, 2, S("abcdefghij5pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 5, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 5, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 0, 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 0, 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 0, 9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 0, 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 0, 11, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 1, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 1, 1, S("abcdefghij2pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 1, 4, S("abcdefghij2345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 1, 8, S("abcdefghij23456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 1, 9, S("abcdefghij234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 1, 10, S("abcdefghij234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 5, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 5, 1, S("abcdefghij6pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 5, 2, S("abcdefghij67pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 5, 4, S("abcdefghij6789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 5, 5, S("abcdefghij67890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 5, 6, S("abcdefghij67890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 9, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 9, 1, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 9, 2, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 10, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 10, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 0, 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 1, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 1, 1, S("abcdefghij2pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 10, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 10, 1, S("abcdefghij1pqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test48()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 10, 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 19, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 19, 1, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 19, 2, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 20, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 20, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 0, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 0, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 0, 2, S("abcdefghij12t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 0, 4, S("abcdefghij1234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 0, 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 0, 6, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 1, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 1, 1, S("abcdefghij2t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 1, 2, S("abcdefghij23t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 1, 3, S("abcdefghij234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 1, 4, S("abcdefghij2345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 1, 5, S("abcdefghij2345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 2, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 2, 1, S("abcdefghij3t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 2, 2, S("abcdefghij34t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 2, 3, S("abcdefghij345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 2, 4, S("abcdefghij345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 4, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 4, 1, S("abcdefghij5t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 4, 2, S("abcdefghij5t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 5, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 5, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 0, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 0, 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 0, 9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 0, 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 0, 11, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 1, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 1, 1, S("abcdefghij2t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 1, 4, S("abcdefghij2345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 1, 8, S("abcdefghij23456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 1, 9, S("abcdefghij234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 1, 10, S("abcdefghij234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 5, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 5, 1, S("abcdefghij6t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 5, 2, S("abcdefghij67t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 5, 4, S("abcdefghij6789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 5, 5, S("abcdefghij67890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 5, 6, S("abcdefghij67890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 9, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 9, 1, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 9, 2, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 10, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 10, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 0, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 1, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 1, 1, S("abcdefghij2t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 10, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 10, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 10, 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 19, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 19, 1, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 19, 2, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 20, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 20, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 2, 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test49()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 5, 4, S("abcdefghij6789"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test50()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 0, 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 0, 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 0, 6, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 1, 2, S("abcdefghijklmnopqrs23t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 1, 3, S("abcdefghijklmnopqrs234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 1, 5, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 2, 1, S("abcdefghijklmnopqrs3t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 2, 2, S("abcdefghijklmnopqrs34t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 2, 3, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 2, 4, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 4, 1, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 4, 2, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrs6t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrs67t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890t"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test51()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 0, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 0, 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 0, 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 0, 6, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 1, 2, S("abcdefghijklmnopqrs23"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 1, 3, S("abcdefghijklmnopqrs234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 1, 5, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 2, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 2, 1, S("abcdefghijklmnopqrs3"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 2, 2, S("abcdefghijklmnopqrs34"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 2, 3, S("abcdefghijklmnopqrs345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 2, 4, S("abcdefghijklmnopqrs345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 4, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 4, 1, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 4, 2, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 5, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrs6"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrs67"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 0, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 0, 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 0, 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 0, 6, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 1, 2, S("abcdefghijklmnopqrs23"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 1, 3, S("abcdefghijklmnopqrs234"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 1, 5, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 2, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 2, 1, S("abcdefghijklmnopqrs3"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 2, 2, S("abcdefghijklmnopqrs34"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 2, 3, S("abcdefghijklmnopqrs345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 2, 4, S("abcdefghijklmnopqrs345"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test52()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 4, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 4, 1, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 4, 2, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 5, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrs6"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrs67"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test53()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test54()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), 21, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test55()
+{
+    test_npos(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 10, S("abcdefghi1234567890"));
+    test_npos(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 19, S("abcdefghi0"));
+    test_npos(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 20, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 20, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 1, SV("12345678901234567890"), 21, S("can't happen"));
+    test_npos(S("abcdefghij"), 9, 2, SV(""), 0, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 2, SV(""), 1, S("can't happen"));
+    test_npos(S("abcdefghij"), 9, 2, SV("12345"), 0, S("abcdefghi12345"));
+    test_npos(S("abcdefghij"), 9, 2, SV("12345"), 1, S("abcdefghi2345"));
+    test_npos(S("abcdefghij"), 9, 2, SV("12345"), 2, S("abcdefghi345"));
+    test_npos(S("abcdefghij"), 9, 2, SV("12345"), 4, S("abcdefghi5"));
+    test_npos(S("abcdefghij"), 9, 2, SV("12345"), 5, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 2, SV("12345"), 6, S("can't happen"));
+
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20 bool test56() {
+    typedef std::string S;
+    typedef std::string_view SV;
+    S s0 = "ABCD";
+    S s;
+    SV sv = "EFGH";
+    char arr[] = "IJKL";
+
+    s = s0;
+    s.replace(0, 4, "CDEF", 0);    // calls replace(pos1, n1, const char *, len)
+    assert(s == "");
+
+    s = s0;
+    s.replace(0, 4, "QRST", 0, std::string::npos); // calls replace(pos1, n1, string("QRST"), pos, npos)
+    assert(s == "QRST");
+
+    s = s0;
+    s.replace(0, 4, sv, 0);  // calls replace(pos1, n1, T, pos, npos)
+    assert(s == sv);
+
+    s = s0;
+    s.replace(0, 4, sv, 0, std::string::npos);   // calls replace(pos1, n1, T, pos, npos)
+    assert(s == sv);
+
+    s = s0;
+    s.replace(0, 4, arr, 0);     // calls replace(pos1, n1, const char *, len)
+    assert(s == "");
+
+    s = s0;
+    s.replace(0, 4, arr, 0, std::string::npos);    // calls replace(pos1, n1, string("IJKL"), pos, npos)
+    assert(s == "IJKL");
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test() {
+  test0<S, SV>();
+  test1<S, SV>();
+  test2<S, SV>();
+  test3<S, SV>();
+  test4<S, SV>();
+  test5<S, SV>();
+  test6<S, SV>();
+  test7<S, SV>();
+  test8<S, SV>();
+  test9<S, SV>();
+  test10<S, SV>();
+  test11<S, SV>();
+  test12<S, SV>();
+  test13<S, SV>();
+  test14<S, SV>();
+  test15<S, SV>();
+  test16<S, SV>();
+  test17<S, SV>();
+  test18<S, SV>();
+  test19<S, SV>();
+  test20<S, SV>();
+  test21<S, SV>();
+  test22<S, SV>();
+  test23<S, SV>();
+  test24<S, SV>();
+  test25<S, SV>();
+  test26<S, SV>();
+  test27<S, SV>();
+  test28<S, SV>();
+  test29<S, SV>();
+  test30<S, SV>();
+  test31<S, SV>();
+  test32<S, SV>();
+  test33<S, SV>();
+  test34<S, SV>();
+  test35<S, SV>();
+  test36<S, SV>();
+  test37<S, SV>();
+  test38<S, SV>();
+  test39<S, SV>();
+  test40<S, SV>();
+  test41<S, SV>();
+  test42<S, SV>();
+  test43<S, SV>();
+  test44<S, SV>();
+  test45<S, SV>();
+  test46<S, SV>();
+  test47<S, SV>();
+  test48<S, SV>();
+  test49<S, SV>();
+  test50<S, SV>();
+  test51<S, SV>();
+  test52<S, SV>();
+  test53<S, SV>();
+  test54<S, SV>();
+  test55<S, SV>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S, SV>());
+  static_assert(test1<S, SV>());
+  static_assert(test2<S, SV>());
+  static_assert(test3<S, SV>());
+  static_assert(test4<S, SV>());
+  static_assert(test5<S, SV>());
+  static_assert(test6<S, SV>());
+  static_assert(test7<S, SV>());
+  static_assert(test8<S, SV>());
+  static_assert(test9<S, SV>());
+  static_assert(test10<S, SV>());
+  static_assert(test11<S, SV>());
+  static_assert(test12<S, SV>());
+  static_assert(test13<S, SV>());
+  static_assert(test14<S, SV>());
+  static_assert(test15<S, SV>());
+  static_assert(test16<S, SV>());
+  static_assert(test17<S, SV>());
+  static_assert(test18<S, SV>());
+  static_assert(test19<S, SV>());
+  static_assert(test20<S, SV>());
+  static_assert(test21<S, SV>());
+  static_assert(test22<S, SV>());
+  static_assert(test23<S, SV>());
+  static_assert(test24<S, SV>());
+  static_assert(test25<S, SV>());
+  static_assert(test26<S, SV>());
+  static_assert(test27<S, SV>());
+  static_assert(test28<S, SV>());
+  static_assert(test29<S, SV>());
+  static_assert(test30<S, SV>());
+  static_assert(test31<S, SV>());
+  static_assert(test32<S, SV>());
+  static_assert(test33<S, SV>());
+  static_assert(test34<S, SV>());
+  static_assert(test35<S, SV>());
+  static_assert(test36<S, SV>());
+  static_assert(test37<S, SV>());
+  static_assert(test38<S, SV>());
+  static_assert(test39<S, SV>());
+  static_assert(test40<S, SV>());
+  static_assert(test41<S, SV>());
+  static_assert(test42<S, SV>());
+  static_assert(test43<S, SV>());
+  static_assert(test44<S, SV>());
+  static_assert(test45<S, SV>());
+  static_assert(test46<S, SV>());
+  static_assert(test47<S, SV>());
+  static_assert(test48<S, SV>());
+  static_assert(test49<S, SV>());
+  static_assert(test50<S, SV>());
+  static_assert(test51<S, SV>());
+  static_assert(test52<S, SV>());
+  static_assert(test53<S, SV>());
+  static_assert(test54<S, SV>());
+  static_assert(test55<S, SV>());
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test<std::string, std::string_view>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>,
+       std::basic_string_view<char, std::char_traits<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer.pass.cpp
new file mode 100644
index 0000000..672a984
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer.pass.cpp
@@ -0,0 +1,394 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(size_type pos, size_type n1, const charT* s); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, typename S::size_type n1,
+     const typename S::value_type* str, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.replace(pos, n1, str);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos);
+        typename S::size_type rlen = S::traits_type::length(str);
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos, n1, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, "", S(""));
+    test(S(""), 0, 0, "12345", S("12345"));
+    test(S(""), 0, 0, "1234567890", S("1234567890"));
+    test(S(""), 0, 0, "12345678901234567890", S("12345678901234567890"));
+    test(S(""), 0, 1, "", S(""));
+    test(S(""), 0, 1, "12345", S("12345"));
+    test(S(""), 0, 1, "1234567890", S("1234567890"));
+    test(S(""), 0, 1, "12345678901234567890", S("12345678901234567890"));
+    test(S(""), 1, 0, "", S("can't happen"));
+    test(S(""), 1, 0, "12345", S("can't happen"));
+    test(S(""), 1, 0, "1234567890", S("can't happen"));
+    test(S(""), 1, 0, "12345678901234567890", S("can't happen"));
+    test(S("abcde"), 0, 0, "", S("abcde"));
+    test(S("abcde"), 0, 0, "12345", S("12345abcde"));
+    test(S("abcde"), 0, 0, "1234567890", S("1234567890abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, "", S("bcde"));
+    test(S("abcde"), 0, 1, "12345", S("12345bcde"));
+    test(S("abcde"), 0, 1, "1234567890", S("1234567890bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, "", S("cde"));
+    test(S("abcde"), 0, 2, "12345", S("12345cde"));
+    test(S("abcde"), 0, 2, "1234567890", S("1234567890cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, "", S("e"));
+    test(S("abcde"), 0, 4, "12345", S("12345e"));
+    test(S("abcde"), 0, 4, "1234567890", S("1234567890e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, "", S(""));
+    test(S("abcde"), 0, 5, "12345", S("12345"));
+    test(S("abcde"), 0, 5, "1234567890", S("1234567890"));
+    test(S("abcde"), 0, 5, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcde"), 0, 6, "", S(""));
+    test(S("abcde"), 0, 6, "12345", S("12345"));
+    test(S("abcde"), 0, 6, "1234567890", S("1234567890"));
+    test(S("abcde"), 0, 6, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcde"), 1, 0, "", S("abcde"));
+    test(S("abcde"), 1, 0, "12345", S("a12345bcde"));
+    test(S("abcde"), 1, 0, "1234567890", S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, "", S("acde"));
+    test(S("abcde"), 1, 1, "12345", S("a12345cde"));
+    test(S("abcde"), 1, 1, "1234567890", S("a1234567890cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, "", S("ade"));
+    test(S("abcde"), 1, 2, "12345", S("a12345de"));
+    test(S("abcde"), 1, 2, "1234567890", S("a1234567890de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, "", S("ae"));
+    test(S("abcde"), 1, 3, "12345", S("a12345e"));
+    test(S("abcde"), 1, 3, "1234567890", S("a1234567890e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, "", S("a"));
+    test(S("abcde"), 1, 4, "12345", S("a12345"));
+    test(S("abcde"), 1, 4, "1234567890", S("a1234567890"));
+    test(S("abcde"), 1, 4, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, "", S("a"));
+    test(S("abcde"), 1, 5, "12345", S("a12345"));
+    test(S("abcde"), 1, 5, "1234567890", S("a1234567890"));
+    test(S("abcde"), 1, 5, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, "", S("abcde"));
+    test(S("abcde"), 2, 0, "12345", S("ab12345cde"));
+    test(S("abcde"), 2, 0, "1234567890", S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, "", S("abde"));
+    test(S("abcde"), 2, 1, "12345", S("ab12345de"));
+    test(S("abcde"), 2, 1, "1234567890", S("ab1234567890de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, "", S("abe"));
+    test(S("abcde"), 2, 2, "12345", S("ab12345e"));
+    test(S("abcde"), 2, 2, "1234567890", S("ab1234567890e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, "", S("ab"));
+    test(S("abcde"), 2, 3, "12345", S("ab12345"));
+    test(S("abcde"), 2, 3, "1234567890", S("ab1234567890"));
+    test(S("abcde"), 2, 3, "12345678901234567890", S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, "", S("ab"));
+    test(S("abcde"), 2, 4, "12345", S("ab12345"));
+    test(S("abcde"), 2, 4, "1234567890", S("ab1234567890"));
+    test(S("abcde"), 2, 4, "12345678901234567890", S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, "", S("abcde"));
+    test(S("abcde"), 4, 0, "12345", S("abcd12345e"));
+    test(S("abcde"), 4, 0, "1234567890", S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, "", S("abcd"));
+    test(S("abcde"), 4, 1, "12345", S("abcd12345"));
+    test(S("abcde"), 4, 1, "1234567890", S("abcd1234567890"));
+    test(S("abcde"), 4, 1, "12345678901234567890", S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, "", S("abcd"));
+    test(S("abcde"), 4, 2, "12345", S("abcd12345"));
+    test(S("abcde"), 4, 2, "1234567890", S("abcd1234567890"));
+    test(S("abcde"), 4, 2, "12345678901234567890", S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, "", S("abcde"));
+    test(S("abcde"), 5, 0, "12345", S("abcde12345"));
+    test(S("abcde"), 5, 0, "1234567890", S("abcde1234567890"));
+    test(S("abcde"), 5, 0, "12345678901234567890", S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, "", S("abcde"));
+    test(S("abcde"), 5, 1, "12345", S("abcde12345"));
+    test(S("abcde"), 5, 1, "1234567890", S("abcde1234567890"));
+    test(S("abcde"), 5, 1, "12345678901234567890", S("abcde12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 6, 0, "", S("can't happen"));
+    test(S("abcde"), 6, 0, "12345", S("can't happen"));
+    test(S("abcde"), 6, 0, "1234567890", S("can't happen"));
+    test(S("abcde"), 6, 0, "12345678901234567890", S("can't happen"));
+    test(S("abcdefghij"), 0, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, "", S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, "", S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, "", S("j"));
+    test(S("abcdefghij"), 0, 9, "12345", S("12345j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, "", S(""));
+    test(S("abcdefghij"), 0, 10, "12345", S("12345"));
+    test(S("abcdefghij"), 0, 10, "1234567890", S("1234567890"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, "", S(""));
+    test(S("abcdefghij"), 0, 11, "12345", S("12345"));
+    test(S("abcdefghij"), 0, 11, "1234567890", S("1234567890"));
+    test(S("abcdefghij"), 0, 11, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, "", S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 4, "", S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345", S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, "", S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345", S("a12345j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, "", S("a"));
+    test(S("abcdefghij"), 1, 9, "12345", S("a12345"));
+    test(S("abcdefghij"), 1, 9, "1234567890", S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, "", S("a"));
+    test(S("abcdefghij"), 1, 10, "12345", S("a12345"));
+    test(S("abcdefghij"), 1, 10, "1234567890", S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345", S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, "", S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345", S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, "", S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345", S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, "", S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345", S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, "", S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345", S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, "1234567890", S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, "", S("abcde"));
+    test(S("abcdefghij"), 5, 6, "12345", S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, "1234567890", S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, "12345678901234567890", S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345", S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, "", S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345", S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, "1234567890", S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, "", S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, "12345", S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, "1234567890", S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, "12345678901234567890", S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, "", S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345", S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, "1234567890", S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, "", S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, "12345", S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, "1234567890", S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, "12345678901234567890", S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 11, 0, "", S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345", S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "1234567890", S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345678901234567890", S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "", S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "", S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "", S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "", S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "", S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345", S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "1234567890", S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345678901234567890", S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "", S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "", S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "", S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "", S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "", S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345", S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "1234567890", S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345678901234567890", S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "", S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "", S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "", S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "", S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "", S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345", S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "1234567890", S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345678901234567890", S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "", S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "", S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345", S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "1234567890", S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345678901234567890", S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "", S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345", S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "1234567890", S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345678901234567890", S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "", S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345", S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "1234567890", S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345678901234567890", S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  {
+    test0<S>();
+    test1<S>();
+    test2<S>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S>());
+    static_assert(test1<S>());
+    static_assert(test2<S>());
+#endif
+  }
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer_size.pass.cpp
new file mode 100644
index 0000000..352ce57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_pointer_size.pass.cpp
@@ -0,0 +1,1363 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(size_type pos, size_type n1, const charT* s, size_type n2); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, typename S::size_type n1,
+     const typename S::value_type* str, typename S::size_type n2,
+     S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.replace(pos, n1, str, n2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos);
+        typename S::size_type rlen = n2;
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos, n1, str, n2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, "", 0, S(""));
+    test(S(""), 0, 0, "12345", 0, S(""));
+    test(S(""), 0, 0, "12345", 1, S("1"));
+    test(S(""), 0, 0, "12345", 2, S("12"));
+    test(S(""), 0, 0, "12345", 4, S("1234"));
+    test(S(""), 0, 0, "12345", 5, S("12345"));
+    test(S(""), 0, 0, "1234567890", 0, S(""));
+    test(S(""), 0, 0, "1234567890", 1, S("1"));
+    test(S(""), 0, 0, "1234567890", 5, S("12345"));
+    test(S(""), 0, 0, "1234567890", 9, S("123456789"));
+    test(S(""), 0, 0, "1234567890", 10, S("1234567890"));
+    test(S(""), 0, 0, "12345678901234567890", 0, S(""));
+    test(S(""), 0, 0, "12345678901234567890", 1, S("1"));
+    test(S(""), 0, 0, "12345678901234567890", 10, S("1234567890"));
+    test(S(""), 0, 0, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S(""), 0, 0, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S(""), 0, 1, "", 0, S(""));
+    test(S(""), 0, 1, "12345", 0, S(""));
+    test(S(""), 0, 1, "12345", 1, S("1"));
+    test(S(""), 0, 1, "12345", 2, S("12"));
+    test(S(""), 0, 1, "12345", 4, S("1234"));
+    test(S(""), 0, 1, "12345", 5, S("12345"));
+    test(S(""), 0, 1, "1234567890", 0, S(""));
+    test(S(""), 0, 1, "1234567890", 1, S("1"));
+    test(S(""), 0, 1, "1234567890", 5, S("12345"));
+    test(S(""), 0, 1, "1234567890", 9, S("123456789"));
+    test(S(""), 0, 1, "1234567890", 10, S("1234567890"));
+    test(S(""), 0, 1, "12345678901234567890", 0, S(""));
+    test(S(""), 0, 1, "12345678901234567890", 1, S("1"));
+    test(S(""), 0, 1, "12345678901234567890", 10, S("1234567890"));
+    test(S(""), 0, 1, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S(""), 0, 1, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S(""), 1, 0, "", 0, S("can't happen"));
+    test(S(""), 1, 0, "12345", 0, S("can't happen"));
+    test(S(""), 1, 0, "12345", 1, S("can't happen"));
+    test(S(""), 1, 0, "12345", 2, S("can't happen"));
+    test(S(""), 1, 0, "12345", 4, S("can't happen"));
+    test(S(""), 1, 0, "12345", 5, S("can't happen"));
+    test(S(""), 1, 0, "1234567890", 0, S("can't happen"));
+    test(S(""), 1, 0, "1234567890", 1, S("can't happen"));
+    test(S(""), 1, 0, "1234567890", 5, S("can't happen"));
+    test(S(""), 1, 0, "1234567890", 9, S("can't happen"));
+    test(S(""), 1, 0, "1234567890", 10, S("can't happen"));
+    test(S(""), 1, 0, "12345678901234567890", 0, S("can't happen"));
+    test(S(""), 1, 0, "12345678901234567890", 1, S("can't happen"));
+    test(S(""), 1, 0, "12345678901234567890", 10, S("can't happen"));
+    test(S(""), 1, 0, "12345678901234567890", 19, S("can't happen"));
+    test(S(""), 1, 0, "12345678901234567890", 20, S("can't happen"));
+    test(S("abcde"), 0, 0, "", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "12345", 1, S("1abcde"));
+    test(S("abcde"), 0, 0, "12345", 2, S("12abcde"));
+    test(S("abcde"), 0, 0, "12345", 4, S("1234abcde"));
+    test(S("abcde"), 0, 0, "12345", 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 1, S("1abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, "1234567890", 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 1, S("1abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, 0, "12345678901234567890", 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, "", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "12345", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "12345", 1, S("1bcde"));
+    test(S("abcde"), 0, 1, "12345", 2, S("12bcde"));
+    test(S("abcde"), 0, 1, "12345", 4, S("1234bcde"));
+    test(S("abcde"), 0, 1, "12345", 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 1, S("1bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, "1234567890", 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 0, S("bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 1, S("1bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 19, S("1234567890123456789bcde"));
+    test(S("abcde"), 0, 1, "12345678901234567890", 20, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, "", 0, S("cde"));
+    test(S("abcde"), 0, 2, "12345", 0, S("cde"));
+    test(S("abcde"), 0, 2, "12345", 1, S("1cde"));
+    test(S("abcde"), 0, 2, "12345", 2, S("12cde"));
+    test(S("abcde"), 0, 2, "12345", 4, S("1234cde"));
+    test(S("abcde"), 0, 2, "12345", 5, S("12345cde"));
+    test(S("abcde"), 0, 2, "1234567890", 0, S("cde"));
+    test(S("abcde"), 0, 2, "1234567890", 1, S("1cde"));
+    test(S("abcde"), 0, 2, "1234567890", 5, S("12345cde"));
+    test(S("abcde"), 0, 2, "1234567890", 9, S("123456789cde"));
+    test(S("abcde"), 0, 2, "1234567890", 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 0, S("cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 1, S("1cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 19, S("1234567890123456789cde"));
+    test(S("abcde"), 0, 2, "12345678901234567890", 20, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, "", 0, S("e"));
+    test(S("abcde"), 0, 4, "12345", 0, S("e"));
+    test(S("abcde"), 0, 4, "12345", 1, S("1e"));
+    test(S("abcde"), 0, 4, "12345", 2, S("12e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 0, 4, "12345", 4, S("1234e"));
+    test(S("abcde"), 0, 4, "12345", 5, S("12345e"));
+    test(S("abcde"), 0, 4, "1234567890", 0, S("e"));
+    test(S("abcde"), 0, 4, "1234567890", 1, S("1e"));
+    test(S("abcde"), 0, 4, "1234567890", 5, S("12345e"));
+    test(S("abcde"), 0, 4, "1234567890", 9, S("123456789e"));
+    test(S("abcde"), 0, 4, "1234567890", 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 0, S("e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 1, S("1e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 19, S("1234567890123456789e"));
+    test(S("abcde"), 0, 4, "12345678901234567890", 20, S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, "", 0, S(""));
+    test(S("abcde"), 0, 5, "12345", 0, S(""));
+    test(S("abcde"), 0, 5, "12345", 1, S("1"));
+    test(S("abcde"), 0, 5, "12345", 2, S("12"));
+    test(S("abcde"), 0, 5, "12345", 4, S("1234"));
+    test(S("abcde"), 0, 5, "12345", 5, S("12345"));
+    test(S("abcde"), 0, 5, "1234567890", 0, S(""));
+    test(S("abcde"), 0, 5, "1234567890", 1, S("1"));
+    test(S("abcde"), 0, 5, "1234567890", 5, S("12345"));
+    test(S("abcde"), 0, 5, "1234567890", 9, S("123456789"));
+    test(S("abcde"), 0, 5, "1234567890", 10, S("1234567890"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 0, S(""));
+    test(S("abcde"), 0, 5, "12345678901234567890", 1, S("1"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 5, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcde"), 0, 6, "", 0, S(""));
+    test(S("abcde"), 0, 6, "12345", 0, S(""));
+    test(S("abcde"), 0, 6, "12345", 1, S("1"));
+    test(S("abcde"), 0, 6, "12345", 2, S("12"));
+    test(S("abcde"), 0, 6, "12345", 4, S("1234"));
+    test(S("abcde"), 0, 6, "12345", 5, S("12345"));
+    test(S("abcde"), 0, 6, "1234567890", 0, S(""));
+    test(S("abcde"), 0, 6, "1234567890", 1, S("1"));
+    test(S("abcde"), 0, 6, "1234567890", 5, S("12345"));
+    test(S("abcde"), 0, 6, "1234567890", 9, S("123456789"));
+    test(S("abcde"), 0, 6, "1234567890", 10, S("1234567890"));
+    test(S("abcde"), 0, 6, "12345678901234567890", 0, S(""));
+    test(S("abcde"), 0, 6, "12345678901234567890", 1, S("1"));
+    test(S("abcde"), 0, 6, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcde"), 0, 6, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 6, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcde"), 1, 0, "", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "12345", 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, "12345", 2, S("a12bcde"));
+    test(S("abcde"), 1, 0, "12345", 4, S("a1234bcde"));
+    test(S("abcde"), 1, 0, "12345", 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "1234567890", 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, "1234567890", 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, 0, "12345678901234567890", 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, "", 0, S("acde"));
+    test(S("abcde"), 1, 1, "12345", 0, S("acde"));
+    test(S("abcde"), 1, 1, "12345", 1, S("a1cde"));
+    test(S("abcde"), 1, 1, "12345", 2, S("a12cde"));
+    test(S("abcde"), 1, 1, "12345", 4, S("a1234cde"));
+    test(S("abcde"), 1, 1, "12345", 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, "1234567890", 0, S("acde"));
+    test(S("abcde"), 1, 1, "1234567890", 1, S("a1cde"));
+    test(S("abcde"), 1, 1, "1234567890", 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, "1234567890", 9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, "1234567890", 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 0, S("acde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 1, S("a1cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 19, S("a1234567890123456789cde"));
+    test(S("abcde"), 1, 1, "12345678901234567890", 20, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, "", 0, S("ade"));
+    test(S("abcde"), 1, 2, "12345", 0, S("ade"));
+    test(S("abcde"), 1, 2, "12345", 1, S("a1de"));
+    test(S("abcde"), 1, 2, "12345", 2, S("a12de"));
+    test(S("abcde"), 1, 2, "12345", 4, S("a1234de"));
+    test(S("abcde"), 1, 2, "12345", 5, S("a12345de"));
+    test(S("abcde"), 1, 2, "1234567890", 0, S("ade"));
+    test(S("abcde"), 1, 2, "1234567890", 1, S("a1de"));
+    test(S("abcde"), 1, 2, "1234567890", 5, S("a12345de"));
+    test(S("abcde"), 1, 2, "1234567890", 9, S("a123456789de"));
+    test(S("abcde"), 1, 2, "1234567890", 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 0, S("ade"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 1, S("a1de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 19, S("a1234567890123456789de"));
+    test(S("abcde"), 1, 2, "12345678901234567890", 20, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, "", 0, S("ae"));
+    test(S("abcde"), 1, 3, "12345", 0, S("ae"));
+    test(S("abcde"), 1, 3, "12345", 1, S("a1e"));
+    test(S("abcde"), 1, 3, "12345", 2, S("a12e"));
+    test(S("abcde"), 1, 3, "12345", 4, S("a1234e"));
+    test(S("abcde"), 1, 3, "12345", 5, S("a12345e"));
+    test(S("abcde"), 1, 3, "1234567890", 0, S("ae"));
+    test(S("abcde"), 1, 3, "1234567890", 1, S("a1e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcde"), 1, 3, "1234567890", 5, S("a12345e"));
+    test(S("abcde"), 1, 3, "1234567890", 9, S("a123456789e"));
+    test(S("abcde"), 1, 3, "1234567890", 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 0, S("ae"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 1, S("a1e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 19, S("a1234567890123456789e"));
+    test(S("abcde"), 1, 3, "12345678901234567890", 20, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, "", 0, S("a"));
+    test(S("abcde"), 1, 4, "12345", 0, S("a"));
+    test(S("abcde"), 1, 4, "12345", 1, S("a1"));
+    test(S("abcde"), 1, 4, "12345", 2, S("a12"));
+    test(S("abcde"), 1, 4, "12345", 4, S("a1234"));
+    test(S("abcde"), 1, 4, "12345", 5, S("a12345"));
+    test(S("abcde"), 1, 4, "1234567890", 0, S("a"));
+    test(S("abcde"), 1, 4, "1234567890", 1, S("a1"));
+    test(S("abcde"), 1, 4, "1234567890", 5, S("a12345"));
+    test(S("abcde"), 1, 4, "1234567890", 9, S("a123456789"));
+    test(S("abcde"), 1, 4, "1234567890", 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 0, S("a"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 1, S("a1"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 4, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, "", 0, S("a"));
+    test(S("abcde"), 1, 5, "12345", 0, S("a"));
+    test(S("abcde"), 1, 5, "12345", 1, S("a1"));
+    test(S("abcde"), 1, 5, "12345", 2, S("a12"));
+    test(S("abcde"), 1, 5, "12345", 4, S("a1234"));
+    test(S("abcde"), 1, 5, "12345", 5, S("a12345"));
+    test(S("abcde"), 1, 5, "1234567890", 0, S("a"));
+    test(S("abcde"), 1, 5, "1234567890", 1, S("a1"));
+    test(S("abcde"), 1, 5, "1234567890", 5, S("a12345"));
+    test(S("abcde"), 1, 5, "1234567890", 9, S("a123456789"));
+    test(S("abcde"), 1, 5, "1234567890", 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, "12345678901234567890", 0, S("a"));
+    test(S("abcde"), 1, 5, "12345678901234567890", 1, S("a1"));
+    test(S("abcde"), 1, 5, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 5, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, "", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "12345", 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, "12345", 2, S("ab12cde"));
+    test(S("abcde"), 2, 0, "12345", 4, S("ab1234cde"));
+    test(S("abcde"), 2, 0, "12345", 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "1234567890", 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, "1234567890", 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, "1234567890", 9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, "1234567890", 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 19, S("ab1234567890123456789cde"));
+    test(S("abcde"), 2, 0, "12345678901234567890", 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, "", 0, S("abde"));
+    test(S("abcde"), 2, 1, "12345", 0, S("abde"));
+    test(S("abcde"), 2, 1, "12345", 1, S("ab1de"));
+    test(S("abcde"), 2, 1, "12345", 2, S("ab12de"));
+    test(S("abcde"), 2, 1, "12345", 4, S("ab1234de"));
+    test(S("abcde"), 2, 1, "12345", 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, "1234567890", 0, S("abde"));
+    test(S("abcde"), 2, 1, "1234567890", 1, S("ab1de"));
+    test(S("abcde"), 2, 1, "1234567890", 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, "1234567890", 9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, "1234567890", 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 0, S("abde"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 1, S("ab1de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 19, S("ab1234567890123456789de"));
+    test(S("abcde"), 2, 1, "12345678901234567890", 20, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, "", 0, S("abe"));
+    test(S("abcde"), 2, 2, "12345", 0, S("abe"));
+    test(S("abcde"), 2, 2, "12345", 1, S("ab1e"));
+    test(S("abcde"), 2, 2, "12345", 2, S("ab12e"));
+    test(S("abcde"), 2, 2, "12345", 4, S("ab1234e"));
+    test(S("abcde"), 2, 2, "12345", 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, "1234567890", 0, S("abe"));
+    test(S("abcde"), 2, 2, "1234567890", 1, S("ab1e"));
+    test(S("abcde"), 2, 2, "1234567890", 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, "1234567890", 9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, "1234567890", 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 0, S("abe"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 1, S("ab1e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 19, S("ab1234567890123456789e"));
+    test(S("abcde"), 2, 2, "12345678901234567890", 20, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, "", 0, S("ab"));
+    test(S("abcde"), 2, 3, "12345", 0, S("ab"));
+    test(S("abcde"), 2, 3, "12345", 1, S("ab1"));
+    test(S("abcde"), 2, 3, "12345", 2, S("ab12"));
+    test(S("abcde"), 2, 3, "12345", 4, S("ab1234"));
+    test(S("abcde"), 2, 3, "12345", 5, S("ab12345"));
+    test(S("abcde"), 2, 3, "1234567890", 0, S("ab"));
+    test(S("abcde"), 2, 3, "1234567890", 1, S("ab1"));
+    test(S("abcde"), 2, 3, "1234567890", 5, S("ab12345"));
+    test(S("abcde"), 2, 3, "1234567890", 9, S("ab123456789"));
+    test(S("abcde"), 2, 3, "1234567890", 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 0, S("ab"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 2, 3, "12345678901234567890", 1, S("ab1"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 3, "12345678901234567890", 20, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, "", 0, S("ab"));
+    test(S("abcde"), 2, 4, "12345", 0, S("ab"));
+    test(S("abcde"), 2, 4, "12345", 1, S("ab1"));
+    test(S("abcde"), 2, 4, "12345", 2, S("ab12"));
+    test(S("abcde"), 2, 4, "12345", 4, S("ab1234"));
+    test(S("abcde"), 2, 4, "12345", 5, S("ab12345"));
+    test(S("abcde"), 2, 4, "1234567890", 0, S("ab"));
+    test(S("abcde"), 2, 4, "1234567890", 1, S("ab1"));
+    test(S("abcde"), 2, 4, "1234567890", 5, S("ab12345"));
+    test(S("abcde"), 2, 4, "1234567890", 9, S("ab123456789"));
+    test(S("abcde"), 2, 4, "1234567890", 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, "12345678901234567890", 0, S("ab"));
+    test(S("abcde"), 2, 4, "12345678901234567890", 1, S("ab1"));
+    test(S("abcde"), 2, 4, "12345678901234567890", 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, "12345678901234567890", 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 4, "12345678901234567890", 20, S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, "", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "12345", 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, "12345", 2, S("abcd12e"));
+    test(S("abcde"), 4, 0, "12345", 4, S("abcd1234e"));
+    test(S("abcde"), 4, 0, "12345", 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "1234567890", 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, "1234567890", 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, "1234567890", 9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, "1234567890", 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, 0, "12345678901234567890", 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, "", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "12345", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "12345", 1, S("abcd1"));
+    test(S("abcde"), 4, 1, "12345", 2, S("abcd12"));
+    test(S("abcde"), 4, 1, "12345", 4, S("abcd1234"));
+    test(S("abcde"), 4, 1, "12345", 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, "1234567890", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "1234567890", 1, S("abcd1"));
+    test(S("abcde"), 4, 1, "1234567890", 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, "1234567890", 9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, "1234567890", 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 0, S("abcd"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 1, S("abcd1"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 1, "12345678901234567890", 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, "", 0, S("abcd"));
+    test(S("abcde"), 4, 2, "12345", 0, S("abcd"));
+    test(S("abcde"), 4, 2, "12345", 1, S("abcd1"));
+    test(S("abcde"), 4, 2, "12345", 2, S("abcd12"));
+    test(S("abcde"), 4, 2, "12345", 4, S("abcd1234"));
+    test(S("abcde"), 4, 2, "12345", 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, "1234567890", 0, S("abcd"));
+    test(S("abcde"), 4, 2, "1234567890", 1, S("abcd1"));
+    test(S("abcde"), 4, 2, "1234567890", 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, "1234567890", 9, S("abcd123456789"));
+    test(S("abcde"), 4, 2, "1234567890", 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, "12345678901234567890", 0, S("abcd"));
+    test(S("abcde"), 4, 2, "12345678901234567890", 1, S("abcd1"));
+    test(S("abcde"), 4, 2, "12345678901234567890", 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, "12345678901234567890", 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 2, "12345678901234567890", 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, "", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "12345", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "12345", 1, S("abcde1"));
+    test(S("abcde"), 5, 0, "12345", 2, S("abcde12"));
+    test(S("abcde"), 5, 0, "12345", 4, S("abcde1234"));
+    test(S("abcde"), 5, 0, "12345", 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "1234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, 0, "1234567890", 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, "1234567890", 9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 0, "12345678901234567890", 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, "", 0, S("abcde"));
+    test(S("abcde"), 5, 1, "12345", 0, S("abcde"));
+    test(S("abcde"), 5, 1, "12345", 1, S("abcde1"));
+    test(S("abcde"), 5, 1, "12345", 2, S("abcde12"));
+    test(S("abcde"), 5, 1, "12345", 4, S("abcde1234"));
+    test(S("abcde"), 5, 1, "12345", 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, "1234567890", 0, S("abcde"));
+    test(S("abcde"), 5, 1, "1234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, 1, "1234567890", 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, "1234567890", 9, S("abcde123456789"));
+    test(S("abcde"), 5, 1, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, "12345678901234567890", 0, S("abcde"));
+    test(S("abcde"), 5, 1, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcde"), 5, 1, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 1, "12345678901234567890", 20, S("abcde12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 6, 0, "", 0, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345", 0, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345", 1, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345", 2, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345", 4, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345", 5, S("can't happen"));
+    test(S("abcde"), 6, 0, "1234567890", 0, S("can't happen"));
+    test(S("abcde"), 6, 0, "1234567890", 1, S("can't happen"));
+    test(S("abcde"), 6, 0, "1234567890", 5, S("can't happen"));
+    test(S("abcde"), 6, 0, "1234567890", 9, S("can't happen"));
+    test(S("abcde"), 6, 0, "1234567890", 10, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345678901234567890", 0, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345678901234567890", 1, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345678901234567890", 10, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345678901234567890", 19, S("can't happen"));
+    test(S("abcde"), 6, 0, "12345678901234567890", 20, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345", 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "1234567890", 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, "12345678901234567890", 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, "", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 2, S("12bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 4, S("1234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345", 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "1234567890", 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 19, S("1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, "12345678901234567890", 20, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, "", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 2, S("12fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 4, S("1234fghij"));
+    test(S("abcdefghij"), 0, 5, "12345", 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, "1234567890", 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 19, S("1234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, "12345678901234567890", 20, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, "", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "12345", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "12345", 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, "12345", 2, S("12j"));
+    test(S("abcdefghij"), 0, 9, "12345", 4, S("1234j"));
+    test(S("abcdefghij"), 0, 9, "12345", 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, "1234567890", 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 0, S("j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 19, S("1234567890123456789j"));
+    test(S("abcdefghij"), 0, 9, "12345678901234567890", 20, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, "", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "12345", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "12345", 1, S("1"));
+    test(S("abcdefghij"), 0, 10, "12345", 2, S("12"));
+    test(S("abcdefghij"), 0, 10, "12345", 4, S("1234"));
+    test(S("abcdefghij"), 0, 10, "12345", 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "1234567890", 1, S("1"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, "1234567890", 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 0, S(""));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 1, S("1"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 10, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, "", 0, S(""));
+    test(S("abcdefghij"), 0, 11, "12345", 0, S(""));
+    test(S("abcdefghij"), 0, 11, "12345", 1, S("1"));
+    test(S("abcdefghij"), 0, 11, "12345", 2, S("12"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcdefghij"), 0, 11, "12345", 4, S("1234"));
+    test(S("abcdefghij"), 0, 11, "12345", 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, "1234567890", 0, S(""));
+    test(S("abcdefghij"), 0, 11, "1234567890", 1, S("1"));
+    test(S("abcdefghij"), 0, 11, "1234567890", 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, "1234567890", 9, S("123456789"));
+    test(S("abcdefghij"), 0, 11, "1234567890", 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, "12345678901234567890", 0, S(""));
+    test(S("abcdefghij"), 0, 11, "12345678901234567890", 1, S("1"));
+    test(S("abcdefghij"), 0, 11, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 11, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345", 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "1234567890", 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, "12345678901234567890", 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, "", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 2, S("a12cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 4, S("a1234cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345", 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, "1234567890", 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 19, S("a1234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, "12345678901234567890", 20, S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 4, "", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 2, S("a12fghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 4, S("a1234fghij"));
+    test(S("abcdefghij"), 1, 4, "12345", 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, "1234567890", 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 19, S("a1234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, "12345678901234567890", 20, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, "", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345", 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, "12345", 2, S("a12j"));
+    test(S("abcdefghij"), 1, 8, "12345", 4, S("a1234j"));
+    test(S("abcdefghij"), 1, 8, "12345", 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, "1234567890", 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 19, S("a1234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, "12345678901234567890", 20, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, "", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "12345", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "12345", 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, "12345", 2, S("a12"));
+    test(S("abcdefghij"), 1, 9, "12345", 4, S("a1234"));
+    test(S("abcdefghij"), 1, 9, "12345", 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, "1234567890", 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 0, S("a"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 9, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, "", 0, S("a"));
+    test(S("abcdefghij"), 1, 10, "12345", 0, S("a"));
+    test(S("abcdefghij"), 1, 10, "12345", 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, "12345", 2, S("a12"));
+    test(S("abcdefghij"), 1, 10, "12345", 4, S("a1234"));
+    test(S("abcdefghij"), 1, 10, "12345", 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, "1234567890", 0, S("a"));
+    test(S("abcdefghij"), 1, 10, "1234567890", 1, S("a1"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcdefghij"), 1, 10, "1234567890", 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, "1234567890", 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 10, "1234567890", 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, "12345678901234567890", 0, S("a"));
+    test(S("abcdefghij"), 1, 10, "12345678901234567890", 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 10, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, 0, "12345", 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, "1234567890", 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, "12345678901234567890", 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, "", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 2, S("abcde12ghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 4, S("abcde1234ghij"));
+    test(S("abcdefghij"), 5, 1, "12345", 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, "1234567890", 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 19, S("abcde1234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, "12345678901234567890", 20, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, "", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345", 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, "12345", 2, S("abcde12hij"));
+    test(S("abcdefghij"), 5, 2, "12345", 4, S("abcde1234hij"));
+    test(S("abcdefghij"), 5, 2, "12345", 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, "1234567890", 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 19, S("abcde1234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, "12345678901234567890", 20, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, "", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345", 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, "12345", 2, S("abcde12j"));
+    test(S("abcdefghij"), 5, 4, "12345", 4, S("abcde1234j"));
+    test(S("abcdefghij"), 5, 4, "12345", 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 9, S("abcde123456789j"));
+    test(S("abcdefghij"), 5, 4, "1234567890", 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 19, S("abcde1234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, "12345678901234567890", 20, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, "", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, "12345", 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 5, "12345", 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 5, "12345", 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 5, "12345678901234567890", 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, "", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, "12345", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, "12345", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, "12345", 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 6, "12345", 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 6, "12345", 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, "1234567890", 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, "1234567890", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, "1234567890", 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, "1234567890", 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 6, "1234567890", 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, "12345678901234567890", 0, S("abcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcdefghij"), 5, 6, "12345678901234567890", 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, "12345678901234567890", 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, "12345678901234567890", 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 6, "12345678901234567890", 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, "12345", 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, 0, "12345", 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, 0, "12345", 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, "1234567890", 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, "12345678901234567890", 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, "", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, "12345", 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 1, "12345", 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 1, "12345", 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, "1234567890", 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 1, "12345678901234567890", 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, "", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, "12345", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, "12345", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, "12345", 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 2, "12345", 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 2, "12345", 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, "1234567890", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, "1234567890", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, "1234567890", 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, "1234567890", 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 2, "1234567890", 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, "12345678901234567890", 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, "12345678901234567890", 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, "12345678901234567890", 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, "12345678901234567890", 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 2, "12345678901234567890", 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 0, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 0, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 0, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, "", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 1, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 1, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 1, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 1, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 11, 0, "", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345", 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345", 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345", 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345", 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "1234567890", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "1234567890", 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "1234567890", 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "1234567890", 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "1234567890", 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345678901234567890", 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345678901234567890", 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345678901234567890", 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345678901234567890", 19, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, "12345678901234567890", 20, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345", 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "1234567890", 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, "12345678901234567890", 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 2, S("12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 4, S("1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345", 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "1234567890", 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 19, S("1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, "12345678901234567890", 20, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 2, S("12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 4, S("1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345", 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "1234567890", 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 19, S("1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, "12345678901234567890", 20, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 2, S("12t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 4, S("1234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345", 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "1234567890", 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 19, S("1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, "12345678901234567890", 20, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345", 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "1234567890", 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345", 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345", 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345", 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "1234567890", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "1234567890", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "1234567890", 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "1234567890", 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "1234567890", 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345678901234567890", 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345678901234567890", 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345678901234567890", 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345678901234567890", 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, "12345678901234567890", 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 2, S("a12bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345", 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "1234567890", 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, "12345678901234567890", 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 2, S("a12cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 4, S("a1234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345", 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "1234567890", 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 19, S("a1234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, "12345678901234567890", 20, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 2, S("a12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 4, S("a1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345", 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "1234567890", 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 19, S("a1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, "12345678901234567890", 20, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 2, S("a12t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 4, S("a1234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345", 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "1234567890", 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 19, S("a1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, "12345678901234567890", 20, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345", 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "1234567890", 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345", 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345", 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345", 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "1234567890", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "1234567890", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "1234567890", 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "1234567890", 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "1234567890", 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345678901234567890", 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345678901234567890", 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345678901234567890", 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345678901234567890", 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, "12345678901234567890", 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345", 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 1, S("abcdefghij1klmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "1234567890", 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, "12345678901234567890", 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 2, S("abcdefghij12lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 4, S("abcdefghij1234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345", 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "1234567890", 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 19, S("abcdefghij1234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, "12345678901234567890", 20, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 2, S("abcdefghij12pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 4, S("abcdefghij1234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345", 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "1234567890", 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 19, S("abcdefghij1234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, "12345678901234567890", 20, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 2, S("abcdefghij12t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 4, S("abcdefghij1234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345", 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "1234567890", 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 19, S("abcdefghij1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, "12345678901234567890", 20, S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345", 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345", 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345", 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "1234567890", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "1234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "1234567890", 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "1234567890", 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "1234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345678901234567890", 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345678901234567890", 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345678901234567890", 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345678901234567890", 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, "12345678901234567890", 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345", 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "1234567890", 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, "12345678901234567890", 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345", 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "1234567890", 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, "12345678901234567890", 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345", 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345", 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345", 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "1234567890", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "1234567890", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "1234567890", 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "1234567890", 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "1234567890", 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345678901234567890", 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345678901234567890", 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345678901234567890", 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345678901234567890", 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, "12345678901234567890", 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "1234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, "12345678901234567890", 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345", 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345", 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "1234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "1234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "1234567890", 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "1234567890", 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "1234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345678901234567890", 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345678901234567890", 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345678901234567890", 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345678901234567890", 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, "12345678901234567890", 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345", 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345", 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345", 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345", 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "1234567890", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "1234567890", 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "1234567890", 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "1234567890", 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "1234567890", 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345678901234567890", 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345678901234567890", 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345678901234567890", 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345678901234567890", 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, "12345678901234567890", 20, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+  test10<S>();
+  test11<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+  static_assert(test10<S>());
+  static_assert(test11<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_size_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_size_char.pass.cpp
new file mode 100644
index 0000000..f9257cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_size_char.pass.cpp
@@ -0,0 +1,394 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(size_type pos, size_type n1, size_type n2, charT c); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos, typename S::size_type n1,
+     typename S::size_type n2, typename S::value_type c,
+     S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos <= old_size)
+    {
+        s.replace(pos, n1, n2, c);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos);
+        typename S::size_type rlen = n2;
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos, n1, n2, c);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, 0, '2', S(""));
+    test(S(""), 0, 0, 5, '2', S("22222"));
+    test(S(""), 0, 0, 10, '2', S("2222222222"));
+    test(S(""), 0, 0, 20, '2', S("22222222222222222222"));
+    test(S(""), 0, 1, 0, '2', S(""));
+    test(S(""), 0, 1, 5, '2', S("22222"));
+    test(S(""), 0, 1, 10, '2', S("2222222222"));
+    test(S(""), 0, 1, 20, '2', S("22222222222222222222"));
+    test(S(""), 1, 0, 0, '2', S("can't happen"));
+    test(S(""), 1, 0, 5, '2', S("can't happen"));
+    test(S(""), 1, 0, 10, '2', S("can't happen"));
+    test(S(""), 1, 0, 20, '2', S("can't happen"));
+    test(S("abcde"), 0, 0, 0, '2', S("abcde"));
+    test(S("abcde"), 0, 0, 5, '2', S("22222abcde"));
+    test(S("abcde"), 0, 0, 10, '2', S("2222222222abcde"));
+    test(S("abcde"), 0, 0, 20, '2', S("22222222222222222222abcde"));
+    test(S("abcde"), 0, 1, 0, '2', S("bcde"));
+    test(S("abcde"), 0, 1, 5, '2', S("22222bcde"));
+    test(S("abcde"), 0, 1, 10, '2', S("2222222222bcde"));
+    test(S("abcde"), 0, 1, 20, '2', S("22222222222222222222bcde"));
+    test(S("abcde"), 0, 2, 0, '2', S("cde"));
+    test(S("abcde"), 0, 2, 5, '2', S("22222cde"));
+    test(S("abcde"), 0, 2, 10, '2', S("2222222222cde"));
+    test(S("abcde"), 0, 2, 20, '2', S("22222222222222222222cde"));
+    test(S("abcde"), 0, 4, 0, '2', S("e"));
+    test(S("abcde"), 0, 4, 5, '2', S("22222e"));
+    test(S("abcde"), 0, 4, 10, '2', S("2222222222e"));
+    test(S("abcde"), 0, 4, 20, '2', S("22222222222222222222e"));
+    test(S("abcde"), 0, 5, 0, '2', S(""));
+    test(S("abcde"), 0, 5, 5, '2', S("22222"));
+    test(S("abcde"), 0, 5, 10, '2', S("2222222222"));
+    test(S("abcde"), 0, 5, 20, '2', S("22222222222222222222"));
+    test(S("abcde"), 0, 6, 0, '2', S(""));
+    test(S("abcde"), 0, 6, 5, '2', S("22222"));
+    test(S("abcde"), 0, 6, 10, '2', S("2222222222"));
+    test(S("abcde"), 0, 6, 20, '2', S("22222222222222222222"));
+    test(S("abcde"), 1, 0, 0, '2', S("abcde"));
+    test(S("abcde"), 1, 0, 5, '2', S("a22222bcde"));
+    test(S("abcde"), 1, 0, 10, '2', S("a2222222222bcde"));
+    test(S("abcde"), 1, 0, 20, '2', S("a22222222222222222222bcde"));
+    test(S("abcde"), 1, 1, 0, '2', S("acde"));
+    test(S("abcde"), 1, 1, 5, '2', S("a22222cde"));
+    test(S("abcde"), 1, 1, 10, '2', S("a2222222222cde"));
+    test(S("abcde"), 1, 1, 20, '2', S("a22222222222222222222cde"));
+    test(S("abcde"), 1, 2, 0, '2', S("ade"));
+    test(S("abcde"), 1, 2, 5, '2', S("a22222de"));
+    test(S("abcde"), 1, 2, 10, '2', S("a2222222222de"));
+    test(S("abcde"), 1, 2, 20, '2', S("a22222222222222222222de"));
+    test(S("abcde"), 1, 3, 0, '2', S("ae"));
+    test(S("abcde"), 1, 3, 5, '2', S("a22222e"));
+    test(S("abcde"), 1, 3, 10, '2', S("a2222222222e"));
+    test(S("abcde"), 1, 3, 20, '2', S("a22222222222222222222e"));
+    test(S("abcde"), 1, 4, 0, '2', S("a"));
+    test(S("abcde"), 1, 4, 5, '2', S("a22222"));
+    test(S("abcde"), 1, 4, 10, '2', S("a2222222222"));
+    test(S("abcde"), 1, 4, 20, '2', S("a22222222222222222222"));
+    test(S("abcde"), 1, 5, 0, '2', S("a"));
+    test(S("abcde"), 1, 5, 5, '2', S("a22222"));
+    test(S("abcde"), 1, 5, 10, '2', S("a2222222222"));
+    test(S("abcde"), 1, 5, 20, '2', S("a22222222222222222222"));
+    test(S("abcde"), 2, 0, 0, '2', S("abcde"));
+    test(S("abcde"), 2, 0, 5, '2', S("ab22222cde"));
+    test(S("abcde"), 2, 0, 10, '2', S("ab2222222222cde"));
+    test(S("abcde"), 2, 0, 20, '2', S("ab22222222222222222222cde"));
+    test(S("abcde"), 2, 1, 0, '2', S("abde"));
+    test(S("abcde"), 2, 1, 5, '2', S("ab22222de"));
+    test(S("abcde"), 2, 1, 10, '2', S("ab2222222222de"));
+    test(S("abcde"), 2, 1, 20, '2', S("ab22222222222222222222de"));
+    test(S("abcde"), 2, 2, 0, '2', S("abe"));
+    test(S("abcde"), 2, 2, 5, '2', S("ab22222e"));
+    test(S("abcde"), 2, 2, 10, '2', S("ab2222222222e"));
+    test(S("abcde"), 2, 2, 20, '2', S("ab22222222222222222222e"));
+    test(S("abcde"), 2, 3, 0, '2', S("ab"));
+    test(S("abcde"), 2, 3, 5, '2', S("ab22222"));
+    test(S("abcde"), 2, 3, 10, '2', S("ab2222222222"));
+    test(S("abcde"), 2, 3, 20, '2', S("ab22222222222222222222"));
+    test(S("abcde"), 2, 4, 0, '2', S("ab"));
+    test(S("abcde"), 2, 4, 5, '2', S("ab22222"));
+    test(S("abcde"), 2, 4, 10, '2', S("ab2222222222"));
+    test(S("abcde"), 2, 4, 20, '2', S("ab22222222222222222222"));
+    test(S("abcde"), 4, 0, 0, '2', S("abcde"));
+    test(S("abcde"), 4, 0, 5, '2', S("abcd22222e"));
+    test(S("abcde"), 4, 0, 10, '2', S("abcd2222222222e"));
+    test(S("abcde"), 4, 0, 20, '2', S("abcd22222222222222222222e"));
+    test(S("abcde"), 4, 1, 0, '2', S("abcd"));
+    test(S("abcde"), 4, 1, 5, '2', S("abcd22222"));
+    test(S("abcde"), 4, 1, 10, '2', S("abcd2222222222"));
+    test(S("abcde"), 4, 1, 20, '2', S("abcd22222222222222222222"));
+    test(S("abcde"), 4, 2, 0, '2', S("abcd"));
+    test(S("abcde"), 4, 2, 5, '2', S("abcd22222"));
+    test(S("abcde"), 4, 2, 10, '2', S("abcd2222222222"));
+    test(S("abcde"), 4, 2, 20, '2', S("abcd22222222222222222222"));
+    test(S("abcde"), 5, 0, 0, '2', S("abcde"));
+    test(S("abcde"), 5, 0, 5, '2', S("abcde22222"));
+    test(S("abcde"), 5, 0, 10, '2', S("abcde2222222222"));
+    test(S("abcde"), 5, 0, 20, '2', S("abcde22222222222222222222"));
+    test(S("abcde"), 5, 1, 0, '2', S("abcde"));
+    test(S("abcde"), 5, 1, 5, '2', S("abcde22222"));
+    test(S("abcde"), 5, 1, 10, '2', S("abcde2222222222"));
+    test(S("abcde"), 5, 1, 20, '2', S("abcde22222222222222222222"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 6, 0, 0, '2', S("can't happen"));
+    test(S("abcde"), 6, 0, 5, '2', S("can't happen"));
+    test(S("abcde"), 6, 0, 10, '2', S("can't happen"));
+    test(S("abcde"), 6, 0, 20, '2', S("can't happen"));
+    test(S("abcdefghij"), 0, 0, 0, '2', S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, 5, '2', S("22222abcdefghij"));
+    test(S("abcdefghij"), 0, 0, 10, '2', S("2222222222abcdefghij"));
+    test(S("abcdefghij"), 0, 0, 20, '2', S("22222222222222222222abcdefghij"));
+    test(S("abcdefghij"), 0, 1, 0, '2', S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, 5, '2', S("22222bcdefghij"));
+    test(S("abcdefghij"), 0, 1, 10, '2', S("2222222222bcdefghij"));
+    test(S("abcdefghij"), 0, 1, 20, '2', S("22222222222222222222bcdefghij"));
+    test(S("abcdefghij"), 0, 5, 0, '2', S("fghij"));
+    test(S("abcdefghij"), 0, 5, 5, '2', S("22222fghij"));
+    test(S("abcdefghij"), 0, 5, 10, '2', S("2222222222fghij"));
+    test(S("abcdefghij"), 0, 5, 20, '2', S("22222222222222222222fghij"));
+    test(S("abcdefghij"), 0, 9, 0, '2', S("j"));
+    test(S("abcdefghij"), 0, 9, 5, '2', S("22222j"));
+    test(S("abcdefghij"), 0, 9, 10, '2', S("2222222222j"));
+    test(S("abcdefghij"), 0, 9, 20, '2', S("22222222222222222222j"));
+    test(S("abcdefghij"), 0, 10, 0, '2', S(""));
+    test(S("abcdefghij"), 0, 10, 5, '2', S("22222"));
+    test(S("abcdefghij"), 0, 10, 10, '2', S("2222222222"));
+    test(S("abcdefghij"), 0, 10, 20, '2', S("22222222222222222222"));
+    test(S("abcdefghij"), 0, 11, 0, '2', S(""));
+    test(S("abcdefghij"), 0, 11, 5, '2', S("22222"));
+    test(S("abcdefghij"), 0, 11, 10, '2', S("2222222222"));
+    test(S("abcdefghij"), 0, 11, 20, '2', S("22222222222222222222"));
+    test(S("abcdefghij"), 1, 0, 0, '2', S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, 5, '2', S("a22222bcdefghij"));
+    test(S("abcdefghij"), 1, 0, 10, '2', S("a2222222222bcdefghij"));
+    test(S("abcdefghij"), 1, 0, 20, '2', S("a22222222222222222222bcdefghij"));
+    test(S("abcdefghij"), 1, 1, 0, '2', S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, 5, '2', S("a22222cdefghij"));
+    test(S("abcdefghij"), 1, 1, 10, '2', S("a2222222222cdefghij"));
+    test(S("abcdefghij"), 1, 1, 20, '2', S("a22222222222222222222cdefghij"));
+    test(S("abcdefghij"), 1, 4, 0, '2', S("afghij"));
+    test(S("abcdefghij"), 1, 4, 5, '2', S("a22222fghij"));
+    test(S("abcdefghij"), 1, 4, 10, '2', S("a2222222222fghij"));
+    test(S("abcdefghij"), 1, 4, 20, '2', S("a22222222222222222222fghij"));
+    test(S("abcdefghij"), 1, 8, 0, '2', S("aj"));
+    test(S("abcdefghij"), 1, 8, 5, '2', S("a22222j"));
+    test(S("abcdefghij"), 1, 8, 10, '2', S("a2222222222j"));
+    test(S("abcdefghij"), 1, 8, 20, '2', S("a22222222222222222222j"));
+    test(S("abcdefghij"), 1, 9, 0, '2', S("a"));
+    test(S("abcdefghij"), 1, 9, 5, '2', S("a22222"));
+    test(S("abcdefghij"), 1, 9, 10, '2', S("a2222222222"));
+    test(S("abcdefghij"), 1, 9, 20, '2', S("a22222222222222222222"));
+    test(S("abcdefghij"), 1, 10, 0, '2', S("a"));
+    test(S("abcdefghij"), 1, 10, 5, '2', S("a22222"));
+    test(S("abcdefghij"), 1, 10, 10, '2', S("a2222222222"));
+    test(S("abcdefghij"), 1, 10, 20, '2', S("a22222222222222222222"));
+    test(S("abcdefghij"), 5, 0, 0, '2', S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, 5, '2', S("abcde22222fghij"));
+    test(S("abcdefghij"), 5, 0, 10, '2', S("abcde2222222222fghij"));
+    test(S("abcdefghij"), 5, 0, 20, '2', S("abcde22222222222222222222fghij"));
+    test(S("abcdefghij"), 5, 1, 0, '2', S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, 5, '2', S("abcde22222ghij"));
+    test(S("abcdefghij"), 5, 1, 10, '2', S("abcde2222222222ghij"));
+    test(S("abcdefghij"), 5, 1, 20, '2', S("abcde22222222222222222222ghij"));
+    test(S("abcdefghij"), 5, 2, 0, '2', S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, 5, '2', S("abcde22222hij"));
+    test(S("abcdefghij"), 5, 2, 10, '2', S("abcde2222222222hij"));
+    test(S("abcdefghij"), 5, 2, 20, '2', S("abcde22222222222222222222hij"));
+    test(S("abcdefghij"), 5, 4, 0, '2', S("abcdej"));
+    test(S("abcdefghij"), 5, 4, 5, '2', S("abcde22222j"));
+    test(S("abcdefghij"), 5, 4, 10, '2', S("abcde2222222222j"));
+    test(S("abcdefghij"), 5, 4, 20, '2', S("abcde22222222222222222222j"));
+    test(S("abcdefghij"), 5, 5, 0, '2', S("abcde"));
+    test(S("abcdefghij"), 5, 5, 5, '2', S("abcde22222"));
+    test(S("abcdefghij"), 5, 5, 10, '2', S("abcde2222222222"));
+    test(S("abcdefghij"), 5, 5, 20, '2', S("abcde22222222222222222222"));
+    test(S("abcdefghij"), 5, 6, 0, '2', S("abcde"));
+    test(S("abcdefghij"), 5, 6, 5, '2', S("abcde22222"));
+    test(S("abcdefghij"), 5, 6, 10, '2', S("abcde2222222222"));
+    test(S("abcdefghij"), 5, 6, 20, '2', S("abcde22222222222222222222"));
+    test(S("abcdefghij"), 9, 0, 0, '2', S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, 5, '2', S("abcdefghi22222j"));
+    test(S("abcdefghij"), 9, 0, 10, '2', S("abcdefghi2222222222j"));
+    test(S("abcdefghij"), 9, 0, 20, '2', S("abcdefghi22222222222222222222j"));
+    test(S("abcdefghij"), 9, 1, 0, '2', S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, 5, '2', S("abcdefghi22222"));
+    test(S("abcdefghij"), 9, 1, 10, '2', S("abcdefghi2222222222"));
+    test(S("abcdefghij"), 9, 1, 20, '2', S("abcdefghi22222222222222222222"));
+    test(S("abcdefghij"), 9, 2, 0, '2', S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, 5, '2', S("abcdefghi22222"));
+    test(S("abcdefghij"), 9, 2, 10, '2', S("abcdefghi2222222222"));
+    test(S("abcdefghij"), 9, 2, 20, '2', S("abcdefghi22222222222222222222"));
+    test(S("abcdefghij"), 10, 0, 0, '2', S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, 5, '2', S("abcdefghij22222"));
+    test(S("abcdefghij"), 10, 0, 10, '2', S("abcdefghij2222222222"));
+    test(S("abcdefghij"), 10, 0, 20, '2', S("abcdefghij22222222222222222222"));
+    test(S("abcdefghij"), 10, 1, 0, '2', S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, 5, '2', S("abcdefghij22222"));
+    test(S("abcdefghij"), 10, 1, 10, '2', S("abcdefghij2222222222"));
+    test(S("abcdefghij"), 10, 1, 20, '2', S("abcdefghij22222222222222222222"));
+    test(S("abcdefghij"), 11, 0, 0, '2', S("can't happen"));
+    test(S("abcdefghij"), 11, 0, 5, '2', S("can't happen"));
+    test(S("abcdefghij"), 11, 0, 10, '2', S("can't happen"));
+    test(S("abcdefghij"), 11, 0, 20, '2', S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, 0, '2', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 5, '2', S("22222abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 10, '2', S("2222222222abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, 20, '2', S("22222222222222222222abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 0, '2', S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 5, '2', S("22222bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 10, '2', S("2222222222bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, 20, '2', S("22222222222222222222bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 0, '2', S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 5, '2', S("22222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 10, '2', S("2222222222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, 20, '2', S("22222222222222222222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 0, '2', S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 5, '2', S("22222t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 10, '2', S("2222222222t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, 20, '2', S("22222222222222222222t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 0, '2', S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 5, '2', S("22222"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 10, '2', S("2222222222"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, 20, '2', S("22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, 0, '2', S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, 5, '2', S("22222"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, 10, '2', S("2222222222"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, 20, '2', S("22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 0, '2', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 5, '2', S("a22222bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 10, '2', S("a2222222222bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, 20, '2', S("a22222222222222222222bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 0, '2', S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 5, '2', S("a22222cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 10, '2', S("a2222222222cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, 20, '2', S("a22222222222222222222cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 0, '2', S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 5, '2', S("a22222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 10, '2', S("a2222222222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, 20, '2', S("a22222222222222222222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 0, '2', S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 5, '2', S("a22222t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 10, '2', S("a2222222222t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, 20, '2', S("a22222222222222222222t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 0, '2', S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 5, '2', S("a22222"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 10, '2', S("a2222222222"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, 20, '2', S("a22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, 0, '2', S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, 5, '2', S("a22222"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, 10, '2', S("a2222222222"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, 20, '2', S("a22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 0, '2', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 5, '2', S("abcdefghij22222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 10, '2', S("abcdefghij2222222222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, 20, '2', S("abcdefghij22222222222222222222klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 0, '2', S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 5, '2', S("abcdefghij22222lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 10, '2', S("abcdefghij2222222222lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, 20, '2', S("abcdefghij22222222222222222222lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 0, '2', S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 5, '2', S("abcdefghij22222pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 10, '2', S("abcdefghij2222222222pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, 20, '2', S("abcdefghij22222222222222222222pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 0, '2', S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 5, '2', S("abcdefghij22222t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 10, '2', S("abcdefghij2222222222t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, 20, '2', S("abcdefghij22222222222222222222t"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 0, '2', S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 5, '2', S("abcdefghij22222"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 10, '2', S("abcdefghij2222222222"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, 20, '2', S("abcdefghij22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, 0, '2', S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, 5, '2', S("abcdefghij22222"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, 10, '2', S("abcdefghij2222222222"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, 20, '2', S("abcdefghij22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 0, '2', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 5, '2', S("abcdefghijklmnopqrs22222t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 10, '2', S("abcdefghijklmnopqrs2222222222t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, 20, '2', S("abcdefghijklmnopqrs22222222222222222222t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 0, '2', S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 5, '2', S("abcdefghijklmnopqrs22222"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 10, '2', S("abcdefghijklmnopqrs2222222222"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, 20, '2', S("abcdefghijklmnopqrs22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, 0, '2', S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, 5, '2', S("abcdefghijklmnopqrs22222"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, 10, '2', S("abcdefghijklmnopqrs2222222222"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, 20, '2', S("abcdefghijklmnopqrs22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 0, '2', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 5, '2', S("abcdefghijklmnopqrst22222"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 10, '2', S("abcdefghijklmnopqrst2222222222"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, 20, '2', S("abcdefghijklmnopqrst22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, 0, '2', S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, 5, '2', S("abcdefghijklmnopqrst22222"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, 10, '2', S("abcdefghijklmnopqrst2222222222"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, 20, '2', S("abcdefghijklmnopqrst22222222222222222222"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, 0, '2', S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, 5, '2', S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, 10, '2', S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, 20, '2', S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp
new file mode 100644
index 0000000..3e98052
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string.pass.cpp
@@ -0,0 +1,401 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(size_type pos1, size_type n1, const basic_string<charT,traits,Allocator>& str); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, S str, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size)
+    {
+        s.replace(pos1, n1, str);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos1);
+        typename S::size_type rlen = str.size();
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos1, n1, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, S(""), S(""));
+    test(S(""), 0, 0, S("12345"), S("12345"));
+    test(S(""), 0, 0, S("1234567890"), S("1234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), S("12345678901234567890"));
+    test(S(""), 0, 1, S(""), S(""));
+    test(S(""), 0, 1, S("12345"), S("12345"));
+    test(S(""), 0, 1, S("1234567890"), S("1234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), S("12345678901234567890"));
+    test(S(""), 1, 0, S(""), S("can't happen"));
+    test(S(""), 1, 0, S("12345"), S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), S("can't happen"));
+    test(S("abcde"), 0, 0, S(""), S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), S("12345abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, S(""), S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), S("12345bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, S(""), S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), S("12345cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, S(""), S("e"));
+    test(S("abcde"), 0, 4, S("12345"), S("12345e"));
+    test(S("abcde"), 0, 4, S("1234567890"), S("1234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, S(""), S(""));
+    test(S("abcde"), 0, 5, S("12345"), S("12345"));
+    test(S("abcde"), 0, 5, S("1234567890"), S("1234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 0, 6, S(""), S(""));
+    test(S("abcde"), 0, 6, S("12345"), S("12345"));
+    test(S("abcde"), 0, 6, S("1234567890"), S("1234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 1, 0, S(""), S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), S("a12345bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, S(""), S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), S("a12345cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, S(""), S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), S("a12345de"));
+    test(S("abcde"), 1, 2, S("1234567890"), S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, S(""), S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), S("a12345e"));
+    test(S("abcde"), 1, 3, S("1234567890"), S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, S(""), S("a"));
+    test(S("abcde"), 1, 4, S("12345"), S("a12345"));
+    test(S("abcde"), 1, 4, S("1234567890"), S("a1234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, S(""), S("a"));
+    test(S("abcde"), 1, 5, S("12345"), S("a12345"));
+    test(S("abcde"), 1, 5, S("1234567890"), S("a1234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, S(""), S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), S("ab12345cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, S(""), S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), S("ab12345de"));
+    test(S("abcde"), 2, 1, S("1234567890"), S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, S(""), S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), S("ab12345e"));
+    test(S("abcde"), 2, 2, S("1234567890"), S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, S(""), S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), S("ab12345"));
+    test(S("abcde"), 2, 3, S("1234567890"), S("ab1234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, S(""), S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), S("ab12345"));
+    test(S("abcde"), 2, 4, S("1234567890"), S("ab1234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, S(""), S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), S("abcd12345e"));
+    test(S("abcde"), 4, 0, S("1234567890"), S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, S(""), S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), S("abcd12345"));
+    test(S("abcde"), 4, 1, S("1234567890"), S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, S(""), S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), S("abcd12345"));
+    test(S("abcde"), 4, 2, S("1234567890"), S("abcd1234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, S(""), S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), S("abcde12345"));
+    test(S("abcde"), 5, 0, S("1234567890"), S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, S(""), S("abcde"));
+    test(S("abcde"), 5, 1, S("12345"), S("abcde12345"));
+    test(S("abcde"), 5, 1, S("1234567890"), S("abcde1234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), S("abcde12345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 6, 0, S(""), S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), S("can't happen"));
+    test(S("abcdefghij"), 0, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, S(""), S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, S(""), S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, S(""), S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), S("12345j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, S(""), S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), S("12345"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, S(""), S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), S("12345"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), S("1234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, S(""), S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 4, S(""), S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, S(""), S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), S("a12345j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, S(""), S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), S("a12345"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, S(""), S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), S("a12345"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, S(""), S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, S(""), S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, S(""), S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, S(""), S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, S(""), S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, S(""), S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, S(""), S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, S(""), S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 11, 0, S(""), S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  {
+    test0<S>();
+    test1<S>();
+    test2<S>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S>());
+    static_assert(test1<S>());
+    static_assert(test2<S>());
+#endif
+  }
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " ";
+    s.replace(0, 1, {"abc", 1});
+    assert(s.size() == 1);
+    assert(s == "a");
+  }
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_size_size.pass.cpp
new file mode 100644
index 0000000..2c9a488
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_size_size.pass.cpp
@@ -0,0 +1,6101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(size_type pos1, size_type n1, const basic_string<charT,traits,Allocator>& str,
+//           size_type pos2, size_type n2=npos); // constexpr since C++20
+//  the "=npos" was added in C++14
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1,
+     S str, typename S::size_type pos2, typename S::size_type n2,
+     S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= str.size())
+    {
+        s.replace(pos1, n1, str, pos2, n2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos1);
+        typename S::size_type rlen = std::min(n2, str.size() - pos2);
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos1, n1, str, pos2, n2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > str.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_npos(S s, typename S::size_type pos1, typename S::size_type n1,
+     S str, typename S::size_type pos2,
+     S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size && pos2 <= str.size())
+    {
+        s.replace(pos1, n1, str, pos2);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos1);
+        typename S::size_type rlen = std::min(S::npos, str.size() - pos2);
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos1, n1, str, pos2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size || pos2 > str.size());
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, S(""), 0, 0, S(""));
+    test(S(""), 0, 0, S(""), 0, 1, S(""));
+    test(S(""), 0, 0, S(""), 1, 0, S("can't happen"));
+    test(S(""), 0, 0, S("12345"), 0, 0, S(""));
+    test(S(""), 0, 0, S("12345"), 0, 1, S("1"));
+    test(S(""), 0, 0, S("12345"), 0, 2, S("12"));
+    test(S(""), 0, 0, S("12345"), 0, 4, S("1234"));
+    test(S(""), 0, 0, S("12345"), 0, 5, S("12345"));
+    test(S(""), 0, 0, S("12345"), 0, 6, S("12345"));
+    test(S(""), 0, 0, S("12345"), 1, 0, S(""));
+    test(S(""), 0, 0, S("12345"), 1, 1, S("2"));
+    test(S(""), 0, 0, S("12345"), 1, 2, S("23"));
+    test(S(""), 0, 0, S("12345"), 1, 3, S("234"));
+    test(S(""), 0, 0, S("12345"), 1, 4, S("2345"));
+    test(S(""), 0, 0, S("12345"), 1, 5, S("2345"));
+    test(S(""), 0, 0, S("12345"), 2, 0, S(""));
+    test(S(""), 0, 0, S("12345"), 2, 1, S("3"));
+    test(S(""), 0, 0, S("12345"), 2, 2, S("34"));
+    test(S(""), 0, 0, S("12345"), 2, 3, S("345"));
+    test(S(""), 0, 0, S("12345"), 2, 4, S("345"));
+    test(S(""), 0, 0, S("12345"), 4, 0, S(""));
+    test(S(""), 0, 0, S("12345"), 4, 1, S("5"));
+    test(S(""), 0, 0, S("12345"), 4, 2, S("5"));
+    test(S(""), 0, 0, S("12345"), 5, 0, S(""));
+    test(S(""), 0, 0, S("12345"), 5, 1, S(""));
+    test(S(""), 0, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S(""), 0, 0, S("1234567890"), 0, 0, S(""));
+    test(S(""), 0, 0, S("1234567890"), 0, 1, S("1"));
+    test(S(""), 0, 0, S("1234567890"), 0, 5, S("12345"));
+    test(S(""), 0, 0, S("1234567890"), 0, 9, S("123456789"));
+    test(S(""), 0, 0, S("1234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 0, S("1234567890"), 0, 11, S("1234567890"));
+    test(S(""), 0, 0, S("1234567890"), 1, 0, S(""));
+    test(S(""), 0, 0, S("1234567890"), 1, 1, S("2"));
+    test(S(""), 0, 0, S("1234567890"), 1, 4, S("2345"));
+    test(S(""), 0, 0, S("1234567890"), 1, 8, S("23456789"));
+    test(S(""), 0, 0, S("1234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 0, S("1234567890"), 1, 10, S("234567890"));
+    test(S(""), 0, 0, S("1234567890"), 5, 0, S(""));
+    test(S(""), 0, 0, S("1234567890"), 5, 1, S("6"));
+    test(S(""), 0, 0, S("1234567890"), 5, 2, S("67"));
+    test(S(""), 0, 0, S("1234567890"), 5, 4, S("6789"));
+    test(S(""), 0, 0, S("1234567890"), 5, 5, S("67890"));
+    test(S(""), 0, 0, S("1234567890"), 5, 6, S("67890"));
+    test(S(""), 0, 0, S("1234567890"), 9, 0, S(""));
+    test(S(""), 0, 0, S("1234567890"), 9, 1, S("0"));
+    test(S(""), 0, 0, S("1234567890"), 9, 2, S("0"));
+    test(S(""), 0, 0, S("1234567890"), 10, 0, S(""));
+    test(S(""), 0, 0, S("1234567890"), 10, 1, S(""));
+    test(S(""), 0, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 0, 0, S("12345678901234567890"), 0, 0, S(""));
+    test(S(""), 0, 0, S("12345678901234567890"), 0, 1, S("1"));
+    test(S(""), 0, 0, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S(""), 0, 0, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 1, 0, S(""));
+    test(S(""), 0, 0, S("12345678901234567890"), 1, 1, S("2"));
+    test(S(""), 0, 0, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S(""), 0, 0, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 10, 0, S(""));
+    test(S(""), 0, 0, S("12345678901234567890"), 10, 1, S("1"));
+    test(S(""), 0, 0, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S(""), 0, 0, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S(""), 0, 0, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S(""), 0, 0, S("12345678901234567890"), 19, 0, S(""));
+    test(S(""), 0, 0, S("12345678901234567890"), 19, 1, S("0"));
+    test(S(""), 0, 0, S("12345678901234567890"), 19, 2, S("0"));
+    test(S(""), 0, 0, S("12345678901234567890"), 20, 0, S(""));
+    test(S(""), 0, 0, S("12345678901234567890"), 20, 1, S(""));
+    test(S(""), 0, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S(""), 0, 1, S(""), 0, 0, S(""));
+    test(S(""), 0, 1, S(""), 0, 1, S(""));
+    test(S(""), 0, 1, S(""), 1, 0, S("can't happen"));
+    test(S(""), 0, 1, S("12345"), 0, 0, S(""));
+    test(S(""), 0, 1, S("12345"), 0, 1, S("1"));
+    test(S(""), 0, 1, S("12345"), 0, 2, S("12"));
+    test(S(""), 0, 1, S("12345"), 0, 4, S("1234"));
+    test(S(""), 0, 1, S("12345"), 0, 5, S("12345"));
+    test(S(""), 0, 1, S("12345"), 0, 6, S("12345"));
+    test(S(""), 0, 1, S("12345"), 1, 0, S(""));
+    test(S(""), 0, 1, S("12345"), 1, 1, S("2"));
+    test(S(""), 0, 1, S("12345"), 1, 2, S("23"));
+    test(S(""), 0, 1, S("12345"), 1, 3, S("234"));
+    test(S(""), 0, 1, S("12345"), 1, 4, S("2345"));
+    test(S(""), 0, 1, S("12345"), 1, 5, S("2345"));
+    test(S(""), 0, 1, S("12345"), 2, 0, S(""));
+    test(S(""), 0, 1, S("12345"), 2, 1, S("3"));
+    test(S(""), 0, 1, S("12345"), 2, 2, S("34"));
+    test(S(""), 0, 1, S("12345"), 2, 3, S("345"));
+    test(S(""), 0, 1, S("12345"), 2, 4, S("345"));
+    test(S(""), 0, 1, S("12345"), 4, 0, S(""));
+    test(S(""), 0, 1, S("12345"), 4, 1, S("5"));
+    test(S(""), 0, 1, S("12345"), 4, 2, S("5"));
+    test(S(""), 0, 1, S("12345"), 5, 0, S(""));
+    test(S(""), 0, 1, S("12345"), 5, 1, S(""));
+    test(S(""), 0, 1, S("12345"), 6, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S(""), 0, 1, S("1234567890"), 0, 0, S(""));
+    test(S(""), 0, 1, S("1234567890"), 0, 1, S("1"));
+    test(S(""), 0, 1, S("1234567890"), 0, 5, S("12345"));
+    test(S(""), 0, 1, S("1234567890"), 0, 9, S("123456789"));
+    test(S(""), 0, 1, S("1234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 1, S("1234567890"), 0, 11, S("1234567890"));
+    test(S(""), 0, 1, S("1234567890"), 1, 0, S(""));
+    test(S(""), 0, 1, S("1234567890"), 1, 1, S("2"));
+    test(S(""), 0, 1, S("1234567890"), 1, 4, S("2345"));
+    test(S(""), 0, 1, S("1234567890"), 1, 8, S("23456789"));
+    test(S(""), 0, 1, S("1234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 1, S("1234567890"), 1, 10, S("234567890"));
+    test(S(""), 0, 1, S("1234567890"), 5, 0, S(""));
+    test(S(""), 0, 1, S("1234567890"), 5, 1, S("6"));
+    test(S(""), 0, 1, S("1234567890"), 5, 2, S("67"));
+    test(S(""), 0, 1, S("1234567890"), 5, 4, S("6789"));
+    test(S(""), 0, 1, S("1234567890"), 5, 5, S("67890"));
+    test(S(""), 0, 1, S("1234567890"), 5, 6, S("67890"));
+    test(S(""), 0, 1, S("1234567890"), 9, 0, S(""));
+    test(S(""), 0, 1, S("1234567890"), 9, 1, S("0"));
+    test(S(""), 0, 1, S("1234567890"), 9, 2, S("0"));
+    test(S(""), 0, 1, S("1234567890"), 10, 0, S(""));
+    test(S(""), 0, 1, S("1234567890"), 10, 1, S(""));
+    test(S(""), 0, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 0, 1, S("12345678901234567890"), 0, 0, S(""));
+    test(S(""), 0, 1, S("12345678901234567890"), 0, 1, S("1"));
+    test(S(""), 0, 1, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S(""), 0, 1, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 1, 0, S(""));
+    test(S(""), 0, 1, S("12345678901234567890"), 1, 1, S("2"));
+    test(S(""), 0, 1, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S(""), 0, 1, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 10, 0, S(""));
+    test(S(""), 0, 1, S("12345678901234567890"), 10, 1, S("1"));
+    test(S(""), 0, 1, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S(""), 0, 1, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S(""), 0, 1, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S(""), 0, 1, S("12345678901234567890"), 19, 0, S(""));
+    test(S(""), 0, 1, S("12345678901234567890"), 19, 1, S("0"));
+    test(S(""), 0, 1, S("12345678901234567890"), 19, 2, S("0"));
+    test(S(""), 0, 1, S("12345678901234567890"), 20, 0, S(""));
+    test(S(""), 0, 1, S("12345678901234567890"), 20, 1, S(""));
+    test(S(""), 0, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S(""), 1, 0, S(""), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, S(""), 0, 1, S("can't happen"));
+    test(S(""), 1, 0, S(""), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 0, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 0, 2, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 0, 4, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 0, 5, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 0, 6, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 1, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 1, 2, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 1, 3, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 1, 4, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 1, 5, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 2, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 2, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 2, 2, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 2, 3, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 2, 4, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 4, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 4, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 4, 2, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 5, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 5, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 0, 1, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 0, 5, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 0, 9, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 0, 11, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 1, 4, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 1, 8, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 1, 10, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 5, 0, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 5, 1, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 5, 2, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 5, 4, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 5, 5, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 5, 6, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 9, 0, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 9, 1, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 9, 2, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 0, 1, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S(""), 1, 0, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S(""), 1, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 0, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 0, 2, S("12abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 0, 4, S("1234abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 0, 6, S("12345abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 1, 2, S("23abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 1, 3, S("234abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 1, 5, S("2345abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 2, 1, S("3abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 2, 2, S("34abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 2, 3, S("345abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 2, 4, S("345abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 4, 1, S("5abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 4, 2, S("5abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 0, 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 0, 9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 0, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 1, 4, S("2345abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 1, 8, S("23456789abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 1, 10, S("234567890abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 5, 1, S("6abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 5, 2, S("67abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 5, 4, S("6789abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 5, 5, S("67890abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 5, 6, S("67890abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 9, 1, S("0abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 9, 2, S("0abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 0, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 0, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 0, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 1, 1, S("2abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 1, 9, S("234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 10, 1, S("1abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 10, 5, S("12345abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 10, 9, S("123456789abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 10, 10, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 10, 11, S("1234567890abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 19, 1, S("0abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 19, 2, S("0abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 0, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, S(""), 0, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S(""), 0, 1, S("bcde"));
+    test(S("abcde"), 0, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, S("12345"), 0, 0, S("bcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 0, 1, S("12345"), 0, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 0, 2, S("12bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 0, 4, S("1234bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 0, 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 0, 6, S("12345bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 1, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 1, 1, S("2bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 1, 2, S("23bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 1, 3, S("234bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 1, 4, S("2345bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 1, 5, S("2345bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 2, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 2, 1, S("3bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 2, 2, S("34bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 2, 3, S("345bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 2, 4, S("345bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 4, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 4, 1, S("5bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 4, 2, S("5bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 5, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 5, 1, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, S("1234567890"), 0, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 0, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 0, 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 0, 9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 0, 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 0, 11, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 1, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 1, 1, S("2bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 1, 4, S("2345bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 1, 8, S("23456789bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 1, 9, S("234567890bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 1, 10, S("234567890bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 5, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 5, 1, S("6bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 5, 2, S("67bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 5, 4, S("6789bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 5, 5, S("67890bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 5, 6, S("67890bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 9, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 9, 1, S("0bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 9, 2, S("0bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 10, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 10, 1, S("bcde"));
+    test(S("abcde"), 0, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 0, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 0, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 0, 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 0, 19, S("1234567890123456789bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 0, 20, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 0, 21, S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 1, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 1, 1, S("2bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 1, 9, S("234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 1, 18, S("234567890123456789bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 1, 19, S("2345678901234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 1, 20, S("2345678901234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 10, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 10, 1, S("1bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 10, 5, S("12345bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 10, 9, S("123456789bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 10, 10, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 10, 11, S("1234567890bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 19, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 19, 1, S("0bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 19, 2, S("0bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 20, 0, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 20, 1, S("bcde"));
+    test(S("abcde"), 0, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, S(""), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, S(""), 0, 1, S("cde"));
+    test(S("abcde"), 0, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, S("12345"), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), 0, 1, S("1cde"));
+    test(S("abcde"), 0, 2, S("12345"), 0, 2, S("12cde"));
+    test(S("abcde"), 0, 2, S("12345"), 0, 4, S("1234cde"));
+    test(S("abcde"), 0, 2, S("12345"), 0, 5, S("12345cde"));
+    test(S("abcde"), 0, 2, S("12345"), 0, 6, S("12345cde"));
+    test(S("abcde"), 0, 2, S("12345"), 1, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), 1, 1, S("2cde"));
+    test(S("abcde"), 0, 2, S("12345"), 1, 2, S("23cde"));
+    test(S("abcde"), 0, 2, S("12345"), 1, 3, S("234cde"));
+    test(S("abcde"), 0, 2, S("12345"), 1, 4, S("2345cde"));
+    test(S("abcde"), 0, 2, S("12345"), 1, 5, S("2345cde"));
+    test(S("abcde"), 0, 2, S("12345"), 2, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), 2, 1, S("3cde"));
+    test(S("abcde"), 0, 2, S("12345"), 2, 2, S("34cde"));
+    test(S("abcde"), 0, 2, S("12345"), 2, 3, S("345cde"));
+    test(S("abcde"), 0, 2, S("12345"), 2, 4, S("345cde"));
+    test(S("abcde"), 0, 2, S("12345"), 4, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), 4, 1, S("5cde"));
+    test(S("abcde"), 0, 2, S("12345"), 4, 2, S("5cde"));
+    test(S("abcde"), 0, 2, S("12345"), 5, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), 5, 1, S("cde"));
+    test(S("abcde"), 0, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, S("1234567890"), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 0, 1, S("1cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 0, 5, S("12345cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 0, 9, S("123456789cde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 0, 2, S("1234567890"), 0, 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 0, 11, S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 1, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 1, 1, S("2cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 1, 4, S("2345cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 1, 8, S("23456789cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 1, 9, S("234567890cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 1, 10, S("234567890cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 5, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 5, 1, S("6cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 5, 2, S("67cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 5, 4, S("6789cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 5, 5, S("67890cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 5, 6, S("67890cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 9, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 9, 1, S("0cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 9, 2, S("0cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 10, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 10, 1, S("cde"));
+    test(S("abcde"), 0, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 0, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 0, 1, S("1cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 0, 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 0, 19, S("1234567890123456789cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 0, 20, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 0, 21, S("12345678901234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 1, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 1, 1, S("2cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 1, 9, S("234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 1, 18, S("234567890123456789cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 1, 19, S("2345678901234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 1, 20, S("2345678901234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 10, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 10, 1, S("1cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 10, 5, S("12345cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 10, 9, S("123456789cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 10, 10, S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 10, 11, S("1234567890cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 19, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 19, 1, S("0cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 19, 2, S("0cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 20, 0, S("cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 20, 1, S("cde"));
+    test(S("abcde"), 0, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, S(""), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, S(""), 0, 1, S("e"));
+    test(S("abcde"), 0, 4, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, S("12345"), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345"), 0, 1, S("1e"));
+    test(S("abcde"), 0, 4, S("12345"), 0, 2, S("12e"));
+    test(S("abcde"), 0, 4, S("12345"), 0, 4, S("1234e"));
+    test(S("abcde"), 0, 4, S("12345"), 0, 5, S("12345e"));
+    test(S("abcde"), 0, 4, S("12345"), 0, 6, S("12345e"));
+    test(S("abcde"), 0, 4, S("12345"), 1, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345"), 1, 1, S("2e"));
+    test(S("abcde"), 0, 4, S("12345"), 1, 2, S("23e"));
+    test(S("abcde"), 0, 4, S("12345"), 1, 3, S("234e"));
+    test(S("abcde"), 0, 4, S("12345"), 1, 4, S("2345e"));
+    test(S("abcde"), 0, 4, S("12345"), 1, 5, S("2345e"));
+    test(S("abcde"), 0, 4, S("12345"), 2, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345"), 2, 1, S("3e"));
+    test(S("abcde"), 0, 4, S("12345"), 2, 2, S("34e"));
+    test(S("abcde"), 0, 4, S("12345"), 2, 3, S("345e"));
+    test(S("abcde"), 0, 4, S("12345"), 2, 4, S("345e"));
+    test(S("abcde"), 0, 4, S("12345"), 4, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345"), 4, 1, S("5e"));
+    test(S("abcde"), 0, 4, S("12345"), 4, 2, S("5e"));
+    test(S("abcde"), 0, 4, S("12345"), 5, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345"), 5, 1, S("e"));
+    test(S("abcde"), 0, 4, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, S("1234567890"), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 0, 1, S("1e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 0, 5, S("12345e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 0, 9, S("123456789e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 0, 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 0, 11, S("1234567890e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 1, 0, S("e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 1, 1, S("2e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 1, 4, S("2345e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 1, 8, S("23456789e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 1, 9, S("234567890e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 1, 10, S("234567890e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 5, 0, S("e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 5, 1, S("6e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 5, 2, S("67e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 5, 4, S("6789e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 5, 5, S("67890e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 5, 6, S("67890e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 9, 0, S("e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 9, 1, S("0e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 9, 2, S("0e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 10, 0, S("e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 10, 1, S("e"));
+    test(S("abcde"), 0, 4, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 0, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 0, 1, S("1e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 0, 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 0, 19, S("1234567890123456789e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 0, 20, S("12345678901234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 0, 21, S("12345678901234567890e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 1, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 1, 1, S("2e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 1, 9, S("234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 1, 18, S("234567890123456789e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 1, 19, S("2345678901234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 1, 20, S("2345678901234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 10, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 10, 1, S("1e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 10, 5, S("12345e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 10, 9, S("123456789e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 10, 10, S("1234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 10, 11, S("1234567890e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 19, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 19, 1, S("0e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 19, 2, S("0e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 20, 0, S("e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 20, 1, S("e"));
+    test(S("abcde"), 0, 4, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, S(""), 0, 0, S(""));
+    test(S("abcde"), 0, 5, S(""), 0, 1, S(""));
+    test(S("abcde"), 0, 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, S("12345"), 0, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345"), 0, 1, S("1"));
+    test(S("abcde"), 0, 5, S("12345"), 0, 2, S("12"));
+    test(S("abcde"), 0, 5, S("12345"), 0, 4, S("1234"));
+    test(S("abcde"), 0, 5, S("12345"), 0, 5, S("12345"));
+    test(S("abcde"), 0, 5, S("12345"), 0, 6, S("12345"));
+    test(S("abcde"), 0, 5, S("12345"), 1, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345"), 1, 1, S("2"));
+    test(S("abcde"), 0, 5, S("12345"), 1, 2, S("23"));
+    test(S("abcde"), 0, 5, S("12345"), 1, 3, S("234"));
+    test(S("abcde"), 0, 5, S("12345"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 5, S("12345"), 1, 5, S("2345"));
+    test(S("abcde"), 0, 5, S("12345"), 2, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345"), 2, 1, S("3"));
+    test(S("abcde"), 0, 5, S("12345"), 2, 2, S("34"));
+    test(S("abcde"), 0, 5, S("12345"), 2, 3, S("345"));
+    test(S("abcde"), 0, 5, S("12345"), 2, 4, S("345"));
+    test(S("abcde"), 0, 5, S("12345"), 4, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345"), 4, 1, S("5"));
+    test(S("abcde"), 0, 5, S("12345"), 4, 2, S("5"));
+    test(S("abcde"), 0, 5, S("12345"), 5, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345"), 5, 1, S(""));
+    test(S("abcde"), 0, 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, S("1234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 5, S("1234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 5, S("1234567890"), 0, 5, S("12345"));
+    test(S("abcde"), 0, 5, S("1234567890"), 0, 9, S("123456789"));
+    test(S("abcde"), 0, 5, S("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 5, S("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcde"), 0, 5, S("1234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 5, S("1234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 5, S("1234567890"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 5, S("1234567890"), 1, 8, S("23456789"));
+    test(S("abcde"), 0, 5, S("1234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 5, S("1234567890"), 1, 10, S("234567890"));
+    test(S("abcde"), 0, 5, S("1234567890"), 5, 0, S(""));
+    test(S("abcde"), 0, 5, S("1234567890"), 5, 1, S("6"));
+    test(S("abcde"), 0, 5, S("1234567890"), 5, 2, S("67"));
+    test(S("abcde"), 0, 5, S("1234567890"), 5, 4, S("6789"));
+    test(S("abcde"), 0, 5, S("1234567890"), 5, 5, S("67890"));
+    test(S("abcde"), 0, 5, S("1234567890"), 5, 6, S("67890"));
+    test(S("abcde"), 0, 5, S("1234567890"), 9, 0, S(""));
+    test(S("abcde"), 0, 5, S("1234567890"), 9, 1, S("0"));
+    test(S("abcde"), 0, 5, S("1234567890"), 9, 2, S("0"));
+    test(S("abcde"), 0, 5, S("1234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 5, S("1234567890"), 10, 1, S(""));
+    test(S("abcde"), 0, 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 19, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 20, 0, S(""));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 20, 1, S(""));
+    test(S("abcde"), 0, 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, S(""), 0, 0, S(""));
+    test(S("abcde"), 0, 6, S(""), 0, 1, S(""));
+    test(S("abcde"), 0, 6, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, S("12345"), 0, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345"), 0, 1, S("1"));
+    test(S("abcde"), 0, 6, S("12345"), 0, 2, S("12"));
+    test(S("abcde"), 0, 6, S("12345"), 0, 4, S("1234"));
+    test(S("abcde"), 0, 6, S("12345"), 0, 5, S("12345"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcde"), 0, 6, S("12345"), 0, 6, S("12345"));
+    test(S("abcde"), 0, 6, S("12345"), 1, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345"), 1, 1, S("2"));
+    test(S("abcde"), 0, 6, S("12345"), 1, 2, S("23"));
+    test(S("abcde"), 0, 6, S("12345"), 1, 3, S("234"));
+    test(S("abcde"), 0, 6, S("12345"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 6, S("12345"), 1, 5, S("2345"));
+    test(S("abcde"), 0, 6, S("12345"), 2, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345"), 2, 1, S("3"));
+    test(S("abcde"), 0, 6, S("12345"), 2, 2, S("34"));
+    test(S("abcde"), 0, 6, S("12345"), 2, 3, S("345"));
+    test(S("abcde"), 0, 6, S("12345"), 2, 4, S("345"));
+    test(S("abcde"), 0, 6, S("12345"), 4, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345"), 4, 1, S("5"));
+    test(S("abcde"), 0, 6, S("12345"), 4, 2, S("5"));
+    test(S("abcde"), 0, 6, S("12345"), 5, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345"), 5, 1, S(""));
+    test(S("abcde"), 0, 6, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, S("1234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 6, S("1234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 6, S("1234567890"), 0, 5, S("12345"));
+    test(S("abcde"), 0, 6, S("1234567890"), 0, 9, S("123456789"));
+    test(S("abcde"), 0, 6, S("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 6, S("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcde"), 0, 6, S("1234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 6, S("1234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 6, S("1234567890"), 1, 4, S("2345"));
+    test(S("abcde"), 0, 6, S("1234567890"), 1, 8, S("23456789"));
+    test(S("abcde"), 0, 6, S("1234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 6, S("1234567890"), 1, 10, S("234567890"));
+    test(S("abcde"), 0, 6, S("1234567890"), 5, 0, S(""));
+    test(S("abcde"), 0, 6, S("1234567890"), 5, 1, S("6"));
+    test(S("abcde"), 0, 6, S("1234567890"), 5, 2, S("67"));
+    test(S("abcde"), 0, 6, S("1234567890"), 5, 4, S("6789"));
+    test(S("abcde"), 0, 6, S("1234567890"), 5, 5, S("67890"));
+    test(S("abcde"), 0, 6, S("1234567890"), 5, 6, S("67890"));
+    test(S("abcde"), 0, 6, S("1234567890"), 9, 0, S(""));
+    test(S("abcde"), 0, 6, S("1234567890"), 9, 1, S("0"));
+    test(S("abcde"), 0, 6, S("1234567890"), 9, 2, S("0"));
+    test(S("abcde"), 0, 6, S("1234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 6, S("1234567890"), 10, 1, S(""));
+    test(S("abcde"), 0, 6, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 0, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 1, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 10, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 19, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 20, 0, S(""));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 20, 1, S(""));
+    test(S("abcde"), 0, 6, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 1, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 0, 2, S("a12bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 0, 4, S("a1234bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 0, 6, S("a12345bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 1, 2, S("a23bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 1, 3, S("a234bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 1, 5, S("a2345bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), 2, 1, S("a3bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 2, 2, S("a34bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 2, 3, S("a345bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 2, 4, S("a345bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), 4, 1, S("a5bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 4, 2, S("a5bcde"));
+    test(S("abcde"), 1, 0, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 0, 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 0, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 0, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 1, 1, S("a2bcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcde"), 1, 0, S("1234567890"), 1, 4, S("a2345bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 1, 8, S("a23456789bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 1, 10, S("a234567890bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 5, 1, S("a6bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 5, 2, S("a67bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 5, 4, S("a6789bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 5, 5, S("a67890bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 5, 6, S("a67890bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 9, 1, S("a0bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 9, 2, S("a0bcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 1, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 0, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 0, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 1, 1, S("a2bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 1, 9, S("a234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 1, 18, S("a234567890123456789bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 10, 1, S("a1bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 10, 5, S("a12345bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 10, 9, S("a123456789bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 10, 10, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 10, 11, S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 19, 1, S("a0bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 19, 2, S("a0bcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 1, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, S(""), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, S(""), 0, 1, S("acde"));
+    test(S("abcde"), 1, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, S("12345"), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), 0, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, S("12345"), 0, 2, S("a12cde"));
+    test(S("abcde"), 1, 1, S("12345"), 0, 4, S("a1234cde"));
+    test(S("abcde"), 1, 1, S("12345"), 0, 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, S("12345"), 0, 6, S("a12345cde"));
+    test(S("abcde"), 1, 1, S("12345"), 1, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), 1, 1, S("a2cde"));
+    test(S("abcde"), 1, 1, S("12345"), 1, 2, S("a23cde"));
+    test(S("abcde"), 1, 1, S("12345"), 1, 3, S("a234cde"));
+    test(S("abcde"), 1, 1, S("12345"), 1, 4, S("a2345cde"));
+    test(S("abcde"), 1, 1, S("12345"), 1, 5, S("a2345cde"));
+    test(S("abcde"), 1, 1, S("12345"), 2, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), 2, 1, S("a3cde"));
+    test(S("abcde"), 1, 1, S("12345"), 2, 2, S("a34cde"));
+    test(S("abcde"), 1, 1, S("12345"), 2, 3, S("a345cde"));
+    test(S("abcde"), 1, 1, S("12345"), 2, 4, S("a345cde"));
+    test(S("abcde"), 1, 1, S("12345"), 4, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), 4, 1, S("a5cde"));
+    test(S("abcde"), 1, 1, S("12345"), 4, 2, S("a5cde"));
+    test(S("abcde"), 1, 1, S("12345"), 5, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), 5, 1, S("acde"));
+    test(S("abcde"), 1, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, S("1234567890"), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 0, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 0, 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 0, 9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 0, 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 0, 11, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 1, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 1, 1, S("a2cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 1, 4, S("a2345cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 1, 8, S("a23456789cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 1, 9, S("a234567890cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 1, 10, S("a234567890cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 5, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 5, 1, S("a6cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 5, 2, S("a67cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 5, 4, S("a6789cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 5, 5, S("a67890cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 5, 6, S("a67890cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 9, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 9, 1, S("a0cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 9, 2, S("a0cde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 10, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 10, 1, S("acde"));
+    test(S("abcde"), 1, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 0, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 0, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 0, 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 1, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 1, 1, S("a2cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 1, 9, S("a234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 1, 18, S("a234567890123456789cde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 10, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 10, 1, S("a1cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 10, 5, S("a12345cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 10, 9, S("a123456789cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 10, 10, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 10, 11, S("a1234567890cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 19, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 19, 1, S("a0cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 19, 2, S("a0cde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 20, 0, S("acde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 20, 1, S("acde"));
+    test(S("abcde"), 1, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, S(""), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, S(""), 0, 1, S("ade"));
+    test(S("abcde"), 1, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, S("12345"), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), 0, 1, S("a1de"));
+    test(S("abcde"), 1, 2, S("12345"), 0, 2, S("a12de"));
+    test(S("abcde"), 1, 2, S("12345"), 0, 4, S("a1234de"));
+    test(S("abcde"), 1, 2, S("12345"), 0, 5, S("a12345de"));
+    test(S("abcde"), 1, 2, S("12345"), 0, 6, S("a12345de"));
+    test(S("abcde"), 1, 2, S("12345"), 1, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), 1, 1, S("a2de"));
+    test(S("abcde"), 1, 2, S("12345"), 1, 2, S("a23de"));
+    test(S("abcde"), 1, 2, S("12345"), 1, 3, S("a234de"));
+    test(S("abcde"), 1, 2, S("12345"), 1, 4, S("a2345de"));
+    test(S("abcde"), 1, 2, S("12345"), 1, 5, S("a2345de"));
+    test(S("abcde"), 1, 2, S("12345"), 2, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), 2, 1, S("a3de"));
+    test(S("abcde"), 1, 2, S("12345"), 2, 2, S("a34de"));
+    test(S("abcde"), 1, 2, S("12345"), 2, 3, S("a345de"));
+    test(S("abcde"), 1, 2, S("12345"), 2, 4, S("a345de"));
+    test(S("abcde"), 1, 2, S("12345"), 4, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), 4, 1, S("a5de"));
+    test(S("abcde"), 1, 2, S("12345"), 4, 2, S("a5de"));
+    test(S("abcde"), 1, 2, S("12345"), 5, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), 5, 1, S("ade"));
+    test(S("abcde"), 1, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, S("1234567890"), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("1234567890"), 0, 1, S("a1de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 0, 5, S("a12345de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 0, 9, S("a123456789de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 0, 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 0, 11, S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 1, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("1234567890"), 1, 1, S("a2de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 1, 4, S("a2345de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 1, 8, S("a23456789de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 1, 9, S("a234567890de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 1, 10, S("a234567890de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 5, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("1234567890"), 5, 1, S("a6de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 5, 2, S("a67de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 5, 4, S("a6789de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 5, 5, S("a67890de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 5, 6, S("a67890de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 9, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("1234567890"), 9, 1, S("a0de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 9, 2, S("a0de"));
+    test(S("abcde"), 1, 2, S("1234567890"), 10, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("1234567890"), 10, 1, S("ade"));
+    test(S("abcde"), 1, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 0, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 0, 1, S("a1de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 0, 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 0, 19, S("a1234567890123456789de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 0, 20, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 0, 21, S("a12345678901234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 1, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 1, 1, S("a2de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 1, 9, S("a234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 1, 18, S("a234567890123456789de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 1, 19, S("a2345678901234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 1, 20, S("a2345678901234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 10, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 10, 1, S("a1de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 10, 5, S("a12345de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 10, 9, S("a123456789de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 10, 10, S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 10, 11, S("a1234567890de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 19, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 19, 1, S("a0de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 19, 2, S("a0de"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 20, 0, S("ade"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 20, 1, S("ade"));
+    test(S("abcde"), 1, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, S(""), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, S(""), 0, 1, S("ae"));
+    test(S("abcde"), 1, 3, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, S("12345"), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), 0, 1, S("a1e"));
+    test(S("abcde"), 1, 3, S("12345"), 0, 2, S("a12e"));
+    test(S("abcde"), 1, 3, S("12345"), 0, 4, S("a1234e"));
+    test(S("abcde"), 1, 3, S("12345"), 0, 5, S("a12345e"));
+    test(S("abcde"), 1, 3, S("12345"), 0, 6, S("a12345e"));
+    test(S("abcde"), 1, 3, S("12345"), 1, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), 1, 1, S("a2e"));
+    test(S("abcde"), 1, 3, S("12345"), 1, 2, S("a23e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcde"), 1, 3, S("12345"), 1, 3, S("a234e"));
+    test(S("abcde"), 1, 3, S("12345"), 1, 4, S("a2345e"));
+    test(S("abcde"), 1, 3, S("12345"), 1, 5, S("a2345e"));
+    test(S("abcde"), 1, 3, S("12345"), 2, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), 2, 1, S("a3e"));
+    test(S("abcde"), 1, 3, S("12345"), 2, 2, S("a34e"));
+    test(S("abcde"), 1, 3, S("12345"), 2, 3, S("a345e"));
+    test(S("abcde"), 1, 3, S("12345"), 2, 4, S("a345e"));
+    test(S("abcde"), 1, 3, S("12345"), 4, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), 4, 1, S("a5e"));
+    test(S("abcde"), 1, 3, S("12345"), 4, 2, S("a5e"));
+    test(S("abcde"), 1, 3, S("12345"), 5, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), 5, 1, S("ae"));
+    test(S("abcde"), 1, 3, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, S("1234567890"), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("1234567890"), 0, 1, S("a1e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 0, 5, S("a12345e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 0, 9, S("a123456789e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 0, 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 0, 11, S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 1, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("1234567890"), 1, 1, S("a2e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 1, 4, S("a2345e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 1, 8, S("a23456789e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 1, 9, S("a234567890e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 1, 10, S("a234567890e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 5, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("1234567890"), 5, 1, S("a6e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 5, 2, S("a67e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 5, 4, S("a6789e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 5, 5, S("a67890e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 5, 6, S("a67890e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 9, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("1234567890"), 9, 1, S("a0e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 9, 2, S("a0e"));
+    test(S("abcde"), 1, 3, S("1234567890"), 10, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("1234567890"), 10, 1, S("ae"));
+    test(S("abcde"), 1, 3, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 0, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 0, 1, S("a1e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 0, 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 0, 19, S("a1234567890123456789e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 0, 20, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 0, 21, S("a12345678901234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 1, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 1, 1, S("a2e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 1, 9, S("a234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 1, 18, S("a234567890123456789e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 1, 19, S("a2345678901234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 1, 20, S("a2345678901234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 10, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 10, 1, S("a1e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 10, 5, S("a12345e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 10, 9, S("a123456789e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 10, 10, S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 10, 11, S("a1234567890e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 19, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 19, 1, S("a0e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 19, 2, S("a0e"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 20, 0, S("ae"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 20, 1, S("ae"));
+    test(S("abcde"), 1, 3, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, S(""), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, S(""), 0, 1, S("a"));
+    test(S("abcde"), 1, 4, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, S("12345"), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 4, S("12345"), 0, 2, S("a12"));
+    test(S("abcde"), 1, 4, S("12345"), 0, 4, S("a1234"));
+    test(S("abcde"), 1, 4, S("12345"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 4, S("12345"), 0, 6, S("a12345"));
+    test(S("abcde"), 1, 4, S("12345"), 1, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 4, S("12345"), 1, 2, S("a23"));
+    test(S("abcde"), 1, 4, S("12345"), 1, 3, S("a234"));
+    test(S("abcde"), 1, 4, S("12345"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 4, S("12345"), 1, 5, S("a2345"));
+    test(S("abcde"), 1, 4, S("12345"), 2, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345"), 2, 1, S("a3"));
+    test(S("abcde"), 1, 4, S("12345"), 2, 2, S("a34"));
+    test(S("abcde"), 1, 4, S("12345"), 2, 3, S("a345"));
+    test(S("abcde"), 1, 4, S("12345"), 2, 4, S("a345"));
+    test(S("abcde"), 1, 4, S("12345"), 4, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345"), 4, 1, S("a5"));
+    test(S("abcde"), 1, 4, S("12345"), 4, 2, S("a5"));
+    test(S("abcde"), 1, 4, S("12345"), 5, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345"), 5, 1, S("a"));
+    test(S("abcde"), 1, 4, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, S("1234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, S("1234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 4, S("1234567890"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 4, S("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcde"), 1, 4, S("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, S("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcde"), 1, 4, S("1234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 4, S("1234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 4, S("1234567890"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 4, S("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcde"), 1, 4, S("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 4, S("1234567890"), 1, 10, S("a234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcde"), 1, 4, S("1234567890"), 5, 0, S("a"));
+    test(S("abcde"), 1, 4, S("1234567890"), 5, 1, S("a6"));
+    test(S("abcde"), 1, 4, S("1234567890"), 5, 2, S("a67"));
+    test(S("abcde"), 1, 4, S("1234567890"), 5, 4, S("a6789"));
+    test(S("abcde"), 1, 4, S("1234567890"), 5, 5, S("a67890"));
+    test(S("abcde"), 1, 4, S("1234567890"), 5, 6, S("a67890"));
+    test(S("abcde"), 1, 4, S("1234567890"), 9, 0, S("a"));
+    test(S("abcde"), 1, 4, S("1234567890"), 9, 1, S("a0"));
+    test(S("abcde"), 1, 4, S("1234567890"), 9, 2, S("a0"));
+    test(S("abcde"), 1, 4, S("1234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 4, S("1234567890"), 10, 1, S("a"));
+    test(S("abcde"), 1, 4, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcde"), 1, 4, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, S(""), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, S(""), 0, 1, S("a"));
+    test(S("abcde"), 1, 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, S("12345"), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 5, S("12345"), 0, 2, S("a12"));
+    test(S("abcde"), 1, 5, S("12345"), 0, 4, S("a1234"));
+    test(S("abcde"), 1, 5, S("12345"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 5, S("12345"), 0, 6, S("a12345"));
+    test(S("abcde"), 1, 5, S("12345"), 1, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 5, S("12345"), 1, 2, S("a23"));
+    test(S("abcde"), 1, 5, S("12345"), 1, 3, S("a234"));
+    test(S("abcde"), 1, 5, S("12345"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 5, S("12345"), 1, 5, S("a2345"));
+    test(S("abcde"), 1, 5, S("12345"), 2, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345"), 2, 1, S("a3"));
+    test(S("abcde"), 1, 5, S("12345"), 2, 2, S("a34"));
+    test(S("abcde"), 1, 5, S("12345"), 2, 3, S("a345"));
+    test(S("abcde"), 1, 5, S("12345"), 2, 4, S("a345"));
+    test(S("abcde"), 1, 5, S("12345"), 4, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345"), 4, 1, S("a5"));
+    test(S("abcde"), 1, 5, S("12345"), 4, 2, S("a5"));
+    test(S("abcde"), 1, 5, S("12345"), 5, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345"), 5, 1, S("a"));
+    test(S("abcde"), 1, 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, S("1234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, S("1234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 5, S("1234567890"), 0, 5, S("a12345"));
+    test(S("abcde"), 1, 5, S("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcde"), 1, 5, S("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, S("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcde"), 1, 5, S("1234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 5, S("1234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 5, S("1234567890"), 1, 4, S("a2345"));
+    test(S("abcde"), 1, 5, S("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcde"), 1, 5, S("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 5, S("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcde"), 1, 5, S("1234567890"), 5, 0, S("a"));
+    test(S("abcde"), 1, 5, S("1234567890"), 5, 1, S("a6"));
+    test(S("abcde"), 1, 5, S("1234567890"), 5, 2, S("a67"));
+    test(S("abcde"), 1, 5, S("1234567890"), 5, 4, S("a6789"));
+    test(S("abcde"), 1, 5, S("1234567890"), 5, 5, S("a67890"));
+    test(S("abcde"), 1, 5, S("1234567890"), 5, 6, S("a67890"));
+    test(S("abcde"), 1, 5, S("1234567890"), 9, 0, S("a"));
+    test(S("abcde"), 1, 5, S("1234567890"), 9, 1, S("a0"));
+    test(S("abcde"), 1, 5, S("1234567890"), 9, 2, S("a0"));
+    test(S("abcde"), 1, 5, S("1234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 5, S("1234567890"), 10, 1, S("a"));
+    test(S("abcde"), 1, 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 10, 1, S("a1"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcde"), 1, 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 2, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, S("12345"), 0, 2, S("ab12cde"));
+    test(S("abcde"), 2, 0, S("12345"), 0, 4, S("ab1234cde"));
+    test(S("abcde"), 2, 0, S("12345"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, S("12345"), 0, 6, S("ab12345cde"));
+    test(S("abcde"), 2, 0, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, 0, S("12345"), 1, 2, S("ab23cde"));
+    test(S("abcde"), 2, 0, S("12345"), 1, 3, S("ab234cde"));
+    test(S("abcde"), 2, 0, S("12345"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, 0, S("12345"), 1, 5, S("ab2345cde"));
+    test(S("abcde"), 2, 0, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), 2, 1, S("ab3cde"));
+    test(S("abcde"), 2, 0, S("12345"), 2, 2, S("ab34cde"));
+    test(S("abcde"), 2, 0, S("12345"), 2, 3, S("ab345cde"));
+    test(S("abcde"), 2, 0, S("12345"), 2, 4, S("ab345cde"));
+    test(S("abcde"), 2, 0, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), 4, 1, S("ab5cde"));
+    test(S("abcde"), 2, 0, S("12345"), 4, 2, S("ab5cde"));
+    test(S("abcde"), 2, 0, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 0, 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 0, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 0, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 1, 4, S("ab2345cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 1, 8, S("ab23456789cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 1, 10, S("ab234567890cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 5, 1, S("ab6cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 5, 2, S("ab67cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 5, 4, S("ab6789cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 5, 5, S("ab67890cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 5, 6, S("ab67890cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 9, 1, S("ab0cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 9, 2, S("ab0cde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 2, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 0, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 0, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 0, 19, S("ab1234567890123456789cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 0, 20, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 0, 21, S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 1, 1, S("ab2cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 1, 9, S("ab234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 1, 18, S("ab234567890123456789cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 1, 19, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 1, 20, S("ab2345678901234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 10, 1, S("ab1cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 10, 5, S("ab12345cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 10, 9, S("ab123456789cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 10, 10, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 10, 11, S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 19, 1, S("ab0cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 19, 2, S("ab0cde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 2, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, S(""), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, S(""), 0, 1, S("abde"));
+    test(S("abcde"), 2, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, S("12345"), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), 0, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, S("12345"), 0, 2, S("ab12de"));
+    test(S("abcde"), 2, 1, S("12345"), 0, 4, S("ab1234de"));
+    test(S("abcde"), 2, 1, S("12345"), 0, 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, S("12345"), 0, 6, S("ab12345de"));
+    test(S("abcde"), 2, 1, S("12345"), 1, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), 1, 1, S("ab2de"));
+    test(S("abcde"), 2, 1, S("12345"), 1, 2, S("ab23de"));
+    test(S("abcde"), 2, 1, S("12345"), 1, 3, S("ab234de"));
+    test(S("abcde"), 2, 1, S("12345"), 1, 4, S("ab2345de"));
+    test(S("abcde"), 2, 1, S("12345"), 1, 5, S("ab2345de"));
+    test(S("abcde"), 2, 1, S("12345"), 2, 0, S("abde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test12()
+{
+    test(S("abcde"), 2, 1, S("12345"), 2, 1, S("ab3de"));
+    test(S("abcde"), 2, 1, S("12345"), 2, 2, S("ab34de"));
+    test(S("abcde"), 2, 1, S("12345"), 2, 3, S("ab345de"));
+    test(S("abcde"), 2, 1, S("12345"), 2, 4, S("ab345de"));
+    test(S("abcde"), 2, 1, S("12345"), 4, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), 4, 1, S("ab5de"));
+    test(S("abcde"), 2, 1, S("12345"), 4, 2, S("ab5de"));
+    test(S("abcde"), 2, 1, S("12345"), 5, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), 5, 1, S("abde"));
+    test(S("abcde"), 2, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, S("1234567890"), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("1234567890"), 0, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 0, 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 0, 9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 0, 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 0, 11, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 1, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("1234567890"), 1, 1, S("ab2de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 1, 4, S("ab2345de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 1, 8, S("ab23456789de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 1, 9, S("ab234567890de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 1, 10, S("ab234567890de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 5, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("1234567890"), 5, 1, S("ab6de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 5, 2, S("ab67de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 5, 4, S("ab6789de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 5, 5, S("ab67890de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 5, 6, S("ab67890de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 9, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("1234567890"), 9, 1, S("ab0de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 9, 2, S("ab0de"));
+    test(S("abcde"), 2, 1, S("1234567890"), 10, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("1234567890"), 10, 1, S("abde"));
+    test(S("abcde"), 2, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 0, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 0, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 0, 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 0, 19, S("ab1234567890123456789de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 0, 20, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 0, 21, S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 1, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 1, 1, S("ab2de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 1, 9, S("ab234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 1, 18, S("ab234567890123456789de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 1, 19, S("ab2345678901234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 1, 20, S("ab2345678901234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 10, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 10, 1, S("ab1de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 10, 5, S("ab12345de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 10, 9, S("ab123456789de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 10, 10, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 10, 11, S("ab1234567890de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 19, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 19, 1, S("ab0de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 19, 2, S("ab0de"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 20, 0, S("abde"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 20, 1, S("abde"));
+    test(S("abcde"), 2, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, S(""), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, S(""), 0, 1, S("abe"));
+    test(S("abcde"), 2, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, S("12345"), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), 0, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, S("12345"), 0, 2, S("ab12e"));
+    test(S("abcde"), 2, 2, S("12345"), 0, 4, S("ab1234e"));
+    test(S("abcde"), 2, 2, S("12345"), 0, 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, S("12345"), 0, 6, S("ab12345e"));
+    test(S("abcde"), 2, 2, S("12345"), 1, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), 1, 1, S("ab2e"));
+    test(S("abcde"), 2, 2, S("12345"), 1, 2, S("ab23e"));
+    test(S("abcde"), 2, 2, S("12345"), 1, 3, S("ab234e"));
+    test(S("abcde"), 2, 2, S("12345"), 1, 4, S("ab2345e"));
+    test(S("abcde"), 2, 2, S("12345"), 1, 5, S("ab2345e"));
+    test(S("abcde"), 2, 2, S("12345"), 2, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), 2, 1, S("ab3e"));
+    test(S("abcde"), 2, 2, S("12345"), 2, 2, S("ab34e"));
+    test(S("abcde"), 2, 2, S("12345"), 2, 3, S("ab345e"));
+    test(S("abcde"), 2, 2, S("12345"), 2, 4, S("ab345e"));
+    test(S("abcde"), 2, 2, S("12345"), 4, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), 4, 1, S("ab5e"));
+    test(S("abcde"), 2, 2, S("12345"), 4, 2, S("ab5e"));
+    test(S("abcde"), 2, 2, S("12345"), 5, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), 5, 1, S("abe"));
+    test(S("abcde"), 2, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, S("1234567890"), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("1234567890"), 0, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 0, 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 0, 9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 0, 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 0, 11, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 1, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("1234567890"), 1, 1, S("ab2e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 1, 4, S("ab2345e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 1, 8, S("ab23456789e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 1, 9, S("ab234567890e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 1, 10, S("ab234567890e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 5, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("1234567890"), 5, 1, S("ab6e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 5, 2, S("ab67e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 5, 4, S("ab6789e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test13()
+{
+    test(S("abcde"), 2, 2, S("1234567890"), 5, 5, S("ab67890e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 5, 6, S("ab67890e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 9, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("1234567890"), 9, 1, S("ab0e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 9, 2, S("ab0e"));
+    test(S("abcde"), 2, 2, S("1234567890"), 10, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("1234567890"), 10, 1, S("abe"));
+    test(S("abcde"), 2, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 0, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 0, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 0, 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 0, 19, S("ab1234567890123456789e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 0, 20, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 0, 21, S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 1, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 1, 1, S("ab2e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 1, 9, S("ab234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 1, 18, S("ab234567890123456789e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 1, 19, S("ab2345678901234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 1, 20, S("ab2345678901234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 10, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 10, 1, S("ab1e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 10, 5, S("ab12345e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 10, 9, S("ab123456789e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 10, 10, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 10, 11, S("ab1234567890e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 19, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 19, 1, S("ab0e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 19, 2, S("ab0e"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 20, 0, S("abe"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 20, 1, S("abe"));
+    test(S("abcde"), 2, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, S(""), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, S(""), 0, 1, S("ab"));
+    test(S("abcde"), 2, 3, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, S("12345"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 3, S("12345"), 0, 2, S("ab12"));
+    test(S("abcde"), 2, 3, S("12345"), 0, 4, S("ab1234"));
+    test(S("abcde"), 2, 3, S("12345"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 3, S("12345"), 0, 6, S("ab12345"));
+    test(S("abcde"), 2, 3, S("12345"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 3, S("12345"), 1, 2, S("ab23"));
+    test(S("abcde"), 2, 3, S("12345"), 1, 3, S("ab234"));
+    test(S("abcde"), 2, 3, S("12345"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 3, S("12345"), 1, 5, S("ab2345"));
+    test(S("abcde"), 2, 3, S("12345"), 2, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), 2, 1, S("ab3"));
+    test(S("abcde"), 2, 3, S("12345"), 2, 2, S("ab34"));
+    test(S("abcde"), 2, 3, S("12345"), 2, 3, S("ab345"));
+    test(S("abcde"), 2, 3, S("12345"), 2, 4, S("ab345"));
+    test(S("abcde"), 2, 3, S("12345"), 4, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), 4, 1, S("ab5"));
+    test(S("abcde"), 2, 3, S("12345"), 4, 2, S("ab5"));
+    test(S("abcde"), 2, 3, S("12345"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), 5, 1, S("ab"));
+    test(S("abcde"), 2, 3, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, S("1234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("1234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 3, S("1234567890"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 3, S("1234567890"), 0, 9, S("ab123456789"));
+    test(S("abcde"), 2, 3, S("1234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, S("1234567890"), 0, 11, S("ab1234567890"));
+    test(S("abcde"), 2, 3, S("1234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("1234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 3, S("1234567890"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 3, S("1234567890"), 1, 8, S("ab23456789"));
+    test(S("abcde"), 2, 3, S("1234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 3, S("1234567890"), 1, 10, S("ab234567890"));
+    test(S("abcde"), 2, 3, S("1234567890"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("1234567890"), 5, 1, S("ab6"));
+    test(S("abcde"), 2, 3, S("1234567890"), 5, 2, S("ab67"));
+    test(S("abcde"), 2, 3, S("1234567890"), 5, 4, S("ab6789"));
+    test(S("abcde"), 2, 3, S("1234567890"), 5, 5, S("ab67890"));
+    test(S("abcde"), 2, 3, S("1234567890"), 5, 6, S("ab67890"));
+    test(S("abcde"), 2, 3, S("1234567890"), 9, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("1234567890"), 9, 1, S("ab0"));
+    test(S("abcde"), 2, 3, S("1234567890"), 9, 2, S("ab0"));
+    test(S("abcde"), 2, 3, S("1234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("1234567890"), 10, 1, S("ab"));
+    test(S("abcde"), 2, 3, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 0, 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 0, 20, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 0, 21, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 1, 18, S("ab234567890123456789"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 1, 19, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 1, 20, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 10, 1, S("ab1"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 10, 5, S("ab12345"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 10, 9, S("ab123456789"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 10, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 10, 11, S("ab1234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test14()
+{
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 19, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 19, 1, S("ab0"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 19, 2, S("ab0"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 20, 0, S("ab"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 20, 1, S("ab"));
+    test(S("abcde"), 2, 3, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, S(""), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, S(""), 0, 1, S("ab"));
+    test(S("abcde"), 2, 4, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, S("12345"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 4, S("12345"), 0, 2, S("ab12"));
+    test(S("abcde"), 2, 4, S("12345"), 0, 4, S("ab1234"));
+    test(S("abcde"), 2, 4, S("12345"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 4, S("12345"), 0, 6, S("ab12345"));
+    test(S("abcde"), 2, 4, S("12345"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 4, S("12345"), 1, 2, S("ab23"));
+    test(S("abcde"), 2, 4, S("12345"), 1, 3, S("ab234"));
+    test(S("abcde"), 2, 4, S("12345"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 4, S("12345"), 1, 5, S("ab2345"));
+    test(S("abcde"), 2, 4, S("12345"), 2, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), 2, 1, S("ab3"));
+    test(S("abcde"), 2, 4, S("12345"), 2, 2, S("ab34"));
+    test(S("abcde"), 2, 4, S("12345"), 2, 3, S("ab345"));
+    test(S("abcde"), 2, 4, S("12345"), 2, 4, S("ab345"));
+    test(S("abcde"), 2, 4, S("12345"), 4, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), 4, 1, S("ab5"));
+    test(S("abcde"), 2, 4, S("12345"), 4, 2, S("ab5"));
+    test(S("abcde"), 2, 4, S("12345"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), 5, 1, S("ab"));
+    test(S("abcde"), 2, 4, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, S("1234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("1234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 4, S("1234567890"), 0, 5, S("ab12345"));
+    test(S("abcde"), 2, 4, S("1234567890"), 0, 9, S("ab123456789"));
+    test(S("abcde"), 2, 4, S("1234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, S("1234567890"), 0, 11, S("ab1234567890"));
+    test(S("abcde"), 2, 4, S("1234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("1234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 4, S("1234567890"), 1, 4, S("ab2345"));
+    test(S("abcde"), 2, 4, S("1234567890"), 1, 8, S("ab23456789"));
+    test(S("abcde"), 2, 4, S("1234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 4, S("1234567890"), 1, 10, S("ab234567890"));
+    test(S("abcde"), 2, 4, S("1234567890"), 5, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("1234567890"), 5, 1, S("ab6"));
+    test(S("abcde"), 2, 4, S("1234567890"), 5, 2, S("ab67"));
+    test(S("abcde"), 2, 4, S("1234567890"), 5, 4, S("ab6789"));
+    test(S("abcde"), 2, 4, S("1234567890"), 5, 5, S("ab67890"));
+    test(S("abcde"), 2, 4, S("1234567890"), 5, 6, S("ab67890"));
+    test(S("abcde"), 2, 4, S("1234567890"), 9, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("1234567890"), 9, 1, S("ab0"));
+    test(S("abcde"), 2, 4, S("1234567890"), 9, 2, S("ab0"));
+    test(S("abcde"), 2, 4, S("1234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("1234567890"), 10, 1, S("ab"));
+    test(S("abcde"), 2, 4, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 0, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 0, 1, S("ab1"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 0, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 0, 19, S("ab1234567890123456789"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 0, 20, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 0, 21, S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 1, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 1, 1, S("ab2"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 1, 9, S("ab234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 1, 18, S("ab234567890123456789"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 1, 19, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 1, 20, S("ab2345678901234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 10, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 10, 1, S("ab1"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 10, 5, S("ab12345"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 10, 9, S("ab123456789"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 10, 10, S("ab1234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 10, 11, S("ab1234567890"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 19, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 19, 1, S("ab0"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 19, 2, S("ab0"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 20, 0, S("ab"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 20, 1, S("ab"));
+    test(S("abcde"), 2, 4, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 4, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, S("12345"), 0, 2, S("abcd12e"));
+    test(S("abcde"), 4, 0, S("12345"), 0, 4, S("abcd1234e"));
+    test(S("abcde"), 4, 0, S("12345"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, S("12345"), 0, 6, S("abcd12345e"));
+    test(S("abcde"), 4, 0, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, 0, S("12345"), 1, 2, S("abcd23e"));
+    test(S("abcde"), 4, 0, S("12345"), 1, 3, S("abcd234e"));
+    test(S("abcde"), 4, 0, S("12345"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, 0, S("12345"), 1, 5, S("abcd2345e"));
+    test(S("abcde"), 4, 0, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), 2, 1, S("abcd3e"));
+    test(S("abcde"), 4, 0, S("12345"), 2, 2, S("abcd34e"));
+    test(S("abcde"), 4, 0, S("12345"), 2, 3, S("abcd345e"));
+    test(S("abcde"), 4, 0, S("12345"), 2, 4, S("abcd345e"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test15()
+{
+    test(S("abcde"), 4, 0, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), 4, 1, S("abcd5e"));
+    test(S("abcde"), 4, 0, S("12345"), 4, 2, S("abcd5e"));
+    test(S("abcde"), 4, 0, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("1234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 0, 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 0, 9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 0, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("1234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 1, 4, S("abcd2345e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 1, 8, S("abcd23456789e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 1, 10, S("abcd234567890e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("1234567890"), 5, 1, S("abcd6e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 5, 2, S("abcd67e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 5, 4, S("abcd6789e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 5, 5, S("abcd67890e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 5, 6, S("abcd67890e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("1234567890"), 9, 1, S("abcd0e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 9, 2, S("abcd0e"));
+    test(S("abcde"), 4, 0, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 4, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 0, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 0, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 0, 19, S("abcd1234567890123456789e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 0, 20, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 0, 21, S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 1, 1, S("abcd2e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 1, 9, S("abcd234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 1, 18, S("abcd234567890123456789e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 1, 19, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 1, 20, S("abcd2345678901234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 10, 1, S("abcd1e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 10, 5, S("abcd12345e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 10, 9, S("abcd123456789e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 10, 10, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 10, 11, S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 19, 1, S("abcd0e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 19, 2, S("abcd0e"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 4, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, S(""), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S(""), 0, 1, S("abcd"));
+    test(S("abcde"), 4, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, S("12345"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, S("12345"), 0, 2, S("abcd12"));
+    test(S("abcde"), 4, 1, S("12345"), 0, 4, S("abcd1234"));
+    test(S("abcde"), 4, 1, S("12345"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, S("12345"), 0, 6, S("abcd12345"));
+    test(S("abcde"), 4, 1, S("12345"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 1, S("12345"), 1, 2, S("abcd23"));
+    test(S("abcde"), 4, 1, S("12345"), 1, 3, S("abcd234"));
+    test(S("abcde"), 4, 1, S("12345"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 1, S("12345"), 1, 5, S("abcd2345"));
+    test(S("abcde"), 4, 1, S("12345"), 2, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), 2, 1, S("abcd3"));
+    test(S("abcde"), 4, 1, S("12345"), 2, 2, S("abcd34"));
+    test(S("abcde"), 4, 1, S("12345"), 2, 3, S("abcd345"));
+    test(S("abcde"), 4, 1, S("12345"), 2, 4, S("abcd345"));
+    test(S("abcde"), 4, 1, S("12345"), 4, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), 4, 1, S("abcd5"));
+    test(S("abcde"), 4, 1, S("12345"), 4, 2, S("abcd5"));
+    test(S("abcde"), 4, 1, S("12345"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), 5, 1, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, S("1234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("1234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, S("1234567890"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, S("1234567890"), 0, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, S("1234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("1234567890"), 0, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("1234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("1234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 1, S("1234567890"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 1, S("1234567890"), 1, 8, S("abcd23456789"));
+    test(S("abcde"), 4, 1, S("1234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 1, S("1234567890"), 1, 10, S("abcd234567890"));
+    test(S("abcde"), 4, 1, S("1234567890"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("1234567890"), 5, 1, S("abcd6"));
+    test(S("abcde"), 4, 1, S("1234567890"), 5, 2, S("abcd67"));
+    test(S("abcde"), 4, 1, S("1234567890"), 5, 4, S("abcd6789"));
+    test(S("abcde"), 4, 1, S("1234567890"), 5, 5, S("abcd67890"));
+    test(S("abcde"), 4, 1, S("1234567890"), 5, 6, S("abcd67890"));
+    test(S("abcde"), 4, 1, S("1234567890"), 9, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("1234567890"), 9, 1, S("abcd0"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test16()
+{
+    test(S("abcde"), 4, 1, S("1234567890"), 9, 2, S("abcd0"));
+    test(S("abcde"), 4, 1, S("1234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("1234567890"), 10, 1, S("abcd"));
+    test(S("abcde"), 4, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 0, 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 0, 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 0, 21, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 1, 18, S("abcd234567890123456789"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 1, 19, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 1, 20, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 10, 1, S("abcd1"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 10, 5, S("abcd12345"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 10, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 10, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 10, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 19, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 19, 1, S("abcd0"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 19, 2, S("abcd0"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 20, 0, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 20, 1, S("abcd"));
+    test(S("abcde"), 4, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, S(""), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S(""), 0, 1, S("abcd"));
+    test(S("abcde"), 4, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, S("12345"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, S("12345"), 0, 2, S("abcd12"));
+    test(S("abcde"), 4, 2, S("12345"), 0, 4, S("abcd1234"));
+    test(S("abcde"), 4, 2, S("12345"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, S("12345"), 0, 6, S("abcd12345"));
+    test(S("abcde"), 4, 2, S("12345"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 2, S("12345"), 1, 2, S("abcd23"));
+    test(S("abcde"), 4, 2, S("12345"), 1, 3, S("abcd234"));
+    test(S("abcde"), 4, 2, S("12345"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 2, S("12345"), 1, 5, S("abcd2345"));
+    test(S("abcde"), 4, 2, S("12345"), 2, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), 2, 1, S("abcd3"));
+    test(S("abcde"), 4, 2, S("12345"), 2, 2, S("abcd34"));
+    test(S("abcde"), 4, 2, S("12345"), 2, 3, S("abcd345"));
+    test(S("abcde"), 4, 2, S("12345"), 2, 4, S("abcd345"));
+    test(S("abcde"), 4, 2, S("12345"), 4, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), 4, 1, S("abcd5"));
+    test(S("abcde"), 4, 2, S("12345"), 4, 2, S("abcd5"));
+    test(S("abcde"), 4, 2, S("12345"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), 5, 1, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, S("1234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("1234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, S("1234567890"), 0, 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, S("1234567890"), 0, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 2, S("1234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, S("1234567890"), 0, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, S("1234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("1234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 2, S("1234567890"), 1, 4, S("abcd2345"));
+    test(S("abcde"), 4, 2, S("1234567890"), 1, 8, S("abcd23456789"));
+    test(S("abcde"), 4, 2, S("1234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 2, S("1234567890"), 1, 10, S("abcd234567890"));
+    test(S("abcde"), 4, 2, S("1234567890"), 5, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("1234567890"), 5, 1, S("abcd6"));
+    test(S("abcde"), 4, 2, S("1234567890"), 5, 2, S("abcd67"));
+    test(S("abcde"), 4, 2, S("1234567890"), 5, 4, S("abcd6789"));
+    test(S("abcde"), 4, 2, S("1234567890"), 5, 5, S("abcd67890"));
+    test(S("abcde"), 4, 2, S("1234567890"), 5, 6, S("abcd67890"));
+    test(S("abcde"), 4, 2, S("1234567890"), 9, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("1234567890"), 9, 1, S("abcd0"));
+    test(S("abcde"), 4, 2, S("1234567890"), 9, 2, S("abcd0"));
+    test(S("abcde"), 4, 2, S("1234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("1234567890"), 10, 1, S("abcd"));
+    test(S("abcde"), 4, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 0, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 0, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 0, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 0, 19, S("abcd1234567890123456789"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 0, 20, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 0, 21, S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 1, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 1, 1, S("abcd2"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 1, 9, S("abcd234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 1, 18, S("abcd234567890123456789"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 1, 19, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 1, 20, S("abcd2345678901234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 10, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 10, 1, S("abcd1"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 10, 5, S("abcd12345"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 10, 9, S("abcd123456789"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 10, 10, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 10, 11, S("abcd1234567890"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 19, 0, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 19, 1, S("abcd0"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 19, 2, S("abcd0"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 20, 0, S("abcd"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test17()
+{
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 20, 1, S("abcd"));
+    test(S("abcde"), 4, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 5, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, S("12345"), 0, 2, S("abcde12"));
+    test(S("abcde"), 5, 0, S("12345"), 0, 4, S("abcde1234"));
+    test(S("abcde"), 5, 0, S("12345"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, S("12345"), 0, 6, S("abcde12345"));
+    test(S("abcde"), 5, 0, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 0, S("12345"), 1, 2, S("abcde23"));
+    test(S("abcde"), 5, 0, S("12345"), 1, 3, S("abcde234"));
+    test(S("abcde"), 5, 0, S("12345"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 0, S("12345"), 1, 5, S("abcde2345"));
+    test(S("abcde"), 5, 0, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), 2, 1, S("abcde3"));
+    test(S("abcde"), 5, 0, S("12345"), 2, 2, S("abcde34"));
+    test(S("abcde"), 5, 0, S("12345"), 2, 3, S("abcde345"));
+    test(S("abcde"), 5, 0, S("12345"), 2, 4, S("abcde345"));
+    test(S("abcde"), 5, 0, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), 4, 1, S("abcde5"));
+    test(S("abcde"), 5, 0, S("12345"), 4, 2, S("abcde5"));
+    test(S("abcde"), 5, 0, S("12345"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, S("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, S("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, S("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 0, S("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 0, S("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcde"), 5, 0, S("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 0, S("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcde"), 5, 0, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcde"), 5, 0, S("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcde"), 5, 0, S("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcde"), 5, 0, S("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcde"), 5, 0, S("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcde"), 5, 0, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcde"), 5, 0, S("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcde"), 5, 0, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 5, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 5, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, S(""), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S(""), 0, 1, S("abcde"));
+    test(S("abcde"), 5, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, S("12345"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, S("12345"), 0, 2, S("abcde12"));
+    test(S("abcde"), 5, 1, S("12345"), 0, 4, S("abcde1234"));
+    test(S("abcde"), 5, 1, S("12345"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, S("12345"), 0, 6, S("abcde12345"));
+    test(S("abcde"), 5, 1, S("12345"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 1, S("12345"), 1, 2, S("abcde23"));
+    test(S("abcde"), 5, 1, S("12345"), 1, 3, S("abcde234"));
+    test(S("abcde"), 5, 1, S("12345"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 1, S("12345"), 1, 5, S("abcde2345"));
+    test(S("abcde"), 5, 1, S("12345"), 2, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345"), 2, 1, S("abcde3"));
+    test(S("abcde"), 5, 1, S("12345"), 2, 2, S("abcde34"));
+    test(S("abcde"), 5, 1, S("12345"), 2, 3, S("abcde345"));
+    test(S("abcde"), 5, 1, S("12345"), 2, 4, S("abcde345"));
+    test(S("abcde"), 5, 1, S("12345"), 4, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345"), 4, 1, S("abcde5"));
+    test(S("abcde"), 5, 1, S("12345"), 4, 2, S("abcde5"));
+    test(S("abcde"), 5, 1, S("12345"), 5, 0, S("abcde"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test18()
+{
+    test(S("abcde"), 5, 1, S("12345"), 5, 1, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, S("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, S("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 1, S("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, S("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 1, S("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcde"), 5, 1, S("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcde"), 5, 1, S("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 1, S("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcde"), 5, 1, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcde"), 5, 1, S("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcde"), 5, 1, S("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcde"), 5, 1, S("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcde"), 5, 1, S("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcde"), 5, 1, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcde"), 5, 1, S("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcde"), 5, 1, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcde"), 5, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcde"), 5, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S(""), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S(""), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 0, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 0, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 0, 6, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 1, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 1, 3, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 1, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 2, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 2, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 2, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 2, 3, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 2, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 4, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 4, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 4, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("1234567890"), 11, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test19()
+{
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcde"), 6, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 0, 2, S("12abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 0, 4, S("1234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 0, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 0, 6, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 1, 2, S("23abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 1, 3, S("234abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 1, 5, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 2, 1, S("3abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 2, 2, S("34abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 2, 3, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 2, 4, S("345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 4, 1, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 4, 2, S("5abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 0, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 0, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 0, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 1, 4, S("2345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 1, 8, S("23456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 1, 10, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 5, 1, S("6abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 5, 2, S("67abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 5, 4, S("6789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 5, 5, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 5, 6, S("67890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 9, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 9, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 0, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 0, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 1, 1, S("2abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 1, 9, S("234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 10, 1, S("1abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 10, 5, S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 10, 9, S("123456789abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 10, 10, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 10, 11, S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 19, 1, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 19, 2, S("0abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, S(""), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S(""), 0, 1, S("bcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test20()
+{
+    test(S("abcdefghij"), 0, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 0, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 0, 2, S("12bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 0, 4, S("1234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 0, 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 0, 6, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 1, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 1, 1, S("2bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 1, 2, S("23bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 1, 3, S("234bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 1, 4, S("2345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 1, 5, S("2345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 2, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 2, 1, S("3bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 2, 2, S("34bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 2, 3, S("345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 2, 4, S("345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 4, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 4, 1, S("5bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 4, 2, S("5bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 5, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 5, 1, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 0, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 0, 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 0, 9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 0, 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 0, 11, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 1, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 1, 1, S("2bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 1, 4, S("2345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 1, 8, S("23456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 1, 9, S("234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 1, 10, S("234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 5, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 5, 1, S("6bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 5, 2, S("67bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 5, 4, S("6789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 5, 5, S("67890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 5, 6, S("67890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 9, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 9, 1, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 9, 2, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 10, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 10, 1, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 0, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 0, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 0, 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 0, 19, S("1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 0, 20, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 0, 21, S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 1, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 1, 1, S("2bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 1, 9, S("234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 1, 18, S("234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 1, 19, S("2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 1, 20, S("2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 10, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 10, 1, S("1bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 10, 5, S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 10, 9, S("123456789bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 10, 10, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 10, 11, S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 19, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 19, 1, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 19, 2, S("0bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 20, 0, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 20, 1, S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, S(""), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S(""), 0, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 0, 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 0, 2, S("12fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 0, 4, S("1234fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 0, 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 0, 6, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 1, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 1, 1, S("2fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 1, 2, S("23fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 1, 3, S("234fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 1, 4, S("2345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 1, 5, S("2345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 2, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 2, 1, S("3fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 2, 2, S("34fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 2, 3, S("345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 2, 4, S("345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 4, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 4, 1, S("5fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 4, 2, S("5fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 5, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 5, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 0, 1, S("1fghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test21()
+{
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 0, 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 0, 9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 0, 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 0, 11, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 1, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 1, 1, S("2fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 1, 4, S("2345fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 1, 8, S("23456789fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 1, 9, S("234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 1, 10, S("234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 5, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 5, 1, S("6fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 5, 2, S("67fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 5, 4, S("6789fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 5, 5, S("67890fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 5, 6, S("67890fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 9, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 9, 1, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 9, 2, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 10, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 10, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 0, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 0, 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 0, 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 0, 19, S("1234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 0, 20, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 0, 21, S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 1, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 1, 1, S("2fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 1, 9, S("234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 1, 18, S("234567890123456789fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 1, 19, S("2345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 1, 20, S("2345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 10, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 10, 1, S("1fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 10, 5, S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 10, 9, S("123456789fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 10, 10, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 10, 11, S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 19, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 19, 1, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 19, 2, S("0fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 20, 0, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 20, 1, S("fghij"));
+    test(S("abcdefghij"), 0, 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, S(""), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S(""), 0, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 0, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 0, 2, S("12j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 0, 4, S("1234j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 0, 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 0, 6, S("12345j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 1, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 1, 1, S("2j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 1, 2, S("23j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 1, 3, S("234j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 1, 4, S("2345j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 1, 5, S("2345j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 2, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 2, 1, S("3j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 2, 2, S("34j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 2, 3, S("345j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 2, 4, S("345j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 4, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 4, 1, S("5j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 4, 2, S("5j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 5, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 5, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 0, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 0, 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 0, 9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 0, 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 0, 11, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 1, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 1, 1, S("2j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 1, 4, S("2345j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 1, 8, S("23456789j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 1, 9, S("234567890j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 1, 10, S("234567890j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 5, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 5, 1, S("6j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 5, 2, S("67j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 5, 4, S("6789j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 5, 5, S("67890j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 5, 6, S("67890j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 9, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 9, 1, S("0j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 9, 2, S("0j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 10, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 10, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 0, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 0, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 0, 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 0, 19, S("1234567890123456789j"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test22()
+{
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 0, 20, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 0, 21, S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 1, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 1, 1, S("2j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 1, 9, S("234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 1, 18, S("234567890123456789j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 1, 19, S("2345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 1, 20, S("2345678901234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 10, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 10, 1, S("1j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 10, 5, S("12345j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 10, 9, S("123456789j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 10, 10, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 10, 11, S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 19, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 19, 1, S("0j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 19, 2, S("0j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 20, 0, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 20, 1, S("j"));
+    test(S("abcdefghij"), 0, 9, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, S(""), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S(""), 0, 1, S(""));
+    test(S("abcdefghij"), 0, 10, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 0, 2, S("12"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 0, 4, S("1234"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 0, 6, S("12345"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 1, 2, S("23"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 1, 3, S("234"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 1, 5, S("2345"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 2, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), 2, 1, S("3"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 2, 2, S("34"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 2, 3, S("345"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 2, 4, S("345"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 4, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), 4, 1, S("5"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 4, 2, S("5"));
+    test(S("abcdefghij"), 0, 10, S("12345"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), 5, 1, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 0, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 9, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 10, 1, S(""));
+    test(S("abcdefghij"), 0, 10, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghij"), 0, 10, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, S(""), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S(""), 0, 1, S(""));
+    test(S("abcdefghij"), 0, 11, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 0, 2, S("12"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test23()
+{
+    test(S("abcdefghij"), 0, 11, S("12345"), 0, 4, S("1234"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 0, 6, S("12345"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 1, 2, S("23"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 1, 3, S("234"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 1, 5, S("2345"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 2, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), 2, 1, S("3"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 2, 2, S("34"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 2, 3, S("345"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 2, 4, S("345"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 4, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), 4, 1, S("5"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 4, 2, S("5"));
+    test(S("abcdefghij"), 0, 11, S("12345"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), 5, 1, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 0, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 5, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 9, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 10, 1, S(""));
+    test(S("abcdefghij"), 0, 11, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghij"), 0, 11, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 0, 2, S("a12bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 0, 4, S("a1234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 0, 6, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 1, 2, S("a23bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 1, 3, S("a234bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 1, 5, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 2, 1, S("a3bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 2, 2, S("a34bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 2, 3, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 2, 4, S("a345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 4, 1, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 4, 2, S("a5bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 0, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 0, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 0, 11, S("a1234567890bcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test24()
+{
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 1, 4, S("a2345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 1, 8, S("a23456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 1, 10, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 5, 1, S("a6bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 5, 2, S("a67bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 5, 4, S("a6789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 5, 5, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 5, 6, S("a67890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 9, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 9, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 0, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 0, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 1, 1, S("a2bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 1, 9, S("a234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 10, 1, S("a1bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 10, 5, S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 10, 9, S("a123456789bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 10, 10, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 10, 11, S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 19, 1, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 19, 2, S("a0bcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, S(""), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S(""), 0, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 0, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 0, 2, S("a12cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 0, 4, S("a1234cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 0, 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 0, 6, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 1, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 1, 1, S("a2cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 1, 2, S("a23cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 1, 3, S("a234cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 1, 4, S("a2345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 1, 5, S("a2345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 2, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 2, 1, S("a3cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 2, 2, S("a34cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 2, 3, S("a345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 2, 4, S("a345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 4, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 4, 1, S("a5cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 4, 2, S("a5cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 5, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 5, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 0, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 0, 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 0, 9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 0, 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 0, 11, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 1, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 1, 1, S("a2cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 1, 4, S("a2345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 1, 8, S("a23456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 1, 9, S("a234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 1, 10, S("a234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 5, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 5, 1, S("a6cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 5, 2, S("a67cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 5, 4, S("a6789cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 5, 5, S("a67890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 5, 6, S("a67890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 9, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 9, 1, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 9, 2, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 10, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 10, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 0, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 0, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 0, 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 1, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 1, 1, S("a2cdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test25()
+{
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 1, 9, S("a234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 1, 18, S("a234567890123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 10, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 10, 1, S("a1cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 10, 5, S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 10, 9, S("a123456789cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 10, 10, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 10, 11, S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 19, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 19, 1, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 19, 2, S("a0cdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 20, 0, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 20, 1, S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, S(""), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S(""), 0, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 0, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 0, 2, S("a12fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 0, 4, S("a1234fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 0, 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 0, 6, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 1, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 1, 1, S("a2fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 1, 2, S("a23fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 1, 3, S("a234fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 1, 4, S("a2345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 1, 5, S("a2345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 2, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 2, 1, S("a3fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 2, 2, S("a34fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 2, 3, S("a345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 2, 4, S("a345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 4, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 4, 1, S("a5fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 4, 2, S("a5fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 5, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 5, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 0, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 0, 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 0, 9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 0, 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 0, 11, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 1, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 1, 1, S("a2fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 1, 4, S("a2345fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 1, 8, S("a23456789fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 1, 9, S("a234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 1, 10, S("a234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 5, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 5, 1, S("a6fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 5, 2, S("a67fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 5, 4, S("a6789fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 5, 5, S("a67890fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 5, 6, S("a67890fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 9, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 9, 1, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 9, 2, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 10, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 10, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 0, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 0, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 0, 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 0, 19, S("a1234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 0, 20, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 0, 21, S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 1, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 1, 1, S("a2fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 1, 9, S("a234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 1, 18, S("a234567890123456789fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 1, 19, S("a2345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 1, 20, S("a2345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 10, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 10, 1, S("a1fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 10, 5, S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 10, 9, S("a123456789fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 10, 10, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 10, 11, S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 19, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 19, 1, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 19, 2, S("a0fghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 20, 0, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 20, 1, S("afghij"));
+    test(S("abcdefghij"), 1, 4, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, S(""), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S(""), 0, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 0, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 0, 2, S("a12j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 0, 4, S("a1234j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 0, 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 0, 6, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 1, 0, S("aj"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test26()
+{
+    test(S("abcdefghij"), 1, 8, S("12345"), 1, 1, S("a2j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 1, 2, S("a23j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 1, 3, S("a234j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 1, 4, S("a2345j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 1, 5, S("a2345j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 2, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 2, 1, S("a3j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 2, 2, S("a34j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 2, 3, S("a345j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 2, 4, S("a345j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 4, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 4, 1, S("a5j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 4, 2, S("a5j"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 5, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 5, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 0, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 0, 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 0, 9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 0, 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 0, 11, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 1, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 1, 1, S("a2j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 1, 4, S("a2345j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 1, 8, S("a23456789j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 1, 9, S("a234567890j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 1, 10, S("a234567890j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 5, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 5, 1, S("a6j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 5, 2, S("a67j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 5, 4, S("a6789j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 5, 5, S("a67890j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 5, 6, S("a67890j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 9, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 9, 1, S("a0j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 9, 2, S("a0j"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 10, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 10, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 0, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 0, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 0, 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 0, 19, S("a1234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 0, 20, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 0, 21, S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 1, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 1, 1, S("a2j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 1, 9, S("a234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 1, 18, S("a234567890123456789j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 1, 19, S("a2345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 1, 20, S("a2345678901234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 10, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 10, 1, S("a1j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 10, 5, S("a12345j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 10, 9, S("a123456789j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 10, 10, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 10, 11, S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 19, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 19, 1, S("a0j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 19, 2, S("a0j"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 20, 0, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 20, 1, S("aj"));
+    test(S("abcdefghij"), 1, 8, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, S(""), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S(""), 0, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 0, 2, S("a12"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 1, 2, S("a23"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 1, 3, S("a234"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 2, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 2, 1, S("a3"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 2, 2, S("a34"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 2, 3, S("a345"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 2, 4, S("a345"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 4, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 4, 1, S("a5"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 4, 2, S("a5"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 5, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 1, 8, S("a23456789"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test27()
+{
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghij"), 1, 9, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, S(""), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S(""), 0, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 0, 2, S("a12"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 1, 2, S("a23"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 1, 3, S("a234"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 2, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 2, 1, S("a3"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 2, 2, S("a34"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 2, 3, S("a345"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 2, 4, S("a345"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 4, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 4, 1, S("a5"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 4, 2, S("a5"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 5, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test28()
+{
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghij"), 1, 10, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 0, 2, S("abcde12fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 0, 4, S("abcde1234fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 0, 6, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 1, 2, S("abcde23fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 1, 3, S("abcde234fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 1, 5, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 2, 1, S("abcde3fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 2, 2, S("abcde34fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 2, 3, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 2, 4, S("abcde345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 4, 1, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 4, 2, S("abcde5fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 0, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 0, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 0, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 1, 4, S("abcde2345fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 1, 8, S("abcde23456789fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 1, 10, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 5, 1, S("abcde6fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 5, 2, S("abcde67fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 5, 4, S("abcde6789fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 5, 5, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 5, 6, S("abcde67890fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 9, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 9, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 0, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 0, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 1, 1, S("abcde2fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 1, 9, S("abcde234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 1, 18, S("abcde234567890123456789fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 10, 1, S("abcde1fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 10, 5, S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 10, 9, S("abcde123456789fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 10, 10, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 10, 11, S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 19, 1, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 19, 2, S("abcde0fghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, S(""), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S(""), 0, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 0, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 0, 2, S("abcde12ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 0, 4, S("abcde1234ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 0, 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 0, 6, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 1, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 1, 1, S("abcde2ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 1, 2, S("abcde23ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 1, 3, S("abcde234ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 1, 4, S("abcde2345ghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test29()
+{
+    test(S("abcdefghij"), 5, 1, S("12345"), 1, 5, S("abcde2345ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 2, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 2, 1, S("abcde3ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 2, 2, S("abcde34ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 2, 3, S("abcde345ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 2, 4, S("abcde345ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 4, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 4, 1, S("abcde5ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 4, 2, S("abcde5ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 5, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 5, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 0, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 0, 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 0, 9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 0, 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 0, 11, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 1, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 1, 1, S("abcde2ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 1, 4, S("abcde2345ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 1, 8, S("abcde23456789ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 1, 9, S("abcde234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 1, 10, S("abcde234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 5, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 5, 1, S("abcde6ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 5, 2, S("abcde67ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 5, 4, S("abcde6789ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 5, 5, S("abcde67890ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 5, 6, S("abcde67890ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 9, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 9, 1, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 9, 2, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 10, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 10, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 0, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 0, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 0, 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 1, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 1, 1, S("abcde2ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 1, 9, S("abcde234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 1, 18, S("abcde234567890123456789ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 10, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 10, 1, S("abcde1ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 10, 5, S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 10, 9, S("abcde123456789ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 10, 10, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 10, 11, S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 19, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 19, 1, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 19, 2, S("abcde0ghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 20, 0, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 20, 1, S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, S(""), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S(""), 0, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 0, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 0, 2, S("abcde12hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 0, 4, S("abcde1234hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 0, 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 0, 6, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 1, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 1, 1, S("abcde2hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 1, 2, S("abcde23hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 1, 3, S("abcde234hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 1, 4, S("abcde2345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 1, 5, S("abcde2345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 2, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 2, 1, S("abcde3hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 2, 2, S("abcde34hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 2, 3, S("abcde345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 2, 4, S("abcde345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 4, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 4, 1, S("abcde5hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 4, 2, S("abcde5hij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 5, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 5, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 0, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 0, 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 0, 9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 0, 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 0, 11, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 1, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 1, 1, S("abcde2hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 1, 4, S("abcde2345hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 1, 8, S("abcde23456789hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 1, 9, S("abcde234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 1, 10, S("abcde234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 5, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 5, 1, S("abcde6hij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test30()
+{
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 5, 2, S("abcde67hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 5, 4, S("abcde6789hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 5, 5, S("abcde67890hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 5, 6, S("abcde67890hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 9, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 9, 1, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 9, 2, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 10, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 10, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 0, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 0, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 0, 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 1, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 1, 1, S("abcde2hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 1, 9, S("abcde234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 1, 18, S("abcde234567890123456789hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 10, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 10, 1, S("abcde1hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 10, 5, S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 10, 9, S("abcde123456789hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 10, 10, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 10, 11, S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 19, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 19, 1, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 19, 2, S("abcde0hij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 20, 0, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 20, 1, S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, S(""), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S(""), 0, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 0, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 0, 2, S("abcde12j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 0, 4, S("abcde1234j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 0, 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 0, 6, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 1, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 1, 1, S("abcde2j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 1, 2, S("abcde23j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 1, 3, S("abcde234j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 1, 4, S("abcde2345j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 1, 5, S("abcde2345j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 2, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 2, 1, S("abcde3j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 2, 2, S("abcde34j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 2, 3, S("abcde345j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 2, 4, S("abcde345j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 4, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 4, 1, S("abcde5j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 4, 2, S("abcde5j"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 5, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 5, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 0, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 0, 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 0, 9, S("abcde123456789j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 0, 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 0, 11, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 1, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 1, 1, S("abcde2j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 1, 4, S("abcde2345j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 1, 8, S("abcde23456789j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 1, 9, S("abcde234567890j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 1, 10, S("abcde234567890j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 5, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 5, 1, S("abcde6j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 5, 2, S("abcde67j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 5, 4, S("abcde6789j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 5, 5, S("abcde67890j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 5, 6, S("abcde67890j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 9, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 9, 1, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 9, 2, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 10, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 10, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 0, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 0, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 0, 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 1, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 1, 1, S("abcde2j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 1, 9, S("abcde234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 1, 18, S("abcde234567890123456789j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 10, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 10, 1, S("abcde1j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 10, 5, S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 10, 9, S("abcde123456789j"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test31()
+{
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 10, 10, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 10, 11, S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 19, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 19, 1, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 19, 2, S("abcde0j"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 20, 0, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 20, 1, S("abcdej"));
+    test(S("abcdefghij"), 5, 4, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, S(""), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S(""), 0, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 0, 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 0, 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 0, 6, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 1, 2, S("abcde23"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 1, 3, S("abcde234"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 1, 5, S("abcde2345"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 2, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 2, 1, S("abcde3"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 2, 2, S("abcde34"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 2, 3, S("abcde345"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 2, 4, S("abcde345"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 4, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 4, 1, S("abcde5"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 4, 2, S("abcde5"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 5, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, S(""), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S(""), 0, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 0, 2, S("abcde12"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 0, 4, S("abcde1234"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 0, 6, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 1, 2, S("abcde23"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 1, 3, S("abcde234"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 1, 5, S("abcde2345"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 2, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 2, 1, S("abcde3"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 2, 2, S("abcde34"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test32()
+{
+    test(S("abcdefghij"), 5, 6, S("12345"), 2, 3, S("abcde345"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 2, 4, S("abcde345"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 4, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 4, 1, S("abcde5"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 4, 2, S("abcde5"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 5, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 0, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 0, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 0, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 1, 4, S("abcde2345"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 1, 8, S("abcde23456789"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 1, 10, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 5, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 5, 1, S("abcde6"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 5, 2, S("abcde67"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 5, 4, S("abcde6789"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 5, 5, S("abcde67890"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 5, 6, S("abcde67890"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 9, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 9, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 9, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 10, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 0, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 0, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 0, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 0, 19, S("abcde1234567890123456789"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 0, 20, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 0, 21, S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 1, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 1, 1, S("abcde2"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 1, 9, S("abcde234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 1, 18, S("abcde234567890123456789"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 1, 19, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 1, 20, S("abcde2345678901234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 10, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 10, 1, S("abcde1"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 10, 5, S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 10, 9, S("abcde123456789"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 10, 10, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 10, 11, S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 19, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 19, 1, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 19, 2, S("abcde0"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 20, 0, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 20, 1, S("abcde"));
+    test(S("abcdefghij"), 5, 6, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 0, 2, S("abcdefghi12j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 0, 4, S("abcdefghi1234j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 0, 6, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 1, 2, S("abcdefghi23j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 1, 3, S("abcdefghi234j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 1, 5, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 2, 1, S("abcdefghi3j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 2, 2, S("abcdefghi34j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 2, 3, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 2, 4, S("abcdefghi345j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 4, 1, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 4, 2, S("abcdefghi5j"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 0, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 0, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 0, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 1, 4, S("abcdefghi2345j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 1, 8, S("abcdefghi23456789j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 1, 10, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 5, 1, S("abcdefghi6j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 5, 2, S("abcdefghi67j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 5, 4, S("abcdefghi6789j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 5, 5, S("abcdefghi67890j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 5, 6, S("abcdefghi67890j"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test33()
+{
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 9, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 9, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 0, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 0, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 1, 1, S("abcdefghi2j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 1, 9, S("abcdefghi234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 10, 1, S("abcdefghi1j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 10, 5, S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 10, 9, S("abcdefghi123456789j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 10, 10, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 10, 11, S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 19, 1, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 19, 2, S("abcdefghi0j"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, S(""), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S(""), 0, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 0, 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 0, 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 0, 6, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 1, 2, S("abcdefghi23"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 1, 3, S("abcdefghi234"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 1, 5, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 2, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 2, 1, S("abcdefghi3"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 2, 2, S("abcdefghi34"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 2, 3, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 2, 4, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 4, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 4, 1, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 4, 2, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 5, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 0, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 0, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 1, 8, S("abcdefghi23456789"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 1, 10, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 5, 1, S("abcdefghi6"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 5, 2, S("abcdefghi67"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 5, 4, S("abcdefghi6789"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 5, 5, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 5, 6, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 9, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 9, 1, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 9, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 10, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 19, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 19, 1, S("abcdefghi0"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test34()
+{
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 19, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 20, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 20, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, S(""), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S(""), 0, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 0, 2, S("abcdefghi12"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 0, 4, S("abcdefghi1234"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 0, 6, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 1, 2, S("abcdefghi23"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 1, 3, S("abcdefghi234"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 1, 5, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 2, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 2, 1, S("abcdefghi3"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 2, 2, S("abcdefghi34"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 2, 3, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 2, 4, S("abcdefghi345"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 4, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 4, 1, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 4, 2, S("abcdefghi5"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 5, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 0, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 0, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 0, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 1, 4, S("abcdefghi2345"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 1, 8, S("abcdefghi23456789"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 1, 10, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 5, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 5, 1, S("abcdefghi6"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 5, 2, S("abcdefghi67"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 5, 4, S("abcdefghi6789"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 5, 5, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 5, 6, S("abcdefghi67890"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 9, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 9, 1, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 9, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 10, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 0, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 0, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 0, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 0, 19, S("abcdefghi1234567890123456789"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 0, 20, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 0, 21, S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 1, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 1, 1, S("abcdefghi2"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 1, 9, S("abcdefghi234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 1, 18, S("abcdefghi234567890123456789"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 1, 19, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 1, 20, S("abcdefghi2345678901234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 10, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 10, 1, S("abcdefghi1"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 10, 5, S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 10, 9, S("abcdefghi123456789"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 10, 10, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 10, 11, S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 19, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 19, 1, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 19, 2, S("abcdefghi0"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 20, 0, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 20, 1, S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 4, 1, S("abcdefghij5"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test35()
+{
+    test(S("abcdefghij"), 10, 0, S("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 10, 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test36()
+{
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S(""), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S(""), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghij"), 11, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test37()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 0, 2, S("12abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 0, 4, S("1234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 0, 6, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 1, 2, S("23abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 1, 3, S("234abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 1, 4, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 1, 5, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 2, 1, S("3abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 2, 2, S("34abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 2, 3, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 2, 4, S("345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 4, 1, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 4, 2, S("5abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 0, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 0, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 0, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 1, 4, S("2345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 1, 8, S("23456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 1, 10, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 5, 1, S("6abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 5, 2, S("67abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 5, 4, S("6789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 5, 5, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 5, 6, S("67890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 9, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 9, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 0, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 0, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 0, 19, S("1234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 0, 20, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 0, 21, S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 1, 1, S("2abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 1, 9, S("234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 1, 18, S("234567890123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 1, 19, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 1, 20, S("2345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 10, 1, S("1abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 10, 5, S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 10, 9, S("123456789abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 10, 10, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 10, 11, S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 19, 1, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 19, 2, S("0abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 0, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 0, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 0, 2, S("12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 0, 4, S("1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 0, 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 0, 6, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 1, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 1, 1, S("2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 1, 2, S("23bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 1, 3, S("234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 1, 4, S("2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 1, 5, S("2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 2, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 2, 1, S("3bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 2, 2, S("34bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 2, 3, S("345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 2, 4, S("345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 4, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 4, 1, S("5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 4, 2, S("5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 5, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 5, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345"), 6, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test38()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 0, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 0, 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 0, 9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 0, 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 0, 11, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 1, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 1, 1, S("2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 1, 4, S("2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 1, 8, S("23456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 1, 9, S("234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 1, 10, S("234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 5, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 5, 1, S("6bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 5, 2, S("67bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 5, 4, S("6789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 5, 5, S("67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 5, 6, S("67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 9, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 9, 1, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 9, 2, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 10, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 10, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 0, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 0, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 0, 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 0, 19, S("1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 0, 20, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 0, 21, S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 1, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 1, 1, S("2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 1, 9, S("234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 1, 18, S("234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 1, 19, S("2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 1, 20, S("2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 10, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 10, 1, S("1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 10, 5, S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 10, 9, S("123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 10, 10, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 10, 11, S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 19, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 19, 1, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 19, 2, S("0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 20, 0, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 20, 1, S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 0, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 0, 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 0, 2, S("12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 0, 4, S("1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 0, 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 0, 6, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 1, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 1, 1, S("2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 1, 2, S("23klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 1, 3, S("234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 1, 4, S("2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 1, 5, S("2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 2, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 2, 1, S("3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 2, 2, S("34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 2, 3, S("345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 2, 4, S("345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 4, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 4, 1, S("5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 4, 2, S("5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 5, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 5, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 0, 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 0, 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 0, 9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 0, 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 0, 11, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 1, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 1, 1, S("2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 1, 4, S("2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 1, 8, S("23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 1, 9, S("234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 1, 10, S("234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 5, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 5, 1, S("6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 5, 2, S("67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 5, 4, S("6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 5, 5, S("67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 5, 6, S("67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 9, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 9, 1, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 9, 2, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 10, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 10, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 0, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 0, 1, S("1klmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test39()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 0, 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 0, 19, S("1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 0, 20, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 0, 21, S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 1, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 1, 1, S("2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 1, 9, S("234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 1, 18, S("234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 1, 19, S("2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 1, 20, S("2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 10, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 10, 1, S("1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 10, 5, S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 10, 9, S("123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 10, 10, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 10, 11, S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 19, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 19, 1, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 19, 2, S("0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 20, 0, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 20, 1, S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 0, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 0, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 0, 2, S("12t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 0, 4, S("1234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 0, 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 0, 6, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 1, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 1, 1, S("2t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 1, 2, S("23t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 1, 3, S("234t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 1, 4, S("2345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 1, 5, S("2345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 2, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 2, 1, S("3t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 2, 2, S("34t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 2, 3, S("345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 2, 4, S("345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 4, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 4, 1, S("5t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 4, 2, S("5t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 5, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 5, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 0, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 0, 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 0, 9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 0, 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 0, 11, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 1, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 1, 1, S("2t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 1, 4, S("2345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 1, 8, S("23456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 1, 9, S("234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 1, 10, S("234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 5, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 5, 1, S("6t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 5, 2, S("67t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 5, 4, S("6789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 5, 5, S("67890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 5, 6, S("67890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 9, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 9, 1, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 9, 2, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 10, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 10, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 0, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 0, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 0, 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 0, 19, S("1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 0, 20, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 0, 21, S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 1, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 1, 1, S("2t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 1, 9, S("234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 1, 18, S("234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 1, 19, S("2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 1, 20, S("2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 10, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 10, 1, S("1t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 10, 5, S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 10, 9, S("123456789t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 10, 10, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 10, 11, S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 19, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 19, 1, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 19, 2, S("0t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 20, 0, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 20, 1, S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 0, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 0, 0, S(""));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test40()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 0, 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 0, 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 0, 6, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 1, 2, S("23"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 1, 3, S("234"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 1, 5, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 2, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 2, 1, S("3"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 2, 2, S("34"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 2, 3, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 2, 4, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 4, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 4, 1, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 4, 2, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 5, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 0, 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 9, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 10, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 0, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 0, 2, S("12"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 0, 4, S("1234"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 0, 6, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 1, 2, S("23"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 1, 3, S("234"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 1, 5, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 2, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 2, 1, S("3"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 2, 2, S("34"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 2, 3, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 2, 4, S("345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 4, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 4, 1, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 4, 2, S("5"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 5, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 0, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 0, 9, S("123456789"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test41()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 0, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 1, 4, S("2345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 1, 8, S("23456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 1, 10, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 5, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 5, 1, S("6"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 5, 2, S("67"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 5, 4, S("6789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 5, 5, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 5, 6, S("67890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 9, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 9, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 9, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 10, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 0, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 0, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 0, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 0, 19, S("1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 0, 20, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 0, 21, S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 1, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 1, 1, S("2"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 1, 9, S("234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 1, 18, S("234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 1, 19, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 1, 20, S("2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 10, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 10, 1, S("1"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 10, 5, S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 10, 9, S("123456789"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 10, 10, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 10, 11, S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 19, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 19, 1, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 19, 2, S("0"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 20, 0, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 20, 1, S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 0, 2, S("a12bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 0, 4, S("a1234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 0, 6, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 1, 2, S("a23bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 1, 3, S("a234bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 1, 5, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 2, 1, S("a3bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 2, 2, S("a34bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 2, 3, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 2, 4, S("a345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 4, 1, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 4, 2, S("a5bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 0, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 0, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 0, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 1, 4, S("a2345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 1, 8, S("a23456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 1, 10, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 5, 1, S("a6bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 5, 2, S("a67bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 5, 4, S("a6789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 5, 5, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 5, 6, S("a67890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 9, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 9, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 0, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 0, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 0, 19, S("a1234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 0, 20, S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 0, 21, S("a12345678901234567890bcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test42()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 1, 1, S("a2bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 1, 9, S("a234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 1, 18, S("a234567890123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 1, 19, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 1, 20, S("a2345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 10, 1, S("a1bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 10, 5, S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 10, 9, S("a123456789bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 10, 10, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 10, 11, S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 19, 1, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 19, 2, S("a0bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 0, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 0, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 0, 2, S("a12cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 0, 4, S("a1234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 0, 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 0, 6, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 1, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 1, 1, S("a2cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 1, 2, S("a23cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 1, 3, S("a234cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 1, 4, S("a2345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 1, 5, S("a2345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 2, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 2, 1, S("a3cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 2, 2, S("a34cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 2, 3, S("a345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 2, 4, S("a345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 4, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 4, 1, S("a5cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 4, 2, S("a5cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 5, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 5, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 0, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 0, 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 0, 9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 0, 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 0, 11, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 1, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 1, 1, S("a2cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 1, 4, S("a2345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 1, 8, S("a23456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 1, 9, S("a234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 1, 10, S("a234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 5, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 5, 1, S("a6cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 5, 2, S("a67cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 5, 4, S("a6789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 5, 5, S("a67890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 5, 6, S("a67890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 9, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 9, 1, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 9, 2, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 10, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 10, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 0, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 0, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 0, 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 0, 19, S("a1234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 0, 20, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 0, 21, S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 1, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 1, 1, S("a2cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 1, 9, S("a234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 1, 18, S("a234567890123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 1, 19, S("a2345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 1, 20, S("a2345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 10, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 10, 1, S("a1cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 10, 5, S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 10, 9, S("a123456789cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 10, 10, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 10, 11, S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 19, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 19, 1, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 19, 2, S("a0cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 20, 0, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 20, 1, S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 0, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 0, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 0, 2, S("a12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 0, 4, S("a1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 0, 5, S("a12345klmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test43()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 0, 6, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 1, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 1, 1, S("a2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 1, 2, S("a23klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 1, 3, S("a234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 1, 4, S("a2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 1, 5, S("a2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 2, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 2, 1, S("a3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 2, 2, S("a34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 2, 3, S("a345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 2, 4, S("a345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 4, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 4, 1, S("a5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 4, 2, S("a5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 5, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 5, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 0, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 0, 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 0, 9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 0, 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 0, 11, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 1, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 1, 1, S("a2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 1, 4, S("a2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 1, 8, S("a23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 1, 9, S("a234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 1, 10, S("a234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 5, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 5, 1, S("a6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 5, 2, S("a67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 5, 4, S("a6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 5, 5, S("a67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 5, 6, S("a67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 9, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 9, 1, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 9, 2, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 10, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 10, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 0, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 0, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 0, 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 0, 19, S("a1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 0, 20, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 0, 21, S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 1, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 1, 1, S("a2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 1, 9, S("a234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 1, 18, S("a234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 1, 19, S("a2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 1, 20, S("a2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 10, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 10, 1, S("a1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 10, 5, S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 10, 9, S("a123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 10, 10, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 10, 11, S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 19, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 19, 1, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 19, 2, S("a0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 20, 0, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 20, 1, S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 0, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 0, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 0, 2, S("a12t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 0, 4, S("a1234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 0, 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 0, 6, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 1, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 1, 1, S("a2t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 1, 2, S("a23t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 1, 3, S("a234t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 1, 4, S("a2345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 1, 5, S("a2345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 2, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 2, 1, S("a3t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 2, 2, S("a34t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 2, 3, S("a345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 2, 4, S("a345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 4, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 4, 1, S("a5t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 4, 2, S("a5t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 5, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 5, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 0, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 0, 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 0, 9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 0, 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 0, 11, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 1, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 1, 1, S("a2t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test44()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 1, 4, S("a2345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 1, 8, S("a23456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 1, 9, S("a234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 1, 10, S("a234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 5, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 5, 1, S("a6t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 5, 2, S("a67t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 5, 4, S("a6789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 5, 5, S("a67890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 5, 6, S("a67890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 9, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 9, 1, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 9, 2, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 10, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 10, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 0, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 0, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 0, 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 0, 19, S("a1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 0, 20, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 0, 21, S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 1, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 1, 1, S("a2t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 1, 9, S("a234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 1, 18, S("a234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 1, 19, S("a2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 1, 20, S("a2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 10, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 10, 1, S("a1t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 10, 5, S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 10, 9, S("a123456789t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 10, 10, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 10, 11, S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 19, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 19, 1, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 19, 2, S("a0t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 20, 0, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 20, 1, S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 0, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 0, 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 1, 2, S("a23"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 1, 3, S("a234"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 2, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 2, 1, S("a3"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 2, 2, S("a34"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 2, 3, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 2, 4, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 4, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 4, 1, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 4, 2, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 5, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 1, 18, S("a234567890123456789"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test45()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 0, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 0, 2, S("a12"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 0, 4, S("a1234"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 0, 6, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 1, 2, S("a23"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 1, 3, S("a234"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 1, 5, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 2, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 2, 1, S("a3"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 2, 2, S("a34"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 2, 3, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 2, 4, S("a345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 4, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 4, 1, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 4, 2, S("a5"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 5, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 0, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 0, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 0, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 1, 4, S("a2345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 1, 8, S("a23456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 1, 10, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 5, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 5, 1, S("a6"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 5, 2, S("a67"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 5, 4, S("a6789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 5, 5, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 5, 6, S("a67890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 9, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 9, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 9, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 10, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 0, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 0, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 0, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 0, 19, S("a1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 0, 20, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 0, 21, S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 1, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 1, 1, S("a2"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 1, 9, S("a234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 1, 18, S("a234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 1, 19, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 1, 20, S("a2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 10, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 10, 1, S("a1"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 10, 5, S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 10, 9, S("a123456789"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 10, 10, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 10, 11, S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 19, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 19, 1, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 19, 2, S("a0"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 20, 0, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 20, 1, S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 0, 2, S("abcdefghij12klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 0, 4, S("abcdefghij1234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 0, 6, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 1, 2, S("abcdefghij23klmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test46()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 1, 3, S("abcdefghij234klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 1, 5, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 2, 1, S("abcdefghij3klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 2, 2, S("abcdefghij34klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 2, 3, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 2, 4, S("abcdefghij345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 4, 1, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 4, 2, S("abcdefghij5klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 0, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 0, 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 0, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 1, 4, S("abcdefghij2345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 1, 8, S("abcdefghij23456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 1, 10, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 5, 1, S("abcdefghij6klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 5, 2, S("abcdefghij67klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 5, 4, S("abcdefghij6789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 5, 5, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 5, 6, S("abcdefghij67890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 9, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 9, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 0, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 1, 1, S("abcdefghij2klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 1, 9, S("abcdefghij234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 10, 1, S("abcdefghij1klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 10, 5, S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 10, 9, S("abcdefghij123456789klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 19, 1, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 19, 2, S("abcdefghij0klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 0, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 0, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 0, 2, S("abcdefghij12lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 0, 4, S("abcdefghij1234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 0, 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 0, 6, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 1, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 1, 1, S("abcdefghij2lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 1, 2, S("abcdefghij23lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 1, 3, S("abcdefghij234lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 1, 4, S("abcdefghij2345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 1, 5, S("abcdefghij2345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 2, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 2, 1, S("abcdefghij3lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 2, 2, S("abcdefghij34lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 2, 3, S("abcdefghij345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 2, 4, S("abcdefghij345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 4, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 4, 1, S("abcdefghij5lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 4, 2, S("abcdefghij5lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 5, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 5, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 0, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 0, 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 0, 9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 0, 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 0, 11, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 1, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 1, 1, S("abcdefghij2lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 1, 4, S("abcdefghij2345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 1, 8, S("abcdefghij23456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 1, 9, S("abcdefghij234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 1, 10, S("abcdefghij234567890lmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test47()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 5, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 5, 1, S("abcdefghij6lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 5, 2, S("abcdefghij67lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 5, 4, S("abcdefghij6789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 5, 5, S("abcdefghij67890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 5, 6, S("abcdefghij67890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 9, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 9, 1, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 9, 2, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 10, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 10, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 0, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 0, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 1, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 1, 1, S("abcdefghij2lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 1, 9, S("abcdefghij234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 10, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 10, 1, S("abcdefghij1lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 10, 5, S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 10, 9, S("abcdefghij123456789lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 19, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 19, 1, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 19, 2, S("abcdefghij0lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 20, 0, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 20, 1, S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 0, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 0, 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 0, 2, S("abcdefghij12pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 0, 4, S("abcdefghij1234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 0, 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 0, 6, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 1, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 1, 1, S("abcdefghij2pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 1, 2, S("abcdefghij23pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 1, 3, S("abcdefghij234pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 1, 4, S("abcdefghij2345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 1, 5, S("abcdefghij2345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 2, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 2, 1, S("abcdefghij3pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 2, 2, S("abcdefghij34pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 2, 3, S("abcdefghij345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 2, 4, S("abcdefghij345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 4, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 4, 1, S("abcdefghij5pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 4, 2, S("abcdefghij5pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 5, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 5, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 0, 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 0, 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 0, 9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 0, 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 0, 11, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 1, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 1, 1, S("abcdefghij2pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 1, 4, S("abcdefghij2345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 1, 8, S("abcdefghij23456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 1, 9, S("abcdefghij234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 1, 10, S("abcdefghij234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 5, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 5, 1, S("abcdefghij6pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 5, 2, S("abcdefghij67pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 5, 4, S("abcdefghij6789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 5, 5, S("abcdefghij67890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 5, 6, S("abcdefghij67890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 9, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 9, 1, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 9, 2, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 10, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 10, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 0, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 0, 1, S("abcdefghij1pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 1, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 1, 1, S("abcdefghij2pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 1, 9, S("abcdefghij234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 10, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 10, 1, S("abcdefghij1pqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test48()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 10, 5, S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 10, 9, S("abcdefghij123456789pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 19, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 19, 1, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 19, 2, S("abcdefghij0pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 20, 0, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 20, 1, S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 0, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 0, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 0, 2, S("abcdefghij12t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 0, 4, S("abcdefghij1234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 0, 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 0, 6, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 1, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 1, 1, S("abcdefghij2t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 1, 2, S("abcdefghij23t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 1, 3, S("abcdefghij234t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 1, 4, S("abcdefghij2345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 1, 5, S("abcdefghij2345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 2, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 2, 1, S("abcdefghij3t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 2, 2, S("abcdefghij34t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 2, 3, S("abcdefghij345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 2, 4, S("abcdefghij345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 4, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 4, 1, S("abcdefghij5t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 4, 2, S("abcdefghij5t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 5, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 5, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 0, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 0, 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 0, 9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 0, 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 0, 11, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 1, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 1, 1, S("abcdefghij2t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 1, 4, S("abcdefghij2345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 1, 8, S("abcdefghij23456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 1, 9, S("abcdefghij234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 1, 10, S("abcdefghij234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 5, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 5, 1, S("abcdefghij6t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 5, 2, S("abcdefghij67t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 5, 4, S("abcdefghij6789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 5, 5, S("abcdefghij67890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 5, 6, S("abcdefghij67890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 9, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 9, 1, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 9, 2, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 10, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 10, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 0, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 0, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 1, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 1, 1, S("abcdefghij2t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 1, 9, S("abcdefghij234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 10, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 10, 1, S("abcdefghij1t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 10, 5, S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 10, 9, S("abcdefghij123456789t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 19, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 19, 1, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 19, 2, S("abcdefghij0t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 20, 0, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 20, 1, S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 2, 0, S("abcdefghij"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test49()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 5, 4, S("abcdefghij6789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 0, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 0, 2, S("abcdefghij12"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 0, 4, S("abcdefghij1234"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 0, 6, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 1, 2, S("abcdefghij23"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 1, 3, S("abcdefghij234"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 1, 5, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 2, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 2, 1, S("abcdefghij3"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 2, 2, S("abcdefghij34"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 2, 3, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 2, 4, S("abcdefghij345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 4, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 4, 1, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 4, 2, S("abcdefghij5"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 5, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 0, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 0, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 0, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 1, 4, S("abcdefghij2345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 1, 8, S("abcdefghij23456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 1, 10, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 5, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 5, 1, S("abcdefghij6"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 5, 2, S("abcdefghij67"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 5, 4, S("abcdefghij6789"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test50()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 5, 5, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 5, 6, S("abcdefghij67890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 9, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 9, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 9, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 10, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 0, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 0, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 0, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 0, 19, S("abcdefghij1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 0, 20, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 0, 21, S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 1, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 1, 1, S("abcdefghij2"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 1, 9, S("abcdefghij234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 1, 18, S("abcdefghij234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 1, 19, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 1, 20, S("abcdefghij2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 10, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 10, 1, S("abcdefghij1"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 10, 5, S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 10, 9, S("abcdefghij123456789"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 10, 10, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 10, 11, S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 19, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 19, 1, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 19, 2, S("abcdefghij0"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 20, 0, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 20, 1, S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 0, 2, S("abcdefghijklmnopqrs12t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 0, 4, S("abcdefghijklmnopqrs1234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 0, 6, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 1, 2, S("abcdefghijklmnopqrs23t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 1, 3, S("abcdefghijklmnopqrs234t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 1, 5, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 2, 1, S("abcdefghijklmnopqrs3t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 2, 2, S("abcdefghijklmnopqrs34t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 2, 3, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 2, 4, S("abcdefghijklmnopqrs345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 4, 1, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 4, 2, S("abcdefghijklmnopqrs5t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 5, 1, S("abcdefghijklmnopqrs6t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 5, 2, S("abcdefghijklmnopqrs67t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 9, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 9, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890t"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test51()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 0, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 0, 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 0, 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 0, 6, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 1, 2, S("abcdefghijklmnopqrs23"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 1, 3, S("abcdefghijklmnopqrs234"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 1, 5, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 2, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 2, 1, S("abcdefghijklmnopqrs3"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 2, 2, S("abcdefghijklmnopqrs34"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 2, 3, S("abcdefghijklmnopqrs345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 2, 4, S("abcdefghijklmnopqrs345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 4, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 4, 1, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 4, 2, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 5, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 5, 1, S("abcdefghijklmnopqrs6"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 5, 2, S("abcdefghijklmnopqrs67"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 9, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 9, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 9, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 10, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 0, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 0, 2, S("abcdefghijklmnopqrs12"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 0, 4, S("abcdefghijklmnopqrs1234"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 0, 6, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 1, 2, S("abcdefghijklmnopqrs23"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 1, 3, S("abcdefghijklmnopqrs234"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 1, 5, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 2, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 2, 1, S("abcdefghijklmnopqrs3"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 2, 2, S("abcdefghijklmnopqrs34"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 2, 3, S("abcdefghijklmnopqrs345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 2, 4, S("abcdefghijklmnopqrs345"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test52()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 4, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 4, 1, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 4, 2, S("abcdefghijklmnopqrs5"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 5, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 0, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 0, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 0, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 1, 4, S("abcdefghijklmnopqrs2345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 1, 8, S("abcdefghijklmnopqrs23456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 1, 10, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 5, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 5, 1, S("abcdefghijklmnopqrs6"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 5, 2, S("abcdefghijklmnopqrs67"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 5, 4, S("abcdefghijklmnopqrs6789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 5, 5, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 5, 6, S("abcdefghijklmnopqrs67890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 9, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 9, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 9, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 10, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrs1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrs2"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrs234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrs234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrs2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrs1"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrs123456789"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrs0"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test53()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 0, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 0, 2, S("abcdefghijklmnopqrst12"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 0, 4, S("abcdefghijklmnopqrst1234"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 0, 6, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 1, 2, S("abcdefghijklmnopqrst23"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 1, 3, S("abcdefghijklmnopqrst234"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 1, 5, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 2, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 2, 1, S("abcdefghijklmnopqrst3"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 2, 2, S("abcdefghijklmnopqrst34"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 2, 3, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 2, 4, S("abcdefghijklmnopqrst345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 4, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 4, 1, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 4, 2, S("abcdefghijklmnopqrst5"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 5, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 0, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 0, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 0, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 1, 4, S("abcdefghijklmnopqrst2345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 1, 8, S("abcdefghijklmnopqrst23456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 1, 10, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 5, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 5, 1, S("abcdefghijklmnopqrst6"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 5, 2, S("abcdefghijklmnopqrst67"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 5, 4, S("abcdefghijklmnopqrst6789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 5, 5, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 5, 6, S("abcdefghijklmnopqrst67890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 9, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 9, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 9, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 10, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 0, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 0, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 0, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 0, 19, S("abcdefghijklmnopqrst1234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 0, 20, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 0, 21, S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 1, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 1, 1, S("abcdefghijklmnopqrst2"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 1, 9, S("abcdefghijklmnopqrst234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 1, 18, S("abcdefghijklmnopqrst234567890123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 1, 19, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 1, 20, S("abcdefghijklmnopqrst2345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 10, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 10, 1, S("abcdefghijklmnopqrst1"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 10, 5, S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 10, 9, S("abcdefghijklmnopqrst123456789"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 10, 10, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 10, 11, S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 19, 0, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 19, 1, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 19, 2, S("abcdefghijklmnopqrst0"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 20, 0, S("abcdefghijklmnopqrst"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test54()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 20, 1, S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("12345678901234567890"), 21, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 0, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 0, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 0, 6, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 1, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 1, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 1, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 2, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 2, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 2, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 2, 3, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 2, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 4, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 4, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 4, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345"), 6, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 0, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 0, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 0, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 1, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 1, 8, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 1, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 5, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 5, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 5, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 5, 4, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 5, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 5, 6, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 9, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 9, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 9, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("1234567890"), 11, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 0, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 0, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 0, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 0, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 0, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 0, 21, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 1, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 1, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 1, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 1, 18, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 1, 19, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 1, 20, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 10, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 10, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 10, 5, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 10, 9, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 10, 10, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 10, 11, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 19, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 19, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 19, 2, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 20, 0, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 20, 1, S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("12345678901234567890"), 21, 0, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test55()
+{
+    test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 10, S("abcdefghi1234567890"));
+    test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 19, S("abcdefghi0"));
+    test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 20, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 20, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 1, S("12345678901234567890"), 21, S("can't happen"));
+    test_npos(S("abcdefghij"), 9, 2, S(""), 0, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 2, S(""), 1, S("can't happen"));
+    test_npos(S("abcdefghij"), 9, 2, S("12345"), 0, S("abcdefghi12345"));
+    test_npos(S("abcdefghij"), 9, 2, S("12345"), 1, S("abcdefghi2345"));
+    test_npos(S("abcdefghij"), 9, 2, S("12345"), 2, S("abcdefghi345"));
+    test_npos(S("abcdefghij"), 9, 2, S("12345"), 4, S("abcdefghi5"));
+    test_npos(S("abcdefghij"), 9, 2, S("12345"), 5, S("abcdefghi"));
+    test_npos(S("abcdefghij"), 9, 2, S("12345"), 6, S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+  test10<S>();
+  test11<S>();
+  test12<S>();
+  test13<S>();
+  test14<S>();
+  test15<S>();
+  test16<S>();
+  test17<S>();
+  test18<S>();
+  test19<S>();
+  test20<S>();
+  test21<S>();
+  test22<S>();
+  test23<S>();
+  test24<S>();
+  test25<S>();
+  test26<S>();
+  test27<S>();
+  test28<S>();
+  test29<S>();
+  test30<S>();
+  test31<S>();
+  test32<S>();
+  test33<S>();
+  test34<S>();
+  test35<S>();
+  test36<S>();
+  test37<S>();
+  test38<S>();
+  test39<S>();
+  test40<S>();
+  test41<S>();
+  test42<S>();
+  test43<S>();
+  test44<S>();
+  test45<S>();
+  test46<S>();
+  test47<S>();
+  test48<S>();
+  test49<S>();
+  test50<S>();
+  test51<S>();
+  test52<S>();
+  test53<S>();
+  test54<S>();
+  test55<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+  static_assert(test10<S>());
+  static_assert(test11<S>());
+  static_assert(test12<S>());
+  static_assert(test13<S>());
+  static_assert(test14<S>());
+  static_assert(test15<S>());
+  static_assert(test16<S>());
+  static_assert(test17<S>());
+  static_assert(test18<S>());
+  static_assert(test19<S>());
+  static_assert(test20<S>());
+  static_assert(test21<S>());
+  static_assert(test22<S>());
+  static_assert(test23<S>());
+  static_assert(test24<S>());
+  static_assert(test25<S>());
+  static_assert(test26<S>());
+  static_assert(test27<S>());
+  static_assert(test28<S>());
+  static_assert(test29<S>());
+  static_assert(test30<S>());
+  static_assert(test31<S>());
+  static_assert(test32<S>());
+  static_assert(test33<S>());
+  static_assert(test34<S>());
+  static_assert(test35<S>());
+  static_assert(test36<S>());
+  static_assert(test37<S>());
+  static_assert(test38<S>());
+  static_assert(test39<S>());
+  static_assert(test40<S>());
+  static_assert(test41<S>());
+  static_assert(test42<S>());
+  static_assert(test43<S>());
+  static_assert(test44<S>());
+  static_assert(test45<S>());
+  static_assert(test46<S>());
+  static_assert(test47<S>());
+  static_assert(test48<S>());
+  static_assert(test49<S>());
+  static_assert(test50<S>());
+  static_assert(test51<S>());
+  static_assert(test52<S>());
+  static_assert(test53<S>());
+  static_assert(test54<S>());
+  static_assert(test55<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_view.pass.cpp
new file mode 100644
index 0000000..fb22f84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_replace/size_size_string_view.pass.cpp
@@ -0,0 +1,394 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string<charT,traits,Allocator>&
+//   replace(size_type pos1, size_type n1, basic_string_view<charT,traits> sv); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(S s, typename S::size_type pos1, typename S::size_type n1, SV sv, S expected)
+{
+    const typename S::size_type old_size = s.size();
+    S s0 = s;
+    if (pos1 <= old_size)
+    {
+        s.replace(pos1, n1, sv);
+        LIBCPP_ASSERT(s.__invariants());
+        assert(s == expected);
+        typename S::size_type xlen = std::min(n1, old_size - pos1);
+        typename S::size_type rlen = sv.size();
+        assert(s.size() == old_size - xlen + rlen);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            s.replace(pos1, n1, sv);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > old_size);
+            assert(s == s0);
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, SV(""), S(""));
+    test(S(""), 0, 0, SV("12345"), S("12345"));
+    test(S(""), 0, 0, SV("1234567890"), S("1234567890"));
+    test(S(""), 0, 0, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S(""), 0, 1, SV(""), S(""));
+    test(S(""), 0, 1, SV("12345"), S("12345"));
+    test(S(""), 0, 1, SV("1234567890"), S("1234567890"));
+    test(S(""), 0, 1, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S(""), 1, 0, SV(""), S("can't happen"));
+    test(S(""), 1, 0, SV("12345"), S("can't happen"));
+    test(S(""), 1, 0, SV("1234567890"), S("can't happen"));
+    test(S(""), 1, 0, SV("12345678901234567890"), S("can't happen"));
+    test(S("abcde"), 0, 0, SV(""), S("abcde"));
+    test(S("abcde"), 0, 0, SV("12345"), S("12345abcde"));
+    test(S("abcde"), 0, 0, SV("1234567890"), S("1234567890abcde"));
+    test(S("abcde"), 0, 0, SV("12345678901234567890"), S("12345678901234567890abcde"));
+    test(S("abcde"), 0, 1, SV(""), S("bcde"));
+    test(S("abcde"), 0, 1, SV("12345"), S("12345bcde"));
+    test(S("abcde"), 0, 1, SV("1234567890"), S("1234567890bcde"));
+    test(S("abcde"), 0, 1, SV("12345678901234567890"), S("12345678901234567890bcde"));
+    test(S("abcde"), 0, 2, SV(""), S("cde"));
+    test(S("abcde"), 0, 2, SV("12345"), S("12345cde"));
+    test(S("abcde"), 0, 2, SV("1234567890"), S("1234567890cde"));
+    test(S("abcde"), 0, 2, SV("12345678901234567890"), S("12345678901234567890cde"));
+    test(S("abcde"), 0, 4, SV(""), S("e"));
+    test(S("abcde"), 0, 4, SV("12345"), S("12345e"));
+    test(S("abcde"), 0, 4, SV("1234567890"), S("1234567890e"));
+    test(S("abcde"), 0, 4, SV("12345678901234567890"), S("12345678901234567890e"));
+    test(S("abcde"), 0, 5, SV(""), S(""));
+    test(S("abcde"), 0, 5, SV("12345"), S("12345"));
+    test(S("abcde"), 0, 5, SV("1234567890"), S("1234567890"));
+    test(S("abcde"), 0, 5, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 0, 6, SV(""), S(""));
+    test(S("abcde"), 0, 6, SV("12345"), S("12345"));
+    test(S("abcde"), 0, 6, SV("1234567890"), S("1234567890"));
+    test(S("abcde"), 0, 6, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcde"), 1, 0, SV(""), S("abcde"));
+    test(S("abcde"), 1, 0, SV("12345"), S("a12345bcde"));
+    test(S("abcde"), 1, 0, SV("1234567890"), S("a1234567890bcde"));
+    test(S("abcde"), 1, 0, SV("12345678901234567890"), S("a12345678901234567890bcde"));
+    test(S("abcde"), 1, 1, SV(""), S("acde"));
+    test(S("abcde"), 1, 1, SV("12345"), S("a12345cde"));
+    test(S("abcde"), 1, 1, SV("1234567890"), S("a1234567890cde"));
+    test(S("abcde"), 1, 1, SV("12345678901234567890"), S("a12345678901234567890cde"));
+    test(S("abcde"), 1, 2, SV(""), S("ade"));
+    test(S("abcde"), 1, 2, SV("12345"), S("a12345de"));
+    test(S("abcde"), 1, 2, SV("1234567890"), S("a1234567890de"));
+    test(S("abcde"), 1, 2, SV("12345678901234567890"), S("a12345678901234567890de"));
+    test(S("abcde"), 1, 3, SV(""), S("ae"));
+    test(S("abcde"), 1, 3, SV("12345"), S("a12345e"));
+    test(S("abcde"), 1, 3, SV("1234567890"), S("a1234567890e"));
+    test(S("abcde"), 1, 3, SV("12345678901234567890"), S("a12345678901234567890e"));
+    test(S("abcde"), 1, 4, SV(""), S("a"));
+    test(S("abcde"), 1, 4, SV("12345"), S("a12345"));
+    test(S("abcde"), 1, 4, SV("1234567890"), S("a1234567890"));
+    test(S("abcde"), 1, 4, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcde"), 1, 5, SV(""), S("a"));
+    test(S("abcde"), 1, 5, SV("12345"), S("a12345"));
+    test(S("abcde"), 1, 5, SV("1234567890"), S("a1234567890"));
+    test(S("abcde"), 1, 5, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcde"), 2, 0, SV(""), S("abcde"));
+    test(S("abcde"), 2, 0, SV("12345"), S("ab12345cde"));
+    test(S("abcde"), 2, 0, SV("1234567890"), S("ab1234567890cde"));
+    test(S("abcde"), 2, 0, SV("12345678901234567890"), S("ab12345678901234567890cde"));
+    test(S("abcde"), 2, 1, SV(""), S("abde"));
+    test(S("abcde"), 2, 1, SV("12345"), S("ab12345de"));
+    test(S("abcde"), 2, 1, SV("1234567890"), S("ab1234567890de"));
+    test(S("abcde"), 2, 1, SV("12345678901234567890"), S("ab12345678901234567890de"));
+    test(S("abcde"), 2, 2, SV(""), S("abe"));
+    test(S("abcde"), 2, 2, SV("12345"), S("ab12345e"));
+    test(S("abcde"), 2, 2, SV("1234567890"), S("ab1234567890e"));
+    test(S("abcde"), 2, 2, SV("12345678901234567890"), S("ab12345678901234567890e"));
+    test(S("abcde"), 2, 3, SV(""), S("ab"));
+    test(S("abcde"), 2, 3, SV("12345"), S("ab12345"));
+    test(S("abcde"), 2, 3, SV("1234567890"), S("ab1234567890"));
+    test(S("abcde"), 2, 3, SV("12345678901234567890"), S("ab12345678901234567890"));
+    test(S("abcde"), 2, 4, SV(""), S("ab"));
+    test(S("abcde"), 2, 4, SV("12345"), S("ab12345"));
+    test(S("abcde"), 2, 4, SV("1234567890"), S("ab1234567890"));
+    test(S("abcde"), 2, 4, SV("12345678901234567890"), S("ab12345678901234567890"));
+    test(S("abcde"), 4, 0, SV(""), S("abcde"));
+    test(S("abcde"), 4, 0, SV("12345"), S("abcd12345e"));
+    test(S("abcde"), 4, 0, SV("1234567890"), S("abcd1234567890e"));
+    test(S("abcde"), 4, 0, SV("12345678901234567890"), S("abcd12345678901234567890e"));
+    test(S("abcde"), 4, 1, SV(""), S("abcd"));
+    test(S("abcde"), 4, 1, SV("12345"), S("abcd12345"));
+    test(S("abcde"), 4, 1, SV("1234567890"), S("abcd1234567890"));
+    test(S("abcde"), 4, 1, SV("12345678901234567890"), S("abcd12345678901234567890"));
+    test(S("abcde"), 4, 2, SV(""), S("abcd"));
+    test(S("abcde"), 4, 2, SV("12345"), S("abcd12345"));
+    test(S("abcde"), 4, 2, SV("1234567890"), S("abcd1234567890"));
+    test(S("abcde"), 4, 2, SV("12345678901234567890"), S("abcd12345678901234567890"));
+    test(S("abcde"), 5, 0, SV(""), S("abcde"));
+    test(S("abcde"), 5, 0, SV("12345"), S("abcde12345"));
+    test(S("abcde"), 5, 0, SV("1234567890"), S("abcde1234567890"));
+    test(S("abcde"), 5, 0, SV("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcde"), 5, 1, SV(""), S("abcde"));
+    test(S("abcde"), 5, 1, SV("12345"), S("abcde12345"));
+    test(S("abcde"), 5, 1, SV("1234567890"), S("abcde1234567890"));
+    test(S("abcde"), 5, 1, SV("12345678901234567890"), S("abcde12345678901234567890"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 6, 0, SV(""), S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345"), S("can't happen"));
+    test(S("abcde"), 6, 0, SV("1234567890"), S("can't happen"));
+    test(S("abcde"), 6, 0, SV("12345678901234567890"), S("can't happen"));
+    test(S("abcdefghij"), 0, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345"), S("12345abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("1234567890"), S("1234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 0, SV("12345678901234567890"), S("12345678901234567890abcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV(""), S("bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345"), S("12345bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("1234567890"), S("1234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 1, SV("12345678901234567890"), S("12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 0, 5, SV(""), S("fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345"), S("12345fghij"));
+    test(S("abcdefghij"), 0, 5, SV("1234567890"), S("1234567890fghij"));
+    test(S("abcdefghij"), 0, 5, SV("12345678901234567890"), S("12345678901234567890fghij"));
+    test(S("abcdefghij"), 0, 9, SV(""), S("j"));
+    test(S("abcdefghij"), 0, 9, SV("12345"), S("12345j"));
+    test(S("abcdefghij"), 0, 9, SV("1234567890"), S("1234567890j"));
+    test(S("abcdefghij"), 0, 9, SV("12345678901234567890"), S("12345678901234567890j"));
+    test(S("abcdefghij"), 0, 10, SV(""), S(""));
+    test(S("abcdefghij"), 0, 10, SV("12345"), S("12345"));
+    test(S("abcdefghij"), 0, 10, SV("1234567890"), S("1234567890"));
+    test(S("abcdefghij"), 0, 10, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghij"), 0, 11, SV(""), S(""));
+    test(S("abcdefghij"), 0, 11, SV("12345"), S("12345"));
+    test(S("abcdefghij"), 0, 11, SV("1234567890"), S("1234567890"));
+    test(S("abcdefghij"), 0, 11, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghij"), 1, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345"), S("a12345bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("1234567890"), S("a1234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 0, SV("12345678901234567890"), S("a12345678901234567890bcdefghij"));
+    test(S("abcdefghij"), 1, 1, SV(""), S("acdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345"), S("a12345cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("1234567890"), S("a1234567890cdefghij"));
+    test(S("abcdefghij"), 1, 1, SV("12345678901234567890"), S("a12345678901234567890cdefghij"));
+    test(S("abcdefghij"), 1, 4, SV(""), S("afghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345"), S("a12345fghij"));
+    test(S("abcdefghij"), 1, 4, SV("1234567890"), S("a1234567890fghij"));
+    test(S("abcdefghij"), 1, 4, SV("12345678901234567890"), S("a12345678901234567890fghij"));
+    test(S("abcdefghij"), 1, 8, SV(""), S("aj"));
+    test(S("abcdefghij"), 1, 8, SV("12345"), S("a12345j"));
+    test(S("abcdefghij"), 1, 8, SV("1234567890"), S("a1234567890j"));
+    test(S("abcdefghij"), 1, 8, SV("12345678901234567890"), S("a12345678901234567890j"));
+    test(S("abcdefghij"), 1, 9, SV(""), S("a"));
+    test(S("abcdefghij"), 1, 9, SV("12345"), S("a12345"));
+    test(S("abcdefghij"), 1, 9, SV("1234567890"), S("a1234567890"));
+    test(S("abcdefghij"), 1, 9, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghij"), 1, 10, SV(""), S("a"));
+    test(S("abcdefghij"), 1, 10, SV("12345"), S("a12345"));
+    test(S("abcdefghij"), 1, 10, SV("1234567890"), S("a1234567890"));
+    test(S("abcdefghij"), 1, 10, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghij"), 5, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345"), S("abcde12345fghij"));
+    test(S("abcdefghij"), 5, 0, SV("1234567890"), S("abcde1234567890fghij"));
+    test(S("abcdefghij"), 5, 0, SV("12345678901234567890"), S("abcde12345678901234567890fghij"));
+    test(S("abcdefghij"), 5, 1, SV(""), S("abcdeghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345"), S("abcde12345ghij"));
+    test(S("abcdefghij"), 5, 1, SV("1234567890"), S("abcde1234567890ghij"));
+    test(S("abcdefghij"), 5, 1, SV("12345678901234567890"), S("abcde12345678901234567890ghij"));
+    test(S("abcdefghij"), 5, 2, SV(""), S("abcdehij"));
+    test(S("abcdefghij"), 5, 2, SV("12345"), S("abcde12345hij"));
+    test(S("abcdefghij"), 5, 2, SV("1234567890"), S("abcde1234567890hij"));
+    test(S("abcdefghij"), 5, 2, SV("12345678901234567890"), S("abcde12345678901234567890hij"));
+    test(S("abcdefghij"), 5, 4, SV(""), S("abcdej"));
+    test(S("abcdefghij"), 5, 4, SV("12345"), S("abcde12345j"));
+    test(S("abcdefghij"), 5, 4, SV("1234567890"), S("abcde1234567890j"));
+    test(S("abcdefghij"), 5, 4, SV("12345678901234567890"), S("abcde12345678901234567890j"));
+    test(S("abcdefghij"), 5, 5, SV(""), S("abcde"));
+    test(S("abcdefghij"), 5, 5, SV("12345"), S("abcde12345"));
+    test(S("abcdefghij"), 5, 5, SV("1234567890"), S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 5, SV("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 5, 6, SV(""), S("abcde"));
+    test(S("abcdefghij"), 5, 6, SV("12345"), S("abcde12345"));
+    test(S("abcdefghij"), 5, 6, SV("1234567890"), S("abcde1234567890"));
+    test(S("abcdefghij"), 5, 6, SV("12345678901234567890"), S("abcde12345678901234567890"));
+    test(S("abcdefghij"), 9, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 9, 0, SV("12345"), S("abcdefghi12345j"));
+    test(S("abcdefghij"), 9, 0, SV("1234567890"), S("abcdefghi1234567890j"));
+    test(S("abcdefghij"), 9, 0, SV("12345678901234567890"), S("abcdefghi12345678901234567890j"));
+    test(S("abcdefghij"), 9, 1, SV(""), S("abcdefghi"));
+    test(S("abcdefghij"), 9, 1, SV("12345"), S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 1, SV("1234567890"), S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 1, SV("12345678901234567890"), S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 9, 2, SV(""), S("abcdefghi"));
+    test(S("abcdefghij"), 9, 2, SV("12345"), S("abcdefghi12345"));
+    test(S("abcdefghij"), 9, 2, SV("1234567890"), S("abcdefghi1234567890"));
+    test(S("abcdefghij"), 9, 2, SV("12345678901234567890"), S("abcdefghi12345678901234567890"));
+    test(S("abcdefghij"), 10, 0, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 10, 0, SV("12345"), S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 0, SV("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 0, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 10, 1, SV(""), S("abcdefghij"));
+    test(S("abcdefghij"), 10, 1, SV("12345"), S("abcdefghij12345"));
+    test(S("abcdefghij"), 10, 1, SV("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghij"), 10, 1, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghij"), 11, 0, SV(""), S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345"), S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("1234567890"), S("can't happen"));
+    test(S("abcdefghij"), 11, 0, SV("12345678901234567890"), S("can't happen"));
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345"), S("12345abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("1234567890"), S("1234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("12345678901234567890"), S("12345678901234567890abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), S("bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345"), S("12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("1234567890"), S("1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("12345678901234567890"), S("12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), S("klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345"), S("12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("1234567890"), S("1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("12345678901234567890"), S("12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), S("t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345"), S("12345t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("1234567890"), S("1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("12345678901234567890"), S("12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("1234567890"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), S(""));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("1234567890"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("12345678901234567890"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345"), S("a12345bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("1234567890"), S("a1234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("12345678901234567890"), S("a12345678901234567890bcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), S("acdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345"), S("a12345cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("1234567890"), S("a1234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("12345678901234567890"), S("a12345678901234567890cdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), S("aklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345"), S("a12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("1234567890"), S("a1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("12345678901234567890"), S("a12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), S("at"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345"), S("a12345t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("1234567890"), S("a1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("12345678901234567890"), S("a12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345"), S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("1234567890"), S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), S("a"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345"), S("a12345"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("1234567890"), S("a1234567890"));
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("12345678901234567890"), S("a12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345"), S("abcdefghij12345klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("1234567890"), S("abcdefghij1234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("12345678901234567890"), S("abcdefghij12345678901234567890klmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), S("abcdefghijlmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345"), S("abcdefghij12345lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("1234567890"), S("abcdefghij1234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("12345678901234567890"), S("abcdefghij12345678901234567890lmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), S("abcdefghijpqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345"), S("abcdefghij12345pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("1234567890"), S("abcdefghij1234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("12345678901234567890"), S("abcdefghij12345678901234567890pqrst"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), S("abcdefghijt"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345"), S("abcdefghij12345t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("1234567890"), S("abcdefghij1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("12345678901234567890"), S("abcdefghij12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345"), S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345"), S("abcdefghij12345"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("1234567890"), S("abcdefghij1234567890"));
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("12345678901234567890"), S("abcdefghij12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345"), S("abcdefghijklmnopqrs12345t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("1234567890"), S("abcdefghijklmnopqrs1234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890t"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345"), S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("1234567890"), S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), S("abcdefghijklmnopqrs"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345"), S("abcdefghijklmnopqrs12345"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("1234567890"), S("abcdefghijklmnopqrs1234567890"));
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("12345678901234567890"), S("abcdefghijklmnopqrs12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345"), S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), S("abcdefghijklmnopqrst"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345"), S("abcdefghijklmnopqrst12345"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("1234567890"), S("abcdefghijklmnopqrst1234567890"));
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("12345678901234567890"), S("abcdefghijklmnopqrst12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345"), S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("1234567890"), S("can't happen"));
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("12345678901234567890"), S("can't happen"));
+
+    return true;
+}
+
+template <class S>
+void test() {
+  {
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+    test2<S, SV>();
+#if TEST_STD_VER > 17
+    static_assert(test0<S, SV>());
+    static_assert(test1<S, SV>());
+    static_assert(test2<S, SV>());
+#endif
+  }
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.pass.cpp
new file mode 100644
index 0000000..f11b7a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.modifiers/string_swap/swap.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// void swap(basic_string& s); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, S s2)
+{
+    S s1_ = s1;
+    S s2_ = s2;
+    s1.swap(s2);
+    LIBCPP_ASSERT(s1.__invariants());
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s1 == s2_);
+    assert(s2 == s1_);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), S(""));
+  test(S(""), S("12345"));
+  test(S(""), S("1234567890"));
+  test(S(""), S("12345678901234567890"));
+  test(S("abcde"), S(""));
+  test(S("abcde"), S("12345"));
+  test(S("abcde"), S("1234567890"));
+  test(S("abcde"), S("12345678901234567890"));
+  test(S("abcdefghij"), S(""));
+  test(S("abcdefghij"), S("12345"));
+  test(S("abcdefghij"), S("1234567890"));
+  test(S("abcdefghij"), S("12345678901234567890"));
+  test(S("abcdefghijklmnopqrst"), S(""));
+  test(S("abcdefghijklmnopqrst"), S("12345"));
+  test(S("abcdefghijklmnopqrst"), S("1234567890"));
+  test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.cmp/comparison.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.cmp/comparison.pass.cpp
new file mode 100644
index 0000000..d9f71bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.cmp/comparison.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Starting with C++20 the spaceship operator was included. This tests
+// comparison in that context, thus doesn't support older language versions.
+// These are tested per operator.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   see below operator<=>(const basic_string<charT, traits, Allocator>& lhs,
+//                         const basic_string<charT, traits, Allocator>& rhs) noexcept;
+// template<class charT, class traits, class Allocator>
+//   see below operator<=>(const basic_string<charT, traits, Allocator>& lhs,
+//                         const charT* rhs);
+
+#include <string>
+
+#include <array>
+#include <cassert>
+#include <string_view>
+
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+#include "test_comparisons.h"
+#include "test_macros.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+
+template <class T, class Ordering = std::strong_ordering>
+constexpr void test() {
+  AssertOrderAreNoexcept<T>();
+  AssertOrderReturn<Ordering, T>();
+
+  using CharT = typename T::value_type;
+  AssertOrderReturn<Ordering, T, const CharT*>();
+
+  // sorted values
+  std::array v{
+      STR(""),
+      STR("abc"),
+      STR("abcdef"),
+      STR("acb"),
+  };
+
+  // sorted values with embedded NUL character
+  std::array vn{
+      STR("abc"),
+      STR("abc\0"),
+      STR("abc\0def"),
+      STR("acb\0"),
+  };
+  static_assert(v.size() == vn.size());
+
+  for (size_t i = 0; i < v.size(); ++i) {
+    for (size_t j = 0; j < v.size(); ++j) {
+      assert(testOrder(v[i], v[j], i == j ? Ordering::equivalent : i < j ? Ordering::less : Ordering::greater));
+
+      assert(testOrder(
+          v[i],
+          std::basic_string<CharT>{v[j]}.c_str(),
+          i == j  ? Ordering::equivalent
+          : i < j ? Ordering::less
+                  : Ordering::greater));
+
+      // NUL test omitted for c-strings since it will fail.
+      assert(testOrder(vn[i], vn[j], i == j ? Ordering::equivalent : i < j ? Ordering::less : Ordering::greater));
+    }
+  }
+}
+
+constexpr bool test_all_types() {
+  test<std::string>();
+  test<std::basic_string<char, constexpr_char_traits<char>>, std::weak_ordering>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<std::wstring>();
+  test<std::basic_string<wchar_t, constexpr_char_traits<wchar_t>>, std::weak_ordering>();
+#endif
+  test<std::u8string>();
+  test<std::basic_string<char8_t, constexpr_char_traits<char8_t>>, std::weak_ordering>();
+  test<std::u16string>();
+  test<std::basic_string<char16_t, constexpr_char_traits<char16_t>>, std::weak_ordering>();
+  test<std::u32string>();
+  test<std::basic_string<char32_t, constexpr_char_traits<char32_t>>, std::weak_ordering>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all_types();
+  static_assert(test_all_types());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line.pass.cpp
new file mode 100644
index 0000000..aa00fc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_istream<charT,traits>&
+//   getline(basic_istream<charT,traits>& is,
+//           basic_string<charT,traits,Allocator>& str);
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream in(" abc\n  def\n   ghij");
+        std::string s("initial text");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == " abc");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == "  def");
+        std::getline(in, s);
+        assert(in.eof());
+        assert(s == "   ghij");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream in(L" abc\n  def\n   ghij");
+        std::wstring s(L"initial text");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == L" abc");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == L"  def");
+        std::getline(in, s);
+        assert(in.eof());
+        assert(s == L"   ghij");
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+        std::istringstream in(" abc\n  def\n   ghij");
+        S s("initial text");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == " abc");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == "  def");
+        std::getline(in, s);
+        assert(in.eof());
+        assert(s == "   ghij");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S;
+        std::wistringstream in(L" abc\n  def\n   ghij");
+        S s(L"initial text");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == L" abc");
+        std::getline(in, s);
+        assert(in.good());
+        assert(s == L"  def");
+        std::getline(in, s);
+        assert(in.eof());
+        assert(s == L"   ghij");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_STD_VER >= 11
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::basic_stringbuf<char> sb("hello");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        std::basic_string<char> s;
+        bool threw = false;
+        try {
+            std::getline(is, s);
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(!is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == "hello");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::basic_stringbuf<wchar_t> sb(L"hello");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::eofbit);
+
+        std::basic_string<wchar_t> s;
+        bool threw = false;
+        try {
+            std::getline(is, s);
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(!is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == L"hello");
+    }
+#endif
+
+    {
+        std::basic_stringbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        std::basic_string<char> s;
+        bool threw = false;
+        try {
+            std::getline(is, s);
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::basic_stringbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios_base::failbit);
+
+        std::basic_string<wchar_t> s;
+        bool threw = false;
+        try {
+            std::getline(is, s);
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == L"");
+    }
+#endif
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_delim.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_delim.pass.cpp
new file mode 100644
index 0000000..1899794
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_delim.pass.cpp
@@ -0,0 +1,181 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_istream<charT,traits>&
+//   getline(basic_istream<charT,traits>& is,
+//           basic_string<charT,traits,Allocator>& str, charT delim);
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream in(" abc*  def**   ghij");
+        std::string s("initial text");
+        std::getline(in, s, '*');
+        assert(in.good());
+        assert(s == " abc");
+        std::getline(in, s, '*');
+        assert(in.good());
+        assert(s == "  def");
+        std::getline(in, s, '*');
+        assert(in.good());
+        assert(s == "");
+        std::getline(in, s, '*');
+        assert(in.eof());
+        assert(s == "   ghij");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream in(L" abc*  def**   ghij");
+        std::wstring s(L"initial text");
+        std::getline(in, s, L'*');
+        assert(in.good());
+        assert(s == L" abc");
+        std::getline(in, s, L'*');
+        assert(in.good());
+        assert(s == L"  def");
+        std::getline(in, s, L'*');
+        assert(in.good());
+        assert(s == L"");
+        std::getline(in, s, L'*');
+        assert(in.eof());
+        assert(s == L"   ghij");
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+        std::istringstream in(" abc*  def**   ghij");
+        S s("initial text");
+        std::getline(in, s, '*');
+        assert(in.good());
+        assert(s == " abc");
+        std::getline(in, s, '*');
+        assert(in.good());
+        assert(s == "  def");
+        std::getline(in, s, '*');
+        assert(in.good());
+        assert(s == "");
+        std::getline(in, s, '*');
+        assert(in.eof());
+        assert(s == "   ghij");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S;
+        std::wistringstream in(L" abc*  def**   ghij");
+        S s(L"initial text");
+        std::getline(in, s, L'*');
+        assert(in.good());
+        assert(s == L" abc");
+        std::getline(in, s, L'*');
+        assert(in.good());
+        assert(s == L"  def");
+        std::getline(in, s, L'*');
+        assert(in.good());
+        assert(s == L"");
+        std::getline(in, s, L'*');
+        assert(in.eof());
+        assert(s == L"   ghij");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_STD_VER >= 11
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::basic_stringbuf<char> sb("hello");
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios::eofbit);
+
+        std::basic_string<char> s;
+        bool threw = false;
+        try {
+            std::getline(is, s, '\n');
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(!is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == "hello");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::basic_stringbuf<wchar_t> sb(L"hello");
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios::eofbit);
+
+        std::basic_string<wchar_t> s;
+        bool threw = false;
+        try {
+            std::getline(is, s, L'\n');
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(!is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == L"hello");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::basic_stringbuf<char> sb;
+        std::basic_istream<char> is(&sb);
+        is.exceptions(std::ios::failbit);
+
+        std::basic_string<char> s;
+        bool threw = false;
+        try {
+            std::getline(is, s, '\n');
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == "");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::basic_stringbuf<wchar_t> sb;
+        std::basic_istream<wchar_t> is(&sb);
+        is.exceptions(std::ios::failbit);
+
+        std::basic_string<wchar_t> s;
+        bool threw = false;
+        try {
+            std::getline(is, s, L'\n');
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert( is.fail());
+        assert( is.eof());
+        assert(threw);
+        assert(s == L"");
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_delim_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_delim_rv.pass.cpp
new file mode 100644
index 0000000..8e14148
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_delim_rv.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_istream<charT,traits>&
+//   getline(basic_istream<charT,traits>&& is,
+//           basic_string<charT,traits,Allocator>& str, charT delim);
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::string s("initial text");
+        std::getline(std::istringstream(" abc*  def*   ghij"), s, '*');
+        assert(s == " abc");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstring s(L"initial text");
+        std::getline(std::wistringstream(L" abc*  def*   ghij"), s, L'*');
+        assert(s == L" abc");
+    }
+#endif
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+        S s("initial text");
+        std::getline(std::istringstream(" abc*  def*   ghij"), s, '*');
+        assert(s == " abc");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t> > S;
+        S s(L"initial text");
+        std::getline(std::wistringstream(L" abc*  def*   ghij"), s, L'*');
+        assert(s == L" abc");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_rv.pass.cpp
new file mode 100644
index 0000000..146b562
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/get_line_rv.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_istream<charT,traits>&
+//   getline(basic_istream<charT,traits>&& is,
+//           basic_string<charT,traits,Allocator>& str);
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::string s("initial text");
+        std::getline(std::istringstream(" abc\n  def\n   ghij"), s);
+        assert(s == " abc");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wstring s(L"initial text");
+        std::getline(std::wistringstream(L" abc\n  def\n   ghij"), s);
+        assert(s == L" abc");
+    }
+#endif
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char> > S;
+        S s("initial text");
+        std::getline(std::istringstream(" abc\n  def\n   ghij"), s);
+        assert(s == " abc");
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t> > S;
+        S s(L"initial text");
+        std::getline(std::wistringstream(L" abc\n  def\n   ghij"), s);
+        assert(s == L" abc");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/lit.local.cfg b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/lit.local.cfg
new file mode 100644
index 0000000..7780409
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/lit.local.cfg
@@ -0,0 +1,3 @@
+# These std::string functions require iostreams, which requires localization
+if 'no-localization' in config.available_features:
+  config.unsupported = True
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_extract.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_extract.pass.cpp
new file mode 100644
index 0000000..686b7a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_extract.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_istream<charT,traits>&
+//   operator>>(basic_istream<charT,traits>& is,
+//              basic_string<charT,traits,Allocator>& str);
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream in("a bc defghij");
+        std::string s("initial text");
+        in >> s;
+        assert(in.good());
+        assert(s == "a");
+        assert(in.peek() == ' ');
+        in >> s;
+        assert(in.good());
+        assert(s == "bc");
+        assert(in.peek() == ' ');
+        in.width(3);
+        in >> s;
+        assert(in.good());
+        assert(s == "def");
+        assert(in.peek() == 'g');
+        in >> s;
+        assert(in.eof());
+        assert(s == "ghij");
+        in >> s;
+        assert(in.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wistringstream in(L"a bc defghij");
+        std::wstring s(L"initial text");
+        in >> s;
+        assert(in.good());
+        assert(s == L"a");
+        assert(in.peek() == L' ');
+        in >> s;
+        assert(in.good());
+        assert(s == L"bc");
+        assert(in.peek() == L' ');
+        in.width(3);
+        in >> s;
+        assert(in.good());
+        assert(s == L"def");
+        assert(in.peek() == L'g');
+        in >> s;
+        assert(in.eof());
+        assert(s == L"ghij");
+        in >> s;
+        assert(in.fail());
+    }
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::stringbuf sb;
+        std::istream is(&sb);
+        is.exceptions(std::ios::failbit);
+
+        bool threw = false;
+        try {
+            std::string s;
+            is >> s;
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        std::stringbuf sb;
+        std::istream is(&sb);
+        is.exceptions(std::ios::eofbit);
+
+        bool threw = false;
+        try {
+            std::string s;
+            is >> s;
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#if TEST_STD_VER >= 11
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+        std::istringstream in("a bc defghij");
+        S s("initial text");
+        in >> s;
+        assert(in.good());
+        assert(s == "a");
+        assert(in.peek() == ' ');
+        in >> s;
+        assert(in.good());
+        assert(s == "bc");
+        assert(in.peek() == ' ');
+        in.width(3);
+        in >> s;
+        assert(in.good());
+        assert(s == "def");
+        assert(in.peek() == 'g');
+        in >> s;
+        assert(in.eof());
+        assert(s == "ghij");
+        in >> s;
+        assert(in.fail());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S;
+        std::wistringstream in(L"a bc defghij");
+        S s(L"initial text");
+        in >> s;
+        assert(in.good());
+        assert(s == L"a");
+        assert(in.peek() == L' ');
+        in >> s;
+        assert(in.good());
+        assert(s == L"bc");
+        assert(in.peek() == L' ');
+        in.width(3);
+        in >> s;
+        assert(in.good());
+        assert(s == L"def");
+        assert(in.peek() == L'g');
+        in >> s;
+        assert(in.eof());
+        assert(s == L"ghij");
+        in >> s;
+        assert(in.fail());
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_insert.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_insert.pass.cpp
new file mode 100644
index 0000000..d2b2890
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.io/stream_insert.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_ostream<charT, traits>&
+//   operator<<(basic_ostream<charT, traits>& os,
+//              const basic_string<charT,traits,Allocator>& str);
+
+#include <string>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream out;
+        std::string s("some text");
+        out << s;
+        assert(out.good());
+        assert(s == out.str());
+    }
+    {
+        std::ostringstream out;
+        std::string s("some text");
+        out.width(12);
+        out << s;
+        assert(out.good());
+        assert("   " + s == out.str());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream out;
+        std::wstring s(L"some text");
+        out << s;
+        assert(out.good());
+        assert(s == out.str());
+    }
+    {
+        std::wostringstream out;
+        std::wstring s(L"some text");
+        out.width(12);
+        out << s;
+        assert(out.good());
+        assert(L"   " + s == out.str());
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+        std::basic_ostringstream<S::value_type, S::traits_type, S::allocator_type> out;
+        S s("some text");
+        out << s;
+        assert(out.good());
+        assert(s == out.str());
+    }
+    {
+        typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+        std::basic_ostringstream<S::value_type, S::traits_type, S::allocator_type> out;
+        S s("some text");
+        out.width(12);
+        out << s;
+        assert(out.good());
+        assert("   " + s == out.str());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S;
+        std::basic_ostringstream<S::value_type, S::traits_type, S::allocator_type> out;
+        S s(L"some text");
+        out << s;
+        assert(out.good());
+        assert(s == out.str());
+    }
+    {
+        typedef std::basic_string<wchar_t, std::char_traits<wchar_t>, min_allocator<wchar_t>> S;
+        std::basic_ostringstream<S::value_type, S::traits_type, S::allocator_type> out;
+        S s(L"some text");
+        out.width(12);
+        out << s;
+        assert(out.good());
+        assert(L"   " + s == out.str());
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap.pass.cpp
new file mode 100644
index 0000000..0425cd5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   void swap(basic_string<charT,traits,Allocator>& lhs,
+//             basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(S s1, S s2)
+{
+    S s1_ = s1;
+    S s2_ = s2;
+    swap(s1, s2);
+    LIBCPP_ASSERT(s1.__invariants());
+    LIBCPP_ASSERT(s2.__invariants());
+    assert(s1 == s2_);
+    assert(s2 == s1_);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""));
+    test(S(""), S("12345"));
+    test(S(""), S("1234567890"));
+    test(S(""), S("12345678901234567890"));
+    test(S("abcde"), S(""));
+    test(S("abcde"), S("12345"));
+    test(S("abcde"), S("1234567890"));
+    test(S("abcde"), S("12345678901234567890"));
+    test(S("abcdefghij"), S(""));
+    test(S("abcdefghij"), S("12345"));
+    test(S("abcdefghij"), S("1234567890"));
+    test(S("abcdefghij"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), S(""));
+    test(S("abcdefghijklmnopqrst"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""));
+    test(S(""), S("12345"));
+    test(S(""), S("1234567890"));
+    test(S(""), S("12345678901234567890"));
+    test(S("abcde"), S(""));
+    test(S("abcde"), S("12345"));
+    test(S("abcde"), S("1234567890"));
+    test(S("abcde"), S("12345678901234567890"));
+    test(S("abcdefghij"), S(""));
+    test(S("abcdefghij"), S("12345"));
+    test(S("abcdefghij"), S("1234567890"));
+    test(S("abcdefghij"), S("12345678901234567890"));
+    test(S("abcdefghijklmnopqrst"), S(""));
+    test(S("abcdefghijklmnopqrst"), S("12345"));
+    test(S("abcdefghijklmnopqrst"), S("1234567890"));
+    test(S("abcdefghijklmnopqrst"), S("12345678901234567890"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap_noexcept.pass.cpp
new file mode 100644
index 0000000..de82002
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string.special/swap_noexcept.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <string>
+
+// void swap(basic_string& c)
+//     noexcept(!allocator_type::propagate_on_container_swap::value ||
+//              __is_nothrow_swappable<allocator_type>::value); // constexpr since C++20
+//
+//  In C++17, the standard says that swap shall have:
+//     noexcept(allocator_traits<Allocator>::propagate_on_container_swap::value ||
+//              allocator_traits<Allocator>::is_always_equal::value); // constexpr since C++20
+
+// This tests a conforming extension
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+template <class T>
+struct some_alloc
+{
+    typedef T value_type;
+
+    some_alloc() {}
+    some_alloc(const some_alloc&);
+    T *allocate(size_t);
+    void deallocate(void*, unsigned) {}
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct some_alloc2
+{
+    typedef T value_type;
+
+    some_alloc2() {}
+    some_alloc2(const some_alloc2&);
+    T *allocate(size_t);
+    void deallocate(void*, unsigned) {}
+
+    typedef std::false_type propagate_on_container_swap;
+    typedef std::true_type is_always_equal;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::string C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#if defined(_LIBCPP_VERSION)
+    {
+        typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
+        static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif // _LIBCPP_VERSION
+    {
+        typedef std::basic_string<char, std::char_traits<char>, some_alloc<char>> C;
+#if TEST_STD_VER >= 14
+    //  In C++14, if POCS is set, swapping the allocator is required not to throw
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#else
+        static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+#endif
+    }
+#if TEST_STD_VER >= 14
+    {
+        typedef std::basic_string<char, std::char_traits<char>, some_alloc2<char>> C;
+    //  if the allocators are always equal, then the swap can be noexcept
+        static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/pointer_string.pass.cpp
new file mode 100644
index 0000000..bb1580d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/pointer_string.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator!=(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const typename S::value_type* lhs, const S& rhs, bool x)
+{
+    assert((lhs != rhs) == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test("", S(""), false);
+  test("", S("abcde"), true);
+  test("", S("abcdefghij"), true);
+  test("", S("abcdefghijklmnopqrst"), true);
+  test("abcde", S(""), true);
+  test("abcde", S("abcde"), false);
+  test("abcde", S("abcdefghij"), true);
+  test("abcde", S("abcdefghijklmnopqrst"), true);
+  test("abcdefghij", S(""), true);
+  test("abcdefghij", S("abcde"), true);
+  test("abcdefghij", S("abcdefghij"), false);
+  test("abcdefghij", S("abcdefghijklmnopqrst"), true);
+  test("abcdefghijklmnopqrst", S(""), true);
+  test("abcdefghijklmnopqrst", S("abcde"), true);
+  test("abcdefghijklmnopqrst", S("abcdefghij"), true);
+  test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_pointer.pass.cpp
new file mode 100644
index 0000000..f2f51e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_pointer.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator!=(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const typename S::value_type* rhs, bool x)
+{
+    assert((lhs != rhs) == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), "", false);
+  test(S(""), "abcde", true);
+  test(S(""), "abcdefghij", true);
+  test(S(""), "abcdefghijklmnopqrst", true);
+  test(S("abcde"), "", true);
+  test(S("abcde"), "abcde", false);
+  test(S("abcde"), "abcdefghij", true);
+  test(S("abcde"), "abcdefghijklmnopqrst", true);
+  test(S("abcdefghij"), "", true);
+  test(S("abcdefghij"), "abcde", true);
+  test(S("abcdefghij"), "abcdefghij", false);
+  test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
+  test(S("abcdefghijklmnopqrst"), "", true);
+  test(S("abcdefghijklmnopqrst"), "abcde", true);
+  test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
+  test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_string.pass.cpp
new file mode 100644
index 0000000..2f74920
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_string.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
+//                   const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const S& rhs, bool x)
+{
+    assert((lhs != rhs) == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), S(""), false);
+  test(S(""), S("abcde"), true);
+  test(S(""), S("abcdefghij"), true);
+  test(S(""), S("abcdefghijklmnopqrst"), true);
+  test(S("abcde"), S(""), true);
+  test(S("abcde"), S("abcde"), false);
+  test(S("abcde"), S("abcdefghij"), true);
+  test(S("abcde"), S("abcdefghijklmnopqrst"), true);
+  test(S("abcdefghij"), S(""), true);
+  test(S("abcdefghij"), S("abcde"), true);
+  test(S("abcdefghij"), S("abcdefghij"), false);
+  test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+  test(S("abcdefghijklmnopqrst"), S(""), true);
+  test(S("abcdefghijklmnopqrst"), S("abcde"), true);
+  test(S("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+  test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_string_view.pass.cpp
new file mode 100644
index 0000000..744c883
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_string_view.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, SV rhs, bool x)
+{
+    assert((lhs != rhs) == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(S(""), SV(""), false);
+  test(S(""), SV("abcde"), true);
+  test(S(""), SV("abcdefghij"), true);
+  test(S(""), SV("abcdefghijklmnopqrst"), true);
+  test(S("abcde"), SV(""), true);
+  test(S("abcde"), SV("abcde"), false);
+  test(S("abcde"), SV("abcdefghij"), true);
+  test(S("abcde"), SV("abcdefghijklmnopqrst"), true);
+  test(S("abcdefghij"), SV(""), true);
+  test(S("abcdefghij"), SV("abcde"), true);
+  test(S("abcdefghij"), SV("abcdefghij"), false);
+  test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), true);
+  test(S("abcdefghijklmnopqrst"), SV(""), true);
+  test(S("abcdefghijklmnopqrst"), SV("abcde"), true);
+  test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), true);
+  test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), false);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_view_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_view_string.pass.cpp
new file mode 100644
index 0000000..7f5bb20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op!=/string_view_string.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV lhs, const S& rhs, bool x)
+{
+    assert((lhs != rhs) == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  typedef std::string_view SV;
+  test(SV(""), S(""), false);
+  test(SV(""), S("abcde"), true);
+  test(SV(""), S("abcdefghij"), true);
+  test(SV(""), S("abcdefghijklmnopqrst"), true);
+  test(SV("abcde"), S(""), true);
+  test(SV("abcde"), S("abcde"), false);
+  test(SV("abcde"), S("abcdefghij"), true);
+  test(SV("abcde"), S("abcdefghijklmnopqrst"), true);
+  test(SV("abcdefghij"), S(""), true);
+  test(SV("abcdefghij"), S("abcde"), true);
+  test(SV("abcdefghij"), S("abcdefghij"), false);
+  test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+  test(SV("abcdefghijklmnopqrst"), S(""), true);
+  test(SV("abcdefghijklmnopqrst"), S("abcde"), true);
+  test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+  test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/allocator_propagation.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/allocator_propagation.pass.cpp
new file mode 100644
index 0000000..1918bcf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/allocator_propagation.pass.cpp
@@ -0,0 +1,205 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// This test ensures that we properly propagate allocators, per https://wg21.link/p1165r1
+
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+template <class T>
+class soccc_allocator {
+  int* soccc_count;
+  int self_soccc_count;
+
+public:
+  using value_type = T;
+
+  constexpr explicit soccc_allocator(int* soccc_count_, int self_coccc_count_ = 0)
+      : soccc_count(soccc_count_), self_soccc_count(self_coccc_count_) {}
+
+  template <class U>
+  constexpr soccc_allocator(const soccc_allocator<U>& a) : soccc_count(a.get_soccc()) {}
+
+  constexpr T* allocate(std::size_t n) { return std::allocator<T>().allocate(n); }
+  constexpr void deallocate(T* p, std::size_t s) { std::allocator<T>().deallocate(p, s); }
+
+  constexpr soccc_allocator select_on_container_copy_construction() const {
+    *soccc_count += 1;
+    return soccc_allocator(soccc_count, self_soccc_count + 1);
+  }
+
+  constexpr auto get_soccc() const { return soccc_count; }
+  constexpr auto get_self_soccc() const { return self_soccc_count; }
+
+  typedef std::true_type propagate_on_container_copy_assignment;
+  typedef std::true_type propagate_on_container_move_assignment;
+  typedef std::true_type propagate_on_container_swap;
+
+  template <class U>
+  constexpr bool operator==(const soccc_allocator<U>& that) const {
+    return soccc_count == that.get_soccc();
+  }
+};
+
+template <class CharT>
+TEST_CONSTEXPR_CXX20 bool test() {
+  using S = std::basic_string<CharT, std::char_traits<CharT>, soccc_allocator<CharT>>;
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs + rhs;
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 1);
+    assert(soccc_lhs == 1);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs + std::move(rhs);
+    assert(r.get_allocator().get_soccc() == &soccc_rhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = std::move(lhs) + rhs;
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = std::move(lhs) + std::move(rhs);
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs + rhs.data();
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 1);
+    assert(soccc_lhs == 1);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs + rhs[0];
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 1);
+    assert(soccc_lhs == 1);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = std::move(lhs) + rhs.data();
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = std::move(lhs) + rhs[0];
+    assert(r.get_allocator().get_soccc() == &soccc_lhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs.data() + rhs;
+    assert(r.get_allocator().get_soccc() == &soccc_rhs);
+    assert(r.get_allocator().get_self_soccc() == 1);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 1);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs[0] + rhs;
+    assert(r.get_allocator().get_soccc() == &soccc_rhs);
+    assert(r.get_allocator().get_self_soccc() == 1);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 1);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs.data() + std::move(rhs);
+    assert(r.get_allocator().get_soccc() == &soccc_rhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+  {
+    int soccc_lhs = 0;
+    int soccc_rhs = 0;
+    S lhs(soccc_allocator<CharT>{&soccc_lhs});
+    S rhs(soccc_allocator<CharT>{&soccc_rhs});
+    auto r = lhs[0] + std::move(rhs);
+    assert(r.get_allocator().get_soccc() == &soccc_rhs);
+    assert(r.get_allocator().get_self_soccc() == 0);
+    assert(soccc_lhs == 0);
+    assert(soccc_rhs == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+#if TEST_STD_VER > 17
+  static_assert(test<char>());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  static_assert(test<wchar_t>());
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/char_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/char_string.pass.cpp
new file mode 100644
index 0000000..8229d57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/char_string.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>
+//   operator+(charT lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(charT lhs, basic_string<charT,traits,Allocator>&& rhs); // constexpr since C++20
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0(typename S::value_type lhs, const S& rhs, const S& x) {
+  assert(lhs + rhs == x);
+}
+
+#if TEST_STD_VER >= 11
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1(typename S::value_type lhs, S&& rhs, const S& x) {
+  assert(lhs + std::move(rhs) == x);
+}
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0('a', S(""), S("a"));
+    test0('a', S("12345"), S("a12345"));
+    test0('a', S("1234567890"), S("a1234567890"));
+    test0('a', S("12345678901234567890"), S("a12345678901234567890"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::string S;
+    test1('a', S(""), S("a"));
+    test1('a', S("12345"), S("a12345"));
+    test1('a', S("1234567890"), S("a1234567890"));
+    test1('a', S("12345678901234567890"), S("a12345678901234567890"));
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>,
+                              min_allocator<char> >
+        S;
+    test0('a', S(""), S("a"));
+    test0('a', S("12345"), S("a12345"));
+    test0('a', S("1234567890"), S("a1234567890"));
+    test0('a', S("12345678901234567890"), S("a12345678901234567890"));
+
+    test1('a', S(""), S("a"));
+    test1('a', S("12345"), S("a12345"));
+    test1('a', S("1234567890"), S("a1234567890"));
+    test1('a', S("12345678901234567890"), S("a12345678901234567890"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/pointer_string.pass.cpp
new file mode 100644
index 0000000..a54024e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/pointer_string.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>
+//   operator+(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(const charT* lhs, basic_string<charT,traits,Allocator>&& rhs); // constexpr since C++20
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0(const typename S::value_type* lhs, const S& rhs, const S& x) {
+  assert(lhs + rhs == x);
+}
+
+#if TEST_STD_VER >= 11
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1(const typename S::value_type* lhs, S&& rhs, const S& x) {
+  assert(lhs + std::move(rhs) == x);
+}
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0("", S(""), S(""));
+    test0("", S("12345"), S("12345"));
+    test0("", S("1234567890"), S("1234567890"));
+    test0("", S("12345678901234567890"), S("12345678901234567890"));
+    test0("abcde", S(""), S("abcde"));
+    test0("abcde", S("12345"), S("abcde12345"));
+    test0("abcde", S("1234567890"), S("abcde1234567890"));
+    test0("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
+    test0("abcdefghij", S(""), S("abcdefghij"));
+    test0("abcdefghij", S("12345"), S("abcdefghij12345"));
+    test0("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
+    test0("abcdefghij", S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test0("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
+    test0("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
+    test0("abcdefghijklmnopqrst", S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test0("abcdefghijklmnopqrst", S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+
+#if TEST_STD_VER >= 11
+  {
+    typedef std::string S;
+    test1("", S(""), S(""));
+    test1("", S("12345"), S("12345"));
+    test1("", S("1234567890"), S("1234567890"));
+    test1("", S("12345678901234567890"), S("12345678901234567890"));
+    test1("abcde", S(""), S("abcde"));
+    test1("abcde", S("12345"), S("abcde12345"));
+    test1("abcde", S("1234567890"), S("abcde1234567890"));
+    test1("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
+    test1("abcdefghij", S(""), S("abcdefghij"));
+    test1("abcdefghij", S("12345"), S("abcdefghij12345"));
+    test1("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
+    test1("abcdefghij", S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test1("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
+    test1("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
+    test1("abcdefghijklmnopqrst", S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test1("abcdefghijklmnopqrst", S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>,
+                              min_allocator<char> >
+        S;
+    test0("", S(""), S(""));
+    test0("", S("12345"), S("12345"));
+    test0("", S("1234567890"), S("1234567890"));
+    test0("", S("12345678901234567890"), S("12345678901234567890"));
+    test0("abcde", S(""), S("abcde"));
+    test0("abcde", S("12345"), S("abcde12345"));
+    test0("abcde", S("1234567890"), S("abcde1234567890"));
+    test0("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
+    test0("abcdefghij", S(""), S("abcdefghij"));
+    test0("abcdefghij", S("12345"), S("abcdefghij12345"));
+    test0("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
+    test0("abcdefghij", S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test0("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
+    test0("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
+    test0("abcdefghijklmnopqrst", S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test0("abcdefghijklmnopqrst", S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test1("", S(""), S(""));
+    test1("", S("12345"), S("12345"));
+    test1("", S("1234567890"), S("1234567890"));
+    test1("", S("12345678901234567890"), S("12345678901234567890"));
+    test1("abcde", S(""), S("abcde"));
+    test1("abcde", S("12345"), S("abcde12345"));
+    test1("abcde", S("1234567890"), S("abcde1234567890"));
+    test1("abcde", S("12345678901234567890"), S("abcde12345678901234567890"));
+    test1("abcdefghij", S(""), S("abcdefghij"));
+    test1("abcdefghij", S("12345"), S("abcdefghij12345"));
+    test1("abcdefghij", S("1234567890"), S("abcdefghij1234567890"));
+    test1("abcdefghij", S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test1("abcdefghijklmnopqrst", S(""), S("abcdefghijklmnopqrst"));
+    test1("abcdefghijklmnopqrst", S("12345"), S("abcdefghijklmnopqrst12345"));
+    test1("abcdefghijklmnopqrst", S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test1("abcdefghijklmnopqrst", S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_char.pass.cpp
new file mode 100644
index 0000000..920f6b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_char.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>
+//   operator+(const basic_string<charT,traits,Allocator>& lhs, charT rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(basic_string<charT,traits,Allocator>&& lhs, charT rhs); // constexpr since C++20
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0(const S& lhs, typename S::value_type rhs, const S& x) {
+  assert(lhs + rhs == x);
+}
+
+#if TEST_STD_VER >= 11
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1(S&& lhs, typename S::value_type rhs, const S& x) {
+  assert(std::move(lhs) + rhs == x);
+}
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0(S(""), '1', S("1"));
+    test0(S("abcde"), '1', S("abcde1"));
+    test0(S("abcdefghij"), '1', S("abcdefghij1"));
+    test0(S("abcdefghijklmnopqrst"), '1', S("abcdefghijklmnopqrst1"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::string S;
+    test1(S(""), '1', S("1"));
+    test1(S("abcde"), '1', S("abcde1"));
+    test1(S("abcdefghij"), '1', S("abcdefghij1"));
+    test1(S("abcdefghijklmnopqrst"), '1', S("abcdefghijklmnopqrst1"));
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>,
+                              min_allocator<char> >
+        S;
+    test0(S(""), '1', S("1"));
+    test0(S("abcde"), '1', S("abcde1"));
+    test0(S("abcdefghij"), '1', S("abcdefghij1"));
+    test0(S("abcdefghijklmnopqrst"), '1', S("abcdefghijklmnopqrst1"));
+
+    test1(S(""), '1', S("1"));
+    test1(S("abcde"), '1', S("abcde1"));
+    test1(S("abcdefghij"), '1', S("abcdefghij1"));
+    test1(S("abcdefghijklmnopqrst"), '1', S("abcdefghijklmnopqrst1"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_pointer.pass.cpp
new file mode 100644
index 0000000..ca0b3bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_pointer.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>
+//   operator+(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(basic_string<charT,traits,Allocator>&& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0(const S& lhs, const typename S::value_type* rhs, const S& x) {
+  assert(lhs + rhs == x);
+}
+
+#if TEST_STD_VER >= 11
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1(S&& lhs, const typename S::value_type* rhs, const S& x) {
+  assert(std::move(lhs) + rhs == x);
+}
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0(S(""), "", S(""));
+    test0(S(""), "12345", S("12345"));
+    test0(S(""), "1234567890", S("1234567890"));
+    test0(S(""), "12345678901234567890", S("12345678901234567890"));
+    test0(S("abcde"), "", S("abcde"));
+    test0(S("abcde"), "12345", S("abcde12345"));
+    test0(S("abcde"), "1234567890", S("abcde1234567890"));
+    test0(S("abcde"), "12345678901234567890", S("abcde12345678901234567890"));
+    test0(S("abcdefghij"), "", S("abcdefghij"));
+    test0(S("abcdefghij"), "12345", S("abcdefghij12345"));
+    test0(S("abcdefghij"), "1234567890", S("abcdefghij1234567890"));
+    test0(S("abcdefghij"), "12345678901234567890",
+          S("abcdefghij12345678901234567890"));
+    test0(S("abcdefghijklmnopqrst"), "", S("abcdefghijklmnopqrst"));
+    test0(S("abcdefghijklmnopqrst"), "12345", S("abcdefghijklmnopqrst12345"));
+    test0(S("abcdefghijklmnopqrst"), "1234567890",
+          S("abcdefghijklmnopqrst1234567890"));
+    test0(S("abcdefghijklmnopqrst"), "12345678901234567890",
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::string S;
+    test1(S(""), "", S(""));
+    test1(S(""), "12345", S("12345"));
+    test1(S(""), "1234567890", S("1234567890"));
+    test1(S(""), "12345678901234567890", S("12345678901234567890"));
+    test1(S("abcde"), "", S("abcde"));
+    test1(S("abcde"), "12345", S("abcde12345"));
+    test1(S("abcde"), "1234567890", S("abcde1234567890"));
+    test1(S("abcde"), "12345678901234567890", S("abcde12345678901234567890"));
+    test1(S("abcdefghij"), "", S("abcdefghij"));
+    test1(S("abcdefghij"), "12345", S("abcdefghij12345"));
+    test1(S("abcdefghij"), "1234567890", S("abcdefghij1234567890"));
+    test1(S("abcdefghij"), "12345678901234567890",
+          S("abcdefghij12345678901234567890"));
+    test1(S("abcdefghijklmnopqrst"), "", S("abcdefghijklmnopqrst"));
+    test1(S("abcdefghijklmnopqrst"), "12345", S("abcdefghijklmnopqrst12345"));
+    test1(S("abcdefghijklmnopqrst"), "1234567890",
+          S("abcdefghijklmnopqrst1234567890"));
+    test1(S("abcdefghijklmnopqrst"), "12345678901234567890",
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>,
+                              min_allocator<char> >
+        S;
+    test0(S(""), "", S(""));
+    test0(S(""), "12345", S("12345"));
+    test0(S(""), "1234567890", S("1234567890"));
+    test0(S(""), "12345678901234567890", S("12345678901234567890"));
+    test0(S("abcde"), "", S("abcde"));
+    test0(S("abcde"), "12345", S("abcde12345"));
+    test0(S("abcde"), "1234567890", S("abcde1234567890"));
+    test0(S("abcde"), "12345678901234567890", S("abcde12345678901234567890"));
+    test0(S("abcdefghij"), "", S("abcdefghij"));
+    test0(S("abcdefghij"), "12345", S("abcdefghij12345"));
+    test0(S("abcdefghij"), "1234567890", S("abcdefghij1234567890"));
+    test0(S("abcdefghij"), "12345678901234567890",
+          S("abcdefghij12345678901234567890"));
+    test0(S("abcdefghijklmnopqrst"), "", S("abcdefghijklmnopqrst"));
+    test0(S("abcdefghijklmnopqrst"), "12345", S("abcdefghijklmnopqrst12345"));
+    test0(S("abcdefghijklmnopqrst"), "1234567890",
+          S("abcdefghijklmnopqrst1234567890"));
+    test0(S("abcdefghijklmnopqrst"), "12345678901234567890",
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test1(S(""), "", S(""));
+    test1(S(""), "12345", S("12345"));
+    test1(S(""), "1234567890", S("1234567890"));
+    test1(S(""), "12345678901234567890", S("12345678901234567890"));
+    test1(S("abcde"), "", S("abcde"));
+    test1(S("abcde"), "12345", S("abcde12345"));
+    test1(S("abcde"), "1234567890", S("abcde1234567890"));
+    test1(S("abcde"), "12345678901234567890", S("abcde12345678901234567890"));
+    test1(S("abcdefghij"), "", S("abcdefghij"));
+    test1(S("abcdefghij"), "12345", S("abcdefghij12345"));
+    test1(S("abcdefghij"), "1234567890", S("abcdefghij1234567890"));
+    test1(S("abcdefghij"), "12345678901234567890",
+          S("abcdefghij12345678901234567890"));
+    test1(S("abcdefghijklmnopqrst"), "", S("abcdefghijklmnopqrst"));
+    test1(S("abcdefghijklmnopqrst"), "12345", S("abcdefghijklmnopqrst12345"));
+    test1(S("abcdefghijklmnopqrst"), "1234567890",
+          S("abcdefghijklmnopqrst1234567890"));
+    test1(S("abcdefghijklmnopqrst"), "12345678901234567890",
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_string.pass.cpp
new file mode 100644
index 0000000..7597c62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_op+/string_string.pass.cpp
@@ -0,0 +1,258 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>
+//   operator+(const basic_string<charT,traits,Allocator>& lhs,
+//             const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(const basic_string<charT,traits,Allocator>&& lhs,
+//             const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(const basic_string<charT,traits,Allocator>& lhs,
+//             const basic_string<charT,traits,Allocator>&& rhs); // constexpr since C++20
+
+// template<class charT, class traits, class Allocator>
+//   basic_string<charT,traits,Allocator>&&
+//   operator+(const basic_string<charT,traits,Allocator>&& lhs,
+//             const basic_string<charT,traits,Allocator>&& rhs); // constexpr since C++20
+
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0(const S& lhs, const S& rhs, const S& x) {
+  assert(lhs + rhs == x);
+}
+
+#if TEST_STD_VER >= 11
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1(S&& lhs, const S& rhs, const S& x) {
+  assert(std::move(lhs) + rhs == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2(const S& lhs, S&& rhs, const S& x) {
+  assert(lhs + std::move(rhs) == x);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3(S&& lhs, S&& rhs, const S& x) {
+  assert(std::move(lhs) + std::move(rhs) == x);
+}
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0(S(""), S(""), S(""));
+    test0(S(""), S("12345"), S("12345"));
+    test0(S(""), S("1234567890"), S("1234567890"));
+    test0(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test0(S("abcde"), S(""), S("abcde"));
+    test0(S("abcde"), S("12345"), S("abcde12345"));
+    test0(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test0(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test0(S("abcdefghij"), S(""), S("abcdefghij"));
+    test0(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test0(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test0(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test0(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test0(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test0(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test0(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::string S;
+    test1(S(""), S(""), S(""));
+    test1(S(""), S("12345"), S("12345"));
+    test1(S(""), S("1234567890"), S("1234567890"));
+    test1(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test1(S("abcde"), S(""), S("abcde"));
+    test1(S("abcde"), S("12345"), S("abcde12345"));
+    test1(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test1(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test1(S("abcdefghij"), S(""), S("abcdefghij"));
+    test1(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test1(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test1(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test1(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test1(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test1(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test1(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test2(S(""), S(""), S(""));
+    test2(S(""), S("12345"), S("12345"));
+    test2(S(""), S("1234567890"), S("1234567890"));
+    test2(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test2(S("abcde"), S(""), S("abcde"));
+    test2(S("abcde"), S("12345"), S("abcde12345"));
+    test2(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test2(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test2(S("abcdefghij"), S(""), S("abcdefghij"));
+    test2(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test2(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test2(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test2(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test2(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test2(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test2(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test3(S(""), S(""), S(""));
+    test3(S(""), S("12345"), S("12345"));
+    test3(S(""), S("1234567890"), S("1234567890"));
+    test3(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test3(S("abcde"), S(""), S("abcde"));
+    test3(S("abcde"), S("12345"), S("abcde12345"));
+    test3(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test3(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test3(S("abcdefghij"), S(""), S("abcdefghij"));
+    test3(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test3(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test3(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test3(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test3(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test3(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test3(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+  {
+    typedef std::basic_string<char, std::char_traits<char>,
+                              min_allocator<char> >
+        S;
+    test0(S(""), S(""), S(""));
+    test0(S(""), S("12345"), S("12345"));
+    test0(S(""), S("1234567890"), S("1234567890"));
+    test0(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test0(S("abcde"), S(""), S("abcde"));
+    test0(S("abcde"), S("12345"), S("abcde12345"));
+    test0(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test0(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test0(S("abcdefghij"), S(""), S("abcdefghij"));
+    test0(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test0(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test0(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test0(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test0(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test0(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test0(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test1(S(""), S(""), S(""));
+    test1(S(""), S("12345"), S("12345"));
+    test1(S(""), S("1234567890"), S("1234567890"));
+    test1(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test1(S("abcde"), S(""), S("abcde"));
+    test1(S("abcde"), S("12345"), S("abcde12345"));
+    test1(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test1(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test1(S("abcdefghij"), S(""), S("abcdefghij"));
+    test1(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test1(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test1(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test1(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test1(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test1(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test1(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test2(S(""), S(""), S(""));
+    test2(S(""), S("12345"), S("12345"));
+    test2(S(""), S("1234567890"), S("1234567890"));
+    test2(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test2(S("abcde"), S(""), S("abcde"));
+    test2(S("abcde"), S("12345"), S("abcde12345"));
+    test2(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test2(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test2(S("abcdefghij"), S(""), S("abcdefghij"));
+    test2(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test2(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test2(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test2(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test2(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test2(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test2(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+
+    test3(S(""), S(""), S(""));
+    test3(S(""), S("12345"), S("12345"));
+    test3(S(""), S("1234567890"), S("1234567890"));
+    test3(S(""), S("12345678901234567890"), S("12345678901234567890"));
+    test3(S("abcde"), S(""), S("abcde"));
+    test3(S("abcde"), S("12345"), S("abcde12345"));
+    test3(S("abcde"), S("1234567890"), S("abcde1234567890"));
+    test3(S("abcde"), S("12345678901234567890"),
+          S("abcde12345678901234567890"));
+    test3(S("abcdefghij"), S(""), S("abcdefghij"));
+    test3(S("abcdefghij"), S("12345"), S("abcdefghij12345"));
+    test3(S("abcdefghij"), S("1234567890"), S("abcdefghij1234567890"));
+    test3(S("abcdefghij"), S("12345678901234567890"),
+          S("abcdefghij12345678901234567890"));
+    test3(S("abcdefghijklmnopqrst"), S(""), S("abcdefghijklmnopqrst"));
+    test3(S("abcdefghijklmnopqrst"), S("12345"),
+          S("abcdefghijklmnopqrst12345"));
+    test3(S("abcdefghijklmnopqrst"), S("1234567890"),
+          S("abcdefghijklmnopqrst1234567890"));
+    test3(S("abcdefghijklmnopqrst"), S("12345678901234567890"),
+          S("abcdefghijklmnopqrst12345678901234567890"));
+  }
+#endif // TEST_STD_VER >= 11
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/pointer_string.pass.cpp
new file mode 100644
index 0000000..32ad033
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/pointer_string.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator==(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const typename S::value_type* lhs, const S& rhs, bool x)
+{
+    assert((lhs == rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test("", S(""), true);
+    test("", S("abcde"), false);
+    test("", S("abcdefghij"), false);
+    test("", S("abcdefghijklmnopqrst"), false);
+    test("abcde", S(""), false);
+    test("abcde", S("abcde"), true);
+    test("abcde", S("abcdefghij"), false);
+    test("abcde", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghij", S(""), false);
+    test("abcdefghij", S("abcde"), false);
+    test("abcdefghij", S("abcdefghij"), true);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghijklmnopqrst", S(""), false);
+    test("abcdefghijklmnopqrst", S("abcde"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test("", S(""), true);
+    test("", S("abcde"), false);
+    test("", S("abcdefghij"), false);
+    test("", S("abcdefghijklmnopqrst"), false);
+    test("abcde", S(""), false);
+    test("abcde", S("abcde"), true);
+    test("abcde", S("abcdefghij"), false);
+    test("abcde", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghij", S(""), false);
+    test("abcdefghij", S("abcde"), false);
+    test("abcdefghij", S("abcdefghij"), true);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghijklmnopqrst", S(""), false);
+    test("abcdefghijklmnopqrst", S("abcde"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_pointer.pass.cpp
new file mode 100644
index 0000000..2b38fd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_pointer.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator==(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const typename S::value_type* rhs, bool x)
+{
+    assert((lhs == rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), "", true);
+    test(S(""), "abcde", false);
+    test(S(""), "abcdefghij", false);
+    test(S(""), "abcdefghijklmnopqrst", false);
+    test(S("abcde"), "", false);
+    test(S("abcde"), "abcde", true);
+    test(S("abcde"), "abcdefghij", false);
+    test(S("abcde"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghij"), "", false);
+    test(S("abcdefghij"), "abcde", false);
+    test(S("abcdefghij"), "abcdefghij", true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghijklmnopqrst"), "", false);
+    test(S("abcdefghijklmnopqrst"), "abcde", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), "", true);
+    test(S(""), "abcde", false);
+    test(S(""), "abcdefghij", false);
+    test(S(""), "abcdefghijklmnopqrst", false);
+    test(S("abcde"), "", false);
+    test(S("abcde"), "abcde", true);
+    test(S("abcde"), "abcdefghij", false);
+    test(S("abcde"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghij"), "", false);
+    test(S("abcdefghij"), "abcde", false);
+    test(S("abcdefghij"), "abcdefghij", true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghijklmnopqrst"), "", false);
+    test(S("abcdefghijklmnopqrst"), "abcde", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_string.pass.cpp
new file mode 100644
index 0000000..bbc0b15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator==(const basic_string<charT,traits,Allocator>& lhs,
+//                   const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const S& rhs, bool x)
+{
+    assert((lhs == rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""), true);
+    test(S(""), S("abcde"), false);
+    test(S(""), S("abcdefghij"), false);
+    test(S(""), S("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), S(""), false);
+    test(S("abcde"), S("abcde"), true);
+    test(S("abcde"), S("abcdefghij"), false);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), S(""), false);
+    test(S("abcdefghij"), S("abcde"), false);
+    test(S("abcdefghij"), S("abcdefghij"), true);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), S(""), false);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""), true);
+    test(S(""), S("abcde"), false);
+    test(S(""), S("abcdefghij"), false);
+    test(S(""), S("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), S(""), false);
+    test(S("abcde"), S("abcde"), true);
+    test(S("abcde"), S("abcdefghij"), false);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), S(""), false);
+    test(S("abcdefghij"), S("abcde"), false);
+    test(S("abcdefghij"), S("abcdefghij"), true);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), S(""), false);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_string_view.pass.cpp
new file mode 100644
index 0000000..4ef18a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_string_view.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, SV rhs, bool x)
+{
+    assert((lhs == rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), true);
+    test(S(""), SV("abcde"), false);
+    test(S(""), SV("abcdefghij"), false);
+    test(S(""), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), SV(""), false);
+    test(S("abcde"), SV("abcde"), true);
+    test(S("abcde"), SV("abcdefghij"), false);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), SV(""), false);
+    test(S("abcdefghij"), SV("abcde"), false);
+    test(S("abcdefghij"), SV("abcdefghij"), true);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), SV(""), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string     <char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(S(""), SV(""), true);
+    test(S(""), SV("abcde"), false);
+    test(S(""), SV("abcdefghij"), false);
+    test(S(""), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), SV(""), false);
+    test(S("abcde"), SV("abcde"), true);
+    test(S("abcde"), SV("abcdefghij"), false);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), SV(""), false);
+    test(S("abcdefghij"), SV("abcde"), false);
+    test(S("abcdefghij"), SV("abcdefghij"), true);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), SV(""), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_view_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_view_string.pass.cpp
new file mode 100644
index 0000000..ef741d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_operator==/string_view_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV lhs, const S& rhs, bool x)
+{
+    assert((lhs == rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(SV(""), S(""), true);
+    test(SV(""), S("abcde"), false);
+    test(SV(""), S("abcdefghij"), false);
+    test(SV(""), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcde"), S(""), false);
+    test(SV("abcde"), S("abcde"), true);
+    test(SV("abcde"), S("abcdefghij"), false);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghij"), S(""), false);
+    test(SV("abcdefghij"), S("abcde"), false);
+    test(SV("abcdefghij"), S("abcdefghij"), true);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghijklmnopqrst"), S(""), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(SV(""), S(""), true);
+    test(SV(""), S("abcde"), false);
+    test(SV(""), S("abcdefghij"), false);
+    test(SV(""), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcde"), S(""), false);
+    test(SV("abcde"), S("abcde"), true);
+    test(SV("abcde"), S("abcdefghij"), false);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghij"), S(""), false);
+    test(SV("abcdefghij"), S("abcde"), false);
+    test(SV("abcdefghij"), S("abcdefghij"), true);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghijklmnopqrst"), S(""), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/pointer_string.pass.cpp
new file mode 100644
index 0000000..60b473c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/pointer_string.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator>(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const typename S::value_type* lhs, const S& rhs, bool x)
+{
+    assert((lhs > rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test("", S(""), false);
+    test("", S("abcde"), false);
+    test("", S("abcdefghij"), false);
+    test("", S("abcdefghijklmnopqrst"), false);
+    test("abcde", S(""), true);
+    test("abcde", S("abcde"), false);
+    test("abcde", S("abcdefghij"), false);
+    test("abcde", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghij", S(""), true);
+    test("abcdefghij", S("abcde"), true);
+    test("abcdefghij", S("abcdefghij"), false);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghijklmnopqrst", S(""), true);
+    test("abcdefghijklmnopqrst", S("abcde"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test("", S(""), false);
+    test("", S("abcde"), false);
+    test("", S("abcdefghij"), false);
+    test("", S("abcdefghijklmnopqrst"), false);
+    test("abcde", S(""), true);
+    test("abcde", S("abcde"), false);
+    test("abcde", S("abcdefghij"), false);
+    test("abcde", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghij", S(""), true);
+    test("abcdefghij", S("abcde"), true);
+    test("abcdefghij", S("abcdefghij"), false);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghijklmnopqrst", S(""), true);
+    test("abcdefghijklmnopqrst", S("abcde"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_pointer.pass.cpp
new file mode 100644
index 0000000..2ec2545
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_pointer.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator>(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const typename S::value_type* rhs, bool x)
+{
+    assert((lhs > rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), "", false);
+    test(S(""), "abcde", false);
+    test(S(""), "abcdefghij", false);
+    test(S(""), "abcdefghijklmnopqrst", false);
+    test(S("abcde"), "", true);
+    test(S("abcde"), "abcde", false);
+    test(S("abcde"), "abcdefghij", false);
+    test(S("abcde"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghij"), "", true);
+    test(S("abcdefghij"), "abcde", true);
+    test(S("abcdefghij"), "abcdefghij", false);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghijklmnopqrst"), "", true);
+    test(S("abcdefghijklmnopqrst"), "abcde", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), "", false);
+    test(S(""), "abcde", false);
+    test(S(""), "abcdefghij", false);
+    test(S(""), "abcdefghijklmnopqrst", false);
+    test(S("abcde"), "", true);
+    test(S("abcde"), "abcde", false);
+    test(S("abcde"), "abcdefghij", false);
+    test(S("abcde"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghij"), "", true);
+    test(S("abcdefghij"), "abcde", true);
+    test(S("abcdefghij"), "abcdefghij", false);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghijklmnopqrst"), "", true);
+    test(S("abcdefghijklmnopqrst"), "abcde", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_string.pass.cpp
new file mode 100644
index 0000000..95bb876
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator>(const basic_string<charT,traits,Allocator>& lhs,
+//                  const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const S& rhs, bool x)
+{
+    assert((lhs > rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""), false);
+    test(S(""), S("abcde"), false);
+    test(S(""), S("abcdefghij"), false);
+    test(S(""), S("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), S(""), true);
+    test(S("abcde"), S("abcde"), false);
+    test(S("abcde"), S("abcdefghij"), false);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), S(""), true);
+    test(S("abcdefghij"), S("abcde"), true);
+    test(S("abcdefghij"), S("abcdefghij"), false);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), S(""), true);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""), false);
+    test(S(""), S("abcde"), false);
+    test(S(""), S("abcdefghij"), false);
+    test(S(""), S("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), S(""), true);
+    test(S("abcde"), S("abcde"), false);
+    test(S("abcde"), S("abcdefghij"), false);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), S(""), true);
+    test(S("abcdefghij"), S("abcde"), true);
+    test(S("abcdefghij"), S("abcdefghij"), false);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), S(""), true);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_string_view.pass.cpp
new file mode 100644
index 0000000..f5767ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_string_view.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, SV rhs, bool x)
+{
+    assert((lhs > rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), false);
+    test(S(""), SV("abcde"), false);
+    test(S(""), SV("abcdefghij"), false);
+    test(S(""), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), SV(""), true);
+    test(S("abcde"), SV("abcde"), false);
+    test(S("abcde"), SV("abcdefghij"), false);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), SV(""), true);
+    test(S("abcdefghij"), SV("abcde"), true);
+    test(S("abcdefghij"), SV("abcdefghij"), false);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), SV(""), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string     <char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(S(""), SV(""), false);
+    test(S(""), SV("abcde"), false);
+    test(S(""), SV("abcdefghij"), false);
+    test(S(""), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), SV(""), true);
+    test(S("abcde"), SV("abcde"), false);
+    test(S("abcde"), SV("abcdefghij"), false);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), SV(""), true);
+    test(S("abcdefghij"), SV("abcde"), true);
+    test(S("abcdefghij"), SV("abcdefghij"), false);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), SV(""), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_view_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_view_string.pass.cpp
new file mode 100644
index 0000000..5e549a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt/string_view_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV lhs, const S& rhs, bool x)
+{
+    assert((lhs > rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(SV(""), S(""), false);
+    test(SV(""), S("abcde"), false);
+    test(SV(""), S("abcdefghij"), false);
+    test(SV(""), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcde"), S(""), true);
+    test(SV("abcde"), S("abcde"), false);
+    test(SV("abcde"), S("abcdefghij"), false);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghij"), S(""), true);
+    test(SV("abcdefghij"), S("abcde"), true);
+    test(SV("abcdefghij"), S("abcdefghij"), false);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghijklmnopqrst"), S(""), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string     <char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(SV(""), S(""), false);
+    test(SV(""), S("abcde"), false);
+    test(SV(""), S("abcdefghij"), false);
+    test(SV(""), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcde"), S(""), true);
+    test(SV("abcde"), S("abcde"), false);
+    test(SV("abcde"), S("abcdefghij"), false);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghij"), S(""), true);
+    test(SV("abcdefghij"), S("abcde"), true);
+    test(SV("abcdefghij"), S("abcdefghij"), false);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghijklmnopqrst"), S(""), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/pointer_string.pass.cpp
new file mode 100644
index 0000000..fdf1c9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/pointer_string.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator>=(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const typename S::value_type* lhs, const S& rhs, bool x)
+{
+    assert((lhs >= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test("", S(""), true);
+    test("", S("abcde"), false);
+    test("", S("abcdefghij"), false);
+    test("", S("abcdefghijklmnopqrst"), false);
+    test("abcde", S(""), true);
+    test("abcde", S("abcde"), true);
+    test("abcde", S("abcdefghij"), false);
+    test("abcde", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghij", S(""), true);
+    test("abcdefghij", S("abcde"), true);
+    test("abcdefghij", S("abcdefghij"), true);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghijklmnopqrst", S(""), true);
+    test("abcdefghijklmnopqrst", S("abcde"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test("", S(""), true);
+    test("", S("abcde"), false);
+    test("", S("abcdefghij"), false);
+    test("", S("abcdefghijklmnopqrst"), false);
+    test("abcde", S(""), true);
+    test("abcde", S("abcde"), true);
+    test("abcde", S("abcdefghij"), false);
+    test("abcde", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghij", S(""), true);
+    test("abcdefghij", S("abcde"), true);
+    test("abcdefghij", S("abcdefghij"), true);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), false);
+    test("abcdefghijklmnopqrst", S(""), true);
+    test("abcdefghijklmnopqrst", S("abcde"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), true);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_pointer.pass.cpp
new file mode 100644
index 0000000..279f91f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_pointer.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator>=(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const typename S::value_type* rhs, bool x)
+{
+    assert((lhs >= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), "", true);
+    test(S(""), "abcde", false);
+    test(S(""), "abcdefghij", false);
+    test(S(""), "abcdefghijklmnopqrst", false);
+    test(S("abcde"), "", true);
+    test(S("abcde"), "abcde", true);
+    test(S("abcde"), "abcdefghij", false);
+    test(S("abcde"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghij"), "", true);
+    test(S("abcdefghij"), "abcde", true);
+    test(S("abcdefghij"), "abcdefghij", true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghijklmnopqrst"), "", true);
+    test(S("abcdefghijklmnopqrst"), "abcde", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), "", true);
+    test(S(""), "abcde", false);
+    test(S(""), "abcdefghij", false);
+    test(S(""), "abcdefghijklmnopqrst", false);
+    test(S("abcde"), "", true);
+    test(S("abcde"), "abcde", true);
+    test(S("abcde"), "abcdefghij", false);
+    test(S("abcde"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghij"), "", true);
+    test(S("abcdefghij"), "abcde", true);
+    test(S("abcdefghij"), "abcdefghij", true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", false);
+    test(S("abcdefghijklmnopqrst"), "", true);
+    test(S("abcdefghijklmnopqrst"), "abcde", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", true);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_string.pass.cpp
new file mode 100644
index 0000000..e952ab5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator>=(const basic_string<charT,traits,Allocator>& lhs,
+//                  const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const S& rhs, bool x)
+{
+    assert((lhs >= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""), true);
+    test(S(""), S("abcde"), false);
+    test(S(""), S("abcdefghij"), false);
+    test(S(""), S("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), S(""), true);
+    test(S("abcde"), S("abcde"), true);
+    test(S("abcde"), S("abcdefghij"), false);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), S(""), true);
+    test(S("abcdefghij"), S("abcde"), true);
+    test(S("abcdefghij"), S("abcdefghij"), true);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), S(""), true);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""), true);
+    test(S(""), S("abcde"), false);
+    test(S(""), S("abcdefghij"), false);
+    test(S(""), S("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), S(""), true);
+    test(S("abcde"), S("abcde"), true);
+    test(S("abcde"), S("abcdefghij"), false);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), S(""), true);
+    test(S("abcdefghij"), S("abcde"), true);
+    test(S("abcdefghij"), S("abcdefghij"), true);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), S(""), true);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_string_view.pass.cpp
new file mode 100644
index 0000000..fa7404c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_string_view.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, SV rhs, bool x)
+{
+    assert((lhs >= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), true);
+    test(S(""), SV("abcde"), false);
+    test(S(""), SV("abcdefghij"), false);
+    test(S(""), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), SV(""), true);
+    test(S("abcde"), SV("abcde"), true);
+    test(S("abcde"), SV("abcdefghij"), false);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), SV(""), true);
+    test(S("abcdefghij"), SV("abcde"), true);
+    test(S("abcdefghij"), SV("abcdefghij"), true);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), SV(""), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(S(""), SV(""), true);
+    test(S(""), SV("abcde"), false);
+    test(S(""), SV("abcdefghij"), false);
+    test(S(""), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcde"), SV(""), true);
+    test(S("abcde"), SV("abcde"), true);
+    test(S("abcde"), SV("abcdefghij"), false);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghij"), SV(""), true);
+    test(S("abcdefghij"), SV("abcde"), true);
+    test(S("abcdefghij"), SV("abcdefghij"), true);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), false);
+    test(S("abcdefghijklmnopqrst"), SV(""), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), true);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_view_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_view_string.pass.cpp
new file mode 100644
index 0000000..850fc3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_opgt=/string_view_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV lhs, const S& rhs, bool x)
+{
+    assert((lhs >= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(SV(""), S(""), true);
+    test(SV(""), S("abcde"), false);
+    test(SV(""), S("abcdefghij"), false);
+    test(SV(""), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcde"), S(""), true);
+    test(SV("abcde"), S("abcde"), true);
+    test(SV("abcde"), S("abcdefghij"), false);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghij"), S(""), true);
+    test(SV("abcdefghij"), S("abcde"), true);
+    test(SV("abcdefghij"), S("abcdefghij"), true);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghijklmnopqrst"), S(""), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(SV(""), S(""), true);
+    test(SV(""), S("abcde"), false);
+    test(SV(""), S("abcdefghij"), false);
+    test(SV(""), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcde"), S(""), true);
+    test(SV("abcde"), S("abcde"), true);
+    test(SV("abcde"), S("abcdefghij"), false);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghij"), S(""), true);
+    test(SV("abcdefghij"), S("abcde"), true);
+    test(SV("abcdefghij"), S("abcdefghij"), true);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), false);
+    test(SV("abcdefghijklmnopqrst"), S(""), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), true);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/pointer_string.pass.cpp
new file mode 100644
index 0000000..7bab5f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/pointer_string.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const typename S::value_type* lhs, const S& rhs, bool x)
+{
+    assert((lhs < rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test("", S(""), false);
+    test("", S("abcde"), true);
+    test("", S("abcdefghij"), true);
+    test("", S("abcdefghijklmnopqrst"), true);
+    test("abcde", S(""), false);
+    test("abcde", S("abcde"), false);
+    test("abcde", S("abcdefghij"), true);
+    test("abcde", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghij", S(""), false);
+    test("abcdefghij", S("abcde"), false);
+    test("abcdefghij", S("abcdefghij"), false);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghijklmnopqrst", S(""), false);
+    test("abcdefghijklmnopqrst", S("abcde"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test("", S(""), false);
+    test("", S("abcde"), true);
+    test("", S("abcdefghij"), true);
+    test("", S("abcdefghijklmnopqrst"), true);
+    test("abcde", S(""), false);
+    test("abcde", S("abcde"), false);
+    test("abcde", S("abcdefghij"), true);
+    test("abcde", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghij", S(""), false);
+    test("abcdefghij", S("abcde"), false);
+    test("abcdefghij", S("abcdefghij"), false);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghijklmnopqrst", S(""), false);
+    test("abcdefghijklmnopqrst", S("abcde"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_pointer.pass.cpp
new file mode 100644
index 0000000..0e5ae95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_pointer.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const typename S::value_type* rhs, bool x)
+{
+    assert((lhs < rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), "", false);
+    test(S(""), "abcde", true);
+    test(S(""), "abcdefghij", true);
+    test(S(""), "abcdefghijklmnopqrst", true);
+    test(S("abcde"), "", false);
+    test(S("abcde"), "abcde", false);
+    test(S("abcde"), "abcdefghij", true);
+    test(S("abcde"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghij"), "", false);
+    test(S("abcdefghij"), "abcde", false);
+    test(S("abcdefghij"), "abcdefghij", false);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghijklmnopqrst"), "", false);
+    test(S("abcdefghijklmnopqrst"), "abcde", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), "", false);
+    test(S(""), "abcde", true);
+    test(S(""), "abcdefghij", true);
+    test(S(""), "abcdefghijklmnopqrst", true);
+    test(S("abcde"), "", false);
+    test(S("abcde"), "abcde", false);
+    test(S("abcde"), "abcdefghij", true);
+    test(S("abcde"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghij"), "", false);
+    test(S("abcdefghij"), "abcde", false);
+    test(S("abcdefghij"), "abcdefghij", false);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghijklmnopqrst"), "", false);
+    test(S("abcdefghijklmnopqrst"), "abcde", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_string.pass.cpp
new file mode 100644
index 0000000..3955ae4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<(const basic_string<charT,traits,Allocator>& lhs,
+//                  const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const S& rhs, bool x)
+{
+    assert((lhs < rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""), false);
+    test(S(""), S("abcde"), true);
+    test(S(""), S("abcdefghij"), true);
+    test(S(""), S("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), S(""), false);
+    test(S("abcde"), S("abcde"), false);
+    test(S("abcde"), S("abcdefghij"), true);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), S(""), false);
+    test(S("abcdefghij"), S("abcde"), false);
+    test(S("abcdefghij"), S("abcdefghij"), false);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), S(""), false);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""), false);
+    test(S(""), S("abcde"), true);
+    test(S(""), S("abcdefghij"), true);
+    test(S(""), S("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), S(""), false);
+    test(S("abcde"), S("abcde"), false);
+    test(S("abcde"), S("abcdefghij"), true);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), S(""), false);
+    test(S("abcdefghij"), S("abcde"), false);
+    test(S("abcdefghij"), S("abcdefghij"), false);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), S(""), false);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_string_view.pass.cpp
new file mode 100644
index 0000000..e04d687
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_string_view.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, SV rhs, bool x)
+{
+    assert((lhs < rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), false);
+    test(S(""), SV("abcde"), true);
+    test(S(""), SV("abcdefghij"), true);
+    test(S(""), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), SV(""), false);
+    test(S("abcde"), SV("abcde"), false);
+    test(S("abcde"), SV("abcdefghij"), true);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), SV(""), false);
+    test(S("abcdefghij"), SV("abcde"), false);
+    test(S("abcdefghij"), SV("abcdefghij"), false);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), SV(""), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(S(""), SV(""), false);
+    test(S(""), SV("abcde"), true);
+    test(S(""), SV("abcdefghij"), true);
+    test(S(""), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), SV(""), false);
+    test(S("abcde"), SV("abcde"), false);
+    test(S("abcde"), SV("abcdefghij"), true);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), SV(""), false);
+    test(S("abcdefghij"), SV("abcde"), false);
+    test(S("abcdefghij"), SV("abcdefghij"), false);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), SV(""), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_view_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_view_string.pass.cpp
new file mode 100644
index 0000000..0babe40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt/string_view_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV lhs, const S& rhs, bool x)
+{
+    assert((lhs < rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(SV(""), S(""), false);
+    test(SV(""), S("abcde"), true);
+    test(SV(""), S("abcdefghij"), true);
+    test(SV(""), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcde"), S(""), false);
+    test(SV("abcde"), S("abcde"), false);
+    test(SV("abcde"), S("abcdefghij"), true);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghij"), S(""), false);
+    test(SV("abcdefghij"), S("abcde"), false);
+    test(SV("abcdefghij"), S("abcdefghij"), false);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghijklmnopqrst"), S(""), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(SV(""), S(""), false);
+    test(SV(""), S("abcde"), true);
+    test(SV(""), S("abcdefghij"), true);
+    test(SV(""), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcde"), S(""), false);
+    test(SV("abcde"), S("abcde"), false);
+    test(SV("abcde"), S("abcdefghij"), true);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghij"), S(""), false);
+    test(SV("abcdefghij"), S("abcde"), false);
+    test(SV("abcdefghij"), S("abcdefghij"), false);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghijklmnopqrst"), S(""), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), false);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/pointer_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/pointer_string.pass.cpp
new file mode 100644
index 0000000..0ea10d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/pointer_string.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<=(const charT* lhs, const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const typename S::value_type* lhs, const S& rhs, bool x)
+{
+    assert((lhs <= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test("", S(""), true);
+    test("", S("abcde"), true);
+    test("", S("abcdefghij"), true);
+    test("", S("abcdefghijklmnopqrst"), true);
+    test("abcde", S(""), false);
+    test("abcde", S("abcde"), true);
+    test("abcde", S("abcdefghij"), true);
+    test("abcde", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghij", S(""), false);
+    test("abcdefghij", S("abcde"), false);
+    test("abcdefghij", S("abcdefghij"), true);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghijklmnopqrst", S(""), false);
+    test("abcdefghijklmnopqrst", S("abcde"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test("", S(""), true);
+    test("", S("abcde"), true);
+    test("", S("abcdefghij"), true);
+    test("", S("abcdefghijklmnopqrst"), true);
+    test("abcde", S(""), false);
+    test("abcde", S("abcde"), true);
+    test("abcde", S("abcdefghij"), true);
+    test("abcde", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghij", S(""), false);
+    test("abcdefghij", S("abcde"), false);
+    test("abcdefghij", S("abcdefghij"), true);
+    test("abcdefghij", S("abcdefghijklmnopqrst"), true);
+    test("abcdefghijklmnopqrst", S(""), false);
+    test("abcdefghijklmnopqrst", S("abcde"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghij"), false);
+    test("abcdefghijklmnopqrst", S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_pointer.pass.cpp
new file mode 100644
index 0000000..38155cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_pointer.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<=(const basic_string<charT,traits,Allocator>& lhs, const charT* rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const typename S::value_type* rhs, bool x)
+{
+    assert((lhs <= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), "", true);
+    test(S(""), "abcde", true);
+    test(S(""), "abcdefghij", true);
+    test(S(""), "abcdefghijklmnopqrst", true);
+    test(S("abcde"), "", false);
+    test(S("abcde"), "abcde", true);
+    test(S("abcde"), "abcdefghij", true);
+    test(S("abcde"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghij"), "", false);
+    test(S("abcdefghij"), "abcde", false);
+    test(S("abcdefghij"), "abcdefghij", true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghijklmnopqrst"), "", false);
+    test(S("abcdefghijklmnopqrst"), "abcde", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), "", true);
+    test(S(""), "abcde", true);
+    test(S(""), "abcdefghij", true);
+    test(S(""), "abcdefghijklmnopqrst", true);
+    test(S("abcde"), "", false);
+    test(S("abcde"), "abcde", true);
+    test(S("abcde"), "abcdefghij", true);
+    test(S("abcde"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghij"), "", false);
+    test(S("abcdefghij"), "abcde", false);
+    test(S("abcdefghij"), "abcdefghij", true);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", true);
+    test(S("abcdefghijklmnopqrst"), "", false);
+    test(S("abcdefghijklmnopqrst"), "abcde", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", false);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_string.pass.cpp
new file mode 100644
index 0000000..9555697
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<class charT, class traits, class Allocator>
+//   bool operator<=(const basic_string<charT,traits,Allocator>& lhs,
+//                  const basic_string<charT,traits,Allocator>& rhs); // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, const S& rhs, bool x)
+{
+    assert((lhs <= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""), true);
+    test(S(""), S("abcde"), true);
+    test(S(""), S("abcdefghij"), true);
+    test(S(""), S("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), S(""), false);
+    test(S("abcde"), S("abcde"), true);
+    test(S("abcde"), S("abcdefghij"), true);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), S(""), false);
+    test(S("abcdefghij"), S("abcde"), false);
+    test(S("abcdefghij"), S("abcdefghij"), true);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), S(""), false);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""), true);
+    test(S(""), S("abcde"), true);
+    test(S(""), S("abcdefghij"), true);
+    test(S(""), S("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), S(""), false);
+    test(S("abcde"), S("abcde"), true);
+    test(S("abcde"), S("abcdefghij"), true);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), S(""), false);
+    test(S("abcdefghij"), S("abcde"), false);
+    test(S("abcdefghij"), S("abcdefghij"), true);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), S(""), false);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_string_view.pass.cpp
new file mode 100644
index 0000000..d746572
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_string_view.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& lhs, SV rhs, bool x)
+{
+    assert((lhs <= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), true);
+    test(S(""), SV("abcde"), true);
+    test(S(""), SV("abcdefghij"), true);
+    test(S(""), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), SV(""), false);
+    test(S("abcde"), SV("abcde"), true);
+    test(S("abcde"), SV("abcdefghij"), true);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), SV(""), false);
+    test(S("abcdefghij"), SV("abcde"), false);
+    test(S("abcdefghij"), SV("abcdefghij"), true);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), SV(""), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(S(""), SV(""), true);
+    test(S(""), SV("abcde"), true);
+    test(S(""), SV("abcdefghij"), true);
+    test(S(""), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcde"), SV(""), false);
+    test(S("abcde"), SV("abcde"), true);
+    test(S("abcde"), SV("abcdefghij"), true);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghij"), SV(""), false);
+    test(S("abcdefghij"), SV("abcde"), false);
+    test(S("abcdefghij"), SV("abcdefghij"), true);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), true);
+    test(S("abcdefghijklmnopqrst"), SV(""), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), false);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_view_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_view_string.pass.cpp
new file mode 100644
index 0000000..bf60796
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.nonmembers/string_oplt=/string_view_string.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// we get this comparison "for free" because the string implicitly converts to the string_view
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(SV lhs, const S& rhs, bool x)
+{
+    assert((lhs <= rhs) == x);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(SV(""), S(""), true);
+    test(SV(""), S("abcde"), true);
+    test(SV(""), S("abcdefghij"), true);
+    test(SV(""), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcde"), S(""), false);
+    test(SV("abcde"), S("abcde"), true);
+    test(SV("abcde"), S("abcdefghij"), true);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghij"), S(""), false);
+    test(SV("abcdefghij"), S("abcde"), false);
+    test(SV("abcdefghij"), S("abcdefghij"), true);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghijklmnopqrst"), S(""), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::basic_string_view<char, std::char_traits<char>> SV;
+    test(SV(""), S(""), true);
+    test(SV(""), S("abcde"), true);
+    test(SV(""), S("abcdefghij"), true);
+    test(SV(""), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcde"), S(""), false);
+    test(SV("abcde"), S("abcde"), true);
+    test(SV("abcde"), S("abcdefghij"), true);
+    test(SV("abcde"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghij"), S(""), false);
+    test(SV("abcdefghij"), S("abcde"), false);
+    test(SV("abcdefghij"), S("abcdefghij"), true);
+    test(SV("abcdefghij"), S("abcdefghijklmnopqrst"), true);
+    test(SV("abcdefghijklmnopqrst"), S(""), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcde"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghij"), false);
+    test(SV("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), true);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/c_str.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/c_str.pass.cpp
new file mode 100644
index 0000000..8a96f38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/c_str.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const charT* c_str() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s)
+{
+    typedef typename S::traits_type T;
+    const typename S::value_type* str = s.c_str();
+    if (s.size() > 0)
+    {
+        assert(T::compare(str, &s[0], s.size()) == 0);
+        assert(T::eq(str[s.size()], typename S::value_type()));
+    }
+    else
+        assert(T::eq(str[0], typename S::value_type()));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""));
+    test(S("abcde"));
+    test(S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""));
+    test(S("abcde"));
+    test(S("abcdefghij"));
+    test(S("abcdefghijklmnopqrst"));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/data.pass.cpp
new file mode 100644
index 0000000..11ff56a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/data.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// const charT* data() const; // constexpr since C++20
+//       charT* data();   // C++17, constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_const(const S& s)
+{
+    typedef typename S::traits_type T;
+    const typename S::value_type* str = s.data();
+    if (s.size() > 0)
+    {
+        assert(T::compare(str, &s[0], s.size()) == 0);
+        assert(T::eq(str[s.size()], typename S::value_type()));
+    }
+    else
+        assert(T::eq(str[0], typename S::value_type()));
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_nonconst(S& s)
+{
+    typedef typename S::traits_type T;
+    typename S::value_type* str = s.data();
+    if (s.size() > 0)
+    {
+        assert(T::compare(str, &s[0], s.size()) == 0);
+        assert(T::eq(str[s.size()], typename S::value_type()));
+    }
+    else
+        assert(T::eq(str[0], typename S::value_type()));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test_const(S(""));
+    test_const(S("abcde"));
+    test_const(S("abcdefghij"));
+    test_const(S("abcdefghijklmnopqrst"));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test_const(S(""));
+    test_const(S("abcde"));
+    test_const(S("abcdefghij"));
+    test_const(S("abcdefghijklmnopqrst"));
+  }
+#endif
+#if TEST_STD_VER > 14
+  {
+    typedef std::string S;
+    S s1("");                     test_nonconst(s1);
+    S s2("abcde");                test_nonconst(s2);
+    S s3("abcdefghij");           test_nonconst(s3);
+    S s4("abcdefghijklmnopqrst"); test_nonconst(s4);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/get_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/get_allocator.pass.cpp
new file mode 100644
index 0000000..6eed696
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string.accessors/get_allocator.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// allocator_type get_allocator() const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::allocator_type& a)
+{
+    assert(s.get_allocator() == a);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(""), A());
+    test(S("abcde", A(1)), A(1));
+    test(S("abcdefghij", A(2)), A(2));
+    test(S("abcdefghijklmnopqrst", A(3)), A(3));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test(S(""), A());
+    test(S("abcde", A()), A());
+    test(S("abcdefghij", A()), A());
+    test(S("abcdefghijklmnopqrst", A()), A());
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/pointer.pass.cpp
new file mode 100644
index 0000000..0863b4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/pointer.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(const charT *s) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, int x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.compare(str));
+    assert(sign(s.compare(str)) == sign(x));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), "", 0);
+    test(S(""), "abcde", -5);
+    test(S(""), "abcdefghij", -10);
+    test(S(""), "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), "", 5);
+    test(S("abcde"), "abcde", 0);
+    test(S("abcde"), "abcdefghij", -5);
+    test(S("abcde"), "abcdefghijklmnopqrst", -15);
+    test(S("abcdefghij"), "", 10);
+    test(S("abcdefghij"), "abcde", 5);
+    test(S("abcdefghij"), "abcdefghij", 0);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", -10);
+    test(S("abcdefghijklmnopqrst"), "", 20);
+    test(S("abcdefghijklmnopqrst"), "abcde", 15);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", 0);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), "", 0);
+    test(S(""), "abcde", -5);
+    test(S(""), "abcdefghij", -10);
+    test(S(""), "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), "", 5);
+    test(S("abcde"), "abcde", 0);
+    test(S("abcde"), "abcdefghij", -5);
+    test(S("abcde"), "abcdefghijklmnopqrst", -15);
+    test(S("abcdefghij"), "", 10);
+    test(S("abcdefghij"), "abcde", 5);
+    test(S("abcdefghij"), "abcdefghij", 0);
+    test(S("abcdefghij"), "abcdefghijklmnopqrst", -10);
+    test(S("abcdefghijklmnopqrst"), "", 20);
+    test(S("abcdefghijklmnopqrst"), "abcde", 15);
+    test(S("abcdefghijklmnopqrst"), "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), "abcdefghijklmnopqrst", 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_T_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_T_size_size.pass.cpp
new file mode 100644
index 0000000..9b39d33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_T_size_size.pass.cpp
@@ -0,0 +1,6112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template <typename T>
+//    int compare(size_type pos1, size_type n1, const T& t,
+//                size_type pos2, size_type n2=npos) const; // constexpr since C++20
+//
+//  Mostly we're testing string_view here
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "min_allocator.h"
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type pos1, typename S::size_type n1,
+     SV sv,      typename S::size_type pos2, typename S::size_type n2, int x)
+{
+    static_assert((!std::is_same<S, SV>::value), "");
+    if (pos1 <= s.size() && pos2 <= sv.size())
+        assert(sign(s.compare(pos1, n1, sv, pos2, n2)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, sv, pos2, n2);
+            assert(false);
+        }
+        catch (const std::out_of_range&)
+        {
+            assert(pos1 > s.size() || pos2 > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test_npos(const S& s, typename S::size_type pos1, typename S::size_type n1,
+          SV sv,      typename S::size_type pos2, int x)
+{
+    static_assert((!std::is_same<S, SV>::value), "");
+    if (pos1 <= s.size() && pos2 <= sv.size())
+        assert(sign(s.compare(pos1, n1, sv, pos2)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, sv, pos2);
+            assert(false);
+        }
+        catch (const std::out_of_range&)
+        {
+            assert(pos1 > s.size() || pos2 > sv.size());
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, SV(""), 0, 0, 0);
+    test(S(""), 0, 0, SV(""), 0, 1, 0);
+    test(S(""), 0, 0, SV(""), 1, 0, 0);
+    test(S(""), 0, 0, SV("abcde"), 0, 0, 0);
+    test(S(""), 0, 0, SV("abcde"), 0, 1, -1);
+    test(S(""), 0, 0, SV("abcde"), 0, 2, -2);
+    test(S(""), 0, 0, SV("abcde"), 0, 4, -4);
+    test(S(""), 0, 0, SV("abcde"), 0, 5, -5);
+    test(S(""), 0, 0, SV("abcde"), 0, 6, -5);
+    test(S(""), 0, 0, SV("abcde"), 1, 0, 0);
+    test(S(""), 0, 0, SV("abcde"), 1, 1, -1);
+    test(S(""), 0, 0, SV("abcde"), 1, 2, -2);
+    test(S(""), 0, 0, SV("abcde"), 1, 3, -3);
+    test(S(""), 0, 0, SV("abcde"), 1, 4, -4);
+    test(S(""), 0, 0, SV("abcde"), 1, 5, -4);
+    test(S(""), 0, 0, SV("abcde"), 2, 0, 0);
+    test(S(""), 0, 0, SV("abcde"), 2, 1, -1);
+    test(S(""), 0, 0, SV("abcde"), 2, 2, -2);
+    test(S(""), 0, 0, SV("abcde"), 2, 3, -3);
+    test(S(""), 0, 0, SV("abcde"), 2, 4, -3);
+    test(S(""), 0, 0, SV("abcde"), 4, 0, 0);
+    test(S(""), 0, 0, SV("abcde"), 4, 1, -1);
+    test(S(""), 0, 0, SV("abcde"), 4, 2, -1);
+    test(S(""), 0, 0, SV("abcde"), 5, 0, 0);
+    test(S(""), 0, 0, SV("abcde"), 5, 1, 0);
+    test(S(""), 0, 0, SV("abcde"), 6, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S(""), 0, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S(""), 0, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S(""), 0, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S(""), 0, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S(""), 0, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S(""), 0, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S(""), 0, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S(""), 0, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S(""), 0, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S(""), 0, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S(""), 0, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S(""), 0, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S(""), 0, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S(""), 0, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S(""), 0, 1, SV(""), 0, 0, 0);
+    test(S(""), 0, 1, SV(""), 0, 1, 0);
+    test(S(""), 0, 1, SV(""), 1, 0, 0);
+    test(S(""), 0, 1, SV("abcde"), 0, 0, 0);
+    test(S(""), 0, 1, SV("abcde"), 0, 1, -1);
+    test(S(""), 0, 1, SV("abcde"), 0, 2, -2);
+    test(S(""), 0, 1, SV("abcde"), 0, 4, -4);
+    test(S(""), 0, 1, SV("abcde"), 0, 5, -5);
+    test(S(""), 0, 1, SV("abcde"), 0, 6, -5);
+    test(S(""), 0, 1, SV("abcde"), 1, 0, 0);
+    test(S(""), 0, 1, SV("abcde"), 1, 1, -1);
+    test(S(""), 0, 1, SV("abcde"), 1, 2, -2);
+    test(S(""), 0, 1, SV("abcde"), 1, 3, -3);
+    test(S(""), 0, 1, SV("abcde"), 1, 4, -4);
+    test(S(""), 0, 1, SV("abcde"), 1, 5, -4);
+    test(S(""), 0, 1, SV("abcde"), 2, 0, 0);
+    test(S(""), 0, 1, SV("abcde"), 2, 1, -1);
+    test(S(""), 0, 1, SV("abcde"), 2, 2, -2);
+    test(S(""), 0, 1, SV("abcde"), 2, 3, -3);
+    test(S(""), 0, 1, SV("abcde"), 2, 4, -3);
+    test(S(""), 0, 1, SV("abcde"), 4, 0, 0);
+    test(S(""), 0, 1, SV("abcde"), 4, 1, -1);
+    test(S(""), 0, 1, SV("abcde"), 4, 2, -1);
+    test(S(""), 0, 1, SV("abcde"), 5, 0, 0);
+    test(S(""), 0, 1, SV("abcde"), 5, 1, 0);
+    test(S(""), 0, 1, SV("abcde"), 6, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S(""), 0, 1, SV("abcdefghij"), 0, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghij"), 0, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghij"), 0, 5, -5);
+    test(S(""), 0, 1, SV("abcdefghij"), 0, 9, -9);
+    test(S(""), 0, 1, SV("abcdefghij"), 0, 10, -10);
+    test(S(""), 0, 1, SV("abcdefghij"), 0, 11, -10);
+    test(S(""), 0, 1, SV("abcdefghij"), 1, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghij"), 1, 4, -4);
+    test(S(""), 0, 1, SV("abcdefghij"), 1, 8, -8);
+    test(S(""), 0, 1, SV("abcdefghij"), 1, 9, -9);
+    test(S(""), 0, 1, SV("abcdefghij"), 1, 10, -9);
+    test(S(""), 0, 1, SV("abcdefghij"), 5, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghij"), 5, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghij"), 5, 2, -2);
+    test(S(""), 0, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S(""), 0, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S(""), 0, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S(""), 0, 1, SV("abcdefghij"), 9, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghij"), 9, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghij"), 9, 2, -1);
+    test(S(""), 0, 1, SV("abcdefghij"), 10, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghij"), 10, 1, 0);
+    test(S(""), 0, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S(""), 1, 0, SV(""), 0, 0, 0);
+    test(S(""), 1, 0, SV(""), 0, 1, 0);
+    test(S(""), 1, 0, SV(""), 1, 0, 0);
+    test(S(""), 1, 0, SV("abcde"), 0, 0, 0);
+    test(S(""), 1, 0, SV("abcde"), 0, 1, 0);
+    test(S(""), 1, 0, SV("abcde"), 0, 2, 0);
+    test(S(""), 1, 0, SV("abcde"), 0, 4, 0);
+    test(S(""), 1, 0, SV("abcde"), 0, 5, 0);
+    test(S(""), 1, 0, SV("abcde"), 0, 6, 0);
+    test(S(""), 1, 0, SV("abcde"), 1, 0, 0);
+    test(S(""), 1, 0, SV("abcde"), 1, 1, 0);
+    test(S(""), 1, 0, SV("abcde"), 1, 2, 0);
+    test(S(""), 1, 0, SV("abcde"), 1, 3, 0);
+    test(S(""), 1, 0, SV("abcde"), 1, 4, 0);
+    test(S(""), 1, 0, SV("abcde"), 1, 5, 0);
+    test(S(""), 1, 0, SV("abcde"), 2, 0, 0);
+    test(S(""), 1, 0, SV("abcde"), 2, 1, 0);
+    test(S(""), 1, 0, SV("abcde"), 2, 2, 0);
+    test(S(""), 1, 0, SV("abcde"), 2, 3, 0);
+    test(S(""), 1, 0, SV("abcde"), 2, 4, 0);
+    test(S(""), 1, 0, SV("abcde"), 4, 0, 0);
+    test(S(""), 1, 0, SV("abcde"), 4, 1, 0);
+    test(S(""), 1, 0, SV("abcde"), 4, 2, 0);
+    test(S(""), 1, 0, SV("abcde"), 5, 0, 0);
+    test(S(""), 1, 0, SV("abcde"), 5, 1, 0);
+    test(S(""), 1, 0, SV("abcde"), 6, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0, 5, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0, 9, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0, 10, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0, 11, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 1, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 1, 4, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 1, 8, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 1, 9, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 1, 10, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 5, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 5, 2, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 5, 4, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 5, 5, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 5, 6, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 9, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 9, 2, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 0, SV(""), 0, 0, 0);
+    test(S("abcde"), 0, 0, SV(""), 0, 1, 0);
+    test(S("abcde"), 0, 0, SV(""), 1, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcde"), 0, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcde"), 0, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcde"), 0, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcde"), 0, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcde"), 0, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcde"), 0, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcde"), 0, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcde"), 0, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcde"), 0, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcde"), 0, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcde"), 0, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 0, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 1, SV(""), 0, 0, 1);
+    test(S("abcde"), 0, 1, SV(""), 0, 1, 1);
+    test(S("abcde"), 0, 1, SV(""), 1, 0, 0);
+    test(S("abcde"), 0, 1, SV("abcde"), 0, 0, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 0, 1, SV("abcde"), 0, 1, 0);
+    test(S("abcde"), 0, 1, SV("abcde"), 0, 2, -1);
+    test(S("abcde"), 0, 1, SV("abcde"), 0, 4, -3);
+    test(S("abcde"), 0, 1, SV("abcde"), 0, 5, -4);
+    test(S("abcde"), 0, 1, SV("abcde"), 0, 6, -4);
+    test(S("abcde"), 0, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 1, SV("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 1, SV("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 1, SV("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 1, SV("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 1, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 1, SV("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 1, SV("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 1, SV("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcde"), 0, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 0, 1, 0);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 0, 5, -4);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 0, 9, -8);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 0, 10, -9);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 0, 11, -9);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 10, -9);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 19, -18);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 20, -19);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 21, -19);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 2, SV(""), 0, 0, 2);
+    test(S("abcde"), 0, 2, SV(""), 0, 1, 2);
+    test(S("abcde"), 0, 2, SV(""), 1, 0, 0);
+    test(S("abcde"), 0, 2, SV("abcde"), 0, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcde"), 0, 1, 1);
+    test(S("abcde"), 0, 2, SV("abcde"), 0, 2, 0);
+    test(S("abcde"), 0, 2, SV("abcde"), 0, 4, -2);
+    test(S("abcde"), 0, 2, SV("abcde"), 0, 5, -3);
+    test(S("abcde"), 0, 2, SV("abcde"), 0, 6, -3);
+    test(S("abcde"), 0, 2, SV("abcde"), 1, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 2, SV("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 2, SV("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 2, SV("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 2, SV("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 2, SV("abcde"), 2, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 2, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 2, SV("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 2, SV("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 2, SV("abcde"), 4, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 2, SV("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 2, SV("abcde"), 5, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcde"), 5, 1, 2);
+    test(S("abcde"), 0, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 0, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 0, 5, -3);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 0, 9, -7);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 0, 10, -8);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 0, 11, -8);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 1, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 5, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 9, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 10, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 10, 1, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 0, 10, -8);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 0, 19, -17);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 0, 20, -18);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 0, 21, -18);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 4, SV(""), 0, 0, 4);
+    test(S("abcde"), 0, 4, SV(""), 0, 1, 4);
+    test(S("abcde"), 0, 4, SV(""), 1, 0, 0);
+    test(S("abcde"), 0, 4, SV("abcde"), 0, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcde"), 0, 1, 3);
+    test(S("abcde"), 0, 4, SV("abcde"), 0, 2, 2);
+    test(S("abcde"), 0, 4, SV("abcde"), 0, 4, 0);
+    test(S("abcde"), 0, 4, SV("abcde"), 0, 5, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 0, 6, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 1, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 4, SV("abcde"), 2, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 4, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 4, SV("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 4, SV("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 4, SV("abcde"), 4, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 4, SV("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 4, SV("abcde"), 5, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcde"), 5, 1, 4);
+    test(S("abcde"), 0, 4, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 0, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 0, 1, 3);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 0, 5, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 0, 9, -5);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 0, 10, -6);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 0, 11, -6);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 1, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 5, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 9, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 10, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 10, 1, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 0, 1, 3);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 0, 10, -6);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 0, 19, -15);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 0, 20, -16);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 0, 21, -16);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 5, SV(""), 0, 0, 5);
+    test(S("abcde"), 0, 5, SV(""), 0, 1, 5);
+    test(S("abcde"), 0, 5, SV(""), 1, 0, 0);
+    test(S("abcde"), 0, 5, SV("abcde"), 0, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 0, 1, 4);
+    test(S("abcde"), 0, 5, SV("abcde"), 0, 2, 3);
+    test(S("abcde"), 0, 5, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 0, 5, SV("abcde"), 0, 5, 0);
+    test(S("abcde"), 0, 5, SV("abcde"), 0, 6, 0);
+    test(S("abcde"), 0, 5, SV("abcde"), 1, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 5, SV("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 5, SV("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 5, SV("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 5, SV("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 5, SV("abcde"), 2, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 5, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 5, SV("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 5, SV("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 5, SV("abcde"), 4, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 5, SV("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 5, SV("abcde"), 5, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 5, 1, 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 0, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 0, 5, 0);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 0, 9, -4);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 0, 10, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 0, 11, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 1, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 5, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 9, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 10, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 10, 1, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 10, -5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 19, -14);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 20, -15);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 21, -15);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 6, SV(""), 0, 0, 5);
+    test(S("abcde"), 0, 6, SV(""), 0, 1, 5);
+    test(S("abcde"), 0, 6, SV(""), 1, 0, 0);
+    test(S("abcde"), 0, 6, SV("abcde"), 0, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 0, 1, 4);
+    test(S("abcde"), 0, 6, SV("abcde"), 0, 2, 3);
+    test(S("abcde"), 0, 6, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 0, 6, SV("abcde"), 0, 5, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcde"), 0, 6, SV("abcde"), 0, 6, 0);
+    test(S("abcde"), 0, 6, SV("abcde"), 1, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 6, SV("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 6, SV("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 6, SV("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 6, SV("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 6, SV("abcde"), 2, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 6, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 6, SV("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 6, SV("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 6, SV("abcde"), 4, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 6, SV("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 6, SV("abcde"), 5, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 5, 1, 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 0, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 0, 5, 0);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 0, 9, -4);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 0, 10, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 0, 11, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 1, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 5, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 9, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 10, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 10, 1, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 0, 10, -5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 0, 19, -14);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 0, 20, -15);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 0, 21, -15);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 0, SV(""), 0, 0, 0);
+    test(S("abcde"), 1, 0, SV(""), 0, 1, 0);
+    test(S("abcde"), 1, 0, SV(""), 1, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcde"), 1, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcde"), 1, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcde"), 1, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcde"), 1, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcde"), 1, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcde"), 1, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcde"), 1, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcde"), 1, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 1, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcde"), 1, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcde"), 1, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcde"), 1, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 1, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 1, 1, -1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 1, SV(""), 0, 0, 1);
+    test(S("abcde"), 1, 1, SV(""), 0, 1, 1);
+    test(S("abcde"), 1, 1, SV(""), 1, 0, 0);
+    test(S("abcde"), 1, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 1, 1, 0);
+    test(S("abcde"), 1, 1, SV("abcde"), 1, 2, -1);
+    test(S("abcde"), 1, 1, SV("abcde"), 1, 3, -2);
+    test(S("abcde"), 1, 1, SV("abcde"), 1, 4, -3);
+    test(S("abcde"), 1, 1, SV("abcde"), 1, 5, -3);
+    test(S("abcde"), 1, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 1, SV("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 1, SV("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 1, SV("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 1, SV("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1, 1, 0);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1, 4, -3);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1, 8, -7);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1, 9, -8);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1, 10, -8);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 9, -8);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 18, -17);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 19, -18);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 20, -18);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 2, SV(""), 0, 0, 2);
+    test(S("abcde"), 1, 2, SV(""), 0, 1, 2);
+    test(S("abcde"), 1, 2, SV(""), 1, 0, 0);
+    test(S("abcde"), 1, 2, SV("abcde"), 0, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 2, SV("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 2, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 2, SV("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 2, SV("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 2, SV("abcde"), 1, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 1, 1, 1);
+    test(S("abcde"), 1, 2, SV("abcde"), 1, 2, 0);
+    test(S("abcde"), 1, 2, SV("abcde"), 1, 3, -1);
+    test(S("abcde"), 1, 2, SV("abcde"), 1, 4, -2);
+    test(S("abcde"), 1, 2, SV("abcde"), 1, 5, -2);
+    test(S("abcde"), 1, 2, SV("abcde"), 2, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 2, SV("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 2, SV("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 2, SV("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 2, SV("abcde"), 4, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 2, SV("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 2, SV("abcde"), 5, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 5, 1, 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 0, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1, 4, -2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1, 8, -6);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1, 9, -7);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1, 10, -7);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 5, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 9, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 10, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 10, 1, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1, 9, -7);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1, 18, -16);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1, 19, -17);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1, 20, -17);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 3, SV(""), 0, 0, 3);
+    test(S("abcde"), 1, 3, SV(""), 0, 1, 3);
+    test(S("abcde"), 1, 3, SV(""), 1, 0, 0);
+    test(S("abcde"), 1, 3, SV("abcde"), 0, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 3, SV("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 3, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 3, SV("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 3, SV("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 3, SV("abcde"), 1, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 1, 1, 2);
+    test(S("abcde"), 1, 3, SV("abcde"), 1, 2, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcde"), 1, 3, SV("abcde"), 1, 3, 0);
+    test(S("abcde"), 1, 3, SV("abcde"), 1, 4, -1);
+    test(S("abcde"), 1, 3, SV("abcde"), 1, 5, -1);
+    test(S("abcde"), 1, 3, SV("abcde"), 2, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 3, SV("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 3, SV("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 3, SV("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 3, SV("abcde"), 4, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 3, SV("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 3, SV("abcde"), 5, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 5, 1, 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 0, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1, 1, 2);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1, 8, -5);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1, 9, -6);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1, 10, -6);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 5, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 9, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 10, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 10, 1, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 0, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1, 1, 2);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1, 9, -6);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1, 18, -15);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1, 19, -16);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1, 20, -16);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 10, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 19, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 20, 0, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 20, 1, 3);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 4, SV(""), 0, 0, 4);
+    test(S("abcde"), 1, 4, SV(""), 0, 1, 4);
+    test(S("abcde"), 1, 4, SV(""), 1, 0, 0);
+    test(S("abcde"), 1, 4, SV("abcde"), 0, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 4, SV("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 4, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 4, SV("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 4, SV("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 4, SV("abcde"), 1, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 1, 1, 3);
+    test(S("abcde"), 1, 4, SV("abcde"), 1, 2, 2);
+    test(S("abcde"), 1, 4, SV("abcde"), 1, 3, 1);
+    test(S("abcde"), 1, 4, SV("abcde"), 1, 4, 0);
+    test(S("abcde"), 1, 4, SV("abcde"), 1, 5, 0);
+    test(S("abcde"), 1, 4, SV("abcde"), 2, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 4, SV("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 4, SV("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 4, SV("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 4, SV("abcde"), 4, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 4, SV("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 4, SV("abcde"), 5, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 5, 1, 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 0, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1, 4, 0);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1, 8, -4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1, 9, -5);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1, 10, -5);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 5, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 9, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 10, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 10, 1, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 9, -5);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 18, -14);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 19, -15);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 20, -15);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 5, SV(""), 0, 0, 4);
+    test(S("abcde"), 1, 5, SV(""), 0, 1, 4);
+    test(S("abcde"), 1, 5, SV(""), 1, 0, 0);
+    test(S("abcde"), 1, 5, SV("abcde"), 0, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 5, SV("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 5, SV("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 5, SV("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 5, SV("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 5, SV("abcde"), 1, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 1, 1, 3);
+    test(S("abcde"), 1, 5, SV("abcde"), 1, 2, 2);
+    test(S("abcde"), 1, 5, SV("abcde"), 1, 3, 1);
+    test(S("abcde"), 1, 5, SV("abcde"), 1, 4, 0);
+    test(S("abcde"), 1, 5, SV("abcde"), 1, 5, 0);
+    test(S("abcde"), 1, 5, SV("abcde"), 2, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 5, SV("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 5, SV("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 5, SV("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 5, SV("abcde"), 4, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 5, SV("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 5, SV("abcde"), 5, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 5, 1, 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 0, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1, 4, 0);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1, 8, -4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1, 9, -5);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1, 10, -5);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 5, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 9, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 10, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 10, 1, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1, 9, -5);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1, 18, -14);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1, 19, -15);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1, 20, -15);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 0, SV(""), 0, 0, 0);
+    test(S("abcde"), 2, 0, SV(""), 0, 1, 0);
+    test(S("abcde"), 2, 0, SV(""), 1, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcde"), 2, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcde"), 2, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcde"), 2, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcde"), 2, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcde"), 2, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcde"), 2, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcde"), 2, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcde"), 2, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 2, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcde"), 2, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcde"), 2, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcde"), 2, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 2, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 1, SV(""), 0, 0, 1);
+    test(S("abcde"), 2, 1, SV(""), 0, 1, 1);
+    test(S("abcde"), 2, 1, SV(""), 1, 0, 0);
+    test(S("abcde"), 2, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 1, SV("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 1, SV("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 1, SV("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 1, SV("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 2, 0, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test12()
+{
+    test(S("abcde"), 2, 1, SV("abcde"), 2, 1, 0);
+    test(S("abcde"), 2, 1, SV("abcde"), 2, 2, -1);
+    test(S("abcde"), 2, 1, SV("abcde"), 2, 3, -2);
+    test(S("abcde"), 2, 1, SV("abcde"), 2, 4, -2);
+    test(S("abcde"), 2, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 1, SV("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 5, 4, -3);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 10, 11, -8);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 2, SV(""), 0, 0, 2);
+    test(S("abcde"), 2, 2, SV(""), 0, 1, 2);
+    test(S("abcde"), 2, 2, SV(""), 1, 0, 0);
+    test(S("abcde"), 2, 2, SV("abcde"), 0, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 1, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 2, SV("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 2, SV("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 2, SV("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 2, SV("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 2, SV("abcde"), 2, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 2, 1, 1);
+    test(S("abcde"), 2, 2, SV("abcde"), 2, 2, 0);
+    test(S("abcde"), 2, 2, SV("abcde"), 2, 3, -1);
+    test(S("abcde"), 2, 2, SV("abcde"), 2, 4, -1);
+    test(S("abcde"), 2, 2, SV("abcde"), 4, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 2, SV("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 2, SV("abcde"), 5, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 5, 1, 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 0, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 1, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 5, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 5, 4, -3);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test13()
+{
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 9, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 10, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 10, 1, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 10, 11, -8);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 3, SV(""), 0, 0, 3);
+    test(S("abcde"), 2, 3, SV(""), 0, 1, 3);
+    test(S("abcde"), 2, 3, SV(""), 1, 0, 0);
+    test(S("abcde"), 2, 3, SV("abcde"), 0, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 3, SV("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 3, SV("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 3, SV("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 3, SV("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 3, SV("abcde"), 1, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 3, SV("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 3, SV("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 3, SV("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 3, SV("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 3, SV("abcde"), 2, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 2, 1, 2);
+    test(S("abcde"), 2, 3, SV("abcde"), 2, 2, 1);
+    test(S("abcde"), 2, 3, SV("abcde"), 2, 3, 0);
+    test(S("abcde"), 2, 3, SV("abcde"), 2, 4, 0);
+    test(S("abcde"), 2, 3, SV("abcde"), 4, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 3, SV("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 3, SV("abcde"), 5, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 5, 1, 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 0, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 1, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 5, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 5, 4, -3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 9, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 10, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 10, 1, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 0, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 1, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 10, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 10, 11, -8);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test14()
+{
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 19, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 20, 0, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 20, 1, 3);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 4, SV(""), 0, 0, 3);
+    test(S("abcde"), 2, 4, SV(""), 0, 1, 3);
+    test(S("abcde"), 2, 4, SV(""), 1, 0, 0);
+    test(S("abcde"), 2, 4, SV("abcde"), 0, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 4, SV("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 4, SV("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 4, SV("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 4, SV("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 4, SV("abcde"), 1, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 4, SV("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 4, SV("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 4, SV("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 4, SV("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 4, SV("abcde"), 2, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 2, 1, 2);
+    test(S("abcde"), 2, 4, SV("abcde"), 2, 2, 1);
+    test(S("abcde"), 2, 4, SV("abcde"), 2, 3, 0);
+    test(S("abcde"), 2, 4, SV("abcde"), 2, 4, 0);
+    test(S("abcde"), 2, 4, SV("abcde"), 4, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 4, SV("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 4, SV("abcde"), 5, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 5, 1, 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 0, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 1, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 5, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 5, 4, -3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 9, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 10, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 10, 1, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 0, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 1, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 10, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 10, 11, -8);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 19, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 20, 0, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 20, 1, 3);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 4, 0, SV(""), 0, 0, 0);
+    test(S("abcde"), 4, 0, SV(""), 0, 1, 0);
+    test(S("abcde"), 4, 0, SV(""), 1, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcde"), 4, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcde"), 4, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcde"), 4, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcde"), 4, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcde"), 4, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcde"), 4, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcde"), 4, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcde"), 4, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 4, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcde"), 4, 0, SV("abcde"), 2, 4, -3);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test15()
+{
+    test(S("abcde"), 4, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcde"), 4, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 4, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 4, 1, SV(""), 0, 0, 1);
+    test(S("abcde"), 4, 1, SV(""), 0, 1, 1);
+    test(S("abcde"), 4, 1, SV(""), 1, 0, 0);
+    test(S("abcde"), 4, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 0, 1, 4);
+    test(S("abcde"), 4, 1, SV("abcde"), 0, 2, 4);
+    test(S("abcde"), 4, 1, SV("abcde"), 0, 4, 4);
+    test(S("abcde"), 4, 1, SV("abcde"), 0, 5, 4);
+    test(S("abcde"), 4, 1, SV("abcde"), 0, 6, 4);
+    test(S("abcde"), 4, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 1, 1, 3);
+    test(S("abcde"), 4, 1, SV("abcde"), 1, 2, 3);
+    test(S("abcde"), 4, 1, SV("abcde"), 1, 3, 3);
+    test(S("abcde"), 4, 1, SV("abcde"), 1, 4, 3);
+    test(S("abcde"), 4, 1, SV("abcde"), 1, 5, 3);
+    test(S("abcde"), 4, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 2, 1, 2);
+    test(S("abcde"), 4, 1, SV("abcde"), 2, 2, 2);
+    test(S("abcde"), 4, 1, SV("abcde"), 2, 3, 2);
+    test(S("abcde"), 4, 1, SV("abcde"), 2, 4, 2);
+    test(S("abcde"), 4, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 4, 1, 0);
+    test(S("abcde"), 4, 1, SV("abcde"), 4, 2, 0);
+    test(S("abcde"), 4, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 0, 5, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 0, 9, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 0, 10, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 0, 11, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 1, 4, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 1, 8, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 1, 9, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 1, 10, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 5, 2, -1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 5, 4, -1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 5, 5, -1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 5, 6, -1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 9, 1, -5);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test16()
+{
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 9, 2, -5);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 0, 10, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 0, 19, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 0, 20, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 0, 21, 4);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 1, 9, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 1, 18, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 1, 19, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 1, 20, 3);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 10, 1, -6);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 10, 5, -6);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 10, 9, -6);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 10, 10, -6);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 10, 11, -6);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 19, 1, -15);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 19, 2, -15);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 4, 2, SV(""), 0, 0, 1);
+    test(S("abcde"), 4, 2, SV(""), 0, 1, 1);
+    test(S("abcde"), 4, 2, SV(""), 1, 0, 0);
+    test(S("abcde"), 4, 2, SV("abcde"), 0, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 0, 1, 4);
+    test(S("abcde"), 4, 2, SV("abcde"), 0, 2, 4);
+    test(S("abcde"), 4, 2, SV("abcde"), 0, 4, 4);
+    test(S("abcde"), 4, 2, SV("abcde"), 0, 5, 4);
+    test(S("abcde"), 4, 2, SV("abcde"), 0, 6, 4);
+    test(S("abcde"), 4, 2, SV("abcde"), 1, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 1, 1, 3);
+    test(S("abcde"), 4, 2, SV("abcde"), 1, 2, 3);
+    test(S("abcde"), 4, 2, SV("abcde"), 1, 3, 3);
+    test(S("abcde"), 4, 2, SV("abcde"), 1, 4, 3);
+    test(S("abcde"), 4, 2, SV("abcde"), 1, 5, 3);
+    test(S("abcde"), 4, 2, SV("abcde"), 2, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 2, 1, 2);
+    test(S("abcde"), 4, 2, SV("abcde"), 2, 2, 2);
+    test(S("abcde"), 4, 2, SV("abcde"), 2, 3, 2);
+    test(S("abcde"), 4, 2, SV("abcde"), 2, 4, 2);
+    test(S("abcde"), 4, 2, SV("abcde"), 4, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 4, 1, 0);
+    test(S("abcde"), 4, 2, SV("abcde"), 4, 2, 0);
+    test(S("abcde"), 4, 2, SV("abcde"), 5, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 5, 1, 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 0, 5, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 0, 9, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 0, 10, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 0, 11, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 1, 4, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 1, 8, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 1, 9, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 1, 10, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 5, 2, -1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 5, 4, -1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 5, 5, -1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 5, 6, -1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 9, 1, -5);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 9, 2, -5);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 0, 10, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 0, 19, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 0, 20, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 0, 21, 4);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 1, 9, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 1, 18, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 1, 19, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 1, 20, 3);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 10, 1, -6);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 10, 5, -6);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 10, 9, -6);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 10, 10, -6);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 10, 11, -6);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 19, 1, -15);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 19, 2, -15);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test17()
+{
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 5, 0, SV(""), 0, 0, 0);
+    test(S("abcde"), 5, 0, SV(""), 0, 1, 0);
+    test(S("abcde"), 5, 0, SV(""), 1, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcde"), 5, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcde"), 5, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcde"), 5, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcde"), 5, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcde"), 5, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcde"), 5, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcde"), 5, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcde"), 5, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 5, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcde"), 5, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcde"), 5, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcde"), 5, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 5, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 5, 1, SV(""), 0, 0, 0);
+    test(S("abcde"), 5, 1, SV(""), 0, 1, 0);
+    test(S("abcde"), 5, 1, SV(""), 1, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcde"), 0, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcde"), 0, 2, -2);
+    test(S("abcde"), 5, 1, SV("abcde"), 0, 4, -4);
+    test(S("abcde"), 5, 1, SV("abcde"), 0, 5, -5);
+    test(S("abcde"), 5, 1, SV("abcde"), 0, 6, -5);
+    test(S("abcde"), 5, 1, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcde"), 1, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcde"), 1, 2, -2);
+    test(S("abcde"), 5, 1, SV("abcde"), 1, 3, -3);
+    test(S("abcde"), 5, 1, SV("abcde"), 1, 4, -4);
+    test(S("abcde"), 5, 1, SV("abcde"), 1, 5, -4);
+    test(S("abcde"), 5, 1, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcde"), 2, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcde"), 2, 2, -2);
+    test(S("abcde"), 5, 1, SV("abcde"), 2, 3, -3);
+    test(S("abcde"), 5, 1, SV("abcde"), 2, 4, -3);
+    test(S("abcde"), 5, 1, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcde"), 4, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcde"), 4, 2, -1);
+    test(S("abcde"), 5, 1, SV("abcde"), 5, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test18()
+{
+    test(S("abcde"), 5, 1, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 5, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 6, 0, SV(""), 0, 0, 0);
+    test(S("abcde"), 6, 0, SV(""), 0, 1, 0);
+    test(S("abcde"), 6, 0, SV(""), 1, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0, 4, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0, 5, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0, 6, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 1, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 1, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 1, 3, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 1, 4, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 1, 5, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 2, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 2, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 2, 3, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 2, 4, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 4, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 4, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0, 5, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0, 9, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0, 10, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0, 11, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 1, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 1, 4, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 1, 8, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 1, 9, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 1, 10, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 5, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 5, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 5, 4, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 5, 5, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 5, 6, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 9, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 9, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 11, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test19()
+{
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 0, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV(""), 0, 1, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test20()
+{
+    test(S("abcdefghij"), 0, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 0, 1, 0);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 0, 2, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 0, 4, -3);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 0, 5, -4);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 0, 6, -4);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 0, 5, -4);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 0, 9, -8);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 0, 10, -9);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 0, 11, -9);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 10, -9);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 19, -18);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 20, -19);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 21, -19);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 5, SV(""), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV(""), 0, 1, 5);
+    test(S("abcdefghij"), 0, 5, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0, 1, 4);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0, 2, 3);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0, 5, 0);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0, 6, 0);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 1, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 2, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 4, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 5, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 5, 1, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 0, 1, 4);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test21()
+{
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 0, 5, 0);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 0, 9, -4);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 0, 10, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 0, 11, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 10, -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 19, -14);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 20, -15);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 0, 21, -15);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 9, SV(""), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV(""), 0, 1, 9);
+    test(S("abcdefghij"), 0, 9, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 0, 1, 8);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 0, 2, 7);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 0, 5, 4);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 0, 6, 4);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 1, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 2, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 4, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 5, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 5, 1, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 0, 1, 8);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 0, 5, 4);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 0, 9, 0);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 0, 10, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 0, 11, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 0, 1, 8);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 0, 10, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 0, 19, -10);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test22()
+{
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 0, 20, -11);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 0, 21, -11);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 10, SV(""), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV(""), 0, 1, 10);
+    test(S("abcdefghij"), 0, 10, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 0, 2, 8);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 0, 4, 6);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 2, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 4, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 5, 1, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 19, -9);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 20, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 21, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 11, SV(""), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV(""), 0, 1, 10);
+    test(S("abcdefghij"), 0, 11, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 0, 2, 8);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test23()
+{
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 0, 4, 6);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 2, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 4, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 5, 1, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 0, 19, -9);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 0, 20, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 0, 21, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 1, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 0, 11, -10);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test24()
+{
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1, 1, 0);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1, 3, -2);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1, 4, -3);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1, 5, -3);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1, 4, -3);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1, 8, -7);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1, 9, -8);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1, 10, -8);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test25()
+{
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 9, -8);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 18, -17);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 19, -18);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 20, -18);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 4, SV(""), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV(""), 0, 1, 4);
+    test(S("abcdefghij"), 1, 4, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1, 1, 3);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1, 2, 2);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1, 3, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1, 4, 0);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1, 5, 0);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 2, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 4, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 5, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 5, 1, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1, 1, 3);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1, 4, 0);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1, 8, -4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1, 9, -5);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1, 10, -5);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 5, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 9, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 10, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 10, 1, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 9, -5);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 18, -14);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 19, -15);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1, 20, -15);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 8, SV(""), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV(""), 0, 1, 8);
+    test(S("abcdefghij"), 1, 8, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1, 0, 8);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test26()
+{
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1, 1, 7);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1, 2, 6);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1, 3, 5);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 2, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 4, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 5, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 5, 1, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1, 1, 7);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1, 8, 0);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 5, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 9, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 10, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 10, 1, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1, 1, 7);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1, 18, -10);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1, 19, -11);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1, 20, -11);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 10, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 19, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 20, 0, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 20, 1, 8);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 9, SV(""), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV(""), 0, 1, 9);
+    test(S("abcdefghij"), 1, 9, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1, 2, 7);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1, 3, 6);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1, 5, 5);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 2, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 4, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 5, 1, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1, 8, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test27()
+{
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 18, -9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 19, -10);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 20, -10);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 10, SV(""), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV(""), 0, 1, 9);
+    test(S("abcdefghij"), 1, 10, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1, 2, 7);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1, 3, 6);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1, 5, 5);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 2, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 4, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 5, 1, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1, 8, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1, 18, -9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1, 19, -10);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1, 20, -10);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test28()
+{
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 5, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghij"), 5, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 1, 4, 4);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test29()
+{
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5, 1, 0);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5, 2, -1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5, 4, -3);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 2, SV(""), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV(""), 0, 1, 2);
+    test(S("abcdefghij"), 5, 2, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 1, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 2, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 4, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 5, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 5, 1, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 1, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5, 1, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test30()
+{
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5, 2, 0);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5, 4, -2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5, 5, -3);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5, 6, -3);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 9, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 10, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 10, 1, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 4, SV(""), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV(""), 0, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 1, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 2, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 4, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 5, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 5, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 1, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5, 1, 3);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5, 2, 2);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5, 4, 0);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5, 5, -1);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5, 6, -1);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 9, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 10, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 10, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 10, 9, -5);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test31()
+{
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 5, SV(""), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV(""), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 2, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 4, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 5, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5, 2, 3);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5, 4, 1);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 6, SV(""), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV(""), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 2, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 2, 2, 3);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test32()
+{
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 4, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 5, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5, 2, 3);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5, 4, 1);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 9, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 5, 6, -5);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test33()
+{
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 9, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghij"), 9, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 0, 2, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 0, 4, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 0, 6, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 1, 2, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 1, 3, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 1, 5, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 2, 1, 7);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 2, 2, 7);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 2, 3, 7);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 2, 4, 7);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 4, 1, 5);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 4, 2, 5);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 0, 9, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 0, 11, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 1, 8, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 1, 10, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 5, 2, 4);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 5, 4, 4);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 5, 5, 4);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 5, 6, 4);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 0, 19, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 0, 20, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 0, 21, 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 1, 18, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 1, 19, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 1, 20, 8);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 10, 5, -1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 10, 9, -1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 10, 10, -1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 10, 11, -1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 19, 1, -10);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test34()
+{
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 19, 2, -10);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 9, 2, SV(""), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV(""), 0, 1, 1);
+    test(S("abcdefghij"), 9, 2, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 0, 2, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 0, 4, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 0, 6, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 1, 2, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 1, 3, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 1, 5, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 2, 1, 7);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 2, 2, 7);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 2, 3, 7);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 2, 4, 7);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 4, 1, 5);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 4, 2, 5);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 0, 9, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 0, 11, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 1, 8, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 1, 10, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 5, 2, 4);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 5, 4, 4);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 5, 5, 4);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 5, 6, 4);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 0, 19, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 0, 20, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 0, 21, 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 1, 18, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 1, 19, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 1, 20, 8);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 10, 5, -1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 10, 9, -1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 10, 10, -1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 10, 11, -1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 19, 1, -10);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 19, 2, -10);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 10, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 4, 1, -1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test35()
+{
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 10, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 10, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test36()
+{
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0, 4, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0, 5, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0, 6, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 1, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 1, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 1, 3, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 1, 4, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 1, 5, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 2, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 2, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 2, 3, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 2, 4, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 4, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 4, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0, 5, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0, 9, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 1, 4, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 1, 8, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 5, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 5, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 5, 4, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test37()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 0, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 0, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 0, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 0, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), 6, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test38()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 0, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 0, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 0, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 0, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 19, -18);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 0, 21, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 0, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 0, 4, 6);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 0, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 0, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 2, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 4, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 5, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 1, 9);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test39()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 19, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 20, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 0, 21, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 0, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 0, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 0, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 0, 6, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 2, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 4, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 5, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 0, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 0, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 0, 11, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 9, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 10, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 0, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 0, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 0, 21, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 19, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 20, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 20, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 0, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 0, 0, 20);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test40()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 0, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 0, 4, 16);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 0, 6, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 2, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 4, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 5, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 0, 9, 11);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 9, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 10, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 19, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 20, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 20, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 0, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 0, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 0, 4, 16);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 0, 6, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 2, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 4, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 5, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 0, 9, 11);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test41()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 9, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 10, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 19, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 20, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 20, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test42()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1, 5, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1, 8, -7);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1, 10, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 18, -17);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 19, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1, 20, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 0, 5, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test43()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1, 2, 7);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1, 3, 6);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 2, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 4, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 5, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1, 8, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 18, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 19, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1, 20, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1, 2, 16);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1, 3, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 2, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 4, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 5, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 5, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1, 1, 17);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test44()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1, 8, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 5, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 9, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 10, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 10, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 10, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 19, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 20, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 20, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1, 3, 16);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 2, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 4, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 5, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1, 8, 11);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 9, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 10, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1, 18, 1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test45()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 19, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 20, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 20, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1, 3, 16);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 2, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 4, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 5, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1, 8, 11);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 9, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 10, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 19, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 20, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 20, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 1, 2, -2);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test46()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 1, 10, 9);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test47()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 0, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 1, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 2, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 4, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 5, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10, 1, 4);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test48()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10, 9, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 2, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 4, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 5, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10, 5, 4);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10, 11, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 2, 0, 10);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test49()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 4, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 5, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 2, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 4, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 5, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 5, 4, 5);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test50()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test51()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 0, 2, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 0, 4, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 0, 6, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 1, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 1, 3, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 1, 5, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 2, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 2, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 2, 3, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 2, 4, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 4, 1, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 4, 2, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 0, 9, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 0, 11, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 1, 8, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 1, 10, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 5, 1, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 5, 2, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 5, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 5, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 5, 6, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 9, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 9, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 0, 19, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 0, 20, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 0, 21, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 1, 18, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 1, 19, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 1, 20, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 10, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 10, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 10, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 10, 11, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 0, 2, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 0, 4, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 0, 6, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 1, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 1, 3, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 1, 5, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 2, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 2, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 2, 3, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 2, 4, 17);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test52()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 4, 1, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 4, 2, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 0, 9, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 0, 11, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 1, 8, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 1, 10, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 5, 1, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 5, 2, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 5, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 5, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 5, 6, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 9, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 9, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 0, 19, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 0, 20, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 0, 21, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 1, 18, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 1, 19, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 1, 20, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 10, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 10, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 10, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 10, 11, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 9, 1, -1);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test53()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test54()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0, 6, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 1, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 1, 3, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 1, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 1, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 2, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 2, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 2, 3, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 2, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 4, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 4, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 1, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 1, 8, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 5, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 5, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 21, 0, 0);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test55()
+{
+    test_npos(S(""), 0, 0, SV(""), 0, 0);
+    test_npos(S(""), 0, 0, SV("abcde"), 0, -5);
+    test_npos(S("abcde"), 0, 0, SV("abcdefghij"), 0, -10);
+    test_npos(S("abcde"), 0, 0, SV("abcdefghij"), 1, -9);
+    test_npos(S("abcde"), 0, 0, SV("abcdefghij"), 5, -5);
+
+    return true;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 bool test56() {
+  S s = "MNOP";
+  SV sv = "CDEF";
+  char arr[] = "MNOP";
+
+//  calls compare(pos, n1, const char *, 0)
+  assert(s.compare(0, 4, "QRST", 0) > 0);
+
+//  calls compare(pos, n1, string("QRST"), 0, npos)
+  assert(s.compare(0, 4, "QRST", 0, std::string::npos) < 0);
+
+//  calls compare(pos, n1, T, 0, npos)
+  assert(s.compare(0, 4, sv, 0) > 0);
+
+//  calls compare(pos, n1, T, 0, npos)
+  assert(s.compare(0, 4, sv, 0, std::string::npos) > 0);
+
+// calls compare(pos, n1, const char *, 0)
+  assert(s.compare(0, 4, arr, 0) > 0);
+
+//  calls compare(size, size, string(arr), 0, npos)
+  assert(s.compare(0, 4, arr, 0, std::string::npos) == 0);
+
+  return true;
+}
+
+template <class S, class SV>
+void test() {
+  test0<S, SV>();
+  test1<S, SV>();
+  test2<S, SV>();
+  test3<S, SV>();
+  test4<S, SV>();
+  test5<S, SV>();
+  test6<S, SV>();
+  test7<S, SV>();
+  test8<S, SV>();
+  test9<S, SV>();
+  test10<S, SV>();
+  test11<S, SV>();
+  test12<S, SV>();
+  test13<S, SV>();
+  test14<S, SV>();
+  test15<S, SV>();
+  test16<S, SV>();
+  test17<S, SV>();
+  test18<S, SV>();
+  test19<S, SV>();
+  test20<S, SV>();
+  test21<S, SV>();
+  test22<S, SV>();
+  test23<S, SV>();
+  test24<S, SV>();
+  test25<S, SV>();
+  test26<S, SV>();
+  test27<S, SV>();
+  test28<S, SV>();
+  test29<S, SV>();
+  test30<S, SV>();
+  test31<S, SV>();
+  test32<S, SV>();
+  test33<S, SV>();
+  test34<S, SV>();
+  test35<S, SV>();
+  test36<S, SV>();
+  test37<S, SV>();
+  test38<S, SV>();
+  test39<S, SV>();
+  test40<S, SV>();
+  test41<S, SV>();
+  test42<S, SV>();
+  test43<S, SV>();
+  test44<S, SV>();
+  test45<S, SV>();
+  test46<S, SV>();
+  test47<S, SV>();
+  test48<S, SV>();
+  test49<S, SV>();
+  test50<S, SV>();
+  test51<S, SV>();
+  test52<S, SV>();
+  test53<S, SV>();
+  test54<S, SV>();
+  test55<S, SV>();
+  test56<S, SV>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S, SV>());
+  static_assert(test1<S, SV>());
+  static_assert(test2<S, SV>());
+  static_assert(test3<S, SV>());
+  static_assert(test4<S, SV>());
+  static_assert(test5<S, SV>());
+  static_assert(test6<S, SV>());
+  static_assert(test7<S, SV>());
+  static_assert(test8<S, SV>());
+  static_assert(test9<S, SV>());
+  static_assert(test10<S, SV>());
+  static_assert(test11<S, SV>());
+  static_assert(test12<S, SV>());
+  static_assert(test13<S, SV>());
+  static_assert(test14<S, SV>());
+  static_assert(test15<S, SV>());
+  static_assert(test16<S, SV>());
+  static_assert(test17<S, SV>());
+  static_assert(test18<S, SV>());
+  static_assert(test19<S, SV>());
+  static_assert(test20<S, SV>());
+  static_assert(test21<S, SV>());
+  static_assert(test22<S, SV>());
+  static_assert(test23<S, SV>());
+  static_assert(test24<S, SV>());
+  static_assert(test25<S, SV>());
+  static_assert(test26<S, SV>());
+  static_assert(test27<S, SV>());
+  static_assert(test28<S, SV>());
+  static_assert(test29<S, SV>());
+  static_assert(test30<S, SV>());
+  static_assert(test31<S, SV>());
+  static_assert(test32<S, SV>());
+  static_assert(test33<S, SV>());
+  static_assert(test34<S, SV>());
+  static_assert(test35<S, SV>());
+  static_assert(test36<S, SV>());
+  static_assert(test37<S, SV>());
+  static_assert(test38<S, SV>());
+  static_assert(test39<S, SV>());
+  static_assert(test40<S, SV>());
+  static_assert(test41<S, SV>());
+  static_assert(test42<S, SV>());
+  static_assert(test43<S, SV>());
+  static_assert(test44<S, SV>());
+  static_assert(test45<S, SV>());
+  static_assert(test46<S, SV>());
+  static_assert(test47<S, SV>());
+  static_assert(test48<S, SV>());
+  static_assert(test49<S, SV>());
+  static_assert(test50<S, SV>());
+  static_assert(test51<S, SV>());
+  static_assert(test52<S, SV>());
+  static_assert(test53<S, SV>());
+  static_assert(test54<S, SV>());
+  static_assert(test55<S, SV>());
+  static_assert(test56<S, SV>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string, std::string_view>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>,
+       std::basic_string_view<char, std::char_traits<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_pointer.pass.cpp
new file mode 100644
index 0000000..0e0856b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_pointer.pass.cpp
@@ -0,0 +1,391 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(size_type pos, size_type n1, const charT *s) const; // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "min_allocator.h"
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type pos1, typename S::size_type n1,
+     const typename S::value_type* str, int x)
+{
+    if (pos1 <= s.size())
+        assert(sign(s.compare(pos1, n1, str)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > s.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), 0, 0, "", 0);
+    test(S(""), 0, 0, "abcde", -5);
+    test(S(""), 0, 0, "abcdefghij", -10);
+    test(S(""), 0, 0, "abcdefghijklmnopqrst", -20);
+    test(S(""), 0, 1, "", 0);
+    test(S(""), 0, 1, "abcde", -5);
+    test(S(""), 0, 1, "abcdefghij", -10);
+    test(S(""), 0, 1, "abcdefghijklmnopqrst", -20);
+    test(S(""), 1, 0, "", 0);
+    test(S(""), 1, 0, "abcde", 0);
+    test(S(""), 1, 0, "abcdefghij", 0);
+    test(S(""), 1, 0, "abcdefghijklmnopqrst", 0);
+    test(S("abcde"), 0, 0, "", 0);
+    test(S("abcde"), 0, 0, "abcde", -5);
+    test(S("abcde"), 0, 0, "abcdefghij", -10);
+    test(S("abcde"), 0, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), 0, 1, "", 1);
+    test(S("abcde"), 0, 1, "abcde", -4);
+    test(S("abcde"), 0, 1, "abcdefghij", -9);
+    test(S("abcde"), 0, 1, "abcdefghijklmnopqrst", -19);
+    test(S("abcde"), 0, 2, "", 2);
+    test(S("abcde"), 0, 2, "abcde", -3);
+    test(S("abcde"), 0, 2, "abcdefghij", -8);
+    test(S("abcde"), 0, 2, "abcdefghijklmnopqrst", -18);
+    test(S("abcde"), 0, 4, "", 4);
+    test(S("abcde"), 0, 4, "abcde", -1);
+    test(S("abcde"), 0, 4, "abcdefghij", -6);
+    test(S("abcde"), 0, 4, "abcdefghijklmnopqrst", -16);
+    test(S("abcde"), 0, 5, "", 5);
+    test(S("abcde"), 0, 5, "abcde", 0);
+    test(S("abcde"), 0, 5, "abcdefghij", -5);
+    test(S("abcde"), 0, 5, "abcdefghijklmnopqrst", -15);
+    test(S("abcde"), 0, 6, "", 5);
+    test(S("abcde"), 0, 6, "abcde", 0);
+    test(S("abcde"), 0, 6, "abcdefghij", -5);
+    test(S("abcde"), 0, 6, "abcdefghijklmnopqrst", -15);
+    test(S("abcde"), 1, 0, "", 0);
+    test(S("abcde"), 1, 0, "abcde", -5);
+    test(S("abcde"), 1, 0, "abcdefghij", -10);
+    test(S("abcde"), 1, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), 1, 1, "", 1);
+    test(S("abcde"), 1, 1, "abcde", 1);
+    test(S("abcde"), 1, 1, "abcdefghij", 1);
+    test(S("abcde"), 1, 1, "abcdefghijklmnopqrst", 1);
+    test(S("abcde"), 1, 2, "", 2);
+    test(S("abcde"), 1, 2, "abcde", 1);
+    test(S("abcde"), 1, 2, "abcdefghij", 1);
+    test(S("abcde"), 1, 2, "abcdefghijklmnopqrst", 1);
+    test(S("abcde"), 1, 3, "", 3);
+    test(S("abcde"), 1, 3, "abcde", 1);
+    test(S("abcde"), 1, 3, "abcdefghij", 1);
+    test(S("abcde"), 1, 3, "abcdefghijklmnopqrst", 1);
+    test(S("abcde"), 1, 4, "", 4);
+    test(S("abcde"), 1, 4, "abcde", 1);
+    test(S("abcde"), 1, 4, "abcdefghij", 1);
+    test(S("abcde"), 1, 4, "abcdefghijklmnopqrst", 1);
+    test(S("abcde"), 1, 5, "", 4);
+    test(S("abcde"), 1, 5, "abcde", 1);
+    test(S("abcde"), 1, 5, "abcdefghij", 1);
+    test(S("abcde"), 1, 5, "abcdefghijklmnopqrst", 1);
+    test(S("abcde"), 2, 0, "", 0);
+    test(S("abcde"), 2, 0, "abcde", -5);
+    test(S("abcde"), 2, 0, "abcdefghij", -10);
+    test(S("abcde"), 2, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), 2, 1, "", 1);
+    test(S("abcde"), 2, 1, "abcde", 2);
+    test(S("abcde"), 2, 1, "abcdefghij", 2);
+    test(S("abcde"), 2, 1, "abcdefghijklmnopqrst", 2);
+    test(S("abcde"), 2, 2, "", 2);
+    test(S("abcde"), 2, 2, "abcde", 2);
+    test(S("abcde"), 2, 2, "abcdefghij", 2);
+    test(S("abcde"), 2, 2, "abcdefghijklmnopqrst", 2);
+    test(S("abcde"), 2, 3, "", 3);
+    test(S("abcde"), 2, 3, "abcde", 2);
+    test(S("abcde"), 2, 3, "abcdefghij", 2);
+    test(S("abcde"), 2, 3, "abcdefghijklmnopqrst", 2);
+    test(S("abcde"), 2, 4, "", 3);
+    test(S("abcde"), 2, 4, "abcde", 2);
+    test(S("abcde"), 2, 4, "abcdefghij", 2);
+    test(S("abcde"), 2, 4, "abcdefghijklmnopqrst", 2);
+    test(S("abcde"), 4, 0, "", 0);
+    test(S("abcde"), 4, 0, "abcde", -5);
+    test(S("abcde"), 4, 0, "abcdefghij", -10);
+    test(S("abcde"), 4, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), 4, 1, "", 1);
+    test(S("abcde"), 4, 1, "abcde", 4);
+    test(S("abcde"), 4, 1, "abcdefghij", 4);
+    test(S("abcde"), 4, 1, "abcdefghijklmnopqrst", 4);
+    test(S("abcde"), 4, 2, "", 1);
+    test(S("abcde"), 4, 2, "abcde", 4);
+    test(S("abcde"), 4, 2, "abcdefghij", 4);
+    test(S("abcde"), 4, 2, "abcdefghijklmnopqrst", 4);
+    test(S("abcde"), 5, 0, "", 0);
+    test(S("abcde"), 5, 0, "abcde", -5);
+    test(S("abcde"), 5, 0, "abcdefghij", -10);
+    test(S("abcde"), 5, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcde"), 5, 1, "", 0);
+    test(S("abcde"), 5, 1, "abcde", -5);
+    test(S("abcde"), 5, 1, "abcdefghij", -10);
+    test(S("abcde"), 5, 1, "abcdefghijklmnopqrst", -20);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("abcde"), 6, 0, "", 0);
+    test(S("abcde"), 6, 0, "abcde", 0);
+    test(S("abcde"), 6, 0, "abcdefghij", 0);
+    test(S("abcde"), 6, 0, "abcdefghijklmnopqrst", 0);
+    test(S("abcdefghij"), 0, 0, "", 0);
+    test(S("abcdefghij"), 0, 0, "abcde", -5);
+    test(S("abcdefghij"), 0, 0, "abcdefghij", -10);
+    test(S("abcdefghij"), 0, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghij"), 0, 1, "", 1);
+    test(S("abcdefghij"), 0, 1, "abcde", -4);
+    test(S("abcdefghij"), 0, 1, "abcdefghij", -9);
+    test(S("abcdefghij"), 0, 1, "abcdefghijklmnopqrst", -19);
+    test(S("abcdefghij"), 0, 5, "", 5);
+    test(S("abcdefghij"), 0, 5, "abcde", 0);
+    test(S("abcdefghij"), 0, 5, "abcdefghij", -5);
+    test(S("abcdefghij"), 0, 5, "abcdefghijklmnopqrst", -15);
+    test(S("abcdefghij"), 0, 9, "", 9);
+    test(S("abcdefghij"), 0, 9, "abcde", 4);
+    test(S("abcdefghij"), 0, 9, "abcdefghij", -1);
+    test(S("abcdefghij"), 0, 9, "abcdefghijklmnopqrst", -11);
+    test(S("abcdefghij"), 0, 10, "", 10);
+    test(S("abcdefghij"), 0, 10, "abcde", 5);
+    test(S("abcdefghij"), 0, 10, "abcdefghij", 0);
+    test(S("abcdefghij"), 0, 10, "abcdefghijklmnopqrst", -10);
+    test(S("abcdefghij"), 0, 11, "", 10);
+    test(S("abcdefghij"), 0, 11, "abcde", 5);
+    test(S("abcdefghij"), 0, 11, "abcdefghij", 0);
+    test(S("abcdefghij"), 0, 11, "abcdefghijklmnopqrst", -10);
+    test(S("abcdefghij"), 1, 0, "", 0);
+    test(S("abcdefghij"), 1, 0, "abcde", -5);
+    test(S("abcdefghij"), 1, 0, "abcdefghij", -10);
+    test(S("abcdefghij"), 1, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghij"), 1, 1, "", 1);
+    test(S("abcdefghij"), 1, 1, "abcde", 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghij", 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghij"), 1, 4, "", 4);
+    test(S("abcdefghij"), 1, 4, "abcde", 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghij", 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghij"), 1, 8, "", 8);
+    test(S("abcdefghij"), 1, 8, "abcde", 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghij", 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghij"), 1, 9, "", 9);
+    test(S("abcdefghij"), 1, 9, "abcde", 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghij", 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghij"), 1, 10, "", 9);
+    test(S("abcdefghij"), 1, 10, "abcde", 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghij", 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghij"), 5, 0, "", 0);
+    test(S("abcdefghij"), 5, 0, "abcde", -5);
+    test(S("abcdefghij"), 5, 0, "abcdefghij", -10);
+    test(S("abcdefghij"), 5, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghij"), 5, 1, "", 1);
+    test(S("abcdefghij"), 5, 1, "abcde", 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghij", 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghijklmnopqrst", 5);
+    test(S("abcdefghij"), 5, 2, "", 2);
+    test(S("abcdefghij"), 5, 2, "abcde", 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghij", 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghijklmnopqrst", 5);
+    test(S("abcdefghij"), 5, 4, "", 4);
+    test(S("abcdefghij"), 5, 4, "abcde", 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghij", 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghijklmnopqrst", 5);
+    test(S("abcdefghij"), 5, 5, "", 5);
+    test(S("abcdefghij"), 5, 5, "abcde", 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghij", 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghijklmnopqrst", 5);
+    test(S("abcdefghij"), 5, 6, "", 5);
+    test(S("abcdefghij"), 5, 6, "abcde", 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghij", 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghijklmnopqrst", 5);
+    test(S("abcdefghij"), 9, 0, "", 0);
+    test(S("abcdefghij"), 9, 0, "abcde", -5);
+    test(S("abcdefghij"), 9, 0, "abcdefghij", -10);
+    test(S("abcdefghij"), 9, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghij"), 9, 1, "", 1);
+    test(S("abcdefghij"), 9, 1, "abcde", 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghij", 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghijklmnopqrst", 9);
+    test(S("abcdefghij"), 9, 2, "", 1);
+    test(S("abcdefghij"), 9, 2, "abcde", 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghij", 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghijklmnopqrst", 9);
+    test(S("abcdefghij"), 10, 0, "", 0);
+    test(S("abcdefghij"), 10, 0, "abcde", -5);
+    test(S("abcdefghij"), 10, 0, "abcdefghij", -10);
+    test(S("abcdefghij"), 10, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghij"), 10, 1, "", 0);
+    test(S("abcdefghij"), 10, 1, "abcde", -5);
+    test(S("abcdefghij"), 10, 1, "abcdefghij", -10);
+    test(S("abcdefghij"), 10, 1, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghij"), 11, 0, "", 0);
+    test(S("abcdefghij"), 11, 0, "abcde", 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghij", 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghijklmnopqrst", 0);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, "", 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcde", -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghij", -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "", 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcde", -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghij", -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghijklmnopqrst", -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "", 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcde", 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghij", 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghijklmnopqrst", -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "", 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcde", 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghij", 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghijklmnopqrst", -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "", 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcde", 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghijklmnopqrst", 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "", 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcde", 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghijklmnopqrst", 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "", 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcde", -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghij", -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcde", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghij", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "", 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcde", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghij", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "", 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcde", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghij", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "", 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcde", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghij", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "", 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcde", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghij", 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghijklmnopqrst", 1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "", 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcde", -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghij", -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "", 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcde", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghijklmnopqrst", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "", 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcde", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghijklmnopqrst", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "", 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcde", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghijklmnopqrst", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcde", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghijklmnopqrst", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcde", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghij", 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghijklmnopqrst", 10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "", 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcde", -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghij", -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "", 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcde", 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghij", 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghijklmnopqrst", 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "", 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcde", 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghij", 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghijklmnopqrst", 19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "", 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcde", -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghij", -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "", 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcde", -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghij", -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghijklmnopqrst", -20);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "", 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcde", 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghij", 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghijklmnopqrst", 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_pointer_size.pass.cpp
new file mode 100644
index 0000000..5bc00fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_pointer_size.pass.cpp
@@ -0,0 +1,1360 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(size_type pos, size_type n1, const charT *s, size_type n2) const; // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "min_allocator.h"
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type pos, typename S::size_type n1,
+     const typename S::value_type* str, typename S::size_type n2, int x)
+{
+    if (pos <= s.size())
+        assert(sign(s.compare(pos, n1, str, n2)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos, n1, str, n2);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > s.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, "", 0, 0);
+    test(S(""), 0, 0, "abcde", 0, 0);
+    test(S(""), 0, 0, "abcde", 1, -1);
+    test(S(""), 0, 0, "abcde", 2, -2);
+    test(S(""), 0, 0, "abcde", 4, -4);
+    test(S(""), 0, 0, "abcde", 5, -5);
+    test(S(""), 0, 0, "abcdefghij", 0, 0);
+    test(S(""), 0, 0, "abcdefghij", 1, -1);
+    test(S(""), 0, 0, "abcdefghij", 5, -5);
+    test(S(""), 0, 0, "abcdefghij", 9, -9);
+    test(S(""), 0, 0, "abcdefghij", 10, -10);
+    test(S(""), 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S(""), 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S(""), 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S(""), 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S(""), 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S(""), 0, 1, "", 0, 0);
+    test(S(""), 0, 1, "abcde", 0, 0);
+    test(S(""), 0, 1, "abcde", 1, -1);
+    test(S(""), 0, 1, "abcde", 2, -2);
+    test(S(""), 0, 1, "abcde", 4, -4);
+    test(S(""), 0, 1, "abcde", 5, -5);
+    test(S(""), 0, 1, "abcdefghij", 0, 0);
+    test(S(""), 0, 1, "abcdefghij", 1, -1);
+    test(S(""), 0, 1, "abcdefghij", 5, -5);
+    test(S(""), 0, 1, "abcdefghij", 9, -9);
+    test(S(""), 0, 1, "abcdefghij", 10, -10);
+    test(S(""), 0, 1, "abcdefghijklmnopqrst", 0, 0);
+    test(S(""), 0, 1, "abcdefghijklmnopqrst", 1, -1);
+    test(S(""), 0, 1, "abcdefghijklmnopqrst", 10, -10);
+    test(S(""), 0, 1, "abcdefghijklmnopqrst", 19, -19);
+    test(S(""), 0, 1, "abcdefghijklmnopqrst", 20, -20);
+    test(S(""), 1, 0, "", 0, 0);
+    test(S(""), 1, 0, "abcde", 0, 0);
+    test(S(""), 1, 0, "abcde", 1, 0);
+    test(S(""), 1, 0, "abcde", 2, 0);
+    test(S(""), 1, 0, "abcde", 4, 0);
+    test(S(""), 1, 0, "abcde", 5, 0);
+    test(S(""), 1, 0, "abcdefghij", 0, 0);
+    test(S(""), 1, 0, "abcdefghij", 1, 0);
+    test(S(""), 1, 0, "abcdefghij", 5, 0);
+    test(S(""), 1, 0, "abcdefghij", 9, 0);
+    test(S(""), 1, 0, "abcdefghij", 10, 0);
+    test(S(""), 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S(""), 1, 0, "abcdefghijklmnopqrst", 1, 0);
+    test(S(""), 1, 0, "abcdefghijklmnopqrst", 10, 0);
+    test(S(""), 1, 0, "abcdefghijklmnopqrst", 19, 0);
+    test(S(""), 1, 0, "abcdefghijklmnopqrst", 20, 0);
+    test(S("abcde"), 0, 0, "", 0, 0);
+    test(S("abcde"), 0, 0, "abcde", 0, 0);
+    test(S("abcde"), 0, 0, "abcde", 1, -1);
+    test(S("abcde"), 0, 0, "abcde", 2, -2);
+    test(S("abcde"), 0, 0, "abcde", 4, -4);
+    test(S("abcde"), 0, 0, "abcde", 5, -5);
+    test(S("abcde"), 0, 0, "abcdefghij", 0, 0);
+    test(S("abcde"), 0, 0, "abcdefghij", 1, -1);
+    test(S("abcde"), 0, 0, "abcdefghij", 5, -5);
+    test(S("abcde"), 0, 0, "abcdefghij", 9, -9);
+    test(S("abcde"), 0, 0, "abcdefghij", 10, -10);
+    test(S("abcde"), 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcde"), 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcde"), 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcde"), 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcde"), 0, 1, "", 0, 1);
+    test(S("abcde"), 0, 1, "abcde", 0, 1);
+    test(S("abcde"), 0, 1, "abcde", 1, 0);
+    test(S("abcde"), 0, 1, "abcde", 2, -1);
+    test(S("abcde"), 0, 1, "abcde", 4, -3);
+    test(S("abcde"), 0, 1, "abcde", 5, -4);
+    test(S("abcde"), 0, 1, "abcdefghij", 0, 1);
+    test(S("abcde"), 0, 1, "abcdefghij", 1, 0);
+    test(S("abcde"), 0, 1, "abcdefghij", 5, -4);
+    test(S("abcde"), 0, 1, "abcdefghij", 9, -8);
+    test(S("abcde"), 0, 1, "abcdefghij", 10, -9);
+    test(S("abcde"), 0, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcde"), 0, 1, "abcdefghijklmnopqrst", 1, 0);
+    test(S("abcde"), 0, 1, "abcdefghijklmnopqrst", 10, -9);
+    test(S("abcde"), 0, 1, "abcdefghijklmnopqrst", 19, -18);
+    test(S("abcde"), 0, 1, "abcdefghijklmnopqrst", 20, -19);
+    test(S("abcde"), 0, 2, "", 0, 2);
+    test(S("abcde"), 0, 2, "abcde", 0, 2);
+    test(S("abcde"), 0, 2, "abcde", 1, 1);
+    test(S("abcde"), 0, 2, "abcde", 2, 0);
+    test(S("abcde"), 0, 2, "abcde", 4, -2);
+    test(S("abcde"), 0, 2, "abcde", 5, -3);
+    test(S("abcde"), 0, 2, "abcdefghij", 0, 2);
+    test(S("abcde"), 0, 2, "abcdefghij", 1, 1);
+    test(S("abcde"), 0, 2, "abcdefghij", 5, -3);
+    test(S("abcde"), 0, 2, "abcdefghij", 9, -7);
+    test(S("abcde"), 0, 2, "abcdefghij", 10, -8);
+    test(S("abcde"), 0, 2, "abcdefghijklmnopqrst", 0, 2);
+    test(S("abcde"), 0, 2, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcde"), 0, 2, "abcdefghijklmnopqrst", 10, -8);
+    test(S("abcde"), 0, 2, "abcdefghijklmnopqrst", 19, -17);
+    test(S("abcde"), 0, 2, "abcdefghijklmnopqrst", 20, -18);
+    test(S("abcde"), 0, 4, "", 0, 4);
+    test(S("abcde"), 0, 4, "abcde", 0, 4);
+    test(S("abcde"), 0, 4, "abcde", 1, 3);
+    test(S("abcde"), 0, 4, "abcde", 2, 2);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S("abcde"), 0, 4, "abcde", 4, 0);
+    test(S("abcde"), 0, 4, "abcde", 5, -1);
+    test(S("abcde"), 0, 4, "abcdefghij", 0, 4);
+    test(S("abcde"), 0, 4, "abcdefghij", 1, 3);
+    test(S("abcde"), 0, 4, "abcdefghij", 5, -1);
+    test(S("abcde"), 0, 4, "abcdefghij", 9, -5);
+    test(S("abcde"), 0, 4, "abcdefghij", 10, -6);
+    test(S("abcde"), 0, 4, "abcdefghijklmnopqrst", 0, 4);
+    test(S("abcde"), 0, 4, "abcdefghijklmnopqrst", 1, 3);
+    test(S("abcde"), 0, 4, "abcdefghijklmnopqrst", 10, -6);
+    test(S("abcde"), 0, 4, "abcdefghijklmnopqrst", 19, -15);
+    test(S("abcde"), 0, 4, "abcdefghijklmnopqrst", 20, -16);
+    test(S("abcde"), 0, 5, "", 0, 5);
+    test(S("abcde"), 0, 5, "abcde", 0, 5);
+    test(S("abcde"), 0, 5, "abcde", 1, 4);
+    test(S("abcde"), 0, 5, "abcde", 2, 3);
+    test(S("abcde"), 0, 5, "abcde", 4, 1);
+    test(S("abcde"), 0, 5, "abcde", 5, 0);
+    test(S("abcde"), 0, 5, "abcdefghij", 0, 5);
+    test(S("abcde"), 0, 5, "abcdefghij", 1, 4);
+    test(S("abcde"), 0, 5, "abcdefghij", 5, 0);
+    test(S("abcde"), 0, 5, "abcdefghij", 9, -4);
+    test(S("abcde"), 0, 5, "abcdefghij", 10, -5);
+    test(S("abcde"), 0, 5, "abcdefghijklmnopqrst", 0, 5);
+    test(S("abcde"), 0, 5, "abcdefghijklmnopqrst", 1, 4);
+    test(S("abcde"), 0, 5, "abcdefghijklmnopqrst", 10, -5);
+    test(S("abcde"), 0, 5, "abcdefghijklmnopqrst", 19, -14);
+    test(S("abcde"), 0, 5, "abcdefghijklmnopqrst", 20, -15);
+    test(S("abcde"), 0, 6, "", 0, 5);
+    test(S("abcde"), 0, 6, "abcde", 0, 5);
+    test(S("abcde"), 0, 6, "abcde", 1, 4);
+    test(S("abcde"), 0, 6, "abcde", 2, 3);
+    test(S("abcde"), 0, 6, "abcde", 4, 1);
+    test(S("abcde"), 0, 6, "abcde", 5, 0);
+    test(S("abcde"), 0, 6, "abcdefghij", 0, 5);
+    test(S("abcde"), 0, 6, "abcdefghij", 1, 4);
+    test(S("abcde"), 0, 6, "abcdefghij", 5, 0);
+    test(S("abcde"), 0, 6, "abcdefghij", 9, -4);
+    test(S("abcde"), 0, 6, "abcdefghij", 10, -5);
+    test(S("abcde"), 0, 6, "abcdefghijklmnopqrst", 0, 5);
+    test(S("abcde"), 0, 6, "abcdefghijklmnopqrst", 1, 4);
+    test(S("abcde"), 0, 6, "abcdefghijklmnopqrst", 10, -5);
+    test(S("abcde"), 0, 6, "abcdefghijklmnopqrst", 19, -14);
+    test(S("abcde"), 0, 6, "abcdefghijklmnopqrst", 20, -15);
+    test(S("abcde"), 1, 0, "", 0, 0);
+    test(S("abcde"), 1, 0, "abcde", 0, 0);
+    test(S("abcde"), 1, 0, "abcde", 1, -1);
+    test(S("abcde"), 1, 0, "abcde", 2, -2);
+    test(S("abcde"), 1, 0, "abcde", 4, -4);
+    test(S("abcde"), 1, 0, "abcde", 5, -5);
+    test(S("abcde"), 1, 0, "abcdefghij", 0, 0);
+    test(S("abcde"), 1, 0, "abcdefghij", 1, -1);
+    test(S("abcde"), 1, 0, "abcdefghij", 5, -5);
+    test(S("abcde"), 1, 0, "abcdefghij", 9, -9);
+    test(S("abcde"), 1, 0, "abcdefghij", 10, -10);
+    test(S("abcde"), 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 1, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcde"), 1, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcde"), 1, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcde"), 1, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcde"), 1, 1, "", 0, 1);
+    test(S("abcde"), 1, 1, "abcde", 0, 1);
+    test(S("abcde"), 1, 1, "abcde", 1, 1);
+    test(S("abcde"), 1, 1, "abcde", 2, 1);
+    test(S("abcde"), 1, 1, "abcde", 4, 1);
+    test(S("abcde"), 1, 1, "abcde", 5, 1);
+    test(S("abcde"), 1, 1, "abcdefghij", 0, 1);
+    test(S("abcde"), 1, 1, "abcdefghij", 1, 1);
+    test(S("abcde"), 1, 1, "abcdefghij", 5, 1);
+    test(S("abcde"), 1, 1, "abcdefghij", 9, 1);
+    test(S("abcde"), 1, 1, "abcdefghij", 10, 1);
+    test(S("abcde"), 1, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcde"), 1, 1, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcde"), 1, 1, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcde"), 1, 1, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcde"), 1, 1, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcde"), 1, 2, "", 0, 2);
+    test(S("abcde"), 1, 2, "abcde", 0, 2);
+    test(S("abcde"), 1, 2, "abcde", 1, 1);
+    test(S("abcde"), 1, 2, "abcde", 2, 1);
+    test(S("abcde"), 1, 2, "abcde", 4, 1);
+    test(S("abcde"), 1, 2, "abcde", 5, 1);
+    test(S("abcde"), 1, 2, "abcdefghij", 0, 2);
+    test(S("abcde"), 1, 2, "abcdefghij", 1, 1);
+    test(S("abcde"), 1, 2, "abcdefghij", 5, 1);
+    test(S("abcde"), 1, 2, "abcdefghij", 9, 1);
+    test(S("abcde"), 1, 2, "abcdefghij", 10, 1);
+    test(S("abcde"), 1, 2, "abcdefghijklmnopqrst", 0, 2);
+    test(S("abcde"), 1, 2, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcde"), 1, 2, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcde"), 1, 2, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcde"), 1, 2, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcde"), 1, 3, "", 0, 3);
+    test(S("abcde"), 1, 3, "abcde", 0, 3);
+    test(S("abcde"), 1, 3, "abcde", 1, 1);
+    test(S("abcde"), 1, 3, "abcde", 2, 1);
+    test(S("abcde"), 1, 3, "abcde", 4, 1);
+    test(S("abcde"), 1, 3, "abcde", 5, 1);
+    test(S("abcde"), 1, 3, "abcdefghij", 0, 3);
+    test(S("abcde"), 1, 3, "abcdefghij", 1, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S("abcde"), 1, 3, "abcdefghij", 5, 1);
+    test(S("abcde"), 1, 3, "abcdefghij", 9, 1);
+    test(S("abcde"), 1, 3, "abcdefghij", 10, 1);
+    test(S("abcde"), 1, 3, "abcdefghijklmnopqrst", 0, 3);
+    test(S("abcde"), 1, 3, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcde"), 1, 3, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcde"), 1, 3, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcde"), 1, 3, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcde"), 1, 4, "", 0, 4);
+    test(S("abcde"), 1, 4, "abcde", 0, 4);
+    test(S("abcde"), 1, 4, "abcde", 1, 1);
+    test(S("abcde"), 1, 4, "abcde", 2, 1);
+    test(S("abcde"), 1, 4, "abcde", 4, 1);
+    test(S("abcde"), 1, 4, "abcde", 5, 1);
+    test(S("abcde"), 1, 4, "abcdefghij", 0, 4);
+    test(S("abcde"), 1, 4, "abcdefghij", 1, 1);
+    test(S("abcde"), 1, 4, "abcdefghij", 5, 1);
+    test(S("abcde"), 1, 4, "abcdefghij", 9, 1);
+    test(S("abcde"), 1, 4, "abcdefghij", 10, 1);
+    test(S("abcde"), 1, 4, "abcdefghijklmnopqrst", 0, 4);
+    test(S("abcde"), 1, 4, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcde"), 1, 4, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcde"), 1, 4, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcde"), 1, 4, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcde"), 1, 5, "", 0, 4);
+    test(S("abcde"), 1, 5, "abcde", 0, 4);
+    test(S("abcde"), 1, 5, "abcde", 1, 1);
+    test(S("abcde"), 1, 5, "abcde", 2, 1);
+    test(S("abcde"), 1, 5, "abcde", 4, 1);
+    test(S("abcde"), 1, 5, "abcde", 5, 1);
+    test(S("abcde"), 1, 5, "abcdefghij", 0, 4);
+    test(S("abcde"), 1, 5, "abcdefghij", 1, 1);
+    test(S("abcde"), 1, 5, "abcdefghij", 5, 1);
+    test(S("abcde"), 1, 5, "abcdefghij", 9, 1);
+    test(S("abcde"), 1, 5, "abcdefghij", 10, 1);
+    test(S("abcde"), 1, 5, "abcdefghijklmnopqrst", 0, 4);
+    test(S("abcde"), 1, 5, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcde"), 1, 5, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcde"), 1, 5, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcde"), 1, 5, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcde"), 2, 0, "", 0, 0);
+    test(S("abcde"), 2, 0, "abcde", 0, 0);
+    test(S("abcde"), 2, 0, "abcde", 1, -1);
+    test(S("abcde"), 2, 0, "abcde", 2, -2);
+    test(S("abcde"), 2, 0, "abcde", 4, -4);
+    test(S("abcde"), 2, 0, "abcde", 5, -5);
+    test(S("abcde"), 2, 0, "abcdefghij", 0, 0);
+    test(S("abcde"), 2, 0, "abcdefghij", 1, -1);
+    test(S("abcde"), 2, 0, "abcdefghij", 5, -5);
+    test(S("abcde"), 2, 0, "abcdefghij", 9, -9);
+    test(S("abcde"), 2, 0, "abcdefghij", 10, -10);
+    test(S("abcde"), 2, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 2, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcde"), 2, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcde"), 2, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcde"), 2, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcde"), 2, 1, "", 0, 1);
+    test(S("abcde"), 2, 1, "abcde", 0, 1);
+    test(S("abcde"), 2, 1, "abcde", 1, 2);
+    test(S("abcde"), 2, 1, "abcde", 2, 2);
+    test(S("abcde"), 2, 1, "abcde", 4, 2);
+    test(S("abcde"), 2, 1, "abcde", 5, 2);
+    test(S("abcde"), 2, 1, "abcdefghij", 0, 1);
+    test(S("abcde"), 2, 1, "abcdefghij", 1, 2);
+    test(S("abcde"), 2, 1, "abcdefghij", 5, 2);
+    test(S("abcde"), 2, 1, "abcdefghij", 9, 2);
+    test(S("abcde"), 2, 1, "abcdefghij", 10, 2);
+    test(S("abcde"), 2, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcde"), 2, 1, "abcdefghijklmnopqrst", 1, 2);
+    test(S("abcde"), 2, 1, "abcdefghijklmnopqrst", 10, 2);
+    test(S("abcde"), 2, 1, "abcdefghijklmnopqrst", 19, 2);
+    test(S("abcde"), 2, 1, "abcdefghijklmnopqrst", 20, 2);
+    test(S("abcde"), 2, 2, "", 0, 2);
+    test(S("abcde"), 2, 2, "abcde", 0, 2);
+    test(S("abcde"), 2, 2, "abcde", 1, 2);
+    test(S("abcde"), 2, 2, "abcde", 2, 2);
+    test(S("abcde"), 2, 2, "abcde", 4, 2);
+    test(S("abcde"), 2, 2, "abcde", 5, 2);
+    test(S("abcde"), 2, 2, "abcdefghij", 0, 2);
+    test(S("abcde"), 2, 2, "abcdefghij", 1, 2);
+    test(S("abcde"), 2, 2, "abcdefghij", 5, 2);
+    test(S("abcde"), 2, 2, "abcdefghij", 9, 2);
+    test(S("abcde"), 2, 2, "abcdefghij", 10, 2);
+    test(S("abcde"), 2, 2, "abcdefghijklmnopqrst", 0, 2);
+    test(S("abcde"), 2, 2, "abcdefghijklmnopqrst", 1, 2);
+    test(S("abcde"), 2, 2, "abcdefghijklmnopqrst", 10, 2);
+    test(S("abcde"), 2, 2, "abcdefghijklmnopqrst", 19, 2);
+    test(S("abcde"), 2, 2, "abcdefghijklmnopqrst", 20, 2);
+    test(S("abcde"), 2, 3, "", 0, 3);
+    test(S("abcde"), 2, 3, "abcde", 0, 3);
+    test(S("abcde"), 2, 3, "abcde", 1, 2);
+    test(S("abcde"), 2, 3, "abcde", 2, 2);
+    test(S("abcde"), 2, 3, "abcde", 4, 2);
+    test(S("abcde"), 2, 3, "abcde", 5, 2);
+    test(S("abcde"), 2, 3, "abcdefghij", 0, 3);
+    test(S("abcde"), 2, 3, "abcdefghij", 1, 2);
+    test(S("abcde"), 2, 3, "abcdefghij", 5, 2);
+    test(S("abcde"), 2, 3, "abcdefghij", 9, 2);
+    test(S("abcde"), 2, 3, "abcdefghij", 10, 2);
+    test(S("abcde"), 2, 3, "abcdefghijklmnopqrst", 0, 3);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 2, 3, "abcdefghijklmnopqrst", 1, 2);
+    test(S("abcde"), 2, 3, "abcdefghijklmnopqrst", 10, 2);
+    test(S("abcde"), 2, 3, "abcdefghijklmnopqrst", 19, 2);
+    test(S("abcde"), 2, 3, "abcdefghijklmnopqrst", 20, 2);
+    test(S("abcde"), 2, 4, "", 0, 3);
+    test(S("abcde"), 2, 4, "abcde", 0, 3);
+    test(S("abcde"), 2, 4, "abcde", 1, 2);
+    test(S("abcde"), 2, 4, "abcde", 2, 2);
+    test(S("abcde"), 2, 4, "abcde", 4, 2);
+    test(S("abcde"), 2, 4, "abcde", 5, 2);
+    test(S("abcde"), 2, 4, "abcdefghij", 0, 3);
+    test(S("abcde"), 2, 4, "abcdefghij", 1, 2);
+    test(S("abcde"), 2, 4, "abcdefghij", 5, 2);
+    test(S("abcde"), 2, 4, "abcdefghij", 9, 2);
+    test(S("abcde"), 2, 4, "abcdefghij", 10, 2);
+    test(S("abcde"), 2, 4, "abcdefghijklmnopqrst", 0, 3);
+    test(S("abcde"), 2, 4, "abcdefghijklmnopqrst", 1, 2);
+    test(S("abcde"), 2, 4, "abcdefghijklmnopqrst", 10, 2);
+    test(S("abcde"), 2, 4, "abcdefghijklmnopqrst", 19, 2);
+    test(S("abcde"), 2, 4, "abcdefghijklmnopqrst", 20, 2);
+    test(S("abcde"), 4, 0, "", 0, 0);
+    test(S("abcde"), 4, 0, "abcde", 0, 0);
+    test(S("abcde"), 4, 0, "abcde", 1, -1);
+    test(S("abcde"), 4, 0, "abcde", 2, -2);
+    test(S("abcde"), 4, 0, "abcde", 4, -4);
+    test(S("abcde"), 4, 0, "abcde", 5, -5);
+    test(S("abcde"), 4, 0, "abcdefghij", 0, 0);
+    test(S("abcde"), 4, 0, "abcdefghij", 1, -1);
+    test(S("abcde"), 4, 0, "abcdefghij", 5, -5);
+    test(S("abcde"), 4, 0, "abcdefghij", 9, -9);
+    test(S("abcde"), 4, 0, "abcdefghij", 10, -10);
+    test(S("abcde"), 4, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 4, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcde"), 4, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcde"), 4, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcde"), 4, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcde"), 4, 1, "", 0, 1);
+    test(S("abcde"), 4, 1, "abcde", 0, 1);
+    test(S("abcde"), 4, 1, "abcde", 1, 4);
+    test(S("abcde"), 4, 1, "abcde", 2, 4);
+    test(S("abcde"), 4, 1, "abcde", 4, 4);
+    test(S("abcde"), 4, 1, "abcde", 5, 4);
+    test(S("abcde"), 4, 1, "abcdefghij", 0, 1);
+    test(S("abcde"), 4, 1, "abcdefghij", 1, 4);
+    test(S("abcde"), 4, 1, "abcdefghij", 5, 4);
+    test(S("abcde"), 4, 1, "abcdefghij", 9, 4);
+    test(S("abcde"), 4, 1, "abcdefghij", 10, 4);
+    test(S("abcde"), 4, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcde"), 4, 1, "abcdefghijklmnopqrst", 1, 4);
+    test(S("abcde"), 4, 1, "abcdefghijklmnopqrst", 10, 4);
+    test(S("abcde"), 4, 1, "abcdefghijklmnopqrst", 19, 4);
+    test(S("abcde"), 4, 1, "abcdefghijklmnopqrst", 20, 4);
+    test(S("abcde"), 4, 2, "", 0, 1);
+    test(S("abcde"), 4, 2, "abcde", 0, 1);
+    test(S("abcde"), 4, 2, "abcde", 1, 4);
+    test(S("abcde"), 4, 2, "abcde", 2, 4);
+    test(S("abcde"), 4, 2, "abcde", 4, 4);
+    test(S("abcde"), 4, 2, "abcde", 5, 4);
+    test(S("abcde"), 4, 2, "abcdefghij", 0, 1);
+    test(S("abcde"), 4, 2, "abcdefghij", 1, 4);
+    test(S("abcde"), 4, 2, "abcdefghij", 5, 4);
+    test(S("abcde"), 4, 2, "abcdefghij", 9, 4);
+    test(S("abcde"), 4, 2, "abcdefghij", 10, 4);
+    test(S("abcde"), 4, 2, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcde"), 4, 2, "abcdefghijklmnopqrst", 1, 4);
+    test(S("abcde"), 4, 2, "abcdefghijklmnopqrst", 10, 4);
+    test(S("abcde"), 4, 2, "abcdefghijklmnopqrst", 19, 4);
+    test(S("abcde"), 4, 2, "abcdefghijklmnopqrst", 20, 4);
+    test(S("abcde"), 5, 0, "", 0, 0);
+    test(S("abcde"), 5, 0, "abcde", 0, 0);
+    test(S("abcde"), 5, 0, "abcde", 1, -1);
+    test(S("abcde"), 5, 0, "abcde", 2, -2);
+    test(S("abcde"), 5, 0, "abcde", 4, -4);
+    test(S("abcde"), 5, 0, "abcde", 5, -5);
+    test(S("abcde"), 5, 0, "abcdefghij", 0, 0);
+    test(S("abcde"), 5, 0, "abcdefghij", 1, -1);
+    test(S("abcde"), 5, 0, "abcdefghij", 5, -5);
+    test(S("abcde"), 5, 0, "abcdefghij", 9, -9);
+    test(S("abcde"), 5, 0, "abcdefghij", 10, -10);
+    test(S("abcde"), 5, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 5, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcde"), 5, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcde"), 5, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcde"), 5, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcde"), 5, 1, "", 0, 0);
+    test(S("abcde"), 5, 1, "abcde", 0, 0);
+    test(S("abcde"), 5, 1, "abcde", 1, -1);
+    test(S("abcde"), 5, 1, "abcde", 2, -2);
+    test(S("abcde"), 5, 1, "abcde", 4, -4);
+    test(S("abcde"), 5, 1, "abcde", 5, -5);
+    test(S("abcde"), 5, 1, "abcdefghij", 0, 0);
+    test(S("abcde"), 5, 1, "abcdefghij", 1, -1);
+    test(S("abcde"), 5, 1, "abcdefghij", 5, -5);
+    test(S("abcde"), 5, 1, "abcdefghij", 9, -9);
+    test(S("abcde"), 5, 1, "abcdefghij", 10, -10);
+    test(S("abcde"), 5, 1, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 5, 1, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcde"), 5, 1, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcde"), 5, 1, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcde"), 5, 1, "abcdefghijklmnopqrst", 20, -20);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 6, 0, "", 0, 0);
+    test(S("abcde"), 6, 0, "abcde", 0, 0);
+    test(S("abcde"), 6, 0, "abcde", 1, 0);
+    test(S("abcde"), 6, 0, "abcde", 2, 0);
+    test(S("abcde"), 6, 0, "abcde", 4, 0);
+    test(S("abcde"), 6, 0, "abcde", 5, 0);
+    test(S("abcde"), 6, 0, "abcdefghij", 0, 0);
+    test(S("abcde"), 6, 0, "abcdefghij", 1, 0);
+    test(S("abcde"), 6, 0, "abcdefghij", 5, 0);
+    test(S("abcde"), 6, 0, "abcdefghij", 9, 0);
+    test(S("abcde"), 6, 0, "abcdefghij", 10, 0);
+    test(S("abcde"), 6, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcde"), 6, 0, "abcdefghijklmnopqrst", 1, 0);
+    test(S("abcde"), 6, 0, "abcdefghijklmnopqrst", 10, 0);
+    test(S("abcde"), 6, 0, "abcdefghijklmnopqrst", 19, 0);
+    test(S("abcde"), 6, 0, "abcdefghijklmnopqrst", 20, 0);
+    test(S("abcdefghij"), 0, 0, "", 0, 0);
+    test(S("abcdefghij"), 0, 0, "abcde", 0, 0);
+    test(S("abcdefghij"), 0, 0, "abcde", 1, -1);
+    test(S("abcdefghij"), 0, 0, "abcde", 2, -2);
+    test(S("abcdefghij"), 0, 0, "abcde", 4, -4);
+    test(S("abcdefghij"), 0, 0, "abcde", 5, -5);
+    test(S("abcdefghij"), 0, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 0, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghij"), 0, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghij"), 0, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghij"), 0, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghij"), 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghij"), 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghij"), 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghij"), 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghij"), 0, 1, "", 0, 1);
+    test(S("abcdefghij"), 0, 1, "abcde", 0, 1);
+    test(S("abcdefghij"), 0, 1, "abcde", 1, 0);
+    test(S("abcdefghij"), 0, 1, "abcde", 2, -1);
+    test(S("abcdefghij"), 0, 1, "abcde", 4, -3);
+    test(S("abcdefghij"), 0, 1, "abcde", 5, -4);
+    test(S("abcdefghij"), 0, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghij"), 0, 1, "abcdefghij", 1, 0);
+    test(S("abcdefghij"), 0, 1, "abcdefghij", 5, -4);
+    test(S("abcdefghij"), 0, 1, "abcdefghij", 9, -8);
+    test(S("abcdefghij"), 0, 1, "abcdefghij", 10, -9);
+    test(S("abcdefghij"), 0, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghij"), 0, 1, "abcdefghijklmnopqrst", 1, 0);
+    test(S("abcdefghij"), 0, 1, "abcdefghijklmnopqrst", 10, -9);
+    test(S("abcdefghij"), 0, 1, "abcdefghijklmnopqrst", 19, -18);
+    test(S("abcdefghij"), 0, 1, "abcdefghijklmnopqrst", 20, -19);
+    test(S("abcdefghij"), 0, 5, "", 0, 5);
+    test(S("abcdefghij"), 0, 5, "abcde", 0, 5);
+    test(S("abcdefghij"), 0, 5, "abcde", 1, 4);
+    test(S("abcdefghij"), 0, 5, "abcde", 2, 3);
+    test(S("abcdefghij"), 0, 5, "abcde", 4, 1);
+    test(S("abcdefghij"), 0, 5, "abcde", 5, 0);
+    test(S("abcdefghij"), 0, 5, "abcdefghij", 0, 5);
+    test(S("abcdefghij"), 0, 5, "abcdefghij", 1, 4);
+    test(S("abcdefghij"), 0, 5, "abcdefghij", 5, 0);
+    test(S("abcdefghij"), 0, 5, "abcdefghij", 9, -4);
+    test(S("abcdefghij"), 0, 5, "abcdefghij", 10, -5);
+    test(S("abcdefghij"), 0, 5, "abcdefghijklmnopqrst", 0, 5);
+    test(S("abcdefghij"), 0, 5, "abcdefghijklmnopqrst", 1, 4);
+    test(S("abcdefghij"), 0, 5, "abcdefghijklmnopqrst", 10, -5);
+    test(S("abcdefghij"), 0, 5, "abcdefghijklmnopqrst", 19, -14);
+    test(S("abcdefghij"), 0, 5, "abcdefghijklmnopqrst", 20, -15);
+    test(S("abcdefghij"), 0, 9, "", 0, 9);
+    test(S("abcdefghij"), 0, 9, "abcde", 0, 9);
+    test(S("abcdefghij"), 0, 9, "abcde", 1, 8);
+    test(S("abcdefghij"), 0, 9, "abcde", 2, 7);
+    test(S("abcdefghij"), 0, 9, "abcde", 4, 5);
+    test(S("abcdefghij"), 0, 9, "abcde", 5, 4);
+    test(S("abcdefghij"), 0, 9, "abcdefghij", 0, 9);
+    test(S("abcdefghij"), 0, 9, "abcdefghij", 1, 8);
+    test(S("abcdefghij"), 0, 9, "abcdefghij", 5, 4);
+    test(S("abcdefghij"), 0, 9, "abcdefghij", 9, 0);
+    test(S("abcdefghij"), 0, 9, "abcdefghij", 10, -1);
+    test(S("abcdefghij"), 0, 9, "abcdefghijklmnopqrst", 0, 9);
+    test(S("abcdefghij"), 0, 9, "abcdefghijklmnopqrst", 1, 8);
+    test(S("abcdefghij"), 0, 9, "abcdefghijklmnopqrst", 10, -1);
+    test(S("abcdefghij"), 0, 9, "abcdefghijklmnopqrst", 19, -10);
+    test(S("abcdefghij"), 0, 9, "abcdefghijklmnopqrst", 20, -11);
+    test(S("abcdefghij"), 0, 10, "", 0, 10);
+    test(S("abcdefghij"), 0, 10, "abcde", 0, 10);
+    test(S("abcdefghij"), 0, 10, "abcde", 1, 9);
+    test(S("abcdefghij"), 0, 10, "abcde", 2, 8);
+    test(S("abcdefghij"), 0, 10, "abcde", 4, 6);
+    test(S("abcdefghij"), 0, 10, "abcde", 5, 5);
+    test(S("abcdefghij"), 0, 10, "abcdefghij", 0, 10);
+    test(S("abcdefghij"), 0, 10, "abcdefghij", 1, 9);
+    test(S("abcdefghij"), 0, 10, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 0, 10, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 0, 10, "abcdefghij", 10, 0);
+    test(S("abcdefghij"), 0, 10, "abcdefghijklmnopqrst", 0, 10);
+    test(S("abcdefghij"), 0, 10, "abcdefghijklmnopqrst", 1, 9);
+    test(S("abcdefghij"), 0, 10, "abcdefghijklmnopqrst", 10, 0);
+    test(S("abcdefghij"), 0, 10, "abcdefghijklmnopqrst", 19, -9);
+    test(S("abcdefghij"), 0, 10, "abcdefghijklmnopqrst", 20, -10);
+    test(S("abcdefghij"), 0, 11, "", 0, 10);
+    test(S("abcdefghij"), 0, 11, "abcde", 0, 10);
+    test(S("abcdefghij"), 0, 11, "abcde", 1, 9);
+    test(S("abcdefghij"), 0, 11, "abcde", 2, 8);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcdefghij"), 0, 11, "abcde", 4, 6);
+    test(S("abcdefghij"), 0, 11, "abcde", 5, 5);
+    test(S("abcdefghij"), 0, 11, "abcdefghij", 0, 10);
+    test(S("abcdefghij"), 0, 11, "abcdefghij", 1, 9);
+    test(S("abcdefghij"), 0, 11, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 0, 11, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 0, 11, "abcdefghij", 10, 0);
+    test(S("abcdefghij"), 0, 11, "abcdefghijklmnopqrst", 0, 10);
+    test(S("abcdefghij"), 0, 11, "abcdefghijklmnopqrst", 1, 9);
+    test(S("abcdefghij"), 0, 11, "abcdefghijklmnopqrst", 10, 0);
+    test(S("abcdefghij"), 0, 11, "abcdefghijklmnopqrst", 19, -9);
+    test(S("abcdefghij"), 0, 11, "abcdefghijklmnopqrst", 20, -10);
+    test(S("abcdefghij"), 1, 0, "", 0, 0);
+    test(S("abcdefghij"), 1, 0, "abcde", 0, 0);
+    test(S("abcdefghij"), 1, 0, "abcde", 1, -1);
+    test(S("abcdefghij"), 1, 0, "abcde", 2, -2);
+    test(S("abcdefghij"), 1, 0, "abcde", 4, -4);
+    test(S("abcdefghij"), 1, 0, "abcde", 5, -5);
+    test(S("abcdefghij"), 1, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 1, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghij"), 1, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghij"), 1, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghij"), 1, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghij"), 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 1, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghij"), 1, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghij"), 1, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghij"), 1, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghij"), 1, 1, "", 0, 1);
+    test(S("abcdefghij"), 1, 1, "abcde", 0, 1);
+    test(S("abcdefghij"), 1, 1, "abcde", 1, 1);
+    test(S("abcdefghij"), 1, 1, "abcde", 2, 1);
+    test(S("abcdefghij"), 1, 1, "abcde", 4, 1);
+    test(S("abcdefghij"), 1, 1, "abcde", 5, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghij", 1, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghij", 5, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghij", 10, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghij"), 1, 1, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghij"), 1, 4, "", 0, 4);
+    test(S("abcdefghij"), 1, 4, "abcde", 0, 4);
+    test(S("abcdefghij"), 1, 4, "abcde", 1, 1);
+    test(S("abcdefghij"), 1, 4, "abcde", 2, 1);
+    test(S("abcdefghij"), 1, 4, "abcde", 4, 1);
+    test(S("abcdefghij"), 1, 4, "abcde", 5, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghij", 0, 4);
+    test(S("abcdefghij"), 1, 4, "abcdefghij", 1, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghij", 5, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghij", 10, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghijklmnopqrst", 0, 4);
+    test(S("abcdefghij"), 1, 4, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghij"), 1, 4, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghij"), 1, 8, "", 0, 8);
+    test(S("abcdefghij"), 1, 8, "abcde", 0, 8);
+    test(S("abcdefghij"), 1, 8, "abcde", 1, 1);
+    test(S("abcdefghij"), 1, 8, "abcde", 2, 1);
+    test(S("abcdefghij"), 1, 8, "abcde", 4, 1);
+    test(S("abcdefghij"), 1, 8, "abcde", 5, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghij", 0, 8);
+    test(S("abcdefghij"), 1, 8, "abcdefghij", 1, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghij", 5, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghij", 10, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghijklmnopqrst", 0, 8);
+    test(S("abcdefghij"), 1, 8, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghij"), 1, 8, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghij"), 1, 9, "", 0, 9);
+    test(S("abcdefghij"), 1, 9, "abcde", 0, 9);
+    test(S("abcdefghij"), 1, 9, "abcde", 1, 1);
+    test(S("abcdefghij"), 1, 9, "abcde", 2, 1);
+    test(S("abcdefghij"), 1, 9, "abcde", 4, 1);
+    test(S("abcdefghij"), 1, 9, "abcde", 5, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghij", 0, 9);
+    test(S("abcdefghij"), 1, 9, "abcdefghij", 1, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghij", 5, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghij", 10, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghijklmnopqrst", 0, 9);
+    test(S("abcdefghij"), 1, 9, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghij"), 1, 9, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghij"), 1, 10, "", 0, 9);
+    test(S("abcdefghij"), 1, 10, "abcde", 0, 9);
+    test(S("abcdefghij"), 1, 10, "abcde", 1, 1);
+    test(S("abcdefghij"), 1, 10, "abcde", 2, 1);
+    test(S("abcdefghij"), 1, 10, "abcde", 4, 1);
+    test(S("abcdefghij"), 1, 10, "abcde", 5, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghij", 0, 9);
+    test(S("abcdefghij"), 1, 10, "abcdefghij", 1, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcdefghij"), 1, 10, "abcdefghij", 5, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghij", 9, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghij", 10, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghijklmnopqrst", 0, 9);
+    test(S("abcdefghij"), 1, 10, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghij"), 1, 10, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghij"), 5, 0, "", 0, 0);
+    test(S("abcdefghij"), 5, 0, "abcde", 0, 0);
+    test(S("abcdefghij"), 5, 0, "abcde", 1, -1);
+    test(S("abcdefghij"), 5, 0, "abcde", 2, -2);
+    test(S("abcdefghij"), 5, 0, "abcde", 4, -4);
+    test(S("abcdefghij"), 5, 0, "abcde", 5, -5);
+    test(S("abcdefghij"), 5, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 5, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghij"), 5, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghij"), 5, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghij"), 5, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghij"), 5, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 5, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghij"), 5, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghij"), 5, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghij"), 5, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghij"), 5, 1, "", 0, 1);
+    test(S("abcdefghij"), 5, 1, "abcde", 0, 1);
+    test(S("abcdefghij"), 5, 1, "abcde", 1, 5);
+    test(S("abcdefghij"), 5, 1, "abcde", 2, 5);
+    test(S("abcdefghij"), 5, 1, "abcde", 4, 5);
+    test(S("abcdefghij"), 5, 1, "abcde", 5, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghij"), 5, 1, "abcdefghij", 1, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghij", 9, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghij", 10, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghij"), 5, 1, "abcdefghijklmnopqrst", 1, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghijklmnopqrst", 10, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghijklmnopqrst", 19, 5);
+    test(S("abcdefghij"), 5, 1, "abcdefghijklmnopqrst", 20, 5);
+    test(S("abcdefghij"), 5, 2, "", 0, 2);
+    test(S("abcdefghij"), 5, 2, "abcde", 0, 2);
+    test(S("abcdefghij"), 5, 2, "abcde", 1, 5);
+    test(S("abcdefghij"), 5, 2, "abcde", 2, 5);
+    test(S("abcdefghij"), 5, 2, "abcde", 4, 5);
+    test(S("abcdefghij"), 5, 2, "abcde", 5, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghij", 0, 2);
+    test(S("abcdefghij"), 5, 2, "abcdefghij", 1, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghij", 9, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghij", 10, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghijklmnopqrst", 0, 2);
+    test(S("abcdefghij"), 5, 2, "abcdefghijklmnopqrst", 1, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghijklmnopqrst", 10, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghijklmnopqrst", 19, 5);
+    test(S("abcdefghij"), 5, 2, "abcdefghijklmnopqrst", 20, 5);
+    test(S("abcdefghij"), 5, 4, "", 0, 4);
+    test(S("abcdefghij"), 5, 4, "abcde", 0, 4);
+    test(S("abcdefghij"), 5, 4, "abcde", 1, 5);
+    test(S("abcdefghij"), 5, 4, "abcde", 2, 5);
+    test(S("abcdefghij"), 5, 4, "abcde", 4, 5);
+    test(S("abcdefghij"), 5, 4, "abcde", 5, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghij", 0, 4);
+    test(S("abcdefghij"), 5, 4, "abcdefghij", 1, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghij", 9, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghij", 10, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghijklmnopqrst", 0, 4);
+    test(S("abcdefghij"), 5, 4, "abcdefghijklmnopqrst", 1, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghijklmnopqrst", 10, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghijklmnopqrst", 19, 5);
+    test(S("abcdefghij"), 5, 4, "abcdefghijklmnopqrst", 20, 5);
+    test(S("abcdefghij"), 5, 5, "", 0, 5);
+    test(S("abcdefghij"), 5, 5, "abcde", 0, 5);
+    test(S("abcdefghij"), 5, 5, "abcde", 1, 5);
+    test(S("abcdefghij"), 5, 5, "abcde", 2, 5);
+    test(S("abcdefghij"), 5, 5, "abcde", 4, 5);
+    test(S("abcdefghij"), 5, 5, "abcde", 5, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghij", 0, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghij", 1, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghij", 9, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghij", 10, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghijklmnopqrst", 0, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghijklmnopqrst", 1, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghijklmnopqrst", 10, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghijklmnopqrst", 19, 5);
+    test(S("abcdefghij"), 5, 5, "abcdefghijklmnopqrst", 20, 5);
+    test(S("abcdefghij"), 5, 6, "", 0, 5);
+    test(S("abcdefghij"), 5, 6, "abcde", 0, 5);
+    test(S("abcdefghij"), 5, 6, "abcde", 1, 5);
+    test(S("abcdefghij"), 5, 6, "abcde", 2, 5);
+    test(S("abcdefghij"), 5, 6, "abcde", 4, 5);
+    test(S("abcdefghij"), 5, 6, "abcde", 5, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghij", 0, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghij", 1, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghij", 5, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghij", 9, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghij", 10, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghijklmnopqrst", 0, 5);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcdefghij"), 5, 6, "abcdefghijklmnopqrst", 1, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghijklmnopqrst", 10, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghijklmnopqrst", 19, 5);
+    test(S("abcdefghij"), 5, 6, "abcdefghijklmnopqrst", 20, 5);
+    test(S("abcdefghij"), 9, 0, "", 0, 0);
+    test(S("abcdefghij"), 9, 0, "abcde", 0, 0);
+    test(S("abcdefghij"), 9, 0, "abcde", 1, -1);
+    test(S("abcdefghij"), 9, 0, "abcde", 2, -2);
+    test(S("abcdefghij"), 9, 0, "abcde", 4, -4);
+    test(S("abcdefghij"), 9, 0, "abcde", 5, -5);
+    test(S("abcdefghij"), 9, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 9, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghij"), 9, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghij"), 9, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghij"), 9, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghij"), 9, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 9, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghij"), 9, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghij"), 9, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghij"), 9, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghij"), 9, 1, "", 0, 1);
+    test(S("abcdefghij"), 9, 1, "abcde", 0, 1);
+    test(S("abcdefghij"), 9, 1, "abcde", 1, 9);
+    test(S("abcdefghij"), 9, 1, "abcde", 2, 9);
+    test(S("abcdefghij"), 9, 1, "abcde", 4, 9);
+    test(S("abcdefghij"), 9, 1, "abcde", 5, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghij"), 9, 1, "abcdefghij", 1, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghij", 5, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghij", 9, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghij", 10, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghij"), 9, 1, "abcdefghijklmnopqrst", 1, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghijklmnopqrst", 10, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghijklmnopqrst", 19, 9);
+    test(S("abcdefghij"), 9, 1, "abcdefghijklmnopqrst", 20, 9);
+    test(S("abcdefghij"), 9, 2, "", 0, 1);
+    test(S("abcdefghij"), 9, 2, "abcde", 0, 1);
+    test(S("abcdefghij"), 9, 2, "abcde", 1, 9);
+    test(S("abcdefghij"), 9, 2, "abcde", 2, 9);
+    test(S("abcdefghij"), 9, 2, "abcde", 4, 9);
+    test(S("abcdefghij"), 9, 2, "abcde", 5, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghij", 0, 1);
+    test(S("abcdefghij"), 9, 2, "abcdefghij", 1, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghij", 5, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghij", 9, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghij", 10, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghij"), 9, 2, "abcdefghijklmnopqrst", 1, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghijklmnopqrst", 10, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghijklmnopqrst", 19, 9);
+    test(S("abcdefghij"), 9, 2, "abcdefghijklmnopqrst", 20, 9);
+    test(S("abcdefghij"), 10, 0, "", 0, 0);
+    test(S("abcdefghij"), 10, 0, "abcde", 0, 0);
+    test(S("abcdefghij"), 10, 0, "abcde", 1, -1);
+    test(S("abcdefghij"), 10, 0, "abcde", 2, -2);
+    test(S("abcdefghij"), 10, 0, "abcde", 4, -4);
+    test(S("abcdefghij"), 10, 0, "abcde", 5, -5);
+    test(S("abcdefghij"), 10, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 10, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghij"), 10, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghij"), 10, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghij"), 10, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghij"), 10, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 10, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghij"), 10, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghij"), 10, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghij"), 10, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghij"), 10, 1, "", 0, 0);
+    test(S("abcdefghij"), 10, 1, "abcde", 0, 0);
+    test(S("abcdefghij"), 10, 1, "abcde", 1, -1);
+    test(S("abcdefghij"), 10, 1, "abcde", 2, -2);
+    test(S("abcdefghij"), 10, 1, "abcde", 4, -4);
+    test(S("abcdefghij"), 10, 1, "abcde", 5, -5);
+    test(S("abcdefghij"), 10, 1, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 10, 1, "abcdefghij", 1, -1);
+    test(S("abcdefghij"), 10, 1, "abcdefghij", 5, -5);
+    test(S("abcdefghij"), 10, 1, "abcdefghij", 9, -9);
+    test(S("abcdefghij"), 10, 1, "abcdefghij", 10, -10);
+    test(S("abcdefghij"), 10, 1, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 10, 1, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghij"), 10, 1, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghij"), 10, 1, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghij"), 10, 1, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghij"), 11, 0, "", 0, 0);
+    test(S("abcdefghij"), 11, 0, "abcde", 0, 0);
+    test(S("abcdefghij"), 11, 0, "abcde", 1, 0);
+    test(S("abcdefghij"), 11, 0, "abcde", 2, 0);
+    test(S("abcdefghij"), 11, 0, "abcde", 4, 0);
+    test(S("abcdefghij"), 11, 0, "abcde", 5, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghij", 1, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghij", 5, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghij", 9, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghij", 10, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghijklmnopqrst", 1, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghijklmnopqrst", 10, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghijklmnopqrst", 19, 0);
+    test(S("abcdefghij"), 11, 0, "abcdefghijklmnopqrst", 20, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcde", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcde", 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcde", 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcde", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcde", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcde", 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcde", 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcde", 4, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcde", 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghij", 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghij", 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghij", 9, -8);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghij", 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghijklmnopqrst", 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghijklmnopqrst", 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghijklmnopqrst", 19, -18);
+    test(S("abcdefghijklmnopqrst"), 0, 1, "abcdefghijklmnopqrst", 20, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcde", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcde", 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcde", 2, 8);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcde", 4, 6);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcde", 5, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghij", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghij", 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghij", 5, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghij", 9, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghij", 10, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghijklmnopqrst", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghijklmnopqrst", 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghijklmnopqrst", 10, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghijklmnopqrst", 19, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, "abcdefghijklmnopqrst", 20, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcde", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcde", 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcde", 2, 17);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcde", 4, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcde", 5, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghij", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghij", 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghij", 5, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghij", 9, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghij", 10, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghijklmnopqrst", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghijklmnopqrst", 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghijklmnopqrst", 10, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghijklmnopqrst", 19, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, "abcdefghijklmnopqrst", 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcde", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcde", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcde", 2, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcde", 4, 16);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcde", 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghij", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghij", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghij", 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghij", 9, 11);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghijklmnopqrst", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghijklmnopqrst", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, "abcdefghijklmnopqrst", 20, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcde", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcde", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcde", 2, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcde", 4, 16);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcde", 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghij", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghij", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghij", 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghij", 9, 11);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghijklmnopqrst", 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghijklmnopqrst", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, "abcdefghijklmnopqrst", 20, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcde", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcde", 2, -2);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcde", 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcde", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcde", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcde", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcde", 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcde", 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcde", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghij", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghij", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghij", 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghij", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcde", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcde", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcde", 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcde", 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcde", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghij", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghij", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghij", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghij", 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghij", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghijklmnopqrst", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "", 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcde", 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcde", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcde", 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcde", 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcde", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghij", 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghij", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghij", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghij", 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghij", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghijklmnopqrst", 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcde", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcde", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcde", 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcde", 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcde", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghij", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghij", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghij", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghij", 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghij", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghijklmnopqrst", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcde", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcde", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcde", 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcde", 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcde", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghij", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghij", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghij", 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghij", 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghij", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghijklmnopqrst", 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghijklmnopqrst", 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghijklmnopqrst", 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghijklmnopqrst", 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, "abcdefghijklmnopqrst", 20, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcde", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcde", 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcde", 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcde", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghij", 1, -1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcde", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcde", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcde", 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcde", 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcde", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghij", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghij", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghij", 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghijklmnopqrst", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghijklmnopqrst", 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, "abcdefghijklmnopqrst", 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "", 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcde", 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcde", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcde", 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcde", 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcde", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghij", 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghij", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghij", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghij", 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghijklmnopqrst", 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghijklmnopqrst", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghijklmnopqrst", 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, "abcdefghijklmnopqrst", 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcde", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcde", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcde", 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcde", 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcde", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghij", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghij", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghij", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghij", 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghijklmnopqrst", 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghijklmnopqrst", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghijklmnopqrst", 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, "abcdefghijklmnopqrst", 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcde", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcde", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcde", 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcde", 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcde", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghij", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghij", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghij", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghij", 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghijklmnopqrst", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghijklmnopqrst", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghijklmnopqrst", 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, "abcdefghijklmnopqrst", 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcde", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcde", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcde", 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcde", 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcde", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghij", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghij", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghij", 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghij", 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghij", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghijklmnopqrst", 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghijklmnopqrst", 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghijklmnopqrst", 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghijklmnopqrst", 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, "abcdefghijklmnopqrst", 20, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcde", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcde", 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcde", 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcde", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghijklmnopqrst", 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcde", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcde", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcde", 2, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcde", 4, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcde", 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghij", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghij", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghij", 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghij", 9, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghij", 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghijklmnopqrst", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghijklmnopqrst", 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghijklmnopqrst", 19, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, "abcdefghijklmnopqrst", 20, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcde", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcde", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcde", 2, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcde", 4, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcde", 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghij", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghij", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghij", 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghij", 9, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghij", 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghijklmnopqrst", 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghijklmnopqrst", 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghijklmnopqrst", 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghijklmnopqrst", 19, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, "abcdefghijklmnopqrst", 20, 19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcde", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcde", 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcde", 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcde", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghij", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghij", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghij", 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghij", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcde", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcde", 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcde", 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcde", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghij", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghij", 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghij", 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghij", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghijklmnopqrst", 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghijklmnopqrst", 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghijklmnopqrst", 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, "abcdefghijklmnopqrst", 20, -20);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcde", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcde", 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcde", 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcde", 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcde", 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghij", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghij", 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghij", 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghij", 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghij", 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghijklmnopqrst", 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghijklmnopqrst", 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghijklmnopqrst", 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghijklmnopqrst", 19, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, "abcdefghijklmnopqrst", 20, 0);
+
+    return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+  test10<S>();
+  test11<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+  static_assert(test10<S>());
+  static_assert(test11<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string.pass.cpp
new file mode 100644
index 0000000..e3b5756
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string.pass.cpp
@@ -0,0 +1,397 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(size_type pos1, size_type n1, const basic_string& str) const; // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type pos1, typename S::size_type n1,
+     const S& str, int x)
+{
+    if (pos1 <= s.size())
+        assert(sign(s.compare(pos1, n1, str)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, str);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > s.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), 0, 0, S(""), 0);
+    test(S(""), 0, 0, S("abcde"), -5);
+    test(S(""), 0, 0, S("abcdefghij"), -10);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S(""), 0, 1, S(""), 0);
+    test(S(""), 0, 1, S("abcde"), -5);
+    test(S(""), 0, 1, S("abcdefghij"), -10);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), -20);
+    test(S(""), 1, 0, S(""), 0);
+    test(S(""), 1, 0, S("abcde"), 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0);
+    test(S("abcde"), 0, 0, S(""), 0);
+    test(S("abcde"), 0, 0, S("abcde"), -5);
+    test(S("abcde"), 0, 0, S("abcdefghij"), -10);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 0, 1, S(""), 1);
+    test(S("abcde"), 0, 1, S("abcde"), -4);
+    test(S("abcde"), 0, 1, S("abcdefghij"), -9);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), -19);
+    test(S("abcde"), 0, 2, S(""), 2);
+    test(S("abcde"), 0, 2, S("abcde"), -3);
+    test(S("abcde"), 0, 2, S("abcdefghij"), -8);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), -18);
+    test(S("abcde"), 0, 4, S(""), 4);
+    test(S("abcde"), 0, 4, S("abcde"), -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), -6);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), -16);
+    test(S("abcde"), 0, 5, S(""), 5);
+    test(S("abcde"), 0, 5, S("abcde"), 0);
+    test(S("abcde"), 0, 5, S("abcdefghij"), -5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), -15);
+    test(S("abcde"), 0, 6, S(""), 5);
+    test(S("abcde"), 0, 6, S("abcde"), 0);
+    test(S("abcde"), 0, 6, S("abcdefghij"), -5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), -15);
+    test(S("abcde"), 1, 0, S(""), 0);
+    test(S("abcde"), 1, 0, S("abcde"), -5);
+    test(S("abcde"), 1, 0, S("abcdefghij"), -10);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 1, 1, S(""), 1);
+    test(S("abcde"), 1, 1, S("abcde"), 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 2, S(""), 2);
+    test(S("abcde"), 1, 2, S("abcde"), 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 3, S(""), 3);
+    test(S("abcde"), 1, 3, S("abcde"), 1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 4, S(""), 4);
+    test(S("abcde"), 1, 4, S("abcde"), 1);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 5, S(""), 4);
+    test(S("abcde"), 1, 5, S("abcde"), 1);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 2, 0, S(""), 0);
+    test(S("abcde"), 2, 0, S("abcde"), -5);
+    test(S("abcde"), 2, 0, S("abcdefghij"), -10);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 2, 1, S(""), 1);
+    test(S("abcde"), 2, 1, S("abcde"), 2);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 2);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 2, 2, S(""), 2);
+    test(S("abcde"), 2, 2, S("abcde"), 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 2, 3, S(""), 3);
+    test(S("abcde"), 2, 3, S("abcde"), 2);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 2);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 2, 4, S(""), 3);
+    test(S("abcde"), 2, 4, S("abcde"), 2);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 2);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 4, 0, S(""), 0);
+    test(S("abcde"), 4, 0, S("abcde"), -5);
+    test(S("abcde"), 4, 0, S("abcdefghij"), -10);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 4, 1, S(""), 1);
+    test(S("abcde"), 4, 1, S("abcde"), 4);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 4);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 4);
+    test(S("abcde"), 4, 2, S(""), 1);
+    test(S("abcde"), 4, 2, S("abcde"), 4);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 4);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 4);
+    test(S("abcde"), 5, 0, S(""), 0);
+    test(S("abcde"), 5, 0, S("abcde"), -5);
+    test(S("abcde"), 5, 0, S("abcdefghij"), -10);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 5, 1, S(""), 0);
+    test(S("abcde"), 5, 1, S("abcde"), -5);
+    test(S("abcde"), 5, 1, S("abcdefghij"), -10);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), -20);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("abcde"), 6, 0, S(""), 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0);
+    test(S("abcdefghij"), 0, 0, S(""), 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), -5);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), -10);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 0, 1, S(""), 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), -4);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), -9);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), -19);
+    test(S("abcdefghij"), 0, 5, S(""), 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), -15);
+    test(S("abcdefghij"), 0, 9, S(""), 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 4);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), -11);
+    test(S("abcdefghij"), 0, 10, S(""), 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghij"), 0, 11, S(""), 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghij"), 1, 0, S(""), 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), -5);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), -10);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 1, 1, S(""), 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 4, S(""), 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 8, S(""), 8);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 9, S(""), 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 10, S(""), 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 5, 0, S(""), 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), -5);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), -10);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 5, 1, S(""), 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 2, S(""), 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 4, S(""), 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 5, S(""), 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 6, S(""), 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 9, 0, S(""), 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), -5);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), -10);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 9, 1, S(""), 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 9);
+    test(S("abcdefghij"), 9, 2, S(""), 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 9);
+    test(S("abcdefghij"), 10, 0, S(""), 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), -5);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), -10);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 10, 1, S(""), 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), -5);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), -10);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 11, 0, S(""), 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.compare(0, 1, {"abc", 1}) < 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string_size_size.pass.cpp
new file mode 100644
index 0000000..68dbecb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string_size_size.pass.cpp
@@ -0,0 +1,6078 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(size_type pos1, size_type n1, const basic_string& str,
+//             size_type pos2, size_type n2=npos) const; // constexpr since C++20
+//  the "=npos" was added in C++14
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "min_allocator.h"
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s,   typename S::size_type pos1, typename S::size_type n1,
+     const S& str, typename S::size_type pos2, typename S::size_type n2, int x)
+{
+    if (pos1 <= s.size() && pos2 <= str.size())
+        assert(sign(s.compare(pos1, n1, str, pos2, n2)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, str, pos2, n2);
+            assert(false);
+        }
+        catch (const std::out_of_range&)
+        {
+            assert(pos1 > s.size() || pos2 > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test_npos(const S& s,   typename S::size_type pos1, typename S::size_type n1,
+          const S& str, typename S::size_type pos2, int x)
+{
+    if (pos1 <= s.size() && pos2 <= str.size())
+        assert(sign(s.compare(pos1, n1, str, pos2)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, str, pos2);
+            assert(false);
+        }
+        catch (const std::out_of_range&)
+        {
+            assert(pos1 > s.size() || pos2 > str.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test0()
+{
+    test(S(""), 0, 0, S(""), 0, 0, 0);
+    test(S(""), 0, 0, S(""), 0, 1, 0);
+    test(S(""), 0, 0, S(""), 1, 0, 0);
+    test(S(""), 0, 0, S("abcde"), 0, 0, 0);
+    test(S(""), 0, 0, S("abcde"), 0, 1, -1);
+    test(S(""), 0, 0, S("abcde"), 0, 2, -2);
+    test(S(""), 0, 0, S("abcde"), 0, 4, -4);
+    test(S(""), 0, 0, S("abcde"), 0, 5, -5);
+    test(S(""), 0, 0, S("abcde"), 0, 6, -5);
+    test(S(""), 0, 0, S("abcde"), 1, 0, 0);
+    test(S(""), 0, 0, S("abcde"), 1, 1, -1);
+    test(S(""), 0, 0, S("abcde"), 1, 2, -2);
+    test(S(""), 0, 0, S("abcde"), 1, 3, -3);
+    test(S(""), 0, 0, S("abcde"), 1, 4, -4);
+    test(S(""), 0, 0, S("abcde"), 1, 5, -4);
+    test(S(""), 0, 0, S("abcde"), 2, 0, 0);
+    test(S(""), 0, 0, S("abcde"), 2, 1, -1);
+    test(S(""), 0, 0, S("abcde"), 2, 2, -2);
+    test(S(""), 0, 0, S("abcde"), 2, 3, -3);
+    test(S(""), 0, 0, S("abcde"), 2, 4, -3);
+    test(S(""), 0, 0, S("abcde"), 4, 0, 0);
+    test(S(""), 0, 0, S("abcde"), 4, 1, -1);
+    test(S(""), 0, 0, S("abcde"), 4, 2, -1);
+    test(S(""), 0, 0, S("abcde"), 5, 0, 0);
+    test(S(""), 0, 0, S("abcde"), 5, 1, 0);
+    test(S(""), 0, 0, S("abcde"), 6, 0, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 0, 0, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 0, 1, -1);
+    test(S(""), 0, 0, S("abcdefghij"), 0, 5, -5);
+    test(S(""), 0, 0, S("abcdefghij"), 0, 9, -9);
+    test(S(""), 0, 0, S("abcdefghij"), 0, 10, -10);
+    test(S(""), 0, 0, S("abcdefghij"), 0, 11, -10);
+    test(S(""), 0, 0, S("abcdefghij"), 1, 0, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 1, 1, -1);
+    test(S(""), 0, 0, S("abcdefghij"), 1, 4, -4);
+    test(S(""), 0, 0, S("abcdefghij"), 1, 8, -8);
+    test(S(""), 0, 0, S("abcdefghij"), 1, 9, -9);
+    test(S(""), 0, 0, S("abcdefghij"), 1, 10, -9);
+    test(S(""), 0, 0, S("abcdefghij"), 5, 0, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 5, 1, -1);
+    test(S(""), 0, 0, S("abcdefghij"), 5, 2, -2);
+    test(S(""), 0, 0, S("abcdefghij"), 5, 4, -4);
+    test(S(""), 0, 0, S("abcdefghij"), 5, 5, -5);
+    test(S(""), 0, 0, S("abcdefghij"), 5, 6, -5);
+    test(S(""), 0, 0, S("abcdefghij"), 9, 0, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 9, 1, -1);
+    test(S(""), 0, 0, S("abcdefghij"), 9, 2, -1);
+    test(S(""), 0, 0, S("abcdefghij"), 10, 0, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 10, 1, 0);
+    test(S(""), 0, 0, S("abcdefghij"), 11, 0, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S(""), 0, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S(""), 0, 1, S(""), 0, 0, 0);
+    test(S(""), 0, 1, S(""), 0, 1, 0);
+    test(S(""), 0, 1, S(""), 1, 0, 0);
+    test(S(""), 0, 1, S("abcde"), 0, 0, 0);
+    test(S(""), 0, 1, S("abcde"), 0, 1, -1);
+    test(S(""), 0, 1, S("abcde"), 0, 2, -2);
+    test(S(""), 0, 1, S("abcde"), 0, 4, -4);
+    test(S(""), 0, 1, S("abcde"), 0, 5, -5);
+    test(S(""), 0, 1, S("abcde"), 0, 6, -5);
+    test(S(""), 0, 1, S("abcde"), 1, 0, 0);
+    test(S(""), 0, 1, S("abcde"), 1, 1, -1);
+    test(S(""), 0, 1, S("abcde"), 1, 2, -2);
+    test(S(""), 0, 1, S("abcde"), 1, 3, -3);
+    test(S(""), 0, 1, S("abcde"), 1, 4, -4);
+    test(S(""), 0, 1, S("abcde"), 1, 5, -4);
+    test(S(""), 0, 1, S("abcde"), 2, 0, 0);
+    test(S(""), 0, 1, S("abcde"), 2, 1, -1);
+    test(S(""), 0, 1, S("abcde"), 2, 2, -2);
+    test(S(""), 0, 1, S("abcde"), 2, 3, -3);
+    test(S(""), 0, 1, S("abcde"), 2, 4, -3);
+    test(S(""), 0, 1, S("abcde"), 4, 0, 0);
+    test(S(""), 0, 1, S("abcde"), 4, 1, -1);
+    test(S(""), 0, 1, S("abcde"), 4, 2, -1);
+    test(S(""), 0, 1, S("abcde"), 5, 0, 0);
+    test(S(""), 0, 1, S("abcde"), 5, 1, 0);
+    test(S(""), 0, 1, S("abcde"), 6, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test1()
+{
+    test(S(""), 0, 1, S("abcdefghij"), 0, 0, 0);
+    test(S(""), 0, 1, S("abcdefghij"), 0, 1, -1);
+    test(S(""), 0, 1, S("abcdefghij"), 0, 5, -5);
+    test(S(""), 0, 1, S("abcdefghij"), 0, 9, -9);
+    test(S(""), 0, 1, S("abcdefghij"), 0, 10, -10);
+    test(S(""), 0, 1, S("abcdefghij"), 0, 11, -10);
+    test(S(""), 0, 1, S("abcdefghij"), 1, 0, 0);
+    test(S(""), 0, 1, S("abcdefghij"), 1, 1, -1);
+    test(S(""), 0, 1, S("abcdefghij"), 1, 4, -4);
+    test(S(""), 0, 1, S("abcdefghij"), 1, 8, -8);
+    test(S(""), 0, 1, S("abcdefghij"), 1, 9, -9);
+    test(S(""), 0, 1, S("abcdefghij"), 1, 10, -9);
+    test(S(""), 0, 1, S("abcdefghij"), 5, 0, 0);
+    test(S(""), 0, 1, S("abcdefghij"), 5, 1, -1);
+    test(S(""), 0, 1, S("abcdefghij"), 5, 2, -2);
+    test(S(""), 0, 1, S("abcdefghij"), 5, 4, -4);
+    test(S(""), 0, 1, S("abcdefghij"), 5, 5, -5);
+    test(S(""), 0, 1, S("abcdefghij"), 5, 6, -5);
+    test(S(""), 0, 1, S("abcdefghij"), 9, 0, 0);
+    test(S(""), 0, 1, S("abcdefghij"), 9, 1, -1);
+    test(S(""), 0, 1, S("abcdefghij"), 9, 2, -1);
+    test(S(""), 0, 1, S("abcdefghij"), 10, 0, 0);
+    test(S(""), 0, 1, S("abcdefghij"), 10, 1, 0);
+    test(S(""), 0, 1, S("abcdefghij"), 11, 0, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S(""), 0, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S(""), 1, 0, S(""), 0, 0, 0);
+    test(S(""), 1, 0, S(""), 0, 1, 0);
+    test(S(""), 1, 0, S(""), 1, 0, 0);
+    test(S(""), 1, 0, S("abcde"), 0, 0, 0);
+    test(S(""), 1, 0, S("abcde"), 0, 1, 0);
+    test(S(""), 1, 0, S("abcde"), 0, 2, 0);
+    test(S(""), 1, 0, S("abcde"), 0, 4, 0);
+    test(S(""), 1, 0, S("abcde"), 0, 5, 0);
+    test(S(""), 1, 0, S("abcde"), 0, 6, 0);
+    test(S(""), 1, 0, S("abcde"), 1, 0, 0);
+    test(S(""), 1, 0, S("abcde"), 1, 1, 0);
+    test(S(""), 1, 0, S("abcde"), 1, 2, 0);
+    test(S(""), 1, 0, S("abcde"), 1, 3, 0);
+    test(S(""), 1, 0, S("abcde"), 1, 4, 0);
+    test(S(""), 1, 0, S("abcde"), 1, 5, 0);
+    test(S(""), 1, 0, S("abcde"), 2, 0, 0);
+    test(S(""), 1, 0, S("abcde"), 2, 1, 0);
+    test(S(""), 1, 0, S("abcde"), 2, 2, 0);
+    test(S(""), 1, 0, S("abcde"), 2, 3, 0);
+    test(S(""), 1, 0, S("abcde"), 2, 4, 0);
+    test(S(""), 1, 0, S("abcde"), 4, 0, 0);
+    test(S(""), 1, 0, S("abcde"), 4, 1, 0);
+    test(S(""), 1, 0, S("abcde"), 4, 2, 0);
+    test(S(""), 1, 0, S("abcde"), 5, 0, 0);
+    test(S(""), 1, 0, S("abcde"), 5, 1, 0);
+    test(S(""), 1, 0, S("abcde"), 6, 0, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0, 0, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0, 1, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0, 5, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0, 9, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0, 10, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 0, 11, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 1, 0, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 1, 1, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 1, 4, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 1, 8, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 1, 9, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 1, 10, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 5, 0, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 5, 1, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 5, 2, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 5, 4, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 5, 5, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 5, 6, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 9, 0, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 9, 1, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 9, 2, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 10, 0, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 10, 1, 0);
+    test(S(""), 1, 0, S("abcdefghij"), 11, 0, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0, 1, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test2()
+{
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S(""), 1, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 0, S(""), 0, 0, 0);
+    test(S("abcde"), 0, 0, S(""), 0, 1, 0);
+    test(S("abcde"), 0, 0, S(""), 1, 0, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 0, 1, -1);
+    test(S("abcde"), 0, 0, S("abcde"), 0, 2, -2);
+    test(S("abcde"), 0, 0, S("abcde"), 0, 4, -4);
+    test(S("abcde"), 0, 0, S("abcde"), 0, 5, -5);
+    test(S("abcde"), 0, 0, S("abcde"), 0, 6, -5);
+    test(S("abcde"), 0, 0, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 0, S("abcde"), 1, 2, -2);
+    test(S("abcde"), 0, 0, S("abcde"), 1, 3, -3);
+    test(S("abcde"), 0, 0, S("abcde"), 1, 4, -4);
+    test(S("abcde"), 0, 0, S("abcde"), 1, 5, -4);
+    test(S("abcde"), 0, 0, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 0, 0, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 0, S("abcde"), 2, 3, -3);
+    test(S("abcde"), 0, 0, S("abcde"), 2, 4, -3);
+    test(S("abcde"), 0, 0, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 4, 1, -1);
+    test(S("abcde"), 0, 0, S("abcde"), 4, 2, -1);
+    test(S("abcde"), 0, 0, S("abcde"), 5, 0, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 0, 0, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 0, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 0, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 1, S(""), 0, 0, 1);
+    test(S("abcde"), 0, 1, S(""), 0, 1, 1);
+    test(S("abcde"), 0, 1, S(""), 1, 0, 0);
+    test(S("abcde"), 0, 1, S("abcde"), 0, 0, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test3()
+{
+    test(S("abcde"), 0, 1, S("abcde"), 0, 1, 0);
+    test(S("abcde"), 0, 1, S("abcde"), 0, 2, -1);
+    test(S("abcde"), 0, 1, S("abcde"), 0, 4, -3);
+    test(S("abcde"), 0, 1, S("abcde"), 0, 5, -4);
+    test(S("abcde"), 0, 1, S("abcde"), 0, 6, -4);
+    test(S("abcde"), 0, 1, S("abcde"), 1, 0, 1);
+    test(S("abcde"), 0, 1, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 1, S("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 1, S("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 1, S("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 1, S("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 1, S("abcde"), 2, 0, 1);
+    test(S("abcde"), 0, 1, S("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 1, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 1, S("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 1, S("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 1, S("abcde"), 4, 0, 1);
+    test(S("abcde"), 0, 1, S("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 1, S("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 1, S("abcde"), 5, 0, 1);
+    test(S("abcde"), 0, 1, S("abcde"), 5, 1, 1);
+    test(S("abcde"), 0, 1, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 0, 1, 0);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 0, 5, -4);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 0, 9, -8);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 0, 10, -9);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 0, 11, -9);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 0, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 0, 10, -9);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 0, 19, -18);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 0, 20, -19);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 0, 21, -19);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 0, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 2, S(""), 0, 0, 2);
+    test(S("abcde"), 0, 2, S(""), 0, 1, 2);
+    test(S("abcde"), 0, 2, S(""), 1, 0, 0);
+    test(S("abcde"), 0, 2, S("abcde"), 0, 0, 2);
+    test(S("abcde"), 0, 2, S("abcde"), 0, 1, 1);
+    test(S("abcde"), 0, 2, S("abcde"), 0, 2, 0);
+    test(S("abcde"), 0, 2, S("abcde"), 0, 4, -2);
+    test(S("abcde"), 0, 2, S("abcde"), 0, 5, -3);
+    test(S("abcde"), 0, 2, S("abcde"), 0, 6, -3);
+    test(S("abcde"), 0, 2, S("abcde"), 1, 0, 2);
+    test(S("abcde"), 0, 2, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 2, S("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 2, S("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 2, S("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 2, S("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 2, S("abcde"), 2, 0, 2);
+    test(S("abcde"), 0, 2, S("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 2, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 2, S("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 2, S("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 2, S("abcde"), 4, 0, 2);
+    test(S("abcde"), 0, 2, S("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 2, S("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 2, S("abcde"), 5, 0, 2);
+    test(S("abcde"), 0, 2, S("abcde"), 5, 1, 2);
+    test(S("abcde"), 0, 2, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 0, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 0, 5, -3);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 0, 9, -7);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test4()
+{
+    test(S("abcde"), 0, 2, S("abcdefghij"), 0, 10, -8);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 0, 11, -8);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 1, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 5, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 9, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 10, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 10, 1, 2);
+    test(S("abcde"), 0, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 0, 10, -8);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 0, 19, -17);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 0, 20, -18);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 0, 21, -18);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcde"), 0, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 4, S(""), 0, 0, 4);
+    test(S("abcde"), 0, 4, S(""), 0, 1, 4);
+    test(S("abcde"), 0, 4, S(""), 1, 0, 0);
+    test(S("abcde"), 0, 4, S("abcde"), 0, 0, 4);
+    test(S("abcde"), 0, 4, S("abcde"), 0, 1, 3);
+    test(S("abcde"), 0, 4, S("abcde"), 0, 2, 2);
+    test(S("abcde"), 0, 4, S("abcde"), 0, 4, 0);
+    test(S("abcde"), 0, 4, S("abcde"), 0, 5, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 0, 6, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 1, 0, 4);
+    test(S("abcde"), 0, 4, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 4, S("abcde"), 2, 0, 4);
+    test(S("abcde"), 0, 4, S("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 4, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 4, S("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 4, S("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 4, S("abcde"), 4, 0, 4);
+    test(S("abcde"), 0, 4, S("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 4, S("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 4, S("abcde"), 5, 0, 4);
+    test(S("abcde"), 0, 4, S("abcde"), 5, 1, 4);
+    test(S("abcde"), 0, 4, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 0, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 0, 1, 3);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 0, 5, -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 0, 9, -5);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 0, 10, -6);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 0, 11, -6);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 1, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 5, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 9, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 10, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 10, 1, 4);
+    test(S("abcde"), 0, 4, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 0, 1, 3);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 0, 10, -6);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 0, 19, -15);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 0, 20, -16);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 0, 21, -16);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test5()
+{
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcde"), 0, 4, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 5, S(""), 0, 0, 5);
+    test(S("abcde"), 0, 5, S(""), 0, 1, 5);
+    test(S("abcde"), 0, 5, S(""), 1, 0, 0);
+    test(S("abcde"), 0, 5, S("abcde"), 0, 0, 5);
+    test(S("abcde"), 0, 5, S("abcde"), 0, 1, 4);
+    test(S("abcde"), 0, 5, S("abcde"), 0, 2, 3);
+    test(S("abcde"), 0, 5, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 0, 5, S("abcde"), 0, 5, 0);
+    test(S("abcde"), 0, 5, S("abcde"), 0, 6, 0);
+    test(S("abcde"), 0, 5, S("abcde"), 1, 0, 5);
+    test(S("abcde"), 0, 5, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 5, S("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 5, S("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 5, S("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 5, S("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 5, S("abcde"), 2, 0, 5);
+    test(S("abcde"), 0, 5, S("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 5, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 5, S("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 5, S("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 5, S("abcde"), 4, 0, 5);
+    test(S("abcde"), 0, 5, S("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 5, S("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 5, S("abcde"), 5, 0, 5);
+    test(S("abcde"), 0, 5, S("abcde"), 5, 1, 5);
+    test(S("abcde"), 0, 5, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 0, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 0, 5, 0);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 0, 9, -4);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 0, 10, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 0, 11, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 1, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 5, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 9, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 10, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 10, 1, 5);
+    test(S("abcde"), 0, 5, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 0, 10, -5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 0, 19, -14);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 0, 20, -15);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 0, 21, -15);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcde"), 0, 5, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 0, 6, S(""), 0, 0, 5);
+    test(S("abcde"), 0, 6, S(""), 0, 1, 5);
+    test(S("abcde"), 0, 6, S(""), 1, 0, 0);
+    test(S("abcde"), 0, 6, S("abcde"), 0, 0, 5);
+    test(S("abcde"), 0, 6, S("abcde"), 0, 1, 4);
+    test(S("abcde"), 0, 6, S("abcde"), 0, 2, 3);
+    test(S("abcde"), 0, 6, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 0, 6, S("abcde"), 0, 5, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test6()
+{
+    test(S("abcde"), 0, 6, S("abcde"), 0, 6, 0);
+    test(S("abcde"), 0, 6, S("abcde"), 1, 0, 5);
+    test(S("abcde"), 0, 6, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 0, 6, S("abcde"), 1, 2, -1);
+    test(S("abcde"), 0, 6, S("abcde"), 1, 3, -1);
+    test(S("abcde"), 0, 6, S("abcde"), 1, 4, -1);
+    test(S("abcde"), 0, 6, S("abcde"), 1, 5, -1);
+    test(S("abcde"), 0, 6, S("abcde"), 2, 0, 5);
+    test(S("abcde"), 0, 6, S("abcde"), 2, 1, -2);
+    test(S("abcde"), 0, 6, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 0, 6, S("abcde"), 2, 3, -2);
+    test(S("abcde"), 0, 6, S("abcde"), 2, 4, -2);
+    test(S("abcde"), 0, 6, S("abcde"), 4, 0, 5);
+    test(S("abcde"), 0, 6, S("abcde"), 4, 1, -4);
+    test(S("abcde"), 0, 6, S("abcde"), 4, 2, -4);
+    test(S("abcde"), 0, 6, S("abcde"), 5, 0, 5);
+    test(S("abcde"), 0, 6, S("abcde"), 5, 1, 5);
+    test(S("abcde"), 0, 6, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 0, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 0, 5, 0);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 0, 9, -4);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 0, 10, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 0, 11, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 1, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 1, 8, -1);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 1, 9, -1);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 1, 10, -1);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 5, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 5, 1, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 5, 2, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 5, 4, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 9, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 9, 1, -9);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 9, 2, -9);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 10, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 10, 1, 5);
+    test(S("abcde"), 0, 6, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 0, 10, -5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 0, 19, -14);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 0, 20, -15);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 0, 21, -15);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcde"), 0, 6, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 0, S(""), 0, 0, 0);
+    test(S("abcde"), 1, 0, S(""), 0, 1, 0);
+    test(S("abcde"), 1, 0, S(""), 1, 0, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 0, 1, -1);
+    test(S("abcde"), 1, 0, S("abcde"), 0, 2, -2);
+    test(S("abcde"), 1, 0, S("abcde"), 0, 4, -4);
+    test(S("abcde"), 1, 0, S("abcde"), 0, 5, -5);
+    test(S("abcde"), 1, 0, S("abcde"), 0, 6, -5);
+    test(S("abcde"), 1, 0, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 1, 0, S("abcde"), 1, 2, -2);
+    test(S("abcde"), 1, 0, S("abcde"), 1, 3, -3);
+    test(S("abcde"), 1, 0, S("abcde"), 1, 4, -4);
+    test(S("abcde"), 1, 0, S("abcde"), 1, 5, -4);
+    test(S("abcde"), 1, 0, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 0, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 1, 0, S("abcde"), 2, 3, -3);
+    test(S("abcde"), 1, 0, S("abcde"), 2, 4, -3);
+    test(S("abcde"), 1, 0, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 4, 1, -1);
+    test(S("abcde"), 1, 0, S("abcde"), 4, 2, -1);
+    test(S("abcde"), 1, 0, S("abcde"), 5, 0, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 1, 0, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 1, 1, -1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test7()
+{
+    test(S("abcde"), 1, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 1, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 1, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 1, S(""), 0, 0, 1);
+    test(S("abcde"), 1, 1, S(""), 0, 1, 1);
+    test(S("abcde"), 1, 1, S(""), 1, 0, 0);
+    test(S("abcde"), 1, 1, S("abcde"), 0, 0, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 1, 0, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 1, 1, 0);
+    test(S("abcde"), 1, 1, S("abcde"), 1, 2, -1);
+    test(S("abcde"), 1, 1, S("abcde"), 1, 3, -2);
+    test(S("abcde"), 1, 1, S("abcde"), 1, 4, -3);
+    test(S("abcde"), 1, 1, S("abcde"), 1, 5, -3);
+    test(S("abcde"), 1, 1, S("abcde"), 2, 0, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 1, S("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 1, S("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 1, S("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 1, S("abcde"), 4, 0, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 1, S("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 1, S("abcde"), 5, 0, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 5, 1, 1);
+    test(S("abcde"), 1, 1, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1, 1, 0);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1, 4, -3);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1, 8, -7);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1, 9, -8);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 1, 10, -8);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 1, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1, 9, -8);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1, 18, -17);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test8()
+{
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1, 19, -18);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 1, 20, -18);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 1, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 2, S(""), 0, 0, 2);
+    test(S("abcde"), 1, 2, S(""), 0, 1, 2);
+    test(S("abcde"), 1, 2, S(""), 1, 0, 0);
+    test(S("abcde"), 1, 2, S("abcde"), 0, 0, 2);
+    test(S("abcde"), 1, 2, S("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 2, S("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 2, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 2, S("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 2, S("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 2, S("abcde"), 1, 0, 2);
+    test(S("abcde"), 1, 2, S("abcde"), 1, 1, 1);
+    test(S("abcde"), 1, 2, S("abcde"), 1, 2, 0);
+    test(S("abcde"), 1, 2, S("abcde"), 1, 3, -1);
+    test(S("abcde"), 1, 2, S("abcde"), 1, 4, -2);
+    test(S("abcde"), 1, 2, S("abcde"), 1, 5, -2);
+    test(S("abcde"), 1, 2, S("abcde"), 2, 0, 2);
+    test(S("abcde"), 1, 2, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 2, S("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 2, S("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 2, S("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 2, S("abcde"), 4, 0, 2);
+    test(S("abcde"), 1, 2, S("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 2, S("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 2, S("abcde"), 5, 0, 2);
+    test(S("abcde"), 1, 2, S("abcde"), 5, 1, 2);
+    test(S("abcde"), 1, 2, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 0, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1, 4, -2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1, 8, -6);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1, 9, -7);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 1, 10, -7);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 5, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 9, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 10, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 10, 1, 2);
+    test(S("abcde"), 1, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1, 9, -7);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1, 18, -16);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1, 19, -17);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 1, 20, -17);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcde"), 1, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 3, S(""), 0, 0, 3);
+    test(S("abcde"), 1, 3, S(""), 0, 1, 3);
+    test(S("abcde"), 1, 3, S(""), 1, 0, 0);
+    test(S("abcde"), 1, 3, S("abcde"), 0, 0, 3);
+    test(S("abcde"), 1, 3, S("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 3, S("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 3, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 3, S("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 3, S("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 3, S("abcde"), 1, 0, 3);
+    test(S("abcde"), 1, 3, S("abcde"), 1, 1, 2);
+    test(S("abcde"), 1, 3, S("abcde"), 1, 2, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test9()
+{
+    test(S("abcde"), 1, 3, S("abcde"), 1, 3, 0);
+    test(S("abcde"), 1, 3, S("abcde"), 1, 4, -1);
+    test(S("abcde"), 1, 3, S("abcde"), 1, 5, -1);
+    test(S("abcde"), 1, 3, S("abcde"), 2, 0, 3);
+    test(S("abcde"), 1, 3, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 3, S("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 3, S("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 3, S("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 3, S("abcde"), 4, 0, 3);
+    test(S("abcde"), 1, 3, S("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 3, S("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 3, S("abcde"), 5, 0, 3);
+    test(S("abcde"), 1, 3, S("abcde"), 5, 1, 3);
+    test(S("abcde"), 1, 3, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 0, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1, 1, 2);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1, 4, -1);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1, 8, -5);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1, 9, -6);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 1, 10, -6);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 5, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 9, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 10, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 10, 1, 3);
+    test(S("abcde"), 1, 3, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 0, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1, 1, 2);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1, 9, -6);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1, 18, -15);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1, 19, -16);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 1, 20, -16);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 10, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 19, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 20, 0, 3);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 20, 1, 3);
+    test(S("abcde"), 1, 3, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 4, S(""), 0, 0, 4);
+    test(S("abcde"), 1, 4, S(""), 0, 1, 4);
+    test(S("abcde"), 1, 4, S(""), 1, 0, 0);
+    test(S("abcde"), 1, 4, S("abcde"), 0, 0, 4);
+    test(S("abcde"), 1, 4, S("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 4, S("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 4, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 4, S("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 4, S("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 4, S("abcde"), 1, 0, 4);
+    test(S("abcde"), 1, 4, S("abcde"), 1, 1, 3);
+    test(S("abcde"), 1, 4, S("abcde"), 1, 2, 2);
+    test(S("abcde"), 1, 4, S("abcde"), 1, 3, 1);
+    test(S("abcde"), 1, 4, S("abcde"), 1, 4, 0);
+    test(S("abcde"), 1, 4, S("abcde"), 1, 5, 0);
+    test(S("abcde"), 1, 4, S("abcde"), 2, 0, 4);
+    test(S("abcde"), 1, 4, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 4, S("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 4, S("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 4, S("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 4, S("abcde"), 4, 0, 4);
+    test(S("abcde"), 1, 4, S("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 4, S("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 4, S("abcde"), 5, 0, 4);
+    test(S("abcde"), 1, 4, S("abcde"), 5, 1, 4);
+    test(S("abcde"), 1, 4, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 0, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1, 4, 0);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1, 8, -4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1, 9, -5);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 1, 10, -5);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test10()
+{
+    test(S("abcde"), 1, 4, S("abcdefghij"), 5, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 9, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 10, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 10, 1, 4);
+    test(S("abcde"), 1, 4, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1, 9, -5);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1, 18, -14);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1, 19, -15);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 1, 20, -15);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcde"), 1, 4, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 1, 5, S(""), 0, 0, 4);
+    test(S("abcde"), 1, 5, S(""), 0, 1, 4);
+    test(S("abcde"), 1, 5, S(""), 1, 0, 0);
+    test(S("abcde"), 1, 5, S("abcde"), 0, 0, 4);
+    test(S("abcde"), 1, 5, S("abcde"), 0, 1, 1);
+    test(S("abcde"), 1, 5, S("abcde"), 0, 2, 1);
+    test(S("abcde"), 1, 5, S("abcde"), 0, 4, 1);
+    test(S("abcde"), 1, 5, S("abcde"), 0, 5, 1);
+    test(S("abcde"), 1, 5, S("abcde"), 0, 6, 1);
+    test(S("abcde"), 1, 5, S("abcde"), 1, 0, 4);
+    test(S("abcde"), 1, 5, S("abcde"), 1, 1, 3);
+    test(S("abcde"), 1, 5, S("abcde"), 1, 2, 2);
+    test(S("abcde"), 1, 5, S("abcde"), 1, 3, 1);
+    test(S("abcde"), 1, 5, S("abcde"), 1, 4, 0);
+    test(S("abcde"), 1, 5, S("abcde"), 1, 5, 0);
+    test(S("abcde"), 1, 5, S("abcde"), 2, 0, 4);
+    test(S("abcde"), 1, 5, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 1, 5, S("abcde"), 2, 2, -1);
+    test(S("abcde"), 1, 5, S("abcde"), 2, 3, -1);
+    test(S("abcde"), 1, 5, S("abcde"), 2, 4, -1);
+    test(S("abcde"), 1, 5, S("abcde"), 4, 0, 4);
+    test(S("abcde"), 1, 5, S("abcde"), 4, 1, -3);
+    test(S("abcde"), 1, 5, S("abcde"), 4, 2, -3);
+    test(S("abcde"), 1, 5, S("abcde"), 5, 0, 4);
+    test(S("abcde"), 1, 5, S("abcde"), 5, 1, 4);
+    test(S("abcde"), 1, 5, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 0, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 0, 1, 1);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 0, 5, 1);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 0, 9, 1);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 0, 10, 1);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 0, 11, 1);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1, 4, 0);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1, 8, -4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1, 9, -5);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 1, 10, -5);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 5, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 5, 1, -4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 5, 2, -4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 5, 5, -4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 5, 6, -4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 9, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 9, 1, -8);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 9, 2, -8);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 10, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 10, 1, 4);
+    test(S("abcde"), 1, 5, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1, 9, -5);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1, 18, -14);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1, 19, -15);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 1, 20, -15);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 10, 1, -9);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test11()
+{
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcde"), 1, 5, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 0, S(""), 0, 0, 0);
+    test(S("abcde"), 2, 0, S(""), 0, 1, 0);
+    test(S("abcde"), 2, 0, S(""), 1, 0, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 0, 1, -1);
+    test(S("abcde"), 2, 0, S("abcde"), 0, 2, -2);
+    test(S("abcde"), 2, 0, S("abcde"), 0, 4, -4);
+    test(S("abcde"), 2, 0, S("abcde"), 0, 5, -5);
+    test(S("abcde"), 2, 0, S("abcde"), 0, 6, -5);
+    test(S("abcde"), 2, 0, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 2, 0, S("abcde"), 1, 2, -2);
+    test(S("abcde"), 2, 0, S("abcde"), 1, 3, -3);
+    test(S("abcde"), 2, 0, S("abcde"), 1, 4, -4);
+    test(S("abcde"), 2, 0, S("abcde"), 1, 5, -4);
+    test(S("abcde"), 2, 0, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 2, 0, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 2, 0, S("abcde"), 2, 3, -3);
+    test(S("abcde"), 2, 0, S("abcde"), 2, 4, -3);
+    test(S("abcde"), 2, 0, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 4, 1, -1);
+    test(S("abcde"), 2, 0, S("abcde"), 4, 2, -1);
+    test(S("abcde"), 2, 0, S("abcde"), 5, 0, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 2, 0, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 2, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 2, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 1, S(""), 0, 0, 1);
+    test(S("abcde"), 2, 1, S(""), 0, 1, 1);
+    test(S("abcde"), 2, 1, S(""), 1, 0, 0);
+    test(S("abcde"), 2, 1, S("abcde"), 0, 0, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 1, S("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 1, S("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 1, S("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 1, S("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 1, S("abcde"), 1, 0, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 2, 0, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test12()
+{
+    test(S("abcde"), 2, 1, S("abcde"), 2, 1, 0);
+    test(S("abcde"), 2, 1, S("abcde"), 2, 2, -1);
+    test(S("abcde"), 2, 1, S("abcde"), 2, 3, -2);
+    test(S("abcde"), 2, 1, S("abcde"), 2, 4, -2);
+    test(S("abcde"), 2, 1, S("abcde"), 4, 0, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 1, S("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 1, S("abcde"), 5, 0, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 5, 1, 1);
+    test(S("abcde"), 2, 1, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 5, 4, -3);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 2, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 10, 11, -8);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 2, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 2, S(""), 0, 0, 2);
+    test(S("abcde"), 2, 2, S(""), 0, 1, 2);
+    test(S("abcde"), 2, 2, S(""), 1, 0, 0);
+    test(S("abcde"), 2, 2, S("abcde"), 0, 0, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 1, 0, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 2, S("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 2, S("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 2, S("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 2, S("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 2, S("abcde"), 2, 0, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 2, 1, 1);
+    test(S("abcde"), 2, 2, S("abcde"), 2, 2, 0);
+    test(S("abcde"), 2, 2, S("abcde"), 2, 3, -1);
+    test(S("abcde"), 2, 2, S("abcde"), 2, 4, -1);
+    test(S("abcde"), 2, 2, S("abcde"), 4, 0, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 2, S("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 2, S("abcde"), 5, 0, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 5, 1, 2);
+    test(S("abcde"), 2, 2, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 0, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 1, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 5, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 5, 4, -3);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test13()
+{
+    test(S("abcde"), 2, 2, S("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 9, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 10, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 10, 1, 2);
+    test(S("abcde"), 2, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 10, 11, -8);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcde"), 2, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 3, S(""), 0, 0, 3);
+    test(S("abcde"), 2, 3, S(""), 0, 1, 3);
+    test(S("abcde"), 2, 3, S(""), 1, 0, 0);
+    test(S("abcde"), 2, 3, S("abcde"), 0, 0, 3);
+    test(S("abcde"), 2, 3, S("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 3, S("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 3, S("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 3, S("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 3, S("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 3, S("abcde"), 1, 0, 3);
+    test(S("abcde"), 2, 3, S("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 3, S("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 3, S("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 3, S("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 3, S("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 3, S("abcde"), 2, 0, 3);
+    test(S("abcde"), 2, 3, S("abcde"), 2, 1, 2);
+    test(S("abcde"), 2, 3, S("abcde"), 2, 2, 1);
+    test(S("abcde"), 2, 3, S("abcde"), 2, 3, 0);
+    test(S("abcde"), 2, 3, S("abcde"), 2, 4, 0);
+    test(S("abcde"), 2, 3, S("abcde"), 4, 0, 3);
+    test(S("abcde"), 2, 3, S("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 3, S("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 3, S("abcde"), 5, 0, 3);
+    test(S("abcde"), 2, 3, S("abcde"), 5, 1, 3);
+    test(S("abcde"), 2, 3, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 0, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 1, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 5, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 5, 4, -3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 9, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 10, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 10, 1, 3);
+    test(S("abcde"), 2, 3, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 0, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 1, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 10, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 10, 11, -8);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test14()
+{
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 19, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 20, 0, 3);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 20, 1, 3);
+    test(S("abcde"), 2, 3, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 2, 4, S(""), 0, 0, 3);
+    test(S("abcde"), 2, 4, S(""), 0, 1, 3);
+    test(S("abcde"), 2, 4, S(""), 1, 0, 0);
+    test(S("abcde"), 2, 4, S("abcde"), 0, 0, 3);
+    test(S("abcde"), 2, 4, S("abcde"), 0, 1, 2);
+    test(S("abcde"), 2, 4, S("abcde"), 0, 2, 2);
+    test(S("abcde"), 2, 4, S("abcde"), 0, 4, 2);
+    test(S("abcde"), 2, 4, S("abcde"), 0, 5, 2);
+    test(S("abcde"), 2, 4, S("abcde"), 0, 6, 2);
+    test(S("abcde"), 2, 4, S("abcde"), 1, 0, 3);
+    test(S("abcde"), 2, 4, S("abcde"), 1, 1, 1);
+    test(S("abcde"), 2, 4, S("abcde"), 1, 2, 1);
+    test(S("abcde"), 2, 4, S("abcde"), 1, 3, 1);
+    test(S("abcde"), 2, 4, S("abcde"), 1, 4, 1);
+    test(S("abcde"), 2, 4, S("abcde"), 1, 5, 1);
+    test(S("abcde"), 2, 4, S("abcde"), 2, 0, 3);
+    test(S("abcde"), 2, 4, S("abcde"), 2, 1, 2);
+    test(S("abcde"), 2, 4, S("abcde"), 2, 2, 1);
+    test(S("abcde"), 2, 4, S("abcde"), 2, 3, 0);
+    test(S("abcde"), 2, 4, S("abcde"), 2, 4, 0);
+    test(S("abcde"), 2, 4, S("abcde"), 4, 0, 3);
+    test(S("abcde"), 2, 4, S("abcde"), 4, 1, -2);
+    test(S("abcde"), 2, 4, S("abcde"), 4, 2, -2);
+    test(S("abcde"), 2, 4, S("abcde"), 5, 0, 3);
+    test(S("abcde"), 2, 4, S("abcde"), 5, 1, 3);
+    test(S("abcde"), 2, 4, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 0, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 0, 1, 2);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 0, 5, 2);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 0, 9, 2);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 0, 10, 2);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 0, 11, 2);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 1, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 1, 1, 1);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 1, 4, 1);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 1, 8, 1);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 1, 9, 1);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 1, 10, 1);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 5, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 5, 1, -3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 5, 2, -3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 5, 4, -3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 5, 5, -3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 5, 6, -3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 9, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 9, 1, -7);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 9, 2, -7);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 10, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 10, 1, 3);
+    test(S("abcde"), 2, 4, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 0, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 0, 1, 2);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 0, 10, 2);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 0, 19, 2);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 0, 20, 2);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 0, 21, 2);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 1, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 1, 1, 1);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 1, 9, 1);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 1, 19, 1);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 1, 20, 1);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 10, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 10, 1, -8);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 10, 5, -8);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 10, 10, -8);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 10, 11, -8);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 19, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 19, 1, -17);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 19, 2, -17);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 20, 0, 3);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 20, 1, 3);
+    test(S("abcde"), 2, 4, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 4, 0, S(""), 0, 0, 0);
+    test(S("abcde"), 4, 0, S(""), 0, 1, 0);
+    test(S("abcde"), 4, 0, S(""), 1, 0, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 0, 1, -1);
+    test(S("abcde"), 4, 0, S("abcde"), 0, 2, -2);
+    test(S("abcde"), 4, 0, S("abcde"), 0, 4, -4);
+    test(S("abcde"), 4, 0, S("abcde"), 0, 5, -5);
+    test(S("abcde"), 4, 0, S("abcde"), 0, 6, -5);
+    test(S("abcde"), 4, 0, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 4, 0, S("abcde"), 1, 2, -2);
+    test(S("abcde"), 4, 0, S("abcde"), 1, 3, -3);
+    test(S("abcde"), 4, 0, S("abcde"), 1, 4, -4);
+    test(S("abcde"), 4, 0, S("abcde"), 1, 5, -4);
+    test(S("abcde"), 4, 0, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 4, 0, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 4, 0, S("abcde"), 2, 3, -3);
+    test(S("abcde"), 4, 0, S("abcde"), 2, 4, -3);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test15()
+{
+    test(S("abcde"), 4, 0, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 4, 1, -1);
+    test(S("abcde"), 4, 0, S("abcde"), 4, 2, -1);
+    test(S("abcde"), 4, 0, S("abcde"), 5, 0, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 4, 0, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 4, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 4, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 4, 1, S(""), 0, 0, 1);
+    test(S("abcde"), 4, 1, S(""), 0, 1, 1);
+    test(S("abcde"), 4, 1, S(""), 1, 0, 0);
+    test(S("abcde"), 4, 1, S("abcde"), 0, 0, 1);
+    test(S("abcde"), 4, 1, S("abcde"), 0, 1, 4);
+    test(S("abcde"), 4, 1, S("abcde"), 0, 2, 4);
+    test(S("abcde"), 4, 1, S("abcde"), 0, 4, 4);
+    test(S("abcde"), 4, 1, S("abcde"), 0, 5, 4);
+    test(S("abcde"), 4, 1, S("abcde"), 0, 6, 4);
+    test(S("abcde"), 4, 1, S("abcde"), 1, 0, 1);
+    test(S("abcde"), 4, 1, S("abcde"), 1, 1, 3);
+    test(S("abcde"), 4, 1, S("abcde"), 1, 2, 3);
+    test(S("abcde"), 4, 1, S("abcde"), 1, 3, 3);
+    test(S("abcde"), 4, 1, S("abcde"), 1, 4, 3);
+    test(S("abcde"), 4, 1, S("abcde"), 1, 5, 3);
+    test(S("abcde"), 4, 1, S("abcde"), 2, 0, 1);
+    test(S("abcde"), 4, 1, S("abcde"), 2, 1, 2);
+    test(S("abcde"), 4, 1, S("abcde"), 2, 2, 2);
+    test(S("abcde"), 4, 1, S("abcde"), 2, 3, 2);
+    test(S("abcde"), 4, 1, S("abcde"), 2, 4, 2);
+    test(S("abcde"), 4, 1, S("abcde"), 4, 0, 1);
+    test(S("abcde"), 4, 1, S("abcde"), 4, 1, 0);
+    test(S("abcde"), 4, 1, S("abcde"), 4, 2, 0);
+    test(S("abcde"), 4, 1, S("abcde"), 5, 0, 1);
+    test(S("abcde"), 4, 1, S("abcde"), 5, 1, 1);
+    test(S("abcde"), 4, 1, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 0, 5, 4);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 0, 9, 4);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 0, 10, 4);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 0, 11, 4);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 1, 4, 3);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 1, 8, 3);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 1, 9, 3);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 1, 10, 3);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 5, 2, -1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 5, 4, -1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 5, 5, -1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 5, 6, -1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 9, 1, -5);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test16()
+{
+    test(S("abcde"), 4, 1, S("abcdefghij"), 9, 2, -5);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 4, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 0, 10, 4);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 0, 19, 4);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 0, 20, 4);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 0, 21, 4);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 1, 9, 3);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 1, 18, 3);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 1, 19, 3);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 1, 20, 3);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 10, 1, -6);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 10, 5, -6);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 10, 9, -6);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 10, 10, -6);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 10, 11, -6);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 19, 1, -15);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 19, 2, -15);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 4, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 4, 2, S(""), 0, 0, 1);
+    test(S("abcde"), 4, 2, S(""), 0, 1, 1);
+    test(S("abcde"), 4, 2, S(""), 1, 0, 0);
+    test(S("abcde"), 4, 2, S("abcde"), 0, 0, 1);
+    test(S("abcde"), 4, 2, S("abcde"), 0, 1, 4);
+    test(S("abcde"), 4, 2, S("abcde"), 0, 2, 4);
+    test(S("abcde"), 4, 2, S("abcde"), 0, 4, 4);
+    test(S("abcde"), 4, 2, S("abcde"), 0, 5, 4);
+    test(S("abcde"), 4, 2, S("abcde"), 0, 6, 4);
+    test(S("abcde"), 4, 2, S("abcde"), 1, 0, 1);
+    test(S("abcde"), 4, 2, S("abcde"), 1, 1, 3);
+    test(S("abcde"), 4, 2, S("abcde"), 1, 2, 3);
+    test(S("abcde"), 4, 2, S("abcde"), 1, 3, 3);
+    test(S("abcde"), 4, 2, S("abcde"), 1, 4, 3);
+    test(S("abcde"), 4, 2, S("abcde"), 1, 5, 3);
+    test(S("abcde"), 4, 2, S("abcde"), 2, 0, 1);
+    test(S("abcde"), 4, 2, S("abcde"), 2, 1, 2);
+    test(S("abcde"), 4, 2, S("abcde"), 2, 2, 2);
+    test(S("abcde"), 4, 2, S("abcde"), 2, 3, 2);
+    test(S("abcde"), 4, 2, S("abcde"), 2, 4, 2);
+    test(S("abcde"), 4, 2, S("abcde"), 4, 0, 1);
+    test(S("abcde"), 4, 2, S("abcde"), 4, 1, 0);
+    test(S("abcde"), 4, 2, S("abcde"), 4, 2, 0);
+    test(S("abcde"), 4, 2, S("abcde"), 5, 0, 1);
+    test(S("abcde"), 4, 2, S("abcde"), 5, 1, 1);
+    test(S("abcde"), 4, 2, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 0, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 0, 1, 4);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 0, 5, 4);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 0, 9, 4);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 0, 10, 4);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 0, 11, 4);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 1, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 1, 1, 3);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 1, 4, 3);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 1, 8, 3);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 1, 9, 3);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 1, 10, 3);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 5, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 5, 2, -1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 5, 4, -1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 5, 5, -1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 5, 6, -1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 9, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 9, 1, -5);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 9, 2, -5);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 10, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 10, 1, 1);
+    test(S("abcde"), 4, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 0, 10, 4);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 0, 19, 4);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 0, 20, 4);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 0, 21, 4);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 1, 9, 3);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 1, 18, 3);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 1, 19, 3);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 1, 20, 3);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 10, 1, -6);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 10, 5, -6);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 10, 9, -6);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 10, 10, -6);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 10, 11, -6);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 19, 1, -15);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 19, 2, -15);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 20, 0, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test17()
+{
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcde"), 4, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 5, 0, S(""), 0, 0, 0);
+    test(S("abcde"), 5, 0, S(""), 0, 1, 0);
+    test(S("abcde"), 5, 0, S(""), 1, 0, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 0, 1, -1);
+    test(S("abcde"), 5, 0, S("abcde"), 0, 2, -2);
+    test(S("abcde"), 5, 0, S("abcde"), 0, 4, -4);
+    test(S("abcde"), 5, 0, S("abcde"), 0, 5, -5);
+    test(S("abcde"), 5, 0, S("abcde"), 0, 6, -5);
+    test(S("abcde"), 5, 0, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 5, 0, S("abcde"), 1, 2, -2);
+    test(S("abcde"), 5, 0, S("abcde"), 1, 3, -3);
+    test(S("abcde"), 5, 0, S("abcde"), 1, 4, -4);
+    test(S("abcde"), 5, 0, S("abcde"), 1, 5, -4);
+    test(S("abcde"), 5, 0, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 5, 0, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 5, 0, S("abcde"), 2, 3, -3);
+    test(S("abcde"), 5, 0, S("abcde"), 2, 4, -3);
+    test(S("abcde"), 5, 0, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 4, 1, -1);
+    test(S("abcde"), 5, 0, S("abcde"), 4, 2, -1);
+    test(S("abcde"), 5, 0, S("abcde"), 5, 0, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 5, 0, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 5, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 5, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 5, 1, S(""), 0, 0, 0);
+    test(S("abcde"), 5, 1, S(""), 0, 1, 0);
+    test(S("abcde"), 5, 1, S(""), 1, 0, 0);
+    test(S("abcde"), 5, 1, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 5, 1, S("abcde"), 0, 1, -1);
+    test(S("abcde"), 5, 1, S("abcde"), 0, 2, -2);
+    test(S("abcde"), 5, 1, S("abcde"), 0, 4, -4);
+    test(S("abcde"), 5, 1, S("abcde"), 0, 5, -5);
+    test(S("abcde"), 5, 1, S("abcde"), 0, 6, -5);
+    test(S("abcde"), 5, 1, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 5, 1, S("abcde"), 1, 1, -1);
+    test(S("abcde"), 5, 1, S("abcde"), 1, 2, -2);
+    test(S("abcde"), 5, 1, S("abcde"), 1, 3, -3);
+    test(S("abcde"), 5, 1, S("abcde"), 1, 4, -4);
+    test(S("abcde"), 5, 1, S("abcde"), 1, 5, -4);
+    test(S("abcde"), 5, 1, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 5, 1, S("abcde"), 2, 1, -1);
+    test(S("abcde"), 5, 1, S("abcde"), 2, 2, -2);
+    test(S("abcde"), 5, 1, S("abcde"), 2, 3, -3);
+    test(S("abcde"), 5, 1, S("abcde"), 2, 4, -3);
+    test(S("abcde"), 5, 1, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 5, 1, S("abcde"), 4, 1, -1);
+    test(S("abcde"), 5, 1, S("abcde"), 4, 2, -1);
+    test(S("abcde"), 5, 1, S("abcde"), 5, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test18()
+{
+    test(S("abcde"), 5, 1, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 5, 1, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 0, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 0, 5, -5);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 0, 9, -9);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 0, 10, -10);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 0, 11, -10);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 1, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 1, 4, -4);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 1, 8, -8);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 1, 9, -9);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 1, 10, -9);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 5, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 5, 2, -2);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 5, 4, -4);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 5, 5, -5);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 5, 6, -5);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 9, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 9, 2, -1);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 5, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 5, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcde"), 6, 0, S(""), 0, 0, 0);
+    test(S("abcde"), 6, 0, S(""), 0, 1, 0);
+    test(S("abcde"), 6, 0, S(""), 1, 0, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0, 0, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0, 1, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0, 2, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0, 4, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0, 5, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 0, 6, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 1, 0, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 1, 1, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 1, 2, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 1, 3, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 1, 4, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 1, 5, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 2, 0, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 2, 1, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 2, 2, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 2, 3, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 2, 4, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 4, 0, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 4, 1, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 4, 2, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 5, 0, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 5, 1, 0);
+    test(S("abcde"), 6, 0, S("abcde"), 6, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0, 5, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0, 9, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0, 10, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 0, 11, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 1, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 1, 4, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 1, 8, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 1, 9, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 1, 10, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 5, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 5, 2, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 5, 4, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 5, 5, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 5, 6, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 9, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 9, 2, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghij"), 11, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test19()
+{
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcde"), 6, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 0, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 0, 0, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 0, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 0, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 1, S(""), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, S(""), 0, 1, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test20()
+{
+    test(S("abcdefghij"), 0, 1, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 0, 1, 0);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 0, 2, -1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 0, 4, -3);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 0, 5, -4);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 0, 6, -4);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 0, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 0, 5, -4);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 0, 9, -8);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 0, 10, -9);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 0, 11, -9);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 0, 10, -9);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 0, 19, -18);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 0, 20, -19);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 0, 21, -19);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 0, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 5, S(""), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, S(""), 0, 1, 5);
+    test(S("abcdefghij"), 0, 5, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0, 1, 4);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0, 2, 3);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0, 5, 0);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 0, 6, 0);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 1, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 2, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 4, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 5, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 5, 1, 5);
+    test(S("abcdefghij"), 0, 5, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 0, 1, 4);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test21()
+{
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 0, 5, 0);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 0, 9, -4);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 0, 10, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 0, 11, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 0, 1, 4);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 0, 10, -5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 0, 19, -14);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 0, 20, -15);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 0, 21, -15);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghij"), 0, 5, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 9, S(""), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, S(""), 0, 1, 9);
+    test(S("abcdefghij"), 0, 9, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 0, 1, 8);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 0, 2, 7);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 0, 5, 4);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 0, 6, 4);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 1, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 2, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 4, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 5, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 5, 1, 9);
+    test(S("abcdefghij"), 0, 9, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 0, 1, 8);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 0, 5, 4);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 0, 9, 0);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 0, 10, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 0, 11, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 0, 1, 8);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 0, 10, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 0, 19, -10);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test22()
+{
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 0, 20, -11);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 0, 21, -11);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghij"), 0, 9, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 10, S(""), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, S(""), 0, 1, 10);
+    test(S("abcdefghij"), 0, 10, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 0, 2, 8);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 0, 4, 6);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 2, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 4, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 5, 1, 10);
+    test(S("abcdefghij"), 0, 10, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 0, 19, -9);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 0, 20, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 0, 21, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghij"), 0, 10, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 0, 11, S(""), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, S(""), 0, 1, 10);
+    test(S("abcdefghij"), 0, 11, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 0, 2, 8);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test23()
+{
+    test(S("abcdefghij"), 0, 11, S("abcde"), 0, 4, 6);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 1, 3, -1);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 1, 5, -1);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 2, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 2, 1, -2);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 2, 3, -2);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 2, 4, -2);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 4, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 4, 1, -4);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 4, 2, -4);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 5, 1, 10);
+    test(S("abcdefghij"), 0, 11, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 0, 19, -9);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 0, 20, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 0, 21, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghij"), 0, 11, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 0, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 1, 0, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 1, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 0, 11, -10);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test24()
+{
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 1, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 1, S(""), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, S(""), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1, 1, 0);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1, 2, -1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1, 3, -2);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1, 4, -3);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 1, 5, -3);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 1, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1, 4, -3);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1, 8, -7);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1, 9, -8);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 1, 10, -8);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1, 1, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test25()
+{
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1, 9, -8);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1, 18, -17);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1, 19, -18);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 1, 20, -18);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 1, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 4, S(""), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, S(""), 0, 1, 4);
+    test(S("abcdefghij"), 1, 4, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1, 1, 3);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1, 2, 2);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1, 3, 1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1, 4, 0);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 1, 5, 0);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 2, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 4, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 5, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 5, 1, 4);
+    test(S("abcdefghij"), 1, 4, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1, 1, 3);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1, 4, 0);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1, 8, -4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1, 9, -5);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 1, 10, -5);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 5, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 9, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 10, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 10, 1, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1, 1, 3);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1, 9, -5);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1, 18, -14);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1, 19, -15);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 1, 20, -15);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcdefghij"), 1, 4, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 8, S(""), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, S(""), 0, 1, 8);
+    test(S("abcdefghij"), 1, 8, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1, 0, 8);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test26()
+{
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1, 1, 7);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1, 2, 6);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1, 3, 5);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 2, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 4, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 5, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 5, 1, 8);
+    test(S("abcdefghij"), 1, 8, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1, 1, 7);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1, 8, 0);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 5, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 9, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 10, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 10, 1, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 0, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1, 1, 7);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1, 18, -10);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1, 19, -11);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 1, 20, -11);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 10, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 19, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 20, 0, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 20, 1, 8);
+    test(S("abcdefghij"), 1, 8, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 9, S(""), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, S(""), 0, 1, 9);
+    test(S("abcdefghij"), 1, 9, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1, 2, 7);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1, 3, 6);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 1, 5, 5);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 2, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 4, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 5, 1, 9);
+    test(S("abcdefghij"), 1, 9, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1, 8, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test27()
+{
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1, 18, -9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1, 19, -10);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 1, 20, -10);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghij"), 1, 9, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 1, 10, S(""), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, S(""), 0, 1, 9);
+    test(S("abcdefghij"), 1, 10, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 0, 2, 1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 0, 4, 1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 0, 6, 1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1, 2, 7);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1, 3, 6);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 1, 5, 5);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 2, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 2, 2, -1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 2, 3, -1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 2, 4, -1);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 4, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 4, 1, -3);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 4, 2, -3);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 5, 1, 9);
+    test(S("abcdefghij"), 1, 10, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1, 4, 5);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1, 8, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1, 18, -9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1, 19, -10);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 1, 20, -10);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test28()
+{
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghij"), 1, 10, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 0, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 5, 0, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 5, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 5, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 1, S(""), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, S(""), 0, 1, 1);
+    test(S("abcdefghij"), 5, 1, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 1, 4, 4);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test29()
+{
+    test(S("abcdefghij"), 5, 1, S("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 5, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5, 1, 0);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5, 2, -1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5, 4, -3);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 5, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 2, S(""), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, S(""), 0, 1, 2);
+    test(S("abcdefghij"), 5, 2, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 1, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 2, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 4, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 5, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 5, 1, 2);
+    test(S("abcdefghij"), 5, 2, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 1, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5, 1, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test30()
+{
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5, 2, 0);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5, 4, -2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5, 5, -3);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 5, 6, -3);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 9, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 10, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 10, 1, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 0, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 1, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 10, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 19, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 20, 0, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 20, 1, 2);
+    test(S("abcdefghij"), 5, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 4, S(""), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, S(""), 0, 1, 4);
+    test(S("abcdefghij"), 5, 4, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 1, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 2, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 4, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 5, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 5, 1, 4);
+    test(S("abcdefghij"), 5, 4, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 1, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5, 1, 3);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5, 2, 2);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5, 4, 0);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5, 5, -1);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 5, 6, -1);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 9, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 10, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 10, 1, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 0, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 1, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 10, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 10, 9, -5);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test31()
+{
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 19, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 20, 0, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 20, 1, 4);
+    test(S("abcdefghij"), 5, 4, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 5, S(""), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, S(""), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 2, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 2, 2, 3);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 4, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 5, 1, 5);
+    test(S("abcdefghij"), 5, 5, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5, 2, 3);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5, 4, 1);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghij"), 5, 5, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 5, 6, S(""), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, S(""), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 0, 2, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 0, 4, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 0, 6, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 1, 2, 4);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 1, 3, 4);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 1, 5, 4);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 2, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 2, 1, 3);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 2, 2, 3);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test32()
+{
+    test(S("abcdefghij"), 5, 6, S("abcde"), 2, 3, 3);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 2, 4, 3);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 4, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 4, 1, 1);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 4, 2, 1);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 5, 1, 5);
+    test(S("abcdefghij"), 5, 6, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 0, 9, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 0, 11, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 1, 4, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 1, 8, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 1, 10, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5, 2, 3);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5, 4, 1);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 9, 1, -4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 9, 2, -4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 0, 1, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 0, 10, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 0, 19, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 0, 20, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 0, 21, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 1, 1, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 1, 9, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 1, 18, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 1, 19, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 1, 20, 4);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 10, 1, -5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 10, 9, -5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 19, 1, -14);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 19, 2, -14);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghij"), 5, 6, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 9, 0, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 9, 0, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 9, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 5, 6, -5);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test33()
+{
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 9, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 9, 1, S(""), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, S(""), 0, 1, 1);
+    test(S("abcdefghij"), 9, 1, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 0, 2, 9);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 0, 4, 9);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 0, 6, 9);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 1, 2, 8);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 1, 3, 8);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 1, 5, 8);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 2, 1, 7);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 2, 2, 7);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 2, 3, 7);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 2, 4, 7);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 4, 1, 5);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 4, 2, 5);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 9, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 0, 9, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 0, 11, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 1, 8, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 1, 10, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 5, 2, 4);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 5, 4, 4);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 5, 5, 4);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 5, 6, 4);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 0, 19, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 0, 20, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 0, 21, 9);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 1, 18, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 1, 19, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 1, 20, 8);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 10, 5, -1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 10, 9, -1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 10, 10, -1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 10, 11, -1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 19, 1, -10);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test34()
+{
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 19, 2, -10);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 9, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 9, 2, S(""), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, S(""), 0, 1, 1);
+    test(S("abcdefghij"), 9, 2, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 0, 2, 9);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 0, 4, 9);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 0, 6, 9);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 1, 2, 8);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 1, 3, 8);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 1, 5, 8);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 2, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 2, 1, 7);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 2, 2, 7);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 2, 3, 7);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 2, 4, 7);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 4, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 4, 1, 5);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 4, 2, 5);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 5, 1, 1);
+    test(S("abcdefghij"), 9, 2, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 0, 5, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 0, 9, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 0, 11, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 1, 4, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 1, 8, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 1, 10, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 5, 1, 4);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 5, 2, 4);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 5, 4, 4);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 5, 5, 4);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 5, 6, 4);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 0, 1, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 0, 10, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 0, 19, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 0, 20, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 0, 21, 9);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 1, 9, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 1, 18, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 1, 19, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 1, 20, 8);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 10, 5, -1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 10, 9, -1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 10, 10, -1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 10, 11, -1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 19, 1, -10);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 19, 2, -10);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghij"), 9, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 10, 0, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 10, 0, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 4, 1, -1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test35()
+{
+    test(S("abcdefghij"), 10, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 10, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 10, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 10, 1, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 10, 1, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 0, 2, -2);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 0, 4, -4);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 0, 6, -5);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 1, 2, -2);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 1, 3, -3);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 1, 5, -4);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 2, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 2, 2, -2);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 2, 3, -3);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 2, 4, -3);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 4, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 4, 2, -1);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 10, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 10, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test36()
+{
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 10, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghij"), 11, 0, S(""), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, S(""), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, S(""), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0, 4, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0, 5, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 0, 6, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 1, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 1, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 1, 3, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 1, 4, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 1, 5, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 2, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 2, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 2, 3, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 2, 4, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 4, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 4, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0, 5, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0, 9, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 1, 4, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 1, 8, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 5, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 5, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 5, 4, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghij"), 11, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test37()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 0, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 0, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 0, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 0, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcde"), 6, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test38()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 0, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 0, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 0, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 0, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 0, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 0, 19, -18);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 0, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 0, 21, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 0, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 0, 4, 6);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 0, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 0, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 2, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 4, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 5, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 0, 1, 9);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test39()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 0, 19, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 0, 20, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 0, 21, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 0, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 0, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 0, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 0, 6, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 2, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 4, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 5, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 0, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 0, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 0, 11, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 9, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 10, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 0, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 0, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 0, 21, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 19, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 20, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 20, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 0, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 0, 0, 20);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test40()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 0, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 0, 4, 16);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 0, 6, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 2, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 4, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 5, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 0, 9, 11);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 9, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 10, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 19, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 20, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 20, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 0, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 0, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 0, 4, 16);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 0, 6, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 1, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 1, 5, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 2, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 2, 1, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 2, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 2, 4, -2);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 4, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 4, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 4, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 5, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 0, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 0, 9, 11);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test41()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 1, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 1, 8, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 1, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 5, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 5, 1, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 5, 2, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 5, 4, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 9, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 9, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 9, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 10, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 1, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 1, 9, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 1, 18, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 10, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 10, 1, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 10, 5, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 10, 9, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 19, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 19, 1, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 19, 2, -19);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 20, 0, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 20, 1, 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test42()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1, 3, -2);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 1, 5, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1, 8, -7);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 1, 10, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1, 18, -17);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1, 19, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 1, 20, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 0, 5, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test43()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1, 2, 7);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1, 3, 6);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 1, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 2, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 4, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 5, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1, 8, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1, 18, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1, 19, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 1, 20, -10);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 0, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1, 2, 16);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1, 3, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 1, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 2, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 4, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 5, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 5, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1, 1, 17);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test44()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1, 8, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 5, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 9, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 10, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 10, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 0, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1, 19, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 1, 20, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 10, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 19, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 20, 0, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 20, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1, 3, 16);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 1, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 2, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 4, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 5, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1, 8, 11);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 1, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 9, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 10, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1, 18, 1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test45()
+{
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 19, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 20, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 20, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 0, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 0, 4, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 0, 6, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1, 3, 16);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 1, 5, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 2, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 2, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 2, 3, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 2, 4, -1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 4, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 4, 1, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 4, 2, -3);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 5, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 0, 5, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 0, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 0, 11, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1, 4, 15);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1, 8, 11);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 1, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 5, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 5, 1, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 5, 2, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 5, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 5, 6, -4);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 9, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 9, 1, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 9, 2, -8);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 10, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 0, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 0, 10, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 0, 19, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 0, 20, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 0, 21, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1, 18, 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 10, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 10, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 10, 5, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 19, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 19, 1, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 19, 2, -18);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 20, 0, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 20, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 1, 2, -2);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test46()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 1, 10, 9);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test47()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10, 9, -8);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 10, 11, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 0, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 1, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 2, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 4, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 5, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 1, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 5, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 9, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 10, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 10, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 0, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 1, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10, 1, 4);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test48()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10, 9, -4);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10, 10, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 10, 11, -5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 19, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 20, 0, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 20, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 0, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 2, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 4, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 5, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 5, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 9, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 0, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 1, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10, 5, 4);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10, 10, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 10, 11, -1);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 19, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 20, 0, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 20, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 2, 0, 10);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test49()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 4, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 5, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 5, 4, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 0, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 0, 4, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 0, 6, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 1, 2, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 1, 3, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 1, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 2, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 2, 1, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 2, 2, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 2, 3, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 2, 4, 8);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 4, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 4, 1, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 4, 2, 6);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 5, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 0, 5, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 0, 9, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 0, 11, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 1, 4, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 1, 8, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 1, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 5, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 5, 1, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 5, 2, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 5, 4, 5);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test50()
+{
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 5, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 5, 6, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 9, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 9, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 9, 2, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 10, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 0, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 0, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 0, 10, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 0, 19, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 0, 20, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 0, 21, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 1, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 1, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 1, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 1, 18, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 1, 19, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 1, 20, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10, 5, 5);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10, 9, 1);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 19, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 19, 1, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 19, 2, -9);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 20, 0, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 20, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test51()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 0, 2, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 0, 4, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 0, 6, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 1, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 1, 3, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 1, 5, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 2, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 2, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 2, 3, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 2, 4, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 4, 1, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 4, 2, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 0, 9, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 0, 11, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 1, 8, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 1, 10, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 5, 1, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 5, 2, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 5, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 5, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 5, 6, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 9, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 9, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 0, 19, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 0, 20, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 0, 21, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 1, 18, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 1, 19, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 1, 20, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 10, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 10, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 10, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 10, 11, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 0, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 0, 2, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 0, 4, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 0, 6, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 1, 2, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 1, 3, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 1, 5, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 2, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 2, 1, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 2, 2, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 2, 3, 17);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 2, 4, 17);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test52()
+{
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 4, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 4, 1, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 4, 2, 15);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 5, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 0, 5, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 0, 9, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 0, 11, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 1, 4, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 1, 8, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 1, 10, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 5, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 5, 1, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 5, 2, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 5, 4, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 5, 5, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 5, 6, 14);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 9, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 9, 1, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 9, 2, 10);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 10, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 0, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 0, 1, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 0, 10, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 0, 19, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 0, 20, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 0, 21, 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 1, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 1, 1, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 1, 9, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 1, 18, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 1, 19, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 1, 20, 18);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 10, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 10, 1, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 10, 5, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 10, 9, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 10, 10, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 10, 11, 9);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 19, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 20, 0, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 20, 1, 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 9, 1, -1);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test53()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 0, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 0, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 0, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 1, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 1, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 1, 5, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 2, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 2, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 2, 3, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 2, 4, -3);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 4, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 4, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 0, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 0, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 0, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 1, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 1, 8, -8);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 1, 10, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 5, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 5, 2, -2);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 5, 4, -4);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 5, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 5, 6, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 9, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 9, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 0, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 0, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 0, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 0, 20, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 0, 21, -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 1, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 1, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 1, 18, -18);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 1, 19, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 1, 20, -19);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 10, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 10, 5, -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 10, 9, -9);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 10, 10, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 10, 11, -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 19, 1, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 19, 2, -1);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 20, 0, 0);
+
+    return true;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 bool test54()
+{
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, S("abcdefghijklmnopqrst"), 21, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S(""), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 0, 6, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 1, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 1, 3, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 1, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 1, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 2, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 2, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 2, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 2, 3, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 2, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 4, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 4, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 4, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcde"), 6, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 0, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 1, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 1, 8, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 1, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 5, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 5, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 5, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 5, 4, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 5, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 5, 6, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 9, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 9, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 9, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghij"), 11, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 0, 21, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 1, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 1, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 1, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 1, 18, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 1, 19, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 1, 20, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 10, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 10, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 10, 5, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 10, 9, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 10, 10, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 10, 11, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 19, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 19, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 19, 2, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 20, 0, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 20, 1, 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, S("abcdefghijklmnopqrst"), 21, 0, 0);
+
+    return true;
+}
+
+template<class S>
+TEST_CONSTEXPR_CXX20 bool test55()
+{
+    test_npos(S(""), 0, 0, S(""), 0, 0);
+    test_npos(S(""), 0, 0, S("abcde"), 0, -5);
+    test_npos(S("abcde"), 0, 0, S("abcdefghij"), 0, -10);
+    test_npos(S("abcde"), 0, 0, S("abcdefghij"), 1, -9);
+    test_npos(S("abcde"), 0, 0, S("abcdefghij"), 5, -5);
+
+    return true;
+}
+
+template <class S>
+void test() {
+  test0<S>();
+  test1<S>();
+  test2<S>();
+  test3<S>();
+  test4<S>();
+  test5<S>();
+  test6<S>();
+  test7<S>();
+  test8<S>();
+  test9<S>();
+  test10<S>();
+  test11<S>();
+  test12<S>();
+  test13<S>();
+  test14<S>();
+  test15<S>();
+  test16<S>();
+  test17<S>();
+  test18<S>();
+  test19<S>();
+  test20<S>();
+  test21<S>();
+  test22<S>();
+  test23<S>();
+  test24<S>();
+  test25<S>();
+  test26<S>();
+  test27<S>();
+  test28<S>();
+  test29<S>();
+  test30<S>();
+  test31<S>();
+  test32<S>();
+  test33<S>();
+  test34<S>();
+  test35<S>();
+  test36<S>();
+  test37<S>();
+  test38<S>();
+  test39<S>();
+  test40<S>();
+  test41<S>();
+  test42<S>();
+  test43<S>();
+  test44<S>();
+  test45<S>();
+  test46<S>();
+  test47<S>();
+  test48<S>();
+  test49<S>();
+  test50<S>();
+  test51<S>();
+  test52<S>();
+  test53<S>();
+  test54<S>();
+  test55<S>();
+
+#if TEST_STD_VER > 17
+  static_assert(test0<S>());
+  static_assert(test1<S>());
+  static_assert(test2<S>());
+  static_assert(test3<S>());
+  static_assert(test4<S>());
+  static_assert(test5<S>());
+  static_assert(test6<S>());
+  static_assert(test7<S>());
+  static_assert(test8<S>());
+  static_assert(test9<S>());
+  static_assert(test10<S>());
+  static_assert(test11<S>());
+  static_assert(test12<S>());
+  static_assert(test13<S>());
+  static_assert(test14<S>());
+  static_assert(test15<S>());
+  static_assert(test16<S>());
+  static_assert(test17<S>());
+  static_assert(test18<S>());
+  static_assert(test19<S>());
+  static_assert(test20<S>());
+  static_assert(test21<S>());
+  static_assert(test22<S>());
+  static_assert(test23<S>());
+  static_assert(test24<S>());
+  static_assert(test25<S>());
+  static_assert(test26<S>());
+  static_assert(test27<S>());
+  static_assert(test28<S>());
+  static_assert(test29<S>());
+  static_assert(test30<S>());
+  static_assert(test31<S>());
+  static_assert(test32<S>());
+  static_assert(test33<S>());
+  static_assert(test34<S>());
+  static_assert(test35<S>());
+  static_assert(test36<S>());
+  static_assert(test37<S>());
+  static_assert(test38<S>());
+  static_assert(test39<S>());
+  static_assert(test40<S>());
+  static_assert(test41<S>());
+  static_assert(test42<S>());
+  static_assert(test43<S>());
+  static_assert(test44<S>());
+  static_assert(test45<S>());
+  static_assert(test46<S>());
+  static_assert(test47<S>());
+  static_assert(test48<S>());
+  static_assert(test49<S>());
+  static_assert(test50<S>());
+  static_assert(test51<S>());
+  static_assert(test52<S>());
+  static_assert(test53<S>());
+  static_assert(test54<S>());
+  static_assert(test55<S>());
+#endif
+}
+
+int main(int, char**)
+{
+  test<std::string>();
+#if TEST_STD_VER >= 11
+  test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string_view.pass.cpp
new file mode 100644
index 0000000..313b055
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/size_size_string_view.pass.cpp
@@ -0,0 +1,393 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(size_type pos1, size_type n1, basic_string_view sv) const; // constexpr since C++20
+
+#include <string>
+#include <stdexcept>
+#include <cassert>
+
+#include "min_allocator.h"
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type pos1, typename S::size_type n1,
+     SV sv, int x)
+{
+    if (pos1 <= s.size())
+        assert(sign(s.compare(pos1, n1, sv)) == sign(x));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            TEST_IGNORE_NODISCARD s.compare(pos1, n1, sv);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos1 > s.size());
+        }
+    }
+#endif
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), 0, 0, SV(""), 0);
+    test(S(""), 0, 0, SV("abcde"), -5);
+    test(S(""), 0, 0, SV("abcdefghij"), -10);
+    test(S(""), 0, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S(""), 0, 1, SV(""), 0);
+    test(S(""), 0, 1, SV("abcde"), -5);
+    test(S(""), 0, 1, SV("abcdefghij"), -10);
+    test(S(""), 0, 1, SV("abcdefghijklmnopqrst"), -20);
+    test(S(""), 1, 0, SV(""), 0);
+    test(S(""), 1, 0, SV("abcde"), 0);
+    test(S(""), 1, 0, SV("abcdefghij"), 0);
+    test(S(""), 1, 0, SV("abcdefghijklmnopqrst"), 0);
+    test(S("abcde"), 0, 0, SV(""), 0);
+    test(S("abcde"), 0, 0, SV("abcde"), -5);
+    test(S("abcde"), 0, 0, SV("abcdefghij"), -10);
+    test(S("abcde"), 0, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 0, 1, SV(""), 1);
+    test(S("abcde"), 0, 1, SV("abcde"), -4);
+    test(S("abcde"), 0, 1, SV("abcdefghij"), -9);
+    test(S("abcde"), 0, 1, SV("abcdefghijklmnopqrst"), -19);
+    test(S("abcde"), 0, 2, SV(""), 2);
+    test(S("abcde"), 0, 2, SV("abcde"), -3);
+    test(S("abcde"), 0, 2, SV("abcdefghij"), -8);
+    test(S("abcde"), 0, 2, SV("abcdefghijklmnopqrst"), -18);
+    test(S("abcde"), 0, 4, SV(""), 4);
+    test(S("abcde"), 0, 4, SV("abcde"), -1);
+    test(S("abcde"), 0, 4, SV("abcdefghij"), -6);
+    test(S("abcde"), 0, 4, SV("abcdefghijklmnopqrst"), -16);
+    test(S("abcde"), 0, 5, SV(""), 5);
+    test(S("abcde"), 0, 5, SV("abcde"), 0);
+    test(S("abcde"), 0, 5, SV("abcdefghij"), -5);
+    test(S("abcde"), 0, 5, SV("abcdefghijklmnopqrst"), -15);
+    test(S("abcde"), 0, 6, SV(""), 5);
+    test(S("abcde"), 0, 6, SV("abcde"), 0);
+    test(S("abcde"), 0, 6, SV("abcdefghij"), -5);
+    test(S("abcde"), 0, 6, SV("abcdefghijklmnopqrst"), -15);
+    test(S("abcde"), 1, 0, SV(""), 0);
+    test(S("abcde"), 1, 0, SV("abcde"), -5);
+    test(S("abcde"), 1, 0, SV("abcdefghij"), -10);
+    test(S("abcde"), 1, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 1, 1, SV(""), 1);
+    test(S("abcde"), 1, 1, SV("abcde"), 1);
+    test(S("abcde"), 1, 1, SV("abcdefghij"), 1);
+    test(S("abcde"), 1, 1, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 2, SV(""), 2);
+    test(S("abcde"), 1, 2, SV("abcde"), 1);
+    test(S("abcde"), 1, 2, SV("abcdefghij"), 1);
+    test(S("abcde"), 1, 2, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 3, SV(""), 3);
+    test(S("abcde"), 1, 3, SV("abcde"), 1);
+    test(S("abcde"), 1, 3, SV("abcdefghij"), 1);
+    test(S("abcde"), 1, 3, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 4, SV(""), 4);
+    test(S("abcde"), 1, 4, SV("abcde"), 1);
+    test(S("abcde"), 1, 4, SV("abcdefghij"), 1);
+    test(S("abcde"), 1, 4, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 1, 5, SV(""), 4);
+    test(S("abcde"), 1, 5, SV("abcde"), 1);
+    test(S("abcde"), 1, 5, SV("abcdefghij"), 1);
+    test(S("abcde"), 1, 5, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcde"), 2, 0, SV(""), 0);
+    test(S("abcde"), 2, 0, SV("abcde"), -5);
+    test(S("abcde"), 2, 0, SV("abcdefghij"), -10);
+    test(S("abcde"), 2, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 2, 1, SV(""), 1);
+    test(S("abcde"), 2, 1, SV("abcde"), 2);
+    test(S("abcde"), 2, 1, SV("abcdefghij"), 2);
+    test(S("abcde"), 2, 1, SV("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 2, 2, SV(""), 2);
+    test(S("abcde"), 2, 2, SV("abcde"), 2);
+    test(S("abcde"), 2, 2, SV("abcdefghij"), 2);
+    test(S("abcde"), 2, 2, SV("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 2, 3, SV(""), 3);
+    test(S("abcde"), 2, 3, SV("abcde"), 2);
+    test(S("abcde"), 2, 3, SV("abcdefghij"), 2);
+    test(S("abcde"), 2, 3, SV("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 2, 4, SV(""), 3);
+    test(S("abcde"), 2, 4, SV("abcde"), 2);
+    test(S("abcde"), 2, 4, SV("abcdefghij"), 2);
+    test(S("abcde"), 2, 4, SV("abcdefghijklmnopqrst"), 2);
+    test(S("abcde"), 4, 0, SV(""), 0);
+    test(S("abcde"), 4, 0, SV("abcde"), -5);
+    test(S("abcde"), 4, 0, SV("abcdefghij"), -10);
+    test(S("abcde"), 4, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 4, 1, SV(""), 1);
+    test(S("abcde"), 4, 1, SV("abcde"), 4);
+    test(S("abcde"), 4, 1, SV("abcdefghij"), 4);
+    test(S("abcde"), 4, 1, SV("abcdefghijklmnopqrst"), 4);
+    test(S("abcde"), 4, 2, SV(""), 1);
+    test(S("abcde"), 4, 2, SV("abcde"), 4);
+    test(S("abcde"), 4, 2, SV("abcdefghij"), 4);
+    test(S("abcde"), 4, 2, SV("abcdefghijklmnopqrst"), 4);
+    test(S("abcde"), 5, 0, SV(""), 0);
+    test(S("abcde"), 5, 0, SV("abcde"), -5);
+    test(S("abcde"), 5, 0, SV("abcdefghij"), -10);
+    test(S("abcde"), 5, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), 5, 1, SV(""), 0);
+    test(S("abcde"), 5, 1, SV("abcde"), -5);
+    test(S("abcde"), 5, 1, SV("abcdefghij"), -10);
+    test(S("abcde"), 5, 1, SV("abcdefghijklmnopqrst"), -20);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("abcde"), 6, 0, SV(""), 0);
+    test(S("abcde"), 6, 0, SV("abcde"), 0);
+    test(S("abcde"), 6, 0, SV("abcdefghij"), 0);
+    test(S("abcde"), 6, 0, SV("abcdefghijklmnopqrst"), 0);
+    test(S("abcdefghij"), 0, 0, SV(""), 0);
+    test(S("abcdefghij"), 0, 0, SV("abcde"), -5);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghij"), 0, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 0, 1, SV(""), 1);
+    test(S("abcdefghij"), 0, 1, SV("abcde"), -4);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghij"), -9);
+    test(S("abcdefghij"), 0, 1, SV("abcdefghijklmnopqrst"), -19);
+    test(S("abcdefghij"), 0, 5, SV(""), 5);
+    test(S("abcdefghij"), 0, 5, SV("abcde"), 0);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghij"), -5);
+    test(S("abcdefghij"), 0, 5, SV("abcdefghijklmnopqrst"), -15);
+    test(S("abcdefghij"), 0, 9, SV(""), 9);
+    test(S("abcdefghij"), 0, 9, SV("abcde"), 4);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghij"), -1);
+    test(S("abcdefghij"), 0, 9, SV("abcdefghijklmnopqrst"), -11);
+    test(S("abcdefghij"), 0, 10, SV(""), 10);
+    test(S("abcdefghij"), 0, 10, SV("abcde"), 5);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghij"), 0);
+    test(S("abcdefghij"), 0, 10, SV("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghij"), 0, 11, SV(""), 10);
+    test(S("abcdefghij"), 0, 11, SV("abcde"), 5);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghij"), 0);
+    test(S("abcdefghij"), 0, 11, SV("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghij"), 1, 0, SV(""), 0);
+    test(S("abcdefghij"), 1, 0, SV("abcde"), -5);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghij"), 1, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 1, 1, SV(""), 1);
+    test(S("abcdefghij"), 1, 1, SV("abcde"), 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 1, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 4, SV(""), 4);
+    test(S("abcdefghij"), 1, 4, SV("abcde"), 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 4, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 8, SV(""), 8);
+    test(S("abcdefghij"), 1, 8, SV("abcde"), 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 8, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 9, SV(""), 9);
+    test(S("abcdefghij"), 1, 9, SV("abcde"), 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 9, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 1, 10, SV(""), 9);
+    test(S("abcdefghij"), 1, 10, SV("abcde"), 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghij"), 1);
+    test(S("abcdefghij"), 1, 10, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghij"), 5, 0, SV(""), 0);
+    test(S("abcdefghij"), 5, 0, SV("abcde"), -5);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghij"), 5, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 5, 1, SV(""), 1);
+    test(S("abcdefghij"), 5, 1, SV("abcde"), 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 1, SV("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 2, SV(""), 2);
+    test(S("abcdefghij"), 5, 2, SV("abcde"), 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 2, SV("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 4, SV(""), 4);
+    test(S("abcdefghij"), 5, 4, SV("abcde"), 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 4, SV("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 5, SV(""), 5);
+    test(S("abcdefghij"), 5, 5, SV("abcde"), 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 5, SV("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 5, 6, SV(""), 5);
+    test(S("abcdefghij"), 5, 6, SV("abcde"), 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghij"), 5);
+    test(S("abcdefghij"), 5, 6, SV("abcdefghijklmnopqrst"), 5);
+    test(S("abcdefghij"), 9, 0, SV(""), 0);
+    test(S("abcdefghij"), 9, 0, SV("abcde"), -5);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghij"), 9, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 9, 1, SV(""), 1);
+    test(S("abcdefghij"), 9, 1, SV("abcde"), 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghij"), 9);
+    test(S("abcdefghij"), 9, 1, SV("abcdefghijklmnopqrst"), 9);
+    test(S("abcdefghij"), 9, 2, SV(""), 1);
+    test(S("abcdefghij"), 9, 2, SV("abcde"), 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghij"), 9);
+    test(S("abcdefghij"), 9, 2, SV("abcdefghijklmnopqrst"), 9);
+    test(S("abcdefghij"), 10, 0, SV(""), 0);
+    test(S("abcdefghij"), 10, 0, SV("abcde"), -5);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghij"), 10, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 10, 1, SV(""), 0);
+    test(S("abcdefghij"), 10, 1, SV("abcde"), -5);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghij"), -10);
+    test(S("abcdefghij"), 10, 1, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghij"), 11, 0, SV(""), 0);
+    test(S("abcdefghij"), 11, 0, SV("abcde"), 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghij"), 0);
+    test(S("abcdefghij"), 11, 0, SV("abcdefghijklmnopqrst"), 0);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 0, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV(""), 1);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcde"), -4);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghij"), -9);
+    test(S("abcdefghijklmnopqrst"), 0, 1, SV("abcdefghijklmnopqrst"), -19);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV(""), 10);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcde"), 5);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghij"), 0);
+    test(S("abcdefghijklmnopqrst"), 0, 10, SV("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV(""), 19);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcde"), 14);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghij"), 9);
+    test(S("abcdefghijklmnopqrst"), 0, 19, SV("abcdefghijklmnopqrst"), -1);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV(""), 20);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 0, 20, SV("abcdefghijklmnopqrst"), 0);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV(""), 20);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 0, 21, SV("abcdefghijklmnopqrst"), 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 1, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV(""), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 1, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV(""), 9);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 9, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV(""), 18);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 18, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV(""), 19);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 19, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV(""), 19);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcde"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghij"), 1);
+    test(S("abcdefghijklmnopqrst"), 1, 20, SV("abcdefghijklmnopqrst"), 1);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 10, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV(""), 1);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 1, SV("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV(""), 5);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 5, SV("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV(""), 9);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 9, SV("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV(""), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 10, SV("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV(""), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcde"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), 10, 11, SV("abcdefghijklmnopqrst"), 10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 19, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV(""), 1);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcde"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghij"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 1, SV("abcdefghijklmnopqrst"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV(""), 1);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcde"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghij"), 19);
+    test(S("abcdefghijklmnopqrst"), 19, 2, SV("abcdefghijklmnopqrst"), 19);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 20, 0, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcde"), -5);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghij"), -10);
+    test(S("abcdefghijklmnopqrst"), 20, 1, SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV(""), 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcde"), 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghij"), 0);
+    test(S("abcdefghijklmnopqrst"), 21, 0, SV("abcdefghijklmnopqrst"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+    test2<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+    test2<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/string.pass.cpp
new file mode 100644
index 0000000..e81946e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/string.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(const basic_string& str) const // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, int x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.compare(str));
+    assert(sign(s.compare(str)) == sign(x));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), S(""), 0);
+    test(S(""), S("abcde"), -5);
+    test(S(""), S("abcdefghij"), -10);
+    test(S(""), S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), S(""), 5);
+    test(S("abcde"), S("abcde"), 0);
+    test(S("abcde"), S("abcdefghij"), -5);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
+    test(S("abcdefghij"), S(""), 10);
+    test(S("abcdefghij"), S("abcde"), 5);
+    test(S("abcdefghij"), S("abcdefghij"), 0);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghijklmnopqrst"), S(""), 20);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), S(""), 0);
+    test(S(""), S("abcde"), -5);
+    test(S(""), S("abcdefghij"), -10);
+    test(S(""), S("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), S(""), 5);
+    test(S("abcde"), S("abcde"), 0);
+    test(S("abcde"), S("abcdefghij"), -5);
+    test(S("abcde"), S("abcdefghijklmnopqrst"), -15);
+    test(S("abcdefghij"), S(""), 10);
+    test(S("abcdefghij"), S("abcde"), 5);
+    test(S("abcdefghij"), S("abcdefghij"), 0);
+    test(S("abcdefghij"), S("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghijklmnopqrst"), S(""), 20);
+    test(S("abcdefghijklmnopqrst"), S("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), S("abcdefghijklmnopqrst"), 0);
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.compare({"abc", 1}) < 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/string_view.pass.cpp
new file mode 100644
index 0000000..72c0203
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_compare/string_view.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int compare(const basic_string_view sv) const // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+TEST_CONSTEXPR_CXX20 int sign(int x)
+{
+    if (x == 0)
+        return 0;
+    if (x < 0)
+        return -1;
+    return 1;
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, int x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.compare(sv));
+    assert(sign(s.compare(sv)) == sign(x));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), 0);
+    test(S(""), SV("abcde"), -5);
+    test(S(""), SV("abcdefghij"), -10);
+    test(S(""), SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), SV(""), 5);
+    test(S("abcde"), SV("abcde"), 0);
+    test(S("abcde"), SV("abcdefghij"), -5);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), -15);
+    test(S("abcdefghij"), SV(""), 10);
+    test(S("abcdefghij"), SV("abcde"), 5);
+    test(S("abcdefghij"), SV("abcdefghij"), 0);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghijklmnopqrst"), SV(""), 20);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), 0);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test(S(""), SV(""), 0);
+    test(S(""), SV("abcde"), -5);
+    test(S(""), SV("abcdefghij"), -10);
+    test(S(""), SV("abcdefghijklmnopqrst"), -20);
+    test(S("abcde"), SV(""), 5);
+    test(S("abcde"), SV("abcde"), 0);
+    test(S("abcde"), SV("abcdefghij"), -5);
+    test(S("abcde"), SV("abcdefghijklmnopqrst"), -15);
+    test(S("abcdefghij"), SV(""), 10);
+    test(S("abcdefghij"), SV("abcde"), 5);
+    test(S("abcdefghij"), SV("abcdefghij"), 0);
+    test(S("abcdefghij"), SV("abcdefghijklmnopqrst"), -10);
+    test(S("abcdefghijklmnopqrst"), SV(""), 20);
+    test(S("abcdefghijklmnopqrst"), SV("abcde"), 15);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghij"), 10);
+    test(S("abcdefghijklmnopqrst"), SV("abcdefghijklmnopqrst"), 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/char_size.pass.cpp
new file mode 100644
index 0000000..a2c4293
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/char_size.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_not_of(charT c, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(c, pos));
+    assert(s.find_first_not_of(c, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(c));
+    assert(s.find_first_not_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), 'q', 0, S::npos);
+    test(S(""), 'q', 1, S::npos);
+    test(S("kitcj"), 'q', 0, 0);
+    test(S("qkamf"), 'q', 1, 1);
+    test(S("nhmko"), 'q', 2, 2);
+    test(S("tpsaf"), 'q', 4, 4);
+    test(S("lahfb"), 'q', 5, S::npos);
+    test(S("irkhs"), 'q', 6, S::npos);
+    test(S("gmfhdaipsr"), 'q', 0, 0);
+    test(S("kantesmpgj"), 'q', 1, 1);
+    test(S("odaftiegpm"), 'q', 5, 5);
+    test(S("oknlrstdpi"), 'q', 9, 9);
+    test(S("eolhfgpjqk"), 'q', 10, S::npos);
+    test(S("pcdrofikas"), 'q', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'q', 0, 0);
+    test(S("bnrpehidofmqtcksjgla"), 'q', 1, 1);
+    test(S("jdmciepkaqgotsrfnhlb"), 'q', 10, 10);
+    test(S("jtdaefblsokrmhpgcnqi"), 'q', 19, 19);
+    test(S("hkbgspofltajcnedqmri"), 'q', 20, S::npos);
+    test(S("oselktgbcapndfjihrmq"), 'q', 21, S::npos);
+
+    test(S(""), 'q', S::npos);
+    test(S("q"), 'q', S::npos);
+    test(S("qqq"), 'q', S::npos);
+    test(S("csope"), 'q', 0);
+    test(S("gfsmthlkon"), 'q', 0);
+    test(S("laenfsbridchgotmkqpj"), 'q', 0);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), 'q', 0, S::npos);
+    test(S(""), 'q', 1, S::npos);
+    test(S("kitcj"), 'q', 0, 0);
+    test(S("qkamf"), 'q', 1, 1);
+    test(S("nhmko"), 'q', 2, 2);
+    test(S("tpsaf"), 'q', 4, 4);
+    test(S("lahfb"), 'q', 5, S::npos);
+    test(S("irkhs"), 'q', 6, S::npos);
+    test(S("gmfhdaipsr"), 'q', 0, 0);
+    test(S("kantesmpgj"), 'q', 1, 1);
+    test(S("odaftiegpm"), 'q', 5, 5);
+    test(S("oknlrstdpi"), 'q', 9, 9);
+    test(S("eolhfgpjqk"), 'q', 10, S::npos);
+    test(S("pcdrofikas"), 'q', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'q', 0, 0);
+    test(S("bnrpehidofmqtcksjgla"), 'q', 1, 1);
+    test(S("jdmciepkaqgotsrfnhlb"), 'q', 10, 10);
+    test(S("jtdaefblsokrmhpgcnqi"), 'q', 19, 19);
+    test(S("hkbgspofltajcnedqmri"), 'q', 20, S::npos);
+    test(S("oselktgbcapndfjihrmq"), 'q', 21, S::npos);
+
+    test(S(""), 'q', S::npos);
+    test(S("q"), 'q', S::npos);
+    test(S("qqq"), 'q', S::npos);
+    test(S("csope"), 'q', 0);
+    test(S("gfsmthlkon"), 'q', 0);
+    test(S("laenfsbridchgotmkqpj"), 'q', 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/pointer_size.pass.cpp
new file mode 100644
index 0000000..3fa13ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/pointer_size.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_not_of(const charT* s, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str, pos));
+    assert(s.find_first_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    assert(s.find_first_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, 0);
+    test(S("qanej"), "dfkap", 0, 0);
+    test(S("clbao"), "ihqrfebgad", 0, 0);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, S::npos);
+    test(S("srdfq"), "", 1, 1);
+    test(S("oemth"), "ikcrq", 1, 1);
+    test(S("cdaih"), "dmajblfhsg", 1, 3);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, S::npos);
+    test(S("cshmd"), "", 2, 2);
+    test(S("lhcdo"), "oebqi", 2, 2);
+    test(S("qnsoh"), "kojhpmbsfe", 2, S::npos);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, S::npos);
+    test(S("fmtsp"), "", 4, 4);
+    test(S("khbpm"), "aobjd", 4, 4);
+    test(S("pbsji"), "pcbahntsje", 4, 4);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, S::npos);
+    test(S("eqmpa"), "", 5, S::npos);
+    test(S("omigs"), "kocgb", 5, S::npos);
+    test(S("onmje"), "fbslrjiqkm", 5, S::npos);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, S::npos);
+    test(S("schfa"), "", 6, S::npos);
+    test(S("igdsc"), "qngpd", 6, S::npos);
+    test(S("brqgo"), "rodhqklgmb", 6, S::npos);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, S::npos);
+    test(S("hcjitbfapl"), "", 0, 0);
+    test(S("daiprenocl"), "ashjd", 0, 2);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, 1);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, S::npos);
+    test(S("qpghtfbaji"), "", 1, 1);
+    test(S("gfshlcmdjr"), "nadkh", 1, 1);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 4);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, S::npos);
+    test(S("crnklpmegd"), "", 5, 5);
+    test(S("jsbtafedoc"), "prqgn", 5, 5);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 6);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, S::npos);
+    test(S("lmofqdhpki"), "", 9, 9);
+    test(S("hnefkqimca"), "rtjpa", 9, S::npos);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, 9);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, S::npos);
+    test(S("elgofjmbrq"), "", 10, S::npos);
+    test(S("mjqdgalkpc"), "dplqa", 10, S::npos);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, S::npos);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, S::npos);
+    test(S("eqsgalomhb"), "", 11, S::npos);
+    test(S("akiteljmoh"), "lofbc", 11, S::npos);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, S::npos);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, 1);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 3);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 11);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 13);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), "", 19, 19);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, S::npos);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", 0);
+    test(S("lahfb"), "irkhs", 0);
+    test(S("gmfhd"), "kantesmpgj", 2);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", S::npos);
+    test(S("eolhfgpjqk"), "", 0);
+    test(S("nbatdlmekr"), "bnrpe", 2);
+    test(S("jdmciepkaq"), "jtdaefblso", 2);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), "", 0);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 0);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 1);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/pointer_size_size.pass.cpp
new file mode 100644
index 0000000..cdd22c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/pointer_size_size.pass.cpp
@@ -0,0 +1,399 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_not_of(const charT* s, size_type pos, size_type n) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str, pos, n));
+    assert(s.find_first_not_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, 0);
+    test(S("binja"), "gfsrt", 0, 0, 0);
+    test(S("latkm"), "pfsoc", 0, 1, 0);
+    test(S("lecfr"), "tpflm", 0, 2, 0);
+    test(S("eqkst"), "sgkec", 0, 4, 1);
+    test(S("cdafr"), "romds", 0, 5, 0);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, 0);
+    test(S("lbisk"), "pedfirsglo", 0, 1, 0);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, 0);
+    test(S("ehmja"), "dabckmepqj", 0, 9, 1);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, 0);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, 0);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, 0);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, 0);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, S::npos);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, S::npos);
+    test(S("clrgb"), "", 1, 0, 1);
+    test(S("tjmek"), "osmia", 1, 0, 1);
+    test(S("bgstp"), "ckonl", 1, 1, 1);
+    test(S("hstrk"), "ilcaj", 1, 2, 1);
+    test(S("kmspj"), "lasiq", 1, 4, 1);
+    test(S("tjboh"), "kfqmr", 1, 5, 1);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, 1);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, 1);
+    test(S("gfcql"), "skbgtahqej", 1, 5, 1);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 1);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 1);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, 1);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, 1);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, 3);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, S::npos);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, S::npos);
+    test(S("ndrhl"), "", 2, 0, 2);
+    test(S("mrecp"), "otkgb", 2, 0, 2);
+    test(S("qlasf"), "cqsjl", 2, 1, 2);
+    test(S("smaqd"), "dpifl", 2, 2, 2);
+    test(S("hjeni"), "oapht", 2, 4, 2);
+    test(S("ocmfj"), "cifts", 2, 5, 2);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, 2);
+    test(S("fklad"), "tpksqhamle", 2, 1, 2);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 3);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 3);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 2);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, 2);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, 2);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 2);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, S::npos);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, S::npos);
+    test(S("cjgao"), "", 4, 0, 4);
+    test(S("kjplq"), "mabns", 4, 0, 4);
+    test(S("herni"), "bdnrp", 4, 1, 4);
+    test(S("tadrb"), "scidp", 4, 2, 4);
+    test(S("pkfeo"), "agbjl", 4, 4, 4);
+    test(S("hoser"), "jfmpr", 4, 5, S::npos);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, 4);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, 4);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, 4);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, S::npos);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, S::npos);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, 4);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, 4);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, S::npos);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, S::npos);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, S::npos);
+    test(S("klopi"), "", 5, 0, S::npos);
+    test(S("dajhn"), "psthd", 5, 0, S::npos);
+    test(S("jbgno"), "rpmjd", 5, 1, S::npos);
+    test(S("hkjae"), "dfsmk", 5, 2, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, S::npos);
+    test(S("ktdor"), "kipnf", 5, 5, S::npos);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, S::npos);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, S::npos);
+    test(S("armql"), "pcdgltbrfj", 5, 5, S::npos);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, S::npos);
+    test(S("jcons"), "ledihrsgpf", 5, 10, S::npos);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, S::npos);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, S::npos);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, S::npos);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, S::npos);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, S::npos);
+    test(S("gajqn"), "", 6, 0, S::npos);
+    test(S("stedk"), "hrnat", 6, 0, S::npos);
+    test(S("tjkaf"), "gsqdt", 6, 1, S::npos);
+    test(S("dthpe"), "bspkd", 6, 2, S::npos);
+    test(S("klhde"), "ohcmb", 6, 4, S::npos);
+    test(S("bhlki"), "heatr", 6, 5, S::npos);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, S::npos);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, S::npos);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, S::npos);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, S::npos);
+    test(S("jblqp"), "njolbmspac", 6, 10, S::npos);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, S::npos);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, S::npos);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, S::npos);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, S::npos);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, S::npos);
+    test(S("jnkrfhotgl"), "", 0, 0, 0);
+    test(S("dltjfngbko"), "rqegt", 0, 0, 0);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, 0);
+    test(S("skrflobnqm"), "jqirk", 0, 2, 0);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, 0);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, 0);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, 0);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, 0);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, 2);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, 4);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, 0);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, 0);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, 0);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, 0);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, 1);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, S::npos);
+    test(S("shbcqnmoar"), "", 1, 0, 1);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, 1);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, 1);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 2);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, 1);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 4);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, 1);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, 1);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 3);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 1);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, 5);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, 1);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, 1);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, 5);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, 5);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, S::npos);
+    test(S("ectnhskflp"), "", 5, 0, 5);
+    test(S("fgtianblpq"), "pijag", 5, 0, 5);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, 5);
+    test(S("astedncjhk"), "qcloh", 5, 2, 5);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, 5);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 5);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, 5);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 6);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, 5);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 6);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, 5);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, 5);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, 5);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 6);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, 8);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, S::npos);
+    test(S("shoiedtcjb"), "", 9, 0, 9);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, 9);
+    test(S("dqmregkcfl"), "akmle", 9, 1, 9);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, 9);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, 9);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, S::npos);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, 9);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, 9);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, S::npos);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, 9);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, 9);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, 9);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, 9);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, 9);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, S::npos);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, S::npos);
+    test(S("ncjpmaekbs"), "", 10, 0, S::npos);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, S::npos);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, S::npos);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, S::npos);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, S::npos);
+    test(S("beanrfodgj"), "odpte", 10, 5, S::npos);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, S::npos);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, S::npos);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, S::npos);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, S::npos);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, S::npos);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, S::npos);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, S::npos);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, S::npos);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, S::npos);
+    test(S("cqjohampgd"), "", 11, 0, S::npos);
+    test(S("hobitmpsan"), "aocjb", 11, 0, S::npos);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, S::npos);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, S::npos);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, S::npos);
+    test(S("qghptonrea"), "eaqkl", 11, 5, S::npos);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, S::npos);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, S::npos);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, S::npos);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, S::npos);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, S::npos);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, S::npos);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, S::npos);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, S::npos);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, S::npos);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, S::npos);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, 0);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, 0);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, 0);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, 0);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, 0);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, 0);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, 0);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, 0);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, 0);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, 0);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, 0);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, 0);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, 0);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, 0);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, 11);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, S::npos);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, 1);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, 1);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, 1);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 2);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 2);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, 1);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, 1);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, 1);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, 1);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 3);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 2);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, 1);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, 1);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 2);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, 13);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, S::npos);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, 10);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, 10);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, 10);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, 10);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 11);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 10);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, 10);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, 10);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 10);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 11);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 10);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, 10);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, 10);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 11);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, 11);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, S::npos);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, 19);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, 19);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, 19);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, 19);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, 19);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, S::npos);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, 19);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, 19);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, 19);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, 19);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, 19);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, 19);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, 19);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, S::npos);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, S::npos);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, S::npos);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, S::npos);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, S::npos);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, S::npos);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, S::npos);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, S::npos);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, S::npos);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, S::npos);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, S::npos);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, S::npos);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, S::npos);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, S::npos);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, S::npos);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, S::npos);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, S::npos);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, S::npos);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, S::npos);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, S::npos);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, S::npos);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, S::npos);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, S::npos);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, S::npos);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, S::npos);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, S::npos);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, S::npos);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, S::npos);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, S::npos);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, S::npos);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, S::npos);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, S::npos);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, S::npos);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/string_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/string_size.pass.cpp
new file mode 100644
index 0000000..df0273d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/string_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_not_of(const basic_string& str, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str, pos));
+    assert(s.find_first_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str));
+    assert(s.find_first_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, 0);
+    test(S("qanej"), S("dfkap"), 0, 0);
+    test(S("clbao"), S("ihqrfebgad"), 0, 0);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, S::npos);
+    test(S("srdfq"), S(""), 1, 1);
+    test(S("oemth"), S("ikcrq"), 1, 1);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 3);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, S::npos);
+    test(S("cshmd"), S(""), 2, 2);
+    test(S("lhcdo"), S("oebqi"), 2, 2);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, S::npos);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, S::npos);
+    test(S("fmtsp"), S(""), 4, 4);
+    test(S("khbpm"), S("aobjd"), 4, 4);
+    test(S("pbsji"), S("pcbahntsje"), 4, 4);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, S::npos);
+    test(S("eqmpa"), S(""), 5, S::npos);
+    test(S("omigs"), S("kocgb"), 5, S::npos);
+    test(S("onmje"), S("fbslrjiqkm"), 5, S::npos);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), S(""), 6, S::npos);
+    test(S("igdsc"), S("qngpd"), 6, S::npos);
+    test(S("brqgo"), S("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), S(""), 0, 0);
+    test(S("daiprenocl"), S("ashjd"), 0, 2);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, 1);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, S::npos);
+    test(S("qpghtfbaji"), S(""), 1, 1);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, 1);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 4);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, S::npos);
+    test(S("crnklpmegd"), S(""), 5, 5);
+    test(S("jsbtafedoc"), S("prqgn"), 5, 5);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 6);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, S::npos);
+    test(S("lmofqdhpki"), S(""), 9, 9);
+    test(S("hnefkqimca"), S("rtjpa"), 9, S::npos);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 9);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, S::npos);
+    test(S("elgofjmbrq"), S(""), 10, S::npos);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, S::npos);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, S::npos);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), S(""), 11, S::npos);
+    test(S("akiteljmoh"), S("lofbc"), 11, S::npos);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, S::npos);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 1);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 3);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 11);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 13);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, 19);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, S::npos);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), 0);
+    test(S("lahfb"), S("irkhs"), 0);
+    test(S("gmfhd"), S("kantesmpgj"), 2);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), S::npos);
+    test(S("eolhfgpjqk"), S(""), 0);
+    test(S("nbatdlmekr"), S("bnrpe"), 2);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 2);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), 0);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 0);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 1);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.find_first_not_of({"abc", 1}) == 0);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/string_view_size.pass.cpp
new file mode 100644
index 0000000..ce5f765
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.not.of/string_view_size.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_not_of(basic_string_view sv, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(sv, pos));
+    assert(s.find_first_not_of(sv, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(sv));
+    assert(s.find_first_not_of(sv) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), SV(""), 0, S::npos);
+    test(S(""), SV("laenf"), 0, S::npos);
+    test(S(""), SV("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), SV(""), 1, S::npos);
+    test(S(""), SV("bjaht"), 1, S::npos);
+    test(S(""), SV("hjlcmgpket"), 1, S::npos);
+    test(S(""), SV("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), SV(""), 0, 0);
+    test(S("qanej"), SV("dfkap"), 0, 0);
+    test(S("clbao"), SV("ihqrfebgad"), 0, 0);
+    test(S("mekdn"), SV("ngtjfcalbseiqrphmkdo"), 0, S::npos);
+    test(S("srdfq"), SV(""), 1, 1);
+    test(S("oemth"), SV("ikcrq"), 1, 1);
+    test(S("cdaih"), SV("dmajblfhsg"), 1, 3);
+    test(S("qohtk"), SV("oqftjhdmkgsblacenirp"), 1, S::npos);
+    test(S("cshmd"), SV(""), 2, 2);
+    test(S("lhcdo"), SV("oebqi"), 2, 2);
+    test(S("qnsoh"), SV("kojhpmbsfe"), 2, S::npos);
+    test(S("pkrof"), SV("acbsjqogpltdkhinfrem"), 2, S::npos);
+    test(S("fmtsp"), SV(""), 4, 4);
+    test(S("khbpm"), SV("aobjd"), 4, 4);
+    test(S("pbsji"), SV("pcbahntsje"), 4, 4);
+    test(S("mprdj"), SV("fhepcrntkoagbmldqijs"), 4, S::npos);
+    test(S("eqmpa"), SV(""), 5, S::npos);
+    test(S("omigs"), SV("kocgb"), 5, S::npos);
+    test(S("onmje"), SV("fbslrjiqkm"), 5, S::npos);
+    test(S("oqmrj"), SV("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), SV(""), 6, S::npos);
+    test(S("igdsc"), SV("qngpd"), 6, S::npos);
+    test(S("brqgo"), SV("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), SV("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), SV(""), 0, 0);
+    test(S("daiprenocl"), SV("ashjd"), 0, 2);
+    test(S("litpcfdghe"), SV("mgojkldsqh"), 0, 1);
+    test(S("aidjksrolc"), SV("imqnaghkfrdtlopbjesc"), 0, S::npos);
+    test(S("qpghtfbaji"), SV(""), 1, 1);
+    test(S("gfshlcmdjr"), SV("nadkh"), 1, 1);
+    test(S("nkodajteqp"), SV("ofdrqmkebl"), 1, 4);
+    test(S("gbmetiprqd"), SV("bdfjqgatlksriohemnpc"), 1, S::npos);
+    test(S("crnklpmegd"), SV(""), 5, 5);
+    test(S("jsbtafedoc"), SV("prqgn"), 5, 5);
+    test(S("qnmodrtkeb"), SV("pejafmnokr"), 5, 6);
+    test(S("cpebqsfmnj"), SV("odnqkgijrhabfmcestlp"), 5, S::npos);
+    test(S("lmofqdhpki"), SV(""), 9, 9);
+    test(S("hnefkqimca"), SV("rtjpa"), 9, S::npos);
+    test(S("drtasbgmfp"), SV("ktsrmnqagd"), 9, 9);
+    test(S("lsaijeqhtr"), SV("rtdhgcisbnmoaqkfpjle"), 9, S::npos);
+    test(S("elgofjmbrq"), SV(""), 10, S::npos);
+    test(S("mjqdgalkpc"), SV("dplqa"), 10, S::npos);
+    test(S("kthqnfcerm"), SV("dkacjoptns"), 10, S::npos);
+    test(S("dfsjhanorc"), SV("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), SV(""), 11, S::npos);
+    test(S("akiteljmoh"), SV("lofbc"), 11, S::npos);
+    test(S("hlbdfreqjo"), SV("astoegbfpn"), 11, S::npos);
+    test(S("taqobhlerg"), SV("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), SV(""), 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), SV("lbtqd"), 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), SV("tboimldpjh"), 0, 1);
+    test(S("dicfltehbsgrmojnpkaq"), SV("slcerthdaiqjfnobgkpm"), 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), SV(""), 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), SV("aqibs"), 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), SV("gtfblmqinc"), 1, 3);
+    test(S("gpifsqlrdkbonjtmheca"), SV("mkqpbtdalgniorhfescj"), 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), SV(""), 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), SV("pblas"), 10, 11);
+    test(S("fkdrbqltsgmcoiphneaj"), SV("arosdhcfme"), 10, 13);
+    test(S("crsplifgtqedjohnabmk"), SV("blkhjeogicatqfnpdmsr"), 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), SV(""), 19, 19);
+    test(S("copqdhstbingamjfkler"), SV("djkqc"), 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), SV("lgokshjtpb"), 19, S::npos);
+    test(S("kojatdhlcmigpbfrqnes"), SV("bqjhtkfepimcnsgrlado"), 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), SV(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), SV("nocfa"), 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), SV("bgtajmiedc"), 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), SV("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), SV(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), SV("gfsrt"), 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), SV("pfsocbhjtm"), 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), SV("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), SV(""), S::npos);
+    test(S(""), SV("laenf"), S::npos);
+    test(S(""), SV("pqlnkmbdjo"), S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), SV(""), 0);
+    test(S("lahfb"), SV("irkhs"), 0);
+    test(S("gmfhd"), SV("kantesmpgj"), 2);
+    test(S("odaft"), SV("oknlrstdpiqmjbaghcfe"), S::npos);
+    test(S("eolhfgpjqk"), SV(""), 0);
+    test(S("nbatdlmekr"), SV("bnrpe"), 2);
+    test(S("jdmciepkaq"), SV("jtdaefblso"), 2);
+    test(S("hkbgspoflt"), SV("oselktgbcapndfjihrmq"), S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), SV(""), 0);
+    test(S("qjghlnftcaismkropdeb"), SV("bjaht"), 0);
+    test(S("pnalfrdtkqcmojiesbhg"), SV("hjlcmgpket"), 1);
+    test(S("pniotcfrhqsmgdkjbael"), SV("htaobedqikfplcgjsmrn"), S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/char_size.pass.cpp
new file mode 100644
index 0000000..c1e8131
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/char_size.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_of(charT c, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(c, pos));
+    assert(s.find_first_of(c, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(c));
+    assert(s.find_first_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), 'e', 0, S::npos);
+    test(S(""), 'e', 1, S::npos);
+    test(S("kitcj"), 'e', 0, S::npos);
+    test(S("qkamf"), 'e', 1, S::npos);
+    test(S("nhmko"), 'e', 2, S::npos);
+    test(S("tpsaf"), 'e', 4, S::npos);
+    test(S("lahfb"), 'e', 5, S::npos);
+    test(S("irkhs"), 'e', 6, S::npos);
+    test(S("gmfhdaipsr"), 'e', 0, S::npos);
+    test(S("kantesmpgj"), 'e', 1, 4);
+    test(S("odaftiegpm"), 'e', 5, 6);
+    test(S("oknlrstdpi"), 'e', 9, S::npos);
+    test(S("eolhfgpjqk"), 'e', 10, S::npos);
+    test(S("pcdrofikas"), 'e', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'e', 0, 7);
+    test(S("bnrpehidofmqtcksjgla"), 'e', 1, 4);
+    test(S("jdmciepkaqgotsrfnhlb"), 'e', 10, S::npos);
+    test(S("jtdaefblsokrmhpgcnqi"), 'e', 19, S::npos);
+    test(S("hkbgspofltajcnedqmri"), 'e', 20, S::npos);
+    test(S("oselktgbcapndfjihrmq"), 'e', 21, S::npos);
+
+    test(S(""), 'e', S::npos);
+    test(S("csope"), 'e', 4);
+    test(S("gfsmthlkon"), 'e', S::npos);
+    test(S("laenfsbridchgotmkqpj"), 'e', 2);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), 'e', 0, S::npos);
+    test(S(""), 'e', 1, S::npos);
+    test(S("kitcj"), 'e', 0, S::npos);
+    test(S("qkamf"), 'e', 1, S::npos);
+    test(S("nhmko"), 'e', 2, S::npos);
+    test(S("tpsaf"), 'e', 4, S::npos);
+    test(S("lahfb"), 'e', 5, S::npos);
+    test(S("irkhs"), 'e', 6, S::npos);
+    test(S("gmfhdaipsr"), 'e', 0, S::npos);
+    test(S("kantesmpgj"), 'e', 1, 4);
+    test(S("odaftiegpm"), 'e', 5, 6);
+    test(S("oknlrstdpi"), 'e', 9, S::npos);
+    test(S("eolhfgpjqk"), 'e', 10, S::npos);
+    test(S("pcdrofikas"), 'e', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'e', 0, 7);
+    test(S("bnrpehidofmqtcksjgla"), 'e', 1, 4);
+    test(S("jdmciepkaqgotsrfnhlb"), 'e', 10, S::npos);
+    test(S("jtdaefblsokrmhpgcnqi"), 'e', 19, S::npos);
+    test(S("hkbgspofltajcnedqmri"), 'e', 20, S::npos);
+    test(S("oselktgbcapndfjihrmq"), 'e', 21, S::npos);
+
+    test(S(""), 'e', S::npos);
+    test(S("csope"), 'e', 4);
+    test(S("gfsmthlkon"), 'e', S::npos);
+    test(S("laenfsbridchgotmkqpj"), 'e', 2);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/pointer_size.pass.cpp
new file mode 100644
index 0000000..aff18ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/pointer_size.pass.cpp
@@ -0,0 +1,171 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_of(const charT* s, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str, pos));
+    assert(s.find_first_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str));
+    assert(s.find_first_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, S::npos);
+    test(S("qanej"), "dfkap", 0, 1);
+    test(S("clbao"), "ihqrfebgad", 0, 2);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, 0);
+    test(S("srdfq"), "", 1, S::npos);
+    test(S("oemth"), "ikcrq", 1, S::npos);
+    test(S("cdaih"), "dmajblfhsg", 1, 1);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, 1);
+    test(S("cshmd"), "", 2, S::npos);
+    test(S("lhcdo"), "oebqi", 2, 4);
+    test(S("qnsoh"), "kojhpmbsfe", 2, 2);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, 2);
+    test(S("fmtsp"), "", 4, S::npos);
+    test(S("khbpm"), "aobjd", 4, S::npos);
+    test(S("pbsji"), "pcbahntsje", 4, S::npos);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, 4);
+    test(S("eqmpa"), "", 5, S::npos);
+    test(S("omigs"), "kocgb", 5, S::npos);
+    test(S("onmje"), "fbslrjiqkm", 5, S::npos);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, S::npos);
+    test(S("schfa"), "", 6, S::npos);
+    test(S("igdsc"), "qngpd", 6, S::npos);
+    test(S("brqgo"), "rodhqklgmb", 6, S::npos);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, S::npos);
+    test(S("hcjitbfapl"), "", 0, S::npos);
+    test(S("daiprenocl"), "ashjd", 0, 0);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, 0);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, 0);
+    test(S("qpghtfbaji"), "", 1, S::npos);
+    test(S("gfshlcmdjr"), "nadkh", 1, 3);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 1);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, 1);
+    test(S("crnklpmegd"), "", 5, S::npos);
+    test(S("jsbtafedoc"), "prqgn", 5, S::npos);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 5);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, 5);
+    test(S("lmofqdhpki"), "", 9, S::npos);
+    test(S("hnefkqimca"), "rtjpa", 9, 9);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, S::npos);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, 9);
+    test(S("elgofjmbrq"), "", 10, S::npos);
+    test(S("mjqdgalkpc"), "dplqa", 10, S::npos);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, S::npos);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, S::npos);
+    test(S("eqsgalomhb"), "", 11, S::npos);
+    test(S("akiteljmoh"), "lofbc", 11, S::npos);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, S::npos);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, 3);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, 3);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 10);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, 10);
+    test(S("niptglfbosehkamrdqcj"), "", 19, S::npos);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, S::npos);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", S::npos);
+    test(S("lahfb"), "irkhs", 2);
+    test(S("gmfhd"), "kantesmpgj", 0);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", 0);
+    test(S("eolhfgpjqk"), "", S::npos);
+    test(S("nbatdlmekr"), "bnrpe", 0);
+    test(S("jdmciepkaq"), "jtdaefblso", 0);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", 0);
+    test(S("gprdcokbnjhlsfmtieqa"), "", S::npos);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 1);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 0);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/pointer_size_size.pass.cpp
new file mode 100644
index 0000000..816268d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/pointer_size_size.pass.cpp
@@ -0,0 +1,399 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_of(const charT* s, size_type pos, size_type n) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str, pos, n));
+    assert(s.find_first_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, S::npos);
+    test(S("binja"), "gfsrt", 0, 0, S::npos);
+    test(S("latkm"), "pfsoc", 0, 1, S::npos);
+    test(S("lecfr"), "tpflm", 0, 2, S::npos);
+    test(S("eqkst"), "sgkec", 0, 4, 0);
+    test(S("cdafr"), "romds", 0, 5, 1);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, S::npos);
+    test(S("lbisk"), "pedfirsglo", 0, 1, S::npos);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, S::npos);
+    test(S("ehmja"), "dabckmepqj", 0, 9, 0);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, 1);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, S::npos);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, S::npos);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, S::npos);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, 0);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, 0);
+    test(S("clrgb"), "", 1, 0, S::npos);
+    test(S("tjmek"), "osmia", 1, 0, S::npos);
+    test(S("bgstp"), "ckonl", 1, 1, S::npos);
+    test(S("hstrk"), "ilcaj", 1, 2, S::npos);
+    test(S("kmspj"), "lasiq", 1, 4, 2);
+    test(S("tjboh"), "kfqmr", 1, 5, S::npos);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, S::npos);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, 3);
+    test(S("gfcql"), "skbgtahqej", 1, 5, S::npos);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 2);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 4);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, S::npos);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, S::npos);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, 1);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, 1);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, 1);
+    test(S("ndrhl"), "", 2, 0, S::npos);
+    test(S("mrecp"), "otkgb", 2, 0, S::npos);
+    test(S("qlasf"), "cqsjl", 2, 1, S::npos);
+    test(S("smaqd"), "dpifl", 2, 2, 4);
+    test(S("hjeni"), "oapht", 2, 4, S::npos);
+    test(S("ocmfj"), "cifts", 2, 5, 3);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, S::npos);
+    test(S("fklad"), "tpksqhamle", 2, 1, S::npos);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 2);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 2);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 3);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, S::npos);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, S::npos);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 3);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, 2);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, 2);
+    test(S("cjgao"), "", 4, 0, S::npos);
+    test(S("kjplq"), "mabns", 4, 0, S::npos);
+    test(S("herni"), "bdnrp", 4, 1, S::npos);
+    test(S("tadrb"), "scidp", 4, 2, S::npos);
+    test(S("pkfeo"), "agbjl", 4, 4, S::npos);
+    test(S("hoser"), "jfmpr", 4, 5, 4);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, S::npos);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, S::npos);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, S::npos);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, 4);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, 4);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, S::npos);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, S::npos);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, 4);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, 4);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, 4);
+    test(S("klopi"), "", 5, 0, S::npos);
+    test(S("dajhn"), "psthd", 5, 0, S::npos);
+    test(S("jbgno"), "rpmjd", 5, 1, S::npos);
+    test(S("hkjae"), "dfsmk", 5, 2, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, S::npos);
+    test(S("ktdor"), "kipnf", 5, 5, S::npos);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, S::npos);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, S::npos);
+    test(S("armql"), "pcdgltbrfj", 5, 5, S::npos);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, S::npos);
+    test(S("jcons"), "ledihrsgpf", 5, 10, S::npos);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, S::npos);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, S::npos);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, S::npos);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, S::npos);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, S::npos);
+    test(S("gajqn"), "", 6, 0, S::npos);
+    test(S("stedk"), "hrnat", 6, 0, S::npos);
+    test(S("tjkaf"), "gsqdt", 6, 1, S::npos);
+    test(S("dthpe"), "bspkd", 6, 2, S::npos);
+    test(S("klhde"), "ohcmb", 6, 4, S::npos);
+    test(S("bhlki"), "heatr", 6, 5, S::npos);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, S::npos);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, S::npos);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, S::npos);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, S::npos);
+    test(S("jblqp"), "njolbmspac", 6, 10, S::npos);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, S::npos);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, S::npos);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, S::npos);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, S::npos);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, S::npos);
+    test(S("jnkrfhotgl"), "", 0, 0, S::npos);
+    test(S("dltjfngbko"), "rqegt", 0, 0, S::npos);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, 8);
+    test(S("skrflobnqm"), "jqirk", 0, 2, 8);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, 1);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, 3);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, S::npos);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, 5);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, 0);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, 0);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, 1);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, S::npos);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, S::npos);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, 4);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, 0);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, 0);
+    test(S("shbcqnmoar"), "", 1, 0, S::npos);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, S::npos);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, S::npos);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 1);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, 4);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 1);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, S::npos);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, S::npos);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 1);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 4);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, 1);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, S::npos);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, S::npos);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, 1);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, 1);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, 1);
+    test(S("ectnhskflp"), "", 5, 0, S::npos);
+    test(S("fgtianblpq"), "pijag", 5, 0, S::npos);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, S::npos);
+    test(S("astedncjhk"), "qcloh", 5, 2, 6);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, S::npos);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 6);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, S::npos);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 5);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, 7);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 5);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, S::npos);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, S::npos);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, S::npos);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 5);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, 5);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, 5);
+    test(S("shoiedtcjb"), "", 9, 0, S::npos);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, S::npos);
+    test(S("dqmregkcfl"), "akmle", 9, 1, S::npos);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, S::npos);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, S::npos);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, 9);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, S::npos);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, S::npos);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, 9);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, S::npos);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, S::npos);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, S::npos);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, S::npos);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, S::npos);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, 9);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, 9);
+    test(S("ncjpmaekbs"), "", 10, 0, S::npos);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, S::npos);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, S::npos);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, S::npos);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, S::npos);
+    test(S("beanrfodgj"), "odpte", 10, 5, S::npos);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, S::npos);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, S::npos);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, S::npos);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, S::npos);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, S::npos);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, S::npos);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, S::npos);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, S::npos);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, S::npos);
+    test(S("cqjohampgd"), "", 11, 0, S::npos);
+    test(S("hobitmpsan"), "aocjb", 11, 0, S::npos);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, S::npos);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, S::npos);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, S::npos);
+    test(S("qghptonrea"), "eaqkl", 11, 5, S::npos);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, S::npos);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, S::npos);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, S::npos);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, S::npos);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, S::npos);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, S::npos);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, S::npos);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, S::npos);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, S::npos);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, S::npos);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, S::npos);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, S::npos);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, 4);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, 3);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, 3);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, 3);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, S::npos);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, 19);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, 2);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, 2);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, 2);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, S::npos);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, 16);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, 1);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, 0);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, 0);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, S::npos);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, S::npos);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, 6);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 1);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 1);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, 6);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, S::npos);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, 19);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, 4);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 1);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 1);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, S::npos);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, 7);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 1);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, 1);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, 1);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, S::npos);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, S::npos);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, 12);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, S::npos);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 10);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 15);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, S::npos);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, S::npos);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 11);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 10);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 11);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, S::npos);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, 18);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 10);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, 10);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, 10);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, S::npos);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, S::npos);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, S::npos);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, S::npos);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, S::npos);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, 19);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, S::npos);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, S::npos);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, S::npos);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, S::npos);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, S::npos);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, S::npos);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, S::npos);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, 19);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, 19);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, 19);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, S::npos);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, S::npos);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, S::npos);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, S::npos);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, S::npos);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, S::npos);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, S::npos);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, S::npos);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, S::npos);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, S::npos);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, S::npos);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, S::npos);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, S::npos);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, S::npos);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, S::npos);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, S::npos);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, S::npos);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, S::npos);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, S::npos);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, S::npos);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, S::npos);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, S::npos);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, S::npos);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, S::npos);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, S::npos);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, S::npos);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, S::npos);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, S::npos);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, S::npos);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, S::npos);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/string_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/string_size.pass.cpp
new file mode 100644
index 0000000..68b5afc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/string_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_of(const basic_string& str, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str, pos));
+    assert(s.find_first_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str));
+    assert(s.find_first_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, S::npos);
+    test(S("qanej"), S("dfkap"), 0, 1);
+    test(S("clbao"), S("ihqrfebgad"), 0, 2);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, 0);
+    test(S("srdfq"), S(""), 1, S::npos);
+    test(S("oemth"), S("ikcrq"), 1, S::npos);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 1);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, 1);
+    test(S("cshmd"), S(""), 2, S::npos);
+    test(S("lhcdo"), S("oebqi"), 2, 4);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, 2);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, 2);
+    test(S("fmtsp"), S(""), 4, S::npos);
+    test(S("khbpm"), S("aobjd"), 4, S::npos);
+    test(S("pbsji"), S("pcbahntsje"), 4, S::npos);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, 4);
+    test(S("eqmpa"), S(""), 5, S::npos);
+    test(S("omigs"), S("kocgb"), 5, S::npos);
+    test(S("onmje"), S("fbslrjiqkm"), 5, S::npos);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), S(""), 6, S::npos);
+    test(S("igdsc"), S("qngpd"), 6, S::npos);
+    test(S("brqgo"), S("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), S(""), 0, S::npos);
+    test(S("daiprenocl"), S("ashjd"), 0, 0);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, 0);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, 0);
+    test(S("qpghtfbaji"), S(""), 1, S::npos);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, 3);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 1);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, 1);
+    test(S("crnklpmegd"), S(""), 5, S::npos);
+    test(S("jsbtafedoc"), S("prqgn"), 5, S::npos);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 5);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, 5);
+    test(S("lmofqdhpki"), S(""), 9, S::npos);
+    test(S("hnefkqimca"), S("rtjpa"), 9, 9);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, S::npos);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, 9);
+    test(S("elgofjmbrq"), S(""), 10, S::npos);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, S::npos);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, S::npos);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), S(""), 11, S::npos);
+    test(S("akiteljmoh"), S("lofbc"), 11, S::npos);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, S::npos);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, 3);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, 3);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 10);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, 10);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, S::npos);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, S::npos);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), S::npos);
+    test(S("lahfb"), S("irkhs"), 2);
+    test(S("gmfhd"), S("kantesmpgj"), 0);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), 0);
+    test(S("eolhfgpjqk"), S(""), S::npos);
+    test(S("nbatdlmekr"), S("bnrpe"), 0);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 0);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), 0);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), S::npos);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 1);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 0);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.find_first_of({"abc", 1}) == std::string::npos);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/string_view_size.pass.cpp
new file mode 100644
index 0000000..50c6f73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.first.of/string_view_size.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_first_of(const basic_string_view sv, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(sv, pos));
+    assert(s.find_first_of(sv, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(sv));
+    assert(s.find_first_of(sv) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), SV(""), 0, S::npos);
+    test(S(""), SV("laenf"), 0, S::npos);
+    test(S(""), SV("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), SV(""), 1, S::npos);
+    test(S(""), SV("bjaht"), 1, S::npos);
+    test(S(""), SV("hjlcmgpket"), 1, S::npos);
+    test(S(""), SV("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), SV(""), 0, S::npos);
+    test(S("qanej"), SV("dfkap"), 0, 1);
+    test(S("clbao"), SV("ihqrfebgad"), 0, 2);
+    test(S("mekdn"), SV("ngtjfcalbseiqrphmkdo"), 0, 0);
+    test(S("srdfq"), SV(""), 1, S::npos);
+    test(S("oemth"), SV("ikcrq"), 1, S::npos);
+    test(S("cdaih"), SV("dmajblfhsg"), 1, 1);
+    test(S("qohtk"), SV("oqftjhdmkgsblacenirp"), 1, 1);
+    test(S("cshmd"), SV(""), 2, S::npos);
+    test(S("lhcdo"), SV("oebqi"), 2, 4);
+    test(S("qnsoh"), SV("kojhpmbsfe"), 2, 2);
+    test(S("pkrof"), SV("acbsjqogpltdkhinfrem"), 2, 2);
+    test(S("fmtsp"), SV(""), 4, S::npos);
+    test(S("khbpm"), SV("aobjd"), 4, S::npos);
+    test(S("pbsji"), SV("pcbahntsje"), 4, S::npos);
+    test(S("mprdj"), SV("fhepcrntkoagbmldqijs"), 4, 4);
+    test(S("eqmpa"), SV(""), 5, S::npos);
+    test(S("omigs"), SV("kocgb"), 5, S::npos);
+    test(S("onmje"), SV("fbslrjiqkm"), 5, S::npos);
+    test(S("oqmrj"), SV("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), SV(""), 6, S::npos);
+    test(S("igdsc"), SV("qngpd"), 6, S::npos);
+    test(S("brqgo"), SV("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), SV("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), SV(""), 0, S::npos);
+    test(S("daiprenocl"), SV("ashjd"), 0, 0);
+    test(S("litpcfdghe"), SV("mgojkldsqh"), 0, 0);
+    test(S("aidjksrolc"), SV("imqnaghkfrdtlopbjesc"), 0, 0);
+    test(S("qpghtfbaji"), SV(""), 1, S::npos);
+    test(S("gfshlcmdjr"), SV("nadkh"), 1, 3);
+    test(S("nkodajteqp"), SV("ofdrqmkebl"), 1, 1);
+    test(S("gbmetiprqd"), SV("bdfjqgatlksriohemnpc"), 1, 1);
+    test(S("crnklpmegd"), SV(""), 5, S::npos);
+    test(S("jsbtafedoc"), SV("prqgn"), 5, S::npos);
+    test(S("qnmodrtkeb"), SV("pejafmnokr"), 5, 5);
+    test(S("cpebqsfmnj"), SV("odnqkgijrhabfmcestlp"), 5, 5);
+    test(S("lmofqdhpki"), SV(""), 9, S::npos);
+    test(S("hnefkqimca"), SV("rtjpa"), 9, 9);
+    test(S("drtasbgmfp"), SV("ktsrmnqagd"), 9, S::npos);
+    test(S("lsaijeqhtr"), SV("rtdhgcisbnmoaqkfpjle"), 9, 9);
+    test(S("elgofjmbrq"), SV(""), 10, S::npos);
+    test(S("mjqdgalkpc"), SV("dplqa"), 10, S::npos);
+    test(S("kthqnfcerm"), SV("dkacjoptns"), 10, S::npos);
+    test(S("dfsjhanorc"), SV("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), SV(""), 11, S::npos);
+    test(S("akiteljmoh"), SV("lofbc"), 11, S::npos);
+    test(S("hlbdfreqjo"), SV("astoegbfpn"), 11, S::npos);
+    test(S("taqobhlerg"), SV("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), SV(""), 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), SV("lbtqd"), 0, 3);
+    test(S("pnracgfkjdiholtbqsem"), SV("tboimldpjh"), 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), SV("slcerthdaiqjfnobgkpm"), 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), SV(""), 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), SV("aqibs"), 1, 3);
+    test(S("rbtaqjhgkneisldpmfoc"), SV("gtfblmqinc"), 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), SV("mkqpbtdalgniorhfescj"), 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), SV(""), 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), SV("pblas"), 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), SV("arosdhcfme"), 10, 10);
+    test(S("crsplifgtqedjohnabmk"), SV("blkhjeogicatqfnpdmsr"), 10, 10);
+    test(S("niptglfbosehkamrdqcj"), SV(""), 19, S::npos);
+    test(S("copqdhstbingamjfkler"), SV("djkqc"), 19, S::npos);
+    test(S("mrtaefilpdsgocnhqbjk"), SV("lgokshjtpb"), 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), SV("bqjhtkfepimcnsgrlado"), 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), SV(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), SV("nocfa"), 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), SV("bgtajmiedc"), 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), SV("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), SV(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), SV("gfsrt"), 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), SV("pfsocbhjtm"), 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), SV("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), SV(""), S::npos);
+    test(S(""), SV("laenf"), S::npos);
+    test(S(""), SV("pqlnkmbdjo"), S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), SV(""), S::npos);
+    test(S("lahfb"), SV("irkhs"), 2);
+    test(S("gmfhd"), SV("kantesmpgj"), 0);
+    test(S("odaft"), SV("oknlrstdpiqmjbaghcfe"), 0);
+    test(S("eolhfgpjqk"), SV(""), S::npos);
+    test(S("nbatdlmekr"), SV("bnrpe"), 0);
+    test(S("jdmciepkaq"), SV("jtdaefblso"), 0);
+    test(S("hkbgspoflt"), SV("oselktgbcapndfjihrmq"), 0);
+    test(S("gprdcokbnjhlsfmtieqa"), SV(""), S::npos);
+    test(S("qjghlnftcaismkropdeb"), SV("bjaht"), 1);
+    test(S("pnalfrdtkqcmojiesbhg"), SV("hjlcmgpket"), 0);
+    test(S("pniotcfrhqsmgdkjbael"), SV("htaobedqikfplcgjsmrn"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/char_size.pass.cpp
new file mode 100644
index 0000000..8cd6388
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/char_size.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_not_of(charT c, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(c, pos));
+    assert(s.find_last_not_of(c, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(c));
+    assert(s.find_last_not_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), 'i', 0, S::npos);
+    test(S(""), 'i', 1, S::npos);
+    test(S("kitcj"), 'i', 0, 0);
+    test(S("qkamf"), 'i', 1, 1);
+    test(S("nhmko"), 'i', 2, 2);
+    test(S("tpsaf"), 'i', 4, 4);
+    test(S("lahfb"), 'i', 5, 4);
+    test(S("irkhs"), 'i', 6, 4);
+    test(S("gmfhdaipsr"), 'i', 0, 0);
+    test(S("kantesmpgj"), 'i', 1, 1);
+    test(S("odaftiegpm"), 'i', 5, 4);
+    test(S("oknlrstdpi"), 'i', 9, 8);
+    test(S("eolhfgpjqk"), 'i', 10, 9);
+    test(S("pcdrofikas"), 'i', 11, 9);
+    test(S("nbatdlmekrgcfqsophij"), 'i', 0, 0);
+    test(S("bnrpehidofmqtcksjgla"), 'i', 1, 1);
+    test(S("jdmciepkaqgotsrfnhlb"), 'i', 10, 10);
+    test(S("jtdaefblsokrmhpgcnqi"), 'i', 19, 18);
+    test(S("hkbgspofltajcnedqmri"), 'i', 20, 18);
+    test(S("oselktgbcapndfjihrmq"), 'i', 21, 19);
+
+    test(S(""), 'i', S::npos);
+    test(S("csope"), 'i', 4);
+    test(S("gfsmthlkon"), 'i', 9);
+    test(S("laenfsbridchgotmkqpj"), 'i', 19);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), 'i', 0, S::npos);
+    test(S(""), 'i', 1, S::npos);
+    test(S("kitcj"), 'i', 0, 0);
+    test(S("qkamf"), 'i', 1, 1);
+    test(S("nhmko"), 'i', 2, 2);
+    test(S("tpsaf"), 'i', 4, 4);
+    test(S("lahfb"), 'i', 5, 4);
+    test(S("irkhs"), 'i', 6, 4);
+    test(S("gmfhdaipsr"), 'i', 0, 0);
+    test(S("kantesmpgj"), 'i', 1, 1);
+    test(S("odaftiegpm"), 'i', 5, 4);
+    test(S("oknlrstdpi"), 'i', 9, 8);
+    test(S("eolhfgpjqk"), 'i', 10, 9);
+    test(S("pcdrofikas"), 'i', 11, 9);
+    test(S("nbatdlmekrgcfqsophij"), 'i', 0, 0);
+    test(S("bnrpehidofmqtcksjgla"), 'i', 1, 1);
+    test(S("jdmciepkaqgotsrfnhlb"), 'i', 10, 10);
+    test(S("jtdaefblsokrmhpgcnqi"), 'i', 19, 18);
+    test(S("hkbgspofltajcnedqmri"), 'i', 20, 18);
+    test(S("oselktgbcapndfjihrmq"), 'i', 21, 19);
+
+    test(S(""), 'i', S::npos);
+    test(S("csope"), 'i', 4);
+    test(S("gfsmthlkon"), 'i', 9);
+    test(S("laenfsbridchgotmkqpj"), 'i', 19);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/pointer_size.pass.cpp
new file mode 100644
index 0000000..0f4f75e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/pointer_size.pass.cpp
@@ -0,0 +1,171 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_not_of(const charT* s, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str, pos));
+    assert(s.find_last_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str));
+    assert(s.find_last_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, 0);
+    test(S("qanej"), "dfkap", 0, 0);
+    test(S("clbao"), "ihqrfebgad", 0, 0);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, S::npos);
+    test(S("srdfq"), "", 1, 1);
+    test(S("oemth"), "ikcrq", 1, 1);
+    test(S("cdaih"), "dmajblfhsg", 1, 0);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, S::npos);
+    test(S("cshmd"), "", 2, 2);
+    test(S("lhcdo"), "oebqi", 2, 2);
+    test(S("qnsoh"), "kojhpmbsfe", 2, 1);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, S::npos);
+    test(S("fmtsp"), "", 4, 4);
+    test(S("khbpm"), "aobjd", 4, 4);
+    test(S("pbsji"), "pcbahntsje", 4, 4);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, S::npos);
+    test(S("eqmpa"), "", 5, 4);
+    test(S("omigs"), "kocgb", 5, 4);
+    test(S("onmje"), "fbslrjiqkm", 5, 4);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, S::npos);
+    test(S("schfa"), "", 6, 4);
+    test(S("igdsc"), "qngpd", 6, 4);
+    test(S("brqgo"), "rodhqklgmb", 6, S::npos);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, S::npos);
+    test(S("hcjitbfapl"), "", 0, 0);
+    test(S("daiprenocl"), "ashjd", 0, S::npos);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, S::npos);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, S::npos);
+    test(S("qpghtfbaji"), "", 1, 1);
+    test(S("gfshlcmdjr"), "nadkh", 1, 1);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 0);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, S::npos);
+    test(S("crnklpmegd"), "", 5, 5);
+    test(S("jsbtafedoc"), "prqgn", 5, 5);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 4);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, S::npos);
+    test(S("lmofqdhpki"), "", 9, 9);
+    test(S("hnefkqimca"), "rtjpa", 9, 8);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, 9);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, S::npos);
+    test(S("elgofjmbrq"), "", 10, 9);
+    test(S("mjqdgalkpc"), "dplqa", 10, 9);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, 9);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, S::npos);
+    test(S("eqsgalomhb"), "", 11, 9);
+    test(S("akiteljmoh"), "lofbc", 11, 9);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, 8);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, S::npos);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 0);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 9);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 9);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), "", 19, 19);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, 16);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, 19);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, 18);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, 19);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, 19);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, 19);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, 19);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", 4);
+    test(S("lahfb"), "irkhs", 4);
+    test(S("gmfhd"), "kantesmpgj", 4);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", S::npos);
+    test(S("eolhfgpjqk"), "", 9);
+    test(S("nbatdlmekr"), "bnrpe", 8);
+    test(S("jdmciepkaq"), "jtdaefblso", 9);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), "", 19);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 18);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 17);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/pointer_size_size.pass.cpp
new file mode 100644
index 0000000..eb3d825
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/pointer_size_size.pass.cpp
@@ -0,0 +1,399 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_not_of(const charT* s, size_type pos, size_type n) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str, pos, n));
+    assert(s.find_last_not_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, 0);
+    test(S("binja"), "gfsrt", 0, 0, 0);
+    test(S("latkm"), "pfsoc", 0, 1, 0);
+    test(S("lecfr"), "tpflm", 0, 2, 0);
+    test(S("eqkst"), "sgkec", 0, 4, S::npos);
+    test(S("cdafr"), "romds", 0, 5, 0);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, 0);
+    test(S("lbisk"), "pedfirsglo", 0, 1, 0);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, 0);
+    test(S("ehmja"), "dabckmepqj", 0, 9, S::npos);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, 0);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, 0);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, 0);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, 0);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, S::npos);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, S::npos);
+    test(S("clrgb"), "", 1, 0, 1);
+    test(S("tjmek"), "osmia", 1, 0, 1);
+    test(S("bgstp"), "ckonl", 1, 1, 1);
+    test(S("hstrk"), "ilcaj", 1, 2, 1);
+    test(S("kmspj"), "lasiq", 1, 4, 1);
+    test(S("tjboh"), "kfqmr", 1, 5, 1);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, 1);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, 1);
+    test(S("gfcql"), "skbgtahqej", 1, 5, 1);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 1);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 1);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, 1);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, 1);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, S::npos);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, S::npos);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, S::npos);
+    test(S("ndrhl"), "", 2, 0, 2);
+    test(S("mrecp"), "otkgb", 2, 0, 2);
+    test(S("qlasf"), "cqsjl", 2, 1, 2);
+    test(S("smaqd"), "dpifl", 2, 2, 2);
+    test(S("hjeni"), "oapht", 2, 4, 2);
+    test(S("ocmfj"), "cifts", 2, 5, 2);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, 2);
+    test(S("fklad"), "tpksqhamle", 2, 1, 2);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 1);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 1);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 2);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, 2);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, 2);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 2);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, S::npos);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, S::npos);
+    test(S("cjgao"), "", 4, 0, 4);
+    test(S("kjplq"), "mabns", 4, 0, 4);
+    test(S("herni"), "bdnrp", 4, 1, 4);
+    test(S("tadrb"), "scidp", 4, 2, 4);
+    test(S("pkfeo"), "agbjl", 4, 4, 4);
+    test(S("hoser"), "jfmpr", 4, 5, 3);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, 4);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, 4);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, 4);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, 3);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, 2);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, 4);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, 4);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, 3);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, 2);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, S::npos);
+    test(S("klopi"), "", 5, 0, 4);
+    test(S("dajhn"), "psthd", 5, 0, 4);
+    test(S("jbgno"), "rpmjd", 5, 1, 4);
+    test(S("hkjae"), "dfsmk", 5, 2, 4);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, 4);
+    test(S("ktdor"), "kipnf", 5, 5, 4);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, 4);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, 4);
+    test(S("armql"), "pcdgltbrfj", 5, 5, 3);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, 4);
+    test(S("jcons"), "ledihrsgpf", 5, 10, 3);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, 4);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, 4);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, 1);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, 2);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, S::npos);
+    test(S("gajqn"), "", 6, 0, 4);
+    test(S("stedk"), "hrnat", 6, 0, 4);
+    test(S("tjkaf"), "gsqdt", 6, 1, 4);
+    test(S("dthpe"), "bspkd", 6, 2, 4);
+    test(S("klhde"), "ohcmb", 6, 4, 4);
+    test(S("bhlki"), "heatr", 6, 5, 4);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, 4);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, 4);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, 4);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, 4);
+    test(S("jblqp"), "njolbmspac", 6, 10, 3);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, 4);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, 4);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, 1);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, S::npos);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, S::npos);
+    test(S("jnkrfhotgl"), "", 0, 0, 0);
+    test(S("dltjfngbko"), "rqegt", 0, 0, 0);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, 0);
+    test(S("skrflobnqm"), "jqirk", 0, 2, 0);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, 0);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, 0);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, 0);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, 0);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, S::npos);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, S::npos);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, 0);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, 0);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, 0);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, 0);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, S::npos);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, S::npos);
+    test(S("shbcqnmoar"), "", 1, 0, 1);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, 1);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, 1);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 0);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, 1);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 0);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, 1);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, 1);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 0);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 1);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, S::npos);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, 1);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, 1);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, S::npos);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, S::npos);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, S::npos);
+    test(S("ectnhskflp"), "", 5, 0, 5);
+    test(S("fgtianblpq"), "pijag", 5, 0, 5);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, 5);
+    test(S("astedncjhk"), "qcloh", 5, 2, 5);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, 5);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 5);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, 5);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 4);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, 5);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 3);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, 5);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, 5);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, 5);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 1);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, S::npos);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, S::npos);
+    test(S("shoiedtcjb"), "", 9, 0, 9);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, 9);
+    test(S("dqmregkcfl"), "akmle", 9, 1, 9);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, 9);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, 9);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, 8);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, 9);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, 9);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, 8);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, 9);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, 9);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, 9);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, 9);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, 9);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, 3);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, S::npos);
+    test(S("ncjpmaekbs"), "", 10, 0, 9);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, 9);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, 9);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, 9);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, 9);
+    test(S("beanrfodgj"), "odpte", 10, 5, 9);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, 9);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, 9);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, 8);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, 9);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, 8);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, 9);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, 9);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, 7);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, 5);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, S::npos);
+    test(S("cqjohampgd"), "", 11, 0, 9);
+    test(S("hobitmpsan"), "aocjb", 11, 0, 9);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, 9);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, 9);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, 9);
+    test(S("qghptonrea"), "eaqkl", 11, 5, 7);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, 9);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, 9);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, 9);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, 7);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, 8);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, 9);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, 9);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, 8);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, S::npos);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, S::npos);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, 0);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, 0);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, 0);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, 0);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, 0);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, 0);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, 0);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, 0);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, 0);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, 0);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, 0);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, 0);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, 0);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, 0);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, S::npos);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, S::npos);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, 1);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, 1);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, 1);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 0);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 0);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, 1);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, 1);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, 1);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, 1);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 0);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 0);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, 1);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, 1);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 0);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, S::npos);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, S::npos);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, 10);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, 10);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, 10);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, 10);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 9);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 10);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, 10);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, 10);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 10);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 8);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 10);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, 10);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, 10);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 8);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, S::npos);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, S::npos);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, 19);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, 19);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, 19);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, 19);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, 19);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, 17);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, 19);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, 19);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, 19);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, 19);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, 19);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, 19);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, 19);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, 18);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, 7);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, S::npos);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, 19);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, 19);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, 19);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, 19);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, 18);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, 18);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, 19);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, 19);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, 18);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, 18);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, 17);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, 19);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, 19);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, 19);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, 1);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, S::npos);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, 19);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, 19);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, 19);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, 19);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, 19);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, 19);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, 19);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, 19);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, 18);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, 19);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, 19);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, 19);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, 19);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, 19);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, 7);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/string_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/string_size.pass.cpp
new file mode 100644
index 0000000..b228baa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/string_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_not_of(const basic_string& str, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str, pos));
+    assert(s.find_last_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str));
+    assert(s.find_last_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, 0);
+    test(S("qanej"), S("dfkap"), 0, 0);
+    test(S("clbao"), S("ihqrfebgad"), 0, 0);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, S::npos);
+    test(S("srdfq"), S(""), 1, 1);
+    test(S("oemth"), S("ikcrq"), 1, 1);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 0);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, S::npos);
+    test(S("cshmd"), S(""), 2, 2);
+    test(S("lhcdo"), S("oebqi"), 2, 2);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, 1);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, S::npos);
+    test(S("fmtsp"), S(""), 4, 4);
+    test(S("khbpm"), S("aobjd"), 4, 4);
+    test(S("pbsji"), S("pcbahntsje"), 4, 4);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, S::npos);
+    test(S("eqmpa"), S(""), 5, 4);
+    test(S("omigs"), S("kocgb"), 5, 4);
+    test(S("onmje"), S("fbslrjiqkm"), 5, 4);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), S(""), 6, 4);
+    test(S("igdsc"), S("qngpd"), 6, 4);
+    test(S("brqgo"), S("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), S(""), 0, 0);
+    test(S("daiprenocl"), S("ashjd"), 0, S::npos);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, S::npos);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, S::npos);
+    test(S("qpghtfbaji"), S(""), 1, 1);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, 1);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 0);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, S::npos);
+    test(S("crnklpmegd"), S(""), 5, 5);
+    test(S("jsbtafedoc"), S("prqgn"), 5, 5);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 4);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, S::npos);
+    test(S("lmofqdhpki"), S(""), 9, 9);
+    test(S("hnefkqimca"), S("rtjpa"), 9, 8);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 9);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, S::npos);
+    test(S("elgofjmbrq"), S(""), 10, 9);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, 9);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, 9);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), S(""), 11, 9);
+    test(S("akiteljmoh"), S("lofbc"), 11, 9);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, 8);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, S::npos);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 0);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 9);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 9);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, 19);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 16);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, 19);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, 18);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, 19);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, 19);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, 19);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, 19);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), 4);
+    test(S("lahfb"), S("irkhs"), 4);
+    test(S("gmfhd"), S("kantesmpgj"), 4);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), S::npos);
+    test(S("eolhfgpjqk"), S(""), 9);
+    test(S("nbatdlmekr"), S("bnrpe"), 8);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 9);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), 19);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 18);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 17);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.find_last_not_of({"abc", 1}) == s.size() - 1);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/string_view_size.pass.cpp
new file mode 100644
index 0000000..07ab842
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.not.of/string_view_size.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_not_of(basic_string_view sv, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(sv, pos));
+    assert(s.find_last_not_of(sv, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(sv));
+    assert(s.find_last_not_of(sv) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), SV(""), 0, S::npos);
+    test(S(""), SV("laenf"), 0, S::npos);
+    test(S(""), SV("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), SV(""), 1, S::npos);
+    test(S(""), SV("bjaht"), 1, S::npos);
+    test(S(""), SV("hjlcmgpket"), 1, S::npos);
+    test(S(""), SV("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), SV(""), 0, 0);
+    test(S("qanej"), SV("dfkap"), 0, 0);
+    test(S("clbao"), SV("ihqrfebgad"), 0, 0);
+    test(S("mekdn"), SV("ngtjfcalbseiqrphmkdo"), 0, S::npos);
+    test(S("srdfq"), SV(""), 1, 1);
+    test(S("oemth"), SV("ikcrq"), 1, 1);
+    test(S("cdaih"), SV("dmajblfhsg"), 1, 0);
+    test(S("qohtk"), SV("oqftjhdmkgsblacenirp"), 1, S::npos);
+    test(S("cshmd"), SV(""), 2, 2);
+    test(S("lhcdo"), SV("oebqi"), 2, 2);
+    test(S("qnsoh"), SV("kojhpmbsfe"), 2, 1);
+    test(S("pkrof"), SV("acbsjqogpltdkhinfrem"), 2, S::npos);
+    test(S("fmtsp"), SV(""), 4, 4);
+    test(S("khbpm"), SV("aobjd"), 4, 4);
+    test(S("pbsji"), SV("pcbahntsje"), 4, 4);
+    test(S("mprdj"), SV("fhepcrntkoagbmldqijs"), 4, S::npos);
+    test(S("eqmpa"), SV(""), 5, 4);
+    test(S("omigs"), SV("kocgb"), 5, 4);
+    test(S("onmje"), SV("fbslrjiqkm"), 5, 4);
+    test(S("oqmrj"), SV("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), SV(""), 6, 4);
+    test(S("igdsc"), SV("qngpd"), 6, 4);
+    test(S("brqgo"), SV("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), SV("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), SV(""), 0, 0);
+    test(S("daiprenocl"), SV("ashjd"), 0, S::npos);
+    test(S("litpcfdghe"), SV("mgojkldsqh"), 0, S::npos);
+    test(S("aidjksrolc"), SV("imqnaghkfrdtlopbjesc"), 0, S::npos);
+    test(S("qpghtfbaji"), SV(""), 1, 1);
+    test(S("gfshlcmdjr"), SV("nadkh"), 1, 1);
+    test(S("nkodajteqp"), SV("ofdrqmkebl"), 1, 0);
+    test(S("gbmetiprqd"), SV("bdfjqgatlksriohemnpc"), 1, S::npos);
+    test(S("crnklpmegd"), SV(""), 5, 5);
+    test(S("jsbtafedoc"), SV("prqgn"), 5, 5);
+    test(S("qnmodrtkeb"), SV("pejafmnokr"), 5, 4);
+    test(S("cpebqsfmnj"), SV("odnqkgijrhabfmcestlp"), 5, S::npos);
+    test(S("lmofqdhpki"), SV(""), 9, 9);
+    test(S("hnefkqimca"), SV("rtjpa"), 9, 8);
+    test(S("drtasbgmfp"), SV("ktsrmnqagd"), 9, 9);
+    test(S("lsaijeqhtr"), SV("rtdhgcisbnmoaqkfpjle"), 9, S::npos);
+    test(S("elgofjmbrq"), SV(""), 10, 9);
+    test(S("mjqdgalkpc"), SV("dplqa"), 10, 9);
+    test(S("kthqnfcerm"), SV("dkacjoptns"), 10, 9);
+    test(S("dfsjhanorc"), SV("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), SV(""), 11, 9);
+    test(S("akiteljmoh"), SV("lofbc"), 11, 9);
+    test(S("hlbdfreqjo"), SV("astoegbfpn"), 11, 8);
+    test(S("taqobhlerg"), SV("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), SV(""), 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), SV("lbtqd"), 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), SV("tboimldpjh"), 0, S::npos);
+    test(S("dicfltehbsgrmojnpkaq"), SV("slcerthdaiqjfnobgkpm"), 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), SV(""), 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), SV("aqibs"), 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), SV("gtfblmqinc"), 1, 0);
+    test(S("gpifsqlrdkbonjtmheca"), SV("mkqpbtdalgniorhfescj"), 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), SV(""), 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), SV("pblas"), 10, 9);
+    test(S("fkdrbqltsgmcoiphneaj"), SV("arosdhcfme"), 10, 9);
+    test(S("crsplifgtqedjohnabmk"), SV("blkhjeogicatqfnpdmsr"), 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), SV(""), 19, 19);
+    test(S("copqdhstbingamjfkler"), SV("djkqc"), 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), SV("lgokshjtpb"), 19, 16);
+    test(S("kojatdhlcmigpbfrqnes"), SV("bqjhtkfepimcnsgrlado"), 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), SV(""), 20, 19);
+    test(S("gjnhidfsepkrtaqbmclo"), SV("nocfa"), 20, 18);
+    test(S("spocfaktqdbiejlhngmr"), SV("bgtajmiedc"), 20, 19);
+    test(S("rphmlekgfscndtaobiqj"), SV("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), SV(""), 21, 19);
+    test(S("binjagtfldkrspcomqeh"), SV("gfsrt"), 21, 19);
+    test(S("latkmisecnorjbfhqpdg"), SV("pfsocbhjtm"), 21, 19);
+    test(S("lecfratdjkhnsmqpoigb"), SV("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), SV(""), S::npos);
+    test(S(""), SV("laenf"), S::npos);
+    test(S(""), SV("pqlnkmbdjo"), S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), SV(""), 4);
+    test(S("lahfb"), SV("irkhs"), 4);
+    test(S("gmfhd"), SV("kantesmpgj"), 4);
+    test(S("odaft"), SV("oknlrstdpiqmjbaghcfe"), S::npos);
+    test(S("eolhfgpjqk"), SV(""), 9);
+    test(S("nbatdlmekr"), SV("bnrpe"), 8);
+    test(S("jdmciepkaq"), SV("jtdaefblso"), 9);
+    test(S("hkbgspoflt"), SV("oselktgbcapndfjihrmq"), S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), SV(""), 19);
+    test(S("qjghlnftcaismkropdeb"), SV("bjaht"), 18);
+    test(S("pnalfrdtkqcmojiesbhg"), SV("hjlcmgpket"), 17);
+    test(S("pniotcfrhqsmgdkjbael"), SV("htaobedqikfplcgjsmrn"), S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+     typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+     typedef std::string_view SV;
+     test0<S, SV>();
+     test1<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/char_size.pass.cpp
new file mode 100644
index 0000000..ee72833
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/char_size.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_of(charT c, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(c, pos));
+    assert(s.find_last_of(c, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(c));
+    assert(s.find_last_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), 'm', 0, S::npos);
+    test(S(""), 'm', 1, S::npos);
+    test(S("kitcj"), 'm', 0, S::npos);
+    test(S("qkamf"), 'm', 1, S::npos);
+    test(S("nhmko"), 'm', 2, 2);
+    test(S("tpsaf"), 'm', 4, S::npos);
+    test(S("lahfb"), 'm', 5, S::npos);
+    test(S("irkhs"), 'm', 6, S::npos);
+    test(S("gmfhdaipsr"), 'm', 0, S::npos);
+    test(S("kantesmpgj"), 'm', 1, S::npos);
+    test(S("odaftiegpm"), 'm', 5, S::npos);
+    test(S("oknlrstdpi"), 'm', 9, S::npos);
+    test(S("eolhfgpjqk"), 'm', 10, S::npos);
+    test(S("pcdrofikas"), 'm', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'm', 0, S::npos);
+    test(S("bnrpehidofmqtcksjgla"), 'm', 1, S::npos);
+    test(S("jdmciepkaqgotsrfnhlb"), 'm', 10, 2);
+    test(S("jtdaefblsokrmhpgcnqi"), 'm', 19, 12);
+    test(S("hkbgspofltajcnedqmri"), 'm', 20, 17);
+    test(S("oselktgbcapndfjihrmq"), 'm', 21, 18);
+
+    test(S(""), 'm', S::npos);
+    test(S("csope"), 'm', S::npos);
+    test(S("gfsmthlkon"), 'm', 3);
+    test(S("laenfsbridchgotmkqpj"), 'm', 15);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), 'm', 0, S::npos);
+    test(S(""), 'm', 1, S::npos);
+    test(S("kitcj"), 'm', 0, S::npos);
+    test(S("qkamf"), 'm', 1, S::npos);
+    test(S("nhmko"), 'm', 2, 2);
+    test(S("tpsaf"), 'm', 4, S::npos);
+    test(S("lahfb"), 'm', 5, S::npos);
+    test(S("irkhs"), 'm', 6, S::npos);
+    test(S("gmfhdaipsr"), 'm', 0, S::npos);
+    test(S("kantesmpgj"), 'm', 1, S::npos);
+    test(S("odaftiegpm"), 'm', 5, S::npos);
+    test(S("oknlrstdpi"), 'm', 9, S::npos);
+    test(S("eolhfgpjqk"), 'm', 10, S::npos);
+    test(S("pcdrofikas"), 'm', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'm', 0, S::npos);
+    test(S("bnrpehidofmqtcksjgla"), 'm', 1, S::npos);
+    test(S("jdmciepkaqgotsrfnhlb"), 'm', 10, 2);
+    test(S("jtdaefblsokrmhpgcnqi"), 'm', 19, 12);
+    test(S("hkbgspofltajcnedqmri"), 'm', 20, 17);
+    test(S("oselktgbcapndfjihrmq"), 'm', 21, 18);
+
+    test(S(""), 'm', S::npos);
+    test(S("csope"), 'm', S::npos);
+    test(S("gfsmthlkon"), 'm', 3);
+    test(S("laenfsbridchgotmkqpj"), 'm', 15);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/pointer_size.pass.cpp
new file mode 100644
index 0000000..3a09beb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/pointer_size.pass.cpp
@@ -0,0 +1,171 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_of(const charT* s, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos));
+    assert(s.find_last_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str));
+    assert(s.find_last_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, S::npos);
+    test(S("qanej"), "dfkap", 0, S::npos);
+    test(S("clbao"), "ihqrfebgad", 0, S::npos);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, 0);
+    test(S("srdfq"), "", 1, S::npos);
+    test(S("oemth"), "ikcrq", 1, S::npos);
+    test(S("cdaih"), "dmajblfhsg", 1, 1);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, 1);
+    test(S("cshmd"), "", 2, S::npos);
+    test(S("lhcdo"), "oebqi", 2, S::npos);
+    test(S("qnsoh"), "kojhpmbsfe", 2, 2);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, 2);
+    test(S("fmtsp"), "", 4, S::npos);
+    test(S("khbpm"), "aobjd", 4, 2);
+    test(S("pbsji"), "pcbahntsje", 4, 3);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, 4);
+    test(S("eqmpa"), "", 5, S::npos);
+    test(S("omigs"), "kocgb", 5, 3);
+    test(S("onmje"), "fbslrjiqkm", 5, 3);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, 4);
+    test(S("schfa"), "", 6, S::npos);
+    test(S("igdsc"), "qngpd", 6, 2);
+    test(S("brqgo"), "rodhqklgmb", 6, 4);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, 4);
+    test(S("hcjitbfapl"), "", 0, S::npos);
+    test(S("daiprenocl"), "ashjd", 0, 0);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, 0);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, 0);
+    test(S("qpghtfbaji"), "", 1, S::npos);
+    test(S("gfshlcmdjr"), "nadkh", 1, S::npos);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 1);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, 1);
+    test(S("crnklpmegd"), "", 5, S::npos);
+    test(S("jsbtafedoc"), "prqgn", 5, S::npos);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 5);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, 5);
+    test(S("lmofqdhpki"), "", 9, S::npos);
+    test(S("hnefkqimca"), "rtjpa", 9, 9);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, 7);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, 9);
+    test(S("elgofjmbrq"), "", 10, S::npos);
+    test(S("mjqdgalkpc"), "dplqa", 10, 8);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, 6);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, 9);
+    test(S("eqsgalomhb"), "", 11, S::npos);
+    test(S("akiteljmoh"), "lofbc", 11, 8);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, 9);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, 9);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, S::npos);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, S::npos);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 10);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, 10);
+    test(S("niptglfbosehkamrdqcj"), "", 19, S::npos);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, 16);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, 19);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, 18);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, 19);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, 12);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, 17);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, 19);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", S::npos);
+    test(S("lahfb"), "irkhs", 2);
+    test(S("gmfhd"), "kantesmpgj", 1);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", 4);
+    test(S("eolhfgpjqk"), "", S::npos);
+    test(S("nbatdlmekr"), "bnrpe", 9);
+    test(S("jdmciepkaq"), "jtdaefblso", 8);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", 9);
+    test(S("gprdcokbnjhlsfmtieqa"), "", S::npos);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 19);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 19);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", 19);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/pointer_size_size.pass.cpp
new file mode 100644
index 0000000..5ab9ed5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/pointer_size_size.pass.cpp
@@ -0,0 +1,399 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_of(const charT* s, size_type pos, size_type n) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos, n));
+    assert(s.find_last_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, S::npos);
+    test(S("binja"), "gfsrt", 0, 0, S::npos);
+    test(S("latkm"), "pfsoc", 0, 1, S::npos);
+    test(S("lecfr"), "tpflm", 0, 2, S::npos);
+    test(S("eqkst"), "sgkec", 0, 4, 0);
+    test(S("cdafr"), "romds", 0, 5, S::npos);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, S::npos);
+    test(S("lbisk"), "pedfirsglo", 0, 1, S::npos);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, S::npos);
+    test(S("ehmja"), "dabckmepqj", 0, 9, 0);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, S::npos);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, S::npos);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, S::npos);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, S::npos);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, 0);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, 0);
+    test(S("clrgb"), "", 1, 0, S::npos);
+    test(S("tjmek"), "osmia", 1, 0, S::npos);
+    test(S("bgstp"), "ckonl", 1, 1, S::npos);
+    test(S("hstrk"), "ilcaj", 1, 2, S::npos);
+    test(S("kmspj"), "lasiq", 1, 4, S::npos);
+    test(S("tjboh"), "kfqmr", 1, 5, S::npos);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, S::npos);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, S::npos);
+    test(S("gfcql"), "skbgtahqej", 1, 5, 0);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 0);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 0);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, S::npos);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, S::npos);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, 1);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, 1);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, 1);
+    test(S("ndrhl"), "", 2, 0, S::npos);
+    test(S("mrecp"), "otkgb", 2, 0, S::npos);
+    test(S("qlasf"), "cqsjl", 2, 1, S::npos);
+    test(S("smaqd"), "dpifl", 2, 2, S::npos);
+    test(S("hjeni"), "oapht", 2, 4, 0);
+    test(S("ocmfj"), "cifts", 2, 5, 1);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, S::npos);
+    test(S("fklad"), "tpksqhamle", 2, 1, S::npos);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 2);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 2);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 0);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, S::npos);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, S::npos);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 1);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, 2);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, 2);
+    test(S("cjgao"), "", 4, 0, S::npos);
+    test(S("kjplq"), "mabns", 4, 0, S::npos);
+    test(S("herni"), "bdnrp", 4, 1, S::npos);
+    test(S("tadrb"), "scidp", 4, 2, S::npos);
+    test(S("pkfeo"), "agbjl", 4, 4, S::npos);
+    test(S("hoser"), "jfmpr", 4, 5, 4);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, S::npos);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, S::npos);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, 3);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, 4);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, 4);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, S::npos);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, S::npos);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, 4);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, 4);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, 4);
+    test(S("klopi"), "", 5, 0, S::npos);
+    test(S("dajhn"), "psthd", 5, 0, S::npos);
+    test(S("jbgno"), "rpmjd", 5, 1, S::npos);
+    test(S("hkjae"), "dfsmk", 5, 2, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, 3);
+    test(S("ktdor"), "kipnf", 5, 5, 0);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, S::npos);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, S::npos);
+    test(S("armql"), "pcdgltbrfj", 5, 5, 4);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, 0);
+    test(S("jcons"), "ledihrsgpf", 5, 10, 4);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, S::npos);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, S::npos);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, 4);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, 4);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, 4);
+    test(S("gajqn"), "", 6, 0, S::npos);
+    test(S("stedk"), "hrnat", 6, 0, S::npos);
+    test(S("tjkaf"), "gsqdt", 6, 1, S::npos);
+    test(S("dthpe"), "bspkd", 6, 2, S::npos);
+    test(S("klhde"), "ohcmb", 6, 4, 2);
+    test(S("bhlki"), "heatr", 6, 5, 1);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, S::npos);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, S::npos);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, 3);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, 3);
+    test(S("jblqp"), "njolbmspac", 6, 10, 4);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, S::npos);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, S::npos);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, 4);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, 4);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, 4);
+    test(S("jnkrfhotgl"), "", 0, 0, S::npos);
+    test(S("dltjfngbko"), "rqegt", 0, 0, S::npos);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, S::npos);
+    test(S("skrflobnqm"), "jqirk", 0, 2, S::npos);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, S::npos);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, S::npos);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, S::npos);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, S::npos);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, 0);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, 0);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, S::npos);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, S::npos);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, S::npos);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, S::npos);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, 0);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, 0);
+    test(S("shbcqnmoar"), "", 1, 0, S::npos);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, S::npos);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, S::npos);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 1);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, S::npos);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 1);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, S::npos);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, S::npos);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 1);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 0);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, 1);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, S::npos);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, S::npos);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, 1);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, 1);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, 1);
+    test(S("ectnhskflp"), "", 5, 0, S::npos);
+    test(S("fgtianblpq"), "pijag", 5, 0, S::npos);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, S::npos);
+    test(S("astedncjhk"), "qcloh", 5, 2, S::npos);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, 2);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 4);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, S::npos);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 5);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, S::npos);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 5);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, 4);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, S::npos);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, S::npos);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 5);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, 5);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, 5);
+    test(S("shoiedtcjb"), "", 9, 0, S::npos);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, S::npos);
+    test(S("dqmregkcfl"), "akmle", 9, 1, S::npos);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, 6);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, 8);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, 9);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, S::npos);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, 7);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, 9);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, 6);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, 5);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, S::npos);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, 6);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, 7);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, 9);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, 9);
+    test(S("ncjpmaekbs"), "", 10, 0, S::npos);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, S::npos);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, 1);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, 2);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, 7);
+    test(S("beanrfodgj"), "odpte", 10, 5, 7);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, S::npos);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, 1);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, 9);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, 8);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, 9);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, S::npos);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, 8);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, 9);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, 9);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, 9);
+    test(S("cqjohampgd"), "", 11, 0, S::npos);
+    test(S("hobitmpsan"), "aocjb", 11, 0, S::npos);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, 1);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, 7);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, 3);
+    test(S("qghptonrea"), "eaqkl", 11, 5, 9);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, S::npos);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, 1);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, 7);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, 9);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, 9);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, S::npos);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, S::npos);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, 9);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, 9);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, 9);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, S::npos);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, S::npos);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, S::npos);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, S::npos);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, S::npos);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, S::npos);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, S::npos);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, S::npos);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, S::npos);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, S::npos);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, S::npos);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, S::npos);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, S::npos);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, S::npos);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, 0);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, 0);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, S::npos);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, S::npos);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, S::npos);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 1);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 1);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, S::npos);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, S::npos);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, S::npos);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, S::npos);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 1);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 1);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, S::npos);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, S::npos);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 1);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, 1);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, 1);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, S::npos);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, S::npos);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, S::npos);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, 7);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 10);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 6);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, S::npos);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, 9);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 5);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 10);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 9);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, S::npos);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, S::npos);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 10);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, 10);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, 10);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, S::npos);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, S::npos);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, 16);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, 7);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, 16);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, 19);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, S::npos);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, 15);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, 17);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, 16);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, 16);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, S::npos);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, 10);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, 19);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, 19);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, 19);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, S::npos);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, S::npos);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, 15);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, 12);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, 19);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, 19);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, S::npos);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, 3);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, 19);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, 19);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, 19);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, 4);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, 17);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, 19);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, 19);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, S::npos);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, S::npos);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, 6);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, 13);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, 10);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, 17);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, S::npos);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, 14);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, 19);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, 14);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, 16);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, S::npos);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, 17);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, 17);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, 19);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, 19);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/string_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/string_size.pass.cpp
new file mode 100644
index 0000000..5d0d630
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/string_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_of(const basic_string& str, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos));
+    assert(s.find_last_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str));
+    assert(s.find_last_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, S::npos);
+    test(S("qanej"), S("dfkap"), 0, S::npos);
+    test(S("clbao"), S("ihqrfebgad"), 0, S::npos);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, 0);
+    test(S("srdfq"), S(""), 1, S::npos);
+    test(S("oemth"), S("ikcrq"), 1, S::npos);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 1);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, 1);
+    test(S("cshmd"), S(""), 2, S::npos);
+    test(S("lhcdo"), S("oebqi"), 2, S::npos);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, 2);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, 2);
+    test(S("fmtsp"), S(""), 4, S::npos);
+    test(S("khbpm"), S("aobjd"), 4, 2);
+    test(S("pbsji"), S("pcbahntsje"), 4, 3);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, 4);
+    test(S("eqmpa"), S(""), 5, S::npos);
+    test(S("omigs"), S("kocgb"), 5, 3);
+    test(S("onmje"), S("fbslrjiqkm"), 5, 3);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, 4);
+    test(S("schfa"), S(""), 6, S::npos);
+    test(S("igdsc"), S("qngpd"), 6, 2);
+    test(S("brqgo"), S("rodhqklgmb"), 6, 4);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, 4);
+    test(S("hcjitbfapl"), S(""), 0, S::npos);
+    test(S("daiprenocl"), S("ashjd"), 0, 0);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, 0);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, 0);
+    test(S("qpghtfbaji"), S(""), 1, S::npos);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, S::npos);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 1);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, 1);
+    test(S("crnklpmegd"), S(""), 5, S::npos);
+    test(S("jsbtafedoc"), S("prqgn"), 5, S::npos);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 5);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, 5);
+    test(S("lmofqdhpki"), S(""), 9, S::npos);
+    test(S("hnefkqimca"), S("rtjpa"), 9, 9);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 7);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, 9);
+    test(S("elgofjmbrq"), S(""), 10, S::npos);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, 8);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, 6);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, 9);
+    test(S("eqsgalomhb"), S(""), 11, S::npos);
+    test(S("akiteljmoh"), S("lofbc"), 11, 8);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, 9);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, 9);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, S::npos);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, S::npos);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 10);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, 10);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, S::npos);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 16);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, 19);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, 18);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, 19);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, 12);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, 17);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, 19);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), S::npos);
+    test(S("lahfb"), S("irkhs"), 2);
+    test(S("gmfhd"), S("kantesmpgj"), 1);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), 4);
+    test(S("eolhfgpjqk"), S(""), S::npos);
+    test(S("nbatdlmekr"), S("bnrpe"), 9);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 8);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), 9);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), S::npos);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 19);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 19);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), 19);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.find_last_of({"abc", 1}) == std::string::npos);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/string_view_size.pass.cpp
new file mode 100644
index 0000000..24d85bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find.last.of/string_view_size.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find_last_of(const basic_string_view sv, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(sv, pos));
+    assert(s.find_last_of(sv, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(sv));
+    assert(s.find_last_of(sv) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), SV(""), 0, S::npos);
+    test(S(""), SV("laenf"), 0, S::npos);
+    test(S(""), SV("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), SV(""), 1, S::npos);
+    test(S(""), SV("bjaht"), 1, S::npos);
+    test(S(""), SV("hjlcmgpket"), 1, S::npos);
+    test(S(""), SV("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), SV(""), 0, S::npos);
+    test(S("qanej"), SV("dfkap"), 0, S::npos);
+    test(S("clbao"), SV("ihqrfebgad"), 0, S::npos);
+    test(S("mekdn"), SV("ngtjfcalbseiqrphmkdo"), 0, 0);
+    test(S("srdfq"), SV(""), 1, S::npos);
+    test(S("oemth"), SV("ikcrq"), 1, S::npos);
+    test(S("cdaih"), SV("dmajblfhsg"), 1, 1);
+    test(S("qohtk"), SV("oqftjhdmkgsblacenirp"), 1, 1);
+    test(S("cshmd"), SV(""), 2, S::npos);
+    test(S("lhcdo"), SV("oebqi"), 2, S::npos);
+    test(S("qnsoh"), SV("kojhpmbsfe"), 2, 2);
+    test(S("pkrof"), SV("acbsjqogpltdkhinfrem"), 2, 2);
+    test(S("fmtsp"), SV(""), 4, S::npos);
+    test(S("khbpm"), SV("aobjd"), 4, 2);
+    test(S("pbsji"), SV("pcbahntsje"), 4, 3);
+    test(S("mprdj"), SV("fhepcrntkoagbmldqijs"), 4, 4);
+    test(S("eqmpa"), SV(""), 5, S::npos);
+    test(S("omigs"), SV("kocgb"), 5, 3);
+    test(S("onmje"), SV("fbslrjiqkm"), 5, 3);
+    test(S("oqmrj"), SV("jeidpcmalhfnqbgtrsko"), 5, 4);
+    test(S("schfa"), SV(""), 6, S::npos);
+    test(S("igdsc"), SV("qngpd"), 6, 2);
+    test(S("brqgo"), SV("rodhqklgmb"), 6, 4);
+    test(S("tnrph"), SV("thdjgafrlbkoiqcspmne"), 6, 4);
+    test(S("hcjitbfapl"), SV(""), 0, S::npos);
+    test(S("daiprenocl"), SV("ashjd"), 0, 0);
+    test(S("litpcfdghe"), SV("mgojkldsqh"), 0, 0);
+    test(S("aidjksrolc"), SV("imqnaghkfrdtlopbjesc"), 0, 0);
+    test(S("qpghtfbaji"), SV(""), 1, S::npos);
+    test(S("gfshlcmdjr"), SV("nadkh"), 1, S::npos);
+    test(S("nkodajteqp"), SV("ofdrqmkebl"), 1, 1);
+    test(S("gbmetiprqd"), SV("bdfjqgatlksriohemnpc"), 1, 1);
+    test(S("crnklpmegd"), SV(""), 5, S::npos);
+    test(S("jsbtafedoc"), SV("prqgn"), 5, S::npos);
+    test(S("qnmodrtkeb"), SV("pejafmnokr"), 5, 5);
+    test(S("cpebqsfmnj"), SV("odnqkgijrhabfmcestlp"), 5, 5);
+    test(S("lmofqdhpki"), SV(""), 9, S::npos);
+    test(S("hnefkqimca"), SV("rtjpa"), 9, 9);
+    test(S("drtasbgmfp"), SV("ktsrmnqagd"), 9, 7);
+    test(S("lsaijeqhtr"), SV("rtdhgcisbnmoaqkfpjle"), 9, 9);
+    test(S("elgofjmbrq"), SV(""), 10, S::npos);
+    test(S("mjqdgalkpc"), SV("dplqa"), 10, 8);
+    test(S("kthqnfcerm"), SV("dkacjoptns"), 10, 6);
+    test(S("dfsjhanorc"), SV("hqfimtrgnbekpdcsjalo"), 10, 9);
+    test(S("eqsgalomhb"), SV(""), 11, S::npos);
+    test(S("akiteljmoh"), SV("lofbc"), 11, 8);
+    test(S("hlbdfreqjo"), SV("astoegbfpn"), 11, 9);
+    test(S("taqobhlerg"), SV("pdgreqomsncafklhtibj"), 11, 9);
+    test(S("snafbdlghrjkpqtoceim"), SV(""), 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), SV("lbtqd"), 0, S::npos);
+    test(S("pnracgfkjdiholtbqsem"), SV("tboimldpjh"), 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), SV("slcerthdaiqjfnobgkpm"), 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), SV(""), 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), SV("aqibs"), 1, S::npos);
+    test(S("rbtaqjhgkneisldpmfoc"), SV("gtfblmqinc"), 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), SV("mkqpbtdalgniorhfescj"), 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), SV(""), 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), SV("pblas"), 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), SV("arosdhcfme"), 10, 10);
+    test(S("crsplifgtqedjohnabmk"), SV("blkhjeogicatqfnpdmsr"), 10, 10);
+    test(S("niptglfbosehkamrdqcj"), SV(""), 19, S::npos);
+    test(S("copqdhstbingamjfkler"), SV("djkqc"), 19, 16);
+    test(S("mrtaefilpdsgocnhqbjk"), SV("lgokshjtpb"), 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), SV("bqjhtkfepimcnsgrlado"), 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), SV(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), SV("nocfa"), 20, 19);
+    test(S("spocfaktqdbiejlhngmr"), SV("bgtajmiedc"), 20, 18);
+    test(S("rphmlekgfscndtaobiqj"), SV("lsckfnqgdahejiopbtmr"), 20, 19);
+    test(S("liatsqdoegkmfcnbhrpj"), SV(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), SV("gfsrt"), 21, 12);
+    test(S("latkmisecnorjbfhqpdg"), SV("pfsocbhjtm"), 21, 17);
+    test(S("lecfratdjkhnsmqpoigb"), SV("tpflmdnoicjgkberhqsa"), 21, 19);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), SV(""), S::npos);
+    test(S(""), SV("laenf"), S::npos);
+    test(S(""), SV("pqlnkmbdjo"), S::npos);
+    test(S(""), SV("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), SV(""), S::npos);
+    test(S("lahfb"), SV("irkhs"), 2);
+    test(S("gmfhd"), SV("kantesmpgj"), 1);
+    test(S("odaft"), SV("oknlrstdpiqmjbaghcfe"), 4);
+    test(S("eolhfgpjqk"), SV(""), S::npos);
+    test(S("nbatdlmekr"), SV("bnrpe"), 9);
+    test(S("jdmciepkaq"), SV("jtdaefblso"), 8);
+    test(S("hkbgspoflt"), SV("oselktgbcapndfjihrmq"), 9);
+    test(S("gprdcokbnjhlsfmtieqa"), SV(""), S::npos);
+    test(S("qjghlnftcaismkropdeb"), SV("bjaht"), 19);
+    test(S("pnalfrdtkqcmojiesbhg"), SV("hjlcmgpket"), 19);
+    test(S("pniotcfrhqsmgdkjbael"), SV("htaobedqikfplcgjsmrn"), 19);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/char_size.pass.cpp
new file mode 100644
index 0000000..d7a0a9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/char_size.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find(charT c, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(c, pos));
+    assert(s.find(c, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + 1 <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(c));
+    assert(s.find(c) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + 1 <= s.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), 'c', 0, S::npos);
+    test(S(""), 'c', 1, S::npos);
+    test(S("abcde"), 'c', 0, 2);
+    test(S("abcde"), 'c', 1, 2);
+    test(S("abcde"), 'c', 2, 2);
+    test(S("abcde"), 'c', 4, S::npos);
+    test(S("abcde"), 'c', 5, S::npos);
+    test(S("abcde"), 'c', 6, S::npos);
+    test(S("abcdeabcde"), 'c', 0, 2);
+    test(S("abcdeabcde"), 'c', 1, 2);
+    test(S("abcdeabcde"), 'c', 5, 7);
+    test(S("abcdeabcde"), 'c', 9, S::npos);
+    test(S("abcdeabcde"), 'c', 10, S::npos);
+    test(S("abcdeabcde"), 'c', 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 0, 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 1, 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 10, 12);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 21, S::npos);
+
+    test(S(""), 'c', S::npos);
+    test(S("abcde"), 'c', 2);
+    test(S("abcdeabcde"), 'c', 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 2);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), 'c', 0, S::npos);
+    test(S(""), 'c', 1, S::npos);
+    test(S("abcde"), 'c', 0, 2);
+    test(S("abcde"), 'c', 1, 2);
+    test(S("abcde"), 'c', 2, 2);
+    test(S("abcde"), 'c', 4, S::npos);
+    test(S("abcde"), 'c', 5, S::npos);
+    test(S("abcde"), 'c', 6, S::npos);
+    test(S("abcdeabcde"), 'c', 0, 2);
+    test(S("abcdeabcde"), 'c', 1, 2);
+    test(S("abcdeabcde"), 'c', 5, 7);
+    test(S("abcdeabcde"), 'c', 9, S::npos);
+    test(S("abcdeabcde"), 'c', 10, S::npos);
+    test(S("abcdeabcde"), 'c', 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 0, 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 1, 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 10, 12);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 21, S::npos);
+
+    test(S(""), 'c', S::npos);
+    test(S("abcde"), 'c', 2);
+    test(S("abcdeabcde"), 'c', 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 2);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/pointer_size.pass.cpp
new file mode 100644
index 0000000..ecfb54a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/pointer_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find(const charT* s, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str, pos));
+    assert(s.find(str, pos) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type n = S::traits_type::length(str);
+        assert(pos <= x && x + n <= s.size());
+    }
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str));
+    assert(s.find(str) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type n = S::traits_type::length(str);
+        assert(0 <= x && x + n <= s.size());
+    }
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0);
+    test(S(""), "abcde", 0, S::npos);
+    test(S(""), "abcdeabcde", 0, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "abcde", 1, S::npos);
+    test(S(""), "abcdeabcde", 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 0, 0);
+    test(S("abcde"), "abcde", 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcde"), "", 1, 1);
+    test(S("abcde"), "abcde", 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 2, 2);
+    test(S("abcde"), "abcde", 2, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, S::npos);
+    test(S("abcde"), "", 4, 4);
+    test(S("abcde"), "abcde", 4, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, S::npos);
+    test(S("abcde"), "", 5, 5);
+    test(S("abcde"), "abcde", 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcde"), "", 6, S::npos);
+    test(S("abcde"), "abcde", 6, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, S::npos);
+    test(S("abcdeabcde"), "", 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcdeabcde"), "", 1, 1);
+    test(S("abcdeabcde"), "abcde", 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcdeabcde"), "", 5, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcdeabcde"), "", 9, 9);
+    test(S("abcdeabcde"), "abcde", 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, S::npos);
+    test(S("abcdeabcde"), "", 10, 10);
+    test(S("abcdeabcde"), "abcde", 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
+    test(S("abcdeabcde"), "", 11, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), "", 0);
+    test(S(""), "abcde", S::npos);
+    test(S(""), "abcdeabcde", S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcde"), "", 0);
+    test(S("abcde"), "abcde", 0);
+    test(S("abcde"), "abcdeabcde", S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcde"), "", 0);
+    test(S("abcdeabcde"), "abcde", 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/pointer_size_size.pass.cpp
new file mode 100644
index 0000000..98b09ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/pointer_size_size.pass.cpp
@@ -0,0 +1,399 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find(const charT* s, size_type pos, size_type n) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str, pos, n));
+    assert(s.find(str, pos, n) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + n <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0, 0);
+    test(S(""), "abcde", 0, 0, 0);
+    test(S(""), "abcde", 0, 1, S::npos);
+    test(S(""), "abcde", 0, 2, S::npos);
+    test(S(""), "abcde", 0, 4, S::npos);
+    test(S(""), "abcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 9, S::npos);
+    test(S(""), "abcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "abcde", 1, 0, S::npos);
+    test(S(""), "abcde", 1, 1, S::npos);
+    test(S(""), "abcde", 1, 2, S::npos);
+    test(S(""), "abcde", 1, 4, S::npos);
+    test(S(""), "abcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 0, S::npos);
+    test(S(""), "abcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 9, S::npos);
+    test(S(""), "abcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 0, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 1, 0);
+    test(S("abcde"), "abcde", 0, 2, 0);
+    test(S("abcde"), "abcde", 0, 4, 0);
+    test(S("abcde"), "abcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcde"), "", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 1, S::npos);
+    test(S("abcde"), "abcde", 1, 2, S::npos);
+    test(S("abcde"), "abcde", 1, 4, S::npos);
+    test(S("abcde"), "abcde", 1, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcde", 1, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 1, S::npos);
+    test(S("abcde"), "abcde", 2, 2, S::npos);
+    test(S("abcde"), "abcde", 2, 4, S::npos);
+    test(S("abcde"), "abcde", 2, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcde", 2, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 20, S::npos);
+    test(S("abcde"), "", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 1, S::npos);
+    test(S("abcde"), "abcde", 4, 2, S::npos);
+    test(S("abcde"), "abcde", 4, 4, S::npos);
+    test(S("abcde"), "abcde", 4, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcde", 4, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 20, S::npos);
+    test(S("abcde"), "", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 1, S::npos);
+    test(S("abcde"), "abcde", 5, 2, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("abcde"), "abcde", 5, 4, S::npos);
+    test(S("abcde"), "abcde", 5, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcde", 5, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcde"), "", 6, 0, S::npos);
+    test(S("abcde"), "abcde", 6, 0, S::npos);
+    test(S("abcde"), "abcde", 6, 1, S::npos);
+    test(S("abcde"), "abcde", 6, 2, S::npos);
+    test(S("abcde"), "abcde", 6, 4, S::npos);
+    test(S("abcde"), "abcde", 6, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 0, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 0, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 20, S::npos);
+    test(S("abcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 1, 5);
+    test(S("abcdeabcde"), "abcde", 1, 2, 5);
+    test(S("abcdeabcde"), "abcde", 1, 4, 5);
+    test(S("abcdeabcde"), "abcde", 1, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcdeabcde"), "", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcde", 5, 2, 5);
+    test(S("abcdeabcde"), "abcde", 5, 4, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcdeabcde"), "", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 1, S::npos);
+    test(S("abcdeabcde"), "abcde", 9, 2, S::npos);
+    test(S("abcdeabcde"), "abcde", 9, 4, S::npos);
+    test(S("abcdeabcde"), "abcde", 9, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 20, S::npos);
+    test(S("abcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 1, S::npos);
+    test(S("abcdeabcde"), "abcde", 10, 2, S::npos);
+    test(S("abcdeabcde"), "abcde", 10, 4, S::npos);
+    test(S("abcdeabcde"), "abcde", 10, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 1, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("abcdeabcde"), "abcdeabcde", 10, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, S::npos);
+    test(S("abcdeabcde"), "", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 1, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 2, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 4, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 2, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 4, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 5, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 5, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 9, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 10, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 2, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 4, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 2, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 4, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 9, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 2, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 4, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 9, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0, 20);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 2, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 4, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 9, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 20, S::npos);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/string_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/string_size.pass.cpp
new file mode 100644
index 0000000..af0fdd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/string_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find(const basic_string& str, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str, pos));
+    assert(s.find(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + str.size() <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str));
+    assert(s.find(str) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + str.size() <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), S(""), 0, 0);
+    test(S(""), S("abcde"), 0, S::npos);
+    test(S(""), S("abcdeabcde"), 0, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("abcde"), 1, S::npos);
+    test(S(""), S("abcdeabcde"), 1, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 0, 0);
+    test(S("abcde"), S("abcde"), 0, 0);
+    test(S("abcde"), S("abcdeabcde"), 0, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcde"), S(""), 1, 1);
+    test(S("abcde"), S("abcde"), 1, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 1, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 2, 2);
+    test(S("abcde"), S("abcde"), 2, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 2, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos);
+    test(S("abcde"), S(""), 4, 4);
+    test(S("abcde"), S("abcde"), 4, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 4, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos);
+    test(S("abcde"), S(""), 5, 5);
+    test(S("abcde"), S("abcde"), 5, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 5, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcde"), S(""), 6, S::npos);
+    test(S("abcde"), S("abcde"), 6, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 6, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos);
+    test(S("abcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcde"), S("abcde"), 1, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), S(""), 5, 5);
+    test(S("abcdeabcde"), S("abcde"), 5, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), S(""), 9, 9);
+    test(S("abcdeabcde"), S("abcde"), 9, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcde"), S("abcde"), 10, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), S(""), 11, S::npos);
+    test(S("abcdeabcde"), S("abcde"), 11, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcde"), 11, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, S::npos);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), S(""), 0);
+    test(S(""), S("abcde"), S::npos);
+    test(S(""), S("abcdeabcde"), S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcde"), S(""), 0);
+    test(S("abcde"), S("abcde"), 0);
+    test(S("abcde"), S("abcdeabcde"), S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcde"), S(""), 0);
+    test(S("abcdeabcde"), S("abcde"), 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.find({"abc", 1}) == std::string::npos);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/string_view_size.pass.cpp
new file mode 100644
index 0000000..a32a156
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_find/string_view_size.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type find(basic_string_view sv, size_type pos = 0) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(sv, pos));
+    assert(s.find(sv, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + sv.size() <= s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(sv));
+    assert(s.find(sv) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + sv.size() <= s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), SV(""), 0, 0);
+    test(S(""), SV("abcde"), 0, S::npos);
+    test(S(""), SV("abcdeabcde"), 0, S::npos);
+    test(S(""), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S(""), SV(""), 1, S::npos);
+    test(S(""), SV("abcde"), 1, S::npos);
+    test(S(""), SV("abcdeabcde"), 1, S::npos);
+    test(S(""), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), SV(""), 0, 0);
+    test(S("abcde"), SV("abcde"), 0, 0);
+    test(S("abcde"), SV("abcdeabcde"), 0, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcde"), SV(""), 1, 1);
+    test(S("abcde"), SV("abcde"), 1, S::npos);
+    test(S("abcde"), SV("abcdeabcde"), 1, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), SV(""), 2, 2);
+    test(S("abcde"), SV("abcde"), 2, S::npos);
+    test(S("abcde"), SV("abcdeabcde"), 2, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 2, S::npos);
+    test(S("abcde"), SV(""), 4, 4);
+    test(S("abcde"), SV("abcde"), 4, S::npos);
+    test(S("abcde"), SV("abcdeabcde"), 4, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 4, S::npos);
+    test(S("abcde"), SV(""), 5, 5);
+    test(S("abcde"), SV("abcde"), 5, S::npos);
+    test(S("abcde"), SV("abcdeabcde"), 5, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcde"), SV(""), 6, S::npos);
+    test(S("abcde"), SV("abcde"), 6, S::npos);
+    test(S("abcde"), SV("abcdeabcde"), 6, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 6, S::npos);
+    test(S("abcdeabcde"), SV(""), 0, 0);
+    test(S("abcdeabcde"), SV("abcde"), 0, 0);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 0, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcdeabcde"), SV(""), 1, 1);
+    test(S("abcdeabcde"), SV("abcde"), 1, 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), SV(""), 5, 5);
+    test(S("abcdeabcde"), SV("abcde"), 5, 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), SV(""), 9, 9);
+    test(S("abcdeabcde"), SV("abcde"), 9, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), SV(""), 10, 10);
+    test(S("abcdeabcde"), SV("abcde"), 10, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), SV(""), 11, S::npos);
+    test(S("abcdeabcde"), SV("abcde"), 11, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 11, S::npos);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 21, S::npos);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), SV(""), 0);
+    test(S(""), SV("abcde"), S::npos);
+    test(S(""), SV("abcdeabcde"), S::npos);
+    test(S(""), SV("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcde"), SV(""), 0);
+    test(S("abcde"), SV("abcde"), 0);
+    test(S("abcde"), SV("abcdeabcde"), S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcde"), SV(""), 0);
+    test(S("abcdeabcde"), SV("abcde"), 0);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/char_size.pass.cpp
new file mode 100644
index 0000000..b83fab0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/char_size.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type rfind(charT c, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(c, pos));
+    assert(s.rfind(c, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + 1 <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(c));
+    assert(s.rfind(c) == x);
+    if (x != S::npos)
+        assert(x + 1 <= s.size());
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test(S(""), 'b', 0, S::npos);
+    test(S(""), 'b', 1, S::npos);
+    test(S("abcde"), 'b', 0, S::npos);
+    test(S("abcde"), 'b', 1, 1);
+    test(S("abcde"), 'b', 2, 1);
+    test(S("abcde"), 'b', 4, 1);
+    test(S("abcde"), 'b', 5, 1);
+    test(S("abcde"), 'b', 6, 1);
+    test(S("abcdeabcde"), 'b', 0, S::npos);
+    test(S("abcdeabcde"), 'b', 1, 1);
+    test(S("abcdeabcde"), 'b', 5, 1);
+    test(S("abcdeabcde"), 'b', 9, 6);
+    test(S("abcdeabcde"), 'b', 10, 6);
+    test(S("abcdeabcde"), 'b', 11, 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 10, 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 19, 16);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 20, 16);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 21, 16);
+
+    test(S(""), 'b', S::npos);
+    test(S("abcde"), 'b', 1);
+    test(S("abcdeabcde"), 'b', 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 16);
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test(S(""), 'b', 0, S::npos);
+    test(S(""), 'b', 1, S::npos);
+    test(S("abcde"), 'b', 0, S::npos);
+    test(S("abcde"), 'b', 1, 1);
+    test(S("abcde"), 'b', 2, 1);
+    test(S("abcde"), 'b', 4, 1);
+    test(S("abcde"), 'b', 5, 1);
+    test(S("abcde"), 'b', 6, 1);
+    test(S("abcdeabcde"), 'b', 0, S::npos);
+    test(S("abcdeabcde"), 'b', 1, 1);
+    test(S("abcdeabcde"), 'b', 5, 1);
+    test(S("abcdeabcde"), 'b', 9, 6);
+    test(S("abcdeabcde"), 'b', 10, 6);
+    test(S("abcdeabcde"), 'b', 11, 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 10, 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 19, 16);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 20, 16);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 21, 16);
+
+    test(S(""), 'b', S::npos);
+    test(S("abcde"), 'b', 1);
+    test(S("abcdeabcde"), 'b', 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 16);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/pointer_size.pass.cpp
new file mode 100644
index 0000000..e44e02e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/pointer_size.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type rfind(const charT* s, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos));
+    assert(s.rfind(str, pos) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type n = S::traits_type::length(str);
+        assert(x <= pos && x + n <= s.size());
+    }
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str));
+    assert(s.rfind(str) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type pos = s.size();
+        typename S::size_type n = S::traits_type::length(str);
+        assert(x <= pos && x + n <= s.size());
+    }
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0);
+    test(S(""), "abcde", 0, S::npos);
+    test(S(""), "abcdeabcde", 0, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S(""), "", 1, 0);
+    test(S(""), "abcde", 1, S::npos);
+    test(S(""), "abcdeabcde", 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 0, 0);
+    test(S("abcde"), "abcde", 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcde"), "", 1, 1);
+    test(S("abcde"), "abcde", 1, 0);
+    test(S("abcde"), "abcdeabcde", 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 2, 2);
+    test(S("abcde"), "abcde", 2, 0);
+    test(S("abcde"), "abcdeabcde", 2, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, S::npos);
+    test(S("abcde"), "", 4, 4);
+    test(S("abcde"), "abcde", 4, 0);
+    test(S("abcde"), "abcdeabcde", 4, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, S::npos);
+    test(S("abcde"), "", 5, 5);
+    test(S("abcde"), "abcde", 5, 0);
+    test(S("abcde"), "abcdeabcde", 5, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcde"), "", 6, 5);
+    test(S("abcde"), "abcde", 6, 0);
+    test(S("abcde"), "abcdeabcde", 6, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, S::npos);
+    test(S("abcdeabcde"), "", 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcdeabcde"), "", 1, 1);
+    test(S("abcdeabcde"), "abcde", 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcdeabcde"), "", 5, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcdeabcde"), "", 9, 9);
+    test(S("abcdeabcde"), "abcde", 9, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, S::npos);
+    test(S("abcdeabcde"), "", 10, 10);
+    test(S("abcdeabcde"), "abcde", 10, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
+    test(S("abcdeabcde"), "", 11, 10);
+    test(S("abcdeabcde"), "abcde", 11, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), "", 0);
+    test(S(""), "abcde", S::npos);
+    test(S(""), "abcdeabcde", S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcde"), "", 5);
+    test(S("abcde"), "abcde", 0);
+    test(S("abcde"), "abcdeabcde", S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcde"), "", 10);
+    test(S("abcdeabcde"), "abcde", 5);
+    test(S("abcdeabcde"), "abcdeabcde", 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/pointer_size_size.pass.cpp
new file mode 100644
index 0000000..1e40fbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/pointer_size_size.pass.cpp
@@ -0,0 +1,399 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type rfind(const charT* s, size_type pos, size_type n) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+      typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos, n));
+    assert(s.rfind(str, pos, n) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + n <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), "", 0, 0, 0);
+    test(S(""), "abcde", 0, 0, 0);
+    test(S(""), "abcde", 0, 1, S::npos);
+    test(S(""), "abcde", 0, 2, S::npos);
+    test(S(""), "abcde", 0, 4, S::npos);
+    test(S(""), "abcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 9, S::npos);
+    test(S(""), "abcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S(""), "", 1, 0, 0);
+    test(S(""), "abcde", 1, 0, 0);
+    test(S(""), "abcde", 1, 1, S::npos);
+    test(S(""), "abcde", 1, 2, S::npos);
+    test(S(""), "abcde", 1, 4, S::npos);
+    test(S(""), "abcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 0, 0);
+    test(S(""), "abcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 9, S::npos);
+    test(S(""), "abcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 0, 0);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 1, 0);
+    test(S("abcde"), "abcde", 0, 2, 0);
+    test(S("abcde"), "abcde", 0, 4, 0);
+    test(S("abcde"), "abcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcde"), "", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 1, 0);
+    test(S("abcde"), "abcde", 1, 2, 0);
+    test(S("abcde"), "abcde", 1, 4, 0);
+    test(S("abcde"), "abcde", 1, 5, 0);
+    test(S("abcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcde", 1, 1, 0);
+    test(S("abcde"), "abcdeabcde", 1, 5, 0);
+    test(S("abcde"), "abcdeabcde", 1, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 1, 0);
+    test(S("abcde"), "abcde", 2, 2, 0);
+    test(S("abcde"), "abcde", 2, 4, 0);
+    test(S("abcde"), "abcde", 2, 5, 0);
+    test(S("abcde"), "abcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcde", 2, 1, 0);
+    test(S("abcde"), "abcdeabcde", 2, 5, 0);
+    test(S("abcde"), "abcdeabcde", 2, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 20, S::npos);
+    test(S("abcde"), "", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 1, 0);
+    test(S("abcde"), "abcde", 4, 2, 0);
+    test(S("abcde"), "abcde", 4, 4, 0);
+    test(S("abcde"), "abcde", 4, 5, 0);
+    test(S("abcde"), "abcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcde", 4, 1, 0);
+    test(S("abcde"), "abcdeabcde", 4, 5, 0);
+    test(S("abcde"), "abcdeabcde", 4, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 20, S::npos);
+    test(S("abcde"), "", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 1, 0);
+    test(S("abcde"), "abcde", 5, 2, 0);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S("abcde"), "abcde", 5, 4, 0);
+    test(S("abcde"), "abcde", 5, 5, 0);
+    test(S("abcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcde", 5, 1, 0);
+    test(S("abcde"), "abcdeabcde", 5, 5, 0);
+    test(S("abcde"), "abcdeabcde", 5, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcde"), "", 6, 0, 5);
+    test(S("abcde"), "abcde", 6, 0, 5);
+    test(S("abcde"), "abcde", 6, 1, 0);
+    test(S("abcde"), "abcde", 6, 2, 0);
+    test(S("abcde"), "abcde", 6, 4, 0);
+    test(S("abcde"), "abcde", 6, 5, 0);
+    test(S("abcde"), "abcdeabcde", 6, 0, 5);
+    test(S("abcde"), "abcdeabcde", 6, 1, 0);
+    test(S("abcde"), "abcdeabcde", 6, 5, 0);
+    test(S("abcde"), "abcdeabcde", 6, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 0, 5);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 20, S::npos);
+    test(S("abcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 1, 0);
+    test(S("abcdeabcde"), "abcde", 1, 2, 0);
+    test(S("abcdeabcde"), "abcde", 1, 4, 0);
+    test(S("abcdeabcde"), "abcde", 1, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcdeabcde"), "", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcde", 5, 2, 5);
+    test(S("abcdeabcde"), "abcde", 5, 4, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcdeabcde"), "", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 1, 5);
+    test(S("abcdeabcde"), "abcde", 9, 2, 5);
+    test(S("abcdeabcde"), "abcde", 9, 4, 5);
+    test(S("abcdeabcde"), "abcde", 9, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 20, S::npos);
+    test(S("abcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 1, 5);
+    test(S("abcdeabcde"), "abcde", 10, 2, 5);
+    test(S("abcdeabcde"), "abcde", 10, 4, 5);
+    test(S("abcdeabcde"), "abcde", 10, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 1, 5);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test2()
+{
+    test(S("abcdeabcde"), "abcdeabcde", 10, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, S::npos);
+    test(S("abcdeabcde"), "", 11, 0, 10);
+    test(S("abcdeabcde"), "abcde", 11, 0, 10);
+    test(S("abcdeabcde"), "abcde", 11, 1, 5);
+    test(S("abcdeabcde"), "abcde", 11, 2, 5);
+    test(S("abcdeabcde"), "abcde", 11, 4, 5);
+    test(S("abcdeabcde"), "abcde", 11, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 2, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 4, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 9, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 2, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 4, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 2, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 4, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 2, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 4, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0, 20);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test3()
+{
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 2, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 4, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 20, 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/string_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/string_size.pass.cpp
new file mode 100644
index 0000000..45d8a24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/string_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type rfind(const basic_string& str, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos));
+    assert(s.rfind(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + str.size() <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str));
+    assert(s.rfind(str) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + str.size() <= s.size());
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), S(""), 0, 0);
+    test(S(""), S("abcde"), 0, S::npos);
+    test(S(""), S("abcdeabcde"), 0, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S(""), S(""), 1, 0);
+    test(S(""), S("abcde"), 1, S::npos);
+    test(S(""), S("abcdeabcde"), 1, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 0, 0);
+    test(S("abcde"), S("abcde"), 0, 0);
+    test(S("abcde"), S("abcdeabcde"), 0, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcde"), S(""), 1, 1);
+    test(S("abcde"), S("abcde"), 1, 0);
+    test(S("abcde"), S("abcdeabcde"), 1, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 2, 2);
+    test(S("abcde"), S("abcde"), 2, 0);
+    test(S("abcde"), S("abcdeabcde"), 2, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos);
+    test(S("abcde"), S(""), 4, 4);
+    test(S("abcde"), S("abcde"), 4, 0);
+    test(S("abcde"), S("abcdeabcde"), 4, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos);
+    test(S("abcde"), S(""), 5, 5);
+    test(S("abcde"), S("abcde"), 5, 0);
+    test(S("abcde"), S("abcdeabcde"), 5, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcde"), S(""), 6, 5);
+    test(S("abcde"), S("abcde"), 6, 0);
+    test(S("abcde"), S("abcdeabcde"), 6, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos);
+    test(S("abcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcde"), S("abcde"), 1, 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 1, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), S(""), 5, 5);
+    test(S("abcdeabcde"), S("abcde"), 5, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 5, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), S(""), 9, 9);
+    test(S("abcdeabcde"), S("abcde"), 9, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 9, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcde"), S("abcde"), 10, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 10, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), S(""), 11, 10);
+    test(S("abcdeabcde"), S("abcde"), 11, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 11, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 21, 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, 0);
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), S(""), 0);
+    test(S(""), S("abcde"), S::npos);
+    test(S(""), S("abcdeabcde"), S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcde"), S(""), 5);
+    test(S("abcde"), S("abcde"), 0);
+    test(S("abcde"), S("abcdeabcde"), S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcde"), S(""), 10);
+    test(S("abcdeabcde"), S("abcde"), 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test0<S>();
+    test1<S>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    test0<S>();
+    test1<S>();
+  }
+#endif
+
+#if TEST_STD_VER >= 11
+  { // LWG 2946
+    std::string s = " !";
+    assert(s.rfind({"abc", 1}) == std::string::npos);
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/string_view_size.pass.cpp
new file mode 100644
index 0000000..bbb5e29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_rfind/string_view_size.pass.cpp
@@ -0,0 +1,172 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// size_type rfind(basic_string_view sv, size_type pos = npos) const; // constexpr since C++20
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(sv, pos));
+    assert(s.rfind(sv, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + sv.size() <= s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, SV sv, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(sv));
+    assert(s.rfind(sv) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + sv.size() <= s.size());
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test0()
+{
+    test(S(""), SV(""), 0, 0);
+    test(S(""), SV("abcde"), 0, S::npos);
+    test(S(""), SV("abcdeabcde"), 0, S::npos);
+    test(S(""), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S(""), SV(""), 1, 0);
+    test(S(""), SV("abcde"), 1, S::npos);
+    test(S(""), SV("abcdeabcde"), 1, S::npos);
+    test(S(""), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), SV(""), 0, 0);
+    test(S("abcde"), SV("abcde"), 0, 0);
+    test(S("abcde"), SV("abcdeabcde"), 0, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcde"), SV(""), 1, 1);
+    test(S("abcde"), SV("abcde"), 1, 0);
+    test(S("abcde"), SV("abcdeabcde"), 1, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), SV(""), 2, 2);
+    test(S("abcde"), SV("abcde"), 2, 0);
+    test(S("abcde"), SV("abcdeabcde"), 2, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 2, S::npos);
+    test(S("abcde"), SV(""), 4, 4);
+    test(S("abcde"), SV("abcde"), 4, 0);
+    test(S("abcde"), SV("abcdeabcde"), 4, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 4, S::npos);
+    test(S("abcde"), SV(""), 5, 5);
+    test(S("abcde"), SV("abcde"), 5, 0);
+    test(S("abcde"), SV("abcdeabcde"), 5, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcde"), SV(""), 6, 5);
+    test(S("abcde"), SV("abcde"), 6, 0);
+    test(S("abcde"), SV("abcdeabcde"), 6, S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), 6, S::npos);
+    test(S("abcdeabcde"), SV(""), 0, 0);
+    test(S("abcdeabcde"), SV("abcde"), 0, 0);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 0, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcdeabcde"), SV(""), 1, 1);
+    test(S("abcdeabcde"), SV("abcde"), 1, 0);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 1, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), SV(""), 5, 5);
+    test(S("abcdeabcde"), SV("abcde"), 5, 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 5, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), SV(""), 9, 9);
+    test(S("abcdeabcde"), SV("abcde"), 9, 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 9, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), SV(""), 10, 10);
+    test(S("abcdeabcde"), SV("abcde"), 10, 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 10, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), SV(""), 11, 10);
+    test(S("abcdeabcde"), SV("abcde"), 11, 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 11, 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 19, 15);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 19, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 20, 15);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 20, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 21, 20);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 21, 15);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 21, 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 21, 0);
+}
+
+template <class S, class SV>
+TEST_CONSTEXPR_CXX20 void test1()
+{
+    test(S(""), SV(""), 0);
+    test(S(""), SV("abcde"), S::npos);
+    test(S(""), SV("abcdeabcde"), S::npos);
+    test(S(""), SV("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcde"), SV(""), 5);
+    test(S("abcde"), SV("abcde"), 0);
+    test(S("abcde"), SV("abcdeabcde"), S::npos);
+    test(S("abcde"), SV("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcde"), SV(""), 10);
+    test(S("abcdeabcde"), SV("abcde"), 5);
+    test(S("abcdeabcde"), SV("abcdeabcde"), 0);
+    test(S("abcdeabcde"), SV("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcdeabcdeabcde"), SV(""), 20);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcde"), 15);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcde"), 10);
+    test(S("abcdeabcdeabcdeabcde"), SV("abcdeabcdeabcdeabcde"), 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
+    typedef std::string_view SV;
+    test0<S, SV>();
+    test1<S, SV>();
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_substr/substr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_substr/substr.pass.cpp
new file mode 100644
index 0000000..917bb0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_substr/substr.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// basic_string substr(size_type pos = 0, size_type n = npos) const; // constexpr since C++20, removed in C++23
+// basic_string substr(size_type pos = 0, size_type n = npos) const&; // since in C++23
+
+#include <string>
+#include <stdexcept>
+#include <algorithm>
+#include <cassert>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+#include "min_allocator.h"
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void
+test(const S& s, typename S::size_type pos, typename S::size_type n)
+{
+    if (pos <= s.size())
+    {
+        S str = s.substr(pos, n);
+        LIBCPP_ASSERT(str.__invariants());
+        assert(pos <= s.size());
+        typename S::size_type rlen = std::min(n, s.size() - pos);
+        assert(str.size() == rlen);
+        assert(S::traits_type::compare(s.data()+pos, str.data(), rlen) == 0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    else if (!TEST_IS_CONSTANT_EVALUATED)
+    {
+        try
+        {
+            S str = s.substr(pos, n);
+            assert(false);
+        }
+        catch (std::out_of_range&)
+        {
+            assert(pos > s.size());
+        }
+    }
+#endif
+}
+
+template <class S>
+TEST_CONSTEXPR_CXX20 void test_string() {
+  test(S(""), 0, 0);
+  test(S(""), 1, 0);
+  test(S("pniot"), 0, 0);
+  test(S("htaob"), 0, 1);
+  test(S("fodgq"), 0, 2);
+  test(S("hpqia"), 0, 4);
+  test(S("qanej"), 0, 5);
+  test(S("dfkap"), 1, 0);
+  test(S("clbao"), 1, 1);
+  test(S("ihqrf"), 1, 2);
+  test(S("mekdn"), 1, 3);
+  test(S("ngtjf"), 1, 4);
+  test(S("srdfq"), 2, 0);
+  test(S("qkdrs"), 2, 1);
+  test(S("ikcrq"), 2, 2);
+  test(S("cdaih"), 2, 3);
+  test(S("dmajb"), 4, 0);
+  test(S("karth"), 4, 1);
+  test(S("lhcdo"), 5, 0);
+  test(S("acbsj"), 6, 0);
+  test(S("pbsjikaole"), 0, 0);
+  test(S("pcbahntsje"), 0, 1);
+  test(S("mprdjbeiak"), 0, 5);
+  test(S("fhepcrntko"), 0, 9);
+  test(S("eqmpaidtls"), 0, 10);
+  test(S("joidhalcmq"), 1, 0);
+  test(S("omigsphflj"), 1, 1);
+  test(S("kocgbphfji"), 1, 4);
+  test(S("onmjekafbi"), 1, 8);
+  test(S("fbslrjiqkm"), 1, 9);
+  test(S("oqmrjahnkg"), 5, 0);
+  test(S("jeidpcmalh"), 5, 1);
+  test(S("schfalibje"), 5, 2);
+  test(S("crliponbqe"), 5, 4);
+  test(S("igdscopqtm"), 5, 5);
+  test(S("qngpdkimlc"), 9, 0);
+  test(S("thdjgafrlb"), 9, 1);
+  test(S("hcjitbfapl"), 10, 0);
+  test(S("mgojkldsqh"), 11, 0);
+  test(S("gfshlcmdjreqipbontak"), 0, 0);
+  test(S("nadkhpfemgclosibtjrq"), 0, 1);
+  test(S("nkodajteqplrbifhmcgs"), 0, 10);
+  test(S("ofdrqmkeblthacpgijsn"), 0, 19);
+  test(S("gbmetiprqdoasckjfhln"), 0, 20);
+  test(S("bdfjqgatlksriohemnpc"), 1, 0);
+  test(S("crnklpmegdqfiashtojb"), 1, 1);
+  test(S("ejqcnahdrkfsmptilgbo"), 1, 9);
+  test(S("jsbtafedocnirgpmkhql"), 1, 18);
+  test(S("prqgnlbaejsmkhdctoif"), 1, 19);
+  test(S("qnmodrtkebhpasifgcjl"), 10, 0);
+  test(S("pejafmnokrqhtisbcdgl"), 10, 1);
+  test(S("cpebqsfmnjdolhkratgi"), 10, 5);
+  test(S("odnqkgijrhabfmcestlp"), 10, 9);
+  test(S("lmofqdhpkibagnrcjste"), 10, 10);
+  test(S("lgjqketopbfahrmnsicd"), 19, 0);
+  test(S("ktsrmnqagdecfhijpobl"), 19, 1);
+  test(S("lsaijeqhtrbgcdmpfkno"), 20, 0);
+  test(S("dplqartnfgejichmoskb"), 21, 0);
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_string<std::string>();
+#if TEST_STD_VER >= 11
+  test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
+#endif
+
+  return true;
+}
+
+TEST_CONSTEXPR_CXX20 bool test_alloc() {
+  {
+    using alloc  = test_allocator<char>;
+    using string = std::basic_string<char, std::char_traits<char>, alloc>;
+    test_allocator_statistics stats;
+    {
+      string str = string(alloc(&stats));
+      stats = test_allocator_statistics();
+      (void)str.substr();
+      assert(stats.moved == 0);
+      assert(stats.copied == 0);
+    }
+    {
+      string str = string(alloc(&stats));
+      stats = test_allocator_statistics();
+      (void)std::move(str).substr();
+      assert(stats.moved == 0);
+      assert(stats.copied == 0);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  test_alloc();
+#if TEST_STD_VER > 17
+  static_assert(test());
+  static_assert(test_alloc());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_substr/substr_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_substr/substr_rvalue.pass.cpp
new file mode 100644
index 0000000..c3c6c3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.ops/string_substr/substr_rvalue.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string>
+
+// constexpr basic_string substr(size_type pos = 0, size_type n = npos) &&;
+
+#include <algorithm>
+#include <stdexcept>
+#include <string>
+
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+
+#define STR(string) MAKE_CSTRING(typename S::value_type, string)
+
+constexpr struct should_throw_exception_t {
+} should_throw_exception;
+
+template <class S>
+constexpr void test(S orig, typename S::size_type pos, typename S::size_type n, const S expected) {
+  S str = std::move(orig).substr(pos, n);
+  LIBCPP_ASSERT(orig.__invariants());
+  LIBCPP_ASSERT(str.__invariants());
+  assert(str == expected);
+}
+
+template <class S>
+constexpr void test(S orig, typename S::size_type pos, typename S::size_type n, should_throw_exception_t) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!std::is_constant_evaluated()) {
+    try {
+      S str = std::move(orig).substr(pos, n);
+      assert(false);
+    } catch (const std::out_of_range&) {
+    }
+  }
+#else
+  (void)orig;
+  (void)pos;
+  (void)n;
+#endif
+}
+
+template <class S>
+constexpr void test_string() {
+  test<S>(STR(""), 0, 0, STR(""));
+  test<S>(STR(""), 0, 1, STR(""));
+  test<S>(STR(""), 1, 0, should_throw_exception);
+  test<S>(STR(""), 1, 1, should_throw_exception);
+  test<S>(STR("short string"), 0, 1, STR("s"));
+  test<S>(STR("short string"), 5, 5, STR(" stri"));
+  test<S>(STR("short string"), 12, 5, STR(""));
+  test<S>(STR("short string"), 13, 5, should_throw_exception);
+  test<S>(STR("long long string so no SSO"), 0, 0, STR(""));
+  test<S>(STR("long long string so no SSO"), 0, 10, STR("long long "));
+  test<S>(STR("long long string so no SSO"), 10, 10, STR("string so "));
+  test<S>(STR("long long string so no SSO"), 20, 10, STR("no SSO"));
+  test<S>(STR("long long string so no SSO"), 26, 10, STR(""));
+  test<S>(STR("long long string so no SSO"), 27, 0, should_throw_exception);
+}
+
+template <class CharT, class CharTraits>
+constexpr void test_allocators() {
+  test_string<std::basic_string<CharT, CharTraits, std::allocator<CharT>>>();
+  test_string<std::basic_string<CharT, CharTraits, min_allocator<CharT>>>();
+  test_string<std::basic_string<CharT, CharTraits, test_allocator<CharT>>>();
+}
+
+template <class CharT>
+constexpr void test_char_traits() {
+  test_allocators<CharT, std::char_traits<CharT>>();
+  test_allocators<CharT, constexpr_char_traits<CharT>>();
+}
+
+constexpr bool test() {
+  test_char_traits<char>();
+  test_char_traits<char16_t>();
+  test_char_traits<char32_t>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_char_traits<wchar_t>();
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test_char_traits<char8_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.require/contiguous.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.require/contiguous.pass.cpp
new file mode 100644
index 0000000..f7087fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.require/contiguous.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <array>
+
+// An string is a contiguous container
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+
+template <class C>
+TEST_CONSTEXPR_CXX20 void test_contiguous ( const C &c )
+{
+    for ( size_t i = 0; i < c.size(); ++i )
+        assert ( *(c.begin() + static_cast<typename C::difference_type>(i)) == *(std::addressof(*c.begin()) + i));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::string S;
+    test_contiguous(S());
+    test_contiguous(S("1"));
+    test_contiguous(S("1234567890123456789012345678901234567890123456789012345678901234567890"));
+  }
+
+  {
+    typedef test_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test_contiguous(S(A(3)));
+    test_contiguous(S("1", A(5)));
+    test_contiguous(S("1234567890123456789012345678901234567890123456789012345678901234567890", A(7)));
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef min_allocator<char> A;
+    typedef std::basic_string<char, std::char_traits<char>, A> S;
+    test_contiguous(S(A{}));
+    test_contiguous(S("1", A()));
+    test_contiguous(S("1234567890123456789012345678901234567890123456789012345678901234567890", A()));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.char.pass.cpp
new file mode 100644
index 0000000..a3ad1fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.char.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// constexpr bool starts_with(charT x) const noexcept;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    typedef std::string S;
+    S  s1 {};
+    S  s2 { "abcde", 5 };
+
+    ASSERT_NOEXCEPT(s1.starts_with('e'));
+
+    assert (!s1.starts_with('a'));
+    assert (!s1.starts_with('x'));
+    assert ( s2.starts_with('a'));
+    assert (!s2.starts_with('x'));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.ptr.pass.cpp
new file mode 100644
index 0000000..5032035
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.ptr.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// constexpr bool starts_with(const CharT *x) const;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  {
+    typedef std::string S;
+    const char *s = "abcde";
+    S  s0 {};
+    S  s1 { s, 1 };
+    S  s2 { s, 2 };
+//     S  s3 { s, 3 };
+//     S  s4 { s, 4 };
+//     S  s5 { s, 5 };
+    S  sNot {"def", 3 };
+
+    LIBCPP_ASSERT_NOEXCEPT(s0.starts_with(""));
+
+    assert ( s0.starts_with(""));
+    assert (!s0.starts_with("a"));
+
+    assert ( s1.starts_with(""));
+    assert ( s1.starts_with("a"));
+    assert (!s1.starts_with("ab"));
+    assert (!s1.starts_with("abc"));
+    assert (!s1.starts_with("abcd"));
+    assert (!s1.starts_with("abcde"));
+    assert (!s1.starts_with("def"));
+
+    assert ( s2.starts_with(""));
+    assert ( s2.starts_with("a"));
+    assert ( s2.starts_with("ab"));
+    assert (!s2.starts_with("abc"));
+    assert (!s2.starts_with("abcd"));
+    assert (!s2.starts_with("abcde"));
+    assert (!s2.starts_with("def"));
+
+    assert ( sNot.starts_with(""));
+    assert (!sNot.starts_with("a"));
+    assert (!sNot.starts_with("ab"));
+    assert (!sNot.starts_with("abc"));
+    assert (!sNot.starts_with("abcd"));
+    assert (!sNot.starts_with("abcde"));
+    assert ( sNot.starts_with("def"));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.string_view.pass.cpp
new file mode 100644
index 0000000..c0734d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/string.starts_with/starts_with.string_view.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// constexpr bool starts_with(string_view x) const noexcept;
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+    typedef std::string S;
+    typedef std::string_view SV;
+    const char *s = "abcde";
+
+    S   s0;
+    S   s1  { s, 1 };
+    S   s2  { s, 2 };
+//  S   s3  { s, 3 };
+//  S   s4  { s, 4 };
+//  S   s5  { s, 5 };
+    S  sNot { "def", 3 };
+
+    SV  sv0;
+    SV  sv1 { s, 1 };
+    SV  sv2 { s, 2 };
+    SV  sv3 { s, 3 };
+    SV  sv4 { s, 4 };
+    SV  sv5 { s, 5 };
+    SV svNot {"def", 3 };
+
+    ASSERT_NOEXCEPT(s0.starts_with(sv0));
+
+    assert ( s0.starts_with(sv0));
+    assert (!s0.starts_with(sv1));
+
+    assert ( s1.starts_with(sv0));
+    assert ( s1.starts_with(sv1));
+    assert (!s1.starts_with(sv2));
+    assert (!s1.starts_with(sv3));
+    assert (!s1.starts_with(sv4));
+    assert (!s1.starts_with(sv5));
+    assert (!s1.starts_with(svNot));
+
+    assert ( s2.starts_with(sv0));
+    assert ( s2.starts_with(sv1));
+    assert ( s2.starts_with(sv2));
+    assert (!s2.starts_with(sv3));
+    assert (!s2.starts_with(sv4));
+    assert (!s2.starts_with(sv5));
+    assert (!s2.starts_with(svNot));
+
+    assert ( sNot.starts_with(sv0));
+    assert (!sNot.starts_with(sv1));
+    assert (!sNot.starts_with(sv2));
+    assert (!sNot.starts_with(sv3));
+    assert (!sNot.starts_with(sv4));
+    assert (!sNot.starts_with(sv5));
+    assert ( sNot.starts_with(svNot));
+
+    return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/test_traits.h b/app/src/main/cpp/libcxx/test/std/strings/basic.string/test_traits.h
new file mode 100644
index 0000000..78a98cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/test_traits.h
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_TRAITS_H
+#define TEST_TRAITS_H
+
+template <class charT>
+struct test_traits
+{
+    typedef charT     char_type;
+};
+
+#endif // TEST_TRAITS_H
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/traits_mismatch.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/traits_mismatch.verify.cpp
new file mode 100644
index 0000000..82c438b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/traits_mismatch.verify.cpp
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+//   The strings's value type must be the same as the traits's char_type
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+
+std::basic_string<char, std::char_traits<wchar_t> > s; // expected-error@*:* {{traits_type::char_type must be the same type as CharT}}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/basic.string/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/basic.string/types.pass.cpp
new file mode 100644
index 0000000..542336b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/basic.string/types.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Test nested types and default template args:
+
+// template<class charT, class traits = char_traits<charT>,
+//   class Allocator = allocator<charT> >
+// {
+// public:
+//     // types:
+//     typedef traits traits_type;
+//     typedef typename traits::char_type value_type;
+//     typedef Allocator allocator_type;
+//     typedef typename Allocator::size_type size_type;
+//     typedef typename Allocator::difference_type difference_type;
+//     typedef typename Allocator::reference reference;
+//     typedef typename Allocator::const_reference const_reference;
+//     typedef typename Allocator::pointer pointer;
+//     typedef typename Allocator::const_pointer const_pointer;
+//     typedef implementation-defined iterator; // See 23.1
+//     typedef implementation-defined const_iterator; // See 23.1
+//     typedef std::reverse_iterator<iterator> reverse_iterator;
+//     typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+//     static const size_type npos = -1;
+// };
+
+#include <string>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_traits.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class Traits, class Allocator>
+void
+test()
+{
+    typedef std::basic_string<typename Traits::char_type, Traits, Allocator> S;
+
+    static_assert((std::is_same<typename S::traits_type, Traits>::value), "");
+    static_assert((std::is_same<typename S::value_type, typename Traits::char_type>::value), "");
+    static_assert((std::is_same<typename S::value_type, typename Allocator::value_type>::value), "");
+    static_assert((std::is_same<typename S::allocator_type, Allocator>::value), "");
+    static_assert((std::is_same<typename S::size_type, typename std::allocator_traits<Allocator>::size_type>::value), "");
+    static_assert((std::is_same<typename S::difference_type, typename std::allocator_traits<Allocator>::difference_type>::value), "");
+    static_assert((std::is_same<typename S::reference, typename S::value_type&>::value), "");
+    static_assert((std::is_same<typename S::const_reference, const typename S::value_type&>::value), "");
+    static_assert((std::is_same<typename S::pointer, typename std::allocator_traits<Allocator>::pointer>::value), "");
+    static_assert((std::is_same<typename S::const_pointer, typename std::allocator_traits<Allocator>::const_pointer>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename S::iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename S::const_iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename S::reverse_iterator,
+        std::reverse_iterator<typename S::iterator> >::value), "");
+    static_assert((std::is_same<
+        typename S::const_reverse_iterator,
+        std::reverse_iterator<typename S::const_iterator> >::value), "");
+    static_assert(S::npos == -1, "");
+}
+
+int main(int, char**)
+{
+    test<test_traits<char>, test_allocator<char> >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::char_traits<wchar_t>, std::allocator<wchar_t> >();
+#endif
+    static_assert((std::is_same<std::basic_string<char>::traits_type,
+                                std::char_traits<char> >::value), "");
+    static_assert((std::is_same<std::basic_string<char>::allocator_type,
+                                std::allocator<char> >::value), "");
+#if TEST_STD_VER >= 11
+    test<std::char_traits<char>, min_allocator<char> >();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/c.strings/cctype.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cctype.pass.cpp
new file mode 100644
index 0000000..c26c1e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cctype.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cctype>
+
+#include <cctype>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifdef isalnum
+#error isalnum defined
+#endif
+
+#ifdef isalpha
+#error isalpha defined
+#endif
+
+#ifdef isblank
+#error isblank defined
+#endif
+
+#ifdef iscntrl
+#error iscntrl defined
+#endif
+
+#ifdef isdigit
+#error isdigit defined
+#endif
+
+#ifdef isgraph
+#error isgraph defined
+#endif
+
+#ifdef islower
+#error islower defined
+#endif
+
+#ifdef isprint
+#error isprint defined
+#endif
+
+#ifdef ispunct
+#error ispunct defined
+#endif
+
+#ifdef isspace
+#error isspace defined
+#endif
+
+#ifdef isupper
+#error isupper defined
+#endif
+
+#ifdef isxdigit
+#error isxdigit defined
+#endif
+
+#ifdef tolower
+#error tolower defined
+#endif
+
+#ifdef toupper
+#error toupper defined
+#endif
+
+int main(int, char**)
+{
+
+    ASSERT_SAME_TYPE(int, decltype(std::isalnum(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isalpha(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isblank(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::iscntrl(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isdigit(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isgraph(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::islower(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isprint(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::ispunct(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isspace(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isupper(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::isxdigit(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::tolower(0)));
+    ASSERT_SAME_TYPE(int, decltype(std::toupper(0)));
+
+    assert( std::isalnum('a'));
+    assert( std::isalpha('a'));
+    assert( std::isblank(' '));
+    assert(!std::iscntrl(' '));
+    assert(!std::isdigit('a'));
+    assert( std::isgraph('a'));
+    assert( std::islower('a'));
+    assert( std::isprint('a'));
+    assert(!std::ispunct('a'));
+    assert(!std::isspace('a'));
+    assert(!std::isupper('a'));
+    assert( std::isxdigit('a'));
+    assert( std::tolower('A') == 'a');
+    assert( std::toupper('a') == 'A');
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/c.strings/cstring.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cstring.pass.cpp
new file mode 100644
index 0000000..02842a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cstring.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstring>
+
+#include <cstring>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+int main(int, char**)
+{
+    // Functions we get directly from the C library (just check the signature)
+    {
+        std::size_t s = 0;
+        void* vp = 0;
+        const void* vpc = 0;
+        char* cp = 0;
+        const char* cpc = 0;
+        ASSERT_SAME_TYPE(void*,         decltype(std::memcpy(vp, vpc, s)));
+        ASSERT_SAME_TYPE(void*,         decltype(std::memmove(vp, vpc, s)));
+        ASSERT_SAME_TYPE(char*,         decltype(std::strcpy(cp, cpc)));
+        ASSERT_SAME_TYPE(char*,         decltype(std::strncpy(cp, cpc, s)));
+        ASSERT_SAME_TYPE(char*,         decltype(std::strcat(cp, cpc)));
+        ASSERT_SAME_TYPE(char*,         decltype(std::strncat(cp, cpc, s)));
+        ASSERT_SAME_TYPE(int,           decltype(std::memcmp(vpc, vpc, s)));
+        ASSERT_SAME_TYPE(int,           decltype(std::strcmp(cpc, cpc)));
+        ASSERT_SAME_TYPE(int,           decltype(std::strncmp(cpc, cpc, s)));
+        ASSERT_SAME_TYPE(int,           decltype(std::strcoll(cpc, cpc)));
+        ASSERT_SAME_TYPE(std::size_t,   decltype(std::strxfrm(cp, cpc, s)));
+        ASSERT_SAME_TYPE(std::size_t,   decltype(std::strcspn(cpc, cpc)));
+        ASSERT_SAME_TYPE(std::size_t,   decltype(std::strspn(cpc, cpc)));
+        ASSERT_SAME_TYPE(char*,         decltype(std::strtok(cp, cpc)));
+        ASSERT_SAME_TYPE(void*,         decltype(std::memset(vp, 0, s)));
+        ASSERT_SAME_TYPE(char*,         decltype(std::strerror(0)));
+        ASSERT_SAME_TYPE(std::size_t,   decltype(std::strlen(cpc)));
+    }
+
+    // Functions we (may) reimplement
+    {
+        // const char* strchr(const char*, int)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(std::strchr(s, 'l')));
+        const char* res = std::strchr(s, 'l');
+        assert(res == &s[2]);
+    }
+    {
+        // char* strchr(char*, int)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(std::strchr(s, 'l')));
+        char* res = std::strchr(s, 'l');
+        assert(res == &s[2]);
+    }
+
+    {
+        // const char* strpbrk(const char*, const char*)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(std::strpbrk(s, "el")));
+        const char* res = std::strpbrk(s, "el");
+        assert(res == &s[1]);
+    }
+    {
+        // char* strpbrk(char*, const char*)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(std::strpbrk(s, "el")));
+        char* res = std::strpbrk(s, "el");
+        assert(res == &s[1]);
+    }
+
+    {
+        // const char* strrchr(const char*, int)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(std::strrchr(s, 'l')));
+        const char* res = std::strrchr(s, 'l');
+        assert(res == &s[9]);
+    }
+    {
+        // char* strrchr(char*, int)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(std::strrchr(s, 'l')));
+        char* res = std::strrchr(s, 'l');
+        assert(res == &s[9]);
+    }
+
+    {
+        // const void* memchr(const void*, int, size_t)
+        char storage[] = "hello world";
+        std::size_t count = 11;
+        const void* s = storage;
+        ASSERT_SAME_TYPE(const void*, decltype(std::memchr(s, 'l', count)));
+        const void* res = std::memchr(s, 'l', count);
+        assert(res == &storage[2]);
+    }
+    {
+        // void* memchr(void*, int, size_t)
+        char storage[] = "hello world";
+        std::size_t count = 11;
+        void* s = storage;
+        ASSERT_SAME_TYPE(void*, decltype(std::memchr(s, 'l', count)));
+        void* res = std::memchr(s, 'l', count);
+        assert(res == &storage[2]);
+    }
+
+    {
+        // const char* strstr(const char*, const char*)
+        char storage[] = "hello world";
+        const char* s = storage;
+        ASSERT_SAME_TYPE(const char*, decltype(std::strstr(s, "wor")));
+        const char* res = std::strstr(s, "wor");
+        assert(res == &storage[6]);
+    }
+    {
+        // char* strstr(char*, const char*)
+        char storage[] = "hello world";
+        char* s = storage;
+        ASSERT_SAME_TYPE(char*, decltype(std::strstr(s, "wor")));
+        char* res = std::strstr(s, "wor");
+        assert(res == &storage[6]);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/c.strings/cuchar.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cuchar.compile.pass.cpp
new file mode 100644
index 0000000..909f2c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cuchar.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Apple platforms don't provide <uchar.h> yet, so these tests fail.
+// XFAIL: target={{.+}}-apple-{{.+}}
+
+// The system-provided <uchar.h> seems to be broken on AIX
+// XFAIL: LIBCXX-AIX-FIXME
+
+// <cuchar>
+
+#include <cuchar>
+
+#include "test_macros.h"
+
+// __STDC_UTF_16__ may or may not be defined by the C standard library
+// __STDC_UTF_32__ may or may not be defined by the C standard library
+
+#if !defined(TEST_HAS_NO_C8RTOMB_MBRTOC8)
+ASSERT_SAME_TYPE(size_t, decltype(std::mbrtoc8((char8_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
+ASSERT_SAME_TYPE(size_t, decltype(std::c8rtomb((char*)0, (char8_t)0, (mbstate_t*)0)));
+#endif
+
+ASSERT_SAME_TYPE(size_t, decltype(std::mbrtoc16((char16_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
+ASSERT_SAME_TYPE(size_t, decltype(std::c16rtomb((char*)0, (char16_t)0, (mbstate_t*)0)));
+
+ASSERT_SAME_TYPE(size_t, decltype(std::mbrtoc32((char32_t*)0, (const char*)0, (size_t)0, (mbstate_t*)0)));
+ASSERT_SAME_TYPE(size_t, decltype(std::c16rtomb((char*)0, (char32_t)0, (mbstate_t*)0)));
diff --git a/app/src/main/cpp/libcxx/test/std/strings/c.strings/cwchar.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cwchar.pass.cpp
new file mode 100644
index 0000000..4e9909e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cwchar.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cwchar>
+
+// XFAIL: no-wide-characters
+
+#include <cwchar>
+#include <ctime>
+#include <cstdarg>
+#include <cstdio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#ifndef NULL
+#error NULL not defined
+#endif
+
+#ifndef WCHAR_MAX
+#error WCHAR_MAX not defined
+#endif
+
+#ifndef WCHAR_MIN
+#error WCHAR_MIN not defined
+#endif
+
+#ifndef WEOF
+#error WEOF not defined
+#endif
+
+int main(int, char**)
+{
+    std::mbstate_t mb = {};
+    std::size_t s = 0;
+    std::tm *tm = 0;
+    std::wint_t w = 0;
+    ::FILE* fp = 0;
+    std::va_list va;
+
+    char* ns = 0;
+    wchar_t* ws = 0;
+    const wchar_t* cws = 0;
+    wchar_t** wsp = 0;
+
+    ((void)mb); // Prevent unused warning
+    ((void)s); // Prevent unused warning
+    ((void)tm); // Prevent unused warning
+    ((void)w); // Prevent unused warning
+    ((void)fp); // Prevent unused warning
+    ((void)va); // Prevent unused warning
+    ((void)ns); // Prevent unused warning
+    ((void)ws); // Prevent unused warning
+    ((void)cws); // Prevent unused warning
+    ((void)wsp); // Prevent unused warning
+
+    ASSERT_SAME_TYPE(int,                decltype(std::fwprintf(fp, L"")));
+    ASSERT_SAME_TYPE(int,                decltype(std::fwscanf(fp, L"")));
+    ASSERT_SAME_TYPE(int,                decltype(std::swprintf(ws, s, L"")));
+    ASSERT_SAME_TYPE(int,                decltype(std::swscanf(L"", L"")));
+    ASSERT_SAME_TYPE(int,                decltype(std::vfwprintf(fp, L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(std::vfwscanf(fp, L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(std::vswprintf(ws, s, L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(std::vswscanf(L"", L"", va)));
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::fgetwc(fp)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::fgetws(ws, 0, fp)));
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::fputwc(L' ', fp)));
+    ASSERT_SAME_TYPE(int,                decltype(std::fputws(L"", fp)));
+    ASSERT_SAME_TYPE(int,                decltype(std::fwide(fp, 0)));
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::getwc(fp)));
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::putwc(L' ', fp)));
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::ungetwc(L' ', fp)));
+    ASSERT_SAME_TYPE(double,             decltype(std::wcstod(L"", wsp)));
+    ASSERT_SAME_TYPE(float,              decltype(std::wcstof(L"", wsp)));
+    ASSERT_SAME_TYPE(long double,        decltype(std::wcstold(L"", wsp)));
+    ASSERT_SAME_TYPE(long,               decltype(std::wcstol(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(long long,          decltype(std::wcstoll(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(unsigned long,      decltype(std::wcstoul(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(unsigned long long, decltype(std::wcstoull(L"", wsp, 0)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcscpy(ws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcsncpy(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcscat(ws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcsncat(ws, L"", s)));
+    ASSERT_SAME_TYPE(int,                decltype(std::wcscmp(L"", L"")));
+    ASSERT_SAME_TYPE(int,                decltype(std::wcscoll(L"", L"")));
+    ASSERT_SAME_TYPE(int,                decltype(std::wcsncmp(L"", L"", s)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcsxfrm(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcschr(ws, L' ')));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(std::wcschr(cws, L' ')));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcscspn(L"", L"")));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcslen(L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcspbrk(ws, L"")));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(std::wcspbrk(cws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcsrchr(ws, L' ')));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(std::wcsrchr(cws, L' ')));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcsspn(L"", L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcsstr(ws, L"")));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(std::wcsstr(cws, L"")));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wcstok(ws, L"", wsp)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wmemchr(ws, L' ', s)));
+    ASSERT_SAME_TYPE(const wchar_t*,     decltype(std::wmemchr(cws, L' ', s)));
+    ASSERT_SAME_TYPE(int,                decltype(std::wmemcmp(L"", L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wmemcpy(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wmemmove(ws, L"", s)));
+    ASSERT_SAME_TYPE(wchar_t*,           decltype(std::wmemset(ws, L' ', s)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcsftime(ws, s, L"", tm)));
+    ASSERT_SAME_TYPE(wint_t,             decltype(std::btowc(0)));
+    ASSERT_SAME_TYPE(int,                decltype(std::wctob(w)));
+    ASSERT_SAME_TYPE(int,                decltype(std::mbsinit(&mb)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::mbrlen("", s, &mb)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::mbrtowc(ws, "", s, &mb)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcrtomb(ns, L' ', &mb)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::mbsrtowcs(ws, (const char**)0, s, &mb)));
+    ASSERT_SAME_TYPE(std::size_t,        decltype(std::wcsrtombs(ns, (const wchar_t**)0, s, &mb)));
+
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::getwchar()));
+    ASSERT_SAME_TYPE(int,                decltype(std::vwscanf(L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(std::wscanf(L"")));
+
+    ASSERT_SAME_TYPE(std::wint_t,        decltype(std::putwchar(L' ')));
+    ASSERT_SAME_TYPE(int,                decltype(std::vwprintf(L"", va)));
+    ASSERT_SAME_TYPE(int,                decltype(std::wprintf(L"")));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/c.strings/cwctype.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cwctype.pass.cpp
new file mode 100644
index 0000000..171ebf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/c.strings/cwctype.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cwctype>
+
+// XFAIL: no-wide-characters
+
+#include <cwctype>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+#ifndef WEOF
+#error WEOF not defined
+#endif
+
+#ifdef iswalnum
+#error iswalnum defined
+#endif
+
+#ifdef iswalpha
+#error iswalpha defined
+#endif
+
+#ifdef iswblank
+#error iswblank defined
+#endif
+
+#ifdef iswcntrl
+#error iswcntrl defined
+#endif
+
+#ifdef iswdigit
+#error iswdigit defined
+#endif
+
+#ifdef iswgraph
+#error iswgraph defined
+#endif
+
+#ifdef iswlower
+#error iswlower defined
+#endif
+
+#ifdef iswprint
+#error iswprint defined
+#endif
+
+#ifdef iswpunct
+#error iswpunct defined
+#endif
+
+#ifdef iswspace
+#error iswspace defined
+#endif
+
+#ifdef iswupper
+#error iswupper defined
+#endif
+
+#ifdef iswxdigit
+#error iswxdigit defined
+#endif
+
+#ifdef iswctype
+#error iswctype defined
+#endif
+
+#ifdef wctype
+#error wctype defined
+#endif
+
+#ifdef towlower
+#error towlower defined
+#endif
+
+#ifdef towupper
+#error towupper defined
+#endif
+
+#ifdef towctrans
+#error towctrans defined
+#endif
+
+#ifdef wctrans
+#error wctrans defined
+#endif
+
+int main(int, char**)
+{
+    std::wint_t w = 0;
+    ASSERT_SAME_TYPE(int, decltype(std::iswalnum(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswalpha(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswblank(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswcntrl(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswdigit(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswgraph(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswlower(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswprint(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswpunct(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswspace(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswupper(w)));
+    ASSERT_SAME_TYPE(int, decltype(std::iswxdigit(w)));
+
+    ASSERT_SAME_TYPE(int, decltype(std::iswctype(w, std::wctype_t())));
+
+    ASSERT_SAME_TYPE(std::wctype_t,  decltype(std::wctype("")));
+    ASSERT_SAME_TYPE(std::wint_t,    decltype(std::towlower(w)));
+    ASSERT_SAME_TYPE(std::wint_t,    decltype(std::towupper(w)));
+    ASSERT_SAME_TYPE(std::wint_t,    decltype(std::towctrans(w, std::wctrans_t())));
+    ASSERT_SAME_TYPE(std::wctrans_t, decltype(std::wctrans("")));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/c.strings/no_c8rtomb_mbrtoc8.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/c.strings/no_c8rtomb_mbrtoc8.verify.cpp
new file mode 100644
index 0000000..f39aef4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/c.strings/no_c8rtomb_mbrtoc8.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// The system-provided <uchar.h> seems to be broken on AIX:
+//   error: 'error' diagnostics seen but not expected:
+//     File /usr/include/uchar.h Line 38: cannot combine with previous 'type-name' declaration specifier
+//     File /usr/include/uchar.h Line 39: cannot combine with previous 'type-name' declaration specifier
+//   2 errors generated.
+// XFAIL: LIBCXX-AIX-FIXME
+
+#include <uchar.h>
+
+using U = decltype(::c8rtomb);
+using V = decltype(::mbrtoc8);
+#if defined(_LIBCPP_HAS_NO_C8RTOMB_MBRTOC8)
+// expected-error@-3 {{no member named 'c8rtomb' in the global namespace}}
+// expected-error@-3 {{no member named 'mbrtoc8' in the global namespace}}
+#else
+// expected-no-diagnostics
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.require/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.require/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.require/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/assign2.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/assign2.pass.cpp
new file mode 100644
index 0000000..c60e6db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/assign2.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr void assign(char_type& c1, const char_type& c2); // constexpr in C++17
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    char c = '1';
+    std::char_traits<char>::assign(c, 'a');
+    return c == 'a';
+}
+#endif
+
+int main(int, char**)
+{
+    char c = '\0';
+    std::char_traits<char>::assign(c, 'a');
+    assert(c == 'a');
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/assign3.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/assign3.pass.cpp
new file mode 100644
index 0000000..4dcd7c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/assign3.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static char_type* assign(char_type* s, size_t n, char_type a);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char s2[3] = {0};
+    assert(std::char_traits<char>::assign(s2, 3, char(5)) == s2);
+    assert(s2[0] == char(5));
+    assert(s2[1] == char(5));
+    assert(s2[2] == char(5));
+    assert(std::char_traits<char>::assign(NULL, 0, char(5)) == NULL);
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/compare.pass.cpp
new file mode 100644
index 0000000..4926b62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/compare.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static int compare(const char_type* s1, const char_type* s2, size_t n);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char>::compare("123", "223", 3) < 0
+        && std::char_traits<char>::compare("223", "123", 3) > 0
+        && std::char_traits<char>::compare("123", "123", 3) == 0;
+}
+#endif
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::compare("", "", 0) == 0);
+    assert(std::char_traits<char>::compare(NULL, NULL, 0) == 0);
+
+    assert(std::char_traits<char>::compare("1", "1", 1) == 0);
+    assert(std::char_traits<char>::compare("1", "2", 1) < 0);
+    assert(std::char_traits<char>::compare("2", "1", 1) > 0);
+
+    assert(std::char_traits<char>::compare("12", "12", 2) == 0);
+    assert(std::char_traits<char>::compare("12", "13", 2) < 0);
+    assert(std::char_traits<char>::compare("12", "22", 2) < 0);
+    assert(std::char_traits<char>::compare("13", "12", 2) > 0);
+    assert(std::char_traits<char>::compare("22", "12", 2) > 0);
+
+    assert(std::char_traits<char>::compare("123", "123", 3) == 0);
+    assert(std::char_traits<char>::compare("123", "223", 3) < 0);
+    assert(std::char_traits<char>::compare("123", "133", 3) < 0);
+    assert(std::char_traits<char>::compare("123", "124", 3) < 0);
+    assert(std::char_traits<char>::compare("223", "123", 3) > 0);
+    assert(std::char_traits<char>::compare("133", "123", 3) > 0);
+    assert(std::char_traits<char>::compare("124", "123", 3) > 0);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/copy.pass.cpp
new file mode 100644
index 0000000..5c471a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/copy.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char s1[] = {1, 2, 3};
+    char s2[3] = {0};
+    assert(std::char_traits<char>::copy(s2, s1, 3) == s2);
+    assert(s2[0] == char(1));
+    assert(s2[1] == char(2));
+    assert(s2[2] == char(3));
+    assert(std::char_traits<char>::copy(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char>::copy(s1, NULL, 0) == s1);
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eof.pass.cpp
new file mode 100644
index 0000000..93eb2a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eof.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr int_type eof();
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::eof() == EOF);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq.pass.cpp
new file mode 100644
index 0000000..e379848
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr bool eq(char_type c1, char_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::eq('a', 'a'));
+    assert(!std::char_traits<char>::eq('a', 'A'));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq_int_type.pass.cpp
new file mode 100644
index 0000000..4c82d65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq_int_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr bool eq_int_type(int_type c1, int_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert( std::char_traits<char>::eq_int_type('a', 'a'));
+    assert(!std::char_traits<char>::eq_int_type('a', 'A'));
+    assert(!std::char_traits<char>::eq_int_type(std::char_traits<char>::eof(), 'A'));
+    assert( std::char_traits<char>::eq_int_type(std::char_traits<char>::eof(),
+                                                std::char_traits<char>::eof()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/find.pass.cpp
new file mode 100644
index 0000000..9745008
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/find.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static const char_type* find(const char_type* s, size_t n, const char_type& a);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    constexpr const char *p = "123";
+    return std::char_traits<char>::find(p, 3, '1') == p
+        && std::char_traits<char>::find(p, 3, '2') == p + 1
+        && std::char_traits<char>::find(p, 3, '3') == p + 2
+        && std::char_traits<char>::find(p, 3, '4') == nullptr;
+}
+#endif
+
+int main(int, char**)
+{
+    char s1[] = {1, 2, 3};
+    assert(std::char_traits<char>::find(s1, 3, char(1)) == s1);
+    assert(std::char_traits<char>::find(s1, 3, char(2)) == s1+1);
+    assert(std::char_traits<char>::find(s1, 3, char(3)) == s1+2);
+    assert(std::char_traits<char>::find(s1, 3, char(4)) == 0);
+    assert(std::char_traits<char>::find(s1, 3, char(0)) == 0);
+    assert(std::char_traits<char>::find(NULL, 0, char(0)) == 0);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/length.pass.cpp
new file mode 100644
index 0000000..8be4e0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/length.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static size_t length(const char_type* s);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char>::length("") == 0
+        && std::char_traits<char>::length("abcd") == 4;
+}
+#endif
+
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::length("") == 0);
+    assert(std::char_traits<char>::length("a") == 1);
+    assert(std::char_traits<char>::length("aa") == 2);
+    assert(std::char_traits<char>::length("aaa") == 3);
+    assert(std::char_traits<char>::length("aaaa") == 4);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/lt.pass.cpp
new file mode 100644
index 0000000..81a8574
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/lt.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr bool lt(char_type c1, char_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  assert(std::char_traits<char>::lt('\0', 'A') == ('\0' < 'A'));
+  assert(std::char_traits<char>::lt('A', '\0') == ('A' < '\0'));
+
+  assert(std::char_traits<char>::lt('a', 'a') == ('a' < 'a'));
+  assert(std::char_traits<char>::lt('A', 'a') == ('A' < 'a'));
+  assert(std::char_traits<char>::lt('a', 'A') == ('a' < 'A'));
+
+  assert(std::char_traits<char>::lt('a', 'z') == ('a' < 'z'));
+  assert(std::char_traits<char>::lt('A', 'Z') == ('A' < 'Z'));
+
+  assert(std::char_traits<char>::lt(' ', 'A') == (' ' < 'A'));
+  assert(std::char_traits<char>::lt('A', '~') == ('A' < '~'));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/move.pass.cpp
new file mode 100644
index 0000000..fd29d39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/move.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static char_type* move(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char s1[] = {1, 2, 3};
+    assert(std::char_traits<char>::move(s1, s1+1, 2) == s1);
+    assert(s1[0] == char(2));
+    assert(s1[1] == char(3));
+    assert(s1[2] == char(3));
+    s1[2] = char(0);
+    assert(std::char_traits<char>::move(s1+1, s1, 2) == s1+1);
+    assert(s1[0] == char(2));
+    assert(s1[1] == char(2));
+    assert(s1[2] == char(3));
+    assert(std::char_traits<char>::move(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char>::move(s1, NULL, 0) == s1);
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/not_eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/not_eof.pass.cpp
new file mode 100644
index 0000000..a03479b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/not_eof.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr int_type not_eof(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::not_eof('a') == 'a');
+    assert(std::char_traits<char>::not_eof('A') == 'A');
+    assert(std::char_traits<char>::not_eof(0) == 0);
+    assert(std::char_traits<char>::not_eof(std::char_traits<char>::eof()) !=
+           std::char_traits<char>::eof());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/to_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/to_char_type.pass.cpp
new file mode 100644
index 0000000..079a83e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/to_char_type.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr char_type to_char_type(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::to_char_type('a') == 'a');
+    assert(std::char_traits<char>::to_char_type('A') == 'A');
+    assert(std::char_traits<char>::to_char_type(0) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/to_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/to_int_type.pass.cpp
new file mode 100644
index 0000000..525395d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/to_int_type.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// static constexpr int_type to_int_type(char_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<char>::to_int_type('a') == 'a');
+    assert(std::char_traits<char>::to_int_type('A') == 'A');
+    assert(std::char_traits<char>::to_int_type(0) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/types.compile.pass.cpp
new file mode 100644
index 0000000..48ee001
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/types.compile.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char>
+
+// using char_type           = char;
+// using int_type            = int;
+// using off_type            = streamoff;
+// using pos_type            = streampos;
+// using state_type          = mbstate_t;
+// using comparison_category = strong_ordering;
+
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_same<std::char_traits<char>::char_type, char>::value, "");
+static_assert(std::is_same<std::char_traits<char>::int_type, int>::value, "");
+static_assert(std::is_same<std::char_traits<char>::off_type, std::streamoff>::value, "");
+static_assert(std::is_same<std::char_traits<char>::pos_type, std::streampos>::value, "");
+static_assert(std::is_same<std::char_traits<char>::state_type, std::mbstate_t>::value, "");
+#if TEST_STD_VER > 17
+static_assert(std::is_same_v<std::char_traits<char>::comparison_category, std::strong_ordering>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.pass.cpp
new file mode 100644
index 0000000..2390144
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign2.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static void assign(char_type& c1, const char_type& c2);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    char16_t c = u'1';
+    std::char_traits<char16_t>::assign(c, u'a');
+    return c == u'a';
+}
+#endif
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    char16_t c = u'\0';
+    std::char_traits<char16_t>::assign(c, u'a');
+    assert(c == u'a');
+#endif
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign3.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign3.pass.cpp
new file mode 100644
index 0000000..bab76a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/assign3.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static char_type* assign(char_type* s, size_t n, char_type a);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char16_t s2[3] = {0};
+    assert(std::char_traits<char16_t>::assign(s2, 3, char16_t(5)) == s2);
+    assert(s2[0] == char16_t(5));
+    assert(s2[1] == char16_t(5));
+    assert(s2[2] == char16_t(5));
+    assert(std::char_traits<char16_t>::assign(NULL, 0, char16_t(5)) == NULL);
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.pass.cpp
new file mode 100644
index 0000000..00664b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/compare.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static int compare(const char_type* s1, const char_type* s2, size_t n);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char16_t>::compare(u"123", u"223", 3) < 0
+        && std::char_traits<char16_t>::compare(u"223", u"123", 3) > 0
+        && std::char_traits<char16_t>::compare(u"123", u"123", 3) == 0;
+}
+#endif
+
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char16_t>::compare(u"", u"", 0) == 0);
+    assert(std::char_traits<char16_t>::compare(NULL, NULL, 0) == 0);
+
+    assert(std::char_traits<char16_t>::compare(u"1", u"1", 1) == 0);
+    assert(std::char_traits<char16_t>::compare(u"1", u"2", 1) < 0);
+    assert(std::char_traits<char16_t>::compare(u"2", u"1", 1) > 0);
+
+    assert(std::char_traits<char16_t>::compare(u"12", u"12", 2) == 0);
+    assert(std::char_traits<char16_t>::compare(u"12", u"13", 2) < 0);
+    assert(std::char_traits<char16_t>::compare(u"12", u"22", 2) < 0);
+    assert(std::char_traits<char16_t>::compare(u"13", u"12", 2) > 0);
+    assert(std::char_traits<char16_t>::compare(u"22", u"12", 2) > 0);
+
+    assert(std::char_traits<char16_t>::compare(u"123", u"123", 3) == 0);
+    assert(std::char_traits<char16_t>::compare(u"123", u"223", 3) < 0);
+    assert(std::char_traits<char16_t>::compare(u"123", u"133", 3) < 0);
+    assert(std::char_traits<char16_t>::compare(u"123", u"124", 3) < 0);
+    assert(std::char_traits<char16_t>::compare(u"223", u"123", 3) > 0);
+    assert(std::char_traits<char16_t>::compare(u"133", u"123", 3) > 0);
+    assert(std::char_traits<char16_t>::compare(u"124", u"123", 3) > 0);
+#endif
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/copy.pass.cpp
new file mode 100644
index 0000000..fc0ab1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/copy.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char16_t s1[] = {1, 2, 3};
+    char16_t s2[3] = {0};
+    assert(std::char_traits<char16_t>::copy(s2, s1, 3) == s2);
+    assert(s2[0] == char16_t(1));
+    assert(s2[1] == char16_t(2));
+    assert(s2[2] == char16_t(3));
+    assert(std::char_traits<char16_t>::copy(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char16_t>::copy(s1, NULL, 0) == s1);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eof.pass.cpp
new file mode 100644
index 0000000..8996cc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eof.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr int_type eof();
+
+#include <string>
+
+int main(int, char**)
+{
+    std::char_traits<char16_t>::int_type i = std::char_traits<char16_t>::eof();
+    ((void)i); // Prevent unused warning
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp
new file mode 100644
index 0000000..540ee40
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr bool eq(char_type c1, char_type c2);
+
+// UNSUPPORTED: c++03
+
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    assert(std::char_traits<char16_t>::eq(u'a', u'a'));
+    assert(!std::char_traits<char16_t>::eq(u'a', u'A'));
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.pass.cpp
new file mode 100644
index 0000000..2976031
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq_int_type.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr bool eq_int_type(int_type c1, int_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert( std::char_traits<char16_t>::eq_int_type(u'a', u'a'));
+    assert(!std::char_traits<char16_t>::eq_int_type(u'a', u'A'));
+    assert(!std::char_traits<char16_t>::eq_int_type(std::char_traits<char16_t>::eof(), u'A'));
+#endif
+    assert( std::char_traits<char16_t>::eq_int_type(std::char_traits<char16_t>::eof(),
+                                                    std::char_traits<char16_t>::eof()));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/find.pass.cpp
new file mode 100644
index 0000000..8b39f4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/find.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static const char_type* find(const char_type* s, size_t n, const char_type& a);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    constexpr const char16_t *p = u"123";
+    return std::char_traits<char16_t>::find(p, 3, u'1') == p
+        && std::char_traits<char16_t>::find(p, 3, u'2') == p + 1
+        && std::char_traits<char16_t>::find(p, 3, u'3') == p + 2
+        && std::char_traits<char16_t>::find(p, 3, u'4') == nullptr;
+}
+#endif
+
+int main(int, char**)
+{
+    char16_t s1[] = {1, 2, 3};
+    assert(std::char_traits<char16_t>::find(s1, 3, char16_t(1)) == s1);
+    assert(std::char_traits<char16_t>::find(s1, 3, char16_t(2)) == s1+1);
+    assert(std::char_traits<char16_t>::find(s1, 3, char16_t(3)) == s1+2);
+    assert(std::char_traits<char16_t>::find(s1, 3, char16_t(4)) == 0);
+    assert(std::char_traits<char16_t>::find(s1, 3, char16_t(0)) == 0);
+    assert(std::char_traits<char16_t>::find(NULL, 0, char16_t(0)) == 0);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.pass.cpp
new file mode 100644
index 0000000..28940e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/length.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static size_t length(const char_type* s);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char16_t>::length(u"") == 0
+        && std::char_traits<char16_t>::length(u"abcd") == 4;
+}
+#endif
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char16_t>::length(u"") == 0);
+    assert(std::char_traits<char16_t>::length(u"a") == 1);
+    assert(std::char_traits<char16_t>::length(u"aa") == 2);
+    assert(std::char_traits<char16_t>::length(u"aaa") == 3);
+    assert(std::char_traits<char16_t>::length(u"aaaa") == 4);
+#endif
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp
new file mode 100644
index 0000000..960e6f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr bool lt(char_type c1, char_type c2);
+
+// UNSUPPORTED: c++03
+
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    assert(!std::char_traits<char16_t>::lt(u'a', u'a'));
+    assert( std::char_traits<char16_t>::lt(u'A', u'a'));
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/move.pass.cpp
new file mode 100644
index 0000000..d011d7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/move.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static char_type* move(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char16_t s1[] = {1, 2, 3};
+    assert(std::char_traits<char16_t>::move(s1, s1+1, 2) == s1);
+    assert(s1[0] == char16_t(2));
+    assert(s1[1] == char16_t(3));
+    assert(s1[2] == char16_t(3));
+    s1[2] = char16_t(0);
+    assert(std::char_traits<char16_t>::move(s1+1, s1, 2) == s1+1);
+    assert(s1[0] == char16_t(2));
+    assert(s1[1] == char16_t(2));
+    assert(s1[2] == char16_t(3));
+    assert(std::char_traits<char16_t>::move(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char16_t>::move(s1, NULL, 0) == s1);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.pass.cpp
new file mode 100644
index 0000000..3db7de1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/not_eof.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr int_type not_eof(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char16_t>::not_eof(u'a') == u'a');
+    assert(std::char_traits<char16_t>::not_eof(u'A') == u'A');
+#endif
+    assert(std::char_traits<char16_t>::not_eof(0) == 0);
+    assert(std::char_traits<char16_t>::not_eof(std::char_traits<char16_t>::eof()) !=
+           std::char_traits<char16_t>::eof());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.pass.cpp
new file mode 100644
index 0000000..89e5ba2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_char_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr char_type to_char_type(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char16_t>::to_char_type(u'a') == u'a');
+    assert(std::char_traits<char16_t>::to_char_type(u'A') == u'A');
+#endif
+    assert(std::char_traits<char16_t>::to_char_type(0) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.pass.cpp
new file mode 100644
index 0000000..442a2ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/to_int_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// static constexpr int_type to_int_type(char_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char16_t>::to_int_type(u'a') == u'a');
+    assert(std::char_traits<char16_t>::to_int_type(u'A') == u'A');
+#endif
+    assert(std::char_traits<char16_t>::to_int_type(0) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/types.compile.pass.cpp
new file mode 100644
index 0000000..69f12c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/types.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char16_t>
+
+// using char_type           = char16_t;
+// using int_type            = uint_least16_t;
+// using off_type            = streamoff;
+// using pos_type            = u16streampos;
+// using state_type          = mbstate_t;
+// using comparison_category = strong_ordering;
+
+#include <string>
+#include <type_traits>
+#include <cstdint>
+
+#include "test_macros.h"
+
+static_assert(std::is_same<std::char_traits<char16_t>::char_type, char16_t>::value, "");
+static_assert(std::is_same<std::char_traits<char16_t>::int_type, std::uint_least16_t>::value, "");
+static_assert(std::is_same<std::char_traits<char16_t>::off_type, std::streamoff>::value, "");
+static_assert(std::is_same<std::char_traits<char16_t>::pos_type, std::u16streampos>::value, "");
+static_assert(std::is_same<std::char_traits<char16_t>::state_type, std::mbstate_t>::value, "");
+#if TEST_STD_VER > 17
+static_assert(std::is_same_v<std::char_traits<char16_t>::comparison_category, std::strong_ordering>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.pass.cpp
new file mode 100644
index 0000000..2ecaa79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign2.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static void assign(char_type& c1, const char_type& c2);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    char32_t c = U'1';
+    std::char_traits<char32_t>::assign(c, U'a');
+    return c == U'a';
+}
+#endif
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    char32_t c = U'\0';
+    std::char_traits<char32_t>::assign(c, U'a');
+    assert(c == U'a');
+#endif
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign3.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign3.pass.cpp
new file mode 100644
index 0000000..cf9ec1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/assign3.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static char_type* assign(char_type* s, size_t n, char_type a);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char32_t s2[3] = {0};
+    assert(std::char_traits<char32_t>::assign(s2, 3, char32_t(5)) == s2);
+    assert(s2[0] == char32_t(5));
+    assert(s2[1] == char32_t(5));
+    assert(s2[2] == char32_t(5));
+    assert(std::char_traits<char32_t>::assign(NULL, 0, char32_t(5)) == NULL);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.pass.cpp
new file mode 100644
index 0000000..7cce879
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/compare.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static int compare(const char_type* s1, const char_type* s2, size_t n);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char32_t>::compare(U"123", U"223", 3) < 0
+        && std::char_traits<char32_t>::compare(U"223", U"123", 3) > 0
+        && std::char_traits<char32_t>::compare(U"123", U"123", 3) == 0;
+}
+#endif
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char32_t>::compare(U"", U"", 0) == 0);
+    assert(std::char_traits<char32_t>::compare(NULL, NULL, 0) == 0);
+
+    assert(std::char_traits<char32_t>::compare(U"1", U"1", 1) == 0);
+    assert(std::char_traits<char32_t>::compare(U"1", U"2", 1) < 0);
+    assert(std::char_traits<char32_t>::compare(U"2", U"1", 1) > 0);
+
+    assert(std::char_traits<char32_t>::compare(U"12", U"12", 2) == 0);
+    assert(std::char_traits<char32_t>::compare(U"12", U"13", 2) < 0);
+    assert(std::char_traits<char32_t>::compare(U"12", U"22", 2) < 0);
+    assert(std::char_traits<char32_t>::compare(U"13", U"12", 2) > 0);
+    assert(std::char_traits<char32_t>::compare(U"22", U"12", 2) > 0);
+
+    assert(std::char_traits<char32_t>::compare(U"123", U"123", 3) == 0);
+    assert(std::char_traits<char32_t>::compare(U"123", U"223", 3) < 0);
+    assert(std::char_traits<char32_t>::compare(U"123", U"133", 3) < 0);
+    assert(std::char_traits<char32_t>::compare(U"123", U"124", 3) < 0);
+    assert(std::char_traits<char32_t>::compare(U"223", U"123", 3) > 0);
+    assert(std::char_traits<char32_t>::compare(U"133", U"123", 3) > 0);
+    assert(std::char_traits<char32_t>::compare(U"124", U"123", 3) > 0);
+#endif
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/copy.pass.cpp
new file mode 100644
index 0000000..f030309
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/copy.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char32_t s1[] = {1, 2, 3};
+    char32_t s2[3] = {0};
+    assert(std::char_traits<char32_t>::copy(s2, s1, 3) == s2);
+    assert(s2[0] == char32_t(1));
+    assert(s2[1] == char32_t(2));
+    assert(s2[2] == char32_t(3));
+    assert(std::char_traits<char32_t>::copy(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char32_t>::copy(s1, NULL, 0) == s1);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eof.pass.cpp
new file mode 100644
index 0000000..4fe39ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eof.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr int_type eof();
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::char_traits<char32_t>::int_type i = std::char_traits<char32_t>::eof();
+    ((void)i); // Prevent unused warning
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp
new file mode 100644
index 0000000..84268bb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr bool eq(char_type c1, char_type c2);
+
+// UNSUPPORTED: c++03
+
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    assert(std::char_traits<char32_t>::eq(U'a', U'a'));
+    assert(!std::char_traits<char32_t>::eq(U'a', U'A'));
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.pass.cpp
new file mode 100644
index 0000000..c90137d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq_int_type.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr bool eq_int_type(int_type c1, int_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert( std::char_traits<char32_t>::eq_int_type(U'a', U'a'));
+    assert(!std::char_traits<char32_t>::eq_int_type(U'a', U'A'));
+    assert(!std::char_traits<char32_t>::eq_int_type(std::char_traits<char32_t>::eof(), U'A'));
+#endif
+    assert( std::char_traits<char32_t>::eq_int_type(std::char_traits<char32_t>::eof(),
+                                                    std::char_traits<char32_t>::eof()));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/find.pass.cpp
new file mode 100644
index 0000000..9f856ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/find.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static const char_type* find(const char_type* s, size_t n, const char_type& a);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    constexpr const char32_t *p = U"123";
+    return std::char_traits<char32_t>::find(p, 3, U'1') == p
+        && std::char_traits<char32_t>::find(p, 3, U'2') == p + 1
+        && std::char_traits<char32_t>::find(p, 3, U'3') == p + 2
+        && std::char_traits<char32_t>::find(p, 3, U'4') == nullptr;
+}
+#endif
+
+int main(int, char**)
+{
+    char32_t s1[] = {1, 2, 3};
+    assert(std::char_traits<char32_t>::find(s1, 3, char32_t(1)) == s1);
+    assert(std::char_traits<char32_t>::find(s1, 3, char32_t(2)) == s1+1);
+    assert(std::char_traits<char32_t>::find(s1, 3, char32_t(3)) == s1+2);
+    assert(std::char_traits<char32_t>::find(s1, 3, char32_t(4)) == 0);
+    assert(std::char_traits<char32_t>::find(s1, 3, char32_t(0)) == 0);
+    assert(std::char_traits<char32_t>::find(NULL, 0, char32_t(0)) == 0);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.pass.cpp
new file mode 100644
index 0000000..985efa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/length.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static size_t length(const char_type* s);
+// constexpr in C++17
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char32_t>::length(U"") == 0
+        && std::char_traits<char32_t>::length(U"abcd") == 4;
+}
+#endif
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char32_t>::length(U"") == 0);
+    assert(std::char_traits<char32_t>::length(U"a") == 1);
+    assert(std::char_traits<char32_t>::length(U"aa") == 2);
+    assert(std::char_traits<char32_t>::length(U"aaa") == 3);
+    assert(std::char_traits<char32_t>::length(U"aaaa") == 4);
+#endif
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp
new file mode 100644
index 0000000..7d7b484
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr bool lt(char_type c1, char_type c2);
+
+// UNSUPPORTED: c++03
+
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    assert(!std::char_traits<char32_t>::lt(U'a', U'a'));
+    assert( std::char_traits<char32_t>::lt(U'A', U'a'));
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp
new file mode 100644
index 0000000..930a1fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/move.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static char_type* move(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    char32_t s1[] = {1, 2, 3};
+    assert(std::char_traits<char32_t>::move(s1, s1+1, 2) == s1);
+    assert(s1[0] == char32_t(2));
+    assert(s1[1] == char32_t(3));
+    assert(s1[2] == char32_t(3));
+    s1[2] = char32_t(0);
+    assert(std::char_traits<char32_t>::move(s1+1, s1, 2) == s1+1);
+    assert(s1[0] == char32_t(2));
+    assert(s1[1] == char32_t(2));
+    assert(s1[2] == char32_t(3));
+    assert(std::char_traits<char32_t>::move(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char32_t>::move(s1, NULL, 0) == s1);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.pass.cpp
new file mode 100644
index 0000000..7e58454
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/not_eof.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr int_type not_eof(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char32_t>::not_eof(U'a') == U'a');
+    assert(std::char_traits<char32_t>::not_eof(U'A') == U'A');
+#endif
+    assert(std::char_traits<char32_t>::not_eof(0) == 0);
+    assert(std::char_traits<char32_t>::not_eof(std::char_traits<char32_t>::eof()) !=
+           std::char_traits<char32_t>::eof());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.pass.cpp
new file mode 100644
index 0000000..a01d1e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_char_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr char_type to_char_type(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char32_t>::to_char_type(U'a') == U'a');
+    assert(std::char_traits<char32_t>::to_char_type(U'A') == U'A');
+#endif
+    assert(std::char_traits<char32_t>::to_char_type(0) == 0);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.pass.cpp
new file mode 100644
index 0000000..a12b690
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/to_int_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// static constexpr int_type to_int_type(char_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    assert(std::char_traits<char32_t>::to_int_type(U'a') == U'a');
+    assert(std::char_traits<char32_t>::to_int_type(U'A') == U'A');
+#endif
+    assert(std::char_traits<char32_t>::to_int_type(0) == 0);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/types.compile.pass.cpp
new file mode 100644
index 0000000..2d7bcab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/types.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<char32_t>
+
+// using char_type           = char32_t;
+// using int_type            = uint_least32_t;
+// using off_type            = streamoff;
+// using pos_type            = u32streampos;
+// using state_type          = mbstate_t;
+// using comparison_category = strong_ordering;
+
+#include <string>
+#include <type_traits>
+#include <cstdint>
+
+#include "test_macros.h"
+
+static_assert(std::is_same<std::char_traits<char32_t>::char_type, char32_t>::value, "");
+static_assert(std::is_same<std::char_traits<char32_t>::int_type, std::uint_least32_t>::value, "");
+static_assert(std::is_same<std::char_traits<char32_t>::off_type, std::streamoff>::value, "");
+static_assert(std::is_same<std::char_traits<char32_t>::pos_type, std::u32streampos>::value, "");
+static_assert(std::is_same<std::char_traits<char32_t>::state_type, std::mbstate_t>::value, "");
+#if TEST_STD_VER > 17
+static_assert(std::is_same_v<std::char_traits<char32_t>::comparison_category, std::strong_ordering>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign2.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign2.pass.cpp
new file mode 100644
index 0000000..2a0867c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign2.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr void assign(char_type& c1, const char_type& c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+constexpr bool test_constexpr()
+{
+    char8_t c = u'1';
+    std::char_traits<char8_t>::assign(c, u'a');
+    return c == u'a';
+}
+
+int main(int, char**)
+{
+    char8_t c = u8'\0';
+    std::char_traits<char8_t>::assign(c, u8'a');
+    assert(c == u8'a');
+
+    static_assert(test_constexpr(), "");
+    return 0;
+}
+#else
+int main(int, char**) {
+  return 0;
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign3.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign3.pass.cpp
new file mode 100644
index 0000000..7142863
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/assign3.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static char_type* assign(char_type* s, size_t n, char_type a);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    char8_t s2[3] = {0};
+    assert(std::char_traits<char8_t>::assign(s2, 3, char8_t(5)) == s2);
+    assert(s2[0] == char8_t(5));
+    assert(s2[1] == char8_t(5));
+    assert(s2[2] == char8_t(5));
+    assert(std::char_traits<char8_t>::assign(NULL, 0, char8_t(5)) == NULL);
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/compare.pass.cpp
new file mode 100644
index 0000000..3dd3078
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/compare.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr int compare(const char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char8_t>::compare(u8"123", u8"223", 3) < 0
+        && std::char_traits<char8_t>::compare(u8"223", u8"123", 3) > 0
+        && std::char_traits<char8_t>::compare(u8"123", u8"123", 3) == 0;
+}
+
+
+int main(int, char**)
+{
+    assert(std::char_traits<char8_t>::compare(u8"", u8"", 0) == 0);
+    assert(std::char_traits<char8_t>::compare(NULL, NULL, 0) == 0);
+
+    assert(std::char_traits<char8_t>::compare(u8"1", u8"1", 1) == 0);
+    assert(std::char_traits<char8_t>::compare(u8"1", u8"2", 1) < 0);
+    assert(std::char_traits<char8_t>::compare(u8"2", u8"1", 1) > 0);
+
+    assert(std::char_traits<char8_t>::compare(u8"12", u8"12", 2) == 0);
+    assert(std::char_traits<char8_t>::compare(u8"12", u8"13", 2) < 0);
+    assert(std::char_traits<char8_t>::compare(u8"12", u8"22", 2) < 0);
+    assert(std::char_traits<char8_t>::compare(u8"13", u8"12", 2) > 0);
+    assert(std::char_traits<char8_t>::compare(u8"22", u8"12", 2) > 0);
+
+    assert(std::char_traits<char8_t>::compare(u8"123", u8"123", 3) == 0);
+    assert(std::char_traits<char8_t>::compare(u8"123", u8"223", 3) < 0);
+    assert(std::char_traits<char8_t>::compare(u8"123", u8"133", 3) < 0);
+    assert(std::char_traits<char8_t>::compare(u8"123", u8"124", 3) < 0);
+    assert(std::char_traits<char8_t>::compare(u8"223", u8"123", 3) > 0);
+    assert(std::char_traits<char8_t>::compare(u8"133", u8"123", 3) > 0);
+    assert(std::char_traits<char8_t>::compare(u8"124", u8"123", 3) > 0);
+
+    static_assert(test_constexpr(), "" );
+    return 0;
+}
+#else
+int main(int, char**) {
+  return 0;
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/copy.pass.cpp
new file mode 100644
index 0000000..cbaeeba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/copy.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    char8_t s1[] = {1, 2, 3};
+    char8_t s2[3] = {0};
+    assert(std::char_traits<char8_t>::copy(s2, s1, 3) == s2);
+    assert(s2[0] == char8_t(1));
+    assert(s2[1] == char8_t(2));
+    assert(s2[2] == char8_t(3));
+    assert(std::char_traits<char8_t>::copy(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char8_t>::copy(s1, NULL, 0) == s1);
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eof.pass.cpp
new file mode 100644
index 0000000..b214279
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eof.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr int_type eof();
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    std::char_traits<char8_t>::int_type i = std::char_traits<char8_t>::eof();
+    ((void)i); // Prevent unused warning
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eq.pass.cpp
new file mode 100644
index 0000000..87c2732
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eq.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr bool eq(char_type c1, char_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert( std::char_traits<char8_t>::eq(u8'a', u8'a'));
+    assert(!std::char_traits<char8_t>::eq(u8'a', u8'A'));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eq_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eq_int_type.pass.cpp
new file mode 100644
index 0000000..1d4bfe7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/eq_int_type.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr bool eq_int_type(int_type c1, int_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert( std::char_traits<char8_t>::eq_int_type(u8'a', u8'a'));
+    assert(!std::char_traits<char8_t>::eq_int_type(u8'a', u8'A'));
+    assert(!std::char_traits<char8_t>::eq_int_type(std::char_traits<char8_t>::eof(), u8'A'));
+    assert( std::char_traits<char8_t>::eq_int_type(std::char_traits<char8_t>::eof(),
+                                                    std::char_traits<char8_t>::eof()));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/find.pass.cpp
new file mode 100644
index 0000000..60d17a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/find.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr const char_type* find(const char_type* s, size_t n, const char_type& a);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+constexpr bool test_constexpr()
+{
+    constexpr const char8_t *p = u8"123";
+    return std::char_traits<char8_t>::find(p, 3, u8'1') == p
+        && std::char_traits<char8_t>::find(p, 3, u8'2') == p + 1
+        && std::char_traits<char8_t>::find(p, 3, u8'3') == p + 2
+        && std::char_traits<char8_t>::find(p, 3, u8'4') == nullptr;
+}
+
+int main(int, char**)
+{
+    char8_t s1[] = {1, 2, 3};
+    assert(std::char_traits<char8_t>::find(s1, 3, char8_t(1)) == s1);
+    assert(std::char_traits<char8_t>::find(s1, 3, char8_t(2)) == s1+1);
+    assert(std::char_traits<char8_t>::find(s1, 3, char8_t(3)) == s1+2);
+    assert(std::char_traits<char8_t>::find(s1, 3, char8_t(4)) == 0);
+    assert(std::char_traits<char8_t>::find(s1, 3, char8_t(0)) == 0);
+    assert(std::char_traits<char8_t>::find(NULL, 0, char8_t(0)) == 0);
+
+    static_assert(test_constexpr(), "" );
+    return 0;
+}
+#else
+int main(int, char**) {
+  return 0;
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp
new file mode 100644
index 0000000..602b7ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/length.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr size_t length(const char_type* s);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+constexpr bool test_constexpr()
+{
+    return std::char_traits<char8_t>::length(u8"") == 0
+        && std::char_traits<char8_t>::length(u8"abcd") == 4;
+}
+
+int main(int, char**)
+{
+    assert(std::char_traits<char8_t>::length(u8"") == 0);
+    assert(std::char_traits<char8_t>::length(u8"a") == 1);
+    assert(std::char_traits<char8_t>::length(u8"aa") == 2);
+    assert(std::char_traits<char8_t>::length(u8"aaa") == 3);
+    assert(std::char_traits<char8_t>::length(u8"aaaa") == 4);
+
+    static_assert(test_constexpr(), "");
+    return 0;
+}
+#else
+int main(int, char**) {
+  return 0;
+}
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/lt.pass.cpp
new file mode 100644
index 0000000..26f3806
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/lt.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr bool lt(char_type c1, char_type c2);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert(!std::char_traits<char8_t>::lt(u8'a', u8'a'));
+    assert( std::char_traits<char8_t>::lt(u8'A', u8'a'));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/move.pass.cpp
new file mode 100644
index 0000000..6c5f1b2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/move.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static char_type* move(char_type* s1, const char_type* s2, size_t n);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    char8_t s1[] = {1, 2, 3};
+    assert(std::char_traits<char8_t>::move(s1, s1+1, 2) == s1);
+    assert(s1[0] == char8_t(2));
+    assert(s1[1] == char8_t(3));
+    assert(s1[2] == char8_t(3));
+    s1[2] = char8_t(0);
+    assert(std::char_traits<char8_t>::move(s1+1, s1, 2) == s1+1);
+    assert(s1[0] == char8_t(2));
+    assert(s1[1] == char8_t(2));
+    assert(s1[2] == char8_t(3));
+    assert(std::char_traits<char8_t>::move(NULL, s1, 0) == NULL);
+    assert(std::char_traits<char8_t>::move(s1, NULL, 0) == s1);
+#endif
+
+  return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/not_eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/not_eof.pass.cpp
new file mode 100644
index 0000000..6bfe798
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/not_eof.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr int_type not_eof(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert(std::char_traits<char8_t>::not_eof(u8'a') == u8'a');
+    assert(std::char_traits<char8_t>::not_eof(u8'A') == u8'A');
+    assert(std::char_traits<char8_t>::not_eof(0) == 0);
+    assert(std::char_traits<char8_t>::not_eof(std::char_traits<char8_t>::eof()) !=
+           std::char_traits<char8_t>::eof());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_char_type.pass.cpp
new file mode 100644
index 0000000..98b7e07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_char_type.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr char_type to_char_type(int_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert(std::char_traits<char8_t>::to_char_type(u8'a') == u8'a');
+    assert(std::char_traits<char8_t>::to_char_type(u8'A') == u8'A');
+    assert(std::char_traits<char8_t>::to_char_type(0) == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_int_type.pass.cpp
new file mode 100644
index 0000000..3f65bee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/to_int_type.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// static constexpr int_type to_int_type(char_type c);
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert(std::char_traits<char8_t>::to_int_type(u8'a') == u8'a');
+    assert(std::char_traits<char8_t>::to_int_type(u8'A') == u8'A');
+    assert(std::char_traits<char8_t>::to_int_type(0) == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/types.compile.pass.cpp
new file mode 100644
index 0000000..8dd98e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char8_t/types.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template<> struct char_traits<char8_t>
+
+// using char_type           = char8_t;
+// using int_type            = unsigned int;
+// using off_type            = streamoff;
+// using pos_type            = u8streampos;
+// using state_type          = mbstate_t;
+// using comparison_category = strong_ordering;
+
+#include <string>
+#include <type_traits>
+#include <cstdint>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+static_assert(std::is_same<std::char_traits<char8_t>::char_type, char8_t>::value);
+static_assert(std::is_same<std::char_traits<char8_t>::int_type, unsigned int>::value);
+static_assert(std::is_same<std::char_traits<char8_t>::off_type, std::streamoff>::value);
+static_assert(std::is_same<std::char_traits<char8_t>::pos_type, std::u8streampos>::value);
+static_assert(std::is_same<std::char_traits<char8_t>::state_type, std::mbstate_t>::value);
+static_assert(std::is_same_v<std::char_traits<char8_t>::comparison_category, std::strong_ordering>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/assign2.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/assign2.pass.cpp
new file mode 100644
index 0000000..3348efb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/assign2.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static void assign(char_type& c1, const char_type& c2);
+// constexpr in C++17
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    wchar_t c = L'1';
+    std::char_traits<wchar_t>::assign(c, L'a');
+    return c == L'a';
+}
+#endif
+
+int main(int, char**)
+{
+    wchar_t c = L'\0';
+    std::char_traits<wchar_t>::assign(c, L'a');
+    assert(c == L'a');
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/assign3.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/assign3.pass.cpp
new file mode 100644
index 0000000..bc60599
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/assign3.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static char_type* assign(char_type* s, size_t n, char_type a);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    wchar_t s2[3] = {0};
+    assert(std::char_traits<wchar_t>::assign(s2, 3, wchar_t(5)) == s2);
+    assert(s2[0] == wchar_t(5));
+    assert(s2[1] == wchar_t(5));
+    assert(s2[2] == wchar_t(5));
+    assert(std::char_traits<wchar_t>::assign(NULL, 0, wchar_t(5)) == NULL);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/compare.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/compare.pass.cpp
new file mode 100644
index 0000000..fb9617d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/compare.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static int compare(const char_type* s1, const char_type* s2, size_t n);
+// constexpr in C++17
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<wchar_t>::compare(L"123", L"223", 3) < 0
+        && std::char_traits<wchar_t>::compare(L"223", L"123", 3) > 0
+        && std::char_traits<wchar_t>::compare(L"123", L"123", 3) == 0;
+}
+#endif
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::compare(L"", L"", 0) == 0);
+    assert(std::char_traits<wchar_t>::compare(NULL, NULL, 0) == 0);
+
+    assert(std::char_traits<wchar_t>::compare(L"1", L"1", 1) == 0);
+    assert(std::char_traits<wchar_t>::compare(L"1", L"2", 1) < 0);
+    assert(std::char_traits<wchar_t>::compare(L"2", L"1", 1) > 0);
+
+    assert(std::char_traits<wchar_t>::compare(L"12", L"12", 2) == 0);
+    assert(std::char_traits<wchar_t>::compare(L"12", L"13", 2) < 0);
+    assert(std::char_traits<wchar_t>::compare(L"12", L"22", 2) < 0);
+    assert(std::char_traits<wchar_t>::compare(L"13", L"12", 2) > 0);
+    assert(std::char_traits<wchar_t>::compare(L"22", L"12", 2) > 0);
+
+    assert(std::char_traits<wchar_t>::compare(L"123", L"123", 3) == 0);
+    assert(std::char_traits<wchar_t>::compare(L"123", L"223", 3) < 0);
+    assert(std::char_traits<wchar_t>::compare(L"123", L"133", 3) < 0);
+    assert(std::char_traits<wchar_t>::compare(L"123", L"124", 3) < 0);
+    assert(std::char_traits<wchar_t>::compare(L"223", L"123", 3) > 0);
+    assert(std::char_traits<wchar_t>::compare(L"133", L"123", 3) > 0);
+    assert(std::char_traits<wchar_t>::compare(L"124", L"123", 3) > 0);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/copy.pass.cpp
new file mode 100644
index 0000000..b1bfba9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/copy.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    wchar_t s1[] = {1, 2, 3};
+    wchar_t s2[3] = {0};
+    assert(std::char_traits<wchar_t>::copy(s2, s1, 3) == s2);
+    assert(s2[0] == wchar_t(1));
+    assert(s2[1] == wchar_t(2));
+    assert(s2[2] == wchar_t(3));
+    assert(std::char_traits<wchar_t>::copy(NULL, s1, 0) == NULL);
+    assert(std::char_traits<wchar_t>::copy(s1, NULL, 0) == s1);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eof.pass.cpp
new file mode 100644
index 0000000..5cfb1f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eof.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr int_type eof();
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::eof() == WEOF);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eq.pass.cpp
new file mode 100644
index 0000000..9ca8ea1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eq.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr bool eq(char_type c1, char_type c2);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::eq(L'a', L'a'));
+    assert(!std::char_traits<wchar_t>::eq(L'a', L'A'));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eq_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eq_int_type.pass.cpp
new file mode 100644
index 0000000..d3536d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/eq_int_type.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr bool eq_int_type(int_type c1, int_type c2);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert( std::char_traits<wchar_t>::eq_int_type(L'a', L'a'));
+    assert(!std::char_traits<wchar_t>::eq_int_type(L'a', L'A'));
+    assert(!std::char_traits<wchar_t>::eq_int_type(std::char_traits<wchar_t>::eof(), L'A'));
+    assert( std::char_traits<wchar_t>::eq_int_type(std::char_traits<wchar_t>::eof(),
+                                                   std::char_traits<wchar_t>::eof()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/find.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/find.pass.cpp
new file mode 100644
index 0000000..2293723
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/find.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static const char_type* find(const char_type* s, size_t n, const char_type& a);
+// constexpr in C++17
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    constexpr const wchar_t *p = L"123";
+    return std::char_traits<wchar_t>::find(p, 3, L'1') == p
+        && std::char_traits<wchar_t>::find(p, 3, L'2') == p + 1
+        && std::char_traits<wchar_t>::find(p, 3, L'3') == p + 2
+        && std::char_traits<wchar_t>::find(p, 3, L'4') == nullptr;
+}
+#endif
+
+int main(int, char**)
+{
+    wchar_t s1[] = {1, 2, 3};
+    assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(1)) == s1);
+    assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(2)) == s1+1);
+    assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(3)) == s1+2);
+    assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(4)) == 0);
+    assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(0)) == 0);
+    assert(std::char_traits<wchar_t>::find(NULL, 0, wchar_t(0)) == 0);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/length.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/length.pass.cpp
new file mode 100644
index 0000000..d9d62a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/length.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static size_t length(const char_type* s);
+// constexpr in C++17
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    return std::char_traits<wchar_t>::length(L"") == 0
+        && std::char_traits<wchar_t>::length(L"abcd") == 4;
+}
+#endif
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::length(L"") == 0);
+    assert(std::char_traits<wchar_t>::length(L"a") == 1);
+    assert(std::char_traits<wchar_t>::length(L"aa") == 2);
+    assert(std::char_traits<wchar_t>::length(L"aaa") == 3);
+    assert(std::char_traits<wchar_t>::length(L"aaaa") == 4);
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/lt.pass.cpp
new file mode 100644
index 0000000..4ec86aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/lt.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr bool lt(char_type c1, char_type c2);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  assert(std::char_traits<wchar_t>::lt(L'\0', L'A') == (L'\0' < L'A'));
+  assert(std::char_traits<wchar_t>::lt(L'A', L'\0') == (L'A' < L'\0'));
+
+  assert(std::char_traits<wchar_t>::lt(L'a', L'a') == (L'a' < L'a'));
+  assert(std::char_traits<wchar_t>::lt(L'A', L'a') == (L'A' < L'a'));
+  assert(std::char_traits<wchar_t>::lt(L'a', L'A') == (L'a' < L'A'));
+
+  assert(std::char_traits<wchar_t>::lt(L'a', L'z') == (L'a' < L'z'));
+  assert(std::char_traits<wchar_t>::lt(L'A', L'Z') == (L'A' < L'Z'));
+
+  assert(std::char_traits<wchar_t>::lt(L' ', L'A') == (L' ' < L'A'));
+  assert(std::char_traits<wchar_t>::lt(L'A', L'~') == (L'A' < L'~'));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/move.pass.cpp
new file mode 100644
index 0000000..d91048c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/move.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static char_type* move(char_type* s1, const char_type* s2, size_t n);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    wchar_t s1[] = {1, 2, 3};
+    assert(std::char_traits<wchar_t>::move(s1, s1+1, 2) == s1);
+    assert(s1[0] == wchar_t(2));
+    assert(s1[1] == wchar_t(3));
+    assert(s1[2] == wchar_t(3));
+    s1[2] = wchar_t(0);
+    assert(std::char_traits<wchar_t>::move(s1+1, s1, 2) == s1+1);
+    assert(s1[0] == wchar_t(2));
+    assert(s1[1] == wchar_t(2));
+    assert(s1[2] == wchar_t(3));
+    assert(std::char_traits<wchar_t>::move(NULL, s1, 0) == NULL);
+    assert(std::char_traits<wchar_t>::move(s1, NULL, 0) == s1);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/not_eof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/not_eof.pass.cpp
new file mode 100644
index 0000000..bebf917
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/not_eof.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr int_type not_eof(int_type c);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::not_eof(L'a') == L'a');
+    assert(std::char_traits<wchar_t>::not_eof(L'A') == L'A');
+    assert(std::char_traits<wchar_t>::not_eof(0) == 0);
+    assert(std::char_traits<wchar_t>::not_eof(std::char_traits<wchar_t>::eof()) !=
+           std::char_traits<wchar_t>::eof());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/to_char_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/to_char_type.pass.cpp
new file mode 100644
index 0000000..4ded256
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/to_char_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr char_type to_char_type(int_type c);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::to_char_type(L'a') == L'a');
+    assert(std::char_traits<wchar_t>::to_char_type(L'A') == L'A');
+    assert(std::char_traits<wchar_t>::to_char_type(0) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/to_int_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/to_int_type.pass.cpp
new file mode 100644
index 0000000..b125987
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/to_int_type.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// static constexpr int_type to_int_type(char_type c);
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::char_traits<wchar_t>::to_int_type(L'a') == L'a');
+    assert(std::char_traits<wchar_t>::to_int_type(L'A') == L'A');
+    assert(std::char_traits<wchar_t>::to_int_type(0) == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/types.compile.pass.cpp
new file mode 100644
index 0000000..9f5a701
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar_t/types.compile.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// template<> struct char_traits<wchar_t>
+
+// using char_type           = wchar_t;
+// using int_type            = wint_t;
+// using off_type            = streamoff;
+// using pos_type            = streampos;
+// using state_type          = mbstate_t;
+// using comparison_category = strong_ordering;
+
+// UNSUPPORTED: no-wide-characters
+
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_same<std::char_traits<wchar_t>::char_type, wchar_t>::value, "");
+static_assert(std::is_same<std::char_traits<wchar_t>::int_type, std::wint_t>::value, "");
+static_assert(std::is_same<std::char_traits<wchar_t>::off_type, std::streamoff>::value, "");
+static_assert(std::is_same<std::char_traits<wchar_t>::pos_type, std::wstreampos>::value, "");
+static_assert(std::is_same<std::char_traits<wchar_t>::state_type, std::mbstate_t>::value, "");
+#if TEST_STD_VER > 17
+static_assert(std::is_same_v<std::char_traits<wchar_t>::comparison_category, std::strong_ordering>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.typedefs/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.typedefs/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/char.traits/char.traits.typedefs/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.classes/typedefs.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.classes/typedefs.compile.pass.cpp
new file mode 100644
index 0000000..c278e32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.classes/typedefs.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// Test for the existence of:
+
+// basic_string typedef names
+// typedef basic_string<char>     string;
+// typedef basic_string<char16_t> u16string;
+// typedef basic_string<char8_t>  u8string;  // C++20
+// typedef basic_string<char32_t> u32string;
+// typedef basic_string<wchar_t>  wstring;
+
+#include <string>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert((std::is_same<std::string, std::basic_string<char> >::value), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert((std::is_same<std::wstring, std::basic_string<wchar_t> >::value), "");
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+static_assert((std::is_same<std::u8string, std::basic_string<char8_t> >::value), "");
+#endif
+static_assert((std::is_same<std::u16string, std::basic_string<char16_t> >::value), "");
+static_assert((std::is_same<std::u32string, std::basic_string<char32_t> >::value), "");
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stod.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stod.pass.cpp
new file mode 100644
index 0000000..bc553ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stod.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// double stod(const string& str, size_t *idx = 0);
+// double stod(const wstring& str, size_t *idx = 0);
+
+#include <string>
+#include <cmath>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    // char
+    {
+        assert(std::stod("0") == 0);
+        assert(std::stod("-0") == 0);
+        assert(std::stod("-10") == -10);
+        assert(std::stod(" 10") == 10);
+        {
+            size_t idx = 0;
+            assert(std::stod("10g", &idx) == 10);
+            assert(idx == 2);
+        }
+        {
+            size_t idx = 0;
+            assert(std::stod("1.e60", &idx) == 1.e60);
+            assert(idx == 5);
+        }
+        {
+            size_t idx = 0;
+            assert(std::stod("INF", &idx) == INFINITY);
+            assert(idx == 3);
+        }
+        {
+            size_t idx = 0;
+            assert(std::isnan(std::stod("NAN", &idx)));
+            assert(idx == 3);
+        }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            size_t idx = 0;
+            try {
+                assert(std::stod("1.e360", &idx) == INFINITY);
+                assert(false);
+            } catch (const std::out_of_range&) {
+                assert(idx == 0);
+            }
+        }
+        {
+            size_t idx = 0;
+            try {
+                (void)std::stod("", &idx);
+                assert(false);
+            } catch (const std::invalid_argument&) {
+                assert(idx == 0);
+            }
+        }
+        {
+            size_t idx = 0;
+            try {
+                (void)std::stod("  - 8", &idx);
+                assert(false);
+            } catch (const std::invalid_argument&) {
+                assert(idx == 0);
+            }
+        }
+        {
+            size_t idx = 0;
+            try {
+                (void)std::stod("a1", &idx);
+                assert(false);
+            } catch (const std::invalid_argument&) {
+                assert(idx == 0);
+            }
+        }
+#endif // TEST_HAS_NO_EXCEPTIONS
+    }
+
+    // wchar_t
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        assert(std::stod(L"0") == 0);
+        assert(std::stod(L"-0") == 0);
+        assert(std::stod(L"-10.5") == -10.5);
+        assert(std::stod(L" 10") == 10);
+        {
+            size_t idx = 0;
+            assert(std::stod(L"10g", &idx) == 10);
+            assert(idx == 2);
+        }
+        {
+            size_t idx = 0;
+            assert(std::stod(L"1.e60", &idx) == 1.e60);
+            assert(idx == 5);
+        }
+        {
+            size_t idx = 0;
+            assert(std::stod(L"INF", &idx) == INFINITY);
+            assert(idx == 3);
+        }
+        {
+            size_t idx = 0;
+            assert(std::isnan(std::stod(L"NAN", &idx)));
+            assert(idx == 3);
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            size_t idx = 0;
+            try {
+                assert(std::stod(L"1.e360", &idx) == INFINITY);
+                assert(false);
+            } catch (const std::out_of_range&) {
+                assert(idx == 0);
+            }
+        }
+        {
+            size_t idx = 0;
+            try {
+                (void)std::stod(L"", &idx);
+                assert(false);
+            } catch (const std::invalid_argument&) {
+                assert(idx == 0);
+            }
+        }
+        {
+            size_t idx = 0;
+            try {
+                (void)std::stod(L"  - 8", &idx);
+                assert(false);
+            } catch (const std::invalid_argument&) {
+                assert(idx == 0);
+            }
+        }
+        {
+            size_t idx = 0;
+            try {
+                (void)std::stod(L"a1", &idx);
+                assert(false);
+            } catch (const std::invalid_argument&) {
+                assert(idx == 0);
+            }
+        }
+#endif // TEST_HAS_NO_EXCEPTIONS
+    }
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stof.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stof.pass.cpp
new file mode 100644
index 0000000..da4bddd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stof.pass.cpp
@@ -0,0 +1,160 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// float stof(const string& str, size_t *idx = 0);
+// float stof(const wstring& str, size_t *idx = 0);
+
+#include <string>
+#include <cmath>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stof("0") == 0);
+    assert(std::stof("-0") == 0);
+    assert(std::stof("-10") == -10);
+    assert(std::stof(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stof("10g", &idx) == 10);
+        assert(idx == 2);
+    }
+    {
+        size_t idx = 0;
+        assert(std::stof("INF", &idx) == INFINITY);
+        assert(idx == 3);
+    }
+    {
+        size_t idx = 0;
+        assert(std::isnan(std::stof("NAN", &idx)));
+        assert(idx == 3);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            assert(std::stof("1.e60", &idx) == INFINITY);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            assert(std::stof("1.e360", &idx) == INFINITY);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stof("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stof("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stof("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stof(L"0") == 0);
+    assert(std::stof(L"-0") == 0);
+    assert(std::stof(L"-10.5") == -10.5);
+    assert(std::stof(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stof(L"10g", &idx) == 10);
+        assert(idx == 2);
+    }
+    {
+        size_t idx = 0;
+        assert(std::stof(L"INF", &idx) == INFINITY);
+        assert(idx == 3);
+    }
+    {
+        size_t idx = 0;
+        assert(std::isnan(std::stof(L"NAN", &idx)));
+        assert(idx == 3);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            assert(std::stof(L"1.e60", &idx) == INFINITY);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            assert(std::stof(L"1.e360", &idx) == INFINITY);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stof(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stof(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stof(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoi.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoi.pass.cpp
new file mode 100644
index 0000000..8a8ea64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoi.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// int stoi(const string& str, size_t *idx = 0, int base = 10);
+// int stoi(const wstring& str, size_t *idx = 0, int base = 10);
+
+#include <string>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stoi("0") == 0);
+    assert(std::stoi("-0") == 0);
+    assert(std::stoi("-10") == -10);
+    assert(std::stoi(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoi("10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (std::numeric_limits<long>::max() > std::numeric_limits<int>::max()) {
+        size_t idx = 0;
+        try {
+            (void)std::stoi("0x100000000", &idx, 16);
+            assert(false);
+        } catch (const std::out_of_range&) {
+
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoi("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoi("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoi("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stoi(L"0") == 0);
+    assert(std::stoi(L"-0") == 0);
+    assert(std::stoi(L"-10") == -10);
+    assert(std::stoi(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoi(L"10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    if (std::numeric_limits<long>::max() > std::numeric_limits<int>::max()) {
+        size_t idx = 0;
+        try {
+            (void)std::stoi(L"0x100000000", &idx, 16);
+            assert(false);
+        } catch (const std::out_of_range&) {
+
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoi(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoi(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoi(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stol.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stol.pass.cpp
new file mode 100644
index 0000000..3f37693
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stol.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// long stol(const string& str, size_t *idx = 0, int base = 10);
+// long stol(const wstring& str, size_t *idx = 0, int base = 10);
+
+#include <string>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stol("0") == 0);
+    assert(std::stol("-0") == 0);
+    assert(std::stol("-10") == -10);
+    assert(std::stol(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stol("10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stol("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stol("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stol("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stol("9999999999999999999999999999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stol(L"0") == 0);
+    assert(std::stol(L"-0") == 0);
+    assert(std::stol(L"-10") == -10);
+    assert(std::stol(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stol(L"10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stol(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stol(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stol(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stol(L"9999999999999999999999999999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stold.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stold.pass.cpp
new file mode 100644
index 0000000..abe8842
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stold.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// long double stold(const string& str, size_t *idx = 0);
+// long double stold(const wstring& str, size_t *idx = 0);
+
+#include <cassert>
+#include <cmath>
+#include <stdexcept>
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stold("0") == 0);
+    assert(std::stold("-0") == 0);
+    assert(std::stold("-10") == -10);
+    assert(std::stold(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stold("10g", &idx) == 10);
+        assert(idx == 2);
+    }
+    {
+        size_t idx = 0;
+        assert(std::stold("1.e60", &idx) == 1.e60L);
+        assert(idx == 5);
+    }
+    {
+        size_t idx = 0;
+        assert(std::stold("INF", &idx) == INFINITY);
+        assert(idx == 3);
+    }
+    {
+        size_t idx = 0;
+        assert(std::isnan(std::stold("NAN", &idx)));
+        assert(idx == 3);
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stold("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stold("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stold("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            assert(std::stold("1.e6000", &idx) == INFINITY);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stold(L"0") == 0);
+    assert(std::stold(L"-0") == 0);
+    assert(std::stold(L"-10.5") == -10.5);
+    assert(std::stold(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stold(L"10g", &idx) == 10);
+        assert(idx == 2);
+    }
+    {
+        size_t idx = 0;
+        assert(std::stold(L"1.e60", &idx) == 1.e60L);
+        assert(idx == 5);
+    }
+    {
+        size_t idx = 0;
+        assert(std::stold(L"INF", &idx) == INFINITY);
+        assert(idx == 3);
+    }
+    {
+        size_t idx = 0;
+        assert(std::isnan(std::stold(L"NAN", &idx)));
+        assert(idx == 3);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stold(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stold(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stold(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            assert(std::stold(L"1.e6000", &idx) == INFINITY);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoll.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoll.pass.cpp
new file mode 100644
index 0000000..b8eb1b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoll.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// long long stoll(const string& str, size_t *idx = 0, int base = 10);
+// long long stoll(const wstring& str, size_t *idx = 0, int base = 10);
+
+#include <string>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stoll("0") == 0);
+    assert(std::stoll("-0") == 0);
+    assert(std::stoll("-10") == -10);
+    assert(std::stoll(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoll("10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoll("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoll("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoll("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stoll("99999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stoll(L"0") == 0);
+    assert(std::stoll(L"-0") == 0);
+    assert(std::stoll(L"-10") == -10);
+    assert(std::stoll(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoll(L"10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoll(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoll(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoll(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stoll(L"99999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoul.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoul.pass.cpp
new file mode 100644
index 0000000..b84891e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoul.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// unsigned long stoul(const string& str, size_t *idx = 0, int base = 10);
+// unsigned long stoul(const wstring& str, size_t *idx = 0, int base = 10);
+
+#include <string>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stoul("0") == 0);
+    assert(std::stoul("-0") == 0);
+    assert(std::stoul(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoul("10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoul("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoul("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoul("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stoul("9999999999999999999999999999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stoul(L"0") == 0);
+    assert(std::stoul(L"-0") == 0);
+    assert(std::stoul(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoul(L"10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoul(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoul(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoul(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stoul(L"9999999999999999999999999999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoull.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoull.pass.cpp
new file mode 100644
index 0000000..744dcab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/stoull.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// unsigned long long stoull(const string& str, size_t *idx = 0, int base = 10);
+// unsigned long long stoull(const wstring& str, size_t *idx = 0, int base = 10);
+
+#include <string>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::stoull("0") == 0);
+    assert(std::stoull("-0") == 0);
+    assert(std::stoull(" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoull("10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoull("", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoull("  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoull("a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stoull("9999999999999999999999999999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert(std::stoull(L"0") == 0);
+    assert(std::stoull(L"-0") == 0);
+    assert(std::stoull(L" 10") == 10);
+    {
+        size_t idx = 0;
+        assert(std::stoull(L"10g", &idx, 16) == 16);
+        assert(idx == 2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoull(L"", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoull(L"  - 8", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            (void)std::stoull(L"a1", &idx);
+            assert(false);
+        } catch (const std::invalid_argument&) {
+            assert(idx == 0);
+        }
+    }
+    {
+        size_t idx = 0;
+        try {
+            // LWG#2009 and PR14919
+            (void)std::stoull(L"9999999999999999999999999999999999999999999999999", &idx);
+            assert(false);
+        } catch (const std::out_of_range&) {
+            assert(idx == 0);
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/to_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/to_string.pass.cpp
new file mode 100644
index 0000000..3de0232
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/to_string.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string>
+
+// string to_string(int val);
+// string to_string(unsigned val);
+// string to_string(long val);
+// string to_string(unsigned long val);
+// string to_string(long long val);
+// string to_string(unsigned long long val);
+// string to_string(float val);
+// string to_string(double val);
+// string to_string(long double val);
+
+#include <string>
+#include <cassert>
+#include <limits>
+
+#include "parse_integer.h"
+#include "test_macros.h"
+
+template <class T>
+void
+test_signed()
+{
+    {
+        std::string s = std::to_string(T(0));
+        assert(s.size() == 1);
+        assert(s[s.size()] == 0);
+        assert(s == "0");
+    }
+    {
+        std::string s = std::to_string(T(12345));
+        assert(s.size() == 5);
+        assert(s[s.size()] == 0);
+        assert(s == "12345");
+    }
+    {
+        std::string s = std::to_string(T(-12345));
+        assert(s.size() == 6);
+        assert(s[s.size()] == 0);
+        assert(s == "-12345");
+    }
+    {
+        std::string s = std::to_string(std::numeric_limits<T>::max());
+        assert(s.size() == std::numeric_limits<T>::digits10 + 1);
+        T t = parse_integer<T>(s);
+        assert(t == std::numeric_limits<T>::max());
+    }
+    {
+        std::string s = std::to_string(std::numeric_limits<T>::min());
+        T t = parse_integer<T>(s);
+        assert(t == std::numeric_limits<T>::min());
+    }
+}
+
+template <class T>
+void
+test_unsigned()
+{
+    {
+        std::string s = std::to_string(T(0));
+        assert(s.size() == 1);
+        assert(s[s.size()] == 0);
+        assert(s == "0");
+    }
+    {
+        std::string s = std::to_string(T(12345));
+        assert(s.size() == 5);
+        assert(s[s.size()] == 0);
+        assert(s == "12345");
+    }
+    {
+        std::string s = std::to_string(std::numeric_limits<T>::max());
+        assert(s.size() == std::numeric_limits<T>::digits10 + 1);
+        T t = parse_integer<T>(s);
+        assert(t == std::numeric_limits<T>::max());
+    }
+}
+
+template <class T>
+void
+test_float()
+{
+    {
+        std::string s = std::to_string(T(0));
+        assert(s.size() == 8);
+        assert(s[s.size()] == 0);
+        assert(s == "0.000000");
+    }
+    {
+        std::string s = std::to_string(T(12345));
+        assert(s.size() == 12);
+        assert(s[s.size()] == 0);
+        assert(s == "12345.000000");
+    }
+    {
+        std::string s = std::to_string(T(-12345));
+        assert(s.size() == 13);
+        assert(s[s.size()] == 0);
+        assert(s == "-12345.000000");
+    }
+}
+
+int main(int, char**)
+{
+    test_signed<int>();
+    test_signed<long>();
+    test_signed<long long>();
+    test_unsigned<unsigned>();
+    test_unsigned<unsigned long>();
+    test_unsigned<unsigned long long>();
+    test_float<float>();
+    test_float<double>();
+    test_float<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.conversions/to_wstring.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/to_wstring.pass.cpp
new file mode 100644
index 0000000..530982d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.conversions/to_wstring.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: no-wide-characters
+
+// <string>
+
+// wstring to_wstring(int val);
+// wstring to_wstring(unsigned val);
+// wstring to_wstring(long val);
+// wstring to_wstring(unsigned long val);
+// wstring to_wstring(long long val);
+// wstring to_wstring(unsigned long long val);
+// wstring to_wstring(float val);
+// wstring to_wstring(double val);
+// wstring to_wstring(long double val);
+
+#include <string>
+#include <cassert>
+#include <limits>
+
+#include "parse_integer.h"
+#include "test_macros.h"
+
+template <class T>
+void
+test_signed()
+{
+    {
+        std::wstring s = std::to_wstring(T(0));
+        assert(s.size() == 1);
+        assert(s[s.size()] == 0);
+        assert(s == L"0");
+    }
+    {
+        std::wstring s = std::to_wstring(T(12345));
+        assert(s.size() == 5);
+        assert(s[s.size()] == 0);
+        assert(s == L"12345");
+    }
+    {
+        std::wstring s = std::to_wstring(T(-12345));
+        assert(s.size() == 6);
+        assert(s[s.size()] == 0);
+        assert(s == L"-12345");
+    }
+    {
+        std::wstring s = std::to_wstring(std::numeric_limits<T>::max());
+        assert(s.size() == std::numeric_limits<T>::digits10 + 1);
+        T t = parse_integer<T>(s);
+        assert(t == std::numeric_limits<T>::max());
+    }
+    {
+        std::wstring s = std::to_wstring(std::numeric_limits<T>::min());
+        T t = parse_integer<T>(s);
+        assert(t == std::numeric_limits<T>::min());
+    }
+}
+
+template <class T>
+void
+test_unsigned()
+{
+    {
+        std::wstring s = std::to_wstring(T(0));
+        assert(s.size() == 1);
+        assert(s[s.size()] == 0);
+        assert(s == L"0");
+    }
+    {
+        std::wstring s = std::to_wstring(T(12345));
+        assert(s.size() == 5);
+        assert(s[s.size()] == 0);
+        assert(s == L"12345");
+    }
+    {
+        std::wstring s = std::to_wstring(std::numeric_limits<T>::max());
+        assert(s.size() == std::numeric_limits<T>::digits10 + 1);
+        T t = parse_integer<T>(s);
+        assert(t == std::numeric_limits<T>::max());
+    }
+}
+
+template <class T>
+void
+test_float()
+{
+    {
+        std::wstring s = std::to_wstring(T(0));
+        assert(s.size() == 8);
+        assert(s[s.size()] == 0);
+        assert(s == L"0.000000");
+    }
+    {
+        std::wstring s = std::to_wstring(T(12345));
+        assert(s.size() == 12);
+        assert(s[s.size()] == 0);
+        assert(s == L"12345.000000");
+    }
+    {
+        std::wstring s = std::to_wstring(T(-12345));
+        assert(s.size() == 13);
+        assert(s[s.size()] == 0);
+        assert(s == L"-12345.000000");
+    }
+}
+
+int main(int, char**)
+{
+    test_signed<int>();
+    test_signed<long>();
+    test_signed<long long>();
+    test_unsigned<unsigned>();
+    test_unsigned<unsigned long>();
+    test_unsigned<unsigned long long>();
+    test_float<float>();
+    test_float<double>();
+    test_float<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/char.bad.fail.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/char.bad.fail.cpp
new file mode 100644
index 0000000..b1794bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/char.bad.fail.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+//   ... manipulating sequences of any non-array trivial standard-layout types.
+
+#include <string>
+#include "../basic.string/test_traits.h"
+
+struct NotTrivial {
+    NotTrivial() : value(3) {}
+    int value;
+};
+
+struct NotStandardLayout {
+public:
+    NotStandardLayout() : one(1), two(2) {}
+    int sum() const { return one + two; } // silences "unused field 'two' warning"
+    int one;
+private:
+    int two;
+};
+
+int main(int, char**)
+{
+    {
+//  array
+    typedef char C[3];
+    static_assert(std::is_array<C>::value, "");
+    std::basic_string_view<C, test_traits<C> > sv;
+//  expected-error-re@string_view:* {{{{(static_assert|static assertion)}} failed{{.*}}Character type of basic_string_view must not be an array}}
+    }
+
+    {
+//  not trivial
+    static_assert(!std::is_trivial<NotTrivial>::value, "");
+    std::basic_string_view<NotTrivial, test_traits<NotTrivial> > sv;
+//  expected-error-re@string_view:* {{{{(static_assert|static assertion)}} failed{{.*}}Character type of basic_string_view must be trivial}}
+    }
+
+    {
+//  not standard layout
+    static_assert(!std::is_standard_layout<NotStandardLayout>::value, "");
+    std::basic_string_view<NotStandardLayout, test_traits<NotStandardLayout> > sv;
+//  expected-error-re@string_view:* {{{{(static_assert|static assertion)}} failed{{.*}}Character type of basic_string_view must be standard-layout}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/enable_borrowed_range.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/enable_borrowed_range.compile.pass.cpp
new file mode 100644
index 0000000..12f7d0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/enable_borrowed_range.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+// template<class charT, class traits>
+// inline constexpr bool ranges::enable_borrowed_range<
+//     basic_string_view<charT, traits>> = true;
+
+#include <string_view>
+
+#include "test_macros.h"
+
+void test() {
+  using std::ranges::enable_borrowed_range;
+  static_assert(enable_borrowed_range<std::basic_string_view<char> >);
+  static_assert(enable_borrowed_range<std::basic_string_view<wchar_t> >);
+  static_assert(enable_borrowed_range<std::basic_string_view<char8_t> >);
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/range_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/range_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..a845c5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/range_concept_conformance.compile.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// string_view
+
+#include <string_view>
+
+#include <concepts>
+#include <ranges>
+
+
+
+static_assert(std::same_as<std::ranges::iterator_t<std::string_view>, std::string_view::iterator>);
+static_assert(std::ranges::common_range<std::string_view>);
+static_assert(std::ranges::random_access_range<std::string_view>);
+static_assert(std::ranges::contiguous_range<std::string_view>);
+static_assert(std::ranges::view<std::string_view> && std::ranges::enable_view<std::string_view>);
+static_assert(std::ranges::sized_range<std::string_view>);
+static_assert(std::ranges::borrowed_range<std::string_view>);
+static_assert(std::ranges::viewable_range<std::string_view>);
+
+static_assert(std::same_as<std::ranges::iterator_t<std::string_view const>, std::string_view::const_iterator>);
+static_assert(std::ranges::common_range<std::string_view const>);
+static_assert(std::ranges::random_access_range<std::string_view const>);
+static_assert(std::ranges::contiguous_range<std::string_view const>);
+static_assert(!std::ranges::view<std::string_view const> && !std::ranges::enable_view<std::string_view const>);
+static_assert(std::ranges::sized_range<std::string_view const>);
+static_assert(std::ranges::borrowed_range<std::string_view const>);
+static_assert(std::ranges::viewable_range<std::string_view const>);
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/at.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/at.pass.cpp
new file mode 100644
index 0000000..99a81ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/at.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string_view>
+
+// constexpr const _CharT& at(size_type _pos) const;
+
+#include <string_view>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename CharT>
+void test ( const CharT *s, size_t len ) {
+    std::basic_string_view<CharT> sv ( s, len );
+    assert ( sv.length() == len );
+    for ( size_t i = 0; i < len; ++i ) {
+        assert (  sv.at(i) == s[i] );
+        assert ( &sv.at(i) == s + i );
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try { (void)sv.at(len); } catch ( const std::out_of_range & ) { return ; }
+    assert ( false );
+#endif
+}
+
+int main(int, char**) {
+    test ( "ABCDE", 5 );
+    test ( "a", 1 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDE", 5 );
+    test ( L"a", 1 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDE", 5 );
+    test ( u"a", 1 );
+
+    test ( U"ABCDE", 5 );
+    test ( U"a", 1 );
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::basic_string_view<char> sv ( "ABC", 2 );
+    static_assert ( sv.length() ==  2,  "" );
+    static_assert ( sv.at(0) == 'A', "" );
+    static_assert ( sv.at(1) == 'B', "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/back.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/back.pass.cpp
new file mode 100644
index 0000000..49b84ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/back.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const _CharT& front();
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename CharT>
+bool test ( const CharT *s, size_t len ) {
+    typedef std::basic_string_view<CharT> SV;
+    SV sv ( s, len );
+    ASSERT_SAME_TYPE(decltype(sv.back()), typename SV::const_reference);
+    LIBCPP_ASSERT_NOEXCEPT(   sv.back());
+    assert ( sv.length() == len );
+    assert ( sv.back() == s[len-1] );
+    return &sv.back() == s + len - 1;
+    }
+
+int main(int, char**) {
+    assert ( test ( "ABCDE", 5 ));
+    assert ( test ( "a", 1 ));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( test ( L"ABCDE", 5 ));
+    assert ( test ( L"a", 1 ));
+#endif
+
+#if TEST_STD_VER >= 11
+    assert ( test ( u"ABCDE", 5 ));
+    assert ( test ( u"a", 1 ));
+
+    assert ( test ( U"ABCDE", 5 ));
+    assert ( test ( U"a", 1 ));
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::basic_string_view<char> sv ( "ABC", 2 );
+    static_assert ( sv.length() ==  2,  "" );
+    static_assert ( sv.back()  == 'B', "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/data.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/data.pass.cpp
new file mode 100644
index 0000000..50d2a14
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/data.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const _CharT* data() const noexcept;
+
+#include <string_view>
+#include <cassert>
+#include <iterator>
+
+#include "test_macros.h"
+
+template <typename CharT>
+void test ( const CharT *s, size_t len ) {
+    std::basic_string_view<CharT> sv ( s, len );
+    assert ( sv.length() == len );
+    assert ( sv.data() == s );
+#if TEST_STD_VER > 14
+//  make sure we pick up std::data, too!
+    assert ( sv.data() == std::data(sv));
+#endif
+    }
+
+int main(int, char**) {
+    test ( "ABCDE", 5 );
+    test ( "a", 1 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDE", 5 );
+    test ( L"a", 1 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDE", 5 );
+    test ( u"a", 1 );
+
+    test ( U"ABCDE", 5 );
+    test ( U"a", 1 );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    constexpr const char *s = "ABC";
+    constexpr std::basic_string_view<char> sv( s, 2 );
+    static_assert( sv.length() ==  2,  "" );
+    static_assert( sv.data() == s, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/front.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/front.pass.cpp
new file mode 100644
index 0000000..d9e1607
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/front.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const _CharT& back();
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename CharT>
+bool test ( const CharT *s, size_t len ) {
+    typedef std::basic_string_view<CharT> SV;
+    SV sv ( s, len );
+    ASSERT_SAME_TYPE(decltype(sv.front()), typename SV::const_reference);
+    LIBCPP_ASSERT_NOEXCEPT(   sv.front());
+    assert ( sv.length() == len );
+    assert ( sv.front() == s[0] );
+    return &sv.front() == s;
+    }
+
+int main(int, char**) {
+    assert ( test ( "ABCDE", 5 ));
+    assert ( test ( "a", 1 ));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( test ( L"ABCDE", 5 ));
+    assert ( test ( L"a", 1 ));
+#endif
+
+#if TEST_STD_VER >= 11
+    assert ( test ( u"ABCDE", 5 ));
+    assert ( test ( u"a", 1 ));
+
+    assert ( test ( U"ABCDE", 5 ));
+    assert ( test ( U"a", 1 ));
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::basic_string_view<char> sv ( "ABC", 2 );
+    static_assert ( sv.length() ==  2,  "" );
+    static_assert ( sv.front()  == 'A', "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/index.pass.cpp
new file mode 100644
index 0000000..b27bc65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.access/index.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const _CharT& operator[](size_type _pos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename CharT>
+void test ( const CharT *s, size_t len ) {
+    typedef std::basic_string_view<CharT> SV;
+    SV sv ( s, len );
+    ASSERT_SAME_TYPE(decltype(sv[0]), typename SV::const_reference);
+    LIBCPP_ASSERT_NOEXCEPT(   sv[0]);
+    assert ( sv.length() == len );
+    for ( size_t i = 0; i < len; ++i ) {
+        assert ( sv[i] == s[i] );
+        assert ( &sv[i] == s + i );
+        }
+    }
+
+int main(int, char**) {
+    test ( "ABCDE", 5 );
+    test ( "a", 1 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDE", 5 );
+    test ( L"a", 1 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDE", 5 );
+    test ( u"a", 1 );
+
+    test ( U"ABCDE", 5 );
+    test ( U"a", 1 );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    constexpr std::basic_string_view<char> sv ( "ABC", 2 );
+    static_assert ( sv.length() ==  2,  "" );
+    static_assert ( sv[0]  == 'A', "" );
+    static_assert ( sv[1]  == 'B', "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp
new file mode 100644
index 0000000..2e11aa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.capacity/capacity.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// [string.view.capacity], capacity
+// constexpr size_type size()     const noexcept;
+// constexpr size_type length()   const noexcept;
+// constexpr size_type max_size() const noexcept;
+// constexpr bool empty()         const noexcept;
+
+#include <string_view>
+#include <cassert>
+#include <iterator>
+#include <limits>
+
+#include "test_macros.h"
+
+template<typename SV>
+void test1 () {
+#if TEST_STD_VER > 11
+    {
+    constexpr SV sv1;
+    static_assert ( sv1.size() == 0, "" );
+    static_assert ( sv1.empty(), "");
+    static_assert ( sv1.size() == sv1.length(), "" );
+    static_assert ( sv1.max_size() > sv1.size(), "");
+    }
+#endif
+
+    {
+    SV sv1;
+    ASSERT_NOEXCEPT(sv1.size());
+    ASSERT_NOEXCEPT(sv1.empty());
+    ASSERT_NOEXCEPT(sv1.max_size());
+    ASSERT_NOEXCEPT(sv1.length());
+    assert ( sv1.size() == 0 );
+    assert ( sv1.empty());
+    assert ( sv1.size() == sv1.length());
+    assert ( sv1.max_size() > sv1.size());
+    }
+
+    // Sanity check max_size() -- a string_view can't store more bytes than a single object
+    // can contain. Any implementation that fails this check is certainly lying.
+    {
+        typedef typename SV::value_type CharT;
+        typedef typename SV::size_type Size;
+        SV sv;
+        assert(sv.max_size() <= std::numeric_limits<Size>::max() / sizeof(CharT));
+        LIBCPP_ASSERT(sv.max_size() == std::numeric_limits<Size>::max() / sizeof(CharT));
+    }
+}
+
+template<typename CharT>
+void test2 ( const CharT *s, size_t len ) {
+    {
+    std::basic_string_view<CharT> sv1 ( s );
+    assert ( sv1.size() == len );
+    assert ( sv1.data() == s );
+    assert ( sv1.empty() == (len == 0));
+    assert ( sv1.size() == sv1.length());
+    assert ( sv1.max_size() > sv1.size());
+#if TEST_STD_VER > 14
+//  make sure we pick up std::size, too!
+    assert ( sv1.size() == std::size(sv1));
+    assert ( sv1.empty() == std::empty(sv1));
+#endif
+    }
+}
+
+int main(int, char**) {
+    test1<std::string_view> ();
+#ifndef TEST_HAS_NO_CHAR8_T
+    test1<std::u8string_view> ();
+#endif
+    test1<std::u16string_view> ();
+    test1<std::u32string_view> ();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test1<std::wstring_view> ();
+#endif
+
+    test2 ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
+    test2 ( "ABCDE", 5 );
+    test2 ( "a", 1 );
+    test2 ( "", 0 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test2 ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
+    test2 ( L"ABCDE", 5 );
+    test2 ( L"a", 1 );
+    test2 ( L"", 0 );
+#endif
+
+#ifndef TEST_HAS_NO_CHAR8_T
+    test2 ( u8"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
+    test2 ( u8"ABCDE", 5 );
+    test2 ( u8"a", 1 );
+    test2 ( u8"", 0 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test2 ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
+    test2 ( u"ABCDE", 5 );
+    test2 ( u"a", 1 );
+    test2 ( u"", 0 );
+
+    test2 ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE", 105 );
+    test2 ( U"ABCDE", 5 );
+    test2 ( U"a", 1 );
+    test2 ( U"", 0 );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.capacity/empty.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.capacity/empty.verify.cpp
new file mode 100644
index 0000000..9e6af24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.capacity/empty.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <string_view>
+
+// class string_view
+
+// bool empty() const noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <string_view>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::string_view c;
+    c.empty();  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/common_type_specialization.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/common_type_specialization.pass.cpp
new file mode 100644
index 0000000..248ef56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/common_type_specialization.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// During the review D130295 it was noticed libc++'s implementation uses
+// std::common_type. When users specialize this template for their own types the
+// comparisions would fail. This tests with a specialized std::common_type.
+
+// <string_view>
+
+#include <string_view>
+
+#include <cassert>
+#include <cstring>
+
+#include "test_comparisons.h"
+#include "test_macros.h"
+
+struct char_wrapper {
+  char c;
+};
+
+template <>
+struct std::char_traits<char_wrapper> {
+  using char_type = char_wrapper;
+
+  static bool eq(char_wrapper lhs, char_wrapper rhs) { return lhs.c == rhs.c; }
+
+  static size_t length(const char_wrapper* a) {
+    static_assert(sizeof(char_wrapper) == 1, "strlen requires this");
+    return std::strlen(reinterpret_cast<const char*>(a));
+  }
+
+  static int compare(const char_wrapper* lhs, const char_wrapper* rhs, std::size_t count) {
+    return std::char_traits<char>::compare(
+        reinterpret_cast<const char*>(lhs), reinterpret_cast<const char*>(rhs), count);
+  }
+};
+
+using WrappedSV = std::basic_string_view<char_wrapper, std::char_traits<char_wrapper> >;
+
+// std::common_type can be specialized and not have a typedef-name member type.
+template <>
+struct std::common_type<WrappedSV, WrappedSV> {};
+
+struct convertible_to_string_view {
+  WrappedSV sv;
+  convertible_to_string_view(const char_wrapper* a) : sv(a) {}
+  operator WrappedSV() const { return sv; }
+};
+
+template <class T, class U>
+void test() {
+  char_wrapper a[] = {{'a'}, {'b'}, {'c'}, {'\0'}};
+
+  assert((testComparisons(T(a), U(a), true, false)));
+
+#if TEST_STD_VER > 17
+  assert((testOrder(T(a), U(a), std::weak_ordering::equivalent)));
+#endif
+}
+
+int main(int, char**) {
+  test<WrappedSV, convertible_to_string_view>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/comparison.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/comparison.pass.cpp
new file mode 100644
index 0000000..120b9a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/comparison.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Starting with C++20 the spaceship operator was included. This tests
+// comparison in that context, thus doesn't support older language versions.
+// These are tested per operator.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator==(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// template<class charT, class traits>
+//   constexpr auto operator<=>(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+
+#include <array>
+#include <cassert>
+#include <string>
+
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+#include "test_comparisons.h"
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+// Copied from constexpr_char_traits, but it doesn't have a full implementation.
+// It has a comparison_category used in the tests.
+template <class CharT, class Ordering>
+struct char_traits {
+  using char_type           = CharT;
+  using int_type            = int;
+  using off_type            = std::streamoff;
+  using pos_type            = std::streampos;
+  using state_type          = std::mbstate_t;
+  using comparison_category = Ordering;
+
+  static constexpr void assign(char_type& __c1, const char_type& __c2) noexcept { __c1 = __c2; }
+  static constexpr bool eq(char_type __c1, char_type __c2) noexcept { return __c1 == __c2; }
+  static constexpr bool lt(char_type __c1, char_type __c2) noexcept { return __c1 < __c2; }
+  static constexpr int compare(const char_type* __s1, const char_type* __s2, size_t __n) {
+    for (; __n; --__n, ++__s1, ++__s2) {
+      if (lt(*__s1, *__s2))
+        return -1;
+      if (lt(*__s2, *__s1))
+        return 1;
+    }
+    return 0;
+  }
+
+  static constexpr size_t length(const char_type* __s);
+  static constexpr const char_type* find(const char_type* __s, size_t __n, const char_type& __a);
+  static constexpr char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
+  static constexpr char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
+  static constexpr char_type* assign(char_type* __s, size_t __n, char_type __a);
+  static constexpr int_type not_eof(int_type __c) noexcept { return eq_int_type(__c, eof()) ? ~eof() : __c; }
+  static constexpr char_type to_char_type(int_type __c) noexcept { return char_type(__c); }
+  static constexpr int_type to_int_type(char_type __c) noexcept { return int_type(__c); }
+  static constexpr bool eq_int_type(int_type __c1, int_type __c2) noexcept { return __c1 == __c2; }
+  static constexpr int_type eof() noexcept { return int_type(EOF); }
+};
+
+template <class T, class Ordering = std::strong_ordering>
+constexpr void test() {
+  AssertOrderAreNoexcept<T>();
+  AssertOrderReturn<Ordering, T>();
+
+  using CharT = typename T::value_type;
+
+  // sorted values
+  std::array v{
+      SV(""),
+      SV("abc"),
+      SV("abcdef"),
+  };
+
+  // sorted values with embedded NUL character
+  std::array vn{
+      SV("abc"),
+      SV("abc\0"),
+      SV("abc\0def"),
+  };
+  static_assert(v.size() == vn.size());
+
+  for (size_t i = 0; i < v.size(); ++i) {
+    for (size_t j = 0; j < v.size(); ++j) {
+      assert(testOrder(v[i], v[j], i == j ? Ordering::equivalent : i < j ? Ordering::less : Ordering::greater));
+      assert(testOrder(
+          v[i],
+          std::basic_string<CharT>{v[j]},
+          i == j  ? Ordering::equivalent
+          : i < j ? Ordering::less
+                  : Ordering::greater));
+
+      assert(testOrder(
+          v[i],
+          std::basic_string<CharT>{v[j]}.c_str(),
+          i == j  ? Ordering::equivalent
+          : i < j ? Ordering::less
+                  : Ordering::greater));
+
+      // NUL test omitted for c-strings since it will fail.
+      assert(testOrder(vn[i], vn[j], i == j ? Ordering::equivalent : i < j ? Ordering::less : Ordering::greater));
+      assert(testOrder(
+          vn[i],
+          std::basic_string<CharT>{vn[j]},
+          i == j  ? Ordering::equivalent
+          : i < j ? Ordering::less
+                  : Ordering::greater));
+    }
+  }
+}
+
+template <class CharT>
+constexpr void test_all_orderings() {
+  test<std::basic_string_view<CharT>>(); // Strong ordering in its char_traits
+  test<std::basic_string_view<CharT, constexpr_char_traits<CharT>>,
+       std::weak_ordering>(); // No ordering in its char_traits
+  test<std::basic_string_view<CharT, char_traits<CharT, std::weak_ordering>>, std::weak_ordering>();
+  test<std::basic_string_view<CharT, char_traits<CharT, std::partial_ordering>>, std::partial_ordering>();
+}
+
+constexpr bool test_all_types() {
+  test_all_orderings<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_orderings<wchar_t>();
+#endif
+  test_all_orderings<char8_t>();
+  test_all_orderings<char16_t>();
+  test_all_orderings<char32_t>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test_all_types();
+  static_assert(test_all_types());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/comparison.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/comparison.verify.cpp
new file mode 100644
index 0000000..09bd1bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/comparison.verify.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr auto operator<=>(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+//
+// LWG 3432
+// [string.view]/4
+// Mandates: R denotes a comparison category type ([cmp.categories]).
+
+#include <string_view>
+
+#include "test_macros.h"
+
+template <class CharT, class Ordering>
+struct traits {
+  typedef CharT char_type;
+  typedef int int_type;
+  typedef std::streamoff off_type;
+  typedef std::streampos pos_type;
+  typedef std::mbstate_t state_type;
+  using comparison_category = Ordering;
+
+  static constexpr void assign(char_type&, const char_type&) noexcept;
+  static constexpr bool eq(char_type&, const char_type&) noexcept;
+  static constexpr bool lt(char_type&, const char_type&) noexcept;
+
+  static constexpr int compare(const char_type*, const char_type*, size_t) { return 0; }
+  static constexpr size_t length(const char_type*);
+  static constexpr const char_type* find(const char_type*, size_t, const char_type&);
+  static constexpr char_type* move(char_type*, const char_type*, size_t);
+  static constexpr char_type* copy(char_type*, const char_type*, size_t);
+  static constexpr char_type* assign(char_type*, size_t, char_type);
+
+  static constexpr int_type not_eof(int_type) noexcept;
+
+  static constexpr char_type to_char_type(int_type) noexcept;
+
+  static constexpr int_type to_int_type(char_type) noexcept;
+
+  static constexpr bool eq_int_type(int_type, int_type) noexcept;
+
+  static constexpr int_type eof() noexcept;
+};
+
+template <class CharT, class Ordering, bool Valid>
+void test() {
+  using type = std::basic_string_view<CharT, traits<CharT, Ordering>>;
+  if constexpr (Valid)
+    type{} <=> type{};
+  else
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  // These diagnostics are issued for
+  // - Every invalid ordering
+  // - Every type
+  // expected-error-re@string_view:* 15 {{{{(static_assert|static assertion)}} failed{{.*}}return type is not a comparison category type}}
+
+  // This diagnostic is not issued for Ordering == void.
+  // expected-error@string_view:* 10 {{no matching conversion for static_cast from}}
+#else
+  // One less test run when wchar_t is unavailable.
+  // expected-error-re@string_view:* 12 {{{{(static_assert|static assertion)}} failed{{.*}}return type is not a comparison category type}}
+  // expected-error@string_view:* 8 {{no matching conversion for static_cast from}}
+#endif
+    type{} <=> type{};
+}
+
+template <class CharT>
+void test_all_orders() {
+  test<CharT, std::strong_ordering, true>();
+  test<CharT, std::weak_ordering, true>();
+  test<CharT, std::partial_ordering, true>();
+
+  test<CharT, void, false>();
+  test<CharT, int, false>();
+  test<CharT, float, false>();
+}
+
+void test_all_types() {
+  test_all_orders<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_orders<wchar_t>();
+#endif
+  test_all_orders<char8_t>();
+  test_all_orders<char16_t>();
+  test_all_orders<char32_t>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/equal.pass.cpp
new file mode 100644
index 0000000..dbe242c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/equal.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator==(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+
+template<class T>
+struct ConvertibleTo {
+    T t_;
+    TEST_CONSTEXPR explicit ConvertibleTo(T t) : t_(t) {}
+    TEST_CONSTEXPR operator T() const {
+        return t_;
+    }
+};
+
+template<class SV>
+TEST_CONSTEXPR_CXX14 bool test()
+{
+    typedef typename SV::value_type CharT;
+    typedef typename SV::traits_type Traits;
+
+    // Test the behavior of the operator, both with and without implicit conversions.
+    SV v[] = {
+        SV(MAKE_CSTRING(CharT, "")),
+        SV(MAKE_CSTRING(CharT, "abc")),
+        SV(MAKE_CSTRING(CharT, "abcdef")),
+        SV(MAKE_CSTRING(CharT, "acb")),
+    };
+    for (int i = 0; i < 4; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            // See http://eel.is/c++draft/string.view#tab:string.view.comparison.overloads
+            bool expected = (i == j);
+            assert((v[i] == v[j]) == expected);
+            assert((v[i].data() == v[j]) == expected);
+            assert((v[i] == v[j].data()) == expected);
+            assert((ConvertibleTo<SV>(v[i]) == v[j]) == expected);
+            assert((v[i] == ConvertibleTo<SV>(v[j])) == expected);
+
+            if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+                assert((std::basic_string<CharT, Traits>(v[i]) == v[j]) == expected);
+                assert((v[i] == std::basic_string<CharT, Traits>(v[j])) == expected);
+            }
+        }
+    }
+
+    // Test its behavior with embedded null bytes.
+    SV abc = SV(MAKE_CSTRING(CharT, "abc"));
+    SV abc0def = SV(MAKE_CSTRING(CharT, "abc\0def"), 7);
+    SV abcdef = SV(MAKE_CSTRING(CharT, "abcdef"));
+    assert((abc == abc0def) == false);
+    assert((abc == abcdef) == false);
+    assert((abc0def == abc) == false);
+    assert((abc0def == abcdef) == false);
+    assert((abcdef == abc) == false);
+    assert((abcdef == abc0def) == false);
+
+    assert((abc.data() == abc0def) == false);
+    assert((abc0def == abc.data()) == false);
+
+    if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+        assert((std::basic_string<CharT, Traits>(abc) == abc0def) == false);
+        assert((abc0def == std::basic_string<CharT, Traits>(abc)) == false);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+#if TEST_STD_VER >= 11
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#endif
+#if TEST_STD_VER > 14
+    static_assert(test<std::string_view>(), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test<std::wstring_view>(), "");
+#endif
+    static_assert(test<std::u16string_view>(), "");
+    static_assert(test<std::u32string_view>(), "");
+#endif
+
+#if TEST_STD_VER > 11
+    test<std::basic_string_view<char, constexpr_char_traits<char>>>();
+    static_assert(test<std::basic_string_view<char, constexpr_char_traits<char>>>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+    test<std::u8string_view>();
+    static_assert(test<std::u8string_view>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/greater.pass.cpp
new file mode 100644
index 0000000..a3739f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/greater.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator>(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+
+template<class T>
+struct ConvertibleTo {
+    T t_;
+    TEST_CONSTEXPR explicit ConvertibleTo(T t) : t_(t) {}
+    TEST_CONSTEXPR operator T() const {
+        return t_;
+    }
+};
+
+template<class SV>
+TEST_CONSTEXPR_CXX14 bool test()
+{
+    typedef typename SV::value_type CharT;
+    typedef typename SV::traits_type Traits;
+
+    // Test the behavior of the operator, both with and without implicit conversions.
+    SV v[] = {
+        SV(MAKE_CSTRING(CharT, "")),
+        SV(MAKE_CSTRING(CharT, "abc")),
+        SV(MAKE_CSTRING(CharT, "abcdef")),
+        SV(MAKE_CSTRING(CharT, "acb")),
+    };
+    for (int i = 0; i < 4; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            // See http://eel.is/c++draft/string.view#tab:string.view.comparison.overloads
+            bool expected = (i > j);
+            assert((v[i] > v[j]) == expected);
+            assert((v[i].data() > v[j]) == expected);
+            assert((v[i] > v[j].data()) == expected);
+            assert((ConvertibleTo<SV>(v[i]) > v[j]) == expected);
+            assert((v[i] > ConvertibleTo<SV>(v[j])) == expected);
+
+            if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+                assert((std::basic_string<CharT, Traits>(v[i]) > v[j]) == expected);
+                assert((v[i] > std::basic_string<CharT, Traits>(v[j])) == expected);
+            }
+        }
+    }
+
+    // Test its behavior with embedded null bytes.
+    SV abc = SV(MAKE_CSTRING(CharT, "abc"));
+    SV abc0def = SV(MAKE_CSTRING(CharT, "abc\0def"), 7);
+    SV abcdef = SV(MAKE_CSTRING(CharT, "abcdef"));
+    assert((abc > abc0def) == false);
+    assert((abc > abcdef) == false);
+    assert((abc0def > abc) == true);
+    assert((abc0def > abcdef) == false);
+    assert((abcdef > abc) == true);
+    assert((abcdef > abc0def) == true);
+
+    assert((abc.data() > abc0def) == false);
+    assert((abc0def > abc.data()) == true);
+
+    if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+        assert((std::basic_string<CharT, Traits>(abc) > abc0def) == false);
+        assert((abc0def > std::basic_string<CharT, Traits>(abc)) == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+#if TEST_STD_VER >= 11
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#endif
+#if TEST_STD_VER > 14
+    static_assert(test<std::string_view>(), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test<std::wstring_view>(), "");
+#endif
+    static_assert(test<std::u16string_view>(), "");
+    static_assert(test<std::u32string_view>(), "");
+#endif
+
+#if TEST_STD_VER > 11
+    test<std::basic_string_view<char, constexpr_char_traits<char>>>();
+    static_assert(test<std::basic_string_view<char, constexpr_char_traits<char>>>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+    test<std::u8string_view>();
+    static_assert(test<std::u8string_view>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/greater_equal.pass.cpp
new file mode 100644
index 0000000..55d2917
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/greater_equal.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator>=(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+
+template<class T>
+struct ConvertibleTo {
+    T t_;
+    TEST_CONSTEXPR explicit ConvertibleTo(T t) : t_(t) {}
+    TEST_CONSTEXPR operator T() const {
+        return t_;
+    }
+};
+
+template<class SV>
+TEST_CONSTEXPR_CXX14 bool test()
+{
+    typedef typename SV::value_type CharT;
+    typedef typename SV::traits_type Traits;
+
+    // Test the behavior of the operator, both with and without implicit conversions.
+    SV v[] = {
+        SV(MAKE_CSTRING(CharT, "")),
+        SV(MAKE_CSTRING(CharT, "abc")),
+        SV(MAKE_CSTRING(CharT, "abcdef")),
+        SV(MAKE_CSTRING(CharT, "acb")),
+    };
+    for (int i = 0; i < 4; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            // See http://eel.is/c++draft/string.view#tab:string.view.comparison.overloads
+            bool expected = (i >= j);
+            assert((v[i] >= v[j]) == expected);
+            assert((v[i].data() >= v[j]) == expected);
+            assert((v[i] >= v[j].data()) == expected);
+            assert((ConvertibleTo<SV>(v[i]) >= v[j]) == expected);
+            assert((v[i] >= ConvertibleTo<SV>(v[j])) == expected);
+
+            if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+                assert((std::basic_string<CharT, Traits>(v[i]) >= v[j]) == expected);
+                assert((v[i] >= std::basic_string<CharT, Traits>(v[j])) == expected);
+            }
+        }
+    }
+
+    // Test its behavior with embedded null bytes.
+    SV abc = SV(MAKE_CSTRING(CharT, "abc"));
+    SV abc0def = SV(MAKE_CSTRING(CharT, "abc\0def"), 7);
+    SV abcdef = SV(MAKE_CSTRING(CharT, "abcdef"));
+    assert((abc >= abc0def) == false);
+    assert((abc >= abcdef) == false);
+    assert((abc0def >= abc) == true);
+    assert((abc0def >= abcdef) == false);
+    assert((abcdef >= abc) == true);
+    assert((abcdef >= abc0def) == true);
+
+    assert((abc.data() >= abc0def) == false);
+    assert((abc0def >= abc.data()) == true);
+
+    if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+        assert((std::basic_string<CharT, Traits>(abc) >= abc0def) == false);
+        assert((abc0def >= std::basic_string<CharT, Traits>(abc)) == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+#if TEST_STD_VER >= 11
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#endif
+#if TEST_STD_VER > 14
+    static_assert(test<std::string_view>(), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test<std::wstring_view>(), "");
+#endif
+    static_assert(test<std::u16string_view>(), "");
+    static_assert(test<std::u32string_view>(), "");
+#endif
+
+#if TEST_STD_VER > 11
+    test<std::basic_string_view<char, constexpr_char_traits<char>>>();
+    static_assert(test<std::basic_string_view<char, constexpr_char_traits<char>>>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+    test<std::u8string_view>();
+    static_assert(test<std::u8string_view>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/less.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/less.pass.cpp
new file mode 100644
index 0000000..874bf70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/less.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator<(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+
+template<class T>
+struct ConvertibleTo {
+    T t_;
+    TEST_CONSTEXPR explicit ConvertibleTo(T t) : t_(t) {}
+    TEST_CONSTEXPR operator T() const {
+        return t_;
+    }
+};
+
+template<class SV>
+TEST_CONSTEXPR_CXX14 bool test()
+{
+    typedef typename SV::value_type CharT;
+    typedef typename SV::traits_type Traits;
+
+    // Test the behavior of the operator, both with and without implicit conversions.
+    SV v[] = {
+        SV(MAKE_CSTRING(CharT, "")),
+        SV(MAKE_CSTRING(CharT, "abc")),
+        SV(MAKE_CSTRING(CharT, "abcdef")),
+        SV(MAKE_CSTRING(CharT, "acb")),
+    };
+    for (int i = 0; i < 4; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            // See http://eel.is/c++draft/string.view#tab:string.view.comparison.overloads
+            bool expected = (i < j);
+            assert((v[i] < v[j]) == expected);
+            assert((v[i].data() < v[j]) == expected);
+            assert((v[i] < v[j].data()) == expected);
+            assert((ConvertibleTo<SV>(v[i]) < v[j]) == expected);
+            assert((v[i] < ConvertibleTo<SV>(v[j])) == expected);
+
+            if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+                assert((std::basic_string<CharT, Traits>(v[i]) < v[j]) == expected);
+                assert((v[i] < std::basic_string<CharT, Traits>(v[j])) == expected);
+            }
+        }
+    }
+
+    // Test its behavior with embedded null bytes.
+    SV abc = SV(MAKE_CSTRING(CharT, "abc"));
+    SV abc0def = SV(MAKE_CSTRING(CharT, "abc\0def"), 7);
+    SV abcdef = SV(MAKE_CSTRING(CharT, "abcdef"));
+    assert((abc < abc0def) == true);
+    assert((abc < abcdef) == true);
+    assert((abc0def < abc) == false);
+    assert((abc0def < abcdef) == true);
+    assert((abcdef < abc) == false);
+    assert((abcdef < abc0def) == false);
+
+    assert((abc.data() < abc0def) == true);
+    assert((abc0def < abc.data()) == false);
+
+    if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+        assert((std::basic_string<CharT, Traits>(abc) < abc0def) == true);
+        assert((abc0def < std::basic_string<CharT, Traits>(abc)) == false);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+#if TEST_STD_VER >= 11
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#endif
+#if TEST_STD_VER > 14
+    static_assert(test<std::string_view>(), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test<std::wstring_view>(), "");
+#endif
+    static_assert(test<std::u16string_view>(), "");
+    static_assert(test<std::u32string_view>(), "");
+#endif
+
+#if TEST_STD_VER > 11
+    test<std::basic_string_view<char, constexpr_char_traits<char>>>();
+    static_assert(test<std::basic_string_view<char, constexpr_char_traits<char>>>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+    test<std::u8string_view>();
+    static_assert(test<std::u8string_view>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/less_equal.pass.cpp
new file mode 100644
index 0000000..4e3910c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/less_equal.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator<=(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+
+template<class T>
+struct ConvertibleTo {
+    T t_;
+    TEST_CONSTEXPR explicit ConvertibleTo(T t) : t_(t) {}
+    TEST_CONSTEXPR operator T() const {
+        return t_;
+    }
+};
+
+template<class SV>
+TEST_CONSTEXPR_CXX14 bool test()
+{
+    typedef typename SV::value_type CharT;
+    typedef typename SV::traits_type Traits;
+
+    // Test the behavior of the operator, both with and without implicit conversions.
+    SV v[] = {
+        SV(MAKE_CSTRING(CharT, "")),
+        SV(MAKE_CSTRING(CharT, "abc")),
+        SV(MAKE_CSTRING(CharT, "abcdef")),
+        SV(MAKE_CSTRING(CharT, "acb")),
+    };
+    for (int i = 0; i < 4; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            // See http://eel.is/c++draft/string.view#tab:string.view.comparison.overloads
+            bool expected = (i <= j);
+            assert((v[i] <= v[j]) == expected);
+            assert((v[i].data() <= v[j]) == expected);
+            assert((v[i] <= v[j].data()) == expected);
+            assert((ConvertibleTo<SV>(v[i]) <= v[j]) == expected);
+            assert((v[i] <= ConvertibleTo<SV>(v[j])) == expected);
+
+            if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+                assert((std::basic_string<CharT, Traits>(v[i]) <= v[j]) == expected);
+                assert((v[i] <= std::basic_string<CharT, Traits>(v[j])) == expected);
+            }
+        }
+    }
+
+    // Test its behavior with embedded null bytes.
+    SV abc = SV(MAKE_CSTRING(CharT, "abc"));
+    SV abc0def = SV(MAKE_CSTRING(CharT, "abc\0def"), 7);
+    SV abcdef = SV(MAKE_CSTRING(CharT, "abcdef"));
+    assert((abc <= abc0def) == true);
+    assert((abc <= abcdef) == true);
+    assert((abc0def <= abc) == false);
+    assert((abc0def <= abcdef) == true);
+    assert((abcdef <= abc) == false);
+    assert((abcdef <= abc0def) == false);
+
+    assert((abc.data() <= abc0def) == true);
+    assert((abc0def <= abc.data()) == false);
+
+    if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+        assert((std::basic_string<CharT, Traits>(abc) <= abc0def) == true);
+        assert((abc0def <= std::basic_string<CharT, Traits>(abc)) == false);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+#if TEST_STD_VER >= 11
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#endif
+#if TEST_STD_VER > 14
+    static_assert(test<std::string_view>(), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test<std::wstring_view>(), "");
+#endif
+    static_assert(test<std::u16string_view>(), "");
+    static_assert(test<std::u32string_view>(), "");
+#endif
+
+#if TEST_STD_VER > 11
+    test<std::basic_string_view<char, constexpr_char_traits<char>>>();
+    static_assert(test<std::basic_string_view<char, constexpr_char_traits<char>>>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+    test<std::u8string_view>();
+    static_assert(test<std::u8string_view>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/not_equal.pass.cpp
new file mode 100644
index 0000000..867834e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.comparison/not_equal.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits>
+//   constexpr bool operator!=(basic_string_view<charT, traits> lhs, basic_string_view<charT, traits> rhs);
+// (plus "sufficient additional overloads" to make implicit conversions work as intended)
+
+#include <string_view>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+
+template<class T>
+struct ConvertibleTo {
+    T t_;
+    TEST_CONSTEXPR explicit ConvertibleTo(T t) : t_(t) {}
+    TEST_CONSTEXPR operator T() const {
+        return t_;
+    }
+};
+
+template<class SV>
+TEST_CONSTEXPR_CXX14 bool test()
+{
+    typedef typename SV::value_type CharT;
+    typedef typename SV::traits_type Traits;
+
+    // Test the behavior of the operator, both with and without implicit conversions.
+    SV v[] = {
+        SV(MAKE_CSTRING(CharT, "")),
+        SV(MAKE_CSTRING(CharT, "abc")),
+        SV(MAKE_CSTRING(CharT, "abcdef")),
+        SV(MAKE_CSTRING(CharT, "acb")),
+    };
+    for (int i = 0; i < 4; ++i) {
+        for (int j = 0; j < 4; ++j) {
+            // See http://eel.is/c++draft/string.view#tab:string.view.comparison.overloads
+            bool expected = (i != j);
+            assert((v[i] != v[j]) == expected);
+            assert((v[i].data() != v[j]) == expected);
+            assert((v[i] != v[j].data()) == expected);
+            assert((ConvertibleTo<SV>(v[i]) != v[j]) == expected);
+            assert((v[i] != ConvertibleTo<SV>(v[j])) == expected);
+
+            if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+                assert((std::basic_string<CharT, Traits>(v[i]) != v[j]) == expected);
+                assert((v[i] != std::basic_string<CharT, Traits>(v[j])) == expected);
+            }
+        }
+    }
+
+    // Test its behavior with embedded null bytes.
+    SV abc = SV(MAKE_CSTRING(CharT, "abc"));
+    SV abc0def = SV(MAKE_CSTRING(CharT, "abc\0def"), 7);
+    SV abcdef = SV(MAKE_CSTRING(CharT, "abcdef"));
+    assert((abc != abc0def) == true);
+    assert((abc != abcdef) == true);
+    assert((abc0def != abc) == true);
+    assert((abc0def != abcdef) == true);
+    assert((abcdef != abc) == true);
+    assert((abcdef != abc0def) == true);
+
+    assert((abc.data() != abc0def) == true);
+    assert((abc0def != abc.data()) == true);
+
+    if (!TEST_IS_CONSTANT_EVALUATED || TEST_STD_VER >= 20) {
+        assert((std::basic_string<CharT, Traits>(abc) != abc0def) == true);
+        assert((abc0def != std::basic_string<CharT, Traits>(abc)) == true);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+#if TEST_STD_VER >= 11
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#endif
+#if TEST_STD_VER > 14
+    static_assert(test<std::string_view>(), "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test<std::wstring_view>(), "");
+#endif
+    static_assert(test<std::u16string_view>(), "");
+    static_assert(test<std::u32string_view>(), "");
+#endif
+
+#if TEST_STD_VER > 11
+    test<std::basic_string_view<char, constexpr_char_traits<char>>>();
+    static_assert(test<std::basic_string_view<char, constexpr_char_traits<char>>>(), "");
+#endif
+
+#if TEST_STD_VER > 17
+    test<std::u8string_view>();
+    static_assert(test<std::u8string_view>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/assign.pass.cpp
new file mode 100644
index 0000000..735ece2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/assign.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr basic_string_view& operator=(const basic_string_view &) noexcept = default;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename T>
+#if TEST_STD_VER > 11
+constexpr
+#endif
+bool test (T sv0)
+    {
+    T sv1;
+    sv1 = sv0;
+//  We can't just say "sv0 == sv1" here because string_view::compare
+//  isn't constexpr until C++17, and we want to support back to C++14
+    return sv0.size() == sv1.size() && sv0.data() == sv1.data();
+    }
+
+int main(int, char**) {
+
+    assert( test<std::string_view>    (  "1234"));
+#ifndef TEST_HAS_NO_CHAR8_T
+    assert( test<std::u8string_view>  (u8"1234"));
+#endif
+#if TEST_STD_VER >= 11
+    assert( test<std::u16string_view> ( u"1234"));
+    assert( test<std::u32string_view> ( U"1234"));
+#endif
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert( test<std::wstring_view>   ( L"1234"));
+#endif
+
+#if TEST_STD_VER > 11
+    static_assert( test<std::string_view>    ({  "abc", 3}), "");
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert( test<std::u8string_view>  ({u8"abc", 3}), "");
+#   endif
+    static_assert( test<std::u16string_view> ({ u"abc", 3}), "");
+    static_assert( test<std::u32string_view> ({ U"abc", 3}), "");
+#   ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert( test<std::wstring_view>   ({ L"abc", 3}), "");
+#   endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/default.pass.cpp
new file mode 100644
index 0000000..aeb4731
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/default.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr basic_string_view () noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename T>
+void test () {
+#if TEST_STD_VER > 11
+    {
+    ASSERT_NOEXCEPT(T());
+
+    constexpr T sv1;
+    static_assert ( sv1.size() == 0, "" );
+    static_assert ( sv1.empty(), "");
+    }
+#endif
+
+    {
+    T sv1;
+    assert ( sv1.size() == 0 );
+    assert ( sv1.empty());
+    }
+}
+
+int main(int, char**) {
+    test<std::string_view> ();
+    test<std::u16string_view> ();
+#ifndef TEST_HAS_NO_CHAR8_T
+    test<std::u8string_view> ();
+#endif
+    test<std::u32string_view> ();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view> ();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_iterator_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_iterator_sentinel.pass.cpp
new file mode 100644
index 0000000..c103363
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_iterator_sentinel.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//  template <class It, class End>
+//  constexpr basic_string_view(It begin, End end)
+
+#include <string_view>
+#include <cassert>
+#include <iterator>
+
+#include "make_string.h"
+#include "test_iterators.h"
+
+template<class It, class Sentinel, class CharT>
+constexpr void test_construction(std::basic_string_view<CharT> val) {
+  auto sv = std::basic_string_view<CharT>(It(val.data()), Sentinel(It(val.data() + val.size())));
+  assert(sv.data() == val.data());
+  assert(sv.size() == val.size());
+}
+
+template<class CharT>
+constexpr void test_with_char() {
+  const auto val = MAKE_STRING_VIEW(CharT, "test");
+  test_construction<CharT*, CharT*>(val);
+  test_construction<CharT*, const CharT*>(val);
+  test_construction<const CharT*, CharT*>(val);
+  test_construction<const CharT*, sized_sentinel<const CharT*>>(val);
+  test_construction<contiguous_iterator<const CharT*>, contiguous_iterator<const CharT*>>(val);
+  test_construction<contiguous_iterator<const CharT*>, sized_sentinel<contiguous_iterator<const CharT*>>>(val);
+}
+
+constexpr bool test() {
+  test_with_char<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_with_char<wchar_t>();
+#endif
+  test_with_char<char8_t>();
+  test_with_char<char16_t>();
+  test_with_char<char32_t>();
+
+  return true;
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template<class CharT>
+struct ThrowingSentinel {
+  friend bool operator==(const CharT*, ThrowingSentinel) noexcept { return true; }
+  friend std::iter_difference_t<const CharT*> operator-(const CharT*, ThrowingSentinel) noexcept { return {}; }
+  friend std::iter_difference_t<const CharT*> operator-(ThrowingSentinel, const CharT*) { throw 42; }
+};
+
+template <class CharT>
+void test_throwing() {
+  auto val = MAKE_STRING_VIEW(CharT, "test");
+  try {
+    (void)std::basic_string_view<CharT>(val.data(), ThrowingSentinel<CharT>());
+    assert(false);
+  } catch (int i) {
+    assert(i == 42);
+  }
+}
+
+void test_throwing() {
+  test_throwing<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_throwing<wchar_t>();
+#endif
+  test_throwing<char8_t>();
+  test_throwing<char16_t>();
+  test_throwing<char32_t>();
+}
+#endif
+
+static_assert( std::is_constructible_v<std::string_view, const char*, char*>);
+static_assert( std::is_constructible_v<std::string_view, char*, const char*>);
+static_assert(!std::is_constructible_v<std::string_view, char*, void*>);               // not a sentinel
+static_assert(!std::is_constructible_v<std::string_view, signed char*, signed char*>); // wrong char type
+static_assert(!std::is_constructible_v<std::string_view, random_access_iterator<char*>, random_access_iterator<char*>>); // not contiguous
+static_assert( std::is_constructible_v<std::string_view, contiguous_iterator<char*>, contiguous_iterator<char*>>);
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  test_throwing();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_literal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_literal.pass.cpp
new file mode 100644
index 0000000..124aaea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_literal.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr basic_string_view(const _CharT* _s)
+//    : __data (_s), __size(_Traits::length(_s)) {}
+
+#include <string_view>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template<typename CharT>
+size_t StrLen ( const CharT *s ) {
+    size_t retVal = 0;
+    while ( *s != 0 ) { ++retVal; ++s; }
+    return retVal;
+    }
+
+template<typename CharT>
+void test ( const CharT *s ) {
+    typedef std::basic_string_view<CharT> SV;
+//  I'd love to do this, but it would require traits::length() to be noexcept
+//  LIBCPP_ASSERT_NOEXCEPT(SV(s));
+
+    SV sv1 ( s );
+    assert ( sv1.size() == StrLen( s ));
+    assert ( sv1.data() == s );
+    }
+
+
+int main(int, char**) {
+
+    test ( "QBCDE" );
+    test ( "A" );
+    test ( "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"QBCDE" );
+    test ( L"A" );
+    test ( L"" );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"QBCDE" );
+    test ( u"A" );
+    test ( u"" );
+
+    test ( U"QBCDE" );
+    test ( U"A" );
+    test ( U"" );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    constexpr std::basic_string_view<char, constexpr_char_traits<char>> sv1 ( "ABCDE" );
+    static_assert ( sv1.size() == 5, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_ptr_len.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_ptr_len.pass.cpp
new file mode 100644
index 0000000..8d48f90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_ptr_len.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+//  constexpr basic_string_view(const _CharT* _s, size_type _len)
+//      : __data (_s), __size(_len) {}
+
+#include <string_view>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename CharT>
+void test ( const CharT *s, size_t sz ) {
+    {
+    typedef std::basic_string_view<CharT> SV;
+    LIBCPP_ASSERT_NOEXCEPT(SV(s, sz));
+
+    SV sv1 ( s, sz );
+    assert ( sv1.size() == sz );
+    assert ( sv1.data() == s );
+    }
+}
+
+int main(int, char**) {
+
+    test ( "QBCDE", 5 );
+    test ( "QBCDE", 2 );
+    test ( "", 0 );
+#if TEST_STD_VER > 11
+    {
+    constexpr const char *s = "QBCDE";
+    constexpr std::basic_string_view<char> sv1 ( s, 2 );
+    static_assert ( sv1.size() == 2, "" );
+    static_assert ( sv1.data() == s, "" );
+    }
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"QBCDE", 5 );
+    test ( L"QBCDE", 2 );
+    test ( L"", 0 );
+#if TEST_STD_VER > 11
+    {
+    constexpr const wchar_t *s = L"QBCDE";
+    constexpr std::basic_string_view<wchar_t> sv1 ( s, 2 );
+    static_assert ( sv1.size() == 2, "" );
+    static_assert ( sv1.data() == s, "" );
+    }
+#endif
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+#if TEST_STD_VER >= 11
+    test ( u"QBCDE", 5 );
+    test ( u"QBCDE", 2 );
+    test ( u"", 0 );
+#if TEST_STD_VER > 11
+    {
+    constexpr const char16_t *s = u"QBCDE";
+    constexpr std::basic_string_view<char16_t> sv1 ( s, 2 );
+    static_assert ( sv1.size() == 2, "" );
+    static_assert ( sv1.data() == s, "" );
+    }
+#endif
+
+    test ( U"QBCDE", 5 );
+    test ( U"QBCDE", 2 );
+    test ( U"", 0 );
+#if TEST_STD_VER > 11
+    {
+    constexpr const char32_t *s = U"QBCDE";
+    constexpr std::basic_string_view<char32_t> sv1 ( s, 2 );
+    static_assert ( sv1.size() == 2, "" );
+    static_assert ( sv1.data() == s, "" );
+    }
+#endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_range.pass.cpp
new file mode 100644
index 0000000..a645827
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_range.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string_view>
+
+//  template <class Range>
+//  constexpr basic_string_view(Range&& range);
+
+#include <string_view>
+#include <array>
+#include <cassert>
+#include <iterator>
+#include <ranges>
+#include <type_traits>
+#include <vector>
+
+#include "constexpr_char_traits.h"
+#include "make_string.h"
+#include "test_iterators.h"
+#include "test_range.h"
+
+template<class CharT>
+constexpr void test() {
+  auto data = MAKE_STRING_VIEW(CharT, "test");
+  std::array<CharT, 4> arr;
+  for(int i = 0; i < 4; ++i) {
+    arr[i] = data[i];
+  }
+  auto sv = std::basic_string_view<CharT>(arr);
+
+  ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<CharT>);
+  assert(sv.size() == arr.size());
+  assert(sv.data() == arr.data());
+}
+
+constexpr bool test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+  test<char8_t>();
+  test<char16_t>();
+  test<char32_t>();
+
+  {
+    struct NonConstConversionOperator {
+      const char* data_ = "test";
+      constexpr const char* begin() const { return data_; }
+      constexpr const char* end() const { return data_ + 4; }
+      constexpr operator std::basic_string_view<char>() { return "NonConstConversionOp"; }
+    };
+
+    NonConstConversionOperator nc;
+    std::string_view sv = nc;
+    assert(sv == "NonConstConversionOp");
+    static_assert(!std::is_constructible_v<std::string_view,
+                                           const NonConstConversionOperator&>); // conversion operator is non-const
+  }
+
+  {
+    struct ConstConversionOperator {
+      const char* data_ = "test";
+      constexpr const char* begin() const { return data_; }
+      constexpr const char* end() const { return data_ + 4; }
+      constexpr operator std::basic_string_view<char>() const { return "ConstConversionOp"; }
+    };
+    ConstConversionOperator cv;
+    std::basic_string_view<char> sv = cv;
+    assert(sv == "ConstConversionOp");
+  }
+
+  struct DeletedConversionOperator {
+    const char* data_ = "test";
+    constexpr const char* begin() const { return data_; }
+    constexpr const char* end() const { return data_ + 4; }
+    operator std::basic_string_view<char>() = delete;
+  };
+
+  struct DeletedConstConversionOperator {
+    const char* data_ = "test";
+    constexpr const char* begin() const { return data_; }
+    constexpr const char* end() const { return data_ + 4; }
+    operator std::basic_string_view<char>() const = delete;
+  };
+
+  static_assert(std::is_constructible_v<std::string_view, DeletedConversionOperator>);
+  static_assert(std::is_constructible_v<std::string_view, const DeletedConversionOperator>);
+  static_assert(std::is_constructible_v<std::string_view, DeletedConstConversionOperator>);
+  static_assert(std::is_constructible_v<std::string_view, const DeletedConstConversionOperator>);
+
+  // Test that we're not trying to use the type's conversion operator to string_view in the constructor.
+  {
+    const DeletedConversionOperator d;
+    std::basic_string_view<char> csv = std::basic_string_view<char>(d);
+    assert(csv == "test");
+  }
+
+  {
+    DeletedConstConversionOperator dc;
+    std::basic_string_view<char> sv = std::basic_string_view<char>(dc);
+    assert(sv == "test");
+  }
+
+  return true;
+}
+
+static_assert(std::is_constructible_v<std::string_view, std::vector<char>&>);
+static_assert(std::is_constructible_v<std::string_view, const std::vector<char>&>);
+static_assert(std::is_constructible_v<std::string_view, std::vector<char>&&>);
+static_assert(std::is_constructible_v<std::string_view, const std::vector<char>&&>);
+
+using SizedButNotContiguousRange = std::ranges::subrange<random_access_iterator<char*>>;
+static_assert(!std::ranges::contiguous_range<SizedButNotContiguousRange>);
+static_assert(std::ranges::sized_range<SizedButNotContiguousRange>);
+static_assert(!std::is_constructible_v<std::string_view, SizedButNotContiguousRange>);
+
+using ContiguousButNotSizedRange = std::ranges::subrange<contiguous_iterator<char*>, sentinel_wrapper<contiguous_iterator<char*>>, std::ranges::subrange_kind::unsized>;
+static_assert(std::ranges::contiguous_range<ContiguousButNotSizedRange>);
+static_assert(!std::ranges::sized_range<ContiguousButNotSizedRange>);
+static_assert(!std::is_constructible_v<std::string_view, ContiguousButNotSizedRange>);
+
+static_assert(!std::is_constructible_v<std::string_view, std::vector<char16_t>>); // different CharT
+
+struct WithStringViewConversionOperator {
+  char* begin() const;
+  char* end() const;
+  operator std::string_view() const { return {}; }
+};
+
+static_assert(std::is_constructible_v<std::string_view, WithStringViewConversionOperator>); // lvalue
+static_assert(std::is_constructible_v<std::string_view, const WithStringViewConversionOperator&>); // const lvalue
+static_assert(std::is_constructible_v<std::string_view, WithStringViewConversionOperator&&>); // rvalue
+
+template <class CharTraits>
+struct WithTraitsType {
+  typename CharTraits::char_type* begin() const;
+  typename CharTraits::char_type* end() const;
+  using traits_type = CharTraits;
+};
+
+using CCT = constexpr_char_traits<char>;
+static_assert(std::is_constructible_v<std::string_view, WithTraitsType<std::char_traits<char>>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::is_constructible_v<std::wstring_view, WithTraitsType<std::char_traits<wchar_t>>>);
+#endif
+static_assert(std::is_constructible_v<std::basic_string_view<char, CCT>, WithTraitsType<CCT>>);
+static_assert(!std::is_constructible_v<std::string_view, WithTraitsType<CCT>>);  // wrong traits type
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(!std::is_constructible_v<std::wstring_view, WithTraitsType<std::char_traits<char>>>);  // wrong traits type
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+void test_throwing() {
+  struct ThrowingData {
+    char* begin() const { return nullptr; }
+    char* end() const { return nullptr; }
+    char* data() const { throw 42; return nullptr; }
+  };
+  try {
+    ThrowingData x;
+    (void) std::string_view(x);
+    assert(false);
+  } catch (int i) {
+    assert(i == 42);
+  }
+
+  struct ThrowingSize {
+    char* begin() const { return nullptr; }
+    char* end() const { return nullptr; }
+    size_t size() const { throw 42; return 0; }
+  };
+  try {
+    ThrowingSize x;
+    (void) std::string_view(x);
+    assert(false);
+  } catch (int i) {
+    assert(i == 42);
+  }
+}
+#endif
+
+static_assert(!std::is_convertible_v<std::vector<char>, std::string_view>);
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  test_throwing();
+#endif
+
+  return 0;
+}
+
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string.pass.cpp
new file mode 100644
index 0000000..b30a8a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class Allocator>
+// basic_string_view(const basic_string<_CharT, _Traits, Allocator>& _str) noexcept
+
+#include <string_view>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct dummy_char_traits : public std::char_traits<char> {};
+
+template<typename CharT, typename Traits>
+void test ( const std::basic_string<CharT, Traits> &str ) {
+    typedef std::basic_string_view<CharT, Traits> SV;
+    ASSERT_NOEXCEPT(SV(str));
+
+    SV sv1 ( str );
+    assert ( sv1.size() == str.size());
+    assert ( sv1.data() == str.data());
+}
+
+int main(int, char**) {
+
+    test ( std::string("QBCDE") );
+    test ( std::string("") );
+    test ( std::string() );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( std::wstring(L"QBCDE") );
+    test ( std::wstring(L"") );
+    test ( std::wstring() );
+#endif
+
+#ifndef TEST_HAS_NO_CHAR8_T
+    test ( std::u8string{u8"QBCDE"} );
+    test ( std::u8string{u8""} );
+    test ( std::u8string{} );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( std::u16string{u"QBCDE"} );
+    test ( std::u16string{u""} );
+    test ( std::u16string{} );
+
+    test ( std::u32string{U"QBCDE"} );
+    test ( std::u32string{U""} );
+    test ( std::u32string{} );
+#endif
+
+    test ( std::basic_string<char, dummy_char_traits>("QBCDE") );
+    test ( std::basic_string<char, dummy_char_traits>("") );
+    test ( std::basic_string<char, dummy_char_traits>() );
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string1.compile.fail.cpp
new file mode 100644
index 0000000..e4cf136
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string1.compile.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class Allocator>
+// basic_string_view(const basic_string<_CharT, _Traits, Allocator>& _str) noexcept
+
+#include <string_view>
+#include <string>
+#include <cassert>
+
+struct dummy_char_traits : public std::char_traits<char> {};
+
+int main(int, char**) {
+    using string_view = std::basic_string_view<char>;
+    using string      = std::              basic_string     <char, dummy_char_traits>;
+
+    {
+    string s{"QBCDE"};
+    string_view sv1 ( s );
+    assert ( sv1.size() == s.size());
+    assert ( sv1.data() == s.data());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string2.compile.fail.cpp
new file mode 100644
index 0000000..30540ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/from_string2.compile.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class Allocator>
+// basic_string_view(const basic_string<_CharT, _Traits, Allocator>& _str) noexcept
+
+#include <string_view>
+#include <string>
+#include <cassert>
+
+struct dummy_char_traits : public std::char_traits<char> {};
+
+int main(int, char**) {
+    using string_view = std::basic_string_view<char, dummy_char_traits>;
+    using string      = std::              basic_string     <char>;
+
+    {
+    string s{"QBCDE"};
+    string_view sv1 ( s );
+    assert ( sv1.size() == s.size());
+    assert ( sv1.data() == s.data());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/implicit_deduction_guides.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/implicit_deduction_guides.pass.cpp
new file mode 100644
index 0000000..35c10da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/implicit_deduction_guides.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <string_view>
+
+// Test that the constructors offered by std::basic_string_view are formulated
+// so they're compatible with implicit deduction guides.
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+// Overloads
+// ---------------
+// (1)  basic_string_view() - NOT TESTED
+// (2)  basic_string_view(const basic_string_view&)
+// (3)  basic_string_view(const CharT*, size_type)
+// (4)  basic_string_view(const CharT*)
+int main(int, char**)
+{
+  { // Testing (1)
+    // Nothing to do. Cannot deduce without any arguments.
+  }
+  { // Testing (2)
+    const std::string_view sin("abc");
+    std::basic_string_view s(sin);
+    ASSERT_SAME_TYPE(decltype(s), std::string_view);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    using WSV = std::basic_string_view<wchar_t, constexpr_char_traits<wchar_t>>;
+    const WSV win(L"abcdef");
+    std::basic_string_view w(win);
+    ASSERT_SAME_TYPE(decltype(w), WSV);
+    assert(w == L"abcdef");
+#endif
+  }
+  { // Testing (3)
+    std::basic_string_view s("abc", 2);
+    ASSERT_SAME_TYPE(decltype(s), std::string_view);
+    assert(s == "ab");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string_view w(L"abcdef", 4);
+    ASSERT_SAME_TYPE(decltype(w), std::wstring_view);
+    assert(w == L"abcd");
+#endif
+  }
+  { // Testing (4)
+    std::basic_string_view s("abc");
+    ASSERT_SAME_TYPE(decltype(s), std::string_view);
+    assert(s == "abc");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::basic_string_view w(L"abcdef");
+    ASSERT_SAME_TYPE(decltype(w), std::wstring_view);
+    assert(w == L"abcdef");
+#endif
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/nullptr.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/nullptr.compile.pass.cpp
new file mode 100644
index 0000000..2517e77
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.cons/nullptr.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string_view>
+
+// basic_string_view(nullptr_t) = delete; // C++2b
+
+#include <string_view>
+#include <type_traits>
+
+static_assert(!std::is_convertible_v<decltype(nullptr), std::string_view>);
+static_assert(!std::is_constructible_v<std::string_view, decltype(nullptr)>);
+static_assert(!std::is_assignable_v<std::string_view, decltype(nullptr)>);
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/implicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/implicit.pass.cpp
new file mode 100644
index 0000000..c76c4a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/implicit.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <string_view>
+
+// basic_string_view
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <string_view>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    char const* str = "hello world";
+    std::basic_string_view sv(str);
+    ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<char>);
+  }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  {
+    wchar_t const* str = L"hello world";
+    std::basic_string_view sv(str);
+    ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<wchar_t>);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/iterator_sentinel.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/iterator_sentinel.pass.cpp
new file mode 100644
index 0000000..6b811f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/iterator_sentinel.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//  template <contiguous_iterator _It, sized_sentinel_for<_It> _End>
+//    basic_string_view(_It, _End) -> basic_string_view<iter_value_t<_It>>;
+
+#include <string_view>
+#include <cassert>
+
+#include "make_string.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template<class It, class Sentinel, class CharT>
+constexpr void test_ctad(std::basic_string_view<CharT> val) {
+  auto sv = std::basic_string_view(It(val.data()), Sentinel(It(val.data() + val.size())));
+  ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<CharT>);
+  assert(sv.data() == val.data());
+  assert(sv.size() == val.size());
+}
+
+template<class CharT>
+constexpr void test_with_char() {
+  const auto val = MAKE_STRING_VIEW(CharT, "test");
+  test_ctad<CharT*, CharT*>(val);
+  test_ctad<CharT*, const CharT*>(val);
+  test_ctad<const CharT*, CharT*>(val);
+  test_ctad<const CharT*, sized_sentinel<const CharT*>>(val);
+  test_ctad<contiguous_iterator<const CharT*>, contiguous_iterator<const CharT*>>(val);
+  test_ctad<contiguous_iterator<const CharT*>, sized_sentinel<contiguous_iterator<const CharT*>>>(val);
+}
+
+constexpr void test() {
+  test_with_char<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_with_char<wchar_t>();
+#endif
+  test_with_char<char8_t>();
+  test_with_char<char16_t>();
+  test_with_char<char32_t>();
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/range.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/range.pass.cpp
new file mode 100644
index 0000000..3284201
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.deduct/range.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string_view>
+
+//  template<class Range>
+//    basic_string_view(Range&&) -> basic_string_view<ranges::range_value_t<Range>>; // C++23
+
+#include <string_view>
+#include <cassert>
+
+#include "make_string.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+template<class CharT>
+void test() {
+  auto val = MAKE_STRING(CharT, "test");
+  auto sv = std::basic_string_view(val);
+  ASSERT_SAME_TYPE(decltype(sv), std::basic_string_view<CharT>);
+  assert(sv.size() == val.size());
+  assert(sv.data() == val.data());
+}
+
+void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+  test<char8_t>();
+  test<char16_t>();
+  test<char32_t>();
+  test<char>();
+
+  struct Widget {
+    const char16_t *data_ = u"foo";
+    contiguous_iterator<const char16_t*> begin() const { return contiguous_iterator<const char16_t*>(data_); }
+    contiguous_iterator<const char16_t*> end() const { return contiguous_iterator<const char16_t*>(data_ + 3); }
+  };
+  std::basic_string_view bsv = std::basic_string_view(Widget());
+  ASSERT_SAME_TYPE(decltype(bsv), std::basic_string_view<char16_t>);
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
+
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_char_size.pass.cpp
new file mode 100644
index 0000000..15f61ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_char_size.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find(charT c, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(c, pos));
+    assert(s.find(c, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + 1 <= s.size());
+}
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    assert(s.find(c) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + 1 <= s.size());
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test(S(""), 'c', 0, S::npos);
+    test(S(""), 'c', 1, S::npos);
+    test(S("abcde"), 'c', 0, 2);
+    test(S("abcde"), 'c', 1, 2);
+    test(S("abcde"), 'c', 2, 2);
+    test(S("abcde"), 'c', 4, S::npos);
+    test(S("abcde"), 'c', 5, S::npos);
+    test(S("abcde"), 'c', 6, S::npos);
+    test(S("abcdeabcde"), 'c', 0, 2);
+    test(S("abcdeabcde"), 'c', 1, 2);
+    test(S("abcdeabcde"), 'c', 5, 7);
+    test(S("abcdeabcde"), 'c', 9, S::npos);
+    test(S("abcdeabcde"), 'c', 10, S::npos);
+    test(S("abcdeabcde"), 'c', 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 0, 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 1, 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 10, 12);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 21, S::npos);
+
+    test(S(""), 'c', S::npos);
+    test(S("abcde"), 'c', 2);
+    test(S("abcdeabcde"), 'c', 2);
+    test(S("abcdeabcdeabcdeabcde"), 'c', 2);
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find( 'c', 0 ) == SV::npos, "" );
+    static_assert (sv1.find( 'c', 1 ) == SV::npos, "" );
+    static_assert (sv2.find( 'c', 0 ) == 2, "" );
+    static_assert (sv2.find( 'c', 1 ) == 2, "" );
+    static_assert (sv2.find( 'c', 2 ) == 2, "" );
+    static_assert (sv2.find( 'c', 3 ) == SV::npos, "" );
+    static_assert (sv2.find( 'c', 4 ) == SV::npos, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_char_size.pass.cpp
new file mode 100644
index 0000000..10a9271
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_char_size.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_first_not_of(charT c, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(c, pos));
+    assert(s.find_first_not_of(c, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(c));
+    assert(s.find_first_not_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test(S(""), 'q', 0, S::npos);
+    test(S(""), 'q', 1, S::npos);
+    test(S("kitcj"), 'q', 0, 0);
+    test(S("qkamf"), 'q', 1, 1);
+    test(S("nhmko"), 'q', 2, 2);
+    test(S("tpsaf"), 'q', 4, 4);
+    test(S("lahfb"), 'q', 5, S::npos);
+    test(S("irkhs"), 'q', 6, S::npos);
+    test(S("gmfhdaipsr"), 'q', 0, 0);
+    test(S("kantesmpgj"), 'q', 1, 1);
+    test(S("odaftiegpm"), 'q', 5, 5);
+    test(S("oknlrstdpi"), 'q', 9, 9);
+    test(S("eolhfgpjqk"), 'q', 10, S::npos);
+    test(S("pcdrofikas"), 'q', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'q', 0, 0);
+    test(S("bnrpehidofmqtcksjgla"), 'q', 1, 1);
+    test(S("jdmciepkaqgotsrfnhlb"), 'q', 10, 10);
+    test(S("jtdaefblsokrmhpgcnqi"), 'q', 19, 19);
+    test(S("hkbgspofltajcnedqmri"), 'q', 20, S::npos);
+    test(S("oselktgbcapndfjihrmq"), 'q', 21, S::npos);
+
+    test(S(""), 'q', S::npos);
+    test(S("q"), 'q', S::npos);
+    test(S("qqq"), 'q', S::npos);
+    test(S("csope"), 'q', 0);
+    test(S("gfsmthlkon"), 'q', 0);
+    test(S("laenfsbridchgotmkqpj"), 'q', 0);
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_first_not_of( 'q', 0 ) == SV::npos, "" );
+    static_assert (sv1.find_first_not_of( 'q', 1 ) == SV::npos, "" );
+    static_assert (sv2.find_first_not_of( 'q', 0 ) == 0, "" );
+    static_assert (sv2.find_first_not_of( 'q', 1 ) == 1, "" );
+    static_assert (sv2.find_first_not_of( 'q', 5 ) == SV::npos, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_pointer_size.pass.cpp
new file mode 100644
index 0000000..90da2a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_pointer_size.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_first_not_of(const charT* s, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str, pos));
+    assert(s.find_first_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    assert(s.find_first_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, 0);
+    test(S("qanej"), "dfkap", 0, 0);
+    test(S("clbao"), "ihqrfebgad", 0, 0);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, S::npos);
+    test(S("srdfq"), "", 1, 1);
+    test(S("oemth"), "ikcrq", 1, 1);
+    test(S("cdaih"), "dmajblfhsg", 1, 3);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, S::npos);
+    test(S("cshmd"), "", 2, 2);
+    test(S("lhcdo"), "oebqi", 2, 2);
+    test(S("qnsoh"), "kojhpmbsfe", 2, S::npos);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, S::npos);
+    test(S("fmtsp"), "", 4, 4);
+    test(S("khbpm"), "aobjd", 4, 4);
+    test(S("pbsji"), "pcbahntsje", 4, 4);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, S::npos);
+    test(S("eqmpa"), "", 5, S::npos);
+    test(S("omigs"), "kocgb", 5, S::npos);
+    test(S("onmje"), "fbslrjiqkm", 5, S::npos);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, S::npos);
+    test(S("schfa"), "", 6, S::npos);
+    test(S("igdsc"), "qngpd", 6, S::npos);
+    test(S("brqgo"), "rodhqklgmb", 6, S::npos);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, S::npos);
+    test(S("hcjitbfapl"), "", 0, 0);
+    test(S("daiprenocl"), "ashjd", 0, 2);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, 1);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, S::npos);
+    test(S("qpghtfbaji"), "", 1, 1);
+    test(S("gfshlcmdjr"), "nadkh", 1, 1);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 4);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, S::npos);
+    test(S("crnklpmegd"), "", 5, 5);
+    test(S("jsbtafedoc"), "prqgn", 5, 5);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 6);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, S::npos);
+    test(S("lmofqdhpki"), "", 9, 9);
+    test(S("hnefkqimca"), "rtjpa", 9, S::npos);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, 9);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, S::npos);
+    test(S("elgofjmbrq"), "", 10, S::npos);
+    test(S("mjqdgalkpc"), "dplqa", 10, S::npos);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, S::npos);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, S::npos);
+    test(S("eqsgalomhb"), "", 11, S::npos);
+    test(S("akiteljmoh"), "lofbc", 11, S::npos);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, S::npos);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, 1);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 3);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 11);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 13);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), "", 19, 19);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, S::npos);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", 0);
+    test(S("lahfb"), "irkhs", 0);
+    test(S("gmfhd"), "kantesmpgj", 2);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", S::npos);
+    test(S("eolhfgpjqk"), "", 0);
+    test(S("nbatdlmekr"), "bnrpe", 2);
+    test(S("jdmciepkaq"), "jtdaefblso", 2);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), "", 0);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 0);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 1);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_first_not_of( "",      0) == SV::npos, "" );
+    static_assert (sv1.find_first_not_of( "irkhs", 0) == SV::npos, "" );
+    static_assert (sv2.find_first_not_of( "",      0) == 0, "" );
+    static_assert (sv2.find_first_not_of( "gfsrt", 0) == 0, "" );
+    static_assert (sv2.find_first_not_of( "lecar", 0) == 1, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_pointer_size_size.pass.cpp
new file mode 100644
index 0000000..69cefa7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_pointer_size_size.pass.cpp
@@ -0,0 +1,397 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_first_not_of(const charT* s, size_type pos, size_type n) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str, pos, n));
+    assert(s.find_first_not_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, 0);
+    test(S("binja"), "gfsrt", 0, 0, 0);
+    test(S("latkm"), "pfsoc", 0, 1, 0);
+    test(S("lecfr"), "tpflm", 0, 2, 0);
+    test(S("eqkst"), "sgkec", 0, 4, 1);
+    test(S("cdafr"), "romds", 0, 5, 0);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, 0);
+    test(S("lbisk"), "pedfirsglo", 0, 1, 0);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, 0);
+    test(S("ehmja"), "dabckmepqj", 0, 9, 1);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, 0);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, 0);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, 0);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, 0);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, S::npos);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, S::npos);
+    test(S("clrgb"), "", 1, 0, 1);
+    test(S("tjmek"), "osmia", 1, 0, 1);
+    test(S("bgstp"), "ckonl", 1, 1, 1);
+    test(S("hstrk"), "ilcaj", 1, 2, 1);
+    test(S("kmspj"), "lasiq", 1, 4, 1);
+    test(S("tjboh"), "kfqmr", 1, 5, 1);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, 1);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, 1);
+    test(S("gfcql"), "skbgtahqej", 1, 5, 1);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 1);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 1);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, 1);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, 1);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, 3);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, S::npos);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, S::npos);
+    test(S("ndrhl"), "", 2, 0, 2);
+    test(S("mrecp"), "otkgb", 2, 0, 2);
+    test(S("qlasf"), "cqsjl", 2, 1, 2);
+    test(S("smaqd"), "dpifl", 2, 2, 2);
+    test(S("hjeni"), "oapht", 2, 4, 2);
+    test(S("ocmfj"), "cifts", 2, 5, 2);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, 2);
+    test(S("fklad"), "tpksqhamle", 2, 1, 2);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 3);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 3);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 2);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, 2);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, 2);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 2);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, S::npos);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, S::npos);
+    test(S("cjgao"), "", 4, 0, 4);
+    test(S("kjplq"), "mabns", 4, 0, 4);
+    test(S("herni"), "bdnrp", 4, 1, 4);
+    test(S("tadrb"), "scidp", 4, 2, 4);
+    test(S("pkfeo"), "agbjl", 4, 4, 4);
+    test(S("hoser"), "jfmpr", 4, 5, S::npos);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, 4);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, 4);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, 4);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, S::npos);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, S::npos);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, 4);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, 4);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, S::npos);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, S::npos);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, S::npos);
+    test(S("klopi"), "", 5, 0, S::npos);
+    test(S("dajhn"), "psthd", 5, 0, S::npos);
+    test(S("jbgno"), "rpmjd", 5, 1, S::npos);
+    test(S("hkjae"), "dfsmk", 5, 2, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, S::npos);
+    test(S("ktdor"), "kipnf", 5, 5, S::npos);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, S::npos);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, S::npos);
+    test(S("armql"), "pcdgltbrfj", 5, 5, S::npos);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, S::npos);
+    test(S("jcons"), "ledihrsgpf", 5, 10, S::npos);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, S::npos);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, S::npos);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, S::npos);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, S::npos);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, S::npos);
+    test(S("gajqn"), "", 6, 0, S::npos);
+    test(S("stedk"), "hrnat", 6, 0, S::npos);
+    test(S("tjkaf"), "gsqdt", 6, 1, S::npos);
+    test(S("dthpe"), "bspkd", 6, 2, S::npos);
+    test(S("klhde"), "ohcmb", 6, 4, S::npos);
+    test(S("bhlki"), "heatr", 6, 5, S::npos);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, S::npos);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, S::npos);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, S::npos);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, S::npos);
+    test(S("jblqp"), "njolbmspac", 6, 10, S::npos);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, S::npos);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, S::npos);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, S::npos);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, S::npos);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, S::npos);
+    test(S("jnkrfhotgl"), "", 0, 0, 0);
+    test(S("dltjfngbko"), "rqegt", 0, 0, 0);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, 0);
+    test(S("skrflobnqm"), "jqirk", 0, 2, 0);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, 0);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, 0);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, 0);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, 0);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, 2);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, 4);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, 0);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, 0);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, 0);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, 0);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, 1);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, S::npos);
+    test(S("shbcqnmoar"), "", 1, 0, 1);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, 1);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, 1);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 2);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, 1);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 4);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, 1);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, 1);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 3);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 1);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, 5);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, 1);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, 1);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, 5);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, 5);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, S::npos);
+    test(S("ectnhskflp"), "", 5, 0, 5);
+    test(S("fgtianblpq"), "pijag", 5, 0, 5);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, 5);
+    test(S("astedncjhk"), "qcloh", 5, 2, 5);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, 5);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 5);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, 5);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 6);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, 5);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 6);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, 5);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, 5);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, 5);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 6);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, 8);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, S::npos);
+    test(S("shoiedtcjb"), "", 9, 0, 9);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, 9);
+    test(S("dqmregkcfl"), "akmle", 9, 1, 9);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, 9);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, 9);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, S::npos);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, 9);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, 9);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, S::npos);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, 9);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, 9);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, 9);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, 9);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, 9);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, S::npos);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, S::npos);
+    test(S("ncjpmaekbs"), "", 10, 0, S::npos);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, S::npos);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, S::npos);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, S::npos);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, S::npos);
+    test(S("beanrfodgj"), "odpte", 10, 5, S::npos);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, S::npos);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, S::npos);
+}
+
+template <class S>
+void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, S::npos);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, S::npos);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, S::npos);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, S::npos);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, S::npos);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, S::npos);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, S::npos);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, S::npos);
+    test(S("cqjohampgd"), "", 11, 0, S::npos);
+    test(S("hobitmpsan"), "aocjb", 11, 0, S::npos);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, S::npos);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, S::npos);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, S::npos);
+    test(S("qghptonrea"), "eaqkl", 11, 5, S::npos);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, S::npos);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, S::npos);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, S::npos);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, S::npos);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, S::npos);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, S::npos);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, S::npos);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, S::npos);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, S::npos);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, S::npos);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, 0);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, 0);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, 0);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, 0);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, 0);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, 0);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, 0);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, 0);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, 0);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, 0);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, 0);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, 0);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, 0);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, 0);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, 11);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, S::npos);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, 1);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, 1);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, 1);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 2);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 2);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, 1);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, 1);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, 1);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, 1);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 3);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 2);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, 1);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, 1);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 2);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, 13);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, S::npos);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, 10);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, 10);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, 10);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, 10);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 11);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 10);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, 10);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, 10);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 10);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 11);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 10);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, 10);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, 10);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 11);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, 11);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, S::npos);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, 19);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, 19);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, 19);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, 19);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, 19);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, S::npos);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, 19);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, 19);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, 19);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, 19);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, 19);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, 19);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, 19);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, S::npos);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, S::npos);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, S::npos);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, S::npos);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, S::npos);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, S::npos);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, S::npos);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, S::npos);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, S::npos);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, S::npos);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, S::npos);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, S::npos);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, S::npos);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, S::npos);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, S::npos);
+}
+
+template <class S>
+void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, S::npos);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, S::npos);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, S::npos);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, S::npos);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, S::npos);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, S::npos);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, S::npos);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, S::npos);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, S::npos);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, S::npos);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, S::npos);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, S::npos);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, S::npos);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, S::npos);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, S::npos);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, S::npos);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, S::npos);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, S::npos);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, S::npos);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_first_not_of( "",      0, 0) == SV::npos, "" );
+    static_assert (sv1.find_first_not_of( "irkhs", 0, 5) == SV::npos, "" );
+    static_assert (sv2.find_first_not_of( "",      0, 0) == 0, "" );
+    static_assert (sv2.find_first_not_of( "gfsrt", 0, 5) == 0, "" );
+    static_assert (sv2.find_first_not_of( "lecar", 0, 5) == 1, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_string_view_size.pass.cpp
new file mode 100644
index 0000000..3067f17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_not_of_string_view_size.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// size_type find_first_not_of(const basic_string& str, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_not_of(str, pos));
+    assert(s.find_first_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    assert(s.find_first_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, 0);
+    test(S("qanej"), S("dfkap"), 0, 0);
+    test(S("clbao"), S("ihqrfebgad"), 0, 0);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, S::npos);
+    test(S("srdfq"), S(""), 1, 1);
+    test(S("oemth"), S("ikcrq"), 1, 1);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 3);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, S::npos);
+    test(S("cshmd"), S(""), 2, 2);
+    test(S("lhcdo"), S("oebqi"), 2, 2);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, S::npos);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, S::npos);
+    test(S("fmtsp"), S(""), 4, 4);
+    test(S("khbpm"), S("aobjd"), 4, 4);
+    test(S("pbsji"), S("pcbahntsje"), 4, 4);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, S::npos);
+    test(S("eqmpa"), S(""), 5, S::npos);
+    test(S("omigs"), S("kocgb"), 5, S::npos);
+    test(S("onmje"), S("fbslrjiqkm"), 5, S::npos);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), S(""), 6, S::npos);
+    test(S("igdsc"), S("qngpd"), 6, S::npos);
+    test(S("brqgo"), S("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), S(""), 0, 0);
+    test(S("daiprenocl"), S("ashjd"), 0, 2);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, 1);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, S::npos);
+    test(S("qpghtfbaji"), S(""), 1, 1);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, 1);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 4);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, S::npos);
+    test(S("crnklpmegd"), S(""), 5, 5);
+    test(S("jsbtafedoc"), S("prqgn"), 5, 5);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 6);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, S::npos);
+    test(S("lmofqdhpki"), S(""), 9, 9);
+    test(S("hnefkqimca"), S("rtjpa"), 9, S::npos);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 9);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, S::npos);
+    test(S("elgofjmbrq"), S(""), 10, S::npos);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, S::npos);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, S::npos);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), S(""), 11, S::npos);
+    test(S("akiteljmoh"), S("lofbc"), 11, S::npos);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, S::npos);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 1);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 3);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 11);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 13);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, 19);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, S::npos);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), 0);
+    test(S("lahfb"), S("irkhs"), 0);
+    test(S("gmfhd"), S("kantesmpgj"), 2);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), S::npos);
+    test(S("eolhfgpjqk"), S(""), 0);
+    test(S("nbatdlmekr"), S("bnrpe"), 2);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 2);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), 0);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 0);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 1);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_char_size.pass.cpp
new file mode 100644
index 0000000..ff6af09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_char_size.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_first_of(charT c, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(c, pos));
+    assert(s.find_first_of(c, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    assert(s.find_first_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test(S(""), 'e', 0, S::npos);
+    test(S(""), 'e', 1, S::npos);
+    test(S("kitcj"), 'e', 0, S::npos);
+    test(S("qkamf"), 'e', 1, S::npos);
+    test(S("nhmko"), 'e', 2, S::npos);
+    test(S("tpsaf"), 'e', 4, S::npos);
+    test(S("lahfb"), 'e', 5, S::npos);
+    test(S("irkhs"), 'e', 6, S::npos);
+    test(S("gmfhdaipsr"), 'e', 0, S::npos);
+    test(S("kantesmpgj"), 'e', 1, 4);
+    test(S("odaftiegpm"), 'e', 5, 6);
+    test(S("oknlrstdpi"), 'e', 9, S::npos);
+    test(S("eolhfgpjqk"), 'e', 10, S::npos);
+    test(S("pcdrofikas"), 'e', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'e', 0, 7);
+    test(S("bnrpehidofmqtcksjgla"), 'e', 1, 4);
+    test(S("jdmciepkaqgotsrfnhlb"), 'e', 10, S::npos);
+    test(S("jtdaefblsokrmhpgcnqi"), 'e', 19, S::npos);
+    test(S("hkbgspofltajcnedqmri"), 'e', 20, S::npos);
+    test(S("oselktgbcapndfjihrmq"), 'e', 21, S::npos);
+
+    test(S(""), 'e', S::npos);
+    test(S("csope"), 'e', 4);
+    test(S("gfsmthlkon"), 'e', S::npos);
+    test(S("laenfsbridchgotmkqpj"), 'e', 2);
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_first_of( 'e', 0 ) == SV::npos, "" );
+    static_assert (sv1.find_first_of( 'e', 1 ) == SV::npos, "" );
+    static_assert (sv2.find_first_of( 'q', 0 ) == SV::npos, "" );
+    static_assert (sv2.find_first_of( 'e', 1 ) == 4, "" );
+    static_assert (sv2.find_first_of( 'e', 5 ) == SV::npos, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_pointer_size.pass.cpp
new file mode 100644
index 0000000..01fef4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_pointer_size.pass.cpp
@@ -0,0 +1,171 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_first_of(const charT* s, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str, pos));
+    assert(s.find_first_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str));
+    assert(s.find_first_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, S::npos);
+    test(S("qanej"), "dfkap", 0, 1);
+    test(S("clbao"), "ihqrfebgad", 0, 2);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, 0);
+    test(S("srdfq"), "", 1, S::npos);
+    test(S("oemth"), "ikcrq", 1, S::npos);
+    test(S("cdaih"), "dmajblfhsg", 1, 1);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, 1);
+    test(S("cshmd"), "", 2, S::npos);
+    test(S("lhcdo"), "oebqi", 2, 4);
+    test(S("qnsoh"), "kojhpmbsfe", 2, 2);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, 2);
+    test(S("fmtsp"), "", 4, S::npos);
+    test(S("khbpm"), "aobjd", 4, S::npos);
+    test(S("pbsji"), "pcbahntsje", 4, S::npos);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, 4);
+    test(S("eqmpa"), "", 5, S::npos);
+    test(S("omigs"), "kocgb", 5, S::npos);
+    test(S("onmje"), "fbslrjiqkm", 5, S::npos);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, S::npos);
+    test(S("schfa"), "", 6, S::npos);
+    test(S("igdsc"), "qngpd", 6, S::npos);
+    test(S("brqgo"), "rodhqklgmb", 6, S::npos);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, S::npos);
+    test(S("hcjitbfapl"), "", 0, S::npos);
+    test(S("daiprenocl"), "ashjd", 0, 0);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, 0);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, 0);
+    test(S("qpghtfbaji"), "", 1, S::npos);
+    test(S("gfshlcmdjr"), "nadkh", 1, 3);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 1);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, 1);
+    test(S("crnklpmegd"), "", 5, S::npos);
+    test(S("jsbtafedoc"), "prqgn", 5, S::npos);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 5);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, 5);
+    test(S("lmofqdhpki"), "", 9, S::npos);
+    test(S("hnefkqimca"), "rtjpa", 9, 9);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, S::npos);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, 9);
+    test(S("elgofjmbrq"), "", 10, S::npos);
+    test(S("mjqdgalkpc"), "dplqa", 10, S::npos);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, S::npos);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, S::npos);
+    test(S("eqsgalomhb"), "", 11, S::npos);
+    test(S("akiteljmoh"), "lofbc", 11, S::npos);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, S::npos);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, 3);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, 3);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 10);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, 10);
+    test(S("niptglfbosehkamrdqcj"), "", 19, S::npos);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, S::npos);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", S::npos);
+    test(S("lahfb"), "irkhs", 2);
+    test(S("gmfhd"), "kantesmpgj", 0);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", 0);
+    test(S("eolhfgpjqk"), "", S::npos);
+    test(S("nbatdlmekr"), "bnrpe", 0);
+    test(S("jdmciepkaq"), "jtdaefblso", 0);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", 0);
+    test(S("gprdcokbnjhlsfmtieqa"), "", S::npos);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 1);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 0);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_first_of( "",      0) == SV::npos, "" );
+    static_assert (sv1.find_first_of( "irkhs", 0) == SV::npos, "" );
+    static_assert (sv2.find_first_of( "",      0) == SV::npos, "" );
+    static_assert (sv2.find_first_of( "gfsrt", 0) == SV::npos, "" );
+    static_assert (sv2.find_first_of( "lecar", 0) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_pointer_size_size.pass.cpp
new file mode 100644
index 0000000..af68f94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_pointer_size_size.pass.cpp
@@ -0,0 +1,397 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_first_of(const charT* s, size_type pos, size_type n) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str, pos, n));
+    assert(s.find_first_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, S::npos);
+    test(S("binja"), "gfsrt", 0, 0, S::npos);
+    test(S("latkm"), "pfsoc", 0, 1, S::npos);
+    test(S("lecfr"), "tpflm", 0, 2, S::npos);
+    test(S("eqkst"), "sgkec", 0, 4, 0);
+    test(S("cdafr"), "romds", 0, 5, 1);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, S::npos);
+    test(S("lbisk"), "pedfirsglo", 0, 1, S::npos);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, S::npos);
+    test(S("ehmja"), "dabckmepqj", 0, 9, 0);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, 1);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, S::npos);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, S::npos);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, S::npos);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, 0);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, 0);
+    test(S("clrgb"), "", 1, 0, S::npos);
+    test(S("tjmek"), "osmia", 1, 0, S::npos);
+    test(S("bgstp"), "ckonl", 1, 1, S::npos);
+    test(S("hstrk"), "ilcaj", 1, 2, S::npos);
+    test(S("kmspj"), "lasiq", 1, 4, 2);
+    test(S("tjboh"), "kfqmr", 1, 5, S::npos);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, S::npos);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, 3);
+    test(S("gfcql"), "skbgtahqej", 1, 5, S::npos);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 2);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 4);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, S::npos);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, S::npos);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, 1);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, 1);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, 1);
+    test(S("ndrhl"), "", 2, 0, S::npos);
+    test(S("mrecp"), "otkgb", 2, 0, S::npos);
+    test(S("qlasf"), "cqsjl", 2, 1, S::npos);
+    test(S("smaqd"), "dpifl", 2, 2, 4);
+    test(S("hjeni"), "oapht", 2, 4, S::npos);
+    test(S("ocmfj"), "cifts", 2, 5, 3);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, S::npos);
+    test(S("fklad"), "tpksqhamle", 2, 1, S::npos);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 2);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 2);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 3);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, S::npos);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, S::npos);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 3);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, 2);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, 2);
+    test(S("cjgao"), "", 4, 0, S::npos);
+    test(S("kjplq"), "mabns", 4, 0, S::npos);
+    test(S("herni"), "bdnrp", 4, 1, S::npos);
+    test(S("tadrb"), "scidp", 4, 2, S::npos);
+    test(S("pkfeo"), "agbjl", 4, 4, S::npos);
+    test(S("hoser"), "jfmpr", 4, 5, 4);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, S::npos);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, S::npos);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, S::npos);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, 4);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, 4);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, S::npos);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, S::npos);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, 4);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, 4);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, 4);
+    test(S("klopi"), "", 5, 0, S::npos);
+    test(S("dajhn"), "psthd", 5, 0, S::npos);
+    test(S("jbgno"), "rpmjd", 5, 1, S::npos);
+    test(S("hkjae"), "dfsmk", 5, 2, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, S::npos);
+    test(S("ktdor"), "kipnf", 5, 5, S::npos);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, S::npos);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, S::npos);
+    test(S("armql"), "pcdgltbrfj", 5, 5, S::npos);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, S::npos);
+    test(S("jcons"), "ledihrsgpf", 5, 10, S::npos);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, S::npos);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, S::npos);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, S::npos);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, S::npos);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, S::npos);
+    test(S("gajqn"), "", 6, 0, S::npos);
+    test(S("stedk"), "hrnat", 6, 0, S::npos);
+    test(S("tjkaf"), "gsqdt", 6, 1, S::npos);
+    test(S("dthpe"), "bspkd", 6, 2, S::npos);
+    test(S("klhde"), "ohcmb", 6, 4, S::npos);
+    test(S("bhlki"), "heatr", 6, 5, S::npos);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, S::npos);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, S::npos);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, S::npos);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, S::npos);
+    test(S("jblqp"), "njolbmspac", 6, 10, S::npos);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, S::npos);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, S::npos);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, S::npos);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, S::npos);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, S::npos);
+    test(S("jnkrfhotgl"), "", 0, 0, S::npos);
+    test(S("dltjfngbko"), "rqegt", 0, 0, S::npos);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, 8);
+    test(S("skrflobnqm"), "jqirk", 0, 2, 8);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, 1);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, 3);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, S::npos);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, 5);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, 0);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, 0);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, 1);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, S::npos);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, S::npos);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, 4);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, 0);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, 0);
+    test(S("shbcqnmoar"), "", 1, 0, S::npos);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, S::npos);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, S::npos);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 1);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, 4);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 1);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, S::npos);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, S::npos);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 1);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 4);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, 1);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, S::npos);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, S::npos);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, 1);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, 1);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, 1);
+    test(S("ectnhskflp"), "", 5, 0, S::npos);
+    test(S("fgtianblpq"), "pijag", 5, 0, S::npos);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, S::npos);
+    test(S("astedncjhk"), "qcloh", 5, 2, 6);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, S::npos);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 6);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, S::npos);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 5);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, 7);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 5);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, S::npos);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, S::npos);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, S::npos);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 5);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, 5);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, 5);
+    test(S("shoiedtcjb"), "", 9, 0, S::npos);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, S::npos);
+    test(S("dqmregkcfl"), "akmle", 9, 1, S::npos);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, S::npos);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, S::npos);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, 9);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, S::npos);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, S::npos);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, 9);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, S::npos);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, S::npos);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, S::npos);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, S::npos);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, S::npos);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, 9);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, 9);
+    test(S("ncjpmaekbs"), "", 10, 0, S::npos);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, S::npos);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, S::npos);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, S::npos);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, S::npos);
+    test(S("beanrfodgj"), "odpte", 10, 5, S::npos);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, S::npos);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, S::npos);
+}
+
+template <class S>
+void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, S::npos);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, S::npos);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, S::npos);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, S::npos);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, S::npos);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, S::npos);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, S::npos);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, S::npos);
+    test(S("cqjohampgd"), "", 11, 0, S::npos);
+    test(S("hobitmpsan"), "aocjb", 11, 0, S::npos);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, S::npos);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, S::npos);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, S::npos);
+    test(S("qghptonrea"), "eaqkl", 11, 5, S::npos);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, S::npos);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, S::npos);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, S::npos);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, S::npos);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, S::npos);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, S::npos);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, S::npos);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, S::npos);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, S::npos);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, S::npos);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, S::npos);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, S::npos);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, 4);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, 3);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, 3);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, 3);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, S::npos);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, 19);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, 2);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, 2);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, 2);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, S::npos);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, 16);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, 1);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, 0);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, 0);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, S::npos);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, S::npos);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, 6);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 1);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 1);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, 6);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, S::npos);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, 19);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, 4);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 1);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 1);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, S::npos);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, 7);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 1);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, 1);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, 1);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, S::npos);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, S::npos);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, 12);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, S::npos);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 10);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 15);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, S::npos);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, S::npos);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 11);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 10);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 11);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, S::npos);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, 18);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 10);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, 10);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, 10);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, S::npos);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, S::npos);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, S::npos);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, S::npos);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, S::npos);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, 19);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, S::npos);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, S::npos);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, S::npos);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, S::npos);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, S::npos);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, S::npos);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, S::npos);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, 19);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, 19);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, 19);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, S::npos);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, S::npos);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, S::npos);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, S::npos);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, S::npos);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, S::npos);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, S::npos);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, S::npos);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, S::npos);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, S::npos);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, S::npos);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, S::npos);
+}
+
+template <class S>
+void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, S::npos);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, S::npos);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, S::npos);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, S::npos);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, S::npos);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, S::npos);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, S::npos);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, S::npos);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, S::npos);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, S::npos);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, S::npos);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, S::npos);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, S::npos);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, S::npos);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, S::npos);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, S::npos);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, S::npos);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, S::npos);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, S::npos);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_first_of( "",      0, 0) == SV::npos, "" );
+    static_assert (sv1.find_first_of( "irkhs", 0, 5) == SV::npos, "" );
+    static_assert (sv2.find_first_of( "",      0, 0) == SV::npos, "" );
+    static_assert (sv2.find_first_of( "gfsrt", 0, 5) == SV::npos, "" );
+    static_assert (sv2.find_first_of( "lecar", 0, 5) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_string_view_size.pass.cpp
new file mode 100644
index 0000000..62bfe9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_first_of_string_view_size.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// size_type find_first_of(const basic_string_view& str, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str, pos));
+    assert(s.find_first_of(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_first_of(str));
+    assert(s.find_first_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, S::npos);
+    test(S("qanej"), S("dfkap"), 0, 1);
+    test(S("clbao"), S("ihqrfebgad"), 0, 2);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, 0);
+    test(S("srdfq"), S(""), 1, S::npos);
+    test(S("oemth"), S("ikcrq"), 1, S::npos);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 1);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, 1);
+    test(S("cshmd"), S(""), 2, S::npos);
+    test(S("lhcdo"), S("oebqi"), 2, 4);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, 2);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, 2);
+    test(S("fmtsp"), S(""), 4, S::npos);
+    test(S("khbpm"), S("aobjd"), 4, S::npos);
+    test(S("pbsji"), S("pcbahntsje"), 4, S::npos);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, 4);
+    test(S("eqmpa"), S(""), 5, S::npos);
+    test(S("omigs"), S("kocgb"), 5, S::npos);
+    test(S("onmje"), S("fbslrjiqkm"), 5, S::npos);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), S(""), 6, S::npos);
+    test(S("igdsc"), S("qngpd"), 6, S::npos);
+    test(S("brqgo"), S("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), S(""), 0, S::npos);
+    test(S("daiprenocl"), S("ashjd"), 0, 0);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, 0);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, 0);
+    test(S("qpghtfbaji"), S(""), 1, S::npos);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, 3);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 1);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, 1);
+    test(S("crnklpmegd"), S(""), 5, S::npos);
+    test(S("jsbtafedoc"), S("prqgn"), 5, S::npos);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 5);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, 5);
+    test(S("lmofqdhpki"), S(""), 9, S::npos);
+    test(S("hnefkqimca"), S("rtjpa"), 9, 9);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, S::npos);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, 9);
+    test(S("elgofjmbrq"), S(""), 10, S::npos);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, S::npos);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, S::npos);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), S(""), 11, S::npos);
+    test(S("akiteljmoh"), S("lofbc"), 11, S::npos);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, S::npos);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, 3);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, 3);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 10);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, 10);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, S::npos);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, S::npos);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, S::npos);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, S::npos);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, S::npos);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, S::npos);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), S::npos);
+    test(S("lahfb"), S("irkhs"), 2);
+    test(S("gmfhd"), S("kantesmpgj"), 0);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), 0);
+    test(S("eolhfgpjqk"), S(""), S::npos);
+    test(S("nbatdlmekr"), S("bnrpe"), 0);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 0);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), 0);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), S::npos);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 1);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 0);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_char_size.pass.cpp
new file mode 100644
index 0000000..1a3b937
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_char_size.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// size_type find_last_not_of(charT c, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(c, pos));
+    assert(s.find_last_not_of(c, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(c));
+    assert(s.find_last_not_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test(S(""), 'i', 0, S::npos);
+    test(S(""), 'i', 1, S::npos);
+    test(S("kitcj"), 'i', 0, 0);
+    test(S("qkamf"), 'i', 1, 1);
+    test(S("nhmko"), 'i', 2, 2);
+    test(S("tpsaf"), 'i', 4, 4);
+    test(S("lahfb"), 'i', 5, 4);
+    test(S("irkhs"), 'i', 6, 4);
+    test(S("gmfhdaipsr"), 'i', 0, 0);
+    test(S("kantesmpgj"), 'i', 1, 1);
+    test(S("odaftiegpm"), 'i', 5, 4);
+    test(S("oknlrstdpi"), 'i', 9, 8);
+    test(S("eolhfgpjqk"), 'i', 10, 9);
+    test(S("pcdrofikas"), 'i', 11, 9);
+    test(S("nbatdlmekrgcfqsophij"), 'i', 0, 0);
+    test(S("bnrpehidofmqtcksjgla"), 'i', 1, 1);
+    test(S("jdmciepkaqgotsrfnhlb"), 'i', 10, 10);
+    test(S("jtdaefblsokrmhpgcnqi"), 'i', 19, 18);
+    test(S("hkbgspofltajcnedqmri"), 'i', 20, 18);
+    test(S("oselktgbcapndfjihrmq"), 'i', 21, 19);
+
+    test(S(""), 'i', S::npos);
+    test(S("csope"), 'i', 4);
+    test(S("gfsmthlkon"), 'i', 9);
+    test(S("laenfsbridchgotmkqpj"), 'i', 19);
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_last_not_of( 'i', 0 ) == SV::npos, "" );
+    static_assert (sv1.find_last_not_of( 'i', 1 ) == SV::npos, "" );
+    static_assert (sv2.find_last_not_of( 'a', 0 ) == SV::npos, "" );
+    static_assert (sv2.find_last_not_of( 'a', 1 ) == 1, "" );
+    static_assert (sv2.find_last_not_of( 'e', 5 ) == 3, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_pointer_size.pass.cpp
new file mode 100644
index 0000000..ba59de8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_pointer_size.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_last_not_of(const charT* s, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str, pos));
+    assert(s.find_last_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    assert(s.find_last_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, 0);
+    test(S("qanej"), "dfkap", 0, 0);
+    test(S("clbao"), "ihqrfebgad", 0, 0);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, S::npos);
+    test(S("srdfq"), "", 1, 1);
+    test(S("oemth"), "ikcrq", 1, 1);
+    test(S("cdaih"), "dmajblfhsg", 1, 0);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, S::npos);
+    test(S("cshmd"), "", 2, 2);
+    test(S("lhcdo"), "oebqi", 2, 2);
+    test(S("qnsoh"), "kojhpmbsfe", 2, 1);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, S::npos);
+    test(S("fmtsp"), "", 4, 4);
+    test(S("khbpm"), "aobjd", 4, 4);
+    test(S("pbsji"), "pcbahntsje", 4, 4);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, S::npos);
+    test(S("eqmpa"), "", 5, 4);
+    test(S("omigs"), "kocgb", 5, 4);
+    test(S("onmje"), "fbslrjiqkm", 5, 4);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, S::npos);
+    test(S("schfa"), "", 6, 4);
+    test(S("igdsc"), "qngpd", 6, 4);
+    test(S("brqgo"), "rodhqklgmb", 6, S::npos);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, S::npos);
+    test(S("hcjitbfapl"), "", 0, 0);
+    test(S("daiprenocl"), "ashjd", 0, S::npos);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, S::npos);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, S::npos);
+    test(S("qpghtfbaji"), "", 1, 1);
+    test(S("gfshlcmdjr"), "nadkh", 1, 1);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 0);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, S::npos);
+    test(S("crnklpmegd"), "", 5, 5);
+    test(S("jsbtafedoc"), "prqgn", 5, 5);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 4);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, S::npos);
+    test(S("lmofqdhpki"), "", 9, 9);
+    test(S("hnefkqimca"), "rtjpa", 9, 8);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, 9);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, S::npos);
+    test(S("elgofjmbrq"), "", 10, 9);
+    test(S("mjqdgalkpc"), "dplqa", 10, 9);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, 9);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, S::npos);
+    test(S("eqsgalomhb"), "", 11, 9);
+    test(S("akiteljmoh"), "lofbc", 11, 9);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, 8);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, S::npos);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 0);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 9);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 9);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), "", 19, 19);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, 16);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, 19);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, 18);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, 19);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, 19);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, 19);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, 19);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", 4);
+    test(S("lahfb"), "irkhs", 4);
+    test(S("gmfhd"), "kantesmpgj", 4);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", S::npos);
+    test(S("eolhfgpjqk"), "", 9);
+    test(S("nbatdlmekr"), "bnrpe", 8);
+    test(S("jdmciepkaq"), "jtdaefblso", 9);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), "", 19);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 18);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 17);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_last_not_of( "",      0) == SV::npos, "" );
+    static_assert (sv1.find_last_not_of( "irkhs", 5) == SV::npos, "" );
+    static_assert (sv2.find_last_not_of( "",      0) == 0, "" );
+    static_assert (sv2.find_last_not_of( "gfsrt", 5) == 4, "" );
+    static_assert (sv2.find_last_not_of( "lecar", 5) == 3, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_pointer_size_size.pass.cpp
new file mode 100644
index 0000000..3719811
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_pointer_size_size.pass.cpp
@@ -0,0 +1,397 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_last_not_of(const charT* s, size_type pos, size_type n) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str, pos, n));
+    assert(s.find_last_not_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, 0);
+    test(S("binja"), "gfsrt", 0, 0, 0);
+    test(S("latkm"), "pfsoc", 0, 1, 0);
+    test(S("lecfr"), "tpflm", 0, 2, 0);
+    test(S("eqkst"), "sgkec", 0, 4, S::npos);
+    test(S("cdafr"), "romds", 0, 5, 0);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, 0);
+    test(S("lbisk"), "pedfirsglo", 0, 1, 0);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, 0);
+    test(S("ehmja"), "dabckmepqj", 0, 9, S::npos);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, 0);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, 0);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, 0);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, 0);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, S::npos);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, S::npos);
+    test(S("clrgb"), "", 1, 0, 1);
+    test(S("tjmek"), "osmia", 1, 0, 1);
+    test(S("bgstp"), "ckonl", 1, 1, 1);
+    test(S("hstrk"), "ilcaj", 1, 2, 1);
+    test(S("kmspj"), "lasiq", 1, 4, 1);
+    test(S("tjboh"), "kfqmr", 1, 5, 1);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, 1);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, 1);
+    test(S("gfcql"), "skbgtahqej", 1, 5, 1);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 1);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 1);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, 1);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, 1);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, S::npos);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, S::npos);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, S::npos);
+    test(S("ndrhl"), "", 2, 0, 2);
+    test(S("mrecp"), "otkgb", 2, 0, 2);
+    test(S("qlasf"), "cqsjl", 2, 1, 2);
+    test(S("smaqd"), "dpifl", 2, 2, 2);
+    test(S("hjeni"), "oapht", 2, 4, 2);
+    test(S("ocmfj"), "cifts", 2, 5, 2);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, 2);
+    test(S("fklad"), "tpksqhamle", 2, 1, 2);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 1);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 1);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 2);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, 2);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, 2);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 2);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, S::npos);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, S::npos);
+    test(S("cjgao"), "", 4, 0, 4);
+    test(S("kjplq"), "mabns", 4, 0, 4);
+    test(S("herni"), "bdnrp", 4, 1, 4);
+    test(S("tadrb"), "scidp", 4, 2, 4);
+    test(S("pkfeo"), "agbjl", 4, 4, 4);
+    test(S("hoser"), "jfmpr", 4, 5, 3);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, 4);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, 4);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, 4);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, 3);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, 2);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, 4);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, 4);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, 3);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, 2);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, S::npos);
+    test(S("klopi"), "", 5, 0, 4);
+    test(S("dajhn"), "psthd", 5, 0, 4);
+    test(S("jbgno"), "rpmjd", 5, 1, 4);
+    test(S("hkjae"), "dfsmk", 5, 2, 4);
+}
+
+template <class S>
+void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, 4);
+    test(S("ktdor"), "kipnf", 5, 5, 4);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, 4);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, 4);
+    test(S("armql"), "pcdgltbrfj", 5, 5, 3);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, 4);
+    test(S("jcons"), "ledihrsgpf", 5, 10, 3);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, 4);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, 4);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, 1);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, 2);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, S::npos);
+    test(S("gajqn"), "", 6, 0, 4);
+    test(S("stedk"), "hrnat", 6, 0, 4);
+    test(S("tjkaf"), "gsqdt", 6, 1, 4);
+    test(S("dthpe"), "bspkd", 6, 2, 4);
+    test(S("klhde"), "ohcmb", 6, 4, 4);
+    test(S("bhlki"), "heatr", 6, 5, 4);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, 4);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, 4);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, 4);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, 4);
+    test(S("jblqp"), "njolbmspac", 6, 10, 3);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, 4);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, 4);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, 1);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, S::npos);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, S::npos);
+    test(S("jnkrfhotgl"), "", 0, 0, 0);
+    test(S("dltjfngbko"), "rqegt", 0, 0, 0);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, 0);
+    test(S("skrflobnqm"), "jqirk", 0, 2, 0);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, 0);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, 0);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, 0);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, 0);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, S::npos);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, S::npos);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, 0);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, 0);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, 0);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, 0);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, S::npos);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, S::npos);
+    test(S("shbcqnmoar"), "", 1, 0, 1);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, 1);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, 1);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 0);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, 1);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 0);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, 1);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, 1);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 0);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 1);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, S::npos);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, 1);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, 1);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, S::npos);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, S::npos);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, S::npos);
+    test(S("ectnhskflp"), "", 5, 0, 5);
+    test(S("fgtianblpq"), "pijag", 5, 0, 5);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, 5);
+    test(S("astedncjhk"), "qcloh", 5, 2, 5);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, 5);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 5);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, 5);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 4);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, 5);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 3);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, 5);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, 5);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, 5);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 1);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, S::npos);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, S::npos);
+    test(S("shoiedtcjb"), "", 9, 0, 9);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, 9);
+    test(S("dqmregkcfl"), "akmle", 9, 1, 9);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, 9);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, 9);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, 8);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, 9);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, 9);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, 8);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, 9);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, 9);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, 9);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, 9);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, 9);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, 3);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, S::npos);
+    test(S("ncjpmaekbs"), "", 10, 0, 9);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, 9);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, 9);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, 9);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, 9);
+    test(S("beanrfodgj"), "odpte", 10, 5, 9);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, 9);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, 9);
+}
+
+template <class S>
+void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, 8);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, 9);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, 8);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, 9);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, 9);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, 7);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, 5);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, S::npos);
+    test(S("cqjohampgd"), "", 11, 0, 9);
+    test(S("hobitmpsan"), "aocjb", 11, 0, 9);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, 9);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, 9);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, 9);
+    test(S("qghptonrea"), "eaqkl", 11, 5, 7);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, 9);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, 9);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, 9);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, 7);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, 8);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, 9);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, 9);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, 8);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, S::npos);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, S::npos);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, 0);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, 0);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, 0);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, 0);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, 0);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, 0);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, 0);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, 0);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, 0);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, 0);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, 0);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, 0);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, 0);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, 0);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, S::npos);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, S::npos);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, 1);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, 1);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, 1);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 0);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 0);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, 1);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, 1);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, 1);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, 1);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 0);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 0);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, 1);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, 1);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 0);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, S::npos);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, S::npos);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, 10);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, 10);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, 10);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, 10);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 9);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 10);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, 10);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, 10);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 10);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 8);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 10);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, 10);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, 10);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 8);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, S::npos);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, S::npos);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, 19);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, 19);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, 19);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, 19);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, 19);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, 17);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, 19);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, 19);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, 19);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, 19);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, 19);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, 19);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, 19);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, 18);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, 7);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, S::npos);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, 19);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, 19);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, 19);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, 19);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, 18);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, 18);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, 19);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, 19);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, 18);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, 18);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, 17);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, 19);
+}
+
+template <class S>
+void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, 19);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, 19);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, 1);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, S::npos);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, 19);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, 19);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, 19);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, 19);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, 19);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, 19);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, 19);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, 19);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, 18);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, 19);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, 19);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, 19);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, 19);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, 19);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, 7);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_last_not_of( "",      0, 0) == SV::npos, "" );
+    static_assert (sv1.find_last_not_of( "irkhs", 0, 5) == SV::npos, "" );
+    static_assert (sv2.find_last_not_of( "",      0, 0) == 0, "" );
+    static_assert (sv2.find_last_not_of( "gfsrt", 5, 0) == 4, "" );
+    static_assert (sv2.find_last_not_of( "lecar", 5, 0) == 4, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_string_view_size.pass.cpp
new file mode 100644
index 0000000..5a2a319
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_not_of_string_view_size.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// size_type find_last_not_of(const basic_string& str, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str, pos));
+    assert(s.find_last_not_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_not_of(str));
+    assert(s.find_last_not_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, 0);
+    test(S("qanej"), S("dfkap"), 0, 0);
+    test(S("clbao"), S("ihqrfebgad"), 0, 0);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, S::npos);
+    test(S("srdfq"), S(""), 1, 1);
+    test(S("oemth"), S("ikcrq"), 1, 1);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 0);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, S::npos);
+    test(S("cshmd"), S(""), 2, 2);
+    test(S("lhcdo"), S("oebqi"), 2, 2);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, 1);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, S::npos);
+    test(S("fmtsp"), S(""), 4, 4);
+    test(S("khbpm"), S("aobjd"), 4, 4);
+    test(S("pbsji"), S("pcbahntsje"), 4, 4);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, S::npos);
+    test(S("eqmpa"), S(""), 5, 4);
+    test(S("omigs"), S("kocgb"), 5, 4);
+    test(S("onmje"), S("fbslrjiqkm"), 5, 4);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, S::npos);
+    test(S("schfa"), S(""), 6, 4);
+    test(S("igdsc"), S("qngpd"), 6, 4);
+    test(S("brqgo"), S("rodhqklgmb"), 6, S::npos);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, S::npos);
+    test(S("hcjitbfapl"), S(""), 0, 0);
+    test(S("daiprenocl"), S("ashjd"), 0, S::npos);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, S::npos);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, S::npos);
+    test(S("qpghtfbaji"), S(""), 1, 1);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, 1);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 0);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, S::npos);
+    test(S("crnklpmegd"), S(""), 5, 5);
+    test(S("jsbtafedoc"), S("prqgn"), 5, 5);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 4);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, S::npos);
+    test(S("lmofqdhpki"), S(""), 9, 9);
+    test(S("hnefkqimca"), S("rtjpa"), 9, 8);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 9);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, S::npos);
+    test(S("elgofjmbrq"), S(""), 10, 9);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, 9);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, 9);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, S::npos);
+    test(S("eqsgalomhb"), S(""), 11, 9);
+    test(S("akiteljmoh"), S("lofbc"), 11, 9);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, 8);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, S::npos);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, 0);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, 0);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, S::npos);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, S::npos);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, 1);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, 1);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 0);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, S::npos);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, 10);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 9);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 9);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, S::npos);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, 19);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 19);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 16);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, S::npos);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, 19);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, 18);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, 19);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, S::npos);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, 19);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, 19);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, 19);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), 4);
+    test(S("lahfb"), S("irkhs"), 4);
+    test(S("gmfhd"), S("kantesmpgj"), 4);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), S::npos);
+    test(S("eolhfgpjqk"), S(""), 9);
+    test(S("nbatdlmekr"), S("bnrpe"), 8);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 9);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), S::npos);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), 19);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 18);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 17);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_char_size.pass.cpp
new file mode 100644
index 0000000..6710620
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_char_size.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_last_of(charT c, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(c, pos));
+    assert(s.find_last_of(c, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(c));
+    assert(s.find_last_of(c) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test(S(""), 'm', 0, S::npos);
+    test(S(""), 'm', 1, S::npos);
+    test(S("kitcj"), 'm', 0, S::npos);
+    test(S("qkamf"), 'm', 1, S::npos);
+    test(S("nhmko"), 'm', 2, 2);
+    test(S("tpsaf"), 'm', 4, S::npos);
+    test(S("lahfb"), 'm', 5, S::npos);
+    test(S("irkhs"), 'm', 6, S::npos);
+    test(S("gmfhdaipsr"), 'm', 0, S::npos);
+    test(S("kantesmpgj"), 'm', 1, S::npos);
+    test(S("odaftiegpm"), 'm', 5, S::npos);
+    test(S("oknlrstdpi"), 'm', 9, S::npos);
+    test(S("eolhfgpjqk"), 'm', 10, S::npos);
+    test(S("pcdrofikas"), 'm', 11, S::npos);
+    test(S("nbatdlmekrgcfqsophij"), 'm', 0, S::npos);
+    test(S("bnrpehidofmqtcksjgla"), 'm', 1, S::npos);
+    test(S("jdmciepkaqgotsrfnhlb"), 'm', 10, 2);
+    test(S("jtdaefblsokrmhpgcnqi"), 'm', 19, 12);
+    test(S("hkbgspofltajcnedqmri"), 'm', 20, 17);
+    test(S("oselktgbcapndfjihrmq"), 'm', 21, 18);
+
+    test(S(""), 'm', S::npos);
+    test(S("csope"), 'm', S::npos);
+    test(S("gfsmthlkon"), 'm', 3);
+    test(S("laenfsbridchgotmkqpj"), 'm', 15);
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_last_of( 'i', 0 ) == SV::npos, "" );
+    static_assert (sv1.find_last_of( 'i', 1 ) == SV::npos, "" );
+    static_assert (sv2.find_last_of( 'a', 0 ) == 0, "" );
+    static_assert (sv2.find_last_of( 'a', 1 ) == 0, "" );
+    static_assert (sv2.find_last_of( 'e', 5 ) == 4, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_pointer_size.pass.cpp
new file mode 100644
index 0000000..a9f381c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_pointer_size.pass.cpp
@@ -0,0 +1,171 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_last_of(const charT* s, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos));
+    assert(s.find_last_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str));
+    assert(s.find_last_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, S::npos);
+    test(S(""), "laenf", 0, S::npos);
+    test(S(""), "pqlnkmbdjo", 0, S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "bjaht", 1, S::npos);
+    test(S(""), "hjlcmgpket", 1, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 1, S::npos);
+    test(S("fodgq"), "", 0, S::npos);
+    test(S("qanej"), "dfkap", 0, S::npos);
+    test(S("clbao"), "ihqrfebgad", 0, S::npos);
+    test(S("mekdn"), "ngtjfcalbseiqrphmkdo", 0, 0);
+    test(S("srdfq"), "", 1, S::npos);
+    test(S("oemth"), "ikcrq", 1, S::npos);
+    test(S("cdaih"), "dmajblfhsg", 1, 1);
+    test(S("qohtk"), "oqftjhdmkgsblacenirp", 1, 1);
+    test(S("cshmd"), "", 2, S::npos);
+    test(S("lhcdo"), "oebqi", 2, S::npos);
+    test(S("qnsoh"), "kojhpmbsfe", 2, 2);
+    test(S("pkrof"), "acbsjqogpltdkhinfrem", 2, 2);
+    test(S("fmtsp"), "", 4, S::npos);
+    test(S("khbpm"), "aobjd", 4, 2);
+    test(S("pbsji"), "pcbahntsje", 4, 3);
+    test(S("mprdj"), "fhepcrntkoagbmldqijs", 4, 4);
+    test(S("eqmpa"), "", 5, S::npos);
+    test(S("omigs"), "kocgb", 5, 3);
+    test(S("onmje"), "fbslrjiqkm", 5, 3);
+    test(S("oqmrj"), "jeidpcmalhfnqbgtrsko", 5, 4);
+    test(S("schfa"), "", 6, S::npos);
+    test(S("igdsc"), "qngpd", 6, 2);
+    test(S("brqgo"), "rodhqklgmb", 6, 4);
+    test(S("tnrph"), "thdjgafrlbkoiqcspmne", 6, 4);
+    test(S("hcjitbfapl"), "", 0, S::npos);
+    test(S("daiprenocl"), "ashjd", 0, 0);
+    test(S("litpcfdghe"), "mgojkldsqh", 0, 0);
+    test(S("aidjksrolc"), "imqnaghkfrdtlopbjesc", 0, 0);
+    test(S("qpghtfbaji"), "", 1, S::npos);
+    test(S("gfshlcmdjr"), "nadkh", 1, S::npos);
+    test(S("nkodajteqp"), "ofdrqmkebl", 1, 1);
+    test(S("gbmetiprqd"), "bdfjqgatlksriohemnpc", 1, 1);
+    test(S("crnklpmegd"), "", 5, S::npos);
+    test(S("jsbtafedoc"), "prqgn", 5, S::npos);
+    test(S("qnmodrtkeb"), "pejafmnokr", 5, 5);
+    test(S("cpebqsfmnj"), "odnqkgijrhabfmcestlp", 5, 5);
+    test(S("lmofqdhpki"), "", 9, S::npos);
+    test(S("hnefkqimca"), "rtjpa", 9, 9);
+    test(S("drtasbgmfp"), "ktsrmnqagd", 9, 7);
+    test(S("lsaijeqhtr"), "rtdhgcisbnmoaqkfpjle", 9, 9);
+    test(S("elgofjmbrq"), "", 10, S::npos);
+    test(S("mjqdgalkpc"), "dplqa", 10, 8);
+    test(S("kthqnfcerm"), "dkacjoptns", 10, 6);
+    test(S("dfsjhanorc"), "hqfimtrgnbekpdcsjalo", 10, 9);
+    test(S("eqsgalomhb"), "", 11, S::npos);
+    test(S("akiteljmoh"), "lofbc", 11, 8);
+    test(S("hlbdfreqjo"), "astoegbfpn", 11, 9);
+    test(S("taqobhlerg"), "pdgreqomsncafklhtibj", 11, 9);
+    test(S("snafbdlghrjkpqtoceim"), "", 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), "lbtqd", 0, S::npos);
+    test(S("pnracgfkjdiholtbqsem"), "tboimldpjh", 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), "slcerthdaiqjfnobgkpm", 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), "", 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), "aqibs", 1, S::npos);
+    test(S("rbtaqjhgkneisldpmfoc"), "gtfblmqinc", 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), "mkqpbtdalgniorhfescj", 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), "", 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), "pblas", 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), "arosdhcfme", 10, 10);
+    test(S("crsplifgtqedjohnabmk"), "blkhjeogicatqfnpdmsr", 10, 10);
+    test(S("niptglfbosehkamrdqcj"), "", 19, S::npos);
+    test(S("copqdhstbingamjfkler"), "djkqc", 19, 16);
+    test(S("mrtaefilpdsgocnhqbjk"), "lgokshjtpb", 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), "bqjhtkfepimcnsgrlado", 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), "", 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), "nocfa", 20, 19);
+    test(S("spocfaktqdbiejlhngmr"), "bgtajmiedc", 20, 18);
+    test(S("rphmlekgfscndtaobiqj"), "lsckfnqgdahejiopbtmr", 20, 19);
+    test(S("liatsqdoegkmfcnbhrpj"), "", 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), "gfsrt", 21, 12);
+    test(S("latkmisecnorjbfhqpdg"), "pfsocbhjtm", 21, 17);
+    test(S("lecfratdjkhnsmqpoigb"), "tpflmdnoicjgkberhqsa", 21, 19);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), "", S::npos);
+    test(S(""), "laenf", S::npos);
+    test(S(""), "pqlnkmbdjo", S::npos);
+    test(S(""), "qkamfogpnljdcshbreti", S::npos);
+    test(S("nhmko"), "", S::npos);
+    test(S("lahfb"), "irkhs", 2);
+    test(S("gmfhd"), "kantesmpgj", 1);
+    test(S("odaft"), "oknlrstdpiqmjbaghcfe", 4);
+    test(S("eolhfgpjqk"), "", S::npos);
+    test(S("nbatdlmekr"), "bnrpe", 9);
+    test(S("jdmciepkaq"), "jtdaefblso", 8);
+    test(S("hkbgspoflt"), "oselktgbcapndfjihrmq", 9);
+    test(S("gprdcokbnjhlsfmtieqa"), "", S::npos);
+    test(S("qjghlnftcaismkropdeb"), "bjaht", 19);
+    test(S("pnalfrdtkqcmojiesbhg"), "hjlcmgpket", 19);
+    test(S("pniotcfrhqsmgdkjbael"), "htaobedqikfplcgjsmrn", 19);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_last_of( "",      0) == SV::npos, "" );
+    static_assert (sv1.find_last_of( "irkhs", 5) == SV::npos, "" );
+    static_assert (sv2.find_last_of( "",      0) == SV::npos, "" );
+    static_assert (sv2.find_last_of( "gfsrt", 5) == SV::npos, "" );
+    static_assert (sv2.find_last_of( "lecar", 5) == 4, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_pointer_size_size.pass.cpp
new file mode 100644
index 0000000..85849c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_pointer_size_size.pass.cpp
@@ -0,0 +1,397 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find_last_of(const charT* s, size_type pos, size_type n) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos, n));
+    assert(s.find_last_of(str, pos, n) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0, S::npos);
+    test(S(""), "irkhs", 0, 0, S::npos);
+    test(S(""), "kante", 0, 1, S::npos);
+    test(S(""), "oknlr", 0, 2, S::npos);
+    test(S(""), "pcdro", 0, 4, S::npos);
+    test(S(""), "bnrpe", 0, 5, S::npos);
+    test(S(""), "jtdaefblso", 0, 0, S::npos);
+    test(S(""), "oselktgbca", 0, 1, S::npos);
+    test(S(""), "eqgaplhckj", 0, 5, S::npos);
+    test(S(""), "bjahtcmnlp", 0, 9, S::npos);
+    test(S(""), "hjlcmgpket", 0, 10, S::npos);
+    test(S(""), "htaobedqikfplcgjsmrn", 0, 0, S::npos);
+    test(S(""), "hpqiarojkcdlsgnmfetb", 0, 1, S::npos);
+    test(S(""), "dfkaprhjloqetcsimnbg", 0, 10, S::npos);
+    test(S(""), "ihqrfebgadntlpmjksoc", 0, 19, S::npos);
+    test(S(""), "ngtjfcalbseiqrphmkdo", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "lbtqd", 1, 0, S::npos);
+    test(S(""), "tboim", 1, 1, S::npos);
+    test(S(""), "slcer", 1, 2, S::npos);
+    test(S(""), "cbjfs", 1, 4, S::npos);
+    test(S(""), "aqibs", 1, 5, S::npos);
+    test(S(""), "gtfblmqinc", 1, 0, S::npos);
+    test(S(""), "mkqpbtdalg", 1, 1, S::npos);
+    test(S(""), "kphatlimcd", 1, 5, S::npos);
+    test(S(""), "pblasqogic", 1, 9, S::npos);
+    test(S(""), "arosdhcfme", 1, 10, S::npos);
+    test(S(""), "blkhjeogicatqfnpdmsr", 1, 0, S::npos);
+    test(S(""), "bmhineprjcoadgstflqk", 1, 1, S::npos);
+    test(S(""), "djkqcmetslnghpbarfoi", 1, 10, S::npos);
+    test(S(""), "lgokshjtpbemarcdqnfi", 1, 19, S::npos);
+    test(S(""), "bqjhtkfepimcnsgrlado", 1, 20, S::npos);
+    test(S("eaint"), "", 0, 0, S::npos);
+    test(S("binja"), "gfsrt", 0, 0, S::npos);
+    test(S("latkm"), "pfsoc", 0, 1, S::npos);
+    test(S("lecfr"), "tpflm", 0, 2, S::npos);
+    test(S("eqkst"), "sgkec", 0, 4, 0);
+    test(S("cdafr"), "romds", 0, 5, S::npos);
+    test(S("prbhe"), "qhjistlgmr", 0, 0, S::npos);
+    test(S("lbisk"), "pedfirsglo", 0, 1, S::npos);
+    test(S("hrlpd"), "aqcoslgrmk", 0, 5, S::npos);
+    test(S("ehmja"), "dabckmepqj", 0, 9, 0);
+    test(S("mhqgd"), "pqscrjthli", 0, 10, S::npos);
+    test(S("tgklq"), "kfphdcsjqmobliagtren", 0, 0, S::npos);
+    test(S("bocjs"), "rokpefncljibsdhqtagm", 0, 1, S::npos);
+    test(S("grbsd"), "afionmkphlebtcjqsgrd", 0, 10, S::npos);
+    test(S("ofjqr"), "aenmqplidhkofrjbctsg", 0, 19, 0);
+    test(S("btlfi"), "osjmbtcadhiklegrpqnf", 0, 20, 0);
+    test(S("clrgb"), "", 1, 0, S::npos);
+    test(S("tjmek"), "osmia", 1, 0, S::npos);
+    test(S("bgstp"), "ckonl", 1, 1, S::npos);
+    test(S("hstrk"), "ilcaj", 1, 2, S::npos);
+    test(S("kmspj"), "lasiq", 1, 4, S::npos);
+    test(S("tjboh"), "kfqmr", 1, 5, S::npos);
+    test(S("ilbcj"), "klnitfaobg", 1, 0, S::npos);
+    test(S("jkngf"), "gjhmdlqikp", 1, 1, S::npos);
+    test(S("gfcql"), "skbgtahqej", 1, 5, 0);
+    test(S("dqtlg"), "bjsdgtlpkf", 1, 9, 0);
+    test(S("bthpg"), "bjgfmnlkio", 1, 10, 0);
+    test(S("dgsnq"), "lbhepotfsjdqigcnamkr", 1, 0, S::npos);
+    test(S("rmfhp"), "tebangckmpsrqdlfojhi", 1, 1, S::npos);
+    test(S("jfdam"), "joflqbdkhtegimscpanr", 1, 10, 1);
+    test(S("edapb"), "adpmcohetfbsrjinlqkg", 1, 19, 1);
+    test(S("brfsm"), "iacldqjpfnogbsrhmetk", 1, 20, 1);
+    test(S("ndrhl"), "", 2, 0, S::npos);
+    test(S("mrecp"), "otkgb", 2, 0, S::npos);
+    test(S("qlasf"), "cqsjl", 2, 1, S::npos);
+    test(S("smaqd"), "dpifl", 2, 2, S::npos);
+    test(S("hjeni"), "oapht", 2, 4, 0);
+    test(S("ocmfj"), "cifts", 2, 5, 1);
+    test(S("hmftq"), "nmsckbgalo", 2, 0, S::npos);
+    test(S("fklad"), "tpksqhamle", 2, 1, S::npos);
+    test(S("dirnm"), "tpdrchmkji", 2, 5, 2);
+    test(S("hrgdc"), "ijagfkblst", 2, 9, 2);
+    test(S("ifakg"), "kpocsignjb", 2, 10, 0);
+    test(S("ebrgd"), "pecqtkjsnbdrialgmohf", 2, 0, S::npos);
+    test(S("rcjml"), "aiortphfcmkjebgsndql", 2, 1, S::npos);
+    test(S("peqmt"), "sdbkeamglhipojqftrcn", 2, 10, 1);
+    test(S("frehn"), "ljqncehgmfktroapidbs", 2, 19, 2);
+    test(S("tqolf"), "rtcfodilamkbenjghqps", 2, 20, 2);
+    test(S("cjgao"), "", 4, 0, S::npos);
+    test(S("kjplq"), "mabns", 4, 0, S::npos);
+    test(S("herni"), "bdnrp", 4, 1, S::npos);
+    test(S("tadrb"), "scidp", 4, 2, S::npos);
+    test(S("pkfeo"), "agbjl", 4, 4, S::npos);
+    test(S("hoser"), "jfmpr", 4, 5, 4);
+    test(S("kgrsp"), "rbpefghsmj", 4, 0, S::npos);
+    test(S("pgejb"), "apsfntdoqc", 4, 1, S::npos);
+    test(S("thlnq"), "ndkjeisgcl", 4, 5, 3);
+    test(S("nbmit"), "rnfpqatdeo", 4, 9, 4);
+    test(S("jgmib"), "bntjlqrfik", 4, 10, 4);
+    test(S("ncrfj"), "kcrtmpolnaqejghsfdbi", 4, 0, S::npos);
+    test(S("ncsik"), "lobheanpkmqidsrtcfgj", 4, 1, S::npos);
+    test(S("sgbfh"), "athdkljcnreqbgpmisof", 4, 10, 4);
+    test(S("dktbn"), "qkdmjialrscpbhefgont", 4, 19, 4);
+    test(S("fthqm"), "dmasojntqleribkgfchp", 4, 20, 4);
+    test(S("klopi"), "", 5, 0, S::npos);
+    test(S("dajhn"), "psthd", 5, 0, S::npos);
+    test(S("jbgno"), "rpmjd", 5, 1, S::npos);
+    test(S("hkjae"), "dfsmk", 5, 2, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S("gbhqo"), "skqne", 5, 4, 3);
+    test(S("ktdor"), "kipnf", 5, 5, 0);
+    test(S("ldprn"), "hmrnqdgifl", 5, 0, S::npos);
+    test(S("egmjk"), "fsmjcdairn", 5, 1, S::npos);
+    test(S("armql"), "pcdgltbrfj", 5, 5, 4);
+    test(S("cdhjo"), "aekfctpirg", 5, 9, 0);
+    test(S("jcons"), "ledihrsgpf", 5, 10, 4);
+    test(S("cbrkp"), "mqcklahsbtirgopefndj", 5, 0, S::npos);
+    test(S("fhgna"), "kmlthaoqgecrnpdbjfis", 5, 1, S::npos);
+    test(S("ejfcd"), "sfhbamcdptojlkrenqgi", 5, 10, 4);
+    test(S("kqjhe"), "pbniofmcedrkhlstgaqj", 5, 19, 4);
+    test(S("pbdjl"), "mongjratcskbhqiepfdl", 5, 20, 4);
+    test(S("gajqn"), "", 6, 0, S::npos);
+    test(S("stedk"), "hrnat", 6, 0, S::npos);
+    test(S("tjkaf"), "gsqdt", 6, 1, S::npos);
+    test(S("dthpe"), "bspkd", 6, 2, S::npos);
+    test(S("klhde"), "ohcmb", 6, 4, 2);
+    test(S("bhlki"), "heatr", 6, 5, 1);
+    test(S("lqmoh"), "pmblckedfn", 6, 0, S::npos);
+    test(S("mtqin"), "aceqmsrbik", 6, 1, S::npos);
+    test(S("dpqbr"), "lmbtdehjrn", 6, 5, 3);
+    test(S("kdhmo"), "teqmcrlgib", 6, 9, 3);
+    test(S("jblqp"), "njolbmspac", 6, 10, 4);
+    test(S("qmjgl"), "pofnhidklamecrbqjgst", 6, 0, S::npos);
+    test(S("rothp"), "jbhckmtgrqnosafedpli", 6, 1, S::npos);
+    test(S("ghknq"), "dobntpmqklicsahgjerf", 6, 10, 4);
+    test(S("eopfi"), "tpdshainjkbfoemlrgcq", 6, 19, 4);
+    test(S("dsnmg"), "oldpfgeakrnitscbjmqh", 6, 20, 4);
+    test(S("jnkrfhotgl"), "", 0, 0, S::npos);
+    test(S("dltjfngbko"), "rqegt", 0, 0, S::npos);
+    test(S("bmjlpkiqde"), "dashm", 0, 1, S::npos);
+    test(S("skrflobnqm"), "jqirk", 0, 2, S::npos);
+    test(S("jkpldtshrm"), "rckeg", 0, 4, S::npos);
+    test(S("ghasdbnjqo"), "jscie", 0, 5, S::npos);
+    test(S("igrkhpbqjt"), "efsphndliq", 0, 0, S::npos);
+    test(S("ikthdgcamf"), "gdicosleja", 0, 1, S::npos);
+    test(S("pcofgeniam"), "qcpjibosfl", 0, 5, 0);
+    test(S("rlfjgesqhc"), "lrhmefnjcq", 0, 9, 0);
+    test(S("itphbqsker"), "dtablcrseo", 0, 10, S::npos);
+    test(S("skjafcirqm"), "apckjsftedbhgomrnilq", 0, 0, S::npos);
+    test(S("tcqomarsfd"), "pcbrgflehjtiadnsokqm", 0, 1, S::npos);
+    test(S("rocfeldqpk"), "nsiadegjklhobrmtqcpf", 0, 10, S::npos);
+    test(S("cfpegndlkt"), "cpmajdqnolikhgsbretf", 0, 19, 0);
+    test(S("fqbtnkeasj"), "jcflkntmgiqrphdosaeb", 0, 20, 0);
+    test(S("shbcqnmoar"), "", 1, 0, S::npos);
+    test(S("bdoshlmfin"), "ontrs", 1, 0, S::npos);
+    test(S("khfrebnsgq"), "pfkna", 1, 1, S::npos);
+    test(S("getcrsaoji"), "ekosa", 1, 2, 1);
+    test(S("fjiknedcpq"), "anqhk", 1, 4, S::npos);
+    test(S("tkejgnafrm"), "jekca", 1, 5, 1);
+    test(S("jnakolqrde"), "ikemsjgacf", 1, 0, S::npos);
+    test(S("lcjptsmgbe"), "arolgsjkhm", 1, 1, S::npos);
+    test(S("itfsmcjorl"), "oftkbldhre", 1, 5, 1);
+    test(S("omchkfrjea"), "gbkqdoeftl", 1, 9, 0);
+    test(S("cigfqkated"), "sqcflrgtim", 1, 10, 1);
+    test(S("tscenjikml"), "fmhbkislrjdpanogqcet", 1, 0, S::npos);
+    test(S("qcpaemsinf"), "rnioadktqlgpbcjsmhef", 1, 1, S::npos);
+    test(S("gltkojeipd"), "oakgtnldpsefihqmjcbr", 1, 10, 1);
+    test(S("qistfrgnmp"), "gbnaelosidmcjqktfhpr", 1, 19, 1);
+    test(S("bdnpfcqaem"), "akbripjhlosndcmqgfet", 1, 20, 1);
+    test(S("ectnhskflp"), "", 5, 0, S::npos);
+    test(S("fgtianblpq"), "pijag", 5, 0, S::npos);
+    test(S("mfeqklirnh"), "jrckd", 5, 1, S::npos);
+    test(S("astedncjhk"), "qcloh", 5, 2, S::npos);
+    test(S("fhlqgcajbr"), "thlmp", 5, 4, 2);
+    test(S("epfhocmdng"), "qidmo", 5, 5, 4);
+    test(S("apcnsibger"), "lnegpsjqrd", 5, 0, S::npos);
+    test(S("aqkocrbign"), "rjqdablmfs", 5, 1, 5);
+    test(S("ijsmdtqgce"), "enkgpbsjaq", 5, 5, S::npos);
+    test(S("clobgsrken"), "kdsgoaijfh", 5, 9, 5);
+    test(S("jbhcfposld"), "trfqgmckbe", 5, 10, 4);
+    test(S("oqnpblhide"), "igetsracjfkdnpoblhqm", 5, 0, S::npos);
+    test(S("lroeasctif"), "nqctfaogirshlekbdjpm", 5, 1, S::npos);
+    test(S("bpjlgmiedh"), "csehfgomljdqinbartkp", 5, 10, 5);
+    test(S("pamkeoidrj"), "qahoegcmplkfsjbdnitr", 5, 19, 5);
+    test(S("espogqbthk"), "dpteiajrqmsognhlfbkc", 5, 20, 5);
+    test(S("shoiedtcjb"), "", 9, 0, S::npos);
+    test(S("ebcinjgads"), "tqbnh", 9, 0, S::npos);
+    test(S("dqmregkcfl"), "akmle", 9, 1, S::npos);
+    test(S("ngcrieqajf"), "iqfkm", 9, 2, 6);
+    test(S("qosmilgnjb"), "tqjsr", 9, 4, 8);
+    test(S("ikabsjtdfl"), "jplqg", 9, 5, 9);
+    test(S("ersmicafdh"), "oilnrbcgtj", 9, 0, S::npos);
+    test(S("fdnplotmgh"), "morkglpesn", 9, 1, 7);
+    test(S("fdbicojerm"), "dmicerngat", 9, 5, 9);
+    test(S("mbtafndjcq"), "radgeskbtc", 9, 9, 6);
+    test(S("mlenkpfdtc"), "ljikprsmqo", 9, 10, 5);
+    test(S("ahlcifdqgs"), "trqihkcgsjamfdbolnpe", 9, 0, S::npos);
+    test(S("bgjemaltks"), "lqmthbsrekajgnofcipd", 9, 1, 6);
+    test(S("pdhslbqrfc"), "jtalmedribkgqsopcnfh", 9, 10, 7);
+    test(S("dirhtsnjkc"), "spqfoiclmtagejbndkrh", 9, 19, 9);
+    test(S("dlroktbcja"), "nmotklspigjrdhcfaebq", 9, 20, 9);
+    test(S("ncjpmaekbs"), "", 10, 0, S::npos);
+    test(S("hlbosgmrak"), "hpmsd", 10, 0, S::npos);
+    test(S("pqfhsgilen"), "qnpor", 10, 1, 1);
+    test(S("gqtjsbdckh"), "otdma", 10, 2, 2);
+    test(S("cfkqpjlegi"), "efhjg", 10, 4, 7);
+    test(S("beanrfodgj"), "odpte", 10, 5, 7);
+    test(S("adtkqpbjfi"), "bctdgfmolr", 10, 0, S::npos);
+    test(S("iomkfthagj"), "oaklidrbqg", 10, 1, 1);
+}
+
+template <class S>
+void test2()
+{
+    test(S("sdpcilonqj"), "dnjfsagktr", 10, 5, 9);
+    test(S("gtfbdkqeml"), "nejaktmiqg", 10, 9, 8);
+    test(S("bmeqgcdorj"), "pjqonlebsf", 10, 10, 9);
+    test(S("etqlcanmob"), "dshmnbtolcjepgaikfqr", 10, 0, S::npos);
+    test(S("roqmkbdtia"), "iogfhpabtjkqlrnemcds", 10, 1, 8);
+    test(S("kadsithljf"), "ngridfabjsecpqltkmoh", 10, 10, 9);
+    test(S("sgtkpbfdmh"), "athmknplcgofrqejsdib", 10, 19, 9);
+    test(S("qgmetnabkl"), "ldobhmqcafnjtkeisgrp", 10, 20, 9);
+    test(S("cqjohampgd"), "", 11, 0, S::npos);
+    test(S("hobitmpsan"), "aocjb", 11, 0, S::npos);
+    test(S("tjehkpsalm"), "jbrnk", 11, 1, 1);
+    test(S("ngfbojitcl"), "tqedg", 11, 2, 7);
+    test(S("rcfkdbhgjo"), "nqskp", 11, 4, 3);
+    test(S("qghptonrea"), "eaqkl", 11, 5, 9);
+    test(S("hnprfgqjdl"), "reaoicljqm", 11, 0, S::npos);
+    test(S("hlmgabenti"), "lsftgajqpm", 11, 1, 1);
+    test(S("ofcjanmrbs"), "rlpfogmits", 11, 5, 7);
+    test(S("jqedtkornm"), "shkncmiaqj", 11, 9, 9);
+    test(S("rfedlasjmg"), "fpnatrhqgs", 11, 10, 9);
+    test(S("talpqjsgkm"), "sjclemqhnpdbgikarfot", 11, 0, S::npos);
+    test(S("lrkcbtqpie"), "otcmedjikgsfnqbrhpla", 11, 1, S::npos);
+    test(S("cipogdskjf"), "bonsaefdqiprkhlgtjcm", 11, 10, 9);
+    test(S("nqedcojahi"), "egpscmahijlfnkrodqtb", 11, 19, 9);
+    test(S("hefnrkmctj"), "kmqbfepjthgilscrndoa", 11, 20, 9);
+    test(S("atqirnmekfjolhpdsgcb"), "", 0, 0, S::npos);
+    test(S("echfkmlpribjnqsaogtd"), "prboq", 0, 0, S::npos);
+    test(S("qnhiftdgcleajbpkrosm"), "fjcqh", 0, 1, S::npos);
+    test(S("chamfknorbedjitgslpq"), "fmosa", 0, 2, S::npos);
+    test(S("njhqpibfmtlkaecdrgso"), "qdbok", 0, 4, S::npos);
+    test(S("ebnghfsqkprmdcljoiat"), "amslg", 0, 5, S::npos);
+    test(S("letjomsgihfrpqbkancd"), "smpltjneqb", 0, 0, S::npos);
+    test(S("nblgoipcrqeaktshjdmf"), "flitskrnge", 0, 1, S::npos);
+    test(S("cehkbngtjoiflqapsmrd"), "pgqihmlbef", 0, 5, S::npos);
+    test(S("mignapfoklbhcqjetdrs"), "cfpdqjtgsb", 0, 9, S::npos);
+    test(S("ceatbhlsqjgpnokfrmdi"), "htpsiaflom", 0, 10, S::npos);
+    test(S("ocihkjgrdelpfnmastqb"), "kpjfiaceghsrdtlbnomq", 0, 0, S::npos);
+    test(S("noelgschdtbrjfmiqkap"), "qhtbomidljgafneksprc", 0, 1, S::npos);
+    test(S("dkclqfombepritjnghas"), "nhtjobkcefldimpsaqgr", 0, 10, S::npos);
+    test(S("miklnresdgbhqcojftap"), "prabcjfqnoeskilmtgdh", 0, 19, 0);
+    test(S("htbcigojaqmdkfrnlsep"), "dtrgmchilkasqoebfpjn", 0, 20, 0);
+    test(S("febhmqtjanokscdirpgl"), "", 1, 0, S::npos);
+    test(S("loakbsqjpcrdhftniegm"), "sqome", 1, 0, S::npos);
+    test(S("reagphsqflbitdcjmkno"), "smfte", 1, 1, S::npos);
+    test(S("jitlfrqemsdhkopncabg"), "ciboh", 1, 2, 1);
+    test(S("mhtaepscdnrjqgbkifol"), "haois", 1, 4, 1);
+    test(S("tocesrfmnglpbjihqadk"), "abfki", 1, 5, S::npos);
+    test(S("lpfmctjrhdagneskbqoi"), "frdkocntmq", 1, 0, S::npos);
+    test(S("lsmqaepkdhncirbtjfgo"), "oasbpedlnr", 1, 1, S::npos);
+    test(S("epoiqmtldrabnkjhcfsg"), "kltqmhgand", 1, 5, S::npos);
+    test(S("emgasrilpknqojhtbdcf"), "gdtfjchpmr", 1, 9, 1);
+    test(S("hnfiagdpcklrjetqbsom"), "ponmcqblet", 1, 10, 1);
+    test(S("nsdfebgajhmtricpoklq"), "sgphqdnofeiklatbcmjr", 1, 0, S::npos);
+    test(S("atjgfsdlpobmeiqhncrk"), "ljqprsmigtfoneadckbh", 1, 1, S::npos);
+    test(S("sitodfgnrejlahcbmqkp"), "ligeojhafnkmrcsqtbdp", 1, 10, 1);
+    test(S("fraghmbiceknltjpqosd"), "lsimqfnjarbopedkhcgt", 1, 19, 1);
+    test(S("pmafenlhqtdbkirjsogc"), "abedmfjlghniorcqptks", 1, 20, 1);
+    test(S("pihgmoeqtnakrjslcbfd"), "", 10, 0, S::npos);
+    test(S("gjdkeprctqblnhiafsom"), "hqtoa", 10, 0, S::npos);
+    test(S("mkpnblfdsahrcqijteog"), "cahif", 10, 1, S::npos);
+    test(S("gckarqnelodfjhmbptis"), "kehis", 10, 2, 7);
+    test(S("gqpskidtbclomahnrjfe"), "kdlmh", 10, 4, 10);
+    test(S("pkldjsqrfgitbhmaecno"), "paeql", 10, 5, 6);
+    test(S("aftsijrbeklnmcdqhgop"), "aghoqiefnb", 10, 0, S::npos);
+    test(S("mtlgdrhafjkbiepqnsoc"), "jrbqaikpdo", 10, 1, 9);
+    test(S("pqgirnaefthokdmbsclj"), "smjonaeqcl", 10, 5, 5);
+    test(S("kpdbgjmtherlsfcqoina"), "eqbdrkcfah", 10, 9, 10);
+    test(S("jrlbothiknqmdgcfasep"), "kapmsienhf", 10, 10, 9);
+    test(S("mjogldqferckabinptsh"), "jpqotrlenfcsbhkaimdg", 10, 0, S::npos);
+    test(S("apoklnefbhmgqcdrisjt"), "jlbmhnfgtcqprikeados", 10, 1, S::npos);
+    test(S("ifeopcnrjbhkdgatmqls"), "stgbhfmdaljnpqoicker", 10, 10, 10);
+    test(S("ckqhaiesmjdnrgolbtpf"), "oihcetflbjagdsrkmqpn", 10, 19, 10);
+    test(S("bnlgapfimcoterskqdjh"), "adtclebmnpjsrqfkigoh", 10, 20, 10);
+    test(S("kgdlrobpmjcthqsafeni"), "", 19, 0, S::npos);
+    test(S("dfkechomjapgnslbtqir"), "beafg", 19, 0, S::npos);
+    test(S("rloadknfbqtgmhcsipje"), "iclat", 19, 1, 16);
+    test(S("mgjhkolrnadqbpetcifs"), "rkhnf", 19, 2, 7);
+    test(S("cmlfakiojdrgtbsphqen"), "clshq", 19, 4, 16);
+    test(S("kghbfipeomsntdalrqjc"), "dtcoj", 19, 5, 19);
+    test(S("eldiqckrnmtasbghjfpo"), "rqosnjmfth", 19, 0, S::npos);
+    test(S("abqjcfedgotihlnspkrm"), "siatdfqglh", 19, 1, 15);
+    test(S("qfbadrtjsimkolcenhpg"), "mrlshtpgjq", 19, 5, 17);
+    test(S("abseghclkjqifmtodrnp"), "adlcskgqjt", 19, 9, 16);
+    test(S("ibmsnlrjefhtdokacqpg"), "drshcjknaf", 19, 10, 16);
+    test(S("mrkfciqjebaponsthldg"), "etsaqroinghpkjdlfcbm", 19, 0, S::npos);
+    test(S("mjkticdeoqshpalrfbgn"), "sgepdnkqliambtrocfhj", 19, 1, 10);
+    test(S("rqnoclbdejgiphtfsakm"), "nlmcjaqgbsortfdihkpe", 19, 10, 19);
+    test(S("plkqbhmtfaeodjcrsing"), "racfnpmosldibqkghjet", 19, 19, 19);
+    test(S("oegalhmstjrfickpbndq"), "fjhdsctkqeiolagrnmbp", 19, 20, 19);
+    test(S("rdtgjcaohpblniekmsfq"), "", 20, 0, S::npos);
+    test(S("ofkqbnjetrmsaidphglc"), "ejanp", 20, 0, S::npos);
+    test(S("grkpahljcftesdmonqib"), "odife", 20, 1, 15);
+    test(S("jimlgbhfqkteospardcn"), "okaqd", 20, 2, 12);
+    test(S("gftenihpmslrjkqadcob"), "lcdbi", 20, 4, 19);
+    test(S("bmhldogtckrfsanijepq"), "fsqbj", 20, 5, 19);
+    test(S("nfqkrpjdesabgtlcmoih"), "bigdomnplq", 20, 0, S::npos);
+    test(S("focalnrpiqmdkstehbjg"), "apiblotgcd", 20, 1, 3);
+    test(S("rhqdspkmebiflcotnjga"), "acfhdenops", 20, 5, 19);
+    test(S("rahdtmsckfboqlpniegj"), "jopdeamcrk", 20, 9, 19);
+    test(S("fbkeiopclstmdqranjhg"), "trqncbkgmh", 20, 10, 19);
+    test(S("lifhpdgmbconstjeqark"), "tomglrkencbsfjqpihda", 20, 0, S::npos);
+}
+
+template <class S>
+void test3()
+{
+    test(S("pboqganrhedjmltsicfk"), "gbkhdnpoietfcmrslajq", 20, 1, 4);
+    test(S("klchabsimetjnqgorfpd"), "rtfnmbsglkjaichoqedp", 20, 10, 17);
+    test(S("sirfgmjqhctndbklaepo"), "ohkmdpfqbsacrtjnlgei", 20, 19, 19);
+    test(S("rlbdsiceaonqjtfpghkm"), "dlbrteoisgphmkncajfq", 20, 20, 19);
+    test(S("ecgdanriptblhjfqskom"), "", 21, 0, S::npos);
+    test(S("fdmiarlpgcskbhoteqjn"), "sjrlo", 21, 0, S::npos);
+    test(S("rlbstjqopignecmfadkh"), "qjpor", 21, 1, 6);
+    test(S("grjpqmbshektdolcafni"), "odhfn", 21, 2, 13);
+    test(S("sakfcohtqnibprjmlged"), "qtfin", 21, 4, 10);
+    test(S("mjtdglasihqpocebrfkn"), "hpqfo", 21, 5, 17);
+    test(S("okaplfrntghqbmeicsdj"), "fabmertkos", 21, 0, S::npos);
+    test(S("sahngemrtcjidqbklfpo"), "brqtgkmaej", 21, 1, 14);
+    test(S("dlmsipcnekhbgoaftqjr"), "nfrdeihsgl", 21, 5, 19);
+    test(S("ahegrmqnoiklpfsdbcjt"), "hlfrosekpi", 21, 9, 14);
+    test(S("hdsjbnmlegtkqripacof"), "atgbkrjdsm", 21, 10, 16);
+    test(S("pcnedrfjihqbalkgtoms"), "blnrptjgqmaifsdkhoec", 21, 0, S::npos);
+    test(S("qjidealmtpskrbfhocng"), "ctpmdahebfqjgknloris", 21, 1, 17);
+    test(S("qeindtagmokpfhsclrbj"), "apnkeqthrmlbfodiscgj", 21, 10, 17);
+    test(S("kpfegbjhsrnodltqciam"), "jdgictpframeoqlsbknh", 21, 19, 19);
+    test(S("hnbrcplsjfgiktoedmaq"), "qprlsfojamgndekthibc", 21, 20, 19);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find_last_of( "",      0, 0) == SV::npos, "" );
+    static_assert (sv1.find_last_of( "irkhs", 0, 5) == SV::npos, "" );
+    static_assert (sv2.find_last_of( "",      0, 0) == SV::npos, "" );
+    static_assert (sv2.find_last_of( "gfsrt", 5, 5) == SV::npos, "" );
+    static_assert (sv2.find_last_of( "lecar", 5, 5) == 4, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_string_view_size.pass.cpp
new file mode 100644
index 0000000..5c0ee64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_last_of_string_view_size.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// size_type find_last_of(const basic_string& str, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str, pos));
+    assert(s.find_last_of(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x < s.size());
+}
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find_last_of(str));
+    assert(s.find_last_of(str) == x);
+    if (x != S::npos)
+        assert(x < s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), S(""), 0, S::npos);
+    test(S(""), S("laenf"), 0, S::npos);
+    test(S(""), S("pqlnkmbdjo"), 0, S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("bjaht"), 1, S::npos);
+    test(S(""), S("hjlcmgpket"), 1, S::npos);
+    test(S(""), S("htaobedqikfplcgjsmrn"), 1, S::npos);
+    test(S("fodgq"), S(""), 0, S::npos);
+    test(S("qanej"), S("dfkap"), 0, S::npos);
+    test(S("clbao"), S("ihqrfebgad"), 0, S::npos);
+    test(S("mekdn"), S("ngtjfcalbseiqrphmkdo"), 0, 0);
+    test(S("srdfq"), S(""), 1, S::npos);
+    test(S("oemth"), S("ikcrq"), 1, S::npos);
+    test(S("cdaih"), S("dmajblfhsg"), 1, 1);
+    test(S("qohtk"), S("oqftjhdmkgsblacenirp"), 1, 1);
+    test(S("cshmd"), S(""), 2, S::npos);
+    test(S("lhcdo"), S("oebqi"), 2, S::npos);
+    test(S("qnsoh"), S("kojhpmbsfe"), 2, 2);
+    test(S("pkrof"), S("acbsjqogpltdkhinfrem"), 2, 2);
+    test(S("fmtsp"), S(""), 4, S::npos);
+    test(S("khbpm"), S("aobjd"), 4, 2);
+    test(S("pbsji"), S("pcbahntsje"), 4, 3);
+    test(S("mprdj"), S("fhepcrntkoagbmldqijs"), 4, 4);
+    test(S("eqmpa"), S(""), 5, S::npos);
+    test(S("omigs"), S("kocgb"), 5, 3);
+    test(S("onmje"), S("fbslrjiqkm"), 5, 3);
+    test(S("oqmrj"), S("jeidpcmalhfnqbgtrsko"), 5, 4);
+    test(S("schfa"), S(""), 6, S::npos);
+    test(S("igdsc"), S("qngpd"), 6, 2);
+    test(S("brqgo"), S("rodhqklgmb"), 6, 4);
+    test(S("tnrph"), S("thdjgafrlbkoiqcspmne"), 6, 4);
+    test(S("hcjitbfapl"), S(""), 0, S::npos);
+    test(S("daiprenocl"), S("ashjd"), 0, 0);
+    test(S("litpcfdghe"), S("mgojkldsqh"), 0, 0);
+    test(S("aidjksrolc"), S("imqnaghkfrdtlopbjesc"), 0, 0);
+    test(S("qpghtfbaji"), S(""), 1, S::npos);
+    test(S("gfshlcmdjr"), S("nadkh"), 1, S::npos);
+    test(S("nkodajteqp"), S("ofdrqmkebl"), 1, 1);
+    test(S("gbmetiprqd"), S("bdfjqgatlksriohemnpc"), 1, 1);
+    test(S("crnklpmegd"), S(""), 5, S::npos);
+    test(S("jsbtafedoc"), S("prqgn"), 5, S::npos);
+    test(S("qnmodrtkeb"), S("pejafmnokr"), 5, 5);
+    test(S("cpebqsfmnj"), S("odnqkgijrhabfmcestlp"), 5, 5);
+    test(S("lmofqdhpki"), S(""), 9, S::npos);
+    test(S("hnefkqimca"), S("rtjpa"), 9, 9);
+    test(S("drtasbgmfp"), S("ktsrmnqagd"), 9, 7);
+    test(S("lsaijeqhtr"), S("rtdhgcisbnmoaqkfpjle"), 9, 9);
+    test(S("elgofjmbrq"), S(""), 10, S::npos);
+    test(S("mjqdgalkpc"), S("dplqa"), 10, 8);
+    test(S("kthqnfcerm"), S("dkacjoptns"), 10, 6);
+    test(S("dfsjhanorc"), S("hqfimtrgnbekpdcsjalo"), 10, 9);
+    test(S("eqsgalomhb"), S(""), 11, S::npos);
+    test(S("akiteljmoh"), S("lofbc"), 11, 8);
+    test(S("hlbdfreqjo"), S("astoegbfpn"), 11, 9);
+    test(S("taqobhlerg"), S("pdgreqomsncafklhtibj"), 11, 9);
+    test(S("snafbdlghrjkpqtoceim"), S(""), 0, S::npos);
+    test(S("aemtbrgcklhndjisfpoq"), S("lbtqd"), 0, S::npos);
+    test(S("pnracgfkjdiholtbqsem"), S("tboimldpjh"), 0, 0);
+    test(S("dicfltehbsgrmojnpkaq"), S("slcerthdaiqjfnobgkpm"), 0, 0);
+    test(S("jlnkraeodhcspfgbqitm"), S(""), 1, S::npos);
+    test(S("lhosrngtmfjikbqpcade"), S("aqibs"), 1, S::npos);
+    test(S("rbtaqjhgkneisldpmfoc"), S("gtfblmqinc"), 1, 1);
+    test(S("gpifsqlrdkbonjtmheca"), S("mkqpbtdalgniorhfescj"), 1, 1);
+    test(S("hdpkobnsalmcfijregtq"), S(""), 10, S::npos);
+    test(S("jtlshdgqaiprkbcoenfm"), S("pblas"), 10, 10);
+    test(S("fkdrbqltsgmcoiphneaj"), S("arosdhcfme"), 10, 10);
+    test(S("crsplifgtqedjohnabmk"), S("blkhjeogicatqfnpdmsr"), 10, 10);
+    test(S("niptglfbosehkamrdqcj"), S(""), 19, S::npos);
+    test(S("copqdhstbingamjfkler"), S("djkqc"), 19, 16);
+    test(S("mrtaefilpdsgocnhqbjk"), S("lgokshjtpb"), 19, 19);
+    test(S("kojatdhlcmigpbfrqnes"), S("bqjhtkfepimcnsgrlado"), 19, 19);
+    test(S("eaintpchlqsbdgrkjofm"), S(""), 20, S::npos);
+    test(S("gjnhidfsepkrtaqbmclo"), S("nocfa"), 20, 19);
+    test(S("spocfaktqdbiejlhngmr"), S("bgtajmiedc"), 20, 18);
+    test(S("rphmlekgfscndtaobiqj"), S("lsckfnqgdahejiopbtmr"), 20, 19);
+    test(S("liatsqdoegkmfcnbhrpj"), S(""), 21, S::npos);
+    test(S("binjagtfldkrspcomqeh"), S("gfsrt"), 21, 12);
+    test(S("latkmisecnorjbfhqpdg"), S("pfsocbhjtm"), 21, 17);
+    test(S("lecfratdjkhnsmqpoigb"), S("tpflmdnoicjgkberhqsa"), 21, 19);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), S(""), S::npos);
+    test(S(""), S("laenf"), S::npos);
+    test(S(""), S("pqlnkmbdjo"), S::npos);
+    test(S(""), S("qkamfogpnljdcshbreti"), S::npos);
+    test(S("nhmko"), S(""), S::npos);
+    test(S("lahfb"), S("irkhs"), 2);
+    test(S("gmfhd"), S("kantesmpgj"), 1);
+    test(S("odaft"), S("oknlrstdpiqmjbaghcfe"), 4);
+    test(S("eolhfgpjqk"), S(""), S::npos);
+    test(S("nbatdlmekr"), S("bnrpe"), 9);
+    test(S("jdmciepkaq"), S("jtdaefblso"), 8);
+    test(S("hkbgspoflt"), S("oselktgbcapndfjihrmq"), 9);
+    test(S("gprdcokbnjhlsfmtieqa"), S(""), S::npos);
+    test(S("qjghlnftcaismkropdeb"), S("bjaht"), 19);
+    test(S("pnalfrdtkqcmojiesbhg"), S("hjlcmgpket"), 19);
+    test(S("pniotcfrhqsmgdkjbael"), S("htaobedqikfplcgjsmrn"), 19);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_pointer_size.pass.cpp
new file mode 100644
index 0000000..ecd0b15
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_pointer_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find(const charT* s, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str, pos));
+    assert(s.find(str, pos) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type n = S::traits_type::length(str);
+        assert(pos <= x && x + n <= s.size());
+    }
+}
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str));
+    assert(s.find(str) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type n = S::traits_type::length(str);
+        assert(0 <= x && x + n <= s.size());
+    }
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0);
+    test(S(""), "abcde", 0, S::npos);
+    test(S(""), "abcdeabcde", 0, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S(""), "", 1, S::npos);
+    test(S(""), "abcde", 1, S::npos);
+    test(S(""), "abcdeabcde", 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 0, 0);
+    test(S("abcde"), "abcde", 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcde"), "", 1, 1);
+    test(S("abcde"), "abcde", 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 2, 2);
+    test(S("abcde"), "abcde", 2, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, S::npos);
+    test(S("abcde"), "", 4, 4);
+    test(S("abcde"), "abcde", 4, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, S::npos);
+    test(S("abcde"), "", 5, 5);
+    test(S("abcde"), "abcde", 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcde"), "", 6, S::npos);
+    test(S("abcde"), "abcde", 6, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, S::npos);
+    test(S("abcdeabcde"), "", 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcdeabcde"), "", 1, 1);
+    test(S("abcdeabcde"), "abcde", 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcdeabcde"), "", 5, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcdeabcde"), "", 9, 9);
+    test(S("abcdeabcde"), "abcde", 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, S::npos);
+    test(S("abcdeabcde"), "", 10, 10);
+    test(S("abcdeabcde"), "abcde", 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
+    test(S("abcdeabcde"), "", 11, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), "", 0);
+    test(S(""), "abcde", S::npos);
+    test(S(""), "abcdeabcde", S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcde"), "", 0);
+    test(S("abcde"), "abcde", 0);
+    test(S("abcde"), "abcdeabcde", S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcde"), "", 0);
+    test(S("abcdeabcde"), "abcde", 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find( "") == 0, "" );
+    static_assert (sv1.find( "abcde") == SV::npos, "" );
+    static_assert (sv2.find( "") == 0, "" );
+    static_assert (sv2.find( "abcde") == 0, "" );
+    static_assert (sv2.find( "abcde", 1) == SV::npos, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_pointer_size_size.pass.cpp
new file mode 100644
index 0000000..2e68e9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_pointer_size_size.pass.cpp
@@ -0,0 +1,398 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find(const charT* s, size_type pos, size_type n) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str, pos, n));
+    assert(s.find(str, pos, n) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + n <= s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0, 0);
+    test(S(""), "abcde", 0, 0, 0);
+    test(S(""), "abcde", 0, 1, S::npos);
+    test(S(""), "abcde", 0, 2, S::npos);
+    test(S(""), "abcde", 0, 4, S::npos);
+    test(S(""), "abcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 9, S::npos);
+    test(S(""), "abcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S(""), "", 1, 0, S::npos);
+    test(S(""), "abcde", 1, 0, S::npos);
+    test(S(""), "abcde", 1, 1, S::npos);
+    test(S(""), "abcde", 1, 2, S::npos);
+    test(S(""), "abcde", 1, 4, S::npos);
+    test(S(""), "abcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 0, S::npos);
+    test(S(""), "abcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 9, S::npos);
+    test(S(""), "abcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 0, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 1, 0);
+    test(S("abcde"), "abcde", 0, 2, 0);
+    test(S("abcde"), "abcde", 0, 4, 0);
+    test(S("abcde"), "abcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcde"), "", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 1, S::npos);
+    test(S("abcde"), "abcde", 1, 2, S::npos);
+    test(S("abcde"), "abcde", 1, 4, S::npos);
+    test(S("abcde"), "abcde", 1, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcde", 1, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 1, S::npos);
+    test(S("abcde"), "abcde", 2, 2, S::npos);
+    test(S("abcde"), "abcde", 2, 4, S::npos);
+    test(S("abcde"), "abcde", 2, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcde", 2, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 20, S::npos);
+    test(S("abcde"), "", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 1, S::npos);
+    test(S("abcde"), "abcde", 4, 2, S::npos);
+    test(S("abcde"), "abcde", 4, 4, S::npos);
+    test(S("abcde"), "abcde", 4, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcde", 4, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 20, S::npos);
+    test(S("abcde"), "", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 1, S::npos);
+    test(S("abcde"), "abcde", 5, 2, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S("abcde"), "abcde", 5, 4, S::npos);
+    test(S("abcde"), "abcde", 5, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcde", 5, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcde"), "", 6, 0, S::npos);
+    test(S("abcde"), "abcde", 6, 0, S::npos);
+    test(S("abcde"), "abcde", 6, 1, S::npos);
+    test(S("abcde"), "abcde", 6, 2, S::npos);
+    test(S("abcde"), "abcde", 6, 4, S::npos);
+    test(S("abcde"), "abcde", 6, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 0, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 1, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 5, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 0, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 20, S::npos);
+    test(S("abcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 1, 5);
+    test(S("abcdeabcde"), "abcde", 1, 2, 5);
+    test(S("abcdeabcde"), "abcde", 1, 4, 5);
+    test(S("abcdeabcde"), "abcde", 1, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcdeabcde"), "", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcde", 5, 2, 5);
+    test(S("abcdeabcde"), "abcde", 5, 4, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcdeabcde"), "", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 1, S::npos);
+    test(S("abcdeabcde"), "abcde", 9, 2, S::npos);
+    test(S("abcdeabcde"), "abcde", 9, 4, S::npos);
+    test(S("abcdeabcde"), "abcde", 9, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 20, S::npos);
+    test(S("abcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 1, S::npos);
+    test(S("abcdeabcde"), "abcde", 10, 2, S::npos);
+    test(S("abcdeabcde"), "abcde", 10, 4, S::npos);
+    test(S("abcdeabcde"), "abcde", 10, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 1, S::npos);
+}
+
+template <class S>
+void test2()
+{
+    test(S("abcdeabcde"), "abcdeabcde", 10, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, S::npos);
+    test(S("abcdeabcde"), "", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 1, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 2, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 4, S::npos);
+    test(S("abcdeabcde"), "abcde", 11, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 5, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 9, S::npos);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 0, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 1, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 10, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 2, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 4, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 5, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 5, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 9, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 10, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, 5);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 2, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 4, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 2, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 4, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 9, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 2, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 4, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 9, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0, 20);
+}
+
+template <class S>
+void test3()
+{
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 2, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 4, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 5, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 9, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 20, S::npos);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find( "",      0, 0 ) == 0, "" );
+    static_assert (sv1.find( "abcde", 0, 0 ) == 0, "" );
+    static_assert (sv1.find( "abcde", 0, 1 ) == SV::npos, "" );
+    static_assert (sv2.find( "",      0, 0 ) == 0, "" );
+    static_assert (sv2.find( "abcde", 0, 0 ) == 0, "" );
+    static_assert (sv2.find( "abcde", 0, 1 ) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_string_view_size.pass.cpp
new file mode 100644
index 0000000..d189578
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/find_string_view_size.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type find(const basic_string_view& str, size_type pos = 0) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str, pos));
+    assert(s.find(str, pos) == x);
+    if (x != S::npos)
+        assert(pos <= x && x + str.size() <= s.size());
+}
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.find(str));
+    assert(s.find(str) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + str.size() <= s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), S(""), 0, 0);
+    test(S(""), S("abcde"), 0, S::npos);
+    test(S(""), S("abcdeabcde"), 0, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S(""), S(""), 1, S::npos);
+    test(S(""), S("abcde"), 1, S::npos);
+    test(S(""), S("abcdeabcde"), 1, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 0, 0);
+    test(S("abcde"), S("abcde"), 0, 0);
+    test(S("abcde"), S("abcdeabcde"), 0, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcde"), S(""), 1, 1);
+    test(S("abcde"), S("abcde"), 1, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 1, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 2, 2);
+    test(S("abcde"), S("abcde"), 2, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 2, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos);
+    test(S("abcde"), S(""), 4, 4);
+    test(S("abcde"), S("abcde"), 4, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 4, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos);
+    test(S("abcde"), S(""), 5, 5);
+    test(S("abcde"), S("abcde"), 5, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 5, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcde"), S(""), 6, S::npos);
+    test(S("abcde"), S("abcde"), 6, S::npos);
+    test(S("abcde"), S("abcdeabcde"), 6, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos);
+    test(S("abcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcde"), S("abcde"), 1, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), S(""), 5, 5);
+    test(S("abcdeabcde"), S("abcde"), 5, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), S(""), 9, 9);
+    test(S("abcdeabcde"), S("abcde"), 9, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcde"), S("abcde"), 10, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), S(""), 11, S::npos);
+    test(S("abcdeabcde"), S("abcde"), 11, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcde"), 11, S::npos);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 5);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, S::npos);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), S(""), 0);
+    test(S(""), S("abcde"), S::npos);
+    test(S(""), S("abcdeabcde"), S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcde"), S(""), 0);
+    test(S("abcde"), S("abcde"), 0);
+    test(S("abcde"), S("abcdeabcde"), S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcde"), S(""), 0);
+    test(S("abcdeabcde"), S("abcde"), 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.find(sv1) == 0, "" );
+    static_assert (sv1.find(sv2) == SV::npos, "" );
+    static_assert (sv2.find(sv1) == 0, "" );
+    static_assert (sv2.find(sv2) == 0, "" );
+    static_assert (sv2.find(sv2, 1 ) == SV::npos, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_char_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_char_size.pass.cpp
new file mode 100644
index 0000000..96a0be5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_char_size.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+// constexpr size_type rfind(charT c, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(c, pos));
+    assert(s.rfind(c, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + 1 <= s.size());
+}
+
+template <class S>
+void
+test(const S& s, typename S::value_type c, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(c));
+    assert(s.rfind(c) == x);
+    if (x != S::npos)
+        assert(x + 1 <= s.size());
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test(S(""), 'b', 0, S::npos);
+    test(S(""), 'b', 1, S::npos);
+    test(S("abcde"), 'b', 0, S::npos);
+    test(S("abcde"), 'b', 1, 1);
+    test(S("abcde"), 'b', 2, 1);
+    test(S("abcde"), 'b', 4, 1);
+    test(S("abcde"), 'b', 5, 1);
+    test(S("abcde"), 'b', 6, 1);
+    test(S("abcdeabcde"), 'b', 0, S::npos);
+    test(S("abcdeabcde"), 'b', 1, 1);
+    test(S("abcdeabcde"), 'b', 5, 1);
+    test(S("abcdeabcde"), 'b', 9, 6);
+    test(S("abcdeabcde"), 'b', 10, 6);
+    test(S("abcdeabcde"), 'b', 11, 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 0, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 10, 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 19, 16);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 20, 16);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 21, 16);
+
+    test(S(""), 'b', S::npos);
+    test(S("abcde"), 'b', 1);
+    test(S("abcdeabcde"), 'b', 6);
+    test(S("abcdeabcdeabcdeabcde"), 'b', 16);
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.rfind( 'b', 0 ) == SV::npos, "" );
+    static_assert (sv1.rfind( 'b', 1 ) == SV::npos, "" );
+    static_assert (sv2.rfind( 'b', 0 ) == SV::npos, "" );
+    static_assert (sv2.rfind( 'b', 1 ) == 1, "" );
+    static_assert (sv2.rfind( 'b', 2 ) == 1, "" );
+    static_assert (sv2.rfind( 'b', 3 ) == 1, "" );
+    static_assert (sv2.rfind( 'b', 4 ) == 1, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_pointer_size.pass.cpp
new file mode 100644
index 0000000..6dfde17
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_pointer_size.pass.cpp
@@ -0,0 +1,177 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+// constexpr size_type rfind(const charT* s, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+     typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos));
+    assert(s.rfind(str, pos) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type n = S::traits_type::length(str);
+        assert(x <= pos && x + n <= s.size());
+    }
+}
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str));
+    assert(s.rfind(str) == x);
+    if (x != S::npos)
+    {
+        typename S::size_type pos = s.size();
+        typename S::size_type n = S::traits_type::length(str);
+        assert(x <= pos && x + n <= s.size());
+    }
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0);
+    test(S(""), "abcde", 0, S::npos);
+    test(S(""), "abcdeabcde", 0, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S(""), "", 1, 0);
+    test(S(""), "abcde", 1, S::npos);
+    test(S(""), "abcdeabcde", 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 0, 0);
+    test(S("abcde"), "abcde", 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcde"), "", 1, 1);
+    test(S("abcde"), "abcde", 1, 0);
+    test(S("abcde"), "abcdeabcde", 1, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcde"), "", 2, 2);
+    test(S("abcde"), "abcde", 2, 0);
+    test(S("abcde"), "abcdeabcde", 2, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, S::npos);
+    test(S("abcde"), "", 4, 4);
+    test(S("abcde"), "abcde", 4, 0);
+    test(S("abcde"), "abcdeabcde", 4, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, S::npos);
+    test(S("abcde"), "", 5, 5);
+    test(S("abcde"), "abcde", 5, 0);
+    test(S("abcde"), "abcdeabcde", 5, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcde"), "", 6, 5);
+    test(S("abcde"), "abcde", 6, 0);
+    test(S("abcde"), "abcdeabcde", 6, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, S::npos);
+    test(S("abcdeabcde"), "", 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, S::npos);
+    test(S("abcdeabcde"), "", 1, 1);
+    test(S("abcdeabcde"), "abcde", 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, S::npos);
+    test(S("abcdeabcde"), "", 5, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, S::npos);
+    test(S("abcdeabcde"), "", 9, 9);
+    test(S("abcdeabcde"), "abcde", 9, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, S::npos);
+    test(S("abcdeabcde"), "", 10, 10);
+    test(S("abcdeabcde"), "abcde", 10, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, S::npos);
+    test(S("abcdeabcde"), "", 11, 10);
+    test(S("abcdeabcde"), "abcde", 11, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), "", 0);
+    test(S(""), "abcde", S::npos);
+    test(S(""), "abcdeabcde", S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcde"), "", 5);
+    test(S("abcde"), "abcde", 0);
+    test(S("abcde"), "abcdeabcde", S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcde"), "", 10);
+    test(S("abcdeabcde"), "abcde", 5);
+    test(S("abcdeabcde"), "abcdeabcde", 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.rfind( "") == 0, "" );
+    static_assert (sv1.rfind( "abcde") == SV::npos, "" );
+    static_assert (sv2.rfind( "") == 5, "" );
+    static_assert (sv2.rfind( "abcde") == 0, "" );
+    static_assert (sv2.rfind( "abcde", 1) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_pointer_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_pointer_size_size.pass.cpp
new file mode 100644
index 0000000..509293b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_pointer_size_size.pass.cpp
@@ -0,0 +1,397 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+// constexpr size_type rfind(const charT* s, size_type pos, size_type n) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const typename S::value_type* str, typename S::size_type pos,
+      typename S::size_type n, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos, n));
+    assert(s.rfind(str, pos, n) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + n <= s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), "", 0, 0, 0);
+    test(S(""), "abcde", 0, 0, 0);
+    test(S(""), "abcde", 0, 1, S::npos);
+    test(S(""), "abcde", 0, 2, S::npos);
+    test(S(""), "abcde", 0, 4, S::npos);
+    test(S(""), "abcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcde", 0, 5, S::npos);
+    test(S(""), "abcdeabcde", 0, 9, S::npos);
+    test(S(""), "abcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S(""), "", 1, 0, 0);
+    test(S(""), "abcde", 1, 0, 0);
+    test(S(""), "abcde", 1, 1, S::npos);
+    test(S(""), "abcde", 1, 2, S::npos);
+    test(S(""), "abcde", 1, 4, S::npos);
+    test(S(""), "abcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 0, 0);
+    test(S(""), "abcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcde", 1, 5, S::npos);
+    test(S(""), "abcdeabcde", 1, 9, S::npos);
+    test(S(""), "abcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 0, 0);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 1, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S(""), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 0, 0);
+    test(S("abcde"), "abcde", 0, 1, 0);
+    test(S("abcde"), "abcde", 0, 2, 0);
+    test(S("abcde"), "abcde", 0, 4, 0);
+    test(S("abcde"), "abcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcde"), "abcdeabcde", 0, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcde"), "", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 0, 1);
+    test(S("abcde"), "abcde", 1, 1, 0);
+    test(S("abcde"), "abcde", 1, 2, 0);
+    test(S("abcde"), "abcde", 1, 4, 0);
+    test(S("abcde"), "abcde", 1, 5, 0);
+    test(S("abcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcde", 1, 1, 0);
+    test(S("abcde"), "abcdeabcde", 1, 5, 0);
+    test(S("abcde"), "abcdeabcde", 1, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcde"), "", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 0, 2);
+    test(S("abcde"), "abcde", 2, 1, 0);
+    test(S("abcde"), "abcde", 2, 2, 0);
+    test(S("abcde"), "abcde", 2, 4, 0);
+    test(S("abcde"), "abcde", 2, 5, 0);
+    test(S("abcde"), "abcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcde", 2, 1, 0);
+    test(S("abcde"), "abcdeabcde", 2, 5, 0);
+    test(S("abcde"), "abcdeabcde", 2, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 0, 2);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 2, 20, S::npos);
+    test(S("abcde"), "", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 0, 4);
+    test(S("abcde"), "abcde", 4, 1, 0);
+    test(S("abcde"), "abcde", 4, 2, 0);
+    test(S("abcde"), "abcde", 4, 4, 0);
+    test(S("abcde"), "abcde", 4, 5, 0);
+    test(S("abcde"), "abcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcde", 4, 1, 0);
+    test(S("abcde"), "abcdeabcde", 4, 5, 0);
+    test(S("abcde"), "abcdeabcde", 4, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 0, 4);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 4, 20, S::npos);
+    test(S("abcde"), "", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 0, 5);
+    test(S("abcde"), "abcde", 5, 1, 0);
+    test(S("abcde"), "abcde", 5, 2, 0);
+}
+
+template <class S>
+void test1()
+{
+    test(S("abcde"), "abcde", 5, 4, 0);
+    test(S("abcde"), "abcde", 5, 5, 0);
+    test(S("abcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcde", 5, 1, 0);
+    test(S("abcde"), "abcdeabcde", 5, 5, 0);
+    test(S("abcde"), "abcdeabcde", 5, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcde"), "", 6, 0, 5);
+    test(S("abcde"), "abcde", 6, 0, 5);
+    test(S("abcde"), "abcde", 6, 1, 0);
+    test(S("abcde"), "abcde", 6, 2, 0);
+    test(S("abcde"), "abcde", 6, 4, 0);
+    test(S("abcde"), "abcde", 6, 5, 0);
+    test(S("abcde"), "abcdeabcde", 6, 0, 5);
+    test(S("abcde"), "abcdeabcde", 6, 1, 0);
+    test(S("abcde"), "abcdeabcde", 6, 5, 0);
+    test(S("abcde"), "abcdeabcde", 6, 9, S::npos);
+    test(S("abcde"), "abcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 0, 5);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 1, 0);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 10, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 19, S::npos);
+    test(S("abcde"), "abcdeabcdeabcdeabcde", 6, 20, S::npos);
+    test(S("abcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, S::npos);
+    test(S("abcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcde", 1, 1, 0);
+    test(S("abcdeabcde"), "abcde", 1, 2, 0);
+    test(S("abcdeabcde"), "abcde", 1, 4, 0);
+    test(S("abcdeabcde"), "abcde", 1, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 5, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 1, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, S::npos);
+    test(S("abcdeabcde"), "", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcde", 5, 2, 5);
+    test(S("abcdeabcde"), "abcde", 5, 4, 5);
+    test(S("abcdeabcde"), "abcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 5, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 0, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 5, 20, S::npos);
+    test(S("abcdeabcde"), "", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcde", 9, 1, 5);
+    test(S("abcdeabcde"), "abcde", 9, 2, 5);
+    test(S("abcdeabcde"), "abcde", 9, 4, 5);
+    test(S("abcdeabcde"), "abcde", 9, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 9, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 0, 9);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 9, 20, S::npos);
+    test(S("abcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcde", 10, 1, 5);
+    test(S("abcdeabcde"), "abcde", 10, 2, 5);
+    test(S("abcdeabcde"), "abcde", 10, 4, 5);
+    test(S("abcdeabcde"), "abcde", 10, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 1, 5);
+}
+
+template <class S>
+void test2()
+{
+    test(S("abcdeabcde"), "abcdeabcde", 10, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 10, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, S::npos);
+    test(S("abcdeabcde"), "", 11, 0, 10);
+    test(S("abcdeabcde"), "abcde", 11, 0, 10);
+    test(S("abcdeabcde"), "abcde", 11, 1, 5);
+    test(S("abcdeabcde"), "abcde", 11, 2, 5);
+    test(S("abcdeabcde"), "abcde", 11, 4, 5);
+    test(S("abcdeabcde"), "abcde", 11, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 5, 5);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 9, 0);
+    test(S("abcdeabcde"), "abcdeabcde", 11, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 0, 10);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 1, 5);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 10, 0);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 19, S::npos);
+    test(S("abcdeabcde"), "abcdeabcdeabcdeabcde", 11, 20, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), "", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 2, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 4, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 9, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 0, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 2, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 4, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 1, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 5, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 9, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 1, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 0, 1);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 1, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 2, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 4, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 5, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 0, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 1, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 10, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 2, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 4, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 19, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 19, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 0, 19);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 19, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 2, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 4, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 20, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 20, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 0, 20);
+}
+
+template <class S>
+void test3()
+{
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 20, 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), "", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 2, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 4, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcde", 21, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 5, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 9, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcde", 21, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 0, 20);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 1, 15);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), "abcdeabcdeabcdeabcde", 21, 20, 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    test2<S>();
+    test3<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.rfind( "",      0, 0 ) == 0, "" );
+    static_assert (sv1.rfind( "abcde", 0, 0 ) == 0, "" );
+    static_assert (sv1.rfind( "abcde", 0, 1 ) == SV::npos, "" );
+    static_assert (sv2.rfind( "",      0, 0 ) == 0, "" );
+    static_assert (sv2.rfind( "abcde", 0, 0 ) == 0, "" );
+    static_assert (sv2.rfind( "abcde", 0, 1 ) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_string_view_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_string_view_size.pass.cpp
new file mode 100644
index 0000000..ad92d76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.find/rfind_string_view_size.pass.cpp
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr size_type rfind(const basic_string& str, size_type pos = npos) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type pos, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str, pos));
+    assert(s.rfind(str, pos) == x);
+    if (x != S::npos)
+        assert(x <= pos && x + str.size() <= s.size());
+}
+
+template <class S>
+void
+test(const S& s, const S& str, typename S::size_type x)
+{
+    LIBCPP_ASSERT_NOEXCEPT(s.rfind(str));
+    assert(s.rfind(str) == x);
+    if (x != S::npos)
+        assert(0 <= x && x + str.size() <= s.size());
+}
+
+template <class S>
+void test0()
+{
+    test(S(""), S(""), 0, 0);
+    test(S(""), S("abcde"), 0, S::npos);
+    test(S(""), S("abcdeabcde"), 0, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S(""), S(""), 1, 0);
+    test(S(""), S("abcde"), 1, S::npos);
+    test(S(""), S("abcdeabcde"), 1, S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 0, 0);
+    test(S("abcde"), S("abcde"), 0, 0);
+    test(S("abcde"), S("abcdeabcde"), 0, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcde"), S(""), 1, 1);
+    test(S("abcde"), S("abcde"), 1, 0);
+    test(S("abcde"), S("abcdeabcde"), 1, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcde"), S(""), 2, 2);
+    test(S("abcde"), S("abcde"), 2, 0);
+    test(S("abcde"), S("abcdeabcde"), 2, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 2, S::npos);
+    test(S("abcde"), S(""), 4, 4);
+    test(S("abcde"), S("abcde"), 4, 0);
+    test(S("abcde"), S("abcdeabcde"), 4, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 4, S::npos);
+    test(S("abcde"), S(""), 5, 5);
+    test(S("abcde"), S("abcde"), 5, 0);
+    test(S("abcde"), S("abcdeabcde"), 5, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcde"), S(""), 6, 5);
+    test(S("abcde"), S("abcde"), 6, 0);
+    test(S("abcde"), S("abcdeabcde"), 6, S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), 6, S::npos);
+    test(S("abcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, S::npos);
+    test(S("abcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcde"), S("abcde"), 1, 0);
+    test(S("abcdeabcde"), S("abcdeabcde"), 1, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, S::npos);
+    test(S("abcdeabcde"), S(""), 5, 5);
+    test(S("abcdeabcde"), S("abcde"), 5, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 5, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 5, S::npos);
+    test(S("abcdeabcde"), S(""), 9, 9);
+    test(S("abcdeabcde"), S("abcde"), 9, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 9, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 9, S::npos);
+    test(S("abcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcde"), S("abcde"), 10, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 10, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, S::npos);
+    test(S("abcdeabcde"), S(""), 11, 10);
+    test(S("abcdeabcde"), S("abcde"), 11, 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 11, 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), 11, S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 1, 1);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 1, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 10, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 19, 19);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 19, 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 19, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 19, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 20, 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 20, 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 20, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 20, 0);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 21, 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 21, 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 21, 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 21, 0);
+}
+
+template <class S>
+void test1()
+{
+    test(S(""), S(""), 0);
+    test(S(""), S("abcde"), S::npos);
+    test(S(""), S("abcdeabcde"), S::npos);
+    test(S(""), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcde"), S(""), 5);
+    test(S("abcde"), S("abcde"), 0);
+    test(S("abcde"), S("abcdeabcde"), S::npos);
+    test(S("abcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcde"), S(""), 10);
+    test(S("abcdeabcde"), S("abcde"), 5);
+    test(S("abcdeabcde"), S("abcdeabcde"), 0);
+    test(S("abcdeabcde"), S("abcdeabcdeabcdeabcde"), S::npos);
+    test(S("abcdeabcdeabcdeabcde"), S(""), 20);
+    test(S("abcdeabcdeabcdeabcde"), S("abcde"), 15);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcde"), 10);
+    test(S("abcdeabcdeabcdeabcde"), S("abcdeabcdeabcdeabcde"), 0);
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view S;
+    test0<S>();
+    test1<S>();
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+
+    static_assert (sv1.rfind(sv1) == 0, "" );
+    static_assert (sv1.rfind(sv2) == SV::npos, "" );
+    static_assert (sv2.rfind(sv1) == 5, "" );
+    static_assert (sv2.rfind(sv2) == 0, "" );
+    static_assert (sv2.rfind(sv2, 1) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/char_type.hash.fail.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/char_type.hash.fail.cpp
new file mode 100644
index 0000000..a1d6c10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/char_type.hash.fail.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: !stdlib=libc++ && (c++11 || c++14)
+
+// <string_view>
+
+// Test that hash specializations for <string_view> require "char_traits<_CharT>" not just any "_Trait".
+
+#include <string_view>
+#include <string> // for 'mbstate_t'
+
+#include "test_macros.h"
+
+template <class _CharT>
+struct trait // copied from <__string>
+{
+    typedef _CharT         char_type;
+    typedef int            int_type;
+    typedef std::streamoff off_type;
+    typedef std::streampos pos_type;
+    typedef std::mbstate_t state_type;
+
+    static inline void assign(char_type& __c1, const char_type& __c2) {
+        __c1 = __c2;
+    }
+    static inline bool eq(char_type __c1, char_type __c2) { return __c1 == __c2; }
+    static inline bool lt(char_type __c1, char_type __c2) { return __c1 < __c2; }
+
+    static int compare(const char_type* __s1, const char_type* __s2, size_t __n);
+    static size_t length(const char_type* __s);
+    static const char_type* find(const char_type* __s, size_t __n,
+                                 const char_type& __a);
+
+    static char_type* move(char_type* __s1, const char_type* __s2, size_t __n);
+    static char_type* copy(char_type* __s1, const char_type* __s2, size_t __n);
+    static char_type* assign(char_type* __s, size_t __n, char_type __a);
+
+    static inline int_type not_eof(int_type __c) {
+        return eq_int_type(__c, eof()) ? ~eof() : __c;
+    }
+    static inline char_type to_char_type(int_type __c) { return char_type(__c); }
+    static inline int_type to_int_type(char_type __c) { return int_type(__c); }
+    static inline bool eq_int_type(int_type __c1, int_type __c2) {
+        return __c1 == __c2;
+    }
+    static inline int_type eof() { return int_type(EOF); }
+};
+
+template <class CharT>
+void test() {
+    typedef std::basic_string_view<CharT, trait<CharT> > strv_t;
+    std::hash<strv_t>
+        h; // expected-error-re 4 {{{{call to implicitly-deleted default constructor of 'std::hash<strv_t>'|implicit instantiation of undefined template}} {{.+}}}}}}
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    // expected-error-re@-2 {{{{call to implicitly-deleted default constructor of 'std::hash<strv_t>'|implicit instantiation of undefined template}} {{.+}}}}}}
+#endif
+    (void)h;
+}
+
+int main(int, char**) {
+    test<char>();
+    test<wchar_t>();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    test<char8_t>();
+#endif
+    test<char16_t>();
+    test<char32_t>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/enabled_hashes.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/enabled_hashes.pass.cpp
new file mode 100644
index 0000000..407823b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/enabled_hashes.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: !stdlib=libc++ && (c++11 || c++14)
+
+// <string_view>
+
+// Test that <string_view> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <string_view>
+
+#include "constexpr_char_traits.h"
+#include "poisoned_hash_helper.h"
+#include "test_macros.h"
+
+struct MyChar {
+  char c;
+};
+
+template <>
+struct std::char_traits<MyChar> {
+  using char_type  = MyChar;
+  using int_type   = std::char_traits<char>::int_type;
+  using off_type   = std::char_traits<char>::off_type;
+  using pos_type   = std::char_traits<char>::pos_type;
+  using state_type = std::char_traits<char>::state_type;
+
+  static void assign(char_type&, const char_type&);
+  static bool eq(char_type, char_type);
+  static bool lt(char_type, char_type);
+
+  static int              compare(const char_type*, const char_type*, size_t);
+  static size_t           length(const char_type*);
+  static const char_type* find(const char_type*, size_t, const char_type&);
+  static char_type*       move(char_type*, const char_type*, size_t);
+  static char_type*       copy(char_type*, const char_type*, size_t);
+  static char_type*       assign(char_type*, size_t, char_type);
+
+  static int_type  not_eof(int_type);
+  static char_type to_char_type(int_type);
+  static int_type  to_int_type(char_type);
+  static bool      eq_int_type(int_type, int_type);
+  static int_type  eof();
+};
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  {
+    test_hash_enabled_for_type<std::string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_hash_enabled_for_type<std::wstring_view>();
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+    test_hash_enabled_for_type<std::u8string_view>();
+#endif
+    test_hash_enabled_for_type<std::u16string_view>();
+    test_hash_enabled_for_type<std::u32string_view>();
+    test_hash_disabled_for_type<std::basic_string_view<MyChar, std::char_traits<MyChar>>>();
+    test_hash_disabled_for_type<std::basic_string_view<char, constexpr_char_traits<char>>>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/string_view.pass.cpp
new file mode 100644
index 0000000..44b72ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.hash/string_view.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <functional>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+// Not very portable
+
+#include <string_view>
+#include <string>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using std::string_view;
+
+template <class SV>
+void
+test()
+{
+    typedef std::hash<SV> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<typename H::argument_type, SV>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+
+    typedef typename SV::value_type char_type;
+    typedef std::basic_string<char_type> String;
+    typedef std::hash<String> SH;
+    ASSERT_NOEXCEPT(H()(SV()));
+
+    char_type g1 [ 10 ];
+    char_type g2 [ 10 ];
+    for ( int i = 0; i < 10; ++i )
+        g1[i] = g2[9-i] = static_cast<char_type>('0' + i);
+    H h;
+    SH sh;
+    SV s1(g1, 10);
+    String ss1(s1);
+    SV s2(g2, 10);
+    String ss2(s2);
+    assert(h(s1) == h(s1));
+    assert(h(s1) != h(s2));
+    assert(sh(ss1) == h(s1));
+    assert(sh(ss2) == h(s2));
+}
+
+int main(int, char**)
+{
+    test<std::string_view>();
+#ifndef TEST_HAS_NO_CHAR8_T
+    test<std::u8string_view>();
+#endif
+    test<std::u16string_view>();
+    test<std::u32string_view>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::wstring_view>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.io/stream_insert.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.io/stream_insert.pass.cpp
new file mode 100644
index 0000000..083b84a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.io/stream_insert.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits, class Allocator>
+//   basic_ostream<charT, traits>&
+//   operator<<(basic_ostream<charT, traits>& os,
+//              const basic_string_view<charT,traits> str);
+
+#include <string_view>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::ostringstream out;
+        std::string_view sv("some text");
+        out << sv;
+        assert(out.good());
+        assert(sv == out.str());
+    }
+    {
+        std::ostringstream out;
+        std::string s("some text");
+        std::string_view sv(s);
+        out.width(12);
+        out << sv;
+        assert(out.good());
+        assert("   " + s == out.str());
+    }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+        std::wostringstream out;
+        std::wstring_view sv(L"some text");
+        out << sv;
+        assert(out.good());
+        assert(sv == out.str());
+    }
+    {
+        std::wostringstream out;
+        std::wstring s(L"some text");
+        std::wstring_view sv(s);
+        out.width(12);
+        out << sv;
+        assert(out.good());
+        assert(L"   " + s == out.str());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.io/stream_insert_decl_present.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.io/stream_insert_decl_present.compile.pass.cpp
new file mode 100644
index 0000000..42a83f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.io/stream_insert_decl_present.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// template<class charT, class traits, class Allocator>
+//   basic_ostream<charT, traits>&
+//   operator<<(basic_ostream<charT, traits>& os,
+//              const basic_string_view<charT,traits> str);
+
+#include <string_view>
+#include <iosfwd>
+
+template <class SV, class = void>
+struct HasDecl : std::false_type {};
+template <class SV>
+struct HasDecl<SV, decltype(static_cast<void>(std::declval<std::ostream&>() << std::declval<SV&>()))> : std::true_type {};
+
+static_assert(HasDecl<std::string_view>::value, "streaming operator declaration not present");
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/begin.pass.cpp
new file mode 100644
index 0000000..73007fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/begin.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const_iterator begin() const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(S s)
+{
+    const S& cs = s;
+    typename S::iterator b = s.begin();
+    typename S::const_iterator cb1 = cs.begin();
+    typename S::const_iterator cb2 = s.cbegin();
+    if (!s.empty())
+    {
+        assert(   *b ==  s[0]);
+        assert(  &*b == &s[0]);
+        assert( *cb1 ==  s[0]);
+        assert(&*cb1 == &s[0]);
+        assert( *cb2 ==  s[0]);
+        assert(&*cb2 == &s[0]);
+
+    }
+    assert(  b == cb1);
+    assert(  b == cb2);
+    assert(cb1 == cb2);
+}
+
+
+int main(int, char**)
+{
+    typedef std::string_view    string_view;
+#ifndef TEST_HAS_NO_CHAR8_T
+    typedef std::u8string_view  u8string_view;
+#endif
+    typedef std::u16string_view u16string_view;
+    typedef std::u32string_view u32string_view;
+
+    test(string_view   ());
+    test(u16string_view());
+    test(u32string_view());
+    test(string_view   ( "123"));
+#ifndef TEST_HAS_NO_CHAR8_T
+    test(u8string_view{u8"123"});
+#endif
+#if TEST_STD_VER >= 11
+    test(u16string_view{u"123"});
+    test(u32string_view{U"123"});
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    typedef std::wstring_view   wstring_view;
+    test(wstring_view  ());
+    test(wstring_view  (L"123"));
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    constexpr string_view       sv { "123", 3 };
+#  ifndef TEST_HAS_NO_CHAR8_T
+    constexpr u8string_view u8sv  {u8"123", 3 };
+#endif
+    constexpr u16string_view u16sv {u"123", 3 };
+    constexpr u32string_view u32sv {U"123", 3 };
+
+    static_assert (    *sv.begin() ==    sv[0], "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  *u8sv.begin() ==  u8sv[0], "" );
+#endif
+    static_assert ( *u16sv.begin() == u16sv[0], "" );
+    static_assert ( *u32sv.begin() == u32sv[0], "" );
+
+    static_assert (    *sv.cbegin() ==    sv[0], "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  *u8sv.cbegin() ==  u8sv[0], "" );
+#endif
+    static_assert ( *u16sv.cbegin() == u16sv[0], "" );
+    static_assert ( *u32sv.cbegin() == u32sv[0], "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            constexpr wstring_view     wsv {L"123", 3 };
+            static_assert (   *wsv.begin() ==   wsv[0], "" );
+            static_assert (   *wsv.cbegin() ==   wsv[0], "" );
+        }
+#endif
+    }
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/end.pass.cpp
new file mode 100644
index 0000000..70e30e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/end.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const_iterator end() const;
+
+#include <string_view>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(S s)
+{
+    const S& cs = s;
+    typename S::iterator e = s.end();
+    typename S::const_iterator ce1 = cs.end();
+    typename S::const_iterator ce2 = s.cend();
+
+    if (s.empty())
+    {
+        assert(  e ==  s.begin());
+        assert(ce1 == cs.begin());
+        assert(ce2 ==  s.begin());
+    }
+    else
+    {
+        assert(  e !=  s.begin());
+        assert(ce1 != cs.begin());
+        assert(ce2 !=  s.begin());
+    }
+
+    assert(static_cast<std::size_t>(  e -  s.begin()) == s.size());
+    assert(static_cast<std::size_t>(ce1 - cs.begin()) == cs.size());
+    assert(static_cast<std::size_t>(ce2 - s.cbegin()) == s.size());
+
+    assert(  e == ce1);
+    assert(  e == ce2);
+    assert(ce1 == ce2);
+}
+
+
+int main(int, char**)
+{
+    typedef std::string_view    string_view;
+#ifndef TEST_HAS_NO_CHAR8_T
+    typedef std::u8string_view  u8string_view;
+#endif
+    typedef std::u16string_view u16string_view;
+    typedef std::u32string_view u32string_view;
+
+    test(string_view   ());
+    test(u16string_view());
+    test(u32string_view());
+    test(string_view   ( "123"));
+#ifndef TEST_HAS_NO_CHAR8_T
+    test(u8string_view{u8"123"});
+#endif
+#if TEST_STD_VER >= 11
+    test(u16string_view{u"123"});
+    test(u32string_view{U"123"});
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    typedef std::wstring_view   wstring_view;
+    test(wstring_view  ());
+    test(wstring_view  (L"123"));
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    constexpr string_view       sv { "123", 3 };
+#  ifndef TEST_HAS_NO_CHAR8_T
+    constexpr u8string_view u8sv  {u8"123", 3 };
+#endif
+    constexpr u16string_view u16sv {u"123", 3 };
+    constexpr u32string_view u32sv {U"123", 3 };
+
+    static_assert (    sv.begin() !=    sv.end(), "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  u8sv.begin() !=  u8sv.end(), "" );
+#endif
+    static_assert ( u16sv.begin() != u16sv.end(), "" );
+    static_assert ( u32sv.begin() != u32sv.end(), "" );
+
+    static_assert (    sv.begin() !=    sv.cend(), "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  u8sv.begin() !=  u8sv.cend(), "" );
+#endif
+    static_assert ( u16sv.begin() != u16sv.cend(), "" );
+    static_assert ( u32sv.begin() != u32sv.cend(), "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            constexpr wstring_view     wsv {L"123", 3 };
+            static_assert (   wsv.begin() !=   wsv.end(), "" );
+            static_assert (   wsv.begin() !=   wsv.cend(), "" );
+        }
+#endif
+    }
+#endif // TEST_STD_VER > 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..97a1c7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// iterator, const_iterator, reverse_iterator, const_reverse_iterator
+
+#include <string_view>
+
+#include <iterator>
+
+#include "test_macros.h"
+
+using iterator = std::string_view::iterator;
+using const_iterator = std::string_view::const_iterator;
+using reverse_iterator = std::string_view::reverse_iterator;
+using const_reverse_iterator = std::string_view::const_reverse_iterator;
+
+static_assert(std::contiguous_iterator<iterator>);
+LIBCPP_STATIC_ASSERT(std::__is_cpp17_random_access_iterator<iterator>::value);
+static_assert(!std::indirectly_writable<iterator, char>);
+static_assert(std::sentinel_for<iterator, iterator>);
+static_assert(std::sentinel_for<iterator, const_iterator>);
+static_assert(!std::sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<iterator, iterator>);
+static_assert(std::sized_sentinel_for<iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<iterator, const_reverse_iterator>);
+static_assert(std::indirectly_movable<iterator, char*>);
+static_assert(std::indirectly_movable_storable<iterator, char*>);
+static_assert(std::indirectly_copyable<iterator, char*>);
+static_assert(std::indirectly_copyable_storable<iterator, char*>);
+static_assert(!std::indirectly_swappable<iterator, iterator>);
+
+static_assert(std::contiguous_iterator<const_iterator>);
+LIBCPP_STATIC_ASSERT(std::__is_cpp17_random_access_iterator<const_iterator>::value);
+static_assert(!std::indirectly_writable<const_iterator, char>);
+static_assert(std::sentinel_for<const_iterator, iterator>);
+static_assert(std::sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, iterator>);
+static_assert(std::sized_sentinel_for<const_iterator, const_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, reverse_iterator>);
+static_assert(!std::sized_sentinel_for<const_iterator, const_reverse_iterator>);
+static_assert(!std::indirectly_swappable<const_iterator, const_iterator>);
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/rbegin.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/rbegin.pass.cpp
new file mode 100644
index 0000000..9b96c05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/rbegin.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// const_iterator rbegin() const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(S s)
+{
+    const S& cs = s;
+    typename S::reverse_iterator b = s.rbegin();
+    typename S::const_reverse_iterator cb1 = cs.rbegin();
+    typename S::const_reverse_iterator cb2 = s.crbegin();
+    if (!s.empty())
+    {
+        const size_t last = s.size() - 1;
+        assert(   *b ==  s[last]);
+        assert(  &*b == &s[last]);
+        assert( *cb1 ==  s[last]);
+        assert(&*cb1 == &s[last]);
+        assert( *cb2 ==  s[last]);
+        assert(&*cb2 == &s[last]);
+
+    }
+    assert(  b == cb1);
+    assert(  b == cb2);
+    assert(cb1 == cb2);
+}
+
+
+int main(int, char**)
+{
+    typedef std::string_view    string_view;
+#ifndef TEST_HAS_NO_CHAR8_T
+    typedef std::u8string_view  u8string_view;
+#endif
+    typedef std::u16string_view u16string_view;
+    typedef std::u32string_view u32string_view;
+
+    test(string_view   ());
+    test(u16string_view());
+    test(u32string_view());
+    test(string_view   ( "123"));
+#ifndef TEST_HAS_NO_CHAR8_T
+    test(u8string_view{u8"123"});
+#endif
+#if TEST_STD_VER >= 11
+    test(u16string_view{u"123"});
+    test(u32string_view{U"123"});
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    typedef std::wstring_view   wstring_view;
+    test(wstring_view  ());
+    test(wstring_view  (L"123"));
+#endif
+
+#if TEST_STD_VER > 14
+    {
+    constexpr string_view       sv { "123", 3 };
+#  ifndef TEST_HAS_NO_CHAR8_T
+    constexpr u8string_view u8sv  {u8"123", 3 };
+#endif
+    constexpr u16string_view u16sv {u"123", 3 };
+    constexpr u32string_view u32sv {U"123", 3 };
+
+    static_assert (    *sv.rbegin() ==    sv[2], "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  *u8sv.rbegin() ==  u8sv[2], "" );
+#endif
+    static_assert ( *u16sv.rbegin() == u16sv[2], "" );
+    static_assert ( *u32sv.rbegin() == u32sv[2], "" );
+
+    static_assert (    *sv.crbegin() ==    sv[2], "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  *u8sv.crbegin() == u8sv[2], "" );
+#endif
+    static_assert ( *u16sv.crbegin() == u16sv[2], "" );
+    static_assert ( *u32sv.crbegin() == u32sv[2], "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            constexpr wstring_view     wsv {L"123", 3 };
+            static_assert (   *wsv.rbegin() ==   wsv[2], "" );
+            static_assert (   *wsv.crbegin() ==   wsv[2], "" );
+        }
+#endif
+    }
+#endif // TEST_STD_VER > 14
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/rend.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/rend.pass.cpp
new file mode 100644
index 0000000..481d623
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.iterators/rend.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr const_iterator rend() const;
+
+#include <string_view>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <class S>
+void
+test(S s)
+{
+    const S& cs = s;
+    typename S::reverse_iterator e = s.rend();
+    typename S::const_reverse_iterator ce1 = cs.rend();
+    typename S::const_reverse_iterator ce2 = s.crend();
+
+    if (s.empty())
+    {
+        assert(  e ==  s.rbegin());
+        assert(ce1 == cs.rbegin());
+        assert(ce2 ==  s.rbegin());
+    }
+    else
+    {
+        assert(  e !=  s.rbegin());
+        assert(ce1 != cs.rbegin());
+        assert(ce2 !=  s.rbegin());
+    }
+
+    assert(static_cast<std::size_t>(  e -  s.rbegin()) == s.size());
+    assert(static_cast<std::size_t>(ce1 - cs.rbegin()) == cs.size());
+    assert(static_cast<std::size_t>(ce2 - s.crbegin()) == s.size());
+
+    assert(  e == ce1);
+    assert(  e == ce2);
+    assert(ce1 == ce2);
+}
+
+
+int main(int, char**)
+{
+    typedef std::string_view    string_view;
+#ifndef TEST_HAS_NO_CHAR8_T
+    typedef std::u8string_view u8string_view;
+#endif
+    typedef std::u16string_view u16string_view;
+    typedef std::u32string_view u32string_view;
+
+    test(string_view   ());
+    test(u16string_view());
+    test(u32string_view());
+    test(string_view   ( "123"));
+#ifndef TEST_HAS_NO_CHAR8_T
+    test(u8string_view{u8"123"});
+#endif
+#if TEST_STD_VER >= 11
+    test(u16string_view{u"123"});
+    test(u32string_view{U"123"});
+#endif
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    typedef std::wstring_view   wstring_view;
+    test(wstring_view  ());
+    test(wstring_view  (L"123"));
+#endif
+
+#if TEST_STD_VER > 14
+    {
+    constexpr string_view       sv { "123", 3 };
+#  ifndef TEST_HAS_NO_CHAR8_T
+    constexpr u8string_view u8sv {u8"123", 3 };
+#endif
+    constexpr u16string_view u16sv {u"123", 3 };
+    constexpr u32string_view u32sv {U"123", 3 };
+
+    static_assert (    *--sv.rend() ==    sv[0], "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  *--u8sv.rend() ==  u8sv[0], "" );
+#endif
+    static_assert ( *--u16sv.rend() == u16sv[0], "" );
+    static_assert ( *--u32sv.rend() == u32sv[0], "" );
+
+    static_assert (    *--sv.crend() ==    sv[0], "" );
+#  ifndef TEST_HAS_NO_CHAR8_T
+    static_assert (  *--u8sv.crend() ==  u8sv[0], "" );
+#endif
+    static_assert ( *--u16sv.crend() == u16sv[0], "" );
+    static_assert ( *--u32sv.crend() == u32sv[0], "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            constexpr wstring_view     wsv {L"123", 3 };
+            static_assert (   *--wsv.rend() ==   wsv[0], "" );
+            static_assert (   *--wsv.crend() ==   wsv[0], "" );
+        }
+#endif
+    }
+#endif // TEST_STD_VER > 14
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/remove_prefix.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/remove_prefix.pass.cpp
new file mode 100644
index 0000000..bda42f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/remove_prefix.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// void remove_prefix(size_type _n)
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename CharT>
+void test ( const CharT *s, size_t len ) {
+    typedef std::basic_string_view<CharT> SV;
+    {
+    SV sv1 ( s );
+    assert ( sv1.size() == len );
+    assert ( sv1.data() == s );
+
+    if ( len > 0 ) {
+        sv1.remove_prefix ( 1 );
+        assert ( sv1.size() == (len - 1));
+        assert ( sv1.data() == (s + 1));
+        sv1.remove_prefix ( len - 1 );
+    }
+
+    assert ( sv1.size() == 0 );
+    sv1.remove_prefix ( 0 );
+    assert ( sv1.size() == 0 );
+    }
+}
+
+#if TEST_STD_VER > 11
+constexpr size_t test_ce ( size_t n, size_t k ) {
+    typedef std::basic_string_view<char> SV;
+    SV sv1{ "ABCDEFGHIJKL", n };
+    sv1.remove_prefix ( k );
+    return sv1.size();
+}
+#endif
+
+int main(int, char**) {
+    test ( "ABCDE", 5 );
+    test ( "a", 1 );
+    test ( "", 0 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDE", 5 );
+    test ( L"a", 1 );
+    test ( L"", 0 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDE", 5 );
+    test ( u"a", 1 );
+    test ( u"", 0 );
+
+    test ( U"ABCDE", 5 );
+    test ( U"a", 1 );
+    test ( U"", 0 );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    static_assert ( test_ce ( 5, 0 ) == 5, "" );
+    static_assert ( test_ce ( 5, 1 ) == 4, "" );
+    static_assert ( test_ce ( 5, 5 ) == 0, "" );
+    static_assert ( test_ce ( 9, 3 ) == 6, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/remove_suffix.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/remove_suffix.pass.cpp
new file mode 100644
index 0000000..95a2331
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/remove_suffix.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// void remove_suffix(size_type _n)
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename CharT>
+void test ( const CharT *s, size_t len ) {
+    typedef std::basic_string_view<CharT> SV;
+    {
+    SV sv1 ( s );
+    assert ( sv1.size() == len );
+    assert ( sv1.data() == s );
+
+    if ( len > 0 ) {
+        sv1.remove_suffix ( 1 );
+        assert ( sv1.size() == (len - 1));
+        assert ( sv1.data() == s);
+        sv1.remove_suffix ( len - 1 );
+        }
+
+    assert ( sv1.size() == 0 );
+    sv1.remove_suffix ( 0 );
+    assert ( sv1.size() == 0 );
+    }
+
+}
+
+#if TEST_STD_VER > 11
+constexpr size_t test_ce ( size_t n, size_t k ) {
+    typedef std::basic_string_view<char> SV;
+    SV sv1{ "ABCDEFGHIJKL", n };
+    sv1.remove_suffix ( k );
+    return sv1.size();
+}
+#endif
+
+int main(int, char**) {
+    test ( "ABCDE", 5 );
+    test ( "a", 1 );
+    test ( "", 0 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDE", 5 );
+    test ( L"a", 1 );
+    test ( L"", 0 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDE", 5 );
+    test ( u"a", 1 );
+    test ( u"", 0 );
+
+    test ( U"ABCDE", 5 );
+    test ( U"a", 1 );
+    test ( U"", 0 );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    static_assert ( test_ce ( 5, 0 ) == 5, "" );
+    static_assert ( test_ce ( 5, 1 ) == 4, "" );
+    static_assert ( test_ce ( 5, 5 ) == 0, "" );
+    static_assert ( test_ce ( 9, 3 ) == 6, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/swap.pass.cpp
new file mode 100644
index 0000000..db22998
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.modifiers/swap.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// void swap(basic_string_view& _other) noexcept
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename CharT>
+void test ( const CharT *s, size_t len ) {
+    typedef std::basic_string_view<CharT> SV;
+    {
+    SV sv1(s);
+    SV sv2;
+
+    assert ( sv1.size() == len );
+    assert ( sv1.data() == s );
+    assert ( sv2.size() == 0 );
+
+    sv1.swap ( sv2 );
+    assert ( sv1.size() == 0 );
+    assert ( sv2.size() == len );
+    assert ( sv2.data() == s );
+    }
+
+}
+
+#if TEST_STD_VER > 11
+constexpr size_t test_ce ( size_t n, size_t k ) {
+    typedef std::basic_string_view<char> SV;
+    SV sv1{ "ABCDEFGHIJKL", n };
+    SV sv2 { sv1.data(), k };
+    sv1.swap ( sv2 );
+    return sv1.size();
+}
+#endif
+
+
+int main(int, char**) {
+    test ( "ABCDE", 5 );
+    test ( "a", 1 );
+    test ( "", 0 );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDE", 5 );
+    test ( L"a", 1 );
+    test ( L"", 0 );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDE", 5 );
+    test ( u"a", 1 );
+    test ( u"", 0 );
+
+    test ( U"ABCDE", 5 );
+    test ( U"a", 1 );
+    test ( U"", 0 );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    static_assert ( test_ce (2, 3) == 3, "" );
+    static_assert ( test_ce (5, 3) == 3, "" );
+    static_assert ( test_ce (0, 1) == 1, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.nonmem/quoted.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.nonmem/quoted.pass.cpp
new file mode 100644
index 0000000..3d47f62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.nonmem/quoted.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: !stdlib=libc++ && c++14
+
+// <iomanip>
+
+// quoted
+
+#include <iomanip>
+#include <sstream>
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool is_skipws ( const std::istream *is ) {
+    return ( is->flags() & std::ios_base::skipws ) != 0;
+}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+bool is_skipws ( const std::wistream *is ) {
+    return ( is->flags() & std::ios_base::skipws ) != 0;
+}
+#endif
+
+void round_trip ( const char *p ) {
+    std::stringstream ss;
+    bool skippingws = is_skipws ( &ss );
+    std::string_view sv {p};
+
+    ss << std::quoted(sv);
+    std::string s;
+    ss >> std::quoted(s);
+    assert ( s == sv );
+    assert ( skippingws == is_skipws ( &ss ));
+    }
+
+void round_trip_ws ( const char *p ) {
+    std::stringstream ss;
+    std::noskipws ( ss );
+    bool skippingws = is_skipws ( &ss );
+    std::string_view sv {p};
+
+    ss << std::quoted(sv);
+    std::string s;
+    ss >> std::quoted(s);
+    assert ( s == sv );
+    assert ( skippingws == is_skipws ( &ss ));
+    }
+
+void round_trip_d ( const char *p, char delim ) {
+    std::stringstream ss;
+    std::string_view sv {p};
+
+    ss << std::quoted(sv, delim);
+    std::string s;
+    ss >> std::quoted(s, delim);
+    assert ( s == sv );
+    }
+
+void round_trip_e ( const char *p, char escape ) {
+    std::stringstream ss;
+    std::string_view sv {p};
+
+    ss << std::quoted(sv, '"', escape );
+    std::string s;
+    ss >> std::quoted(s, '"', escape );
+    assert ( s == sv );
+    }
+
+
+
+std::string quote ( const char *p, char delim='"', char escape='\\' ) {
+    std::stringstream ss;
+    ss << std::quoted(p, delim, escape);
+    std::string s;
+    ss >> s;    // no quote
+    return s;
+}
+
+std::string unquote ( const char *p, char delim='"', char escape='\\' ) {
+    std::stringstream ss;
+    ss << p;
+    std::string s;
+    ss >> std::quoted(s, delim, escape);
+    return s;
+}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+void round_trip ( const wchar_t *p ) {
+    std::wstringstream ss;
+    bool skippingws = is_skipws ( &ss );
+    std::wstring_view sv {p};
+
+    ss << std::quoted(sv);
+    std::wstring s;
+    ss >> std::quoted(s);
+    assert ( s == sv );
+    assert ( skippingws == is_skipws ( &ss ));
+    }
+
+
+void round_trip_ws ( const wchar_t *p ) {
+    std::wstringstream ss;
+    std::noskipws ( ss );
+    bool skippingws = is_skipws ( &ss );
+    std::wstring_view sv {p};
+
+    ss << std::quoted(sv);
+    std::wstring s;
+    ss >> std::quoted(s);
+    assert ( s == sv );
+    assert ( skippingws == is_skipws ( &ss ));
+    }
+
+void round_trip_d ( const wchar_t *p, wchar_t delim ) {
+    std::wstringstream ss;
+    std::wstring_view sv {p};
+
+    ss << std::quoted(sv, delim);
+    std::wstring s;
+    ss >> std::quoted(s, delim);
+    assert ( s == sv );
+    }
+
+void round_trip_e ( const wchar_t *p, wchar_t escape ) {
+    std::wstringstream ss;
+    std::wstring_view sv {p};
+
+    ss << std::quoted(sv, wchar_t('"'), escape );
+    std::wstring s;
+    ss >> std::quoted(s, wchar_t('"'), escape );
+    assert ( s == sv );
+    }
+
+
+std::wstring quote ( const wchar_t *p, wchar_t delim='"', wchar_t escape='\\' ) {
+    std::wstringstream ss;
+    std::wstring_view sv {p};
+
+    ss << std::quoted(sv, delim, escape);
+    std::wstring s;
+    ss >> s;    // no quote
+    return s;
+}
+
+std::wstring unquote ( const wchar_t *p, wchar_t delim='"', wchar_t escape='\\' ) {
+    std::wstringstream ss;
+    std::wstring_view sv {p};
+
+    ss << sv;
+    std::wstring s;
+    ss >> std::quoted(s, delim, escape);
+    return s;
+}
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**)
+{
+    round_trip    (  "" );
+    round_trip_ws (  "" );
+    round_trip_d  (  "", 'q' );
+    round_trip_e  (  "", 'q' );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    round_trip    ( L"" );
+    round_trip_ws ( L"" );
+    round_trip_d  ( L"", 'q' );
+    round_trip_e  ( L"", 'q' );
+#endif
+
+    round_trip    (  "Hi" );
+    round_trip_ws (  "Hi" );
+    round_trip_d  (  "Hi", '!' );
+    round_trip_e  (  "Hi", '!' );
+    assert ( quote ( "Hi", '!' ) == "!Hi!" );
+    assert ( quote ( "Hi!", '!' ) == R"(!Hi\!!)" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    round_trip    ( L"Hi" );
+    round_trip_ws ( L"Hi" );
+    round_trip_d  ( L"Hi", '!' );
+    round_trip_e  ( L"Hi", '!' );
+    assert ( quote ( L"Hi", '!' )  == L"!Hi!" );
+    assert ( quote ( L"Hi!", '!' ) == LR"(!Hi\!!)" );
+#endif
+
+    round_trip    (  "Hi Mom" );
+    round_trip_ws (  "Hi Mom" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    round_trip    ( L"Hi Mom" );
+    round_trip_ws ( L"Hi Mom" );
+#endif
+
+    assert ( quote (  "" )  ==  "\"\"" );
+    assert ( quote (  "a" ) ==  "\"a\"" );
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( quote ( L"" )  == L"\"\"" );
+    assert ( quote ( L"a" ) == L"\"a\"" );
+#endif
+
+    // missing end quote - must not hang
+    assert ( unquote (  "\"abc" ) ==  "abc" );
+    assert ( unquote (  "abc" ) == "abc" ); // no delimiter
+    assert ( unquote (  "abc def" ) ==  "abc" ); // no delimiter
+    assert ( unquote (  "" ) ==  "" ); // nothing there
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    assert ( unquote ( L"\"abc" ) == L"abc" );
+    assert ( unquote ( L"abc" ) == L"abc" ); // no delimiter
+    assert ( unquote ( L"abc def" ) == L"abc" ); // no delimiter
+    assert ( unquote ( L"" ) == L"" ); // nothing there
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.pointer.pass.cpp
new file mode 100644
index 0000000..ed06bec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.pointer.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr int compare(const charT* s) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1, const CharT *s, int expected ) {
+    assert ( sign( sv1.compare(s)) == sign(expected));
+}
+
+template<typename CharT>
+void
+test( const CharT *s1, const CharT *s2, int expected)
+{
+    typedef std::basic_string_view<CharT> string_view_t;
+    string_view_t sv1 ( s1 );
+    test1 ( sv1, s2, expected );
+}
+
+int main(int, char**)
+{
+    {
+    test("", "", 0);
+    test("", "abcde", -5);
+    test("", "abcdefghij", -10);
+    test("", "abcdefghijklmnopqrst", -20);
+    test("abcde", "", 5);
+    test("abcde", "abcde", 0);
+    test("abcde", "abcdefghij", -5);
+    test("abcde", "abcdefghijklmnopqrst", -15);
+    test("abcdefghij", "", 10);
+    test("abcdefghij", "abcde", 5);
+    test("abcdefghij", "abcdefghij", 0);
+    test("abcdefghij", "abcdefghijklmnopqrst", -10);
+    test("abcdefghijklmnopqrst", "", 20);
+    test("abcdefghijklmnopqrst", "abcde", 15);
+    test("abcdefghijklmnopqrst", "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", "abcdefghijklmnopqrst", 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    test(L"", L"", 0);
+    test(L"", L"abcde", -5);
+    test(L"", L"abcdefghij", -10);
+    test(L"", L"abcdefghijklmnopqrst", -20);
+    test(L"abcde", L"", 5);
+    test(L"abcde", L"abcde", 0);
+    test(L"abcde", L"abcdefghij", -5);
+    test(L"abcde", L"abcdefghijklmnopqrst", -15);
+    test(L"abcdefghij", L"", 10);
+    test(L"abcdefghij", L"abcde", 5);
+    test(L"abcdefghij", L"abcdefghij", 0);
+    test(L"abcdefghij", L"abcdefghijklmnopqrst", -10);
+    test(L"abcdefghijklmnopqrst", L"", 20);
+    test(L"abcdefghijklmnopqrst", L"abcde", 15);
+    test(L"abcdefghijklmnopqrst", L"abcdefghij", 10);
+    test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0);
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    test(U"", U"", 0);
+    test(U"", U"abcde", -5);
+    test(U"", U"abcdefghij", -10);
+    test(U"", U"abcdefghijklmnopqrst", -20);
+    test(U"abcde", U"", 5);
+    test(U"abcde", U"abcde", 0);
+    test(U"abcde", U"abcdefghij", -5);
+    test(U"abcde", U"abcdefghijklmnopqrst", -15);
+    test(U"abcdefghij", U"", 10);
+    test(U"abcdefghij", U"abcde", 5);
+    test(U"abcdefghij", U"abcdefghij", 0);
+    test(U"abcdefghij", U"abcdefghijklmnopqrst", -10);
+    test(U"abcdefghijklmnopqrst", U"", 20);
+    test(U"abcdefghijklmnopqrst", U"abcde", 15);
+    test(U"abcdefghijklmnopqrst", U"abcdefghij", 10);
+    test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0);
+    }
+
+    {
+    test(u"", u"", 0);
+    test(u"", u"abcde", -5);
+    test(u"", u"abcdefghij", -10);
+    test(u"", u"abcdefghijklmnopqrst", -20);
+    test(u"abcde", u"", 5);
+    test(u"abcde", u"abcde", 0);
+    test(u"abcde", u"abcdefghij", -5);
+    test(u"abcde", u"abcdefghijklmnopqrst", -15);
+    test(u"abcdefghij", u"", 10);
+    test(u"abcdefghij", u"abcde", 5);
+    test(u"abcdefghij", u"abcdefghij", 0);
+    test(u"abcdefghij", u"abcdefghijklmnopqrst", -10);
+    test(u"abcdefghijklmnopqrst", u"", 20);
+    test(u"abcdefghijklmnopqrst", u"abcde", 15);
+    test(u"abcdefghijklmnopqrst", u"abcdefghij", 10);
+    test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0);
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+    static_assert ( sv1.compare("") == 0, "" );
+    static_assert ( sv1.compare("abcde") < 0, "" );
+    static_assert ( sv2.compare("") > 0, "" );
+    static_assert ( sv2.compare("abcde") == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.pointer_size.pass.cpp
new file mode 100644
index 0000000..a7a5c30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.pointer_size.pass.cpp
@@ -0,0 +1,458 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr int compare(size_type pos1, size_type n1, const charT* s) const;
+
+#include <string_view>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1,
+             size_t pos1, size_t n1, const CharT *s, int expected ) {
+#ifdef TEST_HAS_NO_EXCEPTIONS
+    if (pos1 <= sv1.size())
+        assert(sign(sv1.compare(pos1, n1, s)) == sign(expected));
+#else
+    try {
+        assert(sign(sv1.compare(pos1, n1, s)) == sign(expected));
+        assert(pos1 <= sv1.size());
+    }
+    catch (const std::out_of_range&) {
+        assert(pos1 > sv1.size());
+    }
+#endif
+}
+
+template<typename CharT>
+void
+test( const CharT *s1, size_t pos1, size_t n1, const CharT *s2, int expected)
+{
+    typedef std::basic_string_view<CharT> string_view_t;
+    string_view_t sv1 ( s1 );
+    test1 ( sv1, pos1, n1, s2, expected );
+}
+
+void test0()
+{
+    test("", 0, 0, "", 0);
+    test("", 0, 0, "abcde", -5);
+    test("", 0, 0, "abcdefghij", -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("", 0, 1, "", 0);
+    test("", 0, 1, "abcde", -5);
+    test("", 0, 1, "abcdefghij", -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", -20);
+    test("", 1, 0, "", 0);
+    test("", 1, 0, "abcde", 0);
+    test("", 1, 0, "abcdefghij", 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0);
+    test("abcde", 0, 0, "", 0);
+    test("abcde", 0, 0, "abcde", -5);
+    test("abcde", 0, 0, "abcdefghij", -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 0, 1, "", 1);
+    test("abcde", 0, 1, "abcde", -4);
+    test("abcde", 0, 1, "abcdefghij", -9);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", -19);
+    test("abcde", 0, 2, "", 2);
+    test("abcde", 0, 2, "abcde", -3);
+    test("abcde", 0, 2, "abcdefghij", -8);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", -18);
+    test("abcde", 0, 4, "", 4);
+    test("abcde", 0, 4, "abcde", -1);
+    test("abcde", 0, 4, "abcdefghij", -6);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", -16);
+    test("abcde", 0, 5, "", 5);
+    test("abcde", 0, 5, "abcde", 0);
+    test("abcde", 0, 5, "abcdefghij", -5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", -15);
+    test("abcde", 0, 6, "", 5);
+    test("abcde", 0, 6, "abcde", 0);
+    test("abcde", 0, 6, "abcdefghij", -5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", -15);
+    test("abcde", 1, 0, "", 0);
+    test("abcde", 1, 0, "abcde", -5);
+    test("abcde", 1, 0, "abcdefghij", -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 1, 1, "", 1);
+    test("abcde", 1, 1, "abcde", 1);
+    test("abcde", 1, 1, "abcdefghij", 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 2, "", 2);
+    test("abcde", 1, 2, "abcde", 1);
+    test("abcde", 1, 2, "abcdefghij", 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 3, "", 3);
+    test("abcde", 1, 3, "abcde", 1);
+    test("abcde", 1, 3, "abcdefghij", 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 4, "", 4);
+    test("abcde", 1, 4, "abcde", 1);
+    test("abcde", 1, 4, "abcdefghij", 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 5, "", 4);
+    test("abcde", 1, 5, "abcde", 1);
+    test("abcde", 1, 5, "abcdefghij", 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1);
+    test("abcde", 2, 0, "", 0);
+    test("abcde", 2, 0, "abcde", -5);
+    test("abcde", 2, 0, "abcdefghij", -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 2, 1, "", 1);
+    test("abcde", 2, 1, "abcde", 2);
+    test("abcde", 2, 1, "abcdefghij", 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 2);
+    test("abcde", 2, 2, "", 2);
+    test("abcde", 2, 2, "abcde", 2);
+    test("abcde", 2, 2, "abcdefghij", 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 2);
+    test("abcde", 2, 3, "", 3);
+    test("abcde", 2, 3, "abcde", 2);
+    test("abcde", 2, 3, "abcdefghij", 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 2);
+    test("abcde", 2, 4, "", 3);
+    test("abcde", 2, 4, "abcde", 2);
+    test("abcde", 2, 4, "abcdefghij", 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 2);
+    test("abcde", 4, 0, "", 0);
+    test("abcde", 4, 0, "abcde", -5);
+    test("abcde", 4, 0, "abcdefghij", -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 4, 1, "", 1);
+    test("abcde", 4, 1, "abcde", 4);
+    test("abcde", 4, 1, "abcdefghij", 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 4);
+    test("abcde", 4, 2, "", 1);
+    test("abcde", 4, 2, "abcde", 4);
+    test("abcde", 4, 2, "abcdefghij", 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 4);
+    test("abcde", 5, 0, "", 0);
+    test("abcde", 5, 0, "abcde", -5);
+    test("abcde", 5, 0, "abcdefghij", -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 5, 1, "", 0);
+    test("abcde", 5, 1, "abcde", -5);
+    test("abcde", 5, 1, "abcdefghij", -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", -20);
+}
+
+void test1()
+{
+    test("abcde", 6, 0, "", 0);
+    test("abcde", 6, 0, "abcde", 0);
+    test("abcde", 6, 0, "abcdefghij", 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0);
+    test("abcdefghij", 0, 0, "", 0);
+    test("abcdefghij", 0, 0, "abcde", -5);
+    test("abcdefghij", 0, 0, "abcdefghij", -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 0, 1, "", 1);
+    test("abcdefghij", 0, 1, "abcde", -4);
+    test("abcdefghij", 0, 1, "abcdefghij", -9);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", -19);
+    test("abcdefghij", 0, 5, "", 5);
+    test("abcdefghij", 0, 5, "abcde", 0);
+    test("abcdefghij", 0, 5, "abcdefghij", -5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", -15);
+    test("abcdefghij", 0, 9, "", 9);
+    test("abcdefghij", 0, 9, "abcde", 4);
+    test("abcdefghij", 0, 9, "abcdefghij", -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", -11);
+    test("abcdefghij", 0, 10, "", 10);
+    test("abcdefghij", 0, 10, "abcde", 5);
+    test("abcdefghij", 0, 10, "abcdefghij", 0);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", -10);
+    test("abcdefghij", 0, 11, "", 10);
+    test("abcdefghij", 0, 11, "abcde", 5);
+    test("abcdefghij", 0, 11, "abcdefghij", 0);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", -10);
+    test("abcdefghij", 1, 0, "", 0);
+    test("abcdefghij", 1, 0, "abcde", -5);
+    test("abcdefghij", 1, 0, "abcdefghij", -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 1, 1, "", 1);
+    test("abcdefghij", 1, 1, "abcde", 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 4, "", 4);
+    test("abcdefghij", 1, 4, "abcde", 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 8, "", 8);
+    test("abcdefghij", 1, 8, "abcde", 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 9, "", 9);
+    test("abcdefghij", 1, 9, "abcde", 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 10, "", 9);
+    test("abcdefghij", 1, 10, "abcde", 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 5, 0, "", 0);
+    test("abcdefghij", 5, 0, "abcde", -5);
+    test("abcdefghij", 5, 0, "abcdefghij", -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 5, 1, "", 1);
+    test("abcdefghij", 5, 1, "abcde", 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 2, "", 2);
+    test("abcdefghij", 5, 2, "abcde", 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 4, "", 4);
+    test("abcdefghij", 5, 4, "abcde", 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 5, "", 5);
+    test("abcdefghij", 5, 5, "abcde", 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 6, "", 5);
+    test("abcdefghij", 5, 6, "abcde", 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 9, 0, "", 0);
+    test("abcdefghij", 9, 0, "abcde", -5);
+    test("abcdefghij", 9, 0, "abcdefghij", -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 9, 1, "", 1);
+    test("abcdefghij", 9, 1, "abcde", 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 9);
+    test("abcdefghij", 9, 2, "", 1);
+    test("abcdefghij", 9, 2, "abcde", 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 9);
+    test("abcdefghij", 10, 0, "", 0);
+    test("abcdefghij", 10, 0, "abcde", -5);
+    test("abcdefghij", 10, 0, "abcdefghij", -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 10, 1, "", 0);
+    test("abcdefghij", 10, 1, "abcde", -5);
+    test("abcdefghij", 10, 1, "abcdefghij", -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 11, 0, "", 0);
+    test("abcdefghij", 11, 0, "abcde", 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0);
+}
+
+void test2()
+{
+    test("abcdefghijklmnopqrst", 0, 0, "", 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 0, 1, "", 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", -19);
+    test("abcdefghijklmnopqrst", 0, 10, "", 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", -10);
+    test("abcdefghijklmnopqrst", 0, 19, "", 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", -1);
+    test("abcdefghijklmnopqrst", 0, 20, "", 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0);
+    test("abcdefghijklmnopqrst", 0, 21, "", 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0);
+    test("abcdefghijklmnopqrst", 1, 0, "", 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 1, 1, "", 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 9, "", 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 18, "", 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 19, "", 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 20, "", 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 10, 0, "", 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 10, 1, "", 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 5, "", 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 9, "", 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 19, 0, "", 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 19, 1, "", 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19);
+    test("abcdefghijklmnopqrst", 19, 2, "", 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19);
+    test("abcdefghijklmnopqrst", 20, 0, "", 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 20, 1, "", 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 21, 0, "", 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0);
+}
+
+
+int main(int, char**)
+{
+    test0();
+    test1();
+    test2();
+
+    {
+    test("", 0, 0, "", 0);
+    test("", 0, 0, "abcde", -5);
+    test("", 0, 0, "abcdefghij", -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 0, 2, "", 5);
+    test("abcde", 0, 6,"abcde", 0);
+    test("abcde", 0, 6, "abcdefghij", -5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", -15);
+    test("abcdefghij", 3, 3, "", 10);
+    test("abcdefghij", 3, 3,"abcde", 5);
+    test("abcdefghij", 3, 3, "def", 0);
+    test("abcdefghij", 0, 4, "abcdefghijklmnopqrst", -10);
+    test("abcdefghijklmnopqrst", 5, 5, "", 20);
+    test("abcdefghijklmnopqrst", 0, 8, "abcde", 15);
+    test("abcdefghijklmnopqrst", 0, 12, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 0, static_cast<size_t>(-1), "abcdefghijklmnopqrst", 0);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    test(L"", 0, 0, L"", 0);
+    test(L"", 0, 0, L"abcde", -5);
+    test(L"", 0, 0, L"abcdefghij", -10);
+    test(L"", 0, 0, L"abcdefghijklmnopqrst", -20);
+    test(L"abcde", 0, 2, L"", 5);
+    test(L"abcde", 0, 6, L"abcde", 0);
+    test(L"abcde", 0, 6, L"abcdefghij", -5);
+    test(L"abcde", 0, 6, L"abcdefghijklmnopqrst", -15);
+    test(L"abcdefghij", 3, 3, L"", 10);
+    test(L"abcdefghij", 3, 3, L"abcde", 5);
+    test(L"abcdefghij", 3, 3, L"def", 0);
+    test(L"abcdefghij", 0, 4, L"abcdefghijklmnopqrst", -10);
+    test(L"abcdefghijklmnopqrst", 5, 5, L"", 20);
+    test(L"abcdefghijklmnopqrst", 0, 8, L"abcde", 15);
+    test(L"abcdefghijklmnopqrst", 0, 12, L"abcdefghij", 10);
+    test(L"abcdefghijklmnopqrst", 0, static_cast<size_t>(-1), L"abcdefghijklmnopqrst", 0);
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    test(U"", 0, 0, U"", 0);
+    test(U"", 0, 0, U"abcde", -5);
+    test(U"", 0, 0, U"abcdefghij", -10);
+    test(U"", 0, 0, U"abcdefghijklmnopqrst", -20);
+    test(U"abcde", 0, 2, U"", 5);
+    test(U"abcde", 0, 6, U"abcde", 0);
+    test(U"abcde", 0, 6, U"abcdefghij", -5);
+    test(U"abcde", 0, 6, U"abcdefghijklmnopqrst", -15);
+    test(U"abcdefghij", 3, 3, U"", 10);
+    test(U"abcdefghij", 3, 3, U"abcde", 5);
+    test(U"abcdefghij", 3, 3, U"def", 0);
+    test(U"abcdefghij", 0, 4, U"abcdefghijklmnopqrst", -10);
+    test(U"abcdefghijklmnopqrst", 5, 5, U"", 20);
+    test(U"abcdefghijklmnopqrst", 0, 8, U"abcde", 15);
+    test(U"abcdefghijklmnopqrst", 0, 12, U"abcdefghij", 10);
+    test(U"abcdefghijklmnopqrst", 0, static_cast<size_t>(-1), U"abcdefghijklmnopqrst", 0);
+    }
+
+    {
+    test(u"", 0, 0, u"", 0);
+    test(u"", 0, 0, u"abcde", -5);
+    test(u"", 0, 0, u"abcdefghij", -10);
+    test(u"", 0, 0, u"abcdefghijklmnopqrst", -20);
+    test(u"abcde", 0, 2, u"", 5);
+    test(u"abcde", 0, 6, u"abcde", 0);
+    test(u"abcde", 0, 6, u"abcdefghij", -5);
+    test(u"abcde", 0, 6, u"abcdefghijklmnopqrst", -15);
+    test(u"abcdefghij", 3, 3, u"", 10);
+    test(u"abcdefghij", 3, 3, u"abcde", 5);
+    test(u"abcdefghij", 3, 3, u"def", 0);
+    test(u"abcdefghij", 0, 4, u"abcdefghijklmnopqrst", -10);
+    test(u"abcdefghijklmnopqrst", 5, 5, u"", 20);
+    test(u"abcdefghijklmnopqrst", 0, 8, u"abcde", 15);
+    test(u"abcdefghijklmnopqrst", 0, 12, u"abcdefghij", 10);
+    test(u"abcdefghijklmnopqrst", 0, static_cast<size_t>(-1), u"abcdefghijklmnopqrst", 0);
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcde", 5 };
+    static_assert ( sv1.compare(0, 0, "") == 0, "" );
+    static_assert ( sv1.compare(0, 0, "abcde") < 0, "" );
+    static_assert ( sv2.compare(0, 2, "") > 0, "" );
+    static_assert ( sv2.compare(0, 6, "abcde") == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv.pass.cpp
new file mode 100644
index 0000000..477bfdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv.pass.cpp
@@ -0,0 +1,407 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr int compare(size_type pos1, size_type n1, basic_string_view str) const;
+
+#include <string_view>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1, size_t pos1, size_t n1,
+            std::basic_string_view<CharT> sv2, int expected ) {
+#ifdef TEST_HAS_NO_EXCEPTIONS
+    if (pos1 <= sv1.size())
+        assert(sign( sv1.compare(pos1, n1, sv2)) == sign(expected));
+#else
+    try {
+        assert(sign( sv1.compare(pos1, n1, sv2)) == sign(expected));
+        assert(pos1 <= sv1.size());
+    }
+    catch (const std::out_of_range&) {
+        assert(pos1 > sv1.size());
+    }
+#endif
+}
+
+
+template<typename CharT>
+void test ( const CharT *s1, size_t pos1, size_t n1, const CharT  *s2, int expected ) {
+    typedef std::basic_string_view<CharT> string_view_t;
+    string_view_t sv1 ( s1 );
+    string_view_t sv2 ( s2 );
+    test1(sv1, pos1, n1, sv2, expected);
+}
+
+void test0()
+{
+    test("", 0, 0, "", 0);
+    test("", 0, 0, "abcde", -5);
+    test("", 0, 0, "abcdefghij", -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("", 0, 1, "", 0);
+    test("", 0, 1, "abcde", -5);
+    test("", 0, 1, "abcdefghij", -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", -20);
+    test("", 1, 0, "", 0);
+    test("", 1, 0, "abcde", 0);
+    test("", 1, 0, "abcdefghij", 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0);
+    test("abcde", 0, 0, "", 0);
+    test("abcde", 0, 0, "abcde", -5);
+    test("abcde", 0, 0, "abcdefghij", -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 0, 1, "", 1);
+    test("abcde", 0, 1, "abcde", -4);
+    test("abcde", 0, 1, "abcdefghij", -9);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", -19);
+    test("abcde", 0, 2, "", 2);
+    test("abcde", 0, 2, "abcde", -3);
+    test("abcde", 0, 2, "abcdefghij", -8);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", -18);
+    test("abcde", 0, 4, "", 4);
+    test("abcde", 0, 4, "abcde", -1);
+    test("abcde", 0, 4, "abcdefghij", -6);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", -16);
+    test("abcde", 0, 5, "", 5);
+    test("abcde", 0, 5, "abcde", 0);
+    test("abcde", 0, 5, "abcdefghij", -5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", -15);
+    test("abcde", 0, 6, "", 5);
+    test("abcde", 0, 6, "abcde", 0);
+    test("abcde", 0, 6, "abcdefghij", -5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", -15);
+    test("abcde", 1, 0, "", 0);
+    test("abcde", 1, 0, "abcde", -5);
+    test("abcde", 1, 0, "abcdefghij", -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 1, 1, "", 1);
+    test("abcde", 1, 1, "abcde", 1);
+    test("abcde", 1, 1, "abcdefghij", 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 2, "", 2);
+    test("abcde", 1, 2, "abcde", 1);
+    test("abcde", 1, 2, "abcdefghij", 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 3, "", 3);
+    test("abcde", 1, 3, "abcde", 1);
+    test("abcde", 1, 3, "abcdefghij", 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 4, "", 4);
+    test("abcde", 1, 4, "abcde", 1);
+    test("abcde", 1, 4, "abcdefghij", 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1);
+    test("abcde", 1, 5, "", 4);
+    test("abcde", 1, 5, "abcde", 1);
+    test("abcde", 1, 5, "abcdefghij", 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1);
+    test("abcde", 2, 0, "", 0);
+    test("abcde", 2, 0, "abcde", -5);
+    test("abcde", 2, 0, "abcdefghij", -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 2, 1, "", 1);
+    test("abcde", 2, 1, "abcde", 2);
+    test("abcde", 2, 1, "abcdefghij", 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 2);
+    test("abcde", 2, 2, "", 2);
+    test("abcde", 2, 2, "abcde", 2);
+    test("abcde", 2, 2, "abcdefghij", 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 2);
+    test("abcde", 2, 3, "", 3);
+    test("abcde", 2, 3, "abcde", 2);
+    test("abcde", 2, 3, "abcdefghij", 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 2);
+    test("abcde", 2, 4, "", 3);
+    test("abcde", 2, 4, "abcde", 2);
+    test("abcde", 2, 4, "abcdefghij", 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 2);
+    test("abcde", 4, 0, "", 0);
+    test("abcde", 4, 0, "abcde", -5);
+    test("abcde", 4, 0, "abcdefghij", -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 4, 1, "", 1);
+    test("abcde", 4, 1, "abcde", 4);
+    test("abcde", 4, 1, "abcdefghij", 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 4);
+    test("abcde", 4, 2, "", 1);
+    test("abcde", 4, 2, "abcde", 4);
+    test("abcde", 4, 2, "abcdefghij", 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 4);
+    test("abcde", 5, 0, "", 0);
+    test("abcde", 5, 0, "abcde", -5);
+    test("abcde", 5, 0, "abcdefghij", -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", -20);
+    test("abcde", 5, 1, "", 0);
+    test("abcde", 5, 1, "abcde", -5);
+    test("abcde", 5, 1, "abcdefghij", -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", -20);
+}
+
+void test1()
+{
+    test("abcde", 6, 0, "", 0);
+    test("abcde", 6, 0, "abcde", 0);
+    test("abcde", 6, 0, "abcdefghij", 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0);
+    test("abcdefghij", 0, 0, "", 0);
+    test("abcdefghij", 0, 0, "abcde", -5);
+    test("abcdefghij", 0, 0, "abcdefghij", -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 0, 1, "", 1);
+    test("abcdefghij", 0, 1, "abcde", -4);
+    test("abcdefghij", 0, 1, "abcdefghij", -9);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", -19);
+    test("abcdefghij", 0, 5, "", 5);
+    test("abcdefghij", 0, 5, "abcde", 0);
+    test("abcdefghij", 0, 5, "abcdefghij", -5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", -15);
+    test("abcdefghij", 0, 9, "", 9);
+    test("abcdefghij", 0, 9, "abcde", 4);
+    test("abcdefghij", 0, 9, "abcdefghij", -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", -11);
+    test("abcdefghij", 0, 10, "", 10);
+    test("abcdefghij", 0, 10, "abcde", 5);
+    test("abcdefghij", 0, 10, "abcdefghij", 0);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", -10);
+    test("abcdefghij", 0, 11, "", 10);
+    test("abcdefghij", 0, 11, "abcde", 5);
+    test("abcdefghij", 0, 11, "abcdefghij", 0);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", -10);
+    test("abcdefghij", 1, 0, "", 0);
+    test("abcdefghij", 1, 0, "abcde", -5);
+    test("abcdefghij", 1, 0, "abcdefghij", -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 1, 1, "", 1);
+    test("abcdefghij", 1, 1, "abcde", 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 4, "", 4);
+    test("abcdefghij", 1, 4, "abcde", 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 8, "", 8);
+    test("abcdefghij", 1, 8, "abcde", 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 9, "", 9);
+    test("abcdefghij", 1, 9, "abcde", 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 1, 10, "", 9);
+    test("abcdefghij", 1, 10, "abcde", 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1);
+    test("abcdefghij", 5, 0, "", 0);
+    test("abcdefghij", 5, 0, "abcde", -5);
+    test("abcdefghij", 5, 0, "abcdefghij", -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 5, 1, "", 1);
+    test("abcdefghij", 5, 1, "abcde", 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 2, "", 2);
+    test("abcdefghij", 5, 2, "abcde", 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 4, "", 4);
+    test("abcdefghij", 5, 4, "abcde", 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 5, "", 5);
+    test("abcdefghij", 5, 5, "abcde", 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 5, 6, "", 5);
+    test("abcdefghij", 5, 6, "abcde", 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 5);
+    test("abcdefghij", 9, 0, "", 0);
+    test("abcdefghij", 9, 0, "abcde", -5);
+    test("abcdefghij", 9, 0, "abcdefghij", -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 9, 1, "", 1);
+    test("abcdefghij", 9, 1, "abcde", 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 9);
+    test("abcdefghij", 9, 2, "", 1);
+    test("abcdefghij", 9, 2, "abcde", 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 9);
+    test("abcdefghij", 10, 0, "", 0);
+    test("abcdefghij", 10, 0, "abcde", -5);
+    test("abcdefghij", 10, 0, "abcdefghij", -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 10, 1, "", 0);
+    test("abcdefghij", 10, 1, "abcde", -5);
+    test("abcdefghij", 10, 1, "abcdefghij", -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", -20);
+    test("abcdefghij", 11, 0, "", 0);
+    test("abcdefghij", 11, 0, "abcde", 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0);
+}
+
+void test2()
+{
+    test("abcdefghijklmnopqrst", 0, 0, "", 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 0, 1, "", 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", -19);
+    test("abcdefghijklmnopqrst", 0, 10, "", 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", -10);
+    test("abcdefghijklmnopqrst", 0, 19, "", 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", -1);
+    test("abcdefghijklmnopqrst", 0, 20, "", 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0);
+    test("abcdefghijklmnopqrst", 0, 21, "", 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0);
+    test("abcdefghijklmnopqrst", 1, 0, "", 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 1, 1, "", 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 9, "", 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 18, "", 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 19, "", 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 1, 20, "", 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1);
+    test("abcdefghijklmnopqrst", 10, 0, "", 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 10, 1, "", 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 5, "", 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 9, "", 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10);
+    test("abcdefghijklmnopqrst", 19, 0, "", 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 19, 1, "", 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19);
+    test("abcdefghijklmnopqrst", 19, 2, "", 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19);
+    test("abcdefghijklmnopqrst", 20, 0, "", 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 20, 1, "", 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", -20);
+    test("abcdefghijklmnopqrst", 21, 0, "", 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0);
+}
+
+
+int main(int, char**) {
+    test0();
+    test1();
+    test2();
+
+    {
+    test("abcde", 5, 1, "", 0);
+    test("abcde", 2, 4, "", 3);
+    test("abcde", 2, 4, "abcde", 2);
+    test("ABCde", 2, 4, "abcde", -1);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    test(L"abcde", 5, 1, L"", 0);
+    test(L"abcde", 2, 4, L"", 3);
+    test(L"abcde", 2, 4, L"abcde", 2);
+    test(L"ABCde", 2, 4, L"abcde", -1);
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    test(u"abcde", 5, 1, u"", 0);
+    test(u"abcde", 2, 4, u"", 3);
+    test(u"abcde", 2, 4, u"abcde", 2);
+    test(u"ABCde", 2, 4, u"abcde", -1);
+    }
+
+    {
+    test(U"abcde", 5, 1, U"", 0);
+    test(U"abcde", 2, 4, U"", 3);
+    test(U"abcde", 2, 4, U"abcde", 2);
+    test(U"ABCde", 2, 4, U"abcde", -1);
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1 { "abcde", 5 };
+    constexpr SV  sv2 { "abcde", 0 };
+    static_assert ( sv1.compare(5, 1, sv2) == 0, "" );
+    static_assert ( sv1.compare(2, 4, sv2) > 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv_pointer_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv_pointer_size.pass.cpp
new file mode 100644
index 0000000..f0c4a79
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv_pointer_size.pass.cpp
@@ -0,0 +1,1358 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr int compare(size_type pos1, size_type n1,
+//             const charT* s, size_type n2) const;
+
+#include <string_view>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1, size_t pos1, size_t n1,
+             const CharT *s2, size_t n2, int expected ) {
+#ifdef TEST_HAS_NO_EXCEPTIONS
+    if (pos1 <= sv1.size())
+        assert(sign(sv1.compare(pos1, n1, s2, n2)) == sign(expected));
+#else
+    try {
+        assert(sign(sv1.compare(pos1, n1, s2, n2)) == sign(expected));
+        assert(pos1 <= sv1.size());
+        }
+    catch (const std::out_of_range&) {
+        assert(pos1 > sv1.size());
+        }
+#endif
+}
+
+
+template<typename CharT>
+void test ( const CharT *s1, size_t pos1, size_t n1,
+            const CharT *s2, size_t n2,
+            int expected ) {
+    typedef std::basic_string_view<CharT> string_view_t;
+    string_view_t sv1 ( s1 );
+    test1 (sv1, pos1, n1, s2, n2, expected);
+}
+
+
+void test0()
+{
+    test("", 0, 0, "", 0, 0);
+    test("", 0, 0, "abcde", 0, 0);
+    test("", 0, 0, "abcde", 1, -1);
+    test("", 0, 0, "abcde", 2, -2);
+    test("", 0, 0, "abcde", 4, -4);
+    test("", 0, 0, "abcde", 5, -5);
+    test("", 0, 0, "abcdefghij", 0, 0);
+    test("", 0, 0, "abcdefghij", 1, -1);
+    test("", 0, 0, "abcdefghij", 5, -5);
+    test("", 0, 0, "abcdefghij", 9, -9);
+    test("", 0, 0, "abcdefghij", 10, -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("", 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("", 0, 1, "", 0, 0);
+    test("", 0, 1, "abcde", 0, 0);
+    test("", 0, 1, "abcde", 1, -1);
+    test("", 0, 1, "abcde", 2, -2);
+    test("", 0, 1, "abcde", 4, -4);
+    test("", 0, 1, "abcde", 5, -5);
+    test("", 0, 1, "abcdefghij", 0, 0);
+    test("", 0, 1, "abcdefghij", 1, -1);
+    test("", 0, 1, "abcdefghij", 5, -5);
+    test("", 0, 1, "abcdefghij", 9, -9);
+    test("", 0, 1, "abcdefghij", 10, -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, -1);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", 19, -19);
+    test("", 0, 1, "abcdefghijklmnopqrst", 20, -20);
+    test("", 1, 0, "", 0, 0);
+    test("", 1, 0, "abcde", 0, 0);
+    test("", 1, 0, "abcde", 1, 0);
+    test("", 1, 0, "abcde", 2, 0);
+    test("", 1, 0, "abcde", 4, 0);
+    test("", 1, 0, "abcde", 5, 0);
+    test("", 1, 0, "abcdefghij", 0, 0);
+    test("", 1, 0, "abcdefghij", 1, 0);
+    test("", 1, 0, "abcdefghij", 5, 0);
+    test("", 1, 0, "abcdefghij", 9, 0);
+    test("", 1, 0, "abcdefghij", 10, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 19, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 20, 0);
+    test("abcde", 0, 0, "", 0, 0);
+    test("abcde", 0, 0, "abcde", 0, 0);
+    test("abcde", 0, 0, "abcde", 1, -1);
+    test("abcde", 0, 0, "abcde", 2, -2);
+    test("abcde", 0, 0, "abcde", 4, -4);
+    test("abcde", 0, 0, "abcde", 5, -5);
+    test("abcde", 0, 0, "abcdefghij", 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 1, -1);
+    test("abcde", 0, 0, "abcdefghij", 5, -5);
+    test("abcde", 0, 0, "abcdefghij", 9, -9);
+    test("abcde", 0, 0, "abcdefghij", 10, -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcde", 0, 1, "", 0, 1);
+    test("abcde", 0, 1, "abcde", 0, 1);
+    test("abcde", 0, 1, "abcde", 1, 0);
+    test("abcde", 0, 1, "abcde", 2, -1);
+    test("abcde", 0, 1, "abcde", 4, -3);
+    test("abcde", 0, 1, "abcde", 5, -4);
+    test("abcde", 0, 1, "abcdefghij", 0, 1);
+    test("abcde", 0, 1, "abcdefghij", 1, 0);
+    test("abcde", 0, 1, "abcdefghij", 5, -4);
+    test("abcde", 0, 1, "abcdefghij", 9, -8);
+    test("abcde", 0, 1, "abcdefghij", 10, -9);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 0);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, -9);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 19, -18);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 20, -19);
+    test("abcde", 0, 2, "", 0, 2);
+    test("abcde", 0, 2, "abcde", 0, 2);
+    test("abcde", 0, 2, "abcde", 1, 1);
+    test("abcde", 0, 2, "abcde", 2, 0);
+    test("abcde", 0, 2, "abcde", 4, -2);
+    test("abcde", 0, 2, "abcde", 5, -3);
+    test("abcde", 0, 2, "abcdefghij", 0, 2);
+    test("abcde", 0, 2, "abcdefghij", 1, 1);
+    test("abcde", 0, 2, "abcdefghij", 5, -3);
+    test("abcde", 0, 2, "abcdefghij", 9, -7);
+    test("abcde", 0, 2, "abcdefghij", 10, -8);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, -8);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 19, -17);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 20, -18);
+    test("abcde", 0, 4, "", 0, 4);
+    test("abcde", 0, 4, "abcde", 0, 4);
+    test("abcde", 0, 4, "abcde", 1, 3);
+    test("abcde", 0, 4, "abcde", 2, 2);
+}
+
+
+void test1()
+{
+    test("abcde", 0, 4, "abcde", 4, 0);
+    test("abcde", 0, 4, "abcde", 5, -1);
+    test("abcde", 0, 4, "abcdefghij", 0, 4);
+    test("abcde", 0, 4, "abcdefghij", 1, 3);
+    test("abcde", 0, 4, "abcdefghij", 5, -1);
+    test("abcde", 0, 4, "abcdefghij", 9, -5);
+    test("abcde", 0, 4, "abcdefghij", 10, -6);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 3);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, -6);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 19, -15);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 20, -16);
+    test("abcde", 0, 5, "", 0, 5);
+    test("abcde", 0, 5, "abcde", 0, 5);
+    test("abcde", 0, 5, "abcde", 1, 4);
+    test("abcde", 0, 5, "abcde", 2, 3);
+    test("abcde", 0, 5, "abcde", 4, 1);
+    test("abcde", 0, 5, "abcde", 5, 0);
+    test("abcde", 0, 5, "abcdefghij", 0, 5);
+    test("abcde", 0, 5, "abcdefghij", 1, 4);
+    test("abcde", 0, 5, "abcdefghij", 5, 0);
+    test("abcde", 0, 5, "abcdefghij", 9, -4);
+    test("abcde", 0, 5, "abcdefghij", 10, -5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 4);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, -5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 19, -14);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 20, -15);
+    test("abcde", 0, 6, "", 0, 5);
+    test("abcde", 0, 6, "abcde", 0, 5);
+    test("abcde", 0, 6, "abcde", 1, 4);
+    test("abcde", 0, 6, "abcde", 2, 3);
+    test("abcde", 0, 6, "abcde", 4, 1);
+    test("abcde", 0, 6, "abcde", 5, 0);
+    test("abcde", 0, 6, "abcdefghij", 0, 5);
+    test("abcde", 0, 6, "abcdefghij", 1, 4);
+    test("abcde", 0, 6, "abcdefghij", 5, 0);
+    test("abcde", 0, 6, "abcdefghij", 9, -4);
+    test("abcde", 0, 6, "abcdefghij", 10, -5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 4);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, -5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 19, -14);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 20, -15);
+    test("abcde", 1, 0, "", 0, 0);
+    test("abcde", 1, 0, "abcde", 0, 0);
+    test("abcde", 1, 0, "abcde", 1, -1);
+    test("abcde", 1, 0, "abcde", 2, -2);
+    test("abcde", 1, 0, "abcde", 4, -4);
+    test("abcde", 1, 0, "abcde", 5, -5);
+    test("abcde", 1, 0, "abcdefghij", 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 1, -1);
+    test("abcde", 1, 0, "abcdefghij", 5, -5);
+    test("abcde", 1, 0, "abcdefghij", 9, -9);
+    test("abcde", 1, 0, "abcdefghij", 10, -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcde", 1, 1, "", 0, 1);
+    test("abcde", 1, 1, "abcde", 0, 1);
+    test("abcde", 1, 1, "abcde", 1, 1);
+    test("abcde", 1, 1, "abcde", 2, 1);
+    test("abcde", 1, 1, "abcde", 4, 1);
+    test("abcde", 1, 1, "abcde", 5, 1);
+    test("abcde", 1, 1, "abcdefghij", 0, 1);
+    test("abcde", 1, 1, "abcdefghij", 1, 1);
+    test("abcde", 1, 1, "abcdefghij", 5, 1);
+    test("abcde", 1, 1, "abcdefghij", 9, 1);
+    test("abcde", 1, 1, "abcdefghij", 10, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 19, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 20, 1);
+    test("abcde", 1, 2, "", 0, 2);
+    test("abcde", 1, 2, "abcde", 0, 2);
+    test("abcde", 1, 2, "abcde", 1, 1);
+    test("abcde", 1, 2, "abcde", 2, 1);
+    test("abcde", 1, 2, "abcde", 4, 1);
+    test("abcde", 1, 2, "abcde", 5, 1);
+    test("abcde", 1, 2, "abcdefghij", 0, 2);
+    test("abcde", 1, 2, "abcdefghij", 1, 1);
+    test("abcde", 1, 2, "abcdefghij", 5, 1);
+    test("abcde", 1, 2, "abcdefghij", 9, 1);
+    test("abcde", 1, 2, "abcdefghij", 10, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 19, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 20, 1);
+    test("abcde", 1, 3, "", 0, 3);
+    test("abcde", 1, 3, "abcde", 0, 3);
+    test("abcde", 1, 3, "abcde", 1, 1);
+    test("abcde", 1, 3, "abcde", 2, 1);
+    test("abcde", 1, 3, "abcde", 4, 1);
+    test("abcde", 1, 3, "abcde", 5, 1);
+    test("abcde", 1, 3, "abcdefghij", 0, 3);
+    test("abcde", 1, 3, "abcdefghij", 1, 1);
+}
+
+
+void test2()
+{
+    test("abcde", 1, 3, "abcdefghij", 5, 1);
+    test("abcde", 1, 3, "abcdefghij", 9, 1);
+    test("abcde", 1, 3, "abcdefghij", 10, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 19, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 20, 1);
+    test("abcde", 1, 4, "", 0, 4);
+    test("abcde", 1, 4, "abcde", 0, 4);
+    test("abcde", 1, 4, "abcde", 1, 1);
+    test("abcde", 1, 4, "abcde", 2, 1);
+    test("abcde", 1, 4, "abcde", 4, 1);
+    test("abcde", 1, 4, "abcde", 5, 1);
+    test("abcde", 1, 4, "abcdefghij", 0, 4);
+    test("abcde", 1, 4, "abcdefghij", 1, 1);
+    test("abcde", 1, 4, "abcdefghij", 5, 1);
+    test("abcde", 1, 4, "abcdefghij", 9, 1);
+    test("abcde", 1, 4, "abcdefghij", 10, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 19, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 20, 1);
+    test("abcde", 1, 5, "", 0, 4);
+    test("abcde", 1, 5, "abcde", 0, 4);
+    test("abcde", 1, 5, "abcde", 1, 1);
+    test("abcde", 1, 5, "abcde", 2, 1);
+    test("abcde", 1, 5, "abcde", 4, 1);
+    test("abcde", 1, 5, "abcde", 5, 1);
+    test("abcde", 1, 5, "abcdefghij", 0, 4);
+    test("abcde", 1, 5, "abcdefghij", 1, 1);
+    test("abcde", 1, 5, "abcdefghij", 5, 1);
+    test("abcde", 1, 5, "abcdefghij", 9, 1);
+    test("abcde", 1, 5, "abcdefghij", 10, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 19, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 20, 1);
+    test("abcde", 2, 0, "", 0, 0);
+    test("abcde", 2, 0, "abcde", 0, 0);
+    test("abcde", 2, 0, "abcde", 1, -1);
+    test("abcde", 2, 0, "abcde", 2, -2);
+    test("abcde", 2, 0, "abcde", 4, -4);
+    test("abcde", 2, 0, "abcde", 5, -5);
+    test("abcde", 2, 0, "abcdefghij", 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 1, -1);
+    test("abcde", 2, 0, "abcdefghij", 5, -5);
+    test("abcde", 2, 0, "abcdefghij", 9, -9);
+    test("abcde", 2, 0, "abcdefghij", 10, -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcde", 2, 1, "", 0, 1);
+    test("abcde", 2, 1, "abcde", 0, 1);
+    test("abcde", 2, 1, "abcde", 1, 2);
+    test("abcde", 2, 1, "abcde", 2, 2);
+    test("abcde", 2, 1, "abcde", 4, 2);
+    test("abcde", 2, 1, "abcde", 5, 2);
+    test("abcde", 2, 1, "abcdefghij", 0, 1);
+    test("abcde", 2, 1, "abcdefghij", 1, 2);
+    test("abcde", 2, 1, "abcdefghij", 5, 2);
+    test("abcde", 2, 1, "abcdefghij", 9, 2);
+    test("abcde", 2, 1, "abcdefghij", 10, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 19, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 20, 2);
+    test("abcde", 2, 2, "", 0, 2);
+    test("abcde", 2, 2, "abcde", 0, 2);
+    test("abcde", 2, 2, "abcde", 1, 2);
+    test("abcde", 2, 2, "abcde", 2, 2);
+    test("abcde", 2, 2, "abcde", 4, 2);
+    test("abcde", 2, 2, "abcde", 5, 2);
+    test("abcde", 2, 2, "abcdefghij", 0, 2);
+    test("abcde", 2, 2, "abcdefghij", 1, 2);
+    test("abcde", 2, 2, "abcdefghij", 5, 2);
+    test("abcde", 2, 2, "abcdefghij", 9, 2);
+    test("abcde", 2, 2, "abcdefghij", 10, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 19, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 20, 2);
+    test("abcde", 2, 3, "", 0, 3);
+    test("abcde", 2, 3, "abcde", 0, 3);
+    test("abcde", 2, 3, "abcde", 1, 2);
+    test("abcde", 2, 3, "abcde", 2, 2);
+    test("abcde", 2, 3, "abcde", 4, 2);
+    test("abcde", 2, 3, "abcde", 5, 2);
+    test("abcde", 2, 3, "abcdefghij", 0, 3);
+    test("abcde", 2, 3, "abcdefghij", 1, 2);
+    test("abcde", 2, 3, "abcdefghij", 5, 2);
+    test("abcde", 2, 3, "abcdefghij", 9, 2);
+    test("abcde", 2, 3, "abcdefghij", 10, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 3);
+}
+
+
+void test3()
+{
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 19, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 20, 2);
+    test("abcde", 2, 4, "", 0, 3);
+    test("abcde", 2, 4, "abcde", 0, 3);
+    test("abcde", 2, 4, "abcde", 1, 2);
+    test("abcde", 2, 4, "abcde", 2, 2);
+    test("abcde", 2, 4, "abcde", 4, 2);
+    test("abcde", 2, 4, "abcde", 5, 2);
+    test("abcde", 2, 4, "abcdefghij", 0, 3);
+    test("abcde", 2, 4, "abcdefghij", 1, 2);
+    test("abcde", 2, 4, "abcdefghij", 5, 2);
+    test("abcde", 2, 4, "abcdefghij", 9, 2);
+    test("abcde", 2, 4, "abcdefghij", 10, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 19, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 20, 2);
+    test("abcde", 4, 0, "", 0, 0);
+    test("abcde", 4, 0, "abcde", 0, 0);
+    test("abcde", 4, 0, "abcde", 1, -1);
+    test("abcde", 4, 0, "abcde", 2, -2);
+    test("abcde", 4, 0, "abcde", 4, -4);
+    test("abcde", 4, 0, "abcde", 5, -5);
+    test("abcde", 4, 0, "abcdefghij", 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 1, -1);
+    test("abcde", 4, 0, "abcdefghij", 5, -5);
+    test("abcde", 4, 0, "abcdefghij", 9, -9);
+    test("abcde", 4, 0, "abcdefghij", 10, -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcde", 4, 1, "", 0, 1);
+    test("abcde", 4, 1, "abcde", 0, 1);
+    test("abcde", 4, 1, "abcde", 1, 4);
+    test("abcde", 4, 1, "abcde", 2, 4);
+    test("abcde", 4, 1, "abcde", 4, 4);
+    test("abcde", 4, 1, "abcde", 5, 4);
+    test("abcde", 4, 1, "abcdefghij", 0, 1);
+    test("abcde", 4, 1, "abcdefghij", 1, 4);
+    test("abcde", 4, 1, "abcdefghij", 5, 4);
+    test("abcde", 4, 1, "abcdefghij", 9, 4);
+    test("abcde", 4, 1, "abcdefghij", 10, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 19, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 20, 4);
+    test("abcde", 4, 2, "", 0, 1);
+    test("abcde", 4, 2, "abcde", 0, 1);
+    test("abcde", 4, 2, "abcde", 1, 4);
+    test("abcde", 4, 2, "abcde", 2, 4);
+    test("abcde", 4, 2, "abcde", 4, 4);
+    test("abcde", 4, 2, "abcde", 5, 4);
+    test("abcde", 4, 2, "abcdefghij", 0, 1);
+    test("abcde", 4, 2, "abcdefghij", 1, 4);
+    test("abcde", 4, 2, "abcdefghij", 5, 4);
+    test("abcde", 4, 2, "abcdefghij", 9, 4);
+    test("abcde", 4, 2, "abcdefghij", 10, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 1);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 19, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 20, 4);
+    test("abcde", 5, 0, "", 0, 0);
+    test("abcde", 5, 0, "abcde", 0, 0);
+    test("abcde", 5, 0, "abcde", 1, -1);
+    test("abcde", 5, 0, "abcde", 2, -2);
+    test("abcde", 5, 0, "abcde", 4, -4);
+    test("abcde", 5, 0, "abcde", 5, -5);
+    test("abcde", 5, 0, "abcdefghij", 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 1, -1);
+    test("abcde", 5, 0, "abcdefghij", 5, -5);
+    test("abcde", 5, 0, "abcdefghij", 9, -9);
+    test("abcde", 5, 0, "abcdefghij", 10, -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcde", 5, 1, "", 0, 0);
+    test("abcde", 5, 1, "abcde", 0, 0);
+    test("abcde", 5, 1, "abcde", 1, -1);
+    test("abcde", 5, 1, "abcde", 2, -2);
+    test("abcde", 5, 1, "abcde", 4, -4);
+    test("abcde", 5, 1, "abcde", 5, -5);
+    test("abcde", 5, 1, "abcdefghij", 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 1, -1);
+    test("abcde", 5, 1, "abcdefghij", 5, -5);
+    test("abcde", 5, 1, "abcdefghij", 9, -9);
+    test("abcde", 5, 1, "abcdefghij", 10, -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, -1);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 19, -19);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 20, -20);
+}
+
+
+void test4()
+{
+    test("abcde", 6, 0, "", 0, 0);
+    test("abcde", 6, 0, "abcde", 0, 0);
+    test("abcde", 6, 0, "abcde", 1, 0);
+    test("abcde", 6, 0, "abcde", 2, 0);
+    test("abcde", 6, 0, "abcde", 4, 0);
+    test("abcde", 6, 0, "abcde", 5, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 0);
+    test("abcde", 6, 0, "abcdefghij", 9, 0);
+    test("abcde", 6, 0, "abcdefghij", 10, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 19, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 20, 0);
+    test("abcdefghij", 0, 0, "", 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 1, -1);
+    test("abcdefghij", 0, 0, "abcde", 2, -2);
+    test("abcdefghij", 0, 0, "abcde", 4, -4);
+    test("abcdefghij", 0, 0, "abcde", 5, -5);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, -5);
+    test("abcdefghij", 0, 0, "abcdefghij", 9, -9);
+    test("abcdefghij", 0, 0, "abcdefghij", 10, -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghij", 0, 1, "", 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 1, 0);
+    test("abcdefghij", 0, 1, "abcde", 2, -1);
+    test("abcdefghij", 0, 1, "abcde", 4, -3);
+    test("abcdefghij", 0, 1, "abcde", 5, -4);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 0);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, -4);
+    test("abcdefghij", 0, 1, "abcdefghij", 9, -8);
+    test("abcdefghij", 0, 1, "abcdefghij", 10, -9);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 0);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, -9);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 19, -18);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 20, -19);
+    test("abcdefghij", 0, 5, "", 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 1, 4);
+    test("abcdefghij", 0, 5, "abcde", 2, 3);
+    test("abcdefghij", 0, 5, "abcde", 4, 1);
+    test("abcdefghij", 0, 5, "abcde", 5, 0);
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 4);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 0);
+    test("abcdefghij", 0, 5, "abcdefghij", 9, -4);
+    test("abcdefghij", 0, 5, "abcdefghij", 10, -5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 4);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, -5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 19, -14);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 20, -15);
+    test("abcdefghij", 0, 9, "", 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 1, 8);
+    test("abcdefghij", 0, 9, "abcde", 2, 7);
+    test("abcdefghij", 0, 9, "abcde", 4, 5);
+    test("abcdefghij", 0, 9, "abcde", 5, 4);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 8);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 4);
+    test("abcdefghij", 0, 9, "abcdefghij", 9, 0);
+    test("abcdefghij", 0, 9, "abcdefghij", 10, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 8);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 19, -10);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 20, -11);
+    test("abcdefghij", 0, 10, "", 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 1, 9);
+    test("abcdefghij", 0, 10, "abcde", 2, 8);
+    test("abcdefghij", 0, 10, "abcde", 4, 6);
+    test("abcdefghij", 0, 10, "abcde", 5, 5);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 9);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 5);
+    test("abcdefghij", 0, 10, "abcdefghij", 9, 1);
+    test("abcdefghij", 0, 10, "abcdefghij", 10, 0);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 9);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 0);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 19, -9);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 20, -10);
+    test("abcdefghij", 0, 11, "", 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 1, 9);
+    test("abcdefghij", 0, 11, "abcde", 2, 8);
+}
+
+
+void test5()
+{
+    test("abcdefghij", 0, 11, "abcde", 4, 6);
+    test("abcdefghij", 0, 11, "abcde", 5, 5);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 9);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 5);
+    test("abcdefghij", 0, 11, "abcdefghij", 9, 1);
+    test("abcdefghij", 0, 11, "abcdefghij", 10, 0);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 9);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 0);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 19, -9);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 20, -10);
+    test("abcdefghij", 1, 0, "", 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 1, -1);
+    test("abcdefghij", 1, 0, "abcde", 2, -2);
+    test("abcdefghij", 1, 0, "abcde", 4, -4);
+    test("abcdefghij", 1, 0, "abcde", 5, -5);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, -5);
+    test("abcdefghij", 1, 0, "abcdefghij", 9, -9);
+    test("abcdefghij", 1, 0, "abcdefghij", 10, -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghij", 1, 1, "", 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 1, 1);
+    test("abcdefghij", 1, 1, "abcde", 2, 1);
+    test("abcdefghij", 1, 1, "abcde", 4, 1);
+    test("abcdefghij", 1, 1, "abcde", 5, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 9, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 10, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghij", 1, 4, "", 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 1, 1);
+    test("abcdefghij", 1, 4, "abcde", 2, 1);
+    test("abcdefghij", 1, 4, "abcde", 4, 1);
+    test("abcdefghij", 1, 4, "abcde", 5, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 9, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 10, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghij", 1, 8, "", 0, 8);
+    test("abcdefghij", 1, 8, "abcde", 0, 8);
+    test("abcdefghij", 1, 8, "abcde", 1, 1);
+    test("abcdefghij", 1, 8, "abcde", 2, 1);
+    test("abcdefghij", 1, 8, "abcde", 4, 1);
+    test("abcdefghij", 1, 8, "abcde", 5, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 9, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 10, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghij", 1, 9, "", 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 1, 1);
+    test("abcdefghij", 1, 9, "abcde", 2, 1);
+    test("abcdefghij", 1, 9, "abcde", 4, 1);
+    test("abcdefghij", 1, 9, "abcde", 5, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 9, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 10, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghij", 1, 10, "", 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 1, 1);
+    test("abcdefghij", 1, 10, "abcde", 2, 1);
+    test("abcdefghij", 1, 10, "abcde", 4, 1);
+    test("abcdefghij", 1, 10, "abcde", 5, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 1);
+}
+
+
+void test6()
+{
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 9, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 10, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghij", 5, 0, "", 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 1, -1);
+    test("abcdefghij", 5, 0, "abcde", 2, -2);
+    test("abcdefghij", 5, 0, "abcde", 4, -4);
+    test("abcdefghij", 5, 0, "abcde", 5, -5);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, -5);
+    test("abcdefghij", 5, 0, "abcdefghij", 9, -9);
+    test("abcdefghij", 5, 0, "abcdefghij", 10, -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghij", 5, 1, "", 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 1, 5);
+    test("abcdefghij", 5, 1, "abcde", 2, 5);
+    test("abcdefghij", 5, 1, "abcde", 4, 5);
+    test("abcdefghij", 5, 1, "abcde", 5, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 9, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 10, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 19, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 20, 5);
+    test("abcdefghij", 5, 2, "", 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 1, 5);
+    test("abcdefghij", 5, 2, "abcde", 2, 5);
+    test("abcdefghij", 5, 2, "abcde", 4, 5);
+    test("abcdefghij", 5, 2, "abcde", 5, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 9, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 10, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 19, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 20, 5);
+    test("abcdefghij", 5, 4, "", 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 1, 5);
+    test("abcdefghij", 5, 4, "abcde", 2, 5);
+    test("abcdefghij", 5, 4, "abcde", 4, 5);
+    test("abcdefghij", 5, 4, "abcde", 5, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 9, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 10, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 19, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 20, 5);
+    test("abcdefghij", 5, 5, "", 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 1, 5);
+    test("abcdefghij", 5, 5, "abcde", 2, 5);
+    test("abcdefghij", 5, 5, "abcde", 4, 5);
+    test("abcdefghij", 5, 5, "abcde", 5, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 9, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 10, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 19, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 20, 5);
+    test("abcdefghij", 5, 6, "", 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 1, 5);
+    test("abcdefghij", 5, 6, "abcde", 2, 5);
+    test("abcdefghij", 5, 6, "abcde", 4, 5);
+    test("abcdefghij", 5, 6, "abcde", 5, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 9, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 10, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 5);
+}
+
+
+void test7()
+{
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 19, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 20, 5);
+    test("abcdefghij", 9, 0, "", 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 1, -1);
+    test("abcdefghij", 9, 0, "abcde", 2, -2);
+    test("abcdefghij", 9, 0, "abcde", 4, -4);
+    test("abcdefghij", 9, 0, "abcde", 5, -5);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, -5);
+    test("abcdefghij", 9, 0, "abcdefghij", 9, -9);
+    test("abcdefghij", 9, 0, "abcdefghij", 10, -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghij", 9, 1, "", 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 1, 9);
+    test("abcdefghij", 9, 1, "abcde", 2, 9);
+    test("abcdefghij", 9, 1, "abcde", 4, 9);
+    test("abcdefghij", 9, 1, "abcde", 5, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 9, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 10, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 19, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 20, 9);
+    test("abcdefghij", 9, 2, "", 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 1, 9);
+    test("abcdefghij", 9, 2, "abcde", 2, 9);
+    test("abcdefghij", 9, 2, "abcde", 4, 9);
+    test("abcdefghij", 9, 2, "abcde", 5, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 9, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 10, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 19, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 20, 9);
+    test("abcdefghij", 10, 0, "", 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 1, -1);
+    test("abcdefghij", 10, 0, "abcde", 2, -2);
+    test("abcdefghij", 10, 0, "abcde", 4, -4);
+    test("abcdefghij", 10, 0, "abcde", 5, -5);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, -5);
+    test("abcdefghij", 10, 0, "abcdefghij", 9, -9);
+    test("abcdefghij", 10, 0, "abcdefghij", 10, -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghij", 10, 1, "", 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 1, -1);
+    test("abcdefghij", 10, 1, "abcde", 2, -2);
+    test("abcdefghij", 10, 1, "abcde", 4, -4);
+    test("abcdefghij", 10, 1, "abcde", 5, -5);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, -5);
+    test("abcdefghij", 10, 1, "abcdefghij", 9, -9);
+    test("abcdefghij", 10, 1, "abcdefghij", 10, -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghij", 11, 0, "", 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 0);
+    test("abcdefghij", 11, 0, "abcde", 2, 0);
+    test("abcdefghij", 11, 0, "abcde", 4, 0);
+    test("abcdefghij", 11, 0, "abcde", 5, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 9, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 10, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 19, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 20, 0);
+}
+
+void test8()
+{
+    test("abcdefghijklmnopqrst", 0, 0, "", 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, -2);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 4, -4);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 5, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 9, -9);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 10, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghijklmnopqrst", 0, 1, "", 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 4, -3);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 5, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 9, -8);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 10, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 19, -18);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 20, -19);
+    test("abcdefghijklmnopqrst", 0, 10, "", 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 8);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 4, 6);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 5, 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 9, 1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 10, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 19, -9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 20, -10);
+    test("abcdefghijklmnopqrst", 0, 19, "", 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 18);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 17);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 4, 15);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 5, 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 18);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9, 10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 10, 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 18);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 19, 0);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 20, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 18);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 4, 16);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 5, 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 9, 11);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 20, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 18);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 4, 16);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 5, 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 9, 11);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 20, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "", 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, -2);
+}
+
+
+void test9()
+{
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 4, -4);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 5, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 9, -9);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 10, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghijklmnopqrst", 1, 1, "", 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 4, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 9, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "", 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 4, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 9, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "", 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 4, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 9, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 4, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 9, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 4, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 9, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 19, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 20, 1);
+    test("abcdefghijklmnopqrst", 10, 0, "", 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, -2);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 4, -4);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 5, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, -1);
+}
+
+
+void test10()
+{
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 9, -9);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 10, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghijklmnopqrst", 10, 1, "", 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 4, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 9, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 19, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 20, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "", 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 4, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 9, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 19, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 20, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "", 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 4, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 9, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 19, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 20, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 4, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 9, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 19, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 20, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 4, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 9, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 19, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 20, 10);
+    test("abcdefghijklmnopqrst", 19, 0, "", 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, -2);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 4, -4);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 5, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 9, -9);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 10, -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 0);
+}
+
+
+void test11()
+{
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghijklmnopqrst", 19, 1, "", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 4, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 5, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 9, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 10, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 20, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 4, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 5, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 9, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 10, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 20, 19);
+    test("abcdefghijklmnopqrst", 20, 0, "", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, -2);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 4, -4);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 5, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 9, -9);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 10, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghijklmnopqrst", 20, 1, "", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, -2);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 4, -4);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 5, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 9, -9);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 10, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 19, -19);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 20, -20);
+    test("abcdefghijklmnopqrst", 21, 0, "", 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 4, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 9, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 10, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 19, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 20, 0);
+    }
+
+
+int main(int, char**) {
+    test0();
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+    test7();
+    test8();
+    test9();
+    test10();
+    test11();
+
+    {
+    test("", 0, 0, "abcde", 0, 0);
+    test("", 0, 0, "abcde", 1, -1);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 10, -10);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    test(L"", 0, 0, L"abcde", 0, 0);
+    test(L"", 0, 0, L"abcde", 1, -1);
+    test(L"abcdefghijklmnopqrst", 21, 0, L"abcde", 0, 0);
+    test(L"abcdefghijklmnopqrst", 21, 0, L"abcde", 1, 0);
+    test(L"abcdefghijklmnopqrst", 10, 0, L"abcdefghij", 10, -10);
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    test(U"", 0, 0, U"abcde", 0, 0);
+    test(U"", 0, 0, U"abcde", 1, -1);
+    test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 0, 0);
+    test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 1, 0);
+    test(U"abcdefghijklmnopqrst", 10, 0, U"abcdefghij", 10, -10);
+    }
+
+    {
+    test(U"", 0, 0, U"abcde", 0, 0);
+    test(U"", 0, 0, U"abcde", 1, -1);
+    test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 0, 0);
+    test(U"abcdefghijklmnopqrst", 21, 0, U"abcde", 1, 0);
+    test(U"abcdefghijklmnopqrst", 10, 0, U"abcdefghij", 10, -10);
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1;
+    constexpr SV  sv2 { "abcdefghijklmnopqrst", 21 };
+    static_assert ( sv1.compare(0, 0, "abcde", 0) == 0, "" );
+    static_assert ( sv1.compare(0, 0, "abcde", 1) < 0, "" );
+    static_assert ( sv2.compare(0, 0, "abcde", 1, 0) == 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv_size_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv_size_size.pass.cpp
new file mode 100644
index 0000000..a0f661c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.size_size_sv_size_size.pass.cpp
@@ -0,0 +1,5853 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr int compare(size_type pos1, size_type n1, basic_string_view str,
+//             size_type pos2, size_type n2) const;
+
+#include <string_view>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1, size_t pos1, size_t n1,
+             std::basic_string_view<CharT> sv2, size_t pos2, size_t n2,
+             int expected ) {
+#ifdef TEST_HAS_NO_EXCEPTIONS
+    if (pos1 <= sv1.size() && pos2 <= sv2.size())
+        assert (sign( sv1.compare(pos1, n1, sv2, pos2, n2)) == sign(expected));
+#else
+    try {
+        assert (sign( sv1.compare(pos1, n1, sv2, pos2, n2)) == sign(expected));
+        assert(pos1 <= sv1.size() && pos2 <= sv2.size());
+        }
+    catch (const std::out_of_range&) {
+        assert(pos1 > sv1.size() || pos2 > sv2.size());
+        }
+#endif
+}
+
+
+template<typename CharT>
+void test ( const CharT *s1, size_t pos1, size_t n1,
+            const CharT *s2, size_t pos2, size_t n2,
+            int expected ) {
+    typedef std::basic_string_view<CharT> string_view_t;
+
+    string_view_t sv1 ( s1 );
+    string_view_t sv2 ( s2 );
+    test1(sv1, pos1, n1, sv2, pos2, n2, expected);
+}
+
+void test0()
+{
+    test("", 0, 0, "", 0, 0, 0);
+    test("", 0, 0, "", 0, 1, 0);
+    test("", 0, 0, "", 1, 0, 0);
+    test("", 0, 0, "abcde", 0, 0, 0);
+    test("", 0, 0, "abcde", 0, 1, -1);
+    test("", 0, 0, "abcde", 0, 2, -2);
+    test("", 0, 0, "abcde", 0, 4, -4);
+    test("", 0, 0, "abcde", 0, 5, -5);
+    test("", 0, 0, "abcde", 0, 6, -5);
+    test("", 0, 0, "abcde", 1, 0, 0);
+    test("", 0, 0, "abcde", 1, 1, -1);
+    test("", 0, 0, "abcde", 1, 2, -2);
+    test("", 0, 0, "abcde", 1, 3, -3);
+    test("", 0, 0, "abcde", 1, 4, -4);
+    test("", 0, 0, "abcde", 1, 5, -4);
+    test("", 0, 0, "abcde", 2, 0, 0);
+    test("", 0, 0, "abcde", 2, 1, -1);
+    test("", 0, 0, "abcde", 2, 2, -2);
+    test("", 0, 0, "abcde", 2, 3, -3);
+    test("", 0, 0, "abcde", 2, 4, -3);
+    test("", 0, 0, "abcde", 4, 0, 0);
+    test("", 0, 0, "abcde", 4, 1, -1);
+    test("", 0, 0, "abcde", 4, 2, -1);
+    test("", 0, 0, "abcde", 5, 0, 0);
+    test("", 0, 0, "abcde", 5, 1, 0);
+    test("", 0, 0, "abcde", 6, 0, 0);
+    test("", 0, 0, "abcdefghij", 0, 0, 0);
+    test("", 0, 0, "abcdefghij", 0, 1, -1);
+    test("", 0, 0, "abcdefghij", 0, 5, -5);
+    test("", 0, 0, "abcdefghij", 0, 9, -9);
+    test("", 0, 0, "abcdefghij", 0, 10, -10);
+    test("", 0, 0, "abcdefghij", 0, 11, -10);
+    test("", 0, 0, "abcdefghij", 1, 0, 0);
+    test("", 0, 0, "abcdefghij", 1, 1, -1);
+    test("", 0, 0, "abcdefghij", 1, 4, -4);
+    test("", 0, 0, "abcdefghij", 1, 8, -8);
+    test("", 0, 0, "abcdefghij", 1, 9, -9);
+    test("", 0, 0, "abcdefghij", 1, 10, -9);
+    test("", 0, 0, "abcdefghij", 5, 0, 0);
+    test("", 0, 0, "abcdefghij", 5, 1, -1);
+    test("", 0, 0, "abcdefghij", 5, 2, -2);
+    test("", 0, 0, "abcdefghij", 5, 4, -4);
+    test("", 0, 0, "abcdefghij", 5, 5, -5);
+    test("", 0, 0, "abcdefghij", 5, 6, -5);
+    test("", 0, 0, "abcdefghij", 9, 0, 0);
+    test("", 0, 0, "abcdefghij", 9, 1, -1);
+    test("", 0, 0, "abcdefghij", 9, 2, -1);
+    test("", 0, 0, "abcdefghij", 10, 0, 0);
+    test("", 0, 0, "abcdefghij", 10, 1, 0);
+    test("", 0, 0, "abcdefghij", 11, 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("", 0, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("", 0, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("", 0, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("", 0, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("", 0, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("", 0, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("", 0, 1, "", 0, 0, 0);
+    test("", 0, 1, "", 0, 1, 0);
+    test("", 0, 1, "", 1, 0, 0);
+    test("", 0, 1, "abcde", 0, 0, 0);
+    test("", 0, 1, "abcde", 0, 1, -1);
+    test("", 0, 1, "abcde", 0, 2, -2);
+    test("", 0, 1, "abcde", 0, 4, -4);
+    test("", 0, 1, "abcde", 0, 5, -5);
+    test("", 0, 1, "abcde", 0, 6, -5);
+    test("", 0, 1, "abcde", 1, 0, 0);
+    test("", 0, 1, "abcde", 1, 1, -1);
+    test("", 0, 1, "abcde", 1, 2, -2);
+    test("", 0, 1, "abcde", 1, 3, -3);
+    test("", 0, 1, "abcde", 1, 4, -4);
+    test("", 0, 1, "abcde", 1, 5, -4);
+    test("", 0, 1, "abcde", 2, 0, 0);
+    test("", 0, 1, "abcde", 2, 1, -1);
+    test("", 0, 1, "abcde", 2, 2, -2);
+    test("", 0, 1, "abcde", 2, 3, -3);
+    test("", 0, 1, "abcde", 2, 4, -3);
+    test("", 0, 1, "abcde", 4, 0, 0);
+    test("", 0, 1, "abcde", 4, 1, -1);
+    test("", 0, 1, "abcde", 4, 2, -1);
+    test("", 0, 1, "abcde", 5, 0, 0);
+    test("", 0, 1, "abcde", 5, 1, 0);
+    test("", 0, 1, "abcde", 6, 0, 0);
+}
+
+void test1()
+{
+    test("", 0, 1, "abcdefghij", 0, 0, 0);
+    test("", 0, 1, "abcdefghij", 0, 1, -1);
+    test("", 0, 1, "abcdefghij", 0, 5, -5);
+    test("", 0, 1, "abcdefghij", 0, 9, -9);
+    test("", 0, 1, "abcdefghij", 0, 10, -10);
+    test("", 0, 1, "abcdefghij", 0, 11, -10);
+    test("", 0, 1, "abcdefghij", 1, 0, 0);
+    test("", 0, 1, "abcdefghij", 1, 1, -1);
+    test("", 0, 1, "abcdefghij", 1, 4, -4);
+    test("", 0, 1, "abcdefghij", 1, 8, -8);
+    test("", 0, 1, "abcdefghij", 1, 9, -9);
+    test("", 0, 1, "abcdefghij", 1, 10, -9);
+    test("", 0, 1, "abcdefghij", 5, 0, 0);
+    test("", 0, 1, "abcdefghij", 5, 1, -1);
+    test("", 0, 1, "abcdefghij", 5, 2, -2);
+    test("", 0, 1, "abcdefghij", 5, 4, -4);
+    test("", 0, 1, "abcdefghij", 5, 5, -5);
+    test("", 0, 1, "abcdefghij", 5, 6, -5);
+    test("", 0, 1, "abcdefghij", 9, 0, 0);
+    test("", 0, 1, "abcdefghij", 9, 1, -1);
+    test("", 0, 1, "abcdefghij", 9, 2, -1);
+    test("", 0, 1, "abcdefghij", 10, 0, 0);
+    test("", 0, 1, "abcdefghij", 10, 1, 0);
+    test("", 0, 1, "abcdefghij", 11, 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("", 0, 1, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("", 0, 1, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("", 0, 1, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("", 0, 1, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("", 0, 1, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("", 0, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("", 1, 0, "", 0, 0, 0);
+    test("", 1, 0, "", 0, 1, 0);
+    test("", 1, 0, "", 1, 0, 0);
+    test("", 1, 0, "abcde", 0, 0, 0);
+    test("", 1, 0, "abcde", 0, 1, 0);
+    test("", 1, 0, "abcde", 0, 2, 0);
+    test("", 1, 0, "abcde", 0, 4, 0);
+    test("", 1, 0, "abcde", 0, 5, 0);
+    test("", 1, 0, "abcde", 0, 6, 0);
+    test("", 1, 0, "abcde", 1, 0, 0);
+    test("", 1, 0, "abcde", 1, 1, 0);
+    test("", 1, 0, "abcde", 1, 2, 0);
+    test("", 1, 0, "abcde", 1, 3, 0);
+    test("", 1, 0, "abcde", 1, 4, 0);
+    test("", 1, 0, "abcde", 1, 5, 0);
+    test("", 1, 0, "abcde", 2, 0, 0);
+    test("", 1, 0, "abcde", 2, 1, 0);
+    test("", 1, 0, "abcde", 2, 2, 0);
+    test("", 1, 0, "abcde", 2, 3, 0);
+    test("", 1, 0, "abcde", 2, 4, 0);
+    test("", 1, 0, "abcde", 4, 0, 0);
+    test("", 1, 0, "abcde", 4, 1, 0);
+    test("", 1, 0, "abcde", 4, 2, 0);
+    test("", 1, 0, "abcde", 5, 0, 0);
+    test("", 1, 0, "abcde", 5, 1, 0);
+    test("", 1, 0, "abcde", 6, 0, 0);
+    test("", 1, 0, "abcdefghij", 0, 0, 0);
+    test("", 1, 0, "abcdefghij", 0, 1, 0);
+    test("", 1, 0, "abcdefghij", 0, 5, 0);
+    test("", 1, 0, "abcdefghij", 0, 9, 0);
+    test("", 1, 0, "abcdefghij", 0, 10, 0);
+    test("", 1, 0, "abcdefghij", 0, 11, 0);
+    test("", 1, 0, "abcdefghij", 1, 0, 0);
+    test("", 1, 0, "abcdefghij", 1, 1, 0);
+    test("", 1, 0, "abcdefghij", 1, 4, 0);
+    test("", 1, 0, "abcdefghij", 1, 8, 0);
+    test("", 1, 0, "abcdefghij", 1, 9, 0);
+    test("", 1, 0, "abcdefghij", 1, 10, 0);
+    test("", 1, 0, "abcdefghij", 5, 0, 0);
+    test("", 1, 0, "abcdefghij", 5, 1, 0);
+    test("", 1, 0, "abcdefghij", 5, 2, 0);
+    test("", 1, 0, "abcdefghij", 5, 4, 0);
+    test("", 1, 0, "abcdefghij", 5, 5, 0);
+    test("", 1, 0, "abcdefghij", 5, 6, 0);
+    test("", 1, 0, "abcdefghij", 9, 0, 0);
+    test("", 1, 0, "abcdefghij", 9, 1, 0);
+    test("", 1, 0, "abcdefghij", 9, 2, 0);
+    test("", 1, 0, "abcdefghij", 10, 0, 0);
+    test("", 1, 0, "abcdefghij", 10, 1, 0);
+    test("", 1, 0, "abcdefghij", 11, 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 1, 0);
+}
+
+void test2()
+{
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 19, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 20, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 0, 21, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 1, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 18, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 19, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 1, 20, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 1, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 5, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 9, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 10, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 10, 11, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 19, 1, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 19, 2, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("", 1, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 0, 0, "", 0, 0, 0);
+    test("abcde", 0, 0, "", 0, 1, 0);
+    test("abcde", 0, 0, "", 1, 0, 0);
+    test("abcde", 0, 0, "abcde", 0, 0, 0);
+    test("abcde", 0, 0, "abcde", 0, 1, -1);
+    test("abcde", 0, 0, "abcde", 0, 2, -2);
+    test("abcde", 0, 0, "abcde", 0, 4, -4);
+    test("abcde", 0, 0, "abcde", 0, 5, -5);
+    test("abcde", 0, 0, "abcde", 0, 6, -5);
+    test("abcde", 0, 0, "abcde", 1, 0, 0);
+    test("abcde", 0, 0, "abcde", 1, 1, -1);
+    test("abcde", 0, 0, "abcde", 1, 2, -2);
+    test("abcde", 0, 0, "abcde", 1, 3, -3);
+    test("abcde", 0, 0, "abcde", 1, 4, -4);
+    test("abcde", 0, 0, "abcde", 1, 5, -4);
+    test("abcde", 0, 0, "abcde", 2, 0, 0);
+    test("abcde", 0, 0, "abcde", 2, 1, -1);
+    test("abcde", 0, 0, "abcde", 2, 2, -2);
+    test("abcde", 0, 0, "abcde", 2, 3, -3);
+    test("abcde", 0, 0, "abcde", 2, 4, -3);
+    test("abcde", 0, 0, "abcde", 4, 0, 0);
+    test("abcde", 0, 0, "abcde", 4, 1, -1);
+    test("abcde", 0, 0, "abcde", 4, 2, -1);
+    test("abcde", 0, 0, "abcde", 5, 0, 0);
+    test("abcde", 0, 0, "abcde", 5, 1, 0);
+    test("abcde", 0, 0, "abcde", 6, 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 0, 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 0, 1, -1);
+    test("abcde", 0, 0, "abcdefghij", 0, 5, -5);
+    test("abcde", 0, 0, "abcdefghij", 0, 9, -9);
+    test("abcde", 0, 0, "abcdefghij", 0, 10, -10);
+    test("abcde", 0, 0, "abcdefghij", 0, 11, -10);
+    test("abcde", 0, 0, "abcdefghij", 1, 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 1, 1, -1);
+    test("abcde", 0, 0, "abcdefghij", 1, 4, -4);
+    test("abcde", 0, 0, "abcdefghij", 1, 8, -8);
+    test("abcde", 0, 0, "abcdefghij", 1, 9, -9);
+    test("abcde", 0, 0, "abcdefghij", 1, 10, -9);
+    test("abcde", 0, 0, "abcdefghij", 5, 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 5, 1, -1);
+    test("abcde", 0, 0, "abcdefghij", 5, 2, -2);
+    test("abcde", 0, 0, "abcdefghij", 5, 4, -4);
+    test("abcde", 0, 0, "abcdefghij", 5, 5, -5);
+    test("abcde", 0, 0, "abcdefghij", 5, 6, -5);
+    test("abcde", 0, 0, "abcdefghij", 9, 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 9, 1, -1);
+    test("abcde", 0, 0, "abcdefghij", 9, 2, -1);
+    test("abcde", 0, 0, "abcdefghij", 10, 0, 0);
+    test("abcde", 0, 0, "abcdefghij", 10, 1, 0);
+    test("abcde", 0, 0, "abcdefghij", 11, 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 0, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 0, 1, "", 0, 0, 1);
+    test("abcde", 0, 1, "", 0, 1, 1);
+    test("abcde", 0, 1, "", 1, 0, 0);
+    test("abcde", 0, 1, "abcde", 0, 0, 1);
+}
+
+void test3()
+{
+    test("abcde", 0, 1, "abcde", 0, 1, 0);
+    test("abcde", 0, 1, "abcde", 0, 2, -1);
+    test("abcde", 0, 1, "abcde", 0, 4, -3);
+    test("abcde", 0, 1, "abcde", 0, 5, -4);
+    test("abcde", 0, 1, "abcde", 0, 6, -4);
+    test("abcde", 0, 1, "abcde", 1, 0, 1);
+    test("abcde", 0, 1, "abcde", 1, 1, -1);
+    test("abcde", 0, 1, "abcde", 1, 2, -1);
+    test("abcde", 0, 1, "abcde", 1, 3, -1);
+    test("abcde", 0, 1, "abcde", 1, 4, -1);
+    test("abcde", 0, 1, "abcde", 1, 5, -1);
+    test("abcde", 0, 1, "abcde", 2, 0, 1);
+    test("abcde", 0, 1, "abcde", 2, 1, -2);
+    test("abcde", 0, 1, "abcde", 2, 2, -2);
+    test("abcde", 0, 1, "abcde", 2, 3, -2);
+    test("abcde", 0, 1, "abcde", 2, 4, -2);
+    test("abcde", 0, 1, "abcde", 4, 0, 1);
+    test("abcde", 0, 1, "abcde", 4, 1, -4);
+    test("abcde", 0, 1, "abcde", 4, 2, -4);
+    test("abcde", 0, 1, "abcde", 5, 0, 1);
+    test("abcde", 0, 1, "abcde", 5, 1, 1);
+    test("abcde", 0, 1, "abcde", 6, 0, 0);
+    test("abcde", 0, 1, "abcdefghij", 0, 0, 1);
+    test("abcde", 0, 1, "abcdefghij", 0, 1, 0);
+    test("abcde", 0, 1, "abcdefghij", 0, 5, -4);
+    test("abcde", 0, 1, "abcdefghij", 0, 9, -8);
+    test("abcde", 0, 1, "abcdefghij", 0, 10, -9);
+    test("abcde", 0, 1, "abcdefghij", 0, 11, -9);
+    test("abcde", 0, 1, "abcdefghij", 1, 0, 1);
+    test("abcde", 0, 1, "abcdefghij", 1, 1, -1);
+    test("abcde", 0, 1, "abcdefghij", 1, 4, -1);
+    test("abcde", 0, 1, "abcdefghij", 1, 8, -1);
+    test("abcde", 0, 1, "abcdefghij", 1, 9, -1);
+    test("abcde", 0, 1, "abcdefghij", 1, 10, -1);
+    test("abcde", 0, 1, "abcdefghij", 5, 0, 1);
+    test("abcde", 0, 1, "abcdefghij", 5, 1, -5);
+    test("abcde", 0, 1, "abcdefghij", 5, 2, -5);
+    test("abcde", 0, 1, "abcdefghij", 5, 4, -5);
+    test("abcde", 0, 1, "abcdefghij", 5, 5, -5);
+    test("abcde", 0, 1, "abcdefghij", 5, 6, -5);
+    test("abcde", 0, 1, "abcdefghij", 9, 0, 1);
+    test("abcde", 0, 1, "abcdefghij", 9, 1, -9);
+    test("abcde", 0, 1, "abcdefghij", 9, 2, -9);
+    test("abcde", 0, 1, "abcdefghij", 10, 0, 1);
+    test("abcde", 0, 1, "abcdefghij", 10, 1, 1);
+    test("abcde", 0, 1, "abcdefghij", 11, 0, 0);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 1, 0);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 10, -9);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 19, -18);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 20, -19);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 0, 21, -19);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcde", 0, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 0, 2, "", 0, 0, 2);
+    test("abcde", 0, 2, "", 0, 1, 2);
+    test("abcde", 0, 2, "", 1, 0, 0);
+    test("abcde", 0, 2, "abcde", 0, 0, 2);
+    test("abcde", 0, 2, "abcde", 0, 1, 1);
+    test("abcde", 0, 2, "abcde", 0, 2, 0);
+    test("abcde", 0, 2, "abcde", 0, 4, -2);
+    test("abcde", 0, 2, "abcde", 0, 5, -3);
+    test("abcde", 0, 2, "abcde", 0, 6, -3);
+    test("abcde", 0, 2, "abcde", 1, 0, 2);
+    test("abcde", 0, 2, "abcde", 1, 1, -1);
+    test("abcde", 0, 2, "abcde", 1, 2, -1);
+    test("abcde", 0, 2, "abcde", 1, 3, -1);
+    test("abcde", 0, 2, "abcde", 1, 4, -1);
+    test("abcde", 0, 2, "abcde", 1, 5, -1);
+    test("abcde", 0, 2, "abcde", 2, 0, 2);
+    test("abcde", 0, 2, "abcde", 2, 1, -2);
+    test("abcde", 0, 2, "abcde", 2, 2, -2);
+    test("abcde", 0, 2, "abcde", 2, 3, -2);
+    test("abcde", 0, 2, "abcde", 2, 4, -2);
+    test("abcde", 0, 2, "abcde", 4, 0, 2);
+    test("abcde", 0, 2, "abcde", 4, 1, -4);
+    test("abcde", 0, 2, "abcde", 4, 2, -4);
+    test("abcde", 0, 2, "abcde", 5, 0, 2);
+    test("abcde", 0, 2, "abcde", 5, 1, 2);
+    test("abcde", 0, 2, "abcde", 6, 0, 0);
+    test("abcde", 0, 2, "abcdefghij", 0, 0, 2);
+    test("abcde", 0, 2, "abcdefghij", 0, 1, 1);
+    test("abcde", 0, 2, "abcdefghij", 0, 5, -3);
+    test("abcde", 0, 2, "abcdefghij", 0, 9, -7);
+}
+
+void test4()
+{
+    test("abcde", 0, 2, "abcdefghij", 0, 10, -8);
+    test("abcde", 0, 2, "abcdefghij", 0, 11, -8);
+    test("abcde", 0, 2, "abcdefghij", 1, 0, 2);
+    test("abcde", 0, 2, "abcdefghij", 1, 1, -1);
+    test("abcde", 0, 2, "abcdefghij", 1, 4, -1);
+    test("abcde", 0, 2, "abcdefghij", 1, 8, -1);
+    test("abcde", 0, 2, "abcdefghij", 1, 9, -1);
+    test("abcde", 0, 2, "abcdefghij", 1, 10, -1);
+    test("abcde", 0, 2, "abcdefghij", 5, 0, 2);
+    test("abcde", 0, 2, "abcdefghij", 5, 1, -5);
+    test("abcde", 0, 2, "abcdefghij", 5, 2, -5);
+    test("abcde", 0, 2, "abcdefghij", 5, 4, -5);
+    test("abcde", 0, 2, "abcdefghij", 5, 5, -5);
+    test("abcde", 0, 2, "abcdefghij", 5, 6, -5);
+    test("abcde", 0, 2, "abcdefghij", 9, 0, 2);
+    test("abcde", 0, 2, "abcdefghij", 9, 1, -9);
+    test("abcde", 0, 2, "abcdefghij", 9, 2, -9);
+    test("abcde", 0, 2, "abcdefghij", 10, 0, 2);
+    test("abcde", 0, 2, "abcdefghij", 10, 1, 2);
+    test("abcde", 0, 2, "abcdefghij", 11, 0, 0);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 0, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 10, -8);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 19, -17);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 20, -18);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 0, 21, -18);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 0, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, 0, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 19, 0, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 20, 0, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 20, 1, 2);
+    test("abcde", 0, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 0, 4, "", 0, 0, 4);
+    test("abcde", 0, 4, "", 0, 1, 4);
+    test("abcde", 0, 4, "", 1, 0, 0);
+    test("abcde", 0, 4, "abcde", 0, 0, 4);
+    test("abcde", 0, 4, "abcde", 0, 1, 3);
+    test("abcde", 0, 4, "abcde", 0, 2, 2);
+    test("abcde", 0, 4, "abcde", 0, 4, 0);
+    test("abcde", 0, 4, "abcde", 0, 5, -1);
+    test("abcde", 0, 4, "abcde", 0, 6, -1);
+    test("abcde", 0, 4, "abcde", 1, 0, 4);
+    test("abcde", 0, 4, "abcde", 1, 1, -1);
+    test("abcde", 0, 4, "abcde", 1, 2, -1);
+    test("abcde", 0, 4, "abcde", 1, 3, -1);
+    test("abcde", 0, 4, "abcde", 1, 4, -1);
+    test("abcde", 0, 4, "abcde", 1, 5, -1);
+    test("abcde", 0, 4, "abcde", 2, 0, 4);
+    test("abcde", 0, 4, "abcde", 2, 1, -2);
+    test("abcde", 0, 4, "abcde", 2, 2, -2);
+    test("abcde", 0, 4, "abcde", 2, 3, -2);
+    test("abcde", 0, 4, "abcde", 2, 4, -2);
+    test("abcde", 0, 4, "abcde", 4, 0, 4);
+    test("abcde", 0, 4, "abcde", 4, 1, -4);
+    test("abcde", 0, 4, "abcde", 4, 2, -4);
+    test("abcde", 0, 4, "abcde", 5, 0, 4);
+    test("abcde", 0, 4, "abcde", 5, 1, 4);
+    test("abcde", 0, 4, "abcde", 6, 0, 0);
+    test("abcde", 0, 4, "abcdefghij", 0, 0, 4);
+    test("abcde", 0, 4, "abcdefghij", 0, 1, 3);
+    test("abcde", 0, 4, "abcdefghij", 0, 5, -1);
+    test("abcde", 0, 4, "abcdefghij", 0, 9, -5);
+    test("abcde", 0, 4, "abcdefghij", 0, 10, -6);
+    test("abcde", 0, 4, "abcdefghij", 0, 11, -6);
+    test("abcde", 0, 4, "abcdefghij", 1, 0, 4);
+    test("abcde", 0, 4, "abcdefghij", 1, 1, -1);
+    test("abcde", 0, 4, "abcdefghij", 1, 4, -1);
+    test("abcde", 0, 4, "abcdefghij", 1, 8, -1);
+    test("abcde", 0, 4, "abcdefghij", 1, 9, -1);
+    test("abcde", 0, 4, "abcdefghij", 1, 10, -1);
+    test("abcde", 0, 4, "abcdefghij", 5, 0, 4);
+    test("abcde", 0, 4, "abcdefghij", 5, 1, -5);
+    test("abcde", 0, 4, "abcdefghij", 5, 2, -5);
+    test("abcde", 0, 4, "abcdefghij", 5, 4, -5);
+    test("abcde", 0, 4, "abcdefghij", 5, 5, -5);
+    test("abcde", 0, 4, "abcdefghij", 5, 6, -5);
+    test("abcde", 0, 4, "abcdefghij", 9, 0, 4);
+    test("abcde", 0, 4, "abcdefghij", 9, 1, -9);
+    test("abcde", 0, 4, "abcdefghij", 9, 2, -9);
+    test("abcde", 0, 4, "abcdefghij", 10, 0, 4);
+    test("abcde", 0, 4, "abcdefghij", 10, 1, 4);
+    test("abcde", 0, 4, "abcdefghij", 11, 0, 0);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 0, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 1, 3);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 10, -6);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 19, -15);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 20, -16);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 0, 21, -16);
+}
+
+void test5()
+{
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 0, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, 0, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 19, 0, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 20, 0, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 20, 1, 4);
+    test("abcde", 0, 4, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 0, 5, "", 0, 0, 5);
+    test("abcde", 0, 5, "", 0, 1, 5);
+    test("abcde", 0, 5, "", 1, 0, 0);
+    test("abcde", 0, 5, "abcde", 0, 0, 5);
+    test("abcde", 0, 5, "abcde", 0, 1, 4);
+    test("abcde", 0, 5, "abcde", 0, 2, 3);
+    test("abcde", 0, 5, "abcde", 0, 4, 1);
+    test("abcde", 0, 5, "abcde", 0, 5, 0);
+    test("abcde", 0, 5, "abcde", 0, 6, 0);
+    test("abcde", 0, 5, "abcde", 1, 0, 5);
+    test("abcde", 0, 5, "abcde", 1, 1, -1);
+    test("abcde", 0, 5, "abcde", 1, 2, -1);
+    test("abcde", 0, 5, "abcde", 1, 3, -1);
+    test("abcde", 0, 5, "abcde", 1, 4, -1);
+    test("abcde", 0, 5, "abcde", 1, 5, -1);
+    test("abcde", 0, 5, "abcde", 2, 0, 5);
+    test("abcde", 0, 5, "abcde", 2, 1, -2);
+    test("abcde", 0, 5, "abcde", 2, 2, -2);
+    test("abcde", 0, 5, "abcde", 2, 3, -2);
+    test("abcde", 0, 5, "abcde", 2, 4, -2);
+    test("abcde", 0, 5, "abcde", 4, 0, 5);
+    test("abcde", 0, 5, "abcde", 4, 1, -4);
+    test("abcde", 0, 5, "abcde", 4, 2, -4);
+    test("abcde", 0, 5, "abcde", 5, 0, 5);
+    test("abcde", 0, 5, "abcde", 5, 1, 5);
+    test("abcde", 0, 5, "abcde", 6, 0, 0);
+    test("abcde", 0, 5, "abcdefghij", 0, 0, 5);
+    test("abcde", 0, 5, "abcdefghij", 0, 1, 4);
+    test("abcde", 0, 5, "abcdefghij", 0, 5, 0);
+    test("abcde", 0, 5, "abcdefghij", 0, 9, -4);
+    test("abcde", 0, 5, "abcdefghij", 0, 10, -5);
+    test("abcde", 0, 5, "abcdefghij", 0, 11, -5);
+    test("abcde", 0, 5, "abcdefghij", 1, 0, 5);
+    test("abcde", 0, 5, "abcdefghij", 1, 1, -1);
+    test("abcde", 0, 5, "abcdefghij", 1, 4, -1);
+    test("abcde", 0, 5, "abcdefghij", 1, 8, -1);
+    test("abcde", 0, 5, "abcdefghij", 1, 9, -1);
+    test("abcde", 0, 5, "abcdefghij", 1, 10, -1);
+    test("abcde", 0, 5, "abcdefghij", 5, 0, 5);
+    test("abcde", 0, 5, "abcdefghij", 5, 1, -5);
+    test("abcde", 0, 5, "abcdefghij", 5, 2, -5);
+    test("abcde", 0, 5, "abcdefghij", 5, 4, -5);
+    test("abcde", 0, 5, "abcdefghij", 5, 5, -5);
+    test("abcde", 0, 5, "abcdefghij", 5, 6, -5);
+    test("abcde", 0, 5, "abcdefghij", 9, 0, 5);
+    test("abcde", 0, 5, "abcdefghij", 9, 1, -9);
+    test("abcde", 0, 5, "abcdefghij", 9, 2, -9);
+    test("abcde", 0, 5, "abcdefghij", 10, 0, 5);
+    test("abcde", 0, 5, "abcdefghij", 10, 1, 5);
+    test("abcde", 0, 5, "abcdefghij", 11, 0, 0);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 0, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 1, 4);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 10, -5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 19, -14);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 20, -15);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 0, 21, -15);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 0, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, 0, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 19, 0, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 20, 0, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 20, 1, 5);
+    test("abcde", 0, 5, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 0, 6, "", 0, 0, 5);
+    test("abcde", 0, 6, "", 0, 1, 5);
+    test("abcde", 0, 6, "", 1, 0, 0);
+    test("abcde", 0, 6, "abcde", 0, 0, 5);
+    test("abcde", 0, 6, "abcde", 0, 1, 4);
+    test("abcde", 0, 6, "abcde", 0, 2, 3);
+    test("abcde", 0, 6, "abcde", 0, 4, 1);
+    test("abcde", 0, 6, "abcde", 0, 5, 0);
+}
+
+void test6()
+{
+    test("abcde", 0, 6, "abcde", 0, 6, 0);
+    test("abcde", 0, 6, "abcde", 1, 0, 5);
+    test("abcde", 0, 6, "abcde", 1, 1, -1);
+    test("abcde", 0, 6, "abcde", 1, 2, -1);
+    test("abcde", 0, 6, "abcde", 1, 3, -1);
+    test("abcde", 0, 6, "abcde", 1, 4, -1);
+    test("abcde", 0, 6, "abcde", 1, 5, -1);
+    test("abcde", 0, 6, "abcde", 2, 0, 5);
+    test("abcde", 0, 6, "abcde", 2, 1, -2);
+    test("abcde", 0, 6, "abcde", 2, 2, -2);
+    test("abcde", 0, 6, "abcde", 2, 3, -2);
+    test("abcde", 0, 6, "abcde", 2, 4, -2);
+    test("abcde", 0, 6, "abcde", 4, 0, 5);
+    test("abcde", 0, 6, "abcde", 4, 1, -4);
+    test("abcde", 0, 6, "abcde", 4, 2, -4);
+    test("abcde", 0, 6, "abcde", 5, 0, 5);
+    test("abcde", 0, 6, "abcde", 5, 1, 5);
+    test("abcde", 0, 6, "abcde", 6, 0, 0);
+    test("abcde", 0, 6, "abcdefghij", 0, 0, 5);
+    test("abcde", 0, 6, "abcdefghij", 0, 1, 4);
+    test("abcde", 0, 6, "abcdefghij", 0, 5, 0);
+    test("abcde", 0, 6, "abcdefghij", 0, 9, -4);
+    test("abcde", 0, 6, "abcdefghij", 0, 10, -5);
+    test("abcde", 0, 6, "abcdefghij", 0, 11, -5);
+    test("abcde", 0, 6, "abcdefghij", 1, 0, 5);
+    test("abcde", 0, 6, "abcdefghij", 1, 1, -1);
+    test("abcde", 0, 6, "abcdefghij", 1, 4, -1);
+    test("abcde", 0, 6, "abcdefghij", 1, 8, -1);
+    test("abcde", 0, 6, "abcdefghij", 1, 9, -1);
+    test("abcde", 0, 6, "abcdefghij", 1, 10, -1);
+    test("abcde", 0, 6, "abcdefghij", 5, 0, 5);
+    test("abcde", 0, 6, "abcdefghij", 5, 1, -5);
+    test("abcde", 0, 6, "abcdefghij", 5, 2, -5);
+    test("abcde", 0, 6, "abcdefghij", 5, 4, -5);
+    test("abcde", 0, 6, "abcdefghij", 5, 5, -5);
+    test("abcde", 0, 6, "abcdefghij", 5, 6, -5);
+    test("abcde", 0, 6, "abcdefghij", 9, 0, 5);
+    test("abcde", 0, 6, "abcdefghij", 9, 1, -9);
+    test("abcde", 0, 6, "abcdefghij", 9, 2, -9);
+    test("abcde", 0, 6, "abcdefghij", 10, 0, 5);
+    test("abcde", 0, 6, "abcdefghij", 10, 1, 5);
+    test("abcde", 0, 6, "abcdefghij", 11, 0, 0);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 0, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 1, 4);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 10, -5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 19, -14);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 20, -15);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 0, 21, -15);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 0, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, 0, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 19, 0, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 20, 0, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 20, 1, 5);
+    test("abcde", 0, 6, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 1, 0, "", 0, 0, 0);
+    test("abcde", 1, 0, "", 0, 1, 0);
+    test("abcde", 1, 0, "", 1, 0, 0);
+    test("abcde", 1, 0, "abcde", 0, 0, 0);
+    test("abcde", 1, 0, "abcde", 0, 1, -1);
+    test("abcde", 1, 0, "abcde", 0, 2, -2);
+    test("abcde", 1, 0, "abcde", 0, 4, -4);
+    test("abcde", 1, 0, "abcde", 0, 5, -5);
+    test("abcde", 1, 0, "abcde", 0, 6, -5);
+    test("abcde", 1, 0, "abcde", 1, 0, 0);
+    test("abcde", 1, 0, "abcde", 1, 1, -1);
+    test("abcde", 1, 0, "abcde", 1, 2, -2);
+    test("abcde", 1, 0, "abcde", 1, 3, -3);
+    test("abcde", 1, 0, "abcde", 1, 4, -4);
+    test("abcde", 1, 0, "abcde", 1, 5, -4);
+    test("abcde", 1, 0, "abcde", 2, 0, 0);
+    test("abcde", 1, 0, "abcde", 2, 1, -1);
+    test("abcde", 1, 0, "abcde", 2, 2, -2);
+    test("abcde", 1, 0, "abcde", 2, 3, -3);
+    test("abcde", 1, 0, "abcde", 2, 4, -3);
+    test("abcde", 1, 0, "abcde", 4, 0, 0);
+    test("abcde", 1, 0, "abcde", 4, 1, -1);
+    test("abcde", 1, 0, "abcde", 4, 2, -1);
+    test("abcde", 1, 0, "abcde", 5, 0, 0);
+    test("abcde", 1, 0, "abcde", 5, 1, 0);
+    test("abcde", 1, 0, "abcde", 6, 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 0, 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 0, 1, -1);
+    test("abcde", 1, 0, "abcdefghij", 0, 5, -5);
+    test("abcde", 1, 0, "abcdefghij", 0, 9, -9);
+    test("abcde", 1, 0, "abcdefghij", 0, 10, -10);
+    test("abcde", 1, 0, "abcdefghij", 0, 11, -10);
+    test("abcde", 1, 0, "abcdefghij", 1, 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 1, 1, -1);
+}
+
+void test7()
+{
+    test("abcde", 1, 0, "abcdefghij", 1, 4, -4);
+    test("abcde", 1, 0, "abcdefghij", 1, 8, -8);
+    test("abcde", 1, 0, "abcdefghij", 1, 9, -9);
+    test("abcde", 1, 0, "abcdefghij", 1, 10, -9);
+    test("abcde", 1, 0, "abcdefghij", 5, 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 5, 1, -1);
+    test("abcde", 1, 0, "abcdefghij", 5, 2, -2);
+    test("abcde", 1, 0, "abcdefghij", 5, 4, -4);
+    test("abcde", 1, 0, "abcdefghij", 5, 5, -5);
+    test("abcde", 1, 0, "abcdefghij", 5, 6, -5);
+    test("abcde", 1, 0, "abcdefghij", 9, 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 9, 1, -1);
+    test("abcde", 1, 0, "abcdefghij", 9, 2, -1);
+    test("abcde", 1, 0, "abcdefghij", 10, 0, 0);
+    test("abcde", 1, 0, "abcdefghij", 10, 1, 0);
+    test("abcde", 1, 0, "abcdefghij", 11, 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 1, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 1, 1, "", 0, 0, 1);
+    test("abcde", 1, 1, "", 0, 1, 1);
+    test("abcde", 1, 1, "", 1, 0, 0);
+    test("abcde", 1, 1, "abcde", 0, 0, 1);
+    test("abcde", 1, 1, "abcde", 0, 1, 1);
+    test("abcde", 1, 1, "abcde", 0, 2, 1);
+    test("abcde", 1, 1, "abcde", 0, 4, 1);
+    test("abcde", 1, 1, "abcde", 0, 5, 1);
+    test("abcde", 1, 1, "abcde", 0, 6, 1);
+    test("abcde", 1, 1, "abcde", 1, 0, 1);
+    test("abcde", 1, 1, "abcde", 1, 1, 0);
+    test("abcde", 1, 1, "abcde", 1, 2, -1);
+    test("abcde", 1, 1, "abcde", 1, 3, -2);
+    test("abcde", 1, 1, "abcde", 1, 4, -3);
+    test("abcde", 1, 1, "abcde", 1, 5, -3);
+    test("abcde", 1, 1, "abcde", 2, 0, 1);
+    test("abcde", 1, 1, "abcde", 2, 1, -1);
+    test("abcde", 1, 1, "abcde", 2, 2, -1);
+    test("abcde", 1, 1, "abcde", 2, 3, -1);
+    test("abcde", 1, 1, "abcde", 2, 4, -1);
+    test("abcde", 1, 1, "abcde", 4, 0, 1);
+    test("abcde", 1, 1, "abcde", 4, 1, -3);
+    test("abcde", 1, 1, "abcde", 4, 2, -3);
+    test("abcde", 1, 1, "abcde", 5, 0, 1);
+    test("abcde", 1, 1, "abcde", 5, 1, 1);
+    test("abcde", 1, 1, "abcde", 6, 0, 0);
+    test("abcde", 1, 1, "abcdefghij", 0, 0, 1);
+    test("abcde", 1, 1, "abcdefghij", 0, 1, 1);
+    test("abcde", 1, 1, "abcdefghij", 0, 5, 1);
+    test("abcde", 1, 1, "abcdefghij", 0, 9, 1);
+    test("abcde", 1, 1, "abcdefghij", 0, 10, 1);
+    test("abcde", 1, 1, "abcdefghij", 0, 11, 1);
+    test("abcde", 1, 1, "abcdefghij", 1, 0, 1);
+    test("abcde", 1, 1, "abcdefghij", 1, 1, 0);
+    test("abcde", 1, 1, "abcdefghij", 1, 4, -3);
+    test("abcde", 1, 1, "abcdefghij", 1, 8, -7);
+    test("abcde", 1, 1, "abcdefghij", 1, 9, -8);
+    test("abcde", 1, 1, "abcdefghij", 1, 10, -8);
+    test("abcde", 1, 1, "abcdefghij", 5, 0, 1);
+    test("abcde", 1, 1, "abcdefghij", 5, 1, -4);
+    test("abcde", 1, 1, "abcdefghij", 5, 2, -4);
+    test("abcde", 1, 1, "abcdefghij", 5, 4, -4);
+    test("abcde", 1, 1, "abcdefghij", 5, 5, -4);
+    test("abcde", 1, 1, "abcdefghij", 5, 6, -4);
+    test("abcde", 1, 1, "abcdefghij", 9, 0, 1);
+    test("abcde", 1, 1, "abcdefghij", 9, 1, -8);
+    test("abcde", 1, 1, "abcdefghij", 9, 2, -8);
+    test("abcde", 1, 1, "abcdefghij", 10, 0, 1);
+    test("abcde", 1, 1, "abcdefghij", 10, 1, 1);
+    test("abcde", 1, 1, "abcdefghij", 11, 0, 0);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 1, 0);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 9, -8);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 18, -17);
+}
+
+void test8()
+{
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 19, -18);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 1, 20, -18);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcde", 1, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 1, 2, "", 0, 0, 2);
+    test("abcde", 1, 2, "", 0, 1, 2);
+    test("abcde", 1, 2, "", 1, 0, 0);
+    test("abcde", 1, 2, "abcde", 0, 0, 2);
+    test("abcde", 1, 2, "abcde", 0, 1, 1);
+    test("abcde", 1, 2, "abcde", 0, 2, 1);
+    test("abcde", 1, 2, "abcde", 0, 4, 1);
+    test("abcde", 1, 2, "abcde", 0, 5, 1);
+    test("abcde", 1, 2, "abcde", 0, 6, 1);
+    test("abcde", 1, 2, "abcde", 1, 0, 2);
+    test("abcde", 1, 2, "abcde", 1, 1, 1);
+    test("abcde", 1, 2, "abcde", 1, 2, 0);
+    test("abcde", 1, 2, "abcde", 1, 3, -1);
+    test("abcde", 1, 2, "abcde", 1, 4, -2);
+    test("abcde", 1, 2, "abcde", 1, 5, -2);
+    test("abcde", 1, 2, "abcde", 2, 0, 2);
+    test("abcde", 1, 2, "abcde", 2, 1, -1);
+    test("abcde", 1, 2, "abcde", 2, 2, -1);
+    test("abcde", 1, 2, "abcde", 2, 3, -1);
+    test("abcde", 1, 2, "abcde", 2, 4, -1);
+    test("abcde", 1, 2, "abcde", 4, 0, 2);
+    test("abcde", 1, 2, "abcde", 4, 1, -3);
+    test("abcde", 1, 2, "abcde", 4, 2, -3);
+    test("abcde", 1, 2, "abcde", 5, 0, 2);
+    test("abcde", 1, 2, "abcde", 5, 1, 2);
+    test("abcde", 1, 2, "abcde", 6, 0, 0);
+    test("abcde", 1, 2, "abcdefghij", 0, 0, 2);
+    test("abcde", 1, 2, "abcdefghij", 0, 1, 1);
+    test("abcde", 1, 2, "abcdefghij", 0, 5, 1);
+    test("abcde", 1, 2, "abcdefghij", 0, 9, 1);
+    test("abcde", 1, 2, "abcdefghij", 0, 10, 1);
+    test("abcde", 1, 2, "abcdefghij", 0, 11, 1);
+    test("abcde", 1, 2, "abcdefghij", 1, 0, 2);
+    test("abcde", 1, 2, "abcdefghij", 1, 1, 1);
+    test("abcde", 1, 2, "abcdefghij", 1, 4, -2);
+    test("abcde", 1, 2, "abcdefghij", 1, 8, -6);
+    test("abcde", 1, 2, "abcdefghij", 1, 9, -7);
+    test("abcde", 1, 2, "abcdefghij", 1, 10, -7);
+    test("abcde", 1, 2, "abcdefghij", 5, 0, 2);
+    test("abcde", 1, 2, "abcdefghij", 5, 1, -4);
+    test("abcde", 1, 2, "abcdefghij", 5, 2, -4);
+    test("abcde", 1, 2, "abcdefghij", 5, 4, -4);
+    test("abcde", 1, 2, "abcdefghij", 5, 5, -4);
+    test("abcde", 1, 2, "abcdefghij", 5, 6, -4);
+    test("abcde", 1, 2, "abcdefghij", 9, 0, 2);
+    test("abcde", 1, 2, "abcdefghij", 9, 1, -8);
+    test("abcde", 1, 2, "abcdefghij", 9, 2, -8);
+    test("abcde", 1, 2, "abcdefghij", 10, 0, 2);
+    test("abcde", 1, 2, "abcdefghij", 10, 1, 2);
+    test("abcde", 1, 2, "abcdefghij", 11, 0, 0);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 0, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 0, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 1, 1);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 9, -7);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 18, -16);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 19, -17);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 1, 20, -17);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 0, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 19, 0, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 20, 0, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 20, 1, 2);
+    test("abcde", 1, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 1, 3, "", 0, 0, 3);
+    test("abcde", 1, 3, "", 0, 1, 3);
+    test("abcde", 1, 3, "", 1, 0, 0);
+    test("abcde", 1, 3, "abcde", 0, 0, 3);
+    test("abcde", 1, 3, "abcde", 0, 1, 1);
+    test("abcde", 1, 3, "abcde", 0, 2, 1);
+    test("abcde", 1, 3, "abcde", 0, 4, 1);
+    test("abcde", 1, 3, "abcde", 0, 5, 1);
+    test("abcde", 1, 3, "abcde", 0, 6, 1);
+    test("abcde", 1, 3, "abcde", 1, 0, 3);
+    test("abcde", 1, 3, "abcde", 1, 1, 2);
+    test("abcde", 1, 3, "abcde", 1, 2, 1);
+}
+
+void test9()
+{
+    test("abcde", 1, 3, "abcde", 1, 3, 0);
+    test("abcde", 1, 3, "abcde", 1, 4, -1);
+    test("abcde", 1, 3, "abcde", 1, 5, -1);
+    test("abcde", 1, 3, "abcde", 2, 0, 3);
+    test("abcde", 1, 3, "abcde", 2, 1, -1);
+    test("abcde", 1, 3, "abcde", 2, 2, -1);
+    test("abcde", 1, 3, "abcde", 2, 3, -1);
+    test("abcde", 1, 3, "abcde", 2, 4, -1);
+    test("abcde", 1, 3, "abcde", 4, 0, 3);
+    test("abcde", 1, 3, "abcde", 4, 1, -3);
+    test("abcde", 1, 3, "abcde", 4, 2, -3);
+    test("abcde", 1, 3, "abcde", 5, 0, 3);
+    test("abcde", 1, 3, "abcde", 5, 1, 3);
+    test("abcde", 1, 3, "abcde", 6, 0, 0);
+    test("abcde", 1, 3, "abcdefghij", 0, 0, 3);
+    test("abcde", 1, 3, "abcdefghij", 0, 1, 1);
+    test("abcde", 1, 3, "abcdefghij", 0, 5, 1);
+    test("abcde", 1, 3, "abcdefghij", 0, 9, 1);
+    test("abcde", 1, 3, "abcdefghij", 0, 10, 1);
+    test("abcde", 1, 3, "abcdefghij", 0, 11, 1);
+    test("abcde", 1, 3, "abcdefghij", 1, 0, 3);
+    test("abcde", 1, 3, "abcdefghij", 1, 1, 2);
+    test("abcde", 1, 3, "abcdefghij", 1, 4, -1);
+    test("abcde", 1, 3, "abcdefghij", 1, 8, -5);
+    test("abcde", 1, 3, "abcdefghij", 1, 9, -6);
+    test("abcde", 1, 3, "abcdefghij", 1, 10, -6);
+    test("abcde", 1, 3, "abcdefghij", 5, 0, 3);
+    test("abcde", 1, 3, "abcdefghij", 5, 1, -4);
+    test("abcde", 1, 3, "abcdefghij", 5, 2, -4);
+    test("abcde", 1, 3, "abcdefghij", 5, 4, -4);
+    test("abcde", 1, 3, "abcdefghij", 5, 5, -4);
+    test("abcde", 1, 3, "abcdefghij", 5, 6, -4);
+    test("abcde", 1, 3, "abcdefghij", 9, 0, 3);
+    test("abcde", 1, 3, "abcdefghij", 9, 1, -8);
+    test("abcde", 1, 3, "abcdefghij", 9, 2, -8);
+    test("abcde", 1, 3, "abcdefghij", 10, 0, 3);
+    test("abcde", 1, 3, "abcdefghij", 10, 1, 3);
+    test("abcde", 1, 3, "abcdefghij", 11, 0, 0);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 0, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 0, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 1, 2);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 9, -6);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 18, -15);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 19, -16);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 1, 20, -16);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 0, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 19, 0, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 20, 0, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 20, 1, 3);
+    test("abcde", 1, 3, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 1, 4, "", 0, 0, 4);
+    test("abcde", 1, 4, "", 0, 1, 4);
+    test("abcde", 1, 4, "", 1, 0, 0);
+    test("abcde", 1, 4, "abcde", 0, 0, 4);
+    test("abcde", 1, 4, "abcde", 0, 1, 1);
+    test("abcde", 1, 4, "abcde", 0, 2, 1);
+    test("abcde", 1, 4, "abcde", 0, 4, 1);
+    test("abcde", 1, 4, "abcde", 0, 5, 1);
+    test("abcde", 1, 4, "abcde", 0, 6, 1);
+    test("abcde", 1, 4, "abcde", 1, 0, 4);
+    test("abcde", 1, 4, "abcde", 1, 1, 3);
+    test("abcde", 1, 4, "abcde", 1, 2, 2);
+    test("abcde", 1, 4, "abcde", 1, 3, 1);
+    test("abcde", 1, 4, "abcde", 1, 4, 0);
+    test("abcde", 1, 4, "abcde", 1, 5, 0);
+    test("abcde", 1, 4, "abcde", 2, 0, 4);
+    test("abcde", 1, 4, "abcde", 2, 1, -1);
+    test("abcde", 1, 4, "abcde", 2, 2, -1);
+    test("abcde", 1, 4, "abcde", 2, 3, -1);
+    test("abcde", 1, 4, "abcde", 2, 4, -1);
+    test("abcde", 1, 4, "abcde", 4, 0, 4);
+    test("abcde", 1, 4, "abcde", 4, 1, -3);
+    test("abcde", 1, 4, "abcde", 4, 2, -3);
+    test("abcde", 1, 4, "abcde", 5, 0, 4);
+    test("abcde", 1, 4, "abcde", 5, 1, 4);
+    test("abcde", 1, 4, "abcde", 6, 0, 0);
+    test("abcde", 1, 4, "abcdefghij", 0, 0, 4);
+    test("abcde", 1, 4, "abcdefghij", 0, 1, 1);
+    test("abcde", 1, 4, "abcdefghij", 0, 5, 1);
+    test("abcde", 1, 4, "abcdefghij", 0, 9, 1);
+    test("abcde", 1, 4, "abcdefghij", 0, 10, 1);
+    test("abcde", 1, 4, "abcdefghij", 0, 11, 1);
+    test("abcde", 1, 4, "abcdefghij", 1, 0, 4);
+    test("abcde", 1, 4, "abcdefghij", 1, 1, 3);
+    test("abcde", 1, 4, "abcdefghij", 1, 4, 0);
+    test("abcde", 1, 4, "abcdefghij", 1, 8, -4);
+    test("abcde", 1, 4, "abcdefghij", 1, 9, -5);
+    test("abcde", 1, 4, "abcdefghij", 1, 10, -5);
+}
+
+void test10()
+{
+    test("abcde", 1, 4, "abcdefghij", 5, 0, 4);
+    test("abcde", 1, 4, "abcdefghij", 5, 1, -4);
+    test("abcde", 1, 4, "abcdefghij", 5, 2, -4);
+    test("abcde", 1, 4, "abcdefghij", 5, 4, -4);
+    test("abcde", 1, 4, "abcdefghij", 5, 5, -4);
+    test("abcde", 1, 4, "abcdefghij", 5, 6, -4);
+    test("abcde", 1, 4, "abcdefghij", 9, 0, 4);
+    test("abcde", 1, 4, "abcdefghij", 9, 1, -8);
+    test("abcde", 1, 4, "abcdefghij", 9, 2, -8);
+    test("abcde", 1, 4, "abcdefghij", 10, 0, 4);
+    test("abcde", 1, 4, "abcdefghij", 10, 1, 4);
+    test("abcde", 1, 4, "abcdefghij", 11, 0, 0);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 0, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 0, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 1, 3);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 9, -5);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 18, -14);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 19, -15);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 1, 20, -15);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 0, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 19, 0, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 20, 0, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 20, 1, 4);
+    test("abcde", 1, 4, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 1, 5, "", 0, 0, 4);
+    test("abcde", 1, 5, "", 0, 1, 4);
+    test("abcde", 1, 5, "", 1, 0, 0);
+    test("abcde", 1, 5, "abcde", 0, 0, 4);
+    test("abcde", 1, 5, "abcde", 0, 1, 1);
+    test("abcde", 1, 5, "abcde", 0, 2, 1);
+    test("abcde", 1, 5, "abcde", 0, 4, 1);
+    test("abcde", 1, 5, "abcde", 0, 5, 1);
+    test("abcde", 1, 5, "abcde", 0, 6, 1);
+    test("abcde", 1, 5, "abcde", 1, 0, 4);
+    test("abcde", 1, 5, "abcde", 1, 1, 3);
+    test("abcde", 1, 5, "abcde", 1, 2, 2);
+    test("abcde", 1, 5, "abcde", 1, 3, 1);
+    test("abcde", 1, 5, "abcde", 1, 4, 0);
+    test("abcde", 1, 5, "abcde", 1, 5, 0);
+    test("abcde", 1, 5, "abcde", 2, 0, 4);
+    test("abcde", 1, 5, "abcde", 2, 1, -1);
+    test("abcde", 1, 5, "abcde", 2, 2, -1);
+    test("abcde", 1, 5, "abcde", 2, 3, -1);
+    test("abcde", 1, 5, "abcde", 2, 4, -1);
+    test("abcde", 1, 5, "abcde", 4, 0, 4);
+    test("abcde", 1, 5, "abcde", 4, 1, -3);
+    test("abcde", 1, 5, "abcde", 4, 2, -3);
+    test("abcde", 1, 5, "abcde", 5, 0, 4);
+    test("abcde", 1, 5, "abcde", 5, 1, 4);
+    test("abcde", 1, 5, "abcde", 6, 0, 0);
+    test("abcde", 1, 5, "abcdefghij", 0, 0, 4);
+    test("abcde", 1, 5, "abcdefghij", 0, 1, 1);
+    test("abcde", 1, 5, "abcdefghij", 0, 5, 1);
+    test("abcde", 1, 5, "abcdefghij", 0, 9, 1);
+    test("abcde", 1, 5, "abcdefghij", 0, 10, 1);
+    test("abcde", 1, 5, "abcdefghij", 0, 11, 1);
+    test("abcde", 1, 5, "abcdefghij", 1, 0, 4);
+    test("abcde", 1, 5, "abcdefghij", 1, 1, 3);
+    test("abcde", 1, 5, "abcdefghij", 1, 4, 0);
+    test("abcde", 1, 5, "abcdefghij", 1, 8, -4);
+    test("abcde", 1, 5, "abcdefghij", 1, 9, -5);
+    test("abcde", 1, 5, "abcdefghij", 1, 10, -5);
+    test("abcde", 1, 5, "abcdefghij", 5, 0, 4);
+    test("abcde", 1, 5, "abcdefghij", 5, 1, -4);
+    test("abcde", 1, 5, "abcdefghij", 5, 2, -4);
+    test("abcde", 1, 5, "abcdefghij", 5, 4, -4);
+    test("abcde", 1, 5, "abcdefghij", 5, 5, -4);
+    test("abcde", 1, 5, "abcdefghij", 5, 6, -4);
+    test("abcde", 1, 5, "abcdefghij", 9, 0, 4);
+    test("abcde", 1, 5, "abcdefghij", 9, 1, -8);
+    test("abcde", 1, 5, "abcdefghij", 9, 2, -8);
+    test("abcde", 1, 5, "abcdefghij", 10, 0, 4);
+    test("abcde", 1, 5, "abcdefghij", 10, 1, 4);
+    test("abcde", 1, 5, "abcdefghij", 11, 0, 0);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 0, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 0, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 1, 3);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 9, -5);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 18, -14);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 19, -15);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 1, 20, -15);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 0, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 1, -9);
+}
+
+void test11()
+{
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 19, 0, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 20, 0, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 20, 1, 4);
+    test("abcde", 1, 5, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 2, 0, "", 0, 0, 0);
+    test("abcde", 2, 0, "", 0, 1, 0);
+    test("abcde", 2, 0, "", 1, 0, 0);
+    test("abcde", 2, 0, "abcde", 0, 0, 0);
+    test("abcde", 2, 0, "abcde", 0, 1, -1);
+    test("abcde", 2, 0, "abcde", 0, 2, -2);
+    test("abcde", 2, 0, "abcde", 0, 4, -4);
+    test("abcde", 2, 0, "abcde", 0, 5, -5);
+    test("abcde", 2, 0, "abcde", 0, 6, -5);
+    test("abcde", 2, 0, "abcde", 1, 0, 0);
+    test("abcde", 2, 0, "abcde", 1, 1, -1);
+    test("abcde", 2, 0, "abcde", 1, 2, -2);
+    test("abcde", 2, 0, "abcde", 1, 3, -3);
+    test("abcde", 2, 0, "abcde", 1, 4, -4);
+    test("abcde", 2, 0, "abcde", 1, 5, -4);
+    test("abcde", 2, 0, "abcde", 2, 0, 0);
+    test("abcde", 2, 0, "abcde", 2, 1, -1);
+    test("abcde", 2, 0, "abcde", 2, 2, -2);
+    test("abcde", 2, 0, "abcde", 2, 3, -3);
+    test("abcde", 2, 0, "abcde", 2, 4, -3);
+    test("abcde", 2, 0, "abcde", 4, 0, 0);
+    test("abcde", 2, 0, "abcde", 4, 1, -1);
+    test("abcde", 2, 0, "abcde", 4, 2, -1);
+    test("abcde", 2, 0, "abcde", 5, 0, 0);
+    test("abcde", 2, 0, "abcde", 5, 1, 0);
+    test("abcde", 2, 0, "abcde", 6, 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 0, 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 0, 1, -1);
+    test("abcde", 2, 0, "abcdefghij", 0, 5, -5);
+    test("abcde", 2, 0, "abcdefghij", 0, 9, -9);
+    test("abcde", 2, 0, "abcdefghij", 0, 10, -10);
+    test("abcde", 2, 0, "abcdefghij", 0, 11, -10);
+    test("abcde", 2, 0, "abcdefghij", 1, 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 1, 1, -1);
+    test("abcde", 2, 0, "abcdefghij", 1, 4, -4);
+    test("abcde", 2, 0, "abcdefghij", 1, 8, -8);
+    test("abcde", 2, 0, "abcdefghij", 1, 9, -9);
+    test("abcde", 2, 0, "abcdefghij", 1, 10, -9);
+    test("abcde", 2, 0, "abcdefghij", 5, 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 5, 1, -1);
+    test("abcde", 2, 0, "abcdefghij", 5, 2, -2);
+    test("abcde", 2, 0, "abcdefghij", 5, 4, -4);
+    test("abcde", 2, 0, "abcdefghij", 5, 5, -5);
+    test("abcde", 2, 0, "abcdefghij", 5, 6, -5);
+    test("abcde", 2, 0, "abcdefghij", 9, 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 9, 1, -1);
+    test("abcde", 2, 0, "abcdefghij", 9, 2, -1);
+    test("abcde", 2, 0, "abcdefghij", 10, 0, 0);
+    test("abcde", 2, 0, "abcdefghij", 10, 1, 0);
+    test("abcde", 2, 0, "abcdefghij", 11, 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 2, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 2, 1, "", 0, 0, 1);
+    test("abcde", 2, 1, "", 0, 1, 1);
+    test("abcde", 2, 1, "", 1, 0, 0);
+    test("abcde", 2, 1, "abcde", 0, 0, 1);
+    test("abcde", 2, 1, "abcde", 0, 1, 2);
+    test("abcde", 2, 1, "abcde", 0, 2, 2);
+    test("abcde", 2, 1, "abcde", 0, 4, 2);
+    test("abcde", 2, 1, "abcde", 0, 5, 2);
+    test("abcde", 2, 1, "abcde", 0, 6, 2);
+    test("abcde", 2, 1, "abcde", 1, 0, 1);
+    test("abcde", 2, 1, "abcde", 1, 1, 1);
+    test("abcde", 2, 1, "abcde", 1, 2, 1);
+    test("abcde", 2, 1, "abcde", 1, 3, 1);
+    test("abcde", 2, 1, "abcde", 1, 4, 1);
+    test("abcde", 2, 1, "abcde", 1, 5, 1);
+    test("abcde", 2, 1, "abcde", 2, 0, 1);
+}
+
+void test12()
+{
+    test("abcde", 2, 1, "abcde", 2, 1, 0);
+    test("abcde", 2, 1, "abcde", 2, 2, -1);
+    test("abcde", 2, 1, "abcde", 2, 3, -2);
+    test("abcde", 2, 1, "abcde", 2, 4, -2);
+    test("abcde", 2, 1, "abcde", 4, 0, 1);
+    test("abcde", 2, 1, "abcde", 4, 1, -2);
+    test("abcde", 2, 1, "abcde", 4, 2, -2);
+    test("abcde", 2, 1, "abcde", 5, 0, 1);
+    test("abcde", 2, 1, "abcde", 5, 1, 1);
+    test("abcde", 2, 1, "abcde", 6, 0, 0);
+    test("abcde", 2, 1, "abcdefghij", 0, 0, 1);
+    test("abcde", 2, 1, "abcdefghij", 0, 1, 2);
+    test("abcde", 2, 1, "abcdefghij", 0, 5, 2);
+    test("abcde", 2, 1, "abcdefghij", 0, 9, 2);
+    test("abcde", 2, 1, "abcdefghij", 0, 10, 2);
+    test("abcde", 2, 1, "abcdefghij", 0, 11, 2);
+    test("abcde", 2, 1, "abcdefghij", 1, 0, 1);
+    test("abcde", 2, 1, "abcdefghij", 1, 1, 1);
+    test("abcde", 2, 1, "abcdefghij", 1, 4, 1);
+    test("abcde", 2, 1, "abcdefghij", 1, 8, 1);
+    test("abcde", 2, 1, "abcdefghij", 1, 9, 1);
+    test("abcde", 2, 1, "abcdefghij", 1, 10, 1);
+    test("abcde", 2, 1, "abcdefghij", 5, 0, 1);
+    test("abcde", 2, 1, "abcdefghij", 5, 1, -3);
+    test("abcde", 2, 1, "abcdefghij", 5, 2, -3);
+    test("abcde", 2, 1, "abcdefghij", 5, 4, -3);
+    test("abcde", 2, 1, "abcdefghij", 5, 5, -3);
+    test("abcde", 2, 1, "abcdefghij", 5, 6, -3);
+    test("abcde", 2, 1, "abcdefghij", 9, 0, 1);
+    test("abcde", 2, 1, "abcdefghij", 9, 1, -7);
+    test("abcde", 2, 1, "abcdefghij", 9, 2, -7);
+    test("abcde", 2, 1, "abcdefghij", 10, 0, 1);
+    test("abcde", 2, 1, "abcdefghij", 10, 1, 1);
+    test("abcde", 2, 1, "abcdefghij", 11, 0, 0);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 1, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 10, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 19, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 20, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 0, 21, 2);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 1, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 9, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 18, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 19, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 1, 20, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 1, -8);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 5, -8);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 9, -8);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 10, -8);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 10, 11, -8);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 19, 1, -17);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 19, 2, -17);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcde", 2, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 2, 2, "", 0, 0, 2);
+    test("abcde", 2, 2, "", 0, 1, 2);
+    test("abcde", 2, 2, "", 1, 0, 0);
+    test("abcde", 2, 2, "abcde", 0, 0, 2);
+    test("abcde", 2, 2, "abcde", 0, 1, 2);
+    test("abcde", 2, 2, "abcde", 0, 2, 2);
+    test("abcde", 2, 2, "abcde", 0, 4, 2);
+    test("abcde", 2, 2, "abcde", 0, 5, 2);
+    test("abcde", 2, 2, "abcde", 0, 6, 2);
+    test("abcde", 2, 2, "abcde", 1, 0, 2);
+    test("abcde", 2, 2, "abcde", 1, 1, 1);
+    test("abcde", 2, 2, "abcde", 1, 2, 1);
+    test("abcde", 2, 2, "abcde", 1, 3, 1);
+    test("abcde", 2, 2, "abcde", 1, 4, 1);
+    test("abcde", 2, 2, "abcde", 1, 5, 1);
+    test("abcde", 2, 2, "abcde", 2, 0, 2);
+    test("abcde", 2, 2, "abcde", 2, 1, 1);
+    test("abcde", 2, 2, "abcde", 2, 2, 0);
+    test("abcde", 2, 2, "abcde", 2, 3, -1);
+    test("abcde", 2, 2, "abcde", 2, 4, -1);
+    test("abcde", 2, 2, "abcde", 4, 0, 2);
+    test("abcde", 2, 2, "abcde", 4, 1, -2);
+    test("abcde", 2, 2, "abcde", 4, 2, -2);
+    test("abcde", 2, 2, "abcde", 5, 0, 2);
+    test("abcde", 2, 2, "abcde", 5, 1, 2);
+    test("abcde", 2, 2, "abcde", 6, 0, 0);
+    test("abcde", 2, 2, "abcdefghij", 0, 0, 2);
+    test("abcde", 2, 2, "abcdefghij", 0, 1, 2);
+    test("abcde", 2, 2, "abcdefghij", 0, 5, 2);
+    test("abcde", 2, 2, "abcdefghij", 0, 9, 2);
+    test("abcde", 2, 2, "abcdefghij", 0, 10, 2);
+    test("abcde", 2, 2, "abcdefghij", 0, 11, 2);
+    test("abcde", 2, 2, "abcdefghij", 1, 0, 2);
+    test("abcde", 2, 2, "abcdefghij", 1, 1, 1);
+    test("abcde", 2, 2, "abcdefghij", 1, 4, 1);
+    test("abcde", 2, 2, "abcdefghij", 1, 8, 1);
+    test("abcde", 2, 2, "abcdefghij", 1, 9, 1);
+    test("abcde", 2, 2, "abcdefghij", 1, 10, 1);
+    test("abcde", 2, 2, "abcdefghij", 5, 0, 2);
+    test("abcde", 2, 2, "abcdefghij", 5, 1, -3);
+    test("abcde", 2, 2, "abcdefghij", 5, 2, -3);
+    test("abcde", 2, 2, "abcdefghij", 5, 4, -3);
+}
+
+void test13()
+{
+    test("abcde", 2, 2, "abcdefghij", 5, 5, -3);
+    test("abcde", 2, 2, "abcdefghij", 5, 6, -3);
+    test("abcde", 2, 2, "abcdefghij", 9, 0, 2);
+    test("abcde", 2, 2, "abcdefghij", 9, 1, -7);
+    test("abcde", 2, 2, "abcdefghij", 9, 2, -7);
+    test("abcde", 2, 2, "abcdefghij", 10, 0, 2);
+    test("abcde", 2, 2, "abcdefghij", 10, 1, 2);
+    test("abcde", 2, 2, "abcdefghij", 11, 0, 0);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 0, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 1, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 10, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 19, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 20, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 0, 21, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 0, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 1, 1);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 9, 1);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 18, 1);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 19, 1);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 1, 20, 1);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 0, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 1, -8);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 5, -8);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 9, -8);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 10, -8);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 10, 11, -8);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 19, 0, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 19, 1, -17);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 19, 2, -17);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 20, 0, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 20, 1, 2);
+    test("abcde", 2, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 2, 3, "", 0, 0, 3);
+    test("abcde", 2, 3, "", 0, 1, 3);
+    test("abcde", 2, 3, "", 1, 0, 0);
+    test("abcde", 2, 3, "abcde", 0, 0, 3);
+    test("abcde", 2, 3, "abcde", 0, 1, 2);
+    test("abcde", 2, 3, "abcde", 0, 2, 2);
+    test("abcde", 2, 3, "abcde", 0, 4, 2);
+    test("abcde", 2, 3, "abcde", 0, 5, 2);
+    test("abcde", 2, 3, "abcde", 0, 6, 2);
+    test("abcde", 2, 3, "abcde", 1, 0, 3);
+    test("abcde", 2, 3, "abcde", 1, 1, 1);
+    test("abcde", 2, 3, "abcde", 1, 2, 1);
+    test("abcde", 2, 3, "abcde", 1, 3, 1);
+    test("abcde", 2, 3, "abcde", 1, 4, 1);
+    test("abcde", 2, 3, "abcde", 1, 5, 1);
+    test("abcde", 2, 3, "abcde", 2, 0, 3);
+    test("abcde", 2, 3, "abcde", 2, 1, 2);
+    test("abcde", 2, 3, "abcde", 2, 2, 1);
+    test("abcde", 2, 3, "abcde", 2, 3, 0);
+    test("abcde", 2, 3, "abcde", 2, 4, 0);
+    test("abcde", 2, 3, "abcde", 4, 0, 3);
+    test("abcde", 2, 3, "abcde", 4, 1, -2);
+    test("abcde", 2, 3, "abcde", 4, 2, -2);
+    test("abcde", 2, 3, "abcde", 5, 0, 3);
+    test("abcde", 2, 3, "abcde", 5, 1, 3);
+    test("abcde", 2, 3, "abcde", 6, 0, 0);
+    test("abcde", 2, 3, "abcdefghij", 0, 0, 3);
+    test("abcde", 2, 3, "abcdefghij", 0, 1, 2);
+    test("abcde", 2, 3, "abcdefghij", 0, 5, 2);
+    test("abcde", 2, 3, "abcdefghij", 0, 9, 2);
+    test("abcde", 2, 3, "abcdefghij", 0, 10, 2);
+    test("abcde", 2, 3, "abcdefghij", 0, 11, 2);
+    test("abcde", 2, 3, "abcdefghij", 1, 0, 3);
+    test("abcde", 2, 3, "abcdefghij", 1, 1, 1);
+    test("abcde", 2, 3, "abcdefghij", 1, 4, 1);
+    test("abcde", 2, 3, "abcdefghij", 1, 8, 1);
+    test("abcde", 2, 3, "abcdefghij", 1, 9, 1);
+    test("abcde", 2, 3, "abcdefghij", 1, 10, 1);
+    test("abcde", 2, 3, "abcdefghij", 5, 0, 3);
+    test("abcde", 2, 3, "abcdefghij", 5, 1, -3);
+    test("abcde", 2, 3, "abcdefghij", 5, 2, -3);
+    test("abcde", 2, 3, "abcdefghij", 5, 4, -3);
+    test("abcde", 2, 3, "abcdefghij", 5, 5, -3);
+    test("abcde", 2, 3, "abcdefghij", 5, 6, -3);
+    test("abcde", 2, 3, "abcdefghij", 9, 0, 3);
+    test("abcde", 2, 3, "abcdefghij", 9, 1, -7);
+    test("abcde", 2, 3, "abcdefghij", 9, 2, -7);
+    test("abcde", 2, 3, "abcdefghij", 10, 0, 3);
+    test("abcde", 2, 3, "abcdefghij", 10, 1, 3);
+    test("abcde", 2, 3, "abcdefghij", 11, 0, 0);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 0, 3);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 1, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 10, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 19, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 20, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 0, 21, 2);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 0, 3);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 1, 1);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 9, 1);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 18, 1);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 19, 1);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 1, 20, 1);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 0, 3);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 1, -8);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 5, -8);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 9, -8);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 10, -8);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 10, 11, -8);
+}
+
+void test14()
+{
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 19, 0, 3);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 19, 1, -17);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 19, 2, -17);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 20, 0, 3);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 20, 1, 3);
+    test("abcde", 2, 3, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 2, 4, "", 0, 0, 3);
+    test("abcde", 2, 4, "", 0, 1, 3);
+    test("abcde", 2, 4, "", 1, 0, 0);
+    test("abcde", 2, 4, "abcde", 0, 0, 3);
+    test("abcde", 2, 4, "abcde", 0, 1, 2);
+    test("abcde", 2, 4, "abcde", 0, 2, 2);
+    test("abcde", 2, 4, "abcde", 0, 4, 2);
+    test("abcde", 2, 4, "abcde", 0, 5, 2);
+    test("abcde", 2, 4, "abcde", 0, 6, 2);
+    test("abcde", 2, 4, "abcde", 1, 0, 3);
+    test("abcde", 2, 4, "abcde", 1, 1, 1);
+    test("abcde", 2, 4, "abcde", 1, 2, 1);
+    test("abcde", 2, 4, "abcde", 1, 3, 1);
+    test("abcde", 2, 4, "abcde", 1, 4, 1);
+    test("abcde", 2, 4, "abcde", 1, 5, 1);
+    test("abcde", 2, 4, "abcde", 2, 0, 3);
+    test("abcde", 2, 4, "abcde", 2, 1, 2);
+    test("abcde", 2, 4, "abcde", 2, 2, 1);
+    test("abcde", 2, 4, "abcde", 2, 3, 0);
+    test("abcde", 2, 4, "abcde", 2, 4, 0);
+    test("abcde", 2, 4, "abcde", 4, 0, 3);
+    test("abcde", 2, 4, "abcde", 4, 1, -2);
+    test("abcde", 2, 4, "abcde", 4, 2, -2);
+    test("abcde", 2, 4, "abcde", 5, 0, 3);
+    test("abcde", 2, 4, "abcde", 5, 1, 3);
+    test("abcde", 2, 4, "abcde", 6, 0, 0);
+    test("abcde", 2, 4, "abcdefghij", 0, 0, 3);
+    test("abcde", 2, 4, "abcdefghij", 0, 1, 2);
+    test("abcde", 2, 4, "abcdefghij", 0, 5, 2);
+    test("abcde", 2, 4, "abcdefghij", 0, 9, 2);
+    test("abcde", 2, 4, "abcdefghij", 0, 10, 2);
+    test("abcde", 2, 4, "abcdefghij", 0, 11, 2);
+    test("abcde", 2, 4, "abcdefghij", 1, 0, 3);
+    test("abcde", 2, 4, "abcdefghij", 1, 1, 1);
+    test("abcde", 2, 4, "abcdefghij", 1, 4, 1);
+    test("abcde", 2, 4, "abcdefghij", 1, 8, 1);
+    test("abcde", 2, 4, "abcdefghij", 1, 9, 1);
+    test("abcde", 2, 4, "abcdefghij", 1, 10, 1);
+    test("abcde", 2, 4, "abcdefghij", 5, 0, 3);
+    test("abcde", 2, 4, "abcdefghij", 5, 1, -3);
+    test("abcde", 2, 4, "abcdefghij", 5, 2, -3);
+    test("abcde", 2, 4, "abcdefghij", 5, 4, -3);
+    test("abcde", 2, 4, "abcdefghij", 5, 5, -3);
+    test("abcde", 2, 4, "abcdefghij", 5, 6, -3);
+    test("abcde", 2, 4, "abcdefghij", 9, 0, 3);
+    test("abcde", 2, 4, "abcdefghij", 9, 1, -7);
+    test("abcde", 2, 4, "abcdefghij", 9, 2, -7);
+    test("abcde", 2, 4, "abcdefghij", 10, 0, 3);
+    test("abcde", 2, 4, "abcdefghij", 10, 1, 3);
+    test("abcde", 2, 4, "abcdefghij", 11, 0, 0);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 0, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 1, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 10, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 19, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 20, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 0, 21, 2);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 0, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 1, 1);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 9, 1);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 18, 1);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 19, 1);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 1, 20, 1);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 0, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 1, -8);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 5, -8);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 9, -8);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 10, -8);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 10, 11, -8);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 19, 0, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 19, 1, -17);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 19, 2, -17);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 20, 0, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 20, 1, 3);
+    test("abcde", 2, 4, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 4, 0, "", 0, 0, 0);
+    test("abcde", 4, 0, "", 0, 1, 0);
+    test("abcde", 4, 0, "", 1, 0, 0);
+    test("abcde", 4, 0, "abcde", 0, 0, 0);
+    test("abcde", 4, 0, "abcde", 0, 1, -1);
+    test("abcde", 4, 0, "abcde", 0, 2, -2);
+    test("abcde", 4, 0, "abcde", 0, 4, -4);
+    test("abcde", 4, 0, "abcde", 0, 5, -5);
+    test("abcde", 4, 0, "abcde", 0, 6, -5);
+    test("abcde", 4, 0, "abcde", 1, 0, 0);
+    test("abcde", 4, 0, "abcde", 1, 1, -1);
+    test("abcde", 4, 0, "abcde", 1, 2, -2);
+    test("abcde", 4, 0, "abcde", 1, 3, -3);
+    test("abcde", 4, 0, "abcde", 1, 4, -4);
+    test("abcde", 4, 0, "abcde", 1, 5, -4);
+    test("abcde", 4, 0, "abcde", 2, 0, 0);
+    test("abcde", 4, 0, "abcde", 2, 1, -1);
+    test("abcde", 4, 0, "abcde", 2, 2, -2);
+    test("abcde", 4, 0, "abcde", 2, 3, -3);
+    test("abcde", 4, 0, "abcde", 2, 4, -3);
+}
+
+void test15()
+{
+    test("abcde", 4, 0, "abcde", 4, 0, 0);
+    test("abcde", 4, 0, "abcde", 4, 1, -1);
+    test("abcde", 4, 0, "abcde", 4, 2, -1);
+    test("abcde", 4, 0, "abcde", 5, 0, 0);
+    test("abcde", 4, 0, "abcde", 5, 1, 0);
+    test("abcde", 4, 0, "abcde", 6, 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 0, 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 0, 1, -1);
+    test("abcde", 4, 0, "abcdefghij", 0, 5, -5);
+    test("abcde", 4, 0, "abcdefghij", 0, 9, -9);
+    test("abcde", 4, 0, "abcdefghij", 0, 10, -10);
+    test("abcde", 4, 0, "abcdefghij", 0, 11, -10);
+    test("abcde", 4, 0, "abcdefghij", 1, 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 1, 1, -1);
+    test("abcde", 4, 0, "abcdefghij", 1, 4, -4);
+    test("abcde", 4, 0, "abcdefghij", 1, 8, -8);
+    test("abcde", 4, 0, "abcdefghij", 1, 9, -9);
+    test("abcde", 4, 0, "abcdefghij", 1, 10, -9);
+    test("abcde", 4, 0, "abcdefghij", 5, 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 5, 1, -1);
+    test("abcde", 4, 0, "abcdefghij", 5, 2, -2);
+    test("abcde", 4, 0, "abcdefghij", 5, 4, -4);
+    test("abcde", 4, 0, "abcdefghij", 5, 5, -5);
+    test("abcde", 4, 0, "abcdefghij", 5, 6, -5);
+    test("abcde", 4, 0, "abcdefghij", 9, 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 9, 1, -1);
+    test("abcde", 4, 0, "abcdefghij", 9, 2, -1);
+    test("abcde", 4, 0, "abcdefghij", 10, 0, 0);
+    test("abcde", 4, 0, "abcdefghij", 10, 1, 0);
+    test("abcde", 4, 0, "abcdefghij", 11, 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 4, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 4, 1, "", 0, 0, 1);
+    test("abcde", 4, 1, "", 0, 1, 1);
+    test("abcde", 4, 1, "", 1, 0, 0);
+    test("abcde", 4, 1, "abcde", 0, 0, 1);
+    test("abcde", 4, 1, "abcde", 0, 1, 4);
+    test("abcde", 4, 1, "abcde", 0, 2, 4);
+    test("abcde", 4, 1, "abcde", 0, 4, 4);
+    test("abcde", 4, 1, "abcde", 0, 5, 4);
+    test("abcde", 4, 1, "abcde", 0, 6, 4);
+    test("abcde", 4, 1, "abcde", 1, 0, 1);
+    test("abcde", 4, 1, "abcde", 1, 1, 3);
+    test("abcde", 4, 1, "abcde", 1, 2, 3);
+    test("abcde", 4, 1, "abcde", 1, 3, 3);
+    test("abcde", 4, 1, "abcde", 1, 4, 3);
+    test("abcde", 4, 1, "abcde", 1, 5, 3);
+    test("abcde", 4, 1, "abcde", 2, 0, 1);
+    test("abcde", 4, 1, "abcde", 2, 1, 2);
+    test("abcde", 4, 1, "abcde", 2, 2, 2);
+    test("abcde", 4, 1, "abcde", 2, 3, 2);
+    test("abcde", 4, 1, "abcde", 2, 4, 2);
+    test("abcde", 4, 1, "abcde", 4, 0, 1);
+    test("abcde", 4, 1, "abcde", 4, 1, 0);
+    test("abcde", 4, 1, "abcde", 4, 2, 0);
+    test("abcde", 4, 1, "abcde", 5, 0, 1);
+    test("abcde", 4, 1, "abcde", 5, 1, 1);
+    test("abcde", 4, 1, "abcde", 6, 0, 0);
+    test("abcde", 4, 1, "abcdefghij", 0, 0, 1);
+    test("abcde", 4, 1, "abcdefghij", 0, 1, 4);
+    test("abcde", 4, 1, "abcdefghij", 0, 5, 4);
+    test("abcde", 4, 1, "abcdefghij", 0, 9, 4);
+    test("abcde", 4, 1, "abcdefghij", 0, 10, 4);
+    test("abcde", 4, 1, "abcdefghij", 0, 11, 4);
+    test("abcde", 4, 1, "abcdefghij", 1, 0, 1);
+    test("abcde", 4, 1, "abcdefghij", 1, 1, 3);
+    test("abcde", 4, 1, "abcdefghij", 1, 4, 3);
+    test("abcde", 4, 1, "abcdefghij", 1, 8, 3);
+    test("abcde", 4, 1, "abcdefghij", 1, 9, 3);
+    test("abcde", 4, 1, "abcdefghij", 1, 10, 3);
+    test("abcde", 4, 1, "abcdefghij", 5, 0, 1);
+    test("abcde", 4, 1, "abcdefghij", 5, 1, -1);
+    test("abcde", 4, 1, "abcdefghij", 5, 2, -1);
+    test("abcde", 4, 1, "abcdefghij", 5, 4, -1);
+    test("abcde", 4, 1, "abcdefghij", 5, 5, -1);
+    test("abcde", 4, 1, "abcdefghij", 5, 6, -1);
+    test("abcde", 4, 1, "abcdefghij", 9, 0, 1);
+    test("abcde", 4, 1, "abcdefghij", 9, 1, -5);
+}
+
+void test16()
+{
+    test("abcde", 4, 1, "abcdefghij", 9, 2, -5);
+    test("abcde", 4, 1, "abcdefghij", 10, 0, 1);
+    test("abcde", 4, 1, "abcdefghij", 10, 1, 1);
+    test("abcde", 4, 1, "abcdefghij", 11, 0, 0);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 1, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 10, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 19, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 20, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 0, 21, 4);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 1, 3);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 9, 3);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 18, 3);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 19, 3);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 1, 20, 3);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 1, -6);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 5, -6);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 9, -6);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 10, -6);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 10, 11, -6);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 19, 1, -15);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 19, 2, -15);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcde", 4, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 4, 2, "", 0, 0, 1);
+    test("abcde", 4, 2, "", 0, 1, 1);
+    test("abcde", 4, 2, "", 1, 0, 0);
+    test("abcde", 4, 2, "abcde", 0, 0, 1);
+    test("abcde", 4, 2, "abcde", 0, 1, 4);
+    test("abcde", 4, 2, "abcde", 0, 2, 4);
+    test("abcde", 4, 2, "abcde", 0, 4, 4);
+    test("abcde", 4, 2, "abcde", 0, 5, 4);
+    test("abcde", 4, 2, "abcde", 0, 6, 4);
+    test("abcde", 4, 2, "abcde", 1, 0, 1);
+    test("abcde", 4, 2, "abcde", 1, 1, 3);
+    test("abcde", 4, 2, "abcde", 1, 2, 3);
+    test("abcde", 4, 2, "abcde", 1, 3, 3);
+    test("abcde", 4, 2, "abcde", 1, 4, 3);
+    test("abcde", 4, 2, "abcde", 1, 5, 3);
+    test("abcde", 4, 2, "abcde", 2, 0, 1);
+    test("abcde", 4, 2, "abcde", 2, 1, 2);
+    test("abcde", 4, 2, "abcde", 2, 2, 2);
+    test("abcde", 4, 2, "abcde", 2, 3, 2);
+    test("abcde", 4, 2, "abcde", 2, 4, 2);
+    test("abcde", 4, 2, "abcde", 4, 0, 1);
+    test("abcde", 4, 2, "abcde", 4, 1, 0);
+    test("abcde", 4, 2, "abcde", 4, 2, 0);
+    test("abcde", 4, 2, "abcde", 5, 0, 1);
+    test("abcde", 4, 2, "abcde", 5, 1, 1);
+    test("abcde", 4, 2, "abcde", 6, 0, 0);
+    test("abcde", 4, 2, "abcdefghij", 0, 0, 1);
+    test("abcde", 4, 2, "abcdefghij", 0, 1, 4);
+    test("abcde", 4, 2, "abcdefghij", 0, 5, 4);
+    test("abcde", 4, 2, "abcdefghij", 0, 9, 4);
+    test("abcde", 4, 2, "abcdefghij", 0, 10, 4);
+    test("abcde", 4, 2, "abcdefghij", 0, 11, 4);
+    test("abcde", 4, 2, "abcdefghij", 1, 0, 1);
+    test("abcde", 4, 2, "abcdefghij", 1, 1, 3);
+    test("abcde", 4, 2, "abcdefghij", 1, 4, 3);
+    test("abcde", 4, 2, "abcdefghij", 1, 8, 3);
+    test("abcde", 4, 2, "abcdefghij", 1, 9, 3);
+    test("abcde", 4, 2, "abcdefghij", 1, 10, 3);
+    test("abcde", 4, 2, "abcdefghij", 5, 0, 1);
+    test("abcde", 4, 2, "abcdefghij", 5, 1, -1);
+    test("abcde", 4, 2, "abcdefghij", 5, 2, -1);
+    test("abcde", 4, 2, "abcdefghij", 5, 4, -1);
+    test("abcde", 4, 2, "abcdefghij", 5, 5, -1);
+    test("abcde", 4, 2, "abcdefghij", 5, 6, -1);
+    test("abcde", 4, 2, "abcdefghij", 9, 0, 1);
+    test("abcde", 4, 2, "abcdefghij", 9, 1, -5);
+    test("abcde", 4, 2, "abcdefghij", 9, 2, -5);
+    test("abcde", 4, 2, "abcdefghij", 10, 0, 1);
+    test("abcde", 4, 2, "abcdefghij", 10, 1, 1);
+    test("abcde", 4, 2, "abcdefghij", 11, 0, 0);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 1, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 10, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 19, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 20, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 0, 21, 4);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 1, 3);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 9, 3);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 18, 3);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 19, 3);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 1, 20, 3);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 1, -6);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 5, -6);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 9, -6);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 10, -6);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 10, 11, -6);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 19, 1, -15);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 19, 2, -15);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 20, 0, 1);
+}
+
+void test17()
+{
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcde", 4, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 5, 0, "", 0, 0, 0);
+    test("abcde", 5, 0, "", 0, 1, 0);
+    test("abcde", 5, 0, "", 1, 0, 0);
+    test("abcde", 5, 0, "abcde", 0, 0, 0);
+    test("abcde", 5, 0, "abcde", 0, 1, -1);
+    test("abcde", 5, 0, "abcde", 0, 2, -2);
+    test("abcde", 5, 0, "abcde", 0, 4, -4);
+    test("abcde", 5, 0, "abcde", 0, 5, -5);
+    test("abcde", 5, 0, "abcde", 0, 6, -5);
+    test("abcde", 5, 0, "abcde", 1, 0, 0);
+    test("abcde", 5, 0, "abcde", 1, 1, -1);
+    test("abcde", 5, 0, "abcde", 1, 2, -2);
+    test("abcde", 5, 0, "abcde", 1, 3, -3);
+    test("abcde", 5, 0, "abcde", 1, 4, -4);
+    test("abcde", 5, 0, "abcde", 1, 5, -4);
+    test("abcde", 5, 0, "abcde", 2, 0, 0);
+    test("abcde", 5, 0, "abcde", 2, 1, -1);
+    test("abcde", 5, 0, "abcde", 2, 2, -2);
+    test("abcde", 5, 0, "abcde", 2, 3, -3);
+    test("abcde", 5, 0, "abcde", 2, 4, -3);
+    test("abcde", 5, 0, "abcde", 4, 0, 0);
+    test("abcde", 5, 0, "abcde", 4, 1, -1);
+    test("abcde", 5, 0, "abcde", 4, 2, -1);
+    test("abcde", 5, 0, "abcde", 5, 0, 0);
+    test("abcde", 5, 0, "abcde", 5, 1, 0);
+    test("abcde", 5, 0, "abcde", 6, 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 0, 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 0, 1, -1);
+    test("abcde", 5, 0, "abcdefghij", 0, 5, -5);
+    test("abcde", 5, 0, "abcdefghij", 0, 9, -9);
+    test("abcde", 5, 0, "abcdefghij", 0, 10, -10);
+    test("abcde", 5, 0, "abcdefghij", 0, 11, -10);
+    test("abcde", 5, 0, "abcdefghij", 1, 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 1, 1, -1);
+    test("abcde", 5, 0, "abcdefghij", 1, 4, -4);
+    test("abcde", 5, 0, "abcdefghij", 1, 8, -8);
+    test("abcde", 5, 0, "abcdefghij", 1, 9, -9);
+    test("abcde", 5, 0, "abcdefghij", 1, 10, -9);
+    test("abcde", 5, 0, "abcdefghij", 5, 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 5, 1, -1);
+    test("abcde", 5, 0, "abcdefghij", 5, 2, -2);
+    test("abcde", 5, 0, "abcdefghij", 5, 4, -4);
+    test("abcde", 5, 0, "abcdefghij", 5, 5, -5);
+    test("abcde", 5, 0, "abcdefghij", 5, 6, -5);
+    test("abcde", 5, 0, "abcdefghij", 9, 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 9, 1, -1);
+    test("abcde", 5, 0, "abcdefghij", 9, 2, -1);
+    test("abcde", 5, 0, "abcdefghij", 10, 0, 0);
+    test("abcde", 5, 0, "abcdefghij", 10, 1, 0);
+    test("abcde", 5, 0, "abcdefghij", 11, 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 5, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 5, 1, "", 0, 0, 0);
+    test("abcde", 5, 1, "", 0, 1, 0);
+    test("abcde", 5, 1, "", 1, 0, 0);
+    test("abcde", 5, 1, "abcde", 0, 0, 0);
+    test("abcde", 5, 1, "abcde", 0, 1, -1);
+    test("abcde", 5, 1, "abcde", 0, 2, -2);
+    test("abcde", 5, 1, "abcde", 0, 4, -4);
+    test("abcde", 5, 1, "abcde", 0, 5, -5);
+    test("abcde", 5, 1, "abcde", 0, 6, -5);
+    test("abcde", 5, 1, "abcde", 1, 0, 0);
+    test("abcde", 5, 1, "abcde", 1, 1, -1);
+    test("abcde", 5, 1, "abcde", 1, 2, -2);
+    test("abcde", 5, 1, "abcde", 1, 3, -3);
+    test("abcde", 5, 1, "abcde", 1, 4, -4);
+    test("abcde", 5, 1, "abcde", 1, 5, -4);
+    test("abcde", 5, 1, "abcde", 2, 0, 0);
+    test("abcde", 5, 1, "abcde", 2, 1, -1);
+    test("abcde", 5, 1, "abcde", 2, 2, -2);
+    test("abcde", 5, 1, "abcde", 2, 3, -3);
+    test("abcde", 5, 1, "abcde", 2, 4, -3);
+    test("abcde", 5, 1, "abcde", 4, 0, 0);
+    test("abcde", 5, 1, "abcde", 4, 1, -1);
+    test("abcde", 5, 1, "abcde", 4, 2, -1);
+    test("abcde", 5, 1, "abcde", 5, 0, 0);
+}
+
+void test18()
+{
+    test("abcde", 5, 1, "abcde", 5, 1, 0);
+    test("abcde", 5, 1, "abcde", 6, 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 0, 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 0, 1, -1);
+    test("abcde", 5, 1, "abcdefghij", 0, 5, -5);
+    test("abcde", 5, 1, "abcdefghij", 0, 9, -9);
+    test("abcde", 5, 1, "abcdefghij", 0, 10, -10);
+    test("abcde", 5, 1, "abcdefghij", 0, 11, -10);
+    test("abcde", 5, 1, "abcdefghij", 1, 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 1, 1, -1);
+    test("abcde", 5, 1, "abcdefghij", 1, 4, -4);
+    test("abcde", 5, 1, "abcdefghij", 1, 8, -8);
+    test("abcde", 5, 1, "abcdefghij", 1, 9, -9);
+    test("abcde", 5, 1, "abcdefghij", 1, 10, -9);
+    test("abcde", 5, 1, "abcdefghij", 5, 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 5, 1, -1);
+    test("abcde", 5, 1, "abcdefghij", 5, 2, -2);
+    test("abcde", 5, 1, "abcdefghij", 5, 4, -4);
+    test("abcde", 5, 1, "abcdefghij", 5, 5, -5);
+    test("abcde", 5, 1, "abcdefghij", 5, 6, -5);
+    test("abcde", 5, 1, "abcdefghij", 9, 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 9, 1, -1);
+    test("abcde", 5, 1, "abcdefghij", 9, 2, -1);
+    test("abcde", 5, 1, "abcdefghij", 10, 0, 0);
+    test("abcde", 5, 1, "abcdefghij", 10, 1, 0);
+    test("abcde", 5, 1, "abcdefghij", 11, 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 5, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcde", 6, 0, "", 0, 0, 0);
+    test("abcde", 6, 0, "", 0, 1, 0);
+    test("abcde", 6, 0, "", 1, 0, 0);
+    test("abcde", 6, 0, "abcde", 0, 0, 0);
+    test("abcde", 6, 0, "abcde", 0, 1, 0);
+    test("abcde", 6, 0, "abcde", 0, 2, 0);
+    test("abcde", 6, 0, "abcde", 0, 4, 0);
+    test("abcde", 6, 0, "abcde", 0, 5, 0);
+    test("abcde", 6, 0, "abcde", 0, 6, 0);
+    test("abcde", 6, 0, "abcde", 1, 0, 0);
+    test("abcde", 6, 0, "abcde", 1, 1, 0);
+    test("abcde", 6, 0, "abcde", 1, 2, 0);
+    test("abcde", 6, 0, "abcde", 1, 3, 0);
+    test("abcde", 6, 0, "abcde", 1, 4, 0);
+    test("abcde", 6, 0, "abcde", 1, 5, 0);
+    test("abcde", 6, 0, "abcde", 2, 0, 0);
+    test("abcde", 6, 0, "abcde", 2, 1, 0);
+    test("abcde", 6, 0, "abcde", 2, 2, 0);
+    test("abcde", 6, 0, "abcde", 2, 3, 0);
+    test("abcde", 6, 0, "abcde", 2, 4, 0);
+    test("abcde", 6, 0, "abcde", 4, 0, 0);
+    test("abcde", 6, 0, "abcde", 4, 1, 0);
+    test("abcde", 6, 0, "abcde", 4, 2, 0);
+    test("abcde", 6, 0, "abcde", 5, 0, 0);
+    test("abcde", 6, 0, "abcde", 5, 1, 0);
+    test("abcde", 6, 0, "abcde", 6, 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 1, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 5, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 9, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 10, 0);
+    test("abcde", 6, 0, "abcdefghij", 0, 11, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 1, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 4, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 8, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 9, 0);
+    test("abcde", 6, 0, "abcdefghij", 1, 10, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 1, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 2, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 4, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 5, 0);
+    test("abcde", 6, 0, "abcdefghij", 5, 6, 0);
+    test("abcde", 6, 0, "abcdefghij", 9, 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 9, 1, 0);
+    test("abcde", 6, 0, "abcdefghij", 9, 2, 0);
+    test("abcde", 6, 0, "abcdefghij", 10, 0, 0);
+    test("abcde", 6, 0, "abcdefghij", 10, 1, 0);
+    test("abcde", 6, 0, "abcdefghij", 11, 0, 0);
+}
+
+void test19()
+{
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 1, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 19, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 20, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 0, 21, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 1, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 18, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 19, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 1, 20, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 1, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 5, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 9, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 10, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 10, 11, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 19, 1, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 19, 2, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcde", 6, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 0, 0, "", 0, 0, 0);
+    test("abcdefghij", 0, 0, "", 0, 1, 0);
+    test("abcdefghij", 0, 0, "", 1, 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 0, 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 0, 1, -1);
+    test("abcdefghij", 0, 0, "abcde", 0, 2, -2);
+    test("abcdefghij", 0, 0, "abcde", 0, 4, -4);
+    test("abcdefghij", 0, 0, "abcde", 0, 5, -5);
+    test("abcdefghij", 0, 0, "abcde", 0, 6, -5);
+    test("abcdefghij", 0, 0, "abcde", 1, 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 1, 1, -1);
+    test("abcdefghij", 0, 0, "abcde", 1, 2, -2);
+    test("abcdefghij", 0, 0, "abcde", 1, 3, -3);
+    test("abcdefghij", 0, 0, "abcde", 1, 4, -4);
+    test("abcdefghij", 0, 0, "abcde", 1, 5, -4);
+    test("abcdefghij", 0, 0, "abcde", 2, 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 2, 1, -1);
+    test("abcdefghij", 0, 0, "abcde", 2, 2, -2);
+    test("abcdefghij", 0, 0, "abcde", 2, 3, -3);
+    test("abcdefghij", 0, 0, "abcde", 2, 4, -3);
+    test("abcdefghij", 0, 0, "abcde", 4, 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 4, 1, -1);
+    test("abcdefghij", 0, 0, "abcde", 4, 2, -1);
+    test("abcdefghij", 0, 0, "abcde", 5, 0, 0);
+    test("abcdefghij", 0, 0, "abcde", 5, 1, 0);
+    test("abcdefghij", 0, 0, "abcde", 6, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghij", 0, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghij", 0, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 0, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 0, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghij", 0, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 0, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 0, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 0, 1, "", 0, 0, 1);
+    test("abcdefghij", 0, 1, "", 0, 1, 1);
+}
+
+void test20()
+{
+    test("abcdefghij", 0, 1, "", 1, 0, 0);
+    test("abcdefghij", 0, 1, "abcde", 0, 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 0, 1, 0);
+    test("abcdefghij", 0, 1, "abcde", 0, 2, -1);
+    test("abcdefghij", 0, 1, "abcde", 0, 4, -3);
+    test("abcdefghij", 0, 1, "abcde", 0, 5, -4);
+    test("abcdefghij", 0, 1, "abcde", 0, 6, -4);
+    test("abcdefghij", 0, 1, "abcde", 1, 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 1, 1, -1);
+    test("abcdefghij", 0, 1, "abcde", 1, 2, -1);
+    test("abcdefghij", 0, 1, "abcde", 1, 3, -1);
+    test("abcdefghij", 0, 1, "abcde", 1, 4, -1);
+    test("abcdefghij", 0, 1, "abcde", 1, 5, -1);
+    test("abcdefghij", 0, 1, "abcde", 2, 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 2, 1, -2);
+    test("abcdefghij", 0, 1, "abcde", 2, 2, -2);
+    test("abcdefghij", 0, 1, "abcde", 2, 3, -2);
+    test("abcdefghij", 0, 1, "abcde", 2, 4, -2);
+    test("abcdefghij", 0, 1, "abcde", 4, 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 4, 1, -4);
+    test("abcdefghij", 0, 1, "abcde", 4, 2, -4);
+    test("abcdefghij", 0, 1, "abcde", 5, 0, 1);
+    test("abcdefghij", 0, 1, "abcde", 5, 1, 1);
+    test("abcdefghij", 0, 1, "abcde", 6, 0, 0);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 1, 0);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 5, -4);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 9, -8);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 10, -9);
+    test("abcdefghij", 0, 1, "abcdefghij", 0, 11, -9);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 4, -1);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 8, -1);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 9, -1);
+    test("abcdefghij", 0, 1, "abcdefghij", 1, 10, -1);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, 1, -5);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, 2, -5);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, 4, -5);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 0, 1, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 0, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 9, 1, -9);
+    test("abcdefghij", 0, 1, "abcdefghij", 9, 2, -9);
+    test("abcdefghij", 0, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghij", 0, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 1, 0);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 10, -9);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 19, -18);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 20, -19);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 0, 21, -19);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghij", 0, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 0, 5, "", 0, 0, 5);
+    test("abcdefghij", 0, 5, "", 0, 1, 5);
+    test("abcdefghij", 0, 5, "", 1, 0, 0);
+    test("abcdefghij", 0, 5, "abcde", 0, 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 0, 1, 4);
+    test("abcdefghij", 0, 5, "abcde", 0, 2, 3);
+    test("abcdefghij", 0, 5, "abcde", 0, 4, 1);
+    test("abcdefghij", 0, 5, "abcde", 0, 5, 0);
+    test("abcdefghij", 0, 5, "abcde", 0, 6, 0);
+    test("abcdefghij", 0, 5, "abcde", 1, 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 1, 1, -1);
+    test("abcdefghij", 0, 5, "abcde", 1, 2, -1);
+    test("abcdefghij", 0, 5, "abcde", 1, 3, -1);
+    test("abcdefghij", 0, 5, "abcde", 1, 4, -1);
+    test("abcdefghij", 0, 5, "abcde", 1, 5, -1);
+    test("abcdefghij", 0, 5, "abcde", 2, 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 2, 1, -2);
+    test("abcdefghij", 0, 5, "abcde", 2, 2, -2);
+    test("abcdefghij", 0, 5, "abcde", 2, 3, -2);
+    test("abcdefghij", 0, 5, "abcde", 2, 4, -2);
+    test("abcdefghij", 0, 5, "abcde", 4, 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 4, 1, -4);
+    test("abcdefghij", 0, 5, "abcde", 4, 2, -4);
+    test("abcdefghij", 0, 5, "abcde", 5, 0, 5);
+    test("abcdefghij", 0, 5, "abcde", 5, 1, 5);
+    test("abcdefghij", 0, 5, "abcde", 6, 0, 0);
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 1, 4);
+}
+
+void test21()
+{
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 5, 0);
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 9, -4);
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 10, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 0, 11, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 4, -1);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 8, -1);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 9, -1);
+    test("abcdefghij", 0, 5, "abcdefghij", 1, 10, -1);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 1, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 2, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 4, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 0, 5, "abcdefghij", 9, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 9, 1, -9);
+    test("abcdefghij", 0, 5, "abcdefghij", 9, 2, -9);
+    test("abcdefghij", 0, 5, "abcdefghij", 10, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 10, 1, 5);
+    test("abcdefghij", 0, 5, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 1, 4);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 10, -5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 19, -14);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 20, -15);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 0, 21, -15);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 19, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 20, 0, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 20, 1, 5);
+    test("abcdefghij", 0, 5, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 0, 9, "", 0, 0, 9);
+    test("abcdefghij", 0, 9, "", 0, 1, 9);
+    test("abcdefghij", 0, 9, "", 1, 0, 0);
+    test("abcdefghij", 0, 9, "abcde", 0, 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 0, 1, 8);
+    test("abcdefghij", 0, 9, "abcde", 0, 2, 7);
+    test("abcdefghij", 0, 9, "abcde", 0, 4, 5);
+    test("abcdefghij", 0, 9, "abcde", 0, 5, 4);
+    test("abcdefghij", 0, 9, "abcde", 0, 6, 4);
+    test("abcdefghij", 0, 9, "abcde", 1, 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 1, 1, -1);
+    test("abcdefghij", 0, 9, "abcde", 1, 2, -1);
+    test("abcdefghij", 0, 9, "abcde", 1, 3, -1);
+    test("abcdefghij", 0, 9, "abcde", 1, 4, -1);
+    test("abcdefghij", 0, 9, "abcde", 1, 5, -1);
+    test("abcdefghij", 0, 9, "abcde", 2, 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 2, 1, -2);
+    test("abcdefghij", 0, 9, "abcde", 2, 2, -2);
+    test("abcdefghij", 0, 9, "abcde", 2, 3, -2);
+    test("abcdefghij", 0, 9, "abcde", 2, 4, -2);
+    test("abcdefghij", 0, 9, "abcde", 4, 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 4, 1, -4);
+    test("abcdefghij", 0, 9, "abcde", 4, 2, -4);
+    test("abcdefghij", 0, 9, "abcde", 5, 0, 9);
+    test("abcdefghij", 0, 9, "abcde", 5, 1, 9);
+    test("abcdefghij", 0, 9, "abcde", 6, 0, 0);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 1, 8);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 5, 4);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 9, 0);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 10, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 0, 11, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 4, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 8, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 9, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 1, 10, -1);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 1, -5);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 2, -5);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 4, -5);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 0, 9, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 0, 9, "abcdefghij", 9, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 9, 1, -9);
+    test("abcdefghij", 0, 9, "abcdefghij", 9, 2, -9);
+    test("abcdefghij", 0, 9, "abcdefghij", 10, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 10, 1, 9);
+    test("abcdefghij", 0, 9, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 1, 8);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 10, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 19, -10);
+}
+
+void test22()
+{
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 20, -11);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 0, 21, -11);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 19, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 20, 0, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 20, 1, 9);
+    test("abcdefghij", 0, 9, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 0, 10, "", 0, 0, 10);
+    test("abcdefghij", 0, 10, "", 0, 1, 10);
+    test("abcdefghij", 0, 10, "", 1, 0, 0);
+    test("abcdefghij", 0, 10, "abcde", 0, 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 0, 1, 9);
+    test("abcdefghij", 0, 10, "abcde", 0, 2, 8);
+    test("abcdefghij", 0, 10, "abcde", 0, 4, 6);
+    test("abcdefghij", 0, 10, "abcde", 0, 5, 5);
+    test("abcdefghij", 0, 10, "abcde", 0, 6, 5);
+    test("abcdefghij", 0, 10, "abcde", 1, 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 1, 1, -1);
+    test("abcdefghij", 0, 10, "abcde", 1, 2, -1);
+    test("abcdefghij", 0, 10, "abcde", 1, 3, -1);
+    test("abcdefghij", 0, 10, "abcde", 1, 4, -1);
+    test("abcdefghij", 0, 10, "abcde", 1, 5, -1);
+    test("abcdefghij", 0, 10, "abcde", 2, 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 2, 1, -2);
+    test("abcdefghij", 0, 10, "abcde", 2, 2, -2);
+    test("abcdefghij", 0, 10, "abcde", 2, 3, -2);
+    test("abcdefghij", 0, 10, "abcde", 2, 4, -2);
+    test("abcdefghij", 0, 10, "abcde", 4, 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 4, 1, -4);
+    test("abcdefghij", 0, 10, "abcde", 4, 2, -4);
+    test("abcdefghij", 0, 10, "abcde", 5, 0, 10);
+    test("abcdefghij", 0, 10, "abcde", 5, 1, 10);
+    test("abcdefghij", 0, 10, "abcde", 6, 0, 0);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 1, 9);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 10, 0);
+    test("abcdefghij", 0, 10, "abcdefghij", 0, 11, 0);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 4, -1);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 8, -1);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 9, -1);
+    test("abcdefghij", 0, 10, "abcdefghij", 1, 10, -1);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 1, -5);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 2, -5);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 4, -5);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 0, 10, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 0, 10, "abcdefghij", 9, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 9, 1, -9);
+    test("abcdefghij", 0, 10, "abcdefghij", 9, 2, -9);
+    test("abcdefghij", 0, 10, "abcdefghij", 10, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 10, 1, 10);
+    test("abcdefghij", 0, 10, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 1, 9);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 19, -9);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 20, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 0, 21, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 19, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 20, 0, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 20, 1, 10);
+    test("abcdefghij", 0, 10, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 0, 11, "", 0, 0, 10);
+    test("abcdefghij", 0, 11, "", 0, 1, 10);
+    test("abcdefghij", 0, 11, "", 1, 0, 0);
+    test("abcdefghij", 0, 11, "abcde", 0, 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 0, 1, 9);
+    test("abcdefghij", 0, 11, "abcde", 0, 2, 8);
+}
+
+void test23()
+{
+    test("abcdefghij", 0, 11, "abcde", 0, 4, 6);
+    test("abcdefghij", 0, 11, "abcde", 0, 5, 5);
+    test("abcdefghij", 0, 11, "abcde", 0, 6, 5);
+    test("abcdefghij", 0, 11, "abcde", 1, 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 1, 1, -1);
+    test("abcdefghij", 0, 11, "abcde", 1, 2, -1);
+    test("abcdefghij", 0, 11, "abcde", 1, 3, -1);
+    test("abcdefghij", 0, 11, "abcde", 1, 4, -1);
+    test("abcdefghij", 0, 11, "abcde", 1, 5, -1);
+    test("abcdefghij", 0, 11, "abcde", 2, 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 2, 1, -2);
+    test("abcdefghij", 0, 11, "abcde", 2, 2, -2);
+    test("abcdefghij", 0, 11, "abcde", 2, 3, -2);
+    test("abcdefghij", 0, 11, "abcde", 2, 4, -2);
+    test("abcdefghij", 0, 11, "abcde", 4, 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 4, 1, -4);
+    test("abcdefghij", 0, 11, "abcde", 4, 2, -4);
+    test("abcdefghij", 0, 11, "abcde", 5, 0, 10);
+    test("abcdefghij", 0, 11, "abcde", 5, 1, 10);
+    test("abcdefghij", 0, 11, "abcde", 6, 0, 0);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 1, 9);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 10, 0);
+    test("abcdefghij", 0, 11, "abcdefghij", 0, 11, 0);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 4, -1);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 8, -1);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 9, -1);
+    test("abcdefghij", 0, 11, "abcdefghij", 1, 10, -1);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 1, -5);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 2, -5);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 4, -5);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 0, 11, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 0, 11, "abcdefghij", 9, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 9, 1, -9);
+    test("abcdefghij", 0, 11, "abcdefghij", 9, 2, -9);
+    test("abcdefghij", 0, 11, "abcdefghij", 10, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 10, 1, 10);
+    test("abcdefghij", 0, 11, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 1, 9);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 19, -9);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 20, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 0, 21, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 19, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 20, 0, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 20, 1, 10);
+    test("abcdefghij", 0, 11, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 1, 0, "", 0, 0, 0);
+    test("abcdefghij", 1, 0, "", 0, 1, 0);
+    test("abcdefghij", 1, 0, "", 1, 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 0, 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 0, 1, -1);
+    test("abcdefghij", 1, 0, "abcde", 0, 2, -2);
+    test("abcdefghij", 1, 0, "abcde", 0, 4, -4);
+    test("abcdefghij", 1, 0, "abcde", 0, 5, -5);
+    test("abcdefghij", 1, 0, "abcde", 0, 6, -5);
+    test("abcdefghij", 1, 0, "abcde", 1, 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 1, 1, -1);
+    test("abcdefghij", 1, 0, "abcde", 1, 2, -2);
+    test("abcdefghij", 1, 0, "abcde", 1, 3, -3);
+    test("abcdefghij", 1, 0, "abcde", 1, 4, -4);
+    test("abcdefghij", 1, 0, "abcde", 1, 5, -4);
+    test("abcdefghij", 1, 0, "abcde", 2, 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 2, 1, -1);
+    test("abcdefghij", 1, 0, "abcde", 2, 2, -2);
+    test("abcdefghij", 1, 0, "abcde", 2, 3, -3);
+    test("abcdefghij", 1, 0, "abcde", 2, 4, -3);
+    test("abcdefghij", 1, 0, "abcde", 4, 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 4, 1, -1);
+    test("abcdefghij", 1, 0, "abcde", 4, 2, -1);
+    test("abcdefghij", 1, 0, "abcde", 5, 0, 0);
+    test("abcdefghij", 1, 0, "abcde", 5, 1, 0);
+    test("abcdefghij", 1, 0, "abcde", 6, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghij", 1, 0, "abcdefghij", 0, 11, -10);
+}
+
+void test24()
+{
+    test("abcdefghij", 1, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghij", 1, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghij", 1, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghij", 1, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 1, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 1, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghij", 1, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 1, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 1, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 1, 1, "", 0, 0, 1);
+    test("abcdefghij", 1, 1, "", 0, 1, 1);
+    test("abcdefghij", 1, 1, "", 1, 0, 0);
+    test("abcdefghij", 1, 1, "abcde", 0, 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 0, 1, 1);
+    test("abcdefghij", 1, 1, "abcde", 0, 2, 1);
+    test("abcdefghij", 1, 1, "abcde", 0, 4, 1);
+    test("abcdefghij", 1, 1, "abcde", 0, 5, 1);
+    test("abcdefghij", 1, 1, "abcde", 0, 6, 1);
+    test("abcdefghij", 1, 1, "abcde", 1, 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 1, 1, 0);
+    test("abcdefghij", 1, 1, "abcde", 1, 2, -1);
+    test("abcdefghij", 1, 1, "abcde", 1, 3, -2);
+    test("abcdefghij", 1, 1, "abcde", 1, 4, -3);
+    test("abcdefghij", 1, 1, "abcde", 1, 5, -3);
+    test("abcdefghij", 1, 1, "abcde", 2, 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 2, 1, -1);
+    test("abcdefghij", 1, 1, "abcde", 2, 2, -1);
+    test("abcdefghij", 1, 1, "abcde", 2, 3, -1);
+    test("abcdefghij", 1, 1, "abcde", 2, 4, -1);
+    test("abcdefghij", 1, 1, "abcde", 4, 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 4, 1, -3);
+    test("abcdefghij", 1, 1, "abcde", 4, 2, -3);
+    test("abcdefghij", 1, 1, "abcde", 5, 0, 1);
+    test("abcdefghij", 1, 1, "abcde", 5, 1, 1);
+    test("abcdefghij", 1, 1, "abcde", 6, 0, 0);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 1, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 5, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 10, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 0, 11, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 1, 0);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 4, -3);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 8, -7);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 9, -8);
+    test("abcdefghij", 1, 1, "abcdefghij", 1, 10, -8);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 1, -4);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 2, -4);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 5, -4);
+    test("abcdefghij", 1, 1, "abcdefghij", 5, 6, -4);
+    test("abcdefghij", 1, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 9, 1, -8);
+    test("abcdefghij", 1, 1, "abcdefghij", 9, 2, -8);
+    test("abcdefghij", 1, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghij", 1, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 1, 0);
+}
+
+void test25()
+{
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 9, -8);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 18, -17);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 19, -18);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 1, 20, -18);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghij", 1, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 1, 4, "", 0, 0, 4);
+    test("abcdefghij", 1, 4, "", 0, 1, 4);
+    test("abcdefghij", 1, 4, "", 1, 0, 0);
+    test("abcdefghij", 1, 4, "abcde", 0, 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 0, 1, 1);
+    test("abcdefghij", 1, 4, "abcde", 0, 2, 1);
+    test("abcdefghij", 1, 4, "abcde", 0, 4, 1);
+    test("abcdefghij", 1, 4, "abcde", 0, 5, 1);
+    test("abcdefghij", 1, 4, "abcde", 0, 6, 1);
+    test("abcdefghij", 1, 4, "abcde", 1, 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 1, 1, 3);
+    test("abcdefghij", 1, 4, "abcde", 1, 2, 2);
+    test("abcdefghij", 1, 4, "abcde", 1, 3, 1);
+    test("abcdefghij", 1, 4, "abcde", 1, 4, 0);
+    test("abcdefghij", 1, 4, "abcde", 1, 5, 0);
+    test("abcdefghij", 1, 4, "abcde", 2, 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 2, 1, -1);
+    test("abcdefghij", 1, 4, "abcde", 2, 2, -1);
+    test("abcdefghij", 1, 4, "abcde", 2, 3, -1);
+    test("abcdefghij", 1, 4, "abcde", 2, 4, -1);
+    test("abcdefghij", 1, 4, "abcde", 4, 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 4, 1, -3);
+    test("abcdefghij", 1, 4, "abcde", 4, 2, -3);
+    test("abcdefghij", 1, 4, "abcde", 5, 0, 4);
+    test("abcdefghij", 1, 4, "abcde", 5, 1, 4);
+    test("abcdefghij", 1, 4, "abcde", 6, 0, 0);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 1, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 5, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 10, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 0, 11, 1);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 1, 3);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 4, 0);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 8, -4);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 9, -5);
+    test("abcdefghij", 1, 4, "abcdefghij", 1, 10, -5);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 1, -4);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 2, -4);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 5, -4);
+    test("abcdefghij", 1, 4, "abcdefghij", 5, 6, -4);
+    test("abcdefghij", 1, 4, "abcdefghij", 9, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 9, 1, -8);
+    test("abcdefghij", 1, 4, "abcdefghij", 9, 2, -8);
+    test("abcdefghij", 1, 4, "abcdefghij", 10, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 10, 1, 4);
+    test("abcdefghij", 1, 4, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 1, 3);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 9, -5);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 18, -14);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 19, -15);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 1, 20, -15);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 19, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 20, 0, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 20, 1, 4);
+    test("abcdefghij", 1, 4, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 1, 8, "", 0, 0, 8);
+    test("abcdefghij", 1, 8, "", 0, 1, 8);
+    test("abcdefghij", 1, 8, "", 1, 0, 0);
+    test("abcdefghij", 1, 8, "abcde", 0, 0, 8);
+    test("abcdefghij", 1, 8, "abcde", 0, 1, 1);
+    test("abcdefghij", 1, 8, "abcde", 0, 2, 1);
+    test("abcdefghij", 1, 8, "abcde", 0, 4, 1);
+    test("abcdefghij", 1, 8, "abcde", 0, 5, 1);
+    test("abcdefghij", 1, 8, "abcde", 0, 6, 1);
+    test("abcdefghij", 1, 8, "abcde", 1, 0, 8);
+}
+
+void test26()
+{
+    test("abcdefghij", 1, 8, "abcde", 1, 1, 7);
+    test("abcdefghij", 1, 8, "abcde", 1, 2, 6);
+    test("abcdefghij", 1, 8, "abcde", 1, 3, 5);
+    test("abcdefghij", 1, 8, "abcde", 1, 4, 4);
+    test("abcdefghij", 1, 8, "abcde", 1, 5, 4);
+    test("abcdefghij", 1, 8, "abcde", 2, 0, 8);
+    test("abcdefghij", 1, 8, "abcde", 2, 1, -1);
+    test("abcdefghij", 1, 8, "abcde", 2, 2, -1);
+    test("abcdefghij", 1, 8, "abcde", 2, 3, -1);
+    test("abcdefghij", 1, 8, "abcde", 2, 4, -1);
+    test("abcdefghij", 1, 8, "abcde", 4, 0, 8);
+    test("abcdefghij", 1, 8, "abcde", 4, 1, -3);
+    test("abcdefghij", 1, 8, "abcde", 4, 2, -3);
+    test("abcdefghij", 1, 8, "abcde", 5, 0, 8);
+    test("abcdefghij", 1, 8, "abcde", 5, 1, 8);
+    test("abcdefghij", 1, 8, "abcde", 6, 0, 0);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 1, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 5, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 10, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 0, 11, 1);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 1, 7);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 4, 4);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 8, 0);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 9, -1);
+    test("abcdefghij", 1, 8, "abcdefghij", 1, 10, -1);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 1, -4);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 2, -4);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 5, -4);
+    test("abcdefghij", 1, 8, "abcdefghij", 5, 6, -4);
+    test("abcdefghij", 1, 8, "abcdefghij", 9, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 9, 1, -8);
+    test("abcdefghij", 1, 8, "abcdefghij", 9, 2, -8);
+    test("abcdefghij", 1, 8, "abcdefghij", 10, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 10, 1, 8);
+    test("abcdefghij", 1, 8, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 1, 7);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 18, -10);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 19, -11);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 1, 20, -11);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 19, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 20, 0, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 20, 1, 8);
+    test("abcdefghij", 1, 8, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 1, 9, "", 0, 0, 9);
+    test("abcdefghij", 1, 9, "", 0, 1, 9);
+    test("abcdefghij", 1, 9, "", 1, 0, 0);
+    test("abcdefghij", 1, 9, "abcde", 0, 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 0, 1, 1);
+    test("abcdefghij", 1, 9, "abcde", 0, 2, 1);
+    test("abcdefghij", 1, 9, "abcde", 0, 4, 1);
+    test("abcdefghij", 1, 9, "abcde", 0, 5, 1);
+    test("abcdefghij", 1, 9, "abcde", 0, 6, 1);
+    test("abcdefghij", 1, 9, "abcde", 1, 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 1, 1, 8);
+    test("abcdefghij", 1, 9, "abcde", 1, 2, 7);
+    test("abcdefghij", 1, 9, "abcde", 1, 3, 6);
+    test("abcdefghij", 1, 9, "abcde", 1, 4, 5);
+    test("abcdefghij", 1, 9, "abcde", 1, 5, 5);
+    test("abcdefghij", 1, 9, "abcde", 2, 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 2, 1, -1);
+    test("abcdefghij", 1, 9, "abcde", 2, 2, -1);
+    test("abcdefghij", 1, 9, "abcde", 2, 3, -1);
+    test("abcdefghij", 1, 9, "abcde", 2, 4, -1);
+    test("abcdefghij", 1, 9, "abcde", 4, 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 4, 1, -3);
+    test("abcdefghij", 1, 9, "abcde", 4, 2, -3);
+    test("abcdefghij", 1, 9, "abcde", 5, 0, 9);
+    test("abcdefghij", 1, 9, "abcde", 5, 1, 9);
+    test("abcdefghij", 1, 9, "abcde", 6, 0, 0);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 1, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 5, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 10, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 0, 11, 1);
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 1, 8);
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 4, 5);
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 8, 1);
+}
+
+void test27()
+{
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 9, 0);
+    test("abcdefghij", 1, 9, "abcdefghij", 1, 10, 0);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 1, -4);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 2, -4);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 5, -4);
+    test("abcdefghij", 1, 9, "abcdefghij", 5, 6, -4);
+    test("abcdefghij", 1, 9, "abcdefghij", 9, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 9, 1, -8);
+    test("abcdefghij", 1, 9, "abcdefghij", 9, 2, -8);
+    test("abcdefghij", 1, 9, "abcdefghij", 10, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 10, 1, 9);
+    test("abcdefghij", 1, 9, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 1, 8);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 18, -9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 19, -10);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 1, 20, -10);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 19, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 20, 0, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 20, 1, 9);
+    test("abcdefghij", 1, 9, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 1, 10, "", 0, 0, 9);
+    test("abcdefghij", 1, 10, "", 0, 1, 9);
+    test("abcdefghij", 1, 10, "", 1, 0, 0);
+    test("abcdefghij", 1, 10, "abcde", 0, 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 0, 1, 1);
+    test("abcdefghij", 1, 10, "abcde", 0, 2, 1);
+    test("abcdefghij", 1, 10, "abcde", 0, 4, 1);
+    test("abcdefghij", 1, 10, "abcde", 0, 5, 1);
+    test("abcdefghij", 1, 10, "abcde", 0, 6, 1);
+    test("abcdefghij", 1, 10, "abcde", 1, 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 1, 1, 8);
+    test("abcdefghij", 1, 10, "abcde", 1, 2, 7);
+    test("abcdefghij", 1, 10, "abcde", 1, 3, 6);
+    test("abcdefghij", 1, 10, "abcde", 1, 4, 5);
+    test("abcdefghij", 1, 10, "abcde", 1, 5, 5);
+    test("abcdefghij", 1, 10, "abcde", 2, 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 2, 1, -1);
+    test("abcdefghij", 1, 10, "abcde", 2, 2, -1);
+    test("abcdefghij", 1, 10, "abcde", 2, 3, -1);
+    test("abcdefghij", 1, 10, "abcde", 2, 4, -1);
+    test("abcdefghij", 1, 10, "abcde", 4, 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 4, 1, -3);
+    test("abcdefghij", 1, 10, "abcde", 4, 2, -3);
+    test("abcdefghij", 1, 10, "abcde", 5, 0, 9);
+    test("abcdefghij", 1, 10, "abcde", 5, 1, 9);
+    test("abcdefghij", 1, 10, "abcde", 6, 0, 0);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 1, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 5, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 9, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 10, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 0, 11, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 1, 8);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 4, 5);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 8, 1);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 9, 0);
+    test("abcdefghij", 1, 10, "abcdefghij", 1, 10, 0);
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 1, -4);
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 2, -4);
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 5, -4);
+    test("abcdefghij", 1, 10, "abcdefghij", 5, 6, -4);
+    test("abcdefghij", 1, 10, "abcdefghij", 9, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 9, 1, -8);
+    test("abcdefghij", 1, 10, "abcdefghij", 9, 2, -8);
+    test("abcdefghij", 1, 10, "abcdefghij", 10, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 10, 1, 9);
+    test("abcdefghij", 1, 10, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 1, 8);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 18, -9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 19, -10);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 1, 20, -10);
+}
+
+void test28()
+{
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 19, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 20, 0, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 20, 1, 9);
+    test("abcdefghij", 1, 10, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 5, 0, "", 0, 0, 0);
+    test("abcdefghij", 5, 0, "", 0, 1, 0);
+    test("abcdefghij", 5, 0, "", 1, 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 0, 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 0, 1, -1);
+    test("abcdefghij", 5, 0, "abcde", 0, 2, -2);
+    test("abcdefghij", 5, 0, "abcde", 0, 4, -4);
+    test("abcdefghij", 5, 0, "abcde", 0, 5, -5);
+    test("abcdefghij", 5, 0, "abcde", 0, 6, -5);
+    test("abcdefghij", 5, 0, "abcde", 1, 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 1, 1, -1);
+    test("abcdefghij", 5, 0, "abcde", 1, 2, -2);
+    test("abcdefghij", 5, 0, "abcde", 1, 3, -3);
+    test("abcdefghij", 5, 0, "abcde", 1, 4, -4);
+    test("abcdefghij", 5, 0, "abcde", 1, 5, -4);
+    test("abcdefghij", 5, 0, "abcde", 2, 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 2, 1, -1);
+    test("abcdefghij", 5, 0, "abcde", 2, 2, -2);
+    test("abcdefghij", 5, 0, "abcde", 2, 3, -3);
+    test("abcdefghij", 5, 0, "abcde", 2, 4, -3);
+    test("abcdefghij", 5, 0, "abcde", 4, 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 4, 1, -1);
+    test("abcdefghij", 5, 0, "abcde", 4, 2, -1);
+    test("abcdefghij", 5, 0, "abcde", 5, 0, 0);
+    test("abcdefghij", 5, 0, "abcde", 5, 1, 0);
+    test("abcdefghij", 5, 0, "abcde", 6, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghij", 5, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghij", 5, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 5, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 5, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghij", 5, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 5, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 5, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 5, 1, "", 0, 0, 1);
+    test("abcdefghij", 5, 1, "", 0, 1, 1);
+    test("abcdefghij", 5, 1, "", 1, 0, 0);
+    test("abcdefghij", 5, 1, "abcde", 0, 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 0, 1, 5);
+    test("abcdefghij", 5, 1, "abcde", 0, 2, 5);
+    test("abcdefghij", 5, 1, "abcde", 0, 4, 5);
+    test("abcdefghij", 5, 1, "abcde", 0, 5, 5);
+    test("abcdefghij", 5, 1, "abcde", 0, 6, 5);
+    test("abcdefghij", 5, 1, "abcde", 1, 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 1, 1, 4);
+    test("abcdefghij", 5, 1, "abcde", 1, 2, 4);
+    test("abcdefghij", 5, 1, "abcde", 1, 3, 4);
+    test("abcdefghij", 5, 1, "abcde", 1, 4, 4);
+}
+
+void test29()
+{
+    test("abcdefghij", 5, 1, "abcde", 1, 5, 4);
+    test("abcdefghij", 5, 1, "abcde", 2, 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 2, 1, 3);
+    test("abcdefghij", 5, 1, "abcde", 2, 2, 3);
+    test("abcdefghij", 5, 1, "abcde", 2, 3, 3);
+    test("abcdefghij", 5, 1, "abcde", 2, 4, 3);
+    test("abcdefghij", 5, 1, "abcde", 4, 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 4, 1, 1);
+    test("abcdefghij", 5, 1, "abcde", 4, 2, 1);
+    test("abcdefghij", 5, 1, "abcde", 5, 0, 1);
+    test("abcdefghij", 5, 1, "abcde", 5, 1, 1);
+    test("abcdefghij", 5, 1, "abcde", 6, 0, 0);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 1, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 9, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 10, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 0, 11, 5);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 1, 4);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 4, 4);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 8, 4);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 9, 4);
+    test("abcdefghij", 5, 1, "abcdefghij", 1, 10, 4);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 1, 0);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 2, -1);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 4, -3);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 5, -4);
+    test("abcdefghij", 5, 1, "abcdefghij", 5, 6, -4);
+    test("abcdefghij", 5, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 9, 1, -4);
+    test("abcdefghij", 5, 1, "abcdefghij", 9, 2, -4);
+    test("abcdefghij", 5, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghij", 5, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 1, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 10, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 19, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 20, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 0, 21, 5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 1, 4);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 9, 4);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 18, 4);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 19, 4);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 1, 20, 4);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 1, -5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 9, -5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 10, -5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 10, 11, -5);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 19, 1, -14);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 19, 2, -14);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghij", 5, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 5, 2, "", 0, 0, 2);
+    test("abcdefghij", 5, 2, "", 0, 1, 2);
+    test("abcdefghij", 5, 2, "", 1, 0, 0);
+    test("abcdefghij", 5, 2, "abcde", 0, 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 0, 1, 5);
+    test("abcdefghij", 5, 2, "abcde", 0, 2, 5);
+    test("abcdefghij", 5, 2, "abcde", 0, 4, 5);
+    test("abcdefghij", 5, 2, "abcde", 0, 5, 5);
+    test("abcdefghij", 5, 2, "abcde", 0, 6, 5);
+    test("abcdefghij", 5, 2, "abcde", 1, 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 1, 1, 4);
+    test("abcdefghij", 5, 2, "abcde", 1, 2, 4);
+    test("abcdefghij", 5, 2, "abcde", 1, 3, 4);
+    test("abcdefghij", 5, 2, "abcde", 1, 4, 4);
+    test("abcdefghij", 5, 2, "abcde", 1, 5, 4);
+    test("abcdefghij", 5, 2, "abcde", 2, 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 2, 1, 3);
+    test("abcdefghij", 5, 2, "abcde", 2, 2, 3);
+    test("abcdefghij", 5, 2, "abcde", 2, 3, 3);
+    test("abcdefghij", 5, 2, "abcde", 2, 4, 3);
+    test("abcdefghij", 5, 2, "abcde", 4, 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 4, 1, 1);
+    test("abcdefghij", 5, 2, "abcde", 4, 2, 1);
+    test("abcdefghij", 5, 2, "abcde", 5, 0, 2);
+    test("abcdefghij", 5, 2, "abcde", 5, 1, 2);
+    test("abcdefghij", 5, 2, "abcde", 6, 0, 0);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 1, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 9, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 10, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 0, 11, 5);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 1, 4);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 4, 4);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 8, 4);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 9, 4);
+    test("abcdefghij", 5, 2, "abcdefghij", 1, 10, 4);
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 1, 1);
+}
+
+void test30()
+{
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 2, 0);
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 4, -2);
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 5, -3);
+    test("abcdefghij", 5, 2, "abcdefghij", 5, 6, -3);
+    test("abcdefghij", 5, 2, "abcdefghij", 9, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 9, 1, -4);
+    test("abcdefghij", 5, 2, "abcdefghij", 9, 2, -4);
+    test("abcdefghij", 5, 2, "abcdefghij", 10, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 10, 1, 2);
+    test("abcdefghij", 5, 2, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 1, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 10, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 19, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 20, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 0, 21, 5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 1, 4);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 9, 4);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 18, 4);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 19, 4);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 1, 20, 4);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 1, -5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 9, -5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 10, -5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 10, 11, -5);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 19, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 19, 1, -14);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 19, 2, -14);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 20, 0, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 20, 1, 2);
+    test("abcdefghij", 5, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 5, 4, "", 0, 0, 4);
+    test("abcdefghij", 5, 4, "", 0, 1, 4);
+    test("abcdefghij", 5, 4, "", 1, 0, 0);
+    test("abcdefghij", 5, 4, "abcde", 0, 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 0, 1, 5);
+    test("abcdefghij", 5, 4, "abcde", 0, 2, 5);
+    test("abcdefghij", 5, 4, "abcde", 0, 4, 5);
+    test("abcdefghij", 5, 4, "abcde", 0, 5, 5);
+    test("abcdefghij", 5, 4, "abcde", 0, 6, 5);
+    test("abcdefghij", 5, 4, "abcde", 1, 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 1, 1, 4);
+    test("abcdefghij", 5, 4, "abcde", 1, 2, 4);
+    test("abcdefghij", 5, 4, "abcde", 1, 3, 4);
+    test("abcdefghij", 5, 4, "abcde", 1, 4, 4);
+    test("abcdefghij", 5, 4, "abcde", 1, 5, 4);
+    test("abcdefghij", 5, 4, "abcde", 2, 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 2, 1, 3);
+    test("abcdefghij", 5, 4, "abcde", 2, 2, 3);
+    test("abcdefghij", 5, 4, "abcde", 2, 3, 3);
+    test("abcdefghij", 5, 4, "abcde", 2, 4, 3);
+    test("abcdefghij", 5, 4, "abcde", 4, 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 4, 1, 1);
+    test("abcdefghij", 5, 4, "abcde", 4, 2, 1);
+    test("abcdefghij", 5, 4, "abcde", 5, 0, 4);
+    test("abcdefghij", 5, 4, "abcde", 5, 1, 4);
+    test("abcdefghij", 5, 4, "abcde", 6, 0, 0);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 1, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 9, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 10, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 0, 11, 5);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 1, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 4, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 8, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 9, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 1, 10, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 1, 3);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 2, 2);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 4, 0);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 5, -1);
+    test("abcdefghij", 5, 4, "abcdefghij", 5, 6, -1);
+    test("abcdefghij", 5, 4, "abcdefghij", 9, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 9, 1, -4);
+    test("abcdefghij", 5, 4, "abcdefghij", 9, 2, -4);
+    test("abcdefghij", 5, 4, "abcdefghij", 10, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 10, 1, 4);
+    test("abcdefghij", 5, 4, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 1, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 10, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 19, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 20, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 0, 21, 5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 1, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 9, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 18, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 19, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 1, 20, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 1, -5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 9, -5);
+}
+
+void test31()
+{
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 10, -5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 10, 11, -5);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 19, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 19, 1, -14);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 19, 2, -14);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 20, 0, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 20, 1, 4);
+    test("abcdefghij", 5, 4, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 5, 5, "", 0, 0, 5);
+    test("abcdefghij", 5, 5, "", 0, 1, 5);
+    test("abcdefghij", 5, 5, "", 1, 0, 0);
+    test("abcdefghij", 5, 5, "abcde", 0, 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 0, 1, 5);
+    test("abcdefghij", 5, 5, "abcde", 0, 2, 5);
+    test("abcdefghij", 5, 5, "abcde", 0, 4, 5);
+    test("abcdefghij", 5, 5, "abcde", 0, 5, 5);
+    test("abcdefghij", 5, 5, "abcde", 0, 6, 5);
+    test("abcdefghij", 5, 5, "abcde", 1, 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 1, 1, 4);
+    test("abcdefghij", 5, 5, "abcde", 1, 2, 4);
+    test("abcdefghij", 5, 5, "abcde", 1, 3, 4);
+    test("abcdefghij", 5, 5, "abcde", 1, 4, 4);
+    test("abcdefghij", 5, 5, "abcde", 1, 5, 4);
+    test("abcdefghij", 5, 5, "abcde", 2, 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 2, 1, 3);
+    test("abcdefghij", 5, 5, "abcde", 2, 2, 3);
+    test("abcdefghij", 5, 5, "abcde", 2, 3, 3);
+    test("abcdefghij", 5, 5, "abcde", 2, 4, 3);
+    test("abcdefghij", 5, 5, "abcde", 4, 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 4, 1, 1);
+    test("abcdefghij", 5, 5, "abcde", 4, 2, 1);
+    test("abcdefghij", 5, 5, "abcde", 5, 0, 5);
+    test("abcdefghij", 5, 5, "abcde", 5, 1, 5);
+    test("abcdefghij", 5, 5, "abcde", 6, 0, 0);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 1, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 9, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 10, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 0, 11, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 1, 4);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 4, 4);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 8, 4);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 9, 4);
+    test("abcdefghij", 5, 5, "abcdefghij", 1, 10, 4);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 1, 4);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 2, 3);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 4, 1);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 5, 0);
+    test("abcdefghij", 5, 5, "abcdefghij", 5, 6, 0);
+    test("abcdefghij", 5, 5, "abcdefghij", 9, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 9, 1, -4);
+    test("abcdefghij", 5, 5, "abcdefghij", 9, 2, -4);
+    test("abcdefghij", 5, 5, "abcdefghij", 10, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 10, 1, 5);
+    test("abcdefghij", 5, 5, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 1, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 10, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 19, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 20, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 0, 21, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 1, 4);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 9, 4);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 18, 4);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 19, 4);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 1, 20, 4);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 1, -5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 9, -5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 10, -5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 10, 11, -5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 19, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 19, 1, -14);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 19, 2, -14);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 20, 0, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 20, 1, 5);
+    test("abcdefghij", 5, 5, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 5, 6, "", 0, 0, 5);
+    test("abcdefghij", 5, 6, "", 0, 1, 5);
+    test("abcdefghij", 5, 6, "", 1, 0, 0);
+    test("abcdefghij", 5, 6, "abcde", 0, 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 0, 1, 5);
+    test("abcdefghij", 5, 6, "abcde", 0, 2, 5);
+    test("abcdefghij", 5, 6, "abcde", 0, 4, 5);
+    test("abcdefghij", 5, 6, "abcde", 0, 5, 5);
+    test("abcdefghij", 5, 6, "abcde", 0, 6, 5);
+    test("abcdefghij", 5, 6, "abcde", 1, 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 1, 1, 4);
+    test("abcdefghij", 5, 6, "abcde", 1, 2, 4);
+    test("abcdefghij", 5, 6, "abcde", 1, 3, 4);
+    test("abcdefghij", 5, 6, "abcde", 1, 4, 4);
+    test("abcdefghij", 5, 6, "abcde", 1, 5, 4);
+    test("abcdefghij", 5, 6, "abcde", 2, 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 2, 1, 3);
+    test("abcdefghij", 5, 6, "abcde", 2, 2, 3);
+}
+
+void test32()
+{
+    test("abcdefghij", 5, 6, "abcde", 2, 3, 3);
+    test("abcdefghij", 5, 6, "abcde", 2, 4, 3);
+    test("abcdefghij", 5, 6, "abcde", 4, 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 4, 1, 1);
+    test("abcdefghij", 5, 6, "abcde", 4, 2, 1);
+    test("abcdefghij", 5, 6, "abcde", 5, 0, 5);
+    test("abcdefghij", 5, 6, "abcde", 5, 1, 5);
+    test("abcdefghij", 5, 6, "abcde", 6, 0, 0);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 1, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 5, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 9, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 10, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 0, 11, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 1, 4);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 4, 4);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 8, 4);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 9, 4);
+    test("abcdefghij", 5, 6, "abcdefghij", 1, 10, 4);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 1, 4);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 2, 3);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 4, 1);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 5, 0);
+    test("abcdefghij", 5, 6, "abcdefghij", 5, 6, 0);
+    test("abcdefghij", 5, 6, "abcdefghij", 9, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 9, 1, -4);
+    test("abcdefghij", 5, 6, "abcdefghij", 9, 2, -4);
+    test("abcdefghij", 5, 6, "abcdefghij", 10, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 10, 1, 5);
+    test("abcdefghij", 5, 6, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 1, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 10, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 19, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 20, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 0, 21, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 1, 4);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 9, 4);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 18, 4);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 19, 4);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 1, 20, 4);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 1, -5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 9, -5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 10, -5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 10, 11, -5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 19, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 19, 1, -14);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 19, 2, -14);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 20, 0, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 20, 1, 5);
+    test("abcdefghij", 5, 6, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 9, 0, "", 0, 0, 0);
+    test("abcdefghij", 9, 0, "", 0, 1, 0);
+    test("abcdefghij", 9, 0, "", 1, 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 0, 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 0, 1, -1);
+    test("abcdefghij", 9, 0, "abcde", 0, 2, -2);
+    test("abcdefghij", 9, 0, "abcde", 0, 4, -4);
+    test("abcdefghij", 9, 0, "abcde", 0, 5, -5);
+    test("abcdefghij", 9, 0, "abcde", 0, 6, -5);
+    test("abcdefghij", 9, 0, "abcde", 1, 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 1, 1, -1);
+    test("abcdefghij", 9, 0, "abcde", 1, 2, -2);
+    test("abcdefghij", 9, 0, "abcde", 1, 3, -3);
+    test("abcdefghij", 9, 0, "abcde", 1, 4, -4);
+    test("abcdefghij", 9, 0, "abcde", 1, 5, -4);
+    test("abcdefghij", 9, 0, "abcde", 2, 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 2, 1, -1);
+    test("abcdefghij", 9, 0, "abcde", 2, 2, -2);
+    test("abcdefghij", 9, 0, "abcde", 2, 3, -3);
+    test("abcdefghij", 9, 0, "abcde", 2, 4, -3);
+    test("abcdefghij", 9, 0, "abcde", 4, 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 4, 1, -1);
+    test("abcdefghij", 9, 0, "abcde", 4, 2, -1);
+    test("abcdefghij", 9, 0, "abcde", 5, 0, 0);
+    test("abcdefghij", 9, 0, "abcde", 5, 1, 0);
+    test("abcdefghij", 9, 0, "abcde", 6, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghij", 9, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghij", 9, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 9, 0, "abcdefghij", 5, 6, -5);
+}
+
+void test33()
+{
+    test("abcdefghij", 9, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghij", 9, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 9, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 9, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 9, 1, "", 0, 0, 1);
+    test("abcdefghij", 9, 1, "", 0, 1, 1);
+    test("abcdefghij", 9, 1, "", 1, 0, 0);
+    test("abcdefghij", 9, 1, "abcde", 0, 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 0, 1, 9);
+    test("abcdefghij", 9, 1, "abcde", 0, 2, 9);
+    test("abcdefghij", 9, 1, "abcde", 0, 4, 9);
+    test("abcdefghij", 9, 1, "abcde", 0, 5, 9);
+    test("abcdefghij", 9, 1, "abcde", 0, 6, 9);
+    test("abcdefghij", 9, 1, "abcde", 1, 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 1, 1, 8);
+    test("abcdefghij", 9, 1, "abcde", 1, 2, 8);
+    test("abcdefghij", 9, 1, "abcde", 1, 3, 8);
+    test("abcdefghij", 9, 1, "abcde", 1, 4, 8);
+    test("abcdefghij", 9, 1, "abcde", 1, 5, 8);
+    test("abcdefghij", 9, 1, "abcde", 2, 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 2, 1, 7);
+    test("abcdefghij", 9, 1, "abcde", 2, 2, 7);
+    test("abcdefghij", 9, 1, "abcde", 2, 3, 7);
+    test("abcdefghij", 9, 1, "abcde", 2, 4, 7);
+    test("abcdefghij", 9, 1, "abcde", 4, 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 4, 1, 5);
+    test("abcdefghij", 9, 1, "abcde", 4, 2, 5);
+    test("abcdefghij", 9, 1, "abcde", 5, 0, 1);
+    test("abcdefghij", 9, 1, "abcde", 5, 1, 1);
+    test("abcdefghij", 9, 1, "abcde", 6, 0, 0);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 1, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 5, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 9, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 10, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 0, 11, 9);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 1, 8);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 4, 8);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 8, 8);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 9, 8);
+    test("abcdefghij", 9, 1, "abcdefghij", 1, 10, 8);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 1, 4);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 2, 4);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 4, 4);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 5, 4);
+    test("abcdefghij", 9, 1, "abcdefghij", 5, 6, 4);
+    test("abcdefghij", 9, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 9, 1, 0);
+    test("abcdefghij", 9, 1, "abcdefghij", 9, 2, 0);
+    test("abcdefghij", 9, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghij", 9, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 1, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 10, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 19, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 20, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 0, 21, 9);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 1, 8);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 9, 8);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 18, 8);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 19, 8);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 1, 20, 8);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 5, -1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 9, -1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 10, -1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 10, 11, -1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 19, 1, -10);
+}
+
+void test34()
+{
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 19, 2, -10);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghij", 9, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 9, 2, "", 0, 0, 1);
+    test("abcdefghij", 9, 2, "", 0, 1, 1);
+    test("abcdefghij", 9, 2, "", 1, 0, 0);
+    test("abcdefghij", 9, 2, "abcde", 0, 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 0, 1, 9);
+    test("abcdefghij", 9, 2, "abcde", 0, 2, 9);
+    test("abcdefghij", 9, 2, "abcde", 0, 4, 9);
+    test("abcdefghij", 9, 2, "abcde", 0, 5, 9);
+    test("abcdefghij", 9, 2, "abcde", 0, 6, 9);
+    test("abcdefghij", 9, 2, "abcde", 1, 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 1, 1, 8);
+    test("abcdefghij", 9, 2, "abcde", 1, 2, 8);
+    test("abcdefghij", 9, 2, "abcde", 1, 3, 8);
+    test("abcdefghij", 9, 2, "abcde", 1, 4, 8);
+    test("abcdefghij", 9, 2, "abcde", 1, 5, 8);
+    test("abcdefghij", 9, 2, "abcde", 2, 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 2, 1, 7);
+    test("abcdefghij", 9, 2, "abcde", 2, 2, 7);
+    test("abcdefghij", 9, 2, "abcde", 2, 3, 7);
+    test("abcdefghij", 9, 2, "abcde", 2, 4, 7);
+    test("abcdefghij", 9, 2, "abcde", 4, 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 4, 1, 5);
+    test("abcdefghij", 9, 2, "abcde", 4, 2, 5);
+    test("abcdefghij", 9, 2, "abcde", 5, 0, 1);
+    test("abcdefghij", 9, 2, "abcde", 5, 1, 1);
+    test("abcdefghij", 9, 2, "abcde", 6, 0, 0);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 1, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 5, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 9, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 10, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 0, 11, 9);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 1, 8);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 4, 8);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 8, 8);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 9, 8);
+    test("abcdefghij", 9, 2, "abcdefghij", 1, 10, 8);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 1, 4);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 2, 4);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 4, 4);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 5, 4);
+    test("abcdefghij", 9, 2, "abcdefghij", 5, 6, 4);
+    test("abcdefghij", 9, 2, "abcdefghij", 9, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 9, 1, 0);
+    test("abcdefghij", 9, 2, "abcdefghij", 9, 2, 0);
+    test("abcdefghij", 9, 2, "abcdefghij", 10, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 10, 1, 1);
+    test("abcdefghij", 9, 2, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 1, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 10, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 19, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 20, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 0, 21, 9);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 1, 8);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 9, 8);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 18, 8);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 19, 8);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 1, 20, 8);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 5, -1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 9, -1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 10, -1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 10, 11, -1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 19, 1, -10);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 19, 2, -10);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghij", 9, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 10, 0, "", 0, 0, 0);
+    test("abcdefghij", 10, 0, "", 0, 1, 0);
+    test("abcdefghij", 10, 0, "", 1, 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 0, 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 0, 1, -1);
+    test("abcdefghij", 10, 0, "abcde", 0, 2, -2);
+    test("abcdefghij", 10, 0, "abcde", 0, 4, -4);
+    test("abcdefghij", 10, 0, "abcde", 0, 5, -5);
+    test("abcdefghij", 10, 0, "abcde", 0, 6, -5);
+    test("abcdefghij", 10, 0, "abcde", 1, 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 1, 1, -1);
+    test("abcdefghij", 10, 0, "abcde", 1, 2, -2);
+    test("abcdefghij", 10, 0, "abcde", 1, 3, -3);
+    test("abcdefghij", 10, 0, "abcde", 1, 4, -4);
+    test("abcdefghij", 10, 0, "abcde", 1, 5, -4);
+    test("abcdefghij", 10, 0, "abcde", 2, 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 2, 1, -1);
+    test("abcdefghij", 10, 0, "abcde", 2, 2, -2);
+    test("abcdefghij", 10, 0, "abcde", 2, 3, -3);
+    test("abcdefghij", 10, 0, "abcde", 2, 4, -3);
+    test("abcdefghij", 10, 0, "abcde", 4, 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 4, 1, -1);
+}
+
+void test35()
+{
+    test("abcdefghij", 10, 0, "abcde", 4, 2, -1);
+    test("abcdefghij", 10, 0, "abcde", 5, 0, 0);
+    test("abcdefghij", 10, 0, "abcde", 5, 1, 0);
+    test("abcdefghij", 10, 0, "abcde", 6, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghij", 10, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghij", 10, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 10, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 10, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghij", 10, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 10, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 10, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 10, 1, "", 0, 0, 0);
+    test("abcdefghij", 10, 1, "", 0, 1, 0);
+    test("abcdefghij", 10, 1, "", 1, 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 0, 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 0, 1, -1);
+    test("abcdefghij", 10, 1, "abcde", 0, 2, -2);
+    test("abcdefghij", 10, 1, "abcde", 0, 4, -4);
+    test("abcdefghij", 10, 1, "abcde", 0, 5, -5);
+    test("abcdefghij", 10, 1, "abcde", 0, 6, -5);
+    test("abcdefghij", 10, 1, "abcde", 1, 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 1, 1, -1);
+    test("abcdefghij", 10, 1, "abcde", 1, 2, -2);
+    test("abcdefghij", 10, 1, "abcde", 1, 3, -3);
+    test("abcdefghij", 10, 1, "abcde", 1, 4, -4);
+    test("abcdefghij", 10, 1, "abcde", 1, 5, -4);
+    test("abcdefghij", 10, 1, "abcde", 2, 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 2, 1, -1);
+    test("abcdefghij", 10, 1, "abcde", 2, 2, -2);
+    test("abcdefghij", 10, 1, "abcde", 2, 3, -3);
+    test("abcdefghij", 10, 1, "abcde", 2, 4, -3);
+    test("abcdefghij", 10, 1, "abcde", 4, 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 4, 1, -1);
+    test("abcdefghij", 10, 1, "abcde", 4, 2, -1);
+    test("abcdefghij", 10, 1, "abcde", 5, 0, 0);
+    test("abcdefghij", 10, 1, "abcde", 5, 1, 0);
+    test("abcdefghij", 10, 1, "abcde", 6, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 5, -5);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 9, -9);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 10, -10);
+    test("abcdefghij", 10, 1, "abcdefghij", 0, 11, -10);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, 4, -4);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, 8, -8);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, 9, -9);
+    test("abcdefghij", 10, 1, "abcdefghij", 1, 10, -9);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, 2, -2);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, 4, -4);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, 5, -5);
+    test("abcdefghij", 10, 1, "abcdefghij", 5, 6, -5);
+    test("abcdefghij", 10, 1, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 9, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghij", 9, 2, -1);
+    test("abcdefghij", 10, 1, "abcdefghij", 10, 0, 0);
+}
+
+void test36()
+{
+    test("abcdefghij", 10, 1, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 10, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 10, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghij", 11, 0, "", 0, 0, 0);
+    test("abcdefghij", 11, 0, "", 0, 1, 0);
+    test("abcdefghij", 11, 0, "", 1, 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 1, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 2, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 4, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 5, 0);
+    test("abcdefghij", 11, 0, "abcde", 0, 6, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 1, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 2, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 3, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 4, 0);
+    test("abcdefghij", 11, 0, "abcde", 1, 5, 0);
+    test("abcdefghij", 11, 0, "abcde", 2, 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 2, 1, 0);
+    test("abcdefghij", 11, 0, "abcde", 2, 2, 0);
+    test("abcdefghij", 11, 0, "abcde", 2, 3, 0);
+    test("abcdefghij", 11, 0, "abcde", 2, 4, 0);
+    test("abcdefghij", 11, 0, "abcde", 4, 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 4, 1, 0);
+    test("abcdefghij", 11, 0, "abcde", 4, 2, 0);
+    test("abcdefghij", 11, 0, "abcde", 5, 0, 0);
+    test("abcdefghij", 11, 0, "abcde", 5, 1, 0);
+    test("abcdefghij", 11, 0, "abcde", 6, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 5, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 9, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 10, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 0, 11, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 4, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 8, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 9, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 1, 10, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 2, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 4, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 5, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 5, 6, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 9, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 9, 2, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 19, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 20, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 0, 21, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 18, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 19, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 1, 20, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 5, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 9, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 10, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 10, 11, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 19, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 19, 2, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghij", 11, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+}
+
+void test37()
+{
+    test("abcdefghijklmnopqrst", 0, 0, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 4, -4);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 0, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, 3, -3);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 1, 5, -4);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, 3, -3);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 2, 4, -3);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 4, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 4, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 4, -3);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 5, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 0, 6, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 3, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 1, 5, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, 1, -2);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, 3, -2);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 2, 4, -2);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 4, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 4, 1, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 4, 2, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 5, 1, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcde", 6, 0, 0);
+}
+
+void test38()
+{
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 5, -4);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 9, -8);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 10, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 0, 11, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 8, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 1, 10, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, 1, -5);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, 2, -5);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, 4, -5);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 9, 1, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 9, 2, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 10, -9);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 19, -18);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 20, -19);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 0, 21, -19);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghijklmnopqrst", 0, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 1, 9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 2, 8);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 4, 6);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 5, 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 0, 6, 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 3, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 1, 5, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 1, -2);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 3, -2);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 2, 4, -2);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 4, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 4, 1, -4);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 4, 2, -4);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 5, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 5, 1, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 1, 9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 5, 5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 9, 1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 10, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 0, 11, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 8, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 1, 10, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 1, -5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 2, -5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 4, -5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 9, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 9, 1, -9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 9, 2, -9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 10, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 10, 1, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 1, 9);
+}
+
+void test39()
+{
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 19, -9);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 20, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 0, 21, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 19, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 20, 0, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 20, 1, 10);
+    test("abcdefghijklmnopqrst", 0, 10, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 19, "", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 1, 18);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 2, 17);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 4, 15);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 5, 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 0, 6, 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 3, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 1, 5, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 1, -2);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 3, -2);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 2, 4, -2);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 4, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 4, 1, -4);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 4, 2, -4);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 5, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 5, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 1, 18);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 5, 14);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 9, 10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 10, 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 0, 11, 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 8, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 1, 10, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 1, -5);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 2, -5);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 4, -5);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9, 1, -9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 9, 2, -9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 10, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 10, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 1, 18);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 10, 9);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 19, 0);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 20, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 0, 21, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 19, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 20, 0, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 20, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 19, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 20, "", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "", 0, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 0, 20);
+}
+
+void test40()
+{
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 2, 18);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 4, 16);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 5, 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 0, 6, 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 3, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 1, 5, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 1, -2);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 3, -2);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 2, 4, -2);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 4, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 4, 1, -4);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 4, 2, -4);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 5, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 5, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 5, 15);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 9, 11);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 8, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 1, 10, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 1, -5);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 2, -5);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 4, -5);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 9, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 9, 1, -9);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 9, 2, -9);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 10, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 10, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 20, 0);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 0, 21, 0);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 19, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 20, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 20, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 20, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "", 0, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 2, 18);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 4, 16);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 5, 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 0, 6, 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 2, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 3, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 1, 5, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 1, -2);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 3, -2);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 2, 4, -2);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 4, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 4, 1, -4);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 4, 2, -4);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 5, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 5, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 5, 15);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 9, 11);
+}
+
+void test41()
+{
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 4, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 8, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 1, 10, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 1, -5);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 2, -5);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 4, -5);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 9, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 9, 1, -9);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 9, 2, -9);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 10, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 10, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 20, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 0, 21, 0);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 9, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 18, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 1, -10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 5, -10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 9, -10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 19, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 19, 1, -19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 19, 2, -19);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 20, 0, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 20, 1, 20);
+    test("abcdefghijklmnopqrst", 0, 21, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 2, -2);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 0, 6, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, 2, -2);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, 3, -3);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 1, 5, -4);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, 3, -3);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 2, 4, -3);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 4, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 4, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+}
+
+void test42()
+{
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 2, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 4, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 0, 6, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 3, -2);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 4, -3);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 1, 5, -3);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 3, -1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 2, 4, -1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 4, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 4, 1, -3);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 4, 2, -3);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 5, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 9, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 0, 11, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 4, -3);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 8, -7);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 9, -8);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 1, 10, -8);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 1, -4);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 2, -4);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 5, -4);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 5, 6, -4);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 9, 1, -8);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 9, 2, -8);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 1, 0);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 9, -8);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 18, -17);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 19, -18);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 1, 20, -18);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "", 0, 1, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 2, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 4, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 5, 1);
+}
+
+void test43()
+{
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 0, 6, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 1, 8);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 2, 7);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 3, 6);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 4, 5);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 1, 5, 5);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 3, -1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 2, 4, -1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 4, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 4, 1, -3);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 4, 2, -3);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 5, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 5, 1, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 9, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 0, 11, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 1, 8);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 4, 5);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 8, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 9, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 1, 10, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 1, -4);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 2, -4);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 5, -4);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 5, 6, -4);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 9, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 9, 1, -8);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 9, 2, -8);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 10, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 10, 1, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 1, 8);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 18, -9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 19, -10);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 1, 20, -10);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 19, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 20, 0, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 20, 1, 9);
+    test("abcdefghijklmnopqrst", 1, 9, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 18, "", 0, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "", 0, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 2, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 4, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 0, 6, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 1, 17);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 2, 16);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 3, 15);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 4, 14);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 1, 5, 14);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 3, -1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 2, 4, -1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 4, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 4, 1, -3);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 4, 2, -3);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 5, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 5, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 9, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 0, 11, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 1, 17);
+}
+
+void test44()
+{
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 4, 14);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 8, 10);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 1, 10, 9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 1, -4);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 2, -4);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 5, -4);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 5, 6, -4);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 9, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 9, 1, -8);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 9, 2, -8);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 10, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 10, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 1, 17);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 18, 0);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 19, -1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 1, 20, -1);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 19, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 20, 0, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 20, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 18, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 19, "", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 2, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 4, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 0, 6, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 2, 17);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 3, 16);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 4, 15);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 1, 5, 15);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 3, -1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 2, 4, -1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 4, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 4, 1, -3);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 4, 2, -3);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 5, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 5, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 9, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 0, 11, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 4, 15);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 8, 11);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 9, 10);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 1, 10, 10);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 1, -4);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 2, -4);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 5, -4);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 5, 6, -4);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 9, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 9, 1, -8);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 9, 2, -8);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 10, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 10, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 9, 10);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 18, 1);
+}
+
+void test45()
+{
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 19, 0);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 1, 20, 0);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 19, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 20, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 20, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 19, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 20, "", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 2, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 4, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 0, 6, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 2, 17);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 3, 16);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 4, 15);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 1, 5, 15);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 2, -1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 3, -1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 2, 4, -1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 4, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 4, 1, -3);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 4, 2, -3);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 5, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 5, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 5, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 9, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 0, 11, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 4, 15);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 8, 11);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 9, 10);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 1, 10, 10);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 1, -4);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 2, -4);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 5, -4);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 5, 6, -4);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 9, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 9, 1, -8);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 9, 2, -8);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 10, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 10, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 10, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 19, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 20, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 0, 21, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 9, 10);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 18, 1);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 19, 0);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 1, 20, 0);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 1, -9);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 5, -9);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 19, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 19, 1, -18);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 19, 2, -18);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 20, 0, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 20, 1, 19);
+    test("abcdefghijklmnopqrst", 1, 20, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 2, -2);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 4, -4);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 0, 6, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, 2, -2);
+}
+
+void test46()
+{
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, 3, -3);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 1, 5, -4);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, 3, -3);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 2, 4, -3);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 4, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 4, 2, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 10, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 1, "", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 2, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 4, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 0, 6, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 2, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 3, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 1, 5, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 1, 8);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 2, 8);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 3, 8);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 2, 4, 8);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 4, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 4, 1, 6);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 4, 2, 6);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 5, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 9, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 8, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 1, 10, 9);
+}
+
+void test47()
+{
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 2, 5);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 4, 5);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 5, 6, 5);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 9, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 9, 2, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 19, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 20, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 0, 21, 10);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 18, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 19, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 1, 20, 9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 5, -4);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 9, -8);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 10, -9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 10, 11, -9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 19, 1, -9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 19, 2, -9);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 5, "", 0, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "", 0, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 2, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 4, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 0, 6, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 2, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 3, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 1, 5, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 1, 8);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 2, 8);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 3, 8);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 2, 4, 8);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 4, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 4, 1, 6);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 4, 2, 6);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 5, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 5, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 9, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 8, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 1, 10, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 2, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 4, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 5, 6, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 9, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 9, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 9, 2, 1);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 10, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 10, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 19, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 20, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 0, 21, 10);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 18, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 19, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 1, 20, 9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 1, 4);
+}
+
+void test48()
+{
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 5, 0);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 9, -4);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 10, -5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 10, 11, -5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 19, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 19, 1, -9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 19, 2, -9);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 20, 0, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 20, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 5, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 9, "", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "", 0, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 2, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 4, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 0, 6, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 2, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 3, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 1, 5, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 1, 8);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 2, 8);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 3, 8);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 2, 4, 8);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 4, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 4, 1, 6);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 4, 2, 6);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 5, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 5, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 9, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 8, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 1, 10, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 2, 5);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 4, 5);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 5, 6, 5);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 9, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 9, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 9, 2, 1);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 10, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 10, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 19, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 20, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 0, 21, 10);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 18, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 19, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 1, 20, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 1, 8);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 5, 4);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 9, 0);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 10, -1);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 10, 11, -1);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 19, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 19, 1, -9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 19, 2, -9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 20, 0, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 20, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 9, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 10, "", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 2, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 4, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 0, 6, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 2, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 3, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 1, 5, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 0, 10);
+}
+
+void test49()
+{
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 1, 8);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 2, 8);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 3, 8);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 2, 4, 8);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 4, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 4, 1, 6);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 4, 2, 6);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 5, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 5, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 9, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 8, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 1, 10, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 2, 5);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 4, 5);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 5, 6, 5);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 9, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 9, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 9, 2, 1);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 10, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 10, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 19, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 20, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 0, 21, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 18, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 19, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 1, 20, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 9, 1);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 10, 0);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 10, 11, 0);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 19, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 19, 1, -9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 19, 2, -9);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 20, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 20, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 10, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 11, "", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 2, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 4, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 0, 6, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 2, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 3, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 1, 5, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 1, 8);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 2, 8);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 3, 8);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 2, 4, 8);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 4, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 4, 1, 6);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 4, 2, 6);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 5, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 5, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 5, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 9, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 0, 11, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 4, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 8, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 1, 10, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 1, 5);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 2, 5);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 4, 5);
+}
+
+void test50()
+{
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 5, 6, 5);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 9, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 9, 1, 1);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 9, 2, 1);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 10, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 10, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 10, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 19, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 20, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 0, 21, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 9, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 18, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 19, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 1, 20, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 1, 9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 5, 5);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 9, 1);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 10, 0);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 10, 11, 0);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 19, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 19, 1, -9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 19, 2, -9);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 20, 0, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 20, 1, 10);
+    test("abcdefghijklmnopqrst", 10, 11, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 2, -2);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 4, -4);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 0, 6, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, 2, -2);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, 3, -3);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 1, 5, -4);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, 3, -3);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 2, 4, -3);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 4, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 4, 2, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 9, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+}
+
+void test51()
+{
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 19, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 1, "", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 2, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 4, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 5, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 0, 6, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 2, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 3, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 4, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 1, 5, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 1, 17);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 2, 17);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 3, 17);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 2, 4, 17);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 4, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 4, 1, 15);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 4, 2, 15);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 5, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 5, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 9, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 10, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 0, 11, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 4, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 8, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 9, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 1, 10, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 1, 14);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 2, 14);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 4, 14);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 5, 14);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 5, 6, 14);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 9, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 9, 1, 10);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 9, 2, 10);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 10, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 10, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 19, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 20, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 0, 21, 19);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 9, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 18, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 19, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 1, 20, 18);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 1, 9);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 5, 9);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 9, 9);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 10, 9);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 10, 11, 9);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19, 1, 0);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 19, 2, 0);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 2, "", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "", 0, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 2, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 4, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 5, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 0, 6, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 2, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 3, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 4, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 1, 5, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 1, 17);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 2, 17);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 3, 17);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 2, 4, 17);
+}
+
+void test52()
+{
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 4, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 4, 1, 15);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 4, 2, 15);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 5, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 5, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 9, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 10, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 0, 11, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 4, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 8, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 9, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 1, 10, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 1, 14);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 2, 14);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 4, 14);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 5, 14);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 5, 6, 14);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 9, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 9, 1, 10);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 9, 2, 10);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 10, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 1, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 10, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 19, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 20, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 0, 21, 19);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 1, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 9, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 18, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 19, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 1, 20, 18);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 1, 9);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 5, 9);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 9, 9);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 10, 9);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 10, 11, 9);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19, 1, 0);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 19, 2, 0);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 20, 0, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 20, 1, 1);
+    test("abcdefghijklmnopqrst", 19, 2, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 0, 6, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, 3, -3);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 1, 5, -4);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, 3, -3);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 2, 4, -3);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 4, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 4, 2, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 0, 11, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, 8, -8);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 1, 10, -9);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 9, 1, -1);
+}
+
+void test53()
+{
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 9, 2, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 0, 6, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, 3, -3);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 1, 5, -4);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, 3, -3);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 2, 4, -3);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 4, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 4, 2, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 0, 11, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, 8, -8);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 1, 10, -9);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, 2, -2);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, 4, -4);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 5, 6, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 9, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 9, 2, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 10, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 19, -19);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 20, -20);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 0, 21, -20);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, 18, -18);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, 19, -19);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 1, 20, -19);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, 5, -5);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, 9, -9);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, 10, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 10, 11, -10);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 19, 1, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 19, 2, -1);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 20, 0, 0);
+}
+
+void test54()
+{
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 20, 1, "abcdefghijklmnopqrst", 21, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 4, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 0, 6, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 3, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 4, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 1, 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 3, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 2, 4, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 4, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 4, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 4, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcde", 6, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 9, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 10, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 0, 11, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 4, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 8, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 9, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 1, 10, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 4, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 5, 6, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 9, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 9, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 9, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghij", 11, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 10, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 19, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 20, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 0, 21, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 9, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 18, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 19, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 1, 20, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 5, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 9, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 10, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 10, 11, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 19, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 19, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 19, 2, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 20, 0, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 20, 1, 0);
+    test("abcdefghijklmnopqrst", 21, 0, "abcdefghijklmnopqrst", 21, 0, 0);
+}
+
+
+int main(int, char**) {
+    test0();
+    test1();
+    test2();
+    test3();
+    test4();
+    test5();
+    test6();
+    test7();
+    test8();
+    test9();
+    test10();
+    test11();
+    test12();
+    test13();
+    test14();
+    test15();
+    test16();
+    test17();
+    test18();
+    test19();
+    test20();
+    test21();
+    test22();
+    test23();
+    test24();
+    test25();
+    test26();
+    test27();
+    test28();
+    test29();
+    test30();
+    test31();
+    test32();
+    test33();
+    test34();
+    test35();
+    test36();
+    test37();
+    test38();
+    test39();
+    test40();
+    test41();
+    test42();
+    test43();
+    test44();
+    test45();
+    test46();
+    test47();
+    test48();
+    test49();
+    test50();
+    test51();
+    test52();
+    test53();
+    test54();
+
+
+    {
+    test("abcde", 5, 1, "", 0, 0, 0);
+    test("abcde", 2, 4, "", 0, 0, 3);
+    test("abcde", 2, 4, "abcde", 3, 4, -2);
+    test("ABCde", 2, 4, "abcde", 2, 4, -1);
+    }
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    {
+    test(L"abcde", 5, 1, L"", 0, 0, 0);
+    test(L"abcde", 2, 4, L"", 0, 0, 3);
+    test(L"abcde", 2, 4, L"abcde", 3, 4, -2);
+    test(L"ABCde", 2, 4, L"abcde", 2, 4, -1);
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    {
+    test(u"abcde", 5, 1, u"", 0, 0, 0);
+    test(u"abcde", 2, 4, u"", 0, 0, 3);
+    test(u"abcde", 2, 4, u"abcde", 3, 4, -2);
+    test(u"ABCde", 2, 4, u"abcde", 2, 4, -1);
+    }
+
+    {
+    test(U"abcde", 5, 1, U"", 0, 0, 0);
+    test(U"abcde", 2, 4, U"", 0, 0, 3);
+    test(U"abcde", 2, 4, U"abcde", 3, 4, -2);
+    test(U"ABCde", 2, 4, U"abcde", 2, 4, -1);
+    }
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1 { "abcde", 5 };
+    static_assert ( sv1.compare(5, 1, "", 0, 0) == 0, "" );
+    static_assert ( sv1.compare(2, 4, "", 0, 0) > 0, "" );
+    static_assert ( sv1.compare(2, 4, "abcde", 3, 4) < 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.sv.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.sv.pass.cpp
new file mode 100644
index 0000000..7db327d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/compare.sv.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr int compare(basic_string_view str) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int sign ( int x ) { return x > 0 ? 1 : ( x < 0 ? -1 : 0 ); }
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv1,
+            std::basic_string_view<CharT> sv2, int expected ) {
+    assert ( sign( sv1.compare(sv2)) == sign(expected));
+}
+
+
+template<typename CharT>
+void test ( const CharT *s1, const CharT  *s2, int expected ) {
+    typedef std::basic_string_view<CharT> string_view_t;
+
+    string_view_t sv1 ( s1 );
+    string_view_t sv2 ( s2 );
+    test1(sv1, sv2, expected);
+}
+
+int main(int, char**) {
+
+    test("",                     "", 0);
+    test("",                     "abcde", -5);
+    test("",                     "abcdefghij", -10);
+    test("",                     "abcdefghijklmnopqrst", -20);
+    test("abcde",                "", 5);
+    test("abcde",                "abcde", 0);
+    test("abcde",                "abcdefghij", -5);
+    test("abcde",                "abcdefghijklmnopqrst", -15);
+    test("abcdefghij",           "", 10);
+    test("abcdefghij",           "abcde", 5);
+    test("abcdefghij",           "abcdefghij", 0);
+    test("abcdefghij",           "abcdefghijklmnopqrst", -10);
+    test("abcdefghijklmnopqrst", "", 20);
+    test("abcdefghijklmnopqrst", "abcde", 15);
+    test("abcdefghijklmnopqrst", "abcdefghij", 10);
+    test("abcdefghijklmnopqrst", "abcdefghijklmnopqrst", 0);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test(L"",                     L"", 0);
+    test(L"",                     L"abcde", -5);
+    test(L"",                     L"abcdefghij", -10);
+    test(L"",                     L"abcdefghijklmnopqrst", -20);
+    test(L"abcde",                L"", 5);
+    test(L"abcde",                L"abcde", 0);
+    test(L"abcde",                L"abcdefghij", -5);
+    test(L"abcde",                L"abcdefghijklmnopqrst", -15);
+    test(L"abcdefghij",           L"", 10);
+    test(L"abcdefghij",           L"abcde", 5);
+    test(L"abcdefghij",           L"abcdefghij", 0);
+    test(L"abcdefghij",           L"abcdefghijklmnopqrst", -10);
+    test(L"abcdefghijklmnopqrst", L"", 20);
+    test(L"abcdefghijklmnopqrst", L"abcde", 15);
+    test(L"abcdefghijklmnopqrst", L"abcdefghij", 10);
+    test(L"abcdefghijklmnopqrst", L"abcdefghijklmnopqrst", 0);
+#endif
+
+#if TEST_STD_VER >= 11
+    test(u"",                     u"", 0);
+    test(u"",                     u"abcde", -5);
+    test(u"",                     u"abcdefghij", -10);
+    test(u"",                     u"abcdefghijklmnopqrst", -20);
+    test(u"abcde",                u"", 5);
+    test(u"abcde",                u"abcde", 0);
+    test(u"abcde",                u"abcdefghij", -5);
+    test(u"abcde",                u"abcdefghijklmnopqrst", -15);
+    test(u"abcdefghij",           u"", 10);
+    test(u"abcdefghij",           u"abcde", 5);
+    test(u"abcdefghij",           u"abcdefghij", 0);
+    test(u"abcdefghij",           u"abcdefghijklmnopqrst", -10);
+    test(u"abcdefghijklmnopqrst", u"", 20);
+    test(u"abcdefghijklmnopqrst", u"abcde", 15);
+    test(u"abcdefghijklmnopqrst", u"abcdefghij", 10);
+    test(u"abcdefghijklmnopqrst", u"abcdefghijklmnopqrst", 0);
+
+    test(U"",                     U"", 0);
+    test(U"",                     U"abcde", -5);
+    test(U"",                     U"abcdefghij", -10);
+    test(U"",                     U"abcdefghijklmnopqrst", -20);
+    test(U"abcde",                U"", 5);
+    test(U"abcde",                U"abcde", 0);
+    test(U"abcde",                U"abcdefghij", -5);
+    test(U"abcde",                U"abcdefghijklmnopqrst", -15);
+    test(U"abcdefghij",           U"", 10);
+    test(U"abcdefghij",           U"abcde", 5);
+    test(U"abcdefghij",           U"abcdefghij", 0);
+    test(U"abcdefghij",           U"abcdefghijklmnopqrst", -10);
+    test(U"abcdefghijklmnopqrst", U"", 20);
+    test(U"abcdefghijklmnopqrst", U"abcde", 15);
+    test(U"abcdefghijklmnopqrst", U"abcdefghij", 10);
+    test(U"abcdefghijklmnopqrst", U"abcdefghijklmnopqrst", 0);
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1 { "abcde", 5 };
+    constexpr SV  sv2 { "abcde", 5 };
+    constexpr SV  sv3 { "edcba0", 6 };
+    static_assert ( sv1.compare(sv2) == 0, "" );
+    static_assert ( sv2.compare(sv1) == 0, "" );
+    static_assert ( sv3.compare(sv2)  > 0, "" );
+    static_assert ( sv2.compare(sv3)  < 0, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/copy.pass.cpp
new file mode 100644
index 0000000..54e185f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/copy.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// size_type copy(charT* s, size_type n, size_type pos = 0) const;
+
+// Throws: out_of_range if pos > size().
+// Remarks: Let rlen be the smaller of n and size() - pos.
+// Requires: [s, s+rlen) is a valid range.
+// Effects: Equivalent to std::copy_n(begin() + pos, rlen, s).
+// Returns: rlen.
+
+#include <string_view>
+#include <algorithm>
+#include <cassert>
+#include <stdexcept>
+
+#include "test_macros.h"
+
+template<typename CharT>
+void test1 ( std::basic_string_view<CharT> sv, size_t n, size_t pos ) {
+    const size_t rlen = std::min ( n, sv.size() - pos );
+
+    CharT *dest1 = new CharT [rlen + 1];    dest1[rlen] = 0;
+    CharT *dest2 = new CharT [rlen + 1];    dest2[rlen] = 0;
+
+    if (pos > sv.size()) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            sv.copy(dest1, n, pos);
+            assert(false);
+        } catch (const std::out_of_range&) {
+        } catch (...) {
+            assert(false);
+        }
+#endif
+    } else {
+        sv.copy(dest1, n, pos);
+        std::copy_n(sv.begin() + pos, rlen, dest2);
+        for ( size_t i = 0; i <= rlen; ++i )
+            assert ( dest1[i] == dest2[i] );
+    }
+    delete [] dest1;
+    delete [] dest2;
+}
+
+
+template<typename CharT>
+void test ( const CharT *s ) {
+    typedef std::basic_string_view<CharT> string_view_t;
+
+    string_view_t sv1 ( s );
+
+    test1(sv1,  0, 0);
+    test1(sv1,  1, 0);
+    test1(sv1, 20, 0);
+    test1(sv1, sv1.size(), 0);
+    test1(sv1, 20, string_view_t::npos);
+
+    test1(sv1,   0, 3);
+    test1(sv1,   2, 3);
+    test1(sv1, 100, 3);
+    test1(sv1, 100, string_view_t::npos);
+
+    test1(sv1, sv1.size(), string_view_t::npos);
+
+    test1(sv1, sv1.size() + 1, 0);
+    test1(sv1, sv1.size() + 1, 1);
+    test1(sv1, sv1.size() + 1, string_view_t::npos);
+}
+
+template<typename CharT>
+TEST_CONSTEXPR_CXX20 bool test_constexpr_copy(const CharT *abcde, const CharT *ghijk, const CharT *bcdjk)
+{
+    CharT buf[6] = {};
+    std::basic_string_view<CharT> lval(ghijk); lval.copy(buf, 6);
+    std::basic_string_view<CharT>(abcde).copy(buf, 3, 1);
+    assert(std::basic_string_view<CharT>(buf) == bcdjk);
+    return true;
+}
+
+int main(int, char**) {
+    test ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( "ABCDE");
+    test ( "a" );
+    test ( "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( L"ABCDE" );
+    test ( L"a" );
+    test ( L"" );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( u"ABCDE" );
+    test ( u"a" );
+    test ( u"" );
+
+    test ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( U"ABCDE" );
+    test ( U"a" );
+    test ( U"" );
+#endif
+
+    test_constexpr_copy("ABCDE", "GHIJK", "BCDJK");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_constexpr_copy(L"ABCDE", L"GHIJK", L"BCDJK");
+#endif
+#if TEST_STD_VER >= 11
+    test_constexpr_copy(u"ABCDE", u"GHIJK", u"BCDJK");
+    test_constexpr_copy(U"ABCDE", U"GHIJK", U"BCDJK");
+#endif
+#if TEST_STD_VER >= 17
+    test_constexpr_copy(u8"ABCDE", u8"GHIJK", u8"BCDJK");
+#endif
+#if TEST_STD_VER >= 20
+    static_assert(test_constexpr_copy("ABCDE", "GHIJK", "BCDJK"));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    static_assert(test_constexpr_copy(L"ABCDE", L"GHIJK", L"BCDJK"));
+#endif
+    static_assert(test_constexpr_copy(u"ABCDE", u"GHIJK", u"BCDJK"));
+    static_assert(test_constexpr_copy(U"ABCDE", U"GHIJK", U"BCDJK"));
+    static_assert(test_constexpr_copy(u8"ABCDE", u8"GHIJK", u8"BCDJK"));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/substr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/substr.pass.cpp
new file mode 100644
index 0000000..92f9d8c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.ops/substr.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// constexpr basic_string_view substr(size_type pos = 0, size_type n = npos) const;
+
+// Throws: out_of_range if pos > size().
+// Effects: Determines the effective length rlen of the string to reference as the smaller of n and size() - pos.
+// Returns: basic_string_view(data()+pos, rlen).
+
+#include <string_view>
+#include <algorithm>
+#include <stdexcept>
+#include <cassert>
+
+#include "test_macros.h"
+
+template<typename CharT>
+void test1(std::basic_string_view<CharT> sv, size_t n, size_t pos) {
+    std::basic_string_view<CharT> sv1;
+#ifdef TEST_HAS_NO_EXCEPTIONS
+    if (pos > sv.size())
+        return ;  // would throw if exceptions were enabled
+    sv1 = sv.substr(pos, n);
+#else
+    try {
+        sv1 = sv.substr(pos, n);
+        assert(pos <= sv.size());
+    }
+    catch (const std::out_of_range&) {
+        assert(pos > sv.size());
+        return ;
+    }
+#endif
+    const size_t rlen = std::min(n, sv.size() - pos);
+    assert (sv1.size() == rlen);
+    for (size_t i = 0; i < rlen; ++i)
+        assert(sv[pos+i] == sv1[i]);
+}
+
+
+template<typename CharT>
+void test ( const CharT *s ) {
+    typedef std::basic_string_view<CharT> string_view_t;
+
+    string_view_t sv1 ( s );
+
+    test1(sv1,  0, 0);
+    test1(sv1,  1, 0);
+    test1(sv1, 20, 0);
+    test1(sv1, sv1.size(), 0);
+
+    test1(sv1,   0, 3);
+    test1(sv1,   2, 3);
+    test1(sv1, 100, 3);
+
+    test1(sv1, 0, string_view_t::npos);
+    test1(sv1, 2, string_view_t::npos);
+    test1(sv1, sv1.size(), string_view_t::npos);
+
+    test1(sv1, sv1.size() + 1, 0);
+    test1(sv1, sv1.size() + 1, 1);
+    test1(sv1, sv1.size() + 1, string_view_t::npos);
+}
+
+int main(int, char**) {
+    test ( "ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( "ABCDE");
+    test ( "a" );
+    test ( "" );
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test ( L"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( L"ABCDE" );
+    test ( L"a" );
+    test ( L"" );
+#endif
+
+#if TEST_STD_VER >= 11
+    test ( u"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( u"ABCDE" );
+    test ( u"a" );
+    test ( u"" );
+
+    test ( U"ABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDEABCDE" );
+    test ( U"ABCDE" );
+    test ( U"a" );
+    test ( U"" );
+#endif
+
+#if TEST_STD_VER > 11
+    {
+    constexpr std::string_view sv1 { "ABCDE", 5 };
+
+    {
+    constexpr std::string_view sv2 = sv1.substr ( 0, 3 );
+    static_assert ( sv2.size() == 3, "" );
+    static_assert ( sv2[0] == 'A', "" );
+    static_assert ( sv2[1] == 'B', "" );
+    static_assert ( sv2[2] == 'C', "" );
+    }
+
+    {
+    constexpr std::string_view sv2 = sv1.substr ( 3, 0 );
+    static_assert ( sv2.size() == 0, "" );
+    }
+
+    {
+    constexpr std::string_view sv2 = sv1.substr ( 3, 3 );
+    static_assert ( sv2.size() == 2, "" );
+    static_assert ( sv2[0] == 'D', "" );
+    static_assert ( sv2[1] == 'E', "" );
+    }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.synop/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.synop/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..45edec7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.synop/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <string_view>
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.char.pass.cpp
new file mode 100644
index 0000000..16ae834
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.char.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string_view>
+
+//   constexpr bool contains(charT x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    using SV = std::string_view;
+
+    SV sv1 {};
+    SV sv2 {"abcde", 5};
+
+    ASSERT_NOEXCEPT(sv1.contains('e'));
+
+    assert(!sv1.contains('c'));
+    assert(!sv1.contains('e'));
+    assert(!sv1.contains('x'));
+    assert( sv2.contains('c'));
+    assert( sv2.contains('e'));
+    assert(!sv2.contains('x'));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.ptr.pass.cpp
new file mode 100644
index 0000000..85a86e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.ptr.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string_view>
+
+//   constexpr bool contains(const CharT *x) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    using SV = std::string_view;
+
+    const char* s = "abcde";
+    SV sv0;
+    SV sv1 {s + 4, 1};
+    SV sv3 {s + 2, 3};
+    SV svNot {"xyz", 3};
+
+    assert( sv0.contains(""));
+    assert(!sv0.contains("e"));
+
+    assert( sv1.contains(""));
+    assert(!sv1.contains("d"));
+    assert( sv1.contains("e"));
+    assert(!sv1.contains("de"));
+    assert(!sv1.contains("cd"));
+    assert(!sv1.contains("cde"));
+    assert(!sv1.contains("bcde"));
+    assert(!sv1.contains("abcde"));
+    assert(!sv1.contains("xyz"));
+
+    assert( sv3.contains(""));
+    assert( sv3.contains("d"));
+    assert( sv3.contains("e"));
+    assert( sv3.contains("de"));
+    assert( sv3.contains("cd"));
+    assert(!sv3.contains("ce"));
+    assert( sv3.contains("cde"));
+    assert(!sv3.contains("edc"));
+    assert(!sv3.contains("bcde"));
+    assert(!sv3.contains("abcde"));
+    assert(!sv3.contains("xyz"));
+
+    assert( svNot.contains(""));
+    assert(!svNot.contains("d"));
+    assert(!svNot.contains("e"));
+    assert(!svNot.contains("de"));
+    assert(!svNot.contains("cd"));
+    assert(!svNot.contains("cde"));
+    assert(!svNot.contains("bcde"));
+    assert(!svNot.contains("abcde"));
+    assert( svNot.contains("xyz"));
+    assert(!svNot.contains("zyx"));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.string_view.pass.cpp
new file mode 100644
index 0000000..a4bdc7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/contains.string_view.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <string_view>
+
+//   constexpr bool contains(string_view x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test()
+{
+    using SV = std::string_view;
+
+    const char* s = "abcde";
+    SV sv0;
+    SV sv1 {s + 1, 1};
+    SV sv2 {s + 1, 2};
+    SV sv3 {s + 1, 3};
+    SV sv4 {s + 1, 4};
+    SV sv5 {s    , 5};
+    SV svNot  {"xyz", 3};
+    SV svNot2 {"bd" , 2};
+    SV svNot3 {"dcb", 3};
+
+    ASSERT_NOEXCEPT(sv0.contains(sv0));
+
+    assert( sv0.contains(sv0));
+    assert(!sv0.contains(sv1));
+
+    assert( sv1.contains(sv0));
+    assert( sv1.contains(sv1));
+    assert(!sv1.contains(sv2));
+    assert(!sv1.contains(sv3));
+    assert(!sv1.contains(sv4));
+    assert(!sv1.contains(sv5));
+    assert(!sv1.contains(svNot));
+    assert(!sv1.contains(svNot2));
+    assert(!sv1.contains(svNot3));
+
+    assert( sv3.contains(sv0));
+    assert( sv3.contains(sv1));
+    assert( sv3.contains(sv2));
+    assert( sv3.contains(sv3));
+    assert(!sv3.contains(sv4));
+    assert(!sv3.contains(sv5));
+    assert(!sv3.contains(svNot));
+    assert(!sv3.contains(svNot2));
+    assert(!sv3.contains(svNot3));
+
+    assert( sv5.contains(sv0));
+    assert( sv5.contains(sv1));
+    assert( sv5.contains(sv2));
+    assert( sv5.contains(sv3));
+    assert( sv5.contains(sv4));
+    assert( sv5.contains(sv5));
+    assert(!sv5.contains(svNot));
+    assert(!sv5.contains(svNot2));
+    assert(!sv5.contains(svNot3));
+
+    assert( svNot.contains(sv0));
+    assert(!svNot.contains(sv1));
+    assert(!svNot.contains(sv2));
+    assert(!svNot.contains(sv3));
+    assert(!svNot.contains(sv4));
+    assert(!svNot.contains(sv5));
+    assert( svNot.contains(svNot));
+    assert(!svNot.contains(svNot2));
+    assert(!svNot.contains(svNot3));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.char.pass.cpp
new file mode 100644
index 0000000..d1e9493
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.char.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//   constexpr bool ends_with(charT x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view SV;
+    SV  sv1 {};
+    SV  sv2 { "abcde", 5 };
+
+    ASSERT_NOEXCEPT(sv1.ends_with('e'));
+
+    assert (!sv1.ends_with('e'));
+    assert (!sv1.ends_with('x'));
+    assert ( sv2.ends_with('e'));
+    assert (!sv2.ends_with('x'));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1 {};
+    constexpr SV  sv2 { "abcde", 5 };
+    static_assert (!sv1.ends_with('e'), "" );
+    static_assert (!sv1.ends_with('x'), "" );
+    static_assert ( sv2.ends_with('e'), "" );
+    static_assert (!sv2.ends_with('x'), "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.ptr.pass.cpp
new file mode 100644
index 0000000..0fea0ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.ptr.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//   constexpr bool ends_with(const CharT *x) const;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view SV;
+    const char *s = "abcde";
+    SV  sv0 {};
+    SV  sv1 { s + 4, 1 };
+    SV  sv2 { s + 3, 2 };
+    SV  svNot {"def", 3 };
+
+    LIBCPP_ASSERT_NOEXCEPT(sv0.ends_with(""));
+
+    assert ( sv0.ends_with(""));
+    assert (!sv0.ends_with("e"));
+
+    assert ( sv1.ends_with(""));
+    assert ( sv1.ends_with("e"));
+    assert (!sv1.ends_with("de"));
+    assert (!sv1.ends_with("cde"));
+    assert (!sv1.ends_with("bcde"));
+    assert (!sv1.ends_with("abcde"));
+    assert (!sv1.ends_with("def"));
+
+    assert ( sv2.ends_with(""));
+    assert ( sv2.ends_with("e"));
+    assert ( sv2.ends_with("de"));
+    assert (!sv2.ends_with("cde"));
+    assert (!sv2.ends_with("bcde"));
+    assert (!sv2.ends_with("abcde"));
+    assert (!sv2.ends_with("def"));
+
+    assert ( svNot.ends_with(""));
+    assert (!svNot.ends_with("e"));
+    assert (!svNot.ends_with("de"));
+    assert (!svNot.ends_with("cde"));
+    assert (!svNot.ends_with("bcde"));
+    assert (!svNot.ends_with("abcde"));
+    assert ( svNot.ends_with("def"));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr const char *s = "abcde";
+    constexpr SV  sv0 {};
+    constexpr SV  sv1 { s + 4, 1 };
+    constexpr SV  sv2 { s + 3, 2 };
+    constexpr SV  svNot {"def", 3 };
+
+    static_assert ( sv0.ends_with(""), "" );
+    static_assert (!sv0.ends_with("e"), "" );
+
+    static_assert ( sv1.ends_with(""), "" );
+    static_assert ( sv1.ends_with("e"), "" );
+    static_assert (!sv1.ends_with("de"), "" );
+    static_assert (!sv1.ends_with("cde"), "" );
+    static_assert (!sv1.ends_with("bcde"), "" );
+    static_assert (!sv1.ends_with("abcde"), "" );
+    static_assert (!sv1.ends_with("def"), "" );
+
+    static_assert ( sv2.ends_with(""), "" );
+    static_assert ( sv2.ends_with("e"), "" );
+    static_assert ( sv2.ends_with("de"), "" );
+    static_assert (!sv2.ends_with("cde"), "" );
+    static_assert (!sv2.ends_with("bcde"), "" );
+    static_assert (!sv2.ends_with("abcde"), "" );
+    static_assert (!sv2.ends_with("def"), "" );
+
+    static_assert ( svNot.ends_with(""), "" );
+    static_assert (!svNot.ends_with("e"), "" );
+    static_assert (!svNot.ends_with("de"), "" );
+    static_assert (!svNot.ends_with("cde"), "" );
+    static_assert (!svNot.ends_with("bcde"), "" );
+    static_assert (!svNot.ends_with("abcde"), "" );
+    static_assert ( svNot.ends_with("def"), "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.string_view.pass.cpp
new file mode 100644
index 0000000..347ba7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/ends_with.string_view.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//   constexpr bool ends_with(string_view x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view SV;
+    const char *s = "abcde";
+    SV  sv0;
+    SV  sv1 { s + 4, 1 };
+    SV  sv2 { s + 3, 2 };
+    SV  sv3 { s + 2, 3 };
+    SV  sv4 { s + 1, 4 };
+    SV  sv5 { s    , 5 };
+    SV  svNot {"def", 3 };
+
+    ASSERT_NOEXCEPT(sv0.ends_with(sv0));
+
+    assert ( sv0.ends_with(sv0));
+    assert (!sv0.ends_with(sv1));
+
+    assert ( sv1.ends_with(sv0));
+    assert ( sv1.ends_with(sv1));
+    assert (!sv1.ends_with(sv2));
+    assert (!sv1.ends_with(sv3));
+    assert (!sv1.ends_with(sv4));
+    assert (!sv1.ends_with(sv5));
+    assert (!sv1.ends_with(svNot));
+
+    assert ( sv2.ends_with(sv0));
+    assert ( sv2.ends_with(sv1));
+    assert ( sv2.ends_with(sv2));
+    assert (!sv2.ends_with(sv3));
+    assert (!sv2.ends_with(sv4));
+    assert (!sv2.ends_with(sv5));
+    assert (!sv2.ends_with(svNot));
+
+    assert ( svNot.ends_with(sv0));
+    assert (!svNot.ends_with(sv1));
+    assert (!svNot.ends_with(sv2));
+    assert (!svNot.ends_with(sv3));
+    assert (!svNot.ends_with(sv4));
+    assert (!svNot.ends_with(sv5));
+    assert ( svNot.ends_with(svNot));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr const char *s = "abcde";
+    constexpr SV  sv0 {};
+    constexpr SV  sv1 { s + 4, 1 };
+    constexpr SV  sv2 { s + 3, 2 };
+    constexpr SV  sv3 { s + 2, 3 };
+    constexpr SV  sv4 { s + 1, 4 };
+    constexpr SV  sv5 { s,     5 };
+    constexpr SV  svNot {"def", 3 };
+
+    static_assert ( sv0.ends_with(sv0), "" );
+    static_assert (!sv0.ends_with(sv1), "" );
+
+    static_assert ( sv1.ends_with(sv0), "" );
+    static_assert ( sv1.ends_with(sv1), "" );
+    static_assert (!sv1.ends_with(sv2), "" );
+    static_assert (!sv1.ends_with(sv3), "" );
+    static_assert (!sv1.ends_with(sv4), "" );
+    static_assert (!sv1.ends_with(sv5), "" );
+    static_assert (!sv1.ends_with(svNot), "" );
+
+    static_assert ( sv2.ends_with(sv0), "" );
+    static_assert ( sv2.ends_with(sv1), "" );
+    static_assert ( sv2.ends_with(sv2), "" );
+    static_assert (!sv2.ends_with(sv3), "" );
+    static_assert (!sv2.ends_with(sv4), "" );
+    static_assert (!sv2.ends_with(sv5), "" );
+    static_assert (!sv2.ends_with(svNot), "" );
+
+    static_assert ( svNot.ends_with(sv0), "" );
+    static_assert (!svNot.ends_with(sv1), "" );
+    static_assert (!svNot.ends_with(sv2), "" );
+    static_assert (!svNot.ends_with(sv3), "" );
+    static_assert (!svNot.ends_with(sv4), "" );
+    static_assert (!svNot.ends_with(sv5), "" );
+    static_assert ( svNot.ends_with(svNot), "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp
new file mode 100644
index 0000000..1755806
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.char.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//   constexpr bool starts_with(charT x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view SV;
+    SV  sv1 {};
+    SV  sv2 { "abcde", 5 };
+
+    ASSERT_NOEXCEPT(sv1.starts_with('e'));
+
+    assert (!sv1.starts_with('a'));
+    assert (!sv1.starts_with('x'));
+    assert ( sv2.starts_with('a'));
+    assert (!sv2.starts_with('x'));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr SV  sv1 {};
+    constexpr SV  sv2 { "abcde", 5 };
+    static_assert (!sv1.starts_with('a'), "" );
+    static_assert (!sv1.starts_with('x'), "" );
+    static_assert ( sv2.starts_with('a'), "" );
+    static_assert (!sv2.starts_with('x'), "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.ptr.pass.cpp
new file mode 100644
index 0000000..464606f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.ptr.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//   constexpr bool starts_with(string_view x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view SV;
+    const char *s = "abcde";
+    SV  sv0 {};
+    SV  sv1 { s, 1 };
+    SV  sv2 { s, 2 };
+    SV  svNot {"def", 3 };
+
+    LIBCPP_ASSERT_NOEXCEPT(sv0.starts_with(""));
+
+    assert ( sv0.starts_with(""));
+    assert (!sv0.starts_with("a"));
+
+    assert ( sv1.starts_with(""));
+    assert ( sv1.starts_with("a"));
+    assert (!sv1.starts_with("ab"));
+    assert (!sv1.starts_with("abc"));
+    assert (!sv1.starts_with("abcd"));
+    assert (!sv1.starts_with("abcde"));
+    assert (!sv1.starts_with("def"));
+
+    assert ( sv2.starts_with(s + 5));
+    assert ( sv2.starts_with("a"));
+    assert ( sv2.starts_with("ab"));
+    assert (!sv2.starts_with("abc"));
+    assert (!sv2.starts_with("abcd"));
+    assert (!sv2.starts_with("abcde"));
+    assert (!sv2.starts_with("def"));
+
+    assert ( svNot.starts_with(""));
+    assert (!svNot.starts_with("a"));
+    assert (!svNot.starts_with("ab"));
+    assert (!svNot.starts_with("abc"));
+    assert (!svNot.starts_with("abcd"));
+    assert (!svNot.starts_with("abcde"));
+    assert ( svNot.starts_with("def"));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr const char *s = "abcde";
+    constexpr SV  sv0 {};
+    constexpr SV  sv1 { s, 1 };
+    constexpr SV  sv2 { s, 2 };
+    constexpr SV  svNot {"def", 3 };
+
+    static_assert ( sv0.starts_with(""), "" );
+    static_assert (!sv0.starts_with("a"), "" );
+
+    static_assert ( sv1.starts_with(""), "" );
+    static_assert ( sv1.starts_with("a"), "" );
+    static_assert (!sv1.starts_with("ab"), "" );
+    static_assert (!sv1.starts_with("abc"), "" );
+    static_assert (!sv1.starts_with("abcd"), "" );
+    static_assert (!sv1.starts_with("abcde"), "" );
+    static_assert (!sv1.starts_with("def"), "" );
+
+    static_assert ( sv2.starts_with(s + 5), "" );
+    static_assert ( sv2.starts_with("a"), "" );
+    static_assert ( sv2.starts_with("ab"), "" );
+    static_assert (!sv2.starts_with("abc"), "" );
+    static_assert (!sv2.starts_with("abcd"), "" );
+    static_assert (!sv2.starts_with("abcde"), "" );
+    static_assert (!sv2.starts_with("def"), "" );
+
+    static_assert ( svNot.starts_with(""), "" );
+    static_assert (!svNot.starts_with("a"), "" );
+    static_assert (!svNot.starts_with("ab"), "" );
+    static_assert (!svNot.starts_with("abc"), "" );
+    static_assert (!svNot.starts_with("abcd"), "" );
+    static_assert (!svNot.starts_with("abcde"), "" );
+    static_assert ( svNot.starts_with("def"), "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp
new file mode 100644
index 0000000..ebeacaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string.view.template/starts_with.string_view.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string_view>
+
+//   constexpr bool starts_with(string_view x) const noexcept;
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+#include "constexpr_char_traits.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::string_view SV;
+    const char *s = "abcde";
+    SV  sv0 {};
+    SV  sv1 { s, 1 };
+    SV  sv2 { s, 2 };
+    SV  sv3 { s, 3 };
+    SV  sv4 { s, 4 };
+    SV  sv5 { s, 5 };
+    SV  svNot {"def", 3 };
+
+    ASSERT_NOEXCEPT(sv0.starts_with(sv0));
+
+    assert ( sv0.starts_with(sv0));
+    assert (!sv0.starts_with(sv1));
+
+    assert ( sv1.starts_with(sv0));
+    assert ( sv1.starts_with(sv1));
+    assert (!sv1.starts_with(sv2));
+    assert (!sv1.starts_with(sv3));
+    assert (!sv1.starts_with(sv4));
+    assert (!sv1.starts_with(sv5));
+    assert (!sv1.starts_with(svNot));
+
+    assert ( sv2.starts_with(sv0));
+    assert ( sv2.starts_with(sv1));
+    assert ( sv2.starts_with(sv2));
+    assert (!sv2.starts_with(sv3));
+    assert (!sv2.starts_with(sv4));
+    assert (!sv2.starts_with(sv5));
+    assert (!sv2.starts_with(svNot));
+
+    assert ( svNot.starts_with(sv0));
+    assert (!svNot.starts_with(sv1));
+    assert (!svNot.starts_with(sv2));
+    assert (!svNot.starts_with(sv3));
+    assert (!svNot.starts_with(sv4));
+    assert (!svNot.starts_with(sv5));
+    assert ( svNot.starts_with(svNot));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::basic_string_view<char, constexpr_char_traits<char>> SV;
+    constexpr const char *s = "abcde";
+    constexpr SV  sv0 {};
+    constexpr SV  sv1 { s, 1 };
+    constexpr SV  sv2 { s, 2 };
+    constexpr SV  sv3 { s, 3 };
+    constexpr SV  sv4 { s, 4 };
+    constexpr SV  sv5 { s, 5 };
+    constexpr SV  svNot {"def", 3 };
+
+    static_assert ( sv0.starts_with(sv0), "" );
+    static_assert (!sv0.starts_with(sv1), "" );
+
+    static_assert ( sv1.starts_with(sv0), "" );
+    static_assert ( sv1.starts_with(sv1), "" );
+    static_assert (!sv1.starts_with(sv2), "" );
+    static_assert (!sv1.starts_with(sv3), "" );
+    static_assert (!sv1.starts_with(sv4), "" );
+    static_assert (!sv1.starts_with(sv5), "" );
+    static_assert (!sv1.starts_with(svNot), "" );
+
+    static_assert ( sv2.starts_with(sv0), "" );
+    static_assert ( sv2.starts_with(sv1), "" );
+    static_assert ( sv2.starts_with(sv2), "" );
+    static_assert (!sv2.starts_with(sv3), "" );
+    static_assert (!sv2.starts_with(sv4), "" );
+    static_assert (!sv2.starts_with(sv5), "" );
+    static_assert (!sv2.starts_with(svNot), "" );
+
+    static_assert ( svNot.starts_with(sv0), "" );
+    static_assert (!svNot.starts_with(sv1), "" );
+    static_assert (!svNot.starts_with(sv2), "" );
+    static_assert (!svNot.starts_with(sv3), "" );
+    static_assert (!svNot.starts_with(sv4), "" );
+    static_assert (!svNot.starts_with(sv5), "" );
+    static_assert ( svNot.starts_with(svNot), "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp
new file mode 100644
index 0000000..74ae456
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string_view.literals/literal.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Note: libc++ supports string_view before C++17, but literals were introduced in C++14
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: !stdlib=libc++ && c++14
+
+#include <string_view>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_CHAR8_T
+    typedef std::u8string_view u8string_view;
+#else
+    typedef std::string_view   u8string_view;
+#endif
+
+int main(int, char**) {
+    {
+        using namespace std::literals::string_view_literals;
+
+        ASSERT_SAME_TYPE(decltype(  "Hi"sv), std::string_view);
+        ASSERT_SAME_TYPE(decltype(u8"Hi"sv), u8string_view);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        ASSERT_SAME_TYPE(decltype( L"Hi"sv), std::wstring_view);
+#endif
+        ASSERT_SAME_TYPE(decltype( u"Hi"sv), std::u16string_view);
+        ASSERT_SAME_TYPE(decltype( U"Hi"sv), std::u32string_view);
+
+        std::string_view foo;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        std::wstring_view Lfoo;
+#endif
+        u8string_view u8foo;
+        std::u16string_view ufoo;
+        std::u32string_view Ufoo;
+
+        foo  =    ""sv;     assert(  foo.size() == 0);
+        u8foo = u8""sv;     assert(u8foo.size() == 0);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        Lfoo  =  L""sv;     assert( Lfoo.size() == 0);
+#endif
+        ufoo  =  u""sv;     assert( ufoo.size() == 0);
+        Ufoo  =  U""sv;     assert( Ufoo.size() == 0);
+
+        foo   =   " "sv;    assert(  foo.size() == 1);
+        u8foo = u8" "sv;    assert(u8foo.size() == 1);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        Lfoo  =  L" "sv;    assert( Lfoo.size() == 1);
+#endif
+        ufoo  =  u" "sv;    assert( ufoo.size() == 1);
+        Ufoo  =  U" "sv;    assert( Ufoo.size() == 1);
+
+        foo   =   "ABC"sv;  assert(  foo ==   "ABC");   assert(  foo == std::string_view   (  "ABC"));
+        u8foo = u8"ABC"sv;  assert(u8foo == u8"ABC");   assert(u8foo == u8string_view      (u8"ABC"));
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        Lfoo  =  L"ABC"sv;  assert( Lfoo ==  L"ABC");   assert( Lfoo == std::wstring_view  ( L"ABC"));
+#endif
+        ufoo  =  u"ABC"sv;  assert( ufoo ==  u"ABC");   assert( ufoo == std::u16string_view( u"ABC"));
+        Ufoo  =  U"ABC"sv;  assert( Ufoo ==  U"ABC");   assert( Ufoo == std::u32string_view( U"ABC"));
+
+        static_assert(  "ABC"sv.size() == 3, "");
+        static_assert(u8"ABC"sv.size() == 3, "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        static_assert( L"ABC"sv.size() == 3, "");
+#endif
+        static_assert( u"ABC"sv.size() == 3, "");
+        static_assert( U"ABC"sv.size() == 3, "");
+
+        ASSERT_NOEXCEPT(  "ABC"sv);
+        ASSERT_NOEXCEPT(u8"ABC"sv);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        ASSERT_NOEXCEPT( L"ABC"sv);
+#endif
+        ASSERT_NOEXCEPT( u"ABC"sv);
+        ASSERT_NOEXCEPT( U"ABC"sv);
+    }
+    {
+        using namespace std::literals;
+        std::string_view foo = ""sv;
+        assert(foo.length() == 0);
+    }
+    {
+        using namespace std;
+        std::string_view foo = ""sv;
+        assert(foo.length() == 0);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/string_view.literals/literal.verify.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/string_view.literals/literal.verify.cpp
new file mode 100644
index 0000000..a5b1d4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/string_view.literals/literal.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Note: libc++ supports string_view before C++17, but literals were introduced in C++14
+// UNSUPPORTED: c++03, c++11
+// UNSUPPORTED: !stdlib=libc++ && c++14
+
+#include <string_view>
+
+void f() {
+  {
+    using std::string_view;
+    string_view foo = ""sv; // expected-error {{no matching literal operator}}
+  }
+  {
+    std::string_view foo = ""sv; // expected-error {{no matching literal operator}}
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/traits_mismatch.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/traits_mismatch.compile.fail.cpp
new file mode 100644
index 0000000..5075642
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/traits_mismatch.compile.fail.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+//   The string_views's value type must be the same as the traits's char_type
+
+#include <string_view>
+
+int main(int, char**)
+{
+    std::basic_string_view<char, std::char_traits<wchar_t>> s;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/trivially_copyable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/trivially_copyable.compile.pass.cpp
new file mode 100644
index 0000000..6127d06
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/trivially_copyable.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// P2251 was voted into C++23, but is supported even in C++17 mode by all vendors.
+
+// <string_view>
+
+#include <string_view>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_trivially_copyable<std::basic_string_view<char> >::value, "");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::is_trivially_copyable<std::basic_string_view<wchar_t> >::value, "");
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+static_assert(std::is_trivially_copyable<std::basic_string_view<char8_t> >::value, "");
+#endif
+static_assert(std::is_trivially_copyable<std::basic_string_view<char16_t> >::value, "");
+static_assert(std::is_trivially_copyable<std::basic_string_view<char32_t> >::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/strings/string.view/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/string.view/types.pass.cpp
new file mode 100644
index 0000000..f952f20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/string.view/types.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
+
+// <string_view>
+
+// Test nested types and default template args:
+
+// template<class charT, class traits = char_traits<charT>>
+// {
+// public:
+//     // types:
+//     using traits_type               = traits;
+//     using value_type                = charT;
+//     using pointer                   = value_type*;
+//     using const_pointer             = const value_type*;
+//     using reference                 = value_type&;
+//     using const_reference           = const value_type&;
+//     using const_iterator            = implementation-defined ; // see 24.4.2.2
+//     using iterator                  = const_iterator;
+//     using const_reverse_iterator    = reverse_iterator<const_iterator>;
+//     using iterator                  = const_reverse_iterator;
+//     using size_type                 = size_t;
+//     using difference_type           = ptrdiff_t;
+//     static constexpr size_type npos = size_type(-1);
+//
+// };
+
+#include <string_view>
+#include <iterator>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Traits>
+void
+test()
+{
+    typedef std::basic_string_view<typename Traits::char_type, Traits> S;
+
+    static_assert((std::is_same<typename S::traits_type,     Traits>::value), "");
+    static_assert((std::is_same<typename S::value_type,      typename Traits::char_type>::value), "");
+    static_assert((std::is_same<typename S::size_type,       std::size_t>::value), "");
+    static_assert((std::is_same<typename S::difference_type, ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename S::reference,             typename S::value_type&>::value), "");
+    static_assert((std::is_same<typename S::const_reference, const typename S::value_type&>::value), "");
+    static_assert((std::is_same<typename S::pointer,               typename S::value_type*>::value), "");
+    static_assert((std::is_same<typename S::const_pointer,   const typename S::value_type*>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename S::iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename std::iterator_traits<typename S::const_iterator>::iterator_category,
+        std::random_access_iterator_tag>::value), "");
+    static_assert((std::is_same<
+        typename S::reverse_iterator,
+        std::reverse_iterator<typename S::iterator> >::value), "");
+    static_assert((std::is_same<
+        typename S::const_reverse_iterator,
+        std::reverse_iterator<typename S::const_iterator> >::value), "");
+    static_assert(S::npos == -1, "");
+    static_assert((std::is_same<typename S::iterator,         typename S::const_iterator>::value), "");
+    static_assert((std::is_same<typename S::reverse_iterator, typename S::const_reverse_iterator>::value), "");
+}
+
+int main(int, char**)
+{
+    test<std::char_traits<char> >();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<std::char_traits<wchar_t> >();
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+    test<std::char_traits<char8_t> >();
+#endif
+    static_assert((std::is_same<std::basic_string_view<char>::traits_type,
+                                std::char_traits<char> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/strings.erasure/erase.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/strings.erasure/erase.pass.cpp
new file mode 100644
index 0000000..aa397ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/strings.erasure/erase.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template <class charT, class traits, class Allocator, class U>
+//   typename basic_string<charT, traits, Allocator>::size_type
+//   erase(basic_string<charT, traits, Allocator>& c, const U& value);
+
+#include <string>
+#include <optional>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class U>
+void test0(S s, U val, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase(s, val)));
+  assert(expected_erased_count == std::erase(s, val));
+  LIBCPP_ASSERT(s.__invariants());
+  assert(s == expected);
+}
+
+template <class S>
+void test()
+{
+
+  test0(S(""), 'a', S(""), 0);
+
+  test0(S("a"), 'a', S(""), 1);
+  test0(S("a"), 'b', S("a"), 0);
+
+  test0(S("ab"), 'a', S("b"), 1);
+  test0(S("ab"), 'b', S("a"), 1);
+  test0(S("ab"), 'c', S("ab"), 0);
+  test0(S("aa"), 'a', S(""), 2);
+  test0(S("aa"), 'c', S("aa"), 0);
+
+  test0(S("abc"), 'a', S("bc"), 1);
+  test0(S("abc"), 'b', S("ac"), 1);
+  test0(S("abc"), 'c', S("ab"), 1);
+  test0(S("abc"), 'd', S("abc"), 0);
+
+  test0(S("aab"), 'a', S("b"), 2);
+  test0(S("aab"), 'b', S("aa"), 1);
+  test0(S("aab"), 'c', S("aab"), 0);
+  test0(S("abb"), 'a', S("bb"), 1);
+  test0(S("abb"), 'b', S("a"), 2);
+  test0(S("abb"), 'c', S("abb"), 0);
+  test0(S("aaa"), 'a', S(""), 3);
+  test0(S("aaa"), 'b', S("aaa"), 0);
+
+  //  Test cross-type erasure
+  using opt = std::optional<typename S::value_type>;
+  test0(S("aba"), opt(), S("aba"), 0);
+  test0(S("aba"), opt('a'), S("b"), 2);
+  test0(S("aba"), opt('b'), S("aa"), 1);
+  test0(S("aba"), opt('c'), S("aba"), 0);
+}
+
+int main(int, char**)
+{
+    test<std::string>();
+    test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>> ();
+    test<std::basic_string<char, std::char_traits<char>, test_allocator<char>>> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp
new file mode 100644
index 0000000..1957451
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/strings.erasure/erase_if.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <string>
+
+// template <class charT, class traits, class Allocator, class Predicate>
+//   typename basic_string<charT, traits, Allocator>::size_type
+//   erase_if(basic_string<charT, traits, Allocator>& c, Predicate pred);
+
+#include <string>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+template <class S, class Pred>
+void test0(S s, Pred p, S expected, size_t expected_erased_count) {
+  ASSERT_SAME_TYPE(typename S::size_type, decltype(std::erase_if(s, p)));
+  assert(expected_erased_count == std::erase_if(s, p));
+  LIBCPP_ASSERT(s.__invariants());
+  assert(s == expected);
+}
+
+template <typename S>
+void test()
+{
+    auto isA = [](auto ch) { return ch == 'a';};
+    auto isB = [](auto ch) { return ch == 'b';};
+    auto isC = [](auto ch) { return ch == 'c';};
+    auto isD = [](auto ch) { return ch == 'd';};
+    auto True  = [](auto) { return true; };
+    auto False = [](auto) { return false; };
+
+    test0(S(""), isA, S(""), 0);
+
+    test0(S("a"), isA, S(""), 1);
+    test0(S("a"), isB, S("a"), 0);
+
+    test0(S("ab"), isA, S("b"), 1);
+    test0(S("ab"), isB, S("a"), 1);
+    test0(S("ab"), isC, S("ab"), 0);
+    test0(S("aa"), isA, S(""), 2);
+    test0(S("aa"), isC, S("aa"), 0);
+
+    test0(S("abc"), isA, S("bc"), 1);
+    test0(S("abc"), isB, S("ac"), 1);
+    test0(S("abc"), isC, S("ab"), 1);
+    test0(S("abc"), isD, S("abc"), 0);
+
+    test0(S("aab"), isA, S("b"), 2);
+    test0(S("aab"), isB, S("aa"), 1);
+    test0(S("aab"), isC, S("aab"), 0);
+    test0(S("abb"), isA, S("bb"), 1);
+    test0(S("abb"), isB, S("a"), 2);
+    test0(S("abb"), isC, S("abb"), 0);
+    test0(S("aaa"), isA, S(""), 3);
+    test0(S("aaa"), isB, S("aaa"), 0);
+
+    test0(S("aba"), False, S("aba"), 0);
+    test0(S("aba"), True, S(""), 3);
+}
+
+int main(int, char**)
+{
+    test<std::string>();
+    test<std::basic_string<char, std::char_traits<char>, min_allocator<char>>> ();
+    test<std::basic_string<char, std::char_traits<char>, test_allocator<char>>> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/strings/strings.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/strings/strings.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/strings/strings.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async.pass.cpp
new file mode 100644
index 0000000..b40fedf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// ALLOW_RETRIES: 3
+
+// <future>
+
+// template <class F, class... Args>
+//     future<typename result_of<F(Args...)>::type>
+//     async(F&& f, Args&&... args);
+
+// template <class F, class... Args>
+//     future<typename result_of<F(Args...)>::type>
+//     async(launch policy, F&& f, Args&&... args);
+
+
+#include <atomic>
+#include <cassert>
+#include <chrono>
+#include <future>
+#include <memory>
+
+#include "test_macros.h"
+
+typedef std::chrono::high_resolution_clock Clock;
+typedef std::chrono::milliseconds ms;
+
+std::atomic_bool invoked{false};
+
+int f0()
+{
+    invoked = true;
+    std::this_thread::sleep_for(ms(200));
+    return 3;
+}
+
+int i = 0;
+
+int& f1()
+{
+    invoked = true;
+    std::this_thread::sleep_for(ms(200));
+    return i;
+}
+
+void f2()
+{
+    invoked = true;
+    std::this_thread::sleep_for(ms(200));
+}
+
+std::unique_ptr<int> f3(int j)
+{
+    invoked = true;
+    std::this_thread::sleep_for(ms(200));
+    return std::unique_ptr<int>(new int(j));
+}
+
+std::unique_ptr<int> f4(std::unique_ptr<int>&& p)
+{
+    invoked = true;
+    std::this_thread::sleep_for(ms(200));
+    return std::move(p);
+}
+
+void f5(int j)
+{
+    std::this_thread::sleep_for(ms(200));
+    ((void)j);
+    TEST_THROW(j);
+}
+
+template <class Ret, class CheckLamdba, class ...Args>
+void test(CheckLamdba&& getAndCheckFn, bool IsDeferred, Args&&... args) {
+    // Reset global state.
+    invoked = false;
+
+    // Create the future and wait
+    std::future<Ret> f = std::async(std::forward<Args>(args)...);
+    std::this_thread::sleep_for(ms(300));
+
+    // Check that deferred async's have not invoked the function.
+    assert(invoked == !IsDeferred);
+
+    // Time the call to f.get() and check that the returned value matches
+    // what is expected.
+    Clock::time_point t0 = Clock::now();
+    assert(getAndCheckFn(f));
+    Clock::time_point t1 = Clock::now();
+
+    // If the async is deferred it should take more than 100ms, otherwise
+    // it should take less than 100ms.
+    if (IsDeferred) {
+        assert(t1-t0 > ms(100));
+    } else {
+        assert(t1-t0 < ms(100));
+    }
+}
+
+int main(int, char**)
+{
+    // The default launch policy is implementation defined. libc++ defines
+    // it to be std::launch::async.
+    bool DefaultPolicyIsDeferred = false;
+    bool DPID = DefaultPolicyIsDeferred;
+
+    std::launch AnyPolicy = std::launch::async | std::launch::deferred;
+    LIBCPP_ASSERT(AnyPolicy == std::launch::any);
+
+    {
+        auto checkInt = [](std::future<int>& f) { return f.get() == 3; };
+        test<int>(checkInt, DPID,  f0);
+        test<int>(checkInt, false, std::launch::async, f0);
+        test<int>(checkInt, true,  std::launch::deferred, f0);
+        test<int>(checkInt, DPID,  AnyPolicy, f0);
+    }
+    {
+        auto checkIntRef = [&](std::future<int&>& f) { return &f.get() == &i; };
+        test<int&>(checkIntRef, DPID,  f1);
+        test<int&>(checkIntRef, false, std::launch::async, f1);
+        test<int&>(checkIntRef, true,  std::launch::deferred, f1);
+        test<int&>(checkIntRef, DPID,  AnyPolicy, f1);
+    }
+    {
+        auto checkVoid = [](std::future<void>& f) { f.get(); return true; };
+        test<void>(checkVoid, DPID,  f2);
+        test<void>(checkVoid, false, std::launch::async, f2);
+        test<void>(checkVoid, true,  std::launch::deferred, f2);
+        test<void>(checkVoid, DPID,  AnyPolicy, f2);
+    }
+    {
+        using Ret = std::unique_ptr<int>;
+        auto checkUPtr = [](std::future<Ret>& f) { return *f.get() == 3; };
+        test<Ret>(checkUPtr, DPID, f3, 3);
+        test<Ret>(checkUPtr, DPID, f4, std::unique_ptr<int>(new int(3)));
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::future<void> f = std::async(f5, 3);
+        std::this_thread::sleep_for(ms(300));
+        try { f.get(); assert (false); } catch ( int ) {}
+    }
+    {
+        std::future<void> f = std::async(std::launch::deferred, f5, 3);
+        std::this_thread::sleep_for(ms(300));
+        try { f.get(); assert (false); } catch ( int ) {}
+    }
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async.verify.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async.verify.cpp
new file mode 100644
index 0000000..997d27a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async.verify.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <future>
+
+// template <class F, class... Args>
+//     future<typename result_of<F(Args...)>::type>
+//     async(F&& f, Args&&... args);
+
+// template <class F, class... Args>
+//     future<typename result_of<F(Args...)>::type>
+//     async(launch policy, F&& f, Args&&... args);
+
+
+#include <future>
+#include <atomic>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int foo (int x) { return x; }
+
+int main(int, char**)
+{
+    std::async(                    foo, 3); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    std::async(std::launch::async, foo, 3); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async_race.38682.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async_race.38682.pass.cpp
new file mode 100644
index 0000000..d0cee30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async_race.38682.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// There's currently no release of OS X whose dylib contains the patch for
+// PR38682. Since the fix for future<void> is in the dylib, this test may fail.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// This test is designed to cause and allow TSAN to detect a race condition
+// in std::async, as reported in https://llvm.org/PR38682.
+
+#include <cassert>
+#include <functional>
+#include <future>
+#include <numeric>
+#include <vector>
+
+#include "test_macros.h"
+
+
+static int worker(std::vector<int> const& data) {
+  return std::accumulate(data.begin(), data.end(), 0);
+}
+
+static int& worker_ref(int& i) { return i; }
+
+static void worker_void() { }
+
+int main(int, char**) {
+  // future<T>
+  {
+    std::vector<int> const v{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+    for (int i = 0; i != 20; ++i) {
+      std::future<int> fut = std::async(std::launch::async, worker, v);
+      int answer = fut.get();
+      assert(answer == 55);
+    }
+  }
+
+  // future<T&>
+  {
+    for (int i = 0; i != 20; ++i) {
+      std::future<int&> fut = std::async(std::launch::async, worker_ref, std::ref(i));
+      int& answer = fut.get();
+      assert(answer == i);
+    }
+  }
+
+  // future<void>
+  {
+    for (int i = 0; i != 20; ++i) {
+      std::future<void> fut = std::async(std::launch::async, worker_void);
+      fut.get();
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async_race.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async_race.pass.cpp
new file mode 100644
index 0000000..91a70c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.async/async_race.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// template <class F, class... Args>
+//     future<typename result_of<F(Args...)>::type>
+//     async(F&& f, Args&&... args);
+
+// template <class F, class... Args>
+//     future<typename result_of<F(Args...)>::type>
+//     async(launch policy, F&& f, Args&&... args);
+
+// This test is designed to cause and allow TSAN to detect the race condition
+// reported in PR23293: https://llvm.org/PR23293
+
+#include <future>
+#include <chrono>
+#include <thread>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int f_async() {
+    typedef std::chrono::milliseconds ms;
+    std::this_thread::sleep_for(ms(200));
+    return 42;
+}
+
+bool ran = false;
+
+int f_deferred() {
+    ran = true;
+    return 42;
+}
+
+void test_each() {
+    {
+        std::future<int> f = std::async(f_async);
+        int const result = f.get();
+        assert(result == 42);
+    }
+    {
+        std::future<int> f = std::async(std::launch::async, f_async);
+        int const result = f.get();
+        assert(result == 42);
+    }
+    {
+        ran = false;
+        std::future<int> f = std::async(std::launch::deferred, f_deferred);
+        assert(ran == false);
+        int const result = f.get();
+        assert(ran == true);
+        assert(result == 42);
+    }
+}
+
+int main(int, char**) {
+    for (int i=0; i < 25; ++i) test_each();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/default_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/default_error_condition.pass.cpp
new file mode 100644
index 0000000..ea25027
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/default_error_condition.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// const error_category& future_category();
+
+// virtual error_condition default_error_condition(int ev) const;
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat = std::future_category();
+    std::error_condition e_cond = e_cat.default_error_condition(static_cast<int>(std::errc::not_a_directory));
+    assert(e_cond.category() == e_cat);
+    assert(e_cond.value() == static_cast<int>(std::errc::not_a_directory));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/equivalent_error_code_int.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/equivalent_error_code_int.pass.cpp
new file mode 100644
index 0000000..c2fa17c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/equivalent_error_code_int.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// const error_category& future_category();
+
+// virtual bool equivalent(const error_code& code, int condition) const;
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat = std::future_category();
+    assert(e_cat.equivalent(std::error_code(5, e_cat), 5));
+    assert(!e_cat.equivalent(std::error_code(5, e_cat), 6));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/equivalent_int_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/equivalent_int_error_condition.pass.cpp
new file mode 100644
index 0000000..1d8d14b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/equivalent_int_error_condition.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// const error_category& future_category();
+
+// virtual bool equivalent(int code, const error_condition& condition) const;
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& e_cat = std::future_category();
+    std::error_condition e_cond = e_cat.default_error_condition(5);
+    assert(e_cat.equivalent(5, e_cond));
+    assert(!e_cat.equivalent(6, e_cond));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/future_category.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/future_category.pass.cpp
new file mode 100644
index 0000000..4c8f9da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/future_category.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// const error_category& future_category();
+
+#include <future>
+#include <cstring>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::error_category& ec = std::future_category();
+    assert(std::strcmp(ec.name(), "future") == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/make_error_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/make_error_code.pass.cpp
new file mode 100644
index 0000000..ff87e5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/make_error_code.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class error_code
+
+// error_code make_error_code(future_errc e);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec = make_error_code(std::future_errc::broken_promise);
+        assert(ec.value() == static_cast<int>(std::future_errc::broken_promise));
+        assert(ec.category() == std::future_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/make_error_condition.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/make_error_condition.pass.cpp
new file mode 100644
index 0000000..549ea21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.errors/make_error_condition.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class error_condition
+
+// error_condition make_error_condition(future_errc e);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::error_condition ec1 =
+          std::make_error_condition(std::future_errc::future_already_retrieved);
+        assert(ec1.value() ==
+                  static_cast<int>(std::future_errc::future_already_retrieved));
+        assert(ec1.category() == std::future_category());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/code.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/code.pass.cpp
new file mode 100644
index 0000000..99d2ade
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/code.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class future_error
+//     future_error(error_code __ec);  // exposition only
+//     explicit future_error(future_errc _Ev) : __ec_(make_error_code(_Ev)) {} // C++17
+
+// const error_code& code() const throw();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::error_code ec = std::make_error_code(std::future_errc::broken_promise);
+        std::future_error f(ec);
+        assert(f.code() == ec);
+    }
+    {
+        std::error_code ec = std::make_error_code(std::future_errc::future_already_retrieved);
+        std::future_error f(ec);
+        assert(f.code() == ec);
+    }
+    {
+        std::error_code ec = std::make_error_code(std::future_errc::promise_already_satisfied);
+        std::future_error f(ec);
+        assert(f.code() == ec);
+    }
+    {
+        std::error_code ec = std::make_error_code(std::future_errc::no_state);
+        std::future_error f(ec);
+        assert(f.code() == ec);
+    }
+#if TEST_STD_VER > 14
+    {
+        std::future_error f(std::future_errc::broken_promise);
+        assert(f.code() == std::make_error_code(std::future_errc::broken_promise));
+    }
+    {
+        std::future_error f(std::future_errc::no_state);
+        assert(f.code() == std::make_error_code(std::future_errc::no_state));
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/types.pass.cpp
new file mode 100644
index 0000000..8e77c01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/types.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class future_error : public logic_error {...};
+
+#include <future>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_convertible<std::future_error*,
+                                       std::logic_error*>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/what.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/what.pass.cpp
new file mode 100644
index 0000000..f62212e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.future_error/what.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// LWG 2056 changed the values of future_errc, so if we're using new headers
+// with an old library we'll get incorrect messages.
+//
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <future>
+
+// class future_error
+
+// const char* what() const throw();
+
+#include <future>
+#include <cstring>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::future_error f(std::make_error_code(std::future_errc::broken_promise));
+        LIBCPP_ASSERT(std::strcmp(f.what(), "The associated promise has been destructed prior "
+                      "to the associated state becoming ready.") == 0);
+    }
+    {
+        std::future_error f(std::make_error_code(std::future_errc::future_already_retrieved));
+        LIBCPP_ASSERT(std::strcmp(f.what(), "The future has already been retrieved from "
+                      "the promise or packaged_task.") == 0);
+    }
+    {
+        std::future_error f(std::make_error_code(std::future_errc::promise_already_satisfied));
+        LIBCPP_ASSERT(std::strcmp(f.what(), "The state of the promise has already been set.") == 0);
+    }
+    {
+        std::future_error f(std::make_error_code(std::future_errc::no_state));
+        LIBCPP_ASSERT(std::strcmp(f.what(), "Operation not permitted on an object without "
+                      "an associated state.") == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/future_errc.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/future_errc.pass.cpp
new file mode 100644
index 0000000..49e2bcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/future_errc.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// UNSUPPORTED: c++03
+// Libc++'s enum class emulation does not allow static_cast<Enum>(0) to work.
+
+// <future>
+
+// enum class future_errc
+// {
+//     broken_promise = implementation-defined,
+//     future_already_retrieved = implementation-defined,
+//     promise_already_satisfied = implementation-defined,
+//     no_state = implementation-defined
+// };
+
+#include <future>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::future_errc::broken_promise != std::future_errc::future_already_retrieved, "");
+    static_assert(std::future_errc::broken_promise != std::future_errc::promise_already_satisfied, "");
+    static_assert(std::future_errc::broken_promise != std::future_errc::no_state, "");
+    static_assert(std::future_errc::future_already_retrieved != std::future_errc::promise_already_satisfied, "");
+    static_assert(std::future_errc::future_already_retrieved != std::future_errc::no_state, "");
+    static_assert(std::future_errc::promise_already_satisfied != std::future_errc::no_state, "");
+
+    static_assert(std::future_errc::broken_promise != static_cast<std::future_errc>(0), "");
+    static_assert(std::future_errc::future_already_retrieved != static_cast<std::future_errc>(0), "");
+    static_assert(std::future_errc::promise_already_satisfied != static_cast<std::future_errc>(0), "");
+    static_assert(std::future_errc::no_state != static_cast<std::future_errc>(0), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/future_status.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/future_status.pass.cpp
new file mode 100644
index 0000000..d736253
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/future_status.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// enum class future_status
+// {
+//     ready,
+//     timeout,
+//     deferred
+// };
+
+#include <future>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(static_cast<int>(std::future_status::ready) == 0, "");
+    static_assert(static_cast<int>(std::future_status::timeout) == 1, "");
+    static_assert(static_cast<int>(std::future_status::deferred) == 2, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/is_error_code_enum_future_errc.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/is_error_code_enum_future_errc.pass.cpp
new file mode 100644
index 0000000..f6f93f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/is_error_code_enum_future_errc.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// template <> struct is_error_code_enum<future_errc> : public true_type {};
+
+#include <future>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_error_code_enum  <std::future_errc>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(std::is_error_code_enum_v<std::future_errc>, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/launch.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/launch.pass.cpp
new file mode 100644
index 0000000..37ad2ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.overview/launch.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// enum class launch
+// {
+//     async = 1,
+//     deferred = 2,
+//     any = async | deferred /* EXTENSION */
+// };
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER < 11
+   LIBCPP_STATIC_ASSERT(static_cast<int>(std::launch::any) ==
+                 (static_cast<int>(std::launch::async) | static_cast<int>(std::launch::deferred)), "");
+#else
+    LIBCPP_STATIC_ASSERT(std::launch::any == (std::launch::async | std::launch::deferred), "");
+    static_assert(std::launch(0) == (std::launch::async & std::launch::deferred), "");
+    LIBCPP_STATIC_ASSERT(std::launch::any == (std::launch::async ^ std::launch::deferred), "");
+    LIBCPP_STATIC_ASSERT(std::launch::deferred == ~std::launch::async, "");
+    std::launch x = std::launch::async;
+    x &= std::launch::deferred;
+    assert(x == std::launch(0));
+    x = std::launch::async;
+    x |= std::launch::deferred;
+    LIBCPP_ASSERT(x == std::launch::any);
+    x ^= std::launch::deferred;
+    assert(x == std::launch::async);
+#endif
+    static_assert(static_cast<int>(std::launch::async) == 1, "");
+    static_assert(static_cast<int>(std::launch::deferred) == 2, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/alloc_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/alloc_ctor.pass.cpp
new file mode 100644
index 0000000..2e8b2aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/alloc_ctor.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// template <class Allocator>
+//   promise(allocator_arg_t, const Allocator& a);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p(std::allocator_arg, test_allocator<int>(42, &alloc_stats));
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int&> p(std::allocator_arg, test_allocator<int>(42, &alloc_stats));
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int&> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<void> p(std::allocator_arg, test_allocator<void>(42, &alloc_stats));
+        assert(alloc_stats.alloc_count == 1);
+        std::future<void> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    // Test with a minimal allocator
+    {
+        std::promise<int> p(std::allocator_arg, bare_allocator<void>());
+        std::future<int> f = p.get_future();
+        assert(f.valid());
+    }
+    {
+        std::promise<int&> p(std::allocator_arg, bare_allocator<void>());
+        std::future<int&> f = p.get_future();
+        assert(f.valid());
+    }
+    {
+        std::promise<void> p(std::allocator_arg, bare_allocator<void>());
+        std::future<void> f = p.get_future();
+        assert(f.valid());
+    }
+    // Test with a minimal allocator that returns class-type pointers
+    {
+        std::promise<int> p(std::allocator_arg, min_allocator<void>());
+        std::future<int> f = p.get_future();
+        assert(f.valid());
+    }
+    {
+        std::promise<int&> p(std::allocator_arg, min_allocator<void>());
+        std::future<int&> f = p.get_future();
+        assert(f.valid());
+    }
+    {
+        std::promise<void> p(std::allocator_arg, min_allocator<void>());
+        std::future<void> f = p.get_future();
+        assert(f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/copy_assign.verify.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/copy_assign.verify.cpp
new file mode 100644
index 0000000..96d7e57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/copy_assign.verify.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class promise<R>
+
+// promise& operator=(const promise& rhs) = delete;
+
+#include <future>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::promise<int> p0, p;
+        p = p0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+    {
+        std::promise<int&> p0, p;
+        p = p0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+    {
+        std::promise<void> p0, p;
+        p = p0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/copy_ctor.verify.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/copy_ctor.verify.cpp
new file mode 100644
index 0000000..b4f3d7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/copy_ctor.verify.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class promise<R>
+
+// promise(const promise&) = delete;
+
+#include <future>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::promise<int> p0;
+        std::promise<int> p(p0); // expected-error {{call to deleted constructor of 'std::promise<int>'}}
+    }
+    {
+        std::promise<int &> p0;
+        std::promise<int &> p(p0); // expected-error {{call to deleted constructor of 'std::promise<int &>'}}
+    }
+    {
+        std::promise<void> p0;
+        std::promise<void> p(p0); // expected-error {{call to deleted constructor of 'std::promise<void>'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/default.pass.cpp
new file mode 100644
index 0000000..80a5f0a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/default.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// promise();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::promise<int> p;
+        std::future<int> f = p.get_future();
+        assert(f.valid());
+    }
+    {
+        std::promise<int&> p;
+        std::future<int&> f = p.get_future();
+        assert(f.valid());
+    }
+    {
+        std::promise<void> p;
+        std::future<void> f = p.get_future();
+        assert(f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/dtor.pass.cpp
new file mode 100644
index 0000000..2ee79ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/dtor.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// ~promise();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::future<T> f;
+        {
+            std::promise<T> p;
+            f = p.get_future();
+            p.set_value(3);
+        }
+        assert(f.get() == 3);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        typedef int T;
+        std::future<T> f;
+        {
+            std::promise<T> p;
+            f = p.get_future();
+        }
+        try
+        {
+            T i = f.get();
+            ((void)i); // Prevent unused warning
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::broken_promise));
+        }
+    }
+#endif
+
+    {
+        typedef int& T;
+        int i = 4;
+        std::future<T> f;
+        {
+            std::promise<T> p;
+            f = p.get_future();
+            p.set_value(i);
+        }
+        assert(&f.get() == &i);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        typedef int& T;
+        std::future<T> f;
+        {
+            std::promise<T> p;
+            f = p.get_future();
+        }
+        try
+        {
+            T i = f.get();
+            ((void)i); // Prevent unused warning
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::broken_promise));
+        }
+    }
+#endif
+
+    {
+        typedef void T;
+        std::future<T> f;
+        {
+            std::promise<T> p;
+            f = p.get_future();
+            p.set_value();
+        }
+        f.get();
+        assert(true);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        typedef void T;
+        std::future<T> f;
+        {
+            std::promise<T> p;
+            f = p.get_future();
+        }
+        try
+        {
+            f.get();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            // LWG 2056 changed the values of future_errc, so if we're using new
+            // headers with an old library the error codes won't line up.
+            //
+            // Note that this particular check only applies to promise<void>
+            // since the other specializations happen to be implemented in the
+            // header rather than the library.
+            assert(
+                e.code() == make_error_code(std::future_errc::broken_promise) ||
+                e.code() == std::error_code(0, std::future_category()));
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/get_future.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/get_future.pass.cpp
new file mode 100644
index 0000000..e90e395
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/get_future.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// future<R> get_future();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::promise<double> p;
+        std::future<double> f = p.get_future();
+        p.set_value(105.5);
+        assert(f.get() == 105.5);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::promise<double> p;
+        std::future<double> f = p.get_future();
+        try
+        {
+            f = p.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() ==  make_error_code(std::future_errc::future_already_retrieved));
+        }
+    }
+    {
+        std::promise<double> p;
+        std::promise<double> p0 = std::move(p);
+        try
+        {
+            std::future<double> f = p.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() ==  make_error_code(std::future_errc::no_state));
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/move_assign.pass.cpp
new file mode 100644
index 0000000..350db2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/move_assign.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// promise& operator=(promise&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        assert(alloc_stats.alloc_count == 2);
+        p = std::move(p0);
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            f = p0.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+#endif
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int&> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int&> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        assert(alloc_stats.alloc_count == 2);
+        p = std::move(p0);
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int&> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            f = p0.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+#endif
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<void> p0(std::allocator_arg, test_allocator<void>(&alloc_stats));
+        std::promise<void> p(std::allocator_arg, test_allocator<void>(&alloc_stats));
+        assert(alloc_stats.alloc_count == 2);
+        p = std::move(p0);
+        assert(alloc_stats.alloc_count == 1);
+        std::future<void> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            f = p0.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+#endif
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/move_ctor.pass.cpp
new file mode 100644
index 0000000..b473c1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/move_ctor.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// promise(promise&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int> p(std::move(p0));
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            f = p0.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+        assert(alloc_stats.alloc_count == 1);
+#endif
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int&> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int&> p(std::move(p0));
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int&> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            f = p0.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+        assert(alloc_stats.alloc_count == 1);
+#endif
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<void> p0(std::allocator_arg, test_allocator<void>(&alloc_stats));
+        std::promise<void> p(std::move(p0));
+        assert(alloc_stats.alloc_count == 1);
+        std::future<void> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            f = p0.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+        assert(alloc_stats.alloc_count == 1);
+#endif
+    }
+    assert(alloc_stats.alloc_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_exception.pass.cpp
new file mode 100644
index 0000000..bc6bc26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_exception.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void set_exception(exception_ptr p);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        p.set_exception(std::make_exception_ptr(3));
+        try
+        {
+            f.get();
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 3);
+        }
+        try
+        {
+            p.set_exception(std::make_exception_ptr(3));
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_exception_at_thread_exit.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_exception_at_thread_exit.pass.cpp
new file mode 100644
index 0000000..a1a351e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_exception_at_thread_exit.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise::set_exception_at_thread_exit(exception_ptr p);
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func(std::promise<int> p)
+{
+    p.set_exception_at_thread_exit(std::make_exception_ptr(3));
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        support::make_test_thread(func, std::move(p)).detach();
+        try
+        {
+            f.get();
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 3);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_lvalue.pass.cpp
new file mode 100644
index 0000000..f61eee8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_lvalue.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise<R&>::set_value(R& r);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int& T;
+        int i = 3;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        p.set_value(i);
+        int& j = f.get();
+        assert(j == 3);
+        ++i;
+        assert(j == 4);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            p.set_value(i);
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_lvalue_at_thread_exit.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_lvalue_at_thread_exit.pass.cpp
new file mode 100644
index 0000000..314293c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_lvalue_at_thread_exit.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise<R&>::set_value_at_thread_exit(R& r);
+
+#include <future>
+#include <memory>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int i = 0;
+
+void func(std::promise<int&> p)
+{
+    p.set_value_at_thread_exit(i);
+    i = 4;
+}
+
+int main(int, char**)
+{
+    {
+        std::promise<int&> p;
+        std::future<int&> f = p.get_future();
+        support::make_test_thread(func, std::move(p)).detach();
+        assert(f.get() == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_rvalue.pass.cpp
new file mode 100644
index 0000000..f5a6ab9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_rvalue.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-threads, no-exceptions
+
+// <future>
+
+// class promise<R>
+
+// void promise::set_value(R&& r);
+
+#include <future>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    A() {}
+    A(const A&) = delete;
+    A(A&&) {throw 9;}
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::unique_ptr<int> T;
+        T i(new int(3));
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        p.set_value(std::move(i));
+        assert(*f.get() == 3);
+        try
+        {
+            p.set_value(std::move(i));
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+        }
+    }
+    {
+        typedef A T;
+        T i;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        try
+        {
+            p.set_value(std::move(i));
+            assert(false);
+        }
+        catch (int j)
+        {
+            assert(j == 9);
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_rvalue_at_thread_exit.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_rvalue_at_thread_exit.pass.cpp
new file mode 100644
index 0000000..b51f549
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_rvalue_at_thread_exit.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise::set_value_at_thread_exit(R&& r);
+
+#include <future>
+#include <memory>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func(std::promise<std::unique_ptr<int>> p)
+{
+    p.set_value_at_thread_exit(std::unique_ptr<int>(new int(5)));
+}
+
+int main(int, char**)
+{
+    {
+        std::promise<std::unique_ptr<int>> p;
+        std::future<std::unique_ptr<int>> f = p.get_future();
+        support::make_test_thread(func, std::move(p)).detach();
+        assert(*f.get() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_at_thread_exit_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_at_thread_exit_const.pass.cpp
new file mode 100644
index 0000000..7bf34b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_at_thread_exit_const.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise::set_value_at_thread_exit(const R& r);
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func(std::promise<int> p)
+{
+    const int i = 5;
+    p.set_value_at_thread_exit(i);
+}
+
+int main(int, char**)
+{
+    {
+        std::promise<int> p;
+        std::future<int> f = p.get_future();
+        support::make_test_thread(func, std::move(p)).detach();
+        assert(f.get() == 5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_at_thread_exit_void.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_at_thread_exit_void.pass.cpp
new file mode 100644
index 0000000..05dca4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_at_thread_exit_void.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise<void>::set_value_at_thread_exit();
+
+#include <future>
+#include <memory>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int i = 0;
+
+void func(std::promise<void> p)
+{
+    p.set_value_at_thread_exit();
+    i = 1;
+}
+
+int main(int, char**)
+{
+    {
+        std::promise<void> p;
+        std::future<void> f = p.get_future();
+        support::make_test_thread(func, std::move(p)).detach();
+        f.get();
+        assert(i == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_const.pass.cpp
new file mode 100644
index 0000000..c4c8955
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_const.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise::set_value(const R& r);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    A() {}
+    A(const A&) {
+        TEST_THROW(10);
+    }
+};
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        T i = 3;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        p.set_value(i);
+        ++i;
+        assert(f.get() == 3);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        --i;
+        try
+        {
+            p.set_value(i);
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+        }
+#endif
+    }
+    {
+        typedef A T;
+        T i;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try
+        {
+            p.set_value(i);
+            assert(false);
+        }
+        catch (int j)
+        {
+            assert(j == 10);
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_void.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_void.pass.cpp
new file mode 100644
index 0000000..9f12e49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/set_value_void.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void promise<void>::set_value();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::future<T> f = p.get_future();
+        p.set_value();
+        f.get();
+        try
+        {
+            p.set_value();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+        }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/swap.pass.cpp
new file mode 100644
index 0000000..efb32a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/swap.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class promise<R>
+
+// void swap(promise& other);
+
+// template <class R> void swap(promise<R>& x, promise<R>& y);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        assert(alloc_stats.alloc_count == 2);
+        p.swap(p0);
+        assert(alloc_stats.alloc_count == 2);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 2);
+        assert(f.valid());
+        f = p0.get_future();
+        assert(f.valid());
+        assert(alloc_stats.alloc_count == 2);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        assert(alloc_stats.alloc_count == 2);
+        swap(p, p0);
+        assert(alloc_stats.alloc_count == 2);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 2);
+        assert(f.valid());
+        f = p0.get_future();
+        assert(f.valid());
+        assert(alloc_stats.alloc_count == 2);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int> p;
+        assert(alloc_stats.alloc_count == 1);
+        p.swap(p0);
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+        f = p0.get_future();
+        assert(f.valid());
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::promise<int> p0(std::allocator_arg, test_allocator<int>(&alloc_stats));
+        std::promise<int> p;
+        assert(alloc_stats.alloc_count == 1);
+        swap(p, p0);
+        assert(alloc_stats.alloc_count == 1);
+        std::future<int> f = p.get_future();
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+        f = p0.get_future();
+        assert(f.valid());
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/uses_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/uses_allocator.pass.cpp
new file mode 100644
index 0000000..7c859a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.promise/uses_allocator.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class promise<R>
+
+// template <class R, class Alloc>
+//   struct uses_allocator<promise<R>, Alloc>
+//      : true_type { };
+
+#include <future>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    static_assert((std::uses_allocator<std::promise<int>, test_allocator<int> >::value), "");
+    static_assert((std::uses_allocator<std::promise<int&>, test_allocator<int> >::value), "");
+    static_assert((std::uses_allocator<std::promise<void>, test_allocator<void> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/copy_assign.pass.cpp
new file mode 100644
index 0000000..f7f8d27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/copy_assign.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// shared_future& operator=(const shared_future& rhs);
+// noexcept in C++17
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f;
+        f = f0;
+#if TEST_STD_VER > 14
+        static_assert(noexcept(f = f0), "" );
+#endif
+        assert(f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f;
+        f = f0;
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f;
+        f = f0;
+        assert(f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f;
+        f = f0;
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f;
+        f = f0;
+        assert(f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f;
+        f = f0;
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/copy_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/copy_ctor.pass.cpp
new file mode 100644
index 0000000..35f19e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/copy_ctor.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// shared_future(const shared_future& rhs);
+// noexcept in C++17
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f = f0;
+#if TEST_STD_VER > 14
+        static_assert(noexcept(std::shared_future<T>{f0}), "" );
+#endif
+        assert(f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f = f0;
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f = f0;
+        assert(f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f = f0;
+        assert(f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f = f0;
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/ctor_future.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/ctor_future.pass.cpp
new file mode 100644
index 0000000..f120fa0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/ctor_future.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// shared_future(future<R>&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/default.pass.cpp
new file mode 100644
index 0000000..a808eb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/default.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class shared_future<R>
+
+// shared_future();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_future<int> f;
+        assert(!f.valid());
+    }
+    {
+        std::shared_future<int&> f;
+        assert(!f.valid());
+    }
+    {
+        std::shared_future<void> f;
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/dtor.pass.cpp
new file mode 100644
index 0000000..4a65daf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/dtor.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// ~shared_future();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    assert(alloc_stats.alloc_count == 0);
+    {
+        typedef int T;
+        std::shared_future<T> f;
+        {
+            std::promise<T> p(std::allocator_arg, test_allocator<T>(&alloc_stats));
+            assert(alloc_stats.alloc_count == 1);
+            f = p.get_future();
+            assert(alloc_stats.alloc_count == 1);
+            assert(f.valid());
+        }
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        typedef int& T;
+        std::shared_future<T> f;
+        {
+            std::promise<T> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
+            assert(alloc_stats.alloc_count == 1);
+            f = p.get_future();
+            assert(alloc_stats.alloc_count == 1);
+            assert(f.valid());
+        }
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        typedef void T;
+        std::shared_future<T> f;
+        {
+            std::promise<T> p(std::allocator_arg, test_allocator<T>(&alloc_stats));
+            assert(alloc_stats.alloc_count == 1);
+            f = p.get_future();
+            assert(alloc_stats.alloc_count == 1);
+            assert(f.valid());
+        }
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/get.pass.cpp
new file mode 100644
index 0000000..62da170
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/get.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// const R& shared_future::get();
+// R& shared_future<R&>::get();
+// void shared_future<void>::get();
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func1(std::promise<int> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value(3);
+}
+
+void func2(std::promise<int> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_exception(std::make_exception_ptr(3));
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    j = 5;
+    p.set_value(j);
+}
+
+void func4(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_exception(std::make_exception_ptr(3.5));
+}
+
+void func5(std::promise<void> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value();
+}
+
+void func6(std::promise<void> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_exception(std::make_exception_ptr('c'));
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        {
+            std::promise<T> p;
+            std::shared_future<T> f = p.get_future();
+            support::make_test_thread(func1, std::move(p)).detach();
+            assert(f.valid());
+            assert(f.get() == 3);
+            assert(f.valid());
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            std::promise<T> p;
+            std::shared_future<T> f = p.get_future();
+            support::make_test_thread(func2, std::move(p)).detach();
+            try
+            {
+                assert(f.valid());
+                assert(f.get() == 3);
+                assert(false);
+            }
+            catch (int i)
+            {
+                assert(i == 3);
+            }
+            assert(f.valid());
+        }
+#endif
+    }
+    {
+        typedef int& T;
+        {
+            std::promise<T> p;
+            std::shared_future<T> f = p.get_future();
+            support::make_test_thread(func3, std::move(p)).detach();
+            assert(f.valid());
+            assert(f.get() == 5);
+            assert(f.valid());
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            std::promise<T> p;
+            std::shared_future<T> f = p.get_future();
+            support::make_test_thread(func4, std::move(p)).detach();
+            try
+            {
+                assert(f.valid());
+                assert(f.get() == 3);
+                assert(false);
+            }
+            catch (double i)
+            {
+                assert(i == 3.5);
+            }
+            assert(f.valid());
+        }
+#endif
+    }
+    {
+        typedef void T;
+        {
+            std::promise<T> p;
+            std::shared_future<T> f = p.get_future();
+            support::make_test_thread(func5, std::move(p)).detach();
+            assert(f.valid());
+            f.get();
+            assert(f.valid());
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            std::promise<T> p;
+            std::shared_future<T> f = p.get_future();
+            support::make_test_thread(func6, std::move(p)).detach();
+            try
+            {
+                assert(f.valid());
+                f.get();
+                assert(false);
+            }
+            catch (char i)
+            {
+                assert(i == 'c');
+            }
+            assert(f.valid());
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/move_assign.pass.cpp
new file mode 100644
index 0000000..cc3f3f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/move_assign.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// shared_future& operator=(shared_future&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/move_ctor.pass.cpp
new file mode 100644
index 0000000..ecc0e81
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/move_ctor.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// shared_future(shared_future&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::shared_future<T> f0 = p.get_future();
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::shared_future<T> f0;
+        std::shared_future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait.pass.cpp
new file mode 100644
index 0000000..12c71ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// void wait() const;
+
+#include <cassert>
+#include <chrono>
+#include <future>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func1(std::promise<int> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value(3);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    j = 5;
+    p.set_value(j);
+}
+
+void func5(std::promise<void> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value();
+}
+
+int main(int, char**)
+{
+    typedef std::chrono::high_resolution_clock Clock;
+    typedef std::chrono::duration<double, std::milli> ms;
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::shared_future<T> f = p.get_future();
+        support::make_test_thread(func1, std::move(p)).detach();
+        assert(f.valid());
+        f.wait();
+        assert(f.valid());
+        Clock::time_point t0 = Clock::now();
+        f.wait();
+        Clock::time_point t1 = Clock::now();
+        assert(f.valid());
+        assert(t1-t0 < ms(5));
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::shared_future<T> f = p.get_future();
+        support::make_test_thread(func3, std::move(p)).detach();
+        assert(f.valid());
+        f.wait();
+        assert(f.valid());
+        Clock::time_point t0 = Clock::now();
+        f.wait();
+        Clock::time_point t1 = Clock::now();
+        assert(f.valid());
+        assert(t1-t0 < ms(5));
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::shared_future<T> f = p.get_future();
+        support::make_test_thread(func5, std::move(p)).detach();
+        assert(f.valid());
+        f.wait();
+        assert(f.valid());
+        Clock::time_point t0 = Clock::now();
+        f.wait();
+        Clock::time_point t1 = Clock::now();
+        assert(f.valid());
+        assert(t1-t0 < ms(5));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait_for.pass.cpp
new file mode 100644
index 0000000..8067438
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait_for.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// template <class Rep, class Period>
+//   future_status
+//   wait_for(const chrono::duration<Rep, Period>& rel_time) const;
+
+#include <cassert>
+#include <chrono>
+#include <future>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+typedef std::chrono::milliseconds ms;
+
+static const ms sleepTime(500);
+static const ms waitTime(5000);
+
+void func1(std::promise<int> p)
+{
+  std::this_thread::sleep_for(sleepTime);
+  p.set_value(3);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+  std::this_thread::sleep_for(sleepTime);
+  j = 5;
+  p.set_value(j);
+}
+
+void func5(std::promise<void> p)
+{
+  std::this_thread::sleep_for(sleepTime);
+  p.set_value();
+}
+
+int main(int, char**)
+{
+  typedef std::chrono::high_resolution_clock Clock;
+
+  {
+    typedef int T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    support::make_test_thread(func1, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_for(ms(1)) == std::future_status::timeout);
+    assert(f.valid());
+    assert(f.wait_for(waitTime) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+  {
+    typedef int& T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    support::make_test_thread(func3, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_for(ms(1)) == std::future_status::timeout);
+    assert(f.valid());
+    assert(f.wait_for(waitTime) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+  {
+    typedef void T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    support::make_test_thread(func5, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_for(ms(1)) == std::future_status::timeout);
+    assert(f.valid());
+    assert(f.wait_for(waitTime) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+
+  {
+    typedef int T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    Clock::time_point t0 = Clock::now();
+    support::make_test_thread(func1, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_for(ms(1)) == std::future_status::timeout);
+    assert(f.valid());
+    f.wait();
+    Clock::time_point t1 = Clock::now();
+    assert(f.valid());
+    assert(t1 - t0 >= sleepTime);
+    assert(f.wait_for(waitTime) == std::future_status::ready);
+    assert(f.valid());
+  }
+  {
+    typedef int& T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    Clock::time_point t0 = Clock::now();
+    support::make_test_thread(func3, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_for(ms(1)) == std::future_status::timeout);
+    assert(f.valid());
+    f.wait();
+    Clock::time_point t1 = Clock::now();
+    assert(f.valid());
+    assert(t1 - t0 >= sleepTime);
+    assert(f.wait_for(waitTime) == std::future_status::ready);
+    assert(f.valid());
+  }
+  {
+    typedef void T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    Clock::time_point t0 = Clock::now();
+    support::make_test_thread(func5, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_for(ms(1)) == std::future_status::timeout);
+    assert(f.valid());
+    f.wait();
+    Clock::time_point t1 = Clock::now();
+    assert(f.valid());
+    assert(t1 - t0 >= sleepTime);
+    assert(f.wait_for(waitTime) == std::future_status::ready);
+    assert(f.valid());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait_until.pass.cpp
new file mode 100644
index 0000000..904735f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.shared_future/wait_until.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class shared_future<R>
+
+// template <class Clock, class Duration>
+//   future_status
+//   wait_until(const chrono::time_point<Clock, Duration>& abs_time) const;
+
+#include <atomic>
+#include <cassert>
+#include <chrono>
+#include <future>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+enum class WorkerThreadState { Uninitialized, AllowedToRun, Exiting };
+typedef std::chrono::milliseconds ms;
+
+std::atomic<WorkerThreadState> thread_state(WorkerThreadState::Uninitialized);
+
+void set_worker_thread_state(WorkerThreadState state)
+{
+  thread_state.store(state, std::memory_order_relaxed);
+}
+
+void wait_for_worker_thread_state(WorkerThreadState state)
+{
+  while (thread_state.load(std::memory_order_relaxed) != state)
+    std::this_thread::yield();
+}
+
+void func1(std::promise<int> p)
+{
+  wait_for_worker_thread_state(WorkerThreadState::AllowedToRun);
+  p.set_value(3);
+  set_worker_thread_state(WorkerThreadState::Exiting);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+  wait_for_worker_thread_state(WorkerThreadState::AllowedToRun);
+  j = 5;
+  p.set_value(j);
+  set_worker_thread_state(WorkerThreadState::Exiting);
+}
+
+void func5(std::promise<void> p)
+{
+  wait_for_worker_thread_state(WorkerThreadState::AllowedToRun);
+  p.set_value();
+  set_worker_thread_state(WorkerThreadState::Exiting);
+}
+
+int main(int, char**)
+{
+  typedef std::chrono::high_resolution_clock Clock;
+
+  {
+    typedef int T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    support::make_test_thread(func1, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::timeout);
+    assert(f.valid());
+
+    // allow the worker thread to produce the result and wait until the worker is done
+    set_worker_thread_state(WorkerThreadState::AllowedToRun);
+    wait_for_worker_thread_state(WorkerThreadState::Exiting);
+
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+  {
+    typedef int& T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    support::make_test_thread(func3, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::timeout);
+    assert(f.valid());
+
+    // allow the worker thread to produce the result and wait until the worker is done
+    set_worker_thread_state(WorkerThreadState::AllowedToRun);
+    wait_for_worker_thread_state(WorkerThreadState::Exiting);
+
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+  {
+    typedef void T;
+    std::promise<T> p;
+    std::shared_future<T> f = p.get_future();
+    support::make_test_thread(func5, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::timeout);
+    assert(f.valid());
+
+    // allow the worker thread to produce the result and wait until the worker is done
+    set_worker_thread_state(WorkerThreadState::AllowedToRun);
+    wait_for_worker_thread_state(WorkerThreadState::Exiting);
+
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.state/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.state/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.state/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/assign_copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/assign_copy.fail.cpp
new file mode 100644
index 0000000..09db1a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/assign_copy.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// packaged_task& operator=(packaged_task&) = delete;
+
+#include <future>
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p0, p;
+        p = p0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/assign_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/assign_move.pass.cpp
new file mode 100644
index 0000000..64db057
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/assign_move.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// packaged_task& operator=(packaged_task&& other);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p0(A(5));
+        std::packaged_task<double(int, char)> p;
+        p = std::move(p0);
+        assert(!p0.valid());
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+    }
+    {
+        std::packaged_task<double(int, char)> p0;
+        std::packaged_task<double(int, char)> p;
+        p = std::move(p0);
+        assert(!p0.valid());
+        assert(!p.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctad.compile.pass.cpp
new file mode 100644
index 0000000..0389ed8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctad.compile.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// checks that CTAD works properly
+
+#include <future>
+#include <type_traits>
+
+int func(char*);
+static_assert(std::is_same_v<decltype(std::packaged_task{func}), std::packaged_task<int(char*)>>);
+
+int funcn(char*) noexcept;
+static_assert(std::is_same_v<decltype(std::packaged_task{funcn}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct Callable {
+  int operator()(char*) noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{Callable<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{Callable<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableC {
+  int operator()(char*) const noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableC<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableC<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableV {
+  int operator()(char*) const noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableV<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableV<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableCV {
+  int operator()(char*) const volatile noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableCV<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableCV<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableL {
+  int operator()(char*) & noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableL<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableL<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableCL {
+  int operator()(char*) const & noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableCL<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableCL<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableVL {
+  int operator()(char*) const noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableVL<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableVL<false>{}}), std::packaged_task<int(char*)>>);
+
+template <bool Noexcept>
+struct CallableCVL {
+  int operator()(char*) const volatile & noexcept(Noexcept);
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableCVL<true>{}}), std::packaged_task<int(char*)>>);
+static_assert(std::is_same_v<decltype(std::packaged_task{CallableCVL<false>{}}), std::packaged_task<int(char*)>>);
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctad.static.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctad.static.compile.pass.cpp
new file mode 100644
index 0000000..f982f22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctad.static.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: clang-14, clang-15, gcc-12, apple-clang-14
+
+// checks that CTAD for std::packaged_task works properly with static operator() overloads
+
+#include <future>
+#include <type_traits>
+
+struct Except {
+  static int operator()(int*, long*) { return 0; }
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{Except{}}), std::packaged_task<int(int*, long*)>>);
+
+struct Noexcept {
+  static int operator()(int*, long*) noexcept { return 0; }
+};
+static_assert(std::is_same_v<decltype(std::packaged_task{Noexcept{}}), std::packaged_task<int(int*, long*)>>);
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor1.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor1.fail.cpp
new file mode 100644
index 0000000..3c61c76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor1.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+// template <class F>
+//   packaged_task(F&& f);
+// These constructors shall not participate in overload resolution if
+//    decay<F>::type is the same type as std::packaged_task<R(ArgTypes...)>.
+
+#include <future>
+#include <cassert>
+
+struct A {};
+typedef std::packaged_task<A(int, char)> PT;
+typedef volatile std::packaged_task<A(int, char)> VPT;
+
+
+int main(int, char**)
+{
+    VPT init{};
+    auto const& c_init = init;
+    PT p1{init}; // expected-error {{no matching constructor}}
+    PT p2{c_init}; // expected-error {{no matching constructor}}
+    PT p3{std::move(init)}; // expected-error {{no matching constructor for initialization of 'PT' (aka 'packaged_task<A (int, char)>')}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor2.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor2.compile.pass.cpp
new file mode 100644
index 0000000..3ab5990
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor2.compile.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+// template <class F, class Allocator>
+//   packaged_task(allocator_arg_t, const Allocator& a, F&& f);
+// These constructors shall not participate in overload resolution if
+//    decay<F>::type is the same type as std::packaged_task<R(ArgTypes...)>.
+
+#include <cassert>
+#include <future>
+
+#include "test_allocator.h"
+
+struct A {};
+using PT = std::packaged_task<A(int, char)>;
+using VPT = volatile std::packaged_task<A(int, char)>;
+
+static_assert(!std::is_constructible<PT, std::allocator_arg_t, test_allocator<A>, VPT>::value, "");
+
+using PA = std::packaged_task<A(int)>;
+using PI = std::packaged_task<int(int)>;
+
+static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PA&>::value, "");
+static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PA&&>::value, "");
+static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PA&>::value, "");
+static_assert(!std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PA&&>::value, "");
+
+static_assert( std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PI&>::value, "");
+static_assert( std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, const PI&&>::value, "");
+static_assert( std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PI&>::value, "");
+static_assert( std::is_constructible<PA, std::allocator_arg_t, std::allocator<A>, volatile PI&&>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_copy.fail.cpp
new file mode 100644
index 0000000..5250ae7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_copy.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// packaged_task(packaged_task&) = delete;
+
+#include <future>
+
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p0;
+        std::packaged_task<double(int, char)> p(p0); // expected-error {{call to deleted constructor of 'std::packaged_task<double (int, char)>'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_default.pass.cpp
new file mode 100644
index 0000000..491e8d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_default.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// packaged_task();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    std::packaged_task<A(int, char)> p;
+    assert(!p.valid());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_func.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_func.pass.cpp
new file mode 100644
index 0000000..b3581a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_func.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// template <class F>
+//     explicit packaged_task(F&& f);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    static int n_moves;
+    static int n_copies;
+
+    explicit A(long i) : data_(i) {}
+    A(A&& a) : data_(a.data_) {++n_moves; a.data_ = -1;}
+    A(const A& a) : data_(a.data_) {++n_copies;}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int A::n_moves = 0;
+int A::n_copies = 0;
+
+int func(int i) { return i; }
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+        assert(A::n_copies == 0);
+        assert(A::n_moves > 0);
+    }
+    A::n_copies = 0;
+    A::n_copies = 0;
+    {
+        A a(5);
+        std::packaged_task<double(int, char)> p(a);
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+        assert(A::n_copies > 0);
+        assert(A::n_moves > 0);
+    }
+    {
+        std::packaged_task<int(int)> p(&func);
+        assert(p.valid());
+        std::future<int> f = p.get_future();
+        p(4);
+        assert(f.get() == 4);
+    }
+    {
+        std::packaged_task<int(int)> p(func);
+        assert(p.valid());
+        std::future<int> f = p.get_future();
+        p(4);
+        assert(f.get() == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_func_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_func_alloc.pass.cpp
new file mode 100644
index 0000000..1b2177e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_func_alloc.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// packaged_task allocator support was removed in C++17 (LWG 2921)
+// REQUIRES: c++11 || c++14
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// template <class F, class Allocator>
+//     explicit packaged_task(allocator_arg_t, const Allocator& a, F&& f);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+class A
+{
+    long data_;
+
+public:
+    static int n_moves;
+    static int n_copies;
+
+    explicit A(long i) : data_(i) {}
+    A(A&& a) : data_(a.data_) {++n_moves; a.data_ = -1;}
+    A(const A& a) : data_(a.data_) {++n_copies;}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int A::n_moves = 0;
+int A::n_copies = 0;
+
+int func(int i) { return i; }
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    {
+        std::packaged_task<double(int, char)> p(std::allocator_arg,
+                                                test_allocator<A>(&alloc_stats), A(5));
+        assert(alloc_stats.alloc_count > 0);
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 'a');
+        assert(f.get() == 105.0);
+        assert(A::n_copies == 0);
+        assert(A::n_moves > 0);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    A::n_copies = 0;
+    A::n_moves  = 0;
+    {
+        A a(5);
+        std::packaged_task<double(int, char)> p(std::allocator_arg,
+                                                test_allocator<A>(&alloc_stats), a);
+        assert(alloc_stats.alloc_count > 0);
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 'a');
+        assert(f.get() == 105.0);
+        assert(A::n_copies > 0);
+        assert(A::n_moves >= 0);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    A::n_copies = 0;
+    A::n_moves  = 0;
+    {
+        A a(5);
+        std::packaged_task<int(int)> p(std::allocator_arg, test_allocator<A>(&alloc_stats), &func);
+        assert(alloc_stats.alloc_count > 0);
+        assert(p.valid());
+        std::future<int> f = p.get_future();
+        p(4);
+        assert(f.get() == 4);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    A::n_copies = 0;
+    A::n_moves  = 0;
+    {
+        A a(5);
+        std::packaged_task<int(int)> p(std::allocator_arg, test_allocator<A>(&alloc_stats), func);
+        assert(alloc_stats.alloc_count > 0);
+        assert(p.valid());
+        std::future<int> f = p.get_future();
+        p(4);
+        assert(f.get() == 4);
+    }
+    assert(alloc_stats.alloc_count == 0);
+    A::n_copies = 0;
+    A::n_moves  = 0;
+    {
+        std::packaged_task<double(int, char)> p(std::allocator_arg,
+                                                bare_allocator<void>(), A(5));
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 'a');
+        assert(f.get() == 105.0);
+        assert(A::n_copies == 0);
+        assert(A::n_moves > 0);
+    }
+    A::n_copies = 0;
+    A::n_moves  = 0;
+    {
+        std::packaged_task<double(int, char)> p(std::allocator_arg,
+                                                min_allocator<void>(), A(5));
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 'a');
+        assert(f.get() == 105.0);
+        assert(A::n_copies == 0);
+        assert(A::n_moves > 0);
+    }
+    A::n_copies = 0;
+    A::n_moves  = 0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_move.pass.cpp
new file mode 100644
index 0000000..eb80e74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/ctor_move.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// packaged_task(packaged_task&& other);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p0(A(5));
+        std::packaged_task<double(int, char)> p = std::move(p0);
+        assert(!p0.valid());
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+    }
+    {
+        std::packaged_task<double(int, char)> p0;
+        std::packaged_task<double(int, char)> p = std::move(p0);
+        assert(!p0.valid());
+        assert(!p.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/dtor.pass.cpp
new file mode 100644
index 0000000..606dccc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/dtor.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// ~packaged_task();
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+void func(std::packaged_task<double(int, char)>)
+{
+}
+
+void func2(std::packaged_task<double(int, char)> p) { p(3, 97); }
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func, std::move(p)).detach();
+        try
+        {
+            double i = f.get();
+            ((void)i); // Prevent unused warning
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::broken_promise));
+        }
+    }
+#endif
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func2, std::move(p)).detach();
+        assert(f.get() == 105.0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/get_future.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/get_future.pass.cpp
new file mode 100644
index 0000000..7c5931d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/get_future.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// future<R> get_future();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        try
+        {
+            f = p.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() ==  make_error_code(std::future_errc::future_already_retrieved));
+        }
+    }
+    {
+        std::packaged_task<double(int, char)> p;
+        try
+        {
+            std::future<double> f = p.get_future();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() ==  make_error_code(std::future_errc::no_state));
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/make_ready_at_thread_exit.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/make_ready_at_thread_exit.pass.cpp
new file mode 100644
index 0000000..71c63b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/make_ready_at_thread_exit.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// void make_ready_at_thread_exit(ArgTypes... args);
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const
+    {
+      if (j == 122)
+        TEST_THROW(A(6));
+      return data_ + i + j;
+    }
+};
+
+void func0(std::packaged_task<double(int, char)> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.make_ready_at_thread_exit(3, 97);
+}
+
+void func1(std::packaged_task<double(int, char)> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.make_ready_at_thread_exit(3, 122);
+}
+
+void func2(std::packaged_task<double(int, char)> p)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  p.make_ready_at_thread_exit(3, 97);
+  try {
+    p.make_ready_at_thread_exit(3, 99);
+    }
+    catch (const std::future_error& e)
+    {
+        assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+    }
+#else
+    ((void)p);
+#endif
+}
+
+void func3(std::packaged_task<double(int, char)> p)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+      p.make_ready_at_thread_exit(3, 97);
+    }
+    catch (const std::future_error& e)
+    {
+        assert(e.code() == make_error_code(std::future_errc::no_state));
+    }
+#else
+    ((void)p);
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func0, std::move(p)).detach();
+        assert(f.get() == 105.0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func1, std::move(p)).detach();
+        try
+        {
+            f.get();
+            assert(false);
+        }
+        catch (const A& e)
+        {
+          assert(e(3, 97) == 106.0);
+        }
+    }
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func2, std::move(p)).detach();
+        assert(f.get() == 105.0);
+    }
+    {
+        std::packaged_task<double(int, char)> p;
+        std::thread t = support::make_test_thread(func3, std::move(p));
+        t.join();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/operator.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/operator.pass.cpp
new file mode 100644
index 0000000..e6c833e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/operator.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// void operator()(ArgTypes... args);
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const
+    {
+      if (j == 122)
+        TEST_THROW(A(6));
+      return data_ + i + j;
+    }
+};
+
+void func0(std::packaged_task<double(int, char)> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p(3, 97);
+}
+
+void func1(std::packaged_task<double(int, char)> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p(3, 122);
+}
+
+void func2(std::packaged_task<double(int, char)> p)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  p(3, 97);
+  try {
+    p(3, 99);
+    }
+    catch (const std::future_error& e)
+    {
+        assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
+    }
+#else
+    ((void)p);
+#endif
+}
+
+void func3(std::packaged_task<double(int, char)> p)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+      p(3, 97);
+    }
+    catch (const std::future_error& e)
+    {
+        assert(e.code() == make_error_code(std::future_errc::no_state));
+    }
+#else
+    ((void)p);
+#endif
+}
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func0, std::move(p)).detach();
+        assert(f.get() == 105.0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        support::make_test_thread(func1, std::move(p)).detach();
+        try
+        {
+            f.get();
+            assert(false);
+        }
+        catch (const A& e)
+        {
+          assert(e(3, 97) == 106.0);
+        }
+    }
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        std::thread t = support::make_test_thread(func2, std::move(p));
+        assert(f.get() == 105.0);
+        t.join();
+    }
+    {
+        std::packaged_task<double(int, char)> p;
+        std::thread t = support::make_test_thread(func3, std::move(p));
+        t.join();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/reset.pass.cpp
new file mode 100644
index 0000000..0d3b76b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/reset.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// void reset();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const
+    {
+        return data_ + i + j;
+    }
+};
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p(A(5));
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+        p.reset();
+        p(4, 97);
+        f = p.get_future();
+        assert(f.get() == 106.0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::packaged_task<double(int, char)> p;
+        try
+        {
+            p.reset();
+            assert(false);
+        }
+        catch (const std::future_error& e)
+        {
+            assert(e.code() == make_error_code(std::future_errc::no_state));
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/swap.pass.cpp
new file mode 100644
index 0000000..f0e8bfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.members/swap.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// void swap(packaged_task& other);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p0(A(5));
+        std::packaged_task<double(int, char)> p;
+        p.swap(p0);
+        assert(!p0.valid());
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+    }
+    {
+        std::packaged_task<double(int, char)> p0;
+        std::packaged_task<double(int, char)> p;
+        p.swap(p0);
+        assert(!p0.valid());
+        assert(!p.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/swap.pass.cpp
new file mode 100644
index 0000000..3ac2712
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/swap.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// template <class R, class... ArgTypes>
+//   void
+//   swap(packaged_task<R(ArgTypes...)>& x, packaged_task<R(ArgTypes...)>& y);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    long data_;
+
+public:
+    explicit A(long i) : data_(i) {}
+
+    long operator()(long i, long j) const {return data_ + i + j;}
+};
+
+int main(int, char**)
+{
+    {
+        std::packaged_task<double(int, char)> p0(A(5));
+        std::packaged_task<double(int, char)> p;
+        swap(p, p0);
+        assert(!p0.valid());
+        assert(p.valid());
+        std::future<double> f = p.get_future();
+        p(3, 97);
+        assert(f.get() == 105.0);
+    }
+    {
+        std::packaged_task<double(int, char)> p0;
+        std::packaged_task<double(int, char)> p;
+        swap(p, p0);
+        assert(!p0.valid());
+        assert(!p.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/uses_allocator.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/uses_allocator.compile.pass.cpp
new file mode 100644
index 0000000..44d9fac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.task/futures.task.nonmembers/uses_allocator.compile.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// packaged_task allocator support was removed in C++17 (LWG 2976)
+// REQUIRES: c++11 || c++14
+
+// <future>
+
+// class packaged_task<R(ArgTypes...)>
+
+// template <class Callable, class Alloc>
+//   struct uses_allocator<packaged_task<Callable>, Alloc>
+//      : true_type { };
+
+#include <future>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+static_assert((std::uses_allocator<std::packaged_task<double(int, char)>, test_allocator<int> >::value), "");
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/copy_assign.verify.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/copy_assign.verify.cpp
new file mode 100644
index 0000000..284ccd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/copy_assign.verify.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class future<R>
+
+// future& operator=(const future&) = delete;
+
+#include <future>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::future<int> f0, f;
+        f = f0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+    {
+        std::future<int &> f0, f;
+        f = f0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+    {
+        std::future<void> f0, f;
+        f = f0; // expected-error {{overload resolution selected deleted operator '='}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/copy_ctor.verify.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/copy_ctor.verify.cpp
new file mode 100644
index 0000000..4424890
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/copy_ctor.verify.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class future<R>
+
+// future(const future&) = delete;
+
+#include <future>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::future<int> f0;
+        std::future<int> f = f0; // expected-error {{call to deleted constructor of 'std::future<int>'}}
+    }
+    {
+        std::future<int &> f0;
+        std::future<int &> f = f0; // expected-error {{call to deleted constructor of 'std::future<int &>'}}
+    }
+    {
+        std::future<void> f0;
+        std::future<void> f = f0; // expected-error {{call to deleted constructor of 'std::future<void>'}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/default.pass.cpp
new file mode 100644
index 0000000..8dc1384
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/default.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <future>
+
+// class future<R>
+
+// future();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::future<int> f;
+        assert(!f.valid());
+    }
+    {
+        std::future<int&> f;
+        assert(!f.valid());
+    }
+    {
+        std::future<void> f;
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/dtor.pass.cpp
new file mode 100644
index 0000000..58c95d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/dtor.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class future<R>
+
+// ~future();
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    assert(alloc_stats.alloc_count == 0);
+    {
+        typedef int T;
+        std::future<T> f;
+        {
+            std::promise<T> p(std::allocator_arg, test_allocator<T>(&alloc_stats));
+            assert(alloc_stats.alloc_count == 1);
+            f = p.get_future();
+            assert(alloc_stats.alloc_count == 1);
+            assert(f.valid());
+        }
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        typedef int& T;
+        std::future<T> f;
+        {
+            std::promise<T> p(std::allocator_arg, test_allocator<int>(&alloc_stats));
+            assert(alloc_stats.alloc_count == 1);
+            f = p.get_future();
+            assert(alloc_stats.alloc_count == 1);
+            assert(f.valid());
+        }
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+    {
+        typedef void T;
+        std::future<T> f;
+        {
+            std::promise<T> p(std::allocator_arg, test_allocator<T>(&alloc_stats));
+            assert(alloc_stats.alloc_count == 1);
+            f = p.get_future();
+            assert(alloc_stats.alloc_count == 1);
+            assert(f.valid());
+        }
+        assert(alloc_stats.alloc_count == 1);
+        assert(f.valid());
+    }
+    assert(alloc_stats.alloc_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/get.pass.cpp
new file mode 100644
index 0000000..9c5b334
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/get.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class future<R>
+
+// R future::get();
+// R& future<R&>::get();
+// void future<void>::get();
+
+#include <future>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func1(std::promise<int> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value(3);
+}
+
+void func2(std::promise<int> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_exception(std::make_exception_ptr(3));
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    j = 5;
+    p.set_value(j);
+}
+
+void func4(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_exception(std::make_exception_ptr(3.5));
+}
+
+void func5(std::promise<void> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value();
+}
+
+void func6(std::promise<void> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_exception(std::make_exception_ptr('c'));
+}
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        {
+            std::promise<T> p;
+            std::future<T> f = p.get_future();
+            support::make_test_thread(func1, std::move(p)).detach();
+            assert(f.valid());
+            assert(f.get() == 3);
+            assert(!f.valid());
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            std::promise<T> p;
+            std::future<T> f = p.get_future();
+            support::make_test_thread(func2, std::move(p)).detach();
+            try
+            {
+                assert(f.valid());
+                assert(f.get() == 3);
+                assert(false);
+            }
+            catch (int i)
+            {
+                assert(i == 3);
+            }
+            assert(!f.valid());
+        }
+#endif
+    }
+    {
+        typedef int& T;
+        {
+            std::promise<T> p;
+            std::future<T> f = p.get_future();
+            support::make_test_thread(func3, std::move(p)).detach();
+            assert(f.valid());
+            assert(f.get() == 5);
+            assert(!f.valid());
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            std::promise<T> p;
+            std::future<T> f = p.get_future();
+            support::make_test_thread(func4, std::move(p)).detach();
+            try
+            {
+                assert(f.valid());
+                assert(f.get() == 3);
+                assert(false);
+            }
+            catch (double i)
+            {
+                assert(i == 3.5);
+            }
+            assert(!f.valid());
+        }
+#endif
+    }
+    {
+        typedef void T;
+        {
+            std::promise<T> p;
+            std::future<T> f = p.get_future();
+            support::make_test_thread(func5, std::move(p)).detach();
+            assert(f.valid());
+            f.get();
+            assert(!f.valid());
+        }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            std::promise<T> p;
+            std::future<T> f = p.get_future();
+            support::make_test_thread(func6, std::move(p)).detach();
+            try
+            {
+                assert(f.valid());
+                f.get();
+                assert(false);
+            }
+            catch (char i)
+            {
+                assert(i == 'c');
+            }
+            assert(!f.valid());
+        }
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/move_assign.pass.cpp
new file mode 100644
index 0000000..0378e87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/move_assign.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, c++03
+
+// <future>
+
+// class future<R>
+
+// future& operator=(future&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::future<T> f0;
+        std::future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::future<T> f0;
+        std::future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::future<T> f0;
+        std::future<T> f;
+        f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/move_ctor.pass.cpp
new file mode 100644
index 0000000..168ba19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/move_ctor.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, c++03
+
+// <future>
+
+// class future<R>
+
+// future(future&& rhs);
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::future<T> f0;
+        std::future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::future<T> f0;
+        std::future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        std::future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::future<T> f0;
+        std::future<T> f = std::move(f0);
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/share.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/share.pass.cpp
new file mode 100644
index 0000000..4cc8e26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/share.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class future<R>
+
+// shared_future<R> share() &&;
+
+#include <future>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        static_assert( noexcept(f0.share()), "");
+        std::shared_future<T> f = f0.share();
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int T;
+        std::future<T> f0;
+        static_assert( noexcept(f0.share()), "");
+        std::shared_future<T> f = f0.share();
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef int& T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        static_assert( noexcept(f0.share()), "");
+        std::shared_future<T> f = f0.share();
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef int& T;
+        std::future<T> f0;
+        static_assert( noexcept(f0.share()), "");
+        std::shared_future<T> f = f0.share();
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+    {
+        typedef void T;
+        std::promise<T> p;
+        std::future<T> f0 = p.get_future();
+        static_assert( noexcept(f0.share()), "");
+        std::shared_future<T> f = f0.share();
+        assert(!f0.valid());
+        assert(f.valid());
+    }
+    {
+        typedef void T;
+        std::future<T> f0;
+        static_assert( noexcept(f0.share()), "");
+        std::shared_future<T> f = f0.share();
+        assert(!f0.valid());
+        assert(!f.valid());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait.pass.cpp
new file mode 100644
index 0000000..2385156
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class future<R>
+
+// void wait() const;
+
+#include <cassert>
+#include <chrono>
+#include <future>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+void func1(std::promise<int> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value(3);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    j = 5;
+    p.set_value(j);
+}
+
+void func5(std::promise<void> p)
+{
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    p.set_value();
+}
+
+template <typename T, typename F>
+void test(F func) {
+    typedef std::chrono::high_resolution_clock Clock;
+    typedef std::chrono::duration<double, std::milli> ms;
+
+    std::promise<T> p;
+    std::future<T> f = p.get_future();
+    support::make_test_thread(func, std::move(p)).detach();
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+    Clock::time_point t0 = Clock::now();
+    f.wait();
+    Clock::time_point t1 = Clock::now();
+    assert(f.valid());
+    assert(t1-t0 < ms(5));
+}
+
+int main(int, char**)
+{
+    test<int>(func1);
+    test<int&>(func3);
+    test<void>(func5);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait_for.pass.cpp
new file mode 100644
index 0000000..5d5107a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait_for.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// ALLOW_RETRIES: 3
+
+// <future>
+
+// class future<R>
+
+// template <class Rep, class Period>
+//   future_status
+//   wait_for(const chrono::duration<Rep, Period>& rel_time) const;
+
+#include <cassert>
+#include <chrono>
+#include <future>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+typedef std::chrono::milliseconds ms;
+
+static const ms sleepTime(500);
+static const ms waitTime(5000);
+
+void func1(std::promise<int> p)
+{
+  std::this_thread::sleep_for(sleepTime);
+  p.set_value(3);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+  std::this_thread::sleep_for(sleepTime);
+  j = 5;
+  p.set_value(j);
+}
+
+void func5(std::promise<void> p)
+{
+  std::this_thread::sleep_for(sleepTime);
+  p.set_value();
+}
+
+template <typename T, typename F>
+void test(F func, bool waitFirst) {
+  typedef std::chrono::high_resolution_clock Clock;
+  std::promise<T> p;
+  std::future<T> f = p.get_future();
+  Clock::time_point t1, t0 = Clock::now();
+  support::make_test_thread(func, std::move(p)).detach();
+  assert(f.valid());
+  assert(f.wait_for(ms(1)) == std::future_status::timeout);
+  assert(f.valid());
+  if (waitFirst) {
+    f.wait();
+    assert(f.valid());
+    t1 = Clock::now();
+    assert(f.wait_for(ms(waitTime)) == std::future_status::ready);
+    assert(f.valid());
+  } else {
+    assert(f.wait_for(ms(waitTime)) == std::future_status::ready);
+    assert(f.valid());
+    t1 = Clock::now();
+    f.wait();
+    assert(f.valid());
+  }
+  assert(t1 - t0 >= sleepTime);
+}
+
+int main(int, char**)
+{
+  test<int>(func1, true);
+  test<int&>(func3, true);
+  test<void>(func5, true);
+  test<int>(func1, false);
+  test<int&>(func3, false);
+  test<void>(func5, false);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait_until.pass.cpp
new file mode 100644
index 0000000..00c1b8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/futures/futures.unique_future/wait_until.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <future>
+
+// class future<R>
+
+// template <class Clock, class Duration>
+//   future_status
+//   wait_until(const chrono::time_point<Clock, Duration>& abs_time) const;
+
+#include <atomic>
+#include <cassert>
+#include <chrono>
+#include <future>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+enum class WorkerThreadState { Uninitialized, AllowedToRun, Exiting };
+typedef std::chrono::milliseconds ms;
+
+std::atomic<WorkerThreadState> thread_state(WorkerThreadState::Uninitialized);
+
+void set_worker_thread_state(WorkerThreadState state)
+{
+  thread_state.store(state, std::memory_order_relaxed);
+}
+
+void wait_for_worker_thread_state(WorkerThreadState state)
+{
+  while (thread_state.load(std::memory_order_relaxed) != state)
+    std::this_thread::yield();
+}
+
+void func1(std::promise<int> p)
+{
+  wait_for_worker_thread_state(WorkerThreadState::AllowedToRun);
+  p.set_value(3);
+  set_worker_thread_state(WorkerThreadState::Exiting);
+}
+
+int j = 0;
+
+void func3(std::promise<int&> p)
+{
+  wait_for_worker_thread_state(WorkerThreadState::AllowedToRun);
+  j = 5;
+  p.set_value(j);
+  set_worker_thread_state(WorkerThreadState::Exiting);
+}
+
+void func5(std::promise<void> p)
+{
+  wait_for_worker_thread_state(WorkerThreadState::AllowedToRun);
+  p.set_value();
+  set_worker_thread_state(WorkerThreadState::Exiting);
+}
+
+int main(int, char**)
+{
+  typedef std::chrono::high_resolution_clock Clock;
+  {
+    typedef int T;
+    std::promise<T> p;
+    std::future<T> f = p.get_future();
+    support::make_test_thread(func1, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::timeout);
+    assert(f.valid());
+
+    // allow the worker thread to produce the result and wait until the worker is done
+    set_worker_thread_state(WorkerThreadState::AllowedToRun);
+    wait_for_worker_thread_state(WorkerThreadState::Exiting);
+
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+  {
+    typedef int& T;
+    std::promise<T> p;
+    std::future<T> f = p.get_future();
+    support::make_test_thread(func3, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::timeout);
+    assert(f.valid());
+
+    // allow the worker thread to produce the result and wait until the worker is done
+    set_worker_thread_state(WorkerThreadState::AllowedToRun);
+    wait_for_worker_thread_state(WorkerThreadState::Exiting);
+
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+  {
+    typedef void T;
+    std::promise<T> p;
+    std::future<T> f = p.get_future();
+    support::make_test_thread(func5, std::move(p)).detach();
+    assert(f.valid());
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::timeout);
+    assert(f.valid());
+
+    // allow the worker thread to produce the result and wait until the worker is done
+    set_worker_thread_state(WorkerThreadState::AllowedToRun);
+    wait_for_worker_thread_state(WorkerThreadState::Exiting);
+
+    assert(f.wait_until(Clock::now() + ms(10)) == std::future_status::ready);
+    assert(f.valid());
+    f.wait();
+    assert(f.valid());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/macro.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/macro.pass.cpp
new file mode 100644
index 0000000..c435aa2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/macro.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// #define __STDCPP_THREADS__ 1
+
+#include <thread>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef __STDCPP_THREADS__
+#error __STDCPP_THREADS__ is not defined
+#elif __STDCPP_THREADS__ != 1
+#error __STDCPP_THREADS__ has the wrong value
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive.pass.cpp
new file mode 100644
index 0000000..c982c27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <barrier>
+
+#include <barrier>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::barrier<> b(2);
+
+  auto tok = b.arrive();
+  std::thread t = support::make_test_thread([&](){
+    (void)b.arrive();
+  });
+  b.wait(std::move(tok));
+  t.join();
+
+  auto tok2 = b.arrive(2);
+  b.wait(std::move(tok2));
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive_and_drop.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive_and_drop.pass.cpp
new file mode 100644
index 0000000..da75565
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive_and_drop.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <barrier>
+
+#include <barrier>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::barrier<> b(2);
+
+  std::thread t = support::make_test_thread([&](){
+    b.arrive_and_drop();
+  });
+
+  b.arrive_and_wait();
+  b.arrive_and_wait();
+  t.join();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive_and_wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive_and_wait.pass.cpp
new file mode 100644
index 0000000..14503b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/arrive_and_wait.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <barrier>
+
+#include <barrier>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::barrier<> b(2);
+
+  std::thread t = support::make_test_thread([&](){
+    for(int i = 0; i < 10; ++i)
+      b.arrive_and_wait();
+  });
+  for(int i = 0; i < 10; ++i)
+    b.arrive_and_wait();
+  t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/completion.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/completion.pass.cpp
new file mode 100644
index 0000000..7cc7ce9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/completion.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <barrier>
+
+#include <barrier>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  int x = 0;
+  auto comp = [&]() noexcept { x += 1; };
+  std::barrier<decltype(comp)> b(2, comp);
+
+  std::thread t = support::make_test_thread([&](){
+      for(int i = 0; i < 10; ++i)
+        b.arrive_and_wait();
+  });
+
+  for(int i = 0; i < 10; ++i)
+    b.arrive_and_wait();
+
+  assert(x == 10);
+  t.join();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/max.pass.cpp
new file mode 100644
index 0000000..ec03c5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.barrier/max.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <barrier>
+
+#include <barrier>
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  static_assert(std::barrier<>::max() > 0, "");
+  auto l = []() noexcept {};
+  static_assert(std::barrier<decltype(l)>::max() > 0, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/cv_status.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/cv_status.pass.cpp
new file mode 100644
index 0000000..b13c926
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/cv_status.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// enum class cv_status { no_timeout, timeout };
+
+#include <condition_variable>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(static_cast<int>(std::cv_status::no_timeout) == 0);
+    assert(static_cast<int>(std::cv_status::timeout)    == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit.pass.cpp
new file mode 100644
index 0000000..1f23c13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// notify_all_at_thread_exit(...) requires move semantics to transfer the unique_lock.
+// UNSUPPORTED: c++03
+
+// <condition_variable>
+//
+// void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable cv;
+std::mutex mut;
+
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::high_resolution_clock Clock;
+
+void func()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    std::notify_all_at_thread_exit(cv, std::move(lk));
+    std::this_thread::sleep_for(ms(300));
+}
+
+int main(int, char**)
+{
+    std::unique_lock<std::mutex> lk(mut);
+    std::thread t = support::make_test_thread(func);
+    Clock::time_point t0 = Clock::now();
+    cv.wait(lk);
+    Clock::time_point t1 = Clock::now();
+    assert(t1-t0 > ms(250));
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit_lwg3343.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit_lwg3343.pass.cpp
new file mode 100644
index 0000000..a49a438
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/notify_all_at_thread_exit_lwg3343.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// ALLOW_RETRIES: 3
+
+// notify_all_at_thread_exit(...) requires move semantics to transfer the unique_lock.
+// UNSUPPORTED: c++03
+
+// This is a regression test for LWG3343.
+//
+// <condition_variable>
+//
+// void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+#include <condition_variable>
+#include <cassert>
+#include <chrono>
+#include <memory>
+#include <mutex>
+#include <thread>
+
+union X {
+    X() : cv_() {}
+    ~X() {}
+    std::condition_variable cv_;
+    unsigned char bytes_[sizeof(std::condition_variable)];
+};
+
+void test()
+{
+    constexpr int N = 3;
+
+    X x;
+    std::mutex m;
+    int threads_active = N;
+
+    for (int i = 0; i < N; ++i) {
+        std::thread t = support::make_test_thread([&] {
+            // Signal thread completion
+            std::unique_lock<std::mutex> lk(m);
+            --threads_active;
+            std::notify_all_at_thread_exit(x.cv_, std::move(lk));
+            std::this_thread::sleep_for(std::chrono::milliseconds(1));
+        });
+        t.detach();
+    }
+
+    // Wait until all threads complete, i.e. until they've all
+    // decremented `threads_active` and then unlocked `m` at thread exit.
+    // It is possible that this `wait` may spuriously wake up,
+    // but it won't be able to continue until the last thread
+    // unlocks `m`.
+    {
+        std::unique_lock<std::mutex> lk(m);
+        x.cv_.wait(lk, [&]() { return threads_active == 0; });
+    }
+
+    // Destroy the condition_variable and shred the bytes.
+    // Simulate reusing the memory for something else.
+    x.cv_.~condition_variable();
+    for (unsigned char& c : x.bytes_) {
+        c = 0xcd;
+    }
+
+    DoNotOptimize(x.bytes_);
+
+    // Check that the bytes still have the same value we just wrote to them.
+    // If any thread wrongly unlocked `m` before calling cv.notify_all(), and
+    // cv.notify_all() writes to the memory of the cv, then we have a chance
+    // to detect the problem here.
+    int sum = 0;
+    for (unsigned char c : x.bytes_) {
+       sum += c;
+    }
+    DoNotOptimize(sum);
+    assert(sum == (0xcd * sizeof(std::condition_variable)));
+}
+
+int main(int, char**)
+{
+    for (int i = 0; i < 1000; ++i) {
+        test();
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/assign.compile.fail.cpp
new file mode 100644
index 0000000..a367051
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/assign.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <condition_variable>
+
+// class condition_variable;
+
+// condition_variable& operator=(const condition_variable&) = delete;
+
+#include <condition_variable>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::condition_variable cv0;
+    std::condition_variable cv1;
+    cv1 = cv0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/copy.compile.fail.cpp
new file mode 100644
index 0000000..f9d6076
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/copy.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <condition_variable>
+
+// class condition_variable;
+
+// condition_variable(const condition_variable&) = delete;
+
+#include <condition_variable>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::condition_variable cv0;
+    std::condition_variable cv1(cv0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/default.pass.cpp
new file mode 100644
index 0000000..9baa73e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable;
+
+// condition_variable();
+
+#include <condition_variable>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::condition_variable cv;
+    static_cast<void>(cv);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/destructor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/destructor.pass.cpp
new file mode 100644
index 0000000..530cc12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/destructor.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable;
+
+// ~condition_variable();
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable* cv;
+std::mutex m;
+typedef std::unique_lock<std::mutex> Lock;
+
+bool f_ready = false;
+bool g_ready = false;
+
+void f()
+{
+    Lock lk(m);
+    f_ready = true;
+    cv->notify_one();
+    delete cv;
+}
+
+void g()
+{
+    Lock lk(m);
+    g_ready = true;
+    cv->notify_one();
+    while (!f_ready)
+        cv->wait(lk);
+}
+
+int main(int, char**)
+{
+    cv = new std::condition_variable;
+    std::thread th2 = support::make_test_thread(g);
+    Lock lk(m);
+    while (!g_ready)
+        cv->wait(lk);
+    lk.unlock();
+    std::thread th1 = support::make_test_thread(f);
+    th1.join();
+    th2.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/notify_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/notify_all.pass.cpp
new file mode 100644
index 0000000..e0d587d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/notify_all.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable;
+
+// void notify_all();
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test0 = 0;
+int test1 = 0;
+int test2 = 0;
+
+void f1()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 == 1);
+    test1 = 2;
+}
+
+void f2()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    while (test2 == 0)
+        cv.wait(lk);
+    assert(test2 == 1);
+    test2 = 2;
+}
+
+int main(int, char**)
+{
+    std::thread t1 = support::make_test_thread(f1);
+    std::thread t2 = support::make_test_thread(f2);
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    {
+        std::unique_lock<std::mutex>lk(mut);
+        test1 = 1;
+        test2 = 1;
+    }
+    cv.notify_all();
+    {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        std::unique_lock<std::mutex>lk(mut);
+    }
+    t1.join();
+    t2.join();
+    assert(test1 == 2);
+    assert(test2 == 2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/notify_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/notify_one.pass.cpp
new file mode 100644
index 0000000..b0c476f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/notify_one.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable;
+
+// void notify_one();
+
+
+// NOTE: `notify_one` is just a wrapper around pthread_cond_signal, but
+// POSIX does not guarantee that one and only one thread will be woken:
+//
+// https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_cond_signal.html
+//
+// Quote:
+//     Multiple Awakenings by Condition Signal
+//     On a multi-processor, it may be impossible for an implementation of
+//     pthread_cond_signal() to avoid the unblocking of more than one thread
+//     blocked on a condition variable. For example...
+
+
+
+// NOTE: In previous versions of this test, `notify_one` was called WITHOUT
+// holding the lock but POSIX says (in the aforementioned URL) that:
+//     ...if predictable scheduling behavior is required, then that mutex shall
+//     be locked by the thread calling pthread_cond_broadcast() or
+//     pthread_cond_signal().
+
+
+#include <condition_variable>
+#include <atomic>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+
+std::condition_variable cv;
+std::mutex mut;
+
+std::atomic_int test1(0);
+std::atomic_int test2(0);
+std::atomic_int ready(2);
+std::atomic_int which(0);
+
+void f1()
+{
+  std::unique_lock<std::mutex> lk(mut);
+  assert(test1 == 0);
+  --ready;
+  while (test1 == 0)
+    cv.wait(lk);
+  which = 1;
+  assert(test1 == 1);
+  test1 = 2;
+}
+
+void f2()
+{
+  std::unique_lock<std::mutex> lk(mut);
+  assert(test2 == 0);
+  --ready;
+  while (test2 == 0)
+    cv.wait(lk);
+  which = 2;
+  assert(test2 == 1);
+  test2 = 2;
+}
+
+int main(int, char**)
+{
+  std::thread t1 = support::make_test_thread(f1);
+  std::thread t2 = support::make_test_thread(f2);
+  {
+    while (ready > 0)
+      std::this_thread::yield();
+    // At this point:
+    // 1) Both f1 and f2 have entered their condition variable wait.
+    // 2) Either f1 or f2 has the mutex locked and is about to wait.
+    std::unique_lock<std::mutex> lk(mut);
+    test1 = 1;
+    test2 = 1;
+    ready = 1;
+    cv.notify_one();
+  }
+  {
+    while (which == 0)
+      std::this_thread::yield();
+    std::unique_lock<std::mutex> lk(mut);
+    if (test1 == 2) {
+      assert(test2 == 1);
+      t1.join();
+      test1 = 0;
+    } else {
+      assert(test1 == 1);
+      assert(test2 == 2);
+      t2.join();
+      test2 = 0;
+    }
+    which = 0;
+    cv.notify_one();
+  }
+  {
+    while (which == 0)
+      std::this_thread::yield();
+    std::unique_lock<std::mutex> lk(mut);
+    if (test1 == 2) {
+      assert(test2 == 0);
+      t1.join();
+      test1 = 0;
+    } else {
+      assert(test1 == 0);
+      assert(test2 == 2);
+      t2.join();
+      test2 = 0;
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait.pass.cpp
new file mode 100644
index 0000000..1a8222b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable;
+
+// void wait(unique_lock<mutex>& lock);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+void f()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    while (test2 == 0)
+        cv.wait(lk);
+    assert(test2 != 0);
+}
+
+int main(int, char**)
+{
+    std::unique_lock<std::mutex> lk(mut);
+    std::thread t = support::make_test_thread(f);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 != 0);
+    test2 = 1;
+    lk.unlock();
+    cv.notify_one();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
new file mode 100644
index 0000000..4215020
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable;
+
+// template <class Rep, class Period>
+//     cv_status
+//     wait_for(unique_lock<mutex>& lock,
+//              const chrono::duration<Rep, Period>& rel_time);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+bool expect_timeout = false;
+
+void f()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds milliseconds;
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    Clock::time_point wait_end = t0 + milliseconds(250);
+    Clock::duration d;
+    do {
+        d = wait_end - Clock::now();
+        if (d <= milliseconds(0)) break;
+    } while (test2 == 0 && cv.wait_for(lk, d) == std::cv_status::no_timeout);
+    Clock::time_point t1 = Clock::now();
+    if (!expect_timeout)
+    {
+        assert(t1 - t0 < milliseconds(250));
+        assert(test2 != 0);
+    }
+    else
+    {
+        assert(t1 - t0 - milliseconds(250) < milliseconds(50));
+        assert(test2 == 0);
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::unique_lock<std::mutex> lk(mut);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    expect_timeout = true;
+    {
+        std::unique_lock<std::mutex> lk(mut);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
new file mode 100644
index 0000000..872bcb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable;
+
+// template <class Rep, class Period, class Predicate>
+//     bool
+//     wait_for(unique_lock<mutex>& lock,
+//              const chrono::duration<Rep, Period>& rel_time,
+//              Predicate pred);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class Pred
+{
+    int& i_;
+public:
+    explicit Pred(int& i) : i_(i) {}
+
+    bool operator()() {return i_ != 0;}
+};
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+int runs = 0;
+
+void f()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds milliseconds;
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    bool r = cv.wait_for(lk, milliseconds(250), Pred(test2));
+    ((void)r); // Prevent unused warning
+    Clock::time_point t1 = Clock::now();
+    if (runs == 0)
+    {
+        assert(t1 - t0 < milliseconds(250));
+        assert(test2 != 0);
+    }
+    else
+    {
+        assert(t1 - t0 - milliseconds(250) < milliseconds(50));
+        assert(test2 == 0);
+    }
+    ++runs;
+}
+
+int main(int, char**)
+{
+    {
+        std::unique_lock<std::mutex>lk(mut);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    {
+        std::unique_lock<std::mutex>lk(mut);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_pred.pass.cpp
new file mode 100644
index 0000000..15feba5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_pred.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable;
+
+// template <class Predicate>
+//   void wait(unique_lock<mutex>& lock, Predicate pred);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <functional>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+class Pred
+{
+    int& i_;
+public:
+    explicit Pred(int& i) : i_(i) {}
+
+    bool operator()() {return i_ != 0;}
+};
+
+void f()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    cv.wait(lk, Pred(test2));
+    assert(test2 != 0);
+}
+
+int main(int, char**)
+{
+    std::unique_lock<std::mutex>lk(mut);
+    std::thread t = support::make_test_thread(f);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 != 0);
+    test2 = 1;
+    lk.unlock();
+    cv.notify_one();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_until.pass.cpp
new file mode 100644
index 0000000..03205e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_until.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable;
+
+// template <class Clock, class Duration>
+//   cv_status
+//   wait_until(unique_lock<mutex>& lock,
+//              const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+struct TestClock
+{
+    typedef std::chrono::milliseconds duration;
+    typedef duration::rep             rep;
+    typedef duration::period          period;
+    typedef std::chrono::time_point<TestClock> time_point;
+    static const bool is_steady =  true;
+
+    static time_point now()
+    {
+        using namespace std::chrono;
+        return time_point(duration_cast<duration>(
+                steady_clock::now().time_since_epoch()
+                                                 ));
+    }
+};
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+int runs = 0;
+
+template <typename Clock>
+void f()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    typename Clock::time_point t0 = Clock::now();
+    typename Clock::time_point t = t0 + std::chrono::milliseconds(250);
+    while (test2 == 0 && cv.wait_until(lk, t) == std::cv_status::no_timeout)
+        ;
+    typename Clock::time_point t1 = Clock::now();
+    if (runs == 0)
+    {
+        assert(t1 - t0 < std::chrono::milliseconds(250));
+        assert(test2 != 0);
+    }
+    else
+    {
+        assert(t1 - t0 - std::chrono::milliseconds(250) < std::chrono::milliseconds(50));
+        assert(test2 == 0);
+    }
+    ++runs;
+}
+
+template <typename Clock>
+void run_test()
+{
+    runs = 0;
+    test1 = 0;
+    test2 = 0;
+    {
+        std::unique_lock<std::mutex>lk(mut);
+        std::thread t = support::make_test_thread(f<Clock>);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    {
+        std::unique_lock<std::mutex>lk(mut);
+        std::thread t = support::make_test_thread(f<Clock>);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+}
+
+int main(int, char**)
+{
+    run_test<TestClock>();
+    run_test<std::chrono::steady_clock>();
+    run_test<std::chrono::system_clock>();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_until_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_until_pred.pass.cpp
new file mode 100644
index 0000000..fb8bd6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvar/wait_until_pred.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable;
+
+// template <class Clock, class Duration, class Predicate>
+//     bool
+//     wait_until(unique_lock<mutex>& lock,
+//                const chrono::time_point<Clock, Duration>& abs_time,
+//                Predicate pred);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+struct Clock
+{
+    typedef std::chrono::milliseconds duration;
+    typedef duration::rep             rep;
+    typedef duration::period          period;
+    typedef std::chrono::time_point<Clock> time_point;
+    static const bool is_steady =  true;
+
+    static time_point now()
+    {
+        using namespace std::chrono;
+        return time_point(duration_cast<duration>(
+                steady_clock::now().time_since_epoch()
+                                                 ));
+    }
+};
+
+class Pred
+{
+    int& i_;
+public:
+    explicit Pred(int& i) : i_(i) {}
+
+    bool operator()() {return i_ != 0;}
+};
+
+std::condition_variable cv;
+std::mutex mut;
+
+int test1 = 0;
+int test2 = 0;
+
+int runs = 0;
+
+void f()
+{
+    std::unique_lock<std::mutex> lk(mut);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    Clock::time_point t = t0 + Clock::duration(250);
+    bool r = cv.wait_until(lk, t, Pred(test2));
+    Clock::time_point t1 = Clock::now();
+    if (runs == 0)
+    {
+        assert(t1 - t0 < Clock::duration(250));
+        assert(test2 != 0);
+        assert(r);
+    }
+    else
+    {
+        assert(t1 - t0 - Clock::duration(250) < Clock::duration(50));
+        assert(test2 == 0);
+        assert(!r);
+    }
+    ++runs;
+}
+
+int main(int, char**)
+{
+    {
+        std::unique_lock<std::mutex> lk(mut);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    {
+        std::unique_lock<std::mutex> lk(mut);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/assign.compile.fail.cpp
new file mode 100644
index 0000000..0c2adc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/assign.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// condition_variable_any& operator=(const condition_variable_any&) = delete;
+
+#include <condition_variable>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::condition_variable_any cv0;
+    std::condition_variable_any cv1;
+    cv1 = cv0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/copy.compile.fail.cpp
new file mode 100644
index 0000000..5aff93b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/copy.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// condition_variable_any(const condition_variable_any&) = delete;
+
+#include <condition_variable>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::condition_variable_any cv0;
+    std::condition_variable_any cv1(cv0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/default.pass.cpp
new file mode 100644
index 0000000..0cf70ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/default.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// condition_variable_any();
+
+#include <condition_variable>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::condition_variable_any cv;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/destructor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/destructor.pass.cpp
new file mode 100644
index 0000000..6f5111a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/destructor.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// ~condition_variable_any();
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable_any* cv;
+std::mutex m;
+
+bool f_ready = false;
+bool g_ready = false;
+
+void f()
+{
+    m.lock();
+    f_ready = true;
+    cv->notify_one();
+    delete cv;
+    m.unlock();
+}
+
+void g()
+{
+    m.lock();
+    g_ready = true;
+    cv->notify_one();
+    while (!f_ready)
+        cv->wait(m);
+    m.unlock();
+}
+
+int main(int, char**)
+{
+    cv = new std::condition_variable_any;
+    std::thread th2 = support::make_test_thread(g);
+    m.lock();
+    while (!g_ready)
+        cv->wait(m);
+    m.unlock();
+    std::thread th1 = support::make_test_thread(f);
+    th1.join();
+    th2.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/notify_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/notify_all.pass.cpp
new file mode 100644
index 0000000..1712490
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/notify_all.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// void notify_all();
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <vector>
+#include <atomic>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+const unsigned threadCount = 2;
+bool pleaseExit = false;
+std::atomic<unsigned> notReady;
+
+void helper() {
+  L1 lk(m0);
+  --notReady;
+  while (pleaseExit == false)
+    cv.wait(lk);
+}
+
+int main(int, char**)
+{
+  notReady = threadCount;
+  std::vector<std::thread> threads(threadCount);
+  for (unsigned i = 0; i < threadCount; i++)
+    threads[i] = support::make_test_thread(helper);
+  {
+    while (notReady > 0)
+      std::this_thread::yield();
+    // At this point, both threads have had a chance to acquire the lock and are
+    // either waiting on the condition variable or about to wait.
+    L1 lk(m0);
+    pleaseExit = true;
+    // POSIX does not guarantee reliable scheduling if notify_all is called
+    // without the lock being held.
+    cv.notify_all();
+  }
+  // The test will hang if not all of the threads were woken.
+  for (unsigned i = 0; i < threadCount; i++)
+    threads[i].join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/notify_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/notify_one.pass.cpp
new file mode 100644
index 0000000..4fc436b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/notify_one.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// void notify_one();
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test0 = 0;
+int test1 = 0;
+int test2 = 0;
+
+void f1()
+{
+    L1 lk(m0);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 == 1);
+    test1 = 2;
+}
+
+void f2()
+{
+    L1 lk(m0);
+    assert(test2 == 0);
+    while (test2 == 0)
+        cv.wait(lk);
+    assert(test2 == 1);
+    test2 = 2;
+}
+
+int main(int, char**)
+{
+    std::thread t1 = support::make_test_thread(f1);
+    std::thread t2 = support::make_test_thread(f2);
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    {
+        L1 lk(m0);
+        test1 = 1;
+        test2 = 1;
+    }
+    cv.notify_one();
+    {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        L1 lk(m0);
+    }
+    if (test1 == 2)
+    {
+        t1.join();
+        test1 = 0;
+    }
+    else if (test2 == 2)
+    {
+        t2.join();
+        test2 = 0;
+    }
+    else
+        assert(false);
+    cv.notify_one();
+    {
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        L1 lk(m0);
+    }
+    if (test1 == 2)
+    {
+        t1.join();
+        test1 = 0;
+    }
+    else if (test2 == 2)
+    {
+        t2.join();
+        test2 = 0;
+    }
+    else
+        assert(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait.pass.cpp
new file mode 100644
index 0000000..ffce91b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// template <class Lock>
+//   void wait(Lock& lock);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test1 = 0;
+int test2 = 0;
+
+void f()
+{
+    L1 lk(m0);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    while (test2 == 0)
+        cv.wait(lk);
+    assert(test2 != 0);
+}
+
+int main(int, char**)
+{
+    L1 lk(m0);
+    std::thread t = support::make_test_thread(f);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 != 0);
+    test2 = 1;
+    lk.unlock();
+    cv.notify_one();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_for.pass.cpp
new file mode 100644
index 0000000..95acef9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_for.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// template <class Lock, class Rep, class Period>
+//   cv_status
+//   wait_for(Lock& lock, const chrono::duration<Rep, Period>& rel_time);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test1 = 0;
+int test2 = 0;
+
+bool expect_timeout = false;
+
+void f()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds milliseconds;
+    L1 lk(m0);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    Clock::time_point wait_end = t0 + milliseconds(250);
+    Clock::duration d;
+    do {
+        d = wait_end - Clock::now();
+        if (d <= milliseconds(0)) break;
+    } while (test2 == 0 && cv.wait_for(lk, d) == std::cv_status::no_timeout);
+    Clock::time_point t1 = Clock::now();
+    if (!expect_timeout)
+    {
+        assert(t1 - t0 < milliseconds(250));
+        assert(test2 != 0);
+    }
+    else
+    {
+        assert(t1 - t0 - milliseconds(250) < milliseconds(50));
+        assert(test2 == 0);
+    }
+}
+
+int main(int, char**)
+{
+    {
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    expect_timeout = true;
+    {
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_for_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_for_pred.pass.cpp
new file mode 100644
index 0000000..0b56002
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_for_pred.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// template <class Lock, class Rep, class Period, class Predicate>
+//   bool
+//   wait_for(Lock& lock, const chrono::duration<Rep, Period>& rel_time,
+//            Predicate pred);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class Pred
+{
+    int& i_;
+public:
+    explicit Pred(int& i) : i_(i) {}
+
+    bool operator()() {return i_ != 0;}
+};
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test1 = 0;
+int test2 = 0;
+
+int runs = 0;
+bool expect_result = false;
+
+void f()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds milliseconds;
+    L1 lk(m0);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    bool result = cv.wait_for(lk, milliseconds(250), Pred(test2));
+    assert(result == expect_result);
+    Clock::time_point t1 = Clock::now();
+    if (runs == 0)
+    {
+        assert(t1 - t0 < milliseconds(250));
+        assert(test2 != 0);
+    }
+    else
+    {
+        assert(t1 - t0 - milliseconds(250) < milliseconds(50));
+        assert(test2 == 0);
+    }
+    ++runs;
+}
+
+int main(int, char**)
+{
+    {
+        expect_result = true;
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    {
+        expect_result = false;
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_pred.pass.cpp
new file mode 100644
index 0000000..a5e2813
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_pred.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// template <class Lock, class Predicate>
+//   void wait(Lock& lock, Predicate pred);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <functional>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test1 = 0;
+int test2 = 0;
+
+class Pred
+{
+    int& i_;
+public:
+    explicit Pred(int& i) : i_(i) {}
+
+    bool operator()() {return i_ != 0;}
+};
+
+void f()
+{
+    L1 lk(m0);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    cv.wait(lk, Pred(test2));
+    assert(test2 != 0);
+}
+
+int main(int, char**)
+{
+    L1 lk(m0);
+    std::thread t = support::make_test_thread(f);
+    assert(test1 == 0);
+    while (test1 == 0)
+        cv.wait(lk);
+    assert(test1 != 0);
+    test2 = 1;
+    lk.unlock();
+    cv.notify_one();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_terminates.sh.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_terminates.sh.cpp
new file mode 100644
index 0000000..fd61634
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_terminates.sh.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: no-threads
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// RUN: %{build}
+// RUN: %{run} 1
+// RUN: %{run} 2
+// RUN: %{run} 3
+// RUN: %{run} 4
+// RUN: %{run} 5
+// RUN: %{run} 6
+
+// -----------------------------------------------------------------------------
+// Overview
+//   Check that std::terminate is called if wait(...) fails to meet its post
+//   conditions. This can happen when reacquiring the mutex throws
+//   an exception.
+//
+//  The following methods are tested within this file
+//   1.  void wait(Lock& lock);
+//   2.  void wait(Lock& lock, Pred);
+//   3.  void wait_for(Lock& lock, Duration);
+//   4.  void wait_for(Lock& lock, Duration, Pred);
+//   5.  void wait_until(Lock& lock, TimePoint);
+//   6.  void wait_until(Lock& lock, TimePoint, Pred);
+//
+// Plan
+//   1 Create a mutex type, 'ThrowingMutex', that throws when the lock is acquired
+//     for the *second* time.
+//
+//   2 Replace the terminate handler with one that exits with a '0' exit code.
+//
+//   3 Create a 'condition_variable_any' object 'cv' and a 'ThrowingMutex'
+//     object 'm' and lock 'm'.
+//
+//   4 Start a thread 'T2' that will notify 'cv' once 'm' has been unlocked.
+//
+//   5 From the main thread call the specified wait method on 'cv' with 'm'.
+//     When 'T2' notifies 'cv' and the wait method attempts to re-lock
+//    'm' an exception will be thrown from 'm.lock()'.
+//
+//   6 Check that control flow does not return from the wait method and that
+//     terminate is called (If the program exits with a 0 exit code we know
+//     that terminate has been called)
+
+
+#include <condition_variable>
+#include <atomic>
+#include <thread>
+#include <chrono>
+#include <string>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+
+void my_terminate() {
+  std::_Exit(0); // Use _Exit to prevent cleanup from taking place.
+}
+
+// The predicate used in the cv.wait calls.
+bool pred = false;
+bool pred_function() {
+  return pred == true;
+}
+
+class ThrowingMutex
+{
+  std::atomic_bool locked;
+  unsigned state = 0;
+  ThrowingMutex(const ThrowingMutex&) = delete;
+  ThrowingMutex& operator=(const ThrowingMutex&) = delete;
+public:
+  ThrowingMutex() {
+    locked = false;
+  }
+  ~ThrowingMutex() = default;
+
+  void lock() {
+    locked = true;
+    if (++state == 2) {
+      assert(pred); // Check that we actually waited until we were signaled.
+      throw 1;  // this throw should end up calling terminate()
+    }
+  }
+
+  void unlock() { locked = false; }
+  bool isLocked() const { return locked == true; }
+};
+
+ThrowingMutex mut;
+std::condition_variable_any cv;
+
+void signal_me() {
+  while (mut.isLocked()) {} // wait until T1 releases mut inside the cv.wait call.
+  pred = true;
+  cv.notify_one();
+}
+
+typedef std::chrono::system_clock Clock;
+typedef std::chrono::milliseconds MS;
+
+int main(int argc, char **argv) {
+  assert(argc == 2);
+  int id = std::stoi(argv[1]);
+  assert(id >= 1 && id <= 6);
+  std::set_terminate(my_terminate); // set terminate after std::stoi because it can throw.
+  MS wait(250);
+  try {
+    mut.lock();
+    assert(pred == false);
+    support::make_test_thread(signal_me).detach();
+    switch (id) {
+      case 1: cv.wait(mut); break;
+      case 2: cv.wait(mut, pred_function); break;
+      case 3: cv.wait_for(mut, wait); break;
+      case 4: cv.wait_for(mut, wait, pred_function); break;
+      case 5: cv.wait_until(mut, Clock::now() + wait); break;
+      case 6: cv.wait_until(mut, Clock::now() + wait, pred_function); break;
+      default: assert(false);
+    }
+  } catch (...) {}
+  assert(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_until.pass.cpp
new file mode 100644
index 0000000..0f23343
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_until.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// template <class Lock, class Clock, class Duration>
+//   cv_status
+//   wait_until(Lock& lock, const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+struct Clock
+{
+    typedef std::chrono::milliseconds duration;
+    typedef duration::rep             rep;
+    typedef duration::period          period;
+    typedef std::chrono::time_point<Clock> time_point;
+    static const bool is_steady =  true;
+
+    static time_point now()
+    {
+        using namespace std::chrono;
+        return time_point(duration_cast<duration>(
+                steady_clock::now().time_since_epoch()
+                                                 ));
+    }
+};
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test1 = 0;
+int test2 = 0;
+
+int runs = 0;
+
+void f()
+{
+    L1 lk(m0);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    Clock::time_point t = t0 + Clock::duration(250);
+    while (test2 == 0 && cv.wait_until(lk, t) == std::cv_status::no_timeout)
+        ;
+    Clock::time_point t1 = Clock::now();
+    if (runs == 0)
+    {
+        assert(t1 - t0 < Clock::duration(250));
+        assert(test2 != 0);
+    }
+    else
+    {
+        assert(t1 - t0 - Clock::duration(250) < Clock::duration(50));
+        assert(test2 == 0);
+    }
+    ++runs;
+}
+
+int main(int, char**)
+{
+    {
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    {
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_until_pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_until_pred.pass.cpp
new file mode 100644
index 0000000..aa60ae4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.condition/thread.condition.condvarany/wait_until_pred.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <condition_variable>
+
+// class condition_variable_any;
+
+// template <class Lock, class Duration, class Predicate>
+//     bool
+//     wait_until(Lock& lock,
+//                const chrono::time_point<Clock, Duration>& abs_time,
+//                Predicate pred);
+
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+struct Clock
+{
+    typedef std::chrono::milliseconds duration;
+    typedef duration::rep             rep;
+    typedef duration::period          period;
+    typedef std::chrono::time_point<Clock> time_point;
+    static const bool is_steady =  true;
+
+    static time_point now()
+    {
+        using namespace std::chrono;
+        return time_point(duration_cast<duration>(
+                steady_clock::now().time_since_epoch()
+                                                 ));
+    }
+};
+
+class Pred
+{
+    int& i_;
+public:
+    explicit Pred(int& i) : i_(i) {}
+
+    bool operator()() {return i_ != 0;}
+};
+
+std::condition_variable_any cv;
+
+typedef std::timed_mutex L0;
+typedef std::unique_lock<L0> L1;
+
+L0 m0;
+
+int test1 = 0;
+int test2 = 0;
+
+int runs = 0;
+
+void f()
+{
+    L1 lk(m0);
+    assert(test2 == 0);
+    test1 = 1;
+    cv.notify_one();
+    Clock::time_point t0 = Clock::now();
+    Clock::time_point t = t0 + Clock::duration(250);
+    bool r = cv.wait_until(lk, t, Pred(test2));
+    Clock::time_point t1 = Clock::now();
+    if (runs == 0)
+    {
+        assert(t1 - t0 < Clock::duration(250));
+        assert(test2 != 0);
+        assert(r);
+    }
+    else
+    {
+        assert(t1 - t0 - Clock::duration(250) < Clock::duration(50));
+        assert(test2 == 0);
+        assert(!r);
+    }
+    ++runs;
+}
+
+int main(int, char**)
+{
+    {
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        test2 = 1;
+        lk.unlock();
+        cv.notify_one();
+        t.join();
+    }
+    test1 = 0;
+    test2 = 0;
+    {
+        L1 lk(m0);
+        std::thread t = support::make_test_thread(f);
+        assert(test1 == 0);
+        while (test1 == 0)
+            cv.wait(lk);
+        assert(test1 != 0);
+        lk.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.latch/arrive_and_wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/arrive_and_wait.pass.cpp
new file mode 100644
index 0000000..37b0c6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/arrive_and_wait.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <latch>
+
+#include <latch>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::latch l(2);
+
+  std::thread t = support::make_test_thread([&](){
+      l.arrive_and_wait();
+  });
+  l.arrive_and_wait();
+  t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.latch/count_down.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/count_down.pass.cpp
new file mode 100644
index 0000000..fe9578b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/count_down.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <latch>
+
+#include <latch>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::latch l(2);
+
+  l.count_down();
+  std::thread t = support::make_test_thread([&](){
+    l.count_down();
+  });
+  l.wait();
+  t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.latch/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/max.pass.cpp
new file mode 100644
index 0000000..8b9176c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/max.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <latch>
+
+#include <latch>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  static_assert(std::latch::max() > 0, "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.latch/try_wait.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/try_wait.pass.cpp
new file mode 100644
index 0000000..6533b6c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.latch/try_wait.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <latch>
+
+#include <latch>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::latch l(1);
+
+  l.count_down();
+  bool const b = l.try_wait();
+  assert(b);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/lock.pass.cpp
new file mode 100644
index 0000000..c6866fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/lock.pass.cpp
@@ -0,0 +1,527 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// This test hangs forever when built against libstdc++ (Oct 2016).
+// UNSUPPORTED: stdlib=libstdc++
+
+// This test isn't quite standards-conforming: it's testing our specific
+// algorithm, where when lx.try_lock() fails we start the next attempt
+// with an unconditional lx.lock(). Thus our algorithm can handle a list
+// of mutexes where at-most-one of them is of the evil type `class L1`,
+// but will loop forever if two or more of them are `class L1`.
+
+// <mutex>
+
+// template <class L1, class L2, class... L3>
+//   void lock(L1&, L2&, L3&...);
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+class L0
+{
+    bool locked_;
+
+public:
+    L0() : locked_(false) {}
+
+    void lock()
+    {
+        locked_ = true;
+    }
+
+    bool try_lock()
+    {
+        locked_ = true;
+        return locked_;
+    }
+
+    void unlock() {locked_ = false;}
+
+    bool locked() const {return locked_;}
+};
+
+class L1
+{
+    bool locked_;
+
+public:
+    L1() : locked_(false) {}
+
+    void lock()
+    {
+        locked_ = true;
+    }
+
+    bool try_lock()
+    {
+        locked_ = false;
+        return locked_;
+    }
+
+    void unlock() {locked_ = false;}
+
+    bool locked() const {return locked_;}
+};
+
+class L2
+{
+    bool locked_;
+
+public:
+    L2() : locked_(false) {}
+
+    void lock()
+    {
+        TEST_THROW(1);
+    }
+
+    bool try_lock()
+    {
+        TEST_THROW(1);
+        return locked_;
+    }
+
+    void unlock() {locked_ = false;}
+
+    bool locked() const {return locked_;}
+};
+
+int main(int, char**)
+{
+    {
+        L0 l0;
+        L0 l1;
+        std::lock(l0, l1);
+        assert(l0.locked());
+        assert(l1.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        std::lock(l0, l1);
+        assert(l0.locked());
+        assert(l1.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        std::lock(l0, l1);
+        assert(l0.locked());
+        assert(l1.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L2 l1;
+        try
+        {
+            std::lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        try
+        {
+            std::lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+    {
+        L1 l0;
+        L2 l1;
+        try
+        {
+            std::lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+    {
+        L2 l0;
+        L1 l1;
+        try
+        {
+            std::lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+    {
+        L2 l0;
+        L2 l1;
+        try
+        {
+            std::lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        std::lock(l0, l1, l2);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L2 l0;
+        L2 l1;
+        L2 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+#endif
+    {
+        L0 l0;
+        L0 l1;
+        L1 l2;
+        std::lock(l0, l1, l2);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        L0 l2;
+        std::lock(l0, l1, l2);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        L0 l2;
+        std::lock(l0, l1, l2);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L0 l1;
+        L2 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L0 l0;
+        L2 l1;
+        L0 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        L0 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L2 l1;
+        L0 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        L2 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L0 l0;
+        L2 l1;
+        L2 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L2 l1;
+        L1 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L1 l1;
+        L2 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L1 l0;
+        L2 l1;
+        L2 l2;
+        try
+        {
+            std::lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        L0 l3;
+        std::lock(l0, l1, l2, l3);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+        assert(l3.locked());
+    }
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        L1 l3;
+        std::lock(l0, l1, l2, l3);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+        assert(l3.locked());
+    }
+    {
+        L0 l0;
+        L0 l1;
+        L1 l2;
+        L0 l3;
+        std::lock(l0, l1, l2, l3);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+        assert(l3.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        L0 l2;
+        L0 l3;
+        std::lock(l0, l1, l2, l3);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+        assert(l3.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        L0 l2;
+        L0 l3;
+        std::lock(l0, l1, l2, l3);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+        assert(l3.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        L2 l3;
+        try
+        {
+            std::lock(l0, l1, l2, l3);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+            assert(!l3.locked());
+        }
+    }
+    {
+        L0 l0;
+        L0 l1;
+        L2 l2;
+        L0 l3;
+        try
+        {
+            std::lock(l0, l1, l2, l3);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+            assert(!l3.locked());
+        }
+    }
+    {
+        L0 l0;
+        L2 l1;
+        L0 l2;
+        L0 l3;
+        try
+        {
+            std::lock(l0, l1, l2, l3);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+            assert(!l3.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        L0 l2;
+        L0 l3;
+        try
+        {
+            std::lock(l0, l1, l2, l3);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+            assert(!l3.locked());
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/try_lock.pass.cpp
new file mode 100644
index 0000000..ac508b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock.algorithm/try_lock.pass.cpp
@@ -0,0 +1,527 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class L1, class L2, class... L3>
+//   int try_lock(L1&, L2&, L3&...);
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+class L0
+{
+    bool locked_;
+
+public:
+    L0() : locked_(false) {}
+
+    bool try_lock()
+    {
+        locked_ = true;
+        return locked_;
+    }
+
+    void unlock() {locked_ = false;}
+
+    bool locked() const {return locked_;}
+};
+
+class L1
+{
+    bool locked_;
+
+public:
+    L1() : locked_(false) {}
+
+    bool try_lock()
+    {
+        locked_ = false;
+        return locked_;
+    }
+
+    void unlock() {locked_ = false;}
+
+    bool locked() const {return locked_;}
+};
+
+class L2
+{
+    bool locked_;
+
+public:
+    L2() : locked_(false) {}
+
+    bool try_lock()
+    {
+        TEST_THROW(1);
+        return locked_;
+    }
+
+    void unlock() {locked_ = false;}
+
+    bool locked() const {return locked_;}
+};
+
+int main(int, char**)
+{
+    {
+        L0 l0;
+        L0 l1;
+        assert(std::try_lock(l0, l1) == -1);
+        assert(l0.locked());
+        assert(l1.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        assert(std::try_lock(l0, l1) == 1);
+        assert(!l0.locked());
+        assert(!l1.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        assert(std::try_lock(l0, l1) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L2 l1;
+        try
+        {
+            (void)std::try_lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        try
+        {
+            (void)std::try_lock(l0, l1);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+        }
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        assert(std::try_lock(l0, l1, l2) == -1);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+    }
+    {
+        L1 l0;
+        L1 l1;
+        L1 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L2 l0;
+        L2 l1;
+        L2 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L0 l0;
+        L1 l1;
+        L2 l2;
+        assert(std::try_lock(l0, l1, l2) == 1);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+#endif
+    {
+        L0 l0;
+        L0 l1;
+        L1 l2;
+        assert(std::try_lock(l0, l1, l2) == 2);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        L0 l2;
+        assert(std::try_lock(l0, l1, l2) == 1);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        L0 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L0 l1;
+        L2 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L0 l0;
+        L2 l1;
+        L0 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        L0 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+#endif
+    {
+        L1 l0;
+        L1 l1;
+        L0 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        L1 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        L1 l2;
+        assert(std::try_lock(l0, l1, l2) == 1);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        L1 l0;
+        L1 l1;
+        L2 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L1 l0;
+        L2 l1;
+        L1 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L2 l0;
+        L1 l1;
+        L1 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L2 l1;
+        L0 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L0 l1;
+        L2 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L0 l0;
+        L2 l1;
+        L2 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L2 l1;
+        L1 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L1 l1;
+        L2 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L1 l0;
+        L2 l1;
+        L2 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L0 l0;
+        L2 l1;
+        L1 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L1 l0;
+        L0 l1;
+        L2 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L1 l0;
+        L2 l1;
+        L0 l2;
+        assert(std::try_lock(l0, l1, l2) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+    }
+    {
+        L2 l0;
+        L0 l1;
+        L1 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+    {
+        L2 l0;
+        L1 l1;
+        L0 l2;
+        try
+        {
+            (void)std::try_lock(l0, l1, l2);
+            assert(false);
+        }
+        catch (int)
+        {
+            assert(!l0.locked());
+            assert(!l1.locked());
+            assert(!l2.locked());
+        }
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        L0 l3;
+        assert(std::try_lock(l0, l1, l2, l3) == -1);
+        assert(l0.locked());
+        assert(l1.locked());
+        assert(l2.locked());
+        assert(l3.locked());
+    }
+    {
+        L1 l0;
+        L0 l1;
+        L0 l2;
+        L0 l3;
+        assert(std::try_lock(l0, l1, l2, l3) == 0);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+        assert(!l3.locked());
+    }
+    {
+        L0 l0;
+        L1 l1;
+        L0 l2;
+        L0 l3;
+        assert(std::try_lock(l0, l1, l2, l3) == 1);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+        assert(!l3.locked());
+    }
+    {
+        L0 l0;
+        L0 l1;
+        L1 l2;
+        L0 l3;
+        assert(std::try_lock(l0, l1, l2, l3) == 2);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+        assert(!l3.locked());
+    }
+    {
+        L0 l0;
+        L0 l1;
+        L0 l2;
+        L1 l3;
+        assert(std::try_lock(l0, l1, l2, l3) == 3);
+        assert(!l0.locked());
+        assert(!l1.locked());
+        assert(!l2.locked());
+        assert(!l3.locked());
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/adopt_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/adopt_lock.pass.cpp
new file mode 100644
index 0000000..cb105f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/adopt_lock.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// lock_guard(mutex_type& m, adopt_lock_t);
+
+#include <mutex>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+void do_try_lock() {
+  assert(m.try_lock() == false);
+}
+
+int main(int, char**) {
+  {
+    m.lock();
+    std::lock_guard<std::mutex> lg(m, std::adopt_lock);
+    std::thread t = support::make_test_thread(do_try_lock);
+    t.join();
+  }
+
+  m.lock();
+  m.unlock();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
new file mode 100644
index 0000000..2d0f438
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/assign.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// lock_guard& operator=(lock_guard const&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::mutex m0;
+    std::mutex m1;
+    std::lock_guard<std::mutex> lg0(m0);
+    std::lock_guard<std::mutex> lg(m1);
+    lg = lg0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
new file mode 100644
index 0000000..e99517e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/copy.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// lock_guard(lock_guard const&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::mutex m;
+    std::lock_guard<std::mutex> lg0(m);
+    std::lock_guard<std::mutex> lg(lg0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..b754417
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/implicit_ctad.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <mutex>
+
+// lock_guard
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::mutex mutex;
+  {
+    std::lock_guard lock(mutex);
+    ASSERT_SAME_TYPE(decltype(lock), std::lock_guard<std::mutex>);
+  }
+
+  return 0;
+}
+
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.fail.cpp
new file mode 100644
index 0000000..82f6728
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// explicit lock_guard(mutex_type& m);
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::mutex m;
+    std::lock_guard<std::mutex> lg = m; // expected-error{{no viable conversion}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
new file mode 100644
index 0000000..6025b0c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/mutex.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class lock_guard;
+
+// explicit lock_guard(mutex_type& m);
+
+// template<class _Mutex> lock_guard(lock_guard<_Mutex>)
+//     -> lock_guard<_Mutex>;  // C++17
+
+#include <mutex>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+void do_try_lock() {
+  assert(m.try_lock() == false);
+}
+
+int main(int, char**) {
+  {
+    std::lock_guard<std::mutex> lg(m);
+    std::thread t = support::make_test_thread(do_try_lock);
+    t.join();
+  }
+
+  m.lock();
+  m.unlock();
+
+#if TEST_STD_VER >= 17
+  std::lock_guard lg(m);
+  static_assert((std::is_same<decltype(lg), std::lock_guard<decltype(m)>>::value), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/types.pass.cpp
new file mode 100644
index 0000000..8b10d9d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.guard/types.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex>
+// class lock_guard
+// {
+// public:
+//     typedef Mutex mutex_type;
+//     ...
+// };
+
+#include <mutex>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::lock_guard<std::mutex>::mutex_type,
+                   std::mutex>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
new file mode 100644
index 0000000..83b29ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/adopt_lock.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <mutex>
+
+// template <class ...Mutex> class scoped_lock;
+
+// scoped_lock(adopt_lock_t, Mutex&...);
+
+#include <mutex>
+#include <cassert>
+#include "test_macros.h"
+
+struct TestMutex {
+    bool locked = false;
+    TestMutex() = default;
+
+    void lock() { assert(!locked); locked = true; }
+    bool try_lock() { if (locked) return false; locked = true; return true; }
+    void unlock() { assert(locked); locked = false; }
+
+    TestMutex(TestMutex const&) = delete;
+    TestMutex& operator=(TestMutex const&) = delete;
+};
+
+int main(int, char**)
+{
+    {
+        using LG = std::scoped_lock<>;
+        LG lg(std::adopt_lock);
+    }
+    {
+        TestMutex m1;
+        using LG = std::scoped_lock<TestMutex>;
+        m1.lock();
+        {
+            LG lg(std::adopt_lock, m1);
+            assert(m1.locked);
+        }
+        assert(!m1.locked);
+    }
+    {
+        TestMutex m1, m2;
+        using LG = std::scoped_lock<TestMutex, TestMutex>;
+        m1.lock(); m2.lock();
+        {
+            LG lg(std::adopt_lock, m1, m2);
+            assert(m1.locked && m2.locked);
+        }
+        assert(!m1.locked && !m2.locked);
+    }
+    {
+        TestMutex m1, m2, m3;
+        using LG = std::scoped_lock<TestMutex, TestMutex, TestMutex>;
+        m1.lock(); m2.lock(); m3.lock();
+        {
+            LG lg(std::adopt_lock, m1, m2, m3);
+            assert(m1.locked && m2.locked && m3.locked);
+        }
+        assert(!m1.locked && !m2.locked && !m3.locked);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/assign.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/assign.fail.cpp
new file mode 100644
index 0000000..9d5fd60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/assign.fail.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <mutex>
+
+// template <class ...Mutex> class scoped_lock;
+
+// scoped_lock& operator=(scoped_lock const&) = delete;
+
+#include <mutex>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using M = std::mutex;
+    M m0, m1, m2;
+    M om0, om1, om2;
+    {
+        using LG = std::scoped_lock<>;
+        LG lg1, lg2;
+        lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
+    }
+    {
+        using LG = std::scoped_lock<M>;
+        LG lg1(m0);
+        LG lg2(om0);
+        lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
+    }
+    {
+        using LG = std::scoped_lock<M, M>;
+        LG lg1(m0, m1);
+        LG lg2(om0, om1);
+        lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
+    }
+    {
+        using LG = std::scoped_lock<M, M, M>;
+        LG lg1(m0, m1, m2);
+        LG lg2(om0, om1, om2);
+        lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/copy.fail.cpp
new file mode 100644
index 0000000..37e60b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/copy.fail.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <mutex>
+
+// template <class ...Mutex> class scoped_lock;
+
+// scoped_lock(scoped_lock const&) = delete;
+
+#include <mutex>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using M = std::mutex;
+    M m0, m1, m2;
+    {
+        using LG = std::scoped_lock<>;
+        const LG Orig;
+        LG Copy(Orig); // expected-error{{call to deleted constructor of 'LG'}}
+    }
+    {
+        using LG = std::scoped_lock<M>;
+        const LG Orig(m0);
+        LG Copy(Orig); // expected-error{{call to deleted constructor of 'LG'}}
+    }
+    {
+        using LG = std::scoped_lock<M, M>;
+        const LG Orig(m0, m1);
+        LG Copy(Orig); // expected-error{{call to deleted constructor of 'LG'}}
+    }
+    {
+        using LG = std::scoped_lock<M, M, M>;
+        const LG Orig(m0, m1, m2);
+        LG Copy(Orig); // expected-error{{call to deleted constructor of 'LG'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..7305b48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/implicit_ctad.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <mutex>
+
+// scoped_lock
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::mutex m1;
+  std::recursive_mutex m2;
+  std::recursive_timed_mutex m3;
+  {
+    std::scoped_lock lock(m1);
+    ASSERT_SAME_TYPE(decltype(lock), std::scoped_lock<std::mutex>);
+  }
+  {
+    std::scoped_lock lock(m1, m2);
+    ASSERT_SAME_TYPE(decltype(lock), std::scoped_lock<std::mutex, std::recursive_mutex>);
+  }
+  {
+    std::scoped_lock lock(m1, m2, m3);
+    ASSERT_SAME_TYPE(decltype(lock), std::scoped_lock<std::mutex, std::recursive_mutex, std::recursive_timed_mutex>);
+  }
+
+  return 0;
+}
+
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.fail.cpp
new file mode 100644
index 0000000..44f1ee3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.fail.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <mutex>
+
+// template <class ...Mutex> class scoped_lock;
+
+// explicit scoped_lock(Mutex&...);
+
+#include <mutex>
+#include "test_macros.h"
+
+template <class LG>
+void test_conversion(LG) {}
+
+int main(int, char**)
+{
+    using M = std::mutex;
+    M m0, m1, m2;
+    M n0, n1, n2;
+    {
+        using LG = std::scoped_lock<>;
+        LG lg = {}; // expected-error{{chosen constructor is explicit in copy-initialization}}
+        test_conversion<LG>({}); // expected-error{{no matching function for call}}
+        ((void)lg);
+    }
+    {
+        using LG = std::scoped_lock<M>;
+        LG lg = {m0}; // expected-error{{chosen constructor is explicit in copy-initialization}}
+        test_conversion<LG>({n0}); // expected-error{{no matching function for call}}
+        ((void)lg);
+    }
+    {
+        using LG = std::scoped_lock<M, M>;
+        LG lg = {m0, m1}; // expected-error{{chosen constructor is explicit in copy-initialization}}
+        test_conversion<LG>({n0, n1}); // expected-error{{no matching function for call}}
+        ((void)lg);
+    }
+    {
+        using LG = std::scoped_lock<M, M, M>;
+        LG lg = {m0, m1, m2}; // expected-error{{chosen constructor is explicit in copy-initialization}}
+        test_conversion<LG>({n0, n1, n2}); // expected-error{{no matching function for call}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
new file mode 100644
index 0000000..48a96f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <mutex>
+
+// template <class ...Mutex> class scoped_lock;
+
+// explicit scoped_lock(mutex_type& m);
+
+#include <mutex>
+#include <cassert>
+#include "test_macros.h"
+
+struct TestMutex {
+    bool locked = false;
+    TestMutex() = default;
+    ~TestMutex() { assert(!locked); }
+
+    void lock() { assert(!locked); locked = true; }
+    bool try_lock() { if (locked) return false; locked = true; return true; }
+    void unlock() { assert(locked); locked = false; }
+
+    TestMutex(TestMutex const&) = delete;
+    TestMutex& operator=(TestMutex const&) = delete;
+};
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+struct TestMutexThrows {
+    bool locked = false;
+    bool throws_on_lock = false;
+
+    TestMutexThrows() = default;
+    ~TestMutexThrows() { assert(!locked); }
+
+    void lock() {
+        assert(!locked);
+        if (throws_on_lock) {
+            throw 42;
+        }
+        locked = true;
+    }
+
+    bool try_lock() {
+        if (locked) return false;
+        lock();
+        return true;
+    }
+
+    void unlock() { assert(locked); locked = false; }
+
+    TestMutexThrows(TestMutexThrows const&) = delete;
+    TestMutexThrows& operator=(TestMutexThrows const&) = delete;
+};
+#endif // !defined(TEST_HAS_NO_EXCEPTIONS)
+
+int main(int, char**)
+{
+    {
+        using LG = std::scoped_lock<>;
+        LG lg;
+    }
+    {
+        using LG = std::scoped_lock<TestMutex>;
+        TestMutex m1;
+        {
+            LG lg(m1);
+            assert(m1.locked);
+        }
+        assert(!m1.locked);
+    }
+    {
+        using LG = std::scoped_lock<TestMutex, TestMutex>;
+        TestMutex m1, m2;
+        {
+            LG lg(m1, m2);
+            assert(m1.locked && m2.locked);
+        }
+        assert(!m1.locked && !m2.locked);
+    }
+    {
+        using LG = std::scoped_lock<TestMutex, TestMutex, TestMutex>;
+        TestMutex m1, m2, m3;
+        {
+            LG lg(m1, m2, m3);
+            assert(m1.locked && m2.locked && m3.locked);
+        }
+        assert(!m1.locked && !m2.locked && !m3.locked);
+    }
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    {
+        using MT = TestMutexThrows;
+        using LG = std::scoped_lock<MT>;
+        MT m1;
+        m1.throws_on_lock = true;
+        try {
+            LG lg(m1);
+            assert(false);
+        } catch (int) {}
+        assert(!m1.locked);
+    }
+    {
+        using MT = TestMutexThrows;
+        using LG = std::scoped_lock<MT, MT>;
+        MT m1, m2;
+        m1.throws_on_lock = true;
+        try {
+            LG lg(m1, m2);
+            assert(false);
+        } catch (int) {}
+        assert(!m1.locked && !m2.locked);
+    }
+    {
+        using MT = TestMutexThrows;
+        using LG = std::scoped_lock<MT, MT, MT>;
+        MT m1, m2, m3;
+        m2.throws_on_lock = true;
+        try {
+            LG lg(m1, m2, m3);
+            assert(false);
+        } catch (int) {}
+        assert(!m1.locked && !m2.locked && !m3.locked);
+    }
+#endif
+
+#if TEST_STD_VER >= 17
+    {
+    TestMutex m1, m2, m3;
+        {
+        std::scoped_lock sl{};
+        static_assert((std::is_same<decltype(sl), std::scoped_lock<>>::value), "" );
+        }
+        {
+        std::scoped_lock sl{m1};
+        static_assert((std::is_same<decltype(sl), std::scoped_lock<decltype(m1)>>::value), "" );
+        }
+        {
+        std::scoped_lock sl{m1, m2};
+        static_assert((std::is_same<decltype(sl), std::scoped_lock<decltype(m1), decltype(m2)>>::value), "" );
+        }
+        {
+        std::scoped_lock sl{m1, m2, m3};
+        static_assert((std::is_same<decltype(sl), std::scoped_lock<decltype(m1), decltype(m2), decltype(m3)>>::value), "" );
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/types.pass.cpp
new file mode 100644
index 0000000..7c93874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/types.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <mutex>
+
+// template <class... MutexTypes>
+// class scoped_lock
+// {
+// public:
+//     typedef Mutex mutex_type;  // Only if sizeof...(MutexTypes) == 1
+//     ...
+// };
+
+#include <mutex>
+#include <type_traits>
+#include "test_macros.h"
+
+struct NAT {};
+
+template <class LG>
+auto test_typedef(int) -> typename LG::mutex_type;
+
+template <class LG>
+auto test_typedef(...) -> NAT;
+
+template <class LG>
+constexpr bool has_mutex_type() {
+    return !std::is_same<decltype(test_typedef<LG>(0)), NAT>::value;
+}
+
+int main(int, char**)
+{
+    {
+        using T = std::scoped_lock<>;
+        static_assert(!has_mutex_type<T>(), "");
+    }
+    {
+        using M1 = std::mutex;
+        using T = std::scoped_lock<M1>;
+        static_assert(std::is_same<T::mutex_type, M1>::value, "");
+    }
+    {
+        using M1 = std::recursive_mutex;
+        using T = std::scoped_lock<M1>;
+        static_assert(std::is_same<T::mutex_type, M1>::value, "");
+    }
+    {
+        using M1 = std::mutex;
+        using M2 = std::recursive_mutex;
+        using T = std::scoped_lock<M1, M2>;
+        static_assert(!has_mutex_type<T>(), "");
+    }
+    {
+        using M1 = std::mutex;
+        using M2 = std::recursive_mutex;
+        using T = std::scoped_lock<M1, M1, M2>;
+        static_assert(!has_mutex_type<T>(), "");
+    }
+    {
+        using M1 = std::mutex;
+        using T = std::scoped_lock<M1, M1>;
+        static_assert(!has_mutex_type<T>(), "");
+    }
+    {
+        using M1 = std::recursive_mutex;
+        using T = std::scoped_lock<M1, M1, M1>;
+        static_assert(!has_mutex_type<T>(), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..3fa4373
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/implicit_ctad.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// shared_lock
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <shared_mutex>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::shared_mutex mutex;
+  {
+    std::shared_lock lock(mutex);
+    ASSERT_SAME_TYPE(decltype(lock), std::shared_lock<std::shared_mutex>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/copy_assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/copy_assign.compile.fail.cpp
new file mode 100644
index 0000000..9196682
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/copy_assign.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock& operator=(shared_lock const&) = delete;
+
+#include <shared_mutex>
+
+std::shared_timed_mutex m0;
+std::shared_timed_mutex m1;
+
+int main(int, char**)
+{
+    std::shared_lock<std::shared_timed_mutex> lk0(m0);
+    std::shared_lock<std::shared_timed_mutex> lk1(m1);
+    lk1 = lk0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/copy_ctor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/copy_ctor.compile.fail.cpp
new file mode 100644
index 0000000..5c13e08
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/copy_ctor.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock(shared_lock const&) = delete;
+
+#include <shared_mutex>
+
+std::shared_timed_mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<std::shared_timed_mutex> lk0(m);
+    std::shared_lock<std::shared_timed_mutex> lk = lk0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/default.pass.cpp
new file mode 100644
index 0000000..e901591
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/default.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock();
+
+#include <shared_mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::shared_lock<std::shared_timed_mutex> ul;
+    assert(!ul.owns_lock());
+    assert(ul.mutex() == nullptr);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..1db771d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_assign.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock& operator=(shared_lock&& u);
+
+#include <shared_mutex>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+
+int main(int, char**)
+{
+    {
+    typedef std::shared_timed_mutex M;
+    M m0;
+    M m1;
+    std::shared_lock<M> lk0(m0);
+    std::shared_lock<M> lk1(m1);
+    lk1 = std::move(lk0);
+    assert(lk1.mutex() == std::addressof(m0));
+    assert(lk1.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+    {
+    typedef nasty_mutex M;
+    M m0;
+    M m1;
+    std::shared_lock<M> lk0(m0);
+    std::shared_lock<M> lk1(m1);
+    lk1 = std::move(lk0);
+    assert(lk1.mutex() == std::addressof(m0));
+    assert(lk1.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_ctor.pass.cpp
new file mode 100644
index 0000000..9bbbb93
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_ctor.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock(shared_lock&& u);
+
+#include <shared_mutex>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::shared_timed_mutex M;
+    M m;
+    std::shared_lock<M> lk0(m);
+    std::shared_lock<M> lk = std::move(lk0);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+    {
+    typedef nasty_mutex M;
+    M m;
+    std::shared_lock<M> lk0(m);
+    std::shared_lock<M> lk = std::move(lk0);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
new file mode 100644
index 0000000..c5536d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+// ALLOW_RETRIES: 2
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// explicit shared_lock(mutex_type& m);
+
+// template<class _Mutex> shared_lock(shared_lock<_Mutex>)
+//     -> shared_lock<_Mutex>;  // C++17
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(50);
+#else
+ms Tolerance = ms(50 * 5);
+#endif
+
+std::shared_timed_mutex m;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    time_point t1;
+    {
+    std::shared_lock<std::shared_timed_mutex> ul(m);
+    t1 = Clock::now();
+    }
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+void g()
+{
+    time_point t0 = Clock::now();
+    time_point t1;
+    {
+    std::shared_lock<std::shared_timed_mutex> ul(m);
+    t1 = Clock::now();
+    }
+    ns d = t1 - t0;
+    assert(d < Tolerance);  // within tolerance
+}
+
+int main(int, char**)
+{
+    std::vector<std::thread> v;
+    {
+        m.lock();
+        for (int i = 0; i < 5; ++i)
+            v.push_back(support::make_test_thread(f));
+        std::this_thread::sleep_for(WaitTime);
+        m.unlock();
+        for (auto& t : v)
+            t.join();
+    }
+    {
+        m.lock_shared();
+        for (auto& t : v)
+            t = support::make_test_thread(g);
+        std::thread q = support::make_test_thread(f);
+        std::this_thread::sleep_for(WaitTime);
+        m.unlock_shared();
+        for (auto& t : v)
+            t.join();
+        q.join();
+    }
+
+#if TEST_STD_VER >= 17
+    std::shared_lock sl(m);
+    static_assert((std::is_same<decltype(sl), std::shared_lock<decltype(m)>>::value), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_adopt_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_adopt_lock.pass.cpp
new file mode 100644
index 0000000..da4db9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_adopt_lock.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock(mutex_type& m, adopt_lock_t);
+
+#include <shared_mutex>
+#include <cassert>
+#include <mutex>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::shared_timed_mutex M;
+    M m;
+    m.lock();
+    std::unique_lock<M> lk(m, std::adopt_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    }
+    {
+    typedef nasty_mutex M;
+    M m;
+    m.lock();
+    std::unique_lock<M> lk(m, std::adopt_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_defer_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_defer_lock.pass.cpp
new file mode 100644
index 0000000..5c698e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_defer_lock.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock(mutex_type& m, defer_lock_t);
+
+#include <shared_mutex>
+#include <cassert>
+#include <mutex>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::shared_timed_mutex M;
+    M m;
+    std::unique_lock<M> lk(m, std::defer_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == false);
+    }
+    {
+    typedef nasty_mutex M;
+    M m;
+    std::unique_lock<M> lk(m, std::defer_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_duration.pass.cpp
new file mode 100644
index 0000000..4c4f04a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_duration.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class timed_mutex;
+
+// template <class Rep, class Period>
+//   shared_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_time);
+
+#include <thread>
+
+#include <atomic>
+#include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms LongTime = ms(5000);
+ms ShortTime = ms(50);
+
+static const unsigned Threads = 5;
+
+std::atomic<unsigned> CountDown(Threads);
+
+void f1()
+{
+  // Preemptive scheduling means that one cannot make assumptions about when
+  // code executes and therefore we cannot assume anthing about when the mutex
+  // starts waiting relative to code in the main thread. We can however prove
+  // that a timeout occured and that implies that this code is waiting.
+  // See f2() below.
+  //
+  // Nevertheless, we should at least try to ensure that the mutex waits and
+  // therefore we use an atomic variable to signal to the main thread that this
+  // code is just a few instructions away from waiting.
+  --CountDown;
+  std::shared_lock<std::shared_timed_mutex> lk(m, LongTime);
+  assert(lk.owns_lock() == true);
+}
+
+void f2()
+{
+  time_point t0 = Clock::now();
+  std::shared_lock<std::shared_timed_mutex> lk(m, ShortTime);
+  time_point t1 = Clock::now();
+  assert(lk.owns_lock() == false);
+  assert(t1 - t0 >= ShortTime);
+}
+
+int main(int, char**)
+{
+  {
+    m.lock();
+    std::vector<std::thread> v;
+    for (unsigned i = 0; i < Threads; ++i)
+      v.push_back(support::make_test_thread(f1));
+    while (CountDown > 0)
+      std::this_thread::yield();
+    // Give one more chance for threads to block and wait for the mutex.
+    std::this_thread::yield();
+    std::this_thread::sleep_for(ShortTime);
+    m.unlock();
+    for (auto& t : v)
+      t.join();
+  }
+  {
+    m.lock();
+    std::vector<std::thread> v;
+    for (unsigned i = 0; i < Threads; ++i)
+      v.push_back(support::make_test_thread(f2));
+    for (auto& t : v)
+      t.join();
+    m.unlock();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_time_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_time_point.pass.cpp
new file mode 100644
index 0000000..7ab3c2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_time_point.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// template <class Clock, class Duration>
+//   shared_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <thread>
+
+#include <atomic>
+#include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms LongTime = ms(5000);
+ms ShortTime = ms(50);
+
+static constexpr unsigned Threads = 5;
+
+std::atomic<unsigned> CountDown(Threads);
+
+void f1()
+{
+  --CountDown;
+  time_point t0 = Clock::now();
+  std::shared_lock<std::shared_timed_mutex> lk(m, t0 + LongTime);
+  time_point t1 = Clock::now();
+  assert(lk.owns_lock() == true);
+  assert(t1 - t0 <= LongTime);
+}
+
+void f2()
+{
+  time_point t0 = Clock::now();
+  std::shared_lock<std::shared_timed_mutex> lk(m, t0 + ShortTime);
+  time_point t1 = Clock::now();
+  assert(lk.owns_lock() == false);
+  assert(t1 - t0 >= ShortTime);
+}
+
+int main(int, char**)
+{
+  {
+    m.lock();
+    std::vector<std::thread> v;
+    for (unsigned i = 0; i < Threads; ++i)
+      v.push_back(support::make_test_thread(f1));
+    while (CountDown > 0)
+      std::this_thread::yield();
+    std::this_thread::sleep_for(ShortTime);
+    m.unlock();
+    for (auto& t : v)
+      t.join();
+  }
+  {
+    m.lock();
+    std::vector<std::thread> v;
+    for (unsigned i = 0; i < Threads; ++i)
+      v.push_back(support::make_test_thread(f2));
+    for (auto& t : v)
+      t.join();
+    m.unlock();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_try_to_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_try_to_lock.pass.cpp
new file mode 100644
index 0000000..fde0ed6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_try_to_lock.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+// ALLOW_RETRIES: 2
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// shared_lock(mutex_type& m, try_to_lock_t);
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(200);
+#else
+ms Tolerance = ms(200 * 5);
+#endif
+
+void f()
+{
+    time_point t0 = Clock::now();
+    {
+        std::shared_lock<std::shared_timed_mutex> lk(m, std::try_to_lock);
+        assert(lk.owns_lock() == false);
+    }
+    {
+        std::shared_lock<std::shared_timed_mutex> lk(m, std::try_to_lock);
+        assert(lk.owns_lock() == false);
+    }
+    {
+        std::shared_lock<std::shared_timed_mutex> lk(m, std::try_to_lock);
+        assert(lk.owns_lock() == false);
+    }
+    while (true)
+    {
+        std::shared_lock<std::shared_timed_mutex> lk(m, std::try_to_lock);
+        if (lk.owns_lock())
+            break;
+        std::this_thread::yield();
+    }
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < Tolerance);  // within tolerance
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < 5; ++i)
+        v.push_back(support::make_test_thread(f));
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    for (auto& t : v)
+        t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
new file mode 100644
index 0000000..1bc131a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/lock.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+// ALLOW_RETRIES: 2
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// void lock();
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(25);
+#else
+ms Tolerance = ms(25 * 5);
+#endif
+
+
+void f()
+{
+    std::shared_lock<std::shared_timed_mutex> lk(m, std::defer_lock);
+    time_point t0 = Clock::now();
+    lk.lock();
+    time_point t1 = Clock::now();
+    assert(lk.owns_lock() == true);
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < 5; ++i)
+        v.push_back(support::make_test_thread(f));
+    std::this_thread::sleep_for(WaitTime);
+    m.unlock();
+    for (auto& t : v)
+        t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
new file mode 100644
index 0000000..ae387cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+//
+// ALLOW_RETRIES: 2
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// bool try_lock();
+
+#include <shared_mutex>
+#include <cassert>
+#include <mutex>
+
+#include "test_macros.h"
+
+bool try_lock_called = false;
+
+struct mutex
+{
+    bool try_lock_shared()
+    {
+        try_lock_called = !try_lock_called;
+        return try_lock_called;
+    }
+    void unlock_shared() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<mutex> lk(m, std::defer_lock);
+    assert(lk.try_lock() == true);
+    assert(try_lock_called == true);
+    assert(lk.owns_lock() == true);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    assert(lk.try_lock() == false);
+    assert(try_lock_called == false);
+    assert(lk.owns_lock() == false);
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
new file mode 100644
index 0000000..7f8189c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_for.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// template <class Rep, class Period>
+//   bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <shared_mutex>
+#include <cassert>
+#include <chrono>
+#include <mutex>
+
+#include "test_macros.h"
+
+bool try_lock_for_called = false;
+
+typedef std::chrono::milliseconds ms;
+
+struct mutex
+{
+    template <class Rep, class Period>
+        bool try_lock_shared_for(const std::chrono::duration<Rep, Period>& rel_time)
+    {
+        assert(rel_time == ms(5));
+        try_lock_for_called = !try_lock_for_called;
+        return try_lock_for_called;
+    }
+    void unlock_shared() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<mutex> lk(m, std::defer_lock);
+    assert(lk.try_lock_for(ms(5)) == true);
+    assert(try_lock_for_called == true);
+    assert(lk.owns_lock() == true);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_for(ms(5));
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    assert(lk.try_lock_for(ms(5)) == false);
+    assert(try_lock_for_called == false);
+    assert(lk.owns_lock() == false);
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_for(ms(5));
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
new file mode 100644
index 0000000..fb4afdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/try_lock_until.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// template <class Clock, class Duration>
+//   bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <shared_mutex>
+#include <cassert>
+#include <chrono>
+#include <mutex>
+
+#include "test_macros.h"
+
+bool try_lock_until_called = false;
+
+struct mutex
+{
+    template <class Clock, class Duration>
+        bool try_lock_shared_until(const std::chrono::time_point<Clock, Duration>& abs_time)
+    {
+        typedef std::chrono::milliseconds ms;
+        assert(Clock::now() - abs_time < ms(5));
+        try_lock_until_called = !try_lock_until_called;
+        return try_lock_until_called;
+    }
+    void unlock_shared() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    typedef std::chrono::steady_clock Clock;
+    std::shared_lock<mutex> lk(m, std::defer_lock);
+    assert(lk.try_lock_until(Clock::now()) == true);
+    assert(try_lock_until_called == true);
+    assert(lk.owns_lock() == true);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_until(Clock::now());
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    assert(lk.try_lock_until(Clock::now()) == false);
+    assert(try_lock_until_called == false);
+    assert(lk.owns_lock() == false);
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_until(Clock::now());
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
new file mode 100644
index 0000000..210824e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.locking/unlock.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// void unlock();
+
+#include <shared_mutex>
+#include <cassert>
+#include <system_error>
+
+#include "test_macros.h"
+
+bool unlock_called = false;
+
+struct mutex
+{
+    void lock_shared() {}
+    void unlock_shared() {unlock_called = true;}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<mutex> lk(m);
+    lk.unlock();
+    assert(unlock_called == true);
+    assert(lk.owns_lock() == false);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.unlock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.unlock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
new file mode 100644
index 0000000..aeca202
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/member_swap.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// void swap(shared_lock& u) noexcept;
+
+#include <shared_mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct mutex
+{
+    void lock_shared() {}
+    void unlock_shared() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<mutex> lk1(m);
+    std::shared_lock<mutex> lk2;
+    lk1.swap(lk2);
+    assert(lk1.mutex() == nullptr);
+    assert(lk1.owns_lock() == false);
+    assert(lk2.mutex() == &m);
+    assert(lk2.owns_lock() == true);
+    static_assert(noexcept(lk1.swap(lk2)), "member swap must be noexcept");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..25e5cf6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/nonmember_swap.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// template <class Mutex>
+//   void swap(shared_lock<Mutex>& x, shared_lock<Mutex>& y) noexcept;
+
+#include <shared_mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct mutex
+{
+    void lock_shared() {}
+    void unlock_shared() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<mutex> lk1(m);
+    std::shared_lock<mutex> lk2;
+    swap(lk1, lk2);
+    assert(lk1.mutex() == nullptr);
+    assert(lk1.owns_lock() == false);
+    assert(lk2.mutex() == &m);
+    assert(lk2.owns_lock() == true);
+    static_assert(noexcept(swap(lk1, lk2)), "non-member swap must be noexcept");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
new file mode 100644
index 0000000..9dfdd0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.mod/release.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// mutex_type* release() noexcept;
+
+#include <shared_mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct mutex
+{
+    static int lock_count;
+    static int unlock_count;
+    void lock_shared() {++lock_count;}
+    void unlock_shared() {++unlock_count;}
+};
+
+int mutex::lock_count = 0;
+int mutex::unlock_count = 0;
+
+mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<mutex> lk(m);
+    assert(lk.mutex() == &m);
+    assert(lk.owns_lock() == true);
+    assert(mutex::lock_count == 1);
+    assert(mutex::unlock_count == 0);
+    assert(lk.release() == &m);
+    assert(lk.mutex() == nullptr);
+    assert(lk.owns_lock() == false);
+    assert(mutex::lock_count == 1);
+    assert(mutex::unlock_count == 0);
+    static_assert(noexcept(lk.release()), "release must be noexcept");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/mutex.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/mutex.pass.cpp
new file mode 100644
index 0000000..216a6a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/mutex.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// mutex_type *mutex() const noexcept;
+
+#include <shared_mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<std::shared_timed_mutex> lk0;
+    assert(lk0.mutex() == nullptr);
+    std::shared_lock<std::shared_timed_mutex> lk1(m);
+    assert(lk1.mutex() == &m);
+    lk1.unlock();
+    assert(lk1.mutex() == &m);
+    static_assert(noexcept(lk0.mutex()), "mutex() must be noexcept");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
new file mode 100644
index 0000000..1186671
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/op_bool.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// explicit operator bool() const noexcept;
+
+#include <shared_mutex>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct M {
+    void lock_shared() {}
+    void unlock_shared() {}
+};
+
+int main(int, char**)
+{
+    static_assert(std::is_constructible<bool, std::shared_lock<M>>::value, "");
+    static_assert(!std::is_convertible<std::shared_lock<M>, bool>::value, "");
+
+    M m;
+    std::shared_lock<M> lk0;
+    assert(static_cast<bool>(lk0) == false);
+    std::shared_lock<M> lk1(m);
+    assert(static_cast<bool>(lk1) == true);
+    lk1.unlock();
+    assert(static_cast<bool>(lk1) == false);
+    ASSERT_NOEXCEPT(static_cast<bool>(lk0));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/owns_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/owns_lock.pass.cpp
new file mode 100644
index 0000000..abe9198
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.obs/owns_lock.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// dylib support for shared_mutex was added in macosx10.12
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// template <class Mutex> class shared_lock;
+
+// bool owns_lock() const noexcept;
+
+#include <shared_mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+int main(int, char**)
+{
+    std::shared_lock<std::shared_timed_mutex> lk0;
+    assert(lk0.owns_lock() == false);
+    std::shared_lock<std::shared_timed_mutex> lk1(m);
+    assert(lk1.owns_lock() == true);
+    lk1.unlock();
+    assert(lk1.owns_lock() == false);
+    static_assert(noexcept(lk0.owns_lock()), "owns_lock must be noexcept");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/types.pass.cpp
new file mode 100644
index 0000000..7c1f5f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/types.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+
+// <shared_mutex>
+
+// template <class Mutex>
+// class shared_lock
+// {
+// public:
+//     typedef Mutex mutex_type;
+//     ...
+// };
+
+#include <shared_mutex>
+#include <mutex>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::shared_lock<std::mutex>::mutex_type,
+                   std::mutex>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..ffe651c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/implicit_ctad.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <mutex>
+
+// unique_lock
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  std::mutex mutex;
+  {
+    std::unique_lock lock(mutex);
+    ASSERT_SAME_TYPE(decltype(lock), std::unique_lock<std::mutex>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/copy_assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/copy_assign.compile.fail.cpp
new file mode 100644
index 0000000..799cb61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/copy_assign.compile.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock& operator=(unique_lock const&) = delete;
+
+#include <mutex>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+    typedef std::mutex M;
+    M m0;
+    M m1;
+    std::unique_lock<M> lk0(m0);
+    std::unique_lock<M> lk1(m1);
+    lk1 = lk0;
+    assert(lk1.mutex() == &m0);
+    assert(lk1.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/copy_ctor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/copy_ctor.compile.fail.cpp
new file mode 100644
index 0000000..e258198
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/copy_ctor.compile.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock(unique_lock const&) = delete;
+
+#include <mutex>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+    typedef std::mutex M;
+    M m;
+    std::unique_lock<M> lk0(m);
+    std::unique_lock<M> lk = lk0;
+    assert(lk.mutex() == &m);
+    assert(lk.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/default.pass.cpp
new file mode 100644
index 0000000..2034a26
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/default.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock();
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::unique_lock<std::mutex> ul;
+    assert(!ul.owns_lock());
+    assert(ul.mutex() == nullptr);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/move_assign.pass.cpp
new file mode 100644
index 0000000..0af918c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/move_assign.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, c++03
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock& operator=(unique_lock&& u);
+
+#include <mutex>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::mutex M;
+    M m0;
+    M m1;
+    std::unique_lock<M> lk0(m0);
+    std::unique_lock<M> lk1(m1);
+    lk1 = std::move(lk0);
+    assert(lk1.mutex() == std::addressof(m0));
+    assert(lk1.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+    {
+    typedef nasty_mutex M;
+    M m0;
+    M m1;
+    std::unique_lock<M> lk0(m0);
+    std::unique_lock<M> lk1(m1);
+    lk1 = std::move(lk0);
+    assert(lk1.mutex() == std::addressof(m0));
+    assert(lk1.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/move_ctor.pass.cpp
new file mode 100644
index 0000000..cce0eb5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/move_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads, c++03
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock(unique_lock&& u);
+
+#include <mutex>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::mutex M;
+    M m;
+    std::unique_lock<M> lk0(m);
+    std::unique_lock<M> lk = std::move(lk0);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+    {
+    typedef nasty_mutex M;
+    M m;
+    std::unique_lock<M> lk0(m);
+    std::unique_lock<M> lk = std::move(lk0);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    assert(lk0.mutex() == nullptr);
+    assert(lk0.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex.pass.cpp
new file mode 100644
index 0000000..bba78cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// explicit unique_lock(mutex_type& m);
+
+// template<class _Mutex> unique_lock(unique_lock<_Mutex>)
+//     -> unique_lock<_Mutex>;  // C++17
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    time_point t1;
+    {
+    std::unique_lock<std::mutex> ul(m);
+    t1 = Clock::now();
+    }
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+#if TEST_STD_VER >= 17
+    std::unique_lock ul(m);
+    static_assert((std::is_same<decltype(ul), std::unique_lock<decltype(m)>>::value), "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_adopt_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_adopt_lock.pass.cpp
new file mode 100644
index 0000000..b2e8065
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_adopt_lock.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock(mutex_type& m, adopt_lock_t);
+
+#include <mutex>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::mutex M;
+    M m;
+    m.lock();
+    std::unique_lock<M> lk(m, std::adopt_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    }
+    {
+    typedef nasty_mutex M;
+    M m;
+    m.lock();
+    std::unique_lock<M> lk(m, std::adopt_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_defer_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_defer_lock.pass.cpp
new file mode 100644
index 0000000..fa00da6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_defer_lock.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock(mutex_type& m, defer_lock_t);
+
+#include <mutex>
+#include <cassert>
+#include "nasty_containers.h"
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::mutex M;
+    M m;
+    std::unique_lock<M> lk(m, std::defer_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == false);
+    }
+    {
+    typedef nasty_mutex M;
+    M m;
+    std::unique_lock<M> lk(m, std::defer_lock);
+    assert(lk.mutex() == std::addressof(m));
+    assert(lk.owns_lock() == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_duration.pass.cpp
new file mode 100644
index 0000000..4bfabab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_duration.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class timed_mutex;
+
+// template <class Rep, class Period>
+//   unique_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_time);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    std::unique_lock<std::timed_mutex> lk(m, ms(300));
+    assert(lk.owns_lock() == true);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    std::unique_lock<std::timed_mutex> lk(m, ms(250));
+    assert(lk.owns_lock() == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(ms(250));
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(ms(300));
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_time_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_time_point.pass.cpp
new file mode 100644
index 0000000..b85bbac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_time_point.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class timed_mutex;
+
+// template <class Clock, class Duration>
+//   unique_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    std::unique_lock<std::timed_mutex> lk(m, Clock::now() + ms(300));
+    assert(lk.owns_lock() == true);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ns(50000000));  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    std::unique_lock<std::timed_mutex> lk(m, Clock::now() + ms(250));
+    assert(lk.owns_lock() == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(ms(250));
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(ms(300));
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_try_to_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_try_to_lock.pass.cpp
new file mode 100644
index 0000000..39d3bde
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.cons/mutex_try_to_lock.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// unique_lock(mutex_type& m, try_to_lock_t);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    {
+        std::unique_lock<std::mutex> lk(m, std::try_to_lock);
+        assert(lk.owns_lock() == false);
+    }
+    {
+        std::unique_lock<std::mutex> lk(m, std::try_to_lock);
+        assert(lk.owns_lock() == false);
+    }
+    {
+        std::unique_lock<std::mutex> lk(m, std::try_to_lock);
+        assert(lk.owns_lock() == false);
+    }
+    while (true)
+    {
+        std::unique_lock<std::mutex> lk(m, std::try_to_lock);
+        if (lk.owns_lock())
+            break;
+    }
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/lock.pass.cpp
new file mode 100644
index 0000000..b1b5af0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/lock.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// void lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    std::unique_lock<std::mutex> lk(m, std::defer_lock);
+    time_point t0 = Clock::now();
+    lk.lock();
+    time_point t1 = Clock::now();
+    assert(lk.owns_lock() == true);
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(25));  // within 25ms
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
new file mode 100644
index 0000000..83e1d7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+//
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// bool try_lock();
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool try_lock_called = false;
+
+struct mutex
+{
+    bool try_lock()
+    {
+        try_lock_called = !try_lock_called;
+        return try_lock_called;
+    }
+    void unlock() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<mutex> lk(m, std::defer_lock);
+    assert(lk.try_lock() == true);
+    assert(try_lock_called == true);
+    assert(lk.owns_lock() == true);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    assert(lk.try_lock() == false);
+    assert(try_lock_called == false);
+    assert(lk.owns_lock() == false);
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
new file mode 100644
index 0000000..1a0fba6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_for.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// template <class Rep, class Period>
+//   bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool try_lock_for_called = false;
+
+typedef std::chrono::milliseconds ms;
+
+struct mutex
+{
+    template <class Rep, class Period>
+        bool try_lock_for(const std::chrono::duration<Rep, Period>& rel_time)
+    {
+        assert(rel_time == ms(5));
+        try_lock_for_called = !try_lock_for_called;
+        return try_lock_for_called;
+    }
+    void unlock() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<mutex> lk(m, std::defer_lock);
+    assert(lk.try_lock_for(ms(5)) == true);
+    assert(try_lock_for_called == true);
+    assert(lk.owns_lock() == true);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_for(ms(5));
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    assert(lk.try_lock_for(ms(5)) == false);
+    assert(try_lock_for_called == false);
+    assert(lk.owns_lock() == false);
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_for(ms(5));
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
new file mode 100644
index 0000000..3f6f213
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/try_lock_until.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// template <class Clock, class Duration>
+//   bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool try_lock_until_called = false;
+
+struct mutex
+{
+    template <class Clock, class Duration>
+        bool try_lock_until(const std::chrono::time_point<Clock, Duration>& abs_time)
+    {
+        typedef std::chrono::milliseconds ms;
+        assert(Clock::now() - abs_time < ms(5));
+        try_lock_until_called = !try_lock_until_called;
+        return try_lock_until_called;
+    }
+    void unlock() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    typedef std::chrono::steady_clock Clock;
+    std::unique_lock<mutex> lk(m, std::defer_lock);
+    assert(lk.try_lock_until(Clock::now()) == true);
+    assert(try_lock_until_called == true);
+    assert(lk.owns_lock() == true);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_until(Clock::now());
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EDEADLK);
+    }
+#endif
+    lk.unlock();
+    assert(lk.try_lock_until(Clock::now()) == false);
+    assert(try_lock_until_called == false);
+    assert(lk.owns_lock() == false);
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        TEST_IGNORE_NODISCARD lk.try_lock_until(Clock::now());
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/unlock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/unlock.pass.cpp
new file mode 100644
index 0000000..4cd72b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.locking/unlock.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// void unlock();
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+bool unlock_called = false;
+
+struct mutex
+{
+    void lock() {}
+    void unlock() {unlock_called = true;}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<mutex> lk(m);
+    lk.unlock();
+    assert(unlock_called == true);
+    assert(lk.owns_lock() == false);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.unlock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+    lk.release();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        lk.unlock();
+        assert(false);
+    }
+    catch (std::system_error& e)
+    {
+        assert(e.code().value() == EPERM);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
new file mode 100644
index 0000000..fc12d3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/member_swap.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// void swap(unique_lock& u);
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct mutex
+{
+    void lock() {}
+    void unlock() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<mutex> lk1(m);
+    std::unique_lock<mutex> lk2;
+    lk1.swap(lk2);
+    assert(lk1.mutex() == nullptr);
+    assert(lk1.owns_lock() == false);
+    assert(lk2.mutex() == &m);
+    assert(lk2.owns_lock() == true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
new file mode 100644
index 0000000..03d268c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/nonmember_swap.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// template <class Mutex>
+//   void swap(unique_lock<Mutex>& x, unique_lock<Mutex>& y);
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct mutex
+{
+    void lock() {}
+    void unlock() {}
+};
+
+mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<mutex> lk1(m);
+    std::unique_lock<mutex> lk2;
+    swap(lk1, lk2);
+    assert(lk1.mutex() == nullptr);
+    assert(lk1.owns_lock() == false);
+    assert(lk2.mutex() == &m);
+    assert(lk2.owns_lock() == true);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
new file mode 100644
index 0000000..4f2d59c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.mod/release.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// mutex_type* release() noexcept;
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct mutex
+{
+    static int lock_count;
+    static int unlock_count;
+    void lock() {++lock_count;}
+    void unlock() {++unlock_count;}
+};
+
+int mutex::lock_count = 0;
+int mutex::unlock_count = 0;
+
+mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<mutex> lk(m);
+    assert(lk.mutex() == &m);
+    assert(lk.owns_lock() == true);
+    assert(mutex::lock_count == 1);
+    assert(mutex::unlock_count == 0);
+    assert(lk.release() == &m);
+    assert(lk.mutex() == nullptr);
+    assert(lk.owns_lock() == false);
+    assert(mutex::lock_count == 1);
+    assert(mutex::unlock_count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/mutex.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/mutex.pass.cpp
new file mode 100644
index 0000000..dd2f523
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/mutex.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// mutex_type *mutex() const;
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+std::mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<std::mutex> lk0;
+    assert(lk0.mutex() == nullptr);
+    std::unique_lock<std::mutex> lk1(m);
+    assert(lk1.mutex() == &m);
+    lk1.unlock();
+    assert(lk1.mutex() == &m);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp
new file mode 100644
index 0000000..ea05eb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// explicit operator bool() const noexcept;
+
+#include <mutex>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+std::mutex m;
+
+int main(int, char**)
+{
+    static_assert(std::is_constructible<bool, std::unique_lock<std::mutex> >::value, "");
+    static_assert(!std::is_convertible<std::unique_lock<std::mutex>, bool>::value, "");
+
+    std::unique_lock<std::mutex> lk0;
+    assert(static_cast<bool>(lk0) == false);
+    std::unique_lock<std::mutex> lk1(m);
+    assert(static_cast<bool>(lk1) == true);
+    lk1.unlock();
+    assert(static_cast<bool>(lk1) == false);
+    ASSERT_NOEXCEPT(static_cast<bool>(lk0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/owns_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/owns_lock.pass.cpp
new file mode 100644
index 0000000..9b192fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/owns_lock.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex> class unique_lock;
+
+// bool owns_lock() const;
+
+#include <mutex>
+#include <cassert>
+
+#include "test_macros.h"
+
+std::mutex m;
+
+int main(int, char**)
+{
+    std::unique_lock<std::mutex> lk0;
+    assert(lk0.owns_lock() == false);
+    std::unique_lock<std::mutex> lk1(m);
+    assert(lk1.owns_lock() == true);
+    lk1.unlock();
+    assert(lk1.owns_lock() == false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/types.pass.cpp
new file mode 100644
index 0000000..d849788
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.unique/types.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// template <class Mutex>
+// class unique_lock
+// {
+// public:
+//     typedef Mutex mutex_type;
+//     ...
+// };
+
+#include <mutex>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::unique_lock<std::mutex>::mutex_type,
+                   std::mutex>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/types.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/types.fail.cpp
new file mode 100644
index 0000000..b4acac8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/types.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct defer_lock_t { explicit defer_lock_t() = default; };
+// struct try_to_lock_t { explicit try_to_lock_t() = default; };
+// struct adopt_lock_t { explicit adopt_lock_t() = default; };
+
+// This test checks for LWG 2510.
+
+#include <mutex>
+
+
+std::defer_lock_t f1() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::try_to_lock_t f2() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::adopt_lock_t f3() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/types.pass.cpp
new file mode 100644
index 0000000..2776e00
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.lock/types.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct defer_lock_t { explicit defer_lock_t() = default; };
+// struct try_to_lock_t { explicit try_to_lock_t() = default; };
+// struct adopt_lock_t { explicit adopt_lock_t() = default; };
+//
+// constexpr defer_lock_t  defer_lock{};
+// constexpr try_to_lock_t try_to_lock{};
+// constexpr adopt_lock_t  adopt_lock{};
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::defer_lock_t T1;
+    typedef std::try_to_lock_t T2;
+    typedef std::adopt_lock_t T3;
+
+    T1 t1 = std::defer_lock; ((void)t1);
+    T2 t2 = std::try_to_lock; ((void)t2);
+    T3 t3 = std::adopt_lock; ((void)t3);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/assign.compile.fail.cpp
new file mode 100644
index 0000000..ba09ed1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/assign.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class mutex;
+
+// mutex& operator=(const mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::mutex m0;
+    std::mutex m1;
+    m1 = m0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/copy.compile.fail.cpp
new file mode 100644
index 0000000..9edfb72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/copy.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class mutex;
+
+// mutex(const mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::mutex m0;
+    std::mutex m1(m0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/default.pass.cpp
new file mode 100644
index 0000000..d8115cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// class mutex;
+
+// mutex();
+
+#include <mutex>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  static_assert(std::is_nothrow_default_constructible<std::mutex>::value, "");
+  std::mutex m;
+  ((void)m);
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/lock.pass.cpp
new file mode 100644
index 0000000..6f91cc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/lock.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class mutex;
+
+// void lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    m.lock();
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/try_lock.pass.cpp
new file mode 100644
index 0000000..645b74b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.class/try_lock.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class mutex;
+
+// bool try_lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    while(!m.try_lock())
+        ;
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/assign.compile.fail.cpp
new file mode 100644
index 0000000..0cf3c5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/assign.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class recursive_mutex;
+
+// recursive_mutex& operator=(const recursive_mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::recursive_mutex m0;
+    std::recursive_mutex m1;
+    m1 = m0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/copy.compile.fail.cpp
new file mode 100644
index 0000000..454d779
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/copy.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class recursive_mutex;
+
+// recursive_mutex(const recursive_mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::recursive_mutex m0;
+    std::recursive_mutex m1(m0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/default.pass.cpp
new file mode 100644
index 0000000..43dc38d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/default.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// class recursive_mutex;
+
+// recursive_mutex();
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::recursive_mutex m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp
new file mode 100644
index 0000000..51b64b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class recursive_mutex;
+
+// void lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::recursive_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    m.lock();
+    time_point t1 = Clock::now();
+    m.lock();
+    m.unlock();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/try_lock.pass.cpp
new file mode 100644
index 0000000..801e2e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/try_lock.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class recursive_mutex;
+
+// bool try_lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::recursive_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    while(!m.try_lock())
+        ;
+    time_point t1 = Clock::now();
+    assert(m.try_lock());
+    m.unlock();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/assign.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/assign.fail.cpp
new file mode 100644
index 0000000..4f95c5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/assign.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// shared_mutex& operator=(const shared_mutex&) = delete;
+
+#include <shared_mutex>
+
+int main(int, char**)
+{
+    std::shared_mutex m0;
+    std::shared_mutex m1;
+    m1 = m0; // expected-error {{overload resolution selected deleted operator '='}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/copy.fail.cpp
new file mode 100644
index 0000000..182ba37
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/copy.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// shared_mutex(const shared_mutex&) = delete;
+
+#include <shared_mutex>
+
+int main(int, char**)
+{
+    std::shared_mutex m0;
+    std::shared_mutex m1(m0); // expected-error {{call to deleted constructor of 'std::shared_mutex'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/default.pass.cpp
new file mode 100644
index 0000000..0402a89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/default.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// shared_mutex();
+
+#include <shared_mutex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::shared_mutex m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp
new file mode 100644
index 0000000..24a52ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ALLOW_RETRIES: 2
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// void lock();
+
+#include <shared_mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(50);
+#else
+ms Tolerance = ms(50 * 5);
+#endif
+
+void f()
+{
+    time_point t0 = Clock::now();
+    m.lock();
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(WaitTime);
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock_shared.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock_shared.pass.cpp
new file mode 100644
index 0000000..3f5a064
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/lock_shared.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ALLOW_RETRIES: 2
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// void lock_shared();
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(50);
+#else
+ms Tolerance = ms(50 * 5);
+#endif
+
+void f()
+{
+    time_point t0 = Clock::now();
+    m.lock_shared();
+    time_point t1 = Clock::now();
+    m.unlock_shared();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+void g()
+{
+    time_point t0 = Clock::now();
+    m.lock_shared();
+    time_point t1 = Clock::now();
+    m.unlock_shared();
+    ns d = t1 - t0;
+    assert(d < Tolerance);  // within tolerance
+}
+
+
+int main(int, char**)
+{
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < 5; ++i)
+        v.push_back(support::make_test_thread(f));
+    std::this_thread::sleep_for(WaitTime);
+    m.unlock();
+    for (auto& t : v)
+        t.join();
+    m.lock_shared();
+    for (auto& t : v)
+        t = support::make_test_thread(g);
+    std::thread q = support::make_test_thread(f);
+    std::this_thread::sleep_for(WaitTime);
+    m.unlock_shared();
+    for (auto& t : v)
+        t.join();
+    q.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock.pass.cpp
new file mode 100644
index 0000000..92727ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ALLOW_RETRIES: 2
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// bool try_lock();
+
+#include <shared_mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    while(!m.try_lock())
+        ;
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock_shared.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock_shared.pass.cpp
new file mode 100644
index 0000000..ac6a95b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.shared_mutex.requirements/thread.shared_mutex.class/try_lock_shared.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ALLOW_RETRIES: 2
+
+// shared_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_mutex;
+
+// bool try_lock_shared();
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(200);
+#else
+ms Tolerance = ms(200 * 5);
+#endif
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock_shared());
+    assert(!m.try_lock_shared());
+    assert(!m.try_lock_shared());
+    while(!m.try_lock_shared())
+        std::this_thread::yield();
+    time_point t1 = Clock::now();
+    m.unlock_shared();
+    ns d = t1 - t0 - ms(250);
+    assert(d < Tolerance);  // within tolerance
+}
+
+
+int main(int, char**)
+{
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < 5; ++i)
+        v.push_back(support::make_test_thread(f));
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    for (auto& t : v)
+        t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/assign.compile.fail.cpp
new file mode 100644
index 0000000..9af5a4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/assign.compile.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// shared_timed_mutex& operator=(const shared_timed_mutex&) = delete;
+
+#include <shared_mutex>
+
+int main(int, char**)
+{
+    std::shared_timed_mutex m0;
+    std::shared_timed_mutex m1;
+    m1 = m0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/copy.compile.fail.cpp
new file mode 100644
index 0000000..c9ec248
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/copy.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// shared_timed_mutex(const shared_timed_mutex&) = delete;
+
+#include <shared_mutex>
+
+int main(int, char**)
+{
+    std::shared_timed_mutex m0;
+    std::shared_timed_mutex m1(m0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/default.pass.cpp
new file mode 100644
index 0000000..1456606
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/default.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// shared_timed_mutex();
+
+#include <shared_mutex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::shared_timed_mutex m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock.pass.cpp
new file mode 100644
index 0000000..c4836a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// ALLOW_RETRIES: 3
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// void lock();
+
+#include <thread>
+
+#include <atomic>
+#include <cstdlib>
+#include <cassert>
+#include <shared_mutex>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+std::atomic<bool> ready(false);
+time_point start;
+
+ms WaitTime = ms(250);
+
+void f()
+{
+  ready.store(true);
+  m.lock();
+  time_point t0 = start;
+  time_point t1 = Clock::now();
+  m.unlock();
+  assert(t0.time_since_epoch() > ms(0));
+  assert(t1 - t0 >= WaitTime);
+}
+
+int main(int, char**)
+{
+  m.lock();
+  std::thread t = support::make_test_thread(f);
+  while (!ready)
+    std::this_thread::yield();
+  start = Clock::now();
+  std::this_thread::sleep_for(WaitTime);
+  m.unlock();
+  t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock_shared.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock_shared.pass.cpp
new file mode 100644
index 0000000..1ec0814
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/lock_shared.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// ALLOW_RETRIES: 3
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// void lock_shared();
+
+#include <thread>
+
+#include <atomic>
+#include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+std::atomic<unsigned> countDown;
+time_point readerStart; // Protected by the above mutex 'm'
+time_point writerStart; // Protected by the above mutex 'm'
+
+ms WaitTime = ms(250);
+
+void readerMustWait() {
+  --countDown;
+  m.lock_shared();
+  time_point t1 = Clock::now();
+  time_point t0 = readerStart;
+  m.unlock_shared();
+  assert(t0.time_since_epoch() > ms(0));
+  assert(t1 - t0 >= WaitTime);
+}
+
+void reader() {
+  --countDown;
+  m.lock_shared();
+  m.unlock_shared();
+}
+
+void writerMustWait() {
+  --countDown;
+  m.lock();
+  time_point t1 = Clock::now();
+  time_point t0 = writerStart;
+  m.unlock();
+  assert(t0.time_since_epoch() > ms(0));
+  assert(t1 - t0 >= WaitTime);
+}
+
+int main(int, char**)
+{
+  int threads = 5;
+
+  countDown.store(threads);
+  m.lock();
+  std::vector<std::thread> v;
+  for (int i = 0; i < threads; ++i)
+    v.push_back(support::make_test_thread(readerMustWait));
+  while (countDown > 0)
+    std::this_thread::yield();
+  readerStart = Clock::now();
+  std::this_thread::sleep_for(WaitTime);
+  m.unlock();
+  for (auto& t : v)
+    t.join();
+
+  countDown.store(threads + 1);
+  m.lock_shared();
+  for (auto& t : v)
+    t = support::make_test_thread(reader);
+  std::thread q = support::make_test_thread(writerMustWait);
+  while (countDown > 0)
+    std::this_thread::yield();
+  writerStart = Clock::now();
+  std::this_thread::sleep_for(WaitTime);
+  m.unlock_shared();
+  for (auto& t : v)
+    t.join();
+  q.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock.pass.cpp
new file mode 100644
index 0000000..20eda45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// ALLOW_RETRIES: 2
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// bool try_lock();
+
+#include <shared_mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    while(!m.try_lock())
+        ;
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_for.pass.cpp
new file mode 100644
index 0000000..fd08a2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_for.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+// ALLOW_RETRIES: 2
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// template <class Rep, class Period>
+//     bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <shared_mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(50);
+#else
+ms Tolerance = ms(50 * 5);
+#endif
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_for(WaitTime + Tolerance) == true);
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_for(WaitTime) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(WaitTime);
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(WaitTime + Tolerance);
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared.pass.cpp
new file mode 100644
index 0000000..d1f37a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// ALLOW_RETRIES: 2
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// bool try_lock_shared();
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(200);
+#else
+ms Tolerance = ms(200 * 5);
+#endif
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock_shared());
+    assert(!m.try_lock_shared());
+    assert(!m.try_lock_shared());
+    while(!m.try_lock_shared())
+        std::this_thread::yield();
+    time_point t1 = Clock::now();
+    m.unlock_shared();
+    ns d = t1 - t0 - ms(250);
+    assert(d < Tolerance);  // within tolerance
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < 5; ++i)
+        v.push_back(support::make_test_thread(f));
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    for (auto& t : v)
+        t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_for.pass.cpp
new file mode 100644
index 0000000..1f8795e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_for.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// ALLOW_RETRIES: 3
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// template <class Rep, class Period>
+//     bool try_lock_shared_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <shared_mutex>
+#include <thread>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(50);
+#else
+ms Tolerance = ms(50 * 5);
+#endif
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_shared_for(WaitTime + Tolerance) == true);
+    time_point t1 = Clock::now();
+    m.unlock_shared();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_shared_for(WaitTime) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::vector<std::thread> v;
+        for (int i = 0; i < 5; ++i)
+            v.push_back(support::make_test_thread(f1));
+        std::this_thread::sleep_for(WaitTime);
+        m.unlock();
+        for (auto& t : v)
+            t.join();
+    }
+    {
+        m.lock();
+        std::vector<std::thread> v;
+        for (int i = 0; i < 5; ++i)
+            v.push_back(support::make_test_thread(f2));
+        std::this_thread::sleep_for(WaitTime + Tolerance);
+        m.unlock();
+        for (auto& t : v)
+            t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_until.pass.cpp
new file mode 100644
index 0000000..a3a37d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_shared_until.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// ALLOW_RETRIES: 2
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// template <class Clock, class Duration>
+//     bool try_lock_shared_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <thread>
+
+#include <atomic>
+#include <cassert>
+#include <cstdlib>
+#include <shared_mutex>
+#include <vector>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+ms SuccessWaitTime = ms(5000); // Some machines are busy or slow or both
+ms FailureWaitTime = ms(50);
+
+// On busy or slow machines, there can be a significant delay between thread
+// creation and thread start, so we use an atomic variable to signal that the
+// thread is actually executing.
+static std::atomic<unsigned> countDown;
+
+void f1()
+{
+  --countDown;
+  time_point t0 = Clock::now();
+  assert(m.try_lock_shared_until(Clock::now() + SuccessWaitTime) == true);
+  time_point t1 = Clock::now();
+  m.unlock_shared();
+  assert(t1 - t0 <= SuccessWaitTime);
+}
+
+void f2()
+{
+  time_point t0 = Clock::now();
+  assert(m.try_lock_shared_until(Clock::now() + FailureWaitTime) == false);
+  assert(Clock::now() - t0 >= FailureWaitTime);
+}
+
+int main(int, char**)
+{
+  int threads = 5;
+  {
+    countDown.store(threads);
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < threads; ++i)
+      v.push_back(support::make_test_thread(f1));
+    while (countDown > 0)
+      std::this_thread::yield();
+    m.unlock();
+    for (auto& t : v)
+      t.join();
+  }
+  {
+    m.lock();
+    std::vector<std::thread> v;
+    for (int i = 0; i < threads; ++i)
+      v.push_back(support::make_test_thread(f2));
+    for (auto& t : v)
+      t.join();
+    m.unlock();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_until.pass.cpp
new file mode 100644
index 0000000..5ac3cfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_until.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// ALLOW_RETRIES: 2
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+// template <class Clock, class Duration>
+//     bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <shared_mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+
+ms WaitTime = ms(250);
+
+// Thread sanitizer causes more overhead and will sometimes cause this test
+// to fail. To prevent this we give Thread sanitizer more time to complete the
+// test.
+#if !defined(TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT)
+ms Tolerance = ms(50);
+#else
+ms Tolerance = ms(50 * 5);
+#endif
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_until(Clock::now() + WaitTime + Tolerance) == true);
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_until(Clock::now() + WaitTime) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - WaitTime;
+    assert(d < Tolerance);  // within tolerance
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(WaitTime);
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(WaitTime + Tolerance);
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_until_deadlock_bug.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_until_deadlock_bug.pass.cpp
new file mode 100644
index 0000000..9589c8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.sharedtimedmutex.requirements/thread.sharedtimedmutex.class/try_lock_until_deadlock_bug.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// shared_timed_mutex was introduced in macosx10.12
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11}}
+
+// <shared_mutex>
+
+// class shared_timed_mutex;
+
+#include <shared_mutex>
+
+#include <atomic>
+#include <chrono>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::shared_timed_mutex m;
+
+const int total_readers = 2;
+std::atomic<int> readers_started(0);
+std::atomic<int> readers_finished(0);
+
+// Wait for the readers to start then try and acquire the write lock.
+void writer_one() {
+  while (readers_started != total_readers) {}
+  bool b = m.try_lock_for(std::chrono::milliseconds(500));
+  assert(b == false);
+}
+
+void blocked_reader() {
+  ++readers_started;
+  // Wait until writer_one is waiting for the write lock.
+  while (m.try_lock_shared()) {
+    m.unlock_shared();
+  }
+  // Attempt to get the read lock. writer_one should be blocking us because
+  // writer_one is blocked by main.
+  m.lock_shared();
+  ++readers_finished;
+  m.unlock_shared();
+}
+
+int main(int, char**)
+{
+  typedef std::chrono::steady_clock Clock;
+
+  m.lock_shared();
+  std::thread t1 = support::make_test_thread(writer_one);
+  // create some readers
+  std::thread t2 = support::make_test_thread(blocked_reader);
+  std::thread t3 = support::make_test_thread(blocked_reader);
+  // Kill the test after 10 seconds if it hasn't completed.
+  auto end_point = Clock::now() + std::chrono::seconds(10);
+  while (readers_finished != total_readers && Clock::now() < end_point) {
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+  }
+  assert(readers_finished == total_readers);
+  m.unlock_shared();
+  t1.join();
+  t2.join();
+  t3.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/assign.compile.fail.cpp
new file mode 100644
index 0000000..d0fabc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/assign.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class timed_mutex;
+
+// timed_mutex& operator=(const timed_mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::timed_mutex m0;
+    std::timed_mutex m1;
+    m1 = m0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/copy.compile.fail.cpp
new file mode 100644
index 0000000..a3efb2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/copy.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class timed_mutex;
+
+// timed_mutex(const timed_mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::timed_mutex m0;
+    std::timed_mutex m1(m0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/default.pass.cpp
new file mode 100644
index 0000000..d13a0ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/default.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// class timed_mutex;
+
+// timed_mutex();
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::timed_mutex m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/lock.pass.cpp
new file mode 100644
index 0000000..a2a91bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/lock.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class timed_mutex;
+
+// void lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    m.lock();
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock.pass.cpp
new file mode 100644
index 0000000..02d0874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class timed_mutex;
+
+// bool try_lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    while(!m.try_lock())
+        ;
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock_for.pass.cpp
new file mode 100644
index 0000000..acfa556
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock_for.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class timed_mutex;
+
+// template <class Rep, class Period>
+//     bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_for(ms(300)) == true);
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_for(ms(250)) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(ms(250));
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(ms(300));
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock_until.pass.cpp
new file mode 100644
index 0000000..23385c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.class/try_lock_until.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class timed_mutex;
+
+// template <class Clock, class Duration>
+//     bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_until(Clock::now() + ms(300)) == true);
+    time_point t1 = Clock::now();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_until(Clock::now() + ms(250)) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(ms(250));
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(ms(300));
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/assign.compile.fail.cpp
new file mode 100644
index 0000000..44be06d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/assign.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// recursive_timed_mutex& operator=(const recursive_timed_mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::recursive_timed_mutex m0;
+    std::recursive_timed_mutex m1;
+    m1 = m0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/copy.compile.fail.cpp
new file mode 100644
index 0000000..154a019
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/copy.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// recursive_timed_mutex(const recursive_timed_mutex&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::recursive_timed_mutex m0;
+    std::recursive_timed_mutex m1(m0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/default.pass.cpp
new file mode 100644
index 0000000..73e2e7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/default.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// recursive_timed_mutex();
+
+#include <mutex>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::recursive_timed_mutex m;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp
new file mode 100644
index 0000000..91c6f1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// void lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::recursive_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    m.lock();
+    time_point t1 = Clock::now();
+    m.lock();
+    m.unlock();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock.pass.cpp
new file mode 100644
index 0000000..5915698
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// bool try_lock();
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::recursive_timed_mutex m;
+
+typedef std::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f()
+{
+    time_point t0 = Clock::now();
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    assert(!m.try_lock());
+    while(!m.try_lock())
+        ;
+    time_point t1 = Clock::now();
+    assert(m.try_lock());
+    m.unlock();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(200));  // within 200ms
+}
+
+int main(int, char**)
+{
+    m.lock();
+    std::thread t = support::make_test_thread(f);
+    std::this_thread::sleep_for(ms(250));
+    m.unlock();
+    t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock_for.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock_for.pass.cpp
new file mode 100644
index 0000000..b0b2780
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock_for.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// template <class Rep, class Period>
+//     bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::recursive_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_for(ms(300)) == true);
+    time_point t1 = Clock::now();
+    assert(m.try_lock());
+    m.unlock();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ns(50000000));  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_for(ms(250)) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ns(50000000));  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(ms(250));
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(ms(300));
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock_until.pass.cpp
new file mode 100644
index 0000000..5c5807d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/try_lock_until.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// ALLOW_RETRIES: 2
+
+// <mutex>
+
+// class recursive_timed_mutex;
+
+// template <class Clock, class Duration>
+//     bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <mutex>
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::recursive_timed_mutex m;
+
+typedef std::chrono::steady_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef std::chrono::milliseconds ms;
+typedef std::chrono::nanoseconds ns;
+
+void f1()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_until(Clock::now() + ms(300)) == true);
+    time_point t1 = Clock::now();
+    assert(m.try_lock());
+    m.unlock();
+    m.unlock();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+void f2()
+{
+    time_point t0 = Clock::now();
+    assert(m.try_lock_until(Clock::now() + ms(250)) == false);
+    time_point t1 = Clock::now();
+    ns d = t1 - t0 - ms(250);
+    assert(d < ms(50));  // within 50ms
+}
+
+int main(int, char**)
+{
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f1);
+        std::this_thread::sleep_for(ms(250));
+        m.unlock();
+        t.join();
+    }
+    {
+        m.lock();
+        std::thread t = support::make_test_thread(f2);
+        std::this_thread::sleep_for(ms(300));
+        m.unlock();
+        t.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.callonce/call_once.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.callonce/call_once.pass.cpp
new file mode 100644
index 0000000..7708efc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.callonce/call_once.pass.cpp
@@ -0,0 +1,259 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct once_flag;
+
+// template<class Callable, class ...Args>
+//   void call_once(once_flag& flag, Callable&& func, Args&&... args);
+
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+typedef std::chrono::milliseconds ms;
+
+std::once_flag flg0;
+
+int init0_called = 0;
+
+void init0()
+{
+    std::this_thread::sleep_for(ms(250));
+    ++init0_called;
+}
+
+void f0()
+{
+    std::call_once(flg0, init0);
+}
+
+std::once_flag flg3;
+
+int init3_called = 0;
+int init3_completed = 0;
+
+void init3()
+{
+    ++init3_called;
+    std::this_thread::sleep_for(ms(250));
+    if (init3_called == 1)
+        TEST_THROW(1);
+    ++init3_completed;
+}
+
+void f3()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        std::call_once(flg3, init3);
+    }
+    catch (...)
+    {
+    }
+#endif
+}
+
+#if TEST_STD_VER >= 11
+
+struct init1
+{
+    static int called;
+
+    void operator()(int i) {called += i;}
+};
+
+int init1::called = 0;
+
+std::once_flag flg1;
+
+void f1()
+{
+    std::call_once(flg1, init1(), 1);
+}
+
+struct init2
+{
+    static int called;
+
+    void operator()(int i, int j) const {called += i + j;}
+};
+
+int init2::called = 0;
+
+std::once_flag flg2;
+
+void f2()
+{
+    std::call_once(flg2, init2(), 2, 3);
+    std::call_once(flg2, init2(), 4, 5);
+}
+
+#endif // TEST_STD_VER >= 11
+
+std::once_flag flg41;
+std::once_flag flg42;
+
+int init41_called = 0;
+int init42_called = 0;
+
+void init42();
+
+void init41()
+{
+    std::this_thread::sleep_for(ms(250));
+    ++init41_called;
+}
+
+void init42()
+{
+    std::this_thread::sleep_for(ms(250));
+    ++init42_called;
+}
+
+void f41()
+{
+    std::call_once(flg41, init41);
+    std::call_once(flg42, init42);
+}
+
+void f42()
+{
+    std::call_once(flg42, init42);
+    std::call_once(flg41, init41);
+}
+
+#if TEST_STD_VER >= 11
+
+class MoveOnly
+{
+#if !defined(__clang__)
+   // GCC 4.8 complains about the following being private
+public:
+    MoveOnly(const MoveOnly&)
+    {
+    }
+#else
+    MoveOnly(const MoveOnly&);
+#endif
+public:
+    MoveOnly() {}
+    MoveOnly(MoveOnly&&) {}
+
+    void operator()(MoveOnly&&)
+    {
+    }
+};
+
+class NonCopyable
+{
+#if !defined(__clang__)
+   // GCC 4.8 complains about the following being private
+public:
+    NonCopyable(const NonCopyable&)
+    {
+    }
+#else
+    NonCopyable(const NonCopyable&);
+#endif
+public:
+    NonCopyable() {}
+
+    void operator()(int&) {}
+};
+
+// reference qualifiers on functions are a C++11 extension
+struct RefQual
+{
+    int lv_called, rv_called;
+
+    RefQual() : lv_called(0), rv_called(0) {}
+
+    void operator()() & { ++lv_called; }
+    void operator()() && { ++rv_called; }
+};
+
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+    // check basic functionality
+    {
+        std::thread t0 = support::make_test_thread(f0);
+        std::thread t1 = support::make_test_thread(f0);
+        t0.join();
+        t1.join();
+        assert(init0_called == 1);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    // check basic exception safety
+    {
+        std::thread t0 = support::make_test_thread(f3);
+        std::thread t1 = support::make_test_thread(f3);
+        t0.join();
+        t1.join();
+        assert(init3_called == 2);
+        assert(init3_completed == 1);
+    }
+#endif
+    // check deadlock avoidance
+    {
+        std::thread t0 = support::make_test_thread(f41);
+        std::thread t1 = support::make_test_thread(f42);
+        t0.join();
+        t1.join();
+        assert(init41_called == 1);
+        assert(init42_called == 1);
+    }
+#if TEST_STD_VER >= 11
+    // check functors with 1 arg
+    {
+        std::thread t0 = support::make_test_thread(f1);
+        std::thread t1 = support::make_test_thread(f1);
+        t0.join();
+        t1.join();
+        assert(init1::called == 1);
+    }
+    // check functors with 2 args
+    {
+        std::thread t0 = support::make_test_thread(f2);
+        std::thread t1 = support::make_test_thread(f2);
+        t0.join();
+        t1.join();
+        assert(init2::called == 5);
+    }
+    {
+        std::once_flag f;
+        std::call_once(f, MoveOnly(), MoveOnly());
+    }
+    // check LWG2442: call_once() shouldn't DECAY_COPY()
+    {
+        std::once_flag f;
+        int i = 0;
+        std::call_once(f, NonCopyable(), i);
+    }
+// reference qualifiers on functions are a C++11 extension
+    {
+        std::once_flag f1, f2;
+        RefQual rq;
+        std::call_once(f1, rq);
+        assert(rq.lv_called == 1);
+        std::call_once(f2, std::move(rq));
+        assert(rq.rv_called == 1);
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.callonce/race.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.callonce/race.pass.cpp
new file mode 100644
index 0000000..1bc608a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.callonce/race.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct once_flag;
+
+// template<class Callable, class ...Args>
+//   void call_once(once_flag& flag, Callable&& func, Args&&... args);
+
+// This test is supposed to be run with ThreadSanitizer and verifies that
+// call_once properly synchronizes user state, a data race that was fixed
+// in r280621.
+
+#include <mutex>
+#include <thread>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::once_flag flg0;
+long global = 0;
+
+void init0()
+{
+    ++global;
+}
+
+void f0()
+{
+    std::call_once(flg0, init0);
+    assert(global == 1);
+}
+
+int main(int, char**)
+{
+    std::thread t0 = support::make_test_thread(f0);
+    std::thread t1 = support::make_test_thread(f0);
+    t0.join();
+    t1.join();
+    assert(global == 1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/assign.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/assign.compile.fail.cpp
new file mode 100644
index 0000000..73d86a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/assign.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct once_flag;
+
+// once_flag& operator=(const once_flag&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::once_flag f;
+    std::once_flag f2;
+    f2 = f;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/copy.compile.fail.cpp
new file mode 100644
index 0000000..f84ce8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/copy.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct once_flag;
+
+// once_flag(const once_flag&) = delete;
+
+#include <mutex>
+
+int main(int, char**)
+{
+    std::once_flag f;
+    std::once_flag f2(f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp
new file mode 100644
index 0000000..e99f941
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.mutex/thread.once/thread.once.onceflag/default.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+
+// <mutex>
+
+// struct once_flag;
+
+// constexpr once_flag() noexcept;
+
+#include <mutex>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::once_flag f;
+    (void)f;
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::once_flag f;
+    (void)f;
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.exception/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.exception/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.exception/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.basic/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.basic/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.basic/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.req/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.req/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.req/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.timed/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.timed/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.lockable/thread.req.lockable.timed/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.native/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.native/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.native/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.paramname/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.paramname/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.paramname/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.timing/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.timing/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.req/thread.req.timing/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/acquire.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/acquire.pass.cpp
new file mode 100644
index 0000000..32dd77c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/acquire.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <semaphore>
+
+#include <semaphore>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::counting_semaphore<> s(2);
+
+  std::thread t = support::make_test_thread([&](){
+    s.acquire();
+  });
+  t.join();
+
+  s.acquire();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/binary.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/binary.pass.cpp
new file mode 100644
index 0000000..fe1d49f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/binary.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <semaphore>
+
+#include <semaphore>
+#include <chrono>
+#include <thread>
+#include <type_traits>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+static_assert(std::is_same<std::binary_semaphore, std::counting_semaphore<1>>::value, "");
+
+int main(int, char**)
+{
+  std::binary_semaphore s(1);
+
+  auto l = [&](){
+    for(int i = 0; i < 1024; ++i) {
+        s.acquire();
+        std::this_thread::sleep_for(std::chrono::microseconds(1));
+        s.release();
+    }
+  };
+
+  std::thread t = support::make_test_thread(l);
+  l();
+
+  t.join();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/ctor.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/ctor.compile.pass.cpp
new file mode 100644
index 0000000..28ccc01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/ctor.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <semaphore>
+
+// constexpr explicit counting_semaphore(ptrdiff_t desired);
+
+#include <semaphore>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(!std::is_default_constructible<std::binary_semaphore>::value, "");
+static_assert(!std::is_default_constructible<std::counting_semaphore<>>::value, "");
+
+static_assert(!std::is_convertible<int, std::binary_semaphore>::value, "");
+static_assert(!std::is_convertible<int, std::counting_semaphore<>>::value, "");
+
+#if TEST_STD_VER > 17
+// Test constexpr-constructibility. (But not destructibility.)
+constinit std::binary_semaphore bs(1);
+constinit std::counting_semaphore<> cs(1);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/max.pass.cpp
new file mode 100644
index 0000000..5a3026b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/max.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// <semaphore>
+
+#include <semaphore>
+#include <thread>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  static_assert(std::counting_semaphore<>::max() >= 1, "");
+  static_assert(std::counting_semaphore<1>::max() >= 1, "");
+  static_assert(std::counting_semaphore<std::numeric_limits<int>::max()>::max() >= std::numeric_limits<int>::max(), "");
+  static_assert(std::counting_semaphore<std::numeric_limits<ptrdiff_t>::max()>::max() == std::numeric_limits<ptrdiff_t>::max(), "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/release.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/release.pass.cpp
new file mode 100644
index 0000000..31a9264
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/release.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <semaphore>
+
+#include <semaphore>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::counting_semaphore<> s(0);
+
+  s.release();
+  s.acquire();
+
+  std::thread t = support::make_test_thread([&](){
+    s.acquire();
+  });
+  s.release(2);
+  t.join();
+  s.acquire();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/timed.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/timed.pass.cpp
new file mode 100644
index 0000000..9cdee8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/timed.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <semaphore>
+
+#include <semaphore>
+#include <thread>
+#include <chrono>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  auto const start = std::chrono::steady_clock::now();
+
+  std::counting_semaphore<> s(0);
+
+  assert(!s.try_acquire_until(start + std::chrono::milliseconds(250)));
+  assert(!s.try_acquire_for(std::chrono::milliseconds(250)));
+
+  std::thread t = support::make_test_thread([&](){
+    std::this_thread::sleep_for(std::chrono::milliseconds(250));
+    s.release();
+    std::this_thread::sleep_for(std::chrono::milliseconds(250));
+    s.release();
+  });
+
+  assert(s.try_acquire_until(start + std::chrono::seconds(2)));
+  assert(s.try_acquire_for(std::chrono::seconds(2)));
+  t.join();
+
+  auto const end = std::chrono::steady_clock::now();
+  assert(end - start < std::chrono::seconds(10));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/try_acquire.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/try_acquire.pass.cpp
new file mode 100644
index 0000000..d6c898e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.semaphore/try_acquire.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03, c++11
+
+// This test requires the dylib support introduced in D68480, which shipped in macOS 11.0.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <semaphore>
+
+#include <cassert>
+#include <semaphore>
+#include <thread>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  std::counting_semaphore<> s(1);
+
+  assert(s.try_acquire());
+  assert(!s.try_acquire());
+  s.release();
+  assert(s.try_acquire());
+  assert(!s.try_acquire());
+  s.release(2);
+  std::thread t = support::make_test_thread([&](){
+    assert(s.try_acquire());
+  });
+  t.join();
+  assert(s.try_acquire());
+  assert(!s.try_acquire());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.algorithm/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.algorithm/swap.pass.cpp
new file mode 100644
index 0000000..ecca7e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.algorithm/swap.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// void swap(thread& x, thread& y);
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        std::thread::id id0 = t0.get_id();
+        std::thread t1;
+        std::thread::id id1 = t1.get_id();
+        swap(t0, t1);
+        assert(t0.get_id() == id1);
+        assert(t1.get_id() == id0);
+        t1.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/copy.compile.fail.cpp
new file mode 100644
index 0000000..9d7e104
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/copy.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <thread>
+
+// class thread
+
+// thread& operator=(thread&& t);
+
+#include <thread>
+
+int main(int, char**)
+{
+    std::thread t0;
+    std::thread t1;
+    t0 = t1;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/move.pass.cpp
new file mode 100644
index 0000000..b5d0b91
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/move.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// thread& operator=(thread&& t);
+
+#include <thread>
+#include <cassert>
+#include <utility>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    assert(G::n_alive == 0);
+    assert(!G::op_run);
+    {
+        G g;
+        assert(G::n_alive == 1);
+        assert(!G::op_run);
+
+        std::thread t0 = support::make_test_thread(g);
+        std::thread::id id = t0.get_id();
+
+        std::thread t1;
+        t1 = std::move(t0);
+        assert(t1.get_id() == id);
+        assert(t0.get_id() == std::thread::id());
+
+        t1.join();
+        assert(G::n_alive == 1);
+        assert(G::op_run);
+    }
+    assert(G::n_alive == 0);
+    assert(G::op_run);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/move2.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/move2.pass.cpp
new file mode 100644
index 0000000..9c31a2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.assign/move2.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// thread& operator=(thread&& t);
+
+#include <thread>
+#include <cassert>
+#include <cstdlib>
+#include <exception>
+#include <utility>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+struct G
+{
+    void operator()() { }
+};
+
+void f1()
+{
+    std::_Exit(0);
+}
+
+int main(int, char**)
+{
+    std::set_terminate(f1);
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        std::thread t1;
+        t0 = std::move(t1);
+        assert(false);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/F.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/F.pass.cpp
new file mode 100644
index 0000000..fc3d5c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/F.pass.cpp
@@ -0,0 +1,216 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <thread>
+
+// class thread
+
+// template <class F, class ...Args> thread(F&& f, Args&&... args);
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <thread>
+#include <new>
+#include <atomic>
+#include <cstdlib>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+std::atomic<unsigned> throw_one(0xFFFF);
+std::atomic<unsigned> outstanding_new(0);
+
+
+void* operator new(std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    unsigned expected = throw_one;
+    do {
+        if (expected == 0) TEST_THROW(std::bad_alloc());
+    } while (!throw_one.compare_exchange_weak(expected, expected - 1));
+    ++outstanding_new;
+    void* ret = std::malloc(s);
+    if (!ret) std::abort(); // placate MSVC's unchecked malloc warning
+    return ret;
+}
+
+void  operator delete(void* p) TEST_NOEXCEPT
+{
+    if (!p) return;
+    --outstanding_new;
+    std::free(p);
+}
+
+bool f_run = false;
+
+struct F {
+    std::vector<int> v_;  // so f's copy-ctor calls operator new
+    explicit F() : v_(10) {}
+    void operator()() const { f_run = true; }
+};
+F f;
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+
+    void operator()(int i, double j)
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        assert(i == 5);
+        assert(j == 5.5);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+#if TEST_STD_VER >= 11
+
+class MoveOnly
+{
+    MoveOnly(const MoveOnly&);
+public:
+    MoveOnly() {}
+    MoveOnly(MoveOnly&&) {}
+
+    void operator()(MoveOnly&&)
+    {
+    }
+};
+
+#endif
+
+// Test throwing std::bad_alloc
+//-----------------------------
+// Concerns:
+//  A Each allocation performed during thread construction should be performed
+//    in the parent thread so that std::terminate is not called if
+//    std::bad_alloc is thrown by new.
+//  B std::thread's constructor should properly handle exceptions and not leak
+//    memory.
+// Plan:
+//  1 Create a thread and count the number of allocations, 'numAllocs', it
+//    performs.
+//  2 For each allocation performed run a test where that allocation throws.
+//    2.1 check that the exception can be caught in the parent thread.
+//    2.2 Check that the functor has not been called.
+//    2.3 Check that no memory allocated by the creation of the thread is leaked.
+//  3 Finally check that a thread runs successfully if we throw after
+//    'numAllocs + 1' allocations.
+
+int numAllocs;
+
+void test_throwing_new_during_thread_creation() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    throw_one = 0xFFF;
+    {
+        std::thread t(f);
+        t.join();
+    }
+    numAllocs = 0xFFF - throw_one;
+    // i <= numAllocs means the last iteration is expected not to throw.
+    for (int i=0; i <= numAllocs; ++i) {
+        throw_one = i;
+        f_run = false;
+        unsigned old_outstanding = outstanding_new;
+        try {
+            std::thread t(f);
+            assert(i == numAllocs); // Only final iteration will not throw.
+            t.join();
+            assert(f_run);
+        } catch (std::bad_alloc const&) {
+            assert(i < numAllocs);
+            assert(!f_run); // (2.2)
+        }
+        ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(old_outstanding == outstanding_new); // (2.3)
+    }
+    f_run = false;
+    throw_one = 0xFFF;
+#endif
+}
+
+int main(int, char**)
+{
+    test_throwing_new_during_thread_creation();
+    {
+        std::thread t(f);
+        t.join();
+        assert(f_run == true);
+    }
+
+    {
+        assert(G::n_alive == 0);
+        assert(!G::op_run);
+        {
+            G g;
+            std::thread t(g);
+            t.join();
+        }
+        assert(G::n_alive == 0);
+        assert(G::op_run);
+    }
+    G::op_run = false;
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    // The test below expects `std::thread` to call `new`, which may not be the
+    // case for all implementations.
+    LIBCPP_ASSERT(numAllocs > 0); // libc++ should call new.
+    if (numAllocs > 0) {
+        try
+        {
+            throw_one = 0;
+            assert(G::n_alive == 0);
+            assert(!G::op_run);
+            std::thread t((G()));
+            assert(false);
+        }
+        catch (std::bad_alloc const&)
+        {
+            throw_one = 0xFFFF;
+            assert(G::n_alive == 0);
+            assert(!G::op_run);
+        }
+    }
+#endif
+#if TEST_STD_VER >= 11
+    {
+        assert(G::n_alive == 0);
+        assert(!G::op_run);
+        {
+            G g;
+            std::thread t(g, 5, 5.5);
+            t.join();
+        }
+        assert(G::n_alive == 0);
+        assert(G::op_run);
+    }
+    {
+        std::thread t = std::thread(MoveOnly(), MoveOnly());
+        t.join();
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/constr.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/constr.compile.fail.cpp
new file mode 100644
index 0000000..dd472f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/constr.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <thread>
+
+// class thread
+//     template <class _Fp, class ..._Args,
+//         explicit thread(_Fp&& __f, _Args&&... __args);
+//  This constructor shall not participate in overload resolution
+//       if decay<F>::type is the same type as std::thread.
+
+
+#include <thread>
+
+int main(int, char**)
+{
+    volatile std::thread t1;
+    std::thread t2 ( t1, 1, 2.0 );
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/copy.compile.fail.cpp
new file mode 100644
index 0000000..f0e288b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/copy.compile.fail.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <thread>
+
+// class thread
+
+// thread(const thread&) = delete;
+
+#include <thread>
+
+int main(int, char**)
+{
+    std::thread t0; (void)t0;
+    std::thread t1(t0); (void)t1;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/default.pass.cpp
new file mode 100644
index 0000000..9e0c50d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// thread();
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread t;
+    assert(t.get_id() == std::thread::id());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/move.pass.cpp
new file mode 100644
index 0000000..b9f733c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/move.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// thread(thread&& t);
+
+#include <thread>
+#include <cassert>
+#include <cstdlib>
+#include <utility>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    assert(G::n_alive == 0);
+    assert(!G::op_run);
+    {
+        G g;
+        assert(G::n_alive == 1);
+        assert(!G::op_run);
+
+        std::thread t0 = support::make_test_thread(g);
+        std::thread::id id = t0.get_id();
+
+        std::thread t1 = std::move(t0);
+        assert(t1.get_id() == id);
+        assert(t0.get_id() == std::thread::id());
+
+        t1.join();
+        assert(G::n_alive == 1);
+        assert(G::op_run);
+    }
+    assert(G::n_alive == 0);
+    assert(G::op_run);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..9ba8d95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.constr/robust_against_adl.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <thread>
+
+// class thread
+
+// template <class F, class ...Args> thread(F&& f, Args&&... args);
+
+#include <thread>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+void f(Holder<Incomplete> *) { }
+
+int main(int, char **)
+{
+    Holder<Incomplete> *p = nullptr;
+    std::thread t(f, p);
+    t.join();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.destr/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.destr/dtor.pass.cpp
new file mode 100644
index 0000000..7766505
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.destr/dtor.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+
+// <thread>
+
+// class thread
+
+// ~thread();
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+void f1()
+{
+    std::_Exit(0);
+}
+
+int main(int, char**)
+{
+    std::set_terminate(f1);
+    {
+        assert(G::n_alive == 0);
+        assert(!G::op_run);
+        G g;
+        {
+          std::thread t = support::make_test_thread(g);
+          std::this_thread::sleep_for(std::chrono::milliseconds(250));
+        }
+    }
+    assert(false);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/assign.pass.cpp
new file mode 100644
index 0000000..4095ac0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/assign.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread::id
+
+// id& operator=(const id&) = default;
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread::id id0;
+    std::thread::id id1;
+    id1 = id0;
+    assert(id1 == id0);
+    id1 = std::this_thread::get_id();
+    assert(id1 != id0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/cmp.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/cmp.pass.cpp
new file mode 100644
index 0000000..7be937a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/cmp.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread::id
+
+// bool operator==(thread::id x, thread::id y) noexcept;
+// bool operator!=(thread::id x, thread::id y) noexcept;
+// bool operator< (thread::id x, thread::id y) noexcept;
+// bool operator<=(thread::id x, thread::id y) noexcept;
+// bool operator> (thread::id x, thread::id y) noexcept;
+// bool operator>=(thread::id x, thread::id y) noexcept;
+// strong_ordering operator<=>(thread::id x, thread::id y) noexcept;
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**) {
+  AssertComparisonsAreNoexcept<std::thread::id>();
+  AssertComparisonsReturnBool<std::thread::id>();
+#if TEST_STD_VER > 17
+  AssertOrderAreNoexcept<std::thread::id>();
+  AssertOrderReturn<std::strong_ordering, std::thread::id>();
+#endif
+
+  std::thread::id id1;
+  std::thread::id id2;
+  std::thread::id id3 = std::this_thread::get_id();
+
+  // `id1` and `id2` should compare equal
+  assert(testComparisons(id1, id2, /*isEqual*/ true, /*isLess*/ false));
+#if TEST_STD_VER > 17
+  assert(testOrder(id1, id2, std::strong_ordering::equal));
+#endif
+
+  // Test `t1` and `t3` which are not equal
+  bool isLess = id1 < id3;
+  assert(testComparisons(id1, id3, /*isEqual*/ false, isLess));
+#if TEST_STD_VER > 17
+  assert(testOrder(id1, id3, isLess ? std::strong_ordering::less : std::strong_ordering::greater));
+#endif
+
+  // Regression tests for https://github.com/llvm/llvm-project/issues/56187
+  // libc++ previously declared the comparison operators as hidden friends
+  // which was non-conforming.
+  assert(std::operator==(id1, id2));
+#if TEST_STD_VER <= 17
+  assert(!std::operator!=(id1, id2));
+  assert(!std::operator<(id1, id2));
+  assert(std::operator<=(id1, id2));
+  assert(!std::operator>(id1, id2));
+  assert(std::operator>=(id1, id2));
+#else
+  assert(std::operator<=>(id1, id2) == std::strong_ordering::equal);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/copy.pass.cpp
new file mode 100644
index 0000000..141903c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/copy.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread::id
+
+// id(const id&) = default;
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread::id id0;
+    std::thread::id id1 = id0;
+    assert(id1 == id0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/default.pass.cpp
new file mode 100644
index 0000000..6a14620
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread::id
+
+// id();
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread::id id;
+    assert(id == std::thread::id());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/enabled_hashes.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/enabled_hashes.pass.cpp
new file mode 100644
index 0000000..52725c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/enabled_hashes.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: c++03
+
+// <thread>
+
+// Test that <thread> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <thread>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  {
+    test_hash_enabled_for_type<std::thread::id>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/stream.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/stream.pass.cpp
new file mode 100644
index 0000000..9050d9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/stream.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: no-localization
+
+// <thread>
+
+// class thread::id
+
+// template<class charT, class traits>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& out, thread::id id);
+
+#include <thread>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread::id id0 = std::this_thread::get_id();
+    std::ostringstream os;
+    os << id0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/thread_id.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/thread_id.pass.cpp
new file mode 100644
index 0000000..60c16cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/thread_id.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+// Not very portable
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread::id id1;
+    std::thread::id id2 = std::this_thread::get_id();
+    typedef std::hash<std::thread::id> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<typename H::argument_type, std::thread::id>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(id2));
+    H h;
+    assert(h(id1) != h(id2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/detach.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/detach.pass.cpp
new file mode 100644
index 0000000..a6b3a34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/detach.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// void detach();
+
+#include <thread>
+#include <atomic>
+#include <system_error>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::atomic_bool done(false);
+
+class G
+{
+    int alive_;
+    bool done_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1), done_(false)
+    {
+        ++n_alive;
+    }
+
+    G(const G& g) : alive_(g.alive_), done_(false)
+    {
+        ++n_alive;
+    }
+    ~G()
+    {
+        alive_ = 0;
+        --n_alive;
+        if (done_) done = true;
+    }
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+        done_ = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+void foo() { done = true; }
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        assert(t0.joinable());
+        t0.detach();
+        assert(!t0.joinable());
+        while (!done) {}
+        assert(G::op_run);
+        assert(G::n_alive == 1);
+    }
+    assert(G::n_alive == 0);
+    done = false;
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::thread t0 = support::make_test_thread(foo);
+        assert(t0.joinable());
+        t0.detach();
+        assert(!t0.joinable());
+        try {
+            t0.detach();
+        } catch (std::system_error const&) {
+        }
+        // Wait to make sure that the detached thread has started up.
+        // Without this, we could exit main and start destructing global
+        // resources that are needed when the thread starts up, while the
+        // detached thread would start up only later.
+        while (!done) {}
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/get_id.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/get_id.pass.cpp
new file mode 100644
index 0000000..2682750
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/get_id.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// id get_id() const;
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        std::thread::id id0 = t0.get_id();
+        std::thread t1;
+        std::thread::id id1 = t1.get_id();
+        assert(t0.get_id() == id0);
+        assert(id0 != id1);
+        assert(t1.get_id() == std::thread::id());
+        t0.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/join.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/join.pass.cpp
new file mode 100644
index 0000000..509d019
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/join.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// void join();
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+#include <system_error>
+#include <atomic>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+std::atomic_bool done(false);
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+void foo() { done = true; }
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        assert(t0.joinable());
+        t0.join();
+        assert(!t0.joinable());
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            t0.join();
+            assert(false);
+        } catch (std::system_error const&) {
+        }
+#endif
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::thread t0 = support::make_test_thread(foo);
+        t0.detach();
+        try {
+            t0.join();
+            assert(false);
+        } catch (std::system_error const&) {
+        }
+        // Wait to make sure that the detached thread has started up.
+        // Without this, we could exit main and start destructing global
+        // resources that are needed when the thread starts up, while the
+        // detached thread would start up only later.
+        while (!done) {}
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/joinable.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/joinable.pass.cpp
new file mode 100644
index 0000000..32fed90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/joinable.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// bool joinable() const;
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        assert(t0.joinable());
+        t0.join();
+        assert(!t0.joinable());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/swap.pass.cpp
new file mode 100644
index 0000000..ab5f891
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.member/swap.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// void swap(thread& t);
+
+#include <thread>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "make_test_thread.h"
+#include "test_macros.h"
+
+class G
+{
+    int alive_;
+public:
+    static int n_alive;
+    static bool op_run;
+
+    G() : alive_(1) {++n_alive;}
+    G(const G& g) : alive_(g.alive_) {++n_alive;}
+    ~G() {alive_ = 0; --n_alive;}
+
+    void operator()()
+    {
+        assert(alive_ == 1);
+        assert(n_alive >= 1);
+        op_run = true;
+    }
+};
+
+int G::n_alive = 0;
+bool G::op_run = false;
+
+int main(int, char**)
+{
+    {
+        G g;
+        std::thread t0 = support::make_test_thread(g);
+        std::thread::id id0 = t0.get_id();
+        std::thread t1;
+        std::thread::id id1 = t1.get_id();
+        t0.swap(t1);
+        assert(t0.get_id() == id1);
+        assert(t1.get_id() == id0);
+        t1.join();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.static/hardware_concurrency.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.static/hardware_concurrency.pass.cpp
new file mode 100644
index 0000000..e00e16a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.static/hardware_concurrency.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// class thread
+
+// unsigned hardware_concurrency();
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::thread::hardware_concurrency() > 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/get_id.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/get_id.pass.cpp
new file mode 100644
index 0000000..5b0df20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/get_id.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// thread::id this_thread::get_id();
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::thread::id id = std::this_thread::get_id();
+    assert(id != std::thread::id());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_for_tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_for_tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..2be9cb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_for_tested_elsewhere.pass.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <thread>
+
+// template <class Rep, class Period>
+//   void sleep_for(const chrono::duration<Rep, Period>& rel_time);
+
+// The std::this_thread::sleep_for test requires POSIX specific headers and
+// is therefore non-standard. For this reason the test lives under the 'libcxx'
+// subdirectory.
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_until.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_until.pass.cpp
new file mode 100644
index 0000000..3b4ae20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_until.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// template <class Clock, class Duration>
+//   void sleep_until(const chrono::time_point<Clock, Duration>& abs_time);
+
+#include <thread>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  typedef std::chrono::system_clock Clock;
+  typedef Clock::time_point time_point;
+  std::chrono::milliseconds ms(500);
+  time_point t0 = Clock::now();
+  std::this_thread::sleep_until(t0 + ms);
+  time_point t1 = Clock::now();
+  // NOTE: Operating systems are (by default) best effort and therefore we may
+  // have slept longer, perhaps much longer than we requested.
+  assert(t1 - t0 >= ms);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/yield.pass.cpp b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/yield.pass.cpp
new file mode 100644
index 0000000..8084dc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/thread/thread.threads/thread.thread.this/yield.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <thread>
+
+// void this_thread::yield();
+
+#include <thread>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::this_thread::yield();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/clock.h b/app/src/main/cpp/libcxx/test/std/time/clock.h
new file mode 100644
index 0000000..882238a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/clock.h
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CLOCK_H
+#define CLOCK_H
+
+#include <chrono>
+
+class Clock
+{
+    typedef std::chrono::nanoseconds                 duration;
+    typedef duration::rep                            rep;
+    typedef duration::period                         period;
+    typedef std::chrono::time_point<Clock, duration> time_point;
+    static const bool is_steady =                    false;
+
+    static time_point now();
+};
+
+#endif // CLOCK_H
diff --git a/app/src/main/cpp/libcxx/test/std/time/days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/days.pass.cpp
new file mode 100644
index 0000000..c4d3bb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/days.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// using days = duration<signed integer type of at least 25 bits, ratio_multiply<ratio<24>, hours::period>>;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::days D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 25, "");
+    static_assert(std::is_same_v<Period, std::ratio_multiply<std::ratio<24>, std::chrono::hours::period>>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/hours.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/hours.pass.cpp
new file mode 100644
index 0000000..52080d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/hours.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// typedef duration<signed integral type of at least 23 bits, ratio<3600>> hours;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::hours D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 22, "");
+    static_assert((std::is_same<Period, std::ratio<3600> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/microseconds.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/microseconds.pass.cpp
new file mode 100644
index 0000000..0028e66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/microseconds.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// typedef duration<signed integral type of at least 55 bits, micro> microseconds;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::microseconds D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 54, "");
+    static_assert((std::is_same<Period, std::micro>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/milliseconds.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/milliseconds.pass.cpp
new file mode 100644
index 0000000..6576a99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/milliseconds.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// typedef duration<signed integral type of at least 45 bits, milli> milliseconds;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::milliseconds D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 44, "");
+    static_assert((std::is_same<Period, std::milli>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/minutes.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/minutes.pass.cpp
new file mode 100644
index 0000000..1dee04c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/minutes.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// typedef duration<signed integral type of at least 29 bits, ratio< 60>> minutes;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::minutes D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 28, "");
+    static_assert((std::is_same<Period, std::ratio<60> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/months.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/months.pass.cpp
new file mode 100644
index 0000000..f9c8228
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/months.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// using months = duration<signed integer type of at least 20 bits, ratio_divide<years::period, ratio<12>>>;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::months D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 20, "");
+    static_assert(std::is_same_v<Period, std::ratio_divide<std::chrono::years::period, std::ratio<12>>>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/nanoseconds.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/nanoseconds.pass.cpp
new file mode 100644
index 0000000..a4a9e7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/nanoseconds.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// typedef duration<signed integral type of at least 64 bits, nano> nanoseconds;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::nanoseconds D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 63, "");
+    static_assert((std::is_same<Period, std::nano>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/rep.h b/app/src/main/cpp/libcxx/test/std/time/rep.h
new file mode 100644
index 0000000..80a0e3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/rep.h
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef REP_H
+#define REP_H
+
+#include "test_macros.h"
+
+class Rep
+{
+    int data_;
+public:
+    TEST_CONSTEXPR Rep() : data_(-1) {}
+    explicit TEST_CONSTEXPR Rep(int i) : data_(i) {}
+
+    bool TEST_CONSTEXPR operator==(int i) const {return data_ == i;}
+    bool TEST_CONSTEXPR operator==(const Rep& r) const {return data_ == r.data_;}
+
+    Rep& operator*=(Rep x) {data_ *= x.data_; return *this;}
+    Rep& operator/=(Rep x) {data_ /= x.data_; return *this;}
+};
+
+// This is PR#41130
+
+struct NotARep {};
+
+// std::chrono:::duration has only '*', '/' and '%' taking a "Rep" parameter
+
+// Multiplication is commutative, division is not.
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>
+operator*(std::chrono::duration<Rep, Period> d, NotARep) { return d; }
+
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>
+operator*(NotARep, std::chrono::duration<Rep, Period> d) { return d; }
+
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>
+operator/(std::chrono::duration<Rep, Period> d, NotARep) { return d; }
+
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>
+operator%(std::chrono::duration<Rep, Period> d, NotARep) { return d; }
+
+// op= is not commutative.
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>&
+operator*=(std::chrono::duration<Rep, Period>& d, NotARep) { return d; }
+
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>&
+operator/=(std::chrono::duration<Rep, Period>& d, NotARep) { return d; }
+
+template <class Rep, class Period>
+std::chrono::duration<Rep, Period>&
+operator%=(std::chrono::duration<Rep, Period>& d, NotARep) { return d; }
+
+#endif // REP_H
diff --git a/app/src/main/cpp/libcxx/test/std/time/seconds.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/seconds.pass.cpp
new file mode 100644
index 0000000..09affe6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/seconds.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// typedef duration<signed integral type of at least 35 bits > seconds;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::seconds D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 34, "");
+    static_assert((std::is_same<Period, std::ratio<1> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/euclidian.h b/app/src/main/cpp/libcxx/test/std/time/time.cal/euclidian.h
new file mode 100644
index 0000000..de56477
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/euclidian.h
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+//  Assumption: minValue < maxValue
+//  Assumption: minValue <= rhs <= maxValue
+//  Assumption: minValue <= lhs <= maxValue
+//  Assumption: minValue >= 0
+template <typename T, T minValue, T maxValue>
+T euclidian_addition(T rhs, T lhs)
+{
+    const T modulus = maxValue - minValue + 1;
+    T ret = rhs + lhs;
+    if (ret > maxValue)
+        ret -= modulus;
+    return ret;
+}
+
+//  Assumption: minValue < maxValue
+//  Assumption: minValue <= rhs <= maxValue
+//  Assumption: minValue <= lhs <= maxValue
+//  Assumption: minValue >= 0
+template <typename T, T minValue, T maxValue>
+T euclidian_subtraction(T lhs, T rhs)
+{
+    const T modulus = maxValue - minValue + 1;
+    T ret = lhs - rhs;
+    if (ret < minValue)
+        ret += modulus;
+    if (ret > maxValue)     // this can happen if T is unsigned
+        ret += modulus;
+    return ret;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ctor.pass.cpp
new file mode 100644
index 0000000..63a68d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+//                     day() = default;
+//  explicit constexpr day(unsigned d) noexcept;
+//  explicit constexpr operator unsigned() const noexcept;
+
+//  Effects: Constructs an object of type day by initializing d_ with d.
+//    The value held is unspecified if d is not in the range [0, 255].
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day = std::chrono::day;
+
+    ASSERT_NOEXCEPT(day{});
+    ASSERT_NOEXCEPT(day(0U));
+    ASSERT_NOEXCEPT(static_cast<unsigned>(day(0U)));
+
+    constexpr day d0{};
+    static_assert(static_cast<unsigned>(d0) == 0, "");
+
+    constexpr day d1{1};
+    static_assert(static_cast<unsigned>(d1) == 1, "");
+
+    for (unsigned i = 0; i <= 255; ++i)
+    {
+        day d(i);
+        assert(static_cast<unsigned>(d) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/decrement.pass.cpp
new file mode 100644
index 0000000..fd15b98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/decrement.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+//  constexpr day& operator--() noexcept;
+//  constexpr day operator--(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D>
+constexpr bool testConstexpr()
+{
+    D d1{10};
+    if (static_cast<unsigned>(--d1) != 9) return false;
+    if (static_cast<unsigned>(d1--) != 9) return false;
+    if (static_cast<unsigned>(d1)   != 8) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using day = std::chrono::day;
+    ASSERT_NOEXCEPT(--(std::declval<day&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<day&>())--);
+
+    ASSERT_SAME_TYPE(day , decltype(  std::declval<day&>()--));
+    ASSERT_SAME_TYPE(day&, decltype(--std::declval<day&>()  ));
+
+    static_assert(testConstexpr<day>(), "");
+
+    for (unsigned i = 10; i <= 20; ++i)
+    {
+        day d(i);
+        assert(static_cast<unsigned>(--d) == i - 1);
+        assert(static_cast<unsigned>(d--) == i - 1);
+        assert(static_cast<unsigned>(d)   == i - 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/increment.pass.cpp
new file mode 100644
index 0000000..f11021b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/increment.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+//  constexpr day& operator++() noexcept;
+//  constexpr day operator++(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D>
+constexpr bool testConstexpr()
+{
+    D d1{1};
+    if (static_cast<unsigned>(++d1) != 2) return false;
+    if (static_cast<unsigned>(d1++) != 2) return false;
+    if (static_cast<unsigned>(d1)   != 3) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using day = std::chrono::day;
+    ASSERT_NOEXCEPT(++(std::declval<day&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<day&>())++);
+
+    ASSERT_SAME_TYPE(day , decltype(  std::declval<day&>()++));
+    ASSERT_SAME_TYPE(day&, decltype(++std::declval<day&>()  ));
+
+    static_assert(testConstexpr<day>(), "");
+
+    for (unsigned i = 10; i <= 20; ++i)
+    {
+        day d(i);
+        assert(static_cast<unsigned>(++d) == i + 1);
+        assert(static_cast<unsigned>(d++) == i + 1);
+        assert(static_cast<unsigned>(d)   == i + 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ok.pass.cpp
new file mode 100644
index 0000000..b030906
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/ok.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr bool ok() const noexcept;
+//  Returns: 1 <= d_ && d_ <= 31
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day = std::chrono::day;
+    ASSERT_NOEXCEPT(                std::declval<const day>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const day>().ok()));
+
+    static_assert(!day{0}.ok(), "");
+    static_assert( day{1}.ok(), "");
+
+    assert(!day{0}.ok());
+    for (unsigned i = 1; i <= 31; ++i)
+        assert(day{i}.ok());
+    for (unsigned i = 32; i <= 255; ++i)
+        assert(!day{i}.ok());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/plus_minus_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/plus_minus_equal.pass.cpp
new file mode 100644
index 0000000..723ab2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.members/plus_minus_equal.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr day& operator+=(const days& d) noexcept;
+// constexpr day& operator-=(const days& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr()
+{
+    D d1{1};
+    if (static_cast<unsigned>(d1 += Ds{ 1}) !=  2) return false;
+    if (static_cast<unsigned>(d1 += Ds{ 2}) !=  4) return false;
+    if (static_cast<unsigned>(d1 += Ds{22}) != 26) return false;
+    if (static_cast<unsigned>(d1 -= Ds{ 1}) != 25) return false;
+    if (static_cast<unsigned>(d1 -= Ds{ 2}) != 23) return false;
+    if (static_cast<unsigned>(d1 -= Ds{22}) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using day  = std::chrono::day;
+    using days = std::chrono::days;
+
+    ASSERT_NOEXCEPT(std::declval<day&>() += std::declval<days>());
+    ASSERT_NOEXCEPT(std::declval<day&>() -= std::declval<days>());
+
+    ASSERT_SAME_TYPE(day&, decltype(std::declval<day&>() += std::declval<days>()));
+    ASSERT_SAME_TYPE(day&, decltype(std::declval<day&>() -= std::declval<days>()));
+
+    static_assert(testConstexpr<day, days>(), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        day d(i);
+        assert(static_cast<unsigned>(d += days{22}) == i + 22);
+        assert(static_cast<unsigned>(d)             == i + 22);
+        assert(static_cast<unsigned>(d -= days{12}) == i + 10);
+        assert(static_cast<unsigned>(d)             == i + 10);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..959565a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr bool operator==(const day& x, const day& y) noexcept;
+//   Returns: unsigned{x} == unsigned{y}.
+// constexpr strong_ordering operator<=>(const day& x, const day& y) noexcept;
+//   Returns: unsigned{x} <=> unsigned{y}.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+constexpr bool test() {
+  using day = std::chrono::day;
+
+  // Validate invalid values. The range [0, 255] is guaranteed to be allowed.
+  assert(testOrderValues<day>(0U, 0U));
+  assert(testOrderValues<day>(0U, 1U));
+  assert(testOrderValues<day>(254U, 255U));
+  assert(testOrderValues<day>(255U, 255U));
+
+  // Validate some valid values.
+  for (unsigned i = 1; i < 10; ++i)
+    for (unsigned j = 1; j < 10; ++j)
+      assert(testOrderValues<day>(i, j));
+
+  return true;
+}
+
+int main(int, char**) {
+  using day = std::chrono::day;
+  AssertOrderAreNoexcept<day>();
+  AssertOrderReturn<std::strong_ordering, day>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.fail.cpp
new file mode 100644
index 0000000..d7fe94a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr day operator""d(unsigned long long d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day = std::chrono::day;
+    day d1 = 4d; // expected-error-re {{no matching literal operator for call to 'operator""d' {{.*}}}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
new file mode 100644
index 0000000..3e753d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr day operator""d(unsigned long long d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    using namespace std::chrono;
+    ASSERT_NOEXCEPT(               4d);
+    ASSERT_SAME_TYPE(day, decltype(4d));
+
+    static_assert( 7d == day(7), "");
+    day d1 = 4d;
+    assert (d1 == day(4));
+    }
+
+    {
+    using namespace std::literals;
+    ASSERT_NOEXCEPT(                            4d);
+    ASSERT_SAME_TYPE(std::chrono::day, decltype(4d));
+
+    static_assert( 7d == std::chrono::day(7), "");
+
+    std::chrono::day d1 = 4d;
+    assert (d1 == std::chrono::day(4));
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..34b59f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/minus.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr day operator-(const day& x, const days& y) noexcept;
+//   Returns: x + -y.
+//
+// constexpr days operator-(const day& x, const day& y) noexcept;
+//   Returns: days{int(unsigned{x}) - int(unsigned{y}).
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr()
+{
+    D d{23};
+    Ds offset{6};
+    if (d - offset != D{17}) return false;
+    if (d - D{17} != offset) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using day  = std::chrono::day;
+    using days = std::chrono::days;
+
+    ASSERT_NOEXCEPT(std::declval<day>() - std::declval<days>());
+    ASSERT_NOEXCEPT(std::declval<day>() - std::declval<day>());
+
+    ASSERT_SAME_TYPE(day,  decltype(std::declval<day>() - std::declval<days>()));
+    ASSERT_SAME_TYPE(days, decltype(std::declval<day>() - std::declval<day>()));
+
+    static_assert(testConstexpr<day, days>(), "");
+
+    day dy{12};
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        day d1   = dy - days{i};
+        days off = dy - day {i};
+        assert(static_cast<unsigned>(d1) == 12 - i);
+        assert(off.count() == static_cast<int>(12 - i)); // days is signed
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..0e17304
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/ostream.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED msvc, target={{.+}}-windows-gnu
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+// class day;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const day& d);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::day day) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << day;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::day day) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << day;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::day day) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << day;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  using namespace std::literals::chrono_literals;
+
+  assert(stream_c_locale<CharT>(0d) == SV("00 is not a valid day"));
+  assert(stream_c_locale<CharT>(1d) == SV("01"));
+  assert(stream_c_locale<CharT>(31d) == SV("31"));
+  assert(stream_c_locale<CharT>(255d) == SV("255 is not a valid day"));
+
+  assert(stream_fr_FR_locale<CharT>(0d) == SV("00 is not a valid day"));
+  assert(stream_fr_FR_locale<CharT>(1d) == SV("01"));
+  assert(stream_fr_FR_locale<CharT>(31d) == SV("31"));
+  assert(stream_fr_FR_locale<CharT>(255d) == SV("255 is not a valid day"));
+
+  assert(stream_ja_JP_locale<CharT>(0d) == SV("00 is not a valid day"));
+  assert(stream_ja_JP_locale<CharT>(1d) == SV("01"));
+  assert(stream_ja_JP_locale<CharT>(31d) == SV("31"));
+  assert(stream_ja_JP_locale<CharT>(255d) == SV("255 is not a valid day"));
+}
+
+int main(int, char**) {
+  using namespace std::literals::chrono_literals;
+
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..fedf9ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/time.cal.day.nonmembers/plus.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+// constexpr day operator+(const day& x, const days& y) noexcept;
+//   Returns: day(unsigned{x} + y.count()).
+//
+// constexpr day operator+(const days& x, const day& y) noexcept;
+//   Returns: y + x.
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr()
+{
+    D d{1};
+    Ds offset{23};
+    if (d + offset != D{24}) return false;
+    if (offset + d != D{24}) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using day  = std::chrono::day;
+    using days = std::chrono::days;
+
+    ASSERT_NOEXCEPT(std::declval<day>() + std::declval<days>());
+    ASSERT_NOEXCEPT(std::declval<days>() + std::declval<day>());
+
+    ASSERT_SAME_TYPE(day, decltype(std::declval<day>() + std::declval<days>()));
+    ASSERT_SAME_TYPE(day, decltype(std::declval<days>() + std::declval<day>()));
+
+    static_assert(testConstexpr<day, days>(), "");
+
+    day dy{12};
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        day d1 = dy + days{i};
+        day d2 = days{i} + dy;
+        assert(d1 == d2);
+        assert(static_cast<unsigned>(d1) == i + 12);
+        assert(static_cast<unsigned>(d2) == i + 12);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/types.pass.cpp
new file mode 100644
index 0000000..d67dcf9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.day/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class day;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day = std::chrono::day;
+
+    static_assert(std::is_trivially_copyable_v<day>, "");
+    static_assert(std::is_standard_layout_v<day>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.last/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.last/types.pass.cpp
new file mode 100644
index 0000000..6ecc2b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.last/types.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// struct last_spec {
+//   explicit last_spec() = default;
+// };
+//
+// inline constexpr last_spec last{};
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using last_spec = std::chrono::last_spec;
+
+    ASSERT_SAME_TYPE(const last_spec, decltype(std::chrono::last));
+
+    static_assert(std::is_trivially_copyable_v<last_spec>, "");
+    static_assert(std::is_standard_layout_v<last_spec>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/ctor.pass.cpp
new file mode 100644
index 0000000..37cca3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/ctor.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+//                     month_day() = default;
+//  constexpr month_day(const chrono::month& m, const chrono::day& d) noexcept;
+//
+//  Effects:  Constructs an object of type month_day by initializing m_ with m, and d_ with d.
+//
+//  constexpr chrono::month month() const noexcept;
+//  constexpr chrono::day     day() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day       = std::chrono::day;
+    using month     = std::chrono::month;
+    using month_day = std::chrono::month_day;
+
+    ASSERT_NOEXCEPT(month_day{});
+    ASSERT_NOEXCEPT(month_day{month{1}, day{1}});
+
+    constexpr month_day md0{};
+    static_assert( md0.month() == month{}, "");
+    static_assert( md0.day()   == day{},   "");
+    static_assert(!md0.ok(),               "");
+
+    constexpr month_day md1{std::chrono::January, day{4}};
+    static_assert( md1.month() == std::chrono::January, "");
+    static_assert( md1.day()   == day{4},               "");
+    static_assert( md1.ok(),                            "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/day.pass.cpp
new file mode 100644
index 0000000..e73d7b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/day.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: d_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day       = std::chrono::day;
+    using month_day = std::chrono::month_day;
+
+    ASSERT_NOEXCEPT(               std::declval<const month_day>().day());
+    ASSERT_SAME_TYPE(day, decltype(std::declval<const month_day>().day()));
+
+    static_assert( month_day{}.day() == day{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        month_day md(std::chrono::March, day{i});
+        assert( static_cast<unsigned>(md.day()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/month.pass.cpp
new file mode 100644
index 0000000..4e39b2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/month.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day       = std::chrono::day;
+    using month     = std::chrono::month;
+    using month_day = std::chrono::month_day;
+
+    ASSERT_NOEXCEPT(                 std::declval<const month_day>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const month_day>().month()));
+
+    static_assert( month_day{}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        month_day md(month{i}, day{1});
+        assert( static_cast<unsigned>(md.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/ok.pass.cpp
new file mode 100644
index 0000000..2bc7a5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.members/ok.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+// constexpr bool ok() const noexcept;
+//  Returns: true if m_.ok() is true, 1d <= d_, and d_ is less than or equal to the
+//    number of days in month m_; otherwise returns false.
+//  When m_ == February, the number of days is considered to be 29.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day       = std::chrono::day;
+    using month     = std::chrono::month;
+    using month_day = std::chrono::month_day;
+
+    ASSERT_NOEXCEPT(                std::declval<const month_day>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_day>().ok()));
+
+    static_assert(!month_day{}.ok(),                         "");
+    static_assert( month_day{std::chrono::May, day{2}}.ok(), "");
+
+    assert(!(month_day(std::chrono::April, day{0}).ok()));
+
+    assert( (month_day{std::chrono::March, day{1}}.ok()));
+    for (unsigned i = 1; i <= 12; ++i)
+    {
+        const bool is31 = i == 1 || i == 3 || i == 5 || i == 7 || i == 8 || i == 10 || i == 12;
+        assert(!(month_day{month{i}, day{ 0}}.ok()));
+        assert( (month_day{month{i}, day{ 1}}.ok()));
+        assert( (month_day{month{i}, day{10}}.ok()));
+        assert( (month_day{month{i}, day{29}}.ok()));
+        assert( (month_day{month{i}, day{30}}.ok()) == (i != 2));
+        assert( (month_day{month{i}, day{31}}.ok()) == is31);
+        assert(!(month_day{month{i}, day{32}}.ok()));
+    }
+
+    //  If the month is not ok, all the days are bad
+    for (unsigned i = 1; i <= 35; ++i)
+        assert(!(month_day{month{13}, day{i}}.ok()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..1fc7959
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+// constexpr bool operator==(const month_day& x, const month_day& y) noexcept;
+// constexpr strong_comparison operator<=>(const month_day& x, const month_day& y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+constexpr bool test() {
+  using day       = std::chrono::day;
+  using month     = std::chrono::month;
+  using month_day = std::chrono::month_day;
+
+  assert(testOrder(
+      month_day{std::chrono::January, day{1}}, month_day{std::chrono::January, day{1}}, std::strong_ordering::equal));
+
+  assert(testOrder(
+      month_day{std::chrono::January, day{1}}, month_day{std::chrono::January, day{2}}, std::strong_ordering::less));
+
+  assert(testOrder(
+      month_day{std::chrono::January, day{1}}, month_day{std::chrono::February, day{1}}, std::strong_ordering::less));
+
+  //  same day, different months
+  for (unsigned i = 1; i < 12; ++i)
+    for (unsigned j = 1; j < 12; ++j)
+      assert((testOrder(
+          month_day{month{i}, day{1}},
+          month_day{month{j}, day{1}},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  //  same month, different days
+  for (unsigned i = 1; i < 31; ++i)
+    for (unsigned j = 1; j < 31; ++j)
+      assert((testOrder(
+          month_day{month{2}, day{i}},
+          month_day{month{2}, day{j}},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  return true;
+}
+
+int main(int, char**) {
+  using month_day = std::chrono::month_day;
+  AssertOrderAreNoexcept<month_day>();
+  AssertOrderReturn<std::strong_ordering, month_day>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..4e4feda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/time.cal.md.nonmembers/ostream.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+// class month_day;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const month_day& md);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::month_day md) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << md;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::month_day md) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << md;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::month_day md) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << md;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  using namespace std::literals::chrono_literals;
+
+  assert(stream_c_locale<CharT>(std::chrono::month_day{std::chrono::month{0}, 0d}) ==
+         SV("0 is not a valid month/00 is not a valid day"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day{std::chrono::month{0}, 1d}) == SV("0 is not a valid month/01"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 255d}) ==
+         SV("Jan/255 is not a valid day"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 31d}) == SV("Jan/31"));
+  // February is considered valid with 29 days; it lacks the year information
+  // to do a proper validation.
+  assert(stream_c_locale<CharT>(std::chrono::month_day{std::chrono::month{2}, 29d}) == SV("Feb/29"));
+  // The month_day stream operator has no validation, this means never validate
+  // dates don't get
+  //   Jun/31 is not a valid month day
+  // which is inconsistent with other stream operators.
+  // TODO FMT file an issue about this.
+  assert(stream_c_locale<CharT>(std::chrono::month_day{std::chrono::month{6}, 31d}) == SV("Jun/31"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{0}, 0d}) ==
+         SV("0 is not a valid month/00 is not a valid day"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{0}, 1d}) ==
+         SV("0 is not a valid month/01"));
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 255d}) ==
+         SV("jan/255 is not a valid day"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 31d}) == SV("jan/31"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{2}, 29d}) == SV("fév/29"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{6}, 31d}) == SV("jui/31"));
+#else  //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 255d}) ==
+         SV("janv./255 is not a valid day"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 31d}) == SV("janv./31"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{2}, 29d}) == SV("févr./29"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day{std::chrono::month{6}, 31d}) == SV("juin/31"));
+#endif //  defined(__APPLE__)
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{0}, 0d}) ==
+         SV("0 is not a valid month/00 is not a valid day"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{0}, 1d}) ==
+         SV("0 is not a valid month/01"));
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 255d}) ==
+         SV(" 1/255 is not a valid day"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 31d}) == SV(" 1/31"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{2}, 29d}) == SV(" 2/29"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{6}, 31d}) == SV(" 6/31"));
+#elif defined(_AIX) || defined(_WIN32) //  defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 255d}) ==
+         SV("1月/255 is not a valid day"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 31d}) == SV("1月/31"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{2}, 29d}) == SV("2月/29"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{6}, 31d}) == SV("6月/31"));
+#else                                  //  defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 255d}) ==
+         SV(" 1月/255 is not a valid day"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{1}, 31d}) == SV(" 1月/31"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{2}, 29d}) == SV(" 2月/29"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day{std::chrono::month{6}, 31d}) == SV(" 6月/31"));
+#endif                                 //  defined(__APPLE__)
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/types.pass.cpp
new file mode 100644
index 0000000..f8838fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.md/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_day = std::chrono::month_day;
+
+    static_assert(std::is_trivially_copyable_v<month_day>, "");
+    static_assert(std::is_standard_layout_v<month_day>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/comparisons.pass.cpp
new file mode 100644
index 0000000..803d202
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/comparisons.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day_last;
+
+// constexpr bool operator==(const month_day& x, const month_day& y) noexcept;
+//   Returns: x.month() == y.month()
+//
+// constexpr bool operator< (const month_day& x, const month_day& y) noexcept;
+//   Returns: x.month() < y.month()
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using month          = std::chrono::month;
+    using month_day_last = std::chrono::month_day_last;
+
+    AssertComparisonsAreNoexcept<month_day_last>();
+    AssertComparisonsReturnBool<month_day_last>();
+
+    static_assert( testComparisonsValues<month_day_last>(month{1}, month{1}), "");
+    static_assert( testComparisonsValues<month_day_last>(month{1}, month{2}), "");
+
+    // same day, different months
+    for (unsigned i = 1; i <= 12; ++i)
+        for (unsigned j = 1; j <= 12; ++j)
+            assert(testComparisonsValues<month_day_last>(month{i}, month{j}));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ctor.pass.cpp
new file mode 100644
index 0000000..880994a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ctor.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day_last;
+
+//  constexpr month_day_last(const chrono::month& m) noexcept;
+//
+//  Effects:  Constructs an object of type month_day_last by initializing m_ with m
+//
+//  constexpr chrono::month month() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month     = std::chrono::month;
+    using month_day_last = std::chrono::month_day_last;
+
+    ASSERT_NOEXCEPT(month_day_last{month{1}});
+
+    constexpr month_day_last md0{month{}};
+    static_assert( md0.month() == month{}, "");
+    static_assert(!md0.ok(),               "");
+
+    constexpr month_day_last md1{std::chrono::January};
+    static_assert( md1.month() == std::chrono::January, "");
+    static_assert( md1.ok(),                            "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/month.pass.cpp
new file mode 100644
index 0000000..2e95a0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/month.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day_last;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: m_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month     = std::chrono::month;
+    using month_day_last = std::chrono::month_day_last;
+
+    ASSERT_NOEXCEPT(                 std::declval<const month_day_last>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const month_day_last>().month()));
+
+    static_assert( month_day_last{month{}}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        month_day_last mdl(month{i});
+        assert( static_cast<unsigned>(mdl.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ok.pass.cpp
new file mode 100644
index 0000000..c6bec5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ok.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day_last;
+
+// constexpr bool ok() const noexcept;
+//  Returns: m_.ok()
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month          = std::chrono::month;
+    using month_day_last = std::chrono::month_day_last;
+
+    ASSERT_NOEXCEPT(                std::declval<const month_day_last>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_day_last>().ok()));
+
+    static_assert(!month_day_last{month{}}.ok(),          "");
+    static_assert( month_day_last{std::chrono::May}.ok(), "");
+
+    for (unsigned i = 1; i <= 12; ++i)
+    {
+        month_day_last mdl{month{i}};
+        assert( mdl.ok());
+    }
+
+    //  If the month is not ok, all the days are bad
+    for (unsigned i = 13; i <= 50; ++i)
+    {
+        month_day_last mdl{month{i}};
+        assert(!mdl.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ostream.pass.cpp
new file mode 100644
index 0000000..491d30b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/ostream.pass.cpp
@@ -0,0 +1,181 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class month_day_last;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const month_day_last& mdl);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::month_day_last mdl) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << mdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::month_day_last mdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << mdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::month_day_last mdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << mdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{0}}) ==
+         SV("0 is not a valid month/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{1}}) == SV("Jan/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{2}}) == SV("Feb/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{3}}) == SV("Mar/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV("Apr/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{5}}) == SV("May/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{6}}) == SV("Jun/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{7}}) == SV("Jul/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{8}}) == SV("Aug/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{9}}) == SV("Sep/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{10}}) == SV("Oct/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{11}}) == SV("Nov/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{12}}) == SV("Dec/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{13}}) ==
+         SV("13 is not a valid month/last"));
+  assert(stream_c_locale<CharT>(std::chrono::month_day_last{std::chrono::month{255}}) ==
+         SV("255 is not a valid month/last"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{0}}) ==
+         SV("0 is not a valid month/last"));
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{1}}) == SV("jan/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{2}}) == SV("fév/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{3}}) == SV("mar/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV("avr/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{5}}) == SV("mai/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{6}}) == SV("jui/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{7}}) == SV("jul/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{8}}) == SV("aoû/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{9}}) == SV("sep/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{10}}) == SV("oct/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{11}}) == SV("nov/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{12}}) == SV("déc/last"));
+#else //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{1}}) == SV("janv./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{2}}) == SV("févr./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{3}}) == SV("mars/last"));
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV("avr./last"));
+#  else
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV("avril/last"));
+#  endif
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{5}}) == SV("mai/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{6}}) == SV("juin/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{7}}) == SV("juil./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{8}}) == SV("août/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{9}}) == SV("sept./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{10}}) == SV("oct./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{11}}) == SV("nov./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{12}}) == SV("déc./last"));
+#endif //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{13}}) ==
+         SV("13 is not a valid month/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_day_last{std::chrono::month{255}}) ==
+         SV("255 is not a valid month/last"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{0}}) ==
+         SV("0 is not a valid month/last"));
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{1}}) == SV(" 1/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{2}}) == SV(" 2/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{3}}) == SV(" 3/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV(" 4/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{5}}) == SV(" 5/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{6}}) == SV(" 6/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{7}}) == SV(" 7/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{8}}) == SV(" 8/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{9}}) == SV(" 9/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{10}}) == SV("10/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{11}}) == SV("11/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{12}}) == SV("12/last"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{1}}) == SV("1月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{2}}) == SV("2月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{3}}) == SV("3月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV("4月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{5}}) == SV("5月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{6}}) == SV("6月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{7}}) == SV("7月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{8}}) == SV("8月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{9}}) == SV("9月/last"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{1}}) == SV(" 1月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{2}}) == SV(" 2月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{3}}) == SV(" 3月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{4}}) == SV(" 4月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{5}}) == SV(" 5月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{6}}) == SV(" 6月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{7}}) == SV(" 7月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{8}}) == SV(" 8月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{9}}) == SV(" 9月/last"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{10}}) == SV("10月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{11}}) == SV("11月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{12}}) == SV("12月/last"));
+#endif   // defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{13}}) ==
+         SV("13 is not a valid month/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_day_last{std::chrono::month{255}}) ==
+         SV("255 is not a valid month/last"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/types.pass.cpp
new file mode 100644
index 0000000..5f7c78d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mdlast/types.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// class month_day_last;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_day_last = std::chrono::month_day_last;
+
+    static_assert(std::is_trivially_copyable_v<month_day_last>, "");
+    static_assert(std::is_standard_layout_v<month_day_last>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ctor.pass.cpp
new file mode 100644
index 0000000..fff75a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+//                     month() = default;
+//  explicit constexpr month(int m) noexcept;
+//  explicit constexpr operator int() const noexcept;
+
+//  Effects: Constructs an object of type month by initializing m_ with m.
+//    The value held is unspecified if d is not in the range [0, 255].
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month = std::chrono::month;
+
+    ASSERT_NOEXCEPT(month{});
+    ASSERT_NOEXCEPT(month(1));
+    ASSERT_NOEXCEPT(static_cast<unsigned>(month(1)));
+
+    constexpr month m0{};
+    static_assert(static_cast<unsigned>(m0) == 0, "");
+
+    constexpr month m1{1};
+    static_assert(static_cast<unsigned>(m1) == 1, "");
+
+    for (unsigned i = 0; i <= 255; ++i)
+    {
+        month m(i);
+        assert(static_cast<unsigned>(m) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/decrement.pass.cpp
new file mode 100644
index 0000000..5671122
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/decrement.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+//  constexpr month& operator--() noexcept;
+//  constexpr month operator--(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename M>
+constexpr bool testConstexpr()
+{
+    M m1{10};
+    if (static_cast<unsigned>(--m1) != 9) return false;
+    if (static_cast<unsigned>(m1--) != 9) return false;
+    if (static_cast<unsigned>(m1)   != 8) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using month = std::chrono::month;
+
+    ASSERT_NOEXCEPT(--(std::declval<month&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<month&>())--);
+
+    ASSERT_SAME_TYPE(month , decltype(  std::declval<month&>()--));
+    ASSERT_SAME_TYPE(month&, decltype(--std::declval<month&>()  ));
+
+    static_assert(testConstexpr<month>(), "");
+
+    for (unsigned i = 10; i <= 20; ++i)
+    {
+        month m(i);
+        assert(static_cast<unsigned>(--m) == i - 1);
+        assert(static_cast<unsigned>(m--) == i - 1);
+        assert(static_cast<unsigned>(m)   == i - 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/increment.pass.cpp
new file mode 100644
index 0000000..af61d34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/increment.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+//  constexpr month& operator++() noexcept;
+//  constexpr month operator++(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename M>
+constexpr bool testConstexpr()
+{
+    M m1{1};
+    if (static_cast<unsigned>(++m1) != 2) return false;
+    if (static_cast<unsigned>(m1++) != 2) return false;
+    if (static_cast<unsigned>(m1)   != 3) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using month = std::chrono::month;
+    ASSERT_NOEXCEPT(++(std::declval<month&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<month&>())++);
+
+    ASSERT_SAME_TYPE(month , decltype(  std::declval<month&>()++));
+    ASSERT_SAME_TYPE(month&, decltype(++std::declval<month&>()  ));
+
+    static_assert(testConstexpr<month>(), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        month m(i);
+        assert(static_cast<unsigned>(++m) == i + 1);
+        assert(static_cast<unsigned>(m++) == i + 1);
+        assert(static_cast<unsigned>(m)   == i + 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ok.pass.cpp
new file mode 100644
index 0000000..988051d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/ok.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+// constexpr bool ok() const noexcept;
+//  Returns: 1 <= d_ && d_ <= 12
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month = std::chrono::month;
+
+    ASSERT_NOEXCEPT(                std::declval<const month>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const month>().ok()));
+
+    static_assert(!month{0}.ok(), "");
+    static_assert( month{1}.ok(), "");
+
+    assert(!month{0}.ok());
+    for (unsigned i = 1; i <= 12; ++i)
+        assert(month{i}.ok());
+    for (unsigned i = 13; i <= 255; ++i)
+        assert(!month{i}.ok());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/plus_minus_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/plus_minus_equal.pass.cpp
new file mode 100644
index 0000000..848a96a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.members/plus_minus_equal.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+// constexpr month& operator+=(const month& d) noexcept;
+// constexpr month& operator-=(const month& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename M, typename Ms>
+constexpr bool testConstexpr()
+{
+    M m1{1};
+    if (static_cast<unsigned>(m1 += Ms{ 1}) !=  2) return false;
+    if (static_cast<unsigned>(m1 += Ms{ 2}) !=  4) return false;
+    if (static_cast<unsigned>(m1 += Ms{ 8}) != 12) return false;
+    if (static_cast<unsigned>(m1 -= Ms{ 1}) != 11) return false;
+    if (static_cast<unsigned>(m1 -= Ms{ 2}) !=  9) return false;
+    if (static_cast<unsigned>(m1 -= Ms{ 8}) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using month  = std::chrono::month;
+    using months = std::chrono::months;
+
+    ASSERT_NOEXCEPT(std::declval<month&>() += std::declval<months&>());
+    ASSERT_NOEXCEPT(std::declval<month&>() -= std::declval<months&>());
+    ASSERT_SAME_TYPE(month&, decltype(std::declval<month&>() += std::declval<months&>()));
+    ASSERT_SAME_TYPE(month&, decltype(std::declval<month&>() -= std::declval<months&>()));
+
+    static_assert(testConstexpr<month, months>(), "");
+
+    for (unsigned i = 1; i <= 10; ++i)
+    {
+        month m(i);
+        int exp = i + 10;
+        while (exp > 12)
+            exp -= 12;
+        assert(static_cast<unsigned>(m += months{10}) == static_cast<unsigned>(exp));
+        assert(static_cast<unsigned>(m)               == static_cast<unsigned>(exp));
+    }
+
+    for (unsigned i = 1; i <= 10; ++i)
+    {
+        month m(i);
+        int exp = i - 9;
+        while (exp < 1)
+            exp += 12;
+        assert(static_cast<unsigned>(m -= months{ 9}) == static_cast<unsigned>(exp));
+        assert(static_cast<unsigned>(m)               == static_cast<unsigned>(exp));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..5957008
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+// constexpr bool operator==(const month& x, const month& y) noexcept;
+// constexpr strong_ordering operator<=>(const month& x, const month& y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+constexpr bool test() {
+  using month = std::chrono::month;
+
+  // Validate invalid values. The range [0, 255] is guaranteed to be allowed.
+  assert(testOrderValues<month>(0U, 0U));
+  assert(testOrderValues<month>(0U, 1U));
+  assert(testOrderValues<month>(254U, 255U));
+  assert(testOrderValues<month>(255U, 255U));
+
+  // Validate some valid values.
+  for (unsigned i = 1; i <= 12; ++i)
+    for (unsigned j = 1; j <= 12; ++j)
+      assert(testOrderValues<month>(i, j));
+
+  return true;
+}
+
+int main(int, char**) {
+  using month = std::chrono::month;
+  AssertOrderAreNoexcept<month>();
+  AssertOrderReturn<std::strong_ordering, month>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/literals.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/literals.pass.cpp
new file mode 100644
index 0000000..a594789
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/literals.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// inline constexpr month January{1};
+// inline constexpr month February{2};
+// inline constexpr month March{3};
+// inline constexpr month April{4};
+// inline constexpr month May{5};
+// inline constexpr month June{6};
+// inline constexpr month July{7};
+// inline constexpr month August{8};
+// inline constexpr month September{9};
+// inline constexpr month October{10};
+// inline constexpr month November{11};
+// inline constexpr month December{12};
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::January));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::February));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::March));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::April));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::May));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::June));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::July));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::August));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::September));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::October));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::November));
+    ASSERT_SAME_TYPE(const std::chrono::month, decltype(std::chrono::December));
+
+    static_assert( std::chrono::January   == std::chrono::month(1),  "");
+    static_assert( std::chrono::February  == std::chrono::month(2),  "");
+    static_assert( std::chrono::March     == std::chrono::month(3),  "");
+    static_assert( std::chrono::April     == std::chrono::month(4),  "");
+    static_assert( std::chrono::May       == std::chrono::month(5),  "");
+    static_assert( std::chrono::June      == std::chrono::month(6),  "");
+    static_assert( std::chrono::July      == std::chrono::month(7),  "");
+    static_assert( std::chrono::August    == std::chrono::month(8),  "");
+    static_assert( std::chrono::September == std::chrono::month(9),  "");
+    static_assert( std::chrono::October   == std::chrono::month(10), "");
+    static_assert( std::chrono::November  == std::chrono::month(11), "");
+    static_assert( std::chrono::December  == std::chrono::month(12), "");
+
+    assert(std::chrono::January   == std::chrono::month(1));
+    assert(std::chrono::February  == std::chrono::month(2));
+    assert(std::chrono::March     == std::chrono::month(3));
+    assert(std::chrono::April     == std::chrono::month(4));
+    assert(std::chrono::May       == std::chrono::month(5));
+    assert(std::chrono::June      == std::chrono::month(6));
+    assert(std::chrono::July      == std::chrono::month(7));
+    assert(std::chrono::August    == std::chrono::month(8));
+    assert(std::chrono::September == std::chrono::month(9));
+    assert(std::chrono::October   == std::chrono::month(10));
+    assert(std::chrono::November  == std::chrono::month(11));
+    assert(std::chrono::December  == std::chrono::month(12));
+
+    assert(static_cast<unsigned>(std::chrono::January)   ==  1);
+    assert(static_cast<unsigned>(std::chrono::February)  ==  2);
+    assert(static_cast<unsigned>(std::chrono::March)     ==  3);
+    assert(static_cast<unsigned>(std::chrono::April)     ==  4);
+    assert(static_cast<unsigned>(std::chrono::May)       ==  5);
+    assert(static_cast<unsigned>(std::chrono::June)      ==  6);
+    assert(static_cast<unsigned>(std::chrono::July)      ==  7);
+    assert(static_cast<unsigned>(std::chrono::August)    ==  8);
+    assert(static_cast<unsigned>(std::chrono::September) ==  9);
+    assert(static_cast<unsigned>(std::chrono::October)   == 10);
+    assert(static_cast<unsigned>(std::chrono::November)  == 11);
+    assert(static_cast<unsigned>(std::chrono::December)  == 12);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..f9ef5b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/minus.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+// constexpr month operator-(const month& x, const months& y) noexcept;
+//   Returns: x + -y.
+//
+// constexpr months operator-(const month& x, const month& y) noexcept;
+//   Returns: If x.ok() == true and y.ok() == true, returns a value m in the range
+//   [months{0}, months{11}] satisfying y + m == x.
+//   Otherwise the value returned is unspecified.
+//   [Example: January - February == months{11}. -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename M, typename Ms>
+constexpr bool testConstexpr()
+{
+    {
+    M m{5};
+    Ms offset{3};
+    assert(m - offset == M{2});
+    assert(m - M{2} == offset);
+    }
+
+    //  Check the example
+    assert(M{1} - M{2} == Ms{11});
+
+    return true;
+}
+
+int main(int, char**)
+{
+    using month  = std::chrono::month;
+    using months = std::chrono::months;
+
+    ASSERT_NOEXCEPT(std::declval<month>() - std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<month>() - std::declval<month>());
+
+    ASSERT_SAME_TYPE(month , decltype(std::declval<month>() - std::declval<months>()));
+    ASSERT_SAME_TYPE(months, decltype(std::declval<month>() - std::declval<month> ()));
+
+    static_assert(testConstexpr<month, months>(), "");
+
+    month m{6};
+    for (unsigned i = 1; i <= 12; ++i)
+    {
+        month m1   = m - months{i};
+        // months off = m - month {i};
+        int exp = 6 - i;
+        if (exp < 1)
+            exp += 12;
+        assert(static_cast<unsigned>(m1) == static_cast<unsigned>(exp));
+        // assert(off.count()            == static_cast<unsigned>(exp));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..2efc023
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/ostream.pass.cpp
@@ -0,0 +1,169 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class month;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const month& month);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::month month) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << month;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::month month) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << month;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::month month) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << month;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::month{0}) == SV("0 is not a valid month"));
+  assert(stream_c_locale<CharT>(std::chrono::month{1}) == SV("Jan"));
+  assert(stream_c_locale<CharT>(std::chrono::month{2}) == SV("Feb"));
+  assert(stream_c_locale<CharT>(std::chrono::month{3}) == SV("Mar"));
+  assert(stream_c_locale<CharT>(std::chrono::month{4}) == SV("Apr"));
+  assert(stream_c_locale<CharT>(std::chrono::month{5}) == SV("May"));
+  assert(stream_c_locale<CharT>(std::chrono::month{6}) == SV("Jun"));
+  assert(stream_c_locale<CharT>(std::chrono::month{7}) == SV("Jul"));
+  assert(stream_c_locale<CharT>(std::chrono::month{8}) == SV("Aug"));
+  assert(stream_c_locale<CharT>(std::chrono::month{9}) == SV("Sep"));
+  assert(stream_c_locale<CharT>(std::chrono::month{10}) == SV("Oct"));
+  assert(stream_c_locale<CharT>(std::chrono::month{11}) == SV("Nov"));
+  assert(stream_c_locale<CharT>(std::chrono::month{12}) == SV("Dec"));
+  assert(stream_c_locale<CharT>(std::chrono::month{13}) == SV("13 is not a valid month"));
+  assert(stream_c_locale<CharT>(std::chrono::month{255}) == SV("255 is not a valid month"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{0}) == SV("0 is not a valid month"));
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{1}) == SV("jan"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{2}) == SV("fév"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{3}) == SV("mar"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{4}) == SV("avr"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{5}) == SV("mai"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{6}) == SV("jui"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{7}) == SV("jul"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{8}) == SV("aoû"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{9}) == SV("sep"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{10}) == SV("oct"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{11}) == SV("nov"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{12}) == SV("déc"));
+#else //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{1}) == SV("janv."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{2}) == SV("févr."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{3}) == SV("mars"));
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{4}) == SV("avr."));
+#  else
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{4}) == SV("avril"));
+#  endif
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{5}) == SV("mai"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{6}) == SV("juin"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{7}) == SV("juil."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{8}) == SV("août"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{9}) == SV("sept."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{10}) == SV("oct."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{11}) == SV("nov."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{12}) == SV("déc."));
+#endif //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{13}) == SV("13 is not a valid month"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month{255}) == SV("255 is not a valid month"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{0}) == SV("0 is not a valid month"));
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{1}) == SV(" 1"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{2}) == SV(" 2"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{3}) == SV(" 3"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{4}) == SV(" 4"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{5}) == SV(" 5"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{6}) == SV(" 6"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{7}) == SV(" 7"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{8}) == SV(" 8"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{9}) == SV(" 9"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{10}) == SV("10"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{11}) == SV("11"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{12}) == SV("12"));
+#else // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{1}) == SV("1月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{2}) == SV("2月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{3}) == SV("3月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{4}) == SV("4月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{5}) == SV("5月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{6}) == SV("6月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{7}) == SV("7月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{8}) == SV("8月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{9}) == SV("9月"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{1}) == SV(" 1月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{2}) == SV(" 2月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{3}) == SV(" 3月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{4}) == SV(" 4月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{5}) == SV(" 5月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{6}) == SV(" 6月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{7}) == SV(" 7月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{8}) == SV(" 8月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{9}) == SV(" 9月"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{10}) == SV("10月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{11}) == SV("11月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{12}) == SV("12月"));
+#endif   // defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{13}) == SV("13 is not a valid month"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month{255}) == SV("255 is not a valid month"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..297df13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/time.cal.month.nonmembers/plus.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+// constexpr month operator+(const month& x, const months& y) noexcept;
+//   Returns: month(int{x} + y.count()).
+//
+// constexpr month operator+(const months& x, const month& y) noexcept;
+//   Returns:
+//     month{modulo(static_cast<long long>(int{x}) + (y.count() - 1), 12) + 1}
+//   where modulo(n, 12) computes the remainder of n divided by 12 using Euclidean division.
+//   [Note: Given a divisor of 12, Euclidean division truncates towards negative infinity
+//   and always produces a remainder in the range of [0, 11].
+//   Assuming no overflow in the signed summation, this operation results in a month
+//   holding a value in the range [1, 12] even if !x.ok(). -end note]
+//   [Example: February + months{11} == January. -end example]
+
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename M, typename Ms>
+constexpr bool testConstexpr()
+{
+    M m{1};
+    Ms offset{4};
+    assert(m + offset == M{5});
+    assert(offset + m == M{5});
+    //  Check the example
+    assert(M{2} + Ms{11} == M{1});
+    return true;
+}
+
+int main(int, char**)
+{
+    using month  = std::chrono::month;
+    using months = std::chrono::months;
+
+    ASSERT_NOEXCEPT(std::declval<month>() + std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<months>() + std::declval<month>());
+
+    ASSERT_SAME_TYPE(month, decltype(std::declval<month>()  + std::declval<months>()));
+    ASSERT_SAME_TYPE(month, decltype(std::declval<months>() + std::declval<month>() ));
+
+    static_assert(testConstexpr<month, months>(), "");
+
+    month my{2};
+    for (unsigned i = 0; i <= 15; ++i)
+    {
+        month m1 = my + months{i};
+        month m2 = months{i} + my;
+        assert(m1 == m2);
+        unsigned exp = i + 2;
+        while (exp > 12)
+            exp -= 12;
+        assert(static_cast<unsigned>(m1) == exp);
+        assert(static_cast<unsigned>(m2) == exp);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/types.pass.cpp
new file mode 100644
index 0000000..d3b0b41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.month/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month = std::chrono::month;
+
+    static_assert(std::is_trivially_copyable_v<month>, "");
+    static_assert(std::is_standard_layout_v<month>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/ctor.pass.cpp
new file mode 100644
index 0000000..c55f4c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+//   month_weekday represents the nth weekday of a month, of an as yet unspecified year.
+
+//  constexpr month_weekday(const chrono::month& m, const chrono::weekday_indexed& wdi) noexcept;
+//    Effects:  Constructs an object of type month_weekday by initializing m_ with m, and wdi_ with wdi.
+//
+//  constexpr chrono::month                     month() const noexcept;
+//  constexpr chrono::weekday_indexed weekday_indexed() const noexcept;
+//  constexpr bool                                 ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday   = std::chrono::month_weekday;
+    using month           = std::chrono::month;
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    ASSERT_NOEXCEPT(month_weekday{month{1}, weekday_indexed{weekday{}, 1}});
+
+    constexpr month_weekday md0{month{}, weekday_indexed{}};
+    static_assert( md0.month()           == month{},           "");
+    static_assert( md0.weekday_indexed() == weekday_indexed{}, "");
+    static_assert(!md0.ok(),                                   "");
+
+    constexpr month_weekday md1{std::chrono::January, weekday_indexed{std::chrono::Friday, 4}};
+    static_assert( md1.month() == std::chrono::January,                              "");
+    static_assert( md1.weekday_indexed() == weekday_indexed{std::chrono::Friday, 4}, "");
+    static_assert( md1.ok(),                                                         "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/month.pass.cpp
new file mode 100644
index 0000000..f6e79f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/month.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday   = std::chrono::month_weekday;
+    using month           = std::chrono::month;
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    constexpr weekday Sunday = std::chrono::Sunday;
+
+    ASSERT_NOEXCEPT(                 std::declval<const month_weekday>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const month_weekday>().month()));
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        month_weekday md(month{i}, weekday_indexed{Sunday, 1});
+        assert( static_cast<unsigned>(md.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/ok.pass.cpp
new file mode 100644
index 0000000..a46ffab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/ok.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+
+// constexpr bool ok() const noexcept;
+//  Returns: m_.ok() && wdi_.ok().
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday   = std::chrono::month_weekday;
+    using month           = std::chrono::month;
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    constexpr weekday Sunday = std::chrono::Sunday;
+
+    ASSERT_NOEXCEPT(                std::declval<const month_weekday>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday>().ok()));
+
+    static_assert(!month_weekday{month{}, weekday_indexed{}}.ok(),                   "");
+    static_assert( month_weekday{std::chrono::May, weekday_indexed{Sunday, 2}}.ok(), "");
+
+    assert(!(month_weekday(std::chrono::April, weekday_indexed{Sunday, 0}).ok()));
+    assert( (month_weekday{std::chrono::March, weekday_indexed{Sunday, 1}}.ok()));
+
+    for (unsigned i = 1; i <= 12; ++i)
+        for (unsigned j = 0; j <= 6; ++j)
+        {
+            month_weekday mwd{month{i}, weekday_indexed{Sunday, j}};
+            assert(mwd.ok() == (j >= 1 && j <= 5));
+        }
+
+    //  If the month is not ok, all the weekday_indexed are bad
+    for (unsigned i = 1; i <= 10; ++i)
+        assert(!(month_weekday{month{13}, weekday_indexed{Sunday, i}}.ok()));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/weekday_indexed.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/weekday_indexed.pass.cpp
new file mode 100644
index 0000000..54f6a4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.members/weekday_indexed.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+
+// constexpr chrono::weekday_indexed weekday_indexed() const noexcept;
+//  Returns: wdi_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday   = std::chrono::month_weekday;
+    using month           = std::chrono::month;
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    constexpr weekday Sunday = std::chrono::Sunday;
+
+    ASSERT_NOEXCEPT(                           std::declval<const month_weekday>().weekday_indexed());
+    ASSERT_SAME_TYPE(weekday_indexed, decltype(std::declval<const month_weekday>().weekday_indexed()));
+
+    static_assert( month_weekday{month{}, weekday_indexed{}}.weekday_indexed() == weekday_indexed{}, "");
+
+    for (unsigned i = 1; i <= 10; ++i)
+    {
+        month_weekday md(std::chrono::March, weekday_indexed{Sunday, i});
+        assert( static_cast<unsigned>(md.weekday_indexed().weekday() == Sunday));
+        assert( static_cast<unsigned>(md.weekday_indexed().index() == i));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..1f56785
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+
+// constexpr bool operator==(const month_weekday& x, const month_weekday& y) noexcept;
+//   Returns: x.month() == y.month() && x.day() == y.day().
+//
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using month_weekday   = std::chrono::month_weekday;
+    using month           = std::chrono::month;
+    using weekday_indexed = std::chrono::weekday_indexed;
+    using weekday         = std::chrono::weekday;
+
+    constexpr weekday Sunday = std::chrono::Sunday;
+    constexpr weekday Monday = std::chrono::Monday;
+
+    AssertEqualityAreNoexcept<month_weekday>();
+    AssertEqualityReturnBool<month_weekday>();
+
+    static_assert( testEquality(
+        month_weekday{std::chrono::January, weekday_indexed{Sunday, 1}},
+        month_weekday{std::chrono::January, weekday_indexed{Sunday, 1}},
+        true), "");
+
+    static_assert( testEquality(
+        month_weekday{std::chrono::January, weekday_indexed{Sunday, 1}},
+        month_weekday{std::chrono::January, weekday_indexed{Sunday, 2}},
+        false), "");
+
+    static_assert( testEquality(
+        month_weekday{std::chrono::January,  weekday_indexed{Sunday, 1}},
+        month_weekday{std::chrono::February, weekday_indexed{Sunday, 1}},
+        false), "");
+
+    static_assert( testEquality(
+        month_weekday{std::chrono::January, weekday_indexed{Monday, 1}},
+        month_weekday{std::chrono::January, weekday_indexed{Sunday, 2}},
+        false), "");
+
+    static_assert( testEquality(
+        month_weekday{std::chrono::January,  weekday_indexed{Monday, 1}},
+        month_weekday{std::chrono::February, weekday_indexed{Sunday, 1}},
+        false), "");
+
+//  same day, different months
+    for (unsigned i = 1; i < 12; ++i)
+        for (unsigned j = 1; j < 12; ++j)
+            assert((testEquality(
+                month_weekday{month{i}, weekday_indexed{Sunday, 1}},
+                month_weekday{month{j}, weekday_indexed{Sunday, 1}},
+                i == j)));
+
+//  same month, different weeks
+    for (unsigned i = 1; i < 5; ++i)
+        for (unsigned j = 1; j < 5; ++j)
+            assert((testEquality(
+                month_weekday{month{2}, weekday_indexed{Sunday, i}},
+                month_weekday{month{2}, weekday_indexed{Sunday, j}},
+                i == j)));
+
+//  same month, different days
+    for (unsigned i = 0; i < 6; ++i)
+        for (unsigned j = 0; j < 6; ++j)
+            assert((testEquality(
+                month_weekday{month{2}, weekday_indexed{weekday{i}, 2}},
+                month_weekday{month{2}, weekday_indexed{weekday{j}, 2}},
+                i == j)));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..006df5e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/time.cal.mwd.nonmembers/ostream.pass.cpp
@@ -0,0 +1,287 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class month_weekday;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const month_weekday& mwd);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::month_weekday mwd) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << mwd;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::month_weekday mwd) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << mwd;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::month_weekday mwd) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << mwd;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("0 is not a valid month/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}}) == SV("Jan/Mon[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{2}, std::chrono::weekday_indexed{std::chrono::weekday{2}, 2}}) == SV("Feb/Tue[2]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{3}, std::chrono::weekday_indexed{std::chrono::weekday{3}, 3}}) == SV("Mar/Wed[3]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV("Apr/Thu[4]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{5}, std::chrono::weekday_indexed{std::chrono::weekday{5}, 5}}) == SV("May/Fri[5]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{6}, std::chrono::weekday_indexed{std::chrono::weekday{6}, 6}}) ==
+         SV("Jun/Sat[6 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{7}, std::chrono::weekday_indexed{std::chrono::weekday{7}, 7}}) ==
+         SV("Jul/Sun[7 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{8}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("Aug/8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{9}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("Sep/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{10}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("Oct/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{11}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("Nov/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{12}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("Dec/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("13 is not a valid month/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[0 is not a valid index]"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("0 is not a valid month/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}}) == SV("jan/Lun[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{2}, std::chrono::weekday_indexed{std::chrono::weekday{2}, 2}}) == SV("fév/Mar[2]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{3}, std::chrono::weekday_indexed{std::chrono::weekday{3}, 3}}) == SV("mar/Mer[3]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV("avr/Jeu[4]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{5}, std::chrono::weekday_indexed{std::chrono::weekday{5}, 5}}) == SV("mai/Ven[5]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{6}, std::chrono::weekday_indexed{std::chrono::weekday{6}, 6}}) ==
+         SV("jui/Sam[6 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{7}, std::chrono::weekday_indexed{std::chrono::weekday{7}, 7}}) ==
+         SV("jul/Dim[7 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{8}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("aoû/8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{9}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("sep/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{10}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("oct/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{11}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("nov/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{12}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("déc/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("13 is not a valid month/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[0 is not a valid index]"));
+#else //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("0 is not a valid month/dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}}) == SV("janv./lun.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{2}, std::chrono::weekday_indexed{std::chrono::weekday{2}, 2}}) == SV("févr./mar.[2]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{3}, std::chrono::weekday_indexed{std::chrono::weekday{3}, 3}}) == SV("mars/mer.[3]"));
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV("avr./jeu.[4]"));
+#  else
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV("avril/jeu.[4]"));
+#  endif
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{5}, std::chrono::weekday_indexed{std::chrono::weekday{5}, 5}}) == SV("mai/ven.[5]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{6}, std::chrono::weekday_indexed{std::chrono::weekday{6}, 6}}) ==
+         SV("juin/sam.[6 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{7}, std::chrono::weekday_indexed{std::chrono::weekday{7}, 7}}) ==
+         SV("juil./dim.[7 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{8}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("août/8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{9}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("sept./dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{10}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("oct./dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{11}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("nov./dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{12}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("déc./dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("13 is not a valid month/dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[0 is not a valid index]"));
+#endif //  defined(__APPLE__)
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("0 is not a valid month/日[1]"));
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}}) == SV(" 1/月[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{2}, std::chrono::weekday_indexed{std::chrono::weekday{2}, 2}}) == SV(" 2/火[2]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{3}, std::chrono::weekday_indexed{std::chrono::weekday{3}, 3}}) == SV(" 3/水[3]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV(" 4/木[4]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{5}, std::chrono::weekday_indexed{std::chrono::weekday{5}, 5}}) == SV(" 5/金[5]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{6}, std::chrono::weekday_indexed{std::chrono::weekday{6}, 6}}) ==
+         SV(" 6/土[6 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{7}, std::chrono::weekday_indexed{std::chrono::weekday{7}, 7}}) ==
+         SV(" 7/日[7 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{8}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV(" 8/8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{9}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV(" 9/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{10}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("10/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{11}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("11/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{12}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("12/日[1]"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}}) == SV("1月/月[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{2}, std::chrono::weekday_indexed{std::chrono::weekday{2}, 2}}) == SV("2月/火[2]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{3}, std::chrono::weekday_indexed{std::chrono::weekday{3}, 3}}) == SV("3月/水[3]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV("4月/木[4]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{5}, std::chrono::weekday_indexed{std::chrono::weekday{5}, 5}}) == SV("5月/金[5]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{6}, std::chrono::weekday_indexed{std::chrono::weekday{6}, 6}}) ==
+         SV("6月/土[6 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{7}, std::chrono::weekday_indexed{std::chrono::weekday{7}, 7}}) ==
+         SV("7月/日[7 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{8}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("8月/8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{9}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("9月/日[1]"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}}) == SV(" 1月/月[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{2}, std::chrono::weekday_indexed{std::chrono::weekday{2}, 2}}) == SV(" 2月/火[2]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{3}, std::chrono::weekday_indexed{std::chrono::weekday{3}, 3}}) == SV(" 3月/水[3]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{4}, std::chrono::weekday_indexed{std::chrono::weekday{4}, 4}}) == SV(" 4月/木[4]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{5}, std::chrono::weekday_indexed{std::chrono::weekday{5}, 5}}) == SV(" 5月/金[5]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{6}, std::chrono::weekday_indexed{std::chrono::weekday{6}, 6}}) ==
+         SV(" 6月/土[6 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{7}, std::chrono::weekday_indexed{std::chrono::weekday{7}, 7}}) ==
+         SV(" 7月/日[7 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{8}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV(" 8月/8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{9}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV(" 9月/日[1]"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{10}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("10月/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{11}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("11月/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{12}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) == SV("12月/日[1]"));
+#endif   // defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}}) ==
+         SV("13 is not a valid month/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday{
+             std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[0 is not a valid index]"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/types.pass.cpp
new file mode 100644
index 0000000..edd46f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwd/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday = std::chrono::month_weekday;
+
+    static_assert(std::is_trivially_copyable_v<month_weekday>, "");
+    static_assert(std::is_standard_layout_v<month_weekday>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/ctor.pass.cpp
new file mode 100644
index 0000000..69e58d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/ctor.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday_last;
+
+//  constexpr month_weekday_last(const chrono::month& m,
+//                               const chrono::weekday_last& wdl) noexcept;
+//
+//  Effects:  Constructs an object of type month_weekday_last by
+//            initializing m_ with m, and wdl_ with wdl.
+//
+//     constexpr chrono::month        month() const noexcept;
+//     constexpr chrono::weekday_last weekday_last()  const noexcept;
+//     constexpr bool                 ok()    const noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_last       = std::chrono::weekday_last;
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    constexpr month January = std::chrono::January;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    ASSERT_NOEXCEPT(month_weekday_last{January, weekday_last{Tuesday}});
+
+    //  bad month
+    constexpr month_weekday_last mwdl1{month{}, weekday_last{Tuesday}};
+    static_assert( mwdl1.month() == month{},                      "");
+    static_assert( mwdl1.weekday_last() == weekday_last{Tuesday}, "");
+    static_assert(!mwdl1.ok(),                                    "");
+
+    //  bad weekday_last
+    constexpr month_weekday_last mwdl2{January, weekday_last{weekday{16}}};
+    static_assert( mwdl2.month() == January,                          "");
+    static_assert( mwdl2.weekday_last() == weekday_last{weekday{16}}, "");
+    static_assert(!mwdl2.ok(),                                        "");
+
+    //  Good month and weekday_last
+    constexpr month_weekday_last mwdl3{January, weekday_last{weekday{4}}};
+    static_assert( mwdl3.month() == January,                         "");
+    static_assert( mwdl3.weekday_last() == weekday_last{weekday{4}}, "");
+    static_assert( mwdl3.ok(),                                       "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/month.pass.cpp
new file mode 100644
index 0000000..d78f038
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/month.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday_last;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: m_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_last       = std::chrono::weekday_last;
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    ASSERT_NOEXCEPT(                 std::declval<const month_weekday_last>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const month_weekday_last>().month()));
+
+    static_assert( month_weekday_last{month{}, weekday_last{Tuesday}}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        month_weekday_last mdl(month{i}, weekday_last{Tuesday});
+        assert( static_cast<unsigned>(mdl.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/ok.pass.cpp
new file mode 100644
index 0000000..9833757
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/ok.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday_last;
+
+// constexpr bool ok() const noexcept;
+//  Returns: m_.ok() && wdl_.ok().
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_last       = std::chrono::weekday_last;
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    constexpr month January            = std::chrono::January;
+    constexpr weekday Tuesday          = std::chrono::Tuesday;
+    constexpr weekday_last lastTuesday = weekday_last{Tuesday};
+
+    ASSERT_NOEXCEPT(                std::declval<const month_weekday_last>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const month_weekday_last>().ok()));
+
+    static_assert(!month_weekday_last{month{}, lastTuesday}.ok(),               ""); // Bad month
+    static_assert(!month_weekday_last{January, weekday_last{weekday{12}}}.ok(), ""); // Bad month
+    static_assert( month_weekday_last{January, lastTuesday}.ok(),               ""); // Both OK
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        month_weekday_last mwdl{month{i}, lastTuesday};
+        assert( mwdl.ok() == month{i}.ok());
+    }
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        month_weekday_last mwdl{January, weekday_last{weekday{i}}};
+        assert( mwdl.ok() == weekday_last{weekday{i}}.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/weekday_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/weekday_last.pass.cpp
new file mode 100644
index 0000000..6702287
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.members/weekday_last.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday_last;
+
+// constexpr chrono::weekday_last weekday_last() const noexcept;
+//  Returns: wdl_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_last       = std::chrono::weekday_last;
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    constexpr month January            = std::chrono::January;
+    constexpr weekday Tuesday          = std::chrono::Tuesday;
+    constexpr weekday_last lastTuesday = weekday_last{Tuesday};
+
+    ASSERT_NOEXCEPT(                        std::declval<const month_weekday_last>().weekday_last());
+    ASSERT_SAME_TYPE(weekday_last, decltype(std::declval<const month_weekday_last>().weekday_last()));
+
+    static_assert( month_weekday_last{month{}, lastTuesday}.weekday_last() == lastTuesday, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        month_weekday_last mdl(January, weekday_last{weekday{i}});
+        assert( mdl.weekday_last().weekday().c_encoding() == (i == 7 ? 0 : i));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..740ffea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday_last;
+
+// constexpr bool operator==(const month_weekday_last& x, const month_weekday_last& y) noexcept;
+//   Returns: x.month() == y.month()
+//
+// constexpr bool operator< (const month_weekday_last& x, const month_weekday_last& y) noexcept;
+//   Returns: x.month() < y.month()
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using month              = std::chrono::month;
+    using weekday_last       = std::chrono::weekday_last;
+    using weekday            = std::chrono::weekday;
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    constexpr month January = std::chrono::January;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr weekday Wednesday = std::chrono::Wednesday;
+
+    AssertEqualityAreNoexcept<month_weekday_last>();
+    AssertEqualityReturnBool<month_weekday_last>();
+
+    static_assert( testEquality(
+        month_weekday_last{std::chrono::January, weekday_last{Tuesday}},
+        month_weekday_last{std::chrono::January, weekday_last{Tuesday}},
+        true), "");
+
+    static_assert( testEquality(
+        month_weekday_last{std::chrono::January, weekday_last{Tuesday}},
+        month_weekday_last{std::chrono::January, weekday_last{Wednesday}},
+        false), "");
+
+    //  vary the months
+    for (unsigned i = 1; i < 12; ++i)
+        for (unsigned j = 1; j < 12; ++j)
+            assert((testEquality(
+                month_weekday_last{month{i}, weekday_last{Tuesday}},
+                month_weekday_last{month{j}, weekday_last{Tuesday}},
+            i == j)));
+
+    //  vary the weekday
+    for (unsigned i = 0; i < 6; ++i)
+        for (unsigned j = 0; j < 6; ++j)
+            assert((testEquality(
+                month_weekday_last{January, weekday_last{weekday{i}}},
+                month_weekday_last{January, weekday_last{weekday{j}}},
+            i == j)));
+
+    //  both different
+    assert((testEquality(
+        month_weekday_last{month{1}, weekday_last{weekday{1}}},
+        month_weekday_last{month{2}, weekday_last{weekday{2}}},
+    false)));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..0a76fbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/time.cal.mwdlast.nonmembers/ostream.pass.cpp
@@ -0,0 +1,278 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class month_weekday_last;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const month_weekday_last& mwdl);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::month_weekday_last mwdl) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << mwdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::month_weekday_last mwdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << mwdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::month_weekday_last mwdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << mwdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("0 is not a valid month/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("Jan/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{2}, std::chrono::weekday_last{std::chrono::weekday{1}}}) == SV("Feb/Mon[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{3}, std::chrono::weekday_last{std::chrono::weekday{2}}}) == SV("Mar/Tue[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV("Apr/Wed[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{5}, std::chrono::weekday_last{std::chrono::weekday{4}}}) == SV("May/Thu[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{6}, std::chrono::weekday_last{std::chrono::weekday{5}}}) == SV("Jun/Fri[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{7}, std::chrono::weekday_last{std::chrono::weekday{6}}}) == SV("Jul/Sat[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{8}, std::chrono::weekday_last{std::chrono::weekday{7}}}) == SV("Aug/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{9}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("Sep/8 is not a valid weekday[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{10}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("Oct/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{11}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("Nov/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{12}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("Dec/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{13}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("13 is not a valid month/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{255}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[last]"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("0 is not a valid month/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("jan/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{2}, std::chrono::weekday_last{std::chrono::weekday{1}}}) == SV("fév/Lun[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{3}, std::chrono::weekday_last{std::chrono::weekday{2}}}) == SV("mar/Mar[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV("avr/Mer[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{5}, std::chrono::weekday_last{std::chrono::weekday{4}}}) == SV("mai/Jeu[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{6}, std::chrono::weekday_last{std::chrono::weekday{5}}}) == SV("jui/Ven[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{7}, std::chrono::weekday_last{std::chrono::weekday{6}}}) == SV("jul/Sam[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{8}, std::chrono::weekday_last{std::chrono::weekday{7}}}) == SV("aoû/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{9}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("sep/8 is not a valid weekday[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{10}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("oct/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{11}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("nov/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{12}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("déc/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{13}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("13 is not a valid month/Dim[last]"));
+#else    //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("0 is not a valid month/dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("janv./dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{2}, std::chrono::weekday_last{std::chrono::weekday{1}}}) == SV("févr./lun.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{3}, std::chrono::weekday_last{std::chrono::weekday{2}}}) == SV("mars/mar.[last]"));
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV("avr./mer.[last]"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV("avril/mer.[last]"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{5}, std::chrono::weekday_last{std::chrono::weekday{4}}}) == SV("mai/jeu.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{6}, std::chrono::weekday_last{std::chrono::weekday{5}}}) == SV("juin/ven.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{7}, std::chrono::weekday_last{std::chrono::weekday{6}}}) == SV("juil./sam.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{8}, std::chrono::weekday_last{std::chrono::weekday{7}}}) == SV("août/dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{9}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("sept./8 is not a valid weekday[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{10}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("oct./dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{11}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("nov./dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{12}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("déc./dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{13}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("13 is not a valid month/dim.[last]"));
+#endif   //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{255}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[last]"));
+
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("0 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV(" 1/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{2}, std::chrono::weekday_last{std::chrono::weekday{1}}}) == SV(" 2/月[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{3}, std::chrono::weekday_last{std::chrono::weekday{2}}}) == SV(" 3/火[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV(" 4/水[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{5}, std::chrono::weekday_last{std::chrono::weekday{4}}}) == SV(" 5/木[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{6}, std::chrono::weekday_last{std::chrono::weekday{5}}}) == SV(" 6/金[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{7}, std::chrono::weekday_last{std::chrono::weekday{6}}}) == SV(" 7/土[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{8}, std::chrono::weekday_last{std::chrono::weekday{7}}}) == SV(" 8/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{9}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV(" 9/8 is not a valid weekday[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{10}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("10/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{11}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("11/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{12}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("12/日[last]"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("0 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("1月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{2}, std::chrono::weekday_last{std::chrono::weekday{1}}}) == SV("2月/月[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{3}, std::chrono::weekday_last{std::chrono::weekday{2}}}) == SV("3月/火[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV("4月/水[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{5}, std::chrono::weekday_last{std::chrono::weekday{4}}}) == SV("5月/木[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{6}, std::chrono::weekday_last{std::chrono::weekday{5}}}) == SV("6月/金[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{7}, std::chrono::weekday_last{std::chrono::weekday{6}}}) == SV("7月/土[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{8}, std::chrono::weekday_last{std::chrono::weekday{7}}}) == SV("8月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{9}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("9月/8 is not a valid weekday[last]"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("0 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV(" 1月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{2}, std::chrono::weekday_last{std::chrono::weekday{1}}}) == SV(" 2月/月[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{3}, std::chrono::weekday_last{std::chrono::weekday{2}}}) == SV(" 3月/火[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{4}, std::chrono::weekday_last{std::chrono::weekday{3}}}) == SV(" 4月/水[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{5}, std::chrono::weekday_last{std::chrono::weekday{4}}}) == SV(" 5月/木[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{6}, std::chrono::weekday_last{std::chrono::weekday{5}}}) == SV(" 6月/金[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{7}, std::chrono::weekday_last{std::chrono::weekday{6}}}) == SV(" 7月/土[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{8}, std::chrono::weekday_last{std::chrono::weekday{7}}}) == SV(" 8月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{9}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV(" 9月/8 is not a valid weekday[last]"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{10}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("10月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{11}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("11月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{12}, std::chrono::weekday_last{std::chrono::weekday{0}}}) == SV("12月/日[last]"));
+#endif   // defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{13}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("13 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::month_weekday_last{
+             std::chrono::month{255}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("255 is not a valid month/8 is not a valid weekday[last]"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/types.pass.cpp
new file mode 100644
index 0000000..f2f6601
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.mwdlast/types.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// class month_weekday_last;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    static_assert(std::is_trivially_copyable_v<month_weekday_last>, "");
+    static_assert(std::is_standard_layout_v<month_weekday_last>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_day.pass.cpp
new file mode 100644
index 0000000..1def28f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_day.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day;
+
+// constexpr month_day
+//   operator/(const month& m, const day& d) noexcept;
+// Returns: {m, d}.
+//
+// constexpr month_day
+//   operator/(const day& d, const month& m) noexcept;
+// Returns: m / d.
+
+// constexpr month_day
+//   operator/(const month& m, int d) noexcept;
+// Returns: m / day(d).
+//
+// constexpr month_day
+//   operator/(int m, const day& d) noexcept;
+// Returns: month(m) / d.
+//
+// constexpr month_day
+//   operator/(const day& d, int m) noexcept;
+// Returns: month(m) / d.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_day = std::chrono::month_day;
+    using month     = std::chrono::month;
+    using day       = std::chrono::day;
+
+    constexpr month February = std::chrono::February;
+
+    { // operator/(const month& m, const day& d) (and switched)
+        ASSERT_NOEXCEPT (                    February/day{1});
+        ASSERT_SAME_TYPE(month_day, decltype(February/day{1}));
+        ASSERT_NOEXCEPT (                    day{1}/February);
+        ASSERT_SAME_TYPE(month_day, decltype(day{1}/February));
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 30; ++j)
+            {
+                month m(i);
+                day   d{j};
+                month_day md1 = m/d;
+                month_day md2 = d/m;
+                assert(md1.month() == m);
+                assert(md1.day()   == d);
+                assert(md2.month() == m);
+                assert(md2.day()   == d);
+                assert(md1 == md2);
+            }
+    }
+
+
+    { // operator/(const month& m, int d) (NOT switched)
+        ASSERT_NOEXCEPT (                    February/2);
+        ASSERT_SAME_TYPE(month_day, decltype(February/2));
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 30; ++j)
+            {
+                month m(i);
+                day   d(j);
+                month_day md1 = m/j;
+                assert(md1.month() == m);
+                assert(md1.day()   == d);
+            }
+    }
+
+
+    { // operator/(const day& d, int m) (and switched)
+        ASSERT_NOEXCEPT (                    day{2}/2);
+        ASSERT_SAME_TYPE(month_day, decltype(day{2}/2));
+        ASSERT_NOEXCEPT (                    2/day{2});
+        ASSERT_SAME_TYPE(month_day, decltype(2/day{2}));
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 30; ++j)
+            {
+                month m(i);
+                day   d(j);
+                month_day md1 = d/i;
+                month_day md2 = i/d;
+                assert(md1.month() == m);
+                assert(md1.day()   == d);
+                assert(md2.month() == m);
+                assert(md2.day()   == d);
+                assert(md1 == md2);
+            }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_day_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_day_last.pass.cpp
new file mode 100644
index 0000000..751a531
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_day_last.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_day_last;
+
+// constexpr month_day_last
+//   operator/(const month& m, last_spec) noexcept;
+// Returns: month_day_last{m}.
+//
+// constexpr month_day_last
+//   operator/(int m, last_spec) noexcept;
+// Returns: month(m) / last.
+//
+// constexpr month_day_last
+//   operator/(last_spec, const month& m) noexcept;
+// Returns: m / last.
+//
+// constexpr month_day_last
+//   operator/(last_spec, int m) noexcept;
+// Returns: month(m) / last.
+//
+//
+// [Note: A month_day_last object can be constructed using the expression m/last or last/m,
+//     where m is an expression of type month. - end note]
+// [Example:
+//     constexpr auto mdl = February/last; // mdl is the last day of February of an as yet unspecified year
+//     static_assert(mdl.month() == February);
+// --end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month          = std::chrono::month;
+    using month_day_last = std::chrono::month_day_last;
+
+    constexpr month February = std::chrono::February;
+    constexpr std::chrono::last_spec last = std::chrono::last;
+
+    ASSERT_SAME_TYPE(month_day_last, decltype(last/February));
+    ASSERT_SAME_TYPE(month_day_last, decltype(February/last));
+
+    //  Run the example
+    {
+    constexpr auto mdl = February/std::chrono::last;
+    static_assert(mdl.month() == February, "");
+    }
+
+    { // operator/(const month& m, last_spec) and switched
+        ASSERT_NOEXCEPT (                         last/February);
+        ASSERT_SAME_TYPE(month_day_last, decltype(last/February));
+        ASSERT_NOEXCEPT (                         February/last);
+        ASSERT_SAME_TYPE(month_day_last, decltype(February/last));
+
+        static_assert((last/February).month() == February, "");
+        static_assert((February/last).month() == February, "");
+
+        for (unsigned i = 1; i < 12; ++i)
+        {
+            month m{i};
+            month_day_last mdl1 = last/m;
+            month_day_last mdl2 = m/last;
+            assert(mdl1.month() == m);
+            assert(mdl2.month() == m);
+            assert(mdl1 == mdl2);
+        }
+    }
+
+    { // operator/(int, last_spec) and switched
+        ASSERT_NOEXCEPT (                         last/2);
+        ASSERT_SAME_TYPE(month_day_last, decltype(last/2));
+        ASSERT_NOEXCEPT (                         2/last);
+        ASSERT_SAME_TYPE(month_day_last, decltype(2/last));
+
+        static_assert((last/2).month() == February, "");
+        static_assert((2/last).month() == February, "");
+
+        for (unsigned i = 1; i < 12; ++i)
+        {
+            month m{i};
+            month_day_last mdl1 = last/i;
+            month_day_last mdl2 = i/last;
+            assert(mdl1.month() == m);
+            assert(mdl2.month() == m);
+            assert(mdl1 == mdl2);
+        }
+    }
+
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_weekday.pass.cpp
new file mode 100644
index 0000000..31888b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_weekday.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday;
+
+// constexpr month_weekday
+//   operator/(const month& m, const weekday_indexed& wdi) noexcept;
+// Returns: {m, wdi}.
+//
+// constexpr month_weekday
+//   operator/(int m, const weekday_indexed& wdi) noexcept;
+// Returns: month(m) / wdi.
+//
+// constexpr month_weekday
+//   operator/(const weekday_indexed& wdi, const month& m) noexcept;
+// Returns: m / wdi. constexpr month_weekday
+//
+// constexpr month_weekday
+//   operator/(const weekday_indexed& wdi, int m) noexcept;
+// Returns: month(m) / wdi.
+
+//
+// [Example:
+// constexpr auto mwd = February/Tuesday[3]; // mwd is the third Tuesday of February of an as yet unspecified year
+//      static_assert(mwd.month() == February);
+//      static_assert(mwd.weekday_indexed() == Tuesday[3]);
+// -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday   = std::chrono::month_weekday;
+    using month           = std::chrono::month;
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month February = std::chrono::February;
+
+    { // operator/(const month& m, const weekday_indexed& wdi) (and switched)
+        ASSERT_NOEXCEPT (February/Tuesday[2]);
+        ASSERT_SAME_TYPE(month_weekday, decltype(February/Tuesday[2]));
+        ASSERT_NOEXCEPT (Tuesday[2]/February);
+        ASSERT_SAME_TYPE(month_weekday, decltype(Tuesday[2]/February));
+
+    //  Run the example
+        {
+        constexpr month_weekday wdi = February/Tuesday[3];
+        static_assert(wdi.month()           == February,   "");
+        static_assert(wdi.weekday_indexed() == Tuesday[3], "");
+        }
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 6; ++j)
+                for (unsigned k = 1; k <= 5; ++k)
+                {
+                    month m(i);
+                    weekday_indexed wdi = weekday{j}[k];
+                    month_weekday mwd1 = m/wdi;
+                    month_weekday mwd2 = wdi/m;
+                    assert(mwd1.month() == m);
+                    assert(mwd1.weekday_indexed() == wdi);
+                    assert(mwd2.month() == m);
+                    assert(mwd2.weekday_indexed() == wdi);
+                    assert(mwd1 == mwd2);
+                }
+    }
+
+
+    { // operator/(int m, const weekday_indexed& wdi) (and switched)
+        ASSERT_NOEXCEPT (2/Tuesday[2]);
+        ASSERT_SAME_TYPE(month_weekday, decltype(2/Tuesday[2]));
+        ASSERT_NOEXCEPT (Tuesday[2]/2);
+        ASSERT_SAME_TYPE(month_weekday, decltype(Tuesday[2]/2));
+
+    //  Run the example
+        {
+        constexpr month_weekday wdi = 2/Tuesday[3];
+        static_assert(wdi.month()           == February,   "");
+        static_assert(wdi.weekday_indexed() == Tuesday[3], "");
+        }
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 6; ++j)
+                for (unsigned k = 1; k <= 5; ++k)
+                {
+                    weekday_indexed wdi = weekday{j}[k];
+                    month_weekday mwd1 = i/wdi;
+                    month_weekday mwd2 = wdi/i;
+                    assert(mwd1.month() == month(i));
+                    assert(mwd1.weekday_indexed() == wdi);
+                    assert(mwd2.month() == month(i));
+                    assert(mwd2.weekday_indexed() == wdi);
+                    assert(mwd1 == mwd2);
+                }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_weekday_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_weekday_last.pass.cpp
new file mode 100644
index 0000000..5f5e1e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/month_weekday_last.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class month_weekday_last;
+
+// constexpr month_weekday_last
+//   operator/(const month& m, const weekday_last& wdl) noexcept;
+// Returns: {m, wdl}.
+//
+// constexpr month_weekday_last
+//   operator/(int m, const weekday_last& wdl) noexcept;
+// Returns: month(m) / wdl.
+//
+// constexpr month_weekday_last
+//   operator/(const weekday_last& wdl, const month& m) noexcept;
+// Returns: m / wdl.
+//
+// constexpr month_weekday_last
+//   operator/(const weekday_last& wdl, int m) noexcept;
+// Returns: month(m) / wdl.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month_weekday      = std::chrono::month_weekday;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_last       = std::chrono::weekday_last;
+    using month_weekday_last = std::chrono::month_weekday_last;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month February = std::chrono::February;
+    constexpr std::chrono::last_spec last = std::chrono::last;
+
+    { // operator/(const month& m, const weekday_last& wdi) (and switched)
+        ASSERT_NOEXCEPT (February/Tuesday[last]);
+        ASSERT_SAME_TYPE(month_weekday_last, decltype(February/Tuesday[last]));
+        ASSERT_NOEXCEPT (Tuesday[last]/February);
+        ASSERT_SAME_TYPE(month_weekday_last, decltype(Tuesday[last]/February));
+
+    //  Run the example
+        {
+        constexpr month_weekday_last wdi = February/Tuesday[last];
+        static_assert(wdi.month()        == February,      "");
+        static_assert(wdi.weekday_last() == Tuesday[last], "");
+        }
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 6; ++j)
+            {
+                month m(i);
+                weekday_last wdi = weekday{j}[last];
+                month_weekday_last mwd1 = m/wdi;
+                month_weekday_last mwd2 = wdi/m;
+                assert(mwd1.month() == m);
+                assert(mwd1.weekday_last() == wdi);
+                assert(mwd2.month() == m);
+                assert(mwd2.weekday_last() == wdi);
+                assert(mwd1 == mwd2);
+            }
+    }
+
+
+    { // operator/(int m, const weekday_last& wdi) (and switched)
+        ASSERT_NOEXCEPT (2/Tuesday[2]);
+        ASSERT_SAME_TYPE(month_weekday_last, decltype(2/Tuesday[last]));
+        ASSERT_NOEXCEPT (Tuesday[2]/2);
+        ASSERT_SAME_TYPE(month_weekday_last, decltype(Tuesday[last]/2));
+
+    //  Run the example
+        {
+        constexpr month_weekday wdi = 2/Tuesday[3];
+        static_assert(wdi.month()           == February,   "");
+        static_assert(wdi.weekday_indexed() == Tuesday[3], "");
+        }
+
+        for (int i = 1; i <= 12; ++i)
+            for (unsigned j = 0; j <= 6; ++j)
+            {
+                weekday_last wdi = weekday{j}[last];
+                month_weekday_last mwd1 = i/wdi;
+                month_weekday_last mwd2 = wdi/i;
+                assert(mwd1.month() == month(i));
+                assert(mwd1.weekday_last() == wdi);
+                assert(mwd2.month() == month(i));
+                assert(mwd2.weekday_last() == wdi);
+                assert(mwd1 == mwd2);
+            }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month.pass.cpp
new file mode 100644
index 0000000..2691d32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr year_month operator/(const year& y, const month& m) noexcept;
+//   Returns: {y, m}.
+//
+// constexpr year_month operator/(const year& y, int m) noexcept;
+//   Returns: y / month(m).
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month      = std::chrono::month;
+    using year       = std::chrono::year;
+    using year_month = std::chrono::year_month;
+
+    constexpr month February = std::chrono::February;
+
+    { // operator/(const year& y, const month& m)
+        ASSERT_NOEXCEPT (                     year{2018}/February);
+        ASSERT_SAME_TYPE(year_month, decltype(year{2018}/February));
+
+        static_assert((year{2018}/February).year()  == year{2018}, "");
+        static_assert((year{2018}/February).month() == month{2},   "");
+        for (int i = 1000; i <= 1030; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+            {
+                year_month ym = year{i}/month{j};
+                assert(static_cast<int>(ym.year())       == i);
+                assert(static_cast<unsigned>(ym.month()) == j);
+            }
+    }
+
+
+    { // operator/(const year& y, const int m)
+        ASSERT_NOEXCEPT (                     year{2018}/4);
+        ASSERT_SAME_TYPE(year_month, decltype(year{2018}/4));
+
+        static_assert((year{2018}/2).year()  == year{2018}, "");
+        static_assert((year{2018}/2).month() == month{2},   "");
+
+        for (int i = 1000; i <= 1030; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+            {
+                year_month ym = year{i}/j;
+                assert(static_cast<int>(ym.year())       == i);
+                assert(static_cast<unsigned>(ym.month()) == j);
+            }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_day.pass.cpp
new file mode 100644
index 0000000..742207d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_day.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr year_month_day
+//   operator/(const year_month& ym, const day& d) noexcept;
+// Returns: {ym.year(), ym.month(), d}.
+//
+// constexpr year_month_day
+//   operator/(const year_month& ym, int d) noexcept;
+// Returns: ym / day(d).
+//
+// constexpr year_month_day
+//   operator/(const year& y, const month_day& md) noexcept;
+// Returns: y / md.month() / md.day().
+//
+// constexpr year_month_day
+//   operator/(int y, const month_day& md) noexcept;
+// Returns: year(y) / md.
+//
+// constexpr year_month_day
+//   operator/(const month_day& md, const year& y) noexcept;
+// Returns: y / md.
+//
+// constexpr year_month_day
+//   operator/(const month_day& md, int y) noexcept;
+// Returns: year(y) / md.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month     = std::chrono::year_month;
+    using month_day      = std::chrono::month_day;
+    using year_month_day = std::chrono::year_month_day;
+
+    constexpr month February = std::chrono::February;
+    constexpr year_month Feb2018{year{2018}, February};
+
+    { // operator/(const year_month& ym, const day& d)
+        ASSERT_NOEXCEPT (                         Feb2018/day{2});
+        ASSERT_SAME_TYPE(year_month_day, decltype(Feb2018/day{2}));
+
+        static_assert((Feb2018/day{2}).month() == February, "");
+        static_assert((Feb2018/day{2}).day()   == day{2},   "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 28; ++k)
+                {
+                    year y(i);
+                    month m(j);
+                    day d(k);
+                    year_month ym(y, m);
+                    year_month_day ymd = ym/d;
+                    assert(ymd.year()  == y);
+                    assert(ymd.month() == m);
+                    assert(ymd.day()   == d);
+                }
+    }
+
+
+    { // operator/(const year_month& ym, int d)
+        ASSERT_NOEXCEPT (                         Feb2018/2);
+        ASSERT_SAME_TYPE(year_month_day, decltype(Feb2018/2));
+
+        static_assert((Feb2018/2).month() == February, "");
+        static_assert((Feb2018/2).day()   == day{2},   "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 28; ++k)
+                {
+                    year y(i);
+                    month m(j);
+                    day d(k);
+                    year_month ym(y, m);
+                    year_month_day ymd = ym/k;
+                    assert(ymd.year()  == y);
+                    assert(ymd.month() == m);
+                    assert(ymd.day()   == d);
+                }
+    }
+
+
+    { // operator/(const year_month& ym, int d)
+        ASSERT_NOEXCEPT (                         Feb2018/2);
+        ASSERT_SAME_TYPE(year_month_day, decltype(Feb2018/2));
+
+        static_assert((Feb2018/2).month() == February, "");
+        static_assert((Feb2018/2).day()   == day{2},   "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 28; ++k)
+                {
+                    year y(i);
+                    month m(j);
+                    day d(k);
+                    year_month ym(y, m);
+                    year_month_day ymd = ym/k;
+                    assert(ymd.year()  == y);
+                    assert(ymd.month() == m);
+                    assert(ymd.day()   == d);
+                }
+    }
+
+
+
+
+    { // operator/(const year& y, const month_day& md) (and switched)
+        ASSERT_NOEXCEPT (                         year{2018}/month_day{February, day{2}});
+        ASSERT_SAME_TYPE(year_month_day, decltype(year{2018}/month_day{February, day{2}}));
+        ASSERT_NOEXCEPT (                         month_day{February, day{2}}/year{2018});
+        ASSERT_SAME_TYPE(year_month_day, decltype(month_day{February, day{2}}/year{2018}));
+
+        static_assert((year{2018}/month_day{February, day{2}}).month() == February, "" );
+        static_assert((year{2018}/month_day{February, day{2}}).day()   == day{2},   "" );
+        static_assert((month_day{February, day{2}}/year{2018}).month() == February, "" );
+        static_assert((month_day{February, day{2}}/year{2018}).day()   == day{2},   "" );
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 28; ++k)
+                {
+                    year y(i);
+                    month m(j);
+                    day d(k);
+                    month_day md(m, d);
+                    year_month_day ymd1 = y/md;
+                    year_month_day ymd2 = md/y;
+                    assert(ymd1.year()  == y);
+                    assert(ymd2.year()  == y);
+                    assert(ymd1.month() == m);
+                    assert(ymd2.month() == m);
+                    assert(ymd1.day()   == d);
+                    assert(ymd2.day()   == d);
+                    assert(ymd1 == ymd2);
+                }
+    }
+
+    { // operator/(const month_day& md, int y) (and switched)
+        ASSERT_NOEXCEPT (                         2018/month_day{February, day{2}});
+        ASSERT_SAME_TYPE(year_month_day, decltype(2018/month_day{February, day{2}}));
+        ASSERT_NOEXCEPT (                         month_day{February, day{2}}/2018);
+        ASSERT_SAME_TYPE(year_month_day, decltype(month_day{February, day{2}}/2018));
+
+        static_assert((2018/month_day{February, day{2}}).month() == February, "" );
+        static_assert((2018/month_day{February, day{2}}).day()   == day{2},   "" );
+        static_assert((month_day{February, day{2}}/2018).month() == February, "" );
+        static_assert((month_day{February, day{2}}/2018).day()   == day{2},   "" );
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 28; ++k)
+                {
+                    year y(i);
+                    month m(j);
+                    day d(k);
+                    month_day md(m, d);
+                    year_month_day ymd1 = i/md;
+                    year_month_day ymd2 = md/i;
+                    assert(ymd1.year()  == y);
+                    assert(ymd2.year()  == y);
+                    assert(ymd1.month() == m);
+                    assert(ymd2.month() == m);
+                    assert(ymd1.day()   == d);
+                    assert(ymd2.day()   == d);
+                    assert(ymd1 == ymd2);
+                }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_day_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_day_last.pass.cpp
new file mode 100644
index 0000000..68ae5e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_day_last.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+// class year_month_day_last;
+
+// constexpr year_month_day_last
+//   operator/(const year_month& ym, last_spec) noexcept;
+// Returns: {ym.year(), month_day_last{ym.month()}}.
+
+
+// constexpr year_month_day_last
+//   operator/(const year& y, const month_day_last& mdl) noexcept;
+// Returns: {y, mdl}.
+//
+// constexpr year_month_day_last
+//   operator/(int y, const month_day_last& mdl) noexcept;
+// Returns: year(y) / mdl.
+//
+// constexpr year_month_day_last
+//   operator/(const month_day_last& mdl, const year& y) noexcept;
+// Returns: y / mdl.
+//
+// constexpr year_month_day_last
+//   operator/(const month_day_last& mdl, int y) noexcept;
+// Returns: year(y) / mdl.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using day                 = std::chrono::day;
+    using month               = std::chrono::month;
+    using year_month          = std::chrono::year_month;
+    using year                = std::chrono::year;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    constexpr month February = std::chrono::February;
+    constexpr std::chrono::last_spec last = std::chrono::last;
+
+    { // operator/(const year_month& ym, last_spec)
+        constexpr year_month Feb2018{year{2018}, February};
+
+        ASSERT_NOEXCEPT (                              Feb2018/last);
+        ASSERT_SAME_TYPE(year_month_day_last, decltype(Feb2018/last));
+
+        static_assert((Feb2018/last).year()  == year{2018}, "");
+        static_assert((Feb2018/last).month() == February,   "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+            {
+                year y{i};
+                month m{j};
+                year_month_day_last ymdl = year_month{y,m}/last;
+                assert(ymdl.year()  == y);
+                assert(ymdl.month() == m);
+            }
+    }
+
+
+    { // operator/(const year& y, const month_day_last& mdl) (and switched)
+        ASSERT_NOEXCEPT (                              year{2018}/month_day_last{February});
+        ASSERT_SAME_TYPE(year_month_day_last, decltype(year{2018}/month_day_last{February}));
+        ASSERT_NOEXCEPT (                              month_day_last{February}/year{2018});
+        ASSERT_SAME_TYPE(year_month_day_last, decltype(month_day_last{February}/year{2018}));
+
+        static_assert((year{2018}/month_day_last{February}).month() == February,   "");
+        static_assert((year{2018}/month_day_last{February}).year()  == year{2018}, "");
+        static_assert((month_day_last{February}/year{2018}).month() == February,   "");
+        static_assert((month_day_last{February}/year{2018}).year()  == year{2018}, "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+            {
+                year y{i};
+                month m{j};
+                year_month_day_last ymdl1 = y/month_day_last{m};
+                year_month_day_last ymdl2 = month_day_last{m}/y;
+                assert(ymdl1.month() == m);
+                assert(ymdl2.month() == m);
+                assert(ymdl2.year()  == y);
+                assert(ymdl1.year()  == y);
+                assert(ymdl1 == ymdl2);
+            }
+    }
+
+    { // operator/(int y, const month_day_last& mdl) (and switched)
+        ASSERT_NOEXCEPT (                              2018/month_day_last{February});
+        ASSERT_SAME_TYPE(year_month_day_last, decltype(2018/month_day_last{February}));
+        ASSERT_NOEXCEPT (                              month_day_last{February}/2018);
+        ASSERT_SAME_TYPE(year_month_day_last, decltype(month_day_last{February}/2018));
+
+        static_assert((2018/month_day_last{February}).month() == February,   "");
+        static_assert((2018/month_day_last{February}).year()  == year{2018}, "");
+        static_assert((month_day_last{February}/2018).month() == February,   "");
+        static_assert((month_day_last{February}/2018).year()  == year{2018}, "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+            {
+                year y{i};
+                month m{j};
+                year_month_day_last ymdl1 = i/month_day_last{m};
+                year_month_day_last ymdl2 = month_day_last{m}/i;
+                assert(ymdl1.month() == m);
+                assert(ymdl2.month() == m);
+                assert(ymdl2.year()  == y);
+                assert(ymdl1.year()  == y);
+                assert(ymdl1 == ymdl2);
+            }
+    }
+
+    // the result of year_month_day_last::day() is unspecified when !ok(),
+    // but it shouldn't crash.
+    {
+        year_month_day_last ymdl = year{2020}/month{13}/last;
+        assert(!ymdl.ok());
+        day d = ymdl.day(); (void)d; // doesn't crash
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_weekday.pass.cpp
new file mode 100644
index 0000000..59d3875
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_weekday.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr year_month_weekday
+//   operator/(const year_month& ym, const weekday_indexed& wdi) noexcept;
+// Returns: {ym.year(), ym.month(), wdi}.
+//
+// constexpr year_month_weekday
+//   operator/(const year& y, const month_weekday& mwd) noexcept;
+// Returns: {y, mwd.month(), mwd.weekday_indexed()}.
+//
+// constexpr year_month_weekday
+//   operator/(int y, const month_weekday& mwd) noexcept;
+// Returns: year(y) / mwd.
+//
+// constexpr year_month_weekday
+//   operator/(const month_weekday& mwd, const year& y) noexcept;
+// Returns: y / mwd.
+//
+// constexpr year_month_weekday
+//   operator/(const month_weekday& mwd, int y) noexcept;
+// Returns: year(y) / mwd.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using year_month         = std::chrono::year_month;
+    using month_weekday      = std::chrono::month_weekday;
+    using year_month_weekday = std::chrono::year_month_weekday;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month February = std::chrono::February;
+
+
+    { // operator/(const year_month& ym, const weekday_indexed& wdi)
+        constexpr year_month Feb2018{year{2018}, February};
+
+        ASSERT_NOEXCEPT (                             Feb2018/weekday_indexed{Tuesday, 2});
+        ASSERT_SAME_TYPE(year_month_weekday, decltype(Feb2018/weekday_indexed{Tuesday, 2}));
+
+        static_assert((Feb2018/weekday_indexed{Tuesday, 2}).year()    == year{2018}, "" );
+        static_assert((Feb2018/weekday_indexed{Tuesday, 2}).month()   == February, "" );
+        static_assert((Feb2018/weekday_indexed{Tuesday, 2}).weekday() == Tuesday,  "" );
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 6; ++k)
+                    for (unsigned l = 1; l <= 5; ++l)
+                    {
+                        year y(i);
+                        month m(j);
+                        weekday wd{k};
+                        year_month_weekday ymd = year_month{y,m}/weekday_indexed{wd,l};
+                        assert(ymd.year()    == y);
+                        assert(ymd.month()   == m);
+                        assert(ymd.weekday() == wd);
+                    }
+    }
+
+    { // operator/(const year& y, const month_weekday& mwd) (and switched)
+        constexpr month_weekday Feb1stTues{February, weekday_indexed{Tuesday, 1}};
+        ASSERT_NOEXCEPT (                             year{2018}/Feb1stTues);
+        ASSERT_SAME_TYPE(year_month_weekday, decltype(year{2018}/Feb1stTues));
+        ASSERT_NOEXCEPT (                             Feb1stTues/year{2018});
+        ASSERT_SAME_TYPE(year_month_weekday, decltype(Feb1stTues/year{2018}));
+
+        static_assert((year{2018}/Feb1stTues).year()    == year{2018}, "" );
+        static_assert((year{2018}/Feb1stTues).month()   == February, "" );
+        static_assert((year{2018}/Feb1stTues).weekday() == Tuesday,  "" );
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 6; ++k)
+                    for (unsigned l = 1; l <= 5; ++l)
+                    {
+                        year y(i);
+                        month m(j);
+                        weekday wd{k};
+                        month_weekday mwd{m, weekday_indexed{weekday{k}, l}};
+                        year_month_weekday ymd1 = y/mwd;
+                        year_month_weekday ymd2 = mwd/y;
+                        assert(ymd1.year()    == y);
+                        assert(ymd2.year()    == y);
+                        assert(ymd1.month()   == m);
+                        assert(ymd2.month()   == m);
+                        assert(ymd1.weekday() == wd);
+                        assert(ymd2.weekday() == wd);
+                        assert(ymd1 == ymd2);
+                    }
+    }
+
+
+    { // operator/(int y, const month_weekday& mwd) (and switched)
+        constexpr month_weekday Feb1stTues{February, weekday_indexed{Tuesday, 1}};
+        ASSERT_NOEXCEPT (                             2018/Feb1stTues);
+        ASSERT_SAME_TYPE(year_month_weekday, decltype(2018/Feb1stTues));
+        ASSERT_NOEXCEPT (                             Feb1stTues/2018);
+        ASSERT_SAME_TYPE(year_month_weekday, decltype(Feb1stTues/2018));
+
+        static_assert((2018/Feb1stTues).year()    == year{2018}, "" );
+        static_assert((2018/Feb1stTues).month()   == February, "" );
+        static_assert((2018/Feb1stTues).weekday() == Tuesday,  "" );
+
+        for (int i = 1000; i < 1010; ++i)
+            for (int j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 6; ++k)
+                    for (unsigned l = 1; l <= 5; ++l)
+                    {
+                        year y(i);
+                        month m(j);
+                        weekday wd{k};
+                        month_weekday mwd{m, weekday_indexed{weekday{k}, l}};
+                        year_month_weekday ymd1 = i/mwd;
+                        year_month_weekday ymd2 = mwd/i;
+                        assert(ymd1.year()    == y);
+                        assert(ymd2.year()    == y);
+                        assert(ymd1.month()   == m);
+                        assert(ymd2.month()   == m);
+                        assert(ymd1.weekday() == wd);
+                        assert(ymd2.weekday() == wd);
+                        assert(ymd1 == ymd2);
+                    }
+     }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_weekday_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_weekday_last.pass.cpp
new file mode 100644
index 0000000..988daf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.operators/year_month_weekday_last.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr year_month_weekday_last
+//   operator/(const year_month& ym, const weekday_last& wdl) noexcept;
+// Returns: {ym.year(), ym.month(), wdl}.
+//
+// constexpr year_month_weekday_last
+//   operator/(const year& y, const month_weekday_last& mwdl) noexcept;
+// Returns: {y, mwdl.month(), mwdl.weekday_last()}.
+//
+// constexpr year_month_weekday_last
+//   operator/(int y, const month_weekday_last& mwdl) noexcept;
+// Returns: year(y) / mwdl.
+//
+// constexpr year_month_weekday_last
+//   operator/(const month_weekday_last& mwdl, const year& y) noexcept;
+// Returns: y / mwdl.
+//
+// constexpr year_month_weekday_last
+//   operator/(const month_weekday_last& mwdl, int y) noexcept;
+// Returns: year(y) / mwdl.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year_month         = std::chrono::year_month;
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_last       = std::chrono::weekday_last;
+    using month_weekday_last = std::chrono::month_weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month February = std::chrono::February;
+
+    { // operator/(const year_month& ym, const weekday_last& wdl) (and switched)
+        constexpr year_month Feb2018{year{2018}, February};
+
+        ASSERT_NOEXCEPT (                                  Feb2018/weekday_last{Tuesday});
+        ASSERT_SAME_TYPE(year_month_weekday_last, decltype(Feb2018/weekday_last{Tuesday}));
+
+        static_assert((Feb2018/weekday_last{Tuesday}).year()    == year{2018}, "");
+        static_assert((Feb2018/weekday_last{Tuesday}).month()   == February,   "");
+        static_assert((Feb2018/weekday_last{Tuesday}).weekday() == Tuesday,    "");
+
+        for (int i = 1000; i < 1010; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 6; ++k)
+                {
+                    year y{i};
+                    month m{j};
+                    weekday wd{k};
+                    year_month_weekday_last ymwdl = year_month{y,m}/weekday_last{wd};
+                    assert(ymwdl.year()    == y);
+                    assert(ymwdl.month()   == m);
+                    assert(ymwdl.weekday() == wd);
+                }
+    }
+
+
+    { // operator/(const year& y, const month_weekday_last& mwdl) (and switched)
+        constexpr month_weekday_last FebLastTues{February, weekday_last{Tuesday}};
+
+        ASSERT_NOEXCEPT (                                  year{2018}/FebLastTues);
+        ASSERT_SAME_TYPE(year_month_weekday_last, decltype(year{2018}/FebLastTues));
+        ASSERT_NOEXCEPT (                                  FebLastTues/year{2018});
+        ASSERT_SAME_TYPE(year_month_weekday_last, decltype(FebLastTues/year{2018}));
+
+
+        static_assert((year{2018}/FebLastTues).year()    == year{2018}, "");
+        static_assert((year{2018}/FebLastTues).month()   == February,   "");
+        static_assert((year{2018}/FebLastTues).weekday() == Tuesday,    "");
+        static_assert((FebLastTues/year{2018}).year()    == year{2018}, "");
+        static_assert((FebLastTues/year{2018}).month()   == February,   "");
+        static_assert((FebLastTues/year{2018}).weekday() == Tuesday,    "");
+
+
+        for (int i = 1000; i < 1010; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 6; ++k)
+                {
+                    year y{i};
+                    month m{j};
+                    weekday wd{k};
+                    year_month_weekday_last ymwdl1 = y/month_weekday_last{m, weekday_last{wd}};
+                    year_month_weekday_last ymwdl2 = month_weekday_last{m, weekday_last{wd}}/y;
+                    assert(ymwdl1.year()    == y);
+                    assert(ymwdl2.year()    == y);
+                    assert(ymwdl1.month()   == m);
+                    assert(ymwdl2.month()   == m);
+                    assert(ymwdl1.weekday() == wd);
+                    assert(ymwdl2.weekday() == wd);
+                    assert(ymwdl1 == ymwdl2);
+                }
+    }
+
+
+    { // operator/(int y, const month_weekday_last& mwdl) (and switched)
+        constexpr month_weekday_last FebLastTues{February, weekday_last{Tuesday}};
+
+        ASSERT_NOEXCEPT (                                  2018/FebLastTues);
+        ASSERT_SAME_TYPE(year_month_weekday_last, decltype(2018/FebLastTues));
+        ASSERT_NOEXCEPT (                                  FebLastTues/2018);
+        ASSERT_SAME_TYPE(year_month_weekday_last, decltype(FebLastTues/2018));
+
+
+        static_assert((2018/FebLastTues).year()    == year{2018}, "");
+        static_assert((2018/FebLastTues).month()   == February,   "");
+        static_assert((2018/FebLastTues).weekday() == Tuesday,    "");
+        static_assert((FebLastTues/2018).year()    == year{2018}, "");
+        static_assert((FebLastTues/2018).month()   == February,   "");
+        static_assert((FebLastTues/2018).weekday() == Tuesday,    "");
+
+
+        for (int i = 1000; i < 1010; ++i)
+            for (unsigned j = 1; j <= 12; ++j)
+                for (unsigned k = 0; k <= 6; ++k)
+                {
+                    year y{i};
+                    month m{j};
+                    weekday wd{k};
+                    year_month_weekday_last ymwdl1 = i/month_weekday_last{m, weekday_last{wd}};
+                    year_month_weekday_last ymwdl2 = month_weekday_last{m, weekday_last{wd}}/i;
+                    assert(ymwdl1.year()    == y);
+                    assert(ymwdl2.year()    == y);
+                    assert(ymwdl1.month()   == m);
+                    assert(ymwdl2.month()   == m);
+                    assert(ymwdl1.weekday() == wd);
+                    assert(ymwdl2.weekday() == wd);
+                    assert(ymwdl1 == ymwdl2);
+                }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/ctor.pass.cpp
new file mode 100644
index 0000000..20dd2b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/ctor.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_indexed;
+
+//                     weekday_indexed() = default;
+//  constexpr weekday_indexed(const chrono::weekday& wd, unsigned index) noexcept;
+//
+//  Effects: Constructs an object of type weekday_indexed by initializing wd_ with wd and index_ with index.
+//    The values held are unspecified if !wd.ok() or index is not in the range [1, 5].
+//
+//  constexpr chrono::weekday weekday() const noexcept;
+//  constexpr unsigned        index()   const noexcept;
+//  constexpr bool ok()                 const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday  = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    ASSERT_NOEXCEPT(weekday_indexed{});
+    ASSERT_NOEXCEPT(weekday_indexed(weekday{1}, 1));
+
+    constexpr weekday_indexed wdi0{};
+    static_assert( wdi0.weekday() == weekday{}, "");
+    static_assert( wdi0.index() == 0,           "");
+    static_assert(!wdi0.ok(),                   "");
+
+    constexpr weekday_indexed wdi1{std::chrono::Sunday, 2};
+    static_assert( wdi1.weekday() == std::chrono::Sunday, "");
+    static_assert( wdi1.index() == 2,                     "");
+    static_assert( wdi1.ok(),                             "");
+
+    for (unsigned i = 1; i <= 5; ++i)
+    {
+        weekday_indexed wdi(std::chrono::Tuesday, i);
+        assert( wdi.weekday() == std::chrono::Tuesday);
+        assert( wdi.index() == i);
+        assert( wdi.ok());
+    }
+
+    for (unsigned i = 6; i <= 20; ++i)
+    {
+        weekday_indexed wdi(std::chrono::Tuesday, i);
+        assert(!wdi.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/index.pass.cpp
new file mode 100644
index 0000000..cfcc214
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/index.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_indexed;
+
+// constexpr unsigned index() const noexcept;
+//  Returns: index_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    ASSERT_NOEXCEPT(                    std::declval<const weekday_indexed>().index());
+    ASSERT_SAME_TYPE(unsigned, decltype(std::declval<const weekday_indexed>().index()));
+
+    static_assert( weekday_indexed{}.index() == 0, "");
+
+    // This is the valid range of values defined in [time.cal.wdidx.members]/1.
+    for (unsigned i = 0; i <= 7; ++i)
+    {
+        weekday_indexed wdi(weekday{2}, i);
+        assert( static_cast<unsigned>(wdi.index()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/ok.pass.cpp
new file mode 100644
index 0000000..3c96412
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/ok.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_indexed;
+
+// constexpr bool ok() const noexcept;
+//  Returns: wd_.ok() && 1 <= index_ && index_ <= 5
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    ASSERT_NOEXCEPT(                std::declval<const weekday_indexed>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const weekday_indexed>().ok()));
+
+    static_assert(!weekday_indexed{}.ok(),                       "");
+    static_assert( weekday_indexed{std::chrono::Sunday, 2}.ok(), "");
+
+    assert(!(weekday_indexed(std::chrono::Tuesday, 0).ok()));
+    for (unsigned i = 1; i <= 5; ++i)
+    {
+        weekday_indexed wdi(std::chrono::Tuesday, i);
+        assert( wdi.ok());
+    }
+
+    for (unsigned i = 6; i <= 20; ++i)
+    {
+        weekday_indexed wdi(std::chrono::Tuesday, i);
+        assert(!wdi.ok());
+    }
+
+    //  Not a valid weekday
+    assert(!(weekday_indexed(weekday{9U}, 1).ok()));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/weekday.pass.cpp
new file mode 100644
index 0000000..1077e95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.members/weekday.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_indexed;
+
+// constexpr chrono::weekday weekday() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    ASSERT_NOEXCEPT(                                std::declval<const weekday_indexed>().weekday());
+    ASSERT_SAME_TYPE(std::chrono::weekday, decltype(std::declval<const weekday_indexed>().weekday()));
+
+    static_assert( weekday_indexed{}.weekday() == weekday{},                                   "");
+    static_assert( weekday_indexed{std::chrono::Tuesday, 0}.weekday() == std::chrono::Tuesday, "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+    {
+        weekday_indexed wdi(weekday{i}, 2);
+        assert( wdi.weekday().c_encoding() == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..95f409a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_indexed;
+
+// constexpr bool operator==(const weekday_indexed& x, const weekday_indexed& y) noexcept;
+//   Returns: x.weekday() == y.weekday() && x.index() == y.index().
+// constexpr bool operator!=(const weekday_indexed& x, const weekday_indexed& y) noexcept;
+//   Returns: !(x == y)
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using weekday         = std::chrono::weekday;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    AssertEqualityAreNoexcept<weekday_indexed>();
+    AssertEqualityReturnBool<weekday_indexed>();
+
+    static_assert( (weekday_indexed{} == weekday_indexed{}), "");
+    static_assert(!(weekday_indexed{} != weekday_indexed{}), "");
+
+    static_assert(!(weekday_indexed{} == weekday_indexed{std::chrono::Tuesday, 1}), "");
+    static_assert( (weekday_indexed{} != weekday_indexed{std::chrono::Tuesday, 1}), "");
+
+    //  Some 'ok' values as well
+    static_assert( (weekday_indexed{weekday{1}, 2} == weekday_indexed{weekday{1}, 2}), "");
+    static_assert(!(weekday_indexed{weekday{1}, 2} != weekday_indexed{weekday{1}, 2}), "");
+
+    static_assert(!(weekday_indexed{weekday{1}, 2} == weekday_indexed{weekday{1}, 1}), "");
+    static_assert( (weekday_indexed{weekday{1}, 2} != weekday_indexed{weekday{1}, 1}), "");
+    static_assert(!(weekday_indexed{weekday{1}, 2} == weekday_indexed{weekday{2}, 2}),  "");
+    static_assert( (weekday_indexed{weekday{1}, 2} != weekday_indexed{weekday{2}, 2}),  "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..7a59350
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/time.cal.wdidx.nonmembers/ostream.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+// class weekday_indexed;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const weekday_indexed& wdi);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::weekday_indexed wdi) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << wdi;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::weekday_indexed wdi) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << wdi;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::weekday_indexed wdi) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << wdi;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(0), 1}) == SV("Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(1), 2}) == SV("Mon[2]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(2), 3}) == SV("Tue[3]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(3), 4}) == SV("Wed[4]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(4), 5}) == SV("Thu[5]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(5), 0}) ==
+         SV("Fri[0 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(6), 6}) ==
+         SV("Sat[6 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(7), 7}) ==
+         SV("Sun[7 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(8), 0}) ==
+         SV("8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(255), 1}) ==
+         SV("255 is not a valid weekday[1]"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(0), 1}) == SV("Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(1), 2}) == SV("Lun[2]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(2), 3}) == SV("Mar[3]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(3), 4}) == SV("Mer[4]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(4), 5}) == SV("Jeu[5]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(5), 0}) ==
+         SV("Ven[0 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(6), 6}) ==
+         SV("Sam[6 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(7), 7}) ==
+         SV("Dim[7 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(255), 1}) ==
+         SV("255 is not a valid weekday[1]"));
+#else  // defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(0), 1}) == SV("dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(1), 2}) == SV("lun.[2]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(2), 3}) == SV("mar.[3]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(3), 4}) == SV("mer.[4]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(4), 5}) == SV("jeu.[5]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(5), 0}) ==
+         SV("ven.[0 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(6), 6}) ==
+         SV("sam.[6 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(7), 7}) ==
+         SV("dim.[7 is not a valid index]"));
+#endif // defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(8), 0}) ==
+         SV("8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(255), 1}) ==
+         SV("255 is not a valid weekday[1]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(0), 1}) == SV("日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(1), 2}) == SV("月[2]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(2), 3}) == SV("火[3]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(3), 4}) == SV("水[4]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(4), 5}) == SV("木[5]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(5), 0}) ==
+         SV("金[0 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(6), 6}) ==
+         SV("土[6 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(7), 7}) ==
+         SV("日[7 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(8), 0}) ==
+         SV("8 is not a valid weekday[0 is not a valid index]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_indexed{std::chrono::weekday(255), 1}) ==
+         SV("255 is not a valid weekday[1]"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/types.pass.cpp
new file mode 100644
index 0000000..08ec017
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdidx/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_indexed;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    static_assert(std::is_trivially_copyable_v<weekday_indexed>, "");
+    static_assert(std::is_standard_layout_v<weekday_indexed>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/ctor.pass.cpp
new file mode 100644
index 0000000..0562aaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/ctor.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_last;
+
+//  explicit constexpr weekday_last(const chrono::weekday& wd) noexcept;
+//
+//  Effects: Constructs an object of type weekday_last by initializing wd_ with wd.
+//
+//  constexpr chrono::weekday weekday() const noexcept;
+//  constexpr bool ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday      = std::chrono::weekday;
+    using weekday_last = std::chrono::weekday_last;
+
+    ASSERT_NOEXCEPT(weekday_last{weekday{}});
+
+    constexpr weekday_last wdl0{weekday{}};
+    static_assert( wdl0.weekday() == weekday{}, "");
+    static_assert( wdl0.ok(),                   "");
+
+    constexpr weekday_last wdl1 {weekday{1}};
+    static_assert( wdl1.weekday() == weekday{1}, "");
+    static_assert( wdl1.ok(),                    "");
+
+    for (unsigned i = 0; i <= 255; ++i)
+    {
+        weekday_last wdl{weekday{i}};
+        assert(wdl.weekday() == weekday{i});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/ok.pass.cpp
new file mode 100644
index 0000000..db02351
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/ok.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_last;
+
+//  constexpr bool ok() const noexcept;
+//  Returns: wd_.ok()
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday      = std::chrono::weekday;
+    using weekday_last = std::chrono::weekday_last;
+
+    ASSERT_NOEXCEPT(                std::declval<const weekday_last>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const weekday_last>().ok()));
+
+    static_assert( weekday_last{weekday{0}}.ok(), "");
+    static_assert( weekday_last{weekday{1}}.ok(), "");
+    static_assert(!weekday_last{weekday{8}}.ok(), "");
+
+    for (unsigned i = 0; i <= 255; ++i)
+        assert(weekday_last{weekday{i}}.ok() == weekday{i}.ok());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/weekday.pass.cpp
new file mode 100644
index 0000000..cdaddc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.members/weekday.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_last;
+
+//  constexpr chrono::weekday weekday() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday      = std::chrono::weekday;
+    using weekday_last = std::chrono::weekday_last;
+
+    ASSERT_NOEXCEPT(                   std::declval<const weekday_last>().weekday());
+    ASSERT_SAME_TYPE(weekday, decltype(std::declval<const weekday_last>().weekday()));
+
+    for (unsigned i = 0; i <= 255; ++i)
+        assert(weekday_last{weekday{i}}.weekday() == weekday{i});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..4845fa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_last;
+
+// constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
+// constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using weekday      = std::chrono::weekday;
+    using weekday_last = std::chrono::weekday_last;
+
+    AssertEqualityAreNoexcept<weekday_last>();
+    AssertEqualityReturnBool<weekday_last>();
+
+    static_assert(testEqualityValues<weekday_last>(weekday{0}, weekday{0}), "");
+    static_assert(testEqualityValues<weekday_last>(weekday{0}, weekday{1}), "");
+
+    //  Some 'ok' values as well
+    static_assert(testEqualityValues<weekday_last>(weekday{2}, weekday{2}), "");
+    static_assert(testEqualityValues<weekday_last>(weekday{2}, weekday{3}), "");
+
+    for (unsigned i = 0; i < 6; ++i)
+        for (unsigned j = 0; j < 6; ++j)
+            assert(testEqualityValues<weekday_last>(weekday{i}, weekday{j}));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..90dca78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/time.cal.wdlast.nonmembers/ostream.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+// class weekday_last;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const weekday_last& wdl);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::weekday_last wdl) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << wdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::weekday_last wdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << wdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::weekday_last wdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << wdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{0}}) == SV("Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{1}}) == SV("Mon[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{2}}) == SV("Tue[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{3}}) == SV("Wed[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{4}}) == SV("Thu[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{5}}) == SV("Fri[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{6}}) == SV("Sat[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{7}}) == SV("Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{8}}) ==
+         SV("8 is not a valid weekday[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{255}}) ==
+         SV("255 is not a valid weekday[last]"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{0}}) == SV("Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{1}}) == SV("Lun[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{2}}) == SV("Mar[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{3}}) == SV("Mer[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{4}}) == SV("Jeu[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{5}}) == SV("Ven[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{6}}) == SV("Sam[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{7}}) == SV("Dim[last]"));
+#else  // defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{0}}) == SV("dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{1}}) == SV("lun.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{2}}) == SV("mar.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{3}}) == SV("mer.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{4}}) == SV("jeu.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{5}}) == SV("ven.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{6}}) == SV("sam.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{7}}) == SV("dim.[last]"));
+#endif // defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{8}}) ==
+         SV("8 is not a valid weekday[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{255}}) ==
+         SV("255 is not a valid weekday[last]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{0}}) == SV("日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{1}}) == SV("月[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{2}}) == SV("火[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{3}}) == SV("水[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{4}}) == SV("木[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{5}}) == SV("金[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{6}}) == SV("土[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{7}}) == SV("日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{8}}) ==
+         SV("8 is not a valid weekday[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday_last{std::chrono::weekday{255}}) ==
+         SV("255 is not a valid weekday[last]"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/types.pass.cpp
new file mode 100644
index 0000000..8acb730
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.wdlast/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday_last;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday_last = std::chrono::weekday_last;
+
+    static_assert(std::is_trivially_copyable_v<weekday_last>, "");
+    static_assert(std::is_standard_layout_v<weekday_last>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/c_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/c_encoding.pass.cpp
new file mode 100644
index 0000000..6eb8063
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/c_encoding.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr unsigned c_encoding() const noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename WD>
+constexpr bool testConstexpr()
+{
+    WD wd{5};
+    return wd.c_encoding() == 5;
+}
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+
+    ASSERT_NOEXCEPT(                    std::declval<weekday&>().c_encoding());
+    ASSERT_SAME_TYPE(unsigned, decltype(std::declval<weekday&>().c_encoding()));
+
+    static_assert(testConstexpr<weekday>(), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        weekday wd(i);
+        assert(wd.c_encoding() == (i == 7 ? 0 : i));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.local_days.pass.cpp
new file mode 100644
index 0000000..b2127d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.local_days.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr weekday(const local_days& dp) noexcept;
+//
+//  Effects:  Constructs an object of type weekday by computing what day
+//              of the week  corresponds to the local_days dp, and representing
+//              that day of the week in wd_
+//
+//  Remarks: For any value ymd of type year_month_day for which ymd.ok() is true,
+//                ymd == year_month_day{sys_days{ymd}} is true.
+//
+// [Example:
+//  If dp represents 1970-01-01, the constructed weekday represents Thursday by storing 4 in wd_.
+// -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using local_days = std::chrono::local_days;
+    using days       = std::chrono::days;
+    using weekday    = std::chrono::weekday;
+
+    ASSERT_NOEXCEPT(weekday{std::declval<local_days>()});
+
+    {
+    constexpr local_days sd{}; // 1-Jan-1970 was a Thursday
+    constexpr weekday wd{sd};
+
+    static_assert( wd.ok(), "");
+    static_assert( wd.c_encoding() == 4, "");
+    }
+
+    {
+    constexpr local_days sd{days{10957+32}}; // 2-Feb-2000 was a Wednesday
+    constexpr weekday wd{sd};
+
+    static_assert( wd.ok(), "");
+    static_assert( wd.c_encoding() == 3, "");
+    }
+
+
+    {
+    constexpr local_days sd{days{-10957}}; // 2-Jan-1940 was a Tuesday
+    constexpr weekday wd{sd};
+
+    static_assert( wd.ok(), "");
+    static_assert( wd.c_encoding() == 2, "");
+    }
+
+    {
+    local_days sd{days{-(10957+34)}}; // 29-Nov-1939 was a Wednesday
+    weekday wd{sd};
+
+    assert( wd.ok());
+    assert( wd.c_encoding() == 3);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.pass.cpp
new file mode 100644
index 0000000..d59df23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//                     weekday() = default;
+//  explicit constexpr weekday(unsigned wd) noexcept;
+//  constexpr weekday(const sys_days& dp) noexcept;
+//  explicit constexpr weekday(const local_days& dp) noexcept;
+//
+//  unsigned c_encoding() const noexcept;
+
+//  Effects: Constructs an object of type weekday by initializing wd_ with wd == 7 ? 0 : wd
+//    The value held is unspecified if wd is not in the range [0, 255].
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+
+    ASSERT_NOEXCEPT(weekday{});
+    ASSERT_NOEXCEPT(weekday(1));
+    ASSERT_NOEXCEPT(weekday(1).c_encoding());
+
+    constexpr weekday m0{};
+    static_assert(m0.c_encoding() == 0, "");
+
+    constexpr weekday m1{1};
+    static_assert(m1.c_encoding() == 1, "");
+
+    for (unsigned i = 0; i <= 255; ++i)
+    {
+        weekday m(i);
+        assert(m.c_encoding() == (i == 7 ? 0 : i));
+    }
+
+    // TODO - sys_days and local_days ctor tests
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.sys_days.pass.cpp
new file mode 100644
index 0000000..d8777b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ctor.sys_days.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr weekday(const sys_days& dp) noexcept;
+//
+//  Effects:  Constructs an object of type weekday by computing what day
+//              of the week  corresponds to the sys_days dp, and representing
+//              that day of the week in wd_
+//
+//  Remarks: For any value ymd of type year_month_day for which ymd.ok() is true,
+//                ymd == year_month_day{sys_days{ymd}} is true.
+//
+// [Example:
+//  If dp represents 1970-01-01, the constructed weekday represents Thursday by storing 4 in wd_.
+// -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using sys_days  = std::chrono::sys_days;
+    using days      = std::chrono::days;
+    using weekday   = std::chrono::weekday;
+
+    ASSERT_NOEXCEPT(weekday{std::declval<sys_days>()});
+
+    {
+    constexpr sys_days sd{}; // 1-Jan-1970 was a Thursday
+    constexpr weekday wd{sd};
+
+    static_assert( wd.ok(), "");
+    static_assert( wd.c_encoding() == 4, "");
+    }
+
+    {
+    constexpr sys_days sd{days{10957+32}}; // 2-Feb-2000 was a Wednesday
+    constexpr weekday wd{sd};
+
+    static_assert( wd.ok(), "");
+    static_assert( wd.c_encoding() == 3, "");
+    }
+
+
+    {
+    constexpr sys_days sd{days{-10957}}; // 2-Jan-1940 was a Tuesday
+    constexpr weekday wd{sd};
+
+    static_assert( wd.ok(), "");
+    static_assert( wd.c_encoding() == 2, "");
+    }
+
+    {
+    sys_days sd{days{-(10957+34)}}; // 29-Nov-1939 was a Wednesday
+    weekday wd{sd};
+
+    assert( wd.ok());
+    assert( wd.c_encoding() == 3);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/decrement.pass.cpp
new file mode 100644
index 0000000..f24da11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/decrement.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr weekday& operator--() noexcept;
+//  constexpr weekday operator--(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../euclidian.h"
+
+template <typename WD>
+constexpr bool testConstexpr()
+{
+    WD wd{1};
+    if ((--wd).c_encoding() != 0) return false;
+    if ((wd--).c_encoding() != 0) return false;
+    if ((wd).c_encoding()   != 6) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+    ASSERT_NOEXCEPT(--(std::declval<weekday&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<weekday&>())--);
+
+    ASSERT_SAME_TYPE(weekday , decltype(  std::declval<weekday&>()--));
+    ASSERT_SAME_TYPE(weekday&, decltype(--std::declval<weekday&>()  ));
+
+    static_assert(testConstexpr<weekday>(), "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+    {
+        weekday wd(i);
+        assert(((--wd).c_encoding() == euclidian_subtraction<unsigned, 0, 6>(i, 1)));
+        assert(((wd--).c_encoding() == euclidian_subtraction<unsigned, 0, 6>(i, 1)));
+        assert(((wd)  .c_encoding() == euclidian_subtraction<unsigned, 0, 6>(i, 2)));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/increment.pass.cpp
new file mode 100644
index 0000000..3da4b86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/increment.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr weekday& operator++() noexcept;
+//  constexpr weekday operator++(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../euclidian.h"
+
+template <typename WD>
+constexpr bool testConstexpr()
+{
+    WD wd{5};
+    if ((++wd).c_encoding() != 6) return false;
+    if ((wd++).c_encoding() != 6) return false;
+    if ((wd)  .c_encoding() != 0) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+    ASSERT_NOEXCEPT(++(std::declval<weekday&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<weekday&>())++);
+
+    ASSERT_SAME_TYPE(weekday , decltype(  std::declval<weekday&>()++));
+    ASSERT_SAME_TYPE(weekday&, decltype(++std::declval<weekday&>()  ));
+
+    static_assert(testConstexpr<weekday>(), "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+    {
+        weekday wd(i);
+        assert(((++wd).c_encoding() == euclidian_addition<unsigned, 0, 6>(i, 1)));
+        assert(((wd++).c_encoding() == euclidian_addition<unsigned, 0, 6>(i, 1)));
+        assert(((wd)  .c_encoding() == euclidian_addition<unsigned, 0, 6>(i, 2)));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/iso_encoding.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/iso_encoding.pass.cpp
new file mode 100644
index 0000000..0e56a3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/iso_encoding.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr unsigned iso_encoding() const noexcept;
+//  Returns the underlying weekday, _except_ that returns '7' for Sunday (zero)
+//    See [time.cal.wd.members]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename WD>
+constexpr bool testConstexpr()
+{
+    WD wd{5};
+    return wd.c_encoding() == 5;
+}
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+
+    ASSERT_NOEXCEPT(                    std::declval<weekday&>().iso_encoding());
+    ASSERT_SAME_TYPE(unsigned, decltype(std::declval<weekday&>().iso_encoding()));
+
+    static_assert(testConstexpr<weekday>(), "");
+
+    //  This is different than all the other tests, because the '7' gets converted to
+    //  a zero in the constructor, but then back to '7' by iso_encoding().
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        weekday wd(i);
+        assert(wd.iso_encoding() == (i == 0 ? 7 : i));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ok.pass.cpp
new file mode 100644
index 0000000..106f38f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/ok.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//  constexpr bool ok() const noexcept;
+//  Returns: wd_ <= 6
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+
+    ASSERT_NOEXCEPT(                std::declval<const weekday>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const weekday>().ok()));
+
+    static_assert( weekday{0}.ok(), "");
+    static_assert( weekday{1}.ok(), "");
+    static_assert( weekday{7}.ok(), "");  // 7 is transmogrified into 0 in the ctor
+    static_assert(!weekday{8}.ok(), "");
+
+    for (unsigned i = 0; i <= 7; ++i)
+        assert(weekday{i}.ok());
+    for (unsigned i = 8; i <= 255; ++i)
+        assert(!weekday{i}.ok());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/operator[].pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/operator[].pass.cpp
new file mode 100644
index 0000000..290e39b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/operator[].pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+//   constexpr weekday_indexed operator[](unsigned index) const noexcept;
+//   constexpr weekday_last    operator[](last_spec)      const noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../euclidian.h"
+
+int main(int, char**)
+{
+    using weekday         = std::chrono::weekday;
+    using weekday_last    = std::chrono::weekday_last;
+    using weekday_indexed = std::chrono::weekday_indexed;
+
+    constexpr weekday Sunday = std::chrono::Sunday;
+
+    ASSERT_NOEXCEPT(                           std::declval<weekday>()[1U]);
+    ASSERT_SAME_TYPE(weekday_indexed, decltype(std::declval<weekday>()[1U]));
+
+    ASSERT_NOEXCEPT(                           std::declval<weekday>()[std::chrono::last]);
+    ASSERT_SAME_TYPE(weekday_last,    decltype(std::declval<weekday>()[std::chrono::last]));
+
+    static_assert(Sunday[2].weekday() == Sunday, "");
+    static_assert(Sunday[2].index  () == 2, "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+    {
+        weekday wd(i);
+        weekday_last wdl = wd[std::chrono::last];
+        assert(wdl.weekday() == wd);
+        assert(wdl.ok());
+    }
+
+    for (unsigned i = 0; i <= 6; ++i)
+        for (unsigned j = 1; j <= 5; ++j)
+    {
+        weekday wd(i);
+        weekday_indexed wdi = wd[j];
+        assert(wdi.weekday() == wd);
+        assert(wdi.index() == j);
+        assert(wdi.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/plus_minus_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/plus_minus_equal.pass.cpp
new file mode 100644
index 0000000..a280084
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.members/plus_minus_equal.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+// constexpr weekday& operator+=(const days& d) noexcept;
+// constexpr weekday& operator-=(const days& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../euclidian.h"
+
+template <typename M, typename Ms>
+constexpr bool testConstexpr()
+{
+    M m1{1};
+    if ((m1 += Ms{ 1}).c_encoding() !=  2) return false;
+    if ((m1 += Ms{ 2}).c_encoding() !=  4) return false;
+    if ((m1 += Ms{ 4}).c_encoding() !=  1) return false;
+    if ((m1 -= Ms{ 1}).c_encoding() !=  0) return false;
+    if ((m1 -= Ms{ 2}).c_encoding() !=  5) return false;
+    if ((m1 -= Ms{ 4}).c_encoding() !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+    using days    = std::chrono::days;
+
+    ASSERT_NOEXCEPT(                    std::declval<weekday&>() += std::declval<days&>());
+    ASSERT_SAME_TYPE(weekday&, decltype(std::declval<weekday&>() += std::declval<days&>()));
+
+    ASSERT_NOEXCEPT(                    std::declval<weekday&>() -= std::declval<days&>());
+    ASSERT_SAME_TYPE(weekday&, decltype(std::declval<weekday&>() -= std::declval<days&>()));
+
+    static_assert(testConstexpr<weekday, days>(), "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+    {
+        weekday wd(i);
+        assert(((wd += days{3}).c_encoding() == euclidian_addition<unsigned, 0, 6>(i, 3)));
+        assert(((wd)           .c_encoding() == euclidian_addition<unsigned, 0, 6>(i, 3)));
+    }
+
+    for (unsigned i = 0; i <= 6; ++i)
+    {
+        weekday wd(i);
+        assert(((wd -= days{4}).c_encoding() == euclidian_subtraction<unsigned, 0, 6>(i, 4)));
+        assert(((wd)           .c_encoding() == euclidian_subtraction<unsigned, 0, 6>(i, 4)));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..33d8cd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+// constexpr bool operator==(const weekday& x, const weekday& y) noexcept;
+// constexpr bool operator!=(const weekday& x, const weekday& y) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+
+    AssertEqualityAreNoexcept<weekday>();
+    AssertEqualityReturnBool<weekday>();
+
+    static_assert(testEqualityValues<weekday>(0U ,0U), "");
+    static_assert(testEqualityValues<weekday>(0U, 1U), "");
+
+    //  Some 'ok' values as well
+    static_assert(testEqualityValues<weekday>(5U, 5U), "");
+    static_assert(testEqualityValues<weekday>(5U, 2U), "");
+
+    for (unsigned i = 0; i < 6; ++i)
+        for (unsigned j = 0; j < 6; ++j)
+            assert(testEqualityValues<weekday>(i, j));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/literals.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/literals.pass.cpp
new file mode 100644
index 0000000..1754b2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/literals.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// inline constexpr weekday   Sunday{0};
+// inline constexpr weekday   Monday{1};
+// inline constexpr weekday   Tuesday{2};
+// inline constexpr weekday   Wednesday{3};
+// inline constexpr weekday   Thursday{4};
+// inline constexpr weekday   Friday{5};
+// inline constexpr weekday   Saturday{6};
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Sunday));
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Monday));
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Tuesday));
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Wednesday));
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Thursday));
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Friday));
+    ASSERT_SAME_TYPE(const std::chrono::weekday, decltype(std::chrono::Saturday));
+
+    static_assert( std::chrono::Sunday    == std::chrono::weekday(0),  "");
+    static_assert( std::chrono::Monday    == std::chrono::weekday(1),  "");
+    static_assert( std::chrono::Tuesday   == std::chrono::weekday(2),  "");
+    static_assert( std::chrono::Wednesday == std::chrono::weekday(3),  "");
+    static_assert( std::chrono::Thursday  == std::chrono::weekday(4),  "");
+    static_assert( std::chrono::Friday    == std::chrono::weekday(5),  "");
+    static_assert( std::chrono::Saturday  == std::chrono::weekday(6),  "");
+
+    assert(std::chrono::Sunday    == std::chrono::weekday(0));
+    assert(std::chrono::Monday    == std::chrono::weekday(1));
+    assert(std::chrono::Tuesday   == std::chrono::weekday(2));
+    assert(std::chrono::Wednesday == std::chrono::weekday(3));
+    assert(std::chrono::Thursday  == std::chrono::weekday(4));
+    assert(std::chrono::Friday    == std::chrono::weekday(5));
+    assert(std::chrono::Saturday  == std::chrono::weekday(6));
+
+    assert(std::chrono::Sunday.c_encoding()    ==  0);
+    assert(std::chrono::Monday.c_encoding()    ==  1);
+    assert(std::chrono::Tuesday.c_encoding()   ==  2);
+    assert(std::chrono::Wednesday.c_encoding() ==  3);
+    assert(std::chrono::Thursday.c_encoding()  ==  4);
+    assert(std::chrono::Friday.c_encoding()    ==  5);
+    assert(std::chrono::Saturday.c_encoding()  ==  6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..0daf37b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/minus.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+// constexpr weekday operator-(const weekday& x, const days& y) noexcept;
+//   Returns: x + -y.
+//
+// constexpr days operator-(const weekday& x, const weekday& y) noexcept;
+// Returns: If x.ok() == true and y.ok() == true, returns a value d in the range
+//    [days{0}, days{6}] satisfying y + d == x.
+// Otherwise the value returned is unspecified.
+// [Example: Sunday - Monday == days{6}. -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../euclidian.h"
+
+template <typename WD, typename Ds>
+constexpr bool testConstexpr()
+{
+    {
+    WD wd{5};
+    Ds offset{3};
+    assert(wd - offset == WD{2});
+    assert(wd - WD{2} == offset);
+    }
+
+    //  Check the example
+    assert(WD{0} - WD{1} == Ds{6});
+
+    return true;
+}
+
+int main(int, char**)
+{
+    using weekday  = std::chrono::weekday;
+    using days     = std::chrono::days;
+
+    ASSERT_NOEXCEPT(                   std::declval<weekday>() - std::declval<days>());
+    ASSERT_SAME_TYPE(weekday, decltype(std::declval<weekday>() - std::declval<days>()));
+
+    ASSERT_NOEXCEPT(                   std::declval<weekday>() - std::declval<weekday>());
+    ASSERT_SAME_TYPE(days,    decltype(std::declval<weekday>() - std::declval<weekday>()));
+
+    static_assert(testConstexpr<weekday, days>(), "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+        for (unsigned j = 0; j <= 6; ++j)
+        {
+            weekday wd = weekday{i} - days{j};
+            assert(wd + days{j} == weekday{i});
+            assert((wd.c_encoding() == euclidian_subtraction<unsigned, 0, 6>(i, j)));
+        }
+
+    for (unsigned i = 0; i <= 6; ++i)
+        for (unsigned j = 0; j <= 6; ++j)
+        {
+            days d = weekday{j} - weekday{i};
+            assert(weekday{i} + d == weekday{j});
+        }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..b52293b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/ostream.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+// class weekday;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const weekday& wd);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::weekday weekday) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << weekday;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::weekday weekday) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << weekday;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::weekday weekday) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << weekday;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::weekday(0)) == SV("Sun"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(1)) == SV("Mon"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(2)) == SV("Tue"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(3)) == SV("Wed"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(4)) == SV("Thu"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(5)) == SV("Fri"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(6)) == SV("Sat"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(7)) == SV("Sun"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(8)) == SV("8 is not a valid weekday"));
+  assert(stream_c_locale<CharT>(std::chrono::weekday(255)) == SV("255 is not a valid weekday"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(0)) == SV("Dim"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(1)) == SV("Lun"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(2)) == SV("Mar"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(3)) == SV("Mer"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(4)) == SV("Jeu"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(5)) == SV("Ven"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(6)) == SV("Sam"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(7)) == SV("Dim"));
+#else
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(0)) == SV("dim."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(1)) == SV("lun."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(2)) == SV("mar."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(3)) == SV("mer."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(4)) == SV("jeu."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(5)) == SV("ven."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(6)) == SV("sam."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(7)) == SV("dim."));
+#endif
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(8)) == SV("8 is not a valid weekday"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::weekday(255)) == SV("255 is not a valid weekday"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(0)) == SV("日"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(1)) == SV("月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(2)) == SV("火"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(3)) == SV("水"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(4)) == SV("木"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(5)) == SV("金"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(6)) == SV("土"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(7)) == SV("日"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(8)) == SV("8 is not a valid weekday"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::weekday(255)) == SV("255 is not a valid weekday"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..4820d51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/time.cal.weekday.nonmembers/plus.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+// constexpr weekday operator+(const days& x, const weekday& y) noexcept;
+//   Returns: weekday(int{x} + y.count()).
+//
+// constexpr weekday operator+(const weekday& x, const days& y) noexcept;
+//   Returns:
+//      weekday{modulo(static_cast<long long>(unsigned{x}) + y.count(), 7)}
+//   where modulo(n, 7) computes the remainder of n divided by 7 using Euclidean division.
+//   [Note: Given a divisor of 12, Euclidean division truncates towards negative infinity
+//   and always produces a remainder in the range of [0, 6].
+//   Assuming no overflow in the signed summation, this operation results in a weekday
+//   holding a value in the range [0, 6] even if !x.ok(). -end note]
+//   [Example: Monday + days{6} == Sunday. -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../euclidian.h"
+
+template <typename M, typename Ms>
+constexpr bool testConstexpr()
+{
+    M m{1};
+    Ms offset{4};
+    assert(m + offset == M{5});
+    assert(offset + m == M{5});
+    //  Check the example
+    assert(M{1} + Ms{6} == M{0});
+    return true;
+}
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+    using days    = std::chrono::days;
+
+    ASSERT_NOEXCEPT(                   std::declval<weekday>() + std::declval<days>());
+    ASSERT_SAME_TYPE(weekday, decltype(std::declval<weekday>() + std::declval<days>()));
+
+    ASSERT_NOEXCEPT(                   std::declval<days>() + std::declval<weekday>());
+    ASSERT_SAME_TYPE(weekday, decltype(std::declval<days>() + std::declval<weekday>()));
+
+    static_assert(testConstexpr<weekday, days>(), "");
+
+    for (unsigned i = 0; i <= 6; ++i)
+        for (unsigned j = 0; j <= 6; ++j)
+        {
+            weekday wd1 = weekday{i} + days{j};
+            weekday wd2 = days{j} + weekday{i};
+            assert(wd1 == wd2);
+            assert((wd1.c_encoding() == euclidian_addition<unsigned, 0, 6>(i, j)));
+            assert((wd2.c_encoding() == euclidian_addition<unsigned, 0, 6>(i, j)));
+        }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/types.pass.cpp
new file mode 100644
index 0000000..dba7d56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.weekday/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class weekday;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using weekday = std::chrono::weekday;
+
+    static_assert(std::is_trivially_copyable_v<weekday>, "");
+    static_assert(std::is_standard_layout_v<weekday>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/ctor.pass.cpp
new file mode 100644
index 0000000..b32325a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+//                     year() = default;
+//  explicit constexpr year(int m) noexcept;
+//  explicit constexpr operator int() const noexcept;
+
+//  Effects: Constructs an object of type year by initializing y_ with y.
+//    The value held is unspecified if d is not in the range [0, 255].
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year = std::chrono::year;
+
+    ASSERT_NOEXCEPT(year{});
+    ASSERT_NOEXCEPT(year(0U));
+    ASSERT_NOEXCEPT(static_cast<int>(year(0U)));
+
+    constexpr year y0{};
+    static_assert(static_cast<int>(y0) == 0, "");
+
+    constexpr year y1{1};
+    static_assert(static_cast<int>(y1) == 1, "");
+
+    for (int i = 0; i <= 2550; i += 7)
+    {
+        year yr(i);
+        assert(static_cast<int>(yr) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/decrement.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/decrement.pass.cpp
new file mode 100644
index 0000000..1857a38
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/decrement.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+//  constexpr year& operator--() noexcept;
+//  constexpr year operator--(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Y>
+constexpr bool testConstexpr()
+{
+    Y y1{10};
+    if (static_cast<int>(--y1) != 9) return false;
+    if (static_cast<int>(y1--) != 9) return false;
+    if (static_cast<int>(y1)   != 8) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year = std::chrono::year;
+    ASSERT_NOEXCEPT(--(std::declval<year&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<year&>())--);
+
+    ASSERT_SAME_TYPE(year , decltype(  std::declval<year&>()--));
+    ASSERT_SAME_TYPE(year&, decltype(--std::declval<year&>()  ));
+
+    static_assert(testConstexpr<year>(), "");
+
+    for (int i = 11000; i <= 11020; ++i)
+    {
+        year yr(i);
+        assert(static_cast<int>(--yr) == i - 1);
+        assert(static_cast<int>(yr--) == i - 1);
+        assert(static_cast<int>(yr)   == i - 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/increment.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/increment.pass.cpp
new file mode 100644
index 0000000..9407683
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/increment.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+//  constexpr year& operator++() noexcept;
+//  constexpr year operator++(int) noexcept;
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Y>
+constexpr bool testConstexpr()
+{
+    Y y1{10};
+    if (static_cast<int>(++y1) != 11) return false;
+    if (static_cast<int>(y1++) != 11) return false;
+    if (static_cast<int>(y1)   != 12) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year = std::chrono::year;
+    ASSERT_NOEXCEPT(++(std::declval<year&>())  );
+    ASSERT_NOEXCEPT(  (std::declval<year&>())++);
+
+    ASSERT_SAME_TYPE(year , decltype(  std::declval<year&>()++));
+    ASSERT_SAME_TYPE(year&, decltype(++std::declval<year&>()  ));
+
+    static_assert(testConstexpr<year>(), "");
+
+    for (int i = 11000; i <= 11020; ++i)
+    {
+        year yr(i);
+        assert(static_cast<int>(++yr) == i + 1);
+        assert(static_cast<int>(yr++) == i + 1);
+        assert(static_cast<int>(yr)   == i + 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/is_leap.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/is_leap.pass.cpp
new file mode 100644
index 0000000..32ebbad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/is_leap.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr bool is_leap() const noexcept;
+//  y_ % 4 == 0 && (y_ % 100 != 0 || y_ % 400 == 0)
+//
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year = std::chrono::year;
+
+    ASSERT_NOEXCEPT(                year(1).is_leap());
+    ASSERT_SAME_TYPE(bool, decltype(year(1).is_leap()));
+
+    static_assert(!year{1}.is_leap(), "");
+    static_assert(!year{2}.is_leap(), "");
+    static_assert(!year{3}.is_leap(), "");
+    static_assert( year{4}.is_leap(), "");
+
+    assert( year{-2000}.is_leap());
+    assert( year{ -400}.is_leap());
+    assert(!year{ -300}.is_leap());
+    assert(!year{ -200}.is_leap());
+
+    assert(!year{  200}.is_leap());
+    assert(!year{  300}.is_leap());
+    assert( year{  400}.is_leap());
+    assert(!year{ 1997}.is_leap());
+    assert(!year{ 1998}.is_leap());
+    assert(!year{ 1999}.is_leap());
+    assert( year{ 2000}.is_leap());
+    assert(!year{ 2001}.is_leap());
+    assert(!year{ 2002}.is_leap());
+    assert(!year{ 2003}.is_leap());
+    assert( year{ 2004}.is_leap());
+    assert(!year{ 2100}.is_leap());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/ok.pass.cpp
new file mode 100644
index 0000000..57e5ed0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/ok.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr bool ok() const noexcept;
+//  Returns: min() <= y_ && y_ <= max().
+//
+//  static constexpr year min() noexcept;
+//   Returns year{ 32767};
+//  static constexpr year max() noexcept;
+//   Returns year{-32767};
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year = std::chrono::year;
+
+    ASSERT_NOEXCEPT(                std::declval<const year>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const year>().ok()));
+
+    ASSERT_NOEXCEPT(                year::max());
+    ASSERT_SAME_TYPE(year, decltype(year::max()));
+
+    ASSERT_NOEXCEPT(                year::min());
+    ASSERT_SAME_TYPE(year, decltype(year::min()));
+
+    static_assert(static_cast<int>(year::min()) == -32767, "");
+    static_assert(static_cast<int>(year::max()) ==  32767, "");
+
+    assert(year{-20001}.ok());
+    assert(year{ -2000}.ok());
+    assert(year{    -1}.ok());
+    assert(year{     0}.ok());
+    assert(year{     1}.ok());
+    assert(year{  2000}.ok());
+    assert(year{ 20001}.ok());
+
+    static_assert(!year{-32768}.ok(), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus.pass.cpp
new file mode 100644
index 0000000..f351083
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr year operator+() const noexcept;
+// constexpr year operator-() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Y>
+constexpr bool testConstexpr()
+{
+    Y y1{1};
+    if (static_cast<int>(+y1) !=  1) return false;
+    if (static_cast<int>(-y1) != -1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year  = std::chrono::year;
+
+    ASSERT_NOEXCEPT(+std::declval<year>());
+    ASSERT_NOEXCEPT(-std::declval<year>());
+
+    ASSERT_SAME_TYPE(year, decltype(+std::declval<year>()));
+    ASSERT_SAME_TYPE(year, decltype(-std::declval<year>()));
+
+    static_assert(testConstexpr<year>(), "");
+
+    for (int i = 10000; i <= 10020; ++i)
+    {
+        year yr(i);
+        assert(static_cast<int>(+yr) ==  i);
+        assert(static_cast<int>(-yr) == -i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus_equal.pass.cpp
new file mode 100644
index 0000000..f323631
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/plus_minus_equal.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr year& operator+=(const years& d) noexcept;
+// constexpr year& operator-=(const years& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Y, typename Ys>
+constexpr bool testConstexpr()
+{
+    Y y1{1};
+    if (static_cast<int>(y1 += Ys{ 1}) !=  2) return false;
+    if (static_cast<int>(y1 += Ys{ 2}) !=  4) return false;
+    if (static_cast<int>(y1 += Ys{ 8}) != 12) return false;
+    if (static_cast<int>(y1 -= Ys{ 1}) != 11) return false;
+    if (static_cast<int>(y1 -= Ys{ 2}) !=  9) return false;
+    if (static_cast<int>(y1 -= Ys{ 8}) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year  = std::chrono::year;
+    using years = std::chrono::years;
+
+    ASSERT_NOEXCEPT(std::declval<year&>() += std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<year&>() -= std::declval<years>());
+
+    ASSERT_SAME_TYPE(year&, decltype(std::declval<year&>() += std::declval<years>()));
+    ASSERT_SAME_TYPE(year&, decltype(std::declval<year&>() -= std::declval<years>()));
+
+    static_assert(testConstexpr<year, years>(), "");
+
+    for (int i = 10000; i <= 10020; ++i)
+    {
+        year yr(i);
+        assert(static_cast<int>(yr += years{10}) == i + 10);
+        assert(static_cast<int>(yr)              == i + 10);
+        assert(static_cast<int>(yr -= years{ 9}) == i +  1);
+        assert(static_cast<int>(yr)              == i +  1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..497cc3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr bool operator==(const year& x, const year& y) noexcept;
+// constexpr strong_ordering operator<=>(const year& x, const year& y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+constexpr bool test() {
+  using year = std::chrono::year;
+
+  // Validate valid value. The range [-32768, 32767] is guaranteed to be allowed.
+  assert(testOrderValues<year>(-32768, -32768));
+  assert(testOrderValues<year>(-32768, -32767));
+  // Largest positive
+  assert(testOrderValues<year>(32767, 32766));
+  assert(testOrderValues<year>(32767, 32767));
+
+  // Validate some valid values.
+  for (int i = 1; i < 10; ++i)
+    for (int j = 1; j < 10; ++j)
+      assert(testOrderValues<year>(i, j));
+
+  return true;
+}
+
+int main(int, char**) {
+  using year = std::chrono::year;
+  AssertOrderAreNoexcept<year>();
+  AssertOrderReturn<std::strong_ordering, year>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.fail.cpp
new file mode 100644
index 0000000..7475202
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr year operator""y(unsigned long long y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::chrono::year;
+    year d1 = 1234y; // expected-error-re {{no matching literal operator for call to 'operator""y' {{.*}}}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
new file mode 100644
index 0000000..8d597cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr year operator""y(unsigned long long y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    using namespace std::chrono;
+    ASSERT_NOEXCEPT(4y);
+
+    static_assert( 2017y == year(2017), "");
+    year y1 = 2018y;
+    assert (y1 == year(2018));
+    }
+
+    {
+    using namespace std::literals;
+    ASSERT_NOEXCEPT(4d);
+
+    static_assert( 2017y == std::chrono::year(2017), "");
+
+    std::chrono::year y1 = 2020y;
+    assert (y1 == std::chrono::year(2020));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..e15228b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/minus.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr year operator-(const year& x, const years& y) noexcept;
+//   Returns: x + -y.
+//
+// constexpr years operator-(const year& x, const year& y) noexcept;
+//   Returns: If x.ok() == true and y.ok() == true, returns a value m in the range
+//   [years{0}, years{11}] satisfying y + m == x.
+//   Otherwise the value returned is unspecified.
+//   [Example: January - February == years{11}. -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Y, typename Ys>
+constexpr bool testConstexpr()
+{
+    Y y{2313};
+    Ys offset{1006};
+    if (y - offset != Y{1307}) return false;
+    if (y - Y{1307} != offset) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year  = std::chrono::year;
+    using years = std::chrono::years;
+
+    ASSERT_NOEXCEPT(                 std::declval<year>() - std::declval<years>());
+    ASSERT_SAME_TYPE(year , decltype(std::declval<year>() - std::declval<years>()));
+
+    ASSERT_NOEXCEPT(                 std::declval<year>() - std::declval<year>());
+    ASSERT_SAME_TYPE(years, decltype(std::declval<year>() - std::declval<year>()));
+
+    static_assert(testConstexpr<year, years>(), "");
+
+    year y{1223};
+    for (int i = 1100; i <= 1110; ++i)
+    {
+        year  y1 = y - years{i};
+        years ys1 = y - year{i};
+        assert(static_cast<int>(y1) == 1223 - i);
+        assert(ys1.count()          == 1223 - i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..c979fc2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/ostream.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+// class year;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const year& year);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::year year) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << year;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::year year) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << year;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::year year) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << year;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::year{-32'768}) == SV("-32768 is not a valid year"));
+  assert(stream_c_locale<CharT>(std::chrono::year{-32'767}) == SV("-32767"));
+  assert(stream_c_locale<CharT>(std::chrono::year{0}) == SV("0000"));
+  assert(stream_c_locale<CharT>(std::chrono::year{1970}) == SV("1970"));
+  assert(stream_c_locale<CharT>(std::chrono::year{32'767}) == SV("32767"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year{-32'768}) == SV("-32768 is not a valid year"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year{-32'767}) == SV("-32767"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year{0}) == SV("0000"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year{1970}) == SV("1970"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year{32'767}) == SV("32767"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year{-32'768}) == SV("-32768 is not a valid year"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year{-32'767}) == SV("-32767"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year{0}) == SV("0000"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year{1970}) == SV("1970"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year{32'767}) == SV("32767"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..d34f27f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.nonmembers/plus.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+// constexpr year operator+(const year& x, const years& y) noexcept;
+//   Returns: year(int{x} + y.count()).
+//
+// constexpr year operator+(const years& x, const year& y) noexcept;
+//   Returns: y + x
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename Y, typename Ys>
+constexpr bool testConstexpr()
+{
+    Y y{1001};
+    Ys offset{23};
+    if (y + offset != Y{1024}) return false;
+    if (offset + y != Y{1024}) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year  = std::chrono::year;
+    using years = std::chrono::years;
+
+    ASSERT_NOEXCEPT(                std::declval<year>() + std::declval<years>());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<year>() + std::declval<years>()));
+
+    ASSERT_NOEXCEPT(                std::declval<years>() + std::declval<year>());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<years>() + std::declval<year>()));
+
+    static_assert(testConstexpr<year, years>(), "");
+
+    year y{1223};
+    for (int i = 1100; i <= 1110; ++i)
+    {
+        year y1 = y + years{i};
+        year y2 = years{i} + y;
+        assert(y1 == y2);
+        assert(static_cast<int>(y1) == i + 1223);
+        assert(static_cast<int>(y2) == i + 1223);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/types.pass.cpp
new file mode 100644
index 0000000..6253357
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.year/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year = std::chrono::year;
+
+    static_assert(std::is_trivially_copyable_v<year>, "");
+    static_assert(std::is_standard_layout_v<year>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/ctor.pass.cpp
new file mode 100644
index 0000000..d104671
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/ctor.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+//            year_month() = default;
+//  constexpr year_month(const chrono::year& y, const chrono::month& m) noexcept;
+//
+//  Effects:  Constructs an object of type year_month by initializing y_ with y, and m_ with m.
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year       = std::chrono::year;
+    using month      = std::chrono::month;
+    using year_month = std::chrono::year_month;
+
+    ASSERT_NOEXCEPT(year_month{});
+    ASSERT_NOEXCEPT(year_month{year{1}, month{1}});
+
+    constexpr year_month ym0{};
+    static_assert( ym0.year()  == year{},  "");
+    static_assert( ym0.month() == month{}, "");
+    static_assert(!ym0.ok(),               "");
+
+    constexpr year_month ym1{year{2018}, std::chrono::January};
+    static_assert( ym1.year()  == year{2018},           "");
+    static_assert( ym1.month() == std::chrono::January, "");
+    static_assert( ym1.ok(),                            "");
+
+    constexpr year_month ym2{year{2018}, month{}};
+    static_assert( ym2.year()  == year{2018}, "");
+    static_assert( ym2.month() == month{},    "");
+    static_assert(!ym2.ok(),                  "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/month.pass.cpp
new file mode 100644
index 0000000..9f31818
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/month.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year       = std::chrono::year;
+    using month      = std::chrono::month;
+    using year_month = std::chrono::year_month;
+
+    ASSERT_NOEXCEPT(                 std::declval<const year_month>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const year_month>().month()));
+
+    static_assert( year_month{}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month ym(year{1234}, month{i});
+        assert( static_cast<unsigned>(ym.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/ok.pass.cpp
new file mode 100644
index 0000000..2893af0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/ok.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr bool ok() const noexcept;
+//  Returns: m_.ok() && y_.ok().
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using month      = std::chrono::month;
+    using year       = std::chrono::year;
+    using year_month = std::chrono::year_month;
+
+    constexpr month January = std::chrono::January;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month>().ok()));
+
+    static_assert(!year_month{year{-32768}, January}.ok(), ""); // Bad year
+    static_assert(!year_month{year{2019},   month{}}.ok(), ""); // Bad month
+    static_assert( year_month{year{2019},   January}.ok(), ""); // Both OK
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month ym{year{2019}, month{i}};
+        assert( ym.ok() == month{i}.ok());
+    }
+
+    const int ymax = static_cast<int>(year::max());
+    for (int i = ymax - 100; i <= ymax + 100; ++i)
+    {
+        year_month ym{year{i}, January};
+        assert( ym.ok() == year{i}.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_month.pass.cpp
new file mode 100644
index 0000000..cc203de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_month.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr year_month& operator+=(const months& d) noexcept;
+// constexpr year_month& operator-=(const months& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<unsigned>((d1          ).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 1}).month()) !=  2) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 2}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 += Ds{12}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 1}).month()) !=  3) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 2}).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 -= Ds{12}).month()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using month      = std::chrono::month;
+    using months     = std::chrono::months;
+    using year       = std::chrono::year;
+    using year_month = std::chrono::year_month;
+
+    ASSERT_NOEXCEPT(                       std::declval<year_month&>() += std::declval<months>());
+    ASSERT_SAME_TYPE(year_month&, decltype(std::declval<year_month&>() += std::declval<months>()));
+
+    ASSERT_NOEXCEPT(                       std::declval<year_month&>() -= std::declval<months>());
+    ASSERT_SAME_TYPE(year_month&, decltype(std::declval<year_month&>() -= std::declval<months>()));
+
+    static_assert(testConstexpr<year_month, months>(year_month{year{1234}, month{1}}), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        year y{1234};
+        year_month ym(y, month{i});
+        assert(static_cast<unsigned>((ym += months{2}).month()) == i + 2);
+        assert(ym.year() == y);
+        assert(static_cast<unsigned>((ym             ).month()) == i + 2);
+        assert(ym.year() == y);
+        assert(static_cast<unsigned>((ym -= months{1}).month()) == i + 1);
+        assert(ym.year() == y);
+        assert(static_cast<unsigned>((ym             ).month()) == i + 1);
+        assert(ym.year() == y);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_year.pass.cpp
new file mode 100644
index 0000000..cfe52e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/plus_minus_equal_year.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr year_month& operator+=(const years& d) noexcept;
+// constexpr year_month& operator-=(const years& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<int>((d1          ).year()) !=  1) return false;
+    if (static_cast<int>((d1 += Ds{ 1}).year()) !=  2) return false;
+    if (static_cast<int>((d1 += Ds{ 2}).year()) !=  4) return false;
+    if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false;
+    if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false;
+    if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false;
+    if (static_cast<int>((d1 -= Ds{12}).year()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using month      = std::chrono::month;
+    using year       = std::chrono::year;
+    using years      = std::chrono::years;
+    using year_month = std::chrono::year_month;
+
+
+    ASSERT_NOEXCEPT(                       std::declval<year_month&>() += std::declval<years>());
+    ASSERT_SAME_TYPE(year_month&, decltype(std::declval<year_month&>() += std::declval<years>()));
+
+    ASSERT_NOEXCEPT(                       std::declval<year_month&>() -= std::declval<years>());
+    ASSERT_SAME_TYPE(year_month&, decltype(std::declval<year_month&>() -= std::declval<years>()));
+
+    static_assert(testConstexpr<year_month, years>(year_month{year{1}, month{1}}), "");
+
+    for (int i = 1000; i <= 1010; ++i)
+    {
+        month m{2};
+        year_month ym(year{i}, m);
+        assert(static_cast<int>((ym += years{2}).year()) == i + 2);
+        assert(ym.month() == m);
+        assert(static_cast<int>((ym            ).year()) == i + 2);
+        assert(ym.month() == m);
+        assert(static_cast<int>((ym -= years{1}).year()) == i + 1);
+        assert(ym.month() == m);
+        assert(static_cast<int>((ym            ).year()) == i + 1);
+        assert(ym.month() == m);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/year.pass.cpp
new file mode 100644
index 0000000..b09de64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.members/year.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: d_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year       = std::chrono::year;
+    using month      = std::chrono::month;
+    using year_month = std::chrono::year_month;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month>().year());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month>().year()));
+
+    static_assert( year_month{}.year() == year{}, "");
+
+    for (int i = 1; i <= 50; ++i)
+    {
+        year_month ym(year{i}, month{});
+        assert( static_cast<int>(ym.year()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..cafdfc9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr bool operator==(const year_month& x, const year_month& y) noexcept;
+// constexpr strong_order operator<=>(const year_month& x, const year_month& y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+constexpr bool test() {
+  using year       = std::chrono::year;
+  using month      = std::chrono::month;
+  using year_month = std::chrono::year_month;
+
+  assert(testOrder(
+      year_month{year{1234}, std::chrono::January},
+      year_month{year{1234}, std::chrono::January},
+      std::strong_ordering::equal));
+
+  assert(testOrder(
+      year_month{year{1234}, std::chrono::January},
+      year_month{year{1234}, std::chrono::February},
+      std::strong_ordering::less));
+
+  assert(testOrder(
+      year_month{year{1234}, std::chrono::January},
+      year_month{year{1235}, std::chrono::January},
+      std::strong_ordering::less));
+
+  //  same year, different months
+  for (unsigned i = 1; i < 12; ++i)
+    for (unsigned j = 1; j < 12; ++j)
+      assert((testOrder(
+          year_month{year{1234}, month{i}},
+          year_month{year{1234}, month{j}},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  //  same month, different years
+  for (int i = -5; i < 5; ++i)
+    for (int j = -5; j < 5; ++j)
+      assert((testOrder(
+          year_month{year{i}, std::chrono::January},
+          year_month{year{j}, std::chrono::January},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  return true;
+}
+
+int main(int, char**) {
+  using year_month = std::chrono::year_month;
+  AssertOrderAreNoexcept<year_month>();
+  AssertOrderReturn<std::strong_ordering, year_month>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..3c58ed0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/minus.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr year_month operator-(const year_month& ym, const years& dy) noexcept;
+// Returns: ym + -dy.
+//
+// constexpr year_month operator-(const year_month& ym, const months& dm) noexcept;
+// Returns: ym + -dm.
+//
+// constexpr months operator-(const year_month& x, const year_month& y) noexcept;
+// Returns: x.year() - y.year() + months{static_cast<int>(unsigned{x.month()}) -
+//                                       static_cast<int>(unsigned{y.month()})}
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year       = std::chrono::year;
+    using years      = std::chrono::years;
+    using month      = std::chrono::month;
+    using months     = std::chrono::months;
+    using year_month = std::chrono::year_month;
+
+    {   // year_month - years
+    ASSERT_NOEXCEPT(                      std::declval<year_month>() - std::declval<years>());
+    ASSERT_SAME_TYPE(year_month, decltype(std::declval<year_month>() - std::declval<years>()));
+
+    // static_assert(testConstexprYears (year_month{year{1}, month{1}}), "");
+
+    year_month ym{year{1234}, std::chrono::January};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month ym1 = ym - years{i};
+        assert(static_cast<int>(ym1.year()) == 1234 - i);
+        assert(ym1.month() == std::chrono::January);
+    }
+    }
+
+    {   // year_month - months
+    ASSERT_NOEXCEPT(                      std::declval<year_month>() - std::declval<months>());
+    ASSERT_SAME_TYPE(year_month, decltype(std::declval<year_month>() - std::declval<months>()));
+
+    // static_assert(testConstexprMonths(year_month{year{1}, month{1}}), "");
+
+    year_month ym{year{1234}, std::chrono::November};
+    for (int i = 0; i <= 10; ++i)  // TODO test wrap-around
+    {
+        year_month ym1 = ym - months{i};
+        assert(static_cast<int>(ym1.year()) == 1234);
+        assert(ym1.month() == month(11 - i));
+    }
+    }
+
+    {   // year_month - year_month
+    ASSERT_NOEXCEPT(                  std::declval<year_month>() - std::declval<year_month>());
+    ASSERT_SAME_TYPE(months, decltype(std::declval<year_month>() - std::declval<year_month>()));
+
+    // static_assert(testConstexprMonths(year_month{year{1}, month{1}}), "");
+
+    //  Same year
+    year y{2345};
+    for (int i = 1; i <= 12; ++i)
+        for (int j = 1; j <= 12; ++j)
+    {
+        months diff = year_month{y, month(i)} - year_month{y, month(j)};
+        assert(diff.count() == i - j);
+    }
+
+    // TODO: different year
+
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..13257cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/ostream.pass.cpp
@@ -0,0 +1,251 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class year_month;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const year_month& ym);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::year_month ym) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << ym;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::year_month ym) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << ym;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::year_month ym) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << ym;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{0}}) ==
+         SV("-32768 is not a valid year/0 is not a valid month"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{1}}) ==
+         SV("-32768 is not a valid year/Jan"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'767}, std::chrono::month{2}}) ==
+         SV("-32767/Feb"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{3}}) ==
+         SV("0000/Mar"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/Apr"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{32'767}, std::chrono::month{5}}) ==
+         SV("32767/May"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{6}}) ==
+         SV("0000/Jun"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{7}}) ==
+         SV("0000/Jul"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{8}}) ==
+         SV("0000/Aug"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{9}}) ==
+         SV("0000/Sep"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{10}}) ==
+         SV("0000/Oct"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{11}}) ==
+         SV("0000/Nov"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{12}}) ==
+         SV("0000/Dec"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{13}}) ==
+         SV("0000/13 is not a valid month"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{255}}) ==
+         SV("-32768 is not a valid year/255 is not a valid month"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{0}}) ==
+         SV("-32768 is not a valid year/0 is not a valid month"));
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{1}}) ==
+         SV("-32768 is not a valid year/jan"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'767}, std::chrono::month{2}}) ==
+         SV("-32767/fév"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{3}}) ==
+         SV("0000/mar"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/avr"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{32'767}, std::chrono::month{5}}) ==
+         SV("32767/mai"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{6}}) ==
+         SV("0000/jui"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{7}}) ==
+         SV("0000/jul"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{8}}) ==
+         SV("0000/aoû"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{9}}) ==
+         SV("0000/sep"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{10}}) ==
+         SV("0000/oct"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{11}}) ==
+         SV("0000/nov"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{12}}) ==
+         SV("0000/déc"));
+#else    //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{1}}) ==
+         SV("-32768 is not a valid year/janv."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'767}, std::chrono::month{2}}) ==
+         SV("-32767/févr."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{3}}) ==
+         SV("0000/mars"));
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/avr."));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/avril"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{32'767}, std::chrono::month{5}}) ==
+         SV("32767/mai"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{6}}) ==
+         SV("0000/juin"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{7}}) ==
+         SV("0000/juil."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{8}}) ==
+         SV("0000/août"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{9}}) ==
+         SV("0000/sept."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{10}}) ==
+         SV("0000/oct."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{11}}) ==
+         SV("0000/nov."));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{12}}) ==
+         SV("0000/déc."));
+#endif   //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{13}}) ==
+         SV("0000/13 is not a valid month"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{255}}) ==
+         SV("-32768 is not a valid year/255 is not a valid month"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{0}}) ==
+         SV("-32768 is not a valid year/0 is not a valid month"));
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{1}}) ==
+         SV("-32768 is not a valid year/ 1"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'767}, std::chrono::month{2}}) ==
+         SV("-32767/ 2"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{3}}) ==
+         SV("0000/ 3"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/ 4"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{32'767}, std::chrono::month{5}}) ==
+         SV("32767/ 5"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{6}}) ==
+         SV("0000/ 6"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{7}}) ==
+         SV("0000/ 7"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{8}}) ==
+         SV("0000/ 8"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{9}}) ==
+         SV("0000/ 9"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{10}}) ==
+         SV("0000/10"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{11}}) ==
+         SV("0000/11"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{12}}) ==
+         SV("0000/12"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{1}}) ==
+         SV("-32768 is not a valid year/1月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'767}, std::chrono::month{2}}) ==
+         SV("-32767/2月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{3}}) ==
+         SV("0000/3月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/4月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{32'767}, std::chrono::month{5}}) ==
+         SV("32767/5月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{6}}) ==
+         SV("0000/6月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{7}}) ==
+         SV("0000/7月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{8}}) ==
+         SV("0000/8月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{9}}) ==
+         SV("0000/9月"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{1}}) ==
+         SV("-32768 is not a valid year/ 1月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'767}, std::chrono::month{2}}) ==
+         SV("-32767/ 2月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{3}}) ==
+         SV("0000/ 3月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{4}}) ==
+         SV("1970/ 4月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{32'767}, std::chrono::month{5}}) ==
+         SV("32767/ 5月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{6}}) ==
+         SV("0000/ 6月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{7}}) ==
+         SV("0000/ 7月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{8}}) ==
+         SV("0000/ 8月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{9}}) ==
+         SV("0000/ 9月"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{10}}) ==
+         SV("0000/10月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{11}}) ==
+         SV("0000/11月"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{12}}) ==
+         SV("0000/12月"));
+#endif   // defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{0}, std::chrono::month{13}}) ==
+         SV("0000/13 is not a valid month"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month{std::chrono::year{-32'768}, std::chrono::month{255}}) ==
+         SV("-32768 is not a valid year/255 is not a valid month"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..315d74b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/time.cal.ym.nonmembers/plus.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+// constexpr year_month operator+(const year_month& ym, const years& dy) noexcept;
+// Returns: (ym.year() + dy) / ym.month().
+//
+// constexpr year_month operator+(const years& dy, const year_month& ym) noexcept;
+// Returns: ym + dy.
+//
+// constexpr year_month operator+(const year_month& ym, const months& dm) noexcept;
+// Returns: A year_month value z such that z.ok() && z - ym == dm is true.
+// Complexity: O(1) with respect to the value of dm.
+//
+// constexpr year_month operator+(const months& dm, const year_month& ym) noexcept;
+// Returns: ym + dm.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using year = std::chrono::year;
+using years = std::chrono::years;
+using month = std::chrono::month;
+using months = std::chrono::months;
+using year_month = std::chrono::year_month;
+
+// year_month + years
+constexpr bool test_ym_plus_y() {
+  ASSERT_NOEXCEPT(std::declval<year_month>() + std::declval<years>());
+  ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month>());
+
+  ASSERT_SAME_TYPE(
+      year_month, decltype(std::declval<year_month>() + std::declval<years>()));
+  ASSERT_SAME_TYPE(
+      year_month, decltype(std::declval<years>() + std::declval<year_month>()));
+
+  year_month ym{year{1234}, std::chrono::January};
+  for (int i = 0; i <= 10; ++i) {
+    year_month ym1 = ym + years{i};
+    year_month ym2 = years{i} + ym;
+    assert(static_cast<int>(ym1.year()) == i + 1234);
+    assert(static_cast<int>(ym2.year()) == i + 1234);
+    assert(ym1.month() == std::chrono::January);
+    assert(ym2.month() == std::chrono::January);
+    assert(ym1 == ym2);
+  }
+
+  return true;
+}
+
+// year_month + months
+constexpr bool test_ym_plus_m() {
+  ASSERT_NOEXCEPT(std::declval<year_month>() + std::declval<months>());
+  ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month>());
+
+  ASSERT_SAME_TYPE(year_month, decltype(std::declval<year_month>() +
+                                        std::declval<months>()));
+  ASSERT_SAME_TYPE(year_month, decltype(std::declval<months>() +
+                                        std::declval<year_month>()));
+
+  year_month ym{year{1234}, std::chrono::January};
+  for (int i = 0; i <= 11; ++i) {
+    year_month ym1 = ym + months{i};
+    year_month ym2 = months{i} + ym;
+    assert(static_cast<int>(ym1.year()) == 1234);
+    assert(static_cast<int>(ym2.year()) == 1234);
+    assert(ym1.month() == month(1 + i));
+    assert(ym2.month() == month(1 + i));
+    assert(ym1 == ym2);
+  }
+
+  for (int i = 12; i < 23; ++i) {
+    year_month ym1 = ym + months{i};
+    year_month ym2 = months{i} + ym;
+    assert(static_cast<int>(ym1.year()) == 1235);
+    assert(static_cast<int>(ym2.year()) == 1235);
+    assert(ym1.month() == month(1 + i % 12));
+    assert(ym2.month() == month(1 + i % 12));
+    assert(ym1 == ym2);
+  }
+
+  return true;
+}
+
+constexpr bool test() {
+  test_ym_plus_y();
+  test_ym_plus_m();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/types.pass.cpp
new file mode 100644
index 0000000..81ba836
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ym/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year_month = std::chrono::year_month;
+
+    static_assert(std::is_trivially_copyable_v<year_month>, "");
+    static_assert(std::is_standard_layout_v<year_month>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.local_days.pass.cpp
new file mode 100644
index 0000000..f9de631
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.local_days.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+//  explicit constexpr year_month_day(const local_days& dp) noexcept;
+//
+//
+//  Effects:  Constructs an object of type year_month_day that corresponds
+//                to the date represented by dp
+//
+//  Remarks: Equivalent to constructing with sys_days{dp.time_since_epoch()}.
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr chrono::day     day() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using day            = std::chrono::day;
+    using local_days     = std::chrono::local_days;
+    using days           = std::chrono::days;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(year_month_day{std::declval<local_days>()});
+
+    {
+    constexpr local_days sd{};
+    constexpr year_month_day ymd{sd};
+
+    static_assert( ymd.ok(),                            "");
+    static_assert( ymd.year()  == year{1970},           "");
+    static_assert( ymd.month() == std::chrono::January, "");
+    static_assert( ymd.day()   == day{1},               "");
+    }
+
+    {
+    constexpr local_days sd{days{10957+32}};
+    constexpr year_month_day ymd{sd};
+
+    static_assert( ymd.ok(),                             "");
+    static_assert( ymd.year()  == year{2000},            "");
+    static_assert( ymd.month() == std::chrono::February, "");
+    static_assert( ymd.day()   == day{2},                "");
+    }
+
+
+//  There's one more leap day between 1/1/40 and 1/1/70
+//  when compared to 1/1/70 -> 1/1/2000
+    {
+    constexpr local_days sd{days{-10957}};
+    constexpr year_month_day ymd{sd};
+
+    static_assert( ymd.ok(),                            "");
+    static_assert( ymd.year()  == year{1940},           "");
+    static_assert( ymd.month() == std::chrono::January, "");
+    static_assert( ymd.day()   == day{2},               "");
+    }
+
+    {
+    local_days sd{days{-(10957+34)}};
+    year_month_day ymd{sd};
+
+    assert( ymd.ok());
+    assert( ymd.year()  == year{1939});
+    assert( ymd.month() == std::chrono::November);
+    assert( ymd.day()   == day{29});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.pass.cpp
new file mode 100644
index 0000000..82dfa65
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+//  year_month_day() = default;
+//  constexpr year_month_day(const chrono::year& y, const chrono::month& m,
+//                                   const chrono::day& d) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_day by initializing
+//                y_ with y, m_ with m, and d_ with d.
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr chrono::day     day() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(year_month_day{});
+    ASSERT_NOEXCEPT(year_month_day{year{1}, month{1}, day{1}});
+
+    constexpr month January = std::chrono::January;
+
+    constexpr year_month_day ym0{};
+    static_assert( ym0.year()  == year{},  "");
+    static_assert( ym0.month() == month{}, "");
+    static_assert( ym0.day()   == day{},   "");
+    static_assert(!ym0.ok(),               "");
+
+    constexpr year_month_day ym1{year{2019}, January, day{12}};
+    static_assert( ym1.year()  == year{2019}, "");
+    static_assert( ym1.month() == January,    "");
+    static_assert( ym1.day()   == day{12},    "");
+    static_assert( ym1.ok(),                  "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.sys_days.pass.cpp
new file mode 100644
index 0000000..b0d963a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.sys_days.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+//  constexpr year_month_day(const sys_days& dp) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_day that corresponds
+//                to the date represented by dp.
+//
+//  Remarks: For any value ymd of type year_month_day for which ymd.ok() is true,
+//                ymd == year_month_day{sys_days{ymd}} is true.
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using day            = std::chrono::day;
+    using sys_days       = std::chrono::sys_days;
+    using days           = std::chrono::days;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(year_month_day{std::declval<sys_days>()});
+
+    {
+    constexpr sys_days sd{};
+    constexpr year_month_day ymd{sd};
+
+    static_assert( ymd.ok(),                            "");
+    static_assert( ymd.year()  == year{1970},           "");
+    static_assert( ymd.month() == std::chrono::January, "");
+    static_assert( ymd.day()   == day{1},               "");
+    }
+
+    {
+    constexpr sys_days sd{days{10957+32}};
+    constexpr year_month_day ymd{sd};
+
+    static_assert( ymd.ok(),                             "");
+    static_assert( ymd.year()  == year{2000},            "");
+    static_assert( ymd.month() == std::chrono::February, "");
+    static_assert( ymd.day()   == day{2},                "");
+    }
+
+
+    //  There's one more leap day between 1/1/40 and 1/1/70
+    //  when compared to 1/1/70 -> 1/1/2000
+    {
+    constexpr sys_days sd{days{-10957}};
+    constexpr year_month_day ymd{sd};
+
+    static_assert( ymd.ok(),                            "");
+    static_assert( ymd.year()  == year{1940},           "");
+    static_assert( ymd.month() == std::chrono::January, "");
+    static_assert( ymd.day()   == day{2},               "");
+    }
+
+    {
+    sys_days sd{days{-(10957+34)}};
+    year_month_day ymd{sd};
+
+    assert( ymd.ok());
+    assert( ymd.year()  == year{1939});
+    assert( ymd.month() == std::chrono::November);
+    assert( ymd.day()   == day{29});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.year_month_day_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.year_month_day_last.pass.cpp
new file mode 100644
index 0000000..4c3875b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ctor.year_month_day_last.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+//  constexpr year_month_day(const year_month_day_last& ymdl) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_day by initializing
+//              y_ with ymdl.year(), m_ with ymdl.month(), and d_ with ymdl.day().
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr chrono::day     day() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using day                 = std::chrono::day;
+    using month_day_last = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using year_month_day      = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(year_month_day{std::declval<const year_month_day_last>()});
+
+    {
+    constexpr year_month_day_last ymdl{year{2019}, month_day_last{month{1}}};
+    constexpr year_month_day ymd{ymdl};
+
+    static_assert( ymd.year()  == year{2019}, "");
+    static_assert( ymd.month() == month{1},   "");
+    static_assert( ymd.day()   == day{31},    "");
+    static_assert( ymd.ok(),                  "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{1970}, month_day_last{month{4}}};
+    constexpr year_month_day ymd{ymdl};
+
+    static_assert( ymd.year()  == year{1970}, "");
+    static_assert( ymd.month() == month{4},   "");
+    static_assert( ymd.day()   == day{30},    "");
+    static_assert( ymd.ok(),                  "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{2000}, month_day_last{month{2}}};
+    constexpr year_month_day ymd{ymdl};
+
+    static_assert( ymd.year()  == year{2000}, "");
+    static_assert( ymd.month() == month{2},   "");
+    static_assert( ymd.day()   == day{29},    "");
+    static_assert( ymd.ok(),                  "");
+    }
+
+    { // Feb 1900 was NOT a leap year.
+    year_month_day_last ymdl{year{1900}, month_day_last{month{2}}};
+    year_month_day ymd{ymdl};
+
+    assert( ymd.year()  == year{1900});
+    assert( ymd.month() == month{2});
+    assert( ymd.day()   == day{28});
+    assert( ymd.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/day.pass.cpp
new file mode 100644
index 0000000..6e4ac63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/day.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(               std::declval<const year_month_day>().day());
+    ASSERT_SAME_TYPE(day, decltype(std::declval<const year_month_day>().day()));
+
+    static_assert( year_month_day{}.day() == day{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_day ymd(year{1234}, month{2}, day{i});
+        assert( static_cast<unsigned>(ymd.day()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/month.pass.cpp
new file mode 100644
index 0000000..75855da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/month.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(                 std::declval<const year_month_day>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const year_month_day>().month()));
+
+    static_assert( year_month_day{}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_day ymd(year{1234}, month{i}, day{12});
+        assert( static_cast<unsigned>(ymd.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ok.pass.cpp
new file mode 100644
index 0000000..8d38a6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/ok.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr bool ok() const noexcept;
+//  Returns: m_.ok() && y_.ok().
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+
+    constexpr month January = std::chrono::January;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_day>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month_day>().ok()));
+
+    static_assert(!year_month_day{year{-32768}, month{}, day{}}.ok(), ""); // All three bad
+
+    static_assert(!year_month_day{year{-32768}, January, day{1}}.ok(), ""); // Bad year
+    static_assert(!year_month_day{year{2019},   month{}, day{1}}.ok(), ""); // Bad month
+    static_assert(!year_month_day{year{2019},   January, day{} }.ok(), ""); // Bad day
+
+    static_assert(!year_month_day{year{-32768}, month{}, day{1}}.ok(), ""); // Bad year & month
+    static_assert(!year_month_day{year{2019},   month{}, day{} }.ok(), ""); // Bad month & day
+    static_assert(!year_month_day{year{-32768}, January, day{} }.ok(), ""); // Bad year & day
+
+    static_assert( year_month_day{year{2019},   January, day{1}}.ok(), ""); // All OK
+
+    // Some months have a 31st
+    static_assert( year_month_day{year{2020},   month{ 1}, day{31}}.ok(), "");
+    static_assert(!year_month_day{year{2020},   month{ 2}, day{31}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 3}, day{31}}.ok(), "");
+    static_assert(!year_month_day{year{2020},   month{ 4}, day{31}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 5}, day{31}}.ok(), "");
+    static_assert(!year_month_day{year{2020},   month{ 6}, day{31}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 7}, day{31}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 8}, day{31}}.ok(), "");
+    static_assert(!year_month_day{year{2020},   month{ 9}, day{31}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{10}, day{31}}.ok(), "");
+    static_assert(!year_month_day{year{2020},   month{11}, day{31}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{12}, day{31}}.ok(), "");
+
+    // Everyone except FEB has a 30th
+    static_assert( year_month_day{year{2020},   month{ 1}, day{30}}.ok(), "");
+    static_assert(!year_month_day{year{2020},   month{ 2}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 3}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 4}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 5}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 6}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 7}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 8}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{ 9}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{10}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{11}, day{30}}.ok(), "");
+    static_assert( year_month_day{year{2020},   month{12}, day{30}}.ok(), "");
+
+    static_assert(!year_month_day{year{2019},   std::chrono::February, day{29}}.ok(), ""); // Not a leap year
+    static_assert( year_month_day{year{2020},   std::chrono::February, day{29}}.ok(), ""); // Ok; 2020 is a leap year
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_day ym{year{2019}, January, day{i}};
+        assert( ym.ok() == day{i}.ok());
+    }
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_day ym{year{2019}, month{i}, day{12}};
+        assert( ym.ok() == month{i}.ok());
+    }
+
+    const int ymax = static_cast<int>(year::max());
+    for (int i = ymax - 100; i <= ymax + 100; ++i)
+    {
+        year_month_day ym{year{i}, January, day{12}};
+        assert( ym.ok() == year{i}.ok());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/op.local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/op.local_days.pass.cpp
new file mode 100644
index 0000000..cc882d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/op.local_days.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr operator local_days() const noexcept;
+//
+// Returns: If ok(), returns a local_days holding a count of days from the
+//   local_days epoch to *this (a negative value if *this represents a date
+//   prior to the sys_days epoch). Otherwise, if y_.ok() && m_.ok() is true,
+//   returns a sys_days which is offset from sys_days{y_/m_/last} by the
+//   number of days d_ is offset from sys_days{y_/m_/last}.day(). Otherwise
+//   the value returned is unspecified.
+//
+// Remarks: A local_days in the range [days{-12687428}, days{11248737}] which
+//   is converted to a year_month_day shall have the same value when
+//   converted back to a sys_days.
+//
+// [Example:
+//   static_assert(year_month_day{local_days{2017y/January/0}}  == 2016y/December/31);
+//   static_assert(year_month_day{local_days{2017y/January/31}} == 2017y/January/31);
+//   static_assert(year_month_day{local_days{2017y/January/32}} == 2017y/February/1);
+// -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+void RunTheExample()
+{
+    using namespace std::chrono;
+
+    static_assert(year_month_day{local_days{year{2017}/January/0}}  == year{2016}/December/31);
+    static_assert(year_month_day{local_days{year{2017}/January/31}} == year{2017}/January/31);
+    static_assert(year_month_day{local_days{year{2017}/January/32}} == year{2017}/February/1);
+}
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using local_days       = std::chrono::local_days;
+    using days           = std::chrono::days;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(local_days(std::declval<year_month_day>()));
+    RunTheExample();
+
+    {
+    constexpr year_month_day ymd{year{1970}, month{1}, day{1}};
+    constexpr local_days sd{ymd};
+
+    static_assert( sd.time_since_epoch() == days{0}, "");
+    static_assert( year_month_day{sd} == ymd, ""); // and back
+    }
+
+    {
+    constexpr year_month_day ymd{year{2000}, month{2}, day{2}};
+    constexpr local_days sd{ymd};
+
+    static_assert( sd.time_since_epoch() == days{10957+32}, "");
+    static_assert( year_month_day{sd} == ymd, ""); // and back
+    }
+
+    // There's one more leap day between 1/1/40 and 1/1/70
+    // when compared to 1/1/70 -> 1/1/2000
+    {
+    constexpr year_month_day ymd{year{1940}, month{1}, day{2}};
+    constexpr local_days sd{ymd};
+
+    static_assert( sd.time_since_epoch() == days{-10957}, "");
+    static_assert( year_month_day{sd} == ymd, ""); // and back
+    }
+
+    {
+    year_month_day ymd{year{1939}, month{11}, day{29}};
+    local_days sd{ymd};
+
+    assert( sd.time_since_epoch() == days{-(10957+34)});
+    assert( year_month_day{sd} == ymd); // and back
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/op.sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/op.sys_days.pass.cpp
new file mode 100644
index 0000000..ec252ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/op.sys_days.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr operator sys_days() const noexcept;
+//
+// Returns: If ok(), returns a sys_days holding a count of days from the
+//   sys_days epoch to *this (a negative value if *this represents a date
+//   prior to the sys_days epoch). Otherwise, if y_.ok() && m_.ok() is true,
+//   returns a sys_days which is offset from sys_days{y_/m_/last} by the
+//   number of days d_ is offset from sys_days{y_/m_/last}.day(). Otherwise
+//   the value returned is unspecified.
+//
+// Remarks: A sys_days in the range [days{-12687428}, days{11248737}] which
+//   is converted to a year_month_day shall have the same value when
+//   converted back to a sys_days.
+//
+// [Example:
+//   static_assert(year_month_day{sys_days{2017y/January/0}}  == 2016y/December/31);
+//   static_assert(year_month_day{sys_days{2017y/January/31}} == 2017y/January/31);
+//   static_assert(year_month_day{sys_days{2017y/January/32}} == 2017y/February/1);
+// -end example]
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+void RunTheExample()
+{
+    using namespace std::chrono;
+
+    static_assert(year_month_day{sys_days{year{2017}/January/0}}  == year{2016}/December/31);
+    static_assert(year_month_day{sys_days{year{2017}/January/31}} == year{2017}/January/31);
+    static_assert(year_month_day{sys_days{year{2017}/January/32}} == year{2017}/February/1);
+}
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using sys_days       = std::chrono::sys_days;
+    using days           = std::chrono::days;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(sys_days(std::declval<year_month_day>()));
+    RunTheExample();
+
+    {
+    constexpr year_month_day ymd{year{1970}, month{1}, day{1}};
+    constexpr sys_days sd{ymd};
+
+    static_assert( sd.time_since_epoch() == days{0}, "");
+    static_assert( year_month_day{sd} == ymd, ""); // and back
+    }
+
+    {
+    constexpr year_month_day ymd{year{2000}, month{2}, day{2}};
+    constexpr sys_days sd{ymd};
+
+    static_assert( sd.time_since_epoch() == days{10957+32}, "");
+    static_assert( year_month_day{sd} == ymd, ""); // and back
+    }
+
+    // There's one more leap day between 1/1/40 and 1/1/70
+    // when compared to 1/1/70 -> 1/1/2000
+    {
+    constexpr year_month_day ymd{year{1940}, month{1}, day{2}};
+    constexpr sys_days sd{ymd};
+
+    static_assert( sd.time_since_epoch() == days{-10957}, "");
+    static_assert( year_month_day{sd} == ymd, ""); // and back
+    }
+
+    {
+    year_month_day ymd{year{1939}, month{11}, day{29}};
+    sys_days sd{ymd};
+
+    assert( sd.time_since_epoch() == days{-(10957+34)});
+    assert( year_month_day{sd} == ymd); // and back
+    }
+
+    // These two tests check the wording for LWG 3206
+    {
+    constexpr year_month_day ymd{year{1971}, month{1}, day{0}}; // bad day
+    static_assert(!ymd.ok(),         "");
+    static_assert( ymd.year().ok(),  "");
+    static_assert( ymd.month().ok(), "");
+    static_assert(!ymd.day().ok(),   "");
+    constexpr sys_days sd{ymd};
+    static_assert(sd.time_since_epoch() == days{364}, "");
+    static_assert(sd == sys_days{ymd.year()/ymd.month()/day{1}} + (ymd.day() - day{1}), "");
+    }
+
+    {
+    constexpr year_month_day ymd{year{1970}, month{12}, day{32}}; // bad day
+    static_assert(!ymd.ok(),         "");
+    static_assert( ymd.year().ok(),  "");
+    static_assert( ymd.month().ok(), "");
+    static_assert(!ymd.day().ok(),   "");
+    constexpr sys_days sd{ymd};
+    static_assert(sd.time_since_epoch() == days{365}, "");
+    static_assert(sd == sys_days{ymd.year()/ymd.month()/day{1}} + (ymd.day() - day{1}), "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_month.pass.cpp
new file mode 100644
index 0000000..08bc8b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_month.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr year_month_day& operator+=(const months& m) noexcept;
+// constexpr year_month_day& operator-=(const months& m) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<unsigned>((d1          ).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 1}).month()) !=  2) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 2}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 += Ds{12}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 1}).month()) !=  3) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 2}).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 -= Ds{12}).month()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+    using months         = std::chrono::months;
+
+    ASSERT_NOEXCEPT(std::declval<year_month_day&>() += std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<year_month_day&>() -= std::declval<months>());
+
+    ASSERT_SAME_TYPE(year_month_day&, decltype(std::declval<year_month_day&>() += std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_day&, decltype(std::declval<year_month_day&>() -= std::declval<months>()));
+
+    static_assert(testConstexpr<year_month_day, months>(year_month_day{year{1234}, month{1}, day{1}}), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        year y{1234};
+        day   d{23};
+        year_month_day ym(y, month{i}, d);
+        assert(static_cast<unsigned>((ym += months{2}).month()) == i + 2);
+        assert(ym.year() == y);
+        assert(ym.day()  == d);
+        assert(static_cast<unsigned>((ym             ).month()) == i + 2);
+        assert(ym.year() == y);
+        assert(ym.day()  == d);
+        assert(static_cast<unsigned>((ym -= months{1}).month()) == i + 1);
+        assert(ym.year() == y);
+        assert(ym.day()  == d);
+        assert(static_cast<unsigned>((ym             ).month()) == i + 1);
+        assert(ym.year() == y);
+        assert(ym.day()  == d);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_year.pass.cpp
new file mode 100644
index 0000000..d70fda9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/plus_minus_equal_year.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr year_month_day& operator+=(const years& d) noexcept;
+// constexpr year_month_day& operator-=(const years& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<int>((d1          ).year()) !=  1) return false;
+    if (static_cast<int>((d1 += Ds{ 1}).year()) !=  2) return false;
+    if (static_cast<int>((d1 += Ds{ 2}).year()) !=  4) return false;
+    if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false;
+    if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false;
+    if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false;
+    if (static_cast<int>((d1 -= Ds{12}).year()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+    using years          = std::chrono::years;
+
+    ASSERT_NOEXCEPT(std::declval<year_month_day&>() += std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<year_month_day&>() -= std::declval<years>());
+
+    ASSERT_SAME_TYPE(year_month_day&, decltype(std::declval<year_month_day&>() += std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_day&, decltype(std::declval<year_month_day&>() -= std::declval<years>()));
+
+    static_assert(testConstexpr<year_month_day, years>(year_month_day{year{1}, month{1}, day{1}}), "");
+
+    for (int i = 1000; i <= 1010; ++i)
+    {
+        month m{2};
+        day   d{23};
+        year_month_day ym(year{i}, m, d);
+        assert(static_cast<int>((ym += years{2}).year()) == i + 2);
+        assert(ym.month() == m);
+        assert(ym.day()   == d);
+        assert(static_cast<int>((ym            ).year()) == i + 2);
+        assert(ym.month() == m);
+        assert(ym.day()   == d);
+        assert(static_cast<int>((ym -= years{1}).year()) == i + 1);
+        assert(ym.month() == m);
+        assert(ym.day()   == d);
+        assert(static_cast<int>((ym            ).year()) == i + 1);
+        assert(ym.month() == m);
+        assert(ym.day()   == d);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/year.pass.cpp
new file mode 100644
index 0000000..3eba648
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.members/year.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: d_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_day>().year());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month_day>().year()));
+
+    static_assert( year_month_day{}.year() == year{}, "");
+
+    for (int i = 1; i <= 50; ++i)
+    {
+        year_month_day ym(year{i}, month{}, day{});
+        assert( static_cast<int>(ym.year()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..afc9f5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr bool operator==(const year_month_day& x, const year_month_day& y) noexcept;
+// constexpr strong_ordering operator<=>(const year_month_day& x, const year_month_day& y) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+constexpr bool test() {
+  using day            = std::chrono::day;
+  using year           = std::chrono::year;
+  using month          = std::chrono::month;
+  using year_month_day = std::chrono::year_month_day;
+
+  constexpr month January  = std::chrono::January;
+  constexpr month February = std::chrono::February;
+
+  assert(testOrder(
+      year_month_day{year{1234}, January, day{1}},
+      year_month_day{year{1234}, January, day{1}},
+      std::strong_ordering::equal));
+
+  // different day
+  assert(testOrder(
+      year_month_day{year{1234}, January, day{1}},
+      year_month_day{year{1234}, January, day{2}},
+      std::strong_ordering::less));
+
+  // different month
+  assert(testOrder(
+      year_month_day{year{1234}, January, day{1}},
+      year_month_day{year{1234}, February, day{1}},
+      std::strong_ordering::less));
+
+  // different year
+  assert(testOrder(
+      year_month_day{year{1234}, January, day{1}},
+      year_month_day{year{1235}, January, day{1}},
+      std::strong_ordering::less));
+
+  // different month and day
+  assert(testOrder(
+      year_month_day{year{1234}, January, day{2}},
+      year_month_day{year{1234}, February, day{1}},
+      std::strong_ordering::less));
+
+  // different year and month
+  assert(testOrder(
+      year_month_day{year{1234}, February, day{1}},
+      year_month_day{year{1235}, January, day{1}},
+      std::strong_ordering::less));
+
+  // different year and day
+  assert(testOrder(
+      year_month_day{year{1234}, January, day{2}},
+      year_month_day{year{1235}, January, day{1}},
+      std::strong_ordering::less));
+
+  // different year, month and day
+  assert(testOrder(
+      year_month_day{year{1234}, February, day{2}},
+      year_month_day{year{1235}, January, day{1}},
+      std::strong_ordering::less));
+
+  // same year, different days
+  for (unsigned i = 1; i < 28; ++i)
+    for (unsigned j = 1; j < 28; ++j)
+      assert((testOrder(
+          year_month_day{year{1234}, January, day{i}},
+          year_month_day{year{1234}, January, day{j}},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  // same year, different months
+  for (unsigned i = 1; i < 12; ++i)
+    for (unsigned j = 1; j < 12; ++j)
+      assert((testOrder(
+          year_month_day{year{1234}, month{i}, day{12}},
+          year_month_day{year{1234}, month{j}, day{12}},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  // same month, different years
+  for (int i = -5; i < 5; ++i)
+    for (int j = -5; j < 5; ++j)
+      assert((testOrder(
+          year_month_day{year{i}, January, day{12}},
+          year_month_day{year{j}, January, day{12}},
+          i == j  ? std::strong_ordering::equal
+          : i < j ? std::strong_ordering::less
+                  : std::strong_ordering::greater)));
+
+  return true;
+}
+
+int main(int, char**) {
+  using year_month_day = std::chrono::year_month_day;
+  AssertOrderAreNoexcept<year_month_day>();
+  AssertOrderReturn<std::strong_ordering, year_month_day>();
+
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..5ec0e04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/minus.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr year_month_day operator-(const year_month_day& ymd, const years& dy) noexcept;
+//    Returns: ymd + (-dy)
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test_constexpr ()
+{
+    std::chrono::year_month_day ym0{std::chrono::year{1234}, std::chrono::January, std::chrono::day{12}};
+    std::chrono::year_month_day ym1 = ym0 - std::chrono::years{10};
+    return
+        ym1.year()  == std::chrono::year{1234-10}
+     && ym1.month() == std::chrono::January
+     && ym1.day()   == std::chrono::day{12}
+        ;
+}
+
+int main(int, char**)
+{
+    using year           = std::chrono::year;
+    using month          = std::chrono::month;
+    using day            = std::chrono::day;
+    using year_month_day = std::chrono::year_month_day;
+    using years          = std::chrono::years;
+
+    ASSERT_NOEXCEPT(                          std::declval<year_month_day>() - std::declval<years>());
+    ASSERT_SAME_TYPE(year_month_day, decltype(std::declval<year_month_day>() - std::declval<years>()));
+
+    constexpr month January = std::chrono::January;
+
+    static_assert(test_constexpr(), "");
+
+    year_month_day ym{year{1234}, January, day{10}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_day ym1 = ym - years{i};
+        assert(static_cast<int>(ym1.year()) == 1234 - i);
+        assert(ym1.month() == January);
+        assert(ym1.day() == day{10});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..595e00f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/ostream.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class year_month_day;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const year_month_day& ymd);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::year_month_day ymd) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << ymd;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::year_month_day ymd) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymd;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::year_month_day ymd) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymd;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::day{1}}) ==
+         SV("-32768-01-01 is not a valid date"));
+  assert(stream_c_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::day{1}}) ==
+         SV("-32767-00-01 is not a valid date"));
+  assert(stream_c_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::day{0}}) ==
+         SV("-32767-01-00 is not a valid date"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{1}}) == SV("1970-01-01"));
+  assert(stream_c_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{1999}, std::chrono::month{2}, std::chrono::day{29}}) ==
+         SV("1999-02-29 is not a valid date"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{2000}, std::chrono::month{2}, std::chrono::day{29}}) == SV("2000-02-29"));
+
+#if defined(_AIX)
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}) == SV("+32767-12-31"));
+#else  // defined(_AIX)
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}) == SV("32767-12-31"));
+#endif // defined(_AIX)
+
+  assert(stream_fr_FR_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::day{1}}) ==
+         SV("-32768-01-01 is not a valid date"));
+  assert(stream_fr_FR_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::day{1}}) ==
+         SV("-32767-00-01 is not a valid date"));
+  assert(stream_fr_FR_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::day{0}}) ==
+         SV("-32767-01-00 is not a valid date"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{1}}) == SV("1970-01-01"));
+  assert(stream_fr_FR_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{1999}, std::chrono::month{2}, std::chrono::day{29}}) ==
+         SV("1999-02-29 is not a valid date"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{2000}, std::chrono::month{2}, std::chrono::day{29}}) == SV("2000-02-29"));
+#if defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}) == SV("+32767-12-31"));
+#else  // defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}) == SV("32767-12-31"));
+#endif // defined(_AIX)
+
+  assert(stream_ja_JP_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::day{1}}) ==
+         SV("-32768-01-01 is not a valid date"));
+  assert(stream_ja_JP_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::day{1}}) ==
+         SV("-32767-00-01 is not a valid date"));
+  assert(stream_ja_JP_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::day{0}}) ==
+         SV("-32767-01-00 is not a valid date"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{1}}) == SV("1970-01-01"));
+  assert(stream_ja_JP_locale<CharT>(
+             std::chrono::year_month_day{std::chrono::year{1999}, std::chrono::month{2}, std::chrono::day{29}}) ==
+         SV("1999-02-29 is not a valid date"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{2000}, std::chrono::month{2}, std::chrono::day{29}}) == SV("2000-02-29"));
+#if defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}) == SV("+32767-12-31"));
+#else  // defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day{
+             std::chrono::year{32'767}, std::chrono::month{12}, std::chrono::day{31}}) == SV("32767-12-31"));
+#endif // defined(_AIX)
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..0d4b5d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/time.cal.ymd.nonmembers/plus.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+// constexpr year_month_day operator+(const year_month_day& ymd, const months& dm) noexcept;
+//   Returns: (ymd.year() / ymd.month() + dm) / ymd.day().
+//
+// constexpr year_month_day operator+(const months& dm, const year_month_day& ymd) noexcept;
+//   Returns: ymd + dm.
+//
+//
+// constexpr year_month_day operator+(const year_month_day& ymd, const years& dy) noexcept;
+//   Returns: (ymd.year() + dy) / ymd.month() / ymd.day().
+//
+// constexpr year_month_day operator+(const years& dy, const year_month_day& ymd) noexcept;
+//   Returns: ym + dm.
+
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool testConstexprYears(std::chrono::year_month_day ym)
+{
+    std::chrono::years offset{23};
+    if (static_cast<int>((ym         ).year()) !=  1) return false;
+    if (static_cast<int>((ym + offset).year()) != 24) return false;
+    if (static_cast<int>((offset + ym).year()) != 24) return false;
+    return true;
+}
+
+
+constexpr bool testConstexprMonths(std::chrono::year_month_day ym)
+{
+    std::chrono::months offset{6};
+    if (static_cast<unsigned>((ym         ).month()) !=  1) return false;
+    if (static_cast<unsigned>((ym + offset).month()) !=  7) return false;
+    if (static_cast<unsigned>((offset + ym).month()) !=  7) return false;
+    return true;
+}
+
+
+int main(int, char**)
+{
+    using day        = std::chrono::day;
+    using year       = std::chrono::year;
+    using years      = std::chrono::years;
+    using month      = std::chrono::month;
+    using months     = std::chrono::months;
+    using year_month_day = std::chrono::year_month_day;
+
+    {   // year_month_day + months
+    ASSERT_NOEXCEPT(std::declval<year_month_day>() + std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month_day>());
+
+    ASSERT_SAME_TYPE(year_month_day, decltype(std::declval<year_month_day>() + std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_day, decltype(std::declval<months>() + std::declval<year_month_day>()));
+
+    static_assert(testConstexprMonths(year_month_day{year{1}, month{1}, day{1}}), "");
+
+    year_month_day ym{year{1234}, std::chrono::January, day{12}};
+    for (int i = 0; i <= 10; ++i)  // TODO test wrap-around
+    {
+        year_month_day ym1 = ym + months{i};
+        year_month_day ym2 = months{i} + ym;
+        assert(static_cast<int>(ym1.year()) == 1234);
+        assert(static_cast<int>(ym2.year()) == 1234);
+        assert(ym1.month() == month(1 + i));
+        assert(ym2.month() == month(1 + i));
+        assert(ym1.day()   == day{12});
+        assert(ym2.day()   == day{12});
+        assert(ym1 == ym2);
+    }
+    }
+
+    {   // year_month_day + years
+    ASSERT_NOEXCEPT(std::declval<year_month_day>() + std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month_day>());
+
+    ASSERT_SAME_TYPE(year_month_day, decltype(std::declval<year_month_day>() + std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_day, decltype(std::declval<years>() + std::declval<year_month_day>()));
+
+    static_assert(testConstexprYears (year_month_day{year{1}, month{1}, day{1}}), "");
+
+    year_month_day ym{year{1234}, std::chrono::January, day{12}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_day ym1 = ym + years{i};
+        year_month_day ym2 = years{i} + ym;
+        assert(static_cast<int>(ym1.year()) == i + 1234);
+        assert(static_cast<int>(ym2.year()) == i + 1234);
+        assert(ym1.month() == std::chrono::January);
+        assert(ym2.month() == std::chrono::January);
+        assert(ym1.day()   == day{12});
+        assert(ym2.day()   == day{12});
+        assert(ym1 == ym2);
+    }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/types.pass.cpp
new file mode 100644
index 0000000..8b7342a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymd/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year_month_day = std::chrono::year_month_day;
+
+    static_assert(std::is_trivially_copyable_v<year_month_day>, "");
+    static_assert(std::is_standard_layout_v<year_month_day>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/ctor.pass.cpp
new file mode 100644
index 0000000..db4d2e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/ctor.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+//  constexpr year_month_day_last(const chrono::year& y,
+//                                const chrono::month_day_last& mdl) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_day_last by initializing
+//                initializing y_ with y and mdl_ with mdl.
+//
+//  constexpr chrono::year                     year() const noexcept;
+//  constexpr chrono::month                   month() const noexcept;
+//  constexpr chrono::month_day_last month_day_last() const noexcept;
+//  constexpr bool                               ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    ASSERT_NOEXCEPT(year_month_day_last{year{1}, month_day_last{month{1}}});
+
+    constexpr month January = std::chrono::January;
+
+    constexpr year_month_day_last ymdl0{year{}, month_day_last{month{}}};
+    static_assert( ymdl0.year()           == year{},                  "");
+    static_assert( ymdl0.month()          == month{},                 "");
+    static_assert( ymdl0.month_day_last() == month_day_last{month{}}, "");
+    static_assert(!ymdl0.ok(),                                        "");
+
+    constexpr year_month_day_last ymdl1{year{2019}, month_day_last{January}};
+    static_assert( ymdl1.year()           == year{2019},              "");
+    static_assert( ymdl1.month()          == January,                 "");
+    static_assert( ymdl1.month_day_last() == month_day_last{January}, "");
+    static_assert( ymdl1.ok(),                                        "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/day.pass.cpp
new file mode 100644
index 0000000..cf3c109
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/day.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using day                 = std::chrono::day;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    ASSERT_NOEXCEPT(               std::declval<const year_month_day_last>().day());
+    ASSERT_SAME_TYPE(day, decltype(std::declval<const year_month_day_last>().day()));
+
+    // Some months have a 31st
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 1}}}.day() == day{31}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 2}}}.day() == day{29}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 3}}}.day() == day{31}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 4}}}.day() == day{30}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 5}}}.day() == day{31}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 6}}}.day() == day{30}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 7}}}.day() == day{31}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 8}}}.day() == day{31}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{ 9}}}.day() == day{30}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{10}}}.day() == day{31}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{11}}}.day() == day{30}, "");
+    static_assert( year_month_day_last{year{2020}, month_day_last{month{12}}}.day() == day{31}, "");
+
+    assert((year_month_day_last{year{2019}, month_day_last{month{ 2}}}.day() == day{28}));
+    assert((year_month_day_last{year{2020}, month_day_last{month{ 2}}}.day() == day{29}));
+    assert((year_month_day_last{year{2021}, month_day_last{month{ 2}}}.day() == day{28}));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/month.pass.cpp
new file mode 100644
index 0000000..d7384f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/month.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    ASSERT_NOEXCEPT(                 std::declval<const year_month_day_last>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const year_month_day_last>().month()));
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_day_last ymd(year{1234}, month_day_last{month{i}});
+        assert( static_cast<unsigned>(ymd.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/month_day_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/month_day_last.pass.cpp
new file mode 100644
index 0000000..f286c4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/month_day_last.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    ASSERT_NOEXCEPT(                          std::declval<const year_month_day_last>().month_day_last());
+    ASSERT_SAME_TYPE(month_day_last, decltype(std::declval<const year_month_day_last>().month_day_last()));
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_day_last ymdl(year{1234}, month_day_last{month{i}});
+        assert( static_cast<unsigned>(ymdl.month_day_last().month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/ok.pass.cpp
new file mode 100644
index 0000000..09c52b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/ok.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr bool ok() const noexcept;
+//  Returns: m_.ok() && y_.ok().
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    constexpr month January = std::chrono::January;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_day_last>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month_day_last>().ok()));
+
+    static_assert(!year_month_day_last{year{-32768}, month_day_last{month{}}}.ok(), ""); // both bad
+    static_assert(!year_month_day_last{year{-32768}, month_day_last{January}}.ok(), ""); // Bad year
+    static_assert(!year_month_day_last{year{2019},   month_day_last{month{}}}.ok(), ""); // Bad month
+    static_assert( year_month_day_last{year{2019},   month_day_last{January}}.ok(), ""); // All OK
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_day_last ym{year{2019}, month_day_last{month{i}}};
+        assert( ym.ok() == month{i}.ok());
+    }
+
+    const int ymax = static_cast<int>(year::max());
+    for (int i = ymax - 100; i <= ymax + 100; ++i)
+    {
+        year_month_day_last ym{year{i}, month_day_last{January}};
+        assert( ym.ok() == year{i}.ok());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/op_local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/op_local_days.pass.cpp
new file mode 100644
index 0000000..7760cfc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/op_local_days.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr operator local_days() const noexcept;
+//  Returns: local_days{sys_days{*this}.time_since_epoch()}.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using local_days          = std::chrono::local_days;
+    using days                = std::chrono::days;
+
+    ASSERT_NOEXCEPT(                      static_cast<local_days>(std::declval<const year_month_day_last>()));
+    ASSERT_SAME_TYPE(local_days, decltype(static_cast<local_days>(std::declval<const year_month_day_last>())));
+
+    { // Last day in Jan 1970 was the 31st
+    constexpr year_month_day_last ymdl{year{1970}, month_day_last{std::chrono::January}};
+    constexpr local_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{30}, "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{2000}, month_day_last{std::chrono::January}};
+    constexpr local_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{10957+30}, "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{1940}, month_day_last{std::chrono::January}};
+    constexpr local_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{-10957+29}, "");
+    }
+
+    {
+    year_month_day_last ymdl{year{1939}, month_day_last{std::chrono::November}};
+    local_days sd{ymdl};
+
+    assert(sd.time_since_epoch() == days{-(10957+33)});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/op_sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/op_sys_days.pass.cpp
new file mode 100644
index 0000000..e33cec6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/op_sys_days.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr operator sys_days() const noexcept;
+//  Returns: sys_days{year()/month()/day()}.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using sys_days            = std::chrono::sys_days;
+    using days                = std::chrono::days;
+
+    ASSERT_NOEXCEPT(                    static_cast<sys_days>(std::declval<const year_month_day_last>()));
+    ASSERT_SAME_TYPE(sys_days, decltype(static_cast<sys_days>(std::declval<const year_month_day_last>())));
+
+    { // Last day in Jan 1970 was the 31st
+    constexpr year_month_day_last ymdl{year{1970}, month_day_last{std::chrono::January}};
+    constexpr sys_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{30}, "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{2000}, month_day_last{std::chrono::January}};
+    constexpr sys_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{10957+30}, "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{1940}, month_day_last{std::chrono::January}};
+    constexpr sys_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{-10957+29}, "");
+    }
+
+    {
+    year_month_day_last ymdl{year{1939}, month_day_last{std::chrono::November}};
+    sys_days sd{ymdl};
+
+    assert(sd.time_since_epoch() == days{-(10957+33)});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_month.pass.cpp
new file mode 100644
index 0000000..ee81fb1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_month.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr year_month_day_last& operator+=(const months& m) noexcept;
+// constexpr year_month_day_last& operator-=(const months& m) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<unsigned>((d1          ).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 1}).month()) !=  2) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 2}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 += Ds{12}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 1}).month()) !=  3) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 2}).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 -= Ds{12}).month()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using months              = std::chrono::months;
+
+    ASSERT_NOEXCEPT(std::declval<year_month_day_last&>() += std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<year_month_day_last&>() -= std::declval<months>());
+
+    ASSERT_SAME_TYPE(year_month_day_last&, decltype(std::declval<year_month_day_last&>() += std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_day_last&, decltype(std::declval<year_month_day_last&>() -= std::declval<months>()));
+
+    static_assert(testConstexpr<year_month_day_last, months>(year_month_day_last{year{1234}, month_day_last{month{1}}}), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        year y{1234};
+        month_day_last   mdl{month{i}};
+        year_month_day_last ym(y, mdl);
+        assert(static_cast<unsigned>((ym += months{2}).month()) == i + 2);
+        assert(ym.year() == y);
+        assert(static_cast<unsigned>((ym             ).month()) == i + 2);
+        assert(ym.year() == y);
+        assert(static_cast<unsigned>((ym -= months{1}).month()) == i + 1);
+        assert(ym.year() == y);
+        assert(static_cast<unsigned>((ym             ).month()) == i + 1);
+        assert(ym.year() == y);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_year.pass.cpp
new file mode 100644
index 0000000..c5c953d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/plus_minus_equal_year.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr year_month_day_last& operator+=(const years& d) noexcept;
+// constexpr year_month_day_last& operator-=(const years& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<int>((d1          ).year()) !=  1) return false;
+    if (static_cast<int>((d1 += Ds{ 1}).year()) !=  2) return false;
+    if (static_cast<int>((d1 += Ds{ 2}).year()) !=  4) return false;
+    if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false;
+    if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false;
+    if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false;
+    if (static_cast<int>((d1 -= Ds{12}).year()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using years               = std::chrono::years;
+
+    ASSERT_NOEXCEPT(std::declval<year_month_day_last&>() += std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<year_month_day_last&>() -= std::declval<years>());
+
+    ASSERT_SAME_TYPE(year_month_day_last&, decltype(std::declval<year_month_day_last&>() += std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_day_last&, decltype(std::declval<year_month_day_last&>() -= std::declval<years>()));
+
+    static_assert(testConstexpr<year_month_day_last, years>(year_month_day_last{year{1}, month_day_last{month{1}}}), "");
+
+    for (int i = 1000; i <= 1010; ++i)
+    {
+        month_day_last mdl{month{2}};
+        year_month_day_last ymdl(year{i}, mdl);
+        assert(static_cast<int>((ymdl += years{2}).year()) == i + 2);
+        assert(ymdl.month_day_last() == mdl);
+        assert(static_cast<int>((ymdl            ).year()) == i + 2);
+        assert(ymdl.month_day_last() == mdl);
+        assert(static_cast<int>((ymdl -= years{1}).year()) == i + 1);
+        assert(ymdl.month_day_last() == mdl);
+        assert(static_cast<int>((ymdl            ).year()) == i + 1);
+        assert(ymdl.month_day_last() == mdl);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/year.pass.cpp
new file mode 100644
index 0000000..1171687
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.members/year.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr chrono::day day() const noexcept;
+//  Returns: d_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_day_last>().year());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month_day_last>().year()));
+
+    for (int i = 1; i <= 50; ++i)
+    {
+        year_month_day_last ym(year{i}, month_day_last{month{}});
+        assert( static_cast<int>(ym.year()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..45d7e51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr bool operator==(const year_month_day_last& x, const year_month_day_last& y) noexcept;
+//   Returns: x.year() == y.year() && x.month_day_last() == y.month_day_last().
+//
+// constexpr bool operator< (const year_month_day_last& x, const year_month_day_last& y) noexcept;
+//   Returns:
+//      If x.year() < y.year(), returns true.
+//      Otherwise, if x.year() > y.year(), returns false.
+//      Otherwise, returns x.month_day_last() < y.month_day_last()
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+
+    AssertComparisonsAreNoexcept<year_month_day_last>();
+    AssertComparisonsReturnBool<year_month_day_last>();
+
+    constexpr month January = std::chrono::January;
+    constexpr month February = std::chrono::February;
+
+    static_assert( testComparisons(
+        year_month_day_last{year{1234}, month_day_last{January}},
+        year_month_day_last{year{1234}, month_day_last{January}},
+        true, false), "");
+
+    // different month
+    static_assert( testComparisons(
+        year_month_day_last{year{1234}, month_day_last{January}},
+        year_month_day_last{year{1234}, month_day_last{February}},
+        false, true), "");
+
+    // different year
+    static_assert( testComparisons(
+        year_month_day_last{year{1234}, month_day_last{January}},
+        year_month_day_last{year{1235}, month_day_last{January}},
+        false, true), "");
+
+    // different month
+    static_assert( testComparisons(
+        year_month_day_last{year{1234}, month_day_last{January}},
+        year_month_day_last{year{1234}, month_day_last{February}},
+        false, true), "");
+
+    // different year and month
+    static_assert( testComparisons(
+        year_month_day_last{year{1234}, month_day_last{February}},
+        year_month_day_last{year{1235}, month_day_last{January}},
+        false, true), "");
+
+    // same year, different months
+    for (unsigned i = 1; i < 12; ++i)
+        for (unsigned j = 1; j < 12; ++j)
+            assert((testComparisons(
+                year_month_day_last{year{1234}, month_day_last{month{i}}},
+                year_month_day_last{year{1234}, month_day_last{month{j}}},
+                i == j, i < j )));
+
+    // same month, different years
+    for (int i = 1000; i < 2000; ++i)
+        for (int j = 1000; j < 2000; ++j)
+        assert((testComparisons(
+            year_month_day_last{year{i}, month_day_last{January}},
+            year_month_day_last{year{j}, month_day_last{January}},
+            i == j, i < j )));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..59dca84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/minus.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr year_month_day_last
+//   operator-(const year_month_day_last& ymdl, const months& dm) noexcept;
+//
+//   Returns: ymdl + (-dm).
+//
+// constexpr year_month_day_last
+//   operator-(const year_month_day_last& ymdl, const years& dy) noexcept;
+//
+//   Returns: ymdl + (-dy).
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool testConstexprYears (std::chrono::year_month_day_last ymdl)
+{
+    std::chrono::year_month_day_last ym1 = ymdl - std::chrono::years{10};
+    return
+        ym1.year()  == std::chrono::year{static_cast<int>(ymdl.year()) - 10}
+     && ym1.month() == ymdl.month()
+        ;
+}
+
+constexpr bool testConstexprMonths (std::chrono::year_month_day_last ymdl)
+{
+    std::chrono::year_month_day_last ym1 = ymdl - std::chrono::months{6};
+    return
+        ym1.year()  == ymdl.year()
+     && ym1.month() == std::chrono::month{static_cast<unsigned>(ymdl.month()) - 6}
+        ;
+}
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using months              = std::chrono::months;
+    using years               = std::chrono::years;
+
+    constexpr month December = std::chrono::December;
+
+    { // year_month_day_last - years
+    ASSERT_NOEXCEPT(                               std::declval<year_month_day_last>() - std::declval<years>());
+    ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<year_month_day_last>() - std::declval<years>()));
+
+    static_assert(testConstexprYears(year_month_day_last{year{1234}, month_day_last{December}}), "");
+    year_month_day_last ym{year{1234}, month_day_last{December}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_day_last ym1 = ym - years{i};
+        assert(static_cast<int>(ym1.year()) == 1234 - i);
+        assert(ym1.month() == December);
+    }
+    }
+
+    { // year_month_day_last - months
+    ASSERT_NOEXCEPT(                               std::declval<year_month_day_last>() - std::declval<months>());
+    ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<year_month_day_last>() - std::declval<months>()));
+
+    static_assert(testConstexprMonths(year_month_day_last{year{1234}, month_day_last{December}}), "");
+    // TODO test wrapping
+    year_month_day_last ym{year{1234}, month_day_last{December}};
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        year_month_day_last ym1 = ym - months{i};
+        assert(static_cast<int>(ym1.year()) == 1234);
+        assert(static_cast<unsigned>(ym1.month()) == 12U-i);
+    }
+    }
+
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..9ded734
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/ostream.pass.cpp
@@ -0,0 +1,268 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class year_month_day_last;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const year_month_day_last& ymdl);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::year_month_day_last ymdl) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << ymdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::year_month_day_last ymdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::year_month_day_last ymdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{0}}}) ==
+         SV("0000/0 is not a valid month/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{1}}}) ==
+         SV("-32768 is not a valid year/Jan/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'767}, std::chrono::month_day_last{std::chrono::month{2}}}) == SV("-32767/Feb/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{3}}}) == SV("0000/Mar/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/Apr/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{32'767}, std::chrono::month_day_last{std::chrono::month{5}}}) == SV("32767/May/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{6}}}) == SV("0000/Jun/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{7}}}) == SV("0000/Jul/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{8}}}) == SV("0000/Aug/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{9}}}) == SV("0000/Sep/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{10}}}) == SV("0000/Oct/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{11}}}) == SV("0000/Nov/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{12}}}) == SV("0000/Dec/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{13}}}) ==
+         SV("0000/13 is not a valid month/last"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{255}}}) ==
+         SV("-32768 is not a valid year/255 is not a valid month/last"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{0}}}) ==
+         SV("0000/0 is not a valid month/last"));
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{1}}}) ==
+         SV("-32768 is not a valid year/jan/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'767}, std::chrono::month_day_last{std::chrono::month{2}}}) == SV("-32767/fév/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{3}}}) == SV("0000/mar/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/avr/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{32'767}, std::chrono::month_day_last{std::chrono::month{5}}}) == SV("32767/mai/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{6}}}) == SV("0000/jui/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{7}}}) == SV("0000/jul/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{8}}}) == SV("0000/aoû/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{9}}}) == SV("0000/sep/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{10}}}) == SV("0000/oct/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{11}}}) == SV("0000/nov/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{12}}}) == SV("0000/déc/last"));
+#else    //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{1}}}) ==
+         SV("-32768 is not a valid year/janv./last"));
+  assert(
+      stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+          std::chrono::year{-32'767}, std::chrono::month_day_last{std::chrono::month{2}}}) == SV("-32767/févr./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{3}}}) == SV("0000/mars/last"));
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/avr./last"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/avril/last"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{32'767}, std::chrono::month_day_last{std::chrono::month{5}}}) == SV("32767/mai/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{6}}}) == SV("0000/juin/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{7}}}) == SV("0000/juil./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{8}}}) == SV("0000/août/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{9}}}) == SV("0000/sept./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{10}}}) == SV("0000/oct./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{11}}}) == SV("0000/nov./last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{12}}}) == SV("0000/déc./last"));
+#endif   //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{13}}}) ==
+         SV("0000/13 is not a valid month/last"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{255}}}) ==
+         SV("-32768 is not a valid year/255 is not a valid month/last"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{0}}}) ==
+         SV("0000/0 is not a valid month/last"));
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{1}}}) ==
+         SV("-32768 is not a valid year/ 1/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'767}, std::chrono::month_day_last{std::chrono::month{2}}}) == SV("-32767/ 2/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{3}}}) == SV("0000/ 3/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/ 4/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{32'767}, std::chrono::month_day_last{std::chrono::month{5}}}) == SV("32767/ 5/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{6}}}) == SV("0000/ 6/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{7}}}) == SV("0000/ 7/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{8}}}) == SV("0000/ 8/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{9}}}) == SV("0000/ 9/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{10}}}) == SV("0000/10/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{11}}}) == SV("0000/11/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{12}}}) == SV("0000/12/last"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{1}}}) ==
+         SV("-32768 is not a valid year/1月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'767}, std::chrono::month_day_last{std::chrono::month{2}}}) == SV("-32767/2月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{3}}}) == SV("0000/3月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/4月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{32'767}, std::chrono::month_day_last{std::chrono::month{5}}}) == SV("32767/5月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{6}}}) == SV("0000/6月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{7}}}) == SV("0000/7月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{8}}}) == SV("0000/8月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{9}}}) == SV("0000/9月/last"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{1}}}) ==
+         SV("-32768 is not a valid year/ 1月/last"));
+  assert(
+      stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+          std::chrono::year{-32'767}, std::chrono::month_day_last{std::chrono::month{2}}}) == SV("-32767/ 2月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{3}}}) == SV("0000/ 3月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{4}}}) == SV("1970/ 4月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{32'767}, std::chrono::month_day_last{std::chrono::month{5}}}) == SV("32767/ 5月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{6}}}) == SV("0000/ 6月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{7}}}) == SV("0000/ 7月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{8}}}) == SV("0000/ 8月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{9}}}) == SV("0000/ 9月/last"));
+#  endif // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{10}}}) == SV("0000/10月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{11}}}) == SV("0000/11月/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{12}}}) == SV("0000/12月/last"));
+#endif   // defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{0}, std::chrono::month_day_last{std::chrono::month{13}}}) ==
+         SV("0000/13 is not a valid month/last"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_day_last{
+             std::chrono::year{-32'768}, std::chrono::month_day_last{std::chrono::month{255}}}) ==
+         SV("-32768 is not a valid year/255 is not a valid month/last"));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..916d0a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymdlast/time.cal.ymdlast.nonmembers/plus.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr year_month_day_last
+//   operator+(const year_month_day_last& ymdl, const months& dm) noexcept;
+//
+//   Returns: (ymdl.year() / ymdl.month() + dm) / last.
+//
+// constexpr year_month_day_last
+//   operator+(const months& dm, const year_month_day_last& ymdl) noexcept;
+//
+//   Returns: ymdl + dm.
+//
+//
+// constexpr year_month_day_last
+//   operator+(const year_month_day_last& ymdl, const years& dy) noexcept;
+//
+//   Returns: {ymdl.year()+dy, ymdl.month_day_last()}.
+//
+// constexpr year_month_day_last
+//   operator+(const years& dy, const year_month_day_last& ymdl) noexcept;
+//
+//   Returns: ymdl + dy
+
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool testConstexprYears(std::chrono::year_month_day_last ymdl)
+{
+    std::chrono::years offset{23};
+    if (static_cast<int>((ymdl         ).year()) !=  1)           return false;
+    if (static_cast<int>((ymdl + offset).year()) != 24)           return false;
+    if (                 (ymdl + offset).month() != ymdl.month()) return false;
+    if (static_cast<int>((offset + ymdl).year()) != 24)           return false;
+    if (                 (offset + ymdl).month() != ymdl.month()) return false;
+    return true;
+}
+
+
+constexpr bool testConstexprMonths(std::chrono::year_month_day_last ymdl)
+{
+    std::chrono::months offset{6};
+    if (static_cast<unsigned>((ymdl         ).month()) !=  1)          return false;
+    if (                      (ymdl + offset).year()   != ymdl.year()) return false;
+    if (static_cast<unsigned>((ymdl + offset).month()) !=  7)          return false;
+    if (static_cast<unsigned>((offset + ymdl).month()) !=  7)          return false;
+    if (                      (offset + ymdl).year()   != ymdl.year()) return false;
+    return true;
+}
+
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month               = std::chrono::month;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using months              = std::chrono::months;
+    using years               = std::chrono::years;
+
+    constexpr month January = std::chrono::January;
+
+    {   // year_month_day_last + months
+    ASSERT_NOEXCEPT(std::declval<year_month_day_last>() + std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month_day_last>());
+
+    ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<year_month_day_last>() + std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<months>() + std::declval<year_month_day_last>()));
+
+    static_assert(testConstexprMonths(year_month_day_last{year{1}, month_day_last{January}}), "");
+
+    year_month_day_last ym{year{1234}, month_day_last{January}};
+    for (int i = 0; i <= 10; ++i)  // TODO test wrap-around
+    {
+        year_month_day_last ym1 = ym + months{i};
+        year_month_day_last ym2 = months{i} + ym;
+        assert(static_cast<int>(ym1.year()) == 1234);
+        assert(static_cast<int>(ym2.year()) == 1234);
+        assert(ym1.month() == month(1 + i));
+        assert(ym2.month() == month(1 + i));
+        assert(ym1 == ym2);
+    }
+    }
+
+    {   // year_month_day_last + years
+    ASSERT_NOEXCEPT(std::declval<year_month_day_last>() + std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month_day_last>());
+
+    ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<year_month_day_last>() + std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<years>() + std::declval<year_month_day_last>()));
+
+    static_assert(testConstexprYears(year_month_day_last{year{1}, month_day_last{January}}), "");
+
+    year_month_day_last ym{year{1234}, month_day_last{January}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_day_last ym1 = ym + years{i};
+        year_month_day_last ym2 = years{i} + ym;
+        assert(static_cast<int>(ym1.year()) == i + 1234);
+        assert(static_cast<int>(ym2.year()) == i + 1234);
+        assert(ym1.month() == std::chrono::January);
+        assert(ym2.month() == std::chrono::January);
+        assert(ym1 == ym2);
+    }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.local_days.pass.cpp
new file mode 100644
index 0000000..7bc17fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.local_days.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+//  explicit constexpr year_month_weekday(const local_days& dp) noexcept;
+//
+//
+//  Effects:  Constructs an object of type year_month_weekday that corresponds
+//                to the date represented by dp
+//
+//  Remarks: Equivalent to constructing with sys_days{dp.time_since_epoch()}.
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr chrono::day     day() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using days               = std::chrono::days;
+    using local_days         = std::chrono::local_days;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(year_month_weekday{std::declval<const local_days>()});
+
+    {
+    constexpr local_days sd{}; // 1-Jan-1970 was a Thursday
+    constexpr year_month_weekday ymwd{sd};
+
+    static_assert( ymwd.ok(),                                                            "");
+    static_assert( ymwd.year()            == year{1970},                                 "");
+    static_assert( ymwd.month()           == std::chrono::January,                       "");
+    static_assert( ymwd.weekday()         == std::chrono::Thursday,                      "");
+    static_assert( ymwd.index()           == 1,                                          "");
+    static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Thursday, 1},  "");
+    static_assert( ymwd                   == year_month_weekday{local_days{ymwd}},       ""); // round trip
+    }
+
+    {
+    constexpr local_days sd{days{10957+32}}; // 2-Feb-2000 was a Wednesday
+    constexpr year_month_weekday ymwd{sd};
+
+    static_assert( ymwd.ok(),                                                            "");
+    static_assert( ymwd.year()            == year{2000},                                 "");
+    static_assert( ymwd.month()           == std::chrono::February,                      "");
+    static_assert( ymwd.weekday()         == std::chrono::Wednesday,                     "");
+    static_assert( ymwd.index()           == 1,                                          "");
+    static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Wednesday, 1}, "");
+    static_assert( ymwd                   == year_month_weekday{local_days{ymwd}},       ""); // round trip
+    }
+
+
+    {
+    constexpr local_days sd{days{-10957}}; // 2-Jan-1940 was a Tuesday
+    constexpr year_month_weekday ymwd{sd};
+
+    static_assert( ymwd.ok(),                                                            "");
+    static_assert( ymwd.year()            == year{1940},                                 "");
+    static_assert( ymwd.month()           == std::chrono::January,                       "");
+    static_assert( ymwd.weekday()         == std::chrono::Tuesday,                       "");
+    static_assert( ymwd.index()           == 1,                                          "");
+    static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Tuesday, 1},   "");
+    static_assert( ymwd                   == year_month_weekday{local_days{ymwd}},       ""); // round trip
+    }
+
+    {
+    local_days sd{days{-(10957+34)}}; // 29-Nov-1939 was a Wednesday
+    year_month_weekday ymwd{sd};
+
+    assert( ymwd.ok());
+    assert( ymwd.year()            == year{1939});
+    assert( ymwd.month()           == std::chrono::November);
+    assert( ymwd.weekday()         == std::chrono::Wednesday);
+    assert( ymwd.index()           == 5);
+    assert((ymwd.weekday_indexed() == weekday_indexed{std::chrono::Wednesday, 5}));
+    assert( ymwd                   == year_month_weekday{local_days{ymwd}}); // round trip
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.pass.cpp
new file mode 100644
index 0000000..e96cd19
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+//  year_month_weekday() = default;
+//  constexpr year_month_weekday(const chrono::year& y, const chrono::month& m,
+//                               const chrono::weekday_indexed& wdi) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_weekday by initializing
+//                y_ with y, m_ with m, and wdi_ with wdi.
+//
+//  constexpr chrono::year                       year() const noexcept;
+//  constexpr chrono::month                     month() const noexcept;
+//  constexpr chrono::weekday                 weekday() const noexcept;
+//  constexpr unsigned                          index() const noexcept;
+//  constexpr chrono::weekday_indexed weekday_indexed() const noexcept;
+//  constexpr bool                                 ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    constexpr month January = std::chrono::January;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    ASSERT_NOEXCEPT(year_month_weekday{});
+    ASSERT_NOEXCEPT(year_month_weekday{year{1}, month{1}, weekday_indexed{Tuesday, 1}});
+
+    constexpr year_month_weekday ym0{};
+    static_assert( ym0.year()            == year{},            "");
+    static_assert( ym0.month()           == month{},           "");
+    static_assert( ym0.weekday()         == weekday{},         "");
+    static_assert( ym0.index()           == 0,                 "");
+    static_assert( ym0.weekday_indexed() == weekday_indexed{}, "");
+    static_assert(!ym0.ok(),                                   "");
+
+    constexpr year_month_weekday ym1{year{2019}, January, weekday_indexed{Tuesday, 1}};
+    static_assert( ym1.year()            == year{2019},                  "");
+    static_assert( ym1.month()           == January,                     "");
+    static_assert( ym1.weekday()         == Tuesday,                     "");
+    static_assert( ym1.index()           == 1,                           "");
+    static_assert( ym1.weekday_indexed() == weekday_indexed{Tuesday, 1}, "");
+    static_assert( ym1.ok(),                                             "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.sys_days.pass.cpp
new file mode 100644
index 0000000..a5c544b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ctor.sys_days.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+//  constexpr year_month_weekday(const sys_days& dp) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_weekday that corresponds
+//                to the date represented by dp
+//
+//  Remarks: For any value ymd of type year_month_weekday for which ymd.ok() is true,
+//                ymd == year_month_weekday{sys_days{ymd}} is true.
+//
+//  constexpr chrono::year   year() const noexcept;
+//  constexpr chrono::month month() const noexcept;
+//  constexpr bool             ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using days               = std::chrono::days;
+    using sys_days           = std::chrono::sys_days;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(year_month_weekday{std::declval<const sys_days>()});
+
+    {
+    constexpr sys_days sd{}; // 1-Jan-1970 was a Thursday
+    constexpr year_month_weekday ymwd{sd};
+
+    static_assert( ymwd.ok(),                                                            "");
+    static_assert( ymwd.year()            == year{1970},                                 "");
+    static_assert( ymwd.month()           == std::chrono::January,                       "");
+    static_assert( ymwd.weekday()         == std::chrono::Thursday,                      "");
+    static_assert( ymwd.index()           == 1,                                          "");
+    static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Thursday, 1},  "");
+    static_assert( ymwd                   == year_month_weekday{sys_days{ymwd}},         ""); // round trip
+    }
+
+    {
+    constexpr sys_days sd{days{10957+32}}; // 2-Feb-2000 was a Wednesday
+    constexpr year_month_weekday ymwd{sd};
+
+    static_assert( ymwd.ok(),                                                            "");
+    static_assert( ymwd.year()            == year{2000},                                 "");
+    static_assert( ymwd.month()           == std::chrono::February,                      "");
+    static_assert( ymwd.weekday()         == std::chrono::Wednesday,                     "");
+    static_assert( ymwd.index()           == 1,                                          "");
+    static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Wednesday, 1}, "");
+    static_assert( ymwd                   == year_month_weekday{sys_days{ymwd}},         ""); // round trip
+    }
+
+
+    {
+    constexpr sys_days sd{days{-10957}}; // 2-Jan-1940 was a Tuesday
+    constexpr year_month_weekday ymwd{sd};
+
+    static_assert( ymwd.ok(),                                                            "");
+    static_assert( ymwd.year()            == year{1940},                                 "");
+    static_assert( ymwd.month()           == std::chrono::January,                       "");
+    static_assert( ymwd.weekday()         == std::chrono::Tuesday,                       "");
+    static_assert( ymwd.index()           == 1,                                          "");
+    static_assert( ymwd.weekday_indexed() == weekday_indexed{std::chrono::Tuesday, 1},   "");
+    static_assert( ymwd                   == year_month_weekday{sys_days{ymwd}},         ""); // round trip
+    }
+
+    {
+    sys_days sd{days{-(10957+34)}}; // 29-Nov-1939 was a Wednesday
+    year_month_weekday ymwd{sd};
+
+    assert( ymwd.ok());
+    assert( ymwd.year()            == year{1939});
+    assert( ymwd.month()           == std::chrono::November);
+    assert( ymwd.weekday()         == std::chrono::Wednesday);
+    assert( ymwd.index()           == 5);
+    assert((ymwd.weekday_indexed() == weekday_indexed{std::chrono::Wednesday, 5}));
+    assert( ymwd                   == year_month_weekday{sys_days{ymwd}}); // round trip
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/index.pass.cpp
new file mode 100644
index 0000000..a932354
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/index.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr unsigned index() const noexcept;
+//  Returns: wdi_.index()
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(                    std::declval<const year_month_weekday>().index());
+    ASSERT_SAME_TYPE(unsigned, decltype(std::declval<const year_month_weekday>().index()));
+
+    static_assert( year_month_weekday{}.index() == 0, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_weekday ymwd0(year{1234}, month{2}, weekday_indexed{weekday{2}, i});
+        assert(ymwd0.index() == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/month.pass.cpp
new file mode 100644
index 0000000..d03a568
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/month.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(                 std::declval<const year_month_weekday>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const year_month_weekday>().month()));
+
+    static_assert( year_month_weekday{}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_weekday ymd(year{1234}, month{i}, weekday_indexed{});
+        assert( static_cast<unsigned>(ymd.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ok.pass.cpp
new file mode 100644
index 0000000..5456bbe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/ok.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr bool ok() const noexcept;
+//  Returns: If any of y_.ok(), m_.ok(), or wdi_.ok() is false, returns false.
+//           Otherwise, if *this represents a valid date, returns true.
+//           Otherwise, returns false.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    constexpr month January     = std::chrono::January;
+    constexpr weekday Monday    = std::chrono::Monday;
+    constexpr weekday Tuesday   = std::chrono::Tuesday;
+    constexpr weekday Wednesday = std::chrono::Wednesday;
+    constexpr weekday Thursday  = std::chrono::Thursday;
+    constexpr weekday Friday    = std::chrono::Friday;
+    constexpr weekday Saturday  = std::chrono::Saturday;
+    constexpr weekday Sunday    = std::chrono::Sunday;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_weekday>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month_weekday>().ok()));
+
+    static_assert(!year_month_weekday{}.ok(), "");
+
+    static_assert(!year_month_weekday{year{-32768}, month{}, weekday_indexed{}}.ok(),           ""); // All three bad
+
+    static_assert(!year_month_weekday{year{-32768}, January, weekday_indexed{Tuesday, 1}}.ok(), ""); // Bad year
+    static_assert(!year_month_weekday{year{2019},   month{}, weekday_indexed{Tuesday, 1}}.ok(), ""); // Bad month
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{} }.ok(),          ""); // Bad day
+
+    static_assert(!year_month_weekday{year{-32768}, month{}, weekday_indexed{Tuesday, 1}}.ok(), ""); // Bad year & month
+    static_assert(!year_month_weekday{year{2019},   month{}, weekday_indexed{} }.ok(),          ""); // Bad month & day
+    static_assert(!year_month_weekday{year{-32768}, January, weekday_indexed{} }.ok(),          ""); // Bad year & day
+
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{Tuesday, static_cast<unsigned>(-1)}}.ok(), ""); // Bad index.
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{Wednesday, 0}}.ok(), "");                       // Bad index.
+
+    static_assert( year_month_weekday{year{2019},   January, weekday_indexed{Tuesday, 1}}.ok(), ""); // All OK
+    static_assert( year_month_weekday{year{2019},   January, weekday_indexed{Tuesday, 4}}.ok(), ""); // All OK
+
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{Monday, 5}}.ok(),    ""); // Bad index
+    static_assert( year_month_weekday{year{2019},   January, weekday_indexed{Tuesday, 5}}.ok(),   ""); // All OK
+    static_assert( year_month_weekday{year{2019},   January, weekday_indexed{Wednesday, 5}}.ok(), ""); // All OK
+    static_assert( year_month_weekday{year{2019},   January, weekday_indexed{Thursday, 5}}.ok(),  ""); // All OK
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{Friday, 5}}.ok(),    ""); // Bad index
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{Saturday, 5}}.ok(),  ""); // Bad index
+    static_assert(!year_month_weekday{year{2019},   January, weekday_indexed{Sunday, 5}}.ok(),    ""); // Bad index
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_weekday ym{year{2019}, January, weekday_indexed{Tuesday, i}};
+        assert((ym.ok() == weekday_indexed{Tuesday, i}.ok()));
+    }
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_weekday ym{year{2019}, January, weekday_indexed{weekday{i}, 1}};
+        assert((ym.ok() == weekday_indexed{weekday{i}, 1}.ok()));
+    }
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_weekday ym{year{2019}, month{i}, weekday_indexed{Tuesday, 1}};
+        assert((ym.ok() == month{i}.ok()));
+    }
+
+    const int ymax = static_cast<int>(year::max());
+    for (int i = ymax - 100; i <= ymax + 100; ++i)
+    {
+        year_month_weekday ym{year{i}, January, weekday_indexed{Tuesday, 1}};
+        assert((ym.ok() == year{i}.ok()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/op.local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/op.local_days.pass.cpp
new file mode 100644
index 0000000..51d1942
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/op.local_days.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// explicit constexpr operator local_days() const noexcept;
+//
+// Returns: If y_.ok() && m_.ok() && wdi_.weekday().ok(), returns a
+//    sys_days that represents the date (index() - 1) * 7 days after the first
+//    weekday() of year()/month(). If index() is 0 the returned sys_days
+//    represents the date 7 days prior to the first weekday() of
+//    year()/month(). Otherwise the returned value is unspecified.
+//
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using local_days         = std::chrono::local_days;
+    using days               = std::chrono::days;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(local_days(std::declval<year_month_weekday>()));
+
+    {
+    constexpr year_month_weekday ymwd{year{1970}, month{1}, weekday_indexed{std::chrono::Thursday, 1}};
+    constexpr local_days sd{ymwd};
+
+    static_assert( sd.time_since_epoch() == days{0}, "");
+    static_assert( year_month_weekday{sd} == ymwd, ""); // and back
+    }
+
+    {
+    constexpr year_month_weekday ymwd{year{2000}, month{2}, weekday_indexed{std::chrono::Wednesday, 1}};
+    constexpr local_days sd{ymwd};
+
+    static_assert( sd.time_since_epoch() == days{10957+32}, "");
+    static_assert( year_month_weekday{sd} == ymwd, ""); // and back
+    }
+
+    // There's one more leap day between 1/1/40 and 1/1/70
+    // when compared to 1/1/70 -> 1/1/2000
+    {
+    constexpr year_month_weekday ymwd{year{1940}, month{1},weekday_indexed{std::chrono::Tuesday, 1}};
+    constexpr local_days sd{ymwd};
+
+    static_assert( sd.time_since_epoch() == days{-10957}, "");
+    static_assert( year_month_weekday{sd} == ymwd, ""); // and back
+    }
+
+    {
+    year_month_weekday ymwd{year{1939}, month{11}, weekday_indexed{std::chrono::Wednesday, 5}};
+    local_days sd{ymwd};
+
+    assert( sd.time_since_epoch() == days{-(10957+34)});
+    assert( year_month_weekday{sd} == ymwd); // and back
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/op.sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/op.sys_days.pass.cpp
new file mode 100644
index 0000000..3ca32d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/op.sys_days.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr operator sys_days() const noexcept;
+//
+// Returns: If y_.ok() && m_.ok() && wdi_.weekday().ok(), returns a
+//    sys_days that represents the date (index() - 1) * 7 days after the first
+//    weekday() of year()/month(). If index() is 0 the returned sys_days
+//    represents the date 7 days prior to the first weekday() of
+//    year()/month(). Otherwise the returned value is unspecified.
+//
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using sys_days           = std::chrono::sys_days;
+    using days               = std::chrono::days;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(sys_days(std::declval<year_month_weekday>()));
+
+    {
+    constexpr year_month_weekday ymwd{year{1970}, month{1}, weekday_indexed{std::chrono::Thursday, 1}};
+    constexpr sys_days sd{ymwd};
+
+    static_assert( sd.time_since_epoch() == days{0}, "");
+    static_assert( year_month_weekday{sd} == ymwd, ""); // and back
+    }
+
+    {
+    constexpr year_month_weekday ymwd{year{2000}, month{2}, weekday_indexed{std::chrono::Wednesday, 1}};
+    constexpr sys_days sd{ymwd};
+
+    static_assert( sd.time_since_epoch() == days{10957+32}, "");
+    static_assert( year_month_weekday{sd} == ymwd, ""); // and back
+    }
+
+    // There's one more leap day between 1/1/40 and 1/1/70
+    // when compared to 1/1/70 -> 1/1/2000
+    {
+    constexpr year_month_weekday ymwd{year{1940}, month{1},weekday_indexed{std::chrono::Tuesday, 1}};
+    constexpr sys_days sd{ymwd};
+
+    static_assert( sd.time_since_epoch() == days{-10957}, "");
+    static_assert( year_month_weekday{sd} == ymwd, ""); // and back
+    }
+
+    {
+    year_month_weekday ymwd{year{1939}, month{11}, weekday_indexed{std::chrono::Wednesday, 5}};
+    sys_days sd{ymwd};
+
+    assert( sd.time_since_epoch() == days{-(10957+34)});
+    assert( year_month_weekday{sd} == ymwd); // and back
+    }
+
+    {
+    // Index 0 returns 7 weekdays before index 1 and can't be round-tripped.
+    constexpr year_month_weekday ymwd{year{2000}, month{2}, weekday_indexed{std::chrono::Wednesday, 0}};
+    constexpr sys_days sd{ymwd};
+
+    static_assert(sd.time_since_epoch() == days{10957 + 25});
+    static_assert(year_month_weekday{sd} != ymwd); // and back fails
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_month.pass.cpp
new file mode 100644
index 0000000..6231220
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_month.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr year_month_weekday& operator+=(const months& m) noexcept;
+// constexpr year_month_weekday& operator-=(const months& m) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<unsigned>((d1          ).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 1}).month()) !=  2) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 2}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 += Ds{12}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 1}).month()) !=  3) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 2}).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 -= Ds{12}).month()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+    using months             = std::chrono::months;
+
+
+    ASSERT_NOEXCEPT(                               std::declval<year_month_weekday&>() += std::declval<months>());
+    ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() += std::declval<months>()));
+
+    ASSERT_NOEXCEPT(                               std::declval<year_month_weekday&>() -= std::declval<months>());
+    ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() -= std::declval<months>()));
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    static_assert(testConstexpr<year_month_weekday, months>(year_month_weekday{year{1234}, month{1}, weekday_indexed{Tuesday, 2}}), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        year y{1234};
+        year_month_weekday ymwd(y, month{i}, weekday_indexed{Tuesday, 2});
+
+        assert(static_cast<unsigned>((ymwd += months{2}).month()) == i + 2);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+
+        assert(static_cast<unsigned>((ymwd             ).month()) == i + 2);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+
+        assert(static_cast<unsigned>((ymwd -= months{1}).month()) == i + 1);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+
+        assert(static_cast<unsigned>((ymwd             ).month()) == i + 1);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_year.pass.cpp
new file mode 100644
index 0000000..0ce9ffe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/plus_minus_equal_year.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr year_month_weekday& operator+=(const years& d) noexcept;
+// constexpr year_month_weekday& operator-=(const years& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<int>((d1          ).year()) !=  1) return false;
+    if (static_cast<int>((d1 += Ds{ 1}).year()) !=  2) return false;
+    if (static_cast<int>((d1 += Ds{ 2}).year()) !=  4) return false;
+    if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false;
+    if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false;
+    if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false;
+    if (static_cast<int>((d1 -= Ds{12}).year()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+    using years              = std::chrono::years;
+
+    ASSERT_NOEXCEPT(                               std::declval<year_month_weekday&>() += std::declval<years>());
+    ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() += std::declval<years>()));
+
+    ASSERT_NOEXCEPT(                               std::declval<year_month_weekday&>() -= std::declval<years>());
+    ASSERT_SAME_TYPE(year_month_weekday&, decltype(std::declval<year_month_weekday&>() -= std::declval<years>()));
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month January = std::chrono::January;
+
+    static_assert(testConstexpr<year_month_weekday, years>(year_month_weekday{year{1}, January, weekday_indexed{Tuesday, 2}}), "");
+
+    for (int i = 1000; i <= 1010; ++i)
+    {
+        year_month_weekday ymwd(year{i}, January, weekday_indexed{Tuesday, 2});
+
+        assert(static_cast<int>((ymwd += years{2}).year()) == i + 2);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+
+        assert(static_cast<int>((ymwd            ).year()) == i + 2);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+
+        assert(static_cast<int>((ymwd -= years{1}).year()) == i + 1);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+
+        assert(static_cast<int>((ymwd            ).year()) == i + 1);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+        assert(ymwd.index()    == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/weekday.pass.cpp
new file mode 100644
index 0000000..16e5fc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/weekday.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr chrono::weekday weekday() const noexcept;
+//  Returns: wdi_.weekday()
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(                   std::declval<const year_month_weekday>().weekday());
+    ASSERT_SAME_TYPE(weekday, decltype(std::declval<const year_month_weekday>().weekday()));
+
+    static_assert( year_month_weekday{}.weekday() == weekday{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_weekday ymwd0(year{1234}, month{2}, weekday_indexed{weekday{i}, 1});
+        assert(ymwd0.weekday().c_encoding() == (i == 7 ? 0 : i));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/weekday_indexed.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/weekday_indexed.pass.cpp
new file mode 100644
index 0000000..2251f1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/weekday_indexed.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr chrono::weekday_indexed weekday_indexed() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(                           std::declval<const year_month_weekday>().weekday_indexed());
+    ASSERT_SAME_TYPE(weekday_indexed, decltype(std::declval<const year_month_weekday>().weekday_indexed()));
+
+    static_assert( year_month_weekday{}.weekday_indexed() == weekday_indexed{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_weekday ymwd0(year{1234}, month{2}, weekday_indexed{weekday{i}, 1});
+        assert( ymwd0.weekday_indexed().weekday().c_encoding() == (i == 7 ? 0 : i));
+        assert( static_cast<unsigned>(ymwd0.weekday_indexed().index()) == 1);
+
+        year_month_weekday ymwd1(year{1234}, month{2}, weekday_indexed{weekday{2}, i});
+        assert( ymwd1.weekday_indexed().weekday().c_encoding() == 2);
+        assert( static_cast<unsigned>(ymwd1.weekday_indexed().index()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/year.pass.cpp
new file mode 100644
index 0000000..fe44ff5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.members/year.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr chrono::year year() const noexcept;
+//  Returns: d_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_weekday>().year());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month_weekday>().year()));
+
+    static_assert( year_month_weekday{}.year() == year{}, "");
+
+    for (int i = 1; i <= 50; ++i)
+    {
+        year_month_weekday ym(year{i}, month{1}, weekday_indexed{});
+        assert( static_cast<int>(ym.year()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..5949dc7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr bool operator==(const year_month_weekday& x, const year_month_weekday& y) noexcept;
+//   Returns: x.year() == y.year() && x.month() == y.month() && x.weekday_indexed() == y.weekday_indexed()
+//
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using weekday            = std::chrono::weekday;
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    AssertEqualityAreNoexcept<year_month_weekday>();
+    AssertEqualityReturnBool<year_month_weekday>();
+
+    constexpr month January   = std::chrono::January;
+    constexpr month February  = std::chrono::February;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, 1}},
+        year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, 1}},
+        true), "");
+
+    // different day
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, 1}},
+        year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, 2}},
+        false), "");
+
+    // different month
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, January,  weekday_indexed{Tuesday, 1}},
+        year_month_weekday{year{1234}, February, weekday_indexed{Tuesday, 1}},
+        false), "");
+
+    // different year
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, 1}},
+        year_month_weekday{year{1235}, January, weekday_indexed{Tuesday, 1}},
+        false), "");
+
+
+    // different month and day
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, January,  weekday_indexed{Tuesday, 1}},
+        year_month_weekday{year{1234}, February, weekday_indexed{Tuesday, 2}},
+        false), "");
+
+    // different year and month
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, February, weekday_indexed{Tuesday, 1}},
+        year_month_weekday{year{1235}, January,  weekday_indexed{Tuesday, 1}},
+        false), "");
+
+    // different year and day
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, 2}},
+        year_month_weekday{year{1235}, January, weekday_indexed{Tuesday, 1}},
+        false), "");
+
+    // different year, month and day
+    static_assert( testEquality(
+        year_month_weekday{year{1234}, February, weekday_indexed{Tuesday, 2}},
+        year_month_weekday{year{1235}, January,  weekday_indexed{Tuesday, 1}},
+        false), "");
+
+
+    // same year, different days
+    for (unsigned i = 1; i < 28; ++i)
+        for (unsigned j = 1; j < 28; ++j)
+            assert((testEquality(
+                year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, i}},
+                year_month_weekday{year{1234}, January, weekday_indexed{Tuesday, j}},
+                i == j)));
+
+    // same year, different months
+    for (unsigned i = 1; i < 12; ++i)
+        for (unsigned j = 1; j < 12; ++j)
+            assert((testEquality(
+                year_month_weekday{year{1234}, month{i}, weekday_indexed{Tuesday, 1}},
+                year_month_weekday{year{1234}, month{j}, weekday_indexed{Tuesday, 1}},
+                i == j)));
+
+    // same month, different years
+    for (int i = 1000; i < 2000; ++i)
+        for (int j = 1000; j < 2000; ++j)
+        assert((testEquality(
+            year_month_weekday{year{i}, January, weekday_indexed{Tuesday, 1}},
+            year_month_weekday{year{j}, January, weekday_indexed{Tuesday, 1}},
+            i == j)));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..dacf84b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/minus.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr year_month_weekday operator-(const year_month_weekday& ymwd, const months& dm) noexcept;
+//   Returns: ymwd + (-dm).
+//
+// constexpr year_month_weekday operator-(const year_month_weekday& ymwd, const years& dy) noexcept;
+//   Returns: ymwd + (-dy).
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+constexpr bool testConstexprYears ()
+{
+    std::chrono::year_month_weekday ym0{std::chrono::year{1234}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::Tuesday, 1}};
+    std::chrono::year_month_weekday ym1 = ym0 - std::chrono::years{10};
+    return
+        ym1.year()    == std::chrono::year{1234-10}
+     && ym1.month()   == std::chrono::January
+     && ym1.weekday() == std::chrono::Tuesday
+     && ym1.index()   == 1
+        ;
+}
+
+constexpr bool testConstexprMonths ()
+{
+    std::chrono::year_month_weekday ym0{std::chrono::year{1234}, std::chrono::November, std::chrono::weekday_indexed{std::chrono::Tuesday, 1}};
+    std::chrono::year_month_weekday ym1 = ym0 - std::chrono::months{6};
+    return
+        ym1.year()    == std::chrono::year{1234}
+     && ym1.month()   == std::chrono::May
+     && ym1.weekday() == std::chrono::Tuesday
+     && ym1.index()   == 1
+        ;
+}
+
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+    using years              = std::chrono::years;
+    using months             = std::chrono::months;
+
+    constexpr month November  = std::chrono::November;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    {  // year_month_weekday - years
+    ASSERT_NOEXCEPT(                              std::declval<year_month_weekday>() - std::declval<years>());
+    ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<year_month_weekday>() - std::declval<years>()));
+
+    static_assert(testConstexprYears(), "");
+
+    year_month_weekday ym{year{1234}, November, weekday_indexed{Tuesday, 1}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_weekday ym1 = ym - years{i};
+        assert(static_cast<int>(ym1.year()) == 1234 - i);
+        assert(ym1.month()   == November);
+        assert(ym1.weekday() == Tuesday);
+        assert(ym1.index()   == 1);
+    }
+    }
+
+    {  // year_month_weekday - months
+    ASSERT_NOEXCEPT(                              std::declval<year_month_weekday>() - std::declval<months>());
+    ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<year_month_weekday>() - std::declval<months>()));
+
+    static_assert(testConstexprMonths(), "");
+
+    year_month_weekday ym{year{1234}, November, weekday_indexed{Tuesday, 2}};
+    for (unsigned i = 1; i <= 10; ++i)
+    {
+        year_month_weekday ym1 = ym - months{i};
+        assert(ym1.year()    == year{1234});
+        assert(ym1.month()   == month{11-i});
+        assert(ym1.weekday() == Tuesday);
+        assert(ym1.index()   == 2);
+    }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..05578f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/ostream.pass.cpp
@@ -0,0 +1,251 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class year_month_weekday;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const year_month_weekday& ymwd);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::year_month_weekday ymwd) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << ymwd;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::year_month_weekday ymwd) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymwd;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::year_month_weekday ymwd) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymwd;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'768},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32768 is not a valid year/Jan/Sun[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{0},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/0 is not a valid month/Sun[1]"));
+  assert(
+      stream_c_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{-32'767},
+          std::chrono::month{1},
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 1}}) == SV("-32767/Jan/8 is not a valid weekday[1]"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 0}}) ==
+         SV("-32767/Jan/Sun[0 is not a valid index]")); // note 0 is a valid index here...
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/Jan/Sun[1]"));
+
+  assert(
+      stream_c_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) ==
+      SV("1970/Jan/Sun[1]"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'768},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32768 is not a valid year/jan/Dim[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{0},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/0 is not a valid month/Dim[1]"));
+  assert(
+      stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{-32'767},
+          std::chrono::month{1},
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 1}}) == SV("-32767/jan/8 is not a valid weekday[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 0}}) ==
+         SV("-32767/jan/Dim[0 is not a valid index]")); // note 0 is a valid index here...
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/jan/Dim[1]"));
+
+  assert(
+      stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) ==
+      SV("1970/jan/Dim[1]"));
+#else  //  defined(__APPLE__)
+  assert(
+      stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{-32'768},
+          std::chrono::month{1},
+          std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32768 is not a valid year/janv./dim.[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{0},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/0 is not a valid month/dim.[1]"));
+  assert(
+      stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{-32'767},
+          std::chrono::month{1},
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 1}}) == SV("-32767/janv./8 is not a valid weekday[1]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 0}}) ==
+         SV("-32767/janv./dim.[0 is not a valid index]")); // note 0 is a valid index here...
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/janv./dim.[1]"));
+
+  assert(
+      stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) ==
+      SV("1970/janv./dim.[1]"));
+#endif //  defined(__APPLE__)
+
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'768},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32768 is not a valid year/ 1/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{0},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/0 is not a valid month/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(8), 1}}) == SV("-32767/ 1/8 is not a valid weekday[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 0}}) ==
+         SV("-32767/ 1/日[0 is not a valid index]")); // note 0 is a valid index here...
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/ 1/日[1]"));
+
+  assert(
+      stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) ==
+      SV("1970/ 1/日[1]"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'768},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32768 is not a valid year/1月/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{0},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/0 is not a valid month/日[1]"));
+  assert(
+      stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{-32'767},
+          std::chrono::month{1},
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 1}}) == SV("-32767/1月/8 is not a valid weekday[1]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 0}}) ==
+         SV("-32767/1月/日[0 is not a valid index]")); // note 0 is a valid index here...
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/1月/日[1]"));
+
+  assert(
+      stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) ==
+      SV("1970/1月/日[1]"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'768},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32768 is not a valid year/ 1月/日[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{0},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/0 is not a valid month/日[1]"));
+  assert(
+      stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{-32'767},
+          std::chrono::month{1},
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 1}}) == SV("-32767/ 1月/8 is not a valid weekday[1]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 0}}) ==
+         SV("-32767/ 1月/日[0 is not a valid index]")); // note 0 is a valid index here...
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+             std::chrono::year{-32'767},
+             std::chrono::month{1},
+             std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) == SV("-32767/ 1月/日[1]"));
+
+  assert(
+      stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday(0), 1}}) ==
+      SV("1970/ 1月/日[1]"));
+#  endif // defined(_WIN32) || defined(_AIX)
+#endif   // defined(__APPLE__)
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..2ac8fa4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/time.cal.ymwd.nonmembers/plus.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+// constexpr year_month_weekday operator+(const year_month_weekday& ymd, const months& dm) noexcept;
+//   Returns: (ymd.year() / ymd.month() + dm) / ymd.day().
+//
+// constexpr year_month_weekday operator+(const months& dm, const year_month_weekday& ymd) noexcept;
+//   Returns: ymd + dm.
+//
+//
+// constexpr year_month_weekday operator+(const year_month_weekday& ymd, const years& dy) noexcept;
+//   Returns: (ymd.year() + dy) / ymd.month() / ymd.day().
+//
+// constexpr year_month_weekday operator+(const years& dy, const year_month_weekday& ymd) noexcept;
+//   Returns: ym + dm.
+
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool testConstexprYears(std::chrono::year_month_weekday ym)
+{
+    std::chrono::years offset{23};
+    if (static_cast<int>((ym         ).year()) !=  1) return false;
+    if (static_cast<int>((ym + offset).year()) != 24) return false;
+    if (static_cast<int>((offset + ym).year()) != 24) return false;
+    return true;
+}
+
+
+constexpr bool testConstexprMonths(std::chrono::year_month_weekday ym)
+{
+    std::chrono::months offset{6};
+    if (static_cast<unsigned>((ym         ).month()) !=  1) return false;
+    if (static_cast<unsigned>((ym + offset).month()) !=  7) return false;
+    if (static_cast<unsigned>((offset + ym).month()) !=  7) return false;
+    return true;
+}
+
+
+int main(int, char**)
+{
+    using year               = std::chrono::year;
+    using month              = std::chrono::month;
+    using weekday            = std::chrono::weekday;
+    using weekday_indexed    = std::chrono::weekday_indexed;
+    using year_month_weekday = std::chrono::year_month_weekday;
+    using years              = std::chrono::years;
+    using months             = std::chrono::months;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month January = std::chrono::January;
+
+    {   // year_month_weekday + months (and switched)
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday>() + std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month_weekday>());
+
+    ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<year_month_weekday>() + std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<months>() + std::declval<year_month_weekday>()));
+
+    static_assert(testConstexprMonths(year_month_weekday{year{1}, January, weekday_indexed{Tuesday, 1}}), "");
+
+    year_month_weekday ym{year{1234}, January, weekday_indexed{Tuesday, 3}};
+    for (int i = 0; i <= 10; ++i)  // TODO test wrap-around
+    {
+        year_month_weekday ym1 = ym + months{i};
+        year_month_weekday ym2 = months{i} + ym;
+        assert(static_cast<int>(ym1.year()) == 1234);
+        assert(static_cast<int>(ym2.year()) == 1234);
+        assert(ym1.month()   == month(1 + i));
+        assert(ym2.month()   == month(1 + i));
+        assert(ym1.weekday() == Tuesday);
+        assert(ym2.weekday() == Tuesday);
+        assert(ym1.index()   == 3);
+        assert(ym2.index()   == 3);
+        assert(ym1 == ym2);
+    }
+    }
+
+    {   // year_month_weekday + years (and switched)
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday>() + std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month_weekday>());
+
+    ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<year_month_weekday>() + std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_weekday, decltype(std::declval<years>() + std::declval<year_month_weekday>()));
+
+    static_assert(testConstexprYears (year_month_weekday{year{1}, January, weekday_indexed{Tuesday, 1}}), "");
+
+    year_month_weekday ym{year{1234}, std::chrono::January, weekday_indexed{Tuesday, 3}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_weekday ym1 = ym + years{i};
+        year_month_weekday ym2 = years{i} + ym;
+        assert(static_cast<int>(ym1.year()) == i + 1234);
+        assert(static_cast<int>(ym2.year()) == i + 1234);
+        assert(ym1.month()   == January);
+        assert(ym2.month()   == January);
+        assert(ym1.weekday() == Tuesday);
+        assert(ym2.weekday() == Tuesday);
+        assert(ym1.index()   == 3);
+        assert(ym2.index()   == 3);
+        assert(ym1 == ym2);
+    }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/types.pass.cpp
new file mode 100644
index 0000000..d37a961
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwd/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year_month_weekday = std::chrono::year_month_weekday;
+
+    static_assert(std::is_trivially_copyable_v<year_month_weekday>, "");
+    static_assert(std::is_standard_layout_v<year_month_weekday>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ctor.pass.cpp
new file mode 100644
index 0000000..519aad5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ctor.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+//  constexpr year_month_weekday_last(const chrono::year& y, const chrono::month& m,
+//                               const chrono::weekday_last& wdl) noexcept;
+//
+//  Effects:  Constructs an object of type year_month_weekday_last by initializing
+//                y_ with y, m_ with m, and wdl_ with wdl.
+//
+//  constexpr chrono::year                 year() const noexcept;
+//  constexpr chrono::month               month() const noexcept;
+//  constexpr chrono::weekday           weekday() const noexcept;
+//  constexpr chrono::weekday_last weekday_last() const noexcept;
+//  constexpr bool                           ok() const noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    constexpr month January = std::chrono::January;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    ASSERT_NOEXCEPT(year_month_weekday_last{year{1}, month{1}, weekday_last{Tuesday}});
+
+    constexpr year_month_weekday_last ym1{year{2019}, January, weekday_last{Tuesday}};
+    static_assert( ym1.year()         == year{2019},            "");
+    static_assert( ym1.month()        == January,               "");
+    static_assert( ym1.weekday()      == Tuesday,               "");
+    static_assert( ym1.weekday_last() == weekday_last{Tuesday}, "");
+    static_assert( ym1.ok(),                                    "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/month.pass.cpp
new file mode 100644
index 0000000..8515e87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/month.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr chrono::month month() const noexcept;
+//  Returns: wd_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    ASSERT_NOEXCEPT(                 std::declval<const year_month_weekday_last>().month());
+    ASSERT_SAME_TYPE(month, decltype(std::declval<const year_month_weekday_last>().month()));
+
+    static_assert( year_month_weekday_last{year{}, month{}, weekday_last{weekday{}}}.month() == month{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_weekday_last ymd(year{1234}, month{i}, weekday_last{weekday{}});
+        assert( static_cast<unsigned>(ymd.month()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ok.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ok.pass.cpp
new file mode 100644
index 0000000..81bc791
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ok.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr bool ok() const noexcept;
+//  Returns: y_.ok() && m_.ok() && wdl_.ok().
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    constexpr month January   = std::chrono::January;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_weekday_last>().ok());
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month_weekday_last>().ok()));
+
+    static_assert(!year_month_weekday_last{year{-32768}, month{}, weekday_last{weekday{}}}.ok(),  ""); // All three bad
+
+    static_assert(!year_month_weekday_last{year{-32768}, January, weekday_last{Tuesday}}.ok(),    ""); // Bad year
+    static_assert(!year_month_weekday_last{year{2019},   month{}, weekday_last{Tuesday}}.ok(),    ""); // Bad month
+    static_assert(!year_month_weekday_last{year{2019},   January, weekday_last{weekday{8}}}.ok(), ""); // Bad day
+
+    static_assert(!year_month_weekday_last{year{-32768}, month{}, weekday_last{Tuesday}}.ok(),    ""); // Bad year & month
+    static_assert(!year_month_weekday_last{year{2019},   month{}, weekday_last{weekday{8}}}.ok(), ""); // Bad month & day
+    static_assert(!year_month_weekday_last{year{-32768}, January, weekday_last{weekday{8}}}.ok(), ""); // Bad year & day
+
+    static_assert( year_month_weekday_last{year{2019},   January, weekday_last{Tuesday}}.ok(),    ""); // All OK
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_weekday_last ym{year{2019}, January, weekday_last{Tuesday}};
+        assert((ym.ok() == weekday_last{Tuesday}.ok()));
+    }
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_weekday_last ym{year{2019}, January, weekday_last{weekday{i}}};
+        assert((ym.ok() == weekday_last{weekday{i}}.ok()));
+    }
+
+    for (unsigned i = 0; i <= 50; ++i)
+    {
+        year_month_weekday_last ym{year{2019}, month{i}, weekday_last{Tuesday}};
+        assert((ym.ok() == month{i}.ok()));
+    }
+
+    const int ymax = static_cast<int>(year::max());
+    for (int i = ymax - 100; i <= ymax + 100; ++i)
+    {
+        year_month_weekday_last ym{year{i}, January, weekday_last{Tuesday}};
+        assert((ym.ok() == year{i}.ok()));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/op_local_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/op_local_days.pass.cpp
new file mode 100644
index 0000000..397aa29
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/op_local_days.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_day_last;
+
+// constexpr operator local_days() const noexcept;
+//  Returns: local_days{sys_days{*this}.time_since_epoch()}.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                = std::chrono::year;
+    using month_day_last      = std::chrono::month_day_last;
+    using year_month_day_last = std::chrono::year_month_day_last;
+    using local_days          = std::chrono::local_days;
+    using days                = std::chrono::days;
+
+    ASSERT_NOEXCEPT(                      static_cast<local_days>(std::declval<const year_month_day_last>()));
+    ASSERT_SAME_TYPE(local_days, decltype(static_cast<local_days>(std::declval<const year_month_day_last>())));
+
+    { // Last day in Jan 1970 was the 31st
+    constexpr year_month_day_last ymdl{year{1970}, month_day_last{std::chrono::January}};
+    constexpr local_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{30}, "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{2000}, month_day_last{std::chrono::January}};
+    constexpr local_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{10957+30}, "");
+    }
+
+    {
+    constexpr year_month_day_last ymdl{year{1940}, month_day_last{std::chrono::January}};
+    constexpr local_days sd{ymdl};
+
+    static_assert(sd.time_since_epoch() == days{-10957+29}, "");
+    }
+
+    {
+    year_month_day_last ymdl{year{1939}, month_day_last{std::chrono::November}};
+    local_days sd{ymdl};
+
+    assert(sd.time_since_epoch() == days{-(10957+33)});
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/op_sys_days.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/op_sys_days.pass.cpp
new file mode 100644
index 0000000..0418f5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/op_sys_days.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr operator sys_days() const noexcept;
+//  Returns: If ok() == true, returns a sys_days that represents the last weekday()
+//             of year()/month(). Otherwise the returned value is unspecified.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+    using sys_days                = std::chrono::sys_days;
+    using days                    = std::chrono::days;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+
+    ASSERT_NOEXCEPT(                    static_cast<sys_days>(std::declval<const year_month_weekday_last>()));
+    ASSERT_SAME_TYPE(sys_days, decltype(static_cast<sys_days>(std::declval<const year_month_weekday_last>())));
+
+    constexpr month   January = std::chrono::January;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    { // Last Tuesday in Jan 1970 was the 27th
+    constexpr year_month_weekday_last ymwdl{year{1970}, January, weekday_last{Tuesday}};
+    constexpr sys_days sd{ymwdl};
+
+    static_assert(sd.time_since_epoch() == days{26}, "");
+    }
+
+    { // Last Tuesday in Jan 2000 was the 25th
+    constexpr year_month_weekday_last ymwdl{year{2000}, January, weekday_last{Tuesday}};
+    constexpr sys_days sd{ymwdl};
+
+    static_assert(sd.time_since_epoch() == days{10957+24}, "");
+    }
+
+    { // Last Tuesday in Jan 1940 was the 30th
+    constexpr year_month_weekday_last ymwdl{year{1940}, January, weekday_last{Tuesday}};
+    constexpr sys_days sd{ymwdl};
+
+    static_assert(sd.time_since_epoch() == days{-10958+29}, "");
+    }
+
+    { // Last Tuesday in Nov 1939 was the 28th
+    year_month_weekday_last ymdl{year{1939}, std::chrono::November, weekday_last{Tuesday}};
+    sys_days sd{ymdl};
+
+    assert(sd.time_since_epoch() == days{-(10957+35)});
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_month.pass.cpp
new file mode 100644
index 0000000..76af1ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_month.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr year_month_weekday_last& operator+=(const months& m) noexcept;
+// constexpr year_month_weekday_last& operator-=(const months& m) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<unsigned>((d1          ).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 1}).month()) !=  2) return false;
+    if (static_cast<unsigned>((d1 += Ds{ 2}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 += Ds{12}).month()) !=  4) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 1}).month()) !=  3) return false;
+    if (static_cast<unsigned>((d1 -= Ds{ 2}).month()) !=  1) return false;
+    if (static_cast<unsigned>((d1 -= Ds{12}).month()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+    using months                  = std::chrono::months;
+
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday_last&>() += std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday_last&>() -= std::declval<months>());
+
+    ASSERT_SAME_TYPE(year_month_weekday_last&, decltype(std::declval<year_month_weekday_last&>() += std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_weekday_last&, decltype(std::declval<year_month_weekday_last&>() -= std::declval<months>()));
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    static_assert(testConstexpr<year_month_weekday_last, months>(year_month_weekday_last{year{1234}, month{1}, weekday_last{Tuesday}}), "");
+
+    for (unsigned i = 0; i <= 10; ++i)
+    {
+        year y{1234};
+        year_month_weekday_last ymwd(y, month{i}, weekday_last{Tuesday});
+
+        assert(static_cast<unsigned>((ymwd += months{2}).month()) == i + 2);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+
+        assert(static_cast<unsigned>((ymwd             ).month()) == i + 2);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+
+        assert(static_cast<unsigned>((ymwd -= months{1}).month()) == i + 1);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+
+        assert(static_cast<unsigned>((ymwd             ).month()) == i + 1);
+        assert(ymwd.year()     == y);
+        assert(ymwd.weekday()  == Tuesday);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_year.pass.cpp
new file mode 100644
index 0000000..6e16dfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/plus_minus_equal_year.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr year_month_weekday_last& operator+=(const years& d) noexcept;
+// constexpr year_month_weekday_last& operator-=(const years& d) noexcept;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename D, typename Ds>
+constexpr bool testConstexpr(D d1)
+{
+    if (static_cast<int>((d1          ).year()) !=  1) return false;
+    if (static_cast<int>((d1 += Ds{ 1}).year()) !=  2) return false;
+    if (static_cast<int>((d1 += Ds{ 2}).year()) !=  4) return false;
+    if (static_cast<int>((d1 += Ds{12}).year()) != 16) return false;
+    if (static_cast<int>((d1 -= Ds{ 1}).year()) != 15) return false;
+    if (static_cast<int>((d1 -= Ds{ 2}).year()) != 13) return false;
+    if (static_cast<int>((d1 -= Ds{12}).year()) !=  1) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+    using years                   = std::chrono::years;
+
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday_last&>() += std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday_last&>() -= std::declval<years>());
+
+    ASSERT_SAME_TYPE(year_month_weekday_last&, decltype(std::declval<year_month_weekday_last&>() += std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_weekday_last&, decltype(std::declval<year_month_weekday_last&>() -= std::declval<years>()));
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month January = std::chrono::January;
+
+    static_assert(testConstexpr<year_month_weekday_last, years>(year_month_weekday_last{year{1}, January, weekday_last{Tuesday}}), "");
+
+    for (int i = 1000; i <= 1010; ++i)
+    {
+        year_month_weekday_last ymwd(year{i}, January, weekday_last{Tuesday});
+
+        assert(static_cast<int>((ymwd += years{2}).year()) == i + 2);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+
+        assert(static_cast<int>((ymwd            ).year()) == i + 2);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+
+        assert(static_cast<int>((ymwd -= years{1}).year()) == i + 1);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+
+        assert(static_cast<int>((ymwd            ).year()) == i + 1);
+        assert(ymwd.month()    == January);
+        assert(ymwd.weekday()  == Tuesday);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/weekday.pass.cpp
new file mode 100644
index 0000000..b277e21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/weekday.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr chrono::weekday weekday() const noexcept;
+//  Returns: wdi_.weekday()
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    ASSERT_NOEXCEPT(                   std::declval<const year_month_weekday_last>().weekday());
+    ASSERT_SAME_TYPE(weekday, decltype(std::declval<const year_month_weekday_last>().weekday()));
+
+    static_assert( year_month_weekday_last{year{}, month{}, weekday_last{weekday{}}}.weekday() == weekday{}, "");
+
+    for (unsigned i = 1; i <= 50; ++i)
+    {
+        year_month_weekday_last ymwdl(year{1}, month{1}, weekday_last{weekday{i}});
+        assert(ymwdl.weekday().c_encoding() == (i == 7 ? 0 : i));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/year.pass.cpp
new file mode 100644
index 0000000..22f82bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/year.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr chrono::year year() const noexcept;
+//  Returns: d_
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    ASSERT_NOEXCEPT(                std::declval<const year_month_weekday_last>().year());
+    ASSERT_SAME_TYPE(year, decltype(std::declval<const year_month_weekday_last>().year()));
+
+    static_assert( year_month_weekday_last{year{}, month{}, weekday_last{weekday{}}}.year() == year{}, "");
+
+    for (int i = 1; i <= 50; ++i)
+    {
+        year_month_weekday_last ymwdl(year{i}, month{1}, weekday_last{weekday{}});
+        assert(static_cast<int>(ymwdl.year()) == i);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/comparisons.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/comparisons.pass.cpp
new file mode 100644
index 0000000..6f6ab43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/comparisons.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr bool operator==(const year_month_weekday_last& x, const year_month_weekday_last& y) noexcept;
+//   Returns: x.year() == y.year() && x.month() == y.month() && x.weekday_last() == y.weekday_last()
+//
+
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    AssertEqualityAreNoexcept<year_month_weekday_last>();
+    AssertEqualityReturnBool<year_month_weekday_last>();
+
+    constexpr month January   = std::chrono::January;
+    constexpr month February  = std::chrono::February;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr weekday Wednesday = std::chrono::Wednesday;
+
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, January, weekday_last{Tuesday}},
+        year_month_weekday_last{year{1234}, January, weekday_last{Tuesday}},
+        true), "");
+
+    // different day
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, January, weekday_last{Tuesday}},
+        year_month_weekday_last{year{1234}, January, weekday_last{Wednesday}},
+        false), "");
+
+    // different month
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, January,  weekday_last{Tuesday}},
+        year_month_weekday_last{year{1234}, February, weekday_last{Tuesday}},
+        false), "");
+
+    // different year
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, January, weekday_last{Tuesday}},
+        year_month_weekday_last{year{1235}, January, weekday_last{Tuesday}},
+        false), "");
+
+
+    // different month and day
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, January,  weekday_last{Tuesday}},
+        year_month_weekday_last{year{1234}, February, weekday_last{Wednesday}},
+        false), "");
+
+    // different year and month
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, February, weekday_last{Tuesday}},
+        year_month_weekday_last{year{1235}, January,  weekday_last{Tuesday}},
+        false), "");
+
+    // different year and day
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, January, weekday_last{Wednesday}},
+        year_month_weekday_last{year{1235}, January, weekday_last{Tuesday}},
+        false), "");
+
+    // different year, month and day
+    static_assert( testEquality(
+        year_month_weekday_last{year{1234}, February, weekday_last{Wednesday}},
+        year_month_weekday_last{year{1235}, January,  weekday_last{Tuesday}},
+        false), "");
+
+
+    // same year, different days
+    for (unsigned i = 1; i < 28; ++i)
+        for (unsigned j = 1; j < 28; ++j)
+            assert((testEquality(
+                year_month_weekday_last{year{1234}, January, weekday_last{weekday{i}}},
+                year_month_weekday_last{year{1234}, January, weekday_last{weekday{j}}},
+                i == j)));
+
+    // same year, different months
+    for (unsigned i = 1; i < 12; ++i)
+        for (unsigned j = 1; j < 12; ++j)
+            assert((testEquality(
+                year_month_weekday_last{year{1234}, month{i}, weekday_last{Tuesday}},
+                year_month_weekday_last{year{1234}, month{j}, weekday_last{Tuesday}},
+                i == j)));
+
+    // same month, different years
+    for (int i = 1000; i < 2000; ++i)
+        for (int j = 1000; j < 2000; ++j)
+        assert((testEquality(
+            year_month_weekday_last{year{i}, January, weekday_last{Tuesday}},
+            year_month_weekday_last{year{j}, January, weekday_last{Tuesday}},
+            i == j)));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/minus.pass.cpp
new file mode 100644
index 0000000..3bc701f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/minus.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr year_month_weekday_last operator-(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
+//   Returns: ymwdl + (-dm).
+//
+// constexpr year_month_weekday_last operator-(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
+//   Returns: ymwdl + (-dy).
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+constexpr bool testConstexprYears(std::chrono::year_month_weekday_last ym)
+{
+    std::chrono::years offset{14};
+    if (static_cast<int>((ym         ).year()) != 66) return false;
+    if (static_cast<int>((ym - offset).year()) != 52) return false;
+    return true;
+}
+
+constexpr bool testConstexprMonths(std::chrono::year_month_weekday_last ym)
+{
+    std::chrono::months offset{6};
+    if (static_cast<unsigned>((ym         ).month()) != 10) return false;
+    if (static_cast<unsigned>((ym - offset).month()) !=  4) return false;
+    return true;
+}
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+    using years                   = std::chrono::years;
+    using months                  = std::chrono::months;
+
+    constexpr month October = std::chrono::October;
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+
+    { // year_month_weekday_last - years
+
+    ASSERT_NOEXCEPT(                                   std::declval<year_month_weekday_last>() - std::declval<years>());
+    ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<year_month_weekday_last>() - std::declval<years>()));
+
+    static_assert(testConstexprYears(year_month_weekday_last{year{66}, October, weekday_last{Tuesday}}), "");
+
+    year_month_weekday_last ym{year{1234}, October, weekday_last{Tuesday}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_weekday_last ym1 = ym - years{i};
+        assert(ym1.year()         == year{1234 - i});
+        assert(ym1.month()        == October);
+        assert(ym1.weekday()      == Tuesday);
+        assert(ym1.weekday_last() == weekday_last{Tuesday});
+    }
+    }
+
+    { // year_month_weekday_last - months
+
+    ASSERT_NOEXCEPT(                                   std::declval<year_month_weekday_last>() - std::declval<months>());
+    ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<year_month_weekday_last>() - std::declval<months>()));
+
+    static_assert(testConstexprMonths(year_month_weekday_last{year{66}, October, weekday_last{Tuesday}}), "");
+
+    year_month_weekday_last ym{year{1234}, October, weekday_last{Tuesday}};
+    for (unsigned i = 0; i < 10; ++i)
+    {
+        year_month_weekday_last ym1 = ym - months{i};
+        assert(ym1.year()         == year{1234});
+        assert(ym1.month()        == month{10 - i});
+        assert(ym1.weekday()      == Tuesday);
+        assert(ym1.weekday_last() == weekday_last{Tuesday});
+    }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/ostream.pass.cpp
new file mode 100644
index 0000000..1508133
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/ostream.pass.cpp
@@ -0,0 +1,185 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// class year_month_weekday_last;
+
+// template<class charT, class traits>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os, const year_month_weekday_last& ymwdl);
+
+#include <chrono>
+#include <cassert>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+static std::basic_string<CharT> stream_c_locale(std::chrono::year_month_weekday_last ymwdl) {
+  std::basic_stringstream<CharT> sstr;
+  sstr << ymwdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::year_month_weekday_last ymwdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymwdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::year_month_weekday_last ymwdl) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr << ymwdl;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test() {
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32768 is not a valid year/Jan/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/0 is not a valid month/Sun[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("-32767/Jan/8 is not a valid weekday[last]"));
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/Jan/Sun[last]"));
+
+  assert(stream_c_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("1970/Jan/Sun[last]"));
+
+#if defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32768 is not a valid year/jan/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/0 is not a valid month/Dim[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("-32767/jan/8 is not a valid weekday[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/jan/Dim[last]"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("1970/jan/Dim[last]"));
+#else  //  defined(__APPLE__)
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32768 is not a valid year/janv./dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/0 is not a valid month/dim.[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("-32767/janv./8 is not a valid weekday[last]"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/janv./dim.[last]"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("1970/janv./dim.[last]"));
+#endif //  defined(__APPLE__)
+
+#if defined(__APPLE__)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32768 is not a valid year/ 1/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/0 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("-32767/ 1/8 is not a valid weekday[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/ 1/日[last]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("1970/ 1/日[last]"));
+#else    // defined(__APPLE__)
+#  if defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32768 is not a valid year/1月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/0 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("-32767/1月/8 is not a valid weekday[last]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/1月/日[last]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("1970/1月/日[last]"));
+#  else  // defined(_WIN32) || defined(_AIX)
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32768 is not a valid year/ 1月/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/0 is not a valid month/日[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}}) ==
+         SV("-32767/ 1月/8 is not a valid weekday[last]"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{-32'767}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("-32767/ 1月/日[last]"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::year_month_weekday_last{
+             std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{0}}}) ==
+         SV("1970/ 1月/日[last]"));
+#  endif // defined(_WIN32) || defined(_AIX)
+#endif   // defined(__APPLE__)
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/plus.pass.cpp
new file mode 100644
index 0000000..47c49c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.nonmembers/plus.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last;
+
+// constexpr year_month_weekday_last operator+(const year_month_weekday_last& ymwdl, const months& dm) noexcept;
+//   Returns: (ymwdl.year() / ymwdl.month() + dm) / ymwdl.weekday_last().
+//
+// constexpr year_month_weekday_last operator+(const months& dm, const year_month_weekday_last& ymwdl) noexcept;
+//   Returns: ymwdl + dm.
+//
+// constexpr year_month_weekday_last operator+(const year_month_weekday_last& ymwdl, const years& dy) noexcept;
+//   Returns: {ymwdl.year()+dy, ymwdl.month(), ymwdl.weekday_last()}.
+//
+// constexpr year_month_weekday_last operator+(const years& dy, const year_month_weekday_last& ymwdl) noexcept;
+//   Returns: ymwdl + dy.
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool testConstexprYears(std::chrono::year_month_weekday_last ym)
+{
+    std::chrono::years offset{23};
+    if (static_cast<int>((ym         ).year()) !=  1) return false;
+    if (static_cast<int>((ym + offset).year()) != 24) return false;
+    if (static_cast<int>((offset + ym).year()) != 24) return false;
+    return true;
+}
+
+constexpr bool testConstexprMonths(std::chrono::year_month_weekday_last ym)
+{
+    std::chrono::months offset{6};
+    if (static_cast<unsigned>((ym         ).month()) !=  1) return false;
+    if (static_cast<unsigned>((ym + offset).month()) !=  7) return false;
+    if (static_cast<unsigned>((offset + ym).month()) !=  7) return false;
+    return true;
+}
+
+
+int main(int, char**)
+{
+    using year                    = std::chrono::year;
+    using month                   = std::chrono::month;
+    using weekday                 = std::chrono::weekday;
+    using weekday_last            = std::chrono::weekday_last;
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+    using years                   = std::chrono::years;
+    using months                  = std::chrono::months;
+
+    constexpr weekday Tuesday = std::chrono::Tuesday;
+    constexpr month January = std::chrono::January;
+
+    {   // year_month_weekday_last + months
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday_last>() + std::declval<months>());
+    ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month_weekday_last>());
+
+    ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<year_month_weekday_last>() + std::declval<months>()));
+    ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<months>() + std::declval<year_month_weekday_last>()));
+
+    static_assert(testConstexprMonths(year_month_weekday_last{year{1}, January, weekday_last{Tuesday}}), "");
+
+    year_month_weekday_last ym{year{1234}, January, weekday_last{Tuesday}};
+    for (int i = 0; i <= 10; ++i)  // TODO test wrap-around
+    {
+        year_month_weekday_last ym1 = ym + months{i};
+        year_month_weekday_last ym2 = months{i} + ym;
+        assert(ym1.year()         == year(1234));
+        assert(ym2.year()         == year(1234));
+        assert(ym1.month()        == month(1 + i));
+        assert(ym2.month()        == month(1 + i));
+        assert(ym1.weekday()      == Tuesday);
+        assert(ym2.weekday()      == Tuesday);
+        assert(ym1.weekday_last() == weekday_last{Tuesday});
+        assert(ym2.weekday_last() == weekday_last{Tuesday});
+        assert(ym1 == ym2);
+    }
+    }
+
+    {   // year_month_weekday_last + years
+    ASSERT_NOEXCEPT(std::declval<year_month_weekday_last>() + std::declval<years>());
+    ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month_weekday_last>());
+
+    ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<year_month_weekday_last>() + std::declval<years>()));
+    ASSERT_SAME_TYPE(year_month_weekday_last, decltype(std::declval<years>() + std::declval<year_month_weekday_last>()));
+
+    static_assert(testConstexprYears (year_month_weekday_last{year{1}, January, weekday_last{Tuesday}}), "");
+
+    year_month_weekday_last ym{year{1234}, std::chrono::January, weekday_last{Tuesday}};
+    for (int i = 0; i <= 10; ++i)
+    {
+        year_month_weekday_last ym1 = ym + years{i};
+        year_month_weekday_last ym2 = years{i} + ym;
+        assert(ym1.year()         == year(1234 + i));
+        assert(ym2.year()         == year(1234 + i));
+        assert(ym1.month()        == January);
+        assert(ym2.month()        == January);
+        assert(ym1.weekday()      == Tuesday);
+        assert(ym2.weekday()      == Tuesday);
+        assert(ym1.weekday_last() == weekday_last{Tuesday});
+        assert(ym2.weekday_last() == weekday_last{Tuesday});
+        assert(ym1 == ym2);
+    }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/types.pass.cpp
new file mode 100644
index 0000000..56a200f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.cal/time.cal.ymwdlast/types.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+// class year_month_weekday_last_last;
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using year_month_weekday_last = std::chrono::year_month_weekday_last;
+
+    static_assert(std::is_trivially_copyable_v<year_month_weekday_last>, "");
+    static_assert(std::is_standard_layout_v<year_month_weekday_last>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock.req/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock.req/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock.req/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/consistency.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/consistency.pass.cpp
new file mode 100644
index 0000000..cb49c59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/consistency.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Due to C++17 inline variables ASAN flags this test as containing an ODR
+// violation because Clock::is_steady is defined in both the dylib and this TU.
+// UNSUPPORTED: asan
+
+// <chrono>
+
+// file_clock
+
+// check clock invariants
+
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+int main(int, char**)
+{
+    typedef std::chrono::file_clock C;
+    static_assert((std::is_same<C::rep, C::duration::rep>::value), "");
+    static_assert((std::is_same<C::period, C::duration::period>::value), "");
+    static_assert((std::is_same<C::duration, C::time_point::duration>::value), "");
+    static_assert((std::is_same<C::time_point::clock, C>::value), "");
+    static_assert(!C::is_steady, "");
+    test(std::chrono::file_clock::is_steady);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/file_time.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/file_time.pass.cpp
new file mode 100644
index 0000000..be5a1c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/file_time.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// file_time
+
+#include <chrono>
+
+#include "test_macros.h"
+
+template <class Dur>
+void test() {
+  ASSERT_SAME_TYPE(std::chrono::file_time<Dur>, std::chrono::time_point<std::chrono::file_clock, Dur>);
+}
+
+int main(int, char**) {
+  test<std::chrono::nanoseconds>();
+  test<std::chrono::minutes>();
+  test<std::chrono::hours>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/now.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/now.pass.cpp
new file mode 100644
index 0000000..ad3daf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/now.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <chrono>
+
+// file_clock
+
+// static time_point now() noexcept;
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::file_clock C;
+    ASSERT_NOEXCEPT(C::now());
+
+    C::time_point t1 = C::now();
+    assert(t1.time_since_epoch().count() != 0);
+    assert(C::time_point::min() < t1);
+    assert(C::time_point::max() > t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/rep_signed.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/rep_signed.pass.cpp
new file mode 100644
index 0000000..ca7e128
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/rep_signed.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// file_clock
+
+// rep should be signed
+
+#include <chrono>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_signed<std::chrono::file_clock::rep>::value, "");
+    assert(std::chrono::file_clock::duration::min() <
+           std::chrono::file_clock::duration::zero());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/to_from_sys.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/to_from_sys.pass.cpp
new file mode 100644
index 0000000..df84bee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.file/to_from_sys.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-filesystem
+
+// Filesystem is supported on Apple platforms starting with macosx10.15.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14}}
+
+// <chrono>
+//
+// file_clock
+//
+// template<class Duration>
+// static sys_time<see-below> to_sys(const file_time<Duration>&);
+//
+// template<class Duration>
+// static file_time<see-below> from_sys(const sys_time<Duration>&);
+
+#include <chrono>
+#include <cassert>
+
+int main(int, char**) {
+  // Test round-trip through the system clock, starting from file_clock::now()
+  {
+    std::chrono::file_clock::time_point const ft = std::chrono::file_clock::now();
+    auto st = std::chrono::file_clock::to_sys(ft);
+    assert(ft == std::chrono::file_clock::from_sys(st));
+  }
+
+  // Test round-trip through the system clock, starting from system_clock::now()
+  {
+    std::chrono::system_clock::time_point const st = std::chrono::system_clock::now();
+    auto ft = std::chrono::file_clock::from_sys(st);
+    assert(st == std::chrono::file_clock::to_sys(ft));
+  }
+
+  // Make sure the value we get is in the ballpark of something reasonable
+  {
+    std::chrono::file_clock::time_point const file_now = std::chrono::file_clock::now();
+    std::chrono::system_clock::time_point const sys_now = std::chrono::system_clock::now();
+    {
+      auto diff = sys_now - std::chrono::file_clock::to_sys(file_now);
+      assert(std::chrono::milliseconds(-500) < diff && diff < std::chrono::milliseconds(500));
+    }
+    {
+      auto diff = std::chrono::file_clock::from_sys(sys_now) - file_now;
+      assert(std::chrono::milliseconds(-500) < diff && diff < std::chrono::milliseconds(500));
+    }
+  }
+
+  // Make sure to_sys and from_sys are consistent with each other
+  {
+    std::chrono::file_clock::time_point const ft = std::chrono::file_clock::now();
+    std::chrono::system_clock::time_point const st = std::chrono::system_clock::now();
+    auto sys_diff = std::chrono::file_clock::to_sys(ft) - st;
+    auto file_diff = ft - std::chrono::file_clock::from_sys(st);
+    assert(sys_diff == file_diff);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.hires/consistency.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.hires/consistency.pass.cpp
new file mode 100644
index 0000000..ad1bce8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.hires/consistency.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Due to C++17 inline variables ASAN flags this test as containing an ODR
+// violation because Clock::is_steady is defined in both the dylib and this TU.
+// UNSUPPORTED: asan
+
+// <chrono>
+
+// high_resolution_clock
+
+// check clock invariants
+
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+int main(int, char**)
+{
+    typedef std::chrono::high_resolution_clock C;
+    static_assert((std::is_same<C::rep, C::duration::rep>::value), "");
+    static_assert((std::is_same<C::period, C::duration::period>::value), "");
+    static_assert((std::is_same<C::duration, C::time_point::duration>::value), "");
+    static_assert(C::is_steady || !C::is_steady, "");
+    test(std::chrono::high_resolution_clock::is_steady);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.hires/now.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.hires/now.pass.cpp
new file mode 100644
index 0000000..db1fb55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.hires/now.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// high_resolution_clock
+
+// static time_point now();
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::high_resolution_clock C;
+    C::time_point t1 = C::now();
+    assert(t1.time_since_epoch().count() != 0);
+    assert(C::time_point::min() < t1);
+    assert(C::time_point::max() > t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.steady/consistency.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.steady/consistency.pass.cpp
new file mode 100644
index 0000000..fa0ff4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.steady/consistency.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-monotonic-clock
+
+// Due to C++17 inline variables ASAN flags this test as containing an ODR
+// violation because Clock::is_steady is defined in both the dylib and this TU.
+// UNSUPPORTED: asan
+
+// <chrono>
+
+// steady_clock
+
+// check clock invariants
+
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+int main(int, char**)
+{
+    typedef std::chrono::steady_clock C;
+    static_assert((std::is_same<C::rep, C::duration::rep>::value), "");
+    static_assert((std::is_same<C::period, C::duration::period>::value), "");
+    static_assert((std::is_same<C::duration, C::time_point::duration>::value), "");
+    static_assert(C::is_steady, "");
+    test(std::chrono::steady_clock::is_steady);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.steady/now.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.steady/now.pass.cpp
new file mode 100644
index 0000000..1d439a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.steady/now.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-monotonic-clock
+
+// <chrono>
+
+// steady_clock
+
+// static time_point now();
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::steady_clock C;
+    C::time_point t1 = C::now();
+    C::time_point t2 = C::now();
+    assert(t2 >= t1);
+    // make sure t2 didn't wrap around
+    assert(t2 > std::chrono::time_point<C>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/consistency.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/consistency.pass.cpp
new file mode 100644
index 0000000..124e9fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/consistency.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Due to C++17 inline variables ASAN flags this test as containing an ODR
+// violation because Clock::is_steady is defined in both the dylib and this TU.
+// UNSUPPORTED: asan
+
+// <chrono>
+
+// system_clock
+
+// check clock invariants
+
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test(const T &) {}
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock C;
+    static_assert((std::is_same<C::rep, C::duration::rep>::value), "");
+    static_assert((std::is_same<C::period, C::duration::period>::value), "");
+    static_assert((std::is_same<C::duration, C::time_point::duration>::value), "");
+    static_assert((std::is_same<C::time_point::clock, C>::value), "");
+    static_assert((C::is_steady || !C::is_steady), "");
+    test(std::chrono::system_clock::is_steady);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/from_time_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/from_time_t.pass.cpp
new file mode 100644
index 0000000..70dd811
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/from_time_t.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// system_clock
+
+// static time_point from_time_t(time_t t);
+
+#include <chrono>
+#include <ctime>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock C;
+    C::time_point t1 = C::from_time_t(C::to_time_t(C::now()));
+    ((void)t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/local_time.types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/local_time.types.pass.cpp
new file mode 100644
index 0000000..c012b98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/local_time.types.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// struct local_t {};
+// template<class Duration>
+//   using local_time  = time_point<system_clock, Duration>;
+// using local_seconds = sys_time<seconds>;
+// using local_days    = sys_time<days>;
+
+// [Example:
+//   sys_seconds{sys_days{1970y/January/1}}.time_since_epoch() is 0s.
+//   sys_seconds{sys_days{2000y/January/1}}.time_since_epoch() is 946'684'800s, which is 10'957 * 86'400s.
+// - end example]
+
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using local_t = std::chrono::local_t;
+    using year    = std::chrono::year;
+
+    using seconds = std::chrono::seconds;
+    using minutes = std::chrono::minutes;
+    using days    = std::chrono::days;
+
+    using local_seconds = std::chrono::local_seconds;
+    using local_minutes = std::chrono::local_time<minutes>;
+    using local_days    = std::chrono::local_days;
+
+    constexpr std::chrono::month January = std::chrono::January;
+
+    ASSERT_SAME_TYPE(std::chrono::local_time<seconds>, local_seconds);
+    ASSERT_SAME_TYPE(std::chrono::local_time<days>,    local_days);
+
+//  Test the long form, too
+    ASSERT_SAME_TYPE(std::chrono::time_point<local_t, seconds>, local_seconds);
+    ASSERT_SAME_TYPE(std::chrono::time_point<local_t, minutes>, local_minutes);
+    ASSERT_SAME_TYPE(std::chrono::time_point<local_t, days>,    local_days);
+
+//  Test some well known values
+    local_days d0 = local_days{year{1970}/January/1};
+    local_days d1 = local_days{year{2000}/January/1};
+    ASSERT_SAME_TYPE(decltype(d0.time_since_epoch()), days);
+    assert( d0.time_since_epoch().count() == 0);
+    assert( d1.time_since_epoch().count() == 10957);
+
+    local_seconds s0{d0};
+    local_seconds s1{d1};
+    ASSERT_SAME_TYPE(decltype(s0.time_since_epoch()), seconds);
+    assert( s0.time_since_epoch().count() == 0);
+    assert( s1.time_since_epoch().count() == 946684800L);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/now.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/now.pass.cpp
new file mode 100644
index 0000000..dade6ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/now.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// system_clock
+
+// static time_point now();
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock C;
+    C::time_point t1 = C::now();
+    assert(t1.time_since_epoch().count() != 0);
+    assert(C::time_point::min() < t1);
+    assert(C::time_point::max() > t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/rep_signed.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/rep_signed.pass.cpp
new file mode 100644
index 0000000..69546a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/rep_signed.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// system_clock
+
+// rep should be signed
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    assert(std::chrono::system_clock::duration::min() <
+           std::chrono::system_clock::duration::zero());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/sys.time.types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/sys.time.types.pass.cpp
new file mode 100644
index 0000000..206967a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/sys.time.types.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// template<class Duration>
+//   using sys_time  = time_point<system_clock, Duration>;
+// using sys_seconds = sys_time<seconds>;
+// using sys_days    = sys_time<days>;
+
+// [Example:
+//   sys_seconds{sys_days{1970y/January/1}}.time_since_epoch() is 0s.
+//   sys_seconds{sys_days{2000y/January/1}}.time_since_epoch() is 946'684'800s, which is 10'957 * 86'400s.
+// - end example]
+
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using system_clock = std::chrono::system_clock;
+    using year         = std::chrono::year;
+
+    using seconds = std::chrono::seconds;
+    using minutes = std::chrono::minutes;
+    using days    = std::chrono::days;
+
+    using sys_seconds = std::chrono::sys_seconds;
+    using sys_minutes = std::chrono::sys_time<minutes>;
+    using sys_days    = std::chrono::sys_days;
+
+    constexpr std::chrono::month January = std::chrono::January;
+
+    ASSERT_SAME_TYPE(std::chrono::sys_time<seconds>, sys_seconds);
+    ASSERT_SAME_TYPE(std::chrono::sys_time<days>,    sys_days);
+
+//  Test the long form, too
+    ASSERT_SAME_TYPE(std::chrono::time_point<system_clock, seconds>, sys_seconds);
+    ASSERT_SAME_TYPE(std::chrono::time_point<system_clock, minutes>, sys_minutes);
+    ASSERT_SAME_TYPE(std::chrono::time_point<system_clock, days>,    sys_days);
+
+//  Test some well known values
+    sys_days d0 = sys_days{year{1970}/January/1};
+    sys_days d1 = sys_days{year{2000}/January/1};
+    ASSERT_SAME_TYPE(decltype(d0.time_since_epoch()), days);
+    assert( d0.time_since_epoch().count() == 0);
+    assert( d1.time_since_epoch().count() == 10957);
+
+    sys_seconds s0{d0};
+    sys_seconds s1{d1};
+    ASSERT_SAME_TYPE(decltype(s0.time_since_epoch()), seconds);
+    assert( s0.time_since_epoch().count() == 0);
+    assert( s1.time_since_epoch().count() == 946684800L);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/to_time_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/to_time_t.pass.cpp
new file mode 100644
index 0000000..bf4339c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.clock/time.clock.system/to_time_t.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// system_clock
+
+// time_t to_time_t(const time_point& t);
+
+#include <chrono>
+#include <ctime>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock C;
+    std::time_t t1 = C::to_time_t(C::now());
+    ((void)t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/default_ratio.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/default_ratio.pass.cpp
new file mode 100644
index 0000000..05bf8a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/default_ratio.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// Test default template arg:
+
+// template <class Rep, class Period = ratio<1>>
+// class duration;
+
+#include <chrono>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::chrono::duration<int, std::ratio<1> >,
+                   std::chrono::duration<int> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/duration.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/duration.compile.fail.cpp
new file mode 100644
index 0000000..02029c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/duration.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// If a program instantiates duration with a duration type for the template
+// argument Rep a diagnostic is required.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    typedef std::chrono::duration<std::chrono::milliseconds> D;
+    D d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/positive_num.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/positive_num.compile.fail.cpp
new file mode 100644
index 0000000..7375762
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/positive_num.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// Period::num shall be positive, diagnostic required.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    typedef std::chrono::duration<int, std::ratio<5, -1> > D;
+    D d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/ratio.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/ratio.compile.fail.cpp
new file mode 100644
index 0000000..20298b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/ratio.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// Period shall be a specialization of ratio, diagnostic required.
+
+#include <chrono>
+
+template <int N, int D = 1>
+class Ratio
+{
+public:
+    static const int num = N;
+    static const int den = D;
+};
+
+int main(int, char**)
+{
+    typedef std::chrono::duration<int, Ratio<1> > D;
+    D d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.alg/abs.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.alg/abs.compile.fail.cpp
new file mode 100644
index 0000000..8d807c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.alg/abs.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// ceil
+
+// template <class Rep, class Period>
+//   constexpr duration<Rep, Period> abs(duration<Rep, Period> d)
+
+// This function shall not participate in overload resolution unless numeric_limits<Rep>::is_signed is true.
+
+#include <chrono>
+
+typedef std::chrono::duration<unsigned> unsigned_secs;
+
+int main(int, char**)
+{
+    std::chrono::abs(unsigned_secs(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.alg/abs.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.alg/abs.pass.cpp
new file mode 100644
index 0000000..f95d42b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.alg/abs.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <chrono>
+
+// abs
+
+// template <class Rep, class Period>
+//   constexpr duration<Rep, Period> abs(duration<Rep, Period> d)
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Duration>
+void
+test(const Duration& f, const Duration& d)
+{
+    {
+    typedef decltype(std::chrono::abs(f)) R;
+    static_assert((std::is_same<R, Duration>::value), "");
+    assert(std::chrono::abs(f) == d);
+    }
+}
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::milliseconds( 7290000));
+    test(std::chrono::milliseconds(-7290000), std::chrono::milliseconds( 7290000));
+    test(std::chrono::minutes( 122), std::chrono::minutes( 122));
+    test(std::chrono::minutes(-122), std::chrono::minutes( 122));
+    test(std::chrono::hours(0), std::chrono::hours(0));
+
+    {
+//  9000000ms is 2 hours and 30 minutes
+    constexpr std::chrono::hours h1 = std::chrono::abs(std::chrono::hours(-3));
+    static_assert(h1.count() == 3, "");
+    constexpr std::chrono::hours h2 = std::chrono::abs(std::chrono::hours(3));
+    static_assert(h2.count() == 3, "");
+    }
+
+    {
+//  Make sure it works for durations that are not LCD'ed - example from LWG3091
+    constexpr auto d = std::chrono::abs(std::chrono::duration<int, std::ratio<60, 100>>{2});
+    static_assert(d.count() == 2, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_++.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_++.pass.cpp
new file mode 100644
index 0000000..d0e47b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_++.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr duration& operator++();  // constexpr in C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::hours h(3);
+    return (++h).count() == 4;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::hours h(3);
+    std::chrono::hours& href = ++h;
+    assert(&href == &h);
+    assert(h.count() == 4);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_++int.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_++int.pass.cpp
new file mode 100644
index 0000000..084819a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_++int.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr duration operator++(int);  // constexpr in C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::hours h1(3);
+    std::chrono::hours h2 = h1++;
+    return h1.count() == 4 && h2.count() == 3;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::hours h1(3);
+    std::chrono::hours h2 = h1++;
+    assert(h1.count() == 4);
+    assert(h2.count() == 3);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_+.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_+.pass.cpp
new file mode 100644
index 0000000..192448a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_+.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr common_type_t<duration> operator+() const;
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::chrono::minutes m(3);
+    std::chrono::minutes m2 = +m;
+    assert(m.count() == m2.count());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::minutes m(3);
+    constexpr std::chrono::minutes m2 = +m;
+    static_assert(m.count() == m2.count(), "");
+    }
+#endif
+
+// P0548
+    {
+    typedef std::chrono::duration<int, std::ratio<10,10> > D10;
+    typedef std::chrono::duration<int, std::ratio< 1, 1> > D1;
+    D10 zero(0);
+    D10 one(1);
+    static_assert( (std::is_same< decltype(+one), decltype(zero-one) >::value), "");
+    static_assert( (std::is_same< decltype(zero+one), D1>::value), "");
+    static_assert( (std::is_same< decltype(+one),     D1>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_+=.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_+=.pass.cpp
new file mode 100644
index 0000000..4247f2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_+=.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr duration& operator+=(const duration& d); // constexpr in C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::seconds s(3);
+    s += std::chrono::seconds(2);
+    if (s.count() != 5) return false;
+    s += std::chrono::minutes(2);
+    return s.count() == 125;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::seconds s(3);
+    s += std::chrono::seconds(2);
+    assert(s.count() == 5);
+    s += std::chrono::minutes(2);
+    assert(s.count() == 125);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_--.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_--.pass.cpp
new file mode 100644
index 0000000..cfdb707
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_--.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr duration& operator--();  // constexpr in C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::hours h(3);
+    return (--h).count() == 2;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::hours h(3);
+    std::chrono::hours& href = --h;
+    assert(&href == &h);
+    assert(h.count() == 2);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_--int.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_--int.pass.cpp
new file mode 100644
index 0000000..4afb86e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_--int.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr duration operator--(int);   // constexpr in C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::hours h1(3);
+    std::chrono::hours h2 = h1--;
+    return h1.count() == 2 && h2.count() == 3;
+}
+#endif
+
+
+int main(int, char**)
+{
+    {
+    std::chrono::hours h1(3);
+    std::chrono::hours h2 = h1--;
+    assert(h1.count() == 2);
+    assert(h2.count() == 3);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_-.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_-.pass.cpp
new file mode 100644
index 0000000..533547d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_-.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// constexpr common_type_t<duration> operator-() const;
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    const std::chrono::minutes m(3);
+    std::chrono::minutes m2 = -m;
+    assert(m2.count() == -m.count());
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::minutes m(3);
+    constexpr std::chrono::minutes m2 = -m;
+    static_assert(m2.count() == -m.count(), "");
+    }
+#endif
+
+// P0548
+    {
+    typedef std::chrono::duration<int, std::ratio<10,10> > D10;
+    typedef std::chrono::duration<int, std::ratio< 1, 1> > D1;
+    D10 zero(0);
+    D10 one(1);
+    static_assert( (std::is_same< decltype(-one), decltype(zero-one) >::value), "");
+    static_assert( (std::is_same< decltype(zero-one), D1>::value), "");
+    static_assert( (std::is_same< decltype(-one),     D1>::value), "");
+    static_assert( (std::is_same< decltype(+one),     D1>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_-=.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_-=.pass.cpp
new file mode 100644
index 0000000..b457619
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_-=.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration& operator-=(const duration& d);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::seconds s(3);
+    s -= std::chrono::seconds(2);
+    if (s.count() != 1) return false;
+    s -= std::chrono::minutes(2);
+    return s.count() == -119;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::seconds s(3);
+    s -= std::chrono::seconds(2);
+    assert(s.count() == 1);
+    s -= std::chrono::minutes(2);
+    assert(s.count() == -119);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_divide=.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_divide=.pass.cpp
new file mode 100644
index 0000000..64b08a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_divide=.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration& operator/=(const rep& rhs);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::seconds s(15);
+    s /= 5;
+    return s.count() == 3;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::nanoseconds ns(15);
+    ns /= 5;
+    assert(ns.count() == 3);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is PR#41130
+    std::chrono::nanoseconds d(5);
+    NotARep n;
+    d /= n;
+    assert(d.count() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_mod=duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_mod=duration.pass.cpp
new file mode 100644
index 0000000..499a06e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_mod=duration.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration& operator%=(const duration& rhs)
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::microseconds us1(11);
+    std::chrono::microseconds us2(3);
+    us1 %= us2;
+    return us1.count() == 2;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::microseconds us1(11);
+    std::chrono::microseconds us2(3);
+    us1 %= us2;
+    assert(us1.count() == 2);
+    us1 %= std::chrono::milliseconds(3);
+    assert(us1.count() == 2);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is PR#41130
+    std::chrono::nanoseconds d(5);
+    NotARep n;
+    d %= n;
+    assert(d.count() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_mod=rep.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_mod=rep.pass.cpp
new file mode 100644
index 0000000..f5ef512
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_mod=rep.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration& operator%=(const rep& rhs)
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+class NotARep {};
+
+typedef std::chrono::seconds Duration;
+Duration operator%=(Duration d, NotARep) { return d; }
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::seconds s(11);
+    s %= 3;
+    return s.count() == 2;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::microseconds us(11);
+    us %= 3;
+    assert(us.count() == 2);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is PR#41130
+    Duration d(5);
+    NotARep n;
+    d %= n;
+    assert(d.count() == 5);
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_times=.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_times=.pass.cpp
new file mode 100644
index 0000000..06c9855
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.arithmetic/op_times=.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration& operator*=(const rep& rhs);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+#if TEST_STD_VER > 14
+constexpr bool test_constexpr()
+{
+    std::chrono::seconds s(3);
+    s *= 5;
+    return s.count() == 15;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    std::chrono::nanoseconds ns(3);
+    ns *= 5;
+    assert(ns.count() == 15);
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(test_constexpr(), "");
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is PR#41130
+    std::chrono::nanoseconds d(5);
+    NotARep n;
+    d *= n;
+    assert(d.count() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/ceil.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/ceil.compile.fail.cpp
new file mode 100644
index 0000000..a9711f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/ceil.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// ceil
+
+// template <class ToDuration, class Rep, class Period>
+//   ToDuration
+//   ceil(const duration<Rep, Period>& d);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::ceil<int>(std::chrono::milliseconds(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/ceil.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/ceil.pass.cpp
new file mode 100644
index 0000000..2da112c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/ceil.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <chrono>
+
+// ceil
+
+// template <class ToDuration, class Rep, class Period>
+//   constexpr
+//   ToDuration
+//   ceil(const duration<Rep, Period>& d);
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class ToDuration, class FromDuration>
+void
+test(const FromDuration& f, const ToDuration& d)
+{
+    {
+    typedef decltype(std::chrono::ceil<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToDuration>::value), "");
+    assert(std::chrono::ceil<ToDuration>(f) == d);
+    }
+}
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 3));
+    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2));
+    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122));
+    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-121));
+
+    {
+//  9000000ms is 2 hours and 30 minutes
+    constexpr std::chrono::hours h1 = std::chrono::ceil<std::chrono::hours>(std::chrono::milliseconds(9000000));
+    static_assert(h1.count() == 3, "");
+    constexpr std::chrono::hours h2 = std::chrono::ceil<std::chrono::hours>(std::chrono::milliseconds(-9000000));
+    static_assert(h2.count() == -2, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/duration_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/duration_cast.pass.cpp
new file mode 100644
index 0000000..4fee946
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/duration_cast.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class ToDuration, class Rep, class Period>
+//   constexpr
+//   ToDuration
+//   duration_cast(const duration<Rep, Period>& d);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class ToDuration, class FromDuration>
+void
+test(const FromDuration& f, const ToDuration& d)
+{
+    {
+    typedef decltype(std::chrono::duration_cast<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToDuration>::value), "");
+    assert(std::chrono::duration_cast<ToDuration>(f) == d);
+    }
+}
+
+int main(int, char**)
+{
+    test(std::chrono::milliseconds(7265000), std::chrono::hours(2));
+    test(std::chrono::milliseconds(7265000), std::chrono::minutes(121));
+    test(std::chrono::milliseconds(7265000), std::chrono::seconds(7265));
+    test(std::chrono::milliseconds(7265000), std::chrono::milliseconds(7265000));
+    test(std::chrono::milliseconds(7265000), std::chrono::microseconds(7265000000LL));
+    test(std::chrono::milliseconds(7265000), std::chrono::nanoseconds(7265000000000LL));
+    test(std::chrono::milliseconds(7265000),
+         std::chrono::duration<double, std::ratio<3600> >(7265./3600));
+    test(std::chrono::duration<int, std::ratio<2, 3> >(9),
+         std::chrono::duration<int, std::ratio<3, 5> >(10));
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::hours h = std::chrono::duration_cast<std::chrono::hours>(std::chrono::milliseconds(7265000));
+    static_assert(h.count() == 2, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/floor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/floor.compile.fail.cpp
new file mode 100644
index 0000000..c119a80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/floor.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// floor
+
+// template <class ToDuration, class Rep, class Period>
+//   ToDuration
+//   floor(const duration<Rep, Period>& d);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::floor<int>(std::chrono::milliseconds(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/floor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/floor.pass.cpp
new file mode 100644
index 0000000..110d3aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/floor.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// floor
+
+// template <class ToDuration, class Rep, class Period>
+//   constexpr
+//   ToDuration
+//   floor(const duration<Rep, Period>& d);
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class ToDuration, class FromDuration>
+void
+test(const FromDuration& f, const ToDuration& d)
+{
+    {
+    typedef decltype(std::chrono::floor<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToDuration>::value), "");
+    assert(std::chrono::floor<ToDuration>(f) == d);
+    }
+}
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 2));
+    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-3));
+    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 121));
+    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-122));
+
+    {
+//  9000000ms is 2 hours and 30 minutes
+    constexpr std::chrono::hours h1 = std::chrono::floor<std::chrono::hours>(std::chrono::milliseconds(9000000));
+    static_assert(h1.count() == 2, "");
+    constexpr std::chrono::hours h2 = std::chrono::floor<std::chrono::hours>(std::chrono::milliseconds(-9000000));
+    static_assert(h2.count() == -3, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/round.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/round.compile.fail.cpp
new file mode 100644
index 0000000..93366b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/round.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// round
+
+// template <class ToDuration, class Rep, class Period>
+//   ToDuration
+//   round(const duration<Rep, Period>& d);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::round<int>(std::chrono::milliseconds(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/round.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/round.pass.cpp
new file mode 100644
index 0000000..8eb54a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/round.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// round
+
+// template <class ToDuration, class Rep, class Period>
+//   constexpr
+//   ToDuration
+//   ceil(const duration<Rep, Period>& d);
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class ToDuration, class FromDuration>
+void
+test(const FromDuration& f, const ToDuration& d)
+{
+    {
+    typedef decltype(std::chrono::round<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToDuration>::value), "");
+    assert(std::chrono::round<ToDuration>(f) == d);
+    }
+}
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 2));
+    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2));
+    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122));
+    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-122));
+
+    {
+//  9000000ms is 2 hours and 30 minutes
+    constexpr std::chrono::hours h1 = std::chrono::round<std::chrono::hours>(std::chrono::milliseconds(9000000));
+    static_assert(h1.count() == 2, "");
+    constexpr std::chrono::hours h2 = std::chrono::round<std::chrono::hours>(std::chrono::milliseconds(-9000000));
+    static_assert(h2.count() == -2, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/toduration.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/toduration.compile.fail.cpp
new file mode 100644
index 0000000..0f52c36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cast/toduration.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class ToDuration, class Rep, class Period>
+//   ToDuration
+//   duration_cast(const duration<Rep, Period>& d);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::duration_cast<int>(std::chrono::milliseconds(3));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.comparisons/op_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.comparisons/op_equal.pass.cpp
new file mode 100644
index 0000000..50cc3a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.comparisons/op_equal.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   bool
+//   operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   bool
+//   operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(3);
+    assert(s1 == s2);
+    assert(!(s1 != s2));
+    }
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(4);
+    assert(!(s1 == s2));
+    assert(s1 != s2);
+    }
+    {
+    std::chrono::milliseconds s1(3);
+    std::chrono::microseconds s2(3000);
+    assert(s1 == s2);
+    assert(!(s1 != s2));
+    }
+    {
+    std::chrono::milliseconds s1(3);
+    std::chrono::microseconds s2(4000);
+    assert(!(s1 == s2));
+    assert(s1 != s2);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(10);
+    assert(s1 == s2);
+    assert(!(s1 != s2));
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(10);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(9);
+    assert(!(s1 == s2));
+    assert(s1 != s2);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    std::chrono::duration<double, std::ratio<3, 5> > s2(10);
+    assert(s1 == s2);
+    assert(!(s1 != s2));
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(3);
+    static_assert(s1 == s2, "");
+    static_assert(!(s1 != s2), "");
+    }
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(4);
+    static_assert(!(s1 == s2), "");
+    static_assert(s1 != s2, "");
+    }
+    {
+    constexpr std::chrono::milliseconds s1(3);
+    constexpr std::chrono::microseconds s2(3000);
+    static_assert(s1 == s2, "");
+    static_assert(!(s1 != s2), "");
+    }
+    {
+    constexpr std::chrono::milliseconds s1(3);
+    constexpr std::chrono::microseconds s2(4000);
+    static_assert(!(s1 == s2), "");
+    static_assert(s1 != s2, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(10);
+    static_assert(s1 == s2, "");
+    static_assert(!(s1 != s2), "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(10);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(9);
+    static_assert(!(s1 == s2), "");
+    static_assert(s1 != s2, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(10);
+    static_assert(s1 == s2, "");
+    static_assert(!(s1 != s2), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.comparisons/op_less.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.comparisons/op_less.pass.cpp
new file mode 100644
index 0000000..9f05f28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.comparisons/op_less.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   bool
+//   operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   bool
+//   operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   bool
+//   operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   bool
+//   operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(3);
+    assert(!(s1 < s2));
+    assert(!(s1 > s2));
+    assert( (s1 <= s2));
+    assert( (s1 >= s2));
+    }
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(4);
+    assert( (s1 < s2));
+    assert(!(s1 > s2));
+    assert( (s1 <= s2));
+    assert(!(s1 >= s2));
+    }
+    {
+    std::chrono::milliseconds s1(3);
+    std::chrono::microseconds s2(3000);
+    assert(!(s1 < s2));
+    assert(!(s1 > s2));
+    assert( (s1 <= s2));
+    assert( (s1 >= s2));
+    }
+    {
+    std::chrono::milliseconds s1(3);
+    std::chrono::microseconds s2(4000);
+    assert( (s1 < s2));
+    assert(!(s1 > s2));
+    assert( (s1 <= s2));
+    assert(!(s1 >= s2));
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(10);
+    assert(!(s1 < s2));
+    assert(!(s1 > s2));
+    assert( (s1 <= s2));
+    assert( (s1 >= s2));
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(10);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(9);
+    assert(!(s1 < s2));
+    assert( (s1 > s2));
+    assert(!(s1 <= s2));
+    assert( (s1 >= s2));
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    std::chrono::duration<double, std::ratio<3, 5> > s2(10);
+    assert(!(s1 < s2));
+    assert(!(s1 > s2));
+    assert( (s1 <= s2));
+    assert( (s1 >= s2));
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(3);
+    static_assert(!(s1 < s2), "");
+    static_assert(!(s1 > s2), "");
+    static_assert( (s1 <= s2), "");
+    static_assert( (s1 >= s2), "");
+    }
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(4);
+    static_assert( (s1 < s2), "");
+    static_assert(!(s1 > s2), "");
+    static_assert( (s1 <= s2), "");
+    static_assert(!(s1 >= s2), "");
+    }
+    {
+    constexpr std::chrono::milliseconds s1(3);
+    constexpr std::chrono::microseconds s2(3000);
+    static_assert(!(s1 < s2), "");
+    static_assert(!(s1 > s2), "");
+    static_assert( (s1 <= s2), "");
+    static_assert( (s1 >= s2), "");
+    }
+    {
+    constexpr std::chrono::milliseconds s1(3);
+    constexpr std::chrono::microseconds s2(4000);
+    static_assert( (s1 < s2), "");
+    static_assert(!(s1 > s2), "");
+    static_assert( (s1 <= s2), "");
+    static_assert(!(s1 >= s2), "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(10);
+    static_assert(!(s1 < s2), "");
+    static_assert(!(s1 > s2), "");
+    static_assert( (s1 <= s2), "");
+    static_assert( (s1 >= s2), "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(10);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(9);
+    static_assert(!(s1 < s2), "");
+    static_assert( (s1 > s2), "");
+    static_assert(!(s1 <= s2), "");
+    static_assert( (s1 >= s2), "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(9);
+    constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(10);
+    static_assert(!(s1 < s2), "");
+    static_assert(!(s1 > s2), "");
+    static_assert( (s1 <= s2), "");
+    static_assert( (s1 >= s2), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_exact.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_exact.pass.cpp
new file mode 100644
index 0000000..4c0af92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_exact.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+// exact conversions allowed for integral reps
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::milliseconds ms(1);
+    std::chrono::microseconds us = ms;
+    assert(us.count() == 1000);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::milliseconds ms(1);
+    constexpr std::chrono::microseconds us = ms;
+    static_assert(us.count() == 1000, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_float_to_int.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_float_to_int.compile.fail.cpp
new file mode 100644
index 0000000..4311c1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_float_to_int.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+//  conversions from floating point to integral durations disallowed
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::duration<double> d;
+    std::chrono::duration<int> i = d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_inexact.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_inexact.compile.fail.cpp
new file mode 100644
index 0000000..fb0b488
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_inexact.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+// inexact conversions disallowed for integral reps
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::microseconds us(1);
+    std::chrono::milliseconds ms = us;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_inexact.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_inexact.pass.cpp
new file mode 100644
index 0000000..4a3a069
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_inexact.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+// inexact conversions allowed for floating point reps
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::duration<double, std::micro> us(1);
+    std::chrono::duration<double, std::milli> ms = us;
+    assert(ms.count() == 1./1000);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::duration<double, std::micro> us(1);
+    constexpr std::chrono::duration<double, std::milli> ms = us;
+    static_assert(ms.count() == 1./1000, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_int_to_float.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_int_to_float.pass.cpp
new file mode 100644
index 0000000..546c8dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_int_to_float.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+//  conversions from integral to floating point durations allowed
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::duration<int> i(3);
+    std::chrono::duration<double, std::milli> d = i;
+    assert(d.count() == 3000);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::duration<int> i(3);
+    constexpr std::chrono::duration<double, std::milli> d = i;
+    static_assert(d.count() == 3000, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_overflow.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_overflow.pass.cpp
new file mode 100644
index 0000000..e6a0df6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/convert_overflow.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+// overflow should SFINAE instead of error out, LWG 2094
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+bool called = false;
+
+void f(std::chrono::milliseconds);
+void f(std::chrono::seconds)
+{
+    called = true;
+}
+
+int main(int, char**)
+{
+    {
+    std::chrono::duration<int, std::exa> r(1);
+    f(r);
+    assert(called);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/default.pass.cpp
new file mode 100644
index 0000000..c598afa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// duration() = default;
+
+// Rep must be default initialized, not initialized with 0
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+template <class D>
+void
+test()
+{
+    D d;
+    assert(d.count() == typename D::rep());
+#if TEST_STD_VER >= 11
+    constexpr D d2 = D();
+    static_assert(d2.count() == typename D::rep(), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::chrono::duration<Rep> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep.pass.cpp
new file mode 100644
index 0000000..252f503
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2>
+//   explicit duration(const Rep2& r);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+#if TEST_STD_VER >= 11
+struct NotValueConvertible {
+    operator int() const&& = delete;
+    constexpr operator int() const& { return 1; }
+};
+#endif
+
+template <class D, class R>
+TEST_CONSTEXPR_CXX14 void check(R r) {
+    D d(r);
+    assert(d.count() == r);
+}
+
+TEST_CONSTEXPR_CXX14 bool test() {
+    check<std::chrono::duration<int> >(5);
+    check<std::chrono::duration<int, std::ratio<3, 2> > >(5);
+    check<std::chrono::duration<Rep, std::ratio<3, 2> > >(Rep(3));
+    check<std::chrono::duration<double, std::ratio<2, 3> > >(5.5);
+
+    // test for [time.duration.cons]/1
+#if TEST_STD_VER >= 11
+    check<std::chrono::duration<int> >(NotValueConvertible());
+#endif
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 11
+    static_assert(test(), "");
+#endif
+
+    // Basic test for constexpr-friendliness in C++11
+#if TEST_STD_VER >= 11
+    {
+        constexpr std::chrono::duration<int> d(5);
+        static_assert(d.count() == 5, "");
+    }
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep01.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep01.compile.fail.cpp
new file mode 100644
index 0000000..f1e60f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep01.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2>
+//   explicit duration(const Rep2& r);
+
+// test for explicit
+
+#include <chrono>
+
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<int> d = 1;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep02.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep02.compile.fail.cpp
new file mode 100644
index 0000000..4a09325
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep02.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2>
+//   explicit duration(const Rep2& r);
+
+// Rep2 shall be implicitly convertible to rep
+
+#include <chrono>
+
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<Rep> d(1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep02.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep02.pass.cpp
new file mode 100644
index 0000000..1719b13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep02.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2>
+//   explicit duration(const Rep2& r);
+
+// construct double with int
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<double> d(5);
+    assert(d.count() == 5);
+#if TEST_STD_VER >= 11
+    constexpr std::chrono::duration<double> d2(5);
+    static_assert(d2.count() == 5, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep03.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep03.compile.fail.cpp
new file mode 100644
index 0000000..6b4d002
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.cons/rep03.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep2>
+//   explicit duration(const Rep2& r);
+
+// treat_as_floating_point<Rep2>::value shall be false
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::duration<int> d(1.);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals.pass.cpp
new file mode 100644
index 0000000..52c4bca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <chrono>
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using namespace std::literals::chrono_literals;
+
+//    Make sure the types are right
+    static_assert ( std::is_same<decltype( 3h   ), std::chrono::hours>::value, "" );
+    static_assert ( std::is_same<decltype( 3min ), std::chrono::minutes>::value, "" );
+    static_assert ( std::is_same<decltype( 3s   ), std::chrono::seconds>::value, "" );
+    static_assert ( std::is_same<decltype( 3ms  ), std::chrono::milliseconds>::value, "" );
+    static_assert ( std::is_same<decltype( 3us  ), std::chrono::microseconds>::value, "" );
+    static_assert ( std::is_same<decltype( 3ns  ), std::chrono::nanoseconds>::value, "" );
+
+    std::chrono::hours h = 4h;
+    assert ( h == std::chrono::hours(4));
+    auto h2 = 4.0h;
+    assert ( h == h2 );
+
+    std::chrono::minutes min = 36min;
+    assert ( min == std::chrono::minutes(36));
+    auto min2 = 36.0min;
+    assert ( min == min2 );
+
+    std::chrono::seconds s = 24s;
+    assert ( s == std::chrono::seconds(24));
+    auto s2 = 24.0s;
+    assert ( s == s2 );
+
+    std::chrono::milliseconds ms = 247ms;
+    assert ( ms == std::chrono::milliseconds(247));
+    auto ms2 = 247.0ms;
+    assert ( ms == ms2 );
+
+    std::chrono::microseconds us = 867us;
+    assert ( us == std::chrono::microseconds(867));
+    auto us2 = 867.0us;
+    assert ( us == us2 );
+
+    std::chrono::nanoseconds ns = 645ns;
+    assert ( ns == std::chrono::nanoseconds(645));
+    auto ns2 = 645.ns;
+    assert ( ns == ns2 );
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals1.compile.fail.cpp
new file mode 100644
index 0000000..c782a99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals1.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <chrono>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::chrono::hours h  = 4h;  // should fail w/conversion operator not found
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals1.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals1.pass.cpp
new file mode 100644
index 0000000..8ba8c48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals1.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using namespace std::chrono;
+
+    hours h = 4h;
+    assert ( h == hours(4));
+    auto h2 = 4.0h;
+    assert ( h == h2 );
+
+    minutes min = 36min;
+    assert ( min == minutes(36));
+    auto min2 = 36.0min;
+    assert ( min == min2 );
+
+    seconds s = 24s;
+    assert ( s == seconds(24));
+    auto s2 = 24.0s;
+    assert ( s == s2 );
+
+    milliseconds ms = 247ms;
+    assert ( ms == milliseconds(247));
+    auto ms2 = 247.0ms;
+    assert ( ms == ms2 );
+
+    microseconds us = 867us;
+    assert ( us == microseconds(867));
+    auto us2 = 867.0us;
+    assert ( us == us2 );
+
+    nanoseconds ns = 645ns;
+    assert ( ns == nanoseconds(645));
+    auto ns2 = 645.ns;
+    assert ( ns == ns2 );
+
+#if TEST_STD_VER > 17
+    assert(Sunday    == weekday(0));
+    assert(Monday    == weekday(1));
+    assert(Tuesday   == weekday(2));
+    assert(Wednesday == weekday(3));
+    assert(Thursday  == weekday(4));
+    assert(Friday    == weekday(5));
+    assert(Saturday  == weekday(6));
+
+    assert(January   == month(1));
+    assert(February  == month(2));
+    assert(March     == month(3));
+    assert(April     == month(4));
+    assert(May       == month(5));
+    assert(June      == month(6));
+    assert(July      == month(7));
+    assert(August    == month(8));
+    assert(September == month(9));
+    assert(October   == month(10));
+    assert(November  == month(11));
+    assert(December  == month(12));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals2.compile.fail.cpp
new file mode 100644
index 0000000..8c2bada
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals2.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <chrono>
+#include <cassert>
+
+int main(int, char**)
+{
+    using std::chrono::hours;
+
+    hours foo  =  4h;  // should fail w/conversion operator not found
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals2.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals2.pass.cpp
new file mode 100644
index 0000000..8244f66
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.literals/literals2.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <chrono>
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using namespace std::literals;
+
+    std::chrono::hours h = 4h;
+    assert ( h == std::chrono::hours(4));
+    auto h2 = 4.0h;
+    assert ( h == h2 );
+
+    std::chrono::minutes min = 36min;
+    assert ( min == std::chrono::minutes(36));
+    auto min2 = 36.0min;
+    assert ( min == min2 );
+
+    std::chrono::seconds s = 24s;
+    assert ( s == std::chrono::seconds(24));
+    auto s2 = 24.0s;
+    assert ( s == s2 );
+
+    std::chrono::milliseconds ms = 247ms;
+    assert ( ms == std::chrono::milliseconds(247));
+    auto ms2 = 247.0ms;
+    assert ( ms == ms2 );
+
+    std::chrono::microseconds us = 867us;
+    assert ( us == std::chrono::microseconds(867));
+    auto us2 = 867.0us;
+    assert ( us == us2 );
+
+    std::chrono::nanoseconds ns = 645ns;
+    assert ( ns == std::chrono::nanoseconds(645));
+    auto ns2 = 645.ns;
+    assert ( ns == ns2 );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_+.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_+.pass.cpp
new file mode 100644
index 0000000..269737f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_+.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
+//   operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(5);
+    std::chrono::seconds r = s1 + s2;
+    assert(r.count() == 8);
+    }
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::microseconds s2(5);
+    std::chrono::microseconds r = s1 + s2;
+    assert(r.count() == 3000005);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    std::chrono::duration<int, std::ratio<1, 15> > r = s1 + s2;
+    assert(r.count() == 75);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    std::chrono::duration<double, std::ratio<1, 15> > r = s1 + s2;
+    assert(r.count() == 75);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(5);
+    constexpr std::chrono::seconds r = s1 + s2;
+    static_assert(r.count() == 8, "");
+    }
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::microseconds s2(5);
+    constexpr std::chrono::microseconds r = s1 + s2;
+    static_assert(r.count() == 3000005, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 + s2;
+    static_assert(r.count() == 75, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    constexpr std::chrono::duration<double, std::ratio<1, 15> > r = s1 + s2;
+    static_assert(r.count() == 75, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_-.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_-.pass.cpp
new file mode 100644
index 0000000..e4e5af0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_-.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
+//   operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(5);
+    std::chrono::seconds r = s1 - s2;
+    assert(r.count() == -2);
+    }
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::microseconds s2(5);
+    std::chrono::microseconds r = s1 - s2;
+    assert(r.count() == 2999995);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2;
+    assert(r.count() == -15);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2;
+    assert(r.count() == -15);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(5);
+    constexpr std::chrono::seconds r = s1 - s2;
+    static_assert(r.count() == -2, "");
+    }
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::microseconds s2(5);
+    constexpr std::chrono::microseconds r = s1 - s2;
+    static_assert(r.count() == 2999995, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2;
+    static_assert(r.count() == -15, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    constexpr std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2;
+    static_assert(r.count() == -15, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_duration.pass.cpp
new file mode 100644
index 0000000..d580f4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_duration.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   typename common_type<Rep1, Rep2>::type
+//   operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+#include "truncate_fp.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::nanoseconds ns1(15);
+    std::chrono::nanoseconds ns2(5);
+    assert(ns1 / ns2 == 3);
+    }
+    {
+    std::chrono::microseconds us1(15);
+    std::chrono::nanoseconds ns2(5);
+    assert(us1 / ns2 == 3000);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(30);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    assert(s1 / s2 == 6);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(30);
+    std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    assert(s1 / s2 == truncate_fp(20./3));
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::nanoseconds ns1(15);
+    constexpr std::chrono::nanoseconds ns2(5);
+    static_assert(ns1 / ns2 == 3, "");
+    }
+    {
+    constexpr std::chrono::microseconds us1(15);
+    constexpr std::chrono::nanoseconds ns2(5);
+    static_assert(us1 / ns2 == 3000, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(30);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    static_assert(s1 / s2 == 6, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(30);
+    constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    static_assert(s1 / s2 == 20./3, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_rep.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_rep.compile.fail.cpp
new file mode 100644
index 0000000..327ff56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_rep.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator/(const duration<Rep1, Period>& d, const Rep2& s);
+
+#include <chrono>
+
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<Rep> d(Rep(15));
+    d = d / 5;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_rep.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_rep.pass.cpp
new file mode 100644
index 0000000..8b623aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_divide_rep.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   constexpr
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator/(const duration<Rep1, Period>& d, const Rep2& s);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::chrono::nanoseconds Dur;
+    Dur ns(15);
+    ASSERT_SAME_TYPE(Dur, decltype(ns / 5));
+    ns = ns / 5;
+    assert(ns.count() == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::nanoseconds ns(15);
+    constexpr std::chrono::nanoseconds ns2 = ns / 5;
+    static_assert(ns2.count() == 3, "");
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is PR#41130
+    typedef std::chrono::nanoseconds Duration;
+    Duration d(5);
+    NotARep n;
+    ASSERT_SAME_TYPE(Duration, decltype(d / n));
+    d = d / n;
+    assert(d.count() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_duration.pass.cpp
new file mode 100644
index 0000000..8b8b50d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_duration.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
+//   operator%(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::nanoseconds ns1(15);
+    std::chrono::nanoseconds ns2(6);
+    std::chrono::nanoseconds r = ns1 % ns2;
+    assert(r.count() == 3);
+    }
+    {
+    std::chrono::microseconds us1(15);
+    std::chrono::nanoseconds ns2(28);
+    std::chrono::nanoseconds r = us1 % ns2;
+    assert(r.count() == 20);
+    }
+    {
+    std::chrono::duration<int, std::ratio<3, 5> > s1(6);
+    std::chrono::duration<int, std::ratio<2, 3> > s2(3);
+    std::chrono::duration<int, std::ratio<1, 15> > r = s1 % s2;
+    assert(r.count() == 24);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::nanoseconds ns1(15);
+    constexpr std::chrono::nanoseconds ns2(6);
+    constexpr std::chrono::nanoseconds r = ns1 % ns2;
+    static_assert(r.count() == 3, "");
+    }
+    {
+    constexpr std::chrono::microseconds us1(15);
+    constexpr std::chrono::nanoseconds ns2(28);
+    constexpr std::chrono::nanoseconds r = us1 % ns2;
+    static_assert(r.count() == 20, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s1(6);
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s2(3);
+    constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 % s2;
+    static_assert(r.count() == 24, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_rep.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_rep.compile.fail.cpp
new file mode 100644
index 0000000..f2a5885
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_rep.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator%(const duration<Rep1, Period>& d, const Rep2& s)
+
+#include <chrono>
+
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<Rep> d(Rep(15));
+    d = d % 5;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_rep.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_rep.pass.cpp
new file mode 100644
index 0000000..0878aff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_mod_rep.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   constexpr
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator%(const duration<Rep1, Period>& d, const Rep2& s)
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::chrono::nanoseconds Dur;
+    Dur ns(15);
+    ASSERT_SAME_TYPE(Dur, decltype(ns % 6));
+    ns = ns % 6;
+    assert(ns.count() == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::nanoseconds ns(15);
+    constexpr std::chrono::nanoseconds ns2 = ns % 6;
+    static_assert(ns2.count() == 3, "");
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is PR#41130
+    typedef std::chrono::seconds Duration;
+    Duration d(5);
+    NotARep n;
+    ASSERT_SAME_TYPE(Duration, decltype(d % n));
+    d = d % n;
+    assert(d.count() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep.pass.cpp
new file mode 100644
index 0000000..c331032
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   constexpr
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator*(const duration<Rep1, Period>& d, const Rep2& s);
+
+// template <class Rep1, class Period, class Rep2>
+//   constexpr
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator*(const Rep1& s, const duration<Rep2, Period>& d);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    {
+    std::chrono::nanoseconds ns(3);
+    ns = ns * 5;
+    assert(ns.count() == 15);
+    ns = 6 * ns;
+    assert(ns.count() == 90);
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    constexpr std::chrono::nanoseconds ns(3);
+    constexpr std::chrono::nanoseconds ns2 = ns * 5;
+    static_assert(ns2.count() == 15, "");
+    constexpr std::chrono::nanoseconds ns3 = 6 * ns;
+    static_assert(ns3.count() == 18, "");
+    }
+#endif
+
+#if TEST_STD_VER >= 11
+    { // This is related to PR#41130
+    typedef std::chrono::nanoseconds Duration;
+    Duration d(5);
+    NotARep n;
+    ASSERT_SAME_TYPE(Duration, decltype(d * n));
+    ASSERT_SAME_TYPE(Duration, decltype(n * d));
+    d = d * n;
+    assert(d.count() == 5);
+    d = n * d;
+    assert(d.count() == 5);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep1.compile.fail.cpp
new file mode 100644
index 0000000..44a77ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep1.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator*(const duration<Rep1, Period>& d, const Rep2& s);
+
+// template <class Rep1, class Period, class Rep2>
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator*(const Rep1& s, const duration<Rep2, Period>& d);
+
+#include <chrono>
+
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<Rep> d;
+    d = d * 5;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep2.compile.fail.cpp
new file mode 100644
index 0000000..9ce8258
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/op_times_rep2.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// template <class Rep1, class Period, class Rep2>
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator*(const duration<Rep1, Period>& d, const Rep2& s);
+
+// template <class Rep1, class Period, class Rep2>
+//   duration<typename common_type<Rep1, Rep2>::type, Period>
+//   operator*(const Rep1& s, const duration<Rep2, Period>& d);
+
+#include <chrono>
+
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    std::chrono::duration<Rep> d;
+    d = 5 * d;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/ostream.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/ostream.pass.cpp
new file mode 100644
index 0000000..0c2f685
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.nonmember/ostream.pass.cpp
@@ -0,0 +1,234 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class Rep, class Period = ratio<1>> class duration;
+
+// template<class charT, class traits, class Rep, class Period>
+//   basic_ostream<charT, traits>&
+//     operator<<(basic_ostream<charT, traits>& os,
+//                const duration<Rep, Period>& d);
+
+#include <chrono>
+
+#include <cassert>
+#include <concepts>
+#include <sstream>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT, class Rep, class Period>
+static std::basic_string<CharT> stream_c_locale(std::chrono::duration<Rep, Period> duration) {
+  std::basic_stringstream<CharT> sstr;
+  sstr.precision(4);
+  sstr << std::fixed << duration;
+  return sstr.str();
+}
+
+template <class CharT, class Rep, class Period>
+static std::basic_string<CharT> stream_fr_FR_locale(std::chrono::duration<Rep, Period> duration) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_fr_FR_UTF_8);
+  sstr.imbue(locale);
+  sstr.precision(4);
+  sstr << std::fixed << duration;
+  return sstr.str();
+}
+
+template <class CharT, class Rep, class Period>
+static std::basic_string<CharT> stream_ja_JP_locale(std::chrono::duration<Rep, Period> duration) {
+  std::basic_stringstream<CharT> sstr;
+  const std::locale locale(LOCALE_ja_JP_UTF_8);
+  sstr.imbue(locale);
+  sstr.precision(4);
+  sstr << std::fixed << duration;
+  return sstr.str();
+}
+
+template <class CharT>
+static void test_values() {
+  using namespace std::literals::chrono_literals;
+
+  assert(stream_c_locale<CharT>(-1'000'000s) == SV("-1000000s"));
+  assert(stream_c_locale<CharT>(1'000'000s) == SV("1000000s"));
+  assert(stream_c_locale<CharT>(-1'000.123456s) == SV("-1000.1235s"));
+  assert(stream_c_locale<CharT>(1'000.123456s) == SV("1000.1235s"));
+
+  if constexpr (std::same_as<CharT, char>) {
+#if defined(__APPLE__)
+    assert(stream_fr_FR_locale<CharT>(-1'000'000s) == SV("-1000000s"));
+    assert(stream_fr_FR_locale<CharT>(1'000'000s) == SV("1000000s"));
+    assert(stream_fr_FR_locale<CharT>(-1'000.123456s) == SV("-1000,1235s"));
+    assert(stream_fr_FR_locale<CharT>(1'000.123456s) == SV("1000,1235s"));
+#else
+    assert(stream_fr_FR_locale<CharT>(-1'000'000s) == SV("-1 000 000s"));
+    assert(stream_fr_FR_locale<CharT>(1'000'000s) == SV("1 000 000s"));
+    assert(stream_fr_FR_locale<CharT>(-1'000.123456s) == SV("-1 000,1235s"));
+    assert(stream_fr_FR_locale<CharT>(1'000.123456s) == SV("1 000,1235s"));
+#endif
+  } else {
+#ifdef _WIN32
+    assert(stream_fr_FR_locale<CharT>(-1'000'000s) == SV("-1\u00A0000\u00A0000s"));
+    assert(stream_fr_FR_locale<CharT>(1'000'000s) == SV("1\u00A0000\u00A0000s"));
+    assert(stream_fr_FR_locale<CharT>(-1'000.123456s) == SV("-1\u00A0000,1235s"));
+    assert(stream_fr_FR_locale<CharT>(1'000.123456s) == SV("1\u00A0000,1235s"));
+#elif defined(__APPLE__)
+    assert(stream_fr_FR_locale<CharT>(-1'000'000s) == SV("-1000000s"));
+    assert(stream_fr_FR_locale<CharT>(1'000'000s) == SV("1000000s"));
+    assert(stream_fr_FR_locale<CharT>(-1'000.123456s) == SV("-1000,1235s"));
+    assert(stream_fr_FR_locale<CharT>(1'000.123456s) == SV("1000,1235s"));
+#else
+    assert(stream_fr_FR_locale<CharT>(-1'000'000s) == SV("-1\u202f000\u202f000s"));
+    assert(stream_fr_FR_locale<CharT>(1'000'000s) == SV("1\u202f000\u202f000s"));
+    assert(stream_fr_FR_locale<CharT>(-1'000.123456s) == SV("-1\u202f000,1235s"));
+    assert(stream_fr_FR_locale<CharT>(1'000.123456s) == SV("1\u202f000,1235s"));
+#endif
+  }
+
+  assert(stream_ja_JP_locale<CharT>(-1'000'000s) == SV("-1,000,000s"));
+  assert(stream_ja_JP_locale<CharT>(1'000'000s) == SV("1,000,000s"));
+  assert(stream_ja_JP_locale<CharT>(-1'000.123456s) == SV("-1,000.1235s"));
+  assert(stream_ja_JP_locale<CharT>(1'000.123456s) == SV("1,000.1235s"));
+}
+
+template <class CharT>
+static void test_units() {
+  using namespace std::literals::chrono_literals;
+
+  // C locale
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::atto>(0)) == SV("0as"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::femto>(0)) == SV("0fs"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::pico>(0)) == SV("0ps"));
+  assert(stream_c_locale<CharT>(0ns) == SV("0ns"));
+#ifndef TEST_HAS_NO_UNICODE
+  assert(stream_c_locale<CharT>(0us) == SV("0\u00b5s"));
+#else
+  assert(stream_c_locale<CharT>(0us) == SV("0us"));
+#endif
+  assert(stream_c_locale<CharT>(0ms) == SV("0ms"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::centi>(0)) == SV("0cs"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::deci>(0)) == SV("0ds"));
+
+  assert(stream_c_locale<CharT>(0s) == SV("0s"));
+
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::deca>(0)) == SV("0das"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::hecto>(0)) == SV("0hs"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::kilo>(0)) == SV("0ks"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::mega>(0)) == SV("0Ms"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::giga>(0)) == SV("0Gs"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::tera>(0)) == SV("0Ts"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::peta>(0)) == SV("0Ps"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::exa>(0)) == SV("0Es"));
+
+  assert(stream_c_locale<CharT>(0min) == SV("0min"));
+  assert(stream_c_locale<CharT>(0h) == SV("0h"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::ratio<86400>>(0)) == SV("0d"));
+
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::ratio<42>>(0)) == SV("0[42]s"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::ratio<33, 3>>(0)) == SV("0[11]s"));
+  assert(stream_c_locale<CharT>(std::chrono::duration<int, std::ratio<11, 9>>(0)) == SV("0[11/9]s"));
+
+  // fr_FR locale
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::atto>(0)) == SV("0as"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::femto>(0)) == SV("0fs"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::pico>(0)) == SV("0ps"));
+  assert(stream_fr_FR_locale<CharT>(0ns) == SV("0ns"));
+#ifndef TEST_HAS_NO_UNICODE
+  assert(stream_fr_FR_locale<CharT>(0us) == SV("0\u00b5s"));
+#else
+  assert(stream_fr_FR_locale<CharT>(0us) == SV("0us"));
+#endif
+  assert(stream_fr_FR_locale<CharT>(0ms) == SV("0ms"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::centi>(0)) == SV("0cs"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::deci>(0)) == SV("0ds"));
+
+  assert(stream_fr_FR_locale<CharT>(0s) == SV("0s"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::deca>(0)) == SV("0das"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::hecto>(0)) == SV("0hs"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::kilo>(0)) == SV("0ks"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::mega>(0)) == SV("0Ms"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::giga>(0)) == SV("0Gs"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::tera>(0)) == SV("0Ts"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::peta>(0)) == SV("0Ps"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::exa>(0)) == SV("0Es"));
+
+  assert(stream_fr_FR_locale<CharT>(0min) == SV("0min"));
+  assert(stream_fr_FR_locale<CharT>(0h) == SV("0h"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::ratio<86400>>(0)) == SV("0d"));
+
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::ratio<42>>(0)) == SV("0[42]s"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::ratio<33, 3>>(0)) == SV("0[11]s"));
+  assert(stream_fr_FR_locale<CharT>(std::chrono::duration<int, std::ratio<11, 9>>(0)) == SV("0[11/9]s"));
+
+  // ja_JP locale
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::atto>(0)) == SV("0as"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::femto>(0)) == SV("0fs"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::pico>(0)) == SV("0ps"));
+  assert(stream_ja_JP_locale<CharT>(0ns) == SV("0ns"));
+#ifndef TEST_HAS_NO_UNICODE
+  assert(stream_ja_JP_locale<CharT>(0us) == SV("0\u00b5s"));
+#else
+  assert(stream_ja_JP_locale<CharT>(0us) == SV("0us"));
+#endif
+  assert(stream_ja_JP_locale<CharT>(0ms) == SV("0ms"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::centi>(0)) == SV("0cs"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::deci>(0)) == SV("0ds"));
+
+  assert(stream_ja_JP_locale<CharT>(0s) == SV("0s"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::deca>(0)) == SV("0das"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::hecto>(0)) == SV("0hs"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::kilo>(0)) == SV("0ks"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::mega>(0)) == SV("0Ms"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::giga>(0)) == SV("0Gs"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::tera>(0)) == SV("0Ts"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::peta>(0)) == SV("0Ps"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::exa>(0)) == SV("0Es"));
+
+  assert(stream_ja_JP_locale<CharT>(0min) == SV("0min"));
+  assert(stream_ja_JP_locale<CharT>(0h) == SV("0h"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::ratio<86400>>(0)) == SV("0d"));
+
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::ratio<42>>(0)) == SV("0[42]s"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::ratio<33, 3>>(0)) == SV("0[11]s"));
+  assert(stream_ja_JP_locale<CharT>(std::chrono::duration<int, std::ratio<11, 9>>(0)) == SV("0[11/9]s"));
+}
+
+template <class CharT>
+static void test() {
+  test_values<CharT>();
+  test_units<CharT>();
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.observer/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.observer/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.observer/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/max.pass.cpp
new file mode 100644
index 0000000..dadd47b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/max.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// static constexpr duration max(); // noexcept after C++17
+
+#include <chrono>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+template <class D>
+void test()
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<typename D::rep>::max());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(       std::chrono::duration_values<typename D::rep>::max());
+#endif
+    {
+    typedef typename D::rep DRep;
+    DRep max_rep = std::chrono::duration_values<DRep>::max();
+    assert(D::max().count() == max_rep);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef typename D::rep DRep;
+    constexpr DRep max_rep = std::chrono::duration_values<DRep>::max();
+    static_assert(D::max().count() == max_rep, "");
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::chrono::duration<int> >();
+    test<std::chrono::duration<Rep> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/min.pass.cpp
new file mode 100644
index 0000000..1f4660a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/min.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// static constexpr duration min(); // noexcept after C++17
+
+#include <chrono>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+template <class D>
+void test()
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<typename D::rep>::min());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(       std::chrono::duration_values<typename D::rep>::min());
+#endif
+    {
+    typedef typename D::rep DRep;
+    DRep min_rep = std::chrono::duration_values<DRep>::min();
+    assert(D::min().count() == min_rep);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef typename D::rep DRep;
+    constexpr DRep min_rep = std::chrono::duration_values<DRep>::min();
+    static_assert(D::min().count() == min_rep, "");
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::chrono::duration<int> >();
+    test<std::chrono::duration<Rep> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/zero.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/zero.pass.cpp
new file mode 100644
index 0000000..a3f5350
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/time.duration.special/zero.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// static constexpr duration zero(); // noexcept after C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+template <class D>
+void test()
+{
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<typename D::rep>::zero());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(       std::chrono::duration_values<typename D::rep>::zero());
+#endif
+    {
+    typedef typename D::rep DRep;
+    DRep zero_rep = std::chrono::duration_values<DRep>::zero();
+    assert(D::zero().count() == zero_rep);
+    }
+#if TEST_STD_VER >= 11
+    {
+    typedef typename D::rep DRep;
+    constexpr DRep zero_rep = std::chrono::duration_values<DRep>::zero();
+    static_assert(D::zero().count() == zero_rep, "");
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::chrono::duration<int> >();
+    test<std::chrono::duration<Rep> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.duration/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.duration/types.pass.cpp
new file mode 100644
index 0000000..0d5ba0c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.duration/types.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration
+
+// Test nested types
+
+// typedef Rep rep;
+// typedef Period period;
+
+#include <chrono>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::duration<long, std::ratio<3, 2> > D;
+    static_assert((std::is_same<D::rep, long>::value), "");
+    static_assert((std::is_same<D::period, std::ratio<3, 2> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/hhmmss.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/hhmmss.fail.cpp
new file mode 100644
index 0000000..d900aba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/hhmmss.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// template <class Duration> class hh_mm_ss;
+//   If Duration is not an instance of duration, the program is ill-formed.
+
+#include <chrono>
+#include <string>
+#include <cassert>
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    std::chrono::hh_mm_ss<void> h0;        // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}template parameter of hh_mm_ss must be a std::chrono::duration}}
+    std::chrono::hh_mm_ss<int> h1;         // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}template parameter of hh_mm_ss must be a std::chrono::duration}}
+    std::chrono::hh_mm_ss<std::string> h2; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}template parameter of hh_mm_ss must be a std::chrono::duration}}
+    std::chrono::hh_mm_ss<A> h3;           // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}template parameter of hh_mm_ss must be a std::chrono::duration}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/is_am.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/is_am.pass.cpp
new file mode 100644
index 0000000..a2af7d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/is_am.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// constexpr bool is_am(const hours& h) noexcept;
+//   Returns: 0h <= h && h <= 11h.
+
+#include <chrono>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using hours = std::chrono::hours;
+    ASSERT_SAME_TYPE(bool, decltype(std::chrono::is_am(std::declval<hours>())));
+    ASSERT_NOEXCEPT(                std::chrono::is_am(std::declval<hours>()));
+
+    static_assert( std::chrono::is_am(hours( 0)), "");
+    static_assert( std::chrono::is_am(hours(11)), "");
+    static_assert(!std::chrono::is_am(hours(12)), "");
+    static_assert(!std::chrono::is_am(hours(23)), "");
+
+    for (int i = 0; i < 12; ++i)
+        assert( std::chrono::is_am(hours(i)));
+    for (int i = 12; i < 24; ++i)
+        assert(!std::chrono::is_am(hours(i)));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/is_pm.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/is_pm.pass.cpp
new file mode 100644
index 0000000..7ce59dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/is_pm.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// constexpr bool is_pm(const hours& h) noexcept;
+//   Returns: 12h <= h && h <= 23
+
+#include <chrono>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using hours = std::chrono::hours;
+    ASSERT_SAME_TYPE(bool, decltype(std::chrono::is_pm(std::declval<hours>())));
+    ASSERT_NOEXCEPT(                std::chrono::is_pm(std::declval<hours>()));
+
+    static_assert(!std::chrono::is_pm(hours( 0)), "");
+    static_assert(!std::chrono::is_pm(hours(11)), "");
+    static_assert( std::chrono::is_pm(hours(12)), "");
+    static_assert( std::chrono::is_pm(hours(23)), "");
+
+    for (int i = 0; i < 12; ++i)
+        assert(!std::chrono::is_pm(hours(i)));
+    for (int i = 12; i < 24; ++i)
+        assert( std::chrono::is_pm(hours(i)));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/make12.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/make12.pass.cpp
new file mode 100644
index 0000000..e000096
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/make12.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// constexpr hours make12(const hours& h) noexcept;
+//   Returns: The 12-hour equivalent of h in the range [1h, 12h].
+//     If h is not in the range [0h, 23h], the value returned is unspecified.
+
+#include <chrono>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using hours = std::chrono::hours;
+    ASSERT_SAME_TYPE(hours, decltype(std::chrono::make12(std::declval<hours>())));
+    ASSERT_NOEXCEPT(                 std::chrono::make12(std::declval<hours>()));
+
+    static_assert( std::chrono::make12(hours( 0)) == hours(12), "");
+    static_assert( std::chrono::make12(hours(11)) == hours(11), "");
+    static_assert( std::chrono::make12(hours(12)) == hours(12), "");
+    static_assert( std::chrono::make12(hours(23)) == hours(11), "");
+
+    assert( std::chrono::make12(hours(0)) == hours(12));
+    for (int i = 1; i < 13; ++i)
+        assert( std::chrono::make12(hours(i)) == hours(i));
+    for (int i = 13; i < 24; ++i)
+        assert( std::chrono::make12(hours(i)) == hours(i-12));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/make24.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/make24.pass.cpp
new file mode 100644
index 0000000..2509d1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.12/make24.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// constexpr hours make24(const hours& h, bool is_pm) noexcept;
+//   Returns: If is_pm is false, returns the 24-hour equivalent of h in the range [0h, 11h],
+//       assuming h represents an ante meridiem hour.
+//     Else returns the 24-hour equivalent of h in the range [12h, 23h],
+//       assuming h represents a post meridiem hour.
+//     If h is not in the range [1h, 12h], the value returned is unspecified.
+
+#include <chrono>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using hours = std::chrono::hours;
+    ASSERT_SAME_TYPE(hours, decltype(std::chrono::make24(std::declval<hours>(), false)));
+    ASSERT_NOEXCEPT(                 std::chrono::make24(std::declval<hours>(), false));
+
+    static_assert( std::chrono::make24(hours( 1), false) == hours( 1), "");
+    static_assert( std::chrono::make24(hours(11), false) == hours(11), "");
+    static_assert( std::chrono::make24(hours(12), false) == hours( 0), "");
+    static_assert( std::chrono::make24(hours( 1), true)  == hours(13), "");
+    static_assert( std::chrono::make24(hours(11), true)  == hours(23), "");
+    static_assert( std::chrono::make24(hours(12), true)  == hours(12), "");
+
+    for (int i = 1; i < 11; ++i)
+    {
+        assert((std::chrono::make24(hours(i), false)) == hours(i));
+        assert((std::chrono::make24(hours(i), true))  == hours(12+i));
+    }
+    assert((std::chrono::make24(hours(12), false)) == hours( 0));
+    assert((std::chrono::make24(hours(12), true))  == hours(12));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/hours.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/hours.pass.cpp
new file mode 100644
index 0000000..ce7591c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/hours.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+//
+// constexpr chrono::hours hours() const noexcept;
+
+// Test values
+// duration     hours   minutes seconds fractional
+// 5000s            1       23      20      0
+// 5000 minutes     83      20      0       0
+// 123456789ms      34      17      36      789ms
+// 123456789us      0       2       3       456789us
+// 123456789ns      0       0       0       123456789ns
+// 1000mfn          0       20      9       0.6 (6000/10000)
+// 10000mfn         3       21      36      0
+
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename Duration>
+constexpr long check_hours(Duration d)
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    ASSERT_SAME_TYPE(std::chrono::hours, decltype(std::declval<HMS>().hours()));
+    ASSERT_NOEXCEPT(                              std::declval<HMS>().hours());
+    return HMS(d).hours().count();
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_hours(std::chrono::minutes( 1)) == 0, "");
+    static_assert( check_hours(std::chrono::minutes(-1)) == 0, "");
+
+    assert( check_hours(std::chrono::seconds( 5000)) == 1);
+    assert( check_hours(std::chrono::seconds(-5000)) == 1);
+    assert( check_hours(std::chrono::minutes( 5000)) == 83);
+    assert( check_hours(std::chrono::minutes(-5000)) == 83);
+    assert( check_hours(std::chrono::hours( 11))     == 11);
+    assert( check_hours(std::chrono::hours(-11))     == 11);
+
+    assert( check_hours(std::chrono::milliseconds( 123456789LL)) == 34);
+    assert( check_hours(std::chrono::milliseconds(-123456789LL)) == 34);
+    assert( check_hours(std::chrono::microseconds( 123456789LL)) ==  0);
+    assert( check_hours(std::chrono::microseconds(-123456789LL)) ==  0);
+    assert( check_hours(std::chrono::nanoseconds( 123456789LL))  ==  0);
+    assert( check_hours(std::chrono::nanoseconds(-123456789LL))  ==  0);
+
+    assert( check_hours(microfortnights(  1000)) == 0);
+    assert( check_hours(microfortnights( -1000)) == 0);
+    assert( check_hours(microfortnights( 10000)) == 3);
+    assert( check_hours(microfortnights(-10000)) == 3);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/is_negative.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/is_negative.pass.cpp
new file mode 100644
index 0000000..51fa2d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/is_negative.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+//
+// constexpr bool is_negative() const noexcept;
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename Duration>
+constexpr bool check_neg(Duration d)
+{
+    ASSERT_SAME_TYPE(bool, decltype(std::declval<std::chrono::hh_mm_ss<Duration>>().is_negative()));
+    ASSERT_NOEXCEPT(                std::declval<std::chrono::hh_mm_ss<Duration>>().is_negative());
+    return std::chrono::hh_mm_ss<Duration>(d).is_negative();
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert(!check_neg(std::chrono::minutes( 1)), "");
+    static_assert( check_neg(std::chrono::minutes(-1)), "");
+
+    assert(!check_neg(std::chrono::seconds( 5000)));
+    assert( check_neg(std::chrono::seconds(-5000)));
+    assert(!check_neg(std::chrono::minutes( 5000)));
+    assert( check_neg(std::chrono::minutes(-5000)));
+    assert(!check_neg(std::chrono::hours( 11)));
+    assert( check_neg(std::chrono::hours(-11)));
+
+    assert(!check_neg(std::chrono::milliseconds( 123456789LL)));
+    assert( check_neg(std::chrono::milliseconds(-123456789LL)));
+    assert(!check_neg(std::chrono::microseconds( 123456789LL)));
+    assert( check_neg(std::chrono::microseconds(-123456789LL)));
+    assert(!check_neg(std::chrono::nanoseconds( 123456789LL)));
+    assert( check_neg(std::chrono::nanoseconds(-123456789LL)));
+
+    assert(!check_neg(microfortnights( 10000)));
+    assert( check_neg(microfortnights(-10000)));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/minutes.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/minutes.pass.cpp
new file mode 100644
index 0000000..570b272
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/minutes.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+//
+// constexpr chrono::minutes minutes() const noexcept;
+//
+// See the table in hours.pass.cpp for correspondence between the magic values used below
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename Duration>
+constexpr long check_minutes(Duration d)
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    ASSERT_SAME_TYPE(std::chrono::minutes, decltype(std::declval<HMS>().minutes()));
+    ASSERT_NOEXCEPT(                                std::declval<HMS>().minutes());
+    return HMS(d).minutes().count();
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_minutes(std::chrono::minutes( 1)) == 1, "");
+    static_assert( check_minutes(std::chrono::minutes(-1)) == 1, "");
+
+    assert( check_minutes(std::chrono::seconds( 5000)) == 23);
+    assert( check_minutes(std::chrono::seconds(-5000)) == 23);
+    assert( check_minutes(std::chrono::minutes( 5000)) == 20);
+    assert( check_minutes(std::chrono::minutes(-5000)) == 20);
+    assert( check_minutes(std::chrono::hours( 11))     == 0);
+    assert( check_minutes(std::chrono::hours(-11))     == 0);
+
+    assert( check_minutes(std::chrono::milliseconds( 123456789LL)) == 17);
+    assert( check_minutes(std::chrono::milliseconds(-123456789LL)) == 17);
+    assert( check_minutes(std::chrono::microseconds( 123456789LL)) == 2);
+    assert( check_minutes(std::chrono::microseconds(-123456789LL)) == 2);
+    assert( check_minutes(std::chrono::nanoseconds( 123456789LL))  == 0);
+    assert( check_minutes(std::chrono::nanoseconds(-123456789LL))  == 0);
+
+    assert( check_minutes(microfortnights(  1000)) == 20);
+    assert( check_minutes(microfortnights( -1000)) == 20);
+    assert( check_minutes(microfortnights( 10000)) == 21);
+    assert( check_minutes(microfortnights(-10000)) == 21);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/precision.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/precision.pass.cpp
new file mode 100644
index 0000000..0d41182
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/precision.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+// {
+// public:
+//     static unsigned constexpr fractional_width = see below;
+//     using precision                            = see below;
+//
+//   precision is duration<common_type_t<Duration::rep, seconds::rep>,
+//                                 ratio<1, 10^^fractional_width>>
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+constexpr unsigned long long powers[] = {
+    1ULL,
+    10ULL,
+    100ULL,
+    1000ULL,
+    10000ULL,
+    100000ULL,
+    1000000ULL,
+    10000000ULL,
+    100000000ULL,
+    1000000000ULL,
+    10000000000ULL,
+    100000000000ULL,
+    1000000000000ULL,
+    10000000000000ULL,
+    100000000000000ULL,
+    1000000000000000ULL,
+    10000000000000000ULL,
+    100000000000000000ULL,
+    1000000000000000000ULL,
+    10000000000000000000ULL
+};
+
+template <typename Duration, unsigned width>
+constexpr bool check_precision()
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    using CT  = std::common_type_t<typename Duration::rep, std::chrono::seconds::rep>;
+    using Pre = std::chrono::duration<CT, std::ratio<1, powers[width]>>;
+    return std::is_same_v<typename HMS::precision, Pre>;
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_precision<std::chrono::hours,                               0>(), "");
+    static_assert( check_precision<std::chrono::minutes,                             0>(), "");
+    static_assert( check_precision<std::chrono::seconds,                             0>(), "");
+    static_assert( check_precision<std::chrono::milliseconds,                        3>(), "");
+    static_assert( check_precision<std::chrono::microseconds,                        6>(), "");
+    static_assert( check_precision<std::chrono::nanoseconds,                         9>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   2>>, 1>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   3>>, 6>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   4>>, 2>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   5>>, 1>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   6>>, 6>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   7>>, 6>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   8>>, 3>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,   9>>, 6>(), "");
+    static_assert( check_precision<std::chrono::duration<int, std::ratio<  1,  10>>, 1>(), "");
+    static_assert( check_precision<microfortnights,                                  4>(), "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp
new file mode 100644
index 0000000..7aa9f3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/seconds.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+//
+// constexpr chrono::seconds seconds() const noexcept;
+//
+// See the table in hours.pass.cpp for correspondence between the magic values used below
+
+#include <chrono>
+#include <cassert>
+#include <cstdint>
+#include <ratio>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename Duration>
+constexpr int64_t check_seconds(Duration d)
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    ASSERT_SAME_TYPE(std::chrono::seconds, decltype(std::declval<HMS>().seconds()));
+    ASSERT_NOEXCEPT(                                std::declval<HMS>().seconds());
+    return HMS(d).seconds().count();
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_seconds(std::chrono::seconds( 1)) == 1, "");
+    static_assert( check_seconds(std::chrono::seconds(-1)) == 1, "");
+
+    assert( check_seconds(std::chrono::seconds( 5000)) == 20);
+    assert( check_seconds(std::chrono::seconds(-5000)) == 20);
+    assert( check_seconds(std::chrono::minutes( 5000)) == 0);
+    assert( check_seconds(std::chrono::minutes(-5000)) == 0);
+    assert( check_seconds(std::chrono::hours( 11))     == 0);
+    assert( check_seconds(std::chrono::hours(-11))     == 0);
+
+    assert( check_seconds(std::chrono::milliseconds( 123456789LL)) == 36);
+    assert( check_seconds(std::chrono::milliseconds(-123456789LL)) == 36);
+    assert( check_seconds(std::chrono::microseconds( 123456789LL)) == 3);
+    assert( check_seconds(std::chrono::microseconds(-123456789LL)) == 3);
+    assert( check_seconds(std::chrono::nanoseconds( 123456789LL))  == 0);
+    assert( check_seconds(std::chrono::nanoseconds(-123456789LL))  == 0);
+
+    assert( check_seconds(microfortnights(  1000)) ==  9);
+    assert( check_seconds(microfortnights( -1000)) ==  9);
+    assert( check_seconds(microfortnights( 10000)) == 36);
+    assert( check_seconds(microfortnights(-10000)) == 36);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp
new file mode 100644
index 0000000..b3b46a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/subseconds.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+//
+// constexpr precision subseconds() const noexcept;
+//
+// See the table in hours.pass.cpp for correspondence between the magic values used below
+
+#include <chrono>
+#include <cassert>
+#include <cstdint>
+#include <ratio>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename Duration>
+constexpr int64_t check_subseconds(Duration d)
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    ASSERT_SAME_TYPE(typename HMS::precision, decltype(std::declval<HMS>().subseconds()));
+    ASSERT_NOEXCEPT(                                   std::declval<HMS>().subseconds());
+    return HMS(d).subseconds().count();
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_subseconds(std::chrono::seconds( 1)) == 0, "");
+    static_assert( check_subseconds(std::chrono::seconds(-1)) == 0, "");
+
+    assert( check_subseconds(std::chrono::seconds( 5000)) == 0);
+    assert( check_subseconds(std::chrono::seconds(-5000)) == 0);
+    assert( check_subseconds(std::chrono::minutes( 5000)) == 0);
+    assert( check_subseconds(std::chrono::minutes(-5000)) == 0);
+    assert( check_subseconds(std::chrono::hours( 11))     == 0);
+    assert( check_subseconds(std::chrono::hours(-11))     == 0);
+
+    assert( check_subseconds(std::chrono::milliseconds( 123456789LL)) == 789);
+    assert( check_subseconds(std::chrono::milliseconds(-123456789LL)) == 789);
+    assert( check_subseconds(std::chrono::microseconds( 123456789LL)) == 456789LL);
+    assert( check_subseconds(std::chrono::microseconds(-123456789LL)) == 456789LL);
+    assert( check_subseconds(std::chrono::nanoseconds( 123456789LL))  == 123456789LL);
+    assert( check_subseconds(std::chrono::nanoseconds(-123456789LL))  == 123456789LL);
+
+    assert( check_subseconds(microfortnights(  1000)) == 6000);
+    assert( check_subseconds(microfortnights( -1000)) == 6000);
+    assert( check_subseconds(microfortnights( 10000)) == 0);
+    assert( check_subseconds(microfortnights(-10000)) == 0);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/to_duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/to_duration.pass.cpp
new file mode 100644
index 0000000..129dcce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/to_duration.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+//
+// constexpr precision to_duration() const noexcept;
+//
+// See the table in hours.pass.cpp for correspondence between the magic values used below
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <utility>
+
+#include "test_macros.h"
+
+template <typename Duration>
+constexpr long long check_duration(Duration d)
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    ASSERT_SAME_TYPE(typename HMS::precision, decltype(std::declval<HMS>().to_duration()));
+    ASSERT_NOEXCEPT(                                   std::declval<HMS>().to_duration());
+
+    return HMS(d).to_duration().count();
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_duration(std::chrono::minutes( 1)) ==  60, "");
+    static_assert( check_duration(std::chrono::minutes(-1)) == -60, "");
+
+    assert( check_duration(std::chrono::seconds( 5000)) ==    5000LL);
+    assert( check_duration(std::chrono::seconds(-5000)) ==   -5000LL);
+    assert( check_duration(std::chrono::minutes( 5000)) ==  300000LL);
+    assert( check_duration(std::chrono::minutes(-5000)) == -300000LL);
+    assert( check_duration(std::chrono::hours( 11))     ==   39600LL);
+    assert( check_duration(std::chrono::hours(-11))     ==  -39600LL);
+
+    assert( check_duration(std::chrono::milliseconds( 123456789LL)) ==  123456789LL);
+    assert( check_duration(std::chrono::milliseconds(-123456789LL)) == -123456789LL);
+    assert( check_duration(std::chrono::microseconds( 123456789LL)) ==  123456789LL);
+    assert( check_duration(std::chrono::microseconds(-123456789LL)) == -123456789LL);
+    assert( check_duration(std::chrono::nanoseconds( 123456789LL))  ==  123456789LL);
+    assert( check_duration(std::chrono::nanoseconds(-123456789LL))  == -123456789LL);
+
+    assert( check_duration(microfortnights(  1000)) ==   12096000);
+    assert( check_duration(microfortnights( -1000)) ==  -12096000);
+    assert( check_duration(microfortnights( 10000)) ==  120960000);
+    assert( check_duration(microfortnights(-10000)) == -120960000);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/width.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/width.pass.cpp
new file mode 100644
index 0000000..adee920
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.members/width.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// <chrono>
+
+// template <class Duration>
+// class hh_mm_ss
+// {
+// public:
+//     static unsigned constexpr fractional_width = see below;
+//     using precision                            = see below;
+//
+//  fractional_width is the number of fractional decimal digits represented by precision.
+//  fractional_width has the value of the smallest possible integer in the range [0, 18]
+//    such that precision will exactly represent all values of Duration.
+//  If no such value of fractional_width exists, then fractional_width is 6.
+
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+
+template <typename Duration, unsigned width>
+constexpr bool check_width()
+{
+    using HMS = std::chrono::hh_mm_ss<Duration>;
+    return HMS::fractional_width == width;
+}
+
+int main(int, char**)
+{
+    using microfortnights = std::chrono::duration<int, std::ratio<756, 625>>;
+
+    static_assert( check_width<std::chrono::hours,                               0>(), "");
+    static_assert( check_width<std::chrono::minutes,                             0>(), "");
+    static_assert( check_width<std::chrono::seconds,                             0>(), "");
+    static_assert( check_width<std::chrono::milliseconds,                        3>(), "");
+    static_assert( check_width<std::chrono::microseconds,                        6>(), "");
+    static_assert( check_width<std::chrono::nanoseconds,                         9>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   2>>, 1>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   3>>, 6>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   4>>, 2>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   5>>, 1>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   6>>, 6>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   7>>, 6>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   8>>, 3>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,   9>>, 6>(), "");
+    static_assert( check_width<std::chrono::duration<int, std::ratio<  1,  10>>, 1>(), "");
+    static_assert( check_width<microfortnights,                                  4>(), "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.nonmembers/nothing.to.do.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.nonmembers/nothing.to.do.pass.cpp
new file mode 100644
index 0000000..dba6619
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.hms/time.hms.nonmembers/nothing.to.do.pass.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// template <class Duration> class hh_mm_ss;
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/default_duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/default_duration.pass.cpp
new file mode 100644
index 0000000..5e95fe0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/default_duration.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// Test default template arg:
+
+// template <class Clock, class Duration = typename Clock::duration>
+//   class time_point;
+
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::chrono::system_clock::duration,
+                   std::chrono::time_point<std::chrono::system_clock>::duration>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/duration.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/duration.compile.fail.cpp
new file mode 100644
index 0000000..6461eb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/duration.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// Duration shall be an instance of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    typedef std::chrono::time_point<std::chrono::system_clock, int> T;
+    T t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.arithmetic/op_+=.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.arithmetic/op_+=.pass.cpp
new file mode 100644
index 0000000..002fffc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.arithmetic/op_+=.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// time_point& operator+=(const duration& d);
+// constexpr in c++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool constexpr_test()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    std::chrono::time_point<Clock, Duration> t(Duration(5));
+    t += Duration(4);
+    return t.time_since_epoch() == Duration(9);
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    std::chrono::time_point<Clock, Duration> t(Duration(3));
+    t += Duration(2);
+    assert(t.time_since_epoch() == Duration(5));
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(constexpr_test(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.arithmetic/op_-=.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.arithmetic/op_-=.pass.cpp
new file mode 100644
index 0000000..2365d53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.arithmetic/op_-=.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// time_point& operator-=(const duration& d);
+// constexpr in c++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+constexpr bool constexpr_test()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    std::chrono::time_point<Clock, Duration> t(Duration(5));
+    t -= Duration(4);
+    return t.time_since_epoch() == Duration(1);
+}
+#endif
+
+int main(int, char**)
+{
+    {
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    std::chrono::time_point<Clock, Duration> t(Duration(3));
+    t -= Duration(2);
+    assert(t.time_since_epoch() == Duration(1));
+    }
+
+#if TEST_STD_VER > 14
+    static_assert(constexpr_test(), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/ceil.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/ceil.compile.fail.cpp
new file mode 100644
index 0000000..fb82fdf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/ceil.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// ceil
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   ceil(const time_point<Clock, Duration>& t);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::ceil<int>(std::chrono::system_clock::now());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/ceil.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/ceil.pass.cpp
new file mode 100644
index 0000000..58bcf73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/ceil.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// ceil
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   ceil(const time_point<Clock, Duration>& t);
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class FromDuration, class ToDuration>
+void
+test(const FromDuration& df, const ToDuration& d)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    FromTimePoint f(df);
+    ToTimePoint t(d);
+    typedef decltype(std::chrono::ceil<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToTimePoint>::value), "");
+    assert(std::chrono::ceil<ToDuration>(f) == t);
+    }
+}
+
+template<class FromDuration, long long From, class ToDuration, long long To>
+void test_constexpr ()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    constexpr FromTimePoint f{FromDuration{From}};
+    constexpr ToTimePoint   t{ToDuration{To}};
+    static_assert(std::chrono::ceil<ToDuration>(f) == t, "");
+    }
+}
+
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 3));
+    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2));
+    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122));
+    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-121));
+
+//  9000000ms is 2 hours and 30 minutes
+    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::hours,    3> ();
+    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::hours,   -2> ();
+    test_constexpr<std::chrono::milliseconds, 9000001, std::chrono::minutes, 151> ();
+    test_constexpr<std::chrono::milliseconds,-9000001, std::chrono::minutes,-150> ();
+
+    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::seconds, 9000> ();
+    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::seconds,-9000> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/floor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/floor.compile.fail.cpp
new file mode 100644
index 0000000..12b1dec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/floor.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// floor
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   floor(const time_point<Clock, Duration>& t);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::floor<int>(std::chrono::system_clock::now());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/floor.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/floor.pass.cpp
new file mode 100644
index 0000000..e53ce86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/floor.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// floor
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   floor(const time_point<Clock, Duration>& t);
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class FromDuration, class ToDuration>
+void
+test(const FromDuration& df, const ToDuration& d)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    FromTimePoint f(df);
+    ToTimePoint t(d);
+    typedef decltype(std::chrono::floor<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToTimePoint>::value), "");
+    assert(std::chrono::floor<ToDuration>(f) == t);
+    }
+}
+
+template<class FromDuration, long long From, class ToDuration, long long To>
+void test_constexpr ()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    constexpr FromTimePoint f{FromDuration{From}};
+    constexpr ToTimePoint   t{ToDuration{To}};
+    static_assert(std::chrono::floor<ToDuration>(f) == t, "");
+    }
+}
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 2));
+    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-3));
+    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 121));
+    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-122));
+
+//  9000000ms is 2 hours and 30 minutes
+    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::hours,    2> ();
+    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::hours,   -3> ();
+    test_constexpr<std::chrono::milliseconds, 9000001, std::chrono::minutes, 150> ();
+    test_constexpr<std::chrono::milliseconds,-9000001, std::chrono::minutes,-151> ();
+
+    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::seconds, 9000> ();
+    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::seconds,-9000> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/round.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/round.compile.fail.cpp
new file mode 100644
index 0000000..a5436c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/round.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// round
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   round(const time_point<Clock, Duration>& t);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    std::chrono::round<int>(std::chrono::system_clock::now());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/round.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/round.pass.cpp
new file mode 100644
index 0000000..4523abd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/round.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <chrono>
+
+// round
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   round(const time_point<Clock, Duration>& t);
+
+#include <chrono>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class FromDuration, class ToDuration>
+void
+test(const FromDuration& df, const ToDuration& d)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    FromTimePoint f(df);
+    ToTimePoint t(d);
+    typedef decltype(std::chrono::round<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToTimePoint>::value), "");
+    assert(std::chrono::round<ToDuration>(f) == t);
+    }
+}
+
+template<class FromDuration, long long From, class ToDuration, long long To>
+void test_constexpr ()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    constexpr FromTimePoint f{FromDuration{From}};
+    constexpr ToTimePoint   t{ToDuration{To}};
+    static_assert(std::chrono::round<ToDuration>(f) == t, "");
+    }
+}
+
+int main(int, char**)
+{
+//  7290000ms is 2 hours, 1 minute, and 30 seconds
+    test(std::chrono::milliseconds( 7290000), std::chrono::hours( 2));
+    test(std::chrono::milliseconds(-7290000), std::chrono::hours(-2));
+    test(std::chrono::milliseconds( 7290000), std::chrono::minutes( 122));
+    test(std::chrono::milliseconds(-7290000), std::chrono::minutes(-122));
+
+//  9000000ms is 2 hours and 30 minutes
+    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::hours,    2> ();
+    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::hours,   -2> ();
+    test_constexpr<std::chrono::milliseconds, 9000001, std::chrono::minutes, 150> ();
+    test_constexpr<std::chrono::milliseconds,-9000001, std::chrono::minutes,-150> ();
+
+    test_constexpr<std::chrono::milliseconds, 9000000, std::chrono::seconds, 9000> ();
+    test_constexpr<std::chrono::milliseconds,-9000000, std::chrono::seconds,-9000> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/time_point_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/time_point_cast.pass.cpp
new file mode 100644
index 0000000..0d82e2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/time_point_cast.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   time_point_cast(const time_point<Clock, Duration>& t);
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class FromDuration, class ToDuration>
+void
+test(const FromDuration& df, const ToDuration& d)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    FromTimePoint f(df);
+    ToTimePoint t(d);
+    typedef decltype(std::chrono::time_point_cast<ToDuration>(f)) R;
+    static_assert((std::is_same<R, ToTimePoint>::value), "");
+    assert(std::chrono::time_point_cast<ToDuration>(f) == t);
+    }
+}
+
+#if TEST_STD_VER > 11
+
+template<class FromDuration, long long From, class ToDuration, long long To>
+void test_constexpr ()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint;
+    typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint;
+    {
+    constexpr FromTimePoint f{FromDuration{From}};
+    constexpr ToTimePoint   t{ToDuration{To}};
+    static_assert(std::chrono::time_point_cast<ToDuration>(f) == t, "");
+    }
+
+}
+
+#endif
+
+int main(int, char**)
+{
+    test(std::chrono::milliseconds(7265000), std::chrono::hours(2));
+    test(std::chrono::milliseconds(7265000), std::chrono::minutes(121));
+    test(std::chrono::milliseconds(7265000), std::chrono::seconds(7265));
+    test(std::chrono::milliseconds(7265000), std::chrono::milliseconds(7265000));
+    test(std::chrono::milliseconds(7265000), std::chrono::microseconds(7265000000LL));
+    test(std::chrono::milliseconds(7265000), std::chrono::nanoseconds(7265000000000LL));
+    test(std::chrono::milliseconds(7265000),
+         std::chrono::duration<double, std::ratio<3600> >(7265./3600));
+    test(std::chrono::duration<int, std::ratio<2, 3> >(9),
+         std::chrono::duration<int, std::ratio<3, 5> >(10));
+#if TEST_STD_VER > 11
+    {
+    test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::hours,    2> ();
+    test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::minutes,121> ();
+    test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::seconds,7265> ();
+    test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::milliseconds,7265000> ();
+    test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::microseconds,7265000000LL> ();
+    test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::nanoseconds,7265000000000LL> ();
+    typedef std::chrono::duration<int, std::ratio<3, 5>> T1;
+    test_constexpr<std::chrono::duration<int, std::ratio<2, 3>>, 9, T1, 10> ();
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/toduration.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/toduration.compile.fail.cpp
new file mode 100644
index 0000000..c16492f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cast/toduration.compile.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class ToDuration, class Clock, class Duration>
+//   time_point<Clock, ToDuration>
+//   time_point_cast(const time_point<Clock, Duration>& t);
+
+// ToDuration shall be an instantiation of duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::time_point<Clock, std::chrono::milliseconds> FromTimePoint;
+    typedef std::chrono::time_point<Clock, std::chrono::minutes> ToTimePoint;
+    std::chrono::time_point_cast<ToTimePoint>(FromTimePoint(std::chrono::milliseconds(3)));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_equal.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_equal.compile.fail.cpp
new file mode 100644
index 0000000..2b57950
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_equal.compile.fail.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// time_points with different clocks should not compare
+
+#include <chrono>
+
+#include "../../clock.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock1;
+    typedef Clock                     Clock2;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    typedef std::chrono::time_point<Clock1, Duration1> T1;
+    typedef std::chrono::time_point<Clock2, Duration2> T2;
+
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3000));
+    t1 == t2;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_equal.pass.cpp
new file mode 100644
index 0000000..f110ec5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_equal.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    typedef std::chrono::time_point<Clock, Duration1> T1;
+    typedef std::chrono::time_point<Clock, Duration2> T2;
+
+    {
+    T1 t1(Duration1(3));
+    T1 t2(Duration1(3));
+    assert( (t1 == t2));
+    assert(!(t1 != t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T1 t2(Duration1(4));
+    assert(!(t1 == t2));
+    assert( (t1 != t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3000));
+    assert( (t1 == t2));
+    assert(!(t1 != t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3001));
+    assert(!(t1 == t2));
+    assert( (t1 != t2));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T1 t2(Duration1(3));
+    static_assert( (t1 == t2), "");
+    static_assert(!(t1 != t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T1 t2(Duration1(4));
+    static_assert(!(t1 == t2), "");
+    static_assert( (t1 != t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T2 t2(Duration2(3000));
+    static_assert( (t1 == t2), "");
+    static_assert(!(t1 != t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T2 t2(Duration2(3001));
+    static_assert(!(t1 == t2), "");
+    static_assert( (t1 != t2), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_less.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_less.compile.fail.cpp
new file mode 100644
index 0000000..3d158ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_less.compile.fail.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// time_points with different clocks should not compare
+
+#include <chrono>
+
+#include "../../clock.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock1;
+    typedef Clock                     Clock2;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    typedef std::chrono::time_point<Clock1, Duration1> T1;
+    typedef std::chrono::time_point<Clock2, Duration2> T2;
+
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3000));
+    t1 < t2;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_less.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_less.pass.cpp
new file mode 100644
index 0000000..3b4aa6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.comparisons/op_less.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    typedef std::chrono::time_point<Clock, Duration1> T1;
+    typedef std::chrono::time_point<Clock, Duration2> T2;
+
+    {
+    T1 t1(Duration1(3));
+    T1 t2(Duration1(3));
+    assert(!(t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert( (t1 >= t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T1 t2(Duration1(4));
+    assert( (t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert(!(t1 >= t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3000));
+    assert(!(t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert( (t1 >= t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3001));
+    assert( (t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert(!(t1 >= t2));
+    }
+
+#if TEST_STD_VER > 11
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T1 t2(Duration1(3));
+    static_assert(!(t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert( (t1 >= t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T1 t2(Duration1(4));
+    static_assert( (t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert(!(t1 >= t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T2 t2(Duration2(3000));
+    static_assert(!(t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert( (t1 >= t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T2 t2(Duration2(3001));
+    static_assert( (t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert(!(t1 >= t2), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/convert.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/convert.compile.fail.cpp
new file mode 100644
index 0000000..2e60117
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/convert.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Duration2>
+//   time_point(const time_point<clock, Duration2>& t);
+
+// Duration2 shall be implicitly convertible to duration.
+
+#include <chrono>
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    {
+    std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
+    std::chrono::time_point<Clock, Duration1> t1 = t2;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/convert.pass.cpp
new file mode 100644
index 0000000..f9b35c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/convert.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Duration2>
+//   time_point(const time_point<clock, Duration2>& t);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::microseconds Duration1;
+    typedef std::chrono::milliseconds Duration2;
+    {
+    std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
+    std::chrono::time_point<Clock, Duration1> t1 = t2;
+    assert(t1.time_since_epoch() == Duration1(3000));
+    }
+#if TEST_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
+    constexpr std::chrono::time_point<Clock, Duration1> t1 = t2;
+    static_assert(t1.time_since_epoch() == Duration1(3000), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/default.pass.cpp
new file mode 100644
index 0000000..e4197aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/default.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// time_point();
+
+#include <chrono>
+#include <cassert>
+#include <ratio>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::duration<Rep, std::milli> Duration;
+    {
+    std::chrono::time_point<Clock, Duration> t;
+    assert(t.time_since_epoch() == Duration::zero());
+    }
+#if TEST_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration> t;
+    static_assert(t.time_since_epoch() == Duration::zero(), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/duration.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/duration.compile.fail.cpp
new file mode 100644
index 0000000..b281162
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/duration.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// explicit time_point(const duration& d);
+
+// test for explicit
+
+#include <chrono>
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    std::chrono::time_point<Clock, Duration> t = Duration(3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/duration.pass.cpp
new file mode 100644
index 0000000..078c664
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.cons/duration.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// explicit time_point(const duration& d);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    {
+    std::chrono::time_point<Clock, Duration> t(Duration(3));
+    assert(t.time_since_epoch() == Duration(3));
+    }
+    {
+    std::chrono::time_point<Clock, Duration> t(std::chrono::seconds(3));
+    assert(t.time_since_epoch() == Duration(3000));
+    }
+#if TEST_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration> t(Duration(3));
+    static_assert(t.time_since_epoch() == Duration(3), "");
+    }
+    {
+    constexpr std::chrono::time_point<Clock, Duration> t(std::chrono::seconds(3));
+    static_assert(t.time_since_epoch() == Duration(3000), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_+.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_+.pass.cpp
new file mode 100644
index 0000000..7d78f7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_+.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Rep2, class Period2>
+//   time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
+//   operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
+
+// template <class Rep1, class Period1, class Clock, class Duration2>
+//   time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type>
+//   operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    {
+    std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    std::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5);
+    assert(t2.time_since_epoch() == Duration2(3005));
+    t2 = Duration2(6) + t1;
+    assert(t2.time_since_epoch() == Duration2(3006));
+    }
+#if TEST_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    constexpr std::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5);
+    static_assert(t2.time_since_epoch() == Duration2(3005), "");
+    constexpr std::chrono::time_point<Clock, Duration2> t3 = Duration2(6) + t1;
+    static_assert(t3.time_since_epoch() == Duration2(3006), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_-duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_-duration.pass.cpp
new file mode 100644
index 0000000..80e9d04
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_-duration.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Rep2, class Period2>
+//   time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
+//   operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+#include <cstdint>
+
+#include "test_macros.h"
+
+template <class D>
+void test2739()  // LWG2739
+{
+    typedef std::chrono::time_point<std::chrono::system_clock> TimePoint;
+    typedef std::chrono::duration<D> Dur;
+    const Dur d(5);
+    TimePoint t0 = std::chrono::system_clock::from_time_t(200);
+    TimePoint t1 = t0 - d;
+    assert(t1 < t0);
+}
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    {
+    std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    std::chrono::time_point<Clock, Duration2> t2 = t1 - Duration2(5);
+    assert(t2.time_since_epoch() == Duration2(2995));
+    }
+#if TEST_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    constexpr std::chrono::time_point<Clock, Duration2> t2 = t1 - Duration2(5);
+    static_assert(t2.time_since_epoch() == Duration2(2995), "");
+    }
+#endif
+    test2739<std::int32_t>();
+    test2739<std::uint32_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_-time_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_-time_point.pass.cpp
new file mode 100644
index 0000000..22e4520
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.nonmember/op_-time_point.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Duration2>
+//   typename common_type<Duration1, Duration2>::type
+//   operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    {
+    std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    std::chrono::time_point<Clock, Duration2> t2(Duration2(5));
+    assert((t1 - t2) == Duration2(2995));
+    }
+#if TEST_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    constexpr std::chrono::time_point<Clock, Duration2> t2(Duration2(5));
+    static_assert((t1 - t2) == Duration2(2995), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.observer/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.observer/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.observer/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.special/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.special/max.pass.cpp
new file mode 100644
index 0000000..e7826b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.special/max.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// static constexpr time_point max(); // noexcept after C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    typedef std::chrono::time_point<Clock, Duration> TP;
+    LIBCPP_ASSERT_NOEXCEPT(TP::max());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(       TP::max());
+#endif
+    assert(TP::max() == TP(Duration::max()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.special/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.special/min.pass.cpp
new file mode 100644
index 0000000..fae3339
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.point/time.point.special/min.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// static constexpr time_point min(); // noexcept after C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration;
+    typedef std::chrono::time_point<Clock, Duration> TP;
+    LIBCPP_ASSERT_NOEXCEPT(TP::max());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(       TP::max());
+#endif
+    assert(TP::min() == TP(Duration::min()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.day.pass.cpp
new file mode 100644
index 0000000..373db72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.day.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::day, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  using namespace std::literals::chrono_literals;
+
+  // Valid day
+  check(SV("01"), SV("{}"), 1d);
+  check(SV("*01*"), SV("{:*^4}"), 1d);
+  check(SV("*01"), SV("{:*>3}"), 1d);
+
+  // Invalid day
+  check(SV("00 is not a valid day"), SV("{}"), 0d);
+  check(SV("*00 is not a valid day*"), SV("{:*^23}"), 0d);
+}
+
+template <class CharT>
+static void test_valid_values() {
+  using namespace std::literals::chrono_literals;
+
+  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%d='%d'%t%%Od='%Od'%t%%e='%e'%t%%Oe='%Oe'%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%d='%d'%t%%Od='%Od'%t%%e='%e'%t%%Oe='%Oe'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%d='00'\t%Od='00'\t%e=' 0'\t%Oe=' 0'\n"), fmt, 0d);
+  check(SV("%d='01'\t%Od='01'\t%e=' 1'\t%Oe=' 1'\n"), fmt, 1d);
+  check(SV("%d='31'\t%Od='31'\t%e='31'\t%Oe='31'\n"), fmt, 31d);
+#if defined(_AIX)
+  check(SV("%d='55'\t%Od='55'\t%e='55'\t%Oe='55'\n"), fmt, 255d);
+#else
+  check(SV("%d='255'\t%Od='255'\t%e='255'\t%Oe='255'\n"), fmt, 255d);
+#endif
+
+  // Use the global locale (fr_FR)
+  check(SV("%d='00'\t%Od='00'\t%e=' 0'\t%Oe=' 0'\n"), lfmt, 0d);
+  check(SV("%d='01'\t%Od='01'\t%e=' 1'\t%Oe=' 1'\n"), lfmt, 1d);
+  check(SV("%d='31'\t%Od='31'\t%e='31'\t%Oe='31'\n"), lfmt, 31d);
+#if defined(_AIX)
+  check(SV("%d='55'\t%Od='55'\t%e='55'\t%Oe='55'\n"), lfmt, 255d);
+#else
+  check(SV("%d='255'\t%Od='255'\t%e='255'\t%Oe='255'\n"), lfmt, 255d);
+#endif
+
+  // Use supplied locale (ja_JP). This locale has a different alternate on some platforms.
+#if defined(__APPLE__) || defined(_AIX)
+  check(loc, SV("%d='00'\t%Od='00'\t%e=' 0'\t%Oe=' 0'\n"), lfmt, 0d);
+  check(loc, SV("%d='01'\t%Od='01'\t%e=' 1'\t%Oe=' 1'\n"), lfmt, 1d);
+  check(loc, SV("%d='31'\t%Od='31'\t%e='31'\t%Oe='31'\n"), lfmt, 31d);
+#  if defined(_AIX)
+  check(SV("%d='55'\t%Od='55'\t%e='55'\t%Oe='55'\n"), fmt, 255d);
+#  else
+  check(SV("%d='255'\t%Od='255'\t%e='255'\t%Oe='255'\n"), fmt, 255d);
+#  endif
+#else  // defined(__APPLE__) || defined(_AIX)
+  check(loc, SV("%d='00'\t%Od='〇'\t%e=' 0'\t%Oe='〇'\n"), lfmt, 0d);
+  check(loc, SV("%d='01'\t%Od='一'\t%e=' 1'\t%Oe='一'\n"), lfmt, 1d);
+  check(loc, SV("%d='31'\t%Od='三十一'\t%e='31'\t%Oe='三十一'\n"), lfmt, 31d);
+  check(loc, SV("%d='255'\t%Od='255'\t%e='255'\t%Oe='255'\n"), lfmt, 255d);
+#endif // defined(__APPLE__) || defined(_AIX)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  using namespace std::literals::chrono_literals;
+
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>({SV("d"), SV("e"), SV("Od"), SV("Oe")}, 0d);
+
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:A"), 0d);
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), 0d);
+  check_exception("End of input while parsing the modifier chrono conversion-spec", SV("{:%"), 0d);
+  check_exception("End of input while parsing the modifier E", SV("{:%E"), 0d);
+  check_exception("End of input while parsing the modifier O", SV("{:%O"), 0d);
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:.3}"), 0d);
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.duration.pass.cpp
new file mode 100644
index 0000000..1a2fcca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.duration.pass.cpp
@@ -0,0 +1,1095 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+//  template<class Rep, class Period, class charT>
+//    struct formatter<chrono::duration<Rep, Period>, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  using namespace std::literals::chrono_literals;
+
+  check(SV("1as"), SV("{}"), std::chrono::duration<int, std::atto>(1));
+  check(SV("1fs"), SV("{}"), std::chrono::duration<int, std::femto>(1));
+  check(SV("1ps"), SV("{}"), std::chrono::duration<int, std::pico>(1));
+  check(SV("1ns"), SV("{}"), 1ns);
+#ifndef TEST_HAS_NO_UNICODE
+  check(SV("1\u00b5s"), SV("{}"), 1us);
+#else
+  check(SV("1us"), SV("{}"), 1us);
+#endif
+  check(SV("1ms"), SV("{}"), 1ms);
+  check(SV("1cs"), SV("{}"), std::chrono::duration<int, std::centi>(1));
+  check(SV("1ds"), SV("{}"), std::chrono::duration<int, std::deci>(1));
+
+  check(SV("1s"), SV("{}"), 1s);
+
+  check(SV("1das"), SV("{}"), std::chrono::duration<int, std::deca>(1));
+  check(SV("1hs"), SV("{}"), std::chrono::duration<int, std::hecto>(1));
+  check(SV("1ks"), SV("{}"), std::chrono::duration<int, std::kilo>(1));
+  check(SV("1Ms"), SV("{}"), std::chrono::duration<int, std::mega>(1));
+  check(SV("1Gs"), SV("{}"), std::chrono::duration<int, std::giga>(1));
+  check(SV("1Ts"), SV("{}"), std::chrono::duration<int, std::tera>(1));
+  check(SV("1Ps"), SV("{}"), std::chrono::duration<int, std::peta>(1));
+  check(SV("1Es"), SV("{}"), std::chrono::duration<int, std::exa>(1));
+
+  check(SV("1min"), SV("{}"), 1min);
+  check(SV("1h"), SV("{}"), 1h);
+  check(SV("1d"), SV("{}"), std::chrono::duration<int, std::ratio<86400>>(1));
+
+  check(SV("1[42]s"), SV("{}"), std::chrono::duration<int, std::ratio<42>>(1));
+  check(SV("1[11]s"), SV("{}"), std::chrono::duration<int, std::ratio<33, 3>>(1));
+  check(SV("1[11/9]s"), SV("{}"), std::chrono::duration<int, std::ratio<11, 9>>(1));
+}
+
+template <class CharT>
+static void test_valid_positive_integral_values() {
+  using namespace std::literals::chrono_literals;
+
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%H='%H'%t"
+      "%%OH='%OH'%t"
+      "%%I='%I'%t"
+      "%%OI='%OI'%t"
+      "%%M='%M'%t"
+      "%%OM='%OM'%t"
+      "%%S='%S'%t"
+      "%%OS='%OS'%t"
+      "%%p='%p'%t"
+      "%%R='%R'%t"
+      "%%T='%T'%t"
+      "%%r='%r'%t"
+      "%%X='%X'%t"
+      "%%EX='%EX'%t"
+      "%%j='%j'%t"
+      "%%Q='%Q'%t"
+      "%%q='%q'%t"
+      "%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%H='%H'%t"
+      "%%OH='%OH'%t"
+      "%%I='%I'%t"
+      "%%OI='%OI'%t"
+      "%%M='%M'%t"
+      "%%OM='%OM'%t"
+      "%%S='%S'%t"
+      "%%OS='%OS'%t"
+      "%%p='%p'%t"
+      "%%R='%R'%t"
+      "%%T='%T'%t"
+      "%%r='%r'%t"
+      "%%X='%X'%t"
+      "%%EX='%EX'%t"
+      "%%j='%j'%t"
+      "%%Q='%Q'%t"
+      "%%q='%q'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%H='00'\t"
+           "%OH='00'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+           "%p='AM'\t"
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+           "%r='12:00:00 AM'\t"
+           "%X='00:00:00'\t"
+           "%EX='00:00:00'\t"
+           "%j='0'\t"
+           "%Q='0'\t"
+           "%q='s'\t"
+           "\n"),
+        fmt,
+        0s);
+
+  check(SV("%H='11'\t"
+           "%OH='11'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+           "%p='AM'\t"
+           "%R='11:59'\t"
+           "%T='11:59:59'\t"
+           "%r='11:59:59 AM'\t"
+           "%X='11:59:59'\t"
+           "%EX='11:59:59'\t"
+           "%j='0'\t"
+           "%Q='43199'\t"
+           "%q='s'\t"
+           "\n"),
+        fmt,
+        11h + 59min + 59s);
+
+  check(SV("%H='12'\t"
+           "%OH='12'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+           "%p='PM'\t"
+           "%R='12:00'\t"
+           "%T='12:00:00'\t"
+           "%r='12:00:00 PM'\t"
+           "%X='12:00:00'\t"
+           "%EX='12:00:00'\t"
+           "%j='0'\t"
+           "%Q='12'\t"
+           "%q='h'\t"
+           "\n"),
+        fmt,
+        12h);
+
+  check(SV("%H='23'\t"
+           "%OH='23'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+           "%p='PM'\t"
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+           "%r='11:59:59 PM'\t"
+           "%X='23:59:59'\t"
+           "%EX='23:59:59'\t"
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        fmt,
+        23h + 59min + 59s);
+
+  check(SV("%H='00'\t"
+           "%OH='00'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+           "%p='AM'\t"
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+           "%r='12:00:00 AM'\t"
+           "%X='00:00:00'\t"
+           "%EX='00:00:00'\t"
+           "%j='7'\t"
+           "%Q='7'\t"
+           "%q='d'\t"
+           "\n"),
+        fmt,
+        std::chrono::duration<int, std::ratio<86400>>(7));
+
+  // Use the global locale (fr_FR)
+  check(SV("%H='00'\t"
+           "%OH='00'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+#if defined(_AIX)
+           "%p='AM'\t"
+#else
+           "%p=''\t"
+#endif
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+#ifdef _WIN32
+           "%r='12:00:00'\t"
+#elif defined(_AIX)
+           "%r='12:00:00 AM'\t"
+#elif defined(__APPLE__)
+           "%r=''\t"
+#else
+           "%r='12:00:00 '\t"
+#endif
+           "%X='00:00:00'\t"
+           "%EX='00:00:00'\t"
+           "%j='0'\t"
+           "%Q='0'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        0s);
+
+  check(SV("%H='11'\t"
+           "%OH='11'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+#if defined(_AIX)
+           "%p='AM'\t"
+#else
+           "%p=''\t"
+#endif
+           "%R='11:59'\t"
+           "%T='11:59:59'\t"
+#ifdef _WIN32
+           "%r='11:59:59'\t"
+#elif defined(_AIX)
+           "%r='11:59:59 AM'\t"
+#elif defined(__APPLE__)
+           "%r=''\t"
+#else
+           "%r='11:59:59 '\t"
+#endif
+           "%X='11:59:59'\t"
+           "%EX='11:59:59'\t"
+           "%j='0'\t"
+           "%Q='43199'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        11h + 59min + 59s);
+
+  check(SV("%H='12'\t"
+           "%OH='12'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+#if defined(_AIX)
+           "%p='PM'\t"
+#else
+           "%p=''\t"
+#endif
+           "%R='12:00'\t"
+           "%T='12:00:00'\t"
+#ifdef _WIN32
+           "%r='00:00:00'\t"
+#elif defined(_AIX)
+           "%r='12:00:00 PM'\t"
+#elif defined(__APPLE__)
+           "%r=''\t"
+#else
+           "%r='12:00:00 '\t"
+#endif
+           "%X='12:00:00'\t"
+           "%EX='12:00:00'\t"
+           "%j='0'\t"
+           "%Q='12'\t"
+           "%q='h'\t"
+           "\n"),
+        lfmt,
+        12h);
+
+  check(SV("%H='23'\t"
+           "%OH='23'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+#if defined(_AIX)
+           "%p='PM'\t"
+#else
+           "%p=''\t"
+#endif
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+#if defined(_AIX)
+           "%r='11:59:59 PM'\t"
+#elif defined(__APPLE__)
+           "%r=''\t"
+#else
+           "%r='11:59:59 '\t"
+#endif
+           "%X='23:59:59'\t"
+           "%EX='23:59:59'\t"
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        23h + 59min + 59s);
+
+  check(SV("%H='00'\t"
+           "%OH='00'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+#if defined(_AIX)
+           "%p='AM'\t"
+#else
+           "%p=''\t"
+#endif
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+#ifdef _WIN32
+           "%r='12:00:00'\t"
+#elif defined(_AIX)
+           "%r='12:00:00 AM'\t"
+#elif defined(__APPLE__)
+           "%r=''\t"
+#else
+           "%r='12:00:00 '\t"
+#endif
+           "%X='00:00:00'\t"
+           "%EX='00:00:00'\t"
+           "%j='7'\t"
+           "%Q='7'\t"
+           "%q='d'\t"
+           "\n"),
+        lfmt,
+        std::chrono::duration<int, std::ratio<86400>>(7));
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+#if defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%H='00'\t"
+           "%OH='00'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+#  if defined(__APPLE__)
+           "%p='AM'\t"
+#  else
+           "%p='午前'\t"
+#  endif
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+#  if defined(__APPLE__)
+           "%r='12:00:00 AM'\t"
+           "%X='00時00分00秒'\t"
+           "%EX='00時00分00秒'\t"
+#  else
+           "%r='午前12:00:00'\t"
+           "%X='00:00:00'\t"
+           "%EX='00:00:00'\t"
+#  endif
+           "%j='0'\t"
+           "%Q='0'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        0s);
+
+  check(loc,
+        SV("%H='11'\t"
+           "%OH='11'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+#  if defined(__APPLE__)
+           "%p='AM'\t"
+#  else
+           "%p='午前'\t"
+#  endif
+           "%R='11:59'\t"
+           "%T='11:59:59'\t"
+#  if defined(__APPLE__)
+           "%r='11:59:59 AM'\t"
+           "%X='11時59分59秒'\t"
+           "%EX='11時59分59秒'\t"
+#  else
+           "%r='午前11:59:59'\t"
+           "%X='11:59:59'\t"
+           "%EX='11:59:59'\t"
+#  endif
+           "%j='0'\t"
+           "%Q='43199'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        11h + 59min + 59s);
+
+  check(loc,
+        SV("%H='12'\t"
+           "%OH='12'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+#  if defined(__APPLE__)
+           "%p='PM'\t"
+#  else
+           "%p='午後'\t"
+#  endif
+           "%R='12:00'\t"
+           "%T='12:00:00'\t"
+#  if defined(__APPLE__)
+           "%r='12:00:00 PM'\t"
+           "%X='12時00分00秒'\t"
+           "%EX='12時00分00秒'\t"
+#  else
+           "%r='午後12:00:00'\t"
+           "%X='12:00:00'\t"
+           "%EX='12:00:00'\t"
+#  endif
+           "%j='0'\t"
+           "%Q='12'\t"
+           "%q='h'\t"
+           "\n"),
+        lfmt,
+        12h);
+
+  check(loc,
+        SV("%H='23'\t"
+           "%OH='23'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+#  if defined(__APPLE__)
+           "%p='PM'\t"
+#  else
+           "%p='午後'\t"
+#  endif
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+#  if defined(__APPLE__)
+           "%r='11:59:59 PM'\t"
+           "%X='23時59分59秒'\t"
+           "%EX='23時59分59秒'\t"
+#  else
+           "%r='午後11:59:59'\t"
+           "%X='23:59:59'\t"
+           "%EX='23:59:59'\t"
+#  endif
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        23h + 59min + 59s);
+
+  check(loc,
+        SV("%H='00'\t"
+           "%OH='00'\t"
+           "%I='12'\t"
+           "%OI='12'\t"
+           "%M='00'\t"
+           "%OM='00'\t"
+           "%S='00'\t"
+           "%OS='00'\t"
+#  if defined(__APPLE__)
+           "%p='AM'\t"
+#  else
+           "%p='午前'\t"
+#  endif
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+#  if defined(__APPLE__)
+           "%r='12:00:00 AM'\t"
+           "%X='00時00分00秒'\t"
+           "%EX='00時00分00秒'\t"
+#  else
+           "%r='午前12:00:00'\t"
+           "%X='00:00:00'\t"
+           "%EX='00:00:00'\t"
+#  endif
+           "%j='7'\t"
+           "%Q='7'\t"
+           "%q='d'\t"
+           "\n"),
+        lfmt,
+        std::chrono::duration<int, std::ratio<86400>>(7));
+#else // defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%H='00'\t"
+           "%OH='〇'\t"
+           "%I='12'\t"
+           "%OI='十二'\t"
+           "%M='00'\t"
+           "%OM='〇'\t"
+           "%S='00'\t"
+           "%OS='〇'\t"
+           "%p='午前'\t"
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+           "%r='午前12時00分00秒'\t"
+           "%X='00時00分00秒'\t"
+           "%EX='00時00分00秒'\t"
+           "%j='0'\t"
+           "%Q='0'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        0s);
+
+  check(loc,
+        SV("%H='11'\t"
+           "%OH='十一'\t"
+           "%I='11'\t"
+           "%OI='十一'\t"
+           "%M='59'\t"
+           "%OM='五十九'\t"
+           "%S='59'\t"
+           "%OS='五十九'\t"
+           "%p='午前'\t"
+           "%R='11:59'\t"
+           "%T='11:59:59'\t"
+           "%r='午前11時59分59秒'\t"
+           "%X='11時59分59秒'\t"
+           "%EX='11時59分59秒'\t"
+           "%j='0'\t"
+           "%Q='43199'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        11h + 59min + 59s);
+
+  check(loc,
+        SV("%H='12'\t"
+           "%OH='十二'\t"
+           "%I='12'\t"
+           "%OI='十二'\t"
+           "%M='00'\t"
+           "%OM='〇'\t"
+           "%S='00'\t"
+           "%OS='〇'\t"
+           "%p='午後'\t"
+           "%R='12:00'\t"
+           "%T='12:00:00'\t"
+           "%r='午後12時00分00秒'\t"
+           "%X='12時00分00秒'\t"
+           "%EX='12時00分00秒'\t"
+           "%j='0'\t"
+           "%Q='12'\t"
+           "%q='h'\t"
+           "\n"),
+        lfmt,
+        12h);
+
+  check(loc,
+        SV("%H='23'\t"
+           "%OH='二十三'\t"
+           "%I='11'\t"
+           "%OI='十一'\t"
+           "%M='59'\t"
+           "%OM='五十九'\t"
+           "%S='59'\t"
+           "%OS='五十九'\t"
+           "%p='午後'\t"
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+           "%r='午後11時59分59秒'\t"
+           "%X='23時59分59秒'\t"
+           "%EX='23時59分59秒'\t"
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        23h + 59min + 59s);
+
+  check(loc,
+        SV("%H='00'\t"
+           "%OH='〇'\t"
+           "%I='12'\t"
+           "%OI='十二'\t"
+           "%M='00'\t"
+           "%OM='〇'\t"
+           "%S='00'\t"
+           "%OS='〇'\t"
+           "%p='午前'\t"
+           "%R='00:00'\t"
+           "%T='00:00:00'\t"
+           "%r='午前12時00分00秒'\t"
+           "%X='00時00分00秒'\t"
+           "%EX='00時00分00秒'\t"
+           "%j='7'\t"
+           "%Q='7'\t"
+           "%q='d'\t"
+           "\n"),
+        lfmt,
+        std::chrono::duration<int, std::ratio<86400>>(7));
+
+#endif // defined(__APPLE__) || defined(_AIX)
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_negative_integral_values() {
+  // [time.format]/4 The result of formatting a std::chrono::duration instance
+  // holding a negative value, or an hh_mm_ss object h for which
+  // h.is_negative() is true, is equivalent to the output of the corresponding
+  // positive value, with a STATICALLY-WIDEN<charT>("-") character sequence
+  // placed before the replacement of the initial conversion specifier.
+  //
+  // Note in this case %% is the initial conversion specifier.
+  using namespace std::literals::chrono_literals;
+
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%H='%H'%t"
+      "%%OH='%OH'%t"
+      "%%I='%I'%t"
+      "%%OI='%OI'%t"
+      "%%M='%M'%t"
+      "%%OM='%OM'%t"
+      "%%S='%S'%t"
+      "%%OS='%OS'%t"
+      "%%p='%p'%t"
+      "%%R='%R'%t"
+      "%%T='%T'%t"
+      "%%r='%r'%t"
+      "%%X='%X'%t"
+      "%%EX='%EX'%t"
+      "%%j='%j'%t"
+      "%%Q='%Q'%t"
+      "%%q='%q'%t"
+      "%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%H='%H'%t"
+      "%%OH='%OH'%t"
+      "%%I='%I'%t"
+      "%%OI='%OI'%t"
+      "%%M='%M'%t"
+      "%%OM='%OM'%t"
+      "%%S='%S'%t"
+      "%%OS='%OS'%t"
+      "%%p='%p'%t"
+      "%%R='%R'%t"
+      "%%T='%T'%t"
+      "%%r='%r'%t"
+      "%%X='%X'%t"
+      "%%EX='%EX'%t"
+      "%%j='%j'%t"
+      "%%Q='%Q'%t"
+      "%%q='%q'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("-%H='23'\t"
+           "%OH='23'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+           "%p='PM'\t"
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+           "%r='11:59:59 PM'\t"
+           "%X='23:59:59'\t"
+           "%EX='23:59:59'\t"
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        fmt,
+        -(23h + 59min + 59s));
+
+  // Use the global locale (fr_FR)
+  check(SV("-%H='23'\t"
+           "%OH='23'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+#if defined(_AIX)
+           "%p='PM'\t"
+#else
+           "%p=''\t"
+#endif
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+#if defined(_AIX)
+           "%r='11:59:59 PM'\t"
+#elif defined(__APPLE__)
+           "%r=''\t"
+#else
+           "%r='11:59:59 '\t"
+#endif
+           "%X='23:59:59'\t"
+           "%EX='23:59:59'\t"
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        -(23h + 59min + 59s));
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+#if defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("-%H='23'\t"
+           "%OH='23'\t"
+           "%I='11'\t"
+           "%OI='11'\t"
+           "%M='59'\t"
+           "%OM='59'\t"
+           "%S='59'\t"
+           "%OS='59'\t"
+#  if defined(__APPLE__)
+           "%p='PM'\t"
+#  else
+           "%p='午後'\t"
+#  endif
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+#  if defined(__APPLE__)
+           "%r='11:59:59 PM'\t"
+           "%X='23時59分59秒'\t"
+           "%EX='23時59分59秒'\t"
+#  else
+           "%r='午後11:59:59'\t"
+           "%X='23:59:59'\t"
+           "%EX='23:59:59'\t"
+#  endif
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        -(23h + 59min + 59s));
+#else  // defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("-%H='23'\t"
+           "%OH='二十三'\t"
+           "%I='11'\t"
+           "%OI='十一'\t"
+           "%M='59'\t"
+           "%OM='五十九'\t"
+           "%S='59'\t"
+           "%OS='五十九'\t"
+           "%p='午後'\t"
+           "%R='23:59'\t"
+           "%T='23:59:59'\t"
+           "%r='午後11時59分59秒'\t"
+           "%X='23時59分59秒'\t"
+           "%EX='23時59分59秒'\t"
+           "%j='0'\t"
+           "%Q='86399'\t"
+           "%q='s'\t"
+           "\n"),
+        lfmt,
+        -(23h + 59min + 59s));
+#endif // defined(__APPLE__) || defined(_AIX)
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_fractional_values() {
+  using namespace std::literals::chrono_literals;
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("00.000000001"), SV("{:%S}"), 1ns);
+  check(SV("00.000000501"), SV("{:%S}"), 501ns);
+  check(SV("00.000001000"), SV("{:%S}"), 1000ns);
+  check(SV("00.000000000001"), SV("{:%S}"), std::chrono::duration<int, std::pico>(1));
+  check(SV("00.000000000000001"), SV("{:%S}"), std::chrono::duration<int, std::femto>(1));
+  check(SV("00.000000000000000001"), SV("{:%S}"), std::chrono::duration<int, std::atto>(1));
+
+  check(SV("00.001"), SV("{:%S}"), 1ms);
+  check(SV("00.01"), SV("{:%S}"), std::chrono::duration<int, std::centi>(1));
+  check(SV("00.1"), SV("{:%S}"), std::chrono::duration<int, std::deci>(1));
+  check(SV("01.1"), SV("{:%S}"), std::chrono::duration<int, std::deci>(11));
+
+  check(SV("00.001"), SV("{:%S}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(SV("00.011"), SV("{:%S}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(SV("01"), SV("{:%S}"), std::chrono::duration<long double>(61.123456789));
+
+  check(SV("00.000000001"), SV("{:%OS}"), 1ns);
+  check(SV("00.000000501"), SV("{:%OS}"), 501ns);
+  check(SV("00.000001000"), SV("{:%OS}"), 1000ns);
+  check(SV("00.000000000001"), SV("{:%OS}"), std::chrono::duration<int, std::pico>(1));
+  check(SV("00.000000000000001"), SV("{:%OS}"), std::chrono::duration<int, std::femto>(1));
+  check(SV("00.000000000000000001"), SV("{:%OS}"), std::chrono::duration<int, std::atto>(1));
+
+  check(SV("00.001"), SV("{:%OS}"), 1ms);
+  check(SV("00.01"), SV("{:%OS}"), std::chrono::duration<int, std::centi>(1));
+  check(SV("00.1"), SV("{:%OS}"), std::chrono::duration<int, std::deci>(1));
+  check(SV("01.1"), SV("{:%OS}"), std::chrono::duration<int, std::deci>(11));
+
+  check(SV("00.001"), SV("{:%OS}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(SV("00.011"), SV("{:%OS}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(SV("01"), SV("{:%OS}"), std::chrono::duration<long double>(61.123456789));
+
+  check(SV("01:05:06.000000001"), SV("{:%T}"), 1h + 5min + 6s + 1ns);
+  check(SV("01:05:06.000000501"), SV("{:%T}"), 1h + 5min + 6s + 501ns);
+  check(SV("01:05:06.000001000"), SV("{:%T}"), 1h + 5min + 6s + 1000ns);
+
+  check(SV("01:05:06.001"), SV("{:%T}"), 1h + 5min + 6s + 1ms);
+  check(SV("01:05:06.01"), SV("{:%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::centi>(1));
+  check(SV("01:05:06.1"), SV("{:%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::deci>(1));
+  check(SV("01:05:07.1"), SV("{:%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::deci>(11));
+
+  check(
+      SV("00:01:02"), SV("{:%T}"), std::chrono::duration<float, std::ratio<60>>(1) + std::chrono::duration<float>(2.5));
+  check(SV("01:05:11"),
+        SV("{:%T}"),
+        std::chrono::duration<double, std::ratio<3600>>(1) + std::chrono::duration<double, std::ratio<60>>(5) +
+            std::chrono::duration<double>(11.123456789));
+  check(SV("01:06:01"),
+        SV("{:%T}"),
+        std::chrono::duration<long double, std::ratio<3600>>(1) +
+            std::chrono::duration<long double, std::ratio<60>>(5) + std::chrono::duration<long double>(61.123456789));
+
+  check(SV("0"), SV("{:%j}"), std::chrono::duration<float, std::milli>(1.));
+  check(SV("1"), SV("{:%j}"), std::chrono::duration<double, std::milli>(86'400'000));
+  check(SV("1"), SV("{:%j}"), std::chrono::duration<long double, std::ratio<7 * 24 * 3600>>(0.14285714286));
+
+  check(SV("1000000"), SV("{:%Q}"), 1'000'000s);
+  check(SV("1"), SV("{:%Q}"), std::chrono::duration<float, std::milli>(1.));
+  check(SV("1.123456789"), SV("{:.6%Q}"), std::chrono::duration<double, std::milli>(1.123456789));
+  check(SV("1.123456789"), SV("{:.9%Q}"), std::chrono::duration<long double, std::milli>(1.123456789));
+
+  // Use the global locale (fr_FR)
+  check(SV("00,000000001"), SV("{:L%S}"), 1ns);
+  check(SV("00,000000501"), SV("{:L%S}"), 501ns);
+  check(SV("00,000001000"), SV("{:L%S}"), 1000ns);
+  check(SV("00,000000000001"), SV("{:L%S}"), std::chrono::duration<int, std::pico>(1));
+  check(SV("00,000000000000001"), SV("{:L%S}"), std::chrono::duration<int, std::femto>(1));
+  check(SV("00,000000000000000001"), SV("{:L%S}"), std::chrono::duration<int, std::atto>(1));
+
+  check(SV("00,001"), SV("{:L%S}"), 1ms);
+  check(SV("00,01"), SV("{:L%S}"), std::chrono::duration<int, std::centi>(1));
+  check(SV("00,1"), SV("{:L%S}"), std::chrono::duration<int, std::deci>(1));
+  check(SV("01,1"), SV("{:L%S}"), std::chrono::duration<int, std::deci>(11));
+
+  check(SV("00,001"), SV("{:L%S}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(SV("00,011"), SV("{:L%S}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(SV("01"), SV("{:L%S}"), std::chrono::duration<long double>(61.123456789));
+
+  check(SV("00,000000001"), SV("{:L%OS}"), 1ns);
+  check(SV("00,000000501"), SV("{:L%OS}"), 501ns);
+  check(SV("00,000001000"), SV("{:L%OS}"), 1000ns);
+  check(SV("00,000000000001"), SV("{:L%OS}"), std::chrono::duration<int, std::pico>(1));
+  check(SV("00,000000000000001"), SV("{:L%OS}"), std::chrono::duration<int, std::femto>(1));
+  check(SV("00,000000000000000001"), SV("{:L%OS}"), std::chrono::duration<int, std::atto>(1));
+
+  check(SV("00,001"), SV("{:L%OS}"), 1ms);
+  check(SV("00,01"), SV("{:L%OS}"), std::chrono::duration<int, std::centi>(1));
+  check(SV("00,1"), SV("{:L%OS}"), std::chrono::duration<int, std::deci>(1));
+  check(SV("01,1"), SV("{:L%OS}"), std::chrono::duration<int, std::deci>(11));
+
+  check(SV("00,001"), SV("{:L%OS}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(SV("00,011"), SV("{:L%OS}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(SV("01"), SV("{:L%OS}"), std::chrono::duration<long double>(61.123456789));
+
+  check(SV("01:05:06,000000001"), SV("{:L%T}"), 1h + 5min + 6s + 1ns);
+  check(SV("01:05:06,000000501"), SV("{:L%T}"), 1h + 5min + 6s + 501ns);
+  check(SV("01:05:06,000001000"), SV("{:L%T}"), 1h + 5min + 6s + 1000ns);
+
+  check(SV("01:05:06,001"), SV("{:L%T}"), 1h + 5min + 6s + 1ms);
+  check(SV("01:05:06,01"), SV("{:L%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::centi>(1));
+  check(SV("01:05:06,1"), SV("{:L%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::deci>(1));
+  check(SV("01:05:07,1"), SV("{:L%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::deci>(11));
+
+  check(SV("00:01:02"),
+        SV("{:L%T}"),
+        std::chrono::duration<float, std::ratio<60>>(1) + std::chrono::duration<float>(2.5));
+  check(SV("01:05:11"),
+        SV("{:L%T}"),
+        std::chrono::duration<double, std::ratio<3600>>(1) + std::chrono::duration<double, std::ratio<60>>(5) +
+            std::chrono::duration<double>(11.123456789));
+  check(SV("01:06:01"),
+        SV("{:L%T}"),
+        std::chrono::duration<long double, std::ratio<3600>>(1) +
+            std::chrono::duration<long double, std::ratio<60>>(5) + std::chrono::duration<long double>(61.123456789));
+
+  check(SV("0"), SV("{:L%j}"), std::chrono::duration<float, std::milli>(1.));
+  check(SV("1"), SV("{:L%j}"), std::chrono::duration<double, std::milli>(86'400'000));
+  check(SV("1"), SV("{:L%j}"), std::chrono::duration<long double, std::ratio<7 * 24 * 3600>>(0.14285714286));
+
+  check(SV("1000000"), SV("{:L%Q}"), 1'000'000s); // The Standard mandates not localized.
+  check(SV("1"), SV("{:L%Q}"), std::chrono::duration<float, std::milli>(1.));
+  check(SV("1.123456789"), SV("{:.6L%Q}"), std::chrono::duration<double, std::milli>(1.123456789));
+  check(SV("1.123456789"), SV("{:.9L%Q}"), std::chrono::duration<long double, std::milli>(1.123456789));
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("00.000000001"), SV("{:L%S}"), 1ns);
+  check(loc, SV("00.000000501"), SV("{:L%S}"), 501ns);
+  check(loc, SV("00.000001000"), SV("{:L%S}"), 1000ns);
+  check(loc, SV("00.000000000001"), SV("{:L%S}"), std::chrono::duration<int, std::pico>(1));
+  check(loc, SV("00.000000000000001"), SV("{:L%S}"), std::chrono::duration<int, std::femto>(1));
+  check(loc, SV("00.000000000000000001"), SV("{:L%S}"), std::chrono::duration<int, std::atto>(1));
+
+  check(loc, SV("00.001"), SV("{:L%S}"), 1ms);
+  check(loc, SV("00.01"), SV("{:L%S}"), std::chrono::duration<int, std::centi>(1));
+  check(loc, SV("00.1"), SV("{:L%S}"), std::chrono::duration<int, std::deci>(1));
+  check(loc, SV("01.1"), SV("{:L%S}"), std::chrono::duration<int, std::deci>(11));
+
+  check(loc, SV("00.001"), SV("{:L%S}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(loc, SV("00.011"), SV("{:L%S}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(loc, SV("01"), SV("{:L%S}"), std::chrono::duration<long double>(61.123456789));
+
+#if defined(__APPLE__) || defined(_AIX)
+  check(SV("00.000000001"), SV("{:%OS}"), 1ns);
+  check(SV("00.000000501"), SV("{:%OS}"), 501ns);
+  check(SV("00.000001000"), SV("{:%OS}"), 1000ns);
+  check(SV("00.000000000001"), SV("{:%OS}"), std::chrono::duration<int, std::pico>(1));
+  check(SV("00.000000000000001"), SV("{:%OS}"), std::chrono::duration<int, std::femto>(1));
+  check(SV("00.000000000000000001"), SV("{:%OS}"), std::chrono::duration<int, std::atto>(1));
+
+  check(SV("00.001"), SV("{:%OS}"), 1ms);
+  check(SV("00.01"), SV("{:%OS}"), std::chrono::duration<int, std::centi>(1));
+  check(SV("00.1"), SV("{:%OS}"), std::chrono::duration<int, std::deci>(1));
+  check(SV("01.1"), SV("{:%OS}"), std::chrono::duration<int, std::deci>(11));
+
+  check(SV("00.001"), SV("{:%OS}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(SV("00.011"), SV("{:%OS}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(SV("01"), SV("{:%OS}"), std::chrono::duration<long double>(61.123456789));
+#else  // defined(__APPLE__) || defined(_AIX)
+  check(loc, SV("〇.000000001"), SV("{:L%OS}"), 1ns);
+  check(loc, SV("〇.000000501"), SV("{:L%OS}"), 501ns);
+  check(loc, SV("〇.000001000"), SV("{:L%OS}"), 1000ns);
+  check(loc, SV("〇.000000000001"), SV("{:L%OS}"), std::chrono::duration<int, std::pico>(1));
+  check(loc, SV("〇.000000000000001"), SV("{:L%OS}"), std::chrono::duration<int, std::femto>(1));
+  check(loc, SV("〇.000000000000000001"), SV("{:L%OS}"), std::chrono::duration<int, std::atto>(1));
+
+  check(loc, SV("〇.001"), SV("{:L%OS}"), 1ms);
+  check(loc, SV("〇.01"), SV("{:L%OS}"), std::chrono::duration<int, std::centi>(1));
+  check(loc, SV("〇.1"), SV("{:L%OS}"), std::chrono::duration<int, std::deci>(1));
+  check(loc, SV("一.1"), SV("{:L%OS}"), std::chrono::duration<int, std::deci>(11));
+
+  check(loc, SV("〇.001"), SV("{:L%OS}"), std::chrono::duration<float, std::milli>(1.123456789));
+  check(loc, SV("〇.011"), SV("{:L%OS}"), std::chrono::duration<double, std::milli>(11.123456789));
+  check(loc, SV("一"), SV("{:L%OS}"), std::chrono::duration<long double>(61.123456789));
+#endif // defined(__APPLE__) || defined(_AIX)
+
+  check(loc, SV("01:05:06.000000001"), SV("{:L%T}"), 1h + 5min + 6s + 1ns);
+  check(loc, SV("01:05:06.000000501"), SV("{:L%T}"), 1h + 5min + 6s + 501ns);
+  check(loc, SV("01:05:06.000001000"), SV("{:L%T}"), 1h + 5min + 6s + 1000ns);
+
+  check(loc, SV("01:05:06.001"), SV("{:L%T}"), 1h + 5min + 6s + 1ms);
+  check(loc, SV("01:05:06.01"), SV("{:L%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::centi>(1));
+  check(loc, SV("01:05:06.1"), SV("{:L%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::deci>(1));
+  check(loc, SV("01:05:07.1"), SV("{:L%T}"), 1h + 5min + 6s + std::chrono::duration<int, std::deci>(11));
+
+  check(loc,
+        SV("00:01:02"),
+        SV("{:L%T}"),
+        std::chrono::duration<float, std::ratio<60>>(1) + std::chrono::duration<float>(2.5));
+  check(loc,
+        SV("01:05:11"),
+        SV("{:L%T}"),
+        std::chrono::duration<double, std::ratio<3600>>(1) + std::chrono::duration<double, std::ratio<60>>(5) +
+            std::chrono::duration<double>(11.123456789));
+  check(loc,
+        SV("01:06:01"),
+        SV("{:L%T}"),
+        std::chrono::duration<long double, std::ratio<3600>>(1) +
+            std::chrono::duration<long double, std::ratio<60>>(5) + std::chrono::duration<long double>(61.123456789));
+
+  check(loc, SV("0"), SV("{:L%j}"), std::chrono::duration<float, std::milli>(1.));
+  check(loc, SV("1"), SV("{:L%j}"), std::chrono::duration<double, std::milli>(86'400'000));
+  check(loc, SV("1"), SV("{:L%j}"), std::chrono::duration<long double, std::ratio<7 * 24 * 3600>>(0.14285714286));
+
+  check(loc, SV("1000000"), SV("{:L%Q}"), 1'000'000s); // The Standard mandates not localized.
+  check(loc, SV("1"), SV("{:L%Q}"), std::chrono::duration<float, std::milli>(1.));
+  check(loc, SV("1.123456789"), SV("{:.6L%Q}"), std::chrono::duration<double, std::milli>(1.123456789));
+  check(loc, SV("1.123456789"), SV("{:.9L%Q}"), std::chrono::duration<long double, std::milli>(1.123456789));
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_values() {
+  test_valid_positive_integral_values<CharT>();
+  test_valid_negative_integral_values<CharT>();
+  test_valid_fractional_values<CharT>();
+}
+
+template <class CharT>
+static void test() {
+  using namespace std::literals::chrono_literals;
+
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("H"), SV("I"), SV("j"), SV("M"), SV("n"), SV("O"),  SV("p"),  SV("q"),  SV("Q"),  SV("r"),
+       SV("R"), SV("S"), SV("t"), SV("T"), SV("X"), SV("EX"), SV("OH"), SV("OI"), SV("OM"), SV("OS")},
+      0ms);
+
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:A"), 0ms);
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), 0ms);
+  check_exception("End of input while parsing the modifier chrono conversion-spec", SV("{:%"), 0ms);
+  check_exception("End of input while parsing the modifier E", SV("{:%E"), 0ms);
+  check_exception("End of input while parsing the modifier O", SV("{:%O"), 0ms);
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:.3}"), 0ms);
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month.pass.cpp
new file mode 100644
index 0000000..324887f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month.pass.cpp
@@ -0,0 +1,198 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::month, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid month
+  check(SV("Jan"), SV("{}"), std::chrono::month{1});
+  check(SV("*Jan*"), SV("{:*^5}"), std::chrono::month{1});
+  check(SV("*Jan"), SV("{:*>4}"), std::chrono::month{1});
+
+  // Invalid month
+  check(SV("0 is not a valid month"), SV("{}"), std::chrono::month{0});
+  check(SV("*0 is not a valid month*"), SV("{:*^24}"), std::chrono::month{0});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  // Test that %b, %h, and %B throw an exception.
+  check_exception("formatting a month name from an invalid month number", SV("{:%b}"), std::chrono::month{200});
+  check_exception("formatting a month name from an invalid month number", SV("{:%b}"), std::chrono::month{13});
+  check_exception("formatting a month name from an invalid month number", SV("{:%b}"), std::chrono::month{255});
+
+  check_exception("formatting a month name from an invalid month number", SV("{:%h}"), std::chrono::month{0});
+  check_exception("formatting a month name from an invalid month number", SV("{:%h}"), std::chrono::month{13});
+  check_exception("formatting a month name from an invalid month number", SV("{:%h}"), std::chrono::month{255});
+
+  check_exception("formatting a month name from an invalid month number", SV("{:%B}"), std::chrono::month{0});
+  check_exception("formatting a month name from an invalid month number", SV("{:%B}"), std::chrono::month{13});
+  check_exception("formatting a month name from an invalid month number", SV("{:%B}"), std::chrono::month{255});
+
+  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\n"), fmt, std::chrono::January);
+  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\n"), fmt, std::chrono::February);
+  check(SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\n"), fmt, std::chrono::March);
+  check(SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\n"), fmt, std::chrono::April);
+  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\n"), fmt, std::chrono::May);
+  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\n"), fmt, std::chrono::June);
+  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\n"), fmt, std::chrono::July);
+  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\n"), fmt, std::chrono::August);
+  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\n"), fmt, std::chrono::September);
+  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\n"), fmt, std::chrono::October);
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\n"), fmt, std::chrono::November);
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\n"), fmt, std::chrono::December);
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\n"), lfmt, std::chrono::January);
+  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\n"), lfmt, std::chrono::February);
+  check(SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::March);
+  check(SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::April);
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::May);
+  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::June);
+  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::July);
+  check(SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::August);
+  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\n"), lfmt, std::chrono::September);
+  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\n"), lfmt, std::chrono::October);
+  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\n"), lfmt, std::chrono::November);
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\n"), lfmt, std::chrono::December);
+#else // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\n"), lfmt, std::chrono::January);
+  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\n"), lfmt, std::chrono::February);
+  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::March);
+#  if defined(_WIN32) || defined(_AIX)
+  check(SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::April);
+#  else
+  check(SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::April);
+#  endif
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::May);
+  check(SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::June);
+  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::July);
+  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::August);
+  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\n"), lfmt, std::chrono::September);
+  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\n"), lfmt, std::chrono::October);
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\n"), lfmt, std::chrono::November);
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\n"), lfmt, std::chrono::December);
+#endif // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#if defined(_WIN32)
+  check(loc, SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\n"), lfmt, std::chrono::January);
+  check(loc, SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\n"), lfmt, std::chrono::February);
+  check(loc, SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::March);
+  check(loc, SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::April);
+  check(loc, SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::May);
+  check(loc, SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::June);
+  check(loc, SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::July);
+  check(loc, SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::August);
+  check(loc, SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\n"), lfmt, std::chrono::September);
+  check(loc, SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"), lfmt, std::chrono::October);
+  check(loc, SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"), lfmt, std::chrono::November);
+  check(loc, SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"), lfmt, std::chrono::December);
+#elif defined(_AIX)      // defined(_WIN32)
+  check(loc, SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\n"), lfmt, std::chrono::January);
+  check(loc, SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\n"), lfmt, std::chrono::February);
+  check(loc, SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::March);
+  check(loc, SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::April);
+  check(loc, SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::May);
+  check(loc, SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::June);
+  check(loc, SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::July);
+  check(loc, SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::August);
+  check(loc, SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\n"), lfmt, std::chrono::September);
+  check(loc, SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"), lfmt, std::chrono::October);
+  check(loc, SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"), lfmt, std::chrono::November);
+  check(loc, SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"), lfmt, std::chrono::December);
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc, SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\n"), lfmt, std::chrono::January);
+  check(loc, SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\n"), lfmt, std::chrono::February);
+  check(loc, SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::March);
+  check(loc, SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::April);
+  check(loc, SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::May);
+  check(loc, SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::June);
+  check(loc, SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::July);
+  check(loc, SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::August);
+  check(loc, SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\n"), lfmt, std::chrono::September);
+  check(loc, SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"), lfmt, std::chrono::October);
+  check(loc, SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"), lfmt, std::chrono::November);
+  check(loc, SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"), lfmt, std::chrono::December);
+#else                    // defined(_WIN32)
+  check(loc, SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\n"), lfmt, std::chrono::January);
+  check(loc, SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\n"), lfmt, std::chrono::February);
+  check(loc, SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\n"), lfmt, std::chrono::March);
+  check(loc, SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\n"), lfmt, std::chrono::April);
+  check(loc, SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\n"), lfmt, std::chrono::May);
+  check(loc, SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\n"), lfmt, std::chrono::June);
+  check(loc, SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\n"), lfmt, std::chrono::July);
+  check(loc, SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\n"), lfmt, std::chrono::August);
+  check(loc, SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\n"), lfmt, std::chrono::September);
+  check(loc, SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\n"), lfmt, std::chrono::October);
+  check(loc, SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\n"), lfmt, std::chrono::November);
+  check(loc, SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\n"), lfmt, std::chrono::December);
+#endif                   //  defined(_WIN32)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>({SV("b"), SV("B"), SV("h"), SV("m"), SV("Om")}, std::chrono::January);
+
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:A"), std::chrono::January);
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), std::chrono::January);
+  check_exception("End of input while parsing the modifier chrono conversion-spec", SV("{:%"), std::chrono::January);
+  check_exception("End of input while parsing the modifier E", SV("{:%E"), std::chrono::January);
+  check_exception("End of input while parsing the modifier O", SV("{:%O"), std::chrono::January);
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:.3}"), std::chrono::January);
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_day.pass.cpp
new file mode 100644
index 0000000..f86476f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_day.pass.cpp
@@ -0,0 +1,491 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::month_day, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid month "valid" day
+  check(SV("Feb/31"), SV("{}"), std::chrono::month_day{std::chrono::month{2}, std::chrono::day{31}});
+  check(SV("*Feb/31*"), SV("{:*^8}"), std::chrono::month_day{std::chrono::month{2}, std::chrono::day{31}});
+  check(SV("*Feb/31"), SV("{:*>7}"), std::chrono::month_day{std::chrono::month{2}, std::chrono::day{31}});
+
+  // Invalid month "valid" day
+  check(SV("0 is not a valid month/31"), SV("{}"), std::chrono::month_day{std::chrono::month{0}, std::chrono::day{31}});
+  check(SV("*0 is not a valid month/31*"),
+        SV("{:*^27}"),
+        std::chrono::month_day{std::chrono::month{0}, std::chrono::day{31}});
+
+  // Valid month invalid day
+  check(SV("Feb/32 is not a valid day"), SV("{}"), std::chrono::month_day{std::chrono::month{2}, std::chrono::day{32}});
+  check(SV("*Feb/32 is not a valid day*"),
+        SV("{:*^27}"),
+        std::chrono::month_day{std::chrono::month{2}, std::chrono::day{32}});
+  check(SV("*Feb/32 is not a valid day"),
+        SV("{:*>26}"),
+        std::chrono::month_day{std::chrono::month{2}, std::chrono::day{32}});
+
+  // Invalid month invalid day
+  check(SV("0 is not a valid month/32 is not a valid day"),
+        SV("{}"),
+        std::chrono::month_day{std::chrono::month{0}, std::chrono::day{32}});
+  check(SV("*0 is not a valid month/32 is not a valid day*"),
+        SV("{:*^46}"),
+        std::chrono::month_day{std::chrono::month{0}, std::chrono::day{32}});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  // Test that %b, %h, and %B throw an exception.
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::month_day{std::chrono::month{200}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::month_day{std::chrono::month{13}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::month_day{std::chrono::month{255}, std::chrono::day{31}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::month_day{std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::month_day{std::chrono::month{13}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::month_day{std::chrono::month{255}, std::chrono::day{31}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::month_day{std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::month_day{std::chrono::month{13}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::month_day{std::chrono::month{255}, std::chrono::day{31}});
+
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+#if defined(_AIX)
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\t%d='55'\t%e='55'\t%Od='55'\t%Oe='55'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#else  //  defined(_AIX)
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        fmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#endif //  defined(_AIX)
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#else    // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(
+#  if defined(_WIN32) || defined(_AIX)
+      SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+#  else  // defined(_WIN32) || defined(_AIX)
+      SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+#  endif // defined(_WIN32) || defined(_AIX)
+      lfmt,
+      std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+#  if defined(_AIX)
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\t%d='55'\t%e='55'\t%Od='55'\t%Oe='55'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#  else  //   defined(_AIX)
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#  endif //   defined(_AIX)
+#endif   // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#if defined(_WIN32)
+  check(loc,
+        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='〇'\t%Oe='〇'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='一'\t%Oe='一'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='九'\t%Oe='九'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='十'\t%Oe='十'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='二十八'\t%Oe='二十八'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='二十九'\t%Oe='二十九'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='三十二'\t%Oe='三十二'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='九十九'\t%Oe='九十九'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#elif defined(_AIX)      // defined(_WIN32)
+  check(loc,
+        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\t%d='55'\t%e='55'\t%Od='55'\t%Oe='55'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#else                    // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\t%d='00'\t%e=' 0'\t%Od='〇'\t%Oe='〇'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\t%d='01'\t%e=' 1'\t%Od='一'\t%Oe='一'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\t%d='09'\t%e=' 9'\t%Od='九'\t%Oe='九'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\t%d='10'\t%e='10'\t%Od='十'\t%Oe='十'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\t%d='28'\t%e='28'\t%Od='二十八'\t%Oe='二十八'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\t%d='29'\t%e='29'\t%Od='二十九'\t%Oe='二十九'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\t%d='32'\t%e='32'\t%Od='三十二'\t%Oe='三十二'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\t%d='99'\t%e='99'\t%Od='九十九'\t%Oe='九十九'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::month_day{std::chrono::December, std::chrono::day{255}});
+#endif                   //  defined(_WIN32)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>({SV("b"), SV("B"), SV("d"), SV("e"), SV("h"), SV("m"), SV("Od"), SV("Oe"), SV("Om")},
+                             std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:A"),
+                  std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+  check_exception("The chrono-specs contains a '{'",
+                  SV("{:%%{"),
+                  std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+  check_exception("End of input while parsing the modifier chrono conversion-spec",
+                  SV("{:%"),
+                  std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+  check_exception("End of input while parsing the modifier E",
+                  SV("{:%E"),
+                  std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+  check_exception("End of input while parsing the modifier O",
+                  SV("{:%O"),
+                  std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:.3}"),
+                  std::chrono::month_day{std::chrono::January, std::chrono::day{31}});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_day_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_day_last.pass.cpp
new file mode 100644
index 0000000..7c78271
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_day_last.pass.cpp
@@ -0,0 +1,405 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::month_day_last, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid month
+  check(SV("Jan/last"), SV("{}"), std::chrono::month_day_last{std::chrono::month{1}});
+  check(SV("*Jan/last*"), SV("{:*^10}"), std::chrono::month_day_last{std::chrono::month{1}});
+  check(SV("*Jan/last"), SV("{:*>9}"), std::chrono::month_day_last{std::chrono::month{1}});
+
+  // Invalid month
+  check(SV("0 is not a valid month/last"), SV("{}"), std::chrono::month_day_last{std::chrono::month{0}});
+  check(SV("*0 is not a valid month/last*"), SV("{:*^29}"), std::chrono::month_day_last{std::chrono::month{0}});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  // Test that %b, %h, and %B throw an exception.
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::month_day_last{std::chrono::month{200}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::month_day_last{std::chrono::month{13}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::month_day_last{std::chrono::month{255}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::month_day_last{std::chrono::month{0}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::month_day_last{std::chrono::month{13}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::month_day_last{std::chrono::month{255}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::month_day_last{std::chrono::month{0}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::month_day_last{std::chrono::month{13}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::month_day_last{std::chrono::month{255}});
+
+  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(
+      SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\n"), fmt, std::chrono::month_day_last{std::chrono::March});
+  check(
+      SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\n"), fmt, std::chrono::month_day_last{std::chrono::April});
+  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\n"), fmt, std::chrono::month_day_last{std::chrono::May});
+  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\n"), fmt, std::chrono::month_day_last{std::chrono::June});
+  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\n"), fmt, std::chrono::month_day_last{std::chrono::July});
+  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::August});
+  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\n"),
+        fmt,
+        std::chrono::month_day_last{std::chrono::December});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(
+      SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::month_day_last{std::chrono::March});
+  check(
+      SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::month_day_last{std::chrono::April});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
+  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
+  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::July});
+  check(
+      SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::month_day_last{std::chrono::August});
+  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::December});
+#else    // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::March});
+  check(
+#  if defined(_WIN32) || defined(_AIX)
+      SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\n"),
+#  else  // defined(_WIN32) || defined(_AIX)
+      SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\n"),
+#  endif // defined(_WIN32) || defined(_AIX)
+      lfmt,
+      std::chrono::month_day_last{std::chrono::April});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
+  check(
+      SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
+  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::July});
+  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::August});
+  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::December});
+#endif   // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#ifdef _WIN32
+  check(loc,
+        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(loc,
+        SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(
+      loc, SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\n"), lfmt, std::chrono::month_day_last{std::chrono::March});
+  check(
+      loc, SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\n"), lfmt, std::chrono::month_day_last{std::chrono::April});
+  check(loc, SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
+  check(loc, SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
+  check(loc, SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::month_day_last{std::chrono::July});
+  check(
+      loc, SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\n"), lfmt, std::chrono::month_day_last{std::chrono::August});
+  check(loc,
+        SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::December});
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(loc,
+        SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(loc,
+        SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::March});
+  check(loc,
+        SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::April});
+  check(
+      loc, SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\n"), lfmt, std::chrono::month_day_last{std::chrono::May});
+  check(
+      loc, SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\n"), lfmt, std::chrono::month_day_last{std::chrono::June});
+  check(
+      loc, SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\n"), lfmt, std::chrono::month_day_last{std::chrono::July});
+  check(loc,
+        SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::August});
+  check(loc,
+        SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::December});
+#elif defined(_AIX)      // defined(_WIN32)
+  check(loc,
+        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(loc,
+        SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(loc,
+        SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::March});
+  check(loc,
+        SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::April});
+  check(loc,
+        SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::May});
+  check(loc,
+        SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::June});
+  check(loc,
+        SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::July});
+  check(loc,
+        SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::August});
+  check(loc,
+        SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::December});
+#else                    // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::January});
+  check(loc,
+        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::February});
+  check(loc,
+        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::March});
+  check(loc,
+        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::April});
+  check(loc,
+        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::May});
+  check(loc,
+        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::June});
+  check(loc,
+        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::July});
+  check(loc,
+        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::August});
+  check(loc,
+        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::September});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::October});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::November});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\n"),
+        lfmt,
+        std::chrono::month_day_last{std::chrono::December});
+#endif                   // defined(_WIN32)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("b"), SV("B"), SV("h"), SV("m"), SV("Om")}, std::chrono::month_day_last{std::chrono::January});
+
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string", SV("{:A"), std::chrono::month_day_last{std::chrono::January});
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), std::chrono::month_day_last{std::chrono::January});
+  check_exception("End of input while parsing the modifier chrono conversion-spec",
+                  SV("{:%"),
+                  std::chrono::month_day_last{std::chrono::January});
+  check_exception(
+      "End of input while parsing the modifier E", SV("{:%E"), std::chrono::month_day_last{std::chrono::January});
+  check_exception(
+      "End of input while parsing the modifier O", SV("{:%O"), std::chrono::month_day_last{std::chrono::January});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:.3}"),
+                  std::chrono::month_day_last{std::chrono::January});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_weekday.pass.cpp
new file mode 100644
index 0000000..f34b22c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.month_weekday.pass.cpp
@@ -0,0 +1,723 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::month_weekday, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Month: valid,   weekday: valid,   index: invalid
+  check(SV("Jan/Sun[0 is not a valid index]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});
+  check(SV("*Jan/Sun[0 is not a valid index]*"),
+        SV("{:*^33}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});
+  check(SV("*Jan/Sun[0 is not a valid index]"),
+        SV("{:*>32}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});
+
+  // Month: valid,   weekday: invalid, index: valid
+  check(SV("Jan/8 is not a valid weekday[1]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+  check(SV("*Jan/8 is not a valid weekday[1]*"),
+        SV("{:*^33}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+  check(SV("*Jan/8 is not a valid weekday[1]"),
+        SV("{:*>32}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+
+  // Month: valid,   weekday: invalid,   index: invalid
+  check(SV("Jan/8 is not a valid weekday[0 is not a valid index]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});
+  check(SV("*Jan/8 is not a valid weekday[0 is not a valid index]*"),
+        SV("{:*^54}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});
+  check(SV("*Jan/8 is not a valid weekday[0 is not a valid index]"),
+        SV("{:*>53}"),
+        std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});
+
+  // Month: invalid, weekday: valid,   index: valid
+  check(SV("0 is not a valid month/Sun[1]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("*0 is not a valid month/Sun[1]*"),
+        SV("{:*^31}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("*0 is not a valid month/Sun[1]"),
+        SV("{:*>30}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+
+  // Month: invalid, weekday: valid,   index: invalid
+  check(SV("0 is not a valid month/Sun[0 is not a valid index]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});
+  check(SV("*0 is not a valid month/Sun[0 is not a valid index]*"),
+        SV("{:*^52}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});
+  check(SV("*0 is not a valid month/Sun[0 is not a valid index]"),
+        SV("{:*>51}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 0}});
+
+  // Month: invalid, weekday: invalid, index: valid
+  check(SV("0 is not a valid month/8 is not a valid weekday[1]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+  check(SV("*0 is not a valid month/8 is not a valid weekday[1]*"),
+        SV("{:*^52}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+  check(SV("*0 is not a valid month/8 is not a valid weekday[1]"),
+        SV("{:*>51}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+
+  // Month: invalid, weekday: valid,   index: invalid
+  check(SV("0 is not a valid month/8 is not a valid weekday[0 is not a valid index]"),
+        SV("{}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});
+  check(SV("*0 is not a valid month/8 is not a valid weekday[0 is not a valid index]*"),
+        SV("{:*^73}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});
+  check(SV("*0 is not a valid month/8 is not a valid weekday[0 is not a valid index]"),
+        SV("{:*>72}"),
+        std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 0}});
+}
+
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a, %b, %h, %a, and %B throw an exception.
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%a}"),
+      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%a}"),
+      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{255}, 1}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::month_weekday{std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::month_weekday{std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::month_weekday{std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::month_weekday{std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%A}"),
+      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{8}, 1}});
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%A}"),
+      std::chrono::month_weekday{std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{255}, 1}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::month_weekday{std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::month_weekday{std::chrono::month{13}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::month_weekday{std::chrono::month{255}, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+}
+
+template <class CharT>
+static void test_valid_month() {
+  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+#else    // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(
+#  if defined(_WIN32) || defined(_AIX)
+      SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\n"),
+#  else  // defined(_WIN32) || defined(_AIX)
+      SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\n"),
+#  endif // defined(_WIN32) || defined(_AIX)
+      lfmt,
+      std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+#endif   // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#ifdef _WIN32
+  check(loc,
+        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+#elif defined(_AIX)      // _WIN32
+  check(loc,
+        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+#else                    // _WIN32
+  check(loc,
+        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::February, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::March, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::April, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::June, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::July, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::August, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::September, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::October, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::November, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+#endif                   // _WIN32
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_weekday() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Mon'\t%A='Monday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Tue'\t%A='Tuesday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Wed'\t%A='Wednesday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Thu'\t%A='Thursday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Fri'\t%A='Friday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sat'\t%A='Saturday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),
+        fmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Lun'\t%A='Lundi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Mar'\t%A='Mardi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Mer'\t%A='Mercredi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Jeu'\t%A='Jeudi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Ven'\t%A='Vendredi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sam'\t%A='Samedi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});
+#else  // defined(__APPLE__)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='lun.'\t%A='lundi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='mar.'\t%A='mardi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='mer.'\t%A='mercredi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='jeu.'\t%A='jeudi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='ven.'\t%A='vendredi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='sam.'\t%A='samedi'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});
+#endif // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP).
+  // This locale has a different alternate, but not on all platforms
+#if defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='月'\t%A='月曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(loc,
+        SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='火'\t%A='火曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});
+  check(loc,
+        SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='水'\t%A='水曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});
+  check(loc,
+        SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='木'\t%A='木曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(loc,
+        SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='金'\t%A='金曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});
+  check(loc,
+        SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='土'\t%A='土曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});
+  check(loc,
+        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});
+#else  // defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check(loc,
+        SV("%u='1'\t%Ou='一'\t%w='1'\t%Ow='一'\t%a='月'\t%A='月曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(loc,
+        SV("%u='2'\t%Ou='二'\t%w='2'\t%Ow='二'\t%a='火'\t%A='火曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{2}, 1}});
+  check(loc,
+        SV("%u='3'\t%Ou='三'\t%w='3'\t%Ow='三'\t%a='水'\t%A='水曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{3}, 1}});
+  check(loc,
+        SV("%u='4'\t%Ou='四'\t%w='4'\t%Ow='四'\t%a='木'\t%A='木曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(loc,
+        SV("%u='5'\t%Ou='五'\t%w='5'\t%Ow='五'\t%a='金'\t%A='金曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{5}, 1}});
+  check(loc,
+        SV("%u='6'\t%Ou='六'\t%w='6'\t%Ow='六'\t%a='土'\t%A='土曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{6}, 1}});
+  check(loc,
+        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{7}, 1}});
+#endif // defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_values() {
+  test_valid_month<CharT>();
+  test_valid_weekday<CharT>();
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_invalid_values<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("a"), SV("A"), SV("b"), SV("B"), SV("h"), SV("m"), SV("u"), SV("w"), SV("Om"), SV("Ou"), SV("Ow")},
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string",
+      SV("{:A"),
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "The chrono-specs contains a '{'",
+      SV("{:%%{"),
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "End of input while parsing the modifier chrono conversion-spec",
+      SV("{:%"),
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "End of input while parsing the modifier E",
+      SV("{:%E"),
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+  check_exception(
+      "End of input while parsing the modifier O",
+      SV("{:%O"),
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+
+  // Precision not allowed
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string",
+      SV("{:.3}"),
+      std::chrono::month_weekday{std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{0}, 1}});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday.pass.cpp
new file mode 100644
index 0000000..1b3fbe9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday.pass.cpp
@@ -0,0 +1,198 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::weekday, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  using namespace std::literals::chrono_literals;
+
+  // Valid day
+  check(SV("Sun"), SV("{}"), std::chrono::weekday(0));
+
+  // Invalid day
+  check(SV("8 is not a valid weekday"), SV("{}"), std::chrono::weekday(8));
+}
+
+template <class CharT>
+static void test_valid_values() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"), fmt, std::chrono::weekday(0));
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Mon'\t%A='Monday'\n"), fmt, std::chrono::weekday(1));
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Tue'\t%A='Tuesday'\n"), fmt, std::chrono::weekday(2));
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Wed'\t%A='Wednesday'\n"), fmt, std::chrono::weekday(3));
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Thu'\t%A='Thursday'\n"), fmt, std::chrono::weekday(4));
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Fri'\t%A='Friday'\n"), fmt, std::chrono::weekday(5));
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sat'\t%A='Saturday'\n"), fmt, std::chrono::weekday(6));
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"), fmt, std::chrono::weekday(7));
+
+#if defined(__APPLE__)
+  // Use the global locale (fr_FR)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"), lfmt, std::chrono::weekday(0));
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Lun'\t%A='Lundi'\n"), lfmt, std::chrono::weekday(1));
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Mar'\t%A='Mardi'\n"), lfmt, std::chrono::weekday(2));
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Mer'\t%A='Mercredi'\n"), lfmt, std::chrono::weekday(3));
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Jeu'\t%A='Jeudi'\n"), lfmt, std::chrono::weekday(4));
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Ven'\t%A='Vendredi'\n"), lfmt, std::chrono::weekday(5));
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sam'\t%A='Samedi'\n"), lfmt, std::chrono::weekday(6));
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"), lfmt, std::chrono::weekday(7));
+#else
+  // Use the global locale (fr_FR)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"), lfmt, std::chrono::weekday(0));
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='lun.'\t%A='lundi'\n"), lfmt, std::chrono::weekday(1));
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='mar.'\t%A='mardi'\n"), lfmt, std::chrono::weekday(2));
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='mer.'\t%A='mercredi'\n"), lfmt, std::chrono::weekday(3));
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='jeu.'\t%A='jeudi'\n"), lfmt, std::chrono::weekday(4));
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='ven.'\t%A='vendredi'\n"), lfmt, std::chrono::weekday(5));
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='sam.'\t%A='samedi'\n"), lfmt, std::chrono::weekday(6));
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"), lfmt, std::chrono::weekday(7));
+#endif
+
+  // Use supplied locale (ja_JP).
+  // This locale has a different alternate, but not on all platforms
+#if defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc, SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"), lfmt, std::chrono::weekday(0));
+  check(loc, SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='月'\t%A='月曜日'\n"), lfmt, std::chrono::weekday(1));
+  check(loc, SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='火'\t%A='火曜日'\n"), lfmt, std::chrono::weekday(2));
+  check(loc, SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='水'\t%A='水曜日'\n"), lfmt, std::chrono::weekday(3));
+  check(loc, SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='木'\t%A='木曜日'\n"), lfmt, std::chrono::weekday(4));
+  check(loc, SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='金'\t%A='金曜日'\n"), lfmt, std::chrono::weekday(5));
+  check(loc, SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='土'\t%A='土曜日'\n"), lfmt, std::chrono::weekday(6));
+  check(loc, SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"), lfmt, std::chrono::weekday(7));
+#else
+  check(loc, SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"), lfmt, std::chrono::weekday(0));
+  check(loc, SV("%u='1'\t%Ou='一'\t%w='1'\t%Ow='一'\t%a='月'\t%A='月曜日'\n"), lfmt, std::chrono::weekday(1));
+  check(loc, SV("%u='2'\t%Ou='二'\t%w='2'\t%Ow='二'\t%a='火'\t%A='火曜日'\n"), lfmt, std::chrono::weekday(2));
+  check(loc, SV("%u='3'\t%Ou='三'\t%w='3'\t%Ow='三'\t%a='水'\t%A='水曜日'\n"), lfmt, std::chrono::weekday(3));
+  check(loc, SV("%u='4'\t%Ou='四'\t%w='4'\t%Ow='四'\t%a='木'\t%A='木曜日'\n"), lfmt, std::chrono::weekday(4));
+  check(loc, SV("%u='5'\t%Ou='五'\t%w='5'\t%Ow='五'\t%a='金'\t%A='金曜日'\n"), lfmt, std::chrono::weekday(5));
+  check(loc, SV("%u='6'\t%Ou='六'\t%w='6'\t%Ow='六'\t%a='土'\t%A='土曜日'\n"), lfmt, std::chrono::weekday(6));
+  check(loc, SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"), lfmt, std::chrono::weekday(7));
+#endif
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a and %A throw an exception.
+  check_exception("formatting a weekday name needs a valid weekday", SV("{:%a}"), std::chrono::weekday(8));
+  check_exception("formatting a weekday name needs a valid weekday", SV("{:%a}"), std::chrono::weekday(255));
+  check_exception("formatting a weekday name needs a valid weekday", SV("{:%A}"), std::chrono::weekday(8));
+  check_exception("formatting a weekday name needs a valid weekday", SV("{:%A}"), std::chrono::weekday(255));
+
+  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+#if defined(__APPLE__)
+  // Non localized output using C-locale
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday(8));
+  check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"), fmt, std::chrono::weekday(255));
+
+  // Use the global locale (fr_FR)
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday(8));
+  check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday(255));
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday(8));
+  check(loc, SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday(255));
+#elif defined(_AIX)
+  // Non localized output using C-locale
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday(8));
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), fmt, std::chrono::weekday(255));
+
+  // Use the global locale (fr_FR)
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday(8));
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), lfmt, std::chrono::weekday(255));
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday(8));
+  check(loc, SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), lfmt, std::chrono::weekday(255));
+#else
+  // Non localized output using C-locale
+  check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday(8));
+  check(SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), fmt, std::chrono::weekday(255));
+
+  // Use the global locale (fr_FR)
+  check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday(8));
+  check(SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday(255));
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("%u='1'\t%Ou='一'\t%w='8'\t%Ow='八'\n"), lfmt, std::chrono::weekday(8));
+  check(loc, SV("%u='3'\t%Ou='三'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday(255));
+
+#endif
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  test_invalid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("a"), SV("A"), SV("t"), SV("u"), SV("w"), SV("Ou"), SV("Ow")}, std::chrono::weekday(0));
+
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:A"), std::chrono::weekday(0));
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), std::chrono::weekday(0));
+  check_exception("End of input while parsing the modifier chrono conversion-spec", SV("{:%"), std::chrono::weekday(0));
+  check_exception("End of input while parsing the modifier E", SV("{:%E"), std::chrono::weekday(0));
+  check_exception("End of input while parsing the modifier O", SV("{:%O"), std::chrono::weekday(0));
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:.3}"), std::chrono::weekday(0));
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday_index.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday_index.pass.cpp
new file mode 100644
index 0000000..5493034
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday_index.pass.cpp
@@ -0,0 +1,412 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::weekday_index, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  using namespace std::literals::chrono_literals;
+
+  // Valid weekday valid index
+  check(SV("Sun[1]"), SV("{}"), std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+
+  // Invalid weekday valid index
+  check(SV("8 is not a valid weekday[1]"), SV("{}"), std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+  check(SV("255 is not a valid weekday[1]"), SV("{}"), std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+  // Valid weekday invalid index
+  check(SV("Sun[0 is not a valid index]"), SV("{}"), std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+  check(SV("Sun[6 is not a valid index]"), SV("{}"), std::chrono::weekday_indexed{std::chrono::weekday(0), 6});
+  check(SV("Sun[255 is not a valid index]"), SV("{}"), std::chrono::weekday_indexed{std::chrono::weekday(0), 255});
+
+  // Invalid weekday invalid index
+  check(SV("8 is not a valid weekday[0 is not a valid index]"),
+        SV("{}"),
+        std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+  check(SV("127 is not a valid weekday[6 is not a valid index]"),
+        SV("{}"),
+        std::chrono::weekday_indexed{std::chrono::weekday(127), 6});
+  check(SV("255 is not a valid weekday[255 is not a valid index]"),
+        SV("{}"),
+        std::chrono::weekday_indexed{std::chrono::weekday(255), 255});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Mon'\t%A='Monday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(1), 1});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Tue'\t%A='Tuesday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(2), 2});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Wed'\t%A='Wednesday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(3), 3});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Thu'\t%A='Thursday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(4), 4});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Fri'\t%A='Friday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(5), 5});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sat'\t%A='Saturday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(6), 6});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),
+        fmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(7), 7});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Lun'\t%A='Lundi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(1), 1});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Mar'\t%A='Mardi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(2), 2});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Mer'\t%A='Mercredi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(3), 3});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Jeu'\t%A='Jeudi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(4), 4});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Ven'\t%A='Vendredi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(5), 5});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sam'\t%A='Samedi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(6), 6});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(7), 7});
+#else  // defined(__APPLE__)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='lun.'\t%A='lundi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(1), 1});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='mar.'\t%A='mardi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(2), 2});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='mer.'\t%A='mercredi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(3), 3});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='jeu.'\t%A='jeudi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(4), 4});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='ven.'\t%A='vendredi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(5), 5});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='sam.'\t%A='samedi'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(6), 6});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(7), 7});
+#endif // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP).
+  // This locale has a different alternate, but not on all platforms
+#if defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+  check(loc,
+        SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='月'\t%A='月曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(1), 1});
+  check(loc,
+        SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='火'\t%A='火曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(2), 2});
+  check(loc,
+        SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='水'\t%A='水曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(3), 3});
+  check(loc,
+        SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='木'\t%A='木曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(4), 4});
+  check(loc,
+        SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='金'\t%A='金曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(5), 5});
+  check(loc,
+        SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='土'\t%A='土曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(6), 6});
+  check(loc,
+        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(7), 7});
+#else  // defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+  check(loc,
+        SV("%u='1'\t%Ou='一'\t%w='1'\t%Ow='一'\t%a='月'\t%A='月曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(1), 1});
+  check(loc,
+        SV("%u='2'\t%Ou='二'\t%w='2'\t%Ow='二'\t%a='火'\t%A='火曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(2), 2});
+  check(loc,
+        SV("%u='3'\t%Ou='三'\t%w='3'\t%Ow='三'\t%a='水'\t%A='水曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(3), 3});
+  check(loc,
+        SV("%u='4'\t%Ou='四'\t%w='4'\t%Ow='四'\t%a='木'\t%A='木曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(4), 4});
+  check(loc,
+        SV("%u='5'\t%Ou='五'\t%w='5'\t%Ow='五'\t%a='金'\t%A='金曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(5), 5});
+  check(loc,
+        SV("%u='6'\t%Ou='六'\t%w='6'\t%Ow='六'\t%a='土'\t%A='土曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(6), 6});
+  check(loc,
+        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_indexed{std::chrono::weekday(7), 7});
+#endif // defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a and %A throw an exception.
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  { // Invalid weekday, can't test %a and %A
+    constexpr std::basic_string_view<CharT> fmt  = SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%n}");
+    constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%n}");
+#if defined(__APPLE__)
+    // Non localized output using C-locale
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+          fmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+          fmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+    // Use the global locale (fr_FR)
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+    // Use supplied locale (ja_JP). This locale has a different alternate.
+    check(
+        loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(
+        loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(loc,
+          SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(loc,
+          SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+#elif defined(_AIX) //  defined(__APPLE__)
+    // Non localized output using C-locale
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+    // Use the global locale (fr_FR)
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+    // Use supplied locale (ja_JP). This locale has a different alternate.
+    check(
+        loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(
+        loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(loc,
+          SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(loc,
+          SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+#else               // defined(__APPLE__)
+    // Non localized output using C-locale
+    check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(
+        SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(
+        SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+    // Use the global locale (fr_FR)
+    check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(
+        SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(
+        SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+
+    // Use supplied locale (ja_JP). This locale has a different alternate.
+    check(loc,
+          SV("%u='1'\t%Ou='一'\t%w='8'\t%Ow='八'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 0});
+    check(loc,
+          SV("%u='1'\t%Ou='一'\t%w='8'\t%Ow='八'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(8), 1});
+    check(loc,
+          SV("%u='3'\t%Ou='三'\t%w='255'\t%Ow='255'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 0});
+    check(loc,
+          SV("%u='3'\t%Ou='三'\t%w='255'\t%Ow='255'\n"),
+          lfmt,
+          std::chrono::weekday_indexed{std::chrono::weekday(255), 1});
+#endif              // defined(__APPLE__)
+  }
+
+  { // Valid weekday, tests %a and %A
+    constexpr std::basic_string_view<CharT> fmt  = SV("{:%%a='%a'%t%%A='%A'%n}");
+    constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%a='%a'%t%%A='%A'%n}");
+
+    // Non localized output using C-locale
+    check(SV("%a='Sun'\t%A='Sunday'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+    check(SV("%a='Sun'\t%A='Sunday'\n"), fmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 6});
+
+    // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+    check(SV("%a='Dim'\t%A='Dimanche'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+    check(SV("%a='Dim'\t%A='Dimanche'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 6});
+#else  // defined(__APPLE__)
+    check(SV("%a='dim.'\t%A='dimanche'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+    check(SV("%a='dim.'\t%A='dimanche'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 6});
+#endif // defined(__APPLE__)
+
+    // Use supplied locale (ja_JP)
+    check(loc, SV("%a='日'\t%A='日曜日'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 0});
+    check(loc, SV("%a='日'\t%A='日曜日'\n"), lfmt, std::chrono::weekday_indexed{std::chrono::weekday(0), 6});
+  }
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  test_invalid_values<CharT>();
+  check_invalid_types<CharT>({SV("a"), SV("A"), SV("t"), SV("u"), SV("w"), SV("Ou"), SV("Ow")},
+                             std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:A"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+  check_exception(
+      "The chrono-specs contains a '{'", SV("{:%%{"), std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+  check_exception("End of input while parsing the modifier chrono conversion-spec",
+                  SV("{:%"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+  check_exception("End of input while parsing the modifier E",
+                  SV("{:%E"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+  check_exception("End of input while parsing the modifier O",
+                  SV("{:%O"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:.3}"),
+                  std::chrono::weekday_indexed{std::chrono::weekday(0), 1});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday_last.pass.cpp
new file mode 100644
index 0000000..e3fa9ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.weekday_last.pass.cpp
@@ -0,0 +1,313 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::weekday_last, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  using namespace std::literals::chrono_literals;
+
+  // Valid day
+  check(SV("Sun[last]"), SV("{}"), std::chrono::weekday_last{std::chrono::weekday(0)});
+
+  // Invalid day
+  check(SV("8 is not a valid weekday[last]"), SV("{}"), std::chrono::weekday_last{std::chrono::weekday(8)});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%t%%a='%a'%t%%A='%A'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(0)});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Mon'\t%A='Monday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(1)});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Tue'\t%A='Tuesday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(2)});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Wed'\t%A='Wednesday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(3)});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Thu'\t%A='Thursday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(4)});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Fri'\t%A='Friday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(5)});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sat'\t%A='Saturday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(6)});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Sun'\t%A='Sunday'\n"),
+        fmt,
+        std::chrono::weekday_last{std::chrono::weekday(7)});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(0)});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='Lun'\t%A='Lundi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(1)});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='Mar'\t%A='Mardi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(2)});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='Mer'\t%A='Mercredi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(3)});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='Jeu'\t%A='Jeudi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(4)});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='Ven'\t%A='Vendredi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(5)});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='Sam'\t%A='Samedi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(6)});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='Dim'\t%A='Dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(7)});
+#else  // defined(__APPLE__)
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(0)});
+  check(SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='lun.'\t%A='lundi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(1)});
+  check(SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='mar.'\t%A='mardi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(2)});
+  check(SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='mer.'\t%A='mercredi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(3)});
+  check(SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='jeu.'\t%A='jeudi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(4)});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='ven.'\t%A='vendredi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(5)});
+  check(SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='sam.'\t%A='samedi'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(6)});
+  check(SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='dim.'\t%A='dimanche'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(7)});
+#endif // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP).
+  // This locale has a different alternate, but not on all platforms
+#if defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(0)});
+  check(loc,
+        SV("%u='1'\t%Ou='1'\t%w='1'\t%Ow='1'\t%a='月'\t%A='月曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(1)});
+  check(loc,
+        SV("%u='2'\t%Ou='2'\t%w='2'\t%Ow='2'\t%a='火'\t%A='火曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(2)});
+  check(loc,
+        SV("%u='3'\t%Ou='3'\t%w='3'\t%Ow='3'\t%a='水'\t%A='水曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(3)});
+  check(loc,
+        SV("%u='4'\t%Ou='4'\t%w='4'\t%Ow='4'\t%a='木'\t%A='木曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(4)});
+  check(loc,
+        SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\t%a='金'\t%A='金曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(5)});
+  check(loc,
+        SV("%u='6'\t%Ou='6'\t%w='6'\t%Ow='6'\t%a='土'\t%A='土曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(6)});
+  check(loc,
+        SV("%u='7'\t%Ou='7'\t%w='0'\t%Ow='0'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(7)});
+#else  // defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(0)});
+  check(loc,
+        SV("%u='1'\t%Ou='一'\t%w='1'\t%Ow='一'\t%a='月'\t%A='月曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(1)});
+  check(loc,
+        SV("%u='2'\t%Ou='二'\t%w='2'\t%Ow='二'\t%a='火'\t%A='火曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(2)});
+  check(loc,
+        SV("%u='3'\t%Ou='三'\t%w='3'\t%Ow='三'\t%a='水'\t%A='水曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(3)});
+  check(loc,
+        SV("%u='4'\t%Ou='四'\t%w='4'\t%Ow='四'\t%a='木'\t%A='木曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(4)});
+  check(loc,
+        SV("%u='5'\t%Ou='五'\t%w='5'\t%Ow='五'\t%a='金'\t%A='金曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(5)});
+  check(loc,
+        SV("%u='6'\t%Ou='六'\t%w='6'\t%Ow='六'\t%a='土'\t%A='土曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(6)});
+  check(loc,
+        SV("%u='7'\t%Ou='七'\t%w='0'\t%Ow='〇'\t%a='日'\t%A='日曜日'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(7)});
+#endif // defined(_WIN32) || defined(__APPLE__) || defined(_AIX)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a and %A throw an exception.
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::weekday_last{std::chrono::weekday(8)});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::weekday_last{std::chrono::weekday(255)});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::weekday_last{std::chrono::weekday(8)});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  constexpr std::basic_string_view<CharT> fmt  = SV("{:%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV("{:L%%u='%u'%t%%Ou='%Ou'%t%%w='%w'%t%%Ow='%Ow'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+#if defined(__APPLE__)
+  // Non localized output using C-locale
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"), fmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  // Use the global locale (fr_FR)
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(loc,
+        SV("%u='255'\t%Ou='255'\t%w='255'\t%Ow='255'\n"),
+        lfmt,
+        std::chrono::weekday_last{std::chrono::weekday(255)});
+#elif defined(_AIX) // defined(__APPLE__)
+  // Non localized output using C-locale
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), fmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  // Use the global locale (fr_FR)
+  check(SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("%u='8'\t%Ou='8'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(loc, SV("%u='5'\t%Ou='5'\t%w='5'\t%Ow='5'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+#else               //  defined(__APPLE__)
+  // Non localized output using C-locale
+  check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), fmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), fmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  // Use the global locale (fr_FR)
+  check(SV("%u='1'\t%Ou='1'\t%w='8'\t%Ow='8'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(SV("%u='3'\t%Ou='3'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+  check(loc, SV("%u='1'\t%Ou='一'\t%w='8'\t%Ow='八'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(8)});
+  check(loc, SV("%u='3'\t%Ou='三'\t%w='255'\t%Ow='255'\n"), lfmt, std::chrono::weekday_last{std::chrono::weekday(255)});
+#endif              // defined(__APPLE__)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  test_invalid_values<CharT>();
+  check_invalid_types<CharT>({SV("a"), SV("A"), SV("t"), SV("u"), SV("w"), SV("Ou"), SV("Ow")},
+                             std::chrono::weekday_last{std::chrono::weekday(0)});
+
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string", SV("{:A"), std::chrono::weekday_last{std::chrono::weekday(0)});
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), std::chrono::weekday_last{std::chrono::weekday(0)});
+  check_exception("End of input while parsing the modifier chrono conversion-spec",
+                  SV("{:%"),
+                  std::chrono::weekday_last{std::chrono::weekday(0)});
+  check_exception(
+      "End of input while parsing the modifier E", SV("{:%E"), std::chrono::weekday_last{std::chrono::weekday(0)});
+  check_exception(
+      "End of input while parsing the modifier O", SV("{:%O"), std::chrono::weekday_last{std::chrono::weekday(0)});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:.3}"),
+                  std::chrono::weekday_last{std::chrono::weekday(0)});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year.pass.cpp
new file mode 100644
index 0000000..beb4732
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year.pass.cpp
@@ -0,0 +1,310 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::year, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  check(SV("-32767"), SV("{}"), std::chrono::year{-32'767});
+  check(SV("-1000"), SV("{}"), std::chrono::year{-1000});
+  check(SV("-0100"), SV("{}"), std::chrono::year{-100});
+  check(SV("-0010"), SV("{}"), std::chrono::year{-10});
+  check(SV("-0001"), SV("{}"), std::chrono::year{-1});
+  check(SV("0000"), SV("{}"), std::chrono::year{0});
+  check(SV("0001"), SV("{}"), std::chrono::year{1});
+  check(SV("0010"), SV("{}"), std::chrono::year{10});
+  check(SV("0100"), SV("{}"), std::chrono::year{100});
+  check(SV("1000"), SV("{}"), std::chrono::year{1000});
+  check(SV("32727"), SV("{}"), std::chrono::year{32'727});
+
+  // Invalid year
+  check(SV("-32768 is not a valid year"), SV("{}"), std::chrono::year{-32'768});
+  check(SV("-32768 is not a valid year"), SV("{}"), std::chrono::year{32'768});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%C='%C'%t"
+      "%%EC='%EC'%t"
+      "%%y='%y'%t"
+      "%%Ey='%Ey'%t"
+      "%%Oy='%Oy'%t"
+      "%%Y='%Y'%t"
+      "%%EY='%EY'%t"
+      "%n}");
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%C='%C'%t"
+      "%%EC='%EC'%t"
+      "%%y='%y'%t"
+      "%%Ey='%Ey'%t"
+      "%%Oy='%Oy'%t"
+      "%%Y='%Y'%t"
+      "%%EY='%EY'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%C='00'\t"
+#if defined(__APPLE__)
+           "%EC='00'\t"
+#else
+           "%EC='0'\t"
+#endif
+           "%y='00'\t"
+           "%Ey='00'\t"
+           "%Oy='00'\t"
+           "%Y='0000'\t"
+#if defined(__APPLE__)
+           "%EY='0000'\t"
+#elif defined(_AIX)
+           "%EY=''\t"
+#else
+           "%EY='0'\t"
+#endif
+           "\n"),
+        fmt,
+        std::chrono::year{0});
+
+  check(SV("%C='19'\t"
+           "%EC='19'\t"
+           "%y='70'\t"
+           "%Ey='70'\t"
+           "%Oy='70'\t"
+           "%Y='1970'\t"
+           "%EY='1970'\t"
+           "\n"),
+        fmt,
+        std::chrono::year{1970});
+
+  check(SV("%C='20'\t"
+           "%EC='20'\t"
+           "%y='38'\t"
+           "%Ey='38'\t"
+           "%Oy='38'\t"
+           "%Y='2038'\t"
+           "%EY='2038'\t"
+           "\n"),
+        fmt,
+        std::chrono::year{2038});
+
+  // Use the global locale (fr_FR)
+  check(SV("%C='00'\t"
+#if defined(__APPLE__)
+           "%EC='00'\t"
+#else
+           "%EC='0'\t"
+#endif
+           "%y='00'\t"
+           "%Ey='00'\t"
+           "%Oy='00'\t"
+           "%Y='0000'\t"
+#if defined(__APPLE__)
+           "%EY='0000'\t"
+#elif defined(_AIX)
+           "%EY=''\t"
+#else
+           "%EY='0'\t"
+#endif
+           "\n"),
+        lfmt,
+        std::chrono::year{0});
+
+  check(SV("%C='19'\t"
+           "%EC='19'\t"
+           "%y='70'\t"
+           "%Ey='70'\t"
+           "%Oy='70'\t"
+           "%Y='1970'\t"
+           "%EY='1970'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year{1970});
+
+  check(SV("%C='20'\t"
+           "%EC='20'\t"
+           "%y='38'\t"
+           "%Ey='38'\t"
+           "%Oy='38'\t"
+           "%Y='2038'\t"
+           "%EY='2038'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year{2038});
+
+  // Use supplied locale (ja_JP). This locale has a different alternate.
+#if defined(__APPLE__) || defined(_AIX)
+
+  check(SV("%C='00'\t"
+#  if defined(__APPLE__)
+           "%EC='00'\t"
+#  else
+           "%EC='0'\t"
+#  endif
+           "%y='00'\t"
+           "%Ey='00'\t"
+           "%Oy='00'\t"
+           "%Y='0000'\t"
+#  if defined(_AIX)
+           "%EY=''\t"
+#  else
+           "%EY='0000'\t"
+#  endif
+           "\n"),
+        lfmt,
+        std::chrono::year{0});
+
+  check(SV("%C='19'\t"
+           "%EC='19'\t"
+           "%y='70'\t"
+           "%Ey='70'\t"
+           "%Oy='70'\t"
+           "%Y='1970'\t"
+           "%EY='1970'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year{1970});
+
+  check(SV("%C='20'\t"
+           "%EC='20'\t"
+           "%y='38'\t"
+           "%Ey='38'\t"
+           "%Oy='38'\t"
+           "%Y='2038'\t"
+           "%EY='2038'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year{2038});
+
+#else // defined(__APPLE__) || defined(_AIX)
+  check(loc,
+        SV("%C='00'\t"
+           "%EC='紀元前'\t"
+           "%y='00'\t"
+// https://sourceware.org/bugzilla/show_bug.cgi?id=23758
+#  if defined(__GLIBC__) && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 29
+           "%Ey='1'\t"
+#  else
+           "%Ey='01'\t"
+#  endif
+           "%Oy='〇'\t"
+           "%Y='0000'\t"
+// https://sourceware.org/bugzilla/show_bug.cgi?id=23758
+#  if defined(__GLIBC__) && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 29
+           "%EY='紀元前1年'\t"
+#  else
+           "%EY='紀元前01年'\t"
+#  endif
+           "\n"),
+        lfmt,
+        std::chrono::year{0});
+
+  check(loc,
+        SV("%C='19'\t"
+           "%EC='昭和'\t"
+           "%y='70'\t"
+           "%Ey='45'\t"
+           "%Oy='七十'\t"
+           "%Y='1970'\t"
+           "%EY='昭和45年'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year{1970});
+
+  // Note this test will fail if the Reiwa era ends before 2038.
+  check(loc,
+        SV("%C='20'\t"
+           "%EC='令和'\t"
+           "%y='38'\t"
+           "%Ey='20'\t"
+           "%Oy='三十八'\t"
+           "%Y='2038'\t"
+           "%EY='令和20年'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year{2038});
+#endif // defined(__APPLE__) || defined(_AIX)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_padding() {
+  constexpr std::basic_string_view<CharT> fmt = SV("{:%%C='%C'%t%%y='%y'%t%%Y='%Y'%t%n}");
+
+  check(SV("%C='-100'\t%y='99'\t%Y='-9999'\t\n"), fmt, std::chrono::year{-9'999});
+  check(SV("%C='-10'\t%y='99'\t%Y='-0999'\t\n"), fmt, std::chrono::year{-999});
+  check(SV("%C='-1'\t%y='99'\t%Y='-0099'\t\n"), fmt, std::chrono::year{-99});
+  check(SV("%C='-1'\t%y='09'\t%Y='-0009'\t\n"), fmt, std::chrono::year{-9});
+  check(SV("%C='00'\t%y='00'\t%Y='0000'\t\n"), fmt, std::chrono::year{0});
+  check(SV("%C='00'\t%y='09'\t%Y='0009'\t\n"), fmt, std::chrono::year{9});
+  check(SV("%C='00'\t%y='99'\t%Y='0099'\t\n"), fmt, std::chrono::year{99});
+  check(SV("%C='09'\t%y='99'\t%Y='0999'\t\n"), fmt, std::chrono::year{999});
+  check(SV("%C='99'\t%y='99'\t%Y='9999'\t\n"), fmt, std::chrono::year{9'999});
+  check(SV("%C='100'\t%y='00'\t%Y='10000'\t\n"), fmt, std::chrono::year{10'000});
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_valid_values<CharT>();
+  test_padding<CharT>();
+  check_invalid_types<CharT>(
+      {SV("C"), SV("y"), SV("Y"), SV("EC"), SV("Ey"), SV("EY"), SV("Oy")}, std::chrono::year{1970});
+
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:A"), std::chrono::year{1970});
+  check_exception("The chrono-specs contains a '{'", SV("{:%%{"), std::chrono::year{1970});
+  check_exception("End of input while parsing the modifier chrono conversion-spec", SV("{:%"), std::chrono::year{1970});
+  check_exception("End of input while parsing the modifier E", SV("{:%E"), std::chrono::year{1970});
+  check_exception("End of input while parsing the modifier O", SV("{:%O"), std::chrono::year{1970});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string", SV("{:.3}"), std::chrono::year{1970});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month.pass.cpp
new file mode 100644
index 0000000..344967d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month.pass.cpp
@@ -0,0 +1,290 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::year_month, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid month
+  check(SV("1970/Jan"), SV("{}"), std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{1}});
+  check(SV("*1970/Jan*"), SV("{:*^10}"), std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{1}});
+  check(SV("*1970/Jan"), SV("{:*>9}"), std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{1}});
+
+  // Invalid month_day
+  check(SV("1970/0 is not a valid month"),
+        SV("{}"),
+        std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{0}});
+  check(SV("*1970/0 is not a valid month*"),
+        SV("{:*^29}"),
+        std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{0}});
+}
+
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %b and %B throw an exception.
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{0}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::month{0}});
+}
+
+template <class CharT>
+static void test_valid_values() {
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%b='%b'%t"
+      "%%B='%B'%t"
+      "%%C='%C'%t"
+      "%%h='%h'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%b='%b'%t"
+      "%%B='%B'%t"
+      "%%C='%C'%t"
+      "%%h='%h'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t"
+           "%B='January'\t"
+           "%C='19'\t"
+           "%h='Jan'\t"
+           "%y='70'\t"
+           "%Y='1970'\t"
+           "%EC='19'\t"
+           "%Ey='70'\t"
+           "%EY='1970'\t"
+           "%Oy='70'\t"
+           "\n"),
+        fmt,
+        std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+
+  check(SV("%b='May'\t"
+           "%B='May'\t"
+           "%C='20'\t"
+           "%h='May'\t"
+           "%y='04'\t"
+           "%Y='2004'\t"
+           "%EC='20'\t"
+           "%Ey='04'\t"
+           "%EY='2004'\t"
+           "%Oy='04'\t"
+           "\n"),
+        fmt,
+        std::chrono::year_month{std::chrono::year{2004}, std::chrono::May});
+
+  // Use the global locale (fr_FR)
+  check(SV(
+#if defined(__APPLE__)
+            "%b='jan'\t"
+#else
+            "%b='janv.'\t"
+#endif
+            "%B='janvier'\t"
+            "%C='19'\t"
+#if defined(__APPLE__)
+            "%h='jan'\t"
+#else
+            "%h='janv.'\t"
+#endif
+            "%y='70'\t"
+            "%Y='1970'\t"
+            "%EC='19'\t"
+            "%Ey='70'\t"
+            "%EY='1970'\t"
+            "%Oy='70'\t"
+            "\n"),
+        lfmt,
+        std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+
+  check(SV("%b='mai'\t"
+           "%B='mai'\t"
+           "%C='20'\t"
+           "%h='mai'\t"
+           "%y='04'\t"
+           "%Y='2004'\t"
+           "%EC='20'\t"
+           "%Ey='04'\t"
+           "%EY='2004'\t"
+           "%Oy='04'\t"
+           "\n"),
+        lfmt,
+        std::chrono::year_month{std::chrono::year{2004}, std::chrono::May});
+
+  // Use supplied locale (ja_JP)
+  check(loc,
+        SV(
+#if defined(_WIN32)
+            "%b='1'\t"
+#elif defined(_AIX)      // defined(_WIN32)
+            "%b='1月'\t"
+#elif defined(__APPLE__) // defined(_WIN32)
+            "%b=' 1'\t"
+#else                    // defined(_WIN32)
+            "%b=' 1月'\t"
+#endif                   // defined(_WIN32)
+            "%B='1月'\t"
+            "%C='19'\t"
+#if defined(_WIN32)
+            "%h='1'\t"
+#elif defined(_AIX)      // defined(_WIN32)
+            "%h='1月'\t"
+#elif defined(__APPLE__) // defined(_WIN32)
+            "%h=' 1'\t"
+#else                    // defined(_WIN32)
+            "%h=' 1月'\t"
+#endif                   // defined(_WIN32)
+            "%y='70'\t"
+            "%Y='1970'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+            "%EC='19'\t"
+            "%Ey='70'\t"
+            "%EY='1970'\t"
+            "%Oy='70'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+            "%EC='昭和'\t"
+            "%Ey='45'\t"
+            "%EY='昭和45年'\t"
+            "%Oy='七十'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+            "\n"),
+        lfmt,
+        std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+
+  check(loc,
+        SV(
+
+#if defined(_WIN32)
+            "%b='5'\t"
+#elif defined(_AIX)      // defined(_WIN32)
+            "%b='5月'\t"
+#elif defined(__APPLE__) // defined(_WIN32)
+            "%b=' 5'\t"
+#else                    // defined(_WIN32)
+            "%b=' 5月'\t"
+#endif                   // defined(_WIN32)
+            "%B='5月'\t"
+            "%C='20'\t"
+#if defined(_WIN32)
+            "%h='5'\t"
+#elif defined(_AIX)      // defined(_WIN32)
+            "%h='5月'\t"
+#elif defined(__APPLE__) // defined(_WIN32)
+            "%h=' 5'\t"
+#else                    // defined(_WIN32)
+            "%h=' 5月'\t"
+#endif                   // defined(_WIN32)
+            "%y='04'\t"
+            "%Y='2004'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+            "%EC='20'\t"
+            "%Ey='04'\t"
+            "%EY='2004'\t"
+            "%Oy='04'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+            "%EC='平成'\t"
+            "%Ey='16'\t"
+            "%EY='平成16年'\t"
+            "%Oy='四'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+            "\n"),
+        lfmt,
+        std::chrono::year_month{std::chrono::year{2004}, std::chrono::May});
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_invalid_values<CharT>();
+  test_valid_values<CharT>();
+
+  check_invalid_types<CharT>(
+      {SV("b"), SV("B"), SV("C"), SV("EC"), SV("Ey"), SV("EY"), SV("h"), SV("m"), SV("Om"), SV("Oy"), SV("y"), SV("Y")},
+      std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:A"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+  check_exception("The chrono-specs contains a '{'",
+                  SV("{:%%{"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+  check_exception("End of input while parsing the modifier chrono conversion-spec",
+                  SV("{:%"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+  check_exception("End of input while parsing the modifier E",
+                  SV("{:%E"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+  check_exception("End of input while parsing the modifier O",
+                  SV("{:%O"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:.3}"),
+                  std::chrono::year_month{std::chrono::year{1970}, std::chrono::January});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_day.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_day.pass.cpp
new file mode 100644
index 0000000..25d5a58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_day.pass.cpp
@@ -0,0 +1,1082 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Investigate Windows issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::year_month_day, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid year, valid month, valid day
+  check(SV("1970-01-31"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{31}});
+  check(SV("*1970-01-31*"),
+        SV("{:*^12}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{31}});
+  check(SV("*1970-01-31"),
+        SV("{:*>11}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{31}});
+
+  // Valid year, valid month, invalid day
+  check(SV("1970-02-31 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{31}});
+  check(SV("*1970-02-31 is not a valid date*"),
+        SV("{:*^32}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{31}});
+  check(SV("*1970-02-31 is not a valid date"),
+        SV("{:*>31}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{31}});
+
+  // Valid year, invalid month, valid day
+  check(SV("1970-00-31 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check(SV("*1970-00-31 is not a valid date*"),
+        SV("{:*^32}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check(SV("*1970-00-31 is not a valid date"),
+        SV("{:*>31}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+
+  // Valid year, invalid month, invalid day
+  check(SV("1970-00-32 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{32}});
+  check(SV("*1970-00-32 is not a valid date*"),
+        SV("{:*^32}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{32}});
+  check(SV("*1970-00-32 is not a valid date"),
+        SV("{:*>31}"),
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{32}});
+
+  // Invalid year, valid month, valid day
+  check(SV("-32768-01-31 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+  check(SV("*-32768-01-31 is not a valid date*"),
+        SV("{:*^34}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+  check(SV("*-32768-01-31 is not a valid date"),
+        SV("{:*>33}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  // Invalid year, valid month, invalid day
+  check(SV("-32768-01-32 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{32}});
+  check(SV("*-32768-01-32 is not a valid date*"),
+        SV("{:*^34}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{32}});
+  check(SV("*-32768-01-32 is not a valid date"),
+        SV("{:*>33}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{32}});
+
+  // Invalid year, invalid month, valid day
+  check(SV("-32768-00-31 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::day{31}});
+  check(SV("*-32768-00-31 is not a valid date*"),
+        SV("{:*^34}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::day{31}});
+  check(SV("*-32768-00-31 is not a valid date"),
+        SV("{:*>33}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::day{31}});
+
+  // Invalid year, invalid month, invalid day
+  check(SV("-32768-00-32 is not a valid date"),
+        SV("{}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::day{32}});
+  check(SV("*-32768-00-32 is not a valid date*"),
+        SV("{:*^34}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::day{32}});
+  check(SV("*-32768-00-32 is not a valid date"),
+        SV("{:*>33}"),
+        std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::day{32}});
+}
+
+// TODO FMT Should x throw?
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a, %A, %b, %B, %h, %j, %u, %U, %V, %w, %W, %Ou, %OU, %OV, %Ow, and %OW throw an exception.
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%A}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a weekday name needs a valid weekday",
+                  SV("{:%a}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{13}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%B}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{255}, std::chrono::day{31}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{200}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{13}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%b}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{255}, std::chrono::day{31}});
+
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{13}, std::chrono::day{31}});
+  check_exception("formatting a month name from an invalid month number",
+                  SV("{:%h}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{255}, std::chrono::day{31}});
+
+  check_exception("formatting a day of year needs a valid date",
+                  SV("{:%j}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a day of year needs a valid date",
+                  SV("{:%j}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a day of year needs a valid date",
+                  SV("{:%j}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a day of year needs a valid date",
+                  SV("{:%j}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a day of year needs a valid date",
+                  SV("{:%j}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%u}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%u}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%u}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%u}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%u}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%U}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%U}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%U}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%U}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%U}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%V}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%V}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%V}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%V}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%V}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%w}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%w}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%w}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%w}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%w}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%W}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%W}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%W}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%W}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%W}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ou}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ou}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ou}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ou}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ou}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OU}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OU}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OU}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OU}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OU}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OV}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OV}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OV}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OV}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OV}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ow}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ow}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ow}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ow}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a weekday needs a valid weekday",
+                  SV("{:%Ow}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OW}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{0}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OW}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{1}, std::chrono::day{32}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OW}"),
+                  std::chrono::year_month_day{
+                      std::chrono::year{1970}, std::chrono::month{2}, std::chrono::day{29}}); // not a leap year
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OW}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::month{0}, std::chrono::day{31}});
+  check_exception("formatting a week of year needs a valid date",
+                  SV("{:%OW}"),
+                  std::chrono::year_month_day{std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::day{31}});
+}
+
+template <class CharT>
+static void test_valid_md_values() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+#if defined(_AIX)
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\t%d='55'\t%e='55'\t%Od='55'\t%Oe='55'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#else  //  defined(_AIX)
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        fmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#endif //  defined(_AIX)
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#else    // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(
+#  if defined(_WIN32) || defined(_AIX)
+      SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+#  else  // defined(_WIN32) || defined(_AIX)
+      SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+#  endif // defined(_WIN32) || defined(_AIX)
+      lfmt,
+      std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+#  if defined(_AIX)
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\t%d='55'\t%e='55'\t%Od='55'\t%Oe='55'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#  else  //   defined(_AIX)
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#  endif //   defined(_AIX)
+#endif   // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#if defined(_WIN32)
+  check(loc,
+        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='〇'\t%Oe='〇'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='一'\t%Oe='一'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='九'\t%Oe='九'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='十'\t%Oe='十'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='二十八'\t%Oe='二十八'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='二十九'\t%Oe='二十九'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='三十二'\t%Oe='三十二'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='九十九'\t%Oe='九十九'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#elif defined(_AIX)      // defined(_WIN32)
+  check(loc,
+        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\t%d='55'\t%e='55'\t%Od='55'\t%Oe='55'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\t%d='00'\t%e=' 0'\t%Od='00'\t%Oe=' 0'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\t%d='09'\t%e=' 9'\t%Od='09'\t%Oe=' 9'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\t%d='10'\t%e='10'\t%Od='10'\t%Oe='10'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\t%d='29'\t%e='29'\t%Od='29'\t%Oe='29'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\t%d='32'\t%e='32'\t%Od='32'\t%Oe='32'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\t%d='99'\t%e='99'\t%Od='99'\t%Oe='99'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#else                    // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\t%d='00'\t%e=' 0'\t%Od='〇'\t%Oe='〇'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{0}});
+  check(loc,
+        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\t%d='01'\t%e=' 1'\t%Od='一'\t%Oe='一'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::February, std::chrono::day{1}});
+  check(loc,
+        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\t%d='09'\t%e=' 9'\t%Od='九'\t%Oe='九'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::March, std::chrono::day{9}});
+  check(loc,
+        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\t%d='10'\t%e='10'\t%Od='十'\t%Oe='十'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::April, std::chrono::day{10}});
+  check(loc,
+        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\t%d='28'\t%e='28'\t%Od='二十八'\t%Oe='二十八'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::May, std::chrono::day{28}});
+  check(loc,
+        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\t%d='29'\t%e='29'\t%Od='二十九'\t%Oe='二十九'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::June, std::chrono::day{29}});
+  check(loc,
+        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::July, std::chrono::day{30}});
+  check(loc,
+        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::August, std::chrono::day{31}});
+  check(loc,
+        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\t%d='32'\t%e='32'\t%Od='三十二'\t%Oe='三十二'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::September, std::chrono::day{32}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\t%d='99'\t%e='99'\t%Od='九十九'\t%Oe='九十九'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::October, std::chrono::day{99}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\t%d='100'\t%e='100'\t%Od='100'\t%Oe='100'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::November, std::chrono::day{100}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\t%d='255'\t%e='255'\t%Od='255'\t%Oe='255'\n"),
+        lfmt,
+        std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::December, std::chrono::day{255}});
+#endif                   //  defined(_WIN32)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_ymd_values() {
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%C='%C'%t"
+      "%%D='%D'%t"
+      "%%F='%F'%t"
+      "%%j='%j'%t"
+      "%%g='%g'%t"
+      "%%G='%G'%t"
+      "%%u='%u'%t"
+      "%%U='%U'%t"
+      "%%V='%V'%t"
+      "%%w='%w'%t"
+      "%%W='%W'%t"
+      "%%x='%x'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%Ex='%Ex'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Ou='%Ou'%t"
+      "%%OU='%OU'%t"
+      "%%OV='%OV'%t"
+      "%%Ow='%Ow'%t"
+      "%%OW='%OW'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%C='%C'%t"
+      "%%D='%D'%t"
+      "%%F='%F'%t"
+      "%%j='%j'%t"
+      "%%g='%g'%t"
+      "%%G='%G'%t"
+      "%%u='%u'%t"
+      "%%U='%U'%t"
+      "%%V='%V'%t"
+      "%%w='%w'%t"
+      "%%W='%W'%t"
+      "%%x='%x'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%Ex='%Ex'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Ou='%Ou'%t"
+      "%%OU='%OU'%t"
+      "%%OV='%OV'%t"
+      "%%Ow='%Ow'%t"
+      "%%OW='%OW'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(
+      SV("%C='19'\t"
+         "%D='01/01/70'\t"
+         "%F='1970-01-01'\t"
+         "%j='001'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='4'\t"
+         "%U='00'\t"
+         "%V='01'\t"
+         "%w='4'\t"
+         "%W='00'\t"
+         "%x='01/01/70'\t"
+         "%y='70'\t"
+         "%Y='1970'\t"
+         "%Ex='01/01/70'\t"
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='4'\t"
+         "%OU='00'\t"
+         "%OV='01'\t"
+         "%Ow='4'\t"
+         "%OW='00'\t"
+         "%Oy='70'\t"
+         "\n"),
+      fmt,
+      std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{1}});
+
+  check(
+      SV("%C='20'\t"
+         "%D='05/29/04'\t"
+         "%F='2004-05-29'\t"
+         "%j='150'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='6'\t"
+         "%U='21'\t"
+         "%V='22'\t"
+         "%w='6'\t"
+         "%W='21'\t"
+         "%x='05/29/04'\t"
+         "%y='04'\t"
+         "%Y='2004'\t"
+         "%Ex='05/29/04'\t"
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='6'\t"
+         "%OU='21'\t"
+         "%OV='22'\t"
+         "%Ow='6'\t"
+         "%OW='21'\t"
+         "%Oy='04'\t"
+         "\n"),
+      fmt,
+      std::chrono::year_month_day{std::chrono::year{2004}, std::chrono::May, std::chrono::day{29}});
+
+  // Use the global locale (fr_FR)
+  check(
+      SV("%C='19'\t"
+         "%D='01/01/70'\t"
+         "%F='1970-01-01'\t"
+         "%j='001'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='4'\t"
+         "%U='00'\t"
+         "%V='01'\t"
+         "%w='4'\t"
+         "%W='00'\t"
+#if defined(__APPLE__)
+         "%x='01.01.1970'\t"
+#else
+         "%x='01/01/1970'\t"
+#endif
+         "%y='70'\t"
+         "%Y='1970'\t"
+#if defined(__APPLE__)
+         "%Ex='01.01.1970'\t"
+#else
+         "%Ex='01/01/1970'\t"
+#endif
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='4'\t"
+         "%OU='00'\t"
+         "%OV='01'\t"
+         "%Ow='4'\t"
+         "%OW='00'\t"
+         "%Oy='70'\t"
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{1}});
+
+  check(
+      SV("%C='20'\t"
+         "%D='05/29/04'\t"
+         "%F='2004-05-29'\t"
+         "%j='150'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='6'\t"
+         "%U='21'\t"
+         "%V='22'\t"
+         "%w='6'\t"
+         "%W='21'\t"
+#if defined(__APPLE__)
+         "%x='29.05.2004'\t"
+#else
+         "%x='29/05/2004'\t"
+#endif
+         "%y='04'\t"
+         "%Y='2004'\t"
+#if defined(__APPLE__)
+         "%Ex='29.05.2004'\t"
+#else
+         "%Ex='29/05/2004'\t"
+#endif
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='6'\t"
+         "%OU='21'\t"
+         "%OV='22'\t"
+         "%Ow='6'\t"
+         "%OW='21'\t"
+         "%Oy='04'\t"
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day{std::chrono::year{2004}, std::chrono::May, std::chrono::day{29}});
+
+  // Use supplied locale (ja_JP)
+  check(
+      loc,
+      SV("%C='19'\t"
+         "%D='01/01/70'\t"
+         "%F='1970-01-01'\t"
+         "%j='001'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='4'\t"
+         "%U='00'\t"
+         "%V='01'\t"
+         "%w='4'\t"
+         "%W='00'\t"
+#if defined(__APPLE__) || defined(_AIX)
+         "%x='1970/01/01'\t"
+#else  // defined(__APPLE__) || defined(_AIX)
+         "%x='1970年01月01日'\t"
+#endif // defined(__APPLE__) || defined(_AIX)
+         "%y='70'\t"
+         "%Y='1970'\t"
+#if defined(__APPLE__) || defined(_AIX)
+         "%Ex='1970/01/01'\t"
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='4'\t"
+         "%OU='00'\t"
+         "%OV='01'\t"
+         "%Ow='4'\t"
+         "%OW='00'\t"
+         "%Oy='70'\t"
+#else  // defined(__APPLE__) || defined(_AIX)
+         "%Ex='昭和45年01月01日'\t"
+         "%EC='昭和'\t"
+         "%Ey='45'\t"
+         "%EY='昭和45年'\t"
+         "%Ou='四'\t"
+         "%OU='〇'\t"
+         "%OV='一'\t"
+         "%Ow='四'\t"
+         "%OW='〇'\t"
+         "%Oy='七十'\t"
+#endif // defined(__APPLE__) || defined(_AIX)
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{1}});
+
+  check(
+      loc,
+      SV("%C='20'\t"
+         "%D='05/29/04'\t"
+         "%F='2004-05-29'\t"
+         "%j='150'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='6'\t"
+         "%U='21'\t"
+         "%V='22'\t"
+         "%w='6'\t"
+         "%W='21'\t"
+#if defined(__APPLE__) || defined(_AIX)
+         "%x='2004/05/29'\t"
+#else  // defined(__APPLE__) || defined(_AIX)
+         "%x='2004年05月29日'\t"
+#endif // defined(__APPLE__) || defined(_AIX)
+         "%y='04'\t"
+         "%Y='2004'\t"
+#if defined(__APPLE__) || defined(_AIX)
+         "%Ex='2004/05/29'\t"
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='6'\t"
+         "%OU='21'\t"
+         "%OV='22'\t"
+         "%Ow='6'\t"
+         "%OW='21'\t"
+         "%Oy='04'\t"
+#else  // defined(__APPLE__) || defined(_AIX)
+         "%Ex='平成16年05月29日'\t"
+         "%EC='平成'\t"
+         "%Ey='16'\t"
+         "%EY='平成16年'\t"
+         "%Ou='六'\t"
+         "%OU='二十一'\t"
+         "%OV='二十二'\t"
+         "%Ow='六'\t"
+         "%OW='二十一'\t"
+         "%Oy='四'\t"
+#endif // defined(__APPLE__) || defined(_AIX)
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day{std::chrono::year{2004}, std::chrono::May, std::chrono::day{29}});
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_values() {
+  // Fields only using month and day.
+  test_valid_md_values<CharT>();
+  // Fields only using year, month, and day.
+  test_valid_ymd_values<CharT>();
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_invalid_values<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("a"),  SV("A"),  SV("b"),  SV("B"),  SV("C"),  SV("d"),  SV("D"),  SV("e"),  SV("EC"),
+       SV("Ex"), SV("Ey"), SV("EY"), SV("F"),  SV("g"),  SV("G"),  SV("h"),  SV("j"),  SV("m"),
+       SV("Od"), SV("Oe"), SV("Om"), SV("Ou"), SV("OU"), SV("OV"), SV("Ow"), SV("OW"), SV("Oy"),
+       SV("u"),  SV("U"),  SV("V"),  SV("w"),  SV("W"),  SV("x"),  SV("y"),  SV("Y")},
+      std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:A"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+  check_exception("The chrono-specs contains a '{'",
+                  SV("{:%%{"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+  check_exception("End of input while parsing the modifier chrono conversion-spec",
+                  SV("{:%"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+  check_exception("End of input while parsing the modifier E",
+                  SV("{:%E"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+  check_exception("End of input while parsing the modifier O",
+                  SV("{:%O"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+
+  // Precision not allowed
+  check_exception("Expected '%' or '}' in the chrono format-string",
+                  SV("{:.3}"),
+                  std::chrono::year_month_day{std::chrono::year{1970}, std::chrono::January, std::chrono::day{31}});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_day_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_day_last.pass.cpp
new file mode 100644
index 0000000..35ce599
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_day_last.pass.cpp
@@ -0,0 +1,934 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::year_month_day_last, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid year, valid month
+  check(SV("1970/Jan/last"),
+        SV("{}"),
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{1}}});
+  check(SV("*1970/Jan/last*"),
+        SV("{:*^15}"),
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{1}}});
+  check(SV("*1970/Jan/last"),
+        SV("{:*>14}"),
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  // Valid year, invalid month
+  check(SV("1970/0 is not a valid month/last"),
+        SV("{}"),
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check(SV("*1970/0 is not a valid month/last*"),
+        SV("{:*^34}"),
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check(SV("*1970/0 is not a valid month/last"),
+        SV("{:*>33}"),
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+
+  // Invalid year, valid month
+  check(
+      SV("-32768 is not a valid year/Jan/last"),
+      SV("{}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+  check(
+      SV("*-32768 is not a valid year/Jan/last*"),
+      SV("{:*^37}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+  check(
+      SV("*-32768 is not a valid year/Jan/last"),
+      SV("{:*>36}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  // Invalid year, invalid month
+  check(
+      SV("-32768 is not a valid year/0 is not a valid month/last"),
+      SV("{}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check(
+      SV("*-32768 is not a valid year/0 is not a valid month/last*"),
+      SV("{:*^56}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check(
+      SV("*-32768 is not a valid year/0 is not a valid month/last"),
+      SV("{:*>55}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{0}}});
+}
+
+// TODO FMT Should x throw?
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a, %A, %b, %B, %h, %j, %u, %U, %V, %w, %W, %Ou, %OU, %OV, %Ow, and %OW throw an exception.
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%A}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%A}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%a}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%a}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{13}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{255}}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{200}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{13}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{255}}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{13}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{255}}});
+
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%u}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%u}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%U}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%U}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%V}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%V}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%w}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%w}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%W}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%W}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%Ou}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%Ou}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%OU}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%OU}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%OV}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%OV}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%Ow}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%Ow}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%OW}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::month{0}}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%OW}"),
+      std::chrono::year_month_day_last{std::chrono::year{-32768}, std::chrono::month_day_last{std::chrono::month{1}}});
+}
+
+template <class CharT>
+static void test_valid_md_values() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(SV("%b='Feb'\t%B='February'\t%h='Feb'\t%m='02'\t%Om='02'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(SV("%b='Mar'\t%B='March'\t%h='Mar'\t%m='03'\t%Om='03'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(SV("%b='Apr'\t%B='April'\t%h='Apr'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(SV("%b='May'\t%B='May'\t%h='May'\t%m='05'\t%Om='05'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(SV("%b='Jun'\t%B='June'\t%h='Jun'\t%m='06'\t%Om='06'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(SV("%b='Jul'\t%B='July'\t%h='Jul'\t%m='07'\t%Om='07'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(SV("%b='Aug'\t%B='August'\t%h='Aug'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(SV("%b='Sep'\t%B='September'\t%h='Sep'\t%m='09'\t%Om='09'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(SV("%b='Oct'\t%B='October'\t%h='Oct'\t%m='10'\t%Om='10'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(SV("%b='Nov'\t%B='November'\t%h='Nov'\t%m='11'\t%Om='11'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        fmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(SV("%b='fév'\t%B='février'\t%h='fév'\t%m='02'\t%Om='02'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(SV("%b='mar'\t%B='mars'\t%h='mar'\t%m='03'\t%Om='03'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(SV("%b='avr'\t%B='avril'\t%h='avr'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(SV("%b='jui'\t%B='juin'\t%h='jui'\t%m='06'\t%Om='06'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(SV("%b='jul'\t%B='juillet'\t%h='jul'\t%m='07'\t%Om='07'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(SV("%b='aoû'\t%B='août'\t%h='aoû'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(SV("%b='sep'\t%B='septembre'\t%h='sep'\t%m='09'\t%Om='09'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(SV("%b='oct'\t%B='octobre'\t%h='oct'\t%m='10'\t%Om='10'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(SV("%b='nov'\t%B='novembre'\t%h='nov'\t%m='11'\t%Om='11'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+#else    // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(SV("%b='févr.'\t%B='février'\t%h='févr.'\t%m='02'\t%Om='02'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(SV("%b='mars'\t%B='mars'\t%h='mars'\t%m='03'\t%Om='03'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(
+#  if defined(_WIN32) || defined(_AIX)
+      SV("%b='avr.'\t%B='avril'\t%h='avr.'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+#  else  // defined(_WIN32) || defined(_AIX)
+      SV("%b='avril'\t%B='avril'\t%h='avril'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+#  endif // defined(_WIN32) || defined(_AIX)
+      lfmt,
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(SV("%b='mai'\t%B='mai'\t%h='mai'\t%m='05'\t%Om='05'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(SV("%b='juin'\t%B='juin'\t%h='juin'\t%m='06'\t%Om='06'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(SV("%b='juil.'\t%B='juillet'\t%h='juil.'\t%m='07'\t%Om='07'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(SV("%b='août'\t%B='août'\t%h='août'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(SV("%b='sept.'\t%B='septembre'\t%h='sept.'\t%m='09'\t%Om='09'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(SV("%b='oct.'\t%B='octobre'\t%h='oct.'\t%m='10'\t%Om='10'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(SV("%b='nov.'\t%B='novembre'\t%h='nov.'\t%m='11'\t%Om='11'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+#endif   // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#if defined(_WIN32)
+  check(loc,
+        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(loc,
+        SV("%b='2'\t%B='2月'\t%h='2'\t%m='02'\t%Om='02'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(loc,
+        SV("%b='3'\t%B='3月'\t%h='3'\t%m='03'\t%Om='03'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(loc,
+        SV("%b='4'\t%B='4月'\t%h='4'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(loc,
+        SV("%b='5'\t%B='5月'\t%h='5'\t%m='05'\t%Om='05'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(loc,
+        SV("%b='6'\t%B='6月'\t%h='6'\t%m='06'\t%Om='06'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(loc,
+        SV("%b='7'\t%B='7月'\t%h='7'\t%m='07'\t%Om='07'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(loc,
+        SV("%b='8'\t%B='8月'\t%h='8'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(loc,
+        SV("%b='9'\t%B='9月'\t%h='9'\t%m='09'\t%Om='09'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+#elif defined(_AIX)      // defined(_WIN32)
+  check(loc,
+        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(loc,
+        SV("%b='2月'\t%B='2月'\t%h='2月'\t%m='02'\t%Om='02'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(loc,
+        SV("%b='3月'\t%B='3月'\t%h='3月'\t%m='03'\t%Om='03'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(loc,
+        SV("%b='4月'\t%B='4月'\t%h='4月'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(loc,
+        SV("%b='5月'\t%B='5月'\t%h='5月'\t%m='05'\t%Om='05'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(loc,
+        SV("%b='6月'\t%B='6月'\t%h='6月'\t%m='06'\t%Om='06'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(loc,
+        SV("%b='7月'\t%B='7月'\t%h='7月'\t%m='07'\t%Om='07'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(loc,
+        SV("%b='8月'\t%B='8月'\t%h='8月'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(loc,
+        SV("%b='9月'\t%B='9月'\t%h='9月'\t%m='09'\t%Om='09'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='10'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='11'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(loc,
+        SV("%b=' 2'\t%B='2月'\t%h=' 2'\t%m='02'\t%Om='02'\t%d='28'\t%e='28'\t%Od='28'\t%Oe='28'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(loc,
+        SV("%b=' 3'\t%B='3月'\t%h=' 3'\t%m='03'\t%Om='03'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(loc,
+        SV("%b=' 4'\t%B='4月'\t%h=' 4'\t%m='04'\t%Om='04'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(loc,
+        SV("%b=' 5'\t%B='5月'\t%h=' 5'\t%m='05'\t%Om='05'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(loc,
+        SV("%b=' 6'\t%B='6月'\t%h=' 6'\t%m='06'\t%Om='06'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(loc,
+        SV("%b=' 7'\t%B='7月'\t%h=' 7'\t%m='07'\t%Om='07'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(loc,
+        SV("%b=' 8'\t%B='8月'\t%h=' 8'\t%m='08'\t%Om='08'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(loc,
+        SV("%b=' 9'\t%B='9月'\t%h=' 9'\t%m='09'\t%Om='09'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(loc,
+        SV("%b='10'\t%B='10月'\t%h='10'\t%m='10'\t%Om='10'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(loc,
+        SV("%b='11'\t%B='11月'\t%h='11'\t%m='11'\t%Om='11'\t%d='30'\t%e='30'\t%Od='30'\t%Oe='30'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='31'\t%e='31'\t%Od='31'\t%Oe='31'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+#else                    // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check(loc,
+        SV("%b=' 2月'\t%B='2月'\t%h=' 2月'\t%m='02'\t%Om='二'\t%d='28'\t%e='28'\t%Od='二十八'\t%Oe='二十八'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::February}});
+  check(loc,
+        SV("%b=' 3月'\t%B='3月'\t%h=' 3月'\t%m='03'\t%Om='三'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::March}});
+  check(loc,
+        SV("%b=' 4月'\t%B='4月'\t%h=' 4月'\t%m='04'\t%Om='四'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::April}});
+  check(loc,
+        SV("%b=' 5月'\t%B='5月'\t%h=' 5月'\t%m='05'\t%Om='五'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::May}});
+  check(loc,
+        SV("%b=' 6月'\t%B='6月'\t%h=' 6月'\t%m='06'\t%Om='六'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::June}});
+  check(loc,
+        SV("%b=' 7月'\t%B='7月'\t%h=' 7月'\t%m='07'\t%Om='七'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::July}});
+  check(loc,
+        SV("%b=' 8月'\t%B='8月'\t%h=' 8月'\t%m='08'\t%Om='八'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::August}});
+  check(loc,
+        SV("%b=' 9月'\t%B='9月'\t%h=' 9月'\t%m='09'\t%Om='九'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::September}});
+  check(loc,
+        SV("%b='10月'\t%B='10月'\t%h='10月'\t%m='10'\t%Om='十'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::October}});
+  check(loc,
+        SV("%b='11月'\t%B='11月'\t%h='11月'\t%m='11'\t%Om='十一'\t%d='30'\t%e='30'\t%Od='三十'\t%Oe='三十'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::November}});
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\t%d='31'\t%e='31'\t%Od='三十一'\t%Oe='三十一'\n"),
+        lfmt,
+        std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::December}});
+#endif                   //  defined(_WIN32)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_ymd_values() {
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%C='%C'%t"
+      "%%D='%D'%t"
+      "%%F='%F'%t"
+      "%%j='%j'%t"
+      "%%g='%g'%t"
+      "%%G='%G'%t"
+      "%%u='%u'%t"
+      "%%U='%U'%t"
+      "%%V='%V'%t"
+      "%%w='%w'%t"
+      "%%W='%W'%t"
+      "%%x='%x'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%Ex='%Ex'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Ou='%Ou'%t"
+      "%%OU='%OU'%t"
+      "%%OV='%OV'%t"
+      "%%Ow='%Ow'%t"
+      "%%OW='%OW'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%C='%C'%t"
+      "%%D='%D'%t"
+      "%%F='%F'%t"
+      "%%j='%j'%t"
+      "%%g='%g'%t"
+      "%%G='%G'%t"
+      "%%u='%u'%t"
+      "%%U='%U'%t"
+      "%%V='%V'%t"
+      "%%w='%w'%t"
+      "%%W='%W'%t"
+      "%%x='%x'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%Ex='%Ex'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Ou='%Ou'%t"
+      "%%OU='%OU'%t"
+      "%%OV='%OV'%t"
+      "%%Ow='%Ow'%t"
+      "%%OW='%OW'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(
+      SV("%C='19'\t"
+         "%D='01/31/70'\t"
+         "%F='1970-01-31'\t"
+         "%j='031'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='6'\t"
+         "%U='04'\t"
+         "%V='05'\t"
+         "%w='6'\t"
+         "%W='04'\t"
+         "%x='01/31/70'\t"
+         "%y='70'\t"
+         "%Y='1970'\t"
+         "%Ex='01/31/70'\t"
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='6'\t"
+         "%OU='04'\t"
+         "%OV='05'\t"
+         "%Ow='6'\t"
+         "%OW='04'\t"
+         "%Oy='70'\t"
+         "\n"),
+      fmt,
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+
+  check(
+      SV("%C='20'\t"
+         "%D='05/31/04'\t"
+         "%F='2004-05-31'\t"
+         "%j='152'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='1'\t"
+         "%U='22'\t"
+         "%V='23'\t"
+         "%w='1'\t"
+         "%W='22'\t"
+         "%x='05/31/04'\t"
+         "%y='04'\t"
+         "%Y='2004'\t"
+         "%Ex='05/31/04'\t"
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='1'\t"
+         "%OU='22'\t"
+         "%OV='23'\t"
+         "%Ow='1'\t"
+         "%OW='22'\t"
+         "%Oy='04'\t"
+         "\n"),
+      fmt,
+      std::chrono::year_month_day_last{std::chrono::year{2004}, std::chrono::month_day_last{std::chrono::May}});
+
+  // Use the global locale (fr_FR)
+  check(
+      SV("%C='19'\t"
+         "%D='01/31/70'\t"
+         "%F='1970-01-31'\t"
+         "%j='031'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='6'\t"
+         "%U='04'\t"
+         "%V='05'\t"
+         "%w='6'\t"
+         "%W='04'\t"
+#if defined(__APPLE__)
+         "%x='31.01.1970'\t"
+#else
+         "%x='31/01/1970'\t"
+#endif
+         "%y='70'\t"
+         "%Y='1970'\t"
+#if defined(__APPLE__)
+         "%Ex='31.01.1970'\t"
+#else
+         "%Ex='31/01/1970'\t"
+#endif
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='6'\t"
+         "%OU='04'\t"
+         "%OV='05'\t"
+         "%Ow='6'\t"
+         "%OW='04'\t"
+         "%Oy='70'\t"
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+
+  check(
+      SV("%C='20'\t"
+         "%D='05/31/04'\t"
+         "%F='2004-05-31'\t"
+         "%j='152'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='1'\t"
+         "%U='22'\t"
+         "%V='23'\t"
+         "%w='1'\t"
+         "%W='22'\t"
+#if defined(__APPLE__)
+         "%x='31.05.2004'\t"
+#else
+         "%x='31/05/2004'\t"
+#endif
+         "%y='04'\t"
+         "%Y='2004'\t"
+#if defined(__APPLE__)
+         "%Ex='31.05.2004'\t"
+#else
+         "%Ex='31/05/2004'\t"
+#endif
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='1'\t"
+         "%OU='22'\t"
+         "%OV='23'\t"
+         "%Ow='1'\t"
+         "%OW='22'\t"
+         "%Oy='04'\t"
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day_last{std::chrono::year{2004}, std::chrono::month_day_last{std::chrono::May}});
+
+  // Use supplied locale (ja_JP)
+  check(
+      loc,
+      SV("%C='19'\t"
+         "%D='01/31/70'\t"
+         "%F='1970-01-31'\t"
+         "%j='031'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='6'\t"
+         "%U='04'\t"
+         "%V='05'\t"
+         "%w='6'\t"
+         "%W='04'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='1970/01/31'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='1970年01月31日'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%y='70'\t"
+         "%Y='1970'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='1970/01/31'\t"
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='6'\t"
+         "%OU='04'\t"
+         "%OV='05'\t"
+         "%Ow='6'\t"
+         "%OW='04'\t"
+         "%Oy='70'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='昭和45年01月31日'\t"
+         "%EC='昭和'\t"
+         "%Ey='45'\t"
+         "%EY='昭和45年'\t"
+         "%Ou='六'\t"
+         "%OU='四'\t"
+         "%OV='五'\t"
+         "%Ow='六'\t"
+         "%OW='四'\t"
+         "%Oy='七十'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+
+  check(
+      loc,
+      SV("%C='20'\t"
+         "%D='05/31/04'\t"
+         "%F='2004-05-31'\t"
+         "%j='152'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='1'\t"
+         "%U='22'\t"
+         "%V='23'\t"
+         "%w='1'\t"
+         "%W='22'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='2004/05/31'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='2004年05月31日'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%y='04'\t"
+         "%Y='2004'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='2004/05/31'\t"
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='1'\t"
+         "%OU='22'\t"
+         "%OV='23'\t"
+         "%Ow='1'\t"
+         "%OW='22'\t"
+         "%Oy='04'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='平成16年05月31日'\t"
+         "%EC='平成'\t"
+         "%Ey='16'\t"
+         "%EY='平成16年'\t"
+         "%Ou='一'\t"
+         "%OU='二十二'\t"
+         "%OV='二十三'\t"
+         "%Ow='一'\t"
+         "%OW='二十二'\t"
+         "%Oy='四'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "\n"),
+      lfmt,
+      std::chrono::year_month_day_last{std::chrono::year{2004}, std::chrono::month_day_last{std::chrono::May}});
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_values() {
+  // Fields only using month and day.
+  test_valid_md_values<CharT>();
+  // Fields only using year, month, and day.
+  test_valid_ymd_values<CharT>();
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_invalid_values<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("a"),  SV("A"),  SV("b"),  SV("B"),  SV("C"),  SV("d"),  SV("D"),  SV("e"),  SV("EC"),
+       SV("Ex"), SV("Ey"), SV("EY"), SV("F"),  SV("g"),  SV("G"),  SV("h"),  SV("j"),  SV("m"),
+       SV("Od"), SV("Oe"), SV("Om"), SV("Ou"), SV("OU"), SV("OV"), SV("Ow"), SV("OW"), SV("Oy"),
+       SV("u"),  SV("U"),  SV("V"),  SV("w"),  SV("W"),  SV("x"),  SV("y"),  SV("Y")},
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string",
+      SV("{:A"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check_exception(
+      "The chrono-specs contains a '{'",
+      SV("{:%%{"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check_exception(
+      "End of input while parsing the modifier chrono conversion-spec",
+      SV("{:%"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check_exception(
+      "End of input while parsing the modifier E",
+      SV("{:%E"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+  check_exception(
+      "End of input while parsing the modifier O",
+      SV("{:%O"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+
+  // Precision not allowed
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string",
+      SV("{:.3}"),
+      std::chrono::year_month_day_last{std::chrono::year{1970}, std::chrono::month_day_last{std::chrono::January}});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_weekday.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_weekday.pass.cpp
new file mode 100644
index 0000000..617f183
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_weekday.pass.cpp
@@ -0,0 +1,737 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// XFAIL: LIBCXX-FREEBSD-FIXME
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::year_month_weekday, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid year, valid month, valid day, valid index
+  check(SV("1970/Jan/Mon[1]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(SV("*1970/Jan/Mon[1]"),
+        SV("{:*>16}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check(SV("*1970/Jan/Mon[1]*"),
+        SV("{:*^17}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  // Valid year, valid month, valid day, invalid index
+  check(SV("1970/Jan/Mon[7 is not a valid index]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+
+  // Valid year, valid month, invalid day, valid index
+  check(SV("1970/Jan/13 is not a valid weekday[1]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  // Valid year, valid month, invalid day, invalid index
+  check(SV("1970/Jan/13 is not a valid weekday[7 is not a valid index]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 7}});
+
+  // Valid year, invalid month, valid day, invalid index
+  check(SV("1970/0 is not a valid month/Mon[7 is not a valid index]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+
+  // Valid year, invalid month, invalid day, valid index
+  check(SV("1970/0 is not a valid month/13 is not a valid weekday[1]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  // Valid year, invalid month, invalid day, invalid index
+  check(SV("1970/0 is not a valid month/13 is not a valid weekday[7 is not a valid index]"),
+        SV("{}"),
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 7}});
+
+  // Invalid year, valid month, valid day, valid index
+  check(
+      SV("-32768 is not a valid year/Jan/Mon[1]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  // Invalid year, valid month, valid day, invalid index
+  check(
+      SV("-32768 is not a valid year/Jan/Mon[7 is not a valid index]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+
+  // Invalid year, valid month, invalid day, valid index
+  check(
+      SV("-32768 is not a valid year/Jan/13 is not a valid weekday[1]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  // Invalid year, valid month, invalid day, invalid index
+  check(
+      SV("-32768 is not a valid year/Jan/13 is not a valid weekday[7 is not a valid index]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 7}});
+
+  // Invalid year, invalid month, valid day, invalid index
+  check(
+      SV("-32768 is not a valid year/0 is not a valid month/Mon[7 is not a valid index]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+
+  // Invalid year, invalid month, invalid day, valid index
+  check(
+      SV("-32768 is not a valid year/0 is not a valid month/13 is not a valid weekday[1]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  // Invalid year, invalid month, invalid day, invalid index
+  check(
+      SV("-32768 is not a valid year/0 is not a valid month/13 is not a valid weekday[7 is not a valid index]"),
+      SV("{}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 7}});
+}
+
+// TODO FMT Should x throw?
+template <class CharT>
+static void test_invalid_values() {
+  // Test that %a, %A, %b, %B, %h, %j, %u, %U, %V, %w, %W, %Ou, %OU, %OV, %Ow, and %OW throw an exception.
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%a}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%A}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%u}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%U}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%U}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%U}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%U}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%V}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%V}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%V}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%V}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%w}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%W}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 7}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%W}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{13}, 1}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%W}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "formatting a week of year needs a valid date",
+      SV("{:%W}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+}
+
+template <class CharT>
+static void test_valid_md_values() {
+  constexpr std::basic_string_view<CharT> fmt =
+      SV("{:%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+  constexpr std::basic_string_view<CharT> lfmt =
+      SV("{:L%%b='%b'%t%%B='%B'%t%%h='%h'%t%%m='%m'%t%%Om='%Om'%t%%d='%d'%t%%e='%e'%t%%Od='%Od'%t%%Oe='%Oe'%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+
+  check(SV("%b='Jan'\t%B='January'\t%h='Jan'\t%m='01'\t%Om='01'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        fmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(SV("%b='Dec'\t%B='December'\t%h='Dec'\t%m='12'\t%Om='12'\t%d='20'\t%e='20'\t%Od='20'\t%Oe='20'\n"),
+        fmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+  // Use the global locale (fr_FR)
+#if defined(__APPLE__)
+  check(SV("%b='jan'\t%B='janvier'\t%h='jan'\t%m='01'\t%Om='01'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(SV("%b='déc'\t%B='décembre'\t%h='déc'\t%m='12'\t%Om='12'\t%d='20'\t%e='20'\t%Od='20'\t%Oe='20'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+#else  // defined(__APPLE__)
+  check(SV("%b='janv.'\t%B='janvier'\t%h='janv.'\t%m='01'\t%Om='01'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+  check(SV("%b='déc.'\t%B='décembre'\t%h='déc.'\t%m='12'\t%Om='12'\t%d='20'\t%e='20'\t%Od='20'\t%Oe='20'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+#endif // defined(__APPLE__)
+
+  // Use supplied locale (ja_JP)
+#if defined(_WIN32)
+  check(loc,
+        SV("%b='1'\t%B='1月'\t%h='1'\t%m='01'\t%Om='01'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='20'\t%e='20'\t%Od='20'\t%Oe='20'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+#elif defined(_AIX)      // defined(_WIN32)
+  check(loc,
+        SV("%b='1月'\t%B='1月'\t%h='1月'\t%m='01'\t%Om='01'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='12'\t%d='20'\t%e='20'\t%Od='20'\t%Oe='20'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+#elif defined(__APPLE__) // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1'\t%B='1月'\t%h=' 1'\t%m='01'\t%Om='01'\t%d='01'\t%e=' 1'\t%Od='01'\t%Oe=' 1'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(loc,
+        SV("%b='12'\t%B='12月'\t%h='12'\t%m='12'\t%Om='12'\t%d='20'\t%e='20'\t%Od='20'\t%Oe='20'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+#else                    // defined(_WIN32)
+  check(loc,
+        SV("%b=' 1月'\t%B='1月'\t%h=' 1月'\t%m='01'\t%Om='一'\t%d='01'\t%e=' 1'\t%Od='一'\t%Oe='一'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(loc,
+        SV("%b='12月'\t%B='12月'\t%h='12月'\t%m='12'\t%Om='十二'\t%d='20'\t%e='20'\t%Od='二十'\t%Oe='二十'\n"),
+        lfmt,
+        std::chrono::year_month_weekday{
+            std::chrono::year{1970}, std::chrono::December, std::chrono::weekday_indexed{std::chrono::weekday{7}, 3}});
+
+#endif                   //  defined(_WIN32)
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_ymd_values() {
+  constexpr std::basic_string_view<CharT> fmt = SV(
+      "{:"
+      "%%C='%C'%t"
+      "%%D='%D'%t"
+      "%%F='%F'%t"
+      "%%j='%j'%t"
+      "%%g='%g'%t"
+      "%%G='%G'%t"
+      "%%u='%u'%t"
+      "%%U='%U'%t"
+      "%%V='%V'%t"
+      "%%w='%w'%t"
+      "%%W='%W'%t"
+      "%%x='%x'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%Ex='%Ex'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Ou='%Ou'%t"
+      "%%OU='%OU'%t"
+      "%%OV='%OV'%t"
+      "%%Ow='%Ow'%t"
+      "%%OW='%OW'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  constexpr std::basic_string_view<CharT> lfmt = SV(
+      "{:L"
+      "%%C='%C'%t"
+      "%%D='%D'%t"
+      "%%F='%F'%t"
+      "%%j='%j'%t"
+      "%%g='%g'%t"
+      "%%G='%G'%t"
+      "%%u='%u'%t"
+      "%%U='%U'%t"
+      "%%V='%V'%t"
+      "%%w='%w'%t"
+      "%%W='%W'%t"
+      "%%x='%x'%t"
+      "%%y='%y'%t"
+      "%%Y='%Y'%t"
+      "%%Ex='%Ex'%t"
+      "%%EC='%EC'%t"
+      "%%Ey='%Ey'%t"
+      "%%EY='%EY'%t"
+      "%%Ou='%Ou'%t"
+      "%%OU='%OU'%t"
+      "%%OV='%OV'%t"
+      "%%Ow='%Ow'%t"
+      "%%OW='%OW'%t"
+      "%%Oy='%Oy'%t"
+      "%n}");
+
+  const std::locale loc(LOCALE_ja_JP_UTF_8);
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+
+  // Non localized output using C-locale
+  check(
+      SV("%C='19'\t"
+         "%D='01/01/70'\t"
+         "%F='1970-01-01'\t"
+         "%j='001'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='4'\t"
+         "%U='00'\t"
+         "%V='01'\t"
+         "%w='4'\t"
+         "%W='00'\t"
+         "%x='01/01/70'\t"
+         "%y='70'\t"
+         "%Y='1970'\t"
+         "%Ex='01/01/70'\t"
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='4'\t"
+         "%OU='00'\t"
+         "%OV='01'\t"
+         "%Ow='4'\t"
+         "%OW='00'\t"
+         "%Oy='70'\t"
+         "\n"),
+      fmt,
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(
+      SV("%C='20'\t"
+         "%D='05/29/04'\t"
+         "%F='2004-05-29'\t"
+         "%j='150'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='6'\t"
+         "%U='21'\t"
+         "%V='22'\t"
+         "%w='6'\t"
+         "%W='21'\t"
+         "%x='05/29/04'\t"
+         "%y='04'\t"
+         "%Y='2004'\t"
+         "%Ex='05/29/04'\t"
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='6'\t"
+         "%OU='21'\t"
+         "%OV='22'\t"
+         "%Ow='6'\t"
+         "%OW='21'\t"
+         "%Oy='04'\t"
+         "\n"),
+      fmt,
+      std::chrono::year_month_weekday{
+          std::chrono::year{2004}, std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{6}, 5}});
+
+  // Use the global locale (fr_FR)
+  check(
+      SV("%C='19'\t"
+         "%D='01/01/70'\t"
+         "%F='1970-01-01'\t"
+         "%j='001'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='4'\t"
+         "%U='00'\t"
+         "%V='01'\t"
+         "%w='4'\t"
+         "%W='00'\t"
+#if defined(__APPLE__)
+         "%x='01.01.1970'\t"
+#else
+         "%x='01/01/1970'\t"
+#endif
+         "%y='70'\t"
+         "%Y='1970'\t"
+#if defined(__APPLE__)
+         "%Ex='01.01.1970'\t"
+#else
+         "%Ex='01/01/1970'\t"
+#endif
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='4'\t"
+         "%OU='00'\t"
+         "%OV='01'\t"
+         "%Ow='4'\t"
+         "%OW='00'\t"
+         "%Oy='70'\t"
+         "\n"),
+      lfmt,
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(
+      SV("%C='20'\t"
+         "%D='05/29/04'\t"
+         "%F='2004-05-29'\t"
+         "%j='150'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='6'\t"
+         "%U='21'\t"
+         "%V='22'\t"
+         "%w='6'\t"
+         "%W='21'\t"
+#if defined(__APPLE__)
+         "%x='29.05.2004'\t"
+#else
+         "%x='29/05/2004'\t"
+#endif
+         "%y='04'\t"
+         "%Y='2004'\t"
+#if defined(__APPLE__)
+         "%Ex='29.05.2004'\t"
+#else
+         "%Ex='29/05/2004'\t"
+#endif
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='6'\t"
+         "%OU='21'\t"
+         "%OV='22'\t"
+         "%Ow='6'\t"
+         "%OW='21'\t"
+         "%Oy='04'\t"
+         "\n"),
+      lfmt,
+      std::chrono::year_month_weekday{
+          std::chrono::year{2004}, std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{6}, 5}});
+
+  // Use supplied locale (ja_JP)
+  check(
+      loc,
+      SV("%C='19'\t"
+         "%D='01/01/70'\t"
+         "%F='1970-01-01'\t"
+         "%j='001'\t"
+         "%g='70'\t"
+         "%G='1970'\t"
+         "%u='4'\t"
+         "%U='00'\t"
+         "%V='01'\t"
+         "%w='4'\t"
+         "%W='00'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='1970/01/01'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='1970年01月01日'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%y='70'\t"
+         "%Y='1970'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='1970/01/01'\t"
+         "%EC='19'\t"
+         "%Ey='70'\t"
+         "%EY='1970'\t"
+         "%Ou='4'\t"
+         "%OU='00'\t"
+         "%OV='01'\t"
+         "%Ow='4'\t"
+         "%OW='00'\t"
+         "%Oy='70'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='昭和45年01月01日'\t"
+         "%EC='昭和'\t"
+         "%Ey='45'\t"
+         "%EY='昭和45年'\t"
+         "%Ou='四'\t"
+         "%OU='〇'\t"
+         "%OV='一'\t"
+         "%Ow='四'\t"
+         "%OW='〇'\t"
+         "%Oy='七十'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "\n"),
+      lfmt,
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{4}, 1}});
+
+  check(
+      loc,
+      SV("%C='20'\t"
+         "%D='05/29/04'\t"
+         "%F='2004-05-29'\t"
+         "%j='150'\t"
+         "%g='04'\t"
+         "%G='2004'\t"
+         "%u='6'\t"
+         "%U='21'\t"
+         "%V='22'\t"
+         "%w='6'\t"
+         "%W='21'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='2004/05/29'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%x='2004年05月29日'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%y='04'\t"
+         "%Y='2004'\t"
+#if defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='2004/05/29'\t"
+         "%EC='20'\t"
+         "%Ey='04'\t"
+         "%EY='2004'\t"
+         "%Ou='6'\t"
+         "%OU='21'\t"
+         "%OV='22'\t"
+         "%Ow='6'\t"
+         "%OW='21'\t"
+         "%Oy='04'\t"
+#else  // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "%Ex='平成16年05月29日'\t"
+         "%EC='平成'\t"
+         "%Ey='16'\t"
+         "%EY='平成16年'\t"
+         "%Ou='六'\t"
+         "%OU='二十一'\t"
+         "%OV='二十二'\t"
+         "%Ow='六'\t"
+         "%OW='二十一'\t"
+         "%Oy='四'\t"
+#endif // defined(__APPLE__) || defined(_AIX) || defined(_WIN32)
+         "\n"),
+      lfmt,
+      std::chrono::year_month_weekday{
+          std::chrono::year{2004}, std::chrono::May, std::chrono::weekday_indexed{std::chrono::weekday{6}, 5}});
+
+  std::locale::global(std::locale::classic());
+}
+
+template <class CharT>
+static void test_valid_values() {
+  // Fields only using month and day.
+  test_valid_md_values<CharT>();
+  // Fields only using year, month, and day.
+  test_valid_ymd_values<CharT>();
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_invalid_values<CharT>();
+  test_valid_values<CharT>();
+  check_invalid_types<CharT>(
+      {SV("a"),  SV("A"),  SV("b"),  SV("B"),  SV("C"),  SV("d"),  SV("D"),  SV("e"),  SV("EC"),
+       SV("Ex"), SV("Ey"), SV("EY"), SV("F"),  SV("g"),  SV("G"),  SV("h"),  SV("j"),  SV("m"),
+       SV("Od"), SV("Oe"), SV("Om"), SV("Ou"), SV("OU"), SV("OV"), SV("Ow"), SV("OW"), SV("Oy"),
+       SV("u"),  SV("U"),  SV("V"),  SV("w"),  SV("W"),  SV("x"),  SV("y"),  SV("Y")},
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string",
+      SV("{:A"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "The chrono-specs contains a '{'",
+      SV("{:%%{"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "End of input while parsing the modifier chrono conversion-spec",
+      SV("{:%"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "End of input while parsing the modifier E",
+      SV("{:%E"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+  check_exception(
+      "End of input while parsing the modifier O",
+      SV("{:%O"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+
+  // Precision not allowed
+  check_exception(
+      "Expected '%' or '}' in the chrono format-string",
+      SV("{:.3}"),
+      std::chrono::year_month_weekday{
+          std::chrono::year{1970}, std::chrono::January, std::chrono::weekday_indexed{std::chrono::weekday{1}, 1}});
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_weekday_last.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_weekday_last.pass.cpp
new file mode 100644
index 0000000..50968a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter.year_month_weekday_last.pass.cpp
@@ -0,0 +1,246 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT It seems GCC uses too much memory in the CI and fails.
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.fr_FR.UTF-8
+// REQUIRES: locale.ja_JP.UTF-8
+
+// <chrono>
+
+// template<class charT> struct formatter<chrono::year_month_weekday_last, charT>;
+
+#include <chrono>
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <locale>
+#include <iostream>
+#include <type_traits>
+
+#include "formatter_tests.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "string_literal.h"
+#include "test_macros.h"
+
+template <class CharT>
+static void test_no_chrono_specs() {
+  // Valid
+  check(SV("1970/Jan/Mon[last]"),
+        SV("{}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("*1970/Jan/Mon[last]*"),
+        SV("{:*^20}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("*1970/Jan/Mon[last]"),
+        SV("{:*>19}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // Invalid
+  check(SV("1970/Jan/8 is not a valid weekday[last]"),
+        SV("{}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check(SV("1970/0 is not a valid month/Mon[last]"),
+        SV("{}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("-32768 is not a valid year/Jan/Mon[last]"),
+        SV("{}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+}
+
+template <class CharT>
+static void test_invalid_values() {
+  // *** Invalid weekday ***
+
+  // Weekday name conversion
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%a}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check_exception(
+      "formatting a weekday name needs a valid weekday",
+      SV("{:%A}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+
+  // Weekday conversion
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%u}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%w}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%Ou}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check_exception(
+      "formatting a weekday needs a valid weekday",
+      SV("{:%Ow}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+
+  // Day of year field
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+
+  // Month name conversion
+  check(SV("Jan"),
+        SV("{:%b}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check(SV("Jan"),
+        SV("{:%h}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+  check(SV("January"),
+        SV("{:%B}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{8}}});
+
+  // *** Invalid month ***
+
+  // Weekday name conversion
+  check(SV("Mon"),
+        SV("{:%a}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("Monday"),
+        SV("{:%A}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  // Weekday conversion
+  check(SV("1"),
+        SV("{:%u}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("1"),
+        SV("{:%w}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("1"),
+        SV("{:%Ou}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("1"),
+        SV("{:%Ow}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // Day of year field
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // Month name conversion
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%b}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%h}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check_exception(
+      "formatting a month name from an invalid month number",
+      SV("{:%B}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{1970}, std::chrono::month{0}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // *** Invalid year ***
+
+  // Weekday name conversion
+  check(SV("Mon"),
+        SV("{:%a}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("Monday"),
+        SV("{:%A}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // Weekday conversion
+  check(SV("1"),
+        SV("{:%u}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("1"),
+        SV("{:%w}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("1"),
+        SV("{:%Ou}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("1"),
+        SV("{:%Ow}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // Day of year field
+  check_exception(
+      "formatting a day of year needs a valid date",
+      SV("{:%j}"),
+      std::chrono::year_month_weekday_last{
+          std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+
+  // Month name conversion
+  check(SV("Jan"),
+        SV("{:%b}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("Jan"),
+        SV("{:%h}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+  check(SV("January"),
+        SV("{:%B}"),
+        std::chrono::year_month_weekday_last{
+            std::chrono::year{-32768}, std::chrono::month{1}, std::chrono::weekday_last{std::chrono::weekday{1}}});
+}
+
+template <class CharT>
+static void test() {
+  test_no_chrono_specs<CharT>();
+  test_invalid_values<CharT>();
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter_tests.h b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter_tests.h
new file mode 100644
index 0000000..115d6cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.syn/formatter_tests.h
@@ -0,0 +1,275 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_TIME_TIME_SYN_FORMATTER_TESTS_H
+#define TEST_STD_TIME_TIME_SYN_FORMATTER_TESTS_H
+
+#include "make_string.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+
+#include <algorithm>
+#include <cassert>
+#include <set>
+#include <string>
+#include <string_view>
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <class CharT>
+using format_context = std::conditional_t<std::same_as<CharT, char>, std::format_context, std::wformat_context>;
+#else
+template <class CharT>
+using format_context = std::format_context;
+#endif
+
+template <class CharT, class... Args>
+void check(std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  if constexpr (std::same_as<CharT, char>)
+    if (out != expected)
+      std::cerr << "\nFormat string   " << fmt.get() << "\nExpected output " << expected << "\nActual output   " << out
+                << '\n';
+  assert(out == expected);
+}
+
+template <class CharT, class... Args>
+void check(const std::locale& loc,
+           std::basic_string_view<CharT> expected,
+           test_format_string<CharT, Args...> fmt,
+           Args&&... args) {
+  std::basic_string<CharT> out = std::format(loc, fmt, std::forward<Args>(args)...);
+  if constexpr (std::same_as<CharT, char>)
+    if (out != expected)
+      std::cerr << "\nFormat string   " << fmt.get() << "\nExpected output " << expected << "\nActual output   " << out
+                << '\n';
+  assert(out == expected);
+}
+
+template <class CharT, class... Args>
+void check_exception([[maybe_unused]] std::string_view what,
+                     [[maybe_unused]] std::basic_string_view<CharT> fmt,
+                     [[maybe_unused]] const Args&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  try {
+    TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<format_context<CharT>>(args...));
+    if constexpr (std::same_as<CharT, char>)
+      std::cerr << "\nFormat string   " << fmt << "\nDidn't throw an exception.\n";
+    assert(false);
+  } catch (const std::format_error& e) {
+#  if defined(_LIBCPP_VERSION)
+    if constexpr (std::same_as<CharT, char>)
+      if (e.what() != what)
+        std::cerr << "\nFormat string   " << fmt << "\nExpected exception " << what << "\nActual exception   "
+                  << e.what() << '\n';
+    assert(e.what() == what);
+#  else
+    (void)what;
+    (void)e;
+#  endif
+    return;
+  }
+  assert(false);
+#endif
+}
+
+template <class CharT, class T>
+void check_invalid_type(const std::set<std::basic_string_view<CharT>>& valid_types,
+                        std::string_view what,
+                        std::basic_string<CharT> type,
+                        const T& arg) {
+  std::basic_string<CharT> fmt{STR("{:%") + type + STR("}")};
+
+  if (valid_types.contains(std::basic_string_view<CharT>{type})) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try {
+#endif
+      TEST_IGNORE_NODISCARD std::vformat(
+          std::basic_string_view<CharT>{fmt}, std::make_format_args<format_context<CharT>>(arg));
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    } catch (const std::format_error& e) {
+      (void)e;
+      if constexpr (std::same_as<CharT, char>)
+        std::cerr << "\nFormat string        " << fmt << "\nUnexpected exception " << e.what() << '\n';
+      assert(false);
+    }
+#endif
+  } else {
+    check_exception(what, std::basic_string_view<CharT>{fmt}, arg);
+  }
+}
+
+template <class CharT, class T>
+void check_invalid_types(const std::set<std::basic_string_view<CharT>>& valid_types, const T& arg) {
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a weekday", STR("a"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a weekday", STR("A"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a month", STR("b"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a month", STR("B"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date and time", STR("c"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("C"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a day", STR("d"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("D"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a day", STR("e"), arg);
+  // E - the modifier is checked separately
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("f"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("F"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("g"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("G"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a month", STR("h"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain an hour", STR("H"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("i"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain an hour", STR("I"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date or duration", STR("j"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("J"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("k"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("K"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("l"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("L"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a month", STR("m"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a minute", STR("M"), arg);
+  // n - valid
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("N"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("o"), arg);
+  // O - the modifier is checked separately
+  check_invalid_type(valid_types, "The supplied date time doesn't contain an hour", STR("p"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("P"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a duration", STR("q"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a duration", STR("Q"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time", STR("r"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time", STR("R"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("s"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a second", STR("S"), arg);
+  // t - valid
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time", STR("T"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a weekday", STR("u"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("U"), arg);
+  check_invalid_type(valid_types, "The date time type specifier is invalid", STR("v"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("V"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a weekday", STR("w"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("W"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("x"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time", STR("X"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("y"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("y"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time zone", STR("z"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time zone", STR("Z"), arg);
+
+  // *** E modifier
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ea"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EA"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Eb"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EB"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date and time", STR("Ec"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("EC"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ed"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("ED"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ee"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EE"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ef"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EF"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Eg"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EG"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Eh"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EH"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ei"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EI"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ej"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EJ"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ek"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EK"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("El"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EL"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Em"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EM"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("En"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EN"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Eo"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EO"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ep"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EP"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Eq"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EQ"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Er"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("ER"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Es"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("ES"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Et"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("ET"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Eu"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EU"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ev"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EV"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("Ew"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EW"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("Ex"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time", STR("EX"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("Ey"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("EY"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time zone", STR("Ez"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("EZ"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier E is invalid", STR("E%"), arg);
+
+  // *** O modifier
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oa"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OA"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Ob"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OB"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oc"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OC"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a day", STR("Od"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OD"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a day", STR("Oe"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OE"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Of"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OF"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Og"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OG"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oh"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain an hour", STR("OH"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oi"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain an hour", STR("OI"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oj"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OJ"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Ok"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OK"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Ol"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OL"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a month", STR("Om"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a minute", STR("OM"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("On"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("ON"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oo"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OO"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Op"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OP"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Oq"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OQ"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Or"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OR"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Os"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a second", STR("OS"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Ot"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OT"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a weekday", STR("Ou"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("OU"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Ov"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("OV"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a weekday", STR("Ow"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a date", STR("OW"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("Ox"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OX"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a year", STR("Oy"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OY"), arg);
+  check_invalid_type(valid_types, "The supplied date time doesn't contain a time zone", STR("Oz"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("OZ"), arg);
+  check_invalid_type(valid_types, "The date time type specifier for modifier O is invalid", STR("O%"), arg);
+}
+
+#endif // TEST_STD_TIME_TIME_SYN_FORMATTER_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/max.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/max.pass.cpp
new file mode 100644
index 0000000..8d244c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/max.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration_values::max  // noexcept after C++17
+
+#include <chrono>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    assert(std::chrono::duration_values<int>::max() ==
+           std::numeric_limits<int>::max());
+    assert(std::chrono::duration_values<double>::max() ==
+           std::numeric_limits<double>::max());
+    assert(std::chrono::duration_values<Rep>::max() ==
+           std::numeric_limits<Rep>::max());
+#if TEST_STD_VER >= 11
+    static_assert(std::chrono::duration_values<int>::max() ==
+           std::numeric_limits<int>::max(), "");
+    static_assert(std::chrono::duration_values<double>::max() ==
+           std::numeric_limits<double>::max(), "");
+    static_assert(std::chrono::duration_values<Rep>::max() ==
+           std::numeric_limits<Rep>::max(), "");
+#endif
+
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<int>::max());
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<double>::max());
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<Rep>::max());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(std::chrono::duration_values<int>::max());
+    ASSERT_NOEXCEPT(std::chrono::duration_values<double>::max());
+    ASSERT_NOEXCEPT(std::chrono::duration_values<Rep>::max());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/min.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/min.pass.cpp
new file mode 100644
index 0000000..4ff03c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/min.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration_values::min  // noexcept after C++17
+
+#include <chrono>
+#include <limits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    assert(std::chrono::duration_values<int>::min() ==
+           std::numeric_limits<int>::lowest());
+    assert(std::chrono::duration_values<double>::min() ==
+           std::numeric_limits<double>::lowest());
+    assert(std::chrono::duration_values<Rep>::min() ==
+           std::numeric_limits<Rep>::lowest());
+#if TEST_STD_VER >= 11
+    static_assert(std::chrono::duration_values<int>::min() ==
+           std::numeric_limits<int>::lowest(), "");
+    static_assert(std::chrono::duration_values<double>::min() ==
+           std::numeric_limits<double>::lowest(), "");
+    static_assert(std::chrono::duration_values<Rep>::min() ==
+           std::numeric_limits<Rep>::lowest(), "");
+#endif
+
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<int>::min());
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<double>::min());
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<Rep>::min());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(std::chrono::duration_values<int>::min());
+    ASSERT_NOEXCEPT(std::chrono::duration_values<double>::min());
+    ASSERT_NOEXCEPT(std::chrono::duration_values<Rep>::min());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/zero.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/zero.pass.cpp
new file mode 100644
index 0000000..d9de07b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.duration_values/zero.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// duration_values::zero  // noexcept after C++17
+
+#include <chrono>
+#include <cassert>
+
+#include "test_macros.h"
+#include "../../rep.h"
+
+int main(int, char**)
+{
+    assert(std::chrono::duration_values<int>::zero() == 0);
+    assert(std::chrono::duration_values<Rep>::zero() == 0);
+#if TEST_STD_VER >= 11
+    static_assert(std::chrono::duration_values<int>::zero() == 0, "");
+    static_assert(std::chrono::duration_values<Rep>::zero() == 0, "");
+#endif
+
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<int>::zero());
+    LIBCPP_ASSERT_NOEXCEPT(std::chrono::duration_values<Rep>::zero());
+#if TEST_STD_VER > 17
+    ASSERT_NOEXCEPT(std::chrono::duration_values<int>::zero());
+    ASSERT_NOEXCEPT(std::chrono::duration_values<Rep>::zero());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.is_fp/treat_as_floating_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.is_fp/treat_as_floating_point.pass.cpp
new file mode 100644
index 0000000..9db3d96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.is_fp/treat_as_floating_point.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// treat_as_floating_point
+
+#include <chrono>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    static_assert((std::is_base_of<std::is_floating_point<T>,
+                                   std::chrono::treat_as_floating_point<T> >::value), "");
+#if TEST_STD_VER > 14
+    static_assert(std::is_floating_point<T>::value ==
+                                  std::chrono::treat_as_floating_point_v<T>, "");
+#endif
+}
+
+struct A {};
+
+int main(int, char**)
+{
+    test<int>();
+    test<unsigned>();
+    test<char>();
+    test<bool>();
+    test<float>();
+    test<double>();
+    test<long double>();
+    test<A>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.specializations/duration.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.specializations/duration.pass.cpp
new file mode 100644
index 0000000..8b1b589
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.specializations/duration.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// template <class Rep1, class Period1, class Rep2, class Period2>
+// struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>
+// {
+//     typedef chrono::duration<typename common_type<Rep1, Rep2>::type, see below }> type;
+// };
+
+#include <chrono>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class D1, class D2, class De>
+void
+test()
+{
+    typedef typename std::common_type<D1, D2>::type Dc;
+    static_assert((std::is_same<Dc, De>::value), "");
+}
+
+int main(int, char**)
+{
+    test<std::chrono::duration<int, std::ratio<1, 100> >,
+         std::chrono::duration<long, std::ratio<1, 1000> >,
+         std::chrono::duration<long, std::ratio<1, 1000> > >();
+    test<std::chrono::duration<long, std::ratio<1, 100> >,
+         std::chrono::duration<int, std::ratio<1, 1000> >,
+         std::chrono::duration<long, std::ratio<1, 1000> > >();
+    test<std::chrono::duration<char, std::ratio<1, 30> >,
+         std::chrono::duration<short, std::ratio<1, 1000> >,
+         std::chrono::duration<int, std::ratio<1, 3000> > >();
+    test<std::chrono::duration<double, std::ratio<21, 1> >,
+         std::chrono::duration<short, std::ratio<15, 1> >,
+         std::chrono::duration<double, std::ratio<3, 1> > >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.specializations/time_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.specializations/time_point.pass.cpp
new file mode 100644
index 0000000..181c3e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/time.traits/time.traits.specializations/time_point.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// template <class Clock, class Duration1, class Duration2>
+// struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>
+// {
+//     typedef chrono::time_point<Clock, typename common_type<Duration1, Duration2>::type> type;
+// };
+
+#include <chrono>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class D1, class D2, class De>
+void
+test()
+{
+    typedef std::chrono::system_clock C;
+    typedef std::chrono::time_point<C, D1> T1;
+    typedef std::chrono::time_point<C, D2> T2;
+    typedef std::chrono::time_point<C, De> Te;
+    typedef typename std::common_type<T1, T2>::type Tc;
+    static_assert((std::is_same<Tc, Te>::value), "");
+}
+
+int main(int, char**)
+{
+    test<std::chrono::duration<int, std::ratio<1, 100> >,
+         std::chrono::duration<long, std::ratio<1, 1000> >,
+         std::chrono::duration<long, std::ratio<1, 1000> > >();
+    test<std::chrono::duration<long, std::ratio<1, 100> >,
+         std::chrono::duration<int, std::ratio<1, 1000> >,
+         std::chrono::duration<long, std::ratio<1, 1000> > >();
+    test<std::chrono::duration<char, std::ratio<1, 30> >,
+         std::chrono::duration<short, std::ratio<1, 1000> >,
+         std::chrono::duration<int, std::ratio<1, 3000> > >();
+    test<std::chrono::duration<double, std::ratio<21, 1> >,
+         std::chrono::duration<short, std::ratio<15, 1> >,
+         std::chrono::duration<double, std::ratio<3, 1> > >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/weeks.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/weeks.pass.cpp
new file mode 100644
index 0000000..6795fd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/weeks.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// using weeks = duration<signed integer type of at least 22 bits, ratio_multiply<ratio<7>, days::period>>;
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::weeks D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 22, "");
+    static_assert(std::is_same_v<Period, std::ratio_multiply<std::ratio<7>, std::chrono::days::period>>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/time/years.pass.cpp b/app/src/main/cpp/libcxx/test/std/time/years.pass.cpp
new file mode 100644
index 0000000..ab8b61b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/time/years.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <chrono>
+
+// using years = duration<signed integer type of at least 17 bits, ratio_multiply<ratio<146097, 400>, days::period>>
+
+#include <chrono>
+#include <limits>
+#include <ratio>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::chrono::years D;
+    typedef D::rep Rep;
+    typedef D::period Period;
+    static_assert(std::is_signed<Rep>::value, "");
+    static_assert(std::is_integral<Rep>::value, "");
+    static_assert(std::numeric_limits<Rep>::digits >= 17, "");
+    static_assert(std::is_same_v<Period, std::ratio_multiply<std::ratio<146097, 400>, std::chrono::days::period>>, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/allocs.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/allocs.pass.cpp
new file mode 100644
index 0000000..2a9d705
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/allocs.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// template <class OuterA2>
+//   scoped_allocator_adaptor(OuterA2&& outerAlloc,
+//                            const InnerAllocs& ...innerAllocs);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A1<int> a3(3);
+        A a(a3);
+        assert(a.outer_allocator() == A1<int>(3));
+        assert(a.inner_allocator() == a);
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+    }
+    A1<int>::copy_called = false;
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a(A1<int>(3));
+        assert(a.outer_allocator() == A1<int>(3));
+        assert(a.inner_allocator() == a);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+    }
+    A1<int>::move_called = false;
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A1<int> a4(4);
+        A a(a4, A2<int>(5));
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(a.outer_allocator() == A1<int>(4));
+        assert(a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>>(A2<int>(5)));
+    }
+    A1<int>::copy_called = false;
+    A1<int>::move_called = false;
+    A2<int>::copy_called = false;
+    A2<int>::move_called = false;
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a(A1<int>(4), A2<int>(5));
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(a.outer_allocator() == A1<int>(4));
+        assert(a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>>(A2<int>(5)));
+    }
+    A1<int>::copy_called = false;
+    A1<int>::move_called = false;
+    A2<int>::copy_called = false;
+    A2<int>::move_called = false;
+    A1<int>::move_called = false;
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A1<int> a4(4);
+        A a(a4, A2<int>(5), A3<int>(6));
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(A3<int>::copy_called == true);
+        assert(A3<int>::move_called == false);
+        assert(a.outer_allocator() == A1<int>(4));
+        assert((a.inner_allocator() ==
+            std::scoped_allocator_adaptor<A2<int>, A3<int>>(A2<int>(5), A3<int>(6))));
+    }
+    A1<int>::copy_called = false;
+    A1<int>::move_called = false;
+    A2<int>::copy_called = false;
+    A2<int>::move_called = false;
+    A3<int>::copy_called = false;
+    A3<int>::move_called = false;
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a(A1<int>(4), A2<int>(5), A3<int>(6));
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(A3<int>::copy_called == true);
+        assert(A3<int>::move_called == false);
+        assert(a.outer_allocator() == A1<int>(4));
+        assert((a.inner_allocator() ==
+            std::scoped_allocator_adaptor<A2<int>, A3<int>>(A2<int>(5), A3<int>(6))));
+    }
+//  Test for LWG2782
+    {
+        static_assert(!std::is_convertible<A1<int>, A2<int>>::value, "");
+        static_assert(!std::is_convertible<
+             std::scoped_allocator_adaptor<A1<int>>,
+             std::scoped_allocator_adaptor<A2<int>>>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/converting_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/converting_copy.pass.cpp
new file mode 100644
index 0000000..3145e44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/converting_copy.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// template <class OuterA2>
+//   scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2,
+//                                                           InnerAllocs...>& other);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<double>> B;
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        B a1(A1<int>(3));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A a2 = a1;
+        assert(A1<int>::copy_called == true);
+        assert(a2 == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<double>, A2<int>> B;
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        B a1(A1<int>(4), A2<int>(5));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A a2 = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A2<int>::copy_called == true);
+        assert(a2 == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<double>, A2<int>, A3<int>> B;
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        B a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A3<int>::copy_called = false;
+        A3<int>::move_called = false;
+        A a2 = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A2<int>::copy_called == true);
+        assert(A3<int>::copy_called == true);
+        assert(a2 == a1);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/converting_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/converting_move.pass.cpp
new file mode 100644
index 0000000..c1af8f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/converting_move.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// template <class OuterA2>
+//   scoped_allocator_adaptor(scoped_allocator_adaptor<OuterA2,
+//                                                     InnerAllocs...>&& other);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<double>> B;
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        B a1(A1<int>(3));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A a2 = std::move(a1);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(a2 == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<double>, A2<int>> B;
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        B a1(A1<int>(4), A2<int>(5));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A a2 = std::move(a1);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == true);
+        assert(a2 == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<double>, A2<int>, A3<int>> B;
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        B a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A3<int>::copy_called = false;
+        A3<int>::move_called = false;
+        A a2 = std::move(a1);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == true);
+        assert(A3<int>::copy_called == false);
+        assert(A3<int>::move_called == true);
+        assert(a2 == a1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/copy.pass.cpp
new file mode 100644
index 0000000..15b5643
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/copy.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// scoped_allocator_adaptor(const scoped_allocator_adaptor& other);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a1(A1<int>(3));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A a2 = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(a2 == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a1(A1<int>(4), A2<int>(5));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A a2 = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(a2 == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A3<int>::copy_called = false;
+        A3<int>::move_called = false;
+        A a2 = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(A3<int>::copy_called == true);
+        assert(A3<int>::move_called == false);
+        assert(a2 == a1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/deduct.pass.cpp
new file mode 100644
index 0000000..2e12721
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/deduct.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <scoped_allocator>
+
+// template<class _OuterAlloc, class... _InnerAllocs>
+//     scoped_allocator_adaptor(_OuterAlloc, _InnerAllocs...)
+//         -> scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs...>;
+
+#include <scoped_allocator>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    // Deduct from (const OuterAlloc&).
+    {
+        typedef A1<int> OuterAlloc;
+        OuterAlloc outer(3);
+        std::scoped_allocator_adaptor a(outer);
+        ASSERT_SAME_TYPE(decltype(a), std::scoped_allocator_adaptor<OuterAlloc>);
+    }
+
+    // Deduct from (OuterAlloc&&).
+    {
+        typedef A1<int> OuterAlloc;
+        std::scoped_allocator_adaptor a(OuterAlloc(3));
+        ASSERT_SAME_TYPE(decltype(a), std::scoped_allocator_adaptor<OuterAlloc>);
+    }
+
+    // Deduct from (const OuterAlloc&, const InnerAlloc&).
+    {
+        typedef A1<int> OuterAlloc;
+        typedef A2<int> InnerAlloc;
+        OuterAlloc outer(3);
+        InnerAlloc inner(4);
+
+        std::scoped_allocator_adaptor a(outer, inner);
+        ASSERT_SAME_TYPE(decltype(a), std::scoped_allocator_adaptor<OuterAlloc, InnerAlloc>);
+    }
+
+    // Deduct from (const OuterAlloc&, const InnerAlloc1&, InnerAlloc2&&).
+    {
+        typedef A1<int> OuterAlloc;
+        typedef A2<int> InnerAlloc1;
+        typedef A2<float> InnerAlloc2;
+        OuterAlloc outer(3);
+        InnerAlloc1 inner(4);
+
+        std::scoped_allocator_adaptor a(outer, inner, InnerAlloc2(5));
+        ASSERT_SAME_TYPE(
+            decltype(a), std::scoped_allocator_adaptor<OuterAlloc, InnerAlloc1, InnerAlloc2>);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/default.pass.cpp
new file mode 100644
index 0000000..e9cca7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.cnstr/default.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// scoped_allocator_adaptor();
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a;
+        assert(a.outer_allocator() == A1<int>());
+        assert(a.inner_allocator() == a);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == false);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a;
+        assert(a.outer_allocator() == A1<int>());
+        assert(a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>>());
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == false);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a;
+        assert(a.outer_allocator() == A1<int>());
+        assert((a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>, A3<int>>()));
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == false);
+        assert(A3<int>::copy_called == false);
+        assert(A3<int>::move_called == false);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size.pass.cpp
new file mode 100644
index 0000000..6bfa2d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// pointer allocate(size_type n);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a;
+        A1<int>::allocate_called = false;
+        assert(a.allocate(10) == (int*)10);
+        assert(A1<int>::allocate_called == true);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a;
+        A1<int>::allocate_called = false;
+        assert(a.allocate(10) == (int*)10);
+        assert(A1<int>::allocate_called == true);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a;
+        A1<int>::allocate_called = false;
+        assert(a.allocate(10) == (int*)10);
+        assert(A1<int>::allocate_called == true);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size.verify.cpp
new file mode 100644
index 0000000..fd4d03e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// pointer allocate(size_type n);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "allocators.h"
+
+int main(int, char**)
+{
+    std::scoped_allocator_adaptor<A1<int>> a;
+    a.allocate(10);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size_hint.pass.cpp
new file mode 100644
index 0000000..15ae008
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size_hint.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// pointer allocate(size_type n, const_void_pointer hint);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a;
+        A1<int>::allocate_called = false;
+        assert(a.allocate(10, (const void*)0) == (int*)10);
+        assert(A1<int>::allocate_called == true);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a;
+        A1<int>::allocate_called = false;
+        assert(a.allocate(10, (const void*)10) == (int*)10);
+        assert(A1<int>::allocate_called == true);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a;
+        A1<int>::allocate_called = false;
+        assert(a.allocate(10, (const void*)20) == (int*)10);
+        assert(A1<int>::allocate_called == true);
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A2<int>> A;
+        A a;
+        A2<int>::allocate_called = false;
+        assert(a.allocate(10, (const void*)0) == (int*)0);
+        assert(A2<int>::allocate_called == true);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A2<int>, A2<int>> A;
+        A a;
+        A2<int>::allocate_called = false;
+        assert(a.allocate(10, (const void*)10) == (int*)10);
+        assert(A2<int>::allocate_called == true);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A2<int>, A2<int>, A3<int>> A;
+        A a;
+        A2<int>::allocate_called = false;
+        assert(a.allocate(10, (const void*)20) == (int*)20);
+        assert(A2<int>::allocate_called == true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size_hint.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size_hint.verify.cpp
new file mode 100644
index 0000000..6e60b6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/allocate_size_hint.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// pointer allocate(size_type n, const_void_pointer hint);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "allocators.h"
+
+int main(int, char**)
+{
+    std::scoped_allocator_adaptor<A1<int>> a;
+    a.allocate(10, (const void*)0); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct.pass.cpp
new file mode 100644
index 0000000..aa74bf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct.pass.cpp
@@ -0,0 +1,213 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// template <class T, class... Args> void construct(T* p, Args&&... args);
+
+#include <scoped_allocator>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+struct B
+{
+    static bool constructed;
+
+    typedef A1<B> allocator_type;
+
+    explicit B(std::allocator_arg_t, const allocator_type& a, int i)
+    {
+        assert(a.id() == 5);
+        assert(i == 6);
+        constructed = true;
+    }
+};
+
+bool B::constructed = false;
+
+struct C
+{
+    static bool constructed;
+
+    typedef std::scoped_allocator_adaptor<A2<C>> allocator_type;
+
+    explicit C(std::allocator_arg_t, const allocator_type& a, int i)
+    {
+        assert(a.id() == 7);
+        assert(i == 8);
+        constructed = true;
+    }
+};
+
+bool C::constructed = false;
+
+struct D
+{
+    static bool constructed;
+
+    typedef std::scoped_allocator_adaptor<A2<D>> allocator_type;
+
+    explicit D(int i, int j, const allocator_type& a)
+    {
+        assert(i == 1);
+        assert(j == 2);
+        assert(a.id() == 3);
+        constructed = true;
+    }
+};
+
+bool D::constructed = false;
+
+struct E
+{
+    static bool constructed;
+
+    typedef std::scoped_allocator_adaptor<A1<E>> allocator_type;
+
+    explicit E(int i, int j, const allocator_type& a)
+    {
+        assert(i == 1);
+        assert(j == 2);
+        assert(a.id() == 50);
+        constructed = true;
+    }
+};
+
+bool E::constructed = false;
+
+struct F
+{
+    static bool constructed;
+
+    typedef std::scoped_allocator_adaptor<A2<F>> allocator_type;
+
+    explicit F(int i, int j)
+    {
+        assert(i == 1);
+        assert(j == 2);
+    }
+
+    explicit F(int i, int j, const allocator_type& a)
+    {
+        assert(i == 1);
+        assert(j == 2);
+        assert(a.id() == 50);
+        constructed = true;
+    }
+};
+
+bool F::constructed = false;
+
+struct G
+{
+    static bool constructed;
+
+    typedef std::scoped_allocator_adaptor<std::allocator<G>> allocator_type;
+
+    G(std::allocator_arg_t, allocator_type&&) { assert(false); }
+    G(const allocator_type&) { constructed = true; }
+};
+
+bool G::constructed = false;
+
+int main(int, char**)
+{
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<std::string>> A;
+        A a;
+        char buf[100];
+        typedef std::string S;
+        S* s = (S*)buf;
+        a.construct(s, 4, 'c');
+        assert(*s == "cccc");
+        s->~S();
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<B>> A;
+        A a(A1<B>(5));
+        char buf[100];
+        typedef B S;
+        S* s = (S*)buf;
+        a.construct(s, 6);
+        assert(S::constructed);
+        s->~S();
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<C>> A;
+        A a(A1<int>(5), A2<C>(7));
+        char buf[100];
+        typedef C S;
+        S* s = (S*)buf;
+        a.construct(s, 8);
+        assert(S::constructed);
+        s->~S();
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<D>> A;
+        A a(A1<int>(5), A2<D>(3));
+        char buf[100];
+        typedef D S;
+        S* s = (S*)buf;
+        a.construct(s, 1, 2);
+        assert(S::constructed);
+        s->~S();
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A3<E>, A2<E>> K;
+        typedef std::scoped_allocator_adaptor<K, A1<E>> A;
+        A a(K(), A1<E>(50));
+        char buf[100];
+        typedef E S;
+        S* s = (S*)buf;
+        A3<E>::constructed = false;
+        a.construct(s, 1, 2);
+        assert(S::constructed);
+        assert(A3<E>::constructed);
+        s->~S();
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A3<F>, A2<F>> K;
+        typedef std::scoped_allocator_adaptor<K, A1<F>> A;
+        A a(K(), A1<F>(50));
+        char buf[100];
+        typedef F S;
+        S* s = (S*)buf;
+        A3<F>::constructed = false;
+        a.construct(s, 1, 2);
+        assert(!S::constructed);
+        assert(A3<F>::constructed);
+        s->~S();
+    }
+
+    // LWG 2586
+    // Test that is_constructible uses an lvalue ref so the correct constructor
+    // is picked.
+    {
+        G::allocator_type sa;
+        G* ptr = sa.allocate(1);
+        sa.construct(ptr);
+        assert(G::constructed);
+        sa.deallocate(ptr, 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair.pass.cpp
new file mode 100644
index 0000000..39623f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OtherAlloc, class ...InnerAlloc>
+//   class scoped_allocator_adaptor
+
+// template <class U1, class U2>
+// void scoped_allocator_adaptor::construct(pair<U1, U2>*)
+
+#include <scoped_allocator>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+
+#include "test_macros.h"
+
+
+void test_no_inner_alloc()
+{
+    using VoidAlloc = CountingAllocator<void>;
+    AllocController P;
+    {
+        using T = UsesAllocatorV1<VoidAlloc, 0>;
+        using U = UsesAllocatorV2<VoidAlloc, 0>;
+        using Pair = std::pair<T, U>;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr);
+        Alloc CA(P);
+        SA A(CA);
+        A.construct(ptr);
+        assert(checkConstruct<>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<>(ptr->second, UA_AllocLast, CA));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&>&&,
+                                 std::tuple<const SA&>&&
+              >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&>&&,
+                                 std::tuple<SA&>&&
+              >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+
+    }
+    P.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc, 0>;
+        using U = NotUsesAllocator<VoidAlloc, 0>;
+        using Pair = std::pair<T, U>;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr);
+        Alloc CA(P);
+        SA A(CA);
+        A.construct(ptr);
+        assert(checkConstruct<>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&>&&,
+                                 std::tuple<>&&
+                   >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&>&&,
+                                 std::tuple<>&&
+                   >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+
+void test_with_inner_alloc()
+{
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV1<VoidAlloc2, 0>;
+        using U = UsesAllocatorV2<VoidAlloc2, 0>;
+        using Pair = std::pair<T, U>;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        A.construct(ptr);
+        assert(checkConstruct<>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<>(ptr->second, UA_AllocLast));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&>&&,
+                                 std::tuple<const SAInner&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&>&&,
+                                 std::tuple<SAInner&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc2, 0>;
+        using U = NotUsesAllocator<VoidAlloc2, 0>;
+        using Pair = std::pair<T, U>;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        A.construct(ptr);
+        assert(checkConstruct<>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&>&&,
+                                 std::tuple<>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&>&&,
+                                 std::tuple<>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+int main(int, char**) {
+    test_no_inner_alloc();
+    test_with_inner_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_const_lvalue_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_const_lvalue_pair.pass.cpp
new file mode 100644
index 0000000..57c3263
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_const_lvalue_pair.pass.cpp
@@ -0,0 +1,189 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OtherAlloc, class ...InnerAlloc>
+//   class scoped_allocator_adaptor
+
+// template <class U1, class U2>
+// void scoped_allocator_adaptor::construct(pair<U1, U2>*, pair<T1, T2>const&)
+
+#include <scoped_allocator>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+
+#include "test_macros.h"
+
+
+void test_no_inner_alloc()
+{
+    using VoidAlloc = CountingAllocator<void>;
+    AllocController P;
+    {
+        using T = UsesAllocatorV1<VoidAlloc, 1>;
+        using U = UsesAllocatorV2<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int&, int const&&>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        const PairIn in(x, std::move(y));
+        A.construct(ptr, in);
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&>(ptr->second, UA_AllocLast, CA));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&>&&,
+                                 std::tuple<int const&, const SA&>&&
+              >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&>&&,
+                                 std::tuple<int const&, SA&>&&
+              >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+
+    }
+    P.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc, 1>;
+        using U = NotUsesAllocator<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int, int const&>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        const PairIn in(x, y);
+        A.construct(ptr, in);
+        assert(checkConstruct<int const&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int const&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int const&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+
+void test_with_inner_alloc()
+{
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV1<VoidAlloc2, 1>;
+        using U = UsesAllocatorV2<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int&, int const&&>;
+        int x = 42;
+        int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        const PairIn in(x, std::move(y));
+        A.construct(ptr, in);
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int const&>(ptr->second, UA_AllocLast));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&>&&,
+                                 std::tuple<int const&, const SAInner&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&>&&,
+                                 std::tuple<int const&, SAInner&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc2, 1>;
+        using U = NotUsesAllocator<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int, int const &>;
+        int x = 42;
+        int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        const PairIn in(x, y);
+        A.construct(ptr, in);
+        assert(checkConstruct<int const&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int const&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int const&>&&,
+                                 std::tuple<int const&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int const&>&&,
+                                 std::tuple<int const&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+int main(int, char**) {
+    test_no_inner_alloc();
+    test_with_inner_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_piecewise.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_piecewise.pass.cpp
new file mode 100644
index 0000000..b07f036
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_piecewise.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OtherAlloc, class ...InnerAlloc>
+//   class scoped_allocator_adaptor
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void scoped_allocator_adaptor::construct(pair<U1, U2>*,
+//     piecewise_construct_t, tuple<Args1...>, tuple<Args2...>)
+
+#include <scoped_allocator>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+
+#include "test_macros.h"
+
+
+void test_no_inner_alloc()
+{
+    using VoidAlloc = CountingAllocator<void>;
+    AllocController P;
+    {
+        using T = UsesAllocatorV1<VoidAlloc, 1>;
+        using U = UsesAllocatorV2<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        A.construct(ptr, std::piecewise_construct,
+                    std::forward_as_tuple(x),
+                    std::forward_as_tuple(std::move(y)));
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&&>(ptr->second, UA_AllocLast, CA));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&>&&,
+                                 std::tuple<int const&&, const SA&>&&
+              >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&>&&,
+                                 std::tuple<int const&&, SA&>&&
+              >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+
+    }
+    P.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc, 1>;
+        using U = NotUsesAllocator<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        A.construct(ptr, std::piecewise_construct,
+                    std::forward_as_tuple(std::move(x)),
+                    std::forward_as_tuple(y));
+        assert(checkConstruct<int&&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+
+void test_with_inner_alloc()
+{
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV1<VoidAlloc2, 1>;
+        using U = UsesAllocatorV2<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        A.construct(ptr, std::piecewise_construct,
+                    std::forward_as_tuple(x),
+                    std::forward_as_tuple(std::move(y)));
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int &&>(ptr->second, UA_AllocLast));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&>&&,
+                                 std::tuple<int &&, const SAInner&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&>&&,
+                                 std::tuple<int &&, SAInner&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc2, 1>;
+        using U = NotUsesAllocator<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        const int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        A.construct(ptr, std::piecewise_construct,
+                    std::forward_as_tuple(std::move(x)),
+                    std::forward_as_tuple(std::move(y)));
+        assert(checkConstruct<int&&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int const&&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&&>&&,
+                                 std::tuple<int const&&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&&>&&,
+                                 std::tuple<int const&&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+int main(int, char**) {
+    test_no_inner_alloc();
+    test_with_inner_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_rvalue.pass.cpp
new file mode 100644
index 0000000..4d01e3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_rvalue.pass.cpp
@@ -0,0 +1,189 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OtherAlloc, class ...InnerAlloc>
+//   class scoped_allocator_adaptor
+
+// template <class U1, class U2>
+// void scoped_allocator_adaptor::construct(pair<U1, U2>*, pair<T1, T2>&&)
+
+#include <scoped_allocator>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+
+#include "test_macros.h"
+
+
+void test_no_inner_alloc()
+{
+    using VoidAlloc = CountingAllocator<void>;
+    AllocController P;
+    {
+        using T = UsesAllocatorV1<VoidAlloc, 1>;
+        using U = UsesAllocatorV2<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int&, int const&&>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        PairIn in(x, std::move(y));
+        A.construct(ptr, std::move(in));
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&&>(ptr->second, UA_AllocLast, CA));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&>&&,
+                                 std::tuple<int const&&, const SA&>&&
+              >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&>&&,
+                                 std::tuple<int const&&, SA&>&&
+              >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+
+    }
+    P.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc, 1>;
+        using U = NotUsesAllocator<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int, int const&>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        PairIn in(x, y);
+        A.construct(ptr, std::move(in));
+        assert(checkConstruct<int&&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+
+void test_with_inner_alloc()
+{
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV1<VoidAlloc2, 1>;
+        using U = UsesAllocatorV2<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int&, int const&&>;
+        int x = 42;
+        int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        PairIn in(x, std::move(y));
+        A.construct(ptr, std::move(in));
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int const&&>(ptr->second, UA_AllocLast));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&>&&,
+                                 std::tuple<int const&&, const SAInner&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&>&&,
+                                 std::tuple<int const&&, SAInner&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc2, 1>;
+        using U = NotUsesAllocator<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        using PairIn = std::pair<int, int const &>;
+        int x = 42;
+        int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        PairIn in(x, y);
+        A.construct(ptr, std::move(in));
+        assert(checkConstruct<int&&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int const&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&&>&&,
+                                 std::tuple<int const&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&&>&&,
+                                 std::tuple<int const&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+int main(int, char**) {
+    test_no_inner_alloc();
+    test_with_inner_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_values.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_values.pass.cpp
new file mode 100644
index 0000000..10f2f48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_pair_values.pass.cpp
@@ -0,0 +1,181 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OtherAlloc, class ...InnerAlloc>
+//   class scoped_allocator_adaptor
+
+// template <class U1, class U2, class Tp, class Vp>
+// void scoped_allocator_adaptor::construct(pair<U1, U2>*, Tp&&, Up&&)
+
+#include <scoped_allocator>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+
+#include "test_macros.h"
+
+
+void test_no_inner_alloc()
+{
+    using VoidAlloc = CountingAllocator<void>;
+    AllocController P;
+    {
+        using T = UsesAllocatorV1<VoidAlloc, 1>;
+        using U = UsesAllocatorV2<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        A.construct(ptr, x, std::move(y));
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&&>(ptr->second, UA_AllocLast, CA));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&>&&,
+                                 std::tuple<int const&&, const SA&>&&
+              >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&>&&,
+                                 std::tuple<int const&&, SA&>&&
+              >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+
+    }
+    P.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc, 1>;
+        using U = NotUsesAllocator<VoidAlloc, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        const int y = 101;
+        using Alloc = CountingAllocator<Pair>;
+        using SA = std::scoped_allocator_adaptor<Alloc>;
+        static_assert(std::uses_allocator<T, CountingAllocator<T> >::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Alloc CA(P);
+        SA A(CA);
+        A.construct(ptr, std::move(x), y);
+        assert(checkConstruct<int&&>(ptr->first, UA_AllocArg, CA));
+        assert(checkConstruct<int const&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((P.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SA&, int&&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#else
+        assert((P.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SA&, int&&>&&,
+                                 std::tuple<int const&>&&
+                   >(CA, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+
+void test_with_inner_alloc()
+{
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV1<VoidAlloc2, 1>;
+        using U = UsesAllocatorV2<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        A.construct(ptr, x, std::move(y));
+        assert(checkConstruct<int&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int &&>(ptr->second, UA_AllocLast));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&>&&,
+                                 std::tuple<int &&, const SAInner&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&>&&,
+                                 std::tuple<int &&, SAInner&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+    {
+        using T = UsesAllocatorV3<VoidAlloc2, 1>;
+        using U = NotUsesAllocator<VoidAlloc2, 1>;
+        using Pair = std::pair<T, U>;
+        int x = 42;
+        const int y = 101;
+        using Outer = CountingAllocator<Pair, 1>;
+        using Inner = CountingAllocator<Pair, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        using SAInner = std::scoped_allocator_adaptor<Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        Pair * ptr = (Pair*)std::malloc(sizeof(Pair));
+        assert(ptr != nullptr);
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        A.construct(ptr, std::move(x), std::move(y));
+        assert(checkConstruct<int&&>(ptr->first, UA_AllocArg, I));
+        assert(checkConstruct<int const&&>(ptr->second, UA_None));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::piecewise_construct_t&&,
+                                 std::tuple<std::allocator_arg_t, const SAInner&, int&&>&&,
+                                 std::tuple<int const&&>&&
+              >(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::piecewise_construct_t const&,
+                                 std::tuple<std::allocator_arg_t, SAInner&, int&&>&&,
+                                 std::tuple<int const&&>&&
+              >(O, ptr)));
+#endif
+        A.destroy(ptr);
+        std::free(ptr);
+    }
+}
+int main(int, char**) {
+    test_no_inner_alloc();
+    test_with_inner_alloc();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_type.pass.cpp
new file mode 100644
index 0000000..ef35897
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/construct_type.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <scoped_allocator>
+
+// template <class OtherAlloc, class ...InnerAlloc>
+//   class scoped_allocator_adaptor
+
+// template <class T, class ...Args>
+// void scoped_allocator_adaptor::construct(T*, Args&&...)
+
+#include <scoped_allocator>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+
+#include "test_macros.h"
+
+// - If uses_allocator_v<T, inner_allocator_type> is false and
+//   is_constructible_v<T, Args...> is true, calls
+//   OUTERMOST_ALLOC_TRAITS(*this)::construct(
+//      OUTERMOST (*this), p, std::forward<Args>(args)...).
+void test_bullet_one() {
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = NotUsesAllocator<VoidAlloc2, 3>;
+        using Outer = CountingAllocator<T, 1>;
+        using Inner = CountingAllocator<T, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(!std::uses_allocator<T, Inner>::value, "");
+        T* ptr = (T*)::operator new(sizeof(T));
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        int x = 42;
+        int const& cx = x;
+        A.construct(ptr, x, cx, std::move(x));
+        assert((checkConstruct<int&, int const&, int&&>(*ptr, UA_None)));
+        assert((POuter.checkConstruct<int&, int const&, int&&>(O, ptr)));
+        A.destroy(ptr);
+        ::operator delete((void*)ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+}
+
+
+// Otherwise, if uses_allocator_v<T, inner_allocator_type> is true and
+// is_constructible_v<T, allocator_arg_t, inner_allocator_type&, Args...> is
+// true, calls OUTERMOST_ALLOC_TRAITS(*this)::construct(OUTERMOST (*this), p,
+//     allocator_arg, inner_allocator(), std::forward<Args>(args)...).
+void test_bullet_two() {
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV1<VoidAlloc2, 3>;
+        using Outer = CountingAllocator<T, 1>;
+        using Inner = CountingAllocator<T, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        T* ptr = (T*)::operator new(sizeof(T));
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        int x = 42;
+        int const& cx = x;
+        A.construct(ptr, x, cx, std::move(x));
+        assert((checkConstruct<int&, int const&, int&&>(*ptr, UA_AllocArg, I)));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<std::allocator_arg_t&&,
+                   const SA::inner_allocator_type&, int&, int const&, int&&>(O, ptr)));
+#else
+        assert((POuter.checkConstruct<std::allocator_arg_t const&,
+                   SA::inner_allocator_type&, int&, int const&, int&&>(O, ptr)));
+#endif
+        A.destroy(ptr);
+        ::operator delete((void*)ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+}
+
+// Otherwise, if uses_allocator_v<T, inner_allocator_type> is true and
+// is_constructible_v<T, Args..., inner_allocator_type&> is true, calls
+// OUTERMOST_ALLOC_TRAITS(*this)::construct(OUTERMOST (*this), p,
+//   std::forward<Args>(args)..., inner_allocator()).
+void test_bullet_three() {
+    using VoidAlloc2 = CountingAllocator<void, 2>;
+
+    AllocController POuter;
+    AllocController PInner;
+    {
+        using T = UsesAllocatorV2<VoidAlloc2, 3>;
+        using Outer = CountingAllocator<T, 1>;
+        using Inner = CountingAllocator<T, 2>;
+        using SA = std::scoped_allocator_adaptor<Outer, Inner>;
+        static_assert(!std::uses_allocator<T, Outer>::value, "");
+        static_assert(std::uses_allocator<T, Inner>::value, "");
+        T* ptr = (T*)::operator new(sizeof(T));
+        Outer O(POuter);
+        Inner I(PInner);
+        SA A(O, I);
+        int x = 42;
+        int const& cx = x;
+        A.construct(ptr, x, cx, std::move(x));
+        assert((checkConstruct<int&, int const&, int&&>(*ptr, UA_AllocLast, I)));
+#if TEST_STD_VER >= 20
+        assert((POuter.checkConstruct<
+                   int&, int const&, int&&,
+                   const SA::inner_allocator_type&>(O, ptr)));
+#else
+        assert((POuter.checkConstruct<
+                   int&, int const&, int&&,
+                   SA::inner_allocator_type&>(O, ptr)));
+#endif
+        A.destroy(ptr);
+        ::operator delete((void*)ptr);
+    }
+    PInner.reset();
+    POuter.reset();
+}
+
+int main(int, char**) {
+    test_bullet_one();
+    test_bullet_two();
+    test_bullet_three();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/deallocate.pass.cpp
new file mode 100644
index 0000000..547de83
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/deallocate.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// void deallocate(pointer p, size_type n);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a;
+        a.deallocate((int*)10, 20);
+        assert((A1<int>::deallocate_called == std::pair<int*, std::size_t>((int*)10, 20)));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a;
+        a.deallocate((int*)10, 20);
+        assert((A1<int>::deallocate_called == std::pair<int*, std::size_t>((int*)10, 20)));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a;
+        a.deallocate((int*)10, 20);
+        assert((A1<int>::deallocate_called == std::pair<int*, std::size_t>((int*)10, 20)));
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/destroy.pass.cpp
new file mode 100644
index 0000000..5e00910
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/destroy.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// template <class T> void destroy(T* p);
+
+#include <scoped_allocator>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+struct B
+{
+    static bool constructed;
+
+    B() {constructed = true;}
+    ~B() {constructed = false;}
+};
+
+bool B::constructed = false;
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<B>> A;
+        A a;
+        char buf[100];
+        typedef B S;
+        S* s = (S*)buf;
+        assert(!S::constructed);
+        a.construct(s);
+        assert(S::constructed);
+        a.destroy(s);
+        assert(!S::constructed);
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A3<B>, A1<B>> A;
+        A a;
+        char buf[100];
+        typedef B S;
+        S* s = (S*)buf;
+        assert(!S::constructed);
+        assert(!A3<S>::constructed);
+        assert(!A3<S>::destroy_called);
+        a.construct(s);
+        assert(S::constructed);
+        assert(A3<S>::constructed);
+        assert(!A3<S>::destroy_called);
+        a.destroy(s);
+        assert(!S::constructed);
+        assert(A3<S>::constructed);
+        assert(A3<S>::destroy_called);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/inner_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/inner_allocator.pass.cpp
new file mode 100644
index 0000000..da553d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/inner_allocator.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// inner_allocator_type& inner_allocator();
+// const inner_allocator_type& inner_allocator() const;
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a(A1<int>(5));
+        assert(a.inner_allocator() == a);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a(A1<int>(5), A2<int>(6));
+        assert(a.inner_allocator() == std::scoped_allocator_adaptor<A2<int>>(A2<int>(6)));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a(A1<int>(5), A2<int>(6), A3<int>(8));
+        assert((a.inner_allocator() ==
+            std::scoped_allocator_adaptor<A2<int>, A3<int>>(A2<int>(6), A3<int>(8))));
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/max_size.pass.cpp
new file mode 100644
index 0000000..4fa8f92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/max_size.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// size_type max_size() const;
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        const A a(A1<int>(100));
+        assert(a.max_size() == 100);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        const A a(A1<int>(20), A2<int>());
+        assert(a.max_size() == 20);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        const A a(A1<int>(200), A2<int>(), A3<int>());
+        assert(a.max_size() == 200);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/outer_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/outer_allocator.pass.cpp
new file mode 100644
index 0000000..b98fc96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/outer_allocator.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// outer_allocator_type& outer_allocator();
+// const outer_allocator_type& outer_allocator() const;
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a(A1<int>(5));
+        assert(a.outer_allocator() == A1<int>(5));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a(A1<int>(5), A2<int>(6));
+        assert(a.outer_allocator() == A1<int>(5));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a(A1<int>(5), A2<int>(6), A3<int>(8));
+        assert(a.outer_allocator() == A1<int>(5));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/select_on_container_copy_construction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/select_on_container_copy_construction.pass.cpp
new file mode 100644
index 0000000..b4f52e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.members/select_on_container_copy_construction.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// scoped_allocator_adaptor select_on_container_copy_construction() const;
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a1(A1<int>(3));
+        assert(a1.outer_allocator().id() == 3);
+        A a2 = std::allocator_traits<A>::select_on_container_copy_construction(a1);
+        assert(a2.outer_allocator().id() == 3);
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A3<int>> A;
+        A a1(A3<int>(3));
+        assert(a1.outer_allocator().id() == 3);
+        A a2 = std::allocator_traits<A>::select_on_container_copy_construction(a1);
+        assert(a2.outer_allocator().id() == -1);
+    }
+
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a1(A1<int>(1), A2<int>(2), A3<int>(3));
+        assert(a1.outer_allocator().id() == 1);
+        assert(a1.inner_allocator().outer_allocator().id() == 2);
+        assert(a1.inner_allocator().inner_allocator().outer_allocator().id() == 3);
+        A a2 = std::allocator_traits<A>::select_on_container_copy_construction(a1);
+        assert(a2.outer_allocator().id() == 1);
+        assert(a2.inner_allocator().outer_allocator().id() == 2);
+        assert(a2.inner_allocator().inner_allocator().outer_allocator().id() == -1);
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/allocator_pointers.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/allocator_pointers.pass.cpp
new file mode 100644
index 0000000..c96c208
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/allocator_pointers.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <scoped_allocator>
+#include <memory>
+#include <cassert>
+
+// #include <memory>
+
+#include "test_macros.h"
+//
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc                        allocator_type;
+//     typedef typename allocator_type::value_type
+//                                          value_type;
+//
+//     typedef Alloc::pointer | value_type* pointer;
+//     typedef Alloc::const_pointer
+//           | pointer_traits<pointer>::rebind<const value_type>
+//                                          const_pointer;
+//     typedef Alloc::void_pointer
+//           | pointer_traits<pointer>::rebind<void>
+//                                          void_pointer;
+//     typedef Alloc::const_void_pointer
+//           | pointer_traits<pointer>::rebind<const void>
+//                                          const_void_pointer;
+
+template <typename Alloc>
+void test_pointer()
+{
+     typename std::allocator_traits<Alloc>::pointer        vp;
+     typename std::allocator_traits<Alloc>::const_pointer cvp;
+
+     ((void)vp); // Prevent unused warning
+     ((void)cvp); // Prevent unused warning
+
+     static_assert(std::is_same<bool, decltype( vp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype( vp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype(cvp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <= cvp)>::value, "");
+}
+
+template <typename Alloc>
+void test_void_pointer()
+{
+     typename std::allocator_traits<Alloc>::void_pointer        vp;
+     typename std::allocator_traits<Alloc>::const_void_pointer cvp;
+
+     ((void)vp); // Prevent unused warning
+     ((void)cvp); // Prevent unused warning
+
+     static_assert(std::is_same<bool, decltype( vp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype( vp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype(cvp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <= cvp)>::value, "");
+}
+
+struct Foo { int x; };
+
+int main(int, char**)
+{
+    test_pointer<std::scoped_allocator_adaptor<std::allocator<char>>> ();
+    test_pointer<std::scoped_allocator_adaptor<std::allocator<int>>> ();
+    test_pointer<std::scoped_allocator_adaptor<std::allocator<Foo>>> ();
+
+    test_void_pointer<std::scoped_allocator_adaptor<std::allocator<char>>> ();
+    test_void_pointer<std::scoped_allocator_adaptor<std::allocator<int>>> ();
+    test_void_pointer<std::scoped_allocator_adaptor<std::allocator<Foo>>> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/inner_allocator_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/inner_allocator_type.pass.cpp
new file mode 100644
index 0000000..7503a36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/inner_allocator_type.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// typedef see below inner_allocator_type;
+
+#include <scoped_allocator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::inner_allocator_type,
+        std::scoped_allocator_adaptor<A1<int>>>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>>::inner_allocator_type,
+        std::scoped_allocator_adaptor<A2<int>>>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::inner_allocator_type,
+        std::scoped_allocator_adaptor<A2<int>, A3<int>>>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/is_always_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/is_always_equal.pass.cpp
new file mode 100644
index 0000000..14affd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/is_always_equal.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// typedef see below is_always_equal;
+
+#include <scoped_allocator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    // sanity checks
+    static_assert( (std::is_same<
+            std::allocator_traits<A1<int>>::is_always_equal, std::false_type>::value
+            ), "" );
+
+    static_assert( (std::is_same<
+            std::allocator_traits<min_allocator<int>>::is_always_equal, std::true_type>::value
+            ), "" );
+
+    // wrapping one allocator
+    static_assert(
+        (std::is_same<
+            std::scoped_allocator_adaptor<A1<int>>::is_always_equal,
+            std::allocator_traits<A1<int>>::is_always_equal
+        >::value), "");
+
+    // wrapping one allocator
+    static_assert(
+        (std::is_same<
+            std::scoped_allocator_adaptor<min_allocator<int>>::is_always_equal,
+            std::allocator_traits<min_allocator<int>>::is_always_equal
+        >::value), "");
+
+    // wrapping two allocators (check the values instead of the types)
+    static_assert((
+            std::scoped_allocator_adaptor<A1<int>, A2<int>>::is_always_equal::value ==
+            ( std::allocator_traits<A1<int>>::is_always_equal::value &&
+              std::allocator_traits<A2<int>>::is_always_equal::value)
+        ), "");
+
+    // wrapping two allocators (check the values instead of the types)
+    static_assert((
+            std::scoped_allocator_adaptor<A1<int>, min_allocator<int>>::is_always_equal::value ==
+            ( std::allocator_traits<A1<int>>::is_always_equal::value &&
+              std::allocator_traits<min_allocator<int>>::is_always_equal::value)
+        ), "");
+
+
+    // wrapping three allocators (check the values instead of the types)
+    static_assert((
+            std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::is_always_equal::value ==
+            ( std::allocator_traits<A1<int>>::is_always_equal::value &&
+              std::allocator_traits<A2<int>>::is_always_equal::value &&
+              std::allocator_traits<A3<int>>::is_always_equal::value)
+        ), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_copy_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_copy_assignment.pass.cpp
new file mode 100644
index 0000000..fe89cc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_copy_assignment.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// typedef see below propagate_on_container_copy_assignment;
+
+#include <scoped_allocator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::propagate_on_container_copy_assignment,
+        std::false_type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>>::propagate_on_container_copy_assignment,
+        std::false_type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::propagate_on_container_copy_assignment,
+        std::true_type>::value), "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_move_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_move_assignment.pass.cpp
new file mode 100644
index 0000000..e9c7e7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_move_assignment.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// typedef see below propagate_on_container_move_assignment;
+
+#include <scoped_allocator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::propagate_on_container_move_assignment,
+        std::false_type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>>::propagate_on_container_move_assignment,
+        std::true_type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::propagate_on_container_move_assignment,
+        std::true_type>::value), "");
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_swap.pass.cpp
new file mode 100644
index 0000000..f761a28
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/propagate_on_container_swap.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// typedef see below propagate_on_container_swap;
+
+#include <scoped_allocator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::propagate_on_container_swap,
+        std::false_type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>>::propagate_on_container_swap,
+        std::false_type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::propagate_on_container_swap,
+        std::true_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/copy_assign.pass.cpp
new file mode 100644
index 0000000..89acb89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/copy_assign.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor& other);
+
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a1(A1<int>(3));
+        A aN;
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        aN = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(aN == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a1(A1<int>(4), A2<int>(5));
+        A aN;
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        aN = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(aN == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A aN;
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A3<int>::copy_called = false;
+        A3<int>::move_called = false;
+        aN = a1;
+        assert(A1<int>::copy_called == true);
+        assert(A1<int>::move_called == false);
+        assert(A2<int>::copy_called == true);
+        assert(A2<int>::move_called == false);
+        assert(A3<int>::copy_called == true);
+        assert(A3<int>::move_called == false);
+        assert(aN == a1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/eq.pass.cpp
new file mode 100644
index 0000000..706e22a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/eq.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// template <class OuterA1, class OuterA2, class... InnerAllocs>
+//     bool
+//     operator==(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a,
+//                const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b);
+//
+// template <class OuterA1, class OuterA2, class... InnerAllocs>
+//     bool
+//     operator!=(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a,
+//                const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b);
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a1(A1<int>(3));
+        A a2 = a1;
+        assert(a2 == a1);
+        assert(!(a2 != a1));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a1(A1<int>(4), A2<int>(5));
+        A a2 = a1;
+        assert(a2 == a1);
+        assert(!(a2 != a1));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A a2 = a1;
+        assert(a2 == a1);
+        assert(!(a2 != a1));
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A a2(A1<int>(4), A2<int>(5), A3<int>(5));
+        assert(a2 != a1);
+        assert(!(a2 == a1));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/move_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/move_assign.pass.cpp
new file mode 100644
index 0000000..102a602
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/scoped.adaptor.operators/move_assign.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+//   class scoped_allocator_adaptor
+
+// scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor&& other);
+
+
+#include <scoped_allocator>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>> A;
+        A a1(A1<int>(3));
+        A aN;
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        aN = std::move(a1);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(aN == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>> A;
+        A a1(A1<int>(4), A2<int>(5));
+        A aN;
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        aN = std::move(a1);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == true);
+        assert(aN == a1);
+    }
+    {
+        typedef std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>> A;
+        A a1(A1<int>(4), A2<int>(5), A3<int>(6));
+        A aN;
+        A1<int>::copy_called = false;
+        A1<int>::move_called = false;
+        A2<int>::copy_called = false;
+        A2<int>::move_called = false;
+        A3<int>::copy_called = false;
+        A3<int>::move_called = false;
+        aN = std::move(a1);
+        assert(A1<int>::copy_called == false);
+        assert(A1<int>::move_called == true);
+        assert(A2<int>::copy_called == false);
+        assert(A2<int>::move_called == true);
+        assert(A3<int>::copy_called == false);
+        assert(A3<int>::move_called == true);
+        assert(aN == a1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/types.pass.cpp
new file mode 100644
index 0000000..13f1343
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/allocator.adaptor/types.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// template <class OuterAlloc, class... InnerAllocs>
+// class scoped_allocator_adaptor
+//     : public OuterAlloc
+// {
+// public:
+//     typedef OuterAlloc outer_allocator_type;
+//     typedef typename OuterTraits::size_type size_type;
+//     typedef typename OuterTraits::difference_type difference_type;
+//     typedef typename OuterTraits::pointer pointer;
+//     typedef typename OuterTraits::const_pointer const_pointer;
+//     typedef typename OuterTraits::void_pointer void_pointer;
+//     typedef typename OuterTraits::const_void_pointer const_void_pointer;
+// };
+
+#include <scoped_allocator>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "allocators.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<
+        A1<int>,
+        std::scoped_allocator_adaptor<A1<int>>
+        >::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::outer_allocator_type,
+        A1<int>>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::size_type,
+        std::make_unsigned<std::ptrdiff_t>::type>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::difference_type,
+        std::ptrdiff_t>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::pointer,
+        int*>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::const_pointer,
+        const int*>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::void_pointer,
+        void*>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A1<int>>::const_void_pointer,
+        const void*>::value), "");
+
+    static_assert((std::is_base_of<
+        A2<int>,
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>
+        >::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::outer_allocator_type,
+        A2<int>>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::size_type,
+        unsigned>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::difference_type,
+        int>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::pointer,
+        int*>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::const_pointer,
+        const int*>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::void_pointer,
+        void*>::value), "");
+
+    static_assert((std::is_same<
+        std::scoped_allocator_adaptor<A2<int>, A1<int>>::const_void_pointer,
+        const void*>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/copy.pass.cpp
new file mode 100644
index 0000000..f235b70
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/copy.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// any& operator=(const any&);
+
+// Test copy assignment
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+template <class LHS, class RHS>
+void test_copy_assign() {
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+    LHS::reset();
+    RHS::reset();
+    {
+        std::any lhs = LHS(1);
+        const std::any rhs = RHS(2);
+
+        assert(LHS::count == 1);
+        assert(RHS::count == 1);
+        assert(RHS::copied == 0);
+
+        lhs = rhs;
+
+        assert(RHS::copied == 1);
+        assert(LHS::count == 0);
+        assert(RHS::count == 2);
+
+        assertContains<RHS>(lhs, 2);
+        assertContains<RHS>(rhs, 2);
+    }
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+}
+
+template <class LHS>
+void test_copy_assign_empty() {
+    assert(LHS::count == 0);
+    LHS::reset();
+    {
+        std::any lhs;
+        const std::any rhs = LHS(42);
+
+        assert(LHS::count == 1);
+        assert(LHS::copied == 0);
+
+        lhs = rhs;
+
+        assert(LHS::copied == 1);
+        assert(LHS::count == 2);
+
+        assertContains<LHS>(lhs, 42);
+        assertContains<LHS>(rhs, 42);
+    }
+    assert(LHS::count == 0);
+    LHS::reset();
+    {
+        std::any lhs = LHS(1);
+        const std::any rhs;
+
+        assert(LHS::count == 1);
+        assert(LHS::copied == 0);
+
+        lhs = rhs;
+
+        assert(LHS::copied == 0);
+        assert(LHS::count == 0);
+
+        assertEmpty<LHS>(lhs);
+        assertEmpty(rhs);
+    }
+    assert(LHS::count == 0);
+}
+
+void test_copy_assign_self() {
+    // empty
+    {
+        std::any a;
+        a = (std::any&)a;
+        assertEmpty(a);
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    // small
+    {
+        std::any a = small(1);
+        assert(small::count == 1);
+
+        a = (std::any&)a;
+
+        assert(small::count == 1);
+        assertContains<small>(a, 1);
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+    }
+    assert(small::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    // large
+    {
+        std::any a = large(1);
+        assert(large::count == 1);
+
+        a = (std::any&)a;
+
+        assert(large::count == 1);
+        assertContains<large>(a, 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+    }
+    assert(large::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class Tp>
+void test_copy_assign_throws()
+{
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    auto try_throw =
+    [](std::any& lhs, const std::any& rhs) {
+        try {
+            lhs = rhs;
+            assert(false);
+        } catch (const my_any_exception&) {
+            // do nothing
+        } catch (...) {
+            assert(false);
+        }
+    };
+    // const lvalue to empty
+    {
+        std::any lhs;
+        const std::any rhs = Tp(1);
+        assert(Tp::count == 1);
+
+        try_throw(lhs, rhs);
+
+        assert(Tp::count == 1);
+        assertEmpty<Tp>(lhs);
+        assertContains<Tp>(rhs, 1);
+    }
+    {
+        std::any lhs = small(2);
+        const std::any rhs = Tp(1);
+        assert(small::count == 1);
+        assert(Tp::count == 1);
+
+        try_throw(lhs, rhs);
+
+        assert(small::count == 1);
+        assert(Tp::count == 1);
+        assertContains<small>(lhs, 2);
+        assertContains<Tp>(rhs, 1);
+    }
+    {
+        std::any lhs = large(2);
+        const std::any rhs = Tp(1);
+        assert(large::count == 1);
+        assert(Tp::count == 1);
+
+        try_throw(lhs, rhs);
+
+        assert(large::count == 1);
+        assert(Tp::count == 1);
+        assertContains<large>(lhs, 2);
+        assertContains<Tp>(rhs, 1);
+    }
+#endif
+}
+
+int main(int, char**) {
+    globalMemCounter.reset();
+    test_copy_assign<small1, small2>();
+    test_copy_assign<large1, large2>();
+    test_copy_assign<small, large>();
+    test_copy_assign<large, small>();
+    test_copy_assign_empty<small>();
+    test_copy_assign_empty<large>();
+    test_copy_assign_self();
+    test_copy_assign_throws<small_throws_on_copy>();
+    test_copy_assign_throws<large_throws_on_copy>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/move.pass.cpp
new file mode 100644
index 0000000..ec0b6c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/move.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// any& operator=(any &&);
+
+// Test move assignment.
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "test_macros.h"
+
+template <class LHS, class RHS>
+void test_move_assign() {
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+    {
+        LHS const s1(1);
+        std::any a = s1;
+        RHS const s2(2);
+        std::any a2 = s2;
+
+        assert(LHS::count == 2);
+        assert(RHS::count == 2);
+
+        a = std::move(a2);
+
+        assert(LHS::count == 1);
+        assert(RHS::count == 2 + a2.has_value());
+        LIBCPP_ASSERT(RHS::count == 2); // libc++ leaves the object empty
+
+        assertContains<RHS>(a, 2);
+        if (a2.has_value())
+            assertContains<RHS>(a2, 0);
+        LIBCPP_ASSERT(!a2.has_value());
+    }
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+}
+
+template <class LHS>
+void test_move_assign_empty() {
+    assert(LHS::count == 0);
+    {
+        std::any a;
+        std::any a2 = LHS(1);
+
+        assert(LHS::count == 1);
+
+        a = std::move(a2);
+
+        assert(LHS::count == 1 + a2.has_value());
+        LIBCPP_ASSERT(LHS::count == 1);
+
+        assertContains<LHS>(a, 1);
+        if (a2.has_value())
+            assertContains<LHS>(a2, 0);
+        LIBCPP_ASSERT(!a2.has_value());
+    }
+    assert(LHS::count == 0);
+    {
+        std::any a = LHS(1);
+        std::any a2;
+
+        assert(LHS::count == 1);
+
+        a = std::move(a2);
+
+        assert(LHS::count == 0);
+
+        assertEmpty<LHS>(a);
+        assertEmpty(a2);
+    }
+    assert(LHS::count == 0);
+}
+
+void test_move_assign_noexcept() {
+    std::any a1;
+    std::any a2;
+    ASSERT_NOEXCEPT(a1 = std::move(a2));
+}
+
+int main(int, char**) {
+    test_move_assign_noexcept();
+    test_move_assign<small1, small2>();
+    test_move_assign<large1, large2>();
+    test_move_assign<small, large>();
+    test_move_assign<large, small>();
+    test_move_assign_empty<small>();
+    test_move_assign_empty<large>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/value.pass.cpp
new file mode 100644
index 0000000..a4a4095
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.assign/value.pass.cpp
@@ -0,0 +1,210 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class ValueType>
+// any& operator=(ValueType&&);
+
+// Test value copy and move assignment.
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+template <class LHS, class RHS>
+void test_assign_value() {
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+    LHS::reset();
+    RHS::reset();
+    {
+        std::any lhs = LHS(1);
+        const std::any rhs = RHS(2);
+
+        assert(LHS::count == 1);
+        assert(RHS::count == 1);
+        assert(RHS::copied == 0);
+
+        lhs = rhs;
+
+        assert(RHS::copied == 1);
+        assert(LHS::count == 0);
+        assert(RHS::count == 2);
+
+        assertContains<RHS>(lhs, 2);
+        assertContains<RHS>(rhs, 2);
+    }
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+    LHS::reset();
+    RHS::reset();
+    {
+        std::any lhs = LHS(1);
+        std::any rhs = RHS(2);
+
+        assert(LHS::count == 1);
+        assert(RHS::count == 1);
+        assert(RHS::moved == 1);
+
+        lhs = std::move(rhs);
+
+        assert(RHS::moved >= 1);
+        assert(RHS::copied == 0);
+        assert(LHS::count == 0);
+        assert(RHS::count == 1 + rhs.has_value());
+        LIBCPP_ASSERT(!rhs.has_value());
+
+        assertContains<RHS>(lhs, 2);
+        if (rhs.has_value())
+            assertContains<RHS>(rhs, 0);
+    }
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+}
+
+template <class RHS>
+void test_assign_value_empty() {
+    assert(RHS::count == 0);
+    RHS::reset();
+    {
+        std::any lhs;
+        RHS rhs(42);
+        assert(RHS::count == 1);
+        assert(RHS::copied == 0);
+
+        lhs = rhs;
+
+        assert(RHS::count == 2);
+        assert(RHS::copied == 1);
+        assert(RHS::moved >= 0);
+        assertContains<RHS>(lhs, 42);
+    }
+    assert(RHS::count == 0);
+    RHS::reset();
+    {
+        std::any lhs;
+        RHS rhs(42);
+        assert(RHS::count == 1);
+        assert(RHS::moved == 0);
+
+        lhs = std::move(rhs);
+
+        assert(RHS::count == 2);
+        assert(RHS::copied == 0);
+        assert(RHS::moved >= 1);
+        assertContains<RHS>(lhs, 42);
+    }
+    assert(RHS::count == 0);
+    RHS::reset();
+}
+
+
+template <class Tp, bool Move = false>
+void test_assign_throws() {
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    auto try_throw =
+    [](std::any& lhs, Tp& rhs) {
+        try {
+            Move ? lhs = std::move(rhs)
+                 : lhs = rhs;
+            assert(false);
+        } catch (const my_any_exception&) {
+            // do nothing
+        } catch (...) {
+            assert(false);
+        }
+    };
+    // const lvalue to empty
+    {
+        std::any lhs;
+        Tp rhs(1);
+        assert(Tp::count == 1);
+
+        try_throw(lhs, rhs);
+
+        assert(Tp::count == 1);
+        assertEmpty<Tp>(lhs);
+    }
+    {
+        std::any lhs = small(2);
+        Tp rhs(1);
+        assert(small::count == 1);
+        assert(Tp::count == 1);
+
+        try_throw(lhs, rhs);
+
+        assert(small::count == 1);
+        assert(Tp::count == 1);
+        assertContains<small>(lhs, 2);
+    }
+    {
+        std::any lhs = large(2);
+        Tp rhs(1);
+        assert(large::count == 1);
+        assert(Tp::count == 1);
+
+        try_throw(lhs, rhs);
+
+        assert(large::count == 1);
+        assert(Tp::count == 1);
+        assertContains<large>(lhs, 2);
+    }
+#endif
+}
+
+
+// Test that any& operator=(ValueType&&) is *never* selected for:
+// * std::in_place type.
+// * Non-copyable types
+void test_sfinae_constraints() {
+    { // Only the constructors are required to SFINAE on in_place_t
+        using Tag = std::in_place_type_t<int>;
+        using RawTag = std::remove_reference_t<Tag>;
+        static_assert(std::is_assignable<std::any, RawTag&&>::value, "");
+    }
+    {
+        struct Dummy { Dummy() = delete; };
+        using T = std::in_place_type_t<Dummy>;
+        static_assert(std::is_assignable<std::any, T>::value, "");
+    }
+    {
+        // Test that the ValueType&& constructor SFINAE's away when the
+        // argument is non-copyable
+        struct NoCopy {
+          NoCopy() = default;
+          NoCopy(NoCopy const&) = delete;
+          NoCopy(NoCopy&&) = default;
+        };
+        static_assert(!std::is_assignable<std::any, NoCopy>::value, "");
+        static_assert(!std::is_assignable<std::any, NoCopy&>::value, "");
+    }
+}
+
+int main(int, char**) {
+    test_assign_value<small1, small2>();
+    test_assign_value<large1, large2>();
+    test_assign_value<small, large>();
+    test_assign_value<large, small>();
+    test_assign_value_empty<small>();
+    test_assign_value_empty<large>();
+    test_assign_throws<small_throws_on_copy>();
+    test_assign_throws<large_throws_on_copy>();
+    test_assign_throws<throws_on_move, /* Move = */ true>();
+    test_sfinae_constraints();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/copy.pass.cpp
new file mode 100644
index 0000000..892ef43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/copy.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// any(any const &);
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+template <class Type>
+void test_copy_throws() {
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    assert(Type::count == 0);
+    {
+        const std::any a = Type(42);
+        assert(Type::count == 1);
+        try {
+            const std::any a2(a);
+            assert(false);
+        } catch (my_any_exception const &) {
+            // do nothing
+        } catch (...) {
+            assert(false);
+        }
+        assert(Type::count == 1);
+        assertContains<Type>(a, 42);
+    }
+    assert(Type::count == 0);
+#endif
+}
+
+void test_copy_empty() {
+    DisableAllocationGuard g; ((void)g); // No allocations should occur.
+    std::any a1;
+    std::any a2(a1);
+
+    assertEmpty(a1);
+    assertEmpty(a2);
+}
+
+template <class Type>
+void test_copy()
+{
+    // Copying small types should not perform any allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = Type(42);
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+
+        std::any a2(a);
+
+        assert(Type::copied == 1);
+        assert(Type::count == 2);
+        assertContains<Type>(a, 42);
+        assertContains<Type>(a2, 42);
+
+        // Modify a and check that a2 is unchanged
+        modifyValue<Type>(a, -1);
+        assertContains<Type>(a, -1);
+        assertContains<Type>(a2, 42);
+
+        // modify a2 and check that a is unchanged
+        modifyValue<Type>(a2, 999);
+        assertContains<Type>(a, -1);
+        assertContains<Type>(a2, 999);
+
+        // clear a and check that a2 is unchanged
+        a.reset();
+        assertEmpty(a);
+        assertContains<Type>(a2, 999);
+    }
+    assert(Type::count == 0);
+}
+
+int main(int, char**) {
+    test_copy<small>();
+    test_copy<large>();
+    test_copy_empty();
+    test_copy_throws<small_throws_on_copy>();
+    test_copy_throws<large_throws_on_copy>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/default.pass.cpp
new file mode 100644
index 0000000..a20d22c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/default.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <any>
+
+// any() noexcept;
+
+#include <any>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "any_helpers.h"
+#include "count_new.h"
+
+int main(int, char**)
+{
+    {
+        static_assert(
+            std::is_nothrow_default_constructible<std::any>::value
+          , "Must be default constructible"
+          );
+    }
+    {
+        struct TestConstexpr : public std::any {
+          constexpr TestConstexpr() : std::any() {}
+        };
+        static TEST_CONSTINIT std::any a;
+        (void)a;
+    }
+    {
+        DisableAllocationGuard g; ((void)g);
+        const std::any a;
+        assertEmpty(a);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/in_place_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/in_place_type.pass.cpp
new file mode 100644
index 0000000..a1205bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/in_place_type.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class T, class ...Args> any(in_place_type_t<T>, Args&&...);
+// template <class T, class U, class ...Args>
+// any(in_place_type_t<T>, initializer_list<U>, Args&&...);
+
+// Test construction from a value.
+// Concerns:
+// ---------
+// 1. The value is properly move/copied depending on the value category.
+// 2. Both small and large values are properly handled.
+
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+#include "test_convertible.h"
+
+template <class Type>
+void test_in_place_type() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a(std::in_place_type<Type>);
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 0);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    { // Test that the in_place argument is properly decayed
+        std::any a(std::in_place_type<Type&>);
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 0);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a(std::in_place_type<Type>, 101);
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 101);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a(std::in_place_type<Type>, -1, 42, -1);
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 42);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+}
+
+template <class Type>
+void test_in_place_type_tracked() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    {
+        std::any a(std::in_place_type<Type>);
+        assertArgsMatch<Type>(a);
+    }
+    {
+        std::any a(std::in_place_type<Type>, -1, 42, -1);
+        assertArgsMatch<Type, int, int, int>(a);
+    }
+    // initializer_list constructor tests
+    {
+        std::any a(std::in_place_type<Type>, {-1, 42, -1});
+        assertArgsMatch<Type, std::initializer_list<int>>(a);
+    }
+    {
+        int x = 42;
+        std::any a(std::in_place_type<Type&>, {-1, 42, -1}, x);
+        assertArgsMatch<Type, std::initializer_list<int>, int&>(a);
+    }
+}
+
+void test_func() {}
+
+void test_in_place_type_decayed() {
+    {
+        using Type = decltype(test_func);
+        using DecayT = void(*)();
+        std::any a(std::in_place_type<Type>, test_func);
+        assert(containsType<DecayT>(a));
+        assert(std::any_cast<DecayT>(a) == test_func);
+    }
+    {
+        int my_arr[5];
+        using Type = int(&)[5];
+        using DecayT = int*;
+        std::any a(std::in_place_type<Type>, my_arr);
+        assert(containsType<DecayT>(a));
+        assert(std::any_cast<DecayT>(a) == my_arr);
+    }
+    {
+        using Type = int[5];
+        using DecayT = int*;
+        std::any a(std::in_place_type<Type>);
+        assert(containsType<DecayT>(a));
+        assert(std::any_cast<DecayT>(a) == nullptr);
+    }
+}
+
+void test_ctor_sfinae() {
+    {
+        // Test that the init-list ctor SFINAE's away properly when
+        // construction would be ill-formed.
+        using IL = std::initializer_list<int>;
+        static_assert(!std::is_constructible<std::any,
+                      std::in_place_type_t<int>, IL>::value, "");
+        static_assert(std::is_constructible<std::any,
+            std::in_place_type_t<small_tracked_t>, IL>::value, "");
+    }
+    {
+        // Test that the tagged dispatch constructor SFINAE's away when the
+        // argument is non-copyable
+        struct NoCopy {
+          NoCopy() = default;
+          NoCopy(NoCopy const&) = delete;
+          NoCopy(int) {}
+          NoCopy(std::initializer_list<int>, int) {}
+        };
+        using Tag = std::in_place_type_t<NoCopy>;
+        using RefTag = std::in_place_type_t<NoCopy&>;
+        using IL = std::initializer_list<int>;
+        static_assert(!std::is_constructible<std::any, Tag>::value, "");
+        static_assert(!std::is_constructible<std::any, Tag, int>::value, "");
+        static_assert(!std::is_constructible<std::any, Tag, IL, int>::value, "");
+        static_assert(!std::is_constructible<std::any, RefTag>::value, "");
+        static_assert(!std::is_constructible<std::any, RefTag, int>::value, "");
+        static_assert(!std::is_constructible<std::any, RefTag, IL, int>::value, "");
+    }
+}
+
+struct Implicit {
+  Implicit(int) {}
+  Implicit(int, int, int) {}
+  Implicit(std::initializer_list<int>, int) {}
+};
+
+void test_constructor_explicit() {
+    using I = Implicit;
+    using IT = std::in_place_type_t<I>;
+    static_assert(!test_convertible<std::any, IT, int>(), "");
+    static_assert(std::is_constructible<std::any, IT, int>::value, "");
+    static_assert(!test_convertible<std::any, IT, int, int, int>(), "");
+    static_assert(std::is_constructible<std::any, IT, int, int, int>::value, "");
+    static_assert(!test_convertible<std::any, IT, std::initializer_list<int>&, int>(), "");
+    static_assert(std::is_constructible<std::any, IT, std::initializer_list<int>&, int>::value, "");
+}
+
+int main(int, char**) {
+    test_in_place_type<small>();
+    test_in_place_type<large>();
+    test_in_place_type<small_throws_on_copy>();
+    test_in_place_type<large_throws_on_copy>();
+    test_in_place_type<throws_on_move>();
+    test_in_place_type_tracked<small_tracked_t>();
+    test_in_place_type_tracked<large_tracked_t>();
+    test_in_place_type_decayed();
+    test_ctor_sfinae();
+    test_constructor_explicit();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/move.pass.cpp
new file mode 100644
index 0000000..d70b688
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/move.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// any(any &&) noexcept;
+
+#include <any>
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+// Moves are always noexcept. The throws_on_move object
+// must be stored dynamically so the pointer is moved and
+// not the stored object.
+void test_move_does_not_throw()
+{
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    assert(throws_on_move::count == 0);
+    {
+        throws_on_move v(42);
+        std::any a = v;
+        assert(throws_on_move::count == 2);
+        // No allocations should be performed after this point.
+        DisableAllocationGuard g; ((void)g);
+        try {
+            const std::any a2 = std::move(a);
+            assertEmpty(a);
+            assertContains<throws_on_move>(a2, 42);
+        } catch (...) {
+            assert(false);
+        }
+        assert(throws_on_move::count == 1);
+        assertEmpty(a);
+    }
+    assert(throws_on_move::count == 0);
+#endif
+}
+
+void test_move_empty() {
+    DisableAllocationGuard g; ((void)g); // no allocations should be performed.
+
+    std::any a1;
+    std::any a2 = std::move(a1);
+
+    assertEmpty(a1);
+    assertEmpty(a2);
+}
+
+template <class Type>
+void test_move() {
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = Type(42);
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+
+        // Moving should not perform allocations since it must be noexcept.
+        DisableAllocationGuard g; ((void)g);
+
+        std::any a2 = std::move(a);
+
+        assert(Type::moved == 1 || Type::moved == 2); // zero or more move operations can be performed.
+        assert(Type::copied == 0); // no copies can be performed.
+        assert(Type::count == 1 + a.has_value());
+        assertContains<Type>(a2, 42);
+        LIBCPP_ASSERT(!a.has_value()); // Moves are always destructive.
+        if (a.has_value())
+            assertContains<Type>(a, 0);
+    }
+    assert(Type::count == 0);
+}
+
+int main(int, char**)
+{
+    // noexcept test
+    static_assert(std::is_nothrow_move_constructible<std::any>::value);
+
+    test_move<small>();
+    test_move<large>();
+    test_move_empty();
+    test_move_does_not_throw();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/value.pass.cpp
new file mode 100644
index 0000000..c7ccc58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.cons/value.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class Value> any(Value &&)
+
+// Test construction from a value.
+// Concerns:
+// ---------
+// 1. The value is properly move/copied depending on the value category.
+// 2. Both small and large values are properly handled.
+
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+template <class Type>
+void test_copy_value_throws()
+{
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    assert(Type::count == 0);
+    {
+        const Type t(42);
+        assert(Type::count == 1);
+        try {
+            std::any a2 = t;
+            assert(false);
+        } catch (const my_any_exception&) {
+            // do nothing
+        } catch (...) {
+            assert(false);
+        }
+        assert(Type::count == 1);
+        assert(t.value == 42);
+    }
+    assert(Type::count == 0);
+#endif
+}
+
+void test_move_value_throws()
+{
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    assert(throws_on_move::count == 0);
+    {
+        throws_on_move v;
+        assert(throws_on_move::count == 1);
+        try {
+            std::any a = std::move(v);
+            assert(false);
+        } catch (const my_any_exception&) {
+            // do nothing
+        } catch (...) {
+            assert(false);
+        }
+        assert(throws_on_move::count == 1);
+    }
+    assert(throws_on_move::count == 0);
+#endif
+}
+
+template <class Type>
+void test_copy_move_value() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        Type t(42);
+        assert(Type::count == 1);
+
+        std::any a = t;
+
+        assert(Type::count == 2);
+        assert(Type::copied == 1);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 42);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        Type t(42);
+        assert(Type::count == 1);
+
+        std::any a = std::move(t);
+
+        assert(Type::count == 2);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+        assertContains<Type>(a, 42);
+    }
+}
+
+// Test that any(ValueType&&) is *never* selected for a std::in_place_type_t specialization.
+void test_sfinae_constraints() {
+    using BadTag = std::in_place_type_t<int>;
+    using OKTag = std::in_place_t;
+    // Test that the tag type is properly handled in SFINAE
+    BadTag t = std::in_place_type<int>;
+    OKTag ot = std::in_place;
+    {
+        std::any a(t);
+        assertContains<int>(a, 0);
+    }
+    {
+        std::any a(std::move(t));
+        assertContains<int>(a, 0);
+    }
+    {
+        std::any a(ot);
+        assert(containsType<OKTag>(a));
+    }
+    {
+        struct Dummy { Dummy() = delete; };
+        using T = std::in_place_type_t<Dummy>;
+        static_assert(!std::is_constructible<std::any, T>::value, "");
+    }
+    {
+        // Test that the ValueType&& constructor SFINAE's away when the
+        // argument is non-copyable
+        struct NoCopy {
+          NoCopy() = default;
+          NoCopy(NoCopy const&) = delete;
+          NoCopy(int) {}
+        };
+        static_assert(!std::is_constructible<std::any, NoCopy>::value, "");
+        static_assert(!std::is_constructible<std::any, NoCopy&>::value, "");
+        static_assert(!std::is_convertible<NoCopy, std::any>::value, "");
+    }
+}
+
+int main(int, char**) {
+    test_copy_move_value<small>();
+    test_copy_move_value<large>();
+    test_copy_value_throws<small_throws_on_copy>();
+    test_copy_value_throws<large_throws_on_copy>();
+    test_move_value_throws();
+    test_sfinae_constraints();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp
new file mode 100644
index 0000000..7c5fbfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp
@@ -0,0 +1,285 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class T, class ...Args> T& emplace(Args&&...);
+// template <class T, class U, class ...Args>
+// T& emplace(initializer_list<U>, Args&&...);
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+struct Tracked {
+  static int count;
+  Tracked()  {++count;}
+  ~Tracked() { --count; }
+};
+int Tracked::count = 0;
+
+template <class Type>
+void test_emplace_type() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+
+        auto &v = a.emplace<Type>();
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 0);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+
+        auto &v = a.emplace<Type>(101);
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 101);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+
+        auto &v = a.emplace<Type>(-1, 42, -1);
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 42);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+}
+
+template <class Type>
+void test_emplace_type_tracked() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    {
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+        auto &v = a.emplace<Type>();
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assertArgsMatch<Type>(a);
+    }
+    {
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+        auto &v = a.emplace<Type>(-1, 42, -1);
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assertArgsMatch<Type, int, int, int>(a);
+    }
+    // initializer_list constructor tests
+    {
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+        auto &v = a.emplace<Type>({-1, 42, -1});
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assertArgsMatch<Type, std::initializer_list<int>>(a);
+    }
+    {
+        int x = 42;
+        std::any a(std::in_place_type<Tracked>);
+        assert(Tracked::count == 1);
+        auto &v = a.emplace<Type>({-1, 42, -1}, x);
+        static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+        assert(&v == std::any_cast<Type>(&a));
+
+        assert(Tracked::count == 0);
+        assertArgsMatch<Type, std::initializer_list<int>, int&>(a);
+    }
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+struct SmallThrows {
+  SmallThrows(int) { throw 42; }
+  SmallThrows(std::initializer_list<int>, int) { throw 42; }
+};
+static_assert(IsSmallObject<SmallThrows>::value, "");
+
+struct LargeThrows {
+  LargeThrows(int) { throw 42; }
+  LargeThrows(std::initializer_list<int>, int) { throw 42; }
+  int data[sizeof(std::any)];
+};
+static_assert(!IsSmallObject<LargeThrows>::value, "");
+
+template <class Type>
+void test_emplace_throws()
+{
+    // any stores small type
+    {
+        std::any a(small{42});
+        assert(small::count == 1);
+        try {
+            auto &v = a.emplace<Type>(101);
+            static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+            assert(false);
+        } catch (int const&) {
+        }
+        assert(small::count == 0);
+    }
+    {
+        std::any a(small{42});
+        assert(small::count == 1);
+        try {
+            auto &v = a.emplace<Type>({1, 2, 3}, 101);
+            static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+            assert(false);
+        } catch (int const&) {
+        }
+        assert(small::count == 0);
+    }
+    // any stores large type
+    {
+        std::any a(large{42});
+        assert(large::count == 1);
+        try {
+            auto &v = a.emplace<Type>(101);
+            static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+            assert(false);
+        } catch (int const&) {
+        }
+        assert(large::count == 0);
+    }
+    {
+        std::any a(large{42});
+        assert(large::count == 1);
+        try {
+            auto &v = a.emplace<Type>({1, 2, 3}, 101);
+            static_assert( std::is_same_v<Type&, decltype(v)>, "" );
+            assert(false);
+        } catch (int const&) {
+        }
+        assert(large::count == 0);
+    }
+}
+
+#endif
+
+template <class T, class ...Args>
+constexpr auto has_emplace(int)
+    -> decltype(std::any{}.emplace<T>(std::declval<Args>()...), true) { return true; }
+
+template <class ...Args>
+constexpr bool has_emplace(long) { return false; }
+
+template <class ...Args>
+constexpr bool has_emplace() { return has_emplace<Args...>(0); }
+
+
+template <class T, class IT, class ...Args>
+constexpr auto has_emplace_init_list(int)
+    -> decltype(std::any{}.emplace<T>(
+        {std::declval<IT>(), std::declval<IT>(), std::declval<IT>()},
+        std::declval<Args>()...), true) { return true; }
+
+template <class ...Args>
+constexpr bool has_emplace_init_list(long) { return false; }
+
+template <class ...Args>
+constexpr bool has_emplace_init_list() { return has_emplace_init_list<Args...>(0); }
+
+
+void test_emplace_sfinae_constraints() {
+    {
+        static_assert(has_emplace<int>(), "");
+        static_assert(has_emplace<int, int>(), "");
+        static_assert(!has_emplace<int, int, int>(), "not constructible");
+        static_assert(!has_emplace_init_list<int, int>(), "not constructible from il");
+    }
+    {
+        static_assert(has_emplace<small>(), "");
+        static_assert(has_emplace<large>(), "");
+        static_assert(!has_emplace<small, void*>(), "");
+        static_assert(!has_emplace<large, void*>(), "");
+
+        static_assert(has_emplace_init_list<small, int>(), "");
+        static_assert(has_emplace_init_list<large, int>(), "");
+        static_assert(!has_emplace_init_list<small, void*>(), "");
+        static_assert(!has_emplace_init_list<large, void*>(), "");
+    }
+    {
+        // Test that the emplace SFINAE's away when the
+        // argument is non-copyable
+        struct NoCopy {
+          NoCopy() = default;
+          NoCopy(NoCopy const&) = delete;
+          NoCopy(int) {}
+          NoCopy(std::initializer_list<int>, int, int) {}
+        };
+        static_assert(!has_emplace<NoCopy>(), "");
+        static_assert(!has_emplace<NoCopy, int>(), "");
+        static_assert(!has_emplace_init_list<NoCopy, int, int, int>(), "");
+        static_assert(!has_emplace<NoCopy&>(), "");
+        static_assert(!has_emplace<NoCopy&, int>(), "");
+        static_assert(!has_emplace_init_list<NoCopy&, int, int, int>(), "");
+        static_assert(!has_emplace<NoCopy&&>(), "");
+        static_assert(!has_emplace<NoCopy&&, int>(), "");
+        static_assert(!has_emplace_init_list<NoCopy&&, int, int, int>(), "");
+
+    }
+}
+
+int main(int, char**) {
+    test_emplace_type<small>();
+    test_emplace_type<large>();
+    test_emplace_type<small_throws_on_copy>();
+    test_emplace_type<large_throws_on_copy>();
+    test_emplace_type<throws_on_move>();
+    test_emplace_type_tracked<small_tracked_t>();
+    test_emplace_type_tracked<large_tracked_t>();
+    test_emplace_sfinae_constraints();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    test_emplace_throws<SmallThrows>();
+    test_emplace_throws<LargeThrows>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/reset.pass.cpp
new file mode 100644
index 0000000..7499ed0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/reset.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// any::reset() noexcept
+
+#include <any>
+#include <cassert>
+
+#include "test_macros.h"
+#include "any_helpers.h"
+
+int main(int, char**)
+{
+    // empty
+    {
+        std::any a;
+        ASSERT_NOEXCEPT(a.reset());
+
+        assertEmpty(a);
+
+        a.reset();
+
+        assertEmpty(a);
+    }
+    // small object
+    {
+        std::any a = small(1);
+        assert(small::count == 1);
+        assertContains<small>(a, 1);
+
+        a.reset();
+
+        assertEmpty<small>(a);
+        assert(small::count == 0);
+    }
+    // large object
+    {
+        std::any a = large(1);
+        assert(large::count == 1);
+        assertContains<large>(a, 1);
+
+        a.reset();
+
+        assertEmpty<large>(a);
+        assert(large::count == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/swap.pass.cpp
new file mode 100644
index 0000000..9e07586
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.modifiers/swap.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// any::swap(any &) noexcept
+
+// Test swap(large, small) and swap(small, large)
+
+#include <any>
+#include <cassert>
+
+#include "test_macros.h"
+#include "any_helpers.h"
+
+template <class LHS, class RHS>
+void test_swap() {
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+    {
+        std::any a1 = LHS(1);
+        std::any a2 = RHS(2);
+        assert(LHS::count == 1);
+        assert(RHS::count == 1);
+
+        a1.swap(a2);
+
+        assert(LHS::count == 1);
+        assert(RHS::count == 1);
+
+        assertContains<RHS>(a1, 2);
+        assertContains<LHS>(a2, 1);
+    }
+    assert(LHS::count == 0);
+    assert(RHS::count == 0);
+    assert(LHS::copied == 0);
+    assert(RHS::copied == 0);
+}
+
+template <class Tp>
+void test_swap_empty() {
+    assert(Tp::count == 0);
+    {
+        std::any a1 = Tp(1);
+        std::any a2;
+        assert(Tp::count == 1);
+
+        a1.swap(a2);
+
+        assert(Tp::count == 1);
+
+        assertContains<Tp>(a2, 1);
+        assertEmpty(a1);
+    }
+    assert(Tp::count == 0);
+    {
+        std::any a1 = Tp(1);
+        std::any a2;
+        assert(Tp::count == 1);
+
+        a2.swap(a1);
+
+        assert(Tp::count == 1);
+
+        assertContains<Tp>(a2, 1);
+        assertEmpty(a1);
+    }
+    assert(Tp::count == 0);
+    assert(Tp::copied == 0);
+}
+
+void test_noexcept()
+{
+    std::any a1;
+    std::any a2;
+    ASSERT_NOEXCEPT(a1.swap(a2));
+}
+
+void test_self_swap() {
+    {
+        // empty
+        std::any a;
+        a.swap(a);
+        assertEmpty(a);
+    }
+    { // small
+        using T = small;
+        std::any a = T(42);
+        T::reset();
+        a.swap(a);
+        assertContains<T>(a, 42);
+        assert(T::count == 1);
+        assert(T::copied == 0);
+        LIBCPP_ASSERT(T::moved == 0);
+    }
+    assert(small::count == 0);
+    { // large
+        using T = large;
+        std::any a = T(42);
+        T::reset();
+        a.swap(a);
+        assertContains<T>(a, 42);
+        assert(T::count == 1);
+        assert(T::copied == 0);
+        LIBCPP_ASSERT(T::moved == 0);
+    }
+    assert(large::count == 0);
+}
+
+int main(int, char**)
+{
+    test_noexcept();
+    test_swap_empty<small>();
+    test_swap_empty<large>();
+    test_swap<small1, small2>();
+    test_swap<large1, large2>();
+    test_swap<small, large>();
+    test_swap<large, small>();
+    test_self_swap();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.observers/has_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.observers/has_value.pass.cpp
new file mode 100644
index 0000000..2e6c007
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.observers/has_value.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <any>
+
+// any::has_value() noexcept
+
+#include <any>
+#include <cassert>
+
+#include "test_macros.h"
+#include "any_helpers.h"
+
+int main(int, char**)
+{
+    {
+        std::any a;
+        ASSERT_NOEXCEPT(a.has_value());
+    }
+    // empty
+    {
+        std::any a;
+        assert(!a.has_value());
+
+        a.reset();
+        assert(!a.has_value());
+
+        a = 42;
+        assert(a.has_value());
+    }
+    // small object
+    {
+        std::any a = small(1);
+        assert(a.has_value());
+
+        a.reset();
+        assert(!a.has_value());
+
+        a = small(1);
+        assert(a.has_value());
+    }
+    // large object
+    {
+        std::any a = large(1);
+        assert(a.has_value());
+
+        a.reset();
+        assert(!a.has_value());
+
+        a = large(1);
+        assert(a.has_value());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.observers/type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.observers/type.pass.cpp
new file mode 100644
index 0000000..3eeb7ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.class/any.observers/type.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// XFAIL: no-rtti
+
+// <any>
+
+// any::type() noexcept
+
+#include <any>
+#include <cassert>
+
+#include "test_macros.h"
+#include "any_helpers.h"
+
+int main(int, char**)
+{
+    {
+        const std::any a;
+        assert(a.type() == typeid(void));
+        ASSERT_NOEXCEPT(a.type());
+    }
+    {
+        std::any a = small(1);
+        assert(a.type() == typeid(small));
+    }
+    {
+        std::any a = large(1);
+        assert(a.type() == typeid(large));
+    }
+    {
+        int arr[3];
+        std::any a = arr;
+        assert(a.type() == typeid(int*));  // ensure that it is decayed
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_pointer.pass.cpp
new file mode 100644
index 0000000..2afac84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_pointer.pass.cpp
@@ -0,0 +1,183 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class ValueType>
+// ValueType const* any_cast(any const *) noexcept;
+//
+// template <class ValueType>
+// ValueType * any_cast(any *) noexcept;
+
+#include <any>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "any_helpers.h"
+
+// Test that the operators are properly noexcept.
+void test_cast_is_noexcept() {
+    std::any a;
+    ASSERT_NOEXCEPT(std::any_cast<int>(&a));
+
+    const std::any& ca = a;
+    ASSERT_NOEXCEPT(std::any_cast<int>(&ca));
+}
+
+// Test that the return type of any_cast is correct.
+void test_cast_return_type() {
+    std::any a;
+    ASSERT_SAME_TYPE(decltype(std::any_cast<int>(&a)),       int*);
+    ASSERT_SAME_TYPE(decltype(std::any_cast<int const>(&a)), int const*);
+
+    const std::any& ca = a;
+    ASSERT_SAME_TYPE(decltype(std::any_cast<int>(&ca)),       int const*);
+    ASSERT_SAME_TYPE(decltype(std::any_cast<int const>(&ca)), int const*);
+}
+
+// Test that any_cast handles null pointers.
+void test_cast_nullptr() {
+    std::any *a = nullptr;
+    assert(nullptr == std::any_cast<int>(a));
+    assert(nullptr == std::any_cast<int const>(a));
+
+    const std::any *ca = nullptr;
+    assert(nullptr == std::any_cast<int>(ca));
+    assert(nullptr == std::any_cast<int const>(ca));
+}
+
+// Test casting an empty object.
+void test_cast_empty() {
+    {
+        std::any a;
+        assert(nullptr == std::any_cast<int>(&a));
+        assert(nullptr == std::any_cast<int const>(&a));
+
+        const std::any& ca = a;
+        assert(nullptr == std::any_cast<int>(&ca));
+        assert(nullptr == std::any_cast<int const>(&ca));
+    }
+    // Create as non-empty, then make empty and run test.
+    {
+        std::any a(42);
+        a.reset();
+        assert(nullptr == std::any_cast<int>(&a));
+        assert(nullptr == std::any_cast<int const>(&a));
+
+        const std::any& ca = a;
+        assert(nullptr == std::any_cast<int>(&ca));
+        assert(nullptr == std::any_cast<int const>(&ca));
+    }
+}
+
+template <class Type>
+void test_cast() {
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = Type(42);
+        const std::any& ca = a;
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+
+        // Try a cast to a bad type.
+        // NOTE: Type cannot be an int.
+        assert(std::any_cast<int>(&a) == nullptr);
+        assert(std::any_cast<int const>(&a) == nullptr);
+        assert(std::any_cast<int const volatile>(&a) == nullptr);
+
+        // Try a cast to the right type, but as a pointer.
+        assert(std::any_cast<Type*>(&a) == nullptr);
+        assert(std::any_cast<Type const*>(&a) == nullptr);
+
+        // Check getting a unqualified type from a non-const any.
+        Type* v = std::any_cast<Type>(&a);
+        assert(v != nullptr);
+        assert(v->value == 42);
+
+        // change the stored value and later check for the new value.
+        v->value = 999;
+
+        // Check getting a const qualified type from a non-const any.
+        Type const* cv = std::any_cast<Type const>(&a);
+        assert(cv != nullptr);
+        assert(cv == v);
+        assert(cv->value == 999);
+
+        // Check getting a unqualified type from a const any.
+        cv = std::any_cast<Type>(&ca);
+        assert(cv != nullptr);
+        assert(cv == v);
+        assert(cv->value == 999);
+
+        // Check getting a const-qualified type from a const any.
+        cv = std::any_cast<Type const>(&ca);
+        assert(cv != nullptr);
+        assert(cv == v);
+        assert(cv->value == 999);
+
+        // Check that no more objects were created, copied or moved.
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+    }
+    assert(Type::count == 0);
+}
+
+void test_cast_non_copyable_type()
+{
+    // Even though 'any' never stores non-copyable types
+    // we still need to support any_cast<NoCopy>(ptr)
+    struct NoCopy { NoCopy(NoCopy const&) = delete; };
+    std::any a(42);
+    std::any const& ca = a;
+    assert(std::any_cast<NoCopy>(&a) == nullptr);
+    assert(std::any_cast<NoCopy>(&ca) == nullptr);
+}
+
+void test_cast_array() {
+    int arr[3];
+    std::any a(arr);
+    RTTI_ASSERT(a.type() == typeid(int*)); // contained value is decayed
+    // We can't get an array out
+    int (*p)[3] = std::any_cast<int[3]>(&a);
+    assert(p == nullptr);
+}
+
+void test_fn() {}
+
+void test_cast_function_pointer() {
+    using T = void(*)();
+    std::any a(test_fn);
+    // An any can never store a function type, but we should at least be able
+    // to ask.
+    assert(std::any_cast<void()>(&a) == nullptr);
+    T fn_ptr = std::any_cast<T>(a);
+    assert(fn_ptr == test_fn);
+}
+
+int main(int, char**) {
+    test_cast_is_noexcept();
+    test_cast_return_type();
+    test_cast_nullptr();
+    test_cast_empty();
+    test_cast<small>();
+    test_cast<large>();
+    test_cast_non_copyable_type();
+    test_cast_array();
+    test_cast_function_pointer();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_reference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_reference.pass.cpp
new file mode 100644
index 0000000..5c7c29f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_reference.pass.cpp
@@ -0,0 +1,309 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class ValueType>
+// ValueType const any_cast(any const&);
+//
+// template <class ValueType>
+// ValueType any_cast(any &);
+//
+// template <class ValueType>
+// ValueType any_cast(any &&);
+
+#include <any>
+#include <type_traits>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+// Test that the operators are NOT marked noexcept.
+void test_cast_is_not_noexcept() {
+    std::any a;
+    static_assert(!noexcept(std::any_cast<int>(static_cast<std::any&>(a))), "");
+    static_assert(!noexcept(std::any_cast<int>(static_cast<std::any const&>(a))), "");
+    static_assert(!noexcept(std::any_cast<int>(static_cast<std::any &&>(a))), "");
+}
+
+// Test that the return type of any_cast is correct.
+void test_cast_return_type() {
+    std::any a;
+    static_assert(std::is_same<decltype(std::any_cast<int>(a)), int>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const>(a)), int>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int&>(a)), int&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const&>(a)), int const&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int&&>(a)), int&&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const&&>(a)), int const&&>::value, "");
+
+    static_assert(std::is_same<decltype(std::any_cast<int>(std::move(a))), int>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const>(std::move(a))), int>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int&>(std::move(a))), int&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const&>(std::move(a))), int const&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int&&>(std::move(a))), int&&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const&&>(std::move(a))), int const&&>::value, "");
+
+    const std::any& ca = a;
+    static_assert(std::is_same<decltype(std::any_cast<int>(ca)), int>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const>(ca)), int>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const&>(ca)), int const&>::value, "");
+    static_assert(std::is_same<decltype(std::any_cast<int const&&>(ca)), int const&&>::value, "");
+}
+
+template <class Type, class ConstT = Type>
+void checkThrows(std::any& a)
+{
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+    try {
+        TEST_IGNORE_NODISCARD std::any_cast<Type>(a);
+        assert(false);
+    } catch (const std::bad_any_cast&) {
+        // do nothing
+    } catch (...) {
+        assert(false);
+    }
+
+    try {
+        TEST_IGNORE_NODISCARD std::any_cast<ConstT>(static_cast<const std::any&>(a));
+        assert(false);
+    } catch (const std::bad_any_cast&) {
+        // do nothing
+    } catch (...) {
+        assert(false);
+    }
+
+    try {
+        using RefType = typename std::conditional<
+            std::is_lvalue_reference<Type>::value,
+            typename std::remove_reference<Type>::type&&,
+            Type
+        >::type;
+        TEST_IGNORE_NODISCARD std::any_cast<RefType>(static_cast<std::any&&>(a));
+        assert(false);
+    } catch (const std::bad_any_cast&) {
+            // do nothing
+    } catch (...) {
+        assert(false);
+    }
+#else
+    (TEST_IGNORE_NODISCARD a);
+#endif
+}
+
+void test_cast_empty() {
+    // None of these operations should allocate.
+    DisableAllocationGuard g; (TEST_IGNORE_NODISCARD g);
+    std::any a;
+    checkThrows<int>(a);
+}
+
+template <class Type>
+void test_cast_to_reference() {
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = Type(42);
+        const std::any& ca = a;
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+
+        // Try a cast to a bad type.
+        // NOTE: Type cannot be an int.
+        checkThrows<int>(a);
+        checkThrows<int&, int const&>(a);
+        checkThrows<Type*, Type const*>(a);
+        checkThrows<Type const*>(a);
+
+        // Check getting a type by reference from a non-const lvalue any.
+        {
+            Type& v = std::any_cast<Type&>(a);
+            assert(v.value == 42);
+
+            Type const &cv = std::any_cast<Type const&>(a);
+            assert(&cv == &v);
+        }
+        // Check getting a type by reference from a const lvalue any.
+        {
+            Type const& v = std::any_cast<Type const&>(ca);
+            assert(v.value == 42);
+
+            Type const &cv = std::any_cast<Type const&>(ca);
+            assert(&cv == &v);
+        }
+        // Check getting a type by reference from a const rvalue any.
+        {
+            Type const& v = std::any_cast<Type const&>(std::move(ca));
+            assert(v.value == 42);
+
+            Type const &cv = std::any_cast<Type const&>(std::move(ca));
+            assert(&cv == &v);
+        }
+        // Check getting a type by reference from a const rvalue any.
+        {
+            Type&& v = std::any_cast<Type&&>(std::move(a));
+            assert(v.value == 42);
+            assert(std::any_cast<Type&>(a).value == 42);
+
+            Type&& cv = std::any_cast<Type&&>(std::move(a));
+            assert(&cv == &v);
+            assert(std::any_cast<Type&>(a).value == 42);
+        }
+        // Check getting a type by reference from a const rvalue any.
+        {
+            Type const&& v = std::any_cast<Type const&&>(std::move(a));
+            assert(v.value == 42);
+            assert(std::any_cast<Type&>(a).value == 42);
+
+            Type const&& cv = std::any_cast<Type const&&>(std::move(a));
+            assert(&cv == &v);
+            assert(std::any_cast<Type&>(a).value == 42);
+        }
+        // Check that the original object hasn't been changed.
+        assertContains<Type>(a, 42);
+
+        // Check that no objects have been created/copied/moved.
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+    }
+    assert(Type::count == 0);
+}
+
+template <class Type>
+void test_cast_to_value() {
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = Type(42);
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 1);
+
+        // Try a cast to a bad type.
+        // NOTE: Type cannot be an int.
+        checkThrows<int>(a);
+        checkThrows<int&, int const&>(a);
+        checkThrows<Type*, Type const*>(a);
+        checkThrows<Type const*>(a);
+
+        Type::reset(); // NOTE: reset does not modify Type::count
+        // Check getting Type by value from a non-const lvalue any.
+        // This should cause the non-const copy constructor to be called.
+        {
+            Type t = std::any_cast<Type>(a);
+
+            assert(Type::count == 2);
+            assert(Type::copied == 1);
+            assert(Type::const_copied == 0);
+            assert(Type::non_const_copied == 1);
+            assert(Type::moved == 0);
+            assert(t.value == 42);
+        }
+        assert(Type::count == 1);
+        Type::reset();
+        // Check getting const Type by value from a non-const lvalue any.
+        // This should cause the const copy constructor to be called.
+        {
+            Type t = std::any_cast<Type const>(a);
+
+            assert(Type::count == 2);
+            assert(Type::copied == 1);
+            assert(Type::const_copied == 0);
+            assert(Type::non_const_copied == 1);
+            assert(Type::moved == 0);
+            assert(t.value == 42);
+        }
+        assert(Type::count == 1);
+        Type::reset();
+        // Check getting Type by value from a non-const lvalue any.
+        // This should cause the const copy constructor to be called.
+        {
+            Type t = std::any_cast<Type>(static_cast<const std::any&>(a));
+
+            assert(Type::count == 2);
+            assert(Type::copied == 1);
+            assert(Type::const_copied == 1);
+            assert(Type::non_const_copied == 0);
+            assert(Type::moved == 0);
+            assert(t.value == 42);
+        }
+        assert(Type::count == 1);
+        Type::reset();
+        // Check getting Type by value from a non-const rvalue any.
+        // This should cause the non-const copy constructor to be called.
+        {
+            Type t = std::any_cast<Type>(static_cast<std::any&&>(a));
+
+            assert(Type::count == 2);
+            assert(Type::moved == 1);
+            assert(Type::copied == 0);
+            assert(Type::const_copied == 0);
+            assert(Type::non_const_copied == 0);
+            assert(t.value == 42);
+            assert(std::any_cast<Type&>(a).value == 0);
+            std::any_cast<Type&>(a).value = 42; // reset the value
+        }
+        assert(Type::count == 1);
+        Type::reset();
+        // Check getting const Type by value from a non-const rvalue any.
+        // This should cause the const copy constructor to be called.
+        {
+            Type t = std::any_cast<Type const>(static_cast<std::any&&>(a));
+
+            assert(Type::count == 2);
+            assert(Type::copied == 0);
+            assert(Type::const_copied == 0);
+            assert(Type::non_const_copied == 0);
+            assert(Type::moved == 1);
+            assert(t.value == 42);
+            assert(std::any_cast<Type&>(a).value == 0);
+            std::any_cast<Type&>(a).value = 42; // reset the value
+        }
+        assert(Type::count == 1);
+        Type::reset();
+        // Check getting Type by value from a const rvalue any.
+        // This should cause the const copy constructor to be called.
+        {
+            Type t = std::any_cast<Type>(static_cast<const std::any&&>(a));
+
+            assert(Type::count == 2);
+            assert(Type::copied == 1);
+            assert(Type::const_copied == 1);
+            assert(Type::non_const_copied == 0);
+            assert(Type::moved == 0);
+            assert(t.value == 42);
+            assert(std::any_cast<Type&>(a).value == 42);
+        }
+        // Ensure we still only have 1 Type object alive.
+        assert(Type::count == 1);
+
+        // Check that the original object hasn't been changed.
+        assertContains<Type>(a, 42);
+    }
+    assert(Type::count == 0);
+}
+
+int main(int, char**) {
+    test_cast_is_not_noexcept();
+    test_cast_return_type();
+    test_cast_empty();
+    test_cast_to_reference<small>();
+    test_cast_to_reference<large>();
+    test_cast_to_value<small>();
+    test_cast_to_value<large>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_request_invalid_value_category.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_request_invalid_value_category.fail.cpp
new file mode 100644
index 0000000..2dc8bd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/any_cast_request_invalid_value_category.fail.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <any>
+
+// template <class ValueType>
+// ValueType any_cast(any &&);
+
+// Try and use the rvalue any_cast to cast to an lvalue reference
+
+#include <any>
+
+struct TestType {};
+
+void test_const_lvalue_cast_request_non_const_lvalue()
+{
+    const std::any a;
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    // expected-error@any:* {{drops 'const' qualifier}}
+    std::any_cast<TestType &>(a); // expected-note {{requested here}}
+
+    const std::any a2(42);
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    // expected-error@any:* {{drops 'const' qualifier}}
+    std::any_cast<int&>(a2); // expected-note {{requested here}}
+}
+
+void test_lvalue_any_cast_request_rvalue()
+{
+    std::any a;
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be an lvalue reference or a CopyConstructible type}}
+    std::any_cast<TestType &&>(a); // expected-note {{requested here}}
+
+    std::any a2(42);
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be an lvalue reference or a CopyConstructible type}}
+    std::any_cast<int&&>(a2); // expected-note {{requested here}}
+}
+
+void test_rvalue_any_cast_request_lvalue()
+{
+    std::any a;
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be an rvalue reference or a CopyConstructible type}}
+    // expected-error@any:* {{non-const lvalue reference to type 'TestType' cannot bind to a temporary}}
+    std::any_cast<TestType &>(std::move(a)); // expected-note {{requested here}}
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be an rvalue reference or a CopyConstructible type}}
+    // expected-error@any:* {{non-const lvalue reference to type 'int' cannot bind to a temporary}}
+    std::any_cast<int&>(42);
+}
+
+int main(int, char**)
+{
+    test_const_lvalue_cast_request_non_const_lvalue();
+    test_lvalue_any_cast_request_rvalue();
+    test_rvalue_any_cast_request_lvalue();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/const_correctness.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/const_correctness.verify.cpp
new file mode 100644
index 0000000..a066c6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/const_correctness.verify.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <any>
+
+// template <class ValueType>
+// ValueType any_cast(any const &);
+
+// Try and cast away const.
+
+// This test only checks that we static_assert in any_cast when the
+// constraints are not respected, however Clang will sometimes emit
+// additional errors while trying to instantiate the rest of any_cast
+// following the static_assert. We ignore unexpected errors in
+// clang-verify to make the test more robust to changes in Clang.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error
+
+#include <any>
+
+struct TestType {};
+struct TestType2 {};
+
+int main(int, char**)
+{
+    std::any a;
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    std::any_cast<TestType &>(static_cast<std::any const&>(a)); // expected-note {{requested here}}
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    std::any_cast<TestType &&>(static_cast<std::any const&>(a)); // expected-note {{requested here}}
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    std::any_cast<TestType2 &>(static_cast<std::any const&&>(a)); // expected-note {{requested here}}
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    std::any_cast<TestType2 &&>(static_cast<std::any const&&>(a)); // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/not_copy_constructible.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/not_copy_constructible.verify.cpp
new file mode 100644
index 0000000..a3b3b3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/not_copy_constructible.verify.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <any>
+
+// template <class ValueType>
+// ValueType const any_cast(any const&);
+//
+// template <class ValueType>
+// ValueType any_cast(any &);
+//
+// template <class ValueType>
+// ValueType any_cast(any &&);
+
+// Test instantiating the any_cast with a non-copyable type.
+
+// This test only checks that we static_assert in any_cast when the
+// constraints are not respected, however Clang will sometimes emit
+// additional errors while trying to instantiate the rest of any_cast
+// following the static_assert. We ignore unexpected errors in
+// clang-verify to make the test more robust to changes in Clang.
+// ADDITIONAL_COMPILE_FLAGS: -Xclang -verify-ignore-unexpected=error
+
+#include <any>
+
+struct no_copy
+{
+    no_copy() {}
+    no_copy(no_copy &&) {}
+    no_copy(no_copy const &) = delete;
+};
+
+struct no_move {
+  no_move() {}
+  no_move(no_move&&) = delete;
+  no_move(no_move const&) {}
+};
+
+int main(int, char**) {
+    std::any a;
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be an lvalue reference or a CopyConstructible type}}
+    std::any_cast<no_copy>(static_cast<std::any&>(a)); // expected-note {{requested here}}
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be a const lvalue reference or a CopyConstructible type}}
+    std::any_cast<no_copy>(static_cast<std::any const&>(a)); // expected-note {{requested here}}
+
+    std::any_cast<no_copy>(static_cast<std::any &&>(a)); // OK
+
+    // expected-error-re@any:* {{{{(static_assert|static assertion)}} failed{{.*}}ValueType is required to be an rvalue reference or a CopyConstructible type}}
+    std::any_cast<no_move>(static_cast<std::any &&>(a));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/reference_types.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/reference_types.fail.cpp
new file mode 100644
index 0000000..4b3ce4d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/any.cast/reference_types.fail.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <any>
+
+// template <class ValueType>
+// ValueType const* any_cast(any const *) noexcept;
+//
+// template <class ValueType>
+// ValueType * any_cast(any *) noexcept;
+
+#include <any>
+
+int main(int, char**)
+{
+    std::any a = 1;
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int &>(&a); // expected-note {{requested here}}
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int &&>(&a); // expected-note {{requested here}}
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int const &>(&a); // expected-note {{requested here}}
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int const&&>(&a); // expected-note {{requested here}}
+
+    const std::any& a2 = a;
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int &>(&a2); // expected-note {{requested here}}
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int &&>(&a2); // expected-note {{requested here}}
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int const &>(&a2); // expected-note {{requested here}}
+
+    // expected-error-re@any:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}_ValueType may not be a reference.}}
+    std::any_cast<int const &&>(&a2); // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/make_any.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/make_any.pass.cpp
new file mode 100644
index 0000000..987b387
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/make_any.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// template <class T, class ...Args> any make_any(Args&&...);
+// template <class T, class U, class ...Args>
+// any make_any(initializer_list<U>, Args&&...);
+
+#include <any>
+#include <cassert>
+
+#include "any_helpers.h"
+#include "count_new.h"
+#include "test_macros.h"
+
+template <class Type>
+void test_make_any_type() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = std::make_any<Type>();
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 0);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = std::make_any<Type>(101);
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 101);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+    {
+        std::any a = std::make_any<Type>(-1, 42, -1);
+
+        assert(Type::count == 1);
+        assert(Type::copied == 0);
+        assert(Type::moved == 0);
+        assertContains<Type>(a, 42);
+    }
+    assert(Type::count == 0);
+    Type::reset();
+}
+
+template <class Type>
+void test_make_any_type_tracked() {
+    // constructing from a small type should perform no allocations.
+    DisableAllocationGuard g(isSmallType<Type>()); ((void)g);
+    {
+        std::any a = std::make_any<Type>();
+        assertArgsMatch<Type>(a);
+    }
+    {
+        std::any a = std::make_any<Type>(-1, 42, -1);
+        assertArgsMatch<Type, int, int, int>(a);
+    }
+    // initializer_list constructor tests
+    {
+        std::any a = std::make_any<Type>({-1, 42, -1});
+        assertArgsMatch<Type, std::initializer_list<int>>(a);
+    }
+    {
+        int x = 42;
+        std::any a  = std::make_any<Type>({-1, 42, -1}, x);
+        assertArgsMatch<Type, std::initializer_list<int>, int&>(a);
+    }
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+struct SmallThrows {
+  SmallThrows(int) { throw 42; }
+  SmallThrows(std::initializer_list<int>, int) { throw 42; }
+};
+static_assert(IsSmallObject<SmallThrows>::value, "");
+
+struct LargeThrows {
+  LargeThrows(int) { throw 42; }
+  LargeThrows(std::initializer_list<int>, int) { throw 42; }
+  int data[sizeof(std::any)];
+};
+static_assert(!IsSmallObject<LargeThrows>::value, "");
+
+template <class Type>
+void test_make_any_throws()
+{
+    {
+        try {
+            TEST_IGNORE_NODISCARD std::make_any<Type>(101);
+            assert(false);
+        } catch (int const&) {
+        }
+    }
+    {
+        try {
+            TEST_IGNORE_NODISCARD std::make_any<Type>({1, 2, 3}, 101);
+            assert(false);
+        } catch (int const&) {
+        }
+    }
+}
+
+#endif
+
+int main(int, char**) {
+    test_make_any_type<small>();
+    test_make_any_type<large>();
+    test_make_any_type<small_throws_on_copy>();
+    test_make_any_type<large_throws_on_copy>();
+    test_make_any_type<throws_on_move>();
+    test_make_any_type_tracked<small_tracked_t>();
+    test_make_any_type_tracked<large_tracked_t>();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    test_make_any_throws<SmallThrows>();
+    test_make_any_throws<LargeThrows>();
+
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/swap.pass.cpp
new file mode 100644
index 0000000..d372b71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/any/any.nonmembers/swap.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_any_cast is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <any>
+
+// void swap(any &, any &) noexcept
+
+// swap(...) just wraps any::swap(...). That function is tested elsewhere.
+
+#include <any>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+
+    { // test noexcept
+        std::any a;
+        static_assert(noexcept(swap(a, a)), "swap(any&, any&) must be noexcept");
+    }
+    {
+        std::any a1 = 1;
+        std::any a2 = 2;
+
+        swap(a1, a2);
+
+        assert(std::any_cast<int>(a1) == 2);
+        assert(std::any_cast<int>(a2) == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.bool.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.bool.fail.cpp
new file mode 100644
index 0000000..5fa62a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.bool.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <charconv>
+
+// In
+//
+// from_chars_result from_chars(const char* first, const char* last,
+//                              Integral& value, int base = 10)
+//
+// Integral cannot be bool.
+
+#include <charconv>
+
+int main(int, char**)
+{
+    using std::from_chars;
+    char buf[] = "01001";
+    bool lv;
+
+    from_chars(buf, buf + sizeof(buf), lv);      // expected-error {{call to deleted function}}
+    from_chars(buf, buf + sizeof(buf), lv, 16);  // expected-error {{call to deleted function}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.pass.cpp
new file mode 100644
index 0000000..c88bf11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <charconv>
+
+// constexpr from_chars_result from_chars(const char* first, const char* last,
+//                                        Integral& value, int base = 10)
+
+#include <charconv>
+#include "test_macros.h"
+#include "charconv_test_helpers.h"
+
+template <typename T>
+struct test_basics
+{
+    TEST_CONSTEXPR_CXX23 void operator()()
+    {
+        std::from_chars_result r;
+        T x;
+
+        {
+            char s[] = "001x";
+
+            // the expected form of the subject sequence is a sequence of
+            // letters and digits representing an integer with the radix
+            // specified by base (C11 7.22.1.4/3)
+            r = std::from_chars(s, s + sizeof(s), x);
+            assert(r.ec == std::errc{});
+            assert(r.ptr == s + 3);
+            assert(x == 1);
+        }
+
+        {
+            // The string has more characters than valid in an 128-bit value.
+            char s[] = "0X7BAtSGHDkEIXZgQRfYChLpOzRnM ";
+
+            // The letters from a (or A) through z (or Z) are ascribed the
+            // values 10 through 35; (C11 7.22.1.4/3)
+            r = std::from_chars(s, s + sizeof(s), x, 36);
+            assert(r.ec == std::errc::result_out_of_range);
+            // The member ptr of the return value points to the first character
+            // not matching the pattern
+            assert(r.ptr == s + sizeof(s) - 2);
+            assert(x == 1);
+
+            // no "0x" or "0X" prefix shall appear if the value of base is 16
+            r = std::from_chars(s, s + sizeof(s), x, 16);
+            assert(r.ec == std::errc{});
+            assert(r.ptr == s + 1);
+            assert(x == 0);
+
+            // only letters and digits whose ascribed values are less than that
+            // of base are permitted. (C11 7.22.1.4/3)
+            r = std::from_chars(s + 2, s + sizeof(s), x, 12);
+            // If the parsed value is not in the range representable by the type
+            // of value,
+            if (!fits_in<T>(1150))
+            {
+                // value is unmodified and
+                assert(x == 0);
+                // the member ec of the return value is equal to
+                // errc::result_out_of_range
+                assert(r.ec == std::errc::result_out_of_range);
+            }
+            else
+            {
+                // Otherwise, value is set to the parsed value,
+                assert(x == 1150);
+                // and the member ec is value-initialized.
+                assert(r.ec == std::errc{});
+            }
+            assert(r.ptr == s + 5);
+        }
+    }
+};
+
+template <typename T>
+struct test_signed
+{
+    TEST_CONSTEXPR_CXX23 void operator()()
+    {
+        std::from_chars_result r;
+        T x = 42;
+
+        {
+            // If the pattern allows for an optional sign,
+            // but the string has no digit characters following the sign,
+            char s[] = "- 9+12";
+            r = std::from_chars(s, s + sizeof(s), x);
+            // value is unmodified,
+            assert(x == 42);
+            // no characters match the pattern.
+            assert(r.ptr == s);
+            assert(r.ec == std::errc::invalid_argument);
+        }
+
+        {
+            char s[] = "9+12";
+            r = std::from_chars(s, s + sizeof(s), x);
+            assert(r.ec == std::errc{});
+            // The member ptr of the return value points to the first character
+            // not matching the pattern,
+            assert(r.ptr == s + 1);
+            assert(x == 9);
+        }
+
+        {
+            char s[] = "12";
+            r = std::from_chars(s, s + 2, x);
+            assert(r.ec == std::errc{});
+            // or has the value last if all characters match.
+            assert(r.ptr == s + 2);
+            assert(x == 12);
+        }
+
+        {
+            // '-' is the only sign that may appear
+            char s[] = "+30";
+            // If no characters match the pattern,
+            r = std::from_chars(s, s + sizeof(s), x);
+            // value is unmodified,
+            assert(x == 12);
+            // the member ptr of the return value is first and
+            assert(r.ptr == s);
+            // the member ec is equal to errc::invalid_argument.
+            assert(r.ec == std::errc::invalid_argument);
+        }
+    }
+};
+
+TEST_CONSTEXPR_CXX23 bool test()
+{
+    run<test_basics>(integrals);
+    run<test_signed>(all_signed);
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 20
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.roundtrip.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.roundtrip.pass.cpp
new file mode 100644
index 0000000..5b5ea7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.from.chars/integral.roundtrip.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=12712420
+
+// <charconv>
+
+// constexpr from_chars_result from_chars(const char* first, const char* last,
+//                                        Integral& value, int base = 10)
+
+#include <charconv>
+#include "test_macros.h"
+#include "charconv_test_helpers.h"
+
+template <typename T>
+struct test_basics : roundtrip_test_base<T>
+{
+    using roundtrip_test_base<T>::test;
+
+    TEST_CONSTEXPR_CXX23 void operator()()
+    {
+        test(0);
+        test(42);
+        test(32768);
+        test(0, 10);
+        test(42, 10);
+        test(32768, 10);
+        test(0xf, 16);
+        test(0xdeadbeaf, 16);
+        test(0755, 8);
+
+        for (int b = 2; b < 37; ++b)
+        {
+            using xl = std::numeric_limits<T>;
+
+            test(1, b);
+            test(-1, b);
+            test(xl::lowest(), b);
+            test((xl::max)(), b);
+            test((xl::max)() / 2, b);
+        }
+    }
+};
+
+template <typename T>
+struct test_signed : roundtrip_test_base<T>
+{
+    using roundtrip_test_base<T>::test;
+
+    TEST_CONSTEXPR_CXX23 void operator()()
+    {
+        test(-1);
+        test(-12);
+        test(-1, 10);
+        test(-12, 10);
+        test(-21734634, 10);
+        test(-2647, 2);
+        test(-0xcc1, 16);
+
+        for (int b = 2; b < 37; ++b)
+        {
+            using xl = std::numeric_limits<T>;
+
+            test(0, b);
+            test(xl::lowest(), b);
+            test((xl::max)(), b);
+        }
+    }
+};
+
+TEST_CONSTEXPR_CXX23 bool test()
+{
+    run<test_basics>(integrals);
+    run<test_signed>(all_signed);
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 20
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_1.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_1.hpp
new file mode 100644
index 0000000..8ad99da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_1.hpp
@@ -0,0 +1,300 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_1_HPP
+#define DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_1_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_fixed_precision_to_chars_test_cases_1[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0, chars_format::fixed, 4, "0.0000"},
+    {-0.0, chars_format::fixed, 4, "-0.0000"},
+    {double_inf, chars_format::fixed, 4, "inf"},
+    {-double_inf, chars_format::fixed, 4, "-inf"},
+    {double_nan, chars_format::fixed, 4, "nan"},
+    {-double_nan, chars_format::fixed, 4, "-nan(ind)"},
+    {double_nan_payload, chars_format::fixed, 4, "nan"},
+    {-double_nan_payload, chars_format::fixed, 4, "-nan"},
+    {1.729, chars_format::fixed, 4, "1.7290"},
+    {-1.729, chars_format::fixed, 4, "-1.7290"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest Basic
+    {0x1.000000001869fp+211, chars_format::fixed, 0,
+        "3291009114715486435425664845573426149758869524108446525879746560"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest Zero
+    {0.0, chars_format::fixed, 4, "0.0000"},
+    {0.0, chars_format::fixed, 3, "0.000"},
+    {0.0, chars_format::fixed, 2, "0.00"},
+    {0.0, chars_format::fixed, 1, "0.0"},
+    {0.0, chars_format::fixed, 0, "0"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest MinMax
+    {0x0.0000000000001p-1022, chars_format::fixed, 1074,
+        "0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "000000000000000000000000000000000000000000000000000000049406564584124654417656879286822137"
+        "236505980261432476442558568250067550727020875186529983636163599237979656469544571773092665"
+        "671035593979639877479601078187812630071319031140452784581716784898210368871863605699873072"
+        "305000638740915356498438731247339727316961514003171538539807412623856559117102665855668676"
+        "818703956031062493194527159149245532930545654440112748012970999954193198940908041656332452"
+        "475714786901472678015935523861155013480352649347201937902681071074917033322268447533357208"
+        "324319360923828934583680601060115061698097530783422773183292479049825247307763759272478746"
+        "560847782037344696995336470179726777175851256605511991315048911014510378627381672509558373"
+        "89733598993664809941164205702637090279242767544565229087538682506419718265533447265625"},
+
+    {0x1.fffffffffffffp+1023, chars_format::fixed, 0,
+        "179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558"
+        "632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245"
+        "490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168"
+        "738177180919299881250404026184124858368"},
+
+    // Test more corner cases.
+    {0x0.fffffffffffffp-1022, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585"
+        "0720088902458687608585988765042311224095946549352480256244000922823569517877588880375915526423097809504343"
+        "1208587738715835729182199302029437922422355981982750124204178896957131179108226104397197960400045489739193"
+        "8079198936081525613113376149842043271751033627391549782731594143828136275113838604094249464942286316695429"
+        "1050802018159266421349966065178030950759130587198464239060686371020051087232827846788436319445158661350412"
+        "2347901479236958520832159762106637540161373658304419360371477835530668283453563400507407304013560296804637"
+        "5918583163124224521599262546494300836851861719422417646455137135420132217031370496583210154654068035397417"
+        "9060225895030235019375197730309457631732108525072993050897615825191597207572324554347709124613174935802817"
+        "34466552734375"}, // max subnormal
+    {0x1p-1022, chars_format::fixed, 1022,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585"
+        "0720138309023271733240406421921598046233183055332741688720443481391819585428315901251102056406733973103581"
+        "1005152434161553460108856012385377718821130777993532002330479610147442583636071921565046942503734208375250"
+        "8066506166581589487204911799685916396485006359087701183048747997808877537499494515804516050509153998565824"
+        "7081864511353793580499211598108576605199243335211435239014879569960959128889160299264151106346631339366347"
+        "7586513029371762047325631781485664350872122828637642044846811407613911477062801689853244110024161447421618"
+        "5671661505401542850847167529019031613227788967297073731233340869889831750678388469260927739779728586596549"
+        "41091369095406136467568702398678315290680984617210924625396728515625"}, // min normal
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest RoundToEven
+    {0.125, chars_format::fixed, 3, "0.125"},
+    {0.125, chars_format::fixed, 2, "0.12"},
+    {0.375, chars_format::fixed, 3, "0.375"},
+    {0.375, chars_format::fixed, 2, "0.38"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest RoundToEvenInteger
+    {2.5, chars_format::fixed, 1, "2.5"},
+    {2.5, chars_format::fixed, 0, "2"},
+    {3.5, chars_format::fixed, 1, "3.5"},
+    {3.5, chars_format::fixed, 0, "4"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest NonRoundToEvenScenarios
+    {0.748046875, chars_format::fixed, 3, "0.748"},
+    {0.748046875, chars_format::fixed, 2, "0.75"},
+    {0.748046875, chars_format::fixed, 1, "0.7"}, // 0.75 would round to "0.8", but this is smaller
+
+    {0.2509765625, chars_format::fixed, 3, "0.251"},
+    {0.2509765625, chars_format::fixed, 2, "0.25"},
+    {0.2509765625, chars_format::fixed, 1, "0.3"}, // 0.25 would round to "0.2", but this is larger
+
+    {0x1.0000000000001p-2, chars_format::fixed, 54, "0.250000000000000055511151231257827021181583404541015625"},
+    {0x1.0000000000001p-2, chars_format::fixed, 3, "0.250"},
+    {0x1.0000000000001p-2, chars_format::fixed, 2, "0.25"},
+    {0x1.0000000000001p-2, chars_format::fixed, 1, "0.3"}, // 0.25 would round to "0.2", but this is larger (again)
+
+    // More rounding tests.
+    {9.5, chars_format::fixed, 1, "9.5"},
+    {9.5, chars_format::fixed, 0, "10"},
+    {10.5, chars_format::fixed, 1, "10.5"},
+    {10.5, chars_format::fixed, 0, "10"},
+
+    {1.241, chars_format::fixed, 3, "1.241"},
+    {1.241, chars_format::fixed, 1, "1.2"},
+    {1.251, chars_format::fixed, 3, "1.251"},
+    {1.251, chars_format::fixed, 1, "1.3"},
+    {1.261, chars_format::fixed, 3, "1.261"},
+    {1.261, chars_format::fixed, 1, "1.3"},
+    {1.341, chars_format::fixed, 3, "1.341"},
+    {1.341, chars_format::fixed, 1, "1.3"},
+    {1.351, chars_format::fixed, 3, "1.351"},
+    {1.351, chars_format::fixed, 1, "1.4"},
+    {1.361, chars_format::fixed, 3, "1.361"},
+    {1.361, chars_format::fixed, 1, "1.4"},
+
+    {2.41, chars_format::fixed, 2, "2.41"},
+    {2.41, chars_format::fixed, 0, "2"},
+    {2.51, chars_format::fixed, 2, "2.51"},
+    {2.51, chars_format::fixed, 0, "3"},
+    {2.61, chars_format::fixed, 2, "2.61"},
+    {2.61, chars_format::fixed, 0, "3"},
+    {3.41, chars_format::fixed, 2, "3.41"},
+    {3.41, chars_format::fixed, 0, "3"},
+    {3.51, chars_format::fixed, 2, "3.51"},
+    {3.51, chars_format::fixed, 0, "4"},
+    {3.61, chars_format::fixed, 2, "3.61"},
+    {3.61, chars_format::fixed, 0, "4"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest VaryingPrecision
+    {1729.142857142857, chars_format::fixed, 47, "1729.14285714285711037518922239542007446289062500000"},
+    {1729.142857142857, chars_format::fixed, 46, "1729.1428571428571103751892223954200744628906250000"},
+    {1729.142857142857, chars_format::fixed, 45, "1729.142857142857110375189222395420074462890625000"},
+    {1729.142857142857, chars_format::fixed, 44, "1729.14285714285711037518922239542007446289062500"},
+    {1729.142857142857, chars_format::fixed, 43, "1729.1428571428571103751892223954200744628906250"},
+    {1729.142857142857, chars_format::fixed, 42, "1729.142857142857110375189222395420074462890625"},
+    {1729.142857142857, chars_format::fixed, 41, "1729.14285714285711037518922239542007446289062"},
+    {1729.142857142857, chars_format::fixed, 40, "1729.1428571428571103751892223954200744628906"},
+    {1729.142857142857, chars_format::fixed, 39, "1729.142857142857110375189222395420074462891"},
+    {1729.142857142857, chars_format::fixed, 38, "1729.14285714285711037518922239542007446289"},
+    {1729.142857142857, chars_format::fixed, 37, "1729.1428571428571103751892223954200744629"},
+    {1729.142857142857, chars_format::fixed, 36, "1729.142857142857110375189222395420074463"},
+    {1729.142857142857, chars_format::fixed, 35, "1729.14285714285711037518922239542007446"},
+    {1729.142857142857, chars_format::fixed, 34, "1729.1428571428571103751892223954200745"},
+    {1729.142857142857, chars_format::fixed, 33, "1729.142857142857110375189222395420074"},
+    {1729.142857142857, chars_format::fixed, 32, "1729.14285714285711037518922239542007"},
+    {1729.142857142857, chars_format::fixed, 31, "1729.1428571428571103751892223954201"},
+    {1729.142857142857, chars_format::fixed, 30, "1729.142857142857110375189222395420"},
+    {1729.142857142857, chars_format::fixed, 29, "1729.14285714285711037518922239542"},
+    {1729.142857142857, chars_format::fixed, 28, "1729.1428571428571103751892223954"},
+    {1729.142857142857, chars_format::fixed, 27, "1729.142857142857110375189222395"},
+    {1729.142857142857, chars_format::fixed, 26, "1729.14285714285711037518922240"},
+    {1729.142857142857, chars_format::fixed, 25, "1729.1428571428571103751892224"},
+    {1729.142857142857, chars_format::fixed, 24, "1729.142857142857110375189222"},
+    {1729.142857142857, chars_format::fixed, 23, "1729.14285714285711037518922"},
+    {1729.142857142857, chars_format::fixed, 22, "1729.1428571428571103751892"},
+    {1729.142857142857, chars_format::fixed, 21, "1729.142857142857110375189"},
+    {1729.142857142857, chars_format::fixed, 20, "1729.14285714285711037519"},
+    {1729.142857142857, chars_format::fixed, 19, "1729.1428571428571103752"},
+    {1729.142857142857, chars_format::fixed, 18, "1729.142857142857110375"},
+    {1729.142857142857, chars_format::fixed, 17, "1729.14285714285711038"},
+    {1729.142857142857, chars_format::fixed, 16, "1729.1428571428571104"},
+    {1729.142857142857, chars_format::fixed, 15, "1729.142857142857110"},
+    {1729.142857142857, chars_format::fixed, 14, "1729.14285714285711"},
+    {1729.142857142857, chars_format::fixed, 13, "1729.1428571428571"},
+    {1729.142857142857, chars_format::fixed, 12, "1729.142857142857"},
+    {1729.142857142857, chars_format::fixed, 11, "1729.14285714286"},
+    {1729.142857142857, chars_format::fixed, 10, "1729.1428571429"},
+    {1729.142857142857, chars_format::fixed, 9, "1729.142857143"},
+    {1729.142857142857, chars_format::fixed, 8, "1729.14285714"},
+    {1729.142857142857, chars_format::fixed, 7, "1729.1428571"},
+    {1729.142857142857, chars_format::fixed, 6, "1729.142857"},
+    {1729.142857142857, chars_format::fixed, 5, "1729.14286"},
+    {1729.142857142857, chars_format::fixed, 4, "1729.1429"},
+    {1729.142857142857, chars_format::fixed, 3, "1729.143"},
+    {1729.142857142857, chars_format::fixed, 2, "1729.14"},
+    {1729.142857142857, chars_format::fixed, 1, "1729.1"},
+    {1729.142857142857, chars_format::fixed, 0, "1729"},
+
+    // Negative precision requests 6 digits of precision.
+    {1729.142857142857, chars_format::fixed, -1, "1729.142857"},
+    {1729.142857142857, chars_format::fixed, -2, "1729.142857"},
+    {1729.142857142857, chars_format::fixed, -3, "1729.142857"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest Carrying
+    {0.0009, chars_format::fixed, 4, "0.0009"},
+    {0.0009, chars_format::fixed, 3, "0.001"},
+    {0.0029, chars_format::fixed, 4, "0.0029"},
+    {0.0029, chars_format::fixed, 3, "0.003"},
+    {0.0099, chars_format::fixed, 4, "0.0099"},
+    {0.0099, chars_format::fixed, 3, "0.010"},
+    {0.0299, chars_format::fixed, 4, "0.0299"},
+    {0.0299, chars_format::fixed, 3, "0.030"},
+    {0.0999, chars_format::fixed, 4, "0.0999"},
+    {0.0999, chars_format::fixed, 3, "0.100"},
+    {0.2999, chars_format::fixed, 4, "0.2999"},
+    {0.2999, chars_format::fixed, 3, "0.300"},
+    {0.9999, chars_format::fixed, 4, "0.9999"},
+    {0.9999, chars_format::fixed, 3, "1.000"},
+    {2.9999, chars_format::fixed, 4, "2.9999"},
+    {2.9999, chars_format::fixed, 3, "3.000"},
+    {9.9999, chars_format::fixed, 4, "9.9999"},
+    {9.9999, chars_format::fixed, 3, "10.000"},
+    {29.9999, chars_format::fixed, 4, "29.9999"},
+    {29.9999, chars_format::fixed, 3, "30.000"},
+    {99.9999, chars_format::fixed, 4, "99.9999"},
+    {99.9999, chars_format::fixed, 3, "100.000"},
+    {299.9999, chars_format::fixed, 4, "299.9999"},
+    {299.9999, chars_format::fixed, 3, "300.000"},
+
+    {0.09, chars_format::fixed, 2, "0.09"},
+    {0.09, chars_format::fixed, 1, "0.1"},
+    {0.29, chars_format::fixed, 2, "0.29"},
+    {0.29, chars_format::fixed, 1, "0.3"},
+    {0.99, chars_format::fixed, 2, "0.99"},
+    {0.99, chars_format::fixed, 1, "1.0"},
+    {2.99, chars_format::fixed, 2, "2.99"},
+    {2.99, chars_format::fixed, 1, "3.0"},
+    {9.99, chars_format::fixed, 2, "9.99"},
+    {9.99, chars_format::fixed, 1, "10.0"},
+    {29.99, chars_format::fixed, 2, "29.99"},
+    {29.99, chars_format::fixed, 1, "30.0"},
+    {99.99, chars_format::fixed, 2, "99.99"},
+    {99.99, chars_format::fixed, 1, "100.0"},
+    {299.99, chars_format::fixed, 2, "299.99"},
+    {299.99, chars_format::fixed, 1, "300.0"},
+
+    {0.9, chars_format::fixed, 1, "0.9"},
+    {0.9, chars_format::fixed, 0, "1"},
+    {2.9, chars_format::fixed, 1, "2.9"},
+    {2.9, chars_format::fixed, 0, "3"},
+    {9.9, chars_format::fixed, 1, "9.9"},
+    {9.9, chars_format::fixed, 0, "10"},
+    {29.9, chars_format::fixed, 1, "29.9"},
+    {29.9, chars_format::fixed, 0, "30"},
+    {99.9, chars_format::fixed, 1, "99.9"},
+    {99.9, chars_format::fixed, 0, "100"},
+    {299.9, chars_format::fixed, 1, "299.9"},
+    {299.9, chars_format::fixed, 0, "300"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest RoundingResultZero
+    {0.004, chars_format::fixed, 3, "0.004"},
+    {0.004, chars_format::fixed, 2, "0.00"},
+    {0.4, chars_format::fixed, 1, "0.4"},
+    {0.4, chars_format::fixed, 0, "0"},
+    {0.5, chars_format::fixed, 1, "0.5"},
+    {0.5, chars_format::fixed, 0, "0"},
+
+    // Ryu Printf d2fixed_test.cc D2fixedTest Regression
+    {7.018232e-82, chars_format::fixed, 6, "0.000000"},
+};
+
+#endif // DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_1_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_2.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_2.hpp
new file mode 100644
index 0000000..2bb15d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_2.hpp
@@ -0,0 +1,3477 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_2_HPP
+#define DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_2_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_fixed_precision_to_chars_test_cases_2[] = {
+    // Ryu Printf d2fixed_test.cc D2fixedTest AllPowersOfTen
+    // These values test every power of ten that's within the range of doubles.
+    {1e-323, chars_format::fixed, 1073,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000098813129168249308835313758573644274473011960522864952885117136500135101454041750373059967272327198475"
+        "9593129390891435461853313420711879592797549592021563756252601426380622809055691634335697964207377437272113"
+        "9974614461000127748183071299687746249467945463392302800634307707961482524771311823420533171133735363740791"
+        "2062124986389054318298491065861091308880225496025941999908386397881816083312664904951429573802945356031871"
+        "0477223100269607052986944038758053621421498340666445368950667144166486387218476578691673612021202301233961"
+        "9506156684554636658495809965049461552751854495749312169556407468939399067294035945355435170251321102398263"
+        "0097822029020757254763345019116747794671979873296198823284114052741805584855350891304581750773650128394365"
+        "3106689453125"},
+    {1e-322, chars_format::fixed, 1072,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000988131291682493088353137585736442744730119605228649528851171365001351014540417503730599672723271984759"
+        "5931293908914354618533134207118795927975495920215637562526014263806228090556916343356979642073774372721139"
+        "9746144610001277481830712996877462494679454633923028006343077079614825247713118234205331711337353637407912"
+        "0621249863890543182984910658610913088802254960259419999083863978818160833126649049514295738029453560318710"
+        "4772231002696070529869440387580536214214983406664453689506671441664863872184765786916736120212023012339619"
+        "5061566845546366584958099650494615527518544957493121695564074689393990672940359453554351702513211023982630"
+        "0978220290207572547633450191167477946719798732961988232841140527418055848553508913045817507736501283943653"
+        "106689453125"},
+    {1e-321, chars_format::fixed, 1073,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0009980126045993180192366689615938071721774208012809360241396830786513645246858216787679056694505047046071"
+        "8906068480034981647184655491899838872552508794177939381512744064442903714624855067905494384945121164483513"
+        "7436060561012902566490201268462371196262491802622582864065078504109735001902494165473850284507271737819911"
+        "8274623625294486148147597651970222196902775098620141990747026186063424414579155400094386954097480959218975"
+        "8199533127230312351681347914563415763571332407310982264017381560815125109066134447859034814141432424630157"
+        "0121825140018302508076806469995616827937304070680529125197154362879305796697630480898952195383431342224563"
+        "9880024931096482731097846930791527261869967202916081151695519326922364070390440021762756828138662967830896"
+        "3775634765625"},
+    {1e-320, chars_format::fixed, 1071,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0099998886718268300541337523676528005766688104049139332319738542138136722671490251377536686879595124857670"
+        "8246943582132687395553181760422147911120187125822521327632643497190282764359933947726339777865966519379365"
+        "4309834532129281161268155283999204461560808953010434241919400457020315068567565301579569187340188105680700"
+        "6870486225722970118072958651424404586788201978253303907287034656397876312416883810846728688580700304253500"
+        "2949777472842337622787367223150264878556320754442713378075149896484223865098297635973695365456728848769494"
+        "0230564769292298397759684630055091384876749698303915591084358566671856101564376699700392294336955627042165"
+        "8995893369006341820505159346148768208043631775753209163523421374707251873615102000236731782933929935097694"
+        "39697265625"},
+    {1e-319, chars_format::fixed, 1070,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0999988867182683005413375236765280057666881040491393323197385421381367226714902513775366868795951248576708"
+        "2469435821326873955531817604221479111201871258225213276326434971902827643599339477263397778659665193793654"
+        "3098345321292811612681552839992044615608089530104342419194004570203150685675653015795691873401881056807006"
+        "8704862257229701180729586514244045867882019782533039072870346563978763124168838108467286885807003042535002"
+        "9497774728423376227873672231502648785563207544427133780751498964842238650982976359736953654567288487694940"
+        "2305647692922983977596846300550913848767496983039155910843585666718561015643766997003922943369556270421658"
+        "9958933690063418205051593461487682080436317757532091635234213747072518736151020002367317829339299350976943"
+        "9697265625"},
+    {1e-318, chars_format::fixed, 1073,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "9999987484955998303442587681411374220943283416874456096926739330950172402250479179504041747926784812965558"
+        "4287487604160175017171489462926670704816262174273696519516951145408899245049086406969675750804029375208657"
+        "0958067673928243874998599699608192405548840764435726992574353409992989381527841981377451905152545931810859"
+        "9110747558686066125594356208301549987700423321356332728611852037669447325001045989624298431872975781381900"
+        "5454970384503369331723666353784541477053573784937783176465656792588872897048240176061210157694087178183364"
+        "2562633613784476434464272970558600040426824326140871277992264136125009223731705915394664603946883806614852"
+        "9687158929654939305279279633993568599035157448617115175626251523466992946365550914977760044166643638163805"
+        "0079345703125"},
+    {1e-317, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010"
+        "0000023069253735408389129784751602675844543686685345266696720985206474225156972857665977069218756620453298"
+        "2264570127938903364494864760334526437358946130769310829548413593659926664074401521200304454351359907994741"
+        "9542598430782630372260603945613543429690325839445724126694995661872117602435387548905318808226062363719785"
+        "9200663066444242733391298681807136840324571457602240285981099973517197374979457253670128679434175847866812"
+        "0265538495438103896717079595982495202667985360377499818082568642138458551310116628649611994972675233684585"
+        "4885571164676719332386444653160192733396025005032681034257252564659190838258113071979798794845819719745924"
+        "2018322340080528934937813868610807682359544296115449991188686313782637840938535486734473067826911574229598"
+        "04534912109375"},
+    {1e-316, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000099"
+        "9999983659714433460619209563119592647759254336952145504584997059223491913816093472283838042269385386536792"
+        "3662877802160444990315364051565565391595587327639198904852632370647709618104786126163799632995155486767134"
+        "5489448155325984352148361206916068673233394735976484265364187348817469712425595930501855154426285227845881"
+        "1851318198469791538166759153418640131045150835957547860040033740467433541512910274322712859834395088588442"
+        "6462327203707021334703435862929817973126107752108884758449018560968369545054974839766935919673746583760950"
+        "0090319935380601677624921618978273452080613810953529918681506974243410714346040856409400022829894441463584"
+        "4938668328253396212469776138316207336915493277914002853676578005971864447246977639083276301334990421310067"
+        "17681884765625"},
+    {1e-315, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000999"
+        "9999984816838086980155348601833786944004252887462239343279298267939669340813115785463940012644762356165637"
+        "6018472107941603095933610646723473305152197664424334682905225846048030394631398713141543276262621023579516"
+        "4856403244760035143758219018692306106535865554853296854593335050116920911412927040149351300963455324069998"
+        "6606369464281496859115328132978038273771846603614391600262917001497059540098100100654272959048368919932233"
+        "0339106687474623926514774687435260163393325032088515637916186325933425031377463265706869614769269289460443"
+        "0162434380637971763992931137356926849933919853159267441149680945843205744401462482127152983675926068233239"
+        "4533416326065098006842778911837195061162902589084326771691951138831352849752802727789635639510379405692219"
+        "73419189453125"},
+    {1e-314, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009999"
+        "9999996388074622175516738988975729906454238392563177730222310355101443610783338917264959716398532052454089"
+        "9574415165753184152116076598302552440718301032275692463431160600051238159897524582918979708937276391703335"
+        "8525954139100543059856797136454680439560573743621422746884812063111432901286238136624312766335156286311173"
+        "4156882122398550068601017928572019701038804280182829002491749611793319525949998363969873951188107233370136"
+        "9106901525150649844628162932489682066065497831884824432587863975583979894602347525106206565724496346455373"
+        "0883578833211672627673026321143460828466980275216642665831420661841156044955678739304682592136242335929789"
+        "0480896304182115950572806647047072303636995700787565951845682467426236874811053614853229021264269249513745"
+        "30792236328125"},
+    {1e-313, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000"
+        "0000013287310805879821807546636585886679620431612038734699546109582686175384116193524783693968956688140137"
+        "5540716352977559252087422693381464203581785118767706512437906713702693003503091646357646071476452635669415"
+        "5246848621505494472659507014390677520339710167910378869165274485095070275248037277953394248918430544982129"
+        "7599883717180027845159424818650742664828155549841261024871689316874103301156316092174454298782545011717304"
+        "6307626801641301972775101344275847471365727489181467010353973327923042139632713540407902463255564615170711"
+        "8588866674394044605978168193959339061045730000041082743092410352881259983203805365724543506488083910497021"
+        "9857874056331538133109738980029096933705946944523758930098881700633271540538211594184581088029517559334635"
+        "73455810546875"},
+    {1e-312, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000999999"
+        "9999984653414306424254822495727998400384494798179603049566133420122111551188980872622277349738658390603661"
+        "6017469443438439328094256802746822646621526799644719490000164997455995821447379012072913768453460200785984"
+        "2506564523554753104320463194375155829195183484015334490701283289008478965323405044403142732483702404210110"
+        "7905649692216696974146511587715789684961217254373697248854313571918308886594163564317398627121032083125239"
+        "7360433366008609148270597384621394281525027380815002050113732562980691815499420536041514214523842699856175"
+        "6629431717108491072037966992019198281329518256786859176589492325403501231096999739212282309503857451372825"
+        "3432007519784245448952372271615847645051499635293291066062645927220007028099089604888938254134700400754809"
+        "37957763671875"},
+    {1e-311, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009999999"
+        "9999994753836816616511477927917844470256657499736814793090661876925865714541989788848333087337492396834329"
+        "9564388520721546473722538158536045855411592384479540534380552114130892428057327572232684630845668163768013"
+        "5027566927047722665479238893283177666153753035241799107964294452027013440391018179162227081537627087712294"
+        "7149684401750551218912852475949533812932510787775885488405715316005812990910633000601130631914738865300203"
+        "9320168310490502062186389904351023247382521319149688554563326346056647735821920228452652563270230450412699"
+        "5553552197916865708123384867766175142422964311492560020229534457444110911911051310155975850415556167325647"
+        "9466808241373590371668740244833598142522966162877208895552630351312778658273922385846255167507479200139641"
+        "76177978515625"},
+    {1e-310, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000099999999"
+        "9999996944932750289769196936057731524703811503348409363383061327826907212970624909358517403358560131942537"
+        "5440449902661182468152038295716398350514698640806187221931821854499235685101121539494695290560370356316192"
+        "0262976500977290528883924582675649786271503084114142479960098374250875666295837703332537400943138558993342"
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+        "29092601392444835652130948564826004622078785676810855105701264700211200"},
+    {1e+283, chars_format::fixed, 0,
+        "9999999999999999553953517735361344274271821018911312812290573026184540102343798495987494338396687059809772"
+        "7966329076780975705558651098687533761031476684077544035813096345547962581760843838922021129763927973084950"
+        "24959839786965342632596166187964530344229899589832462449290116390191104"},
+    {1e+284, chars_format::fixed, 0,
+        "1000000000000000079214382508457676541256819191699710934083899342334435758975171027725445345572057645297521"
+        "6283329441806240683821311505209883878195732087635685354312082149188175289466707052058222577470946921779713"
+        "0505057184069381648545374773244373557467226310750742042216461653692645376"},
+    {1e+285, chars_format::fixed, 0,
+        "9999999999999999801591579205204428501931095198528472118000257105616503599825380852240886161861464938442861"
+        "4939722145037261932089543889369794765216645522533405937274641374814720644342089175254062058753036222027386"
+        "3006901551095990707698442841525909542472844588688081080376132618600579072"},
+    {1e+286, chars_format::fixed, 0,
+        "1000000000000000032988611034086967485427088011504507863684758314173802572778608987891478871858632441286011"
+        "7381629402398400588202211517615861824081167237790591132705927077058380451118207922609574937392980048643791"
+        "654301923722148311225012721166820834263125344653917287293299907083743789056"},
+    {1e+287, chars_format::fixed, 0,
+        "1000000000000000075252173524940187193614270804825836385192544397063524343015465710025391076396621199239392"
+        "2091755152714140104196817220558967702128769386220391563888697428719907160465407126676909922607121189796634"
+        "0736882502910990345434353553680702253338428636675464684849307718019341877248"},
+    {1e+288, chars_format::fixed, 0,
+        "1000000000000000007630473539575035660514778335511710750780086664439969510636494954611131549135839186513983"
+        "4555553952208956878605448095849998297252605948732710873996264866061464425509888400169173946264495363952086"
+        "20267012778077787723395914064607119962069483324573977857832138825282954985472"},
+    {1e+289, chars_format::fixed, 0,
+        "1000000000000000061727833527867156886994372310963011258310052850538813376539671558942539170944464796694310"
+        "4584514912613103459078543395617173821153536698722855425910210916188218613474303381375362727338596024627724"
+        "499484625789034803081540112423670420191213257583185130503608895092113260150784"},
+    {1e+290, chars_format::fixed, 0,
+        "1000000000000000061727833527867156886994372310963011258310052850538813376539671558942539170944464796694310"
+        "4584514912613103459078543395617173821153536698722855425910210916188218613474303381375362727338596024627724"
+        "4994846257890348030815401124236704201912132575831851305036088950921132601507840"},
+    {1e+291, chars_format::fixed, 0,
+        "9999999999999999578609023503462841321535518780965142838525177732290331540055724786262365370719036251480826"
+        "1289098686371420245702004200641968152637496587417778862354344999448505725826266174594802676763227561304989"
+        "6960078961318150545418464661067991669581788285529005480705688196068853638234112"},
+    {1e+292, chars_format::fixed, 0,
+        "1000000000000000013256598978357416268068656108958646003563203147794249272690425321461597941803936249972737"
+        "4638565892090988122974650007025784551738302746731685907395315255274646861058187558214617579496201832662352"
+        "585538835573636597522107561710941518560028749376834095178551288964115055725510656"},
+    {1e+293, chars_format::fixed, 0,
+        "9999999999999999246234843735396048506044893395792352520261065484899034827946607729250196942326840502532897"
+        "0231162545648343655275306678872441733790178059478330735395060467469727994972900530063978805843953102113868"
+        "000379620369084502134308975505229555772913629423636305841602377586326247764393984"},
+    {1e+294, chars_format::fixed, 0,
+        "1000000000000000066436467741248103118547156170586292454485461107376856746627884050583544890346687569804406"
+        "1207835674606680377442921610508908778753873711201997607708800780391251297994726061339549398843285746132932"
+        "05683935969567348590731356020719265634967118123751637393518591968740451429495341056"},
+    {1e+295, chars_format::fixed, 0,
+        "9999999999999999813486777206230041577815560719820581330098483720446847883279500839884297726782854580737362"
+        "6970040225815727702936870449359100155289601680494988872072239402046841988962644563396584878879514845800049"
+        "02758521100414464490983962613190835886243290260424727924570510530141380583845003264"},
+    {1e+296, chars_format::fixed, 0,
+        "9999999999999999813486777206230041577815560719820581330098483720446847883279500839884297726782854580737362"
+        "6970040225815727702936870449359100155289601680494988872072239402046841988962644563396584878879514845800049"
+        "027585211004144644909839626131908358862432902604247279245705105301413805838450032640"},
+    {1e+297, chars_format::fixed, 0,
+        "1000000000000000017652801462756379714374878780719864776839443139119744823869255243069012222883470359078822"
+        "0728292194112285349344027126247056154504923279794565007954563392017619494511608074472945276562227436175920"
+        "48849967890105831362861792425329827928397252374398383022243308510390698430058459037696"},
+    {1e+298, chars_format::fixed, 0,
+        "9999999999999999595662034753429788238255624467393741467120915117996487670031669885400803025551745174706847"
+        "8782311196631452228634829961492223321433823010024592147588202691169230215270582854596864146833859136224555"
+        "51313826420028155008403585629126369847605750170289266545852965785882018353801250996224"},
+    {1e+299, chars_format::fixed, 0,
+        "1000000000000000052504760255204420248704468581108159154915854115511802457988908195786371375080447864043704"
+        "4438328838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999"
+        "4508111903896764088007465274278014249457925878882005684283811566947219638686545940054016"},
+    {1e+300, chars_format::fixed, 0,
+        "1000000000000000052504760255204420248704468581108159154915854115511802457988908195786371375080447864043704"
+        "4438328838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999"
+        "45081119038967640880074652742780142494579258788820056842838115669472196386865459400540160"},
+    {1e+301, chars_format::fixed, 0,
+        "1000000000000000052504760255204420248704468581108159154915854115511802457988908195786371375080447864043704"
+        "4438328838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999"
+        "450811190389676408800746527427801424945792587888200568428381156694721963868654594005401600"},
+    {1e+302, chars_format::fixed, 0,
+        "1000000000000000076297030790848949253473468551506568117016017342062113802881257944841421889646917840766397"
+        "4757713854876137221038784479993829181561135051983075016764985648898162653636809541460731423515105837345898"
+        "6890825155659063617715863205282622390509284183439858617103083735673849899204570498157510656"},
+    {1e+303, chars_format::fixed, 0,
+        "1000000000000000000161765076786456438212668646231659438295495017101117499225738747865260243034213915253779"
+        "7735681803374160274458205677791996433915416060260686111507461222849761772566500442005272768073270676904621"
+        "12661427500197051226489898260678763391449376088547292320814127957486330655468919122263277568"},
+    {1e+304, chars_format::fixed, 0,
+        "9999999999999999392535525055364621860040287220117324953190771571323204563013233902843309257440507748436856"
+        "1180561621725787171937426360305302357988408668827749873014416820110410677102531624409058437198025485515990"
+        "76639682550821832659549112269607949805346034918662572406407604380845959862074904348138143744"},
+    {1e+305, chars_format::fixed, 0,
+        "9999999999999999392535525055364621860040287220117324953190771571323204563013233902843309257440507748436856"
+        "1180561621725787171937426360305302357988408668827749873014416820110410677102531624409058437198025485515990"
+        "766396825508218326595491122696079498053460349186625724064076043808459598620749043481381437440"},
+    {1e+306, chars_format::fixed, 0,
+        "1000000000000000017216064596736454828831087825013238982328892017892380671244575047987920451875459594568606"
+        "1388616982910603110492255329485206969388057114406501226285146694284603569926249680283295506892241752843467"
+        "30060716088829214255439694630119794546505512415617982143262670862918816362862119154749127262208"},
+    {1e+307, chars_format::fixed, 0,
+        "9999999999999999860310597602564577717002641838126363875249660735883565852672743849064846414228960666786379"
+        "2803926546153933531728502521033362759523706153970107306916646893751785690398510731463396416232660711267200"
+        "11020169553304018596457812688561947201171488461172921822139066929851282122002676667750021070848"},
+    {1e+308, chars_format::fixed, 0,
+        "1000000000000000010979063629440455417404923096773118463368106829031575854049114915371633289784946888990612"
+        "4966972117251561159028374314008832830700919814604603127166450293302718569748969958855904333838446616500117"
+        "8426897626212945177628091195786707458122783970171784415105291802893207873272974885715430223118336"},
+};
+
+#endif // DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_2_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_3.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_3.hpp
new file mode 100644
index 0000000..9b9efea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_3.hpp
@@ -0,0 +1,10832 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_3_HPP
+#define DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_3_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_fixed_precision_to_chars_test_cases_3[] = {
+    // Ryu Printf d2fixed_test.cc D2fixedTest AllBinaryExponents
+    // These values test every binary exponent.
+    // The mantissas were randomly generated.
+    {0x0.63b831e8bd9d7p-1022, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008667315560"
+        "1518373204745615934992065170006880827787289636461039456117181014435225731420739682086431846196084055971776"
+        "1976781401452617612090003075542930260777812518669659241729724010681746641686623499848468215594968202107915"
+        "3402945471922988971873909012440740220527800911244244822910902773084448896950002963160859062629660988288537"
+        "4947604962348974323036144310657614326754120115556509383797380330234783520222245524583876671362471849408043"
+        "1858617260899963028423305531253945552260335123939000593240656910669298632181747412649714974019858835628576"
+        "1402581880926947783051518340651609793980053160313425027619711896255545853478748493923212623215309262429188"
+        "9535798750202922731324119623206905408779063259071595105183391812893811664489504206776437911230459576472640"
+        "03753662109375"},
+    {0x1.8777195166b0cp-1022, chars_format::fixed, 1072,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034024962888"
+        "5488918707803802237219634159360572672157684890228809310363407096641170467659879771805264411927667980233377"
+        "8493381613983963619886353435618596864780020416582962791672696335498871803986814670850483660459156676370951"
+        "5096631215158510441977866477856881896988317751492854297037574001592689593245951090014597401089987064349011"
+        "8898178199420014167358923990328782986564433565017977882465941632972037475759286148645435617069627150190560"
+        "6610044637601532768006545677482036919081933078680182749619038785085197654630878239258803610922679880731846"
+        "1295595610061523269781283221357431760026778081133972233612002223605221826818897235077493324279732240457324"
+        "0208707312500506083305050530743859909422095574730572935613200283098897446182155845928463122618268243968486"
+        "785888671875"},
+    {0x1.4668b84fe57a0p-1021, chars_format::fixed, 1068,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000056740958740"
+        "6416315113843845367765611463402272605773579309805044238876264896175716378374414880313837549557854086594144"
+        "6517571068268270820532248191376149517571648221869547136333897392941241920946002959571014115138922292227756"
+        "5675579700156979183315496460915138087093250268282674126774708694126428169237269531699329932826961970700281"
+        "7860044551711084995833922394577051992453091701226019440181486036346841321732890759392314160217956773831481"
+        "0836998109083129295391451373564751392901299926267367714488145730269066445855381488848672338113942395343914"
+        "7931259731375390972529039085122338240869687761572122993383754664276573025666127187344547915597384296829871"
+        "1175582031872758195259747569288096497941384426647703960591649037179391408883266656459909427212551236152648"
+        "92578125"},
+    {0x1.befe59a615135p-1020, chars_format::fixed, 1072,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000155405261736"
+        "2235237599344524566268329346499410781820240377373211399724292118817533439328423661067387776003211400451369"
+        "3088093284719809466733351558863675884965219358948864762862301475919926006238764851665875890220244143133239"
+        "4990914215952953745660507019834777919259824309540394759202512511945735293837981431982027834358977473029612"
+        "0303664088965600921426179216076245193704452662458429835783277758594438863220080552115251534233085611706230"
+        "8503464635136074518967164258938058608025448494327947396239370394992669778837860314635821269578123701586483"
+        "9016649103853253096649589094048656135137787361348031132374178952614572001907211566747518775736907525882271"
+        "0974186182997578768175923453881771250830539545867001930118621195145977916950326414013971998429042287170886"
+        "993408203125"},
+    {0x1.1e3d1ff2f0c7dp-1019, chars_format::fixed, 1071,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000199032000513"
+        "5142880561598924319312704477072269270245936137839955953465230545195415127755767083901447533947828678376962"
+        "8840827353272482512734186549366506777424260696503583584763933654973123255607415124268905380654726960778878"
+        "0455364488415004387840662750774569999550709914737717510587715348152633060357249935862626075624081617450315"
+        "4885783858040748854022822093131458054271092923292182143582852711297479202477529680286154546026438265660119"
+        "0666964359310825902834425266702229494789747194864674154539719905344544705996332452876246842805615529643436"
+        "3330985188230759038449117763080644432854364707566853651485305297515523425163520740729706771939538840583142"
+        "0311524001253621714021938613841338246896203505202451193812218773931269549326908419040194075932959094643592"
+        "83447265625"},
+    {0x1.6f434a1f8b19bp-1018, chars_format::fixed, 1070,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000510741853904"
+        "6846927047373682830132718075006256443666199351873286782041441258279676361749462207484160512079462800015135"
+        "1247641526009378027445855026174588417177058971036936098000778820888042031017906554373258977780010263225403"
+        "4985134368614288894180981269713098266814859393907435942503999009239804035089734298703368406224788919100457"
+        "8703872406975692839527795367059563095996889887433505152749668146313379417615714580759187210921661443825061"
+        "5079726743650989704965620642901239809189450397279529801654706466234792028552787228839089551760441918109416"
+        "4246004056408218871243893690629186700027052396055033266400221089830267330844275401596778964865771996400585"
+        "2935700696823519264465123996032196818637410241732060994427104056094504278256324125706555605574976652860641"
+        "4794921875"},
+    {0x1.587345c18153ep-1017, chars_format::fixed, 1068,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000958034150713"
+        "4764786508271836926643404057427002697780971266720840479203611958030287584788324659120693742922007657201247"
+        "5701432533443920920943404653989371931593878000743154963499391621521760536226285826940742684233420125807325"
+        "1475122129361059576300349579506194683866694625320913445655672698919325929161890237571835547216240424390568"
+        "4503604058791100485208980042190187445440799433710816373805294721006156102426371505496796959141102703635606"
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+        "978681689679366741339635310316349500249207446752433563045842746492341156586638953143467738398720"},
+    {0x1.3e04900b4e89ep+1021, chars_format::fixed, 0,
+        "2791496372374563643332709866809290981114730224378050606994822818228326594781000162780323911104517277890639"
+        "3098707244757298090886194248239218943139090593484015407218496749128358376605186663256302502757258571365175"
+        "630215388510334525743239925811352693280111872637884811742138711874263709333351600610928924557312"},
+    {0x1.5cd1470a36d2ep+1022, chars_format::fixed, 0,
+        "6123699292104194981771404189192852883978693833694232208413709518604296181981393604802892672354866046897127"
+        "8496965458693991743225149388783817396573788778128574099251588335294401179946164342339300212146009105558717"
+        "985452576260185887979241983673503558946414035103004649802078842226017422195444929429676453003264"},
+    {0x1.e4ed787bb244bp+1023, chars_format::fixed, 0,
+        "1702638774998990104935280334555195796750436559084917131548593325784866486976081021679835107118659466855126"
+        "2984927294793703708001158120333242616861941586246075606910029233718147847851055755750691813753282576963131"
+        "0693972479511748662180221113394836543075210717029725044946195117678217681054268005181200990732288"},
+};
+
+#endif // DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_3_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_4.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_4.hpp
new file mode 100644
index 0000000..7ac8332
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_fixed_precision_to_chars_test_cases_4.hpp
@@ -0,0 +1,10811 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_4_HPP
+#define DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_4_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_fixed_precision_to_chars_test_cases_4[] = {
+    // Test the maximum mantissa, which generates the most digits for each exponent.
+    {0x0.fffffffffffffp-1022, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585"
+        "0720088902458687608585988765042311224095946549352480256244000922823569517877588880375915526423097809504343"
+        "1208587738715835729182199302029437922422355981982750124204178896957131179108226104397197960400045489739193"
+        "8079198936081525613113376149842043271751033627391549782731594143828136275113838604094249464942286316695429"
+        "1050802018159266421349966065178030950759130587198464239060686371020051087232827846788436319445158661350412"
+        "2347901479236958520832159762106637540161373658304419360371477835530668283453563400507407304013560296804637"
+        "5918583163124224521599262546494300836851861719422417646455137135420132217031370496583210154654068035397417"
+        "9060225895030235019375197730309457631732108525072993050897615825191597207572324554347709124613174935802817"
+        "34466552734375"},
+    {0x1.fffffffffffffp-1022, chars_format::fixed, 1074,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170"
+        "1440227211481959341826395186963909270329129604685221944964444404215389103305904781627017582829831782607924"
+        "2213740172877389189291055314414815641243486759976282126534658507104573762744298025962244902903779698114444"
+        "6145705102663115100318287949527959668236039986479250965780342141637013812613333119898765515451440315261253"
+        "8132666529513060001849177663286607555958373922409899478075565940981010216121988146052587425791790000716759"
+        "9934414508608720568157791543592301891033496486942061405218289243144579760516365090360651414037721744226256"
+        "1590244668525767372446430075513332450079650686719491377688478005309963967709758965844137894433796621993967"
+        "3169362804570848666132067970177289160800206986794085513437288676754097207572324554347709124613174935802817"
+        "34466552734375"},
+    {0x1.fffffffffffffp-1021, chars_format::fixed, 1073,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000089002954340"
+        "2880454422963918683652790373927818540658259209370443889928888808430778206611809563254035165659663565215848"
+        "4427480345754778378582110628829631282486973519952564253069317014209147525488596051924489805807559396228889"
+        "2291410205326230200636575899055919336472079972958501931560684283274027625226666239797531030902880630522507"
+        "6265333059026120003698355326573215111916747844819798956151131881962020432243976292105174851583580001433519"
+        "9868829017217441136315583087184603782066992973884122810436578486289159521032730180721302828075443488452512"
+        "3180489337051534744892860151026664900159301373438982755376956010619927935419517931688275788867593243987934"
+        "6338725609141697332264135940354578321600413973588171026874577353508194415144649108695418249226349871605634"
+        "6893310546875"},
+    {0x1.fffffffffffffp-1020, chars_format::fixed, 1072,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000178005908680"
+        "5760908845927837367305580747855637081316518418740887779857777616861556413223619126508070331319327130431696"
+        "8854960691509556757164221257659262564973947039905128506138634028418295050977192103848979611615118792457778"
+        "4582820410652460401273151798111838672944159945917003863121368566548055250453332479595062061805761261045015"
+        "2530666118052240007396710653146430223833495689639597912302263763924040864487952584210349703167160002867039"
+        "9737658034434882272631166174369207564133985947768245620873156972578319042065460361442605656150886976905024"
+        "6360978674103069489785720302053329800318602746877965510753912021239855870839035863376551577735186487975869"
+        "2677451218283394664528271880709156643200827947176342053749154707016388830289298217390836498452699743211269"
+        "378662109375"},
+    {0x1.fffffffffffffp-1019, chars_format::fixed, 1071,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000356011817361"
+        "1521817691855674734611161495711274162633036837481775559715555233723112826447238253016140662638654260863393"
+        "7709921383019113514328442515318525129947894079810257012277268056836590101954384207697959223230237584915556"
+        "9165640821304920802546303596223677345888319891834007726242737133096110500906664959190124123611522522090030"
+        "5061332236104480014793421306292860447666991379279195824604527527848081728975905168420699406334320005734079"
+        "9475316068869764545262332348738415128267971895536491241746313945156638084130920722885211312301773953810049"
+        "2721957348206138979571440604106659600637205493755931021507824042479711741678071726753103155470372975951738"
+        "5354902436566789329056543761418313286401655894352684107498309414032777660578596434781672996905399486422538"
+        "75732421875"},
+    {0x1.fffffffffffffp-1018, chars_format::fixed, 1070,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000712023634722"
+        "3043635383711349469222322991422548325266073674963551119431110467446225652894476506032281325277308521726787"
+        "5419842766038227028656885030637050259895788159620514024554536113673180203908768415395918446460475169831113"
+        "8331281642609841605092607192447354691776639783668015452485474266192221001813329918380248247223045044180061"
+        "0122664472208960029586842612585720895333982758558391649209055055696163457951810336841398812668640011468159"
+        "8950632137739529090524664697476830256535943791072982483492627890313276168261841445770422624603547907620098"
+        "5443914696412277959142881208213319201274410987511862043015648084959423483356143453506206310940745951903477"
+        "0709804873133578658113087522836626572803311788705368214996618828065555321157192869563345993810798972845077"
+        "5146484375"},
+    {0x1.fffffffffffffp-1017, chars_format::fixed, 1069,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001424047269444"
+        "6087270767422698938444645982845096650532147349927102238862220934892451305788953012064562650554617043453575"
+        "0839685532076454057313770061274100519791576319241028049109072227346360407817536830791836892920950339662227"
+        "6662563285219683210185214384894709383553279567336030904970948532384442003626659836760496494446090088360122"
+        "0245328944417920059173685225171441790667965517116783298418110111392326915903620673682797625337280022936319"
+        "7901264275479058181049329394953660513071887582145964966985255780626552336523682891540845249207095815240197"
+        "0887829392824555918285762416426638402548821975023724086031296169918846966712286907012412621881491903806954"
+        "1419609746267157316226175045673253145606623577410736429993237656131110642314385739126691987621597945690155"
+        "029296875"},
+    {0x1.fffffffffffffp-1016, chars_format::fixed, 1068,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002848094538889"
+        "2174541534845397876889291965690193301064294699854204477724441869784902611577906024129125301109234086907150"
+        "1679371064152908114627540122548201039583152638482056098218144454692720815635073661583673785841900679324455"
+        "3325126570439366420370428769789418767106559134672061809941897064768884007253319673520992988892180176720244"
+        "0490657888835840118347370450342883581335931034233566596836220222784653831807241347365595250674560045872639"
+        "5802528550958116362098658789907321026143775164291929933970511561253104673047365783081690498414191630480394"
+        "1775658785649111836571524832853276805097643950047448172062592339837693933424573814024825243762983807613908"
+        "2839219492534314632452350091346506291213247154821472859986475312262221284628771478253383975243195891380310"
+        "05859375"},
+    {0x1.fffffffffffffp-1015, chars_format::fixed, 1067,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005696189077778"
+        "4349083069690795753778583931380386602128589399708408955448883739569805223155812048258250602218468173814300"
+        "3358742128305816229255080245096402079166305276964112196436288909385441631270147323167347571683801358648910"
+        "6650253140878732840740857539578837534213118269344123619883794129537768014506639347041985977784360353440488"
+        "0981315777671680236694740900685767162671862068467133193672440445569307663614482694731190501349120091745279"
+        "1605057101916232724197317579814642052287550328583859867941023122506209346094731566163380996828383260960788"
+        "3551317571298223673143049665706553610195287900094896344125184679675387866849147628049650487525967615227816"
+        "5678438985068629264904700182693012582426494309642945719972950624524442569257542956506767950486391782760620"
+        "1171875"},
+    {0x1.fffffffffffffp-1014, chars_format::fixed, 1066,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000011392378155556"
+        "8698166139381591507557167862760773204257178799416817910897767479139610446311624096516501204436936347628600"
+        "6717484256611632458510160490192804158332610553928224392872577818770883262540294646334695143367602717297821"
+        "3300506281757465681481715079157675068426236538688247239767588259075536029013278694083971955568720706880976"
+        "1962631555343360473389481801371534325343724136934266387344880891138615327228965389462381002698240183490558"
+        "3210114203832465448394635159629284104575100657167719735882046245012418692189463132326761993656766521921576"
+        "7102635142596447346286099331413107220390575800189792688250369359350775733698295256099300975051935230455633"
+        "1356877970137258529809400365386025164852988619285891439945901249048885138515085913013535900972783565521240"
+        "234375"},
+    {0x1.fffffffffffffp-1013, chars_format::fixed, 1065,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022784756311113"
+        "7396332278763183015114335725521546408514357598833635821795534958279220892623248193033002408873872695257201"
+        "3434968513223264917020320980385608316665221107856448785745155637541766525080589292669390286735205434595642"
+        "6601012563514931362963430158315350136852473077376494479535176518151072058026557388167943911137441413761952"
+        "3925263110686720946778963602743068650687448273868532774689761782277230654457930778924762005396480366981116"
+        "6420228407664930896789270319258568209150201314335439471764092490024837384378926264653523987313533043843153"
+        "4205270285192894692572198662826214440781151600379585376500738718701551467396590512198601950103870460911266"
+        "2713755940274517059618800730772050329705977238571782879891802498097770277030171826027071801945567131042480"
+        "46875"},
+    {0x1.fffffffffffffp-1012, chars_format::fixed, 1064,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000045569512622227"
+        "4792664557526366030228671451043092817028715197667271643591069916558441785246496386066004817747745390514402"
+        "6869937026446529834040641960771216633330442215712897571490311275083533050161178585338780573470410869191285"
+        "3202025127029862725926860316630700273704946154752988959070353036302144116053114776335887822274882827523904"
+        "7850526221373441893557927205486137301374896547737065549379523564554461308915861557849524010792960733962233"
+        "2840456815329861793578540638517136418300402628670878943528184980049674768757852529307047974627066087686306"
+        "8410540570385789385144397325652428881562303200759170753001477437403102934793181024397203900207740921822532"
+        "5427511880549034119237601461544100659411954477143565759783604996195540554060343652054143603891134262084960"
+        "9375"},
+    {0x1.fffffffffffffp-1011, chars_format::fixed, 1063,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000091139025244454"
+        "9585329115052732060457342902086185634057430395334543287182139833116883570492992772132009635495490781028805"
+        "3739874052893059668081283921542433266660884431425795142980622550167066100322357170677561146940821738382570"
+        "6404050254059725451853720633261400547409892309505977918140706072604288232106229552671775644549765655047809"
+        "5701052442746883787115854410972274602749793095474131098759047129108922617831723115699048021585921467924466"
+        "5680913630659723587157081277034272836600805257341757887056369960099349537515705058614095949254132175372613"
+        "6821081140771578770288794651304857763124606401518341506002954874806205869586362048794407800415481843645065"
+        "0855023761098068238475202923088201318823908954287131519567209992391081108120687304108287207782268524169921"
+        "875"},
+    {0x1.fffffffffffffp-1010, chars_format::fixed, 1062,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000182278050488909"
+        "9170658230105464120914685804172371268114860790669086574364279666233767140985985544264019270990981562057610"
+        "7479748105786119336162567843084866533321768862851590285961245100334132200644714341355122293881643476765141"
+        "2808100508119450903707441266522801094819784619011955836281412145208576464212459105343551289099531310095619"
+        "1402104885493767574231708821944549205499586190948262197518094258217845235663446231398096043171842935848933"
+        "1361827261319447174314162554068545673201610514683515774112739920198699075031410117228191898508264350745227"
+        "3642162281543157540577589302609715526249212803036683012005909749612411739172724097588815600830963687290130"
+        "1710047522196136476950405846176402637647817908574263039134419984782162216241374608216574415564537048339843"
+        "75"},
+    {0x1.fffffffffffffp-1009, chars_format::fixed, 1061,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000364556100977819"
+        "8341316460210928241829371608344742536229721581338173148728559332467534281971971088528038541981963124115221"
+        "4959496211572238672325135686169733066643537725703180571922490200668264401289428682710244587763286953530282"
+        "5616201016238901807414882533045602189639569238023911672562824290417152928424918210687102578199062620191238"
+        "2804209770987535148463417643889098410999172381896524395036188516435690471326892462796192086343685871697866"
+        "2723654522638894348628325108137091346403221029367031548225479840397398150062820234456383797016528701490454"
+        "7284324563086315081155178605219431052498425606073366024011819499224823478345448195177631201661927374580260"
+        "3420095044392272953900811692352805275295635817148526078268839969564324432482749216433148831129074096679687"
+        "5"},
+    {0x1.fffffffffffffp-1008, chars_format::fixed, 1060,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000729112201955639"
+        "6682632920421856483658743216689485072459443162676346297457118664935068563943942177056077083963926248230442"
+        "9918992423144477344650271372339466133287075451406361143844980401336528802578857365420489175526573907060565"
+        "1232402032477803614829765066091204379279138476047823345125648580834305856849836421374205156398125240382476"
+        "5608419541975070296926835287778196821998344763793048790072377032871380942653784925592384172687371743395732"
+        "5447309045277788697256650216274182692806442058734063096450959680794796300125640468912767594033057402980909"
+        "4568649126172630162310357210438862104996851212146732048023638998449646956690896390355262403323854749160520"
+        "684019008878454590780162338470561055059127163429705215653767993912864886496549843286629766225814819335937"
+        "5"},
+    {0x1.fffffffffffffp-1007, chars_format::fixed, 1059,
+        "0."
+        "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
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+        "00000000000000044408920985006256686564609092309028676696466982586064542459780568606220185756683349609375"},
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+        "0."
+        "0000000000000008881784197001251337312921818461805735339293396517212908491956113721244037151336669921875"},
+    {0x1.fffffffffffffp-50, chars_format::fixed, 102,
+        "0.000000000000001776356839400250267462584363692361147067858679303442581698391222744248807430267333984375"},
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+        "0.000000000000113686837721616017117605399276311113412342955475420325228697038255631923675537109375"},
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+        "0.0000000002328306436538696030568558577178851602684783728136608260683715343475341796875"},
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+    {0x1.fffffffffffffp+132, chars_format::fixed, 0, "10889035741470029621902167823187408060416"},
+    {0x1.fffffffffffffp+133, chars_format::fixed, 0, "21778071482940059243804335646374816120832"},
+    {0x1.fffffffffffffp+134, chars_format::fixed, 0, "43556142965880118487608671292749632241664"},
+    {0x1.fffffffffffffp+135, chars_format::fixed, 0, "87112285931760236975217342585499264483328"},
+    {0x1.fffffffffffffp+136, chars_format::fixed, 0, "174224571863520473950434685170998528966656"},
+    {0x1.fffffffffffffp+137, chars_format::fixed, 0, "348449143727040947900869370341997057933312"},
+    {0x1.fffffffffffffp+138, chars_format::fixed, 0, "696898287454081895801738740683994115866624"},
+    {0x1.fffffffffffffp+139, chars_format::fixed, 0, "1393796574908163791603477481367988231733248"},
+    {0x1.fffffffffffffp+140, chars_format::fixed, 0, "2787593149816327583206954962735976463466496"},
+    {0x1.fffffffffffffp+141, chars_format::fixed, 0, "5575186299632655166413909925471952926932992"},
+    {0x1.fffffffffffffp+142, chars_format::fixed, 0, "11150372599265310332827819850943905853865984"},
+    {0x1.fffffffffffffp+143, chars_format::fixed, 0, "22300745198530620665655639701887811707731968"},
+    {0x1.fffffffffffffp+144, chars_format::fixed, 0, "44601490397061241331311279403775623415463936"},
+    {0x1.fffffffffffffp+145, chars_format::fixed, 0, "89202980794122482662622558807551246830927872"},
+    {0x1.fffffffffffffp+146, chars_format::fixed, 0, "178405961588244965325245117615102493661855744"},
+    {0x1.fffffffffffffp+147, chars_format::fixed, 0, "356811923176489930650490235230204987323711488"},
+    {0x1.fffffffffffffp+148, chars_format::fixed, 0, "713623846352979861300980470460409974647422976"},
+    {0x1.fffffffffffffp+149, chars_format::fixed, 0, "1427247692705959722601960940920819949294845952"},
+    {0x1.fffffffffffffp+150, chars_format::fixed, 0, "2854495385411919445203921881841639898589691904"},
+    {0x1.fffffffffffffp+151, chars_format::fixed, 0, "5708990770823838890407843763683279797179383808"},
+    {0x1.fffffffffffffp+152, chars_format::fixed, 0, "11417981541647677780815687527366559594358767616"},
+    {0x1.fffffffffffffp+153, chars_format::fixed, 0, "22835963083295355561631375054733119188717535232"},
+    {0x1.fffffffffffffp+154, chars_format::fixed, 0, "45671926166590711123262750109466238377435070464"},
+    {0x1.fffffffffffffp+155, chars_format::fixed, 0, "91343852333181422246525500218932476754870140928"},
+    {0x1.fffffffffffffp+156, chars_format::fixed, 0, "182687704666362844493051000437864953509740281856"},
+    {0x1.fffffffffffffp+157, chars_format::fixed, 0, "365375409332725688986102000875729907019480563712"},
+    {0x1.fffffffffffffp+158, chars_format::fixed, 0, "730750818665451377972204001751459814038961127424"},
+    {0x1.fffffffffffffp+159, chars_format::fixed, 0, "1461501637330902755944408003502919628077922254848"},
+    {0x1.fffffffffffffp+160, chars_format::fixed, 0, "2923003274661805511888816007005839256155844509696"},
+    {0x1.fffffffffffffp+161, chars_format::fixed, 0, "5846006549323611023777632014011678512311689019392"},
+    {0x1.fffffffffffffp+162, chars_format::fixed, 0, "11692013098647222047555264028023357024623378038784"},
+    {0x1.fffffffffffffp+163, chars_format::fixed, 0, "23384026197294444095110528056046714049246756077568"},
+    {0x1.fffffffffffffp+164, chars_format::fixed, 0, "46768052394588888190221056112093428098493512155136"},
+    {0x1.fffffffffffffp+165, chars_format::fixed, 0, "93536104789177776380442112224186856196987024310272"},
+    {0x1.fffffffffffffp+166, chars_format::fixed, 0, "187072209578355552760884224448373712393974048620544"},
+    {0x1.fffffffffffffp+167, chars_format::fixed, 0, "374144419156711105521768448896747424787948097241088"},
+    {0x1.fffffffffffffp+168, chars_format::fixed, 0, "748288838313422211043536897793494849575896194482176"},
+    {0x1.fffffffffffffp+169, chars_format::fixed, 0, "1496577676626844422087073795586989699151792388964352"},
+    {0x1.fffffffffffffp+170, chars_format::fixed, 0, "2993155353253688844174147591173979398303584777928704"},
+    {0x1.fffffffffffffp+171, chars_format::fixed, 0, "5986310706507377688348295182347958796607169555857408"},
+    {0x1.fffffffffffffp+172, chars_format::fixed, 0, "11972621413014755376696590364695917593214339111714816"},
+    {0x1.fffffffffffffp+173, chars_format::fixed, 0, "23945242826029510753393180729391835186428678223429632"},
+    {0x1.fffffffffffffp+174, chars_format::fixed, 0, "47890485652059021506786361458783670372857356446859264"},
+    {0x1.fffffffffffffp+175, chars_format::fixed, 0, "95780971304118043013572722917567340745714712893718528"},
+    {0x1.fffffffffffffp+176, chars_format::fixed, 0, "191561942608236086027145445835134681491429425787437056"},
+    {0x1.fffffffffffffp+177, chars_format::fixed, 0, "383123885216472172054290891670269362982858851574874112"},
+    {0x1.fffffffffffffp+178, chars_format::fixed, 0, "766247770432944344108581783340538725965717703149748224"},
+    {0x1.fffffffffffffp+179, chars_format::fixed, 0, "1532495540865888688217163566681077451931435406299496448"},
+    {0x1.fffffffffffffp+180, chars_format::fixed, 0, "3064991081731777376434327133362154903862870812598992896"},
+    {0x1.fffffffffffffp+181, chars_format::fixed, 0, "6129982163463554752868654266724309807725741625197985792"},
+    {0x1.fffffffffffffp+182, chars_format::fixed, 0, "12259964326927109505737308533448619615451483250395971584"},
+    {0x1.fffffffffffffp+183, chars_format::fixed, 0, "24519928653854219011474617066897239230902966500791943168"},
+    {0x1.fffffffffffffp+184, chars_format::fixed, 0, "49039857307708438022949234133794478461805933001583886336"},
+    {0x1.fffffffffffffp+185, chars_format::fixed, 0, "98079714615416876045898468267588956923611866003167772672"},
+    {0x1.fffffffffffffp+186, chars_format::fixed, 0, "196159429230833752091796936535177913847223732006335545344"},
+    {0x1.fffffffffffffp+187, chars_format::fixed, 0, "392318858461667504183593873070355827694447464012671090688"},
+    {0x1.fffffffffffffp+188, chars_format::fixed, 0, "784637716923335008367187746140711655388894928025342181376"},
+    {0x1.fffffffffffffp+189, chars_format::fixed, 0, "1569275433846670016734375492281423310777789856050684362752"},
+    {0x1.fffffffffffffp+190, chars_format::fixed, 0, "3138550867693340033468750984562846621555579712101368725504"},
+    {0x1.fffffffffffffp+191, chars_format::fixed, 0, "6277101735386680066937501969125693243111159424202737451008"},
+    {0x1.fffffffffffffp+192, chars_format::fixed, 0, "12554203470773360133875003938251386486222318848405474902016"},
+    {0x1.fffffffffffffp+193, chars_format::fixed, 0, "25108406941546720267750007876502772972444637696810949804032"},
+    {0x1.fffffffffffffp+194, chars_format::fixed, 0, "50216813883093440535500015753005545944889275393621899608064"},
+    {0x1.fffffffffffffp+195, chars_format::fixed, 0, "100433627766186881071000031506011091889778550787243799216128"},
+    {0x1.fffffffffffffp+196, chars_format::fixed, 0, "200867255532373762142000063012022183779557101574487598432256"},
+    {0x1.fffffffffffffp+197, chars_format::fixed, 0, "401734511064747524284000126024044367559114203148975196864512"},
+    {0x1.fffffffffffffp+198, chars_format::fixed, 0, "803469022129495048568000252048088735118228406297950393729024"},
+    {0x1.fffffffffffffp+199, chars_format::fixed, 0, "1606938044258990097136000504096177470236456812595900787458048"},
+    {0x1.fffffffffffffp+200, chars_format::fixed, 0, "3213876088517980194272001008192354940472913625191801574916096"},
+    {0x1.fffffffffffffp+201, chars_format::fixed, 0, "6427752177035960388544002016384709880945827250383603149832192"},
+    {0x1.fffffffffffffp+202, chars_format::fixed, 0, "12855504354071920777088004032769419761891654500767206299664384"},
+    {0x1.fffffffffffffp+203, chars_format::fixed, 0, "25711008708143841554176008065538839523783309001534412599328768"},
+    {0x1.fffffffffffffp+204, chars_format::fixed, 0, "51422017416287683108352016131077679047566618003068825198657536"},
+    {0x1.fffffffffffffp+205, chars_format::fixed, 0, "102844034832575366216704032262155358095133236006137650397315072"},
+    {0x1.fffffffffffffp+206, chars_format::fixed, 0, "205688069665150732433408064524310716190266472012275300794630144"},
+    {0x1.fffffffffffffp+207, chars_format::fixed, 0, "411376139330301464866816129048621432380532944024550601589260288"},
+    {0x1.fffffffffffffp+208, chars_format::fixed, 0, "822752278660602929733632258097242864761065888049101203178520576"},
+    {0x1.fffffffffffffp+209, chars_format::fixed, 0,
+        "1645504557321205859467264516194485729522131776098202406357041152"},
+    {0x1.fffffffffffffp+210, chars_format::fixed, 0,
+        "3291009114642411718934529032388971459044263552196404812714082304"},
+    {0x1.fffffffffffffp+211, chars_format::fixed, 0,
+        "6582018229284823437869058064777942918088527104392809625428164608"},
+    {0x1.fffffffffffffp+212, chars_format::fixed, 0,
+        "13164036458569646875738116129555885836177054208785619250856329216"},
+    {0x1.fffffffffffffp+213, chars_format::fixed, 0,
+        "26328072917139293751476232259111771672354108417571238501712658432"},
+    {0x1.fffffffffffffp+214, chars_format::fixed, 0,
+        "52656145834278587502952464518223543344708216835142477003425316864"},
+    {0x1.fffffffffffffp+215, chars_format::fixed, 0,
+        "105312291668557175005904929036447086689416433670284954006850633728"},
+    {0x1.fffffffffffffp+216, chars_format::fixed, 0,
+        "210624583337114350011809858072894173378832867340569908013701267456"},
+    {0x1.fffffffffffffp+217, chars_format::fixed, 0,
+        "421249166674228700023619716145788346757665734681139816027402534912"},
+    {0x1.fffffffffffffp+218, chars_format::fixed, 0,
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+    {0x1.fffffffffffffp+219, chars_format::fixed, 0,
+        "1684996666696914800094478864583153387030662938724559264109610139648"},
+    {0x1.fffffffffffffp+220, chars_format::fixed, 0,
+        "3369993333393829600188957729166306774061325877449118528219220279296"},
+    {0x1.fffffffffffffp+221, chars_format::fixed, 0,
+        "6739986666787659200377915458332613548122651754898237056438440558592"},
+    {0x1.fffffffffffffp+222, chars_format::fixed, 0,
+        "13479973333575318400755830916665227096245303509796474112876881117184"},
+    {0x1.fffffffffffffp+223, chars_format::fixed, 0,
+        "26959946667150636801511661833330454192490607019592948225753762234368"},
+    {0x1.fffffffffffffp+224, chars_format::fixed, 0,
+        "53919893334301273603023323666660908384981214039185896451507524468736"},
+    {0x1.fffffffffffffp+225, chars_format::fixed, 0,
+        "107839786668602547206046647333321816769962428078371792903015048937472"},
+    {0x1.fffffffffffffp+226, chars_format::fixed, 0,
+        "215679573337205094412093294666643633539924856156743585806030097874944"},
+    {0x1.fffffffffffffp+227, chars_format::fixed, 0,
+        "431359146674410188824186589333287267079849712313487171612060195749888"},
+    {0x1.fffffffffffffp+228, chars_format::fixed, 0,
+        "862718293348820377648373178666574534159699424626974343224120391499776"},
+    {0x1.fffffffffffffp+229, chars_format::fixed, 0,
+        "1725436586697640755296746357333149068319398849253948686448240782999552"},
+    {0x1.fffffffffffffp+230, chars_format::fixed, 0,
+        "3450873173395281510593492714666298136638797698507897372896481565999104"},
+    {0x1.fffffffffffffp+231, chars_format::fixed, 0,
+        "6901746346790563021186985429332596273277595397015794745792963131998208"},
+    {0x1.fffffffffffffp+232, chars_format::fixed, 0,
+        "13803492693581126042373970858665192546555190794031589491585926263996416"},
+    {0x1.fffffffffffffp+233, chars_format::fixed, 0,
+        "27606985387162252084747941717330385093110381588063178983171852527992832"},
+    {0x1.fffffffffffffp+234, chars_format::fixed, 0,
+        "55213970774324504169495883434660770186220763176126357966343705055985664"},
+    {0x1.fffffffffffffp+235, chars_format::fixed, 0,
+        "110427941548649008338991766869321540372441526352252715932687410111971328"},
+    {0x1.fffffffffffffp+236, chars_format::fixed, 0,
+        "220855883097298016677983533738643080744883052704505431865374820223942656"},
+    {0x1.fffffffffffffp+237, chars_format::fixed, 0,
+        "441711766194596033355967067477286161489766105409010863730749640447885312"},
+    {0x1.fffffffffffffp+238, chars_format::fixed, 0,
+        "883423532389192066711934134954572322979532210818021727461499280895770624"},
+    {0x1.fffffffffffffp+239, chars_format::fixed, 0,
+        "1766847064778384133423868269909144645959064421636043454922998561791541248"},
+    {0x1.fffffffffffffp+240, chars_format::fixed, 0,
+        "3533694129556768266847736539818289291918128843272086909845997123583082496"},
+    {0x1.fffffffffffffp+241, chars_format::fixed, 0,
+        "7067388259113536533695473079636578583836257686544173819691994247166164992"},
+    {0x1.fffffffffffffp+242, chars_format::fixed, 0,
+        "14134776518227073067390946159273157167672515373088347639383988494332329984"},
+    {0x1.fffffffffffffp+243, chars_format::fixed, 0,
+        "28269553036454146134781892318546314335345030746176695278767976988664659968"},
+    {0x1.fffffffffffffp+244, chars_format::fixed, 0,
+        "56539106072908292269563784637092628670690061492353390557535953977329319936"},
+    {0x1.fffffffffffffp+245, chars_format::fixed, 0,
+        "113078212145816584539127569274185257341380122984706781115071907954658639872"},
+    {0x1.fffffffffffffp+246, chars_format::fixed, 0,
+        "226156424291633169078255138548370514682760245969413562230143815909317279744"},
+    {0x1.fffffffffffffp+247, chars_format::fixed, 0,
+        "452312848583266338156510277096741029365520491938827124460287631818634559488"},
+    {0x1.fffffffffffffp+248, chars_format::fixed, 0,
+        "904625697166532676313020554193482058731040983877654248920575263637269118976"},
+    {0x1.fffffffffffffp+249, chars_format::fixed, 0,
+        "1809251394333065352626041108386964117462081967755308497841150527274538237952"},
+    {0x1.fffffffffffffp+250, chars_format::fixed, 0,
+        "3618502788666130705252082216773928234924163935510616995682301054549076475904"},
+    {0x1.fffffffffffffp+251, chars_format::fixed, 0,
+        "7237005577332261410504164433547856469848327871021233991364602109098152951808"},
+    {0x1.fffffffffffffp+252, chars_format::fixed, 0,
+        "14474011154664522821008328867095712939696655742042467982729204218196305903616"},
+    {0x1.fffffffffffffp+253, chars_format::fixed, 0,
+        "28948022309329045642016657734191425879393311484084935965458408436392611807232"},
+    {0x1.fffffffffffffp+254, chars_format::fixed, 0,
+        "57896044618658091284033315468382851758786622968169871930916816872785223614464"},
+    {0x1.fffffffffffffp+255, chars_format::fixed, 0,
+        "115792089237316182568066630936765703517573245936339743861833633745570447228928"},
+    {0x1.fffffffffffffp+256, chars_format::fixed, 0,
+        "231584178474632365136133261873531407035146491872679487723667267491140894457856"},
+    {0x1.fffffffffffffp+257, chars_format::fixed, 0,
+        "463168356949264730272266523747062814070292983745358975447334534982281788915712"},
+    {0x1.fffffffffffffp+258, chars_format::fixed, 0,
+        "926336713898529460544533047494125628140585967490717950894669069964563577831424"},
+    {0x1.fffffffffffffp+259, chars_format::fixed, 0,
+        "1852673427797058921089066094988251256281171934981435901789338139929127155662848"},
+    {0x1.fffffffffffffp+260, chars_format::fixed, 0,
+        "3705346855594117842178132189976502512562343869962871803578676279858254311325696"},
+    {0x1.fffffffffffffp+261, chars_format::fixed, 0,
+        "7410693711188235684356264379953005025124687739925743607157352559716508622651392"},
+    {0x1.fffffffffffffp+262, chars_format::fixed, 0,
+        "14821387422376471368712528759906010050249375479851487214314705119433017245302784"},
+    {0x1.fffffffffffffp+263, chars_format::fixed, 0,
+        "29642774844752942737425057519812020100498750959702974428629410238866034490605568"},
+    {0x1.fffffffffffffp+264, chars_format::fixed, 0,
+        "59285549689505885474850115039624040200997501919405948857258820477732068981211136"},
+    {0x1.fffffffffffffp+265, chars_format::fixed, 0,
+        "118571099379011770949700230079248080401995003838811897714517640955464137962422272"},
+    {0x1.fffffffffffffp+266, chars_format::fixed, 0,
+        "237142198758023541899400460158496160803990007677623795429035281910928275924844544"},
+    {0x1.fffffffffffffp+267, chars_format::fixed, 0,
+        "474284397516047083798800920316992321607980015355247590858070563821856551849689088"},
+    {0x1.fffffffffffffp+268, chars_format::fixed, 0,
+        "948568795032094167597601840633984643215960030710495181716141127643713103699378176"},
+    {0x1.fffffffffffffp+269, chars_format::fixed, 0,
+        "1897137590064188335195203681267969286431920061420990363432282255287426207398756352"},
+    {0x1.fffffffffffffp+270, chars_format::fixed, 0,
+        "3794275180128376670390407362535938572863840122841980726864564510574852414797512704"},
+    {0x1.fffffffffffffp+271, chars_format::fixed, 0,
+        "7588550360256753340780814725071877145727680245683961453729129021149704829595025408"},
+    {0x1.fffffffffffffp+272, chars_format::fixed, 0,
+        "15177100720513506681561629450143754291455360491367922907458258042299409659190050816"},
+    {0x1.fffffffffffffp+273, chars_format::fixed, 0,
+        "30354201441027013363123258900287508582910720982735845814916516084598819318380101632"},
+    {0x1.fffffffffffffp+274, chars_format::fixed, 0,
+        "60708402882054026726246517800575017165821441965471691629833032169197638636760203264"},
+    {0x1.fffffffffffffp+275, chars_format::fixed, 0,
+        "121416805764108053452493035601150034331642883930943383259666064338395277273520406528"},
+    {0x1.fffffffffffffp+276, chars_format::fixed, 0,
+        "242833611528216106904986071202300068663285767861886766519332128676790554547040813056"},
+    {0x1.fffffffffffffp+277, chars_format::fixed, 0,
+        "485667223056432213809972142404600137326571535723773533038664257353581109094081626112"},
+    {0x1.fffffffffffffp+278, chars_format::fixed, 0,
+        "971334446112864427619944284809200274653143071447547066077328514707162218188163252224"},
+    {0x1.fffffffffffffp+279, chars_format::fixed, 0,
+        "1942668892225728855239888569618400549306286142895094132154657029414324436376326504448"},
+    {0x1.fffffffffffffp+280, chars_format::fixed, 0,
+        "3885337784451457710479777139236801098612572285790188264309314058828648872752653008896"},
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+        "3422973244520073225414652957557115146108344855474058140597055172275648826715653246665295023708908892229356"
+        "97018226153225717130181517479128854633587432068879522599023068036903728121289075125818253901824"},
+    {0x1.fffffffffffffp+1019, chars_format::fixed, 0,
+        "1123558209288947317590796398323152229987941047036531228743234230019732879875178367253684741454792988572127"
+        "8684594648904014645082930591511423029221668971094811628119411034455129765343130649333059004741781778445871"
+        "394036452306451434260363034958257709267174864137759045198046136073807456242578150251636507803648"},
+    {0x1.fffffffffffffp+1020, chars_format::fixed, 0,
+        "2247116418577894635181592796646304459975882094073062457486468460039465759750356734507369482909585977144255"
+        "7369189297808029290165861183022846058443337942189623256238822068910259530686261298666118009483563556891742"
+        "788072904612902868520726069916515418534349728275518090396092272147614912485156300503273015607296"},
+    {0x1.fffffffffffffp+1021, chars_format::fixed, 0,
+        "4494232837155789270363185593292608919951764188146124914972936920078931519500713469014738965819171954288511"
+        "4738378595616058580331722366045692116886675884379246512477644137820519061372522597332236018967127113783485"
+        "576145809225805737041452139833030837068699456551036180792184544295229824970312601006546031214592"},
+    {0x1.fffffffffffffp+1022, chars_format::fixed, 0,
+        "8988465674311578540726371186585217839903528376292249829945873840157863039001426938029477931638343908577022"
+        "9476757191232117160663444732091384233773351768758493024955288275641038122745045194664472037934254227566971"
+        "152291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184"},
+    {0x1.fffffffffffffp+1023, chars_format::fixed, 0,
+        "1797693134862315708145274237317043567980705675258449965989174768031572607800285387605895586327668781715404"
+        "5895351438246423432132688946418276846754670353751698604991057655128207624549009038932894407586850845513394"
+        "2304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368"},
+};
+
+#endif // DOUBLE_FIXED_PRECISION_TO_CHARS_TEST_CASES_4_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_from_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_from_chars_test_cases.hpp
new file mode 100644
index 0000000..49bad12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_from_chars_test_cases.hpp
@@ -0,0 +1,1146 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef DOUBLE_FROM_CHARS_TEST_CASES_HPP
+#define DOUBLE_FROM_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+#include <stddef.h>
+#include <system_error>
+using namespace std;
+
+inline constexpr DoubleFromCharsTestCase double_from_chars_test_cases[] = {
+    {"1.000000000000a000", chars_format::hex, 18, errc{}, 0x1.000000000000ap0}, // exact
+    {"1.000000000000a001", chars_format::hex, 18, errc{}, 0x1.000000000000ap0}, // below midpoint, round down
+    {"1.000000000000a800", chars_format::hex, 18, errc{}, 0x1.000000000000ap0}, // midpoint, round down to even
+    {"1.000000000000a801", chars_format::hex, 18, errc{}, 0x1.000000000000bp0}, // above midpoint, round up
+    {"1.000000000000b000", chars_format::hex, 18, errc{}, 0x1.000000000000bp0}, // exact
+    {"1.000000000000b001", chars_format::hex, 18, errc{}, 0x1.000000000000bp0}, // below midpoint, round down
+    {"1.000000000000b800", chars_format::hex, 18, errc{}, 0x1.000000000000cp0}, // midpoint, round up to even
+    {"1.000000000000b801", chars_format::hex, 18, errc{}, 0x1.000000000000cp0}, // above midpoint, round up
+
+    {"1.00000000000020", chars_format::hex, 16, errc{}, 0x1.0000000000002p0}, // exact
+    {"1.00000000000021", chars_format::hex, 16, errc{}, 0x1.0000000000002p0}, // below midpoint, round down
+    {"1.00000000000028", chars_format::hex, 16, errc{}, 0x1.0000000000002p0}, // midpoint, round down to even
+    {"1.00000000000029", chars_format::hex, 16, errc{}, 0x1.0000000000003p0}, // above midpoint, round up
+    {"1.00000000000030", chars_format::hex, 16, errc{}, 0x1.0000000000003p0}, // exact
+    {"1.00000000000031", chars_format::hex, 16, errc{}, 0x1.0000000000003p0}, // below midpoint, round down
+    {"1.00000000000038", chars_format::hex, 16, errc{}, 0x1.0000000000004p0}, // midpoint, round up to even
+    {"1.00000000000039", chars_format::hex, 16, errc{}, 0x1.0000000000004p0}, // above midpoint, round up
+
+    {"1.00000000000000044408920985006261616945266723632812500000", chars_format::general, 58, errc{},
+        0x1.0000000000002p0}, // exact
+    {"1.00000000000000045796699765787707292474806308746337890625", chars_format::general, 58, errc{},
+        0x1.0000000000002p0}, // below midpoint, round down
+    {"1.00000000000000055511151231257827021181583404541015624999", chars_format::general, 58, errc{},
+        0x1.0000000000002p0}, // below midpoint, round down
+    {"1.00000000000000055511151231257827021181583404541015625000", chars_format::general, 58, errc{},
+        0x1.0000000000002p0}, // midpoint, round down to even
+    {"1.00000000000000055511151231257827021181583404541015625001", chars_format::general, 58, errc{},
+        0x1.0000000000003p0}, // above midpoint, round up
+    {"1.00000000000000056898930012039272696711122989654541015625", chars_format::general, 58, errc{},
+        0x1.0000000000003p0}, // above midpoint, round up
+    {"1.00000000000000066613381477509392425417900085449218750000", chars_format::general, 58, errc{},
+        0x1.0000000000003p0}, // exact
+    {"1.00000000000000068001160258290838100947439670562744140625", chars_format::general, 58, errc{},
+        0x1.0000000000003p0}, // below midpoint, round down
+    {"1.00000000000000077715611723760957829654216766357421874999", chars_format::general, 58, errc{},
+        0x1.0000000000003p0}, // below midpoint, round down
+    {"1.00000000000000077715611723760957829654216766357421875000", chars_format::general, 58, errc{},
+        0x1.0000000000004p0}, // midpoint, round up to even
+    {"1.00000000000000077715611723760957829654216766357421875001", chars_format::general, 58, errc{},
+        0x1.0000000000004p0}, // above midpoint, round up
+    {"1.00000000000000079103390504542403505183756351470947265625", chars_format::general, 58, errc{},
+        0x1.0000000000004p0}, // above midpoint, round up
+
+    // https://www.exploringbinary.com/nondeterministic-floating-point-conversions-in-java/
+    {"0.0000008p-1022", chars_format::hex, 15, errc{}, 0x0.0000008p-1022},
+
+    // VSO-838635 "<charconv>: from_chars() mishandles certain subnormals"
+    // These values change on half-ulp boundaries:
+    // 1 * 2^-1075 ~= 2.47e-324 (half-ulp between zero and min subnormal)
+    // 2 * 2^-1075 ~= 4.94e-324 (min subnormal)
+    // 3 * 2^-1075 ~= 7.41e-324 (half-ulp between min subnormal and next subnormal)
+    // 4 * 2^-1075 ~= 9.88e-324 (next subnormal)
+    {"1."
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111e-324",
+        chars_format::scientific, 1007, errc::result_out_of_range, 0x0.0000000000000p+0},
+    {"2."
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222e-324",
+        chars_format::scientific, 1007, errc::result_out_of_range, 0x0.0000000000000p+0},
+    {"3."
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333"
+     "3333333333333333333e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000001p-1022},
+    {"4."
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444444"
+     "4444444444444444444e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000001p-1022},
+    {"5."
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555"
+     "5555555555555555555e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000001p-1022},
+    {"6."
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000001p-1022},
+    {"7."
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000002p-1022},
+    {"8."
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000002p-1022},
+    {"9."
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999e-324",
+        chars_format::scientific, 1007, errc{}, 0x0.0000000000002p-1022},
+
+    // VSO-852024: Test cases for round-to-nearest, ties-to-even.
+    // Consider the values:
+    // A: 0x1.0000000000000p+0 == 1.0000000000000000000000000000000000000000000000000000
+    // X:    (1 + 2^-53) * 2^0 == 1.00000000000000011102230246251565404236316680908203125
+    // B: 0x1.0000000000001p+0 == 1.0000000000000002220446049250313080847263336181640625
+    // X is equidistant from A and B. Because they're tied for being nearest, we need to round to even.
+    // That means rounding down to A, because A's least significant hexit 0 is even.
+    // However, values between X and B aren't tied - they're simply nearer to B, so they need to round up to B.
+    // We need to handle tricky cases like the digits of X, followed by a million 0 digits, followed by a 1 digit.
+    // Similarly:
+    // E:      0x1.ffffffffffffep+0 == 1.999999999999999555910790149937383830547332763671875
+    // Y: (1 + 1 - 3 * 2^-53) * 2^0 == 1.99999999999999966693309261245303787291049957275390625
+    // F:      0x1.fffffffffffffp+0 == 1.9999999999999997779553950749686919152736663818359375
+    // The hexit E is 14 and even, while F is 15 and odd.
+
+    // just below (0 + 2^-53) * 2^-1022: decremented last digit, then appended three 9 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002470"
+     "3282292062327208828439643411068618252990130716238221279284125033775363510437593264991818081799618989828234772"
+     "2858865463328355177969898199387398005390939063150356595155702263922908583924491051844359318028499365361525003"
+     "1937045767824921936562366986365848075700158576926990370631192827955855133292783433840935197801553124659726357"
+     "9574622766465272827220056374006485499977096599470454020828166226237857393450736339007967761930577506740176324"
+     "6736009689513405355374585166611342237666786041621596804619144672918403005300575308490487653917113865916462395"
+     "2491262365388187963623937328042389101867234849766823508986338858792562830275599565752445550725518931369083625"
+     "4779186948667994968324049705821028513185451396213837722826145437693412532098591327667236328124999",
+        chars_format::fixed, 1080, errc::result_out_of_range, 0x0.0000000000000p+0},
+
+    // (0 + 2^-53) * 2^-1022 exactly
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002470"
+     "3282292062327208828439643411068618252990130716238221279284125033775363510437593264991818081799618989828234772"
+     "2858865463328355177969898199387398005390939063150356595155702263922908583924491051844359318028499365361525003"
+     "1937045767824921936562366986365848075700158576926990370631192827955855133292783433840935197801553124659726357"
+     "9574622766465272827220056374006485499977096599470454020828166226237857393450736339007967761930577506740176324"
+     "6736009689513405355374585166611342237666786041621596804619144672918403005300575308490487653917113865916462395"
+     "2491262365388187963623937328042389101867234849766823508986338858792562830275599565752445550725518931369083625"
+     "4779186948667994968324049705821028513185451396213837722826145437693412532098591327667236328125",
+        chars_format::fixed, 1077, errc::result_out_of_range, 0x0.0000000000000p+0},
+
+    // (0 + 2^-53) * 2^-1022 exactly, followed by a thousand 0 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002470"
+     "3282292062327208828439643411068618252990130716238221279284125033775363510437593264991818081799618989828234772"
+     "2858865463328355177969898199387398005390939063150356595155702263922908583924491051844359318028499365361525003"
+     "1937045767824921936562366986365848075700158576926990370631192827955855133292783433840935197801553124659726357"
+     "9574622766465272827220056374006485499977096599470454020828166226237857393450736339007967761930577506740176324"
+     "6736009689513405355374585166611342237666786041621596804619144672918403005300575308490487653917113865916462395"
+     "2491262365388187963623937328042389101867234849766823508986338858792562830275599565752445550725518931369083625"
+     "4779186948667994968324049705821028513185451396213837722826145437693412532098591327667236328125000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000",
+        chars_format::fixed, 2077, errc::result_out_of_range, 0x0.0000000000000p+0},
+
+    // above (0 + 2^-53) * 2^-1022: appended a thousand 0 digits followed by a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002470"
+     "3282292062327208828439643411068618252990130716238221279284125033775363510437593264991818081799618989828234772"
+     "2858865463328355177969898199387398005390939063150356595155702263922908583924491051844359318028499365361525003"
+     "1937045767824921936562366986365848075700158576926990370631192827955855133292783433840935197801553124659726357"
+     "9574622766465272827220056374006485499977096599470454020828166226237857393450736339007967761930577506740176324"
+     "6736009689513405355374585166611342237666786041621596804619144672918403005300575308490487653917113865916462395"
+     "2491262365388187963623937328042389101867234849766823508986338858792562830275599565752445550725518931369083625"
+     "4779186948667994968324049705821028513185451396213837722826145437693412532098591327667236328125000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00001",
+        chars_format::fixed, 2078, errc{}, 0x0.0000000000001p-1022},
+
+    // above (0 + 2^-53) * 2^-1022: appended a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002470"
+     "3282292062327208828439643411068618252990130716238221279284125033775363510437593264991818081799618989828234772"
+     "2858865463328355177969898199387398005390939063150356595155702263922908583924491051844359318028499365361525003"
+     "1937045767824921936562366986365848075700158576926990370631192827955855133292783433840935197801553124659726357"
+     "9574622766465272827220056374006485499977096599470454020828166226237857393450736339007967761930577506740176324"
+     "6736009689513405355374585166611342237666786041621596804619144672918403005300575308490487653917113865916462395"
+     "2491262365388187963623937328042389101867234849766823508986338858792562830275599565752445550725518931369083625"
+     "47791869486679949683240497058210285131854513962138377228261454376934125320985913276672363281251",
+        chars_format::fixed, 1078, errc{}, 0x0.0000000000001p-1022},
+
+    // above (0 + 2^-53) * 2^-1022: incremented last digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002470"
+     "3282292062327208828439643411068618252990130716238221279284125033775363510437593264991818081799618989828234772"
+     "2858865463328355177969898199387398005390939063150356595155702263922908583924491051844359318028499365361525003"
+     "1937045767824921936562366986365848075700158576926990370631192827955855133292783433840935197801553124659726357"
+     "9574622766465272827220056374006485499977096599470454020828166226237857393450736339007967761930577506740176324"
+     "6736009689513405355374585166611342237666786041621596804619144672918403005300575308490487653917113865916462395"
+     "2491262365388187963623937328042389101867234849766823508986338858792562830275599565752445550725518931369083625"
+     "4779186948667994968324049705821028513185451396213837722826145437693412532098591327667236328126",
+        chars_format::fixed, 1077, errc{}, 0x0.0000000000001p-1022},
+
+    // just below (0 + 1 - 3 * 2^-53) * 2^-1022: decremented last digit, then appended three 9 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072006419"
+     "9176395546258779936602667813027328296362349540005779643539444484102225369938322261431279727704724131030539099"
+     "2976863718870946851468024222968583977359185141028540361975476844303195813273469348201130421165308554532083149"
+     "3676067608324920106709384047261543474082573017216837765643921010648239116172158852475760231303527077156200284"
+     "1775343298712758123539074213191978739083589771549597066404661620550578925994422322342444472859570416955675758"
+     "5423752417124134805999073137808018133811049489046686648944255834488901008259721496147104204399198556535697531"
+     "0055231935448663898095485089604066035268185282450207861510244351362091237759797852153577038777504570568436147"
+     "5530270683064113556748943345076587312006145811358486831521563686919762403704226016998291015624999",
+        chars_format::fixed, 1080, errc{}, 0x0.ffffffffffffep-1022},
+
+    // (0 + 1 - 3 * 2^-53) * 2^-1022 exactly
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072006419"
+     "9176395546258779936602667813027328296362349540005779643539444484102225369938322261431279727704724131030539099"
+     "2976863718870946851468024222968583977359185141028540361975476844303195813273469348201130421165308554532083149"
+     "3676067608324920106709384047261543474082573017216837765643921010648239116172158852475760231303527077156200284"
+     "1775343298712758123539074213191978739083589771549597066404661620550578925994422322342444472859570416955675758"
+     "5423752417124134805999073137808018133811049489046686648944255834488901008259721496147104204399198556535697531"
+     "0055231935448663898095485089604066035268185282450207861510244351362091237759797852153577038777504570568436147"
+     "5530270683064113556748943345076587312006145811358486831521563686919762403704226016998291015625",
+        chars_format::fixed, 1077, errc{}, 0x0.ffffffffffffep-1022},
+
+    // (0 + 1 - 3 * 2^-53) * 2^-1022 exactly, followed by a thousand 0 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072006419"
+     "9176395546258779936602667813027328296362349540005779643539444484102225369938322261431279727704724131030539099"
+     "2976863718870946851468024222968583977359185141028540361975476844303195813273469348201130421165308554532083149"
+     "3676067608324920106709384047261543474082573017216837765643921010648239116172158852475760231303527077156200284"
+     "1775343298712758123539074213191978739083589771549597066404661620550578925994422322342444472859570416955675758"
+     "5423752417124134805999073137808018133811049489046686648944255834488901008259721496147104204399198556535697531"
+     "0055231935448663898095485089604066035268185282450207861510244351362091237759797852153577038777504570568436147"
+     "5530270683064113556748943345076587312006145811358486831521563686919762403704226016998291015625000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000",
+        chars_format::fixed, 2077, errc{}, 0x0.ffffffffffffep-1022},
+
+    // above (0 + 1 - 3 * 2^-53) * 2^-1022: appended a thousand 0 digits followed by a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072006419"
+     "9176395546258779936602667813027328296362349540005779643539444484102225369938322261431279727704724131030539099"
+     "2976863718870946851468024222968583977359185141028540361975476844303195813273469348201130421165308554532083149"
+     "3676067608324920106709384047261543474082573017216837765643921010648239116172158852475760231303527077156200284"
+     "1775343298712758123539074213191978739083589771549597066404661620550578925994422322342444472859570416955675758"
+     "5423752417124134805999073137808018133811049489046686648944255834488901008259721496147104204399198556535697531"
+     "0055231935448663898095485089604066035268185282450207861510244351362091237759797852153577038777504570568436147"
+     "5530270683064113556748943345076587312006145811358486831521563686919762403704226016998291015625000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00001",
+        chars_format::fixed, 2078, errc{}, 0x0.fffffffffffffp-1022},
+
+    // above (0 + 1 - 3 * 2^-53) * 2^-1022: appended a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072006419"
+     "9176395546258779936602667813027328296362349540005779643539444484102225369938322261431279727704724131030539099"
+     "2976863718870946851468024222968583977359185141028540361975476844303195813273469348201130421165308554532083149"
+     "3676067608324920106709384047261543474082573017216837765643921010648239116172158852475760231303527077156200284"
+     "1775343298712758123539074213191978739083589771549597066404661620550578925994422322342444472859570416955675758"
+     "5423752417124134805999073137808018133811049489046686648944255834488901008259721496147104204399198556535697531"
+     "0055231935448663898095485089604066035268185282450207861510244351362091237759797852153577038777504570568436147"
+     "55302706830641135567489433450765873120061458113584868315215636869197624037042260169982910156251",
+        chars_format::fixed, 1078, errc{}, 0x0.fffffffffffffp-1022},
+
+    // above (0 + 1 - 3 * 2^-53) * 2^-1022: incremented last digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072006419"
+     "9176395546258779936602667813027328296362349540005779643539444484102225369938322261431279727704724131030539099"
+     "2976863718870946851468024222968583977359185141028540361975476844303195813273469348201130421165308554532083149"
+     "3676067608324920106709384047261543474082573017216837765643921010648239116172158852475760231303527077156200284"
+     "1775343298712758123539074213191978739083589771549597066404661620550578925994422322342444472859570416955675758"
+     "5423752417124134805999073137808018133811049489046686648944255834488901008259721496147104204399198556535697531"
+     "0055231935448663898095485089604066035268185282450207861510244351362091237759797852153577038777504570568436147"
+     "5530270683064113556748943345076587312006145811358486831521563686919762403704226016998291015626",
+        chars_format::fixed, 1077, errc{}, 0x0.fffffffffffffp-1022},
+
+    // just below (1 + 2^-53) * 2^-1022: decremented last digit, then appended three 9 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072016301"
+     "2305563795567615250361241457301801308322872404958664760675944619203679411688695321398552054903200090343478188"
+     "4412325572184367563347617020518175998922941393629966742598285899994830148971433555578567693279306015978183162"
+     "1424250679624607852958851992724935776883207324924799248168692322471659649343292587839501022509739575795105716"
+     "0073834364573849432419299709217920738991976169431413149717326525502008499797367678374315520581880443916381057"
+     "2367791175177756227497413804253387084478193655533073867420834526162513029462022730109054820067654020201547112"
+     "0020281397001415752591234401773622442737124681517501897455599786532342558862196115163359241679580296044770649"
+     "4647018477736093430045142168360701364747951396213837722826145437693412532098591327667236328124999",
+        chars_format::fixed, 1080, errc{}, 0x1.0000000000000p-1022},
+
+    // (1 + 2^-53) * 2^-1022 exactly
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072016301"
+     "2305563795567615250361241457301801308322872404958664760675944619203679411688695321398552054903200090343478188"
+     "4412325572184367563347617020518175998922941393629966742598285899994830148971433555578567693279306015978183162"
+     "1424250679624607852958851992724935776883207324924799248168692322471659649343292587839501022509739575795105716"
+     "0073834364573849432419299709217920738991976169431413149717326525502008499797367678374315520581880443916381057"
+     "2367791175177756227497413804253387084478193655533073867420834526162513029462022730109054820067654020201547112"
+     "0020281397001415752591234401773622442737124681517501897455599786532342558862196115163359241679580296044770649"
+     "4647018477736093430045142168360701364747951396213837722826145437693412532098591327667236328125",
+        chars_format::fixed, 1077, errc{}, 0x1.0000000000000p-1022},
+
+    // (1 + 2^-53) * 2^-1022 exactly, followed by a thousand 0 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072016301"
+     "2305563795567615250361241457301801308322872404958664760675944619203679411688695321398552054903200090343478188"
+     "4412325572184367563347617020518175998922941393629966742598285899994830148971433555578567693279306015978183162"
+     "1424250679624607852958851992724935776883207324924799248168692322471659649343292587839501022509739575795105716"
+     "0073834364573849432419299709217920738991976169431413149717326525502008499797367678374315520581880443916381057"
+     "2367791175177756227497413804253387084478193655533073867420834526162513029462022730109054820067654020201547112"
+     "0020281397001415752591234401773622442737124681517501897455599786532342558862196115163359241679580296044770649"
+     "4647018477736093430045142168360701364747951396213837722826145437693412532098591327667236328125000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000",
+        chars_format::fixed, 2077, errc{}, 0x1.0000000000000p-1022},
+
+    // above (1 + 2^-53) * 2^-1022: appended a thousand 0 digits followed by a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072016301"
+     "2305563795567615250361241457301801308322872404958664760675944619203679411688695321398552054903200090343478188"
+     "4412325572184367563347617020518175998922941393629966742598285899994830148971433555578567693279306015978183162"
+     "1424250679624607852958851992724935776883207324924799248168692322471659649343292587839501022509739575795105716"
+     "0073834364573849432419299709217920738991976169431413149717326525502008499797367678374315520581880443916381057"
+     "2367791175177756227497413804253387084478193655533073867420834526162513029462022730109054820067654020201547112"
+     "0020281397001415752591234401773622442737124681517501897455599786532342558862196115163359241679580296044770649"
+     "4647018477736093430045142168360701364747951396213837722826145437693412532098591327667236328125000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00001",
+        chars_format::fixed, 2078, errc{}, 0x1.0000000000001p-1022},
+
+    // above (1 + 2^-53) * 2^-1022: appended a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072016301"
+     "2305563795567615250361241457301801308322872404958664760675944619203679411688695321398552054903200090343478188"
+     "4412325572184367563347617020518175998922941393629966742598285899994830148971433555578567693279306015978183162"
+     "1424250679624607852958851992724935776883207324924799248168692322471659649343292587839501022509739575795105716"
+     "0073834364573849432419299709217920738991976169431413149717326525502008499797367678374315520581880443916381057"
+     "2367791175177756227497413804253387084478193655533073867420834526162513029462022730109054820067654020201547112"
+     "0020281397001415752591234401773622442737124681517501897455599786532342558862196115163359241679580296044770649"
+     "46470184777360934300451421683607013647479513962138377228261454376934125320985913276672363281251",
+        chars_format::fixed, 1078, errc{}, 0x1.0000000000001p-1022},
+
+    // above (1 + 2^-53) * 2^-1022: incremented last digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000022250738585072016301"
+     "2305563795567615250361241457301801308322872404958664760675944619203679411688695321398552054903200090343478188"
+     "4412325572184367563347617020518175998922941393629966742598285899994830148971433555578567693279306015978183162"
+     "1424250679624607852958851992724935776883207324924799248168692322471659649343292587839501022509739575795105716"
+     "0073834364573849432419299709217920738991976169431413149717326525502008499797367678374315520581880443916381057"
+     "2367791175177756227497413804253387084478193655533073867420834526162513029462022730109054820067654020201547112"
+     "0020281397001415752591234401773622442737124681517501897455599786532342558862196115163359241679580296044770649"
+     "4647018477736093430045142168360701364747951396213837722826145437693412532098591327667236328126",
+        chars_format::fixed, 1077, errc{}, 0x1.0000000000001p-1022},
+
+    // just below (1 + 1 - 3 * 2^-53) * 2^-1022: decremented last digit, then appended three 9 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144020250"
+     "8199667279499186358524265859260511351695091228726223124931264069530541271189424317838013700808305231545782515"
+     "4530323827726959236845743044099361970891187471508150509418060480375117378320411851935338796416115205148741308"
+     "3163272520124606023105869053620631175265621765214646643181420505164043632222668006474326056011713528291579642"
+     "2274554896821334728738317548403413978098469341510556195293821919814730032341053661708792231510873354131880491"
+     "1055533902788485678121901775450062980622457102958163711745945687733011032421168917765671370549738710820782247"
+     "7584250967061891687062782163335299376138075114200886249979505279101870966346394401564490729731565935244123171"
+     "5398102212132212018470035807616260163568645811358486831521563686919762403704226016998291015624999",
+        chars_format::fixed, 1080, errc{}, 0x1.ffffffffffffep-1022},
+
+    // (1 + 1 - 3 * 2^-53) * 2^-1022 exactly
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144020250"
+     "8199667279499186358524265859260511351695091228726223124931264069530541271189424317838013700808305231545782515"
+     "4530323827726959236845743044099361970891187471508150509418060480375117378320411851935338796416115205148741308"
+     "3163272520124606023105869053620631175265621765214646643181420505164043632222668006474326056011713528291579642"
+     "2274554896821334728738317548403413978098469341510556195293821919814730032341053661708792231510873354131880491"
+     "1055533902788485678121901775450062980622457102958163711745945687733011032421168917765671370549738710820782247"
+     "7584250967061891687062782163335299376138075114200886249979505279101870966346394401564490729731565935244123171"
+     "5398102212132212018470035807616260163568645811358486831521563686919762403704226016998291015625",
+        chars_format::fixed, 1077, errc{}, 0x1.ffffffffffffep-1022},
+
+    // (1 + 1 - 3 * 2^-53) * 2^-1022 exactly, followed by a thousand 0 digits
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144020250"
+     "8199667279499186358524265859260511351695091228726223124931264069530541271189424317838013700808305231545782515"
+     "4530323827726959236845743044099361970891187471508150509418060480375117378320411851935338796416115205148741308"
+     "3163272520124606023105869053620631175265621765214646643181420505164043632222668006474326056011713528291579642"
+     "2274554896821334728738317548403413978098469341510556195293821919814730032341053661708792231510873354131880491"
+     "1055533902788485678121901775450062980622457102958163711745945687733011032421168917765671370549738710820782247"
+     "7584250967061891687062782163335299376138075114200886249979505279101870966346394401564490729731565935244123171"
+     "5398102212132212018470035807616260163568645811358486831521563686919762403704226016998291015625000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000",
+        chars_format::fixed, 2077, errc{}, 0x1.ffffffffffffep-1022},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^-1022: appended a thousand 0 digits followed by a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144020250"
+     "8199667279499186358524265859260511351695091228726223124931264069530541271189424317838013700808305231545782515"
+     "4530323827726959236845743044099361970891187471508150509418060480375117378320411851935338796416115205148741308"
+     "3163272520124606023105869053620631175265621765214646643181420505164043632222668006474326056011713528291579642"
+     "2274554896821334728738317548403413978098469341510556195293821919814730032341053661708792231510873354131880491"
+     "1055533902788485678121901775450062980622457102958163711745945687733011032421168917765671370549738710820782247"
+     "7584250967061891687062782163335299376138075114200886249979505279101870966346394401564490729731565935244123171"
+     "5398102212132212018470035807616260163568645811358486831521563686919762403704226016998291015625000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00001",
+        chars_format::fixed, 2078, errc{}, 0x1.fffffffffffffp-1022},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^-1022: appended a 1 digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144020250"
+     "8199667279499186358524265859260511351695091228726223124931264069530541271189424317838013700808305231545782515"
+     "4530323827726959236845743044099361970891187471508150509418060480375117378320411851935338796416115205148741308"
+     "3163272520124606023105869053620631175265621765214646643181420505164043632222668006474326056011713528291579642"
+     "2274554896821334728738317548403413978098469341510556195293821919814730032341053661708792231510873354131880491"
+     "1055533902788485678121901775450062980622457102958163711745945687733011032421168917765671370549738710820782247"
+     "7584250967061891687062782163335299376138075114200886249979505279101870966346394401564490729731565935244123171"
+     "53981022121322120184700358076162601635686458113584868315215636869197624037042260169982910156251",
+        chars_format::fixed, 1078, errc{}, 0x1.fffffffffffffp-1022},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^-1022: incremented last digit
+    {"0."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044501477170144020250"
+     "8199667279499186358524265859260511351695091228726223124931264069530541271189424317838013700808305231545782515"
+     "4530323827726959236845743044099361970891187471508150509418060480375117378320411851935338796416115205148741308"
+     "3163272520124606023105869053620631175265621765214646643181420505164043632222668006474326056011713528291579642"
+     "2274554896821334728738317548403413978098469341510556195293821919814730032341053661708792231510873354131880491"
+     "1055533902788485678121901775450062980622457102958163711745945687733011032421168917765671370549738710820782247"
+     "7584250967061891687062782163335299376138075114200886249979505279101870966346394401564490729731565935244123171"
+     "5398102212132212018470035807616260163568645811358486831521563686919762403704226016998291015626",
+        chars_format::fixed, 1077, errc{}, 0x1.fffffffffffffp-1022},
+
+    // just below (1 + 2^-53) * 2^-33: decremented last digit, then appended three 9 digits
+    {"0.00000000011641532182693482737782207114105741986576081359316958696581423282623291015624999", chars_format::fixed,
+        91, errc{}, 0x1.0000000000000p-33},
+
+    // (1 + 2^-53) * 2^-33 exactly
+    {"0.00000000011641532182693482737782207114105741986576081359316958696581423282623291015625", chars_format::fixed,
+        88, errc{}, 0x1.0000000000000p-33},
+
+    // (1 + 2^-53) * 2^-33 exactly, followed by a thousand 0 digits
+    {"0."
+     "0000000001164153218269348273778220711410574198657608135931695869658142328262329101562500000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+        chars_format::fixed, 1088, errc{}, 0x1.0000000000000p-33},
+
+    // above (1 + 2^-53) * 2^-33: appended a thousand 0 digits followed by a 1 digit
+    {"0."
+     "0000000001164153218269348273778220711410574198657608135931695869658142328262329101562500000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
+        chars_format::fixed, 1089, errc{}, 0x1.0000000000001p-33},
+
+    // above (1 + 2^-53) * 2^-33: appended a 1 digit
+    {"0.000000000116415321826934827377822071141057419865760813593169586965814232826232910156251", chars_format::fixed,
+        89, errc{}, 0x1.0000000000001p-33},
+
+    // above (1 + 2^-53) * 2^-33: incremented last digit
+    {"0.00000000011641532182693482737782207114105741986576081359316958696581423282623291015626", chars_format::fixed,
+        88, errc{}, 0x1.0000000000001p-33},
+
+    // just below (1 + 1 - 3 * 2^-53) * 2^-33: decremented last digit, then appended three 9 digits
+    {"0.00000000023283064365386959013215878657682774040271755922049123910255730152130126953124999", chars_format::fixed,
+        91, errc{}, 0x1.ffffffffffffep-33},
+
+    // (1 + 1 - 3 * 2^-53) * 2^-33 exactly
+    {"0.00000000023283064365386959013215878657682774040271755922049123910255730152130126953125", chars_format::fixed,
+        88, errc{}, 0x1.ffffffffffffep-33},
+
+    // (1 + 1 - 3 * 2^-53) * 2^-33 exactly, followed by a thousand 0 digits
+    {"0."
+     "0000000002328306436538695901321587865768277404027175592204912391025573015213012695312500000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+        chars_format::fixed, 1088, errc{}, 0x1.ffffffffffffep-33},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^-33: appended a thousand 0 digits followed by a 1 digit
+    {"0."
+     "0000000002328306436538695901321587865768277404027175592204912391025573015213012695312500000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001",
+        chars_format::fixed, 1089, errc{}, 0x1.fffffffffffffp-33},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^-33: appended a 1 digit
+    {"0.000000000232830643653869590132158786576827740402717559220491239102557301521301269531251", chars_format::fixed,
+        89, errc{}, 0x1.fffffffffffffp-33},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^-33: incremented last digit
+    {"0.00000000023283064365386959013215878657682774040271755922049123910255730152130126953126", chars_format::fixed,
+        88, errc{}, 0x1.fffffffffffffp-33},
+
+    // just below (1 + 2^-53) * 2^0: decremented last digit, then appended three 9 digits
+    {"1.00000000000000011102230246251565404236316680908203124999", chars_format::fixed, 58, errc{},
+        0x1.0000000000000p+0},
+
+    // (1 + 2^-53) * 2^0 exactly
+    {"1.00000000000000011102230246251565404236316680908203125", chars_format::fixed, 55, errc{}, 0x1.0000000000000p+0},
+
+    // (1 + 2^-53) * 2^0 exactly, followed by a thousand 0 digits
+    {"1."
+     "0000000000000001110223024625156540423631668090820312500000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "000000000000000000000000000000000000000000000000000000000000000000000000",
+        chars_format::fixed, 1055, errc{}, 0x1.0000000000000p+0},
+
+    // above (1 + 2^-53) * 2^0: appended a thousand 0 digits followed by a 1 digit
+    {"1."
+     "0000000000000001110223024625156540423631668090820312500000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000001",
+        chars_format::fixed, 1056, errc{}, 0x1.0000000000001p+0},
+
+    // above (1 + 2^-53) * 2^0: appended a 1 digit
+    {"1.000000000000000111022302462515654042363166809082031251", chars_format::fixed, 56, errc{}, 0x1.0000000000001p+0},
+
+    // above (1 + 2^-53) * 2^0: incremented last digit
+    {"1.00000000000000011102230246251565404236316680908203126", chars_format::fixed, 55, errc{}, 0x1.0000000000001p+0},
+
+    // just below (1 + 1 - 3 * 2^-53) * 2^0: decremented last digit, then appended three 9 digits
+    {"1.99999999999999966693309261245303787291049957275390624999", chars_format::fixed, 58, errc{},
+        0x1.ffffffffffffep+0},
+
+    // (1 + 1 - 3 * 2^-53) * 2^0 exactly
+    {"1.99999999999999966693309261245303787291049957275390625", chars_format::fixed, 55, errc{}, 0x1.ffffffffffffep+0},
+
+    // (1 + 1 - 3 * 2^-53) * 2^0 exactly, followed by a thousand 0 digits
+    {"1."
+     "9999999999999996669330926124530378729104995727539062500000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "000000000000000000000000000000000000000000000000000000000000000000000000",
+        chars_format::fixed, 1055, errc{}, 0x1.ffffffffffffep+0},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^0: appended a thousand 0 digits followed by a 1 digit
+    {"1."
+     "9999999999999996669330926124530378729104995727539062500000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000001",
+        chars_format::fixed, 1056, errc{}, 0x1.fffffffffffffp+0},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^0: appended a 1 digit
+    {"1.999999999999999666933092612453037872910499572753906251", chars_format::fixed, 56, errc{}, 0x1.fffffffffffffp+0},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^0: incremented last digit
+    {"1.99999999999999966693309261245303787291049957275390626", chars_format::fixed, 55, errc{}, 0x1.fffffffffffffp+0},
+
+    // just below (1 + 2^-53) * 2^33: decremented last digit, then appended three 9 digits
+    {"8589934592.00000095367431640624999", chars_format::fixed, 34, errc{}, 0x1.0000000000000p+33},
+
+    // (1 + 2^-53) * 2^33 exactly
+    {"8589934592.00000095367431640625", chars_format::fixed, 31, errc{}, 0x1.0000000000000p+33},
+
+    // (1 + 2^-53) * 2^33 exactly, followed by a thousand 0 digits
+    {"8589934592."
+     "0000009536743164062500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "000000000000000000000000000000000000000",
+        chars_format::fixed, 1031, errc{}, 0x1.0000000000000p+33},
+
+    // above (1 + 2^-53) * 2^33: appended a thousand 0 digits followed by a 1 digit
+    {"8589934592."
+     "0000009536743164062500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000001",
+        chars_format::fixed, 1032, errc{}, 0x1.0000000000001p+33},
+
+    // above (1 + 2^-53) * 2^33: appended a 1 digit
+    {"8589934592.000000953674316406251", chars_format::fixed, 32, errc{}, 0x1.0000000000001p+33},
+
+    // above (1 + 2^-53) * 2^33: incremented last digit
+    {"8589934592.00000095367431640626", chars_format::fixed, 31, errc{}, 0x1.0000000000001p+33},
+
+    // just below (1 + 1 - 3 * 2^-53) * 2^33: decremented last digit, then appended three 9 digits
+    {"17179869183.99999713897705078124999", chars_format::fixed, 35, errc{}, 0x1.ffffffffffffep+33},
+
+    // (1 + 1 - 3 * 2^-53) * 2^33 exactly
+    {"17179869183.99999713897705078125", chars_format::fixed, 32, errc{}, 0x1.ffffffffffffep+33},
+
+    // (1 + 1 - 3 * 2^-53) * 2^33 exactly, followed by a thousand 0 digits
+    {"17179869183."
+     "9999971389770507812500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "000000000000000000000000000000000000000",
+        chars_format::fixed, 1032, errc{}, 0x1.ffffffffffffep+33},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^33: appended a thousand 0 digits followed by a 1 digit
+    {"17179869183."
+     "9999971389770507812500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000001",
+        chars_format::fixed, 1033, errc{}, 0x1.fffffffffffffp+33},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^33: appended a 1 digit
+    {"17179869183.999997138977050781251", chars_format::fixed, 33, errc{}, 0x1.fffffffffffffp+33},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^33: incremented last digit
+    {"17179869183.99999713897705078126", chars_format::fixed, 32, errc{}, 0x1.fffffffffffffp+33},
+
+    // just below (1 + 2^-53) * 2^77: decremented last digit, then appended three 9 digits
+    {"151115727451828663615487.999", chars_format::fixed, 28, errc{}, 0x1.0000000000000p+77},
+
+    // (1 + 2^-53) * 2^77 exactly
+    {"151115727451828663615488", chars_format::fixed, 24, errc{}, 0x1.0000000000000p+77},
+
+    // (1 + 2^-53) * 2^77 exactly, followed by a thousand 0 digits
+    {"151115727451828663615488."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000",
+        chars_format::fixed, 1025, errc{}, 0x1.0000000000000p+77},
+
+    // above (1 + 2^-53) * 2^77: appended a thousand 0 digits followed by a 1 digit
+    {"151115727451828663615488."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00000000000000000001",
+        chars_format::fixed, 1026, errc{}, 0x1.0000000000001p+77},
+
+    // above (1 + 2^-53) * 2^77: appended a 1 digit
+    {"151115727451828663615488.1", chars_format::fixed, 26, errc{}, 0x1.0000000000001p+77},
+
+    // above (1 + 2^-53) * 2^77: incremented last digit
+    {"151115727451828663615489", chars_format::fixed, 24, errc{}, 0x1.0000000000001p+77},
+
+    // just below (1 + 1 - 3 * 2^-53) * 2^77: decremented last digit, then appended three 9 digits
+    {"302231454903657243344895.999", chars_format::fixed, 28, errc{}, 0x1.ffffffffffffep+77},
+
+    // (1 + 1 - 3 * 2^-53) * 2^77 exactly
+    {"302231454903657243344896", chars_format::fixed, 24, errc{}, 0x1.ffffffffffffep+77},
+
+    // (1 + 1 - 3 * 2^-53) * 2^77 exactly, followed by a thousand 0 digits
+    {"302231454903657243344896."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000",
+        chars_format::fixed, 1025, errc{}, 0x1.ffffffffffffep+77},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^77: appended a thousand 0 digits followed by a 1 digit
+    {"302231454903657243344896."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00000000000000000001",
+        chars_format::fixed, 1026, errc{}, 0x1.fffffffffffffp+77},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^77: appended a 1 digit
+    {"302231454903657243344896.1", chars_format::fixed, 26, errc{}, 0x1.fffffffffffffp+77},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^77: incremented last digit
+    {"302231454903657243344897", chars_format::fixed, 24, errc{}, 0x1.fffffffffffffp+77},
+
+    // just below (1 + 2^-53) * 2^1023: decremented last digit, then appended three 9 digits
+    {"8988465674311580536566680721305029496276241413130815897397134275615404541548669375241369800602409693534988440"
+     "3114202125541629105369684531108613657287705365884742938136589844238179474556051429647415148697857438797685859"
+     "063890851407391008830874765563025951597582513936655578157348020066364210154316532161708031.999",
+        chars_format::fixed, 312, errc{}, 0x1.0000000000000p+1023},
+
+    // (1 + 2^-53) * 2^1023 exactly
+    {"8988465674311580536566680721305029496276241413130815897397134275615404541548669375241369800602409693534988440"
+     "3114202125541629105369684531108613657287705365884742938136589844238179474556051429647415148697857438797685859"
+     "063890851407391008830874765563025951597582513936655578157348020066364210154316532161708032",
+        chars_format::fixed, 308, errc{}, 0x1.0000000000000p+1023},
+
+    // (1 + 2^-53) * 2^1023 exactly, followed by a thousand 0 digits
+    {"8988465674311580536566680721305029496276241413130815897397134275615404541548669375241369800602409693534988440"
+     "3114202125541629105369684531108613657287705365884742938136589844238179474556051429647415148697857438797685859"
+     "063890851407391008830874765563025951597582513936655578157348020066364210154316532161708032."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000",
+        chars_format::fixed, 1309, errc{}, 0x1.0000000000000p+1023},
+
+    // above (1 + 2^-53) * 2^1023: appended a thousand 0 digits followed by a 1 digit
+    {"8988465674311580536566680721305029496276241413130815897397134275615404541548669375241369800602409693534988440"
+     "3114202125541629105369684531108613657287705365884742938136589844238179474556051429647415148697857438797685859"
+     "063890851407391008830874765563025951597582513936655578157348020066364210154316532161708032."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00000000000000000001",
+        chars_format::fixed, 1310, errc{}, 0x1.0000000000001p+1023},
+
+    // above (1 + 2^-53) * 2^1023: appended a 1 digit
+    {"8988465674311580536566680721305029496276241413130815897397134275615404541548669375241369800602409693534988440"
+     "3114202125541629105369684531108613657287705365884742938136589844238179474556051429647415148697857438797685859"
+     "063890851407391008830874765563025951597582513936655578157348020066364210154316532161708032.1",
+        chars_format::fixed, 310, errc{}, 0x1.0000000000001p+1023},
+
+    // above (1 + 2^-53) * 2^1023: incremented last digit
+    {"8988465674311580536566680721305029496276241413130815897397134275615404541548669375241369800602409693534988440"
+     "3114202125541629105369684531108613657287705365884742938136589844238179474556051429647415148697857438797685859"
+     "063890851407391008830874765563025951597582513936655578157348020066364210154316532161708033",
+        chars_format::fixed, 308, errc{}, 0x1.0000000000001p+1023},
+
+    // just below (1 + 1 - 3 * 2^-53) * 2^1023: decremented last digit, then appended three 9 digits
+    {"1797693134862315608353258760581052985162070023416521662616611746258695532672923265745300992879465492467506314"
+     "9033587701752208710592698796290627760473556921329019091915239418047621712533496094635638726128664019802903779"
+     "9514183602981511756283727771403830521483963923935633133642802139091669457927874464075218943.999",
+        chars_format::fixed, 313, errc{}, 0x1.ffffffffffffep+1023},
+
+    // (1 + 1 - 3 * 2^-53) * 2^1023 exactly
+    {"1797693134862315608353258760581052985162070023416521662616611746258695532672923265745300992879465492467506314"
+     "9033587701752208710592698796290627760473556921329019091915239418047621712533496094635638726128664019802903779"
+     "9514183602981511756283727771403830521483963923935633133642802139091669457927874464075218944",
+        chars_format::fixed, 309, errc{}, 0x1.ffffffffffffep+1023},
+
+    // (1 + 1 - 3 * 2^-53) * 2^1023 exactly, followed by a thousand 0 digits
+    {"1797693134862315608353258760581052985162070023416521662616611746258695532672923265745300992879465492467506314"
+     "9033587701752208710592698796290627760473556921329019091915239418047621712533496094635638726128664019802903779"
+     "9514183602981511756283727771403830521483963923935633133642802139091669457927874464075218944."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000",
+        chars_format::fixed, 1310, errc{}, 0x1.ffffffffffffep+1023},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^1023: appended a thousand 0 digits followed by a 1 digit
+    {"1797693134862315608353258760581052985162070023416521662616611746258695532672923265745300992879465492467506314"
+     "9033587701752208710592698796290627760473556921329019091915239418047621712533496094635638726128664019802903779"
+     "9514183602981511756283727771403830521483963923935633133642802139091669457927874464075218944."
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "00000000000000000001",
+        chars_format::fixed, 1311, errc{}, 0x1.fffffffffffffp+1023},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^1023: appended a 1 digit
+    {"1797693134862315608353258760581052985162070023416521662616611746258695532672923265745300992879465492467506314"
+     "9033587701752208710592698796290627760473556921329019091915239418047621712533496094635638726128664019802903779"
+     "9514183602981511756283727771403830521483963923935633133642802139091669457927874464075218944.1",
+        chars_format::fixed, 311, errc{}, 0x1.fffffffffffffp+1023},
+
+    // above (1 + 1 - 3 * 2^-53) * 2^1023: incremented last digit
+    {"1797693134862315608353258760581052985162070023416521662616611746258695532672923265745300992879465492467506314"
+     "9033587701752208710592698796290627760473556921329019091915239418047621712533496094635638726128664019802903779"
+     "9514183602981511756283727771403830521483963923935633133642802139091669457927874464075218945",
+        chars_format::fixed, 309, errc{}, 0x1.fffffffffffffp+1023},
+
+    // VSO-852024 also affected hexfloats.
+    {"0.00000000000008p-1022", chars_format::hex, 22, errc::result_out_of_range, 0x0.0000000000000p+0},
+    {"0."
+     "0000000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000001p-1022",
+        chars_format::hex, 1023, errc{}, 0x0.0000000000001p-1022},
+
+    {"0.ffffffffffffe8p-1022", chars_format::hex, 22, errc{}, 0x0.ffffffffffffep-1022},
+    {"0."
+     "ffffffffffffe800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000001p-1022",
+        chars_format::hex, 1023, errc{}, 0x0.fffffffffffffp-1022},
+
+    {"1.00000000000008p+0", chars_format::hex, 19, errc{}, 0x1.0000000000000p+0},
+    {"1."
+     "0000000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000001p+0",
+        chars_format::hex, 1020, errc{}, 0x1.0000000000001p+0},
+
+    {"1.ffffffffffffe8p+0", chars_format::hex, 19, errc{}, 0x1.ffffffffffffep+0},
+    {"1."
+     "ffffffffffffe800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000001p+0",
+        chars_format::hex, 1020, errc{}, 0x1.fffffffffffffp+0},
+
+    {"1.00000000000008p+1023", chars_format::hex, 22, errc{}, 0x1.0000000000000p+1023},
+    {"1."
+     "0000000000000800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000001p+1023",
+        chars_format::hex, 1023, errc{}, 0x1.0000000000001p+1023},
+
+    {"1.ffffffffffffe8p+1023", chars_format::hex, 22, errc{}, 0x1.ffffffffffffep+1023},
+    {"1."
+     "ffffffffffffe800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+     "0000000000000000000000000000000001p+1023",
+        chars_format::hex, 1023, errc{}, 0x1.fffffffffffffp+1023},
+
+    // VSO-733765 "<charconv>: [Feedback] double std::from_chars behavior on exponent out of range"
+    // LWG-3081 "Floating point from_chars API does not distinguish between overflow and underflow"
+    // These test cases exercise every overflow/underflow codepath.
+    {"1e+1000", chars_format::scientific, 7, errc::result_out_of_range, double_inf},
+    {"1e-1000", chars_format::scientific, 7, errc::result_out_of_range, 0.0},
+    {"1.fffffffffffff8p+1023", chars_format::hex, 22, errc::result_out_of_range, double_inf},
+    {"1e+2000", chars_format::scientific, 7, errc::result_out_of_range, double_inf},
+    {"1e-2000", chars_format::scientific, 7, errc::result_out_of_range, 0.0},
+    {"1e+9999", chars_format::scientific, 7, errc::result_out_of_range, double_inf},
+    {"1e-9999", chars_format::scientific, 7, errc::result_out_of_range, 0.0},
+    {"10e+5199", chars_format::scientific, 8, errc::result_out_of_range, double_inf},
+    {"0.001e-5199", chars_format::scientific, 11, errc::result_out_of_range, 0.0},
+};
+
+#endif // DOUBLE_FROM_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_general_precision_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_general_precision_to_chars_test_cases.hpp
new file mode 100644
index 0000000..a263ba0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_general_precision_to_chars_test_cases.hpp
@@ -0,0 +1,5063 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef DOUBLE_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
+#define DOUBLE_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+// C11 7.21.6.1 "The fprintf function"/8:
+
+// "Then, if a conversion with style E would have an exponent of X:
+// - if P > X >= -4, the conversion is with style f (or F) and precision P - (X + 1).
+// - otherwise, the conversion is with style e (or E) and precision P - 1."
+
+// "Finally, [...] any trailing zeros are removed from the fractional portion of the result
+// and the decimal-point character is removed if there is no fractional portion remaining."
+
+inline constexpr DoublePrecisionToCharsTestCase double_general_precision_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0, chars_format::general, 4, "0"},
+    {-0.0, chars_format::general, 4, "-0"},
+    {double_inf, chars_format::general, 4, "inf"},
+    {-double_inf, chars_format::general, 4, "-inf"},
+    {double_nan, chars_format::general, 4, "nan"},
+    {-double_nan, chars_format::general, 4, "-nan(ind)"},
+    {double_nan_payload, chars_format::general, 4, "nan"},
+    {-double_nan_payload, chars_format::general, 4, "-nan"},
+    {1.729, chars_format::general, 4, "1.729"},
+    {-1.729, chars_format::general, 4, "-1.729"},
+
+    // Test corner cases.
+    {0x0.0000000000001p-1022, chars_format::general, 1000,
+        "4."
+        "94065645841246544176568792868221372365059802614324764425585682500675507270208751865299836361635992379796564695"
+        "44571773092665671035593979639877479601078187812630071319031140452784581716784898210368871863605699873072305000"
+        "63874091535649843873124733972731696151400317153853980741262385655911710266585566867681870395603106249319452715"
+        "91492455329305456544401127480129709999541931989409080416563324524757147869014726780159355238611550134803526493"
+        "47201937902681071074917033322268447533357208324319360923828934583680601060115061698097530783422773183292479049"
+        "82524730776375927247874656084778203734469699533647017972677717585125660551199131504891101451037862738167250955"
+        "837389733598993664809941164205702637090279242767544565229087538682506419718265533447265625"
+        "e-324"}, // min subnormal
+    {0x0.fffffffffffffp-1022, chars_format::general, 1000,
+        "2."
+        "22507385850720088902458687608585988765042311224095946549352480256244000922823569517877588880375915526423097809"
+        "50434312085877387158357291821993020294379224223559819827501242041788969571311791082261043971979604000454897391"
+        "93807919893608152561311337614984204327175103362739154978273159414382813627511383860409424946494228631669542910"
+        "50802018159266421349966065178030950759130587198464239060686371020051087232827846788436319445158661350412234790"
+        "14792369585208321597621066375401613736583044193603714778355306682834535634005074073040135602968046375918583163"
+        "12422452159926254649430083685186171942241764645513713542013221703137049658321015465406803539741790602258950302"
+        "3501937519773030945763173210852507299305089761582519159720757232455434770912461317493580281734466552734375"
+        "e-308"}, // max subnormal
+    {0x1p-1022, chars_format::general, 1000,
+        "2."
+        "22507385850720138309023271733240406421921598046233183055332741688720443481391819585428315901251102056406733973"
+        "10358110051524341615534601088560123853777188211307779935320023304796101474425836360719215650469425037342083752"
+        "50806650616658158948720491179968591639648500635908770118304874799780887753749949451580451605050915399856582470"
+        "81864511353793580499211598108576605199243335211435239014879569960959128889160299264151106346631339366347758651"
+        "30293717620473256317814856643508721228286376420448468114076139114770628016898532441100241614474216185671661505"
+        "40154285084716752901903161322778896729707373123334086988983175067838846926092773977972858659654941091369095406"
+        "136467568702398678315290680984617210924625396728515625e-308"}, // min normal
+    {0x1.fffffffffffffp+1023, chars_format::general, 1000,
+        "17976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045895"
+        "35143824642343213268894641827684675467035375169860499105765512820762454900903893289440758685084551339423045832"
+        "36903222948165808559332123348274797826204144723168738177180919299881250404026184124858368"}, // max normal
+
+    {0x0.0000000000001p-1022, chars_format::general, 6, "4.94066e-324"}, // min subnormal
+    {0x0.fffffffffffffp-1022, chars_format::general, 6, "2.22507e-308"}, // max subnormal
+    {0x1p-1022, chars_format::general, 6, "2.22507e-308"}, // min normal
+    {0x1.fffffffffffffp+1023, chars_format::general, 6, "1.79769e+308"}, // max normal
+
+    // Test maximum-length output (excluding minus signs).
+    {0x1.fffffffffffffp-1022, chars_format::general, 1000,
+        "4."
+        "45014771701440227211481959341826395186963909270329129604685221944964444404215389103305904781627017582829831782"
+        "60792422137401728773891892910553144148156412434867599762821265346585071045737627442980259622449029037796981144"
+        "44614570510266311510031828794952795966823603998647925096578034214163701381261333311989876551545144031526125381"
+        "32666529513060001849177663286607555958373922409899478075565940981010216121988146052587425791790000716759993441"
+        "45086087205681577915435923018910334964869420614052182892431445797605163650903606514140377217442262561590244668"
+        "52576737244643007551333245007965068671949137768847800530996396770975896584413789443379662199396731693628045708"
+        "4866613206797017728916080020698679408551343728867675409720757232455434770912461317493580281734466552734375e-"
+        "308"}, // scientific, happens to be the same length as max subnormal
+    {0x1.fffffffffffffp-14, chars_format::general, 1000,
+        "0.000122070312499999986447472843931194574906839989125728607177734375"}, // fixed
+
+    // Test varying precision. Negative precision requests P == 6. Zero precision requests P == 1.
+    // Here, the scientific exponent X is 0.
+    // Therefore, fixed notation is always chosen with precision P - (X + 1) == P - 1.
+    {0x1.b04p0, chars_format::general, -2, "1.68848"},
+    {0x1.b04p0, chars_format::general, -1, "1.68848"},
+    {0x1.b04p0, chars_format::general, 0, "2"},
+    {0x1.b04p0, chars_format::general, 1, "2"}, // fixed notation trims decimal point
+    {0x1.b04p0, chars_format::general, 2, "1.7"},
+    {0x1.b04p0, chars_format::general, 3, "1.69"},
+    {0x1.b04p0, chars_format::general, 4, "1.688"},
+    {0x1.b04p0, chars_format::general, 5, "1.6885"},
+    {0x1.b04p0, chars_format::general, 6, "1.68848"},
+    {0x1.b04p0, chars_format::general, 7, "1.688477"},
+    {0x1.b04p0, chars_format::general, 8, "1.6884766"},
+    {0x1.b04p0, chars_format::general, 9, "1.68847656"},
+    {0x1.b04p0, chars_format::general, 10, "1.688476562"}, // round to even
+    {0x1.b04p0, chars_format::general, 11, "1.6884765625"}, // exact
+    {0x1.b04p0, chars_format::general, 12, "1.6884765625"}, // trim trailing zeros
+    {0x1.b04p0, chars_format::general, 13, "1.6884765625"},
+
+    // Here, the scientific exponent X is -5.
+    // Therefore, scientific notation is always chosen with precision P - 1.
+    {0x1.8p-15, chars_format::general, -2, "4.57764e-05"},
+    {0x1.8p-15, chars_format::general, -1, "4.57764e-05"},
+    {0x1.8p-15, chars_format::general, 0, "5e-05"},
+    {0x1.8p-15, chars_format::general, 1, "5e-05"}, // scientific notation trims decimal point
+    {0x1.8p-15, chars_format::general, 2, "4.6e-05"},
+    {0x1.8p-15, chars_format::general, 3, "4.58e-05"},
+    {0x1.8p-15, chars_format::general, 4, "4.578e-05"},
+    {0x1.8p-15, chars_format::general, 5, "4.5776e-05"},
+    {0x1.8p-15, chars_format::general, 6, "4.57764e-05"},
+    {0x1.8p-15, chars_format::general, 7, "4.577637e-05"},
+    {0x1.8p-15, chars_format::general, 8, "4.5776367e-05"},
+    {0x1.8p-15, chars_format::general, 9, "4.57763672e-05"},
+    {0x1.8p-15, chars_format::general, 10, "4.577636719e-05"},
+    {0x1.8p-15, chars_format::general, 11, "4.5776367188e-05"}, // round to even
+    {0x1.8p-15, chars_format::general, 12, "4.57763671875e-05"}, // exact
+    {0x1.8p-15, chars_format::general, 13, "4.57763671875e-05"}, // trim trailing zeros
+    {0x1.8p-15, chars_format::general, 14, "4.57763671875e-05"},
+
+    // Trim trailing zeros.
+    {0x1.80015p0, chars_format::general, 1, "2"}, // fixed notation trims decimal point
+    {0x1.80015p0, chars_format::general, 2, "1.5"},
+    {0x1.80015p0, chars_format::general, 3, "1.5"}, // general trims trailing zeros
+    {0x1.80015p0, chars_format::general, 4, "1.5"},
+    {0x1.80015p0, chars_format::general, 5, "1.5"},
+    {0x1.80015p0, chars_format::general, 6, "1.50002"},
+    {0x1.80015p0, chars_format::general, 7, "1.50002"},
+    {0x1.80015p0, chars_format::general, 8, "1.50002"},
+    {0x1.80015p0, chars_format::general, 9, "1.50002003"},
+    {0x1.80015p0, chars_format::general, 10, "1.500020027"},
+    {0x1.80015p0, chars_format::general, 11, "1.5000200272"},
+    {0x1.80015p0, chars_format::general, 12, "1.50002002716"},
+    {0x1.80015p0, chars_format::general, 13, "1.500020027161"},
+    {0x1.80015p0, chars_format::general, 14, "1.5000200271606"},
+    {0x1.80015p0, chars_format::general, 15, "1.50002002716064"},
+    {0x1.80015p0, chars_format::general, 16, "1.500020027160645"},
+    {0x1.80015p0, chars_format::general, 17, "1.5000200271606445"},
+    {0x1.80015p0, chars_format::general, 18, "1.50002002716064453"},
+    {0x1.80015p0, chars_format::general, 19, "1.500020027160644531"},
+    {0x1.80015p0, chars_format::general, 20, "1.5000200271606445312"}, // round to even
+    {0x1.80015p0, chars_format::general, 21, "1.50002002716064453125"}, // exact
+
+    // Trim trailing zeros and decimal point.
+    {0x1.00015p0, chars_format::general, 1, "1"}, // fixed notation trims decimal point
+    {0x1.00015p0, chars_format::general, 2, "1"}, // general trims decimal point and trailing zeros
+    {0x1.00015p0, chars_format::general, 3, "1"},
+    {0x1.00015p0, chars_format::general, 4, "1"},
+    {0x1.00015p0, chars_format::general, 5, "1"},
+    {0x1.00015p0, chars_format::general, 6, "1.00002"},
+    {0x1.00015p0, chars_format::general, 7, "1.00002"},
+    {0x1.00015p0, chars_format::general, 8, "1.00002"},
+    {0x1.00015p0, chars_format::general, 9, "1.00002003"},
+    {0x1.00015p0, chars_format::general, 10, "1.000020027"},
+    {0x1.00015p0, chars_format::general, 11, "1.0000200272"},
+    {0x1.00015p0, chars_format::general, 12, "1.00002002716"},
+    {0x1.00015p0, chars_format::general, 13, "1.000020027161"},
+    {0x1.00015p0, chars_format::general, 14, "1.0000200271606"},
+    {0x1.00015p0, chars_format::general, 15, "1.00002002716064"},
+    {0x1.00015p0, chars_format::general, 16, "1.000020027160645"},
+    {0x1.00015p0, chars_format::general, 17, "1.0000200271606445"},
+    {0x1.00015p0, chars_format::general, 18, "1.00002002716064453"},
+    {0x1.00015p0, chars_format::general, 19, "1.000020027160644531"},
+    {0x1.00015p0, chars_format::general, 20, "1.0000200271606445312"}, // round to even
+    {0x1.00015p0, chars_format::general, 21, "1.00002002716064453125"}, // exact
+
+    // Trim trailing zeros, scientific notation.
+    {0x1.5cf751db94e6bp-20, chars_format::general, 1, "1e-06"}, // scientific notation trims decimal point
+    {0x1.5cf751db94e6bp-20, chars_format::general, 2, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 3, "1.3e-06"}, // general trims trailing zeros
+    {0x1.5cf751db94e6bp-20, chars_format::general, 4, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 5, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 6, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 7, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 8, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 9, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 10, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 11, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 12, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 13, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 14, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 15, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 16, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 17, "1.3e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 18, "1.30000000000000005e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 19, "1.300000000000000047e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 20, "1.3000000000000000471e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 21, "1.30000000000000004705e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 22, "1.300000000000000047052e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 23, "1.3000000000000000470517e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 24, "1.30000000000000004705166e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 25, "1.300000000000000047051664e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 26, "1.3000000000000000470516638e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 27, "1.30000000000000004705166378e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 28, "1.30000000000000004705166378e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 29, "1.3000000000000000470516637804e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 30, "1.30000000000000004705166378044e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 31, "1.30000000000000004705166378044e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 32, "1.3000000000000000470516637804397e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 33, "1.30000000000000004705166378043968e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 34, "1.300000000000000047051663780439679e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 35, "1.3000000000000000470516637804396787e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 36, "1.30000000000000004705166378043967867e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 37, "1.300000000000000047051663780439678675e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 38, "1.3000000000000000470516637804396786748e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 39, "1.30000000000000004705166378043967867484e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 40, "1.300000000000000047051663780439678674838e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 41, "1.3000000000000000470516637804396786748384e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 42, "1.30000000000000004705166378043967867483843e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 43, "1.300000000000000047051663780439678674838433e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 44, "1.3000000000000000470516637804396786748384329e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 45, "1.30000000000000004705166378043967867483843293e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 46, "1.300000000000000047051663780439678674838432926e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 47, "1.3000000000000000470516637804396786748384329258e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 48, "1.30000000000000004705166378043967867483843292575e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 49, "1.300000000000000047051663780439678674838432925753e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 50, "1.3000000000000000470516637804396786748384329257533e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 51, "1.3000000000000000470516637804396786748384329257533e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 52, "1.300000000000000047051663780439678674838432925753295e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 53, "1.3000000000000000470516637804396786748384329257532954e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 54, "1.30000000000000004705166378043967867483843292575329542e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 55, "1.300000000000000047051663780439678674838432925753295422e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 56, "1.3000000000000000470516637804396786748384329257532954216e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 57, "1.3000000000000000470516637804396786748384329257532954216e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 58, "1.3000000000000000470516637804396786748384329257532954216e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 59,
+        "1.3000000000000000470516637804396786748384329257532954216003e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 60,
+        "1.30000000000000004705166378043967867483843292575329542160034e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 61,
+        "1.300000000000000047051663780439678674838432925753295421600342e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 62,
+        "1.3000000000000000470516637804396786748384329257532954216003418e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 63,
+        "1.3000000000000000470516637804396786748384329257532954216003418e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 64,
+        "1.300000000000000047051663780439678674838432925753295421600341797e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 65,
+        "1.3000000000000000470516637804396786748384329257532954216003417969e-06"},
+    {0x1.5cf751db94e6bp-20, chars_format::general, 66,
+        "1.30000000000000004705166378043967867483843292575329542160034179688e-06"}, // round to even
+    {0x1.5cf751db94e6bp-20, chars_format::general, 67,
+        "1.300000000000000047051663780439678674838432925753295421600341796875e-06"}, // exact
+
+    // Trim trailing zeros and decimal point, scientific notation.
+    {0x1.92a737110e454p-19, chars_format::general, 1, "3e-06"}, // scientific notation trims decimal point
+    {0x1.92a737110e454p-19, chars_format::general, 2, "3e-06"}, // general trims decimal point and trailing zeros
+    {0x1.92a737110e454p-19, chars_format::general, 3, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 4, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 5, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 6, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 7, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 8, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 9, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 10, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 11, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 12, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 13, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 14, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 15, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 16, "3e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 17, "3.0000000000000001e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 18, "3.00000000000000008e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 19, "3.000000000000000076e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 20, "3.000000000000000076e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 21, "3.000000000000000076e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 22, "3.000000000000000076003e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 23, "3.0000000000000000760026e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 24, "3.00000000000000007600257e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 25, "3.000000000000000076002572e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 26, "3.0000000000000000760025723e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 27, "3.00000000000000007600257229e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 28, "3.000000000000000076002572291e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 29, "3.0000000000000000760025722912e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 30, "3.00000000000000007600257229123e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 31, "3.000000000000000076002572291234e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 32, "3.0000000000000000760025722912339e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 33, "3.00000000000000007600257229123386e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 34, "3.000000000000000076002572291233861e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 35, "3.0000000000000000760025722912338608e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 36, "3.00000000000000007600257229123386082e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 37, "3.000000000000000076002572291233860824e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 38, "3.0000000000000000760025722912338608239e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 39, "3.00000000000000007600257229123386082392e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 40, "3.000000000000000076002572291233860823922e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 41, "3.0000000000000000760025722912338608239224e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 42, "3.00000000000000007600257229123386082392244e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 43, "3.000000000000000076002572291233860823922441e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 44, "3.0000000000000000760025722912338608239224413e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 45, "3.00000000000000007600257229123386082392244134e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 46, "3.000000000000000076002572291233860823922441341e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 47, "3.000000000000000076002572291233860823922441341e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 48, "3.00000000000000007600257229123386082392244134098e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 49, "3.000000000000000076002572291233860823922441340983e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 50, "3.0000000000000000760025722912338608239224413409829e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 51, "3.00000000000000007600257229123386082392244134098291e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 52, "3.000000000000000076002572291233860823922441340982914e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 53, "3.000000000000000076002572291233860823922441340982914e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 54, "3.00000000000000007600257229123386082392244134098291397e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 55, "3.000000000000000076002572291233860823922441340982913971e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 56, "3.0000000000000000760025722912338608239224413409829139709e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 57,
+        "3.00000000000000007600257229123386082392244134098291397095e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 58,
+        "3.000000000000000076002572291233860823922441340982913970947e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 59,
+        "3.0000000000000000760025722912338608239224413409829139709473e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 60,
+        "3.00000000000000007600257229123386082392244134098291397094727e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 61,
+        "3.000000000000000076002572291233860823922441340982913970947266e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 62,
+        "3.0000000000000000760025722912338608239224413409829139709472656e-06"},
+    {0x1.92a737110e454p-19, chars_format::general, 63,
+        "3.00000000000000007600257229123386082392244134098291397094726562e-06"}, // round to even
+    {0x1.92a737110e454p-19, chars_format::general, 64,
+        "3.000000000000000076002572291233860823922441340982913970947265625e-06"}, // exact
+
+    // Test a large precision with fixed notation and scientific notation,
+    // verifying that we remain within the bounds of any lookup tables.
+    {0x1.ba9fbe76c8b44p+0, chars_format::general, 5000, "1.72900000000000009237055564881302416324615478515625"},
+    {0x1.d01ff9abb93d1p-20, chars_format::general, 5000,
+        "1.729000000000000090107283613749533657255597063340246677398681640625e-06"},
+
+    // Test the transitions between fixed notation and scientific notation.
+    {5555555.0, chars_format::general, 1, "6e+06"},
+    {555555.0, chars_format::general, 1, "6e+05"},
+    {55555.0, chars_format::general, 1, "6e+04"},
+    {5555.0, chars_format::general, 1, "6e+03"},
+    {555.0, chars_format::general, 1, "6e+02"},
+    {55.0, chars_format::general, 1, "6e+01"}, // round to even
+    {5.0, chars_format::general, 1, "5"},
+    {0x1p-3, chars_format::general, 1, "0.1"}, // 0.125
+    {0x1p-6, chars_format::general, 1, "0.02"}, // 0.015625
+    {0x1p-9, chars_format::general, 1, "0.002"}, // 0.001953125
+    {0x1p-13, chars_format::general, 1, "0.0001"}, // 0.0001220703125
+    {0x1p-16, chars_format::general, 1, "2e-05"}, // 1.52587890625e-05
+    {0x1p-19, chars_format::general, 1, "2e-06"}, // 1.9073486328125e-06
+
+    {5555555.0, chars_format::general, 2, "5.6e+06"},
+    {555555.0, chars_format::general, 2, "5.6e+05"},
+    {55555.0, chars_format::general, 2, "5.6e+04"},
+    {5555.0, chars_format::general, 2, "5.6e+03"},
+    {555.0, chars_format::general, 2, "5.6e+02"}, // round to even
+    {55.0, chars_format::general, 2, "55"},
+    {5.0, chars_format::general, 2, "5"},
+    {0x1p-3, chars_format::general, 2, "0.12"}, // round to even
+    {0x1p-6, chars_format::general, 2, "0.016"},
+    {0x1p-9, chars_format::general, 2, "0.002"},
+    {0x1p-13, chars_format::general, 2, "0.00012"},
+    {0x1p-16, chars_format::general, 2, "1.5e-05"},
+    {0x1p-19, chars_format::general, 2, "1.9e-06"},
+
+    {5555555.0, chars_format::general, 3, "5.56e+06"},
+    {555555.0, chars_format::general, 3, "5.56e+05"},
+    {55555.0, chars_format::general, 3, "5.56e+04"},
+    {5555.0, chars_format::general, 3, "5.56e+03"}, // round to even
+    {555.0, chars_format::general, 3, "555"},
+    {55.0, chars_format::general, 3, "55"},
+    {5.0, chars_format::general, 3, "5"},
+    {0x1p-3, chars_format::general, 3, "0.125"},
+    {0x1p-6, chars_format::general, 3, "0.0156"},
+    {0x1p-9, chars_format::general, 3, "0.00195"},
+    {0x1p-13, chars_format::general, 3, "0.000122"},
+    {0x1p-16, chars_format::general, 3, "1.53e-05"},
+    {0x1p-19, chars_format::general, 3, "1.91e-06"},
+
+    {5555555.0, chars_format::general, 4, "5.556e+06"},
+    {555555.0, chars_format::general, 4, "5.556e+05"},
+    {55555.0, chars_format::general, 4, "5.556e+04"}, // round to even
+    {5555.0, chars_format::general, 4, "5555"},
+    {555.0, chars_format::general, 4, "555"},
+    {55.0, chars_format::general, 4, "55"},
+    {5.0, chars_format::general, 4, "5"},
+    {0x1p-3, chars_format::general, 4, "0.125"},
+    {0x1p-6, chars_format::general, 4, "0.01562"}, // round to even
+    {0x1p-9, chars_format::general, 4, "0.001953"},
+    {0x1p-13, chars_format::general, 4, "0.0001221"},
+    {0x1p-16, chars_format::general, 4, "1.526e-05"},
+    {0x1p-19, chars_format::general, 4, "1.907e-06"},
+
+    {5555555.0, chars_format::general, 5, "5.5556e+06"},
+    {555555.0, chars_format::general, 5, "5.5556e+05"}, // round to even
+    {55555.0, chars_format::general, 5, "55555"},
+    {5555.0, chars_format::general, 5, "5555"},
+    {555.0, chars_format::general, 5, "555"},
+    {55.0, chars_format::general, 5, "55"},
+    {5.0, chars_format::general, 5, "5"},
+    {0x1p-3, chars_format::general, 5, "0.125"},
+    {0x1p-6, chars_format::general, 5, "0.015625"},
+    {0x1p-9, chars_format::general, 5, "0.0019531"},
+    {0x1p-13, chars_format::general, 5, "0.00012207"},
+    {0x1p-16, chars_format::general, 5, "1.5259e-05"},
+    {0x1p-19, chars_format::general, 5, "1.9073e-06"},
+
+    // Tricky corner cases.
+    // In these scenarios, rounding can adjust the scientific exponent X,
+    // which affects the transition between fixed notation and scientific notation.
+    {999.999, chars_format::general, 1, "1e+03"}, // "%.0e" is "1e+03"; X == 3
+    {999.999, chars_format::general, 2, "1e+03"}, // "%.1e" is "1.0e+03"; X == 3
+    {999.999, chars_format::general, 3, "1e+03"}, // "%.2e" is "1.00e+03"; X == 3
+    {999.999, chars_format::general, 4, "1000"}, // "%.3e" is "1.000e+03"; X == 3
+    {999.999, chars_format::general, 5, "1000"}, // "%.4e" is "1.0000e+03"; X == 3
+    {999.999, chars_format::general, 6, "999.999"}, // "%.5e" is "9.99999e+02"; X == 2
+
+    {999.99, chars_format::general, 1, "1e+03"},
+    {999.99, chars_format::general, 2, "1e+03"},
+    {999.99, chars_format::general, 3, "1e+03"},
+    {999.99, chars_format::general, 4, "1000"},
+    {999.99, chars_format::general, 5, "999.99"},
+    {999.99, chars_format::general, 6, "999.99"},
+
+    // C11's Standardese is slightly vague about how to perform the trial formatting in scientific notation,
+    // but the intention is to use precision P - 1, which is what's used when scientific notation is actually chosen.
+    // This example verifies this behavior. Here, P == 3 performs trial formatting with "%.2e", triggering rounding.
+    // That increases X to 3, forcing scientific notation to be chosen.
+    // If P == 3 performed trial formatting with "%.3e", rounding wouldn't happen,
+    // X would be 2, and fixed notation would be chosen.
+    {999.9, chars_format::general, 1, "1e+03"}, // "%.0e" is "1e+03"; X == 3
+    {999.9, chars_format::general, 2, "1e+03"}, // "%.1e" is "1.0e+03"; X == 3
+    {999.9, chars_format::general, 3, "1e+03"}, // "%.2e" is "1.00e+03"; X == 3; SPECIAL CORNER CASE
+    {999.9, chars_format::general, 4, "999.9"}, // "%.3e" is "9.999e+02"; X == 2
+    {999.9, chars_format::general, 5, "999.9"}, // "%.4e" is "9.9990e+02"; X == 2
+    {999.9, chars_format::general, 6, "999.9"}, // "%.5e" is "9.99900e+02"; X == 2
+
+    {999.0, chars_format::general, 1, "1e+03"},
+    {999.0, chars_format::general, 2, "1e+03"},
+    {999.0, chars_format::general, 3, "999"},
+    {999.0, chars_format::general, 4, "999"},
+    {999.0, chars_format::general, 5, "999"},
+    {999.0, chars_format::general, 6, "999"},
+
+    {99.9999, chars_format::general, 1, "1e+02"},
+    {99.9999, chars_format::general, 2, "1e+02"},
+    {99.9999, chars_format::general, 3, "100"},
+    {99.9999, chars_format::general, 4, "100"},
+    {99.9999, chars_format::general, 5, "100"},
+    {99.9999, chars_format::general, 6, "99.9999"},
+
+    {99.999, chars_format::general, 1, "1e+02"},
+    {99.999, chars_format::general, 2, "1e+02"},
+    {99.999, chars_format::general, 3, "100"},
+    {99.999, chars_format::general, 4, "100"},
+    {99.999, chars_format::general, 5, "99.999"},
+    {99.999, chars_format::general, 6, "99.999"},
+
+    {99.99, chars_format::general, 1, "1e+02"},
+    {99.99, chars_format::general, 2, "1e+02"},
+    {99.99, chars_format::general, 3, "100"},
+    {99.99, chars_format::general, 4, "99.99"},
+    {99.99, chars_format::general, 5, "99.99"},
+    {99.99, chars_format::general, 6, "99.99"},
+
+    {99.9, chars_format::general, 1, "1e+02"},
+    {99.9, chars_format::general, 2, "1e+02"},
+    {99.9, chars_format::general, 3, "99.9"},
+    {99.9, chars_format::general, 4, "99.9"},
+    {99.9, chars_format::general, 5, "99.9"},
+    {99.9, chars_format::general, 6, "99.9"},
+
+    {99.0, chars_format::general, 1, "1e+02"},
+    {99.0, chars_format::general, 2, "99"},
+    {99.0, chars_format::general, 3, "99"},
+    {99.0, chars_format::general, 4, "99"},
+    {99.0, chars_format::general, 5, "99"},
+    {99.0, chars_format::general, 6, "99"},
+
+    {9.99999, chars_format::general, 1, "1e+01"},
+    {9.99999, chars_format::general, 2, "10"},
+    {9.99999, chars_format::general, 3, "10"},
+    {9.99999, chars_format::general, 4, "10"},
+    {9.99999, chars_format::general, 5, "10"},
+    {9.99999, chars_format::general, 6, "9.99999"},
+
+    {9.9999, chars_format::general, 1, "1e+01"},
+    {9.9999, chars_format::general, 2, "10"},
+    {9.9999, chars_format::general, 3, "10"},
+    {9.9999, chars_format::general, 4, "10"},
+    {9.9999, chars_format::general, 5, "9.9999"},
+    {9.9999, chars_format::general, 6, "9.9999"},
+
+    {9.999, chars_format::general, 1, "1e+01"},
+    {9.999, chars_format::general, 2, "10"},
+    {9.999, chars_format::general, 3, "10"},
+    {9.999, chars_format::general, 4, "9.999"},
+    {9.999, chars_format::general, 5, "9.999"},
+    {9.999, chars_format::general, 6, "9.999"},
+
+    {9.99, chars_format::general, 1, "1e+01"},
+    {9.99, chars_format::general, 2, "10"},
+    {9.99, chars_format::general, 3, "9.99"},
+    {9.99, chars_format::general, 4, "9.99"},
+    {9.99, chars_format::general, 5, "9.99"},
+    {9.99, chars_format::general, 6, "9.99"},
+
+    {9.9, chars_format::general, 1, "1e+01"},
+    {9.9, chars_format::general, 2, "9.9"},
+    {9.9, chars_format::general, 3, "9.9"},
+    {9.9, chars_format::general, 4, "9.9"},
+    {9.9, chars_format::general, 5, "9.9"},
+    {9.9, chars_format::general, 6, "9.9"},
+
+    {9.0, chars_format::general, 1, "9"},
+    {9.0, chars_format::general, 2, "9"},
+    {9.0, chars_format::general, 3, "9"},
+    {9.0, chars_format::general, 4, "9"},
+    {9.0, chars_format::general, 5, "9"},
+    {9.0, chars_format::general, 6, "9"},
+
+    {0.999999, chars_format::general, 1, "1"},
+    {0.999999, chars_format::general, 2, "1"},
+    {0.999999, chars_format::general, 3, "1"},
+    {0.999999, chars_format::general, 4, "1"},
+    {0.999999, chars_format::general, 5, "1"},
+    {0.999999, chars_format::general, 6, "0.999999"},
+
+    {0.99999, chars_format::general, 1, "1"},
+    {0.99999, chars_format::general, 2, "1"},
+    {0.99999, chars_format::general, 3, "1"},
+    {0.99999, chars_format::general, 4, "1"},
+    {0.99999, chars_format::general, 5, "0.99999"},
+    {0.99999, chars_format::general, 6, "0.99999"},
+
+    {0.9999, chars_format::general, 1, "1"},
+    {0.9999, chars_format::general, 2, "1"},
+    {0.9999, chars_format::general, 3, "1"},
+    {0.9999, chars_format::general, 4, "0.9999"},
+    {0.9999, chars_format::general, 5, "0.9999"},
+    {0.9999, chars_format::general, 6, "0.9999"},
+
+    {0.999, chars_format::general, 1, "1"},
+    {0.999, chars_format::general, 2, "1"},
+    {0.999, chars_format::general, 3, "0.999"},
+    {0.999, chars_format::general, 4, "0.999"},
+    {0.999, chars_format::general, 5, "0.999"},
+    {0.999, chars_format::general, 6, "0.999"},
+
+    {0.99, chars_format::general, 1, "1"},
+    {0.99, chars_format::general, 2, "0.99"},
+    {0.99, chars_format::general, 3, "0.99"},
+    {0.99, chars_format::general, 4, "0.99"},
+    {0.99, chars_format::general, 5, "0.99"},
+    {0.99, chars_format::general, 6, "0.99"},
+
+    {0.9, chars_format::general, 1, "0.9"},
+    {0.9, chars_format::general, 2, "0.9"},
+    {0.9, chars_format::general, 3, "0.9"},
+    {0.9, chars_format::general, 4, "0.9"},
+    {0.9, chars_format::general, 5, "0.9"},
+    {0.9, chars_format::general, 6, "0.9"},
+
+    {0.0999999, chars_format::general, 1, "0.1"},
+    {0.0999999, chars_format::general, 2, "0.1"},
+    {0.0999999, chars_format::general, 3, "0.1"},
+    {0.0999999, chars_format::general, 4, "0.1"},
+    {0.0999999, chars_format::general, 5, "0.1"},
+    {0.0999999, chars_format::general, 6, "0.0999999"},
+
+    {0.099999, chars_format::general, 1, "0.1"},
+    {0.099999, chars_format::general, 2, "0.1"},
+    {0.099999, chars_format::general, 3, "0.1"},
+    {0.099999, chars_format::general, 4, "0.1"},
+    {0.099999, chars_format::general, 5, "0.099999"},
+    {0.099999, chars_format::general, 6, "0.099999"},
+
+    {0.09999, chars_format::general, 1, "0.1"},
+    {0.09999, chars_format::general, 2, "0.1"},
+    {0.09999, chars_format::general, 3, "0.1"},
+    {0.09999, chars_format::general, 4, "0.09999"},
+    {0.09999, chars_format::general, 5, "0.09999"},
+    {0.09999, chars_format::general, 6, "0.09999"},
+
+    {0.0999, chars_format::general, 1, "0.1"},
+    {0.0999, chars_format::general, 2, "0.1"},
+    {0.0999, chars_format::general, 3, "0.0999"},
+    {0.0999, chars_format::general, 4, "0.0999"},
+    {0.0999, chars_format::general, 5, "0.0999"},
+    {0.0999, chars_format::general, 6, "0.0999"},
+
+    {0.099, chars_format::general, 1, "0.1"},
+    {0.099, chars_format::general, 2, "0.099"},
+    {0.099, chars_format::general, 3, "0.099"},
+    {0.099, chars_format::general, 4, "0.099"},
+    {0.099, chars_format::general, 5, "0.099"},
+    {0.099, chars_format::general, 6, "0.099"},
+
+    {0.09, chars_format::general, 1, "0.09"},
+    {0.09, chars_format::general, 2, "0.09"},
+    {0.09, chars_format::general, 3, "0.09"},
+    {0.09, chars_format::general, 4, "0.09"},
+    {0.09, chars_format::general, 5, "0.09"},
+    {0.09, chars_format::general, 6, "0.09"},
+
+    {0.00999999, chars_format::general, 1, "0.01"},
+    {0.00999999, chars_format::general, 2, "0.01"},
+    {0.00999999, chars_format::general, 3, "0.01"},
+    {0.00999999, chars_format::general, 4, "0.01"},
+    {0.00999999, chars_format::general, 5, "0.01"},
+    {0.00999999, chars_format::general, 6, "0.00999999"},
+
+    {0.0099999, chars_format::general, 1, "0.01"},
+    {0.0099999, chars_format::general, 2, "0.01"},
+    {0.0099999, chars_format::general, 3, "0.01"},
+    {0.0099999, chars_format::general, 4, "0.01"},
+    {0.0099999, chars_format::general, 5, "0.0099999"},
+    {0.0099999, chars_format::general, 6, "0.0099999"},
+
+    {0.009999, chars_format::general, 1, "0.01"},
+    {0.009999, chars_format::general, 2, "0.01"},
+    {0.009999, chars_format::general, 3, "0.01"},
+    {0.009999, chars_format::general, 4, "0.009999"},
+    {0.009999, chars_format::general, 5, "0.009999"},
+    {0.009999, chars_format::general, 6, "0.009999"},
+
+    {0.00999, chars_format::general, 1, "0.01"},
+    {0.00999, chars_format::general, 2, "0.01"},
+    {0.00999, chars_format::general, 3, "0.00999"},
+    {0.00999, chars_format::general, 4, "0.00999"},
+    {0.00999, chars_format::general, 5, "0.00999"},
+    {0.00999, chars_format::general, 6, "0.00999"},
+
+    {0.0099, chars_format::general, 1, "0.01"},
+    {0.0099, chars_format::general, 2, "0.0099"},
+    {0.0099, chars_format::general, 3, "0.0099"},
+    {0.0099, chars_format::general, 4, "0.0099"},
+    {0.0099, chars_format::general, 5, "0.0099"},
+    {0.0099, chars_format::general, 6, "0.0099"},
+
+    {0.009, chars_format::general, 1, "0.009"},
+    {0.009, chars_format::general, 2, "0.009"},
+    {0.009, chars_format::general, 3, "0.009"},
+    {0.009, chars_format::general, 4, "0.009"},
+    {0.009, chars_format::general, 5, "0.009"},
+    {0.009, chars_format::general, 6, "0.009"},
+
+    {0.000999999, chars_format::general, 1, "0.001"},
+    {0.000999999, chars_format::general, 2, "0.001"},
+    {0.000999999, chars_format::general, 3, "0.001"},
+    {0.000999999, chars_format::general, 4, "0.001"},
+    {0.000999999, chars_format::general, 5, "0.001"},
+    {0.000999999, chars_format::general, 6, "0.000999999"},
+
+    {0.00099999, chars_format::general, 1, "0.001"},
+    {0.00099999, chars_format::general, 2, "0.001"},
+    {0.00099999, chars_format::general, 3, "0.001"},
+    {0.00099999, chars_format::general, 4, "0.001"},
+    {0.00099999, chars_format::general, 5, "0.00099999"},
+    {0.00099999, chars_format::general, 6, "0.00099999"},
+
+    {0.0009999, chars_format::general, 1, "0.001"},
+    {0.0009999, chars_format::general, 2, "0.001"},
+    {0.0009999, chars_format::general, 3, "0.001"},
+    {0.0009999, chars_format::general, 4, "0.0009999"},
+    {0.0009999, chars_format::general, 5, "0.0009999"},
+    {0.0009999, chars_format::general, 6, "0.0009999"},
+
+    {0.000999, chars_format::general, 1, "0.001"},
+    {0.000999, chars_format::general, 2, "0.001"},
+    {0.000999, chars_format::general, 3, "0.000999"},
+    {0.000999, chars_format::general, 4, "0.000999"},
+    {0.000999, chars_format::general, 5, "0.000999"},
+    {0.000999, chars_format::general, 6, "0.000999"},
+
+    {0.00099, chars_format::general, 1, "0.001"},
+    {0.00099, chars_format::general, 2, "0.00099"},
+    {0.00099, chars_format::general, 3, "0.00099"},
+    {0.00099, chars_format::general, 4, "0.00099"},
+    {0.00099, chars_format::general, 5, "0.00099"},
+    {0.00099, chars_format::general, 6, "0.00099"},
+
+    {0.0009, chars_format::general, 1, "0.0009"},
+    {0.0009, chars_format::general, 2, "0.0009"},
+    {0.0009, chars_format::general, 3, "0.0009"},
+    {0.0009, chars_format::general, 4, "0.0009"},
+    {0.0009, chars_format::general, 5, "0.0009"},
+    {0.0009, chars_format::general, 6, "0.0009"},
+
+    // Having a scientific exponent X == -5 triggers scientific notation.
+    // If rounding adjusts this to X == -4, then fixed notation will be selected.
+    {0.0000999999, chars_format::general, 1, "0.0001"},
+    {0.0000999999, chars_format::general, 2, "0.0001"},
+    {0.0000999999, chars_format::general, 3, "0.0001"},
+    {0.0000999999, chars_format::general, 4, "0.0001"},
+    {0.0000999999, chars_format::general, 5, "0.0001"},
+    {0.0000999999, chars_format::general, 6, "9.99999e-05"},
+
+    {0.000099999, chars_format::general, 1, "0.0001"},
+    {0.000099999, chars_format::general, 2, "0.0001"},
+    {0.000099999, chars_format::general, 3, "0.0001"},
+    {0.000099999, chars_format::general, 4, "0.0001"},
+    {0.000099999, chars_format::general, 5, "9.9999e-05"},
+    {0.000099999, chars_format::general, 6, "9.9999e-05"},
+
+    {0.00009999, chars_format::general, 1, "0.0001"},
+    {0.00009999, chars_format::general, 2, "0.0001"},
+    {0.00009999, chars_format::general, 3, "0.0001"},
+    {0.00009999, chars_format::general, 4, "9.999e-05"},
+    {0.00009999, chars_format::general, 5, "9.999e-05"},
+    {0.00009999, chars_format::general, 6, "9.999e-05"},
+
+    {0.0000999, chars_format::general, 1, "0.0001"},
+    {0.0000999, chars_format::general, 2, "0.0001"},
+    {0.0000999, chars_format::general, 3, "9.99e-05"},
+    {0.0000999, chars_format::general, 4, "9.99e-05"},
+    {0.0000999, chars_format::general, 5, "9.99e-05"},
+    {0.0000999, chars_format::general, 6, "9.99e-05"},
+
+    {0.000099, chars_format::general, 1, "0.0001"},
+    {0.000099, chars_format::general, 2, "9.9e-05"},
+    {0.000099, chars_format::general, 3, "9.9e-05"},
+    {0.000099, chars_format::general, 4, "9.9e-05"},
+    {0.000099, chars_format::general, 5, "9.9e-05"},
+    {0.000099, chars_format::general, 6, "9.9e-05"},
+
+    {0.00009, chars_format::general, 1, "9e-05"},
+    {0.00009, chars_format::general, 2, "9e-05"},
+    {0.00009, chars_format::general, 3, "9e-05"},
+    {0.00009, chars_format::general, 4, "9e-05"},
+    {0.00009, chars_format::general, 5, "9e-05"},
+    {0.00009, chars_format::general, 6, "9e-05"},
+
+    // Rounding test cases without exponent-adjusting behavior.
+    {2999.999, chars_format::general, 1, "3e+03"},
+    {2999.999, chars_format::general, 2, "3e+03"},
+    {2999.999, chars_format::general, 3, "3e+03"},
+    {2999.999, chars_format::general, 4, "3000"},
+    {2999.999, chars_format::general, 5, "3000"},
+    {2999.999, chars_format::general, 6, "3000"},
+
+    {2999.99, chars_format::general, 1, "3e+03"},
+    {2999.99, chars_format::general, 2, "3e+03"},
+    {2999.99, chars_format::general, 3, "3e+03"},
+    {2999.99, chars_format::general, 4, "3000"},
+    {2999.99, chars_format::general, 5, "3000"},
+    {2999.99, chars_format::general, 6, "2999.99"},
+
+    {2999.9, chars_format::general, 1, "3e+03"},
+    {2999.9, chars_format::general, 2, "3e+03"},
+    {2999.9, chars_format::general, 3, "3e+03"},
+    {2999.9, chars_format::general, 4, "3000"},
+    {2999.9, chars_format::general, 5, "2999.9"},
+    {2999.9, chars_format::general, 6, "2999.9"},
+
+    {2999.0, chars_format::general, 1, "3e+03"},
+    {2999.0, chars_format::general, 2, "3e+03"},
+    {2999.0, chars_format::general, 3, "3e+03"},
+    {2999.0, chars_format::general, 4, "2999"},
+    {2999.0, chars_format::general, 5, "2999"},
+    {2999.0, chars_format::general, 6, "2999"},
+
+    {299.999, chars_format::general, 1, "3e+02"},
+    {299.999, chars_format::general, 2, "3e+02"},
+    {299.999, chars_format::general, 3, "300"},
+    {299.999, chars_format::general, 4, "300"},
+    {299.999, chars_format::general, 5, "300"},
+    {299.999, chars_format::general, 6, "299.999"},
+
+    {299.99, chars_format::general, 1, "3e+02"},
+    {299.99, chars_format::general, 2, "3e+02"},
+    {299.99, chars_format::general, 3, "300"},
+    {299.99, chars_format::general, 4, "300"},
+    {299.99, chars_format::general, 5, "299.99"},
+    {299.99, chars_format::general, 6, "299.99"},
+
+    {299.9, chars_format::general, 1, "3e+02"},
+    {299.9, chars_format::general, 2, "3e+02"},
+    {299.9, chars_format::general, 3, "300"},
+    {299.9, chars_format::general, 4, "299.9"},
+    {299.9, chars_format::general, 5, "299.9"},
+    {299.9, chars_format::general, 6, "299.9"},
+
+    {299.0, chars_format::general, 1, "3e+02"},
+    {299.0, chars_format::general, 2, "3e+02"},
+    {299.0, chars_format::general, 3, "299"},
+    {299.0, chars_format::general, 4, "299"},
+    {299.0, chars_format::general, 5, "299"},
+    {299.0, chars_format::general, 6, "299"},
+
+    {29.999, chars_format::general, 1, "3e+01"},
+    {29.999, chars_format::general, 2, "30"},
+    {29.999, chars_format::general, 3, "30"},
+    {29.999, chars_format::general, 4, "30"},
+    {29.999, chars_format::general, 5, "29.999"},
+    {29.999, chars_format::general, 6, "29.999"},
+
+    {29.99, chars_format::general, 1, "3e+01"},
+    {29.99, chars_format::general, 2, "30"},
+    {29.99, chars_format::general, 3, "30"},
+    {29.99, chars_format::general, 4, "29.99"},
+    {29.99, chars_format::general, 5, "29.99"},
+    {29.99, chars_format::general, 6, "29.99"},
+
+    {29.9, chars_format::general, 1, "3e+01"},
+    {29.9, chars_format::general, 2, "30"},
+    {29.9, chars_format::general, 3, "29.9"},
+    {29.9, chars_format::general, 4, "29.9"},
+    {29.9, chars_format::general, 5, "29.9"},
+    {29.9, chars_format::general, 6, "29.9"},
+
+    {29.0, chars_format::general, 1, "3e+01"},
+    {29.0, chars_format::general, 2, "29"},
+    {29.0, chars_format::general, 3, "29"},
+    {29.0, chars_format::general, 4, "29"},
+    {29.0, chars_format::general, 5, "29"},
+    {29.0, chars_format::general, 6, "29"},
+
+    {2.999, chars_format::general, 1, "3"},
+    {2.999, chars_format::general, 2, "3"},
+    {2.999, chars_format::general, 3, "3"},
+    {2.999, chars_format::general, 4, "2.999"},
+    {2.999, chars_format::general, 5, "2.999"},
+    {2.999, chars_format::general, 6, "2.999"},
+
+    {2.99, chars_format::general, 1, "3"},
+    {2.99, chars_format::general, 2, "3"},
+    {2.99, chars_format::general, 3, "2.99"},
+    {2.99, chars_format::general, 4, "2.99"},
+    {2.99, chars_format::general, 5, "2.99"},
+    {2.99, chars_format::general, 6, "2.99"},
+
+    {2.9, chars_format::general, 1, "3"},
+    {2.9, chars_format::general, 2, "2.9"},
+    {2.9, chars_format::general, 3, "2.9"},
+    {2.9, chars_format::general, 4, "2.9"},
+    {2.9, chars_format::general, 5, "2.9"},
+    {2.9, chars_format::general, 6, "2.9"},
+
+    {2.0, chars_format::general, 1, "2"},
+    {2.0, chars_format::general, 2, "2"},
+    {2.0, chars_format::general, 3, "2"},
+    {2.0, chars_format::general, 4, "2"},
+    {2.0, chars_format::general, 5, "2"},
+    {2.0, chars_format::general, 6, "2"},
+
+    {0.2999, chars_format::general, 1, "0.3"},
+    {0.2999, chars_format::general, 2, "0.3"},
+    {0.2999, chars_format::general, 3, "0.3"},
+    {0.2999, chars_format::general, 4, "0.2999"},
+    {0.2999, chars_format::general, 5, "0.2999"},
+    {0.2999, chars_format::general, 6, "0.2999"},
+
+    {0.299, chars_format::general, 1, "0.3"},
+    {0.299, chars_format::general, 2, "0.3"},
+    {0.299, chars_format::general, 3, "0.299"},
+    {0.299, chars_format::general, 4, "0.299"},
+    {0.299, chars_format::general, 5, "0.299"},
+    {0.299, chars_format::general, 6, "0.299"},
+
+    {0.29, chars_format::general, 1, "0.3"},
+    {0.29, chars_format::general, 2, "0.29"},
+    {0.29, chars_format::general, 3, "0.29"},
+    {0.29, chars_format::general, 4, "0.29"},
+    {0.29, chars_format::general, 5, "0.29"},
+    {0.29, chars_format::general, 6, "0.29"},
+
+    {0.2, chars_format::general, 1, "0.2"},
+    {0.2, chars_format::general, 2, "0.2"},
+    {0.2, chars_format::general, 3, "0.2"},
+    {0.2, chars_format::general, 4, "0.2"},
+    {0.2, chars_format::general, 5, "0.2"},
+    {0.2, chars_format::general, 6, "0.2"},
+
+    {0.02999, chars_format::general, 1, "0.03"},
+    {0.02999, chars_format::general, 2, "0.03"},
+    {0.02999, chars_format::general, 3, "0.03"},
+    {0.02999, chars_format::general, 4, "0.02999"},
+    {0.02999, chars_format::general, 5, "0.02999"},
+    {0.02999, chars_format::general, 6, "0.02999"},
+
+    {0.0299, chars_format::general, 1, "0.03"},
+    {0.0299, chars_format::general, 2, "0.03"},
+    {0.0299, chars_format::general, 3, "0.0299"},
+    {0.0299, chars_format::general, 4, "0.0299"},
+    {0.0299, chars_format::general, 5, "0.0299"},
+    {0.0299, chars_format::general, 6, "0.0299"},
+
+    {0.029, chars_format::general, 1, "0.03"},
+    {0.029, chars_format::general, 2, "0.029"},
+    {0.029, chars_format::general, 3, "0.029"},
+    {0.029, chars_format::general, 4, "0.029"},
+    {0.029, chars_format::general, 5, "0.029"},
+    {0.029, chars_format::general, 6, "0.029"},
+
+    {0.02, chars_format::general, 1, "0.02"},
+    {0.02, chars_format::general, 2, "0.02"},
+    {0.02, chars_format::general, 3, "0.02"},
+    {0.02, chars_format::general, 4, "0.02"},
+    {0.02, chars_format::general, 5, "0.02"},
+    {0.02, chars_format::general, 6, "0.02"},
+
+    {0.002999, chars_format::general, 1, "0.003"},
+    {0.002999, chars_format::general, 2, "0.003"},
+    {0.002999, chars_format::general, 3, "0.003"},
+    {0.002999, chars_format::general, 4, "0.002999"},
+    {0.002999, chars_format::general, 5, "0.002999"},
+    {0.002999, chars_format::general, 6, "0.002999"},
+
+    {0.00299, chars_format::general, 1, "0.003"},
+    {0.00299, chars_format::general, 2, "0.003"},
+    {0.00299, chars_format::general, 3, "0.00299"},
+    {0.00299, chars_format::general, 4, "0.00299"},
+    {0.00299, chars_format::general, 5, "0.00299"},
+    {0.00299, chars_format::general, 6, "0.00299"},
+
+    {0.0029, chars_format::general, 1, "0.003"},
+    {0.0029, chars_format::general, 2, "0.0029"},
+    {0.0029, chars_format::general, 3, "0.0029"},
+    {0.0029, chars_format::general, 4, "0.0029"},
+    {0.0029, chars_format::general, 5, "0.0029"},
+    {0.0029, chars_format::general, 6, "0.0029"},
+
+    {0.002, chars_format::general, 1, "0.002"},
+    {0.002, chars_format::general, 2, "0.002"},
+    {0.002, chars_format::general, 3, "0.002"},
+    {0.002, chars_format::general, 4, "0.002"},
+    {0.002, chars_format::general, 5, "0.002"},
+    {0.002, chars_format::general, 6, "0.002"},
+
+    {0.0002999, chars_format::general, 1, "0.0003"},
+    {0.0002999, chars_format::general, 2, "0.0003"},
+    {0.0002999, chars_format::general, 3, "0.0003"},
+    {0.0002999, chars_format::general, 4, "0.0002999"},
+    {0.0002999, chars_format::general, 5, "0.0002999"},
+    {0.0002999, chars_format::general, 6, "0.0002999"},
+
+    {0.000299, chars_format::general, 1, "0.0003"},
+    {0.000299, chars_format::general, 2, "0.0003"},
+    {0.000299, chars_format::general, 3, "0.000299"},
+    {0.000299, chars_format::general, 4, "0.000299"},
+    {0.000299, chars_format::general, 5, "0.000299"},
+    {0.000299, chars_format::general, 6, "0.000299"},
+
+    {0.00029, chars_format::general, 1, "0.0003"},
+    {0.00029, chars_format::general, 2, "0.00029"},
+    {0.00029, chars_format::general, 3, "0.00029"},
+    {0.00029, chars_format::general, 4, "0.00029"},
+    {0.00029, chars_format::general, 5, "0.00029"},
+    {0.00029, chars_format::general, 6, "0.00029"},
+
+    {0.0002, chars_format::general, 1, "0.0002"},
+    {0.0002, chars_format::general, 2, "0.0002"},
+    {0.0002, chars_format::general, 3, "0.0002"},
+    {0.0002, chars_format::general, 4, "0.0002"},
+    {0.0002, chars_format::general, 5, "0.0002"},
+    {0.0002, chars_format::general, 6, "0.0002"},
+
+    {0.00002999, chars_format::general, 1, "3e-05"},
+    {0.00002999, chars_format::general, 2, "3e-05"},
+    {0.00002999, chars_format::general, 3, "3e-05"},
+    {0.00002999, chars_format::general, 4, "2.999e-05"},
+    {0.00002999, chars_format::general, 5, "2.999e-05"},
+    {0.00002999, chars_format::general, 6, "2.999e-05"},
+
+    {0.0000299, chars_format::general, 1, "3e-05"},
+    {0.0000299, chars_format::general, 2, "3e-05"},
+    {0.0000299, chars_format::general, 3, "2.99e-05"},
+    {0.0000299, chars_format::general, 4, "2.99e-05"},
+    {0.0000299, chars_format::general, 5, "2.99e-05"},
+    {0.0000299, chars_format::general, 6, "2.99e-05"},
+
+    {0.000029, chars_format::general, 1, "3e-05"},
+    {0.000029, chars_format::general, 2, "2.9e-05"},
+    {0.000029, chars_format::general, 3, "2.9e-05"},
+    {0.000029, chars_format::general, 4, "2.9e-05"},
+    {0.000029, chars_format::general, 5, "2.9e-05"},
+    {0.000029, chars_format::general, 6, "2.9e-05"},
+
+    {0.00002, chars_format::general, 1, "2e-05"},
+    {0.00002, chars_format::general, 2, "2e-05"},
+    {0.00002, chars_format::general, 3, "2e-05"},
+    {0.00002, chars_format::general, 4, "2e-05"},
+    {0.00002, chars_format::general, 5, "2e-05"},
+    {0.00002, chars_format::general, 6, "2e-05"},
+
+    // Test the transitions between values of the scientific exponent X.
+    // For brevity, we avoid testing all possible combinations of P and X. Instead, we test:
+    // * All values of P where some X can be affected by rounding. (For double, this is [1, 15].)
+    // * P == 25, which is arbitrary.
+    // * P == numeric_limits::max_exponent10 + 1. This selects fixed notation for numeric_limits::max(),
+    //   so it's the largest interesting value of P.
+    // * Finally, we test the transitions around X == P - 1, ensuring that we can recognize every value of X.
+    {0x1.8e757928e0c9dp-14, chars_format::general, 1, "9e-05"},
+    {0x1.8e757928e0c9ep-14, chars_format::general, 1, "0.0001"},
+    {0x1.f212d77318fc5p-11, chars_format::general, 1, "0.0009"},
+    {0x1.f212d77318fc6p-11, chars_format::general, 1, "0.001"},
+    {0x1.374bc6a7ef9dbp-7, chars_format::general, 1, "0.009"},
+    {0x1.374bc6a7ef9dcp-7, chars_format::general, 1, "0.01"},
+    {0x1.851eb851eb851p-4, chars_format::general, 1, "0.09"},
+    {0x1.851eb851eb852p-4, chars_format::general, 1, "0.1"},
+    {0x1.e666666666666p-1, chars_format::general, 1, "0.9"},
+    {0x1.e666666666667p-1, chars_format::general, 1, "1"},
+    {0x1.2ffffffffffffp+3, chars_format::general, 1, "9"},
+    {0x1.3000000000000p+3, chars_format::general, 1, "1e+01"},
+    {0x1.a1554fbdad751p-14, chars_format::general, 2, "9.9e-05"},
+    {0x1.a1554fbdad752p-14, chars_format::general, 2, "0.0001"},
+    {0x1.04d551d68c692p-10, chars_format::general, 2, "0.00099"},
+    {0x1.04d551d68c693p-10, chars_format::general, 2, "0.001"},
+    {0x1.460aa64c2f837p-7, chars_format::general, 2, "0.0099"},
+    {0x1.460aa64c2f838p-7, chars_format::general, 2, "0.01"},
+    {0x1.978d4fdf3b645p-4, chars_format::general, 2, "0.099"},
+    {0x1.978d4fdf3b646p-4, chars_format::general, 2, "0.1"},
+    {0x1.fd70a3d70a3d7p-1, chars_format::general, 2, "0.99"},
+    {0x1.fd70a3d70a3d8p-1, chars_format::general, 2, "1"},
+    {0x1.3e66666666666p+3, chars_format::general, 2, "9.9"},
+    {0x1.3e66666666667p+3, chars_format::general, 2, "10"},
+    {0x1.8dfffffffffffp+6, chars_format::general, 2, "99"},
+    {0x1.8e00000000000p+6, chars_format::general, 2, "1e+02"},
+    {0x1.a3387ecc8eb96p-14, chars_format::general, 3, "9.99e-05"},
+    {0x1.a3387ecc8eb97p-14, chars_format::general, 3, "0.0001"},
+    {0x1.06034f3fd933ep-10, chars_format::general, 3, "0.000999"},
+    {0x1.06034f3fd933fp-10, chars_format::general, 3, "0.001"},
+    {0x1.4784230fcf80dp-7, chars_format::general, 3, "0.00999"},
+    {0x1.4784230fcf80ep-7, chars_format::general, 3, "0.01"},
+    {0x1.99652bd3c3611p-4, chars_format::general, 3, "0.0999"},
+    {0x1.99652bd3c3612p-4, chars_format::general, 3, "0.1"},
+    {0x1.ffbe76c8b4395p-1, chars_format::general, 3, "0.999"},
+    {0x1.ffbe76c8b4396p-1, chars_format::general, 3, "1"},
+    {0x1.3fd70a3d70a3dp+3, chars_format::general, 3, "9.99"},
+    {0x1.3fd70a3d70a3ep+3, chars_format::general, 3, "10"},
+    {0x1.8fcccccccccccp+6, chars_format::general, 3, "99.9"},
+    {0x1.8fccccccccccdp+6, chars_format::general, 3, "100"},
+    {0x1.f3bffffffffffp+9, chars_format::general, 3, "999"},
+    {0x1.f3c0000000000p+9, chars_format::general, 3, "1e+03"},
+    {0x1.a368d04e0ba6ap-14, chars_format::general, 4, "9.999e-05"},
+    {0x1.a368d04e0ba6bp-14, chars_format::general, 4, "0.0001"},
+    {0x1.06218230c7482p-10, chars_format::general, 4, "0.0009999"},
+    {0x1.06218230c7483p-10, chars_format::general, 4, "0.001"},
+    {0x1.47a9e2bcf91a3p-7, chars_format::general, 4, "0.009999"},
+    {0x1.47a9e2bcf91a4p-7, chars_format::general, 4, "0.01"},
+    {0x1.99945b6c3760bp-4, chars_format::general, 4, "0.09999"},
+    {0x1.99945b6c3760cp-4, chars_format::general, 4, "0.1"},
+    {0x1.fff972474538ep-1, chars_format::general, 4, "0.9999"},
+    {0x1.fff972474538fp-1, chars_format::general, 4, "1"},
+    {0x1.3ffbe76c8b439p+3, chars_format::general, 4, "9.999"},
+    {0x1.3ffbe76c8b43ap+3, chars_format::general, 4, "10"},
+    {0x1.8ffae147ae147p+6, chars_format::general, 4, "99.99"},
+    {0x1.8ffae147ae148p+6, chars_format::general, 4, "100"},
+    {0x1.f3f9999999999p+9, chars_format::general, 4, "999.9"},
+    {0x1.f3f999999999ap+9, chars_format::general, 4, "1000"},
+    {0x1.387bfffffffffp+13, chars_format::general, 4, "9999"},
+    {0x1.387c000000000p+13, chars_format::general, 4, "1e+04"},
+    {0x1.a36da54164f19p-14, chars_format::general, 5, "9.9999e-05"},
+    {0x1.a36da54164f1ap-14, chars_format::general, 5, "0.0001"},
+    {0x1.06248748df16fp-10, chars_format::general, 5, "0.00099999"},
+    {0x1.06248748df170p-10, chars_format::general, 5, "0.001"},
+    {0x1.47ada91b16dcbp-7, chars_format::general, 5, "0.0099999"},
+    {0x1.47ada91b16dccp-7, chars_format::general, 5, "0.01"},
+    {0x1.99991361dc93ep-4, chars_format::general, 5, "0.099999"},
+    {0x1.99991361dc93fp-4, chars_format::general, 5, "0.1"},
+    {0x1.ffff583a53b8ep-1, chars_format::general, 5, "0.99999"},
+    {0x1.ffff583a53b8fp-1, chars_format::general, 5, "1"},
+    {0x1.3fff972474538p+3, chars_format::general, 5, "9.9999"},
+    {0x1.3fff972474539p+3, chars_format::general, 5, "10"},
+    {0x1.8fff7ced91687p+6, chars_format::general, 5, "99.999"},
+    {0x1.8fff7ced91688p+6, chars_format::general, 5, "100"},
+    {0x1.f3ff5c28f5c28p+9, chars_format::general, 5, "999.99"},
+    {0x1.f3ff5c28f5c29p+9, chars_format::general, 5, "1000"},
+    {0x1.387f999999999p+13, chars_format::general, 5, "9999.9"},
+    {0x1.387f99999999ap+13, chars_format::general, 5, "10000"},
+    {0x1.869f7ffffffffp+16, chars_format::general, 5, "99999"},
+    {0x1.869f800000000p+16, chars_format::general, 5, "1e+05"},
+    {0x1.a36e20f35445dp-14, chars_format::general, 6, "9.99999e-05"},
+    {0x1.a36e20f35445ep-14, chars_format::general, 6, "0.0001"},
+    {0x1.0624d49814abap-10, chars_format::general, 6, "0.000999999"},
+    {0x1.0624d49814abbp-10, chars_format::general, 6, "0.001"},
+    {0x1.47ae09be19d69p-7, chars_format::general, 6, "0.00999999"},
+    {0x1.47ae09be19d6ap-7, chars_format::general, 6, "0.01"},
+    {0x1.99998c2da04c3p-4, chars_format::general, 6, "0.0999999"},
+    {0x1.99998c2da04c4p-4, chars_format::general, 6, "0.1"},
+    {0x1.ffffef39085f4p-1, chars_format::general, 6, "0.999999"},
+    {0x1.ffffef39085f5p-1, chars_format::general, 6, "1"},
+    {0x1.3ffff583a53b8p+3, chars_format::general, 6, "9.99999"},
+    {0x1.3ffff583a53b9p+3, chars_format::general, 6, "10"},
+    {0x1.8ffff2e48e8a7p+6, chars_format::general, 6, "99.9999"},
+    {0x1.8ffff2e48e8a8p+6, chars_format::general, 6, "100"},
+    {0x1.f3ffef9db22d0p+9, chars_format::general, 6, "999.999"},
+    {0x1.f3ffef9db22d1p+9, chars_format::general, 6, "1000"},
+    {0x1.387ff5c28f5c2p+13, chars_format::general, 6, "9999.99"},
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+    {0x1.1ccf385ebc8a0p+1023, chars_format::general, 309,
+        "10000000000000000109790636294404554174049230967731184633681068290315758540491149153716332897849468889906124966"
+        "97211725156115902837431400883283070091981460460312716645029330271856974896995885590433383844661650011784268976"
+        "26212945177628091195786707458122783970171784415105291802893207873272974885715430223118336"},
+    {0x1.fffffffffffffp+1023, chars_format::general, 309,
+        "17976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045895"
+        "35143824642343213268894641827684675467035375169860499105765512820762454900903893289440758685084551339423045832"
+        "36903222948165808559332123348274797826204144723168738177180919299881250404026184124858368"},
+
+    // The UCRT had trouble with rounding this value. charconv was never affected, but let's test it anyways.
+    {0x1.88e2d605edc3dp+345, chars_format::general, 105,
+        "109995565999999994887854821710219658911365648587951921896774663603198787416706536331386569598149846892544"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 19, "1.099955659999999949e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 18, "1.09995565999999995e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 17, "1.0999556599999999e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 16, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 15, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 14, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 13, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 12, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 11, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 10, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 9, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 8, "1.0999557e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 7, "1.099956e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 6, "1.09996e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 5, "1.1e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 4, "1.1e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 3, "1.1e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 2, "1.1e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::general, 1, "1e+104"},
+
+    // More cases that the UCRT had trouble with (e.g. DevCom-1093399).
+    {0x1.8p+62, chars_format::general, 17, "6.9175290276410819e+18"},
+    {0x1.0a2742p+17, chars_format::general, 6, "136271"},
+    {0x1.f8b0f962cdffbp+205, chars_format::general, 14, "1.0137595739223e+62"},
+    {0x1.f8b0f962cdffbp+205, chars_format::general, 17, "1.0137595739222531e+62"},
+    {0x1.f8b0f962cdffbp+205, chars_format::general, 51, "1.01375957392225305727423222620636224221808910954041e+62"},
+    {0x1.f8b0f962cdffbp+205, chars_format::general, 55, "1.013759573922253057274232226206362242218089109540405973e+62"},
+};
+
+#endif // DOUBLE_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_hex_precision_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_hex_precision_to_chars_test_cases.hpp
new file mode 100644
index 0000000..51b75cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_hex_precision_to_chars_test_cases.hpp
@@ -0,0 +1,120 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef DOUBLE_HEX_PRECISION_TO_CHARS_TEST_CASES_HPP
+#define DOUBLE_HEX_PRECISION_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_hex_precision_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0, chars_format::hex, 4, "0.0000p+0"},
+    {-0.0, chars_format::hex, 4, "-0.0000p+0"},
+    {double_inf, chars_format::hex, 4, "inf"},
+    {-double_inf, chars_format::hex, 4, "-inf"},
+    {double_nan, chars_format::hex, 4, "nan"},
+    {-double_nan, chars_format::hex, 4, "-nan(ind)"},
+    {double_nan_payload, chars_format::hex, 4, "nan"},
+    {-double_nan_payload, chars_format::hex, 4, "-nan"},
+    {0x1.729p+0, chars_format::hex, 4, "1.7290p+0"},
+    {-0x1.729p+0, chars_format::hex, 4, "-1.7290p+0"},
+
+    // Test hexfloat corner cases.
+    {0x1.728p+0, chars_format::hex, 13, "1.7280000000000p+0"},
+    {0x0.0000000000001p-1022, chars_format::hex, 13, "0.0000000000001p-1022"}, // min subnormal
+    {0x0.fffffffffffffp-1022, chars_format::hex, 13, "0.fffffffffffffp-1022"}, // max subnormal
+    {0x1p-1022, chars_format::hex, 13, "1.0000000000000p-1022"}, // min normal
+    {0x1.fffffffffffffp+1023, chars_format::hex, 13, "1.fffffffffffffp+1023"}, // max normal
+
+    // Test hexfloat exponents.
+    {0x1p-1009, chars_format::hex, 0, "1p-1009"},
+    {0x1p-999, chars_format::hex, 0, "1p-999"},
+    {0x1p-99, chars_format::hex, 0, "1p-99"},
+    {0x1p-9, chars_format::hex, 0, "1p-9"},
+    {0x1p+0, chars_format::hex, 0, "1p+0"},
+    {0x1p+9, chars_format::hex, 0, "1p+9"},
+    {0x1p+99, chars_format::hex, 0, "1p+99"},
+    {0x1p+999, chars_format::hex, 0, "1p+999"},
+    {0x1p+1009, chars_format::hex, 0, "1p+1009"},
+
+    // Test hexfloat hexits.
+    {0x1.01234567p+0, chars_format::hex, 8, "1.01234567p+0"},
+    {0x1.89abcdefp+0, chars_format::hex, 8, "1.89abcdefp+0"},
+
+    // Test varying precision. Negative precision requests full precision, not shortest round-trip.
+    {0x1.1234561234561p+0, chars_format::hex, -2, "1.1234561234561p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, -1, "1.1234561234561p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 0, "1p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 1, "1.1p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 2, "1.12p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 3, "1.123p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 4, "1.1234p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 5, "1.12345p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 6, "1.123456p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 7, "1.1234561p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 8, "1.12345612p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 9, "1.123456123p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 10, "1.1234561234p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 11, "1.12345612345p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 12, "1.123456123456p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 13, "1.1234561234561p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 14, "1.12345612345610p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 15, "1.123456123456100p+0"},
+    {0x1.1234561234561p+0, chars_format::hex, 16, "1.1234561234561000p+0"},
+
+    // Test rounding at every position.
+    {0x1.cccccccccccccp+0, chars_format::hex, 0, "2p+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 1, "1.dp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 2, "1.cdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 3, "1.ccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 4, "1.cccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 5, "1.ccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 6, "1.cccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 7, "1.ccccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 8, "1.cccccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 9, "1.ccccccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 10, "1.cccccccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 11, "1.ccccccccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 12, "1.cccccccccccdp+0"},
+    {0x1.cccccccccccccp+0, chars_format::hex, 13, "1.cccccccccccccp+0"},
+
+    // Test all combinations of least significant bit, round bit, and trailing bits.
+    {0x1.04000p+0, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 0, Trailing 0
+    {0x1.04001p+0, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 0 and Trailing 1 in different hexits
+    {0x1.04200p+0, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 0 and Trailing 1 in same hexit
+    {0x1.04800p+0, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 1, Trailing 0
+    {0x1.04801p+0, chars_format::hex, 2, "1.05p+0"}, // Lsb 0, Round 1 and Trailing 1 in different hexits
+    {0x1.04900p+0, chars_format::hex, 2, "1.05p+0"}, // Lsb 0, Round 1 and Trailing 1 in same hexit
+    {0x1.05000p+0, chars_format::hex, 2, "1.05p+0"}, // Lsb 1, Round 0, Trailing 0
+    {0x1.05001p+0, chars_format::hex, 2, "1.05p+0"}, // Lsb 1, Round 0 and Trailing 1 in different hexits
+    {0x1.05200p+0, chars_format::hex, 2, "1.05p+0"}, // Lsb 1, Round 0 and Trailing 1 in same hexit
+    {0x1.05800p+0, chars_format::hex, 2, "1.06p+0"}, // Lsb 1, Round 1, Trailing 0
+    {0x1.05801p+0, chars_format::hex, 2, "1.06p+0"}, // Lsb 1, Round 1 and Trailing 1 in different hexits
+    {0x1.05900p+0, chars_format::hex, 2, "1.06p+0"}, // Lsb 1, Round 1 and Trailing 1 in same hexit
+
+    // Test carry propagation.
+    {0x1.0affffffffffep+0, chars_format::hex, 12, "1.0b0000000000p+0"},
+
+    // Test carry propagation into the leading hexit.
+    {0x0.fffffffffffffp-1022, chars_format::hex, 12, "1.000000000000p-1022"},
+    {0x1.fffffffffffffp+1023, chars_format::hex, 12, "2.000000000000p+1023"},
+
+    // Test how the leading hexit participates in the rounding decision.
+    {0x0.000p+0, chars_format::hex, 0, "0p+0"},
+    {0x0.001p-1022, chars_format::hex, 0, "0p-1022"},
+    {0x0.200p-1022, chars_format::hex, 0, "0p-1022"},
+    {0x0.800p-1022, chars_format::hex, 0, "0p-1022"},
+    {0x0.801p-1022, chars_format::hex, 0, "1p-1022"},
+    {0x0.900p-1022, chars_format::hex, 0, "1p-1022"},
+    {0x1.000p+0, chars_format::hex, 0, "1p+0"},
+    {0x1.001p+0, chars_format::hex, 0, "1p+0"},
+    {0x1.200p+0, chars_format::hex, 0, "1p+0"},
+    {0x1.800p+0, chars_format::hex, 0, "2p+0"},
+    {0x1.801p+0, chars_format::hex, 0, "2p+0"},
+    {0x1.900p+0, chars_format::hex, 0, "2p+0"},
+};
+
+#endif // DOUBLE_HEX_PRECISION_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_1.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_1.hpp
new file mode 100644
index 0000000..b2ba18b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_1.hpp
@@ -0,0 +1,327 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_1_HPP
+#define DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_1_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_scientific_precision_to_chars_test_cases_1[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0, chars_format::scientific, 4, "0.0000e+00"},
+    {-0.0, chars_format::scientific, 4, "-0.0000e+00"},
+    {double_inf, chars_format::scientific, 4, "inf"},
+    {-double_inf, chars_format::scientific, 4, "-inf"},
+    {double_nan, chars_format::scientific, 4, "nan"},
+    {-double_nan, chars_format::scientific, 4, "-nan(ind)"},
+    {double_nan_payload, chars_format::scientific, 4, "nan"},
+    {-double_nan_payload, chars_format::scientific, 4, "-nan"},
+    {1.729, chars_format::scientific, 4, "1.7290e+00"},
+    {-1.729, chars_format::scientific, 4, "-1.7290e+00"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest Basic
+    {0x1.000000001869fp+211, chars_format::scientific, 62,
+        "3.29100911471548643542566484557342614975886952410844652587974656e+63"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest Zero
+    {0.0, chars_format::scientific, 4, "0.0000e+00"},
+    {0.0, chars_format::scientific, 3, "0.000e+00"},
+    {0.0, chars_format::scientific, 2, "0.00e+00"},
+    {0.0, chars_format::scientific, 1, "0.0e+00"},
+    {0.0, chars_format::scientific, 0, "0e+00"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest MinMax
+    {0x0.0000000000001p-1022, chars_format::scientific, 750,
+        "4.9406564584124654417656879286822137236505980261432476442558568250067550727020875186529983"
+        "636163599237979656469544571773092665671035593979639877479601078187812630071319031140452784"
+        "581716784898210368871863605699873072305000638740915356498438731247339727316961514003171538"
+        "539807412623856559117102665855668676818703956031062493194527159149245532930545654440112748"
+        "012970999954193198940908041656332452475714786901472678015935523861155013480352649347201937"
+        "902681071074917033322268447533357208324319360923828934583680601060115061698097530783422773"
+        "183292479049825247307763759272478746560847782037344696995336470179726777175851256605511991"
+        "315048911014510378627381672509558373897335989936648099411642057026370902792427675445652290"
+        "87538682506419718265533447265625e-324"},
+
+    {0x1.fffffffffffffp+1023, chars_format::scientific, 308,
+        "1.7976931348623157081452742373170435679807056752584499659891747680315726078002853876058955"
+        "863276687817154045895351438246423432132688946418276846754670353751698604991057655128207624"
+        "549009038932894407586850845513394230458323690322294816580855933212334827479782620414472316"
+        "8738177180919299881250404026184124858368e+308"},
+
+    // Test more corner cases.
+    {0x0.fffffffffffffp-1022, chars_format::scientific, 766,
+        "2."
+        "2250738585072008890245868760858598876504231122409594654935248025624400092282356951787758888037591552642309"
+        "7809504343120858773871583572918219930202943792242235598198275012420417889695713117910822610439719796040004"
+        "5489739193807919893608152561311337614984204327175103362739154978273159414382813627511383860409424946494228"
+        "6316695429105080201815926642134996606517803095075913058719846423906068637102005108723282784678843631944515"
+        "8661350412234790147923695852083215976210663754016137365830441936037147783553066828345356340050740730401356"
+        "0296804637591858316312422452159926254649430083685186171942241764645513713542013221703137049658321015465406"
+        "8035397417906022589503023501937519773030945763173210852507299305089761582519159720757232455434770912461317"
+        "493580281734466552734375e-308"}, // max subnormal
+    {0x1p-1022, chars_format::scientific, 714,
+        "2."
+        "2250738585072013830902327173324040642192159804623318305533274168872044348139181958542831590125110205640673"
+        "3973103581100515243416155346010885601238537771882113077799353200233047961014744258363607192156504694250373"
+        "4208375250806650616658158948720491179968591639648500635908770118304874799780887753749949451580451605050915"
+        "3998565824708186451135379358049921159810857660519924333521143523901487956996095912888916029926415110634663"
+        "1339366347758651302937176204732563178148566435087212282863764204484681140761391147706280168985324411002416"
+        "1447421618567166150540154285084716752901903161322778896729707373123334086988983175067838846926092773977972"
+        "858659654941091369095406136467568702398678315290680984617210924625396728515625e-308"}, // min normal
+
+    // Ryu Printf d2fixed_test.cc D2expTest RoundToEven
+    {0.125, chars_format::scientific, 2, "1.25e-01"},
+    {0.125, chars_format::scientific, 1, "1.2e-01"},
+    {0.375, chars_format::scientific, 2, "3.75e-01"},
+    {0.375, chars_format::scientific, 1, "3.8e-01"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest RoundToEvenInteger
+    {2.5, chars_format::scientific, 1, "2.5e+00"},
+    {2.5, chars_format::scientific, 0, "2e+00"},
+    {3.5, chars_format::scientific, 1, "3.5e+00"},
+    {3.5, chars_format::scientific, 0, "4e+00"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest NonRoundToEvenScenarios
+    {0.748046875, chars_format::scientific, 2, "7.48e-01"},
+    {0.748046875, chars_format::scientific, 1, "7.5e-01"},
+    {0.748046875, chars_format::scientific, 0, "7e-01"}, // 0.75 would round to "8e-01", but this is smaller
+
+    {0.2509765625, chars_format::scientific, 2, "2.51e-01"},
+    {0.2509765625, chars_format::scientific, 1, "2.5e-01"},
+    {0.2509765625, chars_format::scientific, 0, "3e-01"}, // 0.25 would round to "2e-01", but this is larger
+
+    {0x1.0000000000001p-2, chars_format::scientific, 53, "2.50000000000000055511151231257827021181583404541015625e-01"},
+    {0x1.0000000000001p-2, chars_format::scientific, 2, "2.50e-01"},
+    {0x1.0000000000001p-2, chars_format::scientific, 1, "2.5e-01"},
+    {0x1.0000000000001p-2, chars_format::scientific, 0,
+        "3e-01"}, // 0.25 would round to "2e-01", but this is larger (again)
+
+    // More rounding tests.
+    {9.5, chars_format::scientific, 1, "9.5e+00"},
+    {9.5, chars_format::scientific, 0, "1e+01"},
+    {10.5, chars_format::scientific, 2, "1.05e+01"},
+    {10.5, chars_format::scientific, 1, "1.0e+01"},
+
+    {1.241, chars_format::scientific, 3, "1.241e+00"},
+    {1.241, chars_format::scientific, 1, "1.2e+00"},
+    {1.251, chars_format::scientific, 3, "1.251e+00"},
+    {1.251, chars_format::scientific, 1, "1.3e+00"},
+    {1.261, chars_format::scientific, 3, "1.261e+00"},
+    {1.261, chars_format::scientific, 1, "1.3e+00"},
+    {1.341, chars_format::scientific, 3, "1.341e+00"},
+    {1.341, chars_format::scientific, 1, "1.3e+00"},
+    {1.351, chars_format::scientific, 3, "1.351e+00"},
+    {1.351, chars_format::scientific, 1, "1.4e+00"},
+    {1.361, chars_format::scientific, 3, "1.361e+00"},
+    {1.361, chars_format::scientific, 1, "1.4e+00"},
+
+    {2.41, chars_format::scientific, 2, "2.41e+00"},
+    {2.41, chars_format::scientific, 0, "2e+00"},
+    {2.51, chars_format::scientific, 2, "2.51e+00"},
+    {2.51, chars_format::scientific, 0, "3e+00"},
+    {2.61, chars_format::scientific, 2, "2.61e+00"},
+    {2.61, chars_format::scientific, 0, "3e+00"},
+    {3.41, chars_format::scientific, 2, "3.41e+00"},
+    {3.41, chars_format::scientific, 0, "3e+00"},
+    {3.51, chars_format::scientific, 2, "3.51e+00"},
+    {3.51, chars_format::scientific, 0, "4e+00"},
+    {3.61, chars_format::scientific, 2, "3.61e+00"},
+    {3.61, chars_format::scientific, 0, "4e+00"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest VaryingPrecision
+    {1729.142857142857, chars_format::scientific, 50, "1.72914285714285711037518922239542007446289062500000e+03"},
+    {1729.142857142857, chars_format::scientific, 49, "1.7291428571428571103751892223954200744628906250000e+03"},
+    {1729.142857142857, chars_format::scientific, 48, "1.729142857142857110375189222395420074462890625000e+03"},
+    {1729.142857142857, chars_format::scientific, 47, "1.72914285714285711037518922239542007446289062500e+03"},
+    {1729.142857142857, chars_format::scientific, 46, "1.7291428571428571103751892223954200744628906250e+03"},
+    {1729.142857142857, chars_format::scientific, 45, "1.729142857142857110375189222395420074462890625e+03"},
+    {1729.142857142857, chars_format::scientific, 44, "1.72914285714285711037518922239542007446289062e+03"},
+    {1729.142857142857, chars_format::scientific, 43, "1.7291428571428571103751892223954200744628906e+03"},
+    {1729.142857142857, chars_format::scientific, 42, "1.729142857142857110375189222395420074462891e+03"},
+    {1729.142857142857, chars_format::scientific, 41, "1.72914285714285711037518922239542007446289e+03"},
+    {1729.142857142857, chars_format::scientific, 40, "1.7291428571428571103751892223954200744629e+03"},
+    {1729.142857142857, chars_format::scientific, 39, "1.729142857142857110375189222395420074463e+03"},
+    {1729.142857142857, chars_format::scientific, 38, "1.72914285714285711037518922239542007446e+03"},
+    {1729.142857142857, chars_format::scientific, 37, "1.7291428571428571103751892223954200745e+03"},
+    {1729.142857142857, chars_format::scientific, 36, "1.729142857142857110375189222395420074e+03"},
+    {1729.142857142857, chars_format::scientific, 35, "1.72914285714285711037518922239542007e+03"},
+    {1729.142857142857, chars_format::scientific, 34, "1.7291428571428571103751892223954201e+03"},
+    {1729.142857142857, chars_format::scientific, 33, "1.729142857142857110375189222395420e+03"},
+    {1729.142857142857, chars_format::scientific, 32, "1.72914285714285711037518922239542e+03"},
+    {1729.142857142857, chars_format::scientific, 31, "1.7291428571428571103751892223954e+03"},
+    {1729.142857142857, chars_format::scientific, 30, "1.729142857142857110375189222395e+03"},
+    {1729.142857142857, chars_format::scientific, 29, "1.72914285714285711037518922240e+03"},
+    {1729.142857142857, chars_format::scientific, 28, "1.7291428571428571103751892224e+03"},
+    {1729.142857142857, chars_format::scientific, 27, "1.729142857142857110375189222e+03"},
+    {1729.142857142857, chars_format::scientific, 26, "1.72914285714285711037518922e+03"},
+    {1729.142857142857, chars_format::scientific, 25, "1.7291428571428571103751892e+03"},
+    {1729.142857142857, chars_format::scientific, 24, "1.729142857142857110375189e+03"},
+    {1729.142857142857, chars_format::scientific, 23, "1.72914285714285711037519e+03"},
+    {1729.142857142857, chars_format::scientific, 22, "1.7291428571428571103752e+03"},
+    {1729.142857142857, chars_format::scientific, 21, "1.729142857142857110375e+03"},
+    {1729.142857142857, chars_format::scientific, 20, "1.72914285714285711038e+03"},
+    {1729.142857142857, chars_format::scientific, 19, "1.7291428571428571104e+03"},
+    {1729.142857142857, chars_format::scientific, 18, "1.729142857142857110e+03"},
+    {1729.142857142857, chars_format::scientific, 17, "1.72914285714285711e+03"},
+    {1729.142857142857, chars_format::scientific, 16, "1.7291428571428571e+03"},
+    {1729.142857142857, chars_format::scientific, 15, "1.729142857142857e+03"},
+    {1729.142857142857, chars_format::scientific, 14, "1.72914285714286e+03"},
+    {1729.142857142857, chars_format::scientific, 13, "1.7291428571429e+03"},
+    {1729.142857142857, chars_format::scientific, 12, "1.729142857143e+03"},
+    {1729.142857142857, chars_format::scientific, 11, "1.72914285714e+03"},
+    {1729.142857142857, chars_format::scientific, 10, "1.7291428571e+03"},
+    {1729.142857142857, chars_format::scientific, 9, "1.729142857e+03"},
+    {1729.142857142857, chars_format::scientific, 8, "1.72914286e+03"},
+    {1729.142857142857, chars_format::scientific, 7, "1.7291429e+03"},
+    {1729.142857142857, chars_format::scientific, 6, "1.729143e+03"},
+    {1729.142857142857, chars_format::scientific, 5, "1.72914e+03"},
+    {1729.142857142857, chars_format::scientific, 4, "1.7291e+03"},
+    {1729.142857142857, chars_format::scientific, 3, "1.729e+03"},
+    {1729.142857142857, chars_format::scientific, 2, "1.73e+03"},
+    {1729.142857142857, chars_format::scientific, 1, "1.7e+03"},
+    {1729.142857142857, chars_format::scientific, 0, "2e+03"},
+
+    // Negative precision requests 6 digits of precision.
+    {1729.142857142857, chars_format::scientific, -1, "1.729143e+03"},
+    {1729.142857142857, chars_format::scientific, -2, "1.729143e+03"},
+    {1729.142857142857, chars_format::scientific, -3, "1.729143e+03"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest Carrying
+    {2.0009, chars_format::scientific, 4, "2.0009e+00"},
+    {2.0009, chars_format::scientific, 3, "2.001e+00"},
+    {2.0029, chars_format::scientific, 4, "2.0029e+00"},
+    {2.0029, chars_format::scientific, 3, "2.003e+00"},
+    {2.0099, chars_format::scientific, 4, "2.0099e+00"},
+    {2.0099, chars_format::scientific, 3, "2.010e+00"},
+    {2.0299, chars_format::scientific, 4, "2.0299e+00"},
+    {2.0299, chars_format::scientific, 3, "2.030e+00"},
+    {2.0999, chars_format::scientific, 4, "2.0999e+00"},
+    {2.0999, chars_format::scientific, 3, "2.100e+00"},
+    {2.2999, chars_format::scientific, 4, "2.2999e+00"},
+    {2.2999, chars_format::scientific, 3, "2.300e+00"},
+    {2.9999, chars_format::scientific, 4, "2.9999e+00"},
+    {2.9999, chars_format::scientific, 3, "3.000e+00"},
+    {9.9999, chars_format::scientific, 4, "9.9999e+00"},
+    {9.9999, chars_format::scientific, 3, "1.000e+01"},
+
+    {2.09, chars_format::scientific, 2, "2.09e+00"},
+    {2.09, chars_format::scientific, 1, "2.1e+00"},
+    {2.29, chars_format::scientific, 2, "2.29e+00"},
+    {2.29, chars_format::scientific, 1, "2.3e+00"},
+    {2.99, chars_format::scientific, 2, "2.99e+00"},
+    {2.99, chars_format::scientific, 1, "3.0e+00"},
+    {9.99, chars_format::scientific, 2, "9.99e+00"},
+    {9.99, chars_format::scientific, 1, "1.0e+01"},
+
+    {2.9, chars_format::scientific, 1, "2.9e+00"},
+    {2.9, chars_format::scientific, 0, "3e+00"},
+    {9.9, chars_format::scientific, 1, "9.9e+00"},
+    {9.9, chars_format::scientific, 0, "1e+01"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest Exponents
+    {9.99e-100, chars_format::scientific, 2, "9.99e-100"},
+    {9.99e-99, chars_format::scientific, 2, "9.99e-99"},
+    {9.99e-10, chars_format::scientific, 2, "9.99e-10"},
+    {9.99e-09, chars_format::scientific, 2, "9.99e-09"},
+    {9.99e-01, chars_format::scientific, 2, "9.99e-01"},
+    {9.99e+00, chars_format::scientific, 2, "9.99e+00"},
+    {9.99e+01, chars_format::scientific, 2, "9.99e+01"},
+    {9.99e+09, chars_format::scientific, 2, "9.99e+09"},
+    {9.99e+10, chars_format::scientific, 2, "9.99e+10"},
+    {9.99e+99, chars_format::scientific, 2, "9.99e+99"},
+    {9.99e+100, chars_format::scientific, 2, "9.99e+100"},
+
+    {9.99e-100, chars_format::scientific, 1, "1.0e-99"},
+    {9.99e-99, chars_format::scientific, 1, "1.0e-98"},
+    {9.99e-10, chars_format::scientific, 1, "1.0e-09"},
+    {9.99e-09, chars_format::scientific, 1, "1.0e-08"},
+    {9.99e-01, chars_format::scientific, 1, "1.0e+00"},
+    {9.99e+00, chars_format::scientific, 1, "1.0e+01"},
+    {9.99e+01, chars_format::scientific, 1, "1.0e+02"},
+    {9.99e+09, chars_format::scientific, 1, "1.0e+10"},
+    {9.99e+10, chars_format::scientific, 1, "1.0e+11"},
+    {9.99e+99, chars_format::scientific, 1, "1.0e+100"},
+    {9.99e+100, chars_format::scientific, 1, "1.0e+101"},
+
+    // Ryu Printf d2fixed_test.cc D2expTest PrintDecimalPoint
+    // These values exercise each codepath.
+    {1e+54, chars_format::scientific, 0, "1e+54"},
+    {1e+54, chars_format::scientific, 1, "1.0e+54"},
+    {1e-63, chars_format::scientific, 0, "1e-63"},
+    {1e-63, chars_format::scientific, 1, "1.0e-63"},
+    {1e+83, chars_format::scientific, 0, "1e+83"},
+    {1e+83, chars_format::scientific, 1, "1.0e+83"},
+
+    // The UCRT had trouble with rounding this value. charconv was never affected, but let's test it anyways.
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 104,
+        "1.09995565999999994887854821710219658911365648587951921896774663603198787416706536331386569598149846892544e+"
+        "104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 18, "1.099955659999999949e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 17, "1.09995565999999995e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 16, "1.0999556599999999e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 15, "1.099955660000000e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 14, "1.09995566000000e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 13, "1.0999556600000e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 12, "1.099955660000e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 11, "1.09995566000e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 10, "1.0999556600e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 9, "1.099955660e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 8, "1.09995566e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 7, "1.0999557e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 6, "1.099956e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 5, "1.09996e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 4, "1.1000e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 3, "1.100e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 2, "1.10e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 1, "1.1e+104"},
+    {0x1.88e2d605edc3dp+345, chars_format::scientific, 0, "1e+104"},
+
+    // More cases that the UCRT had trouble with (e.g. DevCom-1093399).
+    {0x1.8p+62, chars_format::scientific, 16, "6.9175290276410819e+18"},
+    {0x1.0a2742p+17, chars_format::scientific, 5, "1.36271e+05"},
+    {0x1.f8b0f962cdffbp+205, chars_format::scientific, 13, "1.0137595739223e+62"},
+    {0x1.f8b0f962cdffbp+205, chars_format::scientific, 16, "1.0137595739222531e+62"},
+    {0x1.f8b0f962cdffbp+205, chars_format::scientific, 50, "1.01375957392225305727423222620636224221808910954041e+62"},
+    {0x1.f8b0f962cdffbp+205, chars_format::scientific, 54,
+        "1.013759573922253057274232226206362242218089109540405973e+62"},
+};
+
+#endif // DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_1_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_2.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_2.hpp
new file mode 100644
index 0000000..1dcd177
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_2.hpp
@@ -0,0 +1,3219 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_2_HPP
+#define DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_2_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_scientific_precision_to_chars_test_cases_2[] = {
+    // Ryu Printf d2fixed_test.cc D2expTest AllPowersOfTen
+    // These values test every power of ten that's within the range of doubles.
+    {1e-323, chars_format::scientific, 749,
+        "9."
+        "8813129168249308835313758573644274473011960522864952885117136500135101454041750373059967272327198475959312"
+        "9390891435461853313420711879592797549592021563756252601426380622809055691634335697964207377437272113997461"
+        "4461000127748183071299687746249467945463392302800634307707961482524771311823420533171133735363740791206212"
+        "4986389054318298491065861091308880225496025941999908386397881816083312664904951429573802945356031871047722"
+        "3100269607052986944038758053621421498340666445368950667144166486387218476578691673612021202301233961950615"
+        "6684554636658495809965049461552751854495749312169556407468939399067294035945355435170251321102398263009782"
+        "2029020757254763345019116747794671979873296198823284114052741805584855350891304581750773650128394365310668"
+        "9453125e-324"},
+    {1e-322, chars_format::scientific, 749,
+        "9."
+        "8813129168249308835313758573644274473011960522864952885117136500135101454041750373059967272327198475959312"
+        "9390891435461853313420711879592797549592021563756252601426380622809055691634335697964207377437272113997461"
+        "4461000127748183071299687746249467945463392302800634307707961482524771311823420533171133735363740791206212"
+        "4986389054318298491065861091308880225496025941999908386397881816083312664904951429573802945356031871047722"
+        "3100269607052986944038758053621421498340666445368950667144166486387218476578691673612021202301233961950615"
+        "6684554636658495809965049461552751854495749312169556407468939399067294035945355435170251321102398263009782"
+        "2029020757254763345019116747794671979873296198823284114052741805584855350891304581750773650128394365310668"
+        "9453125e-323"},
+    {1e-321, chars_format::scientific, 751,
+        "9."
+        "9801260459931801923666896159380717217742080128093602413968307865136452468582167876790566945050470460718906"
+        "0684800349816471846554918998388725525087941779393815127440644429037146248550679054943849451211644835137436"
+        "0605610129025664902012684623711962624918026225828640650785041097350019024941654738502845072717378199118274"
+        "6236252944861481475976519702221969027750986201419907470261860634244145791554000943869540974809592189758199"
+        "5331272303123516813479145634157635713324073109822640173815608151251090661344478590348141414324246301570121"
+        "8251400183025080768064699956168279373040706805291251971543628793057966976304808989521953834313422245639880"
+        "0249310964827310978469307915272618699672029160811516955193269223640703904400217627568281386629678308963775"
+        "634765625e-322"},
+    {1e-320, chars_format::scientific, 750,
+        "9."
+        "9998886718268300541337523676528005766688104049139332319738542138136722671490251377536686879595124857670824"
+        "6943582132687395553181760422147911120187125822521327632643497190282764359933947726339777865966519379365430"
+        "9834532129281161268155283999204461560808953010434241919400457020315068567565301579569187340188105680700687"
+        "0486225722970118072958651424404586788201978253303907287034656397876312416883810846728688580700304253500294"
+        "9777472842337622787367223150264878556320754442713378075149896484223865098297635973695365456728848769494023"
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+        "0000000000000000467538188854561279891896054313304102868413648727440164393945558946103682581803033369390768"
+        "8813404495028932616818466243033147431327741697981638738927986463793558699752023835231102266007829372867138"
+        "519293326106230343475263802678137754874196788463928344576e+269"},
+    {1e+270, chars_format::scientific, 269,
+        "1."
+        "0000000000000000467538188854561279891896054313304102868413648727440164393945558946103682581803033369390768"
+        "8813404495028932616818466243033147431327741697981638738927986463793558699752023835231102266007829372867138"
+        "519293326106230343475263802678137754874196788463928344576e+270"},
+    {1e+271, chars_format::scientific, 270,
+        "9."
+        "9999999999999995290985852539737511455013423746469952044436995337522223092081351007747372543990698759644940"
+        "5879902689682400928375844147591690679948638939044369127946865823435090410987852070094314805704679411017385"
+        "4458342872794765056233999682236635579342942941443126198272e+270"},
+    {1e+272, chars_format::scientific, 272,
+        "1."
+        "0000000000000000655226109574678785641174996701035524401207638566177752810893043715169471647283826068076023"
+        "8458487340241071121614642608687943103994317258797079104154646440083568631482671560875436423095301659220218"
+        "514235305581886882057848563849292034690350260273827761094656e+272"},
+    {1e+273, chars_format::scientific, 272,
+        "9."
+        "9999999999999994540234169659267488457897654195544265913261035982571869424291411931484216282067527964903920"
+        "7299571308833846909191138684972507989282336695782607667040225918275050684065261167516978177354790265605065"
+        "466066369376850351293060923539046438669680406904714953752576e+272"},
+    {1e+274, chars_format::scientific, 273,
+        "9."
+        "9999999999999992137828784441763414867127191632582070293497966046730737687363606887442116243913381421732657"
+        "1842510890118474047800081204591123379150169517344970992138978221762923557912970279269500966635145000285641"
+        "5308090320884466574359759805482716570229159677380024223137792e+273"},
+    {1e+275, chars_format::scientific, 274,
+        "9."
+        "9999999999999995981677400789769932612359931733321583285118877944076548466448094957909476304960015890806678"
+        "8573807560063070626025773173201338755361637002845189671980974536182326959756635700465464503786577424796719"
+        "82722077174989256760731188933351130765773907040474247261585408e+274"},
+    {1e+276, chars_format::scientific, 276,
+        "1."
+        "0000000000000000520691408002498557520091850797509641446500906649770649433625086632703114045147193861658433"
+        "0872891956793010241376743389786585565826915896804571450360176569078889512418143271133577699295001524362330"
+        "7738608946937362752018518070418086469181314516804918593340833792e+276"},
+    {1e+277, chars_format::scientific, 277,
+        "1."
+        "0000000000000000028678785109953723248702060064614983783573429926910385653902272159683291957333224649616958"
+        "3131285983040101879363854817804477997671848058660543459340401040833205876982154097220494366539618174024912"
+        "75192019201707119869992081071729797163687409453914913289541779456e+277"},
+    {1e+278, chars_format::scientific, 277,
+        "9."
+        "9999999999999996350686867959178558315902274782992576532314485486221746301240205812674342870820492799837784"
+        "9380012040377751897535439602187919431477937881453210665245806182366589686333627580900277003353114937549783"
+        "34367629875739137498376013657689431411868208826074951744485326848e+277"},
+    {1e+279, chars_format::scientific, 279,
+        "1."
+        "0000000000000000579732922749603937632658625685457000366052203856513881087191824369465492695684870167103410"
+        "0601884673643359244818290018424438474005524037381854809282549632468371548670461972003147699225647526402820"
+        "9364937790149360843820835266007499279518823345374529865067232493568e+279"},
+    {1e+280, chars_format::scientific, 280,
+        "1."
+        "0000000000000000327822459828620982485707052830214935642633335774409426031973743359279343786724117930538174"
+        "9758182415081870163467691069569599399110129304252112477880424562006581527327235514959649032854891251030062"
+        "90926013924448356521309485648260046220787856768108551057012647002112e+280"},
+    {1e+281, chars_format::scientific, 280,
+        "1."
+        "0000000000000000327822459828620982485707052830214935642633335774409426031973743359279343786724117930538174"
+        "9758182415081870163467691069569599399110129304252112477880424562006581527327235514959649032854891251030062"
+        "90926013924448356521309485648260046220787856768108551057012647002112e+281"},
+    {1e+282, chars_format::scientific, 280,
+        "1."
+        "0000000000000000327822459828620982485707052830214935642633335774409426031973743359279343786724117930538174"
+        "9758182415081870163467691069569599399110129304252112477880424562006581527327235514959649032854891251030062"
+        "90926013924448356521309485648260046220787856768108551057012647002112e+282"},
+    {1e+283, chars_format::scientific, 282,
+        "9."
+        "9999999999999995539535177353613442742718210189113128122905730261845401023437984959874943383966870598097727"
+        "9663290767809757055586510986875337610314766840775440358130963455479625817608438389220211297639279730849502"
+        "4959839786965342632596166187964530344229899589832462449290116390191104e+282"},
+    {1e+284, chars_format::scientific, 284,
+        "1."
+        "0000000000000000792143825084576765412568191916997109340838993423344357589751710277254453455720576452975216"
+        "2833294418062406838213115052098838781957320876356853543120821491881752894667070520582225774709469217797130"
+        "505057184069381648545374773244373557467226310750742042216461653692645376e+284"},
+    {1e+285, chars_format::scientific, 284,
+        "9."
+        "9999999999999998015915792052044285019310951985284721180002571056165035998253808522408861618614649384428614"
+        "9397221450372619320895438893697947652166455225334059372746413748147206443420891752540620587530362220273863"
+        "006901551095990707698442841525909542472844588688081080376132618600579072e+284"},
+    {1e+286, chars_format::scientific, 286,
+        "1."
+        "0000000000000000329886110340869674854270880115045078636847583141738025727786089878914788718586324412860117"
+        "3816294023984005882022115176158618240811672377905911327059270770583804511182079226095749373929800486437916"
+        "54301923722148311225012721166820834263125344653917287293299907083743789056e+286"},
+    {1e+287, chars_format::scientific, 287,
+        "1."
+        "0000000000000000752521735249401871936142708048258363851925443970635243430154657100253910763966211992393922"
+        "0917551527141401041968172205589677021287693862203915638886974287199071604654071266769099226071211897966340"
+        "736882502910990345434353553680702253338428636675464684849307718019341877248e+287"},
+    {1e+288, chars_format::scientific, 288,
+        "1."
+        "0000000000000000076304735395750356605147783355117107507800866644399695106364949546111315491358391865139834"
+        "5555539522089568786054480958499982972526059487327108739962648660614644255098884001691739462644953639520862"
+        "0267012778077787723395914064607119962069483324573977857832138825282954985472e+288"},
+    {1e+289, chars_format::scientific, 289,
+        "1."
+        "0000000000000000617278335278671568869943723109630112583100528505388133765396715589425391709444647966943104"
+        "5845149126131034590785433956171738211535366987228554259102109161882186134743033813753627273385960246277244"
+        "99484625789034803081540112423670420191213257583185130503608895092113260150784e+289"},
+    {1e+290, chars_format::scientific, 289,
+        "1."
+        "0000000000000000617278335278671568869943723109630112583100528505388133765396715589425391709444647966943104"
+        "5845149126131034590785433956171738211535366987228554259102109161882186134743033813753627273385960246277244"
+        "99484625789034803081540112423670420191213257583185130503608895092113260150784e+290"},
+    {1e+291, chars_format::scientific, 290,
+        "9."
+        "9999999999999995786090235034628413215355187809651428385251777322903315400557247862623653707190362514808261"
+        "2890986863714202457020042006419681526374965874177788623543449994485057258262661745948026767632275613049896"
+        "960078961318150545418464661067991669581788285529005480705688196068853638234112e+290"},
+    {1e+292, chars_format::scientific, 292,
+        "1."
+        "0000000000000000132565989783574162680686561089586460035632031477942492726904253214615979418039362499727374"
+        "6385658920909881229746500070257845517383027467316859073953152552746468610581875582146175794962018326623525"
+        "85538835573636597522107561710941518560028749376834095178551288964115055725510656e+292"},
+    {1e+293, chars_format::scientific, 292,
+        "9."
+        "9999999999999992462348437353960485060448933957923525202610654848990348279466077292501969423268405025328970"
+        "2311625456483436552753066788724417337901780594783307353950604674697279949729005300639788058439531021138680"
+        "00379620369084502134308975505229555772913629423636305841602377586326247764393984e+292"},
+    {1e+294, chars_format::scientific, 294,
+        "1."
+        "0000000000000000664364677412481031185471561705862924544854611073768567466278840505835448903466875698044061"
+        "2078356746066803774429216105089087787538737112019976077088007803912512979947260613395493988432857461329320"
+        "5683935969567348590731356020719265634967118123751637393518591968740451429495341056e+294"},
+    {1e+295, chars_format::scientific, 294,
+        "9."
+        "9999999999999998134867772062300415778155607198205813300984837204468478832795008398842977267828545807373626"
+        "9700402258157277029368704493591001552896016804949888720722394020468419889626445633965848788795148458000490"
+        "2758521100414464490983962613190835886243290260424727924570510530141380583845003264e+294"},
+    {1e+296, chars_format::scientific, 294,
+        "9."
+        "9999999999999998134867772062300415778155607198205813300984837204468478832795008398842977267828545807373626"
+        "9700402258157277029368704493591001552896016804949888720722394020468419889626445633965848788795148458000490"
+        "2758521100414464490983962613190835886243290260424727924570510530141380583845003264e+295"},
+    {1e+297, chars_format::scientific, 297,
+        "1."
+        "0000000000000000176528014627563797143748787807198647768394431391197448238692552430690122228834703590788220"
+        "7282921941122853493440271262470561545049232797945650079545633920176194945116080744729452765622274361759204"
+        "8849967890105831362861792425329827928397252374398383022243308510390698430058459037696e+297"},
+    {1e+298, chars_format::scientific, 297,
+        "9."
+        "9999999999999995956620347534297882382556244673937414671209151179964876700316698854008030255517451747068478"
+        "7823111966314522286348299614922233214338230100245921475882026911692302152705828545968641468338591362245555"
+        "1313826420028155008403585629126369847605750170289266545852965785882018353801250996224e+297"},
+    {1e+299, chars_format::scientific, 299,
+        "1."
+        "0000000000000000525047602552044202487044685811081591549158541155118024579889081957863713750804478640437044"
+        "4383288387817694252323536043057564479218478670698284838720092657580373783023379478809005936895323497079994"
+        "508111903896764088007465274278014249457925878882005684283811566947219638686545940054016e+299"},
+    {1e+300, chars_format::scientific, 299,
+        "1."
+        "0000000000000000525047602552044202487044685811081591549158541155118024579889081957863713750804478640437044"
+        "4383288387817694252323536043057564479218478670698284838720092657580373783023379478809005936895323497079994"
+        "508111903896764088007465274278014249457925878882005684283811566947219638686545940054016e+300"},
+    {1e+301, chars_format::scientific, 299,
+        "1."
+        "0000000000000000525047602552044202487044685811081591549158541155118024579889081957863713750804478640437044"
+        "4383288387817694252323536043057564479218478670698284838720092657580373783023379478809005936895323497079994"
+        "508111903896764088007465274278014249457925878882005684283811566947219638686545940054016e+301"},
+    {1e+302, chars_format::scientific, 302,
+        "1."
+        "0000000000000000762970307908489492534734685515065681170160173420621138028812579448414218896469178407663974"
+        "7577138548761372210387844799938291815611350519830750167649856488981626536368095414607314235151058373458986"
+        "890825155659063617715863205282622390509284183439858617103083735673849899204570498157510656e+302"},
+    {1e+303, chars_format::scientific, 303,
+        "1."
+        "0000000000000000001617650767864564382126686462316594382954950171011174992257387478652602430342139152537797"
+        "7356818033741602744582056777919964339154160602606861115074612228497617725665004420052727680732706769046211"
+        "2661427500197051226489898260678763391449376088547292320814127957486330655468919122263277568e+303"},
+    {1e+304, chars_format::scientific, 303,
+        "9."
+        "9999999999999993925355250553646218600402872201173249531907715713232045630132339028433092574405077484368561"
+        "1805616217257871719374263603053023579884086688277498730144168201104106771025316244090584371980254855159907"
+        "6639682550821832659549112269607949805346034918662572406407604380845959862074904348138143744e+303"},
+    {1e+305, chars_format::scientific, 303,
+        "9."
+        "9999999999999993925355250553646218600402872201173249531907715713232045630132339028433092574405077484368561"
+        "1805616217257871719374263603053023579884086688277498730144168201104106771025316244090584371980254855159907"
+        "6639682550821832659549112269607949805346034918662572406407604380845959862074904348138143744e+304"},
+    {1e+306, chars_format::scientific, 306,
+        "1."
+        "0000000000000000172160645967364548288310878250132389823288920178923806712445750479879204518754595945686061"
+        "3886169829106031104922553294852069693880571144065012262851466942846035699262496802832955068922417528434673"
+        "0060716088829214255439694630119794546505512415617982143262670862918816362862119154749127262208e+306"},
+    {1e+307, chars_format::scientific, 306,
+        "9."
+        "9999999999999998603105976025645777170026418381263638752496607358835658526727438490648464142289606667863792"
+        "8039265461539335317285025210333627595237061539701073069166468937517856903985107314633964162326607112672001"
+        "1020169553304018596457812688561947201171488461172921822139066929851282122002676667750021070848e+306"},
+    {1e+308, chars_format::scientific, 308,
+        "1."
+        "0000000000000000109790636294404554174049230967731184633681068290315758540491149153716332897849468889906124"
+        "9669721172515611590283743140088328307009198146046031271664502933027185697489699588559043338384466165001178"
+        "426897626212945177628091195786707458122783970171784415105291802893207873272974885715430223118336e+308"},
+};
+
+#endif // DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_2_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_3.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_3.hpp
new file mode 100644
index 0000000..ccd8f4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_3.hpp
@@ -0,0 +1,10125 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_3_HPP
+#define DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_3_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_scientific_precision_to_chars_test_cases_3[] = {
+    // Ryu Printf d2fixed_test.cc D2expTest AllBinaryExponents
+    // These values test every binary exponent.
+    // The mantissas were randomly generated.
+    {0x0.63b831e8bd9d7p-1022, chars_format::scientific, 765,
+        "8."
+        "6673155601518373204745615934992065170006880827787289636461039456117181014435225731420739682086431846196084"
+        "0559717761976781401452617612090003075542930260777812518669659241729724010681746641686623499848468215594968"
+        "2021079153402945471922988971873909012440740220527800911244244822910902773084448896950002963160859062629660"
+        "9882885374947604962348974323036144310657614326754120115556509383797380330234783520222245524583876671362471"
+        "8494080431858617260899963028423305531253945552260335123939000593240656910669298632181747412649714974019858"
+        "8356285761402581880926947783051518340651609793980053160313425027619711896255545853478748493923212623215309"
+        "2624291889535798750202922731324119623206905408779063259071595105183391812893811664489504206776437911230459"
+        "57647264003753662109375e-309"},
+    {0x1.8777195166b0cp-1022, chars_format::scientific, 764,
+        "3."
+        "4024962888548891870780380223721963415936057267215768489022880931036340709664117046765987977180526441192766"
+        "7980233377849338161398396361988635343561859686478002041658296279167269633549887180398681467085048366045915"
+        "6676370951509663121515851044197786647785688189698831775149285429703757400159268959324595109001459740108998"
+        "7064349011889817819942001416735892399032878298656443356501797788246594163297203747575928614864543561706962"
+        "7150190560661004463760153276800654567748203691908193307868018274961903878508519765463087823925880361092267"
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+        "4264187555897655767726624817103774897165687722073995863869146194224654264271815412764432183860307112674231"
+        "109279315205969947330246145602344386623802171762035716381797595664546003263242377363456e+300"},
+    {0x1.042ea27af2ccfp+1000, chars_format::scientific, 301,
+        "1."
+        "0890134027784214313930348009402099228804786388308427577549589000490524838171536880083316594376503360923820"
+        "3927956167113377874488765241234494902547691411017945498443986695825206736398283043101155534160891992194911"
+        "53554556979108530787196381372092387340130982723560970359575450657479047437786029202866176e+301"},
+    {0x1.19cacda6d507cp+1001, chars_format::scientific, 301,
+        "2."
+        "3589278771025920045285827982461236796817036300877185977488554279335842158782244191985990632926121503077907"
+        "6520003666559211241592367336689930498536187798295766946194279734738125370727052729831736723306360154337779"
+        "50412177760641174727204088780046261172088405036986621286405986734378144157024874903109632e+301"},
+    {0x1.e4dc48c30aebdp+1002, chars_format::scientific, 301,
+        "8."
+        "1176903631052648655337080884157138757428798522929058319900963020890052053982712181300446346333787829121700"
+        "3535527368462203251795552837011494935291596633256317483032620863293740739496732466044546947952666250308674"
+        "72373502272570181905030453820398128968285453872513665526905113335684193781314404248190976e+301"},
+    {0x1.16fa9da90f9d8p+1003, chars_format::scientific, 301,
+        "9."
+        "3415114267945876208367248131098341912085530505203943017270044503863132197893962771450745275333290347854810"
+        "9960600140509742566153709652479468336022888542206366778998821244811822003682844389359377244112197477553800"
+        "16760116417262780962600310403215068957481809727018548258602677622354836648271052026150912e+301"},
+    {0x1.8a86318c46281p+1004, chars_format::scientific, 302,
+        "2."
+        "6421004320193599222220643359148420883281556097189074913758318124048616315511138834598140417187849490396791"
+        "2440800658786078681336731143970379155380439690121456355674188789241410064996533294508126717933561959185778"
+        "192754757376080092862115085847862393689963492786526884623762776875632820851286300067627008e+302"},
+    {0x1.ff462fd806bd7p+1005, chars_format::scientific, 302,
+        "6."
+        "8479333893788643349951954373428706271337676580677545656111124234548678899530140198122640316703808141324695"
+        "4111790004996031828015000205150715078148983240637243871500082888421342977620123039374551681737977878655788"
+        "295179567168650606205377274978890097754212420262333936960341237630114805596678852383342592e+302"},
+    {0x1.9abb3e1c6258dp+1006, chars_format::scientific, 303,
+        "1."
+        "1002556200184007023081438741792890947080762576000821563629014332834749679952244487757753483300298253507845"
+        "5879206419534204227221954043005542510983229083842379647414279802190829035747238306982534802408454663553709"
+        "1282385282353501007663737911321641626869306594390707034645320031413007213532753781288075264e+303"},
+    {0x1.de0bd3c1f52abp+1007, chars_format::scientific, 303,
+        "2."
+        "5611530892094994514501088831871358384319448903452892325625676707904740327849930775175514338249741969657883"
+        "8592308971003886423987684696984845619865591327523895036972469545643509680781096997879244741733146429164959"
+        "3820790500115221658520513179659203340914713114632244088248136782610390183342216645609259008e+303"},
+    {0x1.d9c1bbc9b76a1p+1008, chars_format::scientific, 303,
+        "5."
+        "0763445855374758137611513292718315449629948838655962307071284681337573494863787181114031880088015506956421"
+        "0919814812869947242304860161660008686121237187656925137779489232921913748608997417433611598970782898218677"
+        "0681263550628277966122021347502889218558140981978778760709565257654468755221733041969823744e+303"},
+    {0x1.838389973dca2p+1009, chars_format::scientific, 303,
+        "8."
+        "3044878325009487636657872605880027931451341062254646176493301760411427870881245765778811788634335139822887"
+        "7791768181558515981788246801785667173521110223595293418389986293158864840334067858751178794788759593463864"
+        "3446637560952598376682571125723765484978607914917947356221830413431528356893552064082214912e+303"},
+    {0x1.060853e168c00p+1010, chars_format::scientific, 304,
+        "1."
+        "1230804446665463017778789639347990996643965714634023343815009161240780246270947713147897725931947017335623"
+        "7630191092159383150643994991146787024266771551963955625126256769736294908917256990486304395382712939541329"
+        "44471985636790260821195763195960709126795406948190820263635402442656971341237103098326941696e+304"},
+    {0x1.f308c45ea73d7p+1011, chars_format::scientific, 304,
+        "4."
+        "2777559220816042653857310038704146366752118155285251665154411932831735245152145261165776711742388354156016"
+        "9871993219430699069531917092009858059914736544226777968630260462041311221406320891386198960782539433597799"
+        "67819804460846041770466218522657499957662378458077745646242495542457900501384540282123452416e+304"},
+    {0x1.6e7f0598d9a7ap+1012, chars_format::scientific, 304,
+        "6."
+        "2832609674393123217939414786004721368347810148169532603823847060388742916702683157570030369865385378061695"
+        "0423422570163256408545609818970072287306016643092924903391807737646611595942820189227413388395855318648545"
+        "96993614806461429966237140466546002145002610631737886461529165004165330118612673778600116224e+304"},
+    {0x1.90ee34c61a4e4p+1013, chars_format::scientific, 305,
+        "1."
+        "3747215164191864557360328902417183080909502773980053305016024875594667249734748345961089521445251491076760"
+        "1613710309461048505454382577543819736591536450997080647994948699299372710947086154466989750285286987223010"
+        "010358709717485396216234719231061846048602963736424188145247774330747094015196695990582116352e+305"},
+    {0x1.e2a0a3d09f949p+1014, chars_format::scientific, 305,
+        "3."
+        "3096929273918683614869679916049042345119516535338947195012264325212922683474532459406639062854253866258135"
+        "7719151111687362183898117765879272408632912053460554027589018196032181403643752217046446854545876459118270"
+        "311328170300273241053563917737426045554632200608705001740820709150305846610578306477689143296e+305"},
+    {0x1.c1f1e31fb56a1p+1015, chars_format::scientific, 305,
+        "6."
+        "1711334781978492823905176274313064600948013598950259705624044810976578137635336099364396791518714662842370"
+        "9280516241948225398658063408258944026475600604367395551060529895388440736389998513454247897588963927412199"
+        "886596463797584431228714343905526280539044788020033342657437500226579170692177128139530436608e+305"},
+    {0x1.c021a05af3889p+1016, chars_format::scientific, 306,
+        "1."
+        "2292521010494213202208392120910347371974932861996362652215354683626354286778450977056457988823406607851862"
+        "6637132565769582888977482809648230361989943269158655634268614343814815368836427061857244021348551127969781"
+        "1055580445126773330393578734970725834547100511308555559785816417647601996123490828625750523904e+306"},
+    {0x1.a0ba4fb02d02bp+1017, chars_format::scientific, 305,
+        "2."
+        "2862202954633178261723536509649685641707279850300290869803982420258862461647313576454922281065116456219182"
+        "9590977426811173756270658087196535714508685519454569812805651039956703238427854607968636622055258647292634"
+        "684121390540222150085347564627967335399432454801846311963425999483985877313898405284846501888e+306"},
+    {0x1.3f966b0ddcfd7p+1018, chars_format::scientific, 306,
+        "3."
+        "5065941308845354984753464542431391007674227604335612148522065748017825104538844307057550895580408416179424"
+        "7118416307944385786855208364451666760483209546178608196510513690039018180918045791524606584522427293544334"
+        "6243739881419482228334516326372503115386643937845878401903583322133727281304761523559911653376e+306"},
+    {0x1.f28cb9c6710a9p+1019, chars_format::scientific, 307,
+        "1."
+        "0940422247589227743316285257523446771149121608626559253104638931006152289125664762418837487890517285868544"
+        "1970842686935351143015218862511720392429343778632449186329279729720913087020406559756094832031600186601946"
+        "42090669215782471906632775672148557149263319590356475272060941885997193903260433671483161575424e+307"},
+    {0x1.c941430ebe2afp+1020, chars_format::scientific, 306,
+        "2."
+        "0068458193014485659233690965046541577150222922448876802079698749594927659484925364079051863693079922549962"
+        "3702340752679075101040300153750541846589137823389048924711303393882024589282733583930812172225616249563429"
+        "7868168967936674133963531031634950024920744675243356304584274649234115658663895314346773839872e+307"},
+    {0x1.3e04900b4e89ep+1021, chars_format::scientific, 307,
+        "2."
+        "7914963723745636433327098668092909811147302243780506069948228182283265947810001627803239111045172778906393"
+        "0987072447572980908861942482392189431390905934840154072184967491283583766051866632563025027572585713651756"
+        "30215388510334525743239925811352693280111872637884811742138711874263709333351600610928924557312e+307"},
+    {0x1.5cd1470a36d2ep+1022, chars_format::scientific, 307,
+        "6."
+        "1236992921041949817714041891928528839786938336942322084137095186042961819813936048028926723548660468971278"
+        "4969654586939917432251493887838173965737887781285740992515883352944011799461643423393002121460091055587179"
+        "85452576260185887979241983673503558946414035103004649802078842226017422195444929429676453003264e+307"},
+    {0x1.e4ed787bb244bp+1023, chars_format::scientific, 308,
+        "1."
+        "7026387749989901049352803345551957967504365590849171315485933257848664869760810216798351071186594668551262"
+        "9849272947937037080011581203332426168619415862460756069100292337181478478510557557506918137532825769631310"
+        "693972479511748662180221113394836543075210717029725044946195117678217681054268005181200990732288e+308"},
+};
+
+#endif // DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_3_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_4.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_4.hpp
new file mode 100644
index 0000000..41b16d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_scientific_precision_to_chars_test_cases_4.hpp
@@ -0,0 +1,10107 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_4_HPP
+#define DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_4_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoublePrecisionToCharsTestCase double_scientific_precision_to_chars_test_cases_4[] = {
+    // Test the maximum mantissa, which generates the most digits for each exponent.
+    {0x0.fffffffffffffp-1022, chars_format::scientific, 766,
+        "2."
+        "2250738585072008890245868760858598876504231122409594654935248025624400092282356951787758888037591552642309"
+        "7809504343120858773871583572918219930202943792242235598198275012420417889695713117910822610439719796040004"
+        "5489739193807919893608152561311337614984204327175103362739154978273159414382813627511383860409424946494228"
+        "6316695429105080201815926642134996606517803095075913058719846423906068637102005108723282784678843631944515"
+        "8661350412234790147923695852083215976210663754016137365830441936037147783553066828345356340050740730401356"
+        "0296804637591858316312422452159926254649430083685186171942241764645513713542013221703137049658321015465406"
+        "8035397417906022589503023501937519773030945763173210852507299305089761582519159720757232455434770912461317"
+        "493580281734466552734375e-308"},
+    {0x1.fffffffffffffp-1022, chars_format::scientific, 766,
+        "4."
+        "4501477170144022721148195934182639518696390927032912960468522194496444440421538910330590478162701758282983"
+        "1782607924221374017287738918929105531441481564124348675997628212653465850710457376274429802596224490290377"
+        "9698114444614570510266311510031828794952795966823603998647925096578034214163701381261333311989876551545144"
+        "0315261253813266652951306000184917766328660755595837392240989947807556594098101021612198814605258742579179"
+        "0000716759993441450860872056815779154359230189103349648694206140521828924314457976051636509036065141403772"
+        "1744226256159024466852576737244643007551333245007965068671949137768847800530996396770975896584413789443379"
+        "6621993967316936280457084866613206797017728916080020698679408551343728867675409720757232455434770912461317"
+        "493580281734466552734375e-308"},
+    {0x1.fffffffffffffp-1021, chars_format::scientific, 765,
+        "8."
+        "9002954340288045442296391868365279037392781854065825920937044388992888880843077820661180956325403516565966"
+        "3565215848442748034575477837858211062882963128248697351995256425306931701420914752548859605192448980580755"
+        "9396228889229141020532623020063657589905591933647207997295850193156068428327402762522666623979753103090288"
+        "0630522507626533305902612000369835532657321511191674784481979895615113188196202043224397629210517485158358"
+        "0001433519986882901721744113631558308718460378206699297388412281043657848628915952103273018072130282807544"
+        "3488452512318048933705153474489286015102666490015930137343898275537695601061992793541951793168827578886759"
+        "3243987934633872560914169733226413594035457832160041397358817102687457735350819441514464910869541824922634"
+        "98716056346893310546875e-308"},
+    {0x1.fffffffffffffp-1020, chars_format::scientific, 765,
+        "1."
+        "7800590868057609088459278373673055807478556370813165184187408877798577776168615564132236191265080703313193"
+        "2713043169688549606915095567571642212576592625649739470399051285061386340284182950509771921038489796116151"
+        "1879245777845828204106524604012731517981118386729441599459170038631213685665480552504533324795950620618057"
+        "6126104501525306661180522400073967106531464302238334956896395979123022637639240408644879525842103497031671"
+        "6000286703997376580344348822726311661743692075641339859477682456208731569725783190420654603614426056561508"
+        "8697690502463609786741030694897857203020533298003186027468779655107539120212398558708390358633765515777351"
+        "8648797586926774512182833946645282718807091566432008279471763420537491547070163888302892982173908364984526"
+        "99743211269378662109375e-307"},
+    {0x1.fffffffffffffp-1019, chars_format::scientific, 764,
+        "3."
+        "5601181736115218176918556747346111614957112741626330368374817755597155552337231128264472382530161406626386"
+        "5426086339377099213830191135143284425153185251299478940798102570122772680568365901019543842076979592232302"
+        "3758491555691656408213049208025463035962236773458883198918340077262427371330961105009066649591901241236115"
+        "2252209003050613322361044800147934213062928604476669913792791958246045275278480817289759051684206994063343"
+        "2000573407994753160688697645452623323487384151282679718955364912417463139451566380841309207228852113123017"
+        "7395381004927219573482061389795714406041066596006372054937559310215078240424797117416780717267531031554703"
+        "7297595173853549024365667893290565437614183132864016558943526841074983094140327776605785964347816729969053"
+        "9948642253875732421875e-307"},
+    {0x1.fffffffffffffp-1018, chars_format::scientific, 763,
+        "7."
+        "1202363472230436353837113494692223229914225483252660736749635511194311104674462256528944765060322813252773"
+        "0852172678754198427660382270286568850306370502598957881596205140245545361136731802039087684153959184464604"
+        "7516983111383312816426098416050926071924473546917766397836680154524854742661922210018133299183802482472230"
+        "4504418006101226644722089600295868426125857208953339827585583916492090550556961634579518103368413988126686"
+        "4001146815989506321377395290905246646974768302565359437910729824834926278903132761682618414457704226246035"
+        "4790762009854439146964122779591428812082133192012744109875118620430156480849594234833561434535062063109407"
+        "4595190347707098048731335786581130875228366265728033117887053682149966188280655553211571928695633459938107"
+        "989728450775146484375e-307"},
+    {0x1.fffffffffffffp-1017, chars_format::scientific, 763,
+        "1."
+        "4240472694446087270767422698938444645982845096650532147349927102238862220934892451305788953012064562650554"
+        "6170434535750839685532076454057313770061274100519791576319241028049109072227346360407817536830791836892920"
+        "9503396622276662563285219683210185214384894709383553279567336030904970948532384442003626659836760496494446"
+        "0900883601220245328944417920059173685225171441790667965517116783298418110111392326915903620673682797625337"
+        "2800229363197901264275479058181049329394953660513071887582145964966985255780626552336523682891540845249207"
+        "0958152401970887829392824555918285762416426638402548821975023724086031296169918846966712286907012412621881"
+        "4919038069541419609746267157316226175045673253145606623577410736429993237656131110642314385739126691987621"
+        "597945690155029296875e-306"},
+    {0x1.fffffffffffffp-1016, chars_format::scientific, 762,
+        "2."
+        "8480945388892174541534845397876889291965690193301064294699854204477724441869784902611577906024129125301109"
+        "2340869071501679371064152908114627540122548201039583152638482056098218144454692720815635073661583673785841"
+        "9006793244553325126570439366420370428769789418767106559134672061809941897064768884007253319673520992988892"
+        "1801767202440490657888835840118347370450342883581335931034233566596836220222784653831807241347365595250674"
+        "5600458726395802528550958116362098658789907321026143775164291929933970511561253104673047365783081690498414"
+        "1916304803941775658785649111836571524832853276805097643950047448172062592339837693933424573814024825243762"
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+    {0x1.fffffffffffffp+984, chars_format::scientific, 296,
+        "3."
+        "2699847631416845763765636317058007407116850577193871977018257312585276082250591345762506286112853226139206"
+        "3362135345349514539206010275270761608311119812273293154995511124583711071845919631103141138498373866484948"
+        "493204204902618490752153883171783214993043341026613640076426558481979190912625934336e+296"},
+    {0x1.fffffffffffffp+985, chars_format::scientific, 296,
+        "6."
+        "5399695262833691527531272634116014814233701154387743954036514625170552164501182691525012572225706452278412"
+        "6724270690699029078412020550541523216622239624546586309991022249167422143691839262206282276996747732969896"
+        "986408409805236981504307766343566429986086682053227280152853116963958381825251868672e+296"},
+    {0x1.fffffffffffffp+986, chars_format::scientific, 297,
+        "1."
+        "3079939052566738305506254526823202962846740230877548790807302925034110432900236538305002514445141290455682"
+        "5344854138139805815682404110108304643324447924909317261998204449833484428738367852441256455399349546593979"
+        "3972816819610473963008615532687132859972173364106454560305706233927916763650503737344e+297"},
+    {0x1.fffffffffffffp+987, chars_format::scientific, 297,
+        "2."
+        "6159878105133476611012509053646405925693480461755097581614605850068220865800473076610005028890282580911365"
+        "0689708276279611631364808220216609286648895849818634523996408899666968857476735704882512910798699093187958"
+        "7945633639220947926017231065374265719944346728212909120611412467855833527301007474688e+297"},
+    {0x1.fffffffffffffp+988, chars_format::scientific, 297,
+        "5."
+        "2319756210266953222025018107292811851386960923510195163229211700136441731600946153220010057780565161822730"
+        "1379416552559223262729616440433218573297791699637269047992817799333937714953471409765025821597398186375917"
+        "5891267278441895852034462130748531439888693456425818241222824935711667054602014949376e+297"},
+    {0x1.fffffffffffffp+989, chars_format::scientific, 298,
+        "1."
+        "0463951242053390644405003621458562370277392184702039032645842340027288346320189230644002011556113032364546"
+        "0275883310511844652545923288086643714659558339927453809598563559866787542990694281953005164319479637275183"
+        "51782534556883791704068924261497062879777386912851636482445649871423334109204029898752e+298"},
+    {0x1.fffffffffffffp+990, chars_format::scientific, 298,
+        "2."
+        "0927902484106781288810007242917124740554784369404078065291684680054576692640378461288004023112226064729092"
+        "0551766621023689305091846576173287429319116679854907619197127119733575085981388563906010328638959274550367"
+        "03565069113767583408137848522994125759554773825703272964891299742846668218408059797504e+298"},
+    {0x1.fffffffffffffp+991, chars_format::scientific, 298,
+        "4."
+        "1855804968213562577620014485834249481109568738808156130583369360109153385280756922576008046224452129458184"
+        "1103533242047378610183693152346574858638233359709815238394254239467150171962777127812020657277918549100734"
+        "07130138227535166816275697045988251519109547651406545929782599485693336436816119595008e+298"},
+    {0x1.fffffffffffffp+992, chars_format::scientific, 298,
+        "8."
+        "3711609936427125155240028971668498962219137477616312261166738720218306770561513845152016092448904258916368"
+        "2207066484094757220367386304693149717276466719419630476788508478934300343925554255624041314555837098201468"
+        "14260276455070333632551394091976503038219095302813091859565198971386672873632239190016e+298"},
+    {0x1.fffffffffffffp+993, chars_format::scientific, 299,
+        "1."
+        "6742321987285425031048005794333699792443827495523262452233347744043661354112302769030403218489780851783273"
+        "6441413296818951444073477260938629943455293343883926095357701695786860068785110851124808262911167419640293"
+        "628520552910140667265102788183953006076438190605626183719130397942773345747264478380032e+299"},
+    {0x1.fffffffffffffp+994, chars_format::scientific, 299,
+        "3."
+        "3484643974570850062096011588667399584887654991046524904466695488087322708224605538060806436979561703566547"
+        "2882826593637902888146954521877259886910586687767852190715403391573720137570221702249616525822334839280587"
+        "257041105820281334530205576367906012152876381211252367438260795885546691494528956760064e+299"},
+    {0x1.fffffffffffffp+995, chars_format::scientific, 299,
+        "6."
+        "6969287949141700124192023177334799169775309982093049808933390976174645416449211076121612873959123407133094"
+        "5765653187275805776293909043754519773821173375535704381430806783147440275140443404499233051644669678561174"
+        "514082211640562669060411152735812024305752762422504734876521591771093382989057913520128e+299"},
+    {0x1.fffffffffffffp+996, chars_format::scientific, 300,
+        "1."
+        "3393857589828340024838404635466959833955061996418609961786678195234929083289842215224322574791824681426618"
+        "9153130637455161155258781808750903954764234675107140876286161356629488055028088680899846610328933935712234"
+        "9028164423281125338120822305471624048611505524845009469753043183542186765978115827040256e+300"},
+    {0x1.fffffffffffffp+997, chars_format::scientific, 300,
+        "2."
+        "6787715179656680049676809270933919667910123992837219923573356390469858166579684430448645149583649362853237"
+        "8306261274910322310517563617501807909528469350214281752572322713258976110056177361799693220657867871424469"
+        "8056328846562250676241644610943248097223011049690018939506086367084373531956231654080512e+300"},
+    {0x1.fffffffffffffp+998, chars_format::scientific, 300,
+        "5."
+        "3575430359313360099353618541867839335820247985674439847146712780939716333159368860897290299167298725706475"
+        "6612522549820644621035127235003615819056938700428563505144645426517952220112354723599386441315735742848939"
+        "6112657693124501352483289221886496194446022099380037879012172734168747063912463308161024e+300"},
+    {0x1.fffffffffffffp+999, chars_format::scientific, 301,
+        "1."
+        "0715086071862672019870723708373567867164049597134887969429342556187943266631873772179458059833459745141295"
+        "1322504509964128924207025447000723163811387740085712701028929085303590444022470944719877288263147148569787"
+        "92225315386249002704966578443772992388892044198760075758024345468337494127824926616322048e+301"},
+    {0x1.fffffffffffffp+1000, chars_format::scientific, 301,
+        "2."
+        "1430172143725344039741447416747135734328099194269775938858685112375886533263747544358916119666919490282590"
+        "2645009019928257848414050894001446327622775480171425402057858170607180888044941889439754576526294297139575"
+        "84450630772498005409933156887545984777784088397520151516048690936674988255649853232644096e+301"},
+    {0x1.fffffffffffffp+1001, chars_format::scientific, 301,
+        "4."
+        "2860344287450688079482894833494271468656198388539551877717370224751773066527495088717832239333838980565180"
+        "5290018039856515696828101788002892655245550960342850804115716341214361776089883778879509153052588594279151"
+        "68901261544996010819866313775091969555568176795040303032097381873349976511299706465288192e+301"},
+    {0x1.fffffffffffffp+1002, chars_format::scientific, 301,
+        "8."
+        "5720688574901376158965789666988542937312396777079103755434740449503546133054990177435664478667677961130361"
+        "0580036079713031393656203576005785310491101920685701608231432682428723552179767557759018306105177188558303"
+        "37802523089992021639732627550183939111136353590080606064194763746699953022599412930576384e+301"},
+    {0x1.fffffffffffffp+1003, chars_format::scientific, 302,
+        "1."
+        "7144137714980275231793157933397708587462479355415820751086948089900709226610998035487132895733535592226072"
+        "2116007215942606278731240715201157062098220384137140321646286536485744710435953511551803661221035437711660"
+        "675605046179984043279465255100367878222272707180161212128389527493399906045198825861152768e+302"},
+    {0x1.fffffffffffffp+1004, chars_format::scientific, 302,
+        "3."
+        "4288275429960550463586315866795417174924958710831641502173896179801418453221996070974265791467071184452144"
+        "4232014431885212557462481430402314124196440768274280643292573072971489420871907023103607322442070875423321"
+        "351210092359968086558930510200735756444545414360322424256779054986799812090397651722305536e+302"},
+    {0x1.fffffffffffffp+1005, chars_format::scientific, 302,
+        "6."
+        "8576550859921100927172631733590834349849917421663283004347792359602836906443992141948531582934142368904288"
+        "8464028863770425114924962860804628248392881536548561286585146145942978841743814046207214644884141750846642"
+        "702420184719936173117861020401471512889090828720644848513558109973599624180795303444611072e+302"},
+    {0x1.fffffffffffffp+1006, chars_format::scientific, 303,
+        "1."
+        "3715310171984220185434526346718166869969983484332656600869558471920567381288798428389706316586828473780857"
+        "7692805772754085022984992572160925649678576307309712257317029229188595768348762809241442928976828350169328"
+        "5404840369439872346235722040802943025778181657441289697027116219947199248361590606889222144e+303"},
+    {0x1.fffffffffffffp+1007, chars_format::scientific, 303,
+        "2."
+        "7430620343968440370869052693436333739939966968665313201739116943841134762577596856779412633173656947561715"
+        "5385611545508170045969985144321851299357152614619424514634058458377191536697525618482885857953656700338657"
+        "0809680738879744692471444081605886051556363314882579394054232439894398496723181213778444288e+303"},
+    {0x1.fffffffffffffp+1008, chars_format::scientific, 303,
+        "5."
+        "4861240687936880741738105386872667479879933937330626403478233887682269525155193713558825266347313895123431"
+        "0771223091016340091939970288643702598714305229238849029268116916754383073395051236965771715907313400677314"
+        "1619361477759489384942888163211772103112726629765158788108464879788796993446362427556888576e+303"},
+    {0x1.fffffffffffffp+1009, chars_format::scientific, 304,
+        "1."
+        "0972248137587376148347621077374533495975986787466125280695646777536453905031038742711765053269462779024686"
+        "2154244618203268018387994057728740519742861045847769805853623383350876614679010247393154343181462680135462"
+        "83238722955518978769885776326423544206225453259530317576216929759577593986892724855113777152e+304"},
+    {0x1.fffffffffffffp+1010, chars_format::scientific, 304,
+        "2."
+        "1944496275174752296695242154749066991951973574932250561391293555072907810062077485423530106538925558049372"
+        "4308489236406536036775988115457481039485722091695539611707246766701753229358020494786308686362925360270925"
+        "66477445911037957539771552652847088412450906519060635152433859519155187973785449710227554304e+304"},
+    {0x1.fffffffffffffp+1011, chars_format::scientific, 304,
+        "4."
+        "3888992550349504593390484309498133983903947149864501122782587110145815620124154970847060213077851116098744"
+        "8616978472813072073551976230914962078971444183391079223414493533403506458716040989572617372725850720541851"
+        "32954891822075915079543105305694176824901813038121270304867719038310375947570899420455108608e+304"},
+    {0x1.fffffffffffffp+1012, chars_format::scientific, 304,
+        "8."
+        "7777985100699009186780968618996267967807894299729002245565174220291631240248309941694120426155702232197489"
+        "7233956945626144147103952461829924157942888366782158446828987066807012917432081979145234745451701441083702"
+        "65909783644151830159086210611388353649803626076242540609735438076620751895141798840910217216e+304"},
+    {0x1.fffffffffffffp+1013, chars_format::scientific, 305,
+        "1."
+        "7555597020139801837356193723799253593561578859945800449113034844058326248049661988338824085231140446439497"
+        "9446791389125228829420790492365984831588577673356431689365797413361402583486416395829046949090340288216740"
+        "531819567288303660318172421222776707299607252152485081219470876153241503790283597681820434432e+305"},
+    {0x1.fffffffffffffp+1014, chars_format::scientific, 305,
+        "3."
+        "5111194040279603674712387447598507187123157719891600898226069688116652496099323976677648170462280892878995"
+        "8893582778250457658841580984731969663177155346712863378731594826722805166972832791658093898180680576433481"
+        "063639134576607320636344842445553414599214504304970162438941752306483007580567195363640868864e+305"},
+    {0x1.fffffffffffffp+1015, chars_format::scientific, 305,
+        "7."
+        "0222388080559207349424774895197014374246315439783201796452139376233304992198647953355296340924561785757991"
+        "7787165556500915317683161969463939326354310693425726757463189653445610333945665583316187796361361152866962"
+        "127278269153214641272689684891106829198429008609940324877883504612966015161134390727281737728e+305"},
+    {0x1.fffffffffffffp+1016, chars_format::scientific, 306,
+        "1."
+        "4044477616111841469884954979039402874849263087956640359290427875246660998439729590671059268184912357151598"
+        "3557433111300183063536632393892787865270862138685145351492637930689122066789133116663237559272272230573392"
+        "4254556538306429282545379369782213658396858017219880649755767009225932030322268781454563475456e+306"},
+    {0x1.fffffffffffffp+1017, chars_format::scientific, 306,
+        "2."
+        "8088955232223682939769909958078805749698526175913280718580855750493321996879459181342118536369824714303196"
+        "7114866222600366127073264787785575730541724277370290702985275861378244133578266233326475118544544461146784"
+        "8509113076612858565090758739564427316793716034439761299511534018451864060644537562909126950912e+306"},
+    {0x1.fffffffffffffp+1018, chars_format::scientific, 306,
+        "5."
+        "6177910464447365879539819916157611499397052351826561437161711500986643993758918362684237072739649428606393"
+        "4229732445200732254146529575571151461083448554740581405970551722756488267156532466652950237089088922293569"
+        "7018226153225717130181517479128854633587432068879522599023068036903728121289075125818253901824e+306"},
+    {0x1.fffffffffffffp+1019, chars_format::scientific, 307,
+        "1."
+        "1235582092889473175907963983231522299879410470365312287432342300197328798751783672536847414547929885721278"
+        "6845946489040146450829305915114230292216689710948116281194110344551297653431306493330590047417817784458713"
+        "94036452306451434260363034958257709267174864137759045198046136073807456242578150251636507803648e+307"},
+    {0x1.fffffffffffffp+1020, chars_format::scientific, 307,
+        "2."
+        "2471164185778946351815927966463044599758820940730624574864684600394657597503567345073694829095859771442557"
+        "3691892978080292901658611830228460584433379421896232562388220689102595306862612986661180094835635568917427"
+        "88072904612902868520726069916515418534349728275518090396092272147614912485156300503273015607296e+307"},
+    {0x1.fffffffffffffp+1021, chars_format::scientific, 307,
+        "4."
+        "4942328371557892703631855932926089199517641881461249149729369200789315195007134690147389658191719542885114"
+        "7383785956160585803317223660456921168866758843792465124776441378205190613725225973322360189671271137834855"
+        "76145809225805737041452139833030837068699456551036180792184544295229824970312601006546031214592e+307"},
+    {0x1.fffffffffffffp+1022, chars_format::scientific, 307,
+        "8."
+        "9884656743115785407263711865852178399035283762922498299458738401578630390014269380294779316383439085770229"
+        "4767571912321171606634447320913842337733517687584930249552882756410381227450451946644720379342542275669711"
+        "52291618451611474082904279666061674137398913102072361584369088590459649940625202013092062429184e+307"},
+    {0x1.fffffffffffffp+1023, chars_format::scientific, 308,
+        "1."
+        "7976931348623157081452742373170435679807056752584499659891747680315726078002853876058955863276687817154045"
+        "8953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942"
+        "304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368e+308"},
+};
+
+#endif // DOUBLE_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_4_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_to_chars_test_cases.hpp
new file mode 100644
index 0000000..35abc20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/double_to_chars_test_cases.hpp
@@ -0,0 +1,2916 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef DOUBLE_TO_CHARS_TEST_CASES_HPP
+#define DOUBLE_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr DoubleToCharsTestCase double_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0, chars_format::scientific, "0e+00"},
+    {-0.0, chars_format::scientific, "-0e+00"},
+    {double_inf, chars_format::scientific, "inf"},
+    {-double_inf, chars_format::scientific, "-inf"},
+    {double_nan, chars_format::scientific, "nan"},
+    {-double_nan, chars_format::scientific, "-nan(ind)"},
+    {double_nan_payload, chars_format::scientific, "nan"},
+    {-double_nan_payload, chars_format::scientific, "-nan"},
+    {2.018, chars_format::scientific, "2.018e+00"},
+    {-2.018, chars_format::scientific, "-2.018e+00"},
+
+    // Ditto for fixed, which doesn't emit exponents.
+    {0.0, chars_format::fixed, "0"},
+    {-0.0, chars_format::fixed, "-0"},
+    {double_inf, chars_format::fixed, "inf"},
+    {-double_inf, chars_format::fixed, "-inf"},
+    {double_nan, chars_format::fixed, "nan"},
+    {-double_nan, chars_format::fixed, "-nan(ind)"},
+    {double_nan_payload, chars_format::fixed, "nan"},
+    {-double_nan_payload, chars_format::fixed, "-nan"},
+    {2.018, chars_format::fixed, "2.018"},
+    {-2.018, chars_format::fixed, "-2.018"},
+
+    // Ditto for general, which selects fixed for the scientific exponent 0.
+    {0.0, chars_format::general, "0"},
+    {-0.0, chars_format::general, "-0"},
+    {double_inf, chars_format::general, "inf"},
+    {-double_inf, chars_format::general, "-inf"},
+    {double_nan, chars_format::general, "nan"},
+    {-double_nan, chars_format::general, "-nan(ind)"},
+    {double_nan_payload, chars_format::general, "nan"},
+    {-double_nan_payload, chars_format::general, "-nan"},
+    {2.018, chars_format::general, "2.018"},
+    {-2.018, chars_format::general, "-2.018"},
+
+    // Ditto for plain, which selects fixed because it's shorter for these values.
+    {0.0, chars_format{}, "0"},
+    {-0.0, chars_format{}, "-0"},
+    {double_inf, chars_format{}, "inf"},
+    {-double_inf, chars_format{}, "-inf"},
+    {double_nan, chars_format{}, "nan"},
+    {-double_nan, chars_format{}, "-nan(ind)"},
+    {double_nan_payload, chars_format{}, "nan"},
+    {-double_nan_payload, chars_format{}, "-nan"},
+    {2.018, chars_format{}, "2.018"},
+    {-2.018, chars_format{}, "-2.018"},
+
+    // Ditto for hex.
+    {0.0, chars_format::hex, "0p+0"},
+    {-0.0, chars_format::hex, "-0p+0"},
+    {double_inf, chars_format::hex, "inf"},
+    {-double_inf, chars_format::hex, "-inf"},
+    {double_nan, chars_format::hex, "nan"},
+    {-double_nan, chars_format::hex, "-nan(ind)"},
+    {double_nan_payload, chars_format::hex, "nan"},
+    {-double_nan_payload, chars_format::hex, "-nan"},
+    {0x1.729p+0, chars_format::hex, "1.729p+0"},
+    {-0x1.729p+0, chars_format::hex, "-1.729p+0"},
+
+    // Ryu d2s_test.cc SwitchToSubnormal
+    {2.2250738585072014e-308, chars_format::scientific, "2.2250738585072014e-308"},
+
+    // Ryu d2s_test.cc MinAndMax
+    {0x1.fffffffffffffp+1023, chars_format::scientific, "1.7976931348623157e+308"},
+    {0x0.0000000000001p-1022, chars_format::scientific, "5e-324"},
+
+    // Ryu d2s_test.cc LotsOfTrailingZeros
+    {2.98023223876953125e-8, chars_format::scientific, "2.9802322387695312e-08"},
+
+    // Ryu d2s_test.cc Regression
+    {-2.109808898695963e16, chars_format::scientific, "-2.109808898695963e+16"},
+    {4.940656e-318, chars_format::scientific, "4.940656e-318"},
+    {1.18575755e-316, chars_format::scientific, "1.18575755e-316"},
+    {2.989102097996e-312, chars_format::scientific, "2.989102097996e-312"},
+    {9.0608011534336e15, chars_format::scientific, "9.0608011534336e+15"},
+    {4.708356024711512e18, chars_format::scientific, "4.708356024711512e+18"},
+    {9.409340012568248e18, chars_format::scientific, "9.409340012568248e+18"},
+
+    // Ryu d2s_test.cc LooksLikePow5
+    {0x1.0f0cf064dd592p+132, chars_format::scientific, "5.764607523034235e+39"},
+    {0x1.0f0cf064dd592p+133, chars_format::scientific, "1.152921504606847e+40"},
+    {0x1.0f0cf064dd592p+134, chars_format::scientific, "2.305843009213694e+40"},
+
+    // Ryu d2s_test.cc OutputLength
+    {1.0, chars_format::scientific, "1e+00"},
+    {1.2, chars_format::scientific, "1.2e+00"},
+    {1.23, chars_format::scientific, "1.23e+00"},
+    {1.234, chars_format::scientific, "1.234e+00"},
+    {1.2345, chars_format::scientific, "1.2345e+00"},
+    {1.23456, chars_format::scientific, "1.23456e+00"},
+    {1.234567, chars_format::scientific, "1.234567e+00"},
+    {1.2345678, chars_format::scientific, "1.2345678e+00"},
+    {1.23456789, chars_format::scientific, "1.23456789e+00"},
+    {1.234567895, chars_format::scientific, "1.234567895e+00"},
+    {1.2345678901, chars_format::scientific, "1.2345678901e+00"},
+    {1.23456789012, chars_format::scientific, "1.23456789012e+00"},
+    {1.234567890123, chars_format::scientific, "1.234567890123e+00"},
+    {1.2345678901234, chars_format::scientific, "1.2345678901234e+00"},
+    {1.23456789012345, chars_format::scientific, "1.23456789012345e+00"},
+    {1.234567890123456, chars_format::scientific, "1.234567890123456e+00"},
+    {1.2345678901234567, chars_format::scientific, "1.2345678901234567e+00"},
+
+    // Ryu d2s_test.cc 32-bit Chunking
+    {4.294967294, chars_format::scientific, "4.294967294e+00"},
+    {4.294967295, chars_format::scientific, "4.294967295e+00"},
+    {4.294967296, chars_format::scientific, "4.294967296e+00"},
+    {4.294967297, chars_format::scientific, "4.294967297e+00"},
+    {4.294967298, chars_format::scientific, "4.294967298e+00"},
+
+    // Ryu d2s_test.cc MinMaxShift
+    {0x1.0000000000000p-1019, chars_format::scientific, "1.7800590868057611e-307"},
+    {0x1.fffffffffffffp-1016, chars_format::scientific, "2.8480945388892175e-306"},
+    {0x1.0000000000000p-982, chars_format::scientific, "2.446494580089078e-296"},
+    {0x1.fffffffffffffp-982, chars_format::scientific, "4.8929891601781557e-296"},
+    {0x1.0000000000000p+54, chars_format::scientific, "1.8014398509481984e+16"},
+    {0x1.fffffffffffffp+54, chars_format::scientific, "3.6028797018963964e+16"},
+    {0x1.0000000000000p-716, chars_format::scientific, "2.900835519859558e-216"},
+    {0x1.fffffffffffffp-716, chars_format::scientific, "5.801671039719115e-216"},
+    {0x1.fa7161a4d6e0cp-89, chars_format::scientific, "3.196104012172126e-27"},
+
+    // Ryu d2s_test.cc SmallIntegers
+    {9007199254740991.0, chars_format::scientific, "9.007199254740991e+15"},
+    {9007199254740992.0, chars_format::scientific, "9.007199254740992e+15"},
+
+    {1.0, chars_format::scientific, "1e+00"},
+    {12.0, chars_format::scientific, "1.2e+01"},
+    {123.0, chars_format::scientific, "1.23e+02"},
+    {1234.0, chars_format::scientific, "1.234e+03"},
+    {12345.0, chars_format::scientific, "1.2345e+04"},
+    {123456.0, chars_format::scientific, "1.23456e+05"},
+    {1234567.0, chars_format::scientific, "1.234567e+06"},
+    {12345678.0, chars_format::scientific, "1.2345678e+07"},
+    {123456789.0, chars_format::scientific, "1.23456789e+08"},
+    {1234567890.0, chars_format::scientific, "1.23456789e+09"},
+    {1234567895.0, chars_format::scientific, "1.234567895e+09"},
+    {12345678901.0, chars_format::scientific, "1.2345678901e+10"},
+    {123456789012.0, chars_format::scientific, "1.23456789012e+11"},
+    {1234567890123.0, chars_format::scientific, "1.234567890123e+12"},
+    {12345678901234.0, chars_format::scientific, "1.2345678901234e+13"},
+    {123456789012345.0, chars_format::scientific, "1.23456789012345e+14"},
+    {1234567890123456.0, chars_format::scientific, "1.234567890123456e+15"},
+
+    {1.0, chars_format::scientific, "1e+00"},
+    {10.0, chars_format::scientific, "1e+01"},
+    {100.0, chars_format::scientific, "1e+02"},
+    {1000.0, chars_format::scientific, "1e+03"},
+    {10000.0, chars_format::scientific, "1e+04"},
+    {100000.0, chars_format::scientific, "1e+05"},
+    {1000000.0, chars_format::scientific, "1e+06"},
+    {10000000.0, chars_format::scientific, "1e+07"},
+    {100000000.0, chars_format::scientific, "1e+08"},
+    {1000000000.0, chars_format::scientific, "1e+09"},
+    {10000000000.0, chars_format::scientific, "1e+10"},
+    {100000000000.0, chars_format::scientific, "1e+11"},
+    {1000000000000.0, chars_format::scientific, "1e+12"},
+    {10000000000000.0, chars_format::scientific, "1e+13"},
+    {100000000000000.0, chars_format::scientific, "1e+14"},
+    {1000000000000000.0, chars_format::scientific, "1e+15"},
+
+    {1000000000000001.0, chars_format::scientific, "1.000000000000001e+15"},
+    {1000000000000010.0, chars_format::scientific, "1.00000000000001e+15"},
+    {1000000000000100.0, chars_format::scientific, "1.0000000000001e+15"},
+    {1000000000001000.0, chars_format::scientific, "1.000000000001e+15"},
+    {1000000000010000.0, chars_format::scientific, "1.00000000001e+15"},
+    {1000000000100000.0, chars_format::scientific, "1.0000000001e+15"},
+    {1000000001000000.0, chars_format::scientific, "1.000000001e+15"},
+    {1000000010000000.0, chars_format::scientific, "1.00000001e+15"},
+    {1000000100000000.0, chars_format::scientific, "1.0000001e+15"},
+    {1000001000000000.0, chars_format::scientific, "1.000001e+15"},
+    {1000010000000000.0, chars_format::scientific, "1.00001e+15"},
+    {1000100000000000.0, chars_format::scientific, "1.0001e+15"},
+    {1001000000000000.0, chars_format::scientific, "1.001e+15"},
+    {1010000000000000.0, chars_format::scientific, "1.01e+15"},
+    {1100000000000000.0, chars_format::scientific, "1.1e+15"},
+
+    {8.0, chars_format::scientific, "8e+00"},
+    {64.0, chars_format::scientific, "6.4e+01"},
+    {512.0, chars_format::scientific, "5.12e+02"},
+    {8192.0, chars_format::scientific, "8.192e+03"},
+    {65536.0, chars_format::scientific, "6.5536e+04"},
+    {524288.0, chars_format::scientific, "5.24288e+05"},
+    {8388608.0, chars_format::scientific, "8.388608e+06"},
+    {67108864.0, chars_format::scientific, "6.7108864e+07"},
+    {536870912.0, chars_format::scientific, "5.36870912e+08"},
+    {8589934592.0, chars_format::scientific, "8.589934592e+09"},
+    {68719476736.0, chars_format::scientific, "6.8719476736e+10"},
+    {549755813888.0, chars_format::scientific, "5.49755813888e+11"},
+    {8796093022208.0, chars_format::scientific, "8.796093022208e+12"},
+    {70368744177664.0, chars_format::scientific, "7.0368744177664e+13"},
+    {562949953421312.0, chars_format::scientific, "5.62949953421312e+14"},
+    {9007199254740992.0, chars_format::scientific, "9.007199254740992e+15"},
+
+    {8000.0, chars_format::scientific, "8e+03"},
+    {64000.0, chars_format::scientific, "6.4e+04"},
+    {512000.0, chars_format::scientific, "5.12e+05"},
+    {8192000.0, chars_format::scientific, "8.192e+06"},
+    {65536000.0, chars_format::scientific, "6.5536e+07"},
+    {524288000.0, chars_format::scientific, "5.24288e+08"},
+    {8388608000.0, chars_format::scientific, "8.388608e+09"},
+    {67108864000.0, chars_format::scientific, "6.7108864e+10"},
+    {536870912000.0, chars_format::scientific, "5.36870912e+11"},
+    {8589934592000.0, chars_format::scientific, "8.589934592e+12"},
+    {68719476736000.0, chars_format::scientific, "6.8719476736e+13"},
+    {549755813888000.0, chars_format::scientific, "5.49755813888e+14"},
+    {8796093022208000.0, chars_format::scientific, "8.796093022208e+15"},
+
+    // Test all exponents.
+    {7.29e-324, chars_format::scientific, "5e-324"}, // 1.729e-324 would be too small
+    {1.729e-323, chars_format::scientific, "1.5e-323"},
+    {1.729e-322, chars_format::scientific, "1.73e-322"},
+    {1.729e-321, chars_format::scientific, "1.73e-321"},
+    {1.729e-320, chars_format::scientific, "1.729e-320"},
+    {1.729e-319, chars_format::scientific, "1.729e-319"},
+    {1.729e-318, chars_format::scientific, "1.729e-318"},
+    {1.729e-317, chars_format::scientific, "1.729e-317"},
+    {1.729e-316, chars_format::scientific, "1.729e-316"},
+    {1.729e-315, chars_format::scientific, "1.729e-315"},
+    {1.729e-314, chars_format::scientific, "1.729e-314"},
+    {1.729e-313, chars_format::scientific, "1.729e-313"},
+    {1.729e-312, chars_format::scientific, "1.729e-312"},
+    {1.729e-311, chars_format::scientific, "1.729e-311"},
+    {1.729e-310, chars_format::scientific, "1.729e-310"},
+    {1.729e-309, chars_format::scientific, "1.729e-309"},
+    {1.729e-308, chars_format::scientific, "1.729e-308"},
+    {1.729e-307, chars_format::scientific, "1.729e-307"},
+    {1.729e-306, chars_format::scientific, "1.729e-306"},
+    {1.729e-305, chars_format::scientific, "1.729e-305"},
+    {1.729e-304, chars_format::scientific, "1.729e-304"},
+    {1.729e-303, chars_format::scientific, "1.729e-303"},
+    {1.729e-302, chars_format::scientific, "1.729e-302"},
+    {1.729e-301, chars_format::scientific, "1.729e-301"},
+    {1.729e-300, chars_format::scientific, "1.729e-300"},
+    {1.729e-299, chars_format::scientific, "1.729e-299"},
+    {1.729e-298, chars_format::scientific, "1.729e-298"},
+    {1.729e-297, chars_format::scientific, "1.729e-297"},
+    {1.729e-296, chars_format::scientific, "1.729e-296"},
+    {1.729e-295, chars_format::scientific, "1.729e-295"},
+    {1.729e-294, chars_format::scientific, "1.729e-294"},
+    {1.729e-293, chars_format::scientific, "1.729e-293"},
+    {1.729e-292, chars_format::scientific, "1.729e-292"},
+    {1.729e-291, chars_format::scientific, "1.729e-291"},
+    {1.729e-290, chars_format::scientific, "1.729e-290"},
+    {1.729e-289, chars_format::scientific, "1.729e-289"},
+    {1.729e-288, chars_format::scientific, "1.729e-288"},
+    {1.729e-287, chars_format::scientific, "1.729e-287"},
+    {1.729e-286, chars_format::scientific, "1.729e-286"},
+    {1.729e-285, chars_format::scientific, "1.729e-285"},
+    {1.729e-284, chars_format::scientific, "1.729e-284"},
+    {1.729e-283, chars_format::scientific, "1.729e-283"},
+    {1.729e-282, chars_format::scientific, "1.729e-282"},
+    {1.729e-281, chars_format::scientific, "1.729e-281"},
+    {1.729e-280, chars_format::scientific, "1.729e-280"},
+    {1.729e-279, chars_format::scientific, "1.729e-279"},
+    {1.729e-278, chars_format::scientific, "1.729e-278"},
+    {1.729e-277, chars_format::scientific, "1.729e-277"},
+    {1.729e-276, chars_format::scientific, "1.729e-276"},
+    {1.729e-275, chars_format::scientific, "1.729e-275"},
+    {1.729e-274, chars_format::scientific, "1.729e-274"},
+    {1.729e-273, chars_format::scientific, "1.729e-273"},
+    {1.729e-272, chars_format::scientific, "1.729e-272"},
+    {1.729e-271, chars_format::scientific, "1.729e-271"},
+    {1.729e-270, chars_format::scientific, "1.729e-270"},
+    {1.729e-269, chars_format::scientific, "1.729e-269"},
+    {1.729e-268, chars_format::scientific, "1.729e-268"},
+    {1.729e-267, chars_format::scientific, "1.729e-267"},
+    {1.729e-266, chars_format::scientific, "1.729e-266"},
+    {1.729e-265, chars_format::scientific, "1.729e-265"},
+    {1.729e-264, chars_format::scientific, "1.729e-264"},
+    {1.729e-263, chars_format::scientific, "1.729e-263"},
+    {1.729e-262, chars_format::scientific, "1.729e-262"},
+    {1.729e-261, chars_format::scientific, "1.729e-261"},
+    {1.729e-260, chars_format::scientific, "1.729e-260"},
+    {1.729e-259, chars_format::scientific, "1.729e-259"},
+    {1.729e-258, chars_format::scientific, "1.729e-258"},
+    {1.729e-257, chars_format::scientific, "1.729e-257"},
+    {1.729e-256, chars_format::scientific, "1.729e-256"},
+    {1.729e-255, chars_format::scientific, "1.729e-255"},
+    {1.729e-254, chars_format::scientific, "1.729e-254"},
+    {1.729e-253, chars_format::scientific, "1.729e-253"},
+    {1.729e-252, chars_format::scientific, "1.729e-252"},
+    {1.729e-251, chars_format::scientific, "1.729e-251"},
+    {1.729e-250, chars_format::scientific, "1.729e-250"},
+    {1.729e-249, chars_format::scientific, "1.729e-249"},
+    {1.729e-248, chars_format::scientific, "1.729e-248"},
+    {1.729e-247, chars_format::scientific, "1.729e-247"},
+    {1.729e-246, chars_format::scientific, "1.729e-246"},
+    {1.729e-245, chars_format::scientific, "1.729e-245"},
+    {1.729e-244, chars_format::scientific, "1.729e-244"},
+    {1.729e-243, chars_format::scientific, "1.729e-243"},
+    {1.729e-242, chars_format::scientific, "1.729e-242"},
+    {1.729e-241, chars_format::scientific, "1.729e-241"},
+    {1.729e-240, chars_format::scientific, "1.729e-240"},
+    {1.729e-239, chars_format::scientific, "1.729e-239"},
+    {1.729e-238, chars_format::scientific, "1.729e-238"},
+    {1.729e-237, chars_format::scientific, "1.729e-237"},
+    {1.729e-236, chars_format::scientific, "1.729e-236"},
+    {1.729e-235, chars_format::scientific, "1.729e-235"},
+    {1.729e-234, chars_format::scientific, "1.729e-234"},
+    {1.729e-233, chars_format::scientific, "1.729e-233"},
+    {1.729e-232, chars_format::scientific, "1.729e-232"},
+    {1.729e-231, chars_format::scientific, "1.729e-231"},
+    {1.729e-230, chars_format::scientific, "1.729e-230"},
+    {1.729e-229, chars_format::scientific, "1.729e-229"},
+    {1.729e-228, chars_format::scientific, "1.729e-228"},
+    {1.729e-227, chars_format::scientific, "1.729e-227"},
+    {1.729e-226, chars_format::scientific, "1.729e-226"},
+    {1.729e-225, chars_format::scientific, "1.729e-225"},
+    {1.729e-224, chars_format::scientific, "1.729e-224"},
+    {1.729e-223, chars_format::scientific, "1.729e-223"},
+    {1.729e-222, chars_format::scientific, "1.729e-222"},
+    {1.729e-221, chars_format::scientific, "1.729e-221"},
+    {1.729e-220, chars_format::scientific, "1.729e-220"},
+    {1.729e-219, chars_format::scientific, "1.729e-219"},
+    {1.729e-218, chars_format::scientific, "1.729e-218"},
+    {1.729e-217, chars_format::scientific, "1.729e-217"},
+    {1.729e-216, chars_format::scientific, "1.729e-216"},
+    {1.729e-215, chars_format::scientific, "1.729e-215"},
+    {1.729e-214, chars_format::scientific, "1.729e-214"},
+    {1.729e-213, chars_format::scientific, "1.729e-213"},
+    {1.729e-212, chars_format::scientific, "1.729e-212"},
+    {1.729e-211, chars_format::scientific, "1.729e-211"},
+    {1.729e-210, chars_format::scientific, "1.729e-210"},
+    {1.729e-209, chars_format::scientific, "1.729e-209"},
+    {1.729e-208, chars_format::scientific, "1.729e-208"},
+    {1.729e-207, chars_format::scientific, "1.729e-207"},
+    {1.729e-206, chars_format::scientific, "1.729e-206"},
+    {1.729e-205, chars_format::scientific, "1.729e-205"},
+    {1.729e-204, chars_format::scientific, "1.729e-204"},
+    {1.729e-203, chars_format::scientific, "1.729e-203"},
+    {1.729e-202, chars_format::scientific, "1.729e-202"},
+    {1.729e-201, chars_format::scientific, "1.729e-201"},
+    {1.729e-200, chars_format::scientific, "1.729e-200"},
+    {1.729e-199, chars_format::scientific, "1.729e-199"},
+    {1.729e-198, chars_format::scientific, "1.729e-198"},
+    {1.729e-197, chars_format::scientific, "1.729e-197"},
+    {1.729e-196, chars_format::scientific, "1.729e-196"},
+    {1.729e-195, chars_format::scientific, "1.729e-195"},
+    {1.729e-194, chars_format::scientific, "1.729e-194"},
+    {1.729e-193, chars_format::scientific, "1.729e-193"},
+    {1.729e-192, chars_format::scientific, "1.729e-192"},
+    {1.729e-191, chars_format::scientific, "1.729e-191"},
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+    {1.729e127, chars_format::scientific, "1.729e+127"},
+    {1.729e128, chars_format::scientific, "1.729e+128"},
+    {1.729e129, chars_format::scientific, "1.729e+129"},
+    {1.729e130, chars_format::scientific, "1.729e+130"},
+    {1.729e131, chars_format::scientific, "1.729e+131"},
+    {1.729e132, chars_format::scientific, "1.729e+132"},
+    {1.729e133, chars_format::scientific, "1.729e+133"},
+    {1.729e134, chars_format::scientific, "1.729e+134"},
+    {1.729e135, chars_format::scientific, "1.729e+135"},
+    {1.729e136, chars_format::scientific, "1.729e+136"},
+    {1.729e137, chars_format::scientific, "1.729e+137"},
+    {1.729e138, chars_format::scientific, "1.729e+138"},
+    {1.729e139, chars_format::scientific, "1.729e+139"},
+    {1.729e140, chars_format::scientific, "1.729e+140"},
+    {1.729e141, chars_format::scientific, "1.729e+141"},
+    {1.729e142, chars_format::scientific, "1.729e+142"},
+    {1.729e143, chars_format::scientific, "1.729e+143"},
+    {1.729e144, chars_format::scientific, "1.729e+144"},
+    {1.729e145, chars_format::scientific, "1.729e+145"},
+    {1.729e146, chars_format::scientific, "1.729e+146"},
+    {1.729e147, chars_format::scientific, "1.729e+147"},
+    {1.729e148, chars_format::scientific, "1.729e+148"},
+    {1.729e149, chars_format::scientific, "1.729e+149"},
+    {1.729e150, chars_format::scientific, "1.729e+150"},
+    {1.729e151, chars_format::scientific, "1.729e+151"},
+    {1.729e152, chars_format::scientific, "1.729e+152"},
+    {1.729e153, chars_format::scientific, "1.729e+153"},
+    {1.729e154, chars_format::scientific, "1.729e+154"},
+    {1.729e155, chars_format::scientific, "1.729e+155"},
+    {1.729e156, chars_format::scientific, "1.729e+156"},
+    {1.729e157, chars_format::scientific, "1.729e+157"},
+    {1.729e158, chars_format::scientific, "1.729e+158"},
+    {1.729e159, chars_format::scientific, "1.729e+159"},
+    {1.729e160, chars_format::scientific, "1.729e+160"},
+    {1.729e161, chars_format::scientific, "1.729e+161"},
+    {1.729e162, chars_format::scientific, "1.729e+162"},
+    {1.729e163, chars_format::scientific, "1.729e+163"},
+    {1.729e164, chars_format::scientific, "1.729e+164"},
+    {1.729e165, chars_format::scientific, "1.729e+165"},
+    {1.729e166, chars_format::scientific, "1.729e+166"},
+    {1.729e167, chars_format::scientific, "1.729e+167"},
+    {1.729e168, chars_format::scientific, "1.729e+168"},
+    {1.729e169, chars_format::scientific, "1.729e+169"},
+    {1.729e170, chars_format::scientific, "1.729e+170"},
+    {1.729e171, chars_format::scientific, "1.729e+171"},
+    {1.729e172, chars_format::scientific, "1.729e+172"},
+    {1.729e173, chars_format::scientific, "1.729e+173"},
+    {1.729e174, chars_format::scientific, "1.729e+174"},
+    {1.729e175, chars_format::scientific, "1.729e+175"},
+    {1.729e176, chars_format::scientific, "1.729e+176"},
+    {1.729e177, chars_format::scientific, "1.729e+177"},
+    {1.729e178, chars_format::scientific, "1.729e+178"},
+    {1.729e179, chars_format::scientific, "1.729e+179"},
+    {1.729e180, chars_format::scientific, "1.729e+180"},
+    {1.729e181, chars_format::scientific, "1.729e+181"},
+    {1.729e182, chars_format::scientific, "1.729e+182"},
+    {1.729e183, chars_format::scientific, "1.729e+183"},
+    {1.729e184, chars_format::scientific, "1.729e+184"},
+    {1.729e185, chars_format::scientific, "1.729e+185"},
+    {1.729e186, chars_format::scientific, "1.729e+186"},
+    {1.729e187, chars_format::scientific, "1.729e+187"},
+    {1.729e188, chars_format::scientific, "1.729e+188"},
+    {1.729e189, chars_format::scientific, "1.729e+189"},
+    {1.729e190, chars_format::scientific, "1.729e+190"},
+    {1.729e191, chars_format::scientific, "1.729e+191"},
+    {1.729e192, chars_format::scientific, "1.729e+192"},
+    {1.729e193, chars_format::scientific, "1.729e+193"},
+    {1.729e194, chars_format::scientific, "1.729e+194"},
+    {1.729e195, chars_format::scientific, "1.729e+195"},
+    {1.729e196, chars_format::scientific, "1.729e+196"},
+    {1.729e197, chars_format::scientific, "1.729e+197"},
+    {1.729e198, chars_format::scientific, "1.729e+198"},
+    {1.729e199, chars_format::scientific, "1.729e+199"},
+    {1.729e200, chars_format::scientific, "1.729e+200"},
+    {1.729e201, chars_format::scientific, "1.729e+201"},
+    {1.729e202, chars_format::scientific, "1.729e+202"},
+    {1.729e203, chars_format::scientific, "1.729e+203"},
+    {1.729e204, chars_format::scientific, "1.729e+204"},
+    {1.729e205, chars_format::scientific, "1.729e+205"},
+    {1.729e206, chars_format::scientific, "1.729e+206"},
+    {1.729e207, chars_format::scientific, "1.729e+207"},
+    {1.729e208, chars_format::scientific, "1.729e+208"},
+    {1.729e209, chars_format::scientific, "1.729e+209"},
+    {1.729e210, chars_format::scientific, "1.729e+210"},
+    {1.729e211, chars_format::scientific, "1.729e+211"},
+    {1.729e212, chars_format::scientific, "1.729e+212"},
+    {1.729e213, chars_format::scientific, "1.729e+213"},
+    {1.729e214, chars_format::scientific, "1.729e+214"},
+    {1.729e215, chars_format::scientific, "1.729e+215"},
+    {1.729e216, chars_format::scientific, "1.729e+216"},
+    {1.729e217, chars_format::scientific, "1.729e+217"},
+    {1.729e218, chars_format::scientific, "1.729e+218"},
+    {1.729e219, chars_format::scientific, "1.729e+219"},
+    {1.729e220, chars_format::scientific, "1.729e+220"},
+    {1.729e221, chars_format::scientific, "1.729e+221"},
+    {1.729e222, chars_format::scientific, "1.729e+222"},
+    {1.729e223, chars_format::scientific, "1.729e+223"},
+    {1.729e224, chars_format::scientific, "1.729e+224"},
+    {1.729e225, chars_format::scientific, "1.729e+225"},
+    {1.729e226, chars_format::scientific, "1.729e+226"},
+    {1.729e227, chars_format::scientific, "1.729e+227"},
+    {1.729e228, chars_format::scientific, "1.729e+228"},
+    {1.729e229, chars_format::scientific, "1.729e+229"},
+    {1.729e230, chars_format::scientific, "1.729e+230"},
+    {1.729e231, chars_format::scientific, "1.729e+231"},
+    {1.729e232, chars_format::scientific, "1.729e+232"},
+    {1.729e233, chars_format::scientific, "1.729e+233"},
+    {1.729e234, chars_format::scientific, "1.729e+234"},
+    {1.729e235, chars_format::scientific, "1.729e+235"},
+    {1.729e236, chars_format::scientific, "1.729e+236"},
+    {1.729e237, chars_format::scientific, "1.729e+237"},
+    {1.729e238, chars_format::scientific, "1.729e+238"},
+    {1.729e239, chars_format::scientific, "1.729e+239"},
+    {1.729e240, chars_format::scientific, "1.729e+240"},
+    {1.729e241, chars_format::scientific, "1.729e+241"},
+    {1.729e242, chars_format::scientific, "1.729e+242"},
+    {1.729e243, chars_format::scientific, "1.729e+243"},
+    {1.729e244, chars_format::scientific, "1.729e+244"},
+    {1.729e245, chars_format::scientific, "1.729e+245"},
+    {1.729e246, chars_format::scientific, "1.729e+246"},
+    {1.729e247, chars_format::scientific, "1.729e+247"},
+    {1.729e248, chars_format::scientific, "1.729e+248"},
+    {1.729e249, chars_format::scientific, "1.729e+249"},
+    {1.729e250, chars_format::scientific, "1.729e+250"},
+    {1.729e251, chars_format::scientific, "1.729e+251"},
+    {1.729e252, chars_format::scientific, "1.729e+252"},
+    {1.729e253, chars_format::scientific, "1.729e+253"},
+    {1.729e254, chars_format::scientific, "1.729e+254"},
+    {1.729e255, chars_format::scientific, "1.729e+255"},
+    {1.729e256, chars_format::scientific, "1.729e+256"},
+    {1.729e257, chars_format::scientific, "1.729e+257"},
+    {1.729e258, chars_format::scientific, "1.729e+258"},
+    {1.729e259, chars_format::scientific, "1.729e+259"},
+    {1.729e260, chars_format::scientific, "1.729e+260"},
+    {1.729e261, chars_format::scientific, "1.729e+261"},
+    {1.729e262, chars_format::scientific, "1.729e+262"},
+    {1.729e263, chars_format::scientific, "1.729e+263"},
+    {1.729e264, chars_format::scientific, "1.729e+264"},
+    {1.729e265, chars_format::scientific, "1.729e+265"},
+    {1.729e266, chars_format::scientific, "1.729e+266"},
+    {1.729e267, chars_format::scientific, "1.729e+267"},
+    {1.729e268, chars_format::scientific, "1.729e+268"},
+    {1.729e269, chars_format::scientific, "1.729e+269"},
+    {1.729e270, chars_format::scientific, "1.729e+270"},
+    {1.729e271, chars_format::scientific, "1.729e+271"},
+    {1.729e272, chars_format::scientific, "1.729e+272"},
+    {1.729e273, chars_format::scientific, "1.729e+273"},
+    {1.729e274, chars_format::scientific, "1.729e+274"},
+    {1.729e275, chars_format::scientific, "1.729e+275"},
+    {1.729e276, chars_format::scientific, "1.729e+276"},
+    {1.729e277, chars_format::scientific, "1.729e+277"},
+    {1.729e278, chars_format::scientific, "1.729e+278"},
+    {1.729e279, chars_format::scientific, "1.729e+279"},
+    {1.729e280, chars_format::scientific, "1.729e+280"},
+    {1.729e281, chars_format::scientific, "1.729e+281"},
+    {1.729e282, chars_format::scientific, "1.729e+282"},
+    {1.729e283, chars_format::scientific, "1.729e+283"},
+    {1.729e284, chars_format::scientific, "1.729e+284"},
+    {1.729e285, chars_format::scientific, "1.729e+285"},
+    {1.729e286, chars_format::scientific, "1.729e+286"},
+    {1.729e287, chars_format::scientific, "1.729e+287"},
+    {1.729e288, chars_format::scientific, "1.729e+288"},
+    {1.729e289, chars_format::scientific, "1.729e+289"},
+    {1.729e290, chars_format::scientific, "1.729e+290"},
+    {1.729e291, chars_format::scientific, "1.729e+291"},
+    {1.729e292, chars_format::scientific, "1.729e+292"},
+    {1.729e293, chars_format::scientific, "1.729e+293"},
+    {1.729e294, chars_format::scientific, "1.729e+294"},
+    {1.729e295, chars_format::scientific, "1.729e+295"},
+    {1.729e296, chars_format::scientific, "1.729e+296"},
+    {1.729e297, chars_format::scientific, "1.729e+297"},
+    {1.729e298, chars_format::scientific, "1.729e+298"},
+    {1.729e299, chars_format::scientific, "1.729e+299"},
+    {1.729e300, chars_format::scientific, "1.729e+300"},
+    {1.729e301, chars_format::scientific, "1.729e+301"},
+    {1.729e302, chars_format::scientific, "1.729e+302"},
+    {1.729e303, chars_format::scientific, "1.729e+303"},
+    {1.729e304, chars_format::scientific, "1.729e+304"},
+    {1.729e305, chars_format::scientific, "1.729e+305"},
+    {1.729e306, chars_format::scientific, "1.729e+306"},
+    {1.729e307, chars_format::scientific, "1.729e+307"},
+    {1.729e308, chars_format::scientific, "1.729e+308"},
+
+    // Test all of the cases for fixed notation, including the non-Ryu fallback for large integers.
+    {1.729e-4, chars_format::fixed, "0.0001729"},
+    {1.729e-3, chars_format::fixed, "0.001729"},
+    {1.729e-2, chars_format::fixed, "0.01729"},
+    {1.729e-1, chars_format::fixed, "0.1729"},
+    {1.729e0, chars_format::fixed, "1.729"},
+    {1.729e1, chars_format::fixed, "17.29"},
+    {1.729e2, chars_format::fixed, "172.9"},
+    {1.729e3, chars_format::fixed, "1729"},
+    {1.729e4, chars_format::fixed, "17290"},
+    {1.729e5, chars_format::fixed, "172900"},
+    {1.729e6, chars_format::fixed, "1729000"},
+    {1.729e7, chars_format::fixed, "17290000"},
+    {1.729e8, chars_format::fixed, "172900000"},
+    {1.729e9, chars_format::fixed, "1729000000"},
+    {1.729e10, chars_format::fixed, "17290000000"},
+    {1.729e11, chars_format::fixed, "172900000000"},
+    {1.729e12, chars_format::fixed, "1729000000000"},
+    {1.729e13, chars_format::fixed, "17290000000000"},
+    {1.729e14, chars_format::fixed, "172900000000000"},
+    {1.729e15, chars_format::fixed, "1729000000000000"},
+    {1.729e16, chars_format::fixed, "17290000000000000"},
+    {1.729e17, chars_format::fixed, "172900000000000000"},
+    {1.729e18, chars_format::fixed, "1729000000000000000"},
+    {1.729e19, chars_format::fixed, "17290000000000000000"},
+    {1.729e20, chars_format::fixed, "172900000000000000000"},
+    {1.729e21, chars_format::fixed, "1729000000000000000000"},
+    {1.729e22, chars_format::fixed, "17289999999999999475712"},
+    {1.729e23, chars_format::fixed, "172900000000000015728640"},
+    {1.729e24, chars_format::fixed, "1728999999999999888850944"},
+    {1.729e25, chars_format::fixed, "17290000000000000499122176"},
+    {1.729e26, chars_format::fixed, "172899999999999987811352576"},
+    {1.729e27, chars_format::fixed, "1729000000000000084271955968"},
+    {1.729e28, chars_format::fixed, "17290000000000000842719559680"},
+    {1.729e29, chars_format::fixed, "172900000000000004029149085696"},
+    {1.729e30, chars_format::fixed, "1728999999999999969922746679296"},
+    {1.729e31, chars_format::fixed, "17290000000000000825127373635584"},
+    {1.729e32, chars_format::fixed, "172899999999999994740474854244352"},
+    {1.729e33, chars_format::fixed, "1729000000000000019462342580371456"},
+    {1.729e34, chars_format::fixed, "17290000000000000771084178107138048"},
+    {1.729e35, chars_format::fixed, "172900000000000003099155762643992576"},
+    {1.729e36, chars_format::fixed, "1728999999999999957204581331601719296"},
+    {1.729e37, chars_format::fixed, "17289999999999998981750002957311541248"},
+    {1.729e38, chars_format::fixed, "172900000000000018151698926790986694656"},
+    {1.729e39, chars_format::fixed, "1728999999999999879285534364252573270016"},
+    {1.729e40, chars_format::fixed, "17289999999999999397318253449840320053248"},
+    {1.729e41, chars_format::fixed, "172899999999999993973182534498403200532480"},
+    {1.729e42, chars_format::fixed, "1728999999999999978417451572652165595922432"},
+    {1.729e43, chars_format::fixed, "17290000000000001022114555011901930858348544"},
+    {1.729e44, chars_format::fixed, "172899999999999995365865078694456009793994752"},
+    {1.729e45, chars_format::fixed, "1729000000000000112114975815473235285027848192"},
+    {1.729e46, chars_format::fixed, "17289999999999999853499157926502951353575276544"},
+    {1.729e47, chars_format::fixed, "172900000000000003605593980177947119522565586944"},
+    {1.729e48, chars_format::fixed, "1728999999999999914361482179869448651542148153344"},
+    {1.729e49, chars_format::fixed, "17290000000000001090726143749254847214357604990976"},
+    {1.729e50, chars_format::fixed, "172900000000000000522667720422893215082583391469568"},
+    {1.729e51, chars_format::fixed, "1729000000000000046765052072507553179069804548456448"},
+    {1.729e52, chars_format::fixed, "17289999999999999138422524940159658886890985204219904"},
+    {1.729e53, chars_format::fixed, "172899999999999991384225249401596588868909852042199040"},
+    {1.729e54, chars_format::fixed, "1729000000000000083983435954485197620376402236306096128"},
+    {1.729e55, chars_format::fixed, "17289999999999999478704891861098122350265592635988115456"},
+    {1.729e56, chars_format::fixed, "172899999999999994787048918610981223502655926359881154560"},
+    {1.729e57, chars_format::fixed, "1729000000000000122095061049630305528274358268664135811072"},
+    {1.729e58, chars_format::fixed, "17289999999999999130255748134057135763769994625857466925056"},
+    {1.729e59, chars_format::fixed, "172900000000000002452930080605882928405559082582755422240768"},
+    {1.729e60, chars_format::fixed, "1728999999999999846123339217813844151769844644640662174564352"},
+    {1.729e61, chars_format::fixed, "17290000000000000602104931237078263105127400620649326319763456"},
+    {1.729e62, chars_format::fixed, "172899999999999994603067770723103582584986250610532172135661568"},
+    {1.729e63, chars_format::fixed, "1728999999999999991702603873821752019715013528489166085604507648"},
+    {1.729e64, chars_format::fixed, "17289999999999999917026038738217520197150135284891660856045076480"},
+    {1.729e65, chars_format::fixed, "172899999999999999170260387382175201971501352848916608560450764800"},
+    {1.729e66, chars_format::fixed, "1728999999999999898166499084643965254679184234647052827624824897536"},
+    {1.729e67, chars_format::fixed, "17290000000000000478242667473284240787365111047944340403923172982784"},
+    {1.729e68, chars_format::fixed, "172899999999999992809805261718085701949064960867652907017832337768448"},
+    {1.729e69, chars_format::fixed, "1729000000000000167550480877475991137982372600912339010606311218872320"},
+    {1.729e70, chars_format::fixed, "17289999999999998610513727042982194663129671708505022868584867821518848"},
+    {1.729e71, chars_format::fixed, "172900000000000010625065924284043680364849151489997166585674633152823296"},
+    {1.729e72, chars_format::fixed, "1729000000000000008170944627423549868714281777280183914257442511777693696"},
+    {1.729e73, chars_format::fixed, "17290000000000000081709446274235498687142817772801839142574425117776936960"},
+    {1.729e74, chars_format::fixed, "172900000000000000817094462742354986871428177728018391425744251177769369600"},
+    {1.729e75, chars_format::fixed, "1728999999999999957954130744330103758027966391618852585438598956065417592832"},
+    {1.729e76, chars_format::fixed, "17289999999999999981275818508048606465770187001479176484936738006352384753664"},
+    {1.729e77, chars_format::fixed, "172899999999999993385006008044524962489853500650141354760555404932352506331136"},
+    {1.729e78, chars_format::fixed, "1728999999999999933850060080445249624898535006501413547605554049323525063311360"},
+    {1.729e79, chars_format::fixed, "17289999999999998515748322143849475171500758786338882984687607676445318958809088"},
+    {1.729e80, chars_format::fixed,
+        "172900000000000004903537909292967257574637778551594889639706464367411549771399168"},
+    {1.729e81, chars_format::fixed,
+        "1728999999999999996379233258651079226787363943680732736949516943399559870558502912"},
+    {1.729e82, chars_format::fixed,
+        "17289999999999999121293999238053298684529417967443868818334406229602708671097208832"},
+    {1.729e83, chars_format::fixed,
+        "172900000000000011432899992743512832845555494939161693411202379201456447538679775232"},
+    {1.729e84, chars_format::fixed,
+        "1728999999999999898649426590230009971119434253234571545014868411689984626557915758592"},
+    {1.729e85, chars_format::fixed,
+        "17289999999999998555135119227889862996522101140031624671954373356250686567921393598464"},
+    {1.729e86, chars_format::fixed,
+        "172899999999999992453097539069462417399976873677341699170652705732893420841738159783936"},
+    {1.729e87, chars_format::fixed,
+        "1729000000000000034958916939343644772955862533205824230924270612055119091017769178628096"},
+    {1.729e88, chars_format::fixed,
+        "17289999999999999907877403198840365333734250146328613352371731901646451379776141463126016"},
+    {1.729e89, chars_format::fixed,
+        "172900000000000013213550550215478290003722507406634260143588494021416178770611024972218368"},
+    {1.729e90, chars_format::fixed,
+        "1729000000000000019057293356338185806706185026519557588476915540174548467923313366994518016"},
+    {1.729e91, chars_format::fixed,
+        "17289999999999998833634387813582692947089369694634155729261522601270124841839571077213192192"},
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+        "1728999999999999908612831898032541832095701003383549119633402005314792606560057181899736337684460333156593"
+        "5150467248025542870855220739051355206074308702156970044866341045344963443958827108482744394846715467196791"
+        "74270431983942825289995878606968039445389238499093310627026709121794255026067310987781764808704"},
+    {1.729e307, chars_format::fixed,
+        "1729000000000000033352851243952530060618995568185959498849105782530888950469259834225479579494714444716466"
+        "3583364561206381900132841048578837979817054698194932027240269064982663447504421537030567855922618194063780"
+        "901052285179380748731715320520224387509426927770960704712217658015290076287147169396782654291968"},
+    {1.729e308, chars_format::fixed,
+        "1729000000000000033352851243952530060618995568185959498849105782530888950469259834225479579494714444716466"
+        "3583364561206381900132841048578837979817054698194932027240269064982663447504421537030567855922618194063780"
+        "9010522851793807487317153205202243875094269277709607047122176580152900762871471693967826542919680"},
+
+    // Also test one-digit cases, where the decimal point can't appear between digits like "17.29".
+    {7e-3, chars_format::fixed, "0.007"},
+    {7e-2, chars_format::fixed, "0.07"},
+    {7e-1, chars_format::fixed, "0.7"},
+    {7e0, chars_format::fixed, "7"},
+    {7e1, chars_format::fixed, "70"},
+    {7e2, chars_format::fixed, "700"},
+    {7e3, chars_format::fixed, "7000"},
+
+    // Test the maximum value in fixed notation.
+    {0x1.fffffffffffffp+1023, chars_format::fixed,
+        "1797693134862315708145274237317043567980705675258449965989174768031572607800285387605895586327668781715404"
+        "5895351438246423432132688946418276846754670353751698604991057655128207624549009038932894407586850845513394"
+        "2304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368"},
+
+    // Test highly-trimmed powers of 2.
+    {0x1p959, chars_format::fixed,
+        "4872657005699999540176691193937594155438113428797503763433953228606474345383213051232807532941005129612652"
+        "4581157043340917295849326015470232889936481563267097656388499782365149353948277450268241763997967396091894"
+        "36842798962697437472873181807734482806413869401552138773540914294995957055488"},
+    {0x1p959, chars_format::scientific, "4.8726570057e+288"},
+    {0x1p960, chars_format::fixed,
+        "9745314011399999080353382387875188310876226857595007526867906457212948690766426102465615065882010259225304"
+        "9162314086681834591698652030940465779872963126534195312776999564730298707896554900536483527995934792183788"
+        "73685597925394874945746363615468965612827738803104277547081828589991914110976"},
+    {0x1p960, chars_format::scientific, "9.7453140114e+288"},
+
+    // Test powers of 10 that are exactly representable.
+    {1e0, chars_format::fixed, "1"},
+    {1e1, chars_format::fixed, "10"},
+    {1e2, chars_format::fixed, "100"},
+    {1e3, chars_format::fixed, "1000"},
+    {1e4, chars_format::fixed, "10000"},
+    {1e5, chars_format::fixed, "100000"},
+    {1e6, chars_format::fixed, "1000000"},
+    {1e7, chars_format::fixed, "10000000"},
+    {1e8, chars_format::fixed, "100000000"},
+    {1e9, chars_format::fixed, "1000000000"},
+    {1e10, chars_format::fixed, "10000000000"},
+    {1e11, chars_format::fixed, "100000000000"},
+    {1e12, chars_format::fixed, "1000000000000"},
+    {1e13, chars_format::fixed, "10000000000000"},
+    {1e14, chars_format::fixed, "100000000000000"},
+    {1e15, chars_format::fixed, "1000000000000000"},
+    {1e16, chars_format::fixed, "10000000000000000"},
+    {1e17, chars_format::fixed, "100000000000000000"},
+    {1e18, chars_format::fixed, "1000000000000000000"},
+    {1e19, chars_format::fixed, "10000000000000000000"},
+    {1e20, chars_format::fixed, "100000000000000000000"},
+    {1e21, chars_format::fixed, "1000000000000000000000"},
+    {1e22, chars_format::fixed, "10000000000000000000000"},
+
+    // Test powers of 10 that aren't exactly representable.
+    // This exercises the "adjustment" code.
+    {1e23, chars_format::fixed, "99999999999999991611392"},
+    {1e24, chars_format::fixed, "999999999999999983222784"},
+    {1e25, chars_format::fixed, "10000000000000000905969664"},
+    {1e26, chars_format::fixed, "100000000000000004764729344"},
+    {1e27, chars_format::fixed, "1000000000000000013287555072"},
+    {1e28, chars_format::fixed, "9999999999999999583119736832"},
+    {1e29, chars_format::fixed, "99999999999999991433150857216"},
+    {1e30, chars_format::fixed, "1000000000000000019884624838656"},
+    {1e31, chars_format::fixed, "9999999999999999635896294965248"},
+    {1e32, chars_format::fixed, "100000000000000005366162204393472"},
+    {1e33, chars_format::fixed, "999999999999999945575230987042816"},
+    {1e34, chars_format::fixed, "9999999999999999455752309870428160"},
+    {1e35, chars_format::fixed, "99999999999999996863366107917975552"},
+    {1e36, chars_format::fixed, "1000000000000000042420637374017961984"},
+    {1e37, chars_format::fixed, "9999999999999999538762658202121142272"},
+    {1e38, chars_format::fixed, "99999999999999997748809823456034029568"},
+    {1e39, chars_format::fixed, "999999999999999939709166371603178586112"},
+    {1e40, chars_format::fixed, "10000000000000000303786028427003666890752"},
+    {1e41, chars_format::fixed, "100000000000000000620008645040778319495168"},
+    {1e42, chars_format::fixed, "1000000000000000044885712678075916785549312"},
+    {1e43, chars_format::fixed, "10000000000000000139372116959414099130712064"},
+    {1e44, chars_format::fixed, "100000000000000008821361405306422640701865984"},
+    {1e45, chars_format::fixed, "999999999999999929757289024535551219930759168"},
+    {1e46, chars_format::fixed, "9999999999999999931398190359470212947659194368"},
+    {1e47, chars_format::fixed, "100000000000000004384584304507619735463404765184"},
+    {1e48, chars_format::fixed, "1000000000000000043845843045076197354634047651840"},
+    {1e49, chars_format::fixed, "9999999999999999464902769475481793196872414789632"},
+    {1e50, chars_format::fixed, "100000000000000007629769841091887003294964970946560"},
+    {1e51, chars_format::fixed, "999999999999999993220948674361627976461708441944064"},
+    {1e52, chars_format::fixed, "9999999999999999932209486743616279764617084419440640"},
+    {1e53, chars_format::fixed, "99999999999999999322094867436162797646170844194406400"},
+    {1e54, chars_format::fixed, "1000000000000000078291540404596243842305360299886116864"},
+    {1e55, chars_format::fixed, "10000000000000000102350670204085511496304388135324745728"},
+    {1e56, chars_format::fixed, "100000000000000009190283508143378238084034459715684532224"},
+    {1e57, chars_format::fixed, "1000000000000000048346692115553659057528394845890514255872"},
+    {1e58, chars_format::fixed, "9999999999999999438119489974413630815797154428513196965888"},
+    {1e59, chars_format::fixed, "99999999999999997168788049560464200849936328366177157906432"},
+    {1e60, chars_format::fixed, "999999999999999949387135297074018866963645011013410073083904"},
+    {1e61, chars_format::fixed, "9999999999999999493871352970740188669636450110134100730839040"},
+    {1e62, chars_format::fixed, "100000000000000003502199685943161173046080317798311825604870144"},
+    {1e63, chars_format::fixed, "1000000000000000057857959942726969827393378689175040438172647424"},
+    {1e64, chars_format::fixed, "10000000000000000213204190094543968723012578712679649467743338496"},
+    {1e65, chars_format::fixed, "99999999999999999209038626283633850822756121694230455365568299008"},
+    {1e66, chars_format::fixed, "999999999999999945322333868247445125709646570021247924665841614848"},
+    {1e67, chars_format::fixed, "9999999999999999827367757839185598317239782875580932278577147150336"},
+    {1e68, chars_format::fixed, "99999999999999995280522225138166806691251291352861698530421623488512"},
+    {1e69, chars_format::fixed, "1000000000000000072531436381529235126158374409646521955518210155479040"},
+    {1e70, chars_format::fixed, "10000000000000000725314363815292351261583744096465219555182101554790400"},
+    {1e71, chars_format::fixed, "100000000000000004188152556421145795899143386664033828314342771180699648"},
+    {1e72, chars_format::fixed, "999999999999999943801810948794571024057224129020550531544123892056457216"},
+    {1e73, chars_format::fixed, "9999999999999999830336967949613257980309080240684656321838454199566729216"},
+    {1e74, chars_format::fixed, "99999999999999995164818811802792197885196090803013355167206819763650035712"},
+    {1e75, chars_format::fixed, "999999999999999926539781176481198923508803215199467887262646419780362305536"},
+    {1e76, chars_format::fixed, "10000000000000000470601344959054695891559601407866630764278709534898249531392"},
+    {1e77, chars_format::fixed, "99999999999999998278261272554585856747747644714015897553975120217811154108416"},
+    {1e78, chars_format::fixed, "1000000000000000008493621433689702976148869924598760615894999102702796905906176"},
+    {1e79, chars_format::fixed, "9999999999999999673560075006595519222746403606649979913266024618633003221909504"},
+    {1e80, chars_format::fixed, "100000000000000000026609864708367276537402401181200809098131977453489758916313088"},
+    {1e81, chars_format::fixed, "999999999999999921281879895665782741935503249059183851809998224123064148429897728"},
+    {1e82, chars_format::fixed, "9999999999999999634067965630886574211027143225273567793680363843427086501542887424"},
+    {1e83, chars_format::fixed, "100000000000000003080666323096525690777025204007643346346089744069413985291331436544"},
+    {1e84, chars_format::fixed,
+        "1000000000000000057766609898115896702437267127096064137098041863234712334016924614656"},
+    {1e85, chars_format::fixed,
+        "10000000000000000146306952306748730309700429878646550592786107871697963642511482159104"},
+    {1e86, chars_format::fixed,
+        "100000000000000001463069523067487303097004298786465505927861078716979636425114821591040"},
+    {1e87, chars_format::fixed,
+        "999999999999999959416724456350362731491996089648451439669739009806703922950954425516032"},
+    {1e88, chars_format::fixed,
+        "9999999999999999594167244563503627314919960896484514396697390098067039229509544255160320"},
+    {1e89, chars_format::fixed,
+        "99999999999999999475366575191804932315794610450682175621941694731908308538307845136842752"},
+    {1e90, chars_format::fixed,
+        "999999999999999966484112715463900049825186092620125502979674597309179755437379230686511104"},
+    {1e91, chars_format::fixed,
+        "10000000000000000795623248612804971431562261401669105159386439973487930752201761134141767680"},
+    {1e92, chars_format::fixed,
+        "100000000000000004337729697461918607329029332495193931179177378933611681288968111094132375552"},
+    {1e93, chars_format::fixed,
+        "1000000000000000043377296974619186073290293324951939311791773789336116812889681110941323755520"},
+    {1e94, chars_format::fixed,
+        "10000000000000000202188791271559469885760963232143577411377768562080040049981643093586978275328"},
+    {1e95, chars_format::fixed,
+        "100000000000000002021887912715594698857609632321435774113777685620800400499816430935869782753280"},
+    {1e96, chars_format::fixed,
+        "1000000000000000049861653971908893017010268485438462151574892930611988399099305815384459015356416"},
+    {1e97, chars_format::fixed,
+        "10000000000000000735758738477112498397576062152177456799245857901351759143802190202050679656153088"},
+    {1e98, chars_format::fixed,
+        "99999999999999999769037024514370800696612547992403838920556863966097586548129676477911932478685184"},
+    {1e99, chars_format::fixed,
+        "999999999999999967336168804116691273849533185806555472917961779471295845921727862608739868455469056"},
+    {1e100, chars_format::fixed,
+        "10000000000000000159028911097599180468360808563945281389781327557747838772170381060813469985856815104"},
+    {1e101, chars_format::fixed,
+        "99999999999999997704951326524533662844684271992415000612999597473199345218078991130326129448151154688"},
+    {1e102, chars_format::fixed,
+        "999999999999999977049513265245336628446842719924150006129995974731993452180789911303261294481511546880"},
+    {1e103, chars_format::fixed,
+        "10000000000000000019156750857346687362159551272651920111528035145993793242039887559612361451081803235328"},
+    {1e104, chars_format::fixed,
+        "10000000000000000019156750857346687362159551272651920111528035145993793242039887559612361451081803235328"
+        "0"},
+    {1e105, chars_format::fixed,
+        "99999999999999993825830082528197854032702736447212447829441621253887149182459971363682052750390825530163"
+        "2"},
+    {1e106, chars_format::fixed,
+        "1000000000000000091035999050368435010460453995175486557154545737484090289535133415215418009754161219056435"
+        "2"},
+    {1e107, chars_format::fixed,
+        "9999999999999999688138404702992698343537126906127968940664421175279152513667064539525400239539588480525926"
+        "4"},
+    {1e108, chars_format::fixed,
+        "1000000000000000033998991713002824594943974719712898047713430714837875271723200833292741616380733445921308"
+        "672"},
+    {1e109, chars_format::fixed,
+        "9999999999999999818508707188399807864717650964328171247958398369899072554380053298205803424393137676263358"
+        "464"},
+    {1e110, chars_format::fixed,
+        "1000000000000000023569367514170255833249532795056881863129912539268281668466161732598309361592449510262314"
+        "10688"},
+    {1e111, chars_format::fixed,
+        "9999999999999999568197726416418157584051044772583782817953962156228826076211114881539429309474323220447488"
+        "90112"},
+    {1e112, chars_format::fixed,
+        "9999999999999999301199346926304397284673331501389768492615896861647229832830913903761963586894254467577228"
+        "034048"},
+    {1e113, chars_format::fixed,
+        "1000000000000000015559416129466843024268201396921061433369770580430833781164755703264985389915047447676206"
+        "28086784"},
+    {1e114, chars_format::fixed,
+        "1000000000000000015559416129466843024268201396921061433369770580430833781164755703264985389915047447676206"
+        "280867840"},
+    {1e115, chars_format::fixed,
+        "1000000000000000015559416129466843024268201396921061433369770580430833781164755703264985389915047447676206"
+        "2808678400"},
+    {1e116, chars_format::fixed,
+        "1000000000000000015559416129466843024268201396921061433369770580430833781164755703264985389915047447676206"
+        "28086784000"},
+    {1e117, chars_format::fixed,
+        "1000000000000000050555427725995033814228237030803003279020481474722232763977085405824233377105062219252417"
+        "113236701184"},
+    {1e118, chars_format::fixed,
+        "9999999999999999665649998943273759183241515094863428494587753284228752052274941196820382078490267674695111"
+        "155514343424"},
+    {1e119, chars_format::fixed,
+        "9999999999999999441675524725493338127497287038019000682423203560763798562276031100441194960474173136607361"
+        "8283536318464"},
+    {1e120, chars_format::fixed,
+        "9999999999999999800034683473942011816688051928970085181886483118307724146274287254647894349299924397547760"
+        "75181077037056"},
+    {1e121, chars_format::fixed,
+        "1000000000000000037340933747145988971939327575449182038102773041037800508067149710137861337142112641505239"
+        "9029342192009216"},
+    {1e122, chars_format::fixed,
+        "1000000000000000014405947587245273855831118622428312630137123149354989270691261316268632576257264560805054"
+        "37183296233537536"},
+    {1e123, chars_format::fixed,
+        "9999999999999999777099697314041296700579842975949215773920833226624912908898398860778665588415076316847575"
+        "22070951350501376"},
+    {1e124, chars_format::fixed,
+        "9999999999999999483531874467312143214394768377282087351960514613084929070487027419252537449089020883885200"
+        "422613425626021888"},
+    {1e125, chars_format::fixed,
+        "9999999999999999248677616189928820425446708698348384614392259722252941999757930266031634937628176537515300"
+        "5841365553228283904"},
+    {1e126, chars_format::fixed,
+        "9999999999999999248677616189928820425446708698348384614392259722252941999757930266031634937628176537515300"
+        "58413655532282839040"},
+    {1e127, chars_format::fixed,
+        "9999999999999999549291066784979473595300225087383524118479625982517885450291174622154390152298057300868772"
+        "377386949310916067328"},
+    {1e128, chars_format::fixed,
+        "1000000000000000075174486916518208627471429064352408213482909102357765925242415204664541101097758035428265"
+        "95503885252632667750400"},
+    {1e129, chars_format::fixed,
+        "9999999999999999982174435641852414159889288687594125004365433397299404019059046494971157661422685600097771"
+        "75966751665376232210432"},
+    {1e130, chars_format::fixed,
+        "1000000000000000059783078246051615185174929025233809070873635949832200820575113093631056034106660140344568"
+        "1992244323541365884452864"},
+    {1e131, chars_format::fixed,
+        "9999999999999999120255550095723181391285286496952573018246136855867758157690128277095993909921203475410697"
+        "4340599870111173348163584"},
+    {1e132, chars_format::fixed,
+        "9999999999999999908295674023612765636866088499824849119840922265176691516655996362010429339865415703696022"
+        "53175829982724989462249472"},
+    {1e133, chars_format::fixed,
+        "1000000000000000022351172359476859933509840930097375956047883642890026486024234359597620351184310059501015"
+        "2570837624953702918544949248"},
+    {1e134, chars_format::fixed,
+        "9999999999999999214820364967069931500754982737297246150437511104984830160766032447285726161514508942804936"
+        "4457837845490532419930947584"},
+    {1e135, chars_format::fixed,
+        "9999999999999999618296908418149398634492353362767851514454041234551004040556556906761917101645945603687022"
+        "89580532071091311261383655424"},
+    {1e136, chars_format::fixed,
+        "1000000000000000058664061270074011975546204286389730438809371354550982135205381560950477535796139358980403"
+        "0375857007499376802103616864256"},
+    {1e137, chars_format::fixed,
+        "1000000000000000032841562489204926078987012566359611695512313426258747006898787995544001315627727412683949"
+        "50478432243557864849063421149184"},
+    {1e138, chars_format::fixed,
+        "1000000000000000032841562489204926078987012566359611695512313426258747006898787995544001315627727412683949"
+        "504784322435578648490634211491840"},
+    {1e139, chars_format::fixed,
+        "1000000000000000032841562489204926078987012566359611695512313426258747006898787995544001315627727412683949"
+        "5047843224355786484906342114918400"},
+    {1e140, chars_format::fixed,
+        "1000000000000000059283801240814870037063624887670453288648500744829995778284739806520232965080181245691517"
+        "92237293382948229697163514582401024"},
+    {1e141, chars_format::fixed,
+        "1000000000000000016976219238238959704141045173573106739630601035115997744067216908958262325956255112879408"
+        "454231155599236459402033650892537856"},
+    {1e142, chars_format::fixed,
+        "1000000000000000050822284840299687970479108944850983978844920802887196171441235227007838837255396019129096"
+        "0287445781834331294577148468377157632"},
+    {1e143, chars_format::fixed,
+        "1000000000000000023745432358651105357408657927828682187473464988670237429542020572568177628216083294129345"
+        "96913384011607579341316989008157343744"},
+    {1e144, chars_format::fixed,
+        "1000000000000000023745432358651105357408657927828682187473464988670237429542020572568177628216083294129345"
+        "969133840116075793413169890081573437440"},
+    {1e145, chars_format::fixed,
+        "9999999999999999890870611821409196126784806260401358945180015464725302399110258148854112806457630061296658"
+        "928320953898584032761523454337112604672"},
+    {1e146, chars_format::fixed,
+        "9999999999999999336336672997246224211101969431784618257892600389561987365014342025929851245332505453301777"
+        "7074930382791057905692427399713177731072"},
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+        "0505057184069381648545374773244373557467226310750742042216461653692645376"},
+    {1e285, chars_format::fixed,
+        "9999999999999999801591579205204428501931095198528472118000257105616503599825380852240886161861464938442861"
+        "4939722145037261932089543889369794765216645522533405937274641374814720644342089175254062058753036222027386"
+        "3006901551095990707698442841525909542472844588688081080376132618600579072"},
+    {1e286, chars_format::fixed,
+        "1000000000000000032988611034086967485427088011504507863684758314173802572778608987891478871858632441286011"
+        "7381629402398400588202211517615861824081167237790591132705927077058380451118207922609574937392980048643791"
+        "654301923722148311225012721166820834263125344653917287293299907083743789056"},
+    {1e287, chars_format::fixed,
+        "1000000000000000075252173524940187193614270804825836385192544397063524343015465710025391076396621199239392"
+        "2091755152714140104196817220558967702128769386220391563888697428719907160465407126676909922607121189796634"
+        "0736882502910990345434353553680702253338428636675464684849307718019341877248"},
+    {1e288, chars_format::fixed,
+        "1000000000000000007630473539575035660514778335511710750780086664439969510636494954611131549135839186513983"
+        "4555553952208956878605448095849998297252605948732710873996264866061464425509888400169173946264495363952086"
+        "20267012778077787723395914064607119962069483324573977857832138825282954985472"},
+    {1e289, chars_format::fixed,
+        "1000000000000000061727833527867156886994372310963011258310052850538813376539671558942539170944464796694310"
+        "4584514912613103459078543395617173821153536698722855425910210916188218613474303381375362727338596024627724"
+        "499484625789034803081540112423670420191213257583185130503608895092113260150784"},
+    {1e290, chars_format::fixed,
+        "1000000000000000061727833527867156886994372310963011258310052850538813376539671558942539170944464796694310"
+        "4584514912613103459078543395617173821153536698722855425910210916188218613474303381375362727338596024627724"
+        "4994846257890348030815401124236704201912132575831851305036088950921132601507840"},
+    {1e291, chars_format::fixed,
+        "9999999999999999578609023503462841321535518780965142838525177732290331540055724786262365370719036251480826"
+        "1289098686371420245702004200641968152637496587417778862354344999448505725826266174594802676763227561304989"
+        "6960078961318150545418464661067991669581788285529005480705688196068853638234112"},
+    {1e292, chars_format::fixed,
+        "1000000000000000013256598978357416268068656108958646003563203147794249272690425321461597941803936249972737"
+        "4638565892090988122974650007025784551738302746731685907395315255274646861058187558214617579496201832662352"
+        "585538835573636597522107561710941518560028749376834095178551288964115055725510656"},
+    {1e293, chars_format::fixed,
+        "9999999999999999246234843735396048506044893395792352520261065484899034827946607729250196942326840502532897"
+        "0231162545648343655275306678872441733790178059478330735395060467469727994972900530063978805843953102113868"
+        "000379620369084502134308975505229555772913629423636305841602377586326247764393984"},
+    {1e294, chars_format::fixed,
+        "1000000000000000066436467741248103118547156170586292454485461107376856746627884050583544890346687569804406"
+        "1207835674606680377442921610508908778753873711201997607708800780391251297994726061339549398843285746132932"
+        "05683935969567348590731356020719265634967118123751637393518591968740451429495341056"},
+    {1e295, chars_format::fixed,
+        "9999999999999999813486777206230041577815560719820581330098483720446847883279500839884297726782854580737362"
+        "6970040225815727702936870449359100155289601680494988872072239402046841988962644563396584878879514845800049"
+        "02758521100414464490983962613190835886243290260424727924570510530141380583845003264"},
+    {1e296, chars_format::fixed,
+        "9999999999999999813486777206230041577815560719820581330098483720446847883279500839884297726782854580737362"
+        "6970040225815727702936870449359100155289601680494988872072239402046841988962644563396584878879514845800049"
+        "027585211004144644909839626131908358862432902604247279245705105301413805838450032640"},
+    {1e297, chars_format::fixed,
+        "1000000000000000017652801462756379714374878780719864776839443139119744823869255243069012222883470359078822"
+        "0728292194112285349344027126247056154504923279794565007954563392017619494511608074472945276562227436175920"
+        "48849967890105831362861792425329827928397252374398383022243308510390698430058459037696"},
+    {1e298, chars_format::fixed,
+        "9999999999999999595662034753429788238255624467393741467120915117996487670031669885400803025551745174706847"
+        "8782311196631452228634829961492223321433823010024592147588202691169230215270582854596864146833859136224555"
+        "51313826420028155008403585629126369847605750170289266545852965785882018353801250996224"},
+    {1e299, chars_format::fixed,
+        "1000000000000000052504760255204420248704468581108159154915854115511802457988908195786371375080447864043704"
+        "4438328838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999"
+        "4508111903896764088007465274278014249457925878882005684283811566947219638686545940054016"},
+    {1e300, chars_format::fixed,
+        "1000000000000000052504760255204420248704468581108159154915854115511802457988908195786371375080447864043704"
+        "4438328838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999"
+        "45081119038967640880074652742780142494579258788820056842838115669472196386865459400540160"},
+    {1e301, chars_format::fixed,
+        "1000000000000000052504760255204420248704468581108159154915854115511802457988908195786371375080447864043704"
+        "4438328838781769425232353604305756447921847867069828483872009265758037378302337947880900593689532349707999"
+        "450811190389676408800746527427801424945792587888200568428381156694721963868654594005401600"},
+    {1e302, chars_format::fixed,
+        "1000000000000000076297030790848949253473468551506568117016017342062113802881257944841421889646917840766397"
+        "4757713854876137221038784479993829181561135051983075016764985648898162653636809541460731423515105837345898"
+        "6890825155659063617715863205282622390509284183439858617103083735673849899204570498157510656"},
+    {1e303, chars_format::fixed,
+        "1000000000000000000161765076786456438212668646231659438295495017101117499225738747865260243034213915253779"
+        "7735681803374160274458205677791996433915416060260686111507461222849761772566500442005272768073270676904621"
+        "12661427500197051226489898260678763391449376088547292320814127957486330655468919122263277568"},
+    {1e304, chars_format::fixed,
+        "9999999999999999392535525055364621860040287220117324953190771571323204563013233902843309257440507748436856"
+        "1180561621725787171937426360305302357988408668827749873014416820110410677102531624409058437198025485515990"
+        "76639682550821832659549112269607949805346034918662572406407604380845959862074904348138143744"},
+    {1e305, chars_format::fixed,
+        "9999999999999999392535525055364621860040287220117324953190771571323204563013233902843309257440507748436856"
+        "1180561621725787171937426360305302357988408668827749873014416820110410677102531624409058437198025485515990"
+        "766396825508218326595491122696079498053460349186625724064076043808459598620749043481381437440"},
+    {1e306, chars_format::fixed,
+        "1000000000000000017216064596736454828831087825013238982328892017892380671244575047987920451875459594568606"
+        "1388616982910603110492255329485206969388057114406501226285146694284603569926249680283295506892241752843467"
+        "30060716088829214255439694630119794546505512415617982143262670862918816362862119154749127262208"},
+    {1e307, chars_format::fixed,
+        "9999999999999999860310597602564577717002641838126363875249660735883565852672743849064846414228960666786379"
+        "2803926546153933531728502521033362759523706153970107306916646893751785690398510731463396416232660711267200"
+        "11020169553304018596457812688561947201171488461172921822139066929851282122002676667750021070848"},
+    {1e308, chars_format::fixed,
+        "1000000000000000010979063629440455417404923096773118463368106829031575854049114915371633289784946888990612"
+        "4966972117251561159028374314008832830700919814604603127166450293302718569748969958855904333838446616500117"
+        "8426897626212945177628091195786707458122783970171784415105291802893207873272974885715430223118336"},
+
+    // These numbers have odd mantissas (unaffected by shifting)
+    // that are barely within the "max shifted mantissa" limit.
+    // They're exactly-representable multiples of powers of 10, and can use Ryu with zero-filling.
+    {1801439850948197e1, chars_format::fixed, "18014398509481970"},
+    {360287970189639e2, chars_format::fixed, "36028797018963900"},
+    {72057594037927e3, chars_format::fixed, "72057594037927000"},
+    {14411518807585e4, chars_format::fixed, "144115188075850000"},
+    {2882303761517e5, chars_format::fixed, "288230376151700000"},
+    {576460752303e6, chars_format::fixed, "576460752303000000"},
+    {115292150459e7, chars_format::fixed, "1152921504590000000"},
+    {23058430091e8, chars_format::fixed, "2305843009100000000"},
+    {4611686017e9, chars_format::fixed, "4611686017000000000"},
+    {922337203e10, chars_format::fixed, "9223372030000000000"},
+    {184467439e11, chars_format::fixed, "18446743900000000000"},
+    {36893487e12, chars_format::fixed, "36893487000000000000"},
+    {7378697e13, chars_format::fixed, "73786970000000000000"},
+    {1475739e14, chars_format::fixed, "147573900000000000000"},
+    {295147e15, chars_format::fixed, "295147000000000000000"},
+    {59029e16, chars_format::fixed, "590290000000000000000"},
+    {11805e17, chars_format::fixed, "1180500000000000000000"},
+    {2361e18, chars_format::fixed, "2361000000000000000000"},
+    {471e19, chars_format::fixed, "4710000000000000000000"},
+    {93e20, chars_format::fixed, "9300000000000000000000"},
+    {17e21, chars_format::fixed, "17000000000000000000000"},
+    {3e22, chars_format::fixed, "30000000000000000000000"},
+
+    // These numbers have odd mantissas (unaffected by shifting)
+    // that are barely above the "max shifted mantissa" limit.
+    // This activates the non-Ryu fallback for large integers.
+    {1801439850948199e1, chars_format::fixed, "18014398509481992"},
+    {360287970189641e2, chars_format::fixed, "36028797018964096"},
+    {72057594037929e3, chars_format::fixed, "72057594037928992"},
+    {14411518807587e4, chars_format::fixed, "144115188075870016"},
+    {2882303761519e5, chars_format::fixed, "288230376151900032"},
+    {576460752305e6, chars_format::fixed, "576460752304999936"},
+    {115292150461e7, chars_format::fixed, "1152921504609999872"},
+    {23058430093e8, chars_format::fixed, "2305843009299999744"},
+    {4611686019e9, chars_format::fixed, "4611686019000000512"},
+    {922337205e10, chars_format::fixed, "9223372049999998976"},
+    {184467441e11, chars_format::fixed, "18446744099999997952"},
+    {36893489e12, chars_format::fixed, "36893488999999995904"},
+    {7378699e13, chars_format::fixed, "73786990000000008192"},
+    {1475741e14, chars_format::fixed, "147574099999999983616"},
+    {295149e15, chars_format::fixed, "295148999999999967232"},
+    {59031e16, chars_format::fixed, "590310000000000065536"},
+    {11807e17, chars_format::fixed, "1180700000000000131072"},
+    {2363e18, chars_format::fixed, "2363000000000000262144"},
+    {473e19, chars_format::fixed, "4729999999999999475712"},
+    {95e20, chars_format::fixed, "9500000000000001048576"},
+    {19e21, chars_format::fixed, "19000000000000002097152"},
+    {5e22, chars_format::fixed, "49999999999999995805696"},
+
+    // Test the mantissa shifting logic.
+    // Also test a large shift, because 32-bit platforms need to simulate _BitScanForward64().
+    {302230528e15, chars_format::fixed, "302230528000000000000000"}, // 295147 * 2^10
+    {302232576e15, chars_format::fixed, "302232575999999966445568"}, // 295149 * 2^10
+    {81123342286848e18, chars_format::fixed, "81123342286848000000000000000000"}, // 2361 * 2^35
+    {81192061763584e18, chars_format::fixed, "81192061763584009007199254740992"}, // 2363 * 2^35
+
+    // Inspect all of those numbers in scientific notation.
+    // For the within-limit numbers, this verifies that Ryu is actually being used with zero-filling above.
+    // For the above-limit numbers, this tests Ryu's trimming.
+    {1801439850948197e1, chars_format::scientific, "1.801439850948197e+16"},
+    {360287970189639e2, chars_format::scientific, "3.60287970189639e+16"},
+    {72057594037927e3, chars_format::scientific, "7.2057594037927e+16"},
+    {14411518807585e4, chars_format::scientific, "1.4411518807585e+17"},
+    {2882303761517e5, chars_format::scientific, "2.882303761517e+17"},
+    {576460752303e6, chars_format::scientific, "5.76460752303e+17"},
+    {115292150459e7, chars_format::scientific, "1.15292150459e+18"},
+    {23058430091e8, chars_format::scientific, "2.3058430091e+18"},
+    {4611686017e9, chars_format::scientific, "4.611686017e+18"},
+    {922337203e10, chars_format::scientific, "9.22337203e+18"},
+    {184467439e11, chars_format::scientific, "1.84467439e+19"},
+    {36893487e12, chars_format::scientific, "3.6893487e+19"},
+    {7378697e13, chars_format::scientific, "7.378697e+19"},
+    {1475739e14, chars_format::scientific, "1.475739e+20"},
+    {295147e15, chars_format::scientific, "2.95147e+20"},
+    {59029e16, chars_format::scientific, "5.9029e+20"},
+    {11805e17, chars_format::scientific, "1.1805e+21"},
+    {2361e18, chars_format::scientific, "2.361e+21"},
+    {471e19, chars_format::scientific, "4.71e+21"},
+    {93e20, chars_format::scientific, "9.3e+21"},
+    {17e21, chars_format::scientific, "1.7e+22"},
+    {3e22, chars_format::scientific, "3e+22"},
+    {1801439850948199e1, chars_format::scientific, "1.801439850948199e+16"},
+    {360287970189641e2, chars_format::scientific, "3.60287970189641e+16"},
+    {72057594037929e3, chars_format::scientific, "7.2057594037929e+16"},
+    {14411518807587e4, chars_format::scientific, "1.4411518807587e+17"},
+    {2882303761519e5, chars_format::scientific, "2.882303761519e+17"},
+    {576460752305e6, chars_format::scientific, "5.76460752305e+17"},
+    {115292150461e7, chars_format::scientific, "1.15292150461e+18"},
+    {23058430093e8, chars_format::scientific, "2.3058430093e+18"},
+    {4611686019e9, chars_format::scientific, "4.611686019e+18"},
+    {922337205e10, chars_format::scientific, "9.22337205e+18"},
+    {184467441e11, chars_format::scientific, "1.84467441e+19"},
+    {36893489e12, chars_format::scientific, "3.6893489e+19"},
+    {7378699e13, chars_format::scientific, "7.378699e+19"},
+    {1475741e14, chars_format::scientific, "1.475741e+20"},
+    {295149e15, chars_format::scientific, "2.95149e+20"},
+    {59031e16, chars_format::scientific, "5.9031e+20"},
+    {11807e17, chars_format::scientific, "1.1807e+21"},
+    {2363e18, chars_format::scientific, "2.363e+21"},
+    {473e19, chars_format::scientific, "4.73e+21"},
+    {95e20, chars_format::scientific, "9.5e+21"},
+    {19e21, chars_format::scientific, "1.9e+22"},
+    {5e22, chars_format::scientific, "5e+22"},
+    {302230528e15, chars_format::scientific, "3.02230528e+23"},
+    {302232576e15, chars_format::scientific, "3.02232576e+23"},
+    {81123342286848e18, chars_format::scientific, "8.1123342286848e+31"},
+    {81192061763584e18, chars_format::scientific, "8.1192061763584e+31"},
+
+    // Test the switching logic of chars_format::general.
+    // C11 7.21.6.1 "The fprintf function"/8:
+    // "Let P equal [...] 6 if the precision is omitted [...].
+    // Then, if a conversion with style E would have an exponent of X:
+    // - if P > X >= -4, the conversion is with style f [...].
+    // - otherwise, the conversion is with style e [...]."
+    {1e-6, chars_format::general, "1e-06"},
+    {1e-5, chars_format::general, "1e-05"},
+    {1e-4, chars_format::general, "0.0001"},
+    {1e-3, chars_format::general, "0.001"},
+    {1e-2, chars_format::general, "0.01"},
+    {1e-1, chars_format::general, "0.1"},
+    {1e0, chars_format::general, "1"},
+    {1e1, chars_format::general, "10"},
+    {1e2, chars_format::general, "100"},
+    {1e3, chars_format::general, "1000"},
+    {1e4, chars_format::general, "10000"},
+    {1e5, chars_format::general, "100000"},
+    {1e6, chars_format::general, "1e+06"},
+    {1e7, chars_format::general, "1e+07"},
+    {1.234e-6, chars_format::general, "1.234e-06"},
+    {1.234e-5, chars_format::general, "1.234e-05"},
+    {1.234e-4, chars_format::general, "0.0001234"},
+    {1.234e-3, chars_format::general, "0.001234"},
+    {1.234e-2, chars_format::general, "0.01234"},
+    {1.234e-1, chars_format::general, "0.1234"},
+    {1.234e0, chars_format::general, "1.234"},
+    {1.234e1, chars_format::general, "12.34"},
+    {1.234e2, chars_format::general, "123.4"},
+    {1.234e3, chars_format::general, "1234"},
+    {1.234e4, chars_format::general, "12340"},
+    {1.234e5, chars_format::general, "123400"},
+    {1.234e6, chars_format::general, "1.234e+06"},
+    {1.234e7, chars_format::general, "1.234e+07"},
+    {1.234e8, chars_format::general, "1.234e+08"},
+    {1.234e9, chars_format::general, "1.234e+09"},
+    {1.234e10, chars_format::general, "1.234e+10"},
+
+    // Test the switching logic of the plain overload.
+    // N4762 19.19.2 [charconv.to.chars]/8:
+    // "The conversion specifier is f or e, chosen according to the requirement
+    // for a shortest representation (see above); a tie is resolved in favor of f."
+    {1e-6, chars_format{}, "1e-06"},
+    {1e-5, chars_format{}, "1e-05"},
+    {1e-4, chars_format{}, "1e-04"},
+    {1e-3, chars_format{}, "0.001"},
+    {1e-2, chars_format{}, "0.01"},
+    {1e-1, chars_format{}, "0.1"},
+    {1e0, chars_format{}, "1"},
+    {1e1, chars_format{}, "10"},
+    {1e2, chars_format{}, "100"},
+    {1e3, chars_format{}, "1000"},
+    {1e4, chars_format{}, "10000"},
+    {1e5, chars_format{}, "1e+05"},
+    {1e6, chars_format{}, "1e+06"},
+    {1e7, chars_format{}, "1e+07"},
+    {1.234e-6, chars_format{}, "1.234e-06"},
+    {1.234e-5, chars_format{}, "1.234e-05"},
+    {1.234e-4, chars_format{}, "0.0001234"},
+    {1.234e-3, chars_format{}, "0.001234"},
+    {1.234e-2, chars_format{}, "0.01234"},
+    {1.234e-1, chars_format{}, "0.1234"},
+    {1.234e0, chars_format{}, "1.234"},
+    {1.234e1, chars_format{}, "12.34"},
+    {1.234e2, chars_format{}, "123.4"},
+    {1.234e3, chars_format{}, "1234"},
+    {1.234e4, chars_format{}, "12340"},
+    {1.234e5, chars_format{}, "123400"},
+    {1.234e6, chars_format{}, "1234000"},
+    {1.234e7, chars_format{}, "12340000"},
+    {1.234e8, chars_format{}, "123400000"},
+    {1.234e9, chars_format{}, "1.234e+09"},
+    {1.234e10, chars_format{}, "1.234e+10"},
+
+    // Exact value is 1.9156918820264798304697...e-56, incorrectly rounded by dtoa_milo() (Grisu2).
+    {0x1.e0ffed391517ep-186, chars_format::scientific, "1.9156918820264798e-56"},
+
+    // Exact value is 6.6564021122018745286598...e+264, incorrectly rounded by dtoa_milo() (Grisu2).
+    {0x1.a6c767640cd71p+879, chars_format::scientific, "6.6564021122018745e+264"},
+
+    // Incorrectly handled by dtoa_milo() (Grisu2), which doesn't achieve shortest round-trip.
+    {4.91e-6, chars_format::scientific, "4.91e-06"},
+    {5.547e-6, chars_format::scientific, "5.547e-06"},
+
+    // Test hexfloat corner cases.
+    {0x1.728p+0, chars_format::hex, "1.728p+0"}, // instead of "2.e5p-1"
+    {0x0.0000000000001p-1022, chars_format::hex, "0.0000000000001p-1022"}, // instead of "1p-1074", min subnormal
+    {0x0.fffffffffffffp-1022, chars_format::hex, "0.fffffffffffffp-1022"}, // max subnormal
+    {0x1p-1022, chars_format::hex, "1p-1022"}, // min normal
+    {0x1.fffffffffffffp+1023, chars_format::hex, "1.fffffffffffffp+1023"}, // max normal
+
+    // Test hexfloat exponents.
+    {0x1p-1009, chars_format::hex, "1p-1009"},
+    {0x1p-999, chars_format::hex, "1p-999"},
+    {0x1p-99, chars_format::hex, "1p-99"},
+    {0x1p-9, chars_format::hex, "1p-9"},
+    {0x1p+0, chars_format::hex, "1p+0"},
+    {0x1p+9, chars_format::hex, "1p+9"},
+    {0x1p+99, chars_format::hex, "1p+99"},
+    {0x1p+999, chars_format::hex, "1p+999"},
+    {0x1p+1009, chars_format::hex, "1p+1009"},
+
+    // Test hexfloat hexits.
+    {0x1.01234567p+0, chars_format::hex, "1.01234567p+0"},
+    {0x1.89abcdefp+0, chars_format::hex, "1.89abcdefp+0"},
+
+    // Test hexfloat trimming.
+    {0x1.000000000000ap+0, chars_format::hex, "1.000000000000ap+0"},
+    {0x1.00000000000ap+0, chars_format::hex, "1.00000000000ap+0"},
+    {0x1.0000000000ap+0, chars_format::hex, "1.0000000000ap+0"},
+    {0x1.000000000ap+0, chars_format::hex, "1.000000000ap+0"},
+    {0x1.00000000ap+0, chars_format::hex, "1.00000000ap+0"},
+    {0x1.0000000ap+0, chars_format::hex, "1.0000000ap+0"},
+    {0x1.000000ap+0, chars_format::hex, "1.000000ap+0"},
+    {0x1.00000ap+0, chars_format::hex, "1.00000ap+0"},
+    {0x1.0000ap+0, chars_format::hex, "1.0000ap+0"},
+    {0x1.000ap+0, chars_format::hex, "1.000ap+0"},
+    {0x1.00ap+0, chars_format::hex, "1.00ap+0"},
+    {0x1.0ap+0, chars_format::hex, "1.0ap+0"},
+    {0x1.ap+0, chars_format::hex, "1.ap+0"},
+    {0x1p+0, chars_format::hex, "1p+0"},
+
+    // https://www.exploringbinary.com/the-shortest-decimal-string-that-round-trips-may-not-be-the-nearest/
+    // This is an exhaustive list of anomalous values.
+
+    // Because math, these values have shortest-round-trip decimal representations containing 16 significant digits,
+    // but those decimal digits aren't what would be printed by "%.15e". For ordinary values, shortest-round-trip
+    // behaves as if it can magically pick a precision for "%.*e", finding the smallest precision that round-trips.
+    // (That is, start with the exact decimal representation, and then round it as much as possible.) These anomalous
+    // values demonstrate an exception to that mental model. They aren't being "incorrectly rounded"; instead, having
+    // the shortest output that round-trips is being prioritized. (This differs by 1 in the least significant decimal
+    // digit printed, so it's a very small difference.)
+
+    // N4835 20.19.2 [charconv.to.chars]/2 demands this behavior:
+    // "The functions that take a floating-point value but not a precision parameter ensure that the string
+    // representation consists of the smallest number of characters such that there is at least one digit before the
+    // radix point (if present) and parsing the representation using the corresponding from_chars function recovers
+    // value exactly. [...] If there are several such representations, the representation with the smallest difference
+    // from the floating-point argument value is chosen, resolving any remaining ties using rounding according to
+    // round_to_nearest (17.3.4.1)."
+    {0x1p976, chars_format::scientific, "6.386688990511104e+293"},
+    {0x1p896, chars_format::scientific, "5.282945311356653e+269"},
+    {0x1p863, chars_format::scientific, "6.150157786156811e+259"},
+    {0x1p803, chars_format::scientific, "5.334411546303884e+241"},
+    {0x1p710, chars_format::scientific, "5.386379163185535e+213"},
+    {0x1p594, chars_format::scientific, "6.483618076376552e+178"},
+    {0x1p574, chars_format::scientific, "6.183260036827614e+172"},
+    {0x1p554, chars_format::scientific, "5.896816288783659e+166"},
+    {0x1p544, chars_format::scientific, "5.758609657015292e+163"},
+    {0x1p534, chars_format::scientific, "5.623642243178996e+160"},
+    {0x1p481, chars_format::scientific, "6.243497100631985e+144"},
+    {0x1p405, chars_format::scientific, "8.263199609878108e+121"},
+    {0x1p398, chars_format::scientific, "6.455624695217272e+119"},
+    {0x1p378, chars_format::scientific, "6.156563468186638e+113"},
+    {0x1p345, chars_format::scientific, "7.167183174968974e+103"},
+    {0x1p305, chars_format::scientific, "6.518515124270356e+91"},
+    {0x1p275, chars_format::scientific, "6.070840288205404e+82"},
+    {0x1p182, chars_format::scientific, "6.129982163463556e+54"},
+    {0x1p172, chars_format::scientific, "5.986310706507379e+51"},
+    {0x1p132, chars_format::scientific, "5.444517870735016e+39"},
+    {0x1p122, chars_format::scientific, "5.316911983139664e+36"},
+    {0x1p89, chars_format::scientific, "6.189700196426902e+26"},
+    {0x1p-24, chars_format::scientific, "5.960464477539063e-08"},
+    {0x1p-44, chars_format::scientific, "5.684341886080802e-14"},
+    {0x1p-77, chars_format::scientific, "6.617444900424222e-24"},
+    {0x1p-97, chars_format::scientific, "6.310887241768095e-30"},
+    {0x1p-140, chars_format::scientific, "7.174648137343064e-43"},
+    {0x1p-296, chars_format::scientific, "7.854549544476363e-90"},
+    {0x1p-366, chars_format::scientific, "6.653062250012736e-111"},
+    {0x1p-383, chars_format::scientific, "5.075883674631299e-116"},
+    {0x1p-489, chars_format::scientific, "6.256509672447191e-148"},
+    {0x1p-496, chars_format::scientific, "4.887898181599368e-150"},
+    {0x1p-509, chars_format::scientific, "5.966672584960166e-154"},
+    {0x1p-549, chars_format::scientific, "5.426657103235053e-166"},
+    {0x1p-652, chars_format::scientific, "5.351097043477547e-197"},
+    {0x1p-662, chars_format::scientific, "5.225680706521042e-200"},
+    {0x1p-695, chars_format::scientific, "6.083493012144512e-210"},
+    {0x1p-705, chars_format::scientific, "5.940911144672375e-213"},
+    {0x1p-778, chars_format::scientific, "6.290184345309701e-235"},
+    {0x1p-788, chars_format::scientific, "6.142758149716505e-238"},
+    {0x1p-791, chars_format::scientific, "7.678447687145631e-239"},
+    {0x1p-808, chars_format::scientific, "5.858190679279809e-244"},
+    {0x1p-921, chars_format::scientific, "5.641232424577593e-278"},
+    {0x1p-957, chars_format::scientific, "8.209073602596753e-289"},
+    {0x1p-1007, chars_format::scientific, "7.291122019556398e-304"},
+    {0x1p-1017, chars_format::scientific, "7.120236347223045e-307"},
+
+    // This is an exhaustive list of almost-but-not-quite-anomalous values.
+    {0x1p966, chars_format::scientific, "6.237000967296e+290"},
+    {0x1p956, chars_format::scientific, "6.090821257125e+287"},
+    {0x1p890, chars_format::scientific, "8.25460204899477e+267"},
+    {0x1p740, chars_format::scientific, "5.78358058743443e+222"},
+    {0x1p149, chars_format::scientific, "7.1362384635298e+44"},
+    {0x1p-499, chars_format::scientific, "6.10987272699921e-151"},
+    {0x1p-569, chars_format::scientific, "5.17526350329881e-172"},
+    {0x1p-645, chars_format::scientific, "6.84940421565126e-195"},
+};
+
+#endif // DOUBLE_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_fixed_precision_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_fixed_precision_to_chars_test_cases.hpp
new file mode 100644
index 0000000..3ad92fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_fixed_precision_to_chars_test_cases.hpp
@@ -0,0 +1,1264 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef FLOAT_FIXED_PRECISION_TO_CHARS_TEST_CASES_HPP
+#define FLOAT_FIXED_PRECISION_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr FloatPrecisionToCharsTestCase float_fixed_precision_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0f, chars_format::fixed, 4, "0.0000"},
+    {-0.0f, chars_format::fixed, 4, "-0.0000"},
+    {float_inf, chars_format::fixed, 4, "inf"},
+    {-float_inf, chars_format::fixed, 4, "-inf"},
+    {float_nan, chars_format::fixed, 4, "nan"},
+    {-float_nan, chars_format::fixed, 4, "-nan(ind)"},
+    {float_nan_payload, chars_format::fixed, 4, "nan"},
+    {-float_nan_payload, chars_format::fixed, 4, "-nan"},
+    {1.729f, chars_format::fixed, 4, "1.7290"},
+    {-1.729f, chars_format::fixed, 4, "-1.7290"},
+
+    // Ryu Printf Zero
+    {0.0f, chars_format::fixed, 4, "0.0000"},
+    {0.0f, chars_format::fixed, 3, "0.000"},
+    {0.0f, chars_format::fixed, 2, "0.00"},
+    {0.0f, chars_format::fixed, 1, "0.0"},
+    {0.0f, chars_format::fixed, 0, "0"},
+
+    // Test corner cases.
+    {0x0.000002p-126f, chars_format::fixed, 149, // min subnormal
+        "0."
+        "0000000000000000000000000000000000000000000014012984643248170709237295832899161312802619418765157717570682"
+        "8388979108268586060148663818836212158203125"},
+    {0x0.fffffep-126f, chars_format::fixed, 149, // max subnormal
+        "0."
+        "0000000000000000000000000000000000000117549421069244107548702944484928734882705242874589333385717453057158"
+        "8870475618904265502351336181163787841796875"},
+    {0x1p-126f, chars_format::fixed, 126, // min normal
+        "0."
+        "0000000000000000000000000000000000000117549435082228750796873653722224567781866555677208752150875170627841"
+        "72594547271728515625"},
+    {0x1.fffffep+127f, chars_format::fixed, 0, // max normal
+        "340282346638528859811704183484516925440"},
+
+    // Ryu Printf AllPowersOfTen
+    // These values test every power of ten that's within the range of floats.
+    {1e-44f, chars_format::fixed, 149,
+        "0."
+        "0000000000000000000000000000000000000000000098090892502737194964661070830294129189618335931356104022994779"
+        "8722853757880102421040646731853485107421875"},
+    {1e-43f, chars_format::fixed, 149,
+        "0."
+        "0000000000000000000000000000000000000000000994921909670620120355848004135840453208985978732326197947518481"
+        "5617516687069610270555131137371063232421875"},
+    {1e-42f, chars_format::fixed, 148,
+        "0."
+        "0000000000000000000000000000000000000000010005271035279193886395429224690001177341070264998322610345467546"
+        "973108330377044694614596664905548095703125"},
+    {1e-41f, chars_format::fixed, 144,
+        "0."
+        "0000000000000000000000000000000000000000099996658414218946181117343063568415128159492172308165472584392738"
+        "37549166046301252208650112152099609375"},
+    {1e-40f, chars_format::fixed, 148,
+        "0."
+        "0000000000000000000000000000000000000000999994610111475958152591905227349949604220526961919185041279068749"
+        "432712426283842432894743978977203369140625"},
+    {1e-39f, chars_format::fixed, 146,
+        "0."
+        "0000000000000000000000000000000000000010000002153053332574208756001456831092687456480096866911043660970225"
+        "6827159061458587530069053173065185546875"},
+    {1e-38f, chars_format::fixed, 148,
+        "0."
+        "0000000000000000000000000000000000000099999993504564039245746141539976645128551939195729831580121174560891"
+        "149363239804870318039320409297943115234375"},
+    {1e-37f, chars_format::fixed, 145,
+        "0."
+        "0000000000000000000000000000000000000999999991097578965450144252348949782882164643167775990861842615891642"
+        "849224041356137604452669620513916015625"},
+    {1e-36f, chars_format::fixed, 143,
+        "0."
+        "0000000000000000000000000000000000010000000359391298238442905219082964481594808441361581309103473121178279"
+        "3369735600208514370024204254150390625"},
+    {1e-35f, chars_format::fixed, 139,
+        "0."
+        "0000000000000000000000000000000000100000001800250948048663201408455778204855436374880527489094543362735389"
+        "990803014370612800121307373046875"},
+    {1e-34f, chars_format::fixed, 136,
+        "0."
+        "0000000000000000000000000000000001000000046701102029858885626602539647826036732368569844521988439212112353"
+        "970951517112553119659423828125"},
+    {1e-33f, chars_format::fixed, 131,
+        "0."
+        "0000000000000000000000000000000010000000237422279903610827365881541552040508374727581888171540347443055907"
+        "2061441838741302490234375"},
+    {1e-32f, chars_format::fixed, 130,
+        "0."
+        "0000000000000000000000000000000100000002374222799036108273658815415520405083747275818881715403474430559072"
+        "061441838741302490234375"},
+    {1e-31f, chars_format::fixed, 126,
+        "0."
+        "0000000000000000000000000000000999999979661189834525301187760534009369837919272799809863871978166116605279"
+        "96718883514404296875"},
+    {1e-30f, chars_format::fixed, 118,
+        "0."
+        "0000000000000000000000000000010000000031710768509710513471352647538147514756461109453056224083411507308483"
+        "123779296875"},
+    {1e-29f, chars_format::fixed, 117,
+        "0."
+        "0000000000000000000000000000100000000317107685097105134713526475381475147564611094530562240834115073084831"
+        "23779296875"},
+    {1e-28f, chars_format::fixed, 116,
+        "0."
+        "0000000000000000000000000001000000003171076850971051347135264753814751475646110945305622408341150730848312"
+        "3779296875"},
+    {1e-27f, chars_format::fixed, 112,
+        "0."
+        "0000000000000000000000000010000000272452011558114995103349890361263429573723815479979748488403856754302978"
+        "515625"},
+    {1e-26f, chars_format::fixed, 109,
+        "0."
+        "0000000000000000000000000099999998872660226806678244921543018442779658661034858369021094404160976409912109"
+        "375"},
+    {1e-25f, chars_format::fixed, 104,
+        "0."
+        "00000000000000000000000010000000195414813782625560981110772657866336832199749551364220678806304931640625"},
+    {1e-24f, chars_format::fixed, 103,
+        "0."
+        "0000000000000000000000010000000195414813782625560981110772657866336832199749551364220678806304931640625"},
+    {1e-23f, chars_format::fixed, 99,
+        "0.000000000000000000000009999999998199587477372609628178631337169779413898140774108469486236572265625"},
+    {1e-22f, chars_format::fixed, 97,
+        "0.0000000000000000000001000000031374394956577733179287005745028427128318071481771767139434814453125"},
+    {1e-21f, chars_format::fixed, 88,
+        "0.0000000000000000000009999999682655225388967887463487205224055287544615566730499267578125"},
+    {1e-20f, chars_format::fixed, 87,
+        "0.000000000000000000009999999682655225388967887463487205224055287544615566730499267578125"},
+    {1e-19f, chars_format::fixed, 86,
+        "0.00000000000000000009999999682655225388967887463487205224055287544615566730499267578125"},
+    {1e-18f, chars_format::fixed, 83,
+        "0.00000000000000000100000004581370496574313326554328540396454627625644207000732421875"},
+    {1e-17f, chars_format::fixed, 79,
+        "0.0000000000000000099999998377515902426605765018763349871733225882053375244140625"},
+    {1e-16f, chars_format::fixed, 77,
+        "0.00000000000000010000000168623835263871646450439811815158464014530181884765625"},
+    {1e-15f, chars_format::fixed, 73, "0.0000000000000010000000036274937255387218471014421083964407444000244140625"},
+    {1e-14f, chars_format::fixed, 68, "0.00000000000000999999982451670044181213370393379591405391693115234375"},
+    {1e-13f, chars_format::fixed, 67, "0.0000000000000999999982451670044181213370393379591405391693115234375"},
+    {1e-12f, chars_format::fixed, 61, "0.0000000000009999999960041972002500187954865396022796630859375"},
+    {1e-11f, chars_format::fixed, 60, "0.000000000009999999960041972002500187954865396022796630859375"},
+    {1e-10f, chars_format::fixed, 57, "0.000000000100000001335143196001808973960578441619873046875"},
+    {1e-09f, chars_format::fixed, 53, "0.00000000099999997171806853657471947371959686279296875"},
+    {1e-08f, chars_format::fixed, 50, "0.00000000999999993922529029077850282192230224609375"},
+    {1e-07f, chars_format::fixed, 47, "0.00000010000000116860974230803549289703369140625"},
+    {1e-06f, chars_format::fixed, 43, "0.0000009999999974752427078783512115478515625"},
+    {1e-05f, chars_format::fixed, 38, "0.00000999999974737875163555145263671875"},
+    {1e-04f, chars_format::fixed, 37, "0.0000999999974737875163555145263671875"},
+    {1e-03f, chars_format::fixed, 33, "0.001000000047497451305389404296875"},
+    {1e-02f, chars_format::fixed, 29, "0.00999999977648258209228515625"},
+    {1e-01f, chars_format::fixed, 27, "0.100000001490116119384765625"},
+    {1e+00f, chars_format::fixed, 0, "1"},
+    {1e+01f, chars_format::fixed, 0, "10"},
+    {1e+02f, chars_format::fixed, 0, "100"},
+    {1e+03f, chars_format::fixed, 0, "1000"},
+    {1e+04f, chars_format::fixed, 0, "10000"},
+    {1e+05f, chars_format::fixed, 0, "100000"},
+    {1e+06f, chars_format::fixed, 0, "1000000"},
+    {1e+07f, chars_format::fixed, 0, "10000000"},
+    {1e+08f, chars_format::fixed, 0, "100000000"},
+    {1e+09f, chars_format::fixed, 0, "1000000000"},
+    {1e+10f, chars_format::fixed, 0, "10000000000"},
+    {1e+11f, chars_format::fixed, 0, "99999997952"},
+    {1e+12f, chars_format::fixed, 0, "999999995904"},
+    {1e+13f, chars_format::fixed, 0, "9999999827968"},
+    {1e+14f, chars_format::fixed, 0, "100000000376832"},
+    {1e+15f, chars_format::fixed, 0, "999999986991104"},
+    {1e+16f, chars_format::fixed, 0, "10000000272564224"},
+    {1e+17f, chars_format::fixed, 0, "99999998430674944"},
+    {1e+18f, chars_format::fixed, 0, "999999984306749440"},
+    {1e+19f, chars_format::fixed, 0, "9999999980506447872"},
+    {1e+20f, chars_format::fixed, 0, "100000002004087734272"},
+    {1e+21f, chars_format::fixed, 0, "1000000020040877342720"},
+    {1e+22f, chars_format::fixed, 0, "9999999778196308361216"},
+    {1e+23f, chars_format::fixed, 0, "99999997781963083612160"},
+    {1e+24f, chars_format::fixed, 0, "1000000013848427855085568"},
+    {1e+25f, chars_format::fixed, 0, "9999999562023526247432192"},
+    {1e+26f, chars_format::fixed, 0, "100000002537764290115403776"},
+    {1e+27f, chars_format::fixed, 0, "999999988484154753734934528"},
+    {1e+28f, chars_format::fixed, 0, "9999999442119689768320106496"},
+    {1e+29f, chars_format::fixed, 0, "100000001504746621987668885504"},
+    {1e+30f, chars_format::fixed, 0, "1000000015047466219876688855040"},
+    {1e+31f, chars_format::fixed, 0, "9999999848243207295109594873856"},
+    {1e+32f, chars_format::fixed, 0, "100000003318135351409612647563264"},
+    {1e+33f, chars_format::fixed, 0, "999999994495727286427992885035008"},
+    {1e+34f, chars_format::fixed, 0, "9999999790214767953607394487959552"},
+    {1e+35f, chars_format::fixed, 0, "100000004091847875962975319375216640"},
+    {1e+36f, chars_format::fixed, 0, "999999961690316245365415600208216064"},
+    {1e+37f, chars_format::fixed, 0, "9999999933815812510711506376257961984"},
+    {1e+38f, chars_format::fixed, 0, "99999996802856924650656260769173209088"},
+
+    // Ryu Printf RoundToEven
+    {0.125f, chars_format::fixed, 3, "0.125"},
+    {0.125f, chars_format::fixed, 2, "0.12"},
+    {0.375f, chars_format::fixed, 3, "0.375"},
+    {0.375f, chars_format::fixed, 2, "0.38"},
+
+    // Ryu Printf RoundToEvenInteger
+    {2.5f, chars_format::fixed, 1, "2.5"},
+    {2.5f, chars_format::fixed, 0, "2"},
+    {3.5f, chars_format::fixed, 1, "3.5"},
+    {3.5f, chars_format::fixed, 0, "4"},
+
+    // Ryu Printf NonRoundToEvenScenarios
+    {0.748046875f, chars_format::fixed, 3, "0.748"},
+    {0.748046875f, chars_format::fixed, 2, "0.75"},
+    {0.748046875f, chars_format::fixed, 1, "0.7"}, // 0.75 would round to "0.8", but this is smaller
+
+    {0.2509765625f, chars_format::fixed, 3, "0.251"},
+    {0.2509765625f, chars_format::fixed, 2, "0.25"},
+    {0.2509765625f, chars_format::fixed, 1, "0.3"}, // 0.25 would round to "0.2", but this is larger
+
+    {0x1.000002p-2f, chars_format::fixed, 25, "0.2500000298023223876953125"},
+    {0x1.000002p-2f, chars_format::fixed, 3, "0.250"},
+    {0x1.000002p-2f, chars_format::fixed, 2, "0.25"},
+    {0x1.000002p-2f, chars_format::fixed, 1, "0.3"}, // 0.25 would round to "0.2", but this is larger (again)
+
+    // More rounding tests.
+    {9.5f, chars_format::fixed, 1, "9.5"},
+    {9.5f, chars_format::fixed, 0, "10"},
+    {10.5f, chars_format::fixed, 1, "10.5"},
+    {10.5f, chars_format::fixed, 0, "10"},
+
+    {1.241f, chars_format::fixed, 3, "1.241"},
+    {1.241f, chars_format::fixed, 1, "1.2"},
+    {1.251f, chars_format::fixed, 3, "1.251"},
+    {1.251f, chars_format::fixed, 1, "1.3"},
+    {1.261f, chars_format::fixed, 3, "1.261"},
+    {1.261f, chars_format::fixed, 1, "1.3"},
+    {1.341f, chars_format::fixed, 3, "1.341"},
+    {1.341f, chars_format::fixed, 1, "1.3"},
+    {1.351f, chars_format::fixed, 3, "1.351"},
+    {1.351f, chars_format::fixed, 1, "1.4"},
+    {1.361f, chars_format::fixed, 3, "1.361"},
+    {1.361f, chars_format::fixed, 1, "1.4"},
+
+    {2.41f, chars_format::fixed, 2, "2.41"},
+    {2.41f, chars_format::fixed, 0, "2"},
+    {2.51f, chars_format::fixed, 2, "2.51"},
+    {2.51f, chars_format::fixed, 0, "3"},
+    {2.61f, chars_format::fixed, 2, "2.61"},
+    {2.61f, chars_format::fixed, 0, "3"},
+    {3.41f, chars_format::fixed, 2, "3.41"},
+    {3.41f, chars_format::fixed, 0, "3"},
+    {3.51f, chars_format::fixed, 2, "3.51"},
+    {3.51f, chars_format::fixed, 0, "4"},
+    {3.61f, chars_format::fixed, 2, "3.61"},
+    {3.61f, chars_format::fixed, 0, "4"},
+
+    // Ryu Printf VaryingPrecision
+    {1.142857f, chars_format::fixed, 28, "1.1428569555282592773437500000"},
+    {1.142857f, chars_format::fixed, 27, "1.142856955528259277343750000"},
+    {1.142857f, chars_format::fixed, 26, "1.14285695552825927734375000"},
+    {1.142857f, chars_format::fixed, 25, "1.1428569555282592773437500"},
+    {1.142857f, chars_format::fixed, 24, "1.142856955528259277343750"},
+    {1.142857f, chars_format::fixed, 23, "1.14285695552825927734375"},
+    {1.142857f, chars_format::fixed, 22, "1.1428569555282592773438"},
+    {1.142857f, chars_format::fixed, 21, "1.142856955528259277344"},
+    {1.142857f, chars_format::fixed, 20, "1.14285695552825927734"},
+    {1.142857f, chars_format::fixed, 19, "1.1428569555282592773"},
+    {1.142857f, chars_format::fixed, 18, "1.142856955528259277"},
+    {1.142857f, chars_format::fixed, 17, "1.14285695552825928"},
+    {1.142857f, chars_format::fixed, 16, "1.1428569555282593"},
+    {1.142857f, chars_format::fixed, 15, "1.142856955528259"},
+    {1.142857f, chars_format::fixed, 14, "1.14285695552826"},
+    {1.142857f, chars_format::fixed, 13, "1.1428569555283"},
+    {1.142857f, chars_format::fixed, 12, "1.142856955528"},
+    {1.142857f, chars_format::fixed, 11, "1.14285695553"},
+    {1.142857f, chars_format::fixed, 10, "1.1428569555"},
+    {1.142857f, chars_format::fixed, 9, "1.142856956"},
+    {1.142857f, chars_format::fixed, 8, "1.14285696"},
+    {1.142857f, chars_format::fixed, 7, "1.1428570"},
+    {1.142857f, chars_format::fixed, 6, "1.142857"},
+    {1.142857f, chars_format::fixed, 5, "1.14286"},
+    {1.142857f, chars_format::fixed, 4, "1.1429"},
+    {1.142857f, chars_format::fixed, 3, "1.143"},
+    {1.142857f, chars_format::fixed, 2, "1.14"},
+    {1.142857f, chars_format::fixed, 1, "1.1"},
+    {1.142857f, chars_format::fixed, 0, "1"},
+
+    // Negative precision requests 6 digits of precision.
+    {1.142857f, chars_format::fixed, -1, "1.142857"},
+    {1.142857f, chars_format::fixed, -2, "1.142857"},
+    {1.142857f, chars_format::fixed, -3, "1.142857"},
+
+    // Ryu Printf Carrying
+    {0.0009f, chars_format::fixed, 4, "0.0009"},
+    {0.0009f, chars_format::fixed, 3, "0.001"},
+    {0.0029f, chars_format::fixed, 4, "0.0029"},
+    {0.0029f, chars_format::fixed, 3, "0.003"},
+    {0.0099f, chars_format::fixed, 4, "0.0099"},
+    {0.0099f, chars_format::fixed, 3, "0.010"},
+    {0.0299f, chars_format::fixed, 4, "0.0299"},
+    {0.0299f, chars_format::fixed, 3, "0.030"},
+    {0.0999f, chars_format::fixed, 4, "0.0999"},
+    {0.0999f, chars_format::fixed, 3, "0.100"},
+    {0.2999f, chars_format::fixed, 4, "0.2999"},
+    {0.2999f, chars_format::fixed, 3, "0.300"},
+    {0.9999f, chars_format::fixed, 4, "0.9999"},
+    {0.9999f, chars_format::fixed, 3, "1.000"},
+    {2.9999f, chars_format::fixed, 4, "2.9999"},
+    {2.9999f, chars_format::fixed, 3, "3.000"},
+    {9.9999f, chars_format::fixed, 4, "9.9999"},
+    {9.9999f, chars_format::fixed, 3, "10.000"},
+    {29.9999f, chars_format::fixed, 4, "29.9999"},
+    {29.9999f, chars_format::fixed, 3, "30.000"},
+    {99.9999f, chars_format::fixed, 4, "99.9999"},
+    {99.9999f, chars_format::fixed, 3, "100.000"},
+    {299.9999f, chars_format::fixed, 4, "299.9999"},
+    {299.9999f, chars_format::fixed, 3, "300.000"},
+
+    {0.09f, chars_format::fixed, 2, "0.09"},
+    {0.09f, chars_format::fixed, 1, "0.1"},
+    {0.29f, chars_format::fixed, 2, "0.29"},
+    {0.29f, chars_format::fixed, 1, "0.3"},
+    {0.99f, chars_format::fixed, 2, "0.99"},
+    {0.99f, chars_format::fixed, 1, "1.0"},
+    {2.99f, chars_format::fixed, 2, "2.99"},
+    {2.99f, chars_format::fixed, 1, "3.0"},
+    {9.99f, chars_format::fixed, 2, "9.99"},
+    {9.99f, chars_format::fixed, 1, "10.0"},
+    {29.99f, chars_format::fixed, 2, "29.99"},
+    {29.99f, chars_format::fixed, 1, "30.0"},
+    {99.99f, chars_format::fixed, 2, "99.99"},
+    {99.99f, chars_format::fixed, 1, "100.0"},
+    {299.99f, chars_format::fixed, 2, "299.99"},
+    {299.99f, chars_format::fixed, 1, "300.0"},
+
+    {0.9f, chars_format::fixed, 1, "0.9"},
+    {0.9f, chars_format::fixed, 0, "1"},
+    {2.9f, chars_format::fixed, 1, "2.9"},
+    {2.9f, chars_format::fixed, 0, "3"},
+    {9.9f, chars_format::fixed, 1, "9.9"},
+    {9.9f, chars_format::fixed, 0, "10"},
+    {29.9f, chars_format::fixed, 1, "29.9"},
+    {29.9f, chars_format::fixed, 0, "30"},
+    {99.9f, chars_format::fixed, 1, "99.9"},
+    {99.9f, chars_format::fixed, 0, "100"},
+    {299.9f, chars_format::fixed, 1, "299.9"},
+    {299.9f, chars_format::fixed, 0, "300"},
+
+    // Ryu Printf RoundingResultZero
+    {0.004f, chars_format::fixed, 3, "0.004"},
+    {0.004f, chars_format::fixed, 2, "0.00"},
+    {0.4f, chars_format::fixed, 1, "0.4"},
+    {0.4f, chars_format::fixed, 0, "0"},
+    {0.5f, chars_format::fixed, 1, "0.5"},
+    {0.5f, chars_format::fixed, 0, "0"},
+
+    // Ryu Printf AllBinaryExponents
+    // These values test every binary exponent.
+    // The mantissas were randomly generated.
+    {0x0.bafab0p-126f, chars_format::fixed, 146,
+        "0."
+        "0000000000000000000000000000000000000085856660078164374052571520381239855817217629811131320365461649230225"
+        "8101698697601023013703525066375732421875"},
+    {0x1.2c4906p-126f, chars_format::fixed, 149,
+        "0."
+        "0000000000000000000000000000000000000137884223604447257991705553959882023830165636017936204355992973751997"
+        "2013648494879589634365402162075042724609375"},
+    {0x1.da6c8cp-125f, chars_format::fixed, 147,
+        "0."
+        "0000000000000000000000000000000000000435689644606144922962341034916717454461784748180572306511365470365953"
+        "68653788540314053534530103206634521484375"},
+    {0x1.094fd8p-124f, chars_format::fixed, 145,
+        "0."
+        "0000000000000000000000000000000000000487300980449569406486898593097235018686258578182781609022211792895361"
+        "293087574949822737835347652435302734375"},
+    {0x1.1fba2ap-123f, chars_format::fixed, 146,
+        "0."
+        "0000000000000000000000000000000000001056942819182250793988103906000418825212997860175004035399177620979400"
+        "2661102041429330711252987384796142578125"},
+    {0x1.05c066p-122f, chars_format::fixed, 145,
+        "0."
+        "0000000000000000000000000000000000001923046724143804860574903666495417184272104431219282642086921032167044"
+        "776084452450959361158311367034912109375"},
+    {0x1.aa97aep-121f, chars_format::fixed, 144,
+        "0."
+        "0000000000000000000000000000000000006268213405227838203431757007863521825324812101203856469220875149766722"
+        "40063493291017948649823665618896484375"},
+    {0x1.dd39a8p-120f, chars_format::fixed, 141,
+        "0."
+        "0000000000000000000000000000000000014024388746462477508516570165943074639858849697711014853285027082288594"
+        "08023936339304782450199127197265625"},
+    {0x1.d47ee4p-119f, chars_format::fixed, 141,
+        "0."
+        "0000000000000000000000000000000000027535700468003209195416842287342046227746219166975594715835834154840644"
+        "49429979504202492535114288330078125"},
+    {0x1.3d3c36p-118f, chars_format::fixed, 141,
+        "0."
+        "0000000000000000000000000000000000037290818427663765497432907740725131368928567215367442737882934305701509"
+        "99159295679419301450252532958984375"},
+    {0x1.1661f4p-117f, chars_format::fixed, 139,
+        "0."
+        "0000000000000000000000000000000000065447441644065192772010189083715139205202243608571574700187600294454259"
+        "852727773250080645084381103515625"},
+    {0x1.b68df4p-116f, chars_format::fixed, 138,
+        "0."
+        "0000000000000000000000000000000000206207336977375818320192367186588031181149116107584831794039036470533865"
+        "49714559805579483509063720703125"},
+    {0x1.d99cbcp-115f, chars_format::fixed, 137,
+        "0."
+        "0000000000000000000000000000000000445382813514879099167344241437088992337862296399353856123689687079858501"
+        "3062620419077575206756591796875"},
+    {0x1.fd046ep-114f, chars_format::fixed, 137,
+        "0."
+        "0000000000000000000000000000000000957355143513621934625335631305232671680527244248210039119495722709229923"
+        "4527672524563968181610107421875"},
+    {0x1.89834cp-113f, chars_format::fixed, 135,
+        "0."
+        "0000000000000000000000000000000001480230929779647770398330978023641189899501899250006144284413575618053471"
+        "31667076610028743743896484375"},
+    {0x1.44f9f6p-112f, chars_format::fixed, 135,
+        "0."
+        "0000000000000000000000000000000002444850777614032698558632186222413041911856813461843446368257012912827974"
+        "56005937419831752777099609375"},
+    {0x1.610156p-111f, chars_format::fixed, 134,
+        "0."
+        "0000000000000000000000000000000005311432194104638958491823018983379637847618995394862767718806989547530861"
+        "2731168977916240692138671875"},
+    {0x1.1c4ce0p-110f, chars_format::fixed, 129,
+        "0."
+        "0000000000000000000000000000000008555350741040305433153411782350510989661057055423470539198826934068620175"
+        "82170665264129638671875"},
+    {0x1.c8846ap-109f, chars_format::fixed, 132,
+        "0."
+        "0000000000000000000000000000000027475632104005746766942313987412370292282555616009485081234833825369889837"
+        "02030964195728302001953125"},
+    {0x1.49aaa6p-108f, chars_format::fixed, 131,
+        "0."
+        "0000000000000000000000000000000039682172991165697309827799919973022713504068615668209476284727932338114442"
+        "2455690801143646240234375"},
+    {0x1.f5603cp-107f, chars_format::fixed, 129,
+        "0."
+        "0000000000000000000000000000000120701861138584576157150361758540470962569680234040676814963322094342856871"
+        "66266143321990966796875"},
+    {0x1.b7bbf8p-106f, chars_format::fixed, 127,
+        "0."
+        "0000000000000000000000000000000211724341322508937840915176712265363597160619557838059749677039889093066449"
+        "277102947235107421875"},
+    {0x1.6d305cp-105f, chars_format::fixed, 127,
+        "0."
+        "0000000000000000000000000000000351664122601460292174574136500884378151845989294218826175242309517443572985"
+        "939681529998779296875"},
+    {0x1.dd9944p-104f, chars_format::fixed, 126,
+        "0."
+        "0000000000000000000000000000000919821625881433083724268012282371631728046815243377909779298740033937065163"
+        "62726688385009765625"},
+    {0x1.0f4254p-103f, chars_format::fixed, 125,
+        "0."
+        "0000000000000000000000000000001044852024561729954450605502201132293228119140390439904125807757395705266389"
+        "9958133697509765625"},
+    {0x1.049450p-102f, chars_format::fixed, 122,
+        "0."
+        "0000000000000000000000000000002007430259113927348388472759172849833669167623529955984951200775867619086056"
+        "9477081298828125"},
+    {0x1.28d030p-101f, chars_format::fixed, 121,
+        "0."
+        "0000000000000000000000000000004573131937693259427041496124538667251427229422876784281637441154089174233376"
+        "979827880859375"},
+    {0x1.28a2bep-100f, chars_format::fixed, 123,
+        "0."
+        "0000000000000000000000000000009140793594875532256935908936727717060368161903718573976784789181238011224195"
+        "36113739013671875"},
+    {0x1.e674d2p-99f, chars_format::fixed, 122,
+        "0."
+        "0000000000000000000000000000029980185962354845050897219390986524441297232842758378051906120731473492924124"
+        "0024566650390625"},
+    {0x1.227314p-98f, chars_format::fixed, 120,
+        "0."
+        "0000000000000000000000000000035800667869547456776694564979794758804336827210561614021067100566142471507191"
+        "65802001953125"},
+    {0x1.735b6cp-97f, chars_format::fixed, 119,
+        "0."
+        "0000000000000000000000000000091546597262378319603799081529207906703837108826262575211885064163652714341878"
+        "8909912109375"},
+    {0x1.ef60b4p-96f, chars_format::fixed, 118,
+        "0."
+        "0000000000000000000000000000244240085996903849216356078751341022854748745722804070812372856380534358322620"
+        "391845703125"},
+    {0x1.f58d34p-95f, chars_format::fixed, 117,
+        "0."
+        "0000000000000000000000000000494568036548015750964222103779193000963396430755616983709899159293854609131813"
+        "04931640625"},
+    {0x1.a9fa8ap-94f, chars_format::fixed, 117,
+        "0."
+        "0000000000000000000000000000840094794528154864080325730507983995095850536733231295194457288744160905480384"
+        "82666015625"},
+    {0x1.2ebd9ap-93f, chars_format::fixed, 116,
+        "0."
+        "0000000000000000000000000001194101241497498690354073604120044306874891791320908440710013564967084676027297"
+        "9736328125"},
+    {0x1.1c25bep-92f, chars_format::fixed, 115,
+        "0."
+        "0000000000000000000000000002241527991772840369420073304083191365256388471842441401093992681126110255718231"
+        "201171875"},
+    {0x1.80d526p-91f, chars_format::fixed, 114,
+        "0."
+        "0000000000000000000000000006071588038765549904506806942923684386898144178454361785668425000039860606193542"
+        "48046875"},
+    {0x1.16cdd0p-90f, chars_format::fixed, 110,
+        "0."
+        "0000000000000000000000000008797501615285119946834874987404311536605839433322628906353202182799577713012695"
+        "3125"},
+    {0x1.be00c0p-89f, chars_format::fixed, 107,
+        "0."
+        "0000000000000000000000000028146741987560362391732368583172300827762585262448169487470295280218124389648437"
+        "5"},
+    {0x1.dbe376p-88f, chars_format::fixed, 111,
+        "0."
+        "0000000000000000000000000060065575697458565955014820557088473772922162727261330417150020366534590721130371"
+        "09375"},
+    {0x1.75b358p-87f, chars_format::fixed, 108,
+        "0."
+        "0000000000000000000000000094335284238393382638914933670753282739891362740358715655020205304026603698730468"
+        "75"},
+    {0x1.5e56fap-86f, chars_format::fixed, 109,
+        "0."
+        "0000000000000000000000000176876373794073549186243776242822499413496518949617808402763330377638339996337890"
+        "625"},
+    {0x1.1542e6p-85f, chars_format::fixed, 108,
+        "0."
+        "0000000000000000000000000279962390364982552136537973532622361314990341862873890477203531190752983093261718"
+        "75"},
+    {0x1.37b7a6p-84f, chars_format::fixed, 107,
+        "0."
+        "0000000000000000000000000629508229027247503098930994487426088983880040350626927647681441158056259155273437"
+        "5"},
+    {0x1.31f62ap-83f, chars_format::fixed, 106,
+        "0."
+        "000000000000000000000000123576897369666466985856753932114511864998745993560191891447175294160842895507812"
+        "5"},
+    {0x1.ac3560p-82f, chars_format::fixed, 101,
+        "0.00000000000000000000000034590406845628797200186450581230516131137076030199750675819814205169677734375"},
+    {0x1.a7db5cp-81f, chars_format::fixed, 103,
+        "0."
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+    {0x1.2d6594p+105f, chars_format::fixed, 0, "47758227647613648865431576903680"},
+    {0x1.ce43bap+106f, chars_format::fixed, 0, "146497485749802409635393442938880"},
+    {0x1.b3ea00p+107f, chars_format::fixed, 0, "276293361488025452794185737306112"},
+    {0x1.03a052p+108f, chars_format::fixed, 0, "329115373194929392757058784198656"},
+    {0x1.6f59e0p+109f, chars_format::fixed, 0, "931345619455766569116232623063040"},
+    {0x1.05adacp+110f, chars_format::fixed, 0, "1326867152522435745601434087849984"},
+    {0x1.2cdef0p+111f, chars_format::fixed, 0, "3051192904788012466473218045116416"},
+    {0x1.e81552p+112f, chars_format::fixed, 0, "9899505055765620068271358482579456"},
+    {0x1.bfa8f4p+113f, chars_format::fixed, 0, "18159245876954178992833811110166528"},
+    {0x1.a14810p+114f, chars_format::fixed, 0, "33853896736735722962455354188759040"},
+    {0x1.f18b10p+115f, chars_format::fixed, 0, "80731001914916160681187088757948416"},
+    {0x1.8d6e30p+116f, chars_format::fixed, 0, "128973545052908058560090358153216000"},
+    {0x1.9480c2p+117f, chars_format::fixed, 0, "262537431192608192877759864086986752"},
+    {0x1.60975cp+118f, chars_format::fixed, 0, "457689606761340509948952337218273280"},
+    {0x1.ab1bb2p+119f, chars_format::fixed, 0, "1108836243133298765768030079592431616"},
+    {0x1.6a0c80p+120f, chars_format::fixed, 0, "1879864992909653247408339011818749952"},
+    {0x1.2cac2cp+121f, chars_format::fixed, 0, "3122362236102854007005843883842076672"},
+    {0x1.0baaf6p+122f, chars_format::fixed, 0, "5559243043957593079267046257728684032"},
+    {0x1.098282p+123f, chars_format::fixed, 0, "11028845443370647144636654644992409600"},
+    {0x1.122f8ap+124f, chars_format::fixed, 0, "22778456735621461875293910785310326784"},
+    {0x1.57f4c6p+125f, chars_format::fixed, 0, "57149517363101270672263900542030315520"},
+    {0x1.05e028p+126f, chars_format::fixed, 0, "87023098173139747570875357950241669120"},
+    {0x1.9d8424p+127f, chars_format::fixed, 0, "274828637805621292108186801756142829568"},
+
+    // Test the maximum mantissa, which generates the most digits for each exponent.
+    {0x0.fffffep-126f, chars_format::fixed, 149,
+        "0."
+        "0000000000000000000000000000000000000117549421069244107548702944484928734882705242874589333385717453057158"
+        "8870475618904265502351336181163787841796875"},
+    {0x1.fffffep-126f, chars_format::fixed, 149,
+        "0."
+        "0000000000000000000000000000000000000235098856151472858345576598207153302664571798551798085536592623685000"
+        "6129930346077117064851336181163787841796875"},
+    {0x1.fffffep-125f, chars_format::fixed, 148,
+        "0."
+        "0000000000000000000000000000000000000470197712302945716691153196414306605329143597103596171073185247370001"
+        "225986069215423412970267236232757568359375"},
+    {0x1.fffffep-124f, chars_format::fixed, 147,
+        "0."
+        "0000000000000000000000000000000000000940395424605891433382306392828613210658287194207192342146370494740002"
+        "45197213843084682594053447246551513671875"},
+    {0x1.fffffep-123f, chars_format::fixed, 146,
+        "0."
+        "0000000000000000000000000000000000001880790849211782866764612785657226421316574388414384684292740989480004"
+        "9039442768616936518810689449310302734375"},
+    {0x1.fffffep-122f, chars_format::fixed, 145,
+        "0."
+        "0000000000000000000000000000000000003761581698423565733529225571314452842633148776828769368585481978960009"
+        "807888553723387303762137889862060546875"},
+    {0x1.fffffep-121f, chars_format::fixed, 144,
+        "0."
+        "0000000000000000000000000000000000007523163396847131467058451142628905685266297553657538737170963957920019"
+        "61577710744677460752427577972412109375"},
+    {0x1.fffffep-120f, chars_format::fixed, 143,
+        "0."
+        "0000000000000000000000000000000000015046326793694262934116902285257811370532595107315077474341927915840039"
+        "2315542148935492150485515594482421875"},
+    {0x1.fffffep-119f, chars_format::fixed, 142,
+        "0."
+        "0000000000000000000000000000000000030092653587388525868233804570515622741065190214630154948683855831680078"
+        "463108429787098430097103118896484375"},
+    {0x1.fffffep-118f, chars_format::fixed, 141,
+        "0."
+        "0000000000000000000000000000000000060185307174777051736467609141031245482130380429260309897367711663360156"
+        "92621685957419686019420623779296875"},
+    {0x1.fffffep-117f, chars_format::fixed, 140,
+        "0."
+        "0000000000000000000000000000000000120370614349554103472935218282062490964260760858520619794735423326720313"
+        "8524337191483937203884124755859375"},
+    {0x1.fffffep-116f, chars_format::fixed, 139,
+        "0."
+        "0000000000000000000000000000000000240741228699108206945870436564124981928521521717041239589470846653440627"
+        "704867438296787440776824951171875"},
+    {0x1.fffffep-115f, chars_format::fixed, 138,
+        "0."
+        "0000000000000000000000000000000000481482457398216413891740873128249963857043043434082479178941693306881255"
+        "40973487659357488155364990234375"},
+    {0x1.fffffep-114f, chars_format::fixed, 137,
+        "0."
+        "0000000000000000000000000000000000962964914796432827783481746256499927714086086868164958357883386613762510"
+        "8194697531871497631072998046875"},
+    {0x1.fffffep-113f, chars_format::fixed, 136,
+        "0."
+        "0000000000000000000000000000000001925929829592865655566963492512999855428172173736329916715766773227525021"
+        "638939506374299526214599609375"},
+    {0x1.fffffep-112f, chars_format::fixed, 135,
+        "0."
+        "0000000000000000000000000000000003851859659185731311133926985025999710856344347472659833431533546455050043"
+        "27787901274859905242919921875"},
+    {0x1.fffffep-111f, chars_format::fixed, 134,
+        "0."
+        "0000000000000000000000000000000007703719318371462622267853970051999421712688694945319666863067092910100086"
+        "5557580254971981048583984375"},
+    {0x1.fffffep-110f, chars_format::fixed, 133,
+        "0."
+        "0000000000000000000000000000000015407438636742925244535707940103998843425377389890639333726134185820200173"
+        "111516050994396209716796875"},
+    {0x1.fffffep-109f, chars_format::fixed, 132,
+        "0."
+        "0000000000000000000000000000000030814877273485850489071415880207997686850754779781278667452268371640400346"
+        "22303210198879241943359375"},
+    {0x1.fffffep-108f, chars_format::fixed, 131,
+        "0."
+        "0000000000000000000000000000000061629754546971700978142831760415995373701509559562557334904536743280800692"
+        "4460642039775848388671875"},
+    {0x1.fffffep-107f, chars_format::fixed, 130,
+        "0."
+        "0000000000000000000000000000000123259509093943401956285663520831990747403019119125114669809073486561601384"
+        "892128407955169677734375"},
+    {0x1.fffffep-106f, chars_format::fixed, 129,
+        "0."
+        "0000000000000000000000000000000246519018187886803912571327041663981494806038238250229339618146973123202769"
+        "78425681591033935546875"},
+    {0x1.fffffep-105f, chars_format::fixed, 128,
+        "0."
+        "0000000000000000000000000000000493038036375773607825142654083327962989612076476500458679236293946246405539"
+        "5685136318206787109375"},
+    {0x1.fffffep-104f, chars_format::fixed, 127,
+        "0."
+        "0000000000000000000000000000000986076072751547215650285308166655925979224152953000917358472587892492811079"
+        "137027263641357421875"},
+    {0x1.fffffep-103f, chars_format::fixed, 126,
+        "0."
+        "0000000000000000000000000000001972152145503094431300570616333311851958448305906001834716945175784985622158"
+        "27405452728271484375"},
+    {0x1.fffffep-102f, chars_format::fixed, 125,
+        "0."
+        "0000000000000000000000000000003944304291006188862601141232666623703916896611812003669433890351569971244316"
+        "5481090545654296875"},
+    {0x1.fffffep-101f, chars_format::fixed, 124,
+        "0."
+        "0000000000000000000000000000007888608582012377725202282465333247407833793223624007338867780703139942488633"
+        "096218109130859375"},
+    {0x1.fffffep-100f, chars_format::fixed, 123,
+        "0."
+        "0000000000000000000000000000015777217164024755450404564930666494815667586447248014677735561406279884977266"
+        "19243621826171875"},
+    {0x1.fffffep-99f, chars_format::fixed, 122,
+        "0."
+        "0000000000000000000000000000031554434328049510900809129861332989631335172894496029355471122812559769954532"
+        "3848724365234375"},
+    {0x1.fffffep-98f, chars_format::fixed, 121,
+        "0."
+        "0000000000000000000000000000063108868656099021801618259722665979262670345788992058710942245625119539909064"
+        "769744873046875"},
+    {0x1.fffffep-97f, chars_format::fixed, 120,
+        "0."
+        "0000000000000000000000000000126217737312198043603236519445331958525340691577984117421884491250239079818129"
+        "53948974609375"},
+    {0x1.fffffep-96f, chars_format::fixed, 119,
+        "0."
+        "0000000000000000000000000000252435474624396087206473038890663917050681383155968234843768982500478159636259"
+        "0789794921875"},
+    {0x1.fffffep-95f, chars_format::fixed, 118,
+        "0."
+        "0000000000000000000000000000504870949248792174412946077781327834101362766311936469687537965000956319272518"
+        "157958984375"},
+    {0x1.fffffep-94f, chars_format::fixed, 117,
+        "0."
+        "0000000000000000000000000001009741898497584348825892155562655668202725532623872939375075930001912638545036"
+        "31591796875"},
+    {0x1.fffffep-93f, chars_format::fixed, 116,
+        "0."
+        "0000000000000000000000000002019483796995168697651784311125311336405451065247745878750151860003825277090072"
+        "6318359375"},
+    {0x1.fffffep-92f, chars_format::fixed, 115,
+        "0."
+        "0000000000000000000000000004038967593990337395303568622250622672810902130495491757500303720007650554180145"
+        "263671875"},
+    {0x1.fffffep-91f, chars_format::fixed, 114,
+        "0."
+        "0000000000000000000000000008077935187980674790607137244501245345621804260990983515000607440015301108360290"
+        "52734375"},
+    {0x1.fffffep-90f, chars_format::fixed, 113,
+        "0."
+        "0000000000000000000000000016155870375961349581214274489002490691243608521981967030001214880030602216720581"
+        "0546875"},
+    {0x1.fffffep-89f, chars_format::fixed, 112,
+        "0."
+        "0000000000000000000000000032311740751922699162428548978004981382487217043963934060002429760061204433441162"
+        "109375"},
+    {0x1.fffffep-88f, chars_format::fixed, 111,
+        "0."
+        "0000000000000000000000000064623481503845398324857097956009962764974434087927868120004859520122408866882324"
+        "21875"},
+    {0x1.fffffep-87f, chars_format::fixed, 110,
+        "0."
+        "0000000000000000000000000129246963007690796649714195912019925529948868175855736240009719040244817733764648"
+        "4375"},
+    {0x1.fffffep-86f, chars_format::fixed, 109,
+        "0."
+        "0000000000000000000000000258493926015381593299428391824039851059897736351711472480019438080489635467529296"
+        "875"},
+    {0x1.fffffep-85f, chars_format::fixed, 108,
+        "0."
+        "0000000000000000000000000516987852030763186598856783648079702119795472703422944960038876160979270935058593"
+        "75"},
+    {0x1.fffffep-84f, chars_format::fixed, 107,
+        "0."
+        "0000000000000000000000001033975704061526373197713567296159404239590945406845889920077752321958541870117187"
+        "5"},
+    {0x1.fffffep-83f, chars_format::fixed, 106,
+        "0."
+        "000000000000000000000000206795140812305274639542713459231880847918189081369177984015550464391708374023437"
+        "5"},
+    {0x1.fffffep-82f, chars_format::fixed, 105,
+        "0."
+        "00000000000000000000000041359028162461054927908542691846376169583637816273835596803110092878341674804687"
+        "5"},
+    {0x1.fffffep-81f, chars_format::fixed, 104,
+        "0."
+        "00000000000000000000000082718056324922109855817085383692752339167275632547671193606220185756683349609375"},
+    {0x1.fffffep-80f, chars_format::fixed, 103,
+        "0."
+        "0000000000000000000000016543611264984421971163417076738550467833455126509534238721244037151336669921875"},
+    {0x1.fffffep-79f, chars_format::fixed, 102,
+        "0.000000000000000000000003308722252996884394232683415347710093566691025301906847744248807430267333984375"},
+    {0x1.fffffep-78f, chars_format::fixed, 101,
+        "0.00000000000000000000000661744450599376878846536683069542018713338205060381369548849761486053466796875"},
+    {0x1.fffffep-77f, chars_format::fixed, 100,
+        "0.0000000000000000000000132348890119875375769307336613908403742667641012076273909769952297210693359375"},
+    {0x1.fffffep-76f, chars_format::fixed, 99,
+        "0.000000000000000000000026469778023975075153861467322781680748533528202415254781953990459442138671875"},
+    {0x1.fffffep-75f, chars_format::fixed, 98,
+        "0.00000000000000000000005293955604795015030772293464556336149706705640483050956390798091888427734375"},
+    {0x1.fffffep-74f, chars_format::fixed, 97,
+        "0.0000000000000000000001058791120959003006154458692911267229941341128096610191278159618377685546875"},
+    {0x1.fffffep-73f, chars_format::fixed, 96,
+        "0.000000000000000000000211758224191800601230891738582253445988268225619322038255631923675537109375"},
+    {0x1.fffffep-72f, chars_format::fixed, 95,
+        "0.00000000000000000000042351644838360120246178347716450689197653645123864407651126384735107421875"},
+    {0x1.fffffep-71f, chars_format::fixed, 94,
+        "0.0000000000000000000008470328967672024049235669543290137839530729024772881530225276947021484375"},
+    {0x1.fffffep-70f, chars_format::fixed, 93,
+        "0.000000000000000000001694065793534404809847133908658027567906145804954576306045055389404296875"},
+    {0x1.fffffep-69f, chars_format::fixed, 92,
+        "0.00000000000000000000338813158706880961969426781731605513581229160990915261209011077880859375"},
+    {0x1.fffffep-68f, chars_format::fixed, 91,
+        "0.0000000000000000000067762631741376192393885356346321102716245832198183052241802215576171875"},
+    {0x1.fffffep-67f, chars_format::fixed, 90,
+        "0.000000000000000000013552526348275238478777071269264220543249166439636610448360443115234375"},
+    {0x1.fffffep-66f, chars_format::fixed, 89,
+        "0.00000000000000000002710505269655047695755414253852844108649833287927322089672088623046875"},
+    {0x1.fffffep-65f, chars_format::fixed, 88,
+        "0.0000000000000000000542101053931009539151082850770568821729966657585464417934417724609375"},
+    {0x1.fffffep-64f, chars_format::fixed, 87,
+        "0.000000000000000000108420210786201907830216570154113764345993331517092883586883544921875"},
+    {0x1.fffffep-63f, chars_format::fixed, 86,
+        "0.00000000000000000021684042157240381566043314030822752869198666303418576717376708984375"},
+    {0x1.fffffep-62f, chars_format::fixed, 85,
+        "0.0000000000000000004336808431448076313208662806164550573839733260683715343475341796875"},
+    {0x1.fffffep-61f, chars_format::fixed, 84,
+        "0.000000000000000000867361686289615262641732561232910114767946652136743068695068359375"},
+    {0x1.fffffep-60f, chars_format::fixed, 83,
+        "0.00000000000000000173472337257923052528346512246582022953589330427348613739013671875"},
+    {0x1.fffffep-59f, chars_format::fixed, 82,
+        "0.0000000000000000034694467451584610505669302449316404590717866085469722747802734375"},
+    {0x1.fffffep-58f, chars_format::fixed, 81,
+        "0.000000000000000006938893490316922101133860489863280918143573217093944549560546875"},
+    {0x1.fffffep-57f, chars_format::fixed, 80,
+        "0.00000000000000001387778698063384420226772097972656183628714643418788909912109375"},
+    {0x1.fffffep-56f, chars_format::fixed, 79,
+        "0.0000000000000000277555739612676884045354419594531236725742928683757781982421875"},
+    {0x1.fffffep-55f, chars_format::fixed, 78,
+        "0.000000000000000055511147922535376809070883918906247345148585736751556396484375"},
+    {0x1.fffffep-54f, chars_format::fixed, 77,
+        "0.00000000000000011102229584507075361814176783781249469029717147350311279296875"},
+    {0x1.fffffep-53f, chars_format::fixed, 76,
+        "0.0000000000000002220445916901415072362835356756249893805943429470062255859375"},
+    {0x1.fffffep-52f, chars_format::fixed, 75,
+        "0.000000000000000444089183380283014472567071351249978761188685894012451171875"},
+    {0x1.fffffep-51f, chars_format::fixed, 74,
+        "0.00000000000000088817836676056602894513414270249995752237737178802490234375"},
+    {0x1.fffffep-50f, chars_format::fixed, 73,
+        "0.0000000000000017763567335211320578902682854049999150447547435760498046875"},
+    {0x1.fffffep-49f, chars_format::fixed, 72,
+        "0.000000000000003552713467042264115780536570809999830089509487152099609375"},
+    {0x1.fffffep-48f, chars_format::fixed, 71,
+        "0.00000000000000710542693408452823156107314161999966017901897430419921875"},
+    {0x1.fffffep-47f, chars_format::fixed, 70,
+        "0.0000000000000142108538681690564631221462832399993203580379486083984375"},
+    {0x1.fffffep-46f, chars_format::fixed, 69,
+        "0.000000000000028421707736338112926244292566479998640716075897216796875"},
+    {0x1.fffffep-45f, chars_format::fixed, 68,
+        "0.00000000000005684341547267622585248858513295999728143215179443359375"},
+    {0x1.fffffep-44f, chars_format::fixed, 67, "0.0000000000001136868309453524517049771702659199945628643035888671875"},
+    {0x1.fffffep-43f, chars_format::fixed, 66, "0.000000000000227373661890704903409954340531839989125728607177734375"},
+    {0x1.fffffep-42f, chars_format::fixed, 65, "0.00000000000045474732378140980681990868106367997825145721435546875"},
+    {0x1.fffffep-41f, chars_format::fixed, 64, "0.0000000000009094946475628196136398173621273599565029144287109375"},
+    {0x1.fffffep-40f, chars_format::fixed, 63, "0.000000000001818989295125639227279634724254719913005828857421875"},
+    {0x1.fffffep-39f, chars_format::fixed, 62, "0.00000000000363797859025127845455926944850943982601165771484375"},
+    {0x1.fffffep-38f, chars_format::fixed, 61, "0.0000000000072759571805025569091185388970188796520233154296875"},
+    {0x1.fffffep-37f, chars_format::fixed, 60, "0.000000000014551914361005113818237077794037759304046630859375"},
+    {0x1.fffffep-36f, chars_format::fixed, 59, "0.00000000002910382872201022763647415558807551860809326171875"},
+    {0x1.fffffep-35f, chars_format::fixed, 58, "0.0000000000582076574440204552729483111761510372161865234375"},
+    {0x1.fffffep-34f, chars_format::fixed, 57, "0.000000000116415314888040910545896622352302074432373046875"},
+    {0x1.fffffep-33f, chars_format::fixed, 56, "0.00000000023283062977608182109179324470460414886474609375"},
+    {0x1.fffffep-32f, chars_format::fixed, 55, "0.0000000004656612595521636421835864894092082977294921875"},
+    {0x1.fffffep-31f, chars_format::fixed, 54, "0.000000000931322519104327284367172978818416595458984375"},
+    {0x1.fffffep-30f, chars_format::fixed, 53, "0.00000000186264503820865456873434595763683319091796875"},
+    {0x1.fffffep-29f, chars_format::fixed, 52, "0.0000000037252900764173091374686919152736663818359375"},
+    {0x1.fffffep-28f, chars_format::fixed, 51, "0.000000007450580152834618274937383830547332763671875"},
+    {0x1.fffffep-27f, chars_format::fixed, 50, "0.00000001490116030566923654987476766109466552734375"},
+    {0x1.fffffep-26f, chars_format::fixed, 49, "0.0000000298023206113384730997495353221893310546875"},
+    {0x1.fffffep-25f, chars_format::fixed, 48, "0.000000059604641222676946199499070644378662109375"},
+    {0x1.fffffep-24f, chars_format::fixed, 47, "0.00000011920928244535389239899814128875732421875"},
+    {0x1.fffffep-23f, chars_format::fixed, 46, "0.0000002384185648907077847979962825775146484375"},
+    {0x1.fffffep-22f, chars_format::fixed, 45, "0.000000476837129781415569595992565155029296875"},
+    {0x1.fffffep-21f, chars_format::fixed, 44, "0.00000095367425956283113919198513031005859375"},
+    {0x1.fffffep-20f, chars_format::fixed, 43, "0.0000019073485191256622783839702606201171875"},
+    {0x1.fffffep-19f, chars_format::fixed, 42, "0.000003814697038251324556767940521240234375"},
+    {0x1.fffffep-18f, chars_format::fixed, 41, "0.00000762939407650264911353588104248046875"},
+    {0x1.fffffep-17f, chars_format::fixed, 40, "0.0000152587881530052982270717620849609375"},
+    {0x1.fffffep-16f, chars_format::fixed, 39, "0.000030517576306010596454143524169921875"},
+    {0x1.fffffep-15f, chars_format::fixed, 38, "0.00006103515261202119290828704833984375"},
+    {0x1.fffffep-14f, chars_format::fixed, 37, "0.0001220703052240423858165740966796875"},
+    {0x1.fffffep-13f, chars_format::fixed, 36, "0.000244140610448084771633148193359375"},
+    {0x1.fffffep-12f, chars_format::fixed, 35, "0.00048828122089616954326629638671875"},
+    {0x1.fffffep-11f, chars_format::fixed, 34, "0.0009765624417923390865325927734375"},
+    {0x1.fffffep-10f, chars_format::fixed, 33, "0.001953124883584678173065185546875"},
+    {0x1.fffffep-9f, chars_format::fixed, 32, "0.00390624976716935634613037109375"},
+    {0x1.fffffep-8f, chars_format::fixed, 31, "0.0078124995343387126922607421875"},
+    {0x1.fffffep-7f, chars_format::fixed, 30, "0.015624999068677425384521484375"},
+    {0x1.fffffep-6f, chars_format::fixed, 29, "0.03124999813735485076904296875"},
+    {0x1.fffffep-5f, chars_format::fixed, 28, "0.0624999962747097015380859375"},
+    {0x1.fffffep-4f, chars_format::fixed, 27, "0.124999992549419403076171875"},
+    {0x1.fffffep-3f, chars_format::fixed, 26, "0.24999998509883880615234375"},
+    {0x1.fffffep-2f, chars_format::fixed, 25, "0.4999999701976776123046875"},
+    {0x1.fffffep-1f, chars_format::fixed, 24, "0.999999940395355224609375"},
+    {0x1.fffffep+0f, chars_format::fixed, 23, "1.99999988079071044921875"},
+    {0x1.fffffep+1f, chars_format::fixed, 22, "3.9999997615814208984375"},
+    {0x1.fffffep+2f, chars_format::fixed, 21, "7.999999523162841796875"},
+    {0x1.fffffep+3f, chars_format::fixed, 20, "15.99999904632568359375"},
+    {0x1.fffffep+4f, chars_format::fixed, 19, "31.9999980926513671875"},
+    {0x1.fffffep+5f, chars_format::fixed, 18, "63.999996185302734375"},
+    {0x1.fffffep+6f, chars_format::fixed, 17, "127.99999237060546875"},
+    {0x1.fffffep+7f, chars_format::fixed, 16, "255.9999847412109375"},
+    {0x1.fffffep+8f, chars_format::fixed, 15, "511.999969482421875"},
+    {0x1.fffffep+9f, chars_format::fixed, 14, "1023.99993896484375"},
+    {0x1.fffffep+10f, chars_format::fixed, 13, "2047.9998779296875"},
+    {0x1.fffffep+11f, chars_format::fixed, 12, "4095.999755859375"},
+    {0x1.fffffep+12f, chars_format::fixed, 11, "8191.99951171875"},
+    {0x1.fffffep+13f, chars_format::fixed, 10, "16383.9990234375"},
+    {0x1.fffffep+14f, chars_format::fixed, 9, "32767.998046875"},
+    {0x1.fffffep+15f, chars_format::fixed, 8, "65535.99609375"},
+    {0x1.fffffep+16f, chars_format::fixed, 7, "131071.9921875"},
+    {0x1.fffffep+17f, chars_format::fixed, 6, "262143.984375"},
+    {0x1.fffffep+18f, chars_format::fixed, 5, "524287.96875"},
+    {0x1.fffffep+19f, chars_format::fixed, 4, "1048575.9375"},
+    {0x1.fffffep+20f, chars_format::fixed, 3, "2097151.875"},
+    {0x1.fffffep+21f, chars_format::fixed, 2, "4194303.75"},
+    {0x1.fffffep+22f, chars_format::fixed, 1, "8388607.5"},
+    {0x1.fffffep+23f, chars_format::fixed, 0, "16777215"},
+    {0x1.fffffep+24f, chars_format::fixed, 0, "33554430"},
+    {0x1.fffffep+25f, chars_format::fixed, 0, "67108860"},
+    {0x1.fffffep+26f, chars_format::fixed, 0, "134217720"},
+    {0x1.fffffep+27f, chars_format::fixed, 0, "268435440"},
+    {0x1.fffffep+28f, chars_format::fixed, 0, "536870880"},
+    {0x1.fffffep+29f, chars_format::fixed, 0, "1073741760"},
+    {0x1.fffffep+30f, chars_format::fixed, 0, "2147483520"},
+    {0x1.fffffep+31f, chars_format::fixed, 0, "4294967040"},
+    {0x1.fffffep+32f, chars_format::fixed, 0, "8589934080"},
+    {0x1.fffffep+33f, chars_format::fixed, 0, "17179868160"},
+    {0x1.fffffep+34f, chars_format::fixed, 0, "34359736320"},
+    {0x1.fffffep+35f, chars_format::fixed, 0, "68719472640"},
+    {0x1.fffffep+36f, chars_format::fixed, 0, "137438945280"},
+    {0x1.fffffep+37f, chars_format::fixed, 0, "274877890560"},
+    {0x1.fffffep+38f, chars_format::fixed, 0, "549755781120"},
+    {0x1.fffffep+39f, chars_format::fixed, 0, "1099511562240"},
+    {0x1.fffffep+40f, chars_format::fixed, 0, "2199023124480"},
+    {0x1.fffffep+41f, chars_format::fixed, 0, "4398046248960"},
+    {0x1.fffffep+42f, chars_format::fixed, 0, "8796092497920"},
+    {0x1.fffffep+43f, chars_format::fixed, 0, "17592184995840"},
+    {0x1.fffffep+44f, chars_format::fixed, 0, "35184369991680"},
+    {0x1.fffffep+45f, chars_format::fixed, 0, "70368739983360"},
+    {0x1.fffffep+46f, chars_format::fixed, 0, "140737479966720"},
+    {0x1.fffffep+47f, chars_format::fixed, 0, "281474959933440"},
+    {0x1.fffffep+48f, chars_format::fixed, 0, "562949919866880"},
+    {0x1.fffffep+49f, chars_format::fixed, 0, "1125899839733760"},
+    {0x1.fffffep+50f, chars_format::fixed, 0, "2251799679467520"},
+    {0x1.fffffep+51f, chars_format::fixed, 0, "4503599358935040"},
+    {0x1.fffffep+52f, chars_format::fixed, 0, "9007198717870080"},
+    {0x1.fffffep+53f, chars_format::fixed, 0, "18014397435740160"},
+    {0x1.fffffep+54f, chars_format::fixed, 0, "36028794871480320"},
+    {0x1.fffffep+55f, chars_format::fixed, 0, "72057589742960640"},
+    {0x1.fffffep+56f, chars_format::fixed, 0, "144115179485921280"},
+    {0x1.fffffep+57f, chars_format::fixed, 0, "288230358971842560"},
+    {0x1.fffffep+58f, chars_format::fixed, 0, "576460717943685120"},
+    {0x1.fffffep+59f, chars_format::fixed, 0, "1152921435887370240"},
+    {0x1.fffffep+60f, chars_format::fixed, 0, "2305842871774740480"},
+    {0x1.fffffep+61f, chars_format::fixed, 0, "4611685743549480960"},
+    {0x1.fffffep+62f, chars_format::fixed, 0, "9223371487098961920"},
+    {0x1.fffffep+63f, chars_format::fixed, 0, "18446742974197923840"},
+    {0x1.fffffep+64f, chars_format::fixed, 0, "36893485948395847680"},
+    {0x1.fffffep+65f, chars_format::fixed, 0, "73786971896791695360"},
+    {0x1.fffffep+66f, chars_format::fixed, 0, "147573943793583390720"},
+    {0x1.fffffep+67f, chars_format::fixed, 0, "295147887587166781440"},
+    {0x1.fffffep+68f, chars_format::fixed, 0, "590295775174333562880"},
+    {0x1.fffffep+69f, chars_format::fixed, 0, "1180591550348667125760"},
+    {0x1.fffffep+70f, chars_format::fixed, 0, "2361183100697334251520"},
+    {0x1.fffffep+71f, chars_format::fixed, 0, "4722366201394668503040"},
+    {0x1.fffffep+72f, chars_format::fixed, 0, "9444732402789337006080"},
+    {0x1.fffffep+73f, chars_format::fixed, 0, "18889464805578674012160"},
+    {0x1.fffffep+74f, chars_format::fixed, 0, "37778929611157348024320"},
+    {0x1.fffffep+75f, chars_format::fixed, 0, "75557859222314696048640"},
+    {0x1.fffffep+76f, chars_format::fixed, 0, "151115718444629392097280"},
+    {0x1.fffffep+77f, chars_format::fixed, 0, "302231436889258784194560"},
+    {0x1.fffffep+78f, chars_format::fixed, 0, "604462873778517568389120"},
+    {0x1.fffffep+79f, chars_format::fixed, 0, "1208925747557035136778240"},
+    {0x1.fffffep+80f, chars_format::fixed, 0, "2417851495114070273556480"},
+    {0x1.fffffep+81f, chars_format::fixed, 0, "4835702990228140547112960"},
+    {0x1.fffffep+82f, chars_format::fixed, 0, "9671405980456281094225920"},
+    {0x1.fffffep+83f, chars_format::fixed, 0, "19342811960912562188451840"},
+    {0x1.fffffep+84f, chars_format::fixed, 0, "38685623921825124376903680"},
+    {0x1.fffffep+85f, chars_format::fixed, 0, "77371247843650248753807360"},
+    {0x1.fffffep+86f, chars_format::fixed, 0, "154742495687300497507614720"},
+    {0x1.fffffep+87f, chars_format::fixed, 0, "309484991374600995015229440"},
+    {0x1.fffffep+88f, chars_format::fixed, 0, "618969982749201990030458880"},
+    {0x1.fffffep+89f, chars_format::fixed, 0, "1237939965498403980060917760"},
+    {0x1.fffffep+90f, chars_format::fixed, 0, "2475879930996807960121835520"},
+    {0x1.fffffep+91f, chars_format::fixed, 0, "4951759861993615920243671040"},
+    {0x1.fffffep+92f, chars_format::fixed, 0, "9903519723987231840487342080"},
+    {0x1.fffffep+93f, chars_format::fixed, 0, "19807039447974463680974684160"},
+    {0x1.fffffep+94f, chars_format::fixed, 0, "39614078895948927361949368320"},
+    {0x1.fffffep+95f, chars_format::fixed, 0, "79228157791897854723898736640"},
+    {0x1.fffffep+96f, chars_format::fixed, 0, "158456315583795709447797473280"},
+    {0x1.fffffep+97f, chars_format::fixed, 0, "316912631167591418895594946560"},
+    {0x1.fffffep+98f, chars_format::fixed, 0, "633825262335182837791189893120"},
+    {0x1.fffffep+99f, chars_format::fixed, 0, "1267650524670365675582379786240"},
+    {0x1.fffffep+100f, chars_format::fixed, 0, "2535301049340731351164759572480"},
+    {0x1.fffffep+101f, chars_format::fixed, 0, "5070602098681462702329519144960"},
+    {0x1.fffffep+102f, chars_format::fixed, 0, "10141204197362925404659038289920"},
+    {0x1.fffffep+103f, chars_format::fixed, 0, "20282408394725850809318076579840"},
+    {0x1.fffffep+104f, chars_format::fixed, 0, "40564816789451701618636153159680"},
+    {0x1.fffffep+105f, chars_format::fixed, 0, "81129633578903403237272306319360"},
+    {0x1.fffffep+106f, chars_format::fixed, 0, "162259267157806806474544612638720"},
+    {0x1.fffffep+107f, chars_format::fixed, 0, "324518534315613612949089225277440"},
+    {0x1.fffffep+108f, chars_format::fixed, 0, "649037068631227225898178450554880"},
+    {0x1.fffffep+109f, chars_format::fixed, 0, "1298074137262454451796356901109760"},
+    {0x1.fffffep+110f, chars_format::fixed, 0, "2596148274524908903592713802219520"},
+    {0x1.fffffep+111f, chars_format::fixed, 0, "5192296549049817807185427604439040"},
+    {0x1.fffffep+112f, chars_format::fixed, 0, "10384593098099635614370855208878080"},
+    {0x1.fffffep+113f, chars_format::fixed, 0, "20769186196199271228741710417756160"},
+    {0x1.fffffep+114f, chars_format::fixed, 0, "41538372392398542457483420835512320"},
+    {0x1.fffffep+115f, chars_format::fixed, 0, "83076744784797084914966841671024640"},
+    {0x1.fffffep+116f, chars_format::fixed, 0, "166153489569594169829933683342049280"},
+    {0x1.fffffep+117f, chars_format::fixed, 0, "332306979139188339659867366684098560"},
+    {0x1.fffffep+118f, chars_format::fixed, 0, "664613958278376679319734733368197120"},
+    {0x1.fffffep+119f, chars_format::fixed, 0, "1329227916556753358639469466736394240"},
+    {0x1.fffffep+120f, chars_format::fixed, 0, "2658455833113506717278938933472788480"},
+    {0x1.fffffep+121f, chars_format::fixed, 0, "5316911666227013434557877866945576960"},
+    {0x1.fffffep+122f, chars_format::fixed, 0, "10633823332454026869115755733891153920"},
+    {0x1.fffffep+123f, chars_format::fixed, 0, "21267646664908053738231511467782307840"},
+    {0x1.fffffep+124f, chars_format::fixed, 0, "42535293329816107476463022935564615680"},
+    {0x1.fffffep+125f, chars_format::fixed, 0, "85070586659632214952926045871129231360"},
+    {0x1.fffffep+126f, chars_format::fixed, 0, "170141173319264429905852091742258462720"},
+    {0x1.fffffep+127f, chars_format::fixed, 0, "340282346638528859811704183484516925440"},
+};
+
+#endif // FLOAT_FIXED_PRECISION_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_from_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_from_chars_test_cases.hpp
new file mode 100644
index 0000000..c0fbfcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_from_chars_test_cases.hpp
@@ -0,0 +1,139 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef FLOAT_FROM_CHARS_TEST_CASES_HPP
+#define FLOAT_FROM_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+#include <stddef.h>
+#include <system_error>
+using namespace std;
+
+inline constexpr FloatFromCharsTestCase float_from_chars_test_cases[] = {
+    {"1.a0000400", chars_format::hex, 10, errc{}, 0x1.a00004p0f}, // exact
+    {"1.a0000401", chars_format::hex, 10, errc{}, 0x1.a00004p0f}, // below midpoint, round down
+    {"1.a0000500", chars_format::hex, 10, errc{}, 0x1.a00004p0f}, // midpoint, round down to even
+    {"1.a0000501", chars_format::hex, 10, errc{}, 0x1.a00006p0f}, // above midpoint, round up
+    {"1.a0000600", chars_format::hex, 10, errc{}, 0x1.a00006p0f}, // exact
+    {"1.a0000601", chars_format::hex, 10, errc{}, 0x1.a00006p0f}, // below midpoint, round down
+    {"1.a0000700", chars_format::hex, 10, errc{}, 0x1.a00008p0f}, // midpoint, round up to even
+    {"1.a0000701", chars_format::hex, 10, errc{}, 0x1.a00008p0f}, // above midpoint, round up
+
+    {"1.0000040", chars_format::hex, 9, errc{}, 0x1.000004p0f}, // exact
+    {"1.0000041", chars_format::hex, 9, errc{}, 0x1.000004p0f}, // below midpoint, round down
+    {"1.0000050", chars_format::hex, 9, errc{}, 0x1.000004p0f}, // midpoint, round down to even
+    {"1.0000051", chars_format::hex, 9, errc{}, 0x1.000006p0f}, // above midpoint, round up
+    {"1.0000060", chars_format::hex, 9, errc{}, 0x1.000006p0f}, // exact
+    {"1.0000061", chars_format::hex, 9, errc{}, 0x1.000006p0f}, // below midpoint, round down
+    {"1.0000070", chars_format::hex, 9, errc{}, 0x1.000008p0f}, // midpoint, round up to even
+    {"1.0000071", chars_format::hex, 9, errc{}, 0x1.000008p0f}, // above midpoint, round up
+
+    {"1.0000002384185791015625000000", chars_format::general, 30, errc{}, 0x1.000004p0f}, // exact
+    {"1.0000002421438694000244140625", chars_format::general, 30, errc{}, 0x1.000004p0f}, // below midpoint, round down
+    {"1.0000002980232238769531249999", chars_format::general, 30, errc{}, 0x1.000004p0f}, // below midpoint, round down
+    {"1.0000002980232238769531250000", chars_format::general, 30, errc{},
+        0x1.000004p0f}, // midpoint, round down to even
+    {"1.0000002980232238769531250001", chars_format::general, 30, errc{}, 0x1.000006p0f}, // above midpoint, round up
+    {"1.0000003017485141754150390625", chars_format::general, 30, errc{}, 0x1.000006p0f}, // above midpoint, round up
+    {"1.0000003576278686523437500000", chars_format::general, 30, errc{}, 0x1.000006p0f}, // exact
+    {"1.0000003613531589508056640625", chars_format::general, 30, errc{}, 0x1.000006p0f}, // below midpoint, round down
+    {"1.0000004172325134277343749999", chars_format::general, 30, errc{}, 0x1.000006p0f}, // below midpoint, round down
+    {"1.0000004172325134277343750000", chars_format::general, 30, errc{}, 0x1.000008p0f}, // midpoint, round up to even
+    {"1.0000004172325134277343750001", chars_format::general, 30, errc{}, 0x1.000008p0f}, // above midpoint, round up
+    {"1.0000004209578037261962890625", chars_format::general, 30, errc{}, 0x1.000008p0f}, // above midpoint, round up
+
+    // VSO-838635 "<charconv>: from_chars() mishandles certain subnormals"
+    // This bug didn't actually affect float, but we should have similar test cases.
+    // These values change on half-ulp boundaries:
+    // 1 * 2^-150 ~= 7.01e-46 (half-ulp between zero and min subnormal)
+    // 2 * 2^-150 ~= 1.40e-45 (min subnormal)
+    // 3 * 2^-150 ~= 2.10e-45 (half-ulp between min subnormal and next subnormal)
+    // 4 * 2^-150 ~= 2.80e-45 (next subnormal)
+    {"6."
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666"
+     "6666666666666666666e-46",
+        chars_format::scientific, 1006, errc::result_out_of_range, 0x0.000000p+0f},
+    {"7."
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777"
+     "7777777777777777777e-46",
+        chars_format::scientific, 1006, errc{}, 0x0.000002p-126f},
+    {"8."
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888"
+     "8888888888888888888e-46",
+        chars_format::scientific, 1006, errc{}, 0x0.000002p-126f},
+    {"9."
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999"
+     "9999999999999999999e-46",
+        chars_format::scientific, 1006, errc{}, 0x0.000002p-126f},
+    {"1."
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
+     "1111111111111111111e-45",
+        chars_format::scientific, 1006, errc{}, 0x0.000002p-126f},
+    {"2."
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222"
+     "2222222222222222222e-45",
+        chars_format::scientific, 1006, errc{}, 0x0.000004p-126f},
+
+    // VSO-733765 "<charconv>: [Feedback] double std::from_chars behavior on exponent out of range"
+    // LWG-3081 "Floating point from_chars API does not distinguish between overflow and underflow"
+    // These test cases exercise every overflow/underflow codepath.
+    {"1e+1000", chars_format::scientific, 7, errc::result_out_of_range, float_inf},
+    {"1e-1000", chars_format::scientific, 7, errc::result_out_of_range, 0.0f},
+    {"1.ffffffp+127", chars_format::hex, 13, errc::result_out_of_range, float_inf},
+    {"1e+2000", chars_format::scientific, 7, errc::result_out_of_range, float_inf},
+    {"1e-2000", chars_format::scientific, 7, errc::result_out_of_range, 0.0f},
+    {"1e+9999", chars_format::scientific, 7, errc::result_out_of_range, float_inf},
+    {"1e-9999", chars_format::scientific, 7, errc::result_out_of_range, 0.0f},
+    {"10e+5199", chars_format::scientific, 8, errc::result_out_of_range, float_inf},
+    {"0.001e-5199", chars_format::scientific, 11, errc::result_out_of_range, 0.0f},
+};
+
+#endif // FLOAT_FROM_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_general_precision_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_general_precision_to_chars_test_cases.hpp
new file mode 100644
index 0000000..4d46e2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_general_precision_to_chars_test_cases.hpp
@@ -0,0 +1,1218 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef FLOAT_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
+#define FLOAT_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+// C11 7.21.6.1 "The fprintf function"/8:
+
+// "Then, if a conversion with style E would have an exponent of X:
+// - if P > X >= -4, the conversion is with style f (or F) and precision P - (X + 1).
+// - otherwise, the conversion is with style e (or E) and precision P - 1."
+
+// "Finally, [...] any trailing zeros are removed from the fractional portion of the result
+// and the decimal-point character is removed if there is no fractional portion remaining."
+
+inline constexpr FloatPrecisionToCharsTestCase float_general_precision_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0f, chars_format::general, 4, "0"},
+    {-0.0f, chars_format::general, 4, "-0"},
+    {float_inf, chars_format::general, 4, "inf"},
+    {-float_inf, chars_format::general, 4, "-inf"},
+    {float_nan, chars_format::general, 4, "nan"},
+    {-float_nan, chars_format::general, 4, "-nan(ind)"},
+    {float_nan_payload, chars_format::general, 4, "nan"},
+    {-float_nan_payload, chars_format::general, 4, "-nan"},
+    {1.729f, chars_format::general, 4, "1.729"},
+    {-1.729f, chars_format::general, 4, "-1.729"},
+
+    // Test corner cases.
+    {0x0.000002p-126f, chars_format::general, 1000,
+        "1.40129846432481707092372958328991613128026194187651577175706828388979108268586060148663818836212158203125"
+        "e-45"}, // min subnormal
+    {0x0.fffffep-126f, chars_format::general, 1000,
+        "1."
+        "17549421069244107548702944484928734882705242874589333385717453057158887047561890426550235133618116378784179687"
+        "5e-38"}, // max subnormal
+    {0x1p-126f, chars_format::general, 1000,
+        "1.1754943508222875079687365372222456778186655567720875215087517062784172594547271728515625e-38"}, // min normal
+    {0x1.fffffep+127f, chars_format::general, 1000, "340282346638528859811704183484516925440"}, // max normal
+
+    {0x0.000002p-126f, chars_format::general, 6, "1.4013e-45"}, // min subnormal
+    {0x0.fffffep-126f, chars_format::general, 6, "1.17549e-38"}, // max subnormal
+    {0x1p-126f, chars_format::general, 6, "1.17549e-38"}, // min normal
+    {0x1.fffffep+127f, chars_format::general, 6, "3.40282e+38"}, // max normal
+
+    // Test maximum-length output (excluding minus signs).
+    {0x1.fffffep-126f, chars_format::general, 1000,
+        "2."
+        "35098856151472858345576598207153302664571798551798085536592623685000612993034607711706485133618116378784179687"
+        "5e-38"}, // scientific, happens to be the same length as max subnormal
+    {0x1.fffffep-14f, chars_format::general, 1000, "0.0001220703052240423858165740966796875"}, // fixed
+
+    // Test varying precision. Negative precision requests P == 6. Zero precision requests P == 1.
+    // Here, the scientific exponent X is 0.
+    // Therefore, fixed notation is always chosen with precision P - (X + 1) == P - 1.
+    {0x1.b04p0f, chars_format::general, -2, "1.68848"},
+    {0x1.b04p0f, chars_format::general, -1, "1.68848"},
+    {0x1.b04p0f, chars_format::general, 0, "2"},
+    {0x1.b04p0f, chars_format::general, 1, "2"}, // fixed notation trims decimal point
+    {0x1.b04p0f, chars_format::general, 2, "1.7"},
+    {0x1.b04p0f, chars_format::general, 3, "1.69"},
+    {0x1.b04p0f, chars_format::general, 4, "1.688"},
+    {0x1.b04p0f, chars_format::general, 5, "1.6885"},
+    {0x1.b04p0f, chars_format::general, 6, "1.68848"},
+    {0x1.b04p0f, chars_format::general, 7, "1.688477"},
+    {0x1.b04p0f, chars_format::general, 8, "1.6884766"},
+    {0x1.b04p0f, chars_format::general, 9, "1.68847656"},
+    {0x1.b04p0f, chars_format::general, 10, "1.688476562"}, // round to even
+    {0x1.b04p0f, chars_format::general, 11, "1.6884765625"}, // exact
+    {0x1.b04p0f, chars_format::general, 12, "1.6884765625"}, // trim trailing zeros
+    {0x1.b04p0f, chars_format::general, 13, "1.6884765625"},
+
+    // Here, the scientific exponent X is -5.
+    // Therefore, scientific notation is always chosen with precision P - 1.
+    {0x1.8p-15f, chars_format::general, -2, "4.57764e-05"},
+    {0x1.8p-15f, chars_format::general, -1, "4.57764e-05"},
+    {0x1.8p-15f, chars_format::general, 0, "5e-05"},
+    {0x1.8p-15f, chars_format::general, 1, "5e-05"}, // scientific notation trims decimal point
+    {0x1.8p-15f, chars_format::general, 2, "4.6e-05"},
+    {0x1.8p-15f, chars_format::general, 3, "4.58e-05"},
+    {0x1.8p-15f, chars_format::general, 4, "4.578e-05"},
+    {0x1.8p-15f, chars_format::general, 5, "4.5776e-05"},
+    {0x1.8p-15f, chars_format::general, 6, "4.57764e-05"},
+    {0x1.8p-15f, chars_format::general, 7, "4.577637e-05"},
+    {0x1.8p-15f, chars_format::general, 8, "4.5776367e-05"},
+    {0x1.8p-15f, chars_format::general, 9, "4.57763672e-05"},
+    {0x1.8p-15f, chars_format::general, 10, "4.577636719e-05"},
+    {0x1.8p-15f, chars_format::general, 11, "4.5776367188e-05"}, // round to even
+    {0x1.8p-15f, chars_format::general, 12, "4.57763671875e-05"}, // exact
+    {0x1.8p-15f, chars_format::general, 13, "4.57763671875e-05"}, // trim trailing zeros
+    {0x1.8p-15f, chars_format::general, 14, "4.57763671875e-05"},
+
+    // Trim trailing zeros.
+    {0x1.80015p0f, chars_format::general, 1, "2"}, // fixed notation trims decimal point
+    {0x1.80015p0f, chars_format::general, 2, "1.5"},
+    {0x1.80015p0f, chars_format::general, 3, "1.5"}, // general trims trailing zeros
+    {0x1.80015p0f, chars_format::general, 4, "1.5"},
+    {0x1.80015p0f, chars_format::general, 5, "1.5"},
+    {0x1.80015p0f, chars_format::general, 6, "1.50002"},
+    {0x1.80015p0f, chars_format::general, 7, "1.50002"},
+    {0x1.80015p0f, chars_format::general, 8, "1.50002"},
+    {0x1.80015p0f, chars_format::general, 9, "1.50002003"},
+    {0x1.80015p0f, chars_format::general, 10, "1.500020027"},
+    {0x1.80015p0f, chars_format::general, 11, "1.5000200272"},
+    {0x1.80015p0f, chars_format::general, 12, "1.50002002716"},
+    {0x1.80015p0f, chars_format::general, 13, "1.500020027161"},
+    {0x1.80015p0f, chars_format::general, 14, "1.5000200271606"},
+    {0x1.80015p0f, chars_format::general, 15, "1.50002002716064"},
+    {0x1.80015p0f, chars_format::general, 16, "1.500020027160645"},
+    {0x1.80015p0f, chars_format::general, 17, "1.5000200271606445"},
+    {0x1.80015p0f, chars_format::general, 18, "1.50002002716064453"},
+    {0x1.80015p0f, chars_format::general, 19, "1.500020027160644531"},
+    {0x1.80015p0f, chars_format::general, 20, "1.5000200271606445312"}, // round to even
+    {0x1.80015p0f, chars_format::general, 21, "1.50002002716064453125"}, // exact
+
+    // Trim trailing zeros and decimal point.
+    {0x1.00015p0f, chars_format::general, 1, "1"}, // fixed notation trims decimal point
+    {0x1.00015p0f, chars_format::general, 2, "1"}, // general trims decimal point and trailing zeros
+    {0x1.00015p0f, chars_format::general, 3, "1"},
+    {0x1.00015p0f, chars_format::general, 4, "1"},
+    {0x1.00015p0f, chars_format::general, 5, "1"},
+    {0x1.00015p0f, chars_format::general, 6, "1.00002"},
+    {0x1.00015p0f, chars_format::general, 7, "1.00002"},
+    {0x1.00015p0f, chars_format::general, 8, "1.00002"},
+    {0x1.00015p0f, chars_format::general, 9, "1.00002003"},
+    {0x1.00015p0f, chars_format::general, 10, "1.000020027"},
+    {0x1.00015p0f, chars_format::general, 11, "1.0000200272"},
+    {0x1.00015p0f, chars_format::general, 12, "1.00002002716"},
+    {0x1.00015p0f, chars_format::general, 13, "1.000020027161"},
+    {0x1.00015p0f, chars_format::general, 14, "1.0000200271606"},
+    {0x1.00015p0f, chars_format::general, 15, "1.00002002716064"},
+    {0x1.00015p0f, chars_format::general, 16, "1.000020027160645"},
+    {0x1.00015p0f, chars_format::general, 17, "1.0000200271606445"},
+    {0x1.00015p0f, chars_format::general, 18, "1.00002002716064453"},
+    {0x1.00015p0f, chars_format::general, 19, "1.000020027160644531"},
+    {0x1.00015p0f, chars_format::general, 20, "1.0000200271606445312"}, // round to even
+    {0x1.00015p0f, chars_format::general, 21, "1.00002002716064453125"}, // exact
+
+    // Trim trailing zeros, scientific notation.
+    {0x1.5cf752p-20f, chars_format::general, 1, "1e-06"}, // scientific notation trims decimal point
+    {0x1.5cf752p-20f, chars_format::general, 2, "1.3e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 3, "1.3e-06"}, // general trims trailing zeros
+    {0x1.5cf752p-20f, chars_format::general, 4, "1.3e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 5, "1.3e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 6, "1.3e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 7, "1.3e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 8, "1.3e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 9, "1.30000001e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 10, "1.300000008e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 11, "1.3000000081e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 12, "1.30000000809e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 13, "1.300000008086e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 14, "1.3000000080865e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 15, "1.3000000080865e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 16, "1.300000008086499e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 17, "1.3000000080864993e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 18, "1.30000000808649929e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 19, "1.300000008086499292e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 20, "1.3000000080864992924e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 21, "1.3000000080864992924e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 22, "1.300000008086499292403e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 23, "1.3000000080864992924035e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 24, "1.30000000808649929240346e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 25, "1.30000000808649929240346e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 26, "1.3000000080864992924034595e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 27, "1.30000000808649929240345955e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 28, "1.300000008086499292403459549e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 29, "1.300000008086499292403459549e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 30, "1.30000000808649929240345954895e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 31, "1.30000000808649929240345954895e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 32, "1.3000000080864992924034595489502e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 33, "1.3000000080864992924034595489502e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 34, "1.300000008086499292403459548950195e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 35, "1.3000000080864992924034595489501953e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 36, "1.30000000808649929240345954895019531e-06"},
+    {0x1.5cf752p-20f, chars_format::general, 37, "1.300000008086499292403459548950195312e-06"}, // round to even
+    {0x1.5cf752p-20f, chars_format::general, 38, "1.3000000080864992924034595489501953125e-06"}, // exact
+
+    // Trim trailing zeros and decimal point, scientific notation.
+    {0x1.92a738p-19f, chars_format::general, 1, "3e-06"}, // scientific notation trims decimal point
+    {0x1.92a738p-19f, chars_format::general, 2, "3e-06"}, // general trims decimal point and trailing zeros
+    {0x1.92a738p-19f, chars_format::general, 3, "3e-06"},
+    {0x1.92a738p-19f, chars_format::general, 4, "3e-06"},
+    {0x1.92a738p-19f, chars_format::general, 5, "3e-06"},
+    {0x1.92a738p-19f, chars_format::general, 6, "3e-06"},
+    {0x1.92a738p-19f, chars_format::general, 7, "3e-06"},
+    {0x1.92a738p-19f, chars_format::general, 8, "3.0000001e-06"},
+    {0x1.92a738p-19f, chars_format::general, 9, "3.00000011e-06"},
+    {0x1.92a738p-19f, chars_format::general, 10, "3.000000106e-06"},
+    {0x1.92a738p-19f, chars_format::general, 11, "3.0000001061e-06"},
+    {0x1.92a738p-19f, chars_format::general, 12, "3.00000010611e-06"},
+    {0x1.92a738p-19f, chars_format::general, 13, "3.000000106113e-06"},
+    {0x1.92a738p-19f, chars_format::general, 14, "3.0000001061126e-06"},
+    {0x1.92a738p-19f, chars_format::general, 15, "3.00000010611257e-06"},
+    {0x1.92a738p-19f, chars_format::general, 16, "3.000000106112566e-06"},
+    {0x1.92a738p-19f, chars_format::general, 17, "3.0000001061125658e-06"},
+    {0x1.92a738p-19f, chars_format::general, 18, "3.00000010611256585e-06"},
+    {0x1.92a738p-19f, chars_format::general, 19, "3.000000106112565845e-06"},
+    {0x1.92a738p-19f, chars_format::general, 20, "3.0000001061125658453e-06"},
+    {0x1.92a738p-19f, chars_format::general, 21, "3.00000010611256584525e-06"},
+    {0x1.92a738p-19f, chars_format::general, 22, "3.000000106112565845251e-06"},
+    {0x1.92a738p-19f, chars_format::general, 23, "3.0000001061125658452511e-06"},
+    {0x1.92a738p-19f, chars_format::general, 24, "3.00000010611256584525108e-06"},
+    {0x1.92a738p-19f, chars_format::general, 25, "3.000000106112565845251083e-06"},
+    {0x1.92a738p-19f, chars_format::general, 26, "3.0000001061125658452510834e-06"},
+    {0x1.92a738p-19f, chars_format::general, 27, "3.00000010611256584525108337e-06"},
+    {0x1.92a738p-19f, chars_format::general, 28, "3.000000106112565845251083374e-06"},
+    {0x1.92a738p-19f, chars_format::general, 29, "3.000000106112565845251083374e-06"},
+    {0x1.92a738p-19f, chars_format::general, 30, "3.00000010611256584525108337402e-06"},
+    {0x1.92a738p-19f, chars_format::general, 31, "3.000000106112565845251083374023e-06"},
+    {0x1.92a738p-19f, chars_format::general, 32, "3.0000001061125658452510833740234e-06"},
+    {0x1.92a738p-19f, chars_format::general, 33, "3.00000010611256584525108337402344e-06"},
+    {0x1.92a738p-19f, chars_format::general, 34, "3.000000106112565845251083374023438e-06"}, // round to even
+    {0x1.92a738p-19f, chars_format::general, 35, "3.0000001061125658452510833740234375e-06"}, // exact
+
+    // Test a large precision with fixed notation and scientific notation,
+    // verifying that we remain within the bounds of any lookup tables.
+    {0x1.ba9fbep+0f, chars_format::general, 5000, "1.72899997234344482421875"},
+    {0x1.d01ffap-20f, chars_format::general, 5000, "1.7290000187131226994097232818603515625e-06"},
+
+    // Test the transitions between fixed notation and scientific notation.
+    {5555555.0f, chars_format::general, 1, "6e+06"},
+    {555555.0f, chars_format::general, 1, "6e+05"},
+    {55555.0f, chars_format::general, 1, "6e+04"},
+    {5555.0f, chars_format::general, 1, "6e+03"},
+    {555.0f, chars_format::general, 1, "6e+02"},
+    {55.0f, chars_format::general, 1, "6e+01"}, // round to even
+    {5.0f, chars_format::general, 1, "5"},
+    {0x1p-3f, chars_format::general, 1, "0.1"}, // 0.125
+    {0x1p-6f, chars_format::general, 1, "0.02"}, // 0.015625
+    {0x1p-9f, chars_format::general, 1, "0.002"}, // 0.001953125
+    {0x1p-13f, chars_format::general, 1, "0.0001"}, // 0.0001220703125
+    {0x1p-16f, chars_format::general, 1, "2e-05"}, // 1.52587890625e-05
+    {0x1p-19f, chars_format::general, 1, "2e-06"}, // 1.9073486328125e-06
+
+    {5555555.0f, chars_format::general, 2, "5.6e+06"},
+    {555555.0f, chars_format::general, 2, "5.6e+05"},
+    {55555.0f, chars_format::general, 2, "5.6e+04"},
+    {5555.0f, chars_format::general, 2, "5.6e+03"},
+    {555.0f, chars_format::general, 2, "5.6e+02"}, // round to even
+    {55.0f, chars_format::general, 2, "55"},
+    {5.0f, chars_format::general, 2, "5"},
+    {0x1p-3f, chars_format::general, 2, "0.12"}, // round to even
+    {0x1p-6f, chars_format::general, 2, "0.016"},
+    {0x1p-9f, chars_format::general, 2, "0.002"},
+    {0x1p-13f, chars_format::general, 2, "0.00012"},
+    {0x1p-16f, chars_format::general, 2, "1.5e-05"},
+    {0x1p-19f, chars_format::general, 2, "1.9e-06"},
+
+    {5555555.0f, chars_format::general, 3, "5.56e+06"},
+    {555555.0f, chars_format::general, 3, "5.56e+05"},
+    {55555.0f, chars_format::general, 3, "5.56e+04"},
+    {5555.0f, chars_format::general, 3, "5.56e+03"}, // round to even
+    {555.0f, chars_format::general, 3, "555"},
+    {55.0f, chars_format::general, 3, "55"},
+    {5.0f, chars_format::general, 3, "5"},
+    {0x1p-3f, chars_format::general, 3, "0.125"},
+    {0x1p-6f, chars_format::general, 3, "0.0156"},
+    {0x1p-9f, chars_format::general, 3, "0.00195"},
+    {0x1p-13f, chars_format::general, 3, "0.000122"},
+    {0x1p-16f, chars_format::general, 3, "1.53e-05"},
+    {0x1p-19f, chars_format::general, 3, "1.91e-06"},
+
+    {5555555.0f, chars_format::general, 4, "5.556e+06"},
+    {555555.0f, chars_format::general, 4, "5.556e+05"},
+    {55555.0f, chars_format::general, 4, "5.556e+04"}, // round to even
+    {5555.0f, chars_format::general, 4, "5555"},
+    {555.0f, chars_format::general, 4, "555"},
+    {55.0f, chars_format::general, 4, "55"},
+    {5.0f, chars_format::general, 4, "5"},
+    {0x1p-3f, chars_format::general, 4, "0.125"},
+    {0x1p-6f, chars_format::general, 4, "0.01562"}, // round to even
+    {0x1p-9f, chars_format::general, 4, "0.001953"},
+    {0x1p-13f, chars_format::general, 4, "0.0001221"},
+    {0x1p-16f, chars_format::general, 4, "1.526e-05"},
+    {0x1p-19f, chars_format::general, 4, "1.907e-06"},
+
+    {5555555.0f, chars_format::general, 5, "5.5556e+06"},
+    {555555.0f, chars_format::general, 5, "5.5556e+05"}, // round to even
+    {55555.0f, chars_format::general, 5, "55555"},
+    {5555.0f, chars_format::general, 5, "5555"},
+    {555.0f, chars_format::general, 5, "555"},
+    {55.0f, chars_format::general, 5, "55"},
+    {5.0f, chars_format::general, 5, "5"},
+    {0x1p-3f, chars_format::general, 5, "0.125"},
+    {0x1p-6f, chars_format::general, 5, "0.015625"},
+    {0x1p-9f, chars_format::general, 5, "0.0019531"},
+    {0x1p-13f, chars_format::general, 5, "0.00012207"},
+    {0x1p-16f, chars_format::general, 5, "1.5259e-05"},
+    {0x1p-19f, chars_format::general, 5, "1.9073e-06"},
+
+    // Tricky corner cases.
+    // In these scenarios, rounding can adjust the scientific exponent X,
+    // which affects the transition between fixed notation and scientific notation.
+    {999.999f, chars_format::general, 1, "1e+03"}, // "%.0e" is "1e+03"; X == 3
+    {999.999f, chars_format::general, 2, "1e+03"}, // "%.1e" is "1.0e+03"; X == 3
+    {999.999f, chars_format::general, 3, "1e+03"}, // "%.2e" is "1.00e+03"; X == 3
+    {999.999f, chars_format::general, 4, "1000"}, // "%.3e" is "1.000e+03"; X == 3
+    {999.999f, chars_format::general, 5, "1000"}, // "%.4e" is "1.0000e+03"; X == 3
+    {999.999f, chars_format::general, 6, "999.999"}, // "%.5e" is "9.99999e+02"; X == 2
+
+    {999.99f, chars_format::general, 1, "1e+03"},
+    {999.99f, chars_format::general, 2, "1e+03"},
+    {999.99f, chars_format::general, 3, "1e+03"},
+    {999.99f, chars_format::general, 4, "1000"},
+    {999.99f, chars_format::general, 5, "999.99"},
+    {999.99f, chars_format::general, 6, "999.99"},
+
+    // C11's Standardese is slightly vague about how to perform the trial formatting in scientific notation,
+    // but the intention is to use precision P - 1, which is what's used when scientific notation is actually chosen.
+    // This example verifies this behavior. Here, P == 3 performs trial formatting with "%.2e", triggering rounding.
+    // That increases X to 3, forcing scientific notation to be chosen.
+    // If P == 3 performed trial formatting with "%.3e", rounding wouldn't happen,
+    // X would be 2, and fixed notation would be chosen.
+    {999.9f, chars_format::general, 1, "1e+03"}, // "%.0e" is "1e+03"; X == 3
+    {999.9f, chars_format::general, 2, "1e+03"}, // "%.1e" is "1.0e+03"; X == 3
+    {999.9f, chars_format::general, 3, "1e+03"}, // "%.2e" is "1.00e+03"; X == 3; SPECIAL CORNER CASE
+    {999.9f, chars_format::general, 4, "999.9"}, // "%.3e" is "9.999e+02"; X == 2
+    {999.9f, chars_format::general, 5, "999.9"}, // "%.4e" is "9.9990e+02"; X == 2
+    {999.9f, chars_format::general, 6, "999.9"}, // "%.5e" is "9.99900e+02"; X == 2
+
+    {999.0f, chars_format::general, 1, "1e+03"},
+    {999.0f, chars_format::general, 2, "1e+03"},
+    {999.0f, chars_format::general, 3, "999"},
+    {999.0f, chars_format::general, 4, "999"},
+    {999.0f, chars_format::general, 5, "999"},
+    {999.0f, chars_format::general, 6, "999"},
+
+    {99.9999f, chars_format::general, 1, "1e+02"},
+    {99.9999f, chars_format::general, 2, "1e+02"},
+    {99.9999f, chars_format::general, 3, "100"},
+    {99.9999f, chars_format::general, 4, "100"},
+    {99.9999f, chars_format::general, 5, "100"},
+    {99.9999f, chars_format::general, 6, "99.9999"},
+
+    {99.999f, chars_format::general, 1, "1e+02"},
+    {99.999f, chars_format::general, 2, "1e+02"},
+    {99.999f, chars_format::general, 3, "100"},
+    {99.999f, chars_format::general, 4, "100"},
+    {99.999f, chars_format::general, 5, "99.999"},
+    {99.999f, chars_format::general, 6, "99.999"},
+
+    {99.99f, chars_format::general, 1, "1e+02"},
+    {99.99f, chars_format::general, 2, "1e+02"},
+    {99.99f, chars_format::general, 3, "100"},
+    {99.99f, chars_format::general, 4, "99.99"},
+    {99.99f, chars_format::general, 5, "99.99"},
+    {99.99f, chars_format::general, 6, "99.99"},
+
+    {99.9f, chars_format::general, 1, "1e+02"},
+    {99.9f, chars_format::general, 2, "1e+02"},
+    {99.9f, chars_format::general, 3, "99.9"},
+    {99.9f, chars_format::general, 4, "99.9"},
+    {99.9f, chars_format::general, 5, "99.9"},
+    {99.9f, chars_format::general, 6, "99.9"},
+
+    {99.0f, chars_format::general, 1, "1e+02"},
+    {99.0f, chars_format::general, 2, "99"},
+    {99.0f, chars_format::general, 3, "99"},
+    {99.0f, chars_format::general, 4, "99"},
+    {99.0f, chars_format::general, 5, "99"},
+    {99.0f, chars_format::general, 6, "99"},
+
+    {9.99999f, chars_format::general, 1, "1e+01"},
+    {9.99999f, chars_format::general, 2, "10"},
+    {9.99999f, chars_format::general, 3, "10"},
+    {9.99999f, chars_format::general, 4, "10"},
+    {9.99999f, chars_format::general, 5, "10"},
+    {9.99999f, chars_format::general, 6, "9.99999"},
+
+    {9.9999f, chars_format::general, 1, "1e+01"},
+    {9.9999f, chars_format::general, 2, "10"},
+    {9.9999f, chars_format::general, 3, "10"},
+    {9.9999f, chars_format::general, 4, "10"},
+    {9.9999f, chars_format::general, 5, "9.9999"},
+    {9.9999f, chars_format::general, 6, "9.9999"},
+
+    {9.999f, chars_format::general, 1, "1e+01"},
+    {9.999f, chars_format::general, 2, "10"},
+    {9.999f, chars_format::general, 3, "10"},
+    {9.999f, chars_format::general, 4, "9.999"},
+    {9.999f, chars_format::general, 5, "9.999"},
+    {9.999f, chars_format::general, 6, "9.999"},
+
+    {9.99f, chars_format::general, 1, "1e+01"},
+    {9.99f, chars_format::general, 2, "10"},
+    {9.99f, chars_format::general, 3, "9.99"},
+    {9.99f, chars_format::general, 4, "9.99"},
+    {9.99f, chars_format::general, 5, "9.99"},
+    {9.99f, chars_format::general, 6, "9.99"},
+
+    {9.9f, chars_format::general, 1, "1e+01"},
+    {9.9f, chars_format::general, 2, "9.9"},
+    {9.9f, chars_format::general, 3, "9.9"},
+    {9.9f, chars_format::general, 4, "9.9"},
+    {9.9f, chars_format::general, 5, "9.9"},
+    {9.9f, chars_format::general, 6, "9.9"},
+
+    {9.0f, chars_format::general, 1, "9"},
+    {9.0f, chars_format::general, 2, "9"},
+    {9.0f, chars_format::general, 3, "9"},
+    {9.0f, chars_format::general, 4, "9"},
+    {9.0f, chars_format::general, 5, "9"},
+    {9.0f, chars_format::general, 6, "9"},
+
+    {0.999999f, chars_format::general, 1, "1"},
+    {0.999999f, chars_format::general, 2, "1"},
+    {0.999999f, chars_format::general, 3, "1"},
+    {0.999999f, chars_format::general, 4, "1"},
+    {0.999999f, chars_format::general, 5, "1"},
+    {0.999999f, chars_format::general, 6, "0.999999"},
+
+    {0.99999f, chars_format::general, 1, "1"},
+    {0.99999f, chars_format::general, 2, "1"},
+    {0.99999f, chars_format::general, 3, "1"},
+    {0.99999f, chars_format::general, 4, "1"},
+    {0.99999f, chars_format::general, 5, "0.99999"},
+    {0.99999f, chars_format::general, 6, "0.99999"},
+
+    {0.9999f, chars_format::general, 1, "1"},
+    {0.9999f, chars_format::general, 2, "1"},
+    {0.9999f, chars_format::general, 3, "1"},
+    {0.9999f, chars_format::general, 4, "0.9999"},
+    {0.9999f, chars_format::general, 5, "0.9999"},
+    {0.9999f, chars_format::general, 6, "0.9999"},
+
+    {0.999f, chars_format::general, 1, "1"},
+    {0.999f, chars_format::general, 2, "1"},
+    {0.999f, chars_format::general, 3, "0.999"},
+    {0.999f, chars_format::general, 4, "0.999"},
+    {0.999f, chars_format::general, 5, "0.999"},
+    {0.999f, chars_format::general, 6, "0.999"},
+
+    {0.99f, chars_format::general, 1, "1"},
+    {0.99f, chars_format::general, 2, "0.99"},
+    {0.99f, chars_format::general, 3, "0.99"},
+    {0.99f, chars_format::general, 4, "0.99"},
+    {0.99f, chars_format::general, 5, "0.99"},
+    {0.99f, chars_format::general, 6, "0.99"},
+
+    {0.9f, chars_format::general, 1, "0.9"},
+    {0.9f, chars_format::general, 2, "0.9"},
+    {0.9f, chars_format::general, 3, "0.9"},
+    {0.9f, chars_format::general, 4, "0.9"},
+    {0.9f, chars_format::general, 5, "0.9"},
+    {0.9f, chars_format::general, 6, "0.9"},
+
+    {0.0999999f, chars_format::general, 1, "0.1"},
+    {0.0999999f, chars_format::general, 2, "0.1"},
+    {0.0999999f, chars_format::general, 3, "0.1"},
+    {0.0999999f, chars_format::general, 4, "0.1"},
+    {0.0999999f, chars_format::general, 5, "0.1"},
+    {0.0999999f, chars_format::general, 6, "0.0999999"},
+
+    {0.099999f, chars_format::general, 1, "0.1"},
+    {0.099999f, chars_format::general, 2, "0.1"},
+    {0.099999f, chars_format::general, 3, "0.1"},
+    {0.099999f, chars_format::general, 4, "0.1"},
+    {0.099999f, chars_format::general, 5, "0.099999"},
+    {0.099999f, chars_format::general, 6, "0.099999"},
+
+    {0.09999f, chars_format::general, 1, "0.1"},
+    {0.09999f, chars_format::general, 2, "0.1"},
+    {0.09999f, chars_format::general, 3, "0.1"},
+    {0.09999f, chars_format::general, 4, "0.09999"},
+    {0.09999f, chars_format::general, 5, "0.09999"},
+    {0.09999f, chars_format::general, 6, "0.09999"},
+
+    {0.0999f, chars_format::general, 1, "0.1"},
+    {0.0999f, chars_format::general, 2, "0.1"},
+    {0.0999f, chars_format::general, 3, "0.0999"},
+    {0.0999f, chars_format::general, 4, "0.0999"},
+    {0.0999f, chars_format::general, 5, "0.0999"},
+    {0.0999f, chars_format::general, 6, "0.0999"},
+
+    {0.099f, chars_format::general, 1, "0.1"},
+    {0.099f, chars_format::general, 2, "0.099"},
+    {0.099f, chars_format::general, 3, "0.099"},
+    {0.099f, chars_format::general, 4, "0.099"},
+    {0.099f, chars_format::general, 5, "0.099"},
+    {0.099f, chars_format::general, 6, "0.099"},
+
+    {0.09f, chars_format::general, 1, "0.09"},
+    {0.09f, chars_format::general, 2, "0.09"},
+    {0.09f, chars_format::general, 3, "0.09"},
+    {0.09f, chars_format::general, 4, "0.09"},
+    {0.09f, chars_format::general, 5, "0.09"},
+    {0.09f, chars_format::general, 6, "0.09"},
+
+    {0.00999999f, chars_format::general, 1, "0.01"},
+    {0.00999999f, chars_format::general, 2, "0.01"},
+    {0.00999999f, chars_format::general, 3, "0.01"},
+    {0.00999999f, chars_format::general, 4, "0.01"},
+    {0.00999999f, chars_format::general, 5, "0.01"},
+    {0.00999999f, chars_format::general, 6, "0.00999999"},
+
+    {0.0099999f, chars_format::general, 1, "0.01"},
+    {0.0099999f, chars_format::general, 2, "0.01"},
+    {0.0099999f, chars_format::general, 3, "0.01"},
+    {0.0099999f, chars_format::general, 4, "0.01"},
+    {0.0099999f, chars_format::general, 5, "0.0099999"},
+    {0.0099999f, chars_format::general, 6, "0.0099999"},
+
+    {0.009999f, chars_format::general, 1, "0.01"},
+    {0.009999f, chars_format::general, 2, "0.01"},
+    {0.009999f, chars_format::general, 3, "0.01"},
+    {0.009999f, chars_format::general, 4, "0.009999"},
+    {0.009999f, chars_format::general, 5, "0.009999"},
+    {0.009999f, chars_format::general, 6, "0.009999"},
+
+    {0.00999f, chars_format::general, 1, "0.01"},
+    {0.00999f, chars_format::general, 2, "0.01"},
+    {0.00999f, chars_format::general, 3, "0.00999"},
+    {0.00999f, chars_format::general, 4, "0.00999"},
+    {0.00999f, chars_format::general, 5, "0.00999"},
+    {0.00999f, chars_format::general, 6, "0.00999"},
+
+    {0.0099f, chars_format::general, 1, "0.01"},
+    {0.0099f, chars_format::general, 2, "0.0099"},
+    {0.0099f, chars_format::general, 3, "0.0099"},
+    {0.0099f, chars_format::general, 4, "0.0099"},
+    {0.0099f, chars_format::general, 5, "0.0099"},
+    {0.0099f, chars_format::general, 6, "0.0099"},
+
+    {0.009f, chars_format::general, 1, "0.009"},
+    {0.009f, chars_format::general, 2, "0.009"},
+    {0.009f, chars_format::general, 3, "0.009"},
+    {0.009f, chars_format::general, 4, "0.009"},
+    {0.009f, chars_format::general, 5, "0.009"},
+    {0.009f, chars_format::general, 6, "0.009"},
+
+    {0.000999999f, chars_format::general, 1, "0.001"},
+    {0.000999999f, chars_format::general, 2, "0.001"},
+    {0.000999999f, chars_format::general, 3, "0.001"},
+    {0.000999999f, chars_format::general, 4, "0.001"},
+    {0.000999999f, chars_format::general, 5, "0.001"},
+    {0.000999999f, chars_format::general, 6, "0.000999999"},
+
+    {0.00099999f, chars_format::general, 1, "0.001"},
+    {0.00099999f, chars_format::general, 2, "0.001"},
+    {0.00099999f, chars_format::general, 3, "0.001"},
+    {0.00099999f, chars_format::general, 4, "0.001"},
+    {0.00099999f, chars_format::general, 5, "0.00099999"},
+    {0.00099999f, chars_format::general, 6, "0.00099999"},
+
+    {0.0009999f, chars_format::general, 1, "0.001"},
+    {0.0009999f, chars_format::general, 2, "0.001"},
+    {0.0009999f, chars_format::general, 3, "0.001"},
+    {0.0009999f, chars_format::general, 4, "0.0009999"},
+    {0.0009999f, chars_format::general, 5, "0.0009999"},
+    {0.0009999f, chars_format::general, 6, "0.0009999"},
+
+    {0.000999f, chars_format::general, 1, "0.001"},
+    {0.000999f, chars_format::general, 2, "0.001"},
+    {0.000999f, chars_format::general, 3, "0.000999"},
+    {0.000999f, chars_format::general, 4, "0.000999"},
+    {0.000999f, chars_format::general, 5, "0.000999"},
+    {0.000999f, chars_format::general, 6, "0.000999"},
+
+    {0.00099f, chars_format::general, 1, "0.001"},
+    {0.00099f, chars_format::general, 2, "0.00099"},
+    {0.00099f, chars_format::general, 3, "0.00099"},
+    {0.00099f, chars_format::general, 4, "0.00099"},
+    {0.00099f, chars_format::general, 5, "0.00099"},
+    {0.00099f, chars_format::general, 6, "0.00099"},
+
+    {0.0009f, chars_format::general, 1, "0.0009"},
+    {0.0009f, chars_format::general, 2, "0.0009"},
+    {0.0009f, chars_format::general, 3, "0.0009"},
+    {0.0009f, chars_format::general, 4, "0.0009"},
+    {0.0009f, chars_format::general, 5, "0.0009"},
+    {0.0009f, chars_format::general, 6, "0.0009"},
+
+    // Having a scientific exponent X == -5 triggers scientific notation.
+    // If rounding adjusts this to X == -4, then fixed notation will be selected.
+    {0.0000999999f, chars_format::general, 1, "0.0001"},
+    {0.0000999999f, chars_format::general, 2, "0.0001"},
+    {0.0000999999f, chars_format::general, 3, "0.0001"},
+    {0.0000999999f, chars_format::general, 4, "0.0001"},
+    {0.0000999999f, chars_format::general, 5, "0.0001"},
+    {0.0000999999f, chars_format::general, 6, "9.99999e-05"},
+
+    {0.000099999f, chars_format::general, 1, "0.0001"},
+    {0.000099999f, chars_format::general, 2, "0.0001"},
+    {0.000099999f, chars_format::general, 3, "0.0001"},
+    {0.000099999f, chars_format::general, 4, "0.0001"},
+    {0.000099999f, chars_format::general, 5, "9.9999e-05"},
+    {0.000099999f, chars_format::general, 6, "9.9999e-05"},
+
+    {0.00009999f, chars_format::general, 1, "0.0001"},
+    {0.00009999f, chars_format::general, 2, "0.0001"},
+    {0.00009999f, chars_format::general, 3, "0.0001"},
+    {0.00009999f, chars_format::general, 4, "9.999e-05"},
+    {0.00009999f, chars_format::general, 5, "9.999e-05"},
+    {0.00009999f, chars_format::general, 6, "9.999e-05"},
+
+    {0.0000999f, chars_format::general, 1, "0.0001"},
+    {0.0000999f, chars_format::general, 2, "0.0001"},
+    {0.0000999f, chars_format::general, 3, "9.99e-05"},
+    {0.0000999f, chars_format::general, 4, "9.99e-05"},
+    {0.0000999f, chars_format::general, 5, "9.99e-05"},
+    {0.0000999f, chars_format::general, 6, "9.99e-05"},
+
+    {0.000099f, chars_format::general, 1, "0.0001"},
+    {0.000099f, chars_format::general, 2, "9.9e-05"},
+    {0.000099f, chars_format::general, 3, "9.9e-05"},
+    {0.000099f, chars_format::general, 4, "9.9e-05"},
+    {0.000099f, chars_format::general, 5, "9.9e-05"},
+    {0.000099f, chars_format::general, 6, "9.9e-05"},
+
+    {0.00009f, chars_format::general, 1, "9e-05"},
+    {0.00009f, chars_format::general, 2, "9e-05"},
+    {0.00009f, chars_format::general, 3, "9e-05"},
+    {0.00009f, chars_format::general, 4, "9e-05"},
+    {0.00009f, chars_format::general, 5, "9e-05"},
+    {0.00009f, chars_format::general, 6, "9e-05"},
+
+    // Rounding test cases without exponent-adjusting behavior.
+    {2999.999f, chars_format::general, 1, "3e+03"},
+    {2999.999f, chars_format::general, 2, "3e+03"},
+    {2999.999f, chars_format::general, 3, "3e+03"},
+    {2999.999f, chars_format::general, 4, "3000"},
+    {2999.999f, chars_format::general, 5, "3000"},
+    {2999.999f, chars_format::general, 6, "3000"},
+
+    {2999.99f, chars_format::general, 1, "3e+03"},
+    {2999.99f, chars_format::general, 2, "3e+03"},
+    {2999.99f, chars_format::general, 3, "3e+03"},
+    {2999.99f, chars_format::general, 4, "3000"},
+    {2999.99f, chars_format::general, 5, "3000"},
+    {2999.99f, chars_format::general, 6, "2999.99"},
+
+    {2999.9f, chars_format::general, 1, "3e+03"},
+    {2999.9f, chars_format::general, 2, "3e+03"},
+    {2999.9f, chars_format::general, 3, "3e+03"},
+    {2999.9f, chars_format::general, 4, "3000"},
+    {2999.9f, chars_format::general, 5, "2999.9"},
+    {2999.9f, chars_format::general, 6, "2999.9"},
+
+    {2999.0f, chars_format::general, 1, "3e+03"},
+    {2999.0f, chars_format::general, 2, "3e+03"},
+    {2999.0f, chars_format::general, 3, "3e+03"},
+    {2999.0f, chars_format::general, 4, "2999"},
+    {2999.0f, chars_format::general, 5, "2999"},
+    {2999.0f, chars_format::general, 6, "2999"},
+
+    {299.999f, chars_format::general, 1, "3e+02"},
+    {299.999f, chars_format::general, 2, "3e+02"},
+    {299.999f, chars_format::general, 3, "300"},
+    {299.999f, chars_format::general, 4, "300"},
+    {299.999f, chars_format::general, 5, "300"},
+    {299.999f, chars_format::general, 6, "299.999"},
+
+    {299.99f, chars_format::general, 1, "3e+02"},
+    {299.99f, chars_format::general, 2, "3e+02"},
+    {299.99f, chars_format::general, 3, "300"},
+    {299.99f, chars_format::general, 4, "300"},
+    {299.99f, chars_format::general, 5, "299.99"},
+    {299.99f, chars_format::general, 6, "299.99"},
+
+    {299.9f, chars_format::general, 1, "3e+02"},
+    {299.9f, chars_format::general, 2, "3e+02"},
+    {299.9f, chars_format::general, 3, "300"},
+    {299.9f, chars_format::general, 4, "299.9"},
+    {299.9f, chars_format::general, 5, "299.9"},
+    {299.9f, chars_format::general, 6, "299.9"},
+
+    {299.0f, chars_format::general, 1, "3e+02"},
+    {299.0f, chars_format::general, 2, "3e+02"},
+    {299.0f, chars_format::general, 3, "299"},
+    {299.0f, chars_format::general, 4, "299"},
+    {299.0f, chars_format::general, 5, "299"},
+    {299.0f, chars_format::general, 6, "299"},
+
+    {29.999f, chars_format::general, 1, "3e+01"},
+    {29.999f, chars_format::general, 2, "30"},
+    {29.999f, chars_format::general, 3, "30"},
+    {29.999f, chars_format::general, 4, "30"},
+    {29.999f, chars_format::general, 5, "29.999"},
+    {29.999f, chars_format::general, 6, "29.999"},
+
+    {29.99f, chars_format::general, 1, "3e+01"},
+    {29.99f, chars_format::general, 2, "30"},
+    {29.99f, chars_format::general, 3, "30"},
+    {29.99f, chars_format::general, 4, "29.99"},
+    {29.99f, chars_format::general, 5, "29.99"},
+    {29.99f, chars_format::general, 6, "29.99"},
+
+    {29.9f, chars_format::general, 1, "3e+01"},
+    {29.9f, chars_format::general, 2, "30"},
+    {29.9f, chars_format::general, 3, "29.9"},
+    {29.9f, chars_format::general, 4, "29.9"},
+    {29.9f, chars_format::general, 5, "29.9"},
+    {29.9f, chars_format::general, 6, "29.9"},
+
+    {29.0f, chars_format::general, 1, "3e+01"},
+    {29.0f, chars_format::general, 2, "29"},
+    {29.0f, chars_format::general, 3, "29"},
+    {29.0f, chars_format::general, 4, "29"},
+    {29.0f, chars_format::general, 5, "29"},
+    {29.0f, chars_format::general, 6, "29"},
+
+    {2.999f, chars_format::general, 1, "3"},
+    {2.999f, chars_format::general, 2, "3"},
+    {2.999f, chars_format::general, 3, "3"},
+    {2.999f, chars_format::general, 4, "2.999"},
+    {2.999f, chars_format::general, 5, "2.999"},
+    {2.999f, chars_format::general, 6, "2.999"},
+
+    {2.99f, chars_format::general, 1, "3"},
+    {2.99f, chars_format::general, 2, "3"},
+    {2.99f, chars_format::general, 3, "2.99"},
+    {2.99f, chars_format::general, 4, "2.99"},
+    {2.99f, chars_format::general, 5, "2.99"},
+    {2.99f, chars_format::general, 6, "2.99"},
+
+    {2.9f, chars_format::general, 1, "3"},
+    {2.9f, chars_format::general, 2, "2.9"},
+    {2.9f, chars_format::general, 3, "2.9"},
+    {2.9f, chars_format::general, 4, "2.9"},
+    {2.9f, chars_format::general, 5, "2.9"},
+    {2.9f, chars_format::general, 6, "2.9"},
+
+    {2.0f, chars_format::general, 1, "2"},
+    {2.0f, chars_format::general, 2, "2"},
+    {2.0f, chars_format::general, 3, "2"},
+    {2.0f, chars_format::general, 4, "2"},
+    {2.0f, chars_format::general, 5, "2"},
+    {2.0f, chars_format::general, 6, "2"},
+
+    {0.2999f, chars_format::general, 1, "0.3"},
+    {0.2999f, chars_format::general, 2, "0.3"},
+    {0.2999f, chars_format::general, 3, "0.3"},
+    {0.2999f, chars_format::general, 4, "0.2999"},
+    {0.2999f, chars_format::general, 5, "0.2999"},
+    {0.2999f, chars_format::general, 6, "0.2999"},
+
+    {0.299f, chars_format::general, 1, "0.3"},
+    {0.299f, chars_format::general, 2, "0.3"},
+    {0.299f, chars_format::general, 3, "0.299"},
+    {0.299f, chars_format::general, 4, "0.299"},
+    {0.299f, chars_format::general, 5, "0.299"},
+    {0.299f, chars_format::general, 6, "0.299"},
+
+    {0.29f, chars_format::general, 1, "0.3"},
+    {0.29f, chars_format::general, 2, "0.29"},
+    {0.29f, chars_format::general, 3, "0.29"},
+    {0.29f, chars_format::general, 4, "0.29"},
+    {0.29f, chars_format::general, 5, "0.29"},
+    {0.29f, chars_format::general, 6, "0.29"},
+
+    {0.2f, chars_format::general, 1, "0.2"},
+    {0.2f, chars_format::general, 2, "0.2"},
+    {0.2f, chars_format::general, 3, "0.2"},
+    {0.2f, chars_format::general, 4, "0.2"},
+    {0.2f, chars_format::general, 5, "0.2"},
+    {0.2f, chars_format::general, 6, "0.2"},
+
+    {0.02999f, chars_format::general, 1, "0.03"},
+    {0.02999f, chars_format::general, 2, "0.03"},
+    {0.02999f, chars_format::general, 3, "0.03"},
+    {0.02999f, chars_format::general, 4, "0.02999"},
+    {0.02999f, chars_format::general, 5, "0.02999"},
+    {0.02999f, chars_format::general, 6, "0.02999"},
+
+    {0.0299f, chars_format::general, 1, "0.03"},
+    {0.0299f, chars_format::general, 2, "0.03"},
+    {0.0299f, chars_format::general, 3, "0.0299"},
+    {0.0299f, chars_format::general, 4, "0.0299"},
+    {0.0299f, chars_format::general, 5, "0.0299"},
+    {0.0299f, chars_format::general, 6, "0.0299"},
+
+    {0.029f, chars_format::general, 1, "0.03"},
+    {0.029f, chars_format::general, 2, "0.029"},
+    {0.029f, chars_format::general, 3, "0.029"},
+    {0.029f, chars_format::general, 4, "0.029"},
+    {0.029f, chars_format::general, 5, "0.029"},
+    {0.029f, chars_format::general, 6, "0.029"},
+
+    {0.02f, chars_format::general, 1, "0.02"},
+    {0.02f, chars_format::general, 2, "0.02"},
+    {0.02f, chars_format::general, 3, "0.02"},
+    {0.02f, chars_format::general, 4, "0.02"},
+    {0.02f, chars_format::general, 5, "0.02"},
+    {0.02f, chars_format::general, 6, "0.02"},
+
+    {0.002999f, chars_format::general, 1, "0.003"},
+    {0.002999f, chars_format::general, 2, "0.003"},
+    {0.002999f, chars_format::general, 3, "0.003"},
+    {0.002999f, chars_format::general, 4, "0.002999"},
+    {0.002999f, chars_format::general, 5, "0.002999"},
+    {0.002999f, chars_format::general, 6, "0.002999"},
+
+    {0.00299f, chars_format::general, 1, "0.003"},
+    {0.00299f, chars_format::general, 2, "0.003"},
+    {0.00299f, chars_format::general, 3, "0.00299"},
+    {0.00299f, chars_format::general, 4, "0.00299"},
+    {0.00299f, chars_format::general, 5, "0.00299"},
+    {0.00299f, chars_format::general, 6, "0.00299"},
+
+    {0.0029f, chars_format::general, 1, "0.003"},
+    {0.0029f, chars_format::general, 2, "0.0029"},
+    {0.0029f, chars_format::general, 3, "0.0029"},
+    {0.0029f, chars_format::general, 4, "0.0029"},
+    {0.0029f, chars_format::general, 5, "0.0029"},
+    {0.0029f, chars_format::general, 6, "0.0029"},
+
+    {0.002f, chars_format::general, 1, "0.002"},
+    {0.002f, chars_format::general, 2, "0.002"},
+    {0.002f, chars_format::general, 3, "0.002"},
+    {0.002f, chars_format::general, 4, "0.002"},
+    {0.002f, chars_format::general, 5, "0.002"},
+    {0.002f, chars_format::general, 6, "0.002"},
+
+    {0.0002999f, chars_format::general, 1, "0.0003"},
+    {0.0002999f, chars_format::general, 2, "0.0003"},
+    {0.0002999f, chars_format::general, 3, "0.0003"},
+    {0.0002999f, chars_format::general, 4, "0.0002999"},
+    {0.0002999f, chars_format::general, 5, "0.0002999"},
+    {0.0002999f, chars_format::general, 6, "0.0002999"},
+
+    {0.000299f, chars_format::general, 1, "0.0003"},
+    {0.000299f, chars_format::general, 2, "0.0003"},
+    {0.000299f, chars_format::general, 3, "0.000299"},
+    {0.000299f, chars_format::general, 4, "0.000299"},
+    {0.000299f, chars_format::general, 5, "0.000299"},
+    {0.000299f, chars_format::general, 6, "0.000299"},
+
+    {0.00029f, chars_format::general, 1, "0.0003"},
+    {0.00029f, chars_format::general, 2, "0.00029"},
+    {0.00029f, chars_format::general, 3, "0.00029"},
+    {0.00029f, chars_format::general, 4, "0.00029"},
+    {0.00029f, chars_format::general, 5, "0.00029"},
+    {0.00029f, chars_format::general, 6, "0.00029"},
+
+    {0.0002f, chars_format::general, 1, "0.0002"},
+    {0.0002f, chars_format::general, 2, "0.0002"},
+    {0.0002f, chars_format::general, 3, "0.0002"},
+    {0.0002f, chars_format::general, 4, "0.0002"},
+    {0.0002f, chars_format::general, 5, "0.0002"},
+    {0.0002f, chars_format::general, 6, "0.0002"},
+
+    {0.00002999f, chars_format::general, 1, "3e-05"},
+    {0.00002999f, chars_format::general, 2, "3e-05"},
+    {0.00002999f, chars_format::general, 3, "3e-05"},
+    {0.00002999f, chars_format::general, 4, "2.999e-05"},
+    {0.00002999f, chars_format::general, 5, "2.999e-05"},
+    {0.00002999f, chars_format::general, 6, "2.999e-05"},
+
+    {0.0000299f, chars_format::general, 1, "3e-05"},
+    {0.0000299f, chars_format::general, 2, "3e-05"},
+    {0.0000299f, chars_format::general, 3, "2.99e-05"},
+    {0.0000299f, chars_format::general, 4, "2.99e-05"},
+    {0.0000299f, chars_format::general, 5, "2.99e-05"},
+    {0.0000299f, chars_format::general, 6, "2.99e-05"},
+
+    {0.000029f, chars_format::general, 1, "3e-05"},
+    {0.000029f, chars_format::general, 2, "2.9e-05"},
+    {0.000029f, chars_format::general, 3, "2.9e-05"},
+    {0.000029f, chars_format::general, 4, "2.9e-05"},
+    {0.000029f, chars_format::general, 5, "2.9e-05"},
+    {0.000029f, chars_format::general, 6, "2.9e-05"},
+
+    {0.00002f, chars_format::general, 1, "2e-05"},
+    {0.00002f, chars_format::general, 2, "2e-05"},
+    {0.00002f, chars_format::general, 3, "2e-05"},
+    {0.00002f, chars_format::general, 4, "2e-05"},
+    {0.00002f, chars_format::general, 5, "2e-05"},
+    {0.00002f, chars_format::general, 6, "2e-05"},
+
+    // Test the transitions between values of the scientific exponent X.
+    // For brevity, we avoid testing all possible combinations of P and X. Instead, we test:
+    // * All values of P where some X can be affected by rounding. (For float, this is [1, 7].)
+    // * P == 25, which is arbitrary.
+    // * P == numeric_limits::max_exponent10 + 1. This selects fixed notation for numeric_limits::max(),
+    //   so it's the largest interesting value of P.
+    // * Finally, we test the transitions around X == P - 1, ensuring that we can recognize every value of X.
+    {0x1.8e7578p-14f, chars_format::general, 1, "9e-05"},
+    {0x1.8e757ap-14f, chars_format::general, 1, "0.0001"},
+    {0x1.f212d6p-11f, chars_format::general, 1, "0.0009"},
+    {0x1.f212d8p-11f, chars_format::general, 1, "0.001"},
+    {0x1.374bc6p-7f, chars_format::general, 1, "0.009"},
+    {0x1.374bc8p-7f, chars_format::general, 1, "0.01"},
+    {0x1.851eb8p-4f, chars_format::general, 1, "0.09"},
+    {0x1.851ebap-4f, chars_format::general, 1, "0.1"},
+    {0x1.e66666p-1f, chars_format::general, 1, "0.9"},
+    {0x1.e66668p-1f, chars_format::general, 1, "1"},
+    {0x1.2ffffep+3f, chars_format::general, 1, "9"},
+    {0x1.300000p+3f, chars_format::general, 1, "1e+01"},
+    {0x1.a1554ep-14f, chars_format::general, 2, "9.9e-05"},
+    {0x1.a15550p-14f, chars_format::general, 2, "0.0001"},
+    {0x1.04d550p-10f, chars_format::general, 2, "0.00099"},
+    {0x1.04d552p-10f, chars_format::general, 2, "0.001"},
+    {0x1.460aa6p-7f, chars_format::general, 2, "0.0099"},
+    {0x1.460aa8p-7f, chars_format::general, 2, "0.01"},
+    {0x1.978d4ep-4f, chars_format::general, 2, "0.099"},
+    {0x1.978d50p-4f, chars_format::general, 2, "0.1"},
+    {0x1.fd70a2p-1f, chars_format::general, 2, "0.99"},
+    {0x1.fd70a4p-1f, chars_format::general, 2, "1"},
+    {0x1.3e6666p+3f, chars_format::general, 2, "9.9"},
+    {0x1.3e6668p+3f, chars_format::general, 2, "10"},
+    {0x1.8dfffep+6f, chars_format::general, 2, "99"},
+    {0x1.8e0000p+6f, chars_format::general, 2, "1e+02"},
+    {0x1.a3387ep-14f, chars_format::general, 3, "9.99e-05"},
+    {0x1.a33880p-14f, chars_format::general, 3, "0.0001"},
+    {0x1.06034ep-10f, chars_format::general, 3, "0.000999"},
+    {0x1.060350p-10f, chars_format::general, 3, "0.001"},
+    {0x1.478422p-7f, chars_format::general, 3, "0.00999"},
+    {0x1.478424p-7f, chars_format::general, 3, "0.01"},
+    {0x1.99652ap-4f, chars_format::general, 3, "0.0999"},
+    {0x1.99652cp-4f, chars_format::general, 3, "0.1"},
+    {0x1.ffbe76p-1f, chars_format::general, 3, "0.999"},
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+    {0x1.74876ep+36f, chars_format::general, 39, "99999997952"},
+    {0x1.748770p+36f, chars_format::general, 39, "100000006144"},
+    {0x1.d1a94ap+39f, chars_format::general, 39, "999999995904"},
+    {0x1.d1a94cp+39f, chars_format::general, 39, "1000000061440"},
+    {0x1.2309cep+43f, chars_format::general, 39, "9999999827968"},
+    {0x1.2309d0p+43f, chars_format::general, 39, "10000000876544"},
+    {0x1.6bcc40p+46f, chars_format::general, 39, "99999991988224"},
+    {0x1.6bcc42p+46f, chars_format::general, 39, "100000000376832"},
+    {0x1.c6bf52p+49f, chars_format::general, 39, "999999986991104"},
+    {0x1.c6bf54p+49f, chars_format::general, 39, "1000000054099968"},
+    {0x1.1c3792p+53f, chars_format::general, 39, "9999999198822400"},
+    {0x1.1c3794p+53f, chars_format::general, 39, "10000000272564224"},
+    {0x1.634578p+56f, chars_format::general, 39, "99999998430674944"},
+    {0x1.63457ap+56f, chars_format::general, 39, "100000007020609536"},
+    {0x1.bc16d6p+59f, chars_format::general, 39, "999999984306749440"},
+    {0x1.bc16d8p+59f, chars_format::general, 39, "1000000053026226176"},
+    {0x1.158e46p+63f, chars_format::general, 39, "9999999980506447872"},
+    {0x1.158e48p+63f, chars_format::general, 39, "10000001080018075648"},
+    {0x1.5af1d6p+66f, chars_format::general, 39, "99999993207994712064"},
+    {0x1.5af1d8p+66f, chars_format::general, 39, "100000002004087734272"},
+    {0x1.b1ae4cp+69f, chars_format::general, 39, "999999949672133165056"},
+    {0x1.b1ae4ep+69f, chars_format::general, 39, "1000000020040877342720"},
+    {0x1.0f0cf0p+73f, chars_format::general, 39, "9999999778196308361216"},
+    {0x1.0f0cf2p+73f, chars_format::general, 39, "10000000904096215203840"},
+    {0x1.52d02cp+76f, chars_format::general, 39, "99999997781963083612160"},
+    {0x1.52d02ep+76f, chars_format::general, 39, "100000006789162338353152"},
+    {0x1.a78436p+79f, chars_format::general, 39, "999999941790833817157632"},
+    {0x1.a78438p+79f, chars_format::general, 39, "1000000013848427855085568"},
+    {0x1.08b2a2p+83f, chars_format::general, 39, "9999999562023526247432192"},
+    {0x1.08b2a4p+83f, chars_format::general, 39, "10000000714945030854279168"},
+    {0x1.4adf4ap+86f, chars_format::general, 39, "99999993314392253260627968"},
+    {0x1.4adf4cp+86f, chars_format::general, 39, "100000002537764290115403776"},
+    {0x1.9d971ep+89f, chars_format::general, 39, "999999988484154753734934528"},
+    {0x1.9d9720p+89f, chars_format::general, 39, "1000000062271131048573140992"},
+    {0x1.027e72p+93f, chars_format::general, 39, "9999999442119689768320106496"},
+    {0x1.027e74p+93f, chars_format::general, 39, "10000000622711310485731409920"},
+    {0x1.431e0ep+96f, chars_format::general, 39, "99999992060013656248378458112"},
+    {0x1.431e10p+96f, chars_format::general, 39, "100000001504746621987668885504"},
+    {0x1.93e592p+99f, chars_format::general, 39, "999999939489602493962365435904"},
+    {0x1.93e594p+99f, chars_format::general, 39, "1000000015047466219876688855040"},
+    {0x1.f8def8p+102f, chars_format::general, 39, "9999999848243207295109594873856"},
+    {0x1.f8defap+102f, chars_format::general, 39, "10000000452706117102424182226944"},
+    {0x1.3b8b5ap+106f, chars_format::general, 39, "99999993646728794492579249913856"},
+    {0x1.3b8b5cp+106f, chars_format::general, 39, "100000003318135351409612647563264"},
+    {0x1.8a6e32p+109f, chars_format::general, 39, "999999994495727286427992885035008"},
+    {0x1.8a6e34p+109f, chars_format::general, 39, "1000000071866979741764260066230272"},
+    {0x1.ed09bep+112f, chars_format::general, 39, "9999999790214767953607394487959552"},
+    {0x1.ed09c0p+112f, chars_format::general, 39, "10000000409184787596297531937521664"},
+    {0x1.342616p+116f, chars_format::general, 39, "99999994188327561679933120182222848"},
+    {0x1.342618p+116f, chars_format::general, 39, "100000004091847875962975319375216640"},
+    {0x1.812f9cp+119f, chars_format::general, 39, "999999961690316245365415600208216064"},
+    {0x1.812f9ep+119f, chars_format::general, 39, "1000000040918478759629753193752166400"},
+    {0x1.e17b84p+122f, chars_format::general, 39, "9999999933815812510711506376257961984"},
+    {0x1.e17b86p+122f, chars_format::general, 39, "10000000567641112624826207124609564672"},
+    {0x1.2ced32p+126f, chars_format::general, 39, "99999996802856924650656260769173209088"},
+    {0x1.2ced34p+126f, chars_format::general, 39, "100000006944061726476491472742798852096"},
+    {0x1.fffffep+127f, chars_format::general, 39, "340282346638528859811704183484516925440"},
+};
+
+#endif // FLOAT_GENERAL_PRECISION_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_hex_precision_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_hex_precision_to_chars_test_cases.hpp
new file mode 100644
index 0000000..00a2646
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_hex_precision_to_chars_test_cases.hpp
@@ -0,0 +1,106 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef FLOAT_HEX_PRECISION_TO_CHARS_TEST_CASES_HPP
+#define FLOAT_HEX_PRECISION_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr FloatPrecisionToCharsTestCase float_hex_precision_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0f, chars_format::hex, 4, "0.0000p+0"},
+    {-0.0f, chars_format::hex, 4, "-0.0000p+0"},
+    {float_inf, chars_format::hex, 4, "inf"},
+    {-float_inf, chars_format::hex, 4, "-inf"},
+    {float_nan, chars_format::hex, 4, "nan"},
+    {-float_nan, chars_format::hex, 4, "-nan(ind)"},
+    {float_nan_payload, chars_format::hex, 4, "nan"},
+    {-float_nan_payload, chars_format::hex, 4, "-nan"},
+    {0x1.729p+0f, chars_format::hex, 4, "1.7290p+0"},
+    {-0x1.729p+0f, chars_format::hex, 4, "-1.7290p+0"},
+
+    // Test hexfloat corner cases.
+    {0x1.728p+0f, chars_format::hex, 6, "1.728000p+0"},
+    {0x0.000002p-126f, chars_format::hex, 6, "0.000002p-126"}, // min subnormal
+    {0x0.fffffep-126f, chars_format::hex, 6, "0.fffffep-126"}, // max subnormal
+    {0x1p-126f, chars_format::hex, 6, "1.000000p-126"}, // min normal
+    {0x1.fffffep+127f, chars_format::hex, 6, "1.fffffep+127"}, // max normal
+
+    // Test hexfloat exponents.
+    {0x1p-109f, chars_format::hex, 0, "1p-109"},
+    {0x1p-99f, chars_format::hex, 0, "1p-99"},
+    {0x1p-9f, chars_format::hex, 0, "1p-9"},
+    {0x1p+0f, chars_format::hex, 0, "1p+0"},
+    {0x1p+9f, chars_format::hex, 0, "1p+9"},
+    {0x1p+99f, chars_format::hex, 0, "1p+99"},
+    {0x1p+109f, chars_format::hex, 0, "1p+109"},
+
+    // Test hexfloat hexits.
+    {0x1.0123p+0f, chars_format::hex, 4, "1.0123p+0"},
+    {0x1.4567p+0f, chars_format::hex, 4, "1.4567p+0"},
+    {0x1.89abp+0f, chars_format::hex, 4, "1.89abp+0"},
+    {0x1.cdefp+0f, chars_format::hex, 4, "1.cdefp+0"},
+
+    // Test varying precision. Negative precision requests full precision, not shortest round-trip.
+    {0x1.123456p+0f, chars_format::hex, -2, "1.123456p+0"},
+    {0x1.123456p+0f, chars_format::hex, -1, "1.123456p+0"},
+    {0x1.123456p+0f, chars_format::hex, 0, "1p+0"},
+    {0x1.123456p+0f, chars_format::hex, 1, "1.1p+0"},
+    {0x1.123456p+0f, chars_format::hex, 2, "1.12p+0"},
+    {0x1.123456p+0f, chars_format::hex, 3, "1.123p+0"},
+    {0x1.123456p+0f, chars_format::hex, 4, "1.1234p+0"},
+    {0x1.123456p+0f, chars_format::hex, 5, "1.12345p+0"},
+    {0x1.123456p+0f, chars_format::hex, 6, "1.123456p+0"},
+    {0x1.123456p+0f, chars_format::hex, 7, "1.1234560p+0"},
+    {0x1.123456p+0f, chars_format::hex, 8, "1.12345600p+0"},
+    {0x1.123456p+0f, chars_format::hex, 9, "1.123456000p+0"},
+
+    // Test rounding at every position.
+    {0x1.ccccccp+0f, chars_format::hex, 0, "2p+0"},
+    {0x1.ccccccp+0f, chars_format::hex, 1, "1.dp+0"},
+    {0x1.ccccccp+0f, chars_format::hex, 2, "1.cdp+0"},
+    {0x1.ccccccp+0f, chars_format::hex, 3, "1.ccdp+0"},
+    {0x1.ccccccp+0f, chars_format::hex, 4, "1.cccdp+0"},
+    {0x1.ccccccp+0f, chars_format::hex, 5, "1.ccccdp+0"},
+    {0x1.ccccccp+0f, chars_format::hex, 6, "1.ccccccp+0"},
+
+    // Test all combinations of least significant bit, round bit, and trailing bits.
+    {0x1.04000p+0f, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 0, Trailing 0
+    {0x1.04001p+0f, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 0 and Trailing 1 in different hexits
+    {0x1.04200p+0f, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 0 and Trailing 1 in same hexit
+    {0x1.04800p+0f, chars_format::hex, 2, "1.04p+0"}, // Lsb 0, Round 1, Trailing 0
+    {0x1.04801p+0f, chars_format::hex, 2, "1.05p+0"}, // Lsb 0, Round 1 and Trailing 1 in different hexits
+    {0x1.04900p+0f, chars_format::hex, 2, "1.05p+0"}, // Lsb 0, Round 1 and Trailing 1 in same hexit
+    {0x1.05000p+0f, chars_format::hex, 2, "1.05p+0"}, // Lsb 1, Round 0, Trailing 0
+    {0x1.05001p+0f, chars_format::hex, 2, "1.05p+0"}, // Lsb 1, Round 0 and Trailing 1 in different hexits
+    {0x1.05200p+0f, chars_format::hex, 2, "1.05p+0"}, // Lsb 1, Round 0 and Trailing 1 in same hexit
+    {0x1.05800p+0f, chars_format::hex, 2, "1.06p+0"}, // Lsb 1, Round 1, Trailing 0
+    {0x1.05801p+0f, chars_format::hex, 2, "1.06p+0"}, // Lsb 1, Round 1 and Trailing 1 in different hexits
+    {0x1.05900p+0f, chars_format::hex, 2, "1.06p+0"}, // Lsb 1, Round 1 and Trailing 1 in same hexit
+
+    // Test carry propagation.
+    {0x1.0afffep+0f, chars_format::hex, 5, "1.0b000p+0"},
+
+    // Test carry propagation into the leading hexit.
+    {0x0.fffffep-126f, chars_format::hex, 5, "1.00000p-126"},
+    {0x1.fffffep+127f, chars_format::hex, 5, "2.00000p+127"},
+
+    // Test how the leading hexit participates in the rounding decision.
+    {0x0.000p+0f, chars_format::hex, 0, "0p+0"},
+    {0x0.001p-126f, chars_format::hex, 0, "0p-126"},
+    {0x0.200p-126f, chars_format::hex, 0, "0p-126"},
+    {0x0.800p-126f, chars_format::hex, 0, "0p-126"},
+    {0x0.801p-126f, chars_format::hex, 0, "1p-126"},
+    {0x0.900p-126f, chars_format::hex, 0, "1p-126"},
+    {0x1.000p+0f, chars_format::hex, 0, "1p+0"},
+    {0x1.001p+0f, chars_format::hex, 0, "1p+0"},
+    {0x1.200p+0f, chars_format::hex, 0, "1p+0"},
+    {0x1.800p+0f, chars_format::hex, 0, "2p+0"},
+    {0x1.801p+0f, chars_format::hex, 0, "2p+0"},
+    {0x1.900p+0f, chars_format::hex, 0, "2p+0"},
+};
+
+#endif // FLOAT_HEX_PRECISION_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_scientific_precision_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_scientific_precision_to_chars_test_cases.hpp
new file mode 100644
index 0000000..72195f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_scientific_precision_to_chars_test_cases.hpp
@@ -0,0 +1,1093 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef FLOAT_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_HPP
+#define FLOAT_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr FloatPrecisionToCharsTestCase float_scientific_precision_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0f, chars_format::scientific, 4, "0.0000e+00"},
+    {-0.0f, chars_format::scientific, 4, "-0.0000e+00"},
+    {float_inf, chars_format::scientific, 4, "inf"},
+    {-float_inf, chars_format::scientific, 4, "-inf"},
+    {float_nan, chars_format::scientific, 4, "nan"},
+    {-float_nan, chars_format::scientific, 4, "-nan(ind)"},
+    {float_nan_payload, chars_format::scientific, 4, "nan"},
+    {-float_nan_payload, chars_format::scientific, 4, "-nan"},
+    {1.729f, chars_format::scientific, 4, "1.7290e+00"},
+    {-1.729f, chars_format::scientific, 4, "-1.7290e+00"},
+
+    // Ryu Printf Zero
+    {0.0f, chars_format::scientific, 4, "0.0000e+00"},
+    {0.0f, chars_format::scientific, 3, "0.000e+00"},
+    {0.0f, chars_format::scientific, 2, "0.00e+00"},
+    {0.0f, chars_format::scientific, 1, "0.0e+00"},
+    {0.0f, chars_format::scientific, 0, "0e+00"},
+
+    // Test corner cases.
+    {0x0.000002p-126f, chars_format::scientific, 104, // min subnormal
+        "1."
+        "40129846432481707092372958328991613128026194187651577175706828388979108268586060148663818836212158203125e-"
+        "45"},
+    {0x0.fffffep-126f, chars_format::scientific, 111, // max subnormal
+        "1."
+        "1754942106924410754870294448492873488270524287458933338571745305715888704756189042655023513361811637878417"
+        "96875e-38"},
+    {0x1p-126f, chars_format::scientific, 88, // min normal
+        "1.1754943508222875079687365372222456778186655567720875215087517062784172594547271728515625e-38"},
+    {0x1.fffffep+127f, chars_format::scientific, 37, // max normal
+        "3.4028234663852885981170418348451692544e+38"},
+
+    // Ryu Printf AllPowersOfTen
+    // These values test every power of ten that's within the range of floats.
+    {1e-44f, chars_format::scientific, 104,
+        "9."
+        "80908925027371949646610708302941291896183359313561040229947798722853757880102421040646731853485107421875e-"
+        "45"},
+    {1e-43f, chars_format::scientific, 105,
+        "9."
+        "949219096706201203558480041358404532089859787323261979475184815617516687069610270555131137371063232421875e"
+        "-44"},
+    {1e-42f, chars_format::scientific, 106,
+        "1."
+        "0005271035279193886395429224690001177341070264998322610345467546973108330377044694614596664905548095703125"
+        "e-42"},
+    {1e-41f, chars_format::scientific, 102,
+        "9.999665841421894618111734306356841512815949217230816547258439273837549166046301252208650112152099609375e-"
+        "42"},
+    {1e-40f, chars_format::scientific, 107,
+        "9."
+        "9999461011147595815259190522734994960422052696191918504127906874943271242628384243289474397897720336914062"
+        "5e-41"},
+    {1e-39f, chars_format::scientific, 107,
+        "1."
+        "0000002153053332574208756001456831092687456480096866911043660970225682715906145858753006905317306518554687"
+        "5e-39"},
+    {1e-38f, chars_format::scientific, 109,
+        "9."
+        "9999993504564039245746141539976645128551939195729831580121174560891149363239804870318039320409297943115234"
+        "375e-39"},
+    {1e-37f, chars_format::scientific, 107,
+        "9."
+        "9999999109757896545014425234894978288216464316777599086184261589164284922404135613760445266962051391601562"
+        "5e-38"},
+    {1e-36f, chars_format::scientific, 107,
+        "1."
+        "0000000359391298238442905219082964481594808441361581309103473121178279336973560020851437002420425415039062"
+        "5e-36"},
+    {1e-35f, chars_format::scientific, 104,
+        "1."
+        "00000001800250948048663201408455778204855436374880527489094543362735389990803014370612800121307373046875e-"
+        "35"},
+    {1e-34f, chars_format::scientific, 102,
+        "1.000000046701102029858885626602539647826036732368569844521988439212112353970951517112553119659423828125e-"
+        "34"},
+    {1e-33f, chars_format::scientific, 98,
+        "1.00000002374222799036108273658815415520405083747275818881715403474430559072061441838741302490234375e-33"},
+    {1e-32f, chars_format::scientific, 98,
+        "1.00000002374222799036108273658815415520405083747275818881715403474430559072061441838741302490234375e-32"},
+    {1e-31f, chars_format::scientific, 94,
+        "9.9999997966118983452530118776053400936983791927279980986387197816611660527996718883514404296875e-32"},
+    {1e-30f, chars_format::scientific, 88,
+        "1.0000000031710768509710513471352647538147514756461109453056224083411507308483123779296875e-30"},
+    {1e-29f, chars_format::scientific, 88,
+        "1.0000000031710768509710513471352647538147514756461109453056224083411507308483123779296875e-29"},
+    {1e-28f, chars_format::scientific, 88,
+        "1.0000000031710768509710513471352647538147514756461109453056224083411507308483123779296875e-28"},
+    {1e-27f, chars_format::scientific, 85,
+        "1.0000000272452011558114995103349890361263429573723815479979748488403856754302978515625e-27"},
+    {1e-26f, chars_format::scientific, 82,
+        "9.9999998872660226806678244921543018442779658661034858369021094404160976409912109375e-27"},
+    {1e-25f, chars_format::scientific, 79,
+        "1.0000000195414813782625560981110772657866336832199749551364220678806304931640625e-25"},
+    {1e-24f, chars_format::scientific, 79,
+        "1.0000000195414813782625560981110772657866336832199749551364220678806304931640625e-24"},
+    {1e-23f, chars_format::scientific, 75,
+        "9.999999998199587477372609628178631337169779413898140774108469486236572265625e-24"},
+    {1e-22f, chars_format::scientific, 75,
+        "1.000000031374394956577733179287005745028427128318071481771767139434814453125e-22"},
+    {1e-21f, chars_format::scientific, 66, "9.999999682655225388967887463487205224055287544615566730499267578125e-22"},
+    {1e-20f, chars_format::scientific, 66, "9.999999682655225388967887463487205224055287544615566730499267578125e-21"},
+    {1e-19f, chars_format::scientific, 66, "9.999999682655225388967887463487205224055287544615566730499267578125e-20"},
+    {1e-18f, chars_format::scientific, 65, "1.00000004581370496574313326554328540396454627625644207000732421875e-18"},
+    {1e-17f, chars_format::scientific, 61, "9.9999998377515902426605765018763349871733225882053375244140625e-18"},
+    {1e-16f, chars_format::scientific, 61, "1.0000000168623835263871646450439811815158464014530181884765625e-16"},
+    {1e-15f, chars_format::scientific, 58, "1.0000000036274937255387218471014421083964407444000244140625e-15"},
+    {1e-14f, chars_format::scientific, 53, "9.99999982451670044181213370393379591405391693115234375e-15"},
+    {1e-13f, chars_format::scientific, 53, "9.99999982451670044181213370393379591405391693115234375e-14"},
+    {1e-12f, chars_format::scientific, 48, "9.999999960041972002500187954865396022796630859375e-13"},
+    {1e-11f, chars_format::scientific, 48, "9.999999960041972002500187954865396022796630859375e-12"},
+    {1e-10f, chars_format::scientific, 47, "1.00000001335143196001808973960578441619873046875e-10"},
+    {1e-09f, chars_format::scientific, 43, "9.9999997171806853657471947371959686279296875e-10"},
+    {1e-08f, chars_format::scientific, 41, "9.99999993922529029077850282192230224609375e-09"},
+    {1e-07f, chars_format::scientific, 40, "1.0000000116860974230803549289703369140625e-07"},
+    {1e-06f, chars_format::scientific, 36, "9.999999974752427078783512115478515625e-07"},
+    {1e-05f, chars_format::scientific, 32, "9.99999974737875163555145263671875e-06"},
+    {1e-04f, chars_format::scientific, 32, "9.99999974737875163555145263671875e-05"},
+    {1e-03f, chars_format::scientific, 30, "1.000000047497451305389404296875e-03"},
+    {1e-02f, chars_format::scientific, 26, "9.99999977648258209228515625e-03"},
+    {1e-01f, chars_format::scientific, 26, "1.00000001490116119384765625e-01"},
+    {1e+00f, chars_format::scientific, 0, "1e+00"},
+    {1e+01f, chars_format::scientific, 0, "1e+01"},
+    {1e+02f, chars_format::scientific, 0, "1e+02"},
+    {1e+03f, chars_format::scientific, 0, "1e+03"},
+    {1e+04f, chars_format::scientific, 0, "1e+04"},
+    {1e+05f, chars_format::scientific, 0, "1e+05"},
+    {1e+06f, chars_format::scientific, 0, "1e+06"},
+    {1e+07f, chars_format::scientific, 0, "1e+07"},
+    {1e+08f, chars_format::scientific, 0, "1e+08"},
+    {1e+09f, chars_format::scientific, 0, "1e+09"},
+    {1e+10f, chars_format::scientific, 0, "1e+10"},
+    {1e+11f, chars_format::scientific, 10, "9.9999997952e+10"},
+    {1e+12f, chars_format::scientific, 11, "9.99999995904e+11"},
+    {1e+13f, chars_format::scientific, 12, "9.999999827968e+12"},
+    {1e+14f, chars_format::scientific, 14, "1.00000000376832e+14"},
+    {1e+15f, chars_format::scientific, 14, "9.99999986991104e+14"},
+    {1e+16f, chars_format::scientific, 16, "1.0000000272564224e+16"},
+    {1e+17f, chars_format::scientific, 16, "9.9999998430674944e+16"},
+    {1e+18f, chars_format::scientific, 16, "9.9999998430674944e+17"},
+    {1e+19f, chars_format::scientific, 18, "9.999999980506447872e+18"},
+    {1e+20f, chars_format::scientific, 20, "1.00000002004087734272e+20"},
+    {1e+21f, chars_format::scientific, 20, "1.00000002004087734272e+21"},
+    {1e+22f, chars_format::scientific, 21, "9.999999778196308361216e+21"},
+    {1e+23f, chars_format::scientific, 21, "9.999999778196308361216e+22"},
+    {1e+24f, chars_format::scientific, 24, "1.000000013848427855085568e+24"},
+    {1e+25f, chars_format::scientific, 24, "9.999999562023526247432192e+24"},
+    {1e+26f, chars_format::scientific, 26, "1.00000002537764290115403776e+26"},
+    {1e+27f, chars_format::scientific, 26, "9.99999988484154753734934528e+26"},
+    {1e+28f, chars_format::scientific, 27, "9.999999442119689768320106496e+27"},
+    {1e+29f, chars_format::scientific, 29, "1.00000001504746621987668885504e+29"},
+    {1e+30f, chars_format::scientific, 29, "1.00000001504746621987668885504e+30"},
+    {1e+31f, chars_format::scientific, 30, "9.999999848243207295109594873856e+30"},
+    {1e+32f, chars_format::scientific, 32, "1.00000003318135351409612647563264e+32"},
+    {1e+33f, chars_format::scientific, 32, "9.99999994495727286427992885035008e+32"},
+    {1e+34f, chars_format::scientific, 33, "9.999999790214767953607394487959552e+33"},
+    {1e+35f, chars_format::scientific, 34, "1.0000000409184787596297531937521664e+35"},
+    {1e+36f, chars_format::scientific, 35, "9.99999961690316245365415600208216064e+35"},
+    {1e+37f, chars_format::scientific, 36, "9.999999933815812510711506376257961984e+36"},
+    {1e+38f, chars_format::scientific, 37, "9.9999996802856924650656260769173209088e+37"},
+
+    // Ryu Printf RoundToEven
+    {0.125f, chars_format::scientific, 2, "1.25e-01"},
+    {0.125f, chars_format::scientific, 1, "1.2e-01"},
+    {0.375f, chars_format::scientific, 2, "3.75e-01"},
+    {0.375f, chars_format::scientific, 1, "3.8e-01"},
+
+    // Ryu Printf RoundToEvenInteger
+    {2.5f, chars_format::scientific, 1, "2.5e+00"},
+    {2.5f, chars_format::scientific, 0, "2e+00"},
+    {3.5f, chars_format::scientific, 1, "3.5e+00"},
+    {3.5f, chars_format::scientific, 0, "4e+00"},
+
+    // Ryu Printf NonRoundToEvenScenarios
+    {0.748046875f, chars_format::scientific, 2, "7.48e-01"},
+    {0.748046875f, chars_format::scientific, 1, "7.5e-01"},
+    {0.748046875f, chars_format::scientific, 0, "7e-01"}, // 0.75 would round to "8e-01", but this is smaller
+
+    {0.2509765625f, chars_format::scientific, 2, "2.51e-01"},
+    {0.2509765625f, chars_format::scientific, 1, "2.5e-01"},
+    {0.2509765625f, chars_format::scientific, 0, "3e-01"}, // 0.25 would round to "2e-01", but this is larger
+
+    {0x1.000002p-2f, chars_format::scientific, 24, "2.500000298023223876953125e-01"},
+    {0x1.000002p-2f, chars_format::scientific, 2, "2.50e-01"},
+    {0x1.000002p-2f, chars_format::scientific, 1, "2.5e-01"},
+    {0x1.000002p-2f, chars_format::scientific, 0, "3e-01"}, // 0.25 would round to "2e-01", but this is larger (again)
+
+    // More rounding tests.
+    {9.5f, chars_format::scientific, 1, "9.5e+00"},
+    {9.5f, chars_format::scientific, 0, "1e+01"},
+    {10.5f, chars_format::scientific, 2, "1.05e+01"},
+    {10.5f, chars_format::scientific, 1, "1.0e+01"},
+
+    {1.241f, chars_format::scientific, 3, "1.241e+00"},
+    {1.241f, chars_format::scientific, 1, "1.2e+00"},
+    {1.251f, chars_format::scientific, 3, "1.251e+00"},
+    {1.251f, chars_format::scientific, 1, "1.3e+00"},
+    {1.261f, chars_format::scientific, 3, "1.261e+00"},
+    {1.261f, chars_format::scientific, 1, "1.3e+00"},
+    {1.341f, chars_format::scientific, 3, "1.341e+00"},
+    {1.341f, chars_format::scientific, 1, "1.3e+00"},
+    {1.351f, chars_format::scientific, 3, "1.351e+00"},
+    {1.351f, chars_format::scientific, 1, "1.4e+00"},
+    {1.361f, chars_format::scientific, 3, "1.361e+00"},
+    {1.361f, chars_format::scientific, 1, "1.4e+00"},
+
+    {2.41f, chars_format::scientific, 2, "2.41e+00"},
+    {2.41f, chars_format::scientific, 0, "2e+00"},
+    {2.51f, chars_format::scientific, 2, "2.51e+00"},
+    {2.51f, chars_format::scientific, 0, "3e+00"},
+    {2.61f, chars_format::scientific, 2, "2.61e+00"},
+    {2.61f, chars_format::scientific, 0, "3e+00"},
+    {3.41f, chars_format::scientific, 2, "3.41e+00"},
+    {3.41f, chars_format::scientific, 0, "3e+00"},
+    {3.51f, chars_format::scientific, 2, "3.51e+00"},
+    {3.51f, chars_format::scientific, 0, "4e+00"},
+    {3.61f, chars_format::scientific, 2, "3.61e+00"},
+    {3.61f, chars_format::scientific, 0, "4e+00"},
+
+    // Ryu Printf VaryingPrecision
+    {1.142857f, chars_format::scientific, 28, "1.1428569555282592773437500000e+00"},
+    {1.142857f, chars_format::scientific, 27, "1.142856955528259277343750000e+00"},
+    {1.142857f, chars_format::scientific, 26, "1.14285695552825927734375000e+00"},
+    {1.142857f, chars_format::scientific, 25, "1.1428569555282592773437500e+00"},
+    {1.142857f, chars_format::scientific, 24, "1.142856955528259277343750e+00"},
+    {1.142857f, chars_format::scientific, 23, "1.14285695552825927734375e+00"},
+    {1.142857f, chars_format::scientific, 22, "1.1428569555282592773438e+00"},
+    {1.142857f, chars_format::scientific, 21, "1.142856955528259277344e+00"},
+    {1.142857f, chars_format::scientific, 20, "1.14285695552825927734e+00"},
+    {1.142857f, chars_format::scientific, 19, "1.1428569555282592773e+00"},
+    {1.142857f, chars_format::scientific, 18, "1.142856955528259277e+00"},
+    {1.142857f, chars_format::scientific, 17, "1.14285695552825928e+00"},
+    {1.142857f, chars_format::scientific, 16, "1.1428569555282593e+00"},
+    {1.142857f, chars_format::scientific, 15, "1.142856955528259e+00"},
+    {1.142857f, chars_format::scientific, 14, "1.14285695552826e+00"},
+    {1.142857f, chars_format::scientific, 13, "1.1428569555283e+00"},
+    {1.142857f, chars_format::scientific, 12, "1.142856955528e+00"},
+    {1.142857f, chars_format::scientific, 11, "1.14285695553e+00"},
+    {1.142857f, chars_format::scientific, 10, "1.1428569555e+00"},
+    {1.142857f, chars_format::scientific, 9, "1.142856956e+00"},
+    {1.142857f, chars_format::scientific, 8, "1.14285696e+00"},
+    {1.142857f, chars_format::scientific, 7, "1.1428570e+00"},
+    {1.142857f, chars_format::scientific, 6, "1.142857e+00"},
+    {1.142857f, chars_format::scientific, 5, "1.14286e+00"},
+    {1.142857f, chars_format::scientific, 4, "1.1429e+00"},
+    {1.142857f, chars_format::scientific, 3, "1.143e+00"},
+    {1.142857f, chars_format::scientific, 2, "1.14e+00"},
+    {1.142857f, chars_format::scientific, 1, "1.1e+00"},
+    {1.142857f, chars_format::scientific, 0, "1e+00"},
+
+    // Negative precision requests 6 digits of precision.
+    {1.142857f, chars_format::scientific, -1, "1.142857e+00"},
+    {1.142857f, chars_format::scientific, -2, "1.142857e+00"},
+    {1.142857f, chars_format::scientific, -3, "1.142857e+00"},
+
+    // Ryu Printf Carrying
+    {2.0009f, chars_format::scientific, 4, "2.0009e+00"},
+    {2.0009f, chars_format::scientific, 3, "2.001e+00"},
+    {2.0029f, chars_format::scientific, 4, "2.0029e+00"},
+    {2.0029f, chars_format::scientific, 3, "2.003e+00"},
+    {2.0099f, chars_format::scientific, 4, "2.0099e+00"},
+    {2.0099f, chars_format::scientific, 3, "2.010e+00"},
+    {2.0299f, chars_format::scientific, 4, "2.0299e+00"},
+    {2.0299f, chars_format::scientific, 3, "2.030e+00"},
+    {2.0999f, chars_format::scientific, 4, "2.0999e+00"},
+    {2.0999f, chars_format::scientific, 3, "2.100e+00"},
+    {2.2999f, chars_format::scientific, 4, "2.2999e+00"},
+    {2.2999f, chars_format::scientific, 3, "2.300e+00"},
+    {2.9999f, chars_format::scientific, 4, "2.9999e+00"},
+    {2.9999f, chars_format::scientific, 3, "3.000e+00"},
+    {9.9999f, chars_format::scientific, 4, "9.9999e+00"},
+    {9.9999f, chars_format::scientific, 3, "1.000e+01"},
+
+    {2.09f, chars_format::scientific, 2, "2.09e+00"},
+    {2.09f, chars_format::scientific, 1, "2.1e+00"},
+    {2.29f, chars_format::scientific, 2, "2.29e+00"},
+    {2.29f, chars_format::scientific, 1, "2.3e+00"},
+    {2.99f, chars_format::scientific, 2, "2.99e+00"},
+    {2.99f, chars_format::scientific, 1, "3.0e+00"},
+    {9.99f, chars_format::scientific, 2, "9.99e+00"},
+    {9.99f, chars_format::scientific, 1, "1.0e+01"},
+
+    {2.9f, chars_format::scientific, 1, "2.9e+00"},
+    {2.9f, chars_format::scientific, 0, "3e+00"},
+    {9.9f, chars_format::scientific, 1, "9.9e+00"},
+    {9.9f, chars_format::scientific, 0, "1e+01"},
+
+    // Ryu Printf Exponents
+    {9.99e-10f, chars_format::scientific, 2, "9.99e-10"},
+    {9.99e-09f, chars_format::scientific, 2, "9.99e-09"},
+    {9.99e-01f, chars_format::scientific, 2, "9.99e-01"},
+    {9.99e+00f, chars_format::scientific, 2, "9.99e+00"},
+    {9.99e+01f, chars_format::scientific, 2, "9.99e+01"},
+    {9.99e+09f, chars_format::scientific, 2, "9.99e+09"},
+    {9.99e+10f, chars_format::scientific, 2, "9.99e+10"},
+
+    {9.99e-10f, chars_format::scientific, 1, "1.0e-09"},
+    {9.99e-09f, chars_format::scientific, 1, "1.0e-08"},
+    {9.99e-01f, chars_format::scientific, 1, "1.0e+00"},
+    {9.99e+00f, chars_format::scientific, 1, "1.0e+01"},
+    {9.99e+01f, chars_format::scientific, 1, "1.0e+02"},
+    {9.99e+09f, chars_format::scientific, 1, "1.0e+10"},
+    {9.99e+10f, chars_format::scientific, 1, "1.0e+11"},
+
+    // Ryu Printf AllBinaryExponents
+    // These values test every binary exponent.
+    // The mantissas were randomly generated.
+    {0x0.bafab0p-126f, chars_format::scientific, 107,
+        "8."
+        "5856660078164374052571520381239855817217629811131320365461649230225810169869760102301370352506637573242187"
+        "5e-39"},
+    {0x1.2c4906p-126f, chars_format::scientific, 111,
+        "1."
+        "3788422360444725799170555395988202383016563601793620435599297375199720136484948795896343654021620750427246"
+        "09375e-38"},
+    {0x1.da6c8cp-125f, chars_format::scientific, 109,
+        "4."
+        "3568964460614492296234103491671745446178474818057230651136547036595368653788540314053534530103206634521484"
+        "375e-38"},
+    {0x1.094fd8p-124f, chars_format::scientific, 107,
+        "4."
+        "8730098044956940648689859309723501868625857818278160902221179289536129308757494982273783534765243530273437"
+        "5e-38"},
+    {0x1.1fba2ap-123f, chars_format::scientific, 109,
+        "1."
+        "0569428191822507939881039060004188252129978601750040353991776209794002661102041429330711252987384796142578"
+        "125e-37"},
+    {0x1.05c066p-122f, chars_format::scientific, 108,
+        "1."
+        "9230467241438048605749036664954171842721044312192826420869210321670447760844524509593611583113670349121093"
+        "75e-37"},
+    {0x1.aa97aep-121f, chars_format::scientific, 107,
+        "6."
+        "2682134052278382034317570078635218253248121012038564692208751497667224006349329101794864982366561889648437"
+        "5e-37"},
+    {0x1.dd39a8p-120f, chars_format::scientific, 105,
+        "1."
+        "402438874646247750851657016594307463985884969771101485328502708228859408023936339304782450199127197265625e"
+        "-36"},
+    {0x1.d47ee4p-119f, chars_format::scientific, 105,
+        "2."
+        "753570046800320919541684228734204622774621916697559471583583415484064449429979504202492535114288330078125e"
+        "-36"},
+    {0x1.3d3c36p-118f, chars_format::scientific, 105,
+        "3."
+        "729081842766376549743290774072513136892856721536744273788293430570150999159295679419301450252532958984375e"
+        "-36"},
+    {0x1.1661f4p-117f, chars_format::scientific, 103,
+        "6."
+        "5447441644065192772010189083715139205202243608571574700187600294454259852727773250080645084381103515625e-"
+        "36"},
+    {0x1.b68df4p-116f, chars_format::scientific, 103,
+        "2."
+        "0620733697737581832019236718658803118114911610758483179403903647053386549714559805579483509063720703125e-"
+        "35"},
+    {0x1.d99cbcp-115f, chars_format::scientific, 102,
+        "4.453828135148790991673442414370889923378622963993538561236896870798585013062620419077575206756591796875e-"
+        "35"},
+    {0x1.fd046ep-114f, chars_format::scientific, 102,
+        "9.573551435136219346253356313052326716805272442482100391194957227092299234527672524563968181610107421875e-"
+        "35"},
+    {0x1.89834cp-113f, chars_format::scientific, 101,
+        "1.48023092977964777039833097802364118989950189925000614428441357561805347131667076610028743743896484375e-"
+        "34"},
+    {0x1.44f9f6p-112f, chars_format::scientific, 101,
+        "2.44485077761403269855863218622241304191185681346184344636825701291282797456005937419831752777099609375e-"
+        "34"},
+    {0x1.610156p-111f, chars_format::scientific, 100,
+        "5.3114321941046389584918230189833796378476189953948627677188069895475308612731168977916240692138671875e-"
+        "34"},
+    {0x1.1c4ce0p-110f, chars_format::scientific, 95,
+        "8.55535074104030543315341178235051098966105705542347053919882693406862017582170665264129638671875e-34"},
+    {0x1.c8846ap-109f, chars_format::scientific, 99,
+        "2.747563210400574676694231398741237029228255561600948508123483382536988983702030964195728302001953125e-"
+        "33"},
+    {0x1.49aaa6p-108f, chars_format::scientific, 98,
+        "3.96821729911656973098277999199730227135040686156682094762847279323381144422455690801143646240234375e-33"},
+    {0x1.f5603cp-107f, chars_format::scientific, 97,
+        "1.2070186113858457615715036175854047096256968023404067681496332209434285687166266143321990966796875e-32"},
+    {0x1.b7bbf8p-106f, chars_format::scientific, 95,
+        "2.11724341322508937840915176712265363597160619557838059749677039889093066449277102947235107421875e-32"},
+    {0x1.6d305cp-105f, chars_format::scientific, 95,
+        "3.51664122601460292174574136500884378151845989294218826175242309517443572985939681529998779296875e-32"},
+    {0x1.dd9944p-104f, chars_format::scientific, 94,
+        "9.1982162588143308372426801228237163172804681524337790977929874003393706516362726688385009765625e-32"},
+    {0x1.0f4254p-103f, chars_format::scientific, 94,
+        "1.0448520245617299544506055022011322932281191403904399041258077573957052663899958133697509765625e-31"},
+    {0x1.049450p-102f, chars_format::scientific, 91,
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+    {0x1.c763f6p+53f, chars_format::scientific, 15, "1.602262782705664e+16"},
+    {0x1.8b669ep+54f, chars_format::scientific, 15, "2.782386114789376e+16"},
+    {0x1.73e5b6p+55f, chars_format::scientific, 16, "5.2339893103230976e+16"},
+    {0x1.a13d18p+56f, chars_format::scientific, 17, "1.17442238576852992e+17"},
+    {0x1.a0797ep+57f, chars_format::scientific, 17, "2.34454344768946176e+17"},
+    {0x1.c07a80p+58f, chars_format::scientific, 17, "5.04941918963105792e+17"},
+    {0x1.729388p+59f, chars_format::scientific, 17, "8.34463629662224384e+17"},
+    {0x1.edfb70p+60f, chars_format::scientific, 18, "2.224697951572197376e+18"},
+    {0x1.3d6782p+61f, chars_format::scientific, 17, "2.85892402114199552e+18"},
+    {0x1.b121e8p+62f, chars_format::scientific, 18, "7.802620494837972992e+18"},
+    {0x1.0efc5ap+63f, chars_format::scientific, 18, "9.763290520209063936e+18"},
+    {0x1.b7dba0p+64f, chars_format::scientific, 19, "3.1695102724410441728e+19"},
+    {0x1.ec2306p+65f, chars_format::scientific, 19, "7.0924388975830368256e+19"},
+    {0x1.2e2d28p+66f, chars_format::scientific, 19, "8.7096415015485308928e+19"},
+    {0x1.e02208p+67f, chars_format::scientific, 20, "2.76777792668052750336e+20"},
+    {0x1.402636p+68f, chars_format::scientific, 20, "3.69106968238077509632e+20"},
+    {0x1.11f97cp+69f, chars_format::scientific, 20, "6.31742296991907971072e+20"},
+    {0x1.74db2ap+70f, chars_format::scientific, 21, "1.719495307615820316672e+21"},
+    {0x1.94a32ap+71f, chars_format::scientific, 21, "3.732120907777931476992e+21"},
+    {0x1.c272dcp+72f, chars_format::scientific, 21, "8.309311323384498356224e+21"},
+    {0x1.36ca40p+73f, chars_format::scientific, 22, "1.1466128622488263852032e+22"},
+    {0x1.5f6fbep+74f, chars_format::scientific, 22, "2.5931436172223350571008e+22"},
+    {0x1.95ec4ep+75f, chars_format::scientific, 22, "5.9903671176748022628352e+22"},
+    {0x1.6b3912p+76f, chars_format::scientific, 23, "1.07204487170660958732288e+23"},
+    {0x1.10992ap+77f, chars_format::scientific, 23, "1.60913632700346331561984e+23"},
+    {0x1.74a25ep+78f, chars_format::scientific, 23, "4.39928869395322133020672e+23"},
+    {0x1.43f462p+79f, chars_format::scientific, 22, "7.6491622058254812577792e+23"},
+    {0x1.f12ca2p+80f, chars_format::scientific, 24, "2.347839472055691035803648e+24"},
+    {0x1.2b7f18p+81f, chars_format::scientific, 22, "2.8286640885152838844416e+24"},
+    {0x1.a40704p+82f, chars_format::scientific, 24, "7.934093352976572433301504e+24"},
+    {0x1.35d5f8p+83f, chars_format::scientific, 23, "1.17052661598219352932352e+25"},
+    {0x1.c2c9d2p+84f, chars_format::scientific, 25, "3.4060605519118462894473216e+25"},
+    {0x1.47bf20p+85f, chars_format::scientific, 23, "4.95276631635027751337984e+25"},
+    {0x1.60b728p+86f, chars_format::scientific, 25, "1.0660170486011939073818624e+26"},
+    {0x1.3354c8p+87f, chars_format::scientific, 26, "1.85770297377533474371534848e+26"},
+    {0x1.e9e512p+88f, chars_format::scientific, 26, "5.92246479757524141957185536e+26"},
+    {0x1.c4b6cap+89f, chars_format::scientific, 27, "1.094595334815995103451021312e+27"},
+    {0x1.799cb8p+90f, chars_format::scientific, 27, "1.826020469467809704300249088e+27"},
+    {0x1.1afa36p+91f, chars_format::scientific, 27, "2.736789351009782551090823168e+27"},
+    {0x1.80c214p+92f, chars_format::scientific, 27, "7.442304364233212615194574848e+27"},
+    {0x1.657890p+93f, chars_format::scientific, 28, "1.3828987453168434783077793792e+28"},
+    {0x1.5ce17cp+94f, chars_format::scientific, 28, "2.6993344325171312829134798848e+28"},
+    {0x1.3f1e9ap+95f, chars_format::scientific, 28, "4.9381356576017938861904625664e+28"},
+    {0x1.874612p+96f, chars_format::scientific, 29, "1.21093348650115637567232671744e+29"},
+    {0x1.5f4d5ep+97f, chars_format::scientific, 29, "2.17445539275703670631001227264e+29"},
+    {0x1.45b1bep+98f, chars_format::scientific, 29, "4.03190021246562727728269754368e+29"},
+    {0x1.a570f4p+99f, chars_format::scientific, 30, "1.043437928672039460753056464896e+30"},
+    {0x1.f5106ep+100f, chars_format::scientific, 30, "2.481149635102733266542145830912e+30"},
+    {0x1.d84424p+101f, chars_format::scientific, 30, "4.677097651091265616934539886592e+30"},
+    {0x1.3d6c56p+102f, chars_format::scientific, 30, "6.287213966425746785671183335424e+30"},
+    {0x1.9d8cf0p+103f, chars_format::scientific, 31, "1.6382424580981433623378525159424e+31"},
+    {0x1.e2e73ep+104f, chars_format::scientific, 29, "3.82595403225449575379724402688e+31"},
+    {0x1.2d6594p+105f, chars_format::scientific, 30, "4.775822764761364886543157690368e+31"},
+    {0x1.ce43bap+106f, chars_format::scientific, 31, "1.4649748574980240963539344293888e+32"},
+    {0x1.b3ea00p+107f, chars_format::scientific, 32, "2.76293361488025452794185737306112e+32"},
+    {0x1.03a052p+108f, chars_format::scientific, 32, "3.29115373194929392757058784198656e+32"},
+    {0x1.6f59e0p+109f, chars_format::scientific, 31, "9.3134561945576656911623262306304e+32"},
+    {0x1.05adacp+110f, chars_format::scientific, 33, "1.326867152522435745601434087849984e+33"},
+    {0x1.2cdef0p+111f, chars_format::scientific, 33, "3.051192904788012466473218045116416e+33"},
+    {0x1.e81552p+112f, chars_format::scientific, 33, "9.899505055765620068271358482579456e+33"},
+    {0x1.bfa8f4p+113f, chars_format::scientific, 34, "1.8159245876954178992833811110166528e+34"},
+    {0x1.a14810p+114f, chars_format::scientific, 33, "3.385389673673572296245535418875904e+34"},
+    {0x1.f18b10p+115f, chars_format::scientific, 34, "8.0731001914916160681187088757948416e+34"},
+    {0x1.8d6e30p+116f, chars_format::scientific, 32, "1.28973545052908058560090358153216e+35"},
+    {0x1.9480c2p+117f, chars_format::scientific, 35, "2.62537431192608192877759864086986752e+35"},
+    {0x1.60975cp+118f, chars_format::scientific, 34, "4.5768960676134050994895233721827328e+35"},
+    {0x1.ab1bb2p+119f, chars_format::scientific, 36, "1.108836243133298765768030079592431616e+36"},
+    {0x1.6a0c80p+120f, chars_format::scientific, 36, "1.879864992909653247408339011818749952e+36"},
+    {0x1.2cac2cp+121f, chars_format::scientific, 36, "3.122362236102854007005843883842076672e+36"},
+    {0x1.0baaf6p+122f, chars_format::scientific, 36, "5.559243043957593079267046257728684032e+36"},
+    {0x1.098282p+123f, chars_format::scientific, 35, "1.10288454433706471446366546449924096e+37"},
+    {0x1.122f8ap+124f, chars_format::scientific, 37, "2.2778456735621461875293910785310326784e+37"},
+    {0x1.57f4c6p+125f, chars_format::scientific, 36, "5.714951736310127067226390054203031552e+37"},
+    {0x1.05e028p+126f, chars_format::scientific, 36, "8.702309817313974757087535795024166912e+37"},
+    {0x1.9d8424p+127f, chars_format::scientific, 38, "2.74828637805621292108186801756142829568e+38"},
+
+    // Ryu Printf PrintDecimalPoint
+    // These values exercise each codepath.
+    {0x1.59bc8cp+92f, chars_format::scientific, 0, "7e+27"},
+    {0x1.59bc8cp+92f, chars_format::scientific, 1, "6.7e+27"},
+    {0x1.37da7cp-30f, chars_format::scientific, 0, "1e-09"},
+    {0x1.37da7cp-30f, chars_format::scientific, 1, "1.1e-09"},
+    {0x1.834c98p+29f, chars_format::scientific, 0, "8e+08"},
+    {0x1.834c98p+29f, chars_format::scientific, 1, "8.1e+08"},
+
+    // Test the maximum mantissa, which generates the most digits for each exponent.
+    {0x0.fffffep-126f, chars_format::scientific, 111,
+        "1."
+        "1754942106924410754870294448492873488270524287458933338571745305715888704756189042655023513361811637878417"
+        "96875e-38"},
+    {0x1.fffffep-126f, chars_format::scientific, 111,
+        "2."
+        "3509885615147285834557659820715330266457179855179808553659262368500061299303460771170648513361811637878417"
+        "96875e-38"},
+    {0x1.fffffep-125f, chars_format::scientific, 110,
+        "4."
+        "7019771230294571669115319641430660532914359710359617107318524737000122598606921542341297026723623275756835"
+        "9375e-38"},
+    {0x1.fffffep-124f, chars_format::scientific, 109,
+        "9."
+        "4039542460589143338230639282861321065828719420719234214637049474000245197213843084682594053447246551513671"
+        "875e-38"},
+    {0x1.fffffep-123f, chars_format::scientific, 109,
+        "1."
+        "8807908492117828667646127856572264213165743884143846842927409894800049039442768616936518810689449310302734"
+        "375e-37"},
+    {0x1.fffffep-122f, chars_format::scientific, 108,
+        "3."
+        "7615816984235657335292255713144528426331487768287693685854819789600098078885537233873037621378898620605468"
+        "75e-37"},
+    {0x1.fffffep-121f, chars_format::scientific, 107,
+        "7."
+        "5231633968471314670584511426289056852662975536575387371709639579200196157771074467746075242757797241210937"
+        "5e-37"},
+    {0x1.fffffep-120f, chars_format::scientific, 107,
+        "1."
+        "5046326793694262934116902285257811370532595107315077474341927915840039231554214893549215048551559448242187"
+        "5e-36"},
+    {0x1.fffffep-119f, chars_format::scientific, 106,
+        "3."
+        "0092653587388525868233804570515622741065190214630154948683855831680078463108429787098430097103118896484375"
+        "e-36"},
+    {0x1.fffffep-118f, chars_format::scientific, 105,
+        "6."
+        "018530717477705173646760914103124548213038042926030989736771166336015692621685957419686019420623779296875e"
+        "-36"},
+    {0x1.fffffep-117f, chars_format::scientific, 105,
+        "1."
+        "203706143495541034729352182820624909642607608585206197947354233267203138524337191483937203884124755859375e"
+        "-35"},
+    {0x1.fffffep-116f, chars_format::scientific, 104,
+        "2."
+        "40741228699108206945870436564124981928521521717041239589470846653440627704867438296787440776824951171875e-"
+        "35"},
+    {0x1.fffffep-115f, chars_format::scientific, 103,
+        "4."
+        "8148245739821641389174087312824996385704304343408247917894169330688125540973487659357488155364990234375e-"
+        "35"},
+    {0x1.fffffep-114f, chars_format::scientific, 102,
+        "9.629649147964328277834817462564999277140860868681649583578833866137625108194697531871497631072998046875e-"
+        "35"},
+    {0x1.fffffep-113f, chars_format::scientific, 102,
+        "1.925929829592865655566963492512999855428172173736329916715766773227525021638939506374299526214599609375e-"
+        "34"},
+    {0x1.fffffep-112f, chars_format::scientific, 101,
+        "3.85185965918573131113392698502599971085634434747265983343153354645505004327787901274859905242919921875e-"
+        "34"},
+    {0x1.fffffep-111f, chars_format::scientific, 100,
+        "7.7037193183714626222678539700519994217126886949453196668630670929101000865557580254971981048583984375e-"
+        "34"},
+    {0x1.fffffep-110f, chars_format::scientific, 100,
+        "1.5407438636742925244535707940103998843425377389890639333726134185820200173111516050994396209716796875e-"
+        "33"},
+    {0x1.fffffep-109f, chars_format::scientific, 99,
+        "3.081487727348585048907141588020799768685075477978127866745226837164040034622303210198879241943359375e-"
+        "33"},
+    {0x1.fffffep-108f, chars_format::scientific, 98,
+        "6.16297545469717009781428317604159953737015095595625573349045367432808006924460642039775848388671875e-33"},
+    {0x1.fffffep-107f, chars_format::scientific, 98,
+        "1.23259509093943401956285663520831990747403019119125114669809073486561601384892128407955169677734375e-32"},
+    {0x1.fffffep-106f, chars_format::scientific, 97,
+        "2.4651901818788680391257132704166398149480603823825022933961814697312320276978425681591033935546875e-32"},
+    {0x1.fffffep-105f, chars_format::scientific, 96,
+        "4.930380363757736078251426540833279629896120764765004586792362939462464055395685136318206787109375e-32"},
+    {0x1.fffffep-104f, chars_format::scientific, 95,
+        "9.86076072751547215650285308166655925979224152953000917358472587892492811079137027263641357421875e-32"},
+    {0x1.fffffep-103f, chars_format::scientific, 95,
+        "1.97215214550309443130057061633331185195844830590600183471694517578498562215827405452728271484375e-31"},
+    {0x1.fffffep-102f, chars_format::scientific, 94,
+        "3.9443042910061888626011412326666237039168966118120036694338903515699712443165481090545654296875e-31"},
+    {0x1.fffffep-101f, chars_format::scientific, 93,
+        "7.888608582012377725202282465333247407833793223624007338867780703139942488633096218109130859375e-31"},
+    {0x1.fffffep-100f, chars_format::scientific, 93,
+        "1.577721716402475545040456493066649481566758644724801467773556140627988497726619243621826171875e-30"},
+    {0x1.fffffep-99f, chars_format::scientific, 92,
+        "3.15544343280495109008091298613329896313351728944960293554711228125597699545323848724365234375e-30"},
+    {0x1.fffffep-98f, chars_format::scientific, 91,
+        "6.3108868656099021801618259722665979262670345788992058710942245625119539909064769744873046875e-30"},
+    {0x1.fffffep-97f, chars_format::scientific, 91,
+        "1.2621773731219804360323651944533195852534069157798411742188449125023907981812953948974609375e-29"},
+    {0x1.fffffep-96f, chars_format::scientific, 90,
+        "2.524354746243960872064730388906639170506813831559682348437689825004781596362590789794921875e-29"},
+    {0x1.fffffep-95f, chars_format::scientific, 89,
+        "5.04870949248792174412946077781327834101362766311936469687537965000956319272518157958984375e-29"},
+    {0x1.fffffep-94f, chars_format::scientific, 89,
+        "1.00974189849758434882589215556265566820272553262387293937507593000191263854503631591796875e-28"},
+    {0x1.fffffep-93f, chars_format::scientific, 88,
+        "2.0194837969951686976517843111253113364054510652477458787501518600038252770900726318359375e-28"},
+    {0x1.fffffep-92f, chars_format::scientific, 87,
+        "4.038967593990337395303568622250622672810902130495491757500303720007650554180145263671875e-28"},
+    {0x1.fffffep-91f, chars_format::scientific, 86,
+        "8.07793518798067479060713724450124534562180426099098351500060744001530110836029052734375e-28"},
+    {0x1.fffffep-90f, chars_format::scientific, 86,
+        "1.61558703759613495812142744890024906912436085219819670300012148800306022167205810546875e-27"},
+    {0x1.fffffep-89f, chars_format::scientific, 85,
+        "3.2311740751922699162428548978004981382487217043963934060002429760061204433441162109375e-27"},
+    {0x1.fffffep-88f, chars_format::scientific, 84,
+        "6.462348150384539832485709795600996276497443408792786812000485952012240886688232421875e-27"},
+    {0x1.fffffep-87f, chars_format::scientific, 84,
+        "1.292469630076907966497141959120199255299488681758557362400097190402448177337646484375e-26"},
+    {0x1.fffffep-86f, chars_format::scientific, 83,
+        "2.58493926015381593299428391824039851059897736351711472480019438080489635467529296875e-26"},
+    {0x1.fffffep-85f, chars_format::scientific, 82,
+        "5.1698785203076318659885678364807970211979547270342294496003887616097927093505859375e-26"},
+    {0x1.fffffep-84f, chars_format::scientific, 82,
+        "1.0339757040615263731977135672961594042395909454068458899200777523219585418701171875e-25"},
+    {0x1.fffffep-83f, chars_format::scientific, 81,
+        "2.067951408123052746395427134592318808479181890813691779840155504643917083740234375e-25"},
+    {0x1.fffffep-82f, chars_format::scientific, 80,
+        "4.13590281624610549279085426918463761695836378162738355968031100928783416748046875e-25"},
+    {0x1.fffffep-81f, chars_format::scientific, 79,
+        "8.2718056324922109855817085383692752339167275632547671193606220185756683349609375e-25"},
+    {0x1.fffffep-80f, chars_format::scientific, 79,
+        "1.6543611264984421971163417076738550467833455126509534238721244037151336669921875e-24"},
+    {0x1.fffffep-79f, chars_format::scientific, 78,
+        "3.308722252996884394232683415347710093566691025301906847744248807430267333984375e-24"},
+    {0x1.fffffep-78f, chars_format::scientific, 77,
+        "6.61744450599376878846536683069542018713338205060381369548849761486053466796875e-24"},
+    {0x1.fffffep-77f, chars_format::scientific, 77,
+        "1.32348890119875375769307336613908403742667641012076273909769952297210693359375e-23"},
+    {0x1.fffffep-76f, chars_format::scientific, 76,
+        "2.6469778023975075153861467322781680748533528202415254781953990459442138671875e-23"},
+    {0x1.fffffep-75f, chars_format::scientific, 75,
+        "5.293955604795015030772293464556336149706705640483050956390798091888427734375e-23"},
+    {0x1.fffffep-74f, chars_format::scientific, 75,
+        "1.058791120959003006154458692911267229941341128096610191278159618377685546875e-22"},
+    {0x1.fffffep-73f, chars_format::scientific, 74,
+        "2.11758224191800601230891738582253445988268225619322038255631923675537109375e-22"},
+    {0x1.fffffep-72f, chars_format::scientific, 73,
+        "4.2351644838360120246178347716450689197653645123864407651126384735107421875e-22"},
+    {0x1.fffffep-71f, chars_format::scientific, 72,
+        "8.470328967672024049235669543290137839530729024772881530225276947021484375e-22"},
+    {0x1.fffffep-70f, chars_format::scientific, 72,
+        "1.694065793534404809847133908658027567906145804954576306045055389404296875e-21"},
+    {0x1.fffffep-69f, chars_format::scientific, 71,
+        "3.38813158706880961969426781731605513581229160990915261209011077880859375e-21"},
+    {0x1.fffffep-68f, chars_format::scientific, 70,
+        "6.7762631741376192393885356346321102716245832198183052241802215576171875e-21"},
+    {0x1.fffffep-67f, chars_format::scientific, 70,
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+    {0x1.fffffep+117f, chars_format::scientific, 34, "3.3230697913918833965986736668409856e+35"},
+    {0x1.fffffep+118f, chars_format::scientific, 34, "6.6461395827837667931973473336819712e+35"},
+    {0x1.fffffep+119f, chars_format::scientific, 35, "1.32922791655675335863946946673639424e+36"},
+    {0x1.fffffep+120f, chars_format::scientific, 35, "2.65845583311350671727893893347278848e+36"},
+    {0x1.fffffep+121f, chars_format::scientific, 35, "5.31691166622701343455787786694557696e+36"},
+    {0x1.fffffep+122f, chars_format::scientific, 36, "1.063382333245402686911575573389115392e+37"},
+    {0x1.fffffep+123f, chars_format::scientific, 36, "2.126764666490805373823151146778230784e+37"},
+    {0x1.fffffep+124f, chars_format::scientific, 36, "4.253529332981610747646302293556461568e+37"},
+    {0x1.fffffep+125f, chars_format::scientific, 36, "8.507058665963221495292604587112923136e+37"},
+    {0x1.fffffep+126f, chars_format::scientific, 37, "1.7014117331926442990585209174225846272e+38"},
+    {0x1.fffffep+127f, chars_format::scientific, 37, "3.4028234663852885981170418348451692544e+38"},
+};
+
+#endif // FLOAT_SCIENTIFIC_PRECISION_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_to_chars_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_to_chars_test_cases.hpp
new file mode 100644
index 0000000..65ed05b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/float_to_chars_test_cases.hpp
@@ -0,0 +1,541 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+
+// Copyright 2018 Ulf Adams
+// Copyright (c) Microsoft Corporation. All rights reserved.
+
+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+
+// This file contains test cases derived from:
+// https://github.com/ulfjack/ryu
+// See xcharconv_ryu.h for the exact commit.
+// (Keep the cgmanifest.json commitHash in sync.)
+
+
+#ifndef FLOAT_TO_CHARS_TEST_CASES_HPP
+#define FLOAT_TO_CHARS_TEST_CASES_HPP
+
+#include <charconv>
+
+#include "test.hpp"
+using namespace std;
+
+inline constexpr FloatToCharsTestCase float_to_chars_test_cases[] = {
+    // Test special cases (zero, inf, nan) and an ordinary case. Also test negative signs.
+    {0.0f, chars_format::scientific, "0e+00"},
+    {-0.0f, chars_format::scientific, "-0e+00"},
+    {float_inf, chars_format::scientific, "inf"},
+    {-float_inf, chars_format::scientific, "-inf"},
+    {float_nan, chars_format::scientific, "nan"},
+    {-float_nan, chars_format::scientific, "-nan(ind)"},
+    {float_nan_payload, chars_format::scientific, "nan"},
+    {-float_nan_payload, chars_format::scientific, "-nan"},
+    {2.018f, chars_format::scientific, "2.018e+00"},
+    {-2.018f, chars_format::scientific, "-2.018e+00"},
+
+    // Ditto for fixed, which doesn't emit exponents.
+    {0.0f, chars_format::fixed, "0"},
+    {-0.0f, chars_format::fixed, "-0"},
+    {float_inf, chars_format::fixed, "inf"},
+    {-float_inf, chars_format::fixed, "-inf"},
+    {float_nan, chars_format::fixed, "nan"},
+    {-float_nan, chars_format::fixed, "-nan(ind)"},
+    {float_nan_payload, chars_format::fixed, "nan"},
+    {-float_nan_payload, chars_format::fixed, "-nan"},
+    {2.018f, chars_format::fixed, "2.018"},
+    {-2.018f, chars_format::fixed, "-2.018"},
+
+    // Ditto for general, which selects fixed for the scientific exponent 0.
+    {0.0f, chars_format::general, "0"},
+    {-0.0f, chars_format::general, "-0"},
+    {float_inf, chars_format::general, "inf"},
+    {-float_inf, chars_format::general, "-inf"},
+    {float_nan, chars_format::general, "nan"},
+    {-float_nan, chars_format::general, "-nan(ind)"},
+    {float_nan_payload, chars_format::general, "nan"},
+    {-float_nan_payload, chars_format::general, "-nan"},
+    {2.018f, chars_format::general, "2.018"},
+    {-2.018f, chars_format::general, "-2.018"},
+
+    // Ditto for plain, which selects fixed because it's shorter for these values.
+    {0.0f, chars_format{}, "0"},
+    {-0.0f, chars_format{}, "-0"},
+    {float_inf, chars_format{}, "inf"},
+    {-float_inf, chars_format{}, "-inf"},
+    {float_nan, chars_format{}, "nan"},
+    {-float_nan, chars_format{}, "-nan(ind)"},
+    {float_nan_payload, chars_format{}, "nan"},
+    {-float_nan_payload, chars_format{}, "-nan"},
+    {2.018f, chars_format{}, "2.018"},
+    {-2.018f, chars_format{}, "-2.018"},
+
+    // Ditto for hex.
+    {0.0f, chars_format::hex, "0p+0"},
+    {-0.0f, chars_format::hex, "-0p+0"},
+    {float_inf, chars_format::hex, "inf"},
+    {-float_inf, chars_format::hex, "-inf"},
+    {float_nan, chars_format::hex, "nan"},
+    {-float_nan, chars_format::hex, "-nan(ind)"},
+    {float_nan_payload, chars_format::hex, "nan"},
+    {-float_nan_payload, chars_format::hex, "-nan"},
+    {0x1.729p+0f, chars_format::hex, "1.729p+0"},
+    {-0x1.729p+0f, chars_format::hex, "-1.729p+0"},
+
+    // Ryu f2s_test.cc SwitchToSubnormal
+    {1.1754944e-38f, chars_format::scientific, "1.1754944e-38"},
+
+    // Ryu f2s_test.cc MinAndMax
+    {0x1.fffffep+127f, chars_format::scientific, "3.4028235e+38"},
+    {0x1.000000p-149f, chars_format::scientific, "1e-45"},
+
+    // Ryu f2s_test.cc BoundaryRoundEven
+    {3.355445e7f, chars_format::scientific, "3.355445e+07"},
+    {8.999999e9f, chars_format::scientific, "9e+09"},
+    {3.4366717e10f, chars_format::scientific, "3.436672e+10"},
+
+    // Ryu f2s_test.cc ExactValueRoundEven
+    {3.0540412e5f, chars_format::scientific, "3.0540412e+05"},
+    {8.0990312e3f, chars_format::scientific, "8.0990312e+03"},
+
+    // Ryu f2s_test.cc LotsOfTrailingZeros
+    {2.4414062e-4f, chars_format::scientific, "2.4414062e-04"},
+    {2.4414062e-3f, chars_format::scientific, "2.4414062e-03"},
+    {4.3945312e-3f, chars_format::scientific, "4.3945312e-03"},
+    {6.3476562e-3f, chars_format::scientific, "6.3476562e-03"},
+
+    // Ryu f2s_test.cc Regression
+    {4.7223665e21f, chars_format::scientific, "4.7223665e+21"},
+    {8388608.0f, chars_format::scientific, "8.388608e+06"},
+    {1.6777216e7f, chars_format::scientific, "1.6777216e+07"},
+    {3.3554436e7f, chars_format::scientific, "3.3554436e+07"},
+    {6.7131496e7f, chars_format::scientific, "6.7131496e+07"},
+    {1.9310392e-38f, chars_format::scientific, "1.9310392e-38"},
+    {-2.47e-43f, chars_format::scientific, "-2.47e-43"},
+    {1.993244e-38f, chars_format::scientific, "1.993244e-38"},
+    {4103.9003f, chars_format::scientific, "4.1039004e+03"},
+    {5.3399997e9f, chars_format::scientific, "5.3399997e+09"},
+    {6.0898e-39f, chars_format::scientific, "6.0898e-39"},
+    {0.0010310042f, chars_format::scientific, "1.0310042e-03"},
+    {2.8823261e17f, chars_format::scientific, "2.882326e+17"},
+    {0x1.5c87fap-84f, chars_format::scientific, "7.038531e-26"}, // TRANSITION, VSO-629490, should be 7.038531e-26f
+    {9.2234038e17f, chars_format::scientific, "9.223404e+17"},
+    {6.7108872e7f, chars_format::scientific, "6.710887e+07"},
+    {1.0e-44f, chars_format::scientific, "1e-44"},
+    {2.816025e14f, chars_format::scientific, "2.816025e+14"},
+    {9.223372e18f, chars_format::scientific, "9.223372e+18"},
+    {1.5846085e29f, chars_format::scientific, "1.5846086e+29"},
+    {1.1811161e19f, chars_format::scientific, "1.1811161e+19"},
+    {5.368709e18f, chars_format::scientific, "5.368709e+18"},
+    {4.6143165e18f, chars_format::scientific, "4.6143166e+18"},
+    {0.007812537f, chars_format::scientific, "7.812537e-03"},
+    {1.4e-45f, chars_format::scientific, "1e-45"},
+    {1.18697724e20f, chars_format::scientific, "1.18697725e+20"},
+    {1.00014165e-36f, chars_format::scientific, "1.00014165e-36"},
+    {200.0f, chars_format::scientific, "2e+02"},
+    {3.3554432e7f, chars_format::scientific, "3.3554432e+07"},
+
+    // Ryu f2s_test.cc LooksLikePow5
+    {0x1.2a05f2p+59f, chars_format::scientific, "6.7108864e+17"},
+    {0x1.2a05f2p+60f, chars_format::scientific, "1.3421773e+18"},
+    {0x1.2a05f2p+61f, chars_format::scientific, "2.6843546e+18"},
+
+    // Ryu f2s_test.cc OutputLength
+    {1.0f, chars_format::scientific, "1e+00"},
+    {1.2f, chars_format::scientific, "1.2e+00"},
+    {1.23f, chars_format::scientific, "1.23e+00"},
+    {1.234f, chars_format::scientific, "1.234e+00"},
+    {1.2345f, chars_format::scientific, "1.2345e+00"},
+    {1.23456f, chars_format::scientific, "1.23456e+00"},
+    {1.234567f, chars_format::scientific, "1.234567e+00"},
+    {1.2345678f, chars_format::scientific, "1.2345678e+00"},
+    {1.23456735e-36f, chars_format::scientific, "1.23456735e-36"},
+
+    // Test all exponents.
+    {1.729e-45f, chars_format::scientific, "1e-45"},
+    {1.729e-44f, chars_format::scientific, "1.7e-44"},
+    {1.729e-43f, chars_format::scientific, "1.72e-43"},
+    {1.729e-42f, chars_format::scientific, "1.729e-42"},
+    {1.729e-41f, chars_format::scientific, "1.729e-41"},
+    {1.729e-40f, chars_format::scientific, "1.729e-40"},
+    {1.729e-39f, chars_format::scientific, "1.729e-39"},
+    {1.729e-38f, chars_format::scientific, "1.729e-38"},
+    {1.729e-37f, chars_format::scientific, "1.729e-37"},
+    {1.729e-36f, chars_format::scientific, "1.729e-36"},
+    {1.729e-35f, chars_format::scientific, "1.729e-35"},
+    {1.729e-34f, chars_format::scientific, "1.729e-34"},
+    {1.729e-33f, chars_format::scientific, "1.729e-33"},
+    {1.729e-32f, chars_format::scientific, "1.729e-32"},
+    {1.729e-31f, chars_format::scientific, "1.729e-31"},
+    {1.729e-30f, chars_format::scientific, "1.729e-30"},
+    {1.729e-29f, chars_format::scientific, "1.729e-29"},
+    {1.729e-28f, chars_format::scientific, "1.729e-28"},
+    {1.729e-27f, chars_format::scientific, "1.729e-27"},
+    {1.729e-26f, chars_format::scientific, "1.729e-26"},
+    {1.729e-25f, chars_format::scientific, "1.729e-25"},
+    {1.729e-24f, chars_format::scientific, "1.729e-24"},
+    {1.729e-23f, chars_format::scientific, "1.729e-23"},
+    {1.729e-22f, chars_format::scientific, "1.729e-22"},
+    {1.729e-21f, chars_format::scientific, "1.729e-21"},
+    {1.729e-20f, chars_format::scientific, "1.729e-20"},
+    {1.729e-19f, chars_format::scientific, "1.729e-19"},
+    {1.729e-18f, chars_format::scientific, "1.729e-18"},
+    {1.729e-17f, chars_format::scientific, "1.729e-17"},
+    {1.729e-16f, chars_format::scientific, "1.729e-16"},
+    {1.729e-15f, chars_format::scientific, "1.729e-15"},
+    {1.729e-14f, chars_format::scientific, "1.729e-14"},
+    {1.729e-13f, chars_format::scientific, "1.729e-13"},
+    {1.729e-12f, chars_format::scientific, "1.729e-12"},
+    {1.729e-11f, chars_format::scientific, "1.729e-11"},
+    {1.729e-10f, chars_format::scientific, "1.729e-10"},
+    {1.729e-9f, chars_format::scientific, "1.729e-09"},
+    {1.729e-8f, chars_format::scientific, "1.729e-08"},
+    {1.729e-7f, chars_format::scientific, "1.729e-07"},
+    {1.729e-6f, chars_format::scientific, "1.729e-06"},
+    {1.729e-5f, chars_format::scientific, "1.729e-05"},
+    {1.729e-4f, chars_format::scientific, "1.729e-04"},
+    {1.729e-3f, chars_format::scientific, "1.729e-03"},
+    {1.729e-2f, chars_format::scientific, "1.729e-02"},
+    {1.729e-1f, chars_format::scientific, "1.729e-01"},
+    {1.729e0f, chars_format::scientific, "1.729e+00"},
+    {1.729e1f, chars_format::scientific, "1.729e+01"},
+    {1.729e2f, chars_format::scientific, "1.729e+02"},
+    {1.729e3f, chars_format::scientific, "1.729e+03"},
+    {1.729e4f, chars_format::scientific, "1.729e+04"},
+    {1.729e5f, chars_format::scientific, "1.729e+05"},
+    {1.729e6f, chars_format::scientific, "1.729e+06"},
+    {1.729e7f, chars_format::scientific, "1.729e+07"},
+    {1.729e8f, chars_format::scientific, "1.729e+08"},
+    {1.729e9f, chars_format::scientific, "1.729e+09"},
+    {1.729e10f, chars_format::scientific, "1.729e+10"},
+    {1.729e11f, chars_format::scientific, "1.729e+11"},
+    {1.729e12f, chars_format::scientific, "1.729e+12"},
+    {1.729e13f, chars_format::scientific, "1.729e+13"},
+    {1.729e14f, chars_format::scientific, "1.729e+14"},
+    {1.729e15f, chars_format::scientific, "1.729e+15"},
+    {1.729e16f, chars_format::scientific, "1.729e+16"},
+    {1.729e17f, chars_format::scientific, "1.729e+17"},
+    {1.729e18f, chars_format::scientific, "1.729e+18"},
+    {1.729e19f, chars_format::scientific, "1.729e+19"},
+    {1.729e20f, chars_format::scientific, "1.729e+20"},
+    {1.729e21f, chars_format::scientific, "1.729e+21"},
+    {1.729e22f, chars_format::scientific, "1.729e+22"},
+    {1.729e23f, chars_format::scientific, "1.729e+23"},
+    {1.729e24f, chars_format::scientific, "1.729e+24"},
+    {1.729e25f, chars_format::scientific, "1.729e+25"},
+    {1.729e26f, chars_format::scientific, "1.729e+26"},
+    {1.729e27f, chars_format::scientific, "1.729e+27"},
+    {1.729e28f, chars_format::scientific, "1.729e+28"},
+    {1.729e29f, chars_format::scientific, "1.729e+29"},
+    {1.729e30f, chars_format::scientific, "1.729e+30"},
+    {1.729e31f, chars_format::scientific, "1.729e+31"},
+    {1.729e32f, chars_format::scientific, "1.729e+32"},
+    {1.729e33f, chars_format::scientific, "1.729e+33"},
+    {1.729e34f, chars_format::scientific, "1.729e+34"},
+    {1.729e35f, chars_format::scientific, "1.729e+35"},
+    {1.729e36f, chars_format::scientific, "1.729e+36"},
+    {1.729e37f, chars_format::scientific, "1.729e+37"},
+    {1.729e38f, chars_format::scientific, "1.729e+38"},
+
+    // Test all of the cases for fixed notation, including the non-Ryu fallback for large integers.
+    {1.729e-4f, chars_format::fixed, "0.0001729"},
+    {1.729e-3f, chars_format::fixed, "0.001729"},
+    {1.729e-2f, chars_format::fixed, "0.01729"},
+    {1.729e-1f, chars_format::fixed, "0.1729"},
+    {1.729e0f, chars_format::fixed, "1.729"},
+    {1.729e1f, chars_format::fixed, "17.29"},
+    {1.729e2f, chars_format::fixed, "172.9"},
+    {1.729e3f, chars_format::fixed, "1729"},
+    {1.729e4f, chars_format::fixed, "17290"},
+    {1.729e5f, chars_format::fixed, "172900"},
+    {1.729e6f, chars_format::fixed, "1729000"},
+    {1.729e7f, chars_format::fixed, "17290000"},
+    {1.729e8f, chars_format::fixed, "172900000"},
+    {1.729e9f, chars_format::fixed, "1728999936"},
+    {1.729e10f, chars_format::fixed, "17290000384"},
+    {1.729e11f, chars_format::fixed, "172900007936"},
+    {1.729e12f, chars_format::fixed, "1728999981056"},
+    {1.729e13f, chars_format::fixed, "17290000072704"},
+    {1.729e14f, chars_format::fixed, "172899998629888"},
+    {1.729e15f, chars_format::fixed, "1729000019853312"},
+    {1.729e16f, chars_format::fixed, "17289999661662208"},
+    {1.729e17f, chars_format::fixed, "172900007354040320"},
+    {1.729e18f, chars_format::fixed, "1729000039180664832"},
+    {1.729e19f, chars_format::fixed, "17289999567172927488"},
+    {1.729e20f, chars_format::fixed, "172899997870752530432"},
+    {1.729e21f, chars_format::fixed, "1729000013891897393152"},
+    {1.729e22f, chars_format::fixed, "17290000138918973931520"},
+    {1.729e23f, chars_format::fixed, "172899999137389925629952"},
+    {1.729e24f, chars_format::fixed, "1729000063431493294227456"},
+    {1.729e25f, chars_format::fixed, "17289999481393428335427584"},
+    {1.729e26f, chars_format::fixed, "172900004037306320209051648"},
+    {1.729e27f, chars_format::fixed, "1729000040373063202090516480"},
+    {1.729e28f, chars_format::fixed, "17290000403730632020905164800"},
+    {1.729e29f, chars_format::fixed, "172900004037306320209051648000"},
+    {1.729e30f, chars_format::fixed, "1728999964815199476176193060864"},
+    {1.729e31f, chars_format::fixed, "17290000252614904569076517961728"},
+    {1.729e32f, chars_format::fixed, "172899990436890849544473432555520"},
+    {1.729e33f, chars_format::fixed, "1729000059111413406117268687945728"},
+    {1.729e34f, chars_format::fixed, "17290000281629124239827618154676224"},
+    {1.729e35f, chars_format::fixed, "172899995388651006685994532152016896"},
+    {1.729e36f, chars_format::fixed, "1728999993500591323992114118292144128"},
+    {1.729e37f, chars_format::fixed, "17289999935005913239921141182921441280"},
+    {1.729e38f, chars_format::fixed, "172899996814757931942752608835808002048"},
+
+    // Also test one-digit cases, where the decimal point can't appear between digits like "17.29".
+    {7e-3f, chars_format::fixed, "0.007"},
+    {7e-2f, chars_format::fixed, "0.07"},
+    {7e-1f, chars_format::fixed, "0.7"},
+    {7e0f, chars_format::fixed, "7"},
+    {7e1f, chars_format::fixed, "70"},
+    {7e2f, chars_format::fixed, "700"},
+    {7e3f, chars_format::fixed, "7000"},
+
+    // Test the maximum value in fixed notation.
+    {0x1.fffffep+127f, chars_format::fixed, "340282346638528859811704183484516925440"},
+
+    // Test highly-trimmed powers of 2.
+    {0x1p118f, chars_format::fixed, "332306998946228968225951765070086144"},
+    {0x1p118f, chars_format::scientific, "3.32307e+35"},
+    {0x1p119f, chars_format::fixed, "664613997892457936451903530140172288"},
+    {0x1p119f, chars_format::scientific, "6.64614e+35"},
+
+    // Test powers of 10 that are exactly representable.
+    {1e0f, chars_format::fixed, "1"},
+    {1e1f, chars_format::fixed, "10"},
+    {1e2f, chars_format::fixed, "100"},
+    {1e3f, chars_format::fixed, "1000"},
+    {1e4f, chars_format::fixed, "10000"},
+    {1e5f, chars_format::fixed, "100000"},
+    {1e6f, chars_format::fixed, "1000000"},
+    {1e7f, chars_format::fixed, "10000000"},
+    {1e8f, chars_format::fixed, "100000000"},
+    {1e9f, chars_format::fixed, "1000000000"},
+    {1e10f, chars_format::fixed, "10000000000"},
+
+    // Test powers of 10 that aren't exactly representable.
+    // This exercises the "adjustment" code.
+    {1e11f, chars_format::fixed, "99999997952"},
+    {1e12f, chars_format::fixed, "999999995904"},
+    {1e13f, chars_format::fixed, "9999999827968"},
+    {1e14f, chars_format::fixed, "100000000376832"},
+    {1e15f, chars_format::fixed, "999999986991104"},
+    {1e16f, chars_format::fixed, "10000000272564224"},
+    {1e17f, chars_format::fixed, "99999998430674944"},
+    {1e18f, chars_format::fixed, "999999984306749440"},
+    {1e19f, chars_format::fixed, "9999999980506447872"},
+    {1e20f, chars_format::fixed, "100000002004087734272"},
+    {1e21f, chars_format::fixed, "1000000020040877342720"},
+    {1e22f, chars_format::fixed, "9999999778196308361216"},
+    {1e23f, chars_format::fixed, "99999997781963083612160"},
+    {1e24f, chars_format::fixed, "1000000013848427855085568"},
+    {1e25f, chars_format::fixed, "9999999562023526247432192"},
+    {1e26f, chars_format::fixed, "100000002537764290115403776"},
+    {1e27f, chars_format::fixed, "999999988484154753734934528"},
+    {1e28f, chars_format::fixed, "9999999442119689768320106496"},
+    {1e29f, chars_format::fixed, "100000001504746621987668885504"},
+    {1e30f, chars_format::fixed, "1000000015047466219876688855040"},
+    {1e31f, chars_format::fixed, "9999999848243207295109594873856"},
+    {1e32f, chars_format::fixed, "100000003318135351409612647563264"},
+    {1e33f, chars_format::fixed, "999999994495727286427992885035008"},
+    {1e34f, chars_format::fixed, "9999999790214767953607394487959552"},
+    {1e35f, chars_format::fixed, "100000004091847875962975319375216640"},
+    {1e36f, chars_format::fixed, "999999961690316245365415600208216064"},
+    {1e37f, chars_format::fixed, "9999999933815812510711506376257961984"},
+    {1e38f, chars_format::fixed, "99999996802856924650656260769173209088"},
+
+    // These numbers have odd mantissas (unaffected by shifting)
+    // that are barely within the "max shifted mantissa" limit.
+    // They're exactly-representable multiples of powers of 10, and can use Ryu with zero-filling.
+    {3355443e1f, chars_format::fixed, "33554430"},
+    {671087e2f, chars_format::fixed, "67108700"},
+    {134217e3f, chars_format::fixed, "134217000"},
+    {26843e4f, chars_format::fixed, "268430000"},
+    {5367e5f, chars_format::fixed, "536700000"},
+    {1073e6f, chars_format::fixed, "1073000000"},
+    {213e7f, chars_format::fixed, "2130000000"},
+    {41e8f, chars_format::fixed, "4100000000"},
+    {7e9f, chars_format::fixed, "7000000000"},
+    {1e10f, chars_format::fixed, "10000000000"},
+
+    // These numbers have odd mantissas (unaffected by shifting)
+    // that are barely above the "max shifted mantissa" limit.
+    // This activates the non-Ryu fallback for large integers.
+    {3355445e1f, chars_format::fixed, "33554448"},
+    {671089e2f, chars_format::fixed, "67108896"},
+    {134219e3f, chars_format::fixed, "134219008"},
+    {26845e4f, chars_format::fixed, "268449984"},
+    {5369e5f, chars_format::fixed, "536899968"},
+    {1075e6f, chars_format::fixed, "1075000064"},
+    {215e7f, chars_format::fixed, "2150000128"},
+    {43e8f, chars_format::fixed, "4300000256"},
+    {9e9f, chars_format::fixed, "8999999488"},
+    {3e10f, chars_format::fixed, "30000001024"},
+
+    // Test the mantissa shifting logic.
+    {5495808e5f, chars_format::fixed, "549580800000"}, // 5367 * 2^10
+    {5497856e5f, chars_format::fixed, "549785567232"}, // 5369 * 2^10
+
+    // Inspect all of those numbers in scientific notation.
+    // For the within-limit numbers, this verifies that Ryu is actually being used with zero-filling above.
+    // For the above-limit numbers, this tests Ryu's trimming.
+    {3355443e1f, chars_format::scientific, "3.355443e+07"},
+    {671087e2f, chars_format::scientific, "6.71087e+07"},
+    {134217e3f, chars_format::scientific, "1.34217e+08"},
+    {26843e4f, chars_format::scientific, "2.6843e+08"},
+    {5367e5f, chars_format::scientific, "5.367e+08"},
+    {1073e6f, chars_format::scientific, "1.073e+09"},
+    {213e7f, chars_format::scientific, "2.13e+09"},
+    {41e8f, chars_format::scientific, "4.1e+09"},
+    {7e9f, chars_format::scientific, "7e+09"},
+    {1e10f, chars_format::scientific, "1e+10"},
+    {3355445e1f, chars_format::scientific, "3.355445e+07"},
+    {671089e2f, chars_format::scientific, "6.71089e+07"},
+    {134219e3f, chars_format::scientific, "1.34219e+08"},
+    {26845e4f, chars_format::scientific, "2.6845e+08"},
+    {5369e5f, chars_format::scientific, "5.369e+08"},
+    {1075e6f, chars_format::scientific, "1.075e+09"},
+    {215e7f, chars_format::scientific, "2.15e+09"},
+    {43e8f, chars_format::scientific, "4.3e+09"},
+    {9e9f, chars_format::scientific, "9e+09"},
+    {3e10f, chars_format::scientific, "3e+10"},
+    {5495808e5f, chars_format::scientific, "5.495808e+11"},
+    {5497856e5f, chars_format::scientific, "5.497856e+11"},
+
+    // Test the switching logic of chars_format::general.
+    // C11 7.21.6.1 "The fprintf function"/8:
+    // "Let P equal [...] 6 if the precision is omitted [...].
+    // Then, if a conversion with style E would have an exponent of X:
+    // - if P > X >= -4, the conversion is with style f [...].
+    // - otherwise, the conversion is with style e [...]."
+    {1e-6f, chars_format::general, "1e-06"},
+    {1e-5f, chars_format::general, "1e-05"},
+    {1e-4f, chars_format::general, "0.0001"},
+    {1e-3f, chars_format::general, "0.001"},
+    {1e-2f, chars_format::general, "0.01"},
+    {1e-1f, chars_format::general, "0.1"},
+    {1e0f, chars_format::general, "1"},
+    {1e1f, chars_format::general, "10"},
+    {1e2f, chars_format::general, "100"},
+    {1e3f, chars_format::general, "1000"},
+    {1e4f, chars_format::general, "10000"},
+    {1e5f, chars_format::general, "100000"},
+    {1e6f, chars_format::general, "1e+06"},
+    {1e7f, chars_format::general, "1e+07"},
+    {1.234e-6f, chars_format::general, "1.234e-06"},
+    {1.234e-5f, chars_format::general, "1.234e-05"},
+    {1.234e-4f, chars_format::general, "0.0001234"},
+    {1.234e-3f, chars_format::general, "0.001234"},
+    {1.234e-2f, chars_format::general, "0.01234"},
+    {1.234e-1f, chars_format::general, "0.1234"},
+    {1.234e0f, chars_format::general, "1.234"},
+    {1.234e1f, chars_format::general, "12.34"},
+    {1.234e2f, chars_format::general, "123.4"},
+    {1.234e3f, chars_format::general, "1234"},
+    {1.234e4f, chars_format::general, "12340"},
+    {1.234e5f, chars_format::general, "123400"},
+    {1.234e6f, chars_format::general, "1.234e+06"},
+    {1.234e7f, chars_format::general, "1.234e+07"},
+    {1.234e8f, chars_format::general, "1.234e+08"},
+    {1.234e9f, chars_format::general, "1.234e+09"},
+    {1.234e10f, chars_format::general, "1.234e+10"},
+
+    // Test the switching logic of the plain overload.
+    // N4762 19.19.2 [charconv.to.chars]/8:
+    // "The conversion specifier is f or e, chosen according to the requirement
+    // for a shortest representation (see above); a tie is resolved in favor of f."
+    {1e-6f, chars_format{}, "1e-06"},
+    {1e-5f, chars_format{}, "1e-05"},
+    {1e-4f, chars_format{}, "1e-04"},
+    {1e-3f, chars_format{}, "0.001"},
+    {1e-2f, chars_format{}, "0.01"},
+    {1e-1f, chars_format{}, "0.1"},
+    {1e0f, chars_format{}, "1"},
+    {1e1f, chars_format{}, "10"},
+    {1e2f, chars_format{}, "100"},
+    {1e3f, chars_format{}, "1000"},
+    {1e4f, chars_format{}, "10000"},
+    {1e5f, chars_format{}, "1e+05"},
+    {1e6f, chars_format{}, "1e+06"},
+    {1e7f, chars_format{}, "1e+07"},
+    {1.234e-6f, chars_format{}, "1.234e-06"},
+    {1.234e-5f, chars_format{}, "1.234e-05"},
+    {1.234e-4f, chars_format{}, "0.0001234"},
+    {1.234e-3f, chars_format{}, "0.001234"},
+    {1.234e-2f, chars_format{}, "0.01234"},
+    {1.234e-1f, chars_format{}, "0.1234"},
+    {1.234e0f, chars_format{}, "1.234"},
+    {1.234e1f, chars_format{}, "12.34"},
+    {1.234e2f, chars_format{}, "123.4"},
+    {1.234e3f, chars_format{}, "1234"},
+    {1.234e4f, chars_format{}, "12340"},
+    {1.234e5f, chars_format{}, "123400"},
+    {1.234e6f, chars_format{}, "1234000"},
+    {1.234e7f, chars_format{}, "12340000"},
+    {1.234e8f, chars_format{}, "123400000"},
+    {1.234e9f, chars_format{}, "1.234e+09"},
+    {1.234e10f, chars_format{}, "1.234e+10"},
+
+    // Test hexfloat corner cases.
+    {0x1.728p+0f, chars_format::hex, "1.728p+0"}, // instead of "2.e5p-1"
+    {0x0.000002p-126f, chars_format::hex, "0.000002p-126"}, // instead of "1p-149", min subnormal
+    {0x0.fffffep-126f, chars_format::hex, "0.fffffep-126"}, // max subnormal
+    {0x1p-126f, chars_format::hex, "1p-126"}, // min normal
+    {0x1.fffffep+127f, chars_format::hex, "1.fffffep+127"}, // max normal
+
+    // Test hexfloat exponents.
+    {0x1p-109f, chars_format::hex, "1p-109"},
+    {0x1p-99f, chars_format::hex, "1p-99"},
+    {0x1p-9f, chars_format::hex, "1p-9"},
+    {0x1p+0f, chars_format::hex, "1p+0"},
+    {0x1p+9f, chars_format::hex, "1p+9"},
+    {0x1p+99f, chars_format::hex, "1p+99"},
+    {0x1p+109f, chars_format::hex, "1p+109"},
+
+    // Test hexfloat hexits.
+    {0x1.0123p+0f, chars_format::hex, "1.0123p+0"},
+    {0x1.4567p+0f, chars_format::hex, "1.4567p+0"},
+    {0x1.89abp+0f, chars_format::hex, "1.89abp+0"},
+    {0x1.cdefp+0f, chars_format::hex, "1.cdefp+0"},
+
+    // Test hexfloat trimming.
+    {0x1.00000ap+0f, chars_format::hex, "1.00000ap+0"},
+    {0x1.0000ap+0f, chars_format::hex, "1.0000ap+0"},
+    {0x1.000ap+0f, chars_format::hex, "1.000ap+0"},
+    {0x1.00ap+0f, chars_format::hex, "1.00ap+0"},
+    {0x1.0ap+0f, chars_format::hex, "1.0ap+0"},
+    {0x1.ap+0f, chars_format::hex, "1.ap+0"},
+    {0x1p+0f, chars_format::hex, "1p+0"},
+
+    // https://www.exploringbinary.com/the-shortest-decimal-string-that-round-trips-may-not-be-the-nearest/
+    // This is an exhaustive list of anomalous values.
+    // (See double_to_chars_test_cases.hpp for more details.)
+    {0x1p90f, chars_format::scientific, "1.2379401e+27"},
+    {0x1p87f, chars_format::scientific, "1.5474251e+26"},
+    {0x1p-96f, chars_format::scientific, "1.2621775e-29"},
+};
+
+#endif // FLOAT_TO_CHARS_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/floating_point_test_cases.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/floating_point_test_cases.hpp
new file mode 100644
index 0000000..55c61db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/floating_point_test_cases.hpp
@@ -0,0 +1,278 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef FLOATING_POINT_TEST_CASES_HPP
+#define FLOATING_POINT_TEST_CASES_HPP
+
+#include <stdint.h>
+#include <utility>
+
+constexpr std::pair<const char*, uint64_t> floating_point_test_cases_double[] = {
+    // Verify small exactly-representable integers:
+    {"1", 0x3FF0000000000000ULL},
+    {"2", 0x4000000000000000ULL},
+    {"3", 0x4008000000000000ULL},
+    {"4", 0x4010000000000000ULL},
+    {"5", 0x4014000000000000ULL},
+    {"6", 0x4018000000000000ULL},
+    {"7", 0x401C000000000000ULL},
+    {"8", 0x4020000000000000ULL},
+
+    // Verify large exactly-representable integers:
+    {"9007199254740984", 0x433FFFFFFFFFFFF8ULL},
+    {"9007199254740985", 0x433FFFFFFFFFFFF9ULL},
+    {"9007199254740986", 0x433FFFFFFFFFFFFAULL},
+    {"9007199254740987", 0x433FFFFFFFFFFFFBULL},
+    {"9007199254740988", 0x433FFFFFFFFFFFFCULL},
+    {"9007199254740989", 0x433FFFFFFFFFFFFDULL},
+    {"9007199254740990", 0x433FFFFFFFFFFFFEULL},
+    {"9007199254740991", 0x433FFFFFFFFFFFFFULL}, // 2^53 - 1
+
+    // Verify the smallest denormal values:
+    {"5.0e-324", 0x0000000000000001ULL},
+    {"1.0e-323", 0x0000000000000002ULL},
+    {"1.5e-323", 0x0000000000000003ULL},
+    {"2.0e-323", 0x0000000000000004ULL},
+    {"2.5e-323", 0x0000000000000005ULL},
+    {"3.0e-323", 0x0000000000000006ULL},
+    {"3.5e-323", 0x0000000000000007ULL},
+    {"4.0e-323", 0x0000000000000008ULL},
+    {"4.5e-323", 0x0000000000000009ULL},
+    {"5.0e-323", 0x000000000000000AULL},
+    {"5.5e-323", 0x000000000000000BULL},
+    {"6.0e-323", 0x000000000000000CULL},
+    {"6.5e-323", 0x000000000000000DULL},
+    {"7.0e-323", 0x000000000000000EULL},
+    {"7.5e-323", 0x000000000000000FULL},
+
+    // Verify the largest denormal values:
+    {"2.2250738585071935e-308", 0x000FFFFFFFFFFFF0ULL},
+    {"2.2250738585071940e-308", 0x000FFFFFFFFFFFF1ULL},
+    {"2.2250738585071945e-308", 0x000FFFFFFFFFFFF2ULL},
+    {"2.2250738585071950e-308", 0x000FFFFFFFFFFFF3ULL},
+    {"2.2250738585071955e-308", 0x000FFFFFFFFFFFF4ULL},
+    {"2.2250738585071960e-308", 0x000FFFFFFFFFFFF5ULL},
+    {"2.2250738585071964e-308", 0x000FFFFFFFFFFFF6ULL},
+    {"2.2250738585071970e-308", 0x000FFFFFFFFFFFF7ULL},
+    {"2.2250738585071974e-308", 0x000FFFFFFFFFFFF8ULL},
+    {"2.2250738585071980e-308", 0x000FFFFFFFFFFFF9ULL},
+    {"2.2250738585071984e-308", 0x000FFFFFFFFFFFFAULL},
+    {"2.2250738585071990e-308", 0x000FFFFFFFFFFFFBULL},
+    {"2.2250738585071994e-308", 0x000FFFFFFFFFFFFCULL},
+    {"2.2250738585072000e-308", 0x000FFFFFFFFFFFFDULL},
+    {"2.2250738585072004e-308", 0x000FFFFFFFFFFFFEULL},
+    {"2.2250738585072010e-308", 0x000FFFFFFFFFFFFFULL},
+
+    // DevDiv#576315 "I/O library incorrect rounds floating point numbers on input"
+    // DevDiv#616647 "Visual C++ 11: iostream bug: incorrect input streaming of the smallest normal double and some
+    // denormals"
+    // DevDiv#730414 "iostreams is still misparsing floating-point"
+    // DevDiv#938627 "parsing float values using std::istream gives results inconsistent with sscanf() and with C++
+    // compiler"
+    // DevDiv#961116 "floating point string conversion accuracy"
+    {"2.2250738585072014e-308", 0x0010000000000000ULL}, // DBL_MIN
+    {"1.7976931348623158e+308", 0x7FEFFFFFFFFFFFFFULL}, // DBL_MAX
+    {"4.26144921954407e-309", 0x00031076B2F00000ULL},
+    {"179.9999999999999855", 0x40667FFFFFFFFFFFULL},
+    {"4.1", 0x4010666666666666ULL},
+    {"0.2288884", 0x3FCD4C37103785A8ULL},
+    {"0.168", 0x3FC5810624DD2F1BULL},
+    {"1.68", 0x3FFAE147AE147AE1ULL},
+    {"16.80000001", 0x4030CCCCCCF7BFEBULL},
+
+    // Test cases from Rick Regan's article, "Incorrectly Rounded Conversions in Visual C++":
+    // https://www.exploringbinary.com/incorrectly-rounded-conversions-in-visual-c-plus-plus/
+
+    // Example 1:
+    {"9214843084008499", 0x43405E6CEC57761AULL},
+
+    // Example 2 (2^-1 + 2^-53 + 2^-54):
+    {"0.500000000000000166533453693773481063544750213623046875", 0x3FE0000000000002ULL},
+
+    // Example 3:
+    {"30078505129381147446200", 0x44997A3C7271B021ULL},
+
+    // Example 4:
+    {"1777820000000000000001", 0x4458180D5BAD2E3EULL},
+
+    // Example 5 (2^-1 + 2^-53 + 2^-54 + 2^-66):
+    {"0.500000000000000166547006220929549868969843373633921146392822265625", 0x3FE0000000000002ULL},
+
+    // Example 6 (2^-1 + 2^-53 + 2^-54 + 2^-65):
+    {"0.50000000000000016656055874808561867439493653364479541778564453125", 0x3FE0000000000002ULL},
+
+    // Example 7:
+    {"0.3932922657273", 0x3FD92BB352C4623AULL},
+
+    // The following test cases are taken from other articles on Rick Regan's
+    // Exploring Binary blog. These are conversions that other implementations
+    // were found to perform incorrectly.
+
+    // https://www.exploringbinary.com/incorrectly-rounded-subnormal-conversions-in-java/
+    // Example 1 (2^-1047 + 2^-1075, half-ulp above a power of two):
+    {"6.6312368714697582767853966302759672433990999473553031442499717587"
+     "362866301392654396180682007880487441059604205526018528897150063763"
+     "256665955396033303618005191075917832333584923372080578494993608994"
+     "251286407188566165030934449228547591599881603044399098682919739314"
+     "266256986631577498362522745234853124423586512070512924530832781161"
+     "439325697279187097860044978723221938561502254152119972830784963194"
+     "121246401117772161481107528151017752957198119743384519360959074196"
+     "224175384736794951486324803914359317679811223967034438033355297560"
+     "033532098300718322306892013830155987921841729099279241763393155074"
+     "022348361207309147831684007154624400538175927027662135590421159867"
+     "638194826541287705957668068727833491469671712939495988506756821156"
+     "96218943412532098591327667236328125E-316",
+        0x0000000008000000ULL},
+
+    // Example 2 (2^-1058 - 2^-1075, half-ulp below a power of two):
+    {"3.2378839133029012895883524125015321748630376694231080599012970495"
+     "523019706706765657868357425877995578606157765598382834355143910841"
+     "531692526891905643964595773946180389283653051434639551003566966656"
+     "292020173313440317300443693602052583458034314716600326995807313009"
+     "548483639755486900107515300188817581841745696521731104736960227499"
+     "346384253806233697747365600089974040609674980283891918789639685754"
+     "392222064169814626901133425240027243859416510512935526014211553334"
+     "302252372915238433223313261384314778235911424088000307751706259156"
+     "707286570031519536642607698224949379518458015308952384398197084033"
+     "899378732414634842056080000272705311068273879077914449185347715987"
+     "501628125488627684932015189916680282517302999531439241685457086639"
+     "13273994694463908672332763671875E-319",
+        0x0000000000010000ULL},
+
+    // Example 3 (2^-1027 + 2^-1066 + 2^-1075, half-ulp above a non-power of two):
+    {"6.9533558078476771059728052155218916902221198171459507544162056079"
+     "800301315496366888061157263994418800653863998640286912755395394146"
+     "528315847956685600829998895513577849614468960421131982842131079351"
+     "102171626549398024160346762138294097205837595404767869364138165416"
+     "212878432484332023692099166122496760055730227032447997146221165421"
+     "888377703760223711720795591258533828013962195524188394697705149041"
+     "926576270603193728475623010741404426602378441141744972109554498963"
+     "891803958271916028866544881824524095839813894427833770015054620157"
+     "450178487545746683421617594966617660200287528887833870748507731929"
+     "971029979366198762266880963149896457660004790090837317365857503352"
+     "620998601508967187744019647968271662832256419920407478943826987518"
+     "09812609536720628966577351093292236328125E-310",
+        0x0000800000000100ULL},
+
+    // Example 4 (2^-1058 + 2^-1063 - 2^-1075, half-ulp below a non-power of two):
+    {"3.3390685575711885818357137012809439119234019169985217716556569973"
+     "284403145596153181688491490746626090999981130094655664268081703784"
+     "340657229916596426194677060348844249897410807907667784563321682004"
+     "646515939958173717821250106683466529959122339932545844611258684816"
+     "333436749050742710644097630907080178565840197768788124253120088123"
+     "262603630354748115322368533599053346255754042160606228586332807443"
+     "018924703005556787346899784768703698535494132771566221702458461669"
+     "916553215355296238706468887866375289955928004361779017462862722733"
+     "744717014529914330472578638646014242520247915673681950560773208853"
+     "293843223323915646452641434007986196650406080775491621739636492640"
+     "497383622906068758834568265867109610417379088720358034812416003767"
+     "05491726170293986797332763671875E-319",
+        0x0000000000010800ULL},
+
+    // A number between 2^-1074 and 2^-1075, just slightly larger than 2^-1075.
+    // It has bit 1075 set (the denormal rounding bit), followed by 2506 zeroes,
+    // followed by one bits. It should round up to 2^-1074.
+    {"2.470328229206232720882843964341106861825299013071623822127928412503"
+     "37753635104375932649918180817996189898282347722858865463328355177969"
+     "89819938739800539093906315035659515570226392290858392449105184435931"
+     "80284993653615250031937045767824921936562366986365848075700158576926"
+     "99037063119282795585513329278343384093519780155312465972635795746227"
+     "66465272827220056374006485499977096599470454020828166226237857393450"
+     "73633900796776193057750674017632467360096895134053553745851666113422"
+     "37666786041621596804619144672918403005300575308490487653917113865916"
+     "46239524912623653881879636239373280423891018672348497668235089863388"
+     "58792562830275599565752445550725518931369083625477918694866799496832"
+     "40497058210285131854513962138377228261454376934125320985913276672363"
+     "28125001e-324",
+        0x0000000000000001ULL},
+
+    // This value has a non-terminating binary fraction. It has a 0 at bit 54 followed by 120 ones.
+    {"1.8254370818746402660437411213933955878019332885742187", 0x3FFD34FD8378EA83ULL},
+
+    // https://www.exploringbinary.com/incorrect-decimal-to-floating-point-conversion-in-sqlite/
+    {"1e-23", 0x3B282DB34012B251ULL},
+    {"8.533e+68", 0x4E3FA69165A8EEA2ULL},
+    {"4.1006e-184", 0x19DBE0D1C7EA60C9ULL},
+    {"9.998e+307", 0x7FE1CC0A350CA87BULL},
+    {"9.9538452227e-280", 0x0602117AE45CDE43ULL},
+    {"6.47660115e-260", 0x0A1FDD9E333BADADULL},
+    {"7.4e+47", 0x49E033D7ECA0ADEFULL},
+    {"5.92e+48", 0x4A1033D7ECA0ADEFULL},
+    {"7.35e+66", 0x4DD172B70EABABA9ULL},
+    {"8.32116e+55", 0x4B8B2628393E02CDULL},
+};
+
+constexpr std::pair<const char*, uint32_t> floating_point_test_cases_float[] = {
+    // Verify small exactly-representable integers:
+    {"1", 0x3F800000U},
+    {"2", 0x40000000U},
+    {"3", 0x40400000U},
+    {"4", 0x40800000U},
+    {"5", 0x40A00000U},
+    {"6", 0x40C00000U},
+    {"7", 0x40E00000U},
+    {"8", 0x41000000U},
+
+    // Verify large exactly-representable integers:
+    {"16777208", 0x4B7FFFF8U},
+    {"16777209", 0x4B7FFFF9U},
+    {"16777210", 0x4B7FFFFAU},
+    {"16777211", 0x4B7FFFFBU},
+    {"16777212", 0x4B7FFFFCU},
+    {"16777213", 0x4B7FFFFDU},
+    {"16777214", 0x4B7FFFFEU},
+    {"16777215", 0x4B7FFFFFU}, // 2^24 - 1
+
+    // Verify the smallest denormal values:
+    {"1.4012984643248170e-45", 0x00000001U},
+    {"2.8025969286496340e-45", 0x00000002U},
+    {"4.2038953929744510e-45", 0x00000003U},
+    {"5.6051938572992680e-45", 0x00000004U},
+    {"7.0064923216240850e-45", 0x00000005U},
+    {"8.4077907859489020e-45", 0x00000006U},
+    {"9.8090892502737200e-45", 0x00000007U},
+    {"1.1210387714598537e-44", 0x00000008U},
+    {"1.2611686178923354e-44", 0x00000009U},
+    {"1.4012984643248170e-44", 0x0000000AU},
+    {"1.5414283107572988e-44", 0x0000000BU},
+    {"1.6815581571897805e-44", 0x0000000CU},
+    {"1.8216880036222622e-44", 0x0000000DU},
+    {"1.9618178500547440e-44", 0x0000000EU},
+    {"2.1019476964872256e-44", 0x0000000FU},
+
+    // Verify the largest denormal values:
+    {"1.1754921087447446e-38", 0x007FFFF0U},
+    {"1.1754922488745910e-38", 0x007FFFF1U},
+    {"1.1754923890044375e-38", 0x007FFFF2U},
+    {"1.1754925291342839e-38", 0x007FFFF3U},
+    {"1.1754926692641303e-38", 0x007FFFF4U},
+    {"1.1754928093939768e-38", 0x007FFFF5U},
+    {"1.1754929495238232e-38", 0x007FFFF6U},
+    {"1.1754930896536696e-38", 0x007FFFF7U},
+    {"1.1754932297835160e-38", 0x007FFFF8U},
+    {"1.1754933699133625e-38", 0x007FFFF9U},
+    {"1.1754935100432089e-38", 0x007FFFFAU},
+    {"1.1754936501730553e-38", 0x007FFFFBU},
+    {"1.1754937903029018e-38", 0x007FFFFCU},
+    {"1.1754939304327482e-38", 0x007FFFFDU},
+    {"1.1754940705625946e-38", 0x007FFFFEU},
+    {"1.1754942106924411e-38", 0x007FFFFFU},
+
+    // DevDiv#576315 "I/O library incorrect rounds floating point numbers on input"
+    // DevDiv#616647 "Visual C++ 11: iostream bug: incorrect input streaming of the smallest normal double and some
+    // denormals"
+    // DevDiv#730414 "iostreams is still misparsing floating-point"
+    // DevDiv#938627 "parsing float values using std::istream gives results inconsistent with sscanf() and with C++
+    // compiler"
+    // DevDiv#961116 "floating point string conversion accuracy"
+    {"1.175494351e-38", 0x00800000U}, // FLT_MIN
+    {"3.402823466e+38", 0x7F7FFFFFU}, // FLT_MAX
+    {"179.9999999999999855", 0x43340000U},
+    {"4.1", 0x40833333U},
+    {"0.2288884", 0x3E6A61B9U},
+    {"0.168", 0x3E2C0831U},
+    {"1.68", 0x3FD70A3DU},
+    {"16.80000001", 0x41866666U},
+};
+
+#endif // FLOATING_POINT_TEST_CASES_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.cpp
new file mode 100644
index 0000000..69e11a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.cpp
@@ -0,0 +1,1083 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#include "test.hpp"
+
+#include <algorithm>
+#include <array>
+#include <assert.h>
+#include <charconv>
+#include <chrono>
+#include <cmath>
+#include <functional>
+#include <iterator>
+#include <limits>
+#include <locale>
+#include <optional>
+#include <random>
+#include <set>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <string>
+#include <string_view>
+#include <system_error>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "double_fixed_precision_to_chars_test_cases_1.hpp"
+#include "double_fixed_precision_to_chars_test_cases_2.hpp"
+#include "double_fixed_precision_to_chars_test_cases_3.hpp"
+#include "double_fixed_precision_to_chars_test_cases_4.hpp"
+#include "double_from_chars_test_cases.hpp"
+#include "double_general_precision_to_chars_test_cases.hpp"
+#include "double_hex_precision_to_chars_test_cases.hpp"
+#include "double_scientific_precision_to_chars_test_cases_1.hpp"
+#include "double_scientific_precision_to_chars_test_cases_2.hpp"
+#include "double_scientific_precision_to_chars_test_cases_3.hpp"
+#include "double_scientific_precision_to_chars_test_cases_4.hpp"
+#include "double_to_chars_test_cases.hpp"
+#include "float_fixed_precision_to_chars_test_cases.hpp"
+#include "float_from_chars_test_cases.hpp"
+#include "float_general_precision_to_chars_test_cases.hpp"
+#include "float_hex_precision_to_chars_test_cases.hpp"
+#include "float_scientific_precision_to_chars_test_cases.hpp"
+#include "float_to_chars_test_cases.hpp"
+
+using namespace std;
+
+void initialize_randomness(mt19937_64& mt64, const int argc, char** const /*argv*/) {
+    constexpr size_t n = mt19937_64::state_size;
+    constexpr size_t w = mt19937_64::word_size;
+    static_assert(w % 32 == 0);
+    constexpr size_t k = w / 32;
+
+    vector<uint32_t> vec(n * k);
+
+    puts("USAGE:");
+    puts("test.exe              : generates seed data from random_device.");
+
+    if (argc == 1) {
+        random_device rd;
+        generate(vec.begin(), vec.end(), ref(rd));
+        puts("Generated seed data.");
+    } else {
+        puts("ERROR: Too many command-line arguments.");
+        abort();
+    }
+
+    puts("SEED DATA:");
+    for (const auto& elem : vec) {
+        printf("%zu ", static_cast<size_t>(elem));
+    }
+    printf("\n");
+
+    seed_seq seq(vec.cbegin(), vec.cend());
+
+    mt64.seed(seq);
+
+    puts("Successfully seeded mt64. First three values:");
+    for (int i = 0; i < 3; ++i) {
+        // libc++ uses long for 64-bit values.
+        printf("0x%016llX\n", static_cast<unsigned long long>(mt64()));
+    }
+}
+
+static_assert((chars_format::scientific & chars_format::fixed) == chars_format{});
+static_assert((chars_format::scientific & chars_format::hex) == chars_format{});
+static_assert((chars_format::fixed & chars_format::hex) == chars_format{});
+static_assert(chars_format::general == (chars_format::fixed | chars_format::scientific));
+
+template <typename T, typename Optional>
+void test_common_to_chars(
+    const T value, const Optional opt_arg, const optional<int> opt_precision, const string_view correct) {
+
+    // Important: Test every effective buffer size from 0 through correct.size() and slightly beyond. For the sizes
+    // less than correct.size(), this verifies that the too-small buffer is correctly detected, and that we don't
+    // attempt to write outside of it, even by a single char. (This exhaustive validation is necessary because the
+    // implementation must check whenever it attempts to write. Sometimes we can calculate the total size and perform
+    // a single check, but sometimes we need to check when writing each part of the result.) Testing correct.size()
+    // verifies that we can succeed without overrunning, and testing slightly larger sizes verifies that we can succeed
+    // without attempting to write to extra chars even when they're available. Finally, we also verify that we aren't
+    // underrunning the buffer. This is a concern because sometimes we walk backwards when rounding.
+
+    constexpr size_t BufferPrefix = 20; // detect buffer underruns (specific value isn't important)
+
+    constexpr size_t Space = is_integral_v<T> ? 1 + 64 // worst case: -2^63 in binary
+                           : is_same_v<T, float>
+                               ? 1 + 151 // worst case: negative min subnormal float, fixed notation
+                               : 1 + 1076; // worst case: negative min subnormal double, fixed notation
+
+    constexpr size_t BufferSuffix = 30; // detect buffer overruns (specific value isn't important)
+
+    array<char, BufferPrefix + Space + BufferSuffix> buff;
+
+    char* const buff_begin = buff.data();
+    char* const first      = buff_begin + BufferPrefix;
+    char* const buff_end   = buff_begin + buff.size();
+
+    constexpr size_t ExtraChars = 3;
+    static_assert(ExtraChars + 10 < BufferSuffix,
+        "The specific values aren't important, but there should be plenty of room to detect buffer overruns.");
+
+    for (size_t n = 0; n <= correct.size() + ExtraChars; ++n) {
+        assert(n <= static_cast<size_t>(buff_end - first));
+        char* const last = first + n;
+
+        buff.fill('@');
+        const auto is_fill_char = [](const char c) { return c == '@'; };
+
+        to_chars_result result{};
+        if (opt_precision.has_value()) {
+            assert(opt_arg.has_value());
+
+            if constexpr (is_floating_point_v<T>) {
+                result = to_chars(first, last, value, opt_arg.value(), opt_precision.value());
+            } else {
+                abort();
+            }
+        } else if (opt_arg.has_value()) {
+            result = to_chars(first, last, value, opt_arg.value());
+        } else {
+            result = to_chars(first, last, value);
+        }
+
+        if (n < correct.size()) {
+            assert(result.ptr == last);
+            assert(result.ec == errc::value_too_large);
+            assert(all_of(buff_begin, first, is_fill_char));
+            // [first, last) is unspecified
+            assert(all_of(last, buff_end, is_fill_char));
+        } else {
+            assert(result.ptr == first + correct.size());
+            assert(result.ec == errc{});
+            assert(all_of(buff_begin, first, is_fill_char));
+            assert(equal(first, result.ptr, correct.begin(), correct.end()));
+            assert(all_of(result.ptr, buff_end, is_fill_char));
+        }
+    }
+}
+
+template <typename T>
+void test_integer_to_chars(const T value, const optional<int> opt_base, const string_view correct) {
+
+    test_common_to_chars(value, opt_base, nullopt, correct);
+
+    { // Also test successful from_chars() scenarios.
+        const char* const correct_first = correct.data();
+        const char* const correct_last  = correct_first + correct.size();
+
+        T dest = 0;
+
+        const from_chars_result from_res =
+            (opt_base.has_value() ? from_chars(correct_first, correct_last, dest, opt_base.value())
+                                  : from_chars(correct_first, correct_last, dest));
+
+        assert(from_res.ptr == correct_last);
+        assert(from_res.ec == errc{});
+        assert(dest == value);
+    }
+}
+
+// https://www.wolframalpha.com : Table[BaseForm[n * 2 - 1, n], {n, 2, 36}]
+constexpr const char* output_max_digit[] = {"skip0", "skip1", "11", "12", "13", "14", "15", "16", "17", "18", "19",
+    "1a", "1b", "1c", "1d", "1e", "1f", "1g", "1h", "1i", "1j", "1k", "1l", "1m", "1n", "1o", "1p", "1q", "1r", "1s",
+    "1t", "1u", "1v", "1w", "1x", "1y", "1z"};
+
+// https://www.wolframalpha.com : Table[BaseForm[k, n], {k, {MEOW, MEOW, MEOW}}, {n, 2, 36}]
+constexpr uint64_t stress_chunks_positive                          = 12000000345000678900ULL;
+constexpr pair<uint64_t, array<const char*, 37>> output_positive[] = {
+    {123U, {{"skip0", "skip1", "1111011", "11120", "1323", "443", "323", "234", "173", "146", "123", "102", "a3", "96",
+               "8b", "83", "7b", "74", "6f", "69", "63", "5i", "5d", "58", "53", "4n", "4j", "4f", "4b", "47", "43",
+               "3u", "3r", "3o", "3l", "3i", "3f"}}},
+    {uint64_t{INT8_MAX}, {{"skip0", "skip1", "1111111", "11201", "1333", "1002", "331", "241", "177", "151", "127",
+                             "106", "a7", "9a", "91", "87", "7f", "78", "71", "6d", "67", "61", "5h", "5c", "57", "52",
+                             "4n", "4j", "4f", "4b", "47", "43", "3v", "3s", "3p", "3m", "3j"}}},
+    {161U, {{"skip0", "skip1", "10100001", "12222", "2201", "1121", "425", "320", "241", "188", "161", "137", "115",
+               "c5", "b7", "ab", "a1", "98", "8h", "89", "81", "7e", "77", "70", "6h", "6b", "65", "5q", "5l", "5g",
+               "5b", "56", "51", "4t", "4p", "4l", "4h"}}},
+    {UINT8_MAX, {{"skip0", "skip1", "11111111", "100110", "3333", "2010", "1103", "513", "377", "313", "255", "212",
+                    "193", "168", "143", "120", "ff", "f0", "e3", "d8", "cf", "c3", "bd", "b2", "af", "a5", "9l", "9c",
+                    "93", "8n", "8f", "87", "7v", "7o", "7h", "7a", "73"}}},
+    {1729U, {{"skip0", "skip1", "11011000001", "2101001", "123001", "23404", "12001", "5020", "3301", "2331", "1729",
+                "1332", "1001", "a30", "8b7", "7a4", "6c1", "5gc", "561", "4f0", "469", "3j7", "3cd", "364", "301",
+                "2j4", "2ed", "2a1", "25l", "21i", "1rj", "1oo", "1m1", "1jd", "1gt", "1ee", "1c1"}}},
+    {uint64_t{INT16_MAX}, {{"skip0", "skip1", "111111111111111", "1122221121", "13333333", "2022032", "411411",
+                              "164350", "77777", "48847", "32767", "22689", "16b67", "11bb7", "bd27", "9a97", "7fff",
+                              "6b68", "5b27", "4eeb", "41i7", "3b67", "31f9", "2flf", "28l7", "22ah", "1mc7", "1hpg",
+                              "1dm7", "19rq", "16c7", "1330", "vvv", "u2v", "sbp", "qq7", "pa7"}}},
+    {57494U, {{"skip0", "skip1", "1110000010010110", "2220212102", "32002112", "3314434", "1122102", "326423", "160226",
+                 "86772", "57494", "3a218", "29332", "20228", "16d4a", "1207e", "e096", "bbg0", "9f82", "8750", "73ee",
+                 "647h", "58h8", "4gfh", "43je", "3goj", "3718", "2onb", "2h9a", "2aag", "23qe", "1spk", "1o4m", "1jq8",
+                 "1fp0", "1bwo", "18d2"}}},
+    {UINT16_MAX, {{"skip0", "skip1", "1111111111111111", "10022220020", "33333333", "4044120", "1223223", "362031",
+                     "177777", "108806", "65535", "45268", "31b13", "23aa2", "19c51", "14640", "ffff", "d5d0", "b44f",
+                     "9aa4", "83gf", "71cf", "638j", "58k8", "4hif", "44la", "3iof", "38o6", "2rgf", "2jqo", "2cof",
+                     "2661", "1vvv", "1r5u", "1mnh", "1ihf", "1ekf"}}},
+    {71125478U, {{"skip0", "skip1", "100001111010100100111100110", "11221211112210222", "10033110213212",
+                    "121202003403", "11020244342", "1522361624", "417244746", "157745728", "71125478", "3716a696",
+                    "1b9a06b2", "11973ba8", "9636514", "639e338", "43d49e6", "2g19gfb", "21b9d18", "19dec94", "124addi",
+                    "h8f25b", "dhdfa6", "b13hg2", "8m91he", "7720j3", "5pgj58", "4pmelq", "43k17i", "3dg8ek", "2ro898",
+                    "2f0et8", "23qif6", "1qw5lh", "1j7l7s", "1cdvli", "16cgrq"}}},
+    {uint64_t{INT32_MAX},
+        {{"skip0", "skip1", "1111111111111111111111111111111", "12112122212110202101", "1333333333333333",
+            "13344223434042", "553032005531", "104134211161", "17777777777", "5478773671", "2147483647", "a02220281",
+            "4bb2308a7", "282ba4aaa", "1652ca931", "c87e66b7", "7fffffff", "53g7f548", "3928g3h1", "27c57h32",
+            "1db1f927", "140h2d91", "ikf5bf1", "ebelf95", "b5gge57", "8jmdnkm", "6oj8ion", "5ehncka", "4clm98f",
+            "3hk7987", "2sb6cs7", "2d09uc1", "1vvvvvv", "1lsqtl1", "1d8xqrp", "15v22um", "zik0zj"}}},
+    {3522553278ULL,
+        {{"skip0", "skip1", "11010001111101011110010110111110", "100002111022020200020", "3101331132112332",
+            "24203233201103", "1341312313010", "153202131426", "32175362676", "10074266606", "3522553278", "1548431462",
+            "823842766", "441a34c6a", "255b8d486", "1593b4753", "d1f5e5be", "89ffb3b6", "5da3e606", "3hgbfb5i",
+            "2f0fj33i", "1k1ac536", "191b46e2", "10i6fmk8", "ia967l6", "eahia63", "baca9ga", "92d86i6", "78iq4i6",
+            "5qlc1dc", "4osos2i", "3u1862s", "38vbpdu", "2o0a7ro", "29hx9e6", "1w2dnod", "1m98ji6"}}},
+    {UINT32_MAX,
+        {{"skip0", "skip1", "11111111111111111111111111111111", "102002022201221111210", "3333333333333333",
+            "32244002423140", "1550104015503", "211301422353", "37777777777", "12068657453", "4294967295", "1904440553",
+            "9ba461593", "535a79888", "2ca5b7463", "1a20dcd80", "ffffffff", "a7ffda90", "704he7g3", "4f5aff65",
+            "3723ai4f", "281d55i3", "1fj8b183", "1606k7ib", "mb994af", "hek2mgk", "dnchbnl", "b28jpdl", "8pfgih3",
+            "76beigf", "5qmcpqf", "4q0jto3", "3vvvvvv", "3aokq93", "2qhxjlh", "2br45qa", "1z141z3"}}},
+    {545890816626160ULL,
+        {{"skip0", "skip1", "1111100000111110000011100001101100000110111110000", "2122120211122121121021010202111",
+            "1330013300130031200313300", "1033022333343024014120", "5213002440142255104", "222661211220253465",
+            "17407603415406760", "2576748547233674", "545890816626160", "148a34aa4706535", "51285369b87494",
+            "1a57a38b045a95", "98b3383b9766c", "4319d1601875a", "1f07c1c360df0", "ffd471f34f13", "88g09ff9dh84",
+            "4d0d5e232c53", "2d63h403i580", "1bf5h8185hdj", "kc3g550fkcg", "d41id5k9984", "8ef5n0him4g", "5i2dijfe1la",
+            "3me22fm5fhi", "2hfmhgg73kd", "1ngpfabr53c", "18i7220bh11", "rm0lcjngpa", "kk1elesni1", "fgfge3c3fg",
+            "bp4q5l6bjg", "8xna46jp0k", "6wejomvji5", "5di2s1qhv4"}}},
+    {uint64_t{INT64_MAX},
+        {{"skip0", "skip1", "111111111111111111111111111111111111111111111111111111111111111",
+            "2021110011022210012102010021220101220221", "13333333333333333333333333333333",
+            "1104332401304422434310311212", "1540241003031030222122211", "22341010611245052052300",
+            "777777777777777777777", "67404283172107811827", "9223372036854775807", "1728002635214590697",
+            "41a792678515120367", "10b269549075433c37", "4340724c6c71dc7a7", "160e2ad3246366807", "7fffffffffffffff",
+            "33d3d8307b214008", "16agh595df825fa7", "ba643dci0ffeehh", "5cbfjia3fh26ja7", "2heiciiie82dh97",
+            "1adaibb21dckfa7", "i6k448cf4192c2", "acd772jnc9l0l7", "64ie1focnn5g77", "3igoecjbmca687", "27c48l5b37oaop",
+            "1bk39f3ah3dmq7", "q1se8f0m04isb", "hajppbc1fc207", "bm03i95hia437", "7vvvvvvvvvvvv", "5hg4ck9jd4u37",
+            "3tdtk1v8j6tpp", "2pijmikexrxp7", "1y2p0ij32e8e7"}}},
+    {stress_chunks_positive,
+        {{"skip0", "skip1", "1010011010001000100100001011110000101100010101001001010111110100",
+            "2221221122020020011022001202200200202200", "22122020210023300230111021113310",
+            "1301130403021123030133211100", "2311004450342244200504500", "30325064311430214266301",
+            "1232104413605425112764", "87848206138052620680", "12000000345000678900", "2181782a1686924456a",
+            "54aa47a9058877b130", "150593a5b002c87b16", "571cad2b93c7760a8", "1c60d2676d4e53e00", "a68890bc2c5495f4",
+            "43499224707a4f4g", "1e052gdga1d26f40", "f06dh4g564c8a91", "769df0d9ace4h50", "3ee7bcj1ajghi4f",
+            "1k9agc4gfl0l43a", "10id7dakdlcjd22", "dge08fe0l5hl7c", "8184326d31ib60", "4ljbglf3cpim76",
+            "2pph66481kiiki", "1niph2ao132e58", "14qgbgk3c3iffg", "mhc35an1bhb00", "f78o8ur705ln5", "ad24gngm595fk",
+            "76e1n5i5v0ivl", "50wu8jsnks82g", "3ja41smfvqb1f", "2j64t3qgq0ut0"}}},
+    {14454900944617508688ULL,
+        {{"skip0", "skip1", "1100100010011010000111111101001011100011011000101000111101010000",
+            "10120022020112011211121221212101012220210", "30202122013331023203120220331100",
+            "1432224030234034034040234223", "3014532424232535441404120", "34610451042001242144165",
+            "1442320775134330507520", "116266464747855335823", "14454900944617508688", "266642a9a9471339935",
+            "662251403263939640", "1895280092bc310481", "68cb9c8292557406c", "23023deab20002893", "c89a1fd2e3628f50",
+            "50e7147a7db8ef84", "22a34a05086f78ec", "i1dgef04357g7i1", "8g90b882jcj8be8", "49c1kk35i0k24ic",
+            "272a16i54ebkacg", "15fdih7l3m7k8md", "gbj7303eg9nge0", "9hckfdkj3kkdmd", "5lc7hifdkl4nne",
+            "3f86e4mgpna5ol", "266pj428na273c", "1bomgjbnlg4m3f", "r5tf1f7f009ji", "iarsig29iqhhm", "ch6gvqbhm53qg",
+            "8lwtvcdj6rlqr", "61w23lajggp44", "49p1f3dsqqcdx", "31tkqqkxypopc"}}},
+    {UINT64_MAX,
+        {{"skip0", "skip1", "1111111111111111111111111111111111111111111111111111111111111111",
+            "11112220022122120101211020120210210211220", "33333333333333333333333333333333",
+            "2214220303114400424121122430", "3520522010102100444244423", "45012021522523134134601",
+            "1777777777777777777777", "145808576354216723756", "18446744073709551615", "335500516a429071284",
+            "839365134a2a240713", "219505a9511a867b72", "8681049adb03db171", "2c1d56b648c6cd110", "ffffffffffffffff",
+            "67979g60f5428010", "2d3fgb0b9cg4bd2f", "141c8786h1ccaagg", "b53bjh07be4dj0f", "5e8g4ggg7g56dif",
+            "2l4lf104353j8kf", "1ddh88h2782i515", "l12ee5fn0ji1if", "c9c336o0mlb7ef", "7b7n2pcniokcgf",
+            "4eo8hfam6fllmo", "2nc6j26l66rhof", "1n3rsh11f098rn", "14l9lkmo30o40f", "nd075ib45k86f", "fvvvvvvvvvvvv",
+            "b1w8p7j5q9r6f", "7orp63sh4dphh", "5g24a25twkwff", "3w5e11264sgsf"}}},
+};
+
+// https://www.wolframalpha.com : Table[BaseForm[k, n], {k, {MEOW, MEOW, MEOW}}, {n, 2, 36}]
+constexpr int64_t stress_chunks_negative                          = -9000876000000054321LL;
+constexpr pair<int64_t, array<const char*, 37>> output_negative[] = {
+    {-85, {{"skip0", "skip1", "-1010101", "-10011", "-1111", "-320", "-221", "-151", "-125", "-104", "-85", "-78",
+              "-71", "-67", "-61", "-5a", "-55", "-50", "-4d", "-49", "-45", "-41", "-3j", "-3g", "-3d", "-3a", "-37",
+              "-34", "-31", "-2r", "-2p", "-2n", "-2l", "-2j", "-2h", "-2f", "-2d"}}},
+    {INT8_MIN, {{"skip0", "skip1", "-10000000", "-11202", "-2000", "-1003", "-332", "-242", "-200", "-152", "-128",
+                   "-107", "-a8", "-9b", "-92", "-88", "-80", "-79", "-72", "-6e", "-68", "-62", "-5i", "-5d", "-58",
+                   "-53", "-4o", "-4k", "-4g", "-4c", "-48", "-44", "-40", "-3t", "-3q", "-3n", "-3k"}}},
+    {-1591, {{"skip0", "skip1", "-11000110111", "-2011221", "-120313", "-22331", "-11211", "-4432", "-3067", "-2157",
+                "-1591", "-1217", "-b07", "-955", "-819", "-711", "-637", "-58a", "-4g7", "-47e", "-3jb", "-3cg",
+                "-367", "-304", "-2i7", "-2dg", "-295", "-24p", "-20n", "-1pp", "-1n1", "-1ka", "-1hn", "-1f7", "-1cr",
+                "-1ag", "-187"}}},
+    {INT16_MIN, {{"skip0", "skip1", "-1000000000000000", "-1122221122", "-20000000", "-2022033", "-411412", "-164351",
+                    "-100000", "-48848", "-32768", "-2268a", "-16b68", "-11bb8", "-bd28", "-9a98", "-8000", "-6b69",
+                    "-5b28", "-4eec", "-41i8", "-3b68", "-31fa", "-2flg", "-28l8", "-22ai", "-1mc8", "-1hph", "-1dm8",
+                    "-19rr", "-16c8", "-1331", "-1000", "-u2w", "-sbq", "-qq8", "-pa8"}}},
+    {-66748412,
+        {{"skip0", "skip1", "-11111110100111111111111100", "-11122121011121102", "-3332213333330", "-114041422122",
+            "-10342352232", "-1440231533", "-376477774", "-148534542", "-66748412", "-34750085", "-1a42b678",
+            "-10aa0803", "-8c1731a", "-5cd7492", "-3fa7ffc", "-2d03163", "-1h5f3b2", "-17i39c6", "-10h3b0c", "-g749jh",
+            "-ckkdkg", "-a8c0ak", "-894afk", "-6klmbc", "-5g1i6g", "-4hg4gb", "-3ogi7o", "-37anqb", "-2mc4r2",
+            "-2a8h7i", "-1vkvvs", "-1n9ca5", "-1fw8sk", "-19gshh", "-13qnek"}}},
+    {INT32_MIN, {{"skip0", "skip1", "-10000000000000000000000000000000", "-12112122212110202102", "-2000000000000000",
+                    "-13344223434043", "-553032005532", "-104134211162", "-20000000000", "-5478773672", "-2147483648",
+                    "-a02220282", "-4bb2308a8", "-282ba4aab", "-1652ca932", "-c87e66b8", "-80000000", "-53g7f549",
+                    "-3928g3h2", "-27c57h33", "-1db1f928", "-140h2d92", "-ikf5bf2", "-ebelf96", "-b5gge58", "-8jmdnkn",
+                    "-6oj8ioo", "-5ehnckb", "-4clm98g", "-3hk7988", "-2sb6cs8", "-2d09uc2", "-2000000", "-1lsqtl2",
+                    "-1d8xqrq", "-15v22un", "-zik0zk"}}},
+    {-297139747082649553LL,
+        {{"skip0", "skip1", "-10000011111101001110000011010010001100000101011111111010001",
+            "-1222110012002112101210012211022102101", "-100133221300122101200223333101", "-4443033200104011124241203",
+            "-21313431255203203120401", "-350320603201030412545", "-20375160322140537721", "-1873162471705738371",
+            "-297139747082649553", "-65150976074a24025", "-173522497b5373101", "-5a60a99bc3b71654", "-1ca51a06cc38ba25",
+            "-a2a25babe62241d", "-41fa7069182bfd1", "-1d00134fba1769g", "-e4f799fc5f7e81", "-714ebbh8388188",
+            "-3cahb17836b3hd", "-1j8659jf5hbg3j", "-112bbb2jege5c5", "-dcjfmk2kjb4cc", "-836bm4klbgl61",
+            "-4ofia1416ee73", "-32ommgjef1l2h", "-1qc52eal5m8ba", "-17n53r05a4r15", "-oa88m2qiqjik", "-gn67qoat5r8d",
+            "-blgd6n5s90al", "-87t70q8o5fuh", "-5t09hwaqu9qg", "-47vssihaoa4x", "-32p24fbjye7x", "-299r8zck3841"}}},
+    {stress_chunks_negative,
+        {{"skip0", "skip1", "-111110011101001100010010000100010000111010101111001010000110001",
+            "-2012222010200021010000112111002001111200", "-13303221202100202013111321100301",
+            "-1101001100304341000003214241", "-1522150121302454031001413", "-22054250360123016161454",
+            "-763514220420725712061", "-65863607100474061450", "-9000876000000054321", "-1689813530958833498",
+            "-408258185a67069269", "-106b01597a47ba2948", "-41c02922bc776d49b", "-1584cd10979dc84b6",
+            "-7ce9890887579431", "-327cf6cbc67023c3", "-1604b5f6a0de8129", "-b50d3ef02f124a4", "-59h9bfif0006fg1",
+            "-2g5d8ekh05d2dfi", "-19i418c38g1chfj", "-hjgf7d0k0gla9a", "-a6b21ncehfa3f9", "-61060fnl003bml",
+            "-3g88bakondgf8l", "-25q3i730ed21di", "-1al84glo518iip", "-pcli8ig7pjhbo", "-gs31q8id2jnkl",
+            "-bd7kaglgdrbgk", "-7pqc9123lf51h", "-5d2sd1r5ms7su", "-3q833s8kdrun3", "-2n7vmqigfueqb",
+            "-1wdu892toj0a9"}}},
+    {INT64_MIN, {{"skip0", "skip1", "-1000000000000000000000000000000000000000000000000000000000000000",
+                    "-2021110011022210012102010021220101220222", "-20000000000000000000000000000000",
+                    "-1104332401304422434310311213", "-1540241003031030222122212", "-22341010611245052052301",
+                    "-1000000000000000000000", "-67404283172107811828", "-9223372036854775808", "-1728002635214590698",
+                    "-41a792678515120368", "-10b269549075433c38", "-4340724c6c71dc7a8", "-160e2ad3246366808",
+                    "-8000000000000000", "-33d3d8307b214009", "-16agh595df825fa8", "-ba643dci0ffeehi",
+                    "-5cbfjia3fh26ja8", "-2heiciiie82dh98", "-1adaibb21dckfa8", "-i6k448cf4192c3", "-acd772jnc9l0l8",
+                    "-64ie1focnn5g78", "-3igoecjbmca688", "-27c48l5b37oaoq", "-1bk39f3ah3dmq8", "-q1se8f0m04isc",
+                    "-hajppbc1fc208", "-bm03i95hia438", "-8000000000000", "-5hg4ck9jd4u38", "-3tdtk1v8j6tpq",
+                    "-2pijmikexrxp8", "-1y2p0ij32e8e8"}}},
+};
+
+template <typename T>
+void test_integer_to_chars() {
+    for (int base = 2; base <= 36; ++base) {
+        test_integer_to_chars(static_cast<T>(0), base, "0");
+        test_integer_to_chars(static_cast<T>(1), base, "1");
+
+        // tests [3, 71]
+        test_integer_to_chars(static_cast<T>(base * 2 - 1), base, output_max_digit[base]);
+
+        for (const auto& p : output_positive) {
+            if (p.first <= static_cast<uint64_t>(numeric_limits<T>::max())) {
+                test_integer_to_chars(static_cast<T>(p.first), base, p.second[static_cast<size_t>(base)]);
+            }
+        }
+
+        if constexpr (is_signed_v<T>) {
+            test_integer_to_chars(static_cast<T>(-1), base, "-1");
+
+            for (const auto& p : output_negative) {
+                if (p.first >= static_cast<int64_t>(numeric_limits<T>::min())) {
+                    test_integer_to_chars(static_cast<T>(p.first), base, p.second[static_cast<size_t>(base)]);
+                }
+            }
+        }
+    }
+
+    test_integer_to_chars(static_cast<T>(42), nullopt, "42");
+}
+
+enum class TestFromCharsMode { Normal, SignalingNaN };
+
+template <typename T, typename BaseOrFmt>
+void test_from_chars(const string_view input, const BaseOrFmt base_or_fmt, const size_t correct_idx,
+    const errc correct_ec, const optional<T> opt_correct = nullopt,
+    const TestFromCharsMode mode = TestFromCharsMode::Normal) {
+
+    if constexpr (is_integral_v<T>) {
+        assert(mode == TestFromCharsMode::Normal);
+    }
+
+    constexpr T unmodified = 111;
+
+    T dest = unmodified;
+
+    const from_chars_result result = from_chars(input.data(), input.data() + input.size(), dest, base_or_fmt);
+
+    assert(result.ptr == input.data() + correct_idx);
+    assert(result.ec == correct_ec);
+
+    if (correct_ec == errc{} || (is_floating_point_v<T> && correct_ec == errc::result_out_of_range)) {
+        if constexpr (is_floating_point_v<T>) {
+            if (mode == TestFromCharsMode::Normal) {
+                using Uint = conditional_t<is_same_v<T, float>, uint32_t, uint64_t>;
+                assert(opt_correct.has_value());
+                assert(_Bit_cast<Uint>(dest) == _Bit_cast<Uint>(opt_correct.value()));
+            } else {
+                assert(mode == TestFromCharsMode::SignalingNaN);
+                assert(!opt_correct.has_value());
+                assert(isnan(dest));
+            }
+        } else {
+            assert(opt_correct.has_value());
+            assert(dest == opt_correct.value());
+        }
+    } else {
+        assert(!opt_correct.has_value());
+        assert(dest == unmodified);
+    }
+}
+
+constexpr errc inv_arg = errc::invalid_argument;
+constexpr errc out_ran = errc::result_out_of_range;
+
+template <typename T>
+void test_integer_from_chars() {
+    for (int base = 2; base <= 36; ++base) {
+        test_from_chars<T>("", base, 0, inv_arg); // no characters
+        test_from_chars<T>("@1", base, 0, inv_arg); // '@' is bogus
+        test_from_chars<T>(".1", base, 0, inv_arg); // '.' is bogus, for integers
+        test_from_chars<T>("+1", base, 0, inv_arg); // '+' is bogus, N4713 23.20.3 [charconv.from.chars]/3
+                                                    // "a minus sign is the only sign that may appear"
+        test_from_chars<T>(" 1", base, 0, inv_arg); // ' ' is bogus, no whitespace in subject sequence
+
+        if constexpr (is_unsigned_v<T>) { // N4713 23.20.3 [charconv.from.chars]/3
+            test_from_chars<T>("-1", base, 0, inv_arg); // "and only if value has a signed type"
+        }
+
+        // N4713 23.20.3 [charconv.from.chars]/1 "[ Note: If the pattern allows for an optional sign,
+        // but the string has no digit characters following the sign, no characters match the pattern. -end note ]"
+        test_from_chars<T>("-", base, 0, inv_arg); // '-' followed by no characters
+        test_from_chars<T>("-@1", base, 0, inv_arg); // '-' followed by bogus '@'
+        test_from_chars<T>("-.1", base, 0, inv_arg); // '-' followed by bogus '.'
+        test_from_chars<T>("-+1", base, 0, inv_arg); // '-' followed by bogus '+'
+        test_from_chars<T>("- 1", base, 0, inv_arg); // '-' followed by bogus ' '
+        test_from_chars<T>("--1", base, 0, inv_arg); // '-' can't be repeated
+
+        vector<char> bogus_digits;
+
+        if (base < 10) {
+            bogus_digits = {static_cast<char>('0' + base), 'A', 'a'};
+        } else {
+            // '[' and '{' are bogus for base 36
+            bogus_digits = {static_cast<char>('A' + (base - 10)), static_cast<char>('a' + (base - 10))};
+        }
+
+        for (const auto& bogus : bogus_digits) {
+            test_from_chars<T>(bogus + "1"s, base, 0, inv_arg); // bogus digit (for this base)
+            test_from_chars<T>("-"s + bogus + "1"s, base, 0, inv_arg); // '-' followed by bogus digit
+        }
+
+        // Test leading zeroes.
+        test_from_chars<T>(string(100, '0'), base, 100, errc{}, static_cast<T>(0));
+        test_from_chars<T>(string(100, '0') + "11"s, base, 102, errc{}, static_cast<T>(base + 1));
+
+        // Test negative zero and negative leading zeroes.
+        if constexpr (is_signed_v<T>) {
+            test_from_chars<T>("-0", base, 2, errc{}, static_cast<T>(0));
+            test_from_chars<T>("-"s + string(100, '0'), base, 101, errc{}, static_cast<T>(0));
+            test_from_chars<T>("-"s + string(100, '0') + "11"s, base, 103, errc{}, static_cast<T>(-base - 1));
+        }
+
+        // N4713 23.20.3 [charconv.from.chars]/1 "The member ptr of the return value points to the
+        // first character not matching the pattern, or has the value last if all characters match."
+        test_from_chars<T>("11", base, 2, errc{}, static_cast<T>(base + 1));
+        test_from_chars<T>("11@@@", base, 2, errc{}, static_cast<T>(base + 1));
+
+        // When overflowing, we need to keep consuming valid digits, in order to return ptr correctly.
+        test_from_chars<T>(string(100, '1'), base, 100, out_ran);
+        test_from_chars<T>(string(100, '1') + "@@@"s, base, 100, out_ran);
+
+        if constexpr (is_signed_v<T>) {
+            test_from_chars<T>("-"s + string(100, '1'), base, 101, out_ran);
+            test_from_chars<T>("-"s + string(100, '1') + "@@@"s, base, 101, out_ran);
+        }
+    }
+
+    // N4713 23.20.3 [charconv.from.chars]/3 "The pattern is the expected form of the subject sequence
+    // in the "C" locale for the given nonzero base, as described for strtol"
+    // C11 7.22.1.4/3 "The letters from a (or A) through z (or Z) are ascribed the values 10 through 35"
+    for (int i = 0; i < 26; ++i) {
+        test_from_chars<T>(string(1, static_cast<char>('A' + i)), 36, 1, errc{}, static_cast<T>(10 + i));
+        test_from_chars<T>(string(1, static_cast<char>('a' + i)), 36, 1, errc{}, static_cast<T>(10 + i));
+    }
+
+    // N4713 23.20.3 [charconv.from.chars]/3 "no "0x" or "0X" prefix shall appear if the value of base is 16"
+    test_from_chars<T>("0x1729", 16, 1, errc{}, static_cast<T>(0)); // reads '0', stops at 'x'
+    test_from_chars<T>("0X1729", 16, 1, errc{}, static_cast<T>(0)); // reads '0', stops at 'X'
+
+    if constexpr (is_signed_v<T>) {
+        test_from_chars<T>("-0x1729", 16, 2, errc{}, static_cast<T>(0)); // reads "-0", stops at 'x'
+        test_from_chars<T>("-0X1729", 16, 2, errc{}, static_cast<T>(0)); // reads "-0", stops at 'X'
+    }
+}
+
+template <typename T>
+void test_integer() {
+    test_integer_to_chars<T>();
+    test_integer_from_chars<T>();
+}
+
+void all_integer_tests() {
+    test_integer<char>();
+    test_integer<signed char>();
+    test_integer<unsigned char>();
+    test_integer<short>();
+    test_integer<unsigned short>();
+    test_integer<int>();
+    test_integer<unsigned int>();
+    test_integer<long>();
+    test_integer<unsigned long>();
+    test_integer<long long>();
+    test_integer<unsigned long long>();
+
+    // Test overflow scenarios.
+    test_from_chars<unsigned int>("4294967289", 10, 10, errc{}, 4294967289U); // not risky
+    test_from_chars<unsigned int>("4294967294", 10, 10, errc{}, 4294967294U); // risky with good digit
+    test_from_chars<unsigned int>("4294967295", 10, 10, errc{}, 4294967295U); // risky with max digit
+    test_from_chars<unsigned int>("4294967296", 10, 10, out_ran); // risky with bad digit
+    test_from_chars<unsigned int>("4294967300", 10, 10, out_ran); // beyond risky
+
+    test_from_chars<int>("2147483639", 10, 10, errc{}, 2147483639); // not risky
+    test_from_chars<int>("2147483646", 10, 10, errc{}, 2147483646); // risky with good digit
+    test_from_chars<int>("2147483647", 10, 10, errc{}, 2147483647); // risky with max digit
+    test_from_chars<int>("2147483648", 10, 10, out_ran); // risky with bad digit
+    test_from_chars<int>("2147483650", 10, 10, out_ran); // beyond risky
+
+    test_from_chars<int>("-2147483639", 10, 11, errc{}, -2147483639); // not risky
+    test_from_chars<int>("-2147483647", 10, 11, errc{}, -2147483647); // risky with good digit
+    test_from_chars<int>("-2147483648", 10, 11, errc{}, -2147483647 - 1); // risky with max digit
+    test_from_chars<int>("-2147483649", 10, 11, out_ran); // risky with bad digit
+    test_from_chars<int>("-2147483650", 10, 11, out_ran); // beyond risky
+}
+
+void assert_message_bits(const bool b, const char* const msg, const uint32_t bits) {
+    if (!b) {
+        fprintf(stderr, "%s failed for 0x%08zX\n", msg, static_cast<size_t>(bits));
+        fprintf(stderr, "This is a randomized test.\n");
+        fprintf(stderr, "DO NOT IGNORE/RERUN THIS FAILURE.\n");
+        fprintf(stderr, "You must report it to the STL maintainers.\n");
+        abort();
+    }
+}
+
+void assert_message_bits(const bool b, const char* const msg, const uint64_t bits) {
+    if (!b) {
+        // libc++ uses long for 64-bit values.
+        fprintf(stderr, "%s failed for 0x%016llX\n", msg, static_cast<unsigned long long>(bits));
+        fprintf(stderr, "This is a randomized test.\n");
+        fprintf(stderr, "DO NOT IGNORE/RERUN THIS FAILURE.\n");
+        fprintf(stderr, "You must report it to the STL maintainers.\n");
+        abort();
+    }
+}
+
+constexpr uint32_t FractionBits = 10; // Tunable for test coverage vs. performance.
+static_assert(FractionBits >= 1, "Must test at least 1 fraction bit.");
+static_assert(FractionBits <= 23, "There are only 23 fraction bits in a float.");
+
+constexpr uint32_t Fractions = 1U << FractionBits;
+constexpr uint32_t Mask32    = ~((1U << FractionBits) - 1U);
+constexpr uint64_t Mask64    = ~((1ULL << FractionBits) - 1ULL);
+
+constexpr uint32_t PrefixesToTest = 100; // Tunable for test coverage vs. performance.
+static_assert(PrefixesToTest >= 1, "Must test at least 1 prefix.");
+
+constexpr uint32_t PrefixLimit = 2 // sign bit
+                               * 255 // non-INF/NAN exponents for float
+                               * (1U << (23 - FractionBits)); // fraction bits in prefix
+static_assert(PrefixesToTest <= PrefixLimit, "Too many prefixes.");
+
+template <bool IsDouble>
+void test_floating_prefix(const conditional_t<IsDouble, uint64_t, uint32_t> prefix) {
+
+    using UIntType     = conditional_t<IsDouble, uint64_t, uint32_t>;
+    using FloatingType = conditional_t<IsDouble, double, float>;
+
+    // "-1.2345678901234567e-100" or "-1.23456789e-10"
+    constexpr size_t buffer_size = IsDouble ? 24 : 15;
+    char buffer[buffer_size];
+// TODO Enable once std::from_chars has floating point support.
+#if 0
+    FloatingType val;
+#endif
+
+    // Exact sizes are difficult to prove for fixed notation.
+    // This must be at least (IsDouble ? 327 : 48), and I suspect that that's exact.
+    // Here's a loose upper bound:
+    // 1 character for a negative sign
+    // + 325 (for double; 46 for float) characters in the "0.000~~~000" prefix of the min subnormal
+    // + 17 (for double; 9 for float) characters for round-trip digits
+    constexpr size_t fixed_buffer_size = IsDouble ? 1 + 325 + 17 : 1 + 46 + 9;
+    char fixed_buffer[fixed_buffer_size];
+
+    // worst case: negative sign + max normal + null terminator
+    constexpr size_t stdio_buffer_size = 1 + (IsDouble ? 309 : 39) + 1;
+    char stdio_buffer[stdio_buffer_size];
+
+    for (uint32_t frac = 0; frac < Fractions; ++frac) {
+        const UIntType bits      = prefix + frac;
+        const FloatingType input = _Bit_cast<FloatingType>(bits);
+
+        {
+            const auto to_result = to_chars(buffer, end(buffer), input, chars_format::scientific);
+            assert_message_bits(to_result.ec == errc{}, "to_result.ec", bits);
+// TODO Enable once std::from_chars has floating point support.
+#if 0
+            const char* const last = to_result.ptr;
+
+            const auto from_result = from_chars(buffer, last, val);
+
+            assert_message_bits(from_result.ptr == last, "from_result.ptr", bits);
+            assert_message_bits(from_result.ec == errc{}, "from_result.ec", bits);
+            assert_message_bits(_Bit_cast<UIntType>(val) == bits, "round-trip", bits);
+#endif
+        }
+
+        {
+            // Also verify that to_chars() and sprintf_s() emit the same output for integers in fixed notation.
+            const auto fixed_result = to_chars(fixed_buffer, end(fixed_buffer), input, chars_format::fixed);
+            assert_message_bits(fixed_result.ec == errc{}, "fixed_result.ec", bits);
+            const string_view fixed_sv(fixed_buffer, static_cast<size_t>(fixed_result.ptr - fixed_buffer));
+
+            if (find(fixed_sv.begin(), fixed_sv.end(), '.') == fixed_sv.end()) {
+                const int stdio_ret = sprintf_s(stdio_buffer, size(stdio_buffer), "%.0f", input);
+                assert_message_bits(stdio_ret != -1, "stdio_ret", bits);
+                const string_view stdio_sv(stdio_buffer);
+                assert_message_bits(fixed_sv == stdio_sv, "fixed_sv", bits);
+            }
+        }
+    }
+}
+
+template <bool IsDouble>
+void test_floating_hex_prefix(const conditional_t<IsDouble, uint64_t, uint32_t> prefix) {
+
+    using UIntType     = conditional_t<IsDouble, uint64_t, uint32_t>;
+    using FloatingType = conditional_t<IsDouble, double, float>;
+
+    // The precision is the number of hexits after the decimal point.
+    // These hexits correspond to the explicitly stored fraction bits.
+    // double explicitly stores 52 fraction bits. 52 / 4 == 13, so we need 13 hexits.
+    // float explicitly stores 23 fraction bits. 23 / 4 == 5.75, so we need 6 hexits.
+
+    // "-1.fffffffffffffp+1023" or "-1.fffffep+127"
+    constexpr size_t buffer_size = IsDouble ? 22 : 14;
+    char buffer[buffer_size];
+// TODO Enable once std::from_chars has floating point support.
+#if 0
+    FloatingType val;
+#endif
+
+    for (uint32_t frac = 0; frac < Fractions; ++frac) {
+        const UIntType bits      = prefix + frac;
+        const FloatingType input = _Bit_cast<FloatingType>(bits);
+
+        const auto to_result = to_chars(buffer, end(buffer), input, chars_format::hex);
+        assert_message_bits(to_result.ec == errc{}, "(hex) to_result.ec", bits);
+// TODO Enable once std::from_chars has floating point support.
+#if 0
+        const char* const last = to_result.ptr;
+
+        const auto from_result = from_chars(buffer, last, val, chars_format::hex);
+
+        assert_message_bits(from_result.ptr == last, "(hex) from_result.ptr", bits);
+        assert_message_bits(from_result.ec == errc{}, "(hex) from_result.ec", bits);
+        assert_message_bits(_Bit_cast<UIntType>(val) == bits, "(hex) round-trip", bits);
+#endif
+    }
+}
+
+template <bool IsDouble>
+void test_floating_precision_prefix(const conditional_t<IsDouble, uint64_t, uint32_t> prefix) {
+
+    using UIntType     = conditional_t<IsDouble, uint64_t, uint32_t>;
+    using FloatingType = conditional_t<IsDouble, double, float>;
+
+    // Precision for min subnormal in fixed notation. (More than enough for scientific notation.)
+    constexpr int precision = IsDouble ? 1074 : 149;
+
+    // Number of digits for max normal in fixed notation.
+    constexpr int max_integer_length = IsDouble ? 309 : 39;
+
+    // Size for fixed notation. (More than enough for scientific notation.)
+    constexpr size_t charconv_buffer_size = 1 // negative sign
+                                          + max_integer_length // integer digits
+                                          + 1 // decimal point
+                                          + precision; // fractional digits
+    char charconv_buffer[charconv_buffer_size];
+
+    constexpr size_t stdio_buffer_size = charconv_buffer_size + 1; // null terminator
+    char stdio_buffer[stdio_buffer_size];
+
+    // 1 character for a negative sign
+    // + worst cases: 0x1.fffffffffffffp-1022 and 0x1.fffffep-126f
+    constexpr size_t general_buffer_size = 1 + (IsDouble ? 773 : 117);
+    char general_buffer[general_buffer_size];
+    char general_stdio_buffer[general_buffer_size + 1]; // + null terminator
+
+    for (uint32_t frac = 0; frac < Fractions; ++frac) {
+        const UIntType bits      = prefix + frac;
+        const FloatingType input = _Bit_cast<FloatingType>(bits);
+
+        auto result = to_chars(charconv_buffer, end(charconv_buffer), input, chars_format::fixed, precision);
+        assert_message_bits(result.ec == errc{}, "to_chars fixed precision", bits);
+        string_view charconv_sv(charconv_buffer, static_cast<size_t>(result.ptr - charconv_buffer));
+
+        int stdio_ret = sprintf_s(stdio_buffer, size(stdio_buffer), "%.*f", precision, input);
+        assert_message_bits(stdio_ret != -1, "sprintf_s fixed precision", bits);
+        string_view stdio_sv(stdio_buffer);
+
+        assert_message_bits(charconv_sv == stdio_sv, "fixed precision output", bits);
+
+
+        result = to_chars(charconv_buffer, end(charconv_buffer), input, chars_format::scientific, precision);
+        assert_message_bits(result.ec == errc{}, "to_chars scientific precision", bits);
+        charconv_sv = string_view(charconv_buffer, static_cast<size_t>(result.ptr - charconv_buffer));
+
+        stdio_ret = sprintf_s(stdio_buffer, size(stdio_buffer), "%.*e", precision, input);
+        assert_message_bits(stdio_ret != -1, "sprintf_s scientific precision", bits);
+        stdio_sv = stdio_buffer;
+
+        assert_message_bits(charconv_sv == stdio_sv, "scientific precision output", bits);
+
+
+        result = to_chars(general_buffer, end(general_buffer), input, chars_format::general, 5000);
+        assert_message_bits(result.ec == errc{}, "to_chars general precision", bits);
+        charconv_sv = string_view(general_buffer, static_cast<size_t>(result.ptr - general_buffer));
+
+        stdio_ret = sprintf_s(general_stdio_buffer, size(general_stdio_buffer), "%.5000g", input);
+        assert_message_bits(stdio_ret != -1, "sprintf_s general precision", bits);
+        stdio_sv = general_stdio_buffer;
+
+        assert_message_bits(charconv_sv == stdio_sv, "general precision output", bits);
+    }
+}
+
+void test_floating_prefixes(mt19937_64& mt64) {
+    {
+        set<uint64_t> prefixes64;
+
+        while (prefixes64.size() < PrefixesToTest) {
+            const uint64_t val = mt64();
+
+            if ((val & 0x7FF0000000000000ULL) != 0x7FF0000000000000ULL) { // skip INF/NAN
+                prefixes64.insert(val & Mask64);
+            }
+        }
+
+        for (const auto& prefix : prefixes64) {
+            test_floating_prefix<true>(prefix);
+            test_floating_precision_prefix<true>(prefix);
+        }
+
+        test_floating_hex_prefix<true>(*prefixes64.begin()); // save time by testing fewer hexfloats
+    }
+
+    {
+        set<uint32_t> prefixes32;
+
+        while (prefixes32.size() < PrefixesToTest) {
+            const uint32_t val = static_cast<uint32_t>(mt64());
+
+            if ((val & 0x7F800000U) != 0x7F800000U) { // skip INF/NAN
+                prefixes32.insert(val & Mask32);
+            }
+        }
+
+        for (const auto& prefix : prefixes32) {
+            test_floating_prefix<false>(prefix);
+            test_floating_precision_prefix<false>(prefix);
+        }
+
+        test_floating_hex_prefix<false>(*prefixes32.begin()); // save time by testing fewer hexfloats
+    }
+}
+
+// TODO Enable once std::from_chars has floating point support.
+#if 0
+template <typename T>
+void test_floating_from_chars(const chars_format fmt) {
+    test_from_chars<T>("", fmt, 0, inv_arg); // no characters
+    test_from_chars<T>("@1", fmt, 0, inv_arg); // '@' is bogus
+    test_from_chars<T>("z1", fmt, 0, inv_arg); // 'z' is bogus
+    test_from_chars<T>(".", fmt, 0, inv_arg); // '.' without digits is bogus
+    test_from_chars<T>("+1", fmt, 0, inv_arg); // '+' is bogus
+    test_from_chars<T>(" 1", fmt, 0, inv_arg); // ' ' is bogus
+    test_from_chars<T>("p5", fmt, 0, inv_arg); // binary-exponent-part without digits is bogus
+    test_from_chars<T>("in", fmt, 0, inv_arg); // incomplete inf is bogus
+    test_from_chars<T>("na", fmt, 0, inv_arg); // incomplete nan is bogus
+
+    test_from_chars<T>("-", fmt, 0, inv_arg); // '-' followed by no characters
+    test_from_chars<T>("-@1", fmt, 0, inv_arg); // '-' followed by bogus '@'
+    test_from_chars<T>("-z1", fmt, 0, inv_arg); // '-' followed by bogus 'z'
+    test_from_chars<T>("-.", fmt, 0, inv_arg); // '-' followed by bogus '.'
+    test_from_chars<T>("-+1", fmt, 0, inv_arg); // '-' followed by bogus '+'
+    test_from_chars<T>("- 1", fmt, 0, inv_arg); // '-' followed by bogus ' '
+    test_from_chars<T>("-p5", fmt, 0, inv_arg); // '-' followed by bogus binary-exponent-part
+    test_from_chars<T>("-in", fmt, 0, inv_arg); // '-' followed by bogus incomplete inf
+    test_from_chars<T>("-na", fmt, 0, inv_arg); // '-' followed by bogus incomplete nan
+    test_from_chars<T>("--1", fmt, 0, inv_arg); // '-' can't be repeated
+
+    if (fmt != chars_format::hex) { // "e5" are valid hexits
+        test_from_chars<T>("e5", fmt, 0, inv_arg); // exponent-part without digits is bogus
+        test_from_chars<T>("-e5", fmt, 0, inv_arg); // '-' followed by bogus exponent-part
+    }
+
+    constexpr T inf  = numeric_limits<T>::infinity();
+    constexpr T qnan = numeric_limits<T>::quiet_NaN();
+
+    test_from_chars<T>("InF", fmt, 3, errc{}, inf);
+    test_from_chars<T>("infinite", fmt, 3, errc{}, inf);
+    test_from_chars<T>("iNfInItY", fmt, 8, errc{}, inf);
+    test_from_chars<T>("InfinityMeow", fmt, 8, errc{}, inf);
+
+    test_from_chars<T>("-InF", fmt, 4, errc{}, -inf);
+    test_from_chars<T>("-infinite", fmt, 4, errc{}, -inf);
+    test_from_chars<T>("-iNfInItY", fmt, 9, errc{}, -inf);
+    test_from_chars<T>("-InfinityMeow", fmt, 9, errc{}, -inf);
+
+    test_from_chars<T>("NaN", fmt, 3, errc{}, qnan);
+    test_from_chars<T>("nanotech", fmt, 3, errc{}, qnan);
+    test_from_chars<T>("nan(", fmt, 3, errc{}, qnan);
+    test_from_chars<T>("nan(@)", fmt, 3, errc{}, qnan);
+    test_from_chars<T>("nan(()", fmt, 3, errc{}, qnan);
+    test_from_chars<T>("nan(abc", fmt, 3, errc{}, qnan);
+    test_from_chars<T>("nan()", fmt, 5, errc{}, qnan);
+    test_from_chars<T>("nan(abc)def", fmt, 8, errc{}, qnan);
+    test_from_chars<T>("nan(_09AZaz)", fmt, 12, errc{}, qnan);
+    test_from_chars<T>("nan(int)", fmt, 8, errc{}, qnan);
+    test_from_chars<T>("nan(snap)", fmt, 9, errc{}, qnan);
+
+    test_from_chars<T>("-NaN", fmt, 4, errc{}, -qnan);
+    test_from_chars<T>("-nanotech", fmt, 4, errc{}, -qnan);
+    test_from_chars<T>("-nan(", fmt, 4, errc{}, -qnan);
+    test_from_chars<T>("-nan(@)", fmt, 4, errc{}, -qnan);
+    test_from_chars<T>("-nan(()", fmt, 4, errc{}, -qnan);
+    test_from_chars<T>("-nan(abc", fmt, 4, errc{}, -qnan);
+    test_from_chars<T>("-nan()", fmt, 6, errc{}, -qnan);
+    test_from_chars<T>("-nan(abc)def", fmt, 9, errc{}, -qnan);
+    test_from_chars<T>("-nan(_09AZaz)", fmt, 13, errc{}, -qnan);
+    test_from_chars<T>("-nan(int)", fmt, 9, errc{}, -qnan);
+    test_from_chars<T>("-nan(snap)", fmt, 10, errc{}, -qnan);
+
+    // The UCRT considers indeterminate NaN to be negative quiet NaN with no payload bits set.
+    // It parses "nan(ind)" and "-nan(ind)" identically.
+    test_from_chars<T>("nan(InD)", fmt, 8, errc{}, -qnan);
+    test_from_chars<T>("-nan(InD)", fmt, 9, errc{}, -qnan);
+
+    test_from_chars<T>("nan(SnAn)", fmt, 9, errc{}, nullopt, TestFromCharsMode::SignalingNaN);
+    test_from_chars<T>("-nan(SnAn)", fmt, 10, errc{}, nullopt, TestFromCharsMode::SignalingNaN);
+
+    switch (fmt) {
+    case chars_format::general:
+        test_from_chars<T>("1729", fmt, 4, errc{}, T{1729});
+        test_from_chars<T>("1729e3", fmt, 6, errc{}, T{1729000});
+        test_from_chars<T>("10", fmt, 2, errc{}, T{10});
+        test_from_chars<T>("11.", fmt, 3, errc{}, T{11});
+        test_from_chars<T>("12.13", fmt, 5, errc{}, static_cast<T>(12.13)); // avoid truncation warning
+        test_from_chars<T>(".14", fmt, 3, errc{}, static_cast<T>(.14)); // avoid truncation warning
+        test_from_chars<T>("20e5", fmt, 4, errc{}, T{2000000});
+        test_from_chars<T>("21.e5", fmt, 5, errc{}, T{2100000});
+        test_from_chars<T>("22.23e5", fmt, 7, errc{}, T{2223000});
+        test_from_chars<T>(".24e5", fmt, 5, errc{}, T{24000});
+        test_from_chars<T>("33e+5", fmt, 5, errc{}, T{3300000});
+        test_from_chars<T>("33e-5", fmt, 5, errc{}, static_cast<T>(.00033)); // avoid truncation warning
+        test_from_chars<T>("4E7", fmt, 3, errc{}, T{40000000});
+        test_from_chars<T>("-00123abc", fmt, 6, errc{}, T{-123});
+        test_from_chars<T>(".0045000", fmt, 8, errc{}, static_cast<T>(.0045)); // avoid truncation warning
+        test_from_chars<T>("000", fmt, 3, errc{}, T{0});
+        test_from_chars<T>("0e9999", fmt, 6, errc{}, T{0});
+        test_from_chars<T>("0e-9999", fmt, 7, errc{}, T{0});
+        test_from_chars<T>("-000", fmt, 4, errc{}, T{-0.0});
+        test_from_chars<T>("-0e9999", fmt, 7, errc{}, T{-0.0});
+        test_from_chars<T>("-0e-9999", fmt, 8, errc{}, T{-0.0});
+        test_from_chars<T>("1e9999", fmt, 6, errc::result_out_of_range, inf);
+        test_from_chars<T>("-1e9999", fmt, 7, errc::result_out_of_range, -inf);
+        test_from_chars<T>("1e-9999", fmt, 7, errc::result_out_of_range, T{0});
+        test_from_chars<T>("-1e-9999", fmt, 8, errc::result_out_of_range, T{-0.0});
+        test_from_chars<T>("1" + string(6000, '0'), fmt, 6001, errc::result_out_of_range, inf);
+        test_from_chars<T>("-1" + string(6000, '0'), fmt, 6002, errc::result_out_of_range, -inf);
+        test_from_chars<T>("." + string(6000, '0') + "1", fmt, 6002, errc::result_out_of_range, T{0});
+        test_from_chars<T>("-." + string(6000, '0') + "1", fmt, 6003, errc::result_out_of_range, T{-0.0});
+        test_from_chars<T>("1" + string(500, '0'), fmt, 501, errc::result_out_of_range, inf);
+        test_from_chars<T>("-1" + string(500, '0'), fmt, 502, errc::result_out_of_range, -inf);
+        test_from_chars<T>("." + string(500, '0') + "1", fmt, 502, errc::result_out_of_range, T{0});
+        test_from_chars<T>("-." + string(500, '0') + "1", fmt, 503, errc::result_out_of_range, T{-0.0});
+        break;
+    case chars_format::scientific:
+        test_from_chars<T>("1729", fmt, 0, inv_arg);
+        test_from_chars<T>("1729e3", fmt, 6, errc{}, T{1729000});
+        break;
+    case chars_format::fixed:
+        test_from_chars<T>("1729", fmt, 4, errc{}, T{1729});
+        test_from_chars<T>("1729e3", fmt, 4, errc{}, T{1729});
+        break;
+    case chars_format::hex:
+        test_from_chars<T>("0x123", fmt, 1, errc{}, T{0});
+        test_from_chars<T>("a0", fmt, 2, errc{}, T{160});
+        test_from_chars<T>("a1.", fmt, 3, errc{}, T{161});
+        test_from_chars<T>("a2.a3", fmt, 5, errc{}, T{162.63671875});
+        test_from_chars<T>(".a4", fmt, 3, errc{}, T{0.640625});
+        test_from_chars<T>("a0p5", fmt, 4, errc{}, T{5120});
+        test_from_chars<T>("a1.p5", fmt, 5, errc{}, T{5152});
+        test_from_chars<T>("a2.a3p5", fmt, 7, errc{}, T{5204.375});
+        test_from_chars<T>(".a4p5", fmt, 5, errc{}, T{20.5});
+        test_from_chars<T>("a0p+5", fmt, 5, errc{}, T{5120});
+        test_from_chars<T>("a0p-5", fmt, 5, errc{}, T{5});
+        test_from_chars<T>("ABCDEFP3", fmt, 8, errc{}, T{90075000});
+        test_from_chars<T>("-00cdrom", fmt, 5, errc{}, T{-205});
+        test_from_chars<T>(".00ef000", fmt, 8, errc{}, T{0.0036468505859375});
+        test_from_chars<T>("000", fmt, 3, errc{}, T{0});
+        test_from_chars<T>("0p9999", fmt, 6, errc{}, T{0});
+        test_from_chars<T>("0p-9999", fmt, 7, errc{}, T{0});
+        test_from_chars<T>("-000", fmt, 4, errc{}, T{-0.0});
+        test_from_chars<T>("-0p9999", fmt, 7, errc{}, T{-0.0});
+        test_from_chars<T>("-0p-9999", fmt, 8, errc{}, T{-0.0});
+        test_from_chars<T>("1p9999", fmt, 6, errc::result_out_of_range, inf);
+        test_from_chars<T>("-1p9999", fmt, 7, errc::result_out_of_range, -inf);
+        test_from_chars<T>("1p-9999", fmt, 7, errc::result_out_of_range, T{0});
+        test_from_chars<T>("-1p-9999", fmt, 8, errc::result_out_of_range, T{-0.0});
+        test_from_chars<T>("1" + string(2000, '0'), fmt, 2001, errc::result_out_of_range, inf);
+        test_from_chars<T>("-1" + string(2000, '0'), fmt, 2002, errc::result_out_of_range, -inf);
+        test_from_chars<T>("." + string(2000, '0') + "1", fmt, 2002, errc::result_out_of_range, T{0});
+        test_from_chars<T>("-." + string(2000, '0') + "1", fmt, 2003, errc::result_out_of_range, T{-0.0});
+        test_from_chars<T>("1" + string(300, '0'), fmt, 301, errc::result_out_of_range, inf);
+        test_from_chars<T>("-1" + string(300, '0'), fmt, 302, errc::result_out_of_range, -inf);
+        test_from_chars<T>("." + string(300, '0') + "1", fmt, 302, errc::result_out_of_range, T{0});
+        test_from_chars<T>("-." + string(300, '0') + "1", fmt, 303, errc::result_out_of_range, T{-0.0});
+        break;
+    }
+}
+#endif
+
+template <typename T>
+void test_floating_to_chars(
+    const T value, const optional<chars_format> opt_fmt, const optional<int> opt_precision, const string_view correct) {
+
+    test_common_to_chars(value, opt_fmt, opt_precision, correct);
+}
+
+void all_floating_tests(mt19937_64& mt64) {
+    test_floating_prefixes(mt64);
+
+// TODO Enable once std::from_chars has floating point support.
+#if 0
+    for (const auto& fmt : {chars_format::general, chars_format::scientific, chars_format::fixed, chars_format::hex}) {
+        test_floating_from_chars<float>(fmt);
+        test_floating_from_chars<double>(fmt);
+    }
+
+    // Test rounding.
+
+    // See float_from_chars_test_cases.hpp in this directory.
+    for (const auto& t : float_from_chars_test_cases) {
+        test_from_chars<float>(t.input, t.fmt, t.correct_idx, t.correct_ec, t.correct_value);
+    }
+
+    // See double_from_chars_test_cases.hpp in this directory.
+    for (const auto& t : double_from_chars_test_cases) {
+        test_from_chars<double>(t.input, t.fmt, t.correct_idx, t.correct_ec, t.correct_value);
+    }
+
+    {
+        // See LWG-2403. This number (exactly 0x1.fffffd00000004 in infinite precision) behaves differently
+        // when parsed as double and converted to float, versus being parsed as float directly.
+        const char* const lwg_2403          = "1.999999821186065729339276231257827021181583404541015625";
+        constexpr float correct_float       = 0x1.fffffep0f;
+        constexpr double correct_double     = 0x1.fffffdp0;
+        constexpr float twice_rounded_float = 0x1.fffffcp0f;
+
+        test_from_chars<float>(lwg_2403, chars_format::general, 56, errc{}, correct_float);
+        test_from_chars<double>(lwg_2403, chars_format::general, 56, errc{}, correct_double);
+        static_assert(static_cast<float>(correct_double) == twice_rounded_float);
+    }
+
+    // See floating_point_test_cases.hpp.
+    for (const auto& p : floating_point_test_cases_float) {
+        test_from_chars<float>(p.first, chars_format::general, strlen(p.first), errc{}, _Bit_cast<float>(p.second));
+    }
+
+    for (const auto& p : floating_point_test_cases_double) {
+        test_from_chars<double>(p.first, chars_format::general, strlen(p.first), errc{}, _Bit_cast<double>(p.second));
+    }
+#endif
+    // See float_to_chars_test_cases.hpp in this directory.
+    for (const auto& t : float_to_chars_test_cases) {
+        if (t.fmt == chars_format{}) {
+            test_floating_to_chars(t.value, nullopt, nullopt, t.correct);
+        } else {
+            test_floating_to_chars(t.value, t.fmt, nullopt, t.correct);
+        }
+    }
+
+    // See double_to_chars_test_cases.hpp in this directory.
+    for (const auto& t : double_to_chars_test_cases) {
+        if (t.fmt == chars_format{}) {
+            test_floating_to_chars(t.value, nullopt, nullopt, t.correct);
+        } else {
+            test_floating_to_chars(t.value, t.fmt, nullopt, t.correct);
+        }
+    }
+
+    // See corresponding headers in this directory.
+    for (const auto& t : float_hex_precision_to_chars_test_cases) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : float_fixed_precision_to_chars_test_cases) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : float_scientific_precision_to_chars_test_cases) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : float_general_precision_to_chars_test_cases) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_hex_precision_to_chars_test_cases) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_fixed_precision_to_chars_test_cases_1) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_fixed_precision_to_chars_test_cases_2) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_fixed_precision_to_chars_test_cases_3) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_fixed_precision_to_chars_test_cases_4) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_scientific_precision_to_chars_test_cases_1) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_scientific_precision_to_chars_test_cases_2) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_scientific_precision_to_chars_test_cases_3) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_scientific_precision_to_chars_test_cases_4) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+    for (const auto& t : double_general_precision_to_chars_test_cases) {
+        test_floating_to_chars(t.value, t.fmt, t.precision, t.correct);
+    }
+}
+
+int main(int argc, char** argv) {
+    const auto start = chrono::steady_clock::now();
+
+    mt19937_64 mt64;
+
+    initialize_randomness(mt64, argc, argv);
+
+    all_integer_tests();
+
+    all_floating_tests(mt64);
+
+    const auto finish  = chrono::steady_clock::now();
+    const long long ms = chrono::duration_cast<chrono::milliseconds>(finish - start).count();
+
+    puts("PASS");
+    printf("Randomized test cases: %zu\n", static_cast<size_t>(PrefixesToTest * Fractions));
+    printf("Total time: %lld ms\n", ms);
+
+    if (ms < 3'000) {
+        puts("That was fast. Consider tuning PrefixesToTest and FractionBits to test more cases.");
+    } else if (ms > 30'000) {
+        puts("That was slow. Consider tuning PrefixesToTest and FractionBits to test fewer cases.");
+    }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.hpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.hpp
new file mode 100644
index 0000000..3fdc0d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.hpp
@@ -0,0 +1,63 @@
+// Copyright (c) Microsoft Corporation.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef TEST_HPP
+#define TEST_HPP
+
+#include <charconv>
+#include <limits>
+#include <stddef.h>
+#include <system_error>
+using namespace std;
+
+inline constexpr float float_inf         = numeric_limits<float>::infinity();
+inline constexpr float float_nan         = numeric_limits<float>::quiet_NaN();
+inline constexpr float float_nan_payload = __builtin_nanf("1729");
+
+inline constexpr double double_inf         = numeric_limits<double>::infinity();
+inline constexpr double double_nan         = numeric_limits<double>::quiet_NaN();
+inline constexpr double double_nan_payload = __builtin_nan("1729");
+
+struct FloatFromCharsTestCase {
+    const char* input;
+    chars_format fmt;
+    size_t correct_idx;
+    errc correct_ec;
+    float correct_value;
+};
+
+struct FloatToCharsTestCase {
+    float value;
+    chars_format fmt;
+    const char* correct;
+};
+
+struct FloatPrecisionToCharsTestCase {
+    float value;
+    chars_format fmt;
+    int precision;
+    const char* correct;
+};
+
+struct DoubleFromCharsTestCase {
+    const char* input;
+    chars_format fmt;
+    size_t correct_idx;
+    errc correct_ec;
+    double correct_value;
+};
+
+struct DoubleToCharsTestCase {
+    double value;
+    chars_format fmt;
+    const char* correct;
+};
+
+struct DoublePrecisionToCharsTestCase {
+    double value;
+    chars_format fmt;
+    int precision;
+    const char* correct;
+};
+
+#endif // TEST_HPP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.pass.cpp
new file mode 100644
index 0000000..c1a4699
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.msvc/test.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// to_chars requires functions in the dylib that have not been introduced in older
+// versions of the dylib on macOS.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0}}
+
+// steady_clock requires threads.
+// UNSUPPORTED: no-threads
+// UNSUPPORTED: no-random-device
+// UNSUPPORTED: no-localization
+
+// XFAIL: LIBCXX-AIX-FIXME
+
+// <charconv>
+
+#include <type_traits>
+
+// Work-around for sprintf_s's usage in the Microsoft tests.
+#ifndef _WIN32
+#  define sprintf_s snprintf
+#endif
+
+#ifdef _MSVC_STL_VERSION
+#include <xutility>
+using std::_Bit_cast;
+#else
+// FUNCTION TEMPLATE _Bit_cast
+template <class _To, class _From,
+          std::enable_if_t<sizeof(_To) == sizeof(_From) && std::is_trivially_copyable_v<_To> &&
+                               std::is_trivially_copyable_v<_From>,
+                           int> = 0>
+[[nodiscard]] constexpr _To _Bit_cast(const _From& _From_obj) noexcept {
+  return __builtin_bit_cast(_To, _From_obj);
+}
+#endif
+
+// Includes Microsoft's test that tests the entire header.
+
+#include "test.cpp"
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/chars_format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/chars_format.pass.cpp
new file mode 100644
index 0000000..beee526
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/chars_format.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <charconv>
+
+// Bitmask type
+// enum class chars_format {
+//   scientific = unspecified,
+//   fixed = unspecified,
+//   hex = unspecified,
+//   general = fixed | scientific
+// };
+
+#include <charconv>
+#include <cassert>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  using cf = std::chars_format;
+  using ut = std::underlying_type<cf>::type;
+
+  {
+    cf x = cf::scientific;
+    x |= cf::fixed;
+    assert(x == cf::general);
+  }
+  {
+    cf x = cf::general;
+    x &= cf::fixed;
+    assert(x == cf::fixed);
+  }
+  {
+    cf x = cf::general;
+    x ^= cf::fixed;
+    assert(x == cf::scientific);
+  }
+
+  assert(static_cast<ut>(cf::scientific & (cf::fixed | cf::hex)) == 0);
+  assert(static_cast<ut>(cf::fixed & (cf::scientific | cf::hex)) == 0);
+  assert(static_cast<ut>(cf::hex & (cf::scientific | cf::fixed)) == 0);
+
+  assert((cf::scientific | cf::fixed) == cf::general);
+
+  assert(static_cast<ut>(cf::scientific & cf::fixed) == 0);
+
+  assert((cf::general ^ cf::fixed) == cf::scientific);
+
+  assert((~cf::hex & cf::general) == cf::general);
+
+  return true;
+}
+
+std::chars_format x;
+static_assert(std::is_same<std::chars_format, decltype(~x)>::value, "");
+static_assert(std::is_same<std::chars_format, decltype(x & x)>::value, "");
+static_assert(std::is_same<std::chars_format, decltype(x | x)>::value, "");
+static_assert(std::is_same<std::chars_format, decltype(x ^ x)>::value, "");
+static_assert(std::is_same<std::chars_format&, decltype(x &= x)>::value, "");
+static_assert(std::is_same<std::chars_format&, decltype(x |= x)>::value, "");
+static_assert(std::is_same<std::chars_format&, decltype(x ^= x)>::value, "");
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test(), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/from_chars_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/from_chars_result.pass.cpp
new file mode 100644
index 0000000..f218967
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/from_chars_result.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <charconv>
+
+// struct from_chars_result
+//   friend bool operator==(const from_chars_result&, const from_chars_result&) = default;
+
+// [charconv.syn]/2
+// The types to_chars_result and from_chars_result have the data members and
+// special members specified above. They have no base classes or members other
+// than those specified.
+
+#include <charconv>
+
+#include <cassert>
+#include <compare>
+#include <concepts>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  std::from_chars_result lhs{nullptr, std::errc{}};
+#if TEST_STD_VER > 17
+  std::from_chars_result rhs{nullptr, std::errc{}};
+  assert(lhs == rhs);
+  assert(!(lhs != rhs));
+#endif
+  auto [ptr, ec] = lhs;
+  static_assert(std::is_same_v<decltype(ptr), const char*>);
+  assert(ptr == lhs.ptr);
+  static_assert(std::is_same_v<decltype(ec), std::errc>);
+  assert(ec == lhs.ec);
+
+  return true;
+}
+
+int main(int, char**) {
+#if TEST_STD_VER > 17
+  static_assert(std::equality_comparable<std::from_chars_result>);
+  static_assert(!std::totally_ordered<std::from_chars_result>);
+  static_assert(!std::three_way_comparable<std::from_chars_result>);
+#endif
+
+  assert(test());
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/to_chars_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/to_chars_result.pass.cpp
new file mode 100644
index 0000000..d4436d0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.syn/to_chars_result.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <charconv>
+
+// struct to_chars_result
+//   friend bool operator==(const to_chars_result&, const to_chars_result&) = default;
+
+// [charconv.syn]/2
+// The types to_chars_result and from_chars_result have the data members and
+// special members specified above. They have no base classes or members other
+// than those specified.
+
+#include <charconv>
+
+#include <cassert>
+#include <compare>
+#include <concepts>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  std::to_chars_result lhs{nullptr, std::errc{}};
+#if TEST_STD_VER > 17
+  std::to_chars_result rhs{nullptr, std::errc{}};
+  assert(lhs == rhs);
+  assert(!(lhs != rhs));
+#endif
+  auto [ptr, ec] = lhs;
+  static_assert(std::is_same_v<decltype(ptr), char*>);
+  assert(ptr == lhs.ptr);
+  static_assert(std::is_same_v<decltype(ec), std::errc>);
+  assert(ec == lhs.ec);
+
+  return true;
+}
+
+int main(int, char**) {
+#if TEST_STD_VER > 17
+  static_assert(std::equality_comparable<std::to_chars_result>);
+  static_assert(!std::totally_ordered<std::to_chars_result>);
+  static_assert(!std::three_way_comparable<std::to_chars_result>);
+#endif
+
+  assert(test());
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.to.chars/integral.bool.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.to.chars/integral.bool.fail.cpp
new file mode 100644
index 0000000..630799b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.to.chars/integral.bool.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <charconv>
+
+// In
+//
+// to_chars_result to_chars(char* first, char* last, Integral value,
+//                          int base = 10)
+//
+// Integral cannot be bool.
+
+#include <charconv>
+
+int main(int, char**)
+{
+    using std::to_chars;
+    char buf[10];
+    bool lv = true;
+
+    to_chars(buf, buf + sizeof(buf), false);   // expected-error {{call to deleted function}}
+    to_chars(buf, buf + sizeof(buf), lv, 16);  // expected-error {{call to deleted function}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.to.chars/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.to.chars/integral.pass.cpp
new file mode 100644
index 0000000..4bdb8ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/charconv/charconv.to.chars/integral.pass.cpp
@@ -0,0 +1,310 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=12712420
+// ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-ops-limit): -fconstexpr-ops-limit=50000000
+
+// <charconv>
+
+// constexpr to_chars_result to_chars(char* first, char* last, Integral value,
+//                                    int base = 10)
+
+#include <charconv>
+#include "test_macros.h"
+#include "charconv_test_helpers.h"
+
+#ifndef TEST_HAS_NO_INT128
+TEST_CONSTEXPR_CXX23 __uint128_t make_u128(__uint128_t a, uint64_t b) {
+  a *= 1000000000000000000UL;
+  a *= 10;
+  return a + b;
+}
+
+TEST_CONSTEXPR_CXX23 __uint128_t make_u128(__uint128_t a, uint64_t b, uint64_t c) {
+  a *= 10000000000000ULL;
+  a += b;
+  a *= 10000000000000ULL;
+  return a + c;
+}
+
+TEST_CONSTEXPR_CXX23 __int128_t make_i128(__int128_t a, int64_t b) {
+  if (a < 0)
+    return -make_u128(-a, b);
+  return make_u128(a, b);
+}
+
+TEST_CONSTEXPR_CXX23 __int128_t make_i128(__int128_t a, __int128_t b, int64_t c) {
+  if (a < 0)
+    return -make_u128(-a, b, c);
+  return make_u128(a, b, c);
+}
+#endif
+
+template <typename T>
+struct test_basics : to_chars_test_base<T>
+{
+    using to_chars_test_base<T>::test;
+    using to_chars_test_base<T>::test_value;
+
+    TEST_CONSTEXPR_CXX23 void operator()()
+    {
+        test(0, "0");
+        test(42, "42");
+        test(32768, "32768");
+        test(0, "0", 10);
+        test(42, "42", 10);
+        test(32768, "32768", 10);
+        test(0xf, "f", 16);
+        test(0xdeadbeaf, "deadbeaf", 16);
+        test(0755, "755", 8);
+
+        // Test each len till len of UINT64_MAX = 20 because to_chars algorithm
+        // makes branches based on decimal digits count in the value string
+        // representation.
+        // Test driver automatically skips values not fitting into source type.
+        test(1UL, "1");
+        test(12UL, "12");
+        test(123UL, "123");
+        test(1234UL, "1234");
+        test(12345UL, "12345");
+        test(123456UL, "123456");
+        test(1234567UL, "1234567");
+        test(12345678UL, "12345678");
+        test(123456789UL, "123456789");
+        test(1234567890UL, "1234567890");
+        test(12345678901UL, "12345678901");
+        test(123456789012UL, "123456789012");
+        test(1234567890123UL, "1234567890123");
+        test(12345678901234UL, "12345678901234");
+        test(123456789012345UL, "123456789012345");
+        test(1234567890123456UL, "1234567890123456");
+        test(12345678901234567UL, "12345678901234567");
+        test(123456789012345678UL, "123456789012345678");
+        test(1234567890123456789UL, "1234567890123456789");
+        test(12345678901234567890UL, "12345678901234567890");
+#ifndef TEST_HAS_NO_INT128
+        test(make_u128(12UL, 3456789012345678901UL), "123456789012345678901");
+        test(make_u128(123UL, 4567890123456789012UL), "1234567890123456789012");
+        test(make_u128(1234UL, 5678901234567890123UL), "12345678901234567890123");
+        test(make_u128(12345UL, 6789012345678901234UL), "123456789012345678901234");
+        test(make_u128(123456UL, 7890123456789012345UL), "1234567890123456789012345");
+        test(make_u128(1234567UL, 8901234567890123456UL), "12345678901234567890123456");
+        test(make_u128(12345678UL, 9012345678901234567UL), "123456789012345678901234567");
+        test(make_u128(123456789UL, 123456789012345678UL), "1234567890123456789012345678");
+        test(make_u128(123UL, 4567890123456UL, 7890123456789UL), "12345678901234567890123456789");
+        test(make_u128(1234UL, 5678901234567UL, 8901234567890UL), "123456789012345678901234567890");
+        test(make_u128(12345UL, 6789012345678UL, 9012345678901UL), "1234567890123456789012345678901");
+        test(make_u128(123456UL, 7890123456789UL, 123456789012UL), "12345678901234567890123456789012");
+        test(make_u128(1234567UL, 8901234567890UL, 1234567890123UL), "123456789012345678901234567890123");
+        test(make_u128(12345678UL, 9012345678901UL, 2345678901234UL), "1234567890123456789012345678901234");
+        test(make_u128(123456789UL, 123456789012UL, 3456789012345UL), "12345678901234567890123456789012345");
+        test(make_u128(1234567890UL, 1234567890123UL, 4567890123456UL), "123456789012345678901234567890123456");
+        test(make_u128(12345678901UL, 2345678901234UL, 5678901234567UL), "1234567890123456789012345678901234567");
+        test(make_u128(123456789012UL, 3456789012345UL, 6789012345678UL), "12345678901234567890123456789012345678");
+        test(make_u128(1234567890123UL, 4567890123456UL, 7890123456789UL), "123456789012345678901234567890123456789");
+#endif
+
+        // Test special cases with zeros inside a value string representation,
+        // to_chars algorithm processes them in a special way and should not
+        // skip trailing zeros
+        // Test driver automatically skips values not fitting into source type.
+        test(0UL, "0");
+        test(10UL, "10");
+        test(100UL, "100");
+        test(1000UL, "1000");
+        test(10000UL, "10000");
+        test(100000UL, "100000");
+        test(1000000UL, "1000000");
+        test(10000000UL, "10000000");
+        test(100000000UL, "100000000");
+        test(1000000000UL, "1000000000");
+        test(10000000000UL, "10000000000");
+        test(100000000000UL, "100000000000");
+        test(1000000000000UL, "1000000000000");
+        test(10000000000000UL, "10000000000000");
+        test(100000000000000UL, "100000000000000");
+        test(1000000000000000UL, "1000000000000000");
+        test(10000000000000000UL, "10000000000000000");
+        test(100000000000000000UL, "100000000000000000");
+        test(1000000000000000000UL, "1000000000000000000");
+        test(10000000000000000000UL, "10000000000000000000");
+#ifndef TEST_HAS_NO_INT128
+        test(make_u128(10UL, 0), "100000000000000000000");
+        test(make_u128(100UL, 0), "1000000000000000000000");
+        test(make_u128(1000UL, 0), "10000000000000000000000");
+        test(make_u128(10000UL, 0), "100000000000000000000000");
+        test(make_u128(100000UL, 0), "1000000000000000000000000");
+        test(make_u128(1000000UL, 0), "10000000000000000000000000");
+        test(make_u128(10000000UL, 0), "100000000000000000000000000");
+        test(make_u128(100000000UL, 0), "1000000000000000000000000000");
+        test(make_u128(100UL, 0, 0), "10000000000000000000000000000");
+        test(make_u128(1000UL, 0, 0), "100000000000000000000000000000");
+        test(make_u128(10000UL, 0, 0), "1000000000000000000000000000000");
+        test(make_u128(100000UL, 0, 0), "10000000000000000000000000000000");
+        test(make_u128(1000000UL, 0, 0), "100000000000000000000000000000000");
+        test(make_u128(10000000UL, 0, 0), "1000000000000000000000000000000000");
+        test(make_u128(100000000UL, 0, 0), "10000000000000000000000000000000000");
+        test(make_u128(1000000000UL, 0, 0), "100000000000000000000000000000000000");
+        test(make_u128(10000000000UL, 0, 0), "1000000000000000000000000000000000000");
+        test(make_u128(100000000000UL, 0, 0), "10000000000000000000000000000000000000");
+        test(make_u128(1000000000000UL, 0, 0), "100000000000000000000000000000000000000");
+#endif
+
+        for (int b = 2; b < 37; ++b)
+        {
+            using xl = std::numeric_limits<T>;
+
+            test_value(1, b);
+            test_value(xl::lowest(), b);
+            test_value((xl::max)(), b);
+            test_value((xl::max)() / 2, b);
+        }
+    }
+};
+
+template <typename T>
+struct test_signed : to_chars_test_base<T>
+{
+    using to_chars_test_base<T>::test;
+    using to_chars_test_base<T>::test_value;
+
+    TEST_CONSTEXPR_CXX23 void operator()()
+    {
+        test(-1, "-1");
+        test(-12, "-12");
+        test(-1, "-1", 10);
+        test(-12, "-12", 10);
+        test(-21734634, "-21734634", 10);
+        test(-2647, "-101001010111", 2);
+        test(-0xcc1, "-cc1", 16);
+
+        // Test each len till len of INT64_MAX = 19 because to_chars algorithm
+        // makes branches based on decimal digits count in the value string
+        // representation.
+        // Test driver automatically skips values not fitting into source type.
+        test(-1L, "-1");
+        test(-12L, "-12");
+        test(-123L, "-123");
+        test(-1234L, "-1234");
+        test(-12345L, "-12345");
+        test(-123456L, "-123456");
+        test(-1234567L, "-1234567");
+        test(-12345678L, "-12345678");
+        test(-123456789L, "-123456789");
+        test(-1234567890L, "-1234567890");
+        test(-12345678901L, "-12345678901");
+        test(-123456789012L, "-123456789012");
+        test(-1234567890123L, "-1234567890123");
+        test(-12345678901234L, "-12345678901234");
+        test(-123456789012345L, "-123456789012345");
+        test(-1234567890123456L, "-1234567890123456");
+        test(-12345678901234567L, "-12345678901234567");
+        test(-123456789012345678L, "-123456789012345678");
+        test(-1234567890123456789L, "-1234567890123456789");
+#ifndef TEST_HAS_NO_INT128
+        test(make_i128(-1L, 2345678901234567890L), "-12345678901234567890");
+        test(make_i128(-12L, 3456789012345678901L), "-123456789012345678901");
+        test(make_i128(-123L, 4567890123456789012L), "-1234567890123456789012");
+        test(make_i128(-1234L, 5678901234567890123L), "-12345678901234567890123");
+        test(make_i128(-12345L, 6789012345678901234L), "-123456789012345678901234");
+        test(make_i128(-123456L, 7890123456789012345L), "-1234567890123456789012345");
+        test(make_i128(-1234567L, 8901234567890123456L), "-12345678901234567890123456");
+        test(make_i128(-12345678L, 9012345678901234567L), "-123456789012345678901234567");
+        test(make_i128(-123456789L, 123456789012345678L), "-1234567890123456789012345678");
+        test(make_i128(-1234567890L, 1234567890123456789L), "-12345678901234567890123456789");
+        test(make_i128(-123L, 4567890123456L, 7890123456789L), "-12345678901234567890123456789");
+        test(make_i128(-1234L, 5678901234567L, 8901234567890L), "-123456789012345678901234567890");
+        test(make_i128(-12345L, 6789012345678L, 9012345678901L), "-1234567890123456789012345678901");
+        test(make_i128(-123456L, 7890123456789L, 123456789012L), "-12345678901234567890123456789012");
+        test(make_i128(-1234567L, 8901234567890L, 1234567890123L), "-123456789012345678901234567890123");
+        test(make_i128(-12345678L, 9012345678901L, 2345678901234L), "-1234567890123456789012345678901234");
+        test(make_i128(-123456789L, 123456789012L, 3456789012345L), "-12345678901234567890123456789012345");
+        test(make_i128(-1234567890L, 1234567890123L, 4567890123456L), "-123456789012345678901234567890123456");
+        test(make_i128(-12345678901L, 2345678901234L, 5678901234567L), "-1234567890123456789012345678901234567");
+        test(make_i128(-123456789012L, 3456789012345L, 6789012345678L), "-12345678901234567890123456789012345678");
+        test(make_i128(-1234567890123L, 4567890123456L, 7890123456789L), "-123456789012345678901234567890123456789");
+#endif
+
+        // Test special cases with zeros inside a value string representation,
+        // to_chars algorithm processes them in a special way and should not
+        // skip trailing zeros
+        // Test driver automatically skips values not fitting into source type.
+        test(-10L, "-10");
+        test(-100L, "-100");
+        test(-1000L, "-1000");
+        test(-10000L, "-10000");
+        test(-100000L, "-100000");
+        test(-1000000L, "-1000000");
+        test(-10000000L, "-10000000");
+        test(-100000000L, "-100000000");
+        test(-1000000000L, "-1000000000");
+        test(-10000000000L, "-10000000000");
+        test(-100000000000L, "-100000000000");
+        test(-1000000000000L, "-1000000000000");
+        test(-10000000000000L, "-10000000000000");
+        test(-100000000000000L, "-100000000000000");
+        test(-1000000000000000L, "-1000000000000000");
+        test(-10000000000000000L, "-10000000000000000");
+        test(-100000000000000000L, "-100000000000000000");
+        test(-1000000000000000000L, "-1000000000000000000");
+#ifndef TEST_HAS_NO_INT128
+        test(make_i128(-1L, 0L), "-10000000000000000000");
+        test(make_i128(-10L, 0L), "-100000000000000000000");
+        test(make_i128(-100L, 0L), "-1000000000000000000000");
+        test(make_i128(-1000L, 0L), "-10000000000000000000000");
+        test(make_i128(-10000L, 0L), "-100000000000000000000000");
+        test(make_i128(-100000L, 0L), "-1000000000000000000000000");
+        test(make_i128(-1000000L, 0L), "-10000000000000000000000000");
+        test(make_i128(-10000000L, 0L), "-100000000000000000000000000");
+        test(make_i128(-100000000L, 0L), "-1000000000000000000000000000");
+        test(make_i128(-1000000000L, 0L), "-10000000000000000000000000000");
+        test(make_i128(-100L, 0L, 0L), "-10000000000000000000000000000");
+        test(make_i128(-1000L, 0L, 0L), "-100000000000000000000000000000");
+        test(make_i128(-10000L, 0L, 0L), "-1000000000000000000000000000000");
+        test(make_i128(-100000L, 0L, 0L), "-10000000000000000000000000000000");
+        test(make_i128(-1000000L, 0L, 0L), "-100000000000000000000000000000000");
+        test(make_i128(-10000000L, 0L, 0L), "-1000000000000000000000000000000000");
+        test(make_i128(-100000000L, 0L, 0L), "-10000000000000000000000000000000000");
+        test(make_i128(-1000000000L, 0L, 0L), "-100000000000000000000000000000000000");
+        test(make_i128(-10000000000L, 0L, 0L), "-1000000000000000000000000000000000000");
+        test(make_i128(-100000000000L, 0L, 0L), "-10000000000000000000000000000000000000");
+        test(make_i128(-1000000000000L, 0L, 0L), "-100000000000000000000000000000000000000");
+#endif
+
+        for (int b = 2; b < 37; ++b)
+        {
+            using xl = std::numeric_limits<T>;
+
+            test_value(0, b);
+            test_value(xl::lowest(), b);
+            test_value((xl::max)(), b);
+        }
+    }
+};
+
+TEST_CONSTEXPR_CXX23 bool test()
+{
+    run<test_basics>(integrals);
+    run<test_signed>(all_signed);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 20
+    static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/ctor.error.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/ctor.error.pass.cpp
new file mode 100644
index 0000000..67a91b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/ctor.error.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// explicit bad_expected_access(E e);
+
+// Effects: Initializes unex with std::move(e).
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+// test explicit
+static_assert(std::convertible_to<int, int>);
+static_assert(!std::convertible_to<int, std::bad_expected_access<int>>);
+
+int main(int, char**) {
+  std::bad_expected_access<MoveOnly> b(MoveOnly{3});
+  assert(b.error().get() == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/error.member.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/error.member.pass.cpp
new file mode 100644
index 0000000..4e1e2ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/error.member.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// E& error() & noexcept;
+// const E& error() const & noexcept;
+// E&& error() && noexcept;
+// const E&& error() const && noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+template <class T>
+concept ErrorNoexcept =
+    requires(T&& t) {
+      { std::forward<T>(t).error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+static_assert(ErrorNoexcept<std::bad_expected_access<int>&>);
+static_assert(ErrorNoexcept<std::bad_expected_access<int> const&>);
+static_assert(ErrorNoexcept<std::bad_expected_access<int>&&>);
+static_assert(ErrorNoexcept<std::bad_expected_access<int> const&&>);
+
+void test() {
+  // &
+  {
+    std::bad_expected_access<int> e(5);
+    decltype(auto) i = e.error();
+    static_assert(std::same_as<decltype(i), int&>);
+    assert(i == 5);
+  }
+
+  // const &
+  {
+    const std::bad_expected_access<int> e(5);
+    decltype(auto) i = e.error();
+    static_assert(std::same_as<decltype(i), const int&>);
+    assert(i == 5);
+  }
+
+  // &&
+  {
+    std::bad_expected_access<int> e(5);
+    decltype(auto) i = std::move(e).error();
+    static_assert(std::same_as<decltype(i), int&&>);
+    assert(i == 5);
+  }
+
+  // const &&
+  {
+    const std::bad_expected_access<int> e(5);
+    decltype(auto) i = std::move(e).error();
+    static_assert(std::same_as<decltype(i), const int&&>);
+    assert(i == 5);
+  }
+}
+
+int main(int, char**) {
+  test();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/what.noexcept.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/what.noexcept.compile.pass.cpp
new file mode 100644
index 0000000..e6d050b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.bad/what.noexcept.compile.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// const char* what() const noexcept override;
+
+#include <expected>
+#include <utility>
+
+template <class T>
+concept WhatNoexcept =
+    requires(const T& t) {
+      { t.what() } noexcept;
+    };
+
+struct foo{};
+
+static_assert(!WhatNoexcept<foo>);
+static_assert(WhatNoexcept<std::bad_expected_access<int>>);
+static_assert(WhatNoexcept<std::bad_expected_access<foo>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.U.pass.cpp
new file mode 100644
index 0000000..0912250
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.U.pass.cpp
@@ -0,0 +1,338 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+//  template<class U = T>
+//   constexpr expected& operator=(U&& v);
+//
+// Constraints:
+// - is_same_v<expected, remove_cvref_t<U>> is false; and
+// - remove_cvref_t<U> is not a specialization of unexpected; and
+// - is_constructible_v<T, U> is true; and
+// - is_assignable_v<T&, U> is true; and
+// - is_nothrow_constructible_v<T, U> || is_nothrow_move_constructible_v<T> ||
+//   is_nothrow_move_constructible_v<E> is true.
+//
+// Effects:
+// - If has_value() is true, equivalent to: val = std::forward<U>(v);
+// - Otherwise, equivalent to:
+//   reinit-expected(val, unex, std::forward<U>(v));
+//   has_val = true;
+// - Returns: *this.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotCopyConstructible {
+  NotCopyConstructible(const NotCopyConstructible&)            = delete;
+  NotCopyConstructible& operator=(const NotCopyConstructible&) = default;
+};
+
+struct NotCopyAssignable {
+  NotCopyAssignable(const NotCopyAssignable&)            = default;
+  NotCopyAssignable& operator=(const NotCopyAssignable&) = delete;
+};
+
+// Test constraints
+static_assert(std::is_assignable_v<std::expected<int, int>&, int>);
+
+// is_same_v<expected, remove_cvref_t<U>>
+// it is true because it covered by the copy assignment
+static_assert(std::is_assignable_v<std::expected<int, int>&, std::expected<int, int>>);
+
+// remove_cvref_t<U> is a specialization of unexpected
+// it is true because it covered the unepxected overload
+static_assert(std::is_assignable_v<std::expected<int, int>&, std::unexpected<int>>);
+
+// !is_constructible_v<T, U>
+struct NoCtorFromInt {
+  NoCtorFromInt(int) = delete;
+  NoCtorFromInt& operator=(int);
+};
+static_assert(!std::is_assignable_v<std::expected<NoCtorFromInt, int>&, int>);
+
+// !is_assignable_v<T&, U>
+struct NoAssignFromInt {
+  explicit NoAssignFromInt(int);
+  NoAssignFromInt& operator=(int) = delete;
+};
+static_assert(!std::is_assignable_v<std::expected<NoAssignFromInt, int>&, int>);
+
+template <bool moveNoexcept, bool convertNoexcept>
+struct MaybeNoexcept {
+  explicit MaybeNoexcept(int) noexcept(convertNoexcept);
+  MaybeNoexcept(MaybeNoexcept&&) noexcept(moveNoexcept);
+  MaybeNoexcept& operator=(MaybeNoexcept&&) = default;
+  MaybeNoexcept& operator=(int);
+};
+
+// !is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+// is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, int>&, int>);
+
+// is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, true>, MaybeNoexcept<false, false>>&, int>);
+
+// !is_nothrow_constructible_v<T, U> && is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<true, false>, MaybeNoexcept<false, false>>&, int>);
+
+// !is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, false>>&, int>);
+
+constexpr bool test() {
+  // If has_value() is true, equivalent to: val = std::forward<U>(v);
+  // Copy
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<Traced, int> e1(std::in_place, oldState, 5);
+    Traced u(newState, 10);
+    decltype(auto) x = (e1 = u);
+    static_assert(std::same_as<decltype(x), std::expected<Traced, int>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+    assert(oldState.copyAssignCalled);
+  }
+
+  // If has_value() is true, equivalent to: val = std::forward<U>(v);
+  // Move
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<Traced, int> e1(std::in_place, oldState, 5);
+    Traced u(newState, 10);
+    decltype(auto) x = (e1 = std::move(u));
+    static_assert(std::same_as<decltype(x), std::expected<Traced, int>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+    assert(oldState.moveAssignCalled);
+  }
+
+  // Otherwise, equivalent to:
+  //   reinit-expected(val, unex, std::forward<U>(v));
+  // is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+  // !is_nothrow_move_constructible_v<E>
+  // copy
+  //
+  //  In this case, it should call the branch
+  //    destroy_at(addressof(oldval));
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  {
+    BothMayThrow::state oldState{};
+    std::expected<MoveThrowConvNoexcept, BothMayThrow> e1(std::unexpect, oldState, 5);
+    const int i      = 10;
+    decltype(auto) x = (e1 = i);
+    static_assert(std::same_as<decltype(x), std::expected<MoveThrowConvNoexcept, BothMayThrow>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyCtorCalled);
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e1.value().copiedFromInt);
+  }
+
+  // Otherwise, equivalent to:
+  //   reinit-expected(val, unex, std::forward<U>(v));
+  // is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+  // !is_nothrow_move_constructible_v<E>
+  // move
+  //
+  //  In this case, it should call the branch
+  //    destroy_at(addressof(oldval));
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  {
+    BothMayThrow::state oldState{};
+    std::expected<MoveThrowConvNoexcept, BothMayThrow> e1(std::unexpect, oldState, 5);
+    decltype(auto) x = (e1 = 10);
+    static_assert(std::same_as<decltype(x), std::expected<MoveThrowConvNoexcept, BothMayThrow>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyCtorCalled);
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e1.value().movedFromInt);
+  }
+
+  // Otherwise, equivalent to:
+  //   reinit-expected(val, unex, std::forward<U>(v));
+  // !is_nothrow_constructible_v<T, U> && is_nothrow_move_constructible_v<T> &&
+  // !is_nothrow_move_constructible_v<E>
+  // copy
+  //
+  //  In this case, it should call the branch
+  //  T tmp(std::forward<Args>(args)...);
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::move(tmp));
+  {
+    BothMayThrow::state oldState{};
+    std::expected<MoveNoexceptConvThrow, BothMayThrow> e1(std::unexpect, oldState, 5);
+    const int i      = 10;
+    decltype(auto) x = (e1 = i);
+    static_assert(std::same_as<decltype(x), std::expected<MoveNoexceptConvThrow, BothMayThrow>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyCtorCalled);
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!e1.value().copiedFromInt);
+    assert(e1.value().movedFromTmp);
+  }
+
+  // Otherwise, equivalent to:
+  //   reinit-expected(val, unex, std::forward<U>(v));
+  // !is_nothrow_constructible_v<T, U> && is_nothrow_move_constructible_v<T> &&
+  // !is_nothrow_move_constructible_v<E>
+  // move
+  //
+  //  In this case, it should call the branch
+  //  T tmp(std::forward<Args>(args)...);
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::move(tmp));
+  {
+    BothMayThrow::state oldState{};
+    std::expected<MoveNoexceptConvThrow, BothMayThrow> e1(std::unexpect, oldState, 5);
+    decltype(auto) x = (e1 = 10);
+    static_assert(std::same_as<decltype(x), std::expected<MoveNoexceptConvThrow, BothMayThrow>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyCtorCalled);
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!e1.value().copiedFromInt);
+    assert(e1.value().movedFromTmp);
+  }
+
+  // Otherwise, equivalent to:
+  //   reinit-expected(val, unex, std::forward<U>(v));
+  // !is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+  // is_nothrow_move_constructible_v<E>
+  // copy
+  //
+  //  In this case, it should call the branch
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  {
+    TracedNoexcept::state oldState{};
+    std::expected<BothMayThrow, TracedNoexcept> e1(std::unexpect, oldState, 5);
+    const int i      = 10;
+    decltype(auto) x = (e1 = i);
+    static_assert(std::same_as<decltype(x), std::expected<BothMayThrow, TracedNoexcept>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyCtorCalled);
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e1.value().copiedFromInt);
+  }
+
+  // Otherwise, equivalent to:
+  //   reinit-expected(val, unex, std::forward<U>(v));
+  // !is_nothrow_constructible_v<T, U> && !is_nothrow_move_constructible_v<T> &&
+  // is_nothrow_move_constructible_v<E>
+  // move
+  //
+  //  In this case, it should call the branch
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  {
+    TracedNoexcept::state oldState{};
+    std::expected<BothMayThrow, TracedNoexcept> e1(std::unexpect, oldState, 5);
+    decltype(auto) x = (e1 = 10);
+    static_assert(std::same_as<decltype(x), std::expected<BothMayThrow, TracedNoexcept>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyCtorCalled);
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e1.value().movedFromInt);
+  }
+
+  // Test default template argument.
+  // Without it, the template parameter cannot be deduced from an initializer list
+  {
+    struct Bar {
+      int i;
+      int j;
+      constexpr Bar(int ii, int jj) : i(ii), j(jj) {}
+    };
+
+    std::expected<Bar, int> e({5, 6});
+    e = {7, 8};
+    assert(e.value().i == 7);
+    assert(e.value().j == 8);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<ThrowOnConvert, int> e1(std::unexpect, 5);
+  try {
+    e1 = 10;
+    assert(false);
+  } catch (Except) {
+    assert(!e1.has_value());
+    assert(e1.error() == 5);
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp
new file mode 100644
index 0000000..d4496ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.copy.pass.cpp
@@ -0,0 +1,291 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr expected& operator=(const expected& rhs);
+//
+// Effects:
+// - If this->has_value() && rhs.has_value() is true, equivalent to val = *rhs.
+// - Otherwise, if this->has_value() is true, equivalent to:
+//  reinit-expected(unex, val, rhs.error())
+// - Otherwise, if rhs.has_value() is true, equivalent to:
+//  reinit-expected(val, unex, *rhs)
+// - Otherwise, equivalent to unex = rhs.error().
+//
+// - Then, if no exception was thrown, equivalent to: has_val = rhs.has_value(); return *this;
+//
+// Returns: *this.
+//
+// Remarks: This operator is defined as deleted unless:
+// - is_copy_assignable_v<T> is true and
+// - is_copy_constructible_v<T> is true and
+// - is_copy_assignable_v<E> is true and
+// - is_copy_constructible_v<E> is true and
+// - is_nothrow_move_constructible_v<T> || is_nothrow_move_constructible_v<E> is true.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotCopyConstructible {
+  NotCopyConstructible(const NotCopyConstructible&)            = delete;
+  NotCopyConstructible& operator=(const NotCopyConstructible&) = default;
+};
+
+struct NotCopyAssignable {
+  NotCopyAssignable(const NotCopyAssignable&)            = default;
+  NotCopyAssignable& operator=(const NotCopyAssignable&) = delete;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow const&)            = default;
+  MoveMayThrow& operator=(const MoveMayThrow&) = default;
+  MoveMayThrow(MoveMayThrow&&) noexcept(false) {}
+  MoveMayThrow& operator=(MoveMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test constraints
+static_assert(std::is_copy_assignable_v<std::expected<int, int>>);
+
+// !is_copy_assignable_v<T>
+static_assert(!std::is_copy_assignable_v<std::expected<NotCopyAssignable, int>>);
+
+// !is_copy_constructible_v<T>
+static_assert(!std::is_copy_assignable_v<std::expected<NotCopyConstructible, int>>);
+
+// !is_copy_assignable_v<E>
+static_assert(!std::is_copy_assignable_v<std::expected<int, NotCopyAssignable>>);
+
+// !is_copy_constructible_v<E>
+static_assert(!std::is_copy_assignable_v<std::expected<int, NotCopyConstructible>>);
+
+// !is_nothrow_move_constructible_v<T> && is_nothrow_move_constructible_v<E>
+static_assert(std::is_copy_assignable_v<std::expected<MoveMayThrow, int>>);
+
+// is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(std::is_copy_assignable_v<std::expected<int, MoveMayThrow>>);
+
+// !is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_copy_assignable_v<std::expected<MoveMayThrow, MoveMayThrow>>);
+
+constexpr bool test() {
+  // If this->has_value() && rhs.has_value() is true, equivalent to val = *rhs.
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<Traced, int> e1(std::in_place, oldState, 5);
+    const std::expected<Traced, int> e2(std::in_place, newState, 10);
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<Traced, int>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+    assert(oldState.copyAssignCalled);
+  }
+
+  // - Otherwise, if this->has_value() is true, equivalent to:
+  // reinit-expected(unex, val, rhs.error())
+  //  E move is not noexcept
+  //  In this case, it should call the branch
+  //
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  //
+  {
+    TracedNoexcept::state oldState{};
+    Traced::state newState{};
+    std::expected<TracedNoexcept, Traced> e1(std::in_place, oldState, 5);
+    const std::expected<TracedNoexcept, Traced> e2(std::unexpect, newState, 10);
+
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<TracedNoexcept, Traced>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+
+    assert(!oldState.copyAssignCalled);
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(newState.copyCtorCalled);
+    assert(!newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // - Otherwise, if this->has_value() is true, equivalent to:
+  // reinit-expected(unex, val, rhs.error())
+  //  E move is noexcept
+  //  In this case, it should call the branch
+  //
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::forward<Args>(args)...);
+  //
+  {
+    Traced::state oldState{};
+    TracedNoexcept::state newState{};
+    std::expected<Traced, TracedNoexcept> e1(std::in_place, oldState, 5);
+    const std::expected<Traced, TracedNoexcept> e2(std::unexpect, newState, 10);
+
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<Traced, TracedNoexcept>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+
+    assert(!oldState.copyAssignCalled);
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(newState.copyCtorCalled);
+    assert(!newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // - Otherwise, if rhs.has_value() is true, equivalent to:
+  // reinit-expected(val, unex, *rhs)
+  //  T move is not noexcept
+  //  In this case, it should call the branch
+  //
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  //
+  {
+    TracedNoexcept::state oldState{};
+    Traced::state newState{};
+    std::expected<Traced, TracedNoexcept> e1(std::unexpect, oldState, 5);
+    const std::expected<Traced, TracedNoexcept> e2(std::in_place, newState, 10);
+
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<Traced, TracedNoexcept>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyAssignCalled);
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(newState.copyCtorCalled);
+    assert(!newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // - Otherwise, if rhs.has_value() is true, equivalent to:
+  // reinit-expected(val, unex, *rhs)
+  //  T move is noexcept
+  //  In this case, it should call the branch
+  //
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::forward<Args>(args)...);
+  //
+  {
+    Traced::state oldState{};
+    TracedNoexcept::state newState{};
+    std::expected<TracedNoexcept, Traced> e1(std::unexpect, oldState, 5);
+    const std::expected<TracedNoexcept, Traced> e2(std::in_place, newState, 10);
+
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<TracedNoexcept, Traced>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.copyAssignCalled);
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(newState.copyCtorCalled);
+    assert(!newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // Otherwise, equivalent to unex = rhs.error().
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<int, Traced> e1(std::unexpect, oldState, 5);
+    const std::expected<int, Traced> e2(std::unexpect, newState, 10);
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<int, Traced>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(oldState.copyAssignCalled);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct ThrowOnCopyMoveMayThrow {
+    ThrowOnCopyMoveMayThrow() = default;
+    ThrowOnCopyMoveMayThrow(const ThrowOnCopyMoveMayThrow&) { throw Except{}; };
+    ThrowOnCopyMoveMayThrow& operator=(const ThrowOnCopyMoveMayThrow&) = default;
+    ThrowOnCopyMoveMayThrow(ThrowOnCopyMoveMayThrow&&) noexcept(false) {}
+  };
+
+  // assign value throw on copy
+  {
+    std::expected<ThrowOnCopyMoveMayThrow, int> e1(std::unexpect, 5);
+    const std::expected<ThrowOnCopyMoveMayThrow, int> e2(std::in_place);
+    try {
+      e1 = e2;
+      assert(false);
+    } catch (Except) {
+      assert(!e1.has_value());
+      assert(e1.error() == 5);
+    }
+  }
+
+  // assign error throw on copy
+  {
+    std::expected<int, ThrowOnCopyMoveMayThrow> e1(5);
+    const std::expected<int, ThrowOnCopyMoveMayThrow> e2(std::unexpect);
+    try {
+      e1 = e2;
+      assert(false);
+    } catch (Except) {
+      assert(e1.has_value());
+      assert(e1.value() == 5);
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp
new file mode 100644
index 0000000..b247ed3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.move.pass.cpp
@@ -0,0 +1,302 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr expected& operator=(expected&& rhs) noexcept(see below);
+//
+// Constraints:
+// - is_move_constructible_v<T> is true and
+// - is_move_assignable_v<T> is true and
+// - is_move_constructible_v<E> is true and
+// - is_move_assignable_v<E> is true and
+// - is_nothrow_move_constructible_v<T> || is_nothrow_move_constructible_v<E> is true.
+//
+// Effects:
+// - If this->has_value() && rhs.has_value() is true, equivalent to val = std::move(*rhs).
+// - Otherwise, if this->has_value() is true, equivalent to:
+//   reinit-expected(unex, val, std::move(rhs.error()))
+// - Otherwise, if rhs.has_value() is true, equivalent to:
+//   reinit-expected(val, unex, std::move(*rhs))
+// - Otherwise, equivalent to unex = std::move(rhs.error()).
+// - Then, if no exception was thrown, equivalent to: has_val = rhs.has_value(); return *this;
+//
+// Returns: *this.
+//
+// Remarks: The exception specification is equivalent to:
+// is_nothrow_move_assignable_v<T> && is_nothrow_move_constructible_v<T> &&
+// is_nothrow_move_assignable_v<E> && is_nothrow_move_constructible_v<E>
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotMoveConstructible {
+  NotMoveConstructible(NotMoveConstructible&&)            = delete;
+  NotMoveConstructible& operator=(NotMoveConstructible&&) = default;
+};
+
+struct NotMoveAssignable {
+  NotMoveAssignable(NotMoveAssignable&&)            = default;
+  NotMoveAssignable& operator=(NotMoveAssignable&&) = delete;
+};
+
+struct MoveCtorMayThrow {
+  MoveCtorMayThrow(MoveCtorMayThrow&&) noexcept(false) {}
+  MoveCtorMayThrow& operator=(MoveCtorMayThrow&&) noexcept = default;
+};
+
+// Test constraints
+static_assert(std::is_move_assignable_v<std::expected<int, int>>);
+
+// !is_move_assignable_v<T>
+static_assert(!std::is_move_assignable_v<std::expected<NotMoveAssignable, int>>);
+
+// !is_move_constructible_v<T>
+static_assert(!std::is_move_assignable_v<std::expected<NotMoveConstructible, int>>);
+
+// !is_move_assignable_v<E>
+static_assert(!std::is_move_assignable_v<std::expected<int, NotMoveAssignable>>);
+
+// !is_move_constructible_v<E>
+static_assert(!std::is_move_assignable_v<std::expected<int, NotMoveConstructible>>);
+
+// !is_nothrow_move_constructible_v<T> && is_nothrow_move_constructible_v<E>
+static_assert(std::is_move_assignable_v<std::expected<MoveCtorMayThrow, int>>);
+
+// is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(std::is_move_assignable_v<std::expected<int, MoveCtorMayThrow>>);
+
+// !is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_move_assignable_v<std::expected<MoveCtorMayThrow, MoveCtorMayThrow>>);
+
+struct MoveAssignMayThrow {
+  MoveAssignMayThrow(MoveAssignMayThrow&&) noexcept = default;
+  MoveAssignMayThrow& operator=(MoveAssignMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test noexcept
+static_assert(std::is_nothrow_move_assignable_v<std::expected<int, int>>);
+
+// !is_nothrow_move_assignable_v<T>
+static_assert(!std::is_nothrow_move_assignable_v<std::expected<MoveAssignMayThrow, int>>);
+
+// !is_nothrow_move_constructible_v<T>
+static_assert(!std::is_nothrow_move_assignable_v<std::expected<MoveCtorMayThrow, int>>);
+
+// !is_nothrow_move_assignable_v<E>
+static_assert(!std::is_nothrow_move_assignable_v<std::expected<int, MoveAssignMayThrow>>);
+
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_nothrow_move_assignable_v<std::expected<int, MoveCtorMayThrow>>);
+
+constexpr bool test() {
+  // If this->has_value() && rhs.has_value() is true, equivalent to val = std::move(*rhs).
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<Traced, int> e1(std::in_place, oldState, 5);
+    std::expected<Traced, int> e2(std::in_place, newState, 10);
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<Traced, int>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+    assert(oldState.moveAssignCalled);
+  }
+
+  // - Otherwise, if this->has_value() is true, equivalent to:
+  // reinit-expected(unex, val, rhs.error())
+  //  E move is not noexcept
+  //  In this case, it should call the branch
+  //
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  //
+  {
+    TracedNoexcept::state oldState{};
+    Traced::state newState{};
+    std::expected<TracedNoexcept, Traced> e1(std::in_place, oldState, 5);
+    std::expected<TracedNoexcept, Traced> e2(std::unexpect, newState, 10);
+
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<TracedNoexcept, Traced>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+
+    assert(!oldState.moveAssignCalled);
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(!newState.copyCtorCalled);
+    assert(newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // - Otherwise, if this->has_value() is true, equivalent to:
+  // reinit-expected(unex, val, rhs.error())
+  //  E move is noexcept
+  //  In this case, it should call the branch
+  //
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::forward<Args>(args)...);
+  //
+  {
+    Traced::state oldState{};
+    TracedNoexcept::state newState{};
+    std::expected<Traced, TracedNoexcept> e1(std::in_place, oldState, 5);
+    std::expected<Traced, TracedNoexcept> e2(std::unexpect, newState, 10);
+
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<Traced, TracedNoexcept>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(!newState.copyCtorCalled);
+    assert(newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // - Otherwise, if rhs.has_value() is true, equivalent to:
+  // reinit-expected(val, unex, *rhs)
+  //  T move is not noexcept
+  //  In this case, it should call the branch
+  //
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  //
+  {
+    TracedNoexcept::state oldState{};
+    Traced::state newState{};
+    std::expected<Traced, TracedNoexcept> e1(std::unexpect, oldState, 5);
+    std::expected<Traced, TracedNoexcept> e2(std::in_place, newState, 10);
+
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<Traced, TracedNoexcept>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(!newState.copyCtorCalled);
+    assert(newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // - Otherwise, if rhs.has_value() is true, equivalent to:
+  // reinit-expected(val, unex, *rhs)
+  //  T move is noexcept
+  //  In this case, it should call the branch
+  //
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::forward<Args>(args)...);
+  //
+  {
+    Traced::state oldState{};
+    TracedNoexcept::state newState{};
+    std::expected<TracedNoexcept, Traced> e1(std::unexpect, oldState, 5);
+    std::expected<TracedNoexcept, Traced> e2(std::in_place, newState, 10);
+
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<TracedNoexcept, Traced>&>);
+    assert(&x == &e1);
+
+    assert(e1.has_value());
+    assert(e1.value().data_ == 10);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!oldState.copyCtorCalled);
+    assert(!newState.copyCtorCalled);
+    assert(newState.moveCtorCalled);
+    assert(!newState.dtorCalled);
+  }
+
+  // Otherwise, equivalent to unex = rhs.error().
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<int, Traced> e1(std::unexpect, oldState, 5);
+    std::expected<int, Traced> e2(std::unexpect, newState, 10);
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<int, Traced>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(oldState.moveAssignCalled);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  // assign value throw on move
+  {
+    std::expected<ThrowOnMoveConstruct, int> e1(std::unexpect, 5);
+    std::expected<ThrowOnMoveConstruct, int> e2(std::in_place);
+    try {
+      e1 = std::move(e2);
+      assert(false);
+    } catch (Except) {
+      assert(!e1.has_value());
+      assert(e1.error() == 5);
+    }
+  }
+
+  // assign error throw on move
+  {
+    std::expected<int, ThrowOnMoveConstruct> e1(5);
+    std::expected<int, ThrowOnMoveConstruct> e2(std::unexpect);
+    try {
+      e1 = std::move(e2);
+      assert(false);
+    } catch (Except) {
+      assert(e1.has_value());
+      assert(*e1 == 5);
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp
new file mode 100644
index 0000000..a45dd45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.copy.pass.cpp
@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class G>
+//   constexpr expected& operator=(const unexpected<G>& e);
+//
+// Let GF be const G&
+// Constraints:
+// - is_constructible_v<E, GF> is true; and
+// - is_assignable_v<E&, GF> is true; and
+// - is_nothrow_constructible_v<E, GF> || is_nothrow_move_constructible_v<T> ||
+//   is_nothrow_move_constructible_v<E> is true.
+//
+// Effects:
+// - If has_value() is true, equivalent to:
+//   reinit-expected(unex, val, std::forward<GF>(e.error()));
+//   has_val = false;
+// - Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+// Returns: *this.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotCopyConstructible {
+  NotCopyConstructible(const NotCopyConstructible&)            = delete;
+  NotCopyConstructible& operator=(const NotCopyConstructible&) = default;
+};
+
+struct NotCopyAssignable {
+  NotCopyAssignable(const NotCopyAssignable&)            = default;
+  NotCopyAssignable& operator=(const NotCopyAssignable&) = delete;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow const&)            = default;
+  MoveMayThrow& operator=(const MoveMayThrow&) = default;
+  MoveMayThrow(MoveMayThrow&&) noexcept(false) {}
+  MoveMayThrow& operator=(MoveMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test constraints
+static_assert(std::is_assignable_v<std::expected<int, int>&, const std::unexpected<int>&>);
+
+// !is_constructible_v<E, GF>
+static_assert(
+    !std::is_assignable_v<std::expected<int, NotCopyConstructible>&, const std::unexpected<NotCopyConstructible>&>);
+
+// !is_assignable_v<E&, GF>
+static_assert(!std::is_assignable_v<std::expected<int, NotCopyAssignable>&, const std::unexpected<NotCopyAssignable>&>);
+
+template <bool moveNoexcept, bool convertNoexcept>
+struct MaybeNoexcept {
+  explicit MaybeNoexcept(int) noexcept(convertNoexcept);
+  MaybeNoexcept(MaybeNoexcept&&) noexcept(moveNoexcept);
+  MaybeNoexcept& operator=(MaybeNoexcept&&) = default;
+  MaybeNoexcept& operator=(int);
+};
+
+// !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<true, false>>&,
+                                   const std::unexpected<int>&>);
+
+// is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, true>>&,
+                                   const std::unexpected<int>&>);
+
+// !is_nothrow_constructible_v<E, GF> && is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<true, true>, MaybeNoexcept<false, false>>&,
+                                   const std::unexpected<int>&>);
+
+// !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, false>>&,
+                                    const std::unexpected<int>&>);
+
+constexpr bool test() {
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // is_nothrow_constructible_v<E, GF>
+  //
+  //  In this case, it should call the branch
+  //    destroy_at(addressof(oldval));
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, BothNoexcept> e(std::in_place, oldState, 5);
+    const std::unexpected<int> un(10);
+    decltype(auto) x = (e = un);
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, BothNoexcept>&>);
+    assert(&x == &e);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e.error().copiedFromInt);
+  }
+
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // !is_nothrow_constructible_v<E, GF> && is_nothrow_move_constructible_v<E>
+  //
+  //  In this case, it should call the branch
+  //  T tmp(std::forward<Args>(args)...);
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::move(tmp));
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, MoveNoexceptConvThrow> e(std::in_place, oldState, 5);
+    const std::unexpected<int> un(10);
+    decltype(auto) x = (e = un);
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, MoveNoexceptConvThrow>&>);
+    assert(&x == &e);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!e.error().copiedFromInt);
+    assert(e.error().movedFromTmp);
+  }
+
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<E>
+  // is_nothrow_move_constructible_v<T>
+  //
+  //  In this case, it should call the branch
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, BothMayThrow> e(std::in_place, oldState, 5);
+    const std::unexpected<int> un(10);
+    decltype(auto) x = (e = un);
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, BothMayThrow>&>);
+    assert(&x == &e);
+
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e.error().copiedFromInt);
+  }
+
+  // Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<int, Traced> e1(std::unexpect, oldState, 5);
+    const std::unexpected<Traced> e(std::in_place, newState, 10);
+    decltype(auto) x = (e1 = e);
+    static_assert(std::same_as<decltype(x), std::expected<int, Traced>&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(oldState.copyAssignCalled);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<int, ThrowOnConvert> e1(std::in_place, 5);
+  const std::unexpected<int> un(10);
+  try {
+    e1 = un;
+    assert(false);
+  } catch (Except) {
+    assert(e1.has_value());
+    assert(*e1 == 5);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp
new file mode 100644
index 0000000..cb56d30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/assign.unexpected.move.pass.cpp
@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class G>
+//   constexpr expected& operator=(unexpected<G>&& e);
+//
+// Let GF be G
+// Constraints:
+// - is_constructible_v<E, GF> is true; and
+// - is_assignable_v<E&, GF> is true; and
+// - is_nothrow_constructible_v<E, GF> || is_nothrow_move_constructible_v<T> ||
+//   is_nothrow_move_constructible_v<E> is true.
+//
+// Effects:
+// - If has_value() is true, equivalent to:
+//   reinit-expected(unex, val, std::forward<GF>(e.error()));
+//   has_val = false;
+// - Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+// Returns: *this.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotMoveConstructible {
+  NotMoveConstructible(NotMoveConstructible&&)            = delete;
+  NotMoveConstructible& operator=(NotMoveConstructible&&) = default;
+};
+
+struct NotMoveAssignable {
+  NotMoveAssignable(NotMoveAssignable&&)            = default;
+  NotMoveAssignable& operator=(NotMoveAssignable&&) = delete;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow const&)            = default;
+  MoveMayThrow& operator=(const MoveMayThrow&) = default;
+  MoveMayThrow(MoveMayThrow&&) noexcept(false) {}
+  MoveMayThrow& operator=(MoveMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test constraints
+static_assert(std::is_assignable_v<std::expected<int, int>&, std::unexpected<int>&&>);
+
+// !is_constructible_v<E, GF>
+static_assert(
+    !std::is_assignable_v<std::expected<int, NotMoveConstructible>&, std::unexpected<NotMoveConstructible>&&>);
+
+// !is_assignable_v<E&, GF>
+static_assert(!std::is_assignable_v<std::expected<int, NotMoveAssignable>&, std::unexpected<NotMoveAssignable>&&>);
+
+template <bool moveNoexcept, bool convertNoexcept>
+struct MaybeNoexcept {
+  explicit MaybeNoexcept(int) noexcept(convertNoexcept);
+  MaybeNoexcept(MaybeNoexcept&&) noexcept(moveNoexcept);
+  MaybeNoexcept& operator=(MaybeNoexcept&&) = default;
+  MaybeNoexcept& operator=(int);
+};
+
+// !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<true, false>>&,
+                                   std::unexpected<int>&&>);
+
+// is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, true>>&,
+                                   std::unexpected<int>&&>);
+
+// !is_nothrow_constructible_v<E, GF> && is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<true, true>, MaybeNoexcept<false, false>>&,
+                                   std::unexpected<int>&&>);
+
+// !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, false>>&,
+                                    std::unexpected<int>&&>);
+
+constexpr bool test() {
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // is_nothrow_constructible_v<E, GF>
+  //
+  //  In this case, it should call the branch
+  //    destroy_at(addressof(oldval));
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, BothNoexcept> e(std::in_place, oldState, 5);
+    std::unexpected<int> un(10);
+    decltype(auto) x = (e = std::move(un));
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, BothNoexcept>&>);
+    assert(&x == &e);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e.error().movedFromInt);
+  }
+
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // !is_nothrow_constructible_v<E, GF> && is_nothrow_move_constructible_v<E>
+  //
+  //  In this case, it should call the branch
+  //  T tmp(std::forward<Args>(args)...);
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::move(tmp));
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, MoveNoexceptConvThrow> e(std::in_place, oldState, 5);
+    std::unexpected<int> un(10);
+    decltype(auto) x = (e = std::move(un));
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, MoveNoexceptConvThrow>&>);
+    assert(&x == &e);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!e.error().movedFromInt);
+    assert(e.error().movedFromTmp);
+  }
+
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<E>
+  // is_nothrow_move_constructible_v<T>
+  //
+  //  In this case, it should call the branch
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, BothMayThrow> e(std::in_place, oldState, 5);
+    std::unexpected<int> un(10);
+    decltype(auto) x = (e = std::move(un));
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, BothMayThrow>&>);
+    assert(&x == &e);
+
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e.error().movedFromInt);
+  }
+
+  // Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<int, Traced> e1(std::unexpect, oldState, 5);
+    std::unexpected<Traced> e(std::in_place, newState, 10);
+    decltype(auto) x = (e1 = std::move(e));
+    static_assert(std::same_as<decltype(x), std::expected<int, Traced >&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(oldState.moveAssignCalled);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<int, ThrowOnConvert> e1(std::in_place, 5);
+  std::unexpected<int> un(10);
+  try {
+    e1 = std::move(un);
+    assert(false);
+  } catch (Except) {
+    assert(e1.has_value());
+    assert(*e1 == 5);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.intializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.intializer_list.pass.cpp
new file mode 100644
index 0000000..3cdfcde
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.intializer_list.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class U, class... Args>
+//   constexpr T& emplace(initializer_list<U> il, Args&&... args) noexcept;
+// Constraints: is_nothrow_constructible_v<T, initializer_list<U>&, Args...> is true.
+//
+// Effects: Equivalent to:
+// if (has_value()) {
+//   destroy_at(addressof(val));
+// } else {
+//   destroy_at(addressof(unex));
+//   has_val = true;
+// }
+// return *construct_at(addressof(val), il, std::forward<Args>(args)...);
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+template <class T, class... Args>
+concept CanEmplace = requires(T t, Args&&... args) { t.emplace(std::forward<Args>(args)...); };
+
+static_assert(CanEmplace<std::expected<int, int>, int>);
+
+template <bool Noexcept>
+struct CtorFromInitalizerList {
+  CtorFromInitalizerList(std::initializer_list<int>&) noexcept(Noexcept);
+  CtorFromInitalizerList(std::initializer_list<int>&, int) noexcept(Noexcept);
+};
+
+static_assert(CanEmplace<std::expected<CtorFromInitalizerList<true>, int>, std::initializer_list<int>&>);
+static_assert(!CanEmplace<std::expected<CtorFromInitalizerList<false>, int>, std::initializer_list<int>&>);
+static_assert(CanEmplace<std::expected<CtorFromInitalizerList<true>, int>, std::initializer_list<int>&, int>);
+static_assert(!CanEmplace<std::expected<CtorFromInitalizerList<false>, int>, std::initializer_list<int>&, int>);
+
+struct Data {
+  std::initializer_list<int> il;
+  int i;
+
+  constexpr Data(std::initializer_list<int>& l, int ii) noexcept : il(l), i(ii) {}
+};
+
+constexpr bool test() {
+  // has_value
+  {
+    auto list1 = {1, 2, 3};
+    auto list2 = {4, 5, 6};
+    std::expected<Data, int> e(std::in_place, list1, 5);
+    decltype(auto) x = e.emplace(list2, 10);
+    static_assert(std::same_as<decltype(x), Data&>);
+    assert(&x == &(*e));
+
+    assert(e.has_value());
+    assert(std::ranges::equal(e.value().il, list2));
+    assert(e.value().i == 10);
+  }
+
+  // !has_value
+  {
+    auto list = {4, 5, 6};
+    std::expected<Data, int> e(std::unexpect, 5);
+    decltype(auto) x = e.emplace(list, 10);
+    static_assert(std::same_as<decltype(x), Data&>);
+    assert(&x == &(*e));
+
+    assert(e.has_value());
+    assert(std::ranges::equal(e.value().il, list));
+    assert(e.value().i == 10);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp
new file mode 100644
index 0000000..66c066d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/assign/emplace.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class... Args>
+//   constexpr T& emplace(Args&&... args) noexcept;
+// Constraints: is_nothrow_constructible_v<T, Args...> is true.
+//
+// Effects: Equivalent to:
+// if (has_value()) {
+//   destroy_at(addressof(val));
+// } else {
+//   destroy_at(addressof(unex));
+//   has_val = true;
+// }
+// return *construct_at(addressof(val), std::forward<Args>(args)...);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+template <class T, class... Args>
+concept CanEmplace = requires(T t, Args&&... args) { t.emplace(std::forward<Args>(args)...); };
+
+static_assert(CanEmplace<std::expected<int, int>, int>);
+
+template <bool Noexcept>
+struct CtorFromInt {
+  CtorFromInt(int) noexcept(Noexcept);
+  CtorFromInt(int, int) noexcept(Noexcept);
+};
+
+static_assert(CanEmplace<std::expected<CtorFromInt<true>, int>, int>);
+static_assert(CanEmplace<std::expected<CtorFromInt<true>, int>, int, int>);
+static_assert(!CanEmplace<std::expected<CtorFromInt<false>, int>, int>);
+static_assert(!CanEmplace<std::expected<CtorFromInt<false>, int>, int, int>);
+
+constexpr bool test() {
+  // has_value
+  {
+    BothNoexcept::state oldState{};
+    BothNoexcept::state newState{};
+    std::expected<BothNoexcept, int> e(std::in_place, oldState, 5);
+    decltype(auto) x = e.emplace(newState, 10);
+    static_assert(std::same_as<decltype(x), BothNoexcept&>);
+    assert(&x == &(*e));
+
+    assert(oldState.dtorCalled);
+    assert(e.has_value());
+    assert(e.value().data_ == 10);
+  }
+
+  // !has_value
+  {
+    BothMayThrow::state oldState{};
+    std::expected<int, BothMayThrow> e(std::unexpect, oldState, 5);
+    decltype(auto) x = e.emplace(10);
+    static_assert(std::same_as<decltype(x), int&>);
+    assert(&x == &(*e));
+
+    assert(oldState.dtorCalled);
+    assert(e.has_value());
+    assert(e.value() == 10);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.convert.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.convert.copy.pass.cpp
new file mode 100644
index 0000000..9274b9a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.convert.copy.pass.cpp
@@ -0,0 +1,203 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+//  template<class U, class G>
+//    constexpr explicit(see below) expected(const expected<U, G>&);
+//
+// Let:
+// - UF be const U&
+// - GF be const G&
+//
+// Constraints:
+// - is_constructible_v<T, UF> is true; and
+// - is_constructible_v<E, GF> is true; and
+// - is_constructible_v<T, expected<U, G>&> is false; and
+// - is_constructible_v<T, expected<U, G>> is false; and
+// - is_constructible_v<T, const expected<U, G>&> is false; and
+// - is_constructible_v<T, const expected<U, G>> is false; and
+// - is_convertible_v<expected<U, G>&, T> is false; and
+// - is_convertible_v<expected<U, G>&&, T> is false; and
+// - is_convertible_v<const expected<U, G>&, T> is false; and
+// - is_convertible_v<const expected<U, G>&&, T> is false; and
+// - is_constructible_v<unexpected<E>, expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, expected<U, G>> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>> is false.
+//
+// Effects: If rhs.has_value(), direct-non-list-initializes val with std::forward<UF>(*rhs). Otherwise, direct-non-list-initializes unex with std::forward<GF>(rhs.error()).
+//
+// Postconditions: rhs.has_value() is unchanged; rhs.has_value() == this->has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val or unex.
+//
+// Remarks: The expression inside explicit is equivalent to !is_convertible_v<UF, T> || !is_convertible_v<GF, E>.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test Constraints:
+template <class T1, class Err1, class T2, class Err2>
+concept canCstrFromExpected = std::is_constructible_v<std::expected<T1, Err1>, const std::expected<T2, Err2>&>;
+
+struct CtorFromInt {
+  CtorFromInt(int);
+};
+
+static_assert(canCstrFromExpected<CtorFromInt, int, int, int>);
+
+struct NoCtorFromInt {};
+
+// !is_constructible_v<T, UF>
+static_assert(!canCstrFromExpected<NoCtorFromInt, int, int, int>);
+
+// !is_constructible_v<E, GF>
+static_assert(!canCstrFromExpected<int, NoCtorFromInt, int, int>);
+
+template <class T>
+struct CtorFrom {
+  explicit CtorFrom(int)
+    requires(!std::same_as<T, int>);
+  explicit CtorFrom(T);
+  explicit CtorFrom(auto&&) = delete;
+};
+
+// is_constructible_v<T, expected<U, G>&>
+static_assert(!canCstrFromExpected<CtorFrom<std::expected<int, int>&>, int, int, int>);
+
+// is_constructible_v<T, expected<U, G>>
+static_assert(!canCstrFromExpected<CtorFrom<std::expected<int, int>&&>, int, int, int>);
+
+// is_constructible_v<T, expected<U, G>&>
+// note that this is true because it is covered by the other overload
+//   template<class U = T> constexpr explicit(see below) expected(U&& v);
+// The fact that it is not ambiguous proves that the overload under testing is removed
+static_assert(canCstrFromExpected<CtorFrom<std::expected<int, int> const&>, int, int, int>);
+
+// is_constructible_v<T, expected<U, G>>
+static_assert(!canCstrFromExpected<CtorFrom<std::expected<int, int> const&&>, int, int, int>);
+
+template <class T>
+struct ConvertFrom {
+  ConvertFrom(int)
+    requires(!std::same_as<T, int>);
+  ConvertFrom(T);
+  ConvertFrom(auto&&) = delete;
+};
+
+// is_convertible_v<expected<U, G>&, T>
+static_assert(!canCstrFromExpected<ConvertFrom<std::expected<int, int>&>, int, int, int>);
+
+// is_convertible_v<expected<U, G>&&, T>
+static_assert(!canCstrFromExpected<ConvertFrom<std::expected<int, int>&&>, int, int, int>);
+
+// is_convertible_v<const expected<U, G>&, T>
+// note that this is true because it is covered by the other overload
+//   template<class U = T> constexpr explicit(see below) expected(U&& v);
+// The fact that it is not ambiguous proves that the overload under testing is removed
+static_assert(canCstrFromExpected<ConvertFrom<std::expected<int, int> const&>, int, int, int>);
+
+// is_convertible_v<const expected<U, G>&&, T>
+static_assert(!canCstrFromExpected<ConvertFrom<std::expected<int, int> const&&>, int, int, int>);
+
+// Note for below 4 tests, because their E is constructible from cvref of std::expected<int, int>,
+// unexpected<E> will be constructible from cvref of std::expected<int, int>
+// is_constructible_v<unexpected<E>, expected<U, G>&>
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int>&>, int, int>);
+
+// is_constructible_v<unexpected<E>, expected<U, G>>
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int>&&>, int, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>&> is false
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int> const&>, int, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>>
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int> const&&>, int, int>);
+
+// test explicit
+static_assert(std::is_convertible_v<const std::expected<int, int>&, std::expected<short, long>>);
+
+// !is_convertible_v<UF, T>
+static_assert(std::is_constructible_v<std::expected<CtorFrom<int>, int>, const std::expected<int, int>&>);
+static_assert(!std::is_convertible_v<const std::expected<int, int>&, std::expected<CtorFrom<int>, int>>);
+
+// !is_convertible_v<GF, E>.
+static_assert(std::is_constructible_v<std::expected<int, CtorFrom<int>>, const std::expected<int, int>&>);
+static_assert(!std::is_convertible_v<const std::expected<int, int>&, std::expected<int, CtorFrom<int>>>);
+
+struct Data {
+  int i;
+  constexpr Data(int ii) : i(ii) {}
+};
+
+constexpr bool test() {
+  // convert the value
+  {
+    const std::expected<int, int> e1(5);
+    std::expected<Data, int> e2 = e1;
+    assert(e2.has_value());
+    assert(e2.value().i == 5);
+    assert(e1.has_value());
+    assert(e1.value() == 5);
+  }
+
+  // convert the error
+  {
+    const std::expected<int, int> e1(std::unexpect, 5);
+    std::expected<int, Data> e2 = e1;
+    assert(!e2.has_value());
+    assert(e2.error().i == 5);
+    assert(!e1.has_value());
+    assert(e1.error() == 5);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct ThrowingInt {
+    ThrowingInt(int) { throw Except{}; }
+  };
+
+  // throw on converting value
+  {
+    const std::expected<int, int> e1;
+    try {
+      [[maybe_unused]] std::expected<ThrowingInt, int> e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+  // throw on converting error
+  {
+    const std::expected<int, int> e1(std::unexpect);
+    try {
+      [[maybe_unused]] std::expected<int, ThrowingInt> e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.convert.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.convert.move.pass.cpp
new file mode 100644
index 0000000..7197931
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.convert.move.pass.cpp
@@ -0,0 +1,202 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+//  template<class U, class G>
+//    constexpr explicit(see below) expected(expected<U, G>&&);
+//
+// Let:
+// - UF be const U
+// - GF be const G
+//
+// Constraints:
+// - is_constructible_v<T, UF> is true; and
+// - is_constructible_v<E, GF> is true; and
+// - is_constructible_v<T, expected<U, G>&> is false; and
+// - is_constructible_v<T, expected<U, G>> is false; and
+// - is_constructible_v<T, const expected<U, G>&> is false; and
+// - is_constructible_v<T, const expected<U, G>> is false; and
+// - is_convertible_v<expected<U, G>&, T> is false; and
+// - is_convertible_v<expected<U, G>&&, T> is false; and
+// - is_convertible_v<const expected<U, G>&, T> is false; and
+// - is_convertible_v<const expected<U, G>&&, T> is false; and
+// - is_constructible_v<unexpected<E>, expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, expected<U, G>> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>> is false.
+//
+// Effects: If rhs.has_value(), direct-non-list-initializes val with std::forward<UF>(*rhs). Otherwise, direct-non-list-initializes unex with std::forward<GF>(rhs.error()).
+//
+// Postconditions: rhs.has_value() is unchanged; rhs.has_value() == this->has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val or unex.
+//
+// Remarks: The expression inside explicit is equivalent to !is_convertible_v<UF, T> || !is_convertible_v<GF, E>.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+template <class T1, class Err1, class T2, class Err2>
+concept canCstrFromExpected = std::is_constructible_v<std::expected<T1, Err1>, std::expected<T2, Err2>&&>;
+
+struct CtorFromInt {
+  CtorFromInt(int);
+};
+
+static_assert(canCstrFromExpected<CtorFromInt, int, int, int>);
+
+struct NoCtorFromInt {};
+
+// !is_constructible_v<T, UF>
+static_assert(!canCstrFromExpected<NoCtorFromInt, int, int, int>);
+
+// !is_constructible_v<E, GF>
+static_assert(!canCstrFromExpected<int, NoCtorFromInt, int, int>);
+
+template <class T>
+struct CtorFrom {
+  explicit CtorFrom(int)
+    requires(!std::same_as<T, int>);
+  explicit CtorFrom(T);
+  explicit CtorFrom(auto&&) = delete;
+};
+
+// is_constructible_v<T, expected<U, G>&>
+static_assert(!canCstrFromExpected<CtorFrom<std::expected<int, int>&>, int, int, int>);
+
+// is_constructible_v<T, expected<U, G>>
+// note that this is true because it is covered by the other overload
+//   template<class U = T> constexpr explicit(see below) expected(U&& v);
+// The fact that it is not ambiguous proves that the overload under testing is removed
+static_assert(canCstrFromExpected<CtorFrom<std::expected<int, int>&&>, int, int, int>);
+
+// is_constructible_v<T, expected<U, G>&>
+static_assert(!canCstrFromExpected<CtorFrom<std::expected<int, int> const&>, int, int, int>);
+
+// is_constructible_v<T, expected<U, G>>
+static_assert(!canCstrFromExpected<CtorFrom<std::expected<int, int> const&&>, int, int, int>);
+
+template <class T>
+struct ConvertFrom {
+  ConvertFrom(int)
+    requires(!std::same_as<T, int>);
+  ConvertFrom(T);
+  ConvertFrom(auto&&) = delete;
+};
+
+// is_convertible_v<expected<U, G>&, T>
+static_assert(!canCstrFromExpected<ConvertFrom<std::expected<int, int>&>, int, int, int>);
+
+// is_convertible_v<expected<U, G>&&, T>
+// note that this is true because it is covered by the other overload
+//   template<class U = T> constexpr explicit(see below) expected(U&& v);
+// The fact that it is not ambiguous proves that the overload under testing is removed
+static_assert(canCstrFromExpected<ConvertFrom<std::expected<int, int>&&>, int, int, int>);
+
+// is_convertible_v<const expected<U, G>&, T>
+static_assert(!canCstrFromExpected<ConvertFrom<std::expected<int, int> const&>, int, int, int>);
+
+// is_convertible_v<const expected<U, G>&&, T>
+static_assert(!canCstrFromExpected<ConvertFrom<std::expected<int, int> const&&>, int, int, int>);
+
+// is_constructible_v<unexpected<E>, expected<U, G>&>
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int>&>, int, int>);
+
+// is_constructible_v<unexpected<E>, expected<U, G>>
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int>&&>, int, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>&> is false
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int> const&>, int, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>>
+static_assert(!canCstrFromExpected<int, CtorFrom<std::expected<int, int> const&&>, int, int>);
+
+// test explicit
+static_assert(std::is_convertible_v<std::expected<int, int>&&, std::expected<short, long>>);
+
+// !is_convertible_v<UF, T>
+static_assert(std::is_constructible_v<std::expected<CtorFrom<int>, int>, std::expected<int, int>&&>);
+static_assert(!std::is_convertible_v<std::expected<int, int>&&, std::expected<CtorFrom<int>, int>>);
+
+// !is_convertible_v<GF, E>.
+static_assert(std::is_constructible_v<std::expected<int, CtorFrom<int>>, std::expected<int, int>&&>);
+static_assert(!std::is_convertible_v<std::expected<int, int>&&, std::expected<int, CtorFrom<int>>>);
+
+struct Data {
+  MoveOnly data;
+  constexpr Data(MoveOnly&& m) : data(std::move(m)) {}
+};
+
+constexpr bool test() {
+  // convert the value
+  {
+    std::expected<MoveOnly, int> e1(5);
+    std::expected<Data, int> e2 = std::move(e1);
+    assert(e2.has_value());
+    assert(e2.value().data.get() == 5);
+    assert(e1.has_value());
+    assert(e1.value().get() == 0);
+  }
+
+  // convert the error
+  {
+    std::expected<int, MoveOnly> e1(std::unexpect, 5);
+    std::expected<int, Data> e2 = std::move(e1);
+    assert(!e2.has_value());
+    assert(e2.error().data.get() == 5);
+    assert(!e1.has_value());
+    assert(e1.error().get() == 0);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct ThrowingInt {
+    ThrowingInt(int) { throw Except{}; }
+  };
+
+  // throw on converting value
+  {
+    const std::expected<int, int> e1;
+    try {
+      [[maybe_unused]] std::expected<ThrowingInt, int> e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+  // throw on converting error
+  {
+    const std::expected<int, int> e1(std::unexpect);
+    try {
+      [[maybe_unused]] std::expected<int, ThrowingInt> e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.copy.pass.cpp
new file mode 100644
index 0000000..77d7348
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.copy.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr expected(const expected& rhs);
+//
+// Effects: If rhs.has_value() is true, direct-non-list-initializes val with *rhs.
+// Otherwise, direct-non-list-initializes unex with rhs.error().
+//
+// Postconditions: rhs.has_value() == this->has_value().
+//
+// Throws: Any exception thrown by the initialization of val or unex.
+//
+// Remarks: This constructor is defined as deleted unless
+// - is_copy_constructible_v<T> is true and
+// - is_copy_constructible_v<E> is true.
+//
+// This constructor is trivial if
+// - is_trivially_copy_constructible_v<T> is true and
+// - is_trivially_copy_constructible_v<E> is true.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct NonCopyable {
+  NonCopyable(const NonCopyable&) = delete;
+};
+
+struct CopyableNonTrivial {
+  int i;
+  constexpr CopyableNonTrivial(int ii) : i(ii) {}
+  constexpr CopyableNonTrivial(const CopyableNonTrivial& o) { i = o.i; }
+  friend constexpr bool operator==(const CopyableNonTrivial&, const CopyableNonTrivial&) = default;
+};
+
+// Test: This constructor is defined as deleted unless
+// - is_copy_constructible_v<T> is true and
+// - is_copy_constructible_v<E> is true.
+static_assert(std::is_copy_constructible_v<std::expected<int, int>>);
+static_assert(std::is_copy_constructible_v<std::expected<CopyableNonTrivial, int>>);
+static_assert(std::is_copy_constructible_v<std::expected<int, CopyableNonTrivial>>);
+static_assert(std::is_copy_constructible_v<std::expected<CopyableNonTrivial, CopyableNonTrivial>>);
+static_assert(!std::is_copy_constructible_v<std::expected<NonCopyable, int>>);
+static_assert(!std::is_copy_constructible_v<std::expected<int, NonCopyable>>);
+static_assert(!std::is_copy_constructible_v<std::expected<NonCopyable, NonCopyable>>);
+
+// Test: This constructor is trivial if
+// - is_trivially_copy_constructible_v<T> is true and
+// - is_trivially_copy_constructible_v<E> is true.
+static_assert(std::is_trivially_copy_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_trivially_copy_constructible_v<std::expected<CopyableNonTrivial, int>>);
+static_assert(!std::is_trivially_copy_constructible_v<std::expected<int, CopyableNonTrivial>>);
+static_assert(!std::is_trivially_copy_constructible_v<std::expected<CopyableNonTrivial, CopyableNonTrivial>>);
+
+constexpr bool test() {
+  // copy the value non-trivial
+  {
+    const std::expected<CopyableNonTrivial, int> e1(5);
+    auto e2 = e1;
+    assert(e2.has_value());
+    assert(e2.value().i == 5);
+  }
+
+  // copy the error non-trivial
+  {
+    const std::expected<int, CopyableNonTrivial> e1(std::unexpect, 5);
+    auto e2 = e1;
+    assert(!e2.has_value());
+    assert(e2.error().i == 5);
+  }
+
+  // copy the value trivial
+  {
+    const std::expected<int, int> e1(5);
+    auto e2 = e1;
+    assert(e2.has_value());
+    assert(e2.value() == 5);
+  }
+
+  // copy the error trivial
+  {
+    const std::expected<int, int> e1(std::unexpect, 5);
+    auto e2 = e1;
+    assert(!e2.has_value());
+    assert(e2.error() == 5);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing() = default;
+    Throwing(const Throwing&) { throw Except{}; }
+  };
+
+  // throw on copying value
+  {
+    const std::expected<Throwing, int> e1;
+    try {
+      [[maybe_unused]] auto e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+  // throw on copying error
+  {
+    const std::expected<int, Throwing> e1(std::unexpect);
+    try {
+      [[maybe_unused]] auto e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.default.pass.cpp
new file mode 100644
index 0000000..431e604
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.default.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+//
+// constexpr expected();
+
+// Constraints: is_default_constructible_v<T> is true.
+//
+// Effects: Value-initializes val.
+// Postconditions: has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct NoDedefaultCtor {
+  NoDedefaultCtor() = delete;
+};
+
+// Test constraints
+static_assert(std::is_default_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_default_constructible_v<std::expected<NoDedefaultCtor, int>>);
+
+struct MyInt {
+  int i;
+  friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
+};
+
+template <class T, class E>
+constexpr void testDefaultCtor() {
+  std::expected<T, E> e;
+  assert(e.has_value());
+  assert(e.value() == T());
+}
+
+template <class T>
+constexpr void testTypes() {
+  testDefaultCtor<T, int>();
+  testDefaultCtor<T, NoDedefaultCtor>();
+}
+
+constexpr bool test() {
+  testTypes<int>();
+  testTypes<MyInt>();
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing() { throw Except{}; };
+  };
+
+  try {
+    std::expected<Throwing, int> u;
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace.pass.cpp
new file mode 100644
index 0000000..9295255
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class... Args>
+//   constexpr explicit expected(in_place_t, Args&&... args);
+//
+// Constraints: is_constructible_v<T, Args...> is true.
+//
+// Effects: Direct-non-list-initializes val with std::forward<Args>(args)....
+//
+// Postconditions: has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <tuple>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(std::is_constructible_v<std::expected<int, int>, std::in_place_t>);
+static_assert(std::is_constructible_v<std::expected<int, int>, std::in_place_t, int>);
+
+// !is_constructible_v<T, Args...>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<foo, int>, std::in_place_t, int>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(!ImplicitlyConstructible<std::expected<int, int>, std::in_place_t>);
+static_assert(!ImplicitlyConstructible<std::expected<int, int>, std::in_place_t, int>);
+
+struct CopyOnly {
+  int i;
+  constexpr CopyOnly(int ii) : i(ii) {}
+  CopyOnly(const CopyOnly&) = default;
+  CopyOnly(CopyOnly&&)      = delete;
+  friend constexpr bool operator==(const CopyOnly& mi, int ii) { return mi.i == ii; }
+};
+
+template <class T>
+constexpr void testInt() {
+  std::expected<T, int> e(std::in_place, 5);
+  assert(e.has_value());
+  assert(e.value() == 5);
+}
+
+template <class T>
+constexpr void testLValue() {
+  T t(5);
+  std::expected<T, int> e(std::in_place, t);
+  assert(e.has_value());
+  assert(e.value() == 5);
+}
+
+template <class T>
+constexpr void testRValue() {
+  std::expected<T, int> e(std::in_place, T(5));
+  assert(e.has_value());
+  assert(e.value() == 5);
+}
+
+constexpr bool test() {
+  testInt<int>();
+  testInt<CopyOnly>();
+  testInt<MoveOnly>();
+  testLValue<int>();
+  testLValue<CopyOnly>();
+  testRValue<int>();
+  testRValue<MoveOnly>();
+
+  // no arg
+  {
+    std::expected<int, int> e(std::in_place);
+    assert(e.has_value());
+    assert(e.value() == 0);
+  }
+
+  // one arg
+  {
+    std::expected<int, int> e(std::in_place, 5);
+    assert(e.has_value());
+    assert(e.value() == 5);
+  }
+
+  // multi args
+  {
+    std::expected<std::tuple<int, short, MoveOnly>, int> e(std::in_place, 1, short{2}, MoveOnly(3));
+    assert(e.has_value());
+    assert((e.value() == std::tuple<int, short, MoveOnly>(1, short{2}, MoveOnly(3))));
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<Throwing, int> u(std::in_place, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp
new file mode 100644
index 0000000..3e85f87
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.inplace_init_list.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class U, class... Args>
+//   constexpr explicit expected(in_place_t, initializer_list<U> il, Args&&... args);
+//
+// Constraints: is_constructible_v<T, initializer_list<U>&, Args...> is true.
+//
+// Effects: Direct-non-list-initializes val with il, std::forward<Args>(args)....
+//
+// Postconditions: has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val.
+
+#include <algorithm>
+#include <cassert>
+#include <expected>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(
+    std::is_constructible_v<std::expected<std::vector<int>, int>, std::in_place_t, std::initializer_list<int>>);
+
+// !is_constructible_v<T, initializer_list<U>&, Args...>
+static_assert(!std::is_constructible_v<std::expected<int, int>, std::in_place_t, std::initializer_list<int>>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(
+    !ImplicitlyConstructible<std::expected<std::vector<int>, int>, std::in_place_t, std::initializer_list<int>>);
+
+template <class... Ts>
+struct Data {
+  std::vector<int> vec_;
+  std::tuple<Ts...> tuple_;
+
+  template <class... Us>
+    requires std::is_constructible_v<std::tuple<Ts...>, Us&&...>
+  constexpr Data(std::initializer_list<int> il, Us&&... us) : vec_(il), tuple_(std::forward<Us>(us)...) {}
+};
+
+constexpr bool test() {
+  // no arg
+  {
+    std::expected<Data<>, int> e(std::in_place, {1, 2, 3});
+    assert(e.has_value());
+    auto expectedList = {1, 2, 3};
+    assert(std::ranges::equal(e.value().vec_, expectedList));
+  }
+
+  // one arg
+  {
+    std::expected<Data<MoveOnly>, int> e(std::in_place, {4, 5, 6}, MoveOnly(5));
+    assert(e.has_value());
+    auto expectedList = {4, 5, 6};
+    assert((std::ranges::equal(e.value().vec_, expectedList)));
+    assert(std::get<0>(e.value().tuple_) == 5);
+  }
+
+  // multi args
+  {
+    int i = 5;
+    int j = 6;
+    MoveOnly m(7);
+    std::expected<Data<int&, int&&, MoveOnly>, int> e(std::in_place, {1, 2}, i, std::move(j), std::move(m));
+    assert(e.has_value());
+    auto expectedList = {1, 2};
+    assert((std::ranges::equal(e.value().vec_, expectedList)));
+    assert(&std::get<0>(e.value().tuple_) == &i);
+    assert(&std::get<1>(e.value().tuple_) == &j);
+    assert(std::get<2>(e.value().tuple_) == 7);
+    assert(m.get() == 0);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(std::initializer_list<int>, int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<Throwing, int> u(std::in_place, {1, 2}, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.move.pass.cpp
new file mode 100644
index 0000000..5e6749e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.move.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr expected(expected&& rhs) noexcept(see below);
+//
+// Constraints:
+// - is_move_constructible_v<T> is true and
+// - is_move_constructible_v<E> is true.
+//
+// Effects: If rhs.has_value() is true, direct-non-list-initializes val with std::move(*rhs).
+// Otherwise, direct-non-list-initializes unex with std::move(rhs.error()).
+//
+// Postconditions: rhs.has_value() is unchanged; rhs.has_value() == this->has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val or unex.
+//
+// Remarks: The exception specification is equivalent to is_nothrow_move_constructible_v<T> && is_nothrow_move_constructible_v<E>.
+//
+// This constructor is trivial if
+// - is_trivially_move_constructible_v<T> is true and
+// - is_trivially_move_constructible_v<E> is true.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct NonMovable {
+  NonMovable(NonMovable&&) = delete;
+};
+
+struct MovableNonTrivial {
+  int i;
+  constexpr MovableNonTrivial(int ii) : i(ii) {}
+  constexpr MovableNonTrivial(MovableNonTrivial&& o) : i(o.i) { o.i = 0; }
+  friend constexpr bool operator==(const MovableNonTrivial&, const MovableNonTrivial&) = default;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow&&) {}
+};
+
+// Test Constraints:
+// - is_move_constructible_v<T> is true and
+// - is_move_constructible_v<E> is true.
+static_assert(std::is_move_constructible_v<std::expected<int, int>>);
+static_assert(std::is_move_constructible_v<std::expected<MovableNonTrivial, int>>);
+static_assert(std::is_move_constructible_v<std::expected<int, MovableNonTrivial>>);
+static_assert(std::is_move_constructible_v<std::expected<MovableNonTrivial, MovableNonTrivial>>);
+static_assert(!std::is_move_constructible_v<std::expected<NonMovable, int>>);
+static_assert(!std::is_move_constructible_v<std::expected<int, NonMovable>>);
+static_assert(!std::is_move_constructible_v<std::expected<NonMovable, NonMovable>>);
+
+// Test: This constructor is trivial if
+// - is_trivially_move_constructible_v<T> is true and
+// - is_trivially_move_constructible_v<E> is true.
+static_assert(std::is_trivially_move_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_trivially_move_constructible_v<std::expected<MovableNonTrivial, int>>);
+static_assert(!std::is_trivially_move_constructible_v<std::expected<int, MovableNonTrivial>>);
+static_assert(!std::is_trivially_move_constructible_v<std::expected<MovableNonTrivial, MovableNonTrivial>>);
+
+// Test: The exception specification is equivalent to
+// is_nothrow_move_constructible_v<T> && is_nothrow_move_constructible_v<E>.
+static_assert(std::is_nothrow_move_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_nothrow_move_constructible_v<std::expected<MoveMayThrow, int>>);
+static_assert(!std::is_nothrow_move_constructible_v<std::expected<int, MoveMayThrow>>);
+static_assert(!std::is_nothrow_move_constructible_v<std::expected<MoveMayThrow, MoveMayThrow>>);
+
+constexpr bool test() {
+  // move the value non-trivial
+  {
+    std::expected<MovableNonTrivial, int> e1(5);
+    auto e2 = std::move(e1);
+    assert(e2.has_value());
+    assert(e2.value().i == 5);
+    assert(e1.has_value());
+    assert(e1.value().i == 0);
+  }
+
+  // move the error non-trivial
+  {
+    std::expected<int, MovableNonTrivial> e1(std::unexpect, 5);
+    auto e2 = std::move(e1);
+    assert(!e2.has_value());
+    assert(e2.error().i == 5);
+    assert(!e1.has_value());
+    assert(e1.error().i == 0);
+  }
+
+  // move the value trivial
+  {
+    std::expected<int, int> e1(5);
+    auto e2 = std::move(e1);
+    assert(e2.has_value());
+    assert(e2.value() == 5);
+    assert(e1.has_value());
+  }
+
+  // move the error trivial
+  {
+    std::expected<int, int> e1(std::unexpect, 5);
+    auto e2 = std::move(e1);
+    assert(!e2.has_value());
+    assert(e2.error() == 5);
+    assert(!e1.has_value());
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing() = default;
+    Throwing(Throwing&&) { throw Except{}; }
+  };
+
+  // throw on moving value
+  {
+    std::expected<Throwing, int> e1;
+    try {
+      [[maybe_unused]] auto e2 = std::move(e1);
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+  // throw on moving error
+  {
+    std::expected<int, Throwing> e1(std::unexpect);
+    try {
+      [[maybe_unused]] auto e2 = std::move(e1);
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.u.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.u.pass.cpp
new file mode 100644
index 0000000..f05c2d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.u.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class U = T>
+//   constexpr explicit(!is_convertible_v<U, T>) expected(U&& v);
+//
+// Constraints:
+// - is_same_v<remove_cvref_t<U>, in_place_t> is false; and
+// - is_same_v<expected, remove_cvref_t<U>> is false; and
+// - remove_cvref_t<U> is not a specialization of unexpected; and
+// - is_constructible_v<T, U> is true.
+//
+// Effects: Direct-non-list-initializes val with std::forward<U>(v).
+//
+// Postconditions: has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of val.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(std::is_constructible_v<std::expected<int, int>, int>);
+
+// is_same_v<remove_cvref_t<U>, in_place_t>
+struct FromJustInplace {
+  FromJustInplace(std::in_place_t);
+};
+static_assert(!std::is_constructible_v<std::expected<FromJustInplace, int>, std::in_place_t>);
+static_assert(!std::is_constructible_v<std::expected<FromJustInplace, int>, std::in_place_t const&>);
+
+// is_same_v<expected, remove_cvref_t<U>>
+// Note that result is true because it is covered by the constructors that take expected
+static_assert(std::is_constructible_v<std::expected<int, int>, std::expected<int, int>&>);
+
+// remove_cvref_t<U> is a specialization of unexpected
+// Note that result is true because it is covered by the constructors that take unexpected
+static_assert(std::is_constructible_v<std::expected<int, int>, std::unexpected<int>&>);
+
+// !is_constructible_v<T, U>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<int, int>, foo>);
+
+// test explicit(!is_convertible_v<U, T>)
+struct NotConvertible {
+  explicit NotConvertible(int);
+};
+static_assert(std::is_convertible_v<int, std::expected<int, int>>);
+static_assert(!std::is_convertible_v<int, std::expected<NotConvertible, int>>);
+
+struct CopyOnly {
+  int i;
+  constexpr CopyOnly(int ii) : i(ii) {}
+  CopyOnly(const CopyOnly&) = default;
+  CopyOnly(CopyOnly&&)      = delete;
+  friend constexpr bool operator==(const CopyOnly& mi, int ii) { return mi.i == ii; }
+};
+
+template <class T>
+constexpr void testInt() {
+  std::expected<T, int> e(5);
+  assert(e.has_value());
+  assert(e.value() == 5);
+}
+
+template <class T>
+constexpr void testLValue() {
+  T t(5);
+  std::expected<T, int> e(t);
+  assert(e.has_value());
+  assert(e.value() == 5);
+}
+
+template <class T>
+constexpr void testRValue() {
+  std::expected<T, int> e(T(5));
+  assert(e.has_value());
+  assert(e.value() == 5);
+}
+
+constexpr bool test() {
+  testInt<int>();
+  testInt<CopyOnly>();
+  testInt<MoveOnly>();
+  testLValue<int>();
+  testLValue<CopyOnly>();
+  testRValue<int>();
+  testRValue<MoveOnly>();
+
+  // Test default template argument.
+  // Without it, the template parameter cannot be deduced from an initializer list
+  {
+    struct Bar {
+      int i;
+      int j;
+      constexpr Bar(int ii, int jj) : i(ii), j(jj) {}
+    };
+
+    std::expected<Bar, int> e({5, 6});
+    assert(e.value().i == 5);
+    assert(e.value().j == 6);
+  }
+
+  // this is a confusing example, but the behaviour
+  // is exactly what is specified in the spec
+  // see https://cplusplus.github.io/LWG/issue3836
+  {
+    struct BaseError {};
+    struct DerivedError : BaseError {};
+
+    std::expected<bool, DerivedError> e1(false);
+    std::expected<bool, BaseError> e2(e1);
+    assert(e2.has_value());
+    assert(e2.value()); // yes, e2 holds "true"
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<Throwing, int> u(5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect.pass.cpp
new file mode 100644
index 0000000..5a78e41
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class... Args>
+//   constexpr explicit expected(unexpect_t, Args&&... args);
+//
+// Constraints: is_constructible_v<E, Args...> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<Args>(args)....
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <expected>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(std::is_constructible_v<std::expected<int, int>, std::unexpect_t>);
+static_assert(std::is_constructible_v<std::expected<int, int>, std::unexpect_t, int>);
+
+// !is_constructible_v<T, Args...>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<int, foo>, std::unexpect_t, int>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(!ImplicitlyConstructible<std::expected<int, int>, std::unexpect_t>);
+static_assert(!ImplicitlyConstructible<std::expected<int, int>, std::unexpect_t, int>);
+
+struct CopyOnly {
+  int i;
+  constexpr CopyOnly(int ii) : i(ii) {}
+  CopyOnly(const CopyOnly&) = default;
+  CopyOnly(CopyOnly&&)      = delete;
+  friend constexpr bool operator==(const CopyOnly& mi, int ii) { return mi.i == ii; }
+};
+
+template <class T>
+constexpr void testInt() {
+  std::expected<int, T> e(std::unexpect, 5);
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+template <class T>
+constexpr void testLValue() {
+  T t(5);
+  std::expected<int, T> e(std::unexpect, t);
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+template <class T>
+constexpr void testRValue() {
+  std::expected<int, T> e(std::unexpect, T(5));
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+constexpr bool test() {
+  testInt<int>();
+  testInt<CopyOnly>();
+  testInt<MoveOnly>();
+  testLValue<int>();
+  testLValue<CopyOnly>();
+  testRValue<int>();
+  testRValue<MoveOnly>();
+
+  // no arg
+  {
+    std::expected<int, int> e(std::unexpect);
+    assert(!e.has_value());
+    assert(e.error() == 0);
+  }
+
+  // one arg
+  {
+    std::expected<int, int> e(std::unexpect, 5);
+    assert(!e.has_value());
+    assert(e.error() == 5);
+  }
+
+  // multi args
+  {
+    std::expected<int, std::tuple<int, short, MoveOnly>> e(std::unexpect, 1, short{2}, MoveOnly(3));
+    assert(!e.has_value());
+    assert((e.error() == std::tuple<int, short, MoveOnly>(1, short{2}, MoveOnly(3))));
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<int, Throwing> u(std::unexpect, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp
new file mode 100644
index 0000000..20ab114
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpect_init_list.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class U, class... Args>
+//   constexpr explicit expected(unexpect_t, initializer_list<U> il, Args&&... args);
+//
+// Constraints: is_constructible_v<E, initializer_list<U>&, Args...> is true.
+//
+// Effects: Direct-non-list-initializes unex with il, std::forward<Args>(args)....
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <algorithm>
+#include <cassert>
+#include <expected>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(
+    std::is_constructible_v<std::expected<int, std::vector<int>>, std::unexpect_t, std::initializer_list<int>>);
+
+// !is_constructible_v<T, initializer_list<U>&, Args...>
+static_assert(!std::is_constructible_v<std::expected<int, int>, std::unexpect_t, std::initializer_list<int>>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(
+    !ImplicitlyConstructible<std::expected<int, std::vector<int>>, std::unexpect_t, std::initializer_list<int>>);
+
+template <class... Ts>
+struct Data {
+  std::vector<int> vec_;
+  std::tuple<Ts...> tuple_;
+
+  template <class... Us>
+    requires std::is_constructible_v<std::tuple<Ts...>, Us&&...>
+  constexpr Data(std::initializer_list<int> il, Us&&... us) : vec_(il), tuple_(std::forward<Us>(us)...) {}
+};
+
+constexpr bool test() {
+  // no arg
+  {
+    std::expected<int, Data<>> e(std::unexpect, {1, 2, 3});
+    assert(!e.has_value());
+    auto expectedList = {1, 2, 3};
+    assert(std::ranges::equal(e.error().vec_, expectedList));
+  }
+
+  // one arg
+  {
+    std::expected<int, Data<MoveOnly>> e(std::unexpect, {4, 5, 6}, MoveOnly(5));
+    assert(!e.has_value());
+    auto expectedList = {4, 5, 6};
+    assert((std::ranges::equal(e.error().vec_, expectedList)));
+    assert(std::get<0>(e.error().tuple_) == 5);
+  }
+
+  // multi args
+  {
+    int i = 5;
+    int j = 6;
+    MoveOnly m(7);
+    std::expected<int, Data<int&, int&&, MoveOnly>> e(std::unexpect, {1, 2}, i, std::move(j), std::move(m));
+    assert(!e.has_value());
+    auto expectedList = {1, 2};
+    assert((std::ranges::equal(e.error().vec_, expectedList)));
+    assert(&std::get<0>(e.error().tuple_) == &i);
+    assert(&std::get<1>(e.error().tuple_) == &j);
+    assert(std::get<2>(e.error().tuple_) == 7);
+    assert(m.get() == 0);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(std::initializer_list<int>, int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<int, Throwing> u(std::unexpect, {1, 2}, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpected.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpected.copy.pass.cpp
new file mode 100644
index 0000000..09ac911
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpected.copy.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class G>
+//   constexpr explicit(!is_convertible_v<const G&, E>) expected(const unexpected<G>& e);
+//
+// Let GF be const G&
+//
+// Constraints: is_constructible_v<E, GF> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<GF>(e.error()).
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints
+static_assert(std::is_constructible_v<std::expected<int, int>, const std::unexpected<int>&>);
+
+// !is_constructible_v<E, GF>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<int, int>, const std::unexpected<foo>&>);
+static_assert(!std::is_constructible_v<std::expected<int, MoveOnly>, const std::unexpected<MoveOnly>&>);
+
+// explicit(!is_convertible_v<const G&, E>)
+struct NotConvertible {
+  explicit NotConvertible(int);
+};
+static_assert(std::is_convertible_v<const std::unexpected<int>&, std::expected<int, int>>);
+static_assert(!std::is_convertible_v<const std::unexpected<int>&, std::expected<int, NotConvertible>>);
+
+struct MyInt {
+  int i;
+  constexpr MyInt(int ii) : i(ii) {}
+  friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
+};
+
+template <class T>
+constexpr void testUnexpected() {
+  const std::unexpected<int> u(5);
+  std::expected<int, T> e(u);
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+constexpr bool test() {
+  testUnexpected<int>();
+  testUnexpected<MyInt>();
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; }
+  };
+
+  {
+    const std::unexpected<int> u(5);
+    try {
+      [[maybe_unused]] std::expected<int, Throwing> e(u);
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpected.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpected.move.pass.cpp
new file mode 100644
index 0000000..9aaaa3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/ctor/ctor.unexpected.move.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class G>
+//   constexpr explicit(!is_convertible_v<G, E>) expected(unexpected<G>&& e);
+//
+// Let GF be G
+//
+// Constraints: is_constructible_v<E, GF> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<GF>(e.error()).
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints
+static_assert(std::is_constructible_v<std::expected<int, int>, std::unexpected<int>>);
+static_assert(std::is_constructible_v<std::expected<int, MoveOnly>, std::unexpected<MoveOnly>>);
+
+// !is_constructible_v<E, GF>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<int, int>, std::unexpected<foo>>);
+
+// explicit(!is_convertible_v<G, E>)
+struct NotConvertible {
+  explicit NotConvertible(int);
+};
+static_assert(std::is_convertible_v<std::unexpected<int>&&, std::expected<int, int>>);
+static_assert(!std::is_convertible_v<std::unexpected<int>&&, std::expected<int, NotConvertible>>);
+
+struct MyInt {
+  int i;
+  constexpr MyInt(int ii) : i(ii) {}
+  friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
+};
+
+template <class Err>
+constexpr void testInt() {
+  std::unexpected<int> u(5);
+  std::expected<int, Err> e(std::move(u));
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+constexpr void testMoveOnly() {
+  std::unexpected<MoveOnly> u(MoveOnly(5));
+  std::expected<int, MoveOnly> e(std::move(u));
+  assert(!e.has_value());
+  assert(e.error() == 5);
+  assert(u.error() == 0);
+}
+
+constexpr bool test() {
+  testInt<int>();
+  testInt<MyInt>();
+  testInt<MoveOnly>();
+  testMoveOnly();
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; }
+  };
+
+  {
+    std::unexpected<int> u(5);
+    try {
+      [[maybe_unused]] std::expected<int, Throwing> e(std::move(u));
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp
new file mode 100644
index 0000000..6abbe51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/dtor.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr ~expected();
+//
+// Effects: If has_value() is true, destroys val, otherwise destroys unex.
+//
+// Remarks: If is_trivially_destructible_v<T> is true, and is_trivially_destructible_v<E> is true,
+// then this destructor is a trivial destructor.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+#include <memory>
+
+#include "test_macros.h"
+
+// Test Remarks: If is_trivially_destructible_v<T> is true, and is_trivially_destructible_v<E> is true,
+// then this destructor is a trivial destructor.
+struct NonTrivial {
+  ~NonTrivial() {}
+};
+
+static_assert(std::is_trivially_destructible_v<std::expected<int, int>>);
+static_assert(!std::is_trivially_destructible_v<std::expected<NonTrivial, int>>);
+static_assert(!std::is_trivially_destructible_v<std::expected<int, NonTrivial>>);
+static_assert(!std::is_trivially_destructible_v<std::expected<NonTrivial, NonTrivial>>);
+
+struct TrackedDestroy {
+  bool& destroyed;
+  constexpr TrackedDestroy(bool& b) : destroyed(b) {}
+  constexpr ~TrackedDestroy() { destroyed = true; }
+};
+
+constexpr bool test() {
+  // has value
+  {
+    bool valueDestroyed = false;
+    { [[maybe_unused]] std::expected<TrackedDestroy, TrackedDestroy> e(std::in_place, valueDestroyed); }
+    assert(valueDestroyed);
+  }
+
+  // has error
+  {
+    bool errorDestroyed = false;
+    { [[maybe_unused]] std::expected<TrackedDestroy, TrackedDestroy> e(std::unexpect, errorDestroyed); }
+    assert(errorDestroyed);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  std::expected<std::unique_ptr<int>, int> a = std::make_unique<int>(42);
+
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.T2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.T2.pass.cpp
new file mode 100644
index 0000000..29945d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.T2.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class T2> friend constexpr bool operator==(const expected& x, const T2& v);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Data {
+  int i;
+  constexpr Data(int ii) : i(ii) {}
+
+  friend constexpr bool operator==(const Data& data, int ii) { return data.i == ii; }
+};
+
+constexpr bool test() {
+  // x.has_value()
+  {
+    const std::expected<Data, int> e1(std::in_place, 5);
+    int i2 = 10;
+    int i3 = 5;
+    assert(e1 != i2);
+    assert(e1 == i3);
+  }
+
+  // !x.has_value()
+  {
+    const std::expected<Data, int> e1(std::unexpect, 5);
+    int i2 = 10;
+    int i3 = 5;
+    assert(e1 != i2);
+    assert(e1 != i3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.other_expected.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.other_expected.pass.cpp
new file mode 100644
index 0000000..62f0d6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.other_expected.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class T2, class E2> requires (!is_void_v<T2>)
+//   friend constexpr bool operator==(const expected& x, const expected<T2, E2>& y);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test constraint
+template <class T1, class T2>
+concept CanCompare = requires(T1 t1, T2 t2) { t1 == t2; };
+
+struct Foo{};
+static_assert(!CanCompare<Foo, Foo>);
+
+static_assert(CanCompare<std::expected<int, int>, std::expected<int, int>>);
+static_assert(CanCompare<std::expected<int, int>, std::expected<short, short>>);
+
+// Note this is true because other overloads are unconstrained
+static_assert(CanCompare<std::expected<int, int>, std::expected<void, int>>);
+
+constexpr bool test() {
+  // x.has_value() && y.has_value()
+  {
+    const std::expected<int, int> e1(5);
+    const std::expected<int, int> e2(10);
+    const std::expected<int, int> e3(5);
+    assert(e1 != e2);
+    assert(e1 == e3);
+  }
+
+  // !x.has_value() && y.has_value()
+  {
+    const std::expected<int, int> e1(std::unexpect, 5);
+    const std::expected<int, int> e2(10);
+    const std::expected<int, int> e3(5);
+    assert(e1 != e2);
+    assert(e1 != e3);
+  }
+
+  // x.has_value() && !y.has_value()
+  {
+    const std::expected<int, int> e1(5);
+    const std::expected<int, int> e2(std::unexpect, 10);
+    const std::expected<int, int> e3(std::unexpect, 5);
+    assert(e1 != e2);
+    assert(e1 != e3);
+  }
+
+  // !x.has_value() && !y.has_value()
+  {
+    const std::expected<int, int> e1(std::unexpect, 5);
+    const std::expected<int, int> e2(std::unexpect, 10);
+    const std::expected<int, int> e3(std::unexpect, 5);
+    assert(e1 != e2);
+    assert(e1 == e3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.unexpected.pass.cpp
new file mode 100644
index 0000000..963f39b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/equality/equality.unexpected.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class E2> friend constexpr bool operator==(const expected& x, const unexpected<E2>& e);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Data {
+  int i;
+  constexpr Data(int ii) : i(ii) {}
+
+  friend constexpr bool operator==(const Data& data, int ii) { return data.i == ii; }
+};
+
+constexpr bool test() {
+  // x.has_value()
+  {
+    const std::expected<Data, Data> e1(std::in_place, 5);
+    std::unexpected<int> un2(10);
+    std::unexpected<int> un3(5);
+    assert(e1 != un2);
+    assert(e1 != un3);
+  }
+
+  // !x.has_value()
+  {
+    const std::expected<Data, Data> e1(std::unexpect, 5);
+    std::unexpected<int> un2(10);
+    std::unexpected<int> un3(5);
+    assert(e1 != un2);
+    assert(e1 == un3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/arrow.pass.cpp
new file mode 100644
index 0000000..72fb166
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/arrow.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const T* operator->() const noexcept;
+// constexpr T* operator->() noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept ArrowNoexcept =
+    requires(T t) {
+      { t.operator->() } noexcept;
+    };
+
+static_assert(!ArrowNoexcept<int>);
+
+static_assert(ArrowNoexcept<std::expected<int, int>>);
+static_assert(ArrowNoexcept<const std::expected<int, int>>);
+
+constexpr bool test() {
+  // const
+  {
+    const std::expected<int, int> e(5);
+    std::same_as<const int*> decltype(auto) x = e.operator->();
+    assert(x == &(e.value()));
+    assert(*x == 5);
+  }
+
+  // non-const
+  {
+    std::expected<int, int> e(5);
+    std::same_as<int*> decltype(auto) x = e.operator->();
+    assert(x == &(e.value()));
+    assert(*x == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/bool.pass.cpp
new file mode 100644
index 0000000..8daecf3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/bool.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr explicit operator bool() const noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept OpBoolNoexcept =
+    requires(T t) {
+      { static_cast<bool>(t) } noexcept;
+    };
+
+struct Foo {};
+static_assert(!OpBoolNoexcept<Foo>);
+
+static_assert(OpBoolNoexcept<std::expected<int, int>>);
+static_assert(OpBoolNoexcept<const std::expected<int, int>>);
+
+// Test explicit
+static_assert(!std::is_convertible_v<std::expected<int, int>, bool>);
+
+constexpr bool test() {
+  // has_value
+  {
+    const std::expected<int, int> e(5);
+    assert(static_cast<bool>(e));
+  }
+
+  // !has_value
+  {
+    const std::expected<int, int> e(std::unexpect, 5);
+    assert(!static_cast<bool>(e));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/deref.pass.cpp
new file mode 100644
index 0000000..80bc243
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/deref.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const T& operator*() const & noexcept;
+// constexpr T& operator*() & noexcept;
+// constexpr T&& operator*() && noexcept;
+// constexpr const T&& operator*() const && noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept DerefNoexcept =
+    requires(T t) {
+      { std::forward<T>(t).operator*() } noexcept;
+    };
+
+static_assert(!DerefNoexcept<int>);
+
+static_assert(DerefNoexcept<std::expected<int, int>&>);
+static_assert(DerefNoexcept<const std::expected<int, int>&>);
+static_assert(DerefNoexcept<std::expected<int, int>&&>);
+static_assert(DerefNoexcept<const std::expected<int, int>&&>);
+
+constexpr bool test() {
+  // non-const &
+  {
+    std::expected<int, int> e(5);
+    decltype(auto) x = *e;
+    static_assert(std::same_as<decltype(x), int&>);
+    assert(&x == &(e.value()));
+    assert(x == 5);
+  }
+
+  // const &
+  {
+    const std::expected<int, int> e(5);
+    decltype(auto) x = *e;
+    static_assert(std::same_as<decltype(x), const int&>);
+    assert(&x == &(e.value()));
+    assert(x == 5);
+  }
+
+  // non-const &&
+  {
+    std::expected<int, int> e(5);
+    decltype(auto) x = *std::move(e);
+    static_assert(std::same_as<decltype(x), int&&>);
+    assert(&x == &(e.value()));
+    assert(x == 5);
+  }
+
+  // const &&
+  {
+    const std::expected<int, int> e(5);
+    decltype(auto) x = *std::move(e);
+    static_assert(std::same_as<decltype(x), const int&&>);
+    assert(&x == &(e.value()));
+    assert(x == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/error.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/error.pass.cpp
new file mode 100644
index 0000000..491e5e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/error.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const E& error() const & noexcept;
+// constexpr E& error() & noexcept;
+// constexpr E&& error() && noexcept;
+// constexpr const E&& error() const && noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept ErrorNoexcept =
+    requires(T t) {
+      { std::forward<T>(t).error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+
+static_assert(ErrorNoexcept<std::expected<int, int>&>);
+static_assert(ErrorNoexcept<const std::expected<int, int>&>);
+static_assert(ErrorNoexcept<std::expected<int, int>&&>);
+static_assert(ErrorNoexcept<const std::expected<int, int>&&>);
+
+constexpr bool test() {
+  // non-const &
+  {
+    std::expected<int, int> e(std::unexpect, 5);
+    decltype(auto) x = e.error();
+    static_assert(std::same_as<decltype(x), int&>);
+    assert(x == 5);
+  }
+
+  // const &
+  {
+    const std::expected<int, int> e(std::unexpect, 5);
+    decltype(auto) x = e.error();
+    static_assert(std::same_as<decltype(x), const int&>);
+    assert(x == 5);
+  }
+
+  // non-const &&
+  {
+    std::expected<int, int> e(std::unexpect, 5);
+    decltype(auto) x = std::move(e).error();
+    static_assert(std::same_as<decltype(x), int&&>);
+    assert(x == 5);
+  }
+
+  // const &&
+  {
+    const std::expected<int, int> e(std::unexpect, 5);
+    decltype(auto) x = std::move(e).error();
+    static_assert(std::same_as<decltype(x), const int&&>);
+    assert(x == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/has_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/has_value.pass.cpp
new file mode 100644
index 0000000..27d657a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/has_value.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr bool has_value() const noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept HasValueNoexcept =
+    requires(T t) {
+      { t.has_value() } noexcept;
+    };
+
+struct Foo {};
+static_assert(!HasValueNoexcept<Foo>);
+
+static_assert(HasValueNoexcept<std::expected<int, int>>);
+static_assert(HasValueNoexcept<const std::expected<int, int>>);
+
+constexpr bool test() {
+  // has_value
+  {
+    const std::expected<int, int> e(5);
+    assert(e.has_value());
+  }
+
+  // !has_value
+  {
+    const std::expected<int, int> e(std::unexpect, 5);
+    assert(!e.has_value());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/value.pass.cpp
new file mode 100644
index 0000000..718c307
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/value.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const T& value() const &;
+// constexpr T& value() &;
+// constexpr T&& value() &&;
+// constexpr const T&& value() const &&;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+constexpr bool test() {
+  // non-const &
+  {
+    std::expected<int, int> e(5);
+    decltype(auto) x = e.value();
+    static_assert(std::same_as<decltype(x), int&>);
+    assert(&x == &(*e));
+    assert(x == 5);
+  }
+
+  // const &
+  {
+    const std::expected<int, int> e(5);
+    decltype(auto) x = e.value();
+    static_assert(std::same_as<decltype(x), const int&>);
+    assert(&x == &(*e));
+    assert(x == 5);
+  }
+
+  // non-const &&
+  {
+    std::expected<int, int> e(5);
+    decltype(auto) x = std::move(e).value();
+    static_assert(std::same_as<decltype(x), int&&>);
+    assert(&x == &(*e));
+    assert(x == 5);
+  }
+
+  // const &&
+  {
+    const std::expected<int, int> e(5);
+    decltype(auto) x = std::move(e).value();
+    static_assert(std::same_as<decltype(x), const int&&>);
+    assert(&x == &(*e));
+    assert(x == 5);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+  // int
+  {
+    const std::expected<int, int> e(std::unexpect, 5);
+    try {
+      (void) e.value();
+      assert(false);
+    } catch (const std::bad_expected_access<int>& ex) {
+      assert(ex.error() == 5);
+    }
+  }
+
+  // MoveOnly
+  {
+    std::expected<int, MoveOnly> e(std::unexpect, 5);
+    try {
+      (void) std::move(e).value();
+      assert(false);
+    } catch (const std::bad_expected_access<MoveOnly>& ex) {
+      assert(ex.error() == 5);
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/value_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/value_or.pass.cpp
new file mode 100644
index 0000000..fa05a13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/observers/value_or.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class U> constexpr T value_or(U&& v) const &;
+// template<class U> constexpr T value_or(U&& v) &&;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+constexpr bool test() {
+  // const &, has_value()
+  {
+    const std::expected<int, int> e(5);
+    std::same_as<int> decltype(auto) x = e.value_or(10);
+    assert(x == 5);
+  }
+
+  // const &, !has_value()
+  {
+    const std::expected<int, int> e(std::unexpect, 5);
+    std::same_as<int> decltype(auto) x = e.value_or(10);
+    assert(x == 10);
+  }
+
+  // &&, has_value()
+  {
+    std::expected<MoveOnly, int> e(std::in_place, 5);
+    std::same_as<MoveOnly> decltype(auto) x = std::move(e).value_or(10);
+    assert(x == 5);
+  }
+
+  // &&, !has_value()
+  {
+    std::expected<MoveOnly, int> e(std::unexpect, 5);
+    std::same_as<MoveOnly> decltype(auto) x = std::move(e).value_or(10);
+    assert(x == 10);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp
new file mode 100644
index 0000000..3ea128a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/swap/free.swap.pass.cpp
@@ -0,0 +1,223 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, clang-15, apple-clang-14
+
+// friend constexpr void swap(expected& x, expected& y) noexcept(noexcept(x.swap(y)));
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+// Test Constraints:
+struct NotSwappable {
+  NotSwappable operator=(const NotSwappable&) = delete;
+};
+void swap(NotSwappable&, NotSwappable&) = delete;
+
+static_assert(std::is_swappable_v<std::expected<int, int>>);
+
+// !is_swappable_v<T>
+static_assert(!std::is_swappable_v<std::expected<NotSwappable, int>>);
+
+// !is_swappable_v<E>
+static_assert(!std::is_swappable_v<std::expected<int, NotSwappable>>);
+
+struct NotMoveContructible {
+  NotMoveContructible(NotMoveContructible&&) = delete;
+  friend void swap(NotMoveContructible&, NotMoveContructible&) {}
+};
+
+// !is_move_constructible_v<T>
+static_assert(!std::is_swappable_v<std::expected<NotMoveContructible, int>>);
+
+// !is_move_constructible_v<E>
+static_assert(!std::is_swappable_v<std::expected<int, NotMoveContructible>>);
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow&&) noexcept(false);
+  friend void swap(MoveMayThrow&, MoveMayThrow&) noexcept {}
+};
+
+// !is_nothrow_move_constructible_v<T> && is_nothrow_move_constructible_v<E>
+static_assert(std::is_swappable_v<std::expected<MoveMayThrow, int>>);
+
+// is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(std::is_swappable_v<std::expected<int, MoveMayThrow>>);
+
+// !is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_swappable_v<std::expected<MoveMayThrow, MoveMayThrow>>);
+
+// Test noexcept
+static_assert(std::is_nothrow_swappable_v<std::expected<int, int>>);
+
+// !is_nothrow_move_constructible_v<T>
+static_assert(!std::is_nothrow_swappable_v<std::expected<MoveMayThrow, int>>);
+
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_nothrow_swappable_v<std::expected<int, MoveMayThrow>>);
+
+struct SwapMayThrow {
+  friend void swap(SwapMayThrow&, SwapMayThrow&) noexcept(false) {}
+};
+
+// !is_nothrow_swappable_v<T>
+static_assert(!std::is_nothrow_swappable_v<std::expected<SwapMayThrow, int>>);
+
+// !is_nothrow_swappable_v<E>
+static_assert(!std::is_nothrow_swappable_v<std::expected<int, SwapMayThrow>>);
+
+constexpr bool test() {
+  // this->has_value() && rhs.has_value()
+  {
+    std::expected<ADLSwap, int> x(std::in_place, 5);
+    std::expected<ADLSwap, int> y(std::in_place, 10);
+    swap(x, y);
+
+    assert(x.has_value());
+    assert(x->i == 10);
+    assert(x->adlSwapCalled);
+    assert(y.has_value());
+    assert(y->i == 5);
+    assert(y->adlSwapCalled);
+  }
+
+  // !this->has_value() && !rhs.has_value()
+  {
+    std::expected<int, ADLSwap> x(std::unexpect, 5);
+    std::expected<int, ADLSwap> y(std::unexpect, 10);
+    swap(x, y);
+
+    assert(!x.has_value());
+    assert(x.error().i == 10);
+    assert(x.error().adlSwapCalled);
+    assert(!y.has_value());
+    assert(y.error().i == 5);
+    assert(y.error().adlSwapCalled);
+  }
+
+  // this->has_value() && !rhs.has_value()
+  // && is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<true>> e1(std::in_place, 5);
+    std::expected<TrackedMove<true>, TrackedMove<true>> e2(std::unexpect, 10);
+
+    swap(e1, e2);
+
+    assert(!e1.has_value());
+    assert(e1.error().i == 10);
+    assert(e2.has_value());
+    assert(e2->i == 5);
+
+    assert(e1.error().numberOfMoves == 2);
+    assert(!e1.error().swapCalled);
+    assert(e2->numberOfMoves == 1);
+    assert(!e2->swapCalled);
+  }
+
+  // this->has_value() && !rhs.has_value()
+  // && !is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<false>> e1(std::in_place, 5);
+    std::expected<TrackedMove<true>, TrackedMove<false>> e2(std::unexpect, 10);
+
+    e1.swap(e2);
+
+    assert(!e1.has_value());
+    assert(e1.error().i == 10);
+    assert(e2.has_value());
+    assert(e2->i == 5);
+
+    assert(e1.error().numberOfMoves == 1);
+    assert(!e1.error().swapCalled);
+    assert(e2->numberOfMoves == 2);
+    assert(!e2->swapCalled);
+  }
+
+  // !this->has_value() && rhs.has_value()
+  // && is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<true>> e1(std::unexpect, 10);
+    std::expected<TrackedMove<true>, TrackedMove<true>> e2(std::in_place, 5);
+
+    swap(e1, e2);
+
+    assert(e1.has_value());
+    assert(e1->i == 5);
+    assert(!e2.has_value());
+    assert(e2.error().i == 10);
+
+    assert(e1->numberOfMoves == 1);
+    assert(!e1->swapCalled);
+    assert(e2.error().numberOfMoves == 2);
+    assert(!e2.error().swapCalled);
+  }
+
+  // !this->has_value() && rhs.has_value()
+  // && !is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<false>> e1(std::unexpect, 10);
+    std::expected<TrackedMove<true>, TrackedMove<false>> e2(std::in_place, 5);
+
+    swap(e1, e2);
+
+    assert(e1.has_value());
+    assert(e1->i == 5);
+    assert(!e2.has_value());
+    assert(e2.error().i == 10);
+
+    assert(e1->numberOfMoves == 2);
+    assert(!e1->swapCalled);
+    assert(e2.error().numberOfMoves == 1);
+    assert(!e2.error().swapCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  // !e1.has_value() && e2.has_value()
+  {
+    std::expected<ThrowOnMoveConstruct, int> e1(std::unexpect, 5);
+    std::expected<ThrowOnMoveConstruct, int> e2(std::in_place);
+    try {
+      swap(e1, e2);
+      assert(false);
+    } catch (Except) {
+      assert(!e1.has_value());
+      assert(e1.error() == 5);
+    }
+  }
+
+  // e1.has_value() && !e2.has_value()
+  {
+    std::expected<int, ThrowOnMoveConstruct> e1(5);
+    std::expected<int, ThrowOnMoveConstruct> e2(std::unexpect);
+    try {
+      swap(e1, e2);
+      assert(false);
+    } catch (Except) {
+      assert(e1.has_value());
+      assert(*e1 == 5);
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/swap/member.swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/swap/member.swap.pass.cpp
new file mode 100644
index 0000000..d2d4a09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.expected/swap/member.swap.pass.cpp
@@ -0,0 +1,239 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr void swap(expected& rhs) noexcept(see below);
+//
+// Constraints:
+// is_swappable_v<T> is true and
+// is_swappable_v<E> is true and
+// is_move_constructible_v<T> && is_move_constructible_v<E> is true, and
+// is_nothrow_move_constructible_v<T> || is_nothrow_move_constructible_v<E> is true.
+//
+// Throws: Any exception thrown by the expressions in the Effects.
+// Remarks: The exception specification is equivalent to:
+// is_nothrow_move_constructible_v<T> && is_nothrow_swappable_v<T> &&
+// is_nothrow_move_constructible_v<E> && is_nothrow_swappable_v<E>
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+// Test Constraints:
+template <class T, class E>
+concept HasMemberSwap = requires(std::expected<T, E> x, std::expected<T, E> y) { x.swap(y); };
+
+static_assert(HasMemberSwap<int, int>);
+
+struct NotSwappable {};
+void swap(NotSwappable&, NotSwappable&) = delete;
+
+// !is_swappable_v<T>
+static_assert(!HasMemberSwap<NotSwappable, int>);
+
+// !is_swappable_v<E>
+static_assert(!HasMemberSwap<int, NotSwappable>);
+
+struct NotMoveContructible {
+  NotMoveContructible(NotMoveContructible&&) = delete;
+  friend void swap(NotMoveContructible&, NotMoveContructible&) {}
+};
+
+// !is_move_constructible_v<T>
+static_assert(!HasMemberSwap<NotMoveContructible, int>);
+
+// !is_move_constructible_v<E>
+static_assert(!HasMemberSwap<int, NotMoveContructible>);
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow&&) noexcept(false);
+  friend void swap(MoveMayThrow&, MoveMayThrow&) noexcept {}
+};
+
+// !is_nothrow_move_constructible_v<T> && is_nothrow_move_constructible_v<E>
+static_assert(HasMemberSwap<MoveMayThrow, int>);
+
+// is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(HasMemberSwap<int, MoveMayThrow>);
+
+// !is_nothrow_move_constructible_v<T> && !is_nothrow_move_constructible_v<E>
+static_assert(!HasMemberSwap<MoveMayThrow, MoveMayThrow>);
+
+// Test noexcept
+template <class T, class E>
+concept MemberSwapNoexcept =
+    requires(std::expected<T, E> x, std::expected<T, E> y) {
+      { x.swap(y) } noexcept;
+    };
+
+static_assert(MemberSwapNoexcept<int, int>);
+
+// !is_nothrow_move_constructible_v<T>
+static_assert(!MemberSwapNoexcept<MoveMayThrow, int>);
+
+// !is_nothrow_move_constructible_v<E>
+static_assert(!MemberSwapNoexcept<int, MoveMayThrow>);
+
+struct SwapMayThrow {
+  friend void swap(SwapMayThrow&, SwapMayThrow&) noexcept(false) {}
+};
+
+// !is_nothrow_swappable_v<T>
+static_assert(!MemberSwapNoexcept<SwapMayThrow, int>);
+
+// !is_nothrow_swappable_v<E>
+static_assert(!MemberSwapNoexcept<int, SwapMayThrow>);
+
+constexpr bool test() {
+  // this->has_value() && rhs.has_value()
+  {
+    std::expected<ADLSwap, int> x(std::in_place, 5);
+    std::expected<ADLSwap, int> y(std::in_place, 10);
+    x.swap(y);
+
+    assert(x.has_value());
+    assert(x->i == 10);
+    assert(x->adlSwapCalled);
+    assert(y.has_value());
+    assert(y->i == 5);
+    assert(y->adlSwapCalled);
+  }
+
+  // !this->has_value() && !rhs.has_value()
+  {
+    std::expected<int, ADLSwap> x(std::unexpect, 5);
+    std::expected<int, ADLSwap> y(std::unexpect, 10);
+    x.swap(y);
+
+    assert(!x.has_value());
+    assert(x.error().i == 10);
+    assert(x.error().adlSwapCalled);
+    assert(!y.has_value());
+    assert(y.error().i == 5);
+    assert(y.error().adlSwapCalled);
+  }
+
+  // this->has_value() && !rhs.has_value()
+  // && is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<true>> e1(std::in_place, 5);
+    std::expected<TrackedMove<true>, TrackedMove<true>> e2(std::unexpect, 10);
+
+    e1.swap(e2);
+
+    assert(!e1.has_value());
+    assert(e1.error().i == 10);
+    assert(e2.has_value());
+    assert(e2->i == 5);
+
+    assert(e1.error().numberOfMoves == 2);
+    assert(!e1.error().swapCalled);
+    assert(e2->numberOfMoves == 1);
+    assert(!e2->swapCalled);
+  }
+
+  // this->has_value() && !rhs.has_value()
+  // && !is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<false>> e1(std::in_place, 5);
+    std::expected<TrackedMove<true>, TrackedMove<false>> e2(std::unexpect, 10);
+
+    e1.swap(e2);
+
+    assert(!e1.has_value());
+    assert(e1.error().i == 10);
+    assert(e2.has_value());
+    assert(e2->i == 5);
+
+    assert(e1.error().numberOfMoves == 1);
+    assert(!e1.error().swapCalled);
+    assert(e2->numberOfMoves == 2);
+    assert(!e2->swapCalled);
+  }
+
+  // !this->has_value() && rhs.has_value()
+  // && is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<true>> e1(std::unexpect, 10);
+    std::expected<TrackedMove<true>, TrackedMove<true>> e2(std::in_place, 5);
+
+    e1.swap(e2);
+
+    assert(e1.has_value());
+    assert(e1->i == 5);
+    assert(!e2.has_value());
+    assert(e2.error().i == 10);
+
+    assert(e1->numberOfMoves == 1);
+    assert(!e1->swapCalled);
+    assert(e2.error().numberOfMoves == 2);
+    assert(!e2.error().swapCalled);
+  }
+
+  // !this->has_value() && rhs.has_value()
+  // && !is_nothrow_move_constructible_v<E>
+  {
+    std::expected<TrackedMove<true>, TrackedMove<false>> e1(std::unexpect, 10);
+    std::expected<TrackedMove<true>, TrackedMove<false>> e2(std::in_place, 5);
+
+    e1.swap(e2);
+
+    assert(e1.has_value());
+    assert(e1->i == 5);
+    assert(!e2.has_value());
+    assert(e2.error().i == 10);
+
+    assert(e1->numberOfMoves == 2);
+    assert(!e1->swapCalled);
+    assert(e2.error().numberOfMoves == 1);
+    assert(!e2.error().swapCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  // !e1.has_value() && e2.has_value()
+  {
+    std::expected<ThrowOnMoveConstruct, int> e1(std::unexpect, 5);
+    std::expected<ThrowOnMoveConstruct, int> e2(std::in_place);
+    try {
+      e1.swap(e2);
+      assert(false);
+    } catch (Except) {
+      assert(!e1.has_value());
+      assert(e1.error() == 5);
+    }
+  }
+
+  // e1.has_value() && !e2.has_value()
+  {
+    std::expected<int, ThrowOnMoveConstruct> e1(5);
+    std::expected<int, ThrowOnMoveConstruct> e2(std::unexpect);
+    try {
+      e1.swap(e2);
+      assert(false);
+    } catch (Except) {
+      assert(e1.has_value());
+      assert(*e1 == 5);
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/assign/assign.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/assign/assign.copy.pass.cpp
new file mode 100644
index 0000000..74f46f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/assign/assign.copy.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr unexpected& operator=(const unexpected&) = default;
+
+#include <cassert>
+#include <expected>
+
+struct Error {
+  int i;
+  constexpr Error(int ii) : i(ii) {}
+};
+
+constexpr bool test() {
+  std::unexpected<Error> unex1(4);
+  const std::unexpected<Error> unex2(5);
+  unex1 = unex2;
+  assert(unex1.error().i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/assign/assign.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/assign/assign.move.pass.cpp
new file mode 100644
index 0000000..31573be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/assign/assign.move.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr unexpected& operator=(unexpected&&) = default;
+
+#include <cassert>
+#include <expected>
+#include <utility>
+
+struct Error {
+  int i;
+  constexpr Error(int ii) : i(ii) {}
+  constexpr Error& operator=(Error&& other) {
+    i       = other.i;
+    other.i = 0;
+    return *this;
+  }
+};
+
+constexpr bool test() {
+  std::unexpected<Error> unex1(4);
+  std::unexpected<Error> unex2(5);
+  unex1 = std::move(unex2);
+  assert(unex1.error().i == 5);
+  assert(unex2.error().i == 0);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctad.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctad.compile.pass.cpp
new file mode 100644
index 0000000..eb23a2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctad.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class E> unexpected(E) -> unexpected<E>;
+
+#include <concepts>
+#include <expected>
+
+struct Foo{};
+
+static_assert(std::same_as<decltype(std::unexpected(5)), std::unexpected<int>>);
+static_assert(std::same_as<decltype(std::unexpected(Foo{})), std::unexpected<Foo>>);
+static_assert(std::same_as<decltype(std::unexpected(std::unexpected<int>(5))), std::unexpected<int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.copy.pass.cpp
new file mode 100644
index 0000000..9a66002
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.copy.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr unexpected(const unexpected&) = default;
+
+#include <cassert>
+#include <expected>
+
+struct Error {
+  int i;
+  constexpr Error(int ii) : i(ii) {}
+};
+
+constexpr bool test() {
+  const std::unexpected<Error> unex(5);
+  auto unex2 = unex;
+  assert(unex2.error().i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.error.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.error.pass.cpp
new file mode 100644
index 0000000..86e903a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.error.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class Err = E>
+//   constexpr explicit unexpected(Err&& e);
+//
+// Constraints:
+// - is_same_v<remove_cvref_t<Err>, unexpected> is false; and
+// - is_same_v<remove_cvref_t<Err>, in_place_t> is false; and
+// - is_constructible_v<E, Err> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<Err>(e).
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(std::constructible_from<std::unexpected<int>, int>);
+
+// is_same_v<remove_cvref_t<Err>, unexpected>
+struct CstrFromUnexpected {
+  CstrFromUnexpected(CstrFromUnexpected const&) = delete;
+  CstrFromUnexpected(std::unexpected<CstrFromUnexpected> const&);
+};
+static_assert(!std::constructible_from<std::unexpected<CstrFromUnexpected>, std::unexpected<CstrFromUnexpected>>);
+
+// is_same_v<remove_cvref_t<Err>, in_place_t>
+struct CstrFromInplace {
+  CstrFromInplace(std::in_place_t);
+};
+static_assert(!std::constructible_from<std::unexpected<CstrFromInplace>, std::in_place_t>);
+
+// !is_constructible_v<E, Err>
+struct Foo {};
+static_assert(!std::constructible_from<std::unexpected<Foo>, int>);
+
+// test explicit
+static_assert(std::convertible_to<int, int>);
+static_assert(!std::convertible_to<int, std::unexpected<int>>);
+
+struct Error {
+  int i;
+  constexpr Error(int ii) : i(ii) {}
+  constexpr Error(const Error& other) : i(other.i) {}
+  constexpr Error(Error&& other) : i(other.i) { other.i = 0; }
+  Error(std::initializer_list<Error>) { assert(false); }
+};
+
+constexpr bool test() {
+  // lvalue
+  {
+    Error e(5);
+    std::unexpected<Error> unex(e);
+    assert(unex.error().i == 5);
+    assert(e.i == 5);
+  }
+
+  // rvalue
+  {
+    Error e(5);
+    std::unexpected<Error> unex(std::move(e));
+    assert(unex.error().i == 5);
+    assert(e.i == 0);
+  }
+
+  // Direct-non-list-initializes: does not trigger initializer_list overload
+  {
+    Error e(5);
+    [[maybe_unused]] std::unexpected<Error> unex(e);
+  }
+
+  // Test default template argument.
+  // Without it, the template parameter cannot be deduced from an initializer list
+  {
+    struct Bar {
+      int i;
+      int j;
+      constexpr Bar(int ii, int jj) : i(ii), j(jj) {}
+    };
+    std::unexpected<Bar> ue({5, 6});
+    assert(ue.error().i == 5);
+    assert(ue.error().j == 6);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing() = default;
+    Throwing(const Throwing&) { throw Except{}; }
+  };
+
+  Throwing t;
+  try {
+    std::unexpected<Throwing> u(t);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.inplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.inplace.pass.cpp
new file mode 100644
index 0000000..5cad5c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.inplace.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class... Args>
+//   constexpr explicit unexpected(in_place_t, Args&&... args);
+//
+// Constraints: is_constructible_v<E, Args...> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<Args>(args)....
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(std::constructible_from<std::unexpected<int>, std::in_place_t, int>);
+
+// !is_constructible_v<E, Args...>
+struct Foo {};
+static_assert(!std::constructible_from<std::unexpected<Foo>, std::in_place_t, int>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+
+static_assert(ImplicitlyConstructible<int, int>);
+static_assert(!ImplicitlyConstructible<std::unexpected<int>, std::in_place_t, int>);
+
+struct Arg {
+  int i;
+  constexpr Arg(int ii) : i(ii) {}
+  constexpr Arg(const Arg& other) : i(other.i) {}
+  constexpr Arg(Arg&& other) : i(other.i) { other.i = 0; }
+};
+
+struct Error {
+  Arg arg;
+  constexpr explicit Error(const Arg& a) : arg(a) {}
+  constexpr explicit Error(Arg&& a) : arg(std::move(a)) {}
+  Error(std::initializer_list<Error>) :arg(0){ assert(false); }
+};
+
+constexpr bool test() {
+  // lvalue
+  {
+    Arg a{5};
+    std::unexpected<Error> unex(std::in_place, a);
+    assert(unex.error().arg.i == 5);
+    assert(a.i == 5);
+  }
+
+  // rvalue
+  {
+    Arg a{5};
+    std::unexpected<Error> unex(std::in_place, std::move(a));
+    assert(unex.error().arg.i == 5);
+    assert(a.i == 0);
+  }
+
+  // Direct-non-list-initializes: does not trigger initializer_list overload
+  {
+    Error e(5);
+    [[maybe_unused]] std::unexpected<Error> unex(std::in_place, e);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; }
+  };
+
+  try {
+    std::unexpected<Throwing> u(std::in_place, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.inplace_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.inplace_init_list.pass.cpp
new file mode 100644
index 0000000..ee9a228
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.inplace_init_list.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class U, class... Args>
+//   constexpr explicit unexpected(in_place_t, initializer_list<U> il, Args&&... args);
+//
+// Constraints: is_constructible_v<E, initializer_list<U>&, Args...> is true.
+//
+// Effects: Direct-non-list-initializes unex with il, std::forward<Args>(args)....
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Arg {
+  int i;
+  constexpr Arg(int ii) : i(ii) {}
+  constexpr Arg(const Arg& other) : i(other.i) {}
+  constexpr Arg(Arg&& other) : i(other.i) { other.i = 0; }
+};
+
+struct Error {
+  std::initializer_list<int> list;
+  Arg arg;
+  constexpr explicit Error(std::initializer_list<int> l, const Arg& a) : list(l), arg(a) {}
+  constexpr explicit Error(std::initializer_list<int> l, Arg&& a) : list(l), arg(std::move(a)) {}
+};
+
+// Test Constraints:
+static_assert(std::constructible_from<std::unexpected<Error>, std::in_place_t, std::initializer_list<int>, Arg>);
+
+// !is_constructible_v<E, initializer_list<U>&, Args...>
+struct Foo {};
+static_assert(!std::constructible_from<std::unexpected<Error>, std::in_place_t, std::initializer_list<double>, Arg>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+
+static_assert(ImplicitlyConstructible<int, int>);
+static_assert(!ImplicitlyConstructible<std::unexpected<Error>, std::in_place_t, std::initializer_list<int>, Arg>);
+
+constexpr bool test() {
+  // lvalue
+  {
+    Arg a{5};
+    auto l = {1, 2, 3};
+    std::unexpected<Error> unex(std::in_place, l, a);
+    assert(unex.error().arg.i == 5);
+    assert(std::ranges::equal(unex.error().list, l));
+    assert(a.i == 5);
+  }
+
+  // rvalue
+  {
+    Arg a{5};
+    auto l = {1, 2, 3};
+    std::unexpected<Error> unex(std::in_place, l, std::move(a));
+    assert(unex.error().arg.i == 5);
+    assert(std::ranges::equal(unex.error().list, l));
+    assert(a.i == 0);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(std::initializer_list<int>, int) { throw Except{}; }
+  };
+
+  try {
+    std::unexpected<Throwing> u(std::in_place, {1, 2}, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.move.pass.cpp
new file mode 100644
index 0000000..3028dfa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/ctor/ctor.move.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr unexpected(unexpected&&) = default;
+
+#include <cassert>
+#include <expected>
+#include <utility>
+
+struct Error {
+  int i;
+  constexpr Error(int ii) : i(ii) {}
+  constexpr Error(Error&& other) : i(other.i) {other.i = 0;}
+};
+
+constexpr bool test() {
+  std::unexpected<Error> unex(5);
+  auto unex2 = std::move(unex);
+  assert(unex2.error().i == 5);
+  assert(unex.error().i == 0);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/equality.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/equality.pass.cpp
new file mode 100644
index 0000000..4d249df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/equality.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class E2>
+// friend constexpr bool operator==(const unexpected& x, const unexpected<E2>& y);
+//
+// Mandates: The expression x.error() == y.error() is well-formed and its result is convertible to bool.
+//
+// Returns: x.error() == y.error().
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+struct Error{
+  int i;
+  friend constexpr bool operator==(const Error&, const Error&) = default;
+};
+
+constexpr bool test() {
+  std::unexpected<Error> unex1(Error{2});
+  std::unexpected<Error> unex2(Error{3});
+  std::unexpected<Error> unex3(Error{2});
+  assert(unex1 == unex3);
+  assert(unex1 != unex2);
+  assert(unex2 != unex3);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.const_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.const_ref.pass.cpp
new file mode 100644
index 0000000..8cfe555
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.const_ref.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const E& error() const & noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+template <class T>
+concept ErrorNoexcept =
+    requires(const T& t) {
+      { t.error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+static_assert(ErrorNoexcept<std::unexpected<int>>);
+
+constexpr bool test() {
+  const std::unexpected<int> unex(5);
+  decltype(auto) i = unex.error();
+  static_assert(std::same_as<decltype(i), const int&>);
+  assert(i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.const_ref_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.const_ref_ref.pass.cpp
new file mode 100644
index 0000000..ffd8ed8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.const_ref_ref.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const E&& error() const && noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+template <class T>
+concept ErrorNoexcept =
+    requires(const T&& t) {
+      { std::move(t).error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+static_assert(ErrorNoexcept<std::unexpected<int>>);
+
+constexpr bool test() {
+  const std::unexpected<int> unex(5);
+  decltype(auto) i = std::move(unex).error();
+  static_assert(std::same_as<decltype(i), const int&&>);
+  assert(i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.ref.pass.cpp
new file mode 100644
index 0000000..4f22eb4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.ref.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr E& error() & noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+template <class T>
+concept ErrorNoexcept =
+    requires(T& t) {
+      { t.error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+static_assert(ErrorNoexcept<std::unexpected<int>>);
+
+constexpr bool test() {
+  std::unexpected<int> unex(5);
+  decltype(auto) i = unex.error();
+  static_assert(std::same_as<decltype(i), int&>);
+  assert(i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.ref_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.ref_ref.pass.cpp
new file mode 100644
index 0000000..415435b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/observer/error.ref_ref.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr E&& error() && noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+template <class T>
+concept ErrorNoexcept =
+    requires(T&& t) {
+      { std::move(t).error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+static_assert(ErrorNoexcept<std::unexpected<int>>);
+
+constexpr bool test() {
+  std::unexpected<int> unex(5);
+  decltype(auto) i = std::move(unex).error();
+  static_assert(std::same_as<decltype(i), int&&>);
+  assert(i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/swap/swap.free.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/swap/swap.free.pass.cpp
new file mode 100644
index 0000000..ac0fb82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/swap/swap.free.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// friend constexpr void swap(unexpected& x, unexpected& y) noexcept(noexcept(x.swap(y)));
+//
+// Constraints: is_swappable_v<E> is true.
+//
+// Effects: Equivalent to x.swap(y).
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+// test noexcept
+struct NoexceptSwap {
+  friend void swap(NoexceptSwap&, NoexceptSwap&) noexcept;
+};
+
+struct MayThrowSwap {
+  friend void swap(MayThrowSwap&, MayThrowSwap&);
+};
+
+template <class T>
+concept ADLSwapNoexcept =
+    requires(T& t1, T& t2) {
+      { swap(t1, t2) } noexcept;
+    };
+
+static_assert(ADLSwapNoexcept<std::unexpected<NoexceptSwap>>);
+static_assert(!ADLSwapNoexcept<std::unexpected<MayThrowSwap>>);
+
+// test constraint
+struct NonSwappable {
+  NonSwappable& operator=(const NonSwappable&) = delete;
+};
+
+static_assert(std::is_swappable_v<std::unexpected<int>>);
+static_assert(std::is_swappable_v<std::unexpected<MayThrowSwap>>);
+static_assert(!std::is_swappable_v<std::unexpected<NonSwappable>>);
+
+struct ADLSwap {
+  constexpr ADLSwap(int ii) : i(ii) {}
+  ADLSwap& operator=(const ADLSwap&) = delete;
+  int i;
+  constexpr friend void swap(ADLSwap& x, ADLSwap& y) { std::swap(x.i, y.i); }
+};
+
+constexpr bool test() {
+  std::unexpected<ADLSwap> unex1(5);
+  std::unexpected<ADLSwap> unex2(6);
+  swap(unex1, unex2);
+  assert(unex1.error().i == 6);
+  assert(unex2.error().i == 5);
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/swap/swap.member.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/swap/swap.member.pass.cpp
new file mode 100644
index 0000000..d77870e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.unexpected/swap/swap.member.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr void swap(unexpected& other) noexcept(is_nothrow_swappable_v<E>);
+//
+// Mandates: is_swappable_v<E> is true.
+//
+// Effects: Equivalent to: using std::swap; swap(unex, other.unex);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <utility>
+
+// test noexcept
+struct NoexceptSwap {
+  friend void swap(NoexceptSwap&, NoexceptSwap&) noexcept;
+};
+
+struct MayThrowSwap {
+  friend void swap(MayThrowSwap&, MayThrowSwap&);
+};
+
+template <class T>
+concept MemberSwapNoexcept =
+    requires(T& t1, T& t2) {
+      { t1.swap(t2) } noexcept;
+    };
+
+static_assert(MemberSwapNoexcept<std::unexpected<NoexceptSwap>>);
+static_assert(!MemberSwapNoexcept<std::unexpected<MayThrowSwap>>);
+
+struct ADLSwap {
+  constexpr ADLSwap(int ii) : i(ii) {}
+  ADLSwap& operator=(const ADLSwap&) = delete;
+  int i;
+  constexpr friend void swap(ADLSwap& x, ADLSwap& y) { std::swap(x.i, y.i); }
+};
+
+constexpr bool test() {
+  // using std::swap;
+  {
+    std::unexpected<int> unex1(5);
+    std::unexpected<int> unex2(6);
+    unex1.swap(unex2);
+    assert(unex1.error() == 6);
+    assert(unex2.error() == 5);
+  }
+
+  // adl swap
+  {
+    std::unexpected<ADLSwap> unex1(5);
+    std::unexpected<ADLSwap> unex2(6);
+    unex1.swap(unex2);
+    assert(unex1.error().i == 6);
+    assert(unex2.error().i == 5);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp
new file mode 100644
index 0000000..00af326
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.copy.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr expected& operator=(const expected& rhs);
+//
+// Effects:
+// - If this->has_value() && rhs.has_value() is true, no effects.
+// - Otherwise, if this->has_value() is true, equivalent to: construct_at(addressof(unex), rhs.unex); has_val = false;
+// - Otherwise, if rhs.has_value() is true, destroys unex and sets has_val to true.
+// - Otherwise, equivalent to unex = rhs.error().
+//
+// Returns: *this.
+//
+// Remarks: This operator is defined as deleted unless is_copy_assignable_v<E> is true and is_copy_constructible_v<E> is true.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotCopyConstructible {
+  NotCopyConstructible(const NotCopyConstructible&)            = delete;
+  NotCopyConstructible& operator=(const NotCopyConstructible&) = default;
+};
+
+struct NotCopyAssignable {
+  NotCopyAssignable(const NotCopyAssignable&)            = default;
+  NotCopyAssignable& operator=(const NotCopyAssignable&) = delete;
+};
+
+// Test constraints
+static_assert(std::is_copy_assignable_v<std::expected<void, int>>);
+
+// !is_copy_assignable_v<E>
+static_assert(!std::is_copy_assignable_v<std::expected<void, NotCopyAssignable>>);
+
+// !is_copy_constructible_v<E>
+static_assert(!std::is_copy_assignable_v<std::expected<void, NotCopyConstructible>>);
+
+constexpr bool test() {
+  // If this->has_value() && rhs.has_value() is true, no effects.
+  {
+    std::expected<void, int> e1;
+    std::expected<void, int> e2;
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<void, int>&>);
+    assert(&x == &e1);
+    assert(e1.has_value());
+  }
+
+  // Otherwise, if this->has_value() is true, equivalent to: construct_at(addressof(unex), rhs.unex); has_val = false;
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e1;
+    std::expected<void, Traced> e2(std::unexpect, state, 5);
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e1);
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 5);
+
+    assert(state.copyCtorCalled);
+  }
+
+  // Otherwise, if rhs.has_value() is true, destroys unex and sets has_val to true.
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e1(std::unexpect, state, 5);
+    std::expected<void, Traced> e2;
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e1);
+    assert(e1.has_value());
+
+    assert(state.dtorCalled);
+  }
+
+  // Otherwise, equivalent to unex = rhs.error().
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e1(std::unexpect, state, 5);
+    std::expected<void, Traced> e2(std::unexpect, state, 10);
+    decltype(auto) x = (e1 = e2);
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e1);
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+
+    assert(state.copyAssignCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<void, ThrowOnCopyConstruct> e1(std::in_place);
+  std::expected<void, ThrowOnCopyConstruct> e2(std::unexpect);
+  try {
+    e1 = e2;
+    assert(false);
+  } catch (Except) {
+    assert(e1.has_value());
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp
new file mode 100644
index 0000000..878908d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.move.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr expected& operator=(expected&& rhs) noexcept(see below);
+//
+// Effects:
+// - If this->has_value() && rhs.has_value() is true, no effects.
+// - Otherwise, if this->has_value() is true, equivalent to:
+//   construct_at(addressof(unex), std::move(rhs.unex));
+//   has_val = false;
+// - Otherwise, if rhs.has_value() is true, destroys unex and sets has_val to true.
+// - Otherwise, equivalent to unex = std::move(rhs.error()).
+//
+// Returns: *this.
+//
+// Remarks: The exception specification is equivalent to is_nothrow_move_constructible_v<E> && is_nothrow_move_assignable_v<E>.
+//
+// This operator is defined as deleted unless is_move_constructible_v<E> is true and is_move_assignable_v<E> is true.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotMoveConstructible {
+  NotMoveConstructible(NotMoveConstructible&&)            = delete;
+  NotMoveConstructible& operator=(NotMoveConstructible&&) = default;
+};
+
+struct NotMoveAssignable {
+  NotMoveAssignable(NotMoveAssignable&&)            = default;
+  NotMoveAssignable& operator=(NotMoveAssignable&&) = delete;
+};
+
+// Test constraints
+static_assert(std::is_move_assignable_v<std::expected<void, int>>);
+
+// !is_move_assignable_v<E>
+static_assert(!std::is_move_assignable_v<std::expected<void, NotMoveAssignable>>);
+
+// !is_move_constructible_v<E>
+static_assert(!std::is_move_assignable_v<std::expected<void, NotMoveConstructible>>);
+
+// Test noexcept
+struct MoveCtorMayThrow {
+  MoveCtorMayThrow(MoveCtorMayThrow&&) noexcept(false) {}
+  MoveCtorMayThrow& operator=(MoveCtorMayThrow&&) noexcept = default;
+};
+
+struct MoveAssignMayThrow {
+  MoveAssignMayThrow(MoveAssignMayThrow&&) noexcept = default;
+  MoveAssignMayThrow& operator=(MoveAssignMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test noexcept
+static_assert(std::is_nothrow_move_assignable_v<std::expected<void, int>>);
+
+// !is_nothrow_move_assignable_v<E>
+static_assert(!std::is_nothrow_move_assignable_v<std::expected<void, MoveAssignMayThrow>>);
+
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_nothrow_move_assignable_v<std::expected<void, MoveCtorMayThrow>>);
+
+constexpr bool test() {
+  // If this->has_value() && rhs.has_value() is true, no effects.
+  {
+    std::expected<void, int> e1;
+    std::expected<void, int> e2;
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<void, int>&>);
+    assert(&x == &e1);
+    assert(e1.has_value());
+  }
+
+  // Otherwise, if this->has_value() is true, equivalent to:
+  // construct_at(addressof(unex), std::move(rhs.unex));
+  // has_val = false;
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e1;
+    std::expected<void, Traced> e2(std::unexpect, state, 5);
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e1);
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 5);
+
+    assert(state.moveCtorCalled);
+  }
+
+  // Otherwise, if rhs.has_value() is true, destroys unex and sets has_val to true.
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e1(std::unexpect, state, 5);
+    std::expected<void, Traced> e2;
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e1);
+    assert(e1.has_value());
+
+    assert(state.dtorCalled);
+  }
+
+  // Otherwise, equivalent to unex = rhs.error().
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e1(std::unexpect, state, 5);
+    std::expected<void, Traced> e2(std::unexpect, state, 10);
+    decltype(auto) x = (e1 = std::move(e2));
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e1);
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+
+    assert(state.moveAssignCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<void, ThrowOnMoveConstruct> e1(std::in_place);
+  std::expected<void, ThrowOnMoveConstruct> e2(std::unexpect);
+  try {
+    e1 = std::move(e2);
+    assert(false);
+  } catch (Except) {
+    assert(e1.has_value());
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp
new file mode 100644
index 0000000..3d8466d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.copy.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class G>
+//   constexpr expected& operator=(const unexpected<G>& e);
+//
+// Let GF be const G&
+//
+// Constraints: is_constructible_v<E, GF> is true and is_assignable_v<E&, GF> is true.
+//
+// Effects:
+// - If has_value() is true, equivalent to:
+//   construct_at(addressof(unex), std::forward<GF>(e.error()));
+//   has_val = false;
+// - Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+//
+// Returns: *this.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotCopyConstructible {
+  NotCopyConstructible(const NotCopyConstructible&)            = delete;
+  NotCopyConstructible& operator=(const NotCopyConstructible&) = default;
+};
+
+struct NotCopyAssignable {
+  NotCopyAssignable(const NotCopyAssignable&)            = default;
+  NotCopyAssignable& operator=(const NotCopyAssignable&) = delete;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow const&)            = default;
+  MoveMayThrow& operator=(const MoveMayThrow&) = default;
+  MoveMayThrow(MoveMayThrow&&) noexcept(false) {}
+  MoveMayThrow& operator=(MoveMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test constraints
+static_assert(std::is_assignable_v<std::expected<void, int>&, const std::unexpected<int>&>);
+
+// !is_constructible_v<E, GF>
+static_assert(
+    !std::is_assignable_v<std::expected<void, NotCopyConstructible>&, const std::unexpected<NotCopyConstructible>&>);
+
+// !is_assignable_v<E&, GF>
+static_assert(
+    !std::is_assignable_v<std::expected<void, NotCopyAssignable>&, const std::unexpected<NotCopyAssignable>&>);
+
+constexpr bool test() {
+  // - If has_value() is true, equivalent to:
+  //   construct_at(addressof(unex), std::forward<GF>(e.error()));
+  //   has_val = false;
+  {
+    Traced::state state{};
+    std::expected<void, Traced> e;
+    std::unexpected<Traced> un(std::in_place, state, 5);
+    decltype(auto) x = (e = un);
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e);
+    assert(!e.has_value());
+    assert(e.error().data_ == 5);
+
+    assert(state.copyCtorCalled);
+  }
+
+  // - Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+  {
+    Traced::state state1{};
+    Traced::state state2{};
+    std::expected<void, Traced> e(std::unexpect, state1, 5);
+    std::unexpected<Traced> un(std::in_place, state2, 10);
+    decltype(auto) x = (e = un);
+    static_assert(std::same_as<decltype(x), std::expected<void, Traced>&>);
+    assert(&x == &e);
+    assert(!e.has_value());
+    assert(e.error().data_ == 10);
+
+    assert(state1.copyAssignCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<void, ThrowOnCopyConstruct> e1(std::in_place);
+  std::unexpected<ThrowOnCopyConstruct> un(std::in_place);
+  try {
+    e1 = un;
+    assert(false);
+  } catch (Except) {
+    assert(e1.has_value());
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp
new file mode 100644
index 0000000..e07fb5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/assign.unexpected.move.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class G>
+//   constexpr expected& operator=(unexpected<G>&& e);
+//
+// Let GF be G
+// Constraints:
+// - is_constructible_v<E, GF> is true; and
+// - is_assignable_v<E&, GF> is true; and
+// - is_nothrow_constructible_v<E, GF> || is_nothrow_move_constructible_v<T> ||
+//   is_nothrow_move_constructible_v<E> is true.
+//
+// Effects:
+// - If has_value() is true, equivalent to:
+//   reinit-expected(unex, val, std::forward<GF>(e.error()));
+//   has_val = false;
+// - Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+// Returns: *this.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+struct NotMoveConstructible {
+  NotMoveConstructible(NotMoveConstructible&&)            = delete;
+  NotMoveConstructible& operator=(NotMoveConstructible&&) = default;
+};
+
+struct NotMoveAssignable {
+  NotMoveAssignable(NotMoveAssignable&&)            = default;
+  NotMoveAssignable& operator=(NotMoveAssignable&&) = delete;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow const&)            = default;
+  MoveMayThrow& operator=(const MoveMayThrow&) = default;
+  MoveMayThrow(MoveMayThrow&&) noexcept(false) {}
+  MoveMayThrow& operator=(MoveMayThrow&&) noexcept(false) { return *this; }
+};
+
+// Test constraints
+static_assert(std::is_assignable_v<std::expected<int, int>&, std::unexpected<int>&&>);
+
+// !is_constructible_v<E, GF>
+static_assert(
+    !std::is_assignable_v<std::expected<int, NotMoveConstructible>&, std::unexpected<NotMoveConstructible>&&>);
+
+// !is_assignable_v<E&, GF>
+static_assert(!std::is_assignable_v<std::expected<int, NotMoveAssignable>&, std::unexpected<NotMoveAssignable>&&>);
+
+template <bool moveNoexcept, bool convertNoexcept>
+struct MaybeNoexcept {
+  explicit MaybeNoexcept(int) noexcept(convertNoexcept);
+  MaybeNoexcept(MaybeNoexcept&&) noexcept(moveNoexcept);
+  MaybeNoexcept& operator=(MaybeNoexcept&&) = default;
+  MaybeNoexcept& operator=(int);
+};
+
+// !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<true, false>>&,
+                                   std::unexpected<int>&&>);
+
+// is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, true>>&,
+                                   std::unexpected<int>&&>);
+
+// !is_nothrow_constructible_v<E, GF> && is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(std::is_assignable_v<std::expected<MaybeNoexcept<true, true>, MaybeNoexcept<false, false>>&,
+                                   std::unexpected<int>&&>);
+
+// !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<T> &&
+// !is_nothrow_move_constructible_v<E>
+static_assert(!std::is_assignable_v<std::expected<MaybeNoexcept<false, false>, MaybeNoexcept<false, false>>&,
+                                    std::unexpected<int>&&>);
+
+constexpr bool test() {
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // is_nothrow_constructible_v<E, GF>
+  //
+  //  In this case, it should call the branch
+  //    destroy_at(addressof(oldval));
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, BothNoexcept> e(std::in_place, oldState, 5);
+    std::unexpected<int> un(10);
+    decltype(auto) x = (e = std::move(un));
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, BothNoexcept>&>);
+    assert(&x == &e);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e.error().movedFromInt);
+  }
+
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // !is_nothrow_constructible_v<E, GF> && is_nothrow_move_constructible_v<E>
+  //
+  //  In this case, it should call the branch
+  //  T tmp(std::forward<Args>(args)...);
+  //  destroy_at(addressof(oldval));
+  //  construct_at(addressof(newval), std::move(tmp));
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, MoveNoexceptConvThrow> e(std::in_place, oldState, 5);
+    std::unexpected<int> un(10);
+    decltype(auto) x = (e = std::move(un));
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, MoveNoexceptConvThrow>&>);
+    assert(&x == &e);
+
+    assert(!oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(!e.error().movedFromInt);
+    assert(e.error().movedFromTmp);
+  }
+
+  // - If has_value() is true, equivalent to:
+  //   reinit-expected(unex, val, std::forward<GF>(e.error()));
+  // !is_nothrow_constructible_v<E, GF> && !is_nothrow_move_constructible_v<E>
+  // is_nothrow_move_constructible_v<T>
+  //
+  //  In this case, it should call the branch
+  //  U tmp(std::move(oldval));
+  //  destroy_at(addressof(oldval));
+  //  try {
+  //    construct_at(addressof(newval), std::forward<Args>(args)...);
+  //  } catch (...) {
+  //    construct_at(addressof(oldval), std::move(tmp));
+  //    throw;
+  //  }
+  {
+    BothNoexcept::state oldState{};
+    std::expected<BothNoexcept, BothMayThrow> e(std::in_place, oldState, 5);
+    std::unexpected<int> un(10);
+    decltype(auto) x = (e = std::move(un));
+    static_assert(std::same_as<decltype(x), std::expected<BothNoexcept, BothMayThrow>&>);
+    assert(&x == &e);
+
+    assert(oldState.moveCtorCalled);
+    assert(oldState.dtorCalled);
+    assert(e.error().movedFromInt);
+  }
+
+  // Otherwise, equivalent to: unex = std::forward<GF>(e.error());
+  {
+    Traced::state oldState{};
+    Traced::state newState{};
+    std::expected<int, Traced> e1(std::unexpect, oldState, 5);
+    std::unexpected<Traced> e(std::in_place, newState, 10);
+    decltype(auto) x = (e1 = std::move(e));
+    static_assert(std::same_as<decltype(x), std::expected<int, Traced >&>);
+    assert(&x == &e1);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(oldState.moveAssignCalled);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  std::expected<void, ThrowOnMoveConstruct> e1(std::in_place);
+  std::unexpected<ThrowOnMoveConstruct> un(std::in_place);
+  try {
+    e1 = std::move(un);
+    assert(false);
+  } catch (Except) {
+    assert(e1.has_value());
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp
new file mode 100644
index 0000000..b3aa5f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/assign/emplace.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr void emplace() noexcept;
+//
+// Effects: If has_value() is false, destroys unex and sets has_val to true.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+template <class T>
+concept EmplaceNoexcept =
+    requires(T t) {
+      { t.emplace() } noexcept;
+    };
+static_assert(!EmplaceNoexcept<int>);
+
+static_assert(EmplaceNoexcept<std::expected<void, int>>);
+
+constexpr bool test() {
+  // has_value
+  {
+    std::expected<void, int> e;
+    e.emplace();
+    assert(e.has_value());
+  }
+
+  // !has_value
+  {
+    Traced::state state{};
+    std::expected<int, Traced> e(std::unexpect, state, 5);
+    e.emplace();
+
+    assert(state.dtorCalled);
+    assert(e.has_value());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.convert.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.convert.copy.pass.cpp
new file mode 100644
index 0000000..40f8efa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.convert.copy.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class U, class G>
+//   constexpr explicit(!is_convertible_v<const G&, E>) expected(const expected<U, G>& rhs);
+//
+// Let GF be const G&
+//
+// Constraints:
+// - is_void_v<U> is true; and
+// - is_constructible_v<E, GF> is true; and
+// - is_constructible_v<unexpected<E>, expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, expected<U, G>> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>> is false.
+//
+// Effects: If rhs.has_value() is false, direct-non-list-initializes unex with std::forward<GF>(rhs.error()).
+//
+// Postconditions: rhs.has_value() is unchanged; rhs.has_value() == this->has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test Constraints:
+template <class T1, class Err1, class T2, class Err2>
+concept canCstrFromExpected = std::is_constructible_v<std::expected<T1, Err1>, const std::expected<T2, Err2>&>;
+
+struct CtorFromInt {
+  CtorFromInt(int);
+};
+
+static_assert(canCstrFromExpected<void, CtorFromInt, void, int>);
+
+struct NoCtorFromInt {};
+
+// !is_void_v<E>
+static_assert(!canCstrFromExpected<void, int, int, int>);
+
+// !is_constructible_v<E, GF>
+static_assert(!canCstrFromExpected<void, NoCtorFromInt, void, int>);
+
+template <class T>
+struct CtorFrom {
+  explicit CtorFrom(int)
+    requires(!std::same_as<T, int>);
+  explicit CtorFrom(T);
+  explicit CtorFrom(auto&&) = delete;
+};
+
+// Note for below 4 tests, because their E is constructible from cvref of std::expected<void, int>,
+// unexpected<E> will be constructible from cvref of std::expected<void, int>
+// is_constructible_v<unexpected<E>, expected<U, G>&>
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int>&>, void, int>);
+
+// is_constructible_v<unexpected<E>, expected<U, G>>
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int>&&>, void, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>&> is false
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int> const&>, void, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>>
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int> const&&>, void, int>);
+
+// test explicit
+static_assert(std::is_convertible_v<const std::expected<void, int>&, std::expected<void, long>>);
+
+// !is_convertible_v<GF, E>.
+static_assert(std::is_constructible_v<std::expected<void, CtorFrom<int>>, const std::expected<void, int>&>);
+static_assert(!std::is_convertible_v<const std::expected<void, int>&, std::expected<void, CtorFrom<int>>>);
+
+struct Data {
+  int i;
+  constexpr Data(int ii) : i(ii) {}
+};
+
+constexpr bool test() {
+  // convert the error
+  {
+    const std::expected<void, int> e1(std::unexpect, 5);
+    std::expected<void, Data> e2 = e1;
+    assert(!e2.has_value());
+    assert(e2.error().i == 5);
+    assert(!e1.has_value());
+    assert(e1.error() == 5);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct ThrowingInt {
+    ThrowingInt(int) { throw Except{}; }
+  };
+
+  // throw on converting error
+  {
+    const std::expected<void, int> e1(std::unexpect);
+    try {
+      [[maybe_unused]] std::expected<void, ThrowingInt> e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.convert.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.convert.move.pass.cpp
new file mode 100644
index 0000000..b28fc7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.convert.move.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class U, class G>
+//   constexpr explicit(!is_convertible_v<G, E>) expected(expected<U, G>&& rhs);
+//
+// Let GF be G
+//
+// Constraints:
+// - is_void_v<U> is true; and
+// - is_constructible_v<E, GF> is true; and
+// - is_constructible_v<unexpected<E>, expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, expected<U, G>> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>&> is false; and
+// - is_constructible_v<unexpected<E>, const expected<U, G>> is false.
+//
+// Effects: If rhs.has_value() is false, direct-non-list-initializes unex with std::forward<GF>(rhs.error()).
+//
+// Postconditions: rhs.has_value() is unchanged; rhs.has_value() == this->has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+template <class T1, class Err1, class T2, class Err2>
+concept canCstrFromExpected = std::is_constructible_v<std::expected<T1, Err1>, std::expected<T2, Err2>&&>;
+
+struct CtorFromInt {
+  CtorFromInt(int);
+};
+
+static_assert(canCstrFromExpected<void, CtorFromInt, void, int>);
+
+struct NoCtorFromInt {};
+
+// !is_void_v<U>
+static_assert(!canCstrFromExpected<void, int, int, int>);
+
+// !is_constructible_v<E, GF>
+static_assert(!canCstrFromExpected<void, NoCtorFromInt, void, int>);
+
+template <class T>
+struct CtorFrom {
+  explicit CtorFrom(int)
+    requires(!std::same_as<T, int>);
+  explicit CtorFrom(T);
+  explicit CtorFrom(auto&&) = delete;
+};
+
+// Note for below 4 tests, because their E is constructible from cvref of std::expected<void, int>,
+// unexpected<E> will be constructible from cvref of std::expected<void, int>
+// is_constructible_v<unexpected<E>, expected<U, G>&>
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int>&>, void, int>);
+
+// is_constructible_v<unexpected<E>, expected<U, G>>
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int>&&>, void, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>&> is false
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int> const&>, void, int>);
+
+// is_constructible_v<unexpected<E>, const expected<U, G>>
+static_assert(!canCstrFromExpected<void, CtorFrom<std::expected<void, int> const&&>, void, int>);
+
+// test explicit
+static_assert(std::is_convertible_v<std::expected<void, int>&&, std::expected<void, long>>);
+
+// !is_convertible_v<GF, E>.
+static_assert(std::is_constructible_v<std::expected<void, CtorFrom<int>>, std::expected<void, int>&&>);
+static_assert(!std::is_convertible_v<std::expected<void, int>&&, std::expected<void, CtorFrom<int>>>);
+
+struct Data {
+  MoveOnly data;
+  constexpr Data(MoveOnly&& m) : data(std::move(m)) {}
+};
+
+constexpr bool test() {
+  // convert the error
+  {
+    std::expected<void, MoveOnly> e1(std::unexpect, 5);
+    std::expected<void, Data> e2 = std::move(e1);
+    assert(!e2.has_value());
+    assert(e2.error().data.get() == 5);
+    assert(!e1.has_value());
+    assert(e1.error().get() == 0);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct ThrowingInt {
+    ThrowingInt(int) { throw Except{}; }
+  };
+
+  // throw on converting error
+  {
+    const std::expected<void, int> e1(std::unexpect);
+    try {
+      [[maybe_unused]] std::expected<void, ThrowingInt> e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.copy.pass.cpp
new file mode 100644
index 0000000..689f152
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.copy.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr expected(const expected& rhs);
+//
+// Effects: If rhs.has_value() is false, direct-non-list-initializes unex with rhs.error().
+//
+// Postconditions: rhs.has_value() == this->has_value().
+//
+// Throws: Any exception thrown by the initialization of unex.
+//
+// Remarks:
+// - This constructor is defined as deleted unless is_copy_constructible_v<E> is true.
+// - This constructor is trivial if is_trivially_copy_constructible_v<E> is true.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct NonCopyable {
+  NonCopyable(const NonCopyable&) = delete;
+};
+
+struct CopyableNonTrivial {
+  int i;
+  constexpr CopyableNonTrivial(int ii) : i(ii) {}
+  constexpr CopyableNonTrivial(const CopyableNonTrivial& o) { i = o.i; }
+  friend constexpr bool operator==(const CopyableNonTrivial&, const CopyableNonTrivial&) = default;
+};
+
+// Test: This constructor is defined as deleted unless is_copy_constructible_v<E> is true.
+static_assert(std::is_copy_constructible_v<std::expected<void, int>>);
+static_assert(std::is_copy_constructible_v<std::expected<void, CopyableNonTrivial>>);
+static_assert(!std::is_copy_constructible_v<std::expected<void, NonCopyable>>);
+
+// Test: This constructor is trivial if is_trivially_copy_constructible_v<E> is true.
+static_assert(std::is_trivially_copy_constructible_v<std::expected<void, int>>);
+static_assert(!std::is_trivially_copy_constructible_v<std::expected<void, CopyableNonTrivial>>);
+
+constexpr bool test() {
+  // copy the error non-trivial
+  {
+    const std::expected<void, CopyableNonTrivial> e1(std::unexpect, 5);
+    auto e2 = e1;
+    assert(!e2.has_value());
+    assert(e2.error().i == 5);
+  }
+
+  // copy the error trivial
+  {
+    const std::expected<void, int> e1(std::unexpect, 5);
+    auto e2 = e1;
+    assert(!e2.has_value());
+    assert(e2.error() == 5);
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing() = default;
+    Throwing(const Throwing&) { throw Except{}; }
+  };
+
+  // throw on copying error
+  {
+    const std::expected<void, Throwing> e1(std::unexpect);
+    try {
+      [[maybe_unused]] auto e2 = e1;
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.default.pass.cpp
new file mode 100644
index 0000000..e05cf02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.default.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr expected() noexcept;
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// Test noexcept
+
+struct NoDefaultCtor {
+  constexpr NoDefaultCtor() = delete;
+};
+
+static_assert(std::is_nothrow_default_constructible_v<std::expected<void, int>>);
+static_assert(std::is_nothrow_default_constructible_v<std::expected<void, NoDefaultCtor>>);
+
+struct MyInt {
+  int i;
+  friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
+};
+
+constexpr bool test() {
+  // default constructible
+  {
+    std::expected<void, int> e;
+    assert(e.has_value());
+  }
+
+  // non-default constructible
+  {
+    std::expected<void, NoDefaultCtor> e;
+    assert(e.has_value());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.inplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.inplace.pass.cpp
new file mode 100644
index 0000000..848e61d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.inplace.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr explicit expected(in_place_t) noexcept;
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+// test explicit
+static_assert(std::is_constructible_v<std::expected<void, int>, std::in_place_t>);
+static_assert(!std::is_convertible_v<std::in_place_t, std::expected<void, int>>);
+
+// test noexcept
+static_assert(std::is_nothrow_constructible_v<std::expected<void, int>, std::in_place_t>);
+
+constexpr bool test() {
+  std::expected<void, int> e(std::in_place);
+  assert(e.has_value());
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.move.pass.cpp
new file mode 100644
index 0000000..61bce2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.move.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr expected(expected&& rhs) noexcept(is_nothrow_move_constructible_v<E>);
+//
+// Constraints: is_move_constructible_v<E> is true.
+//
+// Effects: If rhs.has_value() is false, direct-non-list-initializes unex with std::move(rhs.error()).
+//
+// Postconditions: rhs.has_value() is unchanged; rhs.has_value() == this->has_value() is true.
+//
+// Throws: Any exception thrown by the initialization of unex.
+//
+// Remarks: This constructor is trivial if is_trivially_move_constructible_v<E> is true.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct NonMovable {
+  NonMovable(NonMovable&&) = delete;
+};
+
+struct MovableNonTrivial {
+  int i;
+  constexpr MovableNonTrivial(int ii) : i(ii) {}
+  constexpr MovableNonTrivial(MovableNonTrivial&& o) : i(o.i) { o.i = 0; }
+  friend constexpr bool operator==(const MovableNonTrivial&, const MovableNonTrivial&) = default;
+};
+
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow&&) {}
+};
+
+// Test Constraints:
+// - is_move_constructible_v<E> is true.
+static_assert(std::is_move_constructible_v<std::expected<void, int>>);
+static_assert(std::is_move_constructible_v<std::expected<void, MovableNonTrivial>>);
+static_assert(!std::is_move_constructible_v<std::expected<void, NonMovable>>);
+
+// Test: This constructor is trivial if is_trivially_move_constructible_v<E> is true.
+static_assert(std::is_trivially_move_constructible_v<std::expected<void, int>>);
+static_assert(!std::is_trivially_move_constructible_v<std::expected<void, MovableNonTrivial>>);
+
+// Test: noexcept(is_nothrow_move_constructible_v<E>)
+static_assert(std::is_nothrow_move_constructible_v<std::expected<int, int>>);
+static_assert(!std::is_nothrow_move_constructible_v<std::expected<MoveMayThrow, int>>);
+static_assert(!std::is_nothrow_move_constructible_v<std::expected<int, MoveMayThrow>>);
+static_assert(!std::is_nothrow_move_constructible_v<std::expected<MoveMayThrow, MoveMayThrow>>);
+
+constexpr bool test() {
+  // move the error non-trivial
+  {
+    std::expected<void, MovableNonTrivial> e1(std::unexpect, 5);
+    auto e2 = std::move(e1);
+    assert(!e2.has_value());
+    assert(e2.error().i == 5);
+    assert(!e1.has_value());
+    assert(e1.error().i == 0);
+  }
+
+  // move the error trivial
+  {
+    std::expected<void, int> e1(std::unexpect, 5);
+    auto e2 = std::move(e1);
+    assert(!e2.has_value());
+    assert(e2.error() == 5);
+    assert(!e1.has_value());
+  }
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing() = default;
+    Throwing(Throwing&&) { throw Except{}; }
+  };
+
+  // throw on moving error
+  {
+    std::expected<void, Throwing> e1(std::unexpect);
+    try {
+      [[maybe_unused]] auto e2 = std::move(e1);
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect.pass.cpp
new file mode 100644
index 0000000..0a857c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class... Args>
+//   constexpr explicit expected(unexpect_t, Args&&... args);
+//
+// Constraints: is_constructible_v<E, Args...> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<Args>(args)....
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <expected>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(std::is_constructible_v<std::expected<void, int>, std::unexpect_t>);
+static_assert(std::is_constructible_v<std::expected<void, int>, std::unexpect_t, int>);
+
+// !is_constructible_v<T, Args...>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<void, foo>, std::unexpect_t, int>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(!ImplicitlyConstructible<std::expected<void, int>, std::unexpect_t>);
+static_assert(!ImplicitlyConstructible<std::expected<void, int>, std::unexpect_t, int>);
+
+struct CopyOnly {
+  int i;
+  constexpr CopyOnly(int ii) : i(ii) {}
+  CopyOnly(const CopyOnly&) = default;
+  CopyOnly(CopyOnly&&)      = delete;
+  friend constexpr bool operator==(const CopyOnly& mi, int ii) { return mi.i == ii; }
+};
+
+template <class T>
+constexpr void testInt() {
+  std::expected<void, T> e(std::unexpect, 5);
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+template <class T>
+constexpr void testLValue() {
+  T t(5);
+  std::expected<void, T> e(std::unexpect, t);
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+template <class T>
+constexpr void testRValue() {
+  std::expected<void, T> e(std::unexpect, T(5));
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+constexpr bool test() {
+  testInt<int>();
+  testInt<CopyOnly>();
+  testInt<MoveOnly>();
+  testLValue<int>();
+  testLValue<CopyOnly>();
+  testRValue<int>();
+  testRValue<MoveOnly>();
+
+  // no arg
+  {
+    std::expected<void, int> e(std::unexpect);
+    assert(!e.has_value());
+    assert(e.error() == 0);
+  }
+
+  // one arg
+  {
+    std::expected<void, int> e(std::unexpect, 5);
+    assert(!e.has_value());
+    assert(e.error() == 5);
+  }
+
+  // multi args
+  {
+    std::expected<void, std::tuple<int, short, MoveOnly>> e(std::unexpect, 1, short{2}, MoveOnly(3));
+    assert(!e.has_value());
+    assert((e.error() == std::tuple<int, short, MoveOnly>(1, short{2}, MoveOnly(3))));
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<void, Throwing> u(std::unexpect, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp
new file mode 100644
index 0000000..4115ead
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpect_init_list.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// template<class U, class... Args>
+//   constexpr explicit expected(unexpect_t, initializer_list<U> il, Args&&... args);
+//
+// Constraints: is_constructible_v<E, initializer_list<U>&, Args...> is true.
+//
+// Effects: Direct-non-list-initializes unex with il, std::forward<Args>(args)....
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <algorithm>
+#include <cassert>
+#include <expected>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints:
+static_assert(
+    std::is_constructible_v<std::expected<void, std::vector<int>>, std::unexpect_t, std::initializer_list<int>>);
+
+// !is_constructible_v<T, initializer_list<U>&, Args...>
+static_assert(!std::is_constructible_v<std::expected<void, int>, std::unexpect_t, std::initializer_list<int>>);
+
+// test explicit
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+static_assert(ImplicitlyConstructible<int, int>);
+
+static_assert(
+    !ImplicitlyConstructible<std::expected<void, std::vector<int>>, std::unexpect_t, std::initializer_list<int>>);
+
+template <class... Ts>
+struct Data {
+  std::vector<int> vec_;
+  std::tuple<Ts...> tuple_;
+
+  template <class... Us>
+  constexpr Data(std::initializer_list<int> il, Us&&... us) : vec_(il), tuple_(std::forward<Us>(us)...) {}
+};
+
+constexpr bool test() {
+  // no arg
+  {
+    std::expected<void, Data<>> e(std::unexpect, {1, 2, 3});
+    assert(!e.has_value());
+    auto expectedList = {1, 2, 3};
+    assert(std::ranges::equal(e.error().vec_, expectedList));
+  }
+
+  // one arg
+  {
+    std::expected<void, Data<MoveOnly>> e(std::unexpect, {4, 5, 6}, MoveOnly(5));
+    assert(!e.has_value());
+    auto expectedList = {4, 5, 6};
+    assert((std::ranges::equal(e.error().vec_, expectedList)));
+    assert(std::get<0>(e.error().tuple_) == 5);
+  }
+
+  // multi args
+  {
+    int i = 5;
+    int j = 6;
+    MoveOnly m(7);
+    std::expected<void, Data<int&, int&&, MoveOnly>> e(std::unexpect, {1, 2}, i, std::move(j), std::move(m));
+    assert(!e.has_value());
+    auto expectedList = {1, 2};
+    assert((std::ranges::equal(e.error().vec_, expectedList)));
+    assert(&std::get<0>(e.error().tuple_) == &i);
+    assert(&std::get<1>(e.error().tuple_) == &j);
+    assert(std::get<2>(e.error().tuple_) == 7);
+    assert(m.get() == 0);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(std::initializer_list<int>, int) { throw Except{}; };
+  };
+
+  try {
+    std::expected<void, Throwing> u(std::unexpect, {1, 2}, 5);
+    assert(false);
+  } catch (Except) {
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpected.copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpected.copy.pass.cpp
new file mode 100644
index 0000000..89e1c92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpected.copy.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class G>
+//   constexpr explicit(!is_convertible_v<const G&, E>) expected(const unexpected<G>& e);
+//
+// Let GF be const G&
+//
+// Constraints: is_constructible_v<E, GF> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<GF>(e.error()).
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints
+static_assert(std::is_constructible_v<std::expected<void, int>, const std::unexpected<int>&>);
+
+// !is_constructible_v<E, GF>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<void, int>, const std::unexpected<foo>&>);
+static_assert(!std::is_constructible_v<std::expected<void, MoveOnly>, const std::unexpected<MoveOnly>&>);
+
+// explicit(!is_convertible_v<const G&, E>)
+struct NotConvertible {
+  explicit NotConvertible(int);
+};
+static_assert(std::is_convertible_v<const std::unexpected<int>&, std::expected<void, int>>);
+static_assert(!std::is_convertible_v<const std::unexpected<int>&, std::expected<void, NotConvertible>>);
+
+struct MyInt {
+  int i;
+  constexpr MyInt(int ii) : i(ii) {}
+  friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
+};
+
+template <class T>
+constexpr void testUnexpected() {
+  const std::unexpected<int> u(5);
+  std::expected<void, T> e(u);
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+constexpr bool test() {
+  testUnexpected<int>();
+  testUnexpected<MyInt>();
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; }
+  };
+
+  {
+    const std::unexpected<int> u(5);
+    try {
+      [[maybe_unused]] std::expected<void, Throwing> e(u);
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpected.move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpected.move.pass.cpp
new file mode 100644
index 0000000..2ddcb63
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/ctor/ctor.unexpected.move.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class G>
+//   constexpr explicit(!is_convertible_v<G, E>) expected(unexpected<G>&& e);
+//
+// Let GF be G
+//
+// Constraints: is_constructible_v<E, GF> is true.
+//
+// Effects: Direct-non-list-initializes unex with std::forward<GF>(e.error()).
+//
+// Postconditions: has_value() is false.
+//
+// Throws: Any exception thrown by the initialization of unex.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+// Test Constraints
+static_assert(std::is_constructible_v<std::expected<void, int>, std::unexpected<int>>);
+static_assert(std::is_constructible_v<std::expected<void, MoveOnly>, std::unexpected<MoveOnly>>);
+
+// !is_constructible_v<E, GF>
+struct foo {};
+static_assert(!std::is_constructible_v<std::expected<void, int>, std::unexpected<foo>>);
+
+// explicit(!is_convertible_v<G, E>)
+struct NotConvertible {
+  explicit NotConvertible(int);
+};
+static_assert(std::is_convertible_v<std::unexpected<int>&&, std::expected<void, int>>);
+static_assert(!std::is_convertible_v<std::unexpected<int>&&, std::expected<void, NotConvertible>>);
+
+struct MyInt {
+  int i;
+  constexpr MyInt(int ii) : i(ii) {}
+  friend constexpr bool operator==(const MyInt&, const MyInt&) = default;
+};
+
+template <class Err>
+constexpr void testInt() {
+  std::unexpected<int> u(5);
+  std::expected<void, Err> e(std::move(u));
+  assert(!e.has_value());
+  assert(e.error() == 5);
+}
+
+constexpr void testMoveOnly() {
+  std::unexpected<MoveOnly> u(MoveOnly(5));
+  std::expected<void, MoveOnly> e(std::move(u));
+  assert(!e.has_value());
+  assert(e.error() == 5);
+  assert(u.error() == 0);
+}
+
+constexpr bool test() {
+  testInt<int>();
+  testInt<MyInt>();
+  testInt<MoveOnly>();
+  testMoveOnly();
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  struct Except {};
+
+  struct Throwing {
+    Throwing(int) { throw Except{}; }
+  };
+
+  {
+    std::unexpected<int> u(5);
+    try {
+      [[maybe_unused]] std::expected<void, Throwing> e(std::move(u));
+      assert(false);
+    } catch (Except) {
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp
new file mode 100644
index 0000000..8ca92ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/dtor.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr ~expected();
+//
+// Effects: If has_value() is false, destroys unex.
+//
+// Remarks: If is_trivially_destructible_v<E> is true, then this destructor is a trivial destructor.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test Remarks: If is_trivially_destructible_v<E> is true, then this destructor is a trivial destructor.
+struct NonTrivial {
+  ~NonTrivial() {}
+};
+
+static_assert(std::is_trivially_destructible_v<std::expected<void, int>>);
+static_assert(!std::is_trivially_destructible_v<std::expected<void, NonTrivial>>);
+
+struct TrackedDestroy {
+  bool& destroyed;
+  constexpr TrackedDestroy(bool& b) : destroyed(b) {}
+  constexpr ~TrackedDestroy() { destroyed = true; }
+};
+
+constexpr bool test() {
+  // has value
+  { [[maybe_unused]] std::expected<void, TrackedDestroy> e(std::in_place); }
+
+  // has error
+  {
+    bool errorDestroyed = false;
+    { [[maybe_unused]] std::expected<void, TrackedDestroy> e(std::unexpect, errorDestroyed); }
+    assert(errorDestroyed);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/equality/equality.other_expected.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/equality/equality.other_expected.pass.cpp
new file mode 100644
index 0000000..eb05a84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/equality/equality.other_expected.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class T2, class E2> requires (is_void_v<T2>)
+//   friend constexpr bool operator==(const expected& x, const expected<T2, E2>& y);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test constraint
+template <class T1, class T2>
+concept CanCompare = requires(T1 t1, T2 t2) { t1 == t2; };
+
+struct Foo{};
+static_assert(!CanCompare<Foo, Foo>);
+
+static_assert(CanCompare<std::expected<void, int>, std::expected<void, int>>);
+static_assert(CanCompare<std::expected<void, int>, std::expected<void, short>>);
+
+// Note this is true because other overloads in expected<non-void> are unconstrained
+static_assert(CanCompare<std::expected<void, int>, std::expected<int, int>>);
+
+constexpr bool test() {
+  // x.has_value() && y.has_value()
+  {
+    const std::expected<void, int> e1;
+    const std::expected<void, int> e2;
+    assert(e1 == e2);
+  }
+
+  // !x.has_value() && y.has_value()
+  {
+    const std::expected<void, int> e1(std::unexpect, 5);
+    const std::expected<void, int> e2;
+    assert(e1 != e2);
+  }
+
+  // x.has_value() && !y.has_value()
+  {
+    const std::expected<void, int> e1;
+    const std::expected<void, int> e2(std::unexpect, 10);
+    const std::expected<void, int> e3(std::unexpect, 5);
+    assert(e1 != e2);
+    assert(e1 != e3);
+  }
+
+  // !x.has_value() && !y.has_value()
+  {
+    const std::expected<void, int> e1(std::unexpect, 5);
+    const std::expected<void, int> e2(std::unexpect, 10);
+    const std::expected<void, int> e3(std::unexpect, 5);
+    assert(e1 != e2);
+    assert(e1 == e3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/equality/equality.unexpected.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/equality/equality.unexpected.pass.cpp
new file mode 100644
index 0000000..ce95d16
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/equality/equality.unexpected.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// template<class E2> friend constexpr bool operator==(const expected& x, const unexpected<E2>& e);
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Data {
+  int i;
+  constexpr Data(int ii) : i(ii) {}
+
+  friend constexpr bool operator==(const Data& data, int ii) { return data.i == ii; }
+};
+
+constexpr bool test() {
+  // x.has_value()
+  {
+    const std::expected<void, Data> e1;
+    std::unexpected<int> un2(10);
+    std::unexpected<int> un3(5);
+    assert(e1 != un2);
+    assert(e1 != un3);
+  }
+
+  // !x.has_value()
+  {
+    const std::expected<void, Data> e1(std::unexpect, 5);
+    std::unexpected<int> un2(10);
+    std::unexpected<int> un3(5);
+    assert(e1 != un2);
+    assert(e1 == un3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/bool.pass.cpp
new file mode 100644
index 0000000..42e9f22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/bool.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr explicit operator bool() const noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept OpBoolNoexcept =
+    requires(T t) {
+      { static_cast<bool>(t) } noexcept;
+    };
+
+struct Foo {};
+static_assert(!OpBoolNoexcept<Foo>);
+
+static_assert(OpBoolNoexcept<std::expected<void, int>>);
+static_assert(OpBoolNoexcept<const std::expected<void, int>>);
+
+// Test explicit
+static_assert(!std::is_convertible_v<std::expected<void, int>, bool>);
+
+constexpr bool test() {
+  // has_value
+  {
+    const std::expected<void, int> e;
+    assert(static_cast<bool>(e));
+  }
+
+  // !has_value
+  {
+    const std::expected<void, int> e(std::unexpect, 5);
+    assert(!static_cast<bool>(e));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/deref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/deref.pass.cpp
new file mode 100644
index 0000000..536f898
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/deref.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr void operator*() const & noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept DerefNoexcept =
+    requires(T t) {
+      { std::forward<T>(t).operator*() } noexcept;
+    };
+
+static_assert(!DerefNoexcept<int>);
+
+static_assert(DerefNoexcept<std::expected<void, int>>);
+
+constexpr bool test() {
+  const std::expected<void, int> e;
+  *e;
+  static_assert(std::is_same_v<decltype(*e), void>);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/error.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/error.pass.cpp
new file mode 100644
index 0000000..f7be760
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/error.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr const E& error() const & noexcept;
+// constexpr E& error() & noexcept;
+// constexpr E&& error() && noexcept;
+// constexpr const E&& error() const && noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept ErrorNoexcept =
+    requires(T t) {
+      { std::forward<T>(t).error() } noexcept;
+    };
+
+static_assert(!ErrorNoexcept<int>);
+
+static_assert(ErrorNoexcept<std::expected<void, int>&>);
+static_assert(ErrorNoexcept<const std::expected<void, int>&>);
+static_assert(ErrorNoexcept<std::expected<void, int>&&>);
+static_assert(ErrorNoexcept<const std::expected<void, int>&&>);
+
+constexpr bool test() {
+  // non-const &
+  {
+    std::expected<void, int> e(std::unexpect, 5);
+    decltype(auto) x = e.error();
+    static_assert(std::same_as<decltype(x), int&>);
+    assert(x == 5);
+  }
+
+  // const &
+  {
+    const std::expected<void, int> e(std::unexpect, 5);
+    decltype(auto) x = e.error();
+    static_assert(std::same_as<decltype(x), const int&>);
+    assert(x == 5);
+  }
+
+  // non-const &&
+  {
+    std::expected<void, int> e(std::unexpect, 5);
+    decltype(auto) x = std::move(e).error();
+    static_assert(std::same_as<decltype(x), int&&>);
+    assert(x == 5);
+  }
+
+  // const &&
+  {
+    const std::expected<void, int> e(std::unexpect, 5);
+    decltype(auto) x = std::move(e).error();
+    static_assert(std::same_as<decltype(x), const int&&>);
+    assert(x == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/has_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/has_value.pass.cpp
new file mode 100644
index 0000000..42a173d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/has_value.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr bool has_value() const noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test noexcept
+template <class T>
+concept HasValueNoexcept =
+    requires(T t) {
+      { t.has_value() } noexcept;
+    };
+
+struct Foo {};
+static_assert(!HasValueNoexcept<Foo>);
+
+static_assert(HasValueNoexcept<std::expected<int, int>>);
+static_assert(HasValueNoexcept<const std::expected<int, int>>);
+
+constexpr bool test() {
+  // has_value
+  {
+    const std::expected<void, int> e;
+    assert(e.has_value());
+  }
+
+  // !has_value
+  {
+    const std::expected<void, int> e(std::unexpect, 5);
+    assert(!e.has_value());
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/value.pass.cpp
new file mode 100644
index 0000000..0f02db1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/observers/value.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// constexpr void value() const &;
+// constexpr void value() &&;
+
+#include <cassert>
+#include <concepts>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "MoveOnly.h"
+#include "test_macros.h"
+
+constexpr bool test() {
+  // const &
+  {
+    const std::expected<void, int> e;
+    e.value();
+    static_assert(std::is_same_v<decltype(e.value()), void>);
+  }
+
+  // &
+  {
+    std::expected<void, int> e;
+    e.value();
+    static_assert(std::is_same_v<decltype(e.value()), void>);
+  }
+
+  // &&
+  {
+    std::expected<void, int> e;
+    std::move(e).value();
+    static_assert(std::is_same_v<decltype(std::move(e).value()), void>);
+  }
+
+  // const &&
+  {
+    const std::expected<void, int> e;
+    std::move(e).value();
+    static_assert(std::is_same_v<decltype(std::move(e).value()), void>);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+  // int
+  {
+    const std::expected<void, int> e(std::unexpect, 5);
+    try {
+      e.value();
+      assert(false);
+    } catch (const std::bad_expected_access<int>& ex) {
+      assert(ex.error() == 5);
+    }
+  }
+
+  // MoveOnly
+  {
+    std::expected<void, MoveOnly> e(std::unexpect, 5);
+    try {
+      std::move(e).value();
+      assert(false);
+    } catch (const std::bad_expected_access<MoveOnly>& ex) {
+      assert(ex.error() == 5);
+    }
+  }
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp
new file mode 100644
index 0000000..0f5821e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/swap/free.swap.pass.cpp
@@ -0,0 +1,164 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, clang-15, apple-clang-14
+
+// friend constexpr void swap(expected& x, expected& y) noexcept(noexcept(swap(x,y)));
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+// Test constraint
+static_assert(std::is_swappable_v<std::expected<void, int>>);
+
+struct NotSwappable {
+  NotSwappable& operator=(const NotSwappable&) = delete;
+};
+void swap(NotSwappable&, NotSwappable&) = delete;
+
+// !is_swappable_v<E>
+static_assert(!std::is_swappable_v<std::expected<void, NotSwappable>>);
+
+struct NotMoveContructible {
+  NotMoveContructible(NotMoveContructible&&) = delete;
+  friend void swap(NotMoveContructible&, NotMoveContructible&) {}
+};
+
+// !is_move_constructible_v<E>
+static_assert(!std::is_swappable_v<std::expected<void, NotMoveContructible>>);
+
+// Test noexcept
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow&&) noexcept(false);
+  friend void swap(MoveMayThrow&, MoveMayThrow&) noexcept {}
+};
+
+template <class E>
+concept FreeSwapNoexcept =
+    requires(std::expected<void, E> x, std::expected<void, E> y) {
+      { swap(x, y) } noexcept;
+    };
+
+static_assert(FreeSwapNoexcept<int>);
+
+// !is_nothrow_move_constructible_v<E>
+static_assert(!FreeSwapNoexcept<MoveMayThrow>);
+
+struct SwapMayThrow {
+  friend void swap(SwapMayThrow&, SwapMayThrow&) noexcept(false) {}
+};
+
+// !is_nothrow_swappable_v<E>
+static_assert(!FreeSwapNoexcept<SwapMayThrow>);
+
+constexpr bool test() {
+  // this->has_value() && rhs.has_value()
+  {
+    std::expected<void, int> x;
+    std::expected<void, int> y;
+    swap(x, y);
+
+    assert(x.has_value());
+    assert(y.has_value());
+  }
+
+  // !this->has_value() && !rhs.has_value()
+  {
+    std::expected<void, ADLSwap> x(std::unexpect, 5);
+    std::expected<void, ADLSwap> y(std::unexpect, 10);
+    swap(x, y);
+
+    assert(!x.has_value());
+    assert(x.error().i == 10);
+    assert(x.error().adlSwapCalled);
+    assert(!y.has_value());
+    assert(y.error().i == 5);
+    assert(y.error().adlSwapCalled);
+  }
+
+  // this->has_value() && !rhs.has_value()
+  {
+    Traced::state s{};
+    std::expected<void, Traced> e1(std::in_place);
+    std::expected<void, Traced> e2(std::unexpect, s, 10);
+
+    e1.swap(e2);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(e2.has_value());
+
+    assert(s.moveCtorCalled);
+    assert(s.dtorCalled);
+  }
+
+  // !this->has_value() && rhs.has_value()
+  {
+    Traced::state s{};
+    std::expected<void, Traced> e1(std::unexpect, s, 10);
+    std::expected<void, Traced> e2(std::in_place);
+
+    e1.swap(e2);
+
+    assert(e1.has_value());
+    assert(!e2.has_value());
+    assert(e2.error().data_ == 10);
+
+    assert(s.moveCtorCalled);
+    assert(s.dtorCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  // !e1.has_value() && e2.has_value()
+  {
+    bool e1Destroyed = false;
+    std::expected<void, ThrowOnMove> e1(std::unexpect, e1Destroyed);
+    std::expected<void, ThrowOnMove> e2(std::in_place);
+    try {
+      swap(e1, e2);
+      assert(false);
+    } catch (Except) {
+      assert(!e1.has_value());
+      assert(e2.has_value());
+      assert(!e1Destroyed);
+    }
+  }
+
+  // e1.has_value() && !e2.has_value()
+  {
+    bool e2Destroyed = false;
+    std::expected<void, ThrowOnMove> e1(std::in_place);
+    std::expected<void, ThrowOnMove> e2(std::unexpect, e2Destroyed);
+    try {
+      swap(e1, e2);
+      assert(false);
+    } catch (Except) {
+      assert(e1.has_value());
+      assert(!e2.has_value());
+      assert(!e2Destroyed);
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp
new file mode 100644
index 0000000..247d92a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/expected.void/swap/member.swap.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// Older Clangs do not support the C++20 feature to constrain destructors
+// XFAIL: clang-14, apple-clang-14
+
+// constexpr void swap(expected& rhs) noexcept(see below);
+//
+// Constraints:
+// is_swappable_v<E> is true and is_move_constructible_v<E> is true.
+//
+// Throws: Any exception thrown by the expressions in the Effects.
+//
+// Remarks: The exception specification is equivalent to:
+// is_nothrow_move_constructible_v<E> && is_nothrow_swappable_v<E>.
+
+#include <cassert>
+#include <expected>
+#include <type_traits>
+#include <utility>
+
+#include "../../types.h"
+#include "test_macros.h"
+
+// Test Constraints:
+template <class E>
+concept HasMemberSwap = requires(std::expected<void, E> x, std::expected<void, E> y) { x.swap(y); };
+
+static_assert(HasMemberSwap<int>);
+
+struct NotSwappable {};
+void swap(NotSwappable&, NotSwappable&) = delete;
+
+// !is_swappable_v<E>
+static_assert(!HasMemberSwap<NotSwappable>);
+
+struct NotMoveContructible {
+  NotMoveContructible(NotMoveContructible&&) = delete;
+  friend void swap(NotMoveContructible&, NotMoveContructible&) {}
+};
+
+// !is_move_constructible_v<E>
+static_assert(!HasMemberSwap<NotMoveContructible>);
+
+// Test noexcept
+struct MoveMayThrow {
+  MoveMayThrow(MoveMayThrow&&) noexcept(false);
+  friend void swap(MoveMayThrow&, MoveMayThrow&) noexcept {}
+};
+
+template <class E>
+concept MemberSwapNoexcept =
+    requires(std::expected<void, E> x, std::expected<void, E> y) {
+      { x.swap(y) } noexcept;
+    };
+
+static_assert(MemberSwapNoexcept<int>);
+
+// !is_nothrow_move_constructible_v<E>
+static_assert(!MemberSwapNoexcept<MoveMayThrow>);
+
+struct SwapMayThrow {
+  friend void swap(SwapMayThrow&, SwapMayThrow&) noexcept(false) {}
+};
+
+// !is_nothrow_swappable_v<E>
+static_assert(!MemberSwapNoexcept<SwapMayThrow>);
+
+constexpr bool test() {
+  // this->has_value() && rhs.has_value()
+  {
+    std::expected<void, int> x;
+    std::expected<void, int> y;
+    x.swap(y);
+
+    assert(x.has_value());
+    assert(y.has_value());
+  }
+
+  // !this->has_value() && !rhs.has_value()
+  {
+    std::expected<void, ADLSwap> x(std::unexpect, 5);
+    std::expected<void, ADLSwap> y(std::unexpect, 10);
+    x.swap(y);
+
+    assert(!x.has_value());
+    assert(x.error().i == 10);
+    assert(x.error().adlSwapCalled);
+    assert(!y.has_value());
+    assert(y.error().i == 5);
+    assert(y.error().adlSwapCalled);
+  }
+
+  // this->has_value() && !rhs.has_value()
+  {
+    Traced::state s{};
+    std::expected<void, Traced> e1(std::in_place);
+    std::expected<void, Traced> e2(std::unexpect, s, 10);
+
+    e1.swap(e2);
+
+    assert(!e1.has_value());
+    assert(e1.error().data_ == 10);
+    assert(e2.has_value());
+
+    assert(s.moveCtorCalled);
+    assert(s.dtorCalled);
+  }
+
+  // !this->has_value() && rhs.has_value()
+  {
+    Traced::state s{};
+    std::expected<void, Traced> e1(std::unexpect, s, 10);
+    std::expected<void, Traced> e2(std::in_place);
+
+    e1.swap(e2);
+
+    assert(e1.has_value());
+    assert(!e2.has_value());
+    assert(e2.error().data_ == 10);
+
+    assert(s.moveCtorCalled);
+    assert(s.dtorCalled);
+  }
+
+  return true;
+}
+
+void testException() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  // !e1.has_value() && e2.has_value()
+  {
+    bool e1Destroyed = false;
+    std::expected<void, ThrowOnMove> e1(std::unexpect, e1Destroyed);
+    std::expected<void, ThrowOnMove> e2(std::in_place);
+    try {
+      e1.swap(e2);
+      assert(false);
+    } catch (Except) {
+      assert(!e1.has_value());
+      assert(e2.has_value());
+      assert(!e1Destroyed);
+    }
+  }
+
+  // e1.has_value() && !e2.has_value()
+  {
+    bool e2Destroyed = false;
+    std::expected<void, ThrowOnMove> e1(std::in_place);
+    std::expected<void, ThrowOnMove> e2(std::unexpect, e2Destroyed);
+    try {
+      e1.swap(e2);
+      assert(false);
+    } catch (Except) {
+      assert(e1.has_value());
+      assert(!e2.has_value());
+      assert(!e2Destroyed);
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  testException();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/expected/types.h b/app/src/main/cpp/libcxx/test/std/utilities/expected/types.h
new file mode 100644
index 0000000..278ab0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/expected/types.h
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_EXPECTED_TYPES_H
+#define TEST_STD_UTILITIES_EXPECTED_TYPES_H
+
+#include <utility>
+#include "test_macros.h"
+
+template <bool copyMoveNoexcept, bool convertNoexcept = true>
+struct TracedBase {
+  struct state {
+    bool copyCtorCalled   = false;
+    bool copyAssignCalled = false;
+    bool moveCtorCalled   = false;
+    bool moveAssignCalled = false;
+    bool dtorCalled       = false;
+  };
+
+  state* state_      = nullptr;
+  bool copiedFromInt = false;
+  bool movedFromInt  = false;
+  bool copiedFromTmp = false;
+  bool movedFromTmp  = false;
+  int data_;
+
+  constexpr TracedBase(const int& ii) noexcept(convertNoexcept) : data_(ii) { copiedFromInt = true; }
+  constexpr TracedBase(int&& ii) noexcept(convertNoexcept) : data_(ii) { movedFromInt = true; }
+  constexpr TracedBase(state& s, int ii) noexcept : state_(&s), data_(ii) {}
+  constexpr TracedBase(const TracedBase& other) noexcept(copyMoveNoexcept) : state_(other.state_), data_(other.data_) {
+    if (state_) {
+      state_->copyCtorCalled = true;
+    } else {
+      copiedFromTmp = true;
+    }
+  }
+  constexpr TracedBase(TracedBase&& other) noexcept(copyMoveNoexcept) : state_(other.state_), data_(other.data_) {
+    if (state_) {
+      state_->moveCtorCalled = true;
+    } else {
+      movedFromTmp = true;
+    }
+  }
+  constexpr TracedBase& operator=(const TracedBase& other) noexcept(copyMoveNoexcept) {
+    data_                    = other.data_;
+    state_->copyAssignCalled = true;
+    return *this;
+  }
+  constexpr TracedBase& operator=(TracedBase&& other) noexcept(copyMoveNoexcept) {
+    data_                    = other.data_;
+    state_->moveAssignCalled = true;
+    return *this;
+  }
+  constexpr ~TracedBase() {
+    if (state_) {
+      state_->dtorCalled = true;
+    }
+  }
+};
+
+using Traced         = TracedBase<false>;
+using TracedNoexcept = TracedBase<true>;
+
+using MoveThrowConvNoexcept = TracedBase<false, true>;
+using MoveNoexceptConvThrow = TracedBase<true, false>;
+using BothMayThrow          = TracedBase<false, false>;
+using BothNoexcept          = TracedBase<true, true>;
+
+struct ADLSwap {
+  int i;
+  bool adlSwapCalled = false;
+  constexpr ADLSwap(int ii) : i(ii) {}
+  constexpr friend void swap(ADLSwap& x, ADLSwap& y) {
+    std::swap(x.i, y.i);
+    x.adlSwapCalled = true;
+    y.adlSwapCalled = true;
+  }
+};
+
+template <bool Noexcept>
+struct TrackedMove {
+  int i;
+  int numberOfMoves = 0;
+  bool swapCalled   = false;
+
+  constexpr TrackedMove(int ii) : i(ii) {}
+  constexpr TrackedMove(TrackedMove&& other) noexcept(Noexcept)
+      : i(other.i), numberOfMoves(other.numberOfMoves), swapCalled(other.swapCalled) {
+    ++numberOfMoves;
+  }
+
+  constexpr friend void swap(TrackedMove& x, TrackedMove& y) {
+    std::swap(x.i, y.i);
+    std::swap(x.numberOfMoves, y.numberOfMoves);
+    x.swapCalled = true;
+    y.swapCalled = true;
+  }
+};
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct Except {};
+
+struct ThrowOnCopyConstruct {
+  ThrowOnCopyConstruct() = default;
+  ThrowOnCopyConstruct(const ThrowOnCopyConstruct&) { throw Except{}; }
+  ThrowOnCopyConstruct& operator=(const ThrowOnCopyConstruct&) = default;
+};
+
+struct ThrowOnMoveConstruct {
+  ThrowOnMoveConstruct() = default;
+  ThrowOnMoveConstruct(ThrowOnMoveConstruct&&) { throw Except{}; }
+  ThrowOnMoveConstruct& operator=(ThrowOnMoveConstruct&&) = default;
+};
+
+struct ThrowOnConvert {
+  ThrowOnConvert() = default;
+  ThrowOnConvert(const int&) { throw Except{}; }
+  ThrowOnConvert(int&&) { throw Except{}; }
+  ThrowOnConvert(const ThrowOnConvert&) noexcept(false) {}
+  ThrowOnConvert& operator=(const ThrowOnConvert&) = default;
+  ThrowOnConvert(ThrowOnConvert&&) noexcept(false) {}
+  ThrowOnConvert& operator=(ThrowOnConvert&&) = default;
+};
+
+struct ThrowOnMove {
+  bool* destroyed = nullptr;
+  ThrowOnMove()   = default;
+  ThrowOnMove(bool& d) : destroyed(&d) {}
+  ThrowOnMove(ThrowOnMove&&) { throw Except{}; };
+  ThrowOnMove& operator=(ThrowOnMove&&) = default;
+  ~ThrowOnMove() {
+    if (destroyed) {
+      *destroyed = true;
+    }
+  }
+};
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#endif // TEST_STD_UTILITIES_EXPECTED_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_format_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_format_args.pass.cpp
new file mode 100644
index 0000000..2e60242
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_format_args.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// template<class Context = format_context, class... Args>
+// format-arg-store<Context, Args...> make_format_args(const Args&... args);
+
+#include <cassert>
+#include <format>
+#include <iterator>
+#include <string>
+
+#include "test_basic_format_arg.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  [[maybe_unused]] auto store = std::make_format_args(42, nullptr, false, 1.0);
+
+  LIBCPP_STATIC_ASSERT(
+      std::same_as<decltype(store), std::__format_arg_store<std::format_context, int, nullptr_t, bool, double>>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_format_args.sh.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_format_args.sh.cpp
new file mode 100644
index 0000000..d36f189
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_format_args.sh.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// UNSUPPORTED: no-wide-characters
+
+// Validate it works regardless of the signedness of `char`.
+// RUN: %{cxx} %{flags} %{compile_flags} -fsigned-char -fsyntax-only %s
+// RUN: %{cxx} %{flags} %{compile_flags} -funsigned-char -fsyntax-only %s
+
+// <format>
+
+// [format.arg]/5.2
+// - otherwise, if T is char and char_type is wchar_t, initializes value with static_cast<wchar_t>(v);
+
+#include <format>
+#include <string>
+
+void test() {
+  std::make_format_args<std::basic_format_context<
+      std::back_insert_iterator<std::basic_string<wchar_t>>, wchar_t>>('c');
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_wformat_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_wformat_args.pass.cpp
new file mode 100644
index 0000000..14328a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg.store/make_wformat_args.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// XFAIL: no-wide-characters
+
+// <format>
+
+// template<class... Args>
+//   format-arg-store<wformat_context, Args...>
+//   make_wformat_args(const Args&... args);
+
+#include <cassert>
+#include <format>
+
+#include "test_basic_format_arg.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  [[maybe_unused]] auto store = std::make_wformat_args(42, nullptr, false, 1.0);
+
+  LIBCPP_STATIC_ASSERT(
+      std::same_as<decltype(store), std::__format_arg_store<std::wformat_context, int, nullptr_t, bool, double>>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/ctor.pass.cpp
new file mode 100644
index 0000000..ce89192
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/ctor.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// basic_format_arg() noexcept;
+
+// The class has several exposition only private constructors. These are tested
+// in visit_format_arg.pass.cpp
+
+#include <format>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+void test() {
+  using Context = std::basic_format_context<CharT*, CharT>;
+
+  ASSERT_NOEXCEPT(std::basic_format_arg<Context>{});
+
+  std::basic_format_arg<Context> format_arg{};
+  assert(!format_arg);
+}
+
+void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test<char8_t>();
+#endif
+  test<char16_t>();
+  test<char32_t>();
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/operator_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/operator_bool.pass.cpp
new file mode 100644
index 0000000..ecda3d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/operator_bool.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// explicit operator bool() const noexcept
+//
+// Note more testing is done in the unit test for:
+// template<class Visitor, class Context>
+//   see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg);
+
+#include <format>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class CharT>
+void test() {
+  using Context = std::basic_format_context<CharT*, CharT>;
+  {
+    std::basic_format_arg<Context> format_arg{};
+    ASSERT_NOEXCEPT(!format_arg);
+    assert(!format_arg);
+    ASSERT_NOEXCEPT(static_cast<bool>(format_arg));
+    assert(!static_cast<bool>(format_arg));
+  }
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/visit_format_arg.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/visit_format_arg.pass.cpp
new file mode 100644
index 0000000..ea2680a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.arg/visit_format_arg.pass.cpp
@@ -0,0 +1,354 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <format>
+
+// template<class Visitor, class Context>
+//   see below visit_format_arg(Visitor&& vis, basic_format_arg<Context> arg);
+
+#include <format>
+#include <cassert>
+#include <type_traits>
+
+#include "constexpr_char_traits.h"
+#include "test_macros.h"
+#include "make_string.h"
+#include "min_allocator.h"
+
+template <class Context, class To, class From>
+void test(From value) {
+  auto store = std::make_format_args<Context>(value);
+  std::basic_format_args<Context> format_args{store};
+
+  LIBCPP_ASSERT(format_args.__size() == 1);
+  assert(format_args.get(0));
+
+  auto result = std::visit_format_arg(
+      [v = To(value)](auto a) -> To {
+        if constexpr (std::is_same_v<To, decltype(a)>) {
+          assert(v == a);
+          return a;
+        } else {
+          assert(false);
+          return {};
+        }
+      },
+      format_args.get(0));
+
+  using ct = std::common_type_t<From, To>;
+  assert(static_cast<ct>(result) == static_cast<ct>(value));
+}
+
+// Some types, as an extension, are stored in the variant. The Standard
+// requires them to be observed as a handle.
+template <class Context, class T>
+void test_handle(T value) {
+  auto store = std::make_format_args<Context>(value);
+  std::basic_format_args<Context> format_args{store};
+
+  LIBCPP_ASSERT(format_args.__size() == 1);
+  assert(format_args.get(0));
+
+  std::visit_format_arg(
+      [](auto a) { assert((std::is_same_v<decltype(a), typename std::basic_format_arg<Context>::handle>)); },
+      format_args.get(0));
+}
+
+// Test specific for string and string_view.
+//
+// Since both result in a string_view there's no need to pass this as a
+// template argument.
+template <class Context, class From>
+void test_string_view(From value) {
+  auto store = std::make_format_args<Context>(value);
+  std::basic_format_args<Context> format_args{store};
+
+  LIBCPP_ASSERT(format_args.__size() == 1);
+  assert(format_args.get(0));
+
+  using CharT = typename Context::char_type;
+  using To = std::basic_string_view<CharT>;
+  using V = std::basic_string<CharT>;
+  auto result = std::visit_format_arg(
+      [v = V(value.begin(), value.end())](auto a) -> To {
+        if constexpr (std::is_same_v<To, decltype(a)>) {
+          assert(v == a);
+          return a;
+        } else {
+          assert(false);
+          return {};
+        }
+      },
+      format_args.get(0));
+
+  assert(std::equal(value.begin(), value.end(), result.begin(), result.end()));
+}
+
+template <class CharT>
+void test() {
+  using Context = std::basic_format_context<CharT*, CharT>;
+  std::basic_string<CharT> empty;
+  std::basic_string<CharT> str = MAKE_STRING(CharT, "abc");
+
+  // Test boolean types.
+
+  test<Context, bool>(true);
+  test<Context, bool>(false);
+
+  // Test CharT types.
+
+  test<Context, CharT, CharT>('a');
+  test<Context, CharT, CharT>('z');
+  test<Context, CharT, CharT>('0');
+  test<Context, CharT, CharT>('9');
+
+  // Test char types.
+
+  if (std::is_same_v<CharT, char>) {
+    // char to char -> char
+    test<Context, CharT, char>('a');
+    test<Context, CharT, char>('z');
+    test<Context, CharT, char>('0');
+    test<Context, CharT, char>('9');
+  } else {
+    if (std::is_same_v<CharT, wchar_t>) {
+      // char to wchar_t -> wchar_t
+      test<Context, wchar_t, char>('a');
+      test<Context, wchar_t, char>('z');
+      test<Context, wchar_t, char>('0');
+      test<Context, wchar_t, char>('9');
+    } else if (std::is_signed_v<char>) {
+      // char to CharT -> int
+      // This happens when CharT is a char8_t, char16_t, or char32_t and char
+      // is a signed type.
+      // Note if sizeof(CharT) > sizeof(int) this test fails. If there are
+      // platforms where that occurs extra tests need to be added for char32_t
+      // testing it against a long long.
+      test<Context, int, char>('a');
+      test<Context, int, char>('z');
+      test<Context, int, char>('0');
+      test<Context, int, char>('9');
+    } else {
+      // char to CharT -> unsigned
+      // This happens when CharT is a char8_t, char16_t, or char32_t and char
+      // is an unsigned type.
+      // Note if sizeof(CharT) > sizeof(unsigned) this test fails. If there are
+      // platforms where that occurs extra tests need to be added for char32_t
+      // testing it against an unsigned long long.
+      test<Context, unsigned, char>('a');
+      test<Context, unsigned, char>('z');
+      test<Context, unsigned, char>('0');
+      test<Context, unsigned, char>('9');
+    }
+  }
+
+  // Test signed integer types.
+
+  test<Context, int, signed char>(std::numeric_limits<signed char>::min());
+  test<Context, int, signed char>(0);
+  test<Context, int, signed char>(std::numeric_limits<signed char>::max());
+
+  test<Context, int, short>(std::numeric_limits<short>::min());
+  test<Context, int, short>(std::numeric_limits<signed char>::min());
+  test<Context, int, short>(0);
+  test<Context, int, short>(std::numeric_limits<signed char>::max());
+  test<Context, int, short>(std::numeric_limits<short>::max());
+
+  test<Context, int, int>(std::numeric_limits<int>::min());
+  test<Context, int, int>(std::numeric_limits<short>::min());
+  test<Context, int, int>(std::numeric_limits<signed char>::min());
+  test<Context, int, int>(0);
+  test<Context, int, int>(std::numeric_limits<signed char>::max());
+  test<Context, int, int>(std::numeric_limits<short>::max());
+  test<Context, int, int>(std::numeric_limits<int>::max());
+
+  using LongToType =
+      std::conditional_t<sizeof(long) == sizeof(int), int, long long>;
+
+  test<Context, LongToType, long>(std::numeric_limits<long>::min());
+  test<Context, LongToType, long>(std::numeric_limits<int>::min());
+  test<Context, LongToType, long>(std::numeric_limits<short>::min());
+  test<Context, LongToType, long>(std::numeric_limits<signed char>::min());
+  test<Context, LongToType, long>(0);
+  test<Context, LongToType, long>(std::numeric_limits<signed char>::max());
+  test<Context, LongToType, long>(std::numeric_limits<short>::max());
+  test<Context, LongToType, long>(std::numeric_limits<int>::max());
+  test<Context, LongToType, long>(std::numeric_limits<long>::max());
+
+  test<Context, long long, long long>(std::numeric_limits<long long>::min());
+  test<Context, long long, long long>(std::numeric_limits<long>::min());
+  test<Context, long long, long long>(std::numeric_limits<int>::min());
+  test<Context, long long, long long>(std::numeric_limits<short>::min());
+  test<Context, long long, long long>(std::numeric_limits<signed char>::min());
+  test<Context, long long, long long>(0);
+  test<Context, long long, long long>(std::numeric_limits<signed char>::max());
+  test<Context, long long, long long>(std::numeric_limits<short>::max());
+  test<Context, long long, long long>(std::numeric_limits<int>::max());
+  test<Context, long long, long long>(std::numeric_limits<long>::max());
+  test<Context, long long, long long>(std::numeric_limits<long long>::max());
+
+#ifndef TEST_HAS_NO_INT128
+  test_handle<Context, __int128_t>(0);
+#endif // TEST_HAS_NO_INT128
+
+  // Test unsigned integer types.
+
+  test<Context, unsigned, unsigned char>(0);
+  test<Context, unsigned, unsigned char>(
+      std::numeric_limits<unsigned char>::max());
+
+  test<Context, unsigned, unsigned short>(0);
+  test<Context, unsigned, unsigned short>(
+      std::numeric_limits<unsigned char>::max());
+  test<Context, unsigned, unsigned short>(
+      std::numeric_limits<unsigned short>::max());
+
+  test<Context, unsigned, unsigned>(0);
+  test<Context, unsigned, unsigned>(std::numeric_limits<unsigned char>::max());
+  test<Context, unsigned, unsigned>(std::numeric_limits<unsigned short>::max());
+  test<Context, unsigned, unsigned>(std::numeric_limits<unsigned>::max());
+
+  using UnsignedLongToType =
+      std::conditional_t<sizeof(unsigned long) == sizeof(unsigned), unsigned,
+                         unsigned long long>;
+
+  test<Context, UnsignedLongToType, unsigned long>(0);
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned char>::max());
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned short>::max());
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned>::max());
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned long>::max());
+
+  test<Context, unsigned long long, unsigned long long>(0);
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned char>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned short>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned long>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned long long>::max());
+
+#ifndef TEST_HAS_NO_INT128
+  test_handle<Context, __uint128_t>(0);
+#endif // TEST_HAS_NO_INT128
+
+  // Test floating point types.
+
+  test<Context, float, float>(-std::numeric_limits<float>::max());
+  test<Context, float, float>(-std::numeric_limits<float>::min());
+  test<Context, float, float>(-0.0);
+  test<Context, float, float>(0.0);
+  test<Context, float, float>(std::numeric_limits<float>::min());
+  test<Context, float, float>(std::numeric_limits<float>::max());
+
+  test<Context, double, double>(-std::numeric_limits<double>::max());
+  test<Context, double, double>(-std::numeric_limits<double>::min());
+  test<Context, double, double>(-0.0);
+  test<Context, double, double>(0.0);
+  test<Context, double, double>(std::numeric_limits<double>::min());
+  test<Context, double, double>(std::numeric_limits<double>::max());
+
+  test<Context, long double, long double>(
+      -std::numeric_limits<long double>::max());
+  test<Context, long double, long double>(
+      -std::numeric_limits<long double>::min());
+  test<Context, long double, long double>(-0.0);
+  test<Context, long double, long double>(0.0);
+  test<Context, long double, long double>(
+      std::numeric_limits<long double>::min());
+  test<Context, long double, long double>(
+      std::numeric_limits<long double>::max());
+
+  // Test const CharT pointer types.
+
+  test<Context, const CharT*, const CharT*>(empty.c_str());
+  test<Context, const CharT*, const CharT*>(str.c_str());
+
+  // Test string_view types.
+
+  {
+    using From = std::basic_string_view<CharT>;
+
+    test_string_view<Context>(From());
+    test_string_view<Context>(From(empty.c_str()));
+    test_string_view<Context>(From(str.c_str()));
+  }
+
+  {
+    using From = std::basic_string_view<CharT, constexpr_char_traits<CharT>>;
+
+    test_string_view<Context>(From());
+    test_string_view<Context>(From(empty.c_str()));
+    test_string_view<Context>(From(str.c_str()));
+  }
+
+  // Test string types.
+
+  {
+    using From = std::basic_string<CharT>;
+
+    test_string_view<Context>(From());
+    test_string_view<Context>(From(empty.c_str()));
+    test_string_view<Context>(From(str.c_str()));
+  }
+
+  {
+    using From = std::basic_string<CharT, constexpr_char_traits<CharT>,
+                                   std::allocator<CharT>>;
+
+    test_string_view<Context>(From());
+    test_string_view<Context>(From(empty.c_str()));
+    test_string_view<Context>(From(str.c_str()));
+  }
+
+  {
+    using From =
+        std::basic_string<CharT, std::char_traits<CharT>, min_allocator<CharT>>;
+
+    test_string_view<Context>(From());
+    test_string_view<Context>(From(empty.c_str()));
+    test_string_view<Context>(From(str.c_str()));
+  }
+
+  {
+    using From = std::basic_string<CharT, constexpr_char_traits<CharT>,
+                                   min_allocator<CharT>>;
+
+    test_string_view<Context>(From());
+    test_string_view<Context>(From(empty.c_str()));
+    test_string_view<Context>(From(str.c_str()));
+  }
+
+  // Test pointer types.
+
+  test<Context, const void*>(nullptr);
+  int i = 0;
+  test<Context, const void*>(static_cast<void*>(&i));
+  const int ci = 0;
+  test<Context, const void*>(static_cast<const void*>(&ci));
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/ctor.pass.cpp
new file mode 100644
index 0000000..9af52fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/ctor.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// basic_format_args() noexcept;
+// template<class... Args>
+//   basic_format_args(const format-arg-store<Context, Args...>& store) noexcept;
+
+#include <format>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+void test() {
+  using Context = std::basic_format_context<CharT*, CharT>;
+  {
+    ASSERT_NOEXCEPT(std::basic_format_args<Context>{});
+
+    std::basic_format_args<Context> format_args{};
+    assert(!format_args.get(0));
+  }
+  {
+    auto store = std::make_format_args<Context>(1);
+    ASSERT_NOEXCEPT(std::basic_format_args<Context>{store});
+    std::basic_format_args<Context> format_args{store};
+    assert(format_args.get(0));
+    assert(!format_args.get(1));
+  }
+  {
+    auto store = std::make_format_args<Context>(1, 'c');
+    ASSERT_NOEXCEPT(std::basic_format_args<Context>{store});
+    std::basic_format_args<Context> format_args{store};
+    assert(format_args.get(0));
+    assert(format_args.get(1));
+    assert(!format_args.get(2));
+  }
+  {
+    auto store = std::make_format_args<Context>(1, 'c', nullptr);
+    ASSERT_NOEXCEPT(std::basic_format_args<Context>{store});
+    std::basic_format_args<Context> format_args{store};
+    assert(format_args.get(0));
+    assert(format_args.get(1));
+    assert(format_args.get(2));
+    assert(!format_args.get(3));
+  }
+}
+
+void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/get.pass.cpp
new file mode 100644
index 0000000..35bee3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/get.pass.cpp
@@ -0,0 +1,301 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <format>
+
+// basic_format_arg<Context> get(size_t i) const noexcept;
+
+#include <format>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "make_string.h"
+
+template <class Context, class To, class From>
+void test(From value) {
+  auto store = std::make_format_args<Context>(value);
+  const std::basic_format_args<Context> format_args{store};
+
+  std::visit_format_arg(
+      [v = To(value)](auto a) {
+        if constexpr (std::is_same_v<To, decltype(a)>)
+          assert(v == a);
+        else
+          assert(false);
+      },
+      format_args.get(0));
+}
+
+// Some types, as an extension, are stored in the variant. The Standard
+// requires them to be observed as a handle.
+template <class Context, class T>
+void test_handle(T value) {
+  auto store = std::make_format_args<Context>(value);
+  std::basic_format_args<Context> format_args{store};
+
+  std::visit_format_arg(
+      [](auto a) { assert((std::is_same_v<decltype(a), typename std::basic_format_arg<Context>::handle>)); },
+      format_args.get(0));
+}
+
+// Test specific for string and string_view.
+//
+// Since both result in a string_view there's no need to pass this as a
+// template argument.
+template <class Context, class From>
+void test_string_view(From value) {
+  auto store = std::make_format_args<Context>(value);
+  const std::basic_format_args<Context> format_args{store};
+
+  using CharT = typename Context::char_type;
+  using To = std::basic_string_view<CharT>;
+  using V = std::basic_string<CharT>;
+  std::visit_format_arg(
+      [v = V(value.begin(), value.end())](auto a) {
+        if constexpr (std::is_same_v<To, decltype(a)>)
+          assert(v == a);
+        else
+          assert(false);
+      },
+      format_args.get(0));
+}
+
+template <class CharT>
+void test() {
+  using Context = std::basic_format_context<CharT*, CharT>;
+  {
+    const std::basic_format_args<Context> format_args{};
+    ASSERT_NOEXCEPT(format_args.get(0));
+    assert(!format_args.get(0));
+  }
+
+  using char_type = typename Context::char_type;
+  std::basic_string<char_type> empty;
+  std::basic_string<char_type> str = MAKE_STRING(char_type, "abc");
+
+  // Test boolean types.
+
+  test<Context, bool>(true);
+  test<Context, bool>(false);
+
+  // Test char_type types.
+
+  test<Context, char_type, char_type>('a');
+  test<Context, char_type, char_type>('z');
+  test<Context, char_type, char_type>('0');
+  test<Context, char_type, char_type>('9');
+
+  // Test char types.
+
+  if (std::is_same_v<char_type, char>) {
+    // char to char -> char
+    test<Context, char_type, char>('a');
+    test<Context, char_type, char>('z');
+    test<Context, char_type, char>('0');
+    test<Context, char_type, char>('9');
+  } else {
+    if (std::is_same_v<char_type, wchar_t>) {
+      // char to wchar_t -> wchar_t
+      test<Context, wchar_t, char>('a');
+      test<Context, wchar_t, char>('z');
+      test<Context, wchar_t, char>('0');
+      test<Context, wchar_t, char>('9');
+    } else if (std::is_signed_v<char>) {
+      // char to char_type -> int
+      // This happens when Context::char_type is a char8_t, char16_t, or
+      // char32_t and char is a signed type.
+      // Note if sizeof(char_type) > sizeof(int) this test fails. If there are
+      // platforms where that occurs extra tests need to be added for char32_t
+      // testing it against a long long.
+      test<Context, int, char>('a');
+      test<Context, int, char>('z');
+      test<Context, int, char>('0');
+      test<Context, int, char>('9');
+    } else {
+      // char to char_type -> unsigned
+      // This happens when Context::char_type is a char8_t, char16_t, or
+      // char32_t and char is an unsigned type.
+      // Note if sizeof(char_type) > sizeof(unsigned) this test fails. If there
+      // are platforms where that occurs extra tests need to be added for
+      // char32_t testing it against an unsigned long long.
+      test<Context, unsigned, char>('a');
+      test<Context, unsigned, char>('z');
+      test<Context, unsigned, char>('0');
+      test<Context, unsigned, char>('9');
+    }
+  }
+
+  // Test signed integer types.
+
+  test<Context, int, signed char>(std::numeric_limits<signed char>::min());
+  test<Context, int, signed char>(0);
+  test<Context, int, signed char>(std::numeric_limits<signed char>::max());
+
+  test<Context, int, short>(std::numeric_limits<short>::min());
+  test<Context, int, short>(std::numeric_limits<signed char>::min());
+  test<Context, int, short>(0);
+  test<Context, int, short>(std::numeric_limits<signed char>::max());
+  test<Context, int, short>(std::numeric_limits<short>::max());
+
+  test<Context, int, int>(std::numeric_limits<int>::min());
+  test<Context, int, int>(std::numeric_limits<short>::min());
+  test<Context, int, int>(std::numeric_limits<signed char>::min());
+  test<Context, int, int>(0);
+  test<Context, int, int>(std::numeric_limits<signed char>::max());
+  test<Context, int, int>(std::numeric_limits<short>::max());
+  test<Context, int, int>(std::numeric_limits<int>::max());
+
+  using LongToType =
+      std::conditional_t<sizeof(long) == sizeof(int), int, long long>;
+
+  test<Context, LongToType, long>(std::numeric_limits<long>::min());
+  test<Context, LongToType, long>(std::numeric_limits<int>::min());
+  test<Context, LongToType, long>(std::numeric_limits<short>::min());
+  test<Context, LongToType, long>(std::numeric_limits<signed char>::min());
+  test<Context, LongToType, long>(0);
+  test<Context, LongToType, long>(std::numeric_limits<signed char>::max());
+  test<Context, LongToType, long>(std::numeric_limits<short>::max());
+  test<Context, LongToType, long>(std::numeric_limits<int>::max());
+  test<Context, LongToType, long>(std::numeric_limits<long>::max());
+
+  test<Context, long long, long long>(std::numeric_limits<long long>::min());
+  test<Context, long long, long long>(std::numeric_limits<long>::min());
+  test<Context, long long, long long>(std::numeric_limits<int>::min());
+  test<Context, long long, long long>(std::numeric_limits<short>::min());
+  test<Context, long long, long long>(std::numeric_limits<signed char>::min());
+  test<Context, long long, long long>(0);
+  test<Context, long long, long long>(std::numeric_limits<signed char>::max());
+  test<Context, long long, long long>(std::numeric_limits<short>::max());
+  test<Context, long long, long long>(std::numeric_limits<int>::max());
+  test<Context, long long, long long>(std::numeric_limits<long>::max());
+  test<Context, long long, long long>(std::numeric_limits<long long>::max());
+
+#ifndef TEST_HAS_NO_INT128
+  test_handle<Context, __int128_t>(0);
+#endif // TEST_HAS_NO_INT128
+
+  // Test unsigned integer types.
+
+  test<Context, unsigned, unsigned char>(0);
+  test<Context, unsigned, unsigned char>(
+      std::numeric_limits<unsigned char>::max());
+
+  test<Context, unsigned, unsigned short>(0);
+  test<Context, unsigned, unsigned short>(
+      std::numeric_limits<unsigned char>::max());
+  test<Context, unsigned, unsigned short>(
+      std::numeric_limits<unsigned short>::max());
+
+  test<Context, unsigned, unsigned>(0);
+  test<Context, unsigned, unsigned>(std::numeric_limits<unsigned char>::max());
+  test<Context, unsigned, unsigned>(std::numeric_limits<unsigned short>::max());
+  test<Context, unsigned, unsigned>(std::numeric_limits<unsigned>::max());
+
+  using UnsignedLongToType =
+      std::conditional_t<sizeof(unsigned long) == sizeof(unsigned), unsigned,
+                         unsigned long long>;
+
+  test<Context, UnsignedLongToType, unsigned long>(0);
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned char>::max());
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned short>::max());
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned>::max());
+  test<Context, UnsignedLongToType, unsigned long>(
+      std::numeric_limits<unsigned long>::max());
+
+  test<Context, unsigned long long, unsigned long long>(0);
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned char>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned short>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned long>::max());
+  test<Context, unsigned long long, unsigned long long>(
+      std::numeric_limits<unsigned long long>::max());
+
+#ifndef TEST_HAS_NO_INT128
+  test_handle<Context, __uint128_t>(0);
+#endif // TEST_HAS_NO_INT128
+
+  // Test floating point types.
+
+  test<Context, float, float>(-std::numeric_limits<float>::max());
+  test<Context, float, float>(-std::numeric_limits<float>::min());
+  test<Context, float, float>(-0.0);
+  test<Context, float, float>(0.0);
+  test<Context, float, float>(std::numeric_limits<float>::min());
+  test<Context, float, float>(std::numeric_limits<float>::max());
+
+  test<Context, double, double>(-std::numeric_limits<double>::max());
+  test<Context, double, double>(-std::numeric_limits<double>::min());
+  test<Context, double, double>(-0.0);
+  test<Context, double, double>(0.0);
+  test<Context, double, double>(std::numeric_limits<double>::min());
+  test<Context, double, double>(std::numeric_limits<double>::max());
+
+  test<Context, long double, long double>(
+      -std::numeric_limits<long double>::max());
+  test<Context, long double, long double>(
+      -std::numeric_limits<long double>::min());
+  test<Context, long double, long double>(-0.0);
+  test<Context, long double, long double>(0.0);
+  test<Context, long double, long double>(
+      std::numeric_limits<long double>::min());
+  test<Context, long double, long double>(
+      std::numeric_limits<long double>::max());
+
+  // Test const char_type pointer types.
+
+  test<Context, const char_type*, const char_type*>(empty.c_str());
+  test<Context, const char_type*, const char_type*>(str.c_str());
+
+  // Test string_view types.
+
+  test<Context, std::basic_string_view<char_type>>(
+      std::basic_string_view<char_type>());
+  test<Context, std::basic_string_view<char_type>,
+       std::basic_string_view<char_type>>(empty);
+  test<Context, std::basic_string_view<char_type>,
+       std::basic_string_view<char_type>>(str);
+
+  // Test string types.
+
+  test<Context, std::basic_string_view<char_type>>(
+      std::basic_string<char_type>());
+  test<Context, std::basic_string_view<char_type>,
+       std::basic_string<char_type>>(empty);
+  test<Context, std::basic_string_view<char_type>,
+       std::basic_string<char_type>>(str);
+
+  // Test pointer types.
+
+  test<Context, const void*>(nullptr);
+}
+
+void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/types.compile.pass.cpp
new file mode 100644
index 0000000..9ca1d31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.arguments/format.args/types.compile.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// Namespace std typedefs:
+// using format_args = basic_format_args<format_context>;
+// using wformat_args = basic_format_args<wformat_context>;
+
+#include <format>
+#include <vector>
+#include <type_traits>
+
+#include "test_macros.h"
+
+static_assert(std::is_same_v<std::format_args,
+                             std::basic_format_args<std::format_context>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::is_same_v<std::wformat_args,
+                             std::basic_format_args<std::wformat_context>>);
+#endif
+
+// Required for MSVC internal test runner compatibility.
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.error/format.error.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.error/format.error.pass.cpp
new file mode 100644
index 0000000..e3d3c48
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.error/format.error.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <format>
+
+// class format_error;
+
+#include <format>
+#include <type_traits>
+#include <cstring>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  static_assert(std::is_base_of_v<std::runtime_error, std::format_error>);
+  static_assert(std::is_polymorphic_v<std::format_error>);
+
+  {
+    const char* msg = "format_error message c-string";
+    std::format_error e(msg);
+    assert(std::strcmp(e.what(), msg) == 0);
+    std::format_error e2(e);
+    assert(std::strcmp(e2.what(), msg) == 0);
+    e2 = e;
+    assert(std::strcmp(e2.what(), msg) == 0);
+  }
+  {
+    std::string msg("format_error message std::string");
+    std::format_error e(msg);
+    assert(e.what() == msg);
+    std::format_error e2(e);
+    assert(e2.what() == msg);
+    e2 = e;
+    assert(e2.what() == msg);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/ctor.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/ctor.verify.cpp
new file mode 100644
index 0000000..8f5404d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/ctor.verify.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// libc++ supports basic_format_string in C++20 as an extension
+// UNSUPPORTED: !stdlib=libc++ && c++20
+
+// <format>
+
+// template<class charT, class... Args>
+// class basic_format_string<charT, type_identity_t<Args>...>
+//
+// template<class T> consteval basic_format_string(const T& s);
+//
+// This constructor does the compile-time format string validation for the
+// std::format* functions.
+
+#include <format>
+
+#include <string_view>
+
+#include "test_macros.h"
+
+void run() {
+  (void)std::basic_format_string<char>{"foo"};
+  (void)std::basic_format_string<char>{"{}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+  (void)std::basic_format_string<char, int>{"{0:{0}P}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+  (void)std::basic_format_string<char, int>{"{0:{0}}"};
+  (void)std::basic_format_string<char, float>{"{0:{0}}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+  (void)std::basic_format_string<char, int>{"{.3}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  (void)std::basic_format_string<wchar_t>{L"foo"};
+  (void)std::basic_format_string<wchar_t>{L"{}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+  (void)std::basic_format_string<wchar_t, int>{L"{0:{0}P}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+  (void)std::basic_format_string<wchar_t, int>{L"{0:{0}}"};
+  (void)std::basic_format_string<wchar_t, float>{L"{0:{0}}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+  (void)std::basic_format_string<wchar_t, int>{L"{.3}"}; // expected-error-re {{call to consteval function{{.*}}is not a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/get.pass.cpp
new file mode 100644
index 0000000..bf7e2ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/get.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// libc++ supports basic_format_string in C++20 as an extension
+// UNSUPPORTED: !stdlib=libc++ && c++20
+
+// <format>
+
+// template<class charT, class... Args>
+// class basic_format_string<charT, type_identity_t<Args>...>
+//
+// constexpr basic_string_view<charT> get() const noexcept { return str; }
+
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <string_view>
+
+#include "test_macros.h"
+#include "make_string.h"
+
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+constexpr bool test() {
+  assert((std::basic_format_string<CharT>{CSTR("foo")}.get() == SV("foo")));
+  assert((std::basic_format_string<CharT, int>{CSTR("{}")}.get() == SV("{}")));
+  assert((std::basic_format_string<CharT, int, float>{CSTR("{} {:01.23L}")}.get() == SV("{} {:01.23L}")));
+
+  // Embedded NUL character
+  assert((std::basic_format_string<CharT, void*, double>{SV("{}\0{}")}.get() == SV("{}\0{}")));
+  return true;
+}
+
+int main(int, char**) {
+  test<char>();
+  static_assert(test<char>());
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+  static_assert(test<wchar_t>());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/types.compile.pass.cpp
new file mode 100644
index 0000000..3ebd2bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.fmt.string/types.compile.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// libc++ supports basic_format_string in C++20 as an extension
+// UNSUPPORTED: !stdlib=libc++ && c++20
+
+// <format>
+
+//  template<class... Args>
+//    using format_string =
+//      basic_format_string<char, type_identity_t<Args>...>;
+//  template<class... Args>
+//    using wformat_string =
+//      basic_format_string<wchar_t, type_identity_t<Args>...>;
+
+#include <format>
+
+#include <concepts>
+
+#include "test_macros.h"
+
+static_assert(std::same_as<std::format_string<>, std::basic_format_string<char>>);
+static_assert(std::same_as<std::format_string<int>, std::basic_format_string<char, int>>);
+static_assert(std::same_as<std::format_string<int, float>, std::basic_format_string<char, int, float>>);
+static_assert(std::same_as<std::format_string<int, float, void*>, std::basic_format_string<char, int, float, void*>>);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::same_as<std::wformat_string<>, std::basic_format_string<wchar_t>>);
+static_assert(std::same_as<std::wformat_string<int>, std::basic_format_string<wchar_t, int>>);
+static_assert(std::same_as<std::wformat_string<int, float>, std::basic_format_string<wchar_t, int, float>>);
+static_assert(
+    std::same_as<std::wformat_string<int, float, void*>, std::basic_format_string<wchar_t, int, float, void*>>);
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formattable/concept.formattable.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formattable/concept.formattable.compile.pass.cpp
new file mode 100644
index 0000000..b0abc2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formattable/concept.formattable.compile.pass.cpp
@@ -0,0 +1,350 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// template<class T, class charT>
+// concept formattable = ...
+
+#include <array>
+#include <bitset>
+#include <bitset>
+#include <chrono>
+#include <complex>
+#include <concepts>
+#include <deque>
+#include <format>
+#include <forward_list>
+#include <list>
+#include <memory>
+#include <map>
+#include <optional>
+#include <queue>
+#include <set>
+#include <stack>
+#include <span>
+#include <tuple>
+#include <type_traits>
+#include <unordered_map>
+#include <unordered_set>
+#include <valarray>
+#include <variant>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
+#  include <filesystem>
+#endif
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <regex>
+#endif
+#ifndef TEST_HAS_NO_THREADS
+#  include <thread>
+#endif
+
+template <class T, class CharT>
+void assert_is_not_formattable() {
+  static_assert(!std::formattable<T, CharT>);
+}
+
+template <class T, class CharT>
+void assert_is_formattable() {
+  // Only formatters for CharT == char || CharT == wchar_t are enabled for the
+  // standard formatters. When CharT is a different type the formatter should
+  // be disabled.
+  if constexpr (std::same_as<CharT, char>
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+                || std::same_as<CharT, wchar_t>
+#endif
+  )
+    static_assert(std::formattable<T, CharT>);
+  else
+    assert_is_not_formattable<T, CharT>();
+}
+
+// Tests for P0645 Text Formatting
+template <class CharT>
+void test_P0645() {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  // Tests the special formatter that converts a char to a wchar_t.
+  assert_is_formattable<char, wchar_t>();
+#endif
+  assert_is_formattable<CharT, CharT>();
+
+  assert_is_formattable<CharT*, CharT>();
+  assert_is_formattable<const CharT*, CharT>();
+  assert_is_formattable<CharT[42], CharT>();
+  if constexpr (!std::same_as<CharT, int>) { // string and string_view only work with proper character types
+    assert_is_formattable<std::basic_string<CharT>, CharT>();
+    assert_is_formattable<std::basic_string_view<CharT>, CharT>();
+  }
+
+  assert_is_formattable<bool, CharT>();
+
+  assert_is_formattable<signed char, CharT>();
+  assert_is_formattable<signed short, CharT>();
+  assert_is_formattable<signed int, CharT>();
+  assert_is_formattable<signed long, CharT>();
+  assert_is_formattable<signed long long, CharT>();
+#ifndef TEST_HAS_NO_INT128
+  assert_is_formattable<__int128_t, CharT>();
+#endif
+
+  assert_is_formattable<unsigned char, CharT>();
+  assert_is_formattable<unsigned short, CharT>();
+  assert_is_formattable<unsigned int, CharT>();
+  assert_is_formattable<unsigned long, CharT>();
+  assert_is_formattable<unsigned long long, CharT>();
+#ifndef TEST_HAS_NO_INT128
+  assert_is_formattable<__uint128_t, CharT>();
+#endif
+
+  assert_is_formattable<float, CharT>();
+  assert_is_formattable<double, CharT>();
+  assert_is_formattable<long double, CharT>();
+
+  assert_is_formattable<std::nullptr_t, CharT>();
+  assert_is_formattable<void*, CharT>();
+  assert_is_formattable<const void*, CharT>();
+}
+
+// Tests for P1361 Integration of chrono with text formatting
+//
+// Some tests are commented out since these types haven't been implemented in
+// chrono yet. After P1361 has been implemented these formatters should be all
+// enabled.
+template <class CharT>
+void test_P1361() {
+// The chrono formatters require localization support.
+// [time.format]/7
+//   If the chrono-specs is omitted, the chrono object is formatted as if by
+//   streaming it to std::ostringstream os with the formatting
+//   locale imbued and copying os.str() through the output iterator of the
+//   context with additional padding and adjustments as specified by the format
+//   specifiers.
+// In libc++ std:::ostringstream requires localization support.
+#ifndef TEST_HAS_NO_LOCALIZATION
+
+  assert_is_formattable<std::chrono::microseconds, CharT>();
+
+  assert_is_not_formattable<std::chrono::sys_time<std::chrono::microseconds>, CharT>();
+  //assert_is_formattable<std::chrono::utc_time<std::chrono::microseconds>, CharT>();
+  //assert_is_formattable<std::chrono::tai_time<std::chrono::microseconds>, CharT>();
+  //assert_is_formattable<std::chrono::gps_time<std::chrono::microseconds>, CharT>();
+  assert_is_not_formattable<std::chrono::file_time<std::chrono::microseconds>, CharT>();
+  assert_is_not_formattable<std::chrono::local_time<std::chrono::microseconds>, CharT>();
+
+  assert_is_formattable<std::chrono::day, CharT>();
+  assert_is_formattable<std::chrono::month, CharT>();
+  assert_is_formattable<std::chrono::year, CharT>();
+
+  assert_is_formattable<std::chrono::weekday, CharT>();
+  assert_is_formattable<std::chrono::weekday_indexed, CharT>();
+  assert_is_formattable<std::chrono::weekday_last, CharT>();
+
+  assert_is_formattable<std::chrono::month_day, CharT>();
+  assert_is_formattable<std::chrono::month_day_last, CharT>();
+  assert_is_formattable<std::chrono::month_weekday, CharT>();
+  assert_is_formattable<std::chrono::month_weekday_last, CharT>();
+
+  assert_is_formattable<std::chrono::year_month, CharT>();
+  assert_is_formattable<std::chrono::year_month_day, CharT>();
+  assert_is_formattable<std::chrono::year_month_day_last, CharT>();
+  assert_is_formattable<std::chrono::year_month_weekday, CharT>();
+  assert_is_formattable<std::chrono::year_month_weekday_last, CharT>();
+
+  assert_is_not_formattable<std::chrono::hh_mm_ss<std::chrono::microseconds>, CharT>();
+
+  //assert_is_formattable<std::chrono::sys_info, CharT>();
+  //assert_is_formattable<std::chrono::local_info, CharT>();
+
+  //assert_is_formattable<std::chrono::zoned_time, CharT>();
+
+#endif // TEST_HAS_NO_LOCALIZATION
+}
+
+// Tests for P1636 Formatters for library types
+//
+// The paper hasn't been voted in so currently all formatters are disabled.
+// TODO validate whether the test is correct after the paper has been accepted.
+template <class CharT>
+void test_P1636() {
+  assert_is_not_formattable<std::basic_streambuf<CharT>, CharT>();
+  assert_is_not_formattable<std::bitset<42>, CharT>();
+  assert_is_not_formattable<std::complex<double>, CharT>();
+  assert_is_not_formattable<std::error_code, CharT>();
+#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
+  assert_is_not_formattable<std::filesystem::path, CharT>();
+#endif
+  assert_is_not_formattable<std::shared_ptr<int>, CharT>();
+#ifndef TEST_HAS_NO_LOCALIZATION
+  if constexpr (!std::same_as<CharT, int>) // sub_match only works with proper character types
+    assert_is_not_formattable<std::sub_match<CharT*>, CharT>();
+#endif
+#ifndef TEST_HAS_NO_THREADS
+  assert_is_not_formattable<std::thread::id, CharT>();
+#endif
+  assert_is_not_formattable<std::unique_ptr<int>, CharT>();
+}
+
+template <class CharT, class Vector>
+void test_P2286_vector_bool() {
+  assert_is_formattable<Vector, CharT>();
+  assert_is_formattable<typename Vector::reference, CharT>();
+}
+
+// Tests for P2286 Formatting ranges
+template <class CharT>
+void test_P2286() {
+  assert_is_formattable<std::array<int, 42>, CharT>();
+  assert_is_formattable<std::vector<int>, CharT>();
+  assert_is_formattable<std::deque<int>, CharT>();
+  assert_is_formattable<std::forward_list<int>, CharT>();
+  assert_is_formattable<std::list<int>, CharT>();
+
+  assert_is_formattable<std::set<int>, CharT>();
+  assert_is_formattable<std::map<int, int>, CharT>();
+  assert_is_formattable<std::multiset<int>, CharT>();
+  assert_is_formattable<std::multimap<int, int>, CharT>();
+
+  assert_is_formattable<std::unordered_set<int>, CharT>();
+  assert_is_formattable<std::unordered_map<int, int>, CharT>();
+  assert_is_formattable<std::unordered_multiset<int>, CharT>();
+  assert_is_formattable<std::unordered_multimap<int, int>, CharT>();
+
+  assert_is_formattable<std::stack<int>, CharT>();
+  assert_is_formattable<std::queue<int>, CharT>();
+  assert_is_formattable<std::priority_queue<int>, CharT>();
+
+  assert_is_formattable<std::span<int>, CharT>();
+
+  assert_is_formattable<std::valarray<int>, CharT>();
+
+  assert_is_formattable<std::pair<int, int>, CharT>();
+  assert_is_formattable<std::tuple<int>, CharT>();
+
+  test_P2286_vector_bool<CharT, std::vector<bool>>();
+  test_P2286_vector_bool<CharT, std::vector<bool, std::allocator<bool>>>();
+  test_P2286_vector_bool<CharT, std::vector<bool, min_allocator<bool>>>();
+}
+
+class c {
+  void f();
+  void fc() const;
+  static void sf();
+};
+enum e { a };
+enum class ec { a };
+template <class CharT>
+void test_disabled() {
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  assert_is_not_formattable<const char*, wchar_t>();
+#endif
+  assert_is_not_formattable<const char*, char8_t>();
+  assert_is_not_formattable<const char*, char16_t>();
+  assert_is_not_formattable<const char*, char32_t>();
+
+  assert_is_not_formattable<c, CharT>();
+  assert_is_not_formattable<const c, CharT>();
+  assert_is_not_formattable<volatile c, CharT>();
+  assert_is_not_formattable<const volatile c, CharT>();
+
+  assert_is_not_formattable<e, CharT>();
+  assert_is_not_formattable<const e, CharT>();
+  assert_is_not_formattable<volatile e, CharT>();
+  assert_is_not_formattable<const volatile e, CharT>();
+
+  assert_is_not_formattable<ec, CharT>();
+  assert_is_not_formattable<const ec, CharT>();
+  assert_is_not_formattable<volatile ec, CharT>();
+  assert_is_not_formattable<const volatile ec, CharT>();
+
+  assert_is_not_formattable<int*, CharT>();
+  assert_is_not_formattable<const int*, CharT>();
+  assert_is_not_formattable<volatile int*, CharT>();
+  assert_is_not_formattable<const volatile int*, CharT>();
+
+  assert_is_not_formattable<c*, CharT>();
+  assert_is_not_formattable<const c*, CharT>();
+  assert_is_not_formattable<volatile c*, CharT>();
+  assert_is_not_formattable<const volatile c*, CharT>();
+
+  assert_is_not_formattable<e*, CharT>();
+  assert_is_not_formattable<const e*, CharT>();
+  assert_is_not_formattable<volatile e*, CharT>();
+  assert_is_not_formattable<const volatile e*, CharT>();
+
+  assert_is_not_formattable<ec*, CharT>();
+  assert_is_not_formattable<const ec*, CharT>();
+  assert_is_not_formattable<volatile ec*, CharT>();
+  assert_is_not_formattable<const volatile ec*, CharT>();
+
+  assert_is_not_formattable<void (*)(), CharT>();
+  assert_is_not_formattable<void (c::*)(), CharT>();
+  assert_is_not_formattable<void (c::*)() const, CharT>();
+
+  assert_is_not_formattable<std::optional<int>, CharT>();
+  assert_is_not_formattable<std::variant<int>, CharT>();
+
+  assert_is_not_formattable<std::shared_ptr<c>, CharT>();
+  assert_is_not_formattable<std::unique_ptr<c>, CharT>();
+
+  assert_is_not_formattable<std::array<c, 42>, CharT>();
+  assert_is_not_formattable<std::vector<c>, CharT>();
+  assert_is_not_formattable<std::deque<c>, CharT>();
+  assert_is_not_formattable<std::forward_list<c>, CharT>();
+  assert_is_not_formattable<std::list<c>, CharT>();
+
+  assert_is_not_formattable<std::set<c>, CharT>();
+  assert_is_not_formattable<std::map<c, int>, CharT>();
+  assert_is_not_formattable<std::multiset<c>, CharT>();
+  assert_is_not_formattable<std::multimap<c, int>, CharT>();
+
+  assert_is_not_formattable<std::unordered_set<c>, CharT>();
+  assert_is_not_formattable<std::unordered_map<c, int>, CharT>();
+  assert_is_not_formattable<std::unordered_multiset<c>, CharT>();
+  assert_is_not_formattable<std::unordered_multimap<c, int>, CharT>();
+
+  assert_is_not_formattable<std::stack<c>, CharT>();
+  assert_is_not_formattable<std::queue<c>, CharT>();
+  assert_is_not_formattable<std::priority_queue<c>, CharT>();
+
+  assert_is_not_formattable<std::span<c>, CharT>();
+
+  assert_is_not_formattable<std::valarray<c>, CharT>();
+
+  assert_is_not_formattable<std::pair<c, int>, CharT>();
+  assert_is_not_formattable<std::tuple<c>, CharT>();
+
+  assert_is_not_formattable<std::optional<c>, CharT>();
+  assert_is_not_formattable<std::variant<c>, CharT>();
+}
+
+template <class CharT>
+void test() {
+  test_P0645<CharT>();
+  test_P1361<CharT>();
+  test_P1636<CharT>();
+  test_P2286<CharT>();
+  test_disabled<CharT>();
+}
+
+void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+  test<char8_t>();
+  test<char16_t>();
+  test<char32_t>();
+
+  test<int>();
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/advance_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/advance_to.pass.cpp
new file mode 100644
index 0000000..e61188a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/advance_to.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// void advance_to(iterator it);
+
+#include <format>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "test_format_context.h"
+#include "test_iterators.h"
+
+template <class OutIt, class CharT>
+void test(
+    std::basic_format_args<std::basic_format_context<OutIt, CharT>> args) {
+  {
+    std::basic_string<CharT> str[3] = {
+        std::basic_string<CharT>{1}, std::basic_string<CharT>{1}, std::basic_string<CharT>{1}};
+    std::basic_format_context context = test_format_context_create(OutIt{str[0].begin()}, args);
+    *context.out()                    = CharT('a');
+    context.advance_to(OutIt{str[1].begin()});
+    *context.out() = CharT('b');
+    context.advance_to(OutIt{str[2].begin()});
+    *context.out() = CharT('c');
+
+    assert(str[0].size() == 1);
+    assert(str[0].front() == CharT('a'));
+    assert(str[1].size() == 1);
+    assert(str[1].front() == CharT('b'));
+    assert(str[2].size() == 1);
+    assert(str[2].front() == CharT('c'));
+  }
+}
+
+void test() {
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char>::iterator>, char>>()));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<wchar_t>::iterator>, wchar_t>>()));
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char8_t>::iterator>, char8_t>>()));
+#endif
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char16_t>::iterator>, char16_t>>()));
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char32_t>::iterator>, char32_t>>()));
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/arg.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/arg.pass.cpp
new file mode 100644
index 0000000..84f328a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/arg.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// basic_format_arg<basic_format_context> arg(size_t id) const;
+
+#include <format>
+#include <cassert>
+
+#include "test_basic_format_arg.h"
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+template <class OutIt, class CharT>
+void test() {
+  std::basic_string<CharT> string = MAKE_STRING(CharT, "string");
+  auto store = std::make_format_args<std::basic_format_context<OutIt, CharT>>(
+      true, CharT('a'), 42, string);
+  std::basic_format_args args = store;
+
+  std::basic_string<CharT> output;
+  const std::basic_format_context context = test_format_context_create(OutIt{output}, args);
+  LIBCPP_ASSERT(args.__size() == 4);
+  ASSERT_NOEXCEPT(context.arg(0));
+  for (size_t i = 0, e = args.__size(); i != e; ++i) {
+    assert(context.arg(i));
+  }
+  assert(!context.arg(args.__size()));
+
+  assert(test_basic_format_arg(context.arg(0), true));
+  assert(test_basic_format_arg(context.arg(1), CharT('a')));
+  assert(test_basic_format_arg(context.arg(2), 42));
+  assert(test_basic_format_arg(context.arg(3),
+                               std::basic_string_view<CharT>(string)));
+}
+
+int main(int, char**) {
+  test<std::back_insert_iterator<std::basic_string<char>>, char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<std::back_insert_iterator<std::basic_string<wchar_t>>, wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/ctor.pass.cpp
new file mode 100644
index 0000000..d270a86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/ctor.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <format>
+
+// The Standard does not specifiy a constructor
+// basic_format_context(Out out,
+//                      basic_format_args<basic_format_context> args,
+//                      std::optional<std::::locale>&& loc = std::nullopt);
+// If compiled with -D_LIBCPP_HAS_NO_LOCALIZATION
+// basic_format_context(Out out,
+//                      basic_format_args<basic_format_context> args);
+
+#include <format>
+#include <cassert>
+#include <type_traits>
+
+#include "test_basic_format_arg.h"
+#include "test_format_context.h"
+#include "test_iterators.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+template <class OutIt, class CharT>
+void test() {
+  std::basic_string<CharT> string = MAKE_STRING(CharT, "string");
+  // The type of the object is an exposition only type. The temporary is needed
+  // to extend the lifetype of the object since args stores a pointer to the
+  // data in this object.
+  auto format_arg_store = std::make_format_args<std::basic_format_context<OutIt, CharT>>(true, CharT('a'), 42, string);
+  std::basic_format_args args = format_arg_store;
+
+  {
+    std::basic_string<CharT> output;
+    OutIt out_it{output};
+    std::basic_format_context context = test_format_context_create(out_it, args);
+    LIBCPP_ASSERT(args.__size() == 4);
+
+    assert(test_basic_format_arg(context.arg(0), true));
+    assert(test_basic_format_arg(context.arg(1), CharT('a')));
+    assert(test_basic_format_arg(context.arg(2), 42));
+    assert(test_basic_format_arg(context.arg(3),
+                                 std::basic_string_view<CharT>(string)));
+
+    context.out() = CharT('a');
+    assert(output.size() == 1);
+    assert(output.front() == CharT('a'));
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+    assert(context.locale() == std::locale());
+#endif
+  }
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+  std::locale en_US{LOCALE_en_US_UTF_8};
+  std::locale fr_FR{LOCALE_fr_FR_UTF_8};
+  {
+    std::basic_string<CharT> output;
+    OutIt out_it{output};
+    std::basic_format_context context = test_format_context_create(out_it, args, en_US);
+
+    LIBCPP_ASSERT(args.__size() == 4);
+    assert(test_basic_format_arg(context.arg(0), true));
+    assert(test_basic_format_arg(context.arg(1), CharT('a')));
+    assert(test_basic_format_arg(context.arg(2), 42));
+    assert(test_basic_format_arg(context.arg(3),
+                                 std::basic_string_view<CharT>(string)));
+
+    context.out() = CharT('a');
+    assert(output.size() == 1);
+    assert(output.front() == CharT('a'));
+
+    assert(context.locale() != fr_FR);
+    assert(context.locale() == en_US);
+  }
+
+  {
+    std::basic_string<CharT> output;
+    OutIt out_it{output};
+    std::basic_format_context context = test_format_context_create(out_it, args, fr_FR);
+
+    LIBCPP_ASSERT(args.__size() == 4);
+    assert(test_basic_format_arg(context.arg(0), true));
+    assert(test_basic_format_arg(context.arg(1), CharT('a')));
+    assert(test_basic_format_arg(context.arg(2), 42));
+    assert(test_basic_format_arg(context.arg(3),
+                                 std::basic_string_view<CharT>(string)));
+
+    context.out() = CharT('a');
+    assert(output.size() == 1);
+    assert(output.front() == CharT('a'));
+
+    assert(context.locale() == fr_FR);
+    assert(context.locale() != en_US);
+  }
+#endif
+}
+
+// std::back_insert_iterator<std::string>, copyable
+static_assert(std::is_copy_constructible_v<std::basic_format_context<std::back_insert_iterator<std::string>, char>>);
+static_assert(std::is_copy_assignable_v<std::basic_format_context<std::back_insert_iterator<std::string>, char>>);
+
+static_assert(std::is_move_constructible_v<std::basic_format_context<std::back_insert_iterator<std::string>, char>>);
+static_assert(std::is_move_assignable_v<std::basic_format_context<std::back_insert_iterator<std::string>, char>>);
+
+// cpp20_output_iterator, move only
+static_assert(!std::is_copy_constructible_v<std::basic_format_context<cpp20_output_iterator<int*>, char>>);
+static_assert(!std::is_copy_assignable_v<std::basic_format_context<cpp20_output_iterator<int*>, char>>);
+
+static_assert(std::is_move_constructible_v<std::basic_format_context<cpp20_output_iterator<int*>, char>>);
+static_assert(std::is_move_assignable_v<std::basic_format_context<cpp20_output_iterator<int*>, char>>);
+
+int main(int, char**) {
+  test<std::back_insert_iterator<std::basic_string<char>>, char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<std::back_insert_iterator<std::basic_string<wchar_t>>, wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/locale.pass.cpp
new file mode 100644
index 0000000..06730b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/locale.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// REQUIRES: locale.en_US.UTF-8
+// REQUIRES: locale.fr_FR.UTF-8
+
+// <format>
+
+// std::locale locale();
+
+#include <format>
+#include <cassert>
+
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_basic_format_arg.h"
+#include "test_format_context.h"
+#include "test_macros.h"
+
+template <class OutIt, class CharT>
+void test() {
+  std::locale en_US{LOCALE_en_US_UTF_8};
+  std::locale fr_FR{LOCALE_fr_FR_UTF_8};
+  std::basic_string<CharT> string = MAKE_STRING(CharT, "string");
+  // The type of the object is an exposition only type. The temporary is needed
+  // to extend the lifetype of the object since args stores a pointer to the
+  // data in this object.
+  auto format_arg_store = std::make_format_args<std::basic_format_context<OutIt, CharT>>(true, CharT('a'), 42, string);
+  std::basic_format_args args = format_arg_store;
+
+  {
+    std::basic_string<CharT> output;
+    OutIt out_it{output};
+    std::basic_format_context context = test_format_context_create(out_it, args, en_US);
+    assert(args.__size() == 4);
+    assert(test_basic_format_arg(context.arg(0), true));
+    assert(test_basic_format_arg(context.arg(1), CharT('a')));
+    assert(test_basic_format_arg(context.arg(2), 42));
+    assert(test_basic_format_arg(context.arg(3),
+                                 std::basic_string_view<CharT>(string)));
+
+    context.out() = CharT('a');
+    assert(output.size() == 1);
+    assert(output.front() == CharT('a'));
+
+    assert(context.locale() != fr_FR);
+    assert(context.locale() == en_US);
+  }
+
+  {
+    std::basic_string<CharT> output;
+    OutIt out_it{output};
+    std::basic_format_context context = test_format_context_create(out_it, args, fr_FR);
+    assert(args.__size() == 4);
+    assert(test_basic_format_arg(context.arg(0), true));
+    assert(test_basic_format_arg(context.arg(1), CharT('a')));
+    assert(test_basic_format_arg(context.arg(2), 42));
+    assert(test_basic_format_arg(context.arg(3),
+                                 std::basic_string_view<CharT>(string)));
+
+    context.out() = CharT('a');
+    assert(output.size() == 1);
+    assert(output.front() == CharT('a'));
+
+    assert(context.locale() == fr_FR);
+    assert(context.locale() != en_US);
+  }
+}
+
+int main(int, char**) {
+  test<std::back_insert_iterator<std::basic_string<char>>, char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<std::back_insert_iterator<std::basic_string<wchar_t>>, wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/out.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/out.pass.cpp
new file mode 100644
index 0000000..effcec7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.context/format.context/out.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// iterator out();
+
+#include <format>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+#include "test_format_context.h"
+#include "test_iterators.h"
+
+template <class OutIt, class CharT>
+void test(
+    std::basic_format_args<std::basic_format_context<OutIt, CharT>> args) {
+  {
+    std::basic_string<CharT> str      = std::basic_string<CharT>(3, CharT(' '));
+    std::basic_format_context context = test_format_context_create(OutIt{str.begin()}, args);
+
+    // Note this operation is moving the iterator
+    OutIt out_it = context.out();
+    *out_it++    = CharT('a');
+    *out_it++    = CharT('b');
+    *out_it++    = CharT('c');
+
+    assert(str.size() == 3);
+    assert(str[0] == CharT('a'));
+    assert(str[1] == CharT('b'));
+    assert(str[2] == CharT('c'));
+  }
+}
+
+void test() {
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char>::iterator>, char>>()));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<wchar_t>::iterator>, wchar_t>>()));
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char8_t>::iterator>, char8_t>>()));
+#endif
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char16_t>::iterator>, char16_t>>()));
+  test(std::basic_format_args(
+      std::make_format_args<
+          std::basic_format_context<cpp20_output_iterator<std::basic_string<char32_t>::iterator>, char32_t>>()));
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.bool.pass.cpp
new file mode 100644
index 0000000..da886d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.bool.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, for each cv-unqualified arithmetic type `ArithmeticT`
+// other than char, wchar_t, char8_t, char16_t, or char32_t, a specialization
+//    template<> struct formatter<ArithmeticT, charT>
+//
+// This file tests with `ArithmeticT = bool`, for each valid `charT`.
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+
+template <class StringT, class StringViewT>
+void test(StringT expected, StringViewT fmt, bool arg) {
+  using CharT = typename StringT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<bool, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class StringT>
+void test_termination_condition(StringT expected, StringT f, bool arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test(expected, fmt, arg);
+}
+
+template <class CharT>
+void test_boolean() {
+  test_termination_condition(STR("true"), STR("}"), true);
+  test_termination_condition(STR("false"), STR("}"), false);
+}
+
+int main(int, char**) {
+  test_boolean<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_boolean<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.c_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.c_string.pass.cpp
new file mode 100644
index 0000000..1c94ca7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.c_string.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// C++23 the formatter is a debug-enabled specialization.
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, the string type specializations
+//   template<> struct formatter<charT*, charT>;
+//   template<> struct formatter<const charT*, charT>;
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+template <class T, class StringT, class StringViewT, class CharT>
+void test(StringT expected, StringViewT fmt, const CharT* a) {
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<T, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  auto* arg = const_cast<T>(a);
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class ArgumentT, class StringT, class CharT>
+void test_termination_condition(StringT expected, StringT f, const CharT* arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test<ArgumentT>(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test<ArgumentT>(expected, fmt, arg);
+}
+
+#if TEST_STD_VER > 20
+template <class ArgumentT, class CharT>
+constexpr bool test_set_debug_format() {
+  std::formatter<ArgumentT, CharT> formatter;
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__default);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  std::basic_string_view fmt = SV("s}");
+  std::basic_format_parse_context<CharT> parse_ctx{fmt};
+  formatter.parse(parse_ctx);
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__string);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  return true;
+}
+#endif
+
+template <class ArgumentT>
+void test_char_pointer() {
+  using CharT = std::remove_cv_t<std::remove_pointer_t<ArgumentT>>;
+
+  test_termination_condition<ArgumentT>(STR(" azAZ09,./<>?"), STR("}"),
+                                        CSTR(" azAZ09,./<>?"));
+
+  std::basic_string<CharT> s(CSTR("abc\0abc"), 7);
+  test_termination_condition<ArgumentT>(STR("abc"), STR("}"), s.c_str());
+
+  test_termination_condition<ArgumentT>(STR("world"), STR("}"), CSTR("world"));
+  test_termination_condition<ArgumentT>(STR("world"), STR("_>}"),
+                                        CSTR("world"));
+
+  test_termination_condition<ArgumentT>(STR("   world"), STR(">8}"),
+                                        CSTR("world"));
+  test_termination_condition<ArgumentT>(STR("___world"), STR("_>8}"),
+                                        CSTR("world"));
+  test_termination_condition<ArgumentT>(STR("_world__"), STR("_^8}"),
+                                        CSTR("world"));
+  test_termination_condition<ArgumentT>(STR("world___"), STR("_<8}"),
+                                        CSTR("world"));
+
+  test_termination_condition<ArgumentT>(STR("world"), STR(".5}"),
+                                        CSTR("world"));
+  test_termination_condition<ArgumentT>(STR("unive"), STR(".5}"),
+                                        CSTR("universe"));
+
+  test_termination_condition<ArgumentT>(STR("%world%"), STR("%^7.7}"),
+                                        CSTR("world"));
+  test_termination_condition<ArgumentT>(STR("univers"), STR("%^7.7}"),
+                                        CSTR("universe"));
+
+#if TEST_STD_VER > 20
+  test_set_debug_format<ArgumentT, CharT>();
+  static_assert(test_set_debug_format<ArgumentT, CharT>());
+#endif
+}
+
+int main(int, char**) {
+  test_char_pointer<char*>();
+  test_char_pointer<const char*>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_char_pointer<wchar_t*>();
+  test_char_pointer<const wchar_t*>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char.pass.cpp
new file mode 100644
index 0000000..1a228e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// C++23 the formatter is a debug-enabled specialization.
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// The specializations
+//   template<> struct formatter<char, char>;
+//   template<> struct formatter<char, wchar_t>;
+//   template<> struct formatter<wchar_t, wchar_t>;
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringT, class StringViewT, class ArgumentT>
+void test(StringT expected, StringViewT fmt, ArgumentT arg) {
+  using CharT = typename StringT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<ArgumentT, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class StringT, class ArgumentT>
+void test_termination_condition(StringT expected, StringT f, ArgumentT arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test(expected, fmt, arg);
+}
+
+#if TEST_STD_VER > 20
+template <class ArgumentT, class CharT>
+constexpr bool test_set_debug_format() {
+  std::formatter<ArgumentT, CharT> formatter;
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__default);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  std::basic_string_view fmt = SV("d}");
+  std::basic_format_parse_context<CharT> parse_ctx{fmt};
+  formatter.parse(parse_ctx);
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__decimal);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  return true;
+}
+#endif
+
+template <class ArgumentT, class CharT>
+void test_char_type() {
+  test_termination_condition(STR("a"), STR("}"), ArgumentT('a'));
+  test_termination_condition(STR("z"), STR("}"), ArgumentT('z'));
+  test_termination_condition(STR("A"), STR("}"), ArgumentT('A'));
+  test_termination_condition(STR("Z"), STR("}"), ArgumentT('Z'));
+  test_termination_condition(STR("0"), STR("}"), ArgumentT('0'));
+  test_termination_condition(STR("9"), STR("}"), ArgumentT('9'));
+
+#if TEST_STD_VER > 20
+  test_set_debug_format<ArgumentT, CharT>();
+  static_assert(test_set_debug_format<ArgumentT, CharT>());
+#endif
+}
+
+int main(int, char**) {
+  test_char_type<char, char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_char_type<char, wchar_t>();
+  test_char_type<wchar_t, wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp
new file mode 100644
index 0000000..4788ffe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT __builtin_memcpy isn't constexpr in GCC
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// C++23 the formatter is a debug-enabled specialization.
+// [format.functions]/25
+//   Preconditions: formatter<remove_cvref_t<Ti>, charT> meets the
+//   BasicFormatter requirements ([formatter.requirements]) for each Ti in
+//   Args.
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+// This is based on the method found in
+// clang/test/CXX/temp/temp.arg/temp.arg.nontype/p1-cxx20.cpp
+template <size_t N>
+struct Tester {
+  // This is not part of the real test, but is used the deduce the size of the input.
+  constexpr Tester(const char (&r)[N]) { __builtin_memcpy(text, r, N); }
+  char text[N];
+
+  // The size of the array shouldn't include the NUL character.
+  static const size_t size = N - 1;
+
+  template <class CharT>
+  void test(const std::basic_string<CharT>& expected, const std::basic_string_view<CharT>& fmt) const {
+    using Str = CharT[size];
+    std::basic_format_parse_context<CharT> parse_ctx{fmt};
+    std::formatter<Str, CharT> formatter;
+    static_assert(std::semiregular<decltype(formatter)>);
+
+    auto it = formatter.parse(parse_ctx);
+    assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+    std::basic_string<CharT> result;
+    auto out = std::back_inserter(result);
+    using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+    std::basic_string<CharT> buffer{text, text + N};
+    // Note not too found of this hack
+    Str* data = reinterpret_cast<Str*>(const_cast<CharT*>(buffer.c_str()));
+
+    FormatCtxT format_ctx =
+        test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(*data));
+    formatter.format(*data, format_ctx);
+    assert(result == expected);
+  }
+
+  template <class CharT>
+  void test_termination_condition(const std::basic_string<CharT>& expected, const std::basic_string<CharT>& f) const {
+    // The format-spec is valid if completely consumed or terminates at a '}'.
+    // The valid inputs all end with a '}'. The test is executed twice:
+    // - first with the terminating '}',
+    // - second consuming the entire input.
+    std::basic_string_view<CharT> fmt{f};
+    assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+    test(expected, fmt);
+    fmt.remove_suffix(1);
+    test(expected, fmt);
+  }
+};
+
+template <size_t N>
+Tester(const char (&)[N]) -> Tester<N>;
+
+template <Tester t, class CharT>
+void test_helper_wrapper(std::basic_string<CharT> expected, std::basic_string<CharT> fmt) {
+  t.test_termination_condition(expected, fmt);
+}
+
+#if TEST_STD_VER > 20
+template <class CharT>
+constexpr bool test_set_debug_format() {
+  std::formatter<CharT[1], CharT> formatter;
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__default);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  std::basic_string_view fmt = SV("s}");
+  std::basic_format_parse_context<CharT> parse_ctx{fmt};
+  formatter.parse(parse_ctx);
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__string);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  return true;
+}
+#endif
+
+template <class CharT>
+void test_array() {
+  test_helper_wrapper<" azAZ09,./<>?">(STR(" azAZ09,./<>?"), STR("}"));
+
+  std::basic_string<CharT> s(CSTR("abc\0abc"), 7);
+  test_helper_wrapper<"abc\0abc">(s, STR("}"));
+
+  test_helper_wrapper<"world">(STR("world"), STR("}"));
+  test_helper_wrapper<"world">(STR("world"), STR("_>}"));
+
+  test_helper_wrapper<"world">(STR("   world"), STR(">8}"));
+  test_helper_wrapper<"world">(STR("___world"), STR("_>8}"));
+  test_helper_wrapper<"world">(STR("_world__"), STR("_^8}"));
+  test_helper_wrapper<"world">(STR("world___"), STR("_<8}"));
+
+  test_helper_wrapper<"world">(STR("world"), STR(".5}"));
+  test_helper_wrapper<"universe">(STR("unive"), STR(".5}"));
+
+  test_helper_wrapper<"world">(STR("%world%"), STR("%^7.7}"));
+  test_helper_wrapper<"universe">(STR("univers"), STR("%^7.7}"));
+
+#if TEST_STD_VER > 20
+  test_set_debug_format<CharT>();
+  static_assert(test_set_debug_format<CharT>());
+#endif
+}
+
+int main(int, char**) {
+  test_array<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_array<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.const_char_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.const_char_array.pass.cpp
new file mode 100644
index 0000000..624fb81
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.const_char_array.pass.cpp
@@ -0,0 +1,150 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// C++23 the formatter is a debug-enabled specialization.
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, the string type specializations
+//   template<size_t N> struct formatter<const charT[N], charT>;
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+// This is based on the method found in
+// clang/test/CXX/temp/temp.arg/temp.arg.nontype/p1-cxx20.cpp
+template <size_t N>
+struct Tester {
+  // This is not part of the real test, but is used the deduce the size of the input.
+  constexpr Tester(const char (&r)[N]) { __builtin_memcpy(text, r, N); }
+  char text[N];
+
+  // The size of the array shouldn't include the NUL character.
+  static const size_t size = N - 1;
+
+  template <class CharT>
+  void test(const std::basic_string<CharT>& expected,
+            const std::basic_string_view<CharT>& fmt) const {
+    using Str = const CharT[size];
+    std::basic_format_parse_context<CharT> parse_ctx{fmt};
+    std::formatter<Str, CharT> formatter;
+    static_assert(std::semiregular<decltype(formatter)>);
+
+    auto it = formatter.parse(parse_ctx);
+    assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+    std::basic_string<CharT> result;
+    auto out = std::back_inserter(result);
+    using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+    std::basic_string<CharT> buffer{text, text + N};
+    // Note not too found of this hack
+    Str* data = reinterpret_cast<Str*>(buffer.c_str());
+
+    FormatCtxT format_ctx =
+        test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(*data));
+    formatter.format(*data, format_ctx);
+    assert(result == expected);
+  }
+
+  template <class CharT>
+  void test_termination_condition(const std::basic_string<CharT>& expected,
+                                  const std::basic_string<CharT>& f) const {
+    // The format-spec is valid if completely consumed or terminates at a '}'.
+    // The valid inputs all end with a '}'. The test is executed twice:
+    // - first with the terminating '}',
+    // - second consuming the entire input.
+    std::basic_string_view<CharT> fmt{f};
+    assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+    test(expected, fmt);
+    fmt.remove_suffix(1);
+    test(expected, fmt);
+  }
+};
+
+template <size_t N>
+Tester(const char (&)[N]) -> Tester<N>;
+
+template <Tester t, class CharT>
+void test_helper_wrapper(std::basic_string<CharT> expected,
+                         std::basic_string<CharT> fmt) {
+  t.test_termination_condition(expected, fmt);
+}
+
+#if TEST_STD_VER > 20
+template <class CharT>
+constexpr bool test_set_debug_format() {
+  std::formatter<const CharT[1], CharT> formatter;
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__default);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  std::basic_string_view fmt = SV("s}");
+  std::basic_format_parse_context<CharT> parse_ctx{fmt};
+  formatter.parse(parse_ctx);
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__string);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  return true;
+}
+#endif
+template <class CharT>
+void test_array() {
+  test_helper_wrapper<" azAZ09,./<>?">(STR(" azAZ09,./<>?"), STR("}"));
+
+  std::basic_string<CharT> s(CSTR("abc\0abc"), 7);
+  test_helper_wrapper<"abc\0abc">(s, STR("}"));
+
+  test_helper_wrapper<"world">(STR("world"), STR("}"));
+  test_helper_wrapper<"world">(STR("world"), STR("_>}"));
+
+  test_helper_wrapper<"world">(STR("   world"), STR(">8}"));
+  test_helper_wrapper<"world">(STR("___world"), STR("_>8}"));
+  test_helper_wrapper<"world">(STR("_world__"), STR("_^8}"));
+  test_helper_wrapper<"world">(STR("world___"), STR("_<8}"));
+
+  test_helper_wrapper<"world">(STR("world"), STR(".5}"));
+  test_helper_wrapper<"universe">(STR("unive"), STR(".5}"));
+
+  test_helper_wrapper<"world">(STR("%world%"), STR("%^7.7}"));
+  test_helper_wrapper<"universe">(STR("univers"), STR("%^7.7}"));
+
+#if TEST_STD_VER > 20
+  test_set_debug_format<CharT>();
+  static_assert(test_set_debug_format<CharT>());
+#endif
+}
+
+int main(int, char**) {
+  test_array<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_array<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.floating_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.floating_point.pass.cpp
new file mode 100644
index 0000000..123d0ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.floating_point.pass.cpp
@@ -0,0 +1,486 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, for each cv-unqualified arithmetic type `ArithmeticT`
+// other than char, wchar_t, char8_t, char16_t, or char32_t, a specialization
+//    template<> struct formatter<ArithmeticT, charT>
+//
+// This file tests with `ArithmeticT = floating-point`, for each valid `charT`.
+// Where `floating-point` is one of:
+// - float
+// - double
+// - long double
+
+#include <format>
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <cmath>
+#include <charconv>
+#include <concepts>
+#include <string>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+
+template <class CharT, class ArithmeticT>
+void test(std::basic_string_view<CharT> fmt, ArithmeticT arg, std::basic_string<CharT> expected) {
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<ArithmeticT, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  std::basic_string<CharT> result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+
+  if (expected.empty()) {
+    std::array<char, 128> buffer;
+    expected.append(buffer.begin(), std::to_chars(buffer.begin(), buffer.end(), arg).ptr);
+  }
+
+  assert(result == expected);
+}
+
+template <class StringT, class ArithmeticT>
+void test_termination_condition(StringT f, ArithmeticT arg, StringT expected = {}) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test(fmt, arg, expected);
+  fmt.remove_suffix(1);
+  test(fmt, arg, expected);
+}
+
+template <class CharT, class ArithmeticT>
+void test_hex_lower_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr;
+  test_termination_condition(STR(".20000a}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000a}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr;
+  test_termination_condition(STR(".20000La}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000La}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_hex_upper_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000A}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000A}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::hex, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000LA}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000LA}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_scientific_lower_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr;
+  test_termination_condition(STR(".20000e}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000e}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr;
+  test_termination_condition(STR(".20000Le}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000Le}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_scientific_upper_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000E}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000E}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::scientific, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000LE}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000LE}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_fixed_lower_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr;
+  test_termination_condition(STR(".20000f}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000f}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr;
+  test_termination_condition(STR(".20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000Lf}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_fixed_upper_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000F}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000F}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::fixed, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000LF}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000LF}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_general_lower_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr;
+  test_termination_condition(STR(".20000g}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000g}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr;
+  test_termination_condition(STR(".20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000Lg}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_general_upper_case_precision(ArithmeticT value) {
+  std::array<char, 25'000> buffer;
+  char* end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000G}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size_t size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000G}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#ifndef TEST_HAS_NO_LOCALIZATION
+  end = std::to_chars(buffer.begin(), buffer.end(), value, std::chars_format::general, 20'000).ptr;
+  std::transform(buffer.begin(), end, buffer.begin(), [](char c) { return std::toupper(c); });
+  test_termination_condition(STR(".20000LG}"), value, std::basic_string<CharT>{buffer.begin(), end});
+
+  size = buffer.end() - end;
+  std::fill_n(end, size, '#');
+  test_termination_condition(STR("#<25000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - (size / 2), buffer.end());
+  test_termination_condition(STR("#^25000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::rotate(buffer.begin(), buffer.end() - ((size + 1) / 2), buffer.end());
+  test_termination_condition(STR("#>25000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+  std::fill_n(buffer.begin(), size, '0');
+  if (std::signbit(value)) {
+    buffer[0] = '-';
+    buffer[size] = '0';
+  }
+  test_termination_condition(STR("025000.20000LG}"), value, std::basic_string<CharT>{buffer.begin(), buffer.end()});
+#endif
+}
+
+template <class CharT, class ArithmeticT>
+void test_value(ArithmeticT value) {
+  test_hex_lower_case_precision<CharT>(value);
+  test_hex_upper_case_precision<CharT>(value);
+
+  test_scientific_lower_case_precision<CharT>(value);
+  test_scientific_upper_case_precision<CharT>(value);
+
+  test_fixed_lower_case_precision<CharT>(value);
+  test_fixed_upper_case_precision<CharT>(value);
+
+  test_general_lower_case_precision<CharT>(value);
+  test_general_upper_case_precision<CharT>(value);
+}
+
+template <class ArithmeticT, class CharT>
+void test_special_values() {
+  using A = ArithmeticT;
+
+  test_value<CharT>(-std::numeric_limits<A>::max());
+  test_value<CharT>(A(-1.0));
+  test_value<CharT>(-std::numeric_limits<A>::min());
+  test_value<CharT>(-std::numeric_limits<A>::denorm_min());
+  test_value<CharT>(A(-0.0));
+
+  test_value<CharT>(A(0.0));
+  test_value<CharT>(std::numeric_limits<A>::denorm_min());
+  test_value<CharT>(A(1.0));
+  test_value<CharT>(std::numeric_limits<A>::min());
+  test_value<CharT>(std::numeric_limits<A>::max());
+}
+
+template <class ArithmeticT, class CharT>
+void test_float_type() {
+  using A = ArithmeticT;
+
+  test_termination_condition(STR("}"), A(-std::numeric_limits<float>::max()));
+  test_termination_condition(STR("}"), A(-std::numeric_limits<float>::min()));
+  test_termination_condition(STR("}"), A(-0.0));
+
+  test_termination_condition(STR("}"), A(0.0));
+  test_termination_condition(STR("}"), A(std::numeric_limits<float>::min()));
+  test_termination_condition(STR("}"), A(std::numeric_limits<float>::max()));
+  if (sizeof(A) > sizeof(float)) {
+    test_termination_condition(STR("}"), A(-std::numeric_limits<double>::max()));
+    test_termination_condition(STR("}"), A(-std::numeric_limits<double>::min()));
+    test_termination_condition(STR("}"), A(std::numeric_limits<double>::min()));
+    test_termination_condition(STR("}"), A(std::numeric_limits<double>::max()));
+  }
+  if (sizeof(A) > sizeof(double)) {
+    test_termination_condition(STR("}"), A(-std::numeric_limits<long double>::max()));
+    test_termination_condition(STR("}"), A(-std::numeric_limits<long double>::min()));
+    test_termination_condition(STR("}"), A(std::numeric_limits<long double>::min()));
+    test_termination_condition(STR("}"), A(std::numeric_limits<long double>::max()));
+  }
+
+  // The results of inf and nan may differ from the result of to_chars.
+  test_termination_condition(STR("}"), A(-std::numeric_limits<A>::infinity()), STR("-inf"));
+  test_termination_condition(STR("}"), A(std::numeric_limits<A>::infinity()), STR("inf"));
+
+  A nan = std::numeric_limits<A>::quiet_NaN();
+  test_termination_condition(STR("}"), std::copysign(nan, -1.0), STR("-nan"));
+  test_termination_condition(STR("}"), nan, STR("nan"));
+
+  // TODO FMT Enable long double testing
+  if constexpr (!std::same_as<A, long double>)
+    test_special_values<A, CharT>();
+}
+
+template <class CharT>
+void test_all_float_types() {
+  test_float_type<float, CharT>();
+  test_float_type<double, CharT>();
+  test_float_type<long double, CharT>();
+}
+
+int main(int, char**) {
+  test_all_float_types<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_float_types<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.handle.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.handle.pass.cpp
new file mode 100644
index 0000000..1523fd3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.handle.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// A user defined formatter using
+// template<class Context>
+// class basic_format_arg<Context>::handle
+
+#include <format>
+
+#include <array>
+#include <cassert>
+#include <cmath>
+#include <charconv>
+#include <concepts>
+#include <string>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+
+enum class color { black, red, gold };
+const char* color_names[] = {"black", "red", "gold"};
+
+template <>
+struct std::formatter<color> : std::formatter<const char*> {
+  auto format(color c, auto& ctx) const {
+    return formatter<const char*>::format(color_names[static_cast<int>(c)], ctx);
+  }
+};
+
+void test(std::string expected, std::string_view fmt, color arg) {
+  auto parse_ctx = std::format_parse_context(fmt);
+  std::formatter<color, char> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  std::string result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), char>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), char>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+void test_termination_condition(std::string expected, std::string f, color arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  std::string_view fmt{f};
+  assert(fmt.back() == '}' && "Pre-condition failure");
+
+  test(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test(expected, fmt, arg);
+}
+
+int main(int, char**) {
+  test_termination_condition("black", "}", color::black);
+  test_termination_condition("red", "}", color::red);
+  test_termination_condition("gold", "}", color::gold);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.pointer.pass.cpp
new file mode 100644
index 0000000..316667a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.pointer.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// ...
+// For each charT, the pointer type specializations
+// - template<> struct formatter<nullptr_t, charT>;
+// - template<> struct formatter<void*, charT>;
+// - template<> struct formatter<const void*, charT>;
+
+#include <format>
+
+#include <array>
+#include <cassert>
+#include <cmath>
+#include <charconv>
+#include <concepts>
+#include <string>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+
+template <class StringT, class StringViewT, class PointerT>
+void test(StringT expected, StringViewT fmt, PointerT arg) {
+  using CharT = typename StringT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<PointerT, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+
+  if (expected.empty()) {
+    std::array<char, 128> buffer;
+    buffer[0] = CharT('0');
+    buffer[1] = CharT('x');
+    expected.append(buffer.begin(),
+                    std::to_chars(buffer.begin() + 2, buffer.end(), reinterpret_cast<uintptr_t>(arg), 16).ptr);
+  }
+  assert(result == expected);
+}
+
+template <class StringT, class PointerT>
+void test_termination_condition(StringT expected, StringT f, PointerT arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test(expected, fmt, arg);
+}
+
+template <class CharT>
+void test_nullptr_t() {
+  test_termination_condition(STR("0x0"), STR("}"), nullptr);
+}
+
+template <class PointerT, class CharT>
+void test_pointer_type() {
+  test_termination_condition(STR("0x0"), STR("}"), PointerT(0));
+  test_termination_condition(STR("0x42"), STR("}"), PointerT(0x42));
+  test_termination_condition(STR("0xffff"), STR("}"), PointerT(0xffff));
+  test_termination_condition(STR(""), STR("}"), PointerT(-1));
+}
+
+template <class CharT>
+void test_all_pointer_types() {
+  test_nullptr_t<CharT>();
+  test_pointer_type<void*, CharT>();
+  test_pointer_type<const void*, CharT>();
+}
+
+int main(int, char**) {
+  test_all_pointer_types<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_pointer_types<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.signed_integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.signed_integral.pass.cpp
new file mode 100644
index 0000000..07f5be4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.signed_integral.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, for each cv-unqualified arithmetic type `ArithmeticT`
+// other than char, wchar_t, char8_t, char16_t, or char32_t, a specialization
+//    template<> struct formatter<ArithmeticT, charT>
+//
+// This file tests with `ArithmeticT = signed integer`, for each valid `charT`.
+// Where `signed integer` is one of:
+// - signed char
+// - short
+// - int
+// - long
+// - long long
+// - __int128_t
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+
+template <class StringT, class StringViewT, class ArithmeticT>
+void test(StringT expected, StringViewT fmt, ArithmeticT arg) {
+  using CharT = typename StringT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<ArithmeticT, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class StringT, class ArithmeticT>
+void test_termination_condition(StringT expected, StringT f, ArithmeticT arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test(expected, fmt, arg);
+}
+
+template <class Arithmetic, class CharT>
+void test_signed_integral_type() {
+  using A = Arithmetic;
+  test_termination_condition(STR("-128"), STR("}"), A(-128));
+  test_termination_condition(STR("0"), STR("}"), A(0));
+  test_termination_condition(STR("127"), STR("}"), A(127));
+  if (sizeof(A) > 1) {
+    test_termination_condition(STR("-32768"), STR("}"), A(-32768));
+    test_termination_condition(STR("32767"), STR("}"), A(32767));
+  }
+  if (sizeof(A) > 2) {
+    test_termination_condition(STR("-2147483648"), STR("}"), A(-2147483648));
+    test_termination_condition(STR("2147483647"), STR("}"), A(2147483647));
+  }
+  if (sizeof(A) > 4) {
+    test_termination_condition(STR("-9223372036854775808"), STR("}"), A(std::numeric_limits<int64_t>::min()));
+    test_termination_condition(STR("9223372036854775807"), STR("}"), A(std::numeric_limits<int64_t>::max()));
+  }
+#ifndef TEST_HAS_NO_INT128
+  if (sizeof(A) > 8) {
+    test_termination_condition(
+        STR("-170141183460469231731687303715884105728"), STR("}"), A(std::numeric_limits<__int128_t>::min()));
+    test_termination_condition(
+        STR("170141183460469231731687303715884105727"), STR("}"), A(std::numeric_limits<__int128_t>::max()));
+  }
+#endif
+}
+
+template <class CharT>
+void test_all_signed_integral_types() {
+  test_signed_integral_type<signed char, CharT>();
+  test_signed_integral_type<short, CharT>();
+  test_signed_integral_type<int, CharT>();
+  test_signed_integral_type<long, CharT>();
+  test_signed_integral_type<long long, CharT>();
+#ifndef TEST_HAS_NO_INT128
+  test_signed_integral_type<__int128_t, CharT>();
+#endif
+}
+
+int main(int, char**) {
+  test_all_signed_integral_types<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_signed_integral_types<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.string.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.string.pass.cpp
new file mode 100644
index 0000000..994916d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.string.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// C++23 the formatter is a debug-enabled specialization.
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, the string type specializations
+//   template<class traits, class Allocator>
+//     struct formatter<basic_string<charT, traits, Allocator>, charT>;
+//   template<class traits>
+//     struct formatter<basic_string_view<charT, traits>, charT>;
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "make_string.h"
+#include "test_format_context.h"
+#include "test_macros.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+template <class T, class ArgumentT, class StringT, class StringViewT>
+void test(StringT expected, StringViewT fmt, StringT a) {
+  static_assert(
+      std::same_as<typename T::value_type,
+                   typename std::decay_t<ArgumentT>::value_type> &&
+      std::same_as<typename T::value_type, typename StringT::value_type>);
+  using CharT = typename T::value_type;
+
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<T, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  ArgumentT arg = a;
+  FormatCtxT format_ctx = test_format_context_create<decltype(out), CharT>(
+      out, std::make_format_args<FormatCtxT>(std::forward<ArgumentT>(arg)));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class T, class ArgumentT, class StringT>
+void test_termination_condition(StringT expected, StringT f, StringT arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test<T, ArgumentT>(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test<T, ArgumentT>(expected, fmt, arg);
+}
+
+#if TEST_STD_VER > 20
+template <class ArgumentT, class CharT>
+constexpr bool test_set_debug_format() {
+  std::formatter<ArgumentT, CharT> formatter;
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__default);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  std::basic_string_view fmt = SV("s}");
+  std::basic_format_parse_context<CharT> parse_ctx{fmt};
+  formatter.parse(parse_ctx);
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__string);
+
+  formatter.set_debug_format();
+  LIBCPP_ASSERT(formatter.__parser_.__type_ == std::__format_spec::__type::__debug);
+
+  return true;
+}
+#endif
+
+template <class T, class ArgumentT>
+void test_string_type() {
+  static_assert(std::same_as<typename T::value_type,
+                             typename std::decay_t<ArgumentT>::value_type>);
+  using CharT = typename T::value_type;
+
+  test_termination_condition<T, ArgumentT>(STR(" azAZ09,./<>?"), STR("}"),
+                                           STR(" azAZ09,./<>?"));
+
+  std::basic_string<CharT> s(CSTR("abc\0abc"), 7);
+  test_termination_condition<T, ArgumentT>(s, STR("}"), s);
+
+  test_termination_condition<T, ArgumentT>(STR("world"), STR("}"),
+                                           STR("world"));
+  test_termination_condition<T, ArgumentT>(STR("world"), STR("_>}"),
+                                           STR("world"));
+
+  test_termination_condition<T, ArgumentT>(STR("   world"), STR(">8}"),
+                                           STR("world"));
+  test_termination_condition<T, ArgumentT>(STR("___world"), STR("_>8}"),
+                                           STR("world"));
+  test_termination_condition<T, ArgumentT>(STR("_world__"), STR("_^8}"),
+                                           STR("world"));
+  test_termination_condition<T, ArgumentT>(STR("world___"), STR("_<8}"),
+                                           STR("world"));
+
+  test_termination_condition<T, ArgumentT>(STR("world"), STR(".5}"),
+                                           STR("world"));
+  test_termination_condition<T, ArgumentT>(STR("unive"), STR(".5}"),
+                                           STR("universe"));
+
+  test_termination_condition<T, ArgumentT>(STR("%world%"), STR("%^7.7}"),
+                                           STR("world"));
+  test_termination_condition<T, ArgumentT>(STR("univers"), STR("%^7.7}"),
+                                           STR("universe"));
+
+#if TEST_STD_VER > 20
+  test_set_debug_format<std::remove_cvref_t<ArgumentT>, CharT>();
+  static_assert(test_set_debug_format<std::remove_cvref_t<ArgumentT>, CharT>());
+#endif
+}
+
+template <class CharT>
+void test_all_string_types() {
+  test_string_type<std::basic_string<CharT>, const std::basic_string<CharT>&>();
+  test_string_type<std::basic_string_view<CharT>,
+                   std::basic_string_view<CharT>>();
+}
+
+int main(int, char**) {
+  test_all_string_types<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_string_types<wchar_t>();
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.unsigned_integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.unsigned_integral.pass.cpp
new file mode 100644
index 0000000..11025af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.unsigned_integral.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// [format.formatter.spec]:
+// Each header that declares the template `formatter` provides the following
+// enabled specializations:
+// For each `charT`, for each cv-unqualified arithmetic type `ArithmeticT`
+// other than char, wchar_t, char8_t, char16_t, or char32_t, a specialization
+//    template<> struct formatter<ArithmeticT, charT>
+//
+// This file tests with `ArithmeticT = unsigned integer`, for each valid `charT`.
+// Where `unsigned integer` is one of:
+// - unsigned char
+// - unsigned short
+// - unsigned
+// - unsigned long
+// - unsigned long long
+// - __uint128_t
+
+#include <format>
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+
+template <class StringT, class StringViewT, class ArithmeticT>
+void test(StringT expected, StringViewT fmt, ArithmeticT arg) {
+  using CharT = typename StringT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<ArithmeticT, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+
+  StringT result;
+  auto out = std::back_inserter(result);
+  using FormatCtxT = std::basic_format_context<decltype(out), CharT>;
+
+  FormatCtxT format_ctx =
+      test_format_context_create<decltype(out), CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class StringT, class ArithmeticT>
+void test_termination_condition(StringT expected, StringT f, ArithmeticT arg) {
+  // The format-spec is valid if completely consumed or terminates at a '}'.
+  // The valid inputs all end with a '}'. The test is executed twice:
+  // - first with the terminating '}',
+  // - second consuming the entire input.
+  using CharT = typename StringT::value_type;
+  std::basic_string_view<CharT> fmt{f};
+  assert(fmt.back() == CharT('}') && "Pre-condition failure");
+
+  test(expected, fmt, arg);
+  fmt.remove_suffix(1);
+  test(expected, fmt, arg);
+}
+
+template <class ArithmeticT, class CharT>
+void test_unsigned_integral_type() {
+  using A = ArithmeticT;
+  test_termination_condition(STR("0"), STR("}"), A(0));
+  test_termination_condition(STR("255"), STR("}"), A(255));
+  if (sizeof(A) > 1)
+    test_termination_condition(STR("65535"), STR("}"), A(65535));
+  if (sizeof(A) > 2)
+    test_termination_condition(STR("4294967295"), STR("}"), A(4294967295));
+  if (sizeof(A) > 4)
+    test_termination_condition(STR("8446744073709551615"), STR("}"),
+                               A(8446744073709551615));
+#ifndef TEST_HAS_NO_INT128
+  if (sizeof(A) > 8)
+    test_termination_condition(
+        STR("340282366920938463463374607431768211455"), STR("}"), A(std::numeric_limits<__uint128_t>::max()));
+#endif
+  // Test __formatter::__transform (libc++ specific).
+  test_termination_condition(STR("FF"), STR("X}"), A(255));
+}
+
+template <class CharT>
+void test_all_unsigned_integral_types() {
+  test_unsigned_integral_type<unsigned char, CharT>();
+  test_unsigned_integral_type<unsigned short, CharT>();
+  test_unsigned_integral_type<unsigned, CharT>();
+  test_unsigned_integral_type<unsigned long, CharT>();
+  test_unsigned_integral_type<unsigned long long, CharT>();
+#ifndef TEST_HAS_NO_INT128
+  test_unsigned_integral_type<__uint128_t, CharT>();
+#endif
+}
+
+int main(int, char**) {
+  test_all_unsigned_integral_types<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_all_unsigned_integral_types<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/advance_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/advance_to.pass.cpp
new file mode 100644
index 0000000..1a69942
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/advance_to.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// constexpr void advance_to(const_iterator it);
+
+#include <format>
+
+#include <cassert>
+#include <string_view>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test(const CharT* fmt) {
+  {
+    std::basic_format_parse_context<CharT> context(fmt);
+
+    context.advance_to(context.begin() + 1);
+    assert(std::to_address(context.begin()) == fmt + 1);
+
+    context.advance_to(context.begin() + 1);
+    assert(std::to_address(context.begin()) == fmt + 2);
+
+    context.advance_to(context.begin() + 1);
+    assert(context.begin() == context.end());
+  }
+  {
+    std::basic_string_view view{fmt};
+    std::basic_format_parse_context context(view);
+
+    context.advance_to(context.begin() + 1);
+    assert(std::to_address(context.begin()) == fmt + 1);
+
+    context.advance_to(context.begin() + 1);
+    assert(std::to_address(context.begin()) == fmt + 2);
+
+    context.advance_to(context.begin() + 1);
+    assert(context.begin() == context.end());
+  }
+}
+
+constexpr bool test() {
+  test("abc");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test(L"abc");
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test(u8"abc");
+#endif
+  test(u"abc");
+  test(U"abc");
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/begin.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/begin.pass.cpp
new file mode 100644
index 0000000..df3563e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/begin.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// constexpr begin() const noexcept;
+
+#include <format>
+
+#include <cassert>
+#include <string_view>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test(const CharT* fmt) {
+  {
+    std::basic_format_parse_context<CharT> context(fmt);
+    assert(std::to_address(context.begin()) == &fmt[0]);
+    ASSERT_NOEXCEPT(context.begin());
+  }
+  {
+    std::basic_string_view view{fmt};
+    std::basic_format_parse_context context(view);
+    assert(context.begin() == view.begin());
+    ASSERT_NOEXCEPT(context.begin());
+  }
+}
+
+constexpr bool test() {
+  test("abc");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test(L"abc");
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test(u8"abc");
+#endif
+  test(u"abc");
+  test(U"abc");
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.pass.cpp
new file mode 100644
index 0000000..2f45544
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <format>
+
+// constexpr void check_arg_id(size_t id);
+
+#include <format>
+
+#include <cassert>
+#include <string_view>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  std::format_parse_context context("", 10);
+  for (size_t i = 0; i < 10; ++i)
+    context.check_arg_id(i);
+
+  return true;
+}
+
+void test_exception() {
+  [] {
+    std::format_parse_context context("", 1);
+    TEST_IGNORE_NODISCARD context.next_arg_id();
+    try {
+      context.check_arg_id(0);
+      assert(false);
+    } catch ([[maybe_unused]] const std::format_error& e) {
+      LIBCPP_ASSERT(strcmp(e.what(), "Using manual argument numbering in automatic "
+                                     "argument numbering mode") == 0);
+      return;
+    }
+    assert(false);
+  }();
+
+  auto test_arg = [](size_t num_args) {
+    std::format_parse_context context("", num_args);
+    // Out of bounds access is valid if !std::is_constant_evaluated()
+    for (size_t i = 0; i <= num_args; ++i)
+      context.check_arg_id(i);
+  };
+  for (size_t i = 0; i < 10; ++i)
+    test_arg(i);
+}
+
+int main(int, char**) {
+  test();
+  test_exception();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.verify.cpp
new file mode 100644
index 0000000..74342c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/check_arg_id.verify.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// constexpr void check_arg_id(size_t id);
+
+#include <format>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  // [format.parse.ctx]/11
+  // Remarks: Call expressions where id >= num_args_ are not
+  // core constant expressions ([expr.const]).
+  std::format_parse_context context("", 0);
+  context.check_arg_id(1);
+
+  return true;
+}
+
+int main(int, char**) {
+  // expected-error-re@+1 {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/ctor.pass.cpp
new file mode 100644
index 0000000..8b1601e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/ctor.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// constexpr explicit
+// basic_format_parse_context(basic_string_view<charT> fmt,
+//                            size_t num_args = 0) noexcept
+
+#include <format>
+
+#include <cassert>
+#include <string_view>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test(const CharT* fmt) {
+  // Validate the constructor is explicit.
+  static_assert(
+      !std::is_convertible_v<std::basic_string_view<CharT>,
+                             std::basic_format_parse_context<CharT> >);
+  static_assert(
+      !std::is_copy_constructible_v<std::basic_format_parse_context<CharT> >);
+  static_assert(
+      !std::is_copy_assignable_v<std::basic_format_parse_context<CharT> >);
+  // The move operations are implicitly deleted due to the
+  // deleted copy operations.
+  static_assert(
+      !std::is_move_constructible_v<std::basic_format_parse_context<CharT> >);
+  static_assert(
+      !std::is_move_assignable_v<std::basic_format_parse_context<CharT> >);
+
+  ASSERT_NOEXCEPT(std::basic_format_parse_context{std::basic_string_view<CharT>{}});
+  ASSERT_NOEXCEPT(std::basic_format_parse_context{std::basic_string_view<CharT>{}, 42});
+
+  {
+    std::basic_format_parse_context<CharT> context(fmt);
+    assert(std::to_address(context.begin()) == &fmt[0]);
+    assert(std::to_address(context.end()) == &fmt[3]);
+  }
+  {
+    std::basic_string_view view{fmt};
+    std::basic_format_parse_context context(view);
+    assert(context.begin() == view.begin());
+    assert(context.end() == view.end());
+  }
+}
+
+constexpr bool test() {
+  test("abc");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test(L"abc");
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test(u8"abc");
+#endif
+  test(u"abc");
+  test(U"abc");
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/end.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/end.pass.cpp
new file mode 100644
index 0000000..e1d0f2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/end.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// constexpr end() const noexcept;
+
+#include <format>
+
+#include <cassert>
+#include <string_view>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test(const CharT* fmt) {
+  {
+    std::basic_format_parse_context<CharT> context(fmt);
+    assert(std::to_address(context.end()) == &fmt[3]);
+    ASSERT_NOEXCEPT(context.end());
+  }
+  {
+    std::basic_string_view view{fmt};
+    std::basic_format_parse_context context(view);
+    assert(context.end() == view.end());
+    ASSERT_NOEXCEPT(context.end());
+  }
+}
+
+constexpr bool test() {
+  test("abc");
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test(L"abc");
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test(u8"abc");
+#endif
+  test(u"abc");
+  test(U"abc");
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/next_arg_id.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/next_arg_id.pass.cpp
new file mode 100644
index 0000000..581defb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/next_arg_id.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+
+// <format>
+
+// constexpr size_t next_arg_id();
+
+#include <format>
+
+#include <cassert>
+#include <string_view>
+
+#include "test_macros.h"
+
+constexpr bool test() {
+  std::format_parse_context context("");
+  for (size_t i = 0; i < 10; ++i)
+    assert(i == context.next_arg_id());
+
+  return true;
+}
+
+void test_exception() {
+  std::format_parse_context context("", 1);
+  context.check_arg_id(0);
+
+  try {
+    TEST_IGNORE_NODISCARD context.next_arg_id();
+    assert(false);
+  } catch ([[maybe_unused]] const std::format_error& e) {
+    LIBCPP_ASSERT(strcmp(e.what(), "Using automatic argument numbering in manual "
+                                   "argument numbering mode") == 0);
+    return;
+  }
+  assert(false);
+}
+
+int main(int, char**) {
+  test();
+  test_exception();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/types.compile.pass.cpp
new file mode 100644
index 0000000..eaa18a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.formatter/format.parse.ctx/types.compile.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// Class typedefs:
+// template<class charT>
+// class basic_format_parse_context {
+// public:
+//   using char_type = charT;
+//   using const_iterator = typename basic_string_view<charT>::const_iterator;
+//   using iterator = const_iterator;
+// }
+//
+// Namespace std typedefs:
+// using format_parse_context = basic_format_parse_context<char>;
+// using wformat_parse_context = basic_format_parse_context<wchar_t>;
+
+#include <format>
+
+#include <string_view>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test() {
+  static_assert(
+      std::is_same_v<typename std::basic_format_parse_context<CharT>::char_type,
+                     CharT>);
+  static_assert(std::is_same_v<
+                typename std::basic_format_parse_context<CharT>::const_iterator,
+                typename std::basic_string_view<CharT>::const_iterator>);
+  static_assert(
+      std::is_same_v<
+          typename std::basic_format_parse_context<CharT>::iterator,
+          typename std::basic_format_parse_context<CharT>::const_iterator>);
+}
+
+constexpr void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+  test<char8_t>();
+#endif
+  test<char16_t>();
+  test<char32_t>();
+}
+
+static_assert(std::is_same_v<std::format_parse_context,
+                             std::basic_format_parse_context<char> >);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+static_assert(std::is_same_v<std::wformat_parse_context,
+                             std::basic_format_parse_context<wchar_t> >);
+#endif
+
+// Required for MSVC internal test runner compatibility.
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/P2418.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/P2418.pass.cpp
new file mode 100644
index 0000000..9a5baec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/P2418.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// Tests whether a move only type can be formatted. This is required by
+// P2418R2 "Add support for std::generator-like types to std::format"
+
+// <format>
+
+#include <format>
+#include <cassert>
+
+#include "MoveOnly.h"
+#include "make_string.h"
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <locale>
+#endif
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+struct std::formatter<MoveOnly, CharT> : std::formatter<int, CharT> {
+  auto format(const MoveOnly& m, auto& ctx) const -> decltype(ctx.out()) {
+    return std::formatter<int, CharT>::format(m.get(), ctx);
+  }
+};
+
+template <class CharT>
+static void test() {
+  MoveOnly m{10};
+  CharT buffer[10];
+#ifndef TEST_HAS_NO_LOCALIZATION
+  std::locale loc;
+#endif
+
+  assert(std::format(SV("{}"), MoveOnly{}) == SV("1"));
+
+  assert(std::format(SV("{}"), m) == SV("10"));
+  assert(m.get() == 10);
+
+  assert(std::format(SV("{}"), std::move(m)) == SV("10"));
+  assert(m.get() == 10);
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+  assert(std::format(loc, SV("{}"), MoveOnly{}) == SV("1"));
+
+  assert(std::format(loc, SV("{}"), m) == SV("10"));
+  assert(m.get() == 10);
+
+  assert(std::format(loc, SV("{}"), std::move(m)) == SV("10"));
+  assert(m.get() == 10);
+#endif
+
+  assert(std::format_to(buffer, SV("{}"), MoveOnly{}) == &buffer[1]);
+
+  assert(std::format_to(buffer, SV("{}"), m) == &buffer[2]);
+  assert(m.get() == 10);
+
+  assert(std::format_to(buffer, SV("{}"), std::move(m)) == &buffer[2]);
+  assert(m.get() == 10);
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+  assert(std::format_to(buffer, loc, SV("{}"), MoveOnly{}) == &buffer[1]);
+
+  assert(std::format_to(buffer, loc, SV("{}"), m) == &buffer[2]);
+  assert(m.get() == 10);
+
+  assert(std::format_to(buffer, loc, SV("{}"), std::move(m)) == &buffer[2]);
+  assert(m.get() == 10);
+#endif
+
+  assert(std::format_to_n(buffer, 5, SV("{}"), MoveOnly{}).out == &buffer[1]);
+
+  assert(std::format_to_n(buffer, 5, SV("{}"), m).out == &buffer[2]);
+  assert(m.get() == 10);
+
+  assert(std::format_to_n(buffer, 5, SV("{}"), std::move(m)).out == &buffer[2]);
+  assert(m.get() == 10);
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+  assert(std::format_to_n(buffer, 5, loc, SV("{}"), MoveOnly{}).out == &buffer[1]);
+
+  assert(std::format_to_n(buffer, 5, loc, SV("{}"), m).out == &buffer[2]);
+  assert(m.get() == 10);
+
+  assert(std::format_to_n(buffer, 5, loc, SV("{}"), std::move(m)).out == &buffer[2]);
+  assert(m.get() == 10);
+#endif
+
+  assert(std::formatted_size(SV("{}"), MoveOnly{}) == 1);
+
+  assert(std::formatted_size(SV("{}"), m) == 2);
+  assert(m.get() == 10);
+
+  assert(std::formatted_size(SV("{}"), std::move(m)) == 2);
+  assert(m.get() == 10);
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+  assert(std::formatted_size(loc, SV("{}"), MoveOnly{}) == 1);
+
+  assert(std::formatted_size(loc, SV("{}"), m) == 2);
+  assert(m.get() == 10);
+
+  assert(std::formatted_size(loc, SV("{}"), std::move(m)) == 2);
+  assert(m.get() == 10);
+#endif
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/ascii.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/ascii.pass.cpp
new file mode 100644
index 0000000..4b94ebb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/ascii.pass.cpp
@@ -0,0 +1,158 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Force unicode to be disabled.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_HAS_NO_UNICODE
+
+// <format>
+
+// Tests Unicode is ignored and handled as ASCII.
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+// Note the comment annotations are from the Unicode test
+static void test_char() {
+  //*** 1-byte code points ***
+  assert(std::format("{:*^3}", " ") == "* *");
+  assert(std::format("{:*^3}", "~") == "*~*");
+
+  //*** 2-byte code points ***
+  assert(std::format("{:*^4}", "\u00a1") == "*\u00a1*"); // INVERTED EXCLAMATION MARK
+  assert(std::format("{:*^4}", "\u07ff") == "*\u07ff*"); // NKO TAMAN SIGN
+
+  //*** 3-byte code points ***
+  assert(std::format("{:*^5}", "\u0800") == "*\u0800*"); // SAMARITAN LETTER ALAF
+  assert(std::format("{:*^5}", "\ufffd") == "*\ufffd*"); // REPLACEMENT CHARACTER
+
+  // 2 column ranges
+  assert(std::format("{:*^5}", "\u1100") == "*\u1100*"); // HANGUL CHOSEONG KIYEOK
+  assert(std::format("{:*^5}", "\u115f") == "*\u115f*"); // HANGUL CHOSEONG FILLER
+
+  assert(std::format("{:*^5}", "\u2329") == "*\u2329*"); // LEFT-POINTING ANGLE BRACKET
+  assert(std::format("{:*^5}", "\u232a") == "*\u232a*"); // RIGHT-POINTING ANGLE BRACKET
+
+  assert(std::format("{:*^5}", "\u2e80") == "*\u2e80*"); // CJK RADICAL REPEAT
+  assert(std::format("{:*^5}", "\u303e") == "*\u303e*"); // IDEOGRAPHIC VARIATION INDICATOR
+
+  assert(std::format("{:*^5}", "\u3040") == "*\u3040*"); // U+3041 HIRAGANA LETTER SMALL A
+  assert(std::format("{:*^5}", "\ua4cf") == "*\ua4cf*"); // U+A4D0 LISU LETTER BA
+
+  assert(std::format("{:*^5}", "\uac00") == "*\uac00*"); // <Hangul Syllable, First>
+  assert(std::format("{:*^5}", "\ud7a3") == "*\ud7a3*"); // Hangul Syllable Hih
+
+  assert(std::format("{:*^5}", "\uf900") == "*\uf900*"); // CJK COMPATIBILITY IDEOGRAPH-F900
+  assert(std::format("{:*^5}", "\ufaff") == "*\ufaff*"); // U+FB00 LATIN SMALL LIGATURE FF
+
+  assert(std::format("{:*^5}", "\ufe10") == "*\ufe10*"); // PRESENTATION FORM FOR VERTICAL COMMA
+  assert(std::format("{:*^5}", "\ufe19") == "*\ufe19*"); // PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
+
+  assert(std::format("{:*^5}", "\ufe30") == "*\ufe30*"); // PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
+  assert(std::format("{:*^5}", "\ufe6f") == "*\ufe6f*"); // U+FE70 ARABIC FATHATAN ISOLATED FORM
+
+  assert(std::format("{:*^5}", "\uff00") == "*\uff00*"); // U+FF01 FULLWIDTH EXCLAMATION MARK
+  assert(std::format("{:*^5}", "\uff60") == "*\uff60*"); // FULLWIDTH RIGHT WHITE PARENTHESIS
+
+  assert(std::format("{:*^5}", "\uffe0") == "*\uffe0*"); // FULLWIDTH CENT SIGN
+  assert(std::format("{:*^5}", "\uffe6") == "*\uffe6*"); // FULLWIDTH WON SIGN
+
+  //*** 4-byte code points ***
+  assert(std::format("{:*^6}", "\U00010000") == "*\U00010000*"); // LINEAR B SYLLABLE B008 A
+  assert(std::format("{:*^6}", "\U0010FFFF") == "*\U0010FFFF*"); // Undefined Character
+
+  // 2 column ranges
+  assert(std::format("{:*^6}", "\U0001f300") == "*\U0001f300*"); // CYCLONE
+  assert(std::format("{:*^6}", "\U0001f64f") == "*\U0001f64f*"); // PERSON WITH FOLDED HANDS
+  assert(std::format("{:*^6}", "\U0001f900") == "*\U0001f900*"); // CIRCLED CROSS FORMEE WITH FOUR DOTS
+  assert(std::format("{:*^6}", "\U0001f9ff") == "*\U0001f9ff*"); // NAZAR AMULET
+  assert(std::format("{:*^6}", "\U00020000") == "*\U00020000*"); // <CJK Ideograph Extension B, First>
+  assert(std::format("{:*^6}", "\U0002fffd") == "*\U0002fffd*"); // Undefined Character
+  assert(std::format("{:*^6}", "\U00030000") == "*\U00030000*"); // <CJK Ideograph Extension G, First>
+  assert(std::format("{:*^6}", "\U0003fffd") == "*\U0003fffd*"); // Undefined Character
+}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+// Note the comment annotations are from the Unicode test
+static void test_wchar_t() {
+  if constexpr (sizeof(wchar_t) == 2) {
+    // TODO FMT Add these tests.
+  } else {
+    //*** 1-byte code points ***
+    assert(std::format(L"{:*^3}", L" ") == L"* *");
+    assert(std::format(L"{:*^3}", L"~") == L"*~*");
+
+    //*** 2-byte code points ***
+    assert(std::format(L"{:*^3}", L"\u00a1") == L"*\u00a1*"); // INVERTED EXCLAMATION MARK
+    assert(std::format(L"{:*^3}", L"\u07ff") == L"*\u07ff*"); // NKO TAMAN SIGN
+
+    //*** 3-byte code points ***
+    assert(std::format(L"{:*^3}", L"\u0800") == L"*\u0800*"); // SAMARITAN LETTER ALAF
+    assert(std::format(L"{:*^3}", L"\ufffd") == L"*\ufffd*"); // REPLACEMENT CHARACTER
+
+    // 2 column ranges
+    assert(std::format(L"{:*^3}", L"\u1100") == L"*\u1100*"); // HANGUL CHOSEONG KIYEOK
+    assert(std::format(L"{:*^3}", L"\u115f") == L"*\u115f*"); // HANGUL CHOSEONG FILLER
+
+    assert(std::format(L"{:*^3}", L"\u2329") == L"*\u2329*"); // LEFT-POINTING ANGLE BRACKET
+    assert(std::format(L"{:*^3}", L"\u232a") == L"*\u232a*"); // RIGHT-POINTING ANGLE BRACKET
+
+    assert(std::format(L"{:*^3}", L"\u2e80") == L"*\u2e80*"); // CJK RADICAL REPEAT
+    assert(std::format(L"{:*^3}", L"\u303e") == L"*\u303e*"); // IDEOGRAPHIC VARIATION INDICATOR
+
+    assert(std::format(L"{:*^3}", L"\u3040") == L"*\u3040*"); // U+3041 HIRAGANA LETTER SMALL A
+    assert(std::format(L"{:*^3}", L"\ua4cf") == L"*\ua4cf*"); // U+A4D0 LISU LETTER BA
+
+    assert(std::format(L"{:*^3}", L"\uac00") == L"*\uac00*"); // <Hangul Syllable, First>
+    assert(std::format(L"{:*^3}", L"\ud7a3") == L"*\ud7a3*"); // Hangul Syllable Hih
+
+    assert(std::format(L"{:*^3}", L"\uf900") == L"*\uf900*"); // CJK COMPATIBILITY IDEOGRAPH-F900
+    assert(std::format(L"{:*^3}", L"\ufaff") == L"*\ufaff*"); // U+FB00 LATIN SMALL LIGATURE FF
+
+    assert(std::format(L"{:*^3}", L"\ufe10") == L"*\ufe10*"); // PRESENTATION FORM FOR VERTICAL COMMA
+    assert(std::format(L"{:*^3}", L"\ufe19") == L"*\ufe19*"); // PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
+
+    assert(std::format(L"{:*^3}", L"\ufe30") == L"*\ufe30*"); // PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
+    assert(std::format(L"{:*^3}", L"\ufe6f") == L"*\ufe6f*"); // U+FE70 ARABIC FATHATAN ISOLATED FORM
+
+    assert(std::format(L"{:*^3}", L"\uff00") == L"*\uff00*"); // U+FF01 FULLWIDTH EXCLAMATION MARK
+    assert(std::format(L"{:*^3}", L"\uff60") == L"*\uff60*"); // FULLWIDTH RIGHT WHITE PARENTHESIS
+
+    assert(std::format(L"{:*^3}", L"\uffe0") == L"*\uffe0*"); // FULLWIDTH CENT SIGN
+    assert(std::format(L"{:*^3}", L"\uffe6") == L"*\uffe6*"); // FULLWIDTH WON SIGN
+
+    //*** 4-byte code points ***
+    assert(std::format(L"{:*^3}", L"\U00010000") == L"*\U00010000*"); // LINEAR B SYLLABLE B008 A
+    assert(std::format(L"{:*^3}", L"\U0010FFFF") == L"*\U0010FFFF*"); // Undefined Character
+
+    // 2 column ranges
+    assert(std::format(L"{:*^3}", L"\U0001f300") == L"*\U0001f300*"); // CYCLONE
+    assert(std::format(L"{:*^3}", L"\U0001f64f") == L"*\U0001f64f*"); // PERSON WITH FOLDED HANDS
+    assert(std::format(L"{:*^3}", L"\U0001f900") == L"*\U0001f900*"); // CIRCLED CROSS FORMEE WITH FOUR DOTS
+    assert(std::format(L"{:*^3}", L"\U0001f9ff") == L"*\U0001f9ff*"); // NAZAR AMULET
+    assert(std::format(L"{:*^3}", L"\U00020000") == L"*\U00020000*"); // <CJK Ideograph Extension B, First>
+    assert(std::format(L"{:*^3}", L"\U0002fffd") == L"*\U0002fffd*"); // Undefined Character
+    assert(std::format(L"{:*^3}", L"\U00030000") == L"*\U00030000*"); // <CJK Ideograph Extension G, First>
+    assert(std::format(L"{:*^3}", L"\U0003fffd") == L"*\U0003fffd*"); // Undefined Character
+  }
+}
+#endif
+
+int main(int, char**) {
+  test_char();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_wchar_t();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/escaped_output.ascii.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/escaped_output.ascii.pass.cpp
new file mode 100644
index 0000000..329124f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/escaped_output.ascii.pass.cpp
@@ -0,0 +1,347 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Force unicode to be disabled.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_HAS_NO_UNICODE
+
+// <format>
+
+// This test the debug string type for the formatter specializations for char
+// and string types. This tests ASCII strings, the tests assume every char32_t value is valid ASCII.
+
+#include <cassert>
+#include <concepts>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "make_string.h"
+#include "test_format_string.h"
+#include "assert_macros.h"
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <iostream>
+#endif
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+auto test_format = []<class CharT, class... Args>(
+                       std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  {
+    std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+    TEST_REQUIRE(out == expected,
+                 test_concat_message(
+                     "\nFormat string   ", fmt.get(), "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+  }
+#ifndef TEST_HAS_NO_LOCALIZATION
+  {
+    std::basic_string<CharT> out = std::format(std::locale(), fmt, std::forward<Args>(args)...);
+    assert(out == expected);
+  }
+#endif // TEST_HAS_NO_LOCALIZATION
+};
+
+auto test_format_to =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+      {
+        std::basic_string<CharT> out(expected.size(), CharT(' '));
+        auto it = std::format_to(out.begin(), fmt, std::forward<Args>(args)...);
+        assert(it == out.end());
+        assert(out == expected);
+      }
+#ifndef TEST_HAS_NO_LOCALIZATION
+      {
+        std::basic_string<CharT> out(expected.size(), CharT(' '));
+        auto it = std::format_to(out.begin(), std::locale(), fmt, std::forward<Args>(args)...);
+        assert(it == out.end());
+        assert(out == expected);
+      }
+#endif // TEST_HAS_NO_LOCALIZATION
+      {
+        std::list<CharT> out;
+        std::format_to(std::back_inserter(out), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        std::vector<CharT> out;
+        std::format_to(std::back_inserter(out), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        assert(expected.size() < 4096 && "Update the size of the buffer.");
+        CharT out[4096];
+        CharT* it = std::format_to(out, fmt, std::forward<Args>(args)...);
+        assert(std::distance(out, it) == int(expected.size()));
+        // Convert to std::string since output contains '\0' for boolean tests.
+        assert(std::basic_string<CharT>(out, it) == expected);
+      }
+    };
+
+auto test_formatted_size =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+      {
+        size_t size = std::formatted_size(fmt, std::forward<Args>(args)...);
+        assert(size == expected.size());
+      }
+#ifndef TEST_HAS_NO_LOCALIZATION
+      {
+        size_t size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+        assert(size == expected.size());
+      }
+#endif // TEST_HAS_NO_LOCALIZATION
+    };
+
+auto test_format_to_n =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+      {
+        size_t n = expected.size();
+        std::basic_string<CharT> out(n, CharT(' '));
+        std::format_to_n_result result = std::format_to_n(out.begin(), n, fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out == expected);
+      }
+#ifndef TEST_HAS_NO_LOCALIZATION
+      {
+        size_t n = expected.size();
+        std::basic_string<CharT> out(n, CharT(' '));
+        std::format_to_n_result result =
+            std::format_to_n(out.begin(), n, std::locale(), fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out == expected);
+      }
+#endif // TEST_HAS_NO_LOCALIZATION
+      {
+        ptrdiff_t n = 0;
+        std::basic_string<CharT> out;
+        std::format_to_n_result result = std::format_to_n(out.begin(), n, fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out.empty());
+      }
+      {
+        ptrdiff_t n = expected.size() / 2;
+        std::basic_string<CharT> out(n, CharT(' '));
+        std::format_to_n_result result = std::format_to_n(out.begin(), n, fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out == expected.substr(0, n));
+      }
+    };
+
+template <class CharT>
+void test_char() {
+  // *** P2286 examples ***
+  test_format(SV("['\\'', '\"']"), SV("[{:?}, {:?}]"), CharT('\''), CharT('"'));
+
+  // *** Specical cases ***
+  test_format(SV("'\\t'"), SV("{:?}"), CharT('\t'));
+  test_format(SV("'\\n'"), SV("{:?}"), CharT('\n'));
+  test_format(SV("'\\r'"), SV("{:?}"), CharT('\r'));
+  test_format(SV("'\\\\'"), SV("{:?}"), CharT('\\'));
+
+  test_format(SV("'\\\''"), SV("{:?}"), CharT('\''));
+  test_format(SV("'\"'"), SV("{:?}"), CharT('"')); // only special for string
+
+  test_format(SV("' '"), SV("{:?}"), CharT(' '));
+
+  // *** Printable ***
+  test_format(SV("'a'"), SV("{:?}"), CharT('a'));
+  test_format(SV("'b'"), SV("{:?}"), CharT('b'));
+  test_format(SV("'c'"), SV("{:?}"), CharT('c'));
+
+  // *** Non-printable ***
+
+  // Control
+  test_format(SV("'\\u{0}'"), SV("{:?}"), CharT('\0'));
+  test_format(SV("'\\u{1f}'"), SV("{:?}"), CharT('\x1f'));
+
+  // Ill-formed
+  if constexpr (sizeof(CharT) == 1)
+    test_format(SV("'\x80'"), SV("{:?}"), CharT('\x80'));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  if constexpr (sizeof(CharT) > 1) {
+    using V = std::basic_string_view<CharT>;
+
+    // Unicode fitting in a 16-bit wchar_t
+
+    // *** Non-printable ***
+
+    // Space_Separator
+    test_format(V{L"'\xa0'"}, L"{:?}", L'\xa0');     // NO-BREAK SPACE
+    test_format(V{L"'\x3000'"}, L"{:?}", L'\x3000'); // IDEOGRAPHIC SPACE
+
+    // Line_Separator
+    test_format(V{L"'\x2028'"}, L"{:?}", L'\x2028'); // LINE SEPARATOR
+
+    // Paragraph_Separator
+    test_format(V{L"'\x2029'"}, L"{:?}", L'\x2029'); // PARAGRAPH SEPARATOR
+
+    // Format
+    test_format(V{L"'\xad'"}, L"{:?}", L'\xad');     // SOFT HYPHEN
+    test_format(V{L"'\x600'"}, L"{:?}", L'\x600');   // ARABIC NUMBER SIGN
+    test_format(V{L"'\xfeff'"}, L"{:?}", L'\xfeff'); // ZERO WIDTH NO-BREAK SPACE
+
+    if constexpr (sizeof(CharT) == 2) {
+      // Incomplete surrogate pair in UTF-16
+      test_format(V{L"'\xd800'"}, L"{:?}", L'\xd800'); // <surrogate-D800>
+      test_format(V{L"'\xdfff'"}, L"{:?}", L'\xdfff'); // <surrogate-DFFF>
+    } else {
+      test_format(V{L"'\xd800'"}, L"{:?}", L'\xd800'); // <surrogate-D800>
+      test_format(V{L"'\xdfff'"}, L"{:?}", L'\xdfff'); // <surrogate-DFFF>
+    }
+
+    // Private_Use
+    test_format(V{L"'\xe000'"}, L"{:?}", L'\xe000'); // <private-use-E000>
+    test_format(V{L"'\xf8ff'"}, L"{:?}", L'\xf8ff'); // <private-use-F8FF>
+
+    // Unassigned
+    test_format(V{L"'\x378'"}, L"{:?}", L'\x378');   // <reserved-0378>
+    test_format(V{L"'\x1774'"}, L"{:?}", L'\x1774'); // <reserved-1774>
+    test_format(V{L"'\xffff'"}, L"{:?}", L'\xffff'); // <noncharacter-FFFF>
+
+    // Grapheme Extended
+    test_format(V{L"'\x300'"}, L"{:?}", L'\x300');   // COMBINING GRAVE ACCENT
+    test_format(V{L"'\xfe20'"}, L"{:?}", L'\xfe20'); // VARIATION SELECTOR-1
+  }
+#  ifndef TEST_SHORT_WCHAR
+  if constexpr (sizeof(CharT) > 2) {
+    static_assert(sizeof(CharT) == 4, "add support for unexpected size");
+    // Unicode fitting in a 32-bit wchar_t
+
+    constexpr wchar_t x  = 0x1ffff;
+    constexpr uint32_t y = 0x1ffff;
+    static_assert(x == y);
+
+    using V = std::basic_string_view<CharT>;
+
+    // *** Non-printable ***
+    // Format
+    test_format(V{L"'\x110bd'"}, L"{:?}", L'\x110bd'); // KAITHI NUMBER SIGN
+    test_format(V{L"'\xe007f'"}, L"{:?}", L'\xe007f'); // CANCEL TAG
+
+    // Private_Use
+    test_format(V{L"'\xf0000'"}, L"{:?}", L'\xf0000'); // <private-use-F0000>
+    test_format(V{L"'\xffffd'"}, L"{:?}", L'\xffffd'); // <private-use-FFFFD>
+
+    test_format(V{L"'\x100000'"}, L"{:?}", L'\x100000'); // <private-use-100000>
+    test_format(V{L"'\x10fffd'"}, L"{:?}", L'\x10fffd'); // <private-use-10FFFD>
+
+    // Unassigned
+    test_format(V{L"'\x1000c'"}, L"{:?}", L'\x1000c');   // <reserved-1000c>
+    test_format(V{L"'\xfffff'"}, L"{:?}", L'\xfffff');   // <noncharacter-FFFFF>
+    test_format(V{L"'\x10fffe'"}, L"{:?}", L'\x10fffe'); // <noncharacter-10FFFE>
+
+    // Grapheme Extended
+    test_format(V{L"'\x101fd'"}, L"{:?}", L'\x101fd'); // COMBINING OLD PERMIC LETTER AN
+    test_format(V{L"'\xe0100'"}, L"{:?}", L'\xe0100'); // VARIATION SELECTOR-17
+
+    // Ill-formed
+    test_format(V{L"'\x110000'"}, L"{:?}", L'\x110000');
+    test_format(V{L"'\xffffffff'"}, L"{:?}", L'\xffffffff');
+  }
+#  endif // TEST_SHORT_WCHAR
+#endif   // TEST_HAS_NO_WIDE_CHARACTERS
+}
+
+template <class CharT>
+void test_string() {
+  // *** P2286 examples ***
+  test_format(SV("[h\tllo]"), SV("[{}]"), SV("h\tllo"));
+  test_format(SV(R"(["h\tllo"])"), SV("[{:?}]"), SV("h\tllo"));
+  test_format(SV(R"(["Спасибо, Виктор ♥!"])"), SV("[{:?}]"), SV("Спасибо, Виктор ♥!"));
+
+  test_format(SV(R"(["\u{0} \n \t \u{2} \u{1b}"])"), SV("[{:?}]"), SV("\0 \n \t \x02 \x1b"));
+
+  if constexpr (sizeof(CharT) == 1) {
+    // Ill-formend UTF-8, but valid as ASCII
+    test_format(SV("[\"\xc3\"]"), SV("[{:?}]"), SV("\xc3"));
+    test_format(SV("[\"\xc3\x28\"]"), SV("[{:?}]"), SV("\xc3\x28"));
+  } else {
+    // Valid UTF-16 and UTF-32
+    test_format(SV("[\"\u00c3\"]"), SV("[{:?}]"), L"\xc3"); // LATIN CAPITAL LETTER A WITH TILDE
+    test_format(SV("[\"\u00c3(\"]"), SV("[{:?}]"), L"\xc3\x28");
+  }
+
+  test_format(SV("[\"🤷🏻\u200d♂\ufe0f\"]"), SV("[{:?}]"), SV("🤷🏻‍♂️"));
+
+  // *** Specical cases ***
+  test_format(SV(R"("\t\n\r\\'\" ")"), SV("{:?}"), SV("\t\n\r\\'\" "));
+
+  // *** Printable ***
+  test_format(SV(R"("abcdefg")"), SV("{:?}"), SV("abcdefg"));
+
+  // *** Non-printable ***
+
+  // Control
+  test_format(SV(R"("\u{0}\u{1f}")"), SV("{:?}"), SV("\0\x1f"));
+
+  // Ill-formed UTF-8, valid ASCII
+  test_format(SV("\"\x80\""), SV("{:?}"), SV("\x80"));
+}
+
+template <class CharT, class TestFunction>
+void test_format_functions(TestFunction check) {
+  // LATIN SMALL LETTER O WITH DIAERESIS is encoded in two chars or 1 wchar_t
+  // due to the range of the value.
+  // 8 + sizeof(CharT) == 1 is not considered an constant expression
+
+  // *** align-fill & width ***
+  check(SV(R"(***"hellö")"),
+        SV("{:*>{}?}"),
+        SV("hellö"),
+        sizeof(CharT) == 1 ? 11 : 10); // ö is LATIN SMALL LETTER O WITH DIAERESIS
+  check(SV(R"(*"hellö"**)"), SV("{:*^{}?}"), SV("hellö"), sizeof(CharT) == 1 ? 11 : 10);
+  check(SV(R"("hellö"***)"), SV("{:*<{}?}"), SV("hellö"), sizeof(CharT) == 1 ? 11 : 10);
+
+  check(SV("\"hello\u0308\""), SV("{:*>{}?}"), SV("hello\u0308"), sizeof(CharT) == 1 ? 9 : 8);
+  check(SV("***\"hello\u0308\""), SV("{:*>{}?}"), SV("hello\u0308"), sizeof(CharT) == 1 ? 12 : 11);
+  check(SV("*\"hello\u0308\"**"), SV("{:*^{}?}"), SV("hello\u0308"), sizeof(CharT) == 1 ? 12 : 11);
+  check(SV("\"hello\u0308\"***"), SV("{:*<{}?}"), SV("hello\u0308"), sizeof(CharT) == 1 ? 12 : 11);
+
+  // *** width ***
+  check(SV(R"("hello"   )"), SV("{:10?}"), SV("hello"));
+
+  // *** precision ***
+  check(SV(R"("hell)"), SV("{:.5?}"), SV("hello"));
+  check(SV(R"("hello)"), SV("{:.6?}"), SV("hello"));
+  check(SV(R"("hello")"), SV("{:.7?}"), SV("hello"));
+
+  // *** width & precision ***
+  check(SV(R"("hell#########################)"), SV("{:#<30.5?}"), SV("hello"));
+  check(SV(R"("hello########################)"), SV("{:#<30.6?}"), SV("hello"));
+  check(SV(R"("hello"#######################)"), SV("{:#<30.7?}"), SV("hello"));
+}
+
+template <class CharT>
+void test() {
+  test_char<CharT>();
+
+  test_string<CharT>();
+
+  test_format_functions<CharT>(test_format);
+  test_format_functions<CharT>(test_format_to);
+  test_format_functions<CharT>(test_formatted_size);
+  test_format_functions<CharT>(test_format_to_n);
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp
new file mode 100644
index 0000000..c940bcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/escaped_output.unicode.pass.cpp
@@ -0,0 +1,531 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This version runs the test when the platform has Unicode support.
+// UNSUPPORTED: libcpp-has-no-unicode
+
+// TODO FMT Investigate Windows and AIX issues.
+// UNSUPPORTED: msvc, target={{.+}}-windows-gnu
+// UNSUPPORTED: LIBCXX-AIX-FIXME
+
+// <format>
+
+// This test the debug string type for the formatter specializations for char
+// and string types. This tests Unicode strings.
+
+#include <format>
+
+#include <cassert>
+#include <concepts>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "make_string.h"
+#include "test_format_string.h"
+#include "assert_macros.h"
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <iostream>
+#endif
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+auto test_format = []<class CharT, class... Args>(
+                       std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  {
+    std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+    TEST_REQUIRE(out == expected,
+                 test_concat_message(
+                     "\nFormat string   ", fmt.get(), "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+  }
+#ifndef TEST_HAS_NO_LOCALIZATION
+  {
+    std::basic_string<CharT> out = std::format(std::locale(), fmt, std::forward<Args>(args)...);
+    assert(out == expected);
+  }
+#endif // TEST_HAS_NO_LOCALIZATION
+};
+
+auto test_format_to =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+      {
+        std::basic_string<CharT> out(expected.size(), CharT(' '));
+        auto it = std::format_to(out.begin(), fmt, std::forward<Args>(args)...);
+        assert(it == out.end());
+        assert(out == expected);
+      }
+#ifndef TEST_HAS_NO_LOCALIZATION
+      {
+        std::basic_string<CharT> out(expected.size(), CharT(' '));
+        auto it = std::format_to(out.begin(), std::locale(), fmt, std::forward<Args>(args)...);
+        assert(it == out.end());
+        assert(out == expected);
+      }
+#endif // TEST_HAS_NO_LOCALIZATION
+      {
+        std::list<CharT> out;
+        std::format_to(std::back_inserter(out), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        std::vector<CharT> out;
+        std::format_to(std::back_inserter(out), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        assert(expected.size() < 4096 && "Update the size of the buffer.");
+        CharT out[4096];
+        CharT* it = std::format_to(out, fmt, std::forward<Args>(args)...);
+        assert(std::distance(out, it) == int(expected.size()));
+        // Convert to std::string since output contains '\0' for boolean tests.
+        assert(std::basic_string<CharT>(out, it) == expected);
+      }
+    };
+
+auto test_formatted_size =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+      {
+        size_t size = std::formatted_size(fmt, std::forward<Args>(args)...);
+        assert(size == expected.size());
+      }
+#ifndef TEST_HAS_NO_LOCALIZATION
+      {
+        size_t size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+        assert(size == expected.size());
+      }
+#endif // TEST_HAS_NO_LOCALIZATION
+    };
+
+auto test_format_to_n =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+      {
+        size_t n = expected.size();
+        std::basic_string<CharT> out(n, CharT(' '));
+        std::format_to_n_result result = std::format_to_n(out.begin(), n, fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out == expected);
+      }
+#ifndef TEST_HAS_NO_LOCALIZATION
+      {
+        size_t n = expected.size();
+        std::basic_string<CharT> out(n, CharT(' '));
+        std::format_to_n_result result =
+            std::format_to_n(out.begin(), n, std::locale(), fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out == expected);
+      }
+#endif // TEST_HAS_NO_LOCALIZATION
+      {
+        ptrdiff_t n = 0;
+        std::basic_string<CharT> out;
+        std::format_to_n_result result = std::format_to_n(out.begin(), n, fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out.empty());
+      }
+      {
+        ptrdiff_t n = expected.size() / 2;
+        std::basic_string<CharT> out(n, CharT(' '));
+        std::format_to_n_result result = std::format_to_n(out.begin(), n, fmt, std::forward<Args>(args)...);
+        assert(result.size == static_cast<ptrdiff_t>(expected.size()));
+        assert(result.out == out.end());
+        assert(out == expected.substr(0, n));
+      }
+    };
+
+template <class CharT>
+void test_char() {
+  // *** P2286 examples ***
+  test_format(SV("['\\'', '\"']"), SV("[{:?}, {:?}]"), CharT('\''), CharT('"'));
+
+  // *** Specical cases ***
+  test_format(SV("'\\t'"), SV("{:?}"), CharT('\t'));
+  test_format(SV("'\\n'"), SV("{:?}"), CharT('\n'));
+  test_format(SV("'\\r'"), SV("{:?}"), CharT('\r'));
+  test_format(SV("'\\\\'"), SV("{:?}"), CharT('\\'));
+
+  test_format(SV("'\\\''"), SV("{:?}"), CharT('\''));
+  test_format(SV("'\"'"), SV("{:?}"), CharT('"')); // only special for string
+
+  test_format(SV("' '"), SV("{:?}"), CharT(' '));
+
+  // *** Printable ***
+  test_format(SV("'a'"), SV("{:?}"), CharT('a'));
+  test_format(SV("'b'"), SV("{:?}"), CharT('b'));
+  test_format(SV("'c'"), SV("{:?}"), CharT('c'));
+
+  // *** Non-printable ***
+
+  // Control
+  test_format(SV("'\\u{0}'"), SV("{:?}"), CharT('\0'));
+  test_format(SV("'\\u{1f}'"), SV("{:?}"), CharT('\x1f'));
+
+  // Ill-formed
+  if constexpr (sizeof(CharT) == 1)
+    test_format(SV("'\\x{80}'"), SV("{:?}"), CharT('\x80'));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  if constexpr (sizeof(CharT) > 1) {
+    using V = std::basic_string_view<CharT>;
+
+    // Unicode fitting in a 16-bit wchar_t
+
+    // *** Non-printable ***
+
+    // Space_Separator
+    test_format(V{L"'\\u{a0}'"}, L"{:?}", L'\xa0');     // NO-BREAK SPACE
+    test_format(V{L"'\\u{3000}'"}, L"{:?}", L'\x3000'); // IDEOGRAPHIC SPACE
+
+    // Line_Separator
+    test_format(V{L"'\\u{2028}'"}, L"{:?}", L'\x2028'); // LINE SEPARATOR
+
+    // Paragraph_Separator
+    test_format(V{L"'\\u{2029}'"}, L"{:?}", L'\x2029'); // PARAGRAPH SEPARATOR
+
+    // Format
+    test_format(V{L"'\\u{ad}'"}, L"{:?}", L'\xad');     // SOFT HYPHEN
+    test_format(V{L"'\\u{600}'"}, L"{:?}", L'\x600');   // ARABIC NUMBER SIGN
+    test_format(V{L"'\\u{feff}'"}, L"{:?}", L'\xfeff'); // ZERO WIDTH NO-BREAK SPACE
+
+    if constexpr (sizeof(CharT) == 2) {
+      // Incomplete surrogate pair in UTF-16
+      test_format(V{L"'\\x{d800}'"}, L"{:?}", L'\xd800'); // <surrogate-D800>
+      test_format(V{L"'\\x{dfff}'"}, L"{:?}", L'\xdfff'); // <surrogate-DFFF>
+    } else {
+      test_format(V{L"'\\u{d800}'"}, L"{:?}", L'\xd800'); // <surrogate-D800>
+      test_format(V{L"'\\u{dfff}'"}, L"{:?}", L'\xdfff'); // <surrogate-DFFF>
+    }
+
+    // Private_Use
+    test_format(V{L"'\\u{e000}'"}, L"{:?}", L'\xe000'); // <private-use-E000>
+    test_format(V{L"'\\u{f8ff}'"}, L"{:?}", L'\xf8ff'); // <private-use-F8FF>
+
+    // Unassigned
+    test_format(V{L"'\\u{378}'"}, L"{:?}", L'\x378');   // <reserved-0378>
+    test_format(V{L"'\\u{1774}'"}, L"{:?}", L'\x1774'); // <reserved-1774>
+    test_format(V{L"'\\u{ffff}'"}, L"{:?}", L'\xffff'); // <noncharacter-FFFF>
+
+    // Grapheme Extended
+    test_format(V{L"'\\u{300}'"}, L"{:?}", L'\x300');   // COMBINING GRAVE ACCENT
+    test_format(V{L"'\\u{fe20}'"}, L"{:?}", L'\xfe20'); // VARIATION SELECTOR-1
+  }
+#  ifndef TEST_SHORT_WCHAR
+  if constexpr (sizeof(CharT) > 2) {
+    static_assert(sizeof(CharT) == 4, "add support for unexpected size");
+    // Unicode fitting in a 32-bit wchar_t
+
+    constexpr wchar_t x  = 0x1ffff;
+    constexpr uint32_t y = 0x1ffff;
+    static_assert(x == y);
+
+    using V = std::basic_string_view<CharT>;
+
+    // *** Non-printable ***
+    // Format
+    test_format(V{L"'\\u{110bd}'"}, L"{:?}", L'\x110bd'); // KAITHI NUMBER SIGN
+    test_format(V{L"'\\u{e007f}'"}, L"{:?}", L'\xe007f'); // CANCEL TAG
+
+    // Private_Use
+    test_format(V{L"'\\u{f0000}'"}, L"{:?}", L'\xf0000'); // <private-use-F0000>
+    test_format(V{L"'\\u{ffffd}'"}, L"{:?}", L'\xffffd'); // <private-use-FFFFD>
+
+    test_format(V{L"'\\u{100000}'"}, L"{:?}", L'\x100000'); // <private-use-100000>
+    test_format(V{L"'\\u{10fffd}'"}, L"{:?}", L'\x10fffd'); // <private-use-10FFFD>
+
+    // Unassigned
+    test_format(V{L"'\\u{1000c}'"}, L"{:?}", L'\x1000c');   // <reserved-1000c>
+    test_format(V{L"'\\u{fffff}'"}, L"{:?}", L'\xfffff');   // <noncharacter-FFFFF>
+    test_format(V{L"'\\u{10fffe}'"}, L"{:?}", L'\x10fffe'); // <noncharacter-10FFFE>
+
+    // Grapheme Extended
+    test_format(V{L"'\\u{101fd}'"}, L"{:?}", L'\x101fd'); // COMBINING OLD PERMIC LETTER AN
+    test_format(V{L"'\\u{e0100}'"}, L"{:?}", L'\xe0100'); // VARIATION SELECTOR-17
+
+    // Ill-formed
+    test_format(V{L"'\\x{110000}'"}, L"{:?}", L'\x110000');
+    test_format(V{L"'\\x{ffffffff}'"}, L"{:?}", L'\xffffffff');
+  }
+#  endif // TEST_SHORT_WCHAR
+#endif   // TEST_HAS_NO_WIDE_CHARACTERS
+}
+
+template <class CharT>
+void test_string() {
+  // *** P2286 examples ***
+  test_format(SV("[h\tllo]"), SV("[{}]"), SV("h\tllo"));
+  test_format(SV(R"(["h\tllo"])"), SV("[{:?}]"), SV("h\tllo"));
+  test_format(SV(R"(["Спасибо, Виктор ♥!"])"), SV("[{:?}]"), SV("Спасибо, Виктор ♥!"));
+
+  test_format(SV(R"(["\u{0} \n \t \u{2} \u{1b}"])"), SV("[{:?}]"), SV("\0 \n \t \x02 \x1b"));
+
+  if constexpr (sizeof(CharT) == 1) {
+    // Ill-formend UTF-8
+    test_format(SV(R"(["\x{c3}"])"), SV("[{:?}]"), "\xc3");
+    test_format(SV(R"(["\x{c3}("])"), SV("[{:?}]"), "\xc3\x28");
+  } else {
+    // Valid UTF-16 and UTF-32
+    test_format(SV("[\"\u00c3\"]"), SV("[{:?}]"), L"\xc3"); // LATIN CAPITAL LETTER A WITH TILDE
+    test_format(SV("[\"\u00c3(\"]"), SV("[{:?}]"), L"\xc3\x28");
+  }
+
+  test_format(SV(R"(["🤷🏻\u{200d}♂\u{fe0f}"])"), SV("[{:?}]"), SV("🤷🏻‍♂️"));
+
+  // *** Specical cases ***
+  test_format(SV(R"("\t\n\r\\'\" ")"), SV("{:?}"), SV("\t\n\r\\'\" "));
+
+  // *** Printable ***
+  test_format(SV(R"("abcdefg")"), SV("{:?}"), SV("abcdefg"));
+
+  // *** Non-printable ***
+
+  // Control
+  test_format(SV(R"("\u{0}\u{1f}")"), SV("{:?}"), SV("\0\x1f"));
+
+  // Ill-formed
+  if constexpr (sizeof(CharT) == 1)
+    test_format(SV(R"("\x{80}")"), SV("{:?}"), SV("\x80"));
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  if constexpr (sizeof(CharT) > 1) {
+    using V = std::basic_string_view<CharT>;
+
+    // Unicode fitting in a 16-bit wchar_t
+
+    // *** Non-printable ***
+
+    // Space_Separator
+    test_format(V{LR"("\u{a0}\u{3000}")"}, L"{:?}", L"\xa0\x3000");
+
+    // Line_Separator
+    test_format(V{LR"("\u{2028}")"}, L"{:?}", L"\x2028"); // LINE SEPARATOR
+
+    // Paragraph_Separator
+    test_format(V{LR"("\u{2029}")"}, L"{:?}", L"\x2029"); // PARAGRAPH SEPARATOR
+
+    // Format
+    test_format(V{LR"("\u{ad}\u{600}\u{feff}")"}, L"{:?}", L"\xad\x600\xfeff");
+
+    if constexpr (sizeof(CharT) == 2)
+      // Incomplete surrogate pair in UTF-16
+      test_format(V{LR"("\x{d800}")"}, L"{:?}", L"\xd800");
+    else
+      test_format(V{LR"("\u{d800}")"}, L"{:?}", L"\xd800");
+
+    // Private_Use
+    test_format(V{LR"("\u{e000}\u{f8ff}")"}, L"{:?}", L"\xe000\xf8ff");
+
+    // Unassigned
+    test_format(V{LR"("\u{378}\u{1774}\u{ffff}")"}, L"{:?}", L"\x378\x1774\xffff");
+
+    // Grapheme Extended
+    test_format(V{LR"("\u{300}\u{fe20}")"}, L"{:?}", L"\x300\xfe20");
+  }
+#  ifndef TEST_SHORT_WCHAR
+  if constexpr (sizeof(CharT) > 2) {
+    static_assert(sizeof(CharT) == 4, "add support for unexpected size");
+    // Unicode fitting in a 32-bit wchar_t
+
+    constexpr wchar_t x  = 0x1ffff;
+    constexpr uint32_t y = 0x1ffff;
+    static_assert(x == y);
+
+    using V = std::basic_string_view<CharT>;
+
+    // *** Non-printable ***
+    // Format
+    test_format(V{LR"("\u{110bd}\u{e007f}")"}, L"{:?}", L"\x110bd\xe007f");
+
+    // Private_Use
+    test_format(V{LR"("\u{f0000}\u{ffffd}\u{100000}\u{10fffd}")"}, L"{:?}", L"\xf0000\xffffd\x100000\x10fffd");
+
+    // Unassigned
+    test_format(V{LR"("\u{1000c}\u{fffff}\u{10fffe}")"}, L"{:?}", L"\x1000c\xfffff\x10fffe");
+
+    // Grapheme Extended
+    test_format(V{LR"("\u{101fd}\u{e0100}")"}, L"{:?}", L"\x101fd\xe0100");
+
+    // Ill-formed
+    test_format(V{LR"("\x{110000}\x{ffffffff}")"}, L"{:?}", L"\x110000\xffffffff");
+  }
+#  endif // TEST_SHORT_WCHAR
+#endif   // TEST_HAS_NO_WIDE_CHARACTERS
+}
+
+template <class CharT, class TestFunction>
+void test_format_functions(TestFunction check) {
+  // *** align-fill & width ***
+  check(SV(R"(***"hellö")"), SV("{:*>10?}"), SV("hellö")); // ö is LATIN SMALL LETTER O WITH DIAERESIS
+  check(SV(R"(*"hellö"**)"), SV("{:*^10?}"), SV("hellö"));
+  check(SV(R"("hellö"***)"), SV("{:*<10?}"), SV("hellö"));
+
+  check(SV(R"("hello\u{308}")"), SV("{:*>10?}"), SV("hello\u0308"));
+  check(SV(R"(***"hello\u{308}")"), SV("{:*>17?}"), SV("hello\u0308"));
+  check(SV(R"(*"hello\u{308}"**)"), SV("{:*^17?}"), SV("hello\u0308"));
+  check(SV(R"("hello\u{308}"***)"), SV("{:*<17?}"), SV("hello\u0308"));
+
+  check(SV(R"("hello 🤷🏻\u{200d}♂\u{fe0f}")"), SV("{:*>10?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"(***"hello 🤷🏻\u{200d}♂\u{fe0f}")"), SV("{:*>30?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"(*"hello 🤷🏻\u{200d}♂\u{fe0f}"**)"), SV("{:*^30?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂\u{fe0f}"***)"), SV("{:*<30?}"), SV("hello 🤷🏻‍♂️"));
+
+  // *** width ***
+  check(SV(R"("hellö"   )"), SV("{:10?}"), SV("hellö"));
+  check(SV(R"("hello\u{308}"   )"), SV("{:17?}"), SV("hello\u0308"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂\u{fe0f}"   )"), SV("{:30?}"), SV("hello 🤷🏻‍♂️"));
+
+  // *** precision ***
+  check(SV(R"("hell)"), SV("{:.5?}"), SV("hellö"));
+  check(SV(R"("hellö)"), SV("{:.6?}"), SV("hellö"));
+  check(SV(R"("hellö")"), SV("{:.7?}"), SV("hellö"));
+
+  check(SV(R"("hello )"), SV("{:.7?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello )"), SV("{:.8?}"), SV("hello 🤷🏻‍♂️")); // shrug is two columns
+  check(SV(R"("hello 🤷🏻)"), SV("{:.9?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\)"), SV("{:.10?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d})"), SV("{:.17?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂)"), SV("{:.18?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂\)"), SV("{:.19?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂\u{fe0f}")"), SV("{:.28?}"), SV("hello 🤷🏻‍♂️"));
+
+  // *** width & precision ***
+  check(SV(R"("hell#########################)"), SV("{:#<30.5?}"), SV("hellö"));
+  check(SV(R"("hellö########################)"), SV("{:#<30.6?}"), SV("hellö"));
+  check(SV(R"("hellö"#######################)"), SV("{:#<30.7?}"), SV("hellö"));
+
+  check(SV(R"("hello #######################)"), SV("{:#<30.7?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello #######################)"), SV("{:#<30.8?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻#####################)"), SV("{:#<30.9?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\####################)"), SV("{:#<30.10?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}#############)"), SV("{:#<30.17?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂############)"), SV("{:#<30.18?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂\###########)"), SV("{:#<30.19?}"), SV("hello 🤷🏻‍♂️"));
+  check(SV(R"("hello 🤷🏻\u{200d}♂\u{fe0f}"###)"), SV("{:#<30.28?}"), SV("hello 🤷🏻‍♂️"));
+}
+
+template <class CharT>
+void test() {
+  test_char<CharT>();
+  test_string<CharT>();
+
+  test_format_functions<CharT>(test_format);
+  test_format_functions<CharT>(test_format_to);
+  test_format_functions<CharT>(test_formatted_size);
+  test_format_functions<CharT>(test_format_to_n);
+}
+
+static void test_ill_formed_utf8() {
+  using namespace std::literals;
+
+  // Too few code units
+  test_format(R"("\x{df}")"sv, "{:?}", "\xdf");
+  test_format(R"("\x{ef}")"sv, "{:?}", "\xef");
+  test_format(R"("\x{ef}\x{bf}")"sv, "{:?}", "\xef\xbf");
+  test_format(R"("\x{f7}")"sv, "{:?}", "\xf7");
+  test_format(R"("\x{f7}\x{bf}")"sv, "{:?}", "\xf7\xbf");
+  test_format(R"("\x{f7}\x{bf}\x{bf}")"sv, "{:?}", "\xf7\xbf\xbf");
+
+  // Invalid continuation byte
+  test_format(R"("\x{df}a")"sv,
+              "{:?}",
+              "\xdf"
+              "a");
+  test_format(R"("\x{ef}a")"sv,
+              "{:?}",
+              "\xef"
+              "a");
+  test_format(R"("\x{ef}\x{bf}a")"sv,
+              "{:?}",
+              "\xef\xbf"
+              "a");
+  test_format(R"("\x{f7}a")"sv,
+              "{:?}",
+              "\xf7"
+              "a");
+  test_format(R"("\x{f7}\x{bf}a")"sv,
+              "{:?}",
+              "\xf7\xbf"
+              "a");
+  test_format(R"("\x{f7}\x{bf}\x{bf}a")"sv,
+              "{:?}",
+              "\xf7\xbf\xbf"
+              "a");
+
+  // Code unit out of range
+  test_format(R"("\u{10ffff}")"sv, "{:?}", "\xf4\x8f\xbf\xbf");               // last valid code point
+  test_format(R"("\x{f4}\x{90}\x{80}\x{80}")"sv, "{:?}", "\xf4\x90\x80\x80"); // first invalid code point
+  test_format(R"("\x{f5}\x{b1}\x{b2}\x{b3}")"sv, "{:?}", "\xf5\xb1\xb2\xb3");
+  test_format(R"("\x{f7}\x{bf}\x{bf}\x{bf}")"sv, "{:?}", "\xf7\xbf\xbf\xbf"); // largest encoded code point
+}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#  ifdef _LIBCPP_SHORT_WCHAR
+static void test_ill_formed_utf16() {
+  using namespace std::literals;
+
+  // Too few code units
+  test_format(LR"("\x{d800}")"sv, L"{:?}", L"\xd800");
+  test_format(LR"("\x{dbff}")"sv, L"{:?}", L"\xdbff");
+
+  // Start with low surrogate pair
+  test_format(LR"("\x{dc00}a")"sv,
+              L"{:?}",
+              L"\xdc00"
+              "a");
+  test_format(LR"("\x{dfff}a")"sv,
+              L"{:?}",
+              L"\xdfff"
+              "a");
+
+  // Only high surrogate pair
+  test_format(LR"("\x{d800}a")"sv,
+              L"{:?}",
+              L"\xd800"
+              "a");
+  test_format(LR"("\x{dbff}a")"sv,
+              L"{:?}",
+              L"\xdbff"
+              "a");
+}
+#  else // _LIBCPP_SHORT_WCHAR
+static void test_ill_formed_utf32() {
+  using namespace std::literals;
+
+  test_format(LR"("\u{10ffff}")"sv, L"{:?}", L"\x10ffff");     // last valid code point
+  test_format(LR"("\x{110000}")"sv, L"{:?}", L"\x110000");     // first invalid code point
+  test_format(LR"("\x{ffffffff}")"sv, L"{:?}", L"\xffffffff"); // largest encoded code point
+}
+
+#  endif // _LIBCPP_SHORT_WCHAR
+#endif   // TEST_HAS_NO_WIDE_CHARACTERS
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  test_ill_formed_utf8();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+#  ifdef _LIBCPP_SHORT_WCHAR
+  test_ill_formed_utf16();
+  assert(false);
+#  else  // _LIBCPP_SHORT_WCHAR
+  test_ill_formed_utf32();
+#  endif // _LIBCPP_SHORT_WCHAR
+#endif   // TEST_HAS_NO_WIDE_CHARACTERS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.locale.pass.cpp
new file mode 100644
index 0000000..ab34558
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.locale.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED:gcc-12
+
+// <format>
+
+// template<class... Args>
+//   string format(const locale& loc, format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   wstring format(const locale& loc, wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <cassert>
+#include <iostream>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+#include "assert_macros.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      std::basic_string<CharT> out = std::format(std::locale(), fmt, std::forward<Args>(args)...);
+      TEST_REQUIRE(
+          out == expected,
+          test_concat_message(
+              "\nFormat string   ", fmt.get(), "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format.locale.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::full>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::full>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.locale.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.locale.verify.cpp
new file mode 100644
index 0000000..de182c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.locale.verify.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class... Args>
+//   string format(const locale& loc, format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   wstring format(const locale& loc, wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <locale>
+
+#include "test_macros.h"
+
+// clang-format off
+
+void f() {
+  std::format(std::locale(), "{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), "{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format(std::locale(), L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(std::locale(), L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.pass.cpp
new file mode 100644
index 0000000..ca9d1d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// Note this formatter shows additional information when tests are failing.
+// This aids the development. Since other formatters fail in the same fashion
+// they don't have this additional output.
+
+// <format>
+
+// template<class... Args>
+//   string format(format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   wstring format(wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+#include "assert_macros.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+      TEST_REQUIRE(
+          out == expected,
+          test_concat_message(
+              "\nFormat string   ", fmt.get(), "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::full>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::full>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.verify.cpp
new file mode 100644
index 0000000..23c9c2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format.verify.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class... Args>
+//   string format(format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   wstring format(wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+
+#include "test_macros.h"
+
+// clang-format off
+
+void f() {
+  std::format("{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format(L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
+
+struct tiny {
+  int bit : 1;
+};
+
+void P2418()
+{
+  auto t = tiny{};
+  std::format("{}", t.bit); // expected-error{{non-const reference cannot bind to bit-field 'bit'}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format(L"{}", t.bit); // expected-error{{non-const reference cannot bind to bit-field 'bit'}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_tests.h b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_tests.h
new file mode 100644
index 0000000..86d11f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_tests.h
@@ -0,0 +1,2779 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_FORMAT_FORMAT_FUNCTIONS_FORMAT_TESTS_H
+#define TEST_STD_UTILITIES_FORMAT_FORMAT_FUNCTIONS_FORMAT_TESTS_H
+
+#include <format>
+
+#include <algorithm>
+#include <cassert>
+#include <charconv>
+#include <cmath>
+#include <cstdint>
+#include <iterator>
+
+#include "string_literal.h"
+#include "test_macros.h"
+#include "format.functions.common.h"
+
+// In this file the following template types are used:
+// TestFunction must be callable as check(expected-result, string-to-format, args-to-format...)
+// ExceptionTest must be callable as check_exception(expected-exception, string-to-format, args-to-format...)
+
+enum class execution_modus { partial, full };
+
+template <class CharT>
+std::vector<std::basic_string_view<CharT>> invalid_types(std::string_view valid) {
+  std::vector<std::basic_string_view<CharT>> result;
+
+#define CASE(T)                                                                                                        \
+case #T[0]:                                                                                                            \
+  result.push_back(SV("Invalid formatter type {:" #T "}"));                                                            \
+  break;
+
+#if TEST_STD_VER > 20
+  constexpr std::string_view types = "aAbBcdeEfFgGopsxX?";
+#else
+  constexpr std::string_view types = "aAbBcdeEfFgGopsxX";
+#endif
+
+  for (auto type : types) {
+    if (valid.find(type) != std::string::npos)
+      continue;
+
+    switch (type) {
+      CASE(a)
+      CASE(A)
+      CASE(b)
+      CASE(B)
+      CASE(c)
+      CASE(d)
+      CASE(e)
+      CASE(E)
+      CASE(f)
+      CASE(F)
+      CASE(g)
+      CASE(G)
+      CASE(o)
+      CASE(p)
+      CASE(s)
+      CASE(x)
+      CASE(X)
+      CASE(?)
+    case 0:
+      break;
+    default:
+      assert(false && "Add the type to the list of cases.");
+    }
+  }
+#undef CASE
+
+  return result;
+}
+
+// Using a const ref for world and universe so a string literal will be a character array.
+// When passed as character array W and U have different types.
+template <class CharT, class W, class U, class TestFunction, class ExceptionTest>
+void format_test_string(const W& world, const U& universe, TestFunction check, ExceptionTest check_exception) {
+
+  // *** Valid input tests ***
+  // Unused argument is ignored. TODO FMT what does the Standard mandate?
+  check(SV("hello world"), SV("hello {}"), world, universe);
+  check(SV("hello world and universe"), SV("hello {} and {}"), world, universe);
+  check(SV("hello world"), SV("hello {0}"), world, universe);
+  check(SV("hello universe"), SV("hello {1}"), world, universe);
+  check(SV("hello universe and world"), SV("hello {1} and {0}"), world, universe);
+
+  check(SV("hello world"), SV("hello {:_>}"), world);
+  check(SV("hello world   "), SV("hello {:8}"), world);
+  check(SV("hello    world"), SV("hello {:>8}"), world);
+  check(SV("hello ___world"), SV("hello {:_>8}"), world);
+  check(SV("hello _world__"), SV("hello {:_^8}"), world);
+  check(SV("hello world___"), SV("hello {:_<8}"), world);
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("hello :::world"), SV("hello {::>8}"), world);
+  check(SV("hello <<<world"), SV("hello {:<>8}"), world);
+  check(SV("hello ^^^world"), SV("hello {:^>8}"), world);
+
+  check(SV("hello $world"), SV("hello {:$>{}}"), world, 6);
+  check(SV("hello $world"), SV("hello {0:$>{1}}"), world, 6);
+  check(SV("hello $world"), SV("hello {1:$>{0}}"), 6, world);
+
+  check(SV("hello world"), SV("hello {:.5}"), world);
+  check(SV("hello unive"), SV("hello {:.5}"), universe);
+
+  check(SV("hello univer"), SV("hello {:.{}}"), universe, 6);
+  check(SV("hello univer"), SV("hello {0:.{1}}"), universe, 6);
+  check(SV("hello univer"), SV("hello {1:.{0}}"), 6, universe);
+
+  check(SV("hello %world%"), SV("hello {:%^7.7}"), world);
+  check(SV("hello univers"), SV("hello {:%^7.7}"), universe);
+  check(SV("hello %world%"), SV("hello {:%^{}.{}}"), world, 7, 7);
+  check(SV("hello %world%"), SV("hello {0:%^{1}.{2}}"), world, 7, 7);
+  check(SV("hello %world%"), SV("hello {0:%^{2}.{1}}"), world, 7, 7);
+  check(SV("hello %world%"), SV("hello {1:%^{0}.{2}}"), 7, world, 7);
+
+  check(SV("hello world"), SV("hello {:_>s}"), world);
+  check(SV("hello $world"), SV("hello {:$>{}s}"), world, 6);
+  check(SV("hello world"), SV("hello {:.5s}"), world);
+  check(SV("hello univer"), SV("hello {:.{}s}"), universe, 6);
+  check(SV("hello %world%"), SV("hello {:%^7.7s}"), world);
+
+  check(SV("hello #####uni"), SV("hello {:#>8.3s}"), universe);
+  check(SV("hello ##uni###"), SV("hello {:#^8.3s}"), universe);
+  check(SV("hello uni#####"), SV("hello {:#<8.3s}"), universe);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("hello {:-}"), world);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("hello {:#}"), world);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("hello {:0}"), world);
+
+  // *** width ***
+  // Width 0 allowed, but not useful for string arguments.
+  check(SV("hello world"), SV("hello {:{}}"), world, 0);
+
+#ifdef _LIBCPP_VERSION
+  // This limit isn't specified in the Standard.
+  static_assert(std::__format::__number_max == 2'147'483'647, "Update the assert and the test.");
+  check_exception("The numeric value of the format-spec is too large", SV("{:2147483648}"), world);
+  check_exception("The numeric value of the format-spec is too large", SV("{:5000000000}"), world);
+  check_exception("The numeric value of the format-spec is too large", SV("{:10000000000}"), world);
+#endif
+
+  check_exception("A format-spec arg-id replacement shouldn't have a negative value", SV("hello {:{}}"), world, -1);
+  check_exception("A format-spec arg-id replacement exceeds the maximum supported value", SV("hello {:{}}"), world,
+                  unsigned(-1));
+  check_exception("Argument index out of bounds", SV("hello {:{}}"), world);
+  check_exception("A format-spec arg-id replacement argument isn't an integral type", SV("hello {:{}}"), world,
+                  universe);
+  check_exception("Using manual argument numbering in automatic argument numbering mode", SV("hello {:{0}}"), world, 1);
+  check_exception("Using automatic argument numbering in manual argument numbering mode", SV("hello {0:{}}"), world, 1);
+  // Arg-id may not have leading zeros.
+  check_exception("Invalid arg-id", SV("hello {0:{01}}"), world, 1);
+
+  // *** precision ***
+#ifdef _LIBCPP_VERSION
+  // This limit isn't specified in the Standard.
+  static_assert(std::__format::__number_max == 2'147'483'647, "Update the assert and the test.");
+  check_exception("The numeric value of the format-spec is too large", SV("{:.2147483648}"), world);
+  check_exception("The numeric value of the format-spec is too large", SV("{:.5000000000}"), world);
+  check_exception("The numeric value of the format-spec is too large", SV("{:.10000000000}"), world);
+#endif
+
+  // Precision 0 allowed, but not useful for string arguments.
+  check(SV("hello "), SV("hello {:.{}}"), world, 0);
+  // Precision may have leading zeros. Secondly tests the value is still base 10.
+  check(SV("hello 0123456789"), SV("hello {:.000010}"), STR("0123456789abcdef"));
+  check_exception("A format-spec arg-id replacement shouldn't have a negative value", SV("hello {:.{}}"), world, -1);
+  check_exception("A format-spec arg-id replacement exceeds the maximum supported value", SV("hello {:.{}}"), world,
+                  ~0u);
+  check_exception("Argument index out of bounds", SV("hello {:.{}}"), world);
+  check_exception("A format-spec arg-id replacement argument isn't an integral type", SV("hello {:.{}}"), world,
+                  universe);
+  check_exception("Using manual argument numbering in automatic argument numbering mode", SV("hello {:.{0}}"), world,
+                  1);
+  check_exception("Using automatic argument numbering in manual argument numbering mode", SV("hello {0:.{}}"), world,
+                  1);
+  // Arg-id may not have leading zeros.
+  check_exception("Invalid arg-id", SV("hello {0:.{01}}"), world, 1);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("hello {:L}"), world);
+
+  // *** type ***
+#if TEST_STD_VER > 20
+  const char* valid_types = "s?";
+#else
+  const char* valid_types = "s";
+#endif
+  for (const auto& fmt : invalid_types<CharT>(valid_types))
+    check_exception("The format-spec type has a type not supported for a string argument", fmt, world);
+}
+
+template <class CharT, class TestFunction>
+void format_test_string_unicode([[maybe_unused]] TestFunction check) {
+  // unicode.pass.cpp and ascii.pass.cpp have additional tests.
+#ifndef TEST_HAS_NO_UNICODE
+  // Make sure all possible types are tested. For clarity don't use macros.
+  if constexpr (std::same_as<CharT, char>) {
+    const char* c_string = "aßc";
+    check(SV("*aßc*"), SV("{:*^5}"), c_string);
+    check(SV("*aß*"), SV("{:*^4.2}"), c_string);
+
+    check(SV("*aßc*"), SV("{:*^5}"), const_cast<char*>(c_string));
+    check(SV("*aß*"), SV("{:*^4.2}"), const_cast<char*>(c_string));
+
+    check(SV("*aßc*"), SV("{:*^5}"), "aßc");
+    check(SV("*aß*"), SV("{:*^4.2}"), "aßc");
+
+    check(SV("*aßc*"), SV("{:*^5}"), std::string("aßc"));
+    check(SV("*aß*"), SV("{:*^4.2}"), std::string("aßc"));
+
+    check(SV("*aßc*"), SV("{:*^5}"), std::string_view("aßc"));
+    check(SV("*aß*"), SV("{:*^4.2}"), std::string_view("aßc"));
+  }
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  else {
+    const wchar_t* c_string = L"aßc";
+    check(SV("*aßc*"), SV("{:*^5}"), c_string);
+    check(SV("*aß*"), SV("{:*^4.2}"), c_string);
+
+    check(SV("*aßc*"), SV("{:*^5}"), const_cast<wchar_t*>(c_string));
+    check(SV("*aß*"), SV("{:*^4.2}"), const_cast<wchar_t*>(c_string));
+
+    check(SV("*aßc*"), SV("{:*^5}"), L"aßc");
+    check(SV("*aß*"), SV("{:*^4.2}"), L"aßc");
+
+    check(SV("*aßc*"), SV("{:*^5}"), std::wstring(L"aßc"));
+    check(SV("*aß*"), SV("{:*^4.2}"), std::wstring(L"aßc"));
+
+    check(SV("*aßc*"), SV("{:*^5}"), std::wstring_view(L"aßc"));
+    check(SV("*aß*"), SV("{:*^4.2}"), std::wstring_view(L"aßc"));
+  }
+#  endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+  // ß requires one column
+  check(SV("aßc"), SV("{}"), STR("aßc"));
+
+  check(SV("aßc"), SV("{:.3}"), STR("aßc"));
+  check(SV("aß"), SV("{:.2}"), STR("aßc"));
+  check(SV("a"), SV("{:.1}"), STR("aßc"));
+
+  check(SV("aßc"), SV("{:3.3}"), STR("aßc"));
+  check(SV("aß"), SV("{:2.2}"), STR("aßc"));
+  check(SV("a"), SV("{:1.1}"), STR("aßc"));
+
+  check(SV("aßc---"), SV("{:-<6}"), STR("aßc"));
+  check(SV("-aßc--"), SV("{:-^6}"), STR("aßc"));
+  check(SV("---aßc"), SV("{:->6}"), STR("aßc"));
+
+  // \u1000 requires two columns
+  check(SV("a\u1110c"), SV("{}"), STR("a\u1110c"));
+
+  check(SV("a\u1100c"), SV("{:.4}"), STR("a\u1100c"));
+  check(SV("a\u1100"), SV("{:.3}"), STR("a\u1100c"));
+  check(SV("a"), SV("{:.2}"), STR("a\u1100c"));
+  check(SV("a"), SV("{:.1}"), STR("a\u1100c"));
+
+  check(SV("a\u1100c"), SV("{:-<4.4}"), STR("a\u1100c"));
+  check(SV("a\u1100"), SV("{:-<3.3}"), STR("a\u1100c"));
+  check(SV("a-"), SV("{:-<2.2}"), STR("a\u1100c"));
+  check(SV("a"), SV("{:-<1.1}"), STR("a\u1100c"));
+
+  check(SV("a\u1110c---"), SV("{:-<7}"), STR("a\u1110c"));
+  check(SV("-a\u1110c--"), SV("{:-^7}"), STR("a\u1110c"));
+  check(SV("---a\u1110c"), SV("{:->7}"), STR("a\u1110c"));
+
+  // Examples used in P1868R2
+  check(SV("*\u0041*"), SV("{:*^3}"), STR("\u0041")); // { LATIN CAPITAL LETTER A }
+  check(SV("*\u00c1*"), SV("{:*^3}"), STR("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
+  check(SV("*\u0041\u0301*"),
+        SV("{:*^3}"),
+        STR("\u0041\u0301"));                         // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
+  check(SV("*\u0132*"), SV("{:*^3}"), STR("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
+  check(SV("*\u0394*"), SV("{:*^3}"), STR("\u0394")); // { GREEK CAPITAL LETTER DELTA }
+
+  check(SV("*\u0429*"), SV("{:*^3}"), STR("\u0429"));         // { CYRILLIC CAPITAL LETTER SHCHA }
+  check(SV("*\u05d0*"), SV("{:*^3}"), STR("\u05d0"));         // { HEBREW LETTER ALEF }
+  check(SV("*\u0634*"), SV("{:*^3}"), STR("\u0634"));         // { ARABIC LETTER SHEEN }
+  check(SV("*\u3009*"), SV("{:*^4}"), STR("\u3009"));         // { RIGHT-POINTING ANGLE BRACKET }
+  check(SV("*\u754c*"), SV("{:*^4}"), STR("\u754c"));         // { CJK Unified Ideograph-754C }
+  check(SV("*\U0001f921*"), SV("{:*^4}"), STR("\U0001f921")); // { UNICORN FACE }
+  check(SV("*\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466*"),
+        SV("{:*^4}"),
+        STR("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
+#endif // TEST_HAS_NO_UNICODE
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_string_tests(TestFunction check, ExceptionTest check_exception) {
+  std::basic_string<CharT> world = STR("world");
+  std::basic_string<CharT> universe = STR("universe");
+
+  // Test a string literal in a way it won't decay to a pointer.
+  if constexpr (std::same_as<CharT, char>)
+    format_test_string<CharT>("world", "universe", check, check_exception);
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  else
+    format_test_string<CharT>(L"world", L"universe", check, check_exception);
+#endif
+
+  format_test_string<CharT>(world.c_str(), universe.c_str(), check, check_exception);
+  format_test_string<CharT>(const_cast<CharT*>(world.c_str()), const_cast<CharT*>(universe.c_str()), check,
+                            check_exception);
+  format_test_string<CharT>(std::basic_string_view<CharT>(world), std::basic_string_view<CharT>(universe), check,
+                            check_exception);
+  format_test_string<CharT>(world, universe, check, check_exception);
+  format_test_string_unicode<CharT>(check);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_bool(TestFunction check, ExceptionTest check_exception) {
+
+  // *** align-fill & width ***
+  check(SV("answer is 'true   '"), SV("answer is '{:7}'"), true);
+  check(SV("answer is '   true'"), SV("answer is '{:>7}'"), true);
+  check(SV("answer is 'true   '"), SV("answer is '{:<7}'"), true);
+  check(SV("answer is ' true  '"), SV("answer is '{:^7}'"), true);
+
+  check(SV("answer is 'false   '"), SV("answer is '{:8s}'"), false);
+  check(SV("answer is '   false'"), SV("answer is '{:>8s}'"), false);
+  check(SV("answer is 'false   '"), SV("answer is '{:<8s}'"), false);
+  check(SV("answer is ' false  '"), SV("answer is '{:^8s}'"), false);
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::true'"), SV("answer is '{::>7}'"), true);
+  check(SV("answer is 'true:::'"), SV("answer is '{::<7}'"), true);
+  check(SV("answer is ':true::'"), SV("answer is '{::^7}'"), true);
+
+  check(SV("answer is '---false'"), SV("answer is '{:->8s}'"), false);
+  check(SV("answer is 'false---'"), SV("answer is '{:-<8s}'"), false);
+  check(SV("answer is '-false--'"), SV("answer is '{:-^8s}'"), false);
+
+  // *** Sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:-}"), true);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:+}"), true);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{: }"), true);
+
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:-s}"), true);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:+s}"), true);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{: s}"), true);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{:#}"), true);
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{:#s}"), true);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{:0}"), true);
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{:0s}"), true);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), true);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0}"), true);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42}"), true);
+
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.s}"), true);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0s}"), true);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42s}"), true);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("bBdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, true);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_bool_as_integer(TestFunction check, ExceptionTest check_exception) {
+  // *** align-fill & width ***
+  check(SV("answer is '1'"), SV("answer is '{:<1d}'"), true);
+  check(SV("answer is '1 '"), SV("answer is '{:<2d}'"), true);
+  check(SV("answer is '0 '"), SV("answer is '{:<2d}'"), false);
+
+  check(SV("answer is '     1'"), SV("answer is '{:6d}'"), true);
+  check(SV("answer is '     1'"), SV("answer is '{:>6d}'"), true);
+  check(SV("answer is '1     '"), SV("answer is '{:<6d}'"), true);
+  check(SV("answer is '  1   '"), SV("answer is '{:^6d}'"), true);
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::::0'"), SV("answer is '{::>6d}'"), false);
+  check(SV("answer is '0:::::'"), SV("answer is '{::<6d}'"), false);
+  check(SV("answer is '::0:::'"), SV("answer is '{::^6d}'"), false);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '     1'"), SV("answer is '{:>06d}'"), true);
+  check(SV("answer is '1     '"), SV("answer is '{:<06d}'"), true);
+  check(SV("answer is '  1   '"), SV("answer is '{:^06d}'"), true);
+
+  // *** Sign ***
+  check(SV("answer is 1"), SV("answer is {:d}"), true);
+  check(SV("answer is 0"), SV("answer is {:-d}"), false);
+  check(SV("answer is +1"), SV("answer is {:+d}"), true);
+  check(SV("answer is  0"), SV("answer is {: d}"), false);
+
+  // *** alternate form ***
+  check(SV("answer is +1"), SV("answer is {:+#d}"), true);
+  check(SV("answer is +1"), SV("answer is {:+b}"), true);
+  check(SV("answer is +0b1"), SV("answer is {:+#b}"), true);
+  check(SV("answer is +0B1"), SV("answer is {:+#B}"), true);
+  check(SV("answer is +1"), SV("answer is {:+o}"), true);
+  check(SV("answer is +01"), SV("answer is {:+#o}"), true);
+  check(SV("answer is +1"), SV("answer is {:+x}"), true);
+  check(SV("answer is +0x1"), SV("answer is {:+#x}"), true);
+  check(SV("answer is +1"), SV("answer is {:+X}"), true);
+  check(SV("answer is +0X1"), SV("answer is {:+#X}"), true);
+
+  check(SV("answer is 0"), SV("answer is {:#d}"), false);
+  check(SV("answer is 0"), SV("answer is {:b}"), false);
+  check(SV("answer is 0b0"), SV("answer is {:#b}"), false);
+  check(SV("answer is 0B0"), SV("answer is {:#B}"), false);
+  check(SV("answer is 0"), SV("answer is {:o}"), false);
+  check(SV("answer is 0"), SV("answer is {:#o}"), false);
+  check(SV("answer is 0"), SV("answer is {:x}"), false);
+  check(SV("answer is 0x0"), SV("answer is {:#x}"), false);
+  check(SV("answer is 0"), SV("answer is {:X}"), false);
+  check(SV("answer is 0X0"), SV("answer is {:#X}"), false);
+
+  // *** zero-padding & width ***
+  check(SV("answer is +00000000001"), SV("answer is {:+#012d}"), true);
+  check(SV("answer is +00000000001"), SV("answer is {:+012b}"), true);
+  check(SV("answer is +0b000000001"), SV("answer is {:+#012b}"), true);
+  check(SV("answer is +0B000000001"), SV("answer is {:+#012B}"), true);
+  check(SV("answer is +00000000001"), SV("answer is {:+012o}"), true);
+  check(SV("answer is +00000000001"), SV("answer is {:+#012o}"), true);
+  check(SV("answer is +00000000001"), SV("answer is {:+012x}"), true);
+  check(SV("answer is +0x000000001"), SV("answer is {:+#012x}"), true);
+  check(SV("answer is +00000000001"), SV("answer is {:+012X}"), true);
+  check(SV("answer is +0X000000001"), SV("answer is {:+#012X}"), true);
+
+  check(SV("answer is 000000000000"), SV("answer is {:#012d}"), false);
+  check(SV("answer is 000000000000"), SV("answer is {:012b}"), false);
+  check(SV("answer is 0b0000000000"), SV("answer is {:#012b}"), false);
+  check(SV("answer is 0B0000000000"), SV("answer is {:#012B}"), false);
+  check(SV("answer is 000000000000"), SV("answer is {:012o}"), false);
+  check(SV("answer is 000000000000"), SV("answer is {:#012o}"), false);
+  check(SV("answer is 000000000000"), SV("answer is {:012x}"), false);
+  check(SV("answer is 0x0000000000"), SV("answer is {:#012x}"), false);
+  check(SV("answer is 000000000000"), SV("answer is {:012X}"), false);
+  check(SV("answer is 0X0000000000"), SV("answer is {:#012X}"), false);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), true);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0}"), true);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42}"), true);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("bBcdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, true);
+}
+
+template <class I, class CharT, class TestFunction, class ExceptionTest>
+void format_test_integer_as_integer(TestFunction check, ExceptionTest check_exception) {
+  // *** align-fill & width ***
+  check(SV("answer is '42'"), SV("answer is '{:<1}'"), I(42));
+  check(SV("answer is '42'"), SV("answer is '{:<2}'"), I(42));
+  check(SV("answer is '42 '"), SV("answer is '{:<3}'"), I(42));
+
+  check(SV("answer is '     42'"), SV("answer is '{:7}'"), I(42));
+  check(SV("answer is '     42'"), SV("answer is '{:>7}'"), I(42));
+  check(SV("answer is '42     '"), SV("answer is '{:<7}'"), I(42));
+  check(SV("answer is '  42   '"), SV("answer is '{:^7}'"), I(42));
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::::42'"), SV("answer is '{::>7}'"), I(42));
+  check(SV("answer is '42:::::'"), SV("answer is '{::<7}'"), I(42));
+  check(SV("answer is '::42:::'"), SV("answer is '{::^7}'"), I(42));
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '     42'"), SV("answer is '{:>07}'"), I(42));
+  check(SV("answer is '42     '"), SV("answer is '{:<07}'"), I(42));
+  check(SV("answer is '  42   '"), SV("answer is '{:^07}'"), I(42));
+
+  // *** Sign ***
+  if constexpr (std::signed_integral<I>)
+    check(SV("answer is -42"), SV("answer is {}"), I(-42));
+  check(SV("answer is 0"), SV("answer is {}"), I(0));
+  check(SV("answer is 42"), SV("answer is {}"), I(42));
+
+  if constexpr (std::signed_integral<I>)
+    check(SV("answer is -42"), SV("answer is {:-}"), I(-42));
+  check(SV("answer is 0"), SV("answer is {:-}"), I(0));
+  check(SV("answer is 42"), SV("answer is {:-}"), I(42));
+
+  if constexpr (std::signed_integral<I>)
+    check(SV("answer is -42"), SV("answer is {:+}"), I(-42));
+  check(SV("answer is +0"), SV("answer is {:+}"), I(0));
+  check(SV("answer is +42"), SV("answer is {:+}"), I(42));
+
+  if constexpr (std::signed_integral<I>)
+    check(SV("answer is -42"), SV("answer is {: }"), I(-42));
+  check(SV("answer is  0"), SV("answer is {: }"), I(0));
+  check(SV("answer is  42"), SV("answer is {: }"), I(42));
+
+  // *** alternate form ***
+  if constexpr (std::signed_integral<I>) {
+    check(SV("answer is -42"), SV("answer is {:#}"), I(-42));
+    check(SV("answer is -42"), SV("answer is {:#d}"), I(-42));
+    check(SV("answer is -101010"), SV("answer is {:b}"), I(-42));
+    check(SV("answer is -0b101010"), SV("answer is {:#b}"), I(-42));
+    check(SV("answer is -0B101010"), SV("answer is {:#B}"), I(-42));
+    check(SV("answer is -52"), SV("answer is {:o}"), I(-42));
+    check(SV("answer is -052"), SV("answer is {:#o}"), I(-42));
+    check(SV("answer is -2a"), SV("answer is {:x}"), I(-42));
+    check(SV("answer is -0x2a"), SV("answer is {:#x}"), I(-42));
+    check(SV("answer is -2A"), SV("answer is {:X}"), I(-42));
+    check(SV("answer is -0X2A"), SV("answer is {:#X}"), I(-42));
+  }
+  check(SV("answer is 0"), SV("answer is {:#}"), I(0));
+  check(SV("answer is 0"), SV("answer is {:#d}"), I(0));
+  check(SV("answer is 0"), SV("answer is {:b}"), I(0));
+  check(SV("answer is 0b0"), SV("answer is {:#b}"), I(0));
+  check(SV("answer is 0B0"), SV("answer is {:#B}"), I(0));
+  check(SV("answer is 0"), SV("answer is {:o}"), I(0));
+  check(SV("answer is 0"), SV("answer is {:#o}"), I(0));
+  check(SV("answer is 0"), SV("answer is {:x}"), I(0));
+  check(SV("answer is 0x0"), SV("answer is {:#x}"), I(0));
+  check(SV("answer is 0"), SV("answer is {:X}"), I(0));
+  check(SV("answer is 0X0"), SV("answer is {:#X}"), I(0));
+
+  check(SV("answer is +42"), SV("answer is {:+#}"), I(42));
+  check(SV("answer is +42"), SV("answer is {:+#d}"), I(42));
+  check(SV("answer is +101010"), SV("answer is {:+b}"), I(42));
+  check(SV("answer is +0b101010"), SV("answer is {:+#b}"), I(42));
+  check(SV("answer is +0B101010"), SV("answer is {:+#B}"), I(42));
+  check(SV("answer is +52"), SV("answer is {:+o}"), I(42));
+  check(SV("answer is +052"), SV("answer is {:+#o}"), I(42));
+  check(SV("answer is +2a"), SV("answer is {:+x}"), I(42));
+  check(SV("answer is +0x2a"), SV("answer is {:+#x}"), I(42));
+  check(SV("answer is +2A"), SV("answer is {:+X}"), I(42));
+  check(SV("answer is +0X2A"), SV("answer is {:+#X}"), I(42));
+
+  // *** zero-padding & width ***
+  if constexpr (std::signed_integral<I>) {
+    check(SV("answer is -00000000042"), SV("answer is {:#012}"), I(-42));
+    check(SV("answer is -00000000042"), SV("answer is {:#012d}"), I(-42));
+    check(SV("answer is -00000101010"), SV("answer is {:012b}"), I(-42));
+    check(SV("answer is -0b000101010"), SV("answer is {:#012b}"), I(-42));
+    check(SV("answer is -0B000101010"), SV("answer is {:#012B}"), I(-42));
+    check(SV("answer is -00000000052"), SV("answer is {:012o}"), I(-42));
+    check(SV("answer is -00000000052"), SV("answer is {:#012o}"), I(-42));
+    check(SV("answer is -0000000002a"), SV("answer is {:012x}"), I(-42));
+    check(SV("answer is -0x00000002a"), SV("answer is {:#012x}"), I(-42));
+    check(SV("answer is -0000000002A"), SV("answer is {:012X}"), I(-42));
+    check(SV("answer is -0X00000002A"), SV("answer is {:#012X}"), I(-42));
+  }
+
+  check(SV("answer is 000000000000"), SV("answer is {:#012}"), I(0));
+  check(SV("answer is 000000000000"), SV("answer is {:#012d}"), I(0));
+  check(SV("answer is 000000000000"), SV("answer is {:012b}"), I(0));
+  check(SV("answer is 0b0000000000"), SV("answer is {:#012b}"), I(0));
+  check(SV("answer is 0B0000000000"), SV("answer is {:#012B}"), I(0));
+  check(SV("answer is 000000000000"), SV("answer is {:012o}"), I(0));
+  check(SV("answer is 000000000000"), SV("answer is {:#012o}"), I(0));
+  check(SV("answer is 000000000000"), SV("answer is {:012x}"), I(0));
+  check(SV("answer is 0x0000000000"), SV("answer is {:#012x}"), I(0));
+  check(SV("answer is 000000000000"), SV("answer is {:012X}"), I(0));
+  check(SV("answer is 0X0000000000"), SV("answer is {:#012X}"), I(0));
+
+  check(SV("answer is +00000000042"), SV("answer is {:+#012}"), I(42));
+  check(SV("answer is +00000000042"), SV("answer is {:+#012d}"), I(42));
+  check(SV("answer is +00000101010"), SV("answer is {:+012b}"), I(42));
+  check(SV("answer is +0b000101010"), SV("answer is {:+#012b}"), I(42));
+  check(SV("answer is +0B000101010"), SV("answer is {:+#012B}"), I(42));
+  check(SV("answer is +00000000052"), SV("answer is {:+012o}"), I(42));
+  check(SV("answer is +00000000052"), SV("answer is {:+#012o}"), I(42));
+  check(SV("answer is +0000000002a"), SV("answer is {:+012x}"), I(42));
+  check(SV("answer is +0x00000002a"), SV("answer is {:+#012x}"), I(42));
+  check(SV("answer is +0000000002A"), SV("answer is {:+012X}"), I(42));
+  check(SV("answer is +0X00000002A"), SV("answer is {:+#012X}"), I(42));
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), I(0));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0}"), I(0));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42}"), I(0));
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("bBcdoxX"))
+    check_exception("The format-spec type has a type not supported for an integer argument", fmt, 42);
+}
+
+template <class I, class CharT, class TestFunction, class ExceptionTest>
+void format_test_integer_as_char(TestFunction check, ExceptionTest check_exception) {
+  // *** align-fill & width ***
+  check(SV("answer is '*     '"), SV("answer is '{:6c}'"), I(42));
+  check(SV("answer is '     *'"), SV("answer is '{:>6c}'"), I(42));
+  check(SV("answer is '*     '"), SV("answer is '{:<6c}'"), I(42));
+  check(SV("answer is '  *   '"), SV("answer is '{:^6c}'"), I(42));
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::::*'"), SV("answer is '{::>6c}'"), I(42));
+  check(SV("answer is '*:::::'"), SV("answer is '{::<6c}'"), I(42));
+  check(SV("answer is '::*:::'"), SV("answer is '{::^6c}'"), I(42));
+
+  // *** Sign ***
+  check(SV("answer is *"), SV("answer is {:c}"), I(42));
+  check_exception("A sign field isn't allowed in this format-spec", SV("answer is {:-c}"), I(42));
+  check_exception("A sign field isn't allowed in this format-spec", SV("answer is {:+c}"), I(42));
+  check_exception("A sign field isn't allowed in this format-spec", SV("answer is {: c}"), I(42));
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("answer is {:#c}"), I(42));
+
+  // *** zero-padding & width ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("answer is {:01c}"), I(42));
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.c}"), I(0));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0c}"), I(0));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42c}"), I(0));
+
+  // *** locale-specific form ***
+  // Note it has no effect but it's allowed.
+  check(SV("answer is '*'"), SV("answer is '{:Lc}'"), I(42));
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("bBcdoxX"))
+    check_exception("The format-spec type has a type not supported for an integer argument", fmt, I(42));
+
+  // *** Validate range ***
+  // The code has some duplications to keep the if statement readable.
+  if constexpr (std::signed_integral<CharT>) {
+    if constexpr (std::signed_integral<I> && sizeof(I) > sizeof(CharT)) {
+      check_exception("Integral value outside the range of the char type", SV("{:c}"), std::numeric_limits<I>::min());
+      check_exception("Integral value outside the range of the char type", SV("{:c}"), std::numeric_limits<I>::max());
+    } else if constexpr (std::unsigned_integral<I> && sizeof(I) >= sizeof(CharT)) {
+      check_exception("Integral value outside the range of the char type", SV("{:c}"), std::numeric_limits<I>::max());
+    }
+  } else if constexpr (sizeof(I) > sizeof(CharT)) {
+    check_exception("Integral value outside the range of the char type", SV("{:c}"), std::numeric_limits<I>::max());
+  }
+}
+
+template <class I, class CharT, class TestFunction, class ExceptionTest>
+void format_test_integer(TestFunction check, ExceptionTest check_exception) {
+  format_test_integer_as_integer<I, CharT>(check, check_exception);
+  format_test_integer_as_char<I, CharT>(check, check_exception);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_signed_integer(TestFunction check, ExceptionTest check_exception) {
+  format_test_integer<signed char, CharT>(check, check_exception);
+  format_test_integer<short, CharT>(check, check_exception);
+  format_test_integer<int, CharT>(check, check_exception);
+  format_test_integer<long, CharT>(check, check_exception);
+  format_test_integer<long long, CharT>(check, check_exception);
+#ifndef TEST_HAS_NO_INT128
+  format_test_integer<__int128_t, CharT>(check, check_exception);
+#endif
+  // *** check the minma and maxima ***
+  check(SV("-0b10000000"), SV("{:#b}"), std::numeric_limits<int8_t>::min());
+  check(SV("-0200"), SV("{:#o}"), std::numeric_limits<int8_t>::min());
+  check(SV("-128"), SV("{:#}"), std::numeric_limits<int8_t>::min());
+  check(SV("-0x80"), SV("{:#x}"), std::numeric_limits<int8_t>::min());
+
+  check(SV("-0b1000000000000000"), SV("{:#b}"), std::numeric_limits<int16_t>::min());
+  check(SV("-0100000"), SV("{:#o}"), std::numeric_limits<int16_t>::min());
+  check(SV("-32768"), SV("{:#}"), std::numeric_limits<int16_t>::min());
+  check(SV("-0x8000"), SV("{:#x}"), std::numeric_limits<int16_t>::min());
+
+  check(SV("-0b10000000000000000000000000000000"), SV("{:#b}"), std::numeric_limits<int32_t>::min());
+  check(SV("-020000000000"), SV("{:#o}"), std::numeric_limits<int32_t>::min());
+  check(SV("-2147483648"), SV("{:#}"), std::numeric_limits<int32_t>::min());
+  check(SV("-0x80000000"), SV("{:#x}"), std::numeric_limits<int32_t>::min());
+
+  check(SV("-0b1000000000000000000000000000000000000000000000000000000000000000"),
+        SV("{:#b}"),
+        std::numeric_limits<int64_t>::min());
+  check(SV("-01000000000000000000000"), SV("{:#o}"), std::numeric_limits<int64_t>::min());
+  check(SV("-9223372036854775808"), SV("{:#}"), std::numeric_limits<int64_t>::min());
+  check(SV("-0x8000000000000000"), SV("{:#x}"), std::numeric_limits<int64_t>::min());
+
+#ifndef TEST_HAS_NO_INT128
+  check(SV("-0b1000000000000000000000000000000000000000000000000000000000000000"
+           "0000000000000000000000000000000000000000000000000000000000000000"),
+        SV("{:#b}"),
+        std::numeric_limits<__int128_t>::min());
+  check(SV("-02000000000000000000000000000000000000000000"), SV("{:#o}"), std::numeric_limits<__int128_t>::min());
+  check(SV("-170141183460469231731687303715884105728"), SV("{:#}"), std::numeric_limits<__int128_t>::min());
+  check(SV("-0x80000000000000000000000000000000"), SV("{:#x}"), std::numeric_limits<__int128_t>::min());
+#endif
+
+  check(SV("0b1111111"), SV("{:#b}"), std::numeric_limits<int8_t>::max());
+  check(SV("0177"), SV("{:#o}"), std::numeric_limits<int8_t>::max());
+  check(SV("127"), SV("{:#}"), std::numeric_limits<int8_t>::max());
+  check(SV("0x7f"), SV("{:#x}"), std::numeric_limits<int8_t>::max());
+
+  check(SV("0b111111111111111"), SV("{:#b}"), std::numeric_limits<int16_t>::max());
+  check(SV("077777"), SV("{:#o}"), std::numeric_limits<int16_t>::max());
+  check(SV("32767"), SV("{:#}"), std::numeric_limits<int16_t>::max());
+  check(SV("0x7fff"), SV("{:#x}"), std::numeric_limits<int16_t>::max());
+
+  check(SV("0b1111111111111111111111111111111"), SV("{:#b}"), std::numeric_limits<int32_t>::max());
+  check(SV("017777777777"), SV("{:#o}"), std::numeric_limits<int32_t>::max());
+  check(SV("2147483647"), SV("{:#}"), std::numeric_limits<int32_t>::max());
+  check(SV("0x7fffffff"), SV("{:#x}"), std::numeric_limits<int32_t>::max());
+
+  check(SV("0b111111111111111111111111111111111111111111111111111111111111111"),
+        SV("{:#b}"),
+        std::numeric_limits<int64_t>::max());
+  check(SV("0777777777777777777777"), SV("{:#o}"), std::numeric_limits<int64_t>::max());
+  check(SV("9223372036854775807"), SV("{:#}"), std::numeric_limits<int64_t>::max());
+  check(SV("0x7fffffffffffffff"), SV("{:#x}"), std::numeric_limits<int64_t>::max());
+
+#ifndef TEST_HAS_NO_INT128
+  check(SV("0b111111111111111111111111111111111111111111111111111111111111111"
+           "1111111111111111111111111111111111111111111111111111111111111111"),
+        SV("{:#b}"),
+        std::numeric_limits<__int128_t>::max());
+  check(SV("01777777777777777777777777777777777777777777"), SV("{:#o}"), std::numeric_limits<__int128_t>::max());
+  check(SV("170141183460469231731687303715884105727"), SV("{:#}"), std::numeric_limits<__int128_t>::max());
+  check(SV("0x7fffffffffffffffffffffffffffffff"), SV("{:#x}"), std::numeric_limits<__int128_t>::max());
+#endif
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_unsigned_integer(TestFunction check, ExceptionTest check_exception) {
+  format_test_integer<unsigned char, CharT>(check, check_exception);
+  format_test_integer<unsigned short, CharT>(check, check_exception);
+  format_test_integer<unsigned, CharT>(check, check_exception);
+  format_test_integer<unsigned long, CharT>(check, check_exception);
+  format_test_integer<unsigned long long, CharT>(check, check_exception);
+#ifndef TEST_HAS_NO_INT128
+  format_test_integer<__uint128_t, CharT>(check, check_exception);
+#endif
+  // *** test the maxima ***
+  check(SV("0b11111111"), SV("{:#b}"), std::numeric_limits<uint8_t>::max());
+  check(SV("0377"), SV("{:#o}"), std::numeric_limits<uint8_t>::max());
+  check(SV("255"), SV("{:#}"), std::numeric_limits<uint8_t>::max());
+  check(SV("0xff"), SV("{:#x}"), std::numeric_limits<uint8_t>::max());
+
+  check(SV("0b1111111111111111"), SV("{:#b}"), std::numeric_limits<uint16_t>::max());
+  check(SV("0177777"), SV("{:#o}"), std::numeric_limits<uint16_t>::max());
+  check(SV("65535"), SV("{:#}"), std::numeric_limits<uint16_t>::max());
+  check(SV("0xffff"), SV("{:#x}"), std::numeric_limits<uint16_t>::max());
+
+  check(SV("0b11111111111111111111111111111111"), SV("{:#b}"), std::numeric_limits<uint32_t>::max());
+  check(SV("037777777777"), SV("{:#o}"), std::numeric_limits<uint32_t>::max());
+  check(SV("4294967295"), SV("{:#}"), std::numeric_limits<uint32_t>::max());
+  check(SV("0xffffffff"), SV("{:#x}"), std::numeric_limits<uint32_t>::max());
+
+  check(SV("0b1111111111111111111111111111111111111111111111111111111111111111"),
+        SV("{:#b}"),
+        std::numeric_limits<uint64_t>::max());
+  check(SV("01777777777777777777777"), SV("{:#o}"), std::numeric_limits<uint64_t>::max());
+  check(SV("18446744073709551615"), SV("{:#}"), std::numeric_limits<uint64_t>::max());
+  check(SV("0xffffffffffffffff"), SV("{:#x}"), std::numeric_limits<uint64_t>::max());
+
+#ifndef TEST_HAS_NO_INT128
+  check(SV("0b1111111111111111111111111111111111111111111111111111111111111111"
+           "1111111111111111111111111111111111111111111111111111111111111111"),
+        SV("{:#b}"),
+        std::numeric_limits<__uint128_t>::max());
+  check(SV("03777777777777777777777777777777777777777777"), SV("{:#o}"), std::numeric_limits<__uint128_t>::max());
+  check(SV("340282366920938463463374607431768211455"), SV("{:#}"), std::numeric_limits<__uint128_t>::max());
+  check(SV("0xffffffffffffffffffffffffffffffff"), SV("{:#x}"), std::numeric_limits<__uint128_t>::max());
+#endif
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_char(TestFunction check, ExceptionTest check_exception) {
+
+  // ***** Char type *****
+  // *** align-fill & width ***
+  check(SV("answer is '*     '"), SV("answer is '{:6}'"), CharT('*'));
+  check(SV("answer is '     *'"), SV("answer is '{:>6}'"), CharT('*'));
+  check(SV("answer is '*     '"), SV("answer is '{:<6}'"), CharT('*'));
+  check(SV("answer is '  *   '"), SV("answer is '{:^6}'"), CharT('*'));
+
+  check(SV("answer is '*     '"), SV("answer is '{:6c}'"), CharT('*'));
+  check(SV("answer is '     *'"), SV("answer is '{:>6c}'"), CharT('*'));
+  check(SV("answer is '*     '"), SV("answer is '{:<6c}'"), CharT('*'));
+  check(SV("answer is '  *   '"), SV("answer is '{:^6c}'"), CharT('*'));
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::::*'"), SV("answer is '{::>6}'"), CharT('*'));
+  check(SV("answer is '*:::::'"), SV("answer is '{::<6}'"), CharT('*'));
+  check(SV("answer is '::*:::'"), SV("answer is '{::^6}'"), CharT('*'));
+
+  check(SV("answer is '-----*'"), SV("answer is '{:->6c}'"), CharT('*'));
+  check(SV("answer is '*-----'"), SV("answer is '{:-<6c}'"), CharT('*'));
+  check(SV("answer is '--*---'"), SV("answer is '{:-^6c}'"), CharT('*'));
+
+  // *** Sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:-}"), CharT('*'));
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:+}"), CharT('*'));
+  check_exception("A sign field isn't allowed in this format-spec", SV("{: }"), CharT('*'));
+
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:-c}"), CharT('*'));
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:+c}"), CharT('*'));
+  check_exception("A sign field isn't allowed in this format-spec", SV("{: c}"), CharT('*'));
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{:#}"), CharT('*'));
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{:#c}"), CharT('*'));
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{:0}"), CharT('*'));
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{:0c}"), CharT('*'));
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), CharT('*'));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0}"), CharT('*'));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42}"), CharT('*'));
+
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.c}"), CharT('*'));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0c}"), CharT('*'));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42c}"), CharT('*'));
+
+  // *** locale-specific form ***
+  // Note it has no effect but it's allowed.
+  check(SV("answer is '*'"), SV("answer is '{:L}'"), '*');
+  check(SV("answer is '*'"), SV("answer is '{:Lc}'"), '*');
+
+  // *** type ***
+#if TEST_STD_VER > 20
+  const char* valid_types = "bBcdoxX?";
+#else
+  const char* valid_types = "bBcdoxX";
+#endif
+  for (const auto& fmt : invalid_types<CharT>(valid_types))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, CharT('*'));
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_char_as_integer(TestFunction check, ExceptionTest check_exception) {
+  // *** align-fill & width ***
+  check(SV("answer is '42'"), SV("answer is '{:<1d}'"), CharT('*'));
+
+  check(SV("answer is '42'"), SV("answer is '{:<2d}'"), CharT('*'));
+  check(SV("answer is '42 '"), SV("answer is '{:<3d}'"), CharT('*'));
+
+  check(SV("answer is '     42'"), SV("answer is '{:7d}'"), CharT('*'));
+  check(SV("answer is '     42'"), SV("answer is '{:>7d}'"), CharT('*'));
+  check(SV("answer is '42     '"), SV("answer is '{:<7d}'"), CharT('*'));
+  check(SV("answer is '  42   '"), SV("answer is '{:^7d}'"), CharT('*'));
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::::42'"), SV("answer is '{::>7d}'"), CharT('*'));
+  check(SV("answer is '42:::::'"), SV("answer is '{::<7d}'"), CharT('*'));
+  check(SV("answer is '::42:::'"), SV("answer is '{::^7d}'"), CharT('*'));
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '     42'"), SV("answer is '{:>07d}'"), CharT('*'));
+  check(SV("answer is '42     '"), SV("answer is '{:<07d}'"), CharT('*'));
+  check(SV("answer is '  42   '"), SV("answer is '{:^07d}'"), CharT('*'));
+
+  // *** Sign ***
+  check(SV("answer is 42"), SV("answer is {:d}"), CharT('*'));
+  check(SV("answer is 42"), SV("answer is {:-d}"), CharT('*'));
+  check(SV("answer is +42"), SV("answer is {:+d}"), CharT('*'));
+  check(SV("answer is  42"), SV("answer is {: d}"), CharT('*'));
+
+  // *** alternate form ***
+  check(SV("answer is +42"), SV("answer is {:+#d}"), CharT('*'));
+  check(SV("answer is +101010"), SV("answer is {:+b}"), CharT('*'));
+  check(SV("answer is +0b101010"), SV("answer is {:+#b}"), CharT('*'));
+  check(SV("answer is +0B101010"), SV("answer is {:+#B}"), CharT('*'));
+  check(SV("answer is +52"), SV("answer is {:+o}"), CharT('*'));
+  check(SV("answer is +052"), SV("answer is {:+#o}"), CharT('*'));
+  check(SV("answer is +2a"), SV("answer is {:+x}"), CharT('*'));
+  check(SV("answer is +0x2a"), SV("answer is {:+#x}"), CharT('*'));
+  check(SV("answer is +2A"), SV("answer is {:+X}"), CharT('*'));
+  check(SV("answer is +0X2A"), SV("answer is {:+#X}"), CharT('*'));
+
+  // *** zero-padding & width ***
+  check(SV("answer is +00000000042"), SV("answer is {:+#012d}"), CharT('*'));
+  check(SV("answer is +00000101010"), SV("answer is {:+012b}"), CharT('*'));
+  check(SV("answer is +0b000101010"), SV("answer is {:+#012b}"), CharT('*'));
+  check(SV("answer is +0B000101010"), SV("answer is {:+#012B}"), CharT('*'));
+  check(SV("answer is +00000000052"), SV("answer is {:+012o}"), CharT('*'));
+  check(SV("answer is +00000000052"), SV("answer is {:+#012o}"), CharT('*'));
+  check(SV("answer is +0000000002a"), SV("answer is {:+012x}"), CharT('*'));
+  check(SV("answer is +0x00000002a"), SV("answer is {:+#012x}"), CharT('*'));
+  check(SV("answer is +0000000002A"), SV("answer is {:+012X}"), CharT('*'));
+
+  check(SV("answer is +0X00000002A"), SV("answer is {:+#012X}"), CharT('*'));
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.d}"), CharT('*'));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.0d}"), CharT('*'));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.42d}"), CharT('*'));
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+
+  // *** type ***
+#if TEST_STD_VER > 20
+  const char* valid_types = "bBcdoxX?";
+#else
+  const char* valid_types = "bBcdoxX";
+#endif
+  for (const auto& fmt : invalid_types<CharT>(valid_types))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, '*');
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_hex_lower_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // Test whether the hexadecimal letters are the proper case.
+  // The precision is too large for float, so two tests are used.
+  check(SV("answer is '1.abcp+0'"), SV("answer is '{:a}'"), F(0x1.abcp+0));
+  check(SV("answer is '1.defp+0'"), SV("answer is '{:a}'"), F(0x1.defp+0));
+
+  // *** align-fill & width ***
+  check(SV("answer is '   1p-2'"), SV("answer is '{:7a}'"), F(0.25));
+  check(SV("answer is '   1p-2'"), SV("answer is '{:>7a}'"), F(0.25));
+  check(SV("answer is '1p-2   '"), SV("answer is '{:<7a}'"), F(0.25));
+  check(SV("answer is ' 1p-2  '"), SV("answer is '{:^7a}'"), F(0.25));
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::1p-3'"), SV("answer is '{::>7a}'"), F(125e-3));
+  check(SV("answer is '1p-3:::'"), SV("answer is '{::<7a}'"), F(125e-3));
+  check(SV("answer is ':1p-3::'"), SV("answer is '{::^7a}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6a}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6a}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6a}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6a}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7a}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7a}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7a}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   1p-2'"), SV("answer is '{:>07a}'"), F(0.25));
+  check(SV("answer is '1p-2   '"), SV("answer is '{:<07a}'"), F(0.25));
+  check(SV("answer is ' 1p-2  '"), SV("answer is '{:^07a}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0p+0'"), SV("answer is '{:a}'"), F(0));
+  check(SV("answer is '0p+0'"), SV("answer is '{:-a}'"), F(0));
+  check(SV("answer is '+0p+0'"), SV("answer is '{:+a}'"), F(0));
+  check(SV("answer is ' 0p+0'"), SV("answer is '{: a}'"), F(0));
+
+  check(SV("answer is '-0p+0'"), SV("answer is '{:a}'"), F(-0.));
+  check(SV("answer is '-0p+0'"), SV("answer is '{:-a}'"), F(-0.));
+  check(SV("answer is '-0p+0'"), SV("answer is '{:+a}'"), F(-0.));
+  check(SV("answer is '-0p+0'"), SV("answer is '{: a}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: a}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:a}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-a}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+a}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: a}'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:a}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-a}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+a}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: a}'"), nan_neg);
+
+  // *** alternate form ***
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0p+0'"), SV("answer is '{:a}'"), F(0));
+  check(SV("answer is '0.p+0'"), SV("answer is '{:#a}'"), F(0));
+
+  check(SV("answer is '1p+1'"), SV("answer is '{:.0a}'"), F(2.5));
+  check(SV("answer is '1.p+1'"), SV("answer is '{:#.0a}'"), F(2.5));
+  check(SV("answer is '1.4p+1'"), SV("answer is '{:#a}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#a}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#a}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '1p-5'"), SV("answer is '{:04a}'"), 0.03125);
+  check(SV("answer is '+1p-5'"), SV("answer is '{:+05a}'"), 0.03125);
+  check(SV("answer is '+01p-5'"), SV("answer is '{:+06a}'"), 0.03125);
+
+  check(SV("answer is '0001p-5'"), SV("answer is '{:07a}'"), 0.03125);
+  check(SV("answer is '0001p-5'"), SV("answer is '{:-07a}'"), 0.03125);
+  check(SV("answer is '+001p-5'"), SV("answer is '{:+07a}'"), 0.03125);
+  check(SV("answer is ' 001p-5'"), SV("answer is '{: 07a}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010a}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010a}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010a}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010a}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010a}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010a}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010a}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010a}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010a}'"), nan_neg);
+
+  // *** precision ***
+  // See format_test_floating_point_hex_lower_case_precision
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_hex_upper_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // Test whether the hexadecimal letters are the proper case.
+  // The precision is too large for float, so two tests are used.
+  check(SV("answer is '1.ABCP+0'"), SV("answer is '{:A}'"), F(0x1.abcp+0));
+  check(SV("answer is '1.DEFP+0'"), SV("answer is '{:A}'"), F(0x1.defp+0));
+
+  // *** align-fill & width ***
+  check(SV("answer is '   1P-2'"), SV("answer is '{:7A}'"), F(0.25));
+  check(SV("answer is '   1P-2'"), SV("answer is '{:>7A}'"), F(0.25));
+  check(SV("answer is '1P-2   '"), SV("answer is '{:<7A}'"), F(0.25));
+  check(SV("answer is ' 1P-2  '"), SV("answer is '{:^7A}'"), F(0.25));
+
+  check(SV("answer is '---1P-3'"), SV("answer is '{:->7A}'"), F(125e-3));
+  check(SV("answer is '1P-3---'"), SV("answer is '{:-<7A}'"), F(125e-3));
+  check(SV("answer is '-1P-3--'"), SV("answer is '{:-^7A}'"), F(125e-3));
+
+  check(SV("answer is '***INF'"), SV("answer is '{:*>6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF***'"), SV("answer is '{:*<6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*INF**'"), SV("answer is '{:*^6A}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-INF'"), SV("answer is '{:#>7A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF###'"), SV("answer is '{:#<7A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-INF##'"), SV("answer is '{:#^7A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^NAN'"), SV("answer is '{:^>6A}'"), nan_pos);
+  check(SV("answer is 'NAN^^^'"), SV("answer is '{:^<6A}'"), nan_pos);
+  check(SV("answer is '^NAN^^'"), SV("answer is '{:^^6A}'"), nan_pos);
+
+  check(SV("answer is '000-NAN'"), SV("answer is '{:0>7A}'"), nan_neg);
+  check(SV("answer is '-NAN000'"), SV("answer is '{:0<7A}'"), nan_neg);
+  check(SV("answer is '0-NAN00'"), SV("answer is '{:0^7A}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   1P-2'"), SV("answer is '{:>07A}'"), F(0.25));
+  check(SV("answer is '1P-2   '"), SV("answer is '{:<07A}'"), F(0.25));
+  check(SV("answer is ' 1P-2  '"), SV("answer is '{:^07A}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0P+0'"), SV("answer is '{:A}'"), F(0));
+  check(SV("answer is '0P+0'"), SV("answer is '{:-A}'"), F(0));
+  check(SV("answer is '+0P+0'"), SV("answer is '{:+A}'"), F(0));
+  check(SV("answer is ' 0P+0'"), SV("answer is '{: A}'"), F(0));
+
+  check(SV("answer is '-0P+0'"), SV("answer is '{:A}'"), F(-0.));
+  check(SV("answer is '-0P+0'"), SV("answer is '{:-A}'"), F(-0.));
+  check(SV("answer is '-0P+0'"), SV("answer is '{:+A}'"), F(-0.));
+  check(SV("answer is '-0P+0'"), SV("answer is '{: A}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'INF'"), SV("answer is '{:A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF'"), SV("answer is '{:-A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+INF'"), SV("answer is '{:+A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' INF'"), SV("answer is '{: A}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-INF'"), SV("answer is '{:A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:-A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:+A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{: A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:A}'"), nan_pos);
+  check(SV("answer is 'NAN'"), SV("answer is '{:-A}'"), nan_pos);
+  check(SV("answer is '+NAN'"), SV("answer is '{:+A}'"), nan_pos);
+  check(SV("answer is ' NAN'"), SV("answer is '{: A}'"), nan_pos);
+
+  check(SV("answer is '-NAN'"), SV("answer is '{:A}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:-A}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:+A}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{: A}'"), nan_neg);
+
+  // *** alternate form ***
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0P+0'"), SV("answer is '{:A}'"), F(0));
+  check(SV("answer is '0.P+0'"), SV("answer is '{:#A}'"), F(0));
+
+  check(SV("answer is '1P+1'"), SV("answer is '{:.0A}'"), F(2.5));
+  check(SV("answer is '1.P+1'"), SV("answer is '{:#.0A}'"), F(2.5));
+  check(SV("answer is '1.4P+1'"), SV("answer is '{:#A}'"), F(2.5));
+
+  check(SV("answer is 'INF'"), SV("answer is '{:#A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:#A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:#A}'"), nan_pos);
+  check(SV("answer is '-NAN'"), SV("answer is '{:#A}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '1P-5'"), SV("answer is '{:04A}'"), 0.03125);
+  check(SV("answer is '+1P-5'"), SV("answer is '{:+05A}'"), 0.03125);
+  check(SV("answer is '+01P-5'"), SV("answer is '{:+06A}'"), 0.03125);
+
+  check(SV("answer is '0001P-5'"), SV("answer is '{:07A}'"), 0.03125);
+  check(SV("answer is '0001P-5'"), SV("answer is '{:-07A}'"), 0.03125);
+  check(SV("answer is '+001P-5'"), SV("answer is '{:+07A}'"), 0.03125);
+  check(SV("answer is ' 001P-5'"), SV("answer is '{: 07A}'"), 0.03125);
+
+  check(SV("answer is '       INF'"), SV("answer is '{:010A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{:-010A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +INF'"), SV("answer is '{:+010A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{: 010A}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -INF'"), SV("answer is '{:010A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:-010A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:+010A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{: 010A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       NAN'"), SV("answer is '{:010A}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{:-010A}'"), nan_pos);
+  check(SV("answer is '      +NAN'"), SV("answer is '{:+010A}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{: 010A}'"), nan_pos);
+
+  check(SV("answer is '      -NAN'"), SV("answer is '{:010A}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:-010A}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:+010A}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{: 010A}'"), nan_neg);
+
+  // *** precision ***
+  // See format_test_floating_point_hex_upper_case_precision
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_hex_lower_case_precision(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   1.000000p-2'"), SV("answer is '{:14.6a}'"), F(0.25));
+  check(SV("answer is '   1.000000p-2'"), SV("answer is '{:>14.6a}'"), F(0.25));
+  check(SV("answer is '1.000000p-2   '"), SV("answer is '{:<14.6a}'"), F(0.25));
+  check(SV("answer is ' 1.000000p-2  '"), SV("answer is '{:^14.6a}'"), F(0.25));
+
+  check(SV("answer is '---1.000000p-3'"), SV("answer is '{:->14.6a}'"), F(125e-3));
+  check(SV("answer is '1.000000p-3---'"), SV("answer is '{:-<14.6a}'"), F(125e-3));
+  check(SV("answer is '-1.000000p-3--'"), SV("answer is '{:-^14.6a}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6.6a}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7.6a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6.6a}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6.6a}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6.6a}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7.6a}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7.6a}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7.6a}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   1.000000p-2'"), SV("answer is '{:>014.6a}'"), F(0.25));
+  check(SV("answer is '1.000000p-2   '"), SV("answer is '{:<014.6a}'"), F(0.25));
+  check(SV("answer is ' 1.000000p-2  '"), SV("answer is '{:^014.6a}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0.000000p+0'"), SV("answer is '{:.6a}'"), F(0));
+  check(SV("answer is '0.000000p+0'"), SV("answer is '{:-.6a}'"), F(0));
+  check(SV("answer is '+0.000000p+0'"), SV("answer is '{:+.6a}'"), F(0));
+  check(SV("answer is ' 0.000000p+0'"), SV("answer is '{: .6a}'"), F(0));
+
+  check(SV("answer is '-0.000000p+0'"), SV("answer is '{:.6a}'"), F(-0.));
+  check(SV("answer is '-0.000000p+0'"), SV("answer is '{:-.6a}'"), F(-0.));
+  check(SV("answer is '-0.000000p+0'"), SV("answer is '{:+.6a}'"), F(-0.));
+  check(SV("answer is '-0.000000p+0'"), SV("answer is '{: .6a}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: .6a}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: .6a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:.6a}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-.6a}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+.6a}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: .6a}'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:.6a}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-.6a}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+.6a}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: .6a}'"), nan_neg);
+
+  // *** alternate form ***
+  check(SV("answer is '1.400000p+1'"), SV("answer is '{:#.6a}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#.6a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#.6a}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#.6a}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '1.000000p-5'"), SV("answer is '{:011.6a}'"), 0.03125);
+  check(SV("answer is '+1.000000p-5'"), SV("answer is '{:+012.6a}'"), 0.03125);
+  check(SV("answer is '+01.000000p-5'"), SV("answer is '{:+013.6a}'"), 0.03125);
+
+  check(SV("answer is '0001.000000p-5'"), SV("answer is '{:014.6a}'"), 0.03125);
+  check(SV("answer is '0001.000000p-5'"), SV("answer is '{:-014.6a}'"), 0.03125);
+  check(SV("answer is '+001.000000p-5'"), SV("answer is '{:+014.6a}'"), 0.03125);
+  check(SV("answer is ' 001.000000p-5'"), SV("answer is '{: 014.6a}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010.6a}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010.6a}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010.6a}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010.6a}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010.6a}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010.6a}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010.6a}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010.6a}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010.6a}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010.6a}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010.6a}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010.6a}'"), nan_neg);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_hex_upper_case_precision(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   1.000000P-2'"), SV("answer is '{:14.6A}'"), F(0.25));
+  check(SV("answer is '   1.000000P-2'"), SV("answer is '{:>14.6A}'"), F(0.25));
+  check(SV("answer is '1.000000P-2   '"), SV("answer is '{:<14.6A}'"), F(0.25));
+  check(SV("answer is ' 1.000000P-2  '"), SV("answer is '{:^14.6A}'"), F(0.25));
+
+  check(SV("answer is '---1.000000P-3'"), SV("answer is '{:->14.6A}'"), F(125e-3));
+  check(SV("answer is '1.000000P-3---'"), SV("answer is '{:-<14.6A}'"), F(125e-3));
+  check(SV("answer is '-1.000000P-3--'"), SV("answer is '{:-^14.6A}'"), F(125e-3));
+
+  check(SV("answer is '***INF'"), SV("answer is '{:*>6.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF***'"), SV("answer is '{:*<6.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*INF**'"), SV("answer is '{:*^6.6A}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-INF'"), SV("answer is '{:#>7.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF###'"), SV("answer is '{:#<7.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-INF##'"), SV("answer is '{:#^7.6A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^NAN'"), SV("answer is '{:^>6.6A}'"), nan_pos);
+  check(SV("answer is 'NAN^^^'"), SV("answer is '{:^<6.6A}'"), nan_pos);
+  check(SV("answer is '^NAN^^'"), SV("answer is '{:^^6.6A}'"), nan_pos);
+
+  check(SV("answer is '000-NAN'"), SV("answer is '{:0>7.6A}'"), nan_neg);
+  check(SV("answer is '-NAN000'"), SV("answer is '{:0<7.6A}'"), nan_neg);
+  check(SV("answer is '0-NAN00'"), SV("answer is '{:0^7.6A}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   1.000000P-2'"), SV("answer is '{:>014.6A}'"), F(0.25));
+  check(SV("answer is '1.000000P-2   '"), SV("answer is '{:<014.6A}'"), F(0.25));
+  check(SV("answer is ' 1.000000P-2  '"), SV("answer is '{:^014.6A}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0.000000P+0'"), SV("answer is '{:.6A}'"), F(0));
+  check(SV("answer is '0.000000P+0'"), SV("answer is '{:-.6A}'"), F(0));
+  check(SV("answer is '+0.000000P+0'"), SV("answer is '{:+.6A}'"), F(0));
+  check(SV("answer is ' 0.000000P+0'"), SV("answer is '{: .6A}'"), F(0));
+
+  check(SV("answer is '-0.000000P+0'"), SV("answer is '{:.6A}'"), F(-0.));
+  check(SV("answer is '-0.000000P+0'"), SV("answer is '{:-.6A}'"), F(-0.));
+  check(SV("answer is '-0.000000P+0'"), SV("answer is '{:+.6A}'"), F(-0.));
+  check(SV("answer is '-0.000000P+0'"), SV("answer is '{: .6A}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'INF'"), SV("answer is '{:.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF'"), SV("answer is '{:-.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+INF'"), SV("answer is '{:+.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' INF'"), SV("answer is '{: .6A}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-INF'"), SV("answer is '{:.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:-.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:+.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{: .6A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:.6A}'"), nan_pos);
+  check(SV("answer is 'NAN'"), SV("answer is '{:-.6A}'"), nan_pos);
+  check(SV("answer is '+NAN'"), SV("answer is '{:+.6A}'"), nan_pos);
+  check(SV("answer is ' NAN'"), SV("answer is '{: .6A}'"), nan_pos);
+
+  check(SV("answer is '-NAN'"), SV("answer is '{:.6A}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:-.6A}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:+.6A}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{: .6A}'"), nan_neg);
+
+  // *** alternate form ***
+  check(SV("answer is '1.400000P+1'"), SV("answer is '{:#.6A}'"), F(2.5));
+
+  check(SV("answer is 'INF'"), SV("answer is '{:#.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:#.6A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:#.6A}'"), nan_pos);
+  check(SV("answer is '-NAN'"), SV("answer is '{:#.6A}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '1.000000P-5'"), SV("answer is '{:011.6A}'"), 0.03125);
+  check(SV("answer is '+1.000000P-5'"), SV("answer is '{:+012.6A}'"), 0.03125);
+  check(SV("answer is '+01.000000P-5'"), SV("answer is '{:+013.6A}'"), 0.03125);
+
+  check(SV("answer is '0001.000000P-5'"), SV("answer is '{:014.6A}'"), 0.03125);
+  check(SV("answer is '0001.000000P-5'"), SV("answer is '{:-014.6A}'"), 0.03125);
+  check(SV("answer is '+001.000000P-5'"), SV("answer is '{:+014.6A}'"), 0.03125);
+  check(SV("answer is ' 001.000000P-5'"), SV("answer is '{: 014.6A}'"), 0.03125);
+
+  check(SV("answer is '       INF'"), SV("answer is '{:010.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{:-010.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +INF'"), SV("answer is '{:+010.6A}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{: 010.6A}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -INF'"), SV("answer is '{:010.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:-010.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:+010.6A}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{: 010.6A}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       NAN'"), SV("answer is '{:010.6A}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{:-010.6A}'"), nan_pos);
+  check(SV("answer is '      +NAN'"), SV("answer is '{:+010.6A}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{: 010.6A}'"), nan_pos);
+
+  check(SV("answer is '      -NAN'"), SV("answer is '{:010.6A}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:-010.6A}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:+010.6A}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{: 010.6A}'"), nan_neg);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_scientific_lower_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   2.500000e-01'"), SV("answer is '{:15e}'"), F(0.25));
+  check(SV("answer is '   2.500000e-01'"), SV("answer is '{:>15e}'"), F(0.25));
+  check(SV("answer is '2.500000e-01   '"), SV("answer is '{:<15e}'"), F(0.25));
+  check(SV("answer is ' 2.500000e-01  '"), SV("answer is '{:^15e}'"), F(0.25));
+
+  check(SV("answer is '---1.250000e-01'"), SV("answer is '{:->15e}'"), F(125e-3));
+  check(SV("answer is '1.250000e-01---'"), SV("answer is '{:-<15e}'"), F(125e-3));
+  check(SV("answer is '-1.250000e-01--'"), SV("answer is '{:-^15e}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6e}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7e}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6e}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6e}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6e}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7e}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7e}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7e}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   2.500000e-01'"), SV("answer is '{:>015e}'"), F(0.25));
+  check(SV("answer is '2.500000e-01   '"), SV("answer is '{:<015e}'"), F(0.25));
+  check(SV("answer is ' 2.500000e-01  '"), SV("answer is '{:^015e}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0.000000e+00'"), SV("answer is '{:e}'"), F(0));
+  check(SV("answer is '0.000000e+00'"), SV("answer is '{:-e}'"), F(0));
+  check(SV("answer is '+0.000000e+00'"), SV("answer is '{:+e}'"), F(0));
+  check(SV("answer is ' 0.000000e+00'"), SV("answer is '{: e}'"), F(0));
+
+  check(SV("answer is '-0.000000e+00'"), SV("answer is '{:e}'"), F(-0.));
+  check(SV("answer is '-0.000000e+00'"), SV("answer is '{:-e}'"), F(-0.));
+  check(SV("answer is '-0.000000e+00'"), SV("answer is '{:+e}'"), F(-0.));
+  check(SV("answer is '-0.000000e+00'"), SV("answer is '{: e}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: e}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: e}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:e}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-e}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+e}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: e}'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:e}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-e}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+e}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: e}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0e+00'"), SV("answer is '{:.0e}'"), F(0));
+  check(SV("answer is '0.e+00'"), SV("answer is '{:#.0e}'"), F(0));
+
+  check(SV("answer is '0.000000e+00'"), SV("answer is '{:#e}'"), F(0));
+  check(SV("answer is '2.500000e+00'"), SV("answer is '{:#e}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#e}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#e}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#e}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '3.125000e-02'"), SV("answer is '{:07e}'"), 0.03125);
+  check(SV("answer is '+3.125000e-02'"), SV("answer is '{:+07e}'"), 0.03125);
+  check(SV("answer is '+3.125000e-02'"), SV("answer is '{:+08e}'"), 0.03125);
+  check(SV("answer is '+3.125000e-02'"), SV("answer is '{:+09e}'"), 0.03125);
+
+  check(SV("answer is '003.125000e-02'"), SV("answer is '{:014e}'"), 0.03125);
+  check(SV("answer is '003.125000e-02'"), SV("answer is '{:-014e}'"), 0.03125);
+  check(SV("answer is '+03.125000e-02'"), SV("answer is '{:+014e}'"), 0.03125);
+  check(SV("answer is ' 03.125000e-02'"), SV("answer is '{: 014e}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010e}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010e}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010e}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010e}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010e}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010e}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010e}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010e}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010e}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010e}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010e}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010e}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '3e-02'"), SV("answer is '{:.0e}'"), 0.03125);
+  check(SV("answer is '3.1e-02'"), SV("answer is '{:.1e}'"), 0.03125);
+  check(SV("answer is '3.125e-02'"), SV("answer is '{:.3e}'"), 0.03125);
+  check(SV("answer is '3.1250000000e-02'"), SV("answer is '{:.10e}'"), 0.03125);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_scientific_upper_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   2.500000E-01'"), SV("answer is '{:15E}'"), F(0.25));
+  check(SV("answer is '   2.500000E-01'"), SV("answer is '{:>15E}'"), F(0.25));
+  check(SV("answer is '2.500000E-01   '"), SV("answer is '{:<15E}'"), F(0.25));
+  check(SV("answer is ' 2.500000E-01  '"), SV("answer is '{:^15E}'"), F(0.25));
+
+  check(SV("answer is '---1.250000E-01'"), SV("answer is '{:->15E}'"), F(125e-3));
+  check(SV("answer is '1.250000E-01---'"), SV("answer is '{:-<15E}'"), F(125e-3));
+  check(SV("answer is '-1.250000E-01--'"), SV("answer is '{:-^15E}'"), F(125e-3));
+
+  check(SV("answer is '***INF'"), SV("answer is '{:*>6E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF***'"), SV("answer is '{:*<6E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*INF**'"), SV("answer is '{:*^6E}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-INF'"), SV("answer is '{:#>7E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF###'"), SV("answer is '{:#<7E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-INF##'"), SV("answer is '{:#^7E}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^NAN'"), SV("answer is '{:^>6E}'"), nan_pos);
+  check(SV("answer is 'NAN^^^'"), SV("answer is '{:^<6E}'"), nan_pos);
+  check(SV("answer is '^NAN^^'"), SV("answer is '{:^^6E}'"), nan_pos);
+
+  check(SV("answer is '000-NAN'"), SV("answer is '{:0>7E}'"), nan_neg);
+  check(SV("answer is '-NAN000'"), SV("answer is '{:0<7E}'"), nan_neg);
+  check(SV("answer is '0-NAN00'"), SV("answer is '{:0^7E}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   2.500000E-01'"), SV("answer is '{:>015E}'"), F(0.25));
+  check(SV("answer is '2.500000E-01   '"), SV("answer is '{:<015E}'"), F(0.25));
+  check(SV("answer is ' 2.500000E-01  '"), SV("answer is '{:^015E}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0.000000E+00'"), SV("answer is '{:E}'"), F(0));
+  check(SV("answer is '0.000000E+00'"), SV("answer is '{:-E}'"), F(0));
+  check(SV("answer is '+0.000000E+00'"), SV("answer is '{:+E}'"), F(0));
+  check(SV("answer is ' 0.000000E+00'"), SV("answer is '{: E}'"), F(0));
+
+  check(SV("answer is '-0.000000E+00'"), SV("answer is '{:E}'"), F(-0.));
+  check(SV("answer is '-0.000000E+00'"), SV("answer is '{:-E}'"), F(-0.));
+  check(SV("answer is '-0.000000E+00'"), SV("answer is '{:+E}'"), F(-0.));
+  check(SV("answer is '-0.000000E+00'"), SV("answer is '{: E}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'INF'"), SV("answer is '{:E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF'"), SV("answer is '{:-E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+INF'"), SV("answer is '{:+E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' INF'"), SV("answer is '{: E}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-INF'"), SV("answer is '{:E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:-E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:+E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{: E}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:E}'"), nan_pos);
+  check(SV("answer is 'NAN'"), SV("answer is '{:-E}'"), nan_pos);
+  check(SV("answer is '+NAN'"), SV("answer is '{:+E}'"), nan_pos);
+  check(SV("answer is ' NAN'"), SV("answer is '{: E}'"), nan_pos);
+
+  check(SV("answer is '-NAN'"), SV("answer is '{:E}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:-E}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:+E}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{: E}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0E+00'"), SV("answer is '{:.0E}'"), F(0));
+  check(SV("answer is '0.E+00'"), SV("answer is '{:#.0E}'"), F(0));
+
+  check(SV("answer is '0.000000E+00'"), SV("answer is '{:#E}'"), F(0));
+  check(SV("answer is '2.500000E+00'"), SV("answer is '{:#E}'"), F(2.5));
+
+  check(SV("answer is 'INF'"), SV("answer is '{:#E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:#E}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:#E}'"), nan_pos);
+  check(SV("answer is '-NAN'"), SV("answer is '{:#E}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '3.125000E-02'"), SV("answer is '{:07E}'"), 0.03125);
+  check(SV("answer is '+3.125000E-02'"), SV("answer is '{:+07E}'"), 0.03125);
+  check(SV("answer is '+3.125000E-02'"), SV("answer is '{:+08E}'"), 0.03125);
+  check(SV("answer is '+3.125000E-02'"), SV("answer is '{:+09E}'"), 0.03125);
+
+  check(SV("answer is '003.125000E-02'"), SV("answer is '{:014E}'"), 0.03125);
+  check(SV("answer is '003.125000E-02'"), SV("answer is '{:-014E}'"), 0.03125);
+  check(SV("answer is '+03.125000E-02'"), SV("answer is '{:+014E}'"), 0.03125);
+  check(SV("answer is ' 03.125000E-02'"), SV("answer is '{: 014E}'"), 0.03125);
+
+  check(SV("answer is '       INF'"), SV("answer is '{:010E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{:-010E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +INF'"), SV("answer is '{:+010E}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{: 010E}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -INF'"), SV("answer is '{:010E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:-010E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:+010E}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{: 010E}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       NAN'"), SV("answer is '{:010E}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{:-010E}'"), nan_pos);
+  check(SV("answer is '      +NAN'"), SV("answer is '{:+010E}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{: 010E}'"), nan_pos);
+
+  check(SV("answer is '      -NAN'"), SV("answer is '{:010E}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:-010E}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:+010E}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{: 010E}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '3E-02'"), SV("answer is '{:.0E}'"), 0.03125);
+  check(SV("answer is '3.1E-02'"), SV("answer is '{:.1E}'"), 0.03125);
+  check(SV("answer is '3.125E-02'"), SV("answer is '{:.3E}'"), 0.03125);
+  check(SV("answer is '3.1250000000E-02'"), SV("answer is '{:.10E}'"), 0.03125);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_fixed_lower_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   0.250000'"), SV("answer is '{:11f}'"), F(0.25));
+  check(SV("answer is '   0.250000'"), SV("answer is '{:>11f}'"), F(0.25));
+  check(SV("answer is '0.250000   '"), SV("answer is '{:<11f}'"), F(0.25));
+  check(SV("answer is ' 0.250000  '"), SV("answer is '{:^11f}'"), F(0.25));
+
+  check(SV("answer is '---0.125000'"), SV("answer is '{:->11f}'"), F(125e-3));
+  check(SV("answer is '0.125000---'"), SV("answer is '{:-<11f}'"), F(125e-3));
+  check(SV("answer is '-0.125000--'"), SV("answer is '{:-^11f}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6f}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7f}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6f}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6f}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6f}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7f}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7f}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7f}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   0.250000'"), SV("answer is '{:>011f}'"), F(0.25));
+  check(SV("answer is '0.250000   '"), SV("answer is '{:<011f}'"), F(0.25));
+  check(SV("answer is ' 0.250000  '"), SV("answer is '{:^011f}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0.000000'"), SV("answer is '{:f}'"), F(0));
+  check(SV("answer is '0.000000'"), SV("answer is '{:-f}'"), F(0));
+  check(SV("answer is '+0.000000'"), SV("answer is '{:+f}'"), F(0));
+  check(SV("answer is ' 0.000000'"), SV("answer is '{: f}'"), F(0));
+
+  check(SV("answer is '-0.000000'"), SV("answer is '{:f}'"), F(-0.));
+  check(SV("answer is '-0.000000'"), SV("answer is '{:-f}'"), F(-0.));
+  check(SV("answer is '-0.000000'"), SV("answer is '{:+f}'"), F(-0.));
+  check(SV("answer is '-0.000000'"), SV("answer is '{: f}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: f}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: f}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:f}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-f}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+f}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: f}'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:f}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-f}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+f}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: f}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0'"), SV("answer is '{:.0f}'"), F(0));
+  check(SV("answer is '0.'"), SV("answer is '{:#.0f}'"), F(0));
+
+  check(SV("answer is '0.000000'"), SV("answer is '{:#f}'"), F(0));
+  check(SV("answer is '2.500000'"), SV("answer is '{:#f}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#f}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#f}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#f}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '0.031250'"), SV("answer is '{:07f}'"), 0.03125);
+  check(SV("answer is '+0.031250'"), SV("answer is '{:+07f}'"), 0.03125);
+  check(SV("answer is '+0.031250'"), SV("answer is '{:+08f}'"), 0.03125);
+  check(SV("answer is '+0.031250'"), SV("answer is '{:+09f}'"), 0.03125);
+
+  check(SV("answer is '000.031250'"), SV("answer is '{:010f}'"), 0.03125);
+  check(SV("answer is '000.031250'"), SV("answer is '{:-010f}'"), 0.03125);
+  check(SV("answer is '+00.031250'"), SV("answer is '{:+010f}'"), 0.03125);
+  check(SV("answer is ' 00.031250'"), SV("answer is '{: 010f}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010f}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010f}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010f}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010f}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010f}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010f}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010f}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010f}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010f}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010f}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010f}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010f}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '0'"), SV("answer is '{:.0f}'"), 0.03125);
+  check(SV("answer is '0.0'"), SV("answer is '{:.1f}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.5f}'"), 0.03125);
+  check(SV("answer is '0.0312500000'"), SV("answer is '{:.10f}'"), 0.03125);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_fixed_upper_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   0.250000'"), SV("answer is '{:11F}'"), F(0.25));
+  check(SV("answer is '   0.250000'"), SV("answer is '{:>11F}'"), F(0.25));
+  check(SV("answer is '0.250000   '"), SV("answer is '{:<11F}'"), F(0.25));
+  check(SV("answer is ' 0.250000  '"), SV("answer is '{:^11F}'"), F(0.25));
+
+  check(SV("answer is '---0.125000'"), SV("answer is '{:->11F}'"), F(125e-3));
+  check(SV("answer is '0.125000---'"), SV("answer is '{:-<11F}'"), F(125e-3));
+  check(SV("answer is '-0.125000--'"), SV("answer is '{:-^11F}'"), F(125e-3));
+
+  check(SV("answer is '***INF'"), SV("answer is '{:*>6F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF***'"), SV("answer is '{:*<6F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*INF**'"), SV("answer is '{:*^6F}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-INF'"), SV("answer is '{:#>7F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF###'"), SV("answer is '{:#<7F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-INF##'"), SV("answer is '{:#^7F}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^NAN'"), SV("answer is '{:^>6F}'"), nan_pos);
+  check(SV("answer is 'NAN^^^'"), SV("answer is '{:^<6F}'"), nan_pos);
+  check(SV("answer is '^NAN^^'"), SV("answer is '{:^^6F}'"), nan_pos);
+
+  check(SV("answer is '000-NAN'"), SV("answer is '{:0>7F}'"), nan_neg);
+  check(SV("answer is '-NAN000'"), SV("answer is '{:0<7F}'"), nan_neg);
+  check(SV("answer is '0-NAN00'"), SV("answer is '{:0^7F}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   0.250000'"), SV("answer is '{:>011F}'"), F(0.25));
+  check(SV("answer is '0.250000   '"), SV("answer is '{:<011F}'"), F(0.25));
+  check(SV("answer is ' 0.250000  '"), SV("answer is '{:^011F}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0.000000'"), SV("answer is '{:F}'"), F(0));
+  check(SV("answer is '0.000000'"), SV("answer is '{:-F}'"), F(0));
+  check(SV("answer is '+0.000000'"), SV("answer is '{:+F}'"), F(0));
+  check(SV("answer is ' 0.000000'"), SV("answer is '{: F}'"), F(0));
+
+  check(SV("answer is '-0.000000'"), SV("answer is '{:F}'"), F(-0.));
+  check(SV("answer is '-0.000000'"), SV("answer is '{:-F}'"), F(-0.));
+  check(SV("answer is '-0.000000'"), SV("answer is '{:+F}'"), F(-0.));
+  check(SV("answer is '-0.000000'"), SV("answer is '{: F}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'INF'"), SV("answer is '{:F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF'"), SV("answer is '{:-F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+INF'"), SV("answer is '{:+F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' INF'"), SV("answer is '{: F}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-INF'"), SV("answer is '{:F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:-F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:+F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{: F}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:F}'"), nan_pos);
+  check(SV("answer is 'NAN'"), SV("answer is '{:-F}'"), nan_pos);
+  check(SV("answer is '+NAN'"), SV("answer is '{:+F}'"), nan_pos);
+  check(SV("answer is ' NAN'"), SV("answer is '{: F}'"), nan_pos);
+
+  check(SV("answer is '-NAN'"), SV("answer is '{:F}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:-F}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:+F}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{: F}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0'"), SV("answer is '{:.0F}'"), F(0));
+  check(SV("answer is '0.'"), SV("answer is '{:#.0F}'"), F(0));
+
+  check(SV("answer is '0.000000'"), SV("answer is '{:#F}'"), F(0));
+  check(SV("answer is '2.500000'"), SV("answer is '{:#F}'"), F(2.5));
+
+  check(SV("answer is 'INF'"), SV("answer is '{:#F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:#F}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:#F}'"), nan_pos);
+  check(SV("answer is '-NAN'"), SV("answer is '{:#F}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '0.031250'"), SV("answer is '{:07F}'"), 0.03125);
+  check(SV("answer is '+0.031250'"), SV("answer is '{:+07F}'"), 0.03125);
+  check(SV("answer is '+0.031250'"), SV("answer is '{:+08F}'"), 0.03125);
+  check(SV("answer is '+0.031250'"), SV("answer is '{:+09F}'"), 0.03125);
+
+  check(SV("answer is '000.031250'"), SV("answer is '{:010F}'"), 0.03125);
+  check(SV("answer is '000.031250'"), SV("answer is '{:-010F}'"), 0.03125);
+  check(SV("answer is '+00.031250'"), SV("answer is '{:+010F}'"), 0.03125);
+  check(SV("answer is ' 00.031250'"), SV("answer is '{: 010F}'"), 0.03125);
+
+  check(SV("answer is '       INF'"), SV("answer is '{:010F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{:-010F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +INF'"), SV("answer is '{:+010F}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{: 010F}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -INF'"), SV("answer is '{:010F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:-010F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:+010F}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{: 010F}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       NAN'"), SV("answer is '{:010F}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{:-010F}'"), nan_pos);
+  check(SV("answer is '      +NAN'"), SV("answer is '{:+010F}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{: 010F}'"), nan_pos);
+
+  check(SV("answer is '      -NAN'"), SV("answer is '{:010F}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:-010F}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:+010F}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{: 010F}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '0'"), SV("answer is '{:.0F}'"), 0.03125);
+  check(SV("answer is '0.0'"), SV("answer is '{:.1F}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.5F}'"), 0.03125);
+  check(SV("answer is '0.0312500000'"), SV("answer is '{:.10F}'"), 0.03125);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_general_lower_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   0.25'"), SV("answer is '{:7g}'"), F(0.25));
+  check(SV("answer is '   0.25'"), SV("answer is '{:>7g}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<7g}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^7g}'"), F(0.25));
+
+  check(SV("answer is '---0.125'"), SV("answer is '{:->8g}'"), F(125e-3));
+  check(SV("answer is '0.125---'"), SV("answer is '{:-<8g}'"), F(125e-3));
+  check(SV("answer is '-0.125--'"), SV("answer is '{:-^8g}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6g}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7g}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6g}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6g}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6g}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7g}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7g}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7g}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   0.25'"), SV("answer is '{:>07g}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<07g}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^07g}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0'"), SV("answer is '{:g}'"), F(0));
+  check(SV("answer is '0'"), SV("answer is '{:-g}'"), F(0));
+  check(SV("answer is '+0'"), SV("answer is '{:+g}'"), F(0));
+  check(SV("answer is ' 0'"), SV("answer is '{: g}'"), F(0));
+
+  check(SV("answer is '-0'"), SV("answer is '{:g}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:-g}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:+g}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{: g}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: g}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: g}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:g}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-g}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+g}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: g}'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:g}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-g}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+g}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: g}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0'"), SV("answer is '{:.0g}'"), F(0));
+  check(SV("answer is '0.'"), SV("answer is '{:#.0g}'"), F(0));
+
+  check(SV("answer is '0.00000'"), SV("answer is '{:#g}'"), F(0));
+  check(SV("answer is '2.50000'"), SV("answer is '{:#g}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#g}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#g}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#g}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '0.03125'"), SV("answer is '{:06g}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+06g}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+07g}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+08g}'"), 0.03125);
+
+  check(SV("answer is '000.03125'"), SV("answer is '{:09g}'"), 0.03125);
+  check(SV("answer is '000.03125'"), SV("answer is '{:-09g}'"), 0.03125);
+  check(SV("answer is '+00.03125'"), SV("answer is '{:+09g}'"), 0.03125);
+  check(SV("answer is ' 00.03125'"), SV("answer is '{: 09g}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010g}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010g}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010g}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010g}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010g}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010g}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010g}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010g}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010g}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010g}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010g}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010g}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '0.03'"), SV("answer is '{:.0g}'"), 0.03125);
+  check(SV("answer is '0.03'"), SV("answer is '{:.1g}'"), 0.03125);
+  check(SV("answer is '0.031'"), SV("answer is '{:.2g}'"), 0.03125);
+  check(SV("answer is '0.0312'"), SV("answer is '{:.3g}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.4g}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.5g}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.10g}'"), 0.03125);
+
+  // *** precision & alternate form ***
+
+  // Output validated with  printf("%#xg")
+  check(SV("answer is '1.'"), SV("answer is '{:#.{}g}'"), 1.2, 0);
+  check(SV("answer is '1.'"), SV("answer is '{:#.{}g}'"), 1.2, 1);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}g}'"), 1.2, 2);
+  check(SV("answer is '1.20'"), SV("answer is '{:#.{}g}'"), 1.2, 3);
+  check(SV("answer is '1.200'"), SV("answer is '{:#.{}g}'"), 1.2, 4);
+  check(SV("answer is '1.2000'"), SV("answer is '{:#.{}g}'"), 1.2, 5);
+  check(SV("answer is '1.20000'"), SV("answer is '{:#.{}g}'"), 1.2, 6);
+
+  check(SV("answer is '1.e+03'"), SV("answer is '{:#.{}g}'"), 1200.0, 0);
+  check(SV("answer is '1.e+03'"), SV("answer is '{:#.{}g}'"), 1200.0, 1);
+  check(SV("answer is '1.2e+03'"), SV("answer is '{:#.{}g}'"), 1200.0, 2);
+  check(SV("answer is '1.20e+03'"), SV("answer is '{:#.{}g}'"), 1200.0, 3);
+  check(SV("answer is '1200.'"), SV("answer is '{:#.{}g}'"), 1200.0, 4);
+  check(SV("answer is '1200.0'"), SV("answer is '{:#.{}g}'"), 1200.0, 5);
+  check(SV("answer is '1200.00'"), SV("answer is '{:#.{}g}'"), 1200.0, 6);
+
+  check(SV("answer is '1.e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 0);
+  check(SV("answer is '1.e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 1);
+  check(SV("answer is '1.2e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 2);
+  check(SV("answer is '1.20e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 3);
+  check(SV("answer is '1.200e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 4);
+  check(SV("answer is '1.2000e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 5);
+  check(SV("answer is '1.20000e+06'"), SV("answer is '{:#.{}g}'"), 1200000.0, 6);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_general_upper_case(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   0.25'"), SV("answer is '{:7G}'"), F(0.25));
+  check(SV("answer is '   0.25'"), SV("answer is '{:>7G}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<7G}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^7G}'"), F(0.25));
+
+  check(SV("answer is '---0.125'"), SV("answer is '{:->8G}'"), F(125e-3));
+  check(SV("answer is '0.125---'"), SV("answer is '{:-<8G}'"), F(125e-3));
+  check(SV("answer is '-0.125--'"), SV("answer is '{:-^8G}'"), F(125e-3));
+
+  check(SV("answer is '***INF'"), SV("answer is '{:*>6G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF***'"), SV("answer is '{:*<6G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*INF**'"), SV("answer is '{:*^6G}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-INF'"), SV("answer is '{:#>7G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF###'"), SV("answer is '{:#<7G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-INF##'"), SV("answer is '{:#^7G}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^NAN'"), SV("answer is '{:^>6G}'"), nan_pos);
+  check(SV("answer is 'NAN^^^'"), SV("answer is '{:^<6G}'"), nan_pos);
+  check(SV("answer is '^NAN^^'"), SV("answer is '{:^^6G}'"), nan_pos);
+
+  check(SV("answer is '000-NAN'"), SV("answer is '{:0>7G}'"), nan_neg);
+  check(SV("answer is '-NAN000'"), SV("answer is '{:0<7G}'"), nan_neg);
+  check(SV("answer is '0-NAN00'"), SV("answer is '{:0^7G}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   0.25'"), SV("answer is '{:>07G}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<07G}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^07G}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0'"), SV("answer is '{:G}'"), F(0));
+  check(SV("answer is '0'"), SV("answer is '{:-G}'"), F(0));
+  check(SV("answer is '+0'"), SV("answer is '{:+G}'"), F(0));
+  check(SV("answer is ' 0'"), SV("answer is '{: G}'"), F(0));
+
+  check(SV("answer is '-0'"), SV("answer is '{:G}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:-G}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:+G}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{: G}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'INF'"), SV("answer is '{:G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'INF'"), SV("answer is '{:-G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+INF'"), SV("answer is '{:+G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' INF'"), SV("answer is '{: G}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-INF'"), SV("answer is '{:G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:-G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:+G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{: G}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:G}'"), nan_pos);
+  check(SV("answer is 'NAN'"), SV("answer is '{:-G}'"), nan_pos);
+  check(SV("answer is '+NAN'"), SV("answer is '{:+G}'"), nan_pos);
+  check(SV("answer is ' NAN'"), SV("answer is '{: G}'"), nan_pos);
+
+  check(SV("answer is '-NAN'"), SV("answer is '{:G}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:-G}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{:+G}'"), nan_neg);
+  check(SV("answer is '-NAN'"), SV("answer is '{: G}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0'"), SV("answer is '{:.0G}'"), F(0));
+  check(SV("answer is '0.'"), SV("answer is '{:#.0G}'"), F(0));
+
+  check(SV("answer is '0.00000'"), SV("answer is '{:#G}'"), F(0));
+  check(SV("answer is '2.50000'"), SV("answer is '{:#G}'"), F(2.5));
+
+  check(SV("answer is 'INF'"), SV("answer is '{:#G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-INF'"), SV("answer is '{:#G}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'NAN'"), SV("answer is '{:#G}'"), nan_pos);
+  check(SV("answer is '-NAN'"), SV("answer is '{:#G}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '0.03125'"), SV("answer is '{:06G}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+06G}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+07G}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+08G}'"), 0.03125);
+
+  check(SV("answer is '000.03125'"), SV("answer is '{:09G}'"), 0.03125);
+  check(SV("answer is '000.03125'"), SV("answer is '{:-09G}'"), 0.03125);
+  check(SV("answer is '+00.03125'"), SV("answer is '{:+09G}'"), 0.03125);
+  check(SV("answer is ' 00.03125'"), SV("answer is '{: 09G}'"), 0.03125);
+
+  check(SV("answer is '       INF'"), SV("answer is '{:010G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{:-010G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +INF'"), SV("answer is '{:+010G}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       INF'"), SV("answer is '{: 010G}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -INF'"), SV("answer is '{:010G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:-010G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{:+010G}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -INF'"), SV("answer is '{: 010G}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       NAN'"), SV("answer is '{:010G}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{:-010G}'"), nan_pos);
+  check(SV("answer is '      +NAN'"), SV("answer is '{:+010G}'"), nan_pos);
+  check(SV("answer is '       NAN'"), SV("answer is '{: 010G}'"), nan_pos);
+
+  check(SV("answer is '      -NAN'"), SV("answer is '{:010G}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:-010G}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{:+010G}'"), nan_neg);
+  check(SV("answer is '      -NAN'"), SV("answer is '{: 010G}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '0.03'"), SV("answer is '{:.0G}'"), 0.03125);
+  check(SV("answer is '0.03'"), SV("answer is '{:.1G}'"), 0.03125);
+  check(SV("answer is '0.031'"), SV("answer is '{:.2G}'"), 0.03125);
+  check(SV("answer is '0.0312'"), SV("answer is '{:.3G}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.4G}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.5G}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.10G}'"), 0.03125);
+
+  // *** precision & alternate form ***
+
+  // Output validated with  printf("%#xg")
+  check(SV("answer is '1.'"), SV("answer is '{:#.{}G}'"), 1.2, 0);
+  check(SV("answer is '1.'"), SV("answer is '{:#.{}G}'"), 1.2, 1);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}G}'"), 1.2, 2);
+  check(SV("answer is '1.20'"), SV("answer is '{:#.{}G}'"), 1.2, 3);
+  check(SV("answer is '1.200'"), SV("answer is '{:#.{}G}'"), 1.2, 4);
+  check(SV("answer is '1.2000'"), SV("answer is '{:#.{}G}'"), 1.2, 5);
+  check(SV("answer is '1.20000'"), SV("answer is '{:#.{}G}'"), 1.2, 6);
+
+  check(SV("answer is '1.E+03'"), SV("answer is '{:#.{}G}'"), 1200.0, 0);
+  check(SV("answer is '1.E+03'"), SV("answer is '{:#.{}G}'"), 1200.0, 1);
+  check(SV("answer is '1.2E+03'"), SV("answer is '{:#.{}G}'"), 1200.0, 2);
+  check(SV("answer is '1.20E+03'"), SV("answer is '{:#.{}G}'"), 1200.0, 3);
+  check(SV("answer is '1200.'"), SV("answer is '{:#.{}G}'"), 1200.0, 4);
+  check(SV("answer is '1200.0'"), SV("answer is '{:#.{}G}'"), 1200.0, 5);
+  check(SV("answer is '1200.00'"), SV("answer is '{:#.{}G}'"), 1200.0, 6);
+
+  check(SV("answer is '1.E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 0);
+  check(SV("answer is '1.E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 1);
+  check(SV("answer is '1.2E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 2);
+  check(SV("answer is '1.20E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 3);
+  check(SV("answer is '1.200E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 4);
+  check(SV("answer is '1.2000E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 5);
+  check(SV("answer is '1.20000E+06'"), SV("answer is '{:#.{}G}'"), 1200000.0, 6);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_default(TestFunction check) {
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   0.25'"), SV("answer is '{:7}'"), F(0.25));
+  check(SV("answer is '   0.25'"), SV("answer is '{:>7}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<7}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^7}'"), F(0.25));
+
+  check(SV("answer is '---0.125'"), SV("answer is '{:->8}'"), F(125e-3));
+  check(SV("answer is '0.125---'"), SV("answer is '{:-<8}'"), F(125e-3));
+  check(SV("answer is '-0.125--'"), SV("answer is '{:-^8}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   0.25'"), SV("answer is '{:>07}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<07}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^07}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0'"), SV("answer is '{:}'"), F(0));
+  check(SV("answer is '0'"), SV("answer is '{:-}'"), F(0));
+  check(SV("answer is '+0'"), SV("answer is '{:+}'"), F(0));
+  check(SV("answer is ' 0'"), SV("answer is '{: }'"), F(0));
+
+  check(SV("answer is '-0'"), SV("answer is '{:}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:-}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:+}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{: }'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: }'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: }'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: }'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: }'"), nan_neg);
+
+  // *** alternate form ***
+  check(SV("answer is '0.'"), SV("answer is '{:#}'"), F(0));
+  check(SV("answer is '2.5'"), SV("answer is '{:#}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '0.03125'"), SV("answer is '{:07}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+07}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+08}'"), 0.03125);
+  check(SV("answer is '+00.03125'"), SV("answer is '{:+09}'"), 0.03125);
+
+  check(SV("answer is '0000.03125'"), SV("answer is '{:010}'"), 0.03125);
+  check(SV("answer is '0000.03125'"), SV("answer is '{:-010}'"), 0.03125);
+  check(SV("answer is '+000.03125'"), SV("answer is '{:+010}'"), 0.03125);
+  check(SV("answer is ' 000.03125'"), SV("answer is '{: 010}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010}'"), nan_neg);
+
+  // *** precision ***
+  // See format_test_floating_point_default_precision
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction>
+void format_test_floating_point_default_precision(TestFunction check) {
+
+  auto nan_pos = std::numeric_limits<F>::quiet_NaN();                          // "nan"
+  auto nan_neg = std::copysign(nan_pos, static_cast<decltype(nan_pos)>(-1.0)); // "-nan"
+
+  // *** align-fill & width ***
+  check(SV("answer is '   0.25'"), SV("answer is '{:7.6}'"), F(0.25));
+  check(SV("answer is '   0.25'"), SV("answer is '{:>7.6}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<7.6}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^7.6}'"), F(0.25));
+
+  check(SV("answer is '---0.125'"), SV("answer is '{:->8.6}'"), F(125e-3));
+  check(SV("answer is '0.125---'"), SV("answer is '{:-<8.6}'"), F(125e-3));
+  check(SV("answer is '-0.125--'"), SV("answer is '{:-^8.6}'"), F(125e-3));
+
+  check(SV("answer is '***inf'"), SV("answer is '{:*>6.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf***'"), SV("answer is '{:*<6.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '*inf**'"), SV("answer is '{:*^6.6}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '###-inf'"), SV("answer is '{:#>7.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf###'"), SV("answer is '{:#<7.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '#-inf##'"), SV("answer is '{:#^7.6}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '^^^nan'"), SV("answer is '{:^>6.6}'"), nan_pos);
+  check(SV("answer is 'nan^^^'"), SV("answer is '{:^<6.6}'"), nan_pos);
+  check(SV("answer is '^nan^^'"), SV("answer is '{:^^6.6}'"), nan_pos);
+
+  check(SV("answer is '000-nan'"), SV("answer is '{:0>7.6}'"), nan_neg);
+  check(SV("answer is '-nan000'"), SV("answer is '{:0<7.6}'"), nan_neg);
+  check(SV("answer is '0-nan00'"), SV("answer is '{:0^7.6}'"), nan_neg);
+
+  // Test whether zero padding is ignored
+  check(SV("answer is '   0.25'"), SV("answer is '{:>07.6}'"), F(0.25));
+  check(SV("answer is '0.25   '"), SV("answer is '{:<07.6}'"), F(0.25));
+  check(SV("answer is ' 0.25  '"), SV("answer is '{:^07.6}'"), F(0.25));
+
+  // *** Sign ***
+  check(SV("answer is '0'"), SV("answer is '{:.6}'"), F(0));
+  check(SV("answer is '0'"), SV("answer is '{:-.6}'"), F(0));
+  check(SV("answer is '+0'"), SV("answer is '{:+.6}'"), F(0));
+  check(SV("answer is ' 0'"), SV("answer is '{: .6}'"), F(0));
+
+  check(SV("answer is '-0'"), SV("answer is '{:.6}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:-.6}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{:+.6}'"), F(-0.));
+  check(SV("answer is '-0'"), SV("answer is '{: .6}'"), F(-0.));
+
+  // [format.string.std]/5 The sign option applies to floating-point infinity and NaN.
+  check(SV("answer is 'inf'"), SV("answer is '{:.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is 'inf'"), SV("answer is '{:-.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '+inf'"), SV("answer is '{:+.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is ' inf'"), SV("answer is '{: .6}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '-inf'"), SV("answer is '{:.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:-.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:+.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{: .6}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:.6}'"), nan_pos);
+  check(SV("answer is 'nan'"), SV("answer is '{:-.6}'"), nan_pos);
+  check(SV("answer is '+nan'"), SV("answer is '{:+.6}'"), nan_pos);
+  check(SV("answer is ' nan'"), SV("answer is '{: .6}'"), nan_pos);
+
+  check(SV("answer is '-nan'"), SV("answer is '{:.6}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:-.6}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{:+.6}'"), nan_neg);
+  check(SV("answer is '-nan'"), SV("answer is '{: .6}'"), nan_neg);
+
+  // *** alternate form **
+  // When precision is zero there's no decimal point except when the alternate form is specified.
+  check(SV("answer is '0'"), SV("answer is '{:.0}'"), F(0));
+  check(SV("answer is '0.'"), SV("answer is '{:#.0}'"), F(0));
+
+  check(SV("answer is '0.'"), SV("answer is '{:#.6}'"), F(0));
+  check(SV("answer is '2.5'"), SV("answer is '{:#.6}'"), F(2.5));
+
+  check(SV("answer is 'inf'"), SV("answer is '{:#.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '-inf'"), SV("answer is '{:#.6}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is 'nan'"), SV("answer is '{:#.6}'"), nan_pos);
+  check(SV("answer is '-nan'"), SV("answer is '{:#.6}'"), nan_neg);
+
+  // *** zero-padding & width ***
+  check(SV("answer is '0.03125'"), SV("answer is '{:06.6}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+06.6}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+07.6}'"), 0.03125);
+  check(SV("answer is '+0.03125'"), SV("answer is '{:+08.6}'"), 0.03125);
+
+  check(SV("answer is '000.03125'"), SV("answer is '{:09.6}'"), 0.03125);
+  check(SV("answer is '000.03125'"), SV("answer is '{:-09.6}'"), 0.03125);
+  check(SV("answer is '+00.03125'"), SV("answer is '{:+09.6}'"), 0.03125);
+  check(SV("answer is ' 00.03125'"), SV("answer is '{: 09.6}'"), 0.03125);
+
+  check(SV("answer is '       inf'"), SV("answer is '{:010.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{:-010.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '      +inf'"), SV("answer is '{:+010.6}'"), std::numeric_limits<F>::infinity());
+  check(SV("answer is '       inf'"), SV("answer is '{: 010.6}'"), std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '      -inf'"), SV("answer is '{:010.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:-010.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{:+010.6}'"), -std::numeric_limits<F>::infinity());
+  check(SV("answer is '      -inf'"), SV("answer is '{: 010.6}'"), -std::numeric_limits<F>::infinity());
+
+  check(SV("answer is '       nan'"), SV("answer is '{:010.6}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{:-010.6}'"), nan_pos);
+  check(SV("answer is '      +nan'"), SV("answer is '{:+010.6}'"), nan_pos);
+  check(SV("answer is '       nan'"), SV("answer is '{: 010.6}'"), nan_pos);
+
+  check(SV("answer is '      -nan'"), SV("answer is '{:010.6}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:-010.6}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{:+010.6}'"), nan_neg);
+  check(SV("answer is '      -nan'"), SV("answer is '{: 010.6}'"), nan_neg);
+
+  // *** precision ***
+  check(SV("answer is '0.03'"), SV("answer is '{:.0}'"), 0.03125);
+  check(SV("answer is '0.03'"), SV("answer is '{:.1}'"), 0.03125);
+  check(SV("answer is '0.031'"), SV("answer is '{:.2}'"), 0.03125);
+  check(SV("answer is '0.0312'"), SV("answer is '{:.3}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.4}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.5}'"), 0.03125);
+  check(SV("answer is '0.03125'"), SV("answer is '{:.10}'"), 0.03125);
+
+  // *** precision & alternate form ***
+
+  check(SV("answer is '1.'"), SV("answer is '{:#.{}}'"), 1.2, 0);
+  check(SV("answer is '1.'"), SV("answer is '{:#.{}}'"), 1.2, 1);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}}'"), 1.2, 2);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}}'"), 1.2, 3);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}}'"), 1.2, 4);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}}'"), 1.2, 5);
+  check(SV("answer is '1.2'"), SV("answer is '{:#.{}}'"), 1.2, 6);
+
+  check(SV("answer is '1.e+03'"), SV("answer is '{:#.{}}'"), 1200.0, 0);
+  check(SV("answer is '1.e+03'"), SV("answer is '{:#.{}}'"), 1200.0, 1);
+  check(SV("answer is '1.2e+03'"), SV("answer is '{:#.{}}'"), 1200.0, 2);
+  check(SV("answer is '1.2e+03'"), SV("answer is '{:#.{}}'"), 1200.0, 3);
+  check(SV("answer is '1200.'"), SV("answer is '{:#.{}}'"), 1200.0, 4);
+  check(SV("answer is '1200.'"), SV("answer is '{:#.{}}'"), 1200.0, 5);
+  check(SV("answer is '1200.'"), SV("answer is '{:#.{}}'"), 1200.0, 6);
+
+  check(SV("answer is '1.e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 0);
+  check(SV("answer is '1.e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 1);
+  check(SV("answer is '1.2e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 2);
+  check(SV("answer is '1.2e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 3);
+  check(SV("answer is '1.2e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 4);
+  check(SV("answer is '1.2e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 5);
+  check(SV("answer is '1.2e+06'"), SV("answer is '{:#.{}}'"), 1200000.0, 6);
+
+  // *** locale-specific form ***
+  // See locale-specific_form.pass.cpp
+}
+
+template <class F, class CharT, class TestFunction, class ExceptionTest>
+void format_test_floating_point(TestFunction check, ExceptionTest check_exception) {
+  format_test_floating_point_hex_lower_case<F, CharT>(check);
+  format_test_floating_point_hex_upper_case<F, CharT>(check);
+  format_test_floating_point_hex_lower_case_precision<F, CharT>(check);
+  format_test_floating_point_hex_upper_case_precision<F, CharT>(check);
+
+  format_test_floating_point_scientific_lower_case<F, CharT>(check);
+  format_test_floating_point_scientific_upper_case<F, CharT>(check);
+
+  format_test_floating_point_fixed_lower_case<F, CharT>(check);
+  format_test_floating_point_fixed_upper_case<F, CharT>(check);
+
+  format_test_floating_point_general_lower_case<F, CharT>(check);
+  format_test_floating_point_general_upper_case<F, CharT>(check);
+
+  format_test_floating_point_default<F, CharT>(check);
+  format_test_floating_point_default_precision<F, CharT>(check);
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("aAeEfFgG"))
+    check_exception("The format-spec type has a type not supported for a floating-point argument", fmt, F(1));
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_floating_point(TestFunction check, ExceptionTest check_exception) {
+  format_test_floating_point<float, CharT>(check, check_exception);
+  format_test_floating_point<double, CharT>(check, check_exception);
+  format_test_floating_point<long double, CharT>(check, check_exception);
+}
+
+template <class P, class CharT, class TestFunction, class ExceptionTest>
+void format_test_pointer(TestFunction check, ExceptionTest check_exception) {
+  // *** align-fill & width ***
+  check(SV("answer is '   0x0'"), SV("answer is '{:6}'"), P(nullptr));
+  check(SV("answer is '   0x0'"), SV("answer is '{:>6}'"), P(nullptr));
+  check(SV("answer is '0x0   '"), SV("answer is '{:<6}'"), P(nullptr));
+  check(SV("answer is ' 0x0  '"), SV("answer is '{:^6}'"), P(nullptr));
+
+  // The fill character ':' is allowed here (P0645) but not in ranges (P2286).
+  check(SV("answer is ':::0x0'"), SV("answer is '{::>6}'"), P(nullptr));
+  check(SV("answer is '0x0:::'"), SV("answer is '{::<6}'"), P(nullptr));
+  check(SV("answer is ':0x0::'"), SV("answer is '{::^6}'"), P(nullptr));
+
+  // *** Sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), P(nullptr));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), P(nullptr));
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), P(nullptr));
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), P(nullptr));
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), P(nullptr));
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), P(nullptr));
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), P(nullptr));
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("p"))
+    check_exception("The format-spec type has a type not supported for a pointer argument", fmt, P(nullptr));
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_handle(TestFunction check, ExceptionTest check_exception) {
+  // *** Valid permuatations ***
+  check(SV("answer is '0xaaaa'"), SV("answer is '{}'"), status::foo);
+  check(SV("answer is '0xaaaa'"), SV("answer is '{:x}'"), status::foo);
+  check(SV("answer is '0XAAAA'"), SV("answer is '{:X}'"), status::foo);
+  check(SV("answer is 'foo'"), SV("answer is '{:s}'"), status::foo);
+
+  check(SV("answer is '0x5555'"), SV("answer is '{}'"), status::bar);
+  check(SV("answer is '0x5555'"), SV("answer is '{:x}'"), status::bar);
+  check(SV("answer is '0X5555'"), SV("answer is '{:X}'"), status::bar);
+  check(SV("answer is 'bar'"), SV("answer is '{:s}'"), status::bar);
+
+  check(SV("answer is '0xaa55'"), SV("answer is '{}'"), status::foobar);
+  check(SV("answer is '0xaa55'"), SV("answer is '{:x}'"), status::foobar);
+  check(SV("answer is '0XAA55'"), SV("answer is '{:X}'"), status::foobar);
+  check(SV("answer is 'foobar'"), SV("answer is '{:s}'"), status::foobar);
+
+  // P2418 Changed the argument from a const reference to a forwarding reference.
+  // This mainly affects handle classes, however since we use an abstraction
+  // layer here it's "tricky" to verify whether this test would do the "right"
+  // thing. So these tests are done separately.
+
+  // *** type ***
+  for (const auto& fmt : invalid_types<CharT>("xXs"))
+    check_exception("The format-spec type has a type not supported for a status argument", fmt, status::foo);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_test_pointer(TestFunction check, ExceptionTest check_exception) {
+  format_test_pointer<std::nullptr_t, CharT>(check, check_exception);
+  format_test_pointer<void*, CharT>(check, check_exception);
+  format_test_pointer<const void*, CharT>(check, check_exception);
+}
+
+/// Tests special buffer functions with a "large" input.
+///
+/// This is a test specific for libc++, however the code should behave the same
+/// on all implementations.
+/// In \c __format::__output_buffer there are some special functions to optimize
+/// outputting multiple characters, \c __copy, \c __transform, \c __fill. This
+/// test validates whether the functions behave properly when the output size
+/// doesn't fit in its internal buffer.
+template <class CharT, class TestFunction>
+void format_test_buffer_optimizations(TestFunction check) {
+#ifdef _LIBCPP_VERSION
+  // Used to validate our test sets are the proper size.
+  // To test the chunked operations it needs to be larger than the internal
+  // buffer. Picked a nice looking number.
+  constexpr int minimum = 3 * std::__format::__internal_storage<CharT>::__buffer_size;
+#else
+  constexpr int minimum = 1;
+#endif
+
+  // Copy
+  std::basic_string<CharT> str = STR(
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog."
+      "The quick brown fox jumps over the lazy dog.");
+  assert(str.size() > minimum);
+  check(std::basic_string_view<CharT>{str}, SV("{}"), str);
+
+  // Fill
+  std::basic_string<CharT> fill(minimum, CharT('*'));
+  check(std::basic_string_view<CharT>{str + fill}, SV("{:*<{}}"), str, str.size() + minimum);
+  check(std::basic_string_view<CharT>{fill + str + fill}, SV("{:*^{}}"), str, minimum + str.size() + minimum);
+  check(std::basic_string_view<CharT>{fill + str}, SV("{:*>{}}"), str, minimum + str.size());
+}
+
+template <class CharT, execution_modus modus, class TestFunction, class ExceptionTest>
+void format_tests(TestFunction check, ExceptionTest check_exception) {
+  // *** Test escaping  ***
+
+  check(SV("{"), SV("{{"));
+  check(SV("}"), SV("}}"));
+
+  // *** Test argument ID ***
+  check(SV("hello false true"), SV("hello {0:} {1:}"), false, true);
+  check(SV("hello true false"), SV("hello {1:} {0:}"), false, true);
+
+  // *** Test many arguments ***
+
+  // [format.args]/1
+  // An instance of basic_format_args provides access to formatting arguments.
+  // Implementations should optimize the representation of basic_format_args
+  // for a small number of formatting arguments.
+  //
+  // These's no guidances what "a small number of formatting arguments" is.
+  // - fmtlib uses a 15 elements
+  // - libc++ uses 12 elements
+  // - MSVC STL uses a different approach regardless of the number of arguments
+  // - libstdc++ has no implementation yet
+  // fmtlib and libc++ use a similar approach, this approach can support 16
+  // elements (based on design choices both support less elements). This test
+  // makes sure "the large number of formatting arguments" code path is tested.
+  check(
+      SV("1234567890\t1234567890"),
+      SV("{}{}{}{}{}{}{}{}{}{}\t{}{}{}{}{}{}{}{}{}{}"),
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9,
+      0,
+      1,
+      2,
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9,
+      0);
+
+  // ** Test invalid format strings ***
+  check_exception("The format string terminates at a '{'", SV("{"));
+  check_exception("The replacement field misses a terminating '}'", SV("{:"), 42);
+
+  check_exception("The format string contains an invalid escape sequence", SV("}"));
+  check_exception("The format string contains an invalid escape sequence", SV("{:}-}"), 42);
+
+  check_exception("The format string contains an invalid escape sequence", SV("} "));
+
+  check_exception("The arg-id of the format-spec starts with an invalid character", SV("{-"), 42);
+  check_exception("Argument index out of bounds", SV("hello {}"));
+  check_exception("Argument index out of bounds", SV("hello {0}"));
+  check_exception("Argument index out of bounds", SV("hello {1}"), 42);
+
+  // *** Test char format argument ***
+  // The `char` to `wchar_t` formatting is tested separately.
+  check(SV("hello 09azAZ!"),
+        SV("hello {}{}{}{}{}{}{}"),
+        CharT('0'),
+        CharT('9'),
+        CharT('a'),
+        CharT('z'),
+        CharT('A'),
+        CharT('Z'),
+        CharT('!'));
+  if constexpr (modus == execution_modus::full) {
+    format_test_char<CharT>(check, check_exception);
+    format_test_char_as_integer<CharT>(check, check_exception);
+  }
+
+  // *** Test string format argument ***
+  {
+    CharT buffer[] = {CharT('0'), CharT('9'), CharT('a'), CharT('z'), CharT('A'), CharT('Z'), CharT('!'), 0};
+    CharT* data = buffer;
+    check(SV("hello 09azAZ!"), SV("hello {}"), data);
+  }
+  {
+    CharT buffer[] = {CharT('0'), CharT('9'), CharT('a'), CharT('z'), CharT('A'), CharT('Z'), CharT('!'), 0};
+    const CharT* data = buffer;
+    check(SV("hello 09azAZ!"), SV("hello {}"), data);
+  }
+  {
+    std::basic_string<CharT> data = STR("world");
+    check(SV("hello world"), SV("hello {}"), data);
+  }
+  {
+    std::basic_string<CharT> buffer = STR("world");
+    std::basic_string_view<CharT> data = buffer;
+    check(SV("hello world"), SV("hello {}"), data);
+  }
+  if constexpr (modus == execution_modus::full)
+    format_string_tests<CharT>(check, check_exception);
+
+  // *** Test Boolean format argument ***
+  check(SV("hello false true"), SV("hello {} {}"), false, true);
+
+  if constexpr (modus == execution_modus::full) {
+    format_test_bool<CharT>(check, check_exception);
+    format_test_bool_as_integer<CharT>(check, check_exception);
+  }
+
+  // *** Test signed integral format argument ***
+  check(SV("hello 42"), SV("hello {}"), static_cast<signed char>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<short>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<int>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<long>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<long long>(42));
+#ifndef TEST_HAS_NO_INT128
+  check(SV("hello 42"), SV("hello {}"), static_cast<__int128_t>(42));
+#endif
+  if constexpr (modus == execution_modus::full)
+    format_test_signed_integer<CharT>(check, check_exception);
+
+  // ** Test unsigned integral format argument ***
+  check(SV("hello 42"), SV("hello {}"), static_cast<unsigned char>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<unsigned short>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<unsigned>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<unsigned long>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<unsigned long long>(42));
+#ifndef TEST_HAS_NO_INT128
+  check(SV("hello 42"), SV("hello {}"), static_cast<__uint128_t>(42));
+#endif
+  if constexpr (modus == execution_modus::full)
+    format_test_unsigned_integer<CharT>(check, check_exception);
+
+  // *** Test floating point format argument ***
+  check(SV("hello 42"), SV("hello {}"), static_cast<float>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<double>(42));
+  check(SV("hello 42"), SV("hello {}"), static_cast<long double>(42));
+  if constexpr (modus == execution_modus::full)
+    format_test_floating_point<CharT>(check, check_exception);
+
+  // *** Test pointer formater argument ***
+  check(SV("hello 0x0"), SV("hello {}"), nullptr);
+  check(SV("hello 0x42"), SV("hello {}"), reinterpret_cast<void*>(0x42));
+  check(SV("hello 0x42"), SV("hello {}"), reinterpret_cast<const void*>(0x42));
+  if constexpr (modus == execution_modus::full)
+    format_test_pointer<CharT>(check, check_exception);
+
+  // *** Test handle formatter argument ***
+  format_test_handle<CharT>(check, check_exception);
+
+  // *** Test the interal buffer optimizations ***
+  if constexpr (modus == execution_modus::full)
+    format_test_buffer_optimizations<CharT>(check);
+}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <class TestFunction>
+void format_tests_char_to_wchar_t(TestFunction check) {
+  using CharT = wchar_t;
+  check(SV("hello 09azA"), SV("hello {}{}{}{}{}"), '0', '9', 'a', 'z', 'A');
+}
+#endif
+
+#endif // TEST_STD_UTILITIES_FORMAT_FORMAT_FUNCTIONS_FORMAT_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.locale.pass.cpp
new file mode 100644
index 0000000..f497e2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.locale.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class Out, class... Args>
+//   Out format_to(Out out, const locale& loc,
+//                 format-string<Args...> fmt, const Args&... args);
+// template<class Out, class... Args>
+//   Out format_to(Out out, const locale& loc,
+//                 wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <algorithm>
+#include <cassert>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+#include "test_iterators.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      {
+        std::basic_string<CharT> out(expected.size(), CharT(' '));
+        auto it = std::format_to(out.begin(), std::locale(), fmt, std::forward<Args>(args)...);
+        assert(it == out.end());
+        assert(out == expected);
+      }
+      {
+        std::list<CharT> out;
+        std::format_to(std::back_inserter(out), std::locale(), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        std::vector<CharT> out;
+        std::format_to(std::back_inserter(out), std::locale(), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        assert(expected.size() < 4096 && "Update the size of the buffer.");
+        CharT out[4096];
+        cpp20_output_iterator<CharT*> it =
+            std::format_to(cpp20_output_iterator{out}, std::locale(), fmt, std::forward<Args>(args)...);
+        assert(std::distance(out, base(it)) == int(expected.size()));
+        // Convert to std::string since output contains '\0' for boolean tests.
+        assert(std::basic_string<CharT>(out, base(it)) == expected);
+      }
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format_to become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format_to.locale.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.locale.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.locale.verify.cpp
new file mode 100644
index 0000000..e399060
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.locale.verify.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class Out, class... Args>
+//   Out format_to(Out out, const locale& loc,
+//                 format-string<Args...> fmt, const Args&... args);
+// template<class Out, class... Args>
+//   Out format_to(Out out, const locale& loc,
+//                 wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <locale>
+
+#include "test_macros.h"
+
+extern char* out;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+extern wchar_t* wout;
+#endif
+
+// clang-format off
+
+void f() {
+  std::format_to(out, std::locale(), "{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, std::locale(), "{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format_to(wout, std::locale(), L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, std::locale(), L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.pass.cpp
new file mode 100644
index 0000000..90615f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class Out, class... Args>
+//   Out format_to(Out out, format-string<Args...> fmt, const Args&... args);
+// template<class Out, class... Args>
+//   Out format_to(Out out, wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <algorithm>
+#include <cassert>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+#include "test_iterators.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      {
+        std::basic_string<CharT> out(expected.size(), CharT(' '));
+        auto it = std::format_to(out.begin(), fmt, std::forward<Args>(args)...);
+        assert(it == out.end());
+        assert(out == expected);
+      }
+      {
+        std::list<CharT> out;
+        std::format_to(std::back_inserter(out), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        std::vector<CharT> out;
+        std::format_to(std::back_inserter(out), fmt, std::forward<Args>(args)...);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+      }
+      {
+        assert(expected.size() < 4096 && "Update the size of the buffer.");
+        CharT out[4096];
+        cpp20_output_iterator<CharT*> it = std::format_to(cpp20_output_iterator{out}, fmt, std::forward<Args>(args)...);
+        assert(std::distance(out, base(it)) == int(expected.size()));
+        // Convert to std::string since output contains '\0' for boolean tests.
+        assert(std::basic_string<CharT>(out, base(it)) == expected);
+      }
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.verify.cpp
new file mode 100644
index 0000000..a40b532
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to.verify.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// Basic test to validate ill-formed code is properly detected.
+
+// template<class Out, class... Args>
+//   Out format_to(Out out, format-string<Args...> fmt, const Args&... args);
+// template<class Out, class... Args>
+//   Out format_to(Out out, wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+
+#include "test_macros.h"
+
+extern char* out;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+extern wchar_t* wout;
+#endif
+
+// clang-format off
+
+void f() {
+  std::format_to(out, "{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(out, "{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format_to(wout, L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to(wout, L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.locale.pass.cpp
new file mode 100644
index 0000000..8a9a539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.locale.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       const locale& loc, format-string<Args...> fmt,
+//                                       const Args&... args);
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       const locale& loc, wformat-string<Args...> fmt,
+//                                       const Args&... args);
+
+#include <format>
+#include <algorithm>
+#include <cassert>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      {
+        std::list<CharT> out;
+        std::format_to_n_result result =
+            std::format_to_n(std::back_inserter(out), 0, std::locale(), fmt, std::forward<Args>(args)...);
+        // To avoid signedness warnings make sure formatted_size uses the same type
+        // as result.size.
+        using diff_type          = decltype(result.size);
+        diff_type formatted_size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+
+        assert(result.size == formatted_size);
+        assert(out.empty());
+      }
+      {
+        std::vector<CharT> out;
+        std::format_to_n_result result =
+            std::format_to_n(std::back_inserter(out), 5, std::locale(), fmt, std::forward<Args>(args)...);
+        using diff_type          = decltype(result.size);
+        diff_type formatted_size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+        diff_type size           = std::min<diff_type>(5, formatted_size);
+
+        assert(result.size == formatted_size);
+        assert(std::equal(out.begin(), out.end(), expected.begin(), expected.begin() + size));
+      }
+      {
+        std::basic_string<CharT> out;
+        std::format_to_n_result result =
+            std::format_to_n(std::back_inserter(out), 1000, std::locale(), fmt, std::forward<Args>(args)...);
+        using diff_type          = decltype(result.size);
+        diff_type formatted_size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+        diff_type size           = std::min<diff_type>(1000, formatted_size);
+
+        assert(result.size == formatted_size);
+        assert(out == expected.substr(0, size));
+      }
+      {
+        // Test the returned iterator.
+        std::basic_string<CharT> out(10, CharT(' '));
+        std::format_to_n_result result =
+            std::format_to_n(out.begin(), 10, std::locale(), fmt, std::forward<Args>(args)...);
+        using diff_type          = decltype(result.size);
+        diff_type formatted_size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+        diff_type size           = std::min<diff_type>(10, formatted_size);
+
+        assert(result.size == formatted_size);
+        assert(result.out == out.begin() + size);
+        assert(out.substr(0, size) == expected.substr(0, size));
+      }
+      {
+        static_assert(std::is_signed_v<std::iter_difference_t<CharT*>>,
+                      "If the difference type isn't negative the test will fail "
+                      "due to using a large positive value.");
+        CharT buffer[1]                = {CharT(0)};
+        std::format_to_n_result result = std::format_to_n(buffer, -1, std::locale(), fmt, std::forward<Args>(args)...);
+        using diff_type                = decltype(result.size);
+        diff_type formatted_size       = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+
+        assert(result.size == formatted_size);
+        assert(result.out == buffer);
+        assert(buffer[0] == CharT(0));
+      }
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format_to_n become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format_to_n.locale.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.locale.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.locale.verify.cpp
new file mode 100644
index 0000000..ec4e292
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.locale.verify.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       const locale& loc, format-string<Args...> fmt,
+//                                       const Args&... args);
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       const locale& loc, wformat-string<Args...> fmt,
+//                                       const Args&... args);
+
+#include <format>
+#include <locale>
+
+#include "test_macros.h"
+
+extern char* out;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+extern wchar_t* wout;
+#endif
+
+// clang-format off
+
+void f() {
+  std::format_to_n(out, 42, std::locale(), "{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, std::locale(), "{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format_to_n(wout, 42, std::locale(), L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, std::locale(), L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.pass.cpp
new file mode 100644
index 0000000..8ce91da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.pass.cpp
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       format-string<Args...> fmt, const Args&... args);
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <algorithm>
+#include <cassert>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected,
+                test_format_string<CharT, Args...> fmt,
+                Args&&... args) constexpr {
+  {
+    std::list<CharT> out;
+    std::format_to_n_result result = std::format_to_n(std::back_inserter(out), 0, fmt, std::forward<Args>(args)...);
+    // To avoid signedness warnings make sure formatted_size uses the same type
+    // as result.size.
+    using diff_type = decltype(result.size);
+    diff_type formatted_size = std::formatted_size(fmt, std::forward<Args>(args)...);
+
+    assert(result.size == formatted_size);
+    assert(out.empty());
+  }
+  {
+    std::vector<CharT> out;
+    std::format_to_n_result result = std::format_to_n(std::back_inserter(out), 5, fmt, std::forward<Args>(args)...);
+    using diff_type = decltype(result.size);
+    diff_type formatted_size       = std::formatted_size(fmt, std::forward<Args>(args)...);
+    diff_type size = std::min<diff_type>(5, formatted_size);
+
+    assert(result.size == formatted_size);
+    assert(std::equal(out.begin(), out.end(), expected.begin(), expected.begin() + size));
+  }
+  {
+    std::basic_string<CharT> out;
+    std::format_to_n_result result = std::format_to_n(std::back_inserter(out), 1000, fmt, std::forward<Args>(args)...);
+    using diff_type = decltype(result.size);
+    diff_type formatted_size       = std::formatted_size(fmt, std::forward<Args>(args)...);
+    diff_type size = std::min<diff_type>(1000, formatted_size);
+
+    assert(result.size == formatted_size);
+    assert(out == expected.substr(0, size));
+  }
+  {
+    // Test the returned iterator.
+    std::basic_string<CharT> out(10, CharT(' '));
+    std::format_to_n_result result = std::format_to_n(out.begin(), 10, fmt, std::forward<Args>(args)...);
+    using diff_type = decltype(result.size);
+    diff_type formatted_size       = std::formatted_size(fmt, std::forward<Args>(args)...);
+    diff_type size = std::min<diff_type>(10, formatted_size);
+
+    assert(result.size == formatted_size);
+    assert(result.out == out.begin() + size);
+    assert(out.substr(0, size) == expected.substr(0, size));
+  }
+  {
+    static_assert(std::is_signed_v<std::iter_difference_t<CharT*>>,
+                  "If the difference type isn't negative the test will fail "
+                  "due to using a large positive value.");
+    CharT buffer[1] = {CharT(0)};
+    std::format_to_n_result result = std::format_to_n(buffer, -1, fmt, std::forward<Args>(args)...);
+    using diff_type = decltype(result.size);
+    diff_type formatted_size       = std::formatted_size(fmt, std::forward<Args>(args)...);
+
+    assert(result.size == formatted_size);
+    assert(result.out == buffer);
+    assert(buffer[0] == CharT(0));
+  }
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format_to_n become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format_to_n.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.verify.cpp
new file mode 100644
index 0000000..7c064c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/format_to_n.verify.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       format-string<Args...> fmt, const Args&... args);
+// template<class Out, class... Args>
+//   format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                       wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+
+#include "test_macros.h"
+
+extern char* out;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+extern wchar_t* wout;
+#endif
+
+// clang-format off
+
+void f() {
+  std::format_to_n(out, 42, "{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(out, 42, "{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format_to_n(wout, 42, L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format_to_n(wout, 42, L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.locale.pass.cpp
new file mode 100644
index 0000000..625b99f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.locale.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class... Args>
+//   size_t formatted_size(const locale& loc,
+//                         format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   size_t formatted_size(const locale& loc,
+//                         wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      size_t size = std::formatted_size(std::locale(), fmt, std::forward<Args>(args)...);
+      assert(size == expected.size());
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::formatted_siz3 become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in formatted_size.locale.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.locale.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.locale.verify.cpp
new file mode 100644
index 0000000..dc80c12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.locale.verify.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class... Args>
+//   size_t formatted_size(const locale& loc,
+//                         format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   size_t formatted_size(const locale& loc,
+//                         wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <locale>
+
+#include "test_macros.h"
+
+// clang-format off
+
+void f() {
+  std::formatted_size(std::locale(), "{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), "{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::formatted_size(std::locale(), L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(std::locale(), L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.pass.cpp
new file mode 100644
index 0000000..6a627ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class... Args>
+//   size_t formatted_size(format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   size_t formatted_size(wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+
+auto test =
+    []<class CharT, class... Args>(
+        std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
+      size_t size = std::formatted_size(fmt, std::forward<Args>(args)...);
+      assert(size == expected.size());
+    };
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::formatted_siz3 become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in formatted_size.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.verify.cpp
new file mode 100644
index 0000000..1662d89
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/formatted_size.verify.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// Basic test to validate ill-formed code is properly detected.
+
+// <format>
+
+// template<class... Args>
+//   size_t formatted_size(format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   size_t formatted_size(wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+
+#include "test_macros.h"
+
+// clang-format off
+
+void f() {
+  std::formatted_size("{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{:-}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{:#}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{:L}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{0:{0}}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{:.42d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size("{:d}", "Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::formatted_size(L"{"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{0}"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{:-}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{:#}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{:L}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{0:{0}}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{:.42d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::formatted_size(L"{:d}", L"Forty-two"); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp
new file mode 100644
index 0000000..86d56da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/locale-specific_form.pass.cpp
@@ -0,0 +1,2329 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// REQUIRES: locale.en_US.UTF-8
+
+// <format>
+
+// This test the locale-specific form for these formatting functions:
+//
+//  // [format.functions], formatting functions
+//  template<class... Args>
+//    string format(string_view fmt, const Args&... args);
+//  template<class... Args>
+//    wstring format(wstring_view fmt, const Args&... args);
+//  template<class... Args>
+//    string format(const locale& loc, string_view fmt, const Args&... args);
+//  template<class... Args>
+//    wstring format(const locale& loc, wstring_view fmt, const Args&... args);
+//
+//  string vformat(string_view fmt, format_args args);
+//  wstring vformat(wstring_view fmt, wformat_args args);
+//  string vformat(const locale& loc, string_view fmt, format_args args);
+//  wstring vformat(const locale& loc, wstring_view fmt, wformat_args args);
+//
+//  template<class Out, class... Args>
+//    Out format_to(Out out, string_view fmt, const Args&... args);
+//  template<class Out, class... Args>
+//    Out format_to(Out out, wstring_view fmt, const Args&... args);
+//  template<class Out, class... Args>
+//    Out format_to(Out out, const locale& loc, string_view fmt, const Args&... args);
+//  template<class Out, class... Args>
+//    Out format_to(Out out, const locale& loc, wstring_view fmt, const Args&... args);
+//
+//  template<class Out>
+//    Out vformat_to(Out out, string_view fmt, format_args args);
+//  template<class Out>
+//    Out vformat_to(Out out, wstring_view fmt, wformat_args args);
+//  template<class Out>
+//    Out vformat_to(Out out, const locale& loc, string_view fmt,
+//                   format_args args);
+//  template<class Out>
+//    Out vformat_to(Out out, const locale& loc, wstring_view fmt,
+//                   wformat_arg args);
+//
+//  template<class Out> struct format_to_n_result {
+//    Out out;
+//    iter_difference_t<Out> size;
+//  };
+//
+// template<class Out, class... Args>
+//    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                        string_view fmt, const Args&... args);
+//  template<class Out, class... Args>
+//    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                        wstring_view fmt, const Args&... args);
+//  template<class Out, class... Args>
+//    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                        const locale& loc, string_view fmt,
+//                                        const Args&... args);
+//  template<class Out, class... Args>
+//    format_to_n_result<Out> format_to_n(Out out, iter_difference_t<Out> n,
+//                                        const locale& loc, wstring_view fmt,
+//                                        const Args&... args);
+//
+//  template<class... Args>
+//    size_t formatted_size(string_view fmt, const Args&... args);
+//  template<class... Args>
+//    size_t formatted_size(wstring_view fmt, const Args&... args);
+//  template<class... Args>
+//    size_t formatted_size(const locale& loc, string_view fmt, const Args&... args);
+//  template<class... Args>
+//    size_t formatted_size(const locale& loc, wstring_view fmt, const Args&... args);
+
+#include <format>
+#include <cassert>
+#include <iostream>
+#include <vector>
+
+#include "test_macros.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "format_tests.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+#include "assert_macros.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+struct numpunct;
+
+template <>
+struct numpunct<char> : std::numpunct<char> {
+  string_type do_truename() const override { return "yes"; }
+  string_type do_falsename() const override { return "no"; }
+
+  std::string do_grouping() const override { return "\1\2\3\2\1"; };
+  char do_thousands_sep() const override { return '_'; }
+  char do_decimal_point() const override { return '#'; }
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <>
+struct numpunct<wchar_t> : std::numpunct<wchar_t> {
+  string_type do_truename() const override { return L"yes"; }
+  string_type do_falsename() const override { return L"no"; }
+
+  std::string do_grouping() const override { return "\1\2\3\2\1"; };
+  wchar_t do_thousands_sep() const override { return L'_'; }
+  wchar_t do_decimal_point() const override { return L'#'; }
+};
+#endif
+
+template <class CharT, class... Args>
+void test(std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  // *** format ***
+  {
+    std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+    TEST_REQUIRE(out == expected,
+                 test_concat_message(
+                     "\nFormat string   ", fmt.get(), "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+  }
+  // *** vformat ***
+  {
+    std::basic_string<CharT> out = std::vformat(fmt.get(), std::make_format_args<context_t<CharT>>(args...));
+    assert(out == expected);
+  }
+  // *** format_to ***
+  {
+    std::basic_string<CharT> out(expected.size(), CharT(' '));
+    auto it = std::format_to(out.begin(), fmt, std::forward<Args>(args)...);
+    assert(it == out.end());
+    assert(out == expected);
+  }
+  // *** vformat_to ***
+  {
+    std::basic_string<CharT> out(expected.size(), CharT(' '));
+    auto it = std::vformat_to(out.begin(), fmt.get(), std::make_format_args<context_t<CharT>>(args...));
+    assert(it == out.end());
+    assert(out == expected);
+  }
+  // *** format_to_n ***
+  {
+    std::basic_string<CharT> out;
+    std::format_to_n_result result = std::format_to_n(std::back_inserter(out), 1000, fmt, std::forward<Args>(args)...);
+    using diff_type = decltype(result.size);
+    diff_type formatted_size       = std::formatted_size(fmt, std::forward<Args>(args)...);
+    diff_type size = std::min<diff_type>(1000, formatted_size);
+
+    assert(result.size == formatted_size);
+    assert(out == expected.substr(0, size));
+  }
+  // *** formatted_size ***
+  {
+    size_t size = std::formatted_size(fmt, std::forward<Args>(args)...);
+    assert(size == expected.size());
+  }
+}
+
+template <class CharT, class... Args>
+void test(
+    std::basic_string_view<CharT> expected, std::locale loc, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  // *** format ***
+  {
+    std::basic_string<CharT> out = std::format(loc, fmt, std::forward<Args>(args)...);
+    if constexpr (std::same_as<CharT, char>)
+      if (out != expected)
+        std::cerr << "\nFormat string   " << fmt.get() << "\nExpected output " << expected << "\nActual output   "
+                  << out << '\n';
+    assert(out == expected);
+  }
+  // *** vformat ***
+  {
+    std::basic_string<CharT> out = std::vformat(loc, fmt.get(), std::make_format_args<context_t<CharT>>(args...));
+    assert(out == expected);
+  }
+  // *** format_to ***
+  {
+    std::basic_string<CharT> out(expected.size(), CharT(' '));
+    auto it = std::format_to(out.begin(), loc, fmt, std::forward<Args>(args)...);
+    assert(it == out.end());
+    assert(out == expected);
+  }
+  // *** vformat_to ***
+  {
+    std::basic_string<CharT> out(expected.size(), CharT(' '));
+    auto it = std::vformat_to(out.begin(), loc, fmt.get(), std::make_format_args<context_t<CharT>>(args...));
+    assert(it == out.end());
+    assert(out == expected);
+  }
+  // *** format_to_n ***
+  {
+    std::basic_string<CharT> out;
+    std::format_to_n_result result =
+        std::format_to_n(std::back_inserter(out), 1000, loc, fmt, std::forward<Args>(args)...);
+    using diff_type = decltype(result.size);
+    diff_type formatted_size = std::formatted_size(loc, fmt, std::forward<Args>(args)...);
+    diff_type size = std::min<diff_type>(1000, formatted_size);
+
+    assert(result.size == formatted_size);
+    assert(out == expected.substr(0, size));
+  }
+  // *** formatted_size ***
+  {
+    size_t size = std::formatted_size(loc, fmt, std::forward<Args>(args)...);
+    assert(size == expected.size());
+  }
+}
+
+#ifndef TEST_HAS_NO_UNICODE
+template <class CharT>
+struct numpunct_unicode;
+
+template <>
+struct numpunct_unicode<char> : std::numpunct<char> {
+  string_type do_truename() const override { return "gültig"; }
+  string_type do_falsename() const override { return "ungültig"; }
+};
+
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <>
+struct numpunct_unicode<wchar_t> : std::numpunct<wchar_t> {
+  string_type do_truename() const override { return L"gültig"; }
+  string_type do_falsename() const override { return L"ungültig"; }
+};
+#  endif
+#endif // TEST_HAS_NO_UNICODE
+
+template <class CharT>
+void test_bool() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+
+  std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+  assert(std::locale().name() == LOCALE_en_US_UTF_8);
+  test(SV("true"), SV("{:L}"), true);
+  test(SV("false"), SV("{:L}"), false);
+
+  test(SV("yes"), loc, SV("{:L}"), true);
+  test(SV("no"), loc, SV("{:L}"), false);
+
+  std::locale::global(loc);
+  test(SV("yes"), SV("{:L}"), true);
+  test(SV("no"), SV("{:L}"), false);
+
+  test(SV("true"), std::locale(LOCALE_en_US_UTF_8), SV("{:L}"), true);
+  test(SV("false"), std::locale(LOCALE_en_US_UTF_8), SV("{:L}"), false);
+
+#ifndef TEST_HAS_NO_UNICODE
+  std::locale loc_unicode = std::locale(std::locale(), new numpunct_unicode<CharT>());
+
+  test(SV("gültig"), loc_unicode, SV("{:L}"), true);
+  test(SV("ungültig"), loc_unicode, SV("{:L}"), false);
+
+  test(SV("gültig   "), loc_unicode, SV("{:9L}"), true);
+  test(SV("gültig!!!"), loc_unicode, SV("{:!<9L}"), true);
+  test(SV("_gültig__"), loc_unicode, SV("{:_^9L}"), true);
+  test(SV("   gültig"), loc_unicode, SV("{:>9L}"), true);
+#endif // TEST_HAS_NO_UNICODE
+}
+
+template <class CharT>
+void test_integer() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Decimal ***
+  std::locale::global(en_US);
+  test(SV("0"), SV("{:L}"), 0);
+  test(SV("1"), SV("{:L}"), 1);
+  test(SV("10"), SV("{:L}"), 10);
+  test(SV("100"), SV("{:L}"), 100);
+  test(SV("1,000"), SV("{:L}"), 1'000);
+  test(SV("10,000"), SV("{:L}"), 10'000);
+  test(SV("100,000"), SV("{:L}"), 100'000);
+  test(SV("1,000,000"), SV("{:L}"), 1'000'000);
+  test(SV("10,000,000"), SV("{:L}"), 10'000'000);
+  test(SV("100,000,000"), SV("{:L}"), 100'000'000);
+  test(SV("1,000,000,000"), SV("{:L}"), 1'000'000'000);
+
+  test(SV("-1"), SV("{:L}"), -1);
+  test(SV("-10"), SV("{:L}"), -10);
+  test(SV("-100"), SV("{:L}"), -100);
+  test(SV("-1,000"), SV("{:L}"), -1'000);
+  test(SV("-10,000"), SV("{:L}"), -10'000);
+  test(SV("-100,000"), SV("{:L}"), -100'000);
+  test(SV("-1,000,000"), SV("{:L}"), -1'000'000);
+  test(SV("-10,000,000"), SV("{:L}"), -10'000'000);
+  test(SV("-100,000,000"), SV("{:L}"), -100'000'000);
+  test(SV("-1,000,000,000"), SV("{:L}"), -1'000'000'000);
+
+  std::locale::global(loc);
+  test(SV("0"), SV("{:L}"), 0);
+  test(SV("1"), SV("{:L}"), 1);
+  test(SV("1_0"), SV("{:L}"), 10);
+  test(SV("10_0"), SV("{:L}"), 100);
+  test(SV("1_00_0"), SV("{:L}"), 1'000);
+  test(SV("10_00_0"), SV("{:L}"), 10'000);
+  test(SV("100_00_0"), SV("{:L}"), 100'000);
+  test(SV("1_000_00_0"), SV("{:L}"), 1'000'000);
+  test(SV("10_000_00_0"), SV("{:L}"), 10'000'000);
+  test(SV("1_00_000_00_0"), SV("{:L}"), 100'000'000);
+  test(SV("1_0_00_000_00_0"), SV("{:L}"), 1'000'000'000);
+
+  test(SV("-1"), SV("{:L}"), -1);
+  test(SV("-1_0"), SV("{:L}"), -10);
+  test(SV("-10_0"), SV("{:L}"), -100);
+  test(SV("-1_00_0"), SV("{:L}"), -1'000);
+  test(SV("-10_00_0"), SV("{:L}"), -10'000);
+  test(SV("-100_00_0"), SV("{:L}"), -100'000);
+  test(SV("-1_000_00_0"), SV("{:L}"), -1'000'000);
+  test(SV("-10_000_00_0"), SV("{:L}"), -10'000'000);
+  test(SV("-1_00_000_00_0"), SV("{:L}"), -100'000'000);
+  test(SV("-1_0_00_000_00_0"), SV("{:L}"), -1'000'000'000);
+
+  test(SV("0"), en_US, SV("{:L}"), 0);
+  test(SV("1"), en_US, SV("{:L}"), 1);
+  test(SV("10"), en_US, SV("{:L}"), 10);
+  test(SV("100"), en_US, SV("{:L}"), 100);
+  test(SV("1,000"), en_US, SV("{:L}"), 1'000);
+  test(SV("10,000"), en_US, SV("{:L}"), 10'000);
+  test(SV("100,000"), en_US, SV("{:L}"), 100'000);
+  test(SV("1,000,000"), en_US, SV("{:L}"), 1'000'000);
+  test(SV("10,000,000"), en_US, SV("{:L}"), 10'000'000);
+  test(SV("100,000,000"), en_US, SV("{:L}"), 100'000'000);
+  test(SV("1,000,000,000"), en_US, SV("{:L}"), 1'000'000'000);
+
+  test(SV("-1"), en_US, SV("{:L}"), -1);
+  test(SV("-10"), en_US, SV("{:L}"), -10);
+  test(SV("-100"), en_US, SV("{:L}"), -100);
+  test(SV("-1,000"), en_US, SV("{:L}"), -1'000);
+  test(SV("-10,000"), en_US, SV("{:L}"), -10'000);
+  test(SV("-100,000"), en_US, SV("{:L}"), -100'000);
+  test(SV("-1,000,000"), en_US, SV("{:L}"), -1'000'000);
+  test(SV("-10,000,000"), en_US, SV("{:L}"), -10'000'000);
+  test(SV("-100,000,000"), en_US, SV("{:L}"), -100'000'000);
+  test(SV("-1,000,000,000"), en_US, SV("{:L}"), -1'000'000'000);
+
+  std::locale::global(en_US);
+  test(SV("0"), loc, SV("{:L}"), 0);
+  test(SV("1"), loc, SV("{:L}"), 1);
+  test(SV("1_0"), loc, SV("{:L}"), 10);
+  test(SV("10_0"), loc, SV("{:L}"), 100);
+  test(SV("1_00_0"), loc, SV("{:L}"), 1'000);
+  test(SV("10_00_0"), loc, SV("{:L}"), 10'000);
+  test(SV("100_00_0"), loc, SV("{:L}"), 100'000);
+  test(SV("1_000_00_0"), loc, SV("{:L}"), 1'000'000);
+  test(SV("10_000_00_0"), loc, SV("{:L}"), 10'000'000);
+  test(SV("1_00_000_00_0"), loc, SV("{:L}"), 100'000'000);
+  test(SV("1_0_00_000_00_0"), loc, SV("{:L}"), 1'000'000'000);
+
+  test(SV("-1"), loc, SV("{:L}"), -1);
+  test(SV("-1_0"), loc, SV("{:L}"), -10);
+  test(SV("-10_0"), loc, SV("{:L}"), -100);
+  test(SV("-1_00_0"), loc, SV("{:L}"), -1'000);
+  test(SV("-10_00_0"), loc, SV("{:L}"), -10'000);
+  test(SV("-100_00_0"), loc, SV("{:L}"), -100'000);
+  test(SV("-1_000_00_0"), loc, SV("{:L}"), -1'000'000);
+  test(SV("-10_000_00_0"), loc, SV("{:L}"), -10'000'000);
+  test(SV("-1_00_000_00_0"), loc, SV("{:L}"), -100'000'000);
+  test(SV("-1_0_00_000_00_0"), loc, SV("{:L}"), -1'000'000'000);
+
+  // *** Binary ***
+  std::locale::global(en_US);
+  test(SV("0"), SV("{:Lb}"), 0b0);
+  test(SV("1"), SV("{:Lb}"), 0b1);
+  test(SV("1,000,000,000"), SV("{:Lb}"), 0b1'000'000'000);
+
+  test(SV("0b0"), SV("{:#Lb}"), 0b0);
+  test(SV("0b1"), SV("{:#Lb}"), 0b1);
+  test(SV("0b1,000,000,000"), SV("{:#Lb}"), 0b1'000'000'000);
+
+  test(SV("-1"), SV("{:LB}"), -0b1);
+  test(SV("-1,000,000,000"), SV("{:LB}"), -0b1'000'000'000);
+
+  test(SV("-0B1"), SV("{:#LB}"), -0b1);
+  test(SV("-0B1,000,000,000"), SV("{:#LB}"), -0b1'000'000'000);
+
+  std::locale::global(loc);
+  test(SV("0"), SV("{:Lb}"), 0b0);
+  test(SV("1"), SV("{:Lb}"), 0b1);
+  test(SV("1_0_00_000_00_0"), SV("{:Lb}"), 0b1'000'000'000);
+
+  test(SV("0b0"), SV("{:#Lb}"), 0b0);
+  test(SV("0b1"), SV("{:#Lb}"), 0b1);
+  test(SV("0b1_0_00_000_00_0"), SV("{:#Lb}"), 0b1'000'000'000);
+
+  test(SV("-1"), SV("{:LB}"), -0b1);
+  test(SV("-1_0_00_000_00_0"), SV("{:LB}"), -0b1'000'000'000);
+
+  test(SV("-0B1"), SV("{:#LB}"), -0b1);
+  test(SV("-0B1_0_00_000_00_0"), SV("{:#LB}"), -0b1'000'000'000);
+
+  test(SV("0"), en_US, SV("{:Lb}"), 0b0);
+  test(SV("1"), en_US, SV("{:Lb}"), 0b1);
+  test(SV("1,000,000,000"), en_US, SV("{:Lb}"), 0b1'000'000'000);
+
+  test(SV("0b0"), en_US, SV("{:#Lb}"), 0b0);
+  test(SV("0b1"), en_US, SV("{:#Lb}"), 0b1);
+  test(SV("0b1,000,000,000"), en_US, SV("{:#Lb}"), 0b1'000'000'000);
+
+  test(SV("-1"), en_US, SV("{:LB}"), -0b1);
+  test(SV("-1,000,000,000"), en_US, SV("{:LB}"), -0b1'000'000'000);
+
+  test(SV("-0B1"), en_US, SV("{:#LB}"), -0b1);
+  test(SV("-0B1,000,000,000"), en_US, SV("{:#LB}"), -0b1'000'000'000);
+
+  std::locale::global(en_US);
+  test(SV("0"), loc, SV("{:Lb}"), 0b0);
+  test(SV("1"), loc, SV("{:Lb}"), 0b1);
+  test(SV("1_0_00_000_00_0"), loc, SV("{:Lb}"), 0b1'000'000'000);
+
+  test(SV("0b0"), loc, SV("{:#Lb}"), 0b0);
+  test(SV("0b1"), loc, SV("{:#Lb}"), 0b1);
+  test(SV("0b1_0_00_000_00_0"), loc, SV("{:#Lb}"), 0b1'000'000'000);
+
+  test(SV("-1"), loc, SV("{:LB}"), -0b1);
+  test(SV("-1_0_00_000_00_0"), loc, SV("{:LB}"), -0b1'000'000'000);
+
+  test(SV("-0B1"), loc, SV("{:#LB}"), -0b1);
+  test(SV("-0B1_0_00_000_00_0"), loc, SV("{:#LB}"), -0b1'000'000'000);
+
+  // *** Octal ***
+  std::locale::global(en_US);
+  test(SV("0"), SV("{:Lo}"), 00);
+  test(SV("1"), SV("{:Lo}"), 01);
+  test(SV("1,000,000,000"), SV("{:Lo}"), 01'000'000'000);
+
+  test(SV("0"), SV("{:#Lo}"), 00);
+  test(SV("01"), SV("{:#Lo}"), 01);
+  test(SV("01,000,000,000"), SV("{:#Lo}"), 01'000'000'000);
+
+  test(SV("-1"), SV("{:Lo}"), -01);
+  test(SV("-1,000,000,000"), SV("{:Lo}"), -01'000'000'000);
+
+  test(SV("-01"), SV("{:#Lo}"), -01);
+  test(SV("-01,000,000,000"), SV("{:#Lo}"), -01'000'000'000);
+
+  std::locale::global(loc);
+  test(SV("0"), SV("{:Lo}"), 00);
+  test(SV("1"), SV("{:Lo}"), 01);
+  test(SV("1_0_00_000_00_0"), SV("{:Lo}"), 01'000'000'000);
+
+  test(SV("0"), SV("{:#Lo}"), 00);
+  test(SV("01"), SV("{:#Lo}"), 01);
+  test(SV("01_0_00_000_00_0"), SV("{:#Lo}"), 01'000'000'000);
+
+  test(SV("-1"), SV("{:Lo}"), -01);
+  test(SV("-1_0_00_000_00_0"), SV("{:Lo}"), -01'000'000'000);
+
+  test(SV("-01"), SV("{:#Lo}"), -01);
+  test(SV("-01_0_00_000_00_0"), SV("{:#Lo}"), -01'000'000'000);
+
+  test(SV("0"), en_US, SV("{:Lo}"), 00);
+  test(SV("1"), en_US, SV("{:Lo}"), 01);
+  test(SV("1,000,000,000"), en_US, SV("{:Lo}"), 01'000'000'000);
+
+  test(SV("0"), en_US, SV("{:#Lo}"), 00);
+  test(SV("01"), en_US, SV("{:#Lo}"), 01);
+  test(SV("01,000,000,000"), en_US, SV("{:#Lo}"), 01'000'000'000);
+
+  test(SV("-1"), en_US, SV("{:Lo}"), -01);
+  test(SV("-1,000,000,000"), en_US, SV("{:Lo}"), -01'000'000'000);
+
+  test(SV("-01"), en_US, SV("{:#Lo}"), -01);
+  test(SV("-01,000,000,000"), en_US, SV("{:#Lo}"), -01'000'000'000);
+
+  std::locale::global(en_US);
+  test(SV("0"), loc, SV("{:Lo}"), 00);
+  test(SV("1"), loc, SV("{:Lo}"), 01);
+  test(SV("1_0_00_000_00_0"), loc, SV("{:Lo}"), 01'000'000'000);
+
+  test(SV("0"), loc, SV("{:#Lo}"), 00);
+  test(SV("01"), loc, SV("{:#Lo}"), 01);
+  test(SV("01_0_00_000_00_0"), loc, SV("{:#Lo}"), 01'000'000'000);
+
+  test(SV("-1"), loc, SV("{:Lo}"), -01);
+  test(SV("-1_0_00_000_00_0"), loc, SV("{:Lo}"), -01'000'000'000);
+
+  test(SV("-01"), loc, SV("{:#Lo}"), -01);
+  test(SV("-01_0_00_000_00_0"), loc, SV("{:#Lo}"), -01'000'000'000);
+
+  // *** Hexadecimal ***
+  std::locale::global(en_US);
+  test(SV("0"), SV("{:Lx}"), 0x0);
+  test(SV("1"), SV("{:Lx}"), 0x1);
+  test(SV("1,000,000,000"), SV("{:Lx}"), 0x1'000'000'000);
+
+  test(SV("0x0"), SV("{:#Lx}"), 0x0);
+  test(SV("0x1"), SV("{:#Lx}"), 0x1);
+  test(SV("0x1,000,000,000"), SV("{:#Lx}"), 0x1'000'000'000);
+
+  test(SV("-1"), SV("{:LX}"), -0x1);
+  test(SV("-1,000,000,000"), SV("{:LX}"), -0x1'000'000'000);
+
+  test(SV("-0X1"), SV("{:#LX}"), -0x1);
+  test(SV("-0X1,000,000,000"), SV("{:#LX}"), -0x1'000'000'000);
+
+  std::locale::global(loc);
+  test(SV("0"), SV("{:Lx}"), 0x0);
+  test(SV("1"), SV("{:Lx}"), 0x1);
+  test(SV("1_0_00_000_00_0"), SV("{:Lx}"), 0x1'000'000'000);
+
+  test(SV("0x0"), SV("{:#Lx}"), 0x0);
+  test(SV("0x1"), SV("{:#Lx}"), 0x1);
+  test(SV("0x1_0_00_000_00_0"), SV("{:#Lx}"), 0x1'000'000'000);
+
+  test(SV("-1"), SV("{:LX}"), -0x1);
+  test(SV("-1_0_00_000_00_0"), SV("{:LX}"), -0x1'000'000'000);
+
+  test(SV("-0X1"), SV("{:#LX}"), -0x1);
+  test(SV("-0X1_0_00_000_00_0"), SV("{:#LX}"), -0x1'000'000'000);
+
+  test(SV("0"), en_US, SV("{:Lx}"), 0x0);
+  test(SV("1"), en_US, SV("{:Lx}"), 0x1);
+  test(SV("1,000,000,000"), en_US, SV("{:Lx}"), 0x1'000'000'000);
+
+  test(SV("0x0"), en_US, SV("{:#Lx}"), 0x0);
+  test(SV("0x1"), en_US, SV("{:#Lx}"), 0x1);
+  test(SV("0x1,000,000,000"), en_US, SV("{:#Lx}"), 0x1'000'000'000);
+
+  test(SV("-1"), en_US, SV("{:LX}"), -0x1);
+  test(SV("-1,000,000,000"), en_US, SV("{:LX}"), -0x1'000'000'000);
+
+  test(SV("-0X1"), en_US, SV("{:#LX}"), -0x1);
+  test(SV("-0X1,000,000,000"), en_US, SV("{:#LX}"), -0x1'000'000'000);
+
+  std::locale::global(en_US);
+  test(SV("0"), loc, SV("{:Lx}"), 0x0);
+  test(SV("1"), loc, SV("{:Lx}"), 0x1);
+  test(SV("1_0_00_000_00_0"), loc, SV("{:Lx}"), 0x1'000'000'000);
+
+  test(SV("0x0"), loc, SV("{:#Lx}"), 0x0);
+  test(SV("0x1"), loc, SV("{:#Lx}"), 0x1);
+  test(SV("0x1_0_00_000_00_0"), loc, SV("{:#Lx}"), 0x1'000'000'000);
+
+  test(SV("-1"), loc, SV("{:LX}"), -0x1);
+  test(SV("-1_0_00_000_00_0"), loc, SV("{:LX}"), -0x1'000'000'000);
+
+  test(SV("-0X1"), loc, SV("{:#LX}"), -0x1);
+  test(SV("-0X1_0_00_000_00_0"), loc, SV("{:#LX}"), -0x1'000'000'000);
+
+  // *** align-fill & width ***
+  test(SV("4_2"), loc, SV("{:L}"), 42);
+
+  test(SV("   4_2"), loc, SV("{:6L}"), 42);
+  test(SV("4_2   "), loc, SV("{:<6L}"), 42);
+  test(SV(" 4_2  "), loc, SV("{:^6L}"), 42);
+  test(SV("   4_2"), loc, SV("{:>6L}"), 42);
+
+  test(SV("4_2***"), loc, SV("{:*<6L}"), 42);
+  test(SV("*4_2**"), loc, SV("{:*^6L}"), 42);
+  test(SV("***4_2"), loc, SV("{:*>6L}"), 42);
+
+  test(SV("4_a*****"), loc, SV("{:*<8Lx}"), 0x4a);
+  test(SV("**4_a***"), loc, SV("{:*^8Lx}"), 0x4a);
+  test(SV("*****4_a"), loc, SV("{:*>8Lx}"), 0x4a);
+
+  test(SV("0x4_a***"), loc, SV("{:*<#8Lx}"), 0x4a);
+  test(SV("*0x4_a**"), loc, SV("{:*^#8Lx}"), 0x4a);
+  test(SV("***0x4_a"), loc, SV("{:*>#8Lx}"), 0x4a);
+
+  test(SV("4_A*****"), loc, SV("{:*<8LX}"), 0x4a);
+  test(SV("**4_A***"), loc, SV("{:*^8LX}"), 0x4a);
+  test(SV("*****4_A"), loc, SV("{:*>8LX}"), 0x4a);
+
+  test(SV("0X4_A***"), loc, SV("{:*<#8LX}"), 0x4a);
+  test(SV("*0X4_A**"), loc, SV("{:*^#8LX}"), 0x4a);
+  test(SV("***0X4_A"), loc, SV("{:*>#8LX}"), 0x4a);
+
+  // Test whether zero padding is ignored
+  test(SV("4_2   "), loc, SV("{:<06L}"), 42);
+  test(SV(" 4_2  "), loc, SV("{:^06L}"), 42);
+  test(SV("   4_2"), loc, SV("{:>06L}"), 42);
+
+  // *** zero-padding & width ***
+  test(SV("   4_2"), loc, SV("{:6L}"), 42);
+  test(SV("0004_2"), loc, SV("{:06L}"), 42);
+  test(SV("-004_2"), loc, SV("{:06L}"), -42);
+
+  test(SV("000004_a"), loc, SV("{:08Lx}"), 0x4a);
+  test(SV("0x0004_a"), loc, SV("{:#08Lx}"), 0x4a);
+  test(SV("0X0004_A"), loc, SV("{:#08LX}"), 0x4a);
+
+  test(SV("-00004_a"), loc, SV("{:08Lx}"), -0x4a);
+  test(SV("-0x004_a"), loc, SV("{:#08Lx}"), -0x4a);
+  test(SV("-0X004_A"), loc, SV("{:#08LX}"), -0x4a);
+}
+
+template <class F, class CharT>
+void test_floating_point_hex_lower_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.23456p-3"), SV("{:La}"), F(0x1.23456p-3));
+  test(SV("1.23456p-2"), SV("{:La}"), F(0x1.23456p-2));
+  test(SV("1.23456p-1"), SV("{:La}"), F(0x1.23456p-1));
+  test(SV("1.23456p+0"), SV("{:La}"), F(0x1.23456p0));
+  test(SV("1.23456p+1"), SV("{:La}"), F(0x1.23456p+1));
+  test(SV("1.23456p+2"), SV("{:La}"), F(0x1.23456p+2));
+  test(SV("1.23456p+3"), SV("{:La}"), F(0x1.23456p+3));
+  test(SV("1.23456p+20"), SV("{:La}"), F(0x1.23456p+20));
+
+  std::locale::global(loc);
+  test(SV("1#23456p-3"), SV("{:La}"), F(0x1.23456p-3));
+  test(SV("1#23456p-2"), SV("{:La}"), F(0x1.23456p-2));
+  test(SV("1#23456p-1"), SV("{:La}"), F(0x1.23456p-1));
+  test(SV("1#23456p+0"), SV("{:La}"), F(0x1.23456p0));
+  test(SV("1#23456p+1"), SV("{:La}"), F(0x1.23456p+1));
+  test(SV("1#23456p+2"), SV("{:La}"), F(0x1.23456p+2));
+  test(SV("1#23456p+3"), SV("{:La}"), F(0x1.23456p+3));
+  test(SV("1#23456p+20"), SV("{:La}"), F(0x1.23456p+20));
+
+  test(SV("1.23456p-3"), en_US, SV("{:La}"), F(0x1.23456p-3));
+  test(SV("1.23456p-2"), en_US, SV("{:La}"), F(0x1.23456p-2));
+  test(SV("1.23456p-1"), en_US, SV("{:La}"), F(0x1.23456p-1));
+  test(SV("1.23456p+0"), en_US, SV("{:La}"), F(0x1.23456p0));
+  test(SV("1.23456p+1"), en_US, SV("{:La}"), F(0x1.23456p+1));
+  test(SV("1.23456p+2"), en_US, SV("{:La}"), F(0x1.23456p+2));
+  test(SV("1.23456p+3"), en_US, SV("{:La}"), F(0x1.23456p+3));
+  test(SV("1.23456p+20"), en_US, SV("{:La}"), F(0x1.23456p+20));
+
+  std::locale::global(en_US);
+  test(SV("1#23456p-3"), loc, SV("{:La}"), F(0x1.23456p-3));
+  test(SV("1#23456p-2"), loc, SV("{:La}"), F(0x1.23456p-2));
+  test(SV("1#23456p-1"), loc, SV("{:La}"), F(0x1.23456p-1));
+  test(SV("1#23456p+0"), loc, SV("{:La}"), F(0x1.23456p0));
+  test(SV("1#23456p+1"), loc, SV("{:La}"), F(0x1.23456p+1));
+  test(SV("1#23456p+2"), loc, SV("{:La}"), F(0x1.23456p+2));
+  test(SV("1#23456p+3"), loc, SV("{:La}"), F(0x1.23456p+3));
+  test(SV("1#23456p+20"), loc, SV("{:La}"), F(0x1.23456p+20));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1.23456p+3$$$"), SV("{:$<13La}"), F(0x1.23456p3));
+  test(SV("$$$1.23456p+3"), SV("{:$>13La}"), F(0x1.23456p3));
+  test(SV("$1.23456p+3$$"), SV("{:$^13La}"), F(0x1.23456p3));
+  test(SV("0001.23456p+3"), SV("{:013La}"), F(0x1.23456p3));
+  test(SV("-1.23456p+3$$$"), SV("{:$<14La}"), F(-0x1.23456p3));
+  test(SV("$$$-1.23456p+3"), SV("{:$>14La}"), F(-0x1.23456p3));
+  test(SV("$-1.23456p+3$$"), SV("{:$^14La}"), F(-0x1.23456p3));
+  test(SV("-0001.23456p+3"), SV("{:014La}"), F(-0x1.23456p3));
+
+  std::locale::global(loc);
+  test(SV("1#23456p+3$$$"), SV("{:$<13La}"), F(0x1.23456p3));
+  test(SV("$$$1#23456p+3"), SV("{:$>13La}"), F(0x1.23456p3));
+  test(SV("$1#23456p+3$$"), SV("{:$^13La}"), F(0x1.23456p3));
+  test(SV("0001#23456p+3"), SV("{:013La}"), F(0x1.23456p3));
+  test(SV("-1#23456p+3$$$"), SV("{:$<14La}"), F(-0x1.23456p3));
+  test(SV("$$$-1#23456p+3"), SV("{:$>14La}"), F(-0x1.23456p3));
+  test(SV("$-1#23456p+3$$"), SV("{:$^14La}"), F(-0x1.23456p3));
+  test(SV("-0001#23456p+3"), SV("{:014La}"), F(-0x1.23456p3));
+
+  test(SV("1.23456p+3$$$"), en_US, SV("{:$<13La}"), F(0x1.23456p3));
+  test(SV("$$$1.23456p+3"), en_US, SV("{:$>13La}"), F(0x1.23456p3));
+  test(SV("$1.23456p+3$$"), en_US, SV("{:$^13La}"), F(0x1.23456p3));
+  test(SV("0001.23456p+3"), en_US, SV("{:013La}"), F(0x1.23456p3));
+  test(SV("-1.23456p+3$$$"), en_US, SV("{:$<14La}"), F(-0x1.23456p3));
+  test(SV("$$$-1.23456p+3"), en_US, SV("{:$>14La}"), F(-0x1.23456p3));
+  test(SV("$-1.23456p+3$$"), en_US, SV("{:$^14La}"), F(-0x1.23456p3));
+  test(SV("-0001.23456p+3"), en_US, SV("{:014La}"), F(-0x1.23456p3));
+
+  std::locale::global(en_US);
+  test(SV("1#23456p+3$$$"), loc, SV("{:$<13La}"), F(0x1.23456p3));
+  test(SV("$$$1#23456p+3"), loc, SV("{:$>13La}"), F(0x1.23456p3));
+  test(SV("$1#23456p+3$$"), loc, SV("{:$^13La}"), F(0x1.23456p3));
+  test(SV("0001#23456p+3"), loc, SV("{:013La}"), F(0x1.23456p3));
+  test(SV("-1#23456p+3$$$"), loc, SV("{:$<14La}"), F(-0x1.23456p3));
+  test(SV("$$$-1#23456p+3"), loc, SV("{:$>14La}"), F(-0x1.23456p3));
+  test(SV("$-1#23456p+3$$"), loc, SV("{:$^14La}"), F(-0x1.23456p3));
+  test(SV("-0001#23456p+3"), loc, SV("{:014La}"), F(-0x1.23456p3));
+}
+
+template <class F, class CharT>
+void test_floating_point_hex_upper_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.23456P-3"), SV("{:LA}"), F(0x1.23456p-3));
+  test(SV("1.23456P-2"), SV("{:LA}"), F(0x1.23456p-2));
+  test(SV("1.23456P-1"), SV("{:LA}"), F(0x1.23456p-1));
+  test(SV("1.23456P+0"), SV("{:LA}"), F(0x1.23456p0));
+  test(SV("1.23456P+1"), SV("{:LA}"), F(0x1.23456p+1));
+  test(SV("1.23456P+2"), SV("{:LA}"), F(0x1.23456p+2));
+  test(SV("1.23456P+3"), SV("{:LA}"), F(0x1.23456p+3));
+  test(SV("1.23456P+20"), SV("{:LA}"), F(0x1.23456p+20));
+
+  std::locale::global(loc);
+  test(SV("1#23456P-3"), SV("{:LA}"), F(0x1.23456p-3));
+  test(SV("1#23456P-2"), SV("{:LA}"), F(0x1.23456p-2));
+  test(SV("1#23456P-1"), SV("{:LA}"), F(0x1.23456p-1));
+  test(SV("1#23456P+0"), SV("{:LA}"), F(0x1.23456p0));
+  test(SV("1#23456P+1"), SV("{:LA}"), F(0x1.23456p+1));
+  test(SV("1#23456P+2"), SV("{:LA}"), F(0x1.23456p+2));
+  test(SV("1#23456P+3"), SV("{:LA}"), F(0x1.23456p+3));
+  test(SV("1#23456P+20"), SV("{:LA}"), F(0x1.23456p+20));
+
+  test(SV("1.23456P-3"), en_US, SV("{:LA}"), F(0x1.23456p-3));
+  test(SV("1.23456P-2"), en_US, SV("{:LA}"), F(0x1.23456p-2));
+  test(SV("1.23456P-1"), en_US, SV("{:LA}"), F(0x1.23456p-1));
+  test(SV("1.23456P+0"), en_US, SV("{:LA}"), F(0x1.23456p0));
+  test(SV("1.23456P+1"), en_US, SV("{:LA}"), F(0x1.23456p+1));
+  test(SV("1.23456P+2"), en_US, SV("{:LA}"), F(0x1.23456p+2));
+  test(SV("1.23456P+3"), en_US, SV("{:LA}"), F(0x1.23456p+3));
+  test(SV("1.23456P+20"), en_US, SV("{:LA}"), F(0x1.23456p+20));
+
+  std::locale::global(en_US);
+  test(SV("1#23456P-3"), loc, SV("{:LA}"), F(0x1.23456p-3));
+  test(SV("1#23456P-2"), loc, SV("{:LA}"), F(0x1.23456p-2));
+  test(SV("1#23456P-1"), loc, SV("{:LA}"), F(0x1.23456p-1));
+  test(SV("1#23456P+0"), loc, SV("{:LA}"), F(0x1.23456p0));
+  test(SV("1#23456P+1"), loc, SV("{:LA}"), F(0x1.23456p+1));
+  test(SV("1#23456P+2"), loc, SV("{:LA}"), F(0x1.23456p+2));
+  test(SV("1#23456P+3"), loc, SV("{:LA}"), F(0x1.23456p+3));
+  test(SV("1#23456P+20"), loc, SV("{:LA}"), F(0x1.23456p+20));
+
+  // *** Fill, align, zero Padding ***
+  std::locale::global(en_US);
+  test(SV("1.23456P+3$$$"), SV("{:$<13LA}"), F(0x1.23456p3));
+  test(SV("$$$1.23456P+3"), SV("{:$>13LA}"), F(0x1.23456p3));
+  test(SV("$1.23456P+3$$"), SV("{:$^13LA}"), F(0x1.23456p3));
+  test(SV("0001.23456P+3"), SV("{:013LA}"), F(0x1.23456p3));
+  test(SV("-1.23456P+3$$$"), SV("{:$<14LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1.23456P+3"), SV("{:$>14LA}"), F(-0x1.23456p3));
+  test(SV("$-1.23456P+3$$"), SV("{:$^14LA}"), F(-0x1.23456p3));
+  test(SV("-0001.23456P+3"), SV("{:014LA}"), F(-0x1.23456p3));
+
+  std::locale::global(loc);
+  test(SV("1#23456P+3$$$"), SV("{:$<13LA}"), F(0x1.23456p3));
+  test(SV("$$$1#23456P+3"), SV("{:$>13LA}"), F(0x1.23456p3));
+  test(SV("$1#23456P+3$$"), SV("{:$^13LA}"), F(0x1.23456p3));
+  test(SV("0001#23456P+3"), SV("{:013LA}"), F(0x1.23456p3));
+  test(SV("-1#23456P+3$$$"), SV("{:$<14LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1#23456P+3"), SV("{:$>14LA}"), F(-0x1.23456p3));
+  test(SV("$-1#23456P+3$$"), SV("{:$^14LA}"), F(-0x1.23456p3));
+  test(SV("-0001#23456P+3"), SV("{:014LA}"), F(-0x1.23456p3));
+
+  test(SV("1.23456P+3$$$"), en_US, SV("{:$<13LA}"), F(0x1.23456p3));
+  test(SV("$$$1.23456P+3"), en_US, SV("{:$>13LA}"), F(0x1.23456p3));
+  test(SV("$1.23456P+3$$"), en_US, SV("{:$^13LA}"), F(0x1.23456p3));
+  test(SV("0001.23456P+3"), en_US, SV("{:013LA}"), F(0x1.23456p3));
+  test(SV("-1.23456P+3$$$"), en_US, SV("{:$<14LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1.23456P+3"), en_US, SV("{:$>14LA}"), F(-0x1.23456p3));
+  test(SV("$-1.23456P+3$$"), en_US, SV("{:$^14LA}"), F(-0x1.23456p3));
+  test(SV("-0001.23456P+3"), en_US, SV("{:014LA}"), F(-0x1.23456p3));
+
+  std::locale::global(en_US);
+  test(SV("1#23456P+3$$$"), loc, SV("{:$<13LA}"), F(0x1.23456p3));
+  test(SV("$$$1#23456P+3"), loc, SV("{:$>13LA}"), F(0x1.23456p3));
+  test(SV("$1#23456P+3$$"), loc, SV("{:$^13LA}"), F(0x1.23456p3));
+  test(SV("0001#23456P+3"), loc, SV("{:013LA}"), F(0x1.23456p3));
+  test(SV("-1#23456P+3$$$"), loc, SV("{:$<14LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1#23456P+3"), loc, SV("{:$>14LA}"), F(-0x1.23456p3));
+  test(SV("$-1#23456P+3$$"), loc, SV("{:$^14LA}"), F(-0x1.23456p3));
+  test(SV("-0001#23456P+3"), loc, SV("{:014LA}"), F(-0x1.23456p3));
+}
+
+template <class F, class CharT>
+void test_floating_point_hex_lower_case_precision() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.234560p-3"), SV("{:.6La}"), F(0x1.23456p-3));
+  test(SV("1.234560p-2"), SV("{:.6La}"), F(0x1.23456p-2));
+  test(SV("1.234560p-1"), SV("{:.6La}"), F(0x1.23456p-1));
+  test(SV("1.234560p+0"), SV("{:.6La}"), F(0x1.23456p0));
+  test(SV("1.234560p+1"), SV("{:.6La}"), F(0x1.23456p+1));
+  test(SV("1.234560p+2"), SV("{:.6La}"), F(0x1.23456p+2));
+  test(SV("1.234560p+3"), SV("{:.6La}"), F(0x1.23456p+3));
+  test(SV("1.234560p+20"), SV("{:.6La}"), F(0x1.23456p+20));
+
+  std::locale::global(loc);
+  test(SV("1#234560p-3"), SV("{:.6La}"), F(0x1.23456p-3));
+  test(SV("1#234560p-2"), SV("{:.6La}"), F(0x1.23456p-2));
+  test(SV("1#234560p-1"), SV("{:.6La}"), F(0x1.23456p-1));
+  test(SV("1#234560p+0"), SV("{:.6La}"), F(0x1.23456p0));
+  test(SV("1#234560p+1"), SV("{:.6La}"), F(0x1.23456p+1));
+  test(SV("1#234560p+2"), SV("{:.6La}"), F(0x1.23456p+2));
+  test(SV("1#234560p+3"), SV("{:.6La}"), F(0x1.23456p+3));
+  test(SV("1#234560p+20"), SV("{:.6La}"), F(0x1.23456p+20));
+
+  test(SV("1.234560p-3"), en_US, SV("{:.6La}"), F(0x1.23456p-3));
+  test(SV("1.234560p-2"), en_US, SV("{:.6La}"), F(0x1.23456p-2));
+  test(SV("1.234560p-1"), en_US, SV("{:.6La}"), F(0x1.23456p-1));
+  test(SV("1.234560p+0"), en_US, SV("{:.6La}"), F(0x1.23456p0));
+  test(SV("1.234560p+1"), en_US, SV("{:.6La}"), F(0x1.23456p+1));
+  test(SV("1.234560p+2"), en_US, SV("{:.6La}"), F(0x1.23456p+2));
+  test(SV("1.234560p+3"), en_US, SV("{:.6La}"), F(0x1.23456p+3));
+  test(SV("1.234560p+20"), en_US, SV("{:.6La}"), F(0x1.23456p+20));
+
+  std::locale::global(en_US);
+  test(SV("1#234560p-3"), loc, SV("{:.6La}"), F(0x1.23456p-3));
+  test(SV("1#234560p-2"), loc, SV("{:.6La}"), F(0x1.23456p-2));
+  test(SV("1#234560p-1"), loc, SV("{:.6La}"), F(0x1.23456p-1));
+  test(SV("1#234560p+0"), loc, SV("{:.6La}"), F(0x1.23456p0));
+  test(SV("1#234560p+1"), loc, SV("{:.6La}"), F(0x1.23456p+1));
+  test(SV("1#234560p+2"), loc, SV("{:.6La}"), F(0x1.23456p+2));
+  test(SV("1#234560p+3"), loc, SV("{:.6La}"), F(0x1.23456p+3));
+  test(SV("1#234560p+20"), loc, SV("{:.6La}"), F(0x1.23456p+20));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1.234560p+3$$$"), SV("{:$<14.6La}"), F(0x1.23456p3));
+  test(SV("$$$1.234560p+3"), SV("{:$>14.6La}"), F(0x1.23456p3));
+  test(SV("$1.234560p+3$$"), SV("{:$^14.6La}"), F(0x1.23456p3));
+  test(SV("0001.234560p+3"), SV("{:014.6La}"), F(0x1.23456p3));
+  test(SV("-1.234560p+3$$$"), SV("{:$<15.6La}"), F(-0x1.23456p3));
+  test(SV("$$$-1.234560p+3"), SV("{:$>15.6La}"), F(-0x1.23456p3));
+  test(SV("$-1.234560p+3$$"), SV("{:$^15.6La}"), F(-0x1.23456p3));
+  test(SV("-0001.234560p+3"), SV("{:015.6La}"), F(-0x1.23456p3));
+
+  std::locale::global(loc);
+  test(SV("1#234560p+3$$$"), SV("{:$<14.6La}"), F(0x1.23456p3));
+  test(SV("$$$1#234560p+3"), SV("{:$>14.6La}"), F(0x1.23456p3));
+  test(SV("$1#234560p+3$$"), SV("{:$^14.6La}"), F(0x1.23456p3));
+  test(SV("0001#234560p+3"), SV("{:014.6La}"), F(0x1.23456p3));
+  test(SV("-1#234560p+3$$$"), SV("{:$<15.6La}"), F(-0x1.23456p3));
+  test(SV("$$$-1#234560p+3"), SV("{:$>15.6La}"), F(-0x1.23456p3));
+  test(SV("$-1#234560p+3$$"), SV("{:$^15.6La}"), F(-0x1.23456p3));
+  test(SV("-0001#234560p+3"), SV("{:015.6La}"), F(-0x1.23456p3));
+
+  test(SV("1.234560p+3$$$"), en_US, SV("{:$<14.6La}"), F(0x1.23456p3));
+  test(SV("$$$1.234560p+3"), en_US, SV("{:$>14.6La}"), F(0x1.23456p3));
+  test(SV("$1.234560p+3$$"), en_US, SV("{:$^14.6La}"), F(0x1.23456p3));
+  test(SV("0001.234560p+3"), en_US, SV("{:014.6La}"), F(0x1.23456p3));
+  test(SV("-1.234560p+3$$$"), en_US, SV("{:$<15.6La}"), F(-0x1.23456p3));
+  test(SV("$$$-1.234560p+3"), en_US, SV("{:$>15.6La}"), F(-0x1.23456p3));
+  test(SV("$-1.234560p+3$$"), en_US, SV("{:$^15.6La}"), F(-0x1.23456p3));
+  test(SV("-0001.234560p+3"), en_US, SV("{:015.6La}"), F(-0x1.23456p3));
+
+  std::locale::global(en_US);
+  test(SV("1#234560p+3$$$"), loc, SV("{:$<14.6La}"), F(0x1.23456p3));
+  test(SV("$$$1#234560p+3"), loc, SV("{:$>14.6La}"), F(0x1.23456p3));
+  test(SV("$1#234560p+3$$"), loc, SV("{:$^14.6La}"), F(0x1.23456p3));
+  test(SV("0001#234560p+3"), loc, SV("{:014.6La}"), F(0x1.23456p3));
+  test(SV("-1#234560p+3$$$"), loc, SV("{:$<15.6La}"), F(-0x1.23456p3));
+  test(SV("$$$-1#234560p+3"), loc, SV("{:$>15.6La}"), F(-0x1.23456p3));
+  test(SV("$-1#234560p+3$$"), loc, SV("{:$^15.6La}"), F(-0x1.23456p3));
+  test(SV("-0001#234560p+3"), loc, SV("{:015.6La}"), F(-0x1.23456p3));
+}
+
+template <class F, class CharT>
+void test_floating_point_hex_upper_case_precision() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.234560P-3"), SV("{:.6LA}"), F(0x1.23456p-3));
+  test(SV("1.234560P-2"), SV("{:.6LA}"), F(0x1.23456p-2));
+  test(SV("1.234560P-1"), SV("{:.6LA}"), F(0x1.23456p-1));
+  test(SV("1.234560P+0"), SV("{:.6LA}"), F(0x1.23456p0));
+  test(SV("1.234560P+1"), SV("{:.6LA}"), F(0x1.23456p+1));
+  test(SV("1.234560P+2"), SV("{:.6LA}"), F(0x1.23456p+2));
+  test(SV("1.234560P+3"), SV("{:.6LA}"), F(0x1.23456p+3));
+  test(SV("1.234560P+20"), SV("{:.6LA}"), F(0x1.23456p+20));
+
+  std::locale::global(loc);
+  test(SV("1#234560P-3"), SV("{:.6LA}"), F(0x1.23456p-3));
+  test(SV("1#234560P-2"), SV("{:.6LA}"), F(0x1.23456p-2));
+  test(SV("1#234560P-1"), SV("{:.6LA}"), F(0x1.23456p-1));
+  test(SV("1#234560P+0"), SV("{:.6LA}"), F(0x1.23456p0));
+  test(SV("1#234560P+1"), SV("{:.6LA}"), F(0x1.23456p+1));
+  test(SV("1#234560P+2"), SV("{:.6LA}"), F(0x1.23456p+2));
+  test(SV("1#234560P+3"), SV("{:.6LA}"), F(0x1.23456p+3));
+  test(SV("1#234560P+20"), SV("{:.6LA}"), F(0x1.23456p+20));
+
+  test(SV("1.234560P-3"), en_US, SV("{:.6LA}"), F(0x1.23456p-3));
+  test(SV("1.234560P-2"), en_US, SV("{:.6LA}"), F(0x1.23456p-2));
+  test(SV("1.234560P-1"), en_US, SV("{:.6LA}"), F(0x1.23456p-1));
+  test(SV("1.234560P+0"), en_US, SV("{:.6LA}"), F(0x1.23456p0));
+  test(SV("1.234560P+1"), en_US, SV("{:.6LA}"), F(0x1.23456p+1));
+  test(SV("1.234560P+2"), en_US, SV("{:.6LA}"), F(0x1.23456p+2));
+  test(SV("1.234560P+3"), en_US, SV("{:.6LA}"), F(0x1.23456p+3));
+  test(SV("1.234560P+20"), en_US, SV("{:.6LA}"), F(0x1.23456p+20));
+
+  std::locale::global(en_US);
+  test(SV("1#234560P-3"), loc, SV("{:.6LA}"), F(0x1.23456p-3));
+  test(SV("1#234560P-2"), loc, SV("{:.6LA}"), F(0x1.23456p-2));
+  test(SV("1#234560P-1"), loc, SV("{:.6LA}"), F(0x1.23456p-1));
+  test(SV("1#234560P+0"), loc, SV("{:.6LA}"), F(0x1.23456p0));
+  test(SV("1#234560P+1"), loc, SV("{:.6LA}"), F(0x1.23456p+1));
+  test(SV("1#234560P+2"), loc, SV("{:.6LA}"), F(0x1.23456p+2));
+  test(SV("1#234560P+3"), loc, SV("{:.6LA}"), F(0x1.23456p+3));
+  test(SV("1#234560P+20"), loc, SV("{:.6LA}"), F(0x1.23456p+20));
+
+  // *** Fill, align, zero Padding ***
+  std::locale::global(en_US);
+  test(SV("1.234560P+3$$$"), SV("{:$<14.6LA}"), F(0x1.23456p3));
+  test(SV("$$$1.234560P+3"), SV("{:$>14.6LA}"), F(0x1.23456p3));
+  test(SV("$1.234560P+3$$"), SV("{:$^14.6LA}"), F(0x1.23456p3));
+  test(SV("0001.234560P+3"), SV("{:014.6LA}"), F(0x1.23456p3));
+  test(SV("-1.234560P+3$$$"), SV("{:$<15.6LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1.234560P+3"), SV("{:$>15.6LA}"), F(-0x1.23456p3));
+  test(SV("$-1.234560P+3$$"), SV("{:$^15.6LA}"), F(-0x1.23456p3));
+  test(SV("-0001.234560P+3"), SV("{:015.6LA}"), F(-0x1.23456p3));
+
+  std::locale::global(loc);
+  test(SV("1#234560P+3$$$"), SV("{:$<14.6LA}"), F(0x1.23456p3));
+  test(SV("$$$1#234560P+3"), SV("{:$>14.6LA}"), F(0x1.23456p3));
+  test(SV("$1#234560P+3$$"), SV("{:$^14.6LA}"), F(0x1.23456p3));
+  test(SV("0001#234560P+3"), SV("{:014.6LA}"), F(0x1.23456p3));
+  test(SV("-1#234560P+3$$$"), SV("{:$<15.6LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1#234560P+3"), SV("{:$>15.6LA}"), F(-0x1.23456p3));
+  test(SV("$-1#234560P+3$$"), SV("{:$^15.6LA}"), F(-0x1.23456p3));
+  test(SV("-0001#234560P+3"), SV("{:015.6LA}"), F(-0x1.23456p3));
+
+  test(SV("1.234560P+3$$$"), en_US, SV("{:$<14.6LA}"), F(0x1.23456p3));
+  test(SV("$$$1.234560P+3"), en_US, SV("{:$>14.6LA}"), F(0x1.23456p3));
+  test(SV("$1.234560P+3$$"), en_US, SV("{:$^14.6LA}"), F(0x1.23456p3));
+  test(SV("0001.234560P+3"), en_US, SV("{:014.6LA}"), F(0x1.23456p3));
+  test(SV("-1.234560P+3$$$"), en_US, SV("{:$<15.6LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1.234560P+3"), en_US, SV("{:$>15.6LA}"), F(-0x1.23456p3));
+  test(SV("$-1.234560P+3$$"), en_US, SV("{:$^15.6LA}"), F(-0x1.23456p3));
+  test(SV("-0001.234560P+3"), en_US, SV("{:015.6LA}"), F(-0x1.23456p3));
+
+  std::locale::global(en_US);
+  test(SV("1#234560P+3$$$"), loc, SV("{:$<14.6LA}"), F(0x1.23456p3));
+  test(SV("$$$1#234560P+3"), loc, SV("{:$>14.6LA}"), F(0x1.23456p3));
+  test(SV("$1#234560P+3$$"), loc, SV("{:$^14.6LA}"), F(0x1.23456p3));
+  test(SV("0001#234560P+3"), loc, SV("{:014.6LA}"), F(0x1.23456p3));
+  test(SV("-1#234560P+3$$$"), loc, SV("{:$<15.6LA}"), F(-0x1.23456p3));
+  test(SV("$$$-1#234560P+3"), loc, SV("{:$>15.6LA}"), F(-0x1.23456p3));
+  test(SV("$-1#234560P+3$$"), loc, SV("{:$^15.6LA}"), F(-0x1.23456p3));
+  test(SV("-0001#234560P+3"), loc, SV("{:015.6LA}"), F(-0x1.23456p3));
+}
+
+template <class F, class CharT>
+void test_floating_point_scientific_lower_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.234567e-03"), SV("{:.6Le}"), F(1.234567e-3));
+  test(SV("1.234567e-02"), SV("{:.6Le}"), F(1.234567e-2));
+  test(SV("1.234567e-01"), SV("{:.6Le}"), F(1.234567e-1));
+  test(SV("1.234567e+00"), SV("{:.6Le}"), F(1.234567e0));
+  test(SV("1.234567e+01"), SV("{:.6Le}"), F(1.234567e1));
+  test(SV("1.234567e+02"), SV("{:.6Le}"), F(1.234567e2));
+  test(SV("1.234567e+03"), SV("{:.6Le}"), F(1.234567e3));
+  test(SV("1.234567e+20"), SV("{:.6Le}"), F(1.234567e20));
+  test(SV("-1.234567e-03"), SV("{:.6Le}"), F(-1.234567e-3));
+  test(SV("-1.234567e-02"), SV("{:.6Le}"), F(-1.234567e-2));
+  test(SV("-1.234567e-01"), SV("{:.6Le}"), F(-1.234567e-1));
+  test(SV("-1.234567e+00"), SV("{:.6Le}"), F(-1.234567e0));
+  test(SV("-1.234567e+01"), SV("{:.6Le}"), F(-1.234567e1));
+  test(SV("-1.234567e+02"), SV("{:.6Le}"), F(-1.234567e2));
+  test(SV("-1.234567e+03"), SV("{:.6Le}"), F(-1.234567e3));
+  test(SV("-1.234567e+20"), SV("{:.6Le}"), F(-1.234567e20));
+
+  std::locale::global(loc);
+  test(SV("1#234567e-03"), SV("{:.6Le}"), F(1.234567e-3));
+  test(SV("1#234567e-02"), SV("{:.6Le}"), F(1.234567e-2));
+  test(SV("1#234567e-01"), SV("{:.6Le}"), F(1.234567e-1));
+  test(SV("1#234567e+00"), SV("{:.6Le}"), F(1.234567e0));
+  test(SV("1#234567e+01"), SV("{:.6Le}"), F(1.234567e1));
+  test(SV("1#234567e+02"), SV("{:.6Le}"), F(1.234567e2));
+  test(SV("1#234567e+03"), SV("{:.6Le}"), F(1.234567e3));
+  test(SV("1#234567e+20"), SV("{:.6Le}"), F(1.234567e20));
+  test(SV("-1#234567e-03"), SV("{:.6Le}"), F(-1.234567e-3));
+  test(SV("-1#234567e-02"), SV("{:.6Le}"), F(-1.234567e-2));
+  test(SV("-1#234567e-01"), SV("{:.6Le}"), F(-1.234567e-1));
+  test(SV("-1#234567e+00"), SV("{:.6Le}"), F(-1.234567e0));
+  test(SV("-1#234567e+01"), SV("{:.6Le}"), F(-1.234567e1));
+  test(SV("-1#234567e+02"), SV("{:.6Le}"), F(-1.234567e2));
+  test(SV("-1#234567e+03"), SV("{:.6Le}"), F(-1.234567e3));
+  test(SV("-1#234567e+20"), SV("{:.6Le}"), F(-1.234567e20));
+
+  test(SV("1.234567e-03"), en_US, SV("{:.6Le}"), F(1.234567e-3));
+  test(SV("1.234567e-02"), en_US, SV("{:.6Le}"), F(1.234567e-2));
+  test(SV("1.234567e-01"), en_US, SV("{:.6Le}"), F(1.234567e-1));
+  test(SV("1.234567e+00"), en_US, SV("{:.6Le}"), F(1.234567e0));
+  test(SV("1.234567e+01"), en_US, SV("{:.6Le}"), F(1.234567e1));
+  test(SV("1.234567e+02"), en_US, SV("{:.6Le}"), F(1.234567e2));
+  test(SV("1.234567e+03"), en_US, SV("{:.6Le}"), F(1.234567e3));
+  test(SV("1.234567e+20"), en_US, SV("{:.6Le}"), F(1.234567e20));
+  test(SV("-1.234567e-03"), en_US, SV("{:.6Le}"), F(-1.234567e-3));
+  test(SV("-1.234567e-02"), en_US, SV("{:.6Le}"), F(-1.234567e-2));
+  test(SV("-1.234567e-01"), en_US, SV("{:.6Le}"), F(-1.234567e-1));
+  test(SV("-1.234567e+00"), en_US, SV("{:.6Le}"), F(-1.234567e0));
+  test(SV("-1.234567e+01"), en_US, SV("{:.6Le}"), F(-1.234567e1));
+  test(SV("-1.234567e+02"), en_US, SV("{:.6Le}"), F(-1.234567e2));
+  test(SV("-1.234567e+03"), en_US, SV("{:.6Le}"), F(-1.234567e3));
+  test(SV("-1.234567e+20"), en_US, SV("{:.6Le}"), F(-1.234567e20));
+
+  std::locale::global(en_US);
+  test(SV("1#234567e-03"), loc, SV("{:.6Le}"), F(1.234567e-3));
+  test(SV("1#234567e-02"), loc, SV("{:.6Le}"), F(1.234567e-2));
+  test(SV("1#234567e-01"), loc, SV("{:.6Le}"), F(1.234567e-1));
+  test(SV("1#234567e+00"), loc, SV("{:.6Le}"), F(1.234567e0));
+  test(SV("1#234567e+01"), loc, SV("{:.6Le}"), F(1.234567e1));
+  test(SV("1#234567e+02"), loc, SV("{:.6Le}"), F(1.234567e2));
+  test(SV("1#234567e+03"), loc, SV("{:.6Le}"), F(1.234567e3));
+  test(SV("1#234567e+20"), loc, SV("{:.6Le}"), F(1.234567e20));
+  test(SV("-1#234567e-03"), loc, SV("{:.6Le}"), F(-1.234567e-3));
+  test(SV("-1#234567e-02"), loc, SV("{:.6Le}"), F(-1.234567e-2));
+  test(SV("-1#234567e-01"), loc, SV("{:.6Le}"), F(-1.234567e-1));
+  test(SV("-1#234567e+00"), loc, SV("{:.6Le}"), F(-1.234567e0));
+  test(SV("-1#234567e+01"), loc, SV("{:.6Le}"), F(-1.234567e1));
+  test(SV("-1#234567e+02"), loc, SV("{:.6Le}"), F(-1.234567e2));
+  test(SV("-1#234567e+03"), loc, SV("{:.6Le}"), F(-1.234567e3));
+  test(SV("-1#234567e+20"), loc, SV("{:.6Le}"), F(-1.234567e20));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1.234567e+03$$$"), SV("{:$<15.6Le}"), F(1.234567e3));
+  test(SV("$$$1.234567e+03"), SV("{:$>15.6Le}"), F(1.234567e3));
+  test(SV("$1.234567e+03$$"), SV("{:$^15.6Le}"), F(1.234567e3));
+  test(SV("0001.234567e+03"), SV("{:015.6Le}"), F(1.234567e3));
+  test(SV("-1.234567e+03$$$"), SV("{:$<16.6Le}"), F(-1.234567e3));
+  test(SV("$$$-1.234567e+03"), SV("{:$>16.6Le}"), F(-1.234567e3));
+  test(SV("$-1.234567e+03$$"), SV("{:$^16.6Le}"), F(-1.234567e3));
+  test(SV("-0001.234567e+03"), SV("{:016.6Le}"), F(-1.234567e3));
+
+  std::locale::global(loc);
+  test(SV("1#234567e+03$$$"), SV("{:$<15.6Le}"), F(1.234567e3));
+  test(SV("$$$1#234567e+03"), SV("{:$>15.6Le}"), F(1.234567e3));
+  test(SV("$1#234567e+03$$"), SV("{:$^15.6Le}"), F(1.234567e3));
+  test(SV("0001#234567e+03"), SV("{:015.6Le}"), F(1.234567e3));
+  test(SV("-1#234567e+03$$$"), SV("{:$<16.6Le}"), F(-1.234567e3));
+  test(SV("$$$-1#234567e+03"), SV("{:$>16.6Le}"), F(-1.234567e3));
+  test(SV("$-1#234567e+03$$"), SV("{:$^16.6Le}"), F(-1.234567e3));
+  test(SV("-0001#234567e+03"), SV("{:016.6Le}"), F(-1.234567e3));
+
+  test(SV("1.234567e+03$$$"), en_US, SV("{:$<15.6Le}"), F(1.234567e3));
+  test(SV("$$$1.234567e+03"), en_US, SV("{:$>15.6Le}"), F(1.234567e3));
+  test(SV("$1.234567e+03$$"), en_US, SV("{:$^15.6Le}"), F(1.234567e3));
+  test(SV("0001.234567e+03"), en_US, SV("{:015.6Le}"), F(1.234567e3));
+  test(SV("-1.234567e+03$$$"), en_US, SV("{:$<16.6Le}"), F(-1.234567e3));
+  test(SV("$$$-1.234567e+03"), en_US, SV("{:$>16.6Le}"), F(-1.234567e3));
+  test(SV("$-1.234567e+03$$"), en_US, SV("{:$^16.6Le}"), F(-1.234567e3));
+  test(SV("-0001.234567e+03"), en_US, SV("{:016.6Le}"), F(-1.234567e3));
+
+  std::locale::global(en_US);
+  test(SV("1#234567e+03$$$"), loc, SV("{:$<15.6Le}"), F(1.234567e3));
+  test(SV("$$$1#234567e+03"), loc, SV("{:$>15.6Le}"), F(1.234567e3));
+  test(SV("$1#234567e+03$$"), loc, SV("{:$^15.6Le}"), F(1.234567e3));
+  test(SV("0001#234567e+03"), loc, SV("{:015.6Le}"), F(1.234567e3));
+  test(SV("-1#234567e+03$$$"), loc, SV("{:$<16.6Le}"), F(-1.234567e3));
+  test(SV("$$$-1#234567e+03"), loc, SV("{:$>16.6Le}"), F(-1.234567e3));
+  test(SV("$-1#234567e+03$$"), loc, SV("{:$^16.6Le}"), F(-1.234567e3));
+  test(SV("-0001#234567e+03"), loc, SV("{:016.6Le}"), F(-1.234567e3));
+}
+
+template <class F, class CharT>
+void test_floating_point_scientific_upper_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.234567E-03"), SV("{:.6LE}"), F(1.234567e-3));
+  test(SV("1.234567E-02"), SV("{:.6LE}"), F(1.234567e-2));
+  test(SV("1.234567E-01"), SV("{:.6LE}"), F(1.234567e-1));
+  test(SV("1.234567E+00"), SV("{:.6LE}"), F(1.234567e0));
+  test(SV("1.234567E+01"), SV("{:.6LE}"), F(1.234567e1));
+  test(SV("1.234567E+02"), SV("{:.6LE}"), F(1.234567e2));
+  test(SV("1.234567E+03"), SV("{:.6LE}"), F(1.234567e3));
+  test(SV("1.234567E+20"), SV("{:.6LE}"), F(1.234567e20));
+  test(SV("-1.234567E-03"), SV("{:.6LE}"), F(-1.234567e-3));
+  test(SV("-1.234567E-02"), SV("{:.6LE}"), F(-1.234567e-2));
+  test(SV("-1.234567E-01"), SV("{:.6LE}"), F(-1.234567e-1));
+  test(SV("-1.234567E+00"), SV("{:.6LE}"), F(-1.234567e0));
+  test(SV("-1.234567E+01"), SV("{:.6LE}"), F(-1.234567e1));
+  test(SV("-1.234567E+02"), SV("{:.6LE}"), F(-1.234567e2));
+  test(SV("-1.234567E+03"), SV("{:.6LE}"), F(-1.234567e3));
+  test(SV("-1.234567E+20"), SV("{:.6LE}"), F(-1.234567e20));
+
+  std::locale::global(loc);
+  test(SV("1#234567E-03"), SV("{:.6LE}"), F(1.234567e-3));
+  test(SV("1#234567E-02"), SV("{:.6LE}"), F(1.234567e-2));
+  test(SV("1#234567E-01"), SV("{:.6LE}"), F(1.234567e-1));
+  test(SV("1#234567E+00"), SV("{:.6LE}"), F(1.234567e0));
+  test(SV("1#234567E+01"), SV("{:.6LE}"), F(1.234567e1));
+  test(SV("1#234567E+02"), SV("{:.6LE}"), F(1.234567e2));
+  test(SV("1#234567E+03"), SV("{:.6LE}"), F(1.234567e3));
+  test(SV("1#234567E+20"), SV("{:.6LE}"), F(1.234567e20));
+  test(SV("-1#234567E-03"), SV("{:.6LE}"), F(-1.234567e-3));
+  test(SV("-1#234567E-02"), SV("{:.6LE}"), F(-1.234567e-2));
+  test(SV("-1#234567E-01"), SV("{:.6LE}"), F(-1.234567e-1));
+  test(SV("-1#234567E+00"), SV("{:.6LE}"), F(-1.234567e0));
+  test(SV("-1#234567E+01"), SV("{:.6LE}"), F(-1.234567e1));
+  test(SV("-1#234567E+02"), SV("{:.6LE}"), F(-1.234567e2));
+  test(SV("-1#234567E+03"), SV("{:.6LE}"), F(-1.234567e3));
+  test(SV("-1#234567E+20"), SV("{:.6LE}"), F(-1.234567e20));
+
+  test(SV("1.234567E-03"), en_US, SV("{:.6LE}"), F(1.234567e-3));
+  test(SV("1.234567E-02"), en_US, SV("{:.6LE}"), F(1.234567e-2));
+  test(SV("1.234567E-01"), en_US, SV("{:.6LE}"), F(1.234567e-1));
+  test(SV("1.234567E+00"), en_US, SV("{:.6LE}"), F(1.234567e0));
+  test(SV("1.234567E+01"), en_US, SV("{:.6LE}"), F(1.234567e1));
+  test(SV("1.234567E+02"), en_US, SV("{:.6LE}"), F(1.234567e2));
+  test(SV("1.234567E+03"), en_US, SV("{:.6LE}"), F(1.234567e3));
+  test(SV("1.234567E+20"), en_US, SV("{:.6LE}"), F(1.234567e20));
+  test(SV("-1.234567E-03"), en_US, SV("{:.6LE}"), F(-1.234567e-3));
+  test(SV("-1.234567E-02"), en_US, SV("{:.6LE}"), F(-1.234567e-2));
+  test(SV("-1.234567E-01"), en_US, SV("{:.6LE}"), F(-1.234567e-1));
+  test(SV("-1.234567E+00"), en_US, SV("{:.6LE}"), F(-1.234567e0));
+  test(SV("-1.234567E+01"), en_US, SV("{:.6LE}"), F(-1.234567e1));
+  test(SV("-1.234567E+02"), en_US, SV("{:.6LE}"), F(-1.234567e2));
+  test(SV("-1.234567E+03"), en_US, SV("{:.6LE}"), F(-1.234567e3));
+  test(SV("-1.234567E+20"), en_US, SV("{:.6LE}"), F(-1.234567e20));
+
+  std::locale::global(en_US);
+  test(SV("1#234567E-03"), loc, SV("{:.6LE}"), F(1.234567e-3));
+  test(SV("1#234567E-02"), loc, SV("{:.6LE}"), F(1.234567e-2));
+  test(SV("1#234567E-01"), loc, SV("{:.6LE}"), F(1.234567e-1));
+  test(SV("1#234567E+00"), loc, SV("{:.6LE}"), F(1.234567e0));
+  test(SV("1#234567E+01"), loc, SV("{:.6LE}"), F(1.234567e1));
+  test(SV("1#234567E+02"), loc, SV("{:.6LE}"), F(1.234567e2));
+  test(SV("1#234567E+03"), loc, SV("{:.6LE}"), F(1.234567e3));
+  test(SV("1#234567E+20"), loc, SV("{:.6LE}"), F(1.234567e20));
+  test(SV("-1#234567E-03"), loc, SV("{:.6LE}"), F(-1.234567e-3));
+  test(SV("-1#234567E-02"), loc, SV("{:.6LE}"), F(-1.234567e-2));
+  test(SV("-1#234567E-01"), loc, SV("{:.6LE}"), F(-1.234567e-1));
+  test(SV("-1#234567E+00"), loc, SV("{:.6LE}"), F(-1.234567e0));
+  test(SV("-1#234567E+01"), loc, SV("{:.6LE}"), F(-1.234567e1));
+  test(SV("-1#234567E+02"), loc, SV("{:.6LE}"), F(-1.234567e2));
+  test(SV("-1#234567E+03"), loc, SV("{:.6LE}"), F(-1.234567e3));
+  test(SV("-1#234567E+20"), loc, SV("{:.6LE}"), F(-1.234567e20));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1.234567E+03$$$"), SV("{:$<15.6LE}"), F(1.234567e3));
+  test(SV("$$$1.234567E+03"), SV("{:$>15.6LE}"), F(1.234567e3));
+  test(SV("$1.234567E+03$$"), SV("{:$^15.6LE}"), F(1.234567e3));
+  test(SV("0001.234567E+03"), SV("{:015.6LE}"), F(1.234567e3));
+  test(SV("-1.234567E+03$$$"), SV("{:$<16.6LE}"), F(-1.234567e3));
+  test(SV("$$$-1.234567E+03"), SV("{:$>16.6LE}"), F(-1.234567e3));
+  test(SV("$-1.234567E+03$$"), SV("{:$^16.6LE}"), F(-1.234567e3));
+  test(SV("-0001.234567E+03"), SV("{:016.6LE}"), F(-1.234567e3));
+
+  std::locale::global(loc);
+  test(SV("1#234567E+03$$$"), SV("{:$<15.6LE}"), F(1.234567e3));
+  test(SV("$$$1#234567E+03"), SV("{:$>15.6LE}"), F(1.234567e3));
+  test(SV("$1#234567E+03$$"), SV("{:$^15.6LE}"), F(1.234567e3));
+  test(SV("0001#234567E+03"), SV("{:015.6LE}"), F(1.234567e3));
+  test(SV("-1#234567E+03$$$"), SV("{:$<16.6LE}"), F(-1.234567e3));
+  test(SV("$$$-1#234567E+03"), SV("{:$>16.6LE}"), F(-1.234567e3));
+  test(SV("$-1#234567E+03$$"), SV("{:$^16.6LE}"), F(-1.234567e3));
+  test(SV("-0001#234567E+03"), SV("{:016.6LE}"), F(-1.234567e3));
+
+  test(SV("1.234567E+03$$$"), en_US, SV("{:$<15.6LE}"), F(1.234567e3));
+  test(SV("$$$1.234567E+03"), en_US, SV("{:$>15.6LE}"), F(1.234567e3));
+  test(SV("$1.234567E+03$$"), en_US, SV("{:$^15.6LE}"), F(1.234567e3));
+  test(SV("0001.234567E+03"), en_US, SV("{:015.6LE}"), F(1.234567e3));
+  test(SV("-1.234567E+03$$$"), en_US, SV("{:$<16.6LE}"), F(-1.234567e3));
+  test(SV("$$$-1.234567E+03"), en_US, SV("{:$>16.6LE}"), F(-1.234567e3));
+  test(SV("$-1.234567E+03$$"), en_US, SV("{:$^16.6LE}"), F(-1.234567e3));
+  test(SV("-0001.234567E+03"), en_US, SV("{:016.6LE}"), F(-1.234567e3));
+
+  std::locale::global(en_US);
+  test(SV("1#234567E+03$$$"), loc, SV("{:$<15.6LE}"), F(1.234567e3));
+  test(SV("$$$1#234567E+03"), loc, SV("{:$>15.6LE}"), F(1.234567e3));
+  test(SV("$1#234567E+03$$"), loc, SV("{:$^15.6LE}"), F(1.234567e3));
+  test(SV("0001#234567E+03"), loc, SV("{:015.6LE}"), F(1.234567e3));
+  test(SV("-1#234567E+03$$$"), loc, SV("{:$<16.6LE}"), F(-1.234567e3));
+  test(SV("$$$-1#234567E+03"), loc, SV("{:$>16.6LE}"), F(-1.234567e3));
+  test(SV("$-1#234567E+03$$"), loc, SV("{:$^16.6LE}"), F(-1.234567e3));
+  test(SV("-0001#234567E+03"), loc, SV("{:016.6LE}"), F(-1.234567e3));
+}
+
+template <class F, class CharT>
+void test_floating_point_fixed_lower_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("0.000001"), SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0.000012"), SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0.000123"), SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0.001235"), SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0.012346"), SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0.123457"), SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1.234567"), SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("12.345670"), SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("123.456700"), SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1,234.567000"), SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12,345.670000"), SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123,456.700000"), SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1,234,567.000000"), SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12,345,670.000000"), SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("123,456,700,000,000,000,000.000000"), SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0.000001"), SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0.000012"), SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0.000123"), SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0.001235"), SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0.012346"), SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0.123457"), SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1.234567"), SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-12.345670"), SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-123.456700"), SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1,234.567000"), SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12,345.670000"), SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123,456.700000"), SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1,234,567.000000"), SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12,345,670.000000"), SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-123,456,700,000,000,000,000.000000"), SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  std::locale::global(loc);
+  test(SV("0#000001"), SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0#000012"), SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0#000123"), SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0#001235"), SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0#012346"), SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0#123457"), SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1#234567"), SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("1_2#345670"), SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("12_3#456700"), SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1_23_4#567000"), SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12_34_5#670000"), SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123_45_6#700000"), SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1_234_56_7#000000"), SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12_345_67_0#000000"), SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0#000001"), SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0#000012"), SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0#000123"), SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0#001235"), SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0#012346"), SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0#123457"), SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1#234567"), SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-1_2#345670"), SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-12_3#456700"), SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1_23_4#567000"), SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12_34_5#670000"), SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123_45_6#700000"), SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1_234_56_7#000000"), SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12_345_67_0#000000"), SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  test(SV("0.000001"), en_US, SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0.000012"), en_US, SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0.000123"), en_US, SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0.001235"), en_US, SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0.012346"), en_US, SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0.123457"), en_US, SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1.234567"), en_US, SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("12.345670"), en_US, SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("123.456700"), en_US, SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1,234.567000"), en_US, SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12,345.670000"), en_US, SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123,456.700000"), en_US, SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1,234,567.000000"), en_US, SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12,345,670.000000"), en_US, SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("123,456,700,000,000,000,000.000000"), en_US, SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0.000001"), en_US, SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0.000012"), en_US, SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0.000123"), en_US, SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0.001235"), en_US, SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0.012346"), en_US, SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0.123457"), en_US, SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1.234567"), en_US, SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-12.345670"), en_US, SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-123.456700"), en_US, SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1,234.567000"), en_US, SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12,345.670000"), en_US, SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123,456.700000"), en_US, SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1,234,567.000000"), en_US, SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12,345,670.000000"), en_US, SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-123,456,700,000,000,000,000.000000"), en_US, SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  std::locale::global(en_US);
+  test(SV("0#000001"), loc, SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0#000012"), loc, SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0#000123"), loc, SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0#001235"), loc, SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0#012346"), loc, SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0#123457"), loc, SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1#234567"), loc, SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("1_2#345670"), loc, SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("12_3#456700"), loc, SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1_23_4#567000"), loc, SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12_34_5#670000"), loc, SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123_45_6#700000"), loc, SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1_234_56_7#000000"), loc, SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12_345_67_0#000000"), loc, SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), loc, SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0#000001"), loc, SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0#000012"), loc, SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0#000123"), loc, SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0#001235"), loc, SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0#012346"), loc, SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0#123457"), loc, SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1#234567"), loc, SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-1_2#345670"), loc, SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-12_3#456700"), loc, SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1_23_4#567000"), loc, SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12_34_5#670000"), loc, SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123_45_6#700000"), loc, SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1_234_56_7#000000"), loc, SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12_345_67_0#000000"), loc, SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), loc, SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  // *** Fill, align, zero padding ***
+  if constexpr (sizeof(F) > sizeof(float)) {
+    std::locale::global(en_US);
+    test(SV("1,234.567000$$$"), SV("{:$<15.6Lf}"), F(1.234567e3));
+    test(SV("$$$1,234.567000"), SV("{:$>15.6Lf}"), F(1.234567e3));
+    test(SV("$1,234.567000$$"), SV("{:$^15.6Lf}"), F(1.234567e3));
+    test(SV("0001,234.567000"), SV("{:015.6Lf}"), F(1.234567e3));
+    test(SV("-1,234.567000$$$"), SV("{:$<16.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1,234.567000"), SV("{:$>16.6Lf}"), F(-1.234567e3));
+    test(SV("$-1,234.567000$$"), SV("{:$^16.6Lf}"), F(-1.234567e3));
+    test(SV("-0001,234.567000"), SV("{:016.6Lf}"), F(-1.234567e3));
+
+    std::locale::global(loc);
+    test(SV("1_23_4#567000$$$"), SV("{:$<16.6Lf}"), F(1.234567e3));
+    test(SV("$$$1_23_4#567000"), SV("{:$>16.6Lf}"), F(1.234567e3));
+    test(SV("$1_23_4#567000$$"), SV("{:$^16.6Lf}"), F(1.234567e3));
+    test(SV("0001_23_4#567000"), SV("{:016.6Lf}"), F(1.234567e3));
+    test(SV("-1_23_4#567000$$$"), SV("{:$<17.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1_23_4#567000"), SV("{:$>17.6Lf}"), F(-1.234567e3));
+    test(SV("$-1_23_4#567000$$"), SV("{:$^17.6Lf}"), F(-1.234567e3));
+    test(SV("-0001_23_4#567000"), SV("{:017.6Lf}"), F(-1.234567e3));
+
+    test(SV("1,234.567000$$$"), en_US, SV("{:$<15.6Lf}"), F(1.234567e3));
+    test(SV("$$$1,234.567000"), en_US, SV("{:$>15.6Lf}"), F(1.234567e3));
+    test(SV("$1,234.567000$$"), en_US, SV("{:$^15.6Lf}"), F(1.234567e3));
+    test(SV("0001,234.567000"), en_US, SV("{:015.6Lf}"), F(1.234567e3));
+    test(SV("-1,234.567000$$$"), en_US, SV("{:$<16.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1,234.567000"), en_US, SV("{:$>16.6Lf}"), F(-1.234567e3));
+    test(SV("$-1,234.567000$$"), en_US, SV("{:$^16.6Lf}"), F(-1.234567e3));
+    test(SV("-0001,234.567000"), en_US, SV("{:016.6Lf}"), F(-1.234567e3));
+
+    std::locale::global(en_US);
+    test(SV("1_23_4#567000$$$"), loc, SV("{:$<16.6Lf}"), F(1.234567e3));
+    test(SV("$$$1_23_4#567000"), loc, SV("{:$>16.6Lf}"), F(1.234567e3));
+    test(SV("$1_23_4#567000$$"), loc, SV("{:$^16.6Lf}"), F(1.234567e3));
+    test(SV("0001_23_4#567000"), loc, SV("{:016.6Lf}"), F(1.234567e3));
+    test(SV("-1_23_4#567000$$$"), loc, SV("{:$<17.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1_23_4#567000"), loc, SV("{:$>17.6Lf}"), F(-1.234567e3));
+    test(SV("$-1_23_4#567000$$"), loc, SV("{:$^17.6Lf}"), F(-1.234567e3));
+    test(SV("-0001_23_4#567000"), loc, SV("{:017.6Lf}"), F(-1.234567e3));
+  }
+}
+
+template <class F, class CharT>
+void test_floating_point_fixed_upper_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("0.000001"), SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0.000012"), SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0.000123"), SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0.001235"), SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0.012346"), SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0.123457"), SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1.234567"), SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("12.345670"), SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("123.456700"), SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1,234.567000"), SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12,345.670000"), SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123,456.700000"), SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1,234,567.000000"), SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12,345,670.000000"), SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("123,456,700,000,000,000,000.000000"), SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0.000001"), SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0.000012"), SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0.000123"), SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0.001235"), SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0.012346"), SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0.123457"), SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1.234567"), SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-12.345670"), SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-123.456700"), SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1,234.567000"), SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12,345.670000"), SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123,456.700000"), SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1,234,567.000000"), SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12,345,670.000000"), SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-123,456,700,000,000,000,000.000000"), SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  std::locale::global(loc);
+  test(SV("0#000001"), SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0#000012"), SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0#000123"), SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0#001235"), SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0#012346"), SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0#123457"), SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1#234567"), SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("1_2#345670"), SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("12_3#456700"), SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1_23_4#567000"), SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12_34_5#670000"), SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123_45_6#700000"), SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1_234_56_7#000000"), SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12_345_67_0#000000"), SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0#000001"), SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0#000012"), SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0#000123"), SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0#001235"), SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0#012346"), SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0#123457"), SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1#234567"), SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-1_2#345670"), SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-12_3#456700"), SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1_23_4#567000"), SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12_34_5#670000"), SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123_45_6#700000"), SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1_234_56_7#000000"), SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12_345_67_0#000000"), SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  test(SV("0.000001"), en_US, SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0.000012"), en_US, SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0.000123"), en_US, SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0.001235"), en_US, SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0.012346"), en_US, SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0.123457"), en_US, SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1.234567"), en_US, SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("12.345670"), en_US, SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("123.456700"), en_US, SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1,234.567000"), en_US, SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12,345.670000"), en_US, SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123,456.700000"), en_US, SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1,234,567.000000"), en_US, SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12,345,670.000000"), en_US, SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("123,456,700,000,000,000,000.000000"), en_US, SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0.000001"), en_US, SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0.000012"), en_US, SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0.000123"), en_US, SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0.001235"), en_US, SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0.012346"), en_US, SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0.123457"), en_US, SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1.234567"), en_US, SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-12.345670"), en_US, SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-123.456700"), en_US, SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1,234.567000"), en_US, SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12,345.670000"), en_US, SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123,456.700000"), en_US, SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1,234,567.000000"), en_US, SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12,345,670.000000"), en_US, SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-123,456,700,000,000,000,000.000000"), en_US, SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  std::locale::global(en_US);
+  test(SV("0#000001"), loc, SV("{:.6Lf}"), F(1.234567e-6));
+  test(SV("0#000012"), loc, SV("{:.6Lf}"), F(1.234567e-5));
+  test(SV("0#000123"), loc, SV("{:.6Lf}"), F(1.234567e-4));
+  test(SV("0#001235"), loc, SV("{:.6Lf}"), F(1.234567e-3));
+  test(SV("0#012346"), loc, SV("{:.6Lf}"), F(1.234567e-2));
+  test(SV("0#123457"), loc, SV("{:.6Lf}"), F(1.234567e-1));
+  test(SV("1#234567"), loc, SV("{:.6Lf}"), F(1.234567e0));
+  test(SV("1_2#345670"), loc, SV("{:.6Lf}"), F(1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("12_3#456700"), loc, SV("{:.6Lf}"), F(1.234567e2));
+    test(SV("1_23_4#567000"), loc, SV("{:.6Lf}"), F(1.234567e3));
+    test(SV("12_34_5#670000"), loc, SV("{:.6Lf}"), F(1.234567e4));
+    test(SV("123_45_6#700000"), loc, SV("{:.6Lf}"), F(1.234567e5));
+    test(SV("1_234_56_7#000000"), loc, SV("{:.6Lf}"), F(1.234567e6));
+    test(SV("12_345_67_0#000000"), loc, SV("{:.6Lf}"), F(1.234567e7));
+    test(SV("1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), loc, SV("{:.6Lf}"), F(1.234567e20));
+  }
+  test(SV("-0#000001"), loc, SV("{:.6Lf}"), F(-1.234567e-6));
+  test(SV("-0#000012"), loc, SV("{:.6Lf}"), F(-1.234567e-5));
+  test(SV("-0#000123"), loc, SV("{:.6Lf}"), F(-1.234567e-4));
+  test(SV("-0#001235"), loc, SV("{:.6Lf}"), F(-1.234567e-3));
+  test(SV("-0#012346"), loc, SV("{:.6Lf}"), F(-1.234567e-2));
+  test(SV("-0#123457"), loc, SV("{:.6Lf}"), F(-1.234567e-1));
+  test(SV("-1#234567"), loc, SV("{:.6Lf}"), F(-1.234567e0));
+  test(SV("-1_2#345670"), loc, SV("{:.6Lf}"), F(-1.234567e1));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-12_3#456700"), loc, SV("{:.6Lf}"), F(-1.234567e2));
+    test(SV("-1_23_4#567000"), loc, SV("{:.6Lf}"), F(-1.234567e3));
+    test(SV("-12_34_5#670000"), loc, SV("{:.6Lf}"), F(-1.234567e4));
+    test(SV("-123_45_6#700000"), loc, SV("{:.6Lf}"), F(-1.234567e5));
+    test(SV("-1_234_56_7#000000"), loc, SV("{:.6Lf}"), F(-1.234567e6));
+    test(SV("-12_345_67_0#000000"), loc, SV("{:.6Lf}"), F(-1.234567e7));
+    test(SV("-1_2_3_4_5_6_7_0_0_0_0_0_0_00_000_00_0#000000"), loc, SV("{:.6Lf}"), F(-1.234567e20));
+  }
+
+  // *** Fill, align, zero padding ***
+  if constexpr (sizeof(F) > sizeof(float)) {
+    std::locale::global(en_US);
+    test(SV("1,234.567000$$$"), SV("{:$<15.6Lf}"), F(1.234567e3));
+    test(SV("$$$1,234.567000"), SV("{:$>15.6Lf}"), F(1.234567e3));
+    test(SV("$1,234.567000$$"), SV("{:$^15.6Lf}"), F(1.234567e3));
+    test(SV("0001,234.567000"), SV("{:015.6Lf}"), F(1.234567e3));
+    test(SV("-1,234.567000$$$"), SV("{:$<16.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1,234.567000"), SV("{:$>16.6Lf}"), F(-1.234567e3));
+    test(SV("$-1,234.567000$$"), SV("{:$^16.6Lf}"), F(-1.234567e3));
+    test(SV("-0001,234.567000"), SV("{:016.6Lf}"), F(-1.234567e3));
+
+    std::locale::global(loc);
+    test(SV("1_23_4#567000$$$"), SV("{:$<16.6Lf}"), F(1.234567e3));
+    test(SV("$$$1_23_4#567000"), SV("{:$>16.6Lf}"), F(1.234567e3));
+    test(SV("$1_23_4#567000$$"), SV("{:$^16.6Lf}"), F(1.234567e3));
+    test(SV("0001_23_4#567000"), SV("{:016.6Lf}"), F(1.234567e3));
+    test(SV("-1_23_4#567000$$$"), SV("{:$<17.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1_23_4#567000"), SV("{:$>17.6Lf}"), F(-1.234567e3));
+    test(SV("$-1_23_4#567000$$"), SV("{:$^17.6Lf}"), F(-1.234567e3));
+    test(SV("-0001_23_4#567000"), SV("{:017.6Lf}"), F(-1.234567e3));
+
+    test(SV("1,234.567000$$$"), en_US, SV("{:$<15.6Lf}"), F(1.234567e3));
+    test(SV("$$$1,234.567000"), en_US, SV("{:$>15.6Lf}"), F(1.234567e3));
+    test(SV("$1,234.567000$$"), en_US, SV("{:$^15.6Lf}"), F(1.234567e3));
+    test(SV("0001,234.567000"), en_US, SV("{:015.6Lf}"), F(1.234567e3));
+    test(SV("-1,234.567000$$$"), en_US, SV("{:$<16.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1,234.567000"), en_US, SV("{:$>16.6Lf}"), F(-1.234567e3));
+    test(SV("$-1,234.567000$$"), en_US, SV("{:$^16.6Lf}"), F(-1.234567e3));
+    test(SV("-0001,234.567000"), en_US, SV("{:016.6Lf}"), F(-1.234567e3));
+
+    std::locale::global(en_US);
+    test(SV("1_23_4#567000$$$"), loc, SV("{:$<16.6Lf}"), F(1.234567e3));
+    test(SV("$$$1_23_4#567000"), loc, SV("{:$>16.6Lf}"), F(1.234567e3));
+    test(SV("$1_23_4#567000$$"), loc, SV("{:$^16.6Lf}"), F(1.234567e3));
+    test(SV("0001_23_4#567000"), loc, SV("{:016.6Lf}"), F(1.234567e3));
+    test(SV("-1_23_4#567000$$$"), loc, SV("{:$<17.6Lf}"), F(-1.234567e3));
+    test(SV("$$$-1_23_4#567000"), loc, SV("{:$>17.6Lf}"), F(-1.234567e3));
+    test(SV("$-1_23_4#567000$$"), loc, SV("{:$^17.6Lf}"), F(-1.234567e3));
+    test(SV("-0001_23_4#567000"), loc, SV("{:017.6Lf}"), F(-1.234567e3));
+  }
+}
+
+template <class F, class CharT>
+void test_floating_point_general_lower_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.23457e-06"), SV("{:.6Lg}"), F(1.234567e-6));
+  test(SV("1.23457e-05"), SV("{:.6Lg}"), F(1.234567e-5));
+  test(SV("0.000123457"), SV("{:.6Lg}"), F(1.234567e-4));
+  test(SV("0.00123457"), SV("{:.6Lg}"), F(1.234567e-3));
+  test(SV("0.0123457"), SV("{:.6Lg}"), F(1.234567e-2));
+  test(SV("0.123457"), SV("{:.6Lg}"), F(1.234567e-1));
+  test(SV("1.23457"), SV("{:.6Lg}"), F(1.234567e0));
+  test(SV("12.3457"), SV("{:.6Lg}"), F(1.234567e1));
+  test(SV("123.457"), SV("{:.6Lg}"), F(1.234567e2));
+  test(SV("1,234.57"), SV("{:.6Lg}"), F(1.234567e3));
+  test(SV("12,345.7"), SV("{:.6Lg}"), F(1.234567e4));
+  test(SV("123,457"), SV("{:.6Lg}"), F(1.234567e5));
+  test(SV("1.23457e+06"), SV("{:.6Lg}"), F(1.234567e6));
+  test(SV("1.23457e+07"), SV("{:.6Lg}"), F(1.234567e7));
+  test(SV("-1.23457e-06"), SV("{:.6Lg}"), F(-1.234567e-6));
+  test(SV("-1.23457e-05"), SV("{:.6Lg}"), F(-1.234567e-5));
+  test(SV("-0.000123457"), SV("{:.6Lg}"), F(-1.234567e-4));
+  test(SV("-0.00123457"), SV("{:.6Lg}"), F(-1.234567e-3));
+  test(SV("-0.0123457"), SV("{:.6Lg}"), F(-1.234567e-2));
+  test(SV("-0.123457"), SV("{:.6Lg}"), F(-1.234567e-1));
+  test(SV("-1.23457"), SV("{:.6Lg}"), F(-1.234567e0));
+  test(SV("-12.3457"), SV("{:.6Lg}"), F(-1.234567e1));
+  test(SV("-123.457"), SV("{:.6Lg}"), F(-1.234567e2));
+  test(SV("-1,234.57"), SV("{:.6Lg}"), F(-1.234567e3));
+  test(SV("-12,345.7"), SV("{:.6Lg}"), F(-1.234567e4));
+  test(SV("-123,457"), SV("{:.6Lg}"), F(-1.234567e5));
+  test(SV("-1.23457e+06"), SV("{:.6Lg}"), F(-1.234567e6));
+  test(SV("-1.23457e+07"), SV("{:.6Lg}"), F(-1.234567e7));
+
+  std::locale::global(loc);
+  test(SV("1#23457e-06"), SV("{:.6Lg}"), F(1.234567e-6));
+  test(SV("1#23457e-05"), SV("{:.6Lg}"), F(1.234567e-5));
+  test(SV("0#000123457"), SV("{:.6Lg}"), F(1.234567e-4));
+  test(SV("0#00123457"), SV("{:.6Lg}"), F(1.234567e-3));
+  test(SV("0#0123457"), SV("{:.6Lg}"), F(1.234567e-2));
+  test(SV("0#123457"), SV("{:.6Lg}"), F(1.234567e-1));
+  test(SV("1#23457"), SV("{:.6Lg}"), F(1.234567e0));
+  test(SV("1_2#3457"), SV("{:.6Lg}"), F(1.234567e1));
+  test(SV("12_3#457"), SV("{:.6Lg}"), F(1.234567e2));
+  test(SV("1_23_4#57"), SV("{:.6Lg}"), F(1.234567e3));
+  test(SV("12_34_5#7"), SV("{:.6Lg}"), F(1.234567e4));
+  test(SV("123_45_7"), SV("{:.6Lg}"), F(1.234567e5));
+  test(SV("1#23457e+06"), SV("{:.6Lg}"), F(1.234567e6));
+  test(SV("1#23457e+07"), SV("{:.6Lg}"), F(1.234567e7));
+  test(SV("-1#23457e-06"), SV("{:.6Lg}"), F(-1.234567e-6));
+  test(SV("-1#23457e-05"), SV("{:.6Lg}"), F(-1.234567e-5));
+  test(SV("-0#000123457"), SV("{:.6Lg}"), F(-1.234567e-4));
+  test(SV("-0#00123457"), SV("{:.6Lg}"), F(-1.234567e-3));
+  test(SV("-0#0123457"), SV("{:.6Lg}"), F(-1.234567e-2));
+  test(SV("-0#123457"), SV("{:.6Lg}"), F(-1.234567e-1));
+  test(SV("-1#23457"), SV("{:.6Lg}"), F(-1.234567e0));
+  test(SV("-1_2#3457"), SV("{:.6Lg}"), F(-1.234567e1));
+  test(SV("-12_3#457"), SV("{:.6Lg}"), F(-1.234567e2));
+  test(SV("-1_23_4#57"), SV("{:.6Lg}"), F(-1.234567e3));
+  test(SV("-12_34_5#7"), SV("{:.6Lg}"), F(-1.234567e4));
+  test(SV("-123_45_7"), SV("{:.6Lg}"), F(-1.234567e5));
+  test(SV("-1#23457e+06"), SV("{:.6Lg}"), F(-1.234567e6));
+  test(SV("-1#23457e+07"), SV("{:.6Lg}"), F(-1.234567e7));
+
+  test(SV("1.23457e-06"), en_US, SV("{:.6Lg}"), F(1.234567e-6));
+  test(SV("1.23457e-05"), en_US, SV("{:.6Lg}"), F(1.234567e-5));
+  test(SV("0.000123457"), en_US, SV("{:.6Lg}"), F(1.234567e-4));
+  test(SV("0.00123457"), en_US, SV("{:.6Lg}"), F(1.234567e-3));
+  test(SV("0.0123457"), en_US, SV("{:.6Lg}"), F(1.234567e-2));
+  test(SV("0.123457"), en_US, SV("{:.6Lg}"), F(1.234567e-1));
+  test(SV("1.23457"), en_US, SV("{:.6Lg}"), F(1.234567e0));
+  test(SV("12.3457"), en_US, SV("{:.6Lg}"), F(1.234567e1));
+  test(SV("123.457"), en_US, SV("{:.6Lg}"), F(1.234567e2));
+  test(SV("1,234.57"), en_US, SV("{:.6Lg}"), F(1.234567e3));
+  test(SV("12,345.7"), en_US, SV("{:.6Lg}"), F(1.234567e4));
+  test(SV("123,457"), en_US, SV("{:.6Lg}"), F(1.234567e5));
+  test(SV("1.23457e+06"), en_US, SV("{:.6Lg}"), F(1.234567e6));
+  test(SV("1.23457e+07"), en_US, SV("{:.6Lg}"), F(1.234567e7));
+  test(SV("-1.23457e-06"), en_US, SV("{:.6Lg}"), F(-1.234567e-6));
+  test(SV("-1.23457e-05"), en_US, SV("{:.6Lg}"), F(-1.234567e-5));
+  test(SV("-0.000123457"), en_US, SV("{:.6Lg}"), F(-1.234567e-4));
+  test(SV("-0.00123457"), en_US, SV("{:.6Lg}"), F(-1.234567e-3));
+  test(SV("-0.0123457"), en_US, SV("{:.6Lg}"), F(-1.234567e-2));
+  test(SV("-0.123457"), en_US, SV("{:.6Lg}"), F(-1.234567e-1));
+  test(SV("-1.23457"), en_US, SV("{:.6Lg}"), F(-1.234567e0));
+  test(SV("-12.3457"), en_US, SV("{:.6Lg}"), F(-1.234567e1));
+  test(SV("-123.457"), en_US, SV("{:.6Lg}"), F(-1.234567e2));
+  test(SV("-1,234.57"), en_US, SV("{:.6Lg}"), F(-1.234567e3));
+  test(SV("-12,345.7"), en_US, SV("{:.6Lg}"), F(-1.234567e4));
+  test(SV("-123,457"), en_US, SV("{:.6Lg}"), F(-1.234567e5));
+  test(SV("-1.23457e+06"), en_US, SV("{:.6Lg}"), F(-1.234567e6));
+  test(SV("-1.23457e+07"), en_US, SV("{:.6Lg}"), F(-1.234567e7));
+
+  std::locale::global(en_US);
+  test(SV("1#23457e-06"), loc, SV("{:.6Lg}"), F(1.234567e-6));
+  test(SV("1#23457e-05"), loc, SV("{:.6Lg}"), F(1.234567e-5));
+  test(SV("0#000123457"), loc, SV("{:.6Lg}"), F(1.234567e-4));
+  test(SV("0#00123457"), loc, SV("{:.6Lg}"), F(1.234567e-3));
+  test(SV("0#0123457"), loc, SV("{:.6Lg}"), F(1.234567e-2));
+  test(SV("0#123457"), loc, SV("{:.6Lg}"), F(1.234567e-1));
+  test(SV("1#23457"), loc, SV("{:.6Lg}"), F(1.234567e0));
+  test(SV("1_2#3457"), loc, SV("{:.6Lg}"), F(1.234567e1));
+  test(SV("12_3#457"), loc, SV("{:.6Lg}"), F(1.234567e2));
+  test(SV("1_23_4#57"), loc, SV("{:.6Lg}"), F(1.234567e3));
+  test(SV("12_34_5#7"), loc, SV("{:.6Lg}"), F(1.234567e4));
+  test(SV("123_45_7"), loc, SV("{:.6Lg}"), F(1.234567e5));
+  test(SV("1#23457e+06"), loc, SV("{:.6Lg}"), F(1.234567e6));
+  test(SV("1#23457e+07"), loc, SV("{:.6Lg}"), F(1.234567e7));
+  test(SV("-1#23457e-06"), loc, SV("{:.6Lg}"), F(-1.234567e-6));
+  test(SV("-1#23457e-05"), loc, SV("{:.6Lg}"), F(-1.234567e-5));
+  test(SV("-0#000123457"), loc, SV("{:.6Lg}"), F(-1.234567e-4));
+  test(SV("-0#00123457"), loc, SV("{:.6Lg}"), F(-1.234567e-3));
+  test(SV("-0#0123457"), loc, SV("{:.6Lg}"), F(-1.234567e-2));
+  test(SV("-0#123457"), loc, SV("{:.6Lg}"), F(-1.234567e-1));
+  test(SV("-1#23457"), loc, SV("{:.6Lg}"), F(-1.234567e0));
+  test(SV("-1_2#3457"), loc, SV("{:.6Lg}"), F(-1.234567e1));
+  test(SV("-12_3#457"), loc, SV("{:.6Lg}"), F(-1.234567e2));
+  test(SV("-1_23_4#57"), loc, SV("{:.6Lg}"), F(-1.234567e3));
+  test(SV("-12_34_5#7"), loc, SV("{:.6Lg}"), F(-1.234567e4));
+  test(SV("-123_45_7"), loc, SV("{:.6Lg}"), F(-1.234567e5));
+  test(SV("-1#23457e+06"), loc, SV("{:.6Lg}"), F(-1.234567e6));
+  test(SV("-1#23457e+07"), loc, SV("{:.6Lg}"), F(-1.234567e7));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1,234.57$$$"), SV("{:$<11.6Lg}"), F(1.234567e3));
+  test(SV("$$$1,234.57"), SV("{:$>11.6Lg}"), F(1.234567e3));
+  test(SV("$1,234.57$$"), SV("{:$^11.6Lg}"), F(1.234567e3));
+  test(SV("0001,234.57"), SV("{:011.6Lg}"), F(1.234567e3));
+  test(SV("-1,234.57$$$"), SV("{:$<12.6Lg}"), F(-1.234567e3));
+  test(SV("$$$-1,234.57"), SV("{:$>12.6Lg}"), F(-1.234567e3));
+  test(SV("$-1,234.57$$"), SV("{:$^12.6Lg}"), F(-1.234567e3));
+  test(SV("-0001,234.57"), SV("{:012.6Lg}"), F(-1.234567e3));
+
+  std::locale::global(loc);
+  test(SV("1_23_4#57$$$"), SV("{:$<12.6Lg}"), F(1.234567e3));
+  test(SV("$$$1_23_4#57"), SV("{:$>12.6Lg}"), F(1.234567e3));
+  test(SV("$1_23_4#57$$"), SV("{:$^12.6Lg}"), F(1.234567e3));
+  test(SV("0001_23_4#57"), SV("{:012.6Lg}"), F(1.234567e3));
+  test(SV("-1_23_4#57$$$"), SV("{:$<13.6Lg}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#57"), SV("{:$>13.6Lg}"), F(-1.234567e3));
+  test(SV("$-1_23_4#57$$"), SV("{:$^13.6Lg}"), F(-1.234567e3));
+  test(SV("-0001_23_4#57"), SV("{:013.6Lg}"), F(-1.234567e3));
+
+  test(SV("1,234.57$$$"), en_US, SV("{:$<11.6Lg}"), F(1.234567e3));
+  test(SV("$$$1,234.57"), en_US, SV("{:$>11.6Lg}"), F(1.234567e3));
+  test(SV("$1,234.57$$"), en_US, SV("{:$^11.6Lg}"), F(1.234567e3));
+  test(SV("0001,234.57"), en_US, SV("{:011.6Lg}"), F(1.234567e3));
+  test(SV("-1,234.57$$$"), en_US, SV("{:$<12.6Lg}"), F(-1.234567e3));
+  test(SV("$$$-1,234.57"), en_US, SV("{:$>12.6Lg}"), F(-1.234567e3));
+  test(SV("$-1,234.57$$"), en_US, SV("{:$^12.6Lg}"), F(-1.234567e3));
+  test(SV("-0001,234.57"), en_US, SV("{:012.6Lg}"), F(-1.234567e3));
+
+  std::locale::global(en_US);
+  test(SV("1_23_4#57$$$"), loc, SV("{:$<12.6Lg}"), F(1.234567e3));
+  test(SV("$$$1_23_4#57"), loc, SV("{:$>12.6Lg}"), F(1.234567e3));
+  test(SV("$1_23_4#57$$"), loc, SV("{:$^12.6Lg}"), F(1.234567e3));
+  test(SV("0001_23_4#57"), loc, SV("{:012.6Lg}"), F(1.234567e3));
+  test(SV("-1_23_4#57$$$"), loc, SV("{:$<13.6Lg}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#57"), loc, SV("{:$>13.6Lg}"), F(-1.234567e3));
+  test(SV("$-1_23_4#57$$"), loc, SV("{:$^13.6Lg}"), F(-1.234567e3));
+  test(SV("-0001_23_4#57"), loc, SV("{:013.6Lg}"), F(-1.234567e3));
+}
+
+template <class F, class CharT>
+void test_floating_point_general_upper_case() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.23457E-06"), SV("{:.6LG}"), F(1.234567e-6));
+  test(SV("1.23457E-05"), SV("{:.6LG}"), F(1.234567e-5));
+  test(SV("0.000123457"), SV("{:.6LG}"), F(1.234567e-4));
+  test(SV("0.00123457"), SV("{:.6LG}"), F(1.234567e-3));
+  test(SV("0.0123457"), SV("{:.6LG}"), F(1.234567e-2));
+  test(SV("0.123457"), SV("{:.6LG}"), F(1.234567e-1));
+  test(SV("1.23457"), SV("{:.6LG}"), F(1.234567e0));
+  test(SV("12.3457"), SV("{:.6LG}"), F(1.234567e1));
+  test(SV("123.457"), SV("{:.6LG}"), F(1.234567e2));
+  test(SV("1,234.57"), SV("{:.6LG}"), F(1.234567e3));
+  test(SV("12,345.7"), SV("{:.6LG}"), F(1.234567e4));
+  test(SV("123,457"), SV("{:.6LG}"), F(1.234567e5));
+  test(SV("1.23457E+06"), SV("{:.6LG}"), F(1.234567e6));
+  test(SV("1.23457E+07"), SV("{:.6LG}"), F(1.234567e7));
+  test(SV("-1.23457E-06"), SV("{:.6LG}"), F(-1.234567e-6));
+  test(SV("-1.23457E-05"), SV("{:.6LG}"), F(-1.234567e-5));
+  test(SV("-0.000123457"), SV("{:.6LG}"), F(-1.234567e-4));
+  test(SV("-0.00123457"), SV("{:.6LG}"), F(-1.234567e-3));
+  test(SV("-0.0123457"), SV("{:.6LG}"), F(-1.234567e-2));
+  test(SV("-0.123457"), SV("{:.6LG}"), F(-1.234567e-1));
+  test(SV("-1.23457"), SV("{:.6LG}"), F(-1.234567e0));
+  test(SV("-12.3457"), SV("{:.6LG}"), F(-1.234567e1));
+  test(SV("-123.457"), SV("{:.6LG}"), F(-1.234567e2));
+  test(SV("-1,234.57"), SV("{:.6LG}"), F(-1.234567e3));
+  test(SV("-12,345.7"), SV("{:.6LG}"), F(-1.234567e4));
+  test(SV("-123,457"), SV("{:.6LG}"), F(-1.234567e5));
+  test(SV("-1.23457E+06"), SV("{:.6LG}"), F(-1.234567e6));
+  test(SV("-1.23457E+07"), SV("{:.6LG}"), F(-1.234567e7));
+
+  std::locale::global(loc);
+  test(SV("1#23457E-06"), SV("{:.6LG}"), F(1.234567e-6));
+  test(SV("1#23457E-05"), SV("{:.6LG}"), F(1.234567e-5));
+  test(SV("0#000123457"), SV("{:.6LG}"), F(1.234567e-4));
+  test(SV("0#00123457"), SV("{:.6LG}"), F(1.234567e-3));
+  test(SV("0#0123457"), SV("{:.6LG}"), F(1.234567e-2));
+  test(SV("0#123457"), SV("{:.6LG}"), F(1.234567e-1));
+  test(SV("1#23457"), SV("{:.6LG}"), F(1.234567e0));
+  test(SV("1_2#3457"), SV("{:.6LG}"), F(1.234567e1));
+  test(SV("12_3#457"), SV("{:.6LG}"), F(1.234567e2));
+  test(SV("1_23_4#57"), SV("{:.6LG}"), F(1.234567e3));
+  test(SV("12_34_5#7"), SV("{:.6LG}"), F(1.234567e4));
+  test(SV("123_45_7"), SV("{:.6LG}"), F(1.234567e5));
+  test(SV("1#23457E+06"), SV("{:.6LG}"), F(1.234567e6));
+  test(SV("1#23457E+07"), SV("{:.6LG}"), F(1.234567e7));
+  test(SV("-1#23457E-06"), SV("{:.6LG}"), F(-1.234567e-6));
+  test(SV("-1#23457E-05"), SV("{:.6LG}"), F(-1.234567e-5));
+  test(SV("-0#000123457"), SV("{:.6LG}"), F(-1.234567e-4));
+  test(SV("-0#00123457"), SV("{:.6LG}"), F(-1.234567e-3));
+  test(SV("-0#0123457"), SV("{:.6LG}"), F(-1.234567e-2));
+  test(SV("-0#123457"), SV("{:.6LG}"), F(-1.234567e-1));
+  test(SV("-1#23457"), SV("{:.6LG}"), F(-1.234567e0));
+  test(SV("-1_2#3457"), SV("{:.6LG}"), F(-1.234567e1));
+  test(SV("-12_3#457"), SV("{:.6LG}"), F(-1.234567e2));
+  test(SV("-1_23_4#57"), SV("{:.6LG}"), F(-1.234567e3));
+  test(SV("-12_34_5#7"), SV("{:.6LG}"), F(-1.234567e4));
+  test(SV("-123_45_7"), SV("{:.6LG}"), F(-1.234567e5));
+  test(SV("-1#23457E+06"), SV("{:.6LG}"), F(-1.234567e6));
+  test(SV("-1#23457E+07"), SV("{:.6LG}"), F(-1.234567e7));
+
+  test(SV("1.23457E-06"), en_US, SV("{:.6LG}"), F(1.234567e-6));
+  test(SV("1.23457E-05"), en_US, SV("{:.6LG}"), F(1.234567e-5));
+  test(SV("0.000123457"), en_US, SV("{:.6LG}"), F(1.234567e-4));
+  test(SV("0.00123457"), en_US, SV("{:.6LG}"), F(1.234567e-3));
+  test(SV("0.0123457"), en_US, SV("{:.6LG}"), F(1.234567e-2));
+  test(SV("0.123457"), en_US, SV("{:.6LG}"), F(1.234567e-1));
+  test(SV("1.23457"), en_US, SV("{:.6LG}"), F(1.234567e0));
+  test(SV("12.3457"), en_US, SV("{:.6LG}"), F(1.234567e1));
+  test(SV("123.457"), en_US, SV("{:.6LG}"), F(1.234567e2));
+  test(SV("1,234.57"), en_US, SV("{:.6LG}"), F(1.234567e3));
+  test(SV("12,345.7"), en_US, SV("{:.6LG}"), F(1.234567e4));
+  test(SV("123,457"), en_US, SV("{:.6LG}"), F(1.234567e5));
+  test(SV("1.23457E+06"), en_US, SV("{:.6LG}"), F(1.234567e6));
+  test(SV("1.23457E+07"), en_US, SV("{:.6LG}"), F(1.234567e7));
+  test(SV("-1.23457E-06"), en_US, SV("{:.6LG}"), F(-1.234567e-6));
+  test(SV("-1.23457E-05"), en_US, SV("{:.6LG}"), F(-1.234567e-5));
+  test(SV("-0.000123457"), en_US, SV("{:.6LG}"), F(-1.234567e-4));
+  test(SV("-0.00123457"), en_US, SV("{:.6LG}"), F(-1.234567e-3));
+  test(SV("-0.0123457"), en_US, SV("{:.6LG}"), F(-1.234567e-2));
+  test(SV("-0.123457"), en_US, SV("{:.6LG}"), F(-1.234567e-1));
+  test(SV("-1.23457"), en_US, SV("{:.6LG}"), F(-1.234567e0));
+  test(SV("-12.3457"), en_US, SV("{:.6LG}"), F(-1.234567e1));
+  test(SV("-123.457"), en_US, SV("{:.6LG}"), F(-1.234567e2));
+  test(SV("-1,234.57"), en_US, SV("{:.6LG}"), F(-1.234567e3));
+  test(SV("-12,345.7"), en_US, SV("{:.6LG}"), F(-1.234567e4));
+  test(SV("-123,457"), en_US, SV("{:.6LG}"), F(-1.234567e5));
+  test(SV("-1.23457E+06"), en_US, SV("{:.6LG}"), F(-1.234567e6));
+  test(SV("-1.23457E+07"), en_US, SV("{:.6LG}"), F(-1.234567e7));
+
+  std::locale::global(en_US);
+  test(SV("1#23457E-06"), loc, SV("{:.6LG}"), F(1.234567e-6));
+  test(SV("1#23457E-05"), loc, SV("{:.6LG}"), F(1.234567e-5));
+  test(SV("0#000123457"), loc, SV("{:.6LG}"), F(1.234567e-4));
+  test(SV("0#00123457"), loc, SV("{:.6LG}"), F(1.234567e-3));
+  test(SV("0#0123457"), loc, SV("{:.6LG}"), F(1.234567e-2));
+  test(SV("0#123457"), loc, SV("{:.6LG}"), F(1.234567e-1));
+  test(SV("1#23457"), loc, SV("{:.6LG}"), F(1.234567e0));
+  test(SV("1_2#3457"), loc, SV("{:.6LG}"), F(1.234567e1));
+  test(SV("12_3#457"), loc, SV("{:.6LG}"), F(1.234567e2));
+  test(SV("1_23_4#57"), loc, SV("{:.6LG}"), F(1.234567e3));
+  test(SV("12_34_5#7"), loc, SV("{:.6LG}"), F(1.234567e4));
+  test(SV("123_45_7"), loc, SV("{:.6LG}"), F(1.234567e5));
+  test(SV("1#23457E+06"), loc, SV("{:.6LG}"), F(1.234567e6));
+  test(SV("1#23457E+07"), loc, SV("{:.6LG}"), F(1.234567e7));
+  test(SV("-1#23457E-06"), loc, SV("{:.6LG}"), F(-1.234567e-6));
+  test(SV("-1#23457E-05"), loc, SV("{:.6LG}"), F(-1.234567e-5));
+  test(SV("-0#000123457"), loc, SV("{:.6LG}"), F(-1.234567e-4));
+  test(SV("-0#00123457"), loc, SV("{:.6LG}"), F(-1.234567e-3));
+  test(SV("-0#0123457"), loc, SV("{:.6LG}"), F(-1.234567e-2));
+  test(SV("-0#123457"), loc, SV("{:.6LG}"), F(-1.234567e-1));
+  test(SV("-1#23457"), loc, SV("{:.6LG}"), F(-1.234567e0));
+  test(SV("-1_2#3457"), loc, SV("{:.6LG}"), F(-1.234567e1));
+  test(SV("-12_3#457"), loc, SV("{:.6LG}"), F(-1.234567e2));
+  test(SV("-1_23_4#57"), loc, SV("{:.6LG}"), F(-1.234567e3));
+  test(SV("-12_34_5#7"), loc, SV("{:.6LG}"), F(-1.234567e4));
+  test(SV("-123_45_7"), loc, SV("{:.6LG}"), F(-1.234567e5));
+  test(SV("-1#23457E+06"), loc, SV("{:.6LG}"), F(-1.234567e6));
+  test(SV("-1#23457E+07"), loc, SV("{:.6LG}"), F(-1.234567e7));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1,234.57$$$"), SV("{:$<11.6LG}"), F(1.234567e3));
+  test(SV("$$$1,234.57"), SV("{:$>11.6LG}"), F(1.234567e3));
+  test(SV("$1,234.57$$"), SV("{:$^11.6LG}"), F(1.234567e3));
+  test(SV("0001,234.57"), SV("{:011.6LG}"), F(1.234567e3));
+  test(SV("-1,234.57$$$"), SV("{:$<12.6LG}"), F(-1.234567e3));
+  test(SV("$$$-1,234.57"), SV("{:$>12.6LG}"), F(-1.234567e3));
+  test(SV("$-1,234.57$$"), SV("{:$^12.6LG}"), F(-1.234567e3));
+  test(SV("-0001,234.57"), SV("{:012.6LG}"), F(-1.234567e3));
+
+  std::locale::global(loc);
+  test(SV("1_23_4#57$$$"), SV("{:$<12.6LG}"), F(1.234567e3));
+  test(SV("$$$1_23_4#57"), SV("{:$>12.6LG}"), F(1.234567e3));
+  test(SV("$1_23_4#57$$"), SV("{:$^12.6LG}"), F(1.234567e3));
+  test(SV("0001_23_4#57"), SV("{:012.6LG}"), F(1.234567e3));
+  test(SV("-1_23_4#57$$$"), SV("{:$<13.6LG}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#57"), SV("{:$>13.6LG}"), F(-1.234567e3));
+  test(SV("$-1_23_4#57$$"), SV("{:$^13.6LG}"), F(-1.234567e3));
+  test(SV("-0001_23_4#57"), SV("{:013.6LG}"), F(-1.234567e3));
+
+  test(SV("1,234.57$$$"), en_US, SV("{:$<11.6LG}"), F(1.234567e3));
+  test(SV("$$$1,234.57"), en_US, SV("{:$>11.6LG}"), F(1.234567e3));
+  test(SV("$1,234.57$$"), en_US, SV("{:$^11.6LG}"), F(1.234567e3));
+  test(SV("0001,234.57"), en_US, SV("{:011.6LG}"), F(1.234567e3));
+  test(SV("-1,234.57$$$"), en_US, SV("{:$<12.6LG}"), F(-1.234567e3));
+  test(SV("$$$-1,234.57"), en_US, SV("{:$>12.6LG}"), F(-1.234567e3));
+  test(SV("$-1,234.57$$"), en_US, SV("{:$^12.6LG}"), F(-1.234567e3));
+  test(SV("-0001,234.57"), en_US, SV("{:012.6LG}"), F(-1.234567e3));
+
+  std::locale::global(en_US);
+  test(SV("1_23_4#57$$$"), loc, SV("{:$<12.6LG}"), F(1.234567e3));
+  test(SV("$$$1_23_4#57"), loc, SV("{:$>12.6LG}"), F(1.234567e3));
+  test(SV("$1_23_4#57$$"), loc, SV("{:$^12.6LG}"), F(1.234567e3));
+  test(SV("0001_23_4#57"), loc, SV("{:012.6LG}"), F(1.234567e3));
+  test(SV("-1_23_4#57$$$"), loc, SV("{:$<13.6LG}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#57"), loc, SV("{:$>13.6LG}"), F(-1.234567e3));
+  test(SV("$-1_23_4#57$$"), loc, SV("{:$^13.6LG}"), F(-1.234567e3));
+  test(SV("-0001_23_4#57"), loc, SV("{:013.6LG}"), F(-1.234567e3));
+}
+
+template <class F, class CharT>
+void test_floating_point_default() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.234567e-06"), SV("{:L}"), F(1.234567e-6));
+  test(SV("1.234567e-05"), SV("{:L}"), F(1.234567e-5));
+  test(SV("0.0001234567"), SV("{:L}"), F(1.234567e-4));
+  test(SV("0.001234567"), SV("{:L}"), F(1.234567e-3));
+  test(SV("0.01234567"), SV("{:L}"), F(1.234567e-2));
+  test(SV("0.1234567"), SV("{:L}"), F(1.234567e-1));
+  test(SV("1.234567"), SV("{:L}"), F(1.234567e0));
+  test(SV("12.34567"), SV("{:L}"), F(1.234567e1));
+  test(SV("123.4567"), SV("{:L}"), F(1.234567e2));
+  test(SV("1,234.567"), SV("{:L}"), F(1.234567e3));
+  test(SV("12,345.67"), SV("{:L}"), F(1.234567e4));
+  test(SV("123,456.7"), SV("{:L}"), F(1.234567e5));
+  test(SV("1,234,567"), SV("{:L}"), F(1.234567e6));
+  test(SV("12,345,670"), SV("{:L}"), F(1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("123,456,700"), SV("{:L}"), F(1.234567e8));
+    test(SV("1,234,567,000"), SV("{:L}"), F(1.234567e9));
+    test(SV("12,345,670,000"), SV("{:L}"), F(1.234567e10));
+    test(SV("123,456,700,000"), SV("{:L}"), F(1.234567e11));
+    test(SV("1.234567e+12"), SV("{:L}"), F(1.234567e12));
+    test(SV("1.234567e+13"), SV("{:L}"), F(1.234567e13));
+  }
+  test(SV("-1.234567e-06"), SV("{:L}"), F(-1.234567e-6));
+  test(SV("-1.234567e-05"), SV("{:L}"), F(-1.234567e-5));
+  test(SV("-0.0001234567"), SV("{:L}"), F(-1.234567e-4));
+  test(SV("-0.001234567"), SV("{:L}"), F(-1.234567e-3));
+  test(SV("-0.01234567"), SV("{:L}"), F(-1.234567e-2));
+  test(SV("-0.1234567"), SV("{:L}"), F(-1.234567e-1));
+  test(SV("-1.234567"), SV("{:L}"), F(-1.234567e0));
+  test(SV("-12.34567"), SV("{:L}"), F(-1.234567e1));
+  test(SV("-123.4567"), SV("{:L}"), F(-1.234567e2));
+  test(SV("-1,234.567"), SV("{:L}"), F(-1.234567e3));
+  test(SV("-12,345.67"), SV("{:L}"), F(-1.234567e4));
+  test(SV("-123,456.7"), SV("{:L}"), F(-1.234567e5));
+  test(SV("-1,234,567"), SV("{:L}"), F(-1.234567e6));
+  test(SV("-12,345,670"), SV("{:L}"), F(-1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-123,456,700"), SV("{:L}"), F(-1.234567e8));
+    test(SV("-1,234,567,000"), SV("{:L}"), F(-1.234567e9));
+    test(SV("-12,345,670,000"), SV("{:L}"), F(-1.234567e10));
+    test(SV("-123,456,700,000"), SV("{:L}"), F(-1.234567e11));
+    test(SV("-1.234567e+12"), SV("{:L}"), F(-1.234567e12));
+    test(SV("-1.234567e+13"), SV("{:L}"), F(-1.234567e13));
+  }
+
+  std::locale::global(loc);
+  test(SV("1#234567e-06"), SV("{:L}"), F(1.234567e-6));
+  test(SV("1#234567e-05"), SV("{:L}"), F(1.234567e-5));
+  test(SV("0#0001234567"), SV("{:L}"), F(1.234567e-4));
+  test(SV("0#001234567"), SV("{:L}"), F(1.234567e-3));
+  test(SV("0#01234567"), SV("{:L}"), F(1.234567e-2));
+  test(SV("0#1234567"), SV("{:L}"), F(1.234567e-1));
+  test(SV("1#234567"), SV("{:L}"), F(1.234567e0));
+  test(SV("1_2#34567"), SV("{:L}"), F(1.234567e1));
+  test(SV("12_3#4567"), SV("{:L}"), F(1.234567e2));
+  test(SV("1_23_4#567"), SV("{:L}"), F(1.234567e3));
+  test(SV("12_34_5#67"), SV("{:L}"), F(1.234567e4));
+  test(SV("123_45_6#7"), SV("{:L}"), F(1.234567e5));
+  test(SV("1_234_56_7"), SV("{:L}"), F(1.234567e6));
+  test(SV("12_345_67_0"), SV("{:L}"), F(1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("1_23_456_70_0"), SV("{:L}"), F(1.234567e8));
+    test(SV("1_2_34_567_00_0"), SV("{:L}"), F(1.234567e9));
+    test(SV("1_2_3_45_670_00_0"), SV("{:L}"), F(1.234567e10));
+    test(SV("1_2_3_4_56_700_00_0"), SV("{:L}"), F(1.234567e11));
+    test(SV("1#234567e+12"), SV("{:L}"), F(1.234567e12));
+    test(SV("1#234567e+13"), SV("{:L}"), F(1.234567e13));
+  }
+  test(SV("-1#234567e-06"), SV("{:L}"), F(-1.234567e-6));
+  test(SV("-1#234567e-05"), SV("{:L}"), F(-1.234567e-5));
+  test(SV("-0#0001234567"), SV("{:L}"), F(-1.234567e-4));
+  test(SV("-0#001234567"), SV("{:L}"), F(-1.234567e-3));
+  test(SV("-0#01234567"), SV("{:L}"), F(-1.234567e-2));
+  test(SV("-0#1234567"), SV("{:L}"), F(-1.234567e-1));
+  test(SV("-1#234567"), SV("{:L}"), F(-1.234567e0));
+  test(SV("-1_2#34567"), SV("{:L}"), F(-1.234567e1));
+  test(SV("-12_3#4567"), SV("{:L}"), F(-1.234567e2));
+  test(SV("-1_23_4#567"), SV("{:L}"), F(-1.234567e3));
+  test(SV("-12_34_5#67"), SV("{:L}"), F(-1.234567e4));
+  test(SV("-123_45_6#7"), SV("{:L}"), F(-1.234567e5));
+  test(SV("-1_234_56_7"), SV("{:L}"), F(-1.234567e6));
+  test(SV("-12_345_67_0"), SV("{:L}"), F(-1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-1_23_456_70_0"), SV("{:L}"), F(-1.234567e8));
+    test(SV("-1_2_34_567_00_0"), SV("{:L}"), F(-1.234567e9));
+    test(SV("-1_2_3_45_670_00_0"), SV("{:L}"), F(-1.234567e10));
+    test(SV("-1_2_3_4_56_700_00_0"), SV("{:L}"), F(-1.234567e11));
+    test(SV("-1#234567e+12"), SV("{:L}"), F(-1.234567e12));
+    test(SV("-1#234567e+13"), SV("{:L}"), F(-1.234567e13));
+  }
+
+  test(SV("1.234567e-06"), en_US, SV("{:L}"), F(1.234567e-6));
+  test(SV("1.234567e-05"), en_US, SV("{:L}"), F(1.234567e-5));
+  test(SV("0.0001234567"), en_US, SV("{:L}"), F(1.234567e-4));
+  test(SV("0.001234567"), en_US, SV("{:L}"), F(1.234567e-3));
+  test(SV("0.01234567"), en_US, SV("{:L}"), F(1.234567e-2));
+  test(SV("0.1234567"), en_US, SV("{:L}"), F(1.234567e-1));
+  test(SV("1.234567"), en_US, SV("{:L}"), F(1.234567e0));
+  test(SV("12.34567"), en_US, SV("{:L}"), F(1.234567e1));
+  test(SV("123.4567"), en_US, SV("{:L}"), F(1.234567e2));
+  test(SV("1,234.567"), en_US, SV("{:L}"), F(1.234567e3));
+  test(SV("12,345.67"), en_US, SV("{:L}"), F(1.234567e4));
+  test(SV("123,456.7"), en_US, SV("{:L}"), F(1.234567e5));
+  test(SV("1,234,567"), en_US, SV("{:L}"), F(1.234567e6));
+  test(SV("12,345,670"), en_US, SV("{:L}"), F(1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("123,456,700"), en_US, SV("{:L}"), F(1.234567e8));
+    test(SV("1,234,567,000"), en_US, SV("{:L}"), F(1.234567e9));
+    test(SV("12,345,670,000"), en_US, SV("{:L}"), F(1.234567e10));
+    test(SV("123,456,700,000"), en_US, SV("{:L}"), F(1.234567e11));
+    test(SV("1.234567e+12"), en_US, SV("{:L}"), F(1.234567e12));
+    test(SV("1.234567e+13"), en_US, SV("{:L}"), F(1.234567e13));
+  }
+  test(SV("-1.234567e-06"), en_US, SV("{:L}"), F(-1.234567e-6));
+  test(SV("-1.234567e-05"), en_US, SV("{:L}"), F(-1.234567e-5));
+  test(SV("-0.0001234567"), en_US, SV("{:L}"), F(-1.234567e-4));
+  test(SV("-0.001234567"), en_US, SV("{:L}"), F(-1.234567e-3));
+  test(SV("-0.01234567"), en_US, SV("{:L}"), F(-1.234567e-2));
+  test(SV("-0.1234567"), en_US, SV("{:L}"), F(-1.234567e-1));
+  test(SV("-1.234567"), en_US, SV("{:L}"), F(-1.234567e0));
+  test(SV("-12.34567"), en_US, SV("{:L}"), F(-1.234567e1));
+  test(SV("-123.4567"), en_US, SV("{:L}"), F(-1.234567e2));
+  test(SV("-1,234.567"), en_US, SV("{:L}"), F(-1.234567e3));
+  test(SV("-12,345.67"), en_US, SV("{:L}"), F(-1.234567e4));
+  test(SV("-123,456.7"), en_US, SV("{:L}"), F(-1.234567e5));
+  test(SV("-1,234,567"), en_US, SV("{:L}"), F(-1.234567e6));
+  test(SV("-12,345,670"), en_US, SV("{:L}"), F(-1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-123,456,700"), en_US, SV("{:L}"), F(-1.234567e8));
+    test(SV("-1,234,567,000"), en_US, SV("{:L}"), F(-1.234567e9));
+    test(SV("-12,345,670,000"), en_US, SV("{:L}"), F(-1.234567e10));
+    test(SV("-123,456,700,000"), en_US, SV("{:L}"), F(-1.234567e11));
+    test(SV("-1.234567e+12"), en_US, SV("{:L}"), F(-1.234567e12));
+    test(SV("-1.234567e+13"), en_US, SV("{:L}"), F(-1.234567e13));
+  }
+
+  std::locale::global(en_US);
+  test(SV("1#234567e-06"), loc, SV("{:L}"), F(1.234567e-6));
+  test(SV("1#234567e-05"), loc, SV("{:L}"), F(1.234567e-5));
+  test(SV("0#0001234567"), loc, SV("{:L}"), F(1.234567e-4));
+  test(SV("0#001234567"), loc, SV("{:L}"), F(1.234567e-3));
+  test(SV("0#01234567"), loc, SV("{:L}"), F(1.234567e-2));
+  test(SV("0#1234567"), loc, SV("{:L}"), F(1.234567e-1));
+  test(SV("1#234567"), loc, SV("{:L}"), F(1.234567e0));
+  test(SV("1_2#34567"), loc, SV("{:L}"), F(1.234567e1));
+  test(SV("12_3#4567"), loc, SV("{:L}"), F(1.234567e2));
+  test(SV("1_23_4#567"), loc, SV("{:L}"), F(1.234567e3));
+  test(SV("12_34_5#67"), loc, SV("{:L}"), F(1.234567e4));
+  test(SV("123_45_6#7"), loc, SV("{:L}"), F(1.234567e5));
+  test(SV("1_234_56_7"), loc, SV("{:L}"), F(1.234567e6));
+  test(SV("12_345_67_0"), loc, SV("{:L}"), F(1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("1_23_456_70_0"), loc, SV("{:L}"), F(1.234567e8));
+    test(SV("1_2_34_567_00_0"), loc, SV("{:L}"), F(1.234567e9));
+    test(SV("1_2_3_45_670_00_0"), loc, SV("{:L}"), F(1.234567e10));
+    test(SV("1_2_3_4_56_700_00_0"), loc, SV("{:L}"), F(1.234567e11));
+    test(SV("1#234567e+12"), loc, SV("{:L}"), F(1.234567e12));
+    test(SV("1#234567e+13"), loc, SV("{:L}"), F(1.234567e13));
+  }
+  test(SV("-1#234567e-06"), loc, SV("{:L}"), F(-1.234567e-6));
+  test(SV("-1#234567e-05"), loc, SV("{:L}"), F(-1.234567e-5));
+  test(SV("-0#0001234567"), loc, SV("{:L}"), F(-1.234567e-4));
+  test(SV("-0#001234567"), loc, SV("{:L}"), F(-1.234567e-3));
+  test(SV("-0#01234567"), loc, SV("{:L}"), F(-1.234567e-2));
+  test(SV("-0#1234567"), loc, SV("{:L}"), F(-1.234567e-1));
+  test(SV("-1#234567"), loc, SV("{:L}"), F(-1.234567e0));
+  test(SV("-1_2#34567"), loc, SV("{:L}"), F(-1.234567e1));
+  test(SV("-12_3#4567"), loc, SV("{:L}"), F(-1.234567e2));
+  test(SV("-1_23_4#567"), loc, SV("{:L}"), F(-1.234567e3));
+  test(SV("-12_34_5#67"), loc, SV("{:L}"), F(-1.234567e4));
+  test(SV("-123_45_6#7"), loc, SV("{:L}"), F(-1.234567e5));
+  test(SV("-1_234_56_7"), loc, SV("{:L}"), F(-1.234567e6));
+  test(SV("-12_345_67_0"), loc, SV("{:L}"), F(-1.234567e7));
+  if constexpr (sizeof(F) > sizeof(float)) {
+    test(SV("-1_23_456_70_0"), loc, SV("{:L}"), F(-1.234567e8));
+    test(SV("-1_2_34_567_00_0"), loc, SV("{:L}"), F(-1.234567e9));
+    test(SV("-1_2_3_45_670_00_0"), loc, SV("{:L}"), F(-1.234567e10));
+    test(SV("-1_2_3_4_56_700_00_0"), loc, SV("{:L}"), F(-1.234567e11));
+    test(SV("-1#234567e+12"), loc, SV("{:L}"), F(-1.234567e12));
+    test(SV("-1#234567e+13"), loc, SV("{:L}"), F(-1.234567e13));
+  }
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1,234.567$$$"), SV("{:$<12L}"), F(1.234567e3));
+  test(SV("$$$1,234.567"), SV("{:$>12L}"), F(1.234567e3));
+  test(SV("$1,234.567$$"), SV("{:$^12L}"), F(1.234567e3));
+  test(SV("0001,234.567"), SV("{:012L}"), F(1.234567e3));
+  test(SV("-1,234.567$$$"), SV("{:$<13L}"), F(-1.234567e3));
+  test(SV("$$$-1,234.567"), SV("{:$>13L}"), F(-1.234567e3));
+  test(SV("$-1,234.567$$"), SV("{:$^13L}"), F(-1.234567e3));
+  test(SV("-0001,234.567"), SV("{:013L}"), F(-1.234567e3));
+
+  std::locale::global(loc);
+  test(SV("1_23_4#567$$$"), SV("{:$<13L}"), F(1.234567e3));
+  test(SV("$$$1_23_4#567"), SV("{:$>13L}"), F(1.234567e3));
+  test(SV("$1_23_4#567$$"), SV("{:$^13L}"), F(1.234567e3));
+  test(SV("0001_23_4#567"), SV("{:013L}"), F(1.234567e3));
+  test(SV("-1_23_4#567$$$"), SV("{:$<14L}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#567"), SV("{:$>14L}"), F(-1.234567e3));
+  test(SV("$-1_23_4#567$$"), SV("{:$^14L}"), F(-1.234567e3));
+  test(SV("-0001_23_4#567"), SV("{:014L}"), F(-1.234567e3));
+
+  test(SV("1,234.567$$$"), en_US, SV("{:$<12L}"), F(1.234567e3));
+  test(SV("$$$1,234.567"), en_US, SV("{:$>12L}"), F(1.234567e3));
+  test(SV("$1,234.567$$"), en_US, SV("{:$^12L}"), F(1.234567e3));
+  test(SV("0001,234.567"), en_US, SV("{:012L}"), F(1.234567e3));
+  test(SV("-1,234.567$$$"), en_US, SV("{:$<13L}"), F(-1.234567e3));
+  test(SV("$$$-1,234.567"), en_US, SV("{:$>13L}"), F(-1.234567e3));
+  test(SV("$-1,234.567$$"), en_US, SV("{:$^13L}"), F(-1.234567e3));
+  test(SV("-0001,234.567"), en_US, SV("{:013L}"), F(-1.234567e3));
+
+  std::locale::global(en_US);
+  test(SV("1_23_4#567$$$"), loc, SV("{:$<13L}"), F(1.234567e3));
+  test(SV("$$$1_23_4#567"), loc, SV("{:$>13L}"), F(1.234567e3));
+  test(SV("$1_23_4#567$$"), loc, SV("{:$^13L}"), F(1.234567e3));
+  test(SV("0001_23_4#567"), loc, SV("{:013L}"), F(1.234567e3));
+  test(SV("-1_23_4#567$$$"), loc, SV("{:$<14L}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#567"), loc, SV("{:$>14L}"), F(-1.234567e3));
+  test(SV("$-1_23_4#567$$"), loc, SV("{:$^14L}"), F(-1.234567e3));
+  test(SV("-0001_23_4#567"), loc, SV("{:014L}"), F(-1.234567e3));
+}
+
+template <class F, class CharT>
+void test_floating_point_default_precision() {
+  std::locale loc = std::locale(std::locale(), new numpunct<CharT>());
+  std::locale en_US = std::locale(LOCALE_en_US_UTF_8);
+
+  // *** Basic ***
+  std::locale::global(en_US);
+  test(SV("1.23457e-06"), SV("{:.6L}"), F(1.234567e-6));
+  test(SV("1.23457e-05"), SV("{:.6L}"), F(1.234567e-5));
+  test(SV("0.000123457"), SV("{:.6L}"), F(1.234567e-4));
+  test(SV("0.00123457"), SV("{:.6L}"), F(1.234567e-3));
+  test(SV("0.0123457"), SV("{:.6L}"), F(1.234567e-2));
+  test(SV("0.123457"), SV("{:.6L}"), F(1.234567e-1));
+  test(SV("1.23457"), SV("{:.6L}"), F(1.234567e0));
+  test(SV("12.3457"), SV("{:.6L}"), F(1.234567e1));
+  test(SV("123.457"), SV("{:.6L}"), F(1.234567e2));
+  test(SV("1,234.57"), SV("{:.6L}"), F(1.234567e3));
+  test(SV("12,345.7"), SV("{:.6L}"), F(1.234567e4));
+  test(SV("123,457"), SV("{:.6L}"), F(1.234567e5));
+  test(SV("1.23457e+06"), SV("{:.6L}"), F(1.234567e6));
+  test(SV("1.23457e+07"), SV("{:.6L}"), F(1.234567e7));
+  test(SV("-1.23457e-06"), SV("{:.6L}"), F(-1.234567e-6));
+  test(SV("-1.23457e-05"), SV("{:.6L}"), F(-1.234567e-5));
+  test(SV("-0.000123457"), SV("{:.6L}"), F(-1.234567e-4));
+  test(SV("-0.00123457"), SV("{:.6L}"), F(-1.234567e-3));
+  test(SV("-0.0123457"), SV("{:.6L}"), F(-1.234567e-2));
+  test(SV("-0.123457"), SV("{:.6L}"), F(-1.234567e-1));
+  test(SV("-1.23457"), SV("{:.6L}"), F(-1.234567e0));
+  test(SV("-12.3457"), SV("{:.6L}"), F(-1.234567e1));
+  test(SV("-123.457"), SV("{:.6L}"), F(-1.234567e2));
+  test(SV("-1,234.57"), SV("{:.6L}"), F(-1.234567e3));
+  test(SV("-12,345.7"), SV("{:.6L}"), F(-1.234567e4));
+  test(SV("-123,457"), SV("{:.6L}"), F(-1.234567e5));
+  test(SV("-1.23457e+06"), SV("{:.6L}"), F(-1.234567e6));
+  test(SV("-1.23457e+07"), SV("{:.6L}"), F(-1.234567e7));
+
+  std::locale::global(loc);
+  test(SV("1#23457e-06"), SV("{:.6L}"), F(1.234567e-6));
+  test(SV("1#23457e-05"), SV("{:.6L}"), F(1.234567e-5));
+  test(SV("0#000123457"), SV("{:.6L}"), F(1.234567e-4));
+  test(SV("0#00123457"), SV("{:.6L}"), F(1.234567e-3));
+  test(SV("0#0123457"), SV("{:.6L}"), F(1.234567e-2));
+  test(SV("0#123457"), SV("{:.6L}"), F(1.234567e-1));
+  test(SV("1#23457"), SV("{:.6L}"), F(1.234567e0));
+  test(SV("1_2#3457"), SV("{:.6L}"), F(1.234567e1));
+  test(SV("12_3#457"), SV("{:.6L}"), F(1.234567e2));
+  test(SV("1_23_4#57"), SV("{:.6L}"), F(1.234567e3));
+  test(SV("12_34_5#7"), SV("{:.6L}"), F(1.234567e4));
+  test(SV("123_45_7"), SV("{:.6L}"), F(1.234567e5));
+  test(SV("1#23457e+06"), SV("{:.6L}"), F(1.234567e6));
+  test(SV("1#23457e+07"), SV("{:.6L}"), F(1.234567e7));
+  test(SV("-1#23457e-06"), SV("{:.6L}"), F(-1.234567e-6));
+  test(SV("-1#23457e-05"), SV("{:.6L}"), F(-1.234567e-5));
+  test(SV("-0#000123457"), SV("{:.6L}"), F(-1.234567e-4));
+  test(SV("-0#00123457"), SV("{:.6L}"), F(-1.234567e-3));
+  test(SV("-0#0123457"), SV("{:.6L}"), F(-1.234567e-2));
+  test(SV("-0#123457"), SV("{:.6L}"), F(-1.234567e-1));
+  test(SV("-1#23457"), SV("{:.6L}"), F(-1.234567e0));
+  test(SV("-1_2#3457"), SV("{:.6L}"), F(-1.234567e1));
+  test(SV("-12_3#457"), SV("{:.6L}"), F(-1.234567e2));
+  test(SV("-1_23_4#57"), SV("{:.6L}"), F(-1.234567e3));
+  test(SV("-12_34_5#7"), SV("{:.6L}"), F(-1.234567e4));
+  test(SV("-123_45_7"), SV("{:.6L}"), F(-1.234567e5));
+  test(SV("-1#23457e+06"), SV("{:.6L}"), F(-1.234567e6));
+  test(SV("-1#23457e+07"), SV("{:.6L}"), F(-1.234567e7));
+
+  test(SV("1.23457e-06"), en_US, SV("{:.6L}"), F(1.234567e-6));
+  test(SV("1.23457e-05"), en_US, SV("{:.6L}"), F(1.234567e-5));
+  test(SV("0.000123457"), en_US, SV("{:.6L}"), F(1.234567e-4));
+  test(SV("0.00123457"), en_US, SV("{:.6L}"), F(1.234567e-3));
+  test(SV("0.0123457"), en_US, SV("{:.6L}"), F(1.234567e-2));
+  test(SV("0.123457"), en_US, SV("{:.6L}"), F(1.234567e-1));
+  test(SV("1.23457"), en_US, SV("{:.6L}"), F(1.234567e0));
+  test(SV("12.3457"), en_US, SV("{:.6L}"), F(1.234567e1));
+  test(SV("123.457"), en_US, SV("{:.6L}"), F(1.234567e2));
+  test(SV("1,234.57"), en_US, SV("{:.6L}"), F(1.234567e3));
+  test(SV("12,345.7"), en_US, SV("{:.6L}"), F(1.234567e4));
+  test(SV("123,457"), en_US, SV("{:.6L}"), F(1.234567e5));
+  test(SV("1.23457e+06"), en_US, SV("{:.6L}"), F(1.234567e6));
+  test(SV("1.23457e+07"), en_US, SV("{:.6L}"), F(1.234567e7));
+  test(SV("-1.23457e-06"), en_US, SV("{:.6L}"), F(-1.234567e-6));
+  test(SV("-1.23457e-05"), en_US, SV("{:.6L}"), F(-1.234567e-5));
+  test(SV("-0.000123457"), en_US, SV("{:.6L}"), F(-1.234567e-4));
+  test(SV("-0.00123457"), en_US, SV("{:.6L}"), F(-1.234567e-3));
+  test(SV("-0.0123457"), en_US, SV("{:.6L}"), F(-1.234567e-2));
+  test(SV("-0.123457"), en_US, SV("{:.6L}"), F(-1.234567e-1));
+  test(SV("-1.23457"), en_US, SV("{:.6L}"), F(-1.234567e0));
+  test(SV("-12.3457"), en_US, SV("{:.6L}"), F(-1.234567e1));
+  test(SV("-123.457"), en_US, SV("{:.6L}"), F(-1.234567e2));
+  test(SV("-1,234.57"), en_US, SV("{:.6L}"), F(-1.234567e3));
+  test(SV("-12,345.7"), en_US, SV("{:.6L}"), F(-1.234567e4));
+  test(SV("-123,457"), en_US, SV("{:.6L}"), F(-1.234567e5));
+  test(SV("-1.23457e+06"), en_US, SV("{:.6L}"), F(-1.234567e6));
+  test(SV("-1.23457e+07"), en_US, SV("{:.6L}"), F(-1.234567e7));
+
+  std::locale::global(en_US);
+  test(SV("1#23457e-06"), loc, SV("{:.6L}"), F(1.234567e-6));
+  test(SV("1#23457e-05"), loc, SV("{:.6L}"), F(1.234567e-5));
+  test(SV("0#000123457"), loc, SV("{:.6L}"), F(1.234567e-4));
+  test(SV("0#00123457"), loc, SV("{:.6L}"), F(1.234567e-3));
+  test(SV("0#0123457"), loc, SV("{:.6L}"), F(1.234567e-2));
+  test(SV("0#123457"), loc, SV("{:.6L}"), F(1.234567e-1));
+  test(SV("1#23457"), loc, SV("{:.6L}"), F(1.234567e0));
+  test(SV("1_2#3457"), loc, SV("{:.6L}"), F(1.234567e1));
+  test(SV("12_3#457"), loc, SV("{:.6L}"), F(1.234567e2));
+  test(SV("1_23_4#57"), loc, SV("{:.6L}"), F(1.234567e3));
+  test(SV("12_34_5#7"), loc, SV("{:.6L}"), F(1.234567e4));
+  test(SV("123_45_7"), loc, SV("{:.6L}"), F(1.234567e5));
+  test(SV("1#23457e+06"), loc, SV("{:.6L}"), F(1.234567e6));
+  test(SV("1#23457e+07"), loc, SV("{:.6L}"), F(1.234567e7));
+  test(SV("-1#23457e-06"), loc, SV("{:.6L}"), F(-1.234567e-6));
+  test(SV("-1#23457e-05"), loc, SV("{:.6L}"), F(-1.234567e-5));
+  test(SV("-0#000123457"), loc, SV("{:.6L}"), F(-1.234567e-4));
+  test(SV("-0#00123457"), loc, SV("{:.6L}"), F(-1.234567e-3));
+  test(SV("-0#0123457"), loc, SV("{:.6L}"), F(-1.234567e-2));
+  test(SV("-0#123457"), loc, SV("{:.6L}"), F(-1.234567e-1));
+  test(SV("-1#23457"), loc, SV("{:.6L}"), F(-1.234567e0));
+  test(SV("-1_2#3457"), loc, SV("{:.6L}"), F(-1.234567e1));
+  test(SV("-12_3#457"), loc, SV("{:.6L}"), F(-1.234567e2));
+  test(SV("-1_23_4#57"), loc, SV("{:.6L}"), F(-1.234567e3));
+  test(SV("-12_34_5#7"), loc, SV("{:.6L}"), F(-1.234567e4));
+  test(SV("-123_45_7"), loc, SV("{:.6L}"), F(-1.234567e5));
+  test(SV("-1#23457e+06"), loc, SV("{:.6L}"), F(-1.234567e6));
+  test(SV("-1#23457e+07"), loc, SV("{:.6L}"), F(-1.234567e7));
+
+  // *** Fill, align, zero padding ***
+  std::locale::global(en_US);
+  test(SV("1,234.57$$$"), SV("{:$<11.6L}"), F(1.234567e3));
+  test(SV("$$$1,234.57"), SV("{:$>11.6L}"), F(1.234567e3));
+  test(SV("$1,234.57$$"), SV("{:$^11.6L}"), F(1.234567e3));
+  test(SV("0001,234.57"), SV("{:011.6L}"), F(1.234567e3));
+  test(SV("-1,234.57$$$"), SV("{:$<12.6L}"), F(-1.234567e3));
+  test(SV("$$$-1,234.57"), SV("{:$>12.6L}"), F(-1.234567e3));
+  test(SV("$-1,234.57$$"), SV("{:$^12.6L}"), F(-1.234567e3));
+  test(SV("-0001,234.57"), SV("{:012.6L}"), F(-1.234567e3));
+
+  std::locale::global(loc);
+  test(SV("1_23_4#57$$$"), SV("{:$<12.6L}"), F(1.234567e3));
+  test(SV("$$$1_23_4#57"), SV("{:$>12.6L}"), F(1.234567e3));
+  test(SV("$1_23_4#57$$"), SV("{:$^12.6L}"), F(1.234567e3));
+  test(SV("0001_23_4#57"), SV("{:012.6L}"), F(1.234567e3));
+  test(SV("-1_23_4#57$$$"), SV("{:$<13.6L}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#57"), SV("{:$>13.6L}"), F(-1.234567e3));
+  test(SV("$-1_23_4#57$$"), SV("{:$^13.6L}"), F(-1.234567e3));
+  test(SV("-0001_23_4#57"), SV("{:013.6L}"), F(-1.234567e3));
+
+  test(SV("1,234.57$$$"), en_US, SV("{:$<11.6L}"), F(1.234567e3));
+  test(SV("$$$1,234.57"), en_US, SV("{:$>11.6L}"), F(1.234567e3));
+  test(SV("$1,234.57$$"), en_US, SV("{:$^11.6L}"), F(1.234567e3));
+  test(SV("0001,234.57"), en_US, SV("{:011.6L}"), F(1.234567e3));
+  test(SV("-1,234.57$$$"), en_US, SV("{:$<12.6L}"), F(-1.234567e3));
+  test(SV("$$$-1,234.57"), en_US, SV("{:$>12.6L}"), F(-1.234567e3));
+  test(SV("$-1,234.57$$"), en_US, SV("{:$^12.6L}"), F(-1.234567e3));
+  test(SV("-0001,234.57"), en_US, SV("{:012.6L}"), F(-1.234567e3));
+
+  std::locale::global(en_US);
+  test(SV("1_23_4#57$$$"), loc, SV("{:$<12.6L}"), F(1.234567e3));
+  test(SV("$$$1_23_4#57"), loc, SV("{:$>12.6L}"), F(1.234567e3));
+  test(SV("$1_23_4#57$$"), loc, SV("{:$^12.6L}"), F(1.234567e3));
+  test(SV("0001_23_4#57"), loc, SV("{:012.6L}"), F(1.234567e3));
+  test(SV("-1_23_4#57$$$"), loc, SV("{:$<13.6L}"), F(-1.234567e3));
+  test(SV("$$$-1_23_4#57"), loc, SV("{:$>13.6L}"), F(-1.234567e3));
+  test(SV("$-1_23_4#57$$"), loc, SV("{:$^13.6L}"), F(-1.234567e3));
+  test(SV("-0001_23_4#57"), loc, SV("{:013.6L}"), F(-1.234567e3));
+}
+
+template <class F, class CharT >
+void test_floating_point() {
+  test_floating_point_hex_lower_case<F, CharT>();
+  test_floating_point_hex_upper_case<F, CharT>();
+  test_floating_point_hex_lower_case_precision<F, CharT>();
+  test_floating_point_hex_upper_case_precision<F, CharT>();
+
+  test_floating_point_scientific_lower_case<F, CharT>();
+  test_floating_point_scientific_upper_case<F, CharT>();
+
+  test_floating_point_fixed_lower_case<F, CharT>();
+  test_floating_point_fixed_upper_case<F, CharT>();
+
+  test_floating_point_general_lower_case<F, CharT>();
+  test_floating_point_general_upper_case<F, CharT>();
+
+  test_floating_point_default<F, CharT>();
+  test_floating_point_default_precision<F, CharT>();
+}
+
+template <class CharT>
+void test() {
+  test_bool<CharT>();
+  test_integer<CharT>();
+  test_floating_point<float, CharT>();
+  test_floating_point<double, CharT>();
+  test_floating_point<long double, CharT>();
+}
+
+int main(int, char**) {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/unicode.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/unicode.pass.cpp
new file mode 100644
index 0000000..db659f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/unicode.pass.cpp
@@ -0,0 +1,305 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This version runs the test when the platform has Unicode support.
+// UNSUPPORTED: libcpp-has-no-unicode
+
+// TODO FMT Investigate Windows and AIX issues.
+// UNSUPPORTED msvc, target={{.+}}-windows-gnu
+// UNSUPPORTED: LIBCXX-AIX-FIXME
+
+// <format>
+
+// Tests the Unicode width support of the standard format specifiers.
+// It tests [format.string.std]/8 - 11:
+// - Properly determining the estimated with of a unicode string.
+// - Properly truncating to the wanted maximum width.
+
+// More specific extended grapheme cluster boundary rules are tested in
+// test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.pass.cpp
+// this test is based on test data provided by the Unicode Consortium.
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "make_string.h"
+#include "test_macros.h"
+#include "string_literal.h"
+#include "test_format_string.h"
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <iostream>
+#  include <type_traits>
+#endif
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template < class CharT, class... Args>
+void check(std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+#ifndef TEST_HAS_NO_LOCALIZATION
+  if constexpr (std::same_as<CharT, char>)
+    if (out != expected)
+      std::cerr << "\nFormat string   " << fmt.get() << "\nExpected output " << expected << "\nActual output   " << out
+                << '\n';
+#endif
+  assert(out == expected);
+};
+
+template <class CharT>
+static void test_single_code_point_fill() {
+  //*** 1-byte code points ***
+  check(SV("* *"), SV("{:*^3}"), SV(" "));
+  check(SV("*~*"), SV("{:*^3}"), SV("~"));
+
+  //*** 2-byte code points ***
+  check(SV("*\u00a1*"), SV("{:*^3}"), SV("\u00a1")); // INVERTED EXCLAMATION MARK
+  check(SV("*\u07ff*"), SV("{:*^3}"), SV("\u07ff")); // NKO TAMAN SIGN
+
+  //*** 3-byte code points ***
+  check(SV("*\u0800*"), SV("{:*^3}"), SV("\u0800")); // SAMARITAN LETTER ALAF
+  check(SV("*\ufffd*"), SV("{:*^3}"), SV("\ufffd")); // REPLACEMENT CHARACTER
+
+  // 2 column ranges
+  check(SV("*\u1100*"), SV("{:*^4}"), SV("\u1100")); // HANGUL CHOSEONG KIYEOK
+  check(SV("*\u115f*"), SV("{:*^4}"), SV("\u115f")); // HANGUL CHOSEONG FILLER
+
+  check(SV("*\u2329*"), SV("{:*^4}"), SV("\u2329")); // LEFT-POINTING ANGLE BRACKET
+  check(SV("*\u232a*"), SV("{:*^4}"), SV("\u232a")); // RIGHT-POINTING ANGLE BRACKET
+
+  check(SV("*\u2e80*"), SV("{:*^4}"), SV("\u2e80")); // CJK RADICAL REPEAT
+  check(SV("*\u303e*"), SV("{:*^4}"), SV("\u303e")); // IDEOGRAPHIC VARIATION INDICATOR
+
+  check(SV("*\u3040*"), SV("{:*^4}"), SV("\u3040")); // U+3041 HIRAGANA LETTER SMALL A
+  check(SV("*\ua4cf*"), SV("{:*^4}"), SV("\ua4cf")); // U+A4D0 LISU LETTER BA
+
+  check(SV("*\uac00*"), SV("{:*^4}"), SV("\uac00")); // <Hangul Syllable, First>
+  check(SV("*\ud7a3*"), SV("{:*^4}"), SV("\ud7a3")); // Hangul Syllable Hih
+
+  check(SV("*\uf900*"), SV("{:*^4}"), SV("\uf900")); // CJK COMPATIBILITY IDEOGRAPH-F900
+  check(SV("*\ufaff*"), SV("{:*^4}"), SV("\ufaff")); // U+FB00 LATIN SMALL LIGATURE FF
+
+  check(SV("*\ufe10*"), SV("{:*^4}"), SV("\ufe10")); // PRESENTATION FORM FOR VERTICAL COMMA
+  check(SV("*\ufe19*"), SV("{:*^4}"), SV("\ufe19")); // PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
+
+  check(SV("*\ufe30*"), SV("{:*^4}"), SV("\ufe30")); // PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
+  check(SV("*\ufe6f*"), SV("{:*^4}"), SV("\ufe6f")); // U+FE70 ARABIC FATHATAN ISOLATED FORM
+
+  check(SV("*\uff00*"), SV("{:*^4}"), SV("\uff00")); // U+FF01 FULLWIDTH EXCLAMATION MARK
+  check(SV("*\uff60*"), SV("{:*^4}"), SV("\uff60")); // FULLWIDTH RIGHT WHITE PARENTHESIS
+
+  check(SV("*\uffe0*"), SV("{:*^4}"), SV("\uffe0")); // FULLWIDTH CENT SIGN
+  check(SV("*\uffe6*"), SV("{:*^4}"), SV("\uffe6")); // FULLWIDTH WON SIGN
+
+  //*** 4-byte code points ***
+  check(SV("*\U00010000*"), SV("{:*^3}"), SV("\U00010000")); // LINEAR B SYLLABLE B008 A
+  check(SV("*\U0010FFFF*"), SV("{:*^3}"), SV("\U0010FFFF")); // Undefined Character
+
+  // 2 column ranges
+  check(SV("*\U0001f300*"), SV("{:*^4}"), SV("\U0001f300")); // CYCLONE
+  check(SV("*\U0001f64f*"), SV("{:*^4}"), SV("\U0001f64f")); // PERSON WITH FOLDED HANDS
+  check(SV("*\U0001f900*"), SV("{:*^4}"), SV("\U0001f900")); // CIRCLED CROSS FORMEE WITH FOUR DOTS
+  check(SV("*\U0001f9ff*"), SV("{:*^4}"), SV("\U0001f9ff")); // NAZAR AMULET
+  check(SV("*\U00020000*"), SV("{:*^4}"), SV("\U00020000")); // <CJK Ideograph Extension B, First>
+  check(SV("*\U0002fffd*"), SV("{:*^4}"), SV("\U0002fffd")); // Undefined Character
+  check(SV("*\U00030000*"), SV("{:*^4}"), SV("\U00030000")); // <CJK Ideograph Extension G, First>
+  check(SV("*\U0003fffd*"), SV("{:*^4}"), SV("\U0003fffd")); // Undefined Character
+}
+
+// One column output is unaffected.
+// Two column output is removed, thus the result is only the fill character.
+template <class CharT>
+static void test_single_code_point_truncate() {
+  //*** 1-byte code points ***
+  check(SV("* *"), SV("{:*^3.1}"), SV(" "));
+  check(SV("*~*"), SV("{:*^3.1}"), SV("~"));
+
+  //*** 2-byte code points ***
+  check(SV("*\u00a1*"), SV("{:*^3.1}"), SV("\u00a1")); // INVERTED EXCLAMATION MARK
+  check(SV("*\u07ff*"), SV("{:*^3.1}"), SV("\u07ff")); // NKO TAMAN SIGN
+
+  //*** 3.1-byte code points ***
+  check(SV("*\u0800*"), SV("{:*^3.1}"), SV("\u0800")); // SAMARITAN LETTER ALAF
+  check(SV("*\ufffd*"), SV("{:*^3.1}"), SV("\ufffd")); // REPLACEMENT CHARACTER
+
+  // 2 column ranges
+  check(SV("***"), SV("{:*^3.1}"), SV("\u1100")); // HANGUL CHOSEONG KIYEOK
+  check(SV("***"), SV("{:*^3.1}"), SV("\u115f")); // HANGUL CHOSEONG FILLER
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\u2329")); // LEFT-POINTING ANGLE BRACKET
+  check(SV("***"), SV("{:*^3.1}"), SV("\u232a")); // RIGHT-POINTING ANGLE BRACKET
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\u2e80")); // CJK RADICAL REPEAT
+  check(SV("***"), SV("{:*^3.1}"), SV("\u303e")); // IDEOGRAPHIC VARIATION INDICATOR
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\u3040")); // U+3041 HIRAGANA LETTER SMALL A
+  check(SV("***"), SV("{:*^3.1}"), SV("\ua4cf")); // U+A4D0 LISU LETTER BA
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\uac00")); // <Hangul Syllable, First>
+  check(SV("***"), SV("{:*^3.1}"), SV("\ud7a3")); // Hangul Syllable Hih
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\uf900")); // CJK COMPATIBILITY IDEOGRAPH-F900
+  check(SV("***"), SV("{:*^3.1}"), SV("\ufaff")); // U+FB00 LATIN SMALL LIGATURE FF
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\ufe10")); // PRESENTATION FORM FOR VERTICAL COMMA
+  check(SV("***"), SV("{:*^3.1}"), SV("\ufe19")); // PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\ufe30")); // PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
+  check(SV("***"), SV("{:*^3.1}"), SV("\ufe6f")); // U+FE70 ARABIC FATHATAN ISOLATED FORM
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\uff00")); // U+FF01 FULLWIDTH EXCLAMATION MARK
+  check(SV("***"), SV("{:*^3.1}"), SV("\uff60")); // FULLWIDTH RIGHT WHITE PARENTHESIS
+
+  check(SV("***"), SV("{:*^3.1}"), SV("\uffe0")); // FULLWIDTH CENT SIGN
+  check(SV("***"), SV("{:*^3.1}"), SV("\uffe6")); // FULLWIDTH WON SIGN
+
+  //*** 3.1-byte code points ***
+  check(SV("*\U00010000*"), SV("{:*^3.1}"), SV("\U00010000")); // LINEAR B SYLLABLE B008 A
+  check(SV("*\U0010FFFF*"), SV("{:*^3.1}"), SV("\U0010FFFF")); // Undefined Character
+
+  // 2 column ranges
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0001f300")); // CYCLONE
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0001f64f")); // PERSON WITH FOLDED HANDS
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0001f900")); // CIRCLED CROSS FORMEE WITH FOUR DOTS
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0001f9ff")); // NAZAR AMULET
+  check(SV("***"), SV("{:*^3.1}"), SV("\U00020000")); // <CJK Ideograph Extension B, First>
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0002fffd")); // Undefined Character
+  check(SV("***"), SV("{:*^3.1}"), SV("\U00030000")); // <CJK Ideograph Extension G, First>
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0003fffd")); // Undefined Character
+}
+
+// The examples used in that paper.
+template <class CharT>
+static void test_P1868() {
+  // Fill
+  check(SV("*\u0041*"), SV("{:*^3}"), SV("\u0041")); // { LATIN CAPITAL LETTER A }
+  check(SV("*\u00c1*"), SV("{:*^3}"), SV("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
+  check(SV("*\u0041\u0301*"),
+        SV("{:*^3}"),
+        SV("\u0041\u0301"));                         // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
+  check(SV("*\u0132*"), SV("{:*^3}"), SV("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
+  check(SV("*\u0394*"), SV("{:*^3}"), SV("\u0394")); // { GREEK CAPITAL LETTER DELTA }
+
+  check(SV("*\u0429*"), SV("{:*^3}"), SV("\u0429"));         // { CYRILLIC CAPITAL LETTER SHCHA }
+  check(SV("*\u05d0*"), SV("{:*^3}"), SV("\u05d0"));         // { HEBREW LETTER ALEF }
+  check(SV("*\u0634*"), SV("{:*^3}"), SV("\u0634"));         // { ARABIC LETTER SHEEN }
+  check(SV("*\u3009*"), SV("{:*^4}"), SV("\u3009"));         // { RIGHT-POINTING ANGLE BRACKET }
+  check(SV("*\u754c*"), SV("{:*^4}"), SV("\u754c"));         // { CJK Unified Ideograph-754C }
+  check(SV("*\U0001f921*"), SV("{:*^4}"), SV("\U0001f921")); // { UNICORN FACE }
+  check(SV("*\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466*"),
+        SV("{:*^4}"),
+        SV("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
+
+  // Truncate to 1 column: 1 column grapheme clusters are kept together.
+  check(SV("*\u0041*"), SV("{:*^3.1}"), SV("\u0041")); // { LATIN CAPITAL LETTER A }
+  check(SV("*\u00c1*"), SV("{:*^3.1}"), SV("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
+  check(SV("*\u0041\u0301*"),
+        SV("{:*^3.1}"),
+        SV("\u0041\u0301"));                           // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
+  check(SV("*\u0132*"), SV("{:*^3.1}"), SV("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
+  check(SV("*\u0394*"), SV("{:*^3.1}"), SV("\u0394")); // { GREEK CAPITAL LETTER DELTA }
+
+  check(SV("*\u0429*"), SV("{:*^3.1}"), SV("\u0429")); // { CYRILLIC CAPITAL LETTER SHCHA }
+  check(SV("*\u05d0*"), SV("{:*^3.1}"), SV("\u05d0")); // { HEBREW LETTER ALEF }
+  check(SV("*\u0634*"), SV("{:*^3.1}"), SV("\u0634")); // { ARABIC LETTER SHEEN }
+  check(SV("***"), SV("{:*^3.1}"), SV("\u3009"));      // { RIGHT-POINTING ANGLE BRACKET }
+  check(SV("***"), SV("{:*^3.1}"), SV("\u754c"));      // { CJK Unified Ideograph-754C }
+  check(SV("***"), SV("{:*^3.1}"), SV("\U0001f921"));  // { UNICORN FACE }
+  check(SV("***"),
+        SV("{:*^3.1}"),
+        SV("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
+
+  // Truncate to 2 column: 2 column grapheme clusters are kept together.
+  check(SV("*\u0041*"), SV("{:*^3.2}"), SV("\u0041")); // { LATIN CAPITAL LETTER A }
+  check(SV("*\u00c1*"), SV("{:*^3.2}"), SV("\u00c1")); // { LATIN CAPITAL LETTER A WITH ACUTE }
+  check(SV("*\u0041\u0301*"),
+        SV("{:*^3.2}"),
+        SV("\u0041\u0301"));                           // { LATIN CAPITAL LETTER A } { COMBINING ACUTE ACCENT }
+  check(SV("*\u0132*"), SV("{:*^3.2}"), SV("\u0132")); // { LATIN CAPITAL LIGATURE IJ }
+  check(SV("*\u0394*"), SV("{:*^3.2}"), SV("\u0394")); // { GREEK CAPITAL LETTER DELTA }
+
+  check(SV("*\u0429*"), SV("{:*^3.2}"), SV("\u0429"));         // { CYRILLIC CAPITAL LETTER SHCHA }
+  check(SV("*\u05d0*"), SV("{:*^3.2}"), SV("\u05d0"));         // { HEBREW LETTER ALEF }
+  check(SV("*\u0634*"), SV("{:*^3.2}"), SV("\u0634"));         // { ARABIC LETTER SHEEN }
+  check(SV("*\u3009*"), SV("{:*^4.2}"), SV("\u3009"));         // { RIGHT-POINTING ANGLE BRACKET }
+  check(SV("*\u754c*"), SV("{:*^4.2}"), SV("\u754c"));         // { CJK Unified Ideograph-754C }
+  check(SV("*\U0001f921*"), SV("{:*^4.2}"), SV("\U0001f921")); // { UNICORN FACE }
+  check(SV("*\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466*"),
+        SV("{:*^4.2}"),
+        SV("\U0001f468\u200d\U0001F469\u200d\U0001F467\u200d\U0001F466")); // { Family: Man, Woman, Girl, Boy }
+}
+
+#ifdef _LIBCPP_VERSION
+// Tests the libc++ specific behaviour for malformed UTF-sequences. The
+// Standard doesn't specify how to handle this.
+template <class CharT>
+static void test_malformed_code_point() {
+  if constexpr (sizeof(CharT) == 1) {
+    // Malformed at end.
+    check(SV("*ZZZZ\x8f*"), SV("{:*^7}"), SV("ZZZZ\x8f"));
+    check(SV("*ZZZZ\xcf*"), SV("{:*^7}"), SV("ZZZZ\xcf"));
+    check(SV("*ZZZZ\xef*"), SV("{:*^7}"), SV("ZZZZ\xef"));
+    check(SV("*ZZZZ\xff*"), SV("{:*^7}"), SV("ZZZZ\xff"));
+
+    // Malformed in middle, no continuation
+    check(SV("*ZZZZ\x8fZ*"), SV("{:*^8}"), SV("ZZZZ\x8fZ"));
+    check(SV("*ZZZZ\xcfZ*"), SV("{:*^8}"), SV("ZZZZ\xcfZ"));
+    check(SV("*ZZZZ\xefZ*"), SV("{:*^8}"), SV("ZZZZ\xefZ"));
+    check(SV("*ZZZZ\xffZ*"), SV("{:*^8}"), SV("ZZZZ\xffZ"));
+
+    check(SV("*ZZZZ\x8fZZ*"), SV("{:*^9}"), SV("ZZZZ\x8fZZ"));
+    check(SV("*ZZZZ\xcfZZ*"), SV("{:*^9}"), SV("ZZZZ\xcfZZ"));
+    check(SV("*ZZZZ\xefZZ*"), SV("{:*^9}"), SV("ZZZZ\xefZZ"));
+    check(SV("*ZZZZ\xffZZ*"), SV("{:*^9}"), SV("ZZZZ\xffZZ"));
+
+    check(SV("*ZZZZ\x8fZZZ*"), SV("{:*^10}"), SV("ZZZZ\x8fZZZ"));
+    check(SV("*ZZZZ\xcfZZZ*"), SV("{:*^10}"), SV("ZZZZ\xcfZZZ"));
+    check(SV("*ZZZZ\xefZZZ*"), SV("{:*^10}"), SV("ZZZZ\xefZZZ"));
+    check(SV("*ZZZZ\xffZZZ*"), SV("{:*^10}"), SV("ZZZZ\xffZZZ"));
+
+    check(SV("*ZZZZ\x8fZZZZ*"), SV("{:*^11}"), SV("ZZZZ\x8fZZZZ"));
+    check(SV("*ZZZZ\xcfZZZZ*"), SV("{:*^11}"), SV("ZZZZ\xcfZZZZ"));
+    check(SV("*ZZZZ\xefZZZZ*"), SV("{:*^11}"), SV("ZZZZ\xefZZZZ"));
+    check(SV("*ZZZZ\xffZZZZ*"), SV("{:*^11}"), SV("ZZZZ\xffZZZZ"));
+
+    // Premature end.
+    check(SV("*ZZZZ\xef\xf5*"), SV("{:*^8}"), SV("ZZZZ\xef\xf5"));
+    check(SV("*ZZZZ\xef\xf5ZZZZ*"), SV("{:*^12}"), SV("ZZZZ\xef\xf5ZZZZ"));
+    check(SV("*ZZZZ\xff\xf5\xf5*"), SV("{:*^9}"), SV("ZZZZ\xff\xf5\xf5"));
+    check(SV("*ZZZZ\xff\xf5\xf5ZZZZ*"), SV("{:*^13}"), SV("ZZZZ\xff\xf5\xf5ZZZZ"));
+
+  } else if constexpr (sizeof(CharT) == 2) {
+    // TODO FMT Add these tests.
+  }
+  // UTF-32 doesn't combine characters, thus no corruption tests.
+}
+#endif
+
+template <class CharT>
+static void test() {
+  test_single_code_point_fill<CharT>();
+  test_single_code_point_truncate<CharT>();
+  test_P1868<CharT>();
+
+#ifdef _LIBCPP_VERSION
+  test_malformed_code_point<CharT>();
+#endif
+}
+
+int main(int, char**) {
+  test<char>();
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat.locale.pass.cpp
new file mode 100644
index 0000000..90c56df
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat.locale.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// string vformat(const locale& loc, string_view fmt, format_args args);
+// wstring vformat(const locale& loc, wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr {
+  std::basic_string<CharT> out = std::vformat(std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch ([[maybe_unused]] const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char, execution_modus::full>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::full>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat.pass.cpp
new file mode 100644
index 0000000..236d83e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch ([[maybe_unused]] const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char, execution_modus::full>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::full>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat_to.locale.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat_to.locale.pass.cpp
new file mode 100644
index 0000000..993f19a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat_to.locale.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: no-localization
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class Out>
+//   Out vformat_to(Out out, const locale& loc, string_view fmt,
+//                  format_args args);
+// template<class Out>
+//    Out vformat_to(Out out, const locale& loc, wstring_view fmt,
+//                   wformat_args args);
+
+#include <format>
+#include <algorithm>
+#include <cassert>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr {
+  {
+    std::basic_string<CharT> out(expected.size(), CharT(' '));
+    auto it = std::vformat_to(out.begin(), std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(it == out.end());
+    assert(out == expected);
+  }
+  {
+    std::list<CharT> out;
+    std::vformat_to(std::back_inserter(out), std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+  }
+  {
+    std::vector<CharT> out;
+    std::vformat_to(std::back_inserter(out), std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+  }
+  {
+    assert(expected.size() < 4096 && "Update the size of the buffer.");
+    CharT out[4096];
+    CharT* it = std::vformat_to(out, std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(std::distance(out, it) == int(expected.size()));
+    // Convert to std::string since output contains '\0' for boolean tests.
+    assert(std::basic_string<CharT>(out, it) == expected);
+  }
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        std::basic_string<CharT> out;
+        std::vformat_to(std::back_inserter(out), std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
+        assert(false);
+      } catch ([[maybe_unused]] const std::format_error& e) {
+        LIBCPP_ASSERT(e.what() == what);
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat_to.pass.cpp
new file mode 100644
index 0000000..0574d49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.functions/vformat_to.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// <format>
+
+// template<class Out>
+//   Out vformat_to(Out out, string_view fmt, format_args args);
+// template<class Out>
+//    Out vformat_to(Out out, wstring_view fmt, wformat_args_t args);
+
+#include <format>
+#include <algorithm>
+#include <cassert>
+#include <list>
+#include <vector>
+
+#include "test_macros.h"
+#include "format_tests.h"
+#include "string_literal.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) constexpr {
+  {
+    std::basic_string<CharT> out(expected.size(), CharT(' '));
+    auto it = std::vformat_to(out.begin(), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(it == out.end());
+    assert(out == expected);
+  }
+  {
+    std::list<CharT> out;
+    std::vformat_to(std::back_inserter(out), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+  }
+  {
+    std::vector<CharT> out;
+    std::vformat_to(std::back_inserter(out), fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(std::equal(out.begin(), out.end(), expected.begin(), expected.end()));
+  }
+  {
+    assert(expected.size() < 4096 && "Update the size of the buffer.");
+    CharT out[4096];
+    CharT* it = std::vformat_to(out, fmt, std::make_format_args<context_t<CharT>>(args...));
+    assert(std::distance(out, it) == int(expected.size()));
+    // Convert to std::string since output contains '\0' for boolean tests.
+    assert(std::basic_string<CharT>(out, it) == expected);
+  }
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        std::basic_string<CharT> out;
+        std::vformat_to(std::back_inserter(out), fmt, std::make_format_args<context_t<CharT>>(args...));
+        assert(false);
+      } catch ([[maybe_unused]] const std::format_error& e) {
+        LIBCPP_ASSERT(e.what() == what);
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char, execution_modus::partial>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests_char_to_wchar_t(test);
+  format_tests<wchar_t, execution_modus::partial>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/format_kind.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/format_kind.compile.pass.cpp
new file mode 100644
index 0000000..d343ad1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/format_kind.compile.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// template<ranges::input_range R>
+//     requires same_as<R, remove_cvref_t<R>>
+//  constexpr range_format format_kind<R> = see below;
+
+#include <format>
+
+#include <array>
+#include <deque>
+#include <format>
+#include <forward_list>
+#include <iterator>
+#include <list>
+#include <map>
+#include <ranges>
+#include <set>
+#include <span>
+#include <vector>
+#include <unordered_map>
+#include <unordered_set>
+#include <valarray>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
+#  include <filesystem>
+#endif
+
+// [format.range.fmtkind]
+// If same_as<remove_cvref_t<ranges::range_reference_t<R>>, R> is true,
+// format_kind<R> is range_format::disabled.
+// [Note 1: This prevents constraint recursion for ranges whose reference type
+// is the same range type. For example, std::filesystem::path is a range of
+// std::filesystem::path. - end note]
+struct recursive_range {
+  struct iterator {
+    using iterator_concept = std::input_iterator_tag;
+    using value_type       = recursive_range;
+    using difference_type  = ptrdiff_t;
+    using reference        = recursive_range;
+
+    reference operator*() const;
+
+    iterator& operator++();
+    iterator operator++(int);
+
+    friend bool operator==(const iterator&, const iterator&);
+  };
+
+  iterator begin();
+  iterator end();
+};
+
+static_assert(std::ranges::input_range<recursive_range>, "format_kind requires an input range");
+static_assert(std::format_kind<recursive_range> == std::range_format::disabled);
+
+#ifndef TEST_HAS_NO_FILESYSTEM_LIBRARY
+static_assert(std::format_kind<std::filesystem::path> == std::range_format::disabled);
+#endif
+
+static_assert(std::format_kind<std::map<int, int>> == std::range_format::map);
+static_assert(std::format_kind<std::multimap<int, int>> == std::range_format::map);
+static_assert(std::format_kind<std::unordered_map<int, int>> == std::range_format::map);
+static_assert(std::format_kind<std::unordered_multimap<int, int>> == std::range_format::map);
+
+static_assert(std::format_kind<std::set<int>> == std::range_format::set);
+static_assert(std::format_kind<std::multiset<int>> == std::range_format::set);
+static_assert(std::format_kind<std::unordered_set<int>> == std::range_format::set);
+static_assert(std::format_kind<std::unordered_multiset<int>> == std::range_format::set);
+
+static_assert(std::format_kind<std::array<int, 1>> == std::range_format::sequence);
+static_assert(std::format_kind<std::vector<int>> == std::range_format::sequence);
+static_assert(std::format_kind<std::deque<int>> == std::range_format::sequence);
+static_assert(std::format_kind<std::forward_list<int>> == std::range_format::sequence);
+static_assert(std::format_kind<std::list<int>> == std::range_format::sequence);
+
+static_assert(std::format_kind<std::span<int>> == std::range_format::sequence);
+
+static_assert(std::format_kind<std::valarray<int>> == std::range_format::sequence);
+
+// [format.range.fmtkind]/3
+//   Remarks: Pursuant to [namespace.std], users may specialize format_kind for
+//   cv-unqualified program-defined types that model ranges::input_range. Such
+//   specializations shall be usable in constant expressions ([expr.const]) and
+//   have type const range_format.
+// Note only test the specializing, not all constraints.
+struct no_specialization : std::ranges::view_base {
+  using key_type = void;
+  int* begin() const;
+  int* end() const;
+};
+static_assert(std::format_kind<no_specialization> == std::range_format::set);
+
+// The struct's "contents" are the same as no_specialization.
+struct specialized : std::ranges::view_base {
+  using key_type = void;
+  int* begin() const;
+  int* end() const;
+};
+
+template <>
+constexpr std::range_format std::format_kind<specialized> = std::range_format::sequence;
+static_assert(std::format_kind<specialized> == std::range_format::sequence);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/format_kind.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/format_kind.verify.cpp
new file mode 100644
index 0000000..f95ea23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/format_kind.verify.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// template<ranges::input_range R>
+//   requires same_as<R, remove_cvref_t<R>>
+// constexpr range_format format_kind<R> = see below;
+
+#include <format>
+
+#include <array>
+#include <queue>
+#include <stack>
+#include <tuple>
+#include <utility>
+
+#include "test_macros.h"
+
+constexpr std::range_format valid = std::format_kind<std::array<int, 1>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format invalid_due_to_const = std::format_kind<const std::array<int, 1>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format invalid_due_to_volatile = std::format_kind<volatile std::array<int, 1>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format invalid_due_to_reference = std::format_kind<std::array<int, 1>&>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format invalid_no_input_range = std::format_kind<int>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_stack = std::format_kind<std::stack<int>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_queue = std::format_kind<std::queue<int>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_priority_queue = std::format_kind<std::priority_queue<int>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_pair = std::format_kind<std::pair<int, int>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_tuple_1 = std::format_kind<std::tuple<int>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_tuple_2 = std::format_kind<std::tuple<int, int>>;
+
+// expected-error@*:* {{create a template specialization of format_kind for your type}}
+constexpr std::range_format not_a_range_tuple_3 = std::format_kind<std::tuple<int, int, int>>;
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/range_format.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/range_format.compile.pass.cpp
new file mode 100644
index 0000000..df127d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtkind/range_format.compile.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// enum class range_format {
+//   disabled,
+//   map,
+//   set,
+//   sequence,
+//   string,
+//   debug_string
+// };
+
+#include <format>
+
+// test that the enumeration values exist
+static_assert(requires { std::range_format::disabled; });
+static_assert(requires { std::range_format::map; });
+static_assert(requires { std::range_format::set; });
+static_assert(requires { std::range_format::sequence; });
+static_assert(requires { std::range_format::string; });
+static_assert(requires { std::range_format::debug_string; });
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.format.pass.cpp
new file mode 100644
index 0000000..b2e65ec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.format.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::map, R, charT>
+//
+// template<class... Args>
+//   string format(format_string<Args...> fmt, Args&&... args);
+// template<class... Args>
+//   wstring format(wformat_string<Args...> fmt, Args&&... args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+};
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.tests.h b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.tests.h
new file mode 100644
index 0000000..005a2bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.tests.h
@@ -0,0 +1,841 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FMTMAP_FORMAT_FUNCTIONS_TESTS_H
+#define TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FMTMAP_FORMAT_FUNCTIONS_TESTS_H
+
+#include <algorithm>
+#include <format>
+#include <map>
+#include <unordered_map>
+
+#include "format.functions.common.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+//
+// Char
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char(TestFunction check, ExceptionTest check_exception) {
+  std::map<CharT, CharT> input{{CharT('a'), CharT('A')}, {CharT('c'), CharT('C')}, {CharT('b'), CharT('B')}};
+
+  check(SV("{a: A, b: B, c: C}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{a: A, b: B, c: C}     "), SV("{:23}"), input);
+  check(SV("{a: A, b: B, c: C}*****"), SV("{:*<23}"), input);
+  check(SV("__{a: A, b: B, c: C}___"), SV("{:_^23}"), input);
+  check(SV("#####{a: A, b: B, c: C}"), SV("{:#>23}"), input);
+
+  check(SV("{a: A, b: B, c: C}     "), SV("{:{}}"), input, 23);
+  check(SV("{a: A, b: B, c: C}*****"), SV("{:*<{}}"), input, 23);
+  check(SV("__{a: A, b: B, c: C}___"), SV("{:_^{}}"), input, 23);
+  check(SV("#####{a: A, b: B, c: C}"), SV("{:#>{}}"), input, 23);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__a: A, b: B, c: C___"), SV("{:_^21n}"), input);
+
+  // *** type ***
+  check(SV("__{a: A, b: B, c: C}___"), SV("{:_^23m}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+
+  check(SV("{'a': 'A'     , 'b': 'B'     , 'c': 'C'     }"), SV("{::13}"), input);
+  check(SV("{'a': 'A'*****, 'b': 'B'*****, 'c': 'C'*****}"), SV("{::*<13}"), input);
+  check(SV("{__'a': 'A'___, __'b': 'B'___, __'c': 'C'___}"), SV("{::_^13}"), input);
+  check(SV("{#####'a': 'A', #####'b': 'B', #####'c': 'C'}"), SV("{::#>13}"), input);
+
+  check(SV("{'a': 'A'     , 'b': 'B'     , 'c': 'C'     }"), SV("{::{}}"), input, 13);
+  check(SV("{'a': 'A'*****, 'b': 'B'*****, 'c': 'C'*****}"), SV("{::*<{}}"), input, 13);
+  check(SV("{__'a': 'A'___, __'b': 'B'___, __'c': 'C'___}"), SV("{::_^{}}"), input, 13);
+  check(SV("{#####'a': 'A', #####'b': 'B', #####'c': 'C'}"), SV("{::#>{}}"), input, 13);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("{'a': 'A', 'b': 'B', 'c': 'C'}"), SV("{::m}"), input);
+  check(SV("{'a': 'A', 'b': 'B', 'c': 'C'}"), SV("{::n}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###'a': 'A', ###'b': 'B', ###'c': 'C'}^^^"), SV("{:^^44:#>11}"), input);
+  check(SV("^^{###'a': 'A', ###'b': 'B', ###'c': 'C'}^^^"), SV("{:^^{}:#>11}"), input, 44);
+  check(SV("^^{###'a': 'A', ###'b': 'B', ###'c': 'C'}^^^"), SV("{:^^{}:#>{}}"), input, 44, 11);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>11}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 44);
+}
+
+//
+// char -> wchar_t
+//
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <class TestFunction, class ExceptionTest>
+void test_char_to_wchar(TestFunction check, ExceptionTest check_exception) {
+  std::map<char, char> input{{'a', 'A'}, {'c', 'C'}, {'b', 'B'}};
+
+  using CharT = wchar_t;
+  check(SV("{a: A, b: B, c: C}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{a: A, b: B, c: C}     "), SV("{:23}"), input);
+  check(SV("{a: A, b: B, c: C}*****"), SV("{:*<23}"), input);
+  check(SV("__{a: A, b: B, c: C}___"), SV("{:_^23}"), input);
+  check(SV("#####{a: A, b: B, c: C}"), SV("{:#>23}"), input);
+
+  check(SV("{a: A, b: B, c: C}     "), SV("{:{}}"), input, 23);
+  check(SV("{a: A, b: B, c: C}*****"), SV("{:*<{}}"), input, 23);
+  check(SV("__{a: A, b: B, c: C}___"), SV("{:_^{}}"), input, 23);
+  check(SV("#####{a: A, b: B, c: C}"), SV("{:#>{}}"), input, 23);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__a: A, b: B, c: C___"), SV("{:_^21n}"), input);
+
+  // *** type ***
+  check(SV("__{a: A, b: B, c: C}___"), SV("{:_^23m}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{'a': 'A'     , 'b': 'B'     , 'c': 'C'     }"), SV("{::13}"), input);
+  check(SV("{'a': 'A'*****, 'b': 'B'*****, 'c': 'C'*****}"), SV("{::*<13}"), input);
+  check(SV("{__'a': 'A'___, __'b': 'B'___, __'c': 'C'___}"), SV("{::_^13}"), input);
+  check(SV("{#####'a': 'A', #####'b': 'B', #####'c': 'C'}"), SV("{::#>13}"), input);
+
+  check(SV("{'a': 'A'     , 'b': 'B'     , 'c': 'C'     }"), SV("{::{}}"), input, 13);
+  check(SV("{'a': 'A'*****, 'b': 'B'*****, 'c': 'C'*****}"), SV("{::*<{}}"), input, 13);
+  check(SV("{__'a': 'A'___, __'b': 'B'___, __'c': 'C'___}"), SV("{::_^{}}"), input, 13);
+  check(SV("{#####'a': 'A', #####'b': 'B', #####'c': 'C'}"), SV("{::#>{}}"), input, 13);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("{'a': 'A', 'b': 'B', 'c': 'C'}"), SV("{::m}"), input);
+  check(SV("{'a': 'A', 'b': 'B', 'c': 'C'}"), SV("{::n}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###'a': 'A', ###'b': 'B', ###'c': 'C'}^^^"), SV("{:^^44:#>11}"), input);
+  check(SV("^^{###'a': 'A', ###'b': 'B', ###'c': 'C'}^^^"), SV("{:^^{}:#>11}"), input, 44);
+  check(SV("^^{###'a': 'A', ###'b': 'B', ###'c': 'C'}^^^"), SV("{:^^{}:#>{}}"), input, 44, 11);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>11}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 44);
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+//
+// Bool
+//
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_bool(TestFunction check, ExceptionTest check_exception) {
+  // duplicates are stored in order of insertion
+  std::multimap<bool, int> input{{true, 42}, {false, 0}, {true, 1}};
+
+  check(SV("{false: 0, true: 42, true: 1}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{false: 0, true: 42, true: 1}     "), SV("{:34}"), input);
+  check(SV("{false: 0, true: 42, true: 1}*****"), SV("{:*<34}"), input);
+  check(SV("__{false: 0, true: 42, true: 1}___"), SV("{:_^34}"), input);
+  check(SV("#####{false: 0, true: 42, true: 1}"), SV("{:#>34}"), input);
+
+  check(SV("{false: 0, true: 42, true: 1}     "), SV("{:{}}"), input, 34);
+  check(SV("{false: 0, true: 42, true: 1}*****"), SV("{:*<{}}"), input, 34);
+  check(SV("__{false: 0, true: 42, true: 1}___"), SV("{:_^{}}"), input, 34);
+  check(SV("#####{false: 0, true: 42, true: 1}"), SV("{:#>{}}"), input, 34);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__false: 0, true: 42, true: 1___"), SV("{:_^32n}"), input);
+
+  // *** type ***
+  check(SV("__{false: 0, true: 42, true: 1}___"), SV("{:_^34m}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{false: 0  , true: 42  , true: 1   }"), SV("{::10}"), input);
+  check(SV("{false: 0**, true: 42**, true: 1***}"), SV("{::*<10}"), input);
+  check(SV("{_false: 0_, _true: 42_, _true: 1__}"), SV("{::_^10}"), input);
+  check(SV("{##false: 0, ##true: 42, ###true: 1}"), SV("{::#>10}"), input);
+
+  check(SV("{false: 0  , true: 42  , true: 1   }"), SV("{::{}}"), input, 10);
+  check(SV("{false: 0**, true: 42**, true: 1***}"), SV("{::*<{}}"), input, 10);
+  check(SV("{_false: 0_, _true: 42_, _true: 1__}"), SV("{::_^{}}"), input, 10);
+  check(SV("{##false: 0, ##true: 42, ###true: 1}"), SV("{::#>{}}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{##false: 0, ##true: 42, ###true: 1}^^^"), SV("{:^^41:#>10}"), input);
+  check(SV("^^{##false: 0, ##true: 42, ###true: 1}^^^"), SV("{:^^{}:#>10}"), input, 41);
+  check(SV("^^{##false: 0, ##true: 42, ###true: 1}^^^"), SV("{:^^{}:#>{}}"), input, 41, 10);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>10}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 41);
+}
+
+//
+// Integral
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("{-42: 42, 1: -1, 42: -42}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{-42: 42, 1: -1, 42: -42}     "), SV("{:30}"), input);
+  check(SV("{-42: 42, 1: -1, 42: -42}*****"), SV("{:*<30}"), input);
+  check(SV("__{-42: 42, 1: -1, 42: -42}___"), SV("{:_^30}"), input);
+  check(SV("#####{-42: 42, 1: -1, 42: -42}"), SV("{:#>30}"), input);
+
+  check(SV("{-42: 42, 1: -1, 42: -42}     "), SV("{:{}}"), input, 30);
+  check(SV("{-42: 42, 1: -1, 42: -42}*****"), SV("{:*<{}}"), input, 30);
+  check(SV("__{-42: 42, 1: -1, 42: -42}___"), SV("{:_^{}}"), input, 30);
+  check(SV("#####{-42: 42, 1: -1, 42: -42}"), SV("{:#>{}}"), input, 30);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42: 42, 1: -1, 42: -42___"), SV("{:_^28n}"), input);
+
+  // *** type ***
+  check(SV("__{-42: 42, 1: -1, 42: -42}___"), SV("{:_^30m}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{-42: 42   , 1: -1     , 42: -42   }"), SV("{::10}"), input);
+  check(SV("{-42: 42***, 1: -1*****, 42: -42***}"), SV("{::*<10}"), input);
+  check(SV("{_-42: 42__, __1: -1___, _42: -42__}"), SV("{::_^10}"), input);
+  check(SV("{###-42: 42, #####1: -1, ###42: -42}"), SV("{::#>10}"), input);
+
+  check(SV("{-42: 42   , 1: -1     , 42: -42   }"), SV("{::{}}"), input, 10);
+  check(SV("{-42: 42***, 1: -1*****, 42: -42***}"), SV("{::*<{}}"), input, 10);
+  check(SV("{_-42: 42__, __1: -1___, _42: -42__}"), SV("{::_^{}}"), input, 10);
+  check(SV("{###-42: 42, #####1: -1, ###42: -42}"), SV("{::#>{}}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###-42: 42, #####1: -1, ###42: -42}^^^"), SV("{:^^41:#>10}"), input);
+  check(SV("^^{###-42: 42, #####1: -1, ###42: -42}^^^"), SV("{:^^{}:#>10}"), input, 41);
+  check(SV("^^{###-42: 42, #####1: -1, ###42: -42}^^^"), SV("{:^^{}:#>{}}"), input, 41, 10);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>10}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 41);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception) {
+  test_int<CharT>(check, check_exception, std::map<int, int>{{1, -1}, {42, -42}, {-42, 42}});
+}
+
+//
+// Floating point
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception) {
+  std::map<double, double> input{{1.0, -1.0}, {-42, 42}};
+
+  check(SV("{-42: 42, 1: -1}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{-42: 42, 1: -1}     "), SV("{:21}"), input);
+  check(SV("{-42: 42, 1: -1}*****"), SV("{:*<21}"), input);
+  check(SV("__{-42: 42, 1: -1}___"), SV("{:_^21}"), input);
+  check(SV("#####{-42: 42, 1: -1}"), SV("{:#>21}"), input);
+
+  check(SV("{-42: 42, 1: -1}     "), SV("{:{}}"), input, 21);
+  check(SV("{-42: 42, 1: -1}*****"), SV("{:*<{}}"), input, 21);
+  check(SV("__{-42: 42, 1: -1}___"), SV("{:_^{}}"), input, 21);
+  check(SV("#####{-42: 42, 1: -1}"), SV("{:#>{}}"), input, 21);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42: 42, 1: -1___"), SV("{:_^19n}"), input);
+
+  // *** type ***
+  check(SV("__{-42: 42, 1: -1}___"), SV("{:_^21m}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{-42: 42   , 1: -1     }"), SV("{::10}"), input);
+  check(SV("{-42: 42***, 1: -1*****}"), SV("{::*<10}"), input);
+  check(SV("{_-42: 42__, __1: -1___}"), SV("{::_^10}"), input);
+  check(SV("{###-42: 42, #####1: -1}"), SV("{::#>10}"), input);
+
+  check(SV("{-42: 42   , 1: -1     }"), SV("{::{}}"), input, 10);
+  check(SV("{-42: 42***, 1: -1*****}"), SV("{::*<{}}"), input, 10);
+  check(SV("{_-42: 42__, __1: -1___}"), SV("{::_^{}}"), input, 10);
+  check(SV("{###-42: 42, #####1: -1}"), SV("{::#>{}}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###-42: 42, #####1: -1}^^^"), SV("{:^^29:#>10}"), input);
+  check(SV("^^{###-42: 42, #####1: -1}^^^"), SV("{:^^{}:#>10}"), input, 29);
+  check(SV("^^{###-42: 42, #####1: -1}^^^"), SV("{:^^{}:#>{}}"), input, 29, 10);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>10}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 29);
+}
+
+//
+// Pointer
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception) {
+  std::unordered_map<const void*, std::nullptr_t> input{{0, 0}};
+
+  check(SV("{0x0: 0x0}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{0x0: 0x0}     "), SV("{:15}"), input);
+  check(SV("{0x0: 0x0}*****"), SV("{:*<15}"), input);
+  check(SV("__{0x0: 0x0}___"), SV("{:_^15}"), input);
+  check(SV("#####{0x0: 0x0}"), SV("{:#>15}"), input);
+
+  check(SV("{0x0: 0x0}     "), SV("{:{}}"), input, 15);
+  check(SV("{0x0: 0x0}*****"), SV("{:*<{}}"), input, 15);
+  check(SV("__{0x0: 0x0}___"), SV("{:_^{}}"), input, 15);
+  check(SV("#####{0x0: 0x0}"), SV("{:#>{}}"), input, 15);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__0x0: 0x0___"), SV("{:_^13n}"), input);
+
+  // *** type ***
+  check(SV("__{0x0: 0x0}___"), SV("{:_^15m}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{0x0: 0x0     }"), SV("{::13}"), input);
+  check(SV("{0x0: 0x0*****}"), SV("{::*<13}"), input);
+  check(SV("{__0x0: 0x0___}"), SV("{::_^13}"), input);
+  check(SV("{#####0x0: 0x0}"), SV("{::#>13}"), input);
+
+  check(SV("{0x0: 0x0     }"), SV("{::{}}"), input, 13);
+  check(SV("{0x0: 0x0*****}"), SV("{::*<{}}"), input, 13);
+  check(SV("{__0x0: 0x0___}"), SV("{::_^{}}"), input, 13);
+  check(SV("{#####0x0: 0x0}"), SV("{::#>{}}"), input, 13);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###0x0: 0x0}^^^"), SV("{:^^18:#>11}"), input);
+  check(SV("^^{###0x0: 0x0}^^^"), SV("{:^^{}:#>11}"), input, 18);
+  check(SV("^^{###0x0: 0x0}^^^"), SV("{:^^{}:#>{}}"), input, 18, 11);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>11}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 18);
+}
+
+//
+// String
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception) {
+  std::map<std::basic_string<CharT>, std::basic_string<CharT>> input{
+      {STR("hello"), STR("HELLO")}, {STR("world"), STR("WORLD")}};
+
+  check(SV(R"({hello: HELLO, world: WORLD})"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"({hello: HELLO, world: WORLD}     )"), SV("{:33}"), input);
+  check(SV(R"({hello: HELLO, world: WORLD}*****)"), SV("{:*<33}"), input);
+  check(SV(R"(__{hello: HELLO, world: WORLD}___)"), SV("{:_^33}"), input);
+  check(SV(R"(#####{hello: HELLO, world: WORLD})"), SV("{:#>33}"), input);
+
+  check(SV(R"({hello: HELLO, world: WORLD}     )"), SV("{:{}}"), input, 33);
+  check(SV(R"({hello: HELLO, world: WORLD}*****)"), SV("{:*<{}}"), input, 33);
+  check(SV(R"(__{hello: HELLO, world: WORLD}___)"), SV("{:_^{}}"), input, 33);
+  check(SV(R"(#####{hello: HELLO, world: WORLD})"), SV("{:#>{}}"), input, 33);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV(R"(__hello: HELLO, world: WORLD___)"), SV("{:_^31n}"), input);
+
+  // *** type ***
+  check(SV(R"(__{hello: HELLO, world: WORLD}___)"), SV("{:_^33m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV(R"({"hello": "HELLO"     , "world": "WORLD"     })"), SV("{::21}"), input);
+  check(SV(R"({"hello": "HELLO"*****, "world": "WORLD"*****})"), SV("{::*<21}"), input);
+  check(SV(R"({__"hello": "HELLO"___, __"world": "WORLD"___})"), SV("{::_^21}"), input);
+  check(SV(R"({#####"hello": "HELLO", #####"world": "WORLD"})"), SV("{::#>21}"), input);
+
+  check(SV(R"({"hello": "HELLO"     , "world": "WORLD"     })"), SV("{::{}}"), input, 21);
+  check(SV(R"({"hello": "HELLO"*****, "world": "WORLD"*****})"), SV("{::*<{}}"), input, 21);
+  check(SV(R"({__"hello": "HELLO"___, __"world": "WORLD"___})"), SV("{::_^{}}"), input, 21);
+  check(SV(R"({#####"hello": "HELLO", #####"world": "WORLD"})"), SV("{::#>{}}"), input, 21);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+
+  check(SV(R"(^^{#####"hello": "HELLO", #####"world": "WORLD"}^^^)"), SV("{:^^51:#>21}"), input);
+  check(SV(R"(^^{#####"hello": "HELLO", #####"world": "WORLD"}^^^)"), SV("{:^^{}:#>21}"), input, 51);
+  check(SV(R"(^^{#####"hello": "HELLO", #####"world": "WORLD"}^^^)"), SV("{:^^{}:#>{}}"), input, 51, 21);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>21}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 51);
+}
+
+//
+// Handle
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_status(TestFunction check, ExceptionTest check_exception) {
+  std::unordered_multimap<status, status> input{{status::foobar, status::foo}, {status::foobar, status::bar}};
+
+  check(SV("{0xaa55: 0xaaaa, 0xaa55: 0x5555}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{0xaa55: 0xaaaa, 0xaa55: 0x5555}     "), SV("{:37}"), input);
+  check(SV("{0xaa55: 0xaaaa, 0xaa55: 0x5555}*****"), SV("{:*<37}"), input);
+  check(SV("__{0xaa55: 0xaaaa, 0xaa55: 0x5555}___"), SV("{:_^37}"), input);
+  check(SV("#####{0xaa55: 0xaaaa, 0xaa55: 0x5555}"), SV("{:#>37}"), input);
+
+  check(SV("{0xaa55: 0xaaaa, 0xaa55: 0x5555}     "), SV("{:{}}"), input, 37);
+  check(SV("{0xaa55: 0xaaaa, 0xaa55: 0x5555}*****"), SV("{:*<{}}"), input, 37);
+  check(SV("__{0xaa55: 0xaaaa, 0xaa55: 0x5555}___"), SV("{:_^{}}"), input, 37);
+  check(SV("#####{0xaa55: 0xaaaa, 0xaa55: 0x5555}"), SV("{:#>{}}"), input, 37);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__0xaa55: 0xaaaa, 0xaa55: 0x5555___"), SV("{:_^35n}"), input);
+
+  // *** type ***
+  check(SV("__{0xaa55: 0xaaaa, 0xaa55: 0x5555}___"), SV("{:_^37}"), input); // the m type does the same as the default.
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  // Underlying can't have a format-spec
+}
+
+//
+// Adaptor
+//
+
+class adaptor {
+  using adaptee = std::map<int, int>;
+
+public:
+  using key_type    = typename adaptee::key_type;
+  using mapped_type = typename adaptee::mapped_type;
+  using iterator    = typename adaptee::iterator;
+
+  iterator begin() { return data_.begin(); }
+  iterator end() { return data_.end(); }
+
+  explicit adaptor(std::map<int, int>&& data) : data_(std::move(data)) {}
+
+private:
+  adaptee data_;
+};
+
+static_assert(std::format_kind<adaptor> == std::range_format::map);
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_adaptor(TestFunction check, ExceptionTest check_exception) {
+  test_int<CharT>(check, check_exception, adaptor{std::map<int, int>{{1, -1}, {42, -42}, {-42, 42}}});
+}
+
+//
+// Driver
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_tests(TestFunction check, ExceptionTest check_exception) {
+  test_char<CharT>(check, check_exception);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  if (std::same_as<CharT, wchar_t>) // avoid testing twice
+    test_char_to_wchar(check, check_exception);
+#endif
+  test_bool<CharT>(check, check_exception);
+  test_int<CharT>(check, check_exception);
+  test_floating_point<CharT>(check, check_exception);
+  test_pointer<CharT>(check, check_exception);
+  test_string<CharT>(check, check_exception);
+
+  test_status<CharT>(check, check_exception);
+
+  test_adaptor<CharT>(check, check_exception);
+}
+
+#endif // TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FMTMAP_FORMAT_FUNCTIONS_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.vformat.pass.cpp
new file mode 100644
index 0000000..27b8805
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.functions.vformat.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::map, R, charT>
+//
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch (const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.pass.cpp
new file mode 100644
index 0000000..0001618
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/format.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::map, R, charT>
+
+// template<class FormatContext>
+//   typename FormatContext::iterator
+//     format(const T& ref, FormatContext& ctx) const;
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format.functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <map>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+void test_format(StringViewT expected, std::map<int, int> arg) {
+  using CharT      = typename StringViewT::value_type;
+  using String     = std::basic_string<CharT>;
+  using OutIt      = std::back_insert_iterator<String>;
+  using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+  std::formatter<std::map<int, int>, CharT> formatter;
+
+  String result;
+  OutIt out             = std::back_inserter(result);
+  FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class CharT>
+void test_fmt() {
+  test_format(SV("{1: 42}"), std::map<int, int>{{1, 42}});
+  test_format(SV("{0: 99}"), std::map<int, int>{{0, 99}});
+}
+
+void test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/parse.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/parse.pass.cpp
new file mode 100644
index 0000000..92763be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtmap/parse.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::map, R, charT>
+
+// template<class ParseContext>
+//   constexpr typename ParseContext::iterator
+//     parse(ParseContext& ctx);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format.functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <map>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+constexpr void test_parse(StringViewT fmt) {
+  using CharT    = typename StringViewT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<std::map<int, int>, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+}
+
+template <class CharT>
+constexpr void test_fmt() {
+  test_parse(SV(""));
+  test_parse(SV(":5"));
+
+  test_parse(SV("}"));
+  test_parse(SV(":5}"));
+}
+
+constexpr bool test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.format.pass.cpp
new file mode 100644
index 0000000..1361626
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.format.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::set, R, charT>
+//
+// template<class... Args>
+//   string format(format_string<Args...> fmt, Args&&... args);
+// template<class... Args>
+//   wstring format(wformat_string<Args...> fmt, Args&&... args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+};
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.tests.h b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.tests.h
new file mode 100644
index 0000000..a884ba7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.tests.h
@@ -0,0 +1,1482 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FMTSET_FORMAT_FUNCTIONS_TESTS_H
+#define TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FMTSET_FORMAT_FUNCTIONS_TESTS_H
+
+#include <algorithm>
+#include <format>
+#include <set>
+#include <tuple>
+#include <unordered_set>
+#include <utility>
+
+#include "format.functions.common.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_macros.h"
+
+//
+// Char
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_default(TestFunction check, ExceptionTest check_exception) {
+  std::set input{CharT('a'), CharT('c'), CharT('b')}; // input not sorted.
+
+  // Note when no range-underlying-spec is present the char is escaped,
+  check(SV("{'a', 'b', 'c'}"), SV("{}"), input);
+  // when one is present there is no escaping,
+  check(SV("{a, b, c}"), SV("{::}"), input);
+  // unless forced by the type specifier.
+  check(SV("{'a', 'b', 'c'}"), SV("{::?}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{'a', 'b', 'c'}     "), SV("{:20}"), input);
+  check(SV("{'a', 'b', 'c'}*****"), SV("{:*<20}"), input);
+  check(SV("__{'a', 'b', 'c'}___"), SV("{:_^20}"), input);
+  check(SV("#####{'a', 'b', 'c'}"), SV("{:#>20}"), input);
+
+  check(SV("{'a', 'b', 'c'}     "), SV("{:{}}"), input, 20);
+  check(SV("{'a', 'b', 'c'}*****"), SV("{:*<{}}"), input, 20);
+  check(SV("__{'a', 'b', 'c'}___"), SV("{:_^{}}"), input, 20);
+  check(SV("#####{'a', 'b', 'c'}"), SV("{:#>{}}"), input, 20);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__'a', 'b', 'c'___"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{a   , b   , c   }"), SV("{::4}"), input);
+  check(SV("{a***, b***, c***}"), SV("{::*<4}"), input);
+  check(SV("{_a__, _b__, _c__}"), SV("{::_^4}"), input);
+  check(SV("{:::a, :::b, :::c}"), SV("{:::>4}"), input);
+
+  check(SV("{a   , b   , c   }"), SV("{::{}}"), input, 4);
+  check(SV("{a***, b***, c***}"), SV("{::*<{}}"), input, 4);
+  check(SV("{_a__, _b__, _c__}"), SV("{::_^{}}"), input, 4);
+  check(SV("{:::a, :::b, :::c}"), SV("{:::>{}}"), input, 4);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("{97, 98, 99}"), SV("{::-d}"), input);
+  check(SV("{+97, +98, +99}"), SV("{::+d}"), input);
+  check(SV("{ 97,  98,  99}"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("{0x61, 0x62, 0x63}"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("{00141, 00142, 00143}"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("{a, b, c}"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{:a, :b, :c}^^^"), SV("{:^^17::>2}"), input);
+  check(SV("^^{:a, :b, :c}^^^"), SV("{:^^{}::>2}"), input, 17);
+  check(SV("^^{:a, :b, :c}^^^"), SV("{:^^{}::>{}}"), input, 17, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 17);
+}
+
+// A set can be written as a string, based on
+//   [tab:formatter.range.type]
+//   s  T shall be charT. ...
+// This does not seem very useful, but it is allowed.
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_string(TestFunction check, [[maybe_unused]] ExceptionTest check_exception) {
+  std::set input{CharT('a'), CharT('c'), CharT('b')}; // input not sorted.
+
+  check(SV("abc"), SV("{:s}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("abc   "), SV("{:6s}"), input);
+  check(SV("abc***"), SV("{:*<6s}"), input);
+  check(SV("_abc__"), SV("{:_^6s}"), input);
+  check(SV("###abc"), SV("{:#>6s}"), input);
+
+  check(SV("abc   "), SV("{:{}s}"), input, 6);
+  check(SV("abc***"), SV("{:*<{}s}"), input, 6);
+  check(SV("_abc__"), SV("{:_^{}s}"), input, 6);
+  check(SV("###abc"), SV("{:#>{}s}"), input, 6);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<s}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: s}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#s}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0s}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.s}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:Ls}"), input);
+
+  // *** n
+  check_exception("The n option and type s can't be used together", SV("{:ns}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("Type s and an underlying format specification can't be used together", SV("{:s:}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check_exception("Type s and an underlying format specification can't be used together", SV("{:5s:5}"), input);
+}
+
+// A set can be written as a debug_string, based on
+//   [tab:formatter.range.type]
+//   ?s T shall be charT. ...
+// This does not seem very useful, but it is allowed.
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_escaped_string(TestFunction check, [[maybe_unused]] ExceptionTest check_exception) {
+  std::set input{CharT('a'), CharT('c'), CharT('b')}; // input not sorted.
+
+  check(SV("\"abc\""), SV("{:?s}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"("abc"   )"), SV("{:8?s}"), input);
+  check(SV(R"("abc"***)"), SV("{:*<8?s}"), input);
+  check(SV(R"(_"abc"__)"), SV("{:_^8?s}"), input);
+  check(SV(R"(###"abc")"), SV("{:#>8?s}"), input);
+
+  check(SV(R"("abc"   )"), SV("{:{}?s}"), input, 8);
+  check(SV(R"("abc"***)"), SV("{:*<{}?s}"), input, 8);
+  check(SV(R"(_"abc"__)"), SV("{:_^{}?s}"), input, 8);
+  check(SV(R"(###"abc")"), SV("{:#>{}?s}"), input, 8);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<?s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<?s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<?s}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-?s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+?s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: ?s}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#?s}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0?s}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.?s}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L?s}"), input);
+
+  // *** n
+  check_exception("The n option and type ?s can't be used together", SV("{:n?s}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("Type ?s and an underlying format specification can't be used together", SV("{:?s:}"), input);
+
+  // ***** Both have a format-spec
+  check_exception("Type ?s and an underlying format specification can't be used together", SV("{:5?s:5}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char(TestFunction check, ExceptionTest check_exception) {
+  test_char_default<CharT>(check, check_exception);
+  test_char_string<CharT>(check, check_exception);
+  test_char_escaped_string<CharT>(check, check_exception);
+}
+
+//
+// char -> wchar_t
+//
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <class TestFunction, class ExceptionTest>
+void test_char_to_wchar(TestFunction check, ExceptionTest check_exception) {
+  std::set input{'a', 'c', 'b'}; // input not sorted.
+
+  using CharT = wchar_t;
+
+  // Note when no range-underlying-spec is present the char is escaped,
+  check(SV("{'a', 'b', 'c'}"), SV("{}"), input);
+  // when one is present there is no escaping,
+  check(SV("{a, b, c}"), SV("{::}"), input);
+  // unless forced by the type specifier.
+  check(SV("{'a', 'b', 'c'}"), SV("{::?}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{'a', 'b', 'c'}     "), SV("{:20}"), input);
+  check(SV("{'a', 'b', 'c'}*****"), SV("{:*<20}"), input);
+  check(SV("__{'a', 'b', 'c'}___"), SV("{:_^20}"), input);
+  check(SV("#####{'a', 'b', 'c'}"), SV("{:#>20}"), input);
+
+  check(SV("{'a', 'b', 'c'}     "), SV("{:{}}"), input, 20);
+  check(SV("{'a', 'b', 'c'}*****"), SV("{:*<{}}"), input, 20);
+  check(SV("__{'a', 'b', 'c'}___"), SV("{:_^{}}"), input, 20);
+  check(SV("#####{'a', 'b', 'c'}"), SV("{:#>{}}"), input, 20);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__'a', 'b', 'c'___"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{a   , b   , c   }"), SV("{::4}"), input);
+  check(SV("{a***, b***, c***}"), SV("{::*<4}"), input);
+  check(SV("{_a__, _b__, _c__}"), SV("{::_^4}"), input);
+  check(SV("{:::a, :::b, :::c}"), SV("{:::>4}"), input);
+
+  check(SV("{a   , b   , c   }"), SV("{::{}}"), input, 4);
+  check(SV("{a***, b***, c***}"), SV("{::*<{}}"), input, 4);
+  check(SV("{_a__, _b__, _c__}"), SV("{::_^{}}"), input, 4);
+  check(SV("{:::a, :::b, :::c}"), SV("{:::>{}}"), input, 4);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("{97, 98, 99}"), SV("{::-d}"), input);
+  check(SV("{+97, +98, +99}"), SV("{::+d}"), input);
+  check(SV("{ 97,  98,  99}"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("{0x61, 0x62, 0x63}"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("{00141, 00142, 00143}"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("{a, b, c}"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{:a, :b, :c}^^^"), SV("{:^^17::>2}"), input);
+  check(SV("^^{:a, :b, :c}^^^"), SV("{:^^{}::>2}"), input, 17);
+  check(SV("^^{:a, :b, :c}^^^"), SV("{:^^{}::>{}}"), input, 17, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 17);
+
+  // The types s and ?s may only be used when using range_formatter<T, charT>
+  // where the types T and charT are the same. This means this can't be used for
+  // range_formatter<wchar_t, char> even when formatter<wchar_t, char> has a
+  // debug-enabled specialization.
+
+  using CharT = wchar_t;
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+}
+#endif //  _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+//
+// Bool
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_bool(TestFunction check, ExceptionTest check_exception) {
+  std::set input{true, false};
+
+  check(SV("{false, true}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{false, true}     "), SV("{:18}"), input);
+  check(SV("{false, true}*****"), SV("{:*<18}"), input);
+  check(SV("__{false, true}___"), SV("{:_^18}"), input);
+  check(SV("#####{false, true}"), SV("{:#>18}"), input);
+
+  check(SV("{false, true}     "), SV("{:{}}"), input, 18);
+  check(SV("{false, true}*****"), SV("{:*<{}}"), input, 18);
+  check(SV("__{false, true}___"), SV("{:_^{}}"), input, 18);
+  check(SV("#####{false, true}"), SV("{:#>{}}"), input, 18);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__false, true___"), SV("{:_^16n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{false  , true   }"), SV("{::7}"), input);
+  check(SV("{false**, true***}"), SV("{::*<7}"), input);
+  check(SV("{_false_, _true__}"), SV("{::_^7}"), input);
+  check(SV("{::false, :::true}"), SV("{:::>7}"), input);
+
+  check(SV("{false  , true   }"), SV("{::{}}"), input, 7);
+  check(SV("{false**, true***}"), SV("{::*<{}}"), input, 7);
+  check(SV("{_false_, _true__}"), SV("{::_^{}}"), input, 7);
+  check(SV("{::false, :::true}"), SV("{:::>{}}"), input, 7);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("{0, 1}"), SV("{::-d}"), input);
+  check(SV("{+0, +1}"), SV("{::+d}"), input);
+  check(SV("{ 0,  1}"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("{0x0, 0x1}"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("{00000, 00001}"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("{false, true}"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{::false, :::true}^^^"), SV("{:^^23::>7}"), input);
+  check(SV("^^{::false, :::true}^^^"), SV("{:^^{}::>7}"), input, 23);
+  check(SV("^^{::false, :::true}^^^"), SV("{:^^{}::>{}}"), input, 23, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 23);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_bool_multiset(TestFunction check, ExceptionTest check_exception) {
+  std::multiset<bool, std::greater<bool>> input{true, false, true}; // unordered
+
+  check(SV("{true, true, false}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{true, true, false}     "), SV("{:24}"), input);
+  check(SV("{true, true, false}*****"), SV("{:*<24}"), input);
+  check(SV("__{true, true, false}___"), SV("{:_^24}"), input);
+  check(SV("#####{true, true, false}"), SV("{:#>24}"), input);
+
+  check(SV("{true, true, false}     "), SV("{:{}}"), input, 24);
+  check(SV("{true, true, false}*****"), SV("{:*<{}}"), input, 24);
+  check(SV("__{true, true, false}___"), SV("{:_^{}}"), input, 24);
+  check(SV("#####{true, true, false}"), SV("{:#>{}}"), input, 24);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__true, true, false___"), SV("{:_^22n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{true   , true   , false  }"), SV("{::7}"), input);
+  check(SV("{true***, true***, false**}"), SV("{::*<7}"), input);
+  check(SV("{_true__, _true__, _false_}"), SV("{::_^7}"), input);
+  check(SV("{:::true, :::true, ::false}"), SV("{:::>7}"), input);
+
+  check(SV("{true   , true   , false  }"), SV("{::{}}"), input, 7);
+  check(SV("{true***, true***, false**}"), SV("{::*<{}}"), input, 7);
+  check(SV("{_true__, _true__, _false_}"), SV("{::_^{}}"), input, 7);
+  check(SV("{:::true, :::true, ::false}"), SV("{:::>{}}"), input, 7);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("{1, 1, 0}"), SV("{::-d}"), input);
+  check(SV("{+1, +1, +0}"), SV("{::+d}"), input);
+  check(SV("{ 1,  1,  0}"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("{0x1, 0x1, 0x0}"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("{00001, 00001, 00000}"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("{true, true, false}"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{:::true, :::true, ::false}^^^"), SV("{:^^32::>7}"), input);
+  check(SV("^^{:::true, :::true, ::false}^^^"), SV("{:^^{}::>7}"), input, 32);
+  check(SV("^^{:::true, :::true, ::false}^^^"), SV("{:^^{}::>{}}"), input, 32, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 32);
+}
+
+//
+// Integral
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("{-42, 1, 2, 42}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{-42, 1, 2, 42}     "), SV("{:20}"), input);
+  check(SV("{-42, 1, 2, 42}*****"), SV("{:*<20}"), input);
+  check(SV("__{-42, 1, 2, 42}___"), SV("{:_^20}"), input);
+  check(SV("#####{-42, 1, 2, 42}"), SV("{:#>20}"), input);
+
+  check(SV("{-42, 1, 2, 42}     "), SV("{:{}}"), input, 20);
+  check(SV("{-42, 1, 2, 42}*****"), SV("{:*<{}}"), input, 20);
+  check(SV("__{-42, 1, 2, 42}___"), SV("{:_^{}}"), input, 20);
+  check(SV("#####{-42, 1, 2, 42}"), SV("{:#>{}}"), input, 20);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42, 1, 2, 42___"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{  -42,     1,     2,    42}"), SV("{::5}"), input);
+  check(SV("{-42**, 1****, 2****, 42***}"), SV("{::*<5}"), input);
+  check(SV("{_-42_, __1__, __2__, _42__}"), SV("{::_^5}"), input);
+  check(SV("{::-42, ::::1, ::::2, :::42}"), SV("{:::>5}"), input);
+
+  check(SV("{  -42,     1,     2,    42}"), SV("{::{}}"), input, 5);
+  check(SV("{-42**, 1****, 2****, 42***}"), SV("{::*<{}}"), input, 5);
+  check(SV("{_-42_, __1__, __2__, _42__}"), SV("{::_^{}}"), input, 5);
+  check(SV("{::-42, ::::1, ::::2, :::42}"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check(SV("{-42, 1, 2, 42}"), SV("{::-}"), input);
+  check(SV("{-42, +1, +2, +42}"), SV("{::+}"), input);
+  check(SV("{-42,  1,  2,  42}"), SV("{:: }"), input);
+
+  // *** alternate form ***
+  check(SV("{-0x2a, 0x1, 0x2, 0x2a}"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check(SV("{-0042, 00001, 00002, 00042}"), SV("{::05}"), input);
+  check(SV("{-002a, 00001, 00002, 0002a}"), SV("{::05x}"), input);
+  check(SV("{-0x2a, 0x001, 0x002, 0x02a}"), SV("{::#05x}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("{-42, 1, 2, 42}"), SV("{::L}"), input); // does nothing in this test, but is accepted.
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX"))
+    check_exception("The format-spec type has a type not supported for an integer argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{::-42, ::::1, ::::2, :::42}^^^"), SV("{:^^33::>5}"), input);
+  check(SV("^^{::-42, ::::1, ::::2, :::42}^^^"), SV("{:^^{}::>5}"), input, 33);
+  check(SV("^^{::-42, ::::1, ::::2, :::42}^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 33);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception) {
+  test_int<CharT>(check, check_exception, std::set{1, 42, 2, -42});      // unsorted
+  test_int<CharT>(check, check_exception, std::multiset{1, 42, 2, -42}); // unsorted
+}
+
+//
+// Floating point
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("{-42.5, 0, 1.25, 42.5}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{-42.5, 0, 1.25, 42.5}     "), SV("{:27}"), input);
+  check(SV("{-42.5, 0, 1.25, 42.5}*****"), SV("{:*<27}"), input);
+  check(SV("__{-42.5, 0, 1.25, 42.5}___"), SV("{:_^27}"), input);
+  check(SV("#####{-42.5, 0, 1.25, 42.5}"), SV("{:#>27}"), input);
+
+  check(SV("{-42.5, 0, 1.25, 42.5}     "), SV("{:{}}"), input, 27);
+  check(SV("{-42.5, 0, 1.25, 42.5}*****"), SV("{:*<{}}"), input, 27);
+  check(SV("__{-42.5, 0, 1.25, 42.5}___"), SV("{:_^{}}"), input, 27);
+  check(SV("#####{-42.5, 0, 1.25, 42.5}"), SV("{:#>{}}"), input, 27);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42.5, 0, 1.25, 42.5___"), SV("{:_^25n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{-42.5,     0,  1.25,  42.5}"), SV("{::5}"), input);
+  check(SV("{-42.5, 0****, 1.25*, 42.5*}"), SV("{::*<5}"), input);
+  check(SV("{-42.5, __0__, 1.25_, 42.5_}"), SV("{::_^5}"), input);
+  check(SV("{-42.5, ::::0, :1.25, :42.5}"), SV("{:::>5}"), input);
+
+  check(SV("{-42.5,     0,  1.25,  42.5}"), SV("{::{}}"), input, 5);
+  check(SV("{-42.5, 0****, 1.25*, 42.5*}"), SV("{::*<{}}"), input, 5);
+  check(SV("{-42.5, __0__, 1.25_, 42.5_}"), SV("{::_^{}}"), input, 5);
+  check(SV("{-42.5, ::::0, :1.25, :42.5}"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check(SV("{-42.5, 0, 1.25, 42.5}"), SV("{::-}"), input);
+  check(SV("{-42.5, +0, +1.25, +42.5}"), SV("{::+}"), input);
+  check(SV("{-42.5,  0,  1.25,  42.5}"), SV("{:: }"), input);
+
+  // *** alternate form ***
+  check(SV("{-42.5, 0., 1.25, 42.5}"), SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check(SV("{-42.5, 00000, 01.25, 042.5}"), SV("{::05}"), input);
+  check(SV("{-42.5, 0000., 01.25, 042.5}"), SV("{::#05}"), input);
+
+  // *** precision ***
+  check(SV("{-42, 0, 1.2, 42}"), SV("{::.2}"), input);
+  check(SV("{-42.500, 0.000, 1.250, 42.500}"), SV("{::.3f}"), input);
+
+  check(SV("{-42, 0, 1.2, 42}"), SV("{::.{}}"), input, 2);
+  check(SV("{-42.500, 0.000, 1.250, 42.500}"), SV("{::.{}f}"), input, 3);
+
+  check_exception("The format-spec precision field doesn't contain a value or arg-id", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("{-42.5, 0, 1.25, 42.5}"), SV("{::L}"), input); // does not require locales present
+#ifndef TEST_HAS_NO_LOCALIZATION
+// TODO FMT Enable with locale testing active
+#  if 0
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+  check(SV("{-42,5, 0, 1,25, 42,5}"), SV("{::L}"), input);
+
+  std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+  check(SV("{-42.5, 0, 1.25, 42.5}"), SV("{::L}"), input);
+
+  std::locale::global(std::locale::classic());
+#  endif
+#endif // TEST_HAS_NO_LOCALIZATION
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("aAeEfFgG"))
+    check_exception("The format-spec type has a type not supported for a floating-point argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{-42.5, ::::0, :1.25, :42.5}^^^"), SV("{:^^33::>5}"), input);
+  check(SV("^^{-42.5, ::::0, :1.25, :42.5}^^^"), SV("{:^^{}::>5}"), input, 33);
+  check(SV("^^{-42.5, ::::0, :1.25, :42.5}^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
+
+  check(SV("^^{::-42, ::::0, ::1.2, :::42}^^^"), SV("{:^^33::>5.2}"), input);
+  check(SV("^^{::-42, ::::0, ::1.2, :::42}^^^"), SV("{:^^{}::>5.2}"), input, 33);
+  check(SV("^^{::-42, ::::0, ::1.2, :::42}^^^"), SV("{:^^{}::>{}.2}"), input, 33, 5);
+  check(SV("^^{::-42, ::::0, ::1.2, :::42}^^^"), SV("{:^^{}::>{}.{}}"), input, 33, 5, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5.2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}.2}"), input, 33);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}.{}}"), input, 33, 5);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception) {
+  test_floating_point<CharT>(check, check_exception, std::set{-42.5f, 0.0f, 1.25f, 42.5f});
+  test_floating_point<CharT>(check, check_exception, std::multiset{-42.5, 0.0, 1.25, 42.5});
+  test_floating_point<CharT>(check, check_exception, std::set{-42.5l, 0.0l, 1.25l, 42.5l});
+}
+
+//
+// Pointer
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("{0x0}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{0x0}     "), SV("{:10}"), input);
+  check(SV("{0x0}*****"), SV("{:*<10}"), input);
+  check(SV("__{0x0}___"), SV("{:_^10}"), input);
+  check(SV("#####{0x0}"), SV("{:#>10}"), input);
+
+  check(SV("{0x0}     "), SV("{:{}}"), input, 10);
+  check(SV("{0x0}*****"), SV("{:*<{}}"), input, 10);
+  check(SV("__{0x0}___"), SV("{:_^{}}"), input, 10);
+  check(SV("#####{0x0}"), SV("{:#>{}}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("_0x0_"), SV("{:_^5n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{  0x0}"), SV("{::5}"), input);
+  check(SV("{0x0**}"), SV("{::*<5}"), input);
+  check(SV("{_0x0_}"), SV("{::_^5}"), input);
+  check(SV("{::0x0}"), SV("{:::>5}"), input);
+
+  check(SV("{  0x0}"), SV("{::{}}"), input, 5);
+  check(SV("{0x0**}"), SV("{::*<{}}"), input, 5);
+  check(SV("{_0x0_}"), SV("{::_^{}}"), input, 5);
+  check(SV("{::0x0}"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("p"))
+    check_exception("The format-spec type has a type not supported for a pointer argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{::0x0}^^^"), SV("{:^^12::>5}"), input);
+  check(SV("^^{::0x0}^^^"), SV("{:^^{}::>5}"), input, 12);
+  check(SV("^^{::0x0}^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
+
+  check(SV("^^{::0x0}^^^"), SV("{:^^12::>5}"), input);
+  check(SV("^^{::0x0}^^^"), SV("{:^^{}::>5}"), input, 12);
+  check(SV("^^{::0x0}^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 12);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception) {
+  // Note nullptr_t can only be equality compared so not used in a set.
+  test_pointer<CharT>(check, check_exception, std::unordered_set{static_cast<const void*>(0)});
+  test_pointer<CharT>(check, check_exception, std::unordered_multiset{static_cast<void*>(0)});
+}
+
+//
+// String
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV(R"({"Hello", "world"})"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"({"Hello", "world"}     )"), SV("{:23}"), input);
+  check(SV(R"({"Hello", "world"}*****)"), SV("{:*<23}"), input);
+  check(SV(R"(__{"Hello", "world"}___)"), SV("{:_^23}"), input);
+  check(SV(R"(#####{"Hello", "world"})"), SV("{:#>23}"), input);
+
+  check(SV(R"({"Hello", "world"}     )"), SV("{:{}}"), input, 23);
+  check(SV(R"({"Hello", "world"}*****)"), SV("{:*<{}}"), input, 23);
+  check(SV(R"(__{"Hello", "world"}___)"), SV("{:_^{}}"), input, 23);
+  check(SV(R"(#####{"Hello", "world"})"), SV("{:#>{}}"), input, 23);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV(R"(_"Hello", "world"_)"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV(R"({Hello   , world   })"), SV("{::8}"), input);
+  check(SV(R"({Hello***, world***})"), SV("{::*<8}"), input);
+  check(SV(R"({_Hello__, _world__})"), SV("{::_^8}"), input);
+  check(SV(R"({:::Hello, :::world})"), SV("{:::>8}"), input);
+
+  check(SV(R"({Hello   , world   })"), SV("{::{}}"), input, 8);
+  check(SV(R"({Hello***, world***})"), SV("{::*<{}}"), input, 8);
+  check(SV(R"({_Hello__, _world__})"), SV("{::_^{}}"), input, 8);
+  check(SV(R"({:::Hello, :::world})"), SV("{:::>{}}"), input, 8);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check(SV(R"({Hel, wor})"), SV("{::.3}"), input);
+
+  check(SV(R"({Hel, wor})"), SV("{::.{}}"), input, 3);
+
+  check_exception("The format-spec precision field doesn't contain a value or arg-id", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s?"))
+    check_exception("The format-spec type has a type not supported for a string argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV(R"(^^{:::Hello, :::world}^^^)"), SV("{:^^25::>8}"), input);
+  check(SV(R"(^^{:::Hello, :::world}^^^)"), SV("{:^^{}::>8}"), input, 25);
+  check(SV(R"(^^{:::Hello, :::world}^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
+
+  check(SV(R"(^^{:::Hello, :::world}^^^)"), SV("{:^^25::>8}"), input);
+  check(SV(R"(^^{:::Hello, :::world}^^^)"), SV("{:^^{}::>8}"), input, 25);
+  check(SV(R"(^^{:::Hello, :::world}^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>8}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 25);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception) {
+  test_string<CharT>(check, check_exception, std::set{STR("Hello"), STR("world")});
+  test_string<CharT>(check, check_exception, std::set{SV("Hello"), SV("world")});
+}
+
+//
+// Handle
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_status(TestFunction check, ExceptionTest check_exception) {
+  std::set input{status::foo, status::bar, status::foobar}; // unordered input
+
+  check(SV("{0x5555, 0xaa55, 0xaaaa}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{0x5555, 0xaa55, 0xaaaa}     "), SV("{:29}"), input);
+  check(SV("{0x5555, 0xaa55, 0xaaaa}*****"), SV("{:*<29}"), input);
+  check(SV("__{0x5555, 0xaa55, 0xaaaa}___"), SV("{:_^29}"), input);
+  check(SV("#####{0x5555, 0xaa55, 0xaaaa}"), SV("{:#>29}"), input);
+
+  check(SV("{0x5555, 0xaa55, 0xaaaa}     "), SV("{:{}}"), input, 29);
+  check(SV("{0x5555, 0xaa55, 0xaaaa}*****"), SV("{:*<{}}"), input, 29);
+  check(SV("__{0x5555, 0xaa55, 0xaaaa}___"), SV("{:_^{}}"), input, 29);
+  check(SV("#####{0x5555, 0xaa55, 0xaaaa}"), SV("{:#>{}}"), input, 29);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__0x5555, 0xaa55, 0xaaaa___"), SV("{:_^27n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("The format-spec type has a type not supported for a status argument", SV("{::*<7}"), input);
+
+  check(SV("{0x5555, 0xaa55, 0xaaaa}"), SV("{::x}"), input);
+  check(SV("{0X5555, 0XAA55, 0XAAAA}"), SV("{::X}"), input);
+  check(SV("{bar, foobar, foo}"), SV("{::s}"), input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{0X5555, 0XAA55, 0XAAAA}^^^"), SV("{:^^29:X}"), input);
+  check(SV("^^{0X5555, 0XAA55, 0XAAAA}^^^"), SV("{:^^{}:X}"), input, 29);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:X}"), input);
+}
+
+//
+// Pair
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pair_tuple(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("{(1, a), (42, *)}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{(1, a), (42, *)}     "), SV("{:22}"), input);
+  check(SV("{(1, a), (42, *)}*****"), SV("{:*<22}"), input);
+  check(SV("__{(1, a), (42, *)}___"), SV("{:_^22}"), input);
+  check(SV("#####{(1, a), (42, *)}"), SV("{:#>22}"), input);
+
+  check(SV("{(1, a), (42, *)}     "), SV("{:{}}"), input, 22);
+  check(SV("{(1, a), (42, *)}*****"), SV("{:*<{}}"), input, 22);
+  check(SV("__{(1, a), (42, *)}___"), SV("{:_^{}}"), input, 22);
+  check(SV("#####{(1, a), (42, *)}"), SV("{:#>{}}"), input, 22);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__(1, a), (42, *)___"), SV("{:_^20n}"), input);
+  check(SV("__(1, a), (42, *)___"), SV("{:_^20nm}"), input); // m should have no effect
+
+  // *** type ***
+  check(SV("__{(1, a), (42, *)}___"), SV("{:_^22m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{(1, 'a')   , (42, '*')  }"), SV("{::11}"), input);
+  check(SV("{(1, 'a')***, (42, '*')**}"), SV("{::*<11}"), input);
+  check(SV("{_(1, 'a')__, _(42, '*')_}"), SV("{::_^11}"), input);
+  check(SV("{###(1, 'a'), ##(42, '*')}"), SV("{::#>11}"), input);
+
+  check(SV("{(1, 'a')   , (42, '*')  }"), SV("{::{}}"), input, 11);
+  check(SV("{(1, 'a')***, (42, '*')**}"), SV("{::*<{}}"), input, 11);
+  check(SV("{_(1, 'a')__, _(42, '*')_}"), SV("{::_^{}}"), input, 11);
+  check(SV("{###(1, 'a'), ##(42, '*')}"), SV("{::#>{}}"), input, 11);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("{1: 'a', 42: '*'}"), SV("{::m}"), input);
+  check(SV("{1, 'a', 42, '*'}"), SV("{::n}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###(1, 'a'), ##(42, '*')}^^^"), SV("{:^^31:#>11}"), input);
+  check(SV("^^{###(1, 'a'), ##(42, '*')}^^^"), SV("{:^^31:#>11}"), input);
+  check(SV("^^{###(1, 'a'), ##(42, '*')}^^^"), SV("{:^^{}:#>11}"), input, 31);
+  check(SV("^^{###(1, 'a'), ##(42, '*')}^^^"), SV("{:^^{}:#>{}}"), input, 31, 11);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 31);
+
+  check(SV("1: 'a', 42: '*'"), SV("{:n:m}"), input);
+  check(SV("1, 'a', 42, '*'"), SV("{:n:n}"), input);
+  check(SV("{1: 'a', 42: '*'}"), SV("{:m:m}"), input);
+  check(SV("{1, 'a', 42, '*'}"), SV("{:m:n}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pair_tuple(TestFunction check, ExceptionTest check_exception) {
+  test_pair_tuple<CharT>(
+      check, check_exception, std::set{std::make_pair(1, CharT('a')), std::make_pair(42, CharT('*'))});
+  test_pair_tuple<CharT>(
+      check, check_exception, std::set{std::make_tuple(1, CharT('a')), std::make_tuple(42, CharT('*'))});
+}
+
+//
+// Tuple 1
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int(TestFunction check, ExceptionTest check_exception) {
+  std::set input{std::make_tuple(42), std::make_tuple(99)};
+
+  check(SV("{(42), (99)}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{(42), (99)}     "), SV("{:17}"), input);
+  check(SV("{(42), (99)}*****"), SV("{:*<17}"), input);
+  check(SV("__{(42), (99)}___"), SV("{:_^17}"), input);
+  check(SV("#####{(42), (99)}"), SV("{:#>17}"), input);
+
+  check(SV("{(42), (99)}     "), SV("{:{}}"), input, 17);
+  check(SV("{(42), (99)}*****"), SV("{:*<{}}"), input, 17);
+  check(SV("__{(42), (99)}___"), SV("{:_^{}}"), input, 17);
+  check(SV("#####{(42), (99)}"), SV("{:#>{}}"), input, 17);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__(42), (99)___"), SV("{:_^15n}"), input);
+
+  // *** type ***
+  check(SV("__{(42), (99)}___"), SV("{:_^17m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{(42)   , (99)   }"), SV("{::7}"), input);
+  check(SV("{(42)***, (99)***}"), SV("{::*<7}"), input);
+  check(SV("{_(42)__, _(99)__}"), SV("{::_^7}"), input);
+  check(SV("{###(42), ###(99)}"), SV("{::#>7}"), input);
+
+  check(SV("{(42)   , (99)   }"), SV("{::{}}"), input, 7);
+  check(SV("{(42)***, (99)***}"), SV("{::*<{}}"), input, 7);
+  check(SV("{_(42)__, _(99)__}"), SV("{::_^{}}"), input, 7);
+  check(SV("{###(42), ###(99)}"), SV("{::#>{}}"), input, 7);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("{42, 99}"), SV("{::n}"), input);
+  check_exception("The format specifier m requires a pair or a two-element tuple", SV("{::m}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{###(42), ###(99)}^^^"), SV("{:^^23:#>7}"), input);
+  check(SV("^^{###(42), ###(99)}^^^"), SV("{:^^23:#>7}"), input);
+  check(SV("^^{###(42), ###(99)}^^^"), SV("{:^^{}:#>7}"), input, 23);
+  check(SV("^^{###(42), ###(99)}^^^"), SV("{:^^{}:#>{}}"), input, 23, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 23);
+}
+
+//
+// Tuple 3
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int_int_int(TestFunction check, ExceptionTest check_exception) {
+  std::set input{std::make_tuple(42, 99, 0), std::make_tuple(1, 10, 100)}; // unordered
+
+  check(SV("{(1, 10, 100), (42, 99, 0)}"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("{(1, 10, 100), (42, 99, 0)}     "), SV("{:32}"), input);
+  check(SV("{(1, 10, 100), (42, 99, 0)}*****"), SV("{:*<32}"), input);
+  check(SV("__{(1, 10, 100), (42, 99, 0)}___"), SV("{:_^32}"), input);
+  check(SV("#####{(1, 10, 100), (42, 99, 0)}"), SV("{:#>32}"), input);
+
+  check(SV("{(1, 10, 100), (42, 99, 0)}     "), SV("{:{}}"), input, 32);
+  check(SV("{(1, 10, 100), (42, 99, 0)}*****"), SV("{:*<{}}"), input, 32);
+  check(SV("__{(1, 10, 100), (42, 99, 0)}___"), SV("{:_^{}}"), input, 32);
+  check(SV("#####{(1, 10, 100), (42, 99, 0)}"), SV("{:#>{}}"), input, 32);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__(1, 10, 100), (42, 99, 0)___"), SV("{:_^30n}"), input);
+
+  // *** type ***
+  check(SV("__{(1, 10, 100), (42, 99, 0)}___"), SV("{:_^32m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("{(1, 10, 100)  , (42, 99, 0)   }"), SV("{::14}"), input);
+  check(SV("{(1, 10, 100)**, (42, 99, 0)***}"), SV("{::*<14}"), input);
+  check(SV("{_(1, 10, 100)_, _(42, 99, 0)__}"), SV("{::_^14}"), input);
+  check(SV("{##(1, 10, 100), ###(42, 99, 0)}"), SV("{::#>14}"), input);
+
+  check(SV("{(1, 10, 100)  , (42, 99, 0)   }"), SV("{::{}}"), input, 14);
+  check(SV("{(1, 10, 100)**, (42, 99, 0)***}"), SV("{::*<{}}"), input, 14);
+  check(SV("{_(1, 10, 100)_, _(42, 99, 0)__}"), SV("{::_^{}}"), input, 14);
+  check(SV("{##(1, 10, 100), ###(42, 99, 0)}"), SV("{::#>{}}"), input, 14);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("{1, 10, 100, 42, 99, 0}"), SV("{::n}"), input);
+  check_exception("The format specifier m requires a pair or a two-element tuple", SV("{::m}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::?s}"), input);
+
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^{##(1, 10, 100), ###(42, 99, 0)}^^^"), SV("{:^^37:#>14}"), input);
+  check(SV("^^{##(1, 10, 100), ###(42, 99, 0)}^^^"), SV("{:^^37:#>14}"), input);
+  check(SV("^^{##(1, 10, 100), ###(42, 99, 0)}^^^"), SV("{:^^{}:#>14}"), input, 37);
+  check(SV("^^{##(1, 10, 100), ###(42, 99, 0)}^^^"), SV("{:^^{}:#>{}}"), input, 37, 14);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 37);
+}
+
+//
+// Adaptor
+//
+
+class adaptor {
+  using adaptee = std::set<int>;
+
+public:
+  using key_type = typename adaptee::key_type;
+  using iterator = typename adaptee::iterator;
+
+  iterator begin() { return data_.begin(); }
+  iterator end() { return data_.end(); }
+
+  explicit adaptor(std::set<int>&& data) : data_(std::move(data)) {}
+
+private:
+  adaptee data_;
+};
+
+static_assert(std::format_kind<adaptor> == std::range_format::set);
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_adaptor(TestFunction check, ExceptionTest check_exception) {
+  test_int<CharT>(check, check_exception, adaptor{std::set{1, 42, 2, -42}});
+}
+
+//
+// Driver
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_tests(TestFunction check, ExceptionTest check_exception) {
+  test_char<CharT>(check, check_exception);
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  if (std::same_as<CharT, wchar_t>) // avoid testing twice
+    test_char_to_wchar(check, check_exception);
+#endif
+  test_bool<CharT>(check, check_exception);
+  test_bool_multiset<CharT>(check, check_exception);
+  test_int<CharT>(check, check_exception);
+  test_floating_point<CharT>(check, check_exception);
+  test_pointer<CharT>(check, check_exception);
+  test_string<CharT>(check, check_exception);
+
+  test_status<CharT>(check, check_exception); // Has its own handler with its own parser
+
+  test_pair_tuple<CharT>(check, check_exception);
+  test_tuple_int<CharT>(check, check_exception);
+  test_tuple_int_int_int<CharT>(check, check_exception);
+
+  test_adaptor<CharT>(check, check_exception);
+}
+
+#endif // TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FMTSET_FORMAT_FUNCTIONS_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.vformat.pass.cpp
new file mode 100644
index 0000000..4a8ee4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.functions.vformat.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::set, R, charT>
+//
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch (const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.pass.cpp
new file mode 100644
index 0000000..651ae86
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/format.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::set, R, charT>
+
+// template<class FormatContext>
+//   typename FormatContext::iterator
+//     format(const T& ref, FormatContext& ctx) const;
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format.functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <set>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+void test_format(StringViewT expected, std::set<int> arg) {
+  using CharT      = typename StringViewT::value_type;
+  using String     = std::basic_string<CharT>;
+  using OutIt      = std::back_insert_iterator<String>;
+  using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+  std::formatter<std::set<int>, CharT> formatter;
+
+  String result;
+  OutIt out             = std::back_inserter(result);
+  FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class CharT>
+void test_fmt() {
+  test_format(SV("{42}"), std::set<int>{42});
+}
+
+void test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/parse.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/parse.pass.cpp
new file mode 100644
index 0000000..753a975
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.fmtset/parse.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<ranges::input_range R, class charT>
+//   struct range-default-formatter<range_format::set, R, charT>
+
+// template<class ParseContext>
+//   constexpr typename ParseContext::iterator
+//     parse(ParseContext& ctx);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format.functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <set>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+constexpr void test_parse(StringViewT fmt) {
+  using CharT    = typename StringViewT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<std::set<int>, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+}
+
+template <class CharT>
+constexpr void test_fmt() {
+  test_parse(SV(""));
+  test_parse(SV(":5"));
+
+  test_parse(SV("}"));
+  test_parse(SV(":5}"));
+}
+
+constexpr bool test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.format.pass.cpp
new file mode 100644
index 0000000..78e04fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.format.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+//  template<class T, class charT = char>
+//    requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+//  class range_formatter;
+
+// template<class... Args>
+//   string format(format_string<Args...> fmt, Args&&... args);
+// template<class... Args>
+//   wstring format(wformat_string<Args...> fmt, Args&&... args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+};
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.tests.h b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.tests.h
new file mode 100644
index 0000000..a465916
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.tests.h
@@ -0,0 +1,1353 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FORMATTER_FORMAT_FUNCTIONS_TESTS_H
+#define TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FORMATTER_FORMAT_FUNCTIONS_TESTS_H
+
+#include <algorithm>
+#include <array>
+#include <charconv>
+#include <concepts>
+#include <deque>
+#include <format>
+#include <list>
+#include <ranges>
+#include <span>
+#include <vector>
+
+#include "format.functions.common.h"
+#include "make_string.h"
+#include "platform_support.h" // locale name macros
+#include "test_iterators.h"
+#include "test_macros.h"
+
+//
+// Char
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_default(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  // Note when no range-underlying-spec is present the char is escaped,
+  check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{}"), input);
+
+  // when one is present there is no escaping,
+  check(SV("[H, e, l, l, o]"), SV("{::}"), input);
+  // unless forced by the type specifier.
+  check(SV("['H', 'e', 'l', 'l', 'o']"), SV("{::?}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("['H', 'e', 'l', 'l', 'o']     "), SV("{:30}"), input);
+  check(SV("['H', 'e', 'l', 'l', 'o']*****"), SV("{:*<30}"), input);
+  check(SV("__['H', 'e', 'l', 'l', 'o']___"), SV("{:_^30}"), input);
+  check(SV("#####['H', 'e', 'l', 'l', 'o']"), SV("{:#>30}"), input);
+
+  check(SV("['H', 'e', 'l', 'l', 'o']     "), SV("{:{}}"), input, 30);
+  check(SV("['H', 'e', 'l', 'l', 'o']*****"), SV("{:*<{}}"), input, 30);
+  check(SV("__['H', 'e', 'l', 'l', 'o']___"), SV("{:_^{}}"), input, 30);
+  check(SV("#####['H', 'e', 'l', 'l', 'o']"), SV("{:#>{}}"), input, 30);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__'H', 'e', 'l', 'l', 'o'___"), SV("{:_^28n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[H   , e   , l   , l   , o   ]"), SV("{::4}"), input);
+  check(SV("[H***, e***, l***, l***, o***]"), SV("{::*<4}"), input);
+  check(SV("[_H__, _e__, _l__, _l__, _o__]"), SV("{::_^4}"), input);
+  check(SV("[:::H, :::e, :::l, :::l, :::o]"), SV("{:::>4}"), input);
+
+  check(SV("[H   , e   , l   , l   , o   ]"), SV("{::{}}"), input, 4);
+  check(SV("[H***, e***, l***, l***, o***]"), SV("{::*<{}}"), input, 4);
+  check(SV("[_H__, _e__, _l__, _l__, _o__]"), SV("{::_^{}}"), input, 4);
+  check(SV("[:::H, :::e, :::l, :::l, :::o]"), SV("{:::>{}}"), input, 4);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("[72, 101, 108, 108, 111]"), SV("{::-d}"), input);
+  check(SV("[+72, +101, +108, +108, +111]"), SV("{::+d}"), input);
+  check(SV("[ 72,  101,  108,  108,  111]"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("[0x48, 0x65, 0x6c, 0x6c, 0x6f]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("[00110, 00145, 00154, 00154, 00157]"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[H, e, l, l, o]"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^25::>2}"), input);
+  check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^{}::>2}"), input, 25);
+  check(SV("^^[:H, :e, :l, :l, :o]^^^"), SV("{:^^{}::>{}}"), input, 25, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 25);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("Hello"), SV("{:s}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("Hello   "), SV("{:8s}"), input);
+  check(SV("Hello***"), SV("{:*<8s}"), input);
+  check(SV("_Hello__"), SV("{:_^8s}"), input);
+  check(SV("###Hello"), SV("{:#>8s}"), input);
+
+  check(SV("Hello   "), SV("{:{}s}"), input, 8);
+  check(SV("Hello***"), SV("{:*<{}s}"), input, 8);
+  check(SV("_Hello__"), SV("{:_^{}s}"), input, 8);
+  check(SV("###Hello"), SV("{:#>{}s}"), input, 8);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<s}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: s}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#s}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0s}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.s}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:Ls}"), input);
+
+  // *** n
+  check_exception("The n option and type s can't be used together", SV("{:ns}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("Type s and an underlying format specification can't be used together", SV("{:s:}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX?"))
+    check_exception("The format-spec type has a type not supported for a char argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check_exception("Type s and an underlying format specification can't be used together", SV("{:5s:5}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char_escaped_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV(R"("\"Hello'")"), SV("{:?s}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"("\"Hello'"   )"), SV("{:13?s}"), input);
+  check(SV(R"("\"Hello'"***)"), SV("{:*<13?s}"), input);
+  check(SV(R"(_"\"Hello'"__)"), SV("{:_^13?s}"), input);
+  check(SV(R"(###"\"Hello'")"), SV("{:#>13?s}"), input);
+
+  check(SV(R"("\"Hello'"   )"), SV("{:{}?s}"), input, 13);
+  check(SV(R"("\"Hello'"***)"), SV("{:*<{}?s}"), input, 13);
+  check(SV(R"(_"\"Hello'"__)"), SV("{:_^{}?s}"), input, 13);
+  check(SV(R"(###"\"Hello'")"), SV("{:#>{}?s}"), input, 13);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<?s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<?s}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<?s}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-?s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+?s}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: ?s}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#?s}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0?s}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.?s}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L?s}"), input);
+
+  // *** n
+  check_exception("The n option and type ?s can't be used together", SV("{:n?s}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("Type ?s and an underlying format specification can't be used together", SV("{:?s:}"), input);
+
+  // ***** Both have a format-spec
+  check_exception("Type ?s and an underlying format specification can't be used together", SV("{:5?s:5}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_char(TestFunction check, ExceptionTest check_exception) {
+  test_char_default<CharT>(
+      check, check_exception, std::array{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')});
+
+  // This tests two different implementations in libc++. A basic_string_view
+  // formatter if the range is contiguous, a basic_string otherwise.
+  test_char_escaped_string<CharT>(
+      check,
+      check_exception,
+      std::array{CharT('"'), CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o'), CharT('\'')});
+  test_char_escaped_string<CharT>(
+      check,
+      check_exception,
+      std::list{CharT('"'), CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o'), CharT('\'')});
+
+  // This tests two different implementations in libc++. A basic_string_view
+  // formatter if the range is contiguous, a basic_string otherwise.
+  test_char_string<CharT>(
+      check, check_exception, std::array{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')});
+  test_char_string<CharT>(
+      check, check_exception, std::list{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')});
+}
+
+//
+// char -> wchar_t
+//
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+template <class TestFunction, class ExceptionTest>
+void test_char_to_wchar(TestFunction check, ExceptionTest check_exception) {
+  test_char_default<wchar_t>(check, check_exception, std::array{'H', 'e', 'l', 'l', 'o'});
+
+  // The types s and ?s may only be used when using range_formatter<T, charT>
+  // where the types T and charT are the same. This means this can't be used for
+  // range_formatter<wchar_t, char> even when formatter<wchar_t, char> has a
+  // debug-enabled specialization.
+
+  using CharT = wchar_t;
+  check_exception("The range-format-spec type s requires formatting a character type",
+                  SV("{:s}"),
+                  std::array{'H', 'e', 'l', 'l', 'o'});
+  check_exception("The range-format-spec type ?s requires formatting a character type",
+                  SV("{:?s}"),
+                  std::array{'H', 'e', 'l', 'l', 'o'});
+}
+#endif
+
+//
+// Bool
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_bool(TestFunction check, ExceptionTest check_exception) {
+  std::array input{true, true, false};
+
+  check(SV("[true, true, false]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[true, true, false]     "), SV("{:24}"), input);
+  check(SV("[true, true, false]*****"), SV("{:*<24}"), input);
+  check(SV("__[true, true, false]___"), SV("{:_^24}"), input);
+  check(SV("#####[true, true, false]"), SV("{:#>24}"), input);
+
+  check(SV("[true, true, false]     "), SV("{:{}}"), input, 24);
+  check(SV("[true, true, false]*****"), SV("{:*<{}}"), input, 24);
+  check(SV("__[true, true, false]___"), SV("{:_^{}}"), input, 24);
+  check(SV("#####[true, true, false]"), SV("{:#>{}}"), input, 24);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__true, true, false___"), SV("{:_^22n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[true   , true   , false  ]"), SV("{::7}"), input);
+  check(SV("[true***, true***, false**]"), SV("{::*<7}"), input);
+  check(SV("[_true__, _true__, _false_]"), SV("{::_^7}"), input);
+  check(SV("[:::true, :::true, ::false]"), SV("{:::>7}"), input);
+
+  check(SV("[true   , true   , false  ]"), SV("{::{}}"), input, 7);
+  check(SV("[true***, true***, false**]"), SV("{::*<{}}"), input, 7);
+  check(SV("[_true__, _true__, _false_]"), SV("{::_^{}}"), input, 7);
+  check(SV("[:::true, :::true, ::false]"), SV("{:::>{}}"), input, 7);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::-}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{::+}"), input);
+  check_exception("A sign field isn't allowed in this format-spec", SV("{:: }"), input);
+
+  check(SV("[1, 1, 0]"), SV("{::-d}"), input);
+  check(SV("[+1, +1, +0]"), SV("{::+d}"), input);
+  check(SV("[ 1,  1,  0]"), SV("{:: d}"), input);
+
+  // *** alternate form ***
+  check_exception("An alternate form field isn't allowed in this format-spec", SV("{::#}"), input);
+
+  check(SV("[0x1, 0x1, 0x0]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check_exception("A zero-padding field isn't allowed in this format-spec", SV("{::05}"), input);
+
+  check(SV("[00001, 00001, 00000]"), SV("{::05o}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[true, true, false]"), SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBdosxX"))
+    check_exception("The format-spec type has a type not supported for a bool argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^32::>7}"), input);
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>7}"), input, 32);
+  check(SV("^^[:::true, :::true, ::false]^^^"), SV("{:^^{}::>{}}"), input, 32, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 32);
+}
+
+//
+// Integral
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[1, 2, 42, -42]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[1, 2, 42, -42]     "), SV("{:20}"), input);
+  check(SV("[1, 2, 42, -42]*****"), SV("{:*<20}"), input);
+  check(SV("__[1, 2, 42, -42]___"), SV("{:_^20}"), input);
+  check(SV("#####[1, 2, 42, -42]"), SV("{:#>20}"), input);
+
+  check(SV("[1, 2, 42, -42]     "), SV("{:{}}"), input, 20);
+  check(SV("[1, 2, 42, -42]*****"), SV("{:*<{}}"), input, 20);
+  check(SV("__[1, 2, 42, -42]___"), SV("{:_^{}}"), input, 20);
+  check(SV("#####[1, 2, 42, -42]"), SV("{:#>{}}"), input, 20);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__1, 2, 42, -42___"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[    1,     2,    42,   -42]"), SV("{::5}"), input);
+  check(SV("[1****, 2****, 42***, -42**]"), SV("{::*<5}"), input);
+  check(SV("[__1__, __2__, _42__, _-42_]"), SV("{::_^5}"), input);
+  check(SV("[::::1, ::::2, :::42, ::-42]"), SV("{:::>5}"), input);
+
+  check(SV("[    1,     2,    42,   -42]"), SV("{::{}}"), input, 5);
+  check(SV("[1****, 2****, 42***, -42**]"), SV("{::*<{}}"), input, 5);
+  check(SV("[__1__, __2__, _42__, _-42_]"), SV("{::_^{}}"), input, 5);
+  check(SV("[::::1, ::::2, :::42, ::-42]"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check(SV("[1, 2, 42, -42]"), SV("{::-}"), input);
+  check(SV("[+1, +2, +42, -42]"), SV("{::+}"), input);
+  check(SV("[ 1,  2,  42, -42]"), SV("{:: }"), input);
+
+  // *** alternate form ***
+  check(SV("[0x1, 0x2, 0x2a, -0x2a]"), SV("{::#x}"), input);
+
+  // *** zero-padding ***
+  check(SV("[00001, 00002, 00042, -0042]"), SV("{::05}"), input);
+  check(SV("[00001, 00002, 0002a, -002a]"), SV("{::05x}"), input);
+  check(SV("[0x001, 0x002, 0x02a, -0x2a]"), SV("{::#05x}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[1, 2, 42, -42]"), SV("{::L}"), input); // does nothing in this test, but is accepted.
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("bBcdoxX"))
+    check_exception("The format-spec type has a type not supported for an integer argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[::::1, ::::2, :::42, ::-42]^^^"), SV("{:^^33::>5}"), input);
+  check(SV("^^[::::1, ::::2, :::42, ::-42]^^^"), SV("{:^^{}::>5}"), input, 33);
+  check(SV("^^[::::1, ::::2, :::42, ::-42]^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 33);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_int(TestFunction check, ExceptionTest check_exception) {
+  test_int<CharT>(check, check_exception, std::array{1, 2, 42, -42});
+  test_int<CharT>(check, check_exception, std::list{1, 2, 42, -42});
+  test_int<CharT>(check, check_exception, std::vector{1, 2, 42, -42});
+  std::array input{1, 2, 42, -42};
+  test_int<CharT>(check, check_exception, std::span{input});
+}
+
+//
+// Floating point
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[-42.5, 0, 1.25, 42.5]     "), SV("{:27}"), input);
+  check(SV("[-42.5, 0, 1.25, 42.5]*****"), SV("{:*<27}"), input);
+  check(SV("__[-42.5, 0, 1.25, 42.5]___"), SV("{:_^27}"), input);
+  check(SV("#####[-42.5, 0, 1.25, 42.5]"), SV("{:#>27}"), input);
+
+  check(SV("[-42.5, 0, 1.25, 42.5]     "), SV("{:{}}"), input, 27);
+  check(SV("[-42.5, 0, 1.25, 42.5]*****"), SV("{:*<{}}"), input, 27);
+  check(SV("__[-42.5, 0, 1.25, 42.5]___"), SV("{:_^{}}"), input, 27);
+  check(SV("#####[-42.5, 0, 1.25, 42.5]"), SV("{:#>{}}"), input, 27);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__-42.5, 0, 1.25, 42.5___"), SV("{:_^25n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[-42.5,     0,  1.25,  42.5]"), SV("{::5}"), input);
+  check(SV("[-42.5, 0****, 1.25*, 42.5*]"), SV("{::*<5}"), input);
+  check(SV("[-42.5, __0__, 1.25_, 42.5_]"), SV("{::_^5}"), input);
+  check(SV("[-42.5, ::::0, :1.25, :42.5]"), SV("{:::>5}"), input);
+
+  check(SV("[-42.5,     0,  1.25,  42.5]"), SV("{::{}}"), input, 5);
+  check(SV("[-42.5, 0****, 1.25*, 42.5*]"), SV("{::*<{}}"), input, 5);
+  check(SV("[-42.5, __0__, 1.25_, 42.5_]"), SV("{::_^{}}"), input, 5);
+  check(SV("[-42.5, ::::0, :1.25, :42.5]"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::-}"), input);
+  check(SV("[-42.5, +0, +1.25, +42.5]"), SV("{::+}"), input);
+  check(SV("[-42.5,  0,  1.25,  42.5]"), SV("{:: }"), input);
+
+  // *** alternate form ***
+  check(SV("[-42.5, 0., 1.25, 42.5]"), SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check(SV("[-42.5, 00000, 01.25, 042.5]"), SV("{::05}"), input);
+  check(SV("[-42.5, 0000., 01.25, 042.5]"), SV("{::#05}"), input);
+
+  // *** precision ***
+  check(SV("[-42, 0, 1.2, 42]"), SV("{::.2}"), input);
+  check(SV("[-42.500, 0.000, 1.250, 42.500]"), SV("{::.3f}"), input);
+
+  check(SV("[-42, 0, 1.2, 42]"), SV("{::.{}}"), input, 2);
+  check(SV("[-42.500, 0.000, 1.250, 42.500]"), SV("{::.{}f}"), input, 3);
+
+  check_exception("The format-spec precision field doesn't contain a value or arg-id", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::L}"), input); // does not require locales present
+#ifndef TEST_HAS_NO_LOCALIZATION
+// TODO FMT Enable with locale testing active
+#  if 0
+  std::locale::global(std::locale(LOCALE_fr_FR_UTF_8));
+  check(SV("[-42,5, 0, 1,25, 42,5]"), SV("{::L}"), input);
+
+  std::locale::global(std::locale(LOCALE_en_US_UTF_8));
+  check(SV("[-42.5, 0, 1.25, 42.5]"), SV("{::L}"), input);
+
+  std::locale::global(std::locale::classic());
+#  endif
+#endif // TEST_HAS_NO_LOCALIZATION
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("aAeEfFgG"))
+    check_exception("The format-spec type has a type not supported for a floating-point argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^33::>5}"), input);
+  check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^{}::>5}"), input, 33);
+  check(SV("^^[-42.5, ::::0, :1.25, :42.5]^^^"), SV("{:^^{}::>{}}"), input, 33, 5);
+
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^33::>5.2}"), input);
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>5.2}"), input, 33);
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>{}.2}"), input, 33, 5);
+  check(SV("^^[::-42, ::::0, ::1.2, :::42]^^^"), SV("{:^^{}::>{}.{}}"), input, 33, 5, 2);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5.2}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}.2}"), input, 33);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}.{}}"), input, 33, 5);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_floating_point(TestFunction check, ExceptionTest check_exception) {
+  test_floating_point<CharT>(check, check_exception, std::array{-42.5f, 0.0f, 1.25f, 42.5f});
+  test_floating_point<CharT>(check, check_exception, std::vector{-42.5, 0.0, 1.25, 42.5});
+
+  std::array input{-42.5l, 0.0l, 1.25l, 42.5l};
+  test_floating_point<CharT>(check, check_exception, std::span{input});
+}
+
+//
+// Pointer
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV("[0x0]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[0x0]     "), SV("{:10}"), input);
+  check(SV("[0x0]*****"), SV("{:*<10}"), input);
+  check(SV("__[0x0]___"), SV("{:_^10}"), input);
+  check(SV("#####[0x0]"), SV("{:#>10}"), input);
+
+  check(SV("[0x0]     "), SV("{:{}}"), input, 10);
+  check(SV("[0x0]*****"), SV("{:*<{}}"), input, 10);
+  check(SV("__[0x0]___"), SV("{:_^{}}"), input, 10);
+  check(SV("#####[0x0]"), SV("{:#>{}}"), input, 10);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("_0x0_"), SV("{:_^5n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[  0x0]"), SV("{::5}"), input);
+  check(SV("[0x0**]"), SV("{::*<5}"), input);
+  check(SV("[_0x0_]"), SV("{::_^5}"), input);
+  check(SV("[::0x0]"), SV("{:::>5}"), input);
+
+  check(SV("[  0x0]"), SV("{::{}}"), input, 5);
+  check(SV("[0x0**]"), SV("{::*<{}}"), input, 5);
+  check(SV("[_0x0_]"), SV("{::_^{}}"), input, 5);
+  check(SV("[::0x0]"), SV("{:::>{}}"), input, 5);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("p"))
+    check_exception("The format-spec type has a type not supported for a pointer argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[::0x0]^^^"), SV("{:^^12::>5}"), input);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>5}"), input, 12);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
+
+  check(SV("^^[::0x0]^^^"), SV("{:^^12::>5}"), input);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>5}"), input, 12);
+  check(SV("^^[::0x0]^^^"), SV("{:^^{}::>{}}"), input, 12, 5);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 12);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pointer(TestFunction check, ExceptionTest check_exception) {
+  test_pointer<CharT>(check, check_exception, std::array{nullptr});
+  test_pointer<CharT>(check, check_exception, std::array{static_cast<const void*>(0)});
+  test_pointer<CharT>(check, check_exception, std::array{static_cast<void*>(0)});
+}
+
+//
+// String
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  check(SV(R"(["Hello", "world"])"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV(R"(["Hello", "world"]     )"), SV("{:23}"), input);
+  check(SV(R"(["Hello", "world"]*****)"), SV("{:*<23}"), input);
+  check(SV(R"(__["Hello", "world"]___)"), SV("{:_^23}"), input);
+  check(SV(R"(#####["Hello", "world"])"), SV("{:#>23}"), input);
+
+  check(SV(R"(["Hello", "world"]     )"), SV("{:{}}"), input, 23);
+  check(SV(R"(["Hello", "world"]*****)"), SV("{:*<{}}"), input, 23);
+  check(SV(R"(__["Hello", "world"]___)"), SV("{:_^{}}"), input, 23);
+  check(SV(R"(#####["Hello", "world"])"), SV("{:#>{}}"), input, 23);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV(R"(_"Hello", "world"_)"), SV("{:_^18n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV(R"([Hello   , world   ])"), SV("{::8}"), input);
+  check(SV(R"([Hello***, world***])"), SV("{::*<8}"), input);
+  check(SV(R"([_Hello__, _world__])"), SV("{::_^8}"), input);
+  check(SV(R"([:::Hello, :::world])"), SV("{:::>8}"), input);
+
+  check(SV(R"([Hello   , world   ])"), SV("{::{}}"), input, 8);
+  check(SV(R"([Hello***, world***])"), SV("{::*<{}}"), input, 8);
+  check(SV(R"([_Hello__, _world__])"), SV("{::_^{}}"), input, 8);
+  check(SV(R"([:::Hello, :::world])"), SV("{:::>{}}"), input, 8);
+
+  check_exception("The format-spec fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check(SV(R"([Hel, wor])"), SV("{::.3}"), input);
+
+  check(SV(R"([Hel, wor])"), SV("{::.{}}"), input, 3);
+
+  check_exception("The format-spec precision field doesn't contain a value or arg-id", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s?"))
+    check_exception("The format-spec type has a type not supported for a string argument", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^25::>8}"), input);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>8}"), input, 25);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
+
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^25::>8}"), input);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>8}"), input, 25);
+  check(SV(R"(^^[:::Hello, :::world]^^^)"), SV("{:^^{}::>{}}"), input, 25, 8);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}::>8}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}::>{}}"), input, 25);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_string(TestFunction check, ExceptionTest check_exception) {
+  test_string<CharT>(check, check_exception, std::array{CSTR("Hello"), CSTR("world")});
+  test_string<CharT>(check, check_exception, std::array{STR("Hello"), STR("world")});
+  test_string<CharT>(check, check_exception, std::array{SV("Hello"), SV("world")});
+}
+
+//
+// Handle
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_status(TestFunction check, ExceptionTest check_exception) {
+  std::array input{status::foo, status::bar, status::foobar};
+
+  check(SV("[0xaaaa, 0x5555, 0xaa55]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[0xaaaa, 0x5555, 0xaa55]     "), SV("{:29}"), input);
+  check(SV("[0xaaaa, 0x5555, 0xaa55]*****"), SV("{:*<29}"), input);
+  check(SV("__[0xaaaa, 0x5555, 0xaa55]___"), SV("{:_^29}"), input);
+  check(SV("#####[0xaaaa, 0x5555, 0xaa55]"), SV("{:#>29}"), input);
+
+  check(SV("[0xaaaa, 0x5555, 0xaa55]     "), SV("{:{}}"), input, 29);
+  check(SV("[0xaaaa, 0x5555, 0xaa55]*****"), SV("{:*<{}}"), input, 29);
+  check(SV("__[0xaaaa, 0x5555, 0xaa55]___"), SV("{:_^{}}"), input, 29);
+  check(SV("#####[0xaaaa, 0x5555, 0xaa55]"), SV("{:#>{}}"), input, 29);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__0xaaaa, 0x5555, 0xaa55___"), SV("{:_^27n}"), input);
+
+  // *** type ***
+  check_exception("The range-format-spec type m requires two elements for a pair or tuple", SV("{:m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check_exception("The format-spec type has a type not supported for a status argument", SV("{::*<7}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("sxX"))
+    check_exception("The format-spec type has a type not supported for a status argument", fmt, input);
+
+  check(SV("[0xaaaa, 0x5555, 0xaa55]"), SV("{::x}"), input);
+  check(SV("[0XAAAA, 0X5555, 0XAA55]"), SV("{::X}"), input);
+  check(SV("[foo, bar, foobar]"), SV("{::s}"), input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[0XAAAA, 0X5555, 0XAA55]^^^"), SV("{:^^29:X}"), input);
+  check(SV("^^[0XAAAA, 0X5555, 0XAA55]^^^"), SV("{:^^{}:X}"), input, 29);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:X}"), input);
+}
+
+//
+// Pair
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pair_tuple(TestFunction check, ExceptionTest check_exception, auto&& input) {
+  // [format.range.formatter]/3
+  //   For range_formatter<T, charT>, the format-spec in a
+  //   range-underlying-spec, if any, is interpreted by formatter<T, charT>.
+  //
+  //   template<class ParseContext>
+  //   constexpr typename ParseContext::iterator
+  //    parse(ParseContext& ctx);
+  // [format.tuple]/7
+  //   ... if e.set_debug_format() is a valid expression, calls
+  //   e.set_debug_format().
+  // So when there is no range-underlying-spec, there is no need to call parse
+  // thus the char element is not escaped.
+  // TODO FMT P2733 addresses this issue.
+  check(SV("[(1, a), (42, *)]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[(1, a), (42, *)]     "), SV("{:22}"), input);
+  check(SV("[(1, a), (42, *)]*****"), SV("{:*<22}"), input);
+  check(SV("__[(1, a), (42, *)]___"), SV("{:_^22}"), input);
+  check(SV("#####[(1, a), (42, *)]"), SV("{:#>22}"), input);
+
+  check(SV("[(1, a), (42, *)]     "), SV("{:{}}"), input, 22);
+  check(SV("[(1, a), (42, *)]*****"), SV("{:*<{}}"), input, 22);
+  check(SV("__[(1, a), (42, *)]___"), SV("{:_^{}}"), input, 22);
+  check(SV("#####[(1, a), (42, *)]"), SV("{:#>{}}"), input, 22);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__(1, a), (42, *)___"), SV("{:_^20n}"), input);
+  check(SV("__(1, a), (42, *)___"), SV("{:_^20nm}"), input); // m should have no effect
+
+  // *** type ***
+  check(SV("__{(1, a), (42, *)}___"), SV("{:_^22m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[(1, 'a')   , (42, '*')  ]"), SV("{::11}"), input);
+  check(SV("[(1, 'a')***, (42, '*')**]"), SV("{::*<11}"), input);
+  check(SV("[_(1, 'a')__, _(42, '*')_]"), SV("{::_^11}"), input);
+  check(SV("[###(1, 'a'), ##(42, '*')]"), SV("{::#>11}"), input);
+
+  check(SV("[(1, 'a')   , (42, '*')  ]"), SV("{::{}}"), input, 11);
+  check(SV("[(1, 'a')***, (42, '*')**]"), SV("{::*<{}}"), input, 11);
+  check(SV("[_(1, 'a')__, _(42, '*')_]"), SV("{::_^{}}"), input, 11);
+  check(SV("[###(1, 'a'), ##(42, '*')]"), SV("{::#>{}}"), input, 11);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("[1: 'a', 42: '*']"), SV("{::m}"), input);
+  check(SV("[1, 'a', 42, '*']"), SV("{::n}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^31:#>11}"), input);
+  check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^31:#>11}"), input);
+  check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^{}:#>11}"), input, 31);
+  check(SV("^^[###(1, 'a'), ##(42, '*')]^^^"), SV("{:^^{}:#>{}}"), input, 31, 11);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 31);
+
+  check(SV("1: 'a', 42: '*'"), SV("{:n:m}"), input);
+  check(SV("1, 'a', 42, '*'"), SV("{:n:n}"), input);
+  check(SV("{1: 'a', 42: '*'}"), SV("{:m:m}"), input);
+  check(SV("{1, 'a', 42, '*'}"), SV("{:m:n}"), input);
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pair_tuple(TestFunction check, ExceptionTest check_exception) {
+  test_pair_tuple<CharT>(
+      check, check_exception, std::array{std::make_pair(1, CharT('a')), std::make_pair(42, CharT('*'))});
+  test_pair_tuple<CharT>(
+      check, check_exception, std::array{std::make_tuple(1, CharT('a')), std::make_tuple(42, CharT('*'))});
+}
+
+//
+// Tuple 1
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int(TestFunction check, ExceptionTest check_exception) {
+  std::array input{std::make_tuple(42), std::make_tuple(99)};
+
+  check(SV("[(42), (99)]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[(42), (99)]     "), SV("{:17}"), input);
+  check(SV("[(42), (99)]*****"), SV("{:*<17}"), input);
+  check(SV("__[(42), (99)]___"), SV("{:_^17}"), input);
+  check(SV("#####[(42), (99)]"), SV("{:#>17}"), input);
+
+  check(SV("[(42), (99)]     "), SV("{:{}}"), input, 17);
+  check(SV("[(42), (99)]*****"), SV("{:*<{}}"), input, 17);
+  check(SV("__[(42), (99)]___"), SV("{:_^{}}"), input, 17);
+  check(SV("#####[(42), (99)]"), SV("{:#>{}}"), input, 17);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__(42), (99)___"), SV("{:_^15n}"), input);
+
+  // *** type ***
+  check(SV("__{(42), (99)}___"), SV("{:_^17m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[(42)   , (99)   ]"), SV("{::7}"), input);
+  check(SV("[(42)***, (99)***]"), SV("{::*<7}"), input);
+  check(SV("[_(42)__, _(99)__]"), SV("{::_^7}"), input);
+  check(SV("[###(42), ###(99)]"), SV("{::#>7}"), input);
+
+  check(SV("[(42)   , (99)   ]"), SV("{::{}}"), input, 7);
+  check(SV("[(42)***, (99)***]"), SV("{::*<{}}"), input, 7);
+  check(SV("[_(42)__, _(99)__]"), SV("{::_^{}}"), input, 7);
+  check(SV("[###(42), ###(99)]"), SV("{::#>{}}"), input, 7);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("[42, 99]"), SV("{::n}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>(""))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^23:#>7}"), input);
+  check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^23:#>7}"), input);
+  check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^{}:#>7}"), input, 23);
+  check(SV("^^[###(42), ###(99)]^^^"), SV("{:^^{}:#>{}}"), input, 23, 7);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 23);
+}
+
+//
+// Tuple 3
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int_int_int(TestFunction check, ExceptionTest check_exception) {
+  std::array input{std::make_tuple(42, 99, 0), std::make_tuple(1, 10, 100)};
+
+  check(SV("[(42, 99, 0), (1, 10, 100)]"), SV("{}"), input);
+
+  // ***** underlying has no format-spec
+
+  // *** align-fill & width ***
+  check(SV("[(42, 99, 0), (1, 10, 100)]     "), SV("{:32}"), input);
+  check(SV("[(42, 99, 0), (1, 10, 100)]*****"), SV("{:*<32}"), input);
+  check(SV("__[(42, 99, 0), (1, 10, 100)]___"), SV("{:_^32}"), input);
+  check(SV("#####[(42, 99, 0), (1, 10, 100)]"), SV("{:#>32}"), input);
+
+  check(SV("[(42, 99, 0), (1, 10, 100)]     "), SV("{:{}}"), input, 32);
+  check(SV("[(42, 99, 0), (1, 10, 100)]*****"), SV("{:*<{}}"), input, 32);
+  check(SV("__[(42, 99, 0), (1, 10, 100)]___"), SV("{:_^{}}"), input, 32);
+  check(SV("#####[(42, 99, 0), (1, 10, 100)]"), SV("{:#>{}}"), input, 32);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** n
+  check(SV("__(42, 99, 0), (1, 10, 100)___"), SV("{:_^30n}"), input);
+
+  // *** type ***
+  check(SV("__{(42, 99, 0), (1, 10, 100)}___"), SV("{:_^32m}"), input);
+  check_exception("The range-format-spec type s requires formatting a character type", SV("{:s}"), input);
+  check_exception("The range-format-spec type ?s requires formatting a character type", SV("{:?s}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Only underlying has a format-spec
+  check(SV("[(42, 99, 0)   , (1, 10, 100)  ]"), SV("{::14}"), input);
+  check(SV("[(42, 99, 0)***, (1, 10, 100)**]"), SV("{::*<14}"), input);
+  check(SV("[_(42, 99, 0)__, _(1, 10, 100)_]"), SV("{::_^14}"), input);
+  check(SV("[###(42, 99, 0), ##(1, 10, 100)]"), SV("{::#>14}"), input);
+
+  check(SV("[(42, 99, 0)   , (1, 10, 100)  ]"), SV("{::{}}"), input, 14);
+  check(SV("[(42, 99, 0)***, (1, 10, 100)**]"), SV("{::*<{}}"), input, 14);
+  check(SV("[_(42, 99, 0)__, _(1, 10, 100)_]"), SV("{::_^{}}"), input, 14);
+  check(SV("[###(42, 99, 0), ##(1, 10, 100)]"), SV("{::#>{}}"), input, 14);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:::<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::{<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{::05}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{::L}"), input);
+
+  // *** type ***
+  check(SV("[42, 99, 0, 1, 10, 100]"), SV("{::n}"), input);
+  for (std::basic_string_view<CharT> fmt : fmt_invalid_nested_types<CharT>("s"))
+    check_exception("The format-spec should consume the input or end with a '}'", fmt, input);
+
+  // ***** Both have a format-spec
+  check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^37:#>14}"), input);
+  check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^37:#>14}"), input);
+  check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^{}:#>14}"), input, 37);
+  check(SV("^^[###(42, 99, 0), ##(1, 10, 100)]^^^"), SV("{:^^{}:#>{}}"), input, 37, 14);
+
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>5}"), input);
+  check_exception("Argument index out of bounds", SV("{:^^{}:#>{}}"), input, 37);
+}
+
+//
+// Ranges
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_with_ranges(TestFunction check, ExceptionTest check_exception, auto&& iter) {
+  std::ranges::subrange range{std::move(iter), std::default_sentinel};
+  test_int<CharT>(check, check_exception, std::move(range));
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_with_ranges(TestFunction check, ExceptionTest check_exception) {
+  std::array input{1, 2, 42, -42};
+  test_with_ranges<CharT>(
+      check, check_exception, std::counted_iterator{cpp20_input_iterator<int*>(input.data()), input.size()});
+  test_with_ranges<CharT>(
+      check, check_exception, std::counted_iterator{forward_iterator<int*>(input.data()), input.size()});
+  test_with_ranges<CharT>(
+      check, check_exception, std::counted_iterator{bidirectional_iterator<int*>(input.data()), input.size()});
+  test_with_ranges<CharT>(
+      check, check_exception, std::counted_iterator{random_access_iterator<int*>(input.data()), input.size()});
+  test_with_ranges<CharT>(
+      check, check_exception, std::counted_iterator{contiguous_iterator<int*>(input.data()), input.size()});
+}
+
+//
+// Adaptor
+//
+
+template <class CharT>
+class non_contiguous {
+  // A deque iterator is random access, but not contiguous.
+  using adaptee = std::deque<CharT>;
+
+public:
+  using iterator = typename adaptee::iterator;
+  using pointer  = typename adaptee::pointer;
+
+  iterator begin() { return data_.begin(); }
+  iterator end() { return data_.end(); }
+
+  explicit non_contiguous(adaptee&& data) : data_(std::move(data)) {}
+
+private:
+  adaptee data_;
+};
+
+template <class CharT>
+class contiguous {
+  // A vector iterator is contiguous.
+  using adaptee = std::vector<CharT>;
+
+public:
+  using iterator = typename adaptee::iterator;
+  using pointer  = typename adaptee::pointer;
+
+  iterator begin() { return data_.begin(); }
+  iterator end() { return data_.end(); }
+
+  explicit contiguous(adaptee&& data) : data_(std::move(data)) {}
+
+private:
+  adaptee data_;
+};
+
+// This tests two different implementations in libc++. A basic_string_view
+// formatter if the range is contiguous, a basic_string otherwise.
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_adaptor(TestFunction check, ExceptionTest check_exception) {
+  static_assert(std::format_kind<non_contiguous<CharT>> == std::range_format::sequence);
+  static_assert(std::ranges::sized_range<non_contiguous<CharT>>);
+  static_assert(!std::ranges::contiguous_range<non_contiguous<CharT>>);
+  test_char_string<CharT>(
+      check,
+      check_exception,
+      non_contiguous<CharT>{std::deque{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')}});
+
+  static_assert(std::format_kind<contiguous<CharT>> == std::range_format::sequence);
+  static_assert(std::ranges::sized_range<contiguous<CharT>>);
+  static_assert(std::ranges::contiguous_range<contiguous<CharT>>);
+  test_char_string<CharT>(check,
+                          check_exception,
+                          contiguous<CharT>{std::vector{CharT('H'), CharT('e'), CharT('l'), CharT('l'), CharT('o')}});
+}
+
+//
+// Driver
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void format_tests(TestFunction check, ExceptionTest check_exception) {
+  test_char<CharT>(check, check_exception);
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+  if (std::same_as<CharT, wchar_t>) // avoid testing twice
+    test_char_to_wchar(check, check_exception);
+#endif
+  test_bool<CharT>(check, check_exception);
+  test_int<CharT>(check, check_exception);
+  test_floating_point<CharT>(check, check_exception);
+  test_pointer<CharT>(check, check_exception);
+  test_string<CharT>(check, check_exception);
+
+  test_status<CharT>(check, check_exception); // Has its own handler with its own parser
+
+  test_pair_tuple<CharT>(check, check_exception);
+  test_tuple_int<CharT>(check, check_exception);
+  test_tuple_int_int_int<CharT>(check, check_exception);
+
+  test_with_ranges<CharT>(check, check_exception);
+
+  test_adaptor<CharT>(check, check_exception);
+}
+
+#endif // TEST_STD_UTILITIES_FORMAT_FORMAT_RANGE_FORMAT_RANGE_FORMATTER_FORMAT_FUNCTIONS_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.vformat.pass.cpp
new file mode 100644
index 0000000..c473893
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.functions.vformat.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+//  template<class T, class charT = char>
+//    requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+//  class range_formatter;
+
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch (const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  format_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  format_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.pass.cpp
new file mode 100644
index 0000000..acfe8cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/format.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class T, class charT = char>
+//   requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+// class range_formatter
+
+// template<class FormatContext>
+//   typename FormatContext::iterator
+//     format(const T& ref, FormatContext& ctx) const;
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <vector>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+void test_format(StringViewT expected, std::vector<int> arg) {
+  using CharT      = typename StringViewT::value_type;
+  using String     = std::basic_string<CharT>;
+  using OutIt      = std::back_insert_iterator<String>;
+  using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+  const std::range_formatter<int, CharT> formatter;
+
+  String result;
+  OutIt out             = std::back_inserter(result);
+  FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class CharT>
+void test_fmt() {
+  test_format(SV("[1]"), std::vector<int>{1});
+  test_format(SV("[0]"), std::vector<int>{0});
+}
+
+void test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/parse.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/parse.pass.cpp
new file mode 100644
index 0000000..ce1c0c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/parse.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class T, class charT = char>
+//   requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+// class range_formatter
+
+// template<class ParseContext>
+//   constexpr typename ParseContext::iterator
+//     parse(ParseContext& ctx);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT>
+constexpr void test_parse(StringViewT fmt) {
+  using CharT    = typename StringViewT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::range_formatter<int, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+}
+
+template <class CharT>
+constexpr void test_fmt() {
+  test_parse(SV(""));
+  test_parse(SV(":d"));
+
+  test_parse(SV("}"));
+  test_parse(SV(":d}"));
+}
+
+constexpr bool test() {
+  test_fmt<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_fmt<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/set_brackets.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/set_brackets.pass.cpp
new file mode 100644
index 0000000..fe2d72c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/set_brackets.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class T, class charT = char>
+//   requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+// class range_formatter
+
+// constexpr void constexpr void set_brackets(basic_string_view<charT> opening,
+//                                            basic_string_view<charT> closing);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <format>
+#include <cassert>
+#include <type_traits>
+#include <vector>
+
+#include "make_string.h"
+#include "test_format_context.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+constexpr void test_setter() {
+  std::range_formatter<int, CharT> formatter;
+  formatter.set_brackets(SV("open"), SV("close"));
+
+  // Note there is no direct way to validate this function modified the object.
+  if (!std::is_constant_evaluated()) {
+    using String     = std::basic_string<CharT>;
+    using OutIt      = std::back_insert_iterator<String>;
+    using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+    String result;
+    OutIt out             = std::back_inserter(result);
+    FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>());
+    formatter.format(std::vector<int>{0, 42, 99}, format_ctx);
+    assert(result == SV("open0, 42, 99close"));
+  }
+}
+
+constexpr bool test() {
+  test_setter<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_setter<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/set_separator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/set_separator.pass.cpp
new file mode 100644
index 0000000..413f5b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/set_separator.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class T, class charT = char>
+//   requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+// class range_formatter
+
+// constexpr void set_separator(basic_string_view<charT> sep);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions test.
+
+#include <format>
+#include <cassert>
+#include <type_traits>
+#include <vector>
+
+#include "make_string.h"
+#include "test_format_context.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT>
+constexpr void test_setter() {
+  std::range_formatter<int, CharT> formatter;
+  formatter.set_separator(SV("sep"));
+
+  // Note there is no direct way to validate this function modified the object.
+  if (!std::is_constant_evaluated()) {
+    using String     = std::basic_string<CharT>;
+    using OutIt      = std::back_insert_iterator<String>;
+    using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+    String result;
+    OutIt out             = std::back_inserter(result);
+    FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>());
+    formatter.format(std::vector<int>{0, 42, 99}, format_ctx);
+    assert(result == SV("[0sep42sep99]"));
+  }
+}
+
+constexpr bool test() {
+  test_setter<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_setter<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/underlying.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/underlying.pass.cpp
new file mode 100644
index 0000000..7d819d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.range/format.range.formatter/underlying.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class T, class charT = char>
+//   requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
+// class range_formatter
+
+// constexpr formatter<T, charT>& underlying();
+// constexpr const formatter<T, charT>& underlying() const;
+
+#include <concepts>
+#include <format>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test_underlying() {
+  {
+    std::range_formatter<int, CharT> formatter;
+    [[maybe_unused]] std::same_as<std::formatter<int, CharT>&> decltype(auto) underlying = formatter.underlying();
+  }
+  {
+    const std::range_formatter<int, CharT> formatter;
+    [[maybe_unused]] std::same_as<const std::formatter<int, CharT>&> decltype(auto) underlying = formatter.underlying();
+  }
+}
+
+constexpr bool test() {
+  test_underlying<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test_underlying<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.syn/format_to_n_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.syn/format_to_n_result.pass.cpp
new file mode 100644
index 0000000..6b21023
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.syn/format_to_n_result.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// <format>
+
+// struct format_to_n_result
+
+// [format.syn]/1
+// The class template format_to_n_result has the template parameters, data
+// members, and special members specified above. It has no base classes or
+// members other than those specified.
+
+#include <format>
+
+#include <cassert>
+#include <concepts>
+
+#include "test_macros.h"
+
+template <class CharT>
+constexpr void test() {
+  std::format_to_n_result<CharT*> v{nullptr, std::iter_difference_t<CharT*>{42}};
+
+  auto [out, size] = v;
+  static_assert(std::same_as<decltype(out), CharT*>);
+  assert(out == v.out);
+  static_assert(std::same_as<decltype(size), std::iter_difference_t<CharT*>>);
+  assert(size == v.size);
+}
+
+constexpr bool test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+  return true;
+}
+
+int main(int, char**) {
+  assert(test());
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.format.pass.cpp
new file mode 100644
index 0000000..6f64016
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.format.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class charT, formattable<charT>... Ts>
+//   struct formatter<pair-or-tuple<Ts...>, charT>
+//
+// tested in the format functions
+//
+// template<class... Args>
+//   string format(format-string<Args...> fmt, const Args&... args);
+// template<class... Args>
+//   wstring format(wformat-string<Args...> fmt, const Args&... args);
+
+#include <format>
+#include <cassert>
+
+#include "format.functions.tests.h"
+#include "test_format_string.h"
+#include "test_macros.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
+  // After P2216 most exceptions thrown by std::format become ill-formed.
+  // Therefore this tests does nothing.
+  // A basic ill-formed test is done in format.verify.cpp
+  // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
+};
+
+int main(int, char**) {
+  run_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  run_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.format.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.format.verify.cpp
new file mode 100644
index 0000000..58685f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.format.verify.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+#include <format>
+
+#include <utility>
+#include <tuple>
+
+#include "test_macros.h"
+
+// clang-format off
+
+void f() {
+  std::format("{::}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{::^}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:+}", std::make_pair(0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:m}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format("{:m}", std::make_tuple(0, 0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  std::format(L"{::}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{::^}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:+}", std::make_pair(0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:m}", std::make_tuple(0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+
+  std::format(L"{:m}", std::make_tuple(0, 0, 0)); // expected-error-re{{call to consteval function '{{.*}}' is not a constant expression}}
+  // expected-note@*:* {{non-constexpr function '__throw_format_error' cannot be used in a constant expression}}
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.tests.h b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.tests.h
new file mode 100644
index 0000000..3f7a1fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.tests.h
@@ -0,0 +1,373 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_FORMAT_FORMAT_TUPLE_FORMAT_TESTS_H
+#define TEST_STD_UTILITIES_FORMAT_FORMAT_TUPLE_FORMAT_TESTS_H
+
+#include <concepts>
+#include <format>
+
+#include "format.functions.common.h"
+
+enum class color { black, red, gold };
+
+template <class CharT>
+struct std::formatter<color, CharT> : std::formatter<basic_string_view<CharT>, CharT> {
+  static constexpr basic_string_view<CharT> color_names[] = {SV("black"), SV("red"), SV("gold")};
+  auto format(color c, auto& ctx) const {
+    return formatter<basic_string_view<CharT>, CharT>::format(color_names[static_cast<int>(c)], ctx);
+  }
+};
+
+//
+// Generic tests for a tuple and pair with two elements.
+//
+template <class CharT, class TestFunction, class ExceptionTest, class TupleOrPair>
+void test_tuple_or_pair_int_int(TestFunction check, ExceptionTest check_exception, TupleOrPair&& input) {
+  check(SV("(42, 99)"), SV("{}"), input);
+
+  // *** align-fill & width ***
+  check(SV("(42, 99)     "), SV("{:13}"), input);
+  check(SV("(42, 99)*****"), SV("{:*<13}"), input);
+  check(SV("__(42, 99)___"), SV("{:_^13}"), input);
+  check(SV("#####(42, 99)"), SV("{:#>13}"), input);
+
+  check(SV("(42, 99)     "), SV("{:{}}"), input, 13);
+  check(SV("(42, 99)*****"), SV("{:*<{}}"), input, 13);
+  check(SV("__(42, 99)___"), SV("{:_^{}}"), input, 13);
+  check(SV("#####(42, 99)"), SV("{:#>{}}"), input, 13);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** type ***
+  check(SV("__42: 99___"), SV("{:_^11m}"), input);
+  check(SV("__42, 99___"), SV("{:_^11n}"), input);
+
+  for (CharT c : SV("aAbBcdeEfFgGopsxX?")) {
+    check_exception("The format-spec should consume the input or end with a '}'",
+                    std::basic_string_view{STR("{:") + c + STR("}")},
+                    input);
+  }
+}
+
+template <class CharT, class TestFunction, class ExceptionTest, class TupleOrPair>
+void test_tuple_or_pair_int_string(TestFunction check, ExceptionTest check_exception, TupleOrPair&& input) {
+  check(SV("(42, \"hello\")"), SV("{}"), input);
+
+  // *** align-fill & width ***
+  check(SV("(42, \"hello\")     "), SV("{:18}"), input);
+  check(SV("(42, \"hello\")*****"), SV("{:*<18}"), input);
+  check(SV("__(42, \"hello\")___"), SV("{:_^18}"), input);
+  check(SV("#####(42, \"hello\")"), SV("{:#>18}"), input);
+
+  check(SV("(42, \"hello\")     "), SV("{:{}}"), input, 18);
+  check(SV("(42, \"hello\")*****"), SV("{:*<{}}"), input, 18);
+  check(SV("__(42, \"hello\")___"), SV("{:_^{}}"), input, 18);
+  check(SV("#####(42, \"hello\")"), SV("{:#>{}}"), input, 18);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** type ***
+  check(SV("__42: \"hello\"___"), SV("{:_^16m}"), input);
+  check(SV("__42, \"hello\"___"), SV("{:_^16n}"), input);
+
+  for (CharT c : SV("aAbBcdeEfFgGopsxX?")) {
+    check_exception("The format-spec should consume the input or end with a '}'",
+                    std::basic_string_view{STR("{:") + c + STR("}")},
+                    input);
+  }
+}
+
+template <class CharT, class TestFunction, class TupleOrPair>
+void test_escaping(TestFunction check, TupleOrPair&& input) {
+  static_assert(std::same_as<std::remove_cvref_t<decltype(std::get<0>(input))>, CharT>);
+  static_assert(std::same_as<std::remove_cvref_t<decltype(std::get<1>(input))>, std::basic_string<CharT>>);
+
+  check(SV(R"(('*', ""))"), SV("{}"), input);
+
+  // Char
+  std::get<0>(input) = CharT('\t');
+  check(SV(R"(('\t', ""))"), SV("{}"), input);
+  std::get<0>(input) = CharT('\n');
+  check(SV(R"(('\n', ""))"), SV("{}"), input);
+  std::get<0>(input) = CharT('\0');
+  check(SV(R"(('\u{0}', ""))"), SV("{}"), input);
+
+  // String
+  std::get<0>(input) = CharT('*');
+  std::get<1>(input) = SV("hellö");
+  check(SV("('*', \"hellö\")"), SV("{}"), input);
+}
+
+//
+// pair tests
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pair_int_int(TestFunction check, ExceptionTest check_exception) {
+  test_tuple_or_pair_int_int<CharT>(check, check_exception, std::make_pair(42, 99));
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_pair_int_string(TestFunction check, ExceptionTest check_exception) {
+  test_tuple_or_pair_int_string<CharT>(check, check_exception, std::make_pair(42, SV("hello")));
+  test_tuple_or_pair_int_string<CharT>(check, check_exception, std::make_pair(42, STR("hello")));
+  test_tuple_or_pair_int_string<CharT>(check, check_exception, std::make_pair(42, CSTR("hello")));
+}
+
+//
+// tuple tests
+//
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int(TestFunction check, ExceptionTest check_exception) {
+  auto input = std::make_tuple(42);
+
+  check(SV("(42)"), SV("{}"), input);
+
+  // *** align-fill & width ***
+  check(SV("(42)     "), SV("{:9}"), input);
+  check(SV("(42)*****"), SV("{:*<9}"), input);
+  check(SV("__(42)___"), SV("{:_^9}"), input);
+  check(SV("#####(42)"), SV("{:#>9}"), input);
+
+  check(SV("(42)     "), SV("{:{}}"), input, 9);
+  check(SV("(42)*****"), SV("{:*<{}}"), input, 9);
+  check(SV("__(42)___"), SV("{:_^{}}"), input, 9);
+  check(SV("#####(42)"), SV("{:#>{}}"), input, 9);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** type ***
+  check_exception("The format specifier m requires a pair or a two-element tuple", SV("{:m}"), input);
+  check(SV("__42___"), SV("{:_^7n}"), input);
+
+  for (CharT c : SV("aAbBcdeEfFgGopsxX?")) {
+    check_exception("The format-spec should consume the input or end with a '}'",
+                    std::basic_string_view{STR("{:") + c + STR("}")},
+                    input);
+  }
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int_string_color(TestFunction check, ExceptionTest check_exception) {
+  const auto input = std::make_tuple(42, SV("hello"), color::red);
+
+  check(SV("(42, \"hello\", \"red\")"), SV("{}"), input);
+
+  // *** align-fill & width ***
+  check(SV("(42, \"hello\", \"red\")     "), SV("{:25}"), input);
+  check(SV("(42, \"hello\", \"red\")*****"), SV("{:*<25}"), input);
+  check(SV("__(42, \"hello\", \"red\")___"), SV("{:_^25}"), input);
+  check(SV("#####(42, \"hello\", \"red\")"), SV("{:#>25}"), input);
+
+  check(SV("(42, \"hello\", \"red\")     "), SV("{:{}}"), input, 25);
+  check(SV("(42, \"hello\", \"red\")*****"), SV("{:*<{}}"), input, 25);
+  check(SV("__(42, \"hello\", \"red\")___"), SV("{:_^{}}"), input, 25);
+  check(SV("#####(42, \"hello\", \"red\")"), SV("{:#>{}}"), input, 25);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** type ***
+  check_exception("The format specifier m requires a pair or a two-element tuple", SV("{:m}"), input);
+  check(SV("__42, \"hello\", \"red\"___"), SV("{:_^23n}"), input);
+
+  for (CharT c : SV("aAbBcdeEfFgGopsxX?")) {
+    check_exception("The format-spec should consume the input or end with a '}'",
+                    std::basic_string_view{STR("{:") + c + STR("}")},
+                    input);
+  }
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int_int(TestFunction check, ExceptionTest check_exception) {
+  test_tuple_or_pair_int_int<CharT>(check, check_exception, std::make_tuple(42, 99));
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void test_tuple_int_string(TestFunction check, ExceptionTest check_exception) {
+  test_tuple_or_pair_int_string<CharT>(check, check_exception, std::make_tuple(42, SV("hello")));
+  test_tuple_or_pair_int_string<CharT>(check, check_exception, std::make_tuple(42, STR("hello")));
+  test_tuple_or_pair_int_string<CharT>(check, check_exception, std::make_tuple(42, CSTR("hello")));
+}
+
+//
+// nested tests
+//
+
+template <class CharT, class TestFunction, class ExceptionTest, class Nested>
+void test_nested(TestFunction check, ExceptionTest check_exception, Nested&& input) {
+  // [format.formatter.spec]/2
+  //   A debug-enabled specialization of formatter additionally provides a
+  //   public, constexpr, non-static member function set_debug_format()
+  //   which modifies the state of the formatter to be as if the type of the
+  //   std-format-spec parsed by the last call to parse were ?.
+  // pair and tuple are not debug-enabled specializations to the
+  // set_debug_format is not propagated. The paper
+  //   P2733 Fix handling of empty specifiers in std::format
+  // addressed this.
+
+  check(SV("(42, (hello, red))"), SV("{}"), input);
+
+  // *** align-fill & width ***
+  check(SV("(42, (hello, red))     "), SV("{:23}"), input);
+  check(SV("(42, (hello, red))*****"), SV("{:*<23}"), input);
+  check(SV("__(42, (hello, red))___"), SV("{:_^23}"), input);
+  check(SV("#####(42, (hello, red))"), SV("{:#>23}"), input);
+
+  check(SV("(42, (hello, red))     "), SV("{:{}}"), input, 23);
+  check(SV("(42, (hello, red))*****"), SV("{:*<{}}"), input, 23);
+  check(SV("__(42, (hello, red))___"), SV("{:_^{}}"), input, 23);
+  check(SV("#####(42, (hello, red))"), SV("{:#>{}}"), input, 23);
+
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:}<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{:{<}"), input);
+  check_exception("The format-spec range-fill field contains an invalid character", SV("{::<}"), input);
+
+  // *** sign ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:-}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:+}"), input);
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{: }"), input);
+
+  // *** alternate form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:#}"), input);
+
+  // *** zero-padding ***
+  check_exception("A format-spec width field shouldn't have a leading zero", SV("{:0}"), input);
+
+  // *** precision ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:.}"), input);
+
+  // *** locale-specific form ***
+  check_exception("The format-spec should consume the input or end with a '}'", SV("{:L}"), input);
+
+  // *** type ***
+  check(SV("__42: (hello, red)___"), SV("{:_^21m}"), input);
+  check(SV("__42, (hello, red)___"), SV("{:_^21n}"), input);
+
+  for (CharT c : SV("aAbBcdeEfFgGopsxX?")) {
+    check_exception("The format-spec should consume the input or end with a '}'",
+                    std::basic_string_view{STR("{:") + c + STR("}")},
+                    input);
+  }
+}
+
+template <class CharT, class TestFunction, class ExceptionTest>
+void run_tests(TestFunction check, ExceptionTest check_exception) {
+  test_pair_int_int<CharT>(check, check_exception);
+  test_pair_int_string<CharT>(check, check_exception);
+
+  test_tuple_int<CharT>(check, check_exception);
+  test_tuple_int_int<CharT>(check, check_exception);
+  test_tuple_int_string<CharT>(check, check_exception);
+  test_tuple_int_string_color<CharT>(check, check_exception);
+
+  test_nested<CharT>(check, check_exception, std::make_pair(42, std::make_pair(SV("hello"), color::red)));
+  test_nested<CharT>(check, check_exception, std::make_pair(42, std::make_tuple(SV("hello"), color::red)));
+  test_nested<CharT>(check, check_exception, std::make_tuple(42, std::make_pair(SV("hello"), color::red)));
+  test_nested<CharT>(check, check_exception, std::make_tuple(42, std::make_tuple(SV("hello"), color::red)));
+
+  test_escaping<CharT>(check, std::make_pair(CharT('*'), STR("")));
+  test_escaping<CharT>(check, std::make_tuple(CharT('*'), STR("")));
+
+  // Test cvref-qualified types.
+  // clang-format off
+  check(SV("(42)"), SV("{}"), std::tuple<               int  >{42});
+  check(SV("(42)"), SV("{}"), std::tuple<const          int  >{42});
+  check(SV("(42)"), SV("{}"), std::tuple<      volatile int  >{42});
+  check(SV("(42)"), SV("{}"), std::tuple<const volatile int  >{42});
+
+  int answer = 42;
+  check(SV("(42)"), SV("{}"), std::tuple<               int& >{answer});
+  check(SV("(42)"), SV("{}"), std::tuple<const          int& >{answer});
+  check(SV("(42)"), SV("{}"), std::tuple<      volatile int& >{answer});
+  check(SV("(42)"), SV("{}"), std::tuple<const volatile int& >{answer});
+
+  check(SV("(42)"), SV("{}"), std::tuple<               int&&>{42});
+  check(SV("(42)"), SV("{}"), std::tuple<const          int&&>{42});
+  check(SV("(42)"), SV("{}"), std::tuple<      volatile int&&>{42});
+  check(SV("(42)"), SV("{}"), std::tuple<const volatile int&&>{42});
+  // clang-format on
+}
+
+#endif // TEST_STD_UTILITIES_FORMAT_FORMAT_TUPLE_FORMAT_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.vformat.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.vformat.pass.cpp
new file mode 100644
index 0000000..6853134
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.functions.vformat.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+// TODO FMT Evaluate gcc-12 status
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class charT, formattable<charT>... Ts>
+//   struct formatter<pair-or-tuple<Ts...>, charT>
+//
+// tested in the format functions
+//
+// string vformat(string_view fmt, format_args args);
+// wstring vformat(wstring_view fmt, wformat_args args);
+
+#include <format>
+#include <cassert>
+
+#include "test_macros.h"
+#include "format.functions.tests.h"
+#include "assert_macros.h"
+
+auto test = []<class CharT, class... Args>(
+                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
+  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+  TEST_REQUIRE(
+      out == expected,
+      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
+};
+
+auto test_exception =
+    []<class CharT, class... Args>(
+        [[maybe_unused]] std::string_view what,
+        [[maybe_unused]] std::basic_string_view<CharT> fmt,
+        [[maybe_unused]] Args&&... args) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      try {
+        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
+        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
+      } catch ([[maybe_unused]] const std::format_error& e) {
+        TEST_LIBCPP_REQUIRE(
+            e.what() == what,
+            test_concat_message(
+                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
+
+        return;
+      }
+      assert(false);
+#endif
+    };
+
+int main(int, char**) {
+  run_tests<char>(test, test_exception);
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  run_tests<wchar_t>(test, test_exception);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.pass.cpp
new file mode 100644
index 0000000..442df5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/format.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class charT, formattable<charT>... Ts>
+//   struct formatter<pair-or-tuple<Ts...>, charT>
+
+// template<class FormatContext>
+//   typename FormatContext::iterator
+//     format(see below& elems, FormatContext& ctx) const;
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions tests.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <tuple>
+#include <utility>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class StringViewT, class Arg>
+void test(StringViewT expected, Arg arg) {
+  using CharT      = typename StringViewT::value_type;
+  using String     = std::basic_string<CharT>;
+  using OutIt      = std::back_insert_iterator<String>;
+  using FormatCtxT = std::basic_format_context<OutIt, CharT>;
+
+  const std::formatter<Arg, CharT> formatter;
+
+  String result;
+  OutIt out             = std::back_inserter(result);
+  FormatCtxT format_ctx = test_format_context_create<OutIt, CharT>(out, std::make_format_args<FormatCtxT>(arg));
+  formatter.format(arg, format_ctx);
+  assert(result == expected);
+}
+
+template <class CharT>
+void test() {
+  test(SV("(1)"), std::tuple<int>{1});
+  test(SV("(1, 1)"), std::tuple<int, CharT>{1, CharT('1')});
+  test(SV("(1, 1)"), std::pair<int, CharT>{1, CharT('1')});
+  test(SV("(1, 1, 1)"), std::tuple<int, CharT, double>{1, CharT('1'), 1.0});
+}
+
+void test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/parse.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/parse.pass.cpp
new file mode 100644
index 0000000..05c9055
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/parse.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class charT, formattable<charT>... Ts>
+//   struct formatter<pair-or-tuple<Ts...>, charT>
+
+// template<class ParseContext>
+//   constexpr typename ParseContext::iterator
+//     parse(ParseContext& ctx);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions tests.
+
+#include <cassert>
+#include <concepts>
+#include <format>
+#include <tuple>
+#include <utility>
+
+#include "test_format_context.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class Arg, class StringViewT>
+constexpr void test(StringViewT fmt) {
+  using CharT    = typename StringViewT::value_type;
+  auto parse_ctx = std::basic_format_parse_context<CharT>(fmt);
+  std::formatter<Arg, CharT> formatter;
+  static_assert(std::semiregular<decltype(formatter)>);
+
+  std::same_as<typename StringViewT::iterator> auto it = formatter.parse(parse_ctx);
+  assert(it == fmt.end() - (!fmt.empty() && fmt.back() == '}'));
+}
+
+template <class CharT, class Arg>
+constexpr void test() {
+  test<Arg>(SV(""));
+  test<Arg>(SV("42"));
+
+  test<Arg>(SV("}"));
+  test<Arg>(SV("42}"));
+}
+
+template <class CharT>
+constexpr void test() {
+  test<CharT, std::tuple<int>>();
+  test<CharT, std::tuple<int, CharT>>();
+  test<CharT, std::pair<int, CharT>>();
+  test<CharT, std::tuple<int, CharT, double>>();
+}
+
+constexpr bool test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/set_brackets.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/set_brackets.pass.cpp
new file mode 100644
index 0000000..86c9845
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/set_brackets.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// template<class charT, formattable<charT>... Ts>
+//   struct formatter<pair-or-tuple<Ts...>, charT>
+
+// constexpr void constexpr void set_brackets(basic_string_view<charT> opening,
+//                                            basic_string_view<charT> closing);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions tests.
+
+#include <format>
+#include <tuple>
+#include <utility>
+
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT, class Arg>
+constexpr void test() {
+  std::formatter<Arg, CharT> formatter;
+  formatter.set_brackets(SV("open"), SV("close"));
+
+  // Note there is no direct way to validate this function modified the object.
+}
+
+template <class CharT>
+constexpr void test() {
+  test<CharT, std::tuple<int>>();
+  test<CharT, std::tuple<int, CharT>>();
+  test<CharT, std::pair<int, CharT>>();
+  test<CharT, std::tuple<int, CharT, double>>();
+}
+
+constexpr bool test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/set_separator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/set_separator.pass.cpp
new file mode 100644
index 0000000..fd2c827
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/format/format.tuple/set_separator.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// UNSUPPORTED: libcpp-has-no-incomplete-format
+
+// TODO FMT Fix this test using GCC, it currently times out.
+// UNSUPPORTED: gcc-12
+
+// This test requires the dylib support introduced in D92214.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}
+
+// <format>
+
+// class range_formatter
+// template<class charT, formattable<charT>... Ts>
+//   struct formatter<pair-or-tuple<Ts...>, charT>
+
+// constexpr void set_separator(basic_string_view<charT> sep);
+
+// Note this tests the basics of this function. It's tested in more detail in
+// the format functions tests.
+
+#include <format>
+#include <tuple>
+#include <utility>
+
+#include "make_string.h"
+
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+
+template <class CharT, class Arg>
+constexpr void test() {
+  std::formatter<Arg, CharT> formatter;
+  formatter.set_separator(SV("sep"));
+
+  // Note there is no direct way to validate this function modified the object.
+}
+
+template <class CharT>
+constexpr void test() {
+  test<CharT, std::tuple<int>>();
+  test<CharT, std::tuple<int, CharT>>();
+  test<CharT, std::pair<int, CharT>>();
+  test<CharT, std::tuple<int, CharT, double>>();
+}
+
+constexpr bool test() {
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp
new file mode 100644
index 0000000..6afdb0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// divides
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::divides<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(36, 4) == 9);
+#if TEST_STD_VER > 11
+    typedef std::divides<> F2;
+    const F2 f2 = F2();
+    assert(f2(36, 4) == 9);
+    assert(f2(36.0, 4) == 9);
+    assert(f2(18, 4.0) == 4.5); // exact in binary
+
+    constexpr int foo = std::divides<int> () (3, 2);
+    static_assert ( foo == 1, "" );
+
+    constexpr double bar = std::divides<> () (3.0, 2);
+    static_assert ( bar == 1.5, "" ); // exact in binary
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
new file mode 100644
index 0000000..273054c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// minus
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::minus<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(3, 2) == 1);
+#if TEST_STD_VER > 11
+    typedef std::minus<> F2;
+    const F2 f2 = F2();
+    assert(f2(3,2) == 1);
+    assert(f2(3.0, 2) == 1);
+    assert(f2(3, 2.5) == 0.5);
+
+    constexpr int foo = std::minus<int> () (3, 2);
+    static_assert ( foo == 1, "" );
+
+    constexpr double bar = std::minus<> () (3.0, 2);
+    static_assert ( bar == 1.0, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp
new file mode 100644
index 0000000..4ce6a0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// modulus
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::modulus<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(36, 8) == 4);
+#if TEST_STD_VER > 11
+    typedef std::modulus<> F2;
+    const F2 f2 = F2();
+    assert(f2(36, 8) == 4);
+    assert(f2(36L, 8) == 4);
+    assert(f2(36, 8L) == 4);
+
+    constexpr int foo = std::modulus<int> () (3, 2);
+    static_assert ( foo == 1, "" );
+
+    constexpr int bar = std::modulus<> () (3L, 2);
+    static_assert ( bar == 1, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp
new file mode 100644
index 0000000..d4f0a3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// multiplies
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::multiplies<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(3, 2) == 6);
+#if TEST_STD_VER > 11
+    typedef std::multiplies<> F2;
+    const F2 f2 = F2();
+    assert(f2(3,2) == 6);
+    assert(f2(3.0, 2) == 6);
+    assert(f2(3, 2.5) == 7.5); // exact in binary
+
+    constexpr int foo = std::multiplies<int> () (3, 2);
+    static_assert ( foo == 6, "" );
+
+    constexpr double bar = std::multiplies<> () (3.0, 2);
+    static_assert ( bar == 6.0, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/negate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/negate.pass.cpp
new file mode 100644
index 0000000..fd3d5f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/negate.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// negate
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::negate<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<F::argument_type, int>::value), "" );
+    static_assert((std::is_same<F::result_type, int>::value), "" );
+#endif
+    assert(f(36) == -36);
+#if TEST_STD_VER > 11
+    typedef std::negate<> F2;
+    const F2 f2 = F2();
+    assert(f2(36) == -36);
+    assert(f2(36L) == -36);
+    assert(f2(36.0) == -36);
+
+    constexpr int foo = std::negate<int> () (3);
+    static_assert ( foo == -3, "" );
+
+    constexpr double bar = std::negate<> () (3.0);
+    static_assert ( bar == -3.0, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
new file mode 100644
index 0000000..06eb172
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// plus
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::plus<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "");
+    static_assert((std::is_same<int, F::second_argument_type>::value), "");
+    static_assert((std::is_same<int, F::result_type>::value), "");
+#endif
+    assert(f(3, 2) == 5);
+#if TEST_STD_VER > 11
+    typedef std::plus<> F2;
+    const F2 f2 = F2();
+    assert(f2(3,2) == 5);
+    assert(f2(3.0, 2) == 5);
+    assert(f2(3, 2.5) == 5.5);
+
+    constexpr int foo = std::plus<int> () (3, 2);
+    static_assert ( foo == 5, "" );
+
+    constexpr double bar = std::plus<> () (3.0, 2);
+    static_assert ( bar == 5.0, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/transparent.pass.cpp
new file mode 100644
index 0000000..839c5aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/arithmetic.operations/transparent.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <functional>
+#include <string>
+
+#include "test_macros.h"
+
+template <class T>
+struct is_transparent
+{
+private:
+    struct two {char lx; char lxx;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::is_transparent* = 0);
+public:
+    static const bool value = sizeof(test<T>(0)) == 1;
+};
+
+
+int main(int, char**)
+{
+    static_assert ( !is_transparent<std::plus<int>>::value, "" );
+    static_assert ( !is_transparent<std::plus<std::string>>::value, "" );
+    static_assert (  is_transparent<std::plus<void>>::value, "" );
+    static_assert (  is_transparent<std::plus<>>::value, "" );
+
+    static_assert ( !is_transparent<std::minus<int>>::value, "" );
+    static_assert ( !is_transparent<std::minus<std::string>>::value, "" );
+    static_assert (  is_transparent<std::minus<void>>::value, "" );
+    static_assert (  is_transparent<std::minus<>>::value, "" );
+
+    static_assert ( !is_transparent<std::multiplies<int>>::value, "" );
+    static_assert ( !is_transparent<std::multiplies<std::string>>::value, "" );
+    static_assert (  is_transparent<std::multiplies<void>>::value, "" );
+    static_assert (  is_transparent<std::multiplies<>>::value, "" );
+
+    static_assert ( !is_transparent<std::divides<int>>::value, "" );
+    static_assert ( !is_transparent<std::divides<std::string>>::value, "" );
+    static_assert (  is_transparent<std::divides<void>>::value, "" );
+    static_assert (  is_transparent<std::divides<>>::value, "" );
+
+    static_assert ( !is_transparent<std::modulus<int>>::value, "" );
+    static_assert ( !is_transparent<std::modulus<std::string>>::value, "" );
+    static_assert (  is_transparent<std::modulus<void>>::value, "" );
+    static_assert (  is_transparent<std::modulus<>>::value, "" );
+
+    static_assert ( !is_transparent<std::negate<int>>::value, "" );
+    static_assert ( !is_transparent<std::negate<std::string>>::value, "" );
+    static_assert (  is_transparent<std::negate<void>>::value, "" );
+    static_assert (  is_transparent<std::negate<>>::value, "" );
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp
new file mode 100644
index 0000000..eeb87e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/PR23141_invoke_not_constexpr.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+// https://llvm.org/PR23141
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct Fun
+{
+  template<typename T, typename U>
+  void operator()(T &&, U &&) const
+  {
+    static_assert(std::is_same<U, int &>::value, "");
+  }
+};
+
+int main(int, char**)
+{
+    std::bind(Fun{}, std::placeholders::_1, 42)("hello");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/bind_return_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/bind_return_type.pass.cpp
new file mode 100644
index 0000000..0ba6e01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/bind_return_type.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+// Check that the call operators have the proper return type and that they
+// only SFINAE away when too few arguments are provided. Otherwise they should
+// be well formed and should ignore any additional arguments.
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+int dummy = 42;
+
+int return_value(int) { return dummy; }
+int& return_lvalue(int) { return dummy; }
+const int& return_const_lvalue(int) { return dummy; }
+int&& return_rvalue(int) { return std::move(dummy); }
+const int&& return_const_rvalue(int) { return std::move(dummy); }
+
+template <class Bind, class ...Args>
+auto CheckCallImp(int)
+    -> decltype((std::declval<Bind>()(std::declval<Args>()...)), std::true_type{});
+
+template <class Bind, class ...>
+auto CheckCallImp(long) -> std::false_type;
+
+template <class ...Args>
+constexpr bool CheckCall() {
+    return decltype(CheckCallImp<Args...>(0))::value;
+}
+
+template <class Expect, class Fn>
+void do_test(Fn* func) {
+    using namespace std::placeholders;
+    auto ret = std::bind(func, _1);
+    auto ret_r = std::bind<Expect>(func, _1);
+    using Bind = decltype(ret);
+    using BindR = decltype(ret_r);
+
+    using Ret = decltype(ret(42));
+    using Ret2 = decltype(ret(42, 43)); // Test that the extra argument is discarded.
+    using RetR = decltype(ret_r(42));
+    using RetR2 = decltype(ret_r(42, 43));
+
+    static_assert(std::is_same<Ret, Expect>::value, "");
+    static_assert(std::is_same<Ret2, Expect>::value, "");
+    static_assert(std::is_same<RetR, Expect>::value, "");
+    static_assert(std::is_same<RetR2, Expect>::value, "");
+
+    Expect exp = ret(100); // the input value is ignored. dummy is returned.
+    Expect exp2 = ret(101, 102);
+    Expect exp_r = ret_r(100);
+    Expect exp_r2 = ret_r(101, 102);
+
+    assert(exp == 42);
+    assert(exp2 == 42);
+    assert(exp_r == 42);
+    assert(exp_r2 == 42);
+
+    if ((std::is_reference<Expect>::value)) {
+        assert(&exp == &dummy);
+        assert(&exp2 == &dummy);
+        assert(&exp_r == &dummy);
+        assert(&exp_r2 == &dummy);
+    }
+    // Check that the call operator SFINAE's away when too few arguments
+    // are provided but is well-formed otherwise.
+    {
+        LIBCPP_STATIC_ASSERT(!CheckCall<Bind>(), "");
+        static_assert(CheckCall<Bind, int>(), "");
+        static_assert(CheckCall<Bind, int, int>(), "");
+        LIBCPP_STATIC_ASSERT(!CheckCall<BindR>(), "");
+        static_assert(CheckCall<BindR, int>(), "");
+        static_assert(CheckCall<BindR, int, int>(), "");
+    }
+}
+
+
+// Test but with an explicit return type which differs from the real one.
+template <class Expect, class Fn>
+void do_test_r(Fn* func) {
+    using namespace std::placeholders;
+    auto ret = std::bind<Expect>(func, _1);
+    using Bind = decltype(ret);
+    using Ret = decltype(ret(42));
+    using Ret2 = decltype(ret(42, 43)); // Test that the extra argument is discarded.
+    static_assert(std::is_same<Ret, Expect>::value, "");
+    static_assert(std::is_same<Ret2, Expect>::value, "");
+    Expect exp = ret(100); // the input value is ignored
+    Expect exp2 = ret(101, 102);
+    assert(exp == 42);
+    assert(exp2 == 42);
+    // Check that the call operator SFINAE's away when too few arguments
+    // are provided but is well-formed otherwise.
+    {
+        LIBCPP_STATIC_ASSERT(!CheckCall<Bind>(), "");
+        static_assert(CheckCall<Bind, int>(), "");
+        static_assert(CheckCall<Bind, int, int>(), "");
+    }
+}
+
+int main(int, char**)
+{
+    do_test<int>(return_value);
+    do_test<int&>(return_lvalue);
+    do_test<const int&>(return_const_lvalue);
+    do_test<int&&>(return_rvalue);
+    do_test<const int&&>(return_const_rvalue);
+
+    do_test_r<long>(return_value);
+    do_test_r<long>(return_lvalue);
+    do_test_r<long>(return_const_lvalue);
+    do_test_r<long>(return_rvalue);
+    do_test_r<long>(return_const_rvalue);
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/copy.pass.cpp
new file mode 100644
index 0000000..6036f0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/copy.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Address Sanitizer doesn't instrument weak symbols on Linux. When a key
+// function is defined for bad_function_call's vtable, its typeinfo and vtable
+// will be defined as strong symbols in the library and weak symbols in other
+// translation units. Only the strong symbol will be instrumented, increasing
+// its size (due to the redzone) and leading to a serious ODR violation
+// resulting in a crash.
+// Some relevant bugs:
+// https://github.com/google/sanitizers/issues/1017
+// https://github.com/google/sanitizers/issues/619
+// https://github.com/google/sanitizers/issues/398
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016
+// UNSUPPORTED: c++03, asan
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+// https://llvm.org/PR16385
+
+#include <functional>
+#include <cmath>
+#include <cassert>
+
+#include "test_macros.h"
+
+float _pow(float a, float b)
+{
+    return std::pow(a, b);
+}
+
+int main(int, char**)
+{
+    std::function<float(float, float)> fnc = _pow;
+    auto task = std::bind(fnc, 2.f, 4.f);
+    auto task2(task);
+    assert(task() == 16);
+    assert(task2() == 16);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_function_object.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_function_object.pass.cpp
new file mode 100644
index 0000000..d6f620d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_function_object.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+// https://llvm.org/PR22003
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct DummyUnaryFunction
+{
+    template <typename S>
+    int operator()(S const &) const { return 0; }
+};
+
+struct BadUnaryFunction
+{
+    template <typename S>
+    constexpr int operator()(S const &) const
+    {
+        // Trigger a compile error if this function is instantiated.
+        // The constexpr is needed so that it is instantiated while checking
+        // __invoke_of<BadUnaryFunction &, ...>.
+        static_assert(!std::is_same<S, S>::value, "Shit");
+        return 0;
+    }
+};
+
+int main(int, char**)
+{
+    // Check that BadUnaryFunction::operator()(S const &) is not
+    // instantiated when checking if BadUnaryFunction is a nested bind
+    // expression during b(0). See PR22003.
+    auto b = std::bind(DummyUnaryFunction(), BadUnaryFunction());
+    b(0);
+    auto b2 = std::bind<long>(DummyUnaryFunction(), BadUnaryFunction());
+    b2(0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_int_0.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_int_0.pass.cpp
new file mode 100644
index 0000000..4d3f679
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_int_0.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class R, class F>
+void
+test(F f, R expected)
+{
+    assert(f() == expected);
+}
+
+template <class R, class F>
+void
+test_const(const F& f, R expected)
+{
+    assert(f() == expected);
+}
+
+int f() {return 1;}
+
+struct A_int_0
+{
+    int operator()() {return 4;}
+    int operator()() const {return 5;}
+};
+
+int main(int, char**)
+{
+    test(std::bind(f), 1);
+    test(std::bind(&f), 1);
+    test(std::bind(A_int_0()), 4);
+    test_const(std::bind(A_int_0()), 5);
+
+    test(std::bind<int>(f), 1);
+    test(std::bind<int>(&f), 1);
+    test(std::bind<int>(A_int_0()), 4);
+    test_const(std::bind<int>(A_int_0()), 5);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_lvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_lvalue.pass.cpp
new file mode 100644
index 0000000..49547a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_lvalue.pass.cpp
@@ -0,0 +1,293 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+#include <stdio.h>
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int count = 0;
+
+// 1 arg, return void
+
+void f_void_1(int i)
+{
+    count += i;
+}
+
+struct A_void_1
+{
+    void operator()(int i)
+    {
+        count += i;
+    }
+
+    void mem1() {++count;}
+    void mem2() const {count += 2;}
+};
+
+void
+test_void_1()
+{
+    using namespace std::placeholders;
+    int save_count = count;
+    // function
+    {
+    int i = 2;
+    std::bind(f_void_1, _1)(i);
+    assert(count == save_count + 2);
+    save_count = count;
+    }
+    {
+    int i = 2;
+    std::bind(f_void_1, i)();
+    assert(count == save_count + 2);
+    save_count = count;
+    }
+    // function pointer
+    {
+    void (*fp)(int) = f_void_1;
+    int i = 3;
+    std::bind(fp, _1)(i);
+    assert(count == save_count+3);
+    save_count = count;
+    }
+    {
+    void (*fp)(int) = f_void_1;
+    int i = 3;
+    std::bind(fp, i)();
+    assert(count == save_count+3);
+    save_count = count;
+    }
+    // functor
+    {
+    A_void_1 a0;
+    int i = 4;
+    std::bind(a0, _1)(i);
+    assert(count == save_count+4);
+    save_count = count;
+    }
+    {
+    A_void_1 a0;
+    int i = 4;
+    std::bind(a0, i)();
+    assert(count == save_count+4);
+    save_count = count;
+    }
+    // member function pointer
+    {
+    void (A_void_1::*fp)() = &A_void_1::mem1;
+    A_void_1 a;
+    std::bind(fp, _1)(a);
+    assert(count == save_count+1);
+    save_count = count;
+    A_void_1* ap = &a;
+    std::bind(fp, _1)(ap);
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    {
+    void (A_void_1::*fp)() = &A_void_1::mem1;
+    A_void_1 a;
+    std::bind(fp, a)();
+    assert(count == save_count+1);
+    save_count = count;
+    A_void_1* ap = &a;
+    std::bind(fp, ap)();
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    // const member function pointer
+    {
+    void (A_void_1::*fp)() const = &A_void_1::mem2;
+    A_void_1 a;
+    std::bind(fp, _1)(a);
+    assert(count == save_count+2);
+    save_count = count;
+    A_void_1* ap = &a;
+    std::bind(fp, _1)(ap);
+    assert(count == save_count+2);
+    save_count = count;
+    }
+    {
+    void (A_void_1::*fp)() const = &A_void_1::mem2;
+    A_void_1 a;
+    std::bind(fp, a)();
+    assert(count == save_count+2);
+    save_count = count;
+    A_void_1* ap = &a;
+    std::bind(fp, ap)();
+    assert(count == save_count+2);
+    save_count = count;
+    }
+}
+
+// 1 arg, return int
+
+int f_int_1(int i)
+{
+    return i + 1;
+}
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+    int operator()(int i)
+    {
+        return i - 1;
+    }
+
+    int mem1() {return 3;}
+    int mem2() const {return 4;}
+    int data_;
+};
+
+void
+test_int_1()
+{
+    using namespace std::placeholders;
+    // function
+    {
+    int i = 2;
+    assert(std::bind(f_int_1, _1)(i) == 3);
+    assert(std::bind(f_int_1, i)() == 3);
+    }
+    // function pointer
+    {
+    int (*fp)(int) = f_int_1;
+    int i = 3;
+    assert(std::bind(fp, _1)(i) == 4);
+    assert(std::bind(fp, i)() == 4);
+    }
+    // functor
+    {
+    int i = 4;
+    assert(std::bind(A_int_1(), _1)(i) == 3);
+    assert(std::bind(A_int_1(), i)() == 3);
+    }
+    // member function pointer
+    {
+    A_int_1 a;
+    assert(std::bind(&A_int_1::mem1, _1)(a) == 3);
+    assert(std::bind(&A_int_1::mem1, a)() == 3);
+    A_int_1* ap = &a;
+    assert(std::bind(&A_int_1::mem1, _1)(ap) == 3);
+    assert(std::bind(&A_int_1::mem1, ap)() == 3);
+    }
+    // const member function pointer
+    {
+    A_int_1 a;
+    assert(std::bind(&A_int_1::mem2, _1)(A_int_1()) == 4);
+    assert(std::bind(&A_int_1::mem2, A_int_1())() == 4);
+    A_int_1* ap = &a;
+    assert(std::bind(&A_int_1::mem2, _1)(ap) == 4);
+    assert(std::bind(&A_int_1::mem2, ap)() == 4);
+    }
+    // member data pointer
+    {
+    A_int_1 a;
+    assert(std::bind(&A_int_1::data_, _1)(a) == 5);
+    assert(std::bind(&A_int_1::data_, a)() == 5);
+    A_int_1* ap = &a;
+    assert(std::bind(&A_int_1::data_, _1)(a) == 5);
+    std::bind(&A_int_1::data_, _1)(a) = 6;
+    assert(std::bind(&A_int_1::data_, _1)(a) == 6);
+    assert(std::bind(&A_int_1::data_, _1)(ap) == 6);
+    std::bind(&A_int_1::data_, _1)(ap) = 7;
+    assert(std::bind(&A_int_1::data_, _1)(ap) == 7);
+    }
+}
+
+// 2 arg, return void
+
+void f_void_2(int i, int j)
+{
+    count += i+j;
+}
+
+struct A_void_2
+{
+    void operator()(int i, int j)
+    {
+        count += i+j;
+    }
+
+    void mem1(int i) {count += i;}
+    void mem2(int i) const {count += i;}
+};
+
+void
+test_void_2()
+{
+    using namespace std::placeholders;
+    int save_count = count;
+    // function
+    {
+    int i = 2;
+    int j = 3;
+    std::bind(f_void_2, _1, _2)(i, j);
+    assert(count == save_count+5);
+    save_count = count;
+    std::bind(f_void_2, i, _1)(j);
+    assert(count == save_count+5);
+    save_count = count;
+    std::bind(f_void_2, i, j)();
+    assert(count == save_count+5);
+    save_count = count;
+    }
+    // member function pointer
+    {
+    int j = 3;
+    std::bind(&A_void_2::mem1, _1, _2)(A_void_2(), j);
+    assert(count == save_count+3);
+    save_count = count;
+    std::bind(&A_void_2::mem1, _2, _1)(j, A_void_2());
+    assert(count == save_count+3);
+    save_count = count;
+    }
+}
+
+struct TFENode
+{
+    bool foo(unsigned long long) const
+    {
+        return true;
+    }
+};
+
+void
+test3()
+{
+    using namespace std;
+    using namespace std::placeholders;
+    const auto f = bind(&TFENode::foo, _1, 0UL);
+    const TFENode n = TFENode{};
+    bool b = f(n);
+    assert(b);
+}
+
+int main(int, char**)
+{
+    test_void_1();
+    test_int_1();
+    test_void_2();
+    test3();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_rvalue.pass.cpp
new file mode 100644
index 0000000..cd15727
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_rvalue.pass.cpp
@@ -0,0 +1,271 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+#include <stdio.h>
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int count = 0;
+
+// 1 arg, return void
+
+void f_void_1(int i)
+{
+    count += i;
+}
+
+struct A_void_1
+{
+    void operator()(int i)
+    {
+        count += i;
+    }
+
+    void mem1() {++count;}
+    void mem2() const {count += 2;}
+};
+
+void
+test_void_1()
+{
+    using namespace std::placeholders;
+    int save_count = count;
+    // function
+    {
+    std::bind(f_void_1, _1)(2);
+    assert(count == save_count + 2);
+    save_count = count;
+    }
+    {
+    std::bind(f_void_1, 2)();
+    assert(count == save_count + 2);
+    save_count = count;
+    }
+    // function pointer
+    {
+    void (*fp)(int) = f_void_1;
+    std::bind(fp, _1)(3);
+    assert(count == save_count+3);
+    save_count = count;
+    }
+    {
+    void (*fp)(int) = f_void_1;
+    std::bind(fp, 3)();
+    assert(count == save_count+3);
+    save_count = count;
+    }
+    // functor
+    {
+    A_void_1 a0;
+    std::bind(a0, _1)(4);
+    assert(count == save_count+4);
+    save_count = count;
+    }
+    {
+    A_void_1 a0;
+    std::bind(a0, 4)();
+    assert(count == save_count+4);
+    save_count = count;
+    }
+    // member function pointer
+    {
+    void (A_void_1::*fp)() = &A_void_1::mem1;
+    std::bind(fp, _1)(A_void_1());
+    assert(count == save_count+1);
+    save_count = count;
+    A_void_1 a;
+    std::bind(fp, _1)(&a);
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    {
+    void (A_void_1::*fp)() = &A_void_1::mem1;
+    std::bind(fp, A_void_1())();
+    assert(count == save_count+1);
+    save_count = count;
+    A_void_1 a;
+    std::bind(fp, &a)();
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    // const member function pointer
+    {
+    void (A_void_1::*fp)() const = &A_void_1::mem2;
+    std::bind(fp, _1)(A_void_1());
+    assert(count == save_count+2);
+    save_count = count;
+    A_void_1 a;
+    std::bind(fp, _1)(&a);
+    assert(count == save_count+2);
+    save_count = count;
+    }
+    {
+    void (A_void_1::*fp)() const = &A_void_1::mem2;
+    std::bind(fp, A_void_1())();
+    assert(count == save_count+2);
+    save_count = count;
+    A_void_1 a;
+    std::bind(fp, &a)();
+    assert(count == save_count+2);
+    save_count = count;
+    }
+}
+
+// 1 arg, return int
+
+int f_int_1(int i)
+{
+    return i + 1;
+}
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+    int operator()(int i)
+    {
+        return i - 1;
+    }
+
+    int mem1() {return 3;}
+    int mem2() const {return 4;}
+    int data_;
+};
+
+void
+test_int_1()
+{
+    using namespace std::placeholders;
+    // function
+    {
+    assert(std::bind(f_int_1, _1)(2) == 3);
+    assert(std::bind(f_int_1, 2)() == 3);
+    }
+    // function pointer
+    {
+    int (*fp)(int) = f_int_1;
+    assert(std::bind(fp, _1)(3) == 4);
+    assert(std::bind(fp, 3)() == 4);
+    }
+    // functor
+    {
+    assert(std::bind(A_int_1(), _1)(4) == 3);
+    assert(std::bind(A_int_1(), 4)() == 3);
+    }
+    // member function pointer
+    {
+    assert(std::bind(&A_int_1::mem1, _1)(A_int_1()) == 3);
+    assert(std::bind(&A_int_1::mem1, A_int_1())() == 3);
+    A_int_1 a;
+    assert(std::bind(&A_int_1::mem1, _1)(&a) == 3);
+    assert(std::bind(&A_int_1::mem1, &a)() == 3);
+    }
+    // const member function pointer
+    {
+    assert(std::bind(&A_int_1::mem2, _1)(A_int_1()) == 4);
+    assert(std::bind(&A_int_1::mem2, A_int_1())() == 4);
+    A_int_1 a;
+    assert(std::bind(&A_int_1::mem2, _1)(&a) == 4);
+    assert(std::bind(&A_int_1::mem2, &a)() == 4);
+    }
+    // member data pointer
+    {
+    assert(std::bind(&A_int_1::data_, _1)(A_int_1()) == 5);
+    assert(std::bind(&A_int_1::data_, A_int_1())() == 5);
+    A_int_1 a;
+    assert(std::bind(&A_int_1::data_, _1)(a) == 5);
+    std::bind(&A_int_1::data_, _1)(a) = 6;
+    assert(std::bind(&A_int_1::data_, _1)(a) == 6);
+    assert(std::bind(&A_int_1::data_, _1)(&a) == 6);
+    std::bind(&A_int_1::data_, _1)(&a) = 7;
+    assert(std::bind(&A_int_1::data_, _1)(&a) == 7);
+    }
+}
+
+// 2 arg, return void
+
+void f_void_2(int i, int j)
+{
+    count += i+j;
+}
+
+struct A_void_2
+{
+    void operator()(int i, int j)
+    {
+        count += i+j;
+    }
+
+    void mem1(int i) {count += i;}
+    void mem2(int i) const {count += i;}
+};
+
+void
+test_void_2()
+{
+    using namespace std::placeholders;
+    int save_count = count;
+    // function
+    {
+    std::bind(f_void_2, _1, _2)(2, 3);
+    assert(count == save_count+5);
+    save_count = count;
+    std::bind(f_void_2, 2, _1)(3);
+    assert(count == save_count+5);
+    save_count = count;
+    std::bind(f_void_2, 2, 3)();
+    assert(count == save_count+5);
+    save_count = count;
+    }
+    // member function pointer
+    {
+    std::bind(&A_void_2::mem1, _1, _2)(A_void_2(), 3);
+    assert(count == save_count+3);
+    save_count = count;
+    std::bind(&A_void_2::mem1, _2, _1)(3, A_void_2());
+    assert(count == save_count+3);
+    save_count = count;
+    }
+}
+
+int f_nested(int i)
+{
+    return i+1;
+}
+
+int g_nested(int i)
+{
+    return i*10;
+}
+
+void test_nested()
+{
+    using namespace std::placeholders;
+    assert(std::bind(f_nested, std::bind(g_nested, _1))(3) == 31);
+}
+
+int main(int, char**)
+{
+    test_void_1();
+    test_int_1();
+    test_void_2();
+    test_nested();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_void_0.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_void_0.pass.cpp
new file mode 100644
index 0000000..7009c3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/invoke_void_0.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int count = 0;
+
+template <class F>
+void
+test(F f)
+{
+    int save_count = count;
+    f();
+    assert(count == save_count + 1);
+}
+
+template <class F>
+void
+test_const(const F& f)
+{
+    int save_count = count;
+    f();
+    assert(count == save_count + 2);
+}
+
+void f() {++count;}
+
+int g() {++count; return 0;}
+
+struct A_void_0
+{
+    void operator()() {++count;}
+    void operator()() const {count += 2;}
+};
+
+struct A_int_0
+{
+    int operator()() {++count; return 4;}
+    int operator()() const {count += 2; return 5;}
+};
+
+int main(int, char**)
+{
+    test(std::bind(f));
+    test(std::bind(&f));
+    test(std::bind(A_void_0()));
+    test_const(std::bind(A_void_0()));
+
+    test(std::bind<void>(f));
+    test(std::bind<void>(&f));
+    test(std::bind<void>(A_void_0()));
+    test_const(std::bind<void>(A_void_0()));
+
+    test(std::bind<void>(g));
+    test(std::bind<void>(&g));
+    test(std::bind<void>(A_int_0()));
+    test_const(std::bind<void>(A_int_0()));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/nested.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/nested.pass.cpp
new file mode 100644
index 0000000..76e9d84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.bind/nested.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+// template<Returnable R, CopyConstructible Fn, CopyConstructible... Types>
+//   unspecified bind(Fn, Types...);
+
+// https://llvm.org/PR16343
+
+#include <cmath>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct power
+{
+  template <typename T>
+  T
+  operator()(T a, T b)
+  {
+    return static_cast<T>(std::pow(a, b));
+  }
+};
+
+struct plus_one
+{
+  template <typename T>
+  T
+  operator()(T a)
+  {
+    return a + 1;
+  }
+};
+
+int main(int, char**)
+{
+    using std::placeholders::_1;
+
+    auto g = std::bind(power(), 2, _1);
+    assert(g(5) == 32);
+    assert(std::bind(plus_one(), g)(5) == 33);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/is_bind_expression.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/is_bind_expression.pass.cpp
new file mode 100644
index 0000000..f3ef086
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/is_bind_expression.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<class T> struct is_bind_expression
+
+#include <functional>
+#include "test_macros.h"
+
+template <bool Expected, class T>
+void
+test(const T&)
+{
+    static_assert(std::is_bind_expression<T>::value == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_bind_expression<T&>::value == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_bind_expression<const T>::value == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_bind_expression<const T&>::value == Expected, "");
+
+#if TEST_STD_VER > 14
+    static_assert(std::is_bind_expression_v<T> == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_bind_expression_v<T&> == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_bind_expression_v<const T> == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_bind_expression_v<const T&> == Expected, "");
+#endif
+}
+
+struct C {int operator()(...) const { return 0; }};
+
+int main(int, char**)
+{
+    test<true>(std::bind(C()));
+    test<true>(std::bind(C(), std::placeholders::_2));
+    test<true>(std::bind<int>(C()));
+    test<false>(1);
+    test<false>(std::placeholders::_2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/is_bind_expression_03.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/is_bind_expression_03.pass.cpp
new file mode 100644
index 0000000..3fe1be7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/is_bind_expression_03.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+//-----------------------------------------------------------------------------
+// TESTING template<class T> struct is_bind_expression
+//
+// bind is not implemented in C++03 so nothing is a bind expression. However
+// for compatibility reasons the trait is_bind_expression should be available
+// in C++03 and it should always return false.
+
+#include <functional>
+
+#include "test_macros.h"
+
+template <class T>
+void test() {
+    static_assert(!std::is_bind_expression<T>::value, "");
+}
+
+struct C {};
+
+int main(int, char**) {
+    test<int>();
+    test<void>();
+    test<C>();
+    test<C&>();
+    test<C const&>();
+    test<C*>();
+    test<void()>();
+    test<int(*)()>();
+    test<int (C::*)()>();
+    test<decltype(std::placeholders::_2)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/specialization.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/specialization.pass.cpp
new file mode 100644
index 0000000..32279ac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isbind/specialization.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <functional>
+
+// template<class T> struct is_bind_expression;
+//   A program may specialize this template for a program-defined type T
+//   to have a base characteristic of true_type to indicate that T should
+//   be treated as a subexpression in a bind call.
+//   https://llvm.org/PR51753
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+struct MyBind {
+    int operator()(int x, int y) const { return 10*x + y; }
+};
+template<> struct std::is_bind_expression<MyBind> : std::true_type {};
+
+int main(int, char**)
+{
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    MyBind bindexpr;
+    auto bound = std::bind(f, bindexpr);
+    assert(bound(7, 8) == 789);
+  }
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    const MyBind bindexpr;
+    auto bound = std::bind(f, bindexpr);
+    assert(bound(7, 8) == 789);
+  }
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    MyBind bindexpr;
+    auto bound = std::bind(f, std::move(bindexpr));
+    assert(bound(7, 8) == 789);
+  }
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    const MyBind bindexpr;
+    auto bound = std::bind(f, std::move(bindexpr));
+    assert(bound(7, 8) == 789);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isplace/is_placeholder.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isplace/is_placeholder.pass.cpp
new file mode 100644
index 0000000..c020ea4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isplace/is_placeholder.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// struct is_placeholder
+
+#include <functional>
+#include "test_macros.h"
+
+template <int Expected, class T>
+void
+test(const T&)
+{
+    static_assert(std::is_placeholder<T>::value == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_placeholder<T&>::value == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_placeholder<const T>::value == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_placeholder<const T&>::value == Expected, "");
+
+#if TEST_STD_VER > 14
+    static_assert(std::is_placeholder_v<T> == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_placeholder_v<T&> == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_placeholder_v<const T> == Expected, "");
+    LIBCPP_STATIC_ASSERT(std::is_placeholder_v<const T&> == Expected, "");
+#endif
+}
+
+struct C {};
+
+int main(int, char**)
+{
+    test<1>(std::placeholders::_1);
+    test<2>(std::placeholders::_2);
+    test<3>(std::placeholders::_3);
+    test<4>(std::placeholders::_4);
+    test<5>(std::placeholders::_5);
+    test<6>(std::placeholders::_6);
+    test<7>(std::placeholders::_7);
+    test<8>(std::placeholders::_8);
+    test<9>(std::placeholders::_9);
+    test<10>(std::placeholders::_10);
+    test<0>(4);
+    test<0>(5.5);
+    test<0>('a');
+    test<0>(C());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isplace/specialization.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isplace/specialization.pass.cpp
new file mode 100644
index 0000000..0e0437b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.isplace/specialization.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <functional>
+
+// template<class T> struct is_placeholder;
+//   A program may specialize this template for a program-defined type T
+//   to have a base characteristic of integral_constant<int, N> with N > 0
+//   to indicate that T should be treated as a placeholder type.
+//   https://llvm.org/PR51753
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+struct My2 {};
+template<> struct std::is_placeholder<My2> : std::integral_constant<int, 2> {};
+
+int main(int, char**)
+{
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    My2 place;
+    auto bound = std::bind(f, place);
+    assert(bound(7, 8) == 89);
+  }
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    const My2 place;
+    auto bound = std::bind(f, place);
+    assert(bound(7, 8) == 89);
+  }
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    My2 place;
+    auto bound = std::bind(f, std::move(place));
+    assert(bound(7, 8) == 89);
+  }
+  {
+    auto f = [](auto x) { return 10*x + 9; };
+    const My2 place;
+    auto bound = std::bind(f, std::move(place));
+    assert(bound(7, 8) == 89);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.place/placeholders.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.place/placeholders.pass.cpp
new file mode 100644
index 0000000..b71aae8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bind/func.bind/func.bind.place/placeholders.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// placeholders
+// The placeholders are constexpr in C++17 and beyond.
+// libc++ provides constexpr placeholders in C++11 and beyond.
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test(const T& t)
+{
+    // Test default constructible.
+    T t2;
+    ((void)t2);
+    // Test copy constructible.
+    T t3 = t;
+    ((void)t3);
+    static_assert(std::is_nothrow_copy_constructible<T>::value, "");
+    static_assert(std::is_nothrow_move_constructible<T>::value, "");
+}
+
+#if TEST_STD_VER >= 11
+constexpr decltype(std::placeholders::_1)  default1{};
+constexpr decltype(std::placeholders::_2)  default2{};
+constexpr decltype(std::placeholders::_3)  default3{};
+constexpr decltype(std::placeholders::_4)  default4{};
+constexpr decltype(std::placeholders::_5)  default5{};
+constexpr decltype(std::placeholders::_6)  default6{};
+constexpr decltype(std::placeholders::_7)  default7{};
+constexpr decltype(std::placeholders::_8)  default8{};
+constexpr decltype(std::placeholders::_9)  default9{};
+constexpr decltype(std::placeholders::_10) default10{};
+
+constexpr decltype(std::placeholders::_1)  cp1 = std::placeholders::_1;
+constexpr decltype(std::placeholders::_2)  cp2 = std::placeholders::_2;
+constexpr decltype(std::placeholders::_3)  cp3 = std::placeholders::_3;
+constexpr decltype(std::placeholders::_4)  cp4 = std::placeholders::_4;
+constexpr decltype(std::placeholders::_5)  cp5 = std::placeholders::_5;
+constexpr decltype(std::placeholders::_6)  cp6 = std::placeholders::_6;
+constexpr decltype(std::placeholders::_7)  cp7 = std::placeholders::_7;
+constexpr decltype(std::placeholders::_8)  cp8 = std::placeholders::_8;
+constexpr decltype(std::placeholders::_9)  cp9 = std::placeholders::_9;
+constexpr decltype(std::placeholders::_10) cp10 = std::placeholders::_10;
+#endif // TEST_STD_VER >= 11
+
+void use_placeholders_to_prevent_unused_warning() {
+#if TEST_STD_VER >= 11
+  ((void)cp1);
+  ((void)cp2);
+  ((void)cp3);
+  ((void)cp4);
+  ((void)cp5);
+  ((void)cp6);
+  ((void)cp7);
+  ((void)cp8);
+  ((void)cp9);
+  ((void)cp10);
+  ((void)default1);
+  ((void)default2);
+  ((void)default3);
+  ((void)default4);
+  ((void)default5);
+  ((void)default6);
+  ((void)default7);
+  ((void)default8);
+  ((void)default9);
+  ((void)default10);
+#endif
+}
+
+int main(int, char**)
+{
+    use_placeholders_to_prevent_unused_warning();
+    test(std::placeholders::_1);
+    test(std::placeholders::_2);
+    test(std::placeholders::_3);
+    test(std::placeholders::_4);
+    test(std::placeholders::_5);
+    test(std::placeholders::_6);
+    test(std::placeholders::_7);
+    test(std::placeholders::_8);
+    test(std::placeholders::_9);
+    test(std::placeholders::_10);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp
new file mode 100644
index 0000000..621479b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// bit_and
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::bit_and<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(0xEA95, 0xEA95) == 0xEA95);
+    assert(f(0xEA95, 0x58D3) == 0x4891);
+    assert(f(0x58D3, 0xEA95) == 0x4891);
+    assert(f(0x58D3, 0) == 0);
+    assert(f(0xFFFF, 0x58D3) == 0x58D3);
+#if TEST_STD_VER > 11
+    typedef std::bit_and<> F2;
+    const F2 f2 = F2();
+    assert(f2(0xEA95, 0xEA95) == 0xEA95);
+    assert(f2(0xEA95L, 0xEA95) == 0xEA95);
+    assert(f2(0xEA95, 0xEA95L) == 0xEA95);
+
+    assert(f2(0xEA95, 0x58D3) == 0x4891);
+    assert(f2(0xEA95L, 0x58D3) == 0x4891);
+    assert(f2(0xEA95, 0x58D3L) == 0x4891);
+
+    assert(f2(0x58D3, 0xEA95) == 0x4891);
+    assert(f2(0x58D3L, 0xEA95) == 0x4891);
+    assert(f2(0x58D3, 0xEA95L) == 0x4891);
+
+    assert(f2(0x58D3, 0) == 0);
+    assert(f2(0x58D3L, 0) == 0);
+    assert(f2(0x58D3, 0L) == 0);
+
+    assert(f2(0xFFFF, 0x58D3) == 0x58D3);
+    assert(f2(0xFFFFL, 0x58D3) == 0x58D3);
+    assert(f2(0xFFFF, 0x58D3L) == 0x58D3);
+
+    constexpr int foo = std::bit_and<int> () (0x58D3, 0xEA95);
+    static_assert ( foo == 0x4891, "" );
+
+    constexpr int bar = std::bit_and<> () (0x58D3L, 0xEA95);
+    static_assert ( bar == 0x4891, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_not.pass.cpp
new file mode 100644
index 0000000..4a6acdd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_not.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// bit_not
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::bit_not<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<F::argument_type, int>::value), "" );
+    static_assert((std::is_same<F::result_type, int>::value), "" );
+#endif
+    assert((f(0xEA95) & 0xFFFF ) == 0x156A);
+    assert((f(0x58D3) & 0xFFFF ) == 0xA72C);
+    assert((f(0)      & 0xFFFF ) == 0xFFFF);
+    assert((f(0xFFFF) & 0xFFFF ) == 0);
+
+    typedef std::bit_not<> F2;
+    const F2 f2 = F2();
+    assert((f2(0xEA95)  & 0xFFFF ) == 0x156A);
+    assert((f2(0xEA95L) & 0xFFFF ) == 0x156A);
+    assert((f2(0x58D3)  & 0xFFFF ) == 0xA72C);
+    assert((f2(0x58D3L) & 0xFFFF ) == 0xA72C);
+    assert((f2(0)       & 0xFFFF ) == 0xFFFF);
+    assert((f2(0L)      & 0xFFFF ) == 0xFFFF);
+    assert((f2(0xFFFF)  & 0xFFFF ) == 0);
+    assert((f2(0xFFFFL)  & 0xFFFF ) == 0);
+
+    constexpr int foo = std::bit_not<int> () (0xEA95) & 0xFFFF;
+    static_assert ( foo == 0x156A, "" );
+
+    constexpr int bar = std::bit_not<> () (0xEA95) & 0xFFFF;
+    static_assert ( bar == 0x156A, "" );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp
new file mode 100644
index 0000000..442363d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// bit_or
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::bit_or<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(0xEA95, 0xEA95) == 0xEA95);
+    assert(f(0xEA95, 0x58D3) == 0xFAD7);
+    assert(f(0x58D3, 0xEA95) == 0xFAD7);
+    assert(f(0x58D3, 0) == 0x58D3);
+    assert(f(0xFFFF, 0x58D3) == 0xFFFF);
+#if TEST_STD_VER > 11
+    typedef std::bit_or<> F2;
+    const F2 f2 = F2();
+    assert(f2(0xEA95, 0xEA95) == 0xEA95);
+    assert(f2(0xEA95L, 0xEA95) == 0xEA95);
+    assert(f2(0xEA95, 0xEA95L) == 0xEA95);
+
+    assert(f2(0xEA95, 0x58D3) == 0xFAD7);
+    assert(f2(0xEA95L, 0x58D3) == 0xFAD7);
+    assert(f2(0xEA95, 0x58D3L) == 0xFAD7);
+
+    assert(f2(0x58D3, 0xEA95) == 0xFAD7);
+    assert(f2(0x58D3L, 0xEA95) == 0xFAD7);
+    assert(f2(0x58D3, 0xEA95L) == 0xFAD7);
+
+    assert(f2(0x58D3, 0) == 0x58D3);
+    assert(f2(0x58D3L, 0) == 0x58D3);
+    assert(f2(0x58D3, 0L) == 0x58D3);
+
+    assert(f2(0xFFFF, 0x58D3) == 0xFFFF);
+    assert(f2(0xFFFFL, 0x58D3) == 0xFFFF);
+    assert(f2(0xFFFF, 0x58D3L) == 0xFFFF);
+
+    constexpr int foo = std::bit_or<int> () (0x58D3, 0xEA95);
+    static_assert ( foo == 0xFAD7, "" );
+
+    constexpr int bar = std::bit_or<> () (0x58D3L, 0xEA95);
+    static_assert ( bar == 0xFAD7, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp
new file mode 100644
index 0000000..eff1bea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// bit_xor
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::bit_xor<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
+#endif
+    assert(f(0xEA95, 0xEA95) == 0);
+    assert(f(0xEA95, 0x58D3) == 0xB246);
+    assert(f(0x58D3, 0xEA95) == 0xB246);
+    assert(f(0x58D3, 0) == 0x58D3);
+    assert(f(0xFFFF, 0x58D3) == 0xA72C);
+    }
+#if TEST_STD_VER > 11
+    {
+    typedef std::bit_xor<> F2;
+    const F2 f = F2();
+    assert(f(0xEA95, 0xEA95) == 0);
+    assert(f(0xEA95L, 0xEA95) == 0);
+    assert(f(0xEA95, 0xEA95L) == 0);
+
+    assert(f(0xEA95, 0x58D3) == 0xB246);
+    assert(f(0xEA95L, 0x58D3) == 0xB246);
+    assert(f(0xEA95, 0x58D3L) == 0xB246);
+
+    assert(f(0x58D3, 0xEA95) == 0xB246);
+    assert(f(0x58D3L, 0xEA95) == 0xB246);
+    assert(f(0x58D3, 0xEA95L) == 0xB246);
+
+    assert(f(0x58D3, 0) == 0x58D3);
+    assert(f(0x58D3L, 0) == 0x58D3);
+    assert(f(0x58D3, 0L) == 0x58D3);
+
+    assert(f(0xFFFF, 0x58D3) == 0xA72C);
+    assert(f(0xFFFFL, 0x58D3) == 0xA72C);
+    assert(f(0xFFFF, 0x58D3L) == 0xA72C);
+
+    constexpr int foo = std::bit_xor<int> () (0x58D3, 0xEA95);
+    static_assert ( foo == 0xB246, "" );
+
+    constexpr int bar = std::bit_xor<> () (0x58D3L, 0xEA95);
+    static_assert ( bar == 0xB246, "" );
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp
new file mode 100644
index 0000000..e70956a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/bitwise.operations/transparent.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <functional>
+#include <string>
+
+#include "test_macros.h"
+
+template <class T>
+struct is_transparent
+{
+private:
+    struct two {char lx; char lxx;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::is_transparent* = 0);
+public:
+    static const bool value = sizeof(test<T>(0)) == 1;
+};
+
+
+int main(int, char**) {
+    static_assert ( !is_transparent<std::bit_and<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_and<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_and<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_and<>>::value, "" );
+
+    static_assert ( !is_transparent<std::bit_or<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_or<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_or<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_or<>>::value, "" );
+
+    static_assert ( !is_transparent<std::bit_xor<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_xor<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_xor<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_xor<>>::value, "" );
+
+    static_assert ( !is_transparent<std::bit_not<int>>::value, "" );
+    static_assert ( !is_transparent<std::bit_not<std::string>>::value, "" );
+    static_assert (  is_transparent<std::bit_not<void>>::value, "" );
+    static_assert (  is_transparent<std::bit_not<>>::value, "" );
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/compare_three_way.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/compare_three_way.pass.cpp
new file mode 100644
index 0000000..3a80315
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/compare_three_way.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <compare>
+// <functional>
+
+// compare_three_way
+
+#include <compare>
+#include <cassert>
+#include <limits>
+#include <type_traits>
+
+#include "pointer_comparison_test_helper.h"
+
+template<class T, class U>
+constexpr auto test_sfinae(T t, U u)
+    -> decltype(std::compare_three_way()(t, u), std::true_type{})
+    { return std::true_type{}; }
+
+constexpr auto test_sfinae(...)
+    { return std::false_type{}; }
+
+struct NotThreeWayComparable {
+    std::strong_ordering operator<=>(const NotThreeWayComparable&) const;
+};
+ASSERT_SAME_TYPE(std::compare_three_way_result_t<NotThreeWayComparable>, std::strong_ordering);
+static_assert(!std::three_way_comparable<NotThreeWayComparable>);  // it lacks operator==
+
+struct WeaklyOrdered {
+    int i;
+    friend constexpr std::weak_ordering operator<=>(const WeaklyOrdered&, const WeaklyOrdered&) = default;
+};
+
+constexpr bool test()
+{
+    ASSERT_SAME_TYPE(decltype(std::compare_three_way()(1, 1)), std::strong_ordering);
+    assert(std::compare_three_way()(1, 2) == std::strong_ordering::less);
+    assert(std::compare_three_way()(1, 1) == std::strong_ordering::equal);
+    assert(std::compare_three_way()(2, 1) == std::strong_ordering::greater);
+
+    ASSERT_SAME_TYPE(decltype(std::compare_three_way()(WeaklyOrdered{1}, WeaklyOrdered{2})), std::weak_ordering);
+    assert(std::compare_three_way()(WeaklyOrdered{1}, WeaklyOrdered{2}) == std::weak_ordering::less);
+    assert(std::compare_three_way()(WeaklyOrdered{1}, WeaklyOrdered{1}) == std::weak_ordering::equivalent);
+    assert(std::compare_three_way()(WeaklyOrdered{2}, WeaklyOrdered{1}) == std::weak_ordering::greater);
+
+    ASSERT_SAME_TYPE(decltype(std::compare_three_way()(1.0, 1.0)), std::partial_ordering);
+    double nan = std::numeric_limits<double>::quiet_NaN();
+    assert(std::compare_three_way()(1.0, 2.0) == std::partial_ordering::less);
+    assert(std::compare_three_way()(1.0, 1.0) == std::partial_ordering::equivalent);
+    assert(std::compare_three_way()(2.0, 1.0) == std::partial_ordering::greater);
+    assert(std::compare_three_way()(nan, nan) == std::partial_ordering::unordered);
+
+    // Try heterogeneous comparison.
+    ASSERT_SAME_TYPE(decltype(std::compare_three_way()(42.0, 42)), std::partial_ordering);
+    assert(std::compare_three_way()(42.0, 42) == std::partial_ordering::equivalent);
+    ASSERT_SAME_TYPE(decltype(std::compare_three_way()(42, 42.0)), std::partial_ordering);
+    assert(std::compare_three_way()(42, 42.0) == std::partial_ordering::equivalent);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+
+    do_pointer_comparison_test(std::compare_three_way());
+
+    static_assert(test_sfinae(1, 2));
+    static_assert(!test_sfinae(1, nullptr));
+    static_assert(!test_sfinae(NotThreeWayComparable(), NotThreeWayComparable()));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/compare_three_way_functional.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/compare_three_way_functional.pass.cpp
new file mode 100644
index 0000000..361cf12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/compare_three_way_functional.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// Test that std::compare_three_way is defined in <functional>,
+// not only in <compare>.
+
+#include <functional>
+#include <cassert>
+
+int main(int, char**)
+{
+    assert(std::compare_three_way()(1, 2) < 0);
+    assert(std::compare_three_way()(1, 1) == 0);
+    assert(std::compare_three_way()(2, 1) > 0);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/constexpr_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/constexpr_init.pass.cpp
new file mode 100644
index 0000000..279aa9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/constexpr_init.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <functional>
+
+// equal_to, not_equal_to, less, et al.
+
+// Test that these types can be constructed w/o an initializer in a constexpr
+// context. This is specifically testing gcc.gnu.org/PR83921
+
+
+#include <functional>
+#include "test_macros.h"
+
+template <class T>
+constexpr bool test_constexpr_context() {
+  std::equal_to<T> eq;
+  ((void)eq);
+  std::not_equal_to<T> neq;
+  ((void)neq);
+  std::less<T> l;
+  ((void)l);
+  std::less_equal<T> le;
+  ((void)le);
+  std::greater<T> g;
+  ((void)g);
+  std::greater_equal<T> ge;
+  ((void)ge);
+  return true;
+}
+
+static_assert(test_constexpr_context<int>(), "");
+static_assert(test_constexpr_context<void>(), "");
+
+
+int main(int, char**) {
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp
new file mode 100644
index 0000000..0a10209
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// equal_to
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::equal_to<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(f(36, 36));
+    assert(!f(36, 6));
+#if TEST_STD_VER > 11
+    typedef std::equal_to<> F2;
+    const F2 f2 = F2();
+    assert(f2(36, 36));
+    assert(!f2(36, 6));
+    assert(f2(36, 36.0));
+    assert(f2(36.0, 36L));
+
+    constexpr bool foo = std::equal_to<int> () (36, 36);
+    static_assert ( foo, "" );
+
+    constexpr bool bar = std::equal_to<> () (36.0, 36);
+    static_assert ( bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/greater.pass.cpp
new file mode 100644
index 0000000..660c4d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/greater.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// greater
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "pointer_comparison_test_helper.h"
+
+int main(int, char**)
+{
+    typedef std::greater<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(!f(36, 36));
+    assert(f(36, 6));
+    assert(!f(6, 36));
+    {
+        // test total ordering of int* for greater<int*> and
+        // greater<void>.
+        do_pointer_comparison_test<std::greater>();
+    }
+#if TEST_STD_VER > 11
+    typedef std::greater<> F2;
+    const F2 f2 = F2();
+    assert(!f2(36, 36));
+    assert(f2(36, 6));
+    assert(!f2(6, 36));
+    assert( f2(36, 6.0));
+    assert( f2(36.0, 6));
+    assert(!f2(6, 36.0));
+    assert(!f2(6.0, 36));
+
+    constexpr bool foo = std::greater<int> () (36, 36);
+    static_assert ( !foo, "" );
+
+    constexpr bool bar = std::greater<> () (36.0, 36);
+    static_assert ( !bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp
new file mode 100644
index 0000000..5977615
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// greater_equal
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "pointer_comparison_test_helper.h"
+
+int main(int, char**)
+{
+    typedef std::greater_equal<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(f(36, 36));
+    assert(f(36, 6));
+    assert(!f(6, 36));
+    {
+        // test total ordering of int* for greater_equal<int*> and
+        // greater_equal<void>.
+        do_pointer_comparison_test<std::greater_equal>();
+    }
+#if TEST_STD_VER > 11
+    typedef std::greater_equal<> F2;
+    const F2 f2 = F2();
+    assert(f2(36, 36));
+    assert(f2(36, 6));
+    assert(!f2(6, 36));
+    assert( f2(36, 6.0));
+    assert( f2(36.0, 6));
+    assert(!f2(6, 36.0));
+    assert(!f2(6.0, 36));
+
+    constexpr bool foo = std::greater_equal<int> () (36, 36);
+    static_assert ( foo, "" );
+
+    constexpr bool bar = std::greater_equal<> () (36.0, 36);
+    static_assert ( bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/less.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/less.pass.cpp
new file mode 100644
index 0000000..976f6e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/less.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// less
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "pointer_comparison_test_helper.h"
+
+int main(int, char**)
+{
+    typedef std::less<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(!f(36, 36));
+    assert(!f(36, 6));
+    assert(f(6, 36));
+    {
+        // test total ordering of int* for less<int*> and less<void>.
+        do_pointer_comparison_test<std::less>();
+    }
+#if TEST_STD_VER > 11
+    typedef std::less<> F2;
+    const F2 f2 = F2();
+    assert(!f2(36, 36));
+    assert(!f2(36, 6));
+    assert( f2(6, 36));
+    assert(!f2(36, 6.0));
+    assert(!f2(36.0, 6));
+    assert( f2(6, 36.0));
+    assert( f2(6.0, 36));
+
+    constexpr bool foo = std::less<int> () (36, 36);
+    static_assert ( !foo, "" );
+
+    constexpr bool bar = std::less<> () (36.0, 36);
+    static_assert ( !bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp
new file mode 100644
index 0000000..fa38fe4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// less_equal
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "pointer_comparison_test_helper.h"
+
+int main(int, char**)
+{
+    typedef std::less_equal<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(f(36, 36));
+    assert(!f(36, 6));
+    assert(f(6, 36));
+    {
+        // test total ordering of int* for less_equal<int*> and
+        // less_equal<void>.
+        do_pointer_comparison_test<std::less_equal>();
+    }
+#if TEST_STD_VER > 11
+    typedef std::less_equal<> F2;
+    const F2 f2 = F2();
+    assert( f2(36, 36));
+    assert(!f2(36, 6));
+    assert( f2(6, 36));
+    assert(!f2(36, 6.0));
+    assert(!f2(36.0, 6));
+    assert( f2(6, 36.0));
+    assert( f2(6.0, 36));
+
+    constexpr bool foo = std::less_equal<int> () (36, 36);
+    static_assert ( foo, "" );
+
+    constexpr bool bar = std::less_equal<> () (36.0, 36);
+    static_assert ( bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp
new file mode 100644
index 0000000..1d4a03c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// not_equal_to
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::not_equal_to<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(!f(36, 36));
+    assert(f(36, 6));
+#if TEST_STD_VER > 11
+    typedef std::not_equal_to<> F2;
+    const F2 f2 = F2();
+    assert(!f2(36, 36));
+    assert( f2(36, 6));
+    assert( f2(36, 6.0));
+    assert( f2(36.0, 6));
+    assert(!f2(36.0, 36));
+    assert(!f2(36, 36.0));
+
+    constexpr bool foo = std::not_equal_to<int> () (36, 36);
+    static_assert ( !foo, "" );
+
+    constexpr bool bar = std::not_equal_to<> () (36.0, 36);
+    static_assert ( !bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp
new file mode 100644
index 0000000..14d5b30
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/transparent.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <functional>
+#include <string>
+
+#include "test_macros.h"
+
+template <class T>
+struct is_transparent
+{
+private:
+    struct two {char lx; char lxx;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::is_transparent* = 0);
+public:
+    static const bool value = sizeof(test<T>(0)) == 1;
+};
+
+
+int main(int, char**)
+{
+    static_assert ( !is_transparent<std::less<int>>::value, "" );
+    static_assert ( !is_transparent<std::less<std::string>>::value, "" );
+    static_assert (  is_transparent<std::less<void>>::value, "" );
+    static_assert (  is_transparent<std::less<>>::value, "" );
+
+    static_assert ( !is_transparent<std::less_equal<int>>::value, "" );
+    static_assert ( !is_transparent<std::less_equal<std::string>>::value, "" );
+    static_assert (  is_transparent<std::less_equal<void>>::value, "" );
+    static_assert (  is_transparent<std::less_equal<>>::value, "" );
+
+    static_assert ( !is_transparent<std::equal_to<int>>::value, "" );
+    static_assert ( !is_transparent<std::equal_to<std::string>>::value, "" );
+    static_assert (  is_transparent<std::equal_to<void>>::value, "" );
+    static_assert (  is_transparent<std::equal_to<>>::value, "" );
+
+    static_assert ( !is_transparent<std::not_equal_to<int>>::value, "" );
+    static_assert ( !is_transparent<std::not_equal_to<std::string>>::value, "" );
+    static_assert (  is_transparent<std::not_equal_to<void>>::value, "" );
+    static_assert (  is_transparent<std::not_equal_to<>>::value, "" );
+
+    static_assert ( !is_transparent<std::greater<int>>::value, "" );
+    static_assert ( !is_transparent<std::greater<std::string>>::value, "" );
+    static_assert (  is_transparent<std::greater<void>>::value, "" );
+    static_assert (  is_transparent<std::greater<>>::value, "" );
+
+    static_assert ( !is_transparent<std::greater_equal<int>>::value, "" );
+    static_assert ( !is_transparent<std::greater_equal<std::string>>::value, "" );
+    static_assert (  is_transparent<std::greater_equal<void>>::value, "" );
+    static_assert (  is_transparent<std::greater_equal<>>::value, "" );
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/transparent_three_way.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/transparent_three_way.compile.pass.cpp
new file mode 100644
index 0000000..88fad56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/comparisons/transparent_three_way.compile.pass.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <functional>
+
+template<class T>
+concept Transparent = requires {
+    typename T::is_transparent;
+};
+
+static_assert(Transparent<std::compare_three_way>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.bind_front/bind_front.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.bind_front/bind_front.pass.cpp
new file mode 100644
index 0000000..6eb4e4a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.bind_front/bind_front.pass.cpp
@@ -0,0 +1,413 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// functional
+
+// template <class F, class... Args>
+// constexpr unspecified bind_front(F&&, Args&&...);
+
+#include <functional>
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "callable_types.h"
+#include "test_macros.h"
+
+struct CopyMoveInfo {
+  enum { none, copy, move } copy_kind;
+
+  constexpr CopyMoveInfo() : copy_kind(none) {}
+  constexpr CopyMoveInfo(CopyMoveInfo const&) : copy_kind(copy) {}
+  constexpr CopyMoveInfo(CopyMoveInfo&&) : copy_kind(move) {}
+};
+
+template <class ...Args>
+struct is_bind_frontable {
+  template <class ...LocalArgs>
+  static auto test(int)
+      -> decltype((void)std::bind_front(std::declval<LocalArgs>()...), std::true_type());
+
+  template <class...>
+  static std::false_type test(...);
+
+  static constexpr bool value = decltype(test<Args...>(0))::value;
+};
+
+struct NotCopyMove {
+  NotCopyMove() = delete;
+  NotCopyMove(const NotCopyMove&) = delete;
+  NotCopyMove(NotCopyMove&&) = delete;
+  template <class ...Args>
+  void operator()(Args&& ...) const { }
+};
+
+struct NonConstCopyConstructible {
+  explicit NonConstCopyConstructible() {}
+  NonConstCopyConstructible(NonConstCopyConstructible&) {}
+};
+
+struct MoveConstructible {
+  explicit MoveConstructible() {}
+  MoveConstructible(MoveConstructible&&) {}
+};
+
+struct MakeTuple {
+  template <class ...Args>
+  constexpr auto operator()(Args&& ...args) const {
+    return std::make_tuple(std::forward<Args>(args)...);
+  }
+};
+
+template <int X>
+struct Elem {
+  template <int Y>
+  constexpr bool operator==(Elem<Y> const&) const
+  { return X == Y; }
+};
+
+constexpr bool test() {
+  // Bind arguments, call without arguments
+  {
+    {
+      auto f = std::bind_front(MakeTuple{});
+      assert(f() == std::make_tuple());
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{});
+      assert(f() == std::make_tuple(Elem<1>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{}, Elem<2>{});
+      assert(f() == std::make_tuple(Elem<1>{}, Elem<2>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{}, Elem<2>{}, Elem<3>{});
+      assert(f() == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<3>{}));
+    }
+  }
+
+  // Bind no arguments, call with arguments
+  {
+    {
+      auto f = std::bind_front(MakeTuple{});
+      assert(f(Elem<1>{}) == std::make_tuple(Elem<1>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{});
+      assert(f(Elem<1>{}, Elem<2>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{});
+      assert(f(Elem<1>{}, Elem<2>{}, Elem<3>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<3>{}));
+    }
+  }
+
+  // Bind arguments, call with arguments
+  {
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{});
+      assert(f(Elem<10>{}) == std::make_tuple(Elem<1>{}, Elem<10>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{}, Elem<2>{});
+      assert(f(Elem<10>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<10>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{}, Elem<2>{}, Elem<3>{});
+      assert(f(Elem<10>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<3>{}, Elem<10>{}));
+    }
+
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{});
+      assert(f(Elem<10>{}, Elem<11>{}) == std::make_tuple(Elem<1>{}, Elem<10>{}, Elem<11>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{}, Elem<2>{});
+      assert(f(Elem<10>{}, Elem<11>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<10>{}, Elem<11>{}));
+    }
+    {
+      auto f = std::bind_front(MakeTuple{}, Elem<1>{}, Elem<2>{}, Elem<3>{});
+      assert(f(Elem<10>{}, Elem<11>{}) == std::make_tuple(Elem<1>{}, Elem<2>{}, Elem<3>{}, Elem<10>{}, Elem<11>{}));
+    }
+  }
+
+  // Basic tests with fundamental types
+  {
+    int n = 2;
+    int m = 1;
+    auto add = [](int x, int y) { return x + y; };
+    auto addN = [](int a, int b, int c, int d, int e, int f) {
+      return a + b + c + d + e + f;
+    };
+
+    auto a = std::bind_front(add, m, n);
+    assert(a() == 3);
+
+    auto b = std::bind_front(addN, m, n, m, m, m, m);
+    assert(b() == 7);
+
+    auto c = std::bind_front(addN, n, m);
+    assert(c(1, 1, 1, 1) == 7);
+
+    auto f = std::bind_front(add, n);
+    assert(f(3) == 5);
+
+    auto g = std::bind_front(add, n, 1);
+    assert(g() == 3);
+
+    auto h = std::bind_front(addN, 1, 1, 1);
+    assert(h(2, 2, 2) == 9);
+  }
+
+  // Make sure we don't treat std::reference_wrapper specially.
+  {
+    auto add = [](std::reference_wrapper<int> a, std::reference_wrapper<int> b) {
+      return a.get() + b.get();
+    };
+    int i = 1, j = 2;
+    auto f = std::bind_front(add, std::ref(i));
+    assert(f(std::ref(j)) == 3);
+  }
+
+  // Make sure we can call a function that's a pointer to a member function.
+  {
+    struct MemberFunction {
+      constexpr bool foo(int, int) { return true; }
+    };
+    MemberFunction value;
+    auto fn = std::bind_front(&MemberFunction::foo, value, 0);
+    assert(fn(0));
+  }
+
+  // Make sure that we copy the bound arguments into the unspecified-type.
+  {
+    auto add = [](int x, int y) { return x + y; };
+    int n = 2;
+    auto i = std::bind_front(add, n, 1);
+    n = 100;
+    assert(i() == 3);
+  }
+
+  // Make sure we pass the bound arguments to the function object
+  // with the right value category.
+  {
+    {
+      auto wasCopied = [](CopyMoveInfo info) {
+        return info.copy_kind == CopyMoveInfo::copy;
+      };
+      CopyMoveInfo info;
+      auto copied = std::bind_front(wasCopied, info);
+      assert(copied());
+    }
+
+    {
+      auto wasMoved = [](CopyMoveInfo info) {
+        return info.copy_kind == CopyMoveInfo::move;
+      };
+      CopyMoveInfo info;
+      auto moved = std::bind_front(wasMoved, info);
+      assert(std::move(moved)());
+    }
+  }
+
+  // Make sure we call the correctly cv-ref qualified operator() based on the
+  // value category of the bind_front unspecified-type.
+  {
+    struct F {
+      constexpr int operator()() & { return 1; }
+      constexpr int operator()() const& { return 2; }
+      constexpr int operator()() && { return 3; }
+      constexpr int operator()() const&& { return 4; }
+    };
+    auto x = std::bind_front(F{});
+    using X = decltype(x);
+    assert(static_cast<X&>(x)() == 1);
+    assert(static_cast<X const&>(x)() == 2);
+    assert(static_cast<X&&>(x)() == 3);
+    assert(static_cast<X const&&>(x)() == 4);
+  }
+
+  // Make sure the bind_front unspecified-type is NOT invocable when the call would select a
+  // differently-qualified operator().
+  //
+  // For example, if the call to `operator()() &` is ill-formed, the call to the unspecified-type
+  // should be ill-formed and not fall back to the `operator()() const&` overload.
+  {
+    // Make sure we delete the & overload when the underlying call isn't valid
+    {
+      struct F {
+        void operator()() & = delete;
+        void operator()() const&;
+        void operator()() &&;
+        void operator()() const&&;
+      };
+      using X = decltype(std::bind_front(F{}));
+      static_assert(!std::is_invocable_v<X&>);
+      static_assert( std::is_invocable_v<X const&>);
+      static_assert( std::is_invocable_v<X>);
+      static_assert( std::is_invocable_v<X const>);
+    }
+
+    // There's no way to make sure we delete the const& overload when the underlying call isn't valid,
+    // so we can't check this one.
+
+    // Make sure we delete the && overload when the underlying call isn't valid
+    {
+      struct F {
+        void operator()() &;
+        void operator()() const&;
+        void operator()() && = delete;
+        void operator()() const&&;
+      };
+      using X = decltype(std::bind_front(F{}));
+      static_assert( std::is_invocable_v<X&>);
+      static_assert( std::is_invocable_v<X const&>);
+      static_assert(!std::is_invocable_v<X>);
+      static_assert( std::is_invocable_v<X const>);
+    }
+
+    // Make sure we delete the const&& overload when the underlying call isn't valid
+    {
+      struct F {
+        void operator()() &;
+        void operator()() const&;
+        void operator()() &&;
+        void operator()() const&& = delete;
+      };
+      using X = decltype(std::bind_front(F{}));
+      static_assert( std::is_invocable_v<X&>);
+      static_assert( std::is_invocable_v<X const&>);
+      static_assert( std::is_invocable_v<X>);
+      static_assert(!std::is_invocable_v<X const>);
+    }
+  }
+
+  // Some examples by Tim Song
+  {
+    {
+      struct T { };
+      struct F {
+        void operator()(T&&) const &;
+        void operator()(T&&) && = delete;
+      };
+      using X = decltype(std::bind_front(F{}));
+      static_assert(!std::is_invocable_v<X, T>);
+    }
+
+    {
+      struct T { };
+      struct F {
+        void operator()(T const&) const;
+        void operator()(T&&) const = delete;
+      };
+      using X = decltype(std::bind_front(F{}, T{}));
+      static_assert(!std::is_invocable_v<X>);
+    }
+  }
+
+  // Test properties of the constructor of the unspecified-type returned by bind_front.
+  {
+    {
+      MoveOnlyCallable<bool> value(true);
+      auto ret = std::bind_front(std::move(value), 1);
+      assert(ret());
+      assert(ret(1, 2, 3));
+
+      auto ret1 = std::move(ret);
+      assert(!ret());
+      assert(ret1());
+      assert(ret1(1, 2, 3));
+
+      using RetT = decltype(ret);
+      static_assert( std::is_move_constructible<RetT>::value);
+      static_assert(!std::is_copy_constructible<RetT>::value);
+      static_assert(!std::is_move_assignable<RetT>::value);
+      static_assert(!std::is_copy_assignable<RetT>::value);
+    }
+    {
+      CopyCallable<bool> value(true);
+      auto ret = std::bind_front(value, 1);
+      assert(ret());
+      assert(ret(1, 2, 3));
+
+      auto ret1 = std::move(ret);
+      assert(ret1());
+      assert(ret1(1, 2, 3));
+
+      auto ret2 = std::bind_front(std::move(value), 1);
+      assert(!ret());
+      assert(ret2());
+      assert(ret2(1, 2, 3));
+
+      using RetT = decltype(ret);
+      static_assert( std::is_move_constructible<RetT>::value);
+      static_assert( std::is_copy_constructible<RetT>::value);
+      static_assert(!std::is_move_assignable<RetT>::value);
+      static_assert(!std::is_copy_assignable<RetT>::value);
+    }
+    {
+      CopyAssignableWrapper value(true);
+      using RetT = decltype(std::bind_front(value, 1));
+
+      static_assert(std::is_move_constructible<RetT>::value);
+      static_assert(std::is_copy_constructible<RetT>::value);
+      static_assert(std::is_move_assignable<RetT>::value);
+      static_assert(std::is_copy_assignable<RetT>::value);
+    }
+    {
+      MoveAssignableWrapper value(true);
+      using RetT = decltype(std::bind_front(std::move(value), 1));
+
+      static_assert( std::is_move_constructible<RetT>::value);
+      static_assert(!std::is_copy_constructible<RetT>::value);
+      static_assert( std::is_move_assignable<RetT>::value);
+      static_assert(!std::is_copy_assignable<RetT>::value);
+    }
+  }
+
+  // Make sure bind_front is SFINAE friendly
+  {
+    static_assert(!std::is_constructible_v<NotCopyMove, NotCopyMove&>);
+    static_assert(!std::is_move_constructible_v<NotCopyMove>);
+    static_assert(!is_bind_frontable<NotCopyMove>::value);
+    static_assert(!is_bind_frontable<NotCopyMove&>::value);
+
+    auto takeAnything = [](auto&& ...) { };
+    static_assert(!std::is_constructible_v<MoveConstructible, MoveConstructible&>);
+    static_assert( std::is_move_constructible_v<MoveConstructible>);
+    static_assert( is_bind_frontable<decltype(takeAnything), MoveConstructible>::value);
+    static_assert(!is_bind_frontable<decltype(takeAnything), MoveConstructible&>::value);
+
+    static_assert( std::is_constructible_v<NonConstCopyConstructible, NonConstCopyConstructible&>);
+    static_assert(!std::is_move_constructible_v<NonConstCopyConstructible>);
+    static_assert(!is_bind_frontable<decltype(takeAnything), NonConstCopyConstructible&>::value);
+    static_assert(!is_bind_frontable<decltype(takeAnything), NonConstCopyConstructible>::value);
+  }
+
+  // Make sure bind_front's unspecified type's operator() is SFINAE-friendly
+  {
+    using T = decltype(std::bind_front(std::declval<int(*)(int, int)>(), 1));
+    static_assert(!std::is_invocable<T>::value);
+    static_assert( std::is_invocable<T, int>::value);
+    static_assert(!std::is_invocable<T, void*>::value);
+    static_assert(!std::is_invocable<T, int, int>::value);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.bind_front/bind_front.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.bind_front/bind_front.verify.cpp
new file mode 100644
index 0000000..f7d2499
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.bind_front/bind_front.verify.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// functional
+
+// template <class F, class... Args>
+// constexpr unspecified bind_front(F&&, Args&&...);
+
+#include <functional>
+
+#include "test_macros.h"
+
+constexpr int pass(const int n) { return n; }
+
+int simple(int n) { return n; }
+
+template<class T>
+T do_nothing(T t) { return t; }
+
+struct NotMoveConst
+{
+    NotMoveConst(NotMoveConst &&) = delete;
+    NotMoveConst(NotMoveConst const&) = delete;
+
+    NotMoveConst(int) { }
+};
+
+void testNotMoveConst(NotMoveConst) { }
+
+int main(int, char**)
+{
+    int n = 1;
+    const int c = 1;
+
+    auto p = std::bind_front(pass, c);
+    static_assert(p() == 1); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+
+    auto d = std::bind_front(do_nothing, n); // expected-error {{no matching function for call to 'bind_front'}}
+
+    auto t = std::bind_front(testNotMoveConst, NotMoveConst(0)); // expected-error {{no matching function for call to 'bind_front'}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.def/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.def/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.def/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.identity/identity.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.identity/identity.pass.cpp
new file mode 100644
index 0000000..1cce31b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.identity/identity.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// struct identity;
+
+#include <functional>
+
+#include <cassert>
+#include <concepts>
+#include <utility>
+
+#include "MoveOnly.h"
+
+static_assert(std::semiregular<std::identity>);
+static_assert(requires { typename std::identity::is_transparent; });
+
+constexpr bool test() {
+  std::identity id;
+  int i = 42;
+  assert(id(i) == 42);
+  assert(id(std::move(i)) == 42);
+
+  MoveOnly m1 = 2;
+  MoveOnly m2 = id(std::move(m1));
+  assert(m2.get() == 2);
+
+  assert(&id(i) == &i);
+  static_assert(&id(id) == &id);
+
+  const std::identity idc;
+  assert(idc(1) == 1);
+  assert(std::move(id)(1) == 1);
+  assert(std::move(idc)(1) == 1);
+
+  id = idc; // run-time checks assignment
+  static_assert(std::is_same_v<decltype(id(i)), int&>);
+  static_assert(std::is_same_v<decltype(id(std::declval<int&&>())), int&&>);
+  static_assert(
+      std::is_same_v<decltype(id(std::declval<int const&>())), int const&>);
+  static_assert(
+      std::is_same_v<decltype(id(std::declval<int const&&>())), int const&&>);
+  static_assert(std::is_same_v<decltype(id(std::declval<int volatile&>())),
+                               int volatile&>);
+  static_assert(std::is_same_v<decltype(id(std::declval<int volatile&&>())),
+                               int volatile&&>);
+  static_assert(
+      std::is_same_v<decltype(id(std::declval<int const volatile&>())),
+                     int const volatile&>);
+  static_assert(
+      std::is_same_v<decltype(id(std::declval<int const volatile&&>())),
+                     int const volatile&&>);
+
+  struct S {
+    constexpr S() = default;
+    constexpr S(S&&) noexcept(false) {}
+    constexpr S(S const&) noexcept(false) {}
+  };
+  S x;
+  static_assert(noexcept(id(x)));
+  static_assert(noexcept(id(S())));
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke.pass.cpp
new file mode 100644
index 0000000..82849a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke.pass.cpp
@@ -0,0 +1,356 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template<class F, class... Args>
+// invoke_result_t<F, Args...> invoke(F&& f, Args&&... args) // C++17
+//     noexcept(is_nothrow_invocable_v<_Fn, _Args...>);
+
+/// C++14 [func.def] 20.9.0
+/// (1) The following definitions apply to this Clause:
+/// (2) A call signature is the name of a return type followed by a parenthesized
+///     comma-separated list of zero or more argument types.
+/// (3) A callable type is a function object type (20.9) or a pointer to member.
+/// (4) A callable object is an object of a callable type.
+/// (5) A call wrapper type is a type that holds a callable object and supports
+///     a call operation that forwards to that object.
+/// (6) A call wrapper is an object of a call wrapper type.
+/// (7) A target object is the callable object held by a call wrapper.
+
+/// C++14 [func.require] 20.9.1
+///
+/// Define INVOKE (f, t1, t2, ..., tN) as follows:
+///   (1.1) - (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T and t1 is an object of
+///   type T or a reference to an object of type T or a reference to an object of a type derived from T;
+///   (1.2) - ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a class T and t1 is not one of
+///   the types described in the previous item;
+///   (1.3) - t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is an object of type T or a
+///   reference to an object of type T or a reference to an object of a type derived from T;
+///   (1.4) - (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1 is not one of the types
+///   described in the previous item;
+///   (1.5) - f(t1, t2, ..., tN) in all other cases.
+
+#include <functional>
+#include <type_traits>
+#include <utility> // for std::move
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonCopyable {
+    NonCopyable() {}
+private:
+    NonCopyable(NonCopyable const&) = delete;
+    NonCopyable& operator=(NonCopyable const&) = delete;
+};
+
+struct TestClass {
+    explicit TestClass(int x) : data(x) {}
+
+    int& operator()(NonCopyable&&) & { return data; }
+    int const& operator()(NonCopyable&&) const & { return data; }
+    int volatile& operator()(NonCopyable&&) volatile & { return data; }
+    int const volatile& operator()(NonCopyable&&) const volatile & { return data; }
+
+    int&& operator()(NonCopyable&&) && { return std::move(data); }
+    int const&& operator()(NonCopyable&&) const && { return std::move(data); }
+    int volatile&& operator()(NonCopyable&&) volatile && { return std::move(data); }
+    int const volatile&& operator()(NonCopyable&&) const volatile && { return std::move(data); }
+
+    int data;
+private:
+    TestClass(TestClass const&) = delete;
+    TestClass& operator=(TestClass const&) = delete;
+};
+
+struct DerivedFromTestClass : public TestClass {
+    explicit DerivedFromTestClass(int x) : TestClass(x) {}
+};
+
+int& foo(NonCopyable&&) {
+    static int data = 42;
+    return data;
+}
+
+template <class Signature,  class Expect, class Functor>
+void test_b12(Functor&& f) {
+    // Create the callable object.
+    typedef Signature TestClass::*ClassFunc;
+    ClassFunc func_ptr = &TestClass::operator();
+
+    // Create the dummy arg.
+    NonCopyable arg;
+
+    // Check that the deduced return type of invoke is what is expected.
+    typedef decltype(
+        std::invoke(func_ptr, std::forward<Functor>(f), std::move(arg))
+    ) DeducedReturnType;
+    static_assert((std::is_same<DeducedReturnType, Expect>::value), "");
+
+    // Check that result_of_t matches Expect.
+    typedef typename std::result_of<ClassFunc&&(Functor&&, NonCopyable&&)>::type
+      ResultOfReturnType;
+    static_assert((std::is_same<ResultOfReturnType, Expect>::value), "");
+
+    // Run invoke and check the return value.
+    DeducedReturnType ret =
+            std::invoke(func_ptr, std::forward<Functor>(f), std::move(arg));
+    assert(ret == 42);
+}
+
+template <class Expect, class Functor>
+void test_b34(Functor&& f) {
+    // Create the callable object.
+    typedef int TestClass::*ClassFunc;
+    ClassFunc func_ptr = &TestClass::data;
+
+    // Check that the deduced return type of invoke is what is expected.
+    typedef decltype(
+        std::invoke(func_ptr, std::forward<Functor>(f))
+    ) DeducedReturnType;
+    static_assert((std::is_same<DeducedReturnType, Expect>::value), "");
+
+    // Check that result_of_t matches Expect.
+    typedef typename std::result_of<ClassFunc&&(Functor&&)>::type
+            ResultOfReturnType;
+    static_assert((std::is_same<ResultOfReturnType, Expect>::value), "");
+
+    // Run invoke and check the return value.
+    DeducedReturnType ret =
+            std::invoke(func_ptr, std::forward<Functor>(f));
+    assert(ret == 42);
+}
+
+template <class Expect, class Functor>
+void test_b5(Functor&& f) {
+    NonCopyable arg;
+
+    // Check that the deduced return type of invoke is what is expected.
+    typedef decltype(
+        std::invoke(std::forward<Functor>(f), std::move(arg))
+    ) DeducedReturnType;
+    static_assert((std::is_same<DeducedReturnType, Expect>::value), "");
+
+    // Check that result_of_t matches Expect.
+    typedef typename std::result_of<Functor&&(NonCopyable&&)>::type
+            ResultOfReturnType;
+    static_assert((std::is_same<ResultOfReturnType, Expect>::value), "");
+
+    // Run invoke and check the return value.
+    DeducedReturnType ret = std::invoke(std::forward<Functor>(f), std::move(arg));
+    assert(ret == 42);
+}
+
+void bullet_one_two_tests() {
+    {
+        TestClass cl(42);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(cl);
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(cl);
+
+        test_b12<int&&(NonCopyable&&) &&, int&&>(std::move(cl));
+        test_b12<int const&&(NonCopyable&&) const &&, int const&&>(std::move(cl));
+        test_b12<int volatile&&(NonCopyable&&) volatile &&, int volatile&&>(std::move(cl));
+        test_b12<int const volatile&&(NonCopyable&&) const volatile &&, int const volatile&&>(std::move(cl));
+    }
+    {
+        DerivedFromTestClass cl(42);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(cl);
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(cl);
+
+        test_b12<int&&(NonCopyable&&) &&, int&&>(std::move(cl));
+        test_b12<int const&&(NonCopyable&&) const &&, int const&&>(std::move(cl));
+        test_b12<int volatile&&(NonCopyable&&) volatile &&, int volatile&&>(std::move(cl));
+        test_b12<int const volatile&&(NonCopyable&&) const volatile &&, int const volatile&&>(std::move(cl));
+    }
+    {
+        TestClass cl_obj(42);
+        std::reference_wrapper<TestClass> cl(cl_obj);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(cl);
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(cl);
+
+        test_b12<int&(NonCopyable&&) &, int&>(std::move(cl));
+        test_b12<int const&(NonCopyable&&) const &, int const&>(std::move(cl));
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(std::move(cl));
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(std::move(cl));
+    }
+    {
+        DerivedFromTestClass cl_obj(42);
+        std::reference_wrapper<DerivedFromTestClass> cl(cl_obj);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(cl);
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(cl);
+
+        test_b12<int&(NonCopyable&&) &, int&>(std::move(cl));
+        test_b12<int const&(NonCopyable&&) const &, int const&>(std::move(cl));
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(std::move(cl));
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(std::move(cl));
+    }
+    {
+        TestClass cl_obj(42);
+        TestClass *cl = &cl_obj;
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(cl);
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(cl);
+    }
+    {
+        DerivedFromTestClass cl_obj(42);
+        DerivedFromTestClass *cl = &cl_obj;
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+        test_b12<int volatile&(NonCopyable&&) volatile &, int volatile&>(cl);
+        test_b12<int const volatile&(NonCopyable&&) const volatile &, int const volatile&>(cl);
+    }
+}
+
+void bullet_three_four_tests() {
+    {
+        typedef TestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const&>(cl));
+        test_b34<int volatile&>(static_cast<Fn volatile&>(cl));
+        test_b34<int const volatile&>(static_cast<Fn const volatile &>(cl));
+
+        test_b34<int&&>(static_cast<Fn &&>(cl));
+        test_b34<int const&&>(static_cast<Fn const&&>(cl));
+        test_b34<int volatile&&>(static_cast<Fn volatile&&>(cl));
+        test_b34<int const volatile&&>(static_cast<Fn const volatile&&>(cl));
+    }
+    {
+        typedef DerivedFromTestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const&>(cl));
+        test_b34<int volatile&>(static_cast<Fn volatile&>(cl));
+        test_b34<int const volatile&>(static_cast<Fn const volatile &>(cl));
+
+        test_b34<int&&>(static_cast<Fn &&>(cl));
+        test_b34<int const&&>(static_cast<Fn const&&>(cl));
+        test_b34<int volatile&&>(static_cast<Fn volatile&&>(cl));
+        test_b34<int const volatile&&>(static_cast<Fn const volatile&&>(cl));
+    }
+    {
+        typedef TestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(std::reference_wrapper<Fn>(cl));
+        test_b34<int const&>(std::reference_wrapper<Fn const>(cl));
+        test_b34<int volatile&>(std::reference_wrapper<Fn volatile>(cl));
+        test_b34<int const volatile&>(std::reference_wrapper<Fn const volatile>(cl));
+    }
+    {
+        typedef DerivedFromTestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(std::reference_wrapper<Fn>(cl));
+        test_b34<int const&>(std::reference_wrapper<Fn const>(cl));
+        test_b34<int volatile&>(std::reference_wrapper<Fn volatile>(cl));
+        test_b34<int const volatile&>(std::reference_wrapper<Fn const volatile>(cl));
+    }
+    {
+        typedef TestClass Fn;
+        Fn cl_obj(42);
+        Fn* cl = &cl_obj;
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const*>(cl));
+        test_b34<int volatile&>(static_cast<Fn volatile*>(cl));
+        test_b34<int const volatile&>(static_cast<Fn const volatile *>(cl));
+    }
+    {
+        typedef DerivedFromTestClass Fn;
+        Fn cl_obj(42);
+        Fn* cl = &cl_obj;
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const*>(cl));
+        test_b34<int volatile&>(static_cast<Fn volatile*>(cl));
+        test_b34<int const volatile&>(static_cast<Fn const volatile *>(cl));
+    }
+}
+
+void bullet_five_tests() {
+    using FooType = int&(NonCopyable&&);
+    {
+        FooType& fn = foo;
+        test_b5<int &>(fn);
+    }
+    {
+        FooType* fn = foo;
+        test_b5<int &>(fn);
+    }
+    {
+        typedef TestClass Fn;
+        Fn cl(42);
+        test_b5<int&>(cl);
+        test_b5<int const&>(static_cast<Fn const&>(cl));
+        test_b5<int volatile&>(static_cast<Fn volatile&>(cl));
+        test_b5<int const volatile&>(static_cast<Fn const volatile &>(cl));
+
+        test_b5<int&&>(static_cast<Fn &&>(cl));
+        test_b5<int const&&>(static_cast<Fn const&&>(cl));
+        test_b5<int volatile&&>(static_cast<Fn volatile&&>(cl));
+        test_b5<int const volatile&&>(static_cast<Fn const volatile&&>(cl));
+    }
+}
+
+struct CopyThrows {
+  CopyThrows() {}
+  CopyThrows(CopyThrows const&) {}
+  CopyThrows(CopyThrows&&) noexcept {}
+};
+
+struct NoThrowCallable {
+  void operator()() noexcept {}
+  void operator()(CopyThrows) noexcept {}
+};
+
+struct ThrowsCallable {
+  void operator()() {}
+};
+
+struct MemberObj {
+  int x;
+};
+
+void noexcept_test() {
+    {
+        NoThrowCallable obj; ((void)obj); // suppress unused warning
+        CopyThrows arg; ((void)arg); // suppress unused warning
+        static_assert(noexcept(std::invoke(obj)), "");
+        static_assert(!noexcept(std::invoke(obj, arg)), "");
+        static_assert(noexcept(std::invoke(obj, std::move(arg))), "");
+    }
+    {
+        ThrowsCallable obj; ((void)obj); // suppress unused warning
+        static_assert(!noexcept(std::invoke(obj)), "");
+    }
+    {
+        MemberObj obj{42}; ((void)obj); // suppress unused warning.
+        static_assert(noexcept(std::invoke(&MemberObj::x, obj)), "");
+    }
+}
+
+int main(int, char**) {
+    bullet_one_two_tests();
+    bullet_three_four_tests();
+    bullet_five_tests();
+    noexcept_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke_constexpr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke_constexpr.pass.cpp
new file mode 100644
index 0000000..bfd8765
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke_constexpr.pass.cpp
@@ -0,0 +1,282 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template<class F, class... Args>
+// constexpr  // constexpr in C++20
+// invoke_result_t<F, Args...> invoke(F&& f, Args&&... args)
+//     noexcept(is_nothrow_invocable_v<_Fn, _Args...>);
+
+/// C++14 [func.def] 20.9.0
+/// (1) The following definitions apply to this Clause:
+/// (2) A call signature is the name of a return type followed by a parenthesized
+///     comma-separated list of zero or more argument types.
+/// (3) A callable type is a function object type (20.9) or a pointer to member.
+/// (4) A callable object is an object of a callable type.
+/// (5) A call wrapper type is a type that holds a callable object and supports
+///     a call operation that forwards to that object.
+/// (6) A call wrapper is an object of a call wrapper type.
+/// (7) A target object is the callable object held by a call wrapper.
+
+/// C++14 [func.require] 20.9.1
+///
+/// Define INVOKE (f, t1, t2, ..., tN) as follows:
+///   (1.1) - (t1.*f)(t2, ..., tN) when f is a pointer to a member function of a class T and t1 is an object of
+///   type T or a reference to an object of type T or a reference to an object of a type derived from T;
+///   (1.2) - ((*t1).*f)(t2, ..., tN) when f is a pointer to a member function of a class T and t1 is not one of
+///   the types described in the previous item;
+///   (1.3) - t1.*f when N == 1 and f is a pointer to member data of a class T and t1 is an object of type T or a
+///   reference to an object of type T or a reference to an object of a type derived from T;
+///   (1.4) - (*t1).*f when N == 1 and f is a pointer to member data of a class T and t1 is not one of the types
+///   described in the previous item;
+///   (1.5) - f(t1, t2, ..., tN) in all other cases.
+
+#include <functional>
+#include <type_traits>
+#include <utility> // for std::move
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonCopyable {
+    constexpr NonCopyable() {}
+private:
+    NonCopyable(NonCopyable const&) = delete;
+    NonCopyable& operator=(NonCopyable const&) = delete;
+};
+
+struct TestClass {
+    constexpr explicit TestClass(int x) : data(x) {}
+
+    constexpr int& operator()(NonCopyable&&) & { return data; }
+    constexpr int const& operator()(NonCopyable&&) const & { return data; }
+
+    constexpr int&& operator()(NonCopyable&&) && { return std::move(data); }
+    constexpr int const&& operator()(NonCopyable&&) const && { return std::move(data); }
+
+    int data;
+private:
+    TestClass(TestClass const&) = delete;
+    TestClass& operator=(TestClass const&) = delete;
+};
+
+struct DerivedFromTestClass : public TestClass {
+    constexpr explicit DerivedFromTestClass(int x) : TestClass(x) {}
+};
+
+static constexpr int data = 42;
+constexpr const int& foo(NonCopyable&&) {
+    return data;
+}
+
+template <class Signature,  class Expect, class Functor>
+constexpr void test_b12(Functor&& f) {
+    // Create the callable object.
+    typedef Signature TestClass::*ClassFunc;
+    ClassFunc func_ptr = &TestClass::operator();
+
+    // Create the dummy arg.
+    NonCopyable arg;
+
+    // Check that the deduced return type of invoke is what is expected.
+    typedef decltype(
+        std::invoke(func_ptr, std::forward<Functor>(f), std::move(arg))
+    ) DeducedReturnType;
+    static_assert((std::is_same<DeducedReturnType, Expect>::value), "");
+
+    // Check that result_of_t matches Expect.
+    typedef typename std::result_of<ClassFunc&&(Functor&&, NonCopyable&&)>::type
+      ResultOfReturnType;
+    static_assert((std::is_same<ResultOfReturnType, Expect>::value), "");
+
+    // Run invoke and check the return value.
+    DeducedReturnType ret =
+            std::invoke(func_ptr, std::forward<Functor>(f), std::move(arg));
+    assert(ret == 42);
+}
+
+template <class Expect, class Functor>
+constexpr void test_b34(Functor&& f) {
+    // Create the callable object.
+    typedef int TestClass::*ClassFunc;
+    ClassFunc func_ptr = &TestClass::data;
+
+    // Check that the deduced return type of invoke is what is expected.
+    typedef decltype(
+        std::invoke(func_ptr, std::forward<Functor>(f))
+    ) DeducedReturnType;
+    static_assert((std::is_same<DeducedReturnType, Expect>::value), "");
+
+    // Check that result_of_t matches Expect.
+    typedef typename std::result_of<ClassFunc&&(Functor&&)>::type
+            ResultOfReturnType;
+    static_assert((std::is_same<ResultOfReturnType, Expect>::value), "");
+
+    // Run invoke and check the return value.
+    DeducedReturnType ret =
+            std::invoke(func_ptr, std::forward<Functor>(f));
+    assert(ret == 42);
+}
+
+template <class Expect, class Functor>
+constexpr void test_b5(Functor&& f) {
+    NonCopyable arg;
+
+    // Check that the deduced return type of invoke is what is expected.
+    typedef decltype(
+        std::invoke(std::forward<Functor>(f), std::move(arg))
+    ) DeducedReturnType;
+    static_assert((std::is_same<DeducedReturnType, Expect>::value), "");
+
+    // Check that result_of_t matches Expect.
+    typedef typename std::result_of<Functor&&(NonCopyable&&)>::type
+            ResultOfReturnType;
+    static_assert((std::is_same<ResultOfReturnType, Expect>::value), "");
+
+    // Run invoke and check the return value.
+    DeducedReturnType ret = std::invoke(std::forward<Functor>(f), std::move(arg));
+    assert(ret == 42);
+}
+
+constexpr bool bullet_one_two_tests() {
+    {
+        TestClass cl(42);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+
+        test_b12<int&&(NonCopyable&&) &&, int&&>(std::move(cl));
+        test_b12<int const&&(NonCopyable&&) const &&, int const&&>(std::move(cl));
+    }
+    {
+        DerivedFromTestClass cl(42);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+
+        test_b12<int&&(NonCopyable&&) &&, int&&>(std::move(cl));
+        test_b12<int const&&(NonCopyable&&) const &&, int const&&>(std::move(cl));
+    }
+    {
+        TestClass cl_obj(42);
+        std::reference_wrapper<TestClass> cl(cl_obj);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+
+        test_b12<int&(NonCopyable&&) &, int&>(std::move(cl));
+        test_b12<int const&(NonCopyable&&) const &, int const&>(std::move(cl));
+    }
+    {
+        DerivedFromTestClass cl_obj(42);
+        std::reference_wrapper<DerivedFromTestClass> cl(cl_obj);
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+
+        test_b12<int&(NonCopyable&&) &, int&>(std::move(cl));
+        test_b12<int const&(NonCopyable&&) const &, int const&>(std::move(cl));
+    }
+    {
+        TestClass cl_obj(42);
+        TestClass *cl = &cl_obj;
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+    }
+    {
+        DerivedFromTestClass cl_obj(42);
+        DerivedFromTestClass *cl = &cl_obj;
+        test_b12<int&(NonCopyable&&) &, int&>(cl);
+        test_b12<int const&(NonCopyable&&) const &, int const&>(cl);
+    }
+    return true;
+}
+
+constexpr bool bullet_three_four_tests() {
+    {
+        typedef TestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const&>(cl));
+
+        test_b34<int&&>(static_cast<Fn &&>(cl));
+        test_b34<int const&&>(static_cast<Fn const&&>(cl));
+    }
+    {
+        typedef DerivedFromTestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const&>(cl));
+
+        test_b34<int&&>(static_cast<Fn &&>(cl));
+        test_b34<int const&&>(static_cast<Fn const&&>(cl));
+    }
+    {
+        typedef TestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(std::reference_wrapper<Fn>(cl));
+        test_b34<int const&>(std::reference_wrapper<Fn const>(cl));
+    }
+    {
+        typedef DerivedFromTestClass Fn;
+        Fn cl(42);
+        test_b34<int&>(std::reference_wrapper<Fn>(cl));
+        test_b34<int const&>(std::reference_wrapper<Fn const>(cl));
+    }
+    {
+        typedef TestClass Fn;
+        Fn cl_obj(42);
+        Fn* cl = &cl_obj;
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const*>(cl));
+    }
+    {
+        typedef DerivedFromTestClass Fn;
+        Fn cl_obj(42);
+        Fn* cl = &cl_obj;
+        test_b34<int&>(cl);
+        test_b34<int const&>(static_cast<Fn const*>(cl));
+    }
+    return true;
+}
+
+constexpr bool bullet_five_tests() {
+    using FooType = const int&(NonCopyable&&);
+    {
+        FooType& fn = foo;
+        test_b5<const int &>(fn);
+    }
+    {
+        FooType* fn = foo;
+        test_b5<const int &>(fn);
+    }
+    {
+        typedef TestClass Fn;
+        Fn cl(42);
+        test_b5<int&>(cl);
+        test_b5<int const&>(static_cast<Fn const&>(cl));
+
+        test_b5<int&&>(static_cast<Fn &&>(cl));
+        test_b5<int const&&>(static_cast<Fn const&&>(cl));
+    }
+    return true;
+}
+
+int main(int, char**) {
+    bullet_one_two_tests();
+    bullet_three_four_tests();
+    bullet_five_tests();
+
+    static_assert(bullet_one_two_tests());
+    static_assert(bullet_three_four_tests());
+    static_assert(bullet_five_tests());
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke_feature_test_macro.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke_feature_test_macro.pass.cpp
new file mode 100644
index 0000000..b040465
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.invoke/invoke_feature_test_macro.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class F, class ...Args>
+// result_of_t<F&&(Args&&...)> invoke(F&&, Args&&...);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER <= 14
+# ifdef __cpp_lib_invoke
+#   error Feature test macro should be defined
+# endif
+#else
+# ifndef __cpp_lib_invoke
+#   error Feature test macro not defined
+# endif
+# if __cpp_lib_invoke != 201411
+#   error __cpp_lib_invoke has the wrong value
+# endif
+#endif
+
+int foo(int) { return 42; }
+
+int main(int, char**) {
+#if defined(__cpp_lib_invoke)
+  assert(std::invoke(foo, 101) == 42);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_data.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_data.compile.fail.cpp
new file mode 100644
index 0000000..f68b019
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_data.compile.fail.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+
+// <functional>
+
+// template<Returnable R, class T> unspecified mem_fn(R T::* pm);
+
+#include <functional>
+#include <cassert>
+
+struct A
+{
+    double data_;
+};
+
+template <class F>
+void
+test(F f)
+{
+    {
+    A a;
+    f(a) = 5;
+    assert(a.data_ == 5);
+    A* ap = &a;
+    f(ap) = 6;
+    assert(a.data_ == 6);
+    const A* cap = ap;
+    assert(f(cap) == f(ap));
+    f(cap) = 7;
+    }
+}
+
+int main(int, char**)
+{
+    test(std::mem_fn(&A::data_));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_data.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_data.pass.cpp
new file mode 100644
index 0000000..d6cd06c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_data.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable R, class T> unspecified mem_fn(R T::* pm);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    double data_;
+};
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test(F f)
+{
+    {
+    A a = {0.0};
+    f(a) = 5;
+    assert(a.data_ == 5);
+    A* ap = &a;
+    f(ap) = 6;
+    assert(a.data_ == 6);
+    const A* cap = ap;
+    assert(f(cap) == f(ap));
+    const F& cf = f;
+    assert(cf(ap) == f(ap));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test(std::mem_fn(&A::data_));
+
+#if TEST_STD_VER >= 20
+    static_assert(test(std::mem_fn(&A::data_)));
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function.pass.cpp
new file mode 100644
index 0000000..88d4108
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable R, class T, CopyConstructible... Args>
+//   unspecified mem_fn(R (T::* pm)(Args...));
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    TEST_CONSTEXPR_CXX14 char test0() {return 'a';}
+    TEST_CONSTEXPR_CXX14 char test1(int) {return 'b';}
+    TEST_CONSTEXPR_CXX14 char test2(int, double) {return 'c';}
+};
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test0(F f)
+{
+    {
+    A a;
+    assert(f(a) == 'a');
+    A* ap = &a;
+    assert(f(ap) == 'a');
+    const F& cf = f;
+    assert(cf(ap) == 'a');
+    }
+    return true;
+}
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test1(F f)
+{
+    {
+    A a;
+    assert(f(a, 1) == 'b');
+    A* ap = &a;
+    assert(f(ap, 2) == 'b');
+    const F& cf = f;
+    assert(cf(ap, 2) == 'b');
+    }
+    return true;
+}
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test2(F f)
+{
+    {
+    A a;
+    assert(f(a, 1, 2) == 'c');
+    A* ap = &a;
+    assert(f(ap, 2, 3.5) == 'c');
+    const F& cf = f;
+    assert(cf(ap, 2, 3.5) == 'c');
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test0(std::mem_fn(&A::test0));
+    test1(std::mem_fn(&A::test1));
+    test2(std::mem_fn(&A::test2));
+#if TEST_STD_VER >= 11
+    static_assert((noexcept(std::mem_fn(&A::test0))), ""); // LWG#2489
+#endif
+
+#if TEST_STD_VER >= 20
+    static_assert(test0(std::mem_fn(&A::test0)));
+    static_assert(test1(std::mem_fn(&A::test1)));
+    static_assert(test2(std::mem_fn(&A::test2)));
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_const.pass.cpp
new file mode 100644
index 0000000..057998c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_const.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable R, class T, CopyConstructible... Args>
+//   unspecified mem_fn(R (T::* pm)(Args...) const);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    TEST_CONSTEXPR char test0() const {return 'a';}
+    TEST_CONSTEXPR char test1(int) const {return 'b';}
+    TEST_CONSTEXPR char test2(int, double) const {return 'c';}
+};
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test0(F f)
+{
+    {
+    A a;
+    assert(f(a) == 'a');
+    A* ap = &a;
+    assert(f(ap) == 'a');
+    const A* cap = &a;
+    assert(f(cap) == 'a');
+    const F& cf = f;
+    assert(cf(ap) == 'a');
+    }
+    return true;
+}
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test1(F f)
+{
+    {
+    A a;
+    assert(f(a, 1) == 'b');
+    A* ap = &a;
+    assert(f(ap, 2) == 'b');
+    const A* cap = &a;
+    assert(f(cap, 2) == 'b');
+    const F& cf = f;
+    assert(cf(ap, 2) == 'b');
+    }
+    return true;
+}
+
+template <class F>
+TEST_CONSTEXPR_CXX20 bool
+test2(F f)
+{
+    {
+    A a;
+    assert(f(a, 1, 2) == 'c');
+    A* ap = &a;
+    assert(f(ap, 2, 3.5) == 'c');
+    const A* cap = &a;
+    assert(f(cap, 2, 3.5) == 'c');
+    const F& cf = f;
+    assert(cf(ap, 2, 3.5) == 'c');
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test0(std::mem_fn(&A::test0));
+    test1(std::mem_fn(&A::test1));
+    test2(std::mem_fn(&A::test2));
+
+#if TEST_STD_VER >= 20
+    static_assert(test0(std::mem_fn(&A::test0)));
+    static_assert(test1(std::mem_fn(&A::test1)));
+    static_assert(test2(std::mem_fn(&A::test2)));
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_const_volatile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_const_volatile.pass.cpp
new file mode 100644
index 0000000..175f2de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_const_volatile.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable R, class T, CopyConstructible... Args>
+//   unspecified mem_fn(R (T::* pm)(Args...) const volatile);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char test0() const volatile {return 'a';}
+    char test1(int) const volatile {return 'b';}
+    char test2(int, double) const volatile {return 'c';}
+};
+
+template <class F>
+void
+test0(F f)
+{
+    {
+    A a;
+    assert(f(a) == 'a');
+    A* ap = &a;
+    assert(f(ap) == 'a');
+    const volatile A* cap = &a;
+    assert(f(cap) == 'a');
+    const F& cf = f;
+    assert(cf(ap) == 'a');
+    }
+}
+
+template <class F>
+void
+test1(F f)
+{
+    {
+    A a;
+    assert(f(a, 1) == 'b');
+    A* ap = &a;
+    assert(f(ap, 2) == 'b');
+    const volatile A* cap = &a;
+    assert(f(cap, 2) == 'b');
+    const F& cf = f;
+    assert(cf(ap, 2) == 'b');
+    }
+}
+
+template <class F>
+void
+test2(F f)
+{
+    {
+    A a;
+    assert(f(a, 1, 2) == 'c');
+    A* ap = &a;
+    assert(f(ap, 2, 3.5) == 'c');
+    const volatile A* cap = &a;
+    assert(f(cap, 2, 3.5) == 'c');
+    const F& cf = f;
+    assert(cf(ap, 2, 3.5) == 'c');
+    }
+}
+
+int main(int, char**)
+{
+    test0(std::mem_fn(&A::test0));
+    test1(std::mem_fn(&A::test1));
+    test2(std::mem_fn(&A::test2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_volatile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_volatile.pass.cpp
new file mode 100644
index 0000000..7f27c2f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/member_function_volatile.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable R, class T, CopyConstructible... Args>
+//   unspecified mem_fn(R (T::* pm)(Args...) volatile);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    char test0() volatile {return 'a';}
+    char test1(int) volatile {return 'b';}
+    char test2(int, double) volatile {return 'c';}
+};
+
+template <class F>
+void
+test0(F f)
+{
+    {
+    A a;
+    assert(f(a) == 'a');
+    A* ap = &a;
+    assert(f(ap) == 'a');
+    volatile A* cap = &a;
+    assert(f(cap) == 'a');
+    const F& cf = f;
+    assert(cf(ap) == 'a');
+    }
+}
+
+template <class F>
+void
+test1(F f)
+{
+    {
+    A a;
+    assert(f(a, 1) == 'b');
+    A* ap = &a;
+    assert(f(ap, 2) == 'b');
+    volatile A* cap = &a;
+    assert(f(cap, 2) == 'b');
+    const F& cf = f;
+    assert(cf(ap, 2) == 'b');
+    }
+}
+
+template <class F>
+void
+test2(F f)
+{
+    {
+    A a;
+    assert(f(a, 1, 2) == 'c');
+    A* ap = &a;
+    assert(f(ap, 2, 3.5) == 'c');
+    volatile A* cap = &a;
+    assert(f(cap, 2, 3.5) == 'c');
+    const F& cf = f;
+    assert(cf(ap, 2, 3.5) == 'c');
+    }
+}
+
+int main(int, char**)
+{
+    test0(std::mem_fn(&A::test0));
+    test1(std::mem_fn(&A::test1));
+    test2(std::mem_fn(&A::test2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..2bb8e9f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.memfn/robust_against_adl.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+typedef Holder<Incomplete> *Ptr;
+
+struct A {
+    Ptr no_args() const { return nullptr; }
+    Ptr one_arg(Ptr p) const { return p; }
+    void one_arg_void(Ptr) const { }
+};
+
+int main(int, char**)
+{
+    A a;
+    A *pa = &a;
+    const A *cpa = &a;
+    Ptr x = nullptr;
+    const Ptr cx = nullptr;
+    std::mem_fn(&A::no_args)(a);
+    std::mem_fn(&A::no_args)(pa);
+    std::mem_fn(&A::no_args)(*cpa);
+    std::mem_fn(&A::no_args)(cpa);
+    std::mem_fn(&A::one_arg)(a, x);
+    std::mem_fn(&A::one_arg)(pa, x);
+    std::mem_fn(&A::one_arg)(a, cx);
+    std::mem_fn(&A::one_arg)(pa, cx);
+    std::mem_fn(&A::one_arg)(*cpa, x);
+    std::mem_fn(&A::one_arg)(cpa, x);
+    std::mem_fn(&A::one_arg)(*cpa, cx);
+    std::mem_fn(&A::one_arg)(cpa, cx);
+    std::mem_fn(&A::one_arg_void)(a, x);
+    std::mem_fn(&A::one_arg_void)(pa, x);
+    std::mem_fn(&A::one_arg_void)(a, cx);
+    std::mem_fn(&A::one_arg_void)(pa, cx);
+    std::mem_fn(&A::one_arg_void)(*cpa, x);
+    std::mem_fn(&A::one_arg_void)(cpa, x);
+    std::mem_fn(&A::one_arg_void)(*cpa, cx);
+    std::mem_fn(&A::one_arg_void)(cpa, cx);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.not_fn/not_fn.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.not_fn/not_fn.pass.cpp
new file mode 100644
index 0000000..1bf833b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.not_fn/not_fn.pass.cpp
@@ -0,0 +1,462 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class F> unspecified not_fn(F&& f);
+
+#include <functional>
+#include <type_traits>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "type_id.h"
+#include "callable_types.h"
+
+///////////////////////////////////////////////////////////////////////////////
+//                        BOOL TEST TYPES
+///////////////////////////////////////////////////////////////////////////////
+
+struct EvilBool {
+  static int bang_called;
+
+  EvilBool(EvilBool const&) = default;
+  EvilBool(EvilBool&&) = default;
+
+  friend EvilBool operator!(EvilBool const& other) {
+    ++bang_called;
+    return EvilBool{!other.value};
+  }
+
+private:
+  friend struct MoveOnlyCallable<EvilBool>;
+  friend struct CopyCallable<EvilBool>;
+  friend struct NoExceptCallable<EvilBool>;
+
+  constexpr explicit EvilBool(bool x) : value(x) {}
+  EvilBool& operator=(EvilBool const& other) = default;
+
+public:
+  bool value;
+};
+
+int EvilBool::bang_called = 0;
+
+struct ExplicitBool {
+  ExplicitBool(ExplicitBool const&) = default;
+  ExplicitBool(ExplicitBool&&) = default;
+
+  constexpr explicit operator bool() const { return value; }
+
+private:
+  friend struct MoveOnlyCallable<ExplicitBool>;
+  friend struct CopyCallable<ExplicitBool>;
+
+  constexpr explicit ExplicitBool(bool x) : value(x) {}
+  constexpr ExplicitBool& operator=(bool x) {
+      value = x;
+      return *this;
+  }
+
+  bool value;
+};
+
+
+struct NoExceptEvilBool {
+  NoExceptEvilBool(NoExceptEvilBool const&) = default;
+  NoExceptEvilBool(NoExceptEvilBool&&) = default;
+  NoExceptEvilBool& operator=(NoExceptEvilBool const& other) = default;
+
+  constexpr explicit NoExceptEvilBool(bool x) : value(x) {}
+
+  friend NoExceptEvilBool operator!(NoExceptEvilBool const& other) noexcept {
+    return NoExceptEvilBool{!other.value};
+  }
+
+  bool value;
+};
+
+
+
+TEST_CONSTEXPR_CXX20
+bool constructor_tests()
+{
+    {
+        using T = MoveOnlyCallable<bool>;
+        T value(true);
+        using RetT = decltype(std::not_fn(std::move(value)));
+        static_assert(std::is_move_constructible<RetT>::value, "");
+        static_assert(!std::is_copy_constructible<RetT>::value, "");
+        static_assert(!std::is_move_assignable<RetT>::value, "");
+        static_assert(!std::is_copy_assignable<RetT>::value, "");
+        auto ret = std::not_fn(std::move(value));
+        // test it was moved from
+        assert(value.value == false);
+        // test that ret() negates the original value 'true'
+        assert(ret() == false);
+        assert(ret(0, 0.0, "blah") == false);
+        // Move ret and test that it was moved from and that ret2 got the
+        // original value.
+        auto ret2 = std::move(ret);
+        assert(ret() == true);
+        assert(ret2() == false);
+        assert(ret2(42) == false);
+    }
+    {
+        using T = CopyCallable<bool>;
+        T value(false);
+        using RetT = decltype(std::not_fn(value));
+        static_assert(std::is_move_constructible<RetT>::value, "");
+        static_assert(std::is_copy_constructible<RetT>::value, "");
+        static_assert(!std::is_move_assignable<RetT>::value, "");
+        static_assert(!std::is_copy_assignable<RetT>::value, "");
+        auto ret = std::not_fn(value);
+        // test that value is unchanged (copied not moved)
+        assert(value.value == false);
+        // test 'ret' has the original value
+        assert(ret() == true);
+        assert(ret(42, 100) == true);
+        // move from 'ret' and check that 'ret2' has the original value.
+        auto ret2 = std::move(ret);
+        assert(ret() == false);
+        assert(ret2() == true);
+        assert(ret2("abc") == true);
+        // initialize not_fn with rvalue
+        auto ret3 = std::not_fn(std::move(value));
+        assert(ret(0) == false);
+        assert(ret3(0) == true);
+    }
+    {
+        using T = CopyAssignableWrapper;
+        T value(true);
+        T value2(false);
+        using RetT = decltype(std::not_fn(value));
+        static_assert(std::is_move_constructible<RetT>::value, "");
+        static_assert(std::is_copy_constructible<RetT>::value, "");
+        auto ret = std::not_fn(value);
+        assert(ret() == false);
+        auto ret2 = std::not_fn(value2);
+        assert(ret2() == true);
+    }
+    {
+        using T = MoveAssignableWrapper;
+        T value(true);
+        T value2(false);
+        using RetT = decltype(std::not_fn(std::move(value)));
+        static_assert(std::is_move_constructible<RetT>::value, "");
+        static_assert(!std::is_copy_constructible<RetT>::value, "");
+        static_assert(!std::is_copy_assignable<RetT>::value, "");
+        auto ret = std::not_fn(std::move(value));
+        assert(ret() == false);
+        auto ret2 = std::not_fn(std::move(value2));
+        assert(ret2() == true);
+    }
+    return true;
+}
+
+void return_type_tests()
+{
+    using std::is_same;
+    {
+        using T = CopyCallable<bool>;
+        auto ret = std::not_fn(T{false});
+        static_assert(is_same<decltype(ret()), bool>::value, "");
+        static_assert(is_same<decltype(ret("abc")), bool>::value, "");
+        assert(ret() == true);
+    }
+    {
+        using T = CopyCallable<ExplicitBool>;
+        auto ret = std::not_fn(T{true});
+        static_assert(is_same<decltype(ret()), bool>::value, "");
+        static_assert(is_same<decltype(ret(std::string("abc"))), bool>::value, "");
+        assert(ret() == false);
+    }
+    {
+        using T = CopyCallable<EvilBool>;
+        auto ret = std::not_fn(T{false});
+        static_assert(is_same<decltype(ret()), EvilBool>::value, "");
+        EvilBool::bang_called = 0;
+        auto value_ret = ret();
+        assert(EvilBool::bang_called == 1);
+        assert(value_ret.value == true);
+        ret();
+        assert(EvilBool::bang_called == 2);
+    }
+}
+
+// Other tests only test using objects with call operators. Test various
+// other callable types here.
+TEST_CONSTEXPR_CXX20
+bool other_callable_types_test()
+{
+    { // test with function pointer
+        auto ret = std::not_fn(returns_true);
+        assert(ret() == false);
+    }
+    { // test with lambda
+        auto returns_value = [](bool value) { return value; };
+        auto ret = std::not_fn(returns_value);
+        assert(ret(true) == false);
+        assert(ret(false) == true);
+    }
+    { // test with pointer to member function
+        MemFunCallable mt(true);
+        const MemFunCallable mf(false);
+        auto ret = std::not_fn(&MemFunCallable::return_value);
+        assert(ret(mt) == false);
+        assert(ret(mf) == true);
+        assert(ret(&mt) == false);
+        assert(ret(&mf) == true);
+    }
+    { // test with pointer to member function
+        MemFunCallable mt(true);
+        MemFunCallable mf(false);
+        auto ret = std::not_fn(&MemFunCallable::return_value_nc);
+        assert(ret(mt) == false);
+        assert(ret(mf) == true);
+        assert(ret(&mt) == false);
+        assert(ret(&mf) == true);
+    }
+    { // test with pointer to member data
+        MemFunCallable mt(true);
+        const MemFunCallable mf(false);
+        auto ret = std::not_fn(&MemFunCallable::value);
+        assert(ret(mt) == false);
+        assert(ret(mf) == true);
+        assert(ret(&mt) == false);
+        assert(ret(&mf) == true);
+    }
+    return true;
+}
+
+void throws_in_constructor_test()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    struct ThrowsOnCopy {
+      ThrowsOnCopy(ThrowsOnCopy const&) {
+        throw 42;
+      }
+      ThrowsOnCopy() = default;
+      bool operator()() const {
+        assert(false);
+#ifdef TEST_COMPILER_MSVC
+        __assume(0);
+#else
+        __builtin_unreachable();
+#endif
+      }
+    };
+    {
+        ThrowsOnCopy cp;
+        try {
+            (void)std::not_fn(cp);
+            assert(false);
+        } catch (int const& value) {
+            assert(value == 42);
+        }
+    }
+#endif
+}
+
+TEST_CONSTEXPR_CXX20
+bool call_operator_sfinae_test() {
+    { // wrong number of arguments
+        using T = decltype(std::not_fn(returns_true));
+        static_assert(std::is_invocable<T>::value, ""); // callable only with no args
+        static_assert(!std::is_invocable<T, bool>::value, "");
+    }
+    { // violates const correctness (member function pointer)
+        using T = decltype(std::not_fn(&MemFunCallable::return_value_nc));
+        static_assert(std::is_invocable<T, MemFunCallable&>::value, "");
+        static_assert(!std::is_invocable<T, const MemFunCallable&>::value, "");
+    }
+    { // violates const correctness (call object)
+        using Obj = CopyCallable<bool>;
+        using NCT = decltype(std::not_fn(Obj{true}));
+        using CT = const NCT;
+        static_assert(std::is_invocable<NCT>::value, "");
+        static_assert(!std::is_invocable<CT>::value, "");
+    }
+    { // returns bad type with no operator!
+        auto fn = [](auto x) { return x; };
+        using T = decltype(std::not_fn(fn));
+        static_assert(std::is_invocable<T, bool>::value, "");
+        static_assert(!std::is_invocable<T, std::string>::value, "");
+    }
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20
+bool call_operator_forwarding_test()
+{
+    using Fn = ForwardingCallObject;
+    Fn::State st;
+    auto obj = std::not_fn(Fn{st});
+    const auto& c_obj = obj;
+    { // test zero args
+        obj();
+        assert(st.check_call<>(CT_NonConst | CT_LValue));
+        std::move(obj)();
+        assert(st.check_call<>(CT_NonConst | CT_RValue));
+        c_obj();
+        assert(st.check_call<>(CT_Const | CT_LValue));
+        std::move(c_obj)();
+        assert(st.check_call<>(CT_Const | CT_RValue));
+    }
+    { // test value categories
+        int x = 42;
+        const int cx = 42;
+        obj(x);
+        assert(st.check_call<int&>(CT_NonConst | CT_LValue));
+        obj(cx);
+        assert(st.check_call<const int&>(CT_NonConst | CT_LValue));
+        obj(std::move(x));
+        assert(st.check_call<int&&>(CT_NonConst | CT_LValue));
+        obj(std::move(cx));
+        assert(st.check_call<const int&&>(CT_NonConst | CT_LValue));
+        obj(42);
+        assert(st.check_call<int&&>(CT_NonConst | CT_LValue));
+    }
+    { // test value categories - rvalue
+        int x = 42;
+        const int cx = 42;
+        std::move(obj)(x);
+        assert(st.check_call<int&>(CT_NonConst | CT_RValue));
+        std::move(obj)(cx);
+        assert(st.check_call<const int&>(CT_NonConst | CT_RValue));
+        std::move(obj)(std::move(x));
+        assert(st.check_call<int&&>(CT_NonConst | CT_RValue));
+        std::move(obj)(std::move(cx));
+        assert(st.check_call<const int&&>(CT_NonConst | CT_RValue));
+        std::move(obj)(42);
+        assert(st.check_call<int&&>(CT_NonConst | CT_RValue));
+    }
+    { // test value categories - const call
+        int x = 42;
+        const int cx = 42;
+        c_obj(x);
+        assert(st.check_call<int&>(CT_Const | CT_LValue));
+        c_obj(cx);
+        assert(st.check_call<const int&>(CT_Const | CT_LValue));
+        c_obj(std::move(x));
+        assert(st.check_call<int&&>(CT_Const | CT_LValue));
+        c_obj(std::move(cx));
+        assert(st.check_call<const int&&>(CT_Const | CT_LValue));
+        c_obj(42);
+        assert(st.check_call<int&&>(CT_Const | CT_LValue));
+    }
+    { // test value categories - const call rvalue
+        int x = 42;
+        const int cx = 42;
+        std::move(c_obj)(x);
+        assert(st.check_call<int&>(CT_Const | CT_RValue));
+        std::move(c_obj)(cx);
+        assert(st.check_call<const int&>(CT_Const | CT_RValue));
+        std::move(c_obj)(std::move(x));
+        assert(st.check_call<int&&>(CT_Const | CT_RValue));
+        std::move(c_obj)(std::move(cx));
+        assert(st.check_call<const int&&>(CT_Const | CT_RValue));
+        std::move(c_obj)(42);
+        assert(st.check_call<int&&>(CT_Const | CT_RValue));
+    }
+    { // test multi arg
+        using String = const char *;
+        const double y = 3.14;
+        String s = "abc";
+        obj(42, std::move(y), s, String{"foo"});
+        assert((st.check_call<int&&, const double&&, String&, String&&>(CT_NonConst | CT_LValue)));
+        std::move(obj)(42, std::move(y), s, String{"foo"});
+        assert((st.check_call<int&&, const double&&, String&, String&&>(CT_NonConst | CT_RValue)));
+        c_obj(42, std::move(y), s, String{"foo"});
+        assert((st.check_call<int&&, const double&&, String&, String&&>(CT_Const  | CT_LValue)));
+        std::move(c_obj)(42, std::move(y), s, String{"foo"});
+        assert((st.check_call<int&&, const double&&, String&, String&&>(CT_Const  | CT_RValue)));
+    }
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20
+bool call_operator_noexcept_test()
+{
+    {
+        using T = ConstCallable<bool>;
+        T value(true);
+        auto ret = std::not_fn(value);
+        static_assert(!noexcept(ret()), "call should not be noexcept");
+        auto const& cret = ret;
+        static_assert(!noexcept(cret()), "call should not be noexcept");
+    }
+    {
+        using T = NoExceptCallable<bool>;
+        T value(true);
+        auto ret = std::not_fn(value);
+        LIBCPP_STATIC_ASSERT(noexcept(!std::__invoke(value)), "");
+#if TEST_STD_VER > 14
+        static_assert(noexcept(!std::invoke(value)), "");
+#endif
+        static_assert(noexcept(ret()), "call should be noexcept");
+        auto const& cret = ret;
+        static_assert(noexcept(cret()), "call should be noexcept");
+    }
+    {
+        using T = NoExceptCallable<NoExceptEvilBool>;
+        T value(true);
+        auto ret = std::not_fn(value);
+        static_assert(noexcept(ret()), "call should not be noexcept");
+        auto const& cret = ret;
+        static_assert(noexcept(cret()), "call should not be noexcept");
+    }
+    {
+        using T = NoExceptCallable<EvilBool>;
+        T value(true);
+        auto ret = std::not_fn(value);
+        static_assert(!noexcept(ret()), "call should not be noexcept");
+        auto const& cret = ret;
+        static_assert(!noexcept(cret()), "call should not be noexcept");
+    }
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20
+bool test_lwg2767() {
+    // See https://cplusplus.github.io/LWG/lwg-defects.html#2767
+    struct Abstract { virtual void f() const = 0; };
+    struct Derived : public Abstract { void f() const {} };
+    struct F { constexpr bool operator()(Abstract&&) { return false; } };
+    {
+        Derived d;
+        Abstract &a = d;
+        bool b = std::not_fn(F{})(std::move(a));
+        assert(b);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    constructor_tests();
+    return_type_tests();
+    other_callable_types_test();
+    throws_in_constructor_test();
+    call_operator_sfinae_test(); // somewhat of an extension
+    call_operator_forwarding_test();
+    call_operator_noexcept_test();
+    test_lwg2767();
+
+#if TEST_STD_VER >= 20
+    static_assert(constructor_tests());
+    static_assert(other_callable_types_test());
+    static_assert(call_operator_sfinae_test()); // somewhat of an extension
+    static_assert(call_operator_forwarding_test());
+    static_assert(call_operator_noexcept_test());
+    static_assert(test_lwg2767());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/INVOKE_tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/INVOKE_tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..00b7d53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/INVOKE_tested_elsewhere.pass.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// INVOKE (f, t1, t2, ..., tN)
+
+// The tests for INVOKE (f, t1, t2, ..., tN) live in the "test/libcxx" tree
+// since they require calling the implementation specific "__invoke" and
+// "__invoke_constexpr" functions.
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/binary_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/binary_function.pass.cpp
new file mode 100644
index 0000000..9302bf6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/binary_function.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+// binary_function was removed in C++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// binary_function
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::binary_function<int, short, bool> bf;
+    static_assert((std::is_same<bf::first_argument_type, int>::value), "");
+    static_assert((std::is_same<bf::second_argument_type, short>::value), "");
+    static_assert((std::is_same<bf::result_type, bool>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/unary_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/unary_function.pass.cpp
new file mode 100644
index 0000000..224e9fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.require/unary_function.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+// unary_function was removed in C++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// unary_function
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::unary_function<int, bool> uf;
+    static_assert((std::is_same<uf::argument_type, int>::value), "");
+    static_assert((std::is_same<uf::result_type, bool>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/default.pass.cpp
new file mode 100644
index 0000000..b37a2b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/default.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+#include <string>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::boyer_moore_searcher<Iter2> s{b2, e2};
+    assert(result == std::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    char ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    char ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+void test_custom_pred() {
+    std::string long_string(1024, '0');
+    std::boyer_moore_searcher searcher(std::begin(long_string), std::end(long_string));
+    const char str[] = "1234";
+    auto ret = searcher(std::begin(str), std::end(str));
+    assert(ret.first == std::end(str));
+    assert(ret.second == std::end(str));
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+    test_custom_pred();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/hash.pass.cpp
new file mode 100644
index 0000000..a7665f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/hash.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned /*max_count*/) {
+    std::boyer_moore_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>>
+          s{b2, e2};
+    assert(result == std::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/hash.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/hash.pred.pass.cpp
new file mode 100644
index 0000000..c70782c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/hash.pred.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::boyer_moore_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>,
+                 count_equal>
+          s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),     sa);
+
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..863b4a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/implicit_ctad.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore_searcher
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <functional>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    char const* str = "hello";
+    std::boyer_moore_searcher searcher(str, str + 3);
+    ASSERT_SAME_TYPE(decltype(searcher), std::boyer_moore_searcher<char const*, std::hash<char>, std::equal_to<>>);
+  }
+  {
+    struct myhash : std::hash<char> { };
+    char const* str = "hello";
+    std::boyer_moore_searcher searcher(str, str + 3, myhash{}, std::not_equal_to<>());
+    ASSERT_SAME_TYPE(decltype(searcher), std::boyer_moore_searcher<char const*, myhash, std::not_equal_to<>>);
+  }
+  {
+    struct myhash : std::hash<char> { };
+    char const* str = "hello";
+    std::boyer_moore_searcher searcher(str, str + 3, myhash{});
+    ASSERT_SAME_TYPE(decltype(searcher), std::boyer_moore_searcher<char const*, myhash, std::equal_to<>>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/pred.pass.cpp
new file mode 100644
index 0000000..396e284
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bm/pred.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_searcher {
+// public:
+//   boyer_moore_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                        Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <algorithm>
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::boyer_moore_searcher<Iter2,
+           typename std::hash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/default.pass.cpp
new file mode 100644
index 0000000..d8e986e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/default.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::boyer_moore_horspool_searcher<Iter2> s{b2, e2};
+    assert(result == std::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    char ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    char ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/hash.pass.cpp
new file mode 100644
index 0000000..8ada7ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/hash.pass.cpp
@@ -0,0 +1,125 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned /*max_count*/) {
+    std::boyer_moore_horspool_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>>
+          s{b2, e2};
+    assert(result == std::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/hash.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/hash.pred.pass.cpp
new file mode 100644
index 0000000..ec74f53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/hash.pred.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename T> struct MyHash {
+    size_t operator () (T t) const { return static_cast<size_t>(t); }
+};
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::boyer_moore_horspool_searcher<Iter2,
+                 MyHash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>,
+                 count_equal>
+          s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..778f6d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/implicit_ctad.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore_horspool_searcher
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <functional>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    char const* str = "hello";
+    std::boyer_moore_horspool_searcher searcher(str, str + 3);
+    ASSERT_SAME_TYPE(decltype(searcher), std::boyer_moore_horspool_searcher<char const*, std::hash<char>, std::equal_to<>>);
+  }
+  {
+    struct myhash : std::hash<char> { };
+    char const* str = "hello";
+    std::boyer_moore_horspool_searcher searcher(str, str + 3, myhash{}, std::not_equal_to<>());
+    ASSERT_SAME_TYPE(decltype(searcher), std::boyer_moore_horspool_searcher<char const*, myhash, std::not_equal_to<>>);
+  }
+  {
+    struct myhash : std::hash<char> { };
+    char const* str = "hello";
+    std::boyer_moore_horspool_searcher searcher(str, str + 3, myhash{});
+    ASSERT_SAME_TYPE(decltype(searcher), std::boyer_moore_horspool_searcher<char const*, myhash, std::equal_to<>>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/pred.pass.cpp
new file mode 100644
index 0000000..9f6dcbd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.bmh/pred.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// boyer_moore_horspool searcher
+// template<class RandomAccessIterator1,
+//          class Hash = hash<typename iterator_traits<RandomAccessIterator1>::value_type>,
+//          class BinaryPredicate = equal_to<>>
+// class boyer_moore_horspool_searcher {
+// public:
+//   boyer_moore_horspool_searcher(RandomAccessIterator1 pat_first, RandomAccessIterator1 pat_last,
+//                                 Hash hf = Hash(), BinaryPredicate pred = BinaryPredicate());
+//
+//   template<class RandomAccessIterator2>
+//   pair<RandomAccessIterator2, RandomAccessIterator2>
+//   operator()(RandomAccessIterator2 first, RandomAccessIterator2 last) const;
+//
+// private:
+//   RandomAccessIterator1 pat_first_; // exposition only
+//   RandomAccessIterator1 pat_last_;  // exposition only
+//   Hash                  hash_;      // exposition only
+//   BinaryPredicate       pred_;      // exposition only
+// };
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    static unsigned count;
+    template <class T>
+    bool operator()(const T& x, const T& y) const
+        {++count; return x == y;}
+};
+
+unsigned count_equal::count = 0;
+
+template <typename Iter1, typename Iter2>
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result, unsigned max_count) {
+    std::boyer_moore_horspool_searcher<Iter2,
+           typename std::hash<typename std::remove_cv<typename std::iterator_traits<Iter2>::value_type>::type>, count_equal> s{b2, e2};
+    count_equal::count = 0;
+    assert(result == std::search(b1, e1, s));
+    assert(count_equal::count <= max_count);
+}
+
+template <class Iter1, class Iter2>
+void
+test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+template <class Iter1, class Iter2>
+void
+test2()
+{
+    char ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia),      sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2),    sa);
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia),      0);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1), sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3), 3*sa);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia),      sa*sa);
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1), (sa-1)*sa);
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1),    sa);
+    char ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    char ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1), sb);
+    char id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1), sb*2);
+    char ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4), sb*3);
+    char ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8), sb*4);
+    char ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    char ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3),  sh*3);
+}
+
+int main(int, char**) {
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+    test2<random_access_iterator<const char*>, random_access_iterator<const char*> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/default.pass.cpp
new file mode 100644
index 0000000..9c51b3a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/default.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// default searcher
+// template<class _ForwardIterator, class _BinaryPredicate = equal_to<>>
+// class default_searcher {
+// public:
+//     default_searcher(_ForwardIterator __f, _ForwardIterator __l,
+//                             _BinaryPredicate __p = _BinaryPredicate())
+//         : __first_(__f), __last_(__l), __pred_(__p) {}
+//
+//     template <typename _ForwardIterator2>
+//     pair<_ForwardIterator2, _ForwardIterator2>
+//     operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const {
+//         return std::search(__f, __l, __first_, __last_, __pred_);
+//         }
+//
+// private:
+//     _ForwardIterator __first_;
+//     _ForwardIterator __last_;
+//     _BinaryPredicate __pred_;
+//     };
+
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+template <typename Iter1, typename Iter2>
+TEST_CONSTEXPR_CXX20
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    std::default_searcher<Iter2> s{b2, e2};
+    assert(result == std::search(b1, e1, s));
+}
+
+template <class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+    int ij[] = {0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sj = sizeof(ij)/sizeof(ij[0]);
+    int ik[] = {0, 0, 0, 0, 1, 1, 1, 1, 0, 0};
+    const unsigned sk = sizeof(ik)/sizeof(ik[0]);
+    do_search(Iter1(ij), Iter1(ij+sj), Iter2(ik), Iter2(ik+sk), Iter1(ij+6));
+
+    return true;
+}
+
+int main(int, char**) {
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<forward_iterator<const int*>, forward_iterator<const int*>>());
+    static_assert(test<forward_iterator<const int*>, bidirectional_iterator<const int*>>());
+    static_assert(test<forward_iterator<const int*>, random_access_iterator<const int*>>());
+    static_assert(test<bidirectional_iterator<const int*>, forward_iterator<const int*>>());
+    static_assert(test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>>());
+    static_assert(test<bidirectional_iterator<const int*>, random_access_iterator<const int*>>());
+    static_assert(test<random_access_iterator<const int*>, forward_iterator<const int*>>());
+    static_assert(test<random_access_iterator<const int*>, bidirectional_iterator<const int*>>());
+    static_assert(test<random_access_iterator<const int*>, random_access_iterator<const int*>>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/default.pred.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/default.pred.pass.cpp
new file mode 100644
index 0000000..8ad0fe3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/default.pred.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// default searcher
+// template<class _ForwardIterator, class _BinaryPredicate = equal_to<>>
+// class default_searcher {
+// public:
+//     default_searcher(_ForwardIterator __f, _ForwardIterator __l,
+//                             _BinaryPredicate __p = _BinaryPredicate())
+//         : __first_(__f), __last_(__l), __pred_(__p) {}
+//
+//     template <typename _ForwardIterator2>
+//     pair<_ForwardIterator2, _ForwardIterator2>
+//     operator () (_ForwardIterator2 __f, _ForwardIterator2 __l) const {
+//         return std::search(__f, __l, __first_, __last_, __pred_);
+//         }
+//
+// private:
+//     _ForwardIterator __first_;
+//     _ForwardIterator __last_;
+//     _BinaryPredicate __pred_;
+//     };
+
+
+#include <algorithm>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct count_equal
+{
+    int *count;
+
+    template <class T>
+    TEST_CONSTEXPR_CXX14 bool operator()(const T& x, const T& y) const
+        {++*count; return x == y;}
+};
+
+template <typename Iter1, typename Iter2>
+TEST_CONSTEXPR_CXX20
+void do_search(Iter1 b1, Iter1 e1, Iter2 b2, Iter2 e2, Iter1 result) {
+    int count = 0;
+    std::default_searcher<Iter2, count_equal> s{b2, e2, count_equal{&count}};
+    assert(result == std::search(b1, e1, s));
+    auto d1 = std::distance(b1, e1);
+    auto d2 = std::distance(b2, e2);
+    assert((count >= 1) || (d2 == 0) || (d1 < d2));
+    assert((d1 < d2) || count <= d1 * (d1 - d2 + 1));
+}
+
+template <class Iter1, class Iter2>
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    int ia[] = {0, 1, 2, 3, 4, 5};
+    const unsigned sa = sizeof(ia)/sizeof(ia[0]);
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia),    Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+1),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+1),    Iter2(ia+2),  Iter1(ia+1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+2),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+2),    Iter2(ia+3),  Iter1(ia+2));
+    do_search(Iter1(ia), Iter1(ia),      Iter2(ia+2),    Iter2(ia+3),  Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-1), Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia+sa-3), Iter2(ia+sa), Iter1(ia+sa-3));
+    do_search(Iter1(ia), Iter1(ia+sa),   Iter2(ia),      Iter2(ia+sa), Iter1(ia));
+    do_search(Iter1(ia), Iter1(ia+sa-1), Iter2(ia),      Iter2(ia+sa), Iter1(ia+sa-1));
+    do_search(Iter1(ia), Iter1(ia+1),    Iter2(ia),      Iter2(ia+sa), Iter1(ia+1));
+    int ib[] = {0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sb = sizeof(ib)/sizeof(ib[0]);
+    int ic[] = {1};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ic), Iter2(ic+1), Iter1(ib+1));
+    int id[] = {1, 2};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(id), Iter2(id+2), Iter1(ib+1));
+    int ie[] = {1, 2, 3};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ie), Iter2(ie+3), Iter1(ib+4));
+    int ig[] = {1, 2, 3, 4};
+    do_search(Iter1(ib), Iter1(ib+sb), Iter2(ig), Iter2(ig+4), Iter1(ib+8));
+    int ih[] = {0, 1, 1, 1, 1, 2, 3, 0, 1, 2, 3, 4};
+    const unsigned sh = sizeof(ih)/sizeof(ih[0]);
+    int ii[] = {1, 1, 2};
+    do_search(Iter1(ih), Iter1(ih+sh), Iter2(ii), Iter2(ii+3), Iter1(ih+3));
+
+    return true;
+}
+
+int main(int, char**) {
+    test<forward_iterator<const int*>, forward_iterator<const int*> >();
+    test<forward_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<forward_iterator<const int*>, random_access_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, forward_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<bidirectional_iterator<const int*>, random_access_iterator<const int*> >();
+    test<random_access_iterator<const int*>, forward_iterator<const int*> >();
+    test<random_access_iterator<const int*>, bidirectional_iterator<const int*> >();
+    test<random_access_iterator<const int*>, random_access_iterator<const int*> >();
+
+#if TEST_STD_VER >= 20
+    static_assert(test<forward_iterator<const int*>, forward_iterator<const int*>>());
+    static_assert(test<forward_iterator<const int*>, bidirectional_iterator<const int*>>());
+    static_assert(test<forward_iterator<const int*>, random_access_iterator<const int*>>());
+    static_assert(test<bidirectional_iterator<const int*>, forward_iterator<const int*>>());
+    static_assert(test<bidirectional_iterator<const int*>, bidirectional_iterator<const int*>>());
+    static_assert(test<bidirectional_iterator<const int*>, random_access_iterator<const int*>>());
+    static_assert(test<random_access_iterator<const int*>, forward_iterator<const int*>>());
+    static_assert(test<random_access_iterator<const int*>, bidirectional_iterator<const int*>>());
+    static_assert(test<random_access_iterator<const int*>, random_access_iterator<const int*>>());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..3c90295
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.search/func.search.default/implicit_ctad.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <functional>
+
+// default searcher
+
+// Make sure that the implicitly-generated CTAD works.
+
+#include <functional>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    char const* str = "hello";
+    std::default_searcher searcher(str, str + 3);
+    ASSERT_SAME_TYPE(decltype(searcher), std::default_searcher<char const*, std::equal_to<>>);
+  }
+  {
+    char const* str = "hello";
+    std::default_searcher searcher(str, str + 3, std::not_equal_to<>());
+    ASSERT_SAME_TYPE(decltype(searcher), std::default_searcher<char const*, std::not_equal_to<>>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/bad_function_call.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/bad_function_call.pass.cpp
new file mode 100644
index 0000000..c390e59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/bad_function_call.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Class bad_function_call
+
+// class bad_function_call
+//     : public exception
+// {
+// public:
+//   // 20.7.16.1.1, constructor:
+//   bad_function_call();
+// };
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::bad_function_call>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/func.wrap.badcall.const/bad_function_call_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/func.wrap.badcall.const/bad_function_call_ctor.pass.cpp
new file mode 100644
index 0000000..a5a8c59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/func.wrap.badcall.const/bad_function_call_ctor.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Class bad_function_call
+
+// bad_function_call();
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::bad_function_call ex;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/addressof.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/addressof.pass.cpp
new file mode 100644
index 0000000..717e655
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/addressof.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// Make sure we can use std::function with a type that has a hostile overload
+// of operator&().
+
+#include <functional>
+#include <cassert>
+
+#include "operator_hijacker.h"
+
+struct TrapAddressof : operator_hijacker {
+    int operator()() const { return 1; }
+};
+
+int main(int, char**) {
+    std::function<int()> f = TrapAddressof();
+    assert(f() == 1);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.pass.cpp
new file mode 100644
index 0000000..a9e0373
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// See https://llvm.org/PR20002
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using Fn = std::function<void()>;
+struct S : public std::function<void()> { using function::function; };
+
+int main(int, char**) {
+    S s( [](){} );
+    S f1( s );
+#if TEST_STD_VER <= 14
+    S f2(std::allocator_arg, std::allocator<int>{}, s);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.verify.cpp
new file mode 100644
index 0000000..6c44e0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.verify.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+//
+// Make sure we can't initialize a std::function using an allocator (http://wg21.link/p0302r1).
+// These constructors were removed in C++17.
+
+#include <functional>
+#include <memory>
+
+struct S : public std::function<void()> { using function::function; };
+
+void f() {
+  S f1( [](){} );
+  S f2(std::allocator_arg, std::allocator<int>{}, f1); // expected-error {{no matching constructor for initialization of 'S'}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.alg/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.alg/swap.pass.cpp
new file mode 100644
index 0000000..3924274
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.alg/swap.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template <MoveConstructible  R, MoveConstructible ... ArgTypes>
+//   void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept;
+
+#include <functional>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    explicit A(int j)
+    {
+        ++count;
+        data_[0] = j;
+    }
+
+    A(const A& a)
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = a.data_[i];
+    }
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int id() const {return data_[0];}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+int h(int) {return 1;}
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = A(2);
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(f2.target<A>()->id() == 2);
+    swap(f1, f2);
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 2);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = g;
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    swap(f1, f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = A(1);
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    swap(f1, f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = h;
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == h);
+    swap(f1, f2);
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == h);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.cap/operator_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.cap/operator_bool.pass.cpp
new file mode 100644
index 0000000..9742d53
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.cap/operator_bool.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// explicit operator bool() const
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    static_assert(std::is_constructible<bool, std::function<void()> >::value, "");
+    static_assert(!std::is_convertible<std::function<void()>, bool>::value, "");
+
+    {
+    std::function<int(int)> f;
+    assert(!f);
+    f = g;
+    assert(f);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F.pass.cpp
new file mode 100644
index 0000000..c1ad528
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(F);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int foo(int) const {return 1;}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+#if TEST_STD_VER >= 11
+struct RValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) && {}
+};
+struct LValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) & {}
+};
+#endif
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = (int (*)(int))0;
+    assert(!f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    {
+    std::function<int(const A*, int)> f = &A::foo;
+    assert(f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (A::*)(int) const>() != 0);
+    }
+    {
+      std::function<void(int)> f(&g);
+      assert(f);
+      RTTI_ASSERT(f.target<int(*)(int)>() != 0);
+      f(1);
+    }
+    {
+        std::function <void()> f(static_cast<void (*)()>(0));
+        assert(!f);
+    }
+#if TEST_STD_VER >= 11
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_constructible<Fn, LValueCallable&>::value, "");
+        static_assert(std::is_constructible<Fn, LValueCallable>::value, "");
+        static_assert(!std::is_constructible<Fn, RValueCallable&>::value, "");
+        static_assert(!std::is_constructible<Fn, RValueCallable>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_assign.pass.cpp
new file mode 100644
index 0000000..589528d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_assign.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+ // UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class F>
+//   requires CopyConstructible<F> && Callable<F, ArgTypes..>
+//         && Convertible<Callable<F, ArgTypes...>::result_type
+//   operator=(F f);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int foo(int) const {return 1;}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+#if TEST_STD_VER >= 11
+struct RValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) && {}
+};
+struct LValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) & {}
+};
+#endif
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    f = (int (*)(int))0;
+    assert(!f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    {
+    std::function<int(const A*, int)> f;
+    f = &A::foo;
+    assert(f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (A::*)(int) const>() != 0);
+    }
+    {
+    std::function<void(int)> f;
+    f = &g;
+    assert(f);
+    RTTI_ASSERT(f.target<int(*)(int)>() != 0);
+    f(1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_assignable<Fn&, LValueCallable&>::value, "");
+        static_assert(std::is_assignable<Fn&, LValueCallable>::value, "");
+        static_assert(!std::is_assignable<Fn&, RValueCallable&>::value, "");
+        static_assert(!std::is_assignable<Fn&, RValueCallable>::value, "");
+    }
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_assignable<Fn&, Fn&&>::value, "");
+    }
+    {
+        using F1 = std::function<void(int, int)>;
+        using F2 = std::function<void(int, int, int)>;
+        static_assert(!std::is_assignable<F1&, F2&&>::value, "");
+    }
+    {
+        using F1 = std::function<int(int, int)>;
+        using F2 = std::function<A  (int, int)>;
+        static_assert(!std::is_assignable<F1&, F2&&>::value, "");
+        static_assert(!std::is_assignable<F2&, F1&&>::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_incomplete.pass.cpp
new file mode 100644
index 0000000..531324f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_incomplete.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class F> function(F);
+
+// Allow incomplete argument types in the __is_callable check
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct X{
+    typedef std::function<void(X&)> callback_type;
+    virtual ~X() {}
+private:
+    callback_type _cb;
+};
+
+struct IncompleteReturnType {
+  std::function<IncompleteReturnType ()> fn;
+};
+
+
+int called = 0;
+IncompleteReturnType test_fn() {
+  ++called;
+  IncompleteReturnType I;
+  return I;
+}
+
+// See llvm.org/PR34298
+void test_pr34298()
+{
+  static_assert(std::is_copy_constructible<IncompleteReturnType>::value, "");
+  static_assert(std::is_copy_assignable<IncompleteReturnType>::value, "");
+  {
+    IncompleteReturnType X;
+    X.fn = test_fn;
+    const IncompleteReturnType& CX = X;
+    IncompleteReturnType X2 = CX;
+    assert(X2.fn);
+    assert(called == 0);
+    X2.fn();
+    assert(called == 1);
+  }
+  {
+    IncompleteReturnType Empty;
+    IncompleteReturnType X2 = Empty;
+    assert(!X2.fn);
+  }
+}
+
+int main(int, char**) {
+  test_pr34298();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_nullptr.pass.cpp
new file mode 100644
index 0000000..6ed4c5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_nullptr.pass.cpp
@@ -0,0 +1,250 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(Fp);
+
+// Ensure that __not_null works for all function types.
+// See https://llvm.org/PR23589
+
+//------------------------------------------------------------------------------
+// TESTING std::function<...>::__not_null(Callable)
+//
+// Concerns:
+//  1) The call __not_null(Callable) is well formed and correct for each
+//     possible 'Callable' type category. These categories include:
+//      1a) function pointers
+//      1b) member function pointer
+//      1c) member data pointer
+//      1d) callable class type
+//      1e) lambdas
+//    Categories 1a, 1b, and 1c are 'Nullable' types. Only objects of these
+//    types can be null. The other categories are not tested here.
+//  3) '__not_null(Callable)' is well formed when the call signature includes
+//      varargs.
+//  4) '__not_null(Callable)' works for Callable types with all arities less
+//     than or equal to 3 in C++03.
+//  5) '__not_null(Callable)' works when 'Callable' is a member function
+//     pointer to a cv or ref qualified function type.
+//
+// Plan:
+//  1 For categories 1a, 1b and 1c define a set of
+//    'Callable' objects for this category. This set should include examples
+//    of arity 0, 1, 2 and possible 3 including versions with varargs as the
+//    last parameter.
+//
+//  2 For each 'Callable' object in categories 1a, 1b and 1c do the following.
+//
+//    1 Define a type 'std::function<Sig>' as 'F' where 'Sig' is compatible with
+//      the signature of the 'Callable' object.
+//
+//    2 Create an object of type 'F' using a null pointer of type 'Callable'.
+//      Check that 'F.target<Callable>()' is null.
+//
+//    3 Create an object of type 'F' that is not null. Check that
+//      'F.target<Callable>()' is not null and is equal to the original
+//      argument.
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+///////////////////////////////////////////////////////////////////////////////
+int foo() { return 42; }
+int foo(int) { return 42; }
+int foo(int, int) { return 42; }
+int foo(int, int, int) { return 42; }
+
+int foo(...) { return 42; }
+int foo(int, ...) { return 42; }
+int foo(int, int, ...) { return 42; }
+int foo(int, int, int, ...) { return 42; }
+
+///////////////////////////////////////////////////////////////////////////////
+struct MemFun03 {
+    int foo() { return 42; }
+    int foo() const { return 42; }
+    int foo() volatile { return 42; }
+    int foo() const volatile { return 42; }
+
+    int foo(int) { return 42; }
+    int foo(int) const { return 42; }
+    int foo(int) volatile { return 42; }
+    int foo(int) const volatile { return 42; }
+
+    int foo(int, int) { return 42; }
+    int foo(int, int) const { return 42; }
+    int foo(int, int) volatile { return 42; }
+    int foo(int, int) const volatile { return 42; }
+
+    int foo(int, int, int) { return 42; }
+    int foo(int, int, int) const { return 42; }
+    int foo(int, int, int) volatile { return 42; }
+    int foo(int, int, int) const volatile { return 42; }
+
+    int foo(...) { return 42; }
+    int foo(...) const { return 42; }
+    int foo(...) volatile { return 42; }
+    int foo(...) const volatile { return 42; }
+
+    int foo(int, ...) { return 42; }
+    int foo(int, ...) const { return 42; }
+    int foo(int, ...) volatile { return 42; }
+    int foo(int, ...) const volatile { return 42; }
+
+    int foo(int, int, ...) { return 42; }
+    int foo(int, int, ...) const { return 42; }
+    int foo(int, int, ...) volatile { return 42; }
+    int foo(int, int, ...) const volatile { return 42; }
+
+    int foo(int, int, int, ...) { return 42; }
+    int foo(int, int, int, ...) const { return 42; }
+    int foo(int, int, int, ...) volatile { return 42; }
+    int foo(int, int, int, ...) const volatile { return 42; }
+};
+
+#if TEST_STD_VER >= 11
+struct MemFun11 {
+    int foo() & { return 42; }
+    int foo() const & { return 42; }
+    int foo() volatile & { return 42; }
+    int foo() const volatile & { return 42; }
+
+    int foo(...) & { return 42; }
+    int foo(...) const & { return 42; }
+    int foo(...) volatile & { return 42; }
+    int foo(...) const volatile & { return 42; }
+
+    int foo() && { return 42; }
+    int foo() const && { return 42; }
+    int foo() volatile && { return 42; }
+    int foo() const volatile && { return 42; }
+
+    int foo(...) && { return 42; }
+    int foo(...) const && { return 42; }
+    int foo(...) volatile && { return 42; }
+    int foo(...) const volatile && { return 42; }
+};
+#endif // TEST_STD_VER >= 11
+
+struct MemData {
+    int foo;
+};
+
+// Create a non-null free function by taking the address of
+// &static_cast<Tp&>(foo);
+template <class Tp>
+struct Creator {
+    static Tp create() {
+        return &foo;
+    }
+};
+
+// Create a non-null member pointer.
+template <class Ret, class Class>
+struct Creator<Ret Class::*> {
+    typedef Ret Class::*ReturnType;
+    static ReturnType create() {
+        return &Class::foo;
+    }
+};
+
+template <class TestFn, class Fn>
+void test_imp() {
+    { // Check that the null value is detected
+        TestFn tf = nullptr;
+        std::function<Fn> f = tf;
+        RTTI_ASSERT(f.template target<TestFn>() == nullptr);
+    }
+    { // Check that the non-null value is detected.
+        TestFn tf = Creator<TestFn>::create();
+        assert(tf != nullptr);
+        std::function<Fn> f = tf;
+        RTTI_ASSERT(f.template target<TestFn>() != nullptr);
+        RTTI_ASSERT(*f.template target<TestFn>() == tf);
+    }
+}
+
+void test_func() {
+    test_imp<int(*)(), int()>();
+    test_imp<int(*)(...), int()>();
+    test_imp<int(*)(int), int(int)>();
+    test_imp<int(*)(int, ...), int(int)>();
+    test_imp<int(*)(int, int), int(int, int)>();
+    test_imp<int(*)(int, int, ...), int(int, int)>();
+    test_imp<int(*)(int, int, int), int(int, int, int)>();
+    test_imp<int(*)(int, int, int, ...), int(int, int, int)>();
+}
+
+void test_mf() {
+    test_imp<int(MemFun03::*)(), int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...), int(MemFun03&)>();
+    test_imp<int(MemFun03::*)() const, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...) const, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)() volatile, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...) volatile, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)() const volatile, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...) const volatile, int(MemFun03&)>();
+
+    test_imp<int(MemFun03::*)(int), int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...), int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int) const, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...) const, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int) volatile, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...) volatile, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int) const volatile, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...) const volatile, int(MemFun03&, int)>();
+
+    test_imp<int(MemFun03::*)(int, int), int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...), int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int) const, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...) const, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int) volatile, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...) volatile, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int) const volatile, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...) const volatile, int(MemFun03&, int, int)>();
+
+#if TEST_STD_VER >= 11
+    test_imp<int(MemFun11::*)() &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)() const &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) const &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)() volatile &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) volatile &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)() const volatile &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) const volatile &, int(MemFun11&)>();
+
+    test_imp<int(MemFun11::*)() &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)() const &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) const &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)() volatile &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) volatile &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)() const volatile &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) const volatile &&, int(MemFun11&&)>();
+#endif
+}
+
+void test_md() {
+    test_imp<int MemData::*, int(MemData&)>();
+}
+
+int main(int, char**) {
+    test_func();
+    test_mf();
+    test_md();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.pass.cpp
new file mode 100644
index 0000000..fd73fba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::function<int(int)> f(std::allocator_arg, bare_allocator<int>());
+    assert(!f);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.verify.cpp
new file mode 100644
index 0000000..49c8284
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.verify.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(std::allocator_arg, std::allocator<int>()); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.pass.cpp
new file mode 100644
index 0000000..1c54647
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class F, class A> function(allocator_arg_t, const A&, F);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "count_new.h"
+#include "../function_types.h"
+
+#if TEST_STD_VER >= 11
+struct RValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) && {}
+};
+struct LValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) & {}
+};
+#endif
+
+test_allocator_statistics alloc_stats;
+
+class DummyClass {};
+
+template <class FuncType, class AllocType>
+void test_FunctionObject(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    FunctionObject target;
+    assert(FunctionObject::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    std::function<FuncType> f2(std::allocator_arg, alloc, target);
+    assert(FunctionObject::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(f2.template target<FunctionObject>());
+    assert(f2.template target<FuncType>() == 0);
+    assert(f2.template target<FuncType*>() == 0);
+    }
+    assert(FunctionObject::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+
+template <class FuncType, class AllocType>
+void test_FreeFunction(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    FuncType* target = &FreeFunction;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    std::function<FuncType> f2(std::allocator_arg, alloc, target);
+    // The allocator may not fit in the small object buffer, if we allocated
+    // check it was done via the allocator.
+    assert(globalMemCounter.checkOutstandingNewEq(alloc_stats.alloc_count));
+    assert(f2.template target<FuncType*>());
+    assert(*f2.template target<FuncType*>() == target);
+    assert(f2.template target<FuncType>() == 0);
+    assert(f2.template target<DummyClass>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class TargetType, class FuncType, class AllocType>
+void test_MemFunClass(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    TargetType target = &MemFunClass::foo;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    std::function<FuncType> f2(std::allocator_arg, alloc, target);
+    assert(globalMemCounter.checkOutstandingNewEq(alloc_stats.alloc_count));
+    assert(f2.template target<TargetType>());
+    assert(*f2.template target<TargetType>() == target);
+    assert(f2.template target<FuncType*>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class Alloc>
+void test_for_alloc(Alloc& alloc) {
+    test_FunctionObject<int()>(alloc);
+    test_FunctionObject<int(int)>(alloc);
+    test_FunctionObject<int(int, int)>(alloc);
+    test_FunctionObject<int(int, int, int)>(alloc);
+
+    test_FreeFunction<int()>(alloc);
+    test_FreeFunction<int(int)>(alloc);
+    test_FreeFunction<int(int, int)>(alloc);
+    test_FreeFunction<int(int, int, int)>(alloc);
+
+    test_MemFunClass<int(MemFunClass::*)() const, int(MemFunClass&)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int) const, int(MemFunClass&, int)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int, int) const, int(MemFunClass&, int, int)>(alloc);
+}
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  {
+    bare_allocator<DummyClass> bare_alloc;
+    test_for_alloc(bare_alloc);
+  }
+    {
+        non_default_test_allocator<DummyClass> non_default_alloc(42, &alloc_stats);
+        test_for_alloc(non_default_alloc);
+    }
+#if TEST_STD_VER >= 11
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, LValueCallable&>::value, "");
+        static_assert(std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, LValueCallable>::value, "");
+        static_assert(!std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, RValueCallable&>::value, "");
+        static_assert(!std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, RValueCallable>::value, "");
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp
new file mode 100644
index 0000000..2353b51
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class F, class A> function(allocator_arg_t, const A&, F);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+
+void foo(int) {}
+
+int main(int, char**)
+{
+    std::function<void(int)> f(std::allocator_arg, std::allocator<int>(), foo); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.pass.cpp
new file mode 100644
index 0000000..4537e6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, const function&);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "count_new.h"
+#include "../function_types.h"
+
+class DummyClass {};
+
+template <class FuncType, class AllocType>
+void test_FunctionObject(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    // Construct function from FunctionObject.
+    std::function<FuncType> f = FunctionObject();
+    assert(FunctionObject::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.template target<FunctionObject>());
+    RTTI_ASSERT(f.template target<FuncType>() == 0);
+    RTTI_ASSERT(f.template target<FuncType*>() == 0);
+    // Copy function with allocator
+    std::function<FuncType> f2(std::allocator_arg, alloc, f);
+    assert(FunctionObject::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f2.template target<FunctionObject>());
+    RTTI_ASSERT(f2.template target<FuncType>() == 0);
+    RTTI_ASSERT(f2.template target<FuncType*>() == 0);
+    }
+    assert(FunctionObject::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class FuncType, class AllocType>
+void test_FreeFunction(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    // Construct function from function pointer.
+    FuncType* target = &FreeFunction;
+    std::function<FuncType> f = target;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.template target<FuncType*>());
+    RTTI_ASSERT(*f.template target<FuncType*>() == target);
+    RTTI_ASSERT(f.template target<FuncType>() == 0);
+    // Copy function with allocator
+    std::function<FuncType> f2(std::allocator_arg, alloc, f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.template target<FuncType*>());
+    RTTI_ASSERT(*f2.template target<FuncType*>() == target);
+    RTTI_ASSERT(f2.template target<FuncType>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class TargetType, class FuncType, class AllocType>
+void test_MemFunClass(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    // Construct function from function pointer.
+    TargetType target = &MemFunClass::foo;
+    std::function<FuncType> f = target;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.template target<TargetType>());
+    RTTI_ASSERT(*f.template target<TargetType>() == target);
+    RTTI_ASSERT(f.template target<FuncType*>() == 0);
+    // Copy function with allocator
+    std::function<FuncType> f2(std::allocator_arg, alloc, f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.template target<TargetType>());
+    RTTI_ASSERT(*f2.template target<TargetType>() == target);
+    RTTI_ASSERT(f2.template target<FuncType*>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class Alloc>
+void test_for_alloc(Alloc& alloc)
+{
+    // Large FunctionObject -- Allocation should occur
+    test_FunctionObject<int()>(alloc);
+    test_FunctionObject<int(int)>(alloc);
+    test_FunctionObject<int(int, int)>(alloc);
+    test_FunctionObject<int(int, int, int)>(alloc);
+    // Free function -- No allocation should occur
+    test_FreeFunction<int()>(alloc);
+    test_FreeFunction<int(int)>(alloc);
+    test_FreeFunction<int(int, int)>(alloc);
+    test_FreeFunction<int(int, int, int)>(alloc);
+    // Member function -- No allocation should occur.
+    test_MemFunClass<int(MemFunClass::*)() const, int(MemFunClass&)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int) const, int(MemFunClass&, int)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int, int) const, int(MemFunClass&, int, int)>(alloc);
+}
+
+int main(int, char**)
+{
+  globalMemCounter.reset();
+  {
+    bare_allocator<DummyClass> alloc;
+    test_for_alloc(alloc);
+  }
+  {
+    non_default_test_allocator<DummyClass> alloc(42);
+    test_for_alloc(alloc);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp
new file mode 100644
index 0000000..4263eee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, const function&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::function<void(int)> F;
+    F f1;
+    F f2(std::allocator_arg, std::allocator<int>(), f1); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.pass.cpp
new file mode 100644
index 0000000..65bda95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, nullptr_t);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(std::allocator_arg, bare_allocator<int>(), nullptr);
+    assert(!f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.verify.cpp
new file mode 100644
index 0000000..6e9a6c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.verify.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, nullptr_t);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(std::allocator_arg, std::allocator<int>(), nullptr); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.pass.cpp
new file mode 100644
index 0000000..7ccb678
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: c++11 || c++14
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, function&&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "count_new.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+};
+
+int A::count = 0;
+
+int g(int) { return 0; }
+
+int main(int, char**)
+{
+  globalMemCounter.reset();
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    std::function<int(int)> f2(std::allocator_arg, bare_allocator<A>(),
+                               std::move(f));
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+  }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        // Test that moving a function constructed from a reference wrapper
+        // is done without allocating.
+        DisableAllocationGuard g;
+        using Ref = std::reference_wrapper<A>;
+        A a;
+        Ref aref(a);
+        std::function<int(int)> f(aref);
+        assert(A::count == 1);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ref>());
+        std::function<int(int)> f2(std::allocator_arg, std::allocator<int>{},
+                                   std::move(f));
+        assert(A::count == 1);
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ref>());
+        RTTI_ASSERT(f.target<Ref>()); // f is unchanged because the target is small
+    }
+    {
+        // Test that moving a function constructed from a function pointer
+        // is done without allocating
+        DisableAllocationGuard guard;
+        using Ptr = int(*)(int);
+        Ptr p = g;
+        std::function<int(int)> f(p);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ptr>());
+        std::function<int(int)> f2(std::allocator_arg, std::allocator<int>(),
+                                   std::move(f));
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ptr>());
+        RTTI_ASSERT(f.target<Ptr>()); // f is unchanged because the target is small
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.verify.cpp
new file mode 100644
index 0000000..b04b958
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.verify.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, function&&);
+//
+// This signature was removed in C++17
+
+#include <cassert>
+#include <functional>
+#include <memory>
+#include <utility>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+};
+
+int A::count = 0;
+
+int g(int) { return 0; }
+
+int main(int, char**)
+{
+    std::function<int(int)> f = A();
+    std::function<int(int)> f2(std::allocator_arg, std::allocator<A>(), std::move(f)); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_assign.pass.cpp
new file mode 100644
index 0000000..75eaa55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_assign.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function& operator=(const function& f);
+
+#include <cassert>
+#include <functional>
+#include <utility>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+class A {
+  int data_[10];
+
+public:
+  static int count;
+
+  A() {
+    ++count;
+    for (int i = 0; i < 10; ++i)
+      data_[i] = i;
+  }
+
+  A(const A &) { ++count; }
+
+  ~A() { --count; }
+
+  int operator()(int i) const {
+    for (int j = 0; j < 10; ++j)
+      i += data_[j];
+    return i;
+  }
+};
+
+int A::count = 0;
+
+int g0() { return 0; }
+int g(int) { return 0; }
+int g2(int, int) { return 2; }
+int g3(int, int, int) { return 3; }
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    std::function<int(int)> f2;
+    f2 = f;
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2;
+    f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int (*)(int)>());
+    RTTI_ASSERT(f2.target<A>() == 0);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2;
+    f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f2.target<A>() == 0);
+  }
+  {
+    typedef std::function<int()> Func;
+    Func f = g0;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)()>() == g0);
+  }
+  {
+    typedef std::function<int(int)> Func;
+    Func f = g;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)(int)>() == g);
+  }
+  {
+    typedef std::function<int(int, int)> Func;
+    Func f = g2;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)(int, int)>() == g2);
+  }
+  {
+    typedef std::function<int(int, int, int)> Func;
+    Func f = g3;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)(int, int, int)>() == g3);
+  }
+#if TEST_STD_VER >= 11
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    std::function<int(int)> f2;
+    f2 = std::move(f);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_move.pass.cpp
new file mode 100644
index 0000000..6ad6e2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_move.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FIXME: In MSVC mode, even "std::function<int(int)> f(aref);" causes
+// allocations.
+// XFAIL: target=x86_64-pc-windows-msvc && stdlib=libc++
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(const function&  f);
+// function(function&& f); // noexcept in C++20
+
+#include <functional>
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    std::function<int(int)> f2 = f;
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int(*)(int)>());
+    RTTI_ASSERT(f2.target<A>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f2.target<A>() == 0);
+    }
+    {
+    std::function<int(int)> f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    assert(!f);
+    std::function<long(int)> g = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(g.target<long(*)(int)>() == 0);
+    RTTI_ASSERT(g.target<A>() == 0);
+    assert(!g);
+    }
+#if TEST_STD_VER >= 11
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    { // Test rvalue references
+        std::function<int(int)> f = A();
+        assert(A::count == 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+        RTTI_ASSERT(f.target<A>());
+        RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+        LIBCPP_ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#if TEST_STD_VER > 17
+        ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#endif
+        std::function<int(int)> f2 = std::move(f);
+        assert(A::count == 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+        RTTI_ASSERT(f2.target<A>());
+        RTTI_ASSERT(f2.target<int(*)(int)>() == 0);
+        RTTI_ASSERT(f.target<A>() == 0);
+        RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        // Test that moving a function constructed from a reference wrapper
+        // is done without allocating.
+        DisableAllocationGuard g;
+        using Ref = std::reference_wrapper<A>;
+        A a;
+        Ref aref(a);
+        std::function<int(int)> f(aref);
+        assert(A::count == 1);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ref>());
+        LIBCPP_ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#if TEST_STD_VER > 17
+        ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#endif
+        std::function<int(int)> f2(std::move(f));
+        assert(A::count == 1);
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ref>());
+#if defined(_LIBCPP_VERSION)
+        RTTI_ASSERT(f.target<Ref>()); // f is unchanged because the target is small
+#endif
+    }
+    {
+        // Test that moving a function constructed from a function pointer
+        // is done without allocating
+        DisableAllocationGuard guard;
+        using Ptr = int(*)(int);
+        Ptr p = g;
+        std::function<int(int)> f(p);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ptr>());
+        LIBCPP_ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#if TEST_STD_VER > 17
+        ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#endif
+        std::function<int(int)> f2(std::move(f));
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ptr>());
+#if defined(_LIBCPP_VERSION)
+        RTTI_ASSERT(f.target<Ptr>()); // f is unchanged because the target is small
+#endif
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp
new file mode 100644
index 0000000..df7de4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/ctad.static.compile.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// XFAIL: clang-14, clang-15, gcc-12, apple-clang-14
+
+// checks that CTAD for std::function works properly with static operator() overloads
+
+#include <functional>
+#include <type_traits>
+
+struct Except0 {
+  static void operator()() {}
+};
+static_assert(std::is_same_v<decltype(std::function{Except0{}}), std::function<void()>>);
+
+struct Except1 {
+  static int operator()(int&) { return 0; }
+};
+static_assert(std::is_same_v<decltype(std::function{Except1{}}), std::function<int(int&)>>);
+
+struct Except2 {
+  static int operator()(int*, long*) { return 0; }
+};
+static_assert(std::is_same_v<decltype(std::function{Except2{}}), std::function<int(int*, long*)>>);
+
+struct ExceptD {
+  static int operator()(int*, long* = nullptr) { return 0; }
+};
+static_assert(std::is_same_v<decltype(std::function{ExceptD{}}), std::function<int(int*, long*)>>);
+
+struct Noexcept {
+  static int operator()(int*, long*) noexcept { return 0; }
+};
+
+static_assert(std::is_same_v<decltype(std::function{Noexcept{}}), std::function<int(int*, long*)>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.pass.cpp
new file mode 100644
index 0000000..00d1831
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.pass.cpp
@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<class F>
+// function(F) -> function<see-below>;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct R { };
+struct A1 { };
+struct A2 { };
+struct A3 { };
+
+#define DECLARE_FUNCTIONS_WITH_QUALS(N, ...)                              \
+  struct f0_##N  { R operator()() __VA_ARGS__           { return {}; } }; \
+  struct f1_##N  { R operator()(A1) __VA_ARGS__         { return {}; } }; \
+  struct f2_##N  { R operator()(A1, A2) __VA_ARGS__     { return {}; } }; \
+  struct f3_##N  { R operator()(A1, A2, A3) __VA_ARGS__ { return {}; } }  \
+/**/
+
+DECLARE_FUNCTIONS_WITH_QUALS(0, /* nothing */);
+DECLARE_FUNCTIONS_WITH_QUALS(1, const);
+DECLARE_FUNCTIONS_WITH_QUALS(2, volatile);
+DECLARE_FUNCTIONS_WITH_QUALS(3, const volatile);
+DECLARE_FUNCTIONS_WITH_QUALS(4, &);
+DECLARE_FUNCTIONS_WITH_QUALS(5 , const &);
+DECLARE_FUNCTIONS_WITH_QUALS(6 , volatile &);
+DECLARE_FUNCTIONS_WITH_QUALS(7 , const volatile &);
+DECLARE_FUNCTIONS_WITH_QUALS(8 , noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(9 , const noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(10, volatile noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(11, const volatile noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(12, & noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(13, const & noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(14, volatile & noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(15, const volatile & noexcept);
+
+int main(int, char**) {
+#define CHECK_FUNCTIONS(N)                                                    \
+  do {                                                                        \
+    /* implicit */                                                            \
+    std::function g0 = f0_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g0), std::function<R()>);                       \
+                                                                              \
+    std::function g1 = f1_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g1), std::function<R(A1)>);                     \
+                                                                              \
+    std::function g2 = f2_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g2), std::function<R(A1, A2)>);                 \
+                                                                              \
+    std::function g3 = f3_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g3), std::function<R(A1, A2, A3)>);             \
+                                                                              \
+    /* explicit */                                                            \
+    std::function g4{f0_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g4), std::function<R()>);                       \
+                                                                              \
+    std::function g5{f1_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g5), std::function<R(A1)>);                     \
+                                                                              \
+    std::function g6{f2_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g6), std::function<R(A1, A2)>);                 \
+                                                                              \
+    std::function g7{f3_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g7), std::function<R(A1, A2, A3)>);             \
+                                                                              \
+    /* from std::function */                                                  \
+    std::function<R(A1)> unary;                                               \
+    std::function g8 = unary;                                                 \
+    ASSERT_SAME_TYPE(decltype(g8), std::function<R(A1)>);                     \
+                                                                              \
+    std::function g9 = std::move(unary);                                      \
+    ASSERT_SAME_TYPE(decltype(g9), std::function<R(A1)>);                     \
+                                                                              \
+    std::function<R(A1&&)> unary_ref;                                         \
+    std::function g10 = unary_ref;                                            \
+    ASSERT_SAME_TYPE(decltype(g10), std::function<R(A1&&)>);                  \
+                                                                              \
+    std::function g11 = std::move(unary_ref);                                 \
+    ASSERT_SAME_TYPE(decltype(g11), std::function<R(A1&&)>);                  \
+  } while (false)                                                             \
+/**/
+
+  // Make sure we can deduce from function objects with valid call operators
+  CHECK_FUNCTIONS(0);
+  CHECK_FUNCTIONS(1);
+  CHECK_FUNCTIONS(2);
+  CHECK_FUNCTIONS(3);
+  CHECK_FUNCTIONS(4);
+  CHECK_FUNCTIONS(5);
+  CHECK_FUNCTIONS(6);
+  CHECK_FUNCTIONS(7);
+  CHECK_FUNCTIONS(8);
+  CHECK_FUNCTIONS(9);
+  CHECK_FUNCTIONS(10);
+  CHECK_FUNCTIONS(11);
+  CHECK_FUNCTIONS(12);
+  CHECK_FUNCTIONS(13);
+  CHECK_FUNCTIONS(14);
+  CHECK_FUNCTIONS(15);
+
+  return 0;
+}
+
+// Make sure we fail in a SFINAE-friendly manner when we try to deduce
+// from a type without a valid call operator.
+template <typename F, typename = decltype(std::function{std::declval<F>()})>
+constexpr bool can_deduce() { return true; }
+template <typename F>
+constexpr bool can_deduce(...) { return false; }
+
+struct invalid1 { };
+struct invalid2 {
+  template <typename ...Args>
+  void operator()(Args ...);
+};
+struct invalid3 {
+  void operator()(int);
+  void operator()(long);
+};
+static_assert(!can_deduce<invalid1>());
+static_assert(!can_deduce<invalid2>());
+static_assert(!can_deduce<invalid3>());
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.verify.cpp
new file mode 100644
index 0000000..cc20a01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.verify.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<class F>
+// function(F) -> function<see-below>;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// The deduction guides for std::function do not handle rvalue-ref qualified
+// call operators and C-style variadics. It also doesn't deduce from nullptr_t.
+// Make sure we stick to the specification.
+
+#include <functional>
+#include <type_traits>
+
+struct R { };
+struct f0 { R operator()() && { return {}; } };
+struct f1 { R operator()(int, ...) { return {}; } };
+
+int main(int, char**) {
+    std::function f = f0{}; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'function'}}
+    std::function g = f1{}; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'function'}}
+    std::function h = nullptr; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'function'}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_ptr.pass.cpp
new file mode 100644
index 0000000..cc61a75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_ptr.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<class R, class ...Args>
+// function(R(*)(Args...)) -> function<R(Args...)>;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct R { };
+struct A1 { };
+struct A2 { };
+struct A3 { };
+
+R f0() { return {}; }
+R f1(A1) { return {}; }
+R f2(A1, A2) { return {}; }
+R f3(A1, A2, A3) { return {}; }
+R f4(A1 = {}) { return {}; }
+
+int main(int, char**) {
+  {
+    // implicit
+    std::function a = f0;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R()>);
+
+    std::function b = &f0;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R()>);
+
+    // explicit
+    std::function c{f0};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R()>);
+
+    std::function d{&f0};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R()>);
+  }
+  {
+    // implicit
+    std::function a = f1;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1)>);
+
+    std::function b = &f1;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1)>);
+
+    // explicit
+    std::function c{f1};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1)>);
+
+    std::function d{&f1};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1)>);
+  }
+  {
+    // implicit
+    std::function a = f2;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1, A2)>);
+
+    std::function b = &f2;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1, A2)>);
+
+    // explicit
+    std::function c{f2};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1, A2)>);
+
+    std::function d{&f2};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1, A2)>);
+  }
+  {
+    // implicit
+    std::function a = f3;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1, A2, A3)>);
+
+    std::function b = &f3;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1, A2, A3)>);
+
+    // explicit
+    std::function c{f3};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1, A2, A3)>);
+
+    std::function d{&f3};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1, A2, A3)>);
+  }
+  // Make sure defaulted arguments don't mess up the deduction
+  {
+    // implicit
+    std::function a = f4;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1)>);
+
+    std::function b = &f4;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1)>);
+
+    // explicit
+    std::function c{f4};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1)>);
+
+    std::function d{&f4};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1)>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/default.pass.cpp
new file mode 100644
index 0000000..9b99a7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function();
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f;
+    assert(!f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t.pass.cpp
new file mode 100644
index 0000000..1cdafc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(nullptr_t);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(nullptr);
+    assert(!f);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign.pass.cpp
new file mode 100644
index 0000000..391e2a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function& operator=(nullptr_t);
+
+#include <functional>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    f = nullptr;
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    f = nullptr;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.pass.cpp
new file mode 100644
index 0000000..241b1f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.pass.cpp
@@ -0,0 +1,434 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// R operator()(ArgTypes... args) const
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+// Address Sanitizer doesn't instrument weak symbols on Linux. When a key
+// function is defined for bad_function_call's vtable, its typeinfo and vtable
+// will be defined as strong symbols in the library and weak symbols in other
+// translation units. Only the strong symbol will be instrumented, increasing
+// its size (due to the redzone) and leading to a serious ODR violation
+// resulting in a crash.
+// Some relevant bugs:
+// https://github.com/google/sanitizers/issues/1017
+// https://github.com/google/sanitizers/issues/619
+// https://github.com/google/sanitizers/issues/398
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016
+// UNSUPPORTED: asan
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int count = 0;
+
+
+// 0 args, return int
+
+int f_int_0()
+{
+    return 3;
+}
+
+struct A_int_0
+{
+    int operator()() {return 4;}
+};
+
+void test_int_0()
+{
+    // function
+    {
+        std::function<int ()> r1(f_int_0);
+        assert(r1() == 3);
+    }
+    // function pointer
+    {
+        int (*fp)() = f_int_0;
+        std::function<int ()> r1(fp);
+        assert(r1() == 3);
+    }
+    // functor
+    {
+        A_int_0 a0;
+        std::function<int ()> r1(a0);
+        assert(r1() == 4);
+    }
+}
+
+
+// 0 args, return void
+
+void f_void_0()
+{
+    ++count;
+}
+
+struct A_void_0
+{
+    void operator()() {++count;}
+};
+
+void
+test_void_0()
+{
+    int save_count = count;
+    // function
+    {
+        std::function<void ()> r1(f_void_0);
+        r1();
+        assert(count == save_count+1);
+        save_count = count;
+    }
+    // function pointer
+    {
+        void (*fp)() = f_void_0;
+        std::function<void ()> r1(fp);
+        r1();
+        assert(count == save_count+1);
+        save_count = count;
+    }
+    // functor
+    {
+        A_void_0 a0;
+        std::function<void ()> r1(a0);
+        r1();
+        assert(count == save_count+1);
+        save_count = count;
+    }
+}
+
+// 1 arg, return void
+
+void f_void_1(int i)
+{
+    count += i;
+}
+
+struct A_void_1
+{
+    void operator()(int i)
+    {
+        count += i;
+    }
+
+    void mem1() {++count;}
+    void mem2() const {++count;}
+};
+
+void
+test_void_1()
+{
+    int save_count = count;
+    // function
+    {
+        std::function<void (int)> r1(f_void_1);
+        int i = 2;
+        r1(i);
+        assert(count == save_count+2);
+        save_count = count;
+    }
+    // function pointer
+    {
+        void (*fp)(int) = f_void_1;
+        std::function<void (int)> r1(fp);
+        int i = 3;
+        r1(i);
+        assert(count == save_count+3);
+        save_count = count;
+    }
+    // functor
+    {
+        A_void_1 a0;
+        std::function<void (int)> r1(a0);
+        int i = 4;
+        r1(i);
+        assert(count == save_count+4);
+        save_count = count;
+    }
+    // member function pointer
+    {
+        void (A_void_1::*fp)() = &A_void_1::mem1;
+        std::function<void (A_void_1)> r1(fp);
+        A_void_1 a;
+        r1(a);
+        assert(count == save_count+1);
+        save_count = count;
+        A_void_1* ap = &a;
+        std::function<void (A_void_1*)> r2 = fp;
+        r2(ap);
+        assert(count == save_count+1);
+        save_count = count;
+    }
+    // const member function pointer
+    {
+        void (A_void_1::*fp)() const = &A_void_1::mem2;
+        std::function<void (A_void_1)> r1(fp);
+        A_void_1 a;
+        r1(a);
+        assert(count == save_count+1);
+        save_count = count;
+        std::function<void (A_void_1*)> r2(fp);
+        A_void_1* ap = &a;
+        r2(ap);
+        assert(count == save_count+1);
+        save_count = count;
+    }
+}
+
+// 1 arg, return int
+
+int f_int_1(int i)
+{
+    return i + 1;
+}
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+    int operator()(int i)
+    {
+        return i - 1;
+    }
+
+    int mem1() {return 3;}
+    int mem2() const {return 4;}
+    int data_;
+};
+
+void
+test_int_1()
+{
+    // function
+    {
+        std::function<int (int)> r1(f_int_1);
+        int i = 2;
+        assert(r1(i) == 3);
+    }
+    // function pointer
+    {
+        int (*fp)(int) = f_int_1;
+        std::function<int (int)> r1(fp);
+        int i = 3;
+        assert(r1(i) == 4);
+    }
+    // functor
+    {
+        A_int_1 a0;
+        std::function<int (int)> r1(a0);
+        int i = 4;
+        assert(r1(i) == 3);
+    }
+    // member function pointer
+    {
+        int (A_int_1::*fp)() = &A_int_1::mem1;
+        std::function<int (A_int_1)> r1(fp);
+        A_int_1 a;
+        assert(r1(a) == 3);
+        std::function<int (A_int_1*)> r2(fp);
+        A_int_1* ap = &a;
+        assert(r2(ap) == 3);
+    }
+    // const member function pointer
+    {
+        int (A_int_1::*fp)() const = &A_int_1::mem2;
+        std::function<int (A_int_1)> r1(fp);
+        A_int_1 a;
+        assert(r1(a) == 4);
+        std::function<int (A_int_1*)> r2(fp);
+        A_int_1* ap = &a;
+        assert(r2(ap) == 4);
+    }
+    // member data pointer
+    {
+        int A_int_1::*fp = &A_int_1::data_;
+        std::function<int& (A_int_1&)> r1(fp);
+        A_int_1 a;
+        assert(r1(a) == 5);
+        r1(a) = 6;
+        assert(r1(a) == 6);
+        std::function<int& (A_int_1*)> r2(fp);
+        A_int_1* ap = &a;
+        assert(r2(ap) == 6);
+        r2(ap) = 7;
+        assert(r2(ap) == 7);
+    }
+}
+
+// 2 arg, return void
+
+void f_void_2(int i, int j)
+{
+    count += i+j;
+}
+
+struct A_void_2
+{
+    void operator()(int i, int j)
+    {
+        count += i+j;
+    }
+
+    void mem1(int i) {count += i;}
+    void mem2(int i) const {count += i;}
+};
+
+void
+test_void_2()
+{
+    int save_count = count;
+    // function
+    {
+        std::function<void (int, int)> r1(f_void_2);
+        int i = 2;
+        int j = 3;
+        r1(i, j);
+        assert(count == save_count+5);
+        save_count = count;
+    }
+    // function pointer
+    {
+        void (*fp)(int, int) = f_void_2;
+        std::function<void (int, int)> r1(fp);
+        int i = 3;
+        int j = 4;
+        r1(i, j);
+        assert(count == save_count+7);
+        save_count = count;
+    }
+    // functor
+    {
+        A_void_2 a0;
+        std::function<void (int, int)> r1(a0);
+        int i = 4;
+        int j = 5;
+        r1(i, j);
+        assert(count == save_count+9);
+        save_count = count;
+    }
+    // member function pointer
+    {
+        void (A_void_2::*fp)(int) = &A_void_2::mem1;
+        std::function<void (A_void_2, int)> r1(fp);
+        A_void_2 a;
+        int i = 3;
+        r1(a, i);
+        assert(count == save_count+3);
+        save_count = count;
+        std::function<void (A_void_2*, int)> r2(fp);
+        A_void_2* ap = &a;
+        r2(ap, i);
+        assert(count == save_count+3);
+        save_count = count;
+    }
+    // const member function pointer
+    {
+        void (A_void_2::*fp)(int) const = &A_void_2::mem2;
+        std::function<void (A_void_2, int)> r1(fp);
+        A_void_2 a;
+        int i = 4;
+        r1(a, i);
+        assert(count == save_count+4);
+        save_count = count;
+        std::function<void (A_void_2*, int)> r2(fp);
+        A_void_2* ap = &a;
+        r2(ap, i);
+        assert(count == save_count+4);
+        save_count = count;
+    }
+}
+
+// 2 arg, return int
+
+int f_int_2(int i, int j)
+{
+    return i+j;
+}
+
+struct A_int_2
+{
+    int operator()(int i, int j)
+    {
+        return i+j;
+    }
+
+    int mem1(int i) {return i+1;}
+    int mem2(int i) const {return i+2;}
+};
+
+void test_int_2()
+{
+    // function
+    {
+        std::function<int (int, int)> r1(f_int_2);
+        int i = 2;
+        int j = 3;
+        assert(r1(i, j) == i+j);
+    }
+    // function pointer
+    {
+        int (*fp)(int, int) = f_int_2;
+        std::function<int (int, int)> r1(fp);
+        int i = 3;
+        int j = 4;
+        assert(r1(i, j) == i+j);
+    }
+    // functor
+    {
+        A_int_2 a0;
+        std::function<int (int, int)> r1(a0);
+        int i = 4;
+        int j = 5;
+        assert(r1(i, j) == i+j);
+    }
+    // member function pointer
+    {
+        int(A_int_2::*fp)(int) = &A_int_2::mem1;
+        std::function<int (A_int_2, int)> r1(fp);
+        A_int_2 a;
+        int i = 3;
+        assert(r1(a, i) == i+1);
+        std::function<int (A_int_2*, int)> r2(fp);
+        A_int_2* ap = &a;
+        assert(r2(ap, i) == i+1);
+    }
+    // const member function pointer
+    {
+        int (A_int_2::*fp)(int) const = &A_int_2::mem2;
+        std::function<int (A_int_2, int)> r1(fp);
+        A_int_2 a;
+        int i = 4;
+        assert(r1(a, i) == i+2);
+        std::function<int (A_int_2*, int)> r2(fp);
+        A_int_2* ap = &a;
+        assert(r2(ap, i) == i+2);
+    }
+}
+
+int main(int, char**)
+{
+    test_void_0();
+    test_int_0();
+    test_void_1();
+    test_int_1();
+    test_void_2();
+    test_int_2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.verify.cpp
new file mode 100644
index 0000000..8287197
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// R operator()(ArgTypes... args) const
+
+#include <functional>
+#include <cassert>
+
+// member data pointer: cv qualifiers should transfer from argument to return type
+
+struct Foo { int data; };
+
+void f() {
+    int Foo::*fp = &Foo::data;
+    std::function<int& (const Foo*)> r2(fp); // expected-error {{no matching constructor for initialization of}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/assign_F_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/assign_F_alloc.pass.cpp
new file mode 100644
index 0000000..c2dd409
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/assign_F_alloc.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class F, class A> void assign(F&&, const A&);
+//     This call was removed post-C++14
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int foo(int) const {return 1;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    {
+    std::function<int(int)> f;
+    f.assign(A(), test_allocator<A>());
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/swap.pass.cpp
new file mode 100644
index 0000000..d51c35e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/swap.pass.cpp
@@ -0,0 +1,199 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// void swap(function& other);
+
+#include <functional>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+class A {
+  int data_[10];
+
+public:
+  static int count;
+
+  explicit A(int j) {
+    ++count;
+    data_[0] = j;
+  }
+
+  A(const A &a) {
+    ++count;
+    for (int i = 0; i < 10; ++i)
+      data_[i] = a.data_[i];
+  }
+
+  ~A() { --count; }
+
+  int operator()(int i) const {
+    for (int j = 0; j < 10; ++j)
+      i += data_[j];
+    return i;
+  }
+
+  int operator()() const { return -1; }
+  int operator()(int, int) const { return -2; }
+  int operator()(int, int, int) const { return -3; }
+
+  int id() const { return data_[0]; }
+};
+
+int A::count = 0;
+
+int g0() { return 0; }
+int g(int) { return 0; }
+int h(int) { return 1; }
+int g2(int, int) { return 2; }
+int g3(int, int, int) { return 3; }
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = A(2);
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(f2.target<A>()->id() == 2);
+    f1.swap(f2);
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 2);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = g;
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == g);
+    f1.swap(f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = A(1);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    f1.swap(f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == g);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = h;
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == g);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == h);
+    f1.swap(f2);
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == h);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == g);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = A(1);
+    assert(A::count == 1);
+    {
+      DisableAllocationGuard guard;
+      ((void)guard);
+      f1.swap(f1);
+    }
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int()> f1 = g0;
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    RTTI_ASSERT(*f1.target<int (*)()>() == g0);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int, int)> f1 = g2;
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    RTTI_ASSERT(*f1.target<int (*)(int, int)>() == g2);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int, int, int)> f1 = g3;
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    RTTI_ASSERT(*f1.target<int (*)(int, int, int)>() == g3);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int()> f1 = A(1);
+    assert(A::count == 1);
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  assert(A::count == 0);
+  {
+    std::function<int(int, int)> f1 = A(2);
+    assert(A::count == 1);
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 2);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  assert(A::count == 0);
+  {
+    std::function<int(int, int, int)> f1 = A(3);
+    assert(A::count == 1);
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 3);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.nullptr/operator_==.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.nullptr/operator_==.pass.cpp
new file mode 100644
index 0000000..f52f77b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.nullptr/operator_==.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template <MoveConstructible R, MoveConstructible ... ArgTypes>
+//   bool operator==(const function<R(ArgTypes...)>&, nullptr_t);
+//
+// template <MoveConstructible R, MoveConstructible ... ArgTypes>
+//   bool operator==(nullptr_t, const function<R(ArgTypes...)>&);
+//
+// template <MoveConstructible R, MoveConstructible ... ArgTypes>
+//   bool operator!=(const function<R(ArgTypes...)>&, nullptr_t);
+//
+// template <MoveConstructible  R, MoveConstructible ... ArgTypes>
+//   bool operator!=(nullptr_t, const function<R(ArgTypes...)>&);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    {
+    std::function<int(int)> f;
+    assert(f == nullptr);
+    assert(nullptr == f);
+    f = g;
+    assert(f != nullptr);
+    assert(nullptr != f);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp
new file mode 100644
index 0000000..240c7fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<typename T>
+//   requires Callable<T, ArgTypes...> && Convertible<Callable<T, ArgTypes...>::result_type, R>
+//   T*
+//   target();
+// template<typename T>
+//   requires Callable<T, ArgTypes...> && Convertible<Callable<T, ArgTypes...>::result_type, R>
+//   const T*
+//   target() const;
+
+// UNSUPPORTED: no-rtti
+
+#include <functional>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int foo(int) const {return 1;}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    assert(f.target<int>() == nullptr);
+    }
+    assert(A::count == 0);
+    {
+    std::function<int(int)> f = g;
+    assert(A::count == 0);
+    assert(f.target<int(*)(int)>());
+    assert(f.target<A>() == 0);
+    assert(f.target<int>() == nullptr);
+    }
+    assert(A::count == 0);
+    {
+    const std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    assert(f.target<int>() == nullptr);
+    }
+    assert(A::count == 0);
+    {
+    const std::function<int(int)> f = g;
+    assert(A::count == 0);
+    assert(f.target<int(*)(int)>());
+    assert(f.target<A>() == 0);
+    assert(f.target<int>() == nullptr);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target_type.pass.cpp
new file mode 100644
index 0000000..f899530
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target_type.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// const std::type_info& target_type() const;
+
+// UNSUPPORTED: no-rtti
+
+#include <functional>
+#include <typeinfo>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int foo(int) const {return 1;}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    {
+    std::function<int(int)> f = A();
+    assert(f.target_type() == typeid(A));
+    }
+    {
+    std::function<int(int)> f;
+    assert(f.target_type() == typeid(void));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/function_types.h b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/function_types.h
new file mode 100644
index 0000000..470a3a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/function_types.h
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef FUNCTION_TYPES_H
+#define FUNCTION_TYPES_H
+
+
+class FunctionObject
+{
+    int data_[10]; // dummy variable to prevent small object optimization in
+                   // std::function
+public:
+    static int count;
+
+    FunctionObject() {
+        ++count;
+        for (int i = 0; i < 10; ++i) data_[i] = i;
+    }
+
+    FunctionObject(const FunctionObject&) {++count;}
+    ~FunctionObject() {--count; ((void)data_); }
+
+    int operator()() const { return 42; }
+    int operator()(int i) const { return i; }
+    int operator()(int i, int) const { return i; }
+    int operator()(int i, int, int) const { return i; }
+};
+
+int FunctionObject::count = 0;
+
+class MemFunClass
+{
+    int data_[10]; // dummy variable to prevent small object optimization in
+                   // std::function
+public:
+    static int count;
+
+    MemFunClass() {
+        ++count;
+        for (int i = 0; i < 10; ++i) data_[i] = 0;
+    }
+
+    MemFunClass(const MemFunClass&) {++count; ((void)data_); }
+
+    ~MemFunClass() {--count;}
+
+    int foo() const { return 42; }
+    int foo(int i) const { return i; }
+    int foo(int i, int) const { return i; }
+    int foo(int i, int, int) const { return i; }
+};
+
+int MemFunClass::count = 0;
+
+int FreeFunction() { return 42; }
+int FreeFunction(int i) {return i;}
+int FreeFunction(int i, int) { return i; }
+int FreeFunction(int i, int, int) { return i; }
+
+#endif // FUNCTION_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/noncopyable_return_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/noncopyable_return_type.pass.cpp
new file mode 100644
index 0000000..911edc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/noncopyable_return_type.pass.cpp
@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// FIXME: Building this in MSVC mode fails when instantiating two cases of
+// std::function that only differ in constness of the return type, with this
+// error:
+// include/c++/v1/__functional/function.h:254:31: error: definition with same mangled name '??0?$__base@$$A6AXXZ@__function@__1@std@@QEAA@XZ' as another definition
+//     _LIBCPP_INLINE_VISIBILITY __base() {}
+// include/c++/v1/__functional/function.h:254:31: note: previous definition is here
+// XFAIL: msvc
+
+// <functional>
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+// Prevent warning on the `const NonCopyable()` function type.
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wignored-qualifiers")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wignored-qualifiers")
+
+struct NonCopyable {
+    NonCopyable() = default;
+    NonCopyable(NonCopyable&&) = delete;
+    friend bool operator==(NonCopyable, NonCopyable) { return true; }
+};
+
+struct LargeLambda {
+    int a[100];
+    NonCopyable operator()() const { return NonCopyable(); }
+    NonCopyable operator()(int) const { return NonCopyable(); }
+    NonCopyable f() const { return NonCopyable(); }
+};
+
+void test()
+{
+    std::function<NonCopyable()> f1a = []() { return NonCopyable(); };
+    std::function<NonCopyable()> f2a = +[]() { return NonCopyable(); };
+    std::function<NonCopyable()> f3a = LargeLambda();
+    std::function<NonCopyable()> f4a = std::ref(f1a);
+    std::function<NonCopyable(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<NonCopyable(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<NonCopyable(int)> f3b = LargeLambda();
+    std::function<NonCopyable(int)> f4b = std::ref(f1b);
+
+    assert(f1a() == f2a());
+    assert(f3a() == f4a());
+    assert(f1b(1) == f2b(1));
+    assert(f3b(1) == f4b(1));
+}
+
+void const_test()
+{
+    std::function<const NonCopyable()> f1a = []() { return NonCopyable(); };
+    std::function<const NonCopyable()> f2a = +[]() { return NonCopyable(); };
+    std::function<const NonCopyable()> f3a = LargeLambda();
+    std::function<const NonCopyable()> f4a = std::ref(f1a);
+    std::function<const NonCopyable(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<const NonCopyable(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<const NonCopyable(int)> f3b = LargeLambda();
+    std::function<const NonCopyable(int)> f4b = std::ref(f1b);
+
+    assert(f1a() == f2a());
+    assert(f3a() == f4a());
+    assert(f1b(1) == f2b(1));
+    assert(f3b(1) == f4b(1));
+}
+
+void void_test()
+{
+    std::function<void()> f1a = []() { return NonCopyable(); };
+    std::function<void()> f2a = +[]() { return NonCopyable(); };
+    std::function<void()> f3a = LargeLambda();
+    std::function<void()> f4a = std::ref(f1a);
+    std::function<void(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<void(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<void(int)> f3b = LargeLambda();
+    std::function<void(int)> f4b = std::ref(f1b);
+}
+
+void const_void_test()
+{
+    std::function<const void()> f1a = []() { return NonCopyable(); };
+    std::function<const void()> f2a = +[]() { return NonCopyable(); };
+    std::function<const void()> f3a = LargeLambda();
+    std::function<const void()> f4a = std::ref(f1a);
+    std::function<const void(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<const void(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<const void(int)> f3b = LargeLambda();
+    std::function<const void(int)> f4b = std::ref(f1b);
+}
+
+void member_pointer_test()
+{
+    std::function<NonCopyable(LargeLambda*)> f1a = &LargeLambda::f;
+    std::function<NonCopyable(LargeLambda&)> f2a = &LargeLambda::f;
+    LargeLambda ll;
+    assert(f1a(&ll) == f2a(ll));
+
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)(), std::function<NonCopyable(LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)(), std::function<NonCopyable(LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(const LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(const LargeLambda&)>>);
+
+    // Verify we have SFINAE against invoking a pointer-to-data-member in a way that would have to copy the NonCopyable.
+    static_assert(!std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable(LargeLambda*)>>);
+    static_assert(!std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable(LargeLambda&)>>);
+    static_assert(!std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable&(const LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable&(LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable&(LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable LargeLambda::*, std::function<const NonCopyable&(const LargeLambda&)>>);
+}
+
+void ctad_test()
+{
+    std::function f1a = []() { return NonCopyable(); };
+    std::function f2a = +[]() { return NonCopyable(); };
+    std::function f1b = [](int) { return NonCopyable(); };
+    std::function f2b = +[](int) { return NonCopyable(); };
+    static_assert(std::is_same_v<decltype(f1a), std::function<NonCopyable()>>);
+    static_assert(std::is_same_v<decltype(f2a), std::function<NonCopyable()>>);
+    static_assert(std::is_same_v<decltype(f1b), std::function<NonCopyable(int)>>);
+    static_assert(std::is_same_v<decltype(f2b), std::function<NonCopyable(int)>>);
+}
+
+int main(int, char**)
+{
+    test();
+    const_test();
+    void_test();
+    const_void_test();
+    member_pointer_test();
+    ctad_test();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..3c0851e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/robust_against_adl.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Address Sanitizer doesn't instrument weak symbols on Linux. When a key
+// function is defined for bad_function_call's vtable, its typeinfo and vtable
+// will be defined as strong symbols in the library and weak symbols in other
+// translation units. Only the strong symbol will be instrumented, increasing
+// its size (due to the redzone) and leading to a serious ODR violation
+// resulting in a crash.
+// Some relevant bugs:
+// https://github.com/google/sanitizers/issues/1017
+// https://github.com/google/sanitizers/issues/619
+// https://github.com/google/sanitizers/issues/398
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016
+// UNSUPPORTED: c++03, asan
+
+// <functional>
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+typedef Holder<Incomplete> *Ptr;
+
+template<class T>
+struct Callable {
+    void operator()() const { }
+};
+
+Ptr no_args() { return nullptr; }
+Ptr one_arg(Ptr p) { return p; }
+Ptr two_args(Ptr p, Ptr) { return p; }
+Ptr three_args(Ptr p, Ptr, Ptr) { return p; }
+Ptr four_args(Ptr p, Ptr, Ptr, Ptr) { return p; }
+
+void one_arg_void(Ptr) { }
+
+int main(int, char**) {
+    Ptr x = nullptr;
+    std::function<Ptr()> f(no_args); f();
+    std::function<Ptr(Ptr)> g(one_arg); g(x);
+    std::function<void(Ptr)> h(one_arg_void); h(x);
+    std::function<void()> i(Callable<Holder<Incomplete>>{});
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/types.pass.cpp
new file mode 100644
index 0000000..45a3d7a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/types.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// template<Returnable R, CopyConstructible... ArgTypes>
+// class function<R(ArgTypes...)> {
+// public:
+//   typedef R result_type;
+//   typedef T1 argument_type;          // iff sizeof...(ArgTypes) == 1 and
+//                                      // the type in ArgTypes is T1
+//   typedef T1 first_argument_type;    // iff sizeof...(ArgTypes) == 2 and
+//                                      // ArgTypes contains T1 and T2
+//   typedef T2 second_argument_type;   // iff sizeof...(ArgTypes) == 2 and
+//                                      // ArgTypes contains T1 and T2
+//  ...
+//  };
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+template <typename T>
+class has_argument_type
+{
+    typedef char yes;
+    typedef long no;
+
+    template <typename C> static yes check( typename C::argument_type * );
+    template <typename C> static no  check(...);
+public:
+    enum { value = sizeof(check<T>(0)) == sizeof(yes) };
+};
+
+template <typename T>
+class has_first_argument_type
+{
+    typedef char yes;
+    typedef long no;
+
+    template <typename C> static yes check( typename C::first_argument_type * );
+    template <typename C> static no  check(...);
+public:
+    enum { value = sizeof(check<T>(0)) == sizeof(yes) };
+};
+
+
+template <typename T>
+class has_second_argument_type
+{
+    typedef char yes;
+    typedef long no;
+
+    template <typename C> static yes check( typename C::second_argument_type *);
+    template <typename C> static no  check(...);
+public:
+    enum { value = sizeof(check<T>(0)) == sizeof(yes) };
+};
+
+template <class F, class return_type>
+void test_nullary_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type, return_type>::value), "" );
+#endif
+    static_assert((!has_argument_type<F>::value), "" );
+    static_assert((!has_first_argument_type<F>::value), "" );
+    static_assert((!has_second_argument_type<F>::value), "" );
+}
+
+template <class F, class return_type, class arg_type>
+void test_unary_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type, return_type>::value), "" );
+    static_assert((std::is_same<typename F::argument_type,  arg_type>::value), "" );
+#endif
+    static_assert((!has_first_argument_type<F>::value), "" );
+    static_assert((!has_second_argument_type<F>::value), "" );
+}
+
+template <class F, class return_type, class arg_type1, class arg_type2>
+void test_binary_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type,        return_type>::value), "" );
+    static_assert((std::is_same<typename F::first_argument_type,  arg_type1>::value), "" );
+    static_assert((std::is_same<typename F::second_argument_type, arg_type2>::value), "" );
+#endif
+    static_assert((!has_argument_type<F>::value), "" );
+}
+
+template <class F, class return_type>
+void test_other_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type, return_type>::value), "" );
+#endif
+    static_assert((!has_argument_type<F>::value), "" );
+    static_assert((!has_first_argument_type<F>::value), "" );
+    static_assert((!has_second_argument_type<F>::value), "" );
+}
+
+int main(int, char**)
+{
+    test_nullary_function<std::function<int()>, int>();
+    test_unary_function  <std::function<double(int)>, double, int>();
+    test_binary_function <std::function<double(int, char)>, double, int, char>();
+    test_other_function  <std::function<double(int, char, double)>, double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp
new file mode 100644
index 0000000..d0c58b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// logical_and
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::logical_and<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(f(36, 36));
+    assert(!f(36, 0));
+    assert(!f(0, 36));
+    assert(!f(0, 0));
+#if TEST_STD_VER > 11
+    typedef std::logical_and<> F2;
+    const F2 f2 = F2();
+    assert( f2(36, 36));
+    assert( f2(36, 36L));
+    assert( f2(36L, 36));
+    assert(!f2(36, 0));
+    assert(!f2(0, 36));
+    assert( f2(36, 36L));
+    assert(!f2(36, 0L));
+    assert(!f2(0, 36L));
+    assert( f2(36L, 36));
+    assert(!f2(36L, 0));
+    assert(!f2(0L, 36));
+
+    constexpr bool foo = std::logical_and<int> () (36, 36);
+    static_assert ( foo, "" );
+
+    constexpr bool bar = std::logical_and<> () (36.0, 36);
+    static_assert ( bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_not.pass.cpp
new file mode 100644
index 0000000..3381015
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_not.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// logical_not
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::logical_not<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<F::argument_type, int>::value), "" );
+    static_assert((std::is_same<F::result_type, bool>::value), "" );
+#endif
+    assert(!f(36));
+    assert(f(0));
+#if TEST_STD_VER > 11
+    typedef std::logical_not<> F2;
+    const F2 f2 = F2();
+    assert(!f2(36));
+    assert( f2(0));
+    assert(!f2(36L));
+    assert( f2(0L));
+
+    constexpr bool foo = std::logical_not<int> () (36);
+    static_assert ( !foo, "" );
+
+    constexpr bool bar = std::logical_not<> () (36);
+    static_assert ( !bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp
new file mode 100644
index 0000000..1388375
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// logical_or
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::logical_or<int> F;
+    const F f = F();
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+#endif
+    assert(f(36, 36));
+    assert(f(36, 0));
+    assert(f(0, 36));
+    assert(!f(0, 0));
+#if TEST_STD_VER > 11
+    typedef std::logical_or<> F2;
+    const F2 f2 = F2();
+    assert( f2(36, 36));
+    assert( f2(36, 36L));
+    assert( f2(36L, 36));
+    assert( f2(36, 0));
+    assert( f2(0, 36));
+    assert( f2(36, 0L));
+    assert( f2(0, 36L));
+    assert(!f2(0, 0));
+    assert(!f2(0, 0L));
+    assert(!f2(0L, 0));
+
+    constexpr bool foo = std::logical_or<int> () (36, 36);
+    static_assert ( foo, "" );
+
+    constexpr bool bar = std::logical_or<> () (36.0, 36);
+    static_assert ( bar, "" );
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/transparent.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/transparent.pass.cpp
new file mode 100644
index 0000000..5d09600
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/logical.operations/transparent.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <functional>
+#include <string>
+
+#include "test_macros.h"
+
+template <class T>
+struct is_transparent
+{
+private:
+    struct two {char lx; char lxx;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::is_transparent* = 0);
+public:
+    static const bool value = sizeof(test<T>(0)) == 1;
+};
+
+
+int main(int, char**)
+{
+    static_assert ( !is_transparent<std::logical_and<int>>::value, "" );
+    static_assert ( !is_transparent<std::logical_and<std::string>>::value, "" );
+    static_assert (  is_transparent<std::logical_and<void>>::value, "" );
+    static_assert (  is_transparent<std::logical_and<>>::value, "" );
+
+    static_assert ( !is_transparent<std::logical_or<int>>::value, "" );
+    static_assert ( !is_transparent<std::logical_or<std::string>>::value, "" );
+    static_assert (  is_transparent<std::logical_or<void>>::value, "" );
+    static_assert (  is_transparent<std::logical_or<>>::value, "" );
+
+    static_assert ( !is_transparent<std::logical_not<int>>::value, "" );
+    static_assert ( !is_transparent<std::logical_not<std::string>>::value, "" );
+    static_assert (  is_transparent<std::logical_not<void>>::value, "" );
+    static_assert (  is_transparent<std::logical_not<>>::value, "" );
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/binary_negate.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/binary_negate.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..1f6e153
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/binary_negate.depr_in_cxx17.verify.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// binary_negate
+//  deprecated in C++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Predicate {
+    typedef int first_argument_type;
+    typedef int second_argument_type;
+    bool operator()(first_argument_type, second_argument_type) const { return true; }
+};
+
+int main(int, char**) {
+    std::binary_negate<Predicate> f((Predicate())); // expected-warning {{'binary_negate<Predicate>' is deprecated}}
+    (void)f;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/binary_negate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/binary_negate.pass.cpp
new file mode 100644
index 0000000..a3c54fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/binary_negate.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// binary_negate
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::binary_negate<std::logical_and<int> > F;
+    const F f = F(std::logical_and<int>());
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
+    assert(!f(36, 36));
+    assert( f(36, 0));
+    assert( f(0, 36));
+    assert( f(0, 0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not1.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not1.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..e807a1e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not1.depr_in_cxx17.verify.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// not1
+//  deprecated in C++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Predicate {
+    typedef int argument_type;
+    bool operator()(argument_type) const { return true; }
+};
+
+int main(int, char**) {
+    std::not1(Predicate()); // expected-warning {{'not1<Predicate>' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not1.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not1.pass.cpp
new file mode 100644
index 0000000..623c6cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not1.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// not1
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::logical_not<int> F;
+    assert(std::not1(F())(36));
+    assert(!std::not1(F())(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not2.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not2.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..7e079f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not2.depr_in_cxx17.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// not2
+//  deprecated in C++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Predicate {
+    typedef int first_argument_type;
+    typedef int second_argument_type;
+    bool operator()(first_argument_type, second_argument_type) const { return true; }
+};
+
+int main(int, char**) {
+    std::not2(Predicate()); // expected-warning {{'not2<Predicate>' is deprecated}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not2.pass.cpp
new file mode 100644
index 0000000..e097f27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/not2.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// not2
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::logical_and<int> F;
+    assert(!std::not2(F())(36, 36));
+    assert( std::not2(F())(36, 0));
+    assert( std::not2(F())(0, 36));
+    assert( std::not2(F())(0, 0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/unary_negate.depr_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/unary_negate.depr_in_cxx17.verify.cpp
new file mode 100644
index 0000000..1cf1629
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/unary_negate.depr_in_cxx17.verify.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// unary_negate
+//  deprecated in C++17
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Predicate {
+    typedef int argument_type;
+    bool operator()(argument_type) const { return true; }
+};
+
+int main(int, char**) {
+    std::unary_negate<Predicate> f((Predicate())); // expected-warning {{'unary_negate<Predicate>' is deprecated}}
+    (void)f;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/unary_negate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/unary_negate.pass.cpp
new file mode 100644
index 0000000..589b17e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/negators/unary_negate.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// unary_negate
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_BINDER_TYPEDEFS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_NEGATORS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::unary_negate<std::logical_not<int> > F;
+    const F f = F(std::logical_not<int>());
+    static_assert((std::is_same<F::argument_type, int>::value), "" );
+    static_assert((std::is_same<F::result_type, bool>::value), "" );
+    assert(f(36));
+    assert(!f(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/operations.implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/operations.implicit_ctad.pass.cpp
new file mode 100644
index 0000000..03c46d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/operations.implicit_ctad.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++98, c++03, c++11, c++14
+
+// <functional>
+
+// Make sure that we can use CTAD with operations in <functional>
+
+#include <functional>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+        std::plus f;
+        ASSERT_SAME_TYPE(decltype(f), std::plus<>);
+    }
+    {
+        std::minus f;
+        ASSERT_SAME_TYPE(decltype(f), std::minus<>);
+    }
+    {
+        std::multiplies f;
+        ASSERT_SAME_TYPE(decltype(f), std::multiplies<>);
+    }
+    {
+        std::divides f;
+        ASSERT_SAME_TYPE(decltype(f), std::divides<>);
+    }
+    {
+        std::modulus f;
+        ASSERT_SAME_TYPE(decltype(f), std::modulus<>);
+    }
+    {
+        std::negate f;
+        ASSERT_SAME_TYPE(decltype(f), std::negate<>);
+    }
+    {
+        std::bit_and f;
+        ASSERT_SAME_TYPE(decltype(f), std::bit_and<>);
+    }
+    {
+        std::bit_not f;
+        ASSERT_SAME_TYPE(decltype(f), std::bit_not<>);
+    }
+    {
+        std::bit_or f;
+        ASSERT_SAME_TYPE(decltype(f), std::bit_or<>);
+    }
+    {
+        std::bit_xor f;
+        ASSERT_SAME_TYPE(decltype(f), std::bit_xor<>);
+    }
+    {
+        std::equal_to f;
+        ASSERT_SAME_TYPE(decltype(f), std::equal_to<>);
+    }
+    {
+        std::not_equal_to f;
+        ASSERT_SAME_TYPE(decltype(f), std::not_equal_to<>);
+    }
+    {
+        std::less f;
+        ASSERT_SAME_TYPE(decltype(f), std::less<>);
+    }
+    {
+        std::less_equal f;
+        ASSERT_SAME_TYPE(decltype(f), std::less_equal<>);
+    }
+    {
+        std::greater_equal f;
+        ASSERT_SAME_TYPE(decltype(f), std::greater_equal<>);
+    }
+    {
+        std::greater f;
+        ASSERT_SAME_TYPE(decltype(f), std::greater<>);
+    }
+    {
+        std::logical_and f;
+        ASSERT_SAME_TYPE(decltype(f), std::logical_and<>);
+    }
+    {
+        std::logical_not f;
+        ASSERT_SAME_TYPE(decltype(f), std::logical_not<>);
+    }
+    {
+        std::logical_or f;
+        ASSERT_SAME_TYPE(decltype(f), std::logical_or<>);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/equal_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/equal_to.pass.cpp
new file mode 100644
index 0000000..6d20754
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/equal_to.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ranges::equal_to
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "compare_types.h"
+#include "MoveOnly.h"
+#include "pointer_comparison_test_helper.h"
+
+struct NotEqualityComparable {
+  friend bool operator==(const NotEqualityComparable&, const NotEqualityComparable&);
+  friend bool operator!=(const NotEqualityComparable&, const NotEqualityComparable&) = delete;
+};
+
+static_assert(!std::is_invocable_v<std::ranges::equal_to, NotEqualityComparable, NotEqualityComparable>);
+static_assert(!std::is_invocable_v<std::ranges::equal_to, int, MoveOnly>);
+static_assert(std::is_invocable_v<std::ranges::equal_to, explicit_operators, explicit_operators>);
+
+static_assert(requires { typename std::ranges::equal_to::is_transparent; });
+
+constexpr bool test() {
+  auto fn = std::ranges::equal_to();
+
+  assert(fn(MoveOnly(42), MoveOnly(42)));
+
+  ForwardingTestObject a;
+  ForwardingTestObject b;
+  assert(!fn(a, b));
+  assert(fn(std::move(a), std::move(b)));
+
+  assert(!fn(1, 2));
+  assert(!fn(2, 1));
+  assert(fn(2, 2));
+
+  assert(!fn(2, 1L));
+
+  return true;
+}
+
+int main(int, char**) {
+
+  test();
+  static_assert(test());
+
+  // test total ordering of int* for equal_to<int*> and equal_to<void>.
+  do_pointer_comparison_test(std::ranges::equal_to());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/greater.pass.cpp
new file mode 100644
index 0000000..002ec10
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/greater.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ranges::greater
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "compare_types.h"
+#include "MoveOnly.h"
+#include "pointer_comparison_test_helper.h"
+
+struct NotTotallyOrdered {
+  friend bool operator<(const NotTotallyOrdered&, const NotTotallyOrdered&);
+};
+
+static_assert(!std::is_invocable_v<std::ranges::greater, NotTotallyOrdered, NotTotallyOrdered>);
+static_assert(!std::is_invocable_v<std::ranges::greater, int, MoveOnly>);
+static_assert(std::is_invocable_v<std::ranges::greater, explicit_operators, explicit_operators>);
+
+static_assert(requires { typename std::ranges::greater::is_transparent; });
+
+constexpr bool test() {
+  auto fn = std::ranges::greater();
+
+  assert(fn(MoveOnly(42), MoveOnly(41)));
+
+  ForwardingTestObject a;
+  ForwardingTestObject b;
+  assert(!fn(a, b));
+  assert(fn(std::move(a), std::move(b)));
+
+  assert(!fn(2, 2));
+  assert(!fn(1, 2));
+  assert(fn(2, 1));
+
+  assert(fn(2, 1L));
+
+  return true;
+}
+
+int main(int, char**) {
+
+  test();
+  static_assert(test());
+
+  // test total ordering of int* for greater<int*> and greater<void>.
+  do_pointer_comparison_test(std::ranges::greater());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/greater_equal.pass.cpp
new file mode 100644
index 0000000..ad24a98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/greater_equal.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ranges::greater_equal
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "compare_types.h"
+#include "MoveOnly.h"
+#include "pointer_comparison_test_helper.h"
+
+struct NotTotallyOrdered {
+  friend bool operator<(const NotTotallyOrdered&, const NotTotallyOrdered&);
+};
+
+static_assert(!std::is_invocable_v<std::ranges::greater_equal, NotTotallyOrdered, NotTotallyOrdered>);
+static_assert(!std::is_invocable_v<std::ranges::greater_equal, int, MoveOnly>);
+static_assert(std::is_invocable_v<std::ranges::greater_equal, explicit_operators, explicit_operators>);
+
+static_assert(requires { typename std::ranges::greater_equal::is_transparent; });
+
+constexpr bool test() {
+  auto fn = std::ranges::greater_equal();
+
+  assert(fn(MoveOnly(42), MoveOnly(42)));
+
+  ForwardingTestObject a;
+  ForwardingTestObject b;
+  assert(fn(a, b));
+  assert(!fn(std::move(a), std::move(b)));
+
+  assert(fn(2, 2));
+  assert(fn(2, 1));
+  assert(!fn(1, 2));
+
+  assert(fn(2, 1L));
+
+  return true;
+}
+
+int main(int, char**) {
+
+  test();
+  static_assert(test());
+
+  // test total ordering of int* for greater_equal<int*> and greater_equal<void>.
+  do_pointer_comparison_test(std::ranges::greater_equal());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/less.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/less.pass.cpp
new file mode 100644
index 0000000..5afb7e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/less.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ranges::less
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "compare_types.h"
+#include "MoveOnly.h"
+#include "pointer_comparison_test_helper.h"
+
+struct NotTotallyOrdered {
+  friend bool operator<(const NotTotallyOrdered&, const NotTotallyOrdered&);
+};
+
+static_assert(!std::is_invocable_v<std::ranges::less, NotTotallyOrdered, NotTotallyOrdered>);
+static_assert(!std::is_invocable_v<std::ranges::less, int, MoveOnly>);
+static_assert(std::is_invocable_v<std::ranges::less, explicit_operators, explicit_operators>);
+
+static_assert(requires { typename std::ranges::less::is_transparent; });
+
+constexpr bool test() {
+  auto fn = std::ranges::less();
+
+  assert(fn(MoveOnly(41), MoveOnly(42)));
+
+  ForwardingTestObject a;
+  ForwardingTestObject b;
+  assert(!fn(a, b));
+  assert(fn(std::move(a), std::move(b)));
+
+  assert(fn(1, 2));
+  assert(!fn(2, 2));
+  assert(!fn(2, 1));
+
+  assert(!fn(2, 1L));
+
+  return true;
+}
+
+int main(int, char**) {
+
+  test();
+  static_assert(test());
+
+  // test total ordering of int* for less<int*> and less<void>.
+  do_pointer_comparison_test(std::ranges::less());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/less_equal.pass.cpp
new file mode 100644
index 0000000..3aa903f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/less_equal.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ranges::less_equal
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "compare_types.h"
+#include "MoveOnly.h"
+#include "pointer_comparison_test_helper.h"
+
+struct NotTotallyOrdered {
+  friend bool operator<(const NotTotallyOrdered&, const NotTotallyOrdered&);
+};
+
+static_assert(!std::is_invocable_v<std::ranges::less_equal, NotTotallyOrdered, NotTotallyOrdered>);
+static_assert(!std::is_invocable_v<std::ranges::less_equal, int, MoveOnly>);
+static_assert(std::is_invocable_v<std::ranges::less_equal, explicit_operators, explicit_operators>);
+
+static_assert(requires { typename std::ranges::less_equal::is_transparent; });
+
+constexpr bool test() {
+  auto fn = std::ranges::less_equal();
+
+  assert(fn(MoveOnly(41), MoveOnly(42)));
+
+  // These are the opposite of other tests.
+  ForwardingTestObject a;
+  ForwardingTestObject b;
+  assert(fn(a, b));
+  assert(!fn(std::move(a), std::move(b)));
+
+  assert(fn(1, 2));
+  assert(fn(2, 2));
+  assert(!fn(2, 1));
+
+  assert(!fn(2, 1L));
+
+  return true;
+}
+
+int main(int, char**) {
+
+  test();
+  static_assert(test());
+
+  // test total ordering of int* for less_equal<int*> and less_equal<void>.
+  do_pointer_comparison_test(std::ranges::less_equal());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/not_equal_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/not_equal_to.pass.cpp
new file mode 100644
index 0000000..4b46bae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/range.cmp/not_equal_to.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+
+// ranges::not_equal_to
+
+#include <cassert>
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "compare_types.h"
+#include "MoveOnly.h"
+#include "pointer_comparison_test_helper.h"
+
+struct NotEqualityComparable {
+  friend bool operator==(const NotEqualityComparable&, const NotEqualityComparable&);
+  friend bool operator!=(const NotEqualityComparable&, const NotEqualityComparable&) = delete;
+};
+
+static_assert(!std::is_invocable_v<std::ranges::equal_to, NotEqualityComparable, NotEqualityComparable>);
+static_assert(!std::is_invocable_v<std::ranges::equal_to, int, MoveOnly>);
+static_assert(std::is_invocable_v<std::ranges::equal_to, explicit_operators, explicit_operators>);
+
+static_assert(requires { typename std::ranges::not_equal_to::is_transparent; });
+
+struct PtrAndNotEqOperator {
+  constexpr operator void*() const { return nullptr; }
+  // We *don't* want operator!= to be picked here.
+  friend constexpr bool operator!=(PtrAndNotEqOperator, PtrAndNotEqOperator) { return true; }
+};
+
+constexpr bool test() {
+  auto fn = std::ranges::not_equal_to();
+
+  assert(fn(MoveOnly(41), MoveOnly(42)));
+
+  // These are the opposite of other tests.
+  ForwardingTestObject a;
+  ForwardingTestObject b;
+  assert(fn(a, b));
+  assert(!fn(std::move(a), std::move(b)));
+
+  assert(fn(1, 2));
+  assert(!fn(2, 2));
+  assert(fn(2, 1));
+
+  assert(fn(2, 1L));
+
+  // Make sure that "ranges::equal_to(x, y) == !ranges::not_equal_to(x, y)", even here.
+  assert(!fn(PtrAndNotEqOperator(), PtrAndNotEqOperator()));
+  assert(std::ranges::equal_to()(PtrAndNotEqOperator(), PtrAndNotEqOperator()));
+
+  return true;
+}
+
+int main(int, char**) {
+
+  test();
+  static_assert(test());
+
+  // test total ordering of int* for not_equal_to<int*> and not_equal_to<void>.
+  do_pointer_comparison_test(std::ranges::not_equal_to());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/binder_typedefs.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/binder_typedefs.compile.pass.cpp
new file mode 100644
index 0000000..23fd0a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/binder_typedefs.compile.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03 || c++11 || c++14 || c++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// reference_wrapper
+
+// check that binder typedefs exit
+
+#include <functional>
+#include <type_traits>
+
+struct UnaryFunction
+{
+    typedef long argument_type;
+    typedef char result_type;
+};
+
+struct BinaryFunction
+{
+    typedef int first_argument_type;
+    typedef char second_argument_type;
+    typedef long result_type;
+};
+
+static_assert(std::is_same<std::reference_wrapper<int(UnaryFunction::*)()>::result_type, int>::value, "");
+static_assert(std::is_same<std::reference_wrapper<int(UnaryFunction::*)()>::argument_type, UnaryFunction*>::value, "");
+
+static_assert(std::is_same<std::reference_wrapper<int(BinaryFunction::*)(char)>::result_type, int>::value, "");
+static_assert(std::is_same<std::reference_wrapper<int(BinaryFunction::*)(char)>::first_argument_type, BinaryFunction*>::value, "");
+static_assert(std::is_same<std::reference_wrapper<int(BinaryFunction::*)(char)>::second_argument_type, char>::value, "");
+
+static_assert(std::is_same<std::reference_wrapper<void(*)()>::result_type, void>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.access/conversion.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.access/conversion.pass.cpp
new file mode 100644
index 0000000..3a7121c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.access/conversion.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// operator T& () const;
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+class functor1
+{
+};
+
+template <class T>
+void
+test(T& t)
+{
+    std::reference_wrapper<T> r(t);
+    T& r2 = r;
+    assert(&r2 == &t);
+}
+
+void f() {}
+
+int main(int, char**)
+{
+    void (*fp)() = f;
+    test(fp);
+    test(f);
+    functor1 f1;
+    test(f1);
+    int i = 0;
+    test(i);
+    const int j = 0;
+    test(j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.assign/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.assign/copy_assign.pass.cpp
new file mode 100644
index 0000000..5058a74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.assign/copy_assign.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// reference_wrapper& operator=(const reference_wrapper<T>& x);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+class functor1
+{
+};
+
+struct convertible_to_int_ref {
+    int val = 0;
+    operator int&() { return val; }
+    operator int const&() const { return val; }
+};
+
+template <class T>
+void
+test(T& t)
+{
+    std::reference_wrapper<T> r(t);
+    T t2 = t;
+    std::reference_wrapper<T> r2(t2);
+    r2 = r;
+    assert(&r2.get() == &t);
+}
+
+void f() {}
+void g() {}
+
+void
+test_function()
+{
+    std::reference_wrapper<void ()> r(f);
+    std::reference_wrapper<void ()> r2(g);
+    r2 = r;
+    assert(&r2.get() == &f);
+}
+
+int main(int, char**)
+{
+    void (*fp)() = f;
+    test(fp);
+    test_function();
+    functor1 f1;
+    test(f1);
+    int i = 0;
+    test(i);
+    const int j = 0;
+    test(j);
+
+#if TEST_STD_VER >= 11
+    convertible_to_int_ref convi;
+    test(convi);
+    convertible_to_int_ref const convic;
+    test(convic);
+
+    {
+    using Ref = std::reference_wrapper<int>;
+    static_assert((std::is_assignable<Ref&, int&>::value), "");
+    static_assert((!std::is_assignable<Ref&, int>::value), "");
+    static_assert((!std::is_assignable<Ref&, int&&>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/copy_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/copy_ctor.pass.cpp
new file mode 100644
index 0000000..a20cf8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/copy_ctor.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// reference_wrapper(const reference_wrapper<T>& x);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+class functor1
+{
+};
+
+template <class T>
+void
+test(T& t)
+{
+    std::reference_wrapper<T> r(t);
+    std::reference_wrapper<T> r2 = r;
+    assert(&r2.get() == &t);
+}
+
+void f() {}
+
+int main(int, char**)
+{
+    void (*fp)() = f;
+    test(fp);
+    test(f);
+    functor1 f1;
+    test(f1);
+    int i = 0;
+    test(i);
+    const int j = 0;
+    test(j);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/ctor.incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/ctor.incomplete.pass.cpp
new file mode 100644
index 0000000..757a0d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/ctor.incomplete.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+//
+// reference_wrapper<T>
+//
+//  where T is an incomplete type (since C++20)
+
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+struct Foo;
+
+Foo& get_foo();
+
+void test() {
+    Foo& foo = get_foo();
+    std::reference_wrapper<Foo> ref{foo};
+    assert(&ref.get() == &foo);
+}
+
+struct Foo { };
+
+Foo& get_foo() {
+    static Foo foo;
+    return foo;
+}
+
+int main(int, char**) {
+    test();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/deduct.pass.cpp
new file mode 100644
index 0000000..5f56ca2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/deduct.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <functional>
+
+// template <class T>
+//   reference_wrapper(T&) -> reference_wrapper<T>;
+
+#include <functional>
+
+int main(int, char**) {
+    int i = 0;
+    std::reference_wrapper ri(i);
+    static_assert(std::is_same_v<decltype(ri), std::reference_wrapper<int>>);
+    std::reference_wrapper ri2(ri);
+    static_assert(std::is_same_v<decltype(ri2), std::reference_wrapper<int>>);
+    const int j = 0;
+    std::reference_wrapper rj(j);
+    static_assert(std::is_same_v<decltype(rj), std::reference_wrapper<const int>>);
+    std::reference_wrapper rj2(rj);
+    static_assert(std::is_same_v<decltype(rj2), std::reference_wrapper<const int>>);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_conv_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_conv_ctor.pass.cpp
new file mode 100644
index 0000000..2759b92
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_conv_ctor.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// reference_wrapper
+//
+// template <class U>
+//   reference_wrapper(U&&) noexcept(see below);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct convertible_to_int_ref {
+  int val = 0;
+  operator int&() { return val; }
+  operator int const&() const { return val; }
+};
+
+template <bool IsNothrow>
+struct nothrow_convertible {
+  int val = 0;
+  operator int&() TEST_NOEXCEPT_COND(IsNothrow) { return val; }
+};
+
+struct convertible_from_int {
+  convertible_from_int(int) {}
+};
+
+void meow(std::reference_wrapper<int>) {}
+void meow(convertible_from_int) {}
+
+int main(int, char**)
+{
+  {
+    convertible_to_int_ref t;
+    std::reference_wrapper<convertible_to_int_ref> r(t);
+    assert(&r.get() == &t);
+  }
+  {
+    const convertible_to_int_ref t;
+    std::reference_wrapper<const convertible_to_int_ref> r(t);
+    assert(&r.get() == &t);
+  }
+  {
+    using Ref = std::reference_wrapper<int>;
+    ASSERT_NOEXCEPT(Ref(nothrow_convertible<true>()));
+    ASSERT_NOT_NOEXCEPT(Ref(nothrow_convertible<false>()));
+  }
+  {
+    meow(0);
+  }
+  {
+    extern std::reference_wrapper<int> purr();
+    ASSERT_SAME_TYPE(decltype(true ? purr() : 0), int);
+  }
+#if TEST_STD_VER > 14
+  {
+    int i = 0;
+    std::reference_wrapper ri(i);
+    static_assert((std::is_same<decltype(ri), std::reference_wrapper<int>>::value), "" );
+    const int j = 0;
+    std::reference_wrapper rj(j);
+    static_assert((std::is_same<decltype(rj), std::reference_wrapper<const int>>::value), "" );
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_conv_ctor2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_conv_ctor2.pass.cpp
new file mode 100644
index 0000000..0ef87ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_conv_ctor2.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// reference_wrapper
+//
+// template <class U>
+//   reference_wrapper(U&&);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B {};
+
+struct A1 {
+  mutable B b_;
+  TEST_CONSTEXPR operator B&() const { return b_; }
+};
+
+struct A2 {
+  mutable B b_;
+  TEST_CONSTEXPR operator B&() const TEST_NOEXCEPT { return b_; }
+};
+
+void implicitly_convert(std::reference_wrapper<B>) TEST_NOEXCEPT;
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  {
+    A1 a;
+    ASSERT_NOT_NOEXCEPT(implicitly_convert(a));
+    std::reference_wrapper<B> b1 = a;
+    assert(&b1.get() == &a.b_);
+    ASSERT_NOT_NOEXCEPT(b1 = a);
+    b1 = a;
+    assert(&b1.get() == &a.b_);
+  }
+  {
+    A2 a;
+    ASSERT_NOEXCEPT(implicitly_convert(a));
+    std::reference_wrapper<B> b2 = a;
+    assert(&b2.get() == &a.b_);
+    ASSERT_NOEXCEPT(b2 = a);
+    b2 = a;
+    assert(&b2.get() == &a.b_);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.compile.fail.cpp
new file mode 100644
index 0000000..b979210
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// reference_wrapper(T&&) = delete;
+
+#include <functional>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::reference_wrapper<const int> r(3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.pass.cpp
new file mode 100644
index 0000000..af22734
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// reference_wrapper(T& t);
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+class functor1
+{
+};
+
+template <class T>
+void
+test(T& t)
+{
+    std::reference_wrapper<T> r(t);
+    assert(&r.get() == &t);
+}
+
+void f() {}
+
+int main(int, char**)
+{
+    void (*fp)() = f;
+    test(fp);
+    test(f);
+    functor1 f1;
+    test(f1);
+    int i = 0;
+    test(i);
+    const int j = 0;
+    test(j);
+
+    {
+    using Ref = std::reference_wrapper<int>;
+    static_assert((std::is_constructible<Ref, int&>::value), "");
+    static_assert((!std::is_constructible<Ref, int>::value), "");
+    static_assert((!std::is_constructible<Ref, int&&>::value), "");
+    }
+
+#if TEST_STD_VER >= 11
+    {
+    using Ref = std::reference_wrapper<int>;
+    static_assert((std::is_nothrow_constructible<Ref, int&>::value), "");
+    static_assert((!std::is_nothrow_constructible<Ref, int>::value), "");
+    static_assert((!std::is_nothrow_constructible<Ref, int&&>::value), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref.incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref.incomplete.pass.cpp
new file mode 100644
index 0000000..8ca3651
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref.incomplete.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+//
+// reference_wrapper
+//
+// template <ObjectType T> reference_wrapper<const T> cref(const T& t);
+//
+//  where T is an incomplete type (since C++20)
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+struct Foo;
+
+Foo& get_foo();
+
+void test() {
+    Foo const& foo = get_foo();
+    std::reference_wrapper<Foo const> ref = std::cref(foo);
+    assert(&ref.get() == &foo);
+}
+
+struct Foo { };
+
+Foo& get_foo() {
+    static Foo foo;
+    return foo;
+}
+
+int main(int, char**) {
+    test();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref_1.pass.cpp
new file mode 100644
index 0000000..c6bc471
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref_1.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <ObjectType T> reference_wrapper<const T> cref(const T& t);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  int i = 0;
+  std::reference_wrapper<const int> r = std::cref(i);
+  assert(&r.get() == &i);
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref_2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref_2.pass.cpp
new file mode 100644
index 0000000..1cf3692
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/cref_2.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <ObjectType T> reference_wrapper<const T> cref(reference_wrapper<T> t);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+namespace adl {
+  struct A {};
+  void cref(A) {}
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  {
+    const int i = 0;
+    std::reference_wrapper<const int> r1 = std::cref(i);
+    std::reference_wrapper<const int> r2 = std::cref(r1);
+    assert(&r2.get() == &i);
+  }
+  {
+    adl::A a;
+    std::reference_wrapper<const adl::A> a1 = std::cref(a);
+    std::reference_wrapper<const adl::A> a2 = std::cref(a1);
+    assert(&a2.get() == &a);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/lwg3146.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/lwg3146.pass.cpp
new file mode 100644
index 0000000..66d2546
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/lwg3146.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <ObjectType T> reference_wrapper<T> ref(reference_wrapper<T> t);
+//   LWG 3146 "Excessive unwrapping in std::ref/cref"
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  {
+    int i = 0;
+    std::reference_wrapper<int> ri(i);
+    std::reference_wrapper<std::reference_wrapper<int> > rri(ri);
+    auto rrj = std::ref(rri);
+    ASSERT_SAME_TYPE(decltype(rrj), std::reference_wrapper<std::reference_wrapper<int> >);
+    assert(&rrj.get() == &ri);
+  }
+  {
+    int i = 0;
+    std::reference_wrapper<int> ri(i);
+    std::reference_wrapper<const std::reference_wrapper<int> > rri(ri);
+    auto rrj = std::ref(rri);
+    ASSERT_SAME_TYPE(decltype(rrj), std::reference_wrapper<const std::reference_wrapper<int> >);
+    assert(&rrj.get() == &ri);
+  }
+  {
+    int i = 0;
+    std::reference_wrapper<int> ri(i);
+    std::reference_wrapper<std::reference_wrapper<int> > rri(ri);
+    auto rrj = std::cref(rri);
+    ASSERT_SAME_TYPE(decltype(rrj), std::reference_wrapper<const std::reference_wrapper<int> >);
+    assert(&rrj.get() == &ri);
+  }
+  {
+    int i = 0;
+    std::reference_wrapper<int> ri(i);
+    std::reference_wrapper<const std::reference_wrapper<int> > rri(ri);
+    auto rrj = std::cref(rri);
+    ASSERT_SAME_TYPE(decltype(rrj), std::reference_wrapper<const std::reference_wrapper<int> >);
+    assert(&rrj.get() == &ri);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref.incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref.incomplete.pass.cpp
new file mode 100644
index 0000000..1b41563
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref.incomplete.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+//
+// reference_wrapper
+//
+// template <ObjectType T> reference_wrapper<T> ref(T& t);
+//
+//  where T is an incomplete type (since C++20)
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+struct Foo;
+
+Foo& get_foo();
+
+void test() {
+    Foo& foo = get_foo();
+    std::reference_wrapper<Foo> ref = std::ref(foo);
+    assert(&ref.get() == &foo);
+}
+
+struct Foo { };
+
+Foo& get_foo() {
+    static Foo foo;
+    return foo;
+}
+
+int main(int, char**) {
+    test();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.compile.fail.cpp
new file mode 100644
index 0000000..3721b9b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.compile.fail.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <ObjectType T> reference_wrapper<T> ref(T& t);
+
+// Don't allow binding to a temp
+
+#include <functional>
+
+struct A {};
+
+const A source() {return A();}
+
+int main(int, char**)
+{
+    std::reference_wrapper<const A> r = std::ref(source());
+    (void)r;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.pass.cpp
new file mode 100644
index 0000000..8424fcd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <ObjectType T> reference_wrapper<T> ref(T& t);
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  int i = 0;
+  std::reference_wrapper<int> r = std::ref(i);
+  assert(&r.get() == &i);
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_2.pass.cpp
new file mode 100644
index 0000000..97689fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_2.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <ObjectType T> reference_wrapper<T> ref(reference_wrapper<T> t);
+
+#include <functional>
+#include <cassert>
+
+#include "counting_predicates.h"
+
+#include "test_macros.h"
+
+bool is5 ( int i ) { return i == 5; }
+
+template <typename T>
+bool call_pred ( T pred ) { return pred(5); }
+
+namespace adl {
+  struct A {};
+  void ref(A) {}
+}
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+  {
+    int i = 0;
+    std::reference_wrapper<int> r1 = std::ref(i);
+    std::reference_wrapper<int> r2 = std::ref(r1);
+    assert(&r2.get() == &i);
+  }
+  {
+    adl::A a;
+    std::reference_wrapper<adl::A> a1 = std::ref(a);
+    std::reference_wrapper<adl::A> a2 = std::ref(a1);
+    assert(&a2.get() == &a);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  {
+    unary_counting_predicate<bool(*)(int), int> cp(is5);
+    assert(!cp(6));
+    assert(cp.count() == 1);
+    assert(call_pred(cp));
+    assert(cp.count() == 1);
+    assert(call_pred(std::ref(cp)));
+    assert(cp.count() == 2);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.compile.fail.cpp
new file mode 100644
index 0000000..d54d518
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.compile.fail.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <class... ArgTypes>
+//   requires Callable<T, ArgTypes&&...>
+//   Callable<T, ArgTypes&&...>::result_type
+//   operator()(ArgTypes&&... args) const;
+
+#include <functional>
+#include <cassert>
+
+// member data pointer:  cv qualifiers should transfer from argument to return type
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+
+    int data_;
+};
+
+void
+test_int_1()
+{
+    // member data pointer
+    {
+    int A_int_1::*fp = &A_int_1::data_;
+    std::reference_wrapper<int A_int_1::*> r1(fp);
+    A_int_1 a;
+    assert(r1(a) == 5);
+    r1(a) = 6;
+    assert(r1(a) == 6);
+    const A_int_1* ap = &a;
+    assert(r1(ap) == 6);
+    r1(ap) = 7;
+    assert(r1(ap) == 7);
+    }
+}
+
+int main(int, char**)
+{
+    test_int_1();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.incomplete.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.incomplete.compile.fail.cpp
new file mode 100644
index 0000000..d0438a9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.incomplete.compile.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <functional>
+//
+// reference_wrapper
+//
+// template <class... ArgTypes>
+//  std::invoke_result_t<T&, ArgTypes...>
+//      operator()(ArgTypes&&... args) const;
+//
+// Requires T to be a complete type (since C++20).
+
+#include <functional>
+
+
+struct Foo;
+Foo& get_foo();
+
+void test() {
+    std::reference_wrapper<Foo> ref = get_foo();
+    ref(0); // incomplete at the point of call
+}
+
+struct Foo { void operator()(int) const { } };
+Foo& get_foo() { static Foo foo; return foo; }
+
+int main(int, char**) {
+    test();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.pass.cpp
new file mode 100644
index 0000000..e5f3b13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke.pass.cpp
@@ -0,0 +1,332 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <class... ArgTypes>
+//   requires Callable<T, ArgTypes&&...>
+//   Callable<T, ArgTypes&&...>::result_type
+//   operator()(ArgTypes&&... args) const;
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int count = 0;
+
+// 1 arg, return void
+
+void f_void_1(int i)
+{
+    count += i;
+}
+
+struct A_void_1
+{
+    void operator()(int i)
+    {
+        count += i;
+    }
+
+    void mem1() {++count;}
+    void mem2() const {++count;}
+};
+
+void
+test_void_1()
+{
+    int save_count = count;
+    // function
+    {
+    std::reference_wrapper<void (int)> r1(f_void_1);
+    int i = 2;
+    r1(i);
+    assert(count == save_count+2);
+    save_count = count;
+    }
+    // function pointer
+    {
+    void (*fp)(int) = f_void_1;
+    std::reference_wrapper<void (*)(int)> r1(fp);
+    int i = 3;
+    r1(i);
+    assert(count == save_count+3);
+    save_count = count;
+    }
+    // functor
+    {
+    A_void_1 a0;
+    std::reference_wrapper<A_void_1> r1(a0);
+    int i = 4;
+    r1(i);
+    assert(count == save_count+4);
+    save_count = count;
+    }
+    // member function pointer
+    {
+    void (A_void_1::*fp)() = &A_void_1::mem1;
+    std::reference_wrapper<void (A_void_1::*)()> r1(fp);
+    A_void_1 a;
+    r1(a);
+    assert(count == save_count+1);
+    save_count = count;
+    A_void_1* ap = &a;
+    r1(ap);
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    // const member function pointer
+    {
+    void (A_void_1::*fp)() const = &A_void_1::mem2;
+    std::reference_wrapper<void (A_void_1::*)() const> r1(fp);
+    A_void_1 a;
+    r1(a);
+    assert(count == save_count+1);
+    save_count = count;
+    A_void_1* ap = &a;
+    r1(ap);
+    assert(count == save_count+1);
+    save_count = count;
+    }
+}
+
+// 1 arg, return int
+
+int f_int_1(int i)
+{
+    return i + 1;
+}
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+    int operator()(int i)
+    {
+        return i - 1;
+    }
+
+    int mem1() {return 3;}
+    int mem2() const {return 4;}
+    int data_;
+};
+
+void
+test_int_1()
+{
+    // function
+    {
+    std::reference_wrapper<int (int)> r1(f_int_1);
+    int i = 2;
+    assert(r1(i) == 3);
+    }
+    // function pointer
+    {
+    int (*fp)(int) = f_int_1;
+    std::reference_wrapper<int (*)(int)> r1(fp);
+    int i = 3;
+    assert(r1(i) == 4);
+    }
+    // functor
+    {
+    A_int_1 a0;
+    std::reference_wrapper<A_int_1> r1(a0);
+    int i = 4;
+    assert(r1(i) == 3);
+    }
+    // member function pointer
+    {
+    int (A_int_1::*fp)() = &A_int_1::mem1;
+    std::reference_wrapper<int (A_int_1::*)()> r1(fp);
+    A_int_1 a;
+    assert(r1(a) == 3);
+    A_int_1* ap = &a;
+    assert(r1(ap) == 3);
+    }
+    // const member function pointer
+    {
+    int (A_int_1::*fp)() const = &A_int_1::mem2;
+    std::reference_wrapper<int (A_int_1::*)() const> r1(fp);
+    A_int_1 a;
+    assert(r1(a) == 4);
+    A_int_1* ap = &a;
+    assert(r1(ap) == 4);
+    }
+    // member data pointer
+    {
+    int A_int_1::*fp = &A_int_1::data_;
+    std::reference_wrapper<int A_int_1::*> r1(fp);
+    A_int_1 a;
+    assert(r1(a) == 5);
+    r1(a) = 6;
+    assert(r1(a) == 6);
+    A_int_1* ap = &a;
+    assert(r1(ap) == 6);
+    r1(ap) = 7;
+    assert(r1(ap) == 7);
+    }
+}
+
+// 2 arg, return void
+
+void f_void_2(int i, int j)
+{
+    count += i+j;
+}
+
+struct A_void_2
+{
+    void operator()(int i, int j)
+    {
+        count += i+j;
+    }
+
+    void mem1(int i) {count += i;}
+    void mem2(int i) const {count += i;}
+};
+
+void
+test_void_2()
+{
+    int save_count = count;
+    // function
+    {
+    std::reference_wrapper<void (int, int)> r1(f_void_2);
+    int i = 2;
+    int j = 3;
+    r1(i, j);
+    assert(count == save_count+5);
+    save_count = count;
+    }
+    // function pointer
+    {
+    void (*fp)(int, int) = f_void_2;
+    std::reference_wrapper<void (*)(int, int)> r1(fp);
+    int i = 3;
+    int j = 4;
+    r1(i, j);
+    assert(count == save_count+7);
+    save_count = count;
+    }
+    // functor
+    {
+    A_void_2 a0;
+    std::reference_wrapper<A_void_2> r1(a0);
+    int i = 4;
+    int j = 5;
+    r1(i, j);
+    assert(count == save_count+9);
+    save_count = count;
+    }
+    // member function pointer
+    {
+    void (A_void_2::*fp)(int) = &A_void_2::mem1;
+    std::reference_wrapper<void (A_void_2::*)(int)> r1(fp);
+    A_void_2 a;
+    int i = 3;
+    r1(a, i);
+    assert(count == save_count+3);
+    save_count = count;
+    A_void_2* ap = &a;
+    r1(ap, i);
+    assert(count == save_count+3);
+    save_count = count;
+    }
+    // const member function pointer
+    {
+    void (A_void_2::*fp)(int) const = &A_void_2::mem2;
+    std::reference_wrapper<void (A_void_2::*)(int) const> r1(fp);
+    A_void_2 a;
+    int i = 4;
+    r1(a, i);
+    assert(count == save_count+4);
+    save_count = count;
+    A_void_2* ap = &a;
+    r1(ap, i);
+    assert(count == save_count+4);
+    save_count = count;
+    }
+}
+
+// 2 arg, return int
+
+int f_int_2(int i, int j)
+{
+    return i+j;
+}
+
+struct A_int_2
+{
+    int operator()(int i, int j)
+    {
+        return i+j;
+    }
+
+    int mem1(int i) {return i+1;}
+    int mem2(int i) const {return i+2;}
+};
+
+void
+testint_2()
+{
+    // function
+    {
+    std::reference_wrapper<int (int, int)> r1(f_int_2);
+    int i = 2;
+    int j = 3;
+    assert(r1(i, j) == i+j);
+    }
+    // function pointer
+    {
+    int (*fp)(int, int) = f_int_2;
+    std::reference_wrapper<int (*)(int, int)> r1(fp);
+    int i = 3;
+    int j = 4;
+    assert(r1(i, j) == i+j);
+    }
+    // functor
+    {
+    A_int_2 a0;
+    std::reference_wrapper<A_int_2> r1(a0);
+    int i = 4;
+    int j = 5;
+    assert(r1(i, j) == i+j);
+    }
+    // member function pointer
+    {
+    int(A_int_2::*fp)(int) = &A_int_2::mem1;
+    std::reference_wrapper<int (A_int_2::*)(int)> r1(fp);
+    A_int_2 a;
+    int i = 3;
+    assert(r1(a, i) == i+1);
+    A_int_2* ap = &a;
+    assert(r1(ap, i) == i+1);
+    }
+    // const member function pointer
+    {
+    int (A_int_2::*fp)(int) const = &A_int_2::mem2;
+    std::reference_wrapper<int (A_int_2::*)(int) const> r1(fp);
+    A_int_2 a;
+    int i = 4;
+    assert(r1(a, i) == i+2);
+    A_int_2* ap = &a;
+    assert(r1(ap, i) == i+2);
+    }
+}
+
+int main(int, char**)
+{
+    test_void_1();
+    test_int_1();
+    test_void_2();
+    testint_2();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke_int_0.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke_int_0.pass.cpp
new file mode 100644
index 0000000..5774837
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke_int_0.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <class... ArgTypes>
+//   requires Callable<T, ArgTypes&&...>
+//   Callable<T, ArgTypes&&...>::result_type
+//   operator()(ArgTypes&&... args) const;
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+// 0 args, return int
+
+int count = 0;
+
+int f_int_0()
+{
+    return 3;
+}
+
+struct A_int_0
+{
+    int operator()() {return 4;}
+};
+
+void
+test_int_0()
+{
+    // function
+    {
+    std::reference_wrapper<int ()> r1(f_int_0);
+    assert(r1() == 3);
+    }
+    // function pointer
+    {
+    int (*fp)() = f_int_0;
+    std::reference_wrapper<int (*)()> r1(fp);
+    assert(r1() == 3);
+    }
+    // functor
+    {
+    A_int_0 a0;
+    std::reference_wrapper<A_int_0> r1(a0);
+    assert(r1() == 4);
+    }
+}
+
+// 1 arg, return void
+
+void f_void_1(int i)
+{
+    count += i;
+}
+
+struct A_void_1
+{
+    void operator()(int i)
+    {
+        count += i;
+    }
+};
+
+int main(int, char**)
+{
+    test_int_0();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke_void_0.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke_void_0.pass.cpp
new file mode 100644
index 0000000..cfaf75b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/invoke_void_0.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// template <class... ArgTypes>
+//   requires Callable<T, ArgTypes&&...>
+//   Callable<T, ArgTypes&&...>::result_type
+//   operator()(ArgTypes&&... args) const;
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+// 0 args, return void
+
+int count = 0;
+
+void f_void_0()
+{
+    ++count;
+}
+
+struct A_void_0
+{
+    void operator()() {++count;}
+};
+
+void
+test_void_0()
+{
+    int save_count = count;
+    // function
+    {
+    std::reference_wrapper<void ()> r1(f_void_0);
+    r1();
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    // function pointer
+    {
+    void (*fp)() = f_void_0;
+    std::reference_wrapper<void (*)()> r1(fp);
+    r1();
+    assert(count == save_count+1);
+    save_count = count;
+    }
+    // functor
+    {
+    A_void_0 a0;
+    std::reference_wrapper<A_void_0> r1(a0);
+    r1();
+    assert(count == save_count+1);
+    save_count = count;
+    }
+}
+
+int main(int, char**)
+{
+    test_void_0();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..2774401
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/refwrap.invoke/robust_against_adl.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+typedef Holder<Incomplete> *Ptr;
+
+Ptr no_args() { return nullptr; }
+Ptr one_arg(Ptr p) { return p; }
+Ptr two_args(Ptr p, Ptr) { return p; }
+Ptr three_args(Ptr p, Ptr, Ptr) { return p; }
+
+void one_arg_void(Ptr) { }
+
+int main(int, char**)
+{
+    Ptr x = nullptr;
+    const Ptr cx = nullptr;
+    std::ref(no_args)();
+    std::ref(one_arg)(x);
+    std::ref(one_arg)(cx);
+    std::ref(two_args)(x, x);
+    std::ref(two_args)(x, cx);
+    std::ref(two_args)(cx, x);
+    std::ref(two_args)(cx, cx);
+    std::ref(three_args)(x, x, x);
+    std::ref(three_args)(x, x, cx);
+    std::ref(three_args)(x, cx, x);
+    std::ref(three_args)(cx, x, x);
+    std::ref(three_args)(x, cx, cx);
+    std::ref(three_args)(cx, x, cx);
+    std::ref(three_args)(cx, cx, x);
+    std::ref(three_args)(cx, cx, cx);
+    std::ref(one_arg_void)(x);
+    std::ref(one_arg_void)(cx);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/type.pass.cpp
new file mode 100644
index 0000000..31e1b69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/type.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// check for member typedef type
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+class C {};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::reference_wrapper<C>::type,
+                                                       C>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<void ()>::type,
+                                                       void ()>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int* (double*)>::type,
+                                                       int* (double*)>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<void(*)()>::type,
+                                                       void(*)()>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int*(*)(double*)>::type,
+                                                       int*(*)(double*)>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int*(C::*)(double*)>::type,
+                                                       int*(C::*)(double*)>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int (C::*)(double*) const volatile>::type,
+                                                       int (C::*)(double*) const volatile>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/type_properties.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/type_properties.pass.cpp
new file mode 100644
index 0000000..d8d7544
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/type_properties.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// Test that reference wrapper meets the requirements of CopyConstructible and
+// CopyAssignable, and TriviallyCopyable (starting in C++14).
+
+#include <functional>
+#include <type_traits>
+#include <string>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+class MoveOnly
+{
+    MoveOnly(const MoveOnly&);
+    MoveOnly& operator=(const MoveOnly&);
+
+    int data_;
+public:
+    MoveOnly(int data = 1) : data_(data) {}
+    MoveOnly(MoveOnly&& x)
+        : data_(x.data_) {x.data_ = 0;}
+    MoveOnly& operator=(MoveOnly&& x)
+        {data_ = x.data_; x.data_ = 0; return *this;}
+
+    int get() const {return data_;}
+};
+#endif
+
+
+template <class T>
+void test()
+{
+    typedef std::reference_wrapper<T> Wrap;
+    static_assert(std::is_copy_constructible<Wrap>::value, "");
+    static_assert(std::is_copy_assignable<Wrap>::value, "");
+#if TEST_STD_VER >= 14
+    static_assert(std::is_trivially_copyable<Wrap>::value, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<int>();
+    test<double>();
+    test<std::string>();
+#if TEST_STD_VER >= 11
+    test<MoveOnly>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/unwrap_ref_decay.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/unwrap_ref_decay.pass.cpp
new file mode 100644
index 0000000..7062b20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/unwrap_ref_decay.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// template <class T>
+// struct unwrap_ref_decay;
+//
+// template <class T>
+// using unwrap_ref_decay_t = typename unwrap_ref_decay<T>::type;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+template <typename T, typename Result>
+void check() {
+  static_assert(std::is_same_v<typename std::unwrap_ref_decay<T>::type, Result>);
+  static_assert(std::is_same_v<typename std::unwrap_ref_decay<T>::type, std::unwrap_ref_decay_t<T>>);
+}
+
+struct T { };
+
+int main(int, char**) {
+  check<T,             T>();
+  check<T&,            T>();
+  check<T const,       T>();
+  check<T const&,      T>();
+  check<T*,            T*>();
+  check<T const*,      T const*>();
+  check<T[3],          T*>();
+  check<T const [3],   T const*>();
+  check<T (),          T (*)()>();
+  check<T (int) const, T (int) const>();
+  check<T (int) &,     T (int) &>();
+  check<T (int) &&,    T (int) &&>();
+
+  check<std::reference_wrapper<T>,         T&>();
+  check<std::reference_wrapper<T>&,        T&>();
+  check<std::reference_wrapper<T const>,   T const&>();
+  check<std::reference_wrapper<T const>&,  T const&>();
+  check<std::reference_wrapper<T*>,        T*&>();
+  check<std::reference_wrapper<T*>&,       T*&>();
+  check<std::reference_wrapper<T const*>,  T const*&>();
+  check<std::reference_wrapper<T const*>&, T const*&>();
+  check<std::reference_wrapper<T[3]>,      T (&)[3]>();
+  check<std::reference_wrapper<T[3]>&,     T (&)[3]>();
+  check<std::reference_wrapper<T ()>,      T (&)()>();
+  check<std::reference_wrapper<T ()>&,     T (&)()>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/unwrap_reference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/unwrap_reference.pass.cpp
new file mode 100644
index 0000000..82bf213
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/unwrap_reference.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+//
+// template <class T>
+// struct unwrap_reference;
+//
+// template <class T>
+// using unwrap_reference_t = typename unwrap_reference<T>::type;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+template <typename T, typename Expected>
+void check_equal() {
+  static_assert(std::is_same_v<typename std::unwrap_reference<T>::type, Expected>);
+  static_assert(std::is_same_v<typename std::unwrap_reference<T>::type, std::unwrap_reference_t<T>>);
+}
+
+template <typename T>
+void check() {
+  check_equal<T, T>();
+  check_equal<T&, T&>();
+  check_equal<T const, T const>();
+  check_equal<T const&, T const&>();
+
+  check_equal<std::reference_wrapper<T>, T&>();
+  check_equal<std::reference_wrapper<T const>, T const&>();
+}
+
+struct T { };
+
+int main(int, char**) {
+  check<T>();
+  check<int>();
+  check<float>();
+
+  check<T*>();
+  check<int*>();
+  check<float*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/weak_result.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/weak_result.pass.cpp
new file mode 100644
index 0000000..512d4e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/refwrap/weak_result.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// reference_wrapper
+
+// has weak result type
+
+// REQUIRES: c++03 || c++11 || c++14 || c++17
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Arg, class Result>
+struct my_unary_function
+{ // std::unary_function was removed in C++17
+    typedef Arg argument_type;
+    typedef Result result_type;
+};
+
+template <class Arg1, class Arg2, class Result>
+struct my_binary_function
+{ // std::binary_function was removed in C++17
+    typedef Arg1 first_argument_type;
+    typedef Arg2 second_argument_type;
+    typedef Result result_type;
+};
+
+class functor1
+    : public my_unary_function<int, char>
+{
+};
+
+class functor2
+    : public my_binary_function<char, int, double>
+{
+};
+
+class functor3
+    : public my_unary_function<char, int>,
+      public my_binary_function<char, int, double>
+{
+public:
+    typedef float result_type;
+};
+
+class functor4
+    : public my_unary_function<char, int>,
+      public my_binary_function<char, int, double>
+{
+public:
+};
+
+class C {};
+
+template <class T>
+struct has_result_type
+{
+private:
+    struct two {char _; char __;};
+    template <class U> static two test(...);
+    template <class U> static char test(typename U::result_type* = 0);
+public:
+    static const bool value = sizeof(test<T>(0)) == 1;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::reference_wrapper<functor1>::result_type,
+                                char>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<functor2>::result_type,
+                                double>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<functor3>::result_type,
+                                float>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<void()>::result_type,
+                                void>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int*(double*)>::result_type,
+                                int*>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<void(*)()>::result_type,
+                                void>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int*(*)(double*)>::result_type,
+                                int*>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int*(C::*)(double*)>::result_type,
+                                int*>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<int (C::*)(double*) const volatile>::result_type,
+                                int>::value), "");
+    static_assert((std::is_same<std::reference_wrapper<C()>::result_type,
+                                C>::value), "");
+    static_assert(has_result_type<std::reference_wrapper<functor3> >::value, "");
+    static_assert(!has_result_type<std::reference_wrapper<functor4> >::value, "");
+    static_assert(!has_result_type<std::reference_wrapper<C> >::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enabled_hashes.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enabled_hashes.pass.cpp
new file mode 100644
index 0000000..53d8ed7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enabled_hashes.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// Test that <functional> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <functional>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enum.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enum.compile.fail.cpp
new file mode 100644
index 0000000..2e36b4c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enum.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+//  Hashing a struct w/o a defined hash should fail.
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+
+struct X {};
+
+int main(int, char**)
+{
+    X x;
+    size_t h = std::hash<X>{} ( x );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enum.pass.cpp
new file mode 100644
index 0000000..6dd14dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/enum.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// Make sure that we can hash enumeration values.
+
+#include "test_macros.h"
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+#include <limits>
+
+enum class Colors { red, orange, yellow, green, blue, indigo, violet };
+enum class Cardinals { zero, one, two, three, five=5 };
+enum class LongColors : short { red, orange, yellow, green, blue, indigo, violet };
+enum class ShortColors : long { red, orange, yellow, green, blue, indigo, violet };
+enum class EightBitColors : uint8_t { red, orange, yellow, green, blue, indigo, violet };
+
+enum Fruits { apple, pear, grape, mango, cantaloupe };
+
+template <class T>
+void
+test()
+{
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename H::argument_type, T>::value), "");
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "");
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    typedef typename std::underlying_type<T>::type under_type;
+
+    H h1;
+    std::hash<under_type> h2;
+    for (int i = 0; i <= 5; ++i)
+    {
+        T t(static_cast<T> (i));
+        const bool small = std::integral_constant<bool, sizeof(T) <= sizeof(std::size_t)>::value; // avoid compiler warnings
+        if (small)
+            assert(h1(t) == h2(static_cast<under_type>(i)));
+    }
+}
+
+int main(int, char**)
+{
+    test<Cardinals>();
+
+    test<Colors>();
+    test<ShortColors>();
+    test<LongColors>();
+    test<EightBitColors>();
+
+    test<Fruits>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/floating.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/floating.pass.cpp
new file mode 100644
index 0000000..b8f85e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/floating.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// template <class T>
+// struct hash
+//     : public unary_function<T, size_t>
+// {
+//     size_t operator()(T val) const;
+// };
+
+// Not very portable
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+#include <limits>
+#include <cmath>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename H::argument_type, T>::value), "");
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "");
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    H h;
+
+    std::size_t t0 = h(0.);
+    std::size_t tn0 = h(-0.);
+    std::size_t tp1 = h(static_cast<T>(0.1));
+    std::size_t t1 = h(1);
+    std::size_t tn1 = h(-1);
+    std::size_t pinf = h(INFINITY);
+    std::size_t ninf = h(-INFINITY);
+    assert(t0 == tn0);
+    assert(t0 != tp1);
+    assert(t0 != t1);
+    assert(t0 != tn1);
+    assert(t0 != pinf);
+    assert(t0 != ninf);
+
+    assert(tp1 != t1);
+    assert(tp1 != tn1);
+    assert(tp1 != pinf);
+    assert(tp1 != ninf);
+
+    assert(t1 != tn1);
+    assert(t1 != pinf);
+    assert(t1 != ninf);
+
+    assert(tn1 != pinf);
+    assert(tn1 != ninf);
+
+    assert(pinf != ninf);
+}
+
+int main(int, char**)
+{
+    test<float>();
+    test<double>();
+    test<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/integral.pass.cpp
new file mode 100644
index 0000000..2cfed3e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/integral.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// template <class T>
+// struct hash
+//     : public unary_function<T, size_t>
+// {
+//     size_t operator()(T val) const;
+// };
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+#include <cstddef>
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename H::argument_type, T>::value), "");
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "");
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    H h;
+
+    for (int i = 0; i <= 5; ++i)
+    {
+        T t(static_cast<T>(i));
+        const bool small = std::integral_constant<bool, sizeof(T) <= sizeof(std::size_t)>::value; // avoid compiler warnings
+        if (small)
+        {
+            const std::size_t result = h(t);
+            LIBCPP_ASSERT(result == static_cast<size_t>(t));
+            ((void)result); // Prevent unused warning
+        }
+    }
+}
+
+int main(int, char**)
+{
+    test<bool>();
+    test<char>();
+    test<signed char>();
+    test<unsigned char>();
+    test<char16_t>();
+    test<char32_t>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test<wchar_t>();
+#endif
+    test<short>();
+    test<unsigned short>();
+    test<int>();
+    test<unsigned int>();
+    test<long>();
+    test<unsigned long>();
+    test<long long>();
+    test<unsigned long long>();
+
+//  LWG #2119
+    test<std::ptrdiff_t>();
+    test<size_t>();
+
+    test<int8_t>();
+    test<int16_t>();
+    test<int32_t>();
+    test<int64_t>();
+
+    test<int_fast8_t>();
+    test<int_fast16_t>();
+    test<int_fast32_t>();
+    test<int_fast64_t>();
+
+    test<int_least8_t>();
+    test<int_least16_t>();
+    test<int_least32_t>();
+    test<int_least64_t>();
+
+    test<intmax_t>();
+    test<intptr_t>();
+
+    test<uint8_t>();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+
+    test<uint_fast8_t>();
+    test<uint_fast16_t>();
+    test<uint_fast32_t>();
+    test<uint_fast64_t>();
+
+    test<uint_least8_t>();
+    test<uint_least16_t>();
+    test<uint_least32_t>();
+    test<uint_least64_t>();
+
+    test<uintmax_t>();
+    test<uintptr_t>();
+
+#ifndef TEST_HAS_NO_INT128
+    test<__int128_t>();
+    test<__uint128_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/non_enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/non_enum.pass.cpp
new file mode 100644
index 0000000..94cc9d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/non_enum.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+//  Hashing a struct w/o a defined hash should *not* fail, but it should
+// create a type that is not constructible and not callable.
+// See also: https://cplusplus.github.io/LWG/lwg-defects.html#2543
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct X {};
+
+int main(int, char**)
+{
+    using H = std::hash<X>;
+    static_assert(!std::is_default_constructible<H>::value, "");
+    static_assert(!std::is_copy_constructible<H>::value, "");
+    static_assert(!std::is_move_constructible<H>::value, "");
+    static_assert(!std::is_copy_assignable<H>::value, "");
+    static_assert(!std::is_move_assignable<H>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_invocable<H, X&>::value, "");
+    static_assert(!std::is_invocable<H, X const&>::value, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/pointer.pass.cpp
new file mode 100644
index 0000000..577a9bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/function.objects/unord.hash/pointer.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <functional>
+
+// template <class T>
+// struct hash
+//     : public unary_function<T, size_t>
+// {
+//     size_t operator()(T val) const;
+// };
+
+// Not very portable
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+#include <limits>
+
+#include "test_macros.h"
+
+template <class T>
+void
+test()
+{
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename H::argument_type, T>::value), "");
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "");
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+    H h;
+
+    typedef typename std::remove_pointer<T>::type type;
+    type i;
+    type j;
+    assert(h(&i) != h(&j));
+}
+
+// can't hash nullptr_t until C++17
+void test_nullptr()
+{
+#if TEST_STD_VER > 14
+    typedef std::nullptr_t T;
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename H::argument_type, T>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+#endif
+}
+
+int main(int, char**)
+{
+    test<int*>();
+    test_nullptr();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.general/integer_seq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.general/integer_seq.pass.cpp
new file mode 100644
index 0000000..f607da7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.general/integer_seq.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <utility>
+
+// class make_integer_sequence
+
+#include <tuple>
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename AtContainer, typename T, T... I>
+auto extract ( const AtContainer &t, const std::integer_sequence<T, I...> )
+-> decltype ( std::make_tuple ( std::get<I>(t)... ))
+{     return  std::make_tuple ( std::get<I>(t)... ); }
+
+int main(int, char**)
+{
+//  Make a couple of sequences
+    using int3    = std::make_integer_sequence<int, 3>;     // generates int:    0,1,2
+    using size7   = std::make_integer_sequence<size_t, 7>;  // generates size_t: 0,1,2,3,4,5,6
+    using size4   = std::make_index_sequence<4>;            // generates size_t: 0,1,2,3
+    using size2   = std::index_sequence_for<int, size_t>;   // generates size_t: 0,1
+    using intmix  = std::integer_sequence<int, 9, 8, 7, 2>; // generates int:    9,8,7,2
+    using sizemix = std::index_sequence<1, 1, 2, 3, 5>;     // generates size_t: 1,1,2,3,5
+
+//  Make sure they're what we expect
+    static_assert ( std::is_same<int3::value_type, int>::value, "int3 type wrong" );
+    static_assert ( int3::size () == 3, "int3 size wrong" );
+
+    static_assert ( std::is_same<size7::value_type, size_t>::value, "size7 type wrong" );
+    static_assert ( size7::size () == 7, "size7 size wrong" );
+
+    static_assert ( std::is_same<size4::value_type, size_t>::value, "size4 type wrong" );
+    static_assert ( size4::size () == 4, "size4 size wrong" );
+
+    static_assert ( std::is_same<size2::value_type, size_t>::value, "size2 type wrong" );
+    static_assert ( size2::size () == 2, "size2 size wrong" );
+
+    static_assert ( std::is_same<intmix::value_type, int>::value, "intmix type wrong" );
+    static_assert ( intmix::size () == 4, "intmix size wrong" );
+
+    static_assert ( std::is_same<sizemix::value_type, size_t>::value, "sizemix type wrong" );
+    static_assert ( sizemix::size () == 5, "sizemix size wrong" );
+
+    auto tup = std::make_tuple ( 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 );
+
+//  Use them
+    auto t3 = extract ( tup, int3() );
+    static_assert ( std::tuple_size<decltype(t3)>::value == int3::size (), "t3 size wrong");
+    assert ( t3 == std::make_tuple ( 10, 11, 12 ));
+
+    auto t7 = extract ( tup, size7 ());
+    static_assert ( std::tuple_size<decltype(t7)>::value == size7::size (), "t7 size wrong");
+    assert ( t7 == std::make_tuple ( 10, 11, 12, 13, 14, 15, 16 ));
+
+    auto t4 = extract ( tup, size4 ());
+    static_assert ( std::tuple_size<decltype(t4)>::value == size4::size (), "t4 size wrong");
+    assert ( t4 == std::make_tuple ( 10, 11, 12, 13 ));
+
+    auto t2 = extract ( tup, size2 ());
+    static_assert ( std::tuple_size<decltype(t2)>::value == size2::size (), "t2 size wrong");
+    assert ( t2 == std::make_tuple ( 10, 11 ));
+
+    auto tintmix = extract ( tup, intmix ());
+    static_assert ( std::tuple_size<decltype(tintmix)>::value == intmix::size (), "tintmix size wrong");
+    assert ( tintmix == std::make_tuple ( 19, 18, 17, 12 ));
+
+    auto tsizemix = extract ( tup, sizemix ());
+    static_assert ( std::tuple_size<decltype(tsizemix)>::value == sizemix::size (), "tsizemix size wrong");
+    assert ( tsizemix == std::make_tuple ( 11, 11, 12, 13, 15 ));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.intseq/integer_seq.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.intseq/integer_seq.compile.fail.cpp
new file mode 100644
index 0000000..7575d3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.intseq/integer_seq.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// <utility>
+
+// template<class T, T... I>
+// struct integer_sequence
+// {
+//     typedef T type;
+//
+//     static constexpr size_t size() noexcept;
+// };
+
+// This test is a conforming extension.  The extension turns undefined behavior
+//  into a compile-time error.
+
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    // Should fail to compile, since float is not an integral type
+    using floatmix = std::integer_sequence<float>;
+    floatmix::value_type I;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.intseq/integer_seq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.intseq/integer_seq.pass.cpp
new file mode 100644
index 0000000..ffd212f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.intseq/integer_seq.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <utility>
+
+// template<class T, T... I>
+// struct integer_sequence
+// {
+//     typedef T type;
+//
+//     static constexpr size_t size() noexcept;
+// };
+
+#include <utility>
+#include <type_traits>
+#include <cstddef>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+//  Make a few of sequences
+    using int3    = std::integer_sequence<int, 3, 2, 1>;
+    using size1   = std::integer_sequence<std::size_t, 7>;
+    using ushort2 = std::integer_sequence<unsigned short, 4, 6>;
+    using bool0   = std::integer_sequence<bool>;
+
+//  Make sure they're what we expect
+    static_assert ( std::is_same<int3::value_type, int>::value, "int3 type wrong" );
+    static_assert ( int3::size() == 3, "int3 size wrong" );
+
+    static_assert ( std::is_same<size1::value_type, std::size_t>::value, "size1 type wrong" );
+    static_assert ( size1::size() == 1, "size1 size wrong" );
+
+    static_assert ( std::is_same<ushort2::value_type, unsigned short>::value, "ushort2 type wrong" );
+    static_assert ( ushort2::size() == 2, "ushort2 size wrong" );
+
+    static_assert ( std::is_same<bool0::value_type, bool>::value, "bool0 type wrong" );
+    static_assert ( bool0::size() == 0, "bool0 size wrong" );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.fail.cpp
new file mode 100644
index 0000000..8ba7123
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template<class T, T N>
+//   using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>;
+
+// UNSUPPORTED: c++03, c++11
+
+// This test hangs during recursive template instantiation with libstdc++
+// UNSUPPORTED: stdlib=libstdc++
+
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  typedef std::make_integer_sequence<int, -3> MakeSeqT;
+
+  // std::make_integer_sequence is implemented using a compiler builtin if available.
+  // this builtin has different diagnostic messages than the fallback implementation.
+#if TEST_HAS_BUILTIN(__make_integer_seq) && !defined(_LIBCPP_TESTING_FALLBACK_MAKE_INTEGER_SEQUENCE)
+  MakeSeqT i; // expected-error@*:* {{integer sequences must have non-negative sequence length}}
+#else
+  MakeSeqT i; // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed{{.*}}std::make_integer_sequence must have a non-negative sequence length}}
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.pass.cpp
new file mode 100644
index 0000000..a20141c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template<class T, T N>
+//   using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>;
+
+// UNSUPPORTED: c++03, c++11
+
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::is_same<std::make_integer_sequence<int, 0>, std::integer_sequence<int>>::value, "");
+    static_assert(std::is_same<std::make_integer_sequence<int, 1>, std::integer_sequence<int, 0>>::value, "");
+    static_assert(std::is_same<std::make_integer_sequence<int, 2>, std::integer_sequence<int, 0, 1>>::value, "");
+    static_assert(std::is_same<std::make_integer_sequence<int, 3>, std::integer_sequence<int, 0, 1, 2>>::value, "");
+
+    static_assert(std::is_same<std::make_integer_sequence<unsigned long long, 0>, std::integer_sequence<unsigned long long>>::value, "");
+    static_assert(std::is_same<std::make_integer_sequence<unsigned long long, 1>, std::integer_sequence<unsigned long long, 0>>::value, "");
+    static_assert(std::is_same<std::make_integer_sequence<unsigned long long, 2>, std::integer_sequence<unsigned long long, 0, 1>>::value, "");
+    static_assert(std::is_same<std::make_integer_sequence<unsigned long long, 3>, std::integer_sequence<unsigned long long, 0, 1, 2>>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq_fallback.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq_fallback.compile.fail.cpp
new file mode 100644
index 0000000..23dd154
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq_fallback.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template<class T, T N>
+//   using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>;
+
+// UNSUPPORTED: c++03, c++11
+
+// This test hangs during recursive template instantiation with libstdc++
+// UNSUPPORTED: stdlib=libstdc++
+
+#define _LIBCPP_TESTING_FALLBACK_MAKE_INTEGER_SEQUENCE
+#include "make_integer_seq.fail.cpp"
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq_fallback.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq_fallback.pass.cpp
new file mode 100644
index 0000000..ceeb4dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/intseq/intseq.make/make_integer_seq_fallback.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template<class T, T N>
+//   using make_integer_sequence = integer_sequence<T, 0, 1, ..., N-1>;
+
+// UNSUPPORTED: c++03, c++11
+
+#define _LIBCPP_TESTING_FALLBACK_MAKE_INTEGER_SEQUENCE
+#include "make_integer_seq.pass.cpp"
+
+#include "test_macros.h"
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.tag/allocator_arg.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.tag/allocator_arg.fail.cpp
new file mode 100644
index 0000000..94752af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.tag/allocator_arg.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// struct allocator_arg_t { explicit allocator_arg_t() = default; };
+// const allocator_arg_t allocator_arg = allocator_arg_t();
+
+// This test checks for LWG 2510.
+
+#include <memory>
+
+
+std::allocator_arg_t f() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.tag/allocator_arg.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.tag/allocator_arg.pass.cpp
new file mode 100644
index 0000000..e22bec1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.tag/allocator_arg.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// struct allocator_arg_t { explicit allocator_arg_t() = default; };
+// const allocator_arg_t allocator_arg = allocator_arg_t();
+
+#include <memory>
+
+#include "test_macros.h"
+
+void test(std::allocator_arg_t) {}
+
+int main(int, char**)
+{
+    test(std::allocator_arg);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocate_at_least.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocate_at_least.pass.cpp
new file mode 100644
index 0000000..c8e2394
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocate_at_least.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <memory>
+
+// template<class Allocator>
+// [[nodiscard]] constexpr allocation_result<typename allocator_traits<Allocator>::pointer>
+//   allocate_at_least(Allocator& a, size_t n);
+
+#include <cassert>
+#include <concepts>
+#include <cstddef>
+#include <memory>
+
+// check that std::allocation_result exists and isn't restricted to pointers
+using AllocResult = std::allocation_result<int>;
+
+template <class T>
+struct no_allocate_at_least {
+  using value_type = T;
+  T t;
+
+  constexpr T* allocate(size_t) { return &t; }
+  constexpr void deallocate(T*, size_t) {}
+};
+
+template <class T>
+struct has_allocate_at_least {
+  using value_type = T;
+  T t1;
+  T t2;
+
+  constexpr T* allocate(size_t) { return &t1; }
+  constexpr void deallocate(T*, size_t) {}
+  constexpr std::allocation_result<T*> allocate_at_least(size_t) {
+    return {&t2, 2};
+  }
+};
+
+constexpr bool test() {
+  { // check that std::allocate_at_least forwards to allocator::allocate if no allocate_at_least exists
+    no_allocate_at_least<int> alloc;
+    std::same_as<std::allocation_result<int*>> decltype(auto) ret = std::allocate_at_least(alloc, 1);
+    assert(ret.count == 1);
+    assert(ret.ptr == &alloc.t);
+  }
+
+  { // check that std::allocate_at_least forwards to allocator::allocate_at_least if allocate_at_least exists
+    has_allocate_at_least<int> alloc;
+    std::same_as<std::allocation_result<int*>> decltype(auto) ret = std::allocate_at_least(alloc, 1);
+    assert(ret.count == 2);
+    assert(ret.ptr == &alloc.t2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate.pass.cpp
new file mode 100644
index 0000000..ab354f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     static constexpr pointer allocate(allocator_type& a, size_type n);
+//     ...
+// };
+
+#include <memory>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 A() {}
+
+    TEST_CONSTEXPR_CXX20 value_type* allocate(std::size_t n)
+    {
+        assert(n == 10);
+        return &storage;
+    }
+
+    value_type storage;
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        A<int> a;
+        assert(std::allocator_traits<A<int> >::allocate(a, 10) == &a.storage);
+    }
+    {
+        typedef A<IncompleteHolder*> Alloc;
+        Alloc a;
+        assert(std::allocator_traits<Alloc>::allocate(a, 10) == &a.storage);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate.verify.cpp
new file mode 100644
index 0000000..7e3c41c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate.verify.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     static constexpr pointer allocate(allocator_type& a, size_type n);
+//     ...
+// };
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <cstddef>
+#include <cstdint>
+#include <memory>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+    value_type* allocate(std::size_t n)
+    {
+        assert(n == 12);
+        return reinterpret_cast<value_type*>(static_cast<std::uintptr_t>(0xEEADBEEF));
+    }
+    value_type* allocate(std::size_t n, const void* p)
+    {
+        assert(n == 11);
+        assert(p == 0);
+        return reinterpret_cast<value_type*>(static_cast<std::uintptr_t>(0xFEADBEEF));
+    }
+};
+
+int main(int, char**)
+{
+    A<int> a;
+    std::allocator_traits<A<int> >::allocate(a, 10);          // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    std::allocator_traits<A<int> >::allocate(a, 10, nullptr); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate_hint.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate_hint.pass.cpp
new file mode 100644
index 0000000..a8205f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/allocate_hint.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     static constexpr pointer allocate(allocator_type& a, size_type n, const_void_pointer hint);
+//     ...
+// };
+
+#include <memory>
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 A() {}
+
+    TEST_CONSTEXPR_CXX20 value_type* allocate(std::size_t n)
+    {
+        assert(n == 10);
+        return &storage;
+    }
+
+    value_type storage;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 value_type* allocate(std::size_t n, const void* p)
+    {
+        assert(n == 11);
+        assert(p == nullptr);
+        return &storage;
+    }
+
+    value_type storage;
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+#if TEST_STD_VER >= 11
+    {
+        A<int> a;
+        assert(std::allocator_traits<A<int> >::allocate(a, 10, nullptr) == &a.storage);
+    }
+    {
+        typedef A<IncompleteHolder*> Alloc;
+        Alloc a;
+        assert(std::allocator_traits<Alloc>::allocate(a, 10, nullptr) == &a.storage);
+    }
+#endif
+    {
+        B<int> b;
+        assert(std::allocator_traits<B<int> >::allocate(b, 11, nullptr) == &b.storage);
+    }
+    {
+        typedef B<IncompleteHolder*> Alloc;
+        Alloc b;
+        assert(std::allocator_traits<Alloc>::allocate(b, 11, nullptr) == &b.storage);
+    }
+
+    return true;
+}
+
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp
new file mode 100644
index 0000000..b2258ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/construct.pass.cpp
@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     template <class Ptr, class... Args>
+//     static constexpr void construct(allocator_type& a, Ptr p, Args&&... args);
+//     ...
+// };
+
+#include <memory>
+#include <new>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 B(int& count) : count_(count) {}
+
+#if TEST_STD_VER >= 11
+    template <class U, class ...Args>
+    TEST_CONSTEXPR_CXX20 void construct(U* p, Args&& ...args)
+    {
+        ++count_;
+#if TEST_STD_VER > 17
+        std::construct_at(p, std::forward<Args>(args)...);
+#else
+        ::new ((void*)p) U(std::forward<Args>(args)...);
+#endif
+    }
+#endif
+
+    int& count_;
+};
+
+struct A0
+{
+    TEST_CONSTEXPR_CXX20 A0(int* count) {++*count;}
+};
+
+struct A1
+{
+    TEST_CONSTEXPR_CXX20 A1(int* count, char c)
+    {
+        assert(c == 'c');
+        ++*count;
+    }
+};
+
+struct A2
+{
+    TEST_CONSTEXPR_CXX20 A2(int* count, char c, int i)
+    {
+        assert(c == 'd');
+        assert(i == 5);
+        ++*count;
+    }
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        int A0_count = 0;
+        A<A0> a;
+        std::allocator<A0> alloc;
+        A0* a0 = alloc.allocate(1);
+        assert(A0_count == 0);
+        std::allocator_traits<A<A0> >::construct(a, a0, &A0_count);
+        assert(A0_count == 1);
+        alloc.deallocate(a0, 1);
+    }
+    {
+        int A1_count = 0;
+        A<A1> a;
+        std::allocator<A1> alloc;
+        A1* a1 = alloc.allocate(1);
+        assert(A1_count == 0);
+        std::allocator_traits<A<A1> >::construct(a, a1, &A1_count, 'c');
+        assert(A1_count == 1);
+        alloc.deallocate(a1, 1);
+    }
+    {
+        int A2_count = 0;
+        A<A2> a;
+        std::allocator<A2> alloc;
+        A2* a2 = alloc.allocate(1);
+        assert(A2_count == 0);
+        std::allocator_traits<A<A2> >::construct(a, a2, &A2_count, 'd', 5);
+        assert(A2_count == 1);
+        alloc.deallocate(a2, 1);
+    }
+    {
+      typedef IncompleteHolder* VT;
+      typedef A<VT> Alloc;
+      Alloc a;
+      std::allocator<VT> alloc;
+      VT* vt = alloc.allocate(1);
+      std::allocator_traits<Alloc>::construct(a, vt, nullptr);
+      alloc.deallocate(vt, 1);
+    }
+
+#if TEST_STD_VER >= 11
+    {
+        int A0_count = 0;
+        int b_construct = 0;
+        B<A0> b(b_construct);
+        std::allocator<A0> alloc;
+        A0* a0 = alloc.allocate(1);
+        assert(A0_count == 0);
+        assert(b_construct == 0);
+        std::allocator_traits<B<A0> >::construct(b, a0, &A0_count);
+        assert(A0_count == 1);
+        assert(b_construct == 1);
+        alloc.deallocate(a0, 1);
+    }
+    {
+        int A1_count = 0;
+        int b_construct = 0;
+        B<A1> b(b_construct);
+        std::allocator<A1> alloc;
+        A1* a1 = alloc.allocate(1);
+        assert(A1_count == 0);
+        assert(b_construct == 0);
+        std::allocator_traits<B<A1> >::construct(b, a1, &A1_count, 'c');
+        assert(A1_count == 1);
+        assert(b_construct == 1);
+        alloc.deallocate(a1, 1);
+    }
+    {
+        int A2_count = 0;
+        int b_construct = 0;
+        B<A2> b(b_construct);
+        std::allocator<A2> alloc;
+        A2* a2 = alloc.allocate(1);
+        assert(A2_count == 0);
+        assert(b_construct == 0);
+        std::allocator_traits<B<A2> >::construct(b, a2, &A2_count, 'd', 5);
+        assert(A2_count == 1);
+        assert(b_construct == 1);
+        alloc.deallocate(a2, 1);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/deallocate.pass.cpp
new file mode 100644
index 0000000..2f153ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/deallocate.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     static constexpr void deallocate(allocator_type& a, pointer p, size_type n);
+//     ...
+// };
+
+#include <memory>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 A(int& called) : called_(called) {}
+
+    TEST_CONSTEXPR_CXX20 void deallocate(value_type* p, std::size_t n)
+    {
+        assert(p == &storage);
+        assert(n == 10);
+        ++called_;
+    }
+
+    int& called_;
+
+    value_type storage;
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        int called = 0;
+        A<int> a(called);
+        std::allocator_traits<A<int> >::deallocate(a, &a.storage, 10);
+        assert(called == 1);
+    }
+    {
+        int called = 0;
+        typedef A<IncompleteHolder*> Alloc;
+        Alloc a(called);
+        std::allocator_traits<Alloc>::deallocate(a, &a.storage, 10);
+        assert(called == 1);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/destroy.pass.cpp
new file mode 100644
index 0000000..047b7c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/destroy.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     template <class Ptr>
+//     static constexpr void destroy(allocator_type& a, Ptr p);
+//     ...
+// };
+
+#include <memory>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct NoDestroy
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 T* allocate(std::size_t n)
+    {
+        return std::allocator<T>().allocate(n);
+    }
+
+    TEST_CONSTEXPR_CXX20 void deallocate(T* p, std::size_t n)
+    {
+        return std::allocator<T>().deallocate(p, n);
+    }
+};
+
+template <class T>
+struct CountDestroy
+{
+    TEST_CONSTEXPR explicit CountDestroy(int* counter)
+        : counter_(counter)
+    { }
+
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 T* allocate(std::size_t n)
+    {
+        return std::allocator<T>().allocate(n);
+    }
+
+    TEST_CONSTEXPR_CXX20 void deallocate(T* p, std::size_t n)
+    {
+        return std::allocator<T>().deallocate(p, n);
+    }
+
+    template <class U>
+    TEST_CONSTEXPR_CXX20 void destroy(U* p)
+    {
+        ++*counter_;
+        p->~U();
+    }
+
+    int* counter_;
+};
+
+struct CountDestructor
+{
+    TEST_CONSTEXPR explicit CountDestructor(int* counter)
+        : counter_(counter)
+    { }
+
+    TEST_CONSTEXPR_CXX20 ~CountDestructor() { ++*counter_; }
+
+    int* counter_;
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        typedef NoDestroy<CountDestructor> Alloc;
+        int destructors = 0;
+        Alloc alloc;
+        CountDestructor* pool = std::allocator_traits<Alloc>::allocate(alloc, 1);
+
+        std::allocator_traits<Alloc>::construct(alloc, pool, &destructors);
+        assert(destructors == 0);
+
+        std::allocator_traits<Alloc>::destroy(alloc, pool);
+        assert(destructors == 1);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 1);
+    }
+    {
+        typedef IncompleteHolder* T;
+        typedef NoDestroy<T> Alloc;
+        Alloc alloc;
+        T* pool = std::allocator_traits<Alloc>::allocate(alloc, 1);
+        std::allocator_traits<Alloc>::construct(alloc, pool, nullptr);
+        std::allocator_traits<Alloc>::destroy(alloc, pool);
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 1);
+    }
+    {
+        typedef CountDestroy<CountDestructor> Alloc;
+        int destroys_called = 0;
+        int destructors_called = 0;
+        Alloc alloc(&destroys_called);
+
+        CountDestructor* pool = std::allocator_traits<Alloc>::allocate(alloc, 1);
+        std::allocator_traits<Alloc>::construct(alloc, pool, &destructors_called);
+        assert(destroys_called == 0);
+        assert(destructors_called == 0);
+
+        std::allocator_traits<Alloc>::destroy(alloc, pool);
+        assert(destroys_called == 1);
+        assert(destructors_called == 1);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 1);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/incomplete_type_helper.h b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/incomplete_type_helper.h
new file mode 100644
index 0000000..7662338
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/incomplete_type_helper.h
@@ -0,0 +1,14 @@
+#ifndef TEST_INCOMPLETE_TYPE_HELPER_H
+#define TEST_INCOMPLETE_TYPE_HELPER_H
+
+#include "min_allocator.h"
+
+namespace NS {
+  struct Incomplete;
+}
+
+template <class T> struct Holder { T value; };
+
+typedef Holder<NS::Incomplete> IncompleteHolder;
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/max_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/max_size.pass.cpp
new file mode 100644
index 0000000..301078e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/max_size.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     static constexpr size_type max_size(const allocator_type& a) noexcept;
+//     ...
+// };
+
+#include <limits>
+#include <memory>
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 size_t max_size() const
+    {
+        return 100;
+    }
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        B<int> b;
+        assert(std::allocator_traits<B<int> >::max_size(b) == 100);
+    }
+    {
+        const B<int> b = {};
+        assert(std::allocator_traits<B<int> >::max_size(b) == 100);
+    }
+    {
+        typedef IncompleteHolder* VT;
+        typedef B<VT> Alloc;
+        Alloc a;
+        assert(std::allocator_traits<Alloc >::max_size(a) == 100);
+    }
+#if TEST_STD_VER >= 11
+    {
+        A<int> a;
+        assert(std::allocator_traits<A<int> >::max_size(a) ==
+               std::numeric_limits<std::size_t>::max() / sizeof(int));
+    }
+    {
+        const A<int> a = {};
+        assert(std::allocator_traits<A<int> >::max_size(a) ==
+               std::numeric_limits<std::size_t>::max() / sizeof(int));
+    }
+    {
+        std::allocator<int> a;
+        static_assert(noexcept(std::allocator_traits<std::allocator<int>>::max_size(a)) == true, "");
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/select_on_container_copy_construction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/select_on_container_copy_construction.pass.cpp
new file mode 100644
index 0000000..231f173
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.members/select_on_container_copy_construction.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     static constexpr allocator_type
+//         select_on_container_copy_construction(const allocator_type& a);
+//     ...
+// };
+
+#include <memory>
+#include <new>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "incomplete_type_helper.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    int id;
+    TEST_CONSTEXPR_CXX20 explicit A(int i = 0) : id(i) {}
+
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+
+    int id;
+    TEST_CONSTEXPR_CXX20 explicit B(int i = 0) : id(i) {}
+
+    TEST_CONSTEXPR_CXX20 B select_on_container_copy_construction() const
+    {
+        return B(100);
+    }
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        A<int> a;
+        assert(std::allocator_traits<A<int> >::select_on_container_copy_construction(a).id == 0);
+    }
+    {
+        const A<int> a(0);
+        assert(std::allocator_traits<A<int> >::select_on_container_copy_construction(a).id == 0);
+    }
+    {
+        typedef IncompleteHolder* VT;
+        typedef A<VT> Alloc;
+        Alloc a;
+        assert(std::allocator_traits<Alloc>::select_on_container_copy_construction(a).id == 0);
+    }
+#if TEST_STD_VER >= 11
+    {
+        B<int> b;
+        assert(std::allocator_traits<B<int> >::select_on_container_copy_construction(b).id == 100);
+    }
+    {
+        const B<int> b(0);
+        assert(std::allocator_traits<B<int> >::select_on_container_copy_construction(b).id == 100);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/const_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/const_pointer.pass.cpp
new file mode 100644
index 0000000..756958b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/const_pointer.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::const_pointer
+//           | pointer_traits<pointer>::rebind<const value_type>
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct Ptr {};
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef Ptr<T> pointer;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct CPtr {};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+    typedef CPtr<T> pointer;
+    typedef CPtr<const T> const_pointer;
+};
+
+template <class T>
+struct D {
+  typedef T value_type;
+private:
+  typedef void const_pointer;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::const_pointer, Ptr<const char> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::const_pointer, const char*>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::const_pointer, CPtr<const char> >::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<D<char> >::const_pointer, const char*>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/const_void_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/const_void_pointer.pass.cpp
new file mode 100644
index 0000000..4fcc2fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/const_void_pointer.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::const_void_pointer
+//           | pointer_traits<pointer>::rebind<const void>
+//                                          const_void_pointer;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct Ptr {};
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef Ptr<T> pointer;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct CPtr {};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+    typedef CPtr<const void> const_void_pointer;
+};
+
+
+template <class T>
+struct D
+{
+    typedef T value_type;
+private:
+    typedef int const_void_pointer;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::const_void_pointer, Ptr<const void> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::const_void_pointer, const void*>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::const_void_pointer, CPtr<const void> >::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<D<char> >::const_void_pointer, const void*>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/difference_type.pass.cpp
new file mode 100644
index 0000000..35721f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/difference_type.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::difference_type
+//           | pointer_traits<pointer>::difference_type         difference_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef short difference_type;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+    struct pointer {};
+    struct const_pointer {};
+    struct void_pointer {};
+    struct const_void_pointer {};
+};
+
+
+template <class T>
+struct D
+{
+    typedef T value_type;
+private:
+    typedef void difference_type;
+};
+
+namespace std
+{
+
+template <>
+struct pointer_traits<C<char>::pointer>
+{
+    typedef C<char>::pointer pointer;
+    typedef char             element_type;
+    typedef signed char      difference_type;
+};
+
+}
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::difference_type, short>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::difference_type, signed char>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<D<char> >::difference_type, std::ptrdiff_t>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/is_always_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/is_always_equal.pass.cpp
new file mode 100644
index 0000000..add8c0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/is_always_equal.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//   typedef Alloc::is_always_equal
+//         | is_empty                     is_always_equal;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef std::true_type is_always_equal;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+    int not_empty_;  // some random member variable
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::is_always_equal, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::is_always_equal, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::is_always_equal, std::false_type>::value), "");
+
+    static_assert((std::is_same<std::allocator_traits<A<const char> >::is_always_equal, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<const char> >::is_always_equal, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<const char> >::is_always_equal, std::false_type>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/pointer.pass.cpp
new file mode 100644
index 0000000..58b3066
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/pointer.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::pointer | value_type* pointer;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct Ptr {};
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef Ptr<T> pointer;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct C {
+    typedef T value_type;
+private:
+    typedef void pointer;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::pointer, Ptr<char> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::pointer, char*>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<C<char> >::pointer, char*>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_copy_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_copy_assignment.pass.cpp
new file mode 100644
index 0000000..b049159
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_copy_assignment.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::propagate_on_container_copy_assignment
+//           | false_type                   propagate_on_container_copy_assignment;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_copy_assignment;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+private:
+    typedef std::true_type propagate_on_container_copy_assignment;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::propagate_on_container_copy_assignment, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::propagate_on_container_copy_assignment, std::false_type>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<C<char> >::propagate_on_container_copy_assignment, std::false_type>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_move_assignment.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_move_assignment.pass.cpp
new file mode 100644
index 0000000..602ba96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_move_assignment.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::propagate_on_container_move_assignment
+//           | false_type                   propagate_on_container_move_assignment;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_move_assignment;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+private:
+    typedef std::true_type propagate_on_container_move_assignment;
+};
+
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::propagate_on_container_move_assignment, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::propagate_on_container_move_assignment, std::false_type>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<C<char> >::propagate_on_container_move_assignment, std::false_type>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_swap.pass.cpp
new file mode 100644
index 0000000..5ae5301
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/propagate_on_container_swap.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::propagate_on_container_swap
+//           | false_type                   propagate_on_container_swap;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef std::true_type propagate_on_container_swap;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+private:
+    typedef std::true_type propagate_on_container_swap;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::propagate_on_container_swap, std::true_type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::propagate_on_container_swap, std::false_type>::value), "");
+ #if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<C<char> >::propagate_on_container_swap, std::false_type>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/rebind_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/rebind_alloc.pass.cpp
new file mode 100644
index 0000000..d0d8476
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/rebind_alloc.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     template <class T> using rebind_alloc  = Alloc::rebind<U>::other | Alloc<T, Args...>;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct ReboundA {};
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+    template <class U> struct rebind {typedef ReboundA<U> other;};
+};
+
+template <class T, class U>
+struct ReboundB {};
+
+template <class T, class U>
+struct B
+{
+    typedef T value_type;
+
+    template <class V> struct rebind {typedef ReboundB<V, U> other;};
+};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+};
+
+template <class T, class U>
+struct D
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct E
+{
+    typedef T value_type;
+
+    template <class U> struct rebind {typedef ReboundA<U> otter;};
+};
+
+template <class T>
+struct F {
+    typedef T value_type;
+private:
+    template <class>
+    struct rebind { typedef void other; };
+};
+
+template <class T>
+struct G {
+    typedef T value_type;
+    template <class>
+    struct rebind {
+    private:
+        typedef void other;
+    };
+};
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<A<char> >::rebind_alloc<double>, ReboundA<double> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<int, char> >::rebind_alloc<double>, ReboundB<double, char> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::rebind_alloc<double>, C<double> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<D<int, char> >::rebind_alloc<double>, D<double, char> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<E<char> >::rebind_alloc<double>, E<double> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<F<char> >::rebind_alloc<double>, F<double> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<G<char> >::rebind_alloc<double>, G<double> >::value), "");
+#else
+    static_assert((std::is_same<std::allocator_traits<A<char> >::rebind_alloc<double>::other, ReboundA<double> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<int, char> >::rebind_alloc<double>::other, ReboundB<double, char> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::rebind_alloc<double>::other, C<double> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<D<int, char> >::rebind_alloc<double>::other, D<double, char> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<E<char> >::rebind_alloc<double>::other, E<double> >::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/size_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/size_type.pass.cpp
new file mode 100644
index 0000000..cd74671
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/size_type.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::size_type | size_t    size_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef unsigned short size_type;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+    struct pointer {};
+    struct const_pointer {};
+    struct void_pointer {};
+    struct const_void_pointer {};
+};
+
+template <class T>
+struct D {
+    typedef T value_type;
+    typedef short difference_type;
+private:
+    typedef void size_type;
+};
+
+namespace std
+{
+
+template <>
+struct pointer_traits<C<char>::pointer>
+{
+    typedef signed char difference_type;
+};
+
+}
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::size_type, unsigned short>::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::size_type,
+                   std::make_unsigned<std::ptrdiff_t>::type>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::size_type,
+                   unsigned char>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<D<char> >::size_type, unsigned short>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/void_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/void_pointer.pass.cpp
new file mode 100644
index 0000000..55954dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator.traits.types/void_pointer.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc::void_pointer
+//           | pointer_traits<pointer>::rebind<void>
+//                                          void_pointer;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+struct Ptr {};
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+    typedef Ptr<T> pointer;
+};
+
+template <class T>
+struct B
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct CPtr {};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+    typedef CPtr<void> void_pointer;
+};
+
+
+template <class T>
+struct D
+{
+    typedef T value_type;
+private:
+    typedef void void_pointer;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::void_pointer, Ptr<void> >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<char> >::void_pointer, void*>::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::void_pointer, CPtr<void> >::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<D<char> >::void_pointer, void*>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator_type.pass.cpp
new file mode 100644
index 0000000..b3b6d72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/allocator_type.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc allocator_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::allocator_type, A<char> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/rebind_traits.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/rebind_traits.pass.cpp
new file mode 100644
index 0000000..01aac94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/rebind_traits.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     template <class T> using rebind_traits = allocator_traits<rebind_alloc<T>>;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct ReboundA {};
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+
+    template <class U> struct rebind {typedef ReboundA<U> other;};
+};
+
+template <class T, class U>
+struct ReboundB {};
+
+template <class T, class U>
+struct B
+{
+    typedef T value_type;
+
+    template <class V> struct rebind {typedef ReboundB<V, U> other;};
+};
+
+template <class T>
+struct C
+{
+    typedef T value_type;
+};
+
+template <class T, class U>
+struct D
+{
+    typedef T value_type;
+};
+
+template <class T>
+struct E
+{
+    typedef T value_type;
+
+    template <class U> struct rebind {typedef ReboundA<U> otter;};
+};
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::allocator_traits<A<char> >::rebind_traits<double>, std::allocator_traits<ReboundA<double> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<int, char> >::rebind_traits<double>, std::allocator_traits<ReboundB<double, char> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::rebind_traits<double>, std::allocator_traits<C<double> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<D<int, char> >::rebind_traits<double>, std::allocator_traits<D<double, char> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<E<char> >::rebind_traits<double>, std::allocator_traits<E<double> > >::value), "");
+#else
+    static_assert((std::is_same<std::allocator_traits<A<char> >::rebind_traits<double>::other, std::allocator_traits<ReboundA<double> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<B<int, char> >::rebind_traits<double>::other, std::allocator_traits<ReboundB<double, char> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<C<char> >::rebind_traits<double>::other, std::allocator_traits<C<double> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<D<int, char> >::rebind_traits<double>::other, std::allocator_traits<D<double, char> > >::value), "");
+    static_assert((std::is_same<std::allocator_traits<E<char> >::rebind_traits<double>::other, std::allocator_traits<E<double> > >::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/value_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/value_type.pass.cpp
new file mode 100644
index 0000000..b7cc2cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.traits/value_type.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef typename Alloc::value_type value_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+    typedef T value_type;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::allocator_traits<A<char> >::value_type, char>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/common.h b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/common.h
new file mode 100644
index 0000000..48b0fa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/common.h
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "test_allocator.h"
+
+using Alloc = test_allocator<int>;
+
+enum class RefType {
+  LValue,
+  ConstLValue,
+  RValue,
+  ConstRValue,
+};
+
+struct UsesAllocArgT {
+  using allocator_type = Alloc;
+
+  bool allocator_constructed_ = false;
+  Alloc a_;
+  const Alloc& alloc_ = a_;
+  const int* val_ptr_;
+  RefType ref_type_;
+
+  constexpr UsesAllocArgT() = default;
+  constexpr UsesAllocArgT(std::allocator_arg_t, const Alloc& alloc) : allocator_constructed_(true), alloc_(alloc) {}
+  constexpr UsesAllocArgT(std::allocator_arg_t, const Alloc& alloc, int& val)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::LValue) {}
+  constexpr UsesAllocArgT(std::allocator_arg_t, const Alloc& alloc, const int& val)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::ConstLValue) {}
+  constexpr UsesAllocArgT(std::allocator_arg_t, const Alloc& alloc, int&& val)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::RValue) {}
+  constexpr UsesAllocArgT(std::allocator_arg_t, const Alloc& alloc, const int&& val)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::ConstRValue) {}
+};
+
+struct UsesAllocLast {
+  using allocator_type = Alloc;
+
+  bool allocator_constructed_ = false;
+  Alloc a_;
+  const Alloc& alloc_ = a_;
+  const int* val_ptr_;
+  RefType ref_type_;
+
+  constexpr UsesAllocLast() = default;
+  constexpr UsesAllocLast(const Alloc& alloc) : allocator_constructed_(true), alloc_(alloc) {}
+  constexpr UsesAllocLast(int& val, const Alloc& alloc)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::LValue) {}
+  constexpr UsesAllocLast(const int& val, const Alloc& alloc)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::ConstLValue) {}
+  constexpr UsesAllocLast(int&& val, const Alloc& alloc)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::RValue) {}
+  constexpr UsesAllocLast(const int&& val, const Alloc& alloc)
+      : allocator_constructed_(true), alloc_(alloc), val_ptr_(&val), ref_type_(RefType::ConstRValue) {}
+};
+
+struct NotAllocatorAware {
+  bool allocator_constructed_ = false;
+
+  constexpr NotAllocatorAware() = default;
+  constexpr NotAllocatorAware(const Alloc&) : allocator_constructed_(true) {}
+  constexpr NotAllocatorAware(const Alloc&, int) : allocator_constructed_(true) {}
+};
+
+struct ConvertibleToPair {
+  constexpr operator std::pair<int, int>() const { return {1, 2}; }
+};
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/make_obj_using_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/make_obj_using_allocator.pass.cpp
new file mode 100644
index 0000000..1f60514
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/make_obj_using_allocator.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template<class T, class Alloc, class... Args>
+//   constexpr T make_obj_using_allocator(const Alloc& alloc, Args&&... args);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+#include <concepts>
+#include <memory>
+#include <tuple>
+#include <utility>
+
+#include "common.h"
+#include "test_allocator.h"
+
+constexpr bool test() {
+  Alloc a(12);
+  {
+    std::same_as<UsesAllocArgT> auto ret = std::make_obj_using_allocator<UsesAllocArgT>(a);
+    assert(ret.allocator_constructed_);
+    assert(&ret.alloc_ == &a);
+  }
+  {
+    std::same_as<UsesAllocLast> auto ret = std::make_obj_using_allocator<UsesAllocLast>(a);
+    assert(ret.allocator_constructed_);
+    assert(&ret.alloc_ == &a);
+  }
+  {
+    std::same_as<NotAllocatorAware> auto ret = std::make_obj_using_allocator<NotAllocatorAware>(a);
+    assert(!ret.allocator_constructed_);
+  }
+  {
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(
+            a, std::piecewise_construct, std::tuple<>{}, std::tuple<>{});
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+  }
+  {
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(a);
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+  }
+  {
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(a, 0, 0);
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+  }
+#if TEST_STD_VER >= 23
+  {
+    std::pair p{0, 0};
+
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(a, p);
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.first.ref_type_ == RefType::LValue);
+    assert(ret.first.val_ptr_ == &p.first);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+    assert(ret.second.ref_type_ == RefType::LValue);
+    assert(ret.second.val_ptr_ == &p.second);
+  }
+#endif
+  {
+    std::pair p{0, 0};
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(a, std::as_const(p));
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.first.ref_type_ == RefType::ConstLValue);
+    assert(ret.first.val_ptr_ == &p.first);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+    assert(ret.second.ref_type_ == RefType::ConstLValue);
+    assert(ret.second.val_ptr_ == &p.second);
+  }
+  {
+    std::pair p{0, 0};
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(a, std::move(p));
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.first.ref_type_ == RefType::RValue);
+    assert(ret.first.val_ptr_ == &p.first);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+    assert(ret.second.ref_type_ == RefType::RValue);
+    assert(ret.second.val_ptr_ == &p.second);
+  }
+#if TEST_STD_VER >= 23
+  {
+    std::pair p{0, 0};
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>> auto ret =
+        std::make_obj_using_allocator<std::pair<UsesAllocArgT, UsesAllocLast>>(a, std::move(std::as_const(p)));
+    assert(ret.first.allocator_constructed_);
+    assert(&ret.first.alloc_ == &a);
+    assert(ret.first.ref_type_ == RefType::ConstRValue);
+    assert(ret.first.val_ptr_ == &p.first);
+    assert(ret.second.allocator_constructed_);
+    assert(&ret.second.alloc_ == &a);
+    assert(ret.second.ref_type_ == RefType::ConstRValue);
+    assert(ret.second.val_ptr_ == &p.second);
+  }
+#endif
+  {
+    ConvertibleToPair ctp;
+    std::same_as<std::pair<int, int>> auto ret = std::make_obj_using_allocator<std::pair<int, int>>(a, ctp);
+    assert(ret.first == 1);
+    assert(ret.second == 2);
+  }
+  {
+    ConvertibleToPair ctp;
+    std::same_as<std::pair<int, int>> auto ret = std::make_obj_using_allocator<std::pair<int, int>>(a, std::move(ctp));
+    assert(ret.first == 1);
+    assert(ret.second == 2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uninitialized_construct_using_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uninitialized_construct_using_allocator.pass.cpp
new file mode 100644
index 0000000..07260e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uninitialized_construct_using_allocator.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template<class T, class Alloc, class... Args>
+//   constexpr T uninitialized_construct_using_allocator(const Alloc& alloc, Args&&... args);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+#include <concepts>
+#include <memory>
+#include <tuple>
+#include <utility>
+
+#include "common.h"
+#include "test_allocator.h"
+
+constexpr bool test() {
+  Alloc a(12);
+  {
+    auto* ptr                             = std::allocator<UsesAllocArgT>{}.allocate(1);
+    std::same_as<UsesAllocArgT*> auto ret = std::uninitialized_construct_using_allocator(ptr, a);
+    assert(ret == ptr);
+    assert(ret->allocator_constructed_);
+    assert(&ret->alloc_ == &a);
+    std::allocator<UsesAllocArgT>{}.deallocate(ptr, 1);
+  }
+  {
+    auto* ptr                             = std::allocator<UsesAllocLast>{}.allocate(1);
+    std::same_as<UsesAllocLast*> auto ret = std::uninitialized_construct_using_allocator(ptr, a);
+    assert(ret->allocator_constructed_);
+    assert(&ret->alloc_ == &a);
+    std::allocator<UsesAllocLast>{}.deallocate(ptr, 1);
+  }
+  {
+    auto* ptr                                 = std::allocator<NotAllocatorAware>{}.allocate(1);
+    std::same_as<NotAllocatorAware*> auto ret = std::uninitialized_construct_using_allocator(ptr, a);
+    assert(!ret->allocator_constructed_);
+    std::allocator<NotAllocatorAware>{}.deallocate(ptr, 1);
+  }
+  {
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, std::piecewise_construct, std::tuple<>{}, std::tuple<>{});
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+  {
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a);
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+  {
+    int val   = 0;
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, val, val);
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->first.ref_type_ == RefType::LValue);
+    assert(ret->first.val_ptr_ == &val);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    assert(ret->second.ref_type_ == RefType::LValue);
+    assert(ret->second.val_ptr_ == &val);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+  {
+    int val   = 0;
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, std::move(val), std::move(val));
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->first.ref_type_ == RefType::RValue);
+    assert(ret->first.val_ptr_ == &val);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    assert(ret->second.ref_type_ == RefType::RValue);
+    assert(ret->second.val_ptr_ == &val);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+#if TEST_STD_VER >= 23
+  {
+    std::pair p{0, 0};
+
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, p);
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->first.ref_type_ == RefType::LValue);
+    assert(ret->first.val_ptr_ == &p.first);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    assert(ret->second.ref_type_ == RefType::LValue);
+    assert(ret->second.val_ptr_ == &p.second);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+#endif
+  {
+    std::pair p{0, 0};
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, std::as_const(p));
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->first.ref_type_ == RefType::ConstLValue);
+    assert(ret->first.val_ptr_ == &p.first);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    assert(ret->second.ref_type_ == RefType::ConstLValue);
+    assert(ret->second.val_ptr_ == &p.second);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+  {
+    std::pair p{0, 0};
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, std::move(p));
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->first.ref_type_ == RefType::RValue);
+    assert(ret->first.val_ptr_ == &p.first);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    assert(ret->second.ref_type_ == RefType::RValue);
+    assert(ret->second.val_ptr_ == &p.second);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+#if TEST_STD_VER >= 23
+  {
+    std::pair p{0, 0};
+    auto* ptr = std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.allocate(1);
+    std::same_as<std::pair<UsesAllocArgT, UsesAllocLast>*> auto ret =
+        std::uninitialized_construct_using_allocator(ptr, a, std::move(std::as_const(p)));
+    assert(ret->first.allocator_constructed_);
+    assert(&ret->first.alloc_ == &a);
+    assert(ret->first.ref_type_ == RefType::ConstRValue);
+    assert(ret->first.val_ptr_ == &p.first);
+    assert(ret->second.allocator_constructed_);
+    assert(&ret->second.alloc_ == &a);
+    assert(ret->second.ref_type_ == RefType::ConstRValue);
+    assert(ret->second.val_ptr_ == &p.second);
+    std::allocator<std::pair<UsesAllocArgT, UsesAllocLast>>{}.deallocate(ptr, 1);
+  }
+#endif
+  {
+    ConvertibleToPair ctp;
+    auto* ptr                                   = std::allocator<std::pair<int, int>>{}.allocate(1);
+    std::same_as<std::pair<int, int>*> auto ret = std::uninitialized_construct_using_allocator(ptr, a, ctp);
+    assert(ret == ptr);
+    assert(ret->first == 1);
+    assert(ret->second == 2);
+    std::allocator<std::pair<int, int>>{}.deallocate(ptr, 1);
+  }
+  {
+    ConvertibleToPair ctp;
+    auto* ptr                                   = std::allocator<std::pair<int, int>>{}.allocate(1);
+    std::same_as<std::pair<int, int>*> auto ret = std::uninitialized_construct_using_allocator(ptr, a, std::move(ctp));
+    assert(ret == ptr);
+    assert(ret->first == 1);
+    assert(ret->second == 2);
+    std::allocator<std::pair<int, int>>{}.deallocate(ptr, 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uses_allocator_construction_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uses_allocator_construction_args.pass.cpp
new file mode 100644
index 0000000..739278e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.construction/uses_allocator_construction_args.pass.cpp
@@ -0,0 +1,155 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template<class T, class Alloc, ...>
+// constexpr auto uses_allocator_construction_args(const Alloc& alloc, ...) noexcept;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+#include <concepts>
+#include <memory>
+#include <tuple>
+#include <utility>
+
+#include "common.h"
+#include "test_allocator.h"
+
+template <class Type, class... Args>
+constexpr decltype(auto) test_uses_allocator_construction_args(Args&&... args) {
+  static_assert(noexcept(std::uses_allocator_construction_args<Type>(std::forward<Args>(args)...)));
+  return std::uses_allocator_construction_args<Type>(std::forward<Args>(args)...);
+}
+
+constexpr bool test() {
+  Alloc a(12);
+  {
+    std::same_as<std::tuple<std::allocator_arg_t, const Alloc&>> auto ret =
+        test_uses_allocator_construction_args<UsesAllocArgT>(a);
+    assert(std::get<1>(ret).get_data() == 12);
+  }
+  {
+    std::same_as<std::tuple<const Alloc&>> auto ret = test_uses_allocator_construction_args<UsesAllocLast>(a);
+    assert(std::get<0>(ret).get_data() == 12);
+  }
+  {
+    [[maybe_unused]] std::same_as<std::tuple<>> auto ret = test_uses_allocator_construction_args<NotAllocatorAware>(a);
+  }
+  {
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&>,
+                            std::tuple<const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(
+            a, std::piecewise_construct, std::tuple<>{}, std::tuple<>{});
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<0>(std::get<2>(ret)).get_data() == 12);
+  }
+  {
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&>,
+                            std::tuple<const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(a);
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<0>(std::get<2>(ret)).get_data() == 12);
+  }
+  {
+    int val = 0;
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&, int&>,
+                            std::tuple<int&, const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(a, val, val);
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<1>(std::get<2>(ret)).get_data() == 12);
+    assert(&std::get<2>(std::get<1>(ret)) == &val);
+    assert(&std::get<0>(std::get<2>(ret)) == &val);
+  }
+  {
+    int val = 0;
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&, int&&>,
+                            std::tuple<int&&, const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(
+            a, std::move(val), std::move(val));
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<1>(std::get<2>(ret)).get_data() == 12);
+    assert(&std::get<2>(std::get<1>(ret)) == &val);
+    assert(&std::get<0>(std::get<2>(ret)) == &val);
+  }
+#if TEST_STD_VER >= 23
+  {
+    std::pair p{3, 4};
+
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&, int&>,
+                            std::tuple<int&, const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(a, p);
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<1>(std::get<2>(ret)).get_data() == 12);
+    assert(std::get<2>(std::get<1>(ret)) == 3);
+    assert(std::get<0>(std::get<2>(ret)) == 4);
+  }
+#endif
+  {
+    std::pair p{3, 4};
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&, const int&>,
+                            std::tuple<const int&, const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(a, std::as_const(p));
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<1>(std::get<2>(ret)).get_data() == 12);
+    assert(std::get<2>(std::get<1>(ret)) == 3);
+    assert(std::get<0>(std::get<2>(ret)) == 4);
+  }
+  {
+    std::pair p{3, 4};
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&, int&&>,
+                            std::tuple<int&&, const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(a, std::move(p));
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<1>(std::get<2>(ret)).get_data() == 12);
+    assert(std::get<2>(std::get<1>(ret)) == 3);
+    assert(std::get<0>(std::get<2>(ret)) == 4);
+  }
+#if TEST_STD_VER >= 23
+  {
+    std::pair p{3, 4};
+    std::same_as<std::tuple<std::piecewise_construct_t,
+                            std::tuple<std::allocator_arg_t, const Alloc&, const int&&>,
+                            std::tuple<const int&&, const Alloc&>>> auto ret =
+        test_uses_allocator_construction_args<std::pair<UsesAllocArgT, UsesAllocLast>>(a, std::move(std::as_const(p)));
+    assert(std::get<1>(std::get<1>(ret)).get_data() == 12);
+    assert(std::get<1>(std::get<2>(ret)).get_data() == 12);
+    assert(std::get<2>(std::get<1>(ret)) == 3);
+    assert(std::get<0>(std::get<2>(ret)) == 4);
+  }
+#endif
+  {
+    ConvertibleToPair ctp {};
+    auto ret = test_uses_allocator_construction_args<std::pair<int, int>>(a, ctp);
+    std::pair<int, int> v = std::get<0>(ret);
+    assert(std::get<0>(v) == 1);
+    assert(std::get<1>(v) == 2);
+  }
+  {
+    ConvertibleToPair ctp {};
+    auto ret = test_uses_allocator_construction_args<std::pair<int, int>>(a, std::move(ctp));
+    std::pair<int, int> v = std::get<0>(ret);
+    assert(std::get<0>(v) == 1);
+    assert(std::get<1>(v) == 2);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.trait/uses_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.trait/uses_allocator.pass.cpp
new file mode 100644
index 0000000..d9d4fc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/allocator.uses/allocator.uses.trait/uses_allocator.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T, class Alloc> struct uses_allocator;
+
+#include <memory>
+#include <vector>
+
+#include "test_macros.h"
+
+struct A
+{
+};
+
+struct B
+{
+    typedef int allocator_type;
+};
+
+struct C {
+  static int allocator_type;
+};
+
+struct D {
+  static int allocator_type() { return 0; }
+};
+
+struct E {
+private:
+  typedef int allocator_type;
+};
+
+template <bool Expected, class T, class A>
+void
+test()
+{
+    static_assert((std::uses_allocator<T, A>::value == Expected), "");
+#if TEST_STD_VER > 14
+    static_assert((std::uses_allocator_v<T, A> == Expected), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<false, int, std::allocator<int> >();
+    test<true, std::vector<int>, std::allocator<int> >();
+    test<false, A, std::allocator<int> >();
+    test<false, B, std::allocator<int> >();
+    test<true, B, double>();
+    test<false, C, decltype(C::allocator_type)>();
+    test<false, D, decltype(D::allocator_type)>();
+#if TEST_STD_VER >= 11
+    test<false, E, int>();
+#endif
+
+
+//     static_assert((!std::uses_allocator<int, std::allocator<int> >::value), "");
+//     static_assert(( std::uses_allocator<std::vector<int>, std::allocator<int> >::value), "");
+//     static_assert((!std::uses_allocator<A, std::allocator<int> >::value), "");
+//     static_assert((!std::uses_allocator<B, std::allocator<int> >::value), "");
+//     static_assert(( std::uses_allocator<B, double>::value), "");
+//     static_assert((!std::uses_allocator<C, decltype(C::allocator_type)>::value), "");
+//     static_assert((!std::uses_allocator<D, decltype(D::allocator_type)>::value), "");
+// #if TEST_STD_VER >= 11
+//     static_assert((!std::uses_allocator<E, int>::value), "");
+// #endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/c.malloc/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/c.malloc/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..7e6c678
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/c.malloc/nothing_to_do.pass.cpp
@@ -0,0 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <cstdlib> and <cstring> are already tested elsewhere
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/PR50299.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/PR50299.compile.pass.cpp
new file mode 100644
index 0000000..245d3d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/PR50299.compile.pass.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Make sure we can use std::allocator<void> in all Standard modes. While the
+// explicit specialization for std::allocator<void> was deprecated, using that
+// specialization was neither deprecated nor removed (in C++20 it should simply
+// start using the primary template).
+//
+// See https://llvm.org/PR50299.
+
+#include <memory>
+
+std::allocator<void> a;
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.ctor.pass.cpp
new file mode 100644
index 0000000..6e6ff1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.ctor.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+//
+// template <class T>
+// class allocator
+// {
+// public: // All of these are constexpr after C++17
+//  allocator() noexcept;
+//  allocator(const allocator&) noexcept;
+//  template<class U> allocator(const allocator<U>&) noexcept;
+// ...
+// };
+
+#include <memory>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template<class T>
+TEST_CONSTEXPR_CXX20 bool test() {
+  typedef std::allocator<T> A1;
+  typedef std::allocator<long> A2;
+
+  A1 a1;
+  A1 a1_copy = a1; (void)a1_copy;
+  A2 a2 = a1; (void)a2;
+
+  return true;
+}
+
+int main(int, char**) {
+  test<char>();
+  test<char const>();
+  test<void>();
+
+#if TEST_STD_VER > 17
+  static_assert(test<char>());
+  static_assert(test<char const>());
+  static_assert(test<void>());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.dtor.pass.cpp
new file mode 100644
index 0000000..a095ca1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.dtor.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T>
+// constexpr allocator<T>::~allocator();
+
+#include <memory>
+
+template <typename T>
+constexpr bool test() {
+    std::allocator<T> alloc;
+    (void)alloc;
+
+    // destructor called here
+    return true;
+}
+
+int main(int, char**)
+{
+    test<int>();
+    test<void>();
+#ifdef _LIBCPP_VERSION // extension
+    test<int const>();
+#endif // _LIBCPP_VERSION
+
+    static_assert(test<int>());
+    static_assert(test<void>());
+#ifdef _LIBCPP_VERSION // extension
+    static_assert(test<int const>());
+#endif // _LIBCPP_VERSION
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.globals/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.globals/eq.pass.cpp
new file mode 100644
index 0000000..0f568d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.globals/eq.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+
+// template <class T1, class T2>
+//   constexpr bool
+//   operator==(const allocator<T1>&, const allocator<T2>&) throw();
+//
+// template <class T1, class T2>
+//   constexpr bool
+//   operator!=(const allocator<T1>&, const allocator<T2>&) throw();
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    std::allocator<int> a1;
+    std::allocator<int> a2;
+    assert(a1 == a2);
+    assert(!(a1 != a2));
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.constexpr.size.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.constexpr.size.verify.cpp
new file mode 100644
index 0000000..717ba0d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.constexpr.size.verify.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// constexpr T* allocate(size_type n);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <cstddef>
+#include <memory>
+
+#include "test_macros.h"
+
+template <typename T>
+constexpr bool test()
+{
+    typedef std::allocator<T> A;
+    typedef std::allocator_traits<A> AT;
+    A a;
+    TEST_IGNORE_NODISCARD a.allocate(AT::max_size(a) + 1);           // just barely too large
+    TEST_IGNORE_NODISCARD a.allocate(AT::max_size(a) * 2);           // significantly too large
+    TEST_IGNORE_NODISCARD a.allocate(((size_t) -1) / sizeof(T) + 1); // multiply will overflow
+    TEST_IGNORE_NODISCARD a.allocate((size_t) -1);                   // way too large
+
+    return true;
+}
+
+int main(int, char**)
+{
+    static_assert(test<double>()); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    LIBCPP_STATIC_ASSERT(test<const double>()); // expected-error-re {{{{(static_assert|static assertion)}} expression is not an integral constant expression}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.pass.cpp
new file mode 100644
index 0000000..49c7a0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// allocator:
+// constexpr T* allocate(size_t n);
+
+#include <memory>
+#include <cassert>
+#include <cstddef>       // for std::max_align_t
+
+#include "test_macros.h"
+#include "count_new.h"
+
+
+#ifdef TEST_HAS_NO_ALIGNED_ALLOCATION
+static const bool UsingAlignedNew = false;
+#else
+static const bool UsingAlignedNew = true;
+#endif
+
+#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__
+static const size_t MaxAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__;
+#else
+static const size_t MaxAligned = std::alignment_of<std::max_align_t>::value;
+#endif
+
+static const size_t OverAligned = MaxAligned * 2;
+
+
+template <size_t Align>
+struct TEST_ALIGNAS(Align) AlignedType {
+  char data;
+  static int constructed;
+  AlignedType() { ++constructed; }
+  AlignedType(AlignedType const&) { ++constructed; }
+  ~AlignedType() { --constructed; }
+};
+template <size_t Align>
+int AlignedType<Align>::constructed = 0;
+
+
+template <size_t Align>
+void test_aligned() {
+  typedef AlignedType<Align> T;
+  T::constructed = 0;
+  globalMemCounter.reset();
+  std::allocator<T> a;
+  const bool IsOverAlignedType = Align > MaxAligned;
+  const bool ExpectAligned = IsOverAlignedType && UsingAlignedNew;
+  {
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(T::constructed == 0);
+    globalMemCounter.last_new_size = 0;
+    globalMemCounter.last_new_align = 0;
+    T* ap = a.allocate(3);
+    DoNotOptimize(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(globalMemCounter.checkNewCalledEq(1));
+    assert(globalMemCounter.checkAlignedNewCalledEq(ExpectAligned));
+    assert(globalMemCounter.checkLastNewSizeEq(3 * sizeof(T)));
+    assert(globalMemCounter.checkLastNewAlignEq(ExpectAligned ? Align : 0));
+    assert(T::constructed == 0);
+    globalMemCounter.last_delete_align = 0;
+    a.deallocate(ap, 3);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(globalMemCounter.checkDeleteCalledEq(1));
+    assert(globalMemCounter.checkAlignedDeleteCalledEq(ExpectAligned));
+    assert(globalMemCounter.checkLastDeleteAlignEq(ExpectAligned ? Align : 0));
+    assert(T::constructed == 0);
+  }
+}
+
+#if TEST_STD_VER > 17
+template <size_t Align>
+constexpr bool test_aligned_constexpr() {
+    typedef AlignedType<Align> T;
+    std::allocator<T> a;
+    T* ap = a.allocate(3);
+    a.deallocate(ap, 3);
+
+    return true;
+}
+#endif
+
+int main(int, char**) {
+    test_aligned<1>();
+    test_aligned<2>();
+    test_aligned<4>();
+    test_aligned<8>();
+    test_aligned<16>();
+    test_aligned<MaxAligned>();
+    test_aligned<OverAligned>();
+    test_aligned<OverAligned * 2>();
+
+#if TEST_STD_VER > 17
+    static_assert(test_aligned_constexpr<1>());
+    static_assert(test_aligned_constexpr<2>());
+    static_assert(test_aligned_constexpr<4>());
+    static_assert(test_aligned_constexpr<8>());
+    static_assert(test_aligned_constexpr<16>());
+    static_assert(test_aligned_constexpr<MaxAligned>());
+    static_assert(test_aligned_constexpr<OverAligned>());
+    static_assert(test_aligned_constexpr<OverAligned * 2>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp
new file mode 100644
index 0000000..3622b7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.size.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <memory>
+
+// allocator:
+// constexpr T* allocate(size_t n);
+
+#include <memory>
+#include <cassert>
+#include <new>
+
+#include "test_macros.h"
+
+template <typename T>
+void test_max(size_t count)
+{
+    std::allocator<T> a;
+    try {
+        TEST_IGNORE_NODISCARD a.allocate(count);
+        assert(false);
+    } catch (const std::bad_array_new_length &) {
+    }
+}
+
+template <typename T>
+void test()
+{
+    // Bug 26812 -- allocating too large
+    typedef std::allocator<T> A;
+    typedef std::allocator_traits<A> AT;
+    A a;
+    test_max<T> (AT::max_size(a) + 1);             // just barely too large
+    test_max<T> (AT::max_size(a) * 2);             // significantly too large
+    test_max<T> (((size_t) -1) / sizeof(T) + 1);   // multiply will overflow
+    test_max<T> ((size_t) -1);                     // way too large
+}
+
+int main(int, char**)
+{
+    test<double>();
+    LIBCPP_ONLY(test<const double>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.verify.cpp
new file mode 100644
index 0000000..c19710a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// allocator:
+// T* allocate(size_t n);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::allocator<int> a;
+    a.allocate(3); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate_at_least.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate_at_least.pass.cpp
new file mode 100644
index 0000000..6ac63a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator.members/allocate_at_least.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <memory>
+
+// allocation_result<T*> allocate_at_least(size_t n)
+
+#include <cassert>
+#include <concepts>
+#include <memory>
+
+#include "count_new.h"
+
+#ifdef TEST_HAS_NO_ALIGNED_ALLOCATION
+static const bool UsingAlignedNew = false;
+#else
+static const bool UsingAlignedNew = true;
+#endif
+
+#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__
+static const size_t MaxAligned = __STDCPP_DEFAULT_NEW_ALIGNMENT__;
+#else
+static const size_t MaxAligned = std::alignment_of<std::max_align_t>::value;
+#endif
+
+static const size_t OverAligned = MaxAligned * 2;
+
+template <size_t Align>
+struct alignas(Align) AlignedType {
+  char data;
+  static int constructed;
+  AlignedType() { ++constructed; }
+  AlignedType(AlignedType const&) { ++constructed; }
+  ~AlignedType() { --constructed; }
+};
+template <size_t Align>
+int AlignedType<Align>::constructed = 0;
+
+
+template <size_t Align>
+void test_aligned() {
+  typedef AlignedType<Align> T;
+  T::constructed = 0;
+  globalMemCounter.reset();
+  std::allocator<T> a;
+  const bool IsOverAlignedType = Align > MaxAligned;
+  const bool ExpectAligned = IsOverAlignedType && UsingAlignedNew;
+  {
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(T::constructed == 0);
+    globalMemCounter.last_new_size = 0;
+    globalMemCounter.last_new_align = 0;
+    std::same_as<std::allocation_result<T*>> decltype(auto) ap = a.allocate_at_least(3);
+    assert(ap.count >= 3);
+    DoNotOptimize(ap);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(globalMemCounter.checkNewCalledEq(1));
+    assert(globalMemCounter.checkAlignedNewCalledEq(ExpectAligned));
+    assert(globalMemCounter.checkLastNewSizeEq(3 * sizeof(T)));
+    assert(globalMemCounter.checkLastNewAlignEq(ExpectAligned ? Align : 0));
+    assert(T::constructed == 0);
+    globalMemCounter.last_delete_align = 0;
+    a.deallocate(ap.ptr, 3);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    assert(globalMemCounter.checkDeleteCalledEq(1));
+    assert(globalMemCounter.checkAlignedDeleteCalledEq(ExpectAligned));
+    assert(globalMemCounter.checkLastDeleteAlignEq(ExpectAligned ? Align : 0));
+    assert(T::constructed == 0);
+  }
+}
+
+template <size_t Align>
+constexpr bool test_aligned_constexpr() {
+    typedef AlignedType<Align> T;
+    std::allocator<T> a;
+    std::same_as<std::allocation_result<T*>> decltype(auto) ap = a.allocate_at_least(3);
+    assert(ap.count >= 3);
+    a.deallocate(ap.ptr, 3);
+
+    return true;
+}
+
+int main(int, char**) {
+    test_aligned<1>();
+    test_aligned<2>();
+    test_aligned<4>();
+    test_aligned<8>();
+    test_aligned<16>();
+    test_aligned<MaxAligned>();
+    test_aligned<OverAligned>();
+    test_aligned<OverAligned * 2>();
+
+    static_assert(test_aligned_constexpr<1>());
+    static_assert(test_aligned_constexpr<2>());
+    static_assert(test_aligned_constexpr<4>());
+    static_assert(test_aligned_constexpr<8>());
+    static_assert(test_aligned_constexpr<16>());
+    static_assert(test_aligned_constexpr<MaxAligned>());
+    static_assert(test_aligned_constexpr<OverAligned>());
+    static_assert(test_aligned_constexpr<OverAligned * 2>());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp
new file mode 100644
index 0000000..cb3ec88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_pointers.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// <memory>
+//
+// template <class Alloc>
+// struct allocator_traits
+// {
+//     typedef Alloc                        allocator_type;
+//     typedef typename allocator_type::value_type
+//                                          value_type;
+//
+//     typedef Alloc::pointer | value_type* pointer;
+//     typedef Alloc::const_pointer
+//           | pointer_traits<pointer>::rebind<const value_type>
+//                                          const_pointer;
+//     typedef Alloc::void_pointer
+//           | pointer_traits<pointer>::rebind<void>
+//                                          void_pointer;
+//     typedef Alloc::const_void_pointer
+//           | pointer_traits<pointer>::rebind<const void>
+//                                          const_void_pointer;
+
+template <typename Alloc>
+void test_pointer()
+{
+     typename std::allocator_traits<Alloc>::pointer        vp;
+     typename std::allocator_traits<Alloc>::const_pointer cvp;
+
+     ((void)vp); // Prevent unused warning
+     ((void)cvp); // Prevent unused warning
+
+     static_assert(std::is_same<bool, decltype( vp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype( vp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype(cvp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <= cvp)>::value, "");
+}
+
+template <typename Alloc>
+void test_void_pointer()
+{
+     typename std::allocator_traits<Alloc>::void_pointer        vp;
+     typename std::allocator_traits<Alloc>::const_void_pointer cvp;
+
+     ((void)vp); // Prevent unused warning
+     ((void)cvp); // Prevent unused warning
+
+     static_assert(std::is_same<bool, decltype( vp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype( vp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp ==  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp !=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >=  vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <   vp)>::value, "");
+     static_assert(std::is_same<bool, decltype( vp <= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <=  vp)>::value, "");
+
+     static_assert(std::is_same<bool, decltype(cvp == cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp != cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp >= cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <  cvp)>::value, "");
+     static_assert(std::is_same<bool, decltype(cvp <= cvp)>::value, "");
+}
+
+struct Foo { int x; };
+
+int main(int, char**)
+{
+    test_pointer<std::allocator<char>> ();
+    test_pointer<std::allocator<int>> ();
+    test_pointer<std::allocator<Foo>> ();
+
+    test_void_pointer<std::allocator<char>> ();
+    test_void_pointer<std::allocator<int>> ();
+    test_void_pointer<std::allocator<Foo>> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.deprecated_in_cxx17.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.deprecated_in_cxx17.verify.cpp
new file mode 100644
index 0000000..901f047
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.deprecated_in_cxx17.verify.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Check that the following nested types are deprecated in C++17:
+
+// template <class T>
+// class allocator
+// {
+// public:
+//     typedef T*                                           pointer;
+//     typedef const T*                                     const_pointer;
+//     typedef typename add_lvalue_reference<T>::type       reference;
+//     typedef typename add_lvalue_reference<const T>::type const_reference;
+//
+//     template <class U> struct rebind {typedef allocator<U> other;};
+// ...
+// };
+
+// REQUIRES: c++17
+
+#include <memory>
+
+int main(int, char**) {
+    {
+        typedef std::allocator<char>::pointer Pointer;                  // expected-warning {{'pointer' is deprecated}}
+        typedef std::allocator<char>::const_pointer ConstPointer;       // expected-warning {{'const_pointer' is deprecated}}
+        typedef std::allocator<char>::reference Reference;              // expected-warning {{'reference' is deprecated}}
+        typedef std::allocator<char>::const_reference ConstReference;   // expected-warning {{'const_reference' is deprecated}}
+        typedef std::allocator<char>::rebind<int>::other Rebind;        // expected-warning {{'rebind<int>' is deprecated}}
+    }
+    {
+        typedef std::allocator<char const>::pointer Pointer;                  // expected-warning {{'pointer' is deprecated}}
+        typedef std::allocator<char const>::const_pointer ConstPointer;       // expected-warning {{'const_pointer' is deprecated}}
+        typedef std::allocator<char const>::reference Reference;              // expected-warning {{'reference' is deprecated}}
+        typedef std::allocator<char const>::const_reference ConstReference;   // expected-warning {{'const_reference' is deprecated}}
+        typedef std::allocator<char const>::rebind<int>::other Rebind;        // expected-warning {{'rebind<int>' is deprecated}}
+    }
+    {
+        typedef std::allocator<void>::pointer Pointer;                  // expected-warning {{'pointer' is deprecated}}
+        typedef std::allocator<void>::const_pointer ConstPointer;       // expected-warning {{'const_pointer' is deprecated}}
+        // reference and const_reference are not provided by std::allocator<void>
+        typedef std::allocator<void>::rebind<int>::other Rebind;        // expected-warning {{'rebind<int>' is deprecated}}
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.pass.cpp
new file mode 100644
index 0000000..74adc69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Check that the nested types of std::allocator are provided:
+
+// template <class T>
+// class allocator
+// {
+// public:
+//     typedef size_t    size_type;
+//     typedef ptrdiff_t difference_type;
+//     typedef T         value_type;
+//
+//     typedef T*        pointer;           // deprecated in C++17, removed in C++20
+//     typedef T const*  const_pointer;     // deprecated in C++17, removed in C++20
+//     typedef T&        reference;         // deprecated in C++17, removed in C++20
+//     typedef T const&  const_reference;   // deprecated in C++17, removed in C++20
+//     template< class U > struct rebind { typedef allocator<U> other; }; // deprecated in C++17, removed in C++20
+//
+//     typedef true_type propagate_on_container_move_assignment;
+//     typedef true_type is_always_equal;
+// ...
+// };
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct U;
+
+template <typename T>
+void test() {
+    typedef std::allocator<T> Alloc;
+    static_assert((std::is_same<typename Alloc::size_type, std::size_t>::value), "");
+    static_assert((std::is_same<typename Alloc::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<typename Alloc::value_type, T>::value), "");
+    static_assert((std::is_same<typename Alloc::propagate_on_container_move_assignment, std::true_type>::value), "");
+    static_assert((std::is_same<typename Alloc::is_always_equal, std::true_type>::value), "");
+
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename Alloc::pointer, T*>::value), "");
+    static_assert((std::is_same<typename Alloc::const_pointer, T const*>::value), "");
+    static_assert((std::is_same<typename Alloc::reference, T&>::value), "");
+    static_assert((std::is_same<typename Alloc::const_reference, T const&>::value), "");
+    static_assert((std::is_same<typename Alloc::template rebind<U>::other, std::allocator<U> >::value), "");
+#endif
+}
+
+int main(int, char**) {
+    test<char>();
+#ifdef _LIBCPP_VERSION
+    test<char const>(); // extension
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.removed_in_cxx20.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.removed_in_cxx20.verify.cpp
new file mode 100644
index 0000000..1d91a02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.removed_in_cxx20.verify.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// Check that the following nested types are removed in C++20:
+
+// template <class T>
+// class allocator
+// {
+// public:
+//     typedef T*                                           pointer;
+//     typedef const T*                                     const_pointer;
+//     typedef typename add_lvalue_reference<T>::type       reference;
+//     typedef typename add_lvalue_reference<const T>::type const_reference;
+//
+//     template <class U> struct rebind {typedef allocator<U> other;};
+// ...
+// };
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <memory>
+#include "test_macros.h"
+
+template <typename T>
+void check()
+{
+    typedef typename std::allocator<T>::pointer AP;                      // expected-error 3 {{no type named 'pointer'}}
+    typedef typename std::allocator<T>::const_pointer ACP;               // expected-error 3 {{no type named 'const_pointer'}}
+    typedef typename std::allocator<T>::reference AR;                    // expected-error 3 {{no type named 'reference'}}
+    typedef typename std::allocator<T>::const_reference ACR;             // expected-error 3 {{no type named 'const_reference'}}
+    typedef typename std::allocator<T>::template rebind<int>::other ARO; // expected-error 3 {{no member named 'rebind'}}
+}
+
+int main(int, char**)
+{
+    check<char>();
+    check<char const>();
+    check<void>();
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.void.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.void.compile.pass.cpp
new file mode 100644
index 0000000..d7b4a1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/default.allocator/allocator_types.void.compile.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that the nested types of std::allocator<void> are provided.
+// After C++17, those are not provided in the primary template and the
+// explicit specialization doesn't exist anymore, so this test is moot.
+
+// REQUIRES: c++03 || c++11 || c++14 || c++17
+
+// template <>
+// class allocator<void>
+// {
+// public:
+//     typedef void*                                 pointer;
+//     typedef const void*                           const_pointer;
+//     typedef void                                  value_type;
+//
+//     template <class _Up> struct rebind {typedef allocator<_Up> other;};
+// };
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+
+static_assert((std::is_same<std::allocator<void>::pointer, void*>::value), "");
+static_assert((std::is_same<std::allocator<void>::const_pointer, const void*>::value), "");
+static_assert((std::is_same<std::allocator<void>::value_type, void>::value), "");
+static_assert((std::is_same<std::allocator<void>::rebind<int>::other,
+                            std::allocator<int> >::value), "");
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp
new file mode 100644
index 0000000..fea34ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T> constexpr T* to_address(T* p) noexcept;
+// template <class Ptr> constexpr auto to_address(const Ptr& p) noexcept;
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Irrelevant;
+
+struct P1 {
+    using element_type = Irrelevant;
+    constexpr explicit P1(int *p) : p_(p) { }
+    constexpr int *operator->() const { return p_; }
+    int *p_;
+};
+
+struct P2 {
+    using element_type = Irrelevant;
+    constexpr explicit P2(int *p) : p_(p) { }
+    constexpr P1 operator->() const { return p_; }
+    P1 p_;
+};
+
+struct P3 {
+    constexpr explicit P3(int *p) : p_(p) { }
+    int *p_;
+};
+
+template<>
+struct std::pointer_traits<P3> {
+    static constexpr int *to_address(const P3& p) { return p.p_; }
+};
+
+struct P4 {
+    constexpr explicit P4(int *p) : p_(p) { }
+    int *operator->() const;  // should never be called
+    int *p_;
+};
+
+template<>
+struct std::pointer_traits<P4> {
+    static constexpr int *to_address(const P4& p) { return p.p_; }
+};
+
+struct P5 {
+    using element_type = Irrelevant;
+    int const* const& operator->() const;
+};
+
+struct P6 {};
+
+template<>
+struct std::pointer_traits<P6> {
+    static int const* const& to_address(const P6&);
+};
+
+// Taken from a build breakage caused in Clang
+namespace P7 {
+    template<typename T> struct CanProxy;
+    template<typename T>
+    struct CanQual {
+        CanProxy<T> operator->() const { return CanProxy<T>(); }
+    };
+    template<typename T>
+    struct CanProxy {
+        const CanProxy<T> *operator->() const { return nullptr; }
+    };
+} // namespace P7
+
+namespace P8 {
+    template<class T>
+    struct FancyPtrA {
+        using element_type = Irrelevant;
+        T *p_;
+        TEST_CONSTEXPR FancyPtrA(T *p) : p_(p) {}
+        T& operator*() const;
+        TEST_CONSTEXPR T *operator->() const { return p_; }
+    };
+    template<class T>
+    struct FancyPtrB {
+        T *p_;
+        TEST_CONSTEXPR FancyPtrB(T *p) : p_(p) {}
+        T& operator*() const;
+    };
+} // namespace P8
+
+template<class T>
+struct std::pointer_traits<P8::FancyPtrB<T> > {
+    static TEST_CONSTEXPR T *to_address(const P8::FancyPtrB<T>& p) { return p.p_; }
+};
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+
+constexpr bool test() {
+    int i = 0;
+    ASSERT_NOEXCEPT(std::to_address(&i));
+    assert(std::to_address(&i) == &i);
+    P1 p1(&i);
+    ASSERT_NOEXCEPT(std::to_address(p1));
+    assert(std::to_address(p1) == &i);
+    P2 p2(&i);
+    ASSERT_NOEXCEPT(std::to_address(p2));
+    assert(std::to_address(p2) == &i);
+    P3 p3(&i);
+    ASSERT_NOEXCEPT(std::to_address(p3));
+    assert(std::to_address(p3) == &i);
+    P4 p4(&i);
+    ASSERT_NOEXCEPT(std::to_address(p4));
+    assert(std::to_address(p4) == &i);
+
+    ASSERT_SAME_TYPE(decltype(std::to_address(std::declval<int const*>())), int const*);
+    ASSERT_SAME_TYPE(decltype(std::to_address(std::declval<P5>())), int const*);
+    ASSERT_SAME_TYPE(decltype(std::to_address(std::declval<P6>())), int const*);
+
+    P7::CanQual<int>* p7 = nullptr;
+    assert(std::to_address(p7) == nullptr);
+    ASSERT_SAME_TYPE(decltype(std::to_address(p7)), P7::CanQual<int>*);
+
+    Holder<Incomplete> *p8_nil = nullptr;  // for C++03 compatibility
+    P8::FancyPtrA<Holder<Incomplete> > p8a = p8_nil;
+    assert(std::to_address(p8a) == p8_nil);
+    ASSERT_SAME_TYPE(decltype(std::to_address(p8a)), decltype(p8_nil));
+
+    P8::FancyPtrB<Holder<Incomplete> > p8b = p8_nil;
+    assert(std::to_address(p8b) == p8_nil);
+    ASSERT_SAME_TYPE(decltype(std::to_address(p8b)), decltype(p8_nil));
+
+    int p9[2] = {};
+    assert(std::to_address(p9) == p9);
+    ASSERT_SAME_TYPE(decltype(std::to_address(p9)), int*);
+
+    const int p10[2] = {};
+    assert(std::to_address(p10) == p10);
+    ASSERT_SAME_TYPE(decltype(std::to_address(p10)), const int*);
+
+    int (*p11)() = nullptr;
+    assert(std::to_address(&p11) == &p11);
+    ASSERT_SAME_TYPE(decltype(std::to_address(&p11)), int(**)());
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+    static_assert(test());
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_on_funcptr.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_on_funcptr.verify.cpp
new file mode 100644
index 0000000..4f4e05c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_on_funcptr.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T> constexpr T* to_address(T* p) noexcept;
+//     Mandates: T is not a function type.
+
+#include <memory>
+
+int (*pf)();
+
+void test() {
+    (void)std::to_address(pf); // expected-error@*:* {{is a function type}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_on_function.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_on_function.verify.cpp
new file mode 100644
index 0000000..ee23060
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_on_function.verify.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T> constexpr T* to_address(T* p) noexcept;
+//     Mandates: T is not a function type.
+
+#include <memory>
+
+int f();
+
+void test() {
+    (void)std::to_address(f); // expected-error@*:* {{is a function type}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_std_iterators.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_std_iterators.pass.cpp
new file mode 100644
index 0000000..e0ec3b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.conversion/to_address_std_iterators.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template <class T> constexpr T* to_address(T* p) noexcept;
+// template <class Ptr> constexpr auto to_address(const Ptr& p) noexcept;
+
+#include <memory>
+
+#include <array>
+#include <cassert>
+#include <span>
+#include <string>
+#include <string_view>
+#include <valarray>
+#include <vector>
+#include "test_macros.h"
+
+template<class C>
+void test_container_iterators(C c)
+{
+    const C& cc = c;
+    assert(std::to_address(c.begin()) == c.data());
+    assert(std::to_address(c.end()) == c.data() + c.size());
+    assert(std::to_address(cc.begin()) == cc.data());
+    assert(std::to_address(cc.end()) == cc.data() + cc.size());
+}
+
+void test_valarray_iterators()
+{
+    std::valarray<int> v(100);
+    int *p = std::to_address(std::begin(v));
+    int *q = std::to_address(std::end(v));
+    assert(q - p == 100);
+}
+
+int main(int, char**) {
+    test_container_iterators(std::array<int, 3>());
+    test_container_iterators(std::vector<int>(3));
+    test_container_iterators(std::string("abc"));
+    test_container_iterators(std::string_view("abc"));
+    test_container_iterators(std::span<const char>("abc"));
+    test_valarray_iterators();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/difference_type.pass.cpp
new file mode 100644
index 0000000..7546df9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/difference_type.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T>
+// struct pointer_traits<T*>
+// {
+//     typedef ptrdiff_t difference_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::pointer_traits<double*>::difference_type, std::ptrdiff_t>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/element_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/element_type.pass.cpp
new file mode 100644
index 0000000..e4f11c2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/element_type.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T>
+// struct pointer_traits<T*>
+// {
+//     typedef T element_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::pointer_traits<const short*>::element_type, const short>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.pass.cpp
new file mode 100644
index 0000000..14054b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Ptr>
+// struct pointer_traits
+// {
+//     typedef Ptr pointer;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A
+{
+    typedef short element_type;
+    typedef char difference_type;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::pointer_traits<A>::pointer, A>::value), "");
+    static_assert((std::is_same<std::pointer_traits<int*>::pointer, int*>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp
new file mode 100644
index 0000000..62ea10c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.functions/pointer_to.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Ptr>
+// struct pointer_traits
+// {
+//     static pointer pointer_to(<details>);
+//     ...
+// };
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+private:
+    struct nat {};
+public:
+    typedef T element_type;
+    element_type* t_;
+
+    A(element_type* t) : t_(t) {}
+
+    static A pointer_to(typename std::conditional<std::is_void<element_type>::value,
+                                           nat, element_type>::type& et)
+        {return A(&et);}
+};
+
+int main(int, char**)
+{
+    {
+        int i = 0;
+        static_assert((std::is_same<A<int>, decltype(std::pointer_traits<A<int> >::pointer_to(i))>::value), "");
+        A<int> a = std::pointer_traits<A<int> >::pointer_to(i);
+        assert(a.t_ == &i);
+    }
+    {
+        (std::pointer_traits<A<void> >::element_type)0;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/difference_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/difference_type.pass.cpp
new file mode 100644
index 0000000..d4d763c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/difference_type.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Ptr>
+// struct pointer_traits
+// {
+//     typedef <details> difference_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A
+{
+    typedef short element_type;
+    typedef char difference_type;
+};
+
+struct B
+{
+    typedef short element_type;
+};
+
+template <class T>
+struct C {};
+
+template <class T>
+struct D
+{
+    typedef char difference_type;
+};
+
+template <class T>
+struct E
+{
+    static int difference_type;
+};
+
+template <class T>
+struct F {
+private:
+  typedef int difference_type;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::pointer_traits<A>::difference_type, char>::value), "");
+    static_assert((std::is_same<std::pointer_traits<B>::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<std::pointer_traits<C<double> >::difference_type, std::ptrdiff_t>::value), "");
+    static_assert((std::is_same<std::pointer_traits<D<int> >::difference_type, char>::value), "");
+    static_assert((std::is_same<std::pointer_traits<E<int> >::difference_type, std::ptrdiff_t>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::pointer_traits<F<int>>::difference_type, std::ptrdiff_t>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/element_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/element_type.pass.cpp
new file mode 100644
index 0000000..c0efdea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/element_type.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Ptr>
+// struct pointer_traits
+// {
+//     typedef <details> element_type;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A
+{
+    typedef char element_type;
+};
+
+template <class T>
+struct B
+{
+    typedef char element_type;
+};
+
+template <class T>
+struct C
+{
+};
+
+template <class T, class U>
+struct D
+{
+};
+
+template <class T, class U>
+struct E
+{
+    static int element_type;
+};
+
+template <class T>
+struct F {
+private:
+  typedef int element_type;
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::pointer_traits<A>::element_type, char>::value), "");
+    static_assert((std::is_same<std::pointer_traits<B<int> >::element_type, char>::value), "");
+    static_assert((std::is_same<std::pointer_traits<C<int> >::element_type, int>::value), "");
+    static_assert((std::is_same<std::pointer_traits<D<double, int> >::element_type, double>::value), "");
+    static_assert((std::is_same<std::pointer_traits<E<double, int> >::element_type, double>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::pointer_traits<F<double>>::element_type, double>::value), "");
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/rebind.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/rebind.pass.cpp
new file mode 100644
index 0000000..a79f339
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer.traits.types/rebind.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class Ptr>
+// struct pointer_traits
+// {
+//     template <class U> using rebind = <details>;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+struct A
+{
+};
+
+template <class T> struct B1 {};
+
+template <class T>
+struct B
+{
+#if TEST_STD_VER >= 11
+    template <class U> using rebind = B1<U>;
+#else
+    template <class U> struct rebind {typedef B1<U> other;};
+#endif
+};
+
+template <class T, class U>
+struct C
+{
+};
+
+template <class T, class U> struct D1 {};
+
+template <class T, class U>
+struct D
+{
+#if TEST_STD_VER >= 11
+    template <class V> using rebind = D1<V, U>;
+#else
+    template <class V> struct rebind {typedef D1<V, U> other;};
+#endif
+};
+
+template <class T, class U>
+struct E
+{
+    template <class>
+    void rebind() {}
+};
+
+
+#if TEST_STD_VER >= 11
+template <class T, class U>
+struct F {
+private:
+  template <class>
+  using rebind = void;
+};
+#endif
+
+#if TEST_STD_VER >= 14
+template <class T, class U>
+struct G
+{
+    template <class>
+    static constexpr int rebind = 42;
+};
+#endif
+
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::pointer_traits<A<int*> >::rebind<double*>, A<double*> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<B<int> >::rebind<double>, B1<double> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<C<char, int> >::rebind<double>, C<double, int> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<D<char, int> >::rebind<double>, D1<double, int> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<E<char, int> >::rebind<double>, E<double, int> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<F<char, int> >::rebind<double>, F<double, int> >::value), "");
+
+#if TEST_STD_VER >= 14
+    static_assert((std::is_same<std::pointer_traits<G<char, int> >::rebind<double>, G<double, int> >::value), "");
+#endif
+#else  // TEST_STD_VER < 11
+    static_assert((std::is_same<std::pointer_traits<A<int*> >::rebind<double*>::other, A<double*> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<B<int> >::rebind<double>::other, B1<double> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<C<char, int> >::rebind<double>::other, C<double, int> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<D<char, int> >::rebind<double>::other, D1<double, int> >::value), "");
+    static_assert((std::is_same<std::pointer_traits<E<char, int> >::rebind<double>::other, E<double, int> >::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp
new file mode 100644
index 0000000..c4b5ca1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/pointer_to.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T>
+// struct pointer_traits<T*>
+// {
+//     static pointer pointer_to(<details>); // constexpr in C++20
+//     ...
+// };
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        int i = 0;
+        static_assert(std::is_same<decltype(std::pointer_traits<int*>::pointer_to(i)), int*>::value, "");
+        assert(std::pointer_traits<int*>::pointer_to(i) == &i);
+    }
+    {
+        int i = 0;
+        static_assert(std::is_same<decltype(std::pointer_traits<const int*>::pointer_to(i)), const int*>::value, "");
+        assert(std::pointer_traits<const int*>::pointer_to(i) == &i);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    {
+        // Check that pointer_traits<void*> is still well-formed, even though it has no pointer_to.
+        static_assert(std::is_same<std::pointer_traits<void*>::element_type, void>::value, "");
+        static_assert(std::is_same<std::pointer_traits<const void*>::element_type, const void>::value, "");
+        static_assert(std::is_same<std::pointer_traits<volatile void*>::element_type, volatile void>::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/rebind.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/rebind.pass.cpp
new file mode 100644
index 0000000..f64213c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/pointer.traits/rebind.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T>
+// struct pointer_traits<T*>
+// {
+//     template <class U> using rebind = U*;
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    static_assert((std::is_same<std::pointer_traits<int*>::rebind<double>, double*>::value), "");
+#else
+    static_assert((std::is_same<std::pointer_traits<int*>::rebind<double>::other, double*>::value), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/align.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/align.pass.cpp
new file mode 100644
index 0000000..1fc29f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/align.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// #include <memory>
+
+// void* align(size_t alignment, size_t size, void*& ptr, size_t& space);
+
+#include <cassert>
+#include <cstddef>
+#include <memory>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const unsigned N = 20;
+    char buf[N];
+    void* r;
+    void* p = &buf[0];
+    std::size_t s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[0]);
+    assert(r == p);
+    assert(s == N);
+
+    p = &buf[1];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-3);
+
+    p = &buf[2];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-2);
+
+    p = &buf[3];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-1);
+
+    p = &buf[4];
+    s = N;
+    r = std::align(4, 10, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N);
+
+    p = &buf[0];
+    s = N;
+    r = std::align(4, N, p, s);
+    assert(p == &buf[0]);
+    assert(r == p);
+    assert(s == N);
+
+    p = &buf[1];
+    s = N-1;
+    r = std::align(4, N-4, p, s);
+    assert(p == &buf[4]);
+    assert(r == p);
+    assert(s == N-4);
+
+    p = &buf[1];
+    s = N-1;
+    r = std::align(4, N-3, p, s);
+    assert(p == &buf[1]);
+    assert(r == nullptr);
+    assert(s == N-1);
+
+    p = &buf[0];
+    s = N;
+    r = std::align(1, N+1, p, s);
+    assert(p == &buf[0]);
+    assert(r == nullptr);
+    assert(s == N);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/assume_aligned.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/assume_aligned.nodiscard.verify.cpp
new file mode 100644
index 0000000..c967502
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/assume_aligned.nodiscard.verify.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// #include <memory>
+
+// template<size_t N, class T>
+// [[nodiscard]] constexpr T* assume_aligned(T* ptr);
+
+#include <memory>
+
+void f() {
+  int *p = nullptr;
+  std::assume_aligned<4>(p); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/assume_aligned.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/assume_aligned.pass.cpp
new file mode 100644
index 0000000..72e23a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/ptr.align/assume_aligned.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// #include <memory>
+
+// template<size_t N, class T>
+// [[nodiscard]] constexpr T* assume_aligned(T* ptr);
+
+#include <memory>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <typename T>
+constexpr void check(T* p) {
+  ASSERT_SAME_TYPE(T*, decltype(std::assume_aligned<1>(p)));
+  constexpr std::size_t alignment = alignof(T);
+
+  if constexpr (alignment >= 1)
+    assert(p == std::assume_aligned<1>(p));
+  if constexpr (alignment >= 2)
+    assert(p == std::assume_aligned<2>(p));
+  if constexpr (alignment >= 4)
+    assert(p == std::assume_aligned<4>(p));
+  if constexpr (alignment >= 8)
+    assert(p == std::assume_aligned<8>(p));
+  if constexpr (alignment >= 16)
+    assert(p == std::assume_aligned<16>(p));
+  if constexpr (alignment >= 32)
+    assert(p == std::assume_aligned<32>(p));
+  if constexpr (alignment >= 64)
+    assert(p == std::assume_aligned<64>(p));
+  if constexpr (alignment >= 128)
+    assert(p == std::assume_aligned<128>(p));
+}
+
+struct              S    { };
+struct alignas(  4) S4   { };
+struct alignas(  8) S8   { };
+struct alignas( 16) S16  { };
+struct alignas( 32) S32  { };
+struct alignas( 64) S64  { };
+struct alignas(128) S128 { };
+
+constexpr bool tests() {
+  char        c;
+  int         i;
+  long        l;
+  double      d;
+  long double ld;
+  check( &c);
+  check( &i);
+  check( &l);
+  check( &d);
+  check(&ld);
+
+  S    s;
+  S4   s4;
+  S8   s8;
+  S16  s16;
+  S32  s32;
+  S64  s64;
+  S128 s128;
+  check(&s);
+  check(&s4);
+  check(&s8);
+  check(&s16);
+  check(&s32);
+  check(&s64);
+  check(&s128);
+
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  static_assert(tests());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/buffer.h b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/buffer.h
new file mode 100644
index 0000000..1114fdc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/buffer.h
@@ -0,0 +1,25 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_BUFFER_H
+#define LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_BUFFER_H
+
+template <typename T, int N>
+struct Buffer {
+  alignas(T) char buffer[sizeof(T) * N] = {};
+
+  T* begin() { return reinterpret_cast<T*>(buffer); }
+  T* end() { return begin() + N; }
+  const T* cbegin() const { return reinterpret_cast<const T*>(buffer); }
+  const T* cend() const { return cbegin() + N; }
+
+  constexpr int size() const { return N; }
+};
+
+#endif // LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_BUFFER_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/counted.h b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/counted.h
new file mode 100644
index 0000000..1d4cc52
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/counted.h
@@ -0,0 +1,85 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_COUNTED_H
+#define LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_COUNTED_H
+
+#include "test_macros.h"
+
+struct Counted {
+  static int current_objects;
+  static int total_objects;
+  static int total_copies;
+  static int total_moves;
+  static int throw_on;
+
+  int value;
+  bool moved_from = false;
+
+  explicit Counted() {
+    check_throw();
+    increase_counters();
+  }
+
+  explicit Counted(int v) : value(v) {
+    check_throw();
+    increase_counters();
+  }
+
+  ~Counted() { --current_objects; }
+
+  static void reset() {
+    current_objects = total_objects = 0;
+    total_copies = total_moves = 0;
+    throw_on = -1;
+  }
+
+  Counted(const Counted& rhs) : value(rhs.value) {
+    check_throw();
+    increase_counters();
+    ++total_copies;
+  }
+
+  Counted(Counted&& rhs) : value(rhs.value) {
+    check_throw();
+    increase_counters();
+
+    rhs.moved_from = true;
+    ++total_moves;
+  }
+
+  friend bool operator==(const Counted& l, const Counted& r) {
+    return l.value == r.value;
+  }
+
+  friend bool operator!=(const Counted& l, const Counted& r) {
+    return !(l == r);
+  }
+
+  friend void operator&(Counted) = delete;
+
+private:
+  void check_throw() {
+    if (throw_on == total_objects) {
+      TEST_THROW(1);
+    }
+  }
+
+  void increase_counters() {
+    ++current_objects;
+    ++total_objects;
+  }
+};
+int Counted::current_objects = 0;
+int Counted::total_objects = 0;
+int Counted::total_copies = 0;
+int Counted::total_moves = 0;
+int Counted::throw_on = -1;
+
+#endif // LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_COUNTED_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/addressof.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/addressof.pass.cpp
new file mode 100644
index 0000000..dde8a9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/addressof.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <ObjectType T> T* addressof(T& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    void operator&() const {}
+};
+
+struct nothing {
+    operator char&()
+    {
+        static char c;
+        return c;
+    }
+};
+
+int main(int, char**)
+{
+    {
+    int i;
+    double d;
+    assert(std::addressof(i) == &i);
+    assert(std::addressof(d) == &d);
+    A* tp = new A;
+    const A* ctp = tp;
+    assert(std::addressof(*tp) == tp);
+    assert(std::addressof(*ctp) == tp);
+    delete tp;
+    }
+    {
+    union
+    {
+        nothing n;
+        int i;
+    };
+    assert(std::addressof(n) == (void*)std::addressof(i));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/addressof.temp.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/addressof.temp.compile.fail.cpp
new file mode 100644
index 0000000..f703301
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/addressof.temp.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <ObjectType T> T* addressof(T&& r) = delete;
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER > 14
+    const int *p = std::addressof<const int>(0);
+#else
+#error
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/constexpr_addressof.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/constexpr_addressof.pass.cpp
new file mode 100644
index 0000000..b7283e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.addressof/constexpr_addressof.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <ObjectType T> constexpr T* addressof(T& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Pointer {
+  constexpr Pointer(void* v) : value(v) {}
+  void* value;
+};
+
+struct A
+{
+    constexpr A() : n(42) {}
+    void operator&() const { }
+    int n;
+};
+
+constexpr int i = 0;
+constexpr double d = 0.0;
+constexpr A a{};
+
+int main(int, char**)
+{
+    static_assert(std::addressof(i) == &i, "");
+    static_assert(std::addressof(d) == &d, "");
+    constexpr const A* ap = std::addressof(a);
+    static_assert(&ap->n == &a.n, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.construct/construct_at.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.construct/construct_at.pass.cpp
new file mode 100644
index 0000000..47d4bba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.construct/construct_at.pass.cpp
@@ -0,0 +1,124 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <class T, class ...Args>
+// constexpr T* construct_at(T* location, Args&& ...args);
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_iterators.h"
+
+struct Foo {
+    constexpr Foo() { }
+    constexpr Foo(int a, char b, double c) : a_(a), b_(b), c_(c) { }
+    constexpr Foo(int a, char b, double c, int* count) : Foo(a, b, c) { *count += 1; }
+    constexpr bool operator==(Foo const& other) const {
+        return a_ == other.a_ && b_ == other.b_ && c_ == other.c_;
+    }
+
+private:
+    int a_;
+    char b_;
+    double c_;
+};
+
+struct Counted {
+    int& count_;
+    constexpr Counted(int& count) : count_(count) { ++count; }
+    constexpr Counted(Counted const& that) : count_(that.count_) { ++count_; }
+    constexpr ~Counted() { --count_; }
+};
+
+constexpr bool test()
+{
+    {
+        int i = 99;
+        int* res = std::construct_at(&i);
+        assert(res == &i);
+        assert(*res == 0);
+    }
+
+    {
+        int i = 0;
+        int* res = std::construct_at(&i, 42);
+        assert(res == &i);
+        assert(*res == 42);
+    }
+
+    {
+        Foo foo = {};
+        int count = 0;
+        Foo* res = std::construct_at(&foo, 42, 'x', 123.89, &count);
+        assert(res == &foo);
+        assert(*res == Foo(42, 'x', 123.89));
+        assert(count == 1);
+    }
+
+    {
+        std::allocator<Counted> a;
+        Counted* p = a.allocate(2);
+        int count = 0;
+        std::construct_at(p, count);
+        assert(count == 1);
+        std::construct_at(p+1, count);
+        assert(count == 2);
+        (p+1)->~Counted();
+        assert(count == 1);
+        p->~Counted();
+        assert(count == 0);
+        a.deallocate(p, 2);
+    }
+
+    {
+        std::allocator<Counted const> a;
+        Counted const* p = a.allocate(2);
+        int count = 0;
+        std::construct_at(p, count);
+        assert(count == 1);
+        std::construct_at(p+1, count);
+        assert(count == 2);
+        (p+1)->~Counted();
+        assert(count == 1);
+        p->~Counted();
+        assert(count == 0);
+        a.deallocate(p, 2);
+    }
+
+    return true;
+}
+
+template <class ...Args, class = decltype(std::construct_at(std::declval<Args>()...))>
+constexpr bool can_construct_at(Args&&...) { return true; }
+
+template <class ...Args>
+constexpr bool can_construct_at(...) { return false; }
+
+// Check that SFINAE works.
+static_assert( can_construct_at((int*)nullptr, 42));
+static_assert( can_construct_at((Foo*)nullptr, 1, '2', 3.0));
+static_assert(!can_construct_at((Foo*)nullptr, 1, '2'));
+static_assert(!can_construct_at((Foo*)nullptr, 1, '2', 3.0, 4));
+static_assert(!can_construct_at(nullptr, 1, '2', 3.0));
+static_assert(!can_construct_at((int*)nullptr, 1, '2', 3.0));
+static_assert(!can_construct_at(contiguous_iterator<Foo*>(), 1, '2', 3.0));
+// Can't construct function pointers.
+static_assert(!can_construct_at((int(*)())nullptr));
+static_assert(!can_construct_at((int(*)())nullptr, nullptr));
+
+int main(int, char**)
+{
+    test();
+    static_assert(test());
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.construct/ranges_construct_at.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.construct/ranges_construct_at.pass.cpp
new file mode 100644
index 0000000..396fed7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.construct/ranges_construct_at.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// namespace ranges {
+//   template<class T, class... Args>
+//     constexpr T* construct_at(T* location, Args&&... args); // since C++20
+// }
+
+#include <cassert>
+#include <initializer_list>
+#include <memory>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::construct_at)>);
+
+struct Foo {
+  int x = 0;
+  int y = 0;
+
+  constexpr Foo() = default;
+  constexpr explicit Foo(int set_x, int set_y) : x(set_x), y(set_y) {}
+  constexpr Foo(std::initializer_list<int>);
+
+  void operator&() const = delete;
+  void operator,(auto&&) const = delete;
+};
+
+ASSERT_SAME_TYPE(decltype(std::ranges::construct_at((int*)nullptr)), int*);
+ASSERT_SAME_TYPE(decltype(std::ranges::construct_at((Foo*)nullptr)), Foo*);
+
+struct Counted {
+  int& count;
+
+  constexpr Counted(int& count_ref) : count(count_ref) { ++count; }
+  constexpr Counted(const Counted& rhs) : count(rhs.count) { ++count; }
+  constexpr ~Counted() { --count; }
+};
+
+constexpr bool test() {
+  // Value initialization.
+  {
+    int x = 1;
+
+    int* result = std::ranges::construct_at(&x);
+    assert(result == &x);
+    assert(x == 0);
+  }
+
+  // Copy initialization.
+  {
+    int x = 1;
+
+    int* result = std::ranges::construct_at(&x, 42);
+    assert(result == &x);
+    assert(x == 42);
+  }
+
+  // Explicit multiargument constructor; also checks that the initializer list constructor is not invoked.
+  {
+    Foo f;
+
+    Foo* result = std::ranges::construct_at(std::addressof(f), 42, 123);
+    assert(result == std::addressof(f));
+    assert(f.x == 42);
+    assert(f.y == 123);
+  }
+
+  // Works with buffers of uninitialized memory.
+  {
+    std::allocator<Counted> alloc;
+    Counted* out = alloc.allocate(2);
+    int count = 0;
+
+    Counted* result = std::ranges::construct_at(out, count);
+    assert(result == out);
+    assert(count == 1);
+
+    result = std::ranges::construct_at(out + 1, count);
+    assert(result == out + 1);
+    assert(count == 2);
+
+    std::destroy(out, out + 1);
+    alloc.deallocate(out, 2);
+  }
+
+  // Works with const pointers.
+  {
+    int x = 1;
+    const int* ptr = &x;
+
+    const int* result = std::ranges::construct_at(ptr, 42);
+    assert(result == ptr);
+    assert(x == 42);
+  }
+
+  return true;
+}
+
+constexpr bool can_construct_at(auto&&... args)
+  requires requires { std::ranges::construct_at(decltype(args)(args)...); }
+  { return true; }
+
+constexpr bool can_construct_at(auto&&...) { return false; }
+
+// Check that SFINAE works.
+static_assert( can_construct_at((Foo*)nullptr, 1, 2));
+static_assert(!can_construct_at((Foo*)nullptr, 1));
+static_assert(!can_construct_at((Foo*)nullptr, 1, 2, 3));
+static_assert(!can_construct_at(nullptr, 1, 2));
+static_assert(!can_construct_at((int*)nullptr, 1, 2));
+static_assert(!can_construct_at(contiguous_iterator<Foo*>(), 1, 2));
+// Can't construct function pointers.
+static_assert(!can_construct_at((int(*)())nullptr));
+static_assert(!can_construct_at((int(*)())nullptr, nullptr));
+// TODO(varconst): check that array types work once D114649 implementing LWG3639 lands.
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy.pass.cpp
new file mode 100644
index 0000000..b655a23
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class ForwardIt>
+// constexpr void destroy(ForwardIt, ForwardIt);
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+    int* counter_;
+    TEST_CONSTEXPR Counted(int* counter) : counter_(counter) { ++*counter_; }
+    TEST_CONSTEXPR Counted(Counted const& other) : counter_(other.counter_) { ++*counter_; }
+    TEST_CONSTEXPR_CXX20 ~Counted() { --*counter_; }
+    friend void operator&(Counted) = delete;
+};
+
+#if TEST_STD_VER > 17
+constexpr bool test_arrays() {
+    {
+        using Array = Counted[3];
+        using Alloc = std::allocator<Array>;
+        int counter = 0;
+        Alloc alloc;
+        Array* pool = std::allocator_traits<Alloc>::allocate(alloc, 5);
+
+        for (Array* p = pool; p != pool + 5; ++p) {
+            Array& arr = *p;
+            for (int i = 0; i != 3; ++i) {
+                std::allocator_traits<Alloc>::construct(alloc, std::addressof(arr[i]), &counter);
+            }
+        }
+        assert(counter == 5 * 3);
+
+        std::destroy(pool, pool + 5);
+        ASSERT_SAME_TYPE(decltype(std::destroy(pool, pool + 5)), void);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 5);
+    }
+    {
+        using Array = Counted[3][2];
+        using Alloc = std::allocator<Array>;
+        int counter = 0;
+        Alloc alloc;
+        Array* pool = std::allocator_traits<Alloc>::allocate(alloc, 5);
+
+        for (Array* p = pool; p != pool + 5; ++p) {
+            Array& arr = *p;
+            for (int i = 0; i != 3; ++i) {
+                for (int j = 0; j != 2; ++j) {
+                    std::allocator_traits<Alloc>::construct(alloc, std::addressof(arr[i][j]), &counter);
+                }
+            }
+        }
+        assert(counter == 5 * 3 * 2);
+
+        std::destroy(pool, pool + 5);
+        ASSERT_SAME_TYPE(decltype(std::destroy(pool, pool + 5)), void);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 5);
+    }
+
+    return true;
+}
+#endif
+
+template <class It>
+TEST_CONSTEXPR_CXX20 void test() {
+    using Alloc = std::allocator<Counted>;
+    int counter = 0;
+    Alloc alloc;
+    Counted* pool = std::allocator_traits<Alloc>::allocate(alloc, 5);
+
+    for (Counted* p = pool; p != pool + 5; ++p)
+        std::allocator_traits<Alloc>::construct(alloc, p, &counter);
+    assert(counter == 5);
+
+    std::destroy(It(pool), It(pool + 5));
+    ASSERT_SAME_TYPE(decltype(std::destroy(It(pool), It(pool + 5))), void);
+    assert(counter == 0);
+
+    std::allocator_traits<Alloc>::deallocate(alloc, pool, 5);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    test<Counted*>();
+    test<forward_iterator<Counted*>>();
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 17
+    test_arrays();
+    static_assert(tests());
+    // TODO: Until std::construct_at has support for arrays, it's impossible to test this
+    //       in a constexpr context (see https://reviews.llvm.org/D114903).
+    // static_assert(test_arrays());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy_at.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy_at.pass.cpp
new file mode 100644
index 0000000..894b055
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy_at.pass.cpp
@@ -0,0 +1,141 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class T>
+// constexpr void destroy_at(T*);
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct Counted {
+    int* counter_;
+    TEST_CONSTEXPR Counted(int* counter) : counter_(counter) { ++*counter_; }
+    TEST_CONSTEXPR_CXX20 ~Counted() { --*counter_; }
+    friend void operator&(Counted) = delete;
+};
+
+struct VirtualCounted {
+    int* counter_;
+    TEST_CONSTEXPR VirtualCounted(int* counter) : counter_(counter) { ++*counter_; }
+    TEST_CONSTEXPR_CXX20 virtual ~VirtualCounted() { --*counter_; }
+    void operator&() const = delete;
+};
+
+struct DerivedCounted : VirtualCounted {
+    TEST_CONSTEXPR DerivedCounted(int* counter) : VirtualCounted(counter) { }
+    TEST_CONSTEXPR_CXX20 ~DerivedCounted() override { }
+};
+
+#if TEST_STD_VER > 17
+constexpr bool test_arrays() {
+    {
+        using Array = Counted[3];
+        using Alloc = std::allocator<Array>;
+        Alloc alloc;
+        Array* ptr = std::allocator_traits<Alloc>::allocate(alloc, 1);
+        Array& arr = *ptr;
+
+        int counter = 0;
+        for (int i = 0; i != 3; ++i)
+            std::allocator_traits<Alloc>::construct(alloc, std::addressof(arr[i]), &counter);
+        assert(counter == 3);
+
+        std::destroy_at(ptr);
+        ASSERT_SAME_TYPE(decltype(std::destroy_at(ptr)), void);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, ptr, 1);
+    }
+    {
+        using Array = Counted[3][2];
+        using Alloc = std::allocator<Array>;
+        Alloc alloc;
+        Array* ptr = std::allocator_traits<Alloc>::allocate(alloc, 1);
+        Array& arr = *ptr;
+
+        int counter = 0;
+        for (int i = 0; i != 3; ++i)
+            for (int j = 0; j != 2; ++j)
+                std::allocator_traits<Alloc>::construct(alloc, std::addressof(arr[i][j]), &counter);
+        assert(counter == 3 * 2);
+
+        std::destroy_at(ptr);
+        ASSERT_SAME_TYPE(decltype(std::destroy_at(ptr)), void);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, ptr, 1);
+    }
+    return true;
+}
+#endif
+
+TEST_CONSTEXPR_CXX20 bool test() {
+    {
+        using Alloc = std::allocator<Counted>;
+        Alloc alloc;
+        Counted* ptr1 = std::allocator_traits<Alloc>::allocate(alloc, 1);
+        Counted* ptr2 = std::allocator_traits<Alloc>::allocate(alloc, 1);
+
+        int counter = 0;
+        std::allocator_traits<Alloc>::construct(alloc, ptr1, &counter);
+        std::allocator_traits<Alloc>::construct(alloc, ptr2, &counter);
+        assert(counter == 2);
+
+        std::destroy_at(ptr1);
+        ASSERT_SAME_TYPE(decltype(std::destroy_at(ptr1)), void);
+        assert(counter == 1);
+
+        std::destroy_at(ptr2);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, ptr1, 1);
+        std::allocator_traits<Alloc>::deallocate(alloc, ptr2, 1);
+    }
+    {
+        using Alloc = std::allocator<DerivedCounted>;
+        Alloc alloc;
+        DerivedCounted* ptr1 = std::allocator_traits<Alloc>::allocate(alloc, 1);
+        DerivedCounted* ptr2 = std::allocator_traits<Alloc>::allocate(alloc, 1);
+
+        int counter = 0;
+        std::allocator_traits<Alloc>::construct(alloc, ptr1, &counter);
+        std::allocator_traits<Alloc>::construct(alloc, ptr2, &counter);
+        assert(counter == 2);
+
+        std::destroy_at(ptr1);
+        ASSERT_SAME_TYPE(decltype(std::destroy_at(ptr1)), void);
+        assert(counter == 1);
+
+        std::destroy_at(ptr2);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, ptr1, 1);
+        std::allocator_traits<Alloc>::deallocate(alloc, ptr2, 1);
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 17
+    test_arrays();
+    static_assert(test());
+    // TODO: Until std::construct_at has support for arrays, it's impossible to test this
+    //       in a constexpr context (see https://reviews.llvm.org/D114903).
+    // static_assert(test_arrays());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy_n.pass.cpp
new file mode 100644
index 0000000..4eb719a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/destroy_n.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class ForwardIt, class Size>
+// constexpr ForwardIt destroy_n(ForwardIt, Size s);
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+    int* counter_;
+    TEST_CONSTEXPR Counted(int* counter) : counter_(counter) { ++*counter_; }
+    TEST_CONSTEXPR Counted(Counted const& other) : counter_(other.counter_) { ++*counter_; }
+    TEST_CONSTEXPR_CXX20 ~Counted() { --*counter_; }
+    friend void operator&(Counted) = delete;
+};
+
+#if TEST_STD_VER > 17
+constexpr bool test_arrays()  {
+    {
+        using Array = Counted[3];
+        using Alloc = std::allocator<Array>;
+        int counter = 0;
+        Alloc alloc;
+        Array* pool = std::allocator_traits<Alloc>::allocate(alloc, 5);
+
+        for (Array* p = pool; p != pool + 5; ++p) {
+            Array& arr = *p;
+            for (int i = 0; i != 3; ++i) {
+                std::allocator_traits<Alloc>::construct(alloc, std::addressof(arr[i]), &counter);
+            }
+        }
+        assert(counter == 5 * 3);
+
+        Array* p = std::destroy_n(pool, 5);
+        ASSERT_SAME_TYPE(decltype(std::destroy_n(pool, 5)), Array*);
+        assert(p == pool + 5);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 5);
+    }
+    {
+        using Array = Counted[3][2];
+        using Alloc = std::allocator<Array>;
+        int counter = 0;
+        Alloc alloc;
+        Array* pool = std::allocator_traits<Alloc>::allocate(alloc, 5);
+
+        for (Array* p = pool; p != pool + 5; ++p) {
+            Array& arr = *p;
+            for (int i = 0; i != 3; ++i) {
+                for (int j = 0; j != 2; ++j) {
+                    std::allocator_traits<Alloc>::construct(alloc, std::addressof(arr[i][j]), &counter);
+                }
+            }
+        }
+        assert(counter == 5 * 3 * 2);
+
+        Array* p = std::destroy_n(pool, 5);
+        ASSERT_SAME_TYPE(decltype(std::destroy_n(pool, 5)), Array*);
+        assert(p == pool + 5);
+        assert(counter == 0);
+
+        std::allocator_traits<Alloc>::deallocate(alloc, pool, 5);
+    }
+
+    return true;
+}
+#endif
+
+template <class It>
+TEST_CONSTEXPR_CXX20 void test() {
+    using Alloc = std::allocator<Counted>;
+    int counter = 0;
+    Alloc alloc;
+    Counted* pool = std::allocator_traits<Alloc>::allocate(alloc, 5);
+
+    for (Counted* p = pool; p != pool + 5; ++p)
+        std::allocator_traits<Alloc>::construct(alloc, p, &counter);
+    assert(counter == 5);
+
+    It it = std::destroy_n(It(pool), 5);
+    ASSERT_SAME_TYPE(decltype(std::destroy_n(It(pool), 5)), It);
+    assert(it == It(pool + 5));
+    assert(counter == 0);
+
+    std::allocator_traits<Alloc>::deallocate(alloc, pool, 5);
+}
+
+TEST_CONSTEXPR_CXX20 bool tests() {
+    test<Counted*>();
+    test<forward_iterator<Counted*>>();
+    return true;
+}
+
+int main(int, char**) {
+    tests();
+#if TEST_STD_VER > 17
+    test_arrays();
+    static_assert(tests());
+    // TODO: Until std::construct_at has support for arrays, it's impossible to test this
+    //       in a constexpr context (see https://reviews.llvm.org/D114903).
+    // static_assert(test_arrays());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy.pass.cpp
new file mode 100644
index 0000000..b4a9269
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy.pass.cpp
@@ -0,0 +1,221 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// namespace ranges {
+//   template<nothrow-input-iterator InputIterator, nothrow-sentinel-for<InputIterator> Sentinel>
+//     requires destructible<iter_value_t<InputIterator>>
+//     constexpr InputIterator destroy(InputIterator first, Sentinel last) noexcept; // since C++20
+//   template<nothrow-input-range InputRange>
+//     requires destructible<range_value_t<InputRange>>
+//     constexpr borrowed_iterator_t<InputRange> destroy(InputRange&& range) noexcept; // since C++20
+// }
+
+#include <cassert>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::destroy)>);
+
+struct NotNothrowDtrable {
+  ~NotNothrowDtrable() noexcept(false) {}
+};
+static_assert(!std::is_invocable_v<decltype(std::ranges::destroy), NotNothrowDtrable*, NotNothrowDtrable*>);
+
+struct Counted {
+  int& count;
+
+  constexpr Counted(int& count_ref) : count(count_ref) { ++count; }
+  constexpr Counted(const Counted& rhs) : count(rhs.count) { ++count; }
+  constexpr ~Counted() { --count; }
+
+  friend void operator&(Counted) = delete;
+};
+
+template <class Iterator>
+constexpr void test() {
+  // (iterator + sentinel) overload.
+  {
+    constexpr int N = 5;
+    std::allocator<Counted> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Counted* out = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Traits::construct(alloc, out + i, counter);
+    }
+    assert(counter == N);
+
+    std::ranges::destroy(Iterator(out), Iterator(out + N));
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, out, N);
+  }
+
+  // (range) overload.
+  {
+    constexpr int N = 5;
+    std::allocator<Counted> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Counted* out = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Traits::construct(alloc, out + i, counter);
+    }
+    assert(counter == N);
+
+    auto range = std::ranges::subrange(Iterator(out), Iterator(out + N));
+    std::ranges::destroy(range);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, out, N);
+  }
+}
+
+constexpr bool tests() {
+  test<Counted*>();
+  test<forward_iterator<Counted*>>();
+
+  return true;
+}
+
+constexpr bool test_arrays() {
+  // One-dimensional array, (iterator + sentinel) overload.
+  {
+    constexpr int N = 5;
+    constexpr int M = 3;
+
+    using Array = Counted[M];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* buffer = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Array& array_ref = *(buffer + i);
+      for (int j = 0; j != M; ++j) {
+        Traits::construct(alloc, std::addressof(array_ref[j]), counter);
+      }
+    }
+    assert(counter == N * M);
+
+    std::ranges::destroy(buffer, buffer + N);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, N);
+  }
+
+  // One-dimensional array, (range) overload.
+  {
+    constexpr int N = 5;
+    constexpr int A = 3;
+
+    using Array = Counted[A];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* buffer = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Array& array_ref = *(buffer + i);
+      for (int j = 0; j != A; ++j) {
+        Traits::construct(alloc, std::addressof(array_ref[j]), counter);
+      }
+    }
+    assert(counter == N * A);
+
+    auto range = std::ranges::subrange(buffer, buffer + N);
+    std::ranges::destroy(range);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, N);
+  }
+
+  // Multidimensional array, (iterator + sentinel ) overload.
+  {
+    constexpr int N = 5;
+    constexpr int A = 3;
+    constexpr int B = 3;
+
+    using Array = Counted[A][B];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* buffer = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Array& array_ref = *(buffer + i);
+      for (int j = 0; j != A; ++j) {
+        for (int k = 0; k != B; ++k) {
+          Traits::construct(alloc, std::addressof(array_ref[j][k]), counter);
+        }
+      }
+    }
+    assert(counter == N * A * B);
+
+    std::ranges::destroy(buffer, buffer + N);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, N);
+  }
+
+  // Multidimensional array, (range) overload.
+  {
+    constexpr int N = 5;
+    constexpr int A = 3;
+    constexpr int B = 3;
+
+    using Array = Counted[A][B];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* buffer = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Array& array_ref = *(buffer + i);
+      for (int j = 0; j != A; ++j) {
+        for (int k = 0; k != B; ++k) {
+          Traits::construct(alloc, std::addressof(array_ref[j][k]), counter);
+        }
+      }
+    }
+    assert(counter == N * A * B);
+
+    std::ranges::destroy(buffer, buffer + N);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, N);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  test_arrays();
+
+  static_assert(tests());
+  // TODO: Until std::construct_at has support for arrays, it's impossible to test this
+  //       in a constexpr context (see https://reviews.llvm.org/D114903).
+  // static_assert(test_arrays());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy_at.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy_at.pass.cpp
new file mode 100644
index 0000000..36b3aa8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy_at.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// namespace ranges {
+//   template<destructible T>
+//     constexpr void destroy_at(T* location) noexcept; // since C++20
+// }
+
+#include <cassert>
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::destroy_at)>);
+
+struct NotNothrowDtrable {
+  ~NotNothrowDtrable() noexcept(false) {}
+};
+static_assert(!std::is_invocable_v<decltype(std::ranges::destroy_at), NotNothrowDtrable*>);
+
+struct Counted {
+  int& count;
+
+  constexpr Counted(int& count_ref) : count(count_ref) { ++count; }
+  constexpr ~Counted() { --count; }
+
+  friend void operator&(Counted) = delete;
+};
+
+struct VirtualCountedBase {
+  int& count;
+
+  constexpr VirtualCountedBase(int& count_ref) : count(count_ref) { ++count; }
+  constexpr virtual ~VirtualCountedBase() { --count; }
+
+  void operator&() const = delete;
+};
+
+struct VirtualCountedDerived : VirtualCountedBase {
+  constexpr VirtualCountedDerived(int& count_ref) : VirtualCountedBase(count_ref) {}
+
+  // Without a definition, GCC gives an error when the destructor is invoked in a constexpr context (see
+  // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93413).
+  constexpr ~VirtualCountedDerived() override {}
+};
+
+constexpr bool test() {
+  // Destroying a "trivial" object.
+  {
+    std::allocator<Counted> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Counted* buffer = Traits::allocate(alloc, 2);
+    Traits::construct(alloc, buffer, counter);
+    Traits::construct(alloc, buffer + 1, counter);
+    assert(counter == 2);
+
+    std::ranges::destroy_at(buffer);
+    assert(counter == 1);
+    std::ranges::destroy_at(buffer + 1);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, 2);
+  }
+
+  // Destroying a derived object with a virtual destructor.
+  {
+    std::allocator<VirtualCountedDerived> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    VirtualCountedDerived* buffer = Traits::allocate(alloc, 2);
+    Traits::construct(alloc, buffer, counter);
+    Traits::construct(alloc, buffer + 1, counter);
+    assert(counter == 2);
+
+    std::ranges::destroy_at(buffer);
+    assert(counter == 1);
+    std::ranges::destroy_at(buffer + 1);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, 2);
+  }
+
+  return true;
+}
+
+constexpr bool test_arrays() {
+  // Pointer to an array.
+  {
+    using Array = Counted[3];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* array = Traits::allocate(alloc, 1);
+    Array& array_ref = *array;
+    for (int i = 0; i != 3; ++i) {
+      Traits::construct(alloc, std::addressof(array_ref[i]), counter);
+    }
+    assert(counter == 3);
+
+    std::ranges::destroy_at(array);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, array, 1);
+  }
+
+  // Pointer to a two-dimensional array.
+  {
+    using Array = Counted[3][2];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* array = Traits::allocate(alloc, 1);
+    Array& array_ref = *array;
+    for (int i = 0; i != 3; ++i) {
+      for (int j = 0; j != 2; ++j) {
+        Traits::construct(alloc, std::addressof(array_ref[i][j]), counter);
+      }
+    }
+    assert(counter == 3 * 2);
+
+    std::ranges::destroy_at(array);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, array, 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_arrays();
+
+  static_assert(test());
+  // TODO: Until std::construct_at has support for arrays, it's impossible to test this
+  //       in a constexpr context (see https://reviews.llvm.org/D114903).
+  // static_assert(test_arrays());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy_n.pass.cpp
new file mode 100644
index 0000000..c83fd78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/specialized.destroy/ranges_destroy_n.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// namespace ranges {
+//   template<nothrow-input-iterator InputIterator>
+//     requires destructible<iter_value_t<InputIterator>>
+//     constexpr InputIterator destroy_n(InputIterator first, iter_difference_t<InputIterator> n) noexcept; // since C++20
+// }
+
+#include <cassert>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "test_iterators.h"
+#include "test_macros.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::destroy_n)>);
+
+struct NotNothrowDtrable {
+  ~NotNothrowDtrable() noexcept(false) {}
+};
+static_assert(!std::is_invocable_v<decltype(std::ranges::destroy_n), NotNothrowDtrable*, int>);
+
+struct Counted {
+  int& count;
+
+  constexpr Counted(int& count_ref) : count(count_ref) { ++count; }
+  constexpr Counted(const Counted& rhs) : count(rhs.count) { ++count; }
+  constexpr ~Counted() { --count; }
+
+  friend void operator&(Counted) = delete;
+};
+
+template <class Iterator>
+constexpr void test() {
+  {
+    constexpr int N = 5;
+    std::allocator<Counted> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Counted* out = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Traits::construct(alloc, out + i, counter);
+    }
+    assert(counter == N);
+
+    std::ranges::destroy_n(Iterator(out), N);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, out, N);
+  }
+}
+
+constexpr bool tests() {
+  test<Counted*>();
+  test<forward_iterator<Counted*>>();
+
+  return true;
+}
+
+constexpr bool test_arrays() {
+  // One-dimensional array.
+  {
+    constexpr int N = 5;
+    constexpr int M = 3;
+
+    using Array = Counted[M];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* buffer = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Array& array_ref = *(buffer + i);
+      for (int j = 0; j != M; ++j) {
+        Traits::construct(alloc, std::addressof(array_ref[j]), counter);
+      }
+    }
+    assert(counter == N * M);
+
+    std::ranges::destroy_n(buffer, N);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, N);
+  }
+
+  // Multidimensional array.
+  {
+    constexpr int N = 5;
+    constexpr int A = 3;
+    constexpr int B = 3;
+
+    using Array = Counted[A][B];
+    std::allocator<Array> alloc;
+    using Traits = std::allocator_traits<decltype(alloc)>;
+    int counter = 0;
+
+    Array* buffer = Traits::allocate(alloc, N);
+    for (int i = 0; i != N; ++i) {
+      Array& array_ref = *(buffer + i);
+      for (int j = 0; j != A; ++j) {
+        for (int k = 0; k != B; ++k) {
+          Traits::construct(alloc, std::addressof(array_ref[j][k]), counter);
+        }
+      }
+    }
+    assert(counter == N * A * B);
+
+    std::ranges::destroy_n(buffer, N);
+    assert(counter == 0);
+
+    Traits::deallocate(alloc, buffer, N);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  tests();
+  test_arrays();
+
+  static_assert(tests());
+  // TODO: Until std::construct_at has support for arrays, it's impossible to test this
+  //       in a constexpr context (see https://reviews.llvm.org/D114903).
+  // static_assert(test_arrays());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/ranges_uninitialized_default_construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/ranges_uninitialized_default_construct.pass.cpp
new file mode 100644
index 0000000..4581f1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/ranges_uninitialized_default_construct.pass.cpp
@@ -0,0 +1,192 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <nothrow-forward-iterator ForwardIterator, nothrow-sentinel-for<ForwardIterator> Sentinel>
+//   requires default_initializable<iter_value_t<ForwardIterator>>
+// ForwardIterator ranges::uninitialized_default_construct(ForwardIterator first, Sentinel last);
+//
+// template <nothrow-forward-range ForwardRange>
+//   requires default_initializable<range_value_t<ForwardRange>>
+// borrowed_iterator_t<ForwardRange> ranges::uninitialized_default_construct(ForwardRange&& range);
+
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_default_construct)>);
+
+struct NotDefaultCtrable { NotDefaultCtrable() = delete; };
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_default_construct),
+    NotDefaultCtrable*, NotDefaultCtrable*>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Buffer<Counted, 1> buf;
+
+    std::ranges::uninitialized_default_construct(buf.begin(), buf.begin());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    std::ranges::uninitialized_default_construct(std::ranges::empty_view<Counted>());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    forward_iterator<Counted*> it(buf.begin());
+    auto range = std::ranges::subrange(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+    std::ranges::uninitialized_default_construct(range.begin(), range.end());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    std::ranges::uninitialized_default_construct(range);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+  }
+
+  // A range containing several objects, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_default_construct(buf.begin(), buf.end());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // A range containing several objects, (range) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    auto range = std::ranges::subrange(buf.begin(), buf.end());
+    std::ranges::uninitialized_default_construct(range);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Using `counted_iterator`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_default_construct(
+        std::counted_iterator(buf.begin(), N), std::default_sentinel);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Using `views::counted`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_default_construct(std::views::counted(buf.begin(), N));
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Using `reverse_view`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    auto range = std::ranges::subrange(buf.begin(), buf.begin() + N);
+    std::ranges::uninitialized_default_construct(std::ranges::reverse_view(range));
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    Buffer<Counted, 5> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object (counting from one).
+    try {
+      std::ranges::uninitialized_default_construct(buf.begin(), buf.end());
+    } catch(...) {}
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+    std::destroy(buf.begin(), buf.begin() + Counted::total_objects);
+    Counted::reset();
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (range) overload.
+  {
+    Buffer<Counted, 5> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object.
+    try {
+      std::ranges::uninitialized_default_construct(buf);
+    } catch(...) {}
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+    std::destroy(buf.begin(), buf.begin() + Counted::total_objects);
+    Counted::reset();
+  }
+#endif  // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_default_construct(buf.cbegin(), buf.cend());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Works with const iterators, (range) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+    auto range = std::ranges::subrange(buf.cbegin(), buf.cend());
+
+    std::ranges::uninitialized_default_construct(range);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/ranges_uninitialized_default_construct_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/ranges_uninitialized_default_construct_n.pass.cpp
new file mode 100644
index 0000000..9bebe4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/ranges_uninitialized_default_construct_n.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <nothrow-forward-iterator ForwardIterator>
+//   requires default_initializable<iter_value_t<ForwardIterator>>
+// ForwardIterator ranges::uninitialized_default_construct_n(ForwardIterator first,
+//     iter_difference_t<ForwardIterator> n);
+
+#include <cassert>
+#include <memory>
+#include <ranges>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_default_construct_n)>);
+
+struct NotDefaultCtrable { NotDefaultCtrable() = delete; };
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_default_construct_n),
+    NotDefaultCtrable*, int>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Buffer<Counted, 1> buf;
+
+    std::ranges::uninitialized_default_construct_n(buf.begin(), 0);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+  }
+
+  // A range containing several objects.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_default_construct_n(buf.begin(), N);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object (counting from one).
+    try {
+      std::ranges::uninitialized_default_construct_n(buf.begin(), N);
+    } catch(...) {}
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+    std::destroy(buf.begin(), buf.begin() + Counted::total_objects);
+    Counted::reset();
+  }
+#endif  // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_default_construct_n(buf.cbegin(), N);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/uninitialized_default_construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/uninitialized_default_construct.pass.cpp
new file mode 100644
index 0000000..89e684b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/uninitialized_default_construct.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class ForwardIt>
+// void uninitialized_default_construct(ForwardIt, ForwardIt);
+
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+  static int count;
+  static int constructed;
+  explicit Counted() { ++count; ++constructed; }
+  Counted(Counted const&) { assert(false); }
+  ~Counted() { --count; }
+  friend void operator&(Counted) = delete;
+};
+int Counted::count = 0;
+int Counted::constructed = 0;
+
+
+struct ThrowsCounted {
+  static int count;
+  static int constructed;
+  static int throw_after;
+  explicit ThrowsCounted() {
+      ++constructed;
+      if (throw_after > 0 && --throw_after == 0) {
+          TEST_THROW(1);
+      }
+      ++count;
+  }
+  ThrowsCounted(ThrowsCounted const&) { assert(false); }
+  ~ThrowsCounted() { assert(count > 0); --count; }
+  friend void operator&(ThrowsCounted) = delete;
+};
+int ThrowsCounted::count = 0;
+int ThrowsCounted::constructed = 0;
+int ThrowsCounted::throw_after = 0;
+
+
+void test_ctor_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using It = forward_iterator<ThrowsCounted*>;
+    const int N = 5;
+    alignas(ThrowsCounted) char pool[sizeof(ThrowsCounted)*N] = {};
+    ThrowsCounted* p = (ThrowsCounted*)pool;
+    try {
+        ThrowsCounted::throw_after = 4;
+        std::uninitialized_default_construct(It(p), It(p+N));
+        assert(false);
+    } catch (...) {}
+    assert(ThrowsCounted::count == 0);
+    assert(ThrowsCounted::constructed == 4); // Fourth construction throws
+#endif
+}
+
+void test_counted()
+{
+    using It = forward_iterator<Counted*>;
+    const int N = 5;
+    alignas(Counted) char pool[sizeof(Counted)*N] = {};
+    Counted* p = (Counted*)pool;
+    std::uninitialized_default_construct(It(p), It(p+1));
+    assert(Counted::count == 1);
+    assert(Counted::constructed == 1);
+    std::uninitialized_default_construct(It(p+1), It(p+N));
+    assert(Counted::count == 5);
+    assert(Counted::constructed == 5);
+    std::destroy(p, p+N);
+    assert(Counted::count == 0);
+}
+
+int main(int, char**)
+{
+    test_counted();
+    test_ctor_throws();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/uninitialized_default_construct_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/uninitialized_default_construct_n.pass.cpp
new file mode 100644
index 0000000..58ee06a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.default/uninitialized_default_construct_n.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class ForwardIt>
+// void uninitialized_default_construct(ForwardIt, ForwardIt);
+
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+  static int count;
+  static int constructed;
+  static void reset() { count = constructed =  0; }
+  explicit Counted() { ++count; ++constructed; }
+  Counted(Counted const&) { assert(false); }
+  ~Counted() { assert(count > 0); --count; }
+  friend void operator&(Counted) = delete;
+};
+int Counted::count = 0;
+int Counted::constructed = 0;
+
+
+struct ThrowsCounted {
+  static int count;
+  static int constructed;
+  static int throw_after;
+  static void reset() { throw_after = count = constructed =  0; }
+  explicit ThrowsCounted() {
+      ++constructed;
+      if (throw_after > 0 && --throw_after == 0) {
+          TEST_THROW(1);
+      }
+      ++count;
+  }
+  ThrowsCounted(ThrowsCounted const&) { assert(false); }
+  ~ThrowsCounted() { assert(count > 0); --count; }
+  friend void operator&(ThrowsCounted) = delete;
+};
+int ThrowsCounted::count = 0;
+int ThrowsCounted::constructed = 0;
+int ThrowsCounted::throw_after = 0;
+
+void test_ctor_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using It = forward_iterator<ThrowsCounted*>;
+    const int N = 5;
+    alignas(ThrowsCounted) char pool[sizeof(ThrowsCounted)*N] = {};
+    ThrowsCounted* p = (ThrowsCounted*)pool;
+    try {
+        ThrowsCounted::throw_after = 4;
+        std::uninitialized_default_construct_n(It(p), N);
+        assert(false);
+    } catch (...) {}
+    assert(ThrowsCounted::count == 0);
+    assert(ThrowsCounted::constructed == 4); // Fourth construction throws
+#endif
+}
+
+void test_counted()
+{
+    using It = forward_iterator<Counted*>;
+    const int N = 5;
+    alignas(Counted) char pool[sizeof(Counted)*N] = {};
+    Counted* p = (Counted*)pool;
+    It e = std::uninitialized_default_construct_n(It(p), 1);
+    assert(e == It(p+1));
+    assert(Counted::count == 1);
+    assert(Counted::constructed == 1);
+    e = std::uninitialized_default_construct_n(It(p+1), 4);
+    assert(e == It(p+N));
+    assert(Counted::count == 5);
+    assert(Counted::constructed == 5);
+    std::destroy(p, p+N);
+    assert(Counted::count == 0);
+}
+
+int main(int, char**)
+{
+    test_counted();
+    test_ctor_throws();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/ranges_uninitialized_value_construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/ranges_uninitialized_value_construct.pass.cpp
new file mode 100644
index 0000000..ad74b82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/ranges_uninitialized_value_construct.pass.cpp
@@ -0,0 +1,212 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <nothrow-forward-iterator ForwardIterator, nothrow-sentinel-for<ForwardIterator> Sentinel>
+//   requires default_initializable<iter_value_t<ForwardIterator>>
+// ForwardIterator ranges::uninitialized_value_construct(ForwardIterator first, Sentinel last);
+//
+// template <nothrow-forward-range ForwardRange>
+//   requires default_initializable<range_value_t<ForwardRange>>
+// borrowed_iterator_t<ForwardRange> ranges::uninitialized_value_construct(ForwardRange&& range);
+
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_value_construct)>);
+
+struct NotDefaultCtrable {
+  NotDefaultCtrable() = delete;
+};
+static_assert(
+    !std::is_invocable_v<decltype(std::ranges::uninitialized_value_construct), NotDefaultCtrable*, NotDefaultCtrable*>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Buffer<Counted, 1> buf;
+
+    std::ranges::uninitialized_value_construct(buf.begin(), buf.begin());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    std::ranges::uninitialized_value_construct(std::ranges::empty_view<Counted>());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    forward_iterator<Counted*> it(buf.begin());
+    auto range = std::ranges::subrange(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+    std::ranges::uninitialized_value_construct(range.begin(), range.end());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    std::ranges::uninitialized_value_construct(range);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+  }
+
+  // A range containing several objects, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_value_construct(buf.begin(), buf.end());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // A range containing several objects, (range) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    auto range = std::ranges::subrange(buf.begin(), buf.end());
+    std::ranges::uninitialized_value_construct(range);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Using `counted_iterator`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_value_construct(std::counted_iterator(buf.begin(), N), std::default_sentinel);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Using `views::counted`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_value_construct(std::views::counted(buf.begin(), N));
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Using `reverse_view`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    auto range = std::ranges::subrange(buf.begin(), buf.begin() + N);
+    std::ranges::uninitialized_value_construct(std::ranges::reverse_view(range));
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Any existing values should be overwritten by value constructors.
+  {
+    constexpr int N = 5;
+    int buffer[N] = {42, 42, 42, 42, 42};
+
+    std::ranges::uninitialized_value_construct(buffer, buffer + 1);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == 42);
+
+    std::ranges::uninitialized_value_construct(buffer, buffer + N);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == 0);
+    assert(buffer[2] == 0);
+    assert(buffer[3] == 0);
+    assert(buffer[4] == 0);
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    Buffer<Counted, 5> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object (counting from one).
+    try {
+      std::ranges::uninitialized_value_construct(buf.begin(), buf.end());
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+    std::destroy(buf.begin(), buf.begin() + Counted::total_objects);
+    Counted::reset();
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (range) overload.
+  {
+    Buffer<Counted, 5> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object.
+    try {
+      std::ranges::uninitialized_value_construct(buf);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+    std::destroy(buf.begin(), buf.begin() + Counted::total_objects);
+    Counted::reset();
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_value_construct(buf.cbegin(), buf.cend());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Works with const iterators, (range) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    auto range = std::ranges::subrange(buf.cbegin(), buf.cend());
+    std::ranges::uninitialized_value_construct(range);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/ranges_uninitialized_value_construct_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/ranges_uninitialized_value_construct_n.pass.cpp
new file mode 100644
index 0000000..8f315ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/ranges_uninitialized_value_construct_n.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <nothrow-forward-iterator ForwardIterator>
+//   requires default_initializable<iter_value_t<ForwardIterator>>
+// ForwardIterator ranges::uninitialized_value_construct_n(ForwardIterator first,
+//     iter_difference_t<ForwardIterator> n);
+
+#include <cassert>
+#include <memory>
+#include <ranges>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_value_construct_n)>);
+
+struct NotDefaultCtrable {
+  NotDefaultCtrable() = delete;
+};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_value_construct_n), NotDefaultCtrable*, int>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Buffer<Counted, 1> buf;
+
+    std::ranges::uninitialized_value_construct_n(buf.begin(), 0);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+  }
+
+  // A range containing several objects.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_value_construct_n(buf.begin(), N);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Any existing values should be overwritten by value constructors.
+  {
+    constexpr int N = 5;
+    int buffer[N] = {42, 42, 42, 42, 42};
+
+    std::ranges::uninitialized_value_construct_n(buffer, 1);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == 42);
+
+    std::ranges::uninitialized_value_construct_n(buffer, N);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == 0);
+    assert(buffer[2] == 0);
+    assert(buffer[3] == 0);
+    assert(buffer[4] == 0);
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object (counting from one).
+    try {
+      std::ranges::uninitialized_value_construct_n(buf.begin(), N);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+    std::destroy(buf.begin(), buf.begin() + Counted::total_objects);
+    Counted::reset();
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_value_construct_n(buf.cbegin(), N);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/uninitialized_value_construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/uninitialized_value_construct.pass.cpp
new file mode 100644
index 0000000..e24b693
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/uninitialized_value_construct.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class ForwardIt>
+// void uninitialized_value_construct(ForwardIt, ForwardIt);
+
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+  static int count;
+  static int constructed;
+  static void reset() { count = constructed =  0; }
+  explicit Counted() { ++count; ++constructed; }
+  Counted(Counted const&) { assert(false); }
+  ~Counted() { assert(count > 0); --count; }
+  friend void operator&(Counted) = delete;
+};
+int Counted::count = 0;
+int Counted::constructed = 0;
+
+
+struct ThrowsCounted {
+  static int count;
+  static int constructed;
+  static int throw_after;
+  static void reset() { throw_after = count = constructed =  0; }
+  explicit ThrowsCounted() {
+      ++constructed;
+      if (throw_after > 0 && --throw_after == 0) {
+          TEST_THROW(1);
+      }
+      ++count;
+  }
+  ThrowsCounted(ThrowsCounted const&) { assert(false); }
+  ~ThrowsCounted() { assert(count > 0); --count; }
+  friend void operator&(ThrowsCounted) = delete;
+};
+int ThrowsCounted::count = 0;
+int ThrowsCounted::constructed = 0;
+int ThrowsCounted::throw_after = 0;
+
+void test_ctor_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using It = forward_iterator<ThrowsCounted*>;
+    const int N = 5;
+    alignas(ThrowsCounted) char pool[sizeof(ThrowsCounted)*N] = {};
+    ThrowsCounted* p = (ThrowsCounted*)pool;
+    try {
+        ThrowsCounted::throw_after = 4;
+        std::uninitialized_value_construct(It(p), It(p+N));
+        assert(false);
+    } catch (...) {}
+    assert(ThrowsCounted::count == 0);
+    assert(ThrowsCounted::constructed == 4); // forth construction throws
+#endif
+}
+
+void test_counted()
+{
+    using It = forward_iterator<Counted*>;
+    const int N = 5;
+    alignas(Counted) char pool[sizeof(Counted)*N] = {};
+    Counted* p = (Counted*)pool;
+    std::uninitialized_value_construct(It(p), It(p+1));
+    assert(Counted::count == 1);
+    assert(Counted::constructed == 1);
+    std::uninitialized_value_construct(It(p+1), It(p+N));
+    assert(Counted::count == 5);
+    assert(Counted::constructed == 5);
+    std::destroy(p, p+N);
+    assert(Counted::count == 0);
+}
+
+void test_value_initialized()
+{
+    using It = forward_iterator<int*>;
+    const int N = 5;
+    int pool[N] = {-1, -1, -1, -1, -1};
+    int* p = pool;
+    std::uninitialized_value_construct(It(p), It(p+1));
+    assert(pool[0] == 0);
+    assert(pool[1] == -1);
+    std::uninitialized_value_construct(It(p+1), It(p+N));
+    assert(pool[1] == 0);
+    assert(pool[2] == 0);
+    assert(pool[3] == 0);
+    assert(pool[4] == 0);
+}
+
+int main(int, char**)
+{
+    test_counted();
+    test_value_initialized();
+    test_ctor_throws();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/uninitialized_value_construct_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/uninitialized_value_construct_n.pass.cpp
new file mode 100644
index 0000000..cc7638d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.construct.value/uninitialized_value_construct_n.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class ForwardIt>
+// void uninitialized_value_construct(ForwardIt, ForwardIt);
+
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+  static int count;
+  static int constructed;
+  static void reset() { count = constructed =  0; }
+  explicit Counted() { ++count; ++constructed; }
+  Counted(Counted const&) { assert(false); }
+  ~Counted() { --count; }
+  friend void operator&(Counted) = delete;
+};
+int Counted::count = 0;
+int Counted::constructed = 0;
+
+struct ThrowsCounted {
+  static int count;
+  static int constructed;
+  static int throw_after;
+  static void reset() { throw_after = count = constructed =  0; }
+  explicit ThrowsCounted() {
+      ++constructed;
+      if (throw_after > 0 && --throw_after == 0) {
+          TEST_THROW(1);
+      }
+      ++count;
+  }
+  ThrowsCounted(ThrowsCounted const&) { assert(false); }
+  ~ThrowsCounted() { --count; }
+  friend void operator&(ThrowsCounted) = delete;
+};
+int ThrowsCounted::count = 0;
+int ThrowsCounted::constructed = 0;
+int ThrowsCounted::throw_after = 0;
+
+void test_ctor_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using It = forward_iterator<ThrowsCounted*>;
+    const int N = 5;
+    alignas(ThrowsCounted) char pool[sizeof(ThrowsCounted)*N] = {};
+    ThrowsCounted* p = (ThrowsCounted*)pool;
+    try {
+        ThrowsCounted::throw_after = 4;
+        std::uninitialized_value_construct_n(It(p), N);
+        assert(false);
+    } catch (...) {}
+    assert(ThrowsCounted::count == 3);
+    assert(ThrowsCounted::constructed == 4); // forth construction throws
+    std::destroy(p, p+3);
+    assert(ThrowsCounted::count == 0);
+#endif
+}
+
+void test_counted()
+{
+    using It = forward_iterator<Counted*>;
+    const int N = 5;
+    alignas(Counted) char pool[sizeof(Counted)*N] = {};
+    Counted* p = (Counted*)pool;
+    It e = std::uninitialized_value_construct_n(It(p), 1);
+    assert(e == It(p+1));
+    assert(Counted::count == 1);
+    assert(Counted::constructed == 1);
+    e = std::uninitialized_value_construct_n(It(p+1), 4);
+    assert(e == It(p+N));
+    assert(Counted::count == 5);
+    assert(Counted::constructed == 5);
+    std::destroy(p, p+N);
+    assert(Counted::count == 0);
+}
+
+void test_value_initialized()
+{
+    using It = forward_iterator<int*>;
+    const int N = 5;
+    int pool[N] = {-1, -1, -1, -1, -1};
+    int* p = pool;
+    It e = std::uninitialized_value_construct_n(It(p), 1);
+    assert(e == It(p+1));
+    assert(pool[0] == 0);
+    assert(pool[1] == -1);
+    e = std::uninitialized_value_construct_n(It(p+1), 4);
+    assert(e == It(p+N));
+    assert(pool[1] == 0);
+    assert(pool[2] == 0);
+    assert(pool[3] == 0);
+    assert(pool[4] == 0);
+}
+
+int main(int, char**)
+{
+    test_counted();
+    test_value_initialized();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/ranges_uninitialized_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/ranges_uninitialized_copy.pass.cpp
new file mode 100644
index 0000000..fb3ae6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/ranges_uninitialized_copy.pass.cpp
@@ -0,0 +1,400 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// template<input_iterator I, sentinel-for<I> S1, nothrow-forward-iterator O, nothrow-sentinel-for<O> S2>
+//   requires constructible_from<iter_value_t<O>, iter_reference_t<I>>
+// uninitialized_copy_result<I, O> ranges::uninitialized_copy(I ifirst, S1 ilast, O ofirst, S2 olast); // since C++20
+//
+// template<input_range IR, nothrow-forward-range OR>
+//   requires constructible_from<range_value_t<OR>, range_reference_t<IR>>
+// uninitialized_copy_result<borrowed_iterator_t<IR>, borrowed_iterator_t<OR>> ranges::uninitialized_copy(IR&& in_range, OR&& out_range); // since C++20
+
+#include <algorithm>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_copy)>);
+
+static_assert(std::is_invocable_v<decltype(std::ranges::uninitialized_copy), int*, int*, long*, long*>);
+struct NotConvertibleFromInt {};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_copy), int*, int*, NotConvertibleFromInt*,
+                                   NotConvertibleFromInt*>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Counted in[] = {Counted()};
+    Buffer<Counted, 1> out;
+    Counted::reset();
+
+    {
+      auto result = std::ranges::uninitialized_copy(in, in, out.begin(), out.end());
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == in);
+      assert(result.out == out.begin());
+    }
+
+    {
+      std::ranges::empty_view<Counted> view;
+      auto result = std::ranges::uninitialized_copy(view, out);
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == view.begin());
+      assert(result.out == out.begin());
+    }
+
+    {
+      forward_iterator<Counted*> it(in);
+      std::ranges::subrange range(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+
+      auto result = std::ranges::uninitialized_copy(range.begin(), range.end(), out.begin(), out.end());
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == it);
+      assert(result.out == out.begin());
+    }
+
+    {
+      forward_iterator<Counted*> it(in);
+      std::ranges::subrange range(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+
+      auto result = std::ranges::uninitialized_copy(range, out);
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == it);
+      assert(result.out == out.begin());
+    }
+    Counted::reset();
+  }
+
+  // A range containing several objects, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_copy(in, in + N, out.begin(), out.end());
+    ASSERT_SAME_TYPE(decltype(result), std::ranges::uninitialized_copy_result<Counted*, Counted*>);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_copies == N);
+    assert(Counted::total_moves == 0);
+
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+    assert(result.in == in + N);
+    assert(result.out == out.end());
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // A range containing several objects, (range) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::subrange range(in, in + N);
+    auto result = std::ranges::uninitialized_copy(range, out);
+    ASSERT_SAME_TYPE(decltype(result), std::ranges::uninitialized_copy_result<Counted*, Counted*>);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_copies == N);
+    assert(Counted::total_moves == 0);
+
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+    assert(result.in == in + N);
+    assert(result.out == out.end());
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Using `counted_iterator`.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    std::counted_iterator iter(in, N);
+    auto result = std::ranges::uninitialized_copy(iter, std::default_sentinel, out.begin(), out.end());
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_copies == N);
+    assert(Counted::total_moves == 0);
+    assert(std::equal(in, in + N, out.begin(), out.begin() + N));
+
+    assert(result.in == iter + N);
+    assert(result.out == out.begin() + N);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // Using `views::counted`.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    auto view = std::views::counted(in, N);
+    auto result = std::ranges::uninitialized_copy(view, out);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_copies == N);
+    assert(Counted::total_moves == 0);
+    assert(std::equal(in, in + N, out.begin(), out.begin() + N));
+
+    assert(result.in == view.begin() + N);
+    assert(result.out == out.begin() + N);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // Using `reverse_view`.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    std::ranges::subrange range(in, in + N);
+    auto view = std::ranges::views::reverse(range);
+    auto result = std::ranges::uninitialized_copy(view, out);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_copies == N);
+    assert(Counted::total_moves == 0);
+
+    Counted expected[N] = {Counted(3), Counted(2), Counted(1)};
+    assert(std::equal(out.begin(), out.begin() + N, expected, expected + N));
+
+    assert(result.in == view.begin() + N);
+    assert(result.out == out.begin() + N);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // Any existing values should be overwritten by copy constructors.
+  {
+    constexpr int N = 5;
+    int in[N] = {1, 2, 3, 4, 5};
+    int out[N] = {6, 7, 8, 9, 10};
+    assert(!std::equal(in, in + N, out, out + N));
+
+    std::ranges::uninitialized_copy(in, in + 1, out, out + N);
+    assert(out[0] == 1);
+    assert(out[1] == 7);
+
+    std::ranges::uninitialized_copy(in, in + N, out, out + N);
+    assert(std::equal(in, in + N, out, out + N));
+  }
+
+  // An exception is thrown while objects are being created -- objects not yet overwritten should
+  // stay valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Counted out[N] = {Counted(6), Counted(7), Counted(8), Counted(9), Counted(10)};
+    Counted::reset();
+
+    Counted::throw_on = M; // When constructing out[3].
+    try {
+      std::ranges::uninitialized_copy(in, in + N, out, out + N);
+      assert(false);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_copies == M);
+    assert(Counted::total_moves == 0);
+
+    assert(out[4].value == 10);
+  }
+  Counted::reset();
+
+  // An exception is thrown while objects are being created -- objects not yet overwritten should
+  // stay valid. (range) overload.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Counted out[N] = {Counted(6), Counted(7), Counted(8), Counted(9), Counted(10)};
+    Counted::reset();
+
+    Counted::throw_on = M; // When constructing out[3].
+    try {
+      std::ranges::uninitialized_copy(in, out);
+      assert(false);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_copies == M);
+    assert(Counted::total_moves == 0);
+
+    assert(out[4].value == 10);
+  }
+  Counted::reset();
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::uninitialized_copy(in, in + N, out.cbegin(), out.cend());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Works with const iterators, (range) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::subrange out_range(out.cbegin(), out.cend());
+    std::ranges::uninitialized_copy(in, out_range);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Conversions, (iter, sentinel) overload.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<double, N> out;
+
+    std::ranges::uninitialized_copy(in, in + N, out.begin(), out.end());
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+  }
+
+  // Conversions, (range) overload.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<double, N> out;
+
+    std::ranges::uninitialized_copy(in, out);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+  }
+
+  // Destination range is shorter than the source range, (iter, sentinel) overload.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, M> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_copy(in, in + N, out.begin(), out.end());
+    assert(Counted::current_objects == M);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_copies == M);
+    assert(Counted::total_moves == 0);
+
+    assert(std::equal(in, in + M, out.begin(), out.end()));
+    assert(result.in == in + M);
+    assert(result.out == out.end());
+  }
+
+  // Destination range is shorter than the source range, (range) overload.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, M> out;
+    Counted::reset();
+
+    std::ranges::subrange range(in, in + N);
+    auto result = std::ranges::uninitialized_copy(range, out);
+    assert(Counted::current_objects == M);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_copies == M);
+    assert(Counted::total_moves == 0);
+
+    assert(std::equal(in, in + M, out.begin(), out.end()));
+    assert(result.in == in + M);
+    assert(result.out == out.end());
+  }
+
+  // Move-only iterators are supported.
+  {
+    using MoveOnlyIter = cpp20_input_iterator<const int*>;
+    static_assert(!std::is_copy_constructible_v<MoveOnlyIter>);
+
+    constexpr int N = 3;
+    struct MoveOnlyRange {
+      int buffer[N] = {1, 2, 3};
+      auto begin() const { return MoveOnlyIter(buffer); }
+      auto end() const { return sentinel_wrapper<MoveOnlyIter>(MoveOnlyIter(buffer)); }
+    };
+    static_assert(std::ranges::input_range<MoveOnlyRange>);
+    MoveOnlyRange in;
+
+    // (iter, sentinel) overload.
+    {
+      Buffer<int, N> out;
+      std::ranges::uninitialized_copy(in.begin(), in.end(), out.begin(), out.end());
+    }
+
+    // (range) overload.
+    {
+      Buffer<int, N> out;
+      std::ranges::uninitialized_copy(in, out);
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/ranges_uninitialized_copy_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/ranges_uninitialized_copy_n.pass.cpp
new file mode 100644
index 0000000..013db78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/ranges_uninitialized_copy_n.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// template<input_iterator I, nothrow-forward-iterator O, nothrow-sentinel-for<O> S>
+//   requires constructible_from<iter_value_t<O>, iter_reference_t<I>>
+// uninitialized_copy_n_result<I, O> uninitialized_copy_n(I ifirst, iter_difference_t<I> n, O ofirst, S olast); // since C++20
+
+#include <algorithm>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_copy_n)>);
+
+static_assert(std::is_invocable_v<decltype(std::ranges::uninitialized_copy_n), int*, size_t, long*, long*>);
+struct NotConvertibleFromInt {};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_copy_n), int*, size_t, NotConvertibleFromInt*,
+                                   NotConvertibleFromInt*>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Counted in[] = {Counted()};
+    Buffer<Counted, 1> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_copy_n(in, 0, out.begin(), out.end());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+    assert(Counted::total_copies == 0);
+    assert(result.in == in);
+    assert(result.out == out.begin());
+  }
+  Counted::reset();
+
+  // A range containing several objects.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_copy_n(in, N, out.begin(), out.end());
+    ASSERT_SAME_TYPE(decltype(result), std::ranges::uninitialized_copy_n_result<Counted*, Counted*>);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_copies == N);
+    assert(Counted::total_moves == 0);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+    assert(result.in == in + N);
+    assert(result.out == out.end());
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Counted out[N] = {Counted(6), Counted(7), Counted(8), Counted(9), Counted(10)};
+    Counted::reset();
+
+    Counted::throw_on = M; // When constructing out[3].
+    try {
+      std::ranges::uninitialized_copy_n(in, N, out, out + N);
+      assert(false);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_copies == M);
+    assert(Counted::total_moves == 0);
+
+    assert(out[4].value == 10);
+  }
+  Counted::reset();
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::uninitialized_copy_n(in, N, out.cbegin(), out.cend());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Conversions.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<double, N> out;
+
+    std::ranges::uninitialized_copy_n(in, N, out.begin(), out.end());
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+  }
+
+  // Destination range is shorter than the source range.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, M> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_copy_n(in, N, out.begin(), out.end());
+    assert(Counted::current_objects == M);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_copies == M);
+    assert(Counted::total_moves == 0);
+
+    assert(std::equal(in, in + M, out.begin(), out.end()));
+    assert(result.in == in + M);
+    assert(result.out == out.end());
+  }
+
+  // Move-only iterators are supported.
+  {
+    using MoveOnlyIter = cpp20_input_iterator<const int*>;
+    static_assert(!std::is_copy_constructible_v<MoveOnlyIter>);
+
+    constexpr int N = 3;
+    int buffer[N] = {1, 2, 3};
+
+    MoveOnlyIter in(buffer);
+    Buffer<int, N> out;
+    std::ranges::uninitialized_copy_n(std::move(in), N, out.begin(), out.end());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/uninitialized_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/uninitialized_copy.pass.cpp
new file mode 100644
index 0000000..c3b6e18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/uninitialized_copy.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class InputIterator, class ForwardIterator>
+//   ForwardIterator
+//   uninitialized_copy(InputIterator first, InputIterator last,
+//                      ForwardIterator result);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count_;
+    static int population_;
+    int data_;
+    explicit B() : data_(1) { ++population_; }
+    B(const B &b) {
+      ++count_;
+      if (count_ == 3)
+        TEST_THROW(1);
+      data_ = b.data_;
+      ++population_;
+    }
+    ~B() {data_ = 0; --population_; }
+};
+
+int B::count_ = 0;
+int B::population_ = 0;
+
+struct Nasty
+{
+    Nasty() : i_ ( counter_++ ) {}
+    Nasty * operator &() const { return nullptr; }
+    int i_;
+    static int counter_;
+};
+
+int Nasty::counter_ = 0;
+
+int main(int, char**)
+{
+    {
+    const int N = 5;
+    char pool[sizeof(B)*N] = {0};
+    B* bp = (B*)pool;
+    B b[N];
+    assert(B::population_ == N);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        std::uninitialized_copy(b, b+N, bp);
+        assert(false);
+    }
+    catch (...)
+    {
+        assert(B::population_ == N);
+    }
+#endif
+    B::count_ = 0;
+    std::uninitialized_copy(b, b+2, bp);
+    for (int i = 0; i < 2; ++i)
+        assert(bp[i].data_ == 1);
+    assert(B::population_ == N + 2);
+    }
+
+    {
+    const int N = 5;
+    char pool[sizeof(Nasty)*N] = {0};
+    Nasty * p = (Nasty *) pool;
+    Nasty arr[N];
+    std::uninitialized_copy(arr, arr+N, p);
+    for (int i = 0; i < N; ++i) {
+        assert(arr[i].i_ == i);
+        assert(  p[i].i_ == i);
+        }
+    }
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/uninitialized_copy_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/uninitialized_copy_n.pass.cpp
new file mode 100644
index 0000000..9d0fae3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.copy/uninitialized_copy_n.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class InputIterator, class Size, class ForwardIterator>
+//   ForwardIterator
+//   uninitialized_copy_n(InputIterator first, Size n,
+//                        ForwardIterator result);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count_;
+    static int population_;
+    int data_;
+    explicit B() : data_(1) { ++population_; }
+    B(const B &b) {
+      ++count_;
+      if (count_ == 3)
+        TEST_THROW(1);
+      data_ = b.data_;
+      ++population_;
+    }
+    ~B() {data_ = 0; --population_; }
+};
+
+int B::population_ = 0;
+int B::count_ = 0;
+
+struct Nasty
+{
+    Nasty() : i_ ( counter_++ ) {}
+    Nasty * operator &() const { return nullptr; }
+    int i_;
+    static int counter_;
+};
+
+int Nasty::counter_ = 0;
+
+int main(int, char**)
+{
+    {
+    const int N = 5;
+    char pool[sizeof(B)*N] = {0};
+    B* bp = (B*)pool;
+    B b[N];
+    assert(B::population_ == N);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        std::uninitialized_copy_n(b, 5, bp);
+        assert(false);
+    }
+    catch (...)
+    {
+        assert(B::population_ == N);
+    }
+#endif
+    B::count_ = 0;
+    std::uninitialized_copy_n(b, 2, bp);
+    for (int i = 0; i < 2; ++i)
+        assert(bp[i].data_ == 1);
+    assert(B::population_ == N + 2);
+    }
+
+    {
+    const int N = 5;
+    char pool[sizeof(Nasty)*N] = {0};
+    Nasty * p = (Nasty *) pool;
+    Nasty arr[N];
+    std::uninitialized_copy_n(arr, N, p);
+    for (int i = 0; i < N; ++i) {
+        assert(arr[i].i_ == i);
+        assert(  p[i].i_ == i);
+    }
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill.n/ranges_uninitialized_fill_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill.n/ranges_uninitialized_fill_n.pass.cpp
new file mode 100644
index 0000000..a905507
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill.n/ranges_uninitialized_fill_n.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <nothrow-forward-iterator ForwardIterator, class T>
+//   requires constructible_from<iter_value_t<ForwardIterator>, const T&>
+// ForwardIterator ranges::uninitialized_fill_n(ForwardIterator first, iter_difference_t<ForwardIterator> n);
+
+#include <algorithm>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_fill_n)>);
+
+struct NotConvertibleFromInt {};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_fill_n), NotConvertibleFromInt*, size_t, int>);
+
+int main(int, char**) {
+  constexpr int value = 42;
+  Counted x(value);
+  Counted::reset();
+  auto pred = [](const Counted& e) { return e.value == value; };
+
+  // An empty range -- no default constructors should be invoked.
+  {
+    Buffer<Counted, 1> buf;
+
+    std::ranges::uninitialized_fill_n(buf.begin(), 0, x);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+  }
+
+  // A range containing several objects.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_fill_n(buf.begin(), N, x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.end(), pred));
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Any existing values should be overwritten by value constructors.
+  {
+    constexpr int N = 5;
+    int buffer[N] = {value, value, value, value, value};
+
+    std::ranges::uninitialized_fill_n(buffer, 1, 0);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == value);
+
+    std::ranges::uninitialized_fill_n(buffer, N, 0);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == 0);
+    assert(buffer[2] == 0);
+    assert(buffer[3] == 0);
+    assert(buffer[4] == 0);
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    Counted::throw_on = 3; // When constructing the fourth object.
+    try {
+      std::ranges::uninitialized_fill_n(buf.begin(), N, x);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 3);
+
+    std::destroy(buf.begin(), buf.begin() + 3);
+    Counted::reset();
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_fill_n(buf.cbegin(), N, x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.end(), pred));
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill.n/uninitialized_fill_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill.n/uninitialized_fill_n.pass.cpp
new file mode 100644
index 0000000..8b46f1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill.n/uninitialized_fill_n.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class ForwardIterator, class Size, class T>
+//   ForwardIterator
+//   uninitialized_fill_n(ForwardIterator first, Size n, const T& x);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count_;
+    static int population_;
+    int data_;
+    explicit B() : data_(1) { ++population_; }
+    B(const B &b) {
+      ++count_;
+      if (count_ == 3)
+        TEST_THROW(1);
+      data_ = b.data_;
+      ++population_;
+    }
+    ~B() {data_ = 0; --population_; }
+};
+
+int B::count_ = 0;
+int B::population_ = 0;
+
+struct Nasty
+{
+    Nasty() : i_ ( counter_++ ) {}
+    Nasty * operator &() const { return nullptr; }
+    int i_;
+    static int counter_;
+};
+
+int Nasty::counter_ = 0;
+
+int main(int, char**)
+{
+    {
+    const int N = 5;
+    char pool[sizeof(B)*N] = {0};
+    B* bp = (B*)pool;
+    assert(B::population_ == 0);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        std::uninitialized_fill_n(bp, 5, B());
+        assert(false);
+    }
+    catch (...)
+    {
+        assert(B::population_ == 0);
+    }
+#endif
+    B::count_ = 0;
+    B* r = std::uninitialized_fill_n(bp, 2, B());
+    assert(r == bp + 2);
+    for (int i = 0; i < 2; ++i)
+        assert(bp[i].data_ == 1);
+    assert(B::population_ == 2);
+    }
+    {
+    {
+    const int N = 5;
+    char pool[N*sizeof(Nasty)] = {0};
+    Nasty* bp = (Nasty*)pool;
+
+    Nasty::counter_ = 23;
+    std::uninitialized_fill_n(bp, N, Nasty());
+    for (int i = 0; i < N; ++i)
+        assert(bp[i].i_ == 23);
+    }
+
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill/ranges_uninitialized_fill.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill/ranges_uninitialized_fill.pass.cpp
new file mode 100644
index 0000000..482515e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill/ranges_uninitialized_fill.pass.cpp
@@ -0,0 +1,231 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// template <nothrow-forward-iterator ForwardIterator, nothrow-sentinel-for<ForwardIterator> Sentinel, class T>
+//   requires constructible_from<iter_value_t<ForwardIterator>, const T&>
+// ForwardIterator ranges::uninitialized_fill(ForwardIterator first, Sentinel last, const T& x);
+//
+// template <nothrow-forward-range ForwardRange, class T>
+//   requires constructible_from<range_value_t<ForwardRange>, const T&>
+// borrowed_iterator_t<ForwardRange> ranges::uninitialized_fill(ForwardRange&& range, const T& x);
+
+#include <algorithm>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_fill)>);
+
+struct NotConvertibleFromInt {};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_fill), NotConvertibleFromInt*,
+                                   NotConvertibleFromInt*, int>);
+
+int main(int, char**) {
+  constexpr int value = 42;
+  Counted x(value);
+  Counted::reset();
+  auto pred = [](const Counted& e) { return e.value == value; };
+
+  // An empty range -- no default constructors should be invoked.
+  {
+    Buffer<Counted, 1> buf;
+
+    std::ranges::uninitialized_fill(buf.begin(), buf.begin(), x);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    std::ranges::uninitialized_fill(std::ranges::empty_view<Counted>(), x);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+
+    forward_iterator<Counted*> it(buf.begin());
+    auto range = std::ranges::subrange(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+    std::ranges::uninitialized_fill(range.begin(), range.end(), x);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+    Counted::reset();
+
+    std::ranges::uninitialized_fill(range, x);
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+    Counted::reset();
+  }
+
+  // A range containing several objects, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_fill(buf.begin(), buf.end(), x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.end(), pred));
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // A range containing several objects, (range) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    auto range = std::ranges::subrange(buf.begin(), buf.end());
+    std::ranges::uninitialized_fill(range, x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.end(), pred));
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Using `counted_iterator`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_fill(std::counted_iterator(buf.begin(), N), std::default_sentinel, x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.begin() + N, pred));
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Using `views::counted`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    std::ranges::uninitialized_fill(std::views::counted(buf.begin(), N), x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.begin() + N, pred));
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Using `reverse_view`.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    auto range = std::ranges::subrange(buf.begin(), buf.begin() + N);
+    std::ranges::uninitialized_fill(std::ranges::reverse_view(range), x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.begin() + N, pred));
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // Any existing values should be overwritten by value constructors.
+  {
+    constexpr int N = 5;
+    int buffer[N] = {value, value, value, value, value};
+
+    std::ranges::uninitialized_fill(buffer, buffer + 1, 0);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == value);
+
+    std::ranges::uninitialized_fill(buffer, buffer + N, 0);
+    assert(buffer[0] == 0);
+    assert(buffer[1] == 0);
+    assert(buffer[2] == 0);
+    assert(buffer[3] == 0);
+    assert(buffer[4] == 0);
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    Counted::throw_on = N; // When constructing the fourth object.
+    try {
+      std::ranges::uninitialized_fill(buf.begin(), buf.end(), x);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (range) overload.
+  {
+    constexpr int N = 3;
+    Buffer<Counted, 5> buf;
+
+    Counted::throw_on = N; // When constructing the fourth object.
+    try {
+      std::ranges::uninitialized_fill(buf, x);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == N);
+
+    std::destroy(buf.begin(), buf.begin() + N);
+    Counted::reset();
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    std::ranges::uninitialized_fill(buf.cbegin(), buf.cend(), x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.end(), pred));
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  // Works with const iterators, (range) overload.
+  {
+    constexpr int N = 5;
+    Buffer<Counted, N> buf;
+
+    auto range = std::ranges::subrange(buf.cbegin(), buf.cend());
+    std::ranges::uninitialized_fill(range, x);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::all_of(buf.begin(), buf.end(), pred));
+
+    std::destroy(buf.begin(), buf.end());
+    Counted::reset();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill/uninitialized_fill.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill/uninitialized_fill.pass.cpp
new file mode 100644
index 0000000..fd6576d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.fill/uninitialized_fill.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class ForwardIterator, class T>
+//   void
+//   uninitialized_fill(ForwardIterator first, ForwardIterator last,
+//                      const T& x);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count_;
+    static int population_;
+    int data_;
+    explicit B() : data_(1) { ++population_; }
+    B(const B &b) {
+      ++count_;
+      if (count_ == 3)
+        TEST_THROW(1);
+      data_ = b.data_;
+      ++population_;
+    }
+    ~B() {data_ = 0; --population_; }
+};
+
+int B::count_ = 0;
+int B::population_ = 0;
+
+struct Nasty
+{
+    Nasty() : i_ ( counter_++ ) {}
+    Nasty * operator &() const { return nullptr; }
+    int i_;
+    static int counter_;
+};
+
+int Nasty::counter_ = 0;
+
+int main(int, char**)
+{
+    {
+    const int N = 5;
+    char pool[sizeof(B)*N] = {0};
+    B* bp = (B*)pool;
+    assert(B::population_ == 0);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        std::uninitialized_fill(bp, bp+N, B());
+        assert(false);
+    }
+    catch (...)
+    {
+        assert(B::population_ == 0);
+    }
+#endif
+    B::count_ = 0;
+    std::uninitialized_fill(bp, bp+2, B());
+    for (int i = 0; i < 2; ++i)
+        assert(bp[i].data_ == 1);
+    assert(B::population_ == 2);
+    }
+    {
+    const int N = 5;
+    char pool[N*sizeof(Nasty)] = {0};
+    Nasty* bp = (Nasty*)pool;
+
+    Nasty::counter_ = 23;
+    std::uninitialized_fill(bp, bp+N, Nasty());
+    for (int i = 0; i < N; ++i)
+        assert(bp[i].i_ == 23);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/ranges_uninitialized_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/ranges_uninitialized_move.pass.cpp
new file mode 100644
index 0000000..57be8c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/ranges_uninitialized_move.pass.cpp
@@ -0,0 +1,439 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// template<input_iterator InputIterator, nothrow-forward-iterator OutputIterator, nothrow-sentinel-for<OutputIterator> Sentinel>
+// requires constructible_from<iter_value_t<OutputIterator>, iter_rvalue_reference_t<InputIterator>>
+// ranges::uninitialized_move_n_result<InputIterator, OutputIterator>
+// ranges::uninitialized_move_n(InputIterator ifirst, iter_difference_t<InputIterator> n, OutputIterator ofirst, Sentinel olast); // since C++20
+
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+#include <utility>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "MoveOnly.h"
+#include "test_macros.h"
+#include "test_iterators.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_move)>);
+
+static_assert(std::is_invocable_v<decltype(std::ranges::uninitialized_move), int*, int*, long*, long*>);
+struct NotConvertibleFromInt {};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_move), int*, int*, NotConvertibleFromInt*,
+                                   NotConvertibleFromInt*>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Counted in[] = {Counted()};
+    Buffer<Counted, 1> out;
+    Counted::reset();
+
+    {
+      auto result = std::ranges::uninitialized_move(in, in, out.begin(), out.end());
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == in);
+      assert(result.out == out.begin());
+    }
+
+    {
+      std::ranges::empty_view<Counted> view;
+      auto result = std::ranges::uninitialized_move(view, out);
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == view.begin());
+      assert(result.out == out.begin());
+    }
+
+    {
+      forward_iterator<Counted*> it(in);
+      std::ranges::subrange range(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+
+      auto result = std::ranges::uninitialized_move(range.begin(), range.end(), out.begin(), out.end());
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == it);
+      assert(result.out == out.begin());
+    }
+
+    {
+      forward_iterator<Counted*> it(in);
+      std::ranges::subrange range(it, sentinel_wrapper<forward_iterator<Counted*>>(it));
+
+      auto result = std::ranges::uninitialized_move(range, out);
+      assert(Counted::current_objects == 0);
+      assert(Counted::total_objects == 0);
+      assert(Counted::total_copies == 0);
+      assert(result.in == it);
+      assert(result.out == out.begin());
+    }
+    Counted::reset();
+  }
+
+  // A range containing several objects, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_move(in, in + N, out.begin(), out.end());
+    ASSERT_SAME_TYPE(decltype(result), std::ranges::uninitialized_move_result<Counted*, Counted*>);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+    assert(result.in == in + N);
+    assert(result.out == out.end());
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // A range containing several objects, (range) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::subrange range(in, in + N);
+    auto result = std::ranges::uninitialized_move(range, out);
+    ASSERT_SAME_TYPE(decltype(result), std::ranges::uninitialized_move_result<Counted*, Counted*>);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    assert(result.in == in + N);
+    assert(result.out == out.end());
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Using `counted_iterator`.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    std::counted_iterator iter(in, N);
+    auto result = std::ranges::uninitialized_move(iter, std::default_sentinel, out.begin(), out.end());
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+    assert(std::equal(in, in + N, out.begin(), out.begin() + N));
+
+    assert(result.in == iter + N);
+    assert(result.out == out.begin() + N);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // Using `views::counted`.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    auto view = std::views::counted(in, N);
+    auto result = std::ranges::uninitialized_move(view, out);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+    assert(std::equal(in, in + N, out.begin(), out.begin() + N));
+
+    assert(result.in == view.begin() + N);
+    assert(result.out == out.begin() + N);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // Using `reverse_view`.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    std::ranges::subrange range(in, in + N);
+    auto view = std::ranges::views::reverse(range);
+    auto result = std::ranges::uninitialized_move(view, out);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+
+    Counted expected[N] = {Counted(3), Counted(2), Counted(1)};
+    assert(std::equal(out.begin(), out.begin() + N, expected, expected + N));
+
+    assert(result.in == view.begin() + N);
+    assert(result.out == out.begin() + N);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // Any existing values should be overwritten by move constructors.
+  {
+    constexpr int N = 5;
+    int in[N] = {1, 2, 3, 4, 5};
+    int out[N] = {6, 7, 8, 9, 10};
+    assert(!std::equal(in, in + N, out, out + N));
+
+    std::ranges::uninitialized_move(in, in + 1, out, out + N);
+    assert(out[0] == 1);
+    assert(out[1] == 7);
+
+    std::ranges::uninitialized_move(in, in + N, out, out + N);
+    assert(std::equal(in, in + N, out, out + N));
+  }
+
+  // An exception is thrown while objects are being created -- check that the objects in the source
+  // range have been moved from. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    Counted::throw_on = N; // When constructing out[3].
+    try {
+      std::ranges::uninitialized_move(in, in + 5, out.begin(), out.end());
+      assert(false);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+
+    assert(std::all_of(in, in + 1, [](const auto& e) { return e.moved_from; }));
+    assert(std::none_of(in + N, in + 5, [](const auto& e) { return e.moved_from; }));
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+  // An exception is thrown while objects are being created -- check that the objects in the source
+  // range have been moved from. (range) overload.
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    Counted::throw_on = N; // When constructing out[3].
+    try {
+      std::ranges::uninitialized_move(in, out);
+      assert(false);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+
+    assert(std::all_of(in, in + 1, [](const auto& e) { return e.moved_from; }));
+    assert(std::none_of(in + N, in + 5, [](const auto& e) { return e.moved_from; }));
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators, (iter, sentinel) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::uninitialized_move(in, in + N, out.cbegin(), out.cend());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Works with const iterators, (range) overload.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::subrange out_range (out.cbegin(), out.cend());
+    std::ranges::uninitialized_move(in, out_range);
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Conversions, (iter, sentinel) overload.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<double, N> out;
+
+    std::ranges::uninitialized_move(in, in + N, out.begin(), out.end());
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+  }
+
+  // Conversions, (range) overload.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<double, N> out;
+
+    std::ranges::uninitialized_move(in, out);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+  }
+
+  // Destination range is shorter than the source range, (iter, sentinel) overload.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, M> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_move(in, in + N, out.begin(), out.end());
+    assert(Counted::current_objects == M);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_moves == M);
+    assert(Counted::total_copies == 0);
+
+    assert(std::equal(in, in + M, out.begin(), out.end()));
+    assert(result.in == in + M);
+    assert(result.out == out.end());
+  }
+
+  // Destination range is shorter than the source range, (range) overload.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, M> out;
+    Counted::reset();
+
+    std::ranges::subrange range(in, in + N);
+    auto result = std::ranges::uninitialized_move(range, out);
+    assert(Counted::current_objects == M);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_moves == M);
+    assert(Counted::total_copies == 0);
+
+    assert(std::equal(in, in + M, out.begin(), out.end()));
+    assert(result.in == in + M);
+    assert(result.out == out.end());
+  }
+
+  // Ensure the `iter_move` customization point is being used.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<int, N> out;
+    int iter_moves = 0;
+    adl::Iterator begin = adl::Iterator::TrackMoves(in, iter_moves);
+    adl::Iterator end = adl::Iterator::TrackMoves(in + N, iter_moves);
+
+    std::ranges::uninitialized_move(begin, end, out.begin(), out.end());
+    assert(iter_moves == 3);
+    iter_moves = 0;
+
+    std::ranges::subrange range(begin, end);
+    std::ranges::uninitialized_move(range, out);
+    assert(iter_moves == 3);
+    iter_moves = 0;
+  }
+
+  // Move-only iterators are supported.
+  {
+    using MoveOnlyIter = cpp20_input_iterator<const int*>;
+    static_assert(!std::is_copy_constructible_v<MoveOnlyIter>);
+
+    constexpr int N = 3;
+    struct MoveOnlyRange {
+      int buffer[N] = {1, 2, 3};
+      auto begin() const { return MoveOnlyIter(buffer); }
+      auto end() const { return sentinel_wrapper<MoveOnlyIter>(MoveOnlyIter(buffer)); }
+    };
+    static_assert(std::ranges::input_range<MoveOnlyRange>);
+    MoveOnlyRange in;
+
+    // (iter, sentinel) overload.
+    {
+      Buffer<int, N> out;
+      std::ranges::uninitialized_move(in.begin(), in.end(), out.begin(), out.end());
+    }
+
+    // (range) overload.
+    {
+      Buffer<int, N> out;
+      std::ranges::uninitialized_move(in, out);
+    }
+  }
+
+  // MoveOnly types are supported
+  {
+    {
+      MoveOnly a[] = {1, 2, 3, 4};
+      Buffer<MoveOnly, 4> out;
+      std::ranges::uninitialized_move(std::begin(a), std::end(a), std::begin(out), std::end(out));
+      assert(std::ranges::equal(out, std::array<MoveOnly, 4>{1, 2, 3, 4}));
+    }
+    {
+      MoveOnly a[] = {1, 2, 3, 4};
+      Buffer<MoveOnly, 4> out;
+      std::ranges::uninitialized_move(a, out);
+      assert(std::ranges::equal(out, std::array<MoveOnly, 4>{1, 2, 3, 4}));
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/ranges_uninitialized_move_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/ranges_uninitialized_move_n.pass.cpp
new file mode 100644
index 0000000..09bdcf4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/ranges_uninitialized_move_n.pass.cpp
@@ -0,0 +1,195 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+//
+// template<input_iterator I, nothrow-forward-iterator O, nothrow-sentinel-for<O> S>
+//   requires constructible_from<iter_value_t<O>, iter_reference_t<I>>
+// uninitialized_copy_n_result<I, O> uninitialized_copy_n(I ifirst, iter_difference_t<I> n, O ofirst, S olast); // since C++20
+
+#include <algorithm>
+#include <array>
+#include <cassert>
+#include <iterator>
+#include <memory>
+#include <ranges>
+#include <type_traits>
+
+#include "../buffer.h"
+#include "../counted.h"
+#include "MoveOnly.h"
+#include "test_iterators.h"
+#include "test_macros.h"
+
+// TODO(varconst): consolidate the ADL checks into a single file.
+// Because this is a variable and not a function, it's guaranteed that ADL won't be used. However,
+// implementations are allowed to use a different mechanism to achieve this effect, so this check is
+// libc++-specific.
+LIBCPP_STATIC_ASSERT(std::is_class_v<decltype(std::ranges::uninitialized_move_n)>);
+
+static_assert(std::is_invocable_v<decltype(std::ranges::uninitialized_move_n), int*, size_t, long*, long*>);
+struct NotConvertibleFromInt {};
+static_assert(!std::is_invocable_v<decltype(std::ranges::uninitialized_move_n), int*, size_t, NotConvertibleFromInt*,
+                                   NotConvertibleFromInt*>);
+
+int main(int, char**) {
+  // An empty range -- no default constructors should be invoked.
+  {
+    Counted in[] = {Counted()};
+    Buffer<Counted, 1> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_move_n(in, 0, out.begin(), out.end());
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == 0);
+    assert(Counted::total_copies == 0);
+    assert(result.in == in);
+    assert(result.out == out.begin());
+  }
+  Counted::reset();
+
+  // A range containing several objects.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_move_n(in, N, out.begin(), out.end());
+    ASSERT_SAME_TYPE(decltype(result), std::ranges::uninitialized_move_n_result<Counted*, Counted*>);
+
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+    assert(result.in == in + N);
+    assert(result.out == out.end());
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // An exception is thrown while objects are being created -- the existing objects should stay
+  // valid. (iterator, sentinel) overload.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    constexpr int N = 3;
+    Counted in[] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, 5> out;
+    Counted::reset();
+
+    Counted::throw_on = N; // When constructing out[3].
+    try {
+      std::ranges::uninitialized_move_n(in, 5, out.begin(), out.end());
+      assert(false);
+    } catch (...) {
+    }
+    assert(Counted::current_objects == 0);
+    assert(Counted::total_objects == N);
+    assert(Counted::total_moves == N);
+    assert(Counted::total_copies == 0);
+
+    std::destroy(out.begin(), out.begin() + N);
+  }
+  Counted::reset();
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Works with const iterators.
+  {
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, N> out;
+    Counted::reset();
+
+    std::ranges::uninitialized_move_n(in, N, out.cbegin(), out.cend());
+    assert(Counted::current_objects == N);
+    assert(Counted::total_objects == N);
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+
+    std::destroy(out.begin(), out.end());
+  }
+  Counted::reset();
+
+  // Conversions.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<double, N> out;
+
+    std::ranges::uninitialized_move_n(in, N, out.begin(), out.end());
+    assert(std::equal(in, in + N, out.begin(), out.end()));
+  }
+
+  // Destination range is shorter than the source range.
+  {
+    constexpr int M = 3;
+    constexpr int N = 5;
+    Counted in[N] = {Counted(1), Counted(2), Counted(3), Counted(4), Counted(5)};
+    Buffer<Counted, M> out;
+    Counted::reset();
+
+    auto result = std::ranges::uninitialized_move_n(in, N, out.begin(), out.end());
+    assert(Counted::current_objects == M);
+    assert(Counted::total_objects == M);
+    assert(Counted::total_moves == M);
+    assert(Counted::total_copies == 0);
+
+    assert(std::equal(in, in + M, out.begin(), out.end()));
+    assert(result.in == in + M);
+    assert(result.out == out.end());
+  }
+
+  // Ensure the `iter_move` customization point is being used.
+  {
+    constexpr int N = 3;
+    int in[N] = {1, 2, 3};
+    Buffer<int, N> out;
+    int iter_moves = 0;
+    adl::Iterator begin = adl::Iterator::TrackMoves(in, iter_moves);
+    adl::Iterator end = adl::Iterator::TrackMoves(in + N, iter_moves);
+
+    std::ranges::uninitialized_move(begin, end, out.begin(), out.end());
+    assert(iter_moves == 3);
+    iter_moves = 0;
+
+    std::ranges::subrange range(begin, end);
+    std::ranges::uninitialized_move(range, out);
+    assert(iter_moves == 3);
+    iter_moves = 0;
+  }
+
+  // Move-only iterators are supported.
+  {
+    using MoveOnlyIter = cpp20_input_iterator<const int*>;
+    static_assert(!std::is_copy_constructible_v<MoveOnlyIter>);
+
+    constexpr int N = 3;
+    int buffer[N] = {1, 2, 3};
+
+    MoveOnlyIter in(buffer);
+    Buffer<int, N> out;
+    std::ranges::uninitialized_move_n(std::move(in), N, out.begin(), out.end());
+  }
+
+  // MoveOnly types are supported
+  {
+    {
+      MoveOnly a[] = {1, 2, 3, 4};
+      Buffer<MoveOnly, 4> out;
+      std::ranges::uninitialized_move_n(std::begin(a), std::size(a), std::begin(out), std::end(out));
+      assert(std::ranges::equal(out, std::array<MoveOnly, 4>{1, 2, 3, 4}));
+    }
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/uninitialized_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/uninitialized_move.pass.cpp
new file mode 100644
index 0000000..625d30f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/uninitialized_move.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class InputIt, class ForwardIt>
+// ForwardIt uninitialized_move(InputIt, InputIt, ForwardIt);
+
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+  static int count;
+  static int constructed;
+  static void reset() { count = constructed =  0; }
+  explicit Counted(int&& x) : value(x) { x = 0; ++count; ++constructed; }
+  Counted(Counted const&) { assert(false); }
+  ~Counted() { assert(count > 0); --count; }
+  friend void operator&(Counted) = delete;
+  int value;
+};
+int Counted::count = 0;
+int Counted::constructed = 0;
+
+struct ThrowsCounted {
+  static int count;
+  static int constructed;
+  static int throw_after;
+  static void reset() { throw_after = count = constructed =  0; }
+  explicit ThrowsCounted(int&& x) {
+      ++constructed;
+      if (throw_after > 0 && --throw_after == 0) {
+          TEST_THROW(1);
+      }
+      ++count;
+      x = 0;
+  }
+  ThrowsCounted(ThrowsCounted const&) { assert(false); }
+  ~ThrowsCounted() { assert(count > 0); --count; }
+  friend void operator&(ThrowsCounted) = delete;
+};
+int ThrowsCounted::count = 0;
+int ThrowsCounted::constructed = 0;
+int ThrowsCounted::throw_after = 0;
+
+void test_ctor_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using It = forward_iterator<ThrowsCounted*>;
+    const int N = 5;
+    int values[N] = {1, 2, 3, 4, 5};
+    alignas(ThrowsCounted) char pool[sizeof(ThrowsCounted)*N] = {};
+    ThrowsCounted* p = (ThrowsCounted*)pool;
+    try {
+        ThrowsCounted::throw_after = 4;
+        std::uninitialized_move(values, values + N, It(p));
+        assert(false);
+    } catch (...) {}
+    assert(ThrowsCounted::count == 0);
+    assert(ThrowsCounted::constructed == 4); // forth construction throws
+    assert(values[0] == 0);
+    assert(values[1] == 0);
+    assert(values[2] == 0);
+    assert(values[3] == 4);
+    assert(values[4] == 5);
+#endif
+}
+
+void test_counted()
+{
+    using It = cpp17_input_iterator<int*>;
+    using FIt = forward_iterator<Counted*>;
+    const int N = 5;
+    int values[N] = {1, 2, 3, 4, 5};
+    alignas(Counted) char pool[sizeof(Counted)*N] = {};
+    Counted* p = (Counted*)pool;
+    auto ret = std::uninitialized_move(It(values), It(values + 1), FIt(p));
+    assert(ret == FIt(p +1));
+    assert(Counted::constructed == 1);
+    assert(Counted::count == 1);
+    assert(p[0].value == 1);
+    assert(values[0] == 0);
+    ret = std::uninitialized_move(It(values+1), It(values+N), FIt(p+1));
+    assert(ret == FIt(p + N));
+    assert(Counted::count == 5);
+    assert(Counted::constructed == 5);
+    assert(p[1].value == 2);
+    assert(p[2].value == 3);
+    assert(p[3].value == 4);
+    assert(p[4].value == 5);
+    assert(values[1] == 0);
+    assert(values[2] == 0);
+    assert(values[3] == 0);
+    assert(values[4] == 0);
+    std::destroy(p, p+N);
+    assert(Counted::count == 0);
+}
+
+int main(int, char**) {
+    test_counted();
+    test_ctor_throws();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/uninitialized_move_n.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/uninitialized_move_n.pass.cpp
new file mode 100644
index 0000000..7dcdcf0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/specialized.algorithms/uninitialized.move/uninitialized_move_n.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// template <class InputIt, class Size, class ForwardIt>
+// pair<InputIt, ForwardIt> uninitialized_move_n(InputIt, Size, ForwardIt);
+
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_iterators.h"
+
+struct Counted {
+  static int count;
+  static int constructed;
+  static void reset() { count = constructed =  0; }
+  explicit Counted(int&& x) : value(x) { x = 0; ++count; ++constructed; }
+  Counted(Counted const&) { assert(false); }
+  ~Counted() { assert(count > 0); --count; }
+  friend void operator&(Counted) = delete;
+  int value;
+};
+int Counted::count = 0;
+int Counted::constructed = 0;
+
+struct ThrowsCounted {
+  static int count;
+  static int constructed;
+  static int throw_after;
+  static void reset() { throw_after = count = constructed =  0; }
+  explicit ThrowsCounted(int&& x) {
+      ++constructed;
+      if (throw_after > 0 && --throw_after == 0) {
+        TEST_THROW(1);
+      }
+      ++count;
+      x = 0;
+  }
+  ThrowsCounted(ThrowsCounted const&) { assert(false); }
+  ~ThrowsCounted() { assert(count > 0); --count; }
+  friend void operator&(ThrowsCounted) = delete;
+};
+int ThrowsCounted::count = 0;
+int ThrowsCounted::constructed = 0;
+int ThrowsCounted::throw_after = 0;
+
+void test_ctor_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using It = forward_iterator<ThrowsCounted*>;
+    const int N = 5;
+    int values[N] = {1, 2, 3, 4, 5};
+    alignas(ThrowsCounted) char pool[sizeof(ThrowsCounted)*N] = {};
+    ThrowsCounted* p = (ThrowsCounted*)pool;
+    try {
+        ThrowsCounted::throw_after = 4;
+        std::uninitialized_move_n(values, N, It(p));
+        assert(false);
+    } catch (...) {}
+    assert(ThrowsCounted::count == 0);
+    assert(ThrowsCounted::constructed == 4); // forth construction throws
+    assert(values[0] == 0);
+    assert(values[1] == 0);
+    assert(values[2] == 0);
+    assert(values[3] == 4);
+    assert(values[4] == 5);
+#endif
+}
+
+void test_counted()
+{
+    using It = cpp17_input_iterator<int*>;
+    using FIt = forward_iterator<Counted*>;
+    const int N = 5;
+    int values[N] = {1, 2, 3, 4, 5};
+    alignas(Counted) char pool[sizeof(Counted)*N] = {};
+    Counted* p = (Counted*)pool;
+    auto ret = std::uninitialized_move_n(It(values), 1, FIt(p));
+    assert(ret.first == It(values +1));
+    assert(ret.second == FIt(p +1));
+    assert(Counted::constructed == 1);
+    assert(Counted::count == 1);
+    assert(p[0].value == 1);
+    assert(values[0] == 0);
+    ret = std::uninitialized_move_n(It(values+1), N-1, FIt(p+1));
+    assert(ret.first == It(values+N));
+    assert(ret.second == FIt(p + N));
+    assert(Counted::count == 5);
+    assert(Counted::constructed == 5);
+    assert(p[1].value == 2);
+    assert(p[2].value == 3);
+    assert(p[3].value == 4);
+    assert(p[4].value == 5);
+    assert(values[1] == 0);
+    assert(values[2] == 0);
+    assert(values[3] == 0);
+    assert(values[4] == 0);
+    std::destroy(p, p+N);
+    assert(Counted::count == 0);
+}
+
+int main(int, char**)
+{
+    test_counted();
+    test_ctor_throws();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/deprecated.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/deprecated.verify.cpp
new file mode 100644
index 0000000..3ad3cf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/deprecated.verify.cpp
@@ -0,0 +1,17 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR
+
+// std::raw_storage_iterator
+
+#include <memory>
+
+std::raw_storage_iterator<int*, int> it(nullptr);
+// expected-warning@-1{{'raw_storage_iterator<int *, int>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/raw_storage_iterator.base.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/raw_storage_iterator.base.pass.cpp
new file mode 100644
index 0000000..8d7c9d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/raw_storage_iterator.base.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// raw_storage_iterator
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int A_constructed = 0;
+
+struct A
+{
+    int data_;
+public:
+    explicit A(int i) : data_(i) {++A_constructed;}
+
+    A(const A& a) : data_(a.data_)  {++A_constructed;}
+    ~A() {--A_constructed; data_ = 0;}
+
+    bool operator==(int i) const {return data_ == i;}
+    A* operator& () = delete;
+};
+
+int main(int, char**)
+{
+    typedef std::aligned_storage<3*sizeof(A), std::alignment_of<A>::value>::type
+            Storage;
+    Storage buffer;
+    std::raw_storage_iterator<A*, A> it((A*)&buffer);
+    assert(A_constructed == 0);
+    assert(it.base() == (A*)&buffer);
+    for (int i = 0; i < 3; ++i)
+    {
+        *it++ = A(i+1);
+        A* ap = (A*)&buffer + i;
+        assert(*ap == i+1);
+        assert(A_constructed == i+1);
+        assert(it.base() == ap + 1);  // next place to write
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/raw_storage_iterator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/raw_storage_iterator.pass.cpp
new file mode 100644
index 0000000..23c8c64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/raw_storage_iterator.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// raw_storage_iterator
+
+#include <cassert>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include <MoveOnly.h>
+
+int A_constructed = 0;
+
+struct A
+{
+    int data_;
+public:
+    explicit A(int i) : data_(i) {++A_constructed;}
+
+    A(const A& a) : data_(a.data_)  {++A_constructed;}
+    ~A() {--A_constructed; data_ = 0;}
+
+    bool operator==(int i) const {return data_ == i;}
+    A* operator& () = delete;
+};
+
+int main(int, char**)
+{
+    {
+    typedef A S;
+    typedef std::aligned_storage<3*sizeof(S), std::alignment_of<S>::value>::type
+            Storage;
+    Storage buffer;
+    std::raw_storage_iterator<S*, S> it((S*)&buffer);
+    assert(A_constructed == 0);
+    for (int i = 0; i < 3; ++i)
+    {
+        *it++ = S(i+1);
+        S* ap = (S*)&buffer + i;
+        assert(*ap == i+1);
+        assert(A_constructed == i+1);
+    }
+    }
+#if TEST_STD_VER >= 14
+    {
+    typedef MoveOnly S;
+    typedef std::aligned_storage<3*sizeof(S), std::alignment_of<S>::value>::type
+            Storage;
+    Storage buffer;
+    std::raw_storage_iterator<S*, S> it((S*)&buffer);
+    S m{1};
+    *it++ = std::move(m);
+    assert(m.get() == 0); // moved from
+    S *ap = (S*) &buffer;
+    assert(ap->get() == 1); // original value
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/types.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/types.compile.pass.cpp
new file mode 100644
index 0000000..d11ab1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/storage.iterator/types.compile.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// raw_storage_iterator associated types
+
+#include <cstddef>
+#include <iterator>
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct T;
+typedef T* OutputIt;
+typedef std::raw_storage_iterator<OutputIt, T> It;
+
+static_assert(std::is_same<It::iterator_category, std::output_iterator_tag>::value, "");
+static_assert(std::is_same<It::value_type, void>::value, "");
+#if TEST_STD_VER > 17
+static_assert(std::is_same<It::difference_type, std::ptrdiff_t>::value, "");
+#else
+static_assert(std::is_same<It::difference_type, void>::value, "");
+#endif
+static_assert(std::is_same<It::pointer, void>::value, "");
+static_assert(std::is_same<It::reference, void>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/depr.verify.cpp
new file mode 100644
index 0000000..040c223
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/depr.verify.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++17
+
+// Ensure allocator<void> is deprecated
+
+#include <memory>
+
+void test() {
+  auto a = std::get_temporary_buffer<int>(1); // expected-warning {{'get_temporary_buffer<int>' is deprecated}}
+  std::return_temporary_buffer(a.first); // expected-warning {{'return_temporary_buffer<int>' is deprecated}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp
new file mode 100644
index 0000000..a4f534e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/overaligned.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Aligned allocations are not supported on macOS < 10.13
+// Note: use 'unsupported' instead of 'xfail' to ensure
+// we won't pass prior to c++17.
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <memory>
+
+// template <class T>
+//   pair<T*, ptrdiff_t>
+//   get_temporary_buffer(ptrdiff_t n);
+//
+// template <class T>
+//   void
+//   return_temporary_buffer(T* p);
+
+#include <cassert>
+#include <cstdint>
+#include <memory>
+#include <utility>
+
+#include "test_macros.h"
+
+struct alignas(32) A {
+    int field;
+};
+
+int main(int, char**)
+{
+    std::pair<A*, std::ptrdiff_t> ip = std::get_temporary_buffer<A>(5);
+    assert(!(ip.first == nullptr) ^ (ip.second == 0));
+    assert(reinterpret_cast<uintptr_t>(ip.first) % alignof(A) == 0);
+    std::return_temporary_buffer(ip.first);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp
new file mode 100644
index 0000000..6c0fbf2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/temporary.buffer/temporary_buffer.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// template <class T>
+//   pair<T*, ptrdiff_t>
+//   get_temporary_buffer(ptrdiff_t n);
+//
+// template <class T>
+//   void
+//   return_temporary_buffer(T* p);
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::pair<int*, std::ptrdiff_t> ip = std::get_temporary_buffer<int>(5);
+    assert(ip.first);
+    assert(ip.second == 5);
+    std::return_temporary_buffer(ip.first);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..55b7b50
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// unique_ptr
+
+#include <memory>
+
+#include <iterator>
+
+static_assert(std::indirectly_readable<std::unique_ptr<int> >);
+static_assert(std::indirectly_writable<std::unique_ptr<int>, int>);
+static_assert(!std::weakly_incrementable<std::unique_ptr<int> >);
+static_assert(std::indirectly_movable<std::unique_ptr<int>, std::unique_ptr<int>>);
+static_assert(std::indirectly_movable_storable<std::unique_ptr<int>, std::unique_ptr<int>>);
+static_assert(std::indirectly_copyable<std::unique_ptr<int>, std::unique_ptr<int>>);
+static_assert(std::indirectly_copyable_storable<std::unique_ptr<int>, std::unique_ptr<int>>);
+static_assert(std::indirectly_swappable<std::unique_ptr<int>, std::unique_ptr<int> >);
+
+static_assert(!std::indirectly_readable<std::unique_ptr<void> >);
+static_assert(!std::indirectly_writable<std::unique_ptr<void>, void>);
+static_assert(!std::weakly_incrementable<std::unique_ptr<void> >);
+static_assert(!std::indirectly_movable<std::unique_ptr<void>, std::unique_ptr<void>>);
+static_assert(!std::indirectly_movable_storable<std::unique_ptr<void>, std::unique_ptr<void>>);
+static_assert(!std::indirectly_copyable<std::unique_ptr<void>, std::unique_ptr<void>>);
+static_assert(!std::indirectly_copyable_storable<std::unique_ptr<void>, std::unique_ptr<void>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/unique.ptr.special/io.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/unique.ptr.special/io.fail.cpp
new file mode 100644
index 0000000..12c9f20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/unique.ptr.special/io.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Because we don't have a functioning decltype in C++03
+// UNSUPPORTED: c++03
+
+// UNSUPPORTED: no-localization
+
+// <memory>
+
+// unique_ptr
+
+// template<class CharT, class Traits, class Y, class D>
+//   basic_ostream<CharT, Traits>&
+//   operator<<(basic_ostream<CharT, Traits>& os, const unique_ptr<Y, D>& p);
+
+//   -?- Remarks: This function shall not participate in overload resolution unless os << p.get() is a valid expression.
+
+#include <memory>
+#include <sstream>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "deleter_types.h"
+
+int main(int, char**)
+{
+    std::unique_ptr<int, PointerDeleter<int>> p;
+    std::ostringstream os;
+    os << p; // expected-error {{invalid operands to binary expression}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/unique.ptr.special/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/unique.ptr.special/io.pass.cpp
new file mode 100644
index 0000000..68c9a27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/unique.ptr/unique.ptr.special/io.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+//  Because we don't have a functioning decltype in C++03
+
+// UNSUPPORTED: no-localization
+
+// <memory>
+
+// unique_ptr
+
+// template<class CharT, class Traits, class Y, class D>
+//   basic_ostream<CharT, Traits>&
+//   operator<<(basic_ostream<CharT, Traits>& os, const unique_ptr<Y, D>& p);
+
+#include <memory>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::unique_ptr<int> p(new int(3));
+    std::ostringstream os;
+    assert(os.str().empty());
+    os << p;
+    assert(!os.str().empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.enab/enable_shared_from_this.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.enab/enable_shared_from_this.pass.cpp
new file mode 100644
index 0000000..d6b4508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.enab/enable_shared_from_this.pass.cpp
@@ -0,0 +1,173 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template<class T>
+// class enable_shared_from_this
+// {
+// protected:
+//     enable_shared_from_this();
+//     enable_shared_from_this(enable_shared_from_this const&);
+//     enable_shared_from_this& operator=(enable_shared_from_this const&);
+//     ~enable_shared_from_this();
+// public:
+//     shared_ptr<T> shared_from_this();
+//     shared_ptr<T const> shared_from_this() const;
+//     weak_ptr<T> weak_from_this() noexcept;                         // C++17
+//     weak_ptr<T const> weak_from_this() const noexecpt;             // C++17
+// };
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+struct T
+    : public std::enable_shared_from_this<T>
+{
+};
+
+struct Y : T {};
+
+struct Z : Y {};
+
+void nullDeleter(void*) {}
+
+struct Foo : virtual public std::enable_shared_from_this<Foo>
+{
+    virtual ~Foo() {}
+};
+
+struct Bar : public Foo {
+    Bar(int) {}
+};
+
+
+struct PrivateBase : private std::enable_shared_from_this<PrivateBase> {
+};
+
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    {  // https://llvm.org/PR18843
+    std::shared_ptr<T const> t1(new T);
+    std::shared_ptr<T const> t2(std::make_shared<T>());
+    }
+    { // https://llvm.org/PR27115
+    int x = 42;
+    std::shared_ptr<Bar> t1(new Bar(42));
+    assert(t1->shared_from_this() == t1);
+    std::shared_ptr<Bar> t2(std::make_shared<Bar>(x));
+    assert(t2->shared_from_this() == t2);
+    }
+    {
+    std::shared_ptr<Y> p(new Z);
+    std::shared_ptr<T> q = p->shared_from_this();
+    assert(p == q);
+    assert(!p.owner_before(q) && !q.owner_before(p)); // p and q share ownership
+    }
+    {
+    std::shared_ptr<Y> p = std::make_shared<Z>();
+    std::shared_ptr<T> q = p->shared_from_this();
+    assert(p == q);
+    assert(!p.owner_before(q) && !q.owner_before(p)); // p and q share ownership
+    }
+    {
+      typedef std::shared_ptr<PrivateBase> APtr;
+      APtr a1 = std::make_shared<PrivateBase>();
+      assert(a1.use_count() == 1);
+    }
+    // Test LWG issue 2529. Only reset '__weak_ptr_' when it's already expired.
+    // https://cplusplus.github.io/LWG/lwg-defects.html#2529
+    // Test two different ways:
+    // * Using 'weak_from_this().expired()' in C++17.
+    // * Using 'shared_from_this()' in all dialects.
+    {
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        T* ptr = new T;
+        std::shared_ptr<T> s(ptr);
+        {
+            // Don't re-initialize the "enable_shared_from_this" base
+            // because it already references a non-expired shared_ptr.
+            std::shared_ptr<T> s2(ptr, &nullDeleter);
+        }
+#if TEST_STD_VER > 14
+        // The enable_shared_from_this base should still be referencing
+        // the original shared_ptr.
+        assert(!ptr->weak_from_this().expired());
+#endif
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        {
+            try {
+                std::shared_ptr<T> new_s = ptr->shared_from_this();
+                assert(new_s == s);
+            } catch (std::bad_weak_ptr const&) {
+                assert(false);
+            } catch (...) {
+                assert(false);
+            }
+        }
+#endif
+        s.reset();
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+    }
+    // Test LWG issue 2529 again. This time check that an expired pointer
+    // is replaced.
+    {
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+        T* ptr = new T;
+        std::weak_ptr<T> weak;
+        {
+            std::shared_ptr<T> s(ptr, &nullDeleter);
+            assert(ptr->shared_from_this() == s);
+            weak = s;
+            assert(!weak.expired());
+        }
+        assert(weak.expired());
+        weak.reset();
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+        try {
+            TEST_IGNORE_NODISCARD ptr->shared_from_this();
+            assert(false);
+        } catch (std::bad_weak_ptr const&) {
+        } catch (...) { assert(false); }
+#endif
+        {
+            std::shared_ptr<T> s2(ptr, &nullDeleter);
+            assert(ptr->shared_from_this() == s2);
+        }
+        delete ptr;
+        assert(globalMemCounter.checkOutstandingNewEq(0));
+    }
+    // Test weak_from_this_methods
+#if TEST_STD_VER > 14
+    {
+        T* ptr = new T;
+        const T* cptr = ptr;
+
+        static_assert(noexcept(ptr->weak_from_this()), "Operation must be noexcept");
+        static_assert(noexcept(cptr->weak_from_this()), "Operation must be noexcept");
+
+        std::weak_ptr<T> my_weak = ptr->weak_from_this();
+        assert(my_weak.expired());
+
+        std::weak_ptr<T const> my_const_weak = cptr->weak_from_this();
+        assert(my_const_weak.expired());
+
+        // Enable shared_from_this with ptr.
+        std::shared_ptr<T> sptr(ptr);
+        my_weak = ptr->weak_from_this();
+        assert(!my_weak.expired());
+        assert(my_weak.lock().get() == ptr);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/enabled_hash.pass.cpp
new file mode 100644
index 0000000..08cbb58
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/enabled_hash.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// Test that <memory> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <memory>
+
+#include <functional>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/hash_shared_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/hash_shared_ptr.pass.cpp
new file mode 100644
index 0000000..0c3915b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/hash_shared_ptr.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T>
+// struct hash<shared_ptr<T>>
+// {
+//     typedef shared_ptr<T>    argument_type;
+//     typedef size_t           result_type;
+//     size_t operator()(const shared_ptr<T>& p) const;
+// };
+
+#include <memory>
+
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+#include "poisoned_hash_helper.h"
+
+struct A {};
+#endif
+
+int main(int, char**)
+{
+  {
+    int* ptr = new int;
+    std::shared_ptr<int> p(ptr);
+    std::hash<std::shared_ptr<int> > f;
+    std::size_t h = f(p);
+    assert(h == std::hash<int*>()(ptr));
+  }
+#if TEST_STD_VER >= 11
+  {
+    test_hash_enabled_for_type<std::shared_ptr<int>>();
+    test_hash_enabled_for_type<std::shared_ptr<A>>();
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/hash_unique_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/hash_unique_ptr.pass.cpp
new file mode 100644
index 0000000..fc1500f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.hash/hash_unique_ptr.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T, class D>
+// struct hash<unique_ptr<T, D>>
+// {
+//     typedef unique_ptr<T, D> argument_type;
+//     typedef size_t           result_type;
+//     size_t operator()(const unique_ptr<T, D>& p) const;
+// };
+
+#include <memory>
+
+#include <cassert>
+#include <functional>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+#include "poisoned_hash_helper.h"
+#include "deleter_types.h"
+#include "min_allocator.h"
+
+template <class ValueT, class Del>
+void test_enabled_with_deleter() {
+  using UPtr = std::unique_ptr<ValueT, Del>;
+  using pointer = typename UPtr::pointer;
+  using RawDel = typename std::decay<Del>::type;
+  RawDel d(1);
+  UPtr p(nullptr, std::forward<Del>(d));
+  test_hash_enabled_for_type<UPtr>(p);
+  test_hash_enabled_for_type<pointer>();
+}
+
+template <class ValueT, class Del>
+void test_disabled_with_deleter() {
+  using UPtr = std::unique_ptr<ValueT, Del>;
+  using pointer = typename UPtr::pointer;
+  test_hash_disabled_for_type<UPtr>();
+  test_hash_disabled_for_type<pointer>();
+}
+
+template <class T>
+struct std::hash<min_pointer<T, std::integral_constant<size_t, 1>>> {
+  size_t operator()(min_pointer<T, std::integral_constant<size_t, 1>> p) const TEST_NOEXCEPT_FALSE {
+    if (!p) return 0;
+    return std::hash<T*>{}(std::addressof(*p));
+  }
+};
+
+struct A {};
+
+#endif // TEST_STD_VER >= 11
+
+int main(int, char**)
+{
+  {
+    int* ptr = new int;
+    std::unique_ptr<int> p(ptr);
+    std::hash<std::unique_ptr<int> > f;
+    std::size_t h = f(p);
+    assert(h == std::hash<int*>()(ptr));
+  }
+#if TEST_STD_VER >= 11
+  {
+    std::unique_ptr<int, PointerDeleter<int, 1>> pThrowingHash;
+    std::hash<std::unique_ptr<int, PointerDeleter<int, 1>>> fThrowingHash;
+    ASSERT_NOT_NOEXCEPT(fThrowingHash(pThrowingHash));
+  }
+  {
+    test_enabled_with_deleter<int, Deleter<int>>();
+    test_enabled_with_deleter<int[], Deleter<int[]>>();
+    test_enabled_with_deleter<int, CopyDeleter<int>>();
+    test_enabled_with_deleter<int, CopyDeleter<int[]>>();
+    test_enabled_with_deleter<int, NCDeleter<int>&>();
+    test_enabled_with_deleter<int[], NCDeleter<int[]>&>();
+    test_enabled_with_deleter<int, NCConstDeleter<int> const&>();
+    test_enabled_with_deleter<int[], NCConstDeleter<int[]> const&>();
+  }
+  {
+    test_enabled_with_deleter<int, PointerDeleter<int, 1>>();
+    test_enabled_with_deleter<int[], PointerDeleter<int[], 1>>();
+    test_enabled_with_deleter<A, PointerDeleter<A, 1>>();
+    test_enabled_with_deleter<A[], PointerDeleter<A[], 1>>();
+
+#if TEST_STD_VER > 14
+    test_disabled_with_deleter<int, PointerDeleter<int, 0>>();
+    test_disabled_with_deleter<int[], PointerDeleter<int[], 0>>();
+    test_disabled_with_deleter<A, PointerDeleter<A, 0>>();
+    test_disabled_with_deleter<A[], PointerDeleter<A[], 0>>();
+#endif
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong.pass.cpp
new file mode 100644
index 0000000..37be6ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// bool
+// atomic_compare_exchange_strong(shared_ptr<T>* p, shared_ptr<T>* v,
+//                                shared_ptr<T> w);
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v(new int(3));
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_strong(&p, &v, w);
+        assert(b == false);
+        assert(*p == 4);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v = p;
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_strong(&p, &v, w);
+        assert(b == true);
+        assert(*p == 2);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong_explicit.pass.cpp
new file mode 100644
index 0000000..3965863
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_strong_explicit.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// bool
+// atomic_compare_exchange_strong_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
+//                                         shared_ptr<T> w, memory_order success,
+//                                         memory_order failure);
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v(new int(3));
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w,
+                                                              std::memory_order_seq_cst,
+                                                              std::memory_order_seq_cst);
+        assert(b == false);
+        assert(*p == 4);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v = p;
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_strong_explicit(&p, &v, w,
+                                                              std::memory_order_seq_cst,
+                                                              std::memory_order_seq_cst);
+        assert(b == true);
+        assert(*p == 2);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak.pass.cpp
new file mode 100644
index 0000000..6dd04f9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// bool
+// atomic_compare_exchange_weak(shared_ptr<T>* p, shared_ptr<T>* v,
+//                              shared_ptr<T> w);
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v(new int(3));
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_weak(&p, &v, w);
+        assert(b == false);
+        assert(*p == 4);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v = p;
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_weak(&p, &v, w);
+        assert(b == true);
+        assert(*p == 2);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak_explicit.pass.cpp
new file mode 100644
index 0000000..4837fa9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_compare_exchange_weak_explicit.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// bool
+// atomic_compare_exchange_weak_explicit(shared_ptr<T>* p, shared_ptr<T>* v,
+//                                       shared_ptr<T> w, memory_order success,
+//                                       memory_order failure);
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v(new int(3));
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_weak_explicit(&p, &v, w,
+                                                            std::memory_order_seq_cst,
+                                                            std::memory_order_seq_cst);
+        assert(b == false);
+        assert(*p == 4);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> v = p;
+        std::shared_ptr<int> w(new int(2));
+        bool b = std::atomic_compare_exchange_weak_explicit(&p, &v, w,
+                                                            std::memory_order_seq_cst,
+                                                            std::memory_order_seq_cst);
+        assert(b == true);
+        assert(*p == 2);
+        assert(*v == 4);
+        assert(*w == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange.pass.cpp
new file mode 100644
index 0000000..f488e0e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// shared_ptr<T>
+// atomic_exchange(shared_ptr<T>* p, shared_ptr<T> r)
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> r(new int(3));
+        r = std::atomic_exchange(&p, r);
+        assert(*p == 3);
+        assert(*r == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange_explicit.pass.cpp
new file mode 100644
index 0000000..1945f7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_exchange_explicit.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// shared_ptr<T>
+// atomic_exchange_explicit(shared_ptr<T>* p, shared_ptr<T> r)
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(4));
+        std::shared_ptr<int> r(new int(3));
+        r = std::atomic_exchange_explicit(&p, r, std::memory_order_seq_cst);
+        assert(*p == 3);
+        assert(*r == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_is_lock_free.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_is_lock_free.pass.cpp
new file mode 100644
index 0000000..37f7d12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_is_lock_free.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template<class T>
+// bool
+// atomic_is_lock_free(const shared_ptr<T>* p);
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<int> p(new int(3));
+        assert(std::atomic_is_lock_free(&p) == false);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load.pass.cpp
new file mode 100644
index 0000000..1b9a15a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// shared_ptr<T>
+// atomic_load(const shared_ptr<T>* p)
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p(new int(3));
+        std::shared_ptr<int> q = std::atomic_load(&p);
+        assert(*q == *p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load_explicit.pass.cpp
new file mode 100644
index 0000000..5c29701
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_load_explicit.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// shared_ptr<T>
+// atomic_load_explicit(const shared_ptr<T>* p, memory_order mo)
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<int> p(new int(3));
+        std::shared_ptr<int> q = std::atomic_load_explicit(&p, std::memory_order_relaxed);
+        assert(*q == *p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store.pass.cpp
new file mode 100644
index 0000000..5b7bd5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// void
+// atomic_store(shared_ptr<T>* p, shared_ptr<T> r)
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p;
+        std::shared_ptr<int> r(new int(3));
+        std::atomic_store(&p, r);
+        assert(*p == *r);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store_explicit.pass.cpp
new file mode 100644
index 0000000..5712190
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared.atomic/atomic_store_explicit.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: no-threads
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+// void
+// atomic_store_explicit(shared_ptr<T>* p, shared_ptr<T> r, memory_order mo)
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+
+#include <atomic>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<int> p;
+        std::shared_ptr<int> r(new int(3));
+        std::atomic_store_explicit(&p, r, std::memory_order_seq_cst);
+        assert(*p == *r);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..b34bcda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// shared_ptr
+
+#include <memory>
+
+#include <iterator>
+
+static_assert(std::indirectly_readable<std::shared_ptr<int> >);
+static_assert(std::indirectly_writable<std::shared_ptr<int>, int>);
+static_assert(!std::weakly_incrementable<std::shared_ptr<int> >);
+static_assert(std::indirectly_movable<std::shared_ptr<int>, std::shared_ptr<int>>);
+static_assert(std::indirectly_movable_storable<std::shared_ptr<int>, std::shared_ptr<int>>);
+static_assert(std::indirectly_copyable<std::shared_ptr<int>, std::shared_ptr<int>>);
+static_assert(std::indirectly_copyable_storable<std::shared_ptr<int>, std::shared_ptr<int>>);
+static_assert(std::indirectly_swappable<std::shared_ptr<int>, std::shared_ptr<int> >);
+
+static_assert(!std::indirectly_readable<std::shared_ptr<void> >);
+static_assert(!std::indirectly_writable<std::shared_ptr<void>, void>);
+static_assert(!std::weakly_incrementable<std::shared_ptr<void> >);
+static_assert(!std::indirectly_movable<std::shared_ptr<void>, std::shared_ptr<void>>);
+static_assert(!std::indirectly_movable_storable<std::shared_ptr<void>, std::shared_ptr<void>>);
+static_assert(!std::indirectly_copyable<std::shared_ptr<void>, std::shared_ptr<void>>);
+static_assert(!std::indirectly_copyable_storable<std::shared_ptr<void>, std::shared_ptr<void>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/types.pass.cpp
new file mode 100644
index 0000000..c717658
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/types.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class T> class shared_ptr
+// {
+// public:
+//     typedef T element_type; // until C++17
+//     typedef remove_extent_t<T> element_type; // since C++17
+//     typedef weak_ptr<T> weak_type; // C++17
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+template <typename T, typename = std::void_t<> >
+struct has_less : std::false_type {};
+
+template <typename T>
+struct has_less<T,
+                std::void_t<decltype(std::declval<T>() < std::declval<T>())> >
+    : std::true_type {};
+#endif
+
+struct A;  // purposefully incomplete
+struct B {
+  int x;
+  B() = default;
+};
+
+template <class T>
+void test() {
+  ASSERT_SAME_TYPE(typename std::shared_ptr<T>::element_type, T);
+#if TEST_STD_VER > 14
+  ASSERT_SAME_TYPE(typename std::shared_ptr<T>::weak_type, std::weak_ptr<T>);
+  static_assert(std::is_copy_constructible<std::shared_ptr<T> >::value, "");
+  static_assert(std::is_copy_assignable<std::shared_ptr<T> >::value, "");
+  static_assert(has_less<std::shared_ptr<T> >::value);
+  ASSERT_SAME_TYPE(typename std::shared_ptr<T[]>::element_type, T);
+  ASSERT_SAME_TYPE(typename std::shared_ptr<T[8]>::element_type, T);
+#endif
+}
+
+int main(int, char**) {
+  test<A>();
+  test<B>();
+  test<int>();
+  test<char*>();
+
+#if TEST_STD_VER > 14
+  ASSERT_SAME_TYPE(typename std::shared_ptr<int[][2]>::element_type, int[2]);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.getdeleter/get_deleter.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.getdeleter/get_deleter.pass.cpp
new file mode 100644
index 0000000..bc0b876
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.getdeleter/get_deleter.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class D, class T> D* get_deleter(const shared_ptr<T>& p);
+
+// UNSUPPORTED: no-rtti
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        {
+            A* ptr = new A;
+            std::shared_ptr<A> p(ptr, test_deleter<A>(3));
+            test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+            assert(test_deleter<A>::count == 1);
+            assert(test_deleter<A>::dealloc_count == 0);
+            assert(d);
+            assert(d->state() == 3);
+        }
+        assert(A::count == 0);
+        assert(test_deleter<A>::count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+    }
+    test_deleter<A>::dealloc_count = 0;
+    {
+        {
+            std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
+            test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+            assert(test_deleter<A>::count == 1);
+            assert(test_deleter<A>::dealloc_count == 0);
+            assert(d);
+            assert(d->state() == 3);
+        }
+        assert(A::count == 0);
+        assert(test_deleter<A>::count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+    }
+    test_deleter<A>::dealloc_count = 0;
+    {
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
+        std::default_delete<A>* d = std::get_deleter<std::default_delete<A> >(p);
+        assert(d == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/auto_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/auto_ptr_Y.pass.cpp
new file mode 100644
index 0000000..ed601b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/auto_ptr_Y.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr& operator=(auto_ptr<Y>&& r);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::auto_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::auto_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 1);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::auto_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::auto_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 1);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr.pass.cpp
new file mode 100644
index 0000000..7bf1501
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// shared_ptr& operator=(const shared_ptr& r);
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB(new A);
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 2);
+            assert(pA.use_count() == 2);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        const std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB(new A);
+            pB = pA;
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        const std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB;
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 2);
+            assert(pA.use_count() == 2);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        const std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB;
+            pB = pA;
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_Y.pass.cpp
new file mode 100644
index 0000000..9b7e43f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_Y.pass.cpp
@@ -0,0 +1,144 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr& operator=(const shared_ptr<Y>& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 2);
+            assert(pA.use_count() == 2);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        const std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = pA;
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        const std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 2);
+            assert(pA.use_count() == 2);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        const std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = pA;
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == pB.get());
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> p1(new A[8]);
+        A* ptr = p1.get();
+        assert(A::count == 8);
+        {
+            std::shared_ptr<const A[]> p2;
+            p2 = p1;
+            assert(A::count == 8);
+            assert(p2.use_count() == 2);
+            assert(p1.use_count() == 2);
+            assert(p1.get() == p2.get());
+            assert(p2.get() == ptr);
+        }
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_Y_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_Y_rv.pass.cpp
new file mode 100644
index 0000000..2a0a523
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_Y_rv.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr& operator=(shared_ptr<Y>&& r);
+
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> p1(new A[8]);
+        A* ptr = p1.get();
+        assert(A::count == 8);
+        {
+            std::shared_ptr<const A[]> p2;
+            p2 = std::move(p1);
+            assert(A::count == 8);
+            assert(p2.use_count() == 1);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == nullptr);
+            assert(p2.get() == ptr);
+        }
+        assert(p1.use_count() == 0);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp
new file mode 100644
index 0000000..f48fe75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/shared_ptr_rv.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// shared_ptr
+
+// shared_ptr& operator=(shared_ptr&& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB(new A);
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB(new A);
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB;
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<A> pB;
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp
new file mode 100644
index 0000000..35671c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.assign/unique_ptr_Y.pass.cpp
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template <class Y, class D> shared_ptr& operator=(unique_ptr<Y, D>&& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+template <class T>
+struct StatefulArrayDeleter {
+  int state = 0;
+
+  StatefulArrayDeleter(int val = 0) : state(val) {}
+  StatefulArrayDeleter(StatefulArrayDeleter const&) { assert(false); }
+
+  void operator()(T* ptr) {
+    assert(state == 42);
+    delete []ptr;
+  }
+};
+
+int main(int, char**)
+{
+    {
+        std::unique_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::unique_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB(new B);
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+//          assert(pB.use_count() == 1); // no longer true due to LWG 2415
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::unique_ptr<A> pA(new A);
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::unique_ptr<A> pA;
+        A* ptrA = pA.get();
+        {
+            std::shared_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+//          assert(pB.use_count() == 1); // no longer true due to LWG 2415
+            assert(pA.get() == 0);
+            assert(pB.get() == ptrA);
+        }
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#ifdef _LIBCPP_VERSION // https://llvm.org/PR53368
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<B> p;
+      p = std::move(ptr);
+      assert(A::count == 8);
+      assert(B::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<A> p;
+      p = std::move(ptr);
+      assert(A::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+
+    {
+      std::unique_ptr<int[]> ptr(new int[8]);
+      std::shared_ptr<int> p;
+      p = std::move(ptr);
+    }
+#endif // _LIBCPP_VERSION
+
+#if TEST_STD_VER > 14
+    {
+      StatefulArrayDeleter<A> d;
+      std::unique_ptr<A[], StatefulArrayDeleter<A>&> u(new A[4], d);
+      std::shared_ptr<A[]> p;
+      p = std::move(u);
+      d.state = 42;
+      assert(A::count == 4);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+#ifdef _LIBCPP_VERSION // https://llvm.org/PR53368
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<B[]> p;
+      p = std::move(ptr);
+      assert(A::count == 8);
+      assert(B::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+#endif // _LIBCPP_VERSION
+
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<A[]> p;
+      p = std::move(ptr);
+      assert(A::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+
+    {
+      std::unique_ptr<int[]> ptr(new int[8]);
+      std::shared_ptr<int[]> p;
+      p = std::move(ptr);
+    }
+#endif // TEST_STD_VER >= 14
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/const_pointer_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/const_pointer_cast.pass.cpp
new file mode 100644
index 0000000..d0da8c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/const_pointer_cast.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class U> shared_ptr<T> const_pointer_cast(const shared_ptr<U>& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<const A> pA(new A);
+        std::shared_ptr<A> pB = std::const_pointer_cast<A>(pA);
+        assert(pB.get() == pA.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+    {
+        const std::shared_ptr<const A> pA;
+        std::shared_ptr<A> pB = std::const_pointer_cast<A>(pA);
+        assert(pB.get() == pA.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+#if TEST_STD_VER > 14
+    {
+      const std::shared_ptr<const A[8]> pA;
+      std::shared_ptr<A[8]> pB = std::const_pointer_cast<A[8]>(pA);
+      assert(pB.get() == pA.get());
+      assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+#endif // TEST_STD_VER > 14
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/dynamic_pointer_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/dynamic_pointer_cast.pass.cpp
new file mode 100644
index 0000000..7a8041e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/dynamic_pointer_cast.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class U> shared_ptr<T> dynamic_pointer_cast(const shared_ptr<U>& r);
+
+// UNSUPPORTED: no-rtti
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<B> pB(new A);
+        std::shared_ptr<A> pA = std::dynamic_pointer_cast<A>(pB);
+        assert(pA.get() == pB.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+    {
+        const std::shared_ptr<B> pB(new B);
+        std::shared_ptr<A> pA = std::dynamic_pointer_cast<A>(pB);
+        assert(pA.get() == 0);
+        assert(pA.use_count() == 0);
+    }
+#if TEST_STD_VER > 14
+    {
+      const std::shared_ptr<B[8]> pB(new B[8]);
+      std::shared_ptr<A[8]> pA = std::dynamic_pointer_cast<A[8]>(pB);
+      assert(pA.get() == 0);
+      assert(pA.use_count() == 0);
+    }
+#endif // TEST_STD_VER > 14
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/reinterpret_pointer_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/reinterpret_pointer_cast.pass.cpp
new file mode 100644
index 0000000..743d60c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/reinterpret_pointer_cast.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class U>
+//     shared_ptr<T> reinterpret_pointer_cast(const shared_ptr<U>& r) noexcept;
+
+#include "test_macros.h"
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+struct A {
+  int x;
+};
+
+struct Base { };
+struct Derived : public Base { };
+
+int main(int, char**) {
+  {
+    const std::shared_ptr<A> pA(new A);
+    std::shared_ptr<int> pi = std::reinterpret_pointer_cast<int>(pA);
+    std::shared_ptr<A> pA2 = std::reinterpret_pointer_cast<A>(pi);
+    assert(pA2.get() == pA.get());
+    assert(!pi.owner_before(pA) && !pA.owner_before(pi));
+  }
+  {
+    const std::shared_ptr<A> pA;
+    std::shared_ptr<int> pi = std::reinterpret_pointer_cast<int>(pA);
+    std::shared_ptr<A> pA2 = std::reinterpret_pointer_cast<A>(pi);
+    assert(pA2.get() == pA.get());
+    assert(!pi.owner_before(pA) && !pA.owner_before(pi));
+  }
+  {
+    const std::shared_ptr<A> pA(new A);
+    std::shared_ptr<int> pi = std::reinterpret_pointer_cast<int>(pA);
+    pA->x = 42;
+    assert(*pi == 42);
+  }
+  {
+    const std::shared_ptr<Derived> pDerived(new Derived);
+    std::shared_ptr<Base> pBase = std::reinterpret_pointer_cast<Base>(pDerived);
+    std::shared_ptr<Derived> pDerived2 = std::reinterpret_pointer_cast<Derived>(pBase);
+    assert(pDerived2.get() == pDerived2.get());
+    assert(!pBase.owner_before(pDerived) && !pDerived.owner_before(pBase));
+  }
+  {
+    const std::shared_ptr<Base> pBase(new Base);
+    std::shared_ptr<Derived> pDerived = std::reinterpret_pointer_cast<Derived>(pBase);
+    std::shared_ptr<Base> pBase2 = std::reinterpret_pointer_cast<Base>(pDerived);
+    assert(pBase2.get() == pBase.get());
+    assert(!pDerived.owner_before(pBase) && !pBase.owner_before(pDerived));
+  }
+#if TEST_STD_VER > 14
+  {
+    const std::shared_ptr<A[8]> pA;
+    std::shared_ptr<int[8]> pi = std::reinterpret_pointer_cast<int[8]>(pA);
+    std::shared_ptr<A[8]> pA2 = std::reinterpret_pointer_cast<A[8]>(pi);
+    assert(pA2.get() == pA.get());
+    assert(!pi.owner_before(pA) && !pA.owner_before(pi));
+  }
+#endif // TEST_STD_VER > 14
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/static_pointer_cast.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/static_pointer_cast.pass.cpp
new file mode 100644
index 0000000..6449f72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cast/static_pointer_cast.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class U> shared_ptr<T> static_pointer_cast(const shared_ptr<U>& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> pA(new A);
+        std::shared_ptr<B> pB = std::static_pointer_cast<B>(pA);
+        assert(pB.get() == pA.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+    {
+        const std::shared_ptr<B> pA(new A);
+        std::shared_ptr<A> pB = std::static_pointer_cast<A>(pA);
+        assert(pB.get() == pA.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+    {
+        const std::shared_ptr<A> pA;
+        std::shared_ptr<B> pB = std::static_pointer_cast<B>(pA);
+        assert(pB.get() == pA.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+    {
+        const std::shared_ptr<B> pA;
+        std::shared_ptr<A> pB = std::static_pointer_cast<A>(pA);
+        assert(pB.get() == pA.get());
+        assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+#if TEST_STD_VER > 14
+    {
+      const std::shared_ptr<A[8]> pA;
+      std::shared_ptr<B[8]> pB = std::static_pointer_cast<B[8]>(pA);
+      assert(pB.get() == pA.get());
+      assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+    {
+      const std::shared_ptr<B[8]> pA;
+      std::shared_ptr<A[8]> pB = std::static_pointer_cast<A[8]>(pA);
+      assert(pB.get() == pA.get());
+      assert(!pB.owner_before(pA) && !pA.owner_before(pB));
+    }
+#endif // TEST_STD_VER > 14
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp.pass.cpp
new file mode 100644
index 0000000..00060ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class U> bool operator==(const shared_ptr<T>& a, const shared_ptr<U>& b);
+// template<class T, class U> bool operator!=(const shared_ptr<T>& a, const shared_ptr<U>& b);
+// template<class T, class U> bool operator< (const shared_ptr<T>& a, const shared_ptr<U>& b);
+// template<class T, class U> bool operator<=(const shared_ptr<T>& a, const shared_ptr<U>& b);
+// template<class T, class U> bool operator> (const shared_ptr<T>& a, const shared_ptr<U>& b);
+// template<class T, class U> bool operator>=(const shared_ptr<T>& a, const shared_ptr<U>& b);
+// template<class T1, class D1, class T2, class D2>
+//   requires three_way_comparable_with<typename unique_ptr<T1, D1>::pointer,
+//                                      typename unique_ptr<T2, D2>::pointer>
+//   compare_three_way_result_t<typename unique_ptr<T1, D1>::pointer,
+//                              typename unique_ptr<T2, D2>::pointer>
+//     operator<=>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+void do_nothing(int*) {}
+
+int main(int, char**) {
+  AssertComparisonsAreNoexcept<std::shared_ptr<int> >();
+  AssertComparisonsReturnBool<std::shared_ptr<int> >();
+#if TEST_STD_VER > 17
+  AssertOrderAreNoexcept<std::shared_ptr<int>>();
+  AssertOrderReturn<std::strong_ordering, std::shared_ptr<int>>();
+#endif
+
+  int* ptr1(new int);
+  int* ptr2(new int);
+  const std::shared_ptr<int> p1(ptr1);
+  const std::shared_ptr<int> p2(ptr2);
+
+  assert(!(p1 == p2));
+  assert(p1 != p2);
+  assert((p1 < p2) == (ptr1 < ptr2));
+  assert((p1 <= p2) == (ptr1 <= ptr2));
+  assert((p1 > p2) == (ptr1 > ptr2));
+  assert((p1 >= p2) == (ptr1 >= ptr2));
+#if TEST_STD_VER > 17
+  assert((p1 <=> p2) != std::strong_ordering::equal);
+  assert((p1 <=> p2) == (ptr1 <=> ptr2));
+#endif
+
+  // The deleter does not influence the comparisons
+  // of the `shared_ptr`
+  const std::shared_ptr<int> p3(ptr2, do_nothing);
+  assert(p2 == p3);
+  assert(!(p1 == p3));
+  assert(!(p2 != p3));
+  assert(p1 != p3);
+  assert((p1 < p3) == (ptr1 < ptr2));
+  assert((p1 <= p3) == (ptr1 <= ptr2));
+  assert((p1 > p3) == (ptr1 > ptr2));
+  assert((p1 >= p3) == (ptr1 >= ptr2));
+#if TEST_STD_VER > 17
+  assert((p2 <=> p3) == std::strong_ordering::equal);
+  assert((p1 <=> p3) != std::strong_ordering::equal);
+  assert((p1 <=> p3) == (ptr1 <=> ptr2));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp_nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp_nullptr.pass.cpp
new file mode 100644
index 0000000..3bc8ef3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.cmp/cmp_nullptr.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template <class T>
+//     bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
+// template <class T>
+//     bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
+// template <class T>
+//     bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
+// template <class T>
+//     bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
+// template <class T>
+//     bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
+// template <class T>
+//     bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
+// template <class T>
+//     bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
+// template <class T>
+//     bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
+// template <class T>
+//     bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
+// template <class T>
+//     bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
+// template <class T>
+//     bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
+// template <class T>
+//     bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
+// template<class T>
+//     strong_ordering operator<=>(shared_ptr<T> const& x, nullptr_t) noexcept;   // C++20
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+void do_nothing(int*) {}
+
+int main(int, char**)
+{
+  AssertComparisonsAreNoexcept<std::shared_ptr<int>, nullptr_t>();
+  AssertComparisonsAreNoexcept<nullptr_t, std::shared_ptr<int> >();
+  AssertComparisonsReturnBool<std::shared_ptr<int>, nullptr_t>();
+  AssertComparisonsReturnBool<nullptr_t, std::shared_ptr<int> >();
+#if TEST_STD_VER > 17
+  AssertOrderAreNoexcept<std::shared_ptr<int>>();
+  AssertOrderReturn<std::strong_ordering, std::shared_ptr<int>>();
+#endif
+
+  const std::shared_ptr<int> p1(new int(1));
+  assert(!(p1 == nullptr));
+  assert(!(nullptr == p1));
+  assert(!(p1 < nullptr));
+  assert((nullptr < p1));
+  assert(!(p1 <= nullptr));
+  assert((nullptr <= p1));
+  assert((p1 > nullptr));
+  assert(!(nullptr > p1));
+  assert((p1 >= nullptr));
+  assert(!(nullptr >= p1));
+#if TEST_STD_VER > 17
+  assert((nullptr <=> p1) == std::strong_ordering::less);
+  assert((p1 <=> nullptr) == std::strong_ordering::greater);
+#endif
+
+  const std::shared_ptr<int> p2;
+  assert((p2 == nullptr));
+  assert((nullptr == p2));
+  assert(!(p2 < nullptr));
+  assert(!(nullptr < p2));
+  assert((p2 <= nullptr));
+  assert((nullptr <= p2));
+  assert(!(p2 > nullptr));
+  assert(!(nullptr > p2));
+  assert((p2 >= nullptr));
+  assert((nullptr >= p2));
+#if TEST_STD_VER > 17
+  assert((nullptr <=> p2) == std::strong_ordering::equivalent);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/auto_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/auto_ptr.pass.cpp
new file mode 100644
index 0000000..6f641ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/auto_ptr.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class Y> explicit shared_ptr(auto_ptr<Y>&& r);
+
+// REQUIRES: c++03 || c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <memory>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    {
+        std::auto_ptr<A> ptr(new A);
+        A* raw_ptr = ptr.get();
+        std::shared_ptr<B> p(std::move(ptr));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == raw_ptr);
+        assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+    globalMemCounter.reset();
+    {
+        std::auto_ptr<A const> ptr(new A);
+        A const* raw_ptr = ptr.get();
+        std::shared_ptr<B const> p(std::move(ptr));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == raw_ptr);
+        assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+#if !defined(TEST_HAS_NO_EXCEPTIONS) && !defined(DISABLE_NEW_COUNT)
+    {
+        std::auto_ptr<A> ptr(new A);
+        A* raw_ptr = ptr.get();
+        globalMemCounter.throw_after = 0;
+        try
+        {
+            std::shared_ptr<B> p(std::move(ptr));
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::count == 1);
+            assert(B::count == 1);
+            assert(ptr.get() == raw_ptr);
+        }
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+#endif // !defined(TEST_HAS_NO_EXCEPTIONS) && !defined(DISABLE_NEW_COUNT)
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp
new file mode 100644
index 0000000..9b875e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/deduction.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class T> class shared_ptr
+
+// shared_ptr(weak_ptr<T>) -> shared_ptr<T>
+// shared_ptr(unique_ptr<T>) -> shared_ptr<T>
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct A {};
+
+struct D {
+  void operator()(A const* ptr) const
+  {
+    delete ptr;
+  }
+};
+
+int main(int, char**)
+{
+  {
+    std::shared_ptr<A> s0(new A);
+    std::weak_ptr<A> w = s0;
+    auto s = std::shared_ptr(w);
+    ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A>);
+    assert(s0.use_count() == 2);
+    assert(s.use_count() == 2);
+    assert(s0.get() == s.get());
+  }
+  {
+    std::shared_ptr<A const> s0(new A);
+    std::weak_ptr<A const> w = s0;
+    auto s = std::shared_ptr(w);
+    ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A const>);
+    assert(s0.use_count() == 2);
+    assert(s.use_count() == 2);
+    assert(s0.get() == s.get());
+  }
+
+  {
+    std::unique_ptr<A> u(new A);
+    A* uPointee = u.get();
+    std::shared_ptr s = std::move(u);
+    ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A>);
+    assert(u == nullptr);
+    assert(s.get() == uPointee);
+  }
+  {
+    std::unique_ptr<A const> u(new A);
+    A const* uPointee = u.get();
+    std::shared_ptr s = std::move(u);
+    ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A const>);
+    assert(u == nullptr);
+    assert(s.get() == uPointee);
+  }
+
+  {
+    std::unique_ptr<A, D> u(new A, D{});
+    A* uPointee = u.get();
+    std::shared_ptr s(std::move(u));
+    ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A>);
+    assert(u == nullptr);
+    assert(s.get() == uPointee);
+  }
+  {
+    std::unique_ptr<A const, D> u(new A, D{});
+    A const* uPointee = u.get();
+    std::shared_ptr s(std::move(u));
+    ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A const>);
+    assert(u == nullptr);
+    assert(s.get() == uPointee);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/default.pass.cpp
new file mode 100644
index 0000000..6ac7ad6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/default.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr();
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {};
+
+template <class T>
+void test() {
+  std::shared_ptr<T> p;
+  assert(p.use_count() == 0);
+  assert(p.get() == 0);
+}
+
+int main(int, char**) {
+  test<int>();
+  test<int const>();
+  test<A>();
+  test<A const>();
+  test<int*>();
+  test<int const*>();
+  test<int[]>();
+  test<int[8]>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t.pass.cpp
new file mode 100644
index 0000000..f307c9e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr(nullptr_t)
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  {
+    std::shared_ptr<int> p(nullptr);
+    assert(p.use_count() == 0);
+    assert(p.get() == 0);
+  }
+
+  {
+    std::shared_ptr<int const> p(nullptr);
+    assert(p.use_count() == 0);
+    assert(p.get() == 0);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter.pass.cpp
new file mode 100644
index 0000000..49497b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class D> shared_ptr(nullptr_t, D d);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
+        assert(A::count == 0);
+        assert(p.use_count() == 1);
+        assert(p.get() == 0);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+
+    {
+        std::shared_ptr<A const> p(nullptr, test_deleter<A const>(3));
+        assert(p.get() == nullptr);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_allocator.pass.cpp
new file mode 100644
index 0000000..4e9fc22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_allocator.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class D, class A> shared_ptr(nullptr_t, D d, A a);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    {
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(3), test_allocator<A>(5, &alloc_stats));
+        assert(A::count == 0);
+        assert(p.use_count() == 1);
+        assert(p.get() == 0);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+        assert(alloc_stats.count == 1);
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+    assert(alloc_stats.count == 0);
+    assert(alloc_stats.alloc_count == 0);
+    test_deleter<A>::dealloc_count = 0;
+
+    // Test an allocator with a minimal interface
+    {
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(1), bare_allocator<void>());
+        assert(A::count == 0);
+        assert(p.use_count() == 1);
+        assert(p.get() == 0);
+        assert(test_deleter<A>::count ==1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 1);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+    test_deleter<A>::dealloc_count = 0;
+
+#if TEST_STD_VER >= 11
+    // Test an allocator that returns class-type pointers
+    {
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(1), min_allocator<void>());
+        assert(A::count == 0);
+        assert(p.use_count() == 1);
+        assert(p.get() == 0);
+        assert(test_deleter<A>::count ==1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 1);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+#endif
+
+    // Make sure we can use this constructor with a pointer-to-const
+    {
+        std::shared_ptr<A const> p(nullptr, test_deleter<A const>(3), test_allocator<A>(5, &alloc_stats));
+        (void)p;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_allocator_throw.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_allocator_throw.pass.cpp
new file mode 100644
index 0000000..5864433
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_allocator_throw.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <memory>
+
+// template<class D, class A> shared_ptr(nullptr_t, D d, A a);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "test_allocator.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    try
+    {
+        alloc_stats.throw_after = 0;
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(3), test_allocator<A>(5, &alloc_stats));
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(A::count == 0);
+        assert(test_deleter<A>::count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+        assert(alloc_stats.count == 0);
+        assert(alloc_stats.alloc_count == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_throw.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_throw.pass.cpp
new file mode 100644
index 0000000..8b028cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter_throw.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: sanitizer-new-delete
+
+// <memory>
+
+// shared_ptr
+
+// template<class D> shared_ptr(nullptr_t, D d);
+
+#include <memory>
+#include <cassert>
+#include <new>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+#include "deleter_types.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+
+int main(int, char**)
+{
+    globalMemCounter.throw_after = 0;
+    try
+    {
+        std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(A::count == 0);
+        assert(test_deleter<A>::count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer.pass.cpp
new file mode 100644
index 0000000..ef3270e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class Y> explicit shared_ptr(Y* p);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        assert(A::count == 0);
+        A* ptr = new A;
+        std::shared_ptr<A> p(ptr);
+        assert(A::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+
+    {
+        assert(A::count == 0);
+        A const* ptr = new A;
+        std::shared_ptr<A const> p(ptr);
+        assert(A::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+
+    {
+        assert(A::count == 0);
+        A* ptr = new A;
+        std::shared_ptr<void> p(ptr);
+        assert(A::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+
+#if TEST_STD_VER > 14
+    {
+        assert(A::count == 0);
+        std::shared_ptr<A[8]> pA(new A[8]);
+        assert(pA.use_count() == 1);
+        assert(A::count == 8);
+    }
+
+    {
+        assert(A::count == 0);
+        std::shared_ptr<A[]> pA(new A[8]);
+        assert(pA.use_count() == 1);
+        assert(A::count == 8);
+    }
+
+    {
+          assert(A::count == 0);
+        std::shared_ptr<const A[]> pA(new A[8]);
+        assert(pA.use_count() == 1);
+        assert(A::count == 8);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter.pass.cpp
new file mode 100644
index 0000000..b3580e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y, class D> shared_ptr(Y* p, D d);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct bad_ty { };
+
+struct bad_deleter
+{
+    void operator()(bad_ty) { }
+};
+
+struct no_move_deleter
+{
+    no_move_deleter(no_move_deleter const&) = delete;
+    no_move_deleter(no_move_deleter &&) = delete;
+    void operator()(int*) { }
+};
+
+static_assert(!std::is_move_constructible<no_move_deleter>::value, "");
+
+struct Base { };
+struct Derived : Base { };
+
+template<class T>
+class MoveDeleter
+{
+    MoveDeleter();
+    MoveDeleter(MoveDeleter const&);
+public:
+    MoveDeleter(MoveDeleter&&) {};
+
+    explicit MoveDeleter(int) {}
+
+    void operator()(T *ptr) { delete ptr; }
+};
+
+int main(int, char**)
+{
+    {
+        A* ptr = new A;
+        std::shared_ptr<A> p(ptr, test_deleter<A>(3));
+        assert(A::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+
+    {
+        A const* ptr = new A;
+        std::shared_ptr<A const> p(ptr, test_deleter<A const>(3));
+        assert(p.get() == ptr);
+    }
+
+    {
+        // Make sure we can't construct with:
+        //    a) a deleter that doesn't have an operator ()(int*)
+        //    b) a deleter that doesn't have a move constructor.
+        static_assert(!std::is_constructible<std::shared_ptr<int>, int*, bad_deleter>::value, "");
+        static_assert(!std::is_constructible<std::shared_ptr<int>, int*, no_move_deleter>::value, "");
+
+        // Make sure that we can construct a shared_ptr where the element type and pointer type
+        // aren't "convertible" but are "compatible".
+        static_assert(!std::is_constructible<std::shared_ptr<Derived[4]>, Base[4], test_deleter<Derived[4]> >::value, "");
+    }
+
+#if TEST_STD_VER >= 11
+    {
+        MoveDeleter<int> d(0);
+        std::shared_ptr<int> p0(new int, std::move(d));
+        std::shared_ptr<int> p1(nullptr, std::move(d));
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_allocator.pass.cpp
new file mode 100644
index 0000000..2fc2528
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_allocator.pass.cpp
@@ -0,0 +1,181 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class Y, class D, class A> shared_ptr(Y* p, D d, A a);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "test_allocator.h"
+#include "min_allocator.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct bad_ty { };
+
+struct bad_deleter
+{
+    void operator()(bad_ty) { }
+};
+
+struct no_move_deleter
+{
+    no_move_deleter(no_move_deleter const&) = delete;
+    no_move_deleter(no_move_deleter &&) = delete;
+    void operator()(int*) { }
+};
+
+static_assert(!std::is_move_constructible<no_move_deleter>::value, "");
+
+struct Base { };
+struct Derived : Base { };
+
+template<class T>
+class MoveDeleter
+{
+    MoveDeleter();
+    MoveDeleter(MoveDeleter const&);
+public:
+    MoveDeleter(MoveDeleter&&) {};
+
+    explicit MoveDeleter(int) {}
+
+    void operator()(T *ptr) { delete ptr; }
+};
+
+int main(int, char**)
+{
+    {
+        test_allocator_statistics alloc_stats;
+        {
+            A* ptr = new A;
+            std::shared_ptr<A> p(ptr, test_deleter<A>(3), test_allocator<A>(5, &alloc_stats));
+            assert(A::count == 1);
+            assert(p.use_count() == 1);
+            assert(p.get() == ptr);
+            assert(test_deleter<A>::count == 1);
+            assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+            test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+            assert(d);
+            assert(d->state() == 3);
+#endif
+            assert(alloc_stats.count == 1);
+            assert(alloc_stats.alloc_count == 1);
+        }
+        assert(A::count == 0);
+        assert(test_deleter<A>::count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+        assert(alloc_stats.count == 0);
+        assert(alloc_stats.alloc_count == 0);
+        test_deleter<A>::dealloc_count = 0;
+    }
+
+    {
+        test_allocator_statistics alloc_stats;
+        {
+            A const* ptr = new A;
+            std::shared_ptr<A const> p(ptr, test_deleter<A const>(3), test_allocator<A>(5, &alloc_stats));
+            assert(A::count == 1);
+            assert(p.use_count() == 1);
+            assert(p.get() == ptr);
+            assert(test_deleter<A const>::count == 1);
+            assert(test_deleter<A const>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+            test_deleter<A const>* d = std::get_deleter<test_deleter<A const> >(p);
+            assert(d);
+            assert(d->state() == 3);
+#endif
+            assert(alloc_stats.count == 1);
+            assert(alloc_stats.alloc_count == 1);
+        }
+        assert(A::count == 0);
+        assert(test_deleter<A const>::count == 0);
+        assert(test_deleter<A const>::dealloc_count == 1);
+        assert(alloc_stats.count == 0);
+        assert(alloc_stats.alloc_count == 0);
+        test_deleter<A const>::dealloc_count = 0;
+    }
+
+    // Test an allocator with a minimal interface
+    {
+        A* ptr = new A;
+        std::shared_ptr<A> p(ptr, test_deleter<A>(3), bare_allocator<void>());
+        assert(A::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+    test_deleter<A>::dealloc_count = 0;
+
+#if TEST_STD_VER >= 11
+    // Test an allocator that returns class-type pointers
+    {
+        A* ptr = new A;
+        std::shared_ptr<A> p(ptr, test_deleter<A>(3), min_allocator<void>());
+        assert(A::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+
+    {
+        MoveDeleter<int> d(0);
+        std::shared_ptr<int> p2(new int, std::move(d), std::allocator<int>());
+        std::shared_ptr<int> p3(nullptr, std::move(d), std::allocator<int>());
+    }
+#endif // TEST_STD_VER >= 11
+
+    {
+        // Make sure we can't construct with:
+        //    a) a deleter that doesn't have an operator ()(int*)
+        //    b) a deleter that doesn't have a move constructor.
+        static_assert(!std::is_constructible<std::shared_ptr<int>, int*, bad_deleter,
+                                             test_allocator<A> >::value, "");
+        static_assert(!std::is_constructible<std::shared_ptr<int>, int*, no_move_deleter,
+                                             test_allocator<A> >::value, "");
+
+        // Make sure that we can construct a shared_ptr where the element type and pointer type
+        // aren't "convertible" but are "compatible".
+        static_assert(!std::is_constructible<std::shared_ptr<Derived[4]>,
+                                             Base[4], test_deleter<Derived[4]>,
+                                             test_allocator<Derived[4]> >::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_allocator_throw.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_allocator_throw.pass.cpp
new file mode 100644
index 0000000..6baf2de
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_allocator_throw.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// <memory>
+
+// template<class Y, class D, class A> shared_ptr(Y* p, D d, A a);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "test_allocator.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    A* ptr = new A;
+    try
+    {
+        alloc_stats.throw_after = 0;
+        std::shared_ptr<A> p(ptr, test_deleter<A>(3), test_allocator<A>(5, &alloc_stats));
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(alloc_stats.count == 0);
+        assert(alloc_stats.count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+        assert(alloc_stats.count == 0);
+        assert(alloc_stats.alloc_count == 0);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_throw.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_throw.pass.cpp
new file mode 100644
index 0000000..d5577bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_deleter_throw.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: sanitizer-new-delete
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y, class D> shared_ptr(Y* p, D d);
+
+#include <memory>
+#include <cassert>
+#include <new>
+#include <cstdlib>
+
+#include "count_new.h"
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    A* ptr = new A;
+    globalMemCounter.throw_after = 0;
+    try
+    {
+        std::shared_ptr<A> p(ptr, test_deleter<A>(3));
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(A::count == 0);
+        assert(test_deleter<A>::count == 0);
+        assert(test_deleter<A>::dealloc_count == 1);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_throw.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_throw.pass.cpp
new file mode 100644
index 0000000..6a675e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/pointer_throw.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: sanitizer-new-delete
+
+// <memory>
+
+// template<class Y> explicit shared_ptr(Y* p);
+
+
+#include <memory>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    A* ptr = new A;
+    assert(A::count == 1);
+    globalMemCounter.throw_after = 0;
+    try
+    {
+        std::shared_ptr<A> p(ptr);
+        assert(false);
+    }
+    catch (std::bad_alloc&)
+    {
+        assert(A::count == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr.pass.cpp
new file mode 100644
index 0000000..fcb6ae7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// shared_ptr(const shared_ptr& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+        {
+            std::shared_ptr<A> pA2(pA);
+            assert(A::count == 1);
+            assert(pA.use_count() == 2);
+            assert(pA2.use_count() == 2);
+            assert(pA2.get() == pA.get());
+        }
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(A::count == 0);
+        {
+            std::shared_ptr<A> pA2(pA);
+            assert(A::count == 0);
+            assert(pA.use_count() == 0);
+            assert(pA2.use_count() == 0);
+            assert(pA2.get() == pA.get());
+        }
+        assert(pA.use_count() == 0);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+
+    {
+        std::shared_ptr<A const> pA(new A);
+        std::shared_ptr<A const> pA2(pA);
+        assert(pA.get() == pA2.get());
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_Y.pass.cpp
new file mode 100644
index 0000000..26f381c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_Y.pass.cpp
@@ -0,0 +1,162 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr(const shared_ptr<Y>& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct C
+{
+    static int count;
+
+    C() {++count;}
+    C(const C&) {++count;}
+    virtual ~C() {--count;}
+};
+
+int C::count = 0;
+
+class private_delete_op
+{
+    static void operator delete (void *p) {
+        return delete static_cast<char*>(p);
+    }
+public:
+    static void operator delete[] (void *p) {
+        return delete[] static_cast<char*>(p);
+    }
+};
+
+class private_delete_arr_op
+{
+    static void operator delete[] (void *p) {
+        return delete[] static_cast<char*>(p);
+    }
+public:
+    static void operator delete (void *p) {
+        return delete static_cast<char*>(p);
+    }
+};
+
+int main(int, char**)
+{
+    static_assert(( std::is_convertible<std::shared_ptr<A>, std::shared_ptr<B> >::value), "");
+    static_assert((!std::is_convertible<std::shared_ptr<B>, std::shared_ptr<A> >::value), "");
+    static_assert((!std::is_convertible<std::shared_ptr<A>, std::shared_ptr<C> >::value), "");
+    {
+        const std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+        {
+            std::shared_ptr<B> pB(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 2);
+            assert(pA.use_count() == 2);
+            assert(pA.get() == pB.get());
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+        {
+            std::shared_ptr<B> pB(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == pB.get());
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+    // This should work in C++03 but we get errors when trying to do SFINAE with the delete operator.
+    // GCC also complains about this.
+#if TEST_STD_VER >= 11 && !defined(TEST_COMPILER_GCC)
+    {
+        // LWG2874: Make sure that when T (for std::shared_ptr<T>) is an array type,
+        //          this constructor only participates in overload resolution when
+        //          `delete[] p` is well formed. And when T is not an array type,
+        //          this constructor only participates in overload resolution when
+        //          `delete p` is well formed.
+        static_assert(!std::is_constructible<std::shared_ptr<private_delete_op>,
+                                                             private_delete_op*>::value, "");
+        static_assert(!std::is_constructible<std::shared_ptr<private_delete_arr_op[4]>,
+                                                             private_delete_arr_op*>::value, "");
+    }
+#endif
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> p1(new A[8]);
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+        {
+            std::shared_ptr<const A[]> p2(p1);
+            assert(A::count == 8);
+            assert(p2.use_count() == 2);
+            assert(p1.use_count() == 2);
+            assert(p1.get() == p2.get());
+        }
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+#endif
+
+    {
+        std::shared_ptr<A const> pA(new A);
+        std::shared_ptr<B const> pB(pA);
+        assert(pB.get() == pA.get());
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_Y_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_Y_rv.pass.cpp
new file mode 100644
index 0000000..84ec26e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_Y_rv.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr(shared_ptr<Y>&& r);
+
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct C
+{
+    static int count;
+
+    C() {++count;}
+    C(const C&) {++count;}
+    virtual ~C() {--count;}
+};
+
+int C::count = 0;
+
+int main(int, char**)
+{
+    static_assert(( std::is_convertible<std::shared_ptr<A>, std::shared_ptr<B> >::value), "");
+    static_assert((!std::is_convertible<std::shared_ptr<B>, std::shared_ptr<A> >::value), "");
+    static_assert((!std::is_convertible<std::shared_ptr<A>, std::shared_ptr<C> >::value), "");
+    {
+        std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+        {
+            B* p = pA.get();
+            std::shared_ptr<B> pB(std::move(pA));
+            assert(B::count == 1);
+            assert(A::count == 1);
+#if TEST_STD_VER >= 11
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 0);
+#else
+            assert(pB.use_count() == 2);
+            assert(pA.use_count() == 2);
+#endif
+            assert(p == pB.get());
+        }
+#if TEST_STD_VER >= 11
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+#else
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+#endif
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+        {
+            std::shared_ptr<B> pB(std::move(pA));
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+            assert(pA.get() == pB.get());
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> p1;
+        assert(p1.use_count() == 0);
+        assert(A::count == 0);
+        {
+            std::shared_ptr<const A[]> p2(p1);
+            assert(A::count == 0);
+            assert(p2.use_count() == 0);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == p2.get());
+        }
+        assert(p1.use_count() == 0);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+#endif
+
+    {
+        std::shared_ptr<A const> pA(new A);
+        B const* p = pA.get();
+        std::shared_ptr<B const> pB(std::move(pA));
+        assert(pB.get() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp
new file mode 100644
index 0000000..e937cf4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_copy_move.fail.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr(const shared_ptr<Y>& r);
+
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct A {
+  int x = 42;
+};
+
+struct ADel : std::default_delete<A> {
+  typedef A* pointer;
+};
+
+int main(int, char**) {
+  static_assert(!(std::is_convertible<A, int>::value), "");
+
+  {
+    std::shared_ptr<A> pA;
+    std::shared_ptr<int> pi(pA); // expected-error {{no matching constructor for initialization of 'std::shared_ptr<int>'}}
+  }
+  {
+    std::shared_ptr<A> pA;
+    std::shared_ptr<int> pi(std::move(pA)); // expected-error {{no matching constructor for initialization of 'std::shared_ptr<int>'}}
+  }
+  {
+    std::weak_ptr<A> pA;
+    std::shared_ptr<int> pi(std::move(pA)); // expected-error {{no matching constructor for initialization of 'std::shared_ptr<int>'}}
+  }
+
+#if TEST_STD_VER > 14
+  {
+    std::unique_ptr<int, ADel> ui;
+    std::shared_ptr<int> pi(std::move(ui)); // expected-error {{no matching constructor for initialization of 'std::shared_ptr<int>'}}
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp
new file mode 100644
index 0000000..4c66312
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_pointer.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> shared_ptr(const shared_ptr<Y>& r, T *p);
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+
+        {
+            B b;
+            std::shared_ptr<B> pB(pA, &b);
+            assert(A::count == 1);
+            assert(B::count == 1);
+            assert(pA.use_count() == 2);
+            assert(pB.use_count() == 2);
+            assert(pB.get() == &b);
+        }
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+        assert(B::count == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+    {
+        std::shared_ptr<A const> pA(new A);
+        assert(pA.use_count() == 1);
+
+        {
+            B const b;
+            std::shared_ptr<B const> pB(pA, &b);
+            assert(A::count == 1);
+            assert(B::count == 1);
+            assert(pA.use_count() == 2);
+            assert(pB.use_count() == 2);
+            assert(pB.get() == &b);
+        }
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+        assert(B::count == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+    int *pi = new int;
+    {
+      std::shared_ptr<int> p1(nullptr);
+      std::shared_ptr<int> p2(p1, pi);
+      assert(p2.get() == pi);
+    }
+    delete pi;
+    {
+      std::shared_ptr<int> p1(new int);
+      std::shared_ptr<int> p2(p1, nullptr);
+      assert(p2.get() == nullptr);
+    }
+
+#if TEST_STD_VER > 17 && defined(_LIBCPP_VERSION)
+    // This won't pass when LWG-2996 is implemented.
+    {
+      std::shared_ptr<A> pA(new A);
+      assert(pA.use_count() == 1);
+
+      {
+        B b;
+        std::shared_ptr<B> pB(std::move(pA), &b);
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(pA.use_count() == 2);
+        assert(pB.use_count() == 2);
+        assert(pB.get() == &b);
+      }
+      assert(pA.use_count() == 1);
+      assert(A::count == 1);
+      assert(B::count == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp
new file mode 100644
index 0000000..3bba84a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/shared_ptr_rv.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// shared_ptr
+
+// shared_ptr(shared_ptr&& r);
+
+#include <memory>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+        {
+            A* p = pA.get();
+            std::shared_ptr<A> pA2(std::move(pA));
+            assert(A::count == 1);
+#if TEST_STD_VER >= 11
+            assert(pA.use_count() == 0);
+            assert(pA2.use_count() == 1);
+#else
+            assert(pA.use_count() == 2);
+            assert(pA2.use_count() == 2);
+#endif
+            assert(pA2.get() == p);
+        }
+#if TEST_STD_VER >= 11
+        assert(pA.use_count() == 0);
+        assert(A::count == 0);
+#else
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+#endif
+    }
+
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(A::count == 0);
+        {
+            std::shared_ptr<A> pA2(std::move(pA));
+            assert(A::count == 0);
+            assert(pA.use_count() == 0);
+            assert(pA2.use_count() == 0);
+            assert(pA2.get() == pA.get());
+        }
+        assert(pA.use_count() == 0);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+
+    {
+        std::shared_ptr<A const> pA(new A);
+        A const* p = pA.get();
+        std::shared_ptr<A const> pA2(std::move(pA));
+        assert(pA2.get() == p);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp
new file mode 100644
index 0000000..871aac6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/unique_ptr.pass.cpp
@@ -0,0 +1,276 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: sanitizer-new-delete
+
+// <memory>
+
+// template <class Y, class D> shared_ptr(unique_ptr<Y, D>&&r);
+
+#include <memory>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+void fn ( const std::shared_ptr<int> &) {}
+void fn ( const std::shared_ptr<B> &) { assert (false); }
+
+template <typename T>
+void assert_deleter ( T * ) { assert(false); }
+
+namespace adl {
+struct D {
+    void operator()(int *) const {}
+};
+void ref(D);
+}
+
+template <class T>
+struct StatefulDeleter {
+  int state = 0;
+
+  StatefulDeleter(int val = 0) : state(val) {}
+  StatefulDeleter(StatefulDeleter const&) { assert(false); }
+
+  void operator()(T* ptr) {
+    assert(state == 42);
+    delete ptr;
+  }
+};
+
+template <class T>
+struct StatefulArrayDeleter {
+  int state = 0;
+
+  StatefulArrayDeleter(int val = 0) : state(val) {}
+  StatefulArrayDeleter(StatefulArrayDeleter const&) { assert(false); }
+
+  void operator()(T* ptr) {
+    assert(state == 42);
+    delete []ptr;
+  }
+};
+
+struct MovingDeleter {
+  explicit MovingDeleter(int *moves) : moves_(moves) {}
+  MovingDeleter(MovingDeleter&& rhs) : moves_(rhs.moves_) { *moves_ += 1; }
+  void operator()(int*) const {}
+  int *moves_;
+};
+
+int main(int, char**)
+{
+    {
+        std::unique_ptr<A> ptr(new A);
+        A* raw_ptr = ptr.get();
+        std::shared_ptr<B> p(std::move(ptr));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == raw_ptr);
+        assert(ptr.get() == 0);
+    }
+
+    {
+        std::unique_ptr<A const> ptr(new A);
+        A const* raw_ptr = ptr.get();
+        std::shared_ptr<B const> p(std::move(ptr));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == raw_ptr);
+        assert(ptr.get() == 0);
+    }
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    assert(A::count == 0);
+    {
+        std::unique_ptr<A> ptr(new A);
+        A* raw_ptr = ptr.get();
+        globalMemCounter.throw_after = 0;
+        try
+        {
+            std::shared_ptr<B> p(std::move(ptr));
+            assert(false);
+        }
+        catch (...)
+        {
+            assert(A::count == 1);
+            assert(B::count == 1);
+            assert(ptr.get() == raw_ptr);
+        }
+    }
+#endif
+
+#if TEST_STD_VER > 14
+    {
+      std::unique_ptr<int> ptr;
+      std::shared_ptr<int> p(std::move(ptr));
+      assert(p.get() == 0);
+      assert(p.use_count() == 0);
+    }
+#endif
+
+    {
+      StatefulDeleter<A> d;
+      std::unique_ptr<A, StatefulDeleter<A>&> u(new A, d);
+      std::shared_ptr<A> p(std::move(u));
+      d.state = 42;
+      assert(A::count == 1);
+    }
+    assert(A::count == 0);
+
+    { // LWG 2399
+        fn(std::unique_ptr<int>(new int));
+    }
+#if TEST_STD_VER >= 14
+    { // LWG 2415
+        std::unique_ptr<int, void (*)(int*)> p(nullptr, assert_deleter<int>);
+        std::shared_ptr<int> p2(std::move(p)); // should not call deleter when going out of scope
+    }
+#endif
+
+    {
+    adl::D d;
+    std::unique_ptr<int, adl::D&> u(nullptr, d);
+    std::shared_ptr<int> s = std::move(u);
+    }
+
+    assert(A::count == 0);
+#ifdef _LIBCPP_VERSION // https://llvm.org/PR53368
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<B> p(std::move(ptr));
+      assert(A::count == 8);
+      assert(B::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<A> p(std::move(ptr));
+      assert(A::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+
+    {
+      std::unique_ptr<int[]> ptr(new int[8]);
+      std::shared_ptr<int> p(std::move(ptr));
+    }
+#endif // _LIBCPP_VERSION
+
+#if TEST_STD_VER > 14
+    {
+      StatefulArrayDeleter<A> d;
+      std::unique_ptr<A[], StatefulArrayDeleter<A>&> u(new A[4], d);
+      std::shared_ptr<A[]> p(std::move(u));
+      d.state = 42;
+      assert(A::count == 4);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+#ifdef _LIBCPP_VERSION // https://llvm.org/PR53368
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<B[]> p(std::move(ptr));
+      assert(A::count == 8);
+      assert(B::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+    assert(B::count == 0);
+#endif // _LIBCPP_VERSION
+
+    {
+      std::unique_ptr<A[]> ptr(new A[8]);
+      A* raw_ptr = ptr.get();
+      std::shared_ptr<A[]> p(std::move(ptr));
+      assert(A::count == 8);
+      assert(p.use_count() == 1);
+      assert(p.get() == raw_ptr);
+      assert(ptr.get() == 0);
+    }
+    assert(A::count == 0);
+
+    {
+      int *p = new int[8];
+      std::unique_ptr<int[]> u(p);
+      std::shared_ptr<int[]> s(std::move(u));
+      assert(u == nullptr);
+      assert(s.get() == p);
+    }
+#endif // TEST_STD_VER > 14
+
+    { // LWG 3548
+      {
+        int moves = 0;
+        int i = 42;
+        std::unique_ptr<int, MovingDeleter> u(&i, MovingDeleter(&moves));
+        assert(moves == 1);
+        std::shared_ptr<int> s(std::move(u));
+        assert(moves >= 2);
+        assert(u == nullptr);
+        assert(s.get() == &i);
+      }
+
+#if TEST_STD_VER > 14
+      {
+        int moves = 0;
+        int a[8];
+        std::unique_ptr<int[], MovingDeleter> u(a, MovingDeleter(&moves));
+        assert(moves == 1);
+        std::shared_ptr<int[]> s = std::move(u);
+        assert(moves >= 2);
+        assert(u == nullptr);
+        assert(s.get() == a);
+      }
+#endif // TEST_STD_VER > 14
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/weak_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/weak_ptr.pass.cpp
new file mode 100644
index 0000000..57d7cc5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/weak_ptr.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> explicit shared_ptr(const weak_ptr<Y>& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::weak_ptr<A> wp;
+        try
+        {
+            std::shared_ptr<A> sp(wp);
+            assert(false);
+        }
+        catch (std::bad_weak_ptr&)
+        {
+        }
+        assert(A::count == 0);
+    }
+#endif
+    {
+        std::shared_ptr<A> sp0(new A);
+        std::weak_ptr<A> wp(sp0);
+        std::shared_ptr<A> sp(wp);
+        assert(sp.use_count() == 2);
+        assert(sp.get() == sp0.get());
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A const> sp0(new A);
+        std::weak_ptr<A const> wp(sp0);
+        std::shared_ptr<A const> sp(wp);
+        assert(sp.use_count() == 2);
+        assert(sp.get() == sp0.get());
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::shared_ptr<A> sp0(new A);
+        std::weak_ptr<A> wp(sp0);
+        sp0.reset();
+        try
+        {
+            std::shared_ptr<A> sp(wp);
+            assert(false);
+        }
+        catch (std::bad_weak_ptr&)
+        {
+        }
+    }
+    assert(A::count == 0);
+#endif
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> sp0(new A[8]);
+        std::weak_ptr<A[]> wp(sp0);
+        std::shared_ptr<const A[]> sp(wp);
+        assert(sp.use_count() == 2);
+        assert(sp.get() == sp0.get());
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp
new file mode 100644
index 0000000..06e767f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.bounded.pass.cpp
@@ -0,0 +1,418 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Aligned deallocation isn't provided before macOS 10.14, and some tests for overaligned types
+// below require that feature.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13}}
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class A>
+// shared_ptr<T> allocate_shared(const A& a); // T is U[N]
+//
+// template<class T, class A>
+// shared_ptr<T> allocate_shared(const A& a, const remove_extent_t<T>& u); // T is U[N]
+
+#include <cassert>
+#include <concepts>
+#include <cstdint> // std::uintptr_t
+#include <memory>
+#include <utility>
+
+#include "min_allocator.h"
+#include "operator_hijacker.h"
+#include "types.h"
+
+template <class T, class ...Args>
+concept CanAllocateShared = requires(Args&& ...args) {
+  { std::allocate_shared<T>(std::forward<Args>(args)...) } -> std::same_as<std::shared_ptr<T>>;
+};
+
+int main(int, char**) {
+  // Make sure we initialize elements correctly
+  {
+    // Without passing an initial value
+    {
+      using Array = int[8];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == 0);
+      }
+    }
+    {
+      using Array = int[8][3];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 0);
+        assert(ptr[i][1] == 0);
+        assert(ptr[i][2] == 0);
+      }
+    }
+    {
+      using Array = int[8][3][2];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 0);
+        assert(ptr[i][0][1] == 0);
+        assert(ptr[i][1][0] == 0);
+        assert(ptr[i][1][1] == 0);
+        assert(ptr[i][2][0] == 0);
+        assert(ptr[i][2][1] == 0);
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[8];
+      int init = 42;
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == init);
+      }
+    }
+    {
+      using Array = int[8][3];
+      int init[3] = {42, 43, 44};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 42);
+        assert(ptr[i][1] == 43);
+        assert(ptr[i][2] == 44);
+      }
+    }
+    {
+      using Array = int[8][3][2];
+      int init[3][2] = {{31, 32}, {41, 42}, {51, 52}};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 31);
+        assert(ptr[i][0][1] == 32);
+        assert(ptr[i][1][0] == 41);
+        assert(ptr[i][1][1] == 42);
+        assert(ptr[i][2][0] == 51);
+        assert(ptr[i][2][1] == 52);
+      }
+    }
+  }
+
+  // Make sure array elements are destroyed in reverse order
+  {
+    // Without passing an initial value
+    {
+      using Array = DestroyInReverseOrder[8];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+        assert(DestroyInReverseOrder::alive() == 8);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+        assert(DestroyInReverseOrder::alive() == 8 * 3);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3][2];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+        assert(DestroyInReverseOrder::alive() == 8 * 3 * 2);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = DestroyInReverseOrder[8];
+      int count = 0;
+      DestroyInReverseOrder init(&count);
+      int init_count = 1;
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+        assert(count == 8 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3];
+      int count = 0;
+      DestroyInReverseOrder init[3] = {&count, &count, &count};
+      int init_count = 3;
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+        assert(count == 8 * 3 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3][2];
+      int count = 0;
+      DestroyInReverseOrder init[3][2] = {{&count, &count}, {&count, &count}, {&count, &count}};
+      int init_count = 3 * 2;
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+        assert(count == 8 * 3 * 2 + init_count);
+      }
+      assert(count == init_count);
+    }
+  }
+
+  // Count the number of copies being made
+  {
+    // Without passing an initial value
+    {
+      using Array = CountCopies[8];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[8][3];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());;
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[8][3][2];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());;
+      assert(CountCopies::copies() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = CountCopies[8];
+      int copies = 0;
+      CountCopies init(&copies);
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+      assert(copies == 8);
+    }
+    {
+      using Array = CountCopies[8][3];
+      int copies = 0;
+      CountCopies init[3] = {&copies, &copies, &copies};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+      assert(copies == 8 * 3);
+    }
+    {
+      using Array = CountCopies[8][3][2];
+      int copies = 0;
+      CountCopies init[3][2] = {{&copies, &copies}, {&copies, &copies}, {&copies, &copies}};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+      assert(copies == 8 * 3 * 2);
+    }
+  }
+
+  // Make sure array elements are aligned properly when the array contains an overaligned type.
+  //
+  // Here, we don't need to test both the with-initial-value and without-initial-value code paths,
+  // since we're just checking the alignment and both are going to use the same code path unless
+  // the implementation is completely crazy.
+  {
+    auto check_alignment = []<class T> {
+      {
+        using Array = T[8];
+        std::shared_ptr ptr = std::allocate_shared<Array>(std::allocator<Array>());
+        for (int i = 0; i < 8; ++i) {
+          T* p = std::addressof(ptr[i]);
+          assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+        }
+      }
+      {
+        using Array = T[8][3];
+        std::shared_ptr ptr = std::allocate_shared<Array>(std::allocator<Array>());
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            T* p = std::addressof(ptr[i][j]);
+            assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+          }
+        }
+      }
+      {
+        using Array = T[8][3][2];
+        std::shared_ptr ptr = std::allocate_shared<Array>(std::allocator<Array>());
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            for (int k = 0; k < 2; ++k) {
+              T* p = std::addressof(ptr[i][j][k]);
+              assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+            }
+          }
+        }
+      }
+    };
+
+    struct Empty { };
+    check_alignment.operator()<Empty>();
+    check_alignment.operator()<OverAligned>();
+    check_alignment.operator()<MaxAligned>();
+
+    // test non corner cases as well while we're at it
+    struct Foo { int i; char c; };
+    check_alignment.operator()<int>();
+    check_alignment.operator()<Foo>();
+  }
+
+  // Make sure that we destroy all the elements constructed so far when an exception
+  // is thrown. Also make sure that we do it in reverse order of construction.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    struct Sentinel : ThrowOnConstruction, DestroyInReverseOrder { };
+
+    // Without passing an initial value
+    {
+      using Array = Sentinel[8];
+      for (int i = 0; i < 8; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = Sentinel[8];
+      for (int i = 0; i < 8; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init;
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 1);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3][2] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3 * 2);
+        }
+      }
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Test with another allocator that's not std::allocator
+  {
+    // Without passing an initial value
+    {
+      using Array = int[8][3];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(min_allocator<Array>());
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 0);
+        assert(ptr[i][1] == 0);
+        assert(ptr[i][2] == 0);
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[8][3];
+      int init[3] = {42, 43, 44};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(min_allocator<Array>(), init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 42);
+        assert(ptr[i][1] == 43);
+        assert(ptr[i][2] == 44);
+      }
+    }
+  }
+
+  // Make sure the version without an initialization argument works even for non-movable types
+  {
+    using Array = NonMovable[8][3];
+    std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>());
+    (void)ptr;
+  }
+
+  // Make sure std::allocate_shared handles badly-behaved types properly
+  {
+    using Array = operator_hijacker[3];
+    std::shared_ptr<Array> p1 = std::allocate_shared<Array>(std::allocator<Array>());
+    std::shared_ptr<Array> p2 = std::allocate_shared<Array>(std::allocator<Array>(), operator_hijacker());
+    assert(p1 != nullptr);
+    assert(p2 != nullptr);
+  }
+
+  // Check that we SFINAE-away for invalid arguments
+  {
+    struct T { };
+    static_assert( CanAllocateShared<T[8], std::allocator<T[8]>>);
+    static_assert( CanAllocateShared<T[8], std::allocator<T[8]>, T>);
+    static_assert(!CanAllocateShared<T[8], std::allocator<T[8]>, T, int>); // too many arguments
+    static_assert(!CanAllocateShared<T[8], std::allocator<T[8]>, int>); // T is not constructible from int
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp
new file mode 100644
index 0000000..5842c47
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.array.unbounded.pass.cpp
@@ -0,0 +1,460 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Aligned deallocation isn't provided before macOS 10.14, and some tests for overaligned types
+// below require that feature.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13}}
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class A>
+// shared_ptr<T> allocate_shared(const A& a, size_t N); // T is U[]
+//
+// template<class T, class A>
+// shared_ptr<T> allocate_shared(const A& a, size_t N, const remove_extent_t<T>& u); // T is U[]
+
+// Ignore error about requesting a large alignment not being ABI compatible with older AIX systems.
+#ifdef _AIX
+# pragma clang diagnostic ignored "-Waix-compat"
+#endif
+
+#include <cassert>
+#include <concepts>
+#include <cstdint> // std::uintptr_t
+#include <memory>
+#include <utility>
+
+#include "min_allocator.h"
+#include "operator_hijacker.h"
+#include "test_macros.h"
+#include "types.h"
+
+template <class T, class ...Args>
+concept CanAllocateShared = requires(Args&& ...args) {
+  { std::allocate_shared<T>(std::forward<Args>(args)...) } -> std::same_as<std::shared_ptr<T>>;
+};
+
+int main(int, char**) {
+  // Check behavior for a zero-sized array
+  {
+    // Without passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 0);
+      assert(ptr != nullptr);
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 0, 42);
+      assert(ptr != nullptr);
+    }
+  }
+
+  // Check behavior for a 1-sized array
+  {
+    // Without passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 1);
+      assert(ptr != nullptr);
+      assert(ptr[0] == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 1, 42);
+      assert(ptr != nullptr);
+      assert(ptr[0] == 42);
+    }
+  }
+
+  // Make sure we initialize elements correctly
+  {
+    // Without passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == 0);
+      }
+    }
+    {
+      using Array = int[][3];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 0);
+        assert(ptr[i][1] == 0);
+        assert(ptr[i][2] == 0);
+      }
+    }
+    {
+      using Array = int[][3][2];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 0);
+        assert(ptr[i][0][1] == 0);
+        assert(ptr[i][1][0] == 0);
+        assert(ptr[i][1][1] == 0);
+        assert(ptr[i][2][0] == 0);
+        assert(ptr[i][2][1] == 0);
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[];
+      int init = 42;
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == init);
+      }
+    }
+    {
+      using Array = int[][3];
+      int init[3] = {42, 43, 44};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 42);
+        assert(ptr[i][1] == 43);
+        assert(ptr[i][2] == 44);
+      }
+    }
+    {
+      using Array = int[][3][2];
+      int init[3][2] = {{31, 32}, {41, 42}, {51, 52}};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 31);
+        assert(ptr[i][0][1] == 32);
+        assert(ptr[i][1][0] == 41);
+        assert(ptr[i][1][1] == 42);
+        assert(ptr[i][2][0] == 51);
+        assert(ptr[i][2][1] == 52);
+      }
+    }
+  }
+
+  // Make sure array elements are destroyed in reverse order
+  {
+    // Without passing an initial value
+    {
+      using Array = DestroyInReverseOrder[];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+        assert(DestroyInReverseOrder::alive() == 8);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+        assert(DestroyInReverseOrder::alive() == 8 * 3);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3][2];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+        assert(DestroyInReverseOrder::alive() == 8 * 3 * 2);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = DestroyInReverseOrder[];
+      int count = 0;
+      DestroyInReverseOrder init(&count);
+      int init_count = 1;
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+        assert(count == 8 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3];
+      int count = 0;
+      DestroyInReverseOrder init[3] = {&count, &count, &count};
+      int init_count = 3;
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+        assert(count == 8 * 3 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3][2];
+      int count = 0;
+      DestroyInReverseOrder init[3][2] = {{&count, &count}, {&count, &count}, {&count, &count}};
+      int init_count = 3 * 2;
+      {
+        std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+        assert(count == 8 * 3 * 2 + init_count);
+      }
+      assert(count == init_count);
+    }
+  }
+
+  // Count the number of copies being made
+  {
+    // Without passing an initial value
+    {
+      using Array = CountCopies[];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[][3];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[][3][2];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+      assert(CountCopies::copies() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = CountCopies[];
+      int copies = 0;
+      CountCopies init(&copies);
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+      assert(copies == 8);
+    }
+    {
+      using Array = CountCopies[][3];
+      int copies = 0;
+      CountCopies init[3] = {&copies, &copies, &copies};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+      assert(copies == 8 * 3);
+    }
+    {
+      using Array = CountCopies[][3][2];
+      int copies = 0;
+      CountCopies init[3][2] = {{&copies, &copies}, {&copies, &copies}, {&copies, &copies}};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+      assert(copies == 8 * 3 * 2);
+    }
+  }
+
+  // Make sure array elements are aligned properly when the array contains an overaligned type.
+  //
+  // Here, we don't need to test both the with-initial-value and without-initial-value code paths,
+  // since we're just checking the alignment and both are going to use the same code path unless
+  // the implementation is completely crazy.
+  {
+    auto check_alignment = []<class T> {
+      {
+        using Array = T[];
+        std::shared_ptr ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+        for (int i = 0; i < 8; ++i) {
+          T* p = std::addressof(ptr[i]);
+          assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+        }
+      }
+      {
+        using Array = T[][3];
+        std::shared_ptr ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            T* p = std::addressof(ptr[i][j]);
+            assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+          }
+        }
+      }
+      {
+        using Array = T[][3][2];
+        std::shared_ptr ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            for (int k = 0; k < 2; ++k) {
+              T* p = std::addressof(ptr[i][j][k]);
+              assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+            }
+          }
+        }
+      }
+    };
+
+    struct Empty { };
+    check_alignment.operator()<Empty>();
+    check_alignment.operator()<OverAligned>();
+    check_alignment.operator()<MaxAligned>();
+
+    // test non corner cases as well while we're at it
+    struct Foo { int i; char c; };
+    check_alignment.operator()<int>();
+    check_alignment.operator()<Foo>();
+  }
+
+  // Make sure that we destroy all the elements constructed so far when an exception
+  // is thrown. Also make sure that we do it in reverse order of construction.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    struct Sentinel : ThrowOnConstruction, DestroyInReverseOrder { };
+
+    // Without passing an initial value
+    {
+      using Array = Sentinel[];
+      for (int i = 0; i < 8; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = Sentinel[];
+      for (int i = 0; i < 8; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init;
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 1);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3][2] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8, init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3 * 2);
+        }
+      }
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Test with another allocator that's not std::allocator
+  {
+    // Without passing an initial value
+    {
+      using Array = int[][3];
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(min_allocator<Array>(), 8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 0);
+        assert(ptr[i][1] == 0);
+        assert(ptr[i][2] == 0);
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[][3];
+      int init[3] = {42, 43, 44};
+      std::shared_ptr<Array> ptr = std::allocate_shared<Array>(min_allocator<Array>(), 8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 42);
+        assert(ptr[i][1] == 43);
+        assert(ptr[i][2] == 44);
+      }
+    }
+  }
+
+  // Make sure the version without an initialization argument works even for non-movable types
+  {
+    using Array = NonMovable[][3];
+    std::shared_ptr<Array> ptr = std::allocate_shared<Array>(std::allocator<Array>(), 8);
+    (void)ptr;
+  }
+
+  // Make sure std::allocate_shared handles badly-behaved types properly
+  {
+    using Array = operator_hijacker[];
+    std::shared_ptr<Array> p1 = std::allocate_shared<Array>(std::allocator<Array>(), 3);
+    std::shared_ptr<Array> p2 = std::allocate_shared<Array>(std::allocator<Array>(), 3, operator_hijacker());
+    assert(p1 != nullptr);
+    assert(p2 != nullptr);
+  }
+
+  // Check that we SFINAE-away for invalid arguments
+  {
+    struct T { };
+    static_assert( CanAllocateShared<T[], std::allocator<T[]>, std::size_t>);
+    static_assert( CanAllocateShared<T[], std::allocator<T[]>, std::size_t, T>);
+    static_assert(!CanAllocateShared<T[], std::allocator<T[]>, std::size_t, T, int>); // too many arguments
+    static_assert(!CanAllocateShared<T[], std::allocator<T[]>, std::size_t, int>); // T not constructible from int
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.explicit_conversion.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.explicit_conversion.pass.cpp
new file mode 100644
index 0000000..446daa1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.explicit_conversion.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure that std::allocate_shared works with an allocator type that is
+// only explicitly convertible from another specialization of itself.
+
+#include <cassert>
+#include <cstddef>
+#include <memory>
+
+template <class T>
+struct ExplicitAllocator {
+    ExplicitAllocator() = default;
+    template <class U>
+    explicit ExplicitAllocator(ExplicitAllocator<U>) { }
+
+    using value_type = T;
+    T* allocate(std::size_t n) { return std::allocator<T>().allocate(n); }
+    void deallocate(T* ptr, std::size_t n) { return std::allocator<T>().deallocate(ptr, n); }
+};
+
+int main(int, char**) {
+    std::shared_ptr<int> ptr = std::allocate_shared<int>(ExplicitAllocator<int>(), 0);
+    (void)ptr;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.pass.cpp
new file mode 100644
index 0000000..ac7a991
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared.pass.cpp
@@ -0,0 +1,193 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class A, class... Args>
+// shared_ptr<T> allocate_shared(const A& a, Args&&... args); // T is not an array
+
+#include <memory>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "min_allocator.h"
+#include "operator_hijacker.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+int new_count = 0;
+
+struct A
+{
+    static int count;
+
+    A(int i, char c) : int_(i), char_(c) {++count;}
+    A(const A& a)
+        : int_(a.int_), char_(a.char_)
+        {++count;}
+    ~A() {--count;}
+
+    int get_int() const {return int_;}
+    char get_char() const {return char_;}
+
+    A* operator& () = delete;
+private:
+    int int_;
+    char char_;
+};
+
+int A::count = 0;
+
+struct Zero
+{
+    static int count;
+    Zero() {++count;}
+    Zero(Zero const &) {++count;}
+    ~Zero() {--count;}
+};
+
+int Zero::count = 0;
+
+struct One
+{
+    static int count;
+    int value;
+    explicit One(int v) : value(v) {++count;}
+    One(One const & o) : value(o.value) {++count;}
+    ~One() {--count;}
+};
+
+int One::count = 0;
+
+
+struct Two
+{
+    static int count;
+    int value;
+    Two(int v, int) : value(v) {++count;}
+    Two(Two const & o) : value(o.value) {++count;}
+    ~Two() {--count;}
+};
+
+int Two::count = 0;
+
+struct Three
+{
+    static int count;
+    int value;
+    Three(int v, int, int) : value(v) {++count;}
+    Three(Three const & o) : value(o.value) {++count;}
+    ~Three() {--count;}
+};
+
+int Three::count = 0;
+
+template<class T>
+struct AllocNoConstruct : std::allocator<T>
+{
+    AllocNoConstruct() = default;
+
+    template <class T1>
+    AllocNoConstruct(AllocNoConstruct<T1>) {}
+
+    template <class T1>
+    struct rebind {
+        typedef AllocNoConstruct<T1> other;
+    };
+
+    void construct(void*) { assert(false); }
+};
+
+template <class Alloc>
+void test()
+{
+    int const bad = -1;
+    {
+    std::shared_ptr<Zero> p = std::allocate_shared<Zero>(Alloc());
+    assert(Zero::count == 1);
+    }
+    assert(Zero::count == 0);
+    {
+    int const i = 42;
+    std::shared_ptr<One> p = std::allocate_shared<One>(Alloc(), i);
+    assert(One::count == 1);
+    assert(p->value == i);
+    }
+    assert(One::count == 0);
+    {
+    int const i = 42;
+    std::shared_ptr<Two> p = std::allocate_shared<Two>(Alloc(), i, bad);
+    assert(Two::count == 1);
+    assert(p->value == i);
+    }
+    assert(Two::count == 0);
+    {
+    int const i = 42;
+    std::shared_ptr<Three> p = std::allocate_shared<Three>(Alloc(), i, bad, bad);
+    assert(Three::count == 1);
+    assert(p->value == i);
+    }
+    assert(Three::count == 0);
+}
+
+int main(int, char**)
+{
+    test<bare_allocator<void> >();
+    test<test_allocator<void> >();
+
+    test_allocator_statistics alloc_stats;
+    {
+    int i = 67;
+    char c = 'e';
+    std::shared_ptr<A> p = std::allocate_shared<A>(test_allocator<A>(54, &alloc_stats), i, c);
+    assert(alloc_stats.alloc_count == 1);
+    assert(A::count == 1);
+    assert(p->get_int() == 67);
+    assert(p->get_char() == 'e');
+    }
+    assert(A::count == 0);
+    assert(alloc_stats.alloc_count == 0);
+    {
+    int i = 67;
+    char c = 'e';
+    std::shared_ptr<A> p = std::allocate_shared<A>(min_allocator<void>(), i, c);
+    assert(A::count == 1);
+    assert(p->get_int() == 67);
+    assert(p->get_char() == 'e');
+    }
+    assert(A::count == 0);
+    {
+    int i = 68;
+    char c = 'f';
+    std::shared_ptr<A> p = std::allocate_shared<A>(bare_allocator<void>(), i, c);
+    assert(A::count == 1);
+    assert(p->get_int() == 68);
+    assert(p->get_char() == 'f');
+    }
+    assert(A::count == 0);
+
+    // Make sure std::allocate_shared handles badly-behaved types properly
+    {
+        std::shared_ptr<operator_hijacker> p1 = std::allocate_shared<operator_hijacker>(min_allocator<operator_hijacker>());
+        std::shared_ptr<operator_hijacker> p2 = std::allocate_shared<operator_hijacker>(min_allocator<operator_hijacker>(), operator_hijacker());
+        assert(p1 != nullptr);
+        assert(p2 != nullptr);
+    }
+
+    // Test that we don't call construct before C++20.
+#if TEST_STD_VER < 20
+    {
+    (void)std::allocate_shared<int>(AllocNoConstruct<int>());
+    }
+#endif // TEST_STD_VER < 20
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp
new file mode 100644
index 0000000..3fa4ce7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_construct.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class A, class... Args>
+// shared_ptr<T> allocate_shared(const A& a, Args&&... args);
+
+// This test checks that allocator_traits::construct is used in allocate_shared
+// as requested in C++20 (via P0674R1).
+
+#include "test_macros.h"
+
+#include <cassert>
+#include <cstdint>
+#include <memory>
+#include <new>
+#include <utility>
+
+static bool construct_called = false;
+static bool destroy_called = false;
+static unsigned allocator_id = 0;
+
+template <class T>
+struct MyAllocator {
+public:
+  typedef T value_type;
+  typedef T* pointer;
+
+  unsigned id = 0;
+
+  MyAllocator() = default;
+  MyAllocator(int i) : id(i) {}
+
+  template <class U>
+  MyAllocator(MyAllocator<U> const& other) : id(other.id){};
+
+  pointer allocate(std::ptrdiff_t n) {
+    return pointer(static_cast<T*>(::operator new(n * sizeof(T))));
+  }
+
+  void deallocate(pointer p, std::ptrdiff_t) { return ::operator delete(p); }
+
+  template <typename ...Args>
+  void construct(T* p, Args&& ...args) {
+    construct_called = true;
+    destroy_called = false;
+    allocator_id = id;
+    ::new (p) T(std::forward<Args>(args)...);
+  }
+
+  void destroy(T* p) {
+    construct_called = false;
+    destroy_called = true;
+    allocator_id = id;
+    p->~T();
+  }
+};
+
+struct Private;
+
+class Factory {
+public:
+  static std::shared_ptr<Private> allocate();
+};
+
+template <class T>
+struct FactoryAllocator;
+
+struct Private {
+  int id;
+
+private:
+  friend FactoryAllocator<Private>;
+  Private(int i) : id(i) {}
+  ~Private() {}
+};
+
+template <class T>
+struct FactoryAllocator : std::allocator<T> {
+  FactoryAllocator() = default;
+
+  template <class T1>
+  FactoryAllocator(FactoryAllocator<T1>) {}
+
+  template <class T1>
+  struct rebind {
+    typedef FactoryAllocator<T1> other;
+  };
+
+  void construct(void* p, int id) { ::new (p) Private(id); }
+  void destroy(Private* p) { p->~Private(); }
+};
+
+std::shared_ptr<Private> Factory::allocate() {
+  FactoryAllocator<Private> factory_alloc;
+  return std::allocate_shared<Private>(factory_alloc, 42);
+}
+
+struct mchar {
+  char c;
+};
+
+struct Foo {
+  int val;
+
+  Foo(int v) : val(v) {}
+
+  Foo(Foo a, Foo b) : val(a.val + b.val) {}
+};
+
+struct Bar {
+  std::max_align_t y;
+};
+
+void test_aligned(void* p, size_t align) {
+  assert(reinterpret_cast<uintptr_t>(p) % align == 0);
+}
+
+int main(int, char**) {
+  {
+    std::shared_ptr<int> p = std::allocate_shared<int>(MyAllocator<int>());
+    assert(construct_called);
+  }
+  assert(destroy_called);
+  {
+    std::shared_ptr<Foo> p =
+        std::allocate_shared<Foo>(MyAllocator<Foo>(), Foo(42), Foo(100));
+    assert(construct_called);
+    assert(p->val == 142);
+  }
+  assert(destroy_called);
+  { // Make sure allocator is copied.
+    std::shared_ptr<int> p = std::allocate_shared<int>(MyAllocator<int>(3));
+    assert(allocator_id == 3);
+
+    allocator_id = 0;
+  }
+  assert(allocator_id == 3);
+
+  {
+    std::shared_ptr<int> p = std::allocate_shared<int>(MyAllocator<int>(), 42);
+    assert(construct_called);
+    assert(*p == 42);
+  }
+  assert(destroy_called);
+
+  { // Make sure allocator is properly re-bound.
+    std::shared_ptr<int> p =
+        std::allocate_shared<int>(MyAllocator<mchar>(), 42);
+    assert(construct_called);
+    assert(*p == 42);
+  }
+  assert(destroy_called);
+
+  {
+    // Make sure that we call the correct allocator::construct. Private has a private constructor
+    // so the construct method must be called on its friend Factory's allocator
+    // (Factory::Allocator).
+    std::shared_ptr<Private> p = Factory().allocate();
+    assert(p->id == 42);
+  }
+
+  {
+    std::shared_ptr<Bar> p;
+    test_aligned(p.get(), alignof(Bar));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_for_overwrite.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_for_overwrite.pass.cpp
new file mode 100644
index 0000000..e69adee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/allocate_shared_for_overwrite.pass.cpp
@@ -0,0 +1,190 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T, class A>
+//   shared_ptr<T> make_shared_for_overwrite(const A& a); // T is not U[]
+//
+// template<class T, class A>
+//   shared_ptr<T> make_shared_for_overwrite(const A& a, size_t N); // T is U[]
+
+#include <cassert>
+#include <concepts>
+#include <cstring>
+#include <memory>
+#include <utility>
+
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+template <class T, class... Args>
+concept HasAllocateSharedForOverwrite =
+    requires(Args&&... args) { std::allocate_shared_for_overwrite<T>(std::forward<Args>(args)...); };
+
+struct Foo {
+  int i;
+};
+
+// non array
+static_assert(!HasAllocateSharedForOverwrite<int>);
+static_assert(!HasAllocateSharedForOverwrite<Foo>);
+static_assert(HasAllocateSharedForOverwrite<int, bare_allocator<void>>);
+static_assert(HasAllocateSharedForOverwrite<Foo, bare_allocator<void>>);
+static_assert(!HasAllocateSharedForOverwrite<int, bare_allocator<void>, std::size_t>);
+static_assert(!HasAllocateSharedForOverwrite<Foo, bare_allocator<void>, std::size_t>);
+
+// bounded array
+static_assert(!HasAllocateSharedForOverwrite<int[2]>);
+static_assert(!HasAllocateSharedForOverwrite<Foo[2]>);
+static_assert(HasAllocateSharedForOverwrite<int[2], bare_allocator<void>>);
+static_assert(HasAllocateSharedForOverwrite<Foo[2], bare_allocator<void>>);
+static_assert(!HasAllocateSharedForOverwrite<int[2], bare_allocator<void>, std::size_t>);
+static_assert(!HasAllocateSharedForOverwrite<Foo[2], bare_allocator<void>, std::size_t>);
+
+// unbounded array
+static_assert(!HasAllocateSharedForOverwrite<int[]>);
+static_assert(!HasAllocateSharedForOverwrite<Foo[]>);
+static_assert(!HasAllocateSharedForOverwrite<int[], bare_allocator<void>>);
+static_assert(!HasAllocateSharedForOverwrite<Foo[], bare_allocator<void>>);
+static_assert(HasAllocateSharedForOverwrite<int[], bare_allocator<void>, std::size_t>);
+static_assert(HasAllocateSharedForOverwrite<Foo[], bare_allocator<void>, std::size_t>);
+
+struct WithDefaultCtor {
+  int i;
+  WithDefaultCtor() : i(42) {}
+};
+
+template <class Alloc>
+void testDefaultConstructor() {
+  // single
+  {
+    std::same_as<std::shared_ptr<WithDefaultCtor>> auto ptr =
+        std::allocate_shared_for_overwrite<WithDefaultCtor>(Alloc{});
+    assert(ptr->i == 42);
+  }
+
+  // bounded array
+  {
+    std::same_as<std::shared_ptr<WithDefaultCtor[2]>> auto ptr =
+        std::allocate_shared_for_overwrite<WithDefaultCtor[2]>(Alloc{});
+    assert(ptr[0].i == 42);
+    assert(ptr[1].i == 42);
+  }
+
+  // unbounded array
+  {
+    std::same_as<std::shared_ptr<WithDefaultCtor[]>> auto ptr =
+        std::allocate_shared_for_overwrite<WithDefaultCtor[]>(Alloc{}, 3);
+    assert(ptr[0].i == 42);
+    assert(ptr[1].i == 42);
+    assert(ptr[2].i == 42);
+  }
+}
+
+void testTypeWithDefaultCtor() {
+  testDefaultConstructor<test_allocator<WithDefaultCtor>>();
+  testDefaultConstructor<min_allocator<WithDefaultCtor>>();
+  testDefaultConstructor<bare_allocator<WithDefaultCtor>>();
+}
+
+void testAllocatorOperationsCalled() {
+  // single
+  {
+    test_allocator_statistics alloc_stats;
+    {
+      [[maybe_unused]] std::same_as<std::shared_ptr<int>> auto ptr =
+          std::allocate_shared_for_overwrite<int>(test_allocator<void>{&alloc_stats});
+      assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+  }
+
+  // bounded array
+  {
+    test_allocator_statistics alloc_stats;
+    {
+      [[maybe_unused]] std::same_as<std::shared_ptr<int[2]>> auto ptr =
+          std::allocate_shared_for_overwrite<int[2]>(test_allocator<void>{&alloc_stats});
+      assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+  }
+
+  // unbounded array
+  {
+    test_allocator_statistics alloc_stats;
+    {
+      [[maybe_unused]] std::same_as<std::shared_ptr<int[]>> auto ptr =
+          std::allocate_shared_for_overwrite<int[]>(test_allocator<void>{&alloc_stats}, 3);
+      assert(alloc_stats.alloc_count == 1);
+    }
+    assert(alloc_stats.alloc_count == 0);
+  }
+}
+
+template <class T>
+struct AllocatorWithPattern {
+  constexpr static char pattern = 0xDE;
+
+  using value_type = T;
+
+  AllocatorWithPattern() = default;
+
+  template <class U>
+  AllocatorWithPattern(AllocatorWithPattern<U>) noexcept {}
+
+  T* allocate(std::size_t n) {
+    void* ptr = ::operator new(n * sizeof(T));
+    for (std::size_t i = 0; i < n * sizeof(T); ++i) {
+      *(reinterpret_cast<char*>(ptr) + i) = pattern;
+    }
+    return static_cast<T*>(ptr);
+  }
+
+  void deallocate(T* p, std::size_t) { return ::operator delete(static_cast<void*>(p)); }
+};
+
+void testNotValueInitialized() {
+  // single int
+  {
+    std::same_as<std::shared_ptr<int>> decltype(auto) ptr =
+        std::allocate_shared_for_overwrite<int>(AllocatorWithPattern<int>{});
+    assert(*(reinterpret_cast<char*>(ptr.get())) == AllocatorWithPattern<int>::pattern);
+  }
+
+  // bounded array int[N]
+  {
+    std::same_as<std::shared_ptr<int[2]>> decltype(auto) ptr =
+        std::allocate_shared_for_overwrite<int[2]>(AllocatorWithPattern<int>{});
+    assert(*(reinterpret_cast<char*>(&ptr[0])) == AllocatorWithPattern<int>::pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[1])) == AllocatorWithPattern<int>::pattern);
+  }
+
+  // unbounded array int[]
+  {
+    std::same_as<std::shared_ptr<int[]>> decltype(auto) ptr =
+        std::allocate_shared_for_overwrite<int[]>(AllocatorWithPattern<int>{}, 3);
+    assert(*(reinterpret_cast<char*>(&ptr[0])) == AllocatorWithPattern<int>::pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[1])) == AllocatorWithPattern<int>::pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[2])) == AllocatorWithPattern<int>::pattern);
+  }
+}
+
+void test() {
+  testTypeWithDefaultCtor();
+  testAllocatorOperationsCalled();
+  testNotValueInitialized();
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp
new file mode 100644
index 0000000..20fa508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.bounded.pass.cpp
@@ -0,0 +1,390 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Aligned deallocation isn't provided before macOS 10.14, and some tests for overaligned types
+// below require that feature.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13}}
+
+// <memory>
+
+// shared_ptr
+
+// template<class T>
+// shared_ptr<T> make_shared(); // T is U[N]
+//
+// template<class T>
+// shared_ptr<T> make_shared(const remove_extent_t<T>& u); // T is U[N]
+
+#include <cassert>
+#include <concepts>
+#include <cstdint> // std::uintptr_t
+#include <memory>
+#include <utility>
+
+#include "operator_hijacker.h"
+#include "types.h"
+
+template <class T, class ...Args>
+concept CanMakeShared = requires(Args&& ...args) {
+  { std::make_shared<T>(std::forward<Args>(args)...) } -> std::same_as<std::shared_ptr<T>>;
+};
+
+int main(int, char**) {
+  // Make sure we initialize elements correctly
+  {
+    // Without passing an initial value
+    {
+      using Array = int[8];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>();
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == 0);
+      }
+    }
+    {
+      using Array = int[8][3];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>();
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 0);
+        assert(ptr[i][1] == 0);
+        assert(ptr[i][2] == 0);
+      }
+    }
+    {
+      using Array = int[8][3][2];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>();
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 0);
+        assert(ptr[i][0][1] == 0);
+        assert(ptr[i][1][0] == 0);
+        assert(ptr[i][1][1] == 0);
+        assert(ptr[i][2][0] == 0);
+        assert(ptr[i][2][1] == 0);
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[8];
+      int init = 42;
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == init);
+      }
+    }
+    {
+      using Array = int[8][3];
+      int init[3] = {42, 43, 44};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 42);
+        assert(ptr[i][1] == 43);
+        assert(ptr[i][2] == 44);
+      }
+    }
+    {
+      using Array = int[8][3][2];
+      int init[3][2] = {{31, 32}, {41, 42}, {51, 52}};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 31);
+        assert(ptr[i][0][1] == 32);
+        assert(ptr[i][1][0] == 41);
+        assert(ptr[i][1][1] == 42);
+        assert(ptr[i][2][0] == 51);
+        assert(ptr[i][2][1] == 52);
+      }
+    }
+  }
+
+  // Make sure array elements are destroyed in reverse order
+  {
+    // Without passing an initial value
+    {
+      using Array = DestroyInReverseOrder[8];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>();
+        assert(DestroyInReverseOrder::alive() == 8);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>();
+        assert(DestroyInReverseOrder::alive() == 8 * 3);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3][2];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>();
+        assert(DestroyInReverseOrder::alive() == 8 * 3 * 2);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = DestroyInReverseOrder[8];
+      int count = 0;
+      DestroyInReverseOrder init(&count);
+      int init_count = 1;
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+        assert(count == 8 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3];
+      int count = 0;
+      DestroyInReverseOrder init[3] = {&count, &count, &count};
+      int init_count = 3;
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+        assert(count == 8 * 3 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[8][3][2];
+      int count = 0;
+      DestroyInReverseOrder init[3][2] = {{&count, &count}, {&count, &count}, {&count, &count}};
+      int init_count = 3 * 2;
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+        assert(count == 8 * 3 * 2 + init_count);
+      }
+      assert(count == init_count);
+    }
+  }
+
+  // Count the number of copies being made
+  {
+    // Without passing an initial value
+    {
+      using Array = CountCopies[8];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::make_shared<Array>();
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[8][3];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::make_shared<Array>();
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[8][3][2];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::make_shared<Array>();
+      assert(CountCopies::copies() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = CountCopies[8];
+      int copies = 0;
+      CountCopies init(&copies);
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+      assert(copies == 8);
+    }
+    {
+      using Array = CountCopies[8][3];
+      int copies = 0;
+      CountCopies init[3] = {&copies, &copies, &copies};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+      assert(copies == 8 * 3);
+    }
+    {
+      using Array = CountCopies[8][3][2];
+      int copies = 0;
+      CountCopies init[3][2] = {{&copies, &copies}, {&copies, &copies}, {&copies, &copies}};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+      assert(copies == 8 * 3 * 2);
+    }
+  }
+
+  // Make sure array elements are aligned properly when the array contains an overaligned type.
+  //
+  // Here, we don't need to test both the with-initial-value and without-initial-value code paths,
+  // since we're just checking the alignment and both are going to use the same code path unless
+  // the implementation is completely crazy.
+  {
+    auto check_alignment = []<class T> {
+      {
+        using Array = T[8];
+        std::shared_ptr ptr = std::make_shared<Array>();
+        for (int i = 0; i < 8; ++i) {
+          T* p = std::addressof(ptr[i]);
+          assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+        }
+      }
+      {
+        using Array = T[8][3];
+        std::shared_ptr ptr = std::make_shared<Array>();
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            T* p = std::addressof(ptr[i][j]);
+            assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+          }
+        }
+      }
+      {
+        using Array = T[8][3][2];
+        std::shared_ptr ptr = std::make_shared<Array>();
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            for (int k = 0; k < 2; ++k) {
+              T* p = std::addressof(ptr[i][j][k]);
+              assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+            }
+          }
+        }
+      }
+    };
+
+    struct Empty { };
+    check_alignment.operator()<Empty>();
+    check_alignment.operator()<OverAligned>();
+    check_alignment.operator()<MaxAligned>();
+
+    // test non corner cases as well while we're at it
+    struct Foo { int i; char c; };
+    check_alignment.operator()<int>();
+    check_alignment.operator()<Foo>();
+  }
+
+  // Make sure that we destroy all the elements constructed so far when an exception
+  // is thrown. Also make sure that we do it in reverse order of construction.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    struct Sentinel : ThrowOnConstruction, DestroyInReverseOrder { };
+
+    // Without passing an initial value
+    {
+      using Array = Sentinel[8];
+      for (int i = 0; i < 8; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>();
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>();
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>();
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = Sentinel[8];
+      for (int i = 0; i < 8; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init;
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 1);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[8][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3][2] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3 * 2);
+        }
+      }
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Make sure the version without an initialization argument works even for non-movable types
+  {
+    using Array = NonMovable[8][3];
+    std::shared_ptr<Array> ptr = std::make_shared<Array>();
+    (void)ptr;
+  }
+
+  // Make sure std::make_shared handles badly-behaved types properly
+  {
+    using Array = operator_hijacker[3];
+    std::shared_ptr<Array> p1 = std::make_shared<Array>();
+    std::shared_ptr<Array> p2 = std::make_shared<Array>(operator_hijacker());
+    assert(p1 != nullptr);
+    assert(p2 != nullptr);
+  }
+
+  // Check that we SFINAE-away for invalid arguments
+  {
+    struct T { };
+    static_assert( CanMakeShared<T[8]>);
+    static_assert( CanMakeShared<T[8], T>);
+    static_assert(!CanMakeShared<T[8], T, int>); // too many arguments
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp
new file mode 100644
index 0000000..44365b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.array.unbounded.pass.cpp
@@ -0,0 +1,431 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Aligned deallocation isn't provided before macOS 10.14, and some tests for overaligned types
+// below require that feature.
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13}}
+
+// <memory>
+
+// shared_ptr
+
+// template<class T> shared_ptr<T> make_shared(size_t N); // T is U[]
+//
+// template<class T>
+// shared_ptr<T> make_shared(size_t N, const remove_extent_t<T>& u); // T is U[]
+
+// Ignore error about requesting a large alignment not being ABI compatible with older AIX systems.
+#ifdef _AIX
+# pragma clang diagnostic ignored "-Waix-compat"
+#endif
+
+#include <cassert>
+#include <concepts>
+#include <cstdint> // std::uintptr_t
+#include <memory>
+#include <utility>
+
+#include "operator_hijacker.h"
+#include "test_macros.h"
+#include "types.h"
+
+template <class T, class ...Args>
+concept CanMakeShared = requires(Args&& ...args) {
+  { std::make_shared<T>(std::forward<Args>(args)...) } -> std::same_as<std::shared_ptr<T>>;
+};
+
+int main(int, char**) {
+  // Check behavior for a zero-sized array
+  {
+    // Without passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(0);
+      assert(ptr != nullptr);
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(0, 42);
+      assert(ptr != nullptr);
+    }
+  }
+
+  // Check behavior for a 1-sized array
+  {
+    // Without passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(1);
+      assert(ptr != nullptr);
+      assert(ptr[0] == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(1, 42);
+      assert(ptr != nullptr);
+      assert(ptr[0] == 42);
+    }
+  }
+
+  // Make sure we initialize elements correctly
+  {
+    // Without passing an initial value
+    {
+      using Array = int[];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == 0);
+      }
+    }
+    {
+      using Array = int[][3];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 0);
+        assert(ptr[i][1] == 0);
+        assert(ptr[i][2] == 0);
+      }
+    }
+    {
+      using Array = int[][3][2];
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 0);
+        assert(ptr[i][0][1] == 0);
+        assert(ptr[i][1][0] == 0);
+        assert(ptr[i][1][1] == 0);
+        assert(ptr[i][2][0] == 0);
+        assert(ptr[i][2][1] == 0);
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = int[];
+      int init = 42;
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i] == init);
+      }
+    }
+    {
+      using Array = int[][3];
+      int init[3] = {42, 43, 44};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0] == 42);
+        assert(ptr[i][1] == 43);
+        assert(ptr[i][2] == 44);
+      }
+    }
+    {
+      using Array = int[][3][2];
+      int init[3][2] = {{31, 32}, {41, 42}, {51, 52}};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+      for (unsigned i = 0; i < 8; ++i) {
+        assert(ptr[i][0][0] == 31);
+        assert(ptr[i][0][1] == 32);
+        assert(ptr[i][1][0] == 41);
+        assert(ptr[i][1][1] == 42);
+        assert(ptr[i][2][0] == 51);
+        assert(ptr[i][2][1] == 52);
+      }
+    }
+  }
+
+  // Make sure array elements are destroyed in reverse order
+  {
+    // Without passing an initial value
+    {
+      using Array = DestroyInReverseOrder[];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+        assert(DestroyInReverseOrder::alive() == 8);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+        assert(DestroyInReverseOrder::alive() == 8 * 3);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3][2];
+      DestroyInReverseOrder::reset();
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+        assert(DestroyInReverseOrder::alive() == 8 * 3 * 2);
+      }
+      assert(DestroyInReverseOrder::alive() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = DestroyInReverseOrder[];
+      int count = 0;
+      DestroyInReverseOrder init(&count);
+      int init_count = 1;
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+        assert(count == 8 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3];
+      int count = 0;
+      DestroyInReverseOrder init[3] = {&count, &count, &count};
+      int init_count = 3;
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+        assert(count == 8 * 3 + init_count);
+      }
+      assert(count == init_count);
+    }
+    {
+      using Array = DestroyInReverseOrder[][3][2];
+      int count = 0;
+      DestroyInReverseOrder init[3][2] = {{&count, &count}, {&count, &count}, {&count, &count}};
+      int init_count = 3 * 2;
+      {
+        std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+        assert(count == 8 * 3 * 2 + init_count);
+      }
+      assert(count == init_count);
+    }
+  }
+
+  // Count the number of copies being made
+  {
+    // Without passing an initial value
+    {
+      using Array = CountCopies[];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[][3];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+      assert(CountCopies::copies() == 0);
+    }
+    {
+      using Array = CountCopies[][3][2];
+      CountCopies::reset();
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+      assert(CountCopies::copies() == 0);
+    }
+
+    // Passing an initial value
+    {
+      using Array = CountCopies[];
+      int copies = 0;
+      CountCopies init(&copies);
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+      assert(copies == 8);
+    }
+    {
+      using Array = CountCopies[][3];
+      int copies = 0;
+      CountCopies init[3] = {&copies, &copies, &copies};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+      assert(copies == 8 * 3);
+    }
+    {
+      using Array = CountCopies[][3][2];
+      int copies = 0;
+      CountCopies init[3][2] = {{&copies, &copies}, {&copies, &copies}, {&copies, &copies}};
+      std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+      assert(copies == 8 * 3 * 2);
+    }
+  }
+
+  // Make sure array elements are aligned properly when the array contains an overaligned type.
+  //
+  // Here, we don't need to test both the with-initial-value and without-initial-value code paths,
+  // since we're just checking the alignment and both are going to use the same code path unless
+  // the implementation is completely crazy.
+  {
+    auto check_alignment = []<class T> {
+      {
+        using Array = T[];
+        std::shared_ptr ptr = std::make_shared<Array>(8);
+        for (int i = 0; i < 8; ++i) {
+          T* p = std::addressof(ptr[i]);
+          assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+        }
+      }
+      {
+        using Array = T[][3];
+        std::shared_ptr ptr = std::make_shared<Array>(8);
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            T* p = std::addressof(ptr[i][j]);
+            assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+          }
+        }
+      }
+      {
+        using Array = T[][3][2];
+        std::shared_ptr ptr = std::make_shared<Array>(8);
+        for (int i = 0; i < 8; ++i) {
+          for (int j = 0; j < 3; ++j) {
+            for (int k = 0; k < 2; ++k) {
+              T* p = std::addressof(ptr[i][j][k]);
+              assert(reinterpret_cast<std::uintptr_t>(p) % alignof(T) == 0);
+            }
+          }
+        }
+      }
+    };
+
+    struct Empty { };
+    check_alignment.operator()<Empty>();
+    check_alignment.operator()<OverAligned>();
+    check_alignment.operator()<MaxAligned>();
+
+    // test non corner cases as well while we're at it
+    struct Foo { int i; char c; };
+    check_alignment.operator()<int>();
+    check_alignment.operator()<Foo>();
+  }
+
+  // Make sure that we destroy all the elements constructed so far when an exception
+  // is thrown. Also make sure that we do it in reverse order of construction.
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    struct Sentinel : ThrowOnConstruction, DestroyInReverseOrder { };
+
+    // Without passing an initial value
+    {
+      using Array = Sentinel[];
+      for (int i = 0; i < 8; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        ThrowOnConstruction::throw_after(i);
+        DestroyInReverseOrder::reset();
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 0);
+        }
+      }
+    }
+
+    // Passing an initial value
+    {
+      using Array = Sentinel[];
+      for (int i = 0; i < 8; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init;
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 1);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3];
+      for (int i = 0; i < 8 * 3; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3);
+        }
+      }
+    }
+    {
+      using Array = Sentinel[][3][2];
+      for (int i = 0; i < 8 * 3 * 2; ++i) {
+        DestroyInReverseOrder::reset();
+        ThrowOnConstruction::reset();
+        Sentinel init[3][2] = {};
+        ThrowOnConstruction::throw_after(i);
+        try {
+          std::shared_ptr<Array> ptr = std::make_shared<Array>(8, init);
+          assert(false);
+        } catch (ThrowOnConstruction::exception const&) {
+          assert(DestroyInReverseOrder::alive() == 3 * 2);
+        }
+      }
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Make sure the version without an initialization argument works even for non-movable types
+  {
+    using Array = NonMovable[][3];
+    std::shared_ptr<Array> ptr = std::make_shared<Array>(8);
+    (void)ptr;
+  }
+
+    // Make sure std::make_shared handles badly-behaved types properly
+    {
+      using Array = operator_hijacker[];
+      std::shared_ptr<Array> p1 = std::make_shared<Array>(3);
+      std::shared_ptr<Array> p2 = std::make_shared<Array>(3, operator_hijacker());
+      assert(p1 != nullptr);
+      assert(p2 != nullptr);
+    }
+
+  // Check that we SFINAE-away for invalid arguments
+  {
+    struct T { };
+    static_assert( CanMakeShared<T[], std::size_t>);
+    static_assert( CanMakeShared<T[], std::size_t, T>);
+    static_assert(!CanMakeShared<T[], std::size_t, T, int>); // too many arguments
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.pass.cpp
new file mode 100644
index 0000000..23a904f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class... Args>
+// shared_ptr<T> make_shared(Args&&... args); // T is not an array
+
+#include <memory>
+#include <cassert>
+
+#include "count_new.h"
+#include "operator_hijacker.h"
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A(int i, char c) : int_(i), char_(c) {++count;}
+    A(const A& a)
+        : int_(a.int_), char_(a.char_)
+        {++count;}
+    ~A() {--count;}
+
+    int get_int() const {return int_;}
+    char get_char() const {return char_;}
+
+    A* operator& () = delete;
+
+private:
+    int int_;
+    char char_;
+};
+
+int A::count = 0;
+
+
+struct Foo
+{
+    Foo() = default;
+    virtual ~Foo() = default;
+};
+
+#ifdef _LIBCPP_VERSION
+struct Result {};
+static Result theFunction() { return Result(); }
+static int resultDeletorCount;
+static void resultDeletor(Result (*pf)()) {
+  assert(pf == theFunction);
+  ++resultDeletorCount;
+}
+
+void test_pointer_to_function() {
+    { // https://llvm.org/PR27566
+      std::shared_ptr<Result()> x(&theFunction, &resultDeletor);
+      std::shared_ptr<Result()> y(theFunction, resultDeletor);
+    }
+    assert(resultDeletorCount == 2);
+}
+#else // _LIBCPP_VERSION
+void test_pointer_to_function() {}
+#endif // _LIBCPP_VERSION
+
+template <typename T>
+void test(const T &t0)
+{
+    {
+      T t1 = t0;
+      std::shared_ptr<T> p0 = std::make_shared<T>(t0);
+      std::shared_ptr<T> p1 = std::make_shared<T>(t1);
+      assert(*p0 == t0);
+      assert(*p1 == t1);
+    }
+
+    {
+      const T t1 = t0;
+      std::shared_ptr<const T> p0 = std::make_shared<const T>(t0);
+      std::shared_ptr<const T> p1 = std::make_shared<const T>(t1);
+      assert(*p0 == t0);
+      assert(*p1 == t1);
+    }
+}
+
+int main(int, char**)
+{
+    int nc = globalMemCounter.outstanding_new;
+    {
+    int i = 67;
+    char c = 'e';
+    std::shared_ptr<A> p = std::make_shared<A>(i, c);
+    assert(globalMemCounter.checkOutstandingNewEq(nc+1));
+    assert(A::count == 1);
+    assert(p->get_int() == 67);
+    assert(p->get_char() == 'e');
+    }
+
+    { // https://llvm.org/PR24137
+    std::shared_ptr<Foo> p1       = std::make_shared<Foo>();
+    assert(p1.get());
+    std::shared_ptr<const Foo> p2 = std::make_shared<const Foo>();
+    assert(p2.get());
+    }
+
+    test_pointer_to_function();
+
+#if TEST_STD_VER >= 11
+    nc = globalMemCounter.outstanding_new;
+    {
+    char c = 'e';
+    std::shared_ptr<A> p = std::make_shared<A>(67, c);
+    assert(globalMemCounter.checkOutstandingNewEq(nc+1));
+    assert(A::count == 1);
+    assert(p->get_int() == 67);
+    assert(p->get_char() == 'e');
+    }
+#endif
+    assert(A::count == 0);
+
+    // Make sure std::make_shared handles badly-behaved types properly
+    {
+      std::shared_ptr<operator_hijacker> p1 = std::make_shared<operator_hijacker>();
+      std::shared_ptr<operator_hijacker> p2 = std::make_shared<operator_hijacker>(operator_hijacker());
+      assert(p1 != nullptr);
+      assert(p2 != nullptr);
+    }
+
+    test<bool>(true);
+    test<int>(3);
+    test<double>(5.0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.private.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.private.compile.fail.cpp
new file mode 100644
index 0000000..fec160a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared.private.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T, class... Args>
+// shared_ptr<T> make_shared(Args&&... args);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct S {
+private:
+   S () {};  // ctor is private
+};
+
+int main(int, char**)
+{
+    std::shared_ptr<S> p = std::make_shared<S>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared_for_overwrite.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared_for_overwrite.pass.cpp
new file mode 100644
index 0000000..690a334
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/make_shared_for_overwrite.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: sanitizer-new-delete
+
+// template<class T>
+//   shared_ptr<T> make_shared_for_overwrite(); // T is not U[]
+//
+// template<class T>
+//   shared_ptr<T> make_shared_for_overwrite(size_t N); // T is U[]
+
+#include <cassert>
+#include <concepts>
+#include <cstring>
+#include <memory>
+#include <stdlib.h>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T, class... Args>
+concept HasMakeSharedForOverwrite =
+    requires(Args&&... args) { std::make_shared_for_overwrite<T>(std::forward<Args>(args)...); };
+
+struct Foo {
+  int i;
+};
+
+// non array
+static_assert(HasMakeSharedForOverwrite<int>);
+static_assert(HasMakeSharedForOverwrite<Foo>);
+static_assert(!HasMakeSharedForOverwrite<int, int>);
+static_assert(!HasMakeSharedForOverwrite<Foo, Foo>);
+
+// bounded array
+static_assert(HasMakeSharedForOverwrite<int[2]>);
+static_assert(!HasMakeSharedForOverwrite<int[2], size_t>);
+static_assert(!HasMakeSharedForOverwrite<int[2], int>);
+static_assert(!HasMakeSharedForOverwrite<int[2], int, int>);
+static_assert(HasMakeSharedForOverwrite<Foo[2]>);
+static_assert(!HasMakeSharedForOverwrite<Foo[2], size_t>);
+static_assert(!HasMakeSharedForOverwrite<Foo[2], int>);
+static_assert(!HasMakeSharedForOverwrite<Foo[2], int, int>);
+
+// unbounded array
+static_assert(HasMakeSharedForOverwrite<int[], size_t>);
+static_assert(HasMakeSharedForOverwrite<Foo[], size_t>);
+static_assert(!HasMakeSharedForOverwrite<int[]>);
+static_assert(!HasMakeSharedForOverwrite<Foo[]>);
+static_assert(!HasMakeSharedForOverwrite<int[], size_t, int>);
+static_assert(!HasMakeSharedForOverwrite<Foo[], size_t, int>);
+
+constexpr char pattern = 0xDE;
+
+void* operator new(std::size_t count) {
+  void* ptr = malloc(count);
+  for (std::size_t i = 0; i < count; ++i) {
+    *(reinterpret_cast<char*>(ptr) + i) = pattern;
+  }
+  return ptr;
+}
+
+void* operator new[](std::size_t count) { return ::operator new(count); }
+
+void operator delete(void* ptr) noexcept { free(ptr); }
+
+void operator delete[](void* ptr) noexcept { ::operator delete(ptr); }
+
+struct WithDefaultConstructor {
+  int i;
+  constexpr WithDefaultConstructor() : i(5) {}
+};
+
+bool test() {
+  // single int
+  {
+    std::same_as<std::shared_ptr<int>> decltype(auto) ptr = std::make_shared_for_overwrite<int>();
+    assert(*(reinterpret_cast<char*>(ptr.get())) == pattern);
+  }
+
+  // bounded array int[N]
+  {
+    std::same_as<std::shared_ptr<int[2]>> decltype(auto) ptr = std::make_shared_for_overwrite<int[2]>();
+    assert(*(reinterpret_cast<char*>(&ptr[0])) == pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[1])) == pattern);
+  }
+
+  // unbounded array int[]
+  {
+    std::same_as<std::shared_ptr<int[]>> decltype(auto) ptr = std::make_shared_for_overwrite<int[]>(3);
+    assert(*(reinterpret_cast<char*>(&ptr[0])) == pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[1])) == pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[2])) == pattern);
+  }
+
+  // single with default constructor
+  {
+    std::same_as<std::shared_ptr<WithDefaultConstructor>> decltype(auto) ptr =
+        std::make_shared_for_overwrite<WithDefaultConstructor>();
+    assert(ptr->i == 5);
+  }
+
+  // bounded array with default constructor
+  {
+    std::same_as<std::shared_ptr<WithDefaultConstructor[2]>> decltype(auto) ptr =
+        std::make_shared_for_overwrite<WithDefaultConstructor[2]>();
+    assert(ptr[0].i == 5);
+    assert(ptr[1].i == 5);
+  }
+
+  // unbounded array with default constructor
+  {
+    std::same_as<std::shared_ptr<WithDefaultConstructor[]>> decltype(auto) ptrs =
+        std::make_shared_for_overwrite<WithDefaultConstructor[]>(3);
+    assert(ptrs[0].i == 5);
+    assert(ptrs[1].i == 5);
+    assert(ptrs[2].i == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/types.h b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/types.h
new file mode 100644
index 0000000..7cd6523
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.create/types.h
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_STD_UTILITIES_MEMORY_UTIL_SMARTPTR_SHARED_CREATE_TYPES_H
+#define TEST_STD_UTILITIES_MEMORY_UTIL_SMARTPTR_SHARED_CREATE_TYPES_H
+
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct DestroyInReverseOrder {
+  static void reset() { global_count_ = 0; }
+  static int alive() { return global_count_; }
+
+  DestroyInReverseOrder()
+    : DestroyInReverseOrder(&global_count_)
+  { }
+
+  constexpr DestroyInReverseOrder(int* count)
+    : count_(count), value_(*count)
+  { ++*count_; }
+
+  constexpr DestroyInReverseOrder(DestroyInReverseOrder const& other)
+    : count_(other.count_), value_(*other.count_)
+  { ++*count_; }
+
+  constexpr int value() const { return value_; }
+
+  // Ensure that we destroy these objects in the reverse order as they were created.
+  constexpr ~DestroyInReverseOrder() {
+    --*count_;
+    assert(*count_ == value_);
+  }
+
+private:
+  int* count_;
+  int value_;
+  static int global_count_;
+};
+
+int DestroyInReverseOrder::global_count_ = 0;
+
+struct NonMovable {
+  NonMovable() = default;
+  NonMovable(NonMovable&&) = delete;
+};
+
+struct CountCopies {
+  static void reset() { global_count_ = 0; }
+  static int copies() { return global_count_; }
+
+  constexpr CountCopies() : copies_(&global_count_) { }
+  constexpr CountCopies(int* counter) : copies_(counter) { }
+  constexpr CountCopies(CountCopies const& other) : copies_(other.copies_) { ++*copies_; }
+
+private:
+  int* copies_;
+  static int global_count_;
+};
+
+int CountCopies::global_count_ = 0;
+
+struct alignas(alignof(std::max_align_t) * 2) OverAligned { };
+
+struct MaxAligned {
+  std::max_align_t foo;
+};
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct ThrowOnConstruction {
+  struct exception : std::exception { };
+
+  ThrowOnConstruction() { on_construct(); }
+  ThrowOnConstruction(ThrowOnConstruction const&) { on_construct(); }
+
+  static void reset() { throw_after_ = -1; }
+  static void throw_after(int n) { throw_after_ = n; }
+
+private:
+  static int throw_after_;
+  void on_construct() {
+    if (throw_after_ == 0)
+      throw exception{};
+
+    if (throw_after_ != -1)
+      --throw_after_;
+  }
+};
+
+int ThrowOnConstruction::throw_after_ = -1;
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+#endif // TEST_STD_UTILITIES_MEMORY_UTIL_SMARTPTR_SHARED_CREATE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.dest/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.dest/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.dest/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.io/io.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.io/io.pass.cpp
new file mode 100644
index 0000000..34706aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.io/io.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// <memory>
+
+// shared_ptr
+
+// template<class CharT, class Traits, class Y>
+//   basic_ostream<CharT, Traits>&
+//   operator<<(basic_ostream<CharT, Traits>& os, shared_ptr<Y> const& p);
+
+#include <memory>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::shared_ptr<int> p(new int(3));
+    std::ostringstream os;
+    assert(os.str().empty());
+    os << p;
+    assert(!os.str().empty());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset.pass.cpp
new file mode 100644
index 0000000..0d175d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// void reset();
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<B> p(new B);
+        p.reset();
+        assert(A::count == 0);
+        assert(B::count == 0);
+        assert(p.use_count() == 0);
+        assert(p.get() == 0);
+    }
+    assert(A::count == 0);
+    {
+        std::shared_ptr<B> p;
+        p.reset();
+        assert(A::count == 0);
+        assert(B::count == 0);
+        assert(p.use_count() == 0);
+        assert(p.get() == 0);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer.pass.cpp
new file mode 100644
index 0000000..d764e8a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y> void reset(Y* p);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<B> p(new B);
+        A* ptr = new A;
+        p.reset(ptr);
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+    assert(A::count == 0);
+    {
+        std::shared_ptr<B> p;
+        A* ptr = new A;
+        p.reset(ptr);
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<const A[]> p;
+        A* ptr = new A[8];
+        p.reset(ptr);
+        assert(A::count == 8);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer_deleter.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer_deleter.pass.cpp
new file mode 100644
index 0000000..14c336b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer_deleter.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y, class D> void reset(Y* p, D d);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<B> p(new B);
+        A* ptr = new A;
+        p.reset(ptr, test_deleter<A>(3));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+    {
+        std::shared_ptr<B> p;
+        A* ptr = new A;
+        p.reset(ptr, test_deleter<A>(3));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 1);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 2);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<const A[]> p;
+        A* ptr = new A[8];
+        p.reset(ptr, CDeleter<A[]>());
+        assert(A::count == 8);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer_deleter_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer_deleter_allocator.pass.cpp
new file mode 100644
index 0000000..a6ea07e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset_pointer_deleter_allocator.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class Y, class D, class A> void reset(Y* p, D d, A a);
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "test_allocator.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    test_allocator_statistics alloc_stats;
+    {
+        std::shared_ptr<B> p(new B);
+        A* ptr = new A;
+        p.reset(ptr, test_deleter<A>(3), test_allocator<A>(4, &alloc_stats));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 0);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+        assert(alloc_stats.count == 1);
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 1);
+    assert(alloc_stats.count == 0);
+    assert(alloc_stats.alloc_count == 0);
+    {
+        std::shared_ptr<B> p;
+        A* ptr = new A;
+        p.reset(ptr, test_deleter<A>(3), test_allocator<A>(4, &alloc_stats));
+        assert(A::count == 1);
+        assert(B::count == 1);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+        assert(test_deleter<A>::count == 1);
+        assert(test_deleter<A>::dealloc_count == 1);
+#ifndef TEST_HAS_NO_RTTI
+        test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
+        assert(d);
+        assert(d->state() == 3);
+#endif
+        assert(alloc_stats.count == 1);
+        assert(alloc_stats.alloc_count == 1);
+    }
+    assert(A::count == 0);
+    assert(test_deleter<A>::count == 0);
+    assert(test_deleter<A>::dealloc_count == 2);
+    assert(alloc_stats.count == 0);
+    assert(alloc_stats.alloc_count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<const A[]> p;
+        A* ptr = new A[8];
+        p.reset(ptr, CDeleter<A[]>(), test_allocator<A[]>());
+        assert(A::count == 8);
+        assert(p.use_count() == 1);
+        assert(p.get() == ptr);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/swap.pass.cpp
new file mode 100644
index 0000000..5070dbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/swap.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// void swap(shared_ptr& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        A* ptr1 = new A;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1(ptr1);
+        {
+            std::shared_ptr<A> p2(ptr2);
+            p1.swap(p2);
+            assert(p1.use_count() == 1);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 1);
+            assert(p2.get() == ptr1);
+            assert(A::count == 2);
+        }
+        assert(p1.use_count() == 1);
+        assert(p1.get() == ptr2);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = new A;
+        A* ptr2 = 0;
+        std::shared_ptr<A> p1(ptr1);
+        {
+            std::shared_ptr<A> p2;
+            p1.swap(p2);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 1);
+            assert(p2.get() == ptr1);
+            assert(A::count == 1);
+        }
+        assert(p1.use_count() == 0);
+        assert(p1.get() == ptr2);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = 0;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1;
+        {
+            std::shared_ptr<A> p2(ptr2);
+            p1.swap(p2);
+            assert(p1.use_count() == 1);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 0);
+            assert(p2.get() == ptr1);
+            assert(A::count == 1);
+        }
+        assert(p1.use_count() == 1);
+        assert(p1.get() == ptr2);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = 0;
+        A* ptr2 = 0;
+        std::shared_ptr<A> p1;
+        {
+            std::shared_ptr<A> p2;
+            p1.swap(p2);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 0);
+            assert(p2.get() == ptr1);
+            assert(A::count == 0);
+        }
+        assert(p1.use_count() == 0);
+        assert(p1.get() == ptr2);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/arrow.pass.cpp
new file mode 100644
index 0000000..b968bd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/arrow.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// T* operator->() const;
+
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<std::pair<int, int> > p(new std::pair<int, int>(3, 4));
+    assert(p->first == 3);
+    assert(p->second == 4);
+    p->first = 5;
+    p->second = 6;
+    assert(p->first == 5);
+    assert(p->second == 6);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/dereference.pass.cpp
new file mode 100644
index 0000000..c8455e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/dereference.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// T& operator*() const;
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p(new int(32));
+    assert(*p == 32);
+    *p = 3;
+    assert(*p == 3);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp
new file mode 100644
index 0000000..09fd98c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// shared_ptr
+
+// element_type& operator[](ptrdiff_t i) const;
+
+#include "test_macros.h"
+
+#include <memory>
+#include <cassert>
+
+struct Foo {
+  void call() {}
+};
+
+int main(int, char**) {
+  // Check that we get a static assertion when we try to use the bracket
+  // operator on shared_ptr<T> when T is not an array type.
+  const std::shared_ptr<Foo[]> p1;
+  (void)p1->call(); // expected-error@*:* {{std::shared_ptr<T>::operator-> is only valid when T is not an array type.}}
+  const std::shared_ptr<Foo[4]> p2;
+  (void)p2->call(); // expected-error@*:* {{std::shared_ptr<T>::operator-> is only valid when T is not an array type.}}
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bool.pass.cpp
new file mode 100644
index 0000000..d8c067c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bool.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// explicit operator bool() const;
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {
+  int a;
+  virtual ~A(){};
+};
+struct B : A {};
+
+int main(int, char**)
+{
+    static_assert(std::is_constructible<bool, std::shared_ptr<A> >::value, "");
+    static_assert(!std::is_convertible<std::shared_ptr<A>, bool>::value, "");
+
+    {
+      const std::shared_ptr<int> p(new int(32));
+      assert(p);
+    }
+    {
+      const std::shared_ptr<int> p;
+      assert(!p);
+    }
+#if !defined(TEST_HAS_NO_RTTI)
+    {
+      std::shared_ptr<A> basePtr = std::make_shared<B>();
+      std::shared_ptr<B> sp = std::dynamic_pointer_cast<B>(basePtr);
+      assert(sp);
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp
new file mode 100644
index 0000000..eaf4db3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// shared_ptr
+
+// element_type& operator[](ptrdiff_t i) const;
+
+#include "test_macros.h"
+
+#include <memory>
+#include <cassert>
+
+int main(int, char**) {
+  // Check that we get a static assertion when we try to use the bracket
+  // operator on shared_ptr<T> when T is not an array type.
+  const std::shared_ptr<int> p;
+  (void)p[0]; // expected-error@*:* {{std::shared_ptr<T>::operator[] is only valid when T is an array type.}}
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.pass.cpp
new file mode 100644
index 0000000..3a76d31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// shared_ptr
+
+// element_type& operator[](ptrdiff_t i) const;
+
+#include "test_macros.h"
+
+#include <memory>
+#include <cassert>
+
+int main(int, char**) {
+  {
+    const std::shared_ptr<int[8]> p(new int[8]);
+
+    for (int i = 0; i < 8; ++i)
+      p[i] = i;
+    for (int i = 0; i < 8; ++i)
+      assert(p[i] == i);
+  }
+  {
+    int* iptr = new int[8];
+    for (int i = 0; i < 8; ++i)
+      iptr[i] = i;
+
+    const std::shared_ptr<int[8]> p(iptr);
+
+    for (int i = 0; i < 8; ++i)
+      assert(p[i] == i);
+  }
+  {
+    const std::shared_ptr<int[]> p(new int[8]);
+
+    for (int i = 0; i < 8; ++i)
+      p[i] = i;
+    for (int i = 0; i < 8; ++i)
+      assert(p[i] == i);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/owner_before_shared_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/owner_before_shared_ptr.pass.cpp
new file mode 100644
index 0000000..497a53b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/owner_before_shared_ptr.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template <class U> bool owner_before(shared_ptr<U> const& b) const noexcept;
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2 = p1;
+    const std::shared_ptr<int> p3(new int);
+    assert(!p1.owner_before(p2));
+    assert(!p2.owner_before(p1));
+    assert(p1.owner_before(p3) || p3.owner_before(p1));
+    assert(p3.owner_before(p1) == p3.owner_before(p2));
+    ASSERT_NOEXCEPT(p1.owner_before(p2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/owner_before_weak_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/owner_before_weak_ptr.pass.cpp
new file mode 100644
index 0000000..07c7a06
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/owner_before_weak_ptr.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template <class U> bool owner_before(weak_ptr<U> const& b) const noexcept;
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2 = p1;
+    const std::shared_ptr<int> p3(new int);
+    const std::weak_ptr<int> w1(p1);
+    const std::weak_ptr<int> w2(p2);
+    const std::weak_ptr<int> w3(p3);
+    assert(!p1.owner_before(w2));
+    assert(!p2.owner_before(w1));
+    assert(p1.owner_before(w3) || p3.owner_before(w1));
+    assert(p3.owner_before(w1) == p3.owner_before(w2));
+    ASSERT_NOEXCEPT(p1.owner_before(w2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/unique.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/unique.pass.cpp
new file mode 100644
index 0000000..0b7d29d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/unique.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// bool unique() const;
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p(new int(32));
+    assert(p.unique());
+    {
+    std::shared_ptr<int> p2 = p;
+    assert(!p.unique());
+    }
+    assert(p.unique());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp
new file mode 100644
index 0000000..47ae5dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.spec/swap.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// shared_ptr
+
+// template<class T> void swap(shared_ptr<T>& a, shared_ptr<T>& b);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        A* ptr1 = new A;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1(ptr1);
+        {
+            std::shared_ptr<A> p2(ptr2);
+            swap(p1, p2);
+            assert(p1.use_count() == 1);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 1);
+            assert(p2.get() == ptr1);
+            assert(A::count == 2);
+        }
+        assert(p1.use_count() == 1);
+        assert(p1.get() == ptr2);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = new A;
+        A* ptr2 = 0;
+        std::shared_ptr<A> p1(ptr1);
+        {
+            std::shared_ptr<A> p2;
+            swap(p1, p2);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 1);
+            assert(p2.get() == ptr1);
+            assert(A::count == 1);
+        }
+        assert(p1.use_count() == 0);
+        assert(p1.get() == ptr2);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = 0;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1;
+        {
+            std::shared_ptr<A> p2(ptr2);
+            swap(p1, p2);
+            assert(p1.use_count() == 1);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 0);
+            assert(p2.get() == ptr1);
+            assert(A::count == 1);
+        }
+        assert(p1.use_count() == 1);
+        assert(p1.get() == ptr2);
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        A* ptr1 = 0;
+        A* ptr2 = 0;
+        std::shared_ptr<A> p1;
+        {
+            std::shared_ptr<A> p2;
+            swap(p1, p2);
+            assert(p1.use_count() == 0);
+            assert(p1.get() == ptr2);
+            assert(p2.use_count() == 0);
+            assert(p2.get() == ptr1);
+            assert(A::count == 0);
+        }
+        assert(p1.use_count() == 0);
+        assert(p1.get() == ptr2);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/types.pass.cpp
new file mode 100644
index 0000000..017876c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/types.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class T> class weak_ptr
+// {
+// public:
+//     typedef T element_type; // until C++17
+//     typedef remove_extent_t<T> element_type; // since C++17
+//     ...
+// };
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A;  // purposefully incomplete
+struct B {
+  int x;
+  B() = default;
+};
+
+template <class T>
+void test() {
+  ASSERT_SAME_TYPE(typename std::weak_ptr<T>::element_type, T);
+#if TEST_STD_VER > 14
+  ASSERT_SAME_TYPE(typename std::weak_ptr<T[]>::element_type, T);
+  ASSERT_SAME_TYPE(typename std::weak_ptr<T[8]>::element_type, T);
+#endif
+}
+
+int main(int, char**)
+{
+  test<A>();
+  test<B>();
+  test<int>();
+  test<char*>();
+
+#if TEST_STD_VER > 14
+  ASSERT_SAME_TYPE(typename std::weak_ptr<int[][2]>::element_type, int[2]);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.ownerless/owner_less.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.ownerless/owner_less.pass.cpp
new file mode 100644
index 0000000..132065a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.ownerless/owner_less.pass.cpp
@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <memory>
+
+// template <class T> struct owner_less;
+//
+// template <class T>
+// struct owner_less<shared_ptr<T> >
+//     : binary_function<shared_ptr<T>, shared_ptr<T>, bool>
+// {
+//     typedef bool result_type;
+//     bool operator()(shared_ptr<T> const&, shared_ptr<T> const&) const noexcept;
+//     bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
+//     bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
+// };
+//
+// template <class T>
+// struct owner_less<weak_ptr<T> >
+//     : binary_function<weak_ptr<T>, weak_ptr<T>, bool>
+// {
+//     typedef bool result_type;
+//     bool operator()(weak_ptr<T> const&, weak_ptr<T> const&) const noexcept;
+//     bool operator()(shared_ptr<T> const&, weak_ptr<T> const&) const noexcept;
+//     bool operator()(weak_ptr<T> const&, shared_ptr<T> const&) const noexcept;
+// };
+//
+// Added in C++17
+// template<> struct owner_less<void>
+// {
+//     template<class T, class U>
+//         bool operator()(shared_ptr<T> const&, shared_ptr<U> const&) const noexcept;
+//     template<class T, class U>
+//         bool operator()(shared_ptr<T> const&, weak_ptr<U> const&) const noexcept;
+//     template<class T, class U>
+//         bool operator()(weak_ptr<T> const&, shared_ptr<U> const&) const noexcept;
+//     template<class T, class U>
+//         bool operator()(weak_ptr<T> const&, weak_ptr<U> const&) const noexcept;
+//
+//     typedef unspecified is_transparent;
+// };
+
+#include <memory>
+#include <cassert>
+#include <set>
+#include "test_macros.h"
+
+struct X {};
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2 = p1;
+    const std::shared_ptr<int> p3(new int);
+    const std::weak_ptr<int> w1(p1);
+    const std::weak_ptr<int> w2(p2);
+    const std::weak_ptr<int> w3(p3);
+
+    {
+    typedef std::owner_less<std::shared_ptr<int> > CS;
+    CS cs;
+
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<std::shared_ptr<int>, CS::first_argument_type>::value), "" );
+    static_assert((std::is_same<std::shared_ptr<int>, CS::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, CS::result_type>::value), "" );
+#endif
+
+    assert(!cs(p1, p2));
+    assert(!cs(p2, p1));
+    assert(cs(p1 ,p3) || cs(p3, p1));
+    assert(cs(p3, p1) == cs(p3, p2));
+    ASSERT_NOEXCEPT(cs(p1, p1));
+
+    assert(!cs(p1, w2));
+    assert(!cs(p2, w1));
+    assert(cs(p1, w3) || cs(p3, w1));
+    assert(cs(p3, w1) == cs(p3, w2));
+    ASSERT_NOEXCEPT(cs(p1, w1));
+    ASSERT_NOEXCEPT(cs(w1, p1));
+    }
+    {
+    typedef std::owner_less<std::weak_ptr<int> > CS;
+    CS cs;
+
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<std::weak_ptr<int>, CS::first_argument_type>::value), "" );
+    static_assert((std::is_same<std::weak_ptr<int>, CS::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, CS::result_type>::value), "" );
+#endif
+
+    assert(!cs(w1, w2));
+    assert(!cs(w2, w1));
+    assert(cs(w1, w3) || cs(w3, w1));
+    assert(cs(w3, w1) == cs(w3, w2));
+    ASSERT_NOEXCEPT(cs(w1, w1));
+
+    assert(!cs(w1, p2));
+    assert(!cs(w2, p1));
+    assert(cs(w1, p3) || cs(w3, p1));
+    assert(cs(w3, p1) == cs(w3, p2));
+    ASSERT_NOEXCEPT(cs(w1, p1));
+    ASSERT_NOEXCEPT(cs(p1, w1));
+    }
+#if TEST_STD_VER > 14
+    {
+    std::shared_ptr<int> sp1;
+    std::shared_ptr<void> sp2;
+    std::shared_ptr<long> sp3;
+    std::weak_ptr<int> wp1;
+
+    std::owner_less<> cmp;
+    assert(!cmp(sp1, sp2));
+    assert(!cmp(sp1, wp1));
+    assert(!cmp(sp1, sp3));
+    assert(!cmp(wp1, sp1));
+    assert(!cmp(wp1, wp1));
+    ASSERT_NOEXCEPT(cmp(sp1, sp1));
+    ASSERT_NOEXCEPT(cmp(sp1, wp1));
+    ASSERT_NOEXCEPT(cmp(wp1, sp1));
+    ASSERT_NOEXCEPT(cmp(wp1, wp1));
+    }
+    {
+    // test heterogeneous lookups
+    std::set<std::shared_ptr<X>, std::owner_less<>> s;
+    std::shared_ptr<void> vp;
+    assert(s.find(vp) == s.end());
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/shared_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/shared_ptr_Y.pass.cpp
new file mode 100644
index 0000000..97994e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/shared_ptr_Y.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class Y> weak_ptr& operator=(const shared_ptr<Y>& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+        {
+            std::weak_ptr<B> pB;
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 1);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        const std::shared_ptr<A[]> p1(new A[8]);
+        assert(p1.use_count() == 1);
+        {
+            std::weak_ptr<const A[]> p2;
+            p2 = p1;
+            assert(A::count == 8);
+            assert(p2.use_count() == 1);
+            assert(p1.use_count() == 1);
+        }
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp
new file mode 100644
index 0000000..cfb8a1d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// weak_ptr& operator=(const weak_ptr& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> ps(new A);
+        const std::weak_ptr<A> pA(ps);
+        {
+            std::weak_ptr<A> pB;
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 1);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+    {
+        const std::shared_ptr<A> ps(new A);
+        std::weak_ptr<A> pA(ps);
+        {
+            std::weak_ptr<A> pB;
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+        }
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr_Y.pass.cpp
new file mode 100644
index 0000000..035e6e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.assign/weak_ptr_Y.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class Y> weak_ptr& operator=(const weak_ptr<Y>& r);
+// template<class Y> weak_ptr& operator=(weak_ptr<Y>&& r);
+
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> ps(new A);
+        const std::weak_ptr<A> pA(ps);
+        {
+            std::weak_ptr<B> pB;
+            pB = pA;
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 1);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+    {
+        const std::shared_ptr<A> ps(new A);
+        std::weak_ptr<A> pA(ps);
+        {
+            std::weak_ptr<B> pB;
+            pB = std::move(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+        }
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        const std::shared_ptr<A[]> ps(new A[8]);
+        const std::weak_ptr<A[]> p1(ps);
+        {
+            std::weak_ptr<const A[]> p2;
+            p2 = p1;
+            assert(A::count == 8);
+            assert(p2.use_count() == 1);
+            assert(p1.use_count() == 1);
+        }
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+
+    {
+        const std::shared_ptr<A[]> ps(new A[8]);
+        std::weak_ptr<A[]> p1(ps);
+        {
+            std::weak_ptr<const A[]> p2;
+            p2 = std::move(p1);
+            assert(A::count == 8);
+            assert(p2.use_count() == 1);
+        }
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/default.pass.cpp
new file mode 100644
index 0000000..9d6c72d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/default.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template<class T> class weak_ptr
+
+// weak_ptr();
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A;
+
+int main(int, char**)
+{
+    std::weak_ptr<A> p;
+    assert(p.use_count() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/shared_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/shared_ptr_Y.pass.cpp
new file mode 100644
index 0000000..d9b405a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/shared_ptr_Y.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class Y> weak_ptr(const shared_ptr<Y>& r);
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct C
+{
+    static int count;
+
+    C() {++count;}
+    C(const C&) {++count;}
+    virtual ~C() {--count;}
+};
+
+int C::count = 0;
+
+int main(int, char**)
+{
+    static_assert(( std::is_convertible<std::shared_ptr<A>, std::weak_ptr<B> >::value), "");
+    static_assert((!std::is_convertible<std::weak_ptr<B>, std::shared_ptr<A> >::value), "");
+    static_assert((!std::is_convertible<std::shared_ptr<A>, std::weak_ptr<C> >::value), "");
+    {
+        const std::shared_ptr<A> pA(new A);
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+        {
+            std::weak_ptr<B> pB(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 1);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+        {
+            std::weak_ptr<B> pB(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> p1(new A[8]);
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+        {
+            std::weak_ptr<const A[]> p2(p1);
+            assert(A::count == 8);
+            assert(p2.use_count() == 1);
+            assert(p1.use_count() == 1);
+        }
+        assert(p1.use_count() == 1);
+        assert(A::count == 8);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/shared_ptr_deduction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/shared_ptr_deduction.pass.cpp
new file mode 100644
index 0000000..bf4a432
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/shared_ptr_deduction.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class T> class weak_ptr
+
+// weak_ptr(shared_ptr<T>) -> weak_ptr<T>
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+  std::shared_ptr<A> s(new A);
+  auto w = std::weak_ptr(s);
+  ASSERT_SAME_TYPE(decltype(w), std::weak_ptr<A>);
+  assert(!w.expired());
+  assert(w.use_count() == 1);
+  assert(w.lock().get() == s.get());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp
new file mode 100644
index 0000000..6baa884
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// weak_ptr(const weak_ptr& r);
+// weak_ptr(weak_ptr &&r)
+
+#include <memory>
+#include <type_traits>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct C
+{
+    static int count;
+
+    C() {++count;}
+    C(const C&) {++count;}
+    virtual ~C() {--count;}
+};
+
+int C::count = 0;
+
+template <class T>
+std::weak_ptr<T> source (std::shared_ptr<T> p) { return std::weak_ptr<T>(p); }
+
+#if TEST_STD_VER >= 11
+template <class T>
+void sink (std::weak_ptr<T> &&) {}
+#endif
+
+int main(int, char**)
+{
+    {
+        const std::shared_ptr<A> ps(new A);
+        const std::weak_ptr<A> pA(ps);
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+        {
+            std::weak_ptr<A> pB(pA);
+            assert(B::count == 1);
+            assert(A::count == 1);
+            assert(pB.use_count() == 1);
+            assert(pA.use_count() == 1);
+        }
+        assert(pA.use_count() == 1);
+        assert(B::count == 1);
+        assert(A::count == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::weak_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+        {
+            std::weak_ptr<A> pB(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER >= 11
+    {
+        std::shared_ptr<A> ps(new A);
+        std::weak_ptr<A> pA = source(ps);
+        assert(pA.use_count() == 1);
+        assert(A::count == 1);
+        sink(std::move(pA)); // kill off the weak pointer
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr_Y.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr_Y.pass.cpp
new file mode 100644
index 0000000..7167701
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.const/weak_ptr_Y.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class Y> weak_ptr(const weak_ptr<Y>& r);
+// template<class Y> weak_ptr(weak_ptr<Y>&& r);
+
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    static int count;
+
+    B() {++count;}
+    B(const B&) {++count;}
+    virtual ~B() {--count;}
+};
+
+int B::count = 0;
+
+struct A
+    : public B
+{
+    static int count;
+
+    A() {++count;}
+    A(const A& other) : B(other) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+struct C
+{
+    static int count;
+
+    C() {++count;}
+    C(const C&) {++count;}
+    virtual ~C() {--count;}
+};
+
+int C::count = 0;
+
+template <class T>
+std::weak_ptr<T> source (std::shared_ptr<T> p) { return std::weak_ptr<T>(p); }
+
+int main(int, char**)
+{
+    static_assert(( std::is_convertible<std::weak_ptr<A>, std::weak_ptr<B> >::value), "");
+    static_assert((!std::is_convertible<std::weak_ptr<B>, std::weak_ptr<A> >::value), "");
+    static_assert((!std::is_convertible<std::weak_ptr<A>, std::weak_ptr<C> >::value), "");
+    {
+        const std::weak_ptr<A> pA(std::shared_ptr<A>(new A));
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+        {
+            std::weak_ptr<B> pB(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+    {
+        std::weak_ptr<A> pA;
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+        {
+            std::weak_ptr<B> pB(pA);
+            assert(B::count == 0);
+            assert(A::count == 0);
+            assert(pB.use_count() == 0);
+            assert(pA.use_count() == 0);
+        }
+        assert(pA.use_count() == 0);
+        assert(B::count == 0);
+        assert(A::count == 0);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+    {
+        std::shared_ptr<A> ps(new A);
+        std::weak_ptr<A> pA = source(ps);
+        std::weak_ptr<B> pB(std::move(pA));
+        assert(pB.use_count() == 1);
+    }
+    assert(B::count == 0);
+    assert(A::count == 0);
+
+#if TEST_STD_VER > 14
+    {
+        std::shared_ptr<A[]> ps(new A[8]);
+        std::weak_ptr<A[]> p1 = source(ps);
+        std::weak_ptr<const A[]> p2(p1);
+        assert(p2.use_count() == 1);
+    }
+    assert(A::count == 0);
+
+    {
+        std::shared_ptr<A[]> ps(new A[8]);
+        std::weak_ptr<A[]> p1 = source(ps);
+        std::weak_ptr<const A[]> p2(std::move(p1));
+        assert(p2.use_count() == 1);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.dest/tested_elsewhere.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.dest/tested_elsewhere.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.dest/tested_elsewhere.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.mod/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.mod/reset.pass.cpp
new file mode 100644
index 0000000..93be75b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.mod/reset.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// void swap(weak_ptr& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::shared_ptr<A> p1(new A);
+        std::weak_ptr<A> w1(p1);
+        assert(w1.use_count() == 1);
+        w1.reset();
+        assert(w1.use_count() == 0);
+        assert(p1.use_count() == 1);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.mod/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.mod/swap.pass.cpp
new file mode 100644
index 0000000..73453d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.mod/swap.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// void swap(weak_ptr& r);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        A* ptr1 = new A;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1(ptr1);
+        std::weak_ptr<A> w1(p1);
+        {
+            std::shared_ptr<A> p2(ptr2);
+            std::weak_ptr<A> w2(p2);
+            w1.swap(w2);
+            assert(w1.use_count() == 1);
+            assert(w1.lock().get() == ptr2);
+            assert(w2.use_count() == 1);
+            assert(w2.lock().get() == ptr1);
+            assert(A::count == 2);
+        }
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/expired.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/expired.pass.cpp
new file mode 100644
index 0000000..bc0eb6e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/expired.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// bool expired() const;
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::weak_ptr<A> wp;
+        assert(wp.use_count() == 0);
+        assert(wp.expired() == (wp.use_count() == 0));
+    }
+    {
+        std::shared_ptr<A> sp0(new A);
+        std::weak_ptr<A> wp(sp0);
+        assert(wp.use_count() == 1);
+        assert(wp.expired() == (wp.use_count() == 0));
+        sp0.reset();
+        assert(wp.use_count() == 0);
+        assert(wp.expired() == (wp.use_count() == 0));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/lock.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/lock.pass.cpp
new file mode 100644
index 0000000..107a587
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/lock.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// shared_ptr<T> lock() const;
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        std::weak_ptr<A> wp;
+        std::shared_ptr<A> sp = wp.lock();
+        assert(sp.use_count() == 0);
+        assert(sp.get() == 0);
+        assert(A::count == 0);
+    }
+    {
+        std::shared_ptr<A> sp0(new A);
+        std::weak_ptr<A> wp(sp0);
+        std::shared_ptr<A> sp = wp.lock();
+        assert(sp.use_count() == 2);
+        assert(sp.get() == sp0.get());
+        assert(A::count == 1);
+    }
+    assert(A::count == 0);
+    {
+        std::shared_ptr<A> sp0(new A);
+        std::weak_ptr<A> wp(sp0);
+        sp0.reset();
+        std::shared_ptr<A> sp = wp.lock();
+        assert(sp.use_count() == 0);
+        assert(sp.get() == 0);
+        assert(A::count == 0);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/not_less_than.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/not_less_than.compile.fail.cpp
new file mode 100644
index 0000000..2df6d6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/not_less_than.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// template <class T> class weak_ptr;
+//
+// not less than comparable
+
+#include <memory>
+#include <cassert>
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2(new int);
+    const std::weak_ptr<int> w1(p1);
+    const std::weak_ptr<int> w2(p2);
+
+    bool b = w1 < w2;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_shared_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_shared_ptr.pass.cpp
new file mode 100644
index 0000000..4d26f5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_shared_ptr.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class U> bool owner_before(const shared_ptr<U>& b) const noexcept;
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2 = p1;
+    const std::shared_ptr<int> p3(new int);
+    const std::weak_ptr<int> w1(p1);
+    const std::weak_ptr<int> w2(p2);
+    const std::weak_ptr<int> w3(p3);
+    assert(!w1.owner_before(p2));
+    assert(!w2.owner_before(p1));
+    assert(w1.owner_before(p3) || w3.owner_before(p1));
+    assert(w3.owner_before(p1) == w3.owner_before(p2));
+    ASSERT_NOEXCEPT(w1.owner_before(p2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_weak_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_weak_ptr.pass.cpp
new file mode 100644
index 0000000..39993cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.obs/owner_before_weak_ptr.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class U> bool owner_before(const weak_ptr<U>& b) const noexcept;
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::shared_ptr<int> p1(new int);
+    const std::shared_ptr<int> p2 = p1;
+    const std::shared_ptr<int> p3(new int);
+    const std::weak_ptr<int> w1(p1);
+    const std::weak_ptr<int> w2(p2);
+    const std::weak_ptr<int> w3(p3);
+    assert(!w1.owner_before(w2));
+    assert(!w2.owner_before(w1));
+    assert(w1.owner_before(w3) || w3.owner_before(w1));
+    assert(w3.owner_before(w1) == w3.owner_before(w2));
+    ASSERT_NOEXCEPT(w1.owner_before(w2));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.spec/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.spec/swap.pass.cpp
new file mode 100644
index 0000000..98429fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weak/util.smartptr.weak.spec/swap.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// weak_ptr
+
+// template<class T> void swap(weak_ptr<T>& a, weak_ptr<T>& b)
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    static int count;
+
+    A() {++count;}
+    A(const A&) {++count;}
+    ~A() {--count;}
+};
+
+int A::count = 0;
+
+int main(int, char**)
+{
+    {
+        A* ptr1 = new A;
+        A* ptr2 = new A;
+        std::shared_ptr<A> p1(ptr1);
+        std::weak_ptr<A> w1(p1);
+        {
+            std::shared_ptr<A> p2(ptr2);
+            std::weak_ptr<A> w2(p2);
+            swap(w1, w2);
+            assert(w1.use_count() == 1);
+            assert(w1.lock().get() == ptr2);
+            assert(w2.use_count() == 1);
+            assert(w2.lock().get() == ptr1);
+            assert(A::count == 2);
+        }
+    }
+    assert(A::count == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp
new file mode 100644
index 0000000..c4c829a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.weakptr/bad_weak_ptr.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// class bad_weak_ptr
+//     : public std::exception
+// {
+// public:
+//     bad_weak_ptr();
+// };
+
+#include <exception>
+#include <memory>
+#include <type_traits>
+#include <cassert>
+#include <cstring>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert((std::is_base_of<std::exception, std::bad_weak_ptr>::value), "");
+    std::bad_weak_ptr e;
+    std::bad_weak_ptr e2 = e;
+    e2 = e;
+    assert(std::strcmp(e.what(), "bad_weak_ptr") == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.fail.cpp
new file mode 100644
index 0000000..f4865ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <type_traits>
+
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#ifndef __cpp_lib_is_constant_evaluated
+  // expected-error@+1 {{no member named 'is_constant_evaluated' in namespace 'std'}}
+  bool b = std::is_constant_evaluated();
+#else
+  // expected-error-re@+1 {{{{(static_assert|static assertion)}} failed}}
+  static_assert(!std::is_constant_evaluated(), "");
+  // expected-warning@-1 0-1 {{'std::is_constant_evaluated' will always evaluate to 'true' in a manifestly constant-evaluated expression}}
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.pass.cpp
new file mode 100644
index 0000000..832fda3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.const.eval/is_constant_evaluated.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <type_traits>
+
+// constexpr bool is_constant_evaluated() noexcept; // C++20
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#ifndef __cpp_lib_is_constant_evaluated
+#if TEST_HAS_BUILTIN(__builtin_is_constant_evaluated)
+# error __cpp_lib_is_constant_evaluated should be defined
+#endif
+#endif
+
+// Disable the tautological constant evaluation warnings for this test,
+// because it's explicitly testing those cases.
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wconstant-evaluated")
+TEST_MSVC_DIAGNOSTIC_IGNORED(5063)
+
+template <bool> struct InTemplate {};
+
+int main(int, char**)
+{
+  // Test the signature
+  {
+    ASSERT_SAME_TYPE(decltype(std::is_constant_evaluated()), bool);
+    ASSERT_NOEXCEPT(std::is_constant_evaluated());
+    constexpr bool p = std::is_constant_evaluated();
+    assert(p);
+  }
+  // Test the return value of the builtin for basic sanity only. It's the
+  // compiler's job to test the builtin for correctness.
+  {
+    static_assert(std::is_constant_evaluated(), "");
+    bool p = std::is_constant_evaluated();
+    assert(!p);
+    ASSERT_SAME_TYPE(InTemplate<std::is_constant_evaluated()>, InTemplate<true>);
+    static int local_static = std::is_constant_evaluated() ? 42 : -1;
+    assert(local_static == 42);
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.help/bool_constant.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.help/bool_constant.pass.cpp
new file mode 100644
index 0000000..917f8b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.help/bool_constant.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// bool_constant
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER > 14
+    typedef std::bool_constant<true> _t;
+    static_assert(_t::value, "");
+    static_assert((std::is_same<_t::value_type, bool>::value), "");
+    static_assert((std::is_same<_t::type, _t>::value), "");
+    static_assert((_t() == true), "");
+
+    typedef std::bool_constant<false> _f;
+    static_assert(!_f::value, "");
+    static_assert((std::is_same<_f::value_type, bool>::value), "");
+    static_assert((std::is_same<_f::type, _f>::value), "");
+    static_assert((_f() == false), "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.help/integral_constant.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.help/integral_constant.pass.cpp
new file mode 100644
index 0000000..f312aca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.help/integral_constant.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// integral_constant
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::integral_constant<int, 5> _5;
+    static_assert(_5::value == 5, "");
+    static_assert((std::is_same<_5::value_type, int>::value), "");
+    static_assert((std::is_same<_5::type, _5>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((_5() == 5), "");
+#endif
+    assert(_5() == 5);
+
+
+#if TEST_STD_VER > 11
+    static_assert ( _5{}() == 5, "" );
+    static_assert ( std::true_type{}(), "" );
+#endif
+
+    static_assert(std::false_type::value == false, "");
+    static_assert((std::is_same<std::false_type::value_type, bool>::value), "");
+    static_assert((std::is_same<std::false_type::type, std::false_type>::value), "");
+
+    static_assert(std::true_type::value == true, "");
+    static_assert((std::is_same<std::true_type::value_type, bool>::value), "");
+    static_assert((std::is_same<std::true_type::type, std::true_type>::value), "");
+
+    std::false_type f1;
+    std::false_type f2 = f1;
+    assert(!f2);
+
+    std::true_type t1;
+    std::true_type t2 = t1;
+    assert(t2);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/conjunction.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/conjunction.compile.pass.cpp
new file mode 100644
index 0000000..725eb5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/conjunction.compile.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// type_traits
+
+// template<class... B> struct conjunction;                           // C++17
+// template<class... B>
+//   constexpr bool conjunction_v = conjunction<B...>::value;         // C++17
+
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct True  { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+struct MySpecialTrueType { static constexpr auto value = true; static constexpr auto MySpecial = 23; };
+struct MyOtherSpecialTrueType { static constexpr auto value = -1; static constexpr auto MySpecial = 46; };
+struct MySpecialFalseType { static constexpr auto value = false; static constexpr auto MySpecial = 37; };
+struct HasNoValue {};
+struct ExplicitlyConvertibleToBool { explicit constexpr operator bool() const { return true; } };
+struct ValueExplicitlyConvertible { static constexpr ExplicitlyConvertibleToBool value {}; };
+
+static_assert( std::conjunction<>::value);
+static_assert( std::conjunction<std::true_type >::value);
+static_assert(!std::conjunction<std::false_type>::value);
+
+static_assert( std::conjunction_v<>);
+static_assert( std::conjunction_v<std::true_type >);
+static_assert(!std::conjunction_v<std::false_type>);
+
+static_assert( std::conjunction<std::true_type,  std::true_type >::value);
+static_assert(!std::conjunction<std::true_type,  std::false_type>::value);
+static_assert(!std::conjunction<std::false_type, std::true_type >::value);
+static_assert(!std::conjunction<std::false_type, std::false_type>::value);
+
+static_assert( std::conjunction_v<std::true_type,  std::true_type >);
+static_assert(!std::conjunction_v<std::true_type,  std::false_type>);
+static_assert(!std::conjunction_v<std::false_type, std::true_type >);
+static_assert(!std::conjunction_v<std::false_type, std::false_type>);
+
+static_assert( std::conjunction<std::true_type,  std::true_type,  std::true_type >::value);
+static_assert(!std::conjunction<std::true_type,  std::false_type, std::true_type >::value);
+static_assert(!std::conjunction<std::false_type, std::true_type,  std::true_type >::value);
+static_assert(!std::conjunction<std::false_type, std::false_type, std::true_type >::value);
+static_assert(!std::conjunction<std::true_type,  std::true_type,  std::false_type>::value);
+static_assert(!std::conjunction<std::true_type,  std::false_type, std::false_type>::value);
+static_assert(!std::conjunction<std::false_type, std::true_type,  std::false_type>::value);
+static_assert(!std::conjunction<std::false_type, std::false_type, std::false_type>::value);
+
+static_assert( std::conjunction_v<std::true_type,  std::true_type,  std::true_type >);
+static_assert(!std::conjunction_v<std::true_type,  std::false_type, std::true_type >);
+static_assert(!std::conjunction_v<std::false_type, std::true_type,  std::true_type >);
+static_assert(!std::conjunction_v<std::false_type, std::false_type, std::true_type >);
+static_assert(!std::conjunction_v<std::true_type,  std::true_type,  std::false_type>);
+static_assert(!std::conjunction_v<std::true_type,  std::false_type, std::false_type>);
+static_assert(!std::conjunction_v<std::false_type, std::true_type,  std::false_type>);
+static_assert(!std::conjunction_v<std::false_type, std::false_type, std::false_type>);
+
+static_assert( std::conjunction<True >::value);
+static_assert(!std::conjunction<False>::value);
+
+static_assert( std::conjunction_v<True >);
+static_assert(!std::conjunction_v<False>);
+
+static_assert(std::is_base_of_v<MySpecialTrueType, std::conjunction<MyOtherSpecialTrueType, MySpecialTrueType>>);
+static_assert(std::is_base_of_v<MyOtherSpecialTrueType, std::conjunction<MySpecialTrueType, MyOtherSpecialTrueType>>);
+static_assert(std::is_base_of_v<MySpecialFalseType, std::conjunction<MySpecialFalseType, MyOtherSpecialTrueType>>);
+static_assert(std::is_base_of_v<MySpecialFalseType, std::conjunction<MyOtherSpecialTrueType, MySpecialFalseType>>);
+
+static_assert(std::is_base_of_v<std::false_type, std::conjunction<std::false_type, HasNoValue>>);
+
+static_assert(!std::conjunction<std::false_type, HasNoValue>::value);
+static_assert(!std::conjunction_v<std::false_type, HasNoValue>);
+
+// Also check the case where HasNoValue is not the last in the list (https://llvm.org/PR584900).
+static_assert(!std::conjunction<std::false_type, HasNoValue, std::true_type>::value);
+static_assert(!std::conjunction_v<std::false_type, HasNoValue, std::true_type>);
+
+static_assert(!std::conjunction<std::false_type, HasNoValue, std::false_type>::value);
+static_assert(!std::conjunction_v<std::false_type, HasNoValue, std::false_type>);
+
+static_assert(std::conjunction<MyOtherSpecialTrueType>::value == -1);
+static_assert(std::conjunction_v<MyOtherSpecialTrueType>);
+
+static_assert(std::is_base_of_v<ValueExplicitlyConvertible, std::conjunction<ValueExplicitlyConvertible>>);
+static_assert(std::conjunction_v<ValueExplicitlyConvertible, std::true_type>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/disjunction.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/disjunction.compile.pass.cpp
new file mode 100644
index 0000000..43952f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/disjunction.compile.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// type_traits
+
+// template<class... B> struct disjunction;                           // C++17
+// template<class... B>
+//   constexpr bool disjunction_v = disjunction<B...>::value;         // C++17
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct True  { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+struct MySpecialTrueType { static constexpr auto value = -1; static constexpr auto MySpecial = 37; };
+struct MySpecialFalseType { static constexpr auto value = false; static constexpr auto MySpecial = 23; };
+struct MyOtherSpecialFalseType { static constexpr auto value = false; static constexpr auto MySpecial = 46; };
+struct HasNoValue {};
+struct ExplicitlyConvertibleToBool { explicit constexpr operator bool() const { return false; } };
+struct ValueExplicitlyConvertible { static constexpr ExplicitlyConvertibleToBool value {}; };
+
+static_assert(!std::disjunction<>::value);
+static_assert( std::disjunction<std::true_type >::value);
+static_assert(!std::disjunction<std::false_type>::value);
+
+static_assert(!std::disjunction_v<>);
+static_assert( std::disjunction_v<std::true_type >);
+static_assert(!std::disjunction_v<std::false_type>);
+
+static_assert( std::disjunction<std::true_type,  std::true_type >::value);
+static_assert( std::disjunction<std::true_type,  std::false_type>::value);
+static_assert( std::disjunction<std::false_type, std::true_type >::value);
+static_assert(!std::disjunction<std::false_type, std::false_type>::value);
+
+static_assert( std::disjunction_v<std::true_type,  std::true_type >);
+static_assert( std::disjunction_v<std::true_type,  std::false_type>);
+static_assert( std::disjunction_v<std::false_type, std::true_type >);
+static_assert(!std::disjunction_v<std::false_type, std::false_type>);
+
+static_assert( std::disjunction<std::true_type,  std::true_type,  std::true_type >::value);
+static_assert( std::disjunction<std::true_type,  std::false_type, std::true_type >::value);
+static_assert( std::disjunction<std::false_type, std::true_type,  std::true_type >::value);
+static_assert( std::disjunction<std::false_type, std::false_type, std::true_type >::value);
+static_assert( std::disjunction<std::true_type,  std::true_type,  std::false_type>::value);
+static_assert( std::disjunction<std::true_type,  std::false_type, std::false_type>::value);
+static_assert( std::disjunction<std::false_type, std::true_type,  std::false_type>::value);
+static_assert(!std::disjunction<std::false_type, std::false_type, std::false_type>::value);
+
+static_assert( std::disjunction_v<std::true_type,  std::true_type,  std::true_type >);
+static_assert( std::disjunction_v<std::true_type,  std::false_type, std::true_type >);
+static_assert( std::disjunction_v<std::false_type, std::true_type,  std::true_type >);
+static_assert( std::disjunction_v<std::false_type, std::false_type, std::true_type >);
+static_assert( std::disjunction_v<std::true_type,  std::true_type,  std::false_type>);
+static_assert( std::disjunction_v<std::true_type,  std::false_type, std::false_type>);
+static_assert( std::disjunction_v<std::false_type, std::true_type,  std::false_type>);
+static_assert(!std::disjunction_v<std::false_type, std::false_type, std::false_type>);
+
+static_assert ( std::disjunction<True >::value, "" );
+static_assert (!std::disjunction<False>::value, "" );
+
+static_assert ( std::disjunction_v<True >, "" );
+static_assert (!std::disjunction_v<False>, "" );
+
+static_assert(std::is_base_of_v<MySpecialFalseType, std::disjunction<MyOtherSpecialFalseType, MySpecialFalseType>>);
+static_assert(std::is_base_of_v<MyOtherSpecialFalseType, std::disjunction<MySpecialFalseType, MyOtherSpecialFalseType>>);
+static_assert(std::is_base_of_v<MySpecialTrueType, std::disjunction<MySpecialTrueType, MyOtherSpecialFalseType>>);
+static_assert(std::is_base_of_v<MySpecialTrueType, std::disjunction<MyOtherSpecialFalseType, MySpecialTrueType>>);
+
+static_assert(std::is_base_of_v<std::true_type, std::disjunction<std::true_type, HasNoValue>>);
+
+static_assert(std::disjunction<std::true_type, HasNoValue>::value);
+static_assert(std::disjunction_v<std::true_type, HasNoValue>);
+
+// Also check the case where HasNoValue is not the last in the list (https://llvm.org/PR584900).
+static_assert(std::disjunction<std::true_type, HasNoValue, std::true_type>::value);
+static_assert(std::disjunction_v<std::true_type, HasNoValue, std::true_type>);
+
+static_assert(std::disjunction<std::true_type, HasNoValue, std::false_type>::value);
+static_assert(std::disjunction_v<std::true_type, HasNoValue, std::false_type>);
+
+static_assert(std::disjunction<MySpecialTrueType>::value == -1);
+static_assert(std::disjunction_v<MySpecialTrueType>);
+
+static_assert(std::is_base_of_v<ValueExplicitlyConvertible, std::disjunction<ValueExplicitlyConvertible>>);
+static_assert(std::disjunction_v<ValueExplicitlyConvertible, std::true_type>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/negation.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/negation.pass.cpp
new file mode 100644
index 0000000..5b3f2fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.logical/negation.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// type_traits
+
+// template<class B> struct negation;                        // C++17
+// template<class B>
+//   constexpr bool negation_v = negation<B>::value;         // C++17
+
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct True  { static constexpr bool value = true; };
+struct False { static constexpr bool value = false; };
+
+int main(int, char**)
+{
+    static_assert (!std::negation<std::true_type >::value, "" );
+    static_assert ( std::negation<std::false_type>::value, "" );
+
+    static_assert (!std::negation_v<std::true_type >, "" );
+    static_assert ( std::negation_v<std::false_type>, "" );
+
+    static_assert (!std::negation<True >::value, "" );
+    static_assert ( std::negation<False>::value, "" );
+
+    static_assert (!std::negation_v<True >, "" );
+    static_assert ( std::negation_v<False>, "" );
+
+    static_assert ( std::negation<std::negation<std::true_type >>::value, "" );
+    static_assert (!std::negation<std::negation<std::false_type>>::value, "" );
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_base_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_base_of.pass.cpp
new file mode 100644
index 0000000..b50cf57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_base_of.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_base_of
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_is_base_of()
+{
+    static_assert((std::is_base_of<T, U>::value), "");
+    static_assert((std::is_base_of<const T, U>::value), "");
+    static_assert((std::is_base_of<T, const U>::value), "");
+    static_assert((std::is_base_of<const T, const U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((std::is_base_of_v<T, U>), "");
+    static_assert((std::is_base_of_v<const T, U>), "");
+    static_assert((std::is_base_of_v<T, const U>), "");
+    static_assert((std::is_base_of_v<const T, const U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_base_of()
+{
+    static_assert((!std::is_base_of<T, U>::value), "");
+}
+
+struct B {};
+struct B1 : B {};
+struct B2 : B {};
+struct D : private B1, private B2 {};
+struct I0; // incomplete
+
+int main(int, char**)
+{
+    test_is_base_of<B, D>();
+    test_is_base_of<B1, D>();
+    test_is_base_of<B2, D>();
+    test_is_base_of<B, B1>();
+    test_is_base_of<B, B2>();
+    test_is_base_of<B, B>();
+
+    test_is_not_base_of<D, B>();
+    test_is_not_base_of<B&, D&>();
+    test_is_not_base_of<B[3], D[3]>();
+    test_is_not_base_of<int, int>();
+
+//  A scalar is never the base class of anything (including incomplete types)
+    test_is_not_base_of<int, B>();
+    test_is_not_base_of<int, B1>();
+    test_is_not_base_of<int, B2>();
+    test_is_not_base_of<int, D>();
+    test_is_not_base_of<int, I0>();
+
+//  A scalar never has base classes (including incomplete types)
+    test_is_not_base_of<B,  int>();
+    test_is_not_base_of<B1, int>();
+    test_is_not_base_of<B2, int>();
+    test_is_not_base_of<D,  int>();
+    test_is_not_base_of<I0, int>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_base_of_union.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_base_of_union.pass.cpp
new file mode 100644
index 0000000..43f2bf7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_base_of_union.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_base_of
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_is_base_of()
+{
+    static_assert((std::is_base_of<T, U>::value), "");
+    static_assert((std::is_base_of<const T, U>::value), "");
+    static_assert((std::is_base_of<T, const U>::value), "");
+    static_assert((std::is_base_of<const T, const U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((std::is_base_of_v<T, U>), "");
+    static_assert((std::is_base_of_v<const T, U>), "");
+    static_assert((std::is_base_of_v<T, const U>), "");
+    static_assert((std::is_base_of_v<const T, const U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_base_of()
+{
+    static_assert((!std::is_base_of<T, U>::value), "");
+}
+
+struct B {};
+struct B1 : B {};
+struct B2 : B {};
+struct D : private B1, private B2 {};
+union U0;
+union U1 {};
+struct I0;
+struct I1 {};
+
+int main(int, char**)
+{
+    // A union is never the base class of anything (including incomplete types)
+    test_is_not_base_of<U0, B>();
+    test_is_not_base_of<U0, B1>();
+    test_is_not_base_of<U0, B2>();
+    test_is_not_base_of<U0, D>();
+    test_is_not_base_of<U1, B>();
+    test_is_not_base_of<U1, B1>();
+    test_is_not_base_of<U1, B2>();
+    test_is_not_base_of<U1, D>();
+    test_is_not_base_of<U0, I0>();
+    test_is_not_base_of<U1, I1>();
+    test_is_not_base_of<U0, U1>();
+    test_is_not_base_of<U0, int>();
+    test_is_not_base_of<U1, int>();
+    test_is_not_base_of<I0, int>();
+    test_is_not_base_of<I1, int>();
+
+    // A union never has base classes (including incomplete types)
+    test_is_not_base_of<B,  U0>();
+    test_is_not_base_of<B1, U0>();
+    test_is_not_base_of<B2, U0>();
+    test_is_not_base_of<D,  U0>();
+    test_is_not_base_of<B,  U1>();
+    test_is_not_base_of<B1, U1>();
+    test_is_not_base_of<B2, U1>();
+    test_is_not_base_of<D,  U1>();
+    test_is_not_base_of<I0, U0>();
+    test_is_not_base_of<I1, U1>();
+    test_is_not_base_of<U1, U0>();
+    test_is_not_base_of<int, U0>();
+    test_is_not_base_of<int, U1>();
+    test_is_not_base_of<int, I0>();
+    test_is_not_base_of<int, I1>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp
new file mode 100644
index 0000000..804650f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_convertible.pass.cpp
@@ -0,0 +1,263 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_convertible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_is_convertible()
+{
+    static_assert((std::is_convertible<T, U>::value), "");
+    static_assert((std::is_convertible<const T, U>::value), "");
+    static_assert((std::is_convertible<T, const U>::value), "");
+    static_assert((std::is_convertible<const T, const U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((std::is_convertible_v<T, U>), "");
+    static_assert((std::is_convertible_v<const T, U>), "");
+    static_assert((std::is_convertible_v<T, const U>), "");
+    static_assert((std::is_convertible_v<const T, const U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_convertible()
+{
+    static_assert((!std::is_convertible<T, U>::value), "");
+    static_assert((!std::is_convertible<const T, U>::value), "");
+    static_assert((!std::is_convertible<T, const U>::value), "");
+    static_assert((!std::is_convertible<const T, const U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_convertible_v<T, U>), "");
+    static_assert((!std::is_convertible_v<const T, U>), "");
+    static_assert((!std::is_convertible_v<T, const U>), "");
+    static_assert((!std::is_convertible_v<const T, const U>), "");
+#endif
+}
+
+typedef void Function();
+typedef void ConstFunction() const;
+typedef char Array[1];
+
+struct StringType {
+  StringType(const char*) {}
+};
+
+class NonCopyable {
+  NonCopyable(NonCopyable&);
+};
+
+template <typename T>
+class CannotInstantiate {
+  enum { X = T::ThisExpressionWillBlowUp };
+};
+
+struct abstract { virtual int f() = 0; };
+
+int main(int, char**)
+{
+    // void
+    test_is_convertible<void,void> ();
+    test_is_not_convertible<void,Function> ();
+    test_is_not_convertible<void,Function&> ();
+    test_is_not_convertible<void,Function*> ();
+    test_is_not_convertible<void,Array> ();
+    test_is_not_convertible<void,Array&> ();
+    test_is_not_convertible<void,char> ();
+    test_is_not_convertible<void,char&> ();
+    test_is_not_convertible<void,char*> ();
+    test_is_not_convertible<char, void>();
+
+    // Function
+    test_is_not_convertible<Function, void> ();
+    test_is_not_convertible<Function, Function> ();
+    test_is_convertible<Function, Function&> ();
+    test_is_convertible<Function, Function*> ();
+    test_is_convertible<Function, Function*const> ();
+
+    static_assert(( std::is_convertible<Function, Function&&>::value), "");
+
+    test_is_not_convertible<Function, Array> ();
+    test_is_not_convertible<Function, Array&> ();
+    test_is_not_convertible<Function, char> ();
+    test_is_not_convertible<Function, char&> ();
+    test_is_not_convertible<Function, char*> ();
+
+    // Function&
+    test_is_not_convertible<Function&, void> ();
+    test_is_not_convertible<Function&, Function> ();
+    test_is_convertible<Function&, Function&> ();
+
+    test_is_convertible<Function&, Function*> ();
+    test_is_not_convertible<Function&, Array> ();
+    test_is_not_convertible<Function&, Array&> ();
+    test_is_not_convertible<Function&, char> ();
+    test_is_not_convertible<Function&, char&> ();
+    test_is_not_convertible<Function&, char*> ();
+
+    // Function*
+    test_is_not_convertible<Function*, void> ();
+    test_is_not_convertible<Function*, Function> ();
+    test_is_not_convertible<Function*, Function&> ();
+    test_is_convertible<Function*, Function*> ();
+
+    test_is_not_convertible<Function*, Array> ();
+    test_is_not_convertible<Function*, Array&> ();
+    test_is_not_convertible<Function*, char> ();
+    test_is_not_convertible<Function*, char&> ();
+    test_is_not_convertible<Function*, char*> ();
+
+    // Non-referencable function type
+    static_assert((!std::is_convertible<ConstFunction, Function>::value), "");
+    static_assert((!std::is_convertible<ConstFunction, Function*>::value), "");
+    static_assert((!std::is_convertible<ConstFunction, Function&>::value), "");
+    static_assert((!std::is_convertible<ConstFunction, Function&&>::value), "");
+    static_assert((!std::is_convertible<Function*, ConstFunction>::value), "");
+    static_assert((!std::is_convertible<Function&, ConstFunction>::value), "");
+    static_assert((!std::is_convertible<ConstFunction, ConstFunction>::value), "");
+    static_assert((!std::is_convertible<ConstFunction, void>::value), "");
+
+    // Array
+    test_is_not_convertible<Array, void> ();
+    test_is_not_convertible<Array, Function> ();
+    test_is_not_convertible<Array, Function&> ();
+    test_is_not_convertible<Array, Function*> ();
+    test_is_not_convertible<Array, Array> ();
+
+    static_assert((!std::is_convertible<Array, Array&>::value), "");
+    static_assert(( std::is_convertible<Array, const Array&>::value), "");
+    static_assert((!std::is_convertible<Array, const volatile Array&>::value), "");
+
+    static_assert((!std::is_convertible<const Array, Array&>::value), "");
+    static_assert(( std::is_convertible<const Array, const Array&>::value), "");
+    static_assert((!std::is_convertible<Array, volatile Array&>::value), "");
+    static_assert((!std::is_convertible<Array, const volatile Array&>::value), "");
+
+    static_assert(( std::is_convertible<Array, Array&&>::value), "");
+    static_assert(( std::is_convertible<Array, const Array&&>::value), "");
+    static_assert(( std::is_convertible<Array, volatile Array&&>::value), "");
+    static_assert(( std::is_convertible<Array, const volatile Array&&>::value), "");
+    static_assert(( std::is_convertible<const Array, const Array&&>::value), "");
+    static_assert((!std::is_convertible<Array&, Array&&>::value), "");
+    static_assert((!std::is_convertible<Array&&, Array&>::value), "");
+
+    test_is_not_convertible<Array, char> ();
+    test_is_not_convertible<Array, char&> ();
+
+    static_assert(( std::is_convertible<Array, char*>::value), "");
+    static_assert(( std::is_convertible<Array, const char*>::value), "");
+    static_assert(( std::is_convertible<Array, char* const>::value), "");
+    static_assert(( std::is_convertible<Array, char* const volatile>::value), "");
+
+    static_assert((!std::is_convertible<const Array, char*>::value), "");
+    static_assert(( std::is_convertible<const Array, const char*>::value), "");
+
+    static_assert((!std::is_convertible<char[42][42], char*>::value), "");
+    static_assert((!std::is_convertible<char[][1], char*>::value), "");
+
+    // Array&
+    test_is_not_convertible<Array&, void> ();
+    test_is_not_convertible<Array&, Function> ();
+    test_is_not_convertible<Array&, Function&> ();
+    test_is_not_convertible<Array&, Function*> ();
+    test_is_not_convertible<Array&, Array> ();
+
+    static_assert(( std::is_convertible<Array&, Array&>::value), "");
+    static_assert(( std::is_convertible<Array&, const Array&>::value), "");
+    static_assert((!std::is_convertible<const Array&, Array&>::value), "");
+    static_assert(( std::is_convertible<const Array&, const Array&>::value), "");
+
+    test_is_not_convertible<Array&, char> ();
+    test_is_not_convertible<Array&, char&> ();
+
+    static_assert(( std::is_convertible<Array&, char*>::value), "");
+    static_assert(( std::is_convertible<Array&, const char*>::value), "");
+    static_assert((!std::is_convertible<const Array&, char*>::value), "");
+    static_assert(( std::is_convertible<const Array&, const char*>::value), "");
+
+    static_assert((std::is_convertible<Array, StringType>::value), "");
+    static_assert((std::is_convertible<char(&)[], StringType>::value), "");
+
+    // char
+    test_is_not_convertible<char, void> ();
+    test_is_not_convertible<char, Function> ();
+    test_is_not_convertible<char, Function&> ();
+    test_is_not_convertible<char, Function*> ();
+    test_is_not_convertible<char, Array> ();
+    test_is_not_convertible<char, Array&> ();
+
+    test_is_convertible<char, char> ();
+
+    static_assert((!std::is_convertible<char, char&>::value), "");
+    static_assert(( std::is_convertible<char, const char&>::value), "");
+    static_assert((!std::is_convertible<const char, char&>::value), "");
+    static_assert(( std::is_convertible<const char, const char&>::value), "");
+
+    test_is_not_convertible<char, char*> ();
+
+    // char&
+    test_is_not_convertible<char&, void> ();
+    test_is_not_convertible<char&, Function> ();
+    test_is_not_convertible<char&, Function&> ();
+    test_is_not_convertible<char&, Function*> ();
+    test_is_not_convertible<char&, Array> ();
+    test_is_not_convertible<char&, Array&> ();
+
+    test_is_convertible<char&, char> ();
+
+    static_assert(( std::is_convertible<char&, char&>::value), "");
+    static_assert(( std::is_convertible<char&, const char&>::value), "");
+    static_assert((!std::is_convertible<const char&, char&>::value), "");
+    static_assert(( std::is_convertible<const char&, const char&>::value), "");
+
+    test_is_not_convertible<char&, char*> ();
+
+    // char*
+    test_is_not_convertible<char*, void> ();
+    test_is_not_convertible<char*, Function> ();
+    test_is_not_convertible<char*, Function&> ();
+    test_is_not_convertible<char*, Function*> ();
+    test_is_not_convertible<char*, Array> ();
+    test_is_not_convertible<char*, Array&> ();
+
+    test_is_not_convertible<char*, char> ();
+    test_is_not_convertible<char*, char&> ();
+
+    static_assert(( std::is_convertible<char*, char*>::value), "");
+    static_assert(( std::is_convertible<char*, const char*>::value), "");
+    static_assert((!std::is_convertible<const char*, char*>::value), "");
+    static_assert(( std::is_convertible<const char*, const char*>::value), "");
+
+    // NonCopyable
+    static_assert((std::is_convertible<NonCopyable&, NonCopyable&>::value), "");
+    static_assert((std::is_convertible<NonCopyable&, const NonCopyable&>::value), "");
+    static_assert((std::is_convertible<NonCopyable&, const volatile NonCopyable&>::value), "");
+    static_assert((std::is_convertible<NonCopyable&, volatile NonCopyable&>::value), "");
+    static_assert((std::is_convertible<const NonCopyable&, const NonCopyable&>::value), "");
+    static_assert((std::is_convertible<const NonCopyable&, const volatile NonCopyable&>::value), "");
+    static_assert((std::is_convertible<volatile NonCopyable&, const volatile NonCopyable&>::value), "");
+    static_assert((std::is_convertible<const volatile NonCopyable&, const volatile NonCopyable&>::value), "");
+    static_assert((!std::is_convertible<const NonCopyable&, NonCopyable&>::value), "");
+
+    // This test requires Access control SFINAE which we only have in C++11 or when
+    // we are using the compiler builtin for is_convertible.
+    test_is_not_convertible<NonCopyable&, NonCopyable>();
+
+
+    // Ensure that CannotInstantiate is not instantiated by is_convertible when it is not needed.
+    // For example CannotInstantiate is instantiated as a part of ADL lookup for arguments of type CannotInstantiate*.
+    static_assert((std::is_convertible<CannotInstantiate<int>*, CannotInstantiate<int>*>::value), "");
+
+    // Test for PR13592
+    static_assert(!std::is_convertible<abstract, abstract>::value, "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_convertible_fallback.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_convertible_fallback.pass.cpp
new file mode 100644
index 0000000..28495cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_convertible_fallback.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// ADDITIONAL_COMPILE_FLAGS: -D _LIBCPP_USE_IS_CONVERTIBLE_FALLBACK
+
+// type_traits
+
+// is_convertible
+
+// Test the fallback implementation.
+
+// libc++ provides a fallback implementation of the compiler trait
+// `__is_convertible` with the same name when clang doesn't.
+// Because this test forces the use of the fallback even when clang provides
+// it causing a keyword incompatibility.
+
+#include "test_macros.h"
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wkeyword-compat")
+
+#include "is_convertible.pass.cpp"
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable.pass.cpp
new file mode 100644
index 0000000..32db9d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable.pass.cpp
@@ -0,0 +1,245 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// is_invocable
+
+// Most testing of is_invocable is done within the [meta.trans.other] result_of
+// tests.
+
+// Fn and all types in the template parameter pack ArgTypes shall be
+//  complete types, cv void, or arrays of unknown bound.
+
+#include <type_traits>
+#include <functional>
+#include <memory>
+#include <vector>
+
+#include "test_macros.h"
+
+struct Tag {};
+struct DerFromTag : Tag {};
+
+struct Implicit {
+  Implicit(int) {}
+};
+
+struct Explicit {
+  explicit Explicit(int) {}
+};
+
+struct NotCallableWithInt {
+  int operator()(int) = delete;
+  int operator()(Tag) { return 42; }
+};
+
+struct Sink {
+  template <class ...Args>
+  void operator()(Args&&...) const {}
+};
+
+int main(int, char**) {
+  using AbominableFunc = void(...) const;
+
+  //  Non-callable things
+  {
+    static_assert(!std::is_invocable<void>::value, "");
+    static_assert(!std::is_invocable<const void>::value, "");
+    static_assert(!std::is_invocable<volatile void>::value, "");
+    static_assert(!std::is_invocable<const volatile void>::value, "");
+    static_assert(!std::is_invocable<std::nullptr_t>::value, "");
+    static_assert(!std::is_invocable<int>::value, "");
+    static_assert(!std::is_invocable<double>::value, "");
+
+    static_assert(!std::is_invocable<int[]>::value, "");
+    static_assert(!std::is_invocable<int[3]>::value, "");
+
+    static_assert(!std::is_invocable<int*>::value, "");
+    static_assert(!std::is_invocable<const int*>::value, "");
+    static_assert(!std::is_invocable<int const*>::value, "");
+
+    static_assert(!std::is_invocable<int&>::value, "");
+    static_assert(!std::is_invocable<const int&>::value, "");
+    static_assert(!std::is_invocable<int&&>::value, "");
+
+    static_assert(!std::is_invocable<std::vector<int> >::value, "");
+    static_assert(!std::is_invocable<std::vector<int*> >::value, "");
+    static_assert(!std::is_invocable<std::vector<int**> >::value, "");
+
+    static_assert(!std::is_invocable<AbominableFunc>::value, "");
+
+    //  with parameters
+    static_assert(!std::is_invocable<int, int>::value, "");
+    static_assert(!std::is_invocable<int, double, float>::value, "");
+    static_assert(!std::is_invocable<int, char, float, double>::value, "");
+    static_assert(!std::is_invocable<Sink, AbominableFunc>::value, "");
+    static_assert(!std::is_invocable<Sink, void>::value, "");
+    static_assert(!std::is_invocable<Sink, const volatile void>::value,
+                  "");
+
+
+    static_assert(!std::is_invocable_r<int, void>::value, "");
+    static_assert(!std::is_invocable_r<int, const void>::value, "");
+    static_assert(!std::is_invocable_r<int, volatile void>::value, "");
+    static_assert(!std::is_invocable_r<int, const volatile void>::value, "");
+    static_assert(!std::is_invocable_r<int, std::nullptr_t>::value, "");
+    static_assert(!std::is_invocable_r<int, int>::value, "");
+    static_assert(!std::is_invocable_r<int, double>::value, "");
+
+    static_assert(!std::is_invocable_r<int, int[]>::value, "");
+    static_assert(!std::is_invocable_r<int, int[3]>::value, "");
+
+    static_assert(!std::is_invocable_r<int, int*>::value, "");
+    static_assert(!std::is_invocable_r<int, const int*>::value, "");
+    static_assert(!std::is_invocable_r<int, int const*>::value, "");
+
+    static_assert(!std::is_invocable_r<int, int&>::value, "");
+    static_assert(!std::is_invocable_r<int, const int&>::value, "");
+    static_assert(!std::is_invocable_r<int, int&&>::value, "");
+
+    static_assert(!std::is_invocable_r<int, std::vector<int> >::value, "");
+    static_assert(!std::is_invocable_r<int, std::vector<int*> >::value, "");
+    static_assert(!std::is_invocable_r<int, std::vector<int**> >::value, "");
+    static_assert(!std::is_invocable_r<void, AbominableFunc>::value, "");
+
+    //  with parameters
+    static_assert(!std::is_invocable_r<int, int, int>::value, "");
+    static_assert(!std::is_invocable_r<int, int, double, float>::value, "");
+    static_assert(!std::is_invocable_r<int, int, char, float, double>::value,
+                  "");
+    static_assert(!std::is_invocable_r<void, Sink, AbominableFunc>::value, "");
+    static_assert(!std::is_invocable_r<void, Sink, void>::value, "");
+    static_assert(!std::is_invocable_r<void, Sink, const volatile void>::value,
+                  "");
+  }
+  {
+    using Fn = int (Tag::*)(int);
+    using RFn = int (Tag::*)(int)&&;
+    // INVOKE bullet 1, 2 and 3
+    {
+      // Bullet 1
+      static_assert(std::is_invocable<Fn, Tag&, int>::value, "");
+      static_assert(std::is_invocable<Fn, DerFromTag&, int>::value, "");
+      static_assert(std::is_invocable<RFn, Tag&&, int>::value, "");
+      static_assert(!std::is_invocable<RFn, Tag&, int>::value, "");
+      static_assert(!std::is_invocable<Fn, Tag&>::value, "");
+      static_assert(!std::is_invocable<Fn, Tag const&, int>::value, "");
+    }
+    {
+      // Bullet 2
+      using T = std::reference_wrapper<Tag>;
+      using DT = std::reference_wrapper<DerFromTag>;
+      using CT = std::reference_wrapper<const Tag>;
+      static_assert(std::is_invocable<Fn, T&, int>::value, "");
+      static_assert(std::is_invocable<Fn, DT&, int>::value, "");
+      static_assert(std::is_invocable<Fn, const T&, int>::value, "");
+      static_assert(std::is_invocable<Fn, T&&, int>::value, "");
+      static_assert(!std::is_invocable<Fn, CT&, int>::value, "");
+      static_assert(!std::is_invocable<RFn, T, int>::value, "");
+    }
+    {
+      // Bullet 3
+      using T = Tag*;
+      using DT = DerFromTag*;
+      using CT = const Tag*;
+      using ST = std::unique_ptr<Tag>;
+      static_assert(std::is_invocable<Fn, T&, int>::value, "");
+      static_assert(std::is_invocable<Fn, DT&, int>::value, "");
+      static_assert(std::is_invocable<Fn, const T&, int>::value, "");
+      static_assert(std::is_invocable<Fn, T&&, int>::value, "");
+      static_assert(std::is_invocable<Fn, ST, int>::value, "");
+      static_assert(!std::is_invocable<Fn, CT&, int>::value, "");
+      static_assert(!std::is_invocable<RFn, T, int>::value, "");
+    }
+  }
+  {
+    // Bullets 4, 5 and 6
+    using Fn = int(Tag::*);
+    static_assert(!std::is_invocable<Fn>::value, "");
+    {
+      // Bullet 4
+      static_assert(std::is_invocable<Fn, Tag&>::value, "");
+      static_assert(std::is_invocable<Fn, DerFromTag&>::value, "");
+      static_assert(std::is_invocable<Fn, Tag&&>::value, "");
+      static_assert(std::is_invocable<Fn, Tag const&>::value, "");
+    }
+    {
+      // Bullet 5
+      using T = std::reference_wrapper<Tag>;
+      using DT = std::reference_wrapper<DerFromTag>;
+      using CT = std::reference_wrapper<const Tag>;
+      static_assert(std::is_invocable<Fn, T&>::value, "");
+      static_assert(std::is_invocable<Fn, DT&>::value, "");
+      static_assert(std::is_invocable<Fn, const T&>::value, "");
+      static_assert(std::is_invocable<Fn, T&&>::value, "");
+      static_assert(std::is_invocable<Fn, CT&>::value, "");
+    }
+    {
+      // Bullet 6
+      using T = Tag*;
+      using DT = DerFromTag*;
+      using CT = const Tag*;
+      using ST = std::unique_ptr<Tag>;
+      static_assert(std::is_invocable<Fn, T&>::value, "");
+      static_assert(std::is_invocable<Fn, DT&>::value, "");
+      static_assert(std::is_invocable<Fn, const T&>::value, "");
+      static_assert(std::is_invocable<Fn, T&&>::value, "");
+      static_assert(std::is_invocable<Fn, ST>::value, "");
+      static_assert(std::is_invocable<Fn, CT&>::value, "");
+    }
+  }
+  { // INVOKE bullet 7
+   {// Function pointer
+    using Fp = void(*)(Tag&, int);
+  static_assert(std::is_invocable<Fp, Tag&, int>::value, "");
+  static_assert(std::is_invocable<Fp, DerFromTag&, int>::value, "");
+  static_assert(!std::is_invocable<Fp, const Tag&, int>::value, "");
+  static_assert(!std::is_invocable<Fp>::value, "");
+  static_assert(!std::is_invocable<Fp, Tag&>::value, "");
+}
+{
+  // Function reference
+  using Fp = void (&)(Tag&, int);
+  static_assert(std::is_invocable<Fp, Tag&, int>::value, "");
+  static_assert(std::is_invocable<Fp, DerFromTag&, int>::value, "");
+  static_assert(!std::is_invocable<Fp, const Tag&, int>::value, "");
+  static_assert(!std::is_invocable<Fp>::value, "");
+  static_assert(!std::is_invocable<Fp, Tag&>::value, "");
+}
+{
+  // Function object
+  using Fn = NotCallableWithInt;
+  static_assert(std::is_invocable<Fn, Tag>::value, "");
+  static_assert(!std::is_invocable<Fn, int>::value, "");
+}
+}
+{
+  // Check that the conversion to the return type is properly checked
+  using Fn = int (*)();
+  static_assert(std::is_invocable_r<Implicit, Fn>::value, "");
+  static_assert(std::is_invocable_r<double, Fn>::value, "");
+  static_assert(std::is_invocable_r<const volatile void, Fn>::value, "");
+  static_assert(!std::is_invocable_r<Explicit, Fn>::value, "");
+}
+{
+  // Check for is_invocable_v
+  using Fn = void (*)();
+  static_assert(std::is_invocable_v<Fn>, "");
+  static_assert(!std::is_invocable_v<Fn, int>, "");
+}
+{
+  // Check for is_invocable_r_v
+  using Fn = void (*)();
+  static_assert(std::is_invocable_r_v<void, Fn>, "");
+  static_assert(!std::is_invocable_r_v<int, Fn>, "");
+}
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable_r.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable_r.compile.pass.cpp
new file mode 100644
index 0000000..778b24d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable_r.compile.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// is_invocable_r
+
+#include <type_traits>
+
+// Non-invocable types
+
+static_assert(!std::is_invocable_r<void, void>::value);
+static_assert(!std::is_invocable_r<void, int>::value);
+static_assert(!std::is_invocable_r<void, int*>::value);
+static_assert(!std::is_invocable_r<void, int&>::value);
+static_assert(!std::is_invocable_r<void, int&&>::value);
+
+// Result type matches
+
+template <typename T>
+T Return();
+
+static_assert(std::is_invocable_r<int, decltype(Return<int>)>::value);
+static_assert(std::is_invocable_r<char, decltype(Return<char>)>::value);
+static_assert(std::is_invocable_r<int*, decltype(Return<int*>)>::value);
+static_assert(std::is_invocable_r<int&, decltype(Return<int&>)>::value);
+static_assert(std::is_invocable_r<int&&, decltype(Return<int&&>)>::value);
+
+// void result type
+
+// Any actual return type should be useable with a result type of void.
+static_assert(std::is_invocable_r<void, decltype(Return<void>)>::value);
+static_assert(std::is_invocable_r<void, decltype(Return<int>)>::value);
+static_assert(std::is_invocable_r<void, decltype(Return<int*>)>::value);
+static_assert(std::is_invocable_r<void, decltype(Return<int&>)>::value);
+static_assert(std::is_invocable_r<void, decltype(Return<int&&>)>::value);
+
+// const- and volatile-qualified void should work too.
+static_assert(std::is_invocable_r<const void, decltype(Return<void>)>::value);
+static_assert(std::is_invocable_r<const void, decltype(Return<int>)>::value);
+static_assert(std::is_invocable_r<volatile void, decltype(Return<void>)>::value);
+static_assert(std::is_invocable_r<volatile void, decltype(Return<int>)>::value);
+static_assert(std::is_invocable_r<const volatile void, decltype(Return<void>)>::value);
+static_assert(std::is_invocable_r<const volatile void, decltype(Return<int>)>::value);
+
+// Conversion of result type
+
+// It should be possible to use a result type to which the actual return type
+// can be converted.
+static_assert(std::is_invocable_r<char, decltype(Return<int>)>::value);
+static_assert(std::is_invocable_r<const int*, decltype(Return<int*>)>::value);
+static_assert(std::is_invocable_r<void*, decltype(Return<int*>)>::value);
+static_assert(std::is_invocable_r<const int&, decltype(Return<int>)>::value);
+static_assert(std::is_invocable_r<const int&, decltype(Return<int&>)>::value);
+static_assert(std::is_invocable_r<const int&, decltype(Return<int&&>)>::value);
+static_assert(std::is_invocable_r<const char&, decltype(Return<int>)>::value);
+
+// But not a result type where the conversion doesn't work.
+static_assert(!std::is_invocable_r<int, decltype(Return<void>)>::value);
+static_assert(!std::is_invocable_r<int, decltype(Return<int*>)>::value);
+
+// Non-moveable result type
+
+// Define a type that can't be move-constructed.
+struct CantMove {
+  CantMove() = default;
+  CantMove(CantMove&&) = delete;
+};
+
+static_assert(!std::is_move_constructible_v<CantMove>);
+static_assert(!std::is_copy_constructible_v<CantMove>);
+
+// Define functions that return that type.
+CantMove MakeCantMove() { return {}; }
+CantMove MakeCantMoveWithArg(int) { return {}; }
+
+// Assumption check: it should be possible to call one of those functions and
+// use it to initialize a CantMove object.
+CantMove cant_move = MakeCantMove();
+
+// Therefore std::is_invocable_r should agree that they can be invoked to yield
+// a CantMove.
+static_assert(std::is_invocable_r<CantMove, decltype(MakeCantMove)>::value);
+static_assert(std::is_invocable_r<CantMove, decltype(MakeCantMoveWithArg), int>::value);
+
+// Of course it still shouldn't be possible to call one of the functions and get
+// back some other type.
+static_assert(!std::is_invocable_r<int, decltype(MakeCantMove)>::value);
+
+// And the argument types should still be important.
+static_assert(!std::is_invocable_r<CantMove, decltype(MakeCantMove), int>::value);
+static_assert(!std::is_invocable_r<CantMove, decltype(MakeCantMoveWithArg)>::value);
+
+// is_invocable_r
+
+// The struct form should be available too, not just the _v variant.
+static_assert(std::is_invocable_r<int, decltype(Return<int>)>::value);
+static_assert(!std::is_invocable_r<int*, decltype(Return<int>)>::value);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable_r_v.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable_r_v.compile.pass.cpp
new file mode 100644
index 0000000..32530f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_invocable_r_v.compile.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// is_invocable_r
+
+#include <type_traits>
+
+// Non-invocable types
+
+static_assert(!std::is_invocable_r_v<void, void>);
+static_assert(!std::is_invocable_r_v<void, int>);
+static_assert(!std::is_invocable_r_v<void, int*>);
+static_assert(!std::is_invocable_r_v<void, int&>);
+static_assert(!std::is_invocable_r_v<void, int&&>);
+
+// Result type matches
+
+template <typename T>
+T Return();
+
+static_assert(std::is_invocable_r_v<int, decltype(Return<int>)>);
+static_assert(std::is_invocable_r_v<char, decltype(Return<char>)>);
+static_assert(std::is_invocable_r_v<int*, decltype(Return<int*>)>);
+static_assert(std::is_invocable_r_v<int&, decltype(Return<int&>)>);
+static_assert(std::is_invocable_r_v<int&&, decltype(Return<int&&>)>);
+
+// void result type
+
+// Any actual return type should be useable with a result type of void.
+static_assert(std::is_invocable_r_v<void, decltype(Return<void>)>);
+static_assert(std::is_invocable_r_v<void, decltype(Return<int>)>);
+static_assert(std::is_invocable_r_v<void, decltype(Return<int*>)>);
+static_assert(std::is_invocable_r_v<void, decltype(Return<int&>)>);
+static_assert(std::is_invocable_r_v<void, decltype(Return<int&&>)>);
+
+// const- and volatile-qualified void should work too.
+static_assert(std::is_invocable_r_v<const void, decltype(Return<void>)>);
+static_assert(std::is_invocable_r_v<const void, decltype(Return<int>)>);
+static_assert(std::is_invocable_r_v<volatile void, decltype(Return<void>)>);
+static_assert(std::is_invocable_r_v<volatile void, decltype(Return<int>)>);
+static_assert(std::is_invocable_r_v<const volatile void, decltype(Return<void>)>);
+static_assert(std::is_invocable_r_v<const volatile void, decltype(Return<int>)>);
+
+// Conversion of result type
+
+// It should be possible to use a result type to which the actual return type
+// can be converted.
+static_assert(std::is_invocable_r_v<char, decltype(Return<int>)>);
+static_assert(std::is_invocable_r_v<const int*, decltype(Return<int*>)>);
+static_assert(std::is_invocable_r_v<void*, decltype(Return<int*>)>);
+static_assert(std::is_invocable_r_v<const int&, decltype(Return<int>)>);
+static_assert(std::is_invocable_r_v<const int&, decltype(Return<int&>)>);
+static_assert(std::is_invocable_r_v<const int&, decltype(Return<int&&>)>);
+static_assert(std::is_invocable_r_v<const char&, decltype(Return<int>)>);
+
+// But not a result type where the conversion doesn't work.
+static_assert(!std::is_invocable_r_v<int, decltype(Return<void>)>);
+static_assert(!std::is_invocable_r_v<int, decltype(Return<int*>)>);
+
+// Non-moveable result type
+
+// Define a type that can't be move-constructed.
+struct CantMove {
+  CantMove() = default;
+  CantMove(CantMove&&) = delete;
+};
+
+static_assert(!std::is_move_constructible_v<CantMove>);
+static_assert(!std::is_copy_constructible_v<CantMove>);
+
+// Define functions that return that type.
+CantMove MakeCantMove() { return {}; }
+CantMove MakeCantMoveWithArg(int) { return {}; }
+
+// Assumption check: it should be possible to call one of those functions and
+// use it to initialize a CantMove object.
+CantMove cant_move = MakeCantMove();
+
+// Therefore std::is_invocable_r should agree that they can be invoked to yield
+// a CantMove.
+static_assert(std::is_invocable_r_v<CantMove, decltype(MakeCantMove)>);
+static_assert(std::is_invocable_r_v<CantMove, decltype(MakeCantMoveWithArg), int>);
+
+// Of course it still shouldn't be possible to call one of the functions and get
+// back some other type.
+static_assert(!std::is_invocable_r_v<int, decltype(MakeCantMove)>);
+
+// And the argument types should still be important.
+static_assert(!std::is_invocable_r_v<CantMove, decltype(MakeCantMove), int>);
+static_assert(!std::is_invocable_r_v<CantMove, decltype(MakeCantMoveWithArg)>);
+
+// is_invocable_r
+
+// The struct form should be available too, not just the _v variant.
+static_assert(std::is_invocable_r<int, decltype(Return<int>)>::value);
+static_assert(!std::is_invocable_r<int*, decltype(Return<int>)>::value);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_nothrow_convertible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_nothrow_convertible.pass.cpp
new file mode 100644
index 0000000..935d789
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_nothrow_convertible.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// <type_traits>
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+struct B {
+public:
+    operator A() { return a; } A a;
+};
+
+class C { };
+class D {
+public:
+    operator C() noexcept { return c; } C c;
+};
+
+int main(int, char**) {
+    static_assert((std::is_nothrow_convertible<int, double>::value), "");
+    static_assert(!(std::is_nothrow_convertible<int, char*>::value), "");
+
+    static_assert(!(std::is_nothrow_convertible<A, B>::value), "");
+    static_assert((std::is_nothrow_convertible<D, C>::value), "");
+
+    static_assert((std::is_nothrow_convertible_v<int, double>), "");
+    static_assert(!(std::is_nothrow_convertible_v<int, char*>), "");
+
+    static_assert(!(std::is_nothrow_convertible_v<A, B>), "");
+    static_assert((std::is_nothrow_convertible_v<D, C>), "");
+
+    static_assert((std::is_nothrow_convertible_v<const void, void>), "");
+    static_assert((std::is_nothrow_convertible_v<volatile void, void>), "");
+    static_assert((std::is_nothrow_convertible_v<void, const void>), "");
+    static_assert((std::is_nothrow_convertible_v<void, volatile void>), "");
+
+    static_assert(!(std::is_nothrow_convertible_v<int[], double[]>), "");
+    static_assert(!(std::is_nothrow_convertible_v<int[], int[]>), "");
+    static_assert(!(std::is_nothrow_convertible_v<int[10], int[10]>), "");
+    static_assert(!(std::is_nothrow_convertible_v<int[10], double[10]>), "");
+    static_assert(!(std::is_nothrow_convertible_v<int[5], double[10]>), "");
+    static_assert(!(std::is_nothrow_convertible_v<int[10], A[10]>), "");
+
+    typedef void V();
+    typedef int I();
+    static_assert(!(std::is_nothrow_convertible_v<V, V>), "");
+    static_assert(!(std::is_nothrow_convertible_v<V, I>), "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_nothrow_invocable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_nothrow_invocable.pass.cpp
new file mode 100644
index 0000000..fa6048e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_nothrow_invocable.pass.cpp
@@ -0,0 +1,221 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// is_nothrow_invocable
+
+#include <type_traits>
+#include <functional>
+#include <vector>
+
+#include "test_macros.h"
+
+struct Tag {};
+
+struct Implicit {
+  Implicit(int) noexcept {}
+};
+
+struct ThrowsImplicit {
+  ThrowsImplicit(int) {}
+};
+
+struct Explicit {
+  explicit Explicit(int) noexcept {}
+};
+
+template <bool IsNoexcept, class Ret, class... Args>
+struct CallObject {
+  Ret operator()(Args&&...) const noexcept(IsNoexcept);
+};
+
+struct Sink {
+  template <class... Args>
+  void operator()(Args&&...) const noexcept {}
+};
+
+template <class Fn, class... Args>
+constexpr bool throws_invocable() {
+  return std::is_invocable<Fn, Args...>::value &&
+         !std::is_nothrow_invocable<Fn, Args...>::value;
+}
+
+template <class Ret, class Fn, class... Args>
+constexpr bool throws_invocable_r() {
+  return std::is_invocable_r<Ret, Fn, Args...>::value &&
+         !std::is_nothrow_invocable_r<Ret, Fn, Args...>::value;
+}
+
+void test_noexcept_function_pointers() {
+  struct Dummy {
+    void foo() noexcept {}
+    static void bar() noexcept {}
+  };
+  // Check that PMF's and function pointers actually work and that
+  // is_nothrow_invocable returns true for noexcept PMF's and function
+  // pointers.
+  static_assert(std::is_nothrow_invocable<decltype(&Dummy::foo), Dummy&>::value, "");
+  static_assert(std::is_nothrow_invocable<decltype(&Dummy::bar)>::value, "");
+}
+
+int main(int, char**) {
+  using AbominableFunc = void(...) const noexcept;
+  //  Non-callable things
+  {
+    static_assert(!std::is_nothrow_invocable<void>::value, "");
+    static_assert(!std::is_nothrow_invocable<const void>::value, "");
+    static_assert(!std::is_nothrow_invocable<volatile void>::value, "");
+    static_assert(!std::is_nothrow_invocable<const volatile void>::value, "");
+    static_assert(!std::is_nothrow_invocable<std::nullptr_t>::value, "");
+    static_assert(!std::is_nothrow_invocable<int>::value, "");
+    static_assert(!std::is_nothrow_invocable<double>::value, "");
+
+    static_assert(!std::is_nothrow_invocable<int[]>::value, "");
+    static_assert(!std::is_nothrow_invocable<int[3]>::value, "");
+
+    static_assert(!std::is_nothrow_invocable<int*>::value, "");
+    static_assert(!std::is_nothrow_invocable<const int*>::value, "");
+    static_assert(!std::is_nothrow_invocable<int const*>::value, "");
+
+    static_assert(!std::is_nothrow_invocable<int&>::value, "");
+    static_assert(!std::is_nothrow_invocable<const int&>::value, "");
+    static_assert(!std::is_nothrow_invocable<int&&>::value, "");
+
+    static_assert(!std::is_nothrow_invocable<int, std::vector<int> >::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable<int, std::vector<int*> >::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable<int, std::vector<int**> >::value,
+                  "");
+
+    static_assert(!std::is_nothrow_invocable<AbominableFunc>::value, "");
+
+    //  with parameters
+    static_assert(!std::is_nothrow_invocable<int, int>::value, "");
+    static_assert(!std::is_nothrow_invocable<int, double, float>::value, "");
+    static_assert(!std::is_nothrow_invocable<int, char, float, double>::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable<Sink, AbominableFunc>::value, "");
+    static_assert(!std::is_nothrow_invocable<Sink, void>::value, "");
+    static_assert(!std::is_nothrow_invocable<Sink, const volatile void>::value,
+                  "");
+
+    static_assert(!std::is_nothrow_invocable_r<int, void>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, const void>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, volatile void>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, const volatile void>::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable_r<int, std::nullptr_t>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, int>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, double>::value, "");
+
+    static_assert(!std::is_nothrow_invocable_r<int, int[]>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, int[3]>::value, "");
+
+    static_assert(!std::is_nothrow_invocable_r<int, int*>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, const int*>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, int const*>::value, "");
+
+    static_assert(!std::is_nothrow_invocable_r<int, int&>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, const int&>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, int&&>::value, "");
+
+    static_assert(!std::is_nothrow_invocable_r<int, std::vector<int> >::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable_r<int, std::vector<int*> >::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable_r<int, std::vector<int**> >::value,
+                  "");
+    static_assert(!std::is_nothrow_invocable_r<void, AbominableFunc>::value,
+                  "");
+
+    //  with parameters
+    static_assert(!std::is_nothrow_invocable_r<int, int, int>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<int, int, double, float>::value,
+                  "");
+    static_assert(
+        !std::is_nothrow_invocable_r<int, int, char, float, double>::value, "");
+    static_assert(
+        !std::is_nothrow_invocable_r<void, Sink, AbominableFunc>::value, "");
+    static_assert(!std::is_nothrow_invocable_r<void, Sink, void>::value, "");
+    static_assert(
+        !std::is_nothrow_invocable_r<void, Sink, const volatile void>::value,
+        "");
+  }
+
+  {
+    // Check that the conversion to the return type is properly checked
+    using Fn = CallObject<true, int>;
+    static_assert(std::is_nothrow_invocable_r<Implicit, Fn>::value, "");
+    static_assert(std::is_nothrow_invocable_r<double, Fn>::value, "");
+    static_assert(std::is_nothrow_invocable_r<const volatile void, Fn>::value,
+                  "");
+    static_assert(throws_invocable_r<ThrowsImplicit, Fn>(), "");
+    static_assert(!std::is_nothrow_invocable<Fn(), Explicit>(), "");
+  }
+  {
+    // Check that the conversion to the parameters is properly checked
+    using Fn = CallObject<true, void, const Implicit&, const ThrowsImplicit&>;
+    static_assert(
+        std::is_nothrow_invocable<Fn, Implicit&, ThrowsImplicit&>::value, "");
+    static_assert(std::is_nothrow_invocable<Fn, int, ThrowsImplicit&>::value,
+                  "");
+    static_assert(throws_invocable<Fn, int, int>(), "");
+    static_assert(!std::is_nothrow_invocable<Fn>::value, "");
+  }
+  {
+    // Check that the noexcept-ness of function objects is checked.
+    using Fn = CallObject<true, void>;
+    using Fn2 = CallObject<false, void>;
+    static_assert(std::is_nothrow_invocable<Fn>::value, "");
+    static_assert(throws_invocable<Fn2>(), "");
+  }
+  {
+    // Check that PMD derefs are noexcept
+    using Fn = int(Tag::*);
+    static_assert(std::is_nothrow_invocable<Fn, Tag&>::value, "");
+    static_assert(std::is_nothrow_invocable_r<Implicit, Fn, Tag&>::value, "");
+    static_assert(throws_invocable_r<ThrowsImplicit, Fn, Tag&>(), "");
+  }
+  {
+    // Check that it's fine if the result type is non-moveable.
+    struct CantMove {
+      CantMove() = default;
+      CantMove(CantMove&&) = delete;
+    };
+
+    static_assert(!std::is_move_constructible_v<CantMove>);
+    static_assert(!std::is_copy_constructible_v<CantMove>);
+
+    using Fn = CantMove() noexcept;
+
+    static_assert(std::is_nothrow_invocable_r<CantMove, Fn>::value);
+    static_assert(!std::is_nothrow_invocable_r<CantMove, Fn, int>::value);
+
+    static_assert(std::is_nothrow_invocable_r_v<CantMove, Fn>);
+    static_assert(!std::is_nothrow_invocable_r_v<CantMove, Fn, int>);
+  }
+  {
+    // Check for is_nothrow_invocable_v
+    using Fn = CallObject<true, int>;
+    static_assert(std::is_nothrow_invocable_v<Fn>, "");
+    static_assert(!std::is_nothrow_invocable_v<Fn, int>, "");
+  }
+  {
+    // Check for is_nothrow_invocable_r_v
+    using Fn = CallObject<true, int>;
+    static_assert(std::is_nothrow_invocable_r_v<void, Fn>, "");
+    static_assert(!std::is_nothrow_invocable_r_v<int, Fn, int>, "");
+  }
+  test_noexcept_function_pointers();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_same.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_same.pass.cpp
new file mode 100644
index 0000000..dd83f22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rel/is_same.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_same
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_is_same()
+{
+    static_assert(( std::is_same<T, U>::value), "");
+    static_assert((!std::is_same<const T, U>::value), "");
+    static_assert((!std::is_same<T, const U>::value), "");
+    static_assert(( std::is_same<const T, const U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_same_v<T, U>), "");
+    static_assert((!std::is_same_v<const T, U>), "");
+    static_assert((!std::is_same_v<T, const U>), "");
+    static_assert(( std::is_same_v<const T, const U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_same_ref()
+{
+    static_assert((std::is_same<T, U>::value), "");
+    static_assert((std::is_same<const T, U>::value), "");
+    static_assert((std::is_same<T, const U>::value), "");
+    static_assert((std::is_same<const T, const U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((std::is_same_v<T, U>), "");
+    static_assert((std::is_same_v<const T, U>), "");
+    static_assert((std::is_same_v<T, const U>), "");
+    static_assert((std::is_same_v<const T, const U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_same()
+{
+    static_assert((!std::is_same<T, U>::value), "");
+}
+
+template <class T>
+struct OverloadTest
+{
+    void fn(std::is_same<T, int>) { }
+    void fn(std::false_type) { }
+    void x() { fn(std::false_type()); }
+};
+
+class Class
+{
+public:
+    ~Class();
+};
+
+int main(int, char**)
+{
+    test_is_same<int, int>();
+    test_is_same<void, void>();
+    test_is_same<Class, Class>();
+    test_is_same<int*, int*>();
+    test_is_same_ref<int&, int&>();
+
+    test_is_not_same<int, void>();
+    test_is_not_same<void, Class>();
+    test_is_not_same<Class, int*>();
+    test_is_not_same<int*, int&>();
+    test_is_not_same<int&, int>();
+
+    OverloadTest<char> t;
+    (void)t;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rqmts/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rqmts/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.rqmts/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.arr/remove_all_extents.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.arr/remove_all_extents.pass.cpp
new file mode 100644
index 0000000..1a999bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.arr/remove_all_extents.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_all_extents
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+enum Enum {zero, one_};
+
+template <class T, class U>
+void test_remove_all_extents()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_all_extents<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::remove_all_extents_t<T>);
+#endif
+}
+
+int main(int, char**)
+{
+    test_remove_all_extents<int, int> ();
+    test_remove_all_extents<const Enum, const Enum> ();
+    test_remove_all_extents<int[], int> ();
+    test_remove_all_extents<const int[], const int> ();
+    test_remove_all_extents<int[3], int> ();
+    test_remove_all_extents<const int[3], const int> ();
+    test_remove_all_extents<int[][3], int> ();
+    test_remove_all_extents<const int[][3], const int> ();
+    test_remove_all_extents<int[2][3], int> ();
+    test_remove_all_extents<const int[2][3], const int> ();
+    test_remove_all_extents<int[1][2][3], int> ();
+    test_remove_all_extents<const int[1][2][3], const int> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.arr/remove_extent.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.arr/remove_extent.pass.cpp
new file mode 100644
index 0000000..1c6ba27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.arr/remove_extent.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_extent
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+enum Enum {zero, one_};
+
+template <class T, class U>
+void test_remove_extent()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_extent<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::remove_extent_t<T>);
+#endif
+}
+
+
+int main(int, char**)
+{
+    test_remove_extent<int, int> ();
+    test_remove_extent<const Enum, const Enum> ();
+    test_remove_extent<int[], int> ();
+    test_remove_extent<const int[], const int> ();
+    test_remove_extent<int[3], int> ();
+    test_remove_extent<const int[3], const int> ();
+    test_remove_extent<int[][3], int[3]> ();
+    test_remove_extent<const int[][3], const int[3]> ();
+    test_remove_extent<int[2][3], int[3]> ();
+    test_remove_extent<const int[2][3], const int[3]> ();
+    test_remove_extent<int[1][2][3], int[2][3]> ();
+    test_remove_extent<const int[1][2][3], const int[2][3]> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_const.pass.cpp
new file mode 100644
index 0000000..d377468
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_const.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// add_const
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_add_const_imp()
+{
+    ASSERT_SAME_TYPE(const U, typename std::add_const<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(const U,        std::add_const_t<T>);
+#endif
+}
+
+template <class T>
+void test_add_const()
+{
+    test_add_const_imp<T, const T>();
+    test_add_const_imp<const T, const T>();
+    test_add_const_imp<volatile T, volatile const T>();
+    test_add_const_imp<const volatile T, const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_add_const<void>();
+    test_add_const<int>();
+    test_add_const<int[3]>();
+    test_add_const<int&>();
+    test_add_const<const int&>();
+    test_add_const<int*>();
+    test_add_const<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_cv.pass.cpp
new file mode 100644
index 0000000..2a0cb20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_cv.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// add_cv
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_add_cv_imp()
+{
+    ASSERT_SAME_TYPE(const volatile U, typename std::add_cv<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(const volatile U,        std::add_cv_t<T>);
+#endif
+}
+
+template <class T>
+void test_add_cv()
+{
+    test_add_cv_imp<T, const volatile T>();
+    test_add_cv_imp<const T, const volatile T>();
+    test_add_cv_imp<volatile T, volatile const T>();
+    test_add_cv_imp<const volatile T, const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_add_cv<void>();
+    test_add_cv<int>();
+    test_add_cv<int[3]>();
+    test_add_cv<int&>();
+    test_add_cv<const int&>();
+    test_add_cv<int*>();
+    test_add_cv<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_volatile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_volatile.pass.cpp
new file mode 100644
index 0000000..83948d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_volatile.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// add_volatile
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_add_volatile_imp()
+{
+    ASSERT_SAME_TYPE(volatile U, typename std::add_volatile<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(volatile U,        std::add_volatile_t<T>);
+#endif
+}
+
+template <class T>
+void test_add_volatile()
+{
+    test_add_volatile_imp<T, volatile T>();
+    test_add_volatile_imp<const T, const volatile T>();
+    test_add_volatile_imp<volatile T, volatile T>();
+    test_add_volatile_imp<const volatile T, const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_add_volatile<void>();
+    test_add_volatile<int>();
+    test_add_volatile<int[3]>();
+    test_add_volatile<int&>();
+    test_add_volatile<const int&>();
+    test_add_volatile<int*>();
+    test_add_volatile<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_const.pass.cpp
new file mode 100644
index 0000000..b7b61fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_const.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_const
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_remove_const_imp()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_const<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::remove_const_t<T>);
+#endif
+}
+
+template <class T>
+void test_remove_const()
+{
+    test_remove_const_imp<T, T>();
+    test_remove_const_imp<const T, T>();
+    test_remove_const_imp<volatile T, volatile T>();
+    test_remove_const_imp<const volatile T, volatile T>();
+}
+
+int main(int, char**)
+{
+    test_remove_const<void>();
+    test_remove_const<int>();
+    test_remove_const<int[3]>();
+    test_remove_const<int&>();
+    test_remove_const<const int&>();
+    test_remove_const<int*>();
+    test_remove_const<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_cv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_cv.pass.cpp
new file mode 100644
index 0000000..ef4d7db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_cv.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_cv
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_remove_cv_imp()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_cv<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::remove_cv_t<T>);
+#endif
+}
+
+template <class T>
+void test_remove_cv()
+{
+    test_remove_cv_imp<T, T>();
+    test_remove_cv_imp<const T, T>();
+    test_remove_cv_imp<volatile T, T>();
+    test_remove_cv_imp<const volatile T, T>();
+}
+
+int main(int, char**)
+{
+    test_remove_cv<void>();
+    test_remove_cv<int>();
+    test_remove_cv<int[3]>();
+    test_remove_cv<int&>();
+    test_remove_cv<const int&>();
+    test_remove_cv<int*>();
+    test_remove_cv<const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_volatile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_volatile.pass.cpp
new file mode 100644
index 0000000..6ddb5a5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/remove_volatile.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_volatile
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_remove_volatile_imp()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_volatile<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::remove_volatile_t<T>);
+#endif
+}
+
+template <class T>
+void test_remove_volatile()
+{
+    test_remove_volatile_imp<T, T>();
+    test_remove_volatile_imp<const T, const T>();
+    test_remove_volatile_imp<volatile T, T>();
+    test_remove_volatile_imp<const volatile T, const T>();
+}
+
+int main(int, char**)
+{
+    test_remove_volatile<void>();
+    test_remove_volatile<int>();
+    test_remove_volatile<int[3]>();
+    test_remove_volatile<int&>();
+    test_remove_volatile<const int&>();
+    test_remove_volatile<int*>();
+    test_remove_volatile<volatile int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_storage.depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_storage.depr.verify.cpp
new file mode 100644
index 0000000..d8fa38a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_storage.depr.verify.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <type_traits>
+
+std::aligned_storage<1, 1>::type s2; // expected-warning {{'aligned_storage<1, 1>' is deprecated}}
+std::aligned_storage<3, 1>::type s3; // expected-warning {{'aligned_storage<3, 1>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_storage.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_storage.pass.cpp
new file mode 100644
index 0000000..35d1160
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_storage.pass.cpp
@@ -0,0 +1,337 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// aligned_storage
+//
+//  Issue 3034 added:
+//  The member typedef type shall be a trivial standard-layout type.
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <type_traits>
+#include <cstddef>       // for std::max_align_t
+#include "test_macros.h"
+
+// The following tests assume naturally aligned types exist
+// up to 64bit (double). For larger types, max_align_t should
+// give the correct alignment. For pre-C++11 testing, only
+// the lower bound is checked.
+
+#if TEST_STD_VER < 11
+struct natural_alignment {
+    long t1;
+    long long t2;
+    double t3;
+    long double t4;
+};
+#endif
+
+int main(int, char**)
+{
+    {
+    typedef std::aligned_storage<10, 1 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 1>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 1, "");
+    static_assert(sizeof(T1) == 10, "");
+    }
+    {
+    typedef std::aligned_storage<10, 2 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 2>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 2, "");
+    static_assert(sizeof(T1) == 10, "");
+    }
+    {
+    typedef std::aligned_storage<10, 4 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 4>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 12, "");
+    }
+    {
+    typedef std::aligned_storage<10, 8 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 8>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 8, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_storage<10, 16 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 16>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 16, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_storage<10, 32 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10, 32>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 32, "");
+    static_assert(sizeof(T1) == 32, "");
+    }
+    {
+    typedef std::aligned_storage<20, 32 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<20, 32>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 32, "");
+    static_assert(sizeof(T1) == 32, "");
+    }
+    {
+    typedef std::aligned_storage<40, 32 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<40, 32>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 32, "");
+    static_assert(sizeof(T1) == 64, "");
+    }
+    {
+    typedef std::aligned_storage<12, 16 >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<12, 16>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 16, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_storage<1>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<1>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 1, "");
+    static_assert(sizeof(T1) == 1, "");
+    }
+    {
+    typedef std::aligned_storage<2>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<2>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 2, "");
+    static_assert(sizeof(T1) == 2, "");
+    }
+    {
+    typedef std::aligned_storage<3>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<3>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 2, "");
+    static_assert(sizeof(T1) == 4, "");
+    }
+    {
+    typedef std::aligned_storage<4>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<4>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 4, "");
+    }
+    {
+    typedef std::aligned_storage<5>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<5>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 8, "");
+    }
+    {
+    typedef std::aligned_storage<7>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<7>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 8, "");
+    }
+    {
+    typedef std::aligned_storage<8>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<8>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 8, "");
+    static_assert(sizeof(T1) == 8, "");
+    }
+    {
+    typedef std::aligned_storage<9>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<9>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 8, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_storage<15>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<15>);
+#endif
+#if TEST_STD_VER <= 17
+    static_assert(std::is_pod<T1>::value, "");
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 8, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_storage<16>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<16>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+#if TEST_STD_VER >= 11
+    const size_t alignment = TEST_ALIGNOF(std::max_align_t) > 16 ?
+        16 : TEST_ALIGNOF(std::max_align_t);
+    static_assert(std::alignment_of<T1>::value == alignment, "");
+#else
+    static_assert(std::alignment_of<T1>::value >=
+                  TEST_ALIGNOF(natural_alignment), "");
+    static_assert(std::alignment_of<T1>::value <= 16, "");
+#endif
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_storage<17>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<17>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+#if TEST_STD_VER >= 11
+    const size_t alignment = TEST_ALIGNOF(std::max_align_t) > 16 ?
+        16 : TEST_ALIGNOF(std::max_align_t);
+    static_assert(std::alignment_of<T1>::value == alignment, "");
+    static_assert(sizeof(T1) == 16 + alignment, "");
+#else
+    static_assert(std::alignment_of<T1>::value >=
+                  TEST_ALIGNOF(natural_alignment), "");
+    static_assert(std::alignment_of<T1>::value <= 16, "");
+    static_assert(sizeof(T1) % TEST_ALIGNOF(natural_alignment) == 0, "");
+#endif
+    }
+    {
+    typedef std::aligned_storage<10>::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_storage_t<10>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 8, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+  {
+    const int Align = 8192;
+    typedef typename std::aligned_storage<1, Align>::type T1;
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == Align, "");
+    static_assert(sizeof(T1) == Align, "");
+  }
+#ifndef _WIN32
+  // Windows only supports alignment up to 8192 bytes.
+  {
+    const int Align = 65536;
+    typedef typename std::aligned_storage<1, Align>::type T1;
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == Align, "");
+    static_assert(sizeof(T1) == Align, "");
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.compile.fail.cpp
new file mode 100644
index 0000000..0e785d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.compile.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// type_traits
+
+// aligned_union<size_t Len, class ...Types>
+
+#include <type_traits>
+
+class A; // Incomplete
+
+int main(int, char**)
+{
+    typedef std::aligned_union<10, A>::type T1;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.depr.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.depr.verify.cpp
new file mode 100644
index 0000000..f3445ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.depr.verify.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <type_traits>
+
+std::aligned_union<1, int>::type s2; // expected-warning {{'aligned_union<1, int>' is deprecated}}
+std::aligned_union<3, char, char>::type s3; // expected-warning {{'aligned_union<3, char, char>' is deprecated}}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.pass.cpp
new file mode 100644
index 0000000..73ca065
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/aligned_union.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// type_traits
+
+// aligned_union<size_t Len, class ...Types>
+
+//  Issue 3034 added:
+//  The member typedef type shall be a trivial standard-layout type.
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::aligned_union<10, char >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, char>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 1, "");
+    static_assert(sizeof(T1) == 10, "");
+    }
+    {
+    typedef std::aligned_union<10, short >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, short>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 2, "");
+    static_assert(sizeof(T1) == 10, "");
+    }
+    {
+    typedef std::aligned_union<10, int >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, int>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 12, "");
+    }
+    {
+    typedef std::aligned_union<10, double >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, double>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 8, "");
+    static_assert(sizeof(T1) == 16, "");
+    }
+    {
+    typedef std::aligned_union<10, short, char >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, short, char>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 2, "");
+    static_assert(sizeof(T1) == 10, "");
+    }
+    {
+    typedef std::aligned_union<10, char, short >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<10, char, short>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 2, "");
+    static_assert(sizeof(T1) == 10, "");
+    }
+    {
+    typedef std::aligned_union<2, int, char, short >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<2, int, char, short>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 4, "");
+    }
+    {
+    typedef std::aligned_union<2, char, int, short >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<2, char, int, short>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 4, "");
+    }
+    {
+    typedef std::aligned_union<2, char, short, int >::type T1;
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(T1, std::aligned_union_t<2, char, short, int>);
+#endif
+    static_assert(std::is_trivial<T1>::value, "");
+    static_assert(std::is_standard_layout<T1>::value, "");
+    static_assert(std::alignment_of<T1>::value == 4, "");
+    static_assert(sizeof(T1) == 4, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/common_reference.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/common_reference.compile.pass.cpp
new file mode 100644
index 0000000..643d530
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/common_reference.compile.pass.cpp
@@ -0,0 +1,221 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// type_traits
+// common_reference
+
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T>
+constexpr bool has_type = requires {
+  typename T::type;
+};
+
+// A slightly simplified variation of std::tuple
+template <class...>
+struct UserTuple {};
+
+template <class, class, class>
+struct Tuple_helper {};
+template <class... Ts, class... Us>
+struct Tuple_helper<std::void_t<std::common_reference_t<Ts, Us>...>, UserTuple<Ts...>, UserTuple<Us...> > {
+  using type = UserTuple<std::common_reference_t<Ts, Us>...>;
+};
+
+namespace std {
+template <class... Ts, class... Us, template <class> class TQual, template <class> class UQual>
+struct basic_common_reference< ::UserTuple<Ts...>, ::UserTuple<Us...>, TQual, UQual>
+    : ::Tuple_helper<void, UserTuple<TQual<Ts>...>, UserTuple<UQual<Us>...> > {};
+} // namespace std
+
+struct X2 {};
+struct Y2 {};
+struct Z2 {};
+
+namespace std {
+template <>
+struct common_type<X2, Y2> {
+  using type = Z2;
+};
+template <>
+struct common_type<Y2, X2> {
+  using type = Z2;
+};
+} // namespace std
+
+// (6.1)
+//  -- If sizeof...(T) is zero, there shall be no member type.
+static_assert(!has_type<std::common_reference<> >);
+
+// (6.2)
+//  -- Otherwise, if sizeof...(T) is one, let T0 denote the sole type in the
+//     pack T. The member typedef type shall denote the same type as T0.
+static_assert(std::is_same_v<std::common_reference_t<void>, void>);
+static_assert(std::is_same_v<std::common_reference_t<int>, int>);
+static_assert(std::is_same_v<std::common_reference_t<int&>, int&>);
+static_assert(std::is_same_v<std::common_reference_t<int&&>, int&&>);
+static_assert(std::is_same_v<std::common_reference_t<int const>, int const>);
+static_assert(std::is_same_v<std::common_reference_t<int const&>, int const&>);
+static_assert(std::is_same_v<std::common_reference_t<int const&&>, int const&&>);
+static_assert(std::is_same_v<std::common_reference_t<int volatile[]>, int volatile[]>);
+static_assert(std::is_same_v<std::common_reference_t<int volatile (&)[]>, int volatile (&)[]>);
+static_assert(std::is_same_v<std::common_reference_t<int volatile (&&)[]>, int volatile (&&)[]>);
+static_assert(std::is_same_v<std::common_reference_t<void (&)()>, void (&)()>);
+static_assert(std::is_same_v<std::common_reference_t<void (&&)()>, void (&&)()>);
+
+// (6.3)
+//  -- Otherwise, if sizeof...(T) is two, let T1 and T2 denote the two types in
+//     the pack T. Then
+// (6.3.1)
+//    -- If T1 and T2 are reference types and COMMON_REF(T1, T2) is well-formed,
+//       then the member typedef type denotes that type.
+struct B {};
+struct D : B {};
+static_assert(std::is_same_v<std::common_reference_t<B&, D&>, B&>);
+static_assert(std::is_same_v<std::common_reference_t<B const&, D&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B&, D const&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B&, D const&, D&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B&, D&, B&, D&>, B&>);
+
+static_assert(std::is_same_v<std::common_reference_t<B&&, D&&>, B&&>);
+static_assert(std::is_same_v<std::common_reference_t<B const&&, D&&>, B const&&>);
+static_assert(std::is_same_v<std::common_reference_t<B&&, D const&&>, B const&&>);
+static_assert(std::is_same_v<std::common_reference_t<B&, D&&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B&, D const&&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B const&, D&&>, B const&>);
+
+static_assert(std::is_same_v<std::common_reference_t<B&&, D&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B&&, D const&>, B const&>);
+static_assert(std::is_same_v<std::common_reference_t<B const&&, D&>, B const&>);
+
+static_assert(std::is_same_v<std::common_reference_t<int const&, int volatile&>, int const volatile&>);
+static_assert(std::is_same_v<std::common_reference_t<int const volatile&&, int volatile&&>, int const volatile&&>);
+
+static_assert(std::is_same_v<std::common_reference_t<int (&)[10], int (&&)[10]>, int const (&)[10]>);
+static_assert(std::is_same_v<std::common_reference_t<int const (&)[10], int volatile (&)[10]>, int const volatile (&)[10]>);
+
+// (6.3.2)
+//    -- Otherwise, if basic_common_reference<remove_cvref_t<T1>,
+//       remove_cvref_t<T2>, XREF(T1), XREF(T2)>::type is well-formed, then the
+//       member typedef type denotes that type.
+static_assert(std::is_same_v<std::common_reference_t<const UserTuple<int, short>&, UserTuple<int&, short volatile&>>,
+                             UserTuple<const int&, const volatile short&>>);
+
+static_assert(std::is_same_v<std::common_reference_t<volatile UserTuple<int, short>&, const UserTuple<int, short>&>,
+                             const volatile UserTuple<int, short>&>);
+
+// (6.3.3)
+//    -- Otherwise, if COND_RES(T1, T2) is well-formed, then the member typedef
+//       type denotes that type.
+static_assert(std::is_same_v<std::common_reference_t<void, void>, void>);
+static_assert(std::is_same_v<std::common_reference_t<int, short>, int>);
+static_assert(std::is_same_v<std::common_reference_t<int, short&>, int>);
+static_assert(std::is_same_v<std::common_reference_t<int&, short&>, int>);
+static_assert(std::is_same_v<std::common_reference_t<int&, short>, int>);
+
+// tricky volatile reference case
+static_assert(std::is_same_v<std::common_reference_t<int&&, int volatile&>, int>);
+static_assert(std::is_same_v<std::common_reference_t<int volatile&, int&&>, int>);
+
+static_assert(std::is_same_v<std::common_reference_t<int (&)[10], int (&)[11]>, int*>);
+
+// https://github.com/ericniebler/stl2/issues/338
+struct MyIntRef {
+  MyIntRef(int&);
+};
+static_assert(std::is_same_v<std::common_reference_t<int&, MyIntRef>, MyIntRef>);
+
+// (6.3.4)
+//    -- Otherwise, if common_type_t<T1, T2> is well-formed, then the member
+//       typedef type denotes that type.
+struct moveonly {
+  moveonly() = default;
+  moveonly(moveonly&&) = default;
+  moveonly& operator=(moveonly&&) = default;
+};
+struct moveonly2 : moveonly {};
+
+static_assert(std::is_same_v<std::common_reference_t<moveonly const&, moveonly>, moveonly>);
+static_assert(std::is_same_v<std::common_reference_t<moveonly2 const&, moveonly>, moveonly>);
+static_assert(std::is_same_v<std::common_reference_t<moveonly const&, moveonly2>, moveonly>);
+
+static_assert(std::is_same_v<std::common_reference_t<X2&, Y2 const&>, Z2>);
+
+// (6.3.5)
+//    -- Otherwise, there shall be no member type.
+static_assert(!has_type<std::common_reference<volatile UserTuple<short>&, const UserTuple<int, short>&> >);
+
+// (6.4)
+//  -- Otherwise, if sizeof...(T) is greater than two, let T1, T2, and Rest,
+//     respectively, denote the first, second, and (pack of) remaining types
+//     comprising T. Let C be the type common_reference_t<T1, T2>. Then:
+// (6.4.1)
+//    -- If there is such a type C, the member typedef type shall denote the
+//       same type, if any, as common_reference_t<C, Rest...>.
+static_assert(std::is_same_v<std::common_reference_t<int, int, int>, int>);
+static_assert(std::is_same_v<std::common_reference_t<int&&, int const&, int volatile&>, int const volatile&>);
+static_assert(std::is_same_v<std::common_reference_t<int&&, int const&, float&>, float>);
+
+// (6.4.2)
+//    -- Otherwise, there shall be no member type.
+static_assert(!has_type<std::common_reference<int, short, int, char*> >);
+
+#if TEST_STD_VER > 20
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int, int>>, std::tuple<int, int>>);
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int, long>, std::tuple<long, int>>, std::tuple<long, long>>);
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int&, const int&>, std::tuple<const int&, int>>,
+                             std::tuple<const int&, int>>);
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int&, volatile int&>, std::tuple<volatile int&, int>>,
+                             std::tuple<volatile int&, int>>);
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int&, const volatile int&>, std::tuple<const volatile int&, int>>,
+                             std::tuple<const volatile int&, int>>);
+static_assert(!has_type<std::common_reference_t<std::tuple<const int&, volatile int&>, std::tuple<volatile int&, const int&>>>);
+
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int, X2>, std::tuple<int, Y2>>, std::tuple<int, Z2>>);
+static_assert(std::is_same_v<std::common_reference_t<std::tuple<int, X2>, std::tuple<int, Y2>>, std::tuple<int, Z2>>);
+static_assert(!has_type<std::common_reference<std::tuple<int, const X2>, std::tuple<float, const Z2>>>);
+static_assert(!has_type<std::common_reference<std::tuple<int, X2>, std::tuple<float, Z2>>>);
+static_assert(!has_type<std::common_reference<std::tuple<int, X2>, int, X2>>);
+
+struct A {};
+template <template<class> class TQual, template<class> class UQual>
+struct std::basic_common_reference<A, std::tuple<B>, TQual, UQual> {
+  using type = tuple<UQual<B>>;
+};
+
+static_assert(std::is_same_v<std::common_reference_t<A, std::tuple<B>, std::tuple<D>>, std::tuple<B>>);
+
+
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int, int>>,
+                             std::pair<int, int>>);
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int, long>, std::pair<long, int>>,
+                             std::pair<long, long>>);
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int&, const int&>, std::pair<const int&, int>>,
+                             std::pair<const int&, int>>);
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int&, volatile int&>, std::pair<volatile int&, int>>,
+                             std::pair<volatile int&, int>>);
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int&, const volatile int&>, std::pair<const volatile int&, int>>,
+                             std::pair<const volatile int&, int>>);
+static_assert(!has_type<std::common_reference_t<std::pair<const int&, volatile int&>,
+                        std::pair<volatile int&, const int&>>>);
+
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int, X2>, std::pair<int, Y2>>, std::pair<int, Z2>>);
+static_assert(std::is_same_v<std::common_reference_t<std::pair<int, X2>, std::pair<int, Y2>>, std::pair<int, Z2>>);
+static_assert(!has_type<std::common_reference<std::pair<int, const X2>, std::pair<float, const Z2>>>);
+static_assert(!has_type<std::common_reference<std::pair<int, X2>, std::pair<float, Z2>>>);
+static_assert(!has_type<std::common_reference<std::pair<int, X2>, int, X2>>);
+#endif
+
+int main(int, char**) { return 0; }
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/common_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/common_type.pass.cpp
new file mode 100644
index 0000000..66a29a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/common_type.pass.cpp
@@ -0,0 +1,380 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// common_type
+
+#include <functional>
+#include <memory>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct E {};
+
+template <class T>
+struct X { explicit X(T const&){} };
+
+template <class T>
+struct S { explicit S(T const&){} };
+
+template <class T>
+struct bad_reference_wrapper {
+    bad_reference_wrapper(T&);
+    bad_reference_wrapper(T&&) = delete;
+    operator T&() const;
+};
+
+namespace std
+{
+    template <typename T>
+    struct common_type<T, ::S<T> >
+    {
+        typedef S<T> type;
+    };
+
+    template <class T>
+    struct common_type< ::S<T>, T> {
+      typedef S<T> type;
+    };
+
+//  P0548
+    template <class T>
+    struct common_type< ::S<T>, ::S<T> > {
+      typedef S<T> type;
+    };
+
+    template <> struct common_type< ::S<long>, long> {};
+    template <> struct common_type<long, ::S<long> > {};
+    template <> struct common_type< ::X<double>, ::X<double> > {};
+}
+
+template <class> struct VoidT { typedef void type; };
+
+#if TEST_STD_VER < 11
+template <class Trait, class = void>
+struct no_common_type_imp : std::true_type {};
+
+template <class Trait>
+struct no_common_type_imp<Trait, typename VoidT<typename Trait::type>::type>
+    : std::false_type {};
+
+struct NoArgTag;
+
+template <class Tp = NoArgTag, class Up = NoArgTag, class Vp = NoArgTag>
+struct no_common_type : no_common_type_imp<std::common_type<Tp, Up, Vp> > {};
+template <class Tp, class Up>
+struct no_common_type<Tp, Up> : no_common_type_imp<std::common_type<Tp, Up> > {
+};
+template <class Tp>
+struct no_common_type<Tp> : no_common_type_imp<std::common_type<Tp> > {};
+template <>
+struct no_common_type<> : no_common_type_imp<std::common_type<> > {};
+#else
+template <class Tp>
+struct always_bool_imp { using type = bool; };
+template <class Tp> using always_bool = typename always_bool_imp<Tp>::type;
+
+template <class ...Args>
+constexpr auto no_common_type_imp(int)
+-> always_bool<typename std::common_type<Args...>::type>
+{ return false; }
+
+template <class ...Args>
+constexpr bool no_common_type_imp(long) { return true; }
+
+template <class ...Args>
+using no_common_type = std::integral_constant<bool, no_common_type_imp<Args...>(0)>;
+#endif
+
+template <class T1, class T2>
+struct TernaryOp {
+  static_assert((std::is_same<typename std::decay<T1>::type, T1>::value), "must be same");
+  static_assert((std::is_same<typename std::decay<T2>::type, T2>::value), "must be same");
+  typedef typename std::decay<
+      decltype(false ? std::declval<T1>() : std::declval<T2>())
+    >::type type;
+};
+
+// (4.1)
+// -- If sizeof...(T) is zero, there shall be no member type.
+void test_bullet_one() {
+  static_assert(no_common_type<>::value, "");
+}
+
+// (4.2)
+// -- If sizeof...(T) is one, let T0 denote the sole type constituting the pack
+//    T. The member typedef-name type shall denote the same type, if any, as
+//    common_type_t<T0, T0>; otherwise there shall be no member type.
+void test_bullet_two() {
+  static_assert((std::is_same<std::common_type<void>::type, void>::value), "");
+  static_assert((std::is_same<std::common_type<int>::type, int>::value), "");
+  static_assert((std::is_same<std::common_type<int const>::type, int>::value), "");
+  static_assert((std::is_same<std::common_type<int volatile[]>::type, int volatile*>::value), "");
+  static_assert((std::is_same<std::common_type<void(&)()>::type, void(*)()>::value), "");
+
+  static_assert((no_common_type<X<double> >::value), "");
+}
+
+template <class T, class U, class Expect>
+void test_bullet_three_one_imp() {
+  typedef typename std::decay<T>::type DT;
+  typedef typename std::decay<U>::type DU;
+  static_assert((!std::is_same<T, DT>::value || !std::is_same<U, DU>::value), "");
+  static_assert((std::is_same<typename std::common_type<T, U>::type, Expect>::value), "");
+  static_assert((std::is_same<typename std::common_type<U, T>::type, Expect>::value), "");
+  static_assert((std::is_same<typename std::common_type<T, U>::type, typename std::common_type<DT, DU>::type>::value), "");
+}
+
+// (4.3)
+// -- If sizeof...(T) is two, let the first and second types constituting T be
+//    denoted by T1 and T2, respectively, and let D1 and D2 denote the same types
+//    as decay_t<T1> and decay_t<T2>, respectively.
+// (4.3.1)
+//    -- If is_same_v<T1, D1> is false or is_same_v<T2, D2> is false, let C
+//       denote the same type, if any, as common_type_t<D1, D2>.
+void test_bullet_three_one() {
+  // Test that the user provided specialization of common_type is used after
+  // decaying T1.
+  {
+    typedef const S<int> T1;
+    typedef int T2;
+    test_bullet_three_one_imp<T1, T2, S<int> >();
+  }
+  // Test a user provided specialization that does not provide a typedef.
+  {
+    typedef const ::S<long> T1;
+    typedef long T2;
+    static_assert((no_common_type<T1, T2>::value), "");
+    static_assert((no_common_type<T2, T1>::value), "");
+  }
+  // Test that the ternary operator is not applied when the types are the
+  // same.
+  {
+    typedef const void T1;
+    typedef void Expect;
+    static_assert((std::is_same<std::common_type<T1, T1>::type, Expect>::value), "");
+    static_assert((std::is_same<std::common_type<T1, T1>::type, std::common_type<T1>::type>::value), "");
+  }
+  {
+    typedef int const T1[];
+    typedef int const* Expect;
+    static_assert((std::is_same<std::common_type<T1, T1>::type, Expect>::value), "");
+    static_assert((std::is_same<std::common_type<T1, T1>::type, std::common_type<T1>::type>::value), "");
+  }
+}
+
+// (4.3)
+// -- If sizeof...(T) is two, let the first and second types constituting T be
+//    denoted by T1 and T2, respectively, and let D1 and D2 denote the same types
+//    as decay_t<T1> and decay_t<T2>, respectively.
+// (4.3.1)
+//    -- If [...]
+// (4.3.2)
+//    -- [Note: [...]
+// (4.3.3)
+//    -- Otherwise, if
+//       decay_t<decltype(false ? declval<D1>() : declval<D2>())>
+//       denotes a type, let C denote that type.
+void test_bullet_three_three() {
+  {
+    typedef int const* T1;
+    typedef int* T2;
+    typedef TernaryOp<T1, T2>::type Expect;
+    static_assert((std::is_same<std::common_type<T1, T2>::type, Expect>::value), "");
+    static_assert((std::is_same<std::common_type<T2, T1>::type, Expect>::value), "");
+  }
+  // Test that there is no ::type member when the ternary op is ill-formed
+  {
+    typedef int T1;
+    typedef void T2;
+    static_assert((no_common_type<T1, T2>::value), "");
+    static_assert((no_common_type<T2, T1>::value), "");
+  }
+  {
+    typedef int T1;
+    typedef X<int> T2;
+    static_assert((no_common_type<T1, T2>::value), "");
+    static_assert((no_common_type<T2, T1>::value), "");
+  }
+  // Test that the ternary operator is not applied when the types are the
+  // same.
+  {
+    typedef void T1;
+    typedef void Expect;
+    static_assert((std::is_same<std::common_type<T1, T1>::type, Expect>::value), "");
+    static_assert((std::is_same<std::common_type<T1, T1>::type, std::common_type<T1>::type>::value), "");
+  }
+}
+
+// (4.3)
+// -- If sizeof...(T) is two, let the first and second types constituting T be
+//    denoted by T1 and T2, respectively, and let D1 and D2 denote the same types
+//    as decay_t<T1> and decay_t<T2>, respectively.
+// (4.3.1)
+//    -- If [...]
+// (4.3.2)
+//    -- [Note: [...]
+// (4.3.3)
+//    -- Otherwise
+// (4.3.4)
+//    -- Otherwise, if COND-RES(CREF(D1), CREF(D2)) denotes a type, let C
+//       denote the type decay_t<COND-RES(CREF(D1), CREF(D2))>.
+void test_bullet_three_four() {
+#if TEST_STD_VER >= 20
+  static_assert(std::is_same_v<std::common_type_t<int, bad_reference_wrapper<int>>, int>, "");
+  static_assert(std::is_same_v<std::common_type_t<bad_reference_wrapper<double>, double>, double>, "");
+  static_assert(std::is_same_v<std::common_type_t<const bad_reference_wrapper<double>, double>, double>, "");
+  static_assert(std::is_same_v<std::common_type_t<volatile bad_reference_wrapper<double>, double>, double>, "");
+  static_assert(std::is_same_v<std::common_type_t<const volatile bad_reference_wrapper<double>, double>, double>, "");
+
+  static_assert(std::is_same_v<std::common_type_t<bad_reference_wrapper<double>, const double>, double>, "");
+  static_assert(std::is_same_v<std::common_type_t<bad_reference_wrapper<double>, volatile double>, double>, "");
+  static_assert(std::is_same_v<std::common_type_t<bad_reference_wrapper<double>, const volatile double>, double>, "");
+
+  static_assert(std::is_same_v<std::common_type_t<bad_reference_wrapper<double>&, double>, double>, "");
+  static_assert(std::is_same_v<std::common_type_t<bad_reference_wrapper<double>, double&>, double>, "");
+#endif
+}
+
+// (4.4)
+// -- If sizeof...(T) is greater than two, let T1, T2, and R, respectively,
+// denote the first, second, and (pack of) remaining types constituting T.
+// Let C denote the same type, if any, as common_type_t<T1, T2>. If there is
+// such a type C, the member typedef-name type shall denote the
+// same type, if any, as common_type_t<C, R...>. Otherwise, there shall be
+// no member type.
+void test_bullet_four() {
+  { // test that there is no ::type member
+    static_assert((no_common_type<int, E>::value), "");
+    static_assert((no_common_type<int, int, E>::value), "");
+#if TEST_STD_VER >= 11
+    static_assert((no_common_type<int, int, E, int>::value), "");
+    static_assert((no_common_type<int, int, int, E>::value), "");
+#endif
+  }
+}
+
+#if TEST_STD_VER > 20
+struct A {};
+struct B {};
+struct C : B {};
+template<>
+struct std::common_type<A, std::tuple<B>> {
+  using type = tuple<B>;
+};
+#endif
+
+int main(int, char**)
+{
+    static_assert((std::is_same<std::common_type<int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<char>::type, char>::value), "");
+#if TEST_STD_VER > 11
+    static_assert((std::is_same<std::common_type_t<int>,   int>::value), "");
+    static_assert((std::is_same<std::common_type_t<char>, char>::value), "");
+#endif
+
+    static_assert((std::is_same<std::common_type<               int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<const          int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<      volatile int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<const volatile int>::type, int>::value), "");
+
+    static_assert((std::is_same<std::common_type<int,           int>::type, int>::value), "");
+    static_assert((std::is_same<std::common_type<int,     const int>::type, int>::value), "");
+
+    static_assert((std::is_same<std::common_type<long,       const int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<const long,       int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<long,    volatile int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<volatile long,    int>::type, long>::value), "");
+    static_assert((std::is_same<std::common_type<const long, const int>::type, long>::value), "");
+
+    static_assert((std::is_same<std::common_type<double, char>::type, double>::value), "");
+    static_assert((std::is_same<std::common_type<short, char>::type, int>::value), "");
+#if TEST_STD_VER > 11
+    static_assert((std::is_same<std::common_type_t<double, char>, double>::value), "");
+    static_assert((std::is_same<std::common_type_t<short, char>, int>::value), "");
+#endif
+
+    static_assert((std::is_same<std::common_type<double, char, long long>::type, double>::value), "");
+    static_assert((std::is_same<std::common_type<unsigned, char, long long>::type, long long>::value), "");
+#if TEST_STD_VER > 11
+    static_assert((std::is_same<std::common_type_t<double, char, long long>, double>::value), "");
+    static_assert((std::is_same<std::common_type_t<unsigned, char, long long>, long long>::value), "");
+#endif
+
+    static_assert((std::is_same<std::common_type<               void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<const          void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<      volatile void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<const volatile void>::type, void>::value), "");
+
+    static_assert((std::is_same<std::common_type<void,       const void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<const void,       void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<void,    volatile void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<volatile void,    void>::type, void>::value), "");
+    static_assert((std::is_same<std::common_type<const void, const void>::type, void>::value), "");
+
+    static_assert((std::is_same<std::common_type<int, S<int> >::type, S<int> >::value), "");
+    static_assert((std::is_same<std::common_type<int, S<int>, S<int> >::type, S<int> >::value), "");
+    static_assert((std::is_same<std::common_type<int, int, S<int> >::type, S<int> >::value), "");
+
+
+  test_bullet_one();
+  test_bullet_two();
+  test_bullet_three_one();
+  test_bullet_three_three();
+  test_bullet_three_four();
+  test_bullet_four();
+
+    // P0548
+    static_assert((std::is_same<std::common_type<S<int> >::type,         S<int> >::value), "");
+    static_assert((std::is_same<std::common_type<S<int>, S<int> >::type, S<int> >::value), "");
+
+    static_assert((std::is_same<std::common_type<int>::type,                int>::value), "");
+    static_assert((std::is_same<std::common_type<const int>::type,          int>::value), "");
+    static_assert((std::is_same<std::common_type<volatile int>::type,       int>::value), "");
+    static_assert((std::is_same<std::common_type<const volatile int>::type, int>::value), "");
+
+    static_assert((std::is_same<std::common_type<int, int>::type,             int>::value), "");
+    static_assert((std::is_same<std::common_type<const int, int>::type,       int>::value), "");
+    static_assert((std::is_same<std::common_type<int, const int>::type,       int>::value), "");
+    static_assert((std::is_same<std::common_type<const int, const int>::type, int>::value), "");
+
+#if TEST_STD_VER >= 11
+    // Test that we're really variadic in C++11
+    static_assert(std::is_same<std::common_type<int, int, int, int, int, int, int, int>::type, int>::value, "");
+#endif
+
+#if TEST_STD_VER > 20
+    // P2321
+    static_assert(std::is_same_v<std::common_type_t<std::tuple<int>>, std::tuple<int>>);
+    static_assert(std::is_same_v<std::common_type_t<std::tuple<int>, std::tuple<long>>, std::tuple<long>>);
+    static_assert(std::is_same_v<std::common_type_t<std::tuple<const int>, std::tuple<const int>>, std::tuple<int>>);
+    static_assert(std::is_same_v<std::common_type_t<std::tuple<const int&>>, std::tuple<int>>);
+    static_assert(std::is_same_v<std::common_type_t<std::tuple<const volatile int&>, std::tuple<const volatile long&>>, std::tuple<long>>);
+
+    static_assert(std::is_same_v<std::common_type_t<A, std::tuple<B>, std::tuple<C>>, std::tuple<B>>);
+
+    static_assert(std::is_same_v<std::common_type_t<std::pair<int, int>>, std::pair<int, int>>);
+    static_assert(std::is_same_v<std::common_type_t<std::pair<int, long>, std::pair<long, int>>, std::pair<long, long>>);
+    static_assert(std::is_same_v<std::common_type_t<std::pair<const int, const long>,
+                                                    std::pair<const int, const long>>,
+                                                    std::pair<int, long>>);
+
+    static_assert(std::is_same_v<std::common_type_t<std::pair<const int&, const long&>>, std::pair<int, long>>);
+    static_assert(std::is_same_v<std::common_type_t<std::pair<const volatile int&, const volatile long&>,
+                                                    std::pair<const volatile long&, const volatile int&>>,
+                                                    std::pair<long, long>>);
+
+    static_assert(std::is_same_v<std::common_type_t<A, std::tuple<B>, std::tuple<C>>, std::tuple<B>>);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/conditional.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/conditional.pass.cpp
new file mode 100644
index 0000000..a03932e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/conditional.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// conditional
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    ASSERT_SAME_TYPE(char, std::conditional<true, char, int>::type);
+    ASSERT_SAME_TYPE(int,  std::conditional<false, char, int>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(char, std::conditional_t<true, char, int>);
+    ASSERT_SAME_TYPE(int,  std::conditional_t<false, char, int>);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/decay.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/decay.pass.cpp
new file mode 100644
index 0000000..d07a136
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/decay.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// decay
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_decay()
+{
+    ASSERT_SAME_TYPE(U, typename std::decay<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::decay_t<T>);
+#endif
+}
+
+int main(int, char**)
+{
+    test_decay<void, void>();
+    test_decay<int, int>();
+    test_decay<const volatile int, int>();
+    test_decay<int*, int*>();
+    test_decay<int&, int>();
+    test_decay<const volatile int&, int>();
+    test_decay<int[3], int*>();
+    test_decay<const int[3], const int*>();
+    test_decay<void(), void (*)()>();
+#if TEST_STD_VER > 11
+    test_decay<int&&, int>();
+    test_decay<const volatile int&&, int>();
+    test_decay<int(int) const, int(int) const>();
+    test_decay<int(int) volatile, int(int) volatile>();
+    test_decay<int(int)  &, int(int)  &>();
+    test_decay<int(int) &&, int(int) &&>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if.compile.fail.cpp
new file mode 100644
index 0000000..c033d1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// enable_if
+
+#include <type_traits>
+
+int main(int, char**)
+{
+    typedef std::enable_if<false>::type A;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if.pass.cpp
new file mode 100644
index 0000000..54a4c1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// enable_if
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    ASSERT_SAME_TYPE(void, std::enable_if<true>::type);
+    ASSERT_SAME_TYPE(int,  std::enable_if<true, int>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(void, std::enable_if_t<true, void>);
+    ASSERT_SAME_TYPE(int,  std::enable_if_t<true, int>);
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if2.compile.fail.cpp
new file mode 100644
index 0000000..e9cdbd2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/enable_if2.compile.fail.cpp
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// type_traits
+
+// enable_if
+
+#include <type_traits>
+
+int main(int, char**)
+{
+    typedef std::enable_if_t<false> A;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/remove_cvref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/remove_cvref.pass.cpp
new file mode 100644
index 0000000..8fae395
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/remove_cvref.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// type_traits
+
+// remove_cvref
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class U>
+void test_remove_cvref()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_cvref<T>::type);
+    ASSERT_SAME_TYPE(U,        std::remove_cvref_t<T>);
+}
+
+int main(int, char**)
+{
+    test_remove_cvref<void, void>();
+    test_remove_cvref<int, int>();
+    test_remove_cvref<const int, int>();
+    test_remove_cvref<const volatile int, int>();
+    test_remove_cvref<volatile int, int>();
+
+// Doesn't decay
+    test_remove_cvref<int[3],                 int[3]>();
+    test_remove_cvref<int const [3],          int[3]>();
+    test_remove_cvref<int volatile [3],       int[3]>();
+    test_remove_cvref<int const volatile [3], int[3]>();
+    test_remove_cvref<void(), void ()>();
+
+    test_remove_cvref<int &, int>();
+    test_remove_cvref<const int &, int>();
+    test_remove_cvref<const volatile int &, int>();
+    test_remove_cvref<volatile int &, int>();
+
+    test_remove_cvref<int*, int*>();
+    test_remove_cvref<int(int) const, int(int) const>();
+    test_remove_cvref<int(int) volatile, int(int) volatile>();
+    test_remove_cvref<int(int)  &, int(int)  &>();
+    test_remove_cvref<int(int) &&, int(int) &&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.deprecated.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.deprecated.verify.cpp
new file mode 100644
index 0000000..ddbddb8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.deprecated.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+
+// type_traits
+
+// result_of
+
+#include <type_traits>
+
+void f() {
+  [[maybe_unused]] std::result_of<int (*())()> a; // expected-warning {{'result_of<int (*())()>' is deprecated}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.pass.cpp
new file mode 100644
index 0000000..78ff8fb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of.pass.cpp
@@ -0,0 +1,375 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// result_of<Fn(ArgTypes...)>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <type_traits>
+#include <cassert>
+#include <functional>
+#include <memory>
+#include "test_macros.h"
+
+struct S
+{
+    typedef short (*FreeFunc)(long);
+    operator FreeFunc() const;
+    double operator()(char, int&);
+    double const& operator()(char, int&) const;
+    double volatile& operator()(char, int&) volatile;
+    double const volatile& operator()(char, int&) const volatile;
+};
+
+
+struct SD : public S { };
+
+struct NotDerived {};
+
+template <class Tp>
+struct Voider {
+    typedef void type;
+};
+
+template <class T, class = void>
+struct HasType : std::false_type {};
+
+template <class T>
+struct HasType<T, typename Voider<typename T::type>::type> : std::true_type {};
+
+#if TEST_STD_VER > 14
+template <typename T, typename U>
+struct test_invoke_result;
+
+template <typename Fn, typename ...Args, typename Ret>
+struct test_invoke_result<Fn(Args...), Ret>
+{
+    static void call()
+    {
+        static_assert(std::is_invocable<Fn, Args...>::value, "");
+        static_assert(std::is_invocable_r<Ret, Fn, Args...>::value, "");
+        ASSERT_SAME_TYPE(Ret, typename std::invoke_result<Fn, Args...>::type);
+    }
+};
+#endif
+
+template <class T, class U>
+void test_result_of()
+{
+    ASSERT_SAME_TYPE(U, typename std::result_of<T>::type);
+#if TEST_STD_VER > 14
+    test_invoke_result<T, U>::call();
+#endif
+}
+
+#if TEST_STD_VER > 14
+template <typename T>
+struct test_invoke_no_result;
+
+template <typename Fn, typename ...Args>
+struct test_invoke_no_result<Fn(Args...)>
+{
+    static void call()
+    {
+        static_assert(std::is_invocable<Fn, Args...>::value == false, "");
+        static_assert((!HasType<std::invoke_result<Fn, Args...> >::value), "");
+    }
+};
+#endif
+
+template <class T>
+void test_no_result()
+{
+#if TEST_STD_VER >= 11
+    static_assert((!HasType<std::result_of<T> >::value), "");
+#endif
+#if TEST_STD_VER > 14
+    test_invoke_no_result<T>::call();
+#endif
+}
+
+int main(int, char**)
+{
+    typedef NotDerived ND;
+    { // functor object
+    test_result_of<S(int), short> ();
+    test_result_of<S&(unsigned char, int&), double> ();
+    test_result_of<S const&(unsigned char, int&), double const &> ();
+    test_result_of<S volatile&(unsigned char, int&), double volatile&> ();
+    test_result_of<S const volatile&(unsigned char, int&), double const volatile&> ();
+    }
+    { // pointer to function
+    typedef bool        (&RF0)();
+    typedef bool*       (&RF1)(int);
+    typedef bool&       (&RF2)(int, int);
+    typedef bool const& (&RF3)(int, int, int);
+    typedef bool        (&RF4)(int, ...);
+    typedef bool        (*PF0)();
+    typedef bool*       (*PF1)(int);
+    typedef bool&       (*PF2)(int, int);
+    typedef bool const& (*PF3)(int, int, int);
+    typedef bool        (*PF4)(int, ...);
+    typedef bool        (*&PRF0)();
+    typedef bool*       (*&PRF1)(int);
+    typedef bool&       (*&PRF2)(int, int);
+    typedef bool const& (*&PRF3)(int, int, int);
+    typedef bool        (*&PRF4)(int, ...);
+    test_result_of<RF0(), bool>();
+    test_result_of<RF1(int), bool*>();
+    test_result_of<RF2(int, long), bool&>();
+    test_result_of<RF3(int, long, int), bool const&>();
+    test_result_of<RF4(int, float, void*), bool>();
+    test_result_of<PF0(), bool>();
+    test_result_of<PF1(int), bool*>();
+    test_result_of<PF2(int, long), bool&>();
+    test_result_of<PF3(int, long, int), bool const&>();
+    test_result_of<PF4(int, float, void*), bool>();
+    test_result_of<PRF0(), bool>();
+    test_result_of<PRF1(int), bool*>();
+    test_result_of<PRF2(int, long), bool&>();
+    test_result_of<PRF3(int, long, int), bool const&>();
+    test_result_of<PRF4(int, float, void*), bool>();
+    }
+    { // pointer to member function
+
+    typedef int         (S::*PMS0)();
+    typedef int*        (S::*PMS1)(long);
+    typedef int&        (S::*PMS2)(long, int);
+    typedef const int&  (S::*PMS3)(int, ...);
+    test_result_of<PMS0(                             S),   int> ();
+    test_result_of<PMS0(                             S&),  int> ();
+    test_result_of<PMS0(                             S*),  int> ();
+    test_result_of<PMS0(                             S*&), int> ();
+    test_result_of<PMS0(      std::reference_wrapper<S>),  int> ();
+    test_result_of<PMS0(const std::reference_wrapper<S>&), int> ();
+    test_result_of<PMS0(      std::reference_wrapper<SD>),  int> ();
+    test_result_of<PMS0(const std::reference_wrapper<SD>&), int> ();
+    test_result_of<PMS0(std::unique_ptr<S>),  int> ();
+    test_result_of<PMS0(std::unique_ptr<SD>), int> ();
+    test_no_result<PMS0(const          S&)>();
+    test_no_result<PMS0(volatile       S&)>();
+    test_no_result<PMS0(const volatile S&)>();
+    test_no_result<PMS0(ND &                           )>();
+    test_no_result<PMS0(const ND&                      )>();
+    test_no_result<PMS0(std::unique_ptr<S const>       )>();
+    test_no_result<PMS0(std::reference_wrapper<S const>)>();
+    test_no_result<PMS0(std::reference_wrapper<ND>     )>();
+    test_no_result<PMS0(std::unique_ptr<ND>            )>();
+
+    test_result_of<PMS1(                             S,   int), int*> ();
+    test_result_of<PMS1(                             S&,  int), int*> ();
+    test_result_of<PMS1(                             S*,  int), int*> ();
+    test_result_of<PMS1(                             S*&, int), int*> ();
+    test_result_of<PMS1(std::unique_ptr<S>,               int), int*> ();
+    test_result_of<PMS1(std::unique_ptr<SD>,              int), int*> ();
+    test_result_of<PMS1(std::reference_wrapper<S>,        int), int*> ();
+    test_result_of<PMS1(const std::reference_wrapper<S>&, int), int*> ();
+    test_result_of<PMS1(std::reference_wrapper<SD>,        int), int*> ();
+    test_result_of<PMS1(const std::reference_wrapper<SD>&, int), int*> ();
+    test_no_result<PMS1(const          S&, int)>();
+    test_no_result<PMS1(volatile       S&, int)>();
+    test_no_result<PMS1(const volatile S&, int)>();
+    test_no_result<PMS1(ND &,                            int)>();
+    test_no_result<PMS1(const ND&,                       int)>();
+    test_no_result<PMS1(std::unique_ptr<S const>,        int)>();
+    test_no_result<PMS1(std::reference_wrapper<S const>, int)>();
+    test_no_result<PMS1(std::reference_wrapper<ND>,      int)>();
+    test_no_result<PMS1(std::unique_ptr<ND>,             int)>();
+
+    test_result_of<PMS2(               S,   int, int), int&> ();
+    test_result_of<PMS2(               S&,  int, int), int&> ();
+    test_result_of<PMS2(               S*,  int, int), int&> ();
+    test_result_of<PMS2(               S*&, int, int), int&> ();
+    test_result_of<PMS2(std::unique_ptr<S>, int, int), int&> ();
+    test_result_of<PMS2(std::unique_ptr<SD>, int, int), int&> ();
+    test_result_of<PMS2(std::reference_wrapper<S>,         int, int), int&> ();
+    test_result_of<PMS2(const std::reference_wrapper<S>&,  int, int), int&> ();
+    test_result_of<PMS2(std::reference_wrapper<SD>,        int, int), int&> ();
+    test_result_of<PMS2(const std::reference_wrapper<SD>&, int, int), int&> ();
+    test_no_result<PMS2(const          S&, int, int)>();
+    test_no_result<PMS2(volatile       S&, int, int)>();
+    test_no_result<PMS2(const volatile S&, int, int)>();
+    test_no_result<PMS2(std::unique_ptr<S const>,   int, int)>();
+    test_no_result<PMS2(std::reference_wrapper<S const>, int, int)>();
+    test_no_result<PMS2(const ND&,                  int, int)>();
+    test_no_result<PMS2(std::reference_wrapper<ND>, int, int)>();
+    test_no_result<PMS2(std::unique_ptr<ND>,        int, int)>();
+
+    test_result_of<PMS3(S&, int), const int &>();
+    test_result_of<PMS3(S&, int, long), const int &>();
+
+    typedef int        (S::*PMS0C)() const;
+    typedef int*       (S::*PMS1C)(long) const;
+    typedef int&       (S::*PMS2C)(long, int) const;
+    typedef const int& (S::*PMS3C)(int, ...) const;
+    test_result_of<PMS0C(               S),   int> ();
+    test_result_of<PMS0C(               S&),  int> ();
+    test_result_of<PMS0C(const          S&),  int> ();
+    test_result_of<PMS0C(               S*),  int> ();
+    test_result_of<PMS0C(const          S*),  int> ();
+    test_result_of<PMS0C(               S*&), int> ();
+    test_result_of<PMS0C(const          S*&), int> ();
+    test_result_of<PMS0C(std::unique_ptr<S>), int> ();
+    test_result_of<PMS0C(std::unique_ptr<SD>), int> ();
+    test_result_of<PMS0C(std::reference_wrapper<S>              ), int> ();
+    test_result_of<PMS0C(std::reference_wrapper<const S>        ), int> ();
+    test_result_of<PMS0C(const std::reference_wrapper<S> &      ), int> ();
+    test_result_of<PMS0C(const std::reference_wrapper<const S> &), int> ();
+    test_result_of<PMS0C(std::reference_wrapper<SD>             ), int> ();
+    test_result_of<PMS0C(std::reference_wrapper<const SD>       ), int> ();
+    test_result_of<PMS0C(const std::reference_wrapper<SD> &     ), int> ();
+    test_result_of<PMS0C(const std::reference_wrapper<const SD> &), int> ();
+    test_no_result<PMS0C(volatile       S&)>();
+    test_no_result<PMS0C(const volatile S&)>();
+
+    test_result_of<PMS1C(               S,   int), int*> ();
+    test_result_of<PMS1C(               S&,  int), int*> ();
+    test_result_of<PMS1C(const          S&,  int), int*> ();
+    test_result_of<PMS1C(               S*,  int), int*> ();
+    test_result_of<PMS1C(const          S*,  int), int*> ();
+    test_result_of<PMS1C(               S*&, int), int*> ();
+    test_result_of<PMS1C(const          S*&, int), int*> ();
+    test_result_of<PMS1C(std::unique_ptr<S>, int), int*> ();
+    test_no_result<PMS1C(volatile       S&, int)>();
+    test_no_result<PMS1C(const volatile S&, int)>();
+
+    test_result_of<PMS2C(               S,   int, int), int&> ();
+    test_result_of<PMS2C(               S&,  int, int), int&> ();
+    test_result_of<PMS2C(const          S&,  int, int), int&> ();
+    test_result_of<PMS2C(               S*,  int, int), int&> ();
+    test_result_of<PMS2C(const          S*,  int, int), int&> ();
+    test_result_of<PMS2C(               S*&, int, int), int&> ();
+    test_result_of<PMS2C(const          S*&, int, int), int&> ();
+    test_result_of<PMS2C(std::unique_ptr<S>, int, int), int&> ();
+    test_no_result<PMS2C(volatile       S&, int, int)>();
+    test_no_result<PMS2C(const volatile S&, int, int)>();
+
+    test_result_of<PMS3C(S&, int), const int &>();
+    test_result_of<PMS3C(S&, int, long), const int &>();
+
+    typedef int       (S::*PMS0V)() volatile;
+    typedef int*       (S::*PMS1V)(long) volatile;
+    typedef int&       (S::*PMS2V)(long, int) volatile;
+    typedef const int& (S::*PMS3V)(int, ...) volatile;
+    test_result_of<PMS0V(               S),   int> ();
+    test_result_of<PMS0V(               S&),  int> ();
+    test_result_of<PMS0V(volatile       S&),  int> ();
+    test_result_of<PMS0V(               S*),  int> ();
+    test_result_of<PMS0V(volatile       S*),  int> ();
+    test_result_of<PMS0V(               S*&), int> ();
+    test_result_of<PMS0V(volatile       S*&), int> ();
+    test_result_of<PMS0V(std::unique_ptr<S>), int> ();
+    test_no_result<PMS0V(const          S&)>();
+    test_no_result<PMS0V(const volatile S&)>();
+
+    test_result_of<PMS1V(               S,   int), int*> ();
+    test_result_of<PMS1V(               S&,  int), int*> ();
+    test_result_of<PMS1V(volatile       S&,  int), int*> ();
+    test_result_of<PMS1V(               S*,  int), int*> ();
+    test_result_of<PMS1V(volatile       S*,  int), int*> ();
+    test_result_of<PMS1V(               S*&, int), int*> ();
+    test_result_of<PMS1V(volatile       S*&, int), int*> ();
+    test_result_of<PMS1V(std::unique_ptr<S>, int), int*> ();
+    test_no_result<PMS1V(const          S&, int)>();
+    test_no_result<PMS1V(const volatile S&, int)>();
+
+    test_result_of<PMS2V(               S,   int, int), int&> ();
+    test_result_of<PMS2V(               S&,  int, int), int&> ();
+    test_result_of<PMS2V(volatile       S&,  int, int), int&> ();
+    test_result_of<PMS2V(               S*,  int, int), int&> ();
+    test_result_of<PMS2V(volatile       S*,  int, int), int&> ();
+    test_result_of<PMS2V(               S*&, int, int), int&> ();
+    test_result_of<PMS2V(volatile       S*&, int, int), int&> ();
+    test_result_of<PMS2V(std::unique_ptr<S>, int, int), int&> ();
+    test_no_result<PMS2V(const          S&, int, int)>();
+    test_no_result<PMS2V(const volatile S&, int, int)>();
+
+    test_result_of<PMS3V(S&, int), const int &>();
+    test_result_of<PMS3V(S&, int, long), const int &>();
+
+    typedef int        (S::*PMS0CV)() const volatile;
+    typedef int*       (S::*PMS1CV)(long) const volatile;
+    typedef int&       (S::*PMS2CV)(long, int) const volatile;
+    typedef const int& (S::*PMS3CV)(int, ...) const volatile;
+    test_result_of<PMS0CV(               S),   int> ();
+    test_result_of<PMS0CV(               S&),  int> ();
+    test_result_of<PMS0CV(const          S&),  int> ();
+    test_result_of<PMS0CV(volatile       S&),  int> ();
+    test_result_of<PMS0CV(const volatile S&),  int> ();
+    test_result_of<PMS0CV(               S*),  int> ();
+    test_result_of<PMS0CV(const          S*),  int> ();
+    test_result_of<PMS0CV(volatile       S*),  int> ();
+    test_result_of<PMS0CV(const volatile S*),  int> ();
+    test_result_of<PMS0CV(               S*&), int> ();
+    test_result_of<PMS0CV(const          S*&), int> ();
+    test_result_of<PMS0CV(volatile       S*&), int> ();
+    test_result_of<PMS0CV(const volatile S*&), int> ();
+    test_result_of<PMS0CV(std::unique_ptr<S>), int> ();
+
+    test_result_of<PMS1CV(               S,   int), int*> ();
+    test_result_of<PMS1CV(               S&,  int), int*> ();
+    test_result_of<PMS1CV(const          S&,  int), int*> ();
+    test_result_of<PMS1CV(volatile       S&,  int), int*> ();
+    test_result_of<PMS1CV(const volatile S&,  int), int*> ();
+    test_result_of<PMS1CV(               S*,  int), int*> ();
+    test_result_of<PMS1CV(const          S*,  int), int*> ();
+    test_result_of<PMS1CV(volatile       S*,  int), int*> ();
+    test_result_of<PMS1CV(const volatile S*,  int), int*> ();
+    test_result_of<PMS1CV(               S*&, int), int*> ();
+    test_result_of<PMS1CV(const          S*&, int), int*> ();
+    test_result_of<PMS1CV(volatile       S*&, int), int*> ();
+    test_result_of<PMS1CV(const volatile S*&, int), int*> ();
+    test_result_of<PMS1CV(std::unique_ptr<S>, int), int*> ();
+
+    test_result_of<PMS2CV(               S,   int, int), int&> ();
+    test_result_of<PMS2CV(               S&,  int, int), int&> ();
+    test_result_of<PMS2CV(const          S&,  int, int), int&> ();
+    test_result_of<PMS2CV(volatile       S&,  int, int), int&> ();
+    test_result_of<PMS2CV(const volatile S&,  int, int), int&> ();
+    test_result_of<PMS2CV(               S*,  int, int), int&> ();
+    test_result_of<PMS2CV(const          S*,  int, int), int&> ();
+    test_result_of<PMS2CV(volatile       S*,  int, int), int&> ();
+    test_result_of<PMS2CV(const volatile S*,  int, int), int&> ();
+    test_result_of<PMS2CV(               S*&, int, int), int&> ();
+    test_result_of<PMS2CV(const          S*&, int, int), int&> ();
+    test_result_of<PMS2CV(volatile       S*&, int, int), int&> ();
+    test_result_of<PMS2CV(const volatile S*&, int, int), int&> ();
+    test_result_of<PMS2CV(std::unique_ptr<S>, int, int), int&> ();
+
+    test_result_of<PMS3CV(S&, int), const int &>();
+    test_result_of<PMS3CV(S&, int, long), const int &>();
+    }
+    { // pointer to member data
+    typedef char S::*PMD;
+    test_result_of<PMD(S&), char &>();
+    test_result_of<PMD(S*), char &>();
+    test_result_of<PMD(S* const), char &>();
+    test_result_of<PMD(const S&), const char&> ();
+    test_result_of<PMD(const S*), const char&> ();
+    test_result_of<PMD(volatile S&), volatile char&> ();
+    test_result_of<PMD(volatile S*), volatile char&> ();
+    test_result_of<PMD(const volatile S&), const volatile char&> ();
+    test_result_of<PMD(const volatile S*), const volatile char&> ();
+    test_result_of<PMD(SD&), char &>();
+    test_result_of<PMD(SD const&), const char&>();
+    test_result_of<PMD(SD*), char&>();
+    test_result_of<PMD(const SD*), const char&>();
+    test_result_of<PMD(std::unique_ptr<S>), char &>();
+    test_result_of<PMD(std::unique_ptr<S const>), const char&>();
+#if TEST_STD_VER >= 11
+    test_result_of<PMD(std::reference_wrapper<S>), char&>();
+    test_result_of<PMD(std::reference_wrapper<S const>), const char&>();
+#endif
+    test_no_result<PMD(ND&)>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of11.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of11.pass.cpp
new file mode 100644
index 0000000..c110091
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/result_of11.pass.cpp
@@ -0,0 +1,188 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+//
+// <functional>
+//
+// result_of<Fn(ArgTypes...)>
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <type_traits>
+#include <functional>
+#include <memory>
+#include <utility>
+#include "test_macros.h"
+
+// Ignore warnings about volatile in parameters being deprecated.
+// We know it is, but we still have to test it.
+#if defined(TEST_COMPILER_GCC)
+#   pragma GCC diagnostic ignored "-Wvolatile"
+#endif
+
+struct wat
+{
+    wat& operator*() { return *this; }
+    void foo();
+};
+
+struct F {};
+struct FD : public F {};
+
+#if TEST_STD_VER > 14
+template <typename T, typename U>
+struct test_invoke_result;
+
+template <typename Fn, typename ...Args, typename Ret>
+struct test_invoke_result<Fn(Args...), Ret>
+{
+    static void call()
+    {
+        static_assert(std::is_invocable<Fn, Args...>::value, "");
+        static_assert(std::is_invocable_r<Ret, Fn, Args...>::value, "");
+        ASSERT_SAME_TYPE(Ret, typename std::invoke_result<Fn, Args...>::type);
+        ASSERT_SAME_TYPE(Ret,        std::invoke_result_t<Fn, Args...>);
+    }
+};
+#endif
+
+template <class T, class U>
+void test_result_of_imp()
+{
+    ASSERT_SAME_TYPE(U, typename std::result_of<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U,        std::result_of_t<T>);
+#endif
+#if TEST_STD_VER > 14
+    test_invoke_result<T, U>::call();
+#endif
+}
+
+// Do not warn on deprecated uses of 'volatile' below.
+_LIBCPP_SUPPRESS_DEPRECATED_PUSH
+
+int main(int, char**)
+{
+    {
+    typedef char F::*PMD;
+    test_result_of_imp<PMD(F                &), char                &>();
+    test_result_of_imp<PMD(F const          &), char const          &>();
+    test_result_of_imp<PMD(F volatile       &), char volatile       &>();
+    test_result_of_imp<PMD(F const volatile &), char const volatile &>();
+
+    test_result_of_imp<PMD(F                &&), char                &&>();
+    test_result_of_imp<PMD(F const          &&), char const          &&>();
+    test_result_of_imp<PMD(F volatile       &&), char volatile       &&>();
+    test_result_of_imp<PMD(F const volatile &&), char const volatile &&>();
+
+    test_result_of_imp<PMD(F                ), char &&>();
+    test_result_of_imp<PMD(F const          ), char &&>();
+    test_result_of_imp<PMD(F volatile       ), char &&>();
+    test_result_of_imp<PMD(F const volatile ), char &&>();
+
+    test_result_of_imp<PMD(FD                &), char                &>();
+    test_result_of_imp<PMD(FD const          &), char const          &>();
+    test_result_of_imp<PMD(FD volatile       &), char volatile       &>();
+    test_result_of_imp<PMD(FD const volatile &), char const volatile &>();
+
+    test_result_of_imp<PMD(FD                &&), char                &&>();
+    test_result_of_imp<PMD(FD const          &&), char const          &&>();
+    test_result_of_imp<PMD(FD volatile       &&), char volatile       &&>();
+    test_result_of_imp<PMD(FD const volatile &&), char const volatile &&>();
+
+    test_result_of_imp<PMD(FD                ), char &&>();
+    test_result_of_imp<PMD(FD const          ), char &&>();
+    test_result_of_imp<PMD(FD volatile       ), char &&>();
+    test_result_of_imp<PMD(FD const volatile ), char &&>();
+
+    test_result_of_imp<PMD(std::unique_ptr<F>),        char &>();
+    test_result_of_imp<PMD(std::unique_ptr<F const>),  const char &>();
+    test_result_of_imp<PMD(std::unique_ptr<FD>),       char &>();
+    test_result_of_imp<PMD(std::unique_ptr<FD const>), const char &>();
+
+    test_result_of_imp<PMD(std::reference_wrapper<F>),        char &>();
+    test_result_of_imp<PMD(std::reference_wrapper<F const>),  const char &>();
+    test_result_of_imp<PMD(std::reference_wrapper<FD>),       char &>();
+    test_result_of_imp<PMD(std::reference_wrapper<FD const>), const char &>();
+    }
+    {
+    test_result_of_imp<int (F::* (F       &)) ()                &, int> ();
+    test_result_of_imp<int (F::* (F       &)) () const          &, int> ();
+    test_result_of_imp<int (F::* (F       &)) () volatile       &, int> ();
+    test_result_of_imp<int (F::* (F       &)) () const volatile &, int> ();
+    test_result_of_imp<int (F::* (F const &)) () const          &, int> ();
+    test_result_of_imp<int (F::* (F const &)) () const volatile &, int> ();
+    test_result_of_imp<int (F::* (F volatile &)) () volatile       &, int> ();
+    test_result_of_imp<int (F::* (F volatile &)) () const volatile &, int> ();
+    test_result_of_imp<int (F::* (F const volatile &)) () const volatile &, int> ();
+
+    test_result_of_imp<int (F::* (F       &&)) ()                &&, int> ();
+    test_result_of_imp<int (F::* (F       &&)) () const          &&, int> ();
+    test_result_of_imp<int (F::* (F       &&)) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (F       &&)) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (F const &&)) () const          &&, int> ();
+    test_result_of_imp<int (F::* (F const &&)) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (F volatile &&)) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (F volatile &&)) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (F const volatile &&)) () const volatile &&, int> ();
+
+    test_result_of_imp<int (F::* (F       )) ()                &&, int> ();
+    test_result_of_imp<int (F::* (F       )) () const          &&, int> ();
+    test_result_of_imp<int (F::* (F       )) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (F       )) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (F const )) () const          &&, int> ();
+    test_result_of_imp<int (F::* (F const )) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (F volatile )) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (F volatile )) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (F const volatile )) () const volatile &&, int> ();
+    }
+    {
+    test_result_of_imp<int (F::* (FD       &)) ()                &, int> ();
+    test_result_of_imp<int (F::* (FD       &)) () const          &, int> ();
+    test_result_of_imp<int (F::* (FD       &)) () volatile       &, int> ();
+    test_result_of_imp<int (F::* (FD       &)) () const volatile &, int> ();
+    test_result_of_imp<int (F::* (FD const &)) () const          &, int> ();
+    test_result_of_imp<int (F::* (FD const &)) () const volatile &, int> ();
+    test_result_of_imp<int (F::* (FD volatile &)) () volatile       &, int> ();
+    test_result_of_imp<int (F::* (FD volatile &)) () const volatile &, int> ();
+    test_result_of_imp<int (F::* (FD const volatile &)) () const volatile &, int> ();
+
+    test_result_of_imp<int (F::* (FD       &&)) ()                &&, int> ();
+    test_result_of_imp<int (F::* (FD       &&)) () const          &&, int> ();
+    test_result_of_imp<int (F::* (FD       &&)) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (FD       &&)) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (FD const &&)) () const          &&, int> ();
+    test_result_of_imp<int (F::* (FD const &&)) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (FD volatile &&)) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (FD volatile &&)) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (FD const volatile &&)) () const volatile &&, int> ();
+
+    test_result_of_imp<int (F::* (FD       )) ()                &&, int> ();
+    test_result_of_imp<int (F::* (FD       )) () const          &&, int> ();
+    test_result_of_imp<int (F::* (FD       )) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (FD       )) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (FD const )) () const          &&, int> ();
+    test_result_of_imp<int (F::* (FD const )) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (FD volatile )) () volatile       &&, int> ();
+    test_result_of_imp<int (F::* (FD volatile )) () const volatile &&, int> ();
+    test_result_of_imp<int (F::* (FD const volatile )) () const volatile &&, int> ();
+    }
+    {
+    test_result_of_imp<int (F::* (std::reference_wrapper<F>))       (),       int>();
+    test_result_of_imp<int (F::* (std::reference_wrapper<const F>)) () const, int>();
+    test_result_of_imp<int (F::* (std::unique_ptr<F>       ))       (),       int>();
+    test_result_of_imp<int (F::* (std::unique_ptr<const F> ))       () const, int>();
+    }
+    test_result_of_imp<decltype(&wat::foo)(wat), void>();
+
+  return 0;
+}
+
+_LIBCPP_SUPPRESS_DEPRECATED_POP
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/type_identity.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/type_identity.pass.cpp
new file mode 100644
index 0000000..c2b2429
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/type_identity.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// type_traits
+
+// type_identity
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_type_identity()
+{
+    ASSERT_SAME_TYPE(T, typename std::type_identity<T>::type);
+    ASSERT_SAME_TYPE(T,          std::type_identity_t<T>);
+}
+
+int main(int, char**)
+{
+    test_type_identity<void>();
+    test_type_identity<int>();
+    test_type_identity<const volatile int>();
+    test_type_identity<int*>();
+    test_type_identity<      int[3]>();
+    test_type_identity<const int[3]>();
+
+    test_type_identity<void (*)()>();
+    test_type_identity<int(int) const>();
+    test_type_identity<int(int) volatile>();
+    test_type_identity<int(int)  &>();
+    test_type_identity<int(int) &&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/underlying_type.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/underlying_type.fail.cpp
new file mode 100644
index 0000000..7624dfd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/underlying_type.fail.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// type_traits
+
+// MSVC mode seems to use different rules regarding enum sizes, so E1
+// doesn't cause an error.
+// UNSUPPORTED: msvc
+
+// underlying_type
+// Mandates: enum must not be an incomplete enumeration type.
+
+#include <type_traits>
+#include <climits>
+
+#include "test_macros.h"
+
+enum E1 { E1Zero, E1One, E1Two = sizeof(std::underlying_type<E1>::type) }; // expected-error@*:* {{cannot determine underlying type of incomplete enumeration type 'E1'}}
+
+//  None of these are incomplete.
+//  Scoped enums have an underlying type of 'int' unless otherwise specified
+//  Unscoped enums with a specified underlying type become complete as soon as that type is specified.
+// enum E2 : char            { E2Zero, E2One, E2Two = sizeof(std::underlying_type<E2>::type) };
+// enum class E3             { E3Zero, E3One, E3Two = sizeof(std::underlying_type<E3>::type) };
+// enum struct E4 : unsigned { E4Zero, E4One, E4Two = sizeof(std::underlying_type<E4>::type) };
+// enum struct E5            { E5Zero, E5One, E5Two = sizeof(std::underlying_type<E5>::type) };
+// enum class E6 : unsigned  { E6Zero, E6One, E6Two = sizeof(std::underlying_type<E6>::type) };
+
+// These error messages will have to change if clang ever gets fixed. But at least they're being rejected.
+enum E7        : std::underlying_type_t<E7> {}; // expected-error {{use of undeclared identifier 'E7'}}
+enum class E8  : std::underlying_type_t<E8> {}; // expected-error {{use of undeclared identifier 'E8'}}
+enum struct E9 : std::underlying_type_t<E9> {}; // expected-error {{use of undeclared identifier 'E9'}}
+
+int main(int, char**)
+{
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/underlying_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/underlying_type.pass.cpp
new file mode 100644
index 0000000..3e08855
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.other/underlying_type.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// underlying_type
+//  As of C++20, std::underlying_type is SFINAE-friendly; if you hand it
+//  a non-enumeration, it returns an empty struct.
+
+#include <type_traits>
+#include <climits>
+
+#include "test_macros.h"
+
+
+//  MSVC's ABI doesn't follow the standard
+#if !defined(_WIN32) || defined(__MINGW32__)
+    #define TEST_UNSIGNED_UNDERLYING_TYPE 1
+#endif
+
+
+#if TEST_STD_VER > 17
+template <class, class = std::void_t<>>
+struct has_type_member : std::false_type {};
+
+template <class T>
+struct has_type_member<T,
+           std::void_t<typename std::underlying_type<T>::type>> : std::true_type {};
+
+struct S {};
+union U { int i; float f;};
+#endif
+
+template <typename T, typename Expected>
+void check()
+{
+    ASSERT_SAME_TYPE(Expected, typename std::underlying_type<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(Expected, typename std::underlying_type_t<T>);
+#endif
+}
+
+enum E { V = INT_MIN };
+
+#ifdef TEST_UNSIGNED_UNDERLYING_TYPE
+enum F { W = UINT_MAX };
+#endif // TEST_UNSIGNED_UNDERLYING_TYPE
+
+#if TEST_STD_VER >= 11
+enum G : char {};
+enum class H { red, green = 20, blue };
+enum class I : long { red, green = 20, blue };
+enum struct J { red, green = 20, blue };
+enum struct K : short { red, green = 20, blue };
+#endif
+
+int main(int, char**)
+{
+//  Basic tests
+    check<E, int>();
+#ifdef TEST_UNSIGNED_UNDERLYING_TYPE
+    check<F, unsigned>();
+#endif // TEST_UNSIGNED_UNDERLYING_TYPE
+
+//  Class enums and enums with specified underlying type
+#if TEST_STD_VER >= 11
+    check<G, char>();
+    check<H, int>();
+    check<I, long>();
+    check<J, int>();
+    check<K, short>();
+#endif
+
+//  SFINAE-able underlying_type
+#if TEST_STD_VER > 17
+    static_assert( has_type_member<E>::value, "");
+#ifdef TEST_UNSIGNED_UNDERLYING_TYPE
+    static_assert( has_type_member<F>::value, "");
+#endif // TEST_UNSIGNED_UNDERLYING_TYPE
+    static_assert( has_type_member<G>::value, "");
+
+    static_assert(!has_type_member<void>::value, "");
+    static_assert(!has_type_member<int>::value, "");
+    static_assert(!has_type_member<double>::value, "");
+    static_assert(!has_type_member<int[]>::value, "");
+    static_assert(!has_type_member<S>::value, "");
+    static_assert(!has_type_member<void (S::*)(int)>::value, "");
+    static_assert(!has_type_member<void (S::*)(int, ...)>::value, "");
+    static_assert(!has_type_member<U>::value, "");
+    static_assert(!has_type_member<void(int)>::value, "");
+    static_assert(!has_type_member<void(int, ...)>::value, "");
+    static_assert(!has_type_member<int&>::value, "");
+    static_assert(!has_type_member<int&&>::value, "");
+    static_assert(!has_type_member<int*>::value, "");
+    static_assert(!has_type_member<std::nullptr_t>::value, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ptr/add_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ptr/add_pointer.pass.cpp
new file mode 100644
index 0000000..3bde878
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ptr/add_pointer.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// add_pointer
+// If T names a referenceable type or a (possibly cv-qualified) void type then
+//    the member typedef type shall name the same type as remove_reference_t<T>*;
+//    otherwise, type shall name T.
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_add_pointer()
+{
+    ASSERT_SAME_TYPE(U, typename std::add_pointer<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::add_pointer_t<T>);
+#endif
+}
+
+template <class F>
+void test_function0()
+{
+    ASSERT_SAME_TYPE(F*, typename std::add_pointer<F>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(F*, std::add_pointer_t<F>);
+#endif
+}
+
+template <class F>
+void test_function1()
+{
+    ASSERT_SAME_TYPE(F, typename std::add_pointer<F>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(F, std::add_pointer_t<F>);
+#endif
+}
+
+struct Foo {};
+
+int main(int, char**)
+{
+    test_add_pointer<void, void*>();
+    test_add_pointer<int, int*>();
+    test_add_pointer<int[3], int(*)[3]>();
+    test_add_pointer<int&, int*>();
+    test_add_pointer<const int&, const int*>();
+    test_add_pointer<int*, int**>();
+    test_add_pointer<const int*, const int**>();
+    test_add_pointer<Foo, Foo*>();
+
+//  LWG 2101 specifically talks about add_pointer and functions.
+//  The term of art is "a referenceable type", which a cv- or ref-qualified function is not.
+    test_function0<void()>();
+#if TEST_STD_VER >= 11
+    test_function1<void() const>();
+    test_function1<void() &>();
+    test_function1<void() &&>();
+    test_function1<void() const &>();
+    test_function1<void() const &&>();
+#endif
+
+//  But a cv- or ref-qualified member function *is* "a referenceable type"
+    test_function0<void (Foo::*)()>();
+#if TEST_STD_VER >= 11
+    test_function0<void (Foo::*)() const>();
+    test_function0<void (Foo::*)() &>();
+    test_function0<void (Foo::*)() &&>();
+    test_function0<void (Foo::*)() const &>();
+    test_function0<void (Foo::*)() const &&>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ptr/remove_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ptr/remove_pointer.pass.cpp
new file mode 100644
index 0000000..d4b4470
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ptr/remove_pointer.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_pointer
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_remove_pointer()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_pointer<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::remove_pointer_t<T>);
+#endif
+}
+
+int main(int, char**)
+{
+    test_remove_pointer<void, void>();
+    test_remove_pointer<int, int>();
+    test_remove_pointer<int[3], int[3]>();
+    test_remove_pointer<int*, int>();
+    test_remove_pointer<const int*, const int>();
+    test_remove_pointer<int**, int*>();
+    test_remove_pointer<int** const, int*>();
+    test_remove_pointer<int*const * , int* const>();
+    test_remove_pointer<const int** , const int*>();
+
+    test_remove_pointer<int&, int&>();
+    test_remove_pointer<const int&, const int&>();
+    test_remove_pointer<int(&)[3], int(&)[3]>();
+    test_remove_pointer<int(*)[3], int[3]>();
+    test_remove_pointer<int*&, int*&>();
+    test_remove_pointer<const int*&, const int*&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/add_lvalue_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/add_lvalue_ref.pass.cpp
new file mode 100644
index 0000000..3abc949
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/add_lvalue_ref.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// add_lvalue_reference
+// If T names a referenceable type then the member typedef type
+//    shall name T&; otherwise, type shall name T.
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_add_lvalue_reference()
+{
+    ASSERT_SAME_TYPE(U, typename std::add_lvalue_reference<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::add_lvalue_reference_t<T>);
+#endif
+}
+
+template <class F>
+void test_function0()
+{
+    ASSERT_SAME_TYPE(F&, typename std::add_lvalue_reference<F>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(F&, std::add_lvalue_reference_t<F>);
+#endif
+}
+
+template <class F>
+void test_function1()
+{
+    ASSERT_SAME_TYPE(F, typename std::add_lvalue_reference<F>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(F, std::add_lvalue_reference_t<F>);
+#endif
+}
+
+struct Foo {};
+
+int main(int, char**)
+{
+    test_add_lvalue_reference<void, void>();
+    test_add_lvalue_reference<int, int&>();
+    test_add_lvalue_reference<int[3], int(&)[3]>();
+    test_add_lvalue_reference<int&, int&>();
+    test_add_lvalue_reference<const int&, const int&>();
+    test_add_lvalue_reference<int*, int*&>();
+    test_add_lvalue_reference<const int*, const int*&>();
+    test_add_lvalue_reference<Foo, Foo&>();
+
+//  LWG 2101 specifically talks about add_lvalue_reference and functions.
+//  The term of art is "a referenceable type", which a cv- or ref-qualified function is not.
+    test_function0<void()>();
+    test_function1<void() const>();
+    test_function1<void() &>();
+    test_function1<void() &&>();
+    test_function1<void() const &>();
+    test_function1<void() const &&>();
+
+//  But a cv- or ref-qualified member function *is* "a referenceable type"
+    test_function0<void (Foo::*)()>();
+    test_function0<void (Foo::*)() const>();
+    test_function0<void (Foo::*)() &>();
+    test_function0<void (Foo::*)() &&>();
+    test_function0<void (Foo::*)() const &>();
+    test_function0<void (Foo::*)() const &&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/add_rvalue_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/add_rvalue_ref.pass.cpp
new file mode 100644
index 0000000..d67db44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/add_rvalue_ref.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// add_rvalue_reference
+// If T names a referenceable type then the member typedef type
+//   shall name T&&; otherwise, type shall name T.
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_add_rvalue_reference()
+{
+    ASSERT_SAME_TYPE(U, typename std::add_rvalue_reference<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::add_rvalue_reference_t<T>);
+#endif
+}
+
+template <class F>
+void test_function0()
+{
+    ASSERT_SAME_TYPE(F&&, typename std::add_rvalue_reference<F>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(F&&, std::add_rvalue_reference_t<F>);
+#endif
+}
+
+template <class F>
+void test_function1()
+{
+    ASSERT_SAME_TYPE(F, typename std::add_rvalue_reference<F>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(F, std::add_rvalue_reference_t<F>);
+#endif
+}
+
+struct Foo {};
+
+int main(int, char**)
+{
+    test_add_rvalue_reference<void, void>();
+    test_add_rvalue_reference<int, int&&>();
+    test_add_rvalue_reference<int[3], int(&&)[3]>();
+    test_add_rvalue_reference<int&, int&>();
+    test_add_rvalue_reference<const int&, const int&>();
+    test_add_rvalue_reference<int*, int*&&>();
+    test_add_rvalue_reference<const int*, const int*&&>();
+    test_add_rvalue_reference<Foo, Foo&&>();
+
+//  LWG 2101 specifically talks about add_rvalue_reference and functions.
+//  The term of art is "a referenceable type", which a cv- or ref-qualified function is not.
+    test_function0<void()>();
+    test_function1<void() const>();
+    test_function1<void() &>();
+    test_function1<void() &&>();
+    test_function1<void() const &>();
+    test_function1<void() const &&>();
+
+//  But a cv- or ref-qualified member function *is* "a referenceable type"
+    test_function0<void (Foo::*)()>();
+    test_function0<void (Foo::*)() const>();
+    test_function0<void (Foo::*)() &>();
+    test_function0<void (Foo::*)() &&>();
+    test_function0<void (Foo::*)() const &>();
+    test_function0<void (Foo::*)() const &&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/remove_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/remove_ref.pass.cpp
new file mode 100644
index 0000000..2b11e0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.ref/remove_ref.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// remove_reference
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_remove_reference()
+{
+    ASSERT_SAME_TYPE(U, typename std::remove_reference<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::remove_reference_t<T>);
+#endif
+}
+
+int main(int, char**)
+{
+    test_remove_reference<void, void>();
+    test_remove_reference<int, int>();
+    test_remove_reference<int[3], int[3]>();
+    test_remove_reference<int*, int*>();
+    test_remove_reference<const int*, const int*>();
+
+    test_remove_reference<int&, int>();
+    test_remove_reference<const int&, const int>();
+    test_remove_reference<int(&)[3], int[3]>();
+    test_remove_reference<int*&, int*>();
+    test_remove_reference<const int*&, const int*>();
+
+    test_remove_reference<int&&, int>();
+    test_remove_reference<const int&&, const int>();
+    test_remove_reference<int(&&)[3], int[3]>();
+    test_remove_reference<int*&&, int*>();
+    test_remove_reference<const int*&&, const int*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.sign/make_signed.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.sign/make_signed.pass.cpp
new file mode 100644
index 0000000..705c874
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.sign/make_signed.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// make_signed
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+enum Enum {zero, one_};
+
+#if TEST_STD_VER >= 11
+enum BigEnum : unsigned long long // MSVC's ABI doesn't follow the Standard
+#else
+enum BigEnum
+#endif
+{
+    bigzero,
+    big = 0xFFFFFFFFFFFFFFFFULL
+};
+
+#if !defined(TEST_HAS_NO_INT128) && TEST_STD_VER >= 11
+enum HugeEnum : __uint128_t
+{
+    hugezero
+};
+#endif
+
+template <class T, class U>
+void test_make_signed()
+{
+    ASSERT_SAME_TYPE(U, typename std::make_signed<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::make_signed_t<T>);
+#endif
+}
+
+int main(int, char**)
+{
+    test_make_signed< signed char, signed char >();
+    test_make_signed< unsigned char, signed char >();
+    test_make_signed< char, signed char >();
+    test_make_signed< short, signed short >();
+    test_make_signed< unsigned short, signed short >();
+    test_make_signed< int, signed int >();
+    test_make_signed< unsigned int, signed int >();
+    test_make_signed< long, signed long >();
+    test_make_signed< unsigned long, long >();
+    test_make_signed< long long, signed long long >();
+    test_make_signed< unsigned long long, signed long long >();
+    test_make_signed< wchar_t, std::conditional<sizeof(wchar_t) == 4, int, short>::type >();
+    test_make_signed< const wchar_t, std::conditional<sizeof(wchar_t) == 4, const int, const short>::type >();
+    test_make_signed< const Enum, std::conditional<sizeof(Enum) == sizeof(int), const int, const signed char>::type >();
+    test_make_signed< BigEnum, std::conditional<sizeof(long) == 4, long long, long>::type >();
+#ifndef TEST_HAS_NO_INT128
+    test_make_signed< __int128_t, __int128_t >();
+    test_make_signed< __uint128_t, __int128_t >();
+# if TEST_STD_VER >= 11
+    test_make_signed< HugeEnum, __int128_t >();
+# endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.sign/make_unsigned.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.sign/make_unsigned.pass.cpp
new file mode 100644
index 0000000..c2b96c0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.trans/meta.trans.sign/make_unsigned.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// make_unsigned
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+enum Enum {zero, one_};
+
+#if TEST_STD_VER >= 11
+enum BigEnum : unsigned long long // MSVC's ABI doesn't follow the Standard
+#else
+enum BigEnum
+#endif
+{
+    bigzero,
+    big = 0xFFFFFFFFFFFFFFFFULL
+};
+
+#if !defined(TEST_HAS_NO_INT128) && TEST_STD_VER >= 11
+enum HugeEnum : __int128_t
+{
+    hugezero
+};
+#endif
+
+template <class T, class U>
+void test_make_unsigned()
+{
+    ASSERT_SAME_TYPE(U, typename std::make_unsigned<T>::type);
+#if TEST_STD_VER > 11
+    ASSERT_SAME_TYPE(U, std::make_unsigned_t<T>);
+#endif
+}
+
+int main(int, char**)
+{
+    test_make_unsigned<signed char, unsigned char> ();
+    test_make_unsigned<unsigned char, unsigned char> ();
+    test_make_unsigned<char, unsigned char> ();
+    test_make_unsigned<short, unsigned short> ();
+    test_make_unsigned<unsigned short, unsigned short> ();
+    test_make_unsigned<int, unsigned int> ();
+    test_make_unsigned<unsigned int, unsigned int> ();
+    test_make_unsigned<long, unsigned long> ();
+    test_make_unsigned<unsigned long, unsigned long> ();
+    test_make_unsigned<long long, unsigned long long> ();
+    test_make_unsigned<unsigned long long, unsigned long long> ();
+    test_make_unsigned<wchar_t, std::conditional<sizeof(wchar_t) == 4, unsigned int, unsigned short>::type> ();
+    test_make_unsigned<const wchar_t, std::conditional<sizeof(wchar_t) == 4, const unsigned int, const unsigned short>::type> ();
+    test_make_unsigned<const Enum, std::conditional<sizeof(Enum) == sizeof(int), const unsigned int, const unsigned char>::type >();
+    test_make_unsigned<BigEnum,
+                   std::conditional<sizeof(long) == 4, unsigned long long, unsigned long>::type> ();
+#ifndef TEST_HAS_NO_INT128
+    test_make_unsigned<__int128_t, __uint128_t>();
+    test_make_unsigned<__uint128_t, __uint128_t>();
+# if TEST_STD_VER >= 11
+    test_make_unsigned<HugeEnum, __uint128_t>();
+# endif
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.type.synop/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.type.synop/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.type.synop/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/alignment_of.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/alignment_of.pass.cpp
new file mode 100644
index 0000000..a1c24b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/alignment_of.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// alignment_of
+
+#include <type_traits>
+#include <cstdint>
+
+#include "test_macros.h"
+
+template <class T, unsigned A>
+void test_alignment_of()
+{
+    const unsigned AlignofResult = TEST_ALIGNOF(T);
+    static_assert( AlignofResult == A, "Golden value does not match result of alignof keyword");
+    static_assert( std::alignment_of<T>::value == AlignofResult, "");
+    static_assert( std::alignment_of<T>::value == A, "");
+    static_assert( std::alignment_of<const T>::value == A, "");
+    static_assert( std::alignment_of<volatile T>::value == A, "");
+    static_assert( std::alignment_of<const volatile T>::value == A, "");
+#if TEST_STD_VER > 14
+    static_assert( std::alignment_of_v<T> == A, "");
+    static_assert( std::alignment_of_v<const T> == A, "");
+    static_assert( std::alignment_of_v<volatile T> == A, "");
+    static_assert( std::alignment_of_v<const volatile T> == A, "");
+#endif
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+int main(int, char**)
+{
+    test_alignment_of<int&, 4>();
+    test_alignment_of<Class, 1>();
+    test_alignment_of<int*, sizeof(intptr_t)>();
+    test_alignment_of<const int*, sizeof(intptr_t)>();
+    test_alignment_of<char[3], 1>();
+    test_alignment_of<int, 4>();
+    test_alignment_of<double, TEST_ALIGNOF(double)>();
+    test_alignment_of<bool, 1>();
+    test_alignment_of<unsigned, 4>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/extent.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/extent.pass.cpp
new file mode 100644
index 0000000..927ce13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/extent.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// extent
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, unsigned A>
+void test_extent()
+{
+    static_assert((std::extent<T>::value == A), "");
+    static_assert((std::extent<const T>::value == A), "");
+    static_assert((std::extent<volatile T>::value == A), "");
+    static_assert((std::extent<const volatile T>::value == A), "");
+#if TEST_STD_VER > 14
+    static_assert((std::extent_v<T> == A), "");
+    static_assert((std::extent_v<const T> == A), "");
+    static_assert((std::extent_v<volatile T> == A), "");
+    static_assert((std::extent_v<const volatile T> == A), "");
+#endif
+}
+
+template <class T, unsigned A>
+void test_extent1()
+{
+    static_assert((std::extent<T, 1>::value == A), "");
+    static_assert((std::extent<const T, 1>::value == A), "");
+    static_assert((std::extent<volatile T, 1>::value == A), "");
+    static_assert((std::extent<const volatile T, 1>::value == A), "");
+#if TEST_STD_VER > 14
+    static_assert((std::extent_v<T, 1> == A), "");
+    static_assert((std::extent_v<const T, 1> == A), "");
+    static_assert((std::extent_v<volatile T, 1> == A), "");
+    static_assert((std::extent_v<const volatile T, 1> == A), "");
+#endif
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+int main(int, char**)
+{
+    test_extent<void, 0>();
+    test_extent<int&, 0>();
+    test_extent<Class, 0>();
+    test_extent<int*, 0>();
+    test_extent<const int*, 0>();
+    test_extent<int, 0>();
+    test_extent<double, 0>();
+    test_extent<bool, 0>();
+    test_extent<unsigned, 0>();
+
+    test_extent<int[2], 2>();
+    test_extent<int[2][4], 2>();
+    test_extent<int[][4], 0>();
+
+    test_extent1<int, 0>();
+    test_extent1<int[2], 0>();
+    test_extent1<int[2][4], 4>();
+    test_extent1<int[][4], 4>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/rank.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/rank.pass.cpp
new file mode 100644
index 0000000..6c2eecb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/rank.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// rank
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, unsigned A>
+void test_rank()
+{
+    static_assert( std::rank<T>::value == A, "");
+    static_assert( std::rank<const T>::value == A, "");
+    static_assert( std::rank<volatile T>::value == A, "");
+    static_assert( std::rank<const volatile T>::value == A, "");
+#if TEST_STD_VER > 14
+    static_assert( std::rank_v<T> == A, "");
+    static_assert( std::rank_v<const T> == A, "");
+    static_assert( std::rank_v<volatile T> == A, "");
+    static_assert( std::rank_v<const volatile T> == A, "");
+#endif
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+int main(int, char**)
+{
+    test_rank<void, 0>();
+    test_rank<int&, 0>();
+    test_rank<Class, 0>();
+    test_rank<int*, 0>();
+    test_rank<const int*, 0>();
+    test_rank<int, 0>();
+    test_rank<double, 0>();
+    test_rank<bool, 0>();
+    test_rank<unsigned, 0>();
+
+    test_rank<char[3], 1>();
+    test_rank<char[][3], 2>();
+    test_rank<char[][4][3], 3>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/void_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/void_t.pass.cpp
new file mode 100644
index 0000000..4303901
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary.prop.query/void_t.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// void_t
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test1()
+{
+    ASSERT_SAME_TYPE(void, std::void_t<T>);
+    ASSERT_SAME_TYPE(void, std::void_t<const T>);
+    ASSERT_SAME_TYPE(void, std::void_t<volatile T>);
+    ASSERT_SAME_TYPE(void, std::void_t<const volatile T>);
+}
+
+template <class T, class U>
+void test2()
+{
+    ASSERT_SAME_TYPE(void, std::void_t<T, U>);
+    ASSERT_SAME_TYPE(void, std::void_t<const T, U>);
+    ASSERT_SAME_TYPE(void, std::void_t<volatile T, U>);
+    ASSERT_SAME_TYPE(void, std::void_t<const volatile T, U>);
+
+    ASSERT_SAME_TYPE(void, std::void_t<U, T>);
+    ASSERT_SAME_TYPE(void, std::void_t<U, const T>);
+    ASSERT_SAME_TYPE(void, std::void_t<U, volatile T>);
+    ASSERT_SAME_TYPE(void, std::void_t<U, const volatile T>);
+
+    ASSERT_SAME_TYPE(void, std::void_t<T, const U>);
+    ASSERT_SAME_TYPE(void, std::void_t<const T, const U>);
+    ASSERT_SAME_TYPE(void, std::void_t<volatile T, const U>);
+    ASSERT_SAME_TYPE(void, std::void_t<const volatile T, const U>);
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+int main(int, char**)
+{
+    ASSERT_SAME_TYPE(void, std::void_t<>);
+
+    test1<void>();
+    test1<int>();
+    test1<double>();
+    test1<int&>();
+    test1<Class>();
+    test1<Class[]>();
+    test1<Class[5]>();
+
+    test2<void, int>();
+    test2<double, int>();
+    test2<int&, int>();
+    test2<Class&, bool>();
+    test2<void *, int&>();
+
+    ASSERT_SAME_TYPE(void, std::void_t<int, double const &, Class, volatile int[], void>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/dependent_return_type.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/dependent_return_type.compile.pass.cpp
new file mode 100644
index 0000000..b382940
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/dependent_return_type.compile.pass.cpp
@@ -0,0 +1,168 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Check that all the type_trait aliases can be mangled
+
+// UNSUPPORTED: c++03, c++11
+
+// ignore deprecated volatile return types
+// ADDITIONAL_COMPILE_FLAGS: -Wno-deprecated-volatile
+
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T>
+std::add_const_t<T> add_const() {
+  return {};
+}
+
+template <class T>
+std::add_cv_t<T> add_cv() {
+  return {};
+}
+
+template <class T>
+std::add_lvalue_reference_t<T> add_lvalue_reference() {
+  static int i;
+  return i;
+}
+
+template <class T>
+std::add_pointer_t<T> add_pointer() {
+  return {};
+}
+
+template <class T>
+std::add_rvalue_reference_t<T> add_rvalue_reference() {
+  static int i;
+  return std::move(i);
+}
+
+template <class T>
+std::add_volatile_t<T> add_volatile() {
+  static int i;
+  return std::move(i);
+}
+
+template <class T>
+std::conditional_t<true, T, T> conditional() {
+  return {};
+}
+
+template <class T>
+std::decay_t<T> decay() {
+  return {};
+}
+
+template <class T>
+std::enable_if_t<true, T> enable_if() {
+  return {};
+}
+
+template <class T>
+std::make_signed_t<T> make_signed() {
+  return {};
+}
+
+template <class T>
+std::make_unsigned_t<T> make_unsigned() {
+  return {};
+}
+
+template <class T>
+std::remove_all_extents_t<T> remove_all_extents() {
+  return {};
+}
+
+template <class T>
+std::remove_const_t<T> remove_const() {
+  return {};
+}
+
+template <class T>
+std::remove_cv_t<T> remove_cv() {
+  return {};
+}
+
+#if TEST_STD_VER >= 20
+template <class T>
+std::remove_cvref_t<T> remove_cvref() {
+  return {};
+}
+#endif
+
+template <class T>
+std::remove_extent_t<T> remove_extent() {
+  return {};
+}
+
+template <class T>
+std::remove_pointer_t<T> remove_pointer() {
+  return {};
+}
+
+template <class T>
+std::remove_reference_t<T> remove_reference() {
+  return {};
+}
+
+template <class T>
+std::remove_volatile_t<T> remove_volatile() {
+  return {};
+}
+
+#if TEST_STD_VER >= 20
+template <class T>
+std::type_identity_t<T> type_identity() {
+  return {};
+}
+#endif
+
+template <class T>
+std::underlying_type_t<T> underlying_type() {
+  return {};
+}
+
+enum class E : int {};
+
+#if TEST_STD_VER >= 17
+template <class T>
+std::void_t<T> void_t() {}
+#endif
+
+void instantiate() {
+  add_const<int>();
+  add_cv<int>();
+  add_lvalue_reference<int>();
+  add_pointer<int>();
+  add_rvalue_reference<int>();
+  add_volatile<int>();
+  decay<int>();
+  enable_if<int>();
+  make_signed<int>();
+  make_unsigned<int>();
+  remove_all_extents<int>();
+  remove_const<int>();
+  remove_cv<int>();
+#if TEST_STD_VER >= 20
+  remove_cvref<int>();
+#endif
+  remove_extent<int>();
+  remove_pointer<int>();
+  remove_reference<int>();
+  remove_volatile<int>();
+#if TEST_STD_VER >= 20
+  type_identity<int>();
+#endif
+  underlying_type<E>();
+#if TEST_STD_VER >= 17
+  void_t<int>();
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/array.pass.cpp
new file mode 100644
index 0000000..9f3d8f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/array.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// array
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_array_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert( std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_array()
+{
+    test_array_imp<T>();
+    test_array_imp<const T>();
+    test_array_imp<volatile T>();
+    test_array_imp<const volatile T>();
+}
+
+typedef char array[3];
+typedef const char const_array[3];
+typedef char incomplete_array[];
+struct Incomplete;
+
+int main(int, char**)
+{
+    test_array<array>();
+    test_array<const_array>();
+    test_array<incomplete_array>();
+    test_array<Incomplete[]>();
+
+//  LWG#2582
+    static_assert(!std::is_array<Incomplete>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/class.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/class.pass.cpp
new file mode 100644
index 0000000..3dd6969
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/class.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// class
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_class_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert( std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_class()
+{
+    test_class_imp<T>();
+    test_class_imp<const T>();
+    test_class_imp<volatile T>();
+    test_class_imp<const volatile T>();
+}
+
+class Class
+{
+};
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_class<Class>();
+    test_class<incomplete_type>();
+
+//  LWG#2582
+    static_assert( std::is_class<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/enum.pass.cpp
new file mode 100644
index 0000000..5fa8499
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/enum.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// enum
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_enum_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert( std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_enum()
+{
+    test_enum_imp<T>();
+    test_enum_imp<const T>();
+    test_enum_imp<volatile T>();
+    test_enum_imp<const volatile T>();
+}
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_enum<Enum>();
+
+//  LWG#2582
+    static_assert(!std::is_enum<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/floating_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/floating_point.pass.cpp
new file mode 100644
index 0000000..1f7556c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/floating_point.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// floating_point
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_floating_point_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert( std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_floating_point()
+{
+    test_floating_point_imp<T>();
+    test_floating_point_imp<const T>();
+    test_floating_point_imp<volatile T>();
+    test_floating_point_imp<const volatile T>();
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_floating_point<float>();
+    test_floating_point<double>();
+    test_floating_point<long double>();
+
+//  LWG#2582
+    static_assert(!std::is_floating_point<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/function.pass.cpp
new file mode 100644
index 0000000..1fc79cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/function.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// function
+
+#include <type_traits>
+#include "test_macros.h"
+
+class Class {};
+
+enum Enum1 {};
+#if TEST_STD_VER >= 11
+enum class Enum2 : int {};
+#else
+enum Enum2 {};
+#endif
+
+template <class T>
+void test()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert( std::is_function<T>::value, "");
+}
+
+// Since we can't actually add the const volatile and ref qualifiers once
+// later let's use a macro to do it.
+#define TEST_REGULAR(...)                 \
+    test<__VA_ARGS__>();                  \
+    test<__VA_ARGS__ const>();            \
+    test<__VA_ARGS__ volatile>();         \
+    test<__VA_ARGS__ const volatile>()
+
+
+#define TEST_REF_QUALIFIED(...)           \
+    test<__VA_ARGS__ &>();                \
+    test<__VA_ARGS__ const &>();          \
+    test<__VA_ARGS__ volatile &>();       \
+    test<__VA_ARGS__ const volatile &>(); \
+    test<__VA_ARGS__ &&>();               \
+    test<__VA_ARGS__ const &&>();         \
+    test<__VA_ARGS__ volatile &&>();      \
+    test<__VA_ARGS__ const volatile &&>()
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    TEST_REGULAR( void () );
+    TEST_REGULAR( void (int) );
+    TEST_REGULAR( int (double) );
+    TEST_REGULAR( int (double, char) );
+    TEST_REGULAR( void (...) );
+    TEST_REGULAR( void (int, ...) );
+    TEST_REGULAR( int (double, ...) );
+    TEST_REGULAR( int (double, char, ...) );
+#if TEST_STD_VER >= 11
+    TEST_REF_QUALIFIED( void () );
+    TEST_REF_QUALIFIED( void (int) );
+    TEST_REF_QUALIFIED( int (double) );
+    TEST_REF_QUALIFIED( int (double, char) );
+    TEST_REF_QUALIFIED( void (...) );
+    TEST_REF_QUALIFIED( void (int, ...) );
+    TEST_REF_QUALIFIED( int (double, ...) );
+    TEST_REF_QUALIFIED( int (double, char, ...) );
+#endif
+
+//  LWG#2582
+    static_assert(!std::is_function<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/integral.pass.cpp
new file mode 100644
index 0000000..161d55c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/integral.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// integral
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_integral_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert( std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_integral()
+{
+    test_integral_imp<T>();
+    test_integral_imp<const T>();
+    test_integral_imp<volatile T>();
+    test_integral_imp<const volatile T>();
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_integral<bool>();
+    test_integral<char>();
+    test_integral<signed char>();
+    test_integral<unsigned char>();
+    test_integral<wchar_t>();
+    test_integral<short>();
+    test_integral<unsigned short>();
+    test_integral<int>();
+    test_integral<unsigned int>();
+    test_integral<long>();
+    test_integral<unsigned long>();
+    test_integral<long long>();
+    test_integral<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test_integral<__int128_t>();
+    test_integral<__uint128_t>();
+#endif
+
+//  LWG#2582
+    static_assert(!std::is_integral<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_array.pass.cpp
new file mode 100644
index 0000000..26a469a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_array.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_array
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_array()
+{
+    static_assert( std::is_array<T>::value, "");
+    static_assert( std::is_array<const T>::value, "");
+    static_assert( std::is_array<volatile T>::value, "");
+    static_assert( std::is_array<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_array_v<T>, "");
+    static_assert( std::is_array_v<const T>, "");
+    static_assert( std::is_array_v<volatile T>, "");
+    static_assert( std::is_array_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_array()
+{
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_array<const T>::value, "");
+    static_assert(!std::is_array<volatile T>::value, "");
+    static_assert(!std::is_array<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_array_v<T>, "");
+    static_assert(!std::is_array_v<const T>, "");
+    static_assert(!std::is_array_v<volatile T>, "");
+    static_assert(!std::is_array_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_array<char[3]>();
+    test_is_not_array<char[0]>();
+    test_is_array<char[]>();
+    test_is_array<Union[]>();
+
+    test_is_not_array<std::nullptr_t>();
+    test_is_not_array<void>();
+    test_is_not_array<int&>();
+    test_is_not_array<int&&>();
+    test_is_not_array<int*>();
+    test_is_not_array<double>();
+    test_is_not_array<const int*>();
+    test_is_not_array<Enum>();
+    test_is_not_array<Union>();
+    test_is_not_array<FunctionPtr>();
+    test_is_not_array<Empty>();
+    test_is_not_array<bit_zero>();
+    test_is_not_array<NotEmpty>();
+    test_is_not_array<incomplete_type>();  //  LWG#2582
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_class.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_class.pass.cpp
new file mode 100644
index 0000000..def798b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_class.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_class
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_class()
+{
+    static_assert( std::is_class<T>::value, "");
+    static_assert( std::is_class<const T>::value, "");
+    static_assert( std::is_class<volatile T>::value, "");
+    static_assert( std::is_class<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_class_v<T>, "");
+    static_assert( std::is_class_v<const T>, "");
+    static_assert( std::is_class_v<volatile T>, "");
+    static_assert( std::is_class_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_class()
+{
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_class<const T>::value, "");
+    static_assert(!std::is_class<volatile T>::value, "");
+    static_assert(!std::is_class<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_class_v<T>, "");
+    static_assert(!std::is_class_v<const T>, "");
+    static_assert(!std::is_class_v<volatile T>, "");
+    static_assert(!std::is_class_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_class<Empty>();
+    test_is_class<bit_zero>();
+    test_is_class<NotEmpty>();
+    test_is_class<Abstract>();
+    test_is_class<incomplete_type>();
+
+#if TEST_STD_VER >= 11
+// In C++03 we have an emulation of std::nullptr_t
+    test_is_not_class<std::nullptr_t>();
+#endif
+    test_is_not_class<void>();
+    test_is_not_class<int>();
+    test_is_not_class<int&>();
+#if TEST_STD_VER >= 11
+    test_is_not_class<int&&>();
+#endif
+    test_is_not_class<int*>();
+    test_is_not_class<double>();
+    test_is_not_class<const int*>();
+    test_is_not_class<char[3]>();
+    test_is_not_class<char[]>();
+    test_is_not_class<Enum>();
+    test_is_not_class<Union>();
+    test_is_not_class<FunctionPtr>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_enum.pass.cpp
new file mode 100644
index 0000000..7d4b67f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_enum.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_enum
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_enum()
+{
+    static_assert( std::is_enum<T>::value, "");
+    static_assert( std::is_enum<const T>::value, "");
+    static_assert( std::is_enum<volatile T>::value, "");
+    static_assert( std::is_enum<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_enum_v<T>, "");
+    static_assert( std::is_enum_v<const T>, "");
+    static_assert( std::is_enum_v<volatile T>, "");
+    static_assert( std::is_enum_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_enum()
+{
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_enum<const T>::value, "");
+    static_assert(!std::is_enum<volatile T>::value, "");
+    static_assert(!std::is_enum<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_enum_v<T>, "");
+    static_assert(!std::is_enum_v<const T>, "");
+    static_assert(!std::is_enum_v<volatile T>, "");
+    static_assert(!std::is_enum_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_enum<Enum>();
+
+    test_is_not_enum<std::nullptr_t>();
+    test_is_not_enum<void>();
+    test_is_not_enum<int>();
+    test_is_not_enum<int&>();
+    test_is_not_enum<int&&>();
+    test_is_not_enum<int*>();
+    test_is_not_enum<double>();
+    test_is_not_enum<const int*>();
+    test_is_not_enum<char[3]>();
+    test_is_not_enum<char[]>();
+    test_is_not_enum<Union>();
+    test_is_not_enum<Empty>();
+    test_is_not_enum<bit_zero>();
+    test_is_not_enum<NotEmpty>();
+    test_is_not_enum<Abstract>();
+    test_is_not_enum<FunctionPtr>();
+    test_is_not_enum<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_floating_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_floating_point.pass.cpp
new file mode 100644
index 0000000..e628451
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_floating_point.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_floating_point
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_floating_point()
+{
+    static_assert( std::is_floating_point<T>::value, "");
+    static_assert( std::is_floating_point<const T>::value, "");
+    static_assert( std::is_floating_point<volatile T>::value, "");
+    static_assert( std::is_floating_point<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_floating_point_v<T>, "");
+    static_assert( std::is_floating_point_v<const T>, "");
+    static_assert( std::is_floating_point_v<volatile T>, "");
+    static_assert( std::is_floating_point_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_floating_point()
+{
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_floating_point<const T>::value, "");
+    static_assert(!std::is_floating_point<volatile T>::value, "");
+    static_assert(!std::is_floating_point<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_floating_point_v<T>, "");
+    static_assert(!std::is_floating_point_v<const T>, "");
+    static_assert(!std::is_floating_point_v<volatile T>, "");
+    static_assert(!std::is_floating_point_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_floating_point<float>();
+    test_is_floating_point<double>();
+    test_is_floating_point<long double>();
+
+    test_is_not_floating_point<short>();
+    test_is_not_floating_point<unsigned short>();
+    test_is_not_floating_point<int>();
+    test_is_not_floating_point<unsigned int>();
+    test_is_not_floating_point<long>();
+    test_is_not_floating_point<unsigned long>();
+
+    test_is_not_floating_point<std::nullptr_t>();
+    test_is_not_floating_point<void>();
+    test_is_not_floating_point<int&>();
+    test_is_not_floating_point<int&&>();
+    test_is_not_floating_point<int*>();
+    test_is_not_floating_point<const int*>();
+    test_is_not_floating_point<char[3]>();
+    test_is_not_floating_point<char[]>();
+    test_is_not_floating_point<Union>();
+    test_is_not_floating_point<Empty>();
+    test_is_not_floating_point<bit_zero>();
+    test_is_not_floating_point<NotEmpty>();
+    test_is_not_floating_point<Abstract>();
+    test_is_not_floating_point<Enum>();
+    test_is_not_floating_point<FunctionPtr>();
+    test_is_not_floating_point<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_function.pass.cpp
new file mode 100644
index 0000000..b582499
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_function.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_function
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+
+#include "test_macros.h"
+
+// NOTE: On Windows the function `test_is_function<void()>` and
+// `test_is_function<void() noexcept> has the same mangled despite being
+// a distinct instantiation. This causes Clang to emit an error. However
+// structs do not have this problem.
+
+template <class T>
+struct test_is_function {
+    static_assert( std::is_function<T>::value, "");
+    static_assert( std::is_function<const T>::value, "");
+    static_assert( std::is_function<volatile T>::value, "");
+    static_assert( std::is_function<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_function_v<T>, "");
+    static_assert( std::is_function_v<const T>, "");
+    static_assert( std::is_function_v<volatile T>, "");
+    static_assert( std::is_function_v<const volatile T>, "");
+#endif
+};
+
+template <class T>
+struct test_is_not_function {
+    static_assert(!std::is_function<T>::value, "");
+    static_assert(!std::is_function<const T>::value, "");
+    static_assert(!std::is_function<volatile T>::value, "");
+    static_assert(!std::is_function<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_function_v<T>, "");
+    static_assert(!std::is_function_v<const T>, "");
+    static_assert(!std::is_function_v<volatile T>, "");
+    static_assert(!std::is_function_v<const volatile T>, "");
+#endif
+};
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_function<void(void)>();
+    test_is_function<int(int)>();
+    test_is_function<int(int, double)>();
+    test_is_function<int(Abstract *)>();
+    test_is_function<void(...)>();
+
+  test_is_not_function<std::nullptr_t>();
+  test_is_not_function<void>();
+  test_is_not_function<int>();
+  test_is_not_function<int&>();
+  test_is_not_function<int&&>();
+  test_is_not_function<int*>();
+  test_is_not_function<double>();
+  test_is_not_function<char[3]>();
+  test_is_not_function<char[]>();
+  test_is_not_function<Union>();
+  test_is_not_function<Enum>();
+  test_is_not_function<FunctionPtr>(); // function pointer is not a function
+  test_is_not_function<Empty>();
+  test_is_not_function<bit_zero>();
+  test_is_not_function<NotEmpty>();
+  test_is_not_function<Abstract>();
+  test_is_not_function<Abstract*>();
+  test_is_not_function<incomplete_type>();
+
+#if TEST_STD_VER >= 11
+  test_is_function<void() noexcept>();
+  test_is_function<void() const && noexcept>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_integral.pass.cpp
new file mode 100644
index 0000000..96d160b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_integral.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_integral
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_integral()
+{
+    static_assert( std::is_integral<T>::value, "");
+    static_assert( std::is_integral<const T>::value, "");
+    static_assert( std::is_integral<volatile T>::value, "");
+    static_assert( std::is_integral<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_integral_v<T>, "");
+    static_assert( std::is_integral_v<const T>, "");
+    static_assert( std::is_integral_v<volatile T>, "");
+    static_assert( std::is_integral_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_integral()
+{
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_integral<const T>::value, "");
+    static_assert(!std::is_integral<volatile T>::value, "");
+    static_assert(!std::is_integral<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_integral_v<T>, "");
+    static_assert(!std::is_integral_v<const T>, "");
+    static_assert(!std::is_integral_v<volatile T>, "");
+    static_assert(!std::is_integral_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_integral<short>();
+    test_is_integral<unsigned short>();
+    test_is_integral<int>();
+    test_is_integral<unsigned int>();
+    test_is_integral<long>();
+    test_is_integral<unsigned long>();
+    test_is_integral<bool>();
+    test_is_integral<char>();
+    test_is_integral<signed char>();
+    test_is_integral<unsigned char>();
+    test_is_integral<wchar_t>();
+#ifndef TEST_HAS_NO_CHAR8_T
+    test_is_integral<char8_t>();
+#endif
+
+    test_is_not_integral<std::nullptr_t>();
+    test_is_not_integral<void>();
+    test_is_not_integral<int&>();
+    test_is_not_integral<int&&>();
+    test_is_not_integral<int*>();
+    test_is_not_integral<double>();
+    test_is_not_integral<const int*>();
+    test_is_not_integral<char[3]>();
+    test_is_not_integral<char[]>();
+    test_is_not_integral<Union>();
+    test_is_not_integral<Enum>();
+    test_is_not_integral<FunctionPtr>();
+    test_is_not_integral<Empty>();
+    test_is_not_integral<bit_zero>();
+    test_is_not_integral<NotEmpty>();
+    test_is_not_integral<Abstract>();
+    test_is_not_integral<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_lvalue_reference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_lvalue_reference.pass.cpp
new file mode 100644
index 0000000..9235efb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_lvalue_reference.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_lvalue_reference
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_lvalue_reference()
+{
+    static_assert( std::is_lvalue_reference<T>::value, "");
+    static_assert( std::is_lvalue_reference<const T>::value, "");
+    static_assert( std::is_lvalue_reference<volatile T>::value, "");
+    static_assert( std::is_lvalue_reference<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_lvalue_reference_v<T>, "");
+    static_assert( std::is_lvalue_reference_v<const T>, "");
+    static_assert( std::is_lvalue_reference_v<volatile T>, "");
+    static_assert( std::is_lvalue_reference_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_lvalue_reference()
+{
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_lvalue_reference<const T>::value, "");
+    static_assert(!std::is_lvalue_reference<volatile T>::value, "");
+    static_assert(!std::is_lvalue_reference<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_lvalue_reference_v<T>, "");
+    static_assert(!std::is_lvalue_reference_v<const T>, "");
+    static_assert(!std::is_lvalue_reference_v<volatile T>, "");
+    static_assert(!std::is_lvalue_reference_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_lvalue_reference<int&>();
+
+    test_is_not_lvalue_reference<std::nullptr_t>();
+    test_is_not_lvalue_reference<void>();
+    test_is_not_lvalue_reference<int>();
+    test_is_not_lvalue_reference<int*>();
+    test_is_not_lvalue_reference<int&&>();
+    test_is_not_lvalue_reference<double>();
+    test_is_not_lvalue_reference<const int*>();
+    test_is_not_lvalue_reference<char[3]>();
+    test_is_not_lvalue_reference<char[]>();
+    test_is_not_lvalue_reference<Union>();
+    test_is_not_lvalue_reference<Enum>();
+    test_is_not_lvalue_reference<FunctionPtr>();
+    test_is_not_lvalue_reference<Empty>();
+    test_is_not_lvalue_reference<bit_zero>();
+    test_is_not_lvalue_reference<NotEmpty>();
+    test_is_not_lvalue_reference<Abstract>();
+    test_is_not_lvalue_reference<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_object_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_object_pointer.pass.cpp
new file mode 100644
index 0000000..95a8b55
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_object_pointer.pass.cpp
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_member_object_pointer
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_member_object_pointer()
+{
+    static_assert( std::is_member_object_pointer<T>::value, "");
+    static_assert( std::is_member_object_pointer<const T>::value, "");
+    static_assert( std::is_member_object_pointer<volatile T>::value, "");
+    static_assert( std::is_member_object_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_member_object_pointer_v<T>, "");
+    static_assert( std::is_member_object_pointer_v<const T>, "");
+    static_assert( std::is_member_object_pointer_v<volatile T>, "");
+    static_assert( std::is_member_object_pointer_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_member_object_pointer()
+{
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_object_pointer<const T>::value, "");
+    static_assert(!std::is_member_object_pointer<volatile T>::value, "");
+    static_assert(!std::is_member_object_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_member_object_pointer_v<T>, "");
+    static_assert(!std::is_member_object_pointer_v<const T>, "");
+    static_assert(!std::is_member_object_pointer_v<volatile T>, "");
+    static_assert(!std::is_member_object_pointer_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_member_object_pointer<int Abstract::*>();
+    test_is_member_object_pointer<double NotEmpty::*>();
+    test_is_member_object_pointer<FunctionPtr Empty::*>();
+
+    test_is_not_member_object_pointer<std::nullptr_t>();
+    test_is_not_member_object_pointer<void>();
+    test_is_not_member_object_pointer<int>();
+    test_is_not_member_object_pointer<int&>();
+    test_is_not_member_object_pointer<int&&>();
+    test_is_not_member_object_pointer<int*>();
+    test_is_not_member_object_pointer<double>();
+    test_is_not_member_object_pointer<const int*>();
+    test_is_not_member_object_pointer<char[3]>();
+    test_is_not_member_object_pointer<char[]>();
+    test_is_not_member_object_pointer<Union>();
+    test_is_not_member_object_pointer<Enum>();
+    test_is_not_member_object_pointer<FunctionPtr>();
+    test_is_not_member_object_pointer<Empty>();
+    test_is_not_member_object_pointer<bit_zero>();
+    test_is_not_member_object_pointer<NotEmpty>();
+    test_is_not_member_object_pointer<Abstract>();
+    test_is_not_member_object_pointer<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_pointer.pass.cpp
new file mode 100644
index 0000000..cf46c72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_pointer.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_member_pointer
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_member_pointer()
+{
+    static_assert( std::is_member_pointer<T>::value, "");
+    static_assert( std::is_member_pointer<const T>::value, "");
+    static_assert( std::is_member_pointer<volatile T>::value, "");
+    static_assert( std::is_member_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_member_pointer_v<T>, "");
+    static_assert( std::is_member_pointer_v<const T>, "");
+    static_assert( std::is_member_pointer_v<volatile T>, "");
+    static_assert( std::is_member_pointer_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_member_pointer()
+{
+    static_assert(!std::is_member_pointer<T>::value, "");
+    static_assert(!std::is_member_pointer<const T>::value, "");
+    static_assert(!std::is_member_pointer<volatile T>::value, "");
+    static_assert(!std::is_member_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_member_pointer_v<T>, "");
+    static_assert(!std::is_member_pointer_v<const T>, "");
+    static_assert(!std::is_member_pointer_v<volatile T>, "");
+    static_assert(!std::is_member_pointer_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_member_pointer<int Abstract::*>();
+    test_is_member_pointer<double NotEmpty::*>();
+    test_is_member_pointer<FunctionPtr Empty::*>();
+    test_is_member_pointer<void (Empty::*)()>();
+
+    test_is_not_member_pointer<std::nullptr_t>();
+    test_is_not_member_pointer<void>();
+    test_is_not_member_pointer<int>();
+    test_is_not_member_pointer<int&>();
+    test_is_not_member_pointer<int&&>();
+    test_is_not_member_pointer<int*>();
+    test_is_not_member_pointer<double>();
+    test_is_not_member_pointer<const int*>();
+    test_is_not_member_pointer<char[3]>();
+    test_is_not_member_pointer<char[]>();
+    test_is_not_member_pointer<Union>();
+    test_is_not_member_pointer<Enum>();
+    test_is_not_member_pointer<FunctionPtr>();
+    test_is_not_member_pointer<Empty>();
+    test_is_not_member_pointer<bit_zero>();
+    test_is_not_member_pointer<NotEmpty>();
+    test_is_not_member_pointer<Abstract>();
+    test_is_not_member_pointer<incomplete_type>();
+
+#if TEST_STD_VER >= 11
+  test_is_member_pointer<int (Empty::*)(int, ...) const>();
+  test_is_member_pointer<int (Empty::*)(int, long, long) const noexcept>();
+  test_is_member_pointer<int (Empty::*)() & noexcept>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_null_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_null_pointer.pass.cpp
new file mode 100644
index 0000000..0e4129e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_null_pointer.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_null_pointer
+
+// UNSUPPORTED: c++03, c++11
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_null_pointer()
+{
+    static_assert( std::is_null_pointer<T>::value, "");
+    static_assert( std::is_null_pointer<const T>::value, "");
+    static_assert( std::is_null_pointer<volatile T>::value, "");
+    static_assert( std::is_null_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_null_pointer_v<T>, "");
+    static_assert( std::is_null_pointer_v<const T>, "");
+    static_assert( std::is_null_pointer_v<volatile T>, "");
+    static_assert( std::is_null_pointer_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_null_pointer()
+{
+    static_assert(!std::is_null_pointer<T>::value, "");
+    static_assert(!std::is_null_pointer<const T>::value, "");
+    static_assert(!std::is_null_pointer<volatile T>::value, "");
+    static_assert(!std::is_null_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_null_pointer_v<T>, "");
+    static_assert(!std::is_null_pointer_v<const T>, "");
+    static_assert(!std::is_null_pointer_v<volatile T>, "");
+    static_assert(!std::is_null_pointer_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_null_pointer<std::nullptr_t>();
+
+    test_is_not_null_pointer<void>();
+    test_is_not_null_pointer<int>();
+    test_is_not_null_pointer<int&>();
+    test_is_not_null_pointer<int&&>();
+    test_is_not_null_pointer<int*>();
+    test_is_not_null_pointer<double>();
+    test_is_not_null_pointer<const int*>();
+    test_is_not_null_pointer<char[3]>();
+    test_is_not_null_pointer<char[]>();
+    test_is_not_null_pointer<Union>();
+    test_is_not_null_pointer<Enum>();
+    test_is_not_null_pointer<FunctionPtr>();
+    test_is_not_null_pointer<Empty>();
+    test_is_not_null_pointer<bit_zero>();
+    test_is_not_null_pointer<NotEmpty>();
+    test_is_not_null_pointer<Abstract>();
+    test_is_not_null_pointer<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_pointer.pass.cpp
new file mode 100644
index 0000000..18609b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_pointer.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_pointer
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_pointer()
+{
+    static_assert( std::is_pointer<T>::value, "");
+    static_assert( std::is_pointer<const T>::value, "");
+    static_assert( std::is_pointer<volatile T>::value, "");
+    static_assert( std::is_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_pointer_v<T>, "");
+    static_assert( std::is_pointer_v<const T>, "");
+    static_assert( std::is_pointer_v<volatile T>, "");
+    static_assert( std::is_pointer_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_pointer()
+{
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_pointer<const T>::value, "");
+    static_assert(!std::is_pointer<volatile T>::value, "");
+    static_assert(!std::is_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_pointer_v<T>, "");
+    static_assert(!std::is_pointer_v<const T>, "");
+    static_assert(!std::is_pointer_v<volatile T>, "");
+    static_assert(!std::is_pointer_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_pointer<void*>();
+    test_is_pointer<int*>();
+    test_is_pointer<const int*>();
+    test_is_pointer<Abstract*>();
+    test_is_pointer<FunctionPtr>();
+
+    test_is_not_pointer<std::nullptr_t>();
+    test_is_not_pointer<void>();
+    test_is_not_pointer<int&>();
+    test_is_not_pointer<int&&>();
+    test_is_not_pointer<double>();
+    test_is_not_pointer<char[3]>();
+    test_is_not_pointer<char[]>();
+    test_is_not_pointer<Union>();
+    test_is_not_pointer<Enum>();
+    test_is_not_pointer<Empty>();
+    test_is_not_pointer<bit_zero>();
+    test_is_not_pointer<NotEmpty>();
+    test_is_not_pointer<Abstract>();
+    test_is_not_pointer<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_rvalue_reference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_rvalue_reference.pass.cpp
new file mode 100644
index 0000000..b424c7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_rvalue_reference.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_rvalue_reference
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_rvalue_reference()
+{
+    static_assert( std::is_rvalue_reference<T>::value, "");
+    static_assert( std::is_rvalue_reference<const T>::value, "");
+    static_assert( std::is_rvalue_reference<volatile T>::value, "");
+    static_assert( std::is_rvalue_reference<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_rvalue_reference_v<T>, "");
+    static_assert( std::is_rvalue_reference_v<const T>, "");
+    static_assert( std::is_rvalue_reference_v<volatile T>, "");
+    static_assert( std::is_rvalue_reference_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_rvalue_reference()
+{
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<const T>::value, "");
+    static_assert(!std::is_rvalue_reference<volatile T>::value, "");
+    static_assert(!std::is_rvalue_reference<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_rvalue_reference_v<T>, "");
+    static_assert(!std::is_rvalue_reference_v<const T>, "");
+    static_assert(!std::is_rvalue_reference_v<volatile T>, "");
+    static_assert(!std::is_rvalue_reference_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_rvalue_reference<int&&>();
+
+    test_is_not_rvalue_reference<std::nullptr_t>();
+    test_is_not_rvalue_reference<void>();
+    test_is_not_rvalue_reference<int>();
+    test_is_not_rvalue_reference<int*>();
+    test_is_not_rvalue_reference<int&>();
+    test_is_not_rvalue_reference<double>();
+    test_is_not_rvalue_reference<const int*>();
+    test_is_not_rvalue_reference<char[3]>();
+    test_is_not_rvalue_reference<char[]>();
+    test_is_not_rvalue_reference<Union>();
+    test_is_not_rvalue_reference<Enum>();
+    test_is_not_rvalue_reference<FunctionPtr>();
+    test_is_not_rvalue_reference<Empty>();
+    test_is_not_rvalue_reference<bit_zero>();
+    test_is_not_rvalue_reference<NotEmpty>();
+    test_is_not_rvalue_reference<Abstract>();
+    test_is_not_rvalue_reference<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_union.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_union.pass.cpp
new file mode 100644
index 0000000..a86147a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_union.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_union
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_union()
+{
+    static_assert( std::is_union<T>::value, "");
+    static_assert( std::is_union<const T>::value, "");
+    static_assert( std::is_union<volatile T>::value, "");
+    static_assert( std::is_union<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_union_v<T>, "");
+    static_assert( std::is_union_v<const T>, "");
+    static_assert( std::is_union_v<volatile T>, "");
+    static_assert( std::is_union_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_union()
+{
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_union<const T>::value, "");
+    static_assert(!std::is_union<volatile T>::value, "");
+    static_assert(!std::is_union<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_union_v<T>, "");
+    static_assert(!std::is_union_v<const T>, "");
+    static_assert(!std::is_union_v<volatile T>, "");
+    static_assert(!std::is_union_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_union<Union>();
+
+    test_is_not_union<std::nullptr_t>();
+    test_is_not_union<void>();
+    test_is_not_union<int>();
+    test_is_not_union<int&>();
+    test_is_not_union<int&&>();
+    test_is_not_union<int*>();
+    test_is_not_union<double>();
+    test_is_not_union<const int*>();
+    test_is_not_union<char[3]>();
+    test_is_not_union<char[]>();
+    test_is_not_union<Enum>();
+    test_is_not_union<FunctionPtr>();
+    test_is_not_union<Empty>();
+    test_is_not_union<bit_zero>();
+    test_is_not_union<NotEmpty>();
+    test_is_not_union<Abstract>();
+    test_is_not_union<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_void.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_void.pass.cpp
new file mode 100644
index 0000000..ccbca97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_void.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_void
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_void()
+{
+    static_assert( std::is_void<T>::value, "");
+    static_assert( std::is_void<const T>::value, "");
+    static_assert( std::is_void<volatile T>::value, "");
+    static_assert( std::is_void<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_void_v<T>, "");
+    static_assert( std::is_void_v<const T>, "");
+    static_assert( std::is_void_v<volatile T>, "");
+    static_assert( std::is_void_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_void()
+{
+    static_assert(!std::is_void<T>::value, "");
+    static_assert(!std::is_void<const T>::value, "");
+    static_assert(!std::is_void<volatile T>::value, "");
+    static_assert(!std::is_void<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_void_v<T>, "");
+    static_assert(!std::is_void_v<const T>, "");
+    static_assert(!std::is_void_v<volatile T>, "");
+    static_assert(!std::is_void_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+struct incomplete_type;
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    test_is_void<void>();
+
+    test_is_not_void<int>();
+    test_is_not_void<int*>();
+    test_is_not_void<int&>();
+    test_is_not_void<int&&>();
+    test_is_not_void<double>();
+    test_is_not_void<const int*>();
+    test_is_not_void<char[3]>();
+    test_is_not_void<char[]>();
+    test_is_not_void<Union>();
+    test_is_not_void<Empty>();
+    test_is_not_void<bit_zero>();
+    test_is_not_void<NotEmpty>();
+    test_is_not_void<Abstract>();
+    test_is_not_void<Enum>();
+    test_is_not_void<FunctionPtr>();
+    test_is_not_void<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/lvalue_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/lvalue_ref.pass.cpp
new file mode 100644
index 0000000..1c431ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/lvalue_ref.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// lvalue_ref
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_lvalue_ref()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert( std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_lvalue_ref<int&>();
+    test_lvalue_ref<const int&>();
+
+//  LWG#2582
+    static_assert(!std::is_lvalue_reference<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/member_function_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/member_function_pointer.pass.cpp
new file mode 100644
index 0000000..fdbfd90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/member_function_pointer.pass.cpp
@@ -0,0 +1,230 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// member_function_pointer
+
+#include <type_traits>
+#include "test_macros.h"
+
+// NOTE: On Windows the function `test_is_member_function<void()>` and
+// `test_is_member_function<void() noexcept> has the same mangled despite being
+// a distinct instantiation. This causes Clang to emit an error. However
+// structs do not have this problem.
+template <class T>
+struct test_member_function_pointer_imp {
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert( std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+};
+
+template <class T>
+struct test_member_function_pointer :
+    test_member_function_pointer_imp<T>,
+    test_member_function_pointer_imp<const T>,
+    test_member_function_pointer_imp<volatile T>,
+    test_member_function_pointer_imp<const volatile T>
+{
+};
+
+class Class
+{
+};
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+  test_member_function_pointer<void (Class::*)()>();
+  test_member_function_pointer<void (Class::*)(int)>();
+  test_member_function_pointer<void (Class::*)(int, char)>();
+
+  test_member_function_pointer<void (Class::*)() const>();
+  test_member_function_pointer<void (Class::*)(int) const>();
+  test_member_function_pointer<void (Class::*)(int, char) const>();
+
+  test_member_function_pointer<void (Class::*)() volatile>();
+  test_member_function_pointer<void (Class::*)(int) volatile>();
+  test_member_function_pointer<void (Class::*)(int, char) volatile>();
+
+  test_member_function_pointer<void (Class::*)(...)>();
+  test_member_function_pointer<void (Class::*)(int, ...)>();
+  test_member_function_pointer<void (Class::*)(int, char, ...)>();
+
+  test_member_function_pointer<void (Class::*)(...) const>();
+  test_member_function_pointer<void (Class::*)(int, ...) const>();
+  test_member_function_pointer<void (Class::*)(int, char, ...) const>();
+
+  test_member_function_pointer<void (Class::*)(...) volatile>();
+  test_member_function_pointer<void (Class::*)(int, ...) volatile>();
+  test_member_function_pointer<void (Class::*)(int, char, ...) volatile>();
+
+
+// reference qualifiers on functions are a C++11 extension
+#if TEST_STD_VER >= 11
+  // Noexcept qualifiers
+  test_member_function_pointer<void (Class::*)() noexcept>();
+  test_member_function_pointer<void (Class::*)(int) noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) noexcept>();
+
+  test_member_function_pointer<void (Class::*)() const noexcept>();
+  test_member_function_pointer<void (Class::*)(int) const noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) const noexcept>();
+
+  test_member_function_pointer<void (Class::*)() volatile noexcept>();
+  test_member_function_pointer<void (Class::*)(int) volatile noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) volatile noexcept>();
+
+  test_member_function_pointer<void (Class::*)(...) noexcept>();
+  test_member_function_pointer<void (Class::*)(int, ...) noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char, ...) noexcept>();
+
+  test_member_function_pointer<void (Class::*)(...) const noexcept>();
+  test_member_function_pointer<void (Class::*)(int, ...) const noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char, ...) const noexcept>();
+
+  test_member_function_pointer<void (Class::*)(...) volatile noexcept>();
+  test_member_function_pointer<void (Class::*)(int, ...) volatile noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char, ...) volatile noexcept>();
+
+  // lvalue qualifiers
+  test_member_function_pointer<void (Class::*)() &>();
+  test_member_function_pointer<void (Class::*)(int) &>();
+  test_member_function_pointer<void (Class::*)(int, char) &>();
+  test_member_function_pointer<void (Class::*)(...) &>();
+  test_member_function_pointer<void (Class::*)(int,...) &>();
+  test_member_function_pointer<void (Class::*)(int, char,...) &>();
+
+  test_member_function_pointer<void (Class::*)() const &>();
+  test_member_function_pointer<void (Class::*)(int) const &>();
+  test_member_function_pointer<void (Class::*)(int, char) const &>();
+  test_member_function_pointer<void (Class::*)(...) const &>();
+  test_member_function_pointer<void (Class::*)(int,...) const &>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const &>();
+
+  test_member_function_pointer<void (Class::*)() volatile &>();
+  test_member_function_pointer<void (Class::*)(int) volatile &>();
+  test_member_function_pointer<void (Class::*)(int, char) volatile &>();
+  test_member_function_pointer<void (Class::*)(...) volatile &>();
+  test_member_function_pointer<void (Class::*)(int,...) volatile &>();
+  test_member_function_pointer<void (Class::*)(int, char,...) volatile &>();
+
+  test_member_function_pointer<void (Class::*)() const volatile &>();
+  test_member_function_pointer<void (Class::*)(int) const volatile &>();
+  test_member_function_pointer<void (Class::*)(int, char) const volatile &>();
+  test_member_function_pointer<void (Class::*)(...) const volatile &>();
+  test_member_function_pointer<void (Class::*)(int,...) const volatile &>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const volatile &>();
+
+  // Lvalue qualifiers with noexcept
+  test_member_function_pointer<void (Class::*)() & noexcept>();
+  test_member_function_pointer<void (Class::*)(int) & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) & noexcept>();
+  test_member_function_pointer<void (Class::*)(...) & noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) & noexcept>();
+
+  test_member_function_pointer<void (Class::*)() const & noexcept>();
+  test_member_function_pointer<void (Class::*)(int) const & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) const & noexcept>();
+  test_member_function_pointer<void (Class::*)(...) const & noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) const & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const & noexcept>();
+
+  test_member_function_pointer<void (Class::*)() volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int) volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(...) volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) volatile & noexcept>();
+
+  test_member_function_pointer<void (Class::*)() const volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int) const volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) const volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(...) const volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) const volatile & noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const volatile & noexcept>();
+
+  // RValue qualifiers
+  test_member_function_pointer<void (Class::*)() &&>();
+  test_member_function_pointer<void (Class::*)(int) &&>();
+  test_member_function_pointer<void (Class::*)(int, char) &&>();
+  test_member_function_pointer<void (Class::*)(...) &&>();
+  test_member_function_pointer<void (Class::*)(int,...) &&>();
+  test_member_function_pointer<void (Class::*)(int, char,...) &&>();
+
+  test_member_function_pointer<void (Class::*)() const &&>();
+  test_member_function_pointer<void (Class::*)(int) const &&>();
+  test_member_function_pointer<void (Class::*)(int, char) const &&>();
+  test_member_function_pointer<void (Class::*)(...) const &&>();
+  test_member_function_pointer<void (Class::*)(int,...) const &&>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const &&>();
+
+  test_member_function_pointer<void (Class::*)() volatile &&>();
+  test_member_function_pointer<void (Class::*)(int) volatile &&>();
+  test_member_function_pointer<void (Class::*)(int, char) volatile &&>();
+  test_member_function_pointer<void (Class::*)(...) volatile &&>();
+  test_member_function_pointer<void (Class::*)(int,...) volatile &&>();
+  test_member_function_pointer<void (Class::*)(int, char,...) volatile &&>();
+
+  test_member_function_pointer<void (Class::*)() const volatile &&>();
+  test_member_function_pointer<void (Class::*)(int) const volatile &&>();
+  test_member_function_pointer<void (Class::*)(int, char) const volatile &&>();
+  test_member_function_pointer<void (Class::*)(...) const volatile &&>();
+  test_member_function_pointer<void (Class::*)(int,...) const volatile &&>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const volatile &&>();
+
+  // RValue qualifiers with noexcept
+  test_member_function_pointer<void (Class::*)() && noexcept>();
+  test_member_function_pointer<void (Class::*)(int) && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) && noexcept>();
+  test_member_function_pointer<void (Class::*)(...) && noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) && noexcept>();
+
+  test_member_function_pointer<void (Class::*)() const && noexcept>();
+  test_member_function_pointer<void (Class::*)(int) const && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) const && noexcept>();
+  test_member_function_pointer<void (Class::*)(...) const && noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) const && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const && noexcept>();
+
+  test_member_function_pointer<void (Class::*)() volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int) volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(...) volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) volatile && noexcept>();
+
+  test_member_function_pointer<void (Class::*)() const volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int) const volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char) const volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(...) const volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int,...) const volatile && noexcept>();
+  test_member_function_pointer<void (Class::*)(int, char,...) const volatile && noexcept>();
+#endif
+
+//  LWG#2582
+  static_assert(!std::is_member_function_pointer<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/member_object_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/member_object_pointer.pass.cpp
new file mode 100644
index 0000000..b22e59e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/member_object_pointer.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// member_object_pointer
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_member_object_pointer_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert( std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_member_object_pointer()
+{
+    test_member_object_pointer_imp<T>();
+    test_member_object_pointer_imp<const T>();
+    test_member_object_pointer_imp<volatile T>();
+    test_member_object_pointer_imp<const volatile T>();
+}
+
+class Class
+{
+};
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_member_object_pointer<int Class::*>();
+
+//  LWG#2582
+    static_assert(!std::is_member_object_pointer<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/nullptr.pass.cpp
new file mode 100644
index 0000000..088d636
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/nullptr.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// nullptr_t
+//  is_null_pointer
+
+// UNSUPPORTED: c++03, c++11
+
+#include <type_traits>
+#include <cstddef>        // for std::nullptr_t
+
+#include "test_macros.h"
+
+template <class T>
+void test_nullptr_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+    static_assert( std::is_null_pointer<T>::value, "");
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_nullptr()
+{
+    test_nullptr_imp<T>();
+    test_nullptr_imp<const T>();
+    test_nullptr_imp<volatile T>();
+    test_nullptr_imp<const volatile T>();
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_nullptr<std::nullptr_t>();
+
+//  LWG#2582
+    static_assert(!std::is_null_pointer<incomplete_type>::value, "");
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/pointer.pass.cpp
new file mode 100644
index 0000000..68f4186
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/pointer.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// pointer
+
+#include <type_traits>
+#include "test_macros.h"
+
+
+template <class T>
+void test_pointer_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert( std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_pointer()
+{
+    test_pointer_imp<T>();
+    test_pointer_imp<const T>();
+    test_pointer_imp<volatile T>();
+    test_pointer_imp<const volatile T>();
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_pointer<void*>();
+    test_pointer<int*>();
+    test_pointer<const int*>();
+    test_pointer<void (*)(int)>();
+
+//  LWG#2582
+    static_assert(!std::is_pointer<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/rvalue_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/rvalue_ref.pass.cpp
new file mode 100644
index 0000000..b253779
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/rvalue_ref.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// rvalue_ref
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_rvalue_ref()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert( std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_rvalue_ref<int&&>();
+    test_rvalue_ref<const int&&>();
+
+//  LWG#2582
+    static_assert(!std::is_rvalue_reference<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/union.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/union.pass.cpp
new file mode 100644
index 0000000..a840f5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/union.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// union
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_union_imp()
+{
+    static_assert(!std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert( std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_union()
+{
+    test_union_imp<T>();
+    test_union_imp<const T>();
+    test_union_imp<volatile T>();
+    test_union_imp<const volatile T>();
+}
+
+union Union
+{
+    int _;
+    double __;
+};
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_union<Union>();
+
+//  LWG#2582
+    static_assert(!std::is_union<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/void.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/void.pass.cpp
new file mode 100644
index 0000000..d9defa5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/void.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// void
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_void_imp()
+{
+    static_assert( std::is_void<T>::value, "");
+#if TEST_STD_VER > 11
+    static_assert(!std::is_null_pointer<T>::value, "");
+#endif
+    static_assert(!std::is_integral<T>::value, "");
+    static_assert(!std::is_floating_point<T>::value, "");
+    static_assert(!std::is_array<T>::value, "");
+    static_assert(!std::is_pointer<T>::value, "");
+    static_assert(!std::is_lvalue_reference<T>::value, "");
+    static_assert(!std::is_rvalue_reference<T>::value, "");
+    static_assert(!std::is_member_object_pointer<T>::value, "");
+    static_assert(!std::is_member_function_pointer<T>::value, "");
+    static_assert(!std::is_enum<T>::value, "");
+    static_assert(!std::is_union<T>::value, "");
+    static_assert(!std::is_class<T>::value, "");
+    static_assert(!std::is_function<T>::value, "");
+}
+
+template <class T>
+void test_void()
+{
+    test_void_imp<T>();
+    test_void_imp<const T>();
+    test_void_imp<volatile T>();
+    test_void_imp<const volatile T>();
+}
+
+struct incomplete_type;
+
+int main(int, char**)
+{
+    test_void<void>();
+
+//  LWG#2582
+    static_assert(!std::is_void<incomplete_type>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/array.pass.cpp
new file mode 100644
index 0000000..c702e36
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/array.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// array
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_array_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_array()
+{
+    test_array_imp<T>();
+    test_array_imp<const T>();
+    test_array_imp<volatile T>();
+    test_array_imp<const volatile T>();
+}
+
+typedef char array[3];
+typedef const char const_array[3];
+typedef char incomplete_array[];
+
+class incomplete_type;
+
+int main(int, char**)
+{
+    test_array<array>();
+    test_array<const_array>();
+    test_array<incomplete_array>();
+    test_array<incomplete_type[]>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/class.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/class.pass.cpp
new file mode 100644
index 0000000..6368e2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/class.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// class
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_class_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_class()
+{
+    test_class_imp<T>();
+    test_class_imp<const T>();
+    test_class_imp<volatile T>();
+    test_class_imp<const volatile T>();
+}
+
+class Class
+{
+};
+
+class incomplete_type;
+
+int main(int, char**)
+{
+    test_class<Class>();
+    test_class<incomplete_type>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/enum.pass.cpp
new file mode 100644
index 0000000..9bca19c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/enum.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// enum
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_enum_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_enum()
+{
+    test_enum_imp<T>();
+    test_enum_imp<const T>();
+    test_enum_imp<volatile T>();
+    test_enum_imp<const volatile T>();
+}
+
+enum Enum {zero, one};
+
+int main(int, char**)
+{
+    test_enum<Enum>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/floating_point.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/floating_point.pass.cpp
new file mode 100644
index 0000000..cff884b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/floating_point.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// floating_point
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_floating_point_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert( std::is_arithmetic<T>::value, "");
+    static_assert( std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert(!std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_floating_point()
+{
+    test_floating_point_imp<T>();
+    test_floating_point_imp<const T>();
+    test_floating_point_imp<volatile T>();
+    test_floating_point_imp<const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_floating_point<float>();
+    test_floating_point<double>();
+    test_floating_point<long double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/function.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/function.pass.cpp
new file mode 100644
index 0000000..c17be80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/function.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// function
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_function_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert(!std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_function()
+{
+    test_function_imp<T>();
+    test_function_imp<const T>();
+    test_function_imp<volatile T>();
+    test_function_imp<const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_function<void ()>();
+    test_function<void (int)>();
+    test_function<int (double)>();
+    test_function<int (double, char)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/integral.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/integral.pass.cpp
new file mode 100644
index 0000000..a378ad8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/integral.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// integral
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_integral_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert( std::is_arithmetic<T>::value, "");
+    static_assert( std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert(!std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_integral()
+{
+    test_integral_imp<T>();
+    test_integral_imp<const T>();
+    test_integral_imp<volatile T>();
+    test_integral_imp<const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_integral<bool>();
+    test_integral<char>();
+    test_integral<signed char>();
+    test_integral<unsigned char>();
+    test_integral<wchar_t>();
+    test_integral<short>();
+    test_integral<unsigned short>();
+    test_integral<int>();
+    test_integral<unsigned int>();
+    test_integral<long>();
+    test_integral<unsigned long>();
+    test_integral<long long>();
+    test_integral<unsigned long long>();
+#ifndef TEST_HAS_NO_INT128
+    test_integral<__int128_t>();
+    test_integral<__uint128_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_arithmetic.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_arithmetic.pass.cpp
new file mode 100644
index 0000000..a6fc443
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_arithmetic.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_arithmetic
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_arithmetic()
+{
+    static_assert( std::is_arithmetic<T>::value, "");
+    static_assert( std::is_arithmetic<const T>::value, "");
+    static_assert( std::is_arithmetic<volatile T>::value, "");
+    static_assert( std::is_arithmetic<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_arithmetic_v<T>, "");
+    static_assert( std::is_arithmetic_v<const T>, "");
+    static_assert( std::is_arithmetic_v<volatile T>, "");
+    static_assert( std::is_arithmetic_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_arithmetic()
+{
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_arithmetic<const T>::value, "");
+    static_assert(!std::is_arithmetic<volatile T>::value, "");
+    static_assert(!std::is_arithmetic<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_arithmetic_v<T>, "");
+    static_assert(!std::is_arithmetic_v<const T>, "");
+    static_assert(!std::is_arithmetic_v<volatile T>, "");
+    static_assert(!std::is_arithmetic_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+enum EnumSigned : int { two };
+
+enum EnumUnsigned : unsigned { three };
+
+enum class EnumClass { zero, one };
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_arithmetic<short>();
+    test_is_arithmetic<unsigned short>();
+    test_is_arithmetic<int>();
+    test_is_arithmetic<unsigned int>();
+    test_is_arithmetic<long>();
+    test_is_arithmetic<unsigned long>();
+    test_is_arithmetic<bool>();
+    test_is_arithmetic<char>();
+    test_is_arithmetic<signed char>();
+    test_is_arithmetic<unsigned char>();
+    test_is_arithmetic<wchar_t>();
+    test_is_arithmetic<double>();
+
+    test_is_not_arithmetic<std::nullptr_t>();
+    test_is_not_arithmetic<void>();
+    test_is_not_arithmetic<int&>();
+    test_is_not_arithmetic<int&&>();
+    test_is_not_arithmetic<int*>();
+    test_is_not_arithmetic<const int*>();
+    test_is_not_arithmetic<char[3]>();
+    test_is_not_arithmetic<char[]>();
+    test_is_not_arithmetic<Union>();
+    test_is_not_arithmetic<Enum>();
+    test_is_not_arithmetic<EnumSigned>();
+    test_is_not_arithmetic<EnumUnsigned>();
+    test_is_not_arithmetic<EnumClass>();
+    test_is_not_arithmetic<FunctionPtr>();
+    test_is_not_arithmetic<Empty>();
+    test_is_not_arithmetic<incomplete_type>();
+    test_is_not_arithmetic<bit_zero>();
+    test_is_not_arithmetic<NotEmpty>();
+    test_is_not_arithmetic<Abstract>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_bounded_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_bounded_array.pass.cpp
new file mode 100644
index 0000000..6cade6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_bounded_array.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// type_traits
+
+// is_bounded_array<T>
+// T is an array type of known bound ([dcl.array])
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, bool B>
+void test_array_imp()
+{
+    static_assert( B == std::is_bounded_array<T>::value, "" );
+    static_assert( B == std::is_bounded_array_v<T>, "" );
+}
+
+template <class T, bool B>
+void test_array()
+{
+    test_array_imp<T, B>();
+    test_array_imp<const T, B>();
+    test_array_imp<volatile T, B>();
+    test_array_imp<const volatile T, B>();
+}
+
+class incomplete_type;
+
+class Empty {};
+union Union {};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+    // Non-array types
+    test_array<void,           false>();
+    test_array<std::nullptr_t, false>();
+    test_array<int,            false>();
+    test_array<double,         false>();
+    test_array<void *,         false>();
+    test_array<int &,          false>();
+    test_array<int &&,         false>();
+    test_array<Empty,          false>();
+    test_array<Union,          false>();
+    test_array<Abstract,       false>();
+    test_array<Enum,           false>();
+    test_array<FunctionPtr,    false>();
+
+    // Array types
+    test_array<char[3],           true>();
+    test_array<int[0],            false>();
+    test_array<char[],            false>();
+    test_array<incomplete_type[], false>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_compound.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_compound.pass.cpp
new file mode 100644
index 0000000..4d78906
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_compound.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_compound
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_compound()
+{
+    static_assert( std::is_compound<T>::value, "");
+    static_assert( std::is_compound<const T>::value, "");
+    static_assert( std::is_compound<volatile T>::value, "");
+    static_assert( std::is_compound<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_compound_v<T>, "");
+    static_assert( std::is_compound_v<const T>, "");
+    static_assert( std::is_compound_v<volatile T>, "");
+    static_assert( std::is_compound_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_compound()
+{
+    static_assert(!std::is_compound<T>::value, "");
+    static_assert(!std::is_compound<const T>::value, "");
+    static_assert(!std::is_compound<volatile T>::value, "");
+    static_assert(!std::is_compound<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_compound_v<T>, "");
+    static_assert(!std::is_compound_v<const T>, "");
+    static_assert(!std::is_compound_v<volatile T>, "");
+    static_assert(!std::is_compound_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_compound<char[3]>();
+    test_is_compound<char[]>();
+    test_is_compound<void *>();
+    test_is_compound<FunctionPtr>();
+    test_is_compound<int&>();
+    test_is_compound<int&&>();
+    test_is_compound<Union>();
+    test_is_compound<Empty>();
+    test_is_compound<incomplete_type>();
+    test_is_compound<bit_zero>();
+    test_is_compound<int*>();
+    test_is_compound<const int*>();
+    test_is_compound<Enum>();
+    test_is_compound<NotEmpty>();
+    test_is_compound<Abstract>();
+
+    test_is_not_compound<std::nullptr_t>();
+    test_is_not_compound<void>();
+    test_is_not_compound<int>();
+    test_is_not_compound<double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_fundamental.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_fundamental.pass.cpp
new file mode 100644
index 0000000..b1a3836
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_fundamental.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_fundamental
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_fundamental()
+{
+    static_assert( std::is_fundamental<T>::value, "");
+    static_assert( std::is_fundamental<const T>::value, "");
+    static_assert( std::is_fundamental<volatile T>::value, "");
+    static_assert( std::is_fundamental<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_fundamental_v<T>, "");
+    static_assert( std::is_fundamental_v<const T>, "");
+    static_assert( std::is_fundamental_v<volatile T>, "");
+    static_assert( std::is_fundamental_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_fundamental()
+{
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert(!std::is_fundamental<const T>::value, "");
+    static_assert(!std::is_fundamental<volatile T>::value, "");
+    static_assert(!std::is_fundamental<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_fundamental_v<T>, "");
+    static_assert(!std::is_fundamental_v<const T>, "");
+    static_assert(!std::is_fundamental_v<volatile T>, "");
+    static_assert(!std::is_fundamental_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_fundamental<std::nullptr_t>();
+    test_is_fundamental<void>();
+    test_is_fundamental<short>();
+    test_is_fundamental<unsigned short>();
+    test_is_fundamental<int>();
+    test_is_fundamental<unsigned int>();
+    test_is_fundamental<long>();
+    test_is_fundamental<unsigned long>();
+    test_is_fundamental<long long>();
+    test_is_fundamental<unsigned long long>();
+    test_is_fundamental<bool>();
+    test_is_fundamental<char>();
+    test_is_fundamental<signed char>();
+    test_is_fundamental<unsigned char>();
+    test_is_fundamental<wchar_t>();
+    test_is_fundamental<double>();
+    test_is_fundamental<float>();
+    test_is_fundamental<double>();
+    test_is_fundamental<long double>();
+    test_is_fundamental<char16_t>();
+    test_is_fundamental<char32_t>();
+
+    test_is_not_fundamental<char[3]>();
+    test_is_not_fundamental<char[]>();
+    test_is_not_fundamental<void *>();
+    test_is_not_fundamental<FunctionPtr>();
+    test_is_not_fundamental<int&>();
+    test_is_not_fundamental<int&&>();
+    test_is_not_fundamental<Union>();
+    test_is_not_fundamental<Empty>();
+    test_is_not_fundamental<incomplete_type>();
+    test_is_not_fundamental<bit_zero>();
+    test_is_not_fundamental<int*>();
+    test_is_not_fundamental<const int*>();
+    test_is_not_fundamental<Enum>();
+    test_is_not_fundamental<NotEmpty>();
+    test_is_not_fundamental<Abstract>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_member_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_member_pointer.pass.cpp
new file mode 100644
index 0000000..82f0ae9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_member_pointer.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_member_pointer
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_member_pointer()
+{
+    static_assert( std::is_member_pointer<T>::value, "");
+    static_assert( std::is_member_pointer<const T>::value, "");
+    static_assert( std::is_member_pointer<volatile T>::value, "");
+    static_assert( std::is_member_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_member_pointer_v<T>, "");
+    static_assert( std::is_member_pointer_v<const T>, "");
+    static_assert( std::is_member_pointer_v<volatile T>, "");
+    static_assert( std::is_member_pointer_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_member_pointer()
+{
+    static_assert(!std::is_member_pointer<T>::value, "");
+    static_assert(!std::is_member_pointer<const T>::value, "");
+    static_assert(!std::is_member_pointer<volatile T>::value, "");
+    static_assert(!std::is_member_pointer<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_member_pointer_v<T>, "");
+    static_assert(!std::is_member_pointer_v<const T>, "");
+    static_assert(!std::is_member_pointer_v<volatile T>, "");
+    static_assert(!std::is_member_pointer_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+//  Arithmetic types (3.9.1), enumeration types, pointer types, pointer to member types (3.9.2),
+//    std::nullptr_t, and cv-qualified versions of these types (3.9.3)
+//    are collectively called scalar types.
+
+    test_is_member_pointer<int Empty::*>();
+    test_is_member_pointer<void (Empty::*)(int)>();
+
+    test_is_not_member_pointer<std::nullptr_t>();
+    test_is_not_member_pointer<void>();
+    test_is_not_member_pointer<void *>();
+    test_is_not_member_pointer<int>();
+    test_is_not_member_pointer<int*>();
+    test_is_not_member_pointer<const int*>();
+    test_is_not_member_pointer<int&>();
+    test_is_not_member_pointer<int&&>();
+    test_is_not_member_pointer<double>();
+    test_is_not_member_pointer<char[3]>();
+    test_is_not_member_pointer<char[]>();
+    test_is_not_member_pointer<Union>();
+    test_is_not_member_pointer<Empty>();
+    test_is_not_member_pointer<incomplete_type>();
+    test_is_not_member_pointer<bit_zero>();
+    test_is_not_member_pointer<NotEmpty>();
+    test_is_not_member_pointer<Abstract>();
+    test_is_not_member_pointer<int(int)>();
+    test_is_not_member_pointer<Enum>();
+    test_is_not_member_pointer<FunctionPtr>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_object.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_object.pass.cpp
new file mode 100644
index 0000000..8a6f6d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_object.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_object
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_object()
+{
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_object<const T>::value, "");
+    static_assert( std::is_object<volatile T>::value, "");
+    static_assert( std::is_object<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_object_v<T>, "");
+    static_assert( std::is_object_v<const T>, "");
+    static_assert( std::is_object_v<volatile T>, "");
+    static_assert( std::is_object_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_object()
+{
+    static_assert(!std::is_object<T>::value, "");
+    static_assert(!std::is_object<const T>::value, "");
+    static_assert(!std::is_object<volatile T>::value, "");
+    static_assert(!std::is_object<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_object_v<T>, "");
+    static_assert(!std::is_object_v<const T>, "");
+    static_assert(!std::is_object_v<volatile T>, "");
+    static_assert(!std::is_object_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+// An object type is a (possibly cv-qualified) type that is not a function type,
+// not a reference type, and not a void type.
+
+    test_is_object<std::nullptr_t>();
+    test_is_object<void *>();
+    test_is_object<char[3]>();
+    test_is_object<char[]>();
+    test_is_object<int>();
+    test_is_object<int*>();
+    test_is_object<Union>();
+    test_is_object<int*>();
+    test_is_object<const int*>();
+    test_is_object<Enum>();
+    test_is_object<incomplete_type>();
+    test_is_object<bit_zero>();
+    test_is_object<NotEmpty>();
+    test_is_object<Abstract>();
+    test_is_object<FunctionPtr>();
+    test_is_object<int Empty::*>();
+    test_is_object<void (Empty::*)(int)>();
+
+    test_is_not_object<void>();
+    test_is_not_object<int&>();
+    test_is_not_object<int&&>();
+    test_is_not_object<int(int)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_reference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_reference.pass.cpp
new file mode 100644
index 0000000..e6fd1e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_reference.pass.cpp
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_reference
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_reference()
+{
+    static_assert( std::is_reference<T>::value, "");
+    static_assert( std::is_reference<const T>::value, "");
+    static_assert( std::is_reference<volatile T>::value, "");
+    static_assert( std::is_reference<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_reference_v<T>, "");
+    static_assert( std::is_reference_v<const T>, "");
+    static_assert( std::is_reference_v<volatile T>, "");
+    static_assert( std::is_reference_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_reference()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_reference<const T>::value, "");
+    static_assert(!std::is_reference<volatile T>::value, "");
+    static_assert(!std::is_reference<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_reference_v<T>, "");
+    static_assert(!std::is_reference_v<const T>, "");
+    static_assert(!std::is_reference_v<volatile T>, "");
+    static_assert(!std::is_reference_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+    test_is_reference<int&>();
+    test_is_reference<int&&>();
+    test_is_not_reference<std::nullptr_t>();
+    test_is_not_reference<void>();
+    test_is_not_reference<int>();
+    test_is_not_reference<double>();
+    test_is_not_reference<char[3]>();
+    test_is_not_reference<char[]>();
+    test_is_not_reference<void *>();
+    test_is_not_reference<FunctionPtr>();
+    test_is_not_reference<Union>();
+    test_is_not_reference<incomplete_type>();
+    test_is_not_reference<Empty>();
+    test_is_not_reference<bit_zero>();
+    test_is_not_reference<int*>();
+    test_is_not_reference<const int*>();
+    test_is_not_reference<Enum>();
+    test_is_not_reference<NotEmpty>();
+    test_is_not_reference<Abstract>();
+    test_is_not_reference<int(int)>();
+    test_is_not_reference<int Empty::*>();
+    test_is_not_reference<void (Empty::*)(int)>();
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_scalar.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_scalar.pass.cpp
new file mode 100644
index 0000000..804c684
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_scalar.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_scalar
+
+#include <type_traits>
+#include <cstddef>         // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_scalar()
+{
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert( std::is_scalar<const T>::value, "");
+    static_assert( std::is_scalar<volatile T>::value, "");
+    static_assert( std::is_scalar<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_scalar_v<T>, "");
+    static_assert( std::is_scalar_v<const T>, "");
+    static_assert( std::is_scalar_v<volatile T>, "");
+    static_assert( std::is_scalar_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_scalar()
+{
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert(!std::is_scalar<const T>::value, "");
+    static_assert(!std::is_scalar<volatile T>::value, "");
+    static_assert(!std::is_scalar<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_scalar_v<T>, "");
+    static_assert(!std::is_scalar_v<const T>, "");
+    static_assert(!std::is_scalar_v<volatile T>, "");
+    static_assert(!std::is_scalar_v<const volatile T>, "");
+#endif
+}
+
+class incomplete_type;
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+
+int main(int, char**)
+{
+//  Arithmetic types (3.9.1), enumeration types, pointer types, pointer to member types (3.9.2),
+//    std::nullptr_t, and cv-qualified versions of these types (3.9.3)
+//    are collectively called scalar types.
+
+    test_is_scalar<std::nullptr_t>();
+    test_is_scalar<short>();
+    test_is_scalar<unsigned short>();
+    test_is_scalar<int>();
+    test_is_scalar<unsigned int>();
+    test_is_scalar<long>();
+    test_is_scalar<unsigned long>();
+    test_is_scalar<bool>();
+    test_is_scalar<char>();
+    test_is_scalar<signed char>();
+    test_is_scalar<unsigned char>();
+    test_is_scalar<wchar_t>();
+    test_is_scalar<double>();
+    test_is_scalar<int*>();
+    test_is_scalar<const int*>();
+    test_is_scalar<int Empty::*>();
+    test_is_scalar<void (Empty::*)(int)>();
+    test_is_scalar<Enum>();
+    test_is_scalar<FunctionPtr>();
+
+    test_is_not_scalar<void>();
+    test_is_not_scalar<int&>();
+    test_is_not_scalar<int&&>();
+    test_is_not_scalar<char[3]>();
+    test_is_not_scalar<char[]>();
+    test_is_not_scalar<Union>();
+    test_is_not_scalar<Empty>();
+    test_is_not_scalar<incomplete_type>();
+    test_is_not_scalar<bit_zero>();
+    test_is_not_scalar<NotEmpty>();
+    test_is_not_scalar<Abstract>();
+    test_is_not_scalar<int(int)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_unbounded_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_unbounded_array.pass.cpp
new file mode 100644
index 0000000..ea53839
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/is_unbounded_array.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// type_traits
+
+// is_unbounded_array<T>
+// T is an array type of unknown bound ([dcl.array])
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, bool B>
+void test_array_imp()
+{
+    static_assert( B == std::is_unbounded_array<T>::value, "" );
+    static_assert( B == std::is_unbounded_array_v<T>, "" );
+}
+
+template <class T, bool B>
+void test_array()
+{
+    test_array_imp<T, B>();
+    test_array_imp<const T, B>();
+    test_array_imp<volatile T, B>();
+    test_array_imp<const volatile T, B>();
+}
+
+class incomplete_type;
+
+class Empty {};
+union Union {};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+//  Non-array types
+    test_array<void,           false>();
+    test_array<std::nullptr_t, false>();
+    test_array<int,            false>();
+    test_array<double,         false>();
+    test_array<void *,         false>();
+    test_array<int &,          false>();
+    test_array<int &&,         false>();
+    test_array<Empty,          false>();
+    test_array<Union,          false>();
+    test_array<Abstract,       false>();
+    test_array<Enum,           false>();
+    test_array<FunctionPtr,    false>();
+
+//  Array types
+    test_array<char[3],           false>();
+    test_array<int[0],            false>();
+    test_array<char[],            true>();
+    test_array<incomplete_type[], true>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/lvalue_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/lvalue_ref.pass.cpp
new file mode 100644
index 0000000..b9c206e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/lvalue_ref.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// lvalue_ref
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_lvalue_ref()
+{
+    static_assert( std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert(!std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+int main(int, char**)
+{
+    test_lvalue_ref<int&>();
+    test_lvalue_ref<const int&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/member_function_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/member_function_pointer.pass.cpp
new file mode 100644
index 0000000..005228c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/member_function_pointer.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// member_function_pointer
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_member_function_pointer_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert( std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_member_function_pointer()
+{
+    test_member_function_pointer_imp<T>();
+    test_member_function_pointer_imp<const T>();
+    test_member_function_pointer_imp<volatile T>();
+    test_member_function_pointer_imp<const volatile T>();
+}
+
+class Class
+{
+};
+
+int main(int, char**)
+{
+    test_member_function_pointer<void (Class::*)()>();
+    test_member_function_pointer<void (Class::*)(int)>();
+    test_member_function_pointer<void (Class::*)(int, char)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/member_object_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/member_object_pointer.pass.cpp
new file mode 100644
index 0000000..67a79cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/member_object_pointer.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// member_object_pointer
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_member_object_pointer_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert( std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_member_object_pointer()
+{
+    test_member_object_pointer_imp<T>();
+    test_member_object_pointer_imp<const T>();
+    test_member_object_pointer_imp<volatile T>();
+    test_member_object_pointer_imp<const volatile T>();
+}
+
+class Class
+{
+};
+
+int main(int, char**)
+{
+    test_member_object_pointer<int Class::*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/pointer.pass.cpp
new file mode 100644
index 0000000..2c45167
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/pointer.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// pointer
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_pointer_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert( std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_pointer()
+{
+    test_pointer_imp<T>();
+    test_pointer_imp<const T>();
+    test_pointer_imp<volatile T>();
+    test_pointer_imp<const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_pointer<void*>();
+    test_pointer<int*>();
+    test_pointer<const int*>();
+    test_pointer<void (*)(int)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/rvalue_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/rvalue_ref.pass.cpp
new file mode 100644
index 0000000..13b35d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/rvalue_ref.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// rvalue_ref
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_rvalue_ref()
+{
+    static_assert( std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert(!std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+int main(int, char**)
+{
+    test_rvalue_ref<int&&>();
+    test_rvalue_ref<const int&&>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp
new file mode 100644
index 0000000..d72f4db
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/union.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// union
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_union_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert(!std::is_fundamental<T>::value, "");
+    static_assert( std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert( std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_union()
+{
+    test_union_imp<T>();
+    test_union_imp<const T>();
+    test_union_imp<volatile T>();
+    test_union_imp<const volatile T>();
+}
+
+union Union
+{
+    int _;
+    double __;
+};
+
+int main(int, char**)
+{
+    test_union<Union>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/void.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/void.pass.cpp
new file mode 100644
index 0000000..3cd58d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.comp/void.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// void
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_void_imp()
+{
+    static_assert(!std::is_reference<T>::value, "");
+    static_assert(!std::is_arithmetic<T>::value, "");
+    static_assert( std::is_fundamental<T>::value, "");
+    static_assert(!std::is_object<T>::value, "");
+    static_assert(!std::is_scalar<T>::value, "");
+    static_assert(!std::is_compound<T>::value, "");
+    static_assert(!std::is_member_pointer<T>::value, "");
+}
+
+template <class T>
+void test_void()
+{
+    test_void_imp<T>();
+    test_void_imp<const T>();
+    test_void_imp<volatile T>();
+    test_void_imp<const volatile T>();
+}
+
+int main(int, char**)
+{
+    test_void<void>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/common.h b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/common.h
new file mode 100644
index 0000000..be9149d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/common.h
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_META_UNARY_COMP_COMMON_H
+#define TEST_META_UNARY_COMP_COMMON_H
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+struct TrivialNotNoexcept {
+  TrivialNotNoexcept() noexcept(false)                                     = default;
+  TrivialNotNoexcept(const TrivialNotNoexcept&) noexcept(false)            = default;
+  TrivialNotNoexcept(TrivialNotNoexcept&&) noexcept(false)                 = default;
+  TrivialNotNoexcept& operator=(const TrivialNotNoexcept&) noexcept(false) = default;
+  TrivialNotNoexcept& operator=(TrivialNotNoexcept&&) noexcept(false)      = default;
+};
+#endif
+
+class Empty {};
+
+struct NotEmpty {
+  virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero {
+  int : 0;
+};
+
+struct A {
+  A();
+  A(const A&);
+  A& operator=(const A&);
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+#endif // TEST_META_UNARY_COMP_COMMON_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
new file mode 100644
index 0000000..ce34c8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_unique_object_representations.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// has_unique_object_representations
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_has_unique_object_representations()
+{
+    static_assert( std::has_unique_object_representations<T>::value, "");
+    static_assert( std::has_unique_object_representations<const T>::value, "");
+    static_assert( std::has_unique_object_representations<volatile T>::value, "");
+    static_assert( std::has_unique_object_representations<const volatile T>::value, "");
+
+    static_assert( std::has_unique_object_representations_v<T>, "");
+    static_assert( std::has_unique_object_representations_v<const T>, "");
+    static_assert( std::has_unique_object_representations_v<volatile T>, "");
+    static_assert( std::has_unique_object_representations_v<const volatile T>, "");
+}
+
+template <class T>
+void test_has_not_has_unique_object_representations()
+{
+    static_assert(!std::has_unique_object_representations<T>::value, "");
+    static_assert(!std::has_unique_object_representations<const T>::value, "");
+    static_assert(!std::has_unique_object_representations<volatile T>::value, "");
+    static_assert(!std::has_unique_object_representations<const volatile T>::value, "");
+
+    static_assert(!std::has_unique_object_representations_v<T>, "");
+    static_assert(!std::has_unique_object_representations_v<const T>, "");
+    static_assert(!std::has_unique_object_representations_v<volatile T>, "");
+    static_assert(!std::has_unique_object_representations_v<const volatile T>, "");
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union EmptyUnion {};
+struct NonEmptyUnion {int x; unsigned y;};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    ~A();
+    unsigned foo;
+};
+
+struct B
+{
+   char bar;
+   int foo;
+};
+
+
+int main(int, char**)
+{
+    test_has_not_has_unique_object_representations<void>();
+    test_has_not_has_unique_object_representations<Empty>();
+    test_has_not_has_unique_object_representations<EmptyUnion>();
+    test_has_not_has_unique_object_representations<NotEmpty>();
+    test_has_not_has_unique_object_representations<bit_zero>();
+    test_has_not_has_unique_object_representations<Abstract>();
+    test_has_not_has_unique_object_representations<B>();
+
+//  I would expect all three of these to have unique representations.
+//  I would also expect that there are systems where they do not.
+//     test_has_not_has_unique_object_representations<int&>();
+//     test_has_not_has_unique_object_representations<int *>();
+//     test_has_not_has_unique_object_representations<double>();
+
+
+    test_has_unique_object_representations<unsigned>();
+    test_has_unique_object_representations<NonEmptyUnion>();
+    test_has_unique_object_representations<char[3]>();
+    test_has_unique_object_representations<char[]>();
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_virtual_destructor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_virtual_destructor.pass.cpp
new file mode 100644
index 0000000..57c1027
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/has_virtual_destructor.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// has_virtual_destructor
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+void test_has_virtual_destructor()
+{
+    static_assert( std::has_virtual_destructor<T>::value, "");
+    static_assert( std::has_virtual_destructor<const T>::value, "");
+    static_assert( std::has_virtual_destructor<volatile T>::value, "");
+    static_assert( std::has_virtual_destructor<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::has_virtual_destructor_v<T>, "");
+    static_assert( std::has_virtual_destructor_v<const T>, "");
+    static_assert( std::has_virtual_destructor_v<volatile T>, "");
+    static_assert( std::has_virtual_destructor_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_virtual_destructor()
+{
+    static_assert(!std::has_virtual_destructor<T>::value, "");
+    static_assert(!std::has_virtual_destructor<const T>::value, "");
+    static_assert(!std::has_virtual_destructor<volatile T>::value, "");
+    static_assert(!std::has_virtual_destructor<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::has_virtual_destructor_v<T>, "");
+    static_assert(!std::has_virtual_destructor_v<const T>, "");
+    static_assert(!std::has_virtual_destructor_v<volatile T>, "");
+    static_assert(!std::has_virtual_destructor_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    ~A();
+};
+
+int main(int, char**)
+{
+    test_has_not_virtual_destructor<void>();
+    test_has_not_virtual_destructor<A>();
+    test_has_not_virtual_destructor<int&>();
+    test_has_not_virtual_destructor<Union>();
+    test_has_not_virtual_destructor<Empty>();
+    test_has_not_virtual_destructor<int>();
+    test_has_not_virtual_destructor<double>();
+    test_has_not_virtual_destructor<int*>();
+    test_has_not_virtual_destructor<const int*>();
+    test_has_not_virtual_destructor<char[3]>();
+    test_has_not_virtual_destructor<char[]>();
+    test_has_not_virtual_destructor<bit_zero>();
+
+    test_has_virtual_destructor<Abstract>();
+    test_has_virtual_destructor<NotEmpty>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_abstract.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_abstract.pass.cpp
new file mode 100644
index 0000000..ee6a12e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_abstract.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_abstract
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_abstract()
+{
+    static_assert( std::is_abstract<T>::value, "");
+    static_assert( std::is_abstract<const T>::value, "");
+    static_assert( std::is_abstract<volatile T>::value, "");
+    static_assert( std::is_abstract<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_abstract_v<T>, "");
+    static_assert( std::is_abstract_v<const T>, "");
+    static_assert( std::is_abstract_v<volatile T>, "");
+    static_assert( std::is_abstract_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_abstract()
+{
+    static_assert(!std::is_abstract<T>::value, "");
+    static_assert(!std::is_abstract<const T>::value, "");
+    static_assert(!std::is_abstract<volatile T>::value, "");
+    static_assert(!std::is_abstract<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_abstract_v<T>, "");
+    static_assert(!std::is_abstract_v<const T>, "");
+    static_assert(!std::is_abstract_v<volatile T>, "");
+    static_assert(!std::is_abstract_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+template <class>
+struct AbstractTemplate {
+  virtual void test() = 0;
+};
+
+template <>
+struct AbstractTemplate<double> {};
+
+int main(int, char**)
+{
+    test_is_not_abstract<void>();
+    test_is_not_abstract<int&>();
+    test_is_not_abstract<int>();
+    test_is_not_abstract<double>();
+    test_is_not_abstract<int*>();
+    test_is_not_abstract<const int*>();
+    test_is_not_abstract<char[3]>();
+    test_is_not_abstract<char[]>();
+    test_is_not_abstract<Union>();
+    test_is_not_abstract<Empty>();
+    test_is_not_abstract<bit_zero>();
+    test_is_not_abstract<NotEmpty>();
+
+    test_is_abstract<Abstract>();
+    test_is_abstract<AbstractTemplate<int> >();
+    test_is_not_abstract<AbstractTemplate<double> >();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_aggregate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_aggregate.pass.cpp
new file mode 100644
index 0000000..277e154
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_aggregate.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <type_traits>
+
+// template <class T> struct is_aggregate;
+// template <class T> constexpr bool is_aggregate_v = is_aggregate<T>::value;
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_true()
+{
+    static_assert( std::is_aggregate<T>::value, "");
+    static_assert( std::is_aggregate<const T>::value, "");
+    static_assert( std::is_aggregate<volatile T>::value, "");
+    static_assert( std::is_aggregate<const volatile T>::value, "");
+    static_assert( std::is_aggregate_v<T>, "");
+    static_assert( std::is_aggregate_v<const T>, "");
+    static_assert( std::is_aggregate_v<volatile T>, "");
+    static_assert( std::is_aggregate_v<const volatile T>, "");
+}
+
+template <class T>
+void test_false()
+{
+    static_assert(!std::is_aggregate<T>::value, "");
+    static_assert(!std::is_aggregate<const T>::value, "");
+    static_assert(!std::is_aggregate<volatile T>::value, "");
+    static_assert(!std::is_aggregate<const volatile T>::value, "");
+    static_assert(!std::is_aggregate_v<T>, "");
+    static_assert(!std::is_aggregate_v<const T>, "");
+    static_assert(!std::is_aggregate_v<volatile T>, "");
+    static_assert(!std::is_aggregate_v<const volatile T>, "");
+}
+
+struct Aggregate {};
+struct HasCons { HasCons(int); };
+struct HasPriv {
+  void PreventUnusedPrivateMemberWarning();
+private:
+  int x;
+};
+struct Union { int x; void* y; };
+
+
+int main(int, char**)
+{
+  {
+    test_false<void>();
+    test_false<int>();
+    test_false<void*>();
+    test_false<void()>();
+    test_false<void() const>();
+    test_false<void(Aggregate::*)(int) const>();
+    test_false<Aggregate&>();
+    test_false<HasCons>();
+    test_false<HasPriv>();
+  }
+  {
+    test_true<Aggregate>();
+    test_true<Aggregate[]>();
+    test_true<Aggregate[42][101]>();
+    test_true<Union>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
new file mode 100644
index 0000000..8e5e2cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_assignable.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+struct A
+{
+};
+
+struct B
+{
+    void operator=(A);
+};
+
+template <class T, class U>
+void test_is_assignable()
+{
+    static_assert(( std::is_assignable<T, U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(  std::is_assignable_v<T, U>, "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_assignable()
+{
+    static_assert((!std::is_assignable<T, U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert( !std::is_assignable_v<T, U>, "");
+#endif
+}
+
+struct D;
+
+#if TEST_STD_VER >= 11
+struct C
+{
+    template <class U>
+    D operator,(U&&);
+};
+
+struct E
+{
+    C operator=(int);
+};
+#endif
+
+template <typename T>
+struct X { T t; };
+
+int main(int, char**)
+{
+    test_is_assignable<int&, int&> ();
+    test_is_assignable<int&, int> ();
+    test_is_assignable<int&, double> ();
+    test_is_assignable<B, A> ();
+    test_is_assignable<void*&, void*> ();
+
+#if TEST_STD_VER >= 11
+    test_is_assignable<E, int> ();
+
+    test_is_not_assignable<int, int&> ();
+    test_is_not_assignable<int, int> ();
+#endif
+    test_is_not_assignable<A, B> ();
+    test_is_not_assignable<void, const void> ();
+    test_is_not_assignable<const void, const void> ();
+    test_is_not_assignable<int(), int> ();
+
+//  pointer to incomplete template type
+    test_is_assignable<X<D>*&, X<D>*> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_const.pass.cpp
new file mode 100644
index 0000000..0af73cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_const.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_const
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_const()
+{
+    static_assert(!std::is_const<T>::value, "");
+    static_assert( std::is_const<const T>::value, "");
+    static_assert(!std::is_const<volatile T>::value, "");
+    static_assert( std::is_const<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_const_v<T>, "");
+    static_assert( std::is_const_v<const T>, "");
+    static_assert(!std::is_const_v<volatile T>, "");
+    static_assert( std::is_const_v<const volatile T>, "");
+#endif
+}
+
+struct A; // incomplete
+
+int main(int, char**)
+{
+    test_is_const<void>();
+    test_is_const<int>();
+    test_is_const<double>();
+    test_is_const<int*>();
+    test_is_const<const int*>();
+    test_is_const<char[3]>();
+    test_is_const<char[]>();
+
+    test_is_const<A>();
+
+    static_assert(!std::is_const<int&>::value, "");
+    static_assert(!std::is_const<const int&>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp
new file mode 100644
index 0000000..578efb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp
@@ -0,0 +1,259 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// template <class T, class... Args>
+//   struct is_constructible;
+
+#include <type_traits>
+#include "test_macros.h"
+
+struct A
+{
+    explicit A(int);
+    A(int, double);
+    A(int, long, double);
+#if TEST_STD_VER >= 11
+private:
+#endif
+    A(char);
+};
+
+struct Base {};
+struct Derived : public Base {};
+
+class Abstract
+{
+    virtual void foo() = 0;
+};
+
+class AbstractDestructor
+{
+    virtual ~AbstractDestructor() = 0;
+};
+
+struct PrivateDtor {
+  PrivateDtor(int) {}
+private:
+  ~PrivateDtor() {}
+};
+
+struct S {
+   template <class T>
+#if TEST_STD_VER >= 11
+   explicit
+#endif
+   operator T () const;
+};
+
+template <class To>
+struct ImplicitTo {
+  operator To();
+};
+
+#if TEST_STD_VER >= 11
+template <class To>
+struct ExplicitTo {
+   explicit operator To ();
+};
+#endif
+
+
+template <class T>
+void test_is_constructible()
+{
+    static_assert( (std::is_constructible<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_constructible_v<T>, "");
+#endif
+}
+
+template <class T, class A0>
+void test_is_constructible()
+{
+    static_assert(( std::is_constructible<T, A0>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_constructible_v<T, A0>), "");
+#endif
+}
+
+template <class T, class A0, class A1>
+void test_is_constructible()
+{
+    static_assert(( std::is_constructible<T, A0, A1>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_constructible_v<T, A0, A1>), "");
+#endif
+}
+
+template <class T, class A0, class A1, class A2>
+void test_is_constructible()
+{
+    static_assert(( std::is_constructible<T, A0, A1, A2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_constructible_v<T, A0, A1, A2>), "");
+#endif
+}
+
+template <class T>
+void test_is_not_constructible()
+{
+    static_assert((!std::is_constructible<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_constructible_v<T>), "");
+#endif
+}
+
+template <class T, class A0>
+void test_is_not_constructible()
+{
+    static_assert((!std::is_constructible<T, A0>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_constructible_v<T, A0>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    typedef Base B;
+    typedef Derived D;
+
+    test_is_constructible<int> ();
+    test_is_constructible<int, const int> ();
+    test_is_constructible<A, int> ();
+    test_is_constructible<A, int, double> ();
+    test_is_constructible<A, int, long, double> ();
+    test_is_constructible<int&, int&> ();
+
+    test_is_not_constructible<A> ();
+#if TEST_STD_VER >= 11
+    test_is_not_constructible<A, char> ();
+#else
+    test_is_constructible<A, char> ();
+#endif
+    test_is_not_constructible<A, void> ();
+    test_is_not_constructible<int, void()>();
+    test_is_not_constructible<int, void(&)()>();
+    test_is_not_constructible<int, void() const>();
+    test_is_not_constructible<int&, void>();
+    test_is_not_constructible<int&, void()>();
+    test_is_not_constructible<int&, void() const>();
+    test_is_not_constructible<int&, void(&)()>();
+
+    test_is_not_constructible<void> ();
+    test_is_not_constructible<const void> ();  // LWG 2738
+    test_is_not_constructible<volatile void> ();
+    test_is_not_constructible<const volatile void> ();
+    test_is_not_constructible<int&> ();
+    test_is_not_constructible<Abstract> ();
+    test_is_not_constructible<AbstractDestructor> ();
+    test_is_constructible<int, S>();
+    test_is_not_constructible<int&, S>();
+
+    test_is_constructible<void(&)(), void(&)()>();
+    test_is_constructible<void(&)(), void()>();
+#if TEST_STD_VER >= 11
+    test_is_constructible<void(&&)(), void(&&)()>();
+    test_is_constructible<void(&&)(), void()>();
+    test_is_constructible<void(&&)(), void(&)()>();
+#endif
+
+#if TEST_STD_VER >= 11
+    test_is_constructible<int const&, int>();
+    test_is_constructible<int const&, int&&>();
+
+    test_is_constructible<int&&, double&>();
+    test_is_constructible<void(&)(), void(&&)()>();
+
+    test_is_not_constructible<int&, int>();
+    test_is_not_constructible<int&, int const&>();
+    test_is_not_constructible<int&, int&&>();
+
+    test_is_constructible<int&&, int>();
+    test_is_constructible<int&&, int&&>();
+    test_is_not_constructible<int&&, int&>();
+    test_is_not_constructible<int&&, int const&&>();
+
+    test_is_constructible<Base, Derived>();
+    test_is_constructible<Base&, Derived&>();
+    test_is_not_constructible<Derived&, Base&>();
+    test_is_constructible<Base const&, Derived const&>();
+#ifndef TEST_COMPILER_GCC
+    test_is_not_constructible<Derived const&, Base const&>();
+    test_is_not_constructible<Derived const&, Base>();
+#endif
+
+    test_is_constructible<Base&&, Derived>();
+    test_is_constructible<Base&&, Derived&&>();
+#ifndef TEST_COMPILER_GCC
+    test_is_not_constructible<Derived&&, Base&&>();
+    test_is_not_constructible<Derived&&, Base>();
+#endif
+
+    // test that T must also be destructible
+    test_is_constructible<PrivateDtor&, PrivateDtor&>();
+    test_is_not_constructible<PrivateDtor, int>();
+
+    test_is_not_constructible<void() const, void() const>();
+    test_is_not_constructible<void() const, void*>();
+
+    test_is_constructible<int&, ImplicitTo<int&>>();
+    test_is_constructible<const int&, ImplicitTo<int&&>>();
+    test_is_constructible<int&&, ImplicitTo<int&&>>();
+    test_is_constructible<const int&, ImplicitTo<int>>();
+
+    test_is_not_constructible<B&&, B&>();
+    test_is_not_constructible<B&&, D&>();
+    test_is_constructible<B&&, ImplicitTo<D&&>>();
+    test_is_constructible<B&&, ImplicitTo<D&&>&>();
+    test_is_constructible<int&&, double&>();
+    test_is_constructible<const int&, ImplicitTo<int&>&>();
+    test_is_constructible<const int&, ImplicitTo<int&>>();
+    test_is_constructible<const int&, ExplicitTo<int&>&>();
+    test_is_constructible<const int&, ExplicitTo<int&>>();
+
+    test_is_constructible<const int&, ExplicitTo<int&>&>();
+    test_is_constructible<const int&, ExplicitTo<int&>>();
+
+
+    // Binding through reference-compatible type is required to perform
+    // direct-initialization as described in [over.match.ref] p. 1 b. 1:
+    //
+    // But the rvalue to lvalue reference binding isn't allowed according to
+    // [over.match.ref] despite Clang accepting it.
+    test_is_constructible<int&, ExplicitTo<int&>>();
+#ifndef TEST_COMPILER_GCC
+    test_is_constructible<const int&, ExplicitTo<int&&>>();
+#endif
+
+    static_assert(std::is_constructible<int&&, ExplicitTo<int&&>>::value, "");
+
+#ifdef __clang__
+    // FIXME Clang and GCC disagree on the validity of this expression.
+    test_is_constructible<const int&, ExplicitTo<int>>();
+    static_assert(std::is_constructible<int&&, ExplicitTo<int>>::value, "");
+#else
+    test_is_not_constructible<const int&, ExplicitTo<int>>();
+    test_is_not_constructible<int&&, ExplicitTo<int>>();
+#endif
+
+    // Binding through temporary behaves like copy-initialization,
+    // see [dcl.init.ref] p. 5, very last sub-bullet:
+    test_is_not_constructible<const int&, ExplicitTo<double&&>>();
+    test_is_not_constructible<int&&, ExplicitTo<double&&>>();
+
+    test_is_not_constructible<void()>();
+    test_is_not_constructible<void() const> ();
+    test_is_not_constructible<void() volatile> ();
+    test_is_not_constructible<void() &> ();
+    test_is_not_constructible<void() &&> ();
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_copy_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_copy_assignable.pass.cpp
new file mode 100644
index 0000000..3f10907
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_copy_assignable.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_copy_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_copy_assignable()
+{
+    static_assert(( std::is_copy_assignable<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_copy_assignable_v<T>), "");
+#endif
+}
+
+template <class T>
+void test_is_not_copy_assignable()
+{
+    static_assert((!std::is_copy_assignable<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_copy_assignable_v<T>), "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+struct A
+{
+    A();
+};
+
+class B
+{
+    B& operator=(const B&);
+};
+
+struct C
+{
+    void operator=(C&);  // not const
+};
+
+int main(int, char**)
+{
+    test_is_copy_assignable<int> ();
+    test_is_copy_assignable<int&> ();
+    test_is_copy_assignable<A> ();
+    test_is_copy_assignable<bit_zero> ();
+    test_is_copy_assignable<Union> ();
+    test_is_copy_assignable<NotEmpty> ();
+    test_is_copy_assignable<Empty> ();
+
+#if TEST_STD_VER >= 11
+    test_is_not_copy_assignable<const int> ();
+    test_is_not_copy_assignable<int[]> ();
+    test_is_not_copy_assignable<int[3]> ();
+    test_is_not_copy_assignable<B> ();
+#endif
+    test_is_not_copy_assignable<void> ();
+    test_is_not_copy_assignable<C> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_copy_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_copy_constructible.pass.cpp
new file mode 100644
index 0000000..f64c40e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_copy_constructible.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_copy_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_copy_constructible()
+{
+    static_assert( std::is_copy_constructible<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_copy_constructible_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_copy_constructible()
+{
+    static_assert(!std::is_copy_constructible<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_copy_constructible_v<T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+public:
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A(const A&);
+};
+
+class B
+{
+    B(const B&);
+};
+
+struct C
+{
+    C(C&);  // not const
+    void operator=(C&);  // not const
+};
+
+int main(int, char**)
+{
+    test_is_copy_constructible<A>();
+    test_is_copy_constructible<int&>();
+    test_is_copy_constructible<Union>();
+    test_is_copy_constructible<Empty>();
+    test_is_copy_constructible<int>();
+    test_is_copy_constructible<double>();
+    test_is_copy_constructible<int*>();
+    test_is_copy_constructible<const int*>();
+    test_is_copy_constructible<NotEmpty>();
+    test_is_copy_constructible<bit_zero>();
+
+    test_is_not_copy_constructible<char[3]>();
+    test_is_not_copy_constructible<char[]>();
+    test_is_not_copy_constructible<void>();
+    test_is_not_copy_constructible<Abstract>();
+    test_is_not_copy_constructible<C>();
+#if TEST_STD_VER >= 11
+    test_is_not_copy_constructible<B>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_default_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_default_constructible.pass.cpp
new file mode 100644
index 0000000..72cd97e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_default_constructible.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_default_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_default_constructible()
+{
+    static_assert( std::is_default_constructible<T>::value, "");
+    static_assert( std::is_default_constructible<const T>::value, "");
+    static_assert( std::is_default_constructible<volatile T>::value, "");
+    static_assert( std::is_default_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_default_constructible_v<T>, "");
+    static_assert( std::is_default_constructible_v<const T>, "");
+    static_assert( std::is_default_constructible_v<volatile T>, "");
+    static_assert( std::is_default_constructible_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_default_constructible()
+{
+    static_assert(!std::is_default_constructible<T>::value, "");
+    static_assert(!std::is_default_constructible<const T>::value, "");
+    static_assert(!std::is_default_constructible<volatile T>::value, "");
+    static_assert(!std::is_default_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_default_constructible_v<T>, "");
+    static_assert(!std::is_default_constructible_v<const T>, "");
+    static_assert(!std::is_default_constructible_v<volatile T>, "");
+    static_assert(!std::is_default_constructible_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NoDefaultConstructor
+{
+    NoDefaultConstructor(int) {}
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+public:
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A();
+};
+
+class B
+{
+    B();
+};
+
+int main(int, char**)
+{
+    test_is_default_constructible<A>();
+    test_is_default_constructible<Union>();
+    test_is_default_constructible<Empty>();
+    test_is_default_constructible<int>();
+    test_is_default_constructible<double>();
+    test_is_default_constructible<int*>();
+    test_is_default_constructible<const int*>();
+    test_is_default_constructible<char[3]>();
+    test_is_default_constructible<char[5][3]>();
+
+    test_is_default_constructible<NotEmpty>();
+    test_is_default_constructible<bit_zero>();
+
+    test_is_not_default_constructible<void>();
+    test_is_not_default_constructible<int&>();
+    test_is_not_default_constructible<char[]>();
+    test_is_not_default_constructible<char[][3]>();
+
+    test_is_not_default_constructible<Abstract>();
+    test_is_not_default_constructible<NoDefaultConstructor>();
+#if TEST_STD_VER >= 11
+    test_is_not_default_constructible<B>();
+    test_is_not_default_constructible<int&&>();
+    test_is_not_default_constructible<void()>();
+    test_is_not_default_constructible<void() const> ();
+    test_is_not_default_constructible<void() volatile> ();
+    test_is_not_default_constructible<void() &> ();
+    test_is_not_default_constructible<void() &&> ();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_destructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_destructible.pass.cpp
new file mode 100644
index 0000000..87abf32
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_destructible.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_destructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+
+template <class T>
+void test_is_destructible()
+{
+    static_assert( std::is_destructible<T>::value, "");
+    static_assert( std::is_destructible<const T>::value, "");
+    static_assert( std::is_destructible<volatile T>::value, "");
+    static_assert( std::is_destructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_destructible_v<T>, "");
+    static_assert( std::is_destructible_v<const T>, "");
+    static_assert( std::is_destructible_v<volatile T>, "");
+    static_assert( std::is_destructible_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_destructible()
+{
+    static_assert(!std::is_destructible<T>::value, "");
+    static_assert(!std::is_destructible<const T>::value, "");
+    static_assert(!std::is_destructible<volatile T>::value, "");
+    static_assert(!std::is_destructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_destructible_v<T>, "");
+    static_assert(!std::is_destructible_v<const T>, "");
+    static_assert(!std::is_destructible_v<volatile T>, "");
+    static_assert(!std::is_destructible_v<const volatile T>, "");
+#endif
+}
+
+class Empty {};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+struct A
+{
+    ~A();
+};
+
+typedef void (Function) ();
+
+struct PublicAbstract                    { public:    virtual void foo() = 0; };
+struct ProtectedAbstract                 { protected: virtual void foo() = 0; };
+struct PrivateAbstract                   { private:   virtual void foo() = 0; };
+
+struct PublicDestructor                  { public:    ~PublicDestructor() {}};
+struct ProtectedDestructor               { protected: ~ProtectedDestructor() {}};
+struct PrivateDestructor                 { private:   ~PrivateDestructor() {}};
+
+struct VirtualPublicDestructor           { public:    virtual ~VirtualPublicDestructor() {}};
+struct VirtualProtectedDestructor        { protected: virtual ~VirtualProtectedDestructor() {}};
+struct VirtualPrivateDestructor          { private:   virtual ~VirtualPrivateDestructor() {}};
+
+struct PurePublicDestructor              { public:    virtual ~PurePublicDestructor() = 0; };
+struct PureProtectedDestructor           { protected: virtual ~PureProtectedDestructor() = 0; };
+struct PurePrivateDestructor             { private:   virtual ~PurePrivateDestructor() = 0; };
+
+#if TEST_STD_VER >= 11
+struct DeletedPublicDestructor           { public:    ~DeletedPublicDestructor() = delete; };
+struct DeletedProtectedDestructor        { protected: ~DeletedProtectedDestructor() = delete; };
+struct DeletedPrivateDestructor          { private:   ~DeletedPrivateDestructor() = delete; };
+
+struct DeletedVirtualPublicDestructor    { public:    virtual ~DeletedVirtualPublicDestructor() = delete; };
+struct DeletedVirtualProtectedDestructor { protected: virtual ~DeletedVirtualProtectedDestructor() = delete; };
+struct DeletedVirtualPrivateDestructor   { private:   virtual ~DeletedVirtualPrivateDestructor() = delete; };
+#endif
+
+
+int main(int, char**)
+{
+    test_is_destructible<A>();
+    test_is_destructible<int&>();
+    test_is_destructible<Union>();
+    test_is_destructible<Empty>();
+    test_is_destructible<int>();
+    test_is_destructible<double>();
+    test_is_destructible<int*>();
+    test_is_destructible<const int*>();
+    test_is_destructible<char[3]>();
+    test_is_destructible<bit_zero>();
+    test_is_destructible<int[3]>();
+    test_is_destructible<ProtectedAbstract>();
+    test_is_destructible<PublicAbstract>();
+    test_is_destructible<PrivateAbstract>();
+    test_is_destructible<PublicDestructor>();
+    test_is_destructible<VirtualPublicDestructor>();
+    test_is_destructible<PurePublicDestructor>();
+
+    test_is_not_destructible<int[]>();
+    test_is_not_destructible<void>();
+    test_is_not_destructible<Function>();
+
+#if TEST_STD_VER >= 11
+    // Test access controlled destructors
+    test_is_not_destructible<ProtectedDestructor>();
+    test_is_not_destructible<PrivateDestructor>();
+    test_is_not_destructible<VirtualProtectedDestructor>();
+    test_is_not_destructible<VirtualPrivateDestructor>();
+    test_is_not_destructible<PureProtectedDestructor>();
+    test_is_not_destructible<PurePrivateDestructor>();
+
+    // Test deleted constructors
+    test_is_not_destructible<DeletedPublicDestructor>();
+    test_is_not_destructible<DeletedProtectedDestructor>();
+    test_is_not_destructible<DeletedPrivateDestructor>();
+    //test_is_not_destructible<DeletedVirtualPublicDestructor>(); // previously failed due to clang bug #20268
+    test_is_not_destructible<DeletedVirtualProtectedDestructor>();
+    test_is_not_destructible<DeletedVirtualPrivateDestructor>();
+
+    // Test private destructors
+    test_is_not_destructible<NotEmpty>();
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_empty.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_empty.pass.cpp
new file mode 100644
index 0000000..850af8b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_empty.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_empty
+
+// T is a non-union class type with:
+//  no non-static data members,
+//  no unnamed bit-fields of non-zero length,
+//  no virtual member functions,
+//  no virtual base classes,
+//  and no base class B for which is_empty_v<B> is false.
+
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_empty()
+{
+    static_assert( std::is_empty<T>::value, "");
+    static_assert( std::is_empty<const T>::value, "");
+    static_assert( std::is_empty<volatile T>::value, "");
+    static_assert( std::is_empty<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_empty_v<T>, "");
+    static_assert( std::is_empty_v<const T>, "");
+    static_assert( std::is_empty_v<volatile T>, "");
+    static_assert( std::is_empty_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_empty()
+{
+    static_assert(!std::is_empty<T>::value, "");
+    static_assert(!std::is_empty<const T>::value, "");
+    static_assert(!std::is_empty<volatile T>::value, "");
+    static_assert(!std::is_empty<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_empty_v<T>, "");
+    static_assert(!std::is_empty_v<const T>, "");
+    static_assert(!std::is_empty_v<volatile T>, "");
+    static_assert(!std::is_empty_v<const volatile T>, "");
+#endif
+}
+
+class Empty {};
+struct NotEmpty { int foo; };
+
+class VirtualFn
+{
+    virtual ~VirtualFn();
+};
+
+union Union {};
+
+struct EmptyBase    : public Empty {};
+struct VirtualBase  : virtual Empty {};
+struct NotEmptyBase : public NotEmpty {};
+
+struct StaticMember    { static int foo; };
+struct NonStaticMember {        int foo; };
+
+struct bit_zero
+{
+    int :  0;
+};
+
+struct bit_one
+{
+    int :  1;
+};
+
+int main(int, char**)
+{
+    test_is_not_empty<void>();
+    test_is_not_empty<int&>();
+    test_is_not_empty<int>();
+    test_is_not_empty<double>();
+    test_is_not_empty<int*>();
+    test_is_not_empty<const int*>();
+    test_is_not_empty<char[3]>();
+    test_is_not_empty<char[]>();
+    test_is_not_empty<Union>();
+    test_is_not_empty<NotEmpty>();
+    test_is_not_empty<VirtualFn>();
+    test_is_not_empty<VirtualBase>();
+    test_is_not_empty<NotEmptyBase>();
+    test_is_not_empty<NonStaticMember>();
+//    test_is_not_empty<bit_one>();
+
+    test_is_empty<Empty>();
+    test_is_empty<EmptyBase>();
+    test_is_empty<StaticMember>();
+    test_is_empty<bit_zero>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_final.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_final.pass.cpp
new file mode 100644
index 0000000..7278cf8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_final.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// type_traits
+
+// is_final
+
+#include <type_traits>
+#include "test_macros.h"
+
+struct P final { };
+union U1 { };
+union U2 final { };
+
+template <class T>
+void test_is_final()
+{
+    static_assert( std::is_final<T>::value, "");
+    static_assert( std::is_final<const T>::value, "");
+    static_assert( std::is_final<volatile T>::value, "");
+    static_assert( std::is_final<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_final_v<T>, "");
+    static_assert( std::is_final_v<const T>, "");
+    static_assert( std::is_final_v<volatile T>, "");
+    static_assert( std::is_final_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_final()
+{
+    static_assert(!std::is_final<T>::value, "");
+    static_assert(!std::is_final<const T>::value, "");
+    static_assert(!std::is_final<volatile T>::value, "");
+    static_assert(!std::is_final<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_final_v<T>, "");
+    static_assert(!std::is_final_v<const T>, "");
+    static_assert(!std::is_final_v<volatile T>, "");
+    static_assert(!std::is_final_v<const volatile T>, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_is_not_final<int>();
+    test_is_not_final<int*>();
+    test_is_final    <P>();
+    test_is_not_final<P*>();
+    test_is_not_final<U1>();
+    test_is_not_final<U1*>();
+    test_is_final    <U2>();
+    test_is_not_final<U2*>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_literal_type.deprecated.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_literal_type.deprecated.verify.cpp
new file mode 100644
index 0000000..b9ace12
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_literal_type.deprecated.verify.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+
+// type_traits
+
+// is_literal_type
+
+#include <type_traits>
+
+void f() {
+  [[maybe_unused]] std::is_literal_type<int> a; // expected-warning {{'is_literal_type<int>' is deprecated}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_literal_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_literal_type.pass.cpp
new file mode 100644
index 0000000..1c85560
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_literal_type.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_literal_type
+
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+#include <type_traits>
+#include <cstddef>       // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_is_literal_type()
+{
+    static_assert( std::is_literal_type<T>::value, "");
+    static_assert( std::is_literal_type<const T>::value, "");
+    static_assert( std::is_literal_type<volatile T>::value, "");
+    static_assert( std::is_literal_type<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_literal_type_v<T>, "");
+    static_assert( std::is_literal_type_v<const T>, "");
+    static_assert( std::is_literal_type_v<volatile T>, "");
+    static_assert( std::is_literal_type_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_literal_type()
+{
+    static_assert(!std::is_literal_type<T>::value, "");
+    static_assert(!std::is_literal_type<const T>::value, "");
+    static_assert(!std::is_literal_type<volatile T>::value, "");
+    static_assert(!std::is_literal_type<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_literal_type_v<T>, "");
+    static_assert(!std::is_literal_type_v<const T>, "");
+    static_assert(!std::is_literal_type_v<volatile T>, "");
+    static_assert(!std::is_literal_type_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+enum Enum {zero, one};
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+#if TEST_STD_VER >= 11
+    test_is_literal_type<std::nullptr_t>();
+#endif
+
+// Before C++14, void was not a literal type
+// In C++14, cv-void is a literal type
+#if TEST_STD_VER < 14
+    test_is_not_literal_type<void>();
+#else
+    test_is_literal_type<void>();
+#endif
+
+    test_is_literal_type<int>();
+    test_is_literal_type<int*>();
+    test_is_literal_type<const int*>();
+    test_is_literal_type<int&>();
+#if TEST_STD_VER >= 11
+    test_is_literal_type<int&&>();
+#endif
+    test_is_literal_type<double>();
+    test_is_literal_type<char[3]>();
+    test_is_literal_type<char[]>();
+    test_is_literal_type<Empty>();
+    test_is_literal_type<bit_zero>();
+    test_is_literal_type<Union>();
+    test_is_literal_type<Enum>();
+    test_is_literal_type<FunctionPtr>();
+
+    test_is_not_literal_type<NotEmpty>();
+    test_is_not_literal_type<Abstract>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_move_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_move_assignable.pass.cpp
new file mode 100644
index 0000000..170990f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_move_assignable.pass.cpp
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_move_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_move_assignable()
+{
+    static_assert(( std::is_move_assignable<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_move_assignable_v<T>), "");
+#endif
+}
+
+template <class T>
+void test_is_not_move_assignable()
+{
+    static_assert((!std::is_move_assignable<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_move_assignable_v<T>), "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+struct A
+{
+    A();
+};
+
+int main(int, char**)
+{
+    test_is_move_assignable<int> ();
+    test_is_move_assignable<A> ();
+    test_is_move_assignable<bit_zero> ();
+    test_is_move_assignable<Union> ();
+    test_is_move_assignable<NotEmpty> ();
+    test_is_move_assignable<Empty> ();
+
+    test_is_not_move_assignable<const int> ();
+    test_is_not_move_assignable<int[]> ();
+    test_is_not_move_assignable<int[3]> ();
+
+    test_is_not_move_assignable<void> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_move_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_move_constructible.pass.cpp
new file mode 100644
index 0000000..2ebafb1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_move_constructible.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_move_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_move_constructible()
+{
+    static_assert( std::is_move_constructible<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_move_constructible_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_move_constructible()
+{
+    static_assert(!std::is_move_constructible<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_move_constructible_v<T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+public:
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A(const A&);
+};
+
+struct B
+{
+    B(B&&);
+};
+
+int main(int, char**)
+{
+    test_is_not_move_constructible<char[3]>();
+    test_is_not_move_constructible<char[]>();
+    test_is_not_move_constructible<void>();
+    test_is_not_move_constructible<Abstract>();
+
+    test_is_move_constructible<A>();
+    test_is_move_constructible<int&>();
+    test_is_move_constructible<Union>();
+    test_is_move_constructible<Empty>();
+    test_is_move_constructible<int>();
+    test_is_move_constructible<double>();
+    test_is_move_constructible<int*>();
+    test_is_move_constructible<const int*>();
+    test_is_move_constructible<NotEmpty>();
+    test_is_move_constructible<bit_zero>();
+    test_is_move_constructible<B>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_assignable.pass.cpp
new file mode 100644
index 0000000..be1f016
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_assignable.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_nothrow_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_is_nothrow_assignable()
+{
+    static_assert(( std::is_nothrow_assignable<T, U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_nothrow_assignable_v<T, U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_nothrow_assignable()
+{
+    static_assert((!std::is_nothrow_assignable<T, U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_nothrow_assignable_v<T, U>), "");
+#endif
+}
+
+struct A
+{
+};
+
+struct B
+{
+    void operator=(A);
+};
+
+struct C
+{
+    void operator=(C&);  // not const
+};
+
+int main(int, char**)
+{
+    test_is_nothrow_assignable<int&, int&> ();
+    test_is_nothrow_assignable<int&, int> ();
+#if TEST_STD_VER >= 11
+    test_is_nothrow_assignable<int&, double> ();
+#endif
+
+    test_is_not_nothrow_assignable<int, int&> ();
+    test_is_not_nothrow_assignable<int, int> ();
+    test_is_not_nothrow_assignable<B, A> ();
+    test_is_not_nothrow_assignable<A, B> ();
+    test_is_not_nothrow_assignable<C, C&> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_constructible.pass.cpp
new file mode 100644
index 0000000..ad960d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_constructible.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// template <class T, class... Args>
+//   struct is_nothrow_constructible;
+
+#include <type_traits>
+#include "test_macros.h"
+
+#include "common.h"
+
+template <class T>
+void test_is_nothrow_constructible()
+{
+    static_assert(( std::is_nothrow_constructible<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_nothrow_constructible_v<T>), "");
+#endif
+}
+
+template <class T, class A0>
+void test_is_nothrow_constructible()
+{
+    static_assert(( std::is_nothrow_constructible<T, A0>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_nothrow_constructible_v<T, A0>), "");
+#endif
+}
+
+template <class T>
+void test_is_not_nothrow_constructible()
+{
+    static_assert((!std::is_nothrow_constructible<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_nothrow_constructible_v<T>), "");
+#endif
+}
+
+template <class T, class A0>
+void test_is_not_nothrow_constructible()
+{
+    static_assert((!std::is_nothrow_constructible<T, A0>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_nothrow_constructible_v<T, A0>), "");
+#endif
+}
+
+template <class T, class A0, class A1>
+void test_is_not_nothrow_constructible()
+{
+    static_assert((!std::is_nothrow_constructible<T, A0, A1>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_nothrow_constructible_v<T, A0, A1>), "");
+#endif
+}
+
+struct C
+{
+    C(C&);  // not const
+    void operator=(C&);  // not const
+};
+
+#if TEST_STD_VER >= 11
+struct Tuple {
+    Tuple(Empty&&) noexcept {}
+};
+#endif
+
+int main(int, char**)
+{
+    test_is_nothrow_constructible<int> ();
+    test_is_nothrow_constructible<int, const int&> ();
+    test_is_nothrow_constructible<Empty> ();
+    test_is_nothrow_constructible<Empty, const Empty&> ();
+
+    test_is_not_nothrow_constructible<A, int> ();
+    test_is_not_nothrow_constructible<A, int, double> ();
+    test_is_not_nothrow_constructible<A> ();
+    test_is_not_nothrow_constructible<C> ();
+#if TEST_STD_VER >= 11
+    test_is_nothrow_constructible<Tuple &&, Empty> (); // See bug #19616.
+
+    static_assert(!std::is_constructible<Tuple&, Empty>::value, "");
+    test_is_not_nothrow_constructible<Tuple &, Empty> (); // See bug #19616.
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_assignable.pass.cpp
new file mode 100644
index 0000000..61852ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_assignable.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_nothrow_copy_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+#include "common.h"
+
+template <class T>
+void test_has_nothrow_assign()
+{
+    static_assert( std::is_nothrow_copy_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_nothrow_copy_assignable_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_nothrow_assign()
+{
+    static_assert(!std::is_nothrow_copy_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_nothrow_copy_assignable_v<T>, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_has_nothrow_assign<int&>();
+    test_has_nothrow_assign<Union>();
+    test_has_nothrow_assign<Empty>();
+    test_has_nothrow_assign<int>();
+    test_has_nothrow_assign<double>();
+    test_has_nothrow_assign<int*>();
+    test_has_nothrow_assign<const int*>();
+    test_has_nothrow_assign<NotEmpty>();
+    test_has_nothrow_assign<bit_zero>();
+
+// TODO: enable the test for GCC once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is resolved
+#if TEST_STD_VER >= 11 && !defined(TEST_COMPILER_GCC)
+    test_has_not_nothrow_assign<TrivialNotNoexcept>();
+#endif
+    test_has_not_nothrow_assign<const int>();
+    test_has_not_nothrow_assign<void>();
+    test_has_not_nothrow_assign<A>();
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_constructible.pass.cpp
new file mode 100644
index 0000000..9e63bfe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_copy_constructible.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_nothrow_copy_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+#include "common.h"
+
+template <class T>
+void test_is_nothrow_copy_constructible()
+{
+    static_assert( std::is_nothrow_copy_constructible<T>::value, "");
+    static_assert( std::is_nothrow_copy_constructible<const T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_nothrow_copy_constructible_v<T>, "");
+    static_assert( std::is_nothrow_copy_constructible_v<const T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_nothrow_copy_constructor()
+{
+    static_assert(!std::is_nothrow_copy_constructible<T>::value, "");
+    static_assert(!std::is_nothrow_copy_constructible<const T>::value, "");
+    static_assert(!std::is_nothrow_copy_constructible<volatile T>::value, "");
+    static_assert(!std::is_nothrow_copy_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_nothrow_copy_constructible_v<T>, "");
+    static_assert(!std::is_nothrow_copy_constructible_v<const T>, "");
+    static_assert(!std::is_nothrow_copy_constructible_v<volatile T>, "");
+    static_assert(!std::is_nothrow_copy_constructible_v<const volatile T>, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_has_not_nothrow_copy_constructor<void>();
+    test_has_not_nothrow_copy_constructor<A>();
+#if TEST_STD_VER >= 11
+    test_has_not_nothrow_copy_constructor<TrivialNotNoexcept>();
+#endif
+
+    test_is_nothrow_copy_constructible<int&>();
+    test_is_nothrow_copy_constructible<Union>();
+    test_is_nothrow_copy_constructible<Empty>();
+    test_is_nothrow_copy_constructible<int>();
+    test_is_nothrow_copy_constructible<double>();
+    test_is_nothrow_copy_constructible<int*>();
+    test_is_nothrow_copy_constructible<const int*>();
+    test_is_nothrow_copy_constructible<bit_zero>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_default_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_default_constructible.pass.cpp
new file mode 100644
index 0000000..efe16bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_default_constructible.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_nothrow_default_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+#include "common.h"
+
+template <class T>
+void test_is_nothrow_default_constructible()
+{
+    static_assert( std::is_nothrow_default_constructible<T>::value, "");
+    static_assert( std::is_nothrow_default_constructible<const T>::value, "");
+    static_assert( std::is_nothrow_default_constructible<volatile T>::value, "");
+    static_assert( std::is_nothrow_default_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_nothrow_default_constructible_v<T>, "");
+    static_assert( std::is_nothrow_default_constructible_v<const T>, "");
+    static_assert( std::is_nothrow_default_constructible_v<volatile T>, "");
+    static_assert( std::is_nothrow_default_constructible_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_nothrow_default_constructor()
+{
+    static_assert(!std::is_nothrow_default_constructible<T>::value, "");
+    static_assert(!std::is_nothrow_default_constructible<const T>::value, "");
+    static_assert(!std::is_nothrow_default_constructible<volatile T>::value, "");
+    static_assert(!std::is_nothrow_default_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_nothrow_default_constructible_v<T>, "");
+    static_assert(!std::is_nothrow_default_constructible_v<const T>, "");
+    static_assert(!std::is_nothrow_default_constructible_v<volatile T>, "");
+    static_assert(!std::is_nothrow_default_constructible_v<const volatile T>, "");
+#endif
+}
+
+#if TEST_STD_VER >= 11
+struct DThrows
+{
+    DThrows()  noexcept(true) {}
+    ~DThrows() noexcept(false) {}
+};
+#endif
+
+int main(int, char**)
+{
+    test_has_not_nothrow_default_constructor<void>();
+    test_has_not_nothrow_default_constructor<int&>();
+    test_has_not_nothrow_default_constructor<A>();
+#if TEST_STD_VER >= 11
+    test_has_not_nothrow_default_constructor<DThrows>(); // This is LWG2116
+// TODO: enable the test for GCC once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is resolved
+#ifndef TEST_COMPILER_GCC
+    test_has_not_nothrow_default_constructor<TrivialNotNoexcept>();
+#endif
+#endif
+
+    test_is_nothrow_default_constructible<Union>();
+    test_is_nothrow_default_constructible<Empty>();
+    test_is_nothrow_default_constructible<int>();
+    test_is_nothrow_default_constructible<double>();
+    test_is_nothrow_default_constructible<int*>();
+    test_is_nothrow_default_constructible<const int*>();
+    test_is_nothrow_default_constructible<char[3]>();
+    test_is_nothrow_default_constructible<bit_zero>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_destructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_destructible.pass.cpp
new file mode 100644
index 0000000..60d5562
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_destructible.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_nothrow_destructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_nothrow_destructible()
+{
+    static_assert( std::is_nothrow_destructible<T>::value, "");
+    static_assert( std::is_nothrow_destructible<const T>::value, "");
+    static_assert( std::is_nothrow_destructible<volatile T>::value, "");
+    static_assert( std::is_nothrow_destructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_nothrow_destructible_v<T>, "");
+    static_assert( std::is_nothrow_destructible_v<const T>, "");
+    static_assert( std::is_nothrow_destructible_v<volatile T>, "");
+    static_assert( std::is_nothrow_destructible_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_nothrow_destructible()
+{
+    static_assert(!std::is_nothrow_destructible<T>::value, "");
+    static_assert(!std::is_nothrow_destructible<const T>::value, "");
+    static_assert(!std::is_nothrow_destructible<volatile T>::value, "");
+    static_assert(!std::is_nothrow_destructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_nothrow_destructible_v<T>, "");
+    static_assert(!std::is_nothrow_destructible_v<const T>, "");
+    static_assert(!std::is_nothrow_destructible_v<volatile T>, "");
+    static_assert(!std::is_nothrow_destructible_v<const volatile T>, "");
+#endif
+}
+
+
+struct PublicDestructor           { public:     ~PublicDestructor() {}};
+struct ProtectedDestructor        { protected:  ~ProtectedDestructor() {}};
+struct PrivateDestructor          { private:    ~PrivateDestructor() {}};
+
+struct VirtualPublicDestructor           { public:    virtual ~VirtualPublicDestructor() {}};
+struct VirtualProtectedDestructor        { protected: virtual ~VirtualProtectedDestructor() {}};
+struct VirtualPrivateDestructor          { private:   virtual ~VirtualPrivateDestructor() {}};
+
+struct PurePublicDestructor              { public:    virtual ~PurePublicDestructor() = 0; };
+struct PureProtectedDestructor           { protected: virtual ~PureProtectedDestructor() = 0; };
+struct PurePrivateDestructor             { private:   virtual ~PurePrivateDestructor() = 0; };
+
+class Empty
+{
+};
+
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual void foo() = 0;
+};
+
+
+int main(int, char**)
+{
+    test_is_not_nothrow_destructible<void>();
+    test_is_not_nothrow_destructible<char[]>();
+    test_is_not_nothrow_destructible<char[][3]>();
+
+    test_is_nothrow_destructible<int&>();
+    test_is_nothrow_destructible<int>();
+    test_is_nothrow_destructible<double>();
+    test_is_nothrow_destructible<int*>();
+    test_is_nothrow_destructible<const int*>();
+    test_is_nothrow_destructible<char[3]>();
+
+#if TEST_STD_VER >= 11
+    // requires noexcept. These are all destructible.
+    test_is_nothrow_destructible<PublicDestructor>();
+    test_is_nothrow_destructible<VirtualPublicDestructor>();
+    test_is_nothrow_destructible<PurePublicDestructor>();
+    test_is_nothrow_destructible<bit_zero>();
+    test_is_nothrow_destructible<Abstract>();
+    test_is_nothrow_destructible<Empty>();
+    test_is_nothrow_destructible<Union>();
+#endif
+    // requires access control
+    test_is_not_nothrow_destructible<ProtectedDestructor>();
+    test_is_not_nothrow_destructible<PrivateDestructor>();
+    test_is_not_nothrow_destructible<VirtualProtectedDestructor>();
+    test_is_not_nothrow_destructible<VirtualPrivateDestructor>();
+    test_is_not_nothrow_destructible<PureProtectedDestructor>();
+    test_is_not_nothrow_destructible<PurePrivateDestructor>();
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_move_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_move_assignable.pass.cpp
new file mode 100644
index 0000000..61b2145
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_move_assignable.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// has_nothrow_move_assign
+
+#include <type_traits>
+#include "test_macros.h"
+
+#include "common.h"
+
+template <class T>
+void test_has_nothrow_assign()
+{
+    static_assert( std::is_nothrow_move_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_nothrow_move_assignable_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_nothrow_assign()
+{
+    static_assert(!std::is_nothrow_move_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_nothrow_move_assignable_v<T>, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_has_nothrow_assign<int&>();
+    test_has_nothrow_assign<Union>();
+    test_has_nothrow_assign<Empty>();
+    test_has_nothrow_assign<int>();
+    test_has_nothrow_assign<double>();
+    test_has_nothrow_assign<int*>();
+    test_has_nothrow_assign<const int*>();
+    test_has_nothrow_assign<NotEmpty>();
+    test_has_nothrow_assign<bit_zero>();
+
+    test_has_not_nothrow_assign<void>();
+    test_has_not_nothrow_assign<A>();
+// TODO: enable the test for GCC once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is resolved
+#if TEST_STD_VER >= 11 && !defined(TEST_COMPILER_GCC)
+    test_has_not_nothrow_assign<TrivialNotNoexcept>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_move_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_move_constructible.pass.cpp
new file mode 100644
index 0000000..dc10ec3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_move_constructible.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// has_nothrow_move_constructor
+
+#include <type_traits>
+#include "test_macros.h"
+
+#include "common.h"
+
+template <class T>
+void test_is_nothrow_move_constructible()
+{
+    static_assert( std::is_nothrow_move_constructible<T>::value, "");
+    static_assert( std::is_nothrow_move_constructible<const T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_nothrow_move_constructible_v<T>, "");
+    static_assert( std::is_nothrow_move_constructible_v<const T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_nothrow_move_constructor()
+{
+    static_assert(!std::is_nothrow_move_constructible<T>::value, "");
+    static_assert(!std::is_nothrow_move_constructible<const T>::value, "");
+    static_assert(!std::is_nothrow_move_constructible<volatile T>::value, "");
+    static_assert(!std::is_nothrow_move_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_nothrow_move_constructible_v<T>, "");
+    static_assert(!std::is_nothrow_move_constructible_v<const T>, "");
+    static_assert(!std::is_nothrow_move_constructible_v<volatile T>, "");
+    static_assert(!std::is_nothrow_move_constructible_v<const volatile T>, "");
+#endif
+}
+
+int main(int, char**)
+{
+    test_has_not_nothrow_move_constructor<void>();
+    test_has_not_nothrow_move_constructor<A>();
+// TODO: enable the test for GCC once https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106611 is resolved
+#if TEST_STD_VER >= 11 && !defined(TEST_COMPILER_GCC)
+    test_has_not_nothrow_move_constructor<TrivialNotNoexcept>();
+#endif
+
+    test_is_nothrow_move_constructible<int&>();
+    test_is_nothrow_move_constructible<Union>();
+    test_is_nothrow_move_constructible<Empty>();
+    test_is_nothrow_move_constructible<int>();
+    test_is_nothrow_move_constructible<double>();
+    test_is_nothrow_move_constructible<int*>();
+    test_is_nothrow_move_constructible<const int*>();
+    test_is_nothrow_move_constructible<bit_zero>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_swappable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_swappable.pass.cpp
new file mode 100644
index 0000000..84742f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_swappable.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// is_swappable
+
+#include <type_traits>
+#include <vector>
+#include "test_macros.h"
+
+namespace MyNS {
+
+// Make the test types non-copyable so that generic std::swap is not valid.
+struct A {
+  A(A const&) = delete;
+  A& operator=(A const&) = delete;
+};
+
+struct B {
+  B(B const&) = delete;
+  B& operator=(B const&) = delete;
+};
+
+void swap(A&, A&) noexcept {}
+void swap(B&, B&) {}
+
+struct M {
+  M(M const&) = delete;
+  M& operator=(M const&) = delete;
+};
+
+void swap(M&&, M&&) noexcept {}
+
+struct ThrowingMove {
+    ThrowingMove(ThrowingMove&&) {}
+    ThrowingMove& operator=(ThrowingMove&&) { return *this; }
+};
+
+} // namespace MyNS
+
+int main(int, char**)
+{
+    using namespace MyNS;
+    {
+        // Test that is_swappable applies an lvalue reference to the type.
+        static_assert(std::is_nothrow_swappable<int>::value, "");
+        static_assert(std::is_nothrow_swappable<int&>::value, "");
+        static_assert(!std::is_nothrow_swappable<M>::value, "");
+        static_assert(!std::is_nothrow_swappable<M&&>::value, "");
+    }
+    {
+        // Test that it correctly deduces the noexcept of swap.
+        static_assert(std::is_nothrow_swappable<A>::value, "");
+        static_assert(!std::is_nothrow_swappable<B>::value
+                      && std::is_swappable<B>::value, "");
+        static_assert(!std::is_nothrow_swappable<ThrowingMove>::value
+                      && std::is_swappable<ThrowingMove>::value, "");
+    }
+    {
+        // Test that it doesn't drop the qualifiers
+        static_assert(!std::is_nothrow_swappable<const A>::value, "");
+    }
+    {
+        // test non-referenceable types
+        static_assert(!std::is_nothrow_swappable<void>::value, "");
+        static_assert(!std::is_nothrow_swappable<int() const>::value, "");
+        static_assert(!std::is_nothrow_swappable<int(int, ...) const &>::value, "");
+    }
+    {
+        // test for presence of is_nothrow_swappable_v
+        static_assert(std::is_nothrow_swappable_v<int>, "");
+        static_assert(!std::is_nothrow_swappable_v<void>, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_swappable_with.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_swappable_with.pass.cpp
new file mode 100644
index 0000000..fa324b7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_nothrow_swappable_with.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// is_nothrow_swappable_with
+
+#include <type_traits>
+#include <vector>
+#include "test_macros.h"
+
+namespace MyNS {
+
+struct A {
+  A(A const&) = delete;
+  A& operator=(A const&) = delete;
+};
+
+struct B {
+  B(B const&) = delete;
+  B& operator=(B const&) = delete;
+};
+
+struct C {};
+struct D {};
+
+void swap(A&, A&) {}
+
+void swap(A&, B&) noexcept {}
+void swap(B&, A&) noexcept {}
+
+void swap(A&, C&) noexcept {}
+void swap(C&, A&) {}
+
+struct M {};
+
+void swap(M&&, M&&) noexcept {}
+
+} // namespace MyNS
+
+int main(int, char**)
+{
+    using namespace MyNS;
+    {
+        // Test that is_swappable_with doesn't apply an lvalue reference
+        // to the type. Instead it is up to the user.
+        static_assert(!std::is_nothrow_swappable_with<int, int>::value, "");
+        static_assert(std::is_nothrow_swappable_with<int&, int&>::value, "");
+        static_assert(std::is_nothrow_swappable_with<M, M>::value, "");
+        static_assert(std::is_swappable_with<A&, A&>::value &&
+                      !std::is_nothrow_swappable_with<A&, A&>::value, "");
+    }
+    {
+        // test that heterogeneous swap is allowed only if both 'swap(A, B)' and
+        // 'swap(B, A)' are valid.
+        static_assert(std::is_nothrow_swappable_with<A&, B&>::value, "");
+        static_assert(!std::is_nothrow_swappable_with<A&, C&>::value &&
+                      std::is_swappable_with<A&, C&>::value, "");
+        static_assert(!std::is_nothrow_swappable_with<D&, C&>::value, "");
+    }
+    {
+        // test we guard against cv void inputs as required.
+        static_assert(!std::is_nothrow_swappable_with_v<void, int>, "");
+        static_assert(!std::is_nothrow_swappable_with_v<int, void>, "");
+        static_assert(!std::is_nothrow_swappable_with_v<const void, const volatile void>, "");
+
+    }
+    {
+        // test for presence of is_nothrow_swappable_with_v
+        static_assert(std::is_nothrow_swappable_with_v<int&, int&>, "");
+        static_assert(!std::is_nothrow_swappable_with_v<int&&, int&&>, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_pod.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_pod.pass.cpp
new file mode 100644
index 0000000..87fe6eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_pod.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_pod
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_pod()
+{
+    static_assert( std::is_pod<T>::value, "");
+    static_assert( std::is_pod<const T>::value, "");
+    static_assert( std::is_pod<volatile T>::value, "");
+    static_assert( std::is_pod<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_pod_v<T>, "");
+    static_assert( std::is_pod_v<const T>, "");
+    static_assert( std::is_pod_v<volatile T>, "");
+    static_assert( std::is_pod_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_pod()
+{
+    static_assert(!std::is_pod<T>::value, "");
+    static_assert(!std::is_pod<const T>::value, "");
+    static_assert(!std::is_pod<volatile T>::value, "");
+    static_assert(!std::is_pod<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_pod_v<T>, "");
+    static_assert(!std::is_pod_v<const T>, "");
+    static_assert(!std::is_pod_v<volatile T>, "");
+    static_assert(!std::is_pod_v<const volatile T>, "");
+#endif
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+int main(int, char**)
+{
+    test_is_not_pod<void>();
+    test_is_not_pod<int&>();
+    test_is_not_pod<Class>();
+
+    test_is_pod<int>();
+    test_is_pod<double>();
+    test_is_pod<int*>();
+    test_is_pod<const int*>();
+    test_is_pod<char[3]>();
+    test_is_pod<char[]>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_polymorphic.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_polymorphic.pass.cpp
new file mode 100644
index 0000000..8829fea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_polymorphic.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_polymorphic
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_polymorphic()
+{
+    static_assert( std::is_polymorphic<T>::value, "");
+    static_assert( std::is_polymorphic<const T>::value, "");
+    static_assert( std::is_polymorphic<volatile T>::value, "");
+    static_assert( std::is_polymorphic<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_polymorphic_v<T>, "");
+    static_assert( std::is_polymorphic_v<const T>, "");
+    static_assert( std::is_polymorphic_v<volatile T>, "");
+    static_assert( std::is_polymorphic_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_polymorphic()
+{
+    static_assert(!std::is_polymorphic<T>::value, "");
+    static_assert(!std::is_polymorphic<const T>::value, "");
+    static_assert(!std::is_polymorphic<volatile T>::value, "");
+    static_assert(!std::is_polymorphic<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_polymorphic_v<T>, "");
+    static_assert(!std::is_polymorphic_v<const T>, "");
+    static_assert(!std::is_polymorphic_v<volatile T>, "");
+    static_assert(!std::is_polymorphic_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+#if TEST_STD_VER >= 11
+class Final final {
+};
+#else
+class Final {
+};
+#endif
+
+int main(int, char**)
+{
+    test_is_not_polymorphic<void>();
+    test_is_not_polymorphic<int&>();
+    test_is_not_polymorphic<int>();
+    test_is_not_polymorphic<double>();
+    test_is_not_polymorphic<int*>();
+    test_is_not_polymorphic<const int*>();
+    test_is_not_polymorphic<char[3]>();
+    test_is_not_polymorphic<char[]>();
+    test_is_not_polymorphic<Union>();
+    test_is_not_polymorphic<Empty>();
+    test_is_not_polymorphic<bit_zero>();
+    test_is_not_polymorphic<Final>();
+    test_is_not_polymorphic<NotEmpty&>();
+    test_is_not_polymorphic<Abstract&>();
+
+    test_is_polymorphic<NotEmpty>();
+    test_is_polymorphic<Abstract>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_scoped_enum.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_scoped_enum.pass.cpp
new file mode 100644
index 0000000..ca72af3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_scoped_enum.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// type_traits
+
+// is_scoped_enum // C++2b
+
+#include <type_traits>
+#include <cstddef> // for std::nullptr_t
+#include "test_macros.h"
+
+template <class T>
+void test_positive() {
+  static_assert(std::is_scoped_enum<T>::value);
+  static_assert(std::is_scoped_enum<const T>::value);
+  static_assert(std::is_scoped_enum<volatile T>::value);
+  static_assert(std::is_scoped_enum<const volatile T>::value);
+
+  static_assert(std::is_scoped_enum_v<T>);
+  static_assert(std::is_scoped_enum_v<const T>);
+  static_assert(std::is_scoped_enum_v<volatile T>);
+  static_assert(std::is_scoped_enum_v<const volatile T>);
+}
+
+template <class T>
+void test_negative() {
+  static_assert(!std::is_scoped_enum<T>::value);
+  static_assert(!std::is_scoped_enum<const T>::value);
+  static_assert(!std::is_scoped_enum<volatile T>::value);
+  static_assert(!std::is_scoped_enum<const volatile T>::value);
+
+  static_assert(!std::is_scoped_enum_v<T>);
+  static_assert(!std::is_scoped_enum_v<const T>);
+  static_assert(!std::is_scoped_enum_v<volatile T>);
+  static_assert(!std::is_scoped_enum_v<const volatile T>);
+}
+
+class Empty {};
+
+class NotEmpty {
+  virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero {
+  int : 0;
+};
+
+class Abstract {
+  virtual ~Abstract() = 0;
+};
+
+enum Enum { zero, one };
+enum class CEnum1 { zero, one };
+enum class CEnum2;
+enum class CEnum3 : short;
+struct incomplete_type;
+
+using FunctionPtr = void (*)();
+using FunctionType = void();
+
+struct TestMembers {
+  static int static_method(int) { return 0; }
+  int method() { return 0; }
+
+  enum E1 { m_zero, m_one };
+  enum class CE1;
+};
+
+void func1();
+int func2(int);
+
+int main(int, char**) {
+  test_positive<CEnum1>();
+  test_positive<CEnum2>();
+  test_positive<CEnum3>();
+  test_positive<TestMembers::CE1>();
+
+  test_negative<Enum>();
+  test_negative<TestMembers::E1>();
+
+  test_negative<std::nullptr_t>();
+  test_negative<void>();
+  test_negative<int>();
+  test_negative<int&>();
+  test_negative<int&&>();
+  test_negative<int*>();
+  test_negative<double>();
+  test_negative<const int*>();
+  test_negative<char[3]>();
+  test_negative<char[]>();
+  test_negative<Union>();
+  test_negative<Empty>();
+  test_negative<bit_zero>();
+  test_negative<NotEmpty>();
+  test_negative<Abstract>();
+  test_negative<FunctionPtr>();
+  test_negative<FunctionType>();
+  test_negative<incomplete_type>();
+  test_negative<int TestMembers::*>();
+  test_negative<void (TestMembers::*)()>();
+
+  test_negative<decltype(func1)>();
+  test_negative<decltype(&func1)>();
+  test_negative<decltype(func2)>();
+  test_negative<decltype(&func2)>();
+  test_negative<decltype(TestMembers::static_method)>();
+  test_negative<decltype(&TestMembers::static_method)>();
+  test_negative<decltype(&TestMembers::method)>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_signed.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_signed.pass.cpp
new file mode 100644
index 0000000..6d11561
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_signed.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_signed
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_signed()
+{
+    static_assert( std::is_signed<T>::value, "");
+    static_assert( std::is_signed<const T>::value, "");
+    static_assert( std::is_signed<volatile T>::value, "");
+    static_assert( std::is_signed<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_signed_v<T>, "");
+    static_assert( std::is_signed_v<const T>, "");
+    static_assert( std::is_signed_v<volatile T>, "");
+    static_assert( std::is_signed_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_signed()
+{
+    static_assert(!std::is_signed<T>::value, "");
+    static_assert(!std::is_signed<const T>::value, "");
+    static_assert(!std::is_signed<volatile T>::value, "");
+    static_assert(!std::is_signed<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_signed_v<T>, "");
+    static_assert(!std::is_signed_v<const T>, "");
+    static_assert(!std::is_signed_v<volatile T>, "");
+    static_assert(!std::is_signed_v<const volatile T>, "");
+#endif
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+struct A; // incomplete
+
+class incomplete_type;
+
+class Empty {};
+
+class NotEmpty {
+  virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero {
+  int : 0;
+};
+
+class Abstract {
+  virtual ~Abstract() = 0;
+};
+
+enum Enum { zero, one };
+
+enum EnumSigned : int { two };
+
+enum EnumUnsigned : unsigned { three };
+
+enum class EnumClass { zero, one };
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+  // Cases where !is_arithmetic implies !is_signed
+  test_is_not_signed<std::nullptr_t>();
+  test_is_not_signed<void>();
+  test_is_not_signed<int&>();
+  test_is_not_signed<int&&>();
+  test_is_not_signed<Class>();
+  test_is_not_signed<int*>();
+  test_is_not_signed<const int*>();
+  test_is_not_signed<char[3]>();
+  test_is_not_signed<char[]>();
+  test_is_not_signed<Union>();
+  test_is_not_signed<Enum>();
+  test_is_not_signed<EnumSigned>();
+  test_is_not_signed<EnumUnsigned>();
+  test_is_not_signed<EnumClass>();
+  test_is_not_signed<FunctionPtr>();
+  test_is_not_signed<Empty>();
+  test_is_not_signed<incomplete_type>();
+  test_is_not_signed<A>();
+  test_is_not_signed<bit_zero>();
+  test_is_not_signed<NotEmpty>();
+  test_is_not_signed<Abstract>();
+
+  test_is_signed<signed char>();
+  test_is_signed<short>();
+  test_is_signed<int>();
+  test_is_signed<long>();
+  test_is_signed<float>();
+  test_is_signed<double>();
+
+  test_is_not_signed<unsigned char>();
+  test_is_not_signed<unsigned short>();
+  test_is_not_signed<unsigned int>();
+  test_is_not_signed<unsigned long>();
+
+  test_is_not_signed<bool>();
+  test_is_not_signed<unsigned>();
+
+#ifndef TEST_HAS_NO_INT128
+    test_is_signed<__int128_t>();
+    test_is_not_signed<__uint128_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_standard_layout.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_standard_layout.pass.cpp
new file mode 100644
index 0000000..fb096c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_standard_layout.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_standard_layout
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_standard_layout()
+{
+    static_assert( std::is_standard_layout<T>::value, "");
+    static_assert( std::is_standard_layout<const T>::value, "");
+    static_assert( std::is_standard_layout<volatile T>::value, "");
+    static_assert( std::is_standard_layout<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_standard_layout_v<T>, "");
+    static_assert( std::is_standard_layout_v<const T>, "");
+    static_assert( std::is_standard_layout_v<volatile T>, "");
+    static_assert( std::is_standard_layout_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_standard_layout()
+{
+    static_assert(!std::is_standard_layout<T>::value, "");
+    static_assert(!std::is_standard_layout<const T>::value, "");
+    static_assert(!std::is_standard_layout<volatile T>::value, "");
+    static_assert(!std::is_standard_layout<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_standard_layout_v<T>, "");
+    static_assert(!std::is_standard_layout_v<const T>, "");
+    static_assert(!std::is_standard_layout_v<volatile T>, "");
+    static_assert(!std::is_standard_layout_v<const volatile T>, "");
+#endif
+}
+
+template <class T1, class T2>
+struct pair
+{
+    T1 first;
+    T2 second;
+};
+
+int main(int, char**)
+{
+    test_is_standard_layout<int> ();
+    test_is_standard_layout<int[3]> ();
+    test_is_standard_layout<pair<int, double> > ();
+
+    test_is_not_standard_layout<int&> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable.pass.cpp
new file mode 100644
index 0000000..925ddad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// is_swappable
+
+#include <type_traits>
+#include <utility>
+#include <vector>
+#include "test_macros.h"
+
+namespace MyNS {
+
+// Make the test types non-copyable so that generic std::swap is not valid.
+struct A {
+  A(A const&) = delete;
+  A& operator=(A const&) = delete;
+};
+
+struct B {
+  B(B const&) = delete;
+  B& operator=(B const&) = delete;
+};
+
+struct C {};
+struct D {};
+
+void swap(A&, A&) {}
+
+void swap(A&, B&) {}
+void swap(B&, A&) {}
+
+void swap(A&, C&) {} // missing swap(C, A)
+void swap(D&, C&) {}
+
+struct M {
+  M(M const&) = delete;
+  M& operator=(M const&) = delete;
+};
+
+void swap(M&&, M&&) {}
+
+struct DeletedSwap {
+  friend void swap(DeletedSwap&, DeletedSwap&) = delete;
+};
+
+} // namespace MyNS
+
+namespace MyNS2 {
+
+struct AmbiguousSwap {};
+
+template <class T>
+void swap(T&, T&) {}
+
+} // end namespace MyNS2
+
+int main(int, char**)
+{
+    using namespace MyNS;
+    {
+        // Test that is_swappable applies an lvalue reference to the type.
+        static_assert(std::is_swappable<A>::value, "");
+        static_assert(std::is_swappable<A&>::value, "");
+        static_assert(!std::is_swappable<M>::value, "");
+        static_assert(!std::is_swappable<M&&>::value, "");
+    }
+    static_assert(!std::is_swappable<B>::value, "");
+    static_assert(std::is_swappable<C>::value, "");
+    {
+        // test non-referencable types
+        static_assert(!std::is_swappable<void>::value, "");
+        static_assert(!std::is_swappable<int() const>::value, "");
+        static_assert(!std::is_swappable<int() &>::value, "");
+    }
+    {
+        // test that a deleted swap is correctly handled.
+        static_assert(!std::is_swappable<DeletedSwap>::value, "");
+    }
+    {
+        // test that a swap with ambiguous overloads is handled correctly.
+        static_assert(!std::is_swappable<MyNS2::AmbiguousSwap>::value, "");
+    }
+    {
+        // test for presence of is_swappable_v
+        static_assert(std::is_swappable_v<int>, "");
+        static_assert(!std::is_swappable_v<M>, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable_include_order.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable_include_order.pass.cpp
new file mode 100644
index 0000000..5931e7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable_include_order.pass.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_swappable
+
+// IMPORTANT: The include order is part of the test. We want to pick up
+// the following definitions in this order:
+//   1) is_swappable, is_nothrow_swappable
+//   2) iter_swap, swap_ranges
+//   3) swap(T (&)[N], T (&)[N])
+// This test checks that (1) and (2) see forward declarations
+// for (3).
+#include <type_traits>
+#include <algorithm>
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    // Use a builtin type so we don't get ADL lookup.
+    typedef double T[17][29];
+    {
+        LIBCPP_STATIC_ASSERT(std::__is_swappable<T>::value, "");
+#if TEST_STD_VER > 14
+        static_assert(std::is_swappable_v<T>, "");
+#endif
+    }
+    {
+        T t1 = {};
+        T t2 = {};
+       std::iter_swap(t1, t2);
+       std::swap_ranges(t1, t1 + 17, t2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable_with.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable_with.pass.cpp
new file mode 100644
index 0000000..aadeec6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_swappable_with.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// type_traits
+
+// is_swappable_with
+
+#include <type_traits>
+#include <vector>
+#include "test_macros.h"
+
+namespace MyNS {
+
+struct A {
+  A(A const&) = delete;
+  A& operator=(A const&) = delete;
+};
+
+struct B {
+  B(B const&) = delete;
+  B& operator=(B const&) = delete;
+};
+
+struct C {};
+struct D {};
+
+void swap(A&, A&) {}
+
+void swap(A&, B&) {}
+void swap(B&, A&) {}
+
+void swap(A&, C&) {} // missing swap(C, A)
+void swap(D&, C&) {}
+
+struct M {};
+
+void swap(M&&, M&&) {}
+
+} // namespace MyNS
+
+int main(int, char**)
+{
+    using namespace MyNS;
+    {
+        // Test that is_swappable_with doesn't apply an lvalue reference
+        // to the type. Instead it is up to the user.
+        static_assert(!std::is_swappable_with<int, int>::value, "");
+        static_assert(std::is_swappable_with<int&, int&>::value, "");
+        static_assert(std::is_swappable_with<M, M>::value, "");
+        static_assert(std::is_swappable_with<A&, A&>::value, "");
+    }
+    {
+        // test that heterogeneous swap is allowed only if both 'swap(A, B)' and
+        // 'swap(B, A)' are valid.
+        static_assert(std::is_swappable_with<A&, B&>::value, "");
+        static_assert(!std::is_swappable_with<A&, C&>::value, "");
+        static_assert(!std::is_swappable_with<D&, C&>::value, "");
+    }
+    {
+        // test that cv void is guarded against as required.
+        static_assert(!std::is_swappable_with_v<void, int>, "");
+        static_assert(!std::is_swappable_with_v<int, void>, "");
+        static_assert(!std::is_swappable_with_v<const void, const volatile void>, "");
+    }
+    {
+        // test for presence of is_swappable_with_v
+        static_assert(std::is_swappable_with_v<int&, int&>, "");
+        static_assert(!std::is_swappable_with_v<D&, C&>, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivial.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivial.pass.cpp
new file mode 100644
index 0000000..8bb1b7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivial.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivial
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivial()
+{
+    static_assert( std::is_trivial<T>::value, "");
+    static_assert( std::is_trivial<const T>::value, "");
+    static_assert( std::is_trivial<volatile T>::value, "");
+    static_assert( std::is_trivial<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivial_v<T>, "");
+    static_assert( std::is_trivial_v<const T>, "");
+    static_assert( std::is_trivial_v<volatile T>, "");
+    static_assert( std::is_trivial_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_trivial()
+{
+    static_assert(!std::is_trivial<T>::value, "");
+    static_assert(!std::is_trivial<const T>::value, "");
+    static_assert(!std::is_trivial<volatile T>::value, "");
+    static_assert(!std::is_trivial<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivial_v<T>, "");
+    static_assert(!std::is_trivial_v<const T>, "");
+    static_assert(!std::is_trivial_v<volatile T>, "");
+    static_assert(!std::is_trivial_v<const volatile T>, "");
+#endif
+}
+
+struct A {};
+
+class B
+{
+public:
+    B();
+};
+
+int main(int, char**)
+{
+    test_is_trivial<int> ();
+    test_is_trivial<A> ();
+
+    test_is_not_trivial<int&> ();
+    test_is_not_trivial<volatile int&> ();
+    test_is_not_trivial<B> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_assignable.pass.cpp
new file mode 100644
index 0000000..5113651
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_assignable.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T, class U>
+void test_is_trivially_assignable()
+{
+    static_assert(( std::is_trivially_assignable<T, U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_trivially_assignable_v<T, U>), "");
+#endif
+}
+
+template <class T, class U>
+void test_is_not_trivially_assignable()
+{
+    static_assert((!std::is_trivially_assignable<T, U>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_trivially_assignable_v<T, U>), "");
+#endif
+}
+
+struct A
+{
+};
+
+struct B
+{
+    void operator=(A);
+};
+
+struct C
+{
+    void operator=(C&);  // not const
+};
+
+int main(int, char**)
+{
+    test_is_trivially_assignable<int&, int&> ();
+    test_is_trivially_assignable<int&, int> ();
+    test_is_trivially_assignable<int&, double> ();
+
+    test_is_not_trivially_assignable<int, int&> ();
+    test_is_not_trivially_assignable<int, int> ();
+    test_is_not_trivially_assignable<B, A> ();
+    test_is_not_trivially_assignable<A, B> ();
+    test_is_not_trivially_assignable<C&, C&> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_constructible.pass.cpp
new file mode 100644
index 0000000..42d54bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_constructible.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// template <class T, class... Args>
+//   struct is_trivially_constructible;
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivially_constructible()
+{
+    static_assert(( std::is_trivially_constructible<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_trivially_constructible_v<T>), "");
+#endif
+}
+
+template <class T, class A0>
+void test_is_trivially_constructible()
+{
+    static_assert(( std::is_trivially_constructible<T, A0>::value), "");
+#if TEST_STD_VER > 14
+    static_assert(( std::is_trivially_constructible_v<T, A0>), "");
+#endif
+}
+
+template <class T>
+void test_is_not_trivially_constructible()
+{
+    static_assert((!std::is_trivially_constructible<T>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_trivially_constructible_v<T>), "");
+#endif
+}
+
+template <class T, class A0>
+void test_is_not_trivially_constructible()
+{
+    static_assert((!std::is_trivially_constructible<T, A0>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_trivially_constructible_v<T, A0>), "");
+#endif
+}
+
+template <class T, class A0, class A1>
+void test_is_not_trivially_constructible()
+{
+    static_assert((!std::is_trivially_constructible<T, A0, A1>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((!std::is_trivially_constructible_v<T, A0, A1>), "");
+#endif
+}
+
+struct A
+{
+    explicit A(int);
+    A(int, double);
+};
+
+int main(int, char**)
+{
+    test_is_trivially_constructible<int> ();
+    test_is_trivially_constructible<int, const int&> ();
+
+    test_is_not_trivially_constructible<A, int> ();
+    test_is_not_trivially_constructible<A, int, double> ();
+    test_is_not_trivially_constructible<A> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copy_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copy_assignable.pass.cpp
new file mode 100644
index 0000000..17104f4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copy_assignable.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_copy_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_has_trivially_copy_assignable()
+{
+    static_assert( std::is_trivially_copy_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_copy_assignable_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_trivially_copy_assignable()
+{
+    static_assert(!std::is_trivially_copy_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_copy_assignable_v<T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A& operator=(const A&);
+};
+
+int main(int, char**)
+{
+    test_has_trivially_copy_assignable<int&>();
+    test_has_trivially_copy_assignable<Union>();
+    test_has_trivially_copy_assignable<Empty>();
+    test_has_trivially_copy_assignable<int>();
+    test_has_trivially_copy_assignable<double>();
+    test_has_trivially_copy_assignable<int*>();
+    test_has_trivially_copy_assignable<const int*>();
+    test_has_trivially_copy_assignable<bit_zero>();
+
+    test_has_not_trivially_copy_assignable<void>();
+    test_has_not_trivially_copy_assignable<A>();
+    test_has_not_trivially_copy_assignable<NotEmpty>();
+    test_has_not_trivially_copy_assignable<Abstract>();
+    test_has_not_trivially_copy_assignable<const Empty>();
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copy_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copy_constructible.pass.cpp
new file mode 100644
index 0000000..09647c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copy_constructible.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_copy_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivially_copy_constructible()
+{
+    static_assert( std::is_trivially_copy_constructible<T>::value, "");
+    static_assert( std::is_trivially_copy_constructible<const T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_copy_constructible_v<T>, "");
+    static_assert( std::is_trivially_copy_constructible_v<const T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_trivial_copy_constructor()
+{
+    static_assert(!std::is_trivially_copy_constructible<T>::value, "");
+    static_assert(!std::is_trivially_copy_constructible<const T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_copy_constructible_v<T>, "");
+    static_assert(!std::is_trivially_copy_constructible_v<const T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+public:
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A(const A&);
+};
+
+int main(int, char**)
+{
+    test_has_not_trivial_copy_constructor<void>();
+    test_has_not_trivial_copy_constructor<A>();
+    test_has_not_trivial_copy_constructor<Abstract>();
+    test_has_not_trivial_copy_constructor<NotEmpty>();
+
+    test_is_trivially_copy_constructible<int&>();
+    test_is_trivially_copy_constructible<Union>();
+    test_is_trivially_copy_constructible<Empty>();
+    test_is_trivially_copy_constructible<int>();
+    test_is_trivially_copy_constructible<double>();
+    test_is_trivially_copy_constructible<int*>();
+    test_is_trivially_copy_constructible<const int*>();
+    test_is_trivially_copy_constructible<bit_zero>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copyable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copyable.pass.cpp
new file mode 100644
index 0000000..4f0d31a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_copyable.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_copyable
+
+#include <type_traits>
+#include <cassert>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivially_copyable()
+{
+    static_assert( std::is_trivially_copyable<T>::value, "");
+    static_assert( std::is_trivially_copyable<const T>::value, "");
+    static_assert( std::is_trivially_copyable<volatile T>::value, "");
+    static_assert( std::is_trivially_copyable<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_copyable_v<T>, "");
+    static_assert( std::is_trivially_copyable_v<const T>, "");
+    static_assert( std::is_trivially_copyable_v<volatile T>, "");
+    static_assert( std::is_trivially_copyable_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_trivially_copyable()
+{
+    static_assert(!std::is_trivially_copyable<T>::value, "");
+    static_assert(!std::is_trivially_copyable<const T>::value, "");
+    static_assert(!std::is_trivially_copyable<volatile T>::value, "");
+    static_assert(!std::is_trivially_copyable<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_copyable_v<T>, "");
+    static_assert(!std::is_trivially_copyable_v<const T>, "");
+    static_assert(!std::is_trivially_copyable_v<volatile T>, "");
+    static_assert(!std::is_trivially_copyable_v<const volatile T>, "");
+#endif
+}
+
+struct A
+{
+    int i_;
+};
+
+struct B
+{
+    int i_;
+    ~B() {assert(i_ == 0);}
+};
+
+class C
+{
+public:
+    C();
+};
+
+int main(int, char**)
+{
+    test_is_trivially_copyable<int> ();
+    test_is_trivially_copyable<const int> ();
+    test_is_trivially_copyable<A> ();
+    test_is_trivially_copyable<const A> ();
+    test_is_trivially_copyable<C> ();
+
+    test_is_not_trivially_copyable<int&> ();
+    test_is_not_trivially_copyable<const A&> ();
+    test_is_not_trivially_copyable<B> ();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_default_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_default_constructible.pass.cpp
new file mode 100644
index 0000000..03ac030
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_default_constructible.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_default_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivially_default_constructible()
+{
+    static_assert( std::is_trivially_default_constructible<T>::value, "");
+    static_assert( std::is_trivially_default_constructible<const T>::value, "");
+    static_assert( std::is_trivially_default_constructible<volatile T>::value, "");
+    static_assert( std::is_trivially_default_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_default_constructible_v<T>, "");
+    static_assert( std::is_trivially_default_constructible_v<const T>, "");
+    static_assert( std::is_trivially_default_constructible_v<volatile T>, "");
+    static_assert( std::is_trivially_default_constructible_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_trivial_default_constructor()
+{
+    static_assert(!std::is_trivially_default_constructible<T>::value, "");
+    static_assert(!std::is_trivially_default_constructible<const T>::value, "");
+    static_assert(!std::is_trivially_default_constructible<volatile T>::value, "");
+    static_assert(!std::is_trivially_default_constructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_default_constructible_v<T>, "");
+    static_assert(!std::is_trivially_default_constructible_v<const T>, "");
+    static_assert(!std::is_trivially_default_constructible_v<volatile T>, "");
+    static_assert(!std::is_trivially_default_constructible_v<const volatile T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A();
+};
+
+int main(int, char**)
+{
+    test_has_not_trivial_default_constructor<void>();
+    test_has_not_trivial_default_constructor<int&>();
+    test_has_not_trivial_default_constructor<A>();
+    test_has_not_trivial_default_constructor<Abstract>();
+    test_has_not_trivial_default_constructor<NotEmpty>();
+
+    test_is_trivially_default_constructible<Union>();
+    test_is_trivially_default_constructible<Empty>();
+    test_is_trivially_default_constructible<int>();
+    test_is_trivially_default_constructible<double>();
+    test_is_trivially_default_constructible<int*>();
+    test_is_trivially_default_constructible<const int*>();
+    test_is_trivially_default_constructible<char[3]>();
+    test_is_trivially_default_constructible<bit_zero>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_destructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_destructible.pass.cpp
new file mode 100644
index 0000000..af1361c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_destructible.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_destructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivially_destructible()
+{
+    static_assert( std::is_trivially_destructible<T>::value, "");
+    static_assert( std::is_trivially_destructible<const T>::value, "");
+    static_assert( std::is_trivially_destructible<volatile T>::value, "");
+    static_assert( std::is_trivially_destructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_destructible_v<T>, "");
+    static_assert( std::is_trivially_destructible_v<const T>, "");
+    static_assert( std::is_trivially_destructible_v<volatile T>, "");
+    static_assert( std::is_trivially_destructible_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_trivially_destructible()
+{
+    static_assert(!std::is_trivially_destructible<T>::value, "");
+    static_assert(!std::is_trivially_destructible<const T>::value, "");
+    static_assert(!std::is_trivially_destructible<volatile T>::value, "");
+    static_assert(!std::is_trivially_destructible<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_destructible_v<T>, "");
+    static_assert(!std::is_trivially_destructible_v<const T>, "");
+    static_assert(!std::is_trivially_destructible_v<volatile T>, "");
+    static_assert(!std::is_trivially_destructible_v<const volatile T>, "");
+#endif
+}
+
+struct PublicDestructor           { public:     ~PublicDestructor() {}};
+struct ProtectedDestructor        { protected:  ~ProtectedDestructor() {}};
+struct PrivateDestructor          { private:    ~PrivateDestructor() {}};
+
+struct VirtualPublicDestructor           { public:    virtual ~VirtualPublicDestructor() {}};
+struct VirtualProtectedDestructor        { protected: virtual ~VirtualProtectedDestructor() {}};
+struct VirtualPrivateDestructor          { private:   virtual ~VirtualPrivateDestructor() {}};
+
+struct PurePublicDestructor              { public:    virtual ~PurePublicDestructor() = 0; };
+struct PureProtectedDestructor           { protected: virtual ~PureProtectedDestructor() = 0; };
+struct PurePrivateDestructor             { private:   virtual ~PurePrivateDestructor() = 0; };
+
+
+class Empty
+{
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual void foo() = 0;
+};
+
+class AbstractDestructor
+{
+    virtual ~AbstractDestructor() = 0;
+};
+
+struct A
+{
+    ~A();
+};
+
+int main(int, char**)
+{
+    test_is_not_trivially_destructible<void>();
+    test_is_not_trivially_destructible<A>();
+    test_is_not_trivially_destructible<char[]>();
+    test_is_not_trivially_destructible<VirtualPublicDestructor>();
+    test_is_not_trivially_destructible<PurePublicDestructor>();
+
+    test_is_trivially_destructible<Abstract>();
+    test_is_trivially_destructible<Union>();
+    test_is_trivially_destructible<Empty>();
+    test_is_trivially_destructible<int&>();
+    test_is_trivially_destructible<int>();
+    test_is_trivially_destructible<double>();
+    test_is_trivially_destructible<int*>();
+    test_is_trivially_destructible<const int*>();
+    test_is_trivially_destructible<char[3]>();
+    test_is_trivially_destructible<bit_zero>();
+
+#if TEST_STD_VER >= 11
+    // requires access control sfinae
+    test_is_not_trivially_destructible<ProtectedDestructor>();
+    test_is_not_trivially_destructible<PrivateDestructor>();
+    test_is_not_trivially_destructible<VirtualProtectedDestructor>();
+    test_is_not_trivially_destructible<VirtualPrivateDestructor>();
+    test_is_not_trivially_destructible<PureProtectedDestructor>();
+    test_is_not_trivially_destructible<PurePrivateDestructor>();
+#endif
+
+#if TEST_HAS_BUILTIN_IDENTIFIER(_Atomic)
+    test_is_trivially_destructible<_Atomic int>();
+    test_is_trivially_destructible<_Atomic float>();
+    test_is_trivially_destructible<_Atomic int*>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_move_assignable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_move_assignable.pass.cpp
new file mode 100644
index 0000000..b599ae5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_move_assignable.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_move_assignable
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_has_trivial_assign()
+{
+    static_assert( std::is_trivially_move_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_move_assignable_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_trivial_assign()
+{
+    static_assert(!std::is_trivially_move_assignable<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_move_assignable_v<T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A& operator=(const A&);
+};
+
+int main(int, char**)
+{
+    test_has_trivial_assign<int&>();
+    test_has_trivial_assign<Union>();
+    test_has_trivial_assign<Empty>();
+    test_has_trivial_assign<int>();
+    test_has_trivial_assign<double>();
+    test_has_trivial_assign<int*>();
+    test_has_trivial_assign<const int*>();
+    test_has_trivial_assign<bit_zero>();
+
+    test_has_not_trivial_assign<void>();
+    test_has_not_trivial_assign<A>();
+    test_has_not_trivial_assign<NotEmpty>();
+    test_has_not_trivial_assign<Abstract>();
+    test_has_not_trivial_assign<const Empty>();
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_move_constructible.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_move_constructible.pass.cpp
new file mode 100644
index 0000000..3503648
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_trivially_move_constructible.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_trivially_move_constructible
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_trivially_move_constructible()
+{
+    static_assert( std::is_trivially_move_constructible<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_trivially_move_constructible_v<T>, "");
+#endif
+}
+
+template <class T>
+void test_has_not_trivial_move_constructor()
+{
+    static_assert(!std::is_trivially_move_constructible<T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_trivially_move_constructible_v<T>, "");
+#endif
+}
+
+class Empty
+{
+};
+
+class NotEmpty
+{
+public:
+    virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero
+{
+    int :  0;
+};
+
+class Abstract
+{
+public:
+    virtual ~Abstract() = 0;
+};
+
+struct A
+{
+    A(const A&);
+};
+
+#if TEST_STD_VER >= 11
+
+struct MoveOnly1
+{
+    MoveOnly1(MoveOnly1&&);
+};
+
+struct MoveOnly2
+{
+    MoveOnly2(MoveOnly2&&) = default;
+};
+
+#endif
+
+int main(int, char**)
+{
+    test_has_not_trivial_move_constructor<void>();
+    test_has_not_trivial_move_constructor<A>();
+    test_has_not_trivial_move_constructor<Abstract>();
+    test_has_not_trivial_move_constructor<NotEmpty>();
+
+    test_is_trivially_move_constructible<Union>();
+    test_is_trivially_move_constructible<Empty>();
+    test_is_trivially_move_constructible<int>();
+    test_is_trivially_move_constructible<double>();
+    test_is_trivially_move_constructible<int*>();
+    test_is_trivially_move_constructible<const int*>();
+    test_is_trivially_move_constructible<bit_zero>();
+
+#if TEST_STD_VER >= 11
+    static_assert(!std::is_trivially_move_constructible<MoveOnly1>::value, "");
+    static_assert( std::is_trivially_move_constructible<MoveOnly2>::value, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_unsigned.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_unsigned.pass.cpp
new file mode 100644
index 0000000..abf21e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_unsigned.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_unsigned
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_unsigned()
+{
+    static_assert( std::is_unsigned<T>::value, "");
+    static_assert( std::is_unsigned<const T>::value, "");
+    static_assert( std::is_unsigned<volatile T>::value, "");
+    static_assert( std::is_unsigned<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert( std::is_unsigned_v<T>, "");
+    static_assert( std::is_unsigned_v<const T>, "");
+    static_assert( std::is_unsigned_v<volatile T>, "");
+    static_assert( std::is_unsigned_v<const volatile T>, "");
+#endif
+}
+
+template <class T>
+void test_is_not_unsigned()
+{
+    static_assert(!std::is_unsigned<T>::value, "");
+    static_assert(!std::is_unsigned<const T>::value, "");
+    static_assert(!std::is_unsigned<volatile T>::value, "");
+    static_assert(!std::is_unsigned<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_unsigned_v<T>, "");
+    static_assert(!std::is_unsigned_v<const T>, "");
+    static_assert(!std::is_unsigned_v<volatile T>, "");
+    static_assert(!std::is_unsigned_v<const volatile T>, "");
+#endif
+}
+
+class Class
+{
+public:
+    ~Class();
+};
+
+struct A; // incomplete
+
+class incomplete_type;
+
+class Empty {};
+
+class NotEmpty {
+  virtual ~NotEmpty();
+};
+
+union Union {};
+
+struct bit_zero {
+  int : 0;
+};
+
+class Abstract {
+  virtual ~Abstract() = 0;
+};
+
+enum Enum { zero, one };
+
+enum EnumSigned : int { two };
+
+enum EnumUnsigned : unsigned { three };
+
+enum class EnumClass { zero, one };
+
+typedef void (*FunctionPtr)();
+
+int main(int, char**)
+{
+  // Cases where !is_arithmetic implies !is_unsigned
+  test_is_not_unsigned<std::nullptr_t>();
+  test_is_not_unsigned<void>();
+  test_is_not_unsigned<int&>();
+  test_is_not_unsigned<int&&>();
+  test_is_not_unsigned<Class>();
+  test_is_not_unsigned<int*>();
+  test_is_not_unsigned<const int*>();
+  test_is_not_unsigned<char[3]>();
+  test_is_not_unsigned<char[]>();
+  test_is_not_unsigned<Union>();
+  test_is_not_unsigned<Enum>();
+  test_is_not_unsigned<EnumSigned>();
+  test_is_not_unsigned<EnumUnsigned>();
+  test_is_not_unsigned<EnumClass>();
+  test_is_not_unsigned<FunctionPtr>();
+  test_is_not_unsigned<Empty>();
+  test_is_not_unsigned<incomplete_type>();
+  test_is_not_unsigned<A>();
+  test_is_not_unsigned<bit_zero>();
+  test_is_not_unsigned<NotEmpty>();
+  test_is_not_unsigned<Abstract>();
+
+  test_is_not_unsigned<signed char>();
+  test_is_not_unsigned<short>();
+  test_is_not_unsigned<int>();
+  test_is_not_unsigned<long>();
+  test_is_not_unsigned<float>();
+  test_is_not_unsigned<double>();
+
+  test_is_unsigned<unsigned char>();
+  test_is_unsigned<unsigned short>();
+  test_is_unsigned<unsigned int>();
+  test_is_unsigned<unsigned long>();
+
+  test_is_unsigned<bool>();
+  test_is_unsigned<unsigned>();
+
+#ifndef TEST_HAS_NO_INT128
+    test_is_unsigned<__uint128_t>();
+    test_is_not_unsigned<__int128_t>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_volatile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_volatile.pass.cpp
new file mode 100644
index 0000000..cb0fc3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_volatile.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// type_traits
+
+// is_volatile
+
+#include <type_traits>
+#include "test_macros.h"
+
+template <class T>
+void test_is_volatile()
+{
+    static_assert(!std::is_volatile<T>::value, "");
+    static_assert(!std::is_volatile<const T>::value, "");
+    static_assert( std::is_volatile<volatile T>::value, "");
+    static_assert( std::is_volatile<const volatile T>::value, "");
+#if TEST_STD_VER > 14
+    static_assert(!std::is_volatile_v<T>, "");
+    static_assert(!std::is_volatile_v<const T>, "");
+    static_assert( std::is_volatile_v<volatile T>, "");
+    static_assert( std::is_volatile_v<const volatile T>, "");
+#endif
+}
+
+struct A; // incomplete
+
+int main(int, char**)
+{
+    test_is_volatile<void>();
+    test_is_volatile<int>();
+    test_is_volatile<double>();
+    test_is_volatile<int*>();
+    test_is_volatile<const int*>();
+    test_is_volatile<char[3]>();
+    test_is_volatile<char[]>();
+
+    test_is_volatile<A>();
+
+    static_assert(!std::is_volatile<int&>::value, "");
+    static_assert(!std::is_volatile<volatile int&>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/iterator_concept_conformance.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/iterator_concept_conformance.compile.pass.cpp
new file mode 100644
index 0000000..cca7d99
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/iterator_concept_conformance.compile.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// optional
+
+#include <optional>
+
+#include <iterator>
+
+static_assert(!std::indirectly_readable<std::optional<int> >);
+static_assert(!std::indirectly_writable<std::optional<int>, int>);
+static_assert(!std::weakly_incrementable<std::optional<int> >);
+static_assert(!std::indirectly_movable<std::optional<int>, std::optional<int>>);
+static_assert(!std::indirectly_movable_storable<std::optional<int>, std::optional<int>>);
+static_assert(!std::indirectly_copyable<std::optional<int>, std::optional<int>>);
+static_assert(!std::indirectly_copyable_storable<std::optional<int>, std::optional<int>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.bad_optional_access/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.bad_optional_access/default.pass.cpp
new file mode 100644
index 0000000..7f0439b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.bad_optional_access/default.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <optional>
+
+// class bad_optional_access is default constructible
+
+#include <optional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::bad_optional_access;
+    bad_optional_access ex;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.bad_optional_access/derive.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.bad_optional_access/derive.pass.cpp
new file mode 100644
index 0000000..ad1112f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.bad_optional_access/derive.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <optional>
+
+// class bad_optional_access : public exception
+
+#include <optional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::bad_optional_access;
+
+    static_assert(std::is_base_of<std::exception, bad_optional_access>::value, "");
+    static_assert(std::is_convertible<bad_optional_access*, std::exception*>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/equal.pass.cpp
new file mode 100644
index 0000000..0636da7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/equal.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator==(const optional<T>& x, const U& v);
+// template <class T, class U> constexpr bool operator==(const U& v, const optional<T>& x);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator==(const X& lhs, const X& rhs) {
+  return lhs.i_ == rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr T val(2);
+    constexpr O o1;      // disengaged
+    constexpr O o2{1};   // engaged
+    constexpr O o3{val}; // engaged
+
+    static_assert(!(o1 == T(1)), "");
+    static_assert((o2 == T(1)), "");
+    static_assert(!(o3 == T(1)), "");
+    static_assert((o3 == T(2)), "");
+    static_assert((o3 == val), "");
+
+    static_assert(!(T(1) == o1), "");
+    static_assert((T(1) == o2), "");
+    static_assert(!(T(1) == o3), "");
+    static_assert((T(2) == o3), "");
+    static_assert((val == o3), "");
+  }
+  {
+    using O = optional<int>;
+    constexpr O o1(42);
+    static_assert(o1 == 42l, "");
+    static_assert(!(101l == o1), "");
+  }
+  {
+    using O = optional<const int>;
+    constexpr O o1(42);
+    static_assert(o1 == 42, "");
+    static_assert(!(101 == o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/greater.pass.cpp
new file mode 100644
index 0000000..2010157
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/greater.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator>(const optional<T>& x, const U& v);
+// template <class T, class U> constexpr bool operator>(const U& v, const optional<T>& x);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator>(const X& lhs, const X& rhs) { return lhs.i_ > rhs.i_; }
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr T val(2);
+    constexpr O o1;      // disengaged
+    constexpr O o2{1};   // engaged
+    constexpr O o3{val}; // engaged
+
+    static_assert(!(o1 > T(1)), "");
+    static_assert(!(o2 > T(1)), ""); // equal
+    static_assert((o3 > T(1)), "");
+    static_assert(!(o2 > val), "");
+    static_assert(!(o3 > val), ""); // equal
+    static_assert(!(o3 > T(3)), "");
+
+    static_assert((T(1) > o1), "");
+    static_assert(!(T(1) > o2), ""); // equal
+    static_assert(!(T(1) > o3), "");
+    static_assert((val > o2), "");
+    static_assert(!(val > o3), ""); // equal
+    static_assert((T(3) > o3), "");
+  }
+  {
+    using O = optional<int>;
+    constexpr O o1(42);
+    static_assert(o1 > 11l, "");
+    static_assert(!(42l > o1), "");
+  }
+  {
+    using O = optional<const int>;
+    constexpr O o1(42);
+    static_assert(o1 > 11, "");
+    static_assert(!(42 > o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/greater_equal.pass.cpp
new file mode 100644
index 0000000..2e1e9b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/greater_equal.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator>=(const optional<T>& x, const U& v);
+// template <class T, class U> constexpr bool operator>=(const U& v, const optional<T>& x);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator>=(const X& lhs, const X& rhs) {
+  return lhs.i_ >= rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr T val(2);
+    constexpr O o1;      // disengaged
+    constexpr O o2{1};   // engaged
+    constexpr O o3{val}; // engaged
+
+    static_assert(!(o1 >= T(1)), "");
+    static_assert((o2 >= T(1)), ""); // equal
+    static_assert((o3 >= T(1)), "");
+    static_assert(!(o2 >= val), "");
+    static_assert((o3 >= val), ""); // equal
+    static_assert(!(o3 >= T(3)), "");
+
+    static_assert((T(1) >= o1), "");
+    static_assert((T(1) >= o2), ""); // equal
+    static_assert(!(T(1) >= o3), "");
+    static_assert((val >= o2), "");
+    static_assert((val >= o3), ""); // equal
+    static_assert((T(3) >= o3), "");
+  }
+  {
+    using O = optional<int>;
+    constexpr O o1(42);
+    static_assert(o1 >= 42l, "");
+    static_assert(!(11l >= o1), "");
+  }
+  {
+    using O = optional<const int>;
+    constexpr O o1(42);
+    static_assert(o1 >= 42, "");
+    static_assert(!(11 >= o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/less_equal.pass.cpp
new file mode 100644
index 0000000..7026c24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/less_equal.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator<=(const optional<T>& x, const U& v);
+// template <class T, class U> constexpr bool operator<=(const U& v, const optional<T>& x);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator<=(const X& lhs, const X& rhs) {
+  return lhs.i_ <= rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr T val(2);
+    constexpr O o1;      // disengaged
+    constexpr O o2{1};   // engaged
+    constexpr O o3{val}; // engaged
+
+    static_assert((o1 <= T(1)), "");
+    static_assert((o2 <= T(1)), ""); // equal
+    static_assert(!(o3 <= T(1)), "");
+    static_assert((o2 <= val), "");
+    static_assert((o3 <= val), ""); // equal
+    static_assert((o3 <= T(3)), "");
+
+    static_assert(!(T(1) <= o1), "");
+    static_assert((T(1) <= o2), ""); // equal
+    static_assert((T(1) <= o3), "");
+    static_assert(!(val <= o2), "");
+    static_assert((val <= o3), ""); // equal
+    static_assert(!(T(3) <= o3), "");
+  }
+  {
+    using O = optional<int>;
+    constexpr O o1(42);
+    static_assert(o1 <= 42l, "");
+    static_assert(!(101l <= o1), "");
+  }
+  {
+    using O = optional<const int>;
+    constexpr O o1(42);
+    static_assert(o1 <= 42, "");
+    static_assert(!(101 <= o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/less_than.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/less_than.pass.cpp
new file mode 100644
index 0000000..b3d9868
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/less_than.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator<(const optional<T>& x, const U& v);
+// template <class T, class U> constexpr bool operator<(const U& v, const optional<T>& x);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator<(const X& lhs, const X& rhs) { return lhs.i_ < rhs.i_; }
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr T val(2);
+    constexpr O o1;      // disengaged
+    constexpr O o2{1};   // engaged
+    constexpr O o3{val}; // engaged
+
+    static_assert((o1 < T(1)), "");
+    static_assert(!(o2 < T(1)), ""); // equal
+    static_assert(!(o3 < T(1)), "");
+    static_assert((o2 < val), "");
+    static_assert(!(o3 < val), ""); // equal
+    static_assert((o3 < T(3)), "");
+
+    static_assert(!(T(1) < o1), "");
+    static_assert(!(T(1) < o2), ""); // equal
+    static_assert((T(1) < o3), "");
+    static_assert(!(val < o2), "");
+    static_assert(!(val < o3), ""); // equal
+    static_assert(!(T(3) < o3), "");
+  }
+  {
+    using O = optional<int>;
+    constexpr O o1(42);
+    static_assert(o1 < 101l, "");
+    static_assert(!(42l < o1), "");
+  }
+  {
+    using O = optional<const int>;
+    constexpr O o1(42);
+    static_assert(o1 < 101, "");
+    static_assert(!(42 < o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/not_equal.pass.cpp
new file mode 100644
index 0000000..36bc526
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.comp_with_t/not_equal.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator!=(const optional<T>& x, const U& v);
+// template <class T, class U> constexpr bool operator!=(const U& v, const optional<T>& x);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator!=(const X& lhs, const X& rhs) {
+  return lhs.i_ != rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr T val(2);
+    constexpr O o1;      // disengaged
+    constexpr O o2{1};   // engaged
+    constexpr O o3{val}; // engaged
+
+    static_assert((o1 != T(1)), "");
+    static_assert(!(o2 != T(1)), "");
+    static_assert((o3 != T(1)), "");
+    static_assert(!(o3 != T(2)), "");
+    static_assert(!(o3 != val), "");
+
+    static_assert((T(1) != o1), "");
+    static_assert(!(T(1) != o2), "");
+    static_assert((T(1) != o3), "");
+    static_assert(!(T(2) != o3), "");
+    static_assert(!(val != o3), "");
+  }
+  {
+    using O = optional<int>;
+    constexpr O o1(42);
+    static_assert(o1 != 101l, "");
+    static_assert(!(42l != o1), "");
+  }
+  {
+    using O = optional<const int>;
+    constexpr O o1(42);
+    static_assert(o1 != 101, "");
+    static_assert(!(42 != o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.hash/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.hash/enabled_hash.pass.cpp
new file mode 100644
index 0000000..be11fec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.hash/enabled_hash.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// Test that <optional> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <functional>
+#include <optional>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  {
+
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.hash/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.hash/hash.pass.cpp
new file mode 100644
index 0000000..bb8a319
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.hash/hash.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> struct hash<optional<T>>;
+
+#include <optional>
+#include <string>
+#include <memory>
+#include <cassert>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+struct A {};
+struct B {};
+
+namespace std {
+
+template <>
+struct hash<B> {
+  size_t operator()(B const&) noexcept(false) { return 0; }
+};
+
+}
+
+int main(int, char**)
+{
+    using std::optional;
+    const std::size_t nullopt_hash =
+        std::hash<optional<double>>{}(optional<double>{});
+
+
+    {
+        optional<B> opt;
+        ASSERT_NOT_NOEXCEPT(std::hash<optional<B>>()(opt));
+        ASSERT_NOT_NOEXCEPT(std::hash<optional<const B>>()(opt));
+    }
+
+    {
+        typedef int T;
+        optional<T> opt;
+        assert(std::hash<optional<T>>{}(opt) == nullopt_hash);
+        opt = 2;
+        assert(std::hash<optional<T>>{}(opt) == std::hash<T>{}(*opt));
+    }
+    {
+        typedef std::string T;
+        optional<T> opt;
+        assert(std::hash<optional<T>>{}(opt) == nullopt_hash);
+        opt = std::string("123");
+        assert(std::hash<optional<T>>{}(opt) == std::hash<T>{}(*opt));
+    }
+    {
+        typedef std::unique_ptr<int> T;
+        optional<T> opt;
+        assert(std::hash<optional<T>>{}(opt) == nullopt_hash);
+        opt = std::unique_ptr<int>(new int(3));
+        assert(std::hash<optional<T>>{}(opt) == std::hash<T>{}(*opt));
+    }
+    {
+      test_hash_enabled_for_type<std::optional<int> >();
+      test_hash_enabled_for_type<std::optional<int*> >();
+      test_hash_enabled_for_type<std::optional<const int> >();
+      test_hash_enabled_for_type<std::optional<int* const> >();
+
+      test_hash_disabled_for_type<std::optional<A>>();
+      test_hash_disabled_for_type<std::optional<const A>>();
+
+      test_hash_enabled_for_type<std::optional<B>>();
+      test_hash_enabled_for_type<std::optional<const B>>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/and_then.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/and_then.pass.cpp
new file mode 100644
index 0000000..a627abd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/and_then.pass.cpp
@@ -0,0 +1,267 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// template<class F> constexpr auto and_then(F&&) &;
+// template<class F> constexpr auto and_then(F&&) &&;
+// template<class F> constexpr auto and_then(F&&) const&;
+// template<class F> constexpr auto and_then(F&&) const&&;
+
+#include <cassert>
+#include <optional>
+
+#include "test_macros.h"
+
+struct LVal {
+  constexpr std::optional<int> operator()(int&) { return 1; }
+  std::optional<int> operator()(const int&) = delete;
+  std::optional<int> operator()(int&&) = delete;
+  std::optional<int> operator()(const int&&) = delete;
+};
+
+struct CLVal {
+  std::optional<int> operator()(int&) = delete;
+  constexpr std::optional<int> operator()(const int&) { return 1; }
+  std::optional<int> operator()(int&&) = delete;
+  std::optional<int> operator()(const int&&) = delete;
+};
+
+struct RVal {
+  std::optional<int> operator()(int&) = delete;
+  std::optional<int> operator()(const int&) = delete;
+  constexpr std::optional<int> operator()(int&&) { return 1; }
+  std::optional<int> operator()(const int&&) = delete;
+};
+
+struct CRVal {
+  std::optional<int> operator()(int&) = delete;
+  std::optional<int> operator()(const int&) = delete;
+  std::optional<int> operator()(int&&) = delete;
+  constexpr std::optional<int> operator()(const int&&) { return 1; }
+};
+
+struct RefQual {
+  constexpr std::optional<int> operator()(int) & { return 1; }
+  std::optional<int> operator()(int) const& = delete;
+  std::optional<int> operator()(int) && = delete;
+  std::optional<int> operator()(int) const&& = delete;
+};
+
+struct CRefQual {
+  std::optional<int> operator()(int) & = delete;
+  constexpr std::optional<int> operator()(int) const& { return 1; }
+  std::optional<int> operator()(int) && = delete;
+  std::optional<int> operator()(int) const&& = delete;
+};
+
+struct RVRefQual {
+  std::optional<int> operator()(int) & = delete;
+  std::optional<int> operator()(int) const& = delete;
+  constexpr std::optional<int> operator()(int) && { return 1; }
+  std::optional<int> operator()(int) const&& = delete;
+};
+
+struct RVCRefQual {
+  std::optional<int> operator()(int) & = delete;
+  std::optional<int> operator()(int) const& = delete;
+  std::optional<int> operator()(int) && = delete;
+  constexpr std::optional<int> operator()(int) const&& { return 1; }
+};
+
+struct NOLVal {
+  constexpr std::optional<int> operator()(int&) { return std::nullopt; }
+  std::optional<int> operator()(const int&) = delete;
+  std::optional<int> operator()(int&&) = delete;
+  std::optional<int> operator()(const int&&) = delete;
+};
+
+struct NOCLVal {
+  std::optional<int> operator()(int&) = delete;
+  constexpr std::optional<int> operator()(const int&) { return std::nullopt; }
+  std::optional<int> operator()(int&&) = delete;
+  std::optional<int> operator()(const int&&) = delete;
+};
+
+struct NORVal {
+  std::optional<int> operator()(int&) = delete;
+  std::optional<int> operator()(const int&) = delete;
+  constexpr std::optional<int> operator()(int&&) { return std::nullopt; }
+  std::optional<int> operator()(const int&&) = delete;
+};
+
+struct NOCRVal {
+  std::optional<int> operator()(int&) = delete;
+  std::optional<int> operator()(const int&) = delete;
+  std::optional<int> operator()(int&&) = delete;
+  constexpr std::optional<int> operator()(const int&&) { return std::nullopt; }
+};
+
+struct NORefQual {
+  constexpr std::optional<int> operator()(int) & { return std::nullopt; }
+  std::optional<int> operator()(int) const& = delete;
+  std::optional<int> operator()(int) && = delete;
+  std::optional<int> operator()(int) const&& = delete;
+};
+
+struct NOCRefQual {
+  std::optional<int> operator()(int) & = delete;
+  constexpr std::optional<int> operator()(int) const& { return std::nullopt; }
+  std::optional<int> operator()(int) && = delete;
+  std::optional<int> operator()(int) const&& = delete;
+};
+
+struct NORVRefQual {
+  std::optional<int> operator()(int) & = delete;
+  std::optional<int> operator()(int) const& = delete;
+  constexpr std::optional<int> operator()(int) && { return std::nullopt; }
+  std::optional<int> operator()(int) const&& = delete;
+};
+
+struct NORVCRefQual {
+  std::optional<int> operator()(int) & = delete;
+  std::optional<int> operator()(int) const& = delete;
+  std::optional<int> operator()(int) && = delete;
+  constexpr std::optional<int> operator()(int) const&& { return std::nullopt; }
+};
+
+struct NoCopy {
+  NoCopy() = default;
+  NoCopy(const NoCopy&) { assert(false); }
+  std::optional<int> operator()(const NoCopy&&) { return 1; }
+};
+
+struct NonConst {
+  std::optional<int> non_const() { return 1; }
+};
+
+constexpr void test_val_types() {
+  // Test & overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      assert(i.and_then(LVal{}) == 1);
+      assert(i.and_then(NOLVal{}) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(i.and_then(LVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      RefQual l{};
+      assert(i.and_then(l) == 1);
+      NORefQual nl{};
+      assert(i.and_then(nl) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(i.and_then(l)), std::optional<int>);
+    }
+  }
+
+  // Test const& overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      assert(i.and_then(CLVal{}) == 1);
+      assert(i.and_then(NOCLVal{}) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(i.and_then(CLVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      const CRefQual l{};
+      assert(i.and_then(l) == 1);
+      const NOCRefQual nl{};
+      assert(i.and_then(nl) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(i.and_then(l)), std::optional<int>);
+    }
+  }
+
+  // Test && overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      assert(std::move(i).and_then(RVal{}) == 1);
+      assert(std::move(i).and_then(NORVal{}) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(std::move(i).and_then(RVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      assert(i.and_then(RVRefQual{}) == 1);
+      assert(i.and_then(NORVRefQual{}) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(i.and_then(RVRefQual{})), std::optional<int>);
+    }
+  }
+
+  // Test const&& overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      assert(std::move(i).and_then(CRVal{}) == 1);
+      assert(std::move(i).and_then(NOCRVal{}) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(std::move(i).and_then(CRVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      const RVCRefQual l{};
+      assert(i.and_then(std::move(l)) == 1);
+      const NORVCRefQual nl{};
+      assert(i.and_then(std::move(nl)) == std::nullopt);
+      ASSERT_SAME_TYPE(decltype(i.and_then(std::move(l))), std::optional<int>);
+    }
+  }
+}
+
+// check that the lambda body is not instantiated during overload resolution
+constexpr void test_sfinae() {
+  std::optional<NonConst> opt{};
+  auto l = [](auto&& x) { return x.non_const(); };
+  opt.and_then(l);
+  std::move(opt).and_then(l);
+}
+
+constexpr bool test() {
+  test_val_types();
+  std::optional<int> opt{};
+  const auto& copt = opt;
+
+  const auto never_called = [](int) {
+    assert(false);
+    return std::optional<int>{};
+  };
+
+  opt.and_then(never_called);
+  std::move(opt).and_then(never_called);
+  copt.and_then(never_called);
+  std::move(copt).and_then(never_called);
+
+  std::optional<NoCopy> nc;
+  const auto& cnc = nc;
+  std::move(cnc).and_then(NoCopy{});
+  std::move(nc).and_then(NoCopy{});
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/or_else.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/or_else.pass.cpp
new file mode 100644
index 0000000..ccc94ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/or_else.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+// <optional>
+
+// template<class F> constexpr optional or_else(F&&) &&;
+// template<class F> constexpr optional or_else(F&&) const&;
+
+#include "MoveOnly.h"
+
+#include <cassert>
+#include <optional>
+
+struct NonMovable {
+  NonMovable() = default;
+  NonMovable(NonMovable&&) = delete;
+};
+
+template <class Opt, class F>
+concept has_or_else = requires(Opt&& opt, F&& f) {
+  {std::forward<Opt>(opt).or_else(std::forward<F>(f))};
+};
+
+template <class T>
+std::optional<T> return_optional() {}
+
+static_assert(has_or_else<std::optional<int>&, decltype(return_optional<int>)>);
+static_assert(has_or_else<std::optional<int>&&, decltype(return_optional<int>)>);
+static_assert(!has_or_else<std::optional<MoveOnly>&, decltype(return_optional<MoveOnly>)>);
+static_assert(has_or_else<std::optional<MoveOnly>&&, decltype(return_optional<MoveOnly>)>);
+static_assert(!has_or_else<std::optional<NonMovable>&, decltype(return_optional<NonMovable>)>);
+static_assert(!has_or_else<std::optional<NonMovable>&&, decltype(return_optional<NonMovable>)>);
+
+std::optional<int> take_int(int) { return 0; }
+void take_int_return_void(int) {}
+
+static_assert(!has_or_else<std::optional<int>, decltype(take_int)>);
+static_assert(!has_or_else<std::optional<int>, decltype(take_int_return_void)>);
+static_assert(!has_or_else<std::optional<int>, int>);
+
+constexpr bool test() {
+  {
+    std::optional<int> opt;
+    assert(opt.or_else([] { return std::optional<int>{0}; }) == 0);
+    opt = 1;
+    opt.or_else([] {
+      assert(false);
+      return std::optional<int>{};
+    });
+  }
+  {
+    std::optional<MoveOnly> opt;
+    opt = std::move(opt).or_else([] { return std::optional<MoveOnly>{MoveOnly{}}; });
+    std::move(opt).or_else([] {
+      assert(false);
+      return std::optional<MoveOnly>{};
+    });
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/transform.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/transform.pass.cpp
new file mode 100644
index 0000000..11783af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.monadic/transform.pass.cpp
@@ -0,0 +1,210 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// template<class F> constexpr auto transform(F&&) &;
+// template<class F> constexpr auto transform(F&&) &&;
+// template<class F> constexpr auto transform(F&&) const&;
+// template<class F> constexpr auto transform(F&&) const&&;
+
+#include "test_macros.h"
+#include <cassert>
+#include <optional>
+#include <type_traits>
+
+struct LVal {
+  constexpr int operator()(int&) { return 1; }
+  int operator()(const int&) = delete;
+  int operator()(int&&) = delete;
+  int operator()(const int&&) = delete;
+};
+
+struct CLVal {
+  int operator()(int&) = delete;
+  constexpr int operator()(const int&) { return 1; }
+  int operator()(int&&) = delete;
+  int operator()(const int&&) = delete;
+};
+
+struct RVal {
+  int operator()(int&) = delete;
+  int operator()(const int&) = delete;
+  constexpr int operator()(int&&) { return 1; }
+  int operator()(const int&&) = delete;
+};
+
+struct CRVal {
+  int operator()(int&) = delete;
+  int operator()(const int&) = delete;
+  int operator()(int&&) = delete;
+  constexpr int operator()(const int&&) { return 1; }
+};
+
+struct RefQual {
+  constexpr int operator()(int) & { return 1; }
+  int operator()(int) const& = delete;
+  int operator()(int) && = delete;
+  int operator()(int) const&& = delete;
+};
+
+struct CRefQual {
+  int operator()(int) & = delete;
+  constexpr int operator()(int) const& { return 1; }
+  int operator()(int) && = delete;
+  int operator()(int) const&& = delete;
+};
+
+struct RVRefQual {
+  int operator()(int) & = delete;
+  int operator()(int) const& = delete;
+  constexpr int operator()(int) && { return 1; }
+  int operator()(int) const&& = delete;
+};
+
+struct RVCRefQual {
+  int operator()(int) & = delete;
+  int operator()(int) const& = delete;
+  int operator()(int) && = delete;
+  constexpr int operator()(int) const&& { return 1; }
+};
+
+struct NoCopy {
+  NoCopy() = default;
+  NoCopy(const NoCopy&) { assert(false); }
+  int operator()(const NoCopy&&) { return 1; }
+};
+
+struct NoMove {
+  NoMove() = default;
+  NoMove(NoMove&&) = delete;
+  NoMove operator()(const NoCopy&&) { return NoMove{}; }
+};
+
+constexpr void test_val_types() {
+  // Test & overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      assert(i.transform(LVal{}) == 1);
+      ASSERT_SAME_TYPE(decltype(i.transform(LVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      RefQual l{};
+      assert(i.transform(l) == 1);
+      ASSERT_SAME_TYPE(decltype(i.transform(l)), std::optional<int>);
+    }
+  }
+
+  // Test const& overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      assert(i.transform(CLVal{}) == 1);
+      ASSERT_SAME_TYPE(decltype(i.transform(CLVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      const CRefQual l{};
+      assert(i.transform(l) == 1);
+      ASSERT_SAME_TYPE(decltype(i.transform(l)), std::optional<int>);
+    }
+  }
+
+  // Test && overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      assert(std::move(i).transform(RVal{}) == 1);
+      ASSERT_SAME_TYPE(decltype(std::move(i).transform(RVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      std::optional<int> i{0};
+      assert(i.transform(RVRefQual{}) == 1);
+      ASSERT_SAME_TYPE(decltype(i.transform(RVRefQual{})), std::optional<int>);
+    }
+  }
+
+  // Test const&& overload
+  {
+    // Without & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      assert(std::move(i).transform(CRVal{}) == 1);
+      ASSERT_SAME_TYPE(decltype(std::move(i).transform(CRVal{})), std::optional<int>);
+    }
+
+    //With & qualifier on F's operator()
+    {
+      const std::optional<int> i{0};
+      const RVCRefQual l{};
+      assert(i.transform(std::move(l)) == 1);
+      ASSERT_SAME_TYPE(decltype(i.transform(std::move(l))), std::optional<int>);
+    }
+  }
+}
+
+struct NonConst {
+  int non_const() { return 1; }
+};
+
+// check that the lambda body is not instantiated during overload resolution
+constexpr void test_sfinae() {
+  std::optional<NonConst> opt{};
+  auto l = [](auto&& x) { return x.non_const(); };
+  opt.transform(l);
+  std::move(opt).transform(l);
+}
+
+constexpr bool test() {
+  test_sfinae();
+  test_val_types();
+  std::optional<int> opt;
+  const auto& copt = opt;
+
+  const auto never_called = [](int) {
+    assert(false);
+    return 0;
+  };
+
+  opt.transform(never_called);
+  std::move(opt).transform(never_called);
+  copt.transform(never_called);
+  std::move(copt).transform(never_called);
+
+  std::optional<NoCopy> nc;
+  const auto& cnc = nc;
+  std::move(nc).transform(NoCopy{});
+  std::move(cnc).transform(NoCopy{});
+
+  std::move(nc).transform(NoMove{});
+  std::move(cnc).transform(NoMove{});
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/equal.pass.cpp
new file mode 100644
index 0000000..f3c8b94
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/equal.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> constexpr bool operator==(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator==(nullopt_t, const optional<T>& x) noexcept;
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    {
+    typedef int T;
+    typedef optional<T> O;
+
+    constexpr O o1;     // disengaged
+    constexpr O o2{1};  // engaged
+
+    static_assert (  (nullopt == o1), "" );
+    static_assert ( !(nullopt == o2), "" );
+    static_assert (  (o1 == nullopt), "" );
+    static_assert ( !(o2 == nullopt), "" );
+
+    static_assert (noexcept(nullopt == o1), "");
+    static_assert (noexcept(o1 == nullopt), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/greater.pass.cpp
new file mode 100644
index 0000000..bbde4ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/greater.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> constexpr bool operator>(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator>(nullopt_t, const optional<T>& x) noexcept;
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    {
+    typedef int T;
+    typedef optional<T> O;
+
+    constexpr O o1;     // disengaged
+    constexpr O o2{1};  // engaged
+
+    static_assert ( !(nullopt > o1), "" );
+    static_assert ( !(nullopt > o2), "" );
+    static_assert ( !(o1 > nullopt), "" );
+    static_assert (  (o2 > nullopt), "" );
+
+    static_assert (noexcept(nullopt > o1), "");
+    static_assert (noexcept(o1 > nullopt), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/greater_equal.pass.cpp
new file mode 100644
index 0000000..d9f3507
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/greater_equal.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> constexpr bool operator>=(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator>=(nullopt_t, const optional<T>& x) noexcept;
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    {
+    typedef int T;
+    typedef optional<T> O;
+
+    constexpr O o1;     // disengaged
+    constexpr O o2{1};  // engaged
+
+    static_assert (  (nullopt >= o1), "" );
+    static_assert ( !(nullopt >= o2), "" );
+    static_assert (  (o1 >= nullopt), "" );
+    static_assert (  (o2 >= nullopt), "" );
+
+    static_assert (noexcept(nullopt >= o1), "");
+    static_assert (noexcept(o1 >= nullopt), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/less_equal.pass.cpp
new file mode 100644
index 0000000..28ad09a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/less_equal.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// template <class T> constexpr bool operator<=(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator<=(nullopt_t, const optional<T>& x) noexcept;
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    {
+    typedef int T;
+    typedef optional<T> O;
+
+    constexpr O o1;     // disengaged
+    constexpr O o2{1};  // engaged
+
+    static_assert (  (nullopt <= o1), "" );
+    static_assert (  (nullopt <= o2), "" );
+    static_assert (  (o1 <= nullopt), "" );
+    static_assert ( !(o2 <= nullopt), "" );
+
+    static_assert (noexcept(nullopt <= o1), "");
+    static_assert (noexcept(o1 <= nullopt), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/less_than.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/less_than.pass.cpp
new file mode 100644
index 0000000..190b632
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/less_than.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> constexpr bool operator<(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator<(nullopt_t, const optional<T>& x) noexcept;
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    {
+    typedef int T;
+    typedef optional<T> O;
+
+    constexpr O o1;     // disengaged
+    constexpr O o2{1};  // engaged
+
+    static_assert ( !(nullopt < o1), "" );
+    static_assert (  (nullopt < o2), "" );
+    static_assert ( !(o1 < nullopt), "" );
+    static_assert ( !(o2 < nullopt), "" );
+
+    static_assert (noexcept(nullopt < o1), "");
+    static_assert (noexcept(o1 < nullopt), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/not_equal.pass.cpp
new file mode 100644
index 0000000..3845ee2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullops/not_equal.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> constexpr bool operator!=(const optional<T>& x, nullopt_t) noexcept;
+// template <class T> constexpr bool operator!=(nullopt_t, const optional<T>& x) noexcept;
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    {
+    typedef int T;
+    typedef optional<T> O;
+
+    constexpr O o1;     // disengaged
+    constexpr O o2{1};  // engaged
+
+    static_assert ( !(nullopt != o1), "" );
+    static_assert (  (nullopt != o2), "" );
+    static_assert ( !(o1 != nullopt), "" );
+    static_assert (  (o2 != nullopt), "" );
+
+    static_assert (noexcept(nullopt != o1), "");
+    static_assert (noexcept(o1 != nullopt), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.compile.fail.cpp
new file mode 100644
index 0000000..afbdf68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.compile.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// struct nullopt_t{see below};
+// inline constexpr nullopt_t nullopt(unspecified);
+
+// [optional.nullopt]/2:
+//   Type nullopt_t shall not have a default constructor or an initializer-list
+//   constructor, and shall not be an aggregate.
+
+#include <optional>
+
+int main(int, char**)
+{
+    std::nullopt_t n = {};
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp
new file mode 100644
index 0000000..842b758
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// struct nullopt_t{see below};
+// inline constexpr nullopt_t nullopt(unspecified);
+
+// [optional.nullopt]/2:
+//   Type nullopt_t shall not have a default constructor or an initializer-list
+//   constructor, and shall not be an aggregate.
+
+#include <optional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using std::nullopt_t;
+using std::nullopt;
+
+constexpr bool test()
+{
+    nullopt_t foo{nullopt};
+    (void)foo;
+    return true;
+}
+
+int main(int, char**)
+{
+    static_assert(std::is_empty_v<nullopt_t>);
+    static_assert(!std::is_default_constructible_v<nullopt_t>);
+
+    static_assert(std::is_same_v<const nullopt_t, decltype(nullopt)>);
+    static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/assign_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/assign_value.pass.cpp
new file mode 100644
index 0000000..eaca111
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/assign_value.pass.cpp
@@ -0,0 +1,285 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U> optional<T>& operator=(U&& v);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+struct ThrowAssign {
+  static int dtor_called;
+  ThrowAssign() = default;
+  ThrowAssign(int) { TEST_THROW(42); }
+  ThrowAssign& operator=(int) {
+      TEST_THROW(42);
+  }
+  ~ThrowAssign() { ++dtor_called; }
+};
+int ThrowAssign::dtor_called = 0;
+
+template <class T, class Arg = T, bool Expect = true>
+void assert_assignable() {
+    static_assert(std::is_assignable<optional<T>&, Arg>::value == Expect, "");
+    static_assert(!std::is_assignable<const optional<T>&, Arg>::value, "");
+}
+
+struct MismatchType {
+  explicit MismatchType(int) {}
+  explicit MismatchType(char*) {}
+  explicit MismatchType(int*) = delete;
+  MismatchType& operator=(int) { return *this; }
+  MismatchType& operator=(int*) { return *this; }
+  MismatchType& operator=(char*) = delete;
+};
+
+struct FromOptionalType {
+  using Opt = std::optional<FromOptionalType>;
+  FromOptionalType() = default;
+  FromOptionalType(FromOptionalType const&) = delete;
+  template <class Dummy = void>
+  constexpr FromOptionalType(Opt&) { Dummy::BARK; }
+  template <class Dummy = void>
+  constexpr FromOptionalType& operator=(Opt&) { Dummy::BARK; return *this; }
+};
+
+void test_sfinae() {
+    using I = TestTypes::TestType;
+    using E = ExplicitTestTypes::TestType;
+    assert_assignable<int>();
+    assert_assignable<int, int&>();
+    assert_assignable<int, int const&>();
+    // Implicit test type
+    assert_assignable<I, I const&>();
+    assert_assignable<I, I&&>();
+    assert_assignable<I, int>();
+    assert_assignable<I, void*, false>();
+    // Explicit test type
+    assert_assignable<E, E const&>();
+    assert_assignable<E, E &&>();
+    assert_assignable<E, int>();
+    assert_assignable<E, void*, false>();
+    // Mismatch type
+    assert_assignable<MismatchType, int>();
+    assert_assignable<MismatchType, int*, false>();
+    assert_assignable<MismatchType, char*, false>();
+    // Type constructible from optional
+    assert_assignable<FromOptionalType, std::optional<FromOptionalType>&, false>();
+}
+
+void test_with_test_type()
+{
+    using T = TestTypes::TestType;
+    T::reset();
+    { // to empty
+        optional<T> opt;
+        opt = 3;
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(3));
+    }
+    { // to existing
+        optional<T> opt(42);
+        T::reset_constructors();
+        opt = 3;
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 1);
+        assert(T::value_assigned == 1);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(3));
+    }
+    { // test default argument
+        optional<T> opt;
+        T::reset_constructors();
+        opt = {1, 2};
+        assert(T::alive == 1);
+        assert(T::constructed == 2);
+        assert(T::value_constructed == 1);
+        assert(T::move_constructed == 1);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1, 2));
+    }
+    { // test default argument
+        optional<T> opt(42);
+        T::reset_constructors();
+        opt = {1, 2};
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::assigned == 1);
+        assert(T::move_assigned == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1, 2));
+    }
+    { // test default argument
+        optional<T> opt;
+        T::reset_constructors();
+        opt = {1};
+        assert(T::alive == 1);
+        assert(T::constructed == 2);
+        assert(T::value_constructed == 1);
+        assert(T::move_constructed == 1);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1));
+    }
+    { // test default argument
+        optional<T> opt(42);
+        T::reset_constructors();
+        opt = {};
+        assert(static_cast<bool>(opt) == false);
+        assert(T::alive == 0);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 1);
+    }
+}
+
+template <class T, class Value = int>
+void test_with_type() {
+    { // to empty
+        optional<T> opt;
+        opt = Value(3);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(3));
+    }
+    { // to existing
+        optional<T> opt(Value(42));
+        opt = Value(3);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(3));
+    }
+    { // test const
+        optional<T> opt(Value(42));
+        const T t(Value(3));
+        opt = t;
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(3));
+    }
+    { // test default argument
+        optional<T> opt;
+        opt = {Value(1)};
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1));
+    }
+    { // test default argument
+        optional<T> opt(Value(42));
+        opt = {};
+        assert(static_cast<bool>(opt) == false);
+    }
+}
+
+template <class T>
+void test_with_type_multi() {
+    test_with_type<T>();
+    { // test default argument
+        optional<T> opt;
+        opt = {1, 2};
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1, 2));
+    }
+    { // test default argument
+        optional<T> opt(42);
+        opt = {1, 2};
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1, 2));
+    }
+}
+
+void test_throws()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    using T = ThrowAssign;
+    {
+        optional<T> opt;
+        try {
+            opt = 42;
+            assert(false);
+        } catch (int) {}
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(T::dtor_called == 0);
+    {
+        T::dtor_called = 0;
+        optional<T> opt(std::in_place);
+        try {
+            opt = 42;
+            assert(false);
+        } catch (int) {}
+        assert(static_cast<bool>(opt) == true);
+        assert(T::dtor_called == 0);
+    }
+    assert(T::dtor_called == 1);
+#endif
+}
+
+enum MyEnum { Zero, One, Two, Three, FortyTwo = 42 };
+
+using Fn = void(*)();
+
+// https://llvm.org/PR38638
+template <class T>
+constexpr T pr38638(T v)
+{
+  std::optional<T> o;
+  o = v;
+  return *o + 2;
+}
+
+
+int main(int, char**)
+{
+    test_sfinae();
+    // Test with instrumented type
+    test_with_test_type();
+    // Test with various scalar types
+    test_with_type<int>();
+    test_with_type<MyEnum, MyEnum>();
+    test_with_type<int, MyEnum>();
+    test_with_type<Fn, Fn>();
+    // Test types with multi argument constructors
+    test_with_type_multi<ConstexprTestTypes::TestType>();
+    test_with_type_multi<TrivialTestTypes::TestType>();
+    // Test move only types
+    {
+        optional<std::unique_ptr<int>> opt;
+        opt = std::unique_ptr<int>(new int(3));
+        assert(static_cast<bool>(opt) == true);
+        assert(**opt == 3);
+    }
+    {
+        optional<std::unique_ptr<int>> opt(std::unique_ptr<int>(new int(2)));
+        opt = std::unique_ptr<int>(new int(3));
+        assert(static_cast<bool>(opt) == true);
+        assert(**opt == 3);
+    }
+    test_throws();
+
+    static_assert(pr38638(3) == 5, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/const_optional_U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/const_optional_U.pass.cpp
new file mode 100644
index 0000000..4751f8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/const_optional_U.pass.cpp
@@ -0,0 +1,255 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// From LWG2451:
+// template<class U>
+//   optional<T>& operator=(const optional<U>& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+struct X
+{
+    static bool throw_now;
+
+    X() = default;
+    X(int)
+    {
+        if (throw_now)
+            TEST_THROW(6);
+    }
+};
+
+bool X::throw_now = false;
+
+struct Y1
+{
+    Y1() = default;
+    Y1(const int&) {}
+    Y1& operator=(const Y1&) = delete;
+};
+
+struct Y2
+{
+    Y2() = default;
+    Y2(const int&) = delete;
+    Y2& operator=(const int&) { return *this; }
+};
+
+template <class T>
+struct AssignableFrom {
+  static int type_constructed;
+  static int type_assigned;
+static int int_constructed;
+  static int int_assigned;
+
+  static void reset() {
+      type_constructed = int_constructed = 0;
+      type_assigned = int_assigned = 0;
+  }
+
+  AssignableFrom() = default;
+
+  explicit AssignableFrom(T) { ++type_constructed; }
+  AssignableFrom& operator=(T) { ++type_assigned; return *this; }
+
+  AssignableFrom(int) { ++int_constructed; }
+  AssignableFrom& operator=(int) { ++int_assigned; return *this; }
+private:
+  AssignableFrom(AssignableFrom const&) = delete;
+  AssignableFrom& operator=(AssignableFrom const&) = delete;
+};
+
+template <class T> int AssignableFrom<T>::type_constructed = 0;
+template <class T> int AssignableFrom<T>::type_assigned = 0;
+template <class T> int AssignableFrom<T>::int_constructed = 0;
+template <class T> int AssignableFrom<T>::int_assigned = 0;
+
+
+void test_with_test_type() {
+    using T = TestTypes::TestType;
+    T::reset();
+    { // non-empty to empty
+        T::reset_constructors();
+        optional<T> opt;
+        const optional<int> other(42);
+        opt = other;
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(other) == true);
+        assert(*other == 42);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(42));
+    }
+    assert(T::alive == 0);
+    { // non-empty to non-empty
+        optional<T> opt(101);
+        const optional<int> other(42);
+        T::reset_constructors();
+        opt = other;
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 1);
+        assert(T::value_assigned == 1);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(other) == true);
+        assert(*other == 42);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(42));
+    }
+    assert(T::alive == 0);
+    { // empty to non-empty
+        optional<T> opt(101);
+        const optional<int> other;
+        T::reset_constructors();
+        opt = other;
+        assert(T::alive == 0);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(other) == false);
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(T::alive == 0);
+    { // empty to empty
+        optional<T> opt;
+        const optional<int> other;
+        T::reset_constructors();
+        opt = other;
+        assert(T::alive == 0);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(other) == false);
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(T::alive == 0);
+}
+
+void test_ambiguous_assign() {
+    using OptInt = std::optional<int>;
+    {
+        using T = AssignableFrom<OptInt const&>;
+        const OptInt a(42);
+        T::reset();
+        {
+            std::optional<T> t;
+            t = a;
+            assert(T::type_constructed == 1);
+            assert(T::type_assigned == 0);
+            assert(T::int_constructed == 0);
+            assert(T::int_assigned == 0);
+        }
+        T::reset();
+        {
+            std::optional<T> t(42);
+            t = a;
+            assert(T::type_constructed == 0);
+            assert(T::type_assigned == 1);
+            assert(T::int_constructed == 1);
+            assert(T::int_assigned == 0);
+        }
+        T::reset();
+        {
+            std::optional<T> t(42);
+            t = std::move(a);
+            assert(T::type_constructed == 0);
+            assert(T::type_assigned == 1);
+            assert(T::int_constructed == 1);
+            assert(T::int_assigned == 0);
+        }
+    }
+    {
+        using T = AssignableFrom<OptInt&>;
+        OptInt a(42);
+        T::reset();
+        {
+            std::optional<T> t;
+            t = a;
+            assert(T::type_constructed == 1);
+            assert(T::type_assigned == 0);
+            assert(T::int_constructed == 0);
+            assert(T::int_assigned == 0);
+        }
+        {
+            using Opt = std::optional<T>;
+            static_assert(!std::is_assignable_v<Opt&, OptInt const&>, "");
+        }
+    }
+}
+
+
+int main(int, char**)
+{
+    test_with_test_type();
+    test_ambiguous_assign();
+    {
+        optional<int> opt;
+        constexpr optional<short> opt2;
+        opt = opt2;
+        static_assert(static_cast<bool>(opt2) == false, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        optional<int> opt;
+        constexpr optional<short> opt2(short{2});
+        opt = opt2;
+        static_assert(static_cast<bool>(opt2) == true, "");
+        static_assert(*opt2 == 2, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+        assert(*opt == *opt2);
+    }
+    {
+        optional<int> opt(3);
+        constexpr optional<short> opt2;
+        opt = opt2;
+        static_assert(static_cast<bool>(opt2) == false, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        optional<int> opt(3);
+        constexpr optional<short> opt2(short{2});
+        opt = opt2;
+        static_assert(static_cast<bool>(opt2) == true, "");
+        static_assert(*opt2 == 2, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+        assert(*opt == *opt2);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<X> opt;
+        optional<int> opt2(42);
+        assert(static_cast<bool>(opt2) == true);
+        try
+        {
+            X::throw_now = true;
+            opt = opt2;
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+            assert(static_cast<bool>(opt) == false);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/copy.pass.cpp
new file mode 100644
index 0000000..9753fdb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/copy.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr optional<T>& operator=(const optional<T>& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+struct X
+{
+    static bool throw_now;
+
+    X() = default;
+    X(const X&)
+    {
+        if (throw_now)
+            TEST_THROW(6);
+    }
+    X& operator=(X const&) = default;
+};
+
+bool X::throw_now = false;
+
+template <class Tp>
+constexpr bool assign_empty(optional<Tp>&& lhs) {
+    const optional<Tp> rhs;
+    lhs = rhs;
+    return !lhs.has_value() && !rhs.has_value();
+}
+
+template <class Tp>
+constexpr bool assign_value(optional<Tp>&& lhs) {
+    const optional<Tp> rhs(101);
+    lhs = rhs;
+    return lhs.has_value() && rhs.has_value() && *lhs == *rhs;
+}
+
+int main(int, char**)
+{
+    {
+        using O = optional<int>;
+        static_assert(assign_empty(O{42}));
+        static_assert(assign_value(O{42}));
+        assert(assign_empty(O{42}));
+        assert(assign_value(O{42}));
+    }
+    {
+        using O = optional<TrivialTestTypes::TestType>;
+        static_assert(assign_empty(O{42}));
+        static_assert(assign_value(O{42}));
+        assert(assign_empty(O{42}));
+        assert(assign_value(O{42}));
+    }
+    {
+        using O = optional<TestTypes::TestType>;
+        assert(assign_empty(O{42}));
+        assert(assign_value(O{42}));
+    }
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        optional<T> opt(3);
+        const optional<T> opt2;
+        assert(T::alive == 1);
+        opt = opt2;
+        assert(T::alive == 0);
+        assert(!opt2.has_value());
+        assert(!opt.has_value());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<X> opt;
+        optional<X> opt2(X{});
+        assert(static_cast<bool>(opt2) == true);
+        try
+        {
+            X::throw_now = true;
+            opt = opt2;
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+            assert(static_cast<bool>(opt) == false);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace.pass.cpp
new file mode 100644
index 0000000..3a627a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace.pass.cpp
@@ -0,0 +1,295 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class... Args> T& optional<T>::emplace(Args&&... args);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+class X
+{
+    int i_;
+    int j_ = 0;
+public:
+    constexpr X() : i_(0) {}
+    constexpr X(int i) : i_(i) {}
+    constexpr X(int i, int j) : i_(i), j_(j) {}
+
+    friend constexpr bool operator==(const X& x, const X& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Y
+{
+public:
+    static bool dtor_called;
+    Y() = default;
+    Y(int) { TEST_THROW(6);}
+    ~Y() {dtor_called = true;}
+};
+
+bool Y::dtor_called = false;
+
+template <class T>
+constexpr bool test_one_arg() {
+    using Opt = std::optional<T>;
+    {
+        Opt opt;
+        auto & v = opt.emplace();
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(0));
+        assert(&v == &*opt);
+    }
+    {
+        Opt opt;
+        auto & v = opt.emplace(1);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1));
+        assert(&v == &*opt);
+    }
+    {
+        Opt opt(2);
+        auto & v = opt.emplace();
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(0));
+        assert(&v == &*opt);
+    }
+    {
+        Opt opt(2);
+        auto & v = opt.emplace(1);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(1));
+        assert(&v == &*opt);
+    }
+    return true;
+}
+
+
+template <class T>
+constexpr bool test_multi_arg()
+{
+    test_one_arg<T>();
+    using Opt = std::optional<T>;
+    {
+        Opt opt;
+        auto &v = opt.emplace(101, 41);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(   v == T(101, 41));
+        assert(*opt == T(101, 41));
+    }
+    {
+        Opt opt;
+        auto &v = opt.emplace({1, 2, 3, 4});
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(  v == T(4)); // T sets its value to the size of the init list
+        assert(*opt == T(4));
+    }
+    {
+        Opt opt;
+        auto &v = opt.emplace({1, 2, 3, 4, 5}, 6);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(  v == T(5)); // T sets its value to the size of the init list
+        assert(*opt == T(5)); // T sets its value to the size of the init list
+    }
+    return true;
+}
+
+template <class T>
+void test_on_test_type() {
+
+    T::reset();
+    optional<T> opt;
+    assert(T::alive == 0);
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace();
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::default_constructed == 1);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T());
+        assert(&v == &*opt);
+    }
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace();
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::default_constructed == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T());
+        assert(&v == &*opt);
+    }
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace(101);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(101));
+        assert(&v == &*opt);
+    }
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace(-10, 99);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(-10, 99));
+        assert(&v == &*opt);
+    }
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace(-10, 99);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(-10, 99));
+        assert(&v == &*opt);
+    }
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace({-10, 99, 42, 1});
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(4)); // size of the initializer list
+        assert(&v == &*opt);
+    }
+    {
+        T::reset_constructors();
+        auto &v = opt.emplace({-10, 99, 42, 1}, 42);
+        static_assert( std::is_same_v<T&, decltype(v)>, "" );
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(4)); // size of the initializer list
+        assert(&v == &*opt);
+    }
+}
+
+constexpr bool test_empty_emplace()
+{
+    optional<const int> opt;
+    auto &v = opt.emplace(42);
+    static_assert( std::is_same_v<const int&, decltype(v)>, "" );
+    assert(*opt == 42);
+    assert(   v == 42);
+    opt.emplace();
+    assert(*opt == 0);
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+        test_on_test_type<TestTypes::TestType>();
+        test_on_test_type<ExplicitTestTypes::TestType>();
+    }
+    {
+        using T = int;
+        test_one_arg<T>();
+        test_one_arg<const T>();
+#if TEST_STD_VER > 17
+        static_assert(test_one_arg<T>());
+        static_assert(test_one_arg<const T>());
+#endif
+    }
+    {
+        using T = ConstexprTestTypes::TestType;
+        test_multi_arg<T>();
+#if TEST_STD_VER > 17
+        static_assert(test_multi_arg<T>());
+#endif
+    }
+    {
+        using T = ExplicitConstexprTestTypes::TestType;
+        test_multi_arg<T>();
+#if TEST_STD_VER > 17
+        static_assert(test_multi_arg<T>());
+#endif
+    }
+    {
+        using T = TrivialTestTypes::TestType;
+        test_multi_arg<T>();
+#if TEST_STD_VER > 17
+        static_assert(test_multi_arg<T>());
+#endif
+    }
+    {
+        using T = ExplicitTrivialTestTypes::TestType;
+        test_multi_arg<T>();
+#if TEST_STD_VER > 17
+        static_assert(test_multi_arg<T>());
+#endif
+    }
+    {
+        test_empty_emplace();
+#if TEST_STD_VER > 17
+        static_assert(test_empty_emplace());
+#endif
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    Y::dtor_called = false;
+    {
+        Y y;
+        optional<Y> opt(y);
+        try
+        {
+            assert(static_cast<bool>(opt) == true);
+            assert(Y::dtor_called == false);
+            auto &v = opt.emplace(1);
+            static_assert( std::is_same_v<Y&, decltype(v)>, "" );
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+            assert(static_cast<bool>(opt) == false);
+            assert(Y::dtor_called == true);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace_initializer_list.pass.cpp
new file mode 100644
index 0000000..2323acf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace_initializer_list.pass.cpp
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U, class... Args>
+//   T& optional<T>::emplace(initializer_list<U> il, Args&&... args);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+#include <vector>
+
+#include "test_macros.h"
+
+using std::optional;
+
+class X
+{
+    int i_;
+    int j_ = 0;
+    bool* dtor_called_;
+public:
+    constexpr X(bool& dtor_called) : i_(0), dtor_called_(&dtor_called) {}
+    constexpr X(int i, bool& dtor_called) : i_(i), dtor_called_(&dtor_called) {}
+    constexpr X(std::initializer_list<int> il, bool& dtor_called)
+    : i_(il.begin()[0]), j_(il.begin()[1]), dtor_called_(&dtor_called) {}
+    TEST_CONSTEXPR_CXX20 ~X() {*dtor_called_ = true;}
+
+    friend constexpr bool operator==(const X& x, const X& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Y
+{
+    int i_;
+    int j_ = 0;
+public:
+    constexpr Y() : i_(0) {}
+    constexpr Y(int i) : i_(i) {}
+    constexpr Y(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1]) {}
+
+    friend constexpr bool operator==(const Y& x, const Y& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Z
+{
+    int i_;
+    int j_ = 0;
+public:
+    static bool dtor_called;
+    Z() : i_(0) {}
+    Z(int i) : i_(i) {}
+    Z(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1])
+        { TEST_THROW(6);}
+    ~Z() {dtor_called = true;}
+
+    friend bool operator==(const Z& x, const Z& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+bool Z::dtor_called = false;
+
+TEST_CONSTEXPR_CXX20 bool check_X()
+{
+    bool dtor_called = false;
+    X x(dtor_called);
+    optional<X> opt(x);
+    assert(dtor_called == false);
+    auto &v = opt.emplace({1, 2}, dtor_called);
+    static_assert( std::is_same_v<X&, decltype(v)>, "" );
+    assert(dtor_called);
+    assert(*opt == X({1, 2}, dtor_called));
+    assert(&v == &*opt);
+    return true;
+}
+
+TEST_CONSTEXPR_CXX20 bool check_Y()
+{
+    optional<Y> opt;
+    auto &v = opt.emplace({1, 2});
+    static_assert( std::is_same_v<Y&, decltype(v)>, "" );
+    assert(static_cast<bool>(opt) == true);
+    assert(*opt == Y({1, 2}));
+    assert(&v == &*opt);
+    return true;
+}
+
+int main(int, char**)
+{
+    {
+        check_X();
+#if TEST_STD_VER > 17
+        static_assert(check_X());
+#endif
+    }
+    {
+        optional<std::vector<int>> opt;
+        auto &v = opt.emplace({1, 2, 3}, std::allocator<int>());
+        static_assert( std::is_same_v<std::vector<int>&, decltype(v)>, "" );
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == std::vector<int>({1, 2, 3}));
+        assert(&v == &*opt);
+    }
+    {
+        check_Y();
+#if TEST_STD_VER > 17
+        static_assert(check_Y());
+#endif
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        Z z;
+        optional<Z> opt(z);
+        try
+        {
+            assert(static_cast<bool>(opt) == true);
+            assert(Z::dtor_called == false);
+            auto &v = opt.emplace({1, 2});
+            static_assert( std::is_same_v<Z&, decltype(v)>, "" );
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+            assert(static_cast<bool>(opt) == false);
+            assert(Z::dtor_called == true);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/move.pass.cpp
new file mode 100644
index 0000000..85971e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/move.pass.cpp
@@ -0,0 +1,204 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr optional<T>& operator=(optional<T>&& rhs)
+//     noexcept(is_nothrow_move_assignable<T>::value &&
+//              is_nothrow_move_constructible<T>::value);
+
+#include <optional>
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+struct X
+{
+    static bool throw_now;
+    static int alive;
+
+    X() { ++alive; }
+    X(X&&)
+    {
+        if (throw_now)
+            TEST_THROW(6);
+        ++alive;
+    }
+
+    X& operator=(X&&)
+    {
+        if (throw_now)
+            TEST_THROW(42);
+        return *this;
+    }
+
+    ~X() { assert(alive > 0); --alive; }
+};
+
+struct Y {};
+
+bool X::throw_now = false;
+int X::alive = 0;
+
+
+template <class Tp>
+constexpr bool assign_empty(optional<Tp>&& lhs) {
+    optional<Tp> rhs;
+    lhs = std::move(rhs);
+    return !lhs.has_value() && !rhs.has_value();
+}
+
+template <class Tp>
+constexpr bool assign_value(optional<Tp>&& lhs) {
+    optional<Tp> rhs(101);
+    lhs = std::move(rhs);
+    return lhs.has_value() && rhs.has_value() && *lhs == Tp{101};
+}
+
+int main(int, char**)
+{
+    {
+        static_assert(std::is_nothrow_move_assignable<optional<int>>::value, "");
+        optional<int> opt;
+        constexpr optional<int> opt2;
+        opt = std::move(opt2);
+        static_assert(static_cast<bool>(opt2) == false, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        optional<int> opt;
+        constexpr optional<int> opt2(2);
+        opt = std::move(opt2);
+        static_assert(static_cast<bool>(opt2) == true, "");
+        static_assert(*opt2 == 2, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+        assert(*opt == *opt2);
+    }
+    {
+        optional<int> opt(3);
+        constexpr optional<int> opt2;
+        opt = std::move(opt2);
+        static_assert(static_cast<bool>(opt2) == false, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        optional<T> opt(3);
+        optional<T> opt2;
+        assert(T::alive == 1);
+        opt = std::move(opt2);
+        assert(T::alive == 0);
+        assert(static_cast<bool>(opt2) == false);
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        optional<int> opt(3);
+        constexpr optional<int> opt2(2);
+        opt = std::move(opt2);
+        static_assert(static_cast<bool>(opt2) == true, "");
+        static_assert(*opt2 == 2, "");
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+        assert(*opt == *opt2);
+    }
+    {
+        using O = optional<int>;
+        static_assert(assign_empty(O{42}));
+        static_assert(assign_value(O{42}));
+        assert(assign_empty(O{42}));
+        assert(assign_value(O{42}));
+    }
+    {
+        using O = optional<TrivialTestTypes::TestType>;
+        static_assert(assign_empty(O{42}));
+        static_assert(assign_value(O{42}));
+        assert(assign_empty(O{42}));
+        assert(assign_value(O{42}));
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        static_assert(!std::is_nothrow_move_assignable<optional<X>>::value, "");
+        X::alive = 0;
+        X::throw_now = false;
+        optional<X> opt;
+        optional<X> opt2(X{});
+        assert(X::alive == 1);
+        assert(static_cast<bool>(opt2) == true);
+        try
+        {
+            X::throw_now = true;
+            opt = std::move(opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+            assert(static_cast<bool>(opt) == false);
+        }
+        assert(X::alive == 1);
+    }
+    assert(X::alive == 0);
+    {
+        static_assert(!std::is_nothrow_move_assignable<optional<X>>::value, "");
+        X::throw_now = false;
+        optional<X> opt(X{});
+        optional<X> opt2(X{});
+        assert(X::alive == 2);
+        assert(static_cast<bool>(opt2) == true);
+        try
+        {
+            X::throw_now = true;
+            opt = std::move(opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 42);
+            assert(static_cast<bool>(opt) == true);
+        }
+        assert(X::alive == 2);
+    }
+    assert(X::alive == 0);
+#endif // TEST_HAS_NO_EXCEPTIONS
+    {
+        static_assert(std::is_nothrow_move_assignable<optional<Y>>::value, "");
+    }
+    {
+        struct ThrowsMove {
+            ThrowsMove() noexcept {}
+            ThrowsMove(ThrowsMove const&) noexcept {}
+            ThrowsMove(ThrowsMove &&) noexcept(false) {}
+            ThrowsMove& operator=(ThrowsMove const&) noexcept { return *this; }
+            ThrowsMove& operator=(ThrowsMove &&) noexcept { return *this; }
+        };
+        static_assert(!std::is_nothrow_move_assignable<optional<ThrowsMove>>::value, "");
+        struct ThrowsMoveAssign {
+            ThrowsMoveAssign() noexcept {}
+            ThrowsMoveAssign(ThrowsMoveAssign const&) noexcept {}
+            ThrowsMoveAssign(ThrowsMoveAssign &&) noexcept {}
+            ThrowsMoveAssign& operator=(ThrowsMoveAssign const&) noexcept { return *this; }
+            ThrowsMoveAssign& operator=(ThrowsMoveAssign &&) noexcept(false) { return *this; }
+        };
+        static_assert(!std::is_nothrow_move_assignable<optional<ThrowsMoveAssign>>::value, "");
+        struct NoThrowMove {
+            NoThrowMove() noexcept(false) {}
+            NoThrowMove(NoThrowMove const&) noexcept(false) {}
+            NoThrowMove(NoThrowMove &&) noexcept {}
+            NoThrowMove& operator=(NoThrowMove const&) noexcept { return *this; }
+            NoThrowMove& operator=(NoThrowMove&&) noexcept { return *this; }
+        };
+        static_assert(std::is_nothrow_move_assignable<optional<NoThrowMove>>::value, "");
+    }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/nullopt_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/nullopt_t.pass.cpp
new file mode 100644
index 0000000..9d0843b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/nullopt_t.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// optional<T>& operator=(nullopt_t) noexcept;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+using std::nullopt_t;
+using std::nullopt;
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    enum class State { inactive, constructed, destroyed };
+    State state = State::inactive;
+
+    struct StateTracker {
+      TEST_CONSTEXPR_CXX20 StateTracker(State& s)
+      : state_(&s)
+      {
+        s = State::constructed;
+      }
+      TEST_CONSTEXPR_CXX20 ~StateTracker() { *state_ = State::destroyed; }
+
+      State* state_;
+    };
+    {
+        optional<int> opt;
+        static_assert(noexcept(opt = nullopt) == true, "");
+        opt = nullopt;
+        assert(static_cast<bool>(opt) == false);
+    }
+    {
+        optional<int> opt(3);
+        opt = nullopt;
+        assert(static_cast<bool>(opt) == false);
+    }
+    {
+        optional<StateTracker> opt;
+        opt = nullopt;
+        assert(state == State::inactive);
+        assert(static_cast<bool>(opt) == false);
+    }
+    {
+        optional<StateTracker> opt(state);
+        assert(state == State::constructed);
+        opt = nullopt;
+        assert(state == State::destroyed);
+        assert(static_cast<bool>(opt) == false);
+    }
+    return true;
+}
+
+
+int main(int, char**)
+{
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    test();
+    using TT = TestTypes::TestType;
+    TT::reset();
+    {
+        optional<TT> opt;
+        static_assert(noexcept(opt = nullopt) == true, "");
+        assert(TT::destroyed == 0);
+        opt = nullopt;
+        assert(TT::constructed == 0);
+        assert(TT::alive == 0);
+        assert(TT::destroyed == 0);
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(TT::alive == 0);
+    assert(TT::destroyed == 0);
+    TT::reset();
+    {
+        optional<TT> opt(42);
+        assert(TT::destroyed == 0);
+        TT::reset_constructors();
+        opt = nullopt;
+        assert(TT::constructed == 0);
+        assert(TT::alive == 0);
+        assert(TT::destroyed == 1);
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(TT::alive == 0);
+    assert(TT::destroyed == 1);
+    TT::reset();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/optional_U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/optional_U.pass.cpp
new file mode 100644
index 0000000..cc1b171
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.assign/optional_U.pass.cpp
@@ -0,0 +1,338 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// From LWG2451:
+// template <class U>
+// optional<T>& operator=(optional<U>&& rhs);
+
+#include <optional>
+
+#include <array>
+#include <cassert>
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+struct X
+{
+    static bool throw_now;
+
+    X() = default;
+    X(int &&)
+    {
+        if (throw_now)
+            TEST_THROW(6);
+    }
+};
+
+bool X::throw_now = false;
+
+struct Y1
+{
+    Y1() = default;
+    Y1(const int&) {}
+    Y1& operator=(const Y1&) = delete;
+};
+
+struct Y2
+{
+    Y2() = default;
+    Y2(const int&) = delete;
+    Y2& operator=(const int&) { return *this; }
+};
+
+struct B { virtual ~B() = default; };
+class D : public B {};
+
+
+template <class T>
+struct AssignableFrom {
+  static int type_constructed;
+  static int type_assigned;
+static int int_constructed;
+  static int int_assigned;
+
+  static void reset() {
+      type_constructed = int_constructed = 0;
+      type_assigned = int_assigned = 0;
+  }
+
+  AssignableFrom() = default;
+
+  explicit AssignableFrom(T) { ++type_constructed; }
+  AssignableFrom& operator=(T) { ++type_assigned; return *this; }
+
+  AssignableFrom(int) { ++int_constructed; }
+  AssignableFrom& operator=(int) { ++int_assigned; return *this; }
+private:
+  AssignableFrom(AssignableFrom const&) = delete;
+  AssignableFrom& operator=(AssignableFrom const&) = delete;
+};
+
+template <class T> int AssignableFrom<T>::type_constructed = 0;
+template <class T> int AssignableFrom<T>::type_assigned = 0;
+template <class T> int AssignableFrom<T>::int_constructed = 0;
+template <class T> int AssignableFrom<T>::int_assigned = 0;
+
+void test_with_test_type() {
+    using T = TestTypes::TestType;
+    T::reset();
+    { // non-empty to empty
+        T::reset_constructors();
+        optional<T> opt;
+        optional<int> other(42);
+        opt = std::move(other);
+        assert(T::alive == 1);
+        assert(T::constructed == 1);
+        assert(T::value_constructed == 1);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(other) == true);
+        assert(*other == 42);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(42));
+    }
+    assert(T::alive == 0);
+    { // non-empty to non-empty
+        optional<T> opt(101);
+        optional<int> other(42);
+        T::reset_constructors();
+        opt = std::move(other);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 1);
+        assert(T::value_assigned == 1);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(other) == true);
+        assert(*other == 42);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == T(42));
+    }
+    assert(T::alive == 0);
+    { // empty to non-empty
+        optional<T> opt(101);
+        optional<int> other;
+        T::reset_constructors();
+        opt = std::move(other);
+        assert(T::alive == 0);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 1);
+        assert(static_cast<bool>(other) == false);
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(T::alive == 0);
+    { // empty to empty
+        optional<T> opt;
+        optional<int> other;
+        T::reset_constructors();
+        opt = std::move(other);
+        assert(T::alive == 0);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+        assert(static_cast<bool>(other) == false);
+        assert(static_cast<bool>(opt) == false);
+    }
+    assert(T::alive == 0);
+}
+
+
+void test_ambiguous_assign() {
+    using OptInt = std::optional<int>;
+    {
+        using T = AssignableFrom<OptInt&&>;
+        T::reset();
+        {
+            OptInt a(42);
+            std::optional<T> t;
+            t = std::move(a);
+            assert(T::type_constructed == 1);
+            assert(T::type_assigned == 0);
+            assert(T::int_constructed == 0);
+            assert(T::int_assigned == 0);
+        }
+        {
+            using Opt = std::optional<T>;
+            static_assert(!std::is_assignable<Opt&, const OptInt&&>::value, "");
+            static_assert(!std::is_assignable<Opt&, const OptInt&>::value, "");
+            static_assert(!std::is_assignable<Opt&, OptInt&>::value, "");
+        }
+    }
+    {
+        using T = AssignableFrom<OptInt const&&>;
+        T::reset();
+        {
+            const OptInt a(42);
+            std::optional<T> t;
+            t = std::move(a);
+            assert(T::type_constructed == 1);
+            assert(T::type_assigned == 0);
+            assert(T::int_constructed == 0);
+            assert(T::int_assigned == 0);
+        }
+        T::reset();
+        {
+            OptInt a(42);
+            std::optional<T> t;
+            t = std::move(a);
+            assert(T::type_constructed == 1);
+            assert(T::type_assigned == 0);
+            assert(T::int_constructed == 0);
+            assert(T::int_assigned == 0);
+        }
+        {
+            using Opt = std::optional<T>;
+            static_assert(std::is_assignable<Opt&, OptInt&&>::value, "");
+            static_assert(!std::is_assignable<Opt&, const OptInt&>::value, "");
+            static_assert(!std::is_assignable<Opt&, OptInt&>::value, "");
+        }
+    }
+}
+
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        optional<int> opt;
+        optional<short> opt2;
+        opt = std::move(opt2);
+        assert(static_cast<bool>(opt2) == false);
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        optional<int> opt;
+        optional<short> opt2(short{2});
+        opt = std::move(opt2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+        assert(*opt == *opt2);
+    }
+    {
+        optional<int> opt(3);
+        optional<short> opt2;
+        opt = std::move(opt2);
+        assert(static_cast<bool>(opt2) == false);
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+    }
+    {
+        optional<int> opt(3);
+        optional<short> opt2(short{2});
+        opt = std::move(opt2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
+        assert(*opt == *opt2);
+    }
+
+    enum class state_t { inactive, constructed, copy_assigned, move_assigned };
+    class StateTracker {
+    public:
+      constexpr StateTracker(state_t& s)
+      : state_(&s)
+      {
+        *state_ = state_t::constructed;
+      }
+
+      StateTracker(StateTracker&&) = default;
+      StateTracker(StateTracker const&) = default;
+
+      constexpr StateTracker& operator=(StateTracker&& other) noexcept
+      {
+        *state_ = state_t::inactive;
+        state_ = other.state_;
+        *state_ = state_t::move_assigned;
+        other.state_ = nullptr;
+        return *this;
+      }
+
+      constexpr StateTracker& operator=(StateTracker const& other) noexcept
+      {
+        *state_ = state_t::inactive;
+        state_ = other.state_;
+        *state_ = state_t::copy_assigned;
+        return *this;
+      }
+    private:
+      state_t* state_;
+    };
+    {
+      auto state = std::array{state_t::inactive, state_t::inactive};
+      auto opt1 = std::optional<StateTracker>(state[0]);
+      assert(state[0] == state_t::constructed);
+
+      auto opt2 = std::optional<StateTracker>(state[1]);
+      assert(state[1] == state_t::constructed);
+
+      opt1 = std::move(opt2);
+      assert(state[0] == state_t::inactive);
+      assert(state[1] == state_t::move_assigned);
+    }
+    {
+      auto state = std::array{state_t::inactive, state_t::inactive};
+      auto opt1 = std::optional<StateTracker>(state[0]);
+      assert(state[0] == state_t::constructed);
+
+      auto opt2 = std::optional<StateTracker>(state[1]);
+      assert(state[1] == state_t::constructed);
+
+      opt1 = opt2;
+      assert(state[0] == state_t::inactive);
+      assert(state[1] == state_t::copy_assigned);
+    }
+
+    return true;
+}
+
+
+int main(int, char**)
+{
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    test_with_test_type();
+    test_ambiguous_assign();
+    test();
+    {
+        optional<std::unique_ptr<B>> opt;
+        optional<std::unique_ptr<D>> other(new D());
+        opt = std::move(other);
+        assert(static_cast<bool>(opt) == true);
+        assert(static_cast<bool>(other) == true);
+        assert(opt->get() != nullptr);
+        assert(other->get() == nullptr);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<X> opt;
+        optional<int> opt2(42);
+        assert(static_cast<bool>(opt2) == true);
+        try
+        {
+            X::throw_now = true;
+            opt = std::move(opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+            assert(static_cast<bool>(opt) == false);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/U.pass.cpp
new file mode 100644
index 0000000..e99c872
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/U.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// template <class U>
+//   constexpr EXPLICIT optional(U&& u);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+#include "test_convertible.h"
+
+
+using std::optional;
+
+struct ImplicitThrow
+{
+    constexpr ImplicitThrow(int x) { if (x != -1) TEST_THROW(6);}
+};
+
+struct ExplicitThrow
+{
+    constexpr explicit ExplicitThrow(int x) { if (x != -1) TEST_THROW(6);}
+};
+
+struct ImplicitAny {
+  template <class U>
+  constexpr ImplicitAny(U&&) {}
+};
+
+
+template <class To, class From>
+constexpr bool implicit_conversion(optional<To>&& opt, const From& v)
+{
+    using O = optional<To>;
+    static_assert(test_convertible<O, From>(), "");
+    static_assert(!test_convertible<O, void*>(), "");
+    static_assert(!test_convertible<O, From, int>(), "");
+    return opt && *opt == static_cast<To>(v);
+}
+
+template <class To, class Input, class Expect>
+constexpr bool explicit_conversion(Input&& in, const Expect& v)
+{
+    using O = optional<To>;
+    static_assert(std::is_constructible<O, Input>::value, "");
+    static_assert(!std::is_convertible<Input, O>::value, "");
+    static_assert(!std::is_constructible<O, void*>::value, "");
+    static_assert(!std::is_constructible<O, Input, int>::value, "");
+    optional<To> opt(std::forward<Input>(in));
+    return opt && *opt == static_cast<To>(v);
+}
+
+void test_implicit()
+{
+    {
+        static_assert(implicit_conversion<long long>(42, 42), "");
+    }
+    {
+        static_assert(implicit_conversion<long double>(3.14, 3.14), "");
+    }
+    {
+        int x = 42;
+        optional<void* const> o(&x);
+        assert(*o == &x);
+    }
+    {
+        using T = TrivialTestTypes::TestType;
+        static_assert(implicit_conversion<T>(42, 42), "");
+    }
+    {
+        using T = TestTypes::TestType;
+        assert(implicit_conversion<T>(3, T(3)));
+    }
+  {
+    using O = optional<ImplicitAny>;
+    static_assert(!test_convertible<O, std::in_place_t>(), "");
+    static_assert(!test_convertible<O, std::in_place_t&>(), "");
+    static_assert(!test_convertible<O, const std::in_place_t&>(), "");
+    static_assert(!test_convertible<O, std::in_place_t&&>(), "");
+    static_assert(!test_convertible<O, const std::in_place_t&&>(), "");
+
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try {
+            using T = ImplicitThrow;
+            optional<T> t = 42;
+            assert(false);
+            ((void)t);
+        } catch (int) {
+        }
+    }
+#endif
+}
+
+void test_explicit() {
+    {
+        using T = ExplicitTrivialTestTypes::TestType;
+        static_assert(explicit_conversion<T>(42, 42), "");
+    }
+    {
+        using T = ExplicitConstexprTestTypes::TestType;
+        static_assert(explicit_conversion<T>(42, 42), "");
+        static_assert(!std::is_convertible<int, T>::value, "");
+    }
+    {
+        using T = ExplicitTestTypes::TestType;
+        T::reset();
+        {
+            assert(explicit_conversion<T>(42, 42));
+            assert(T::alive == 0);
+        }
+        T::reset();
+        {
+            optional<T> t(42);
+            assert(T::alive == 1);
+            assert(T::value_constructed == 1);
+            assert(T::move_constructed == 0);
+            assert(T::copy_constructed == 0);
+            assert(t.value().value == 42);
+        }
+        assert(T::alive == 0);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try {
+            using T = ExplicitThrow;
+            optional<T> t(42);
+            assert(false);
+        } catch (int) {
+        }
+    }
+#endif
+}
+
+int main(int, char**) {
+    test_implicit();
+    test_explicit();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/const_T.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/const_T.pass.cpp
new file mode 100644
index 0000000..ddfc491
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/const_T.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// constexpr optional(const T& v);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        constexpr T t(5);
+        constexpr optional<T> opt(t);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == 5, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(const T&) {}
+        };
+
+    }
+    {
+        typedef double T;
+        constexpr T t(3);
+        constexpr optional<T> opt(t);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(const T&) {}
+        };
+
+    }
+    {
+        const int x = 42;
+        optional<const int> o(x);
+        assert(*o == x);
+    }
+    {
+        typedef TestTypes::TestType T;
+        T::reset();
+        const T t(3);
+        optional<T> opt = t;
+        assert(T::alive == 2);
+        assert(T::copy_constructed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(opt.value().value == 3);
+    }
+    {
+        typedef ExplicitTestTypes::TestType T;
+        static_assert(!std::is_convertible<T const&, optional<T>>::value, "");
+        T::reset();
+        const T t(3);
+        optional<T> opt(t);
+        assert(T::alive == 2);
+        assert(T::copy_constructed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(opt.value().value == 3);
+    }
+    {
+        typedef ConstexprTestTypes::TestType T;
+        constexpr T t(3);
+        constexpr optional<T> opt = {t};
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(opt.value().value == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(const T&) {}
+        };
+    }
+    {
+        typedef ExplicitConstexprTestTypes::TestType T;
+        static_assert(!std::is_convertible<const T&, optional<T>>::value, "");
+        constexpr T t(3);
+        constexpr optional<T> opt(t);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(opt.value().value == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(const T&) {}
+        };
+
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        struct Z {
+            Z(int) {}
+            Z(const Z&) {throw 6;}
+        };
+        typedef Z T;
+        try
+        {
+            const T t(3);
+            optional<T> opt(t);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/const_optional_U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/const_optional_U.pass.cpp
new file mode 100644
index 0000000..9505238
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/const_optional_U.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U>
+//   optional(const optional<U>& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+template <class T, class U>
+TEST_CONSTEXPR_CXX20 void
+test(const optional<U>& rhs, bool is_going_to_throw = false)
+{
+    bool rhs_engaged = static_cast<bool>(rhs);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        optional<T> lhs = rhs;
+        assert(is_going_to_throw == false);
+        assert(static_cast<bool>(lhs) == rhs_engaged);
+        if (rhs_engaged)
+            assert(*lhs == *rhs);
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#else
+    if (is_going_to_throw) return;
+    optional<T> lhs = rhs;
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(*lhs == *rhs);
+#endif
+}
+
+class X
+{
+    int i_;
+public:
+    constexpr X(int i) : i_(i) {}
+    constexpr X(const X& x) : i_(x.i_) {}
+    TEST_CONSTEXPR_CXX20 ~X() {i_ = 0;}
+    friend constexpr bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
+};
+
+class Y
+{
+    int i_;
+public:
+    constexpr Y(int i) : i_(i) {}
+
+    friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
+};
+
+int count = 0;
+
+class Z
+{
+    int i_;
+public:
+    Z(int i) : i_(i) {TEST_THROW(6);}
+
+    friend bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
+};
+
+template<class T, class U>
+constexpr bool test_all()
+{
+  {
+    optional<U> rhs;
+    test<T>(rhs);
+  }
+  {
+    optional<U> rhs(U{3});
+    test<T>(rhs);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+    test_all<int, short>();
+    test_all<X, int>();
+    test_all<Y, int>();
+#if TEST_STD_VER > 17
+    static_assert(test_all<int, short>());
+    static_assert(test_all<X, int>());
+    static_assert(test_all<Y, int>());
+#endif
+    {
+        typedef Z T;
+        typedef int U;
+        optional<U> rhs;
+        test<T>(rhs);
+    }
+    {
+        typedef Z T;
+        typedef int U;
+        optional<U> rhs(U{3});
+        test<T>(rhs, true);
+    }
+
+    static_assert(!(std::is_constructible<optional<X>, const optional<Y>&>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
new file mode 100644
index 0000000..265b4bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/copy.pass.cpp
@@ -0,0 +1,174 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr optional(const optional<T>& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+template <class T, class ...InitArgs>
+void test(InitArgs&&... args)
+{
+    const optional<T> rhs(std::forward<InitArgs>(args)...);
+    bool rhs_engaged = static_cast<bool>(rhs);
+    optional<T> lhs = rhs;
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(*lhs == *rhs);
+}
+
+template <class T, class ...InitArgs>
+constexpr bool constexpr_test(InitArgs&&... args)
+{
+    static_assert( std::is_trivially_copy_constructible_v<T>, ""); // requirement
+    const optional<T> rhs(std::forward<InitArgs>(args)...);
+    optional<T> lhs = rhs;
+    return (lhs.has_value() == rhs.has_value()) &&
+           (lhs.has_value() ? *lhs == *rhs : true);
+}
+
+void test_throwing_ctor() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    struct Z {
+        Z() : count(0) {}
+        Z(Z const& o) : count(o.count + 1)
+        { if (count == 2) throw 6; }
+        int count;
+    };
+    const Z z;
+    const optional<Z> rhs(z);
+    try
+    {
+        optional<Z> lhs(rhs);
+        assert(false);
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#endif
+}
+
+template <class T, class ...InitArgs>
+void test_ref(InitArgs&&... args)
+{
+    const optional<T> rhs(std::forward<InitArgs>(args)...);
+    bool rhs_engaged = static_cast<bool>(rhs);
+    optional<T> lhs = rhs;
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(&(*lhs) == &(*rhs));
+}
+
+
+void test_reference_extension()
+{
+#if defined(_LIBCPP_VERSION) && 0 // FIXME these extensions are currently disabled.
+    using T = TestTypes::TestType;
+    T::reset();
+    {
+        T t;
+        T::reset_constructors();
+        test_ref<T&>();
+        test_ref<T&>(t);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::destroyed == 1);
+    assert(T::alive == 0);
+    {
+        T t;
+        const T& ct = t;
+        T::reset_constructors();
+        test_ref<T const&>();
+        test_ref<T const&>(t);
+        test_ref<T const&>(ct);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::alive == 0);
+    assert(T::destroyed == 1);
+    {
+        static_assert(!std::is_copy_constructible<std::optional<T&&>>::value, "");
+        static_assert(!std::is_copy_constructible<std::optional<T const&&>>::value, "");
+    }
+#endif
+}
+
+int main(int, char**)
+{
+    test<int>();
+    test<int>(3);
+    static_assert(constexpr_test<int>(), "" );
+    static_assert(constexpr_test<int>(3), "" );
+
+    {
+        const optional<const int> o(42);
+        optional<const int> o2(o);
+        assert(*o2 == 42);
+    }
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        const optional<T> rhs;
+        assert(T::alive == 0);
+        const optional<T> lhs(rhs);
+        assert(lhs.has_value() == false);
+        assert(T::alive == 0);
+    }
+    TestTypes::TestType::reset();
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        const optional<T> rhs(42);
+        assert(T::alive == 1);
+        assert(T::value_constructed == 1);
+        assert(T::copy_constructed == 0);
+        const optional<T> lhs(rhs);
+        assert(lhs.has_value());
+        assert(T::copy_constructed == 1);
+        assert(T::alive == 2);
+    }
+    TestTypes::TestType::reset();
+    {
+        using namespace ConstexprTestTypes;
+        test<TestType>();
+        test<TestType>(42);
+    }
+    {
+        using namespace TrivialTestTypes;
+        test<TestType>();
+        test<TestType>(42);
+    }
+    {
+        test_throwing_ctor();
+    }
+    {
+        test_reference_extension();
+    }
+    {
+        constexpr std::optional<int> o1{4};
+        constexpr std::optional<int> o2 = o1;
+        static_assert( *o2 == 4, "" );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/ctor.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/ctor.fail.cpp
new file mode 100644
index 0000000..263b162
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/ctor.fail.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// T shall be an object type other than cv in_place_t or cv nullopt_t
+//   and shall satisfy the Cpp17Destructible requirements.
+// Note: array types do not satisfy the Cpp17Destructible requirements.
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonDestructible { ~NonDestructible() = delete; };
+
+int main(int, char**)
+{
+    {
+    std::optional<char &> o1;          // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a reference type is ill-formed}}
+    std::optional<NonDestructible> o2; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a non-destructible type is ill-formed}}
+    std::optional<char[20]> o3;        // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with an array type is ill-formed}}
+    }
+
+    {
+    std::optional<               std::in_place_t> o1; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with in_place_t is ill-formed}}
+    std::optional<const          std::in_place_t> o2; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with in_place_t is ill-formed}}
+    std::optional<      volatile std::in_place_t> o3; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with in_place_t is ill-formed}}
+    std::optional<const volatile std::in_place_t> o4; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with in_place_t is ill-formed}}
+    }
+
+    {
+    std::optional<               std::nullopt_t> o1; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with nullopt_t is ill-formed}}
+    std::optional<const          std::nullopt_t> o2; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with nullopt_t is ill-formed}}
+    std::optional<      volatile std::nullopt_t> o3; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with nullopt_t is ill-formed}}
+    std::optional<const volatile std::nullopt_t> o4; // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with nullopt_t is ill-formed}}
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/deduct.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/deduct.fail.cpp
new file mode 100644
index 0000000..cd4c1be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/deduct.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// template<class T>
+//   optional(T) -> optional<T>;
+
+#include <optional>
+#include <cassert>
+
+struct A {};
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+
+//  Test the implicit deduction guides
+    {
+//  optional()
+    std::optional opt;   // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'optional'}}
+    }
+
+    {
+//  optional(nullopt_t)
+    std::optional opt(std::nullopt);   // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with nullopt_t is ill-formed}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/deduct.pass.cpp
new file mode 100644
index 0000000..9bfde5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/deduct.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <optional>
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template<class T>
+//   optional(T) -> optional<T>;
+
+#include <optional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+//  Test the explicit deduction guides
+    {
+//  optional(T)
+    std::optional opt(5);
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<int>);
+    assert(static_cast<bool>(opt));
+    assert(*opt == 5);
+    }
+
+    {
+//  optional(T)
+    std::optional opt(A{});
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<A>);
+    assert(static_cast<bool>(opt));
+    }
+
+    {
+//  optional(const T&);
+    const int& source = 5;
+    std::optional opt(source);
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<int>);
+    assert(static_cast<bool>(opt));
+    assert(*opt == 5);
+    }
+
+    {
+//  optional(T*);
+    const int* source = nullptr;
+    std::optional opt(source);
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<const int*>);
+    assert(static_cast<bool>(opt));
+    assert(*opt == nullptr);
+    }
+
+    {
+//  optional(T[]);
+    int source[] = {1, 2, 3};
+    std::optional opt(source);
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<int*>);
+    assert(static_cast<bool>(opt));
+    assert((*opt)[0] == 1);
+    }
+
+//  Test the implicit deduction guides
+    {
+//  optional(optional);
+    std::optional<char> source('A');
+    std::optional opt(source);
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<char>);
+    assert(static_cast<bool>(opt) == static_cast<bool>(source));
+    assert(*opt == *source);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/default.pass.cpp
new file mode 100644
index 0000000..61a365e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/default.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr optional() noexcept;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+template <class Opt>
+void
+test_constexpr()
+{
+    static_assert(std::is_nothrow_default_constructible<Opt>::value, "");
+    static_assert(std::is_trivially_destructible<Opt>::value, "");
+    static_assert(std::is_trivially_destructible<typename Opt::value_type>::value, "");
+
+    constexpr Opt opt;
+    static_assert(static_cast<bool>(opt) == false, "");
+
+    struct test_constexpr_ctor
+        : public Opt
+    {
+        constexpr test_constexpr_ctor() {}
+    };
+}
+
+template <class Opt>
+void
+test()
+{
+    static_assert(std::is_nothrow_default_constructible<Opt>::value, "");
+    static_assert(!std::is_trivially_destructible<Opt>::value, "");
+    static_assert(!std::is_trivially_destructible<typename Opt::value_type>::value, "");
+    {
+        Opt opt;
+        assert(static_cast<bool>(opt) == false);
+    }
+    {
+        const Opt opt;
+        assert(static_cast<bool>(opt) == false);
+    }
+
+    struct test_constexpr_ctor
+        : public Opt
+    {
+        constexpr test_constexpr_ctor() {}
+    };
+}
+
+int main(int, char**)
+{
+    test_constexpr<optional<int>>();
+    test_constexpr<optional<int*>>();
+    test_constexpr<optional<ImplicitTypes::NoCtors>>();
+    test_constexpr<optional<NonTrivialTypes::NoCtors>>();
+    test_constexpr<optional<NonConstexprTypes::NoCtors>>();
+    test<optional<NonLiteralTypes::NoCtors>>();
+    // EXTENSIONS
+#if defined(_LIBCPP_VERSION) && 0 // FIXME these extensions are currently disabled.
+    test_constexpr<optional<int&>>();
+    test_constexpr<optional<const int&>>();
+    test_constexpr<optional<int&>>();
+    test_constexpr<optional<NonLiteralTypes::NoCtors&>>();
+    test_constexpr<optional<NonLiteralTypes::NoCtors&&>>();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/empty_in_place_t_does_not_clobber.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/empty_in_place_t_does_not_clobber.pass.cpp
new file mode 100644
index 0000000..594aac7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/empty_in_place_t_does_not_clobber.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr optional(in_place_t);
+
+// Test that the SFINAE "is_constructible<value_type>" isn't evaluated by the
+// in_place_t constructor with no arguments when the Clang is trying to check
+// copy constructor.
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+struct Wrapped {
+  struct Inner {
+    bool Dummy = true;
+  };
+  std::optional<Inner> inner;
+};
+
+int main(int, char**) {
+  static_assert(std::is_default_constructible<Wrapped::Inner>::value, "");
+  Wrapped w;
+  w.inner.emplace();
+  assert(w.inner.has_value());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/explicit_const_optional_U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/explicit_const_optional_U.pass.cpp
new file mode 100644
index 0000000..d8594bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/explicit_const_optional_U.pass.cpp
@@ -0,0 +1,118 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U>
+//   explicit optional(const optional<U>& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+template <class T, class U>
+TEST_CONSTEXPR_CXX20 void
+test(const optional<U>& rhs, bool is_going_to_throw = false)
+{
+    static_assert(!(std::is_convertible<const optional<U>&, optional<T>>::value), "");
+    bool rhs_engaged = static_cast<bool>(rhs);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        optional<T> lhs(rhs);
+        assert(is_going_to_throw == false);
+        assert(static_cast<bool>(lhs) == rhs_engaged);
+        if (rhs_engaged)
+            assert(*lhs == T(*rhs));
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#else
+    if (is_going_to_throw) return;
+    optional<T> lhs(rhs);
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(*lhs == T(*rhs));
+#endif
+}
+
+class X
+{
+    int i_;
+public:
+    constexpr explicit X(int i) : i_(i) {}
+    constexpr X(const X& x) : i_(x.i_) {}
+    TEST_CONSTEXPR_CXX20 ~X() {i_ = 0;}
+    friend constexpr bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
+};
+
+class Y
+{
+    int i_;
+public:
+    constexpr explicit Y(int i) : i_(i) {}
+
+    friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
+};
+
+int count = 0;
+
+class Z
+{
+    int i_;
+public:
+    explicit Z(int i) : i_(i) {TEST_THROW(6);}
+
+    friend bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
+};
+
+template<class T, class U>
+constexpr bool test_all()
+{
+  {
+    optional<U> rhs;
+    test<T>(rhs);
+  }
+  {
+    optional<U> rhs(3);
+    test<T>(rhs);
+  }
+  return true;
+}
+
+
+int main(int, char**)
+{
+    test_all<X, int>();
+    test_all<Y, int>();
+#if TEST_STD_VER > 17
+    static_assert(test_all<X, int>());
+    static_assert(test_all<Y, int>());
+#endif
+    {
+        typedef Z T;
+        typedef int U;
+        optional<U> rhs;
+        test<T>(rhs);
+    }
+    {
+        typedef Z T;
+        typedef int U;
+        optional<U> rhs(3);
+        test<T>(rhs, true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/explicit_optional_U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/explicit_optional_U.pass.cpp
new file mode 100644
index 0000000..708370a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/explicit_optional_U.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U>
+//   explicit optional(optional<U>&& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+template <class T, class U>
+TEST_CONSTEXPR_CXX20 void test(optional<U>&& rhs, bool is_going_to_throw = false)
+{
+    static_assert(!(std::is_convertible<optional<U>&&, optional<T>>::value), "");
+    bool rhs_engaged = static_cast<bool>(rhs);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        optional<T> lhs(std::move(rhs));
+        assert(is_going_to_throw == false);
+        assert(static_cast<bool>(lhs) == rhs_engaged);
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#else
+    if (is_going_to_throw) return;
+    optional<T> lhs(std::move(rhs));
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+#endif
+}
+
+class X
+{
+    int i_;
+public:
+    constexpr explicit X(int i) : i_(i) {}
+    constexpr X(X&& x) : i_(x.i_) { x.i_ = 0; }
+    TEST_CONSTEXPR_CXX20 ~X() {i_ = 0;}
+    friend constexpr bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
+};
+
+int count = 0;
+
+class Z
+{
+public:
+    explicit Z(int) { TEST_THROW(6); }
+};
+
+TEST_CONSTEXPR_CXX20 bool test()
+{
+    {
+        optional<int> rhs;
+        test<X>(std::move(rhs));
+    }
+    {
+        optional<int> rhs(3);
+        test<X>(std::move(rhs));
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+    test();
+    {
+        optional<int> rhs;
+        test<Z>(std::move(rhs));
+    }
+    {
+        optional<int> rhs(3);
+        test<Z>(std::move(rhs), true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/in_place_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/in_place_t.pass.cpp
new file mode 100644
index 0000000..65276c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/in_place_t.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// template <class... Args>
+//   constexpr explicit optional(in_place_t, Args&&... args);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::in_place_t;
+using std::in_place;
+
+class X
+{
+    int i_;
+    int j_ = 0;
+public:
+    X() : i_(0) {}
+    X(int i) : i_(i) {}
+    X(int i, int j) : i_(i), j_(j) {}
+
+    ~X() {}
+
+    friend bool operator==(const X& x, const X& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Y
+{
+    int i_;
+    int j_ = 0;
+public:
+    constexpr Y() : i_(0) {}
+    constexpr Y(int i) : i_(i) {}
+    constexpr Y(int i, int j) : i_(i), j_(j) {}
+
+    friend constexpr bool operator==(const Y& x, const Y& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Z
+{
+public:
+    Z(int) {TEST_THROW(6);}
+};
+
+
+int main(int, char**)
+{
+    {
+        constexpr optional<int> opt(in_place, 5);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == 5, "");
+
+        struct test_constexpr_ctor
+            : public optional<int>
+        {
+            constexpr test_constexpr_ctor(in_place_t, int i)
+                : optional<int>(in_place, i) {}
+        };
+
+    }
+    {
+        optional<const int> opt(in_place, 5);
+        assert(*opt == 5);
+    }
+    {
+        const optional<X> opt(in_place);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == X());
+    }
+    {
+        const optional<X> opt(in_place, 5);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == X(5));
+    }
+    {
+        const optional<X> opt(in_place, 5, 4);
+        assert(static_cast<bool>(opt) == true);
+        assert(*opt == X(5, 4));
+    }
+    {
+        constexpr optional<Y> opt(in_place);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == Y(), "");
+
+        struct test_constexpr_ctor
+            : public optional<Y>
+        {
+            constexpr test_constexpr_ctor(in_place_t)
+                : optional<Y>(in_place) {}
+        };
+
+    }
+    {
+        constexpr optional<Y> opt(in_place, 5);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == Y(5), "");
+
+        struct test_constexpr_ctor
+            : public optional<Y>
+        {
+            constexpr test_constexpr_ctor(in_place_t, int i)
+                : optional<Y>(in_place, i) {}
+        };
+
+    }
+    {
+        constexpr optional<Y> opt(in_place, 5, 4);
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == Y(5, 4), "");
+
+        struct test_constexpr_ctor
+            : public optional<Y>
+        {
+            constexpr test_constexpr_ctor(in_place_t, int i, int j)
+                : optional<Y>(in_place, i, j) {}
+        };
+
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try
+        {
+            const optional<Z> opt(in_place, 1);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/initializer_list.pass.cpp
new file mode 100644
index 0000000..6eb75b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/initializer_list.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U, class... Args>
+//     constexpr
+//     explicit optional(in_place_t, initializer_list<U> il, Args&&... args);
+
+#include <optional>
+#include <type_traits>
+#include <vector>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::in_place_t;
+using std::in_place;
+
+class X
+{
+    int i_;
+    int j_ = 0;
+public:
+    X() : i_(0) {}
+    X(int i) : i_(i) {}
+    X(int i, int j) : i_(i), j_(j) {}
+
+    ~X() {}
+
+    friend bool operator==(const X& x, const X& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Y
+{
+    int i_;
+    int j_ = 0;
+public:
+    constexpr Y() : i_(0) {}
+    constexpr Y(int i) : i_(i) {}
+    constexpr Y(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1]) {}
+
+    friend constexpr bool operator==(const Y& x, const Y& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+class Z
+{
+    int i_;
+    int j_ = 0;
+public:
+    Z() : i_(0) {}
+    Z(int i) : i_(i) {}
+    Z(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1])
+        {TEST_THROW(6);}
+
+    friend bool operator==(const Z& x, const Z& y)
+        {return x.i_ == y.i_ && x.j_ == y.j_;}
+};
+
+int main(int, char**)
+{
+    {
+        static_assert(!std::is_constructible<X, std::initializer_list<int>&>::value, "");
+        static_assert(!std::is_constructible<optional<X>, std::initializer_list<int>&>::value, "");
+    }
+    {
+        optional<std::vector<int>> opt(in_place, {3, 1});
+        assert(static_cast<bool>(opt) == true);
+        assert((*opt == std::vector<int>{3, 1}));
+        assert(opt->size() == 2);
+    }
+    {
+        optional<std::vector<int>> opt(in_place, {3, 1}, std::allocator<int>());
+        assert(static_cast<bool>(opt) == true);
+        assert((*opt == std::vector<int>{3, 1}));
+        assert(opt->size() == 2);
+    }
+    {
+        static_assert(std::is_constructible<optional<Y>, std::initializer_list<int>&>::value, "");
+        constexpr optional<Y> opt(in_place, {3, 1});
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == Y{3, 1}, "");
+
+        struct test_constexpr_ctor
+            : public optional<Y>
+        {
+            constexpr test_constexpr_ctor(in_place_t, std::initializer_list<int> i)
+                : optional<Y>(in_place, i) {}
+        };
+
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        static_assert(std::is_constructible<optional<Z>, std::initializer_list<int>&>::value, "");
+        try
+        {
+            optional<Z> opt(in_place, {3, 1});
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp
new file mode 100644
index 0000000..e4918f7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/move.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// constexpr optional(optional<T>&& rhs);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+template <class T, class ...InitArgs>
+void test(InitArgs&&... args)
+{
+    const optional<T> orig(std::forward<InitArgs>(args)...);
+    optional<T> rhs(orig);
+    bool rhs_engaged = static_cast<bool>(rhs);
+    optional<T> lhs = std::move(rhs);
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(*lhs == *orig);
+}
+
+template <class T, class ...InitArgs>
+constexpr bool constexpr_test(InitArgs&&... args)
+{
+    static_assert( std::is_trivially_copy_constructible_v<T>, ""); // requirement
+    const optional<T> orig(std::forward<InitArgs>(args)...);
+    optional<T> rhs(orig);
+    optional<T> lhs = std::move(rhs);
+    return (lhs.has_value() == orig.has_value()) &&
+           (lhs.has_value() ? *lhs == *orig : true);
+}
+
+void test_throwing_ctor() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    struct Z {
+        Z() : count(0) {}
+        Z(Z&& o) : count(o.count + 1)
+        { if (count == 2) throw 6; }
+        int count;
+    };
+    Z z;
+    optional<Z> rhs(std::move(z));
+    try
+    {
+        optional<Z> lhs(std::move(rhs));
+        assert(false);
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#endif
+}
+
+
+template <class T, class ...InitArgs>
+void test_ref(InitArgs&&... args)
+{
+    optional<T> rhs(std::forward<InitArgs>(args)...);
+    bool rhs_engaged = static_cast<bool>(rhs);
+    optional<T> lhs = std::move(rhs);
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+    if (rhs_engaged)
+        assert(&(*lhs) == &(*rhs));
+}
+
+void test_reference_extension()
+{
+#if defined(_LIBCPP_VERSION) && 0 // FIXME these extensions are currently disabled.
+    using T = TestTypes::TestType;
+    T::reset();
+    {
+        T t;
+        T::reset_constructors();
+        test_ref<T&>();
+        test_ref<T&>(t);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::destroyed == 1);
+    assert(T::alive == 0);
+    {
+        T t;
+        const T& ct = t;
+        T::reset_constructors();
+        test_ref<T const&>();
+        test_ref<T const&>(t);
+        test_ref<T const&>(ct);
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::alive == 0);
+    assert(T::destroyed == 1);
+    {
+        T t;
+        T::reset_constructors();
+        test_ref<T&&>();
+        test_ref<T&&>(std::move(t));
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::alive == 0);
+    assert(T::destroyed == 1);
+    {
+        T t;
+        const T& ct = t;
+        T::reset_constructors();
+        test_ref<T const&&>();
+        test_ref<T const&&>(std::move(t));
+        test_ref<T const&&>(std::move(ct));
+        assert(T::alive == 1);
+        assert(T::constructed == 0);
+        assert(T::assigned == 0);
+        assert(T::destroyed == 0);
+    }
+    assert(T::alive == 0);
+    assert(T::destroyed == 1);
+    {
+        static_assert(!std::is_copy_constructible<std::optional<T&&>>::value, "");
+        static_assert(!std::is_copy_constructible<std::optional<T const&&>>::value, "");
+    }
+#endif
+}
+
+
+int main(int, char**)
+{
+    test<int>();
+    test<int>(3);
+    static_assert(constexpr_test<int>(), "" );
+    static_assert(constexpr_test<int>(3), "" );
+
+    {
+        optional<const int> o(42);
+        optional<const int> o2(std::move(o));
+        assert(*o2 == 42);
+    }
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        optional<T> rhs;
+        assert(T::alive == 0);
+        const optional<T> lhs(std::move(rhs));
+        assert(lhs.has_value() == false);
+        assert(rhs.has_value() == false);
+        assert(T::alive == 0);
+    }
+    TestTypes::TestType::reset();
+    {
+        using T = TestTypes::TestType;
+        T::reset();
+        optional<T> rhs(42);
+        assert(T::alive == 1);
+        assert(T::value_constructed == 1);
+        assert(T::move_constructed == 0);
+        const optional<T> lhs(std::move(rhs));
+        assert(lhs.has_value());
+        assert(rhs.has_value());
+        assert(lhs.value().value == 42);
+        assert(rhs.value().value == -1);
+        assert(T::move_constructed == 1);
+        assert(T::alive == 2);
+    }
+    TestTypes::TestType::reset();
+    {
+        using namespace ConstexprTestTypes;
+        test<TestType>();
+        test<TestType>(42);
+    }
+    {
+        using namespace TrivialTestTypes;
+        test<TestType>();
+        test<TestType>(42);
+    }
+    {
+        test_throwing_ctor();
+    }
+    {
+        struct ThrowsMove {
+          ThrowsMove() noexcept(false) {}
+          ThrowsMove(ThrowsMove const&) noexcept(false) {}
+          ThrowsMove(ThrowsMove &&) noexcept(false) {}
+        };
+        static_assert(!std::is_nothrow_move_constructible<optional<ThrowsMove>>::value, "");
+        struct NoThrowMove {
+          NoThrowMove() noexcept(false) {}
+          NoThrowMove(NoThrowMove const&) noexcept(false) {}
+          NoThrowMove(NoThrowMove &&) noexcept(true) {}
+        };
+        static_assert(std::is_nothrow_move_constructible<optional<NoThrowMove>>::value, "");
+    }
+    {
+        test_reference_extension();
+    }
+    {
+    constexpr std::optional<int> o1{4};
+    constexpr std::optional<int> o2 = std::move(o1);
+    static_assert( *o2 == 4, "" );
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/nullopt_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/nullopt_t.pass.cpp
new file mode 100644
index 0000000..36a60f2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/nullopt_t.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr optional(nullopt_t) noexcept;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "archetypes.h"
+
+#include "test_macros.h"
+
+using std::optional;
+using std::nullopt_t;
+using std::nullopt;
+
+template <class Opt>
+void
+test_constexpr()
+{
+    static_assert(std::is_nothrow_constructible<Opt, nullopt_t&>::value, "");
+    static_assert(std::is_trivially_destructible<Opt>::value, "");
+    static_assert(std::is_trivially_destructible<typename Opt::value_type>::value, "");
+
+    constexpr Opt opt(nullopt);
+    static_assert(static_cast<bool>(opt) == false, "");
+
+    struct test_constexpr_ctor
+        : public Opt
+    {
+        constexpr test_constexpr_ctor() {}
+    };
+}
+
+template <class Opt>
+void
+test()
+{
+    static_assert(std::is_nothrow_constructible<Opt, nullopt_t&>::value, "");
+    static_assert(!std::is_trivially_destructible<Opt>::value, "");
+    static_assert(!std::is_trivially_destructible<typename Opt::value_type>::value, "");
+    {
+    Opt opt(nullopt);
+    assert(static_cast<bool>(opt) == false);
+    }
+    {
+    const Opt opt(nullopt);
+    assert(static_cast<bool>(opt) == false);
+    }
+    struct test_constexpr_ctor
+        : public Opt
+    {
+        constexpr test_constexpr_ctor() {}
+    };
+}
+
+int main(int, char**)
+{
+    test_constexpr<optional<int>>();
+    test_constexpr<optional<int*>>();
+    test_constexpr<optional<ImplicitTypes::NoCtors>>();
+    test_constexpr<optional<NonTrivialTypes::NoCtors>>();
+    test_constexpr<optional<NonConstexprTypes::NoCtors>>();
+    test<optional<NonLiteralTypes::NoCtors>>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/optional_U.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/optional_U.pass.cpp
new file mode 100644
index 0000000..14c400c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/optional_U.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U>
+//   optional(optional<U>&& rhs);
+
+#include <cassert>
+#include <memory>
+#include <optional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+using std::optional;
+
+template <class T, class U>
+TEST_CONSTEXPR_CXX20 void
+test(optional<U>&& rhs, bool is_going_to_throw = false)
+{
+    bool rhs_engaged = static_cast<bool>(rhs);
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    try
+    {
+        optional<T> lhs = std::move(rhs);
+        assert(is_going_to_throw == false);
+        assert(static_cast<bool>(lhs) == rhs_engaged);
+    }
+    catch (int i)
+    {
+        assert(i == 6);
+    }
+#else
+    if (is_going_to_throw) return;
+    optional<T> lhs = std::move(rhs);
+    assert(static_cast<bool>(lhs) == rhs_engaged);
+#endif
+}
+
+class X
+{
+    int i_;
+public:
+    TEST_CONSTEXPR_CXX20 X(int i) : i_(i) {}
+    TEST_CONSTEXPR_CXX20 X(X&& x) : i_(std::exchange(x.i_, 0)) {}
+    TEST_CONSTEXPR_CXX20 ~X() {i_ = 0;}
+    friend constexpr bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
+};
+
+struct Z
+{
+    Z(int) { TEST_THROW(6); }
+};
+
+template<class T, class U>
+TEST_CONSTEXPR_CXX20 bool test_all()
+{
+    {
+        optional<T> rhs;
+        test<U>(std::move(rhs));
+    }
+    {
+        optional<T> rhs(short{3});
+        test<U>(std::move(rhs));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test_all<short, int>();
+    test_all<int, X>();
+#if TEST_STD_VER > 17
+    static_assert(test_all<short, int>());
+    static_assert(test_all<int, X>());
+#endif
+    {
+        optional<int> rhs;
+        test<Z>(std::move(rhs));
+    }
+    {
+        optional<int> rhs(3);
+        test<Z>(std::move(rhs), true);
+    }
+
+    static_assert(!(std::is_constructible<optional<X>, optional<Z>>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/rvalue_T.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/rvalue_T.pass.cpp
new file mode 100644
index 0000000..dddd8fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.ctor/rvalue_T.pass.cpp
@@ -0,0 +1,152 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// constexpr optional(T&& v);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+
+using std::optional;
+
+
+class Z
+{
+public:
+    Z(int) {}
+    Z(Z&&) {TEST_THROW(6);}
+};
+
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        constexpr optional<T> opt(T(5));
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == 5, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(T&&) {}
+        };
+    }
+    {
+        typedef double T;
+        constexpr optional<T> opt(T(3));
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(*opt == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(T&&) {}
+        };
+    }
+    {
+        const int x = 42;
+        optional<const int> o(std::move(x));
+        assert(*o == 42);
+    }
+    {
+        typedef TestTypes::TestType T;
+        T::reset();
+        optional<T> opt = T{3};
+        assert(T::alive == 1);
+        assert(T::move_constructed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(opt.value().value == 3);
+    }
+    {
+        typedef ExplicitTestTypes::TestType T;
+        static_assert(!std::is_convertible<T&&, optional<T>>::value, "");
+        T::reset();
+        optional<T> opt(T{3});
+        assert(T::alive == 1);
+        assert(T::move_constructed == 1);
+        assert(static_cast<bool>(opt) == true);
+        assert(opt.value().value == 3);
+    }
+    {
+        typedef TestTypes::TestType T;
+        T::reset();
+        optional<T> opt = {3};
+        assert(T::alive == 1);
+        assert(T::value_constructed == 1);
+        assert(T::copy_constructed == 0);
+        assert(T::move_constructed == 0);
+        assert(static_cast<bool>(opt) == true);
+        assert(opt.value().value == 3);
+    }
+    {
+        typedef ConstexprTestTypes::TestType T;
+        constexpr optional<T> opt = {T(3)};
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(opt.value().value == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(const T&) {}
+        };
+    }
+    {
+        typedef ConstexprTestTypes::TestType T;
+        constexpr optional<T> opt = {3};
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(opt.value().value == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(const T&) {}
+        };
+    }
+    {
+        typedef ExplicitConstexprTestTypes::TestType T;
+        static_assert(!std::is_convertible<T&&, optional<T>>::value, "");
+        constexpr optional<T> opt(T{3});
+        static_assert(static_cast<bool>(opt) == true, "");
+        static_assert(opt.value().value == 3, "");
+
+        struct test_constexpr_ctor
+            : public optional<T>
+        {
+            constexpr test_constexpr_ctor(T&&) {}
+        };
+
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        try
+        {
+            Z z(3);
+            optional<Z> opt(std::move(z));
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.dtor/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.dtor/dtor.pass.cpp
new file mode 100644
index 0000000..be127a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.dtor/dtor.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// ~optional();
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct PODType {
+  int value;
+  int value2;
+};
+
+class X
+{
+public:
+    static bool dtor_called;
+    X() = default;
+    ~X() {dtor_called = true;}
+};
+
+bool X::dtor_called = false;
+
+int main(int, char**)
+{
+    {
+        typedef int T;
+        static_assert(std::is_trivially_destructible<T>::value, "");
+        static_assert(std::is_trivially_destructible<optional<T>>::value, "");
+    }
+    {
+        typedef double T;
+        static_assert(std::is_trivially_destructible<T>::value, "");
+        static_assert(std::is_trivially_destructible<optional<T>>::value, "");
+    }
+    {
+        typedef PODType T;
+        static_assert(std::is_trivially_destructible<T>::value, "");
+        static_assert(std::is_trivially_destructible<optional<T>>::value, "");
+    }
+    {
+        typedef X T;
+        static_assert(!std::is_trivially_destructible<T>::value, "");
+        static_assert(!std::is_trivially_destructible<optional<T>>::value, "");
+        {
+            X x;
+            optional<X> opt{x};
+            assert(X::dtor_called == false);
+        }
+        assert(X::dtor_called == true);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.mod/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.mod/reset.pass.cpp
new file mode 100644
index 0000000..22544c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.mod/reset.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// void reset() noexcept;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    static bool dtor_called;
+    ~X() {dtor_called = true;}
+};
+
+bool X::dtor_called = false;
+
+constexpr bool check_reset()
+{
+    {
+        optional<int> opt;
+        static_assert(noexcept(opt.reset()) == true, "");
+        opt.reset();
+        assert(static_cast<bool>(opt) == false);
+    }
+    {
+        optional<int> opt(3);
+        opt.reset();
+        assert(static_cast<bool>(opt) == false);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    check_reset();
+#if TEST_STD_VER >= 20
+    static_assert(check_reset());
+#endif
+    {
+        optional<X> opt;
+        static_assert(noexcept(opt.reset()) == true, "");
+        assert(X::dtor_called == false);
+        opt.reset();
+        assert(X::dtor_called == false);
+        assert(static_cast<bool>(opt) == false);
+    }
+    {
+        optional<X> opt(X{});
+        X::dtor_called = false;
+        opt.reset();
+        assert(X::dtor_called == true);
+        assert(static_cast<bool>(opt) == false);
+        X::dtor_called = false;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/bool.pass.cpp
new file mode 100644
index 0000000..684f18f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/bool.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr explicit optional<T>::operator bool() const noexcept;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    {
+        const optional<int> opt; ((void)opt);
+        ASSERT_NOEXCEPT(bool(opt));
+        static_assert(!std::is_convertible<optional<int>, bool>::value, "");
+    }
+    {
+        constexpr optional<int> opt;
+        static_assert(!opt, "");
+    }
+    {
+        constexpr optional<int> opt(0);
+        static_assert(opt, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference.pass.cpp
new file mode 100644
index 0000000..5b04e5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr T& optional<T>::operator*() &;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    constexpr int test() const& {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const&& {return 5;}
+    int test() && {return 6;}
+};
+
+struct Y
+{
+    constexpr int test() {return 7;}
+};
+
+constexpr int
+test()
+{
+    optional<Y> opt{Y{}};
+    return (*opt).test();
+}
+
+int main(int, char**)
+{
+    {
+        optional<X> opt; ((void)opt);
+        ASSERT_SAME_TYPE(decltype(*opt), X&);
+        LIBCPP_STATIC_ASSERT(noexcept(*opt));
+        // ASSERT_NOT_NOEXCEPT(*opt);
+        // FIXME: This assertion fails with GCC because it can see that
+        // (A) operator*() is constexpr, and
+        // (B) there is no path through the function that throws.
+        // It's arguable if this is the correct behavior for the noexcept
+        // operator.
+        // Regardless this function should still be noexcept(false) because
+        // it has a narrow contract.
+    }
+    {
+        optional<X> opt(X{});
+        assert((*opt).test() == 4);
+    }
+    static_assert(test() == 7, "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_const.pass.cpp
new file mode 100644
index 0000000..f323cd1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_const.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr const T& optional<T>::operator*() const &;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    constexpr int test() const& {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const&& {return 5;}
+    int test() && {return 6;}
+};
+
+struct Y
+{
+    int test() const {return 2;}
+};
+
+int main(int, char**)
+{
+    {
+        const optional<X> opt; ((void)opt);
+        ASSERT_SAME_TYPE(decltype(*opt), X const&);
+        LIBCPP_STATIC_ASSERT(noexcept(*opt));
+        // ASSERT_NOT_NOEXCEPT(*opt);
+        // FIXME: This assertion fails with GCC because it can see that
+        // (A) operator*() is constexpr, and
+        // (B) there is no path through the function that throws.
+        // It's arguable if this is the correct behavior for the noexcept
+        // operator.
+        // Regardless this function should still be noexcept(false) because
+        // it has a narrow contract.
+    }
+    {
+        constexpr optional<X> opt(X{});
+        static_assert((*opt).test() == 3, "");
+    }
+    {
+        constexpr optional<Y> opt(Y{});
+        assert((*opt).test() == 2);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_const_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_const_rvalue.pass.cpp
new file mode 100644
index 0000000..68591c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_const_rvalue.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr T&& optional<T>::operator*() const &&;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    constexpr int test() const& {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const&& {return 5;}
+    int test() && {return 6;}
+};
+
+struct Y
+{
+    int test() const && {return 2;}
+};
+
+int main(int, char**)
+{
+    {
+        const optional<X> opt; ((void)opt);
+        ASSERT_SAME_TYPE(decltype(*std::move(opt)), X const &&);
+        LIBCPP_STATIC_ASSERT(noexcept(*opt));
+        // ASSERT_NOT_NOEXCEPT(*std::move(opt));
+        // FIXME: This assertion fails with GCC because it can see that
+        // (A) operator*() is constexpr, and
+        // (B) there is no path through the function that throws.
+        // It's arguable if this is the correct behavior for the noexcept
+        // operator.
+        // Regardless this function should still be noexcept(false) because
+        // it has a narrow contract.
+    }
+    {
+        constexpr optional<X> opt(X{});
+        static_assert((*std::move(opt)).test() == 5, "");
+    }
+    {
+        constexpr optional<Y> opt(Y{});
+        assert((*std::move(opt)).test() == 2);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_rvalue.pass.cpp
new file mode 100644
index 0000000..67edbb9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/dereference_rvalue.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr T&& optional<T>::operator*() &&;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    constexpr int test() const& {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const&& {return 5;}
+    int test() && {return 6;}
+};
+
+struct Y
+{
+    constexpr int test() && {return 7;}
+};
+
+constexpr int
+test()
+{
+    optional<Y> opt{Y{}};
+    return (*std::move(opt)).test();
+}
+
+int main(int, char**)
+{
+    {
+        optional<X> opt; ((void)opt);
+        ASSERT_SAME_TYPE(decltype(*std::move(opt)), X&&);
+        LIBCPP_STATIC_ASSERT(noexcept(*opt));
+        // ASSERT_NOT_NOEXCEPT(*std::move(opt));
+        // FIXME: This assertion fails with GCC because it can see that
+        // (A) operator*() is constexpr, and
+        // (B) there is no path through the function that throws.
+        // It's arguable if this is the correct behavior for the noexcept
+        // operator.
+        // Regardless this function should still be noexcept(false) because
+        // it has a narrow contract.
+    }
+    {
+        optional<X> opt(X{});
+        assert((*std::move(opt)).test() == 6);
+    }
+    static_assert(test() == 7, "");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/has_value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/has_value.pass.cpp
new file mode 100644
index 0000000..6998e02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/has_value.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr bool optional<T>::has_value() const noexcept;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+    {
+        const optional<int> opt; ((void)opt);
+        ASSERT_NOEXCEPT(opt.has_value());
+        ASSERT_SAME_TYPE(decltype(opt.has_value()), bool);
+    }
+    {
+        constexpr optional<int> opt;
+        static_assert(!opt.has_value(), "");
+    }
+    {
+        constexpr optional<int> opt(0);
+        static_assert(opt.has_value(), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/op_arrow.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/op_arrow.pass.cpp
new file mode 100644
index 0000000..7cf043f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/op_arrow.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr T* optional<T>::operator->();
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    int test() noexcept {return 3;}
+};
+
+struct Y
+{
+    constexpr int test() {return 3;}
+};
+
+constexpr int
+test()
+{
+    optional<Y> opt{Y{}};
+    return opt->test();
+}
+
+int main(int, char**)
+{
+    {
+        std::optional<X> opt; ((void)opt);
+        ASSERT_SAME_TYPE(decltype(opt.operator->()), X*);
+        // ASSERT_NOT_NOEXCEPT(opt.operator->());
+        // FIXME: This assertion fails with GCC because it can see that
+        // (A) operator->() is constexpr, and
+        // (B) there is no path through the function that throws.
+        // It's arguable if this is the correct behavior for the noexcept
+        // operator.
+        // Regardless this function should still be noexcept(false) because
+        // it has a narrow contract.
+    }
+    {
+        optional<X> opt(X{});
+        assert(opt->test() == 3);
+    }
+    {
+        static_assert(test() == 3, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/op_arrow_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/op_arrow_const.pass.cpp
new file mode 100644
index 0000000..b9c1fe7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/op_arrow_const.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr const T* optional<T>::operator->() const;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X
+{
+    constexpr int test() const {return 3;}
+};
+
+struct Y
+{
+    int test() const noexcept {return 2;}
+};
+
+struct Z
+{
+    const Z* operator&() const;
+    constexpr int test() const {return 1;}
+};
+
+int main(int, char**)
+{
+    {
+        const std::optional<X> opt; ((void)opt);
+        ASSERT_SAME_TYPE(decltype(opt.operator->()), X const*);
+        // ASSERT_NOT_NOEXCEPT(opt.operator->());
+        // FIXME: This assertion fails with GCC because it can see that
+        // (A) operator->() is constexpr, and
+        // (B) there is no path through the function that throws.
+        // It's arguable if this is the correct behavior for the noexcept
+        // operator.
+        // Regardless this function should still be noexcept(false) because
+        // it has a narrow contract.
+    }
+    {
+        constexpr optional<X> opt(X{});
+        static_assert(opt->test() == 3, "");
+    }
+    {
+        constexpr optional<Y> opt(Y{});
+        assert(opt->test() == 2);
+    }
+    {
+        constexpr optional<Z> opt(Z{});
+        static_assert(opt->test() == 1, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value.pass.cpp
new file mode 100644
index 0000000..8cd9bcb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// constexpr T& optional<T>::value() &;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::bad_optional_access;
+
+struct X
+{
+    X() = default;
+    X(const X&) = delete;
+    constexpr int test() const & {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const && {return 5;}
+    int test() && {return 6;}
+};
+
+struct Y
+{
+    constexpr int test() & {return 7;}
+};
+
+constexpr int
+test()
+{
+    optional<Y> opt{Y{}};
+    return opt.value().test();
+}
+
+
+int main(int, char**)
+{
+    {
+        optional<X> opt; ((void)opt);
+        ASSERT_NOT_NOEXCEPT(opt.value());
+        ASSERT_SAME_TYPE(decltype(opt.value()), X&);
+    }
+    {
+        optional<X> opt;
+        opt.emplace();
+        assert(opt.value().test() == 4);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<X> opt;
+        try
+        {
+            (void)opt.value();
+            assert(false);
+        }
+        catch (const bad_optional_access&)
+        {
+        }
+    }
+#endif
+    static_assert(test() == 7, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const.compile.fail.cpp
new file mode 100644
index 0000000..6dad6e3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const.compile.fail.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// constexpr const T& optional<T>::value() const &;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+using std::optional;
+
+struct X
+{
+    constexpr int test() const {return 3;}
+    int test() {return 4;}
+};
+
+int main(int, char**)
+{
+    {
+        constexpr optional<X> opt;
+        static_assert(opt.value().test() == 3, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const.pass.cpp
new file mode 100644
index 0000000..103a631
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// constexpr const T& optional<T>::value() const &;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::in_place_t;
+using std::in_place;
+using std::bad_optional_access;
+
+struct X
+{
+    X() = default;
+    X(const X&) = delete;
+    constexpr int test() const & {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const && {return 5;}
+    int test() && {return 6;}
+};
+
+int main(int, char**)
+{
+    {
+        const optional<X> opt; ((void)opt);
+        ASSERT_NOT_NOEXCEPT(opt.value());
+        ASSERT_SAME_TYPE(decltype(opt.value()), X const&);
+    }
+    {
+        constexpr optional<X> opt(in_place);
+        static_assert(opt.value().test() == 3, "");
+    }
+    {
+        const optional<X> opt(in_place);
+        assert(opt.value().test() == 3);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        const optional<X> opt;
+        try
+        {
+            (void)opt.value();
+            assert(false);
+        }
+        catch (const bad_optional_access&)
+        {
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const_rvalue.pass.cpp
new file mode 100644
index 0000000..7402e98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_const_rvalue.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+
+// constexpr const T& optional<T>::value() const &&;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::in_place_t;
+using std::in_place;
+using std::bad_optional_access;
+
+struct X
+{
+    X() = default;
+    X(const X&) = delete;
+    constexpr int test() const & {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const && {return 5;}
+    int test() && {return 6;}
+};
+
+int main(int, char**)
+{
+    {
+        const optional<X> opt; ((void)opt);
+        ASSERT_NOT_NOEXCEPT(std::move(opt).value());
+        ASSERT_SAME_TYPE(decltype(std::move(opt).value()), X const&&);
+    }
+    {
+        constexpr optional<X> opt(in_place);
+        static_assert(std::move(opt).value().test() == 5, "");
+    }
+    {
+        const optional<X> opt(in_place);
+        assert(std::move(opt).value().test() == 5);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        const optional<X> opt;
+        try
+        {
+            (void)std::move(opt).value();
+            assert(false);
+        }
+        catch (const bad_optional_access&)
+        {
+        }
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_or.pass.cpp
new file mode 100644
index 0000000..4f9b699
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_or.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U> constexpr T optional<T>::value_or(U&& v) &&;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::in_place_t;
+using std::in_place;
+
+struct Y
+{
+    int i_;
+
+    constexpr Y(int i) : i_(i) {}
+};
+
+struct X
+{
+    int i_;
+
+    constexpr X(int i) : i_(i) {}
+    constexpr X(X&& x) : i_(x.i_) {x.i_ = 0;}
+    constexpr X(const Y& y) : i_(y.i_) {}
+    constexpr X(Y&& y) : i_(y.i_+1) {}
+    friend constexpr bool operator==(const X& x, const X& y)
+        {return x.i_ == y.i_;}
+};
+
+constexpr int test()
+{
+    {
+        optional<X> opt(in_place, 2);
+        Y y(3);
+        assert(std::move(opt).value_or(y) == 2);
+        assert(*opt == 0);
+    }
+    {
+        optional<X> opt(in_place, 2);
+        assert(std::move(opt).value_or(Y(3)) == 2);
+        assert(*opt == 0);
+    }
+    {
+        optional<X> opt;
+        Y y(3);
+        assert(std::move(opt).value_or(y) == 3);
+        assert(!opt);
+    }
+    {
+        optional<X> opt;
+        assert(std::move(opt).value_or(Y(3)) == 4);
+        assert(!opt);
+    }
+    return 0;
+}
+
+int main(int, char**)
+{
+    static_assert(test() == 0);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_or_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_or_const.pass.cpp
new file mode 100644
index 0000000..cf782f1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_or_const.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class U> constexpr T optional<T>::value_or(U&& v) const&;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct Y
+{
+    int i_;
+
+    constexpr Y(int i) : i_(i) {}
+};
+
+struct X
+{
+    int i_;
+
+    constexpr X(int i) : i_(i) {}
+    constexpr X(const Y& y) : i_(y.i_) {}
+    constexpr X(Y&& y) : i_(y.i_+1) {}
+    friend constexpr bool operator==(const X& x, const X& y)
+        {return x.i_ == y.i_;}
+};
+
+int main(int, char**)
+{
+    {
+        constexpr optional<X> opt(2);
+        constexpr Y y(3);
+        static_assert(opt.value_or(y) == 2, "");
+    }
+    {
+        constexpr optional<X> opt(2);
+        static_assert(opt.value_or(Y(3)) == 2, "");
+    }
+    {
+        constexpr optional<X> opt;
+        constexpr Y y(3);
+        static_assert(opt.value_or(y) == 3, "");
+    }
+    {
+        constexpr optional<X> opt;
+        static_assert(opt.value_or(Y(3)) == 4, "");
+    }
+    {
+        const optional<X> opt(2);
+        const Y y(3);
+        assert(opt.value_or(y) == 2);
+    }
+    {
+        const optional<X> opt(2);
+        assert(opt.value_or(Y(3)) == 2);
+    }
+    {
+        const optional<X> opt;
+        const Y y(3);
+        assert(opt.value_or(y) == 3);
+    }
+    {
+        const optional<X> opt;
+        assert(opt.value_or(Y(3)) == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_rvalue.pass.cpp
new file mode 100644
index 0000000..2885699
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.observe/value_rvalue.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// constexpr T& optional<T>::value() &&;
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+using std::bad_optional_access;
+
+struct X
+{
+    X() = default;
+    X(const X&) = delete;
+    constexpr int test() const & {return 3;}
+    int test() & {return 4;}
+    constexpr int test() const && {return 5;}
+    int test() && {return 6;}
+};
+
+struct Y
+{
+    constexpr int test() && {return 7;}
+};
+
+constexpr int
+test()
+{
+    optional<Y> opt{Y{}};
+    return std::move(opt).value().test();
+}
+
+int main(int, char**)
+{
+    {
+        optional<X> opt; ((void)opt);
+        ASSERT_NOT_NOEXCEPT(std::move(opt).value());
+        ASSERT_SAME_TYPE(decltype(std::move(opt).value()), X&&);
+    }
+    {
+        optional<X> opt;
+        opt.emplace();
+        assert(std::move(opt).value().test() == 6);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<X> opt;
+        try
+        {
+            (void)std::move(opt).value();
+            assert(false);
+        }
+        catch (const bad_optional_access&)
+        {
+        }
+    }
+#endif
+    static_assert(test() == 7, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.swap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.swap/swap.pass.cpp
new file mode 100644
index 0000000..e3a2fdb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional.object.swap/swap.pass.cpp
@@ -0,0 +1,328 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// void swap(optional&)
+//     noexcept(is_nothrow_move_constructible<T>::value &&
+//              is_nothrow_swappable<T>::value)
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+class X
+{
+    int i_;
+public:
+    static unsigned dtor_called;
+    X(int i) : i_(i) {}
+    X(X&& x) = default;
+    X& operator=(X&&) = default;
+    ~X() {++dtor_called;}
+
+    friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
+};
+
+unsigned X::dtor_called = 0;
+
+class Y
+{
+    int i_;
+public:
+    static unsigned dtor_called;
+    Y(int i) : i_(i) {}
+    Y(Y&&) = default;
+    ~Y() {++dtor_called;}
+
+    friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
+    friend void swap(Y& x, Y& y) {std::swap(x.i_, y.i_);}
+};
+
+unsigned Y::dtor_called = 0;
+
+class Z
+{
+    int i_;
+public:
+    Z(int i) : i_(i) {}
+    Z(Z&&) {TEST_THROW(7);}
+
+    friend constexpr bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
+    friend void swap(Z&, Z&) {TEST_THROW(6);}
+};
+
+class W
+{
+    int i_;
+public:
+    constexpr W(int i) : i_(i) {}
+
+    friend constexpr bool operator==(const W& x, const W& y) {return x.i_ == y.i_;}
+    friend TEST_CONSTEXPR_CXX20 void swap(W& x, W& y) noexcept {std::swap(x.i_, y.i_);}
+};
+
+template<class T>
+TEST_CONSTEXPR_CXX20 bool check_swap()
+{
+    {
+        optional<T> opt1;
+        optional<T> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == true);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<T> opt1(1);
+        optional<T> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == true);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<T> opt1;
+        optional<T> opt2(2);
+        static_assert(noexcept(opt1.swap(opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<T> opt1(1);
+        optional<T> opt2(2);
+        static_assert(noexcept(opt1.swap(opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    check_swap<int>();
+    check_swap<W>();
+#if TEST_STD_VER > 17
+    static_assert(check_swap<int>());
+    static_assert(check_swap<W>());
+#endif
+    {
+        optional<X> opt1;
+        optional<X> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        assert(X::dtor_called == 0);
+    }
+    {
+        optional<X> opt1(1);
+        optional<X> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        X::dtor_called = 0;
+        opt1.swap(opt2);
+        assert(X::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<X> opt1;
+        optional<X> opt2(2);
+        static_assert(noexcept(opt1.swap(opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        X::dtor_called = 0;
+        opt1.swap(opt2);
+        assert(X::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<X> opt1(1);
+        optional<X> opt2(2);
+        static_assert(noexcept(opt1.swap(opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        X::dtor_called = 0;
+        opt1.swap(opt2);
+        assert(X::dtor_called == 1);  // from inside std::swap
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<Y> opt1;
+        optional<Y> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        assert(Y::dtor_called == 0);
+    }
+    {
+        optional<Y> opt1(1);
+        optional<Y> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        Y::dtor_called = 0;
+        opt1.swap(opt2);
+        assert(Y::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<Y> opt1;
+        optional<Y> opt2(2);
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        Y::dtor_called = 0;
+        opt1.swap(opt2);
+        assert(Y::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<Y> opt1(1);
+        optional<Y> opt2(2);
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        Y::dtor_called = 0;
+        opt1.swap(opt2);
+        assert(Y::dtor_called == 0);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<Z> opt1;
+        optional<Z> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        opt1.swap(opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<Z> opt1;
+        opt1.emplace(1);
+        optional<Z> opt2;
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        try
+        {
+            opt1.swap(opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 7);
+        }
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<Z> opt1;
+        optional<Z> opt2;
+        opt2.emplace(2);
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        try
+        {
+            opt1.swap(opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 7);
+        }
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+    }
+    {
+        optional<Z> opt1;
+        opt1.emplace(1);
+        optional<Z> opt2;
+        opt2.emplace(2);
+        static_assert(noexcept(opt1.swap(opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        try
+        {
+            opt1.swap(opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+        }
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional_requires_destructible_object.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional_requires_destructible_object.fail.cpp
new file mode 100644
index 0000000..64e130c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/optional_requires_destructible_object.fail.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// T shall be an object type and shall satisfy the requirements of Destructible
+
+#include <optional>
+
+using std::optional;
+
+struct X
+{
+private:
+    ~X() {}
+};
+
+int main(int, char**)
+{
+    using std::optional;
+    {
+        // expected-error-re@optional:* 2 {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a reference type is ill-formed}}
+        optional<int&> opt1;
+        optional<int&&> opt2;
+    }
+    {
+        // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a non-destructible type is ill-formed}}
+        optional<X> opt3;
+    }
+    {
+        // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a non-object type is undefined behavior}}
+        // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a non-destructible type is ill-formed}}
+        optional<void()> opt4;
+    }
+    {
+        // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a non-object type is undefined behavior}}
+        // expected-error-re@optional:* {{{{(static_assert|static assertion)}} failed{{.*}}instantiation of optional with a non-destructible type is ill-formed}}
+        // expected-error@optional:* 1+ {{cannot form a reference to 'void'}}
+        optional<const void> opt4;
+    }
+    // FIXME these are garbage diagnostics that Clang should not produce
+    // expected-error@optional:* 0+ {{is not a base class}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/special_members.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/special_members.pass.cpp
new file mode 100644
index 0000000..e960bad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/special_members.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <optional>
+
+// Make sure we properly generate special member functions for optional<T>
+// based on the properties of T itself.
+
+#include <optional>
+#include <type_traits>
+
+#include "archetypes.h"
+
+#include "test_macros.h"
+
+
+template <class T>
+struct SpecialMemberTest {
+    using O = std::optional<T>;
+
+    static_assert(std::is_default_constructible_v<O>,
+        "optional is always default constructible.");
+
+    static_assert(std::is_copy_constructible_v<O> == std::is_copy_constructible_v<T>,
+        "optional<T> is copy constructible if and only if T is copy constructible.");
+
+    static_assert(std::is_move_constructible_v<O> ==
+        (std::is_copy_constructible_v<T> || std::is_move_constructible_v<T>),
+        "optional<T> is move constructible if and only if T is copy or move constructible.");
+
+    static_assert(std::is_copy_assignable_v<O> ==
+        (std::is_copy_constructible_v<T> && std::is_copy_assignable_v<T>),
+        "optional<T> is copy assignable if and only if T is both copy "
+        "constructible and copy assignable.");
+
+    static_assert(std::is_move_assignable_v<O> ==
+        ((std::is_move_constructible_v<T> && std::is_move_assignable_v<T>) ||
+         (std::is_copy_constructible_v<T> && std::is_copy_assignable_v<T>)),
+        "optional<T> is move assignable if and only if T is both move constructible and "
+        "move assignable, or both copy constructible and copy assignable.");
+};
+
+template <class ...Args> static void sink(Args&&...) {}
+
+template <class ...TestTypes>
+struct DoTestsMetafunction {
+    DoTestsMetafunction() { sink(SpecialMemberTest<TestTypes>{}...); }
+};
+
+int main(int, char**) {
+    sink(
+        ImplicitTypes::ApplyTypes<DoTestsMetafunction>{},
+        ExplicitTypes::ApplyTypes<DoTestsMetafunction>{},
+        NonLiteralTypes::ApplyTypes<DoTestsMetafunction>{},
+        NonTrivialTypes::ApplyTypes<DoTestsMetafunction>{}
+    );
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/triviality.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/triviality.pass.cpp
new file mode 100644
index 0000000..fe760e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/triviality.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <optional>
+
+// The following special member functions should propagate the triviality of
+// the element held in the optional (see P0602R4):
+//
+// constexpr optional(const optional& rhs);
+// constexpr optional(optional&& rhs) noexcept(see below);
+// constexpr optional<T>& operator=(const optional& rhs);
+// constexpr optional<T>& operator=(optional&& rhs) noexcept(see below);
+
+
+#include <optional>
+#include <type_traits>
+
+#include "archetypes.h"
+
+#include "test_macros.h"
+
+
+constexpr bool implies(bool p, bool q) {
+    return !p || q;
+}
+
+template <class T>
+struct SpecialMemberTest {
+    using O = std::optional<T>;
+
+    static_assert(implies(std::is_trivially_copy_constructible_v<T>,
+                          std::is_trivially_copy_constructible_v<O>),
+        "optional<T> is trivially copy constructible if T is trivially copy constructible.");
+
+    static_assert(implies(std::is_trivially_move_constructible_v<T>,
+                          std::is_trivially_move_constructible_v<O>),
+        "optional<T> is trivially move constructible if T is trivially move constructible");
+
+    static_assert(implies(std::is_trivially_copy_constructible_v<T> &&
+                          std::is_trivially_copy_assignable_v<T> &&
+                          std::is_trivially_destructible_v<T>,
+
+                          std::is_trivially_copy_assignable_v<O>),
+        "optional<T> is trivially copy assignable if T is "
+        "trivially copy constructible, "
+        "trivially copy assignable, and "
+        "trivially destructible");
+
+    static_assert(implies(std::is_trivially_move_constructible_v<T> &&
+                          std::is_trivially_move_assignable_v<T> &&
+                          std::is_trivially_destructible_v<T>,
+
+                          std::is_trivially_move_assignable_v<O>),
+        "optional<T> is trivially move assignable if T is "
+        "trivially move constructible, "
+        "trivially move assignable, and"
+        "trivially destructible.");
+};
+
+template <class ...Args> static void sink(Args&&...) {}
+
+template <class ...TestTypes>
+struct DoTestsMetafunction {
+    DoTestsMetafunction() { sink(SpecialMemberTest<TestTypes>{}...); }
+};
+
+struct TrivialMoveNonTrivialCopy {
+    TrivialMoveNonTrivialCopy() = default;
+    TrivialMoveNonTrivialCopy(const TrivialMoveNonTrivialCopy&) {}
+    TrivialMoveNonTrivialCopy(TrivialMoveNonTrivialCopy&&) = default;
+    TrivialMoveNonTrivialCopy& operator=(const TrivialMoveNonTrivialCopy&) { return *this; }
+    TrivialMoveNonTrivialCopy& operator=(TrivialMoveNonTrivialCopy&&) = default;
+};
+
+struct TrivialCopyNonTrivialMove {
+    TrivialCopyNonTrivialMove() = default;
+    TrivialCopyNonTrivialMove(const TrivialCopyNonTrivialMove&) = default;
+    TrivialCopyNonTrivialMove(TrivialCopyNonTrivialMove&&) {}
+    TrivialCopyNonTrivialMove& operator=(const TrivialCopyNonTrivialMove&) = default;
+    TrivialCopyNonTrivialMove& operator=(TrivialCopyNonTrivialMove&&) { return *this; }
+};
+
+int main(int, char**) {
+    sink(
+        ImplicitTypes::ApplyTypes<DoTestsMetafunction>{},
+        ExplicitTypes::ApplyTypes<DoTestsMetafunction>{},
+        NonLiteralTypes::ApplyTypes<DoTestsMetafunction>{},
+        NonTrivialTypes::ApplyTypes<DoTestsMetafunction>{},
+        DoTestsMetafunction<TrivialMoveNonTrivialCopy, TrivialCopyNonTrivialMove>{}
+    );
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/types.pass.cpp
new file mode 100644
index 0000000..d097559
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.object/types.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T>
+// class optional
+// {
+// public:
+//     typedef T value_type;
+//     ...
+
+#include <optional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using std::optional;
+
+template <class Opt, class T>
+void
+test()
+{
+    static_assert(std::is_same<typename Opt::value_type, T>::value, "");
+}
+
+int main(int, char**)
+{
+    test<optional<int>, int>();
+    test<optional<const int>, const int>();
+    test<optional<double>, double>();
+    test<optional<const double>, const double>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/equal.pass.cpp
new file mode 100644
index 0000000..96bda6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/equal.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator==(const optional<T>& x, const optional<U>& y);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator==(const X& lhs, const X& rhs) {
+  return lhs.i_ == rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr O o1;    // disengaged
+    constexpr O o2;    // disengaged
+    constexpr O o3{1}; // engaged
+    constexpr O o4{2}; // engaged
+    constexpr O o5{1}; // engaged
+
+    static_assert(o1 == o1, "");
+    static_assert(o1 == o2, "");
+    static_assert(!(o1 == o3), "");
+    static_assert(!(o1 == o4), "");
+    static_assert(!(o1 == o5), "");
+
+    static_assert(o2 == o1, "");
+    static_assert(o2 == o2, "");
+    static_assert(!(o2 == o3), "");
+    static_assert(!(o2 == o4), "");
+    static_assert(!(o2 == o5), "");
+
+    static_assert(!(o3 == o1), "");
+    static_assert(!(o3 == o2), "");
+    static_assert(o3 == o3, "");
+    static_assert(!(o3 == o4), "");
+    static_assert(o3 == o5, "");
+
+    static_assert(!(o4 == o1), "");
+    static_assert(!(o4 == o2), "");
+    static_assert(!(o4 == o3), "");
+    static_assert(o4 == o4, "");
+    static_assert(!(o4 == o5), "");
+
+    static_assert(!(o5 == o1), "");
+    static_assert(!(o5 == o2), "");
+    static_assert(o5 == o3, "");
+    static_assert(!(o5 == o4), "");
+    static_assert(o5 == o5, "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<long>;
+    constexpr O1 o1(42);
+    static_assert(o1 == O2(42), "");
+    static_assert(!(O2(101) == o1), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<const int>;
+    constexpr O1 o1(42);
+    static_assert(o1 == O2(42), "");
+    static_assert(!(O2(101) == o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/greater_equal.pass.cpp
new file mode 100644
index 0000000..399823c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/greater_equal.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator>= (const optional<T>& x, const optional<U>& y);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator>=(const X& lhs, const X& rhs) {
+  return lhs.i_ >= rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef optional<X> O;
+
+    constexpr O o1;    // disengaged
+    constexpr O o2;    // disengaged
+    constexpr O o3{1}; // engaged
+    constexpr O o4{2}; // engaged
+    constexpr O o5{1}; // engaged
+
+    static_assert((o1 >= o1), "");
+    static_assert((o1 >= o2), "");
+    static_assert(!(o1 >= o3), "");
+    static_assert(!(o1 >= o4), "");
+    static_assert(!(o1 >= o5), "");
+
+    static_assert((o2 >= o1), "");
+    static_assert((o2 >= o2), "");
+    static_assert(!(o2 >= o3), "");
+    static_assert(!(o2 >= o4), "");
+    static_assert(!(o2 >= o5), "");
+
+    static_assert((o3 >= o1), "");
+    static_assert((o3 >= o2), "");
+    static_assert((o3 >= o3), "");
+    static_assert(!(o3 >= o4), "");
+    static_assert((o3 >= o5), "");
+
+    static_assert((o4 >= o1), "");
+    static_assert((o4 >= o2), "");
+    static_assert((o4 >= o3), "");
+    static_assert((o4 >= o4), "");
+    static_assert((o4 >= o5), "");
+
+    static_assert((o5 >= o1), "");
+    static_assert((o5 >= o2), "");
+    static_assert((o5 >= o3), "");
+    static_assert(!(o5 >= o4), "");
+    static_assert((o5 >= o5), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<long>;
+    constexpr O1 o1(42);
+    static_assert(o1 >= O2(42), "");
+    static_assert(!(O2(11) >= o1), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<const int>;
+    constexpr O1 o1(42);
+    static_assert(o1 >= O2(42), "");
+    static_assert(!(O2(1) >= o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/greater_than.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/greater_than.pass.cpp
new file mode 100644
index 0000000..6b877c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/greater_than.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator> (const optional<T>& x, const optional<U>& y);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator>(const X& lhs, const X& rhs) { return lhs.i_ > rhs.i_; }
+
+int main(int, char**) {
+  {
+    typedef optional<X> O;
+
+    constexpr O o1;    // disengaged
+    constexpr O o2;    // disengaged
+    constexpr O o3{1}; // engaged
+    constexpr O o4{2}; // engaged
+    constexpr O o5{1}; // engaged
+
+    static_assert(!(o1 > o1), "");
+    static_assert(!(o1 > o2), "");
+    static_assert(!(o1 > o3), "");
+    static_assert(!(o1 > o4), "");
+    static_assert(!(o1 > o5), "");
+
+    static_assert(!(o2 > o1), "");
+    static_assert(!(o2 > o2), "");
+    static_assert(!(o2 > o3), "");
+    static_assert(!(o2 > o4), "");
+    static_assert(!(o2 > o5), "");
+
+    static_assert((o3 > o1), "");
+    static_assert((o3 > o2), "");
+    static_assert(!(o3 > o3), "");
+    static_assert(!(o3 > o4), "");
+    static_assert(!(o3 > o5), "");
+
+    static_assert((o4 > o1), "");
+    static_assert((o4 > o2), "");
+    static_assert((o4 > o3), "");
+    static_assert(!(o4 > o4), "");
+    static_assert((o4 > o5), "");
+
+    static_assert((o5 > o1), "");
+    static_assert((o5 > o2), "");
+    static_assert(!(o5 > o3), "");
+    static_assert(!(o5 > o4), "");
+    static_assert(!(o5 > o5), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<long>;
+    constexpr O1 o1(42);
+    static_assert(o1 > O2(1), "");
+    static_assert(!(O2(42) > o1), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<const int>;
+    constexpr O1 o1(42);
+    static_assert(o1 > O2(1), "");
+    static_assert(!(O2(42) > o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/less_equal.pass.cpp
new file mode 100644
index 0000000..aa605cd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/less_equal.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator<= (const optional<T>& x, const optional<U>& y);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator<=(const X& lhs, const X& rhs) {
+  return lhs.i_ <= rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef optional<X> O;
+
+    constexpr O o1;    // disengaged
+    constexpr O o2;    // disengaged
+    constexpr O o3{1}; // engaged
+    constexpr O o4{2}; // engaged
+    constexpr O o5{1}; // engaged
+
+    static_assert((o1 <= o1), "");
+    static_assert((o1 <= o2), "");
+    static_assert((o1 <= o3), "");
+    static_assert((o1 <= o4), "");
+    static_assert((o1 <= o5), "");
+
+    static_assert((o2 <= o1), "");
+    static_assert((o2 <= o2), "");
+    static_assert((o2 <= o3), "");
+    static_assert((o2 <= o4), "");
+    static_assert((o2 <= o5), "");
+
+    static_assert(!(o3 <= o1), "");
+    static_assert(!(o3 <= o2), "");
+    static_assert((o3 <= o3), "");
+    static_assert((o3 <= o4), "");
+    static_assert((o3 <= o5), "");
+
+    static_assert(!(o4 <= o1), "");
+    static_assert(!(o4 <= o2), "");
+    static_assert(!(o4 <= o3), "");
+    static_assert((o4 <= o4), "");
+    static_assert(!(o4 <= o5), "");
+
+    static_assert(!(o5 <= o1), "");
+    static_assert(!(o5 <= o2), "");
+    static_assert((o5 <= o3), "");
+    static_assert((o5 <= o4), "");
+    static_assert((o5 <= o5), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<long>;
+    constexpr O1 o1(42);
+    static_assert(o1 <= O2(42), "");
+    static_assert(!(O2(101) <= o1), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<const int>;
+    constexpr O1 o1(42);
+    static_assert(o1 <= O2(42), "");
+    static_assert(!(O2(101) <= o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/less_than.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/less_than.pass.cpp
new file mode 100644
index 0000000..53474eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/less_than.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator< (const optional<T>& x, const optional<U>& y);
+
+#include <optional>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator<(const X& lhs, const X& rhs) { return lhs.i_ < rhs.i_; }
+
+int main(int, char**) {
+  {
+    typedef optional<X> O;
+
+    constexpr O o1;    // disengaged
+    constexpr O o2;    // disengaged
+    constexpr O o3{1}; // engaged
+    constexpr O o4{2}; // engaged
+    constexpr O o5{1}; // engaged
+
+    static_assert(!(o1 < o1), "");
+    static_assert(!(o1 < o2), "");
+    static_assert((o1 < o3), "");
+    static_assert((o1 < o4), "");
+    static_assert((o1 < o5), "");
+
+    static_assert(!(o2 < o1), "");
+    static_assert(!(o2 < o2), "");
+    static_assert((o2 < o3), "");
+    static_assert((o2 < o4), "");
+    static_assert((o2 < o5), "");
+
+    static_assert(!(o3 < o1), "");
+    static_assert(!(o3 < o2), "");
+    static_assert(!(o3 < o3), "");
+    static_assert((o3 < o4), "");
+    static_assert(!(o3 < o5), "");
+
+    static_assert(!(o4 < o1), "");
+    static_assert(!(o4 < o2), "");
+    static_assert(!(o4 < o3), "");
+    static_assert(!(o4 < o4), "");
+    static_assert(!(o4 < o5), "");
+
+    static_assert(!(o5 < o1), "");
+    static_assert(!(o5 < o2), "");
+    static_assert(!(o5 < o3), "");
+    static_assert((o5 < o4), "");
+    static_assert(!(o5 < o5), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<long>;
+    constexpr O1 o1(42);
+    static_assert(o1 < O2(101), "");
+    static_assert(!(O2(101) < o1), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<const int>;
+    constexpr O1 o1(42);
+    static_assert(o1 < O2(101), "");
+    static_assert(!(O2(101) < o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/not_equal.pass.cpp
new file mode 100644
index 0000000..290459d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.relops/not_equal.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U> constexpr bool operator!=(const optional<T>& x, const optional<U>& y);
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+using std::optional;
+
+struct X {
+  int i_;
+
+  constexpr X(int i) : i_(i) {}
+};
+
+constexpr bool operator!=(const X& lhs, const X& rhs) {
+  return lhs.i_ != rhs.i_;
+}
+
+int main(int, char**) {
+  {
+    typedef X T;
+    typedef optional<T> O;
+
+    constexpr O o1;    // disengaged
+    constexpr O o2;    // disengaged
+    constexpr O o3{1}; // engaged
+    constexpr O o4{2}; // engaged
+    constexpr O o5{1}; // engaged
+
+    static_assert(!(o1 != o1), "");
+    static_assert(!(o1 != o2), "");
+    static_assert((o1 != o3), "");
+    static_assert((o1 != o4), "");
+    static_assert((o1 != o5), "");
+
+    static_assert(!(o2 != o1), "");
+    static_assert(!(o2 != o2), "");
+    static_assert((o2 != o3), "");
+    static_assert((o2 != o4), "");
+    static_assert((o2 != o5), "");
+
+    static_assert((o3 != o1), "");
+    static_assert((o3 != o2), "");
+    static_assert(!(o3 != o3), "");
+    static_assert((o3 != o4), "");
+    static_assert(!(o3 != o5), "");
+
+    static_assert((o4 != o1), "");
+    static_assert((o4 != o2), "");
+    static_assert((o4 != o3), "");
+    static_assert(!(o4 != o4), "");
+    static_assert((o4 != o5), "");
+
+    static_assert((o5 != o1), "");
+    static_assert((o5 != o2), "");
+    static_assert(!(o5 != o3), "");
+    static_assert((o5 != o4), "");
+    static_assert(!(o5 != o5), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<long>;
+    constexpr O1 o1(42);
+    static_assert(o1 != O2(101), "");
+    static_assert(!(O2(42) != o1), "");
+  }
+  {
+    using O1 = optional<int>;
+    using O2 = optional<const int>;
+    constexpr O1 o1(42);
+    static_assert(o1 != O2(101), "");
+    static_assert(!(O2(42) != o1), "");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional.pass.cpp
new file mode 100644
index 0000000..1bd688b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_optional_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <optional>
+//
+// template <class T>
+//   constexpr optional<decay_t<T>> make_optional(T&& v);
+
+#include <optional>
+#include <string>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        int arr[10];
+        auto opt = std::make_optional(arr);
+        ASSERT_SAME_TYPE(decltype(opt), std::optional<int*>);
+        assert(*opt == arr);
+    }
+    {
+        constexpr auto opt = std::make_optional(2);
+        ASSERT_SAME_TYPE(decltype(opt), const std::optional<int>);
+        static_assert(opt.value() == 2);
+    }
+    {
+        auto opt = std::make_optional(2);
+        ASSERT_SAME_TYPE(decltype(opt), std::optional<int>);
+        assert(*opt == 2);
+    }
+    {
+        const std::string s = "123";
+        auto opt = std::make_optional(s);
+        ASSERT_SAME_TYPE(decltype(opt), std::optional<std::string>);
+        assert(*opt == "123");
+    }
+    {
+        std::unique_ptr<int> s = std::make_unique<int>(3);
+        auto opt = std::make_optional(std::move(s));
+        ASSERT_SAME_TYPE(decltype(opt), std::optional<std::unique_ptr<int>>);
+        assert(**opt == 3);
+        assert(s == nullptr);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional_explicit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional_explicit.pass.cpp
new file mode 100644
index 0000000..e7931e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional_explicit.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class... Args>
+//   constexpr optional<T> make_optional(Args&&... args);
+
+#include <optional>
+#include <string>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        constexpr auto opt = std::make_optional<int>('a');
+        static_assert(*opt == int('a'));
+    }
+    {
+        std::string s = "123";
+        auto opt = std::make_optional<std::string>(s);
+        assert(*opt == "123");
+    }
+    {
+        std::unique_ptr<int> s = std::make_unique<int>(3);
+        auto opt = std::make_optional<std::unique_ptr<int>>(std::move(s));
+        assert(**opt == 3);
+        assert(s == nullptr);
+    }
+    {
+        auto opt = std::make_optional<std::string>(4u, 'X');
+        assert(*opt == "XXXX");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional_explicit_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional_explicit_initializer_list.pass.cpp
new file mode 100644
index 0000000..80371d6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/make_optional_explicit_initializer_list.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T, class U, class... Args>
+//   constexpr optional<T> make_optional(initializer_list<U> il, Args&&... args);
+
+#include <cassert>
+#include <memory>
+#include <optional>
+#include <string>
+
+#include "test_macros.h"
+
+struct TestT {
+  int x;
+  int size;
+  int *ptr;
+  constexpr TestT(std::initializer_list<int> il)
+    : x(*il.begin()), size(static_cast<int>(il.size())), ptr(nullptr) {}
+  constexpr TestT(std::initializer_list<int> il, int *p)
+    : x(*il.begin()), size(static_cast<int>(il.size())), ptr(p) {}
+};
+
+constexpr bool test()
+{
+  {
+    auto opt = std::make_optional<TestT>({42, 2, 3});
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<TestT>);
+    assert(opt->x == 42);
+    assert(opt->size == 3);
+    assert(opt->ptr == nullptr);
+  }
+  {
+    int i = 42;
+    auto opt = std::make_optional<TestT>({42, 2, 3}, &i);
+    ASSERT_SAME_TYPE(decltype(opt), std::optional<TestT>);
+    assert(opt->x == 42);
+    assert(opt->size == 3);
+    assert(opt->ptr == &i);
+  }
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+  static_assert(test());
+  {
+    auto opt = std::make_optional<std::string>({'1', '2', '3'});
+    assert(*opt == "123");
+  }
+  {
+    auto opt = std::make_optional<std::string>({'a', 'b', 'c'}, std::allocator<char>{});
+    assert(*opt == "abc");
+  }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/swap.pass.cpp
new file mode 100644
index 0000000..0da3a82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.specalg/swap.pass.cpp
@@ -0,0 +1,353 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// template <class T> void swap(optional<T>& x, optional<T>& y)
+//     noexcept(noexcept(x.swap(y)));
+
+#include <optional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+using std::optional;
+
+class X
+{
+    int i_;
+public:
+    static unsigned dtor_called;
+    X(int i) : i_(i) {}
+    X(X&& x) = default;
+    X& operator=(X&&) = default;
+    ~X() {++dtor_called;}
+
+    friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
+};
+
+unsigned X::dtor_called = 0;
+
+class Y
+{
+    int i_;
+public:
+    static unsigned dtor_called;
+    Y(int i) : i_(i) {}
+    Y(Y&&) = default;
+    ~Y() {++dtor_called;}
+
+    friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
+    friend void swap(Y& x, Y& y) {std::swap(x.i_, y.i_);}
+};
+
+unsigned Y::dtor_called = 0;
+
+class Z
+{
+    int i_;
+public:
+    Z(int i) : i_(i) {}
+    Z(Z&&) { TEST_THROW(7);}
+
+    friend constexpr bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
+    friend void swap(Z&, Z&) { TEST_THROW(6);}
+};
+
+
+struct NonSwappable {
+    NonSwappable(NonSwappable const&) = delete;
+};
+void swap(NonSwappable&, NonSwappable&) = delete;
+
+void test_swap_sfinae() {
+    using std::optional;
+    {
+        using T = TestTypes::TestType;
+        static_assert(std::is_swappable_v<optional<T>>, "");
+    }
+    {
+        using T = TestTypes::MoveOnly;
+        static_assert(std::is_swappable_v<optional<T>>, "");
+    }
+    {
+        using T = TestTypes::Copyable;
+        static_assert(std::is_swappable_v<optional<T>>, "");
+    }
+    {
+        using T = TestTypes::NoCtors;
+        static_assert(!std::is_swappable_v<optional<T>>, "");
+    }
+    {
+        using T = NonSwappable;
+        static_assert(!std::is_swappable_v<optional<T>>, "");
+    }
+    {
+        // Even though CopyOnly has deleted move operations, those operations
+        // cause optional<CopyOnly> to have implicitly deleted move operations
+        // that decay into copies.
+        using T = TestTypes::CopyOnly;
+        using Opt = optional<T>;
+        T::reset();
+        Opt L(101), R(42);
+        T::reset_constructors();
+        std::swap(L, R);
+        assert(L->value == 42);
+        assert(R->value == 101);
+        assert(T::copy_constructed == 1);
+        assert(T::constructed == T::copy_constructed);
+        assert(T::assigned == 2);
+        assert(T::assigned == T::copy_assigned);
+    }
+}
+
+int main(int, char**)
+{
+    test_swap_sfinae();
+    {
+        optional<int> opt1;
+        optional<int> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<int> opt1(1);
+        optional<int> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<int> opt1;
+        optional<int> opt2(2);
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<int> opt1(1);
+        optional<int> opt2(2);
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<X> opt1;
+        optional<X> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        assert(X::dtor_called == 0);
+    }
+    {
+        optional<X> opt1(1);
+        optional<X> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        X::dtor_called = 0;
+        swap(opt1, opt2);
+        assert(X::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<X> opt1;
+        optional<X> opt2(2);
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        X::dtor_called = 0;
+        swap(opt1, opt2);
+        assert(X::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<X> opt1(1);
+        optional<X> opt2(2);
+        static_assert(noexcept(swap(opt1, opt2)) == true, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        X::dtor_called = 0;
+        swap(opt1, opt2);
+        assert(X::dtor_called == 1);  // from inside std::swap
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<Y> opt1;
+        optional<Y> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        assert(Y::dtor_called == 0);
+    }
+    {
+        optional<Y> opt1(1);
+        optional<Y> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        Y::dtor_called = 0;
+        swap(opt1, opt2);
+        assert(Y::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<Y> opt1;
+        optional<Y> opt2(2);
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        Y::dtor_called = 0;
+        swap(opt1, opt2);
+        assert(Y::dtor_called == 1);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<Y> opt1(1);
+        optional<Y> opt2(2);
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        Y::dtor_called = 0;
+        swap(opt1, opt2);
+        assert(Y::dtor_called == 0);
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 2);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 1);
+    }
+    {
+        optional<Z> opt1;
+        optional<Z> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+        swap(opt1, opt2);
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == false);
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        optional<Z> opt1;
+        opt1.emplace(1);
+        optional<Z> opt2;
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+        try
+        {
+            swap(opt1, opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 7);
+        }
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == false);
+    }
+    {
+        optional<Z> opt1;
+        optional<Z> opt2;
+        opt2.emplace(2);
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        try
+        {
+            swap(opt1, opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 7);
+        }
+        assert(static_cast<bool>(opt1) == false);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+    }
+    {
+        optional<Z> opt1;
+        opt1.emplace(1);
+        optional<Z> opt2;
+        opt2.emplace(2);
+        static_assert(noexcept(swap(opt1, opt2)) == false, "");
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+        try
+        {
+            swap(opt1, opt2);
+            assert(false);
+        }
+        catch (int i)
+        {
+            assert(i == 6);
+        }
+        assert(static_cast<bool>(opt1) == true);
+        assert(*opt1 == 1);
+        assert(static_cast<bool>(opt2) == true);
+        assert(*opt2 == 2);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_in_place_t.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_in_place_t.fail.cpp
new file mode 100644
index 0000000..b95cb56
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_in_place_t.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// A program that necessitates the instantiation of template optional for
+// (possibly cv-qualified) in_place_t is ill-formed.
+
+#include <optional>
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::in_place_t;
+    using std::in_place;
+
+    optional<in_place_t> opt; // expected-note {{requested here}}
+    // expected-error@optional:* {{instantiation of optional with in_place_t is ill-formed}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_includes_initializer_list.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_includes_initializer_list.pass.cpp
new file mode 100644
index 0000000..166d061
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_includes_initializer_list.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// #include <initializer_list>
+
+#include <optional>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    using std::optional;
+
+    std::initializer_list<int> list;
+    (void)list;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_nullopt_t.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_nullopt_t.fail.cpp
new file mode 100644
index 0000000..044c4e6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/optional/optional.syn/optional_nullopt_t.fail.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// <optional>
+
+// A program that necessitates the instantiation of template optional for
+// (possibly cv-qualified) nullopt_t is ill-formed.
+
+#include <optional>
+
+int main(int, char**)
+{
+    using std::optional;
+    using std::nullopt_t;
+    using std::nullopt;
+
+    optional<nullopt_t> opt; // expected-note 1 {{requested here}}
+    optional<const nullopt_t> opt1; // expected-note 1 {{requested here}}
+    optional<nullopt_t &> opt2; // expected-note 1 {{requested here}}
+    optional<nullopt_t &&> opt3; // expected-note 1 {{requested here}}
+    // expected-error@optional:* 4 {{instantiation of optional with nullopt_t is ill-formed}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.compile.fail.cpp
new file mode 100644
index 0000000..abf7563
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_add
+
+#include <ratio>
+
+int main(int, char**)
+{
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.pass.cpp
new file mode 100644
index 0000000..50cea31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_add.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_add
+
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 2 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 3 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<-1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, -2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<-1, 1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, -1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<56987354, 467584654> R1;
+    typedef std::ratio<544668, 22145> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 127970191639601LL && R::den == 5177331081415LL, "");
+    }
+    {
+    typedef std::ratio<0> R1;
+    typedef std::ratio<0> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 0 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1> R1;
+    typedef std::ratio<0> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<0> R1;
+    typedef std::ratio<1> R2;
+    typedef std::ratio_add<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_divide.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_divide.compile.fail.cpp
new file mode 100644
index 0000000..387f629
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_divide.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_divide
+
+#include <ratio>
+
+int main(int, char**)
+{
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<1, 2> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_divide.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_divide.pass.cpp
new file mode 100644
index 0000000..79a660f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_divide.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_divide
+
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<-1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, -2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<-1, 1> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, -1> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<56987354, 467584654> R1;
+    typedef std::ratio<544668, 22145> R2;
+    typedef std::ratio_divide<R1, R2>::type R;
+    static_assert(R::num == 630992477165LL && R::den == 127339199162436LL, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_multiply.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_multiply.compile.fail.cpp
new file mode 100644
index 0000000..ef59bb3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_multiply.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_multiply
+
+#include <ratio>
+
+int main(int, char**)
+{
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<2, 1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_multiply.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_multiply.pass.cpp
new file mode 100644
index 0000000..dcb1684
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_multiply.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_multiply
+
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<-1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, -2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<-1, 1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, -1> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<56987354, 467584654> R1;
+    typedef std::ratio<544668, 22145> R2;
+    typedef std::ratio_multiply<R1, R2>::type R;
+    static_assert(R::num == 15519594064236LL && R::den == 5177331081415LL, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_subtract.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_subtract.compile.fail.cpp
new file mode 100644
index 0000000..8b00462
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_subtract.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_subtract
+
+#include <ratio>
+
+int main(int, char**)
+{
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_subtract.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_subtract.pass.cpp
new file mode 100644
index 0000000..bba506f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.arithmetic/ratio_subtract.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_subtract
+
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == 0 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<-1, 2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == -3 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, -2> R1;
+    typedef std::ratio<1, 1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == -3 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<-1, 1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == 3 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<1, 2> R1;
+    typedef std::ratio<1, -1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == 3 && R::den == 2, "");
+    }
+    {
+    typedef std::ratio<56987354, 467584654> R1;
+    typedef std::ratio<544668, 22145> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == -126708206685271LL && R::den == 5177331081415LL, "");
+    }
+    {
+    typedef std::ratio<0> R1;
+    typedef std::ratio<0> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == 0 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<1> R1;
+    typedef std::ratio<0> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == 1 && R::den == 1, "");
+    }
+    {
+    typedef std::ratio<0> R1;
+    typedef std::ratio<1> R2;
+    typedef std::ratio_subtract<R1, R2>::type R;
+    static_assert(R::num == -1 && R::den == 1, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_equal.pass.cpp
new file mode 100644
index 0000000..d0b1d5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_equal.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_equal
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <class Rat1, class Rat2, bool result>
+void test()
+{
+    static_assert((result == std::ratio_equal<Rat1, Rat2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((result == std::ratio_equal_v<Rat1, Rat2>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, -1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, -0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, false>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_greater.pass.cpp
new file mode 100644
index 0000000..dfb0e8f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_greater.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_greater
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <class Rat1, class Rat2, bool result>
+void test()
+{
+    static_assert((result == std::ratio_greater<Rat1, Rat2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((result == std::ratio_greater_v<Rat1, Rat2>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, -1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, -0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, true>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_greater_equal.pass.cpp
new file mode 100644
index 0000000..811706c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_greater_equal.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_greater_equal
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <class Rat1, class Rat2, bool result>
+void test()
+{
+    static_assert((result == std::ratio_greater_equal<Rat1, Rat2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((result == std::ratio_greater_equal_v<Rat1, Rat2>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, -1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, -0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, true>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_less.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_less.pass.cpp
new file mode 100644
index 0000000..45ba7cb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_less.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_less
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <class Rat1, class Rat2, bool result>
+void test()
+{
+    static_assert((result == std::ratio_less<Rat1, Rat2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((result == std::ratio_less_v<Rat1, Rat2>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, -1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, -0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 0x7FFFFFFFFFFFFFFELL> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFDLL, 0x7FFFFFFFFFFFFFFCLL> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFDLL, 0x7FFFFFFFFFFFFFFCLL> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 0x7FFFFFFFFFFFFFFELL> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFDLL, 0x7FFFFFFFFFFFFFFCLL> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 0x7FFFFFFFFFFFFFFELL> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 0x7FFFFFFFFFFFFFFELL> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFELL, 0x7FFFFFFFFFFFFFFDLL> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<641981, 1339063> R1;
+    typedef std::ratio<1291640, 2694141LL> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1291640, 2694141LL> R1;
+    typedef std::ratio<641981, 1339063> R2;
+    test<R1, R2, true>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_less_equal.pass.cpp
new file mode 100644
index 0000000..ebb8624
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_less_equal.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_less_equal
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <class Rat1, class Rat2, bool result>
+void test()
+{
+    static_assert((result == std::ratio_less_equal<Rat1, Rat2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((result == std::ratio_less_equal_v<Rat1, Rat2>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, -1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, -0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, false>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_not_equal.pass.cpp
new file mode 100644
index 0000000..5000e73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.comparison/ratio_not_equal.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio_not_equal
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <class Rat1, class Rat2, bool result>
+void test()
+{
+    static_assert((result == std::ratio_not_equal<Rat1, Rat2>::value), "");
+#if TEST_STD_VER > 14
+    static_assert((result == std::ratio_not_equal_v<Rat1, Rat2>), "");
+#endif
+}
+
+int main(int, char**)
+{
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, false>();
+    }
+    {
+    typedef std::ratio<1, 1> R1;
+    typedef std::ratio<1, -1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<-0x7FFFFFFFFFFFFFFFLL, 1> R1;
+    typedef std::ratio<0x7FFFFFFFFFFFFFFFLL, 1> R2;
+    test<R1, R2, true>();
+    }
+    {
+    typedef std::ratio<1, 0x7FFFFFFFFFFFFFFFLL> R1;
+    typedef std::ratio<1, -0x7FFFFFFFFFFFFFFFLL> R2;
+    test<R1, R2, true>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio.pass.cpp
new file mode 100644
index 0000000..c14c7d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio:  The static data members num and den shall have the common
+//    divisor of the absolute values of N and D:
+
+#include <ratio>
+
+#include "test_macros.h"
+
+template <long long N, long long D, long long eN, long long eD>
+void test()
+{
+    static_assert((std::ratio<N, D>::num == eN), "");
+    static_assert((std::ratio<N, D>::den == eD), "");
+}
+
+int main(int, char**)
+{
+    test<1, 1, 1, 1>();
+    test<1, 10, 1, 10>();
+    test<10, 10, 1, 1>();
+    test<10, 1, 10, 1>();
+    test<12, 4, 3, 1>();
+    test<12, -4, -3, 1>();
+    test<-12, 4, -3, 1>();
+    test<-12, -4, 3, 1>();
+    test<4, 12, 1, 3>();
+    test<4, -12, -1, 3>();
+    test<-4, 12, -1, 3>();
+    test<-4, -12, 1, 3>();
+    test<222, 333, 2, 3>();
+    test<222, -333, -2, 3>();
+    test<-222, 333, -2, 3>();
+    test<-222, -333, 2, 3>();
+    test<0x7FFFFFFFFFFFFFFFLL, 127, 72624976668147841LL, 1>();
+    test<-0x7FFFFFFFFFFFFFFFLL, 127, -72624976668147841LL, 1>();
+    test<0x7FFFFFFFFFFFFFFFLL, -127, -72624976668147841LL, 1>();
+    test<-0x7FFFFFFFFFFFFFFFLL, -127, 72624976668147841LL, 1>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio1.compile.fail.cpp
new file mode 100644
index 0000000..0841d85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio1.compile.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio:  The template argument D shall not be zero
+
+#include <ratio>
+#include <cstdint>
+
+int main(int, char**)
+{
+    const std::intmax_t t1 = std::ratio<1, 0>::num;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio2.compile.fail.cpp
new file mode 100644
index 0000000..f8bebc8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio2.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio:  the absolute values of the template arguments N and D
+//               shall be representable by type intmax_t.
+
+#include <ratio>
+#include <cstdint>
+
+int main(int, char**)
+{
+    const std::intmax_t t1 = std::ratio<0x8000000000000000ULL, 1>::num;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio3.compile.fail.cpp
new file mode 100644
index 0000000..78310c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.ratio/ratio3.compile.fail.cpp
@@ -0,0 +1,20 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio:  the absolute values of the template arguments N and D
+//               shall be representable by type intmax_t.
+
+#include <ratio>
+#include <cstdint>
+
+int main(int, char**)
+{
+    const std::intmax_t t1 = std::ratio<1, 0x8000000000000000ULL>::num;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.si/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.si/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/ratio.si/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/ratio/typedefs.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/ratio/typedefs.pass.cpp
new file mode 100644
index 0000000..06e9682
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/ratio/typedefs.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test ratio typedef's
+
+#include <ratio>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    static_assert(std::atto::num == 1 && std::atto::den == 1000000000000000000ULL, "");
+    static_assert(std::femto::num == 1 && std::femto::den == 1000000000000000ULL, "");
+    static_assert(std::pico::num == 1 && std::pico::den == 1000000000000ULL, "");
+    static_assert(std::nano::num == 1 && std::nano::den == 1000000000ULL, "");
+    static_assert(std::micro::num == 1 && std::micro::den == 1000000ULL, "");
+    static_assert(std::milli::num == 1 && std::milli::den == 1000ULL, "");
+    static_assert(std::centi::num == 1 && std::centi::den == 100ULL, "");
+    static_assert(std::deci::num == 1 && std::deci::den == 10ULL, "");
+    static_assert(std::deca::num == 10ULL && std::deca::den == 1, "");
+    static_assert(std::hecto::num == 100ULL && std::hecto::den == 1, "");
+    static_assert(std::kilo::num == 1000ULL && std::kilo::den == 1, "");
+    static_assert(std::mega::num == 1000000ULL && std::mega::den == 1, "");
+    static_assert(std::giga::num == 1000000000ULL && std::giga::den == 1, "");
+    static_assert(std::tera::num == 1000000000000ULL && std::tera::den == 1, "");
+    static_assert(std::peta::num == 1000000000000000ULL && std::peta::den == 1, "");
+    static_assert(std::exa::num == 1000000000000000000ULL && std::exa::den == 1, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/README.TXT b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/README.TXT
new file mode 100644
index 0000000..20f77f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/README.TXT
@@ -0,0 +1,16 @@
+Test Naming and Directory Structure
+===================================
+
+The directory structure for the unique_ptr class templates differs from the
+normal test directory naming conventions (e.g. matching the stable name in the standard).
+
+Instead of having a [unique.ptr.single] and [unique.ptr.runtime] directory,
+each containing their own tests, a single directory, "unique.ptr.class",
+contains both sets of tests.
+
+This allows the common behavior of the two unique_ptr specializations to be
+tested in the same place without duplication.
+
+Tests specific to [unique.ptr.single] have the suffix ".single.pass.cpp"
+and those specific to [unique.ptr.runtime] are named "*.runtime.pass.cpp".
+Tests for both specializations are named normally.
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/pointer_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/pointer_type.pass.cpp
new file mode 100644
index 0000000..424da1f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/pointer_type.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr::pointer type
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct Deleter {
+  struct pointer {};
+};
+
+struct D2 {
+private:
+  typedef void pointer;
+};
+
+struct D3 {
+  static long pointer;
+};
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, int[], int>::type VT;
+  {
+    typedef std::unique_ptr<VT> P;
+    static_assert((std::is_same<typename P::pointer, int*>::value), "");
+  }
+  {
+    typedef std::unique_ptr<VT, Deleter> P;
+    static_assert((std::is_same<typename P::pointer, Deleter::pointer>::value),
+                  "");
+  }
+#if TEST_STD_VER >= 11
+  {
+    typedef std::unique_ptr<VT, D2> P;
+    static_assert(std::is_same<typename P::pointer, int*>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, D3> P;
+    static_assert(std::is_same<typename P::pointer, int*>::value, "");
+  }
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move.pass.cpp
new file mode 100644
index 0000000..9a21d46
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Self assignement post-conditions are tested.
+// ADDITIONAL_COMPILE_FLAGS: -Wno-self-move
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr move assignment
+
+// test move assignment.  Should only require a MoveConstructible deleter, or if
+//    deleter is a reference, not even that.
+
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "unique_ptr_test_helper.h"
+
+struct GenericDeleter {
+  void operator()(void*) const;
+};
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 5 : 1;
+  {
+    std::unique_ptr<VT> s1(newValue<VT>(expect_alive));
+    A* p = s1.get();
+    std::unique_ptr<VT> s2(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == (expect_alive * 2));
+    s2 = std::move(s1);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(s2.get() == p);
+    assert(s1.get() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    std::unique_ptr<VT, Deleter<VT> > s1(newValue<VT>(expect_alive),
+                                         Deleter<VT>(5));
+    A* p = s1.get();
+    std::unique_ptr<VT, Deleter<VT> > s2(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == (expect_alive * 2));
+    s2 = std::move(s1);
+    assert(s2.get() == p);
+    assert(s1.get() == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(s2.get_deleter().state() == 5);
+    assert(s1.get_deleter().state() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    CDeleter<VT> d1(5);
+    std::unique_ptr<VT, CDeleter<VT>&> s1(newValue<VT>(expect_alive), d1);
+    A* p = s1.get();
+    CDeleter<VT> d2(6);
+    std::unique_ptr<VT, CDeleter<VT>&> s2(newValue<VT>(expect_alive), d2);
+    s2 = std::move(s1);
+    assert(s2.get() == p);
+    assert(s1.get() == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(d1.state() == 5);
+    assert(d2.state() == 5);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    std::unique_ptr<VT> s(newValue<VT>(expect_alive));
+    A* p = s.get();
+    s = std::move(s);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(s.get() == p);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  typedef typename std::conditional<IsArray, int[], int>::type VT;
+  {
+    typedef std::unique_ptr<VT> U;
+    static_assert(!std::is_assignable<U, U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, GenericDeleter> U;
+    static_assert(!std::is_assignable<U, U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, NCDeleter<VT>&> U;
+    static_assert(!std::is_assignable<U, U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, const NCDeleter<VT>&> U;
+    static_assert(!std::is_assignable<U, U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&>::value, "");
+    static_assert(!std::is_assignable<U, const U&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U, U&&>::value, "");
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_basic</*IsArray*/ false>();
+    test_sfinae<false>();
+  }
+  {
+    test_basic</*IsArray*/ true>();
+    test_sfinae<true>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.pass.cpp
new file mode 100644
index 0000000..61a2bfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.pass.cpp
@@ -0,0 +1,430 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr converting move ctor
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+#include "type_id.h"
+
+template <int ID = 0>
+struct GenericDeleter {
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+
+template <int ID = 0>
+struct GenericConvertingDeleter {
+  template <int OID>
+  TEST_CONSTEXPR_CXX23 GenericConvertingDeleter(GenericConvertingDeleter<OID>) {}
+
+  template <int OID>
+  TEST_CONSTEXPR_CXX23 GenericConvertingDeleter& operator=(GenericConvertingDeleter<OID> const&) {
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+
+template <class T, class U>
+using EnableIfNotSame = typename std::enable_if<
+    !std::is_same<typename std::decay<T>::type, typename std::decay<U>::type>::value
+>::type;
+
+template <class Templ, class Other>
+struct is_specialization;
+
+template <template <int> class Templ, int ID1, class Other>
+struct is_specialization<Templ<ID1>, Other> : std::false_type {};
+
+template <template <int> class Templ, int ID1, int ID2>
+struct is_specialization<Templ<ID1>, Templ<ID2> > : std::true_type {};
+
+template <class Templ, class Other>
+using EnableIfSpecialization = typename std::enable_if<
+    is_specialization<Templ, typename std::decay<Other>::type >::value
+  >::type;
+
+template <int ID> struct TrackingDeleter;
+template <int ID> struct ConstTrackingDeleter;
+
+template <int ID>
+struct TrackingDeleter {
+  TrackingDeleter() : arg_type(&makeArgumentID<>()) {}
+
+  TrackingDeleter(TrackingDeleter const&)
+      : arg_type(&makeArgumentID<TrackingDeleter const&>()) {}
+
+  TrackingDeleter(TrackingDeleter&&)
+      : arg_type(&makeArgumentID<TrackingDeleter &&>()) {}
+
+  template <class T, class = EnableIfSpecialization<TrackingDeleter, T> >
+  TrackingDeleter(T&&) : arg_type(&makeArgumentID<T&&>()) {}
+
+  TrackingDeleter& operator=(TrackingDeleter const&) {
+    arg_type = &makeArgumentID<TrackingDeleter const&>();
+    return *this;
+  }
+
+  TrackingDeleter& operator=(TrackingDeleter &&) {
+    arg_type = &makeArgumentID<TrackingDeleter &&>();
+    return *this;
+  }
+
+  template <class T, class = EnableIfSpecialization<TrackingDeleter, T> >
+  TrackingDeleter& operator=(T&&) {
+    arg_type = &makeArgumentID<T&&>();
+    return *this;
+  }
+
+  void operator()(void*) const {}
+
+public:
+  TypeID const* reset() const {
+    TypeID const* tmp = arg_type;
+    arg_type = nullptr;
+    return tmp;
+  }
+
+  mutable TypeID const* arg_type;
+};
+
+template <int ID>
+struct ConstTrackingDeleter {
+  ConstTrackingDeleter() : arg_type(&makeArgumentID<>()) {}
+
+  ConstTrackingDeleter(ConstTrackingDeleter const&)
+      : arg_type(&makeArgumentID<ConstTrackingDeleter const&>()) {}
+
+  ConstTrackingDeleter(ConstTrackingDeleter&&)
+      : arg_type(&makeArgumentID<ConstTrackingDeleter &&>()) {}
+
+  template <class T, class = EnableIfSpecialization<ConstTrackingDeleter, T> >
+  ConstTrackingDeleter(T&&) : arg_type(&makeArgumentID<T&&>()) {}
+
+  const ConstTrackingDeleter& operator=(ConstTrackingDeleter const&) const {
+    arg_type = &makeArgumentID<ConstTrackingDeleter const&>();
+    return *this;
+  }
+
+  const ConstTrackingDeleter& operator=(ConstTrackingDeleter &&) const {
+    arg_type = &makeArgumentID<ConstTrackingDeleter &&>();
+    return *this;
+  }
+
+  template <class T, class = EnableIfSpecialization<ConstTrackingDeleter, T> >
+  const ConstTrackingDeleter& operator=(T&&) const {
+    arg_type = &makeArgumentID<T&&>();
+    return *this;
+  }
+
+  void operator()(void*) const {}
+
+public:
+  TypeID const* reset() const {
+    TypeID const* tmp = arg_type;
+    arg_type = nullptr;
+    return tmp;
+  }
+
+  mutable TypeID const* arg_type;
+};
+
+template <class ExpectT, int ID>
+bool checkArg(TrackingDeleter<ID> const& d) {
+  return d.arg_type && *d.arg_type == makeArgumentID<ExpectT>();
+}
+
+template <class ExpectT, int ID>
+bool checkArg(ConstTrackingDeleter<ID> const& d) {
+  return d.arg_type && *d.arg_type == makeArgumentID<ExpectT>();
+}
+
+template <class From, bool AssignIsConst = false>
+struct AssignDeleter {
+  TEST_CONSTEXPR_CXX23 AssignDeleter()                     = default;
+  TEST_CONSTEXPR_CXX23 AssignDeleter(AssignDeleter const&) = default;
+  TEST_CONSTEXPR_CXX23 AssignDeleter(AssignDeleter&&)      = default;
+
+  AssignDeleter& operator=(AssignDeleter const&) = delete;
+  AssignDeleter& operator=(AssignDeleter &&) = delete;
+
+  template <class T> AssignDeleter& operator=(T&&) && = delete;
+  template <class T> AssignDeleter& operator=(T&&) const && = delete;
+
+  template <class T, class = typename std::enable_if< std::is_same<T&&, From>::value && !AssignIsConst >::type>
+  TEST_CONSTEXPR_CXX23 AssignDeleter& operator=(T&&) & {
+    return *this;
+  }
+
+  template <class T, class = typename std::enable_if< std::is_same<T&&, From>::value && AssignIsConst >::type>
+  TEST_CONSTEXPR_CXX23 const AssignDeleter& operator=(T&&) const& {
+    return *this;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX23 void operator()(T) const {}
+};
+
+template <class VT, class DDest, class DSource>
+TEST_CONSTEXPR_CXX23 void doDeleterTest() {
+  using U1 = std::unique_ptr<VT, DDest>;
+  using U2 = std::unique_ptr<VT, DSource>;
+  static_assert(std::is_nothrow_assignable<U1, U2&&>::value, "");
+  typename std::decay<DDest>::type ddest;
+  typename std::decay<DSource>::type dsource;
+  U1 u1(nullptr, ddest);
+  U2 u2(nullptr, dsource);
+  u1 = std::move(u2);
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+
+  { // Test that different non-reference deleter types are allowed so long
+    // as they convert to each other.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    static_assert(std::is_assignable<U1, U2&&>::value, "");
+  }
+  { // Test that different non-reference deleter types are disallowed when
+    // they cannot convert.
+    using U1 = std::unique_ptr<VT, GenericDeleter<0> >;
+    using U2 = std::unique_ptr<VT, GenericDeleter<1> >;
+    static_assert(!std::is_assignable<U1, U2&&>::value, "");
+  }
+  { // Test that if the deleter assignment is not valid the assignment operator
+    // SFINAEs.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> const& >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U3 = std::unique_ptr<VT, GenericConvertingDeleter<0> &>;
+    using U4 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    using U5 = std::unique_ptr<VT, GenericConvertingDeleter<1> const&>;
+    static_assert(!std::is_assignable<U1, U2&&>::value, "");
+    static_assert(!std::is_assignable<U1, U3&&>::value, "");
+    static_assert(!std::is_assignable<U1, U4&&>::value, "");
+    static_assert(!std::is_assignable<U1, U5&&>::value, "");
+
+    using U1C = std::unique_ptr<const VT, GenericConvertingDeleter<0> const&>;
+    static_assert(std::is_nothrow_assignable<U1C, U1&&>::value, "");
+  }
+  { // Test that if the deleter assignment is not valid the assignment operator
+    // SFINAEs.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> & >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U3 = std::unique_ptr<VT, GenericConvertingDeleter<0> &>;
+    using U4 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    using U5 = std::unique_ptr<VT, GenericConvertingDeleter<1> const&>;
+
+    static_assert(std::is_nothrow_assignable<U1, U2&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U1, U3&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U1, U4&&>::value, "");
+    static_assert(std::is_nothrow_assignable<U1, U5&&>::value, "");
+
+    using U1C = std::unique_ptr<const VT, GenericConvertingDeleter<0> &>;
+    static_assert(std::is_nothrow_assignable<U1C, U1&&>::value, "");
+  }
+  { // Test that non-reference destination deleters can be assigned
+    // from any source deleter type with a suitable conversion. Including
+    // reference types.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<0> &>;
+    using U3 = std::unique_ptr<VT, GenericConvertingDeleter<0> const &>;
+    using U4 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    using U5 = std::unique_ptr<VT, GenericConvertingDeleter<1> &>;
+    using U6 = std::unique_ptr<VT, GenericConvertingDeleter<1> const&>;
+    static_assert(std::is_assignable<U1, U2&&>::value, "");
+    static_assert(std::is_assignable<U1, U3&&>::value, "");
+    static_assert(std::is_assignable<U1, U4&&>::value, "");
+    static_assert(std::is_assignable<U1, U5&&>::value, "");
+    static_assert(std::is_assignable<U1, U6&&>::value, "");
+  }
+  /////////////////////////////////////////////////////////////////////////////
+  {
+    using Del = GenericDeleter<0>;
+    using AD = AssignDeleter<Del&&>;
+    using ADC = AssignDeleter<Del&&, /*AllowConstAssign*/true>;
+    doDeleterTest<VT, AD, Del>();
+    doDeleterTest<VT, AD&, Del>();
+    doDeleterTest<VT, ADC const&, Del>();
+  }
+  {
+    using Del = GenericDeleter<0>;
+    using AD = AssignDeleter<Del&>;
+    using ADC = AssignDeleter<Del&, /*AllowConstAssign*/true>;
+    doDeleterTest<VT, AD, Del&>();
+    doDeleterTest<VT, AD&, Del&>();
+    doDeleterTest<VT, ADC const&, Del&>();
+  }
+  {
+    using Del = GenericDeleter<0>;
+    using AD = AssignDeleter<Del const&>;
+    using ADC = AssignDeleter<Del const&, /*AllowConstAssign*/true>;
+    doDeleterTest<VT, AD, Del const&>();
+    doDeleterTest<VT, AD&, Del const&>();
+    doDeleterTest<VT, ADC const&, Del const&>();
+  }
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_noexcept() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  {
+    typedef std::unique_ptr<const VT> APtr;
+    typedef std::unique_ptr<VT> BPtr;
+    static_assert(std::is_nothrow_assignable<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<const VT, CDeleter<const VT> > APtr;
+    typedef std::unique_ptr<VT, CDeleter<VT> > BPtr;
+    static_assert(std::is_nothrow_assignable<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<const VT, NCDeleter<const VT>&> APtr;
+    typedef std::unique_ptr<VT, NCDeleter<const VT>&> BPtr;
+    static_assert(std::is_nothrow_assignable<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<const VT, const NCConstDeleter<const VT>&> APtr;
+    typedef std::unique_ptr<VT, const NCConstDeleter<const VT>&> BPtr;
+    static_assert(std::is_nothrow_assignable<APtr, BPtr>::value, "");
+  }
+}
+
+template <bool IsArray>
+void test_deleter_value_category() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  using TD1 = TrackingDeleter<1>;
+  using TD2 = TrackingDeleter<2>;
+  TD1 d1;
+  TD2 d2;
+  using CD1 = ConstTrackingDeleter<1>;
+  using CD2 = ConstTrackingDeleter<2>;
+  CD1 cd1;
+  CD2 cd2;
+
+  { // Test non-reference deleter conversions
+    using U1 = std::unique_ptr<VT, TD1 >;
+    using U2 = std::unique_ptr<VT, TD2 >;
+    U1 u1;
+    U2 u2;
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<TD2&&>(u1.get_deleter()));
+  }
+  { // Test assignment to non-const ref
+    using U1 = std::unique_ptr<VT, TD1& >;
+    using U2 = std::unique_ptr<VT, TD2 >;
+    U1 u1(nullptr, d1);
+    U2 u2;
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<TD2&&>(u1.get_deleter()));
+  }
+  { // Test assignment to const&.
+    using U1 = std::unique_ptr<VT, CD1 const& >;
+    using U2 = std::unique_ptr<VT, CD2 >;
+    U1 u1(nullptr, cd1);
+    U2 u2;
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<CD2&&>(u1.get_deleter()));
+  }
+
+  { // Test assignment from non-const ref
+    using U1 = std::unique_ptr<VT, TD1 >;
+    using U2 = std::unique_ptr<VT, TD2& >;
+    U1 u1;
+    U2 u2(nullptr, d2);
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<TD2&>(u1.get_deleter()));
+  }
+  { // Test assignment from const ref
+    using U1 = std::unique_ptr<VT, TD1 >;
+    using U2 = std::unique_ptr<VT, TD2 const& >;
+    U1 u1;
+    U2 u2(nullptr, d2);
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<TD2 const&>(u1.get_deleter()));
+  }
+
+  { // Test assignment from non-const ref
+    using U1 = std::unique_ptr<VT, TD1& >;
+    using U2 = std::unique_ptr<VT, TD2& >;
+    U1 u1(nullptr, d1);
+    U2 u2(nullptr, d2);
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<TD2&>(u1.get_deleter()));
+  }
+  { // Test assignment from const ref
+    using U1 = std::unique_ptr<VT, TD1& >;
+    using U2 = std::unique_ptr<VT, TD2 const& >;
+    U1 u1(nullptr, d1);
+    U2 u2(nullptr, d2);
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<TD2 const&>(u1.get_deleter()));
+  }
+
+  { // Test assignment from non-const ref
+    using U1 = std::unique_ptr<VT, CD1 const& >;
+    using U2 = std::unique_ptr<VT, CD2 & >;
+    U1 u1(nullptr, cd1);
+    U2 u2(nullptr, cd2);
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<CD2 &>(u1.get_deleter()));
+  }
+  { // Test assignment from const ref
+    using U1 = std::unique_ptr<VT, CD1 const& >;
+    using U2 = std::unique_ptr<VT, CD2 const& >;
+    U1 u1(nullptr, cd1);
+    U2 u2(nullptr, cd2);
+    u1.get_deleter().reset();
+    u1 = std::move(u2);
+    assert(checkArg<CD2 const&>(u1.get_deleter()));
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_sfinae</*IsArray*/false>();
+    test_noexcept<false>();
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      test_deleter_value_category<false>();
+  }
+  {
+    test_sfinae</*IsArray*/true>();
+    test_noexcept<true>();
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      test_deleter_value_category<true>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.runtime.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.runtime.pass.cpp
new file mode 100644
index 0000000..fbedba9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.runtime.pass.cpp
@@ -0,0 +1,123 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr converting move assignment
+
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+template <class APtr, class BPtr>
+void testAssign(APtr& aptr, BPtr& bptr) {
+  A* p = bptr.get();
+  assert(A::count == 2);
+  aptr = std::move(bptr);
+  assert(aptr.get() == p);
+  assert(bptr.get() == 0);
+  assert(A::count == 1);
+  assert(B::count == 1);
+}
+
+template <class LHS, class RHS>
+void checkDeleter(LHS& lhs, RHS& rhs, int LHSState, int RHSState) {
+  assert(lhs.get_deleter().state() == LHSState);
+  assert(rhs.get_deleter().state() == RHSState);
+}
+
+template <class T>
+struct NCConvertingDeleter {
+  NCConvertingDeleter() = default;
+  NCConvertingDeleter(NCConvertingDeleter const&) = delete;
+  NCConvertingDeleter(NCConvertingDeleter&&) = default;
+
+  template <class U>
+  NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
+
+  void operator()(T*) const {}
+};
+
+template <class T>
+struct NCConvertingDeleter<T[]> {
+  NCConvertingDeleter() = default;
+  NCConvertingDeleter(NCConvertingDeleter const&) = delete;
+  NCConvertingDeleter(NCConvertingDeleter&&) = default;
+
+  template <class U>
+  NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
+
+  void operator()(T*) const {}
+};
+
+struct GenericDeleter {
+  void operator()(void*) const;
+};
+
+struct NCGenericDeleter {
+  NCGenericDeleter() = default;
+  NCGenericDeleter(NCGenericDeleter const&) = delete;
+  NCGenericDeleter(NCGenericDeleter&&) = default;
+
+  void operator()(void*) const {}
+};
+
+void test_sfinae() {
+  using DA = NCConvertingDeleter<A[]>;        // non-copyable deleters
+  using DAC = NCConvertingDeleter<const A[]>; // non-copyable deleters
+
+  using UA = std::unique_ptr<A[]>;
+  using UAC = std::unique_ptr<const A[]>;
+  using UAD = std::unique_ptr<A[], DA>;
+  using UACD = std::unique_ptr<const A[], DAC>;
+
+  { // cannot move from an lvalue
+    static_assert(std::is_assignable<UAC, UA&&>::value, "");
+    static_assert(!std::is_assignable<UAC, UA&>::value, "");
+    static_assert(!std::is_assignable<UAC, const UA&>::value, "");
+  }
+  { // cannot move if the deleter-types cannot convert
+    static_assert(std::is_assignable<UACD, UAD&&>::value, "");
+    static_assert(!std::is_assignable<UACD, UAC&&>::value, "");
+    static_assert(!std::is_assignable<UAC, UACD&&>::value, "");
+  }
+  { // cannot move-convert with reference deleters of different types
+    using UA1 = std::unique_ptr<A[], DA&>;
+    using UA2 = std::unique_ptr<A[], DAC&>;
+    static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
+  }
+  { // cannot move-convert with reference deleters of different types
+    using UA1 = std::unique_ptr<A[], const DA&>;
+    using UA2 = std::unique_ptr<A[], const DAC&>;
+    static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
+  }
+  { // cannot move-convert from unique_ptr<Single>
+    using UA1 = std::unique_ptr<A[]>;
+    using UA2 = std::unique_ptr<A>;
+    static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
+  }
+  { // cannot move-convert from unique_ptr<Array[]>
+    using UA1 = std::unique_ptr<A[], NCGenericDeleter>;
+    using UA2 = std::unique_ptr<A, NCGenericDeleter>;
+    static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
+  }
+}
+
+int main(int, char**) {
+  test_sfinae();
+  // FIXME: add tests
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.single.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.single.pass.cpp
new file mode 100644
index 0000000..0201e9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/move_convert.single.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr converting move assignment
+
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "unique_ptr_test_helper.h"
+
+template <class APtr, class BPtr>
+TEST_CONSTEXPR_CXX23 void testAssign(APtr& aptr, BPtr& bptr) {
+  A* p = bptr.get();
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 2);
+  aptr = std::move(bptr);
+  assert(aptr.get() == p);
+  assert(bptr.get() == 0);
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 1);
+    assert(B::count == 1);
+  }
+}
+
+template <class LHS, class RHS>
+TEST_CONSTEXPR_CXX23 void checkDeleter(LHS& lhs, RHS& rhs, int LHSState, int RHSState) {
+  assert(lhs.get_deleter().state() == LHSState);
+  assert(rhs.get_deleter().state() == RHSState);
+}
+
+template <class T>
+struct NCConvertingDeleter {
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter()                      = default;
+  NCConvertingDeleter(NCConvertingDeleter const&) = delete;
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter&&) = default;
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(T*) const {}
+};
+
+template <class T>
+struct NCConvertingDeleter<T[]> {
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter()                      = default;
+  NCConvertingDeleter(NCConvertingDeleter const&) = delete;
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter&&) = default;
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(T*) const {}
+};
+
+struct NCGenericDeleter {
+  TEST_CONSTEXPR_CXX23 NCGenericDeleter()                   = default;
+  NCGenericDeleter(NCGenericDeleter const&) = delete;
+  TEST_CONSTEXPR_CXX23 NCGenericDeleter(NCGenericDeleter&&) = default;
+
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  using DA = NCConvertingDeleter<A>; // non-copyable deleters
+  using DB = NCConvertingDeleter<B>;
+  using UA = std::unique_ptr<A>;
+  using UB = std::unique_ptr<B>;
+  using UAD = std::unique_ptr<A, DA>;
+  using UBD = std::unique_ptr<B, DB>;
+  { // cannot move from an lvalue
+    static_assert(std::is_assignable<UA, UB&&>::value, "");
+    static_assert(!std::is_assignable<UA, UB&>::value, "");
+    static_assert(!std::is_assignable<UA, const UB&>::value, "");
+  }
+  { // cannot move if the deleter-types cannot convert
+    static_assert(std::is_assignable<UAD, UBD&&>::value, "");
+    static_assert(!std::is_assignable<UAD, UB&&>::value, "");
+    static_assert(!std::is_assignable<UA, UBD&&>::value, "");
+  }
+  { // cannot move-convert with reference deleters of different types
+    using UA1 = std::unique_ptr<A, DA&>;
+    using UB1 = std::unique_ptr<B, DB&>;
+    static_assert(!std::is_assignable<UA1, UB1&&>::value, "");
+  }
+  { // cannot move-convert with reference deleters of different types
+    using UA1 = std::unique_ptr<A, const DA&>;
+    using UB1 = std::unique_ptr<B, const DB&>;
+    static_assert(!std::is_assignable<UA1, UB1&&>::value, "");
+  }
+  { // cannot move-convert from unique_ptr<Array[]>
+    using UA1 = std::unique_ptr<A>;
+    using UA2 = std::unique_ptr<A[]>;
+    using UB1 = std::unique_ptr<B[]>;
+    static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
+    static_assert(!std::is_assignable<UA1, UB1&&>::value, "");
+  }
+  { // cannot move-convert from unique_ptr<Array[]>
+    using UA1 = std::unique_ptr<A, NCGenericDeleter>;
+    using UA2 = std::unique_ptr<A[], NCGenericDeleter>;
+    using UB1 = std::unique_ptr<B[], NCGenericDeleter>;
+    static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
+    static_assert(!std::is_assignable<UA1, UB1&&>::value, "");
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_sfinae();
+  {
+    std::unique_ptr<B> bptr(new B);
+    std::unique_ptr<A> aptr(new A);
+    testAssign(aptr, bptr);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+  {
+    Deleter<B> del(42);
+    std::unique_ptr<B, Deleter<B> > bptr(new B, std::move(del));
+    std::unique_ptr<A, Deleter<A> > aptr(new A);
+    testAssign(aptr, bptr);
+    checkDeleter(aptr, bptr, 42, 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+  {
+    CDeleter<A> adel(6);
+    CDeleter<B> bdel(42);
+    std::unique_ptr<B, CDeleter<B>&> bptr(new B, bdel);
+    std::unique_ptr<A, CDeleter<A>&> aptr(new A, adel);
+    testAssign(aptr, bptr);
+    checkDeleter(aptr, bptr, 42, 42);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/null.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/null.pass.cpp
new file mode 100644
index 0000000..f2e3f6b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/null.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr move assignment
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+// test assignment from null
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 5 : 1;
+  {
+    std::unique_ptr<VT> s2(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    s2 = NULL;
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+    assert(s2.get() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/nullptr.pass.cpp
new file mode 100644
index 0000000..e69973a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.asgn/nullptr.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr move assignment
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+// test assignment from null
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 5 : 1;
+  {
+    std::unique_ptr<VT> s2(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    s2 = nullptr;
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+    assert(s2.get() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/auto_pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/auto_pointer.pass.cpp
new file mode 100644
index 0000000..587715a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/auto_pointer.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// libc++ cannot safely provide the auto_ptr constructor without rvalue
+// references.
+// REQUIRES: c++11 || c++14
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+
+// <memory>
+
+// unique_ptr
+
+// template <class U> unique_ptr(auto_ptr<U>&&) noexcept
+
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {
+  static int count;
+  A() { ++count; }
+  A(const A&) { ++count; }
+  virtual ~A() { --count; }
+};
+
+int A::count = 0;
+
+struct B : public A {
+  static int count;
+  B() { ++count; }
+  B(const B& b) : A(b) { ++count; }
+  virtual ~B() { --count; }
+};
+
+int B::count = 0;
+
+struct C {};
+
+struct Deleter {
+  void operator()(void*) {}
+};
+
+void test_sfinae() {
+  {
+    // the auto_ptr constructor should be disable with a non-default deleter.
+    using AP = std::auto_ptr<int>;
+    using U = std::unique_ptr<int, Deleter>;
+    static_assert(!std::is_constructible<U, AP&&>::value, "");
+  }
+  {
+    // the auto_ptr constructor should be disabled when the pointer types are incompatible.
+    using AP = std::auto_ptr<A>;
+    using U = std::unique_ptr<C>;
+    static_assert(!std::is_constructible<U, AP&&>::value, "");
+  }
+}
+
+int main(int, char**) {
+  {
+    B* p = new B;
+    std::auto_ptr<B> ap(p);
+    std::unique_ptr<A> up(std::move(ap));
+    assert(up.get() == p);
+    assert(ap.get() == 0);
+    assert(A::count == 1);
+    assert(B::count == 1);
+  }
+  assert(A::count == 0);
+  assert(B::count == 0);
+  {
+    B* p = new B;
+    std::auto_ptr<B> ap(p);
+    std::unique_ptr<A> up;
+    up = std::move(ap);
+    assert(up.get() == p);
+    assert(ap.get() == 0);
+    assert(A::count == 1);
+    assert(B::count == 1);
+  }
+  assert(A::count == 0);
+  assert(B::count == 0);
+#if TEST_STD_VER >= 11
+  {
+    static_assert(std::is_nothrow_constructible<std::unique_ptr<A>,
+                                                std::auto_ptr<B>&&>::value,
+                  "");
+  }
+#endif
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/deduct.pass.cpp
new file mode 100644
index 0000000..c6fef01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/deduct.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory>
+
+// unique_ptr
+
+// The following constructors should not be selected by class template argument
+// deduction:
+//
+// constexpr explicit unique_ptr(pointer p) // constexpr since C++23
+// constexpr unique_ptr(pointer p, const D& d) noexcept // constexpr since C++23
+// constexpr unique_ptr(pointer p, remove_reference_t<D>&& d) noexcept // constexpr since C++23
+
+#include <memory>
+
+#include "deduction_guides_sfinae_checks.h"
+
+struct Deleter {
+  void operator()(int* p) const { delete p; }
+};
+
+int main(int, char**) {
+  // Cannot deduce from (ptr).
+  static_assert(SFINAEs_away<std::unique_ptr, int*>);
+  // Cannot deduce from (array).
+  static_assert(SFINAEs_away<std::unique_ptr, int[]>);
+  // Cannot deduce from (ptr, Deleter&&).
+  static_assert(SFINAEs_away<std::unique_ptr, int*, Deleter&&>);
+  // Cannot deduce from (array, Deleter&&).
+  static_assert(SFINAEs_away<std::unique_ptr, int[], Deleter&&>);
+  // Cannot deduce from (ptr, const Deleter&).
+  static_assert(SFINAEs_away<std::unique_ptr, int*, const Deleter&>);
+  // Cannot deduce from (array, const Deleter&).
+  static_assert(SFINAEs_away<std::unique_ptr, int[], const Deleter&>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/default.pass.cpp
new file mode 100644
index 0000000..7f4c909
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/default.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+//=============================================================================
+// TESTING std::unique_ptr::unique_ptr()
+//
+// Concerns:
+//   1 The default constructor works for any default constructible deleter types.
+//   2 The stored type 'T' is allowed to be incomplete.
+//
+// Plan
+//  1 Default construct unique_ptr's with various deleter types (C-1)
+//  2 Default construct a unique_ptr with an incomplete element_type and
+//    various deleter types (C-1,2)
+
+#include <memory>
+#include <cassert>
+#include "test_macros.h"
+
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "unique_ptr_test_helper.h"
+
+#if TEST_STD_VER >= 11
+TEST_CONSTINIT std::unique_ptr<int> global_static_unique_ptr_single;
+TEST_CONSTINIT std::unique_ptr<int[]> global_static_unique_ptr_runtime;
+
+struct NonDefaultDeleter {
+  NonDefaultDeleter() = delete;
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+#endif
+
+template <class ElemType>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+#if TEST_STD_VER >= 11
+  { // the constructor does not participate in overload resolution when
+    // the deleter is a pointer type
+    using U = std::unique_ptr<ElemType, void (*)(void*)>;
+    static_assert(!std::is_default_constructible<U>::value, "");
+  }
+  { // the constructor does not participate in overload resolution when
+    // the deleter is not default constructible
+    using Del = CDeleter<ElemType>;
+    using U1  = std::unique_ptr<ElemType, NonDefaultDeleter>;
+    using U2  = std::unique_ptr<ElemType, Del&>;
+    using U3  = std::unique_ptr<ElemType, Del const&>;
+    static_assert(!std::is_default_constructible<U1>::value, "");
+    static_assert(!std::is_default_constructible<U2>::value, "");
+    static_assert(!std::is_default_constructible<U3>::value, "");
+  }
+#endif
+}
+
+template <class ElemType>
+TEST_CONSTEXPR_CXX23 bool test_basic() {
+#if TEST_STD_VER >= 11
+  {
+    using U1 = std::unique_ptr<ElemType>;
+    using U2 = std::unique_ptr<ElemType, Deleter<ElemType> >;
+    static_assert(std::is_nothrow_default_constructible<U1>::value, "");
+    static_assert(std::is_nothrow_default_constructible<U2>::value, "");
+  }
+#endif
+  {
+    std::unique_ptr<ElemType> p;
+    assert(p.get() == 0);
+  }
+  {
+    std::unique_ptr<ElemType, NCDeleter<ElemType> > p;
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 0);
+    p.get_deleter().set_state(5);
+    assert(p.get_deleter().state() == 5);
+  }
+  {
+    std::unique_ptr<ElemType, DefaultCtorDeleter<ElemType> > p;
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 0);
+  }
+
+  return true;
+}
+
+DEFINE_AND_RUN_IS_INCOMPLETE_TEST({
+  doIncompleteTypeTest(0);
+  doIncompleteTypeTest<IncompleteType, Deleter<IncompleteType> >(0);
+} {
+  doIncompleteTypeTest<IncompleteType[]>(0);
+  doIncompleteTypeTest<IncompleteType[], Deleter<IncompleteType[]> >(0);
+})
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_sfinae<int>();
+    test_basic<int>();
+  }
+  {
+    test_sfinae<int[]>();
+    test_basic<int[]>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move.pass.cpp
new file mode 100644
index 0000000..318f4b1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move.pass.cpp
@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr move ctor
+
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+//=============================================================================
+// TESTING unique_ptr(unique_ptr&&)
+//
+// Concerns
+//   1 The moved from pointer is empty and the new pointer stores the old value.
+//   2 The only requirement on the deleter is that it is MoveConstructible
+//     or a reference.
+//   3 The constructor works for explicitly moved values (i.e. std::move(x))
+//   4 The constructor works for true temporaries (e.g. a return value)
+//
+// Plan
+//  1 Explicitly construct unique_ptr<T, D> for various deleter types 'D'.
+//    check that the value and deleter have been properly moved. (C-1,2,3)
+//
+//  2 Use the expression 'sink(source())' to move construct a unique_ptr<T, D>
+//    from a temporary. 'source' should return the unique_ptr by value and
+//    'sink' should accept the unique_ptr by value. (C-1,2,4)
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 std::unique_ptr<VT> source1() {
+  return std::unique_ptr<VT>(newValue<VT>(1));
+}
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 std::unique_ptr<VT, Deleter<VT> > source2() {
+  return std::unique_ptr<VT, Deleter<VT> >(newValue<VT>(1), Deleter<VT>(5));
+}
+
+template <class VT>
+std::unique_ptr<VT, NCDeleter<VT>&> source3() {
+  static NCDeleter<VT> d(5);
+  return std::unique_ptr<VT, NCDeleter<VT>&>(newValue<VT>(1), d);
+}
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void sink1(std::unique_ptr<VT> p) {
+  assert(p.get() != nullptr);
+}
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void sink2(std::unique_ptr<VT, Deleter<VT> > p) {
+  assert(p.get() != nullptr);
+  assert(p.get_deleter().state() == 5);
+}
+
+template <class VT>
+void sink3(std::unique_ptr<VT, NCDeleter<VT>&> p) {
+  assert(p.get() != nullptr);
+  assert(p.get_deleter().state() == 5);
+  assert(&p.get_deleter() == &source3<VT>().get_deleter());
+}
+
+template <class ValueT>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  typedef std::unique_ptr<ValueT> U;
+  { // Ensure unique_ptr is non-copyable
+    static_assert((!std::is_constructible<U, U const&>::value), "");
+    static_assert((!std::is_constructible<U, U&>::value), "");
+  }
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<!IsArray, A, A[]>::type VT;
+  const int expect_alive = IsArray ? 5 : 1;
+  {
+    typedef std::unique_ptr<VT> APtr;
+    APtr s(newValue<VT>(expect_alive));
+    A* p = s.get();
+    APtr s2 = std::move(s);
+    assert(s2.get() == p);
+    assert(s.get() == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    typedef Deleter<VT> MoveDel;
+    typedef std::unique_ptr<VT, MoveDel> APtr;
+    MoveDel d(5);
+    APtr s(newValue<VT>(expect_alive), std::move(d));
+    assert(d.state() == 0);
+    assert(s.get_deleter().state() == 5);
+    A* p = s.get();
+    APtr s2 = std::move(s);
+    assert(s2.get() == p);
+    assert(s.get() == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(s2.get_deleter().state() == 5);
+    assert(s.get_deleter().state() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    typedef NCDeleter<VT> NonCopyDel;
+    typedef std::unique_ptr<VT, NonCopyDel&> APtr;
+
+    NonCopyDel d;
+    APtr s(newValue<VT>(expect_alive), d);
+    A* p = s.get();
+    APtr s2 = std::move(s);
+    assert(s2.get() == p);
+    assert(s.get() == 0);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    d.set_state(6);
+    assert(s2.get_deleter().state() == d.state());
+    assert(s.get_deleter().state() == d.state());
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    sink1<VT>(source1<VT>());
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+    sink2<VT>(source2<VT>());
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void test_noexcept() {
+#if TEST_STD_VER >= 11
+  {
+    typedef std::unique_ptr<VT> U;
+    static_assert(std::is_nothrow_move_constructible<U>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, Deleter<VT> > U;
+    static_assert(std::is_nothrow_move_constructible<U>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, NCDeleter<VT> &> U;
+    static_assert(std::is_nothrow_move_constructible<U>::value, "");
+  }
+  {
+    typedef std::unique_ptr<VT, const NCConstDeleter<VT> &> U;
+    static_assert(std::is_nothrow_move_constructible<U>::value, "");
+  }
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_basic</*IsArray*/ false>();
+    test_sfinae<int>();
+    test_noexcept<int>();
+  }
+  {
+    test_basic</*IsArray*/ true>();
+    test_sfinae<int[]>();
+    test_noexcept<int[]>();
+  }
+
+  return true;
+}
+
+template <bool IsArray>
+void test_sink3() {
+  typedef typename std::conditional<!IsArray, A, A[]>::type VT;
+  sink3<VT>(source3<VT>());
+  assert(A::count == 0);
+}
+
+int main(int, char**) {
+  test_sink3</*IsArray*/ false>();
+  test_sink3</*IsArray*/ true>();
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.pass.cpp
new file mode 100644
index 0000000..3a86862
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.pass.cpp
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr converting move ctor
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "type_id.h"
+#include "unique_ptr_test_helper.h"
+
+template <int ID = 0>
+struct GenericDeleter {
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+
+template <int ID = 0>
+struct GenericConvertingDeleter {
+  template <int OID>
+  TEST_CONSTEXPR_CXX23 GenericConvertingDeleter(GenericConvertingDeleter<OID>) {}
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+
+template <class Templ, class Other>
+struct is_specialization;
+
+template <template <int> class Templ, int ID1, class Other>
+struct is_specialization<Templ<ID1>, Other> : std::false_type {};
+
+template <template <int> class Templ, int ID1, int ID2>
+struct is_specialization<Templ<ID1>, Templ<ID2> > : std::true_type {};
+
+template <class Templ, class Other>
+using EnableIfSpecialization = typename std::enable_if<
+    is_specialization<Templ, typename std::decay<Other>::type >::value
+  >::type;
+
+
+template <int ID>
+struct TrackingDeleter {
+  TEST_CONSTEXPR_CXX23 TrackingDeleter() : arg_type(&makeArgumentID<>()) {}
+
+  TEST_CONSTEXPR_CXX23 TrackingDeleter(TrackingDeleter const&) : arg_type(&makeArgumentID<TrackingDeleter const&>()) {}
+
+  TEST_CONSTEXPR_CXX23 TrackingDeleter(TrackingDeleter&&) : arg_type(&makeArgumentID<TrackingDeleter&&>()) {}
+
+  template <class T, class = EnableIfSpecialization<TrackingDeleter, T> >
+  TEST_CONSTEXPR_CXX23 TrackingDeleter(T&&) : arg_type(&makeArgumentID<T&&>()) {}
+
+  TEST_CONSTEXPR_CXX23 TrackingDeleter& operator=(TrackingDeleter const&) {
+    arg_type = &makeArgumentID<TrackingDeleter const&>();
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 TrackingDeleter& operator=(TrackingDeleter&&) {
+    arg_type = &makeArgumentID<TrackingDeleter &&>();
+    return *this;
+  }
+
+  template <class T, class = EnableIfSpecialization<TrackingDeleter, T> >
+  TEST_CONSTEXPR_CXX23 TrackingDeleter& operator=(T&&) {
+    arg_type = &makeArgumentID<T&&>();
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+
+public:
+  TEST_CONSTEXPR_CXX23 TypeID const* reset() const {
+    TypeID const* tmp = arg_type;
+    arg_type = nullptr;
+    return tmp;
+  }
+
+  mutable TypeID const* arg_type;
+};
+
+
+template <class ExpectT, int ID>
+bool checkArg(TrackingDeleter<ID> const& d) {
+  return d.arg_type && *d.arg_type == makeArgumentID<ExpectT>();
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+
+  { // Test that different non-reference deleter types are allowed so long
+    // as they convert to each other.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    static_assert(std::is_constructible<U1, U2&&>::value, "");
+  }
+  { // Test that different non-reference deleter types are disallowed when
+    // they cannot convert.
+    using U1 = std::unique_ptr<VT, GenericDeleter<0> >;
+    using U2 = std::unique_ptr<VT, GenericDeleter<1> >;
+    static_assert(!std::is_constructible<U1, U2&&>::value, "");
+  }
+  { // Test that if the destination deleter is a reference type then only
+    // exact matches are allowed.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> const& >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U3 = std::unique_ptr<VT, GenericConvertingDeleter<0> &>;
+    using U4 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    using U5 = std::unique_ptr<VT, GenericConvertingDeleter<1> const&>;
+    static_assert(!std::is_constructible<U1, U2&&>::value, "");
+    static_assert(!std::is_constructible<U1, U3&&>::value, "");
+    static_assert(!std::is_constructible<U1, U4&&>::value, "");
+    static_assert(!std::is_constructible<U1, U5&&>::value, "");
+
+    using U1C = std::unique_ptr<const VT, GenericConvertingDeleter<0> const&>;
+    static_assert(std::is_nothrow_constructible<U1C, U1&&>::value, "");
+  }
+  { // Test that non-reference destination deleters can be constructed
+    // from any source deleter type with a suitable conversion. Including
+    // reference types.
+    using U1 = std::unique_ptr<VT, GenericConvertingDeleter<0> >;
+    using U2 = std::unique_ptr<VT, GenericConvertingDeleter<0> &>;
+    using U3 = std::unique_ptr<VT, GenericConvertingDeleter<0> const &>;
+    using U4 = std::unique_ptr<VT, GenericConvertingDeleter<1> >;
+    using U5 = std::unique_ptr<VT, GenericConvertingDeleter<1> &>;
+    using U6 = std::unique_ptr<VT, GenericConvertingDeleter<1> const&>;
+    static_assert(std::is_constructible<U1, U2&&>::value, "");
+    static_assert(std::is_constructible<U1, U3&&>::value, "");
+    static_assert(std::is_constructible<U1, U4&&>::value, "");
+    static_assert(std::is_constructible<U1, U5&&>::value, "");
+    static_assert(std::is_constructible<U1, U6&&>::value, "");
+  }
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_noexcept() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  {
+    typedef std::unique_ptr<const VT> APtr;
+    typedef std::unique_ptr<VT> BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<const VT, CDeleter<const VT> > APtr;
+    typedef std::unique_ptr<VT, CDeleter<VT> > BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<const VT, NCDeleter<const VT>&> APtr;
+    typedef std::unique_ptr<VT, NCDeleter<const VT>&> BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<const VT, const NCConstDeleter<const VT>&> APtr;
+    typedef std::unique_ptr<VT, const NCConstDeleter<const VT>&> BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_deleter_value_category() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  using TD1 = TrackingDeleter<1>;
+  using TD2 = TrackingDeleter<2>;
+  TD1 d1;
+  TD2 d2;
+
+  { // Test non-reference deleter conversions
+    using U1 = std::unique_ptr<VT, TD1 >;
+    using U2 = std::unique_ptr<VT, TD2 >;
+    U2 u2;
+    u2.get_deleter().reset();
+    U1 u1(std::move(u2));
+    assert(checkArg<TD2&&>(u1.get_deleter()));
+  }
+  { // Test assignment from non-const ref
+    using U1 = std::unique_ptr<VT, TD1 >;
+    using U2 = std::unique_ptr<VT, TD2& >;
+    U2 u2(nullptr, d2);
+    U1 u1(std::move(u2));
+    assert(checkArg<TD2&>(u1.get_deleter()));
+  }
+  { // Test assignment from const ref
+    using U1 = std::unique_ptr<VT, TD1 >;
+    using U2 = std::unique_ptr<VT, TD2 const& >;
+    U2 u2(nullptr, d2);
+    U1 u1(std::move(u2));
+    assert(checkArg<TD2 const&>(u1.get_deleter()));
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_sfinae</*IsArray*/false>();
+    test_noexcept<false>();
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      test_deleter_value_category<false>();
+  }
+  {
+    test_sfinae</*IsArray*/true>();
+    test_noexcept<true>();
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      test_deleter_value_category<true>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.runtime.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.runtime.pass.cpp
new file mode 100644
index 0000000..2bd6f75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.runtime.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr converting move ctor
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "unique_ptr_test_helper.h"
+
+template <int ID = 0>
+struct GenericDeleter {
+  void operator()(void*) const {}
+};
+
+template <int ID = 0>
+struct GenericConvertingDeleter {
+  template <int OID>
+  GenericConvertingDeleter(GenericConvertingDeleter<OID>) {}
+  void operator()(void*) const {}
+};
+
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  { // Disallow copying
+    using U1 = std::unique_ptr<A[], GenericConvertingDeleter<0> >;
+    using U2 = std::unique_ptr<A[], GenericConvertingDeleter<1> >;
+    static_assert(std::is_constructible<U1, U2&&>::value, "");
+    static_assert(!std::is_constructible<U1, U2&>::value, "");
+    static_assert(!std::is_constructible<U1, const U2&>::value, "");
+    static_assert(!std::is_constructible<U1, const U2&&>::value, "");
+  }
+  { // Disallow illegal qualified conversions
+    using U1 = std::unique_ptr<const A[]>;
+    using U2 = std::unique_ptr<A[]>;
+    static_assert(std::is_constructible<U1, U2&&>::value, "");
+    static_assert(!std::is_constructible<U2, U1&&>::value, "");
+  }
+  { // Disallow base-to-derived conversions.
+    using UA = std::unique_ptr<A[]>;
+    using UB = std::unique_ptr<B[]>;
+    static_assert(!std::is_constructible<UA, UB&&>::value, "");
+  }
+  { // Disallow base-to-derived conversions.
+    using UA = std::unique_ptr<A[], GenericConvertingDeleter<0> >;
+    using UB = std::unique_ptr<B[], GenericConvertingDeleter<1> >;
+    static_assert(!std::is_constructible<UA, UB&&>::value, "");
+  }
+  { // Disallow invalid deleter initialization
+    using U1 = std::unique_ptr<A[], GenericDeleter<0> >;
+    using U2 = std::unique_ptr<A[], GenericDeleter<1> >;
+    static_assert(!std::is_constructible<U1, U2&&>::value, "");
+  }
+  { // Disallow reference deleters with different qualifiers
+    using U1 = std::unique_ptr<A[], Deleter<A[]>&>;
+    using U2 = std::unique_ptr<A[], const Deleter<A[]>&>;
+    static_assert(!std::is_constructible<U1, U2&&>::value, "");
+    static_assert(!std::is_constructible<U2, U1&&>::value, "");
+  }
+  {
+    using U1 = std::unique_ptr<A[]>;
+    using U2 = std::unique_ptr<A>;
+    static_assert(!std::is_constructible<U1, U2&&>::value, "");
+    static_assert(!std::is_constructible<U2, U1&&>::value, "");
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_sfinae();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.single.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.single.pass.cpp
new file mode 100644
index 0000000..13d40b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/move_convert.single.pass.cpp
@@ -0,0 +1,262 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Test unique_ptr converting move ctor
+
+// NOTE: unique_ptr does not provide converting constructors in C++03
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+// test converting move ctor.  Should only require a MoveConstructible deleter, or if
+//    deleter is a reference, not even that.
+// Explicit version
+
+template <class LHS, class RHS>
+TEST_CONSTEXPR_CXX23 void checkReferenceDeleter(LHS& lhs, RHS& rhs) {
+  typedef typename LHS::deleter_type NewDel;
+  static_assert(std::is_reference<NewDel>::value, "");
+  rhs.get_deleter().set_state(42);
+  assert(rhs.get_deleter().state() == 42);
+  assert(lhs.get_deleter().state() == 42);
+  lhs.get_deleter().set_state(99);
+  assert(lhs.get_deleter().state() == 99);
+  assert(rhs.get_deleter().state() == 99);
+}
+
+template <class LHS, class RHS>
+TEST_CONSTEXPR_CXX23 void checkDeleter(LHS& lhs, RHS& rhs, int LHSVal, int RHSVal) {
+  assert(lhs.get_deleter().state() == LHSVal);
+  assert(rhs.get_deleter().state() == RHSVal);
+}
+
+template <class LHS, class RHS>
+TEST_CONSTEXPR_CXX23 void checkCtor(LHS& lhs, RHS& rhs, A* RHSVal) {
+  assert(lhs.get() == RHSVal);
+  assert(rhs.get() == nullptr);
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 1);
+    assert(B::count == 1);
+  }
+}
+
+TEST_CONSTEXPR_CXX23 void checkNoneAlive() {
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+}
+
+template <class T>
+struct NCConvertingDeleter {
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter()                      = default;
+  NCConvertingDeleter(NCConvertingDeleter const&) = delete;
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter&&) = default;
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(T*) const {}
+};
+
+template <class T>
+struct NCConvertingDeleter<T[]> {
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter()                      = default;
+  NCConvertingDeleter(NCConvertingDeleter const&) = delete;
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter&&) = default;
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23 NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(T*) const {}
+};
+
+struct NCGenericDeleter {
+  TEST_CONSTEXPR_CXX23 NCGenericDeleter()                   = default;
+  NCGenericDeleter(NCGenericDeleter const&) = delete;
+  TEST_CONSTEXPR_CXX23 NCGenericDeleter(NCGenericDeleter&&) = default;
+
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+  using DA = NCConvertingDeleter<A>; // non-copyable deleters
+  using DB = NCConvertingDeleter<B>;
+  using UA = std::unique_ptr<A>;
+  using UB = std::unique_ptr<B>;
+  using UAD = std::unique_ptr<A, DA>;
+  using UBD = std::unique_ptr<B, DB>;
+  { // cannot move from an lvalue
+    static_assert(std::is_constructible<UA, UB&&>::value, "");
+    static_assert(!std::is_constructible<UA, UB&>::value, "");
+    static_assert(!std::is_constructible<UA, const UB&>::value, "");
+  }
+  { // cannot move if the deleter-types cannot convert
+    static_assert(std::is_constructible<UAD, UBD&&>::value, "");
+    static_assert(!std::is_constructible<UAD, UB&&>::value, "");
+    static_assert(!std::is_constructible<UA, UBD&&>::value, "");
+  }
+  { // cannot move-convert with reference deleters of different types
+    using UA1 = std::unique_ptr<A, DA&>;
+    using UB1 = std::unique_ptr<B, DB&>;
+    static_assert(!std::is_constructible<UA1, UB1&&>::value, "");
+  }
+  { // cannot move-convert with reference deleters of different types
+    using UA1 = std::unique_ptr<A, const DA&>;
+    using UB1 = std::unique_ptr<B, const DB&>;
+    static_assert(!std::is_constructible<UA1, UB1&&>::value, "");
+  }
+  { // cannot move-convert from unique_ptr<Array[]>
+    using UA1 = std::unique_ptr<A>;
+    using UA2 = std::unique_ptr<A[]>;
+    using UB1 = std::unique_ptr<B[]>;
+    static_assert(!std::is_constructible<UA1, UA2&&>::value, "");
+    static_assert(!std::is_constructible<UA1, UB1&&>::value, "");
+  }
+  { // cannot move-convert from unique_ptr<Array[]>
+    using UA1 = std::unique_ptr<A, NCGenericDeleter>;
+    using UA2 = std::unique_ptr<A[], NCGenericDeleter>;
+    using UB1 = std::unique_ptr<B[], NCGenericDeleter>;
+    static_assert(!std::is_constructible<UA1, UA2&&>::value, "");
+    static_assert(!std::is_constructible<UA1, UB1&&>::value, "");
+  }
+}
+
+TEST_CONSTEXPR_CXX23 void test_noexcept() {
+  {
+    typedef std::unique_ptr<A> APtr;
+    typedef std::unique_ptr<B> BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<A, Deleter<A> > APtr;
+    typedef std::unique_ptr<B, Deleter<B> > BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<A, NCDeleter<A>&> APtr;
+    typedef std::unique_ptr<B, NCDeleter<A>&> BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+  {
+    typedef std::unique_ptr<A, const NCConstDeleter<A>&> APtr;
+    typedef std::unique_ptr<B, const NCConstDeleter<A>&> BPtr;
+    static_assert(std::is_nothrow_constructible<APtr, BPtr>::value, "");
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_sfinae();
+    test_noexcept();
+  }
+  {
+    typedef std::unique_ptr<A> APtr;
+    typedef std::unique_ptr<B> BPtr;
+    { // explicit
+      BPtr b(new B);
+      A* p = b.get();
+      APtr a(std::move(b));
+      checkCtor(a, b, p);
+    }
+    checkNoneAlive();
+    { // implicit
+      BPtr b(new B);
+      A* p = b.get();
+      APtr a = std::move(b);
+      checkCtor(a, b, p);
+    }
+    checkNoneAlive();
+  }
+  { // test with moveable deleters
+    typedef std::unique_ptr<A, Deleter<A> > APtr;
+    typedef std::unique_ptr<B, Deleter<B> > BPtr;
+    {
+      Deleter<B> del(5);
+      BPtr b(new B, std::move(del));
+      A* p = b.get();
+      APtr a(std::move(b));
+      checkCtor(a, b, p);
+      checkDeleter(a, b, 5, 0);
+    }
+    checkNoneAlive();
+    {
+      Deleter<B> del(5);
+      BPtr b(new B, std::move(del));
+      A* p = b.get();
+      APtr a = std::move(b);
+      checkCtor(a, b, p);
+      checkDeleter(a, b, 5, 0);
+    }
+    checkNoneAlive();
+  }
+  { // test with reference deleters
+    typedef std::unique_ptr<A, NCDeleter<A>&> APtr;
+    typedef std::unique_ptr<B, NCDeleter<A>&> BPtr;
+    NCDeleter<A> del(5);
+    {
+      BPtr b(new B, del);
+      A* p = b.get();
+      APtr a(std::move(b));
+      checkCtor(a, b, p);
+      checkReferenceDeleter(a, b);
+    }
+    checkNoneAlive();
+    {
+      BPtr b(new B, del);
+      A* p = b.get();
+      APtr a = std::move(b);
+      checkCtor(a, b, p);
+      checkReferenceDeleter(a, b);
+    }
+    checkNoneAlive();
+  }
+  {
+    typedef std::unique_ptr<A, CDeleter<A> > APtr;
+    typedef std::unique_ptr<B, CDeleter<B>&> BPtr;
+    CDeleter<B> del(5);
+    {
+      BPtr b(new B, del);
+      A* p = b.get();
+      APtr a(std::move(b));
+      checkCtor(a, b, p);
+      checkDeleter(a, b, 5, 5);
+    }
+    checkNoneAlive();
+    {
+      BPtr b(new B, del);
+      A* p = b.get();
+      APtr a = std::move(b);
+      checkCtor(a, b, p);
+      checkDeleter(a, b, 5, 5);
+    }
+    checkNoneAlive();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/null.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/null.pass.cpp
new file mode 100644
index 0000000..51e5ec7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/null.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <memory>
+
+// unique_ptr
+
+// FIXME(EricWF): This test contains tests for constructing a unique_ptr from NULL.
+// The behavior demonstrated in this test is not meant to be standard; It simply
+// tests the current status quo in libc++.
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void test_pointer_ctor() {
+  {
+    std::unique_ptr<VT> p(0);
+    assert(p.get() == 0);
+  }
+  {
+    std::unique_ptr<VT, Deleter<VT> > p(0);
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 0);
+  }
+}
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void test_pointer_deleter_ctor() {
+  {
+    std::default_delete<VT> d;
+    std::unique_ptr<VT> p(0, d);
+    assert(p.get() == 0);
+  }
+  {
+    std::unique_ptr<VT, Deleter<VT> > p(0, Deleter<VT>(5));
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 5);
+  }
+  {
+    NCDeleter<VT> d(5);
+    std::unique_ptr<VT, NCDeleter<VT>&> p(0, d);
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 5);
+  }
+  {
+    NCConstDeleter<VT> d(5);
+    std::unique_ptr<VT, NCConstDeleter<VT> const&> p(0, d);
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 5);
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    // test_pointer_ctor<int>();
+    test_pointer_deleter_ctor<int>();
+  }
+  {
+    test_pointer_ctor<int[]>();
+    test_pointer_deleter_ctor<int[]>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/nullptr.pass.cpp
new file mode 100644
index 0000000..45017a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/nullptr.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// constexpr unique_ptr(nullptr_t);  // constexpr since C++23
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+#if TEST_STD_VER >= 11
+TEST_CONSTINIT std::unique_ptr<int> global_static_unique_ptr_single(nullptr);
+TEST_CONSTINIT std::unique_ptr<int[]> global_static_unique_ptr_runtime(nullptr);
+
+struct NonDefaultDeleter {
+  NonDefaultDeleter() = delete;
+  void operator()(void*) const {}
+};
+#endif
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+#if TEST_STD_VER >= 11
+  {
+    using U1 = std::unique_ptr<VT>;
+    using U2 = std::unique_ptr<VT, Deleter<VT> >;
+    static_assert(std::is_nothrow_constructible<U1, decltype(nullptr)>::value, "");
+    static_assert(std::is_nothrow_constructible<U2, decltype(nullptr)>::value, "");
+  }
+#endif
+  {
+    std::unique_ptr<VT> p(nullptr);
+    assert(p.get() == 0);
+  }
+  {
+    std::unique_ptr<VT, NCDeleter<VT> > p(nullptr);
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 0);
+  }
+  {
+    std::unique_ptr<VT, DefaultCtorDeleter<VT> > p(nullptr);
+    assert(p.get() == 0);
+    assert(p.get_deleter().state() == 0);
+  }
+}
+
+template <class VT>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+#if TEST_STD_VER >= 11
+  { // the constructor does not participate in overload resolution when
+    // the deleter is a pointer type
+    using U = std::unique_ptr<VT, void (*)(void*)>;
+    static_assert(!std::is_constructible<U, decltype(nullptr)>::value, "");
+  }
+  { // the constructor does not participate in overload resolution when
+    // the deleter is not default constructible
+    using Del = CDeleter<VT>;
+    using U1  = std::unique_ptr<VT, NonDefaultDeleter>;
+    using U2  = std::unique_ptr<VT, Del&>;
+    using U3  = std::unique_ptr<VT, Del const&>;
+    static_assert(!std::is_constructible<U1, decltype(nullptr)>::value, "");
+    static_assert(!std::is_constructible<U2, decltype(nullptr)>::value, "");
+    static_assert(!std::is_constructible<U3, decltype(nullptr)>::value, "");
+  }
+#endif
+}
+
+DEFINE_AND_RUN_IS_INCOMPLETE_TEST({
+  { doIncompleteTypeTest(0, nullptr); }
+  checkNumIncompleteTypeAlive(0);
+  { doIncompleteTypeTest<IncompleteType, NCDeleter<IncompleteType> >(0, nullptr); }
+  checkNumIncompleteTypeAlive(0);
+  { doIncompleteTypeTest<IncompleteType[]>(0, nullptr); }
+  checkNumIncompleteTypeAlive(0);
+  { doIncompleteTypeTest<IncompleteType[], NCDeleter<IncompleteType[]> >(0, nullptr); }
+  checkNumIncompleteTypeAlive(0);
+})
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_basic<int>();
+    test_sfinae<int>();
+  }
+  {
+    test_basic<int[]>();
+    test_sfinae<int[]>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer.pass.cpp
new file mode 100644
index 0000000..cbce5c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer.pass.cpp
@@ -0,0 +1,206 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+//=============================================================================
+// TESTING std::unique_ptr::unique_ptr(pointer)
+//
+// Concerns:
+//   1 The pointer constructor works for any default constructible deleter types.
+//   2 The pointer constructor accepts pointers to derived types.
+//   2 The stored type 'T' is allowed to be incomplete.
+//
+// Plan
+//  1 Construct unique_ptr<T, D>'s with a pointer to 'T' and various deleter
+//   types (C-1)
+//  2 Construct unique_ptr<T, D>'s with a pointer to 'D' and various deleter
+//    types where 'D' is derived from 'T'. (C-1,2)
+//  3 Construct a unique_ptr<T, D> with a pointer to 'T' and various deleter
+//    types where 'T' is an incomplete type (C-1,3)
+
+// Test unique_ptr(pointer) ctor
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+// unique_ptr(pointer) ctor should only require default Deleter ctor
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_pointer() {
+  typedef typename std::conditional<!IsArray, A, A[]>::type ValueT;
+  const int expect_alive = IsArray ? 5 : 1;
+#if TEST_STD_VER >= 11
+  {
+    using U1 = std::unique_ptr<ValueT>;
+    using U2 = std::unique_ptr<ValueT, Deleter<ValueT> >;
+
+    // Test for noexcept
+    static_assert(std::is_nothrow_constructible<U1, A*>::value, "");
+    static_assert(std::is_nothrow_constructible<U2, A*>::value, "");
+
+    // Test for explicit
+    static_assert(!std::is_convertible<A*, U1>::value, "");
+    static_assert(!std::is_convertible<A*, U2>::value, "");
+  }
+#endif
+  {
+    A* p = newValue<ValueT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+
+    std::unique_ptr<ValueT> s(p);
+    assert(s.get() == p);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    A* p = newValue<ValueT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+
+    std::unique_ptr<ValueT, NCDeleter<ValueT> > s(p);
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    A* p = newValue<ValueT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+
+    std::unique_ptr<ValueT, DefaultCtorDeleter<ValueT> > s(p);
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+TEST_CONSTEXPR_CXX23 void test_derived() {
+  {
+    B* p = new B;
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 1);
+    }
+    std::unique_ptr<A> s(p);
+    assert(s.get() == p);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+  {
+    B* p = new B;
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 1);
+    }
+    std::unique_ptr<A, NCDeleter<A> > s(p);
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+}
+
+#if TEST_STD_VER >= 11
+struct NonDefaultDeleter {
+  NonDefaultDeleter() = delete;
+  void operator()(void*) const {}
+};
+
+struct GenericDeleter {
+  void operator()(void*) const;
+};
+#endif
+
+template <class T>
+void TEST_CONSTEXPR_CXX23 test_sfinae() {
+#if TEST_STD_VER >= 11
+  { // the constructor does not participate in overload resolution when
+    // the deleter is a pointer type
+    using U = std::unique_ptr<T, void (*)(void*)>;
+    static_assert(!std::is_constructible<U, T*>::value, "");
+  }
+  { // the constructor does not participate in overload resolution when
+    // the deleter is not default constructible
+    using Del = CDeleter<T>;
+    using U1 = std::unique_ptr<T, NonDefaultDeleter>;
+    using U2 = std::unique_ptr<T, Del&>;
+    using U3 = std::unique_ptr<T, Del const&>;
+    static_assert(!std::is_constructible<U1, T*>::value, "");
+    static_assert(!std::is_constructible<U2, T*>::value, "");
+    static_assert(!std::is_constructible<U3, T*>::value, "");
+  }
+#endif
+}
+
+static TEST_CONSTEXPR_CXX23 void test_sfinae_runtime() {
+#if TEST_STD_VER >= 11
+  { // the constructor does not participate in overload resolution when
+    // a base <-> derived conversion would occur.
+    using UA = std::unique_ptr<A[]>;
+    using UAD = std::unique_ptr<A[], GenericDeleter>;
+    using UAC = std::unique_ptr<const A[]>;
+    using UB = std::unique_ptr<B[]>;
+    using UBD = std::unique_ptr<B[], GenericDeleter>;
+    using UBC = std::unique_ptr<const B[]>;
+
+    static_assert(!std::is_constructible<UA, B*>::value, "");
+    static_assert(!std::is_constructible<UB, A*>::value, "");
+    static_assert(!std::is_constructible<UAD, B*>::value, "");
+    static_assert(!std::is_constructible<UBD, A*>::value, "");
+    static_assert(!std::is_constructible<UAC, const B*>::value, "");
+    static_assert(!std::is_constructible<UBC, const A*>::value, "");
+  }
+#endif
+}
+
+DEFINE_AND_RUN_IS_INCOMPLETE_TEST({
+  { doIncompleteTypeTest(1, getNewIncomplete()); }
+  checkNumIncompleteTypeAlive(0);
+  {
+    doIncompleteTypeTest<IncompleteType, NCDeleter<IncompleteType> >(
+        1, getNewIncomplete());
+  }
+  checkNumIncompleteTypeAlive(0);
+})
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_pointer</*IsArray*/ false>();
+    test_derived();
+    test_sfinae<int>();
+  }
+  {
+    test_pointer</*IsArray*/ true>();
+    test_sfinae<int[]>();
+    test_sfinae_runtime();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer_deleter.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer_deleter.fail.cpp
new file mode 100644
index 0000000..486a603
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer_deleter.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// unique_ptr<T, const D&>(pointer, D()) should not compile
+
+#include <memory>
+
+struct Deleter {
+  void operator()(int* p) const { delete p; }
+};
+
+int main(int, char**) {
+  // expected-error@+1 {{call to deleted constructor of 'std::unique_ptr<int, const Deleter &>}}
+  std::unique_ptr<int, const Deleter&> s((int*)nullptr, Deleter());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer_deleter.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer_deleter.pass.cpp
new file mode 100644
index 0000000..a91abc8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.ctor/pointer_deleter.pass.cpp
@@ -0,0 +1,354 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+//=============================================================================
+// TESTING unique_ptr(pointer, deleter)
+//
+// Concerns:
+//   1 unique_ptr(pointer, deleter&&) only requires a MoveConstructible deleter.
+//   2 unique_ptr(pointer, deleter&) requires a CopyConstructible deleter.
+//   3 unique_ptr<T, D&>(pointer, deleter) does not require a CopyConstructible deleter.
+//   4 unique_ptr<T, D const&>(pointer, deleter) does not require a CopyConstructible deleter.
+//   5 unique_ptr(pointer, deleter) should work for derived pointers.
+//   6 unique_ptr(pointer, deleter) should work with function pointers.
+//   7 unique_ptr<void> should work.
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+bool my_free_called = false;
+
+void my_free(void*) { my_free_called = true; }
+
+#if TEST_STD_VER >= 11
+struct DeleterBase {
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+};
+struct CopyOnlyDeleter : DeleterBase {
+  TEST_CONSTEXPR_CXX23 CopyOnlyDeleter()                       = default;
+  TEST_CONSTEXPR_CXX23 CopyOnlyDeleter(CopyOnlyDeleter const&) = default;
+  CopyOnlyDeleter(CopyOnlyDeleter&&) = delete;
+};
+struct MoveOnlyDeleter : DeleterBase {
+  TEST_CONSTEXPR_CXX23 MoveOnlyDeleter()                  = default;
+  TEST_CONSTEXPR_CXX23 MoveOnlyDeleter(MoveOnlyDeleter&&) = default;
+};
+struct NoCopyMoveDeleter : DeleterBase {
+  TEST_CONSTEXPR_CXX23 NoCopyMoveDeleter()    = default;
+  NoCopyMoveDeleter(NoCopyMoveDeleter const&) = delete;
+};
+#endif
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_sfinae() {
+#if TEST_STD_VER >= 11
+  typedef typename std::conditional<!IsArray, int, int[]>::type VT;
+  {
+    using D = CopyOnlyDeleter;
+    using U = std::unique_ptr<VT, D>;
+    static_assert(std::is_constructible<U, int*, D const&>::value, "");
+    static_assert(std::is_constructible<U, int*, D&>::value, "");
+    static_assert(std::is_constructible<U, int*, D&&>::value, "");
+    // FIXME: __libcpp_compressed_pair attempts to perform a move even though
+    // it should only copy.
+    //D d;
+    //U u(nullptr, std::move(d));
+  }
+  {
+    using D = MoveOnlyDeleter;
+    using U = std::unique_ptr<VT, D>;
+    static_assert(!std::is_constructible<U, int*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, int*, D&>::value, "");
+    static_assert(std::is_constructible<U, int*, D&&>::value, "");
+    D d;
+    U u(nullptr, std::move(d));
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<VT, D>;
+    static_assert(!std::is_constructible<U, int*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, int*, D&>::value, "");
+    static_assert(!std::is_constructible<U, int*, D&&>::value, "");
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<VT, D&>;
+    static_assert(!std::is_constructible<U, int*, D const&>::value, "");
+    static_assert(std::is_constructible<U, int*, D&>::value, "");
+    static_assert(!std::is_constructible<U, int*, D&&>::value, "");
+    static_assert(!std::is_constructible<U, int*, const D&&>::value, "");
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<VT, const D&>;
+    static_assert(std::is_constructible<U, int*, D const&>::value, "");
+    static_assert(std::is_constructible<U, int*, D&>::value, "");
+    static_assert(!std::is_constructible<U, int*, D&&>::value, "");
+    static_assert(!std::is_constructible<U, int*, const D&&>::value, "");
+  }
+#endif
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_noexcept() {
+#if TEST_STD_VER >= 11
+  typedef typename std::conditional<!IsArray, int, int[]>::type VT;
+  {
+    using D = CopyOnlyDeleter;
+    using U = std::unique_ptr<VT, D>;
+    static_assert(std::is_nothrow_constructible<U, int*, D const&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, int*, D&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, int*, D&&>::value, "");
+  }
+  {
+    using D = MoveOnlyDeleter;
+    using U = std::unique_ptr<VT, D>;
+    static_assert(std::is_nothrow_constructible<U, int*, D&&>::value, "");
+    D d;
+    U u(nullptr, std::move(d));
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<VT, D&>;
+    static_assert(std::is_nothrow_constructible<U, int*, D&>::value, "");
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<VT, const D&>;
+    static_assert(std::is_nothrow_constructible<U, int*, D const&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, int*, D&>::value, "");
+  }
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 void test_sfinae_runtime() {
+#if TEST_STD_VER >= 11
+  {
+    using D = CopyOnlyDeleter;
+    using U = std::unique_ptr<A[], D>;
+    static_assert(std::is_nothrow_constructible<U, A*, D const&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, A*, D&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, A*, D&&>::value, "");
+
+    static_assert(!std::is_constructible<U, B*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&&>::value, "");
+    // FIXME: __libcpp_compressed_pair attempts to perform a move even though
+    // it should only copy.
+    //D d;
+    //U u(nullptr, std::move(d));
+  }
+  {
+    using D = MoveOnlyDeleter;
+    using U = std::unique_ptr<A[], D>;
+    static_assert(!std::is_constructible<U, A*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, A*, D&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, A*, D&&>::value, "");
+
+    static_assert(!std::is_constructible<U, B*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&&>::value, "");
+    D d;
+    U u(nullptr, std::move(d));
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<A[], D>;
+    static_assert(!std::is_constructible<U, A*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, A*, D&>::value, "");
+    static_assert(!std::is_constructible<U, A*, D&&>::value, "");
+
+    static_assert(!std::is_constructible<U, B*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&&>::value, "");
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<A[], D&>;
+    static_assert(!std::is_constructible<U, A*, D const&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, A*, D&>::value, "");
+    static_assert(!std::is_constructible<U, A*, D&&>::value, "");
+    static_assert(!std::is_constructible<U, A*, const D&&>::value, "");
+
+    static_assert(!std::is_constructible<U, B*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&&>::value, "");
+    static_assert(!std::is_constructible<U, B*, const D&&>::value, "");
+  }
+  {
+    using D = NoCopyMoveDeleter;
+    using U = std::unique_ptr<A[], const D&>;
+    static_assert(std::is_nothrow_constructible<U, A*, D const&>::value, "");
+    static_assert(std::is_nothrow_constructible<U, A*, D&>::value, "");
+    static_assert(!std::is_constructible<U, A*, D&&>::value, "");
+    static_assert(!std::is_constructible<U, A*, const D&&>::value, "");
+
+    static_assert(!std::is_constructible<U, B*, D const&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&>::value, "");
+    static_assert(!std::is_constructible<U, B*, D&&>::value, "");
+    static_assert(!std::is_constructible<U, B*, const D&&>::value, "");
+  }
+#endif
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<!IsArray, A, A[]>::type VT;
+  const int expect_alive = IsArray ? 5 : 1;
+  { // MoveConstructible deleter (C-1)
+    A* p = newValue<VT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    std::unique_ptr<VT, Deleter<VT> > s(p, Deleter<VT>(5));
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 5);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  { // CopyConstructible deleter (C-2)
+    A* p = newValue<VT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    CopyDeleter<VT> d(5);
+    std::unique_ptr<VT, CopyDeleter<VT> > s(p, d);
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 5);
+    d.set_state(6);
+    assert(s.get_deleter().state() == 5);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  { // Reference deleter (C-3)
+    A* p = newValue<VT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    NCDeleter<VT> d(5);
+    std::unique_ptr<VT, NCDeleter<VT>&> s(p, d);
+    assert(s.get() == p);
+    assert(&s.get_deleter() == &d);
+    assert(s.get_deleter().state() == 5);
+    d.set_state(6);
+    assert(s.get_deleter().state() == 6);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  { // Const Reference deleter (C-4)
+    A* p = newValue<VT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    NCConstDeleter<VT> d(5);
+    std::unique_ptr<VT, NCConstDeleter<VT> const&> s(p, d);
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 5);
+    assert(&s.get_deleter() == &d);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    { // Void and function pointers (C-6,7)
+      typedef typename std::conditional<IsArray, int[], int>::type VT2;
+      my_free_called = false;
+      {
+        int i = 0;
+        std::unique_ptr<VT2, void (*)(void*)> s(&i, my_free);
+        assert(s.get() == &i);
+        assert(s.get_deleter() == my_free);
+        assert(!my_free_called);
+      }
+      assert(my_free_called);
+    }
+  }
+}
+
+TEST_CONSTEXPR_CXX23 void test_basic_single() {
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+  { // Derived pointers (C-5)
+    B* p = new B;
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 1);
+    }
+    std::unique_ptr<A, Deleter<A> > s(p, Deleter<A>(5));
+    assert(s.get() == p);
+    assert(s.get_deleter().state() == 5);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+
+    { // Void and function pointers (C-6,7)
+      my_free_called = false;
+      {
+        int i = 0;
+        std::unique_ptr<void, void (*)(void*)> s(&i, my_free);
+        assert(s.get() == &i);
+        assert(s.get_deleter() == my_free);
+        assert(!my_free_called);
+      }
+      assert(my_free_called);
+    }
+  }
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_nullptr() {
+#if TEST_STD_VER >= 11
+  typedef typename std::conditional<!IsArray, A, A[]>::type VT;
+  {
+    std::unique_ptr<VT, Deleter<VT> > u(nullptr, Deleter<VT>{});
+    assert(u.get() == nullptr);
+  }
+  {
+    NCDeleter<VT> d;
+    std::unique_ptr<VT, NCDeleter<VT>& > u(nullptr, d);
+    assert(u.get() == nullptr);
+  }
+  {
+    NCConstDeleter<VT> d;
+    std::unique_ptr<VT, NCConstDeleter<VT> const& > u(nullptr, d);
+    assert(u.get() == nullptr);
+  }
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_basic</*IsArray*/ false>();
+    test_nullptr<false>();
+    test_basic_single();
+    test_sfinae<false>();
+    test_noexcept<false>();
+  }
+  {
+    test_basic</*IsArray*/ true>();
+    test_nullptr<true>();
+    test_sfinae<true>();
+    test_sfinae_runtime();
+    test_noexcept<true>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.dtor/null.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.dtor/null.pass.cpp
new file mode 100644
index 0000000..54aec49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.dtor/null.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// The deleter is not called if get() == 0
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+class Deleter {
+  int state_;
+
+  Deleter(Deleter&);
+  Deleter& operator=(Deleter&);
+
+public:
+  TEST_CONSTEXPR_CXX23 Deleter() : state_(0) {}
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(void*) { ++state_; }
+};
+
+template <class T>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  Deleter d;
+  assert(d.state() == 0);
+  {
+    std::unique_ptr<T, Deleter&> p(nullptr, d);
+    assert(p.get() == nullptr);
+    assert(&p.get_deleter() == &d);
+  }
+  assert(d.state() == 0);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic<int>();
+  test_basic<int[]>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/release.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/release.pass.cpp
new file mode 100644
index 0000000..7aedac9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/release.pass.cpp
@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test release
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 3 : 1;
+#if TEST_STD_VER >= 11
+  {
+    using U = std::unique_ptr<VT>;
+    U u; ((void)u);
+    ASSERT_NOEXCEPT(u.release());
+  }
+#endif
+  {
+    std::unique_ptr<VT> p(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    A* ap = p.get();
+    A* a = p.release();
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(p.get() == nullptr);
+    assert(ap == a);
+    assert(a != nullptr);
+
+    if (IsArray)
+      delete[] a;
+    else
+      delete a;
+
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.pass.cpp
new file mode 100644
index 0000000..275ab3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test reset
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_reset_pointer() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 3 : 1;
+#if TEST_STD_VER >= 11
+  {
+    using U = std::unique_ptr<VT>;
+    U u;
+    ((void)u);
+    ASSERT_NOEXCEPT(u.reset((A*)nullptr));
+  }
+#endif
+  {
+    std::unique_ptr<VT> p(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    A* i = p.get();
+    assert(i != nullptr);
+    A* new_value = newValue<VT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == (expect_alive * 2));
+    p.reset(new_value);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(p.get() == new_value);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    std::unique_ptr<const VT> p(newValue<const VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    const A* i = p.get();
+    assert(i != nullptr);
+    A* new_value = newValue<VT>(expect_alive);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == (expect_alive * 2));
+    p.reset(new_value);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    assert(p.get() == new_value);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_reset_nullptr() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 3 : 1;
+#if TEST_STD_VER >= 11
+  {
+    using U = std::unique_ptr<VT>;
+    U u;
+    ((void)u);
+    ASSERT_NOEXCEPT(u.reset(nullptr));
+  }
+#endif
+  {
+    std::unique_ptr<VT> p(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    A* i = p.get();
+    assert(i != nullptr);
+    p.reset(nullptr);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+    assert(p.get() == nullptr);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_reset_no_arg() {
+  typedef typename std::conditional<IsArray, A[], A>::type VT;
+  const int expect_alive = IsArray ? 3 : 1;
+#if TEST_STD_VER >= 11
+  {
+    using U = std::unique_ptr<VT>;
+    U u;
+    ((void)u);
+    ASSERT_NOEXCEPT(u.reset());
+  }
+#endif
+  {
+    std::unique_ptr<VT> p(newValue<VT>(expect_alive));
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == expect_alive);
+    A* i = p.get();
+    assert(i != nullptr);
+    p.reset();
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 0);
+    assert(p.get() == nullptr);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    test_reset_pointer</*IsArray*/ false>();
+    test_reset_nullptr<false>();
+    test_reset_no_arg<false>();
+  }
+  {
+    test_reset_pointer</*IsArray*/true>();
+    test_reset_nullptr<true>();
+    test_reset_no_arg<true>();
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.runtime.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.runtime.fail.cpp
new file mode 100644
index 0000000..555c678
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.runtime.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+// UNSUPPORTED: c++03
+
+// unique_ptr
+
+// test reset
+
+#include <memory>
+#include <cassert>
+
+#include "unique_ptr_test_helper.h"
+
+int main(int, char**) {
+  {
+    std::unique_ptr<A[]> p;
+    p.reset(static_cast<B*>(nullptr)); // expected-error {{no matching member function for call to 'reset'}}
+  }
+  {
+    std::unique_ptr<int[]> p;
+    p.reset(static_cast<const int*>(nullptr)); // expected-error {{no matching member function for call to 'reset'}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.single.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.single.pass.cpp
new file mode 100644
index 0000000..d5e5c54
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset.single.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test reset
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    std::unique_ptr<A> p(new A);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 0);
+    }
+    A* i = p.get();
+    assert(i != nullptr);
+    p.reset(new B);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 1);
+    }
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+  {
+    std::unique_ptr<A> p(new B);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 1);
+    }
+    A* i = p.get();
+    assert(i != nullptr);
+    p.reset(new B);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert(A::count == 1);
+      assert(B::count == 1);
+    }
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset_self.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset_self.pass.cpp
new file mode 100644
index 0000000..8eeca6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/reset_self.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test reset against resetting self
+
+#include <memory>
+
+#include "test_macros.h"
+
+struct A {
+  std::unique_ptr<A> ptr_;
+
+  TEST_CONSTEXPR_CXX23 A() : ptr_(this) {}
+  TEST_CONSTEXPR_CXX23 void reset() { ptr_.reset(); }
+};
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  (new A)->reset();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/swap.pass.cpp
new file mode 100644
index 0000000..41391b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/swap.pass.cpp
@@ -0,0 +1,109 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test swap
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+struct TT {
+  int state_;
+  static int count;
+  TEST_CONSTEXPR_CXX23 TT() : state_(-1) {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 explicit TT(int i) : state_(i) {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 TT(const TT& a) : state_(a.state_) {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 TT& operator=(const TT& a) {
+    state_ = a.state_;
+    return *this;
+  }
+  TEST_CONSTEXPR_CXX23 ~TT() {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      --count;
+  }
+
+  friend TEST_CONSTEXPR_CXX23 bool operator==(const TT& x, const TT& y) { return x.state_ == y.state_; }
+};
+
+int TT::count = 0;
+
+template <class T>
+TEST_CONSTEXPR_CXX23 typename std::remove_all_extents<T>::type* newValueInit(int size, int new_value) {
+  typedef typename std::remove_all_extents<T>::type VT;
+  VT* p = newValue<T>(size);
+  for (int i = 0; i < size; ++i)
+    (p + i)->state_ = new_value;
+  return p;
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, TT[], TT>::type VT;
+  const int expect_alive = IsArray ? 5 : 1;
+#if TEST_STD_VER >= 11
+  {
+    using U = std::unique_ptr<VT, Deleter<VT> >;
+    U u; ((void)u);
+    ASSERT_NOEXCEPT(u.swap(u));
+  }
+#endif
+  {
+    TT* p1 = newValueInit<VT>(expect_alive, 1);
+    std::unique_ptr<VT, Deleter<VT> > s1(p1, Deleter<VT>(1));
+    TT* p2 = newValueInit<VT>(expect_alive, 2);
+    std::unique_ptr<VT, Deleter<VT> > s2(p2, Deleter<VT>(2));
+    assert(s1.get() == p1);
+    assert(*s1.get() == TT(1));
+    assert(s1.get_deleter().state() == 1);
+    assert(s2.get() == p2);
+    assert(*s2.get() == TT(2));
+    assert(s2.get_deleter().state() == 2);
+    s1.swap(s2);
+    assert(s1.get() == p2);
+    assert(*s1.get() == TT(2));
+    assert(s1.get_deleter().state() == 2);
+    assert(s2.get() == p1);
+    assert(*s2.get() == TT(1));
+    assert(s2.get_deleter().state() == 1);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(TT::count == (expect_alive * 2));
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(TT::count == 0);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/dereference.single.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/dereference.single.pass.cpp
new file mode 100644
index 0000000..4a1e970
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/dereference.single.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op*()
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::unique_ptr<int> p(new int(3));
+  assert(*p == 3);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/dereference.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/dereference.verify.cpp
new file mode 100644
index 0000000..d125eb0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/dereference.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op*()
+
+#include <memory>
+#include <cassert>
+
+int main(int, char**) {
+  std::unique_ptr<int[]> p(new int(3));
+  const std::unique_ptr<int[]>& cp = p;
+  TEST_IGNORE_NODISCARD(*p);  // expected-error-re {{indirection requires pointer operand ('std::unique_ptr<int{{[ ]*}}[]>' invalid)}}
+  TEST_IGNORE_NODISCARD(*cp); // expected-error-re {{indirection requires pointer operand ('const std::unique_ptr<int{{[ ]*}}[]>' invalid)}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/explicit_bool.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/explicit_bool.pass.cpp
new file mode 100644
index 0000000..cc68297
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/explicit_bool.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test constexpr explicit operator bool() const noexcept; // constexpr since C++23
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+template <class UPtr>
+TEST_CONSTEXPR_CXX23 void doTest(UPtr& p, bool ExpectTrue) {
+  if (p)
+    assert(ExpectTrue);
+  else
+    assert(!ExpectTrue);
+
+  if (!p)
+    assert(!ExpectTrue);
+  else
+    assert(ExpectTrue);
+}
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, int[], int>::type VT;
+  typedef std::unique_ptr<VT> U;
+  {
+    static_assert((std::is_constructible<bool, U>::value), "");
+    static_assert((std::is_constructible<bool, U const&>::value), "");
+  }
+#if TEST_STD_VER >= 11
+  {
+    static_assert(!std::is_convertible<U, bool>::value, "");
+    static_assert(!std::is_convertible<U const&, bool>::value, "");
+  }
+#endif
+  {
+    U p(newValue<VT>(1));
+    U const& cp = p;
+    doTest(p, true);
+    doTest(cp, true);
+  }
+  {
+    U p;
+    const U& cp = p;
+    doTest(p, false);
+    doTest(cp, false);
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get.pass.cpp
new file mode 100644
index 0000000..3bd3788
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test get
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, int[], int>::type VT;
+  typedef const VT CVT;
+  {
+    typedef std::unique_ptr<VT> U;
+    int* p = newValue<VT>(1);
+    U s(p);
+    U const& sc = s;
+    ASSERT_SAME_TYPE(decltype(s.get()), int*);
+    ASSERT_SAME_TYPE(decltype(sc.get()), int*);
+    assert(s.get() == p);
+    assert(sc.get() == s.get());
+  }
+  {
+    typedef std::unique_ptr<CVT> U;
+    const int* p = newValue<VT>(1);
+    U s(p);
+    U const& sc = s;
+    ASSERT_SAME_TYPE(decltype(s.get()), const int*);
+    ASSERT_SAME_TYPE(decltype(sc.get()), const int*);
+    assert(s.get() == p);
+    assert(sc.get() == s.get());
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp
new file mode 100644
index 0000000..67e55bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/get_deleter.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test get_deleter()
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct Deleter {
+  TEST_CONSTEXPR_CXX23 Deleter() {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(void*) const {}
+
+  TEST_CONSTEXPR_CXX23 int test() { return 5; }
+  TEST_CONSTEXPR_CXX23 int test() const { return 6; }
+};
+
+template <bool IsArray>
+TEST_CONSTEXPR_CXX23 void test_basic() {
+  typedef typename std::conditional<IsArray, int[], int>::type VT;
+  {
+    std::unique_ptr<int, Deleter> p;
+    assert(p.get_deleter().test() == 5);
+  }
+  {
+    const std::unique_ptr<VT, Deleter> p;
+    assert(p.get_deleter().test() == 6);
+  }
+  {
+    typedef std::unique_ptr<VT, const Deleter&> UPtr;
+    const Deleter d;
+    UPtr p(nullptr, d);
+    const UPtr& cp = p;
+    ASSERT_SAME_TYPE(decltype(p.get_deleter()), const Deleter&);
+    ASSERT_SAME_TYPE(decltype(cp.get_deleter()), const Deleter&);
+    assert(p.get_deleter().test() == 6);
+    assert(cp.get_deleter().test() == 6);
+  }
+  {
+    typedef std::unique_ptr<VT, Deleter&> UPtr;
+    Deleter d;
+    UPtr p(nullptr, d);
+    const UPtr& cp = p;
+    ASSERT_SAME_TYPE(decltype(p.get_deleter()), Deleter&);
+    ASSERT_SAME_TYPE(decltype(cp.get_deleter()), Deleter&);
+    assert(p.get_deleter().test() == 5);
+    assert(cp.get_deleter().test() == 5);
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_basic</*IsArray*/ false>();
+  test_basic<true>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_arrow.single.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_arrow.single.pass.cpp
new file mode 100644
index 0000000..7d247b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_arrow.single.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op->()
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {
+  int i_;
+
+  TEST_CONSTEXPR_CXX23 A() : i_(7) {}
+};
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::unique_ptr<A> p(new A);
+  assert(p->i_ == 7);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_arrow.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_arrow.verify.cpp
new file mode 100644
index 0000000..3d1a5e0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_arrow.verify.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op->()
+
+#include <memory>
+#include <cassert>
+
+struct V {
+  int member;
+};
+
+int main(int, char**) {
+  std::unique_ptr<V[]> p;
+  std::unique_ptr<V[]> const& cp = p;
+
+  p->member; // expected-error-re {{member reference type 'std::unique_ptr<V{{[ ]*}}[]>' is not a pointer}}
+             // expected-error@-1 {{no member named 'member'}}
+
+  cp->member; // expected-error-re {{member reference type 'const std::unique_ptr<V{{[ ]*}}[]>' is not a pointer}}
+              // expected-error@-1 {{no member named 'member'}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_subscript.runtime.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_subscript.runtime.pass.cpp
new file mode 100644
index 0000000..28af75a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_subscript.runtime.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op[](size_t)
+
+#include <memory>
+#include <cassert>
+
+// TODO: Move TEST_IS_CONSTANT_EVALUATED into it's own header
+#include <type_traits>
+
+#include "test_macros.h"
+
+class A {
+  int state_;
+  static int next_;
+
+public:
+  TEST_CONSTEXPR_CXX23 A() : state_(0) {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      state_ = ++next_;
+  }
+
+  TEST_CONSTEXPR_CXX23 int get() const { return state_; }
+
+  friend TEST_CONSTEXPR_CXX23 bool operator==(const A& x, int y) { return x.state_ == y; }
+
+  TEST_CONSTEXPR_CXX23 A& operator=(int i) {
+    state_ = i;
+    return *this;
+  }
+};
+
+int A::next_ = 0;
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::unique_ptr<A[]> p(new A[3]);
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(p[0] == 1);
+    assert(p[1] == 2);
+    assert(p[2] == 3);
+  }
+  p[0] = 3;
+  p[1] = 2;
+  p[2] = 1;
+  assert(p[0] == 3);
+  assert(p[1] == 2);
+  assert(p[2] == 1);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_subscript.single.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_subscript.single.fail.cpp
new file mode 100644
index 0000000..66286aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.observers/op_subscript.single.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// test op[](size_t)
+
+#include <memory>
+#include <cassert>
+
+int main(int, char**) {
+  std::unique_ptr<int> p(new int[3]);
+  std::unique_ptr<int> const& cp = p;
+  p[0];  // expected-error {{type 'std::unique_ptr<int>' does not provide a subscript operator}}
+  cp[1]; // expected-error {{type 'const std::unique_ptr<int>' does not provide a subscript operator}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array.pass.cpp
new file mode 100644
index 0000000..7aef0eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <memory>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+//    The only way to create an unique_ptr<T[]> is to default construct them.
+
+class foo {
+public:
+  TEST_CONSTEXPR_CXX23 foo() : val_(3) {}
+  TEST_CONSTEXPR_CXX23 int get() const { return val_; }
+
+private:
+  int val_;
+};
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    auto p1 = std::make_unique<int[]>(5);
+    for (int i = 0; i < 5; ++i)
+      assert(p1[i] == 0);
+  }
+
+  {
+    auto p2 = std::make_unique<std::string[]>(5);
+    for (int i = 0; i < 5; ++i)
+      assert(p2[i].size() == 0);
+  }
+
+  {
+    auto p3 = std::make_unique<foo[]>(7);
+    for (int i = 0; i < 7; ++i)
+      assert(p3[i].get() == 3);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array1.compile.fail.cpp
new file mode 100644
index 0000000..56adccf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array1.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    auto up1 = std::make_unique<std::string[]>("error"); // doesn't compile - no bound
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array2.compile.fail.cpp
new file mode 100644
index 0000000..fda45ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array2.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    auto up2 = std::make_unique<int[]>(10, 20, 30, 40);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array3.compile.fail.cpp
new file mode 100644
index 0000000..9fa05c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array3.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    auto up3 = std::make_unique<int[5]>();    // this is deleted
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array4.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array4.compile.fail.cpp
new file mode 100644
index 0000000..d98f052
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.array4.compile.fail.cpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <memory>
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    auto up4 = std::make_unique<int[5]>(11, 22, 33, 44, 55); // deleted
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.single.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.single.pass.cpp
new file mode 100644
index 0000000..b9211f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.single.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <memory>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    std::unique_ptr<int> p1 = std::make_unique<int>(1);
+    assert(*p1 == 1);
+    p1 = std::make_unique<int>();
+    assert(*p1 == 0);
+  }
+
+  {
+    std::unique_ptr<std::string> p2 = std::make_unique<std::string>("Meow!");
+    assert(*p2 == "Meow!");
+    p2 = std::make_unique<std::string>();
+    assert(*p2 == "");
+    p2 = std::make_unique<std::string>(6, 'z');
+    assert(*p2 == "zzzzzz");
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.sizezero.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.sizezero.pass.cpp
new file mode 100644
index 0000000..5779ba3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique.sizezero.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This code triggers https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104568
+// UNSUPPORTED: msvc
+
+// Test the fix for https://llvm.org/PR54100
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A {
+  int m[0];
+};
+static_assert(sizeof(A) == 0, "");  // an extension supported by GCC and Clang
+
+int main(int, char**)
+{
+  {
+    std::unique_ptr<A> p = std::unique_ptr<A>(new A);
+    assert(p != nullptr);
+  }
+  {
+    std::unique_ptr<A[]> p = std::unique_ptr<A[]>(new A[1]);
+    assert(p != nullptr);
+  }
+#if TEST_STD_VER > 11
+  {
+    std::unique_ptr<A> p = std::make_unique<A>();
+    assert(p != nullptr);
+  }
+  {
+    std::unique_ptr<A[]> p = std::make_unique<A[]>(1);
+    assert(p != nullptr);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique_for_overwrite.default_init.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique_for_overwrite.default_init.pass.cpp
new file mode 100644
index 0000000..5f4fbd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique_for_overwrite.default_init.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: sanitizer-new-delete
+
+// template<class T>
+//   constexpr unique_ptr<T> make_unique_for_overwrite(); // T is not array
+//
+// template<class T>
+//   constexpr unique_ptr<T> make_unique_for_overwrite(size_t n); // T is U[]
+
+// Test the object is not value initialized
+
+#include <cassert>
+#include <concepts>
+#include <cstddef>
+#include <memory>
+#include <stdlib.h>
+
+constexpr char pattern = 0xDE;
+
+void* operator new(std::size_t count) {
+  void* ptr = malloc(count);
+  for (std::size_t i = 0; i < count; ++i) {
+    *(reinterpret_cast<char*>(ptr) + i) = pattern;
+  }
+  return ptr;
+}
+
+void* operator new[](std::size_t count) { return ::operator new(count); }
+
+void operator delete(void* ptr) noexcept { free(ptr); }
+
+void operator delete[](void* ptr) noexcept { ::operator delete(ptr); }
+
+void test() {
+  {
+    std::same_as<std::unique_ptr<int>> auto ptr = std::make_unique_for_overwrite<int>();
+    assert(*(reinterpret_cast<char*>(ptr.get())) == pattern);
+  }
+  {
+    std::same_as<std::unique_ptr<int[]>> auto ptr = std::make_unique_for_overwrite<int[]>(3);
+    assert(*(reinterpret_cast<char*>(&ptr[0])) == pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[1])) == pattern);
+    assert(*(reinterpret_cast<char*>(&ptr[2])) == pattern);
+  }
+}
+
+int main(int, char**) {
+  test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique_for_overwrite.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique_for_overwrite.pass.cpp
new file mode 100644
index 0000000..3f86904
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.create/make_unique_for_overwrite.pass.cpp
@@ -0,0 +1,149 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// template<class T>
+//   constexpr unique_ptr<T> make_unique_for_overwrite(); // T is not array
+//
+// template<class T>
+//   constexpr unique_ptr<T> make_unique_for_overwrite(size_t n); // T is U[]
+//
+// template<class T, class... Args>
+//   unspecified make_unique_for_overwrite(Args&&...) = delete; // T is U[N]
+
+#include <cassert>
+#include <concepts>
+#include <cstring>
+#include <memory>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class T, class... Args>
+concept HasMakeUniqueForOverwrite =
+    requires(Args&&... args) { std::make_unique_for_overwrite<T>(std::forward<Args>(args)...); };
+
+struct Foo {
+  int i;
+};
+
+// template<class T>
+//   constexpr unique_ptr<T> make_unique_for_overwrite();
+static_assert(HasMakeUniqueForOverwrite<int>);
+static_assert(HasMakeUniqueForOverwrite<Foo>);
+static_assert(!HasMakeUniqueForOverwrite<int, int>);
+static_assert(!HasMakeUniqueForOverwrite<Foo, Foo>);
+
+// template<class T>
+//   constexpr unique_ptr<T> make_unique_for_overwrite(size_t n);
+static_assert(HasMakeUniqueForOverwrite<int[], size_t>);
+static_assert(HasMakeUniqueForOverwrite<Foo[], size_t>);
+static_assert(!HasMakeUniqueForOverwrite<int[]>);
+static_assert(!HasMakeUniqueForOverwrite<Foo[]>);
+static_assert(!HasMakeUniqueForOverwrite<int[], size_t, int>);
+static_assert(!HasMakeUniqueForOverwrite<Foo[], size_t, int>);
+
+// template<class T, class... Args>
+//   unspecified make_unique_for_overwrite(Args&&...) = delete;
+static_assert(!HasMakeUniqueForOverwrite<int[2]>);
+static_assert(!HasMakeUniqueForOverwrite<int[2], size_t>);
+static_assert(!HasMakeUniqueForOverwrite<int[2], int>);
+static_assert(!HasMakeUniqueForOverwrite<int[2], int, int>);
+static_assert(!HasMakeUniqueForOverwrite<Foo[2]>);
+static_assert(!HasMakeUniqueForOverwrite<Foo[2], size_t>);
+static_assert(!HasMakeUniqueForOverwrite<Foo[2], int>);
+static_assert(!HasMakeUniqueForOverwrite<Foo[2], int, int>);
+
+struct WithDefaultConstructor {
+  int i;
+  constexpr WithDefaultConstructor() : i(5) {}
+};
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  // single int
+  {
+    std::same_as<std::unique_ptr<int>> decltype(auto) ptr = std::make_unique_for_overwrite<int>();
+    // memory is available for write, otherwise constexpr test would fail
+    *ptr = 5;
+  }
+
+  // unbounded array int[]
+  {
+    std::same_as<std::unique_ptr<int[]>> decltype(auto) ptrs = std::make_unique_for_overwrite<int[]>(3);
+
+    // memory is available for write, otherwise constexpr test would fail
+    ptrs[0] = 3;
+    ptrs[1] = 4;
+    ptrs[2] = 5;
+  }
+
+  // single with default constructor
+  {
+    std::same_as<std::unique_ptr<WithDefaultConstructor>> decltype(auto) ptr =
+        std::make_unique_for_overwrite<WithDefaultConstructor>();
+    assert(ptr->i == 5);
+  }
+
+  // unbounded array with default constructor
+  {
+    std::same_as<std::unique_ptr<WithDefaultConstructor[]>> decltype(auto) ptrs =
+        std::make_unique_for_overwrite<WithDefaultConstructor[]>(3);
+    assert(ptrs[0].i == 5);
+    assert(ptrs[1].i == 5);
+    assert(ptrs[2].i == 5);
+  }
+
+  return true;
+}
+
+// The standard specifically says to use `new (p) T`, which means that we should pick up any
+// custom in-class operator new if there is one.
+struct WithCustomNew {
+  inline static bool customNewCalled    = false;
+  inline static bool customNewArrCalled = false;
+
+  static void* operator new(size_t n) {
+    customNewCalled = true;
+    return ::operator new(n);
+    ;
+  }
+
+  static void* operator new[](size_t n) {
+    customNewArrCalled = true;
+    return ::operator new[](n);
+  }
+};
+
+void testCustomNew() {
+  // single with custom operator new
+  {
+    [[maybe_unused]] std::same_as<std::unique_ptr<WithCustomNew>> decltype(auto) ptr =
+        std::make_unique_for_overwrite<WithCustomNew>();
+
+    assert(WithCustomNew::customNewCalled);
+  }
+
+  // unbounded array with custom operator new
+  {
+    [[maybe_unused]] std::same_as<std::unique_ptr<WithCustomNew[]>> decltype(auto) ptr =
+        std::make_unique_for_overwrite<WithCustomNew[]>(3);
+
+    assert(WithCustomNew::customNewArrCalled);
+  }
+}
+
+int main(int, char**) {
+  test();
+  testCustomNew();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/convert_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/convert_ctor.pass.cpp
new file mode 100644
index 0000000..8dafb72
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/convert_ctor.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+// convert constructor
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::default_delete<B> d2;
+  std::default_delete<A> d1 = d2;
+  A* p                      = new B;
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 1);
+    assert(B::count == 1);
+  }
+
+  d1(p);
+
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(A::count == 0);
+    assert(B::count == 0);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/default.pass.cpp
new file mode 100644
index 0000000..3ac3e4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/default.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::default_delete<A> d;
+  A* p = new A;
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 1);
+
+  d(p);
+
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/incomplete.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/incomplete.compile.fail.cpp
new file mode 100644
index 0000000..75f02d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/incomplete.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+// Test that default_delete's operator() requires a complete type
+
+#include <memory>
+#include <cassert>
+
+struct A;
+
+int main(int, char**)
+{
+    std::default_delete<A> d;
+    A* p = 0;
+    d(p);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/void.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/void.compile.fail.cpp
new file mode 100644
index 0000000..3bffeb5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt/void.compile.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+// Test that default_delete's operator() requires a complete type
+
+#include <memory>
+#include <cassert>
+
+int main(int, char**)
+{
+    std::default_delete<const void> d;
+    const void* p = 0;
+    d(p);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/convert_ctor.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/convert_ctor.compile.fail.cpp
new file mode 100644
index 0000000..4a2bb5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/convert_ctor.compile.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+// Test that default_delete<T[]> does not have a working converting constructor
+
+#include <memory>
+#include <cassert>
+
+struct A
+{
+};
+
+struct B
+    : public A
+{
+};
+
+int main(int, char**)
+{
+    std::default_delete<B[]> d2;
+    std::default_delete<A[]> d1 = d2;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/convert_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/convert_ctor.pass.cpp
new file mode 100644
index 0000000..f95e2d7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/convert_ctor.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete[]
+
+// template <class U>
+//   constexpr default_delete(const default_delete<U[]>&); // constexpr since C++23
+//
+// This constructor shall not participate in overload resolution unless
+//   U(*)[] is convertible to T(*)[].
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::default_delete<int[]> d1;
+  std::default_delete<const int[]> d2 = d1;
+  ((void)d2);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/default.pass.cpp
new file mode 100644
index 0000000..af4d2ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/default.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+// Test that default_delete<T[]> has a working default constructor
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "unique_ptr_test_helper.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  std::default_delete<A[]> d;
+  A* p = new A[3];
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 3);
+
+  d(p);
+
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/incomplete.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/incomplete.compile.fail.cpp
new file mode 100644
index 0000000..54fe0fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.dflt1/incomplete.compile.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// default_delete
+
+// Test that default_delete<T[]>'s operator() requires a complete type
+
+#include <memory>
+#include <cassert>
+
+struct A;
+
+int main(int, char**)
+{
+    std::default_delete<A[]> d;
+    A* p = 0;
+    d(p);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.dltr/unique.ptr.dltr.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/cmp.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/cmp.pass.cpp
new file mode 100644
index 0000000..38e289b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/cmp.pass.cpp
@@ -0,0 +1,166 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// template <class T1, class D1, class T2, class D2>
+//   bool
+//   operator==(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+// template <class T1, class D1, class T2, class D2>
+//   bool
+//   operator!=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+// template <class T1, class D1, class T2, class D2>
+//   bool
+//   operator< (const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+// template <class T1, class D1, class T2, class D2>
+//   bool
+//   operator> (const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+// template <class T1, class D1, class T2, class D2>
+//   bool
+//   operator<=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+// template <class T1, class D1, class T2, class D2>
+//   bool
+//   operator>=(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+// template<class T1, class D1, class T2, class D2>
+//   requires three_way_comparable_with<typename unique_ptr<T1, D1>::pointer,
+//                                      typename unique_ptr<T2, D2>::pointer>
+//   compare_three_way_result_t<typename unique_ptr<T1, D1>::pointer,
+//                              typename unique_ptr<T2, D2>::pointer>
+//     operator<=>(const unique_ptr<T1, D1>& x, const unique_ptr<T2, D2>& y);
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "deleter_types.h"
+#include "test_comparisons.h"
+#include "unique_ptr_test_helper.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  AssertComparisonsReturnBool<std::unique_ptr<int> >();
+#if TEST_STD_VER > 17
+  AssertOrderReturn<std::strong_ordering, std::unique_ptr<int>>();
+#endif
+
+  // Pointers of same type
+  {
+    A* ptr1 = new A;
+    A* ptr2 = new A;
+    const std::unique_ptr<A, Deleter<A> > p1(ptr1);
+    const std::unique_ptr<A, Deleter<A> > p2(ptr2);
+
+    assert(!(p1 == p2));
+    assert(p1 != p2);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert((p1 < p2) == (ptr1 < ptr2));
+      assert((p1 <= p2) == (ptr1 <= ptr2));
+      assert((p1 > p2) == (ptr1 > ptr2));
+      assert((p1 >= p2) == (ptr1 >= ptr2));
+#if TEST_STD_VER > 17
+      assert((p1 <=> p2) != std::strong_ordering::equal);
+      assert((p1 <=> p2) == (ptr1 <=> ptr2));
+#endif
+    }
+  }
+  // Pointers of different type
+  {
+    A* ptr1 = new A;
+    B* ptr2 = new B;
+    const std::unique_ptr<A, Deleter<A> > p1(ptr1);
+    const std::unique_ptr<B, Deleter<B> > p2(ptr2);
+    assert(!(p1 == p2));
+    assert(p1 != p2);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert((p1 < p2) == (ptr1 < ptr2));
+      assert((p1 <= p2) == (ptr1 <= ptr2));
+      assert((p1 > p2) == (ptr1 > ptr2));
+      assert((p1 >= p2) == (ptr1 >= ptr2));
+#if TEST_STD_VER > 17
+    assert((p1 <=> p2) != std::strong_ordering::equal);
+    assert((p1 <=> p2) == (ptr1 <=> ptr2));
+#endif
+    }
+  }
+  // Pointers of same array type
+  {
+    A* ptr1 = new A[3];
+    A* ptr2 = new A[3];
+    const std::unique_ptr<A[], Deleter<A[]> > p1(ptr1);
+    const std::unique_ptr<A[], Deleter<A[]> > p2(ptr2);
+    assert(!(p1 == p2));
+    assert(p1 != p2);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert((p1 < p2) == (ptr1 < ptr2));
+      assert((p1 <= p2) == (ptr1 <= ptr2));
+      assert((p1 > p2) == (ptr1 > ptr2));
+      assert((p1 >= p2) == (ptr1 >= ptr2));
+#if TEST_STD_VER > 17
+    assert((p1 <=> p2) != std::strong_ordering::equal);
+    assert((p1 <=> p2) == (ptr1 <=> ptr2));
+#endif
+    }
+  }
+  // Pointers of different array types
+  {
+    A* ptr1 = new A[3];
+    B* ptr2 = new B[3];
+    const std::unique_ptr<A[], Deleter<A[]> > p1(ptr1);
+    const std::unique_ptr<B[], Deleter<B[]> > p2(ptr2);
+    assert(!(p1 == p2));
+    assert(p1 != p2);
+    if (!TEST_IS_CONSTANT_EVALUATED) {
+      assert((p1 < p2) == (ptr1 < ptr2));
+      assert((p1 <= p2) == (ptr1 <= ptr2));
+      assert((p1 > p2) == (ptr1 > ptr2));
+      assert((p1 >= p2) == (ptr1 >= ptr2));
+#if TEST_STD_VER > 17
+    assert((p1 <=> p2) != std::strong_ordering::equal);
+    assert((p1 <=> p2) == (ptr1 <=> ptr2));
+#endif
+    }
+  }
+  // Default-constructed pointers of same type
+  {
+    const std::unique_ptr<A, Deleter<A> > p1;
+    const std::unique_ptr<A, Deleter<A> > p2;
+    assert(p1 == p2);
+#if TEST_STD_VER > 17
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert((p1 <=> p2) == std::strong_ordering::equal);
+#endif
+  }
+  // Default-constructed pointers of different type
+  {
+    const std::unique_ptr<A, Deleter<A> > p1;
+    const std::unique_ptr<B, Deleter<B> > p2;
+    assert(p1 == p2);
+#if TEST_STD_VER > 17
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert((p1 <=> p2) == std::strong_ordering::equal);
+#endif
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/cmp_nullptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/cmp_nullptr.pass.cpp
new file mode 100644
index 0000000..ddd02a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/cmp_nullptr.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// template <class T, class D>
+//     constexpr bool operator==(const unique_ptr<T, D>& x, nullptr_t) noexcept; // constexpr since C++23
+// template <class T, class D>
+//     bool operator==(nullptr_t, const unique_ptr<T, D>& y) noexcept;           // removed in C++20
+// template <class T, class D>
+//     bool operator!=(const unique_ptr<T, D>& x, nullptr_t) noexcept;           // removed in C++20
+// template <class T, class D>
+//     bool operator!=(nullptr_t, const unique_ptr<T, D>& y) noexcept;           // removed in C++20
+// template <class T, class D>
+//     constexpr bool operator<(const unique_ptr<T, D>& x, nullptr_t);           // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator<(nullptr_t, const unique_ptr<T, D>& y);           // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator<=(const unique_ptr<T, D>& x, nullptr_t);          // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator<=(nullptr_t, const unique_ptr<T, D>& y);          // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator>(const unique_ptr<T, D>& x, nullptr_t);           // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator>(nullptr_t, const unique_ptr<T, D>& y);           // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator>=(const unique_ptr<T, D>& x, nullptr_t);          // constexpr since C++23
+// template <class T, class D>
+//     constexpr bool operator>=(nullptr_t, const unique_ptr<T, D>& y);          // constexpr since C++23
+// template<class T, class D>
+//   requires three_way_comparable<typename unique_ptr<T, D>::pointer>
+//   constexpr compare_three_way_result_t<typename unique_ptr<T, D>::pointer>
+//     operator<=>(const unique_ptr<T, D>& x, nullptr_t);                        // C++20
+
+#include <memory>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    AssertEqualityAreNoexcept<std::unique_ptr<int>, nullptr_t>();
+    AssertEqualityAreNoexcept<nullptr_t, std::unique_ptr<int> >();
+    AssertComparisonsReturnBool<std::unique_ptr<int>, nullptr_t>();
+    AssertComparisonsReturnBool<nullptr_t, std::unique_ptr<int> >();
+#if TEST_STD_VER > 17
+    AssertOrderReturn<std::strong_ordering, std::unique_ptr<int>, nullptr_t>();
+    AssertOrderReturn<std::strong_ordering, nullptr_t, std::unique_ptr<int>>();
+#endif
+  }
+
+  const std::unique_ptr<int> p1(new int(1));
+  assert(!(p1 == nullptr));
+  assert(!(nullptr == p1));
+  // A pointer to allocated storage and a nullptr can't be compared at compile-time
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    assert(!(p1 < nullptr));
+    assert((nullptr < p1));
+    assert(!(p1 <= nullptr));
+    assert((nullptr <= p1));
+    assert((p1 > nullptr));
+    assert(!(nullptr > p1));
+    assert((p1 >= nullptr));
+    assert(!(nullptr >= p1));
+#if TEST_STD_VER > 17
+    assert((nullptr <=> p1) == std::strong_ordering::less);
+    assert((p1 <=> nullptr) == std::strong_ordering::greater);
+#endif
+  }
+
+  const std::unique_ptr<int> p2;
+  assert((p2 == nullptr));
+  assert((nullptr == p2));
+  assert(!(p2 < nullptr));
+  assert(!(nullptr < p2));
+  assert((p2 <= nullptr));
+  assert((nullptr <= p2));
+  assert(!(p2 > nullptr));
+  assert(!(nullptr > p2));
+  assert((p2 >= nullptr));
+  assert((nullptr >= p2));
+#if TEST_STD_VER > 17
+  assert((nullptr <=> p2) == std::strong_ordering::equivalent);
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/swap.pass.cpp
new file mode 100644
index 0000000..c47883a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.special/swap.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Test swap
+
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct A
+{
+    int state_;
+    static int count;
+    TEST_CONSTEXPR_CXX23 A() : state_(0) {
+      if (!TEST_IS_CONSTANT_EVALUATED)
+        ++count;
+    }
+    TEST_CONSTEXPR_CXX23 explicit A(int i) : state_(i) {
+      if (!TEST_IS_CONSTANT_EVALUATED)
+        ++count;
+    }
+    TEST_CONSTEXPR_CXX23 A(const A& a) : state_(a.state_) {
+      if (!TEST_IS_CONSTANT_EVALUATED)
+        ++count;
+    }
+    TEST_CONSTEXPR_CXX23 A& operator=(const A& a) {
+      state_ = a.state_;
+      return *this;
+    }
+    TEST_CONSTEXPR_CXX23 ~A() {
+      if (!TEST_IS_CONSTANT_EVALUATED)
+        --count;
+    }
+
+    friend TEST_CONSTEXPR_CXX23 bool operator==(const A& x, const A& y) { return x.state_ == y.state_; }
+};
+
+int A::count = 0;
+
+template <class T>
+struct NonSwappableDeleter {
+  TEST_CONSTEXPR_CXX23 explicit NonSwappableDeleter(int) {}
+  TEST_CONSTEXPR_CXX23 NonSwappableDeleter& operator=(NonSwappableDeleter const&) { return *this; }
+  TEST_CONSTEXPR_CXX23 void operator()(T*) const {}
+
+private:
+  NonSwappableDeleter(NonSwappableDeleter const&);
+
+};
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  {
+    A* p1 = new A(1);
+    std::unique_ptr<A, Deleter<A> > s1(p1, Deleter<A>(1));
+    A* p2 = new A(2);
+    std::unique_ptr<A, Deleter<A> > s2(p2, Deleter<A>(2));
+    assert(s1.get() == p1);
+    assert(*s1 == A(1));
+    assert(s1.get_deleter().state() == 1);
+    assert(s2.get() == p2);
+    assert(*s2 == A(2));
+    assert(s2.get_deleter().state() == 2);
+    swap(s1, s2);
+    assert(s1.get() == p2);
+    assert(*s1 == A(2));
+    assert(s1.get_deleter().state() == 2);
+    assert(s2.get() == p1);
+    assert(*s2 == A(1));
+    assert(s2.get_deleter().state() == 1);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 2);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+  {
+    A* p1 = new A[3];
+    std::unique_ptr<A[], Deleter<A[]> > s1(p1, Deleter<A[]>(1));
+    A* p2 = new A[3];
+    std::unique_ptr<A[], Deleter<A[]> > s2(p2, Deleter<A[]>(2));
+    assert(s1.get() == p1);
+    assert(s1.get_deleter().state() == 1);
+    assert(s2.get() == p2);
+    assert(s2.get_deleter().state() == 2);
+    swap(s1, s2);
+    assert(s1.get() == p2);
+    assert(s1.get_deleter().state() == 2);
+    assert(s2.get() == p1);
+    assert(s2.get_deleter().state() == 1);
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      assert(A::count == 6);
+  }
+  if (!TEST_IS_CONSTANT_EVALUATED)
+    assert(A::count == 0);
+#if TEST_STD_VER >= 11
+    {
+        // test that unique_ptr's specialized swap is disabled when the deleter
+        // is non-swappable. Instead we should pick up the generic swap(T, T)
+        // and perform 3 move constructions.
+        typedef NonSwappableDeleter<int> D;
+        D  d(42);
+        int x = 42;
+        int y = 43;
+        std::unique_ptr<int, D&> p(&x, d);
+        std::unique_ptr<int, D&> p2(&y, d);
+        std::swap(p, p2);
+    }
+#endif
+
+    return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 23
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/char_ptr_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/char_ptr_ctor.pass.cpp
new file mode 100644
index 0000000..3ccc5a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/char_ptr_ctor.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// template <class charT>
+//     explicit bitset(const charT* str,
+//                     typename basic_string<charT>::size_type n = basic_string<charT>::npos,
+//                     charT zero = charT('0'), charT one = charT('1')); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <algorithm> // for 'min' and 'max'
+#include <stdexcept> // for 'invalid_argument'
+
+#include "test_macros.h"
+
+TEST_MSVC_DIAGNOSTIC_IGNORED(6294) // Ill-defined for-loop:  initial condition does not satisfy test.  Loop body not executed.
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_char_pointer_ctor()
+{
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    try {
+      std::bitset<N> v("xxx1010101010xxxx");
+      assert(false);
+    }
+    catch (std::invalid_argument&) {}
+  }
+#endif
+
+  {
+    const char str[] = "1010101010";
+    std::bitset<N> v(str);
+    std::size_t M = std::min<std::size_t>(v.size(), 10);
+    for (std::size_t i = 0; i < M; ++i)
+        assert(v[i] == (str[M - 1 - i] == '1'));
+    for (std::size_t i = 10; i < v.size(); ++i)
+        assert(v[i] == false);
+  }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_char_pointer_ctor<0>();
+  test_char_pointer_ctor<1>();
+  test_char_pointer_ctor<31>();
+  test_char_pointer_ctor<32>();
+  test_char_pointer_ctor<33>();
+  test_char_pointer_ctor<63>();
+  test_char_pointer_ctor<64>();
+  test_char_pointer_ctor<65>();
+  test_char_pointer_ctor<1000>();
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/default.pass.cpp
new file mode 100644
index 0000000..490fc75
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/default.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// default ctor
+
+#include <bitset>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_default_ctor()
+{
+    {
+        TEST_CONSTEXPR std::bitset<N> v1;
+        assert(v1.size() == N);
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v1[i] == false);
+    }
+#if TEST_STD_VER >= 11
+    {
+        constexpr std::bitset<N> v1;
+        static_assert(v1.size() == N, "");
+    }
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_default_ctor<0>();
+  test_default_ctor<1>();
+  test_default_ctor<31>();
+  test_default_ctor<32>();
+  test_default_ctor<33>();
+  test_default_ctor<63>();
+  test_default_ctor<64>();
+  test_default_ctor<65>();
+  test_default_ctor<1000>();
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/string_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/string_ctor.pass.cpp
new file mode 100644
index 0000000..327765b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/string_ctor.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset(string, pos, n, zero, one); // constexpr since C++23
+
+#include <bitset>
+#include <algorithm> // for 'min' and 'max'
+#include <cassert>
+#include <stdexcept> // for 'invalid_argument'
+#include <string>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_string_ctor() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  if (!TEST_IS_CONSTANT_EVALUATED) {
+    try {
+        std::string s("xxx1010101010xxxx");
+        std::bitset<N> v(s, s.size()+1, 10);
+        assert(false);
+    }
+    catch (std::out_of_range&)
+    {
+    }
+    try {
+        std::string s("xxx1010101010xxxx");
+        std::bitset<N> v(s, 2, 10);
+        assert(false);
+    }
+    catch (std::invalid_argument&)
+    {
+    }
+    try {
+        std::string s("xxxbababababaxxxx");
+        std::bitset<N> v(s, 2, 10, 'a', 'b');
+        assert(false);
+    }
+    catch (std::invalid_argument&)
+    {
+    }
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+  {
+    std::string s("xxx1010101010xxxx");
+    std::bitset<N> v(s, 3, 10);
+    std::size_t M = std::min<std::size_t>(v.size(), 10);
+    for (std::size_t i = 0; i < M; ++i)
+        assert(v[i] == (s[3 + M - 1 - i] == '1'));
+    for (std::size_t i = 10; i < v.size(); ++i)
+        assert(v[i] == false);
+  }
+  {
+    std::string s("xxxbababababaxxxx");
+    std::bitset<N> v(s, 3, 10, 'a', 'b');
+    std::size_t M = std::min<std::size_t>(v.size(), 10);
+    for (std::size_t i = 0; i < M; ++i)
+        assert(v[i] == (s[3 + M - 1 - i] == 'b'));
+    for (std::size_t i = 10; i < v.size(); ++i)
+        assert(v[i] == false);
+  }
+}
+
+struct Nonsense {
+    virtual ~Nonsense() {}
+};
+
+TEST_CONSTEXPR_CXX23 void test_for_non_eager_instantiation() {
+    // Ensure we don't accidentally instantiate `std::basic_string<Nonsense>`
+    // since it may not be well formed and can cause an error in the
+    // non-immediate context.
+    static_assert(!std::is_constructible<std::bitset<3>, Nonsense*>::value, "");
+    static_assert(!std::is_constructible<std::bitset<3>, Nonsense*, size_t, Nonsense&, Nonsense&>::value, "");
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_string_ctor<0>();
+  test_string_ctor<1>();
+  test_string_ctor<31>();
+  test_string_ctor<32>();
+  test_string_ctor<33>();
+  test_string_ctor<63>();
+  test_string_ctor<64>();
+  test_string_ctor<65>();
+  test_string_ctor<1000>();
+  test_for_non_eager_instantiation();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/ull_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/ull_ctor.pass.cpp
new file mode 100644
index 0000000..c3c3049
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.cons/ull_ctor.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset(unsigned long long val); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <algorithm> // for 'min' and 'max'
+#include <cstddef>
+
+#include "test_macros.h"
+
+TEST_MSVC_DIAGNOSTIC_IGNORED(6294) // Ill-defined for-loop:  initial condition does not satisfy test.  Loop body not executed.
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_val_ctor()
+{
+    {
+        TEST_CONSTEXPR std::bitset<N> v(0xAAAAAAAAAAAAAAAAULL);
+        assert(v.size() == N);
+        std::size_t M = std::min<std::size_t>(v.size(), 64);
+        for (std::size_t i = 0; i < M; ++i)
+            assert(v[i] == ((i & 1) != 0));
+        for (std::size_t i = M; i < v.size(); ++i)
+            assert(v[i] == false);
+    }
+#if TEST_STD_VER >= 11
+    {
+        constexpr std::bitset<N> v(0xAAAAAAAAAAAAAAAAULL);
+        static_assert(v.size() == N, "");
+    }
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_val_ctor<0>();
+  test_val_ctor<1>();
+  test_val_ctor<31>();
+  test_val_ctor<32>();
+  test_val_ctor<33>();
+  test_val_ctor<63>();
+  test_val_ctor<64>();
+  test_val_ctor<65>();
+  test_val_ctor<1000>();
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.hash/bitset.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.hash/bitset.pass.cpp
new file mode 100644
index 0000000..2e407ad
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.hash/bitset.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template <class T>
+// struct hash
+// {
+//     size_t operator()(T val) const;
+// };
+
+#include <bitset>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+void
+test()
+{
+    typedef std::bitset<N> T;
+    typedef std::hash<T> H;
+#if TEST_STD_VER <= 14
+    static_assert((std::is_same<typename H::argument_type, T>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+    ASSERT_NOEXCEPT(H()(T()));
+
+    H h;
+    T bs(static_cast<unsigned long long>(N));
+    const std::size_t result = h(bs);
+    LIBCPP_ASSERT(result == N);
+    ((void)result); // Prevent unused warning
+}
+
+int main(int, char**)
+{
+    test<0>();
+    test<10>();
+    test<100>();
+    test<1000>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.hash/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.hash/enabled_hash.pass.cpp
new file mode 100644
index 0000000..0e34a5f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.hash/enabled_hash.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <bitset>
+
+// Test that <bitset> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <bitset>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+  {
+    test_hash_enabled_for_type<std::bitset<0> >();
+    test_hash_enabled_for_type<std::bitset<1> >();
+    test_hash_enabled_for_type<std::bitset<1024> >();
+    test_hash_enabled_for_type<std::bitset<100000> >();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/all.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/all.pass.cpp
new file mode 100644
index 0000000..8b27ffc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/all.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool all() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_all() {
+    std::bitset<N> v;
+    v.reset();
+    assert(v.all() == (N == 0));
+    v.set();
+    assert(v.all() == true);
+    if (v.size() > 1) {
+        v[N/2] = false;
+        assert(v.all() == false);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_all<0>();
+  test_all<1>();
+  test_all<31>();
+  test_all<32>();
+  test_all<33>();
+  test_all<63>();
+  test_all<64>();
+  test_all<65>();
+  test_all<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/any.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/any.pass.cpp
new file mode 100644
index 0000000..f53a527
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/any.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool any() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_any() {
+    std::bitset<N> v;
+    v.reset();
+    assert(v.any() == false);
+    v.set();
+    assert(v.any() == (N != 0));
+    if (v.size() > 1) {
+        v[N/2] = false;
+        assert(v.any() == true);
+        v.reset();
+        v[N/2] = true;
+        assert(v.any() == true);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_any<0>();
+  test_any<1>();
+  test_any<31>();
+  test_any<32>();
+  test_any<33>();
+  test_any<63>();
+  test_any<64>();
+  test_any<65>();
+  test_any<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/count.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/count.pass.cpp
new file mode 100644
index 0000000..4a21f45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/count.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// size_t count() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_count() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        const std::bitset<N> v = cases[c];
+        std::size_t c1 = v.count();
+        std::size_t c2 = 0;
+        for (std::size_t i = 0; i < v.size(); ++i)
+            if (v[i])
+                ++c2;
+        assert(c1 == c2);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_count<0>();
+  test_count<1>();
+  test_count<31>();
+  test_count<32>();
+  test_count<33>();
+  test_count<63>();
+  test_count<64>();
+  test_count<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_count<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_all.pass.cpp
new file mode 100644
index 0000000..79fa505
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_all.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& flip(); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_flip_all() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> v1 = cases[c];
+        std::bitset<N> v2 = v1;
+        v2.flip();
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v2[i] == ~v1[i]);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_flip_all<0>();
+  test_flip_all<1>();
+  test_flip_all<31>();
+  test_flip_all<32>();
+  test_flip_all<33>();
+  test_flip_all<63>();
+  test_flip_all<64>();
+  test_flip_all<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_flip_all<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_one.out_of_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_one.out_of_range.pass.cpp
new file mode 100644
index 0000000..1e49fbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_one.out_of_range.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// bitset<N>& flip(size_t pos); // constexpr since C++23
+
+// Make sure we throw std::out_of_range when calling flip() on an OOB index.
+
+#include <bitset>
+#include <cassert>
+#include <stdexcept>
+
+int main(int, char**) {
+    {
+        std::bitset<0> v;
+        try { v.flip(0); assert(false); } catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<1> v("0");
+        try { v.flip(2); assert(false); } catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<10> v("0000000000");
+        try { v.flip(10); assert(false); } catch (std::out_of_range const&) { }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_one.pass.cpp
new file mode 100644
index 0000000..adb8d05
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/flip_one.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& flip(size_t pos); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_flip_one() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> v = cases[c];
+        if (v.size() > 0) {
+            std::size_t middle = v.size() / 2;
+            v.flip(middle);
+            bool b = v[middle];
+            assert(v[middle] == b);
+            v.flip(middle);
+            assert(v[middle] != b);
+            v.flip(middle);
+            assert(v[middle] == b);
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_flip_one<0>();
+  test_flip_one<1>();
+  test_flip_one<31>();
+  test_flip_one<32>();
+  test_flip_one<33>();
+  test_flip_one<63>();
+  test_flip_one<64>();
+  test_flip_one<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_flip_one<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/index.pass.cpp
new file mode 100644
index 0000000..8d3aeca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/index.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>::reference operator[](size_t pos); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_index() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> v1 = cases[c];
+        if (v1.size() > 0) {
+            assert(v1[N/2] == v1.test(N/2));
+            typename std::bitset<N>::reference r = v1[N/2];
+            assert(r == v1.test(N/2));
+            typename std::bitset<N>::reference r2 = v1[N/2];
+            r = r2;
+            assert(r == v1.test(N/2));
+            r = false;
+            assert(r == false);
+            assert(v1.test(N/2) == false);
+            r = true;
+            assert(r == true);
+            assert(v1.test(N/2) == true);
+            bool b = ~r;
+            assert(r == true);
+            assert(v1.test(N/2) == true);
+            assert(b == false);
+            r.flip();
+            assert(r == false);
+            assert(v1.test(N/2) == false);
+        }
+        ASSERT_SAME_TYPE(decltype(v1[0]), typename std::bitset<N>::reference);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_index<0>();
+  test_index<1>();
+  test_index<31>();
+  test_index<32>();
+  test_index<33>();
+  test_index<63>();
+  test_index<64>();
+  test_index<65>();
+
+  std::bitset<1> set;
+  set[0] = false;
+  auto b = set[0];
+  set[0] = true;
+  assert(b);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_index<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/index_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/index_const.pass.cpp
new file mode 100644
index 0000000..77eb905
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/index_const.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// constexpr bool operator[](size_t pos) const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_index_const() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> const v = cases[c];
+        if (v.size() > 0) {
+            assert(v[N/2] == v.test(N/2));
+        }
+    }
+#if !defined(_LIBCPP_VERSION) || defined(_LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL)
+    ASSERT_SAME_TYPE(decltype(cases[0][0]), bool);
+#else
+    ASSERT_SAME_TYPE(decltype(cases[0][0]), typename std::bitset<N>::const_reference);
+#endif
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_index_const<0>();
+  test_index_const<1>();
+  test_index_const<31>();
+  test_index_const<32>();
+  test_index_const<33>();
+  test_index_const<63>();
+  test_index_const<64>();
+  test_index_const<65>();
+
+  std::bitset<1> set_;
+  set_[0] = false;
+  const auto& set = set_;
+  auto b = set[0];
+  set_[0] = true;
+#if !defined(_LIBCPP_VERSION) || defined(_LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL)
+  assert(!b);
+#else
+  assert(b);
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_index_const<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/left_shift.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/left_shift.pass.cpp
new file mode 100644
index 0000000..64c2a2c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/left_shift.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N> operator<<(size_t pos) const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_left_shift() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        for (std::size_t s = 0; s <= N+1; ++s) {
+            std::bitset<N> v1 = cases[c];
+            std::bitset<N> v2 = v1;
+            assert((v1 <<= s) == (v2 << s));
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_left_shift<0>();
+  test_left_shift<1>();
+  test_left_shift<31>();
+  test_left_shift<32>();
+  test_left_shift<33>();
+  test_left_shift<63>();
+  test_left_shift<64>();
+  test_left_shift<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_left_shift<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/left_shift_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/left_shift_eq.pass.cpp
new file mode 100644
index 0000000..521a4ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/left_shift_eq.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& operator<<=(size_t pos); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 bool test_left_shift() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        for (std::size_t s = 0; s <= N+1; ++s) {
+            std::bitset<N> v1 = cases[c];
+            std::bitset<N> v2 = v1;
+            v1 <<= s;
+            for (std::size_t i = 0; i < v1.size(); ++i)
+                if (i < s)
+                    assert(v1[i] == 0);
+                else
+                    assert(v1[i] == v2[i-s]);
+        }
+    }
+    return true;
+}
+
+int main(int, char**) {
+  test_left_shift<0>();
+  test_left_shift<1>();
+  test_left_shift<31>();
+  test_left_shift<32>();
+  test_left_shift<33>();
+  test_left_shift<63>();
+  test_left_shift<64>();
+  test_left_shift<65>();
+  test_left_shift<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test_left_shift<0>());
+  static_assert(test_left_shift<1>());
+  static_assert(test_left_shift<31>());
+  static_assert(test_left_shift<32>());
+  static_assert(test_left_shift<33>());
+  static_assert(test_left_shift<63>());
+  static_assert(test_left_shift<64>());
+  static_assert(test_left_shift<65>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/none.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/none.pass.cpp
new file mode 100644
index 0000000..4dbe3a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/none.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool none() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_none() {
+    std::bitset<N> v;
+    v.reset();
+    assert(v.none() == true);
+    v.set();
+    assert(v.none() == (N == 0));
+    if (v.size() > 1) {
+        v[N/2] = false;
+        assert(v.none() == false);
+        v.reset();
+        v[N/2] = true;
+        assert(v.none() == false);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_none<0>();
+  test_none<1>();
+  test_none<31>();
+  test_none<32>();
+  test_none<33>();
+  test_none<63>();
+  test_none<64>();
+  test_none<65>();
+  test_none<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/not_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/not_all.pass.cpp
new file mode 100644
index 0000000..ddfcf76
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/not_all.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N> operator~() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_not_all() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> v1 = cases[c];
+        std::bitset<N> v2 = ~v1;
+        for (std::size_t i = 0; i < v1.size(); ++i)
+            assert(v2[i] == ~v1[i]);
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_not_all<0>();
+  test_not_all<1>();
+  test_not_all<31>();
+  test_not_all<32>();
+  test_not_all<33>();
+  test_not_all<63>();
+  test_not_all<64>();
+  test_not_all<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_not_all<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_and_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_and_eq.pass.cpp
new file mode 100644
index 0000000..e8ab264
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_and_eq.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& operator&=(const bitset<N>& rhs); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_op_and_eq() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c1 = 0; c1 != cases.size(); ++c1) {
+        for (std::size_t c2 = 0; c2 != cases.size(); ++c2) {
+            std::bitset<N> v1 = cases[c1];
+            std::bitset<N> v2 = cases[c2];
+            std::bitset<N> v3 = v1;
+            v1 &= v2;
+            for (std::size_t i = 0; i < v1.size(); ++i)
+                assert(v1[i] == (v3[i] && v2[i]));
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_op_and_eq<0>();
+  test_op_and_eq<1>();
+  test_op_and_eq<31>();
+  test_op_and_eq<32>();
+  test_op_and_eq<33>();
+  test_op_and_eq<63>();
+  test_op_and_eq<64>();
+  test_op_and_eq<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_op_and_eq<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_eq_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_eq_eq.pass.cpp
new file mode 100644
index 0000000..98b602d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_eq_eq.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test:
+
+// bool operator==(const bitset<N>& rhs) const; // constexpr since C++23
+// bool operator!=(const bitset<N>& rhs) const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_equality() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> const v1 = cases[c];
+        std::bitset<N> v2 = v1;
+        assert(v1 == v2);
+        if (v1.size() > 0) {
+            v2[N/2].flip();
+            assert(v1 != v2);
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_equality<0>();
+  test_equality<1>();
+  test_equality<31>();
+  test_equality<32>();
+  test_equality<33>();
+  test_equality<63>();
+  test_equality<64>();
+  test_equality<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_equality<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_or_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_or_eq.pass.cpp
new file mode 100644
index 0000000..0d0d624
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_or_eq.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& operator|=(const bitset<N>& rhs); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_op_or_eq() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c1 = 0; c1 != cases.size(); ++c1) {
+        for (std::size_t c2 = 0; c2 != cases.size(); ++c2) {
+            std::bitset<N> v1 = cases[c1];
+            std::bitset<N> v2 = cases[c2];
+            std::bitset<N> v3 = v1;
+            v1 |= v2;
+            for (std::size_t i = 0; i < v1.size(); ++i)
+                assert(v1[i] == (v3[i] || v2[i]));
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_op_or_eq<0>();
+  test_op_or_eq<1>();
+  test_op_or_eq<31>();
+  test_op_or_eq<32>();
+  test_op_or_eq<33>();
+  test_op_or_eq<63>();
+  test_op_or_eq<64>();
+  test_op_or_eq<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_op_or_eq<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_xor_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_xor_eq.pass.cpp
new file mode 100644
index 0000000..af4e4a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/op_xor_eq.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& operator^=(const bitset<N>& rhs); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 bool test_op_xor_eq() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c1 = 0; c1 != cases.size(); ++c1) {
+        for (std::size_t c2 = 0; c2 != cases.size(); ++c2) {
+            std::bitset<N> v1 = cases[c1];
+            std::bitset<N> v2 = cases[c2];
+            std::bitset<N> v3 = v1;
+            v1 ^= v2;
+            for (std::size_t i = 0; i < v1.size(); ++i)
+                assert(v1[i] == (v3[i] != v2[i]));
+        }
+    }
+    return true;
+}
+
+int main(int, char**) {
+  test_op_xor_eq<0>();
+  test_op_xor_eq<1>();
+  test_op_xor_eq<31>();
+  test_op_xor_eq<32>();
+  test_op_xor_eq<33>();
+  test_op_xor_eq<63>();
+  test_op_xor_eq<64>();
+  test_op_xor_eq<65>();
+  test_op_xor_eq<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test_op_xor_eq<0>());
+  static_assert(test_op_xor_eq<1>());
+  static_assert(test_op_xor_eq<31>());
+  static_assert(test_op_xor_eq<32>());
+  static_assert(test_op_xor_eq<33>());
+  static_assert(test_op_xor_eq<63>());
+  static_assert(test_op_xor_eq<64>());
+  static_assert(test_op_xor_eq<65>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_all.pass.cpp
new file mode 100644
index 0000000..9f77cca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_all.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& reset(); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_reset_all() {
+    std::bitset<N> v;
+    v.set();
+    v.reset();
+    for (std::size_t i = 0; i < v.size(); ++i)
+        assert(!v[i]);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_reset_all<0>();
+  test_reset_all<1>();
+  test_reset_all<31>();
+  test_reset_all<32>();
+  test_reset_all<33>();
+  test_reset_all<63>();
+  test_reset_all<64>();
+  test_reset_all<65>();
+  test_reset_all<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_one.out_of_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_one.out_of_range.pass.cpp
new file mode 100644
index 0000000..4dc854a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_one.out_of_range.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// bitset<N>& reset(size_t pos); // constexpr since C++23
+
+// Make sure we throw std::out_of_range when calling reset() on an OOB index.
+
+#include <bitset>
+#include <cassert>
+#include <stdexcept>
+
+int main(int, char**) {
+    {
+        std::bitset<0> v;
+        try { v.reset(0); assert(false); } catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<1> v("0");
+        try { v.reset(2); assert(false); } catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<10> v("0000000000");
+        try { v.reset(10); assert(false); } catch (std::out_of_range const&) { }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_one.pass.cpp
new file mode 100644
index 0000000..0517e5a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/reset_one.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& reset(size_t pos); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+TEST_MSVC_DIAGNOSTIC_IGNORED(6294) // Ill-defined for-loop:  initial condition does not satisfy test.  Loop body not executed.
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_reset_one() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        for (std::size_t i = 0; i != N; ++i) {
+            std::bitset<N> v = cases[c];
+            v.reset(i);
+            assert(v[i] == false);
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_reset_one<0>();
+  test_reset_one<1>();
+  test_reset_one<31>();
+  test_reset_one<32>();
+  test_reset_one<33>();
+  test_reset_one<63>();
+  test_reset_one<64>();
+  test_reset_one<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_reset_one<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/right_shift.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/right_shift.pass.cpp
new file mode 100644
index 0000000..ec023dc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/right_shift.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N> operator>>(size_t pos) const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 bool test_right_shift() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        for (std::size_t s = 0; s <= N+1; ++s) {
+            std::bitset<N> v1 = cases[c];
+            std::bitset<N> v2 = v1;
+            assert((v1 >>= s) == (v2 >> s));
+        }
+    }
+    return true;
+}
+
+int main(int, char**) {
+  test_right_shift<0>();
+  test_right_shift<1>();
+  test_right_shift<31>();
+  test_right_shift<32>();
+  test_right_shift<33>();
+  test_right_shift<63>();
+  test_right_shift<64>();
+  test_right_shift<65>();
+  test_right_shift<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test_right_shift<0>());
+  static_assert(test_right_shift<1>());
+  static_assert(test_right_shift<31>());
+  static_assert(test_right_shift<32>());
+  static_assert(test_right_shift<33>());
+  static_assert(test_right_shift<63>());
+  static_assert(test_right_shift<64>());
+  static_assert(test_right_shift<65>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/right_shift_eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/right_shift_eq.pass.cpp
new file mode 100644
index 0000000..bf18252
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/right_shift_eq.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& operator<<=(size_t pos); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 bool test_right_shift() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        for (std::size_t s = 0; s <= N+1; ++s) {
+            std::bitset<N> v1 = cases[c];
+            std::bitset<N> v2 = v1;
+            v1 >>= s;
+            for (std::size_t i = 0; i < v1.size(); ++i)
+                if (i + s < v1.size())
+                    assert(v1[i] == v2[i + s]);
+                else
+                    assert(v1[i] == 0);
+        }
+    }
+    return true;
+}
+
+int main(int, char**) {
+  test_right_shift<0>();
+  test_right_shift<1>();
+  test_right_shift<31>();
+  test_right_shift<32>();
+  test_right_shift<33>();
+  test_right_shift<63>();
+  test_right_shift<64>();
+  test_right_shift<65>();
+  test_right_shift<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test_right_shift<0>());
+  static_assert(test_right_shift<1>());
+  static_assert(test_right_shift<31>());
+  static_assert(test_right_shift<32>());
+  static_assert(test_right_shift<33>());
+  static_assert(test_right_shift<63>());
+  static_assert(test_right_shift<64>());
+  static_assert(test_right_shift<65>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_all.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_all.pass.cpp
new file mode 100644
index 0000000..6324541
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_all.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& set(); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_set_all() {
+    std::bitset<N> v;
+    v.set();
+    for (std::size_t i = 0; i < v.size(); ++i)
+        assert(v[i]);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_set_all<0>();
+  test_set_all<1>();
+  test_set_all<31>();
+  test_set_all<32>();
+  test_set_all<33>();
+  test_set_all<63>();
+  test_set_all<64>();
+  test_set_all<65>();
+  test_set_all<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_one.out_of_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_one.out_of_range.pass.cpp
new file mode 100644
index 0000000..2a7eb11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_one.out_of_range.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// bitset<N>& set(size_t pos, bool val = true); // constexpr since C++23
+
+// Make sure we throw std::out_of_range when calling set() on an OOB index.
+
+#include <bitset>
+#include <cassert>
+#include <stdexcept>
+
+int main(int, char**) {
+    {
+        std::bitset<0> v;
+        try { v.set(0); assert(false); } catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<1> v("0");
+        try { v.set(2); assert(false); } catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<10> v("0000000000");
+        try { v.set(10); assert(false); } catch (std::out_of_range const&) { }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_one.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_one.pass.cpp
new file mode 100644
index 0000000..e5b494d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/set_one.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N>& set(size_t pos, bool val = true); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_set_one() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> v = cases[c];
+        if (v.size() > 0) {
+            std::size_t middle = v.size() / 2;
+            v.set(middle);
+            assert(v[middle] == true);
+            v.set(middle, false);
+            assert(v[middle] == false);
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_set_one<0>();
+  test_set_one<1>();
+  test_set_one<31>();
+  test_set_one<32>();
+  test_set_one<33>();
+  test_set_one<63>();
+  test_set_one<64>();
+  test_set_one<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_set_one<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/size.pass.cpp
new file mode 100644
index 0000000..0237fa3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/size.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// size_t count() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_size() {
+    const std::bitset<N> v;
+    assert(v.size() == N);
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_size<0>();
+  test_size<1>();
+  test_size<31>();
+  test_size<32>();
+  test_size<33>();
+  test_size<63>();
+  test_size<64>();
+  test_size<65>();
+  test_size<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/test.out_of_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/test.out_of_range.pass.cpp
new file mode 100644
index 0000000..37009c6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/test.out_of_range.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+
+// constexpr bool test(size_t pos) const;
+
+// Make sure we throw std::out_of_range when calling test() on an OOB index.
+
+#include <bitset>
+#include <cassert>
+#include <stdexcept>
+
+int main(int, char**) {
+    {
+        std::bitset<0> v;
+        try { (void) v.test(0); assert(false); }
+        catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<1> v("0");
+        try { (void) v.test(2); assert(false); }
+        catch (std::out_of_range const&) { }
+    }
+    {
+        std::bitset<10> v("0000000000");
+        try { (void) v.test(10); assert(false); }
+        catch (std::out_of_range const&) { }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/test.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/test.pass.cpp
new file mode 100644
index 0000000..92e6496
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/test.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bool test(size_t pos) const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_test() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> const v = cases[c];
+        if (v.size() > 0) {
+            std::size_t middle = v.size() / 2;
+            bool b = v.test(middle);
+            assert(b == v[middle]);
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_test<0>();
+  test_test<1>();
+  test_test<31>();
+  test_test<32>();
+  test_test<33>();
+  test_test<63>();
+  test_test<64>();
+  test_test<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_test<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_string.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_string.pass.cpp
new file mode 100644
index 0000000..78c58f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_string.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test:
+
+// template <class charT, class traits, class Allocator>
+// basic_string<charT, traits, Allocator>
+// to_string(charT zero = charT('0'), charT one = charT('1')) const; // constexpr since C++23
+//
+// template <class charT, class traits>
+// basic_string<charT, traits, allocator<charT> > to_string() const; // constexpr since C++23
+//
+// template <class charT>
+// basic_string<charT, char_traits<charT>, allocator<charT> > to_string() const; // constexpr since C++23
+//
+// basic_string<char, char_traits<char>, allocator<char> > to_string() const; // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <memory> // for std::allocator
+#include <string>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <class CharT, std::size_t N>
+TEST_CONSTEXPR_CXX23 void check_equal(std::basic_string<CharT> const& s, std::bitset<N> const& b, CharT zero, CharT one) {
+    assert(s.size() == b.size());
+    for (std::size_t i = 0; i < b.size(); ++i) {
+        if (b[i]) {
+            assert(s[b.size() - 1 - i] == one);
+        } else {
+            assert(s[b.size() - 1 - i] == zero);
+        }
+    }
+}
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 bool test_to_string() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c = 0; c != cases.size(); ++c) {
+        std::bitset<N> const v = cases[c];
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >();
+            check_equal(s, v, L'0', L'1');
+        }
+        {
+            std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >();
+            check_equal(s, v, L'0', L'1');
+        }
+#endif
+        {
+            std::string s = v.template to_string<char>();
+            check_equal(s, v, '0', '1');
+        }
+        {
+            std::string s = v.to_string();
+            check_equal(s, v, '0', '1');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >('0');
+            check_equal(s, v, L'0', L'1');
+        }
+        {
+            std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >('0');
+            check_equal(s, v, L'0', L'1');
+        }
+#endif
+        {
+            std::string s = v.template to_string<char>('0');
+            check_equal(s, v, '0', '1');
+        }
+        {
+            std::string s = v.to_string('0');
+            check_equal(s, v, '0', '1');
+        }
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+        {
+            std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >('0', '1');
+            check_equal(s, v, L'0', L'1');
+        }
+        {
+            std::wstring s = v.template to_string<wchar_t, std::char_traits<wchar_t> >('0', '1');
+            check_equal(s, v, L'0', L'1');
+        }
+#endif
+        {
+            std::string s = v.template to_string<char>('0', '1');
+            check_equal(s, v, '0', '1');
+        }
+        {
+            std::string s = v.to_string('0', '1');
+            check_equal(s, v, '0', '1');
+        }
+        {
+            std::string s = v.to_string('x', 'y');
+            check_equal(s, v, 'x', 'y');
+        }
+    }
+    return true;
+}
+
+int main(int, char**) {
+  test_to_string<0>();
+  test_to_string<1>();
+  test_to_string<31>();
+  test_to_string<32>();
+  test_to_string<33>();
+  test_to_string<63>();
+  test_to_string<64>();
+  test_to_string<65>();
+  test_to_string<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test_to_string<0>());
+  static_assert(test_to_string<1>());
+  static_assert(test_to_string<31>());
+  static_assert(test_to_string<32>());
+  static_assert(test_to_string<33>());
+  static_assert(test_to_string<63>());
+  static_assert(test_to_string<64>());
+  static_assert(test_to_string<65>());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_ullong.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_ullong.pass.cpp
new file mode 100644
index 0000000..cbc8da9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_ullong.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// unsigned long long to_ullong() const; // constexpr since C++23
+
+#include <bitset>
+#include <algorithm>
+#include <type_traits>
+#include <climits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_to_ullong() {
+    const std::size_t M = sizeof(unsigned long long) * CHAR_BIT < N ? sizeof(unsigned long long) * CHAR_BIT : N;
+    const bool is_M_zero = std::integral_constant<bool, M == 0>::value; // avoid compiler warnings
+    const std::size_t X = is_M_zero ? sizeof(unsigned long long) * CHAR_BIT - 1 : sizeof(unsigned long long) * CHAR_BIT - M;
+    const unsigned long long max = is_M_zero ? 0 : (unsigned long long)(-1) >> X;
+    unsigned long long tests[] = {
+        0,
+        std::min<unsigned long long>(1, max),
+        std::min<unsigned long long>(2, max),
+        std::min<unsigned long long>(3, max),
+        std::min(max, max-3),
+        std::min(max, max-2),
+        std::min(max, max-1),
+        max
+    };
+    for (unsigned long long j : tests) {
+         std::bitset<N> v(j);
+        assert(j == v.to_ullong());
+    }
+    { // test values bigger than can fit into the bitset
+        const unsigned long long val = 0x55AAAAFFFFAAAA55ULL;
+        const bool canFit = N < sizeof(unsigned long long) * CHAR_BIT;
+        const unsigned long long mask = canFit ? (1ULL << (canFit ? N : 0)) - 1 : (unsigned long long)(-1); // avoid compiler warnings
+        std::bitset<N> v(val);
+        assert(v.to_ullong() == (val & mask)); // we shouldn't return bit patterns from outside the limits of the bitset.
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_to_ullong<0>();
+  test_to_ullong<1>();
+  test_to_ullong<31>();
+  test_to_ullong<32>();
+  test_to_ullong<33>();
+  test_to_ullong<63>();
+  test_to_ullong<64>();
+  test_to_ullong<65>();
+  test_to_ullong<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_ulong.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_ulong.pass.cpp
new file mode 100644
index 0000000..17a5e7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.members/to_ulong.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// unsigned long to_ulong() const; // constexpr since C++23
+
+#include <bitset>
+#include <algorithm>
+#include <type_traits>
+#include <limits>
+#include <climits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_to_ulong() {
+    const std::size_t M = sizeof(unsigned long) * CHAR_BIT < N ? sizeof(unsigned long) * CHAR_BIT : N;
+    const bool is_M_zero = std::integral_constant<bool, M == 0>::value; // avoid compiler warnings
+    const std::size_t X = is_M_zero ? sizeof(unsigned long) * CHAR_BIT - 1 : sizeof(unsigned long) * CHAR_BIT - M;
+    const std::size_t max = is_M_zero ? 0 : std::size_t(std::numeric_limits<unsigned long>::max()) >> X;
+    std::size_t tests[] = {
+        0,
+        std::min<std::size_t>(1, max),
+        std::min<std::size_t>(2, max),
+        std::min<std::size_t>(3, max),
+        std::min(max, max-3),
+        std::min(max, max-2),
+        std::min(max, max-1),
+        max
+    };
+    for (std::size_t j : tests) {
+        std::bitset<N> v(j);
+        assert(j == v.to_ulong());
+    }
+
+    { // test values bigger than can fit into the bitset
+        const unsigned long val = 0x5AFFFFA5UL;
+        const bool canFit = N < sizeof(unsigned long) * CHAR_BIT;
+        const unsigned long mask = canFit ? (1UL << (canFit ? N : 0)) - 1 : (unsigned long)(-1); // avoid compiler warnings
+        std::bitset<N> v(val);
+        assert(v.to_ulong() == (val & mask)); // we shouldn't return bit patterns from outside the limits of the bitset.
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_to_ulong<0>();
+  test_to_ulong<1>();
+  test_to_ulong<31>();
+  test_to_ulong<32>();
+  test_to_ulong<33>();
+  test_to_ulong<63>();
+  test_to_ulong<64>();
+  test_to_ulong<65>();
+  test_to_ulong<1000>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_and.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_and.pass.cpp
new file mode 100644
index 0000000..792f1fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_and.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N> operator&(const bitset<N>& lhs, const bitset<N>& rhs); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_op_and() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c1 = 0; c1 != cases.size(); ++c1) {
+        for (std::size_t c2 = 0; c2 != cases.size(); ++c2) {
+            std::bitset<N> v1 = cases[c1];
+            std::bitset<N> v2 = cases[c2];
+            std::bitset<N> v3 = v1;
+            assert((v1 & v2) == (v3 &= v2));
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_op_and<0>();
+  test_op_and<1>();
+  test_op_and<31>();
+  test_op_and<32>();
+  test_op_and<33>();
+  test_op_and<63>();
+  test_op_and<64>();
+  test_op_and<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_op_and<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_not.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_not.pass.cpp
new file mode 100644
index 0000000..c3ea175
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_not.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N> operator^(const bitset<N>& lhs, const bitset<N>& rhs); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_op_not() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c1 = 0; c1 != cases.size(); ++c1) {
+        for (std::size_t c2 = 0; c2 != cases.size(); ++c2) {
+            std::bitset<N> v1 = cases[c1];
+            std::bitset<N> v2 = cases[c2];
+            std::bitset<N> v3 = v1;
+            assert((v1 ^ v2) == (v3 ^= v2));
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_op_not<0>();
+  test_op_not<1>();
+  test_op_not<31>();
+  test_op_not<32>();
+  test_op_not<33>();
+  test_op_not<63>();
+  test_op_not<64>();
+  test_op_not<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_op_not<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_or.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_or.pass.cpp
new file mode 100644
index 0000000..bf2bfac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/op_or.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// bitset<N> operator|(const bitset<N>& lhs, const bitset<N>& rhs); // constexpr since C++23
+
+#include <bitset>
+#include <cassert>
+#include <cstddef>
+#include <vector>
+
+#include "../bitset_test_cases.h"
+#include "test_macros.h"
+
+template <std::size_t N>
+TEST_CONSTEXPR_CXX23 void test_op_or() {
+    std::vector<std::bitset<N> > const cases = get_test_cases<N>();
+    for (std::size_t c1 = 0; c1 != cases.size(); ++c1) {
+        for (std::size_t c2 = 0; c2 != cases.size(); ++c2) {
+            std::bitset<N> v1 = cases[c1];
+            std::bitset<N> v2 = cases[c2];
+            std::bitset<N> v3 = v1;
+            assert((v1 | v2) == (v3 |= v2));
+        }
+    }
+}
+
+TEST_CONSTEXPR_CXX23 bool test() {
+  test_op_or<0>();
+  test_op_or<1>();
+  test_op_or<31>();
+  test_op_or<32>();
+  test_op_or<33>();
+  test_op_or<63>();
+  test_op_or<64>();
+  test_op_or<65>();
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  test_op_or<1000>(); // not in constexpr because of constexpr evaluation step limits
+#if TEST_STD_VER > 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/stream_in.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/stream_in.pass.cpp
new file mode 100644
index 0000000..e04b38f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/stream_in.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// test:
+
+// template <class charT, class traits, size_t N>
+// basic_istream<charT, traits>&
+// operator>>(basic_istream<charT, traits>& is, bitset<N>& x);
+
+#include <bitset>
+#include <sstream>
+#include <cassert>
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        std::istringstream in("01011010");
+        std::bitset<8> b;
+        in >> b;
+        assert(b.to_ulong() == 0x5A);
+    }
+    {
+        // Make sure that input-streaming an empty bitset does not cause the
+        // failbit to be set (LWG 3199).
+        std::istringstream in("01011010");
+        std::bitset<0> b;
+        in >> b;
+        assert(b.to_string() == "");
+        assert(!in.bad());
+        assert(!in.fail());
+        assert(!in.eof());
+        assert(in.good());
+    }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    {
+        std::stringbuf sb;
+        std::istream is(&sb);
+        is.exceptions(std::ios::failbit);
+
+        bool threw = false;
+        try {
+            std::bitset<8> b;
+            is >> b;
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+    {
+        std::stringbuf sb;
+        std::istream is(&sb);
+        is.exceptions(std::ios::eofbit);
+
+        bool threw = false;
+        try {
+            std::bitset<8> b;
+            is >> b;
+        } catch (std::ios::failure const&) {
+            threw = true;
+        }
+
+        assert(!is.bad());
+        assert(is.fail());
+        assert(is.eof());
+        assert(threw);
+    }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/stream_out.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/stream_out.pass.cpp
new file mode 100644
index 0000000..dfdb9fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset.operators/stream_out.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-localization
+
+// test:
+
+// template <class charT, class traits, size_t N>
+// basic_ostream<charT, traits>&
+// operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x);
+
+#include <bitset>
+#include <sstream>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::ostringstream os;
+    std::bitset<8> b(0x5A);
+    os << b;
+    assert(os.str() == "01011010");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset_test_cases.h b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset_test_cases.h
new file mode 100644
index 0000000..dada9bc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/bitset_test_cases.h
@@ -0,0 +1,180 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_BITSET_TEST_CASES_H
+#define LIBCPP_TEST_BITSET_TEST_CASES_H
+
+#include <bitset>
+#include <string>
+#include <vector>
+
+#include "test_macros.h"
+
+template <int N>
+TEST_CONSTEXPR_CXX23 std::vector<std::bitset<N> > get_test_cases();
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<0> > get_test_cases<0>() {
+    std::vector<std::bitset<0> > cases;
+    cases.push_back(std::bitset<0>());
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<1> > get_test_cases<1>() {
+    std::vector<std::bitset<1> > cases;
+    cases.push_back(std::bitset<1>("0"));
+    cases.push_back(std::bitset<1>("1"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<2> > get_test_cases<2>() {
+    std::vector<std::bitset<2> > cases;
+    cases.push_back(std::bitset<2>("00"));
+    cases.push_back(std::bitset<2>("01"));
+    cases.push_back(std::bitset<2>("10"));
+    cases.push_back(std::bitset<2>("11"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<31> > get_test_cases<31>() {
+    std::vector<std::bitset<31> > cases;
+    cases.push_back(std::bitset<31>("0000000000000000000000000000000"));
+    cases.push_back(std::bitset<31>("0000000000000000000000000000001"));
+    cases.push_back(std::bitset<31>("1000000000000000000000000000000"));
+    cases.push_back(std::bitset<31>("1000000000000000000000000000001"));
+    cases.push_back(std::bitset<31>("1000000000000000000001000000001"));
+    cases.push_back(std::bitset<31>("0000000000000000111111111111111"));
+    cases.push_back(std::bitset<31>("1000000000000000111111111111111"));
+    cases.push_back(std::bitset<31>("1111111111111111000000000000000"));
+    cases.push_back(std::bitset<31>("1111111111111111000000000000001"));
+    cases.push_back(std::bitset<31>("1010101010101010101010101010101"));
+    cases.push_back(std::bitset<31>("0101010101010101010101010101010"));
+    cases.push_back(std::bitset<31>("1111111111111111111111111111111"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<32> > get_test_cases<32>() {
+    std::vector<std::bitset<32> > cases;
+    cases.push_back(std::bitset<32>("00000000000000000000000000000000"));
+    cases.push_back(std::bitset<32>("00000000000000000000000000000001"));
+    cases.push_back(std::bitset<32>("10000000000000000000000000000000"));
+    cases.push_back(std::bitset<32>("10000000000000000000000000000001"));
+    cases.push_back(std::bitset<32>("10000000000000000000111000000001"));
+    cases.push_back(std::bitset<32>("00000000000000001111111111111111"));
+    cases.push_back(std::bitset<32>("10000000000000001111111111111111"));
+    cases.push_back(std::bitset<32>("11111111111111110000000000000000"));
+    cases.push_back(std::bitset<32>("11111111111111110000000000000001"));
+    cases.push_back(std::bitset<32>("10101010101010101010101010101010"));
+    cases.push_back(std::bitset<32>("01010101010101010101010101010101"));
+    cases.push_back(std::bitset<32>("11111111111111111111111111111111"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<33> > get_test_cases<33>() {
+    std::vector<std::bitset<33> > cases;
+    cases.push_back(std::bitset<33>("000000000000000000000000000000000"));
+    cases.push_back(std::bitset<33>("000000000000000000000000000000001"));
+    cases.push_back(std::bitset<33>("100000000000000000000000000000000"));
+    cases.push_back(std::bitset<33>("100000000000000000000000000000001"));
+    cases.push_back(std::bitset<33>("100000000000000000001110000000001"));
+    cases.push_back(std::bitset<33>("000000000000000011111111111111111"));
+    cases.push_back(std::bitset<33>("100000000000000011111111111111111"));
+    cases.push_back(std::bitset<33>("111111111111111100000000000000000"));
+    cases.push_back(std::bitset<33>("111111111111111100000000000000001"));
+    cases.push_back(std::bitset<33>("101010101010101010101010101010101"));
+    cases.push_back(std::bitset<33>("010101010101010101010101010101010"));
+    cases.push_back(std::bitset<33>("111111111111111111111111111111111"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<63> > get_test_cases<63>() {
+    std::vector<std::bitset<63> > cases;
+    cases.push_back(std::bitset<63>("000000000000000000000000000000000000000000000000000000000000000"));
+    cases.push_back(std::bitset<63>("000000000000000000000000000000000000000000000000000000000000001"));
+    cases.push_back(std::bitset<63>("100000000000000000000000000000000000000000000000000000000000000"));
+    cases.push_back(std::bitset<63>("100000000000000000000000000000000000000000000000000000000000001"));
+    cases.push_back(std::bitset<63>("100000000000000000000000001111100000000000000000000000000000001"));
+    cases.push_back(std::bitset<63>("000000000000000000000000000000001111111111111111111111111111111"));
+    cases.push_back(std::bitset<63>("100000000000000000000000000000001111111111111111111111111111111"));
+    cases.push_back(std::bitset<63>("111111111111111111111111111111110000000000000000000000000000000"));
+    cases.push_back(std::bitset<63>("111111111111111111111111111111110000000000000000000000000000001"));
+    cases.push_back(std::bitset<63>("101010101010101010101010101010101010101010101010101010101010101"));
+    cases.push_back(std::bitset<63>("010101010101010101010101010101010101010101010101010101010101010"));
+    cases.push_back(std::bitset<63>("111111111111111111111111111111111111111111111111111111111111111"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<64> > get_test_cases<64>() {
+    std::vector<std::bitset<64> > cases;
+    cases.push_back(std::bitset<64>("0000000000000000000000000000000000000000000000000000000000000000"));
+    cases.push_back(std::bitset<64>("0000000000000000000000000000000000000000000000000000000000000001"));
+    cases.push_back(std::bitset<64>("1000000000000000000000000000000000000000000000000000000000000000"));
+    cases.push_back(std::bitset<64>("1000000000000000000000000000000000000000000000000000000000000001"));
+    cases.push_back(std::bitset<64>("1000000000000000000000000011111000000000000000000000000000000001"));
+    cases.push_back(std::bitset<64>("0000000000000000000000000000000011111111111111111111111111111111"));
+    cases.push_back(std::bitset<64>("1000000000000000000000000000000011111111111111111111111111111111"));
+    cases.push_back(std::bitset<64>("1111111111111111111111111111111100000000000000000000000000000000"));
+    cases.push_back(std::bitset<64>("1111111111111111111111111111111100000000000000000000000000000001"));
+    cases.push_back(std::bitset<64>("1010101010101010101010101010101010101010101010101010101010101010"));
+    cases.push_back(std::bitset<64>("0101010101010101010101010101010101010101010101010101010101010101"));
+    cases.push_back(std::bitset<64>("1111111111111111111111111111111111111111111111111111111111111111"));
+    return cases;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<65> > get_test_cases<65>() {
+    std::vector<std::bitset<65> > cases;
+    cases.push_back(std::bitset<65>("00000000000000000000000000000000000000000000000000000000000000000"));
+    cases.push_back(std::bitset<65>("00000000000000000000000000000000000000000000000000000000000000001"));
+    cases.push_back(std::bitset<65>("10000000000000000000000000000000000000000000000000000000000000000"));
+    cases.push_back(std::bitset<65>("10000000000000000000000000000000000000000000000000000000000000001"));
+    cases.push_back(std::bitset<65>("10000000000000000000000000011111000000000000000000000000000000001"));
+    cases.push_back(std::bitset<65>("00000000000000000000000000000000011111111111111111111111111111111"));
+    cases.push_back(std::bitset<65>("10000000000000000000000000000000011111111111111111111111111111111"));
+    cases.push_back(std::bitset<65>("11111111111111111111111111111111000000000000000000000000000000000"));
+    cases.push_back(std::bitset<65>("11111111111111111111111111111111000000000000000000000000000000001"));
+    cases.push_back(std::bitset<65>("10101010101010101010101010101010101010101010101010101010101010101"));
+    cases.push_back(std::bitset<65>("01010101010101010101010101010101010101010101010101010101010101010"));
+    cases.push_back(std::bitset<65>("11111111111111111111111111111111111111111111111111111111111111111"));
+    return cases;
+}
+
+TEST_CONSTEXPR_CXX23 inline std::string str_repeat(std::string s, unsigned int n) {
+    std::string res = s;
+    for (; n != 0; --n)
+        res += s;
+    return res;
+}
+
+template <>
+TEST_CONSTEXPR_CXX23 inline std::vector<std::bitset<1000> > get_test_cases<1000>() {
+    std::vector<std::bitset<1000> > cases;
+    cases.push_back(std::bitset<1000>(std::string(1000, '0')));
+    cases.push_back(std::bitset<1000>(std::string(999, '0') + std::string(1, '1')));
+    cases.push_back(std::bitset<1000>(std::string(1, '1') + std::string(999, '0')));
+    cases.push_back(std::bitset<1000>(std::string(1, '1') + std::string(998, '0') + std::string(1, '1')));
+    cases.push_back(std::bitset<1000>(std::string(1, '1') + std::string(400, '0') + std::string(99, '1') + std::string(499, '0') + std::string(1, '1')));
+    cases.push_back(std::bitset<1000>(std::string(500, '0') + std::string(500, '1')));
+    cases.push_back(std::bitset<1000>(std::string(1, '1') + std::string(499, '0') + std::string(500, '1')));
+    cases.push_back(std::bitset<1000>(std::string(500, '1') + std::string(500, '0')));
+    cases.push_back(std::bitset<1000>(std::string(500, '1') + std::string(499, '0') + std::string(1, '1')));
+    cases.push_back(std::bitset<1000>(str_repeat("10", 500)));
+    cases.push_back(std::bitset<1000>(str_repeat("01", 500)));
+    cases.push_back(std::bitset<1000>(std::string(1000, '1')));
+
+    return cases;
+}
+
+#endif // !LIBCPP_TEST_BITSET_TEST_CASES_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/includes.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/includes.pass.cpp
new file mode 100644
index 0000000..b58dac5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/template.bitset/includes.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test that <bitset> includes <string> and <iosfwd>
+
+#include <bitset>
+
+#include "test_macros.h"
+
+template <class> void test_typedef() {}
+
+int main(int, char**)
+{
+  { // test for <string>
+    std::string s; ((void)s);
+  }
+  { // test for <iosfwd>
+    test_typedef<std::ios>();
+    test_typedef<std::istream>();
+    test_typedef<std::ostream>();
+    test_typedef<std::iostream>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.general/ignore.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.general/ignore.pass.cpp
new file mode 100644
index 0000000..769c55e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.general/ignore.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// constexpr unspecified ignore;
+
+// UNSUPPORTED: c++03
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+
+constexpr bool test_ignore_constexpr()
+{
+#if TEST_STD_VER > 11
+    { // Test that std::ignore provides constexpr converting assignment.
+        auto& res = (std::ignore = 42);
+        assert(&res == &std::ignore);
+    }
+    { // Test that std::ignore provides constexpr copy/move constructors
+        auto copy = std::ignore;
+        auto moved = std::move(copy);
+        ((void)moved);
+    }
+    { // Test that std::ignore provides constexpr copy/move assignment
+        auto copy = std::ignore;
+        copy = std::ignore;
+        auto moved = std::ignore;
+        moved = std::move(copy);
+    }
+#endif
+    return true;
+}
+
+int main(int, char**) {
+    {
+        constexpr auto& ignore_v = std::ignore;
+        ((void)ignore_v);
+    }
+    {
+        static_assert(test_ignore_constexpr(), "");
+    }
+    {
+        LIBCPP_STATIC_ASSERT(std::is_trivial<decltype(std::ignore)>::value, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.general/tuple.smartptr.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.general/tuple.smartptr.pass.cpp
new file mode 100644
index 0000000..0068a4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.general/tuple.smartptr.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+
+// UNSUPPORTED: c++03
+
+//  Tuples of smart pointers; based on bug #18350
+//  auto_ptr doesn't have a copy constructor that takes a const &, but tuple does.
+
+#include <tuple>
+#include <memory>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+    {
+    std::tuple<std::unique_ptr<char>> up;
+    std::tuple<std::shared_ptr<char>> sp;
+    std::tuple<std::weak_ptr  <char>> wp;
+    }
+    {
+    std::tuple<std::unique_ptr<char[]>> up;
+    std::tuple<std::shared_ptr<char[]>> sp;
+    std::tuple<std::weak_ptr  <char[]>> wp;
+    }
+    // Smart pointers of type 'T[N]' are not tested here since they are not
+    // supported by the standard nor by libc++'s implementation.
+    // See https://reviews.llvm.org/D21320 for more information.
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/PR27375.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/PR27375.pass.cpp
new file mode 100644
index 0000000..8560313
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/PR27375.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Regression test for https://llvm.org/PR27375
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+
+int main(int, char**) {
+    std::tuple<int&>(std::tuple<int&&>(42));
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/PR38601.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/PR38601.pass.cpp
new file mode 100644
index 0000000..2b581b4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/PR38601.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Regression test for https://llvm.org/PR38601
+
+// UNSUPPORTED: c++03
+
+#include <cassert>
+#include <tuple>
+
+using Base = std::tuple<int, int>;
+
+struct Derived : Base {
+    template <class ...Ts>
+    Derived(int x, Ts... ts): Base(ts...), x_(x) { }
+    operator int () const { return x_; }
+    int x_;
+};
+
+int main(int, char**) {
+    Derived d(1, 2, 3);
+    Base b = static_cast<Base>(d);
+    assert(std::get<0>(b) == 2);
+    assert(std::get<1>(b) == 3);
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/TupleFunction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/TupleFunction.pass.cpp
new file mode 100644
index 0000000..8d3cbc1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/TupleFunction.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This is for bugs 18853 and 19118
+
+#include <tuple>
+#include <functional>
+
+#include "test_macros.h"
+
+struct X
+{
+    X() {}
+
+    template <class T>
+    X(T);
+
+    void operator()() {}
+};
+
+int main(int, char**)
+{
+    X x;
+    std::function<void()> f(x);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/alloc_first.h b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/alloc_first.h
new file mode 100644
index 0000000..571f795
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/alloc_first.h
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ALLOC_FIRST_H
+#define ALLOC_FIRST_H
+
+#include <cassert>
+
+#include "allocators.h"
+
+struct alloc_first
+{
+    static bool allocator_constructed;
+
+    typedef A1<int> allocator_type;
+
+    int data_;
+
+    alloc_first() : data_(0) {}
+    alloc_first(int d) : data_(d) {}
+    alloc_first(std::allocator_arg_t, const A1<int>& a)
+        : data_(0)
+    {
+        assert(a.id() == 5);
+        allocator_constructed = true;
+    }
+
+    alloc_first(std::allocator_arg_t, const A1<int>& a, int d)
+        : data_(d)
+    {
+        assert(a.id() == 5);
+        allocator_constructed = true;
+    }
+
+    alloc_first(std::allocator_arg_t, const A1<int>& a, const alloc_first& d)
+        : data_(d.data_)
+    {
+        assert(a.id() == 5);
+        allocator_constructed = true;
+    }
+
+    ~alloc_first() {data_ = -1;}
+
+    friend bool operator==(const alloc_first& x, const alloc_first& y)
+        {return x.data_ == y.data_;}
+    friend bool operator< (const alloc_first& x, const alloc_first& y)
+        {return x.data_ < y.data_;}
+};
+
+bool alloc_first::allocator_constructed = false;
+
+#endif // ALLOC_FIRST_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/alloc_last.h b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/alloc_last.h
new file mode 100644
index 0000000..a893ec0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/alloc_last.h
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ALLOC_LAST_H
+#define ALLOC_LAST_H
+
+#include <cassert>
+
+#include "allocators.h"
+
+struct alloc_last
+{
+    static bool allocator_constructed;
+
+    typedef A1<int> allocator_type;
+
+    int data_;
+
+    alloc_last() : data_(0) {}
+    alloc_last(int d) : data_(d) {}
+    alloc_last(const A1<int>& a)
+        : data_(0)
+    {
+        assert(a.id() == 5);
+        allocator_constructed = true;
+    }
+
+    alloc_last(int d, const A1<int>& a)
+        : data_(d)
+    {
+        assert(a.id() == 5);
+        allocator_constructed = true;
+    }
+
+    alloc_last(const alloc_last& d, const A1<int>& a)
+        : data_(d.data_)
+    {
+        assert(a.id() == 5);
+        allocator_constructed = true;
+    }
+
+    ~alloc_last() {data_ = -1;}
+
+    friend bool operator==(const alloc_last& x, const alloc_last& y)
+        {return x.data_ == y.data_;}
+    friend bool operator< (const alloc_last& x, const alloc_last& y)
+        {return x.data_ < y.data_;}
+};
+
+bool alloc_last::allocator_constructed = false;
+
+#endif // ALLOC_LAST_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply.pass.cpp
new file mode 100644
index 0000000..6ca3f20
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply.pass.cpp
@@ -0,0 +1,270 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// template <class F, class T> constexpr decltype(auto) apply(F &&, T &&)
+
+// Test with different ref/ptr/cv qualified argument types.
+
+#include <tuple>
+#include <array>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "type_id.h"
+
+constexpr int constexpr_sum_fn() { return 0; }
+
+template <class ...Ints>
+constexpr int constexpr_sum_fn(int x1, Ints... rest) { return x1 + constexpr_sum_fn(rest...); }
+
+struct ConstexprSumT {
+  constexpr ConstexprSumT() = default;
+  template <class ...Ints>
+  constexpr int operator()(Ints... values) const {
+      return constexpr_sum_fn(values...);
+  }
+};
+
+
+void test_constexpr_evaluation()
+{
+    constexpr ConstexprSumT sum_obj{};
+    {
+        using Tup = std::tuple<>;
+        using Fn = int(&)();
+        constexpr Tup t;
+        static_assert(std::apply(static_cast<Fn>(constexpr_sum_fn), t) == 0, "");
+        static_assert(std::apply(sum_obj, t) == 0, "");
+    }
+    {
+        using Tup = std::tuple<int>;
+        using Fn = int(&)(int);
+        constexpr Tup t(42);
+        static_assert(std::apply(static_cast<Fn>(constexpr_sum_fn), t) == 42, "");
+        static_assert(std::apply(sum_obj, t) == 42, "");
+    }
+    {
+        using Tup = std::tuple<int, long>;
+        using Fn = int(&)(int, int);
+        constexpr Tup t(42, 101);
+        static_assert(std::apply(static_cast<Fn>(constexpr_sum_fn), t) == 143, "");
+        static_assert(std::apply(sum_obj, t) == 143, "");
+    }
+    {
+        using Tup = std::pair<int, long>;
+        using Fn = int(&)(int, int);
+        constexpr Tup t(42, 101);
+        static_assert(std::apply(static_cast<Fn>(constexpr_sum_fn), t) == 143, "");
+        static_assert(std::apply(sum_obj, t) == 143, "");
+    }
+    {
+        using Tup = std::tuple<int, long, int>;
+        using Fn = int(&)(int, int, int);
+        constexpr Tup t(42, 101, -1);
+        static_assert(std::apply(static_cast<Fn>(constexpr_sum_fn), t) == 142, "");
+        static_assert(std::apply(sum_obj, t) == 142, "");
+    }
+    {
+        using Tup = std::array<int, 3>;
+        using Fn = int(&)(int, int, int);
+        constexpr Tup t = {42, 101, -1};
+        static_assert(std::apply(static_cast<Fn>(constexpr_sum_fn), t) == 142, "");
+        static_assert(std::apply(sum_obj, t) == 142, "");
+    }
+}
+
+
+enum CallQuals {
+  CQ_None,
+  CQ_LValue,
+  CQ_ConstLValue,
+  CQ_RValue,
+  CQ_ConstRValue
+};
+
+template <class Tuple>
+struct CallInfo {
+  CallQuals quals;
+  TypeID const* arg_types;
+  Tuple args;
+
+  template <class ...Args>
+  CallInfo(CallQuals q, Args&&... xargs)
+      : quals(q), arg_types(&makeArgumentID<Args&&...>()), args(std::forward<Args>(xargs)...)
+  {}
+};
+
+template <class ...Args>
+inline CallInfo<decltype(std::forward_as_tuple(std::declval<Args>()...))>
+makeCallInfo(CallQuals quals, Args&&... args) {
+    return {quals, std::forward<Args>(args)...};
+}
+
+struct TrackedCallable {
+
+  TrackedCallable() = default;
+
+  template <class ...Args> auto operator()(Args&&... xargs) &
+  { return makeCallInfo(CQ_LValue, std::forward<Args>(xargs)...); }
+
+  template <class ...Args> auto operator()(Args&&... xargs) const&
+  { return makeCallInfo(CQ_ConstLValue, std::forward<Args>(xargs)...); }
+
+  template <class ...Args> auto operator()(Args&&... xargs) &&
+  { return makeCallInfo(CQ_RValue, std::forward<Args>(xargs)...); }
+
+  template <class ...Args> auto operator()(Args&&... xargs) const&&
+  { return makeCallInfo(CQ_ConstRValue, std::forward<Args>(xargs)...); }
+};
+
+template <class ...ExpectArgs, class Tuple>
+void check_apply_quals_and_types(Tuple&& t) {
+    TypeID const* const expect_args = &makeArgumentID<ExpectArgs...>();
+    TrackedCallable obj;
+    TrackedCallable const& cobj = obj;
+    {
+        auto ret = std::apply(obj, std::forward<Tuple>(t));
+        assert(ret.quals == CQ_LValue);
+        assert(ret.arg_types == expect_args);
+        assert(ret.args == t);
+    }
+    {
+        auto ret = std::apply(cobj, std::forward<Tuple>(t));
+        assert(ret.quals == CQ_ConstLValue);
+        assert(ret.arg_types == expect_args);
+        assert(ret.args == t);
+    }
+    {
+        auto ret = std::apply(std::move(obj), std::forward<Tuple>(t));
+        assert(ret.quals == CQ_RValue);
+        assert(ret.arg_types == expect_args);
+        assert(ret.args == t);
+    }
+    {
+        auto ret = std::apply(std::move(cobj), std::forward<Tuple>(t));
+        assert(ret.quals == CQ_ConstRValue);
+        assert(ret.arg_types == expect_args);
+        assert(ret.args == t);
+    }
+}
+
+void test_call_quals_and_arg_types()
+{
+    using Tup = std::tuple<int, int const&, unsigned&&>;
+    const int x = 42;
+    unsigned y = 101;
+    Tup t(-1, x, std::move(y));
+    Tup const& ct = t;
+    check_apply_quals_and_types<int&, int const&, unsigned&>(t);
+    check_apply_quals_and_types<int const&, int const&, unsigned&>(ct);
+    check_apply_quals_and_types<int&&, int const&, unsigned&&>(std::move(t));
+    check_apply_quals_and_types<int const&&, int const&, unsigned&&>(std::move(ct));
+}
+
+
+struct NothrowMoveable {
+  NothrowMoveable() noexcept = default;
+  NothrowMoveable(NothrowMoveable const&) noexcept(false) {}
+  NothrowMoveable(NothrowMoveable&&) noexcept {}
+};
+
+template <bool IsNoexcept>
+struct TestNoexceptCallable {
+  template <class ...Args>
+  NothrowMoveable operator()(Args...) const noexcept(IsNoexcept) { return {}; }
+};
+
+void test_noexcept()
+{
+    TestNoexceptCallable<true> nec;
+    TestNoexceptCallable<false> tc;
+    {
+        // test that the functions noexcept-ness is propagated
+        using Tup = std::tuple<int, const char*, long>;
+        Tup t;
+        LIBCPP_ASSERT_NOEXCEPT(std::apply(nec, t));
+        ASSERT_NOT_NOEXCEPT(std::apply(tc, t));
+    }
+    {
+        // test that the noexcept-ness of the argument conversions is checked.
+        using Tup = std::tuple<NothrowMoveable, int>;
+        Tup t;
+        ASSERT_NOT_NOEXCEPT(std::apply(nec, t));
+        LIBCPP_ASSERT_NOEXCEPT(std::apply(nec, std::move(t)));
+    }
+}
+
+namespace ReturnTypeTest {
+    static int my_int = 42;
+
+    template <int N> struct index {};
+
+    void f(index<0>) {}
+
+    int f(index<1>) { return 0; }
+
+    int & f(index<2>) { return static_cast<int &>(my_int); }
+    int const & f(index<3>) { return static_cast<int const &>(my_int); }
+    int volatile & f(index<4>) { return static_cast<int volatile &>(my_int); }
+    int const volatile & f(index<5>) { return static_cast<int const volatile &>(my_int); }
+
+    int && f(index<6>) { return static_cast<int &&>(my_int); }
+    int const && f(index<7>) { return static_cast<int const &&>(my_int); }
+    int volatile && f(index<8>) { return static_cast<int volatile &&>(my_int); }
+    int const volatile && f(index<9>) { return static_cast<int const volatile &&>(my_int); }
+
+    int * f(index<10>) { return static_cast<int *>(&my_int); }
+    int const * f(index<11>) { return static_cast<int const *>(&my_int); }
+    int volatile * f(index<12>) { return static_cast<int volatile *>(&my_int); }
+    int const volatile * f(index<13>) { return static_cast<int const volatile *>(&my_int); }
+
+    template <int Func, class Expect>
+    void test()
+    {
+        using RawInvokeResult = decltype(f(index<Func>{}));
+        static_assert(std::is_same<RawInvokeResult, Expect>::value, "");
+        using FnType = RawInvokeResult (*) (index<Func>);
+        FnType fn = f;
+        std::tuple<index<Func>> t; ((void)t);
+        using InvokeResult = decltype(std::apply(fn, t));
+        static_assert(std::is_same<InvokeResult, Expect>::value, "");
+    }
+} // end namespace ReturnTypeTest
+
+void test_return_type()
+{
+    using ReturnTypeTest::test;
+    test<0, void>();
+    test<1, int>();
+    test<2, int &>();
+    test<3, int const &>();
+    test<4, int volatile &>();
+    test<5, int const volatile &>();
+    test<6, int &&>();
+    test<7, int const &&>();
+    test<8, int volatile &&>();
+    test<9, int const volatile &&>();
+    test<10, int *>();
+    test<11, int const *>();
+    test<12, int volatile *>();
+    test<13, int const volatile *>();
+}
+
+int main(int, char**) {
+    test_constexpr_evaluation();
+    test_call_quals_and_arg_types();
+    test_return_type();
+    test_noexcept();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply_extended_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply_extended_types.pass.cpp
new file mode 100644
index 0000000..9b19efd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply_extended_types.pass.cpp
@@ -0,0 +1,425 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// template <class F, class T> constexpr decltype(auto) apply(F &&, T &&)
+
+// Testing extended function types. The extended function types are those
+// named by INVOKE but that are not actual callable objects. These include
+// bullets 1-4 of invoke.
+
+#include <tuple>
+#include <array>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int count = 0;
+
+struct A_int_0
+{
+    A_int_0() : obj1(0){}
+    A_int_0(int x) : obj1(x) {}
+    int mem1() { return ++count; }
+    int mem2() const { return ++count; }
+    int const obj1;
+};
+
+struct A_int_1
+{
+    A_int_1() {}
+    A_int_1(int) {}
+    int mem1(int x) { return count += x; }
+    int mem2(int x) const { return count += x; }
+};
+
+struct A_int_2
+{
+    A_int_2() {}
+    A_int_2(int) {}
+    int mem1(int x, int y) { return count += (x + y); }
+    int mem2(int x, int y) const { return count += (x + y); }
+};
+
+template <class A>
+struct A_wrap
+{
+    A_wrap() {}
+    A_wrap(int x) : m_a(x) {}
+    A & operator*() { return m_a; }
+    A const & operator*() const { return m_a; }
+    A m_a;
+};
+
+typedef A_wrap<A_int_0> A_wrap_0;
+typedef A_wrap<A_int_1> A_wrap_1;
+typedef A_wrap<A_int_2> A_wrap_2;
+
+
+template <class A>
+struct A_base : public A
+{
+    A_base() : A() {}
+    A_base(int x) : A(x) {}
+};
+
+typedef A_base<A_int_0> A_base_0;
+typedef A_base<A_int_1> A_base_1;
+typedef A_base<A_int_2> A_base_2;
+
+
+template <
+    class Tuple, class ConstTuple
+  , class TuplePtr, class ConstTuplePtr
+  , class TupleWrap, class ConstTupleWrap
+  , class TupleBase, class ConstTupleBase
+  >
+void test_ext_int_0()
+{
+    count = 0;
+    typedef A_int_0 T;
+    typedef A_wrap_0 Wrap;
+    typedef A_base_0 Base;
+
+    typedef int(T::*mem1_t)();
+    mem1_t mem1 = &T::mem1;
+
+    typedef int(T::*mem2_t)() const;
+    mem2_t mem2 = &T::mem2;
+
+    typedef int const T::*obj1_t;
+    obj1_t obj1 = &T::obj1;
+
+    // member function w/ref
+    {
+        T a;
+        Tuple t{a};
+        assert(1 == std::apply(mem1, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // member function w/pointer
+    {
+        T a;
+        TuplePtr t{&a};
+        assert(1 == std::apply(mem1, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // member function w/base
+    {
+        Base a;
+        TupleBase t{a};
+        assert(1 == std::apply(mem1, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // member function w/wrap
+    {
+        Wrap a;
+        TupleWrap t{a};
+        assert(1 == std::apply(mem1, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // const member function w/ref
+    {
+        T const a;
+        ConstTuple t{a};
+        assert(1 == std::apply(mem2, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // const member function w/pointer
+    {
+        T const a;
+        ConstTuplePtr t{&a};
+        assert(1 == std::apply(mem2, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // const member function w/base
+    {
+        Base const a;
+        ConstTupleBase t{a};
+        assert(1 == std::apply(mem2, t));
+        assert(count == 1);
+    }
+    count = 0;
+    // const member function w/wrapper
+    {
+        Wrap const a;
+        ConstTupleWrap t{a};
+        assert(1 == std::apply(mem2, t));
+        assert(1 == count);
+    }
+    // member object w/ref
+    {
+        T a{42};
+        Tuple t{a};
+        assert(42 == std::apply(obj1, t));
+    }
+    // member object w/pointer
+    {
+        T a{42};
+        TuplePtr t{&a};
+        assert(42 == std::apply(obj1, t));
+    }
+    // member object w/base
+    {
+        Base a{42};
+        TupleBase t{a};
+        assert(42 == std::apply(obj1, t));
+    }
+    // member object w/wrapper
+    {
+        Wrap a{42};
+        TupleWrap t{a};
+        assert(42 == std::apply(obj1, t));
+    }
+}
+
+
+template <
+    class Tuple, class ConstTuple
+  , class TuplePtr, class ConstTuplePtr
+  , class TupleWrap, class ConstTupleWrap
+  , class TupleBase, class ConstTupleBase
+  >
+void test_ext_int_1()
+{
+    count = 0;
+    typedef A_int_1 T;
+    typedef A_wrap_1 Wrap;
+    typedef A_base_1 Base;
+
+    typedef int(T::*mem1_t)(int);
+    mem1_t mem1 = &T::mem1;
+
+    typedef int(T::*mem2_t)(int) const;
+    mem2_t mem2 = &T::mem2;
+
+    // member function w/ref
+    {
+        T a;
+        Tuple t{a, 2};
+        assert(2 == std::apply(mem1, t));
+        assert(count == 2);
+    }
+    count = 0;
+    // member function w/pointer
+    {
+        T a;
+        TuplePtr t{&a, 3};
+        assert(3 == std::apply(mem1, t));
+        assert(count == 3);
+    }
+    count = 0;
+    // member function w/base
+    {
+        Base a;
+        TupleBase t{a, 4};
+        assert(4 == std::apply(mem1, t));
+        assert(count == 4);
+    }
+    count = 0;
+    // member function w/wrap
+    {
+        Wrap a;
+        TupleWrap t{a, 5};
+        assert(5 == std::apply(mem1, t));
+        assert(count == 5);
+    }
+    count = 0;
+    // const member function w/ref
+    {
+        T const a;
+        ConstTuple t{a, 6};
+        assert(6 == std::apply(mem2, t));
+        assert(count == 6);
+    }
+    count = 0;
+    // const member function w/pointer
+    {
+        T const a;
+        ConstTuplePtr t{&a, 7};
+        assert(7 == std::apply(mem2, t));
+        assert(count == 7);
+    }
+    count = 0;
+    // const member function w/base
+    {
+        Base const a;
+        ConstTupleBase t{a, 8};
+        assert(8 == std::apply(mem2, t));
+        assert(count == 8);
+    }
+    count = 0;
+    // const member function w/wrapper
+    {
+        Wrap const a;
+        ConstTupleWrap t{a, 9};
+        assert(9 == std::apply(mem2, t));
+        assert(9 == count);
+    }
+}
+
+
+template <
+    class Tuple, class ConstTuple
+  , class TuplePtr, class ConstTuplePtr
+  , class TupleWrap, class ConstTupleWrap
+  , class TupleBase, class ConstTupleBase
+  >
+void test_ext_int_2()
+{
+    count = 0;
+    typedef A_int_2 T;
+    typedef A_wrap_2 Wrap;
+    typedef A_base_2 Base;
+
+    typedef int(T::*mem1_t)(int, int);
+    mem1_t mem1 = &T::mem1;
+
+    typedef int(T::*mem2_t)(int, int) const;
+    mem2_t mem2 = &T::mem2;
+
+    // member function w/ref
+    {
+        T a;
+        Tuple t{a, 1, 1};
+        assert(2 == std::apply(mem1, t));
+        assert(count == 2);
+    }
+    count = 0;
+    // member function w/pointer
+    {
+        T a;
+        TuplePtr t{&a, 1, 2};
+        assert(3 == std::apply(mem1, t));
+        assert(count == 3);
+    }
+    count = 0;
+    // member function w/base
+    {
+        Base a;
+        TupleBase t{a, 2, 2};
+        assert(4 == std::apply(mem1, t));
+        assert(count == 4);
+    }
+    count = 0;
+    // member function w/wrap
+    {
+        Wrap a;
+        TupleWrap t{a, 2, 3};
+        assert(5 == std::apply(mem1, t));
+        assert(count == 5);
+    }
+    count = 0;
+    // const member function w/ref
+    {
+        T const a;
+        ConstTuple t{a, 3, 3};
+        assert(6 == std::apply(mem2, t));
+        assert(count == 6);
+    }
+    count = 0;
+    // const member function w/pointer
+    {
+        T const a;
+        ConstTuplePtr t{&a, 3, 4};
+        assert(7 == std::apply(mem2, t));
+        assert(count == 7);
+    }
+    count = 0;
+    // const member function w/base
+    {
+        Base const a;
+        ConstTupleBase t{a, 4, 4};
+        assert(8 == std::apply(mem2, t));
+        assert(count == 8);
+    }
+    count = 0;
+    // const member function w/wrapper
+    {
+        Wrap const a;
+        ConstTupleWrap t{a, 4, 5};
+        assert(9 == std::apply(mem2, t));
+        assert(9 == count);
+    }
+}
+
+int main(int, char**)
+{
+    {
+        test_ext_int_0<
+            std::tuple<A_int_0 &>, std::tuple<A_int_0 const &>
+          , std::tuple<A_int_0 *>, std::tuple<A_int_0 const *>
+          , std::tuple<A_wrap_0 &>, std::tuple<A_wrap_0 const &>
+          , std::tuple<A_base_0 &>, std::tuple<A_base_0 const &>
+          >();
+        test_ext_int_0<
+            std::tuple<A_int_0>, std::tuple<A_int_0 const>
+          , std::tuple<A_int_0 *>, std::tuple<A_int_0 const *>
+          , std::tuple<A_wrap_0>, std::tuple<A_wrap_0 const>
+          , std::tuple<A_base_0>, std::tuple<A_base_0 const>
+          >();
+        test_ext_int_0<
+            std::array<A_int_0, 1>, std::array<A_int_0 const, 1>
+          , std::array<A_int_0*, 1>, std::array<A_int_0 const*, 1>
+          , std::array<A_wrap_0, 1>, std::array<A_wrap_0 const, 1>
+          , std::array<A_base_0, 1>, std::array<A_base_0 const, 1>
+          >();
+    }
+    {
+        test_ext_int_1<
+            std::tuple<A_int_1 &, int>, std::tuple<A_int_1 const &, int>
+          , std::tuple<A_int_1 *, int>, std::tuple<A_int_1 const *, int>
+          , std::tuple<A_wrap_1 &, int>, std::tuple<A_wrap_1 const &, int>
+          , std::tuple<A_base_1 &, int>, std::tuple<A_base_1 const &, int>
+          >();
+        test_ext_int_1<
+            std::tuple<A_int_1, int>, std::tuple<A_int_1 const, int>
+          , std::tuple<A_int_1 *, int>, std::tuple<A_int_1 const *, int>
+          , std::tuple<A_wrap_1, int>, std::tuple<A_wrap_1 const, int>
+          , std::tuple<A_base_1, int>, std::tuple<A_base_1 const, int>
+          >();
+        test_ext_int_1<
+            std::pair<A_int_1 &, int>, std::pair<A_int_1 const &, int>
+          , std::pair<A_int_1 *, int>, std::pair<A_int_1 const *, int>
+          , std::pair<A_wrap_1 &, int>, std::pair<A_wrap_1 const &, int>
+          , std::pair<A_base_1 &, int>, std::pair<A_base_1 const &, int>
+          >();
+        test_ext_int_1<
+            std::pair<A_int_1, int>, std::pair<A_int_1 const, int>
+          , std::pair<A_int_1 *, int>, std::pair<A_int_1 const *, int>
+          , std::pair<A_wrap_1, int>, std::pair<A_wrap_1 const, int>
+          , std::pair<A_base_1, int>, std::pair<A_base_1 const, int>
+          >();
+    }
+    {
+        test_ext_int_2<
+            std::tuple<A_int_2 &, int, int>, std::tuple<A_int_2 const &, int, int>
+          , std::tuple<A_int_2 *, int, int>, std::tuple<A_int_2 const *, int, int>
+          , std::tuple<A_wrap_2 &, int, int>, std::tuple<A_wrap_2 const &, int, int>
+          , std::tuple<A_base_2 &, int, int>, std::tuple<A_base_2 const &, int, int>
+          >();
+        test_ext_int_2<
+            std::tuple<A_int_2, int, int>, std::tuple<A_int_2 const, int, int>
+          , std::tuple<A_int_2 *, int, int>, std::tuple<A_int_2 const *, int, int>
+          , std::tuple<A_wrap_2, int, int>, std::tuple<A_wrap_2 const, int, int>
+          , std::tuple<A_base_2, int, int>, std::tuple<A_base_2 const, int, int>
+          >();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply_large_arity.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply_large_arity.pass.cpp
new file mode 100644
index 0000000..7d9f586
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/apply_large_arity.pass.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// template <class F, class T> constexpr decltype(auto) apply(F &&, T &&)
+
+// Stress testing large arities with tuple and array.
+
+#include <tuple>
+#include <array>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+////////////////////////////////////////////////////////////////////////////////
+template <class T, std::size_t Dummy = 0>
+struct always_imp
+{
+    typedef T type;
+};
+
+template <class T, std::size_t Dummy = 0>
+using always_t = typename always_imp<T, Dummy>::type;
+
+////////////////////////////////////////////////////////////////////////////////
+template <class Tuple, class Idx>
+struct make_function;
+
+template <class Tp, std::size_t ...Idx>
+struct make_function<Tp, std::integer_sequence<std::size_t, Idx...>>
+{
+    using type = bool (*)(always_t<Tp, Idx>...);
+};
+
+template <class Tp, std::size_t Size>
+using make_function_t = typename make_function<Tp, std::make_index_sequence<Size>>::type;
+
+////////////////////////////////////////////////////////////////////////////////
+template <class Tp, class Idx>
+struct make_tuple_imp;
+
+////////////////////////////////////////////////////////////////////////////////
+template <class Tp, std::size_t ...Idx>
+struct make_tuple_imp<Tp, std::integer_sequence<std::size_t, Idx...>>
+{
+    using type = std::tuple<always_t<Tp, Idx>...>;
+};
+
+template <class Tp, std::size_t Size>
+using make_tuple_t = typename make_tuple_imp<Tp, std::make_index_sequence<Size>>::type;
+
+template <class ...Types>
+bool test_apply_fn(Types...) { return true; }
+
+
+template <std::size_t Size>
+void test_all()
+{
+
+    using A = std::array<int, Size>;
+    using ConstA = std::array<int const, Size>;
+
+    using Tuple = make_tuple_t<int, Size>;
+    using CTuple = make_tuple_t<const int, Size>;
+
+    using ValFn  = make_function_t<int, Size>;
+    ValFn val_fn = &test_apply_fn;
+
+    using RefFn  = make_function_t<int &, Size>;
+    RefFn ref_fn = &test_apply_fn;
+
+    using CRefFn = make_function_t<int const &, Size>;
+    CRefFn cref_fn = &test_apply_fn;
+
+    using RRefFn = make_function_t<int &&, Size>;
+    RRefFn rref_fn = &test_apply_fn;
+
+    {
+        A a{};
+        assert(std::apply(val_fn, a));
+        assert(std::apply(ref_fn, a));
+        assert(std::apply(cref_fn, a));
+        assert(std::apply(rref_fn, std::move(a)));
+    }
+    {
+        ConstA a{};
+        assert(std::apply(val_fn, a));
+        assert(std::apply(cref_fn, a));
+    }
+    {
+        Tuple a{};
+        assert(std::apply(val_fn, a));
+        assert(std::apply(ref_fn, a));
+        assert(std::apply(cref_fn, a));
+        assert(std::apply(rref_fn, std::move(a)));
+    }
+    {
+        CTuple a{};
+        assert(std::apply(val_fn, a));
+        assert(std::apply(cref_fn, a));
+    }
+
+}
+
+
+template <std::size_t Size>
+void test_one()
+{
+    using A = std::array<int, Size>;
+    using Tuple = make_tuple_t<int, Size>;
+
+    using ValFn  = make_function_t<int, Size>;
+    ValFn val_fn = &test_apply_fn;
+
+    {
+        A a{};
+        assert(std::apply(val_fn, a));
+    }
+    {
+        Tuple a{};
+        assert(std::apply(val_fn, a));
+    }
+}
+
+int main(int, char**)
+{
+    // Instantiate with 1-5 arguments.
+    test_all<1>();
+    test_all<2>();
+    test_all<3>();
+    test_all<4>();
+    test_all<5>();
+
+    // Stress test with 256
+    test_one<256>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/make_from_tuple.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/make_from_tuple.pass.cpp
new file mode 100644
index 0000000..957bb67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/make_from_tuple.pass.cpp
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// template <class T, class Tuple> constexpr T make_from_tuple(Tuple&&);
+
+#include <tuple>
+#include <array>
+#include <utility>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "type_id.h"
+
+template <class Tuple>
+struct ConstexprConstructibleFromTuple {
+  template <class ...Args>
+  explicit constexpr ConstexprConstructibleFromTuple(Args&&... xargs)
+      : args{std::forward<Args>(xargs)...} {}
+  Tuple args;
+};
+
+template <class TupleLike>
+struct ConstructibleFromTuple;
+
+template <template <class ...> class Tuple, class ...Types>
+struct ConstructibleFromTuple<Tuple<Types...>> {
+  template <class ...Args>
+  explicit ConstructibleFromTuple(Args&&... xargs)
+      : args(xargs...),
+        arg_types(&makeArgumentID<Args&&...>())
+  {}
+  Tuple<std::decay_t<Types>...> args;
+  TypeID const* arg_types;
+};
+
+template <class Tp, size_t N>
+struct ConstructibleFromTuple<std::array<Tp, N>> {
+template <class ...Args>
+  explicit ConstructibleFromTuple(Args&&... xargs)
+      : args{xargs...},
+        arg_types(&makeArgumentID<Args&&...>())
+  {}
+  std::array<Tp, N> args;
+  TypeID const* arg_types;
+};
+
+template <class Tuple>
+constexpr bool do_constexpr_test(Tuple&& tup) {
+    using RawTuple = std::decay_t<Tuple>;
+    using Tp = ConstexprConstructibleFromTuple<RawTuple>;
+    return std::make_from_tuple<Tp>(std::forward<Tuple>(tup)).args == tup;
+}
+
+// Needed by do_forwarding_test() since it compares pairs of different types.
+template <class T1, class T2, class U1, class U2>
+inline bool operator==(const std::pair<T1, T2>& lhs, const std::pair<U1, U2>& rhs) {
+    return lhs.first == rhs.first && lhs.second == rhs.second;
+}
+
+template <class ...ExpectTypes, class Tuple>
+bool do_forwarding_test(Tuple&& tup) {
+    using RawTuple = std::decay_t<Tuple>;
+    using Tp = ConstructibleFromTuple<RawTuple>;
+    const Tp value = std::make_from_tuple<Tp>(std::forward<Tuple>(tup));
+    return value.args == tup
+        && value.arg_types == &makeArgumentID<ExpectTypes...>();
+}
+
+void test_constexpr_construction() {
+    {
+        constexpr std::tuple<> tup;
+        static_assert(do_constexpr_test(tup), "");
+    }
+    {
+        constexpr std::tuple<int> tup(42);
+        static_assert(do_constexpr_test(tup), "");
+    }
+    {
+        constexpr std::tuple<int, long, void*> tup(42, 101, nullptr);
+        static_assert(do_constexpr_test(tup), "");
+    }
+    {
+        constexpr std::pair<int, const char*> p(42, "hello world");
+        static_assert(do_constexpr_test(p), "");
+    }
+    {
+        using Tuple = std::array<int, 3>;
+        using ValueTp = ConstexprConstructibleFromTuple<Tuple>;
+        constexpr Tuple arr = {42, 101, -1};
+        constexpr ValueTp value = std::make_from_tuple<ValueTp>(arr);
+        static_assert(value.args[0] == arr[0] && value.args[1] == arr[1]
+            && value.args[2] == arr[2], "");
+    }
+}
+
+void test_perfect_forwarding() {
+    {
+        using Tup = std::tuple<>;
+        Tup tup;
+        Tup const& ctup = tup;
+        assert(do_forwarding_test<>(tup));
+        assert(do_forwarding_test<>(ctup));
+    }
+    {
+        using Tup = std::tuple<int>;
+        Tup tup(42);
+        Tup const& ctup = tup;
+        assert(do_forwarding_test<int&>(tup));
+        assert(do_forwarding_test<int const&>(ctup));
+        assert(do_forwarding_test<int&&>(std::move(tup)));
+        assert(do_forwarding_test<int const&&>(std::move(ctup)));
+    }
+    {
+        using Tup = std::tuple<int&, const char*, unsigned&&>;
+        int x = 42;
+        unsigned y = 101;
+        Tup tup(x, "hello world", std::move(y));
+        Tup const& ctup = tup;
+        assert((do_forwarding_test<int&, const char*&, unsigned&>(tup)));
+        assert((do_forwarding_test<int&, const char* const&, unsigned &>(ctup)));
+        assert((do_forwarding_test<int&, const char*&&, unsigned&&>(std::move(tup))));
+        assert((do_forwarding_test<int&, const char* const&&, unsigned &&>(std::move(ctup))));
+    }
+    // test with pair<T, U>
+    {
+        using Tup = std::pair<int&, const char*>;
+        int x = 42;
+        Tup tup(x, "hello world");
+        Tup const& ctup = tup;
+        assert((do_forwarding_test<int&, const char*&>(tup)));
+        assert((do_forwarding_test<int&, const char* const&>(ctup)));
+        assert((do_forwarding_test<int&, const char*&&>(std::move(tup))));
+        assert((do_forwarding_test<int&, const char* const&&>(std::move(ctup))));
+    }
+    // test with array<T, I>
+    {
+        using Tup = std::array<int, 3>;
+        Tup tup = {42, 101, -1};
+        Tup const& ctup = tup;
+        assert((do_forwarding_test<int&, int&, int&>(tup)));
+        assert((do_forwarding_test<int const&, int const&, int const&>(ctup)));
+        assert((do_forwarding_test<int&&, int&&, int&&>(std::move(tup))));
+        assert((do_forwarding_test<int const&&, int const&&, int const&&>(std::move(ctup))));
+    }
+}
+
+void test_noexcept() {
+    struct NothrowMoveable {
+      NothrowMoveable() = default;
+      NothrowMoveable(NothrowMoveable const&) {}
+      NothrowMoveable(NothrowMoveable&&) noexcept {}
+    };
+    struct TestType {
+      TestType(int, NothrowMoveable) noexcept {}
+      TestType(int, int, int) noexcept(false) {}
+      TestType(long, long, long) noexcept {}
+    };
+    {
+        using Tuple = std::tuple<int, NothrowMoveable>;
+        Tuple tup; ((void)tup);
+        Tuple const& ctup = tup; ((void)ctup);
+        ASSERT_NOT_NOEXCEPT(std::make_from_tuple<TestType>(ctup));
+        LIBCPP_ASSERT_NOEXCEPT(std::make_from_tuple<TestType>(std::move(tup)));
+    }
+    {
+        using Tuple = std::pair<int, NothrowMoveable>;
+        Tuple tup; ((void)tup);
+        Tuple const& ctup = tup; ((void)ctup);
+        ASSERT_NOT_NOEXCEPT(std::make_from_tuple<TestType>(ctup));
+        LIBCPP_ASSERT_NOEXCEPT(std::make_from_tuple<TestType>(std::move(tup)));
+    }
+    {
+        using Tuple = std::tuple<int, int, int>;
+        Tuple tup; ((void)tup);
+        ASSERT_NOT_NOEXCEPT(std::make_from_tuple<TestType>(tup));
+    }
+    {
+        using Tuple = std::tuple<long, long, long>;
+        Tuple tup; ((void)tup);
+        LIBCPP_ASSERT_NOEXCEPT(std::make_from_tuple<TestType>(tup));
+    }
+    {
+        using Tuple = std::array<int, 3>;
+        Tuple tup; ((void)tup);
+        ASSERT_NOT_NOEXCEPT(std::make_from_tuple<TestType>(tup));
+    }
+    {
+        using Tuple = std::array<long, 3>;
+        Tuple tup; ((void)tup);
+        LIBCPP_ASSERT_NOEXCEPT(std::make_from_tuple<TestType>(tup));
+    }
+}
+
+int main(int, char**)
+{
+    test_constexpr_construction();
+    test_perfect_forwarding();
+    test_noexcept();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_convert_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_convert_copy.pass.cpp
new file mode 100644
index 0000000..2bc1f4b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_convert_copy.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... UTypes>
+// constexpr const tuple& operator=(const tuple<UTypes...>& u) const;
+//
+// Constraints:
+// - sizeof...(Types) equals sizeof...(UTypes) and
+// - (is_assignable_v<const Types&, const UTypes&> && ...) is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// test constraints
+
+// sizeof...(Types) equals sizeof...(UTypes)
+static_assert(std::is_assignable_v<const std::tuple<int&>&, const std::tuple<long&>&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&, int&>&, const std::tuple<long&>&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&>&, const std::tuple<long&, long&>&>);
+
+// (is_assignable_v<const Types&, const UTypes&> && ...) is true
+static_assert(std::is_assignable_v<const std::tuple<AssignableFrom<ConstCopyAssign>>&,
+                                   const std::tuple<ConstCopyAssign>&>);
+
+static_assert(std::is_assignable_v<const std::tuple<AssignableFrom<ConstCopyAssign>, ConstCopyAssign>&,
+                                   const std::tuple<ConstCopyAssign, ConstCopyAssign>&>);
+
+static_assert(!std::is_assignable_v<const std::tuple<AssignableFrom<ConstCopyAssign>, CopyAssign>&,
+                                    const std::tuple<ConstCopyAssign, CopyAssign>&>);
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1 = 1;
+    int i2 = 2;
+    long j1 = 3;
+    long j2 = 4;
+    const std::tuple<int&, int&> t1{i1, i2};
+    const std::tuple<long&, long&> t2{j1, j2};
+    t2 = t1;
+    assert(std::get<0>(t2) == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // user defined const copy assignment
+  {
+    const std::tuple<ConstCopyAssign> t1{1};
+    const std::tuple<AssignableFrom<ConstCopyAssign>> t2{2};
+    t2 = t1;
+    assert(std::get<0>(t2).v.val == 1);
+  }
+
+  // make sure the right assignment operator of the type in the tuple is used
+  {
+    std::tuple<TracedAssignment> t1{};
+    const std::tuple<AssignableFrom<TracedAssignment>> t2{};
+    t2 = t1;
+    assert(std::get<0>(t2).v.constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_convert_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_convert_move.pass.cpp
new file mode 100644
index 0000000..367da31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_convert_move.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... UTypes>
+// constexpr const tuple& operator=(tuple<UTypes...>&& u) const;
+//
+// Constraints:
+// - sizeof...(Types) equals sizeof...(UTypes) and
+// - (is_assignable_v<const Types&, UTypes> && ...) is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// test constraints
+
+// sizeof...(Types) equals sizeof...(UTypes)
+static_assert(std::is_assignable_v<const std::tuple<int&>&, std::tuple<long&>&&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&, int&>&, std::tuple<long&>&&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&>&, std::tuple<long&, long&>&&>);
+
+// (is_assignable_v<const Types&, UTypes&&> && ...) is true
+static_assert(std::is_assignable_v<const std::tuple<AssignableFrom<ConstMoveAssign>>&, std::tuple<ConstMoveAssign>&&>);
+
+static_assert(std::is_assignable_v<const std::tuple<AssignableFrom<ConstMoveAssign>, ConstMoveAssign>&,
+                                   std::tuple<ConstMoveAssign, ConstMoveAssign>&&>);
+
+static_assert(!std::is_assignable_v<const std::tuple<AssignableFrom<ConstMoveAssign>, AssignableFrom<MoveAssign>>&,
+                                    std::tuple<ConstMoveAssign, MoveAssign>&&>);
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1 = 1;
+    int i2 = 2;
+    long j1 = 3;
+    long j2 = 4;
+    std::tuple<int&, int&> t1{i1, i2};
+    const std::tuple<long&, long&> t2{j1, j2};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2) == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // user defined const copy assignment
+  {
+    std::tuple<ConstMoveAssign> t1{1};
+    const std::tuple<AssignableFrom<ConstMoveAssign>> t2{2};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2).v.val == 1);
+  }
+
+  // make sure the right assignment operator of the type in the tuple is used
+  {
+    std::tuple<TracedAssignment> t1{};
+    const std::tuple<AssignableFrom<TracedAssignment>> t2{};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2).v.constMoveAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_copy.pass.cpp
new file mode 100644
index 0000000..b541d78
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_copy.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// constexpr const tuple& operator=(const tuple&) const;
+//
+// Constraints: (is_copy_assignable_v<const Types> && ...) is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// test constraints
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+static_assert(!std::is_assignable_v<const std::tuple<int>&, const std::tuple<int>&>);
+static_assert(std::is_assignable_v<const std::tuple<int&>&, const std::tuple<int&>&>);
+static_assert(std::is_assignable_v<const std::tuple<int&, int&>&, const std::tuple<int&, int&>&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&, int>&, const std::tuple<int&, int>&>);
+static_assert(std::is_assignable_v<const std::tuple<ConstCopyAssign>&, const std::tuple<ConstCopyAssign>&>);
+static_assert(!std::is_assignable_v<const std::tuple<CopyAssign>&, const std::tuple<CopyAssign>&>);
+static_assert(!std::is_assignable_v<const std::tuple<ConstMoveAssign>&, const std::tuple<ConstMoveAssign>&>);
+static_assert(!std::is_assignable_v<const std::tuple<MoveAssign>&, const std::tuple<MoveAssign>&>);
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1 = 1;
+    int i2 = 2;
+    double d1 = 3.0;
+    double d2 = 5.0;
+    const std::tuple<int&, double&> t1{i1, d1};
+    const std::tuple<int&, double&> t2{i2, d2};
+    t2 = t1;
+    assert(std::get<0>(t2) == 1);
+    assert(std::get<1>(t2) == 3.0);
+  }
+
+  // user defined const copy assignment
+  {
+    const std::tuple<ConstCopyAssign> t1{1};
+    const std::tuple<ConstCopyAssign> t2{2};
+    t2 = t1;
+    assert(std::get<0>(t2).val == 1);
+  }
+
+  // make sure the right assignment operator of the type in the tuple is used
+  {
+    std::tuple<TracedAssignment, const TracedAssignment> t1{};
+    const std::tuple<TracedAssignment, const TracedAssignment> t2{};
+    t2 = t1;
+    assert(std::get<0>(t2).constCopyAssign == 1);
+    assert(std::get<1>(t2).constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_move.pass.cpp
new file mode 100644
index 0000000..5ee72ae
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_move.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// constexpr const tuple& operator=(tuple&&) const;
+//
+// Constraints: (is_assignable_v<const Types&, Types> && ...) is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// test constraints
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+static_assert(!std::is_assignable_v<const std::tuple<int>&, std::tuple<int>&&>);
+static_assert(std::is_assignable_v<const std::tuple<int&>&, std::tuple<int&>&&>);
+static_assert(std::is_assignable_v<const std::tuple<int&, int&>&, std::tuple<int&, int&>&&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&, int>&, std::tuple<int&, int>&&>);
+
+// this is fallback to tuple's const copy assignment
+static_assert(std::is_assignable_v<const std::tuple<ConstCopyAssign>&, std::tuple<ConstCopyAssign>&&>);
+
+static_assert(!std::is_assignable_v<const std::tuple<CopyAssign>&, std::tuple<CopyAssign>&&>);
+static_assert(std::is_assignable_v<const std::tuple<ConstMoveAssign>&, std::tuple<ConstMoveAssign>&&>);
+static_assert(!std::is_assignable_v<const std::tuple<MoveAssign>&, std::tuple<MoveAssign>&&>);
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1 = 1;
+    int i2 = 2;
+    double d1 = 3.0;
+    double d2 = 5.0;
+    std::tuple<int&, double&> t1{i1, d1};
+    const std::tuple<int&, double&> t2{i2, d2};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2) == 1);
+    assert(std::get<1>(t2) == 3.0);
+  }
+
+  // user defined const move assignment
+  {
+    std::tuple<ConstMoveAssign> t1{1};
+    const std::tuple<ConstMoveAssign> t2{2};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2).val == 1);
+  }
+
+  // make sure the right assignment operator of the type in the tuple is used
+  {
+    std::tuple<TracedAssignment, const TracedAssignment> t1{};
+    const std::tuple<TracedAssignment, const TracedAssignment> t2{};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2).constMoveAssign == 1);
+    assert(std::get<1>(t2).constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair.pass.cpp
new file mode 100644
index 0000000..2fc54fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class U1, class U2>
+//   tuple& operator=(const pair<U1, U2>& u);
+
+// UNSUPPORTED: c++03
+
+#include <cassert>
+#include <memory>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+struct NothrowCopyAssignable {
+    NothrowCopyAssignable(NothrowCopyAssignable const&) = delete;
+    NothrowCopyAssignable& operator=(NothrowCopyAssignable const&) noexcept { return *this; }
+};
+struct PotentiallyThrowingCopyAssignable {
+    PotentiallyThrowingCopyAssignable(PotentiallyThrowingCopyAssignable const&) = delete;
+    PotentiallyThrowingCopyAssignable& operator=(PotentiallyThrowingCopyAssignable const&) { return *this; }
+};
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    {
+        typedef std::pair<long, char> T0;
+        typedef std::tuple<long long, short> T1;
+        T0 t0(2, 'a');
+        T1 t1;
+        t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == short('a'));
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+    {
+        // test that the implicitly generated copy assignment operator
+        // is properly deleted
+        using T = std::tuple<int, int>;
+        using P = std::tuple<std::unique_ptr<int>, std::unique_ptr<int>>;
+        static_assert(!std::is_assignable<T&, const P &>::value, "");
+    }
+    {
+        typedef std::tuple<NothrowCopyAssignable, long> Tuple;
+        typedef std::pair<NothrowCopyAssignable, int> Pair;
+        static_assert(std::is_nothrow_assignable<Tuple&, Pair const&>::value, "");
+        static_assert(std::is_nothrow_assignable<Tuple&, Pair&>::value, "");
+        static_assert(std::is_nothrow_assignable<Tuple&, Pair const&&>::value, "");
+    }
+    {
+        typedef std::tuple<PotentiallyThrowingCopyAssignable, long> Tuple;
+        typedef std::pair<PotentiallyThrowingCopyAssignable, int> Pair;
+        static_assert(std::is_assignable<Tuple&, Pair const&>::value, "");
+        static_assert(!std::is_nothrow_assignable<Tuple&, Pair const&>::value, "");
+
+        static_assert(std::is_assignable<Tuple&, Pair&>::value, "");
+        static_assert(!std::is_nothrow_assignable<Tuple&, Pair&>::value, "");
+
+        static_assert(std::is_assignable<Tuple&, Pair const&&>::value, "");
+        static_assert(!std::is_nothrow_assignable<Tuple&, Pair const&&>::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair_copy.pass.cpp
new file mode 100644
index 0000000..a384e49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair_copy.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template<class U1, class U2>
+// constexpr const tuple& operator=(const pair<U1, U2>& u) const;
+//
+// - sizeof...(Types) is 2,
+// - is_assignable_v<const T1&, const U1&> is true, and
+// - is_assignable_v<const T2&, const U2&> is true
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// test constraints
+
+// sizeof...(Types) != 2,
+static_assert(std::is_assignable_v<const std::tuple<int&, int&>&, const std::pair<int&, int&>&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&>&, const std::pair<int&, int&>&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&, int&, int&>&, const std::pair<int&, int&>&>);
+
+static_assert(std::is_assignable_v<const std::tuple<AssignableFrom<ConstCopyAssign>, ConstCopyAssign>&,
+                                   const std::pair<ConstCopyAssign, ConstCopyAssign>&>);
+
+// is_assignable_v<const T1&, const U1&> is false
+static_assert(!std::is_assignable_v<const std::tuple<AssignableFrom<CopyAssign>, ConstCopyAssign>&,
+                                    const std::pair<CopyAssign, ConstCopyAssign>&>);
+
+// is_assignable_v<const T2&, const U2&> is false
+static_assert(!std::is_assignable_v<const std::tuple<AssignableFrom<ConstCopyAssign>, AssignableFrom<CopyAssign>>&,
+                                    const std::tuple<ConstCopyAssign, CopyAssign>&>);
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1 = 1;
+    int i2 = 2;
+    long j1 = 3;
+    long j2 = 4;
+    const std::pair<int&, int&> t1{i1, i2};
+    const std::tuple<long&, long&> t2{j1, j2};
+    t2 = t1;
+    assert(std::get<0>(t2) == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // user defined const copy assignment
+  {
+    const std::pair<ConstCopyAssign, ConstCopyAssign> t1{1, 2};
+    const std::tuple<AssignableFrom<ConstCopyAssign>, ConstCopyAssign> t2{3, 4};
+    t2 = t1;
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2).val == 2);
+  }
+
+  // make sure the right assignment operator of the type in the tuple is used
+  {
+    std::pair<TracedAssignment, TracedAssignment> t1{};
+    const std::tuple<AssignableFrom<TracedAssignment>, AssignableFrom<TracedAssignment>> t2{};
+    t2 = t1;
+    assert(std::get<0>(t2).v.constCopyAssign == 1);
+    assert(std::get<1>(t2).v.constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair_move.pass.cpp
new file mode 100644
index 0000000..29dc14f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/const_pair_move.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template<class U1, class U2>
+// constexpr const tuple& operator=(pair<U1, U2>&& u) const;
+//
+// - sizeof...(Types) is 2,
+// - is_assignable_v<const T1&, U1> is true, and
+// - is_assignable_v<const T2&, U2> is true
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// test constraints
+
+// sizeof...(Types) != 2,
+static_assert(std::is_assignable_v<const std::tuple<int&, int&>&, std::pair<int&, int&>&&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&>&, std::pair<int&, int&>&&>);
+static_assert(!std::is_assignable_v<const std::tuple<int&, int&, int&>&, std::pair<int&, int&>&&>);
+
+static_assert(std::is_assignable_v<const std::tuple<AssignableFrom<ConstMoveAssign>, ConstMoveAssign>&,
+                                   std::pair<ConstMoveAssign, ConstMoveAssign>&&>);
+
+// is_assignable_v<const T1&, U1> is false
+static_assert(!std::is_assignable_v<const std::tuple<AssignableFrom<MoveAssign>, ConstMoveAssign>&,
+                                    std::pair<MoveAssign, ConstMoveAssign>&&>);
+
+// is_assignable_v<const T2&, U2> is false
+static_assert(!std::is_assignable_v<const std::tuple<AssignableFrom<ConstMoveAssign>, AssignableFrom<MoveAssign>>&,
+                                    std::tuple<ConstMoveAssign, MoveAssign>&&>);
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1 = 1;
+    int i2 = 2;
+    long j1 = 3;
+    long j2 = 4;
+    std::pair<int&, int&> t1{i1, i2};
+    const std::tuple<long&, long&> t2{j1, j2};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2) == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // user defined const copy assignment
+  {
+    std::pair<ConstMoveAssign, ConstMoveAssign> t1{1, 2};
+    const std::tuple<AssignableFrom<ConstMoveAssign>, ConstMoveAssign> t2{3, 4};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2).val == 2);
+  }
+
+  // make sure the right assignment operator of the type in the tuple is used
+  {
+    std::pair<TracedAssignment, TracedAssignment> t1{};
+    const std::tuple<AssignableFrom<TracedAssignment>, AssignableFrom<TracedAssignment>> t2{};
+    t2 = std::move(t1);
+    assert(std::get<0>(t2).v.constMoveAssign == 1);
+    assert(std::get<1>(t2).v.constMoveAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp
new file mode 100644
index 0000000..db03f24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_copy.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Triggers a Clang assertion: llvm.org/PR45879
+// UNSUPPORTED: clang-14, clang-15
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes>
+//   tuple& operator=(const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B {
+    int id_;
+
+    constexpr explicit B(int i = 0) : id_(i) {}
+};
+
+struct D : B {
+    constexpr explicit D(int i = 0) : B(i) {}
+};
+
+struct NonAssignable {
+    NonAssignable& operator=(NonAssignable const&) = delete;
+    NonAssignable& operator=(NonAssignable&&) = delete;
+};
+
+struct NothrowCopyAssignable {
+    NothrowCopyAssignable(NothrowCopyAssignable const&) = delete;
+    NothrowCopyAssignable& operator=(NothrowCopyAssignable const&) noexcept { return *this; }
+};
+
+struct PotentiallyThrowingCopyAssignable {
+    PotentiallyThrowingCopyAssignable(PotentiallyThrowingCopyAssignable const&) = delete;
+    PotentiallyThrowingCopyAssignable& operator=(PotentiallyThrowingCopyAssignable const&) { return *this; }
+};
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    {
+        typedef std::tuple<long> T0;
+        typedef std::tuple<long long> T1;
+        T0 t0(2);
+        T1 t1;
+        t1 = t0;
+        assert(std::get<0>(t1) == 2);
+    }
+    {
+        typedef std::tuple<long, char> T0;
+        typedef std::tuple<long long, int> T1;
+        T0 t0(2, 'a');
+        T1 t1;
+        t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+    }
+    {
+        typedef std::tuple<long, char, D> T0;
+        typedef std::tuple<long long, int, B> T1;
+        T0 t0(2, 'a', D(3));
+        T1 t1;
+        t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 3);
+    }
+    {
+        D d(3);
+        D d2(2);
+        typedef std::tuple<long, char, D&> T0;
+        typedef std::tuple<long long, int, B&> T1;
+        T0 t0(2, 'a', d2);
+        T1 t1(1, 'b', d);
+        t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 2);
+    }
+    {
+        // Test that tuple evaluates correctly applies an lvalue reference
+        // before evaluating is_assignable (i.e. 'is_assignable<int&, int&>')
+        // instead of evaluating 'is_assignable<int&&, int&>' which is false.
+        int x = 42;
+        int y = 43;
+        std::tuple<int&&> t(std::move(x));
+        std::tuple<int&> t2(y);
+        t = t2;
+        assert(std::get<0>(t) == 43);
+        assert(&std::get<0>(t) == &x);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+    {
+        using T = std::tuple<int, NonAssignable>;
+        using U = std::tuple<NonAssignable, int>;
+        static_assert(!std::is_assignable<T&, U const&>::value, "");
+        static_assert(!std::is_assignable<U&, T const&>::value, "");
+    }
+    {
+        typedef std::tuple<NothrowCopyAssignable, long> T0;
+        typedef std::tuple<NothrowCopyAssignable, int> T1;
+        static_assert(std::is_nothrow_assignable<T0&, T1 const&>::value, "");
+    }
+    {
+        typedef std::tuple<PotentiallyThrowingCopyAssignable, long> T0;
+        typedef std::tuple<PotentiallyThrowingCopyAssignable, int> T1;
+        static_assert(std::is_assignable<T0&, T1 const&>::value, "");
+        static_assert(!std::is_nothrow_assignable<T0&, T1 const&>::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_move.pass.cpp
new file mode 100644
index 0000000..d1c3cfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_move.pass.cpp
@@ -0,0 +1,261 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes>
+//   tuple& operator=(tuple<UTypes...>&& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <memory>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B {
+    int id_;
+    explicit B(int i = 0) : id_(i) {}
+    virtual ~B() {}
+};
+
+struct D : B {
+    explicit D(int i) : B(i) {}
+};
+
+struct E {
+  constexpr E() = default;
+  TEST_CONSTEXPR_CXX14 E& operator=(int) {
+      return *this;
+  }
+};
+
+struct NothrowMoveAssignable {
+    NothrowMoveAssignable& operator=(NothrowMoveAssignable&&) noexcept { return *this; }
+};
+
+struct PotentiallyThrowingMoveAssignable {
+    PotentiallyThrowingMoveAssignable& operator=(PotentiallyThrowingMoveAssignable&&) { return *this; }
+};
+
+struct NonAssignable {
+  NonAssignable& operator=(NonAssignable const&) = delete;
+  NonAssignable& operator=(NonAssignable&&) = delete;
+};
+
+struct MoveAssignable {
+  MoveAssignable& operator=(MoveAssignable const&) = delete;
+  MoveAssignable& operator=(MoveAssignable&&) = default;
+};
+
+struct CopyAssignable {
+  CopyAssignable& operator=(CopyAssignable const&) = default;
+  CopyAssignable& operator=(CopyAssignable&&) = delete;
+};
+
+struct TrackMove
+{
+    TrackMove() : value(0), moved_from(false) { }
+    explicit TrackMove(int v) : value(v), moved_from(false) { }
+    TrackMove(TrackMove const& other) : value(other.value), moved_from(false) { }
+    TrackMove(TrackMove&& other) : value(other.value), moved_from(false) {
+        other.moved_from = true;
+    }
+    TrackMove& operator=(TrackMove const& other) {
+        value = other.value;
+        moved_from = false;
+        return *this;
+    }
+    TrackMove& operator=(TrackMove&& other) {
+        value = other.value;
+        moved_from = false;
+        other.moved_from = true;
+        return *this;
+    }
+
+    int value;
+    bool moved_from;
+};
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    {
+        typedef std::tuple<long> T0;
+        typedef std::tuple<long long> T1;
+        T0 t0(2);
+        T1 t1;
+        t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+    }
+    {
+        typedef std::tuple<long, char> T0;
+        typedef std::tuple<long long, int> T1;
+        T0 t0(2, 'a');
+        T1 t1;
+        t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+    }
+    {
+        // Test that tuple evaluates correctly applies an lvalue reference
+        // before evaluating is_assignable (i.e. 'is_assignable<int&, int&&>')
+        // instead of evaluating 'is_assignable<int&&, int&&>' which is false.
+        int x = 42;
+        int y = 43;
+        std::tuple<int&&, E> t(std::move(x), E{});
+        std::tuple<int&&, int> t2(std::move(y), 44);
+        t = std::move(t2);
+        assert(std::get<0>(t) == 43);
+        assert(&std::get<0>(t) == &x);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+    {
+        typedef std::tuple<long, char, D> T0;
+        typedef std::tuple<long long, int, B> T1;
+        T0 t0(2, 'a', D(3));
+        T1 t1;
+        t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 3);
+    }
+    {
+        D d(3);
+        D d2(2);
+        typedef std::tuple<long, char, D&> T0;
+        typedef std::tuple<long long, int, B&> T1;
+        T0 t0(2, 'a', d2);
+        T1 t1(1, 'b', d);
+        t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 2);
+    }
+    {
+        typedef std::tuple<long, char, std::unique_ptr<D>> T0;
+        typedef std::tuple<long long, int, std::unique_ptr<B>> T1;
+        T0 t0(2, 'a', std::unique_ptr<D>(new D(3)));
+        T1 t1;
+        t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1)->id_ == 3);
+    }
+
+    {
+        using T = std::tuple<int, NonAssignable>;
+        using U = std::tuple<NonAssignable, int>;
+        static_assert(!std::is_assignable<T&, U&&>::value, "");
+        static_assert(!std::is_assignable<U&, T&&>::value, "");
+    }
+    {
+        typedef std::tuple<NothrowMoveAssignable, long> T0;
+        typedef std::tuple<NothrowMoveAssignable, int> T1;
+        static_assert(std::is_nothrow_assignable<T0&, T1&&>::value, "");
+    }
+    {
+        typedef std::tuple<PotentiallyThrowingMoveAssignable, long> T0;
+        typedef std::tuple<PotentiallyThrowingMoveAssignable, int> T1;
+        static_assert(std::is_assignable<T0&, T1&&>::value, "");
+        static_assert(!std::is_nothrow_assignable<T0&, T1&&>::value, "");
+    }
+    {
+        // We assign through the reference and don't move out of the incoming ref,
+        // so this doesn't work (but would if the type were CopyAssignable).
+        {
+            using T1 = std::tuple<MoveAssignable&, long>;
+            using T2 = std::tuple<MoveAssignable&, int>;
+            static_assert(!std::is_assignable<T1&, T2&&>::value, "");
+        }
+
+        // ... works if it's CopyAssignable
+        {
+            using T1 = std::tuple<CopyAssignable&, long>;
+            using T2 = std::tuple<CopyAssignable&, int>;
+            static_assert(std::is_assignable<T1&, T2&&>::value, "");
+        }
+
+        // For rvalue-references, we can move-assign if the type is MoveAssignable
+        // or CopyAssignable (since in the worst case the move will decay into a copy).
+        {
+            using T1 = std::tuple<MoveAssignable&&, long>;
+            using T2 = std::tuple<MoveAssignable&&, int>;
+            static_assert(std::is_assignable<T1&, T2&&>::value, "");
+
+            using T3 = std::tuple<CopyAssignable&&, long>;
+            using T4 = std::tuple<CopyAssignable&&, int>;
+            static_assert(std::is_assignable<T3&, T4&&>::value, "");
+        }
+
+        // In all cases, we can't move-assign if the types are not assignable,
+        // since we assign through the reference.
+        {
+            using T1 = std::tuple<NonAssignable&, long>;
+            using T2 = std::tuple<NonAssignable&, int>;
+            static_assert(!std::is_assignable<T1&, T2&&>::value, "");
+
+            using T3 = std::tuple<NonAssignable&&, long>;
+            using T4 = std::tuple<NonAssignable&&, int>;
+            static_assert(!std::is_assignable<T3&, T4&&>::value, "");
+        }
+    }
+    {
+        // Make sure that we don't incorrectly move out of the source's reference.
+        using Dest = std::tuple<TrackMove, long>;
+        using Source = std::tuple<TrackMove&, int>;
+        TrackMove track{3};
+        Source src(track, 4);
+        assert(!track.moved_from);
+
+        Dest dst;
+        dst = std::move(src); // here we should make a copy
+        assert(!track.moved_from);
+        assert(std::get<0>(dst).value == 3);
+    }
+    {
+        // But we do move out of the source's reference if it's a rvalue ref
+        using Dest = std::tuple<TrackMove, long>;
+        using Source = std::tuple<TrackMove&&, int>;
+        TrackMove track{3};
+        Source src(std::move(track), 4);
+        assert(!track.moved_from); // we just took a reference
+
+        Dest dst;
+        dst = std::move(src);
+        assert(track.moved_from);
+        assert(std::get<0>(dst).value == 3);
+    }
+    {
+        // If the source holds a value, then we move out of it too
+        using Dest = std::tuple<TrackMove, long>;
+        using Source = std::tuple<TrackMove, int>;
+        Source src(TrackMove{3}, 4);
+        Dest dst;
+        dst = std::move(src);
+        assert(std::get<0>(src).moved_from);
+        assert(std::get<0>(dst).value == 3);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/copy.compile.fail.cpp
new file mode 100644
index 0000000..b3f068d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/copy.compile.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// tuple& operator=(const tuple& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(2));
+        T t;
+        t = t0;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/copy.pass.cpp
new file mode 100644
index 0000000..71a878a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/copy.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// tuple& operator=(const tuple& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <memory>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonAssignable {
+  NonAssignable& operator=(NonAssignable const&) = delete;
+  NonAssignable& operator=(NonAssignable&&) = delete;
+};
+struct CopyAssignable {
+  CopyAssignable& operator=(CopyAssignable const&) = default;
+  CopyAssignable& operator=(CopyAssignable &&) = delete;
+};
+static_assert(std::is_copy_assignable<CopyAssignable>::value, "");
+struct MoveAssignable {
+  MoveAssignable& operator=(MoveAssignable const&) = delete;
+  MoveAssignable& operator=(MoveAssignable&&) = default;
+};
+struct NothrowCopyAssignable {
+  NothrowCopyAssignable& operator=(NothrowCopyAssignable const&) noexcept { return *this; }
+};
+struct PotentiallyThrowingCopyAssignable {
+  PotentiallyThrowingCopyAssignable& operator=(PotentiallyThrowingCopyAssignable const&) { return *this; }
+};
+
+struct CopyAssignableInt {
+  CopyAssignableInt& operator=(int&) { return *this; }
+};
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t;
+        t = t0;
+    }
+    {
+        typedef std::tuple<int> T;
+        T t0(2);
+        T t;
+        t = t0;
+        assert(std::get<0>(t) == 2);
+    }
+    {
+        typedef std::tuple<int, char> T;
+        T t0(2, 'a');
+        T t;
+        t = t0;
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == 'a');
+    }
+    {
+        // test reference assignment.
+        using T = std::tuple<int&, int&&>;
+        int x = 42;
+        int y = 100;
+        int x2 = -1;
+        int y2 = 500;
+        T t(x, std::move(y));
+        T t2(x2, std::move(y2));
+        t = t2;
+        assert(std::get<0>(t) == x2);
+        assert(&std::get<0>(t) == &x);
+        assert(std::get<1>(t) == y2);
+        assert(&std::get<1>(t) == &y);
+    }
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+    {
+        // cannot be constexpr because of std::string
+        typedef std::tuple<int, char, std::string> T;
+        const T t0(2, 'a', "some text");
+        T t;
+        t = t0;
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == 'a');
+        assert(std::get<2>(t) == "some text");
+    }
+    {
+        // test that the implicitly generated copy assignment operator
+        // is properly deleted
+        using T = std::tuple<std::unique_ptr<int>>;
+        static_assert(!std::is_copy_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, NonAssignable>;
+        static_assert(!std::is_copy_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, CopyAssignable>;
+        static_assert(std::is_copy_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, MoveAssignable>;
+        static_assert(!std::is_copy_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, int, int>;
+        using P = std::pair<int, int>;
+        static_assert(!std::is_assignable<T&, P>::value, "");
+    }
+    {
+        // test const requirement
+        using T = std::tuple<CopyAssignableInt, CopyAssignableInt>;
+        using P = std::pair<int, int>;
+        static_assert(!std::is_assignable<T&, P const>::value, "");
+    }
+    {
+        using T = std::tuple<int, MoveAssignable>;
+        using P = std::pair<int, MoveAssignable>;
+        static_assert(!std::is_assignable<T&, P&>::value, "");
+    }
+    {
+        using T = std::tuple<NothrowCopyAssignable, int>;
+        static_assert(std::is_nothrow_copy_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<PotentiallyThrowingCopyAssignable, int>;
+        static_assert(std::is_copy_assignable<T>::value, "");
+        static_assert(!std::is_nothrow_copy_assignable<T>::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/derived_from_tuple_like.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/derived_from_tuple_like.pass.cpp
new file mode 100644
index 0000000..373b30a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/derived_from_tuple_like.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes>
+//   tuple& operator=(const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <array>
+#include <string>
+#include <utility>
+#include <cassert>
+
+#include "propagate_value_category.hpp"
+
+struct TracksIntQuals {
+  TracksIntQuals() : value(-1), value_category(VC_None), assigned(false) {}
+
+  template <class Tp,
+            class = typename std::enable_if<!std::is_same<
+                typename std::decay<Tp>::type, TracksIntQuals>::value>::type>
+  TracksIntQuals(Tp &&x)
+      : value(x), value_category(getValueCategory<Tp &&>()), assigned(false) {
+    static_assert(std::is_same<UnCVRef<Tp>, int>::value, "");
+  }
+
+  template <class Tp,
+            class = typename std::enable_if<!std::is_same<
+                typename std::decay<Tp>::type, TracksIntQuals>::value>::type>
+  TracksIntQuals &operator=(Tp &&x) {
+    static_assert(std::is_same<UnCVRef<Tp>, int>::value, "");
+    value = x;
+    value_category = getValueCategory<Tp &&>();
+    assigned = true;
+    return *this;
+  }
+
+  void reset() {
+    value = -1;
+    value_category = VC_None;
+    assigned = false;
+  }
+
+  bool checkConstruct(int expect, ValueCategory expect_vc) const {
+    return value != 1 && value == expect && value_category == expect_vc &&
+           assigned == false;
+  }
+
+  bool checkAssign(int expect, ValueCategory expect_vc) const {
+    return value != 1 && value == expect && value_category == expect_vc &&
+           assigned == true;
+  }
+
+  int value;
+  ValueCategory value_category;
+  bool assigned;
+};
+
+template <class Tup>
+struct DerivedFromTup : Tup {
+  using Tup::Tup;
+};
+
+template <ValueCategory VC>
+void do_derived_assign_test() {
+  using Tup1 = std::tuple<long, TracksIntQuals>;
+  Tup1 t;
+  auto reset = [&]() {
+    std::get<0>(t) = -1;
+    std::get<1>(t).reset();
+  };
+  {
+    DerivedFromTup<std::tuple<int, int>> d;
+    std::get<0>(d) = 42;
+    std::get<1>(d) = 101;
+
+    t = ValueCategoryCast<VC>(d);
+    assert(std::get<0>(t) == 42);
+    assert(std::get<1>(t).checkAssign(101, VC));
+  }
+  reset();
+  {
+    DerivedFromTup<std::pair<int, int>> d;
+    std::get<0>(d) = 42;
+    std::get<1>(d) = 101;
+
+    t = ValueCategoryCast<VC>(d);
+    assert(std::get<0>(t) == 42);
+    assert(std::get<1>(t).checkAssign(101, VC));
+  }
+  reset();
+  {
+#ifdef _LIBCPP_VERSION // assignment from std::array is a libc++ extension
+    DerivedFromTup<std::array<int, 2>> d;
+    std::get<0>(d) = 42;
+    std::get<1>(d) = 101;
+
+    t = ValueCategoryCast<VC>(d);
+    assert(std::get<0>(t) == 42);
+    assert(std::get<1>(t).checkAssign(101, VC));
+#endif
+  }
+}
+
+int main(int, char**) {
+    do_derived_assign_test<VC_LVal | VC_Const>();
+    do_derived_assign_test<VC_RVal>();
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/laziness.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/laziness.pass.cpp
new file mode 100644
index 0000000..267b876
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/laziness.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This test ensures that std::tuple is lazy when it comes to checking whether
+// the elements it is assigned from can be used to assign to the types in
+// the tuple.
+
+#include <tuple>
+#include <array>
+
+template <bool Enable, class ...Class>
+constexpr typename std::enable_if<Enable, bool>::type BlowUp() {
+  static_assert(Enable && sizeof...(Class) != sizeof...(Class), "");
+  return true;
+}
+
+template<class T>
+struct Fail {
+  static_assert(sizeof(T) != sizeof(T), "");
+  using type = void;
+};
+
+struct NoAssign {
+  NoAssign() = default;
+  NoAssign(NoAssign const&) = default;
+  template <class T, class = typename std::enable_if<sizeof(T) != sizeof(T)>::type>
+  NoAssign& operator=(T) { return *this; }
+};
+
+template <int>
+struct DieOnAssign {
+  DieOnAssign() = default;
+  template <class T, class X = typename std::enable_if<!std::is_same<T, DieOnAssign>::value>::type,
+                     class = typename Fail<X>::type>
+  DieOnAssign& operator=(T) {
+    return *this;
+  }
+};
+
+void test_arity_checks() {
+  {
+    using T = std::tuple<int, DieOnAssign<0>, int>;
+    using P = std::pair<int, int>;
+    static_assert(!std::is_assignable<T&, P const&>::value, "");
+  }
+  {
+    using T = std::tuple<int, int, DieOnAssign<1> >;
+    using A = std::array<int, 1>;
+    static_assert(!std::is_assignable<T&, A const&>::value, "");
+  }
+}
+
+void test_assignability_checks() {
+  {
+    using T1 = std::tuple<int, NoAssign, DieOnAssign<2> >;
+    using T2 = std::tuple<long, long, long>;
+    static_assert(!std::is_assignable<T1&, T2 const&>::value, "");
+  }
+  {
+    using T1 = std::tuple<NoAssign, DieOnAssign<3> >;
+    using T2 = std::pair<long, double>;
+    static_assert(!std::is_assignable<T1&, T2 const&>::value, "");
+  }
+}
+
+int main(int, char**) {
+  test_arity_checks();
+  test_assignability_checks();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/move.pass.cpp
new file mode 100644
index 0000000..91e5139
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/move.pass.cpp
@@ -0,0 +1,182 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// tuple& operator=(tuple&& u);
+
+// UNSUPPORTED: c++03
+
+#include <memory>
+#include <tuple>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+struct NonAssignable {
+  NonAssignable& operator=(NonAssignable const&) = delete;
+  NonAssignable& operator=(NonAssignable&&) = delete;
+};
+struct CopyAssignable {
+  CopyAssignable& operator=(CopyAssignable const&) = default;
+  CopyAssignable& operator=(CopyAssignable&&) = delete;
+};
+static_assert(std::is_copy_assignable<CopyAssignable>::value, "");
+struct MoveAssignable {
+  MoveAssignable& operator=(MoveAssignable const&) = delete;
+  MoveAssignable& operator=(MoveAssignable&&) = default;
+};
+struct NothrowMoveAssignable {
+  NothrowMoveAssignable& operator=(NothrowMoveAssignable&&) noexcept { return *this; }
+};
+struct PotentiallyThrowingMoveAssignable {
+  PotentiallyThrowingMoveAssignable& operator=(PotentiallyThrowingMoveAssignable&&) { return *this; }
+};
+
+struct CountAssign {
+  static int copied;
+  static int moved;
+  static void reset() { copied = moved = 0; }
+  CountAssign() = default;
+  CountAssign& operator=(CountAssign const&) { ++copied; return *this; }
+  CountAssign& operator=(CountAssign&&) { ++moved; return *this; }
+};
+int CountAssign::copied = 0;
+int CountAssign::moved = 0;
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t;
+        t = std::move(t0);
+    }
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(0));
+        T t;
+        t = std::move(t0);
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1));
+        T t;
+        t = std::move(t0);
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
+        T t;
+        t = std::move(t0);
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+        assert(std::get<2>(t) == 2);
+    }
+    {
+        // test reference assignment.
+        using T = std::tuple<int&, int&&>;
+        int x = 42;
+        int y = 100;
+        int x2 = -1;
+        int y2 = 500;
+        T t(x, std::move(y));
+        T t2(x2, std::move(y2));
+        t = std::move(t2);
+        assert(std::get<0>(t) == x2);
+        assert(&std::get<0>(t) == &x);
+        assert(std::get<1>(t) == y2);
+        assert(&std::get<1>(t) == &y);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+    {
+        // test that the implicitly generated move assignment operator
+        // is properly deleted
+        using T = std::tuple<std::unique_ptr<int>>;
+        static_assert(std::is_move_assignable<T>::value, "");
+        static_assert(!std::is_copy_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, NonAssignable>;
+        static_assert(!std::is_move_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, MoveAssignable>;
+        static_assert(std::is_move_assignable<T>::value, "");
+    }
+    {
+        // The move should decay to a copy.
+        CountAssign::reset();
+        using T = std::tuple<CountAssign, CopyAssignable>;
+        static_assert(std::is_move_assignable<T>::value, "");
+        T t1;
+        T t2;
+        t1 = std::move(t2);
+        assert(CountAssign::copied == 1);
+        assert(CountAssign::moved == 0);
+    }
+    {
+        using T = std::tuple<int, NonAssignable>;
+        static_assert(!std::is_move_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<int, MoveAssignable>;
+        static_assert(std::is_move_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<NothrowMoveAssignable, int>;
+        static_assert(std::is_nothrow_move_assignable<T>::value, "");
+    }
+    {
+        using T = std::tuple<PotentiallyThrowingMoveAssignable, int>;
+        static_assert(!std::is_nothrow_move_assignable<T>::value, "");
+    }
+    {
+        // We assign through the reference and don't move out of the incoming ref,
+        // so this doesn't work (but would if the type were CopyAssignable).
+        using T1 = std::tuple<MoveAssignable&, int>;
+        static_assert(!std::is_move_assignable<T1>::value, "");
+
+        // ... works if it's CopyAssignable
+        using T2 = std::tuple<CopyAssignable&, int>;
+        static_assert(std::is_move_assignable<T2>::value, "");
+
+        // For rvalue-references, we can move-assign if the type is MoveAssignable
+        // or CopyAssignable (since in the worst case the move will decay into a copy).
+        using T3 = std::tuple<MoveAssignable&&, int>;
+        using T4 = std::tuple<CopyAssignable&&, int>;
+        static_assert(std::is_move_assignable<T3>::value, "");
+        static_assert(std::is_move_assignable<T4>::value, "");
+
+        // In all cases, we can't move-assign if the types are not assignable,
+        // since we assign through the reference.
+        using T5 = std::tuple<NonAssignable&, int>;
+        using T6 = std::tuple<NonAssignable&&, int>;
+        static_assert(!std::is_move_assignable<T5>::value, "");
+        static_assert(!std::is_move_assignable<T6>::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/move_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/move_pair.pass.cpp
new file mode 100644
index 0000000..aaf9397
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.assign/move_pair.pass.cpp
@@ -0,0 +1,204 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class U1, class U2>
+//   tuple& operator=(pair<U1, U2>&& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    int id_;
+
+    explicit B(int i = 0) : id_(i) {}
+
+    virtual ~B() {}
+};
+
+struct D
+    : B
+{
+    explicit D(int i) : B(i) {}
+};
+
+struct TrackMove
+{
+    TrackMove() : value(0), moved_from(false) { }
+    explicit TrackMove(int v) : value(v), moved_from(false) { }
+    TrackMove(TrackMove const& other) : value(other.value), moved_from(false) { }
+    TrackMove(TrackMove&& other) : value(other.value), moved_from(false) {
+        other.moved_from = true;
+    }
+    TrackMove& operator=(TrackMove const& other) {
+        value = other.value;
+        moved_from = false;
+        return *this;
+    }
+    TrackMove& operator=(TrackMove&& other) {
+        value = other.value;
+        moved_from = false;
+        other.moved_from = true;
+        return *this;
+    }
+
+    int value;
+    bool moved_from;
+};
+
+struct NonAssignable
+{
+  NonAssignable& operator=(NonAssignable const&) = delete;
+  NonAssignable& operator=(NonAssignable&&) = delete;
+};
+
+struct MoveAssignable
+{
+  MoveAssignable& operator=(MoveAssignable const&) = delete;
+  MoveAssignable& operator=(MoveAssignable&&) = default;
+};
+
+struct CopyAssignable
+{
+  CopyAssignable& operator=(CopyAssignable const&) = default;
+  CopyAssignable& operator=(CopyAssignable&&) = delete;
+};
+
+struct NothrowMoveAssignable
+{
+    NothrowMoveAssignable& operator=(NothrowMoveAssignable&&) noexcept { return *this; }
+};
+
+struct PotentiallyThrowingMoveAssignable
+{
+    PotentiallyThrowingMoveAssignable& operator=(PotentiallyThrowingMoveAssignable&&) { return *this; }
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<long, std::unique_ptr<D>> T0;
+        typedef std::tuple<long long, std::unique_ptr<B>> T1;
+        T0 t0(2, std::unique_ptr<D>(new D(3)));
+        T1 t1;
+        t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1)->id_ == 3);
+    }
+    {
+        using T = std::tuple<int, NonAssignable>;
+        using P = std::pair<int, NonAssignable>;
+        static_assert(!std::is_assignable<T&, P&&>::value, "");
+    }
+    {
+      using T = std::tuple<int, int, int>;
+      using P = std::pair<int, int>;
+      static_assert(!std::is_assignable<T&, P&&>::value, "");
+    }
+    {
+        typedef std::tuple<NothrowMoveAssignable, long> Tuple;
+        typedef std::pair<NothrowMoveAssignable, int> Pair;
+        static_assert(std::is_nothrow_assignable<Tuple&, Pair&&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, Pair const&&>::value, "");
+    }
+    {
+        typedef std::tuple<PotentiallyThrowingMoveAssignable, long> Tuple;
+        typedef std::pair<PotentiallyThrowingMoveAssignable, int> Pair;
+        static_assert(std::is_assignable<Tuple&, Pair&&>::value, "");
+        static_assert(!std::is_nothrow_assignable<Tuple&, Pair&&>::value, "");
+        static_assert(!std::is_assignable<Tuple&, Pair const&&>::value, "");
+    }
+    {
+        // We assign through the reference and don't move out of the incoming ref,
+        // so this doesn't work (but would if the type were CopyAssignable).
+        {
+            using T = std::tuple<MoveAssignable&, int>;
+            using P = std::pair<MoveAssignable&, int>;
+            static_assert(!std::is_assignable<T&, P&&>::value, "");
+        }
+
+        // ... works if it's CopyAssignable
+        {
+            using T = std::tuple<CopyAssignable&, int>;
+            using P = std::pair<CopyAssignable&, int>;
+            static_assert(std::is_assignable<T&, P&&>::value, "");
+        }
+
+        // For rvalue-references, we can move-assign if the type is MoveAssignable
+        // or CopyAssignable (since in the worst case the move will decay into a copy).
+        {
+            using T1 = std::tuple<MoveAssignable&&, int>;
+            using P1 = std::pair<MoveAssignable&&, int>;
+            static_assert(std::is_assignable<T1&, P1&&>::value, "");
+
+            using T2 = std::tuple<CopyAssignable&&, int>;
+            using P2 = std::pair<CopyAssignable&&, int>;
+            static_assert(std::is_assignable<T2&, P2&&>::value, "");
+        }
+
+        // In all cases, we can't move-assign if the types are not assignable,
+        // since we assign through the reference.
+        {
+            using T1 = std::tuple<NonAssignable&, int>;
+            using P1 = std::pair<NonAssignable&, int>;
+            static_assert(!std::is_assignable<T1&, P1&&>::value, "");
+
+            using T2 = std::tuple<NonAssignable&&, int>;
+            using P2 = std::pair<NonAssignable&&, int>;
+            static_assert(!std::is_assignable<T2&, P2&&>::value, "");
+        }
+    }
+    {
+        // Make sure that we don't incorrectly move out of the source's reference.
+        using Dest = std::tuple<TrackMove, int>;
+        using Source = std::pair<TrackMove&, int>;
+        TrackMove track{3};
+        Source src(track, 4);
+        assert(!track.moved_from);
+
+        Dest dst;
+        dst = std::move(src); // here we should make a copy
+        assert(!track.moved_from);
+        assert(std::get<0>(dst).value == 3);
+    }
+    {
+        // But we do move out of the source's reference if it's a rvalue ref
+        using Dest = std::tuple<TrackMove, int>;
+        using Source = std::pair<TrackMove&&, int>;
+        TrackMove track{3};
+        Source src(std::move(track), 4);
+        assert(!track.moved_from); // we just took a reference
+
+        Dest dst;
+        dst = std::move(src);
+        assert(track.moved_from);
+        assert(std::get<0>(dst).value == 3);
+    }
+    {
+        // If the pair holds a value, then we move out of it too
+        using Dest = std::tuple<TrackMove, int>;
+        using Source = std::pair<TrackMove, int>;
+        Source src(TrackMove{3}, 4);
+        Dest dst;
+        dst = std::move(src);
+        assert(src.first.moved_from);
+        assert(std::get<0>(dst).value == 3);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.pass.cpp
new file mode 100644
index 0000000..4638169
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR20855_tuple_ref_binding_diagnostics.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// See https://llvm.org/PR20855.
+
+#include <functional>
+#include <tuple>
+#include <string>
+#include <cassert>
+#include "test_macros.h"
+
+#if TEST_HAS_BUILTIN_IDENTIFIER(__reference_binds_to_temporary)
+# define ASSERT_REFERENCE_BINDS_TEMPORARY(...) static_assert(__reference_binds_to_temporary(__VA_ARGS__), "")
+# define ASSERT_NOT_REFERENCE_BINDS_TEMPORARY(...) static_assert(!__reference_binds_to_temporary(__VA_ARGS__), "")
+#else
+# define ASSERT_REFERENCE_BINDS_TEMPORARY(...) static_assert(true, "")
+# define ASSERT_NOT_REFERENCE_BINDS_TEMPORARY(...) static_assert(true, "")
+#endif
+
+template <class Tp>
+struct ConvertsTo {
+  using RawTp = typename std::remove_cv< typename std::remove_reference<Tp>::type>::type;
+
+  operator Tp() const {
+    return static_cast<Tp>(value);
+  }
+
+  mutable RawTp value;
+};
+
+struct Base {};
+struct Derived : Base {};
+
+
+static_assert(std::is_same<decltype("abc"), decltype(("abc"))>::value, "");
+ASSERT_REFERENCE_BINDS_TEMPORARY(std::string const&, decltype("abc"));
+ASSERT_REFERENCE_BINDS_TEMPORARY(std::string const&, decltype(("abc")));
+ASSERT_REFERENCE_BINDS_TEMPORARY(std::string const&, const char*&&);
+
+ASSERT_NOT_REFERENCE_BINDS_TEMPORARY(int&, const ConvertsTo<int&>&);
+ASSERT_NOT_REFERENCE_BINDS_TEMPORARY(const int&, ConvertsTo<int&>&);
+ASSERT_NOT_REFERENCE_BINDS_TEMPORARY(Base&, Derived&);
+
+
+static_assert(std::is_constructible<int&, std::reference_wrapper<int>>::value, "");
+static_assert(std::is_constructible<int const&, std::reference_wrapper<int>>::value, "");
+
+template <class T> struct CannotDeduce {
+ using type = T;
+};
+
+template <class ...Args>
+void F(typename CannotDeduce<std::tuple<Args...>>::type const&) {}
+
+void compile_tests() {
+  {
+    F<int, int const&>(std::make_tuple(42, 42));
+  }
+  {
+    F<int, int const&>(std::make_tuple<const int&, const int&>(42, 42));
+    std::tuple<int, int const&> t(std::make_tuple<const int&, const int&>(42, 42));
+  }
+  {
+    auto fn = &F<int, std::string const&>;
+    fn(std::tuple<int, std::string const&>(42, std::string("a")));
+    fn(std::make_tuple(42, std::string("a")));
+  }
+  {
+    Derived d;
+    std::tuple<Base&, Base const&> t(d, d);
+  }
+  {
+    ConvertsTo<int&> ct;
+    std::tuple<int, int&> t(42, ct);
+  }
+}
+
+void allocator_tests() {
+    std::allocator<int> alloc;
+    int x = 42;
+    {
+        std::tuple<int&> t(std::ref(x));
+        assert(&std::get<0>(t) == &x);
+        std::tuple<int&> t1(std::allocator_arg, alloc, std::ref(x));
+        assert(&std::get<0>(t1) == &x);
+    }
+    {
+        auto r = std::ref(x);
+        auto const& cr = r;
+        std::tuple<int&> t(r);
+        assert(&std::get<0>(t) == &x);
+        std::tuple<int&> t1(cr);
+        assert(&std::get<0>(t1) == &x);
+        std::tuple<int&> t2(std::allocator_arg, alloc, r);
+        assert(&std::get<0>(t2) == &x);
+        std::tuple<int&> t3(std::allocator_arg, alloc, cr);
+        assert(&std::get<0>(t3) == &x);
+    }
+    {
+        std::tuple<int const&> t(std::ref(x));
+        assert(&std::get<0>(t) == &x);
+        std::tuple<int const&> t2(std::cref(x));
+        assert(&std::get<0>(t2) == &x);
+        std::tuple<int const&> t3(std::allocator_arg, alloc, std::ref(x));
+        assert(&std::get<0>(t3) == &x);
+        std::tuple<int const&> t4(std::allocator_arg, alloc, std::cref(x));
+        assert(&std::get<0>(t4) == &x);
+    }
+    {
+        auto r = std::ref(x);
+        auto cr = std::cref(x);
+        std::tuple<int const&> t(r);
+        assert(&std::get<0>(t) == &x);
+        std::tuple<int const&> t2(cr);
+        assert(&std::get<0>(t2) == &x);
+        std::tuple<int const&> t3(std::allocator_arg, alloc, r);
+        assert(&std::get<0>(t3) == &x);
+        std::tuple<int const&> t4(std::allocator_arg, alloc, cr);
+        assert(&std::get<0>(t4) == &x);
+    }
+}
+
+
+int main(int, char**) {
+  compile_tests();
+  allocator_tests();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR22806_constrain_tuple_like_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR22806_constrain_tuple_like_ctor.pass.cpp
new file mode 100644
index 0000000..a2d1170
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR22806_constrain_tuple_like_ctor.pass.cpp
@@ -0,0 +1,179 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// Check that the tuple-like ctors are properly disabled when the UTypes...
+// constructor should be selected.
+//
+// See https://llvm.org/PR22806.
+
+#include <cassert>
+#include <memory>
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Tp>
+using uncvref_t = typename std::remove_cv<typename std::remove_reference<Tp>::type>::type;
+
+template <class Tuple, class = uncvref_t<Tuple>>
+struct IsTuple : std::false_type {};
+
+template <class Tuple, class ...Args>
+struct IsTuple<Tuple, std::tuple<Args...>> : std::true_type {};
+
+struct ConstructibleFromTupleAndInt {
+  enum State { FromTuple, FromInt, Copied, Moved };
+  State state;
+
+  ConstructibleFromTupleAndInt(ConstructibleFromTupleAndInt const&) : state(Copied) {}
+  ConstructibleFromTupleAndInt(ConstructibleFromTupleAndInt &&) : state(Moved) {}
+
+  template <class Tuple, class = typename std::enable_if<IsTuple<Tuple>::value>::type>
+  explicit ConstructibleFromTupleAndInt(Tuple&&) : state(FromTuple) {}
+
+  explicit ConstructibleFromTupleAndInt(int) : state(FromInt) {}
+};
+
+struct ConvertibleFromTupleAndInt {
+  enum State { FromTuple, FromInt, Copied, Moved };
+  State state;
+
+  ConvertibleFromTupleAndInt(ConvertibleFromTupleAndInt const&) : state(Copied) {}
+  ConvertibleFromTupleAndInt(ConvertibleFromTupleAndInt &&) : state(Moved) {}
+
+  template <class Tuple, class = typename std::enable_if<IsTuple<Tuple>::value>::type>
+  ConvertibleFromTupleAndInt(Tuple&&) : state(FromTuple) {}
+
+  ConvertibleFromTupleAndInt(int) : state(FromInt) {}
+};
+
+struct ConstructibleFromInt {
+  enum State { FromInt, Copied, Moved };
+  State state;
+
+  ConstructibleFromInt(ConstructibleFromInt const&) : state(Copied) {}
+  ConstructibleFromInt(ConstructibleFromInt &&) : state(Moved) {}
+
+  explicit ConstructibleFromInt(int) : state(FromInt) {}
+};
+
+struct ConvertibleFromInt {
+  enum State { FromInt, Copied, Moved };
+  State state;
+
+  ConvertibleFromInt(ConvertibleFromInt const&) : state(Copied) {}
+  ConvertibleFromInt(ConvertibleFromInt &&) : state(Moved) {}
+  ConvertibleFromInt(int) : state(FromInt) {}
+};
+
+int main(int, char**)
+{
+    // Test for the creation of dangling references when a tuple is used to
+    // store a reference to another tuple as its only element.
+    // Ex std::tuple<std::tuple<int>&&>.
+    // In this case the constructors 1) 'tuple(UTypes&&...)'
+    // and 2) 'tuple(TupleLike&&)' need to be manually disambiguated because
+    // when both #1 and #2 participate in partial ordering #2 will always
+    // be chosen over #1.
+    // See PR22806  and LWG issue #2549 for more information.
+    // (https://llvm.org/PR22806)
+    using T = std::tuple<int>;
+    std::allocator<int> A;
+    { // rvalue reference
+        T t1(42);
+        std::tuple< T&& > t2(std::move(t1));
+        assert(&std::get<0>(t2) == &t1);
+    }
+    { // const lvalue reference
+        T t1(42);
+
+        std::tuple< T const & > t2(t1);
+        assert(&std::get<0>(t2) == &t1);
+
+        std::tuple< T const & > t3(static_cast<T const&>(t1));
+        assert(&std::get<0>(t3) == &t1);
+    }
+    { // lvalue reference
+        T t1(42);
+
+        std::tuple< T & > t2(t1);
+        assert(&std::get<0>(t2) == &t1);
+    }
+    { // const rvalue reference
+        T t1(42);
+
+        std::tuple< T const && > t2(std::move(t1));
+        assert(&std::get<0>(t2) == &t1);
+    }
+    { // rvalue reference via uses-allocator
+        T t1(42);
+        std::tuple< T&& > t2(std::allocator_arg, A, std::move(t1));
+        assert(&std::get<0>(t2) == &t1);
+    }
+    { // const lvalue reference via uses-allocator
+        T t1(42);
+
+        std::tuple< T const & > t2(std::allocator_arg, A, t1);
+        assert(&std::get<0>(t2) == &t1);
+
+        std::tuple< T const & > t3(std::allocator_arg, A, static_cast<T const&>(t1));
+        assert(&std::get<0>(t3) == &t1);
+    }
+    { // lvalue reference via uses-allocator
+        T t1(42);
+
+        std::tuple< T & > t2(std::allocator_arg, A, t1);
+        assert(&std::get<0>(t2) == &t1);
+    }
+    { // const rvalue reference via uses-allocator
+        T const t1(42);
+        std::tuple< T const && > t2(std::allocator_arg, A, std::move(t1));
+        assert(&std::get<0>(t2) == &t1);
+    }
+    // Test constructing a 1-tuple of the form tuple<UDT> from another 1-tuple
+    // 'tuple<T>' where UDT *can* be constructed from 'tuple<T>'. In this case
+    // the 'tuple(UTypes...)' ctor should be chosen and 'UDT' constructed from
+    // 'tuple<T>'.
+    {
+        using VT = ConstructibleFromTupleAndInt;
+        std::tuple<int> t1(42);
+        std::tuple<VT> t2(t1);
+        assert(std::get<0>(t2).state == VT::FromTuple);
+    }
+    {
+        using VT = ConvertibleFromTupleAndInt;
+        std::tuple<int> t1(42);
+        std::tuple<VT> t2 = {t1};
+        assert(std::get<0>(t2).state == VT::FromTuple);
+    }
+    // Test constructing a 1-tuple of the form tuple<UDT> from another 1-tuple
+    // 'tuple<T>' where UDT cannot be constructed from 'tuple<T>' but can
+    // be constructed from 'T'. In this case the tuple-like ctor should be
+    // chosen and 'UDT' constructed from 'T'
+    {
+        using VT = ConstructibleFromInt;
+        std::tuple<int> t1(42);
+        std::tuple<VT> t2(t1);
+        assert(std::get<0>(t2).state == VT::FromInt);
+    }
+    {
+        using VT = ConvertibleFromInt;
+        std::tuple<int> t1(42);
+        std::tuple<VT> t2 = {t1};
+        assert(std::get<0>(t2).state == VT::FromInt);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR23256_constrain_UTypes_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR23256_constrain_UTypes_ctor.pass.cpp
new file mode 100644
index 0000000..ebc31ce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR23256_constrain_UTypes_ctor.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class ...UTypes>
+//    EXPLICIT(...) tuple(UTypes&&...)
+
+// Check that the UTypes... ctor is properly disabled before evaluating any
+// SFINAE when the copy/move ctor from another tuple should clearly be selected
+// instead. This happens 'sizeof...(UTypes) == 1' and the first element of
+// 'UTypes...' is an instance of the tuple itself.
+//
+// See https://llvm.org/PR23256.
+
+#include <tuple>
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+struct UnconstrainedCtor {
+  int value_;
+
+  UnconstrainedCtor() : value_(0) {}
+
+  // Blows up when instantiated for any type other than int. Because the ctor
+  // is constexpr it is instantiated by 'is_constructible' and 'is_convertible'
+  // for Clang based compilers. GCC does not instantiate the ctor body
+  // but it does instantiate the noexcept specifier and it will blow up there.
+  template <typename T>
+  constexpr UnconstrainedCtor(T value) noexcept(noexcept(value_ = value))
+      : value_(static_cast<int>(value))
+  {
+      static_assert(std::is_same<int, T>::value, "");
+  }
+};
+
+struct ExplicitUnconstrainedCtor {
+  int value_;
+
+  ExplicitUnconstrainedCtor() : value_(0) {}
+
+  template <typename T>
+  constexpr explicit ExplicitUnconstrainedCtor(T value)
+    noexcept(noexcept(value_ = value))
+      : value_(static_cast<int>(value))
+  {
+      static_assert(std::is_same<int, T>::value, "");
+  }
+
+};
+
+int main(int, char**) {
+    typedef UnconstrainedCtor A;
+    typedef ExplicitUnconstrainedCtor ExplicitA;
+    {
+        static_assert(std::is_copy_constructible<std::tuple<A>>::value, "");
+        static_assert(std::is_move_constructible<std::tuple<A>>::value, "");
+        static_assert(std::is_copy_constructible<std::tuple<ExplicitA>>::value, "");
+        static_assert(std::is_move_constructible<std::tuple<ExplicitA>>::value, "");
+    }
+    {
+        static_assert(std::is_constructible<
+            std::tuple<A>,
+            std::allocator_arg_t, std::allocator<int>,
+            std::tuple<A> const&
+        >::value, "");
+        static_assert(std::is_constructible<
+            std::tuple<A>,
+            std::allocator_arg_t, std::allocator<int>,
+            std::tuple<A> &&
+        >::value, "");
+        static_assert(std::is_constructible<
+            std::tuple<ExplicitA>,
+            std::allocator_arg_t, std::allocator<int>,
+            std::tuple<ExplicitA> const&
+        >::value, "");
+        static_assert(std::is_constructible<
+            std::tuple<ExplicitA>,
+            std::allocator_arg_t, std::allocator<int>,
+            std::tuple<ExplicitA> &&
+        >::value, "");
+    }
+    {
+        std::tuple<A&&> t(std::forward_as_tuple(A{}));
+        ((void)t);
+        std::tuple<ExplicitA&&> t2(std::forward_as_tuple(ExplicitA{}));
+        ((void)t2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR27684_contains_ref_to_incomplete_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR27684_contains_ref_to_incomplete_type.pass.cpp
new file mode 100644
index 0000000..cdc0ec2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR27684_contains_ref_to_incomplete_type.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc> tuple(allocator_arg_t, Alloc const&)
+
+// See https://llvm.org/PR27684.
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct IncompleteType;
+extern IncompleteType inc1;
+extern IncompleteType inc2;
+IncompleteType const& cinc1 = inc1;
+IncompleteType const& cinc2 = inc2;
+
+int main(int, char**) {
+    using IT = IncompleteType;
+    { // try calling tuple(Tp const&...)
+        using Tup = std::tuple<const IT&, const IT&>;
+        Tup t(cinc1, cinc2);
+        assert(&std::get<0>(t) == &inc1);
+        assert(&std::get<1>(t) == &inc2);
+    }
+    { // try calling tuple(Up&&...)
+        using Tup = std::tuple<const IT&, const IT&>;
+        Tup t(inc1, inc2);
+        assert(&std::get<0>(t) == &inc1);
+        assert(&std::get<1>(t) == &inc2);
+    }
+
+  return 0;
+}
+
+struct IncompleteType {};
+IncompleteType inc1;
+IncompleteType inc2;
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp
new file mode 100644
index 0000000..c9e7bb6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp
@@ -0,0 +1,96 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// See https://llvm.org/PR31384.
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+int count = 0;
+
+struct Explicit {
+  Explicit() = default;
+  explicit Explicit(int) {}
+};
+
+struct Implicit {
+  Implicit() = default;
+  Implicit(int) {}
+};
+
+template<class T>
+struct Derived : std::tuple<T> {
+  using std::tuple<T>::tuple;
+  template<class U>
+  operator std::tuple<U>() && { ++count; return {}; }
+};
+
+
+template<class T>
+struct ExplicitDerived : std::tuple<T> {
+  using std::tuple<T>::tuple;
+  template<class U>
+  explicit operator std::tuple<U>() && { ++count; return {}; }
+};
+
+int main(int, char**) {
+  {
+    std::tuple<Explicit> foo = Derived<int>{42}; ((void)foo);
+    assert(count == 1);
+    Derived<int> d{42};
+    std::tuple<Explicit> bar(std::move(d)); ((void)bar);
+#if TEST_STD_VER < 17
+    assert(count == 1);
+#else
+    assert(count == 2);
+#endif
+  }
+  count = 0;
+  {
+    std::tuple<Implicit> foo = Derived<int>{42}; ((void)foo);
+    assert(count == 1);
+    Derived<int> d{42};
+    std::tuple<Implicit> bar(std::move(d)); ((void)bar);
+#if TEST_STD_VER < 17
+    assert(count == 1);
+#else
+    assert(count == 2);
+#endif
+  }
+  count = 0;
+  {
+    static_assert(!std::is_convertible<ExplicitDerived<int>, std::tuple<Explicit>>::value, "");
+    ExplicitDerived<int> d{42};
+    std::tuple<Explicit> bar(std::move(d)); ((void)bar);
+#if TEST_STD_VER < 17
+    assert(count == 0);
+#else
+    assert(count == 1);
+#endif
+  }
+  count = 0;
+  {
+    std::tuple<Implicit> foo = ExplicitDerived<int>{42}; ((void)foo);
+    static_assert(std::is_convertible<ExplicitDerived<int>, std::tuple<Implicit>>::value, "");
+    assert(count == 0);
+    ExplicitDerived<int> d{42};
+    std::tuple<Implicit> bar(std::move(d)); ((void)bar);
+#if TEST_STD_VER < 17
+    assert(count == 0);
+#else
+    assert(count == 1);
+#endif
+  }
+  count = 0;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.compile.fail.cpp
new file mode 100644
index 0000000..4a5ce6a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.compile.fail.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes>
+//   explicit tuple(UTypes&&... u);
+
+// UNSUPPORTED: c++03
+
+/*
+    This is testing an extension whereby only Types having an explicit conversion
+    from UTypes are bound by the explicit tuple constructor.
+*/
+
+#include <tuple>
+#include <cassert>
+
+class MoveOnly
+{
+    MoveOnly(const MoveOnly&);
+    MoveOnly& operator=(const MoveOnly&);
+
+    int data_;
+public:
+    explicit MoveOnly(int data = 1) : data_(data) {}
+    MoveOnly(MoveOnly&& x)
+        : data_(x.data_) {x.data_ = 0;}
+    MoveOnly& operator=(MoveOnly&& x)
+        {data_ = x.data_; x.data_ = 0; return *this;}
+
+    int get() const {return data_;}
+
+    bool operator==(const MoveOnly& x) const {return data_ == x.data_;}
+    bool operator< (const MoveOnly& x) const {return data_ <  x.data_;}
+};
+
+int main(int, char**)
+{
+    {
+        std::tuple<MoveOnly> t = 1;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.pass.cpp
new file mode 100644
index 0000000..d6e41a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/UTypes.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes>
+//   explicit tuple(UTypes&&... u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_convertible.h"
+#include "MoveOnly.h"
+
+#if TEST_STD_VER > 11
+
+struct Empty {};
+struct A
+{
+    int id_;
+    explicit constexpr A(int i) : id_(i) {}
+};
+
+#endif
+
+struct NoDefault { NoDefault() = delete; };
+
+// Make sure the _Up... constructor SFINAEs out when there are fewer
+// constructor arguments than tuple elements.
+void test_sfinae_missing_elements()
+{
+    {
+        typedef std::tuple<MoveOnly, NoDefault> Tuple;
+
+        static_assert(!std::is_constructible<
+            Tuple,
+            MoveOnly
+        >::value, "");
+
+        static_assert(std::is_constructible<
+            Tuple,
+            MoveOnly, NoDefault
+        >::value, "");
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, NoDefault> Tuple;
+
+        static_assert(!std::is_constructible<
+            Tuple,
+            MoveOnly, MoveOnly
+        >::value, "");
+
+        static_assert(std::is_constructible<
+            Tuple,
+            MoveOnly, MoveOnly, NoDefault
+        >::value, "");
+    }
+    {
+        // Same idea as above but with a nested tuple type.
+        typedef std::tuple<MoveOnly, NoDefault> Tuple;
+        typedef std::tuple<MoveOnly, Tuple, MoveOnly, MoveOnly> NestedTuple;
+
+        static_assert(!std::is_constructible<
+            NestedTuple,
+            MoveOnly, MoveOnly, MoveOnly, MoveOnly
+        >::value, "");
+
+        static_assert(std::is_constructible<
+            NestedTuple,
+            MoveOnly, Tuple, MoveOnly, MoveOnly
+        >::value, "");
+    }
+}
+
+int main(int, char**)
+{
+    {
+        std::tuple<MoveOnly> t(MoveOnly(0));
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly> t(MoveOnly(0), MoveOnly(1));
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly, MoveOnly> t(MoveOnly(0),
+                                                   MoveOnly(1),
+                                                   MoveOnly(2));
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+        assert(std::get<2>(t) == 2);
+    }
+#if TEST_STD_VER > 11
+    {
+        constexpr std::tuple<Empty> t0{Empty()};
+        (void)t0;
+    }
+    {
+        constexpr std::tuple<A, A> t(3, 2);
+        static_assert(std::get<0>(t).id_ == 3, "");
+    }
+#endif
+
+    test_sfinae_missing_elements();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.fail.cpp
new file mode 100644
index 0000000..2a89996
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc>
+//   explicit(see-below) tuple(allocator_arg_t, const Alloc& a);
+
+// Make sure we get the explicit-ness of the constructor right.
+// This is LWG 3158.
+
+#include <tuple>
+#include <memory>
+
+
+struct ExplicitDefault { explicit ExplicitDefault() { } };
+
+std::tuple<ExplicitDefault> explicit_default_test() {
+    return {std::allocator_arg, std::allocator<int>()}; // expected-error {{chosen constructor is explicit in copy-initialization}}
+}
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.pass.cpp
new file mode 100644
index 0000000..f3ddc85
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc>
+//   explicit(see-below) tuple(allocator_arg_t, const Alloc& a);
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+template <class T = void>
+struct NonDefaultConstructible {
+  constexpr NonDefaultConstructible() {
+      static_assert(!std::is_same<T, T>::value, "Default Ctor instantiated");
+  }
+
+  explicit constexpr NonDefaultConstructible(int) {}
+};
+
+
+struct DerivedFromAllocArgT : std::allocator_arg_t {};
+
+int main(int, char**)
+{
+    {
+        std::tuple<> t(std::allocator_arg, A1<int>());
+    }
+    {
+        std::tuple<int> t(std::allocator_arg, A1<int>());
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        std::tuple<DefaultOnly> t(std::allocator_arg, A1<int>());
+        assert(std::get<0>(t) == DefaultOnly());
+    }
+    {
+        assert(!alloc_first::allocator_constructed);
+        std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t) == alloc_first());
+    }
+    {
+        assert(!alloc_last::allocator_constructed);
+        std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5));
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == alloc_last());
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        std::tuple<DefaultOnly, alloc_first> t(std::allocator_arg, A1<int>(5));
+        assert(std::get<0>(t) == DefaultOnly());
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first());
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
+                                                           A1<int>(5));
+        assert(std::get<0>(t) == DefaultOnly());
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first());
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<2>(t) == alloc_last());
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        std::tuple<DefaultOnly, alloc_first, alloc_last> t(std::allocator_arg,
+                                                           A2<int>(5));
+        assert(std::get<0>(t) == DefaultOnly());
+        assert(!alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first());
+        assert(!alloc_last::allocator_constructed);
+        assert(std::get<2>(t) == alloc_last());
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::tuple<> t1(derived, A1<int>());
+        std::tuple<int> t2(derived, A1<int>());
+        std::tuple<int, int> t3(derived, A1<int>());
+    }
+    {
+        // Test that the uses-allocator default constructor does not evaluate
+        // its SFINAE when it otherwise shouldn't be selected. Do this by
+        // using 'NonDefaultConstructible' which will cause a compile error
+        // if std::is_default_constructible is evaluated on it.
+        using T = NonDefaultConstructible<>;
+        T v(42);
+        std::tuple<T, T> t(v, v);
+        (void)t;
+        std::tuple<T, T> t2(42, 42);
+        (void)t2;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_UTypes.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_UTypes.pass.cpp
new file mode 100644
index 0000000..0274683
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_UTypes.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class... UTypes>
+//   tuple(allocator_arg_t, const Alloc& a, UTypes&&...);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+template <class T = void>
+struct DefaultCtorBlowsUp {
+  constexpr DefaultCtorBlowsUp() {
+      static_assert(!std::is_same<T, T>::value, "Default Ctor instantiated");
+  }
+
+  explicit constexpr DefaultCtorBlowsUp(int x) : value(x) {}
+
+  int value;
+};
+
+
+struct DerivedFromAllocArgT : std::allocator_arg_t {};
+
+
+// Make sure the _Up... constructor SFINAEs out when the number of initializers
+// is less that the number of elements in the tuple. Previously libc++ would
+// offer these constructers as an extension but they broke conforming code.
+void test_uses_allocator_sfinae_evaluation()
+{
+     using BadDefault = DefaultCtorBlowsUp<>;
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, BadDefault> Tuple;
+
+        static_assert(!std::is_constructible<
+            Tuple,
+            std::allocator_arg_t, A1<int>, MoveOnly
+        >::value, "");
+
+        static_assert(std::is_constructible<
+            Tuple,
+            std::allocator_arg_t, A1<int>, MoveOnly, MoveOnly, BadDefault
+        >::value, "");
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, BadDefault, BadDefault> Tuple;
+
+        static_assert(!std::is_constructible<
+            Tuple,
+            std::allocator_arg_t, A1<int>, MoveOnly, MoveOnly
+        >::value, "");
+
+        static_assert(std::is_constructible<
+            Tuple,
+            std::allocator_arg_t, A1<int>, MoveOnly, MoveOnly, BadDefault, BadDefault
+        >::value, "");
+    }
+}
+
+struct Explicit {
+  int value;
+  explicit Explicit(int x) : value(x) {}
+};
+
+int main(int, char**)
+{
+    {
+        std::tuple<Explicit> t{std::allocator_arg, std::allocator<int>{}, 42};
+        assert(std::get<0>(t).value == 42);
+    }
+    {
+        std::tuple<MoveOnly> t(std::allocator_arg, A1<int>(), MoveOnly(0));
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        using T = DefaultCtorBlowsUp<>;
+        std::tuple<T> t(std::allocator_arg, A1<int>(), T(42));
+        assert(std::get<0>(t).value == 42);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly> t(std::allocator_arg, A1<int>(),
+                                         MoveOnly(0), MoveOnly(1));
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+    }
+    {
+        using T = DefaultCtorBlowsUp<>;
+        std::tuple<T, T> t(std::allocator_arg, A1<int>(), T(42), T(43));
+        assert(std::get<0>(t).value == 42);
+        assert(std::get<1>(t).value == 43);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly, MoveOnly> t(std::allocator_arg, A1<int>(),
+                                                   MoveOnly(0),
+                                                   1, 2);
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+        assert(std::get<2>(t) == 2);
+    }
+    {
+        using T = DefaultCtorBlowsUp<>;
+        std::tuple<T, T, T> t(std::allocator_arg, A1<int>(), T(1), T(2), T(3));
+        assert(std::get<0>(t).value == 1);
+        assert(std::get<1>(t).value == 2);
+        assert(std::get<2>(t).value == 3);
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        std::tuple<int, alloc_first, alloc_last> t(std::allocator_arg,
+                                                   A1<int>(5), 1, 2, 3);
+        assert(std::get<0>(t) == 1);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first(2));
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<2>(t) == alloc_last(3));
+    }
+    {
+        // Check that uses-allocator construction is still selected when
+        // given a tag type that derives from allocator_arg_t.
+        DerivedFromAllocArgT tag;
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        std::tuple<int, alloc_first, alloc_last> t(tag,
+                                                   A1<int>(5), 1, 2, 3);
+        assert(std::get<0>(t) == 1);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first(2));
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<2>(t) == alloc_last(3));
+    }
+    // Stress test the SFINAE on the uses-allocator constructors and
+    // ensure that the "reduced-arity-initialization" extension is not offered
+    // for these constructors.
+    test_uses_allocator_sfinae_evaluation();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_Types.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_Types.fail.cpp
new file mode 100644
index 0000000..1a1e8d2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_Types.fail.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc>
+//   EXPLICIT tuple(allocator_arg_t, const Alloc& a, const Types&...);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <memory>
+#include <cassert>
+
+struct ExplicitCopy {
+  explicit ExplicitCopy(ExplicitCopy const&) {}
+  explicit ExplicitCopy(int) {}
+};
+
+std::tuple<ExplicitCopy> const_explicit_copy_test() {
+    const ExplicitCopy e(42);
+    return {std::allocator_arg, std::allocator<int>{}, e};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+
+std::tuple<ExplicitCopy> non_const_explicity_copy_test() {
+    ExplicitCopy e(42);
+    return {std::allocator_arg, std::allocator<int>{}, e};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+int main(int, char**)
+{
+    const_explicit_copy_test();
+    non_const_explicity_copy_test();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_Types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_Types.pass.cpp
new file mode 100644
index 0000000..2ded9d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_Types.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc>
+//   tuple(allocator_arg_t, const Alloc& a, const Types&...);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+struct ImplicitCopy {
+  explicit ImplicitCopy(int) {}
+  ImplicitCopy(ImplicitCopy const&) {}
+};
+
+// Test that tuple(std::allocator_arg, Alloc, Types const&...) allows implicit
+// copy conversions in return value expressions.
+std::tuple<ImplicitCopy> testImplicitCopy1() {
+    ImplicitCopy i(42);
+    return {std::allocator_arg, std::allocator<int>{}, i};
+}
+
+std::tuple<ImplicitCopy> testImplicitCopy2() {
+    const ImplicitCopy i(42);
+    return {std::allocator_arg, std::allocator<int>{}, i};
+}
+
+int main(int, char**)
+{
+    {
+        // check that the literal '0' can implicitly initialize a stored pointer.
+        std::tuple<int*>{std::allocator_arg, std::allocator<int>{}, 0};
+    }
+    {
+        std::tuple<int> t(std::allocator_arg, A1<int>(), 3);
+        assert(std::get<0>(t) == 3);
+    }
+    {
+        assert(!alloc_first::allocator_constructed);
+        std::tuple<alloc_first> t(std::allocator_arg, A1<int>(5), alloc_first(3));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t) == alloc_first(3));
+    }
+    {
+        assert(!alloc_last::allocator_constructed);
+        std::tuple<alloc_last> t(std::allocator_arg, A1<int>(5), alloc_last(3));
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == alloc_last(3));
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        std::tuple<int, alloc_first> t(std::allocator_arg, A1<int>(5),
+                                       10, alloc_first(15));
+        assert(std::get<0>(t) == 10);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first(15));
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        std::tuple<int, alloc_first, alloc_last> t(std::allocator_arg,
+                                                   A1<int>(5), 1, alloc_first(2),
+                                                   alloc_last(3));
+        assert(std::get<0>(t) == 1);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first(2));
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<2>(t) == alloc_last(3));
+    }
+    {
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        std::tuple<int, alloc_first, alloc_last> t(std::allocator_arg,
+                                                   A2<int>(5), 1, alloc_first(2),
+                                                   alloc_last(3));
+        assert(std::get<0>(t) == 1);
+        assert(!alloc_first::allocator_constructed);
+        assert(std::get<1>(t) == alloc_first(2));
+        assert(!alloc_last::allocator_constructed);
+        assert(std::get<2>(t) == alloc_last(3));
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::tuple<> t1(derived, A1<int>());
+        std::tuple<int> t2(derived, A1<int>(), 1);
+        std::tuple<int, int> t3(derived, A1<int>(), 1, 2);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_move_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_move_pair.pass.cpp
new file mode 100644
index 0000000..74d071e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_move_pair.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template <class Alloc, class U1, class U2>
+// constexpr explicit(see below)
+//   tuple<Types...>::tuple(allocator_arg_t, const Alloc& a, const pair<U1,
+//   U2>&& u);
+
+// Constraints:
+// - sizeof...(Types) is 2 and
+// - is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// - is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "copy_move_types.h"
+#include "test_allocator.h"
+
+// test constraints
+// sizeof...(Types) == 2
+static_assert(std::is_constructible_v<std::tuple<ConstMove, int>, std::allocator_arg_t, test_allocator<int>,
+                                      const std::pair<ConstMove, int>&&>);
+
+static_assert(!std::is_constructible_v< std::tuple<ConstMove>, std::allocator_arg_t, test_allocator<int>,
+                                        const std::pair<ConstMove, int>&&>);
+
+static_assert(!std::is_constructible_v< std::tuple<ConstMove, int, int>, std::allocator_arg_t, test_allocator<int>,
+                                        const std::pair<ConstMove, int>&&>);
+
+// test constraints
+// is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+static_assert(std::is_constructible_v<std::tuple<int, int>, std::allocator_arg_t, test_allocator<int>,
+                                      const std::pair<int, int>&&>);
+
+static_assert(!std::is_constructible_v< std::tuple<NoConstructorFromInt, int>, std::allocator_arg_t,
+                                        test_allocator<int>, const std::pair<int, int>&&>);
+
+static_assert(!std::is_constructible_v< std::tuple<int, NoConstructorFromInt>, std::allocator_arg_t,
+                                        test_allocator<int>, const std::pair<int, int>&&>);
+
+static_assert(!std::is_constructible_v< std::tuple<NoConstructorFromInt, NoConstructorFromInt>, std::allocator_arg_t,
+                                        test_allocator<int>, const std::pair<int, int>&&>);
+
+// test: The expression inside explicit is equivalent to:
+// !is_convertible_v<decltype(get<0>(FWD(u))), T0> ||
+// !is_convertible_v<decltype(get<1>(FWD(u))), T1>
+static_assert(
+    ImplicitlyConstructible< std::tuple<ConvertibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>, std::allocator_arg_t,
+                             test_allocator<int>, const std::pair<ConstMove, ConstMove>&&>);
+
+static_assert(
+    !ImplicitlyConstructible<std::tuple<ConvertibleFrom<ConstMove>, ExplicitConstructibleFrom<ConstMove>>,
+                             std::allocator_arg_t, test_allocator<int>, const std::pair<ConstMove, ConstMove>&&>);
+
+static_assert(
+    !ImplicitlyConstructible<std::tuple<ExplicitConstructibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>,
+                             std::allocator_arg_t, test_allocator<int>, const std::pair<ConstMove, ConstMove>&&>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  {
+    const std::pair<ConstMove, int> p{1, 2};
+    std::tuple<ConvertibleFrom<ConstMove>, ConvertibleFrom<int>> t = {std::allocator_arg, test_allocator<int>{},
+                                                                      std::move(p)};
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+    assert(std::get<0>(t).alloc_constructed);
+    assert(std::get<1>(t).alloc_constructed);
+  }
+
+  // test explicit conversions.
+  {
+    const std::pair<ConstMove, int> p{1, 2};
+    std::tuple<ExplicitConstructibleFrom<ConstMove>, ExplicitConstructibleFrom<int>> t{
+        std::allocator_arg, test_allocator<int>{}, std::move(p)};
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+    assert(std::get<0>(t).alloc_constructed);
+    assert(std::get<1>(t).alloc_constructed);
+  }
+
+  // non const overload should be called
+  {
+    const std::pair<TracedCopyMove, TracedCopyMove> p;
+    std::tuple<ConvertibleFrom<TracedCopyMove>, TracedCopyMove> t = {std::allocator_arg, test_allocator<int>{},
+                                                                     std::move(p)};
+    assert(constMoveCtrCalled(std::get<0>(t).v));
+    assert(constMoveCtrCalled(std::get<1>(t)));
+    assert(std::get<0>(t).alloc_constructed);
+    assert(std::get<1>(t).alloc_constructed);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_pair.pass.cpp
new file mode 100644
index 0000000..6b81f71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_const_pair.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class U1, class U2>
+//   tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<long, int> T0;
+        typedef std::tuple<long long, double> T1;
+        T0 t0(2, 3);
+        T1 t1(std::allocator_arg, A1<int>(5), t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == 3);
+    }
+    {
+        typedef std::pair<int, int> T0;
+        typedef std::tuple<alloc_first, double> T1;
+        T0 t0(2, 3);
+        alloc_first::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == 3);
+    }
+    {
+        typedef std::pair<int, int> T0;
+        typedef std::tuple<alloc_first, alloc_last> T1;
+        T0 t0(2, 3);
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == 3);
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::pair<int, int> p(1, 2);
+        std::tuple<int, int> t(derived, A1<int>(), p);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_const_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_const_move.pass.cpp
new file mode 100644
index 0000000..4714310
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_const_move.pass.cpp
@@ -0,0 +1,156 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template<class Alloc, class... UTypes>
+//   constexpr explicit(see below)
+//     tuple<Types...>::tuple(allocator_arg_t, const Alloc& a,
+//     const tuple<UTypes...>&&);
+//
+// Constraints:
+//  sizeof...(Types) equals sizeof...(UTypes) &&
+//  (is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...) is true &&
+//  (
+//    sizeof...(Types) is not 1 ||
+//    (
+//      !is_convertible_v<decltype(u), T> &&
+//      !is_constructible_v<T, decltype(u)> &&
+//      !is_same_v<T, U>
+//    )
+//  )
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+
+#include "copy_move_types.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+// test: The expression inside explicit is equivalent to:
+// !(is_convertible_v<decltype(get<I>(FWD(u))), Types> && ...)
+static_assert(ImplicitlyConstructible< std::tuple<ConvertibleFrom<ConstMove>>, std::allocator_arg_t,
+                                       const test_allocator<int>&, const std::tuple<ConstMove>&&>);
+
+static_assert(
+    ImplicitlyConstructible< std::tuple<ConvertibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>, std::allocator_arg_t,
+                             const test_allocator<int>&, const std::tuple<ConstMove, ConstMove>&&>);
+
+static_assert(!ImplicitlyConstructible<std::tuple<ExplicitConstructibleFrom<ConstMove>>, std::allocator_arg_t,
+                                       const test_allocator<int>&, const std::tuple<ConstMove>&&>);
+
+static_assert(!ImplicitlyConstructible<std::tuple<ExplicitConstructibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>,
+                                       std::allocator_arg_t, const test_allocator<int>&,
+                                       const std::tuple<ConstMove, ConstMove>&&>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  // sizeof...(Types) == 1
+  {
+    const std::tuple<ConstMove> t1{1};
+    std::tuple<ConvertibleFrom<ConstMove>> t2 = {std::allocator_arg, test_allocator<int>{}, std::move(t1)};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test implicit conversions.
+  // sizeof...(Types) > 1
+  {
+    const std::tuple<ConstMove, int> t1{1, 2};
+    std::tuple<ConvertibleFrom<ConstMove>, int> t2 = {std::allocator_arg_t{}, test_allocator<int>{}, std::move(t1)};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) == 1
+  {
+    const std::tuple<ConstMove> t1{1};
+    std::tuple<ExplicitConstructibleFrom<ConstMove>> t2{std::allocator_arg_t{}, test_allocator<int>{}, std::move(t1)};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) > 1
+  {
+    const std::tuple<ConstMove, int> t1{1, 2};
+    std::tuple<ExplicitConstructibleFrom<ConstMove>, int> t2{std::allocator_arg_t{}, test_allocator<int>{},
+                                                             std::move(t1)};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test constraints
+
+  // sizeof...(Types) != sizeof...(UTypes)
+  static_assert(!std::is_constructible_v<std::tuple<int, int>, std::allocator_arg_t, const test_allocator<int>&,
+                                         const std::tuple<int>&&>);
+  static_assert(!std::is_constructible_v<std::tuple<int, int, int>, std::allocator_arg_t, const test_allocator<int>&,
+                                         const std::tuple<int, int>&&>);
+
+  // !(is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...)
+  static_assert(!std::is_constructible_v< std::tuple<int, NoConstructorFromInt>, std::allocator_arg_t,
+                                          const test_allocator<int>&, const std::tuple<int, int>&&>);
+
+  // sizeof...(Types) == 1 && other branch of "||" satisfied
+  {
+    const std::tuple<TracedCopyMove> t1{};
+    std::tuple<ConvertibleFrom<TracedCopyMove>> t2{std::allocator_arg_t{}, test_allocator<int>{}, std::move(t1)};
+    assert(constMoveCtrCalled(std::get<0>(t2).v));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // sizeof...(Types) == 1 && is_same_v<T, U>
+  {
+    const std::tuple<TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove> t2{std::allocator_arg_t{}, test_allocator<int>{}, std::move(t1)};
+    assert(!constMoveCtrCalled(std::get<0>(t2)));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // sizeof...(Types) != 1
+  {
+    const std::tuple<TracedCopyMove, TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove, TracedCopyMove> t2{std::allocator_arg_t{}, test_allocator<int>{}, std::move(t1)};
+    assert(constMoveCtrCalled(std::get<0>(std::move(t2))));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // These two test points cause gcc to ICE
+#if !defined(TEST_COMPILER_GCC)
+  // sizeof...(Types) == 1 && is_convertible_v<decltype(u), T>
+  {
+    const std::tuple<CvtFromTupleRef> t1{};
+    std::tuple<ConvertibleFrom<CvtFromTupleRef>> t2{std::allocator_arg_t{}, test_allocator<int>{}, std::move(t1)};
+    assert(!constMoveCtrCalled(std::get<0>(t2).v));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // sizeof...(Types) == 1 && is_constructible_v<decltype(u), T>
+  {
+    const std::tuple<ExplicitCtrFromTupleRef> t1{};
+    std::tuple<ConvertibleFrom<ExplicitCtrFromTupleRef>> t2{std::allocator_arg_t{}, test_allocator<int>{},
+                                                            std::move(t1)};
+    assert(!constMoveCtrCalled(std::get<0>(t2).v));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+#endif
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_copy.fail.cpp
new file mode 100644
index 0000000..b5b7de7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_copy.fail.cpp
@@ -0,0 +1,44 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class ...UTypes>
+//   tuple(allocator_arg_t, const Alloc& a, tuple<UTypes...> const&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <memory>
+
+struct ExplicitCopy {
+  explicit ExplicitCopy(int) {}
+  explicit ExplicitCopy(ExplicitCopy const&) {}
+
+};
+
+std::tuple<ExplicitCopy> const_explicit_copy_test() {
+    const std::tuple<int> t1(42);
+    return {std::allocator_arg, std::allocator<int>{}, t1};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+
+std::tuple<ExplicitCopy> non_const_explicit_copy_test() {
+    std::tuple<int> t1(42);
+    return {std::allocator_arg, std::allocator<int>{}, t1};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+
+int main(int, char**)
+{
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_copy.pass.cpp
new file mode 100644
index 0000000..40b5cda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_copy.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class... UTypes>
+// constexpr                                        // since c++20
+//   tuple(allocator_arg_t, const Alloc& a, const tuple<UTypes...>&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "test_allocator.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+struct Explicit {
+  int value;
+  explicit Explicit(int x) : value(x) {}
+};
+
+struct Implicit {
+  int value;
+  Implicit(int x) : value(x) {}
+};
+
+#if TEST_STD_VER > 17
+constexpr bool alloc_copy_constructor_is_constexpr() {
+  const std::tuple<int> t1 = 1;
+  std::tuple<int> t2 = {std::allocator_arg, test_allocator<int>{}, t1};
+  assert(std::get<0>(t2) == 1);
+  return true;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<long> T0;
+        typedef std::tuple<long long> T1;
+        T0 t0(2);
+        T1 t1(std::allocator_arg, A1<int>(), t0);
+        assert(std::get<0>(t1) == 2);
+    }
+    {
+        typedef std::tuple<int> T0;
+        typedef std::tuple<alloc_first> T1;
+        T0 t0(2);
+        alloc_first::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+    }
+    {
+        typedef std::tuple<int, int> T0;
+        typedef std::tuple<alloc_first, alloc_last> T1;
+        T0 t0(2, 3);
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == 3);
+    }
+    {
+        typedef std::tuple<long, int, int> T0;
+        typedef std::tuple<long long, alloc_first, alloc_last> T1;
+        T0 t0(1, 2, 3);
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t1) == 1);
+        assert(std::get<1>(t1) == 2);
+        assert(std::get<2>(t1) == 3);
+    }
+    {
+        const std::tuple<int> t1(42);
+        std::tuple<Explicit> t2{std::allocator_arg, std::allocator<int>{},  t1};
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        const std::tuple<int> t1(42);
+        std::tuple<Implicit> t2 = {std::allocator_arg, std::allocator<int>{}, t1};
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::tuple<long> from(3l);
+        std::tuple<long long> t0(derived, A1<int>(), from);
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(alloc_copy_constructor_is_constexpr());
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_move.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_move.fail.cpp
new file mode 100644
index 0000000..9202086
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_move.fail.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class ...UTypes>
+//   tuple(allocator_arg_t, const Alloc& a, tuple<UTypes...>&&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <memory>
+
+struct ExplicitCopy {
+  explicit ExplicitCopy(int) {}
+  explicit ExplicitCopy(ExplicitCopy const&) {}
+};
+
+std::tuple<ExplicitCopy> explicit_move_test() {
+    std::tuple<int> t1(42);
+    return {std::allocator_arg, std::allocator<int>{}, std::move(t1)};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+
+int main(int, char**)
+{
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_move.pass.cpp
new file mode 100644
index 0000000..6d22363
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_move.pass.cpp
@@ -0,0 +1,127 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class... UTypes>
+//   tuple(allocator_arg_t, const Alloc& a, tuple<UTypes...>&&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "test_allocator.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+struct B
+{
+    int id_;
+
+    explicit B(int i) : id_(i) {}
+
+    virtual ~B() {}
+};
+
+struct D
+    : B
+{
+    explicit D(int i) : B(i) {}
+};
+
+struct Explicit {
+  int value;
+  explicit Explicit(int x) : value(x) {}
+};
+
+struct Implicit {
+  int value;
+  Implicit(int x) : value(x) {}
+};
+
+#if TEST_STD_VER > 17
+constexpr bool alloc_move_constructor_is_constexpr() {
+  std::tuple<int> t1 = 1;
+  std::tuple<int> t2 = {std::allocator_arg, test_allocator<int>{}, std::move(t1)};
+  assert(std::get<0>(t2) == 1);
+  return true;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<int> T0;
+        typedef std::tuple<alloc_first> T1;
+        T0 t0(2);
+        alloc_first::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+    }
+    {
+        typedef std::tuple<std::unique_ptr<D>> T0;
+        typedef std::tuple<std::unique_ptr<B>> T1;
+        T0 t0(std::unique_ptr<D>(new D(3)));
+        T1 t1(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(std::get<0>(t1)->id_ == 3);
+    }
+    {
+        typedef std::tuple<int, std::unique_ptr<D>> T0;
+        typedef std::tuple<alloc_first, std::unique_ptr<B>> T1;
+        T0 t0(2, std::unique_ptr<D>(new D(3)));
+        alloc_first::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1)->id_ == 3);
+    }
+    {
+        typedef std::tuple<int, int, std::unique_ptr<D>> T0;
+        typedef std::tuple<alloc_last, alloc_first, std::unique_ptr<B>> T1;
+        T0 t0(1, 2, std::unique_ptr<D>(new D(3)));
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t1) == 1);
+        assert(std::get<1>(t1) == 2);
+        assert(std::get<2>(t1)->id_ == 3);
+    }
+    {
+        std::tuple<int> t1(42);
+        std::tuple<Explicit> t2{std::allocator_arg, std::allocator<int>{}, std::move(t1)};
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        std::tuple<int> t1(42);
+        std::tuple<Implicit> t2 = {std::allocator_arg, std::allocator<int>{}, std::move(t1)};
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::tuple<long> from(3l);
+        std::tuple<long long> t0(derived, A1<int>(), std::move(from));
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(alloc_move_constructor_is_constexpr());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_non_const_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_non_const_copy.pass.cpp
new file mode 100644
index 0000000..b7be68e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_convert_non_const_copy.pass.cpp
@@ -0,0 +1,154 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template<class Alloc, class... UTypes>
+//   constexpr explicit(see below)
+//     tuple<Types...>::tuple(allocator_arg_t, const Alloc& a,
+//     tuple<UTypes...>&);
+//
+// Constraints:
+//  sizeof...(Types) equals sizeof...(UTypes) &&
+//  (is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...) is true &&
+//  (
+//    sizeof...(Types) is not 1 ||
+//    (
+//      !is_convertible_v<decltype(u), T> &&
+//      !is_constructible_v<T, decltype(u)> &&
+//      !is_same_v<T, U>
+//    )
+//  )
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+
+#include "copy_move_types.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+// test: The expression inside explicit is equivalent to:
+// !(is_convertible_v<decltype(get<I>(FWD(u))), Types> && ...)
+static_assert(ImplicitlyConstructible< std::tuple<ConvertibleFrom<MutableCopy>>, std::allocator_arg_t,
+                                       const test_allocator<int>&, std::tuple<MutableCopy>&>);
+
+static_assert(
+    ImplicitlyConstructible< std::tuple<ConvertibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>,
+                             std::allocator_arg_t, const test_allocator<int>&, std::tuple<MutableCopy, MutableCopy>&>);
+
+static_assert(!ImplicitlyConstructible<std::tuple<ExplicitConstructibleFrom<MutableCopy>>, std::allocator_arg_t,
+                                       const test_allocator<int>&, std::tuple<MutableCopy>&>);
+
+static_assert(
+    !ImplicitlyConstructible<std::tuple<ExplicitConstructibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>,
+                             std::allocator_arg_t, const test_allocator<int>&, std::tuple<MutableCopy, MutableCopy>&>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  // sizeof...(Types) == 1
+  {
+    std::tuple<MutableCopy> t1{1};
+    std::tuple<ConvertibleFrom<MutableCopy>> t2 = {std::allocator_arg, test_allocator<int>{}, t1};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test implicit conversions.
+  // sizeof...(Types) > 1
+  {
+    std::tuple<MutableCopy, int> t1{1, 2};
+    std::tuple<ConvertibleFrom<MutableCopy>, int> t2 = {std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) == 1
+  {
+    std::tuple<MutableCopy> t1{1};
+    std::tuple<ExplicitConstructibleFrom<MutableCopy>> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) > 1
+  {
+    std::tuple<MutableCopy, int> t1{1, 2};
+    std::tuple<ExplicitConstructibleFrom<MutableCopy>, int> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // test constraints
+
+  // sizeof...(Types) != sizeof...(UTypes)
+  static_assert(!std::is_constructible_v<std::tuple<int, int>, std::allocator_arg_t, const test_allocator<int>&,
+                                         std::tuple<int>&>);
+  static_assert(!std::is_constructible_v<std::tuple<int, int, int>, std::allocator_arg_t, const test_allocator<int>&,
+                                         std::tuple<int, int>&>);
+
+  // !(is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...)
+  static_assert(!std::is_constructible_v< std::tuple<int, NoConstructorFromInt>, std::allocator_arg_t,
+                                          const test_allocator<int>&, std::tuple<int, int>&>);
+
+  // sizeof...(Types) == 1 && other branch of "||" satisfied
+  {
+    std::tuple<TracedCopyMove> t1{};
+    std::tuple<ConvertibleFrom<TracedCopyMove>> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(nonConstCopyCtrCalled(std::get<0>(t2).v));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // sizeof...(Types) == 1 && is_same_v<T, U>
+  {
+    std::tuple<TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(!nonConstCopyCtrCalled(std::get<0>(t2)));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // sizeof...(Types) != 1
+  {
+    std::tuple<TracedCopyMove, TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove, TracedCopyMove> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(nonConstCopyCtrCalled(std::get<0>(t2)));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // These two test points cause gcc to ICE
+#if !defined(TEST_COMPILER_GCC)
+  // sizeof...(Types) == 1 && is_convertible_v<decltype(u), T>
+  {
+    std::tuple<CvtFromTupleRef> t1{};
+    std::tuple<ConvertibleFrom<CvtFromTupleRef>> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(!nonConstCopyCtrCalled(std::get<0>(t2).v));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+
+  // sizeof...(Types) == 1 && is_constructible_v<decltype(u), T>
+  {
+    std::tuple<ExplicitCtrFromTupleRef> t1{};
+    std::tuple<ConvertibleFrom<ExplicitCtrFromTupleRef>> t2{std::allocator_arg_t{}, test_allocator<int>{}, t1};
+    assert(!nonConstCopyCtrCalled(std::get<0>(t2).v));
+    assert(std::get<0>(t2).alloc_constructed);
+  }
+#endif
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_copy.pass.cpp
new file mode 100644
index 0000000..72a8fbf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_copy.pass.cpp
@@ -0,0 +1,87 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc>
+//   tuple(allocator_arg_t, const Alloc& a, const tuple&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t(std::allocator_arg, A1<int>(), t0);
+    }
+    {
+        typedef std::tuple<int> T;
+        T t0(2);
+        T t(std::allocator_arg, A1<int>(), t0);
+        assert(std::get<0>(t) == 2);
+    }
+    {
+        typedef std::tuple<alloc_first> T;
+        T t0(2);
+        alloc_first::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t) == 2);
+    }
+    {
+        typedef std::tuple<alloc_last> T;
+        T t0(2);
+        alloc_last::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == 2);
+    }
+    {
+        typedef std::tuple<alloc_first, alloc_last> T;
+        T t0(2, 3);
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == 3);
+    }
+    {
+        typedef std::tuple<int, alloc_first, alloc_last> T;
+        T t0(1, 2, 3);
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), t0);
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == 1);
+        assert(std::get<1>(t) == 2);
+        assert(std::get<2>(t) == 3);
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::tuple<int> from(3);
+        std::tuple<int> t0(derived, A1<int>(), from);
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move.pass.cpp
new file mode 100644
index 0000000..d13f76f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc>
+//   tuple(allocator_arg_t, const Alloc& a, tuple&&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t(std::allocator_arg, A1<int>(), std::move(t0));
+    }
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(0));
+        T t(std::allocator_arg, A1<int>(), std::move(t0));
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        typedef std::tuple<alloc_first> T;
+        T t0(1);
+        alloc_first::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t) == 1);
+    }
+    {
+        typedef std::tuple<alloc_last> T;
+        T t0(1);
+        alloc_last::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == 1);
+    }
+    {
+        typedef std::tuple<MoveOnly, alloc_first> T;
+        T t0(0 ,1);
+        alloc_first::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+    }
+    {
+        typedef std::tuple<MoveOnly, alloc_first, alloc_last> T;
+        T t0(1, 2, 3);
+        alloc_first::allocator_constructed = false;
+        alloc_last::allocator_constructed = false;
+        T t(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(alloc_last::allocator_constructed);
+        assert(std::get<0>(t) == 1);
+        assert(std::get<1>(t) == 2);
+        assert(std::get<2>(t) == 3);
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::tuple<int> from(3);
+        std::tuple<int> t0(derived, A1<int>(), std::move(from));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move_pair.pass.cpp
new file mode 100644
index 0000000..e7e438e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_move_pair.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class Alloc, class U1, class U2>
+//   tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "allocators.h"
+#include "../alloc_first.h"
+#include "../alloc_last.h"
+
+struct B
+{
+    int id_;
+
+    explicit B(int i) : id_(i) {}
+
+    virtual ~B() {}
+};
+
+struct D
+    : B
+{
+    explicit D(int i) : B(i) {}
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, std::unique_ptr<D>> T0;
+        typedef std::tuple<alloc_first, std::unique_ptr<B>> T1;
+        T0 t0(2, std::unique_ptr<D>(new D(3)));
+        alloc_first::allocator_constructed = false;
+        T1 t1(std::allocator_arg, A1<int>(5), std::move(t0));
+        assert(alloc_first::allocator_constructed);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1)->id_ == 3);
+    }
+    {
+        // Test that we can use a tag derived from allocator_arg_t
+        struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
+        DerivedFromAllocatorArgT derived;
+        std::pair<int, int> from(1, 2);
+        std::tuple<int, int> t0(derived, A1<int>(), std::move(from));
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_non_const_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_non_const_pair.pass.cpp
new file mode 100644
index 0000000..ab24afc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/alloc_non_const_pair.pass.cpp
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template <class Alloc, class U1, class U2>
+// constexpr explicit(see below)
+//  tuple<Types...>::tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>& u);
+
+// Constraints:
+// - sizeof...(Types) is 2 and
+// - is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// - is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "copy_move_types.h"
+#include "test_allocator.h"
+
+// test constraints
+// sizeof...(Types) == 2
+static_assert(std::is_constructible_v<std::tuple<MutableCopy, int>, std::allocator_arg_t, test_allocator<int>,
+                                      std::pair<MutableCopy, int>&>);
+
+static_assert(!std::is_constructible_v< std::tuple<MutableCopy>, std::allocator_arg_t, test_allocator<int>,
+                                        std::pair<MutableCopy, int>&>);
+
+static_assert(!std::is_constructible_v< std::tuple<MutableCopy, int, int>, std::allocator_arg_t, test_allocator<int>,
+                                        std::pair<MutableCopy, int>&>);
+
+// test constraints
+// is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+static_assert(
+    std::is_constructible_v<std::tuple<int, int>, std::allocator_arg_t, test_allocator<int>, std::pair<int, int>&>);
+
+static_assert(!std::is_constructible_v< std::tuple<NoConstructorFromInt, int>, std::allocator_arg_t,
+                                        test_allocator<int>, std::pair<int, int>&>);
+
+static_assert(!std::is_constructible_v< std::tuple<int, NoConstructorFromInt>, std::allocator_arg_t,
+                                        test_allocator<int>, std::pair<int, int>&>);
+
+static_assert(!std::is_constructible_v< std::tuple<NoConstructorFromInt, NoConstructorFromInt>, std::allocator_arg_t,
+                                        test_allocator<int>, std::pair<int, int>&>);
+
+// test: The expression inside explicit is equivalent to:
+// !is_convertible_v<decltype(get<0>(FWD(u))), T0> ||
+// !is_convertible_v<decltype(get<1>(FWD(u))), T1>
+static_assert(ImplicitlyConstructible<std::tuple<ConvertibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>,
+                                      std::allocator_arg_t, test_allocator<int>, std::pair<MutableCopy, MutableCopy>&>);
+
+static_assert(
+    !ImplicitlyConstructible<std::tuple<ConvertibleFrom<MutableCopy>, ExplicitConstructibleFrom<MutableCopy>>,
+                             std::allocator_arg_t, test_allocator<int>, std::pair<MutableCopy, MutableCopy>&>);
+
+static_assert(
+    !ImplicitlyConstructible<std::tuple<ExplicitConstructibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>,
+                             std::allocator_arg_t, test_allocator<int>, std::pair<MutableCopy, MutableCopy>&>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  {
+    std::pair<MutableCopy, int> p{1, 2};
+    std::tuple<ConvertibleFrom<MutableCopy>, ConvertibleFrom<int>> t = {std::allocator_arg, test_allocator<int>{}, p};
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+    assert(std::get<0>(t).alloc_constructed);
+    assert(std::get<1>(t).alloc_constructed);
+  }
+
+  // test explicit conversions.
+  {
+    std::pair<MutableCopy, int> p{1, 2};
+    std::tuple<ExplicitConstructibleFrom<MutableCopy>, ExplicitConstructibleFrom<int>> t{std::allocator_arg,
+                                                                                         test_allocator<int>{}, p};
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+    assert(std::get<0>(t).alloc_constructed);
+    assert(std::get<1>(t).alloc_constructed);
+  }
+
+  // non const overload should be called
+  {
+    std::pair<TracedCopyMove, TracedCopyMove> p;
+    std::tuple<ConvertibleFrom<TracedCopyMove>, TracedCopyMove> t = {std::allocator_arg, test_allocator<int>{}, p};
+    assert(nonConstCopyCtrCalled(std::get<0>(t).v));
+    assert(nonConstCopyCtrCalled(std::get<1>(t)));
+    assert(std::get<0>(t).alloc_constructed);
+    assert(std::get<1>(t).alloc_constructed);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/cnstr_with_any.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/cnstr_with_any.compile.pass.cpp
new file mode 100644
index 0000000..5c6ca1c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/cnstr_with_any.compile.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// This test makes sure that we can copy/move a std::tuple containing a type
+// that checks for copy constructibility itself, like std::any.
+//
+// Problem showcased in https://reviews.llvm.org/D96523#2730953.
+
+#include <any>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+template <class ...Pred>
+struct And : std::true_type { };
+
+template <class P1, class ...Pn>
+struct And<P1, Pn...>
+  : std::conditional<P1::value, And<Pn...>, std::false_type>::type
+{ };
+
+struct any {
+  any();
+  any(any const&) = default;
+
+  template <class ValueType,
+            class Decayed = typename std::decay<ValueType>::type,
+            class = typename std::enable_if<
+              !std::is_same<Decayed, any>::value &&
+              std::is_copy_constructible<Decayed>::value
+            >::type>
+  any(ValueType&&);
+};
+
+struct A {
+  A();
+  A(any);
+};
+
+#if TEST_STD_VER > 14
+struct B {
+  B();
+  B(std::any);
+};
+#endif
+
+void f() {
+  {
+    std::tuple<A, int> x;
+    std::tuple<A, int> y = x; (void)y;
+  }
+  {
+    std::tuple<A, int> x;
+    std::tuple<A, int> y = std::move(x); (void)y;
+  }
+
+#if TEST_STD_VER > 14
+  {
+    std::tuple<B, int> x;
+    std::tuple<B, int> y = x; (void)y;
+  }
+  {
+    std::tuple<B, int> x;
+    std::tuple<B, int> y = std::move(x); (void)y;
+  }
+#endif
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.fail.cpp
new file mode 100644
index 0000000..7b5773e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.fail.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// explicit tuple(const T&...);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+struct ExplicitCopy {
+  ExplicitCopy(int) {}
+  explicit ExplicitCopy(ExplicitCopy const&) {}
+};
+
+std::tuple<ExplicitCopy> const_explicit_copy() {
+    const ExplicitCopy e(42);
+    return {e};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+
+
+std::tuple<ExplicitCopy> non_const_explicit_copy() {
+    ExplicitCopy e(42);
+    return {e};
+    // expected-error@-1 {{chosen constructor is explicit in copy-initialization}}
+}
+
+std::tuple<ExplicitCopy> const_explicit_copy_no_brace() {
+    const ExplicitCopy e(42);
+    return e;
+    // expected-error@-1 {{no viable conversion}}
+}
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.pass.cpp
new file mode 100644
index 0000000..9609abb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types.pass.cpp
@@ -0,0 +1,142 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// explicit tuple(const T&...);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class ...>
+struct never {
+    enum { value = 0 };
+};
+
+struct NoValueCtor
+{
+    NoValueCtor() : id(++count) {}
+    NoValueCtor(NoValueCtor const & other) : id(other.id) { ++count; }
+
+    // The constexpr is required to make is_constructible instantiate this template.
+    // The explicit is needed to test-around a similar bug with is_convertible.
+    template <class T>
+    constexpr explicit NoValueCtor(T)
+    { static_assert(never<T>::value, "This should not be instantiated"); }
+
+    static int count;
+    int id;
+};
+
+int NoValueCtor::count = 0;
+
+
+struct NoValueCtorEmpty
+{
+    NoValueCtorEmpty() {}
+    NoValueCtorEmpty(NoValueCtorEmpty const &) {}
+
+    template <class T>
+    constexpr explicit NoValueCtorEmpty(T)
+    { static_assert(never<T>::value, "This should not be instantiated"); }
+};
+
+
+struct ImplicitCopy {
+  explicit ImplicitCopy(int) {}
+  ImplicitCopy(ImplicitCopy const&) {}
+};
+
+// Test that tuple(std::allocator_arg, Alloc, Types const&...) allows implicit
+// copy conversions in return value expressions.
+std::tuple<ImplicitCopy> testImplicitCopy1() {
+    ImplicitCopy i(42);
+    return {i};
+}
+
+std::tuple<ImplicitCopy> testImplicitCopy2() {
+    const ImplicitCopy i(42);
+    return {i};
+}
+
+std::tuple<ImplicitCopy> testImplicitCopy3() {
+    const ImplicitCopy i(42);
+    return i;
+}
+
+int main(int, char**)
+{
+    {
+        // check that the literal '0' can implicitly initialize a stored pointer.
+        std::tuple<int*> t = 0;
+        assert(std::get<0>(t) == nullptr);
+    }
+    {
+        std::tuple<int> t(2);
+        assert(std::get<0>(t) == 2);
+    }
+#if TEST_STD_VER > 11
+    {
+        constexpr std::tuple<int> t(2);
+        static_assert(std::get<0>(t) == 2, "");
+    }
+    {
+        constexpr std::tuple<int> t;
+        static_assert(std::get<0>(t) == 0, "");
+    }
+#endif
+    {
+        std::tuple<int, char*> t(2, 0);
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == nullptr);
+    }
+#if TEST_STD_VER > 11
+    {
+        constexpr std::tuple<int, char*> t(2, nullptr);
+        static_assert(std::get<0>(t) == 2, "");
+        static_assert(std::get<1>(t) == nullptr, "");
+    }
+#endif
+    {
+        std::tuple<int, char*> t(2, nullptr);
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == nullptr);
+    }
+    {
+        std::tuple<int, char*, std::string> t(2, nullptr, "text");
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == nullptr);
+        assert(std::get<2>(t) == "text");
+    }
+    // __tuple_leaf<T> uses is_constructible<T, U> to disable its explicit converting
+    // constructor overload __tuple_leaf(U &&). Evaluating is_constructible can cause a compile error.
+    // This overload is evaluated when __tuple_leafs copy or move ctor is called.
+    // This checks that is_constructible is not evaluated when U == __tuple_leaf.
+    {
+        std::tuple<int, NoValueCtor, int, int> t(1, NoValueCtor(), 2, 3);
+        assert(std::get<0>(t) == 1);
+        assert(std::get<1>(t).id == 1);
+        assert(std::get<2>(t) == 2);
+        assert(std::get<3>(t) == 3);
+    }
+    {
+        std::tuple<int, NoValueCtorEmpty, int, int> t(1, NoValueCtorEmpty(), 2, 3);
+        assert(std::get<0>(t) == 1);
+        assert(std::get<2>(t) == 2);
+        assert(std::get<3>(t) == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types2.compile.fail.cpp
new file mode 100644
index 0000000..2ff4d5d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_Types2.compile.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// explicit tuple(const T&...);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+        std::tuple<int, char*, std::string, double&> t(2, nullptr, "text");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_move_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_move_pair.pass.cpp
new file mode 100644
index 0000000..b85275c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_move_pair.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template <class U1, class U2>
+// constexpr explicit(see below) tuple<Types...>::tuple(const pair<U1, U2>&& u);
+
+// Constraints:
+// - sizeof...(Types) is 2 and
+// - is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// - is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "copy_move_types.h"
+
+// test constraints
+// sizeof...(Types) == 2
+static_assert(std::is_constructible_v<std::tuple<ConstMove, int>, const std::pair<ConstMove, int>&&>);
+
+static_assert(!std::is_constructible_v<std::tuple<ConstMove>, const std::pair<ConstMove, int>&&>);
+
+static_assert(!std::is_constructible_v<std::tuple<ConstMove, int, int>, const std::pair<ConstMove, int>&&>);
+
+// test constraints
+// is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+static_assert(std::is_constructible_v<std::tuple<int, int>, const std::pair<int, int>&&>);
+
+static_assert(!std::is_constructible_v<std::tuple<NoConstructorFromInt, int>, const std::pair<int, int>&&>);
+
+static_assert(!std::is_constructible_v<std::tuple<int, NoConstructorFromInt>, const std::pair<int, int>&&>);
+
+static_assert(
+    !std::is_constructible_v< std::tuple<NoConstructorFromInt, NoConstructorFromInt>, const std::pair<int, int>&&>);
+
+// test: The expression inside explicit is equivalent to:
+// !is_convertible_v<decltype(get<0>(FWD(u))), T0> ||
+// !is_convertible_v<decltype(get<1>(FWD(u))), T1>
+static_assert(std::is_convertible_v<const std::pair<ConstMove, ConstMove>&&,
+                                    std::tuple<ConvertibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>>);
+
+static_assert(!std::is_convertible_v<const std::pair<ConstMove, ConstMove>&&,
+                                     std::tuple<ExplicitConstructibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>>);
+
+static_assert(!std::is_convertible_v<const std::pair<ConstMove, ConstMove>&&,
+                                     std::tuple<ConvertibleFrom<ConstMove>, ExplicitConstructibleFrom<ConstMove>>>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  {
+    const std::pair<ConstMove, int> p{1, 2};
+    std::tuple<ConvertibleFrom<ConstMove>, ConvertibleFrom<int>> t = std::move(p);
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+  }
+
+  // test explicit conversions.
+  {
+    const std::pair<ConstMove, int> p{1, 2};
+    std::tuple<ExplicitConstructibleFrom<ConstMove>, ExplicitConstructibleFrom<int>> t{std::move(p)};
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+  }
+
+  // non const overload should be called
+  {
+    const std::pair<TracedCopyMove, TracedCopyMove> p;
+    std::tuple<ConvertibleFrom<TracedCopyMove>, TracedCopyMove> t = std::move(p);
+    assert(constMoveCtrCalled(std::get<0>(t).v));
+    assert(constMoveCtrCalled(std::get<1>(t)));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_pair.pass.cpp
new file mode 100644
index 0000000..0bb93a6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/const_pair.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class U1, class U2> tuple(const pair<U1, U2>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<long, char> T0;
+        typedef std::tuple<long long, short> T1;
+        T0 t0(2, 'a');
+        T1 t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == short('a'));
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<long, char> P0;
+        typedef std::tuple<long long, short> T1;
+        constexpr P0 p0(2, 'a');
+        constexpr T1 t1 = p0;
+        static_assert(std::get<0>(t1) == std::get<0>(p0), "");
+        static_assert(std::get<1>(t1) == std::get<1>(p0), "");
+        static_assert(std::get<0>(t1) == 2, "");
+        static_assert(std::get<1>(t1) == short('a'), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_const_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_const_move.pass.cpp
new file mode 100644
index 0000000..8f778f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_const_move.pass.cpp
@@ -0,0 +1,138 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template <class... UTypes>
+//   constexpr explicit(see below) tuple<Types>::tuple(const
+//   tuple<UTypes...>&&);
+//
+// Constraints:
+//  sizeof...(Types) equals sizeof...(UTypes) &&
+//  (is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...) is true &&
+//  (
+//    sizeof...(Types) is not 1 ||
+//    (
+//      !is_convertible_v<decltype(u), T> &&
+//      !is_constructible_v<T, decltype(u)> &&
+//      !is_same_v<T, U>
+//    )
+//  )
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+
+#include "copy_move_types.h"
+#include "test_macros.h"
+
+// test: The expression inside explicit is equivalent to:
+// !(is_convertible_v<decltype(get<I>(FWD(u))), Types> && ...)
+static_assert(std::is_convertible_v<const std::tuple<ConstMove>&&, std::tuple<ConvertibleFrom<ConstMove>>>);
+
+static_assert(std::is_convertible_v<const std::tuple<ConstMove, ConstMove>&&,
+                                    std::tuple<ConvertibleFrom<ConstMove>, ConvertibleFrom<ConstMove>>>);
+
+static_assert(
+    !std::is_convertible_v<const std::tuple<MutableCopy>&&, std::tuple<ExplicitConstructibleFrom<ConstMove>>>);
+
+static_assert(!std::is_convertible_v<const std::tuple<ConstMove, ConstMove>&&,
+                                     std::tuple<ConvertibleFrom<ConstMove>, ExplicitConstructibleFrom<ConstMove>>>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  // sizeof...(Types) == 1
+  {
+    const std::tuple<ConstMove> t1{1};
+    std::tuple<ConvertibleFrom<ConstMove>> t2 = std::move(t1);
+    assert(std::get<0>(t2).v.val == 1);
+  }
+
+  // test implicit conversions.
+  // sizeof...(Types) > 1
+  {
+    const std::tuple<ConstMove, int> t1{1, 2};
+    std::tuple<ConvertibleFrom<ConstMove>, int> t2 = std::move(t1);
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) == 1
+  {
+    const std::tuple<ConstMove> t1{1};
+    std::tuple<ExplicitConstructibleFrom<ConstMove>> t2{std::move(t1)};
+    assert(std::get<0>(t2).v.val == 1);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) > 1
+  {
+    const std::tuple<ConstMove, int> t1{1, 2};
+    std::tuple<ExplicitConstructibleFrom<ConstMove>, int> t2{std::move(t1)};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // test constraints
+
+  // sizeof...(Types) != sizeof...(UTypes)
+  static_assert(!std::is_constructible_v<std::tuple<int, int>, const std::tuple<int>&&>);
+  static_assert(!std::is_constructible_v<std::tuple<int, int, int>, const std::tuple<int, int>&&>);
+
+  // !(is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...)
+  static_assert(!std::is_constructible_v<std::tuple<int, NoConstructorFromInt>, const std::tuple<int, int>&&>);
+
+  // sizeof...(Types) == 1 && other branch of "||" satisfied
+  {
+    const std::tuple<TracedCopyMove> t1{};
+    std::tuple<ConvertibleFrom<TracedCopyMove>> t2{std::move(t1)};
+    assert(constMoveCtrCalled(std::get<0>(t2).v));
+  }
+
+  // sizeof...(Types) == 1 && is_same_v<T, U>
+  {
+    const std::tuple<TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove> t2{t1};
+    assert(!constMoveCtrCalled(std::get<0>(t2)));
+  }
+
+  // sizeof...(Types) != 1
+  {
+    const std::tuple<TracedCopyMove, TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove, TracedCopyMove> t2{std::move(t1)};
+    assert(constMoveCtrCalled(std::get<0>(t2)));
+  }
+
+  // These two test points cause gcc to ICE
+#if !defined(TEST_COMPILER_GCC)
+  // sizeof...(Types) == 1 && is_convertible_v<decltype(u), T>
+  {
+    const std::tuple<CvtFromConstTupleRefRef> t1{};
+    std::tuple<ConvertibleFrom<CvtFromConstTupleRefRef>> t2{std::move(t1)};
+    assert(!constMoveCtrCalled(std::get<0>(t2).v));
+  }
+
+  // sizeof...(Types) == 1 && is_constructible_v<decltype(u), T>
+  {
+    const std::tuple<ExplicitCtrFromConstTupleRefRef> t1{};
+    std::tuple<ConvertibleFrom<ExplicitCtrFromConstTupleRefRef>> t2{std::move(t1)};
+    assert(!constMoveCtrCalled(std::get<0>(t2).v));
+  }
+#endif
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_copy.pass.cpp
new file mode 100644
index 0000000..b76c195
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_copy.pass.cpp
@@ -0,0 +1,157 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes> tuple(const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Explicit {
+  int value;
+  explicit Explicit(int x) : value(x) {}
+};
+
+struct Implicit {
+  int value;
+  Implicit(int x) : value(x) {}
+};
+
+struct ExplicitTwo {
+    ExplicitTwo() {}
+    ExplicitTwo(ExplicitTwo const&) {}
+    ExplicitTwo(ExplicitTwo &&) {}
+
+    template <class T, class = typename std::enable_if<!std::is_same<T, ExplicitTwo>::value>::type>
+    explicit ExplicitTwo(T) {}
+};
+
+struct B
+{
+    int id_;
+
+    explicit B(int i) : id_(i) {}
+};
+
+struct D
+    : B
+{
+    explicit D(int i) : B(i) {}
+};
+
+#if TEST_STD_VER > 11
+
+struct A
+{
+    int id_;
+
+    constexpr A(int i) : id_(i) {}
+    friend constexpr bool operator==(const A& x, const A& y) {return x.id_ == y.id_;}
+};
+
+struct C
+{
+    int id_;
+
+    constexpr explicit C(int i) : id_(i) {}
+    friend constexpr bool operator==(const C& x, const C& y) {return x.id_ == y.id_;}
+};
+
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<long> T0;
+        typedef std::tuple<long long> T1;
+        T0 t0(2);
+        T1 t1 = t0;
+        assert(std::get<0>(t1) == 2);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::tuple<int> T0;
+        typedef std::tuple<A> T1;
+        constexpr T0 t0(2);
+        constexpr T1 t1 = t0;
+        static_assert(std::get<0>(t1) == 2, "");
+    }
+    {
+        typedef std::tuple<int> T0;
+        typedef std::tuple<C> T1;
+        constexpr T0 t0(2);
+        constexpr T1 t1{t0};
+        static_assert(std::get<0>(t1) == C(2), "");
+    }
+#endif
+    {
+        typedef std::tuple<long, char> T0;
+        typedef std::tuple<long long, int> T1;
+        T0 t0(2, 'a');
+        T1 t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+    }
+    {
+        typedef std::tuple<long, char, D> T0;
+        typedef std::tuple<long long, int, B> T1;
+        T0 t0(2, 'a', D(3));
+        T1 t1 = t0;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 3);
+    }
+    {
+        D d(3);
+        typedef std::tuple<long, char, D&> T0;
+        typedef std::tuple<long long, int, B&> T1;
+        T0 t0(2, 'a', d);
+        T1 t1 = t0;
+        d.id_ = 2;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 2);
+    }
+    {
+        typedef std::tuple<long, char, int> T0;
+        typedef std::tuple<long long, int, B> T1;
+        T0 t0(2, 'a', 3);
+        T1 t1(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 3);
+    }
+    {
+        const std::tuple<int> t1(42);
+        std::tuple<Explicit> t2(t1);
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        const std::tuple<int> t1(42);
+        std::tuple<Implicit> t2 = t1;
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        static_assert(std::is_convertible<ExplicitTwo&&, ExplicitTwo>::value, "");
+        static_assert(std::is_convertible<std::tuple<ExplicitTwo&&>&&, const std::tuple<ExplicitTwo>&>::value, "");
+
+        ExplicitTwo e;
+        std::tuple<ExplicitTwo> t = std::tuple<ExplicitTwo&&>(std::move(e));
+        ((void)t);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_move.pass.cpp
new file mode 100644
index 0000000..93794c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_move.pass.cpp
@@ -0,0 +1,121 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... UTypes> tuple(tuple<UTypes...>&& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Explicit {
+  int value;
+  explicit Explicit(int x) : value(x) {}
+};
+
+struct Implicit {
+  int value;
+  Implicit(int x) : value(x) {}
+};
+
+struct B
+{
+    int id_;
+
+    explicit B(int i) : id_(i) {}
+
+    virtual ~B() {}
+};
+
+struct D
+    : B
+{
+    explicit D(int i) : B(i) {}
+};
+
+struct BonkersBananas {
+  template <class T>
+  operator T() &&;
+  template <class T, class = void>
+  explicit operator T() && = delete;
+};
+
+void test_bonkers_bananas_conversion() {
+  using ReturnType = std::tuple<int, int>;
+  static_assert(std::is_convertible<BonkersBananas, ReturnType>(), "");
+  static_assert(!std::is_constructible<ReturnType, BonkersBananas>(), "");
+
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<long> T0;
+        typedef std::tuple<long long> T1;
+        T0 t0(2);
+        T1 t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+    }
+    {
+        typedef std::tuple<long, char> T0;
+        typedef std::tuple<long long, int> T1;
+        T0 t0(2, 'a');
+        T1 t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+    }
+    {
+        typedef std::tuple<long, char, D> T0;
+        typedef std::tuple<long long, int, B> T1;
+        T0 t0(2, 'a', D(3));
+        T1 t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 3);
+    }
+    {
+        D d(3);
+        typedef std::tuple<long, char, D&> T0;
+        typedef std::tuple<long long, int, B&> T1;
+        T0 t0(2, 'a', d);
+        T1 t1 = std::move(t0);
+        d.id_ = 2;
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1).id_ == 2);
+    }
+    {
+        typedef std::tuple<long, char, std::unique_ptr<D>> T0;
+        typedef std::tuple<long long, int, std::unique_ptr<B>> T1;
+        T0 t0(2, 'a', std::unique_ptr<D>(new D(3)));
+        T1 t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1) == int('a'));
+        assert(std::get<2>(t1)->id_ == 3);
+    }
+    {
+        std::tuple<int> t1(42);
+        std::tuple<Explicit> t2(std::move(t1));
+        assert(std::get<0>(t2).value == 42);
+    }
+    {
+        std::tuple<int> t1(42);
+        std::tuple<Implicit> t2 = std::move(t1);
+        assert(std::get<0>(t2).value == 42);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_non_const_copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_non_const_copy.pass.cpp
new file mode 100644
index 0000000..6d3d15b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_non_const_copy.pass.cpp
@@ -0,0 +1,136 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template <class... UTypes>
+//   constexpr explicit(see below) tuple<Types>::tuple(tuple<UTypes...>&);
+//
+// Constraints:
+//  sizeof...(Types) equals sizeof...(UTypes) &&
+//  (is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...) is true &&
+//  (
+//    sizeof...(Types) is not 1 ||
+//    (
+//      !is_convertible_v<decltype(u), T> &&
+//      !is_constructible_v<T, decltype(u)> &&
+//      !is_same_v<T, U>
+//    )
+//  )
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+
+#include "copy_move_types.h"
+#include "test_macros.h"
+
+// test: The expression inside explicit is equivalent to:
+// !(is_convertible_v<decltype(get<I>(FWD(u))), Types> && ...)
+static_assert(std::is_convertible_v<std::tuple<MutableCopy>&, std::tuple<ConvertibleFrom<MutableCopy>>>);
+
+static_assert(std::is_convertible_v<std::tuple<MutableCopy, MutableCopy>&,
+                                    std::tuple<ConvertibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>>);
+
+static_assert(!std::is_convertible_v<std::tuple<MutableCopy>&, std::tuple<ExplicitConstructibleFrom<MutableCopy>>>);
+
+static_assert(!std::is_convertible_v<std::tuple<MutableCopy, MutableCopy>&,
+                                     std::tuple<ConvertibleFrom<MutableCopy>, ExplicitConstructibleFrom<MutableCopy>>>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  // sizeof...(Types) == 1
+  {
+    std::tuple<MutableCopy> t1{1};
+    std::tuple<ConvertibleFrom<MutableCopy>> t2 = t1;
+    assert(std::get<0>(t2).v.val == 1);
+  }
+
+  // test implicit conversions.
+  // sizeof...(Types) > 1
+  {
+    std::tuple<MutableCopy, int> t1{1, 2};
+    std::tuple<ConvertibleFrom<MutableCopy>, int> t2 = t1;
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) == 1
+  {
+    std::tuple<MutableCopy> t1{1};
+    std::tuple<ExplicitConstructibleFrom<MutableCopy>> t2{t1};
+    assert(std::get<0>(t2).v.val == 1);
+  }
+
+  // test explicit conversions.
+  // sizeof...(Types) > 1
+  {
+    std::tuple<MutableCopy, int> t1{1, 2};
+    std::tuple<ExplicitConstructibleFrom<MutableCopy>, int> t2{t1};
+    assert(std::get<0>(t2).v.val == 1);
+    assert(std::get<1>(t2) == 2);
+  }
+
+  // test constraints
+
+  // sizeof...(Types) != sizeof...(UTypes)
+  static_assert(!std::is_constructible_v<std::tuple<int, int>, std::tuple<int>&>);
+  static_assert(!std::is_constructible_v<std::tuple<int>, std::tuple<int, int>&>);
+  static_assert(!std::is_constructible_v<std::tuple<int, int, int>, std::tuple<int, int>&>);
+
+  // !(is_constructible_v<Types, decltype(get<I>(FWD(u)))> && ...)
+  static_assert(!std::is_constructible_v<std::tuple<int, NoConstructorFromInt>, std::tuple<int, int>&>);
+
+  // sizeof...(Types) == 1 && other branch of "||" satisfied
+  {
+    std::tuple<TracedCopyMove> t1{};
+    std::tuple<ConvertibleFrom<TracedCopyMove>> t2{t1};
+    assert(nonConstCopyCtrCalled(std::get<0>(t2).v));
+  }
+
+  // sizeof...(Types) == 1 && is_same_v<T, U>
+  {
+    std::tuple<TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove> t2{t1};
+    assert(!nonConstCopyCtrCalled(std::get<0>(t2)));
+  }
+
+  // sizeof...(Types) != 1
+  {
+    std::tuple<TracedCopyMove, TracedCopyMove> t1{};
+    std::tuple<TracedCopyMove, TracedCopyMove> t2{t1};
+    assert(nonConstCopyCtrCalled(std::get<0>(t2)));
+  }
+
+  // These two test points cause gcc to ICE
+#if !defined(TEST_COMPILER_GCC)
+  // sizeof...(Types) == 1 && is_convertible_v<decltype(u), T>
+  {
+    std::tuple<CvtFromTupleRef> t1{};
+    std::tuple<ConvertibleFrom<CvtFromTupleRef>> t2{t1};
+    assert(!nonConstCopyCtrCalled(std::get<0>(t2).v));
+  }
+
+  // sizeof...(Types) == 1 && is_constructible_v<decltype(u), T>
+  {
+    std::tuple<ExplicitCtrFromTupleRef> t1{};
+    std::tuple<ConvertibleFrom<ExplicitCtrFromTupleRef>> t2{t1};
+    assert(!nonConstCopyCtrCalled(std::get<0>(t2).v));
+  }
+#endif
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/copy.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/copy.compile.fail.cpp
new file mode 100644
index 0000000..20e166c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/copy.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// tuple(const tuple& u) = default;
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(2));
+        T t = t0;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/copy.pass.cpp
new file mode 100644
index 0000000..ac39a39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/copy.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// tuple(const tuple& u) = default;
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Empty {};
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t = t0;
+        ((void)t); // Prevent unused warning
+    }
+    {
+        typedef std::tuple<int> T;
+        T t0(2);
+        T t = t0;
+        assert(std::get<0>(t) == 2);
+    }
+    {
+        typedef std::tuple<int, char> T;
+        T t0(2, 'a');
+        T t = t0;
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == 'a');
+    }
+    {
+        typedef std::tuple<int, char, std::string> T;
+        const T t0(2, 'a', "some text");
+        T t = t0;
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == 'a');
+        assert(std::get<2>(t) == "some text");
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::tuple<int> T;
+        constexpr T t0(2);
+        constexpr T t = t0;
+        static_assert(std::get<0>(t) == 2, "");
+    }
+    {
+        typedef std::tuple<Empty> T;
+        constexpr T t0;
+        constexpr T t = t0;
+        constexpr Empty e = std::get<0>(t);
+        ((void)e); // Prevent unused warning
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/deduct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/deduct.pass.cpp
new file mode 100644
index 0000000..c3e684b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/deduct.pass.cpp
@@ -0,0 +1,196 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// Test that the constructors offered by std::tuple are formulated
+// so they're compatible with implicit deduction guides, or if that's not
+// possible that they provide explicit guides to make it work.
+
+#include <tuple>
+#include <cassert>
+#include <functional>
+#include <memory>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+
+// Overloads
+//  using A = Allocator
+//  using AT = std::allocator_arg_t
+// ---------------
+// (1)  tuple(const Types&...) -> tuple<Types...>
+// (2)  tuple(pair<T1, T2>) -> tuple<T1, T2>;
+// (3)  explicit tuple(const Types&...) -> tuple<Types...>
+// (4)  tuple(AT, A const&, Types const&...) -> tuple<Types...>
+// (5)  explicit tuple(AT, A const&, Types const&...) -> tuple<Types...>
+// (6)  tuple(AT, A, pair<T1, T2>) -> tuple<T1, T2>
+// (7)  tuple(tuple const& t) -> decltype(t)
+// (8)  tuple(tuple&& t) -> decltype(t)
+// (9)  tuple(AT, A const&, tuple const& t) -> decltype(t)
+// (10) tuple(AT, A const&, tuple&& t) -> decltype(t)
+void test_primary_template()
+{
+  const std::allocator<int> A;
+  const auto AT = std::allocator_arg;
+  { // Testing (1)
+    int x = 101;
+    std::tuple t1(42);
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<int>);
+    std::tuple t2(x, 0.0, nullptr);
+    ASSERT_SAME_TYPE(decltype(t2), std::tuple<int, double, decltype(nullptr)>);
+  }
+  { // Testing (2)
+    std::pair<int, char> p1(1, 'c');
+    std::tuple t1(p1);
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<int, char>);
+
+    std::pair<int, std::tuple<char, long, void*>> p2(1, std::tuple<char, long, void*>('c', 3l, nullptr));
+    std::tuple t2(p2);
+    ASSERT_SAME_TYPE(decltype(t2), std::tuple<int, std::tuple<char, long, void*>>);
+
+    int i = 3;
+    std::pair<std::reference_wrapper<int>, char> p3(std::ref(i), 'c');
+    std::tuple t3(p3);
+    ASSERT_SAME_TYPE(decltype(t3), std::tuple<std::reference_wrapper<int>, char>);
+
+    std::pair<int&, char> p4(i, 'c');
+    std::tuple t4(p4);
+    ASSERT_SAME_TYPE(decltype(t4), std::tuple<int&, char>);
+
+    std::tuple t5(std::pair<int, char>(1, 'c'));
+    ASSERT_SAME_TYPE(decltype(t5), std::tuple<int, char>);
+  }
+  { // Testing (3)
+    using T = ExplicitTestTypes::TestType;
+    static_assert(!std::is_convertible<T const&, T>::value, "");
+
+    std::tuple t1(T{});
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<T>);
+
+    const T v{};
+    std::tuple t2(T{}, 101l, v);
+    ASSERT_SAME_TYPE(decltype(t2), std::tuple<T, long, T>);
+  }
+  { // Testing (4)
+    int x = 101;
+    std::tuple t1(AT, A, 42);
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<int>);
+
+    std::tuple t2(AT, A, 42, 0.0, x);
+    ASSERT_SAME_TYPE(decltype(t2), std::tuple<int, double, int>);
+  }
+  { // Testing (5)
+    using T = ExplicitTestTypes::TestType;
+    static_assert(!std::is_convertible<T const&, T>::value, "");
+
+    std::tuple t1(AT, A, T{});
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<T>);
+
+    const T v{};
+    std::tuple t2(AT, A, T{}, 101l, v);
+    ASSERT_SAME_TYPE(decltype(t2), std::tuple<T, long, T>);
+  }
+  { // Testing (6)
+    std::pair<int, char> p1(1, 'c');
+    std::tuple t1(AT, A, p1);
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<int, char>);
+
+    std::pair<int, std::tuple<char, long, void*>> p2(1, std::tuple<char, long, void*>('c', 3l, nullptr));
+    std::tuple t2(AT, A, p2);
+    ASSERT_SAME_TYPE(decltype(t2), std::tuple<int, std::tuple<char, long, void*>>);
+
+    int i = 3;
+    std::pair<std::reference_wrapper<int>, char> p3(std::ref(i), 'c');
+    std::tuple t3(AT, A, p3);
+    ASSERT_SAME_TYPE(decltype(t3), std::tuple<std::reference_wrapper<int>, char>);
+
+    std::pair<int&, char> p4(i, 'c');
+    std::tuple t4(AT, A, p4);
+    ASSERT_SAME_TYPE(decltype(t4), std::tuple<int&, char>);
+
+    std::tuple t5(AT, A, std::pair<int, char>(1, 'c'));
+    ASSERT_SAME_TYPE(decltype(t5), std::tuple<int, char>);
+  }
+  { // Testing (7)
+    using Tup = std::tuple<int, decltype(nullptr)>;
+    const Tup t(42, nullptr);
+
+    std::tuple t1(t);
+    ASSERT_SAME_TYPE(decltype(t1), Tup);
+  }
+  { // Testing (8)
+    using Tup = std::tuple<void*, unsigned, char>;
+    std::tuple t1(Tup(nullptr, 42, 'a'));
+    ASSERT_SAME_TYPE(decltype(t1), Tup);
+  }
+  { // Testing (9)
+    using Tup = std::tuple<int, decltype(nullptr)>;
+    const Tup t(42, nullptr);
+
+    std::tuple t1(AT, A, t);
+    ASSERT_SAME_TYPE(decltype(t1), Tup);
+  }
+  { // Testing (10)
+    using Tup = std::tuple<void*, unsigned, char>;
+    std::tuple t1(AT, A, Tup(nullptr, 42, 'a'));
+    ASSERT_SAME_TYPE(decltype(t1), Tup);
+  }
+}
+
+// Overloads
+//  using A = Allocator
+//  using AT = std::allocator_arg_t
+// ---------------
+// (1)  tuple() -> tuple<>
+// (2)  tuple(AT, A const&) -> tuple<>
+// (3)  tuple(tuple const&) -> tuple<>
+// (4)  tuple(tuple&&) -> tuple<>
+// (5)  tuple(AT, A const&, tuple const&) -> tuple<>
+// (6)  tuple(AT, A const&, tuple&&) -> tuple<>
+void test_empty_specialization()
+{
+  std::allocator<int> A;
+  const auto AT = std::allocator_arg;
+  { // Testing (1)
+    std::tuple t1{};
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<>);
+  }
+  { // Testing (2)
+    std::tuple t1{AT, A};
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<>);
+  }
+  { // Testing (3)
+    const std::tuple<> t{};
+    std::tuple t1(t);
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<>);
+  }
+  { // Testing (4)
+    std::tuple t1(std::tuple<>{});
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<>);
+  }
+  { // Testing (5)
+    const std::tuple<> t{};
+    std::tuple t1(AT, A, t);
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<>);
+  }
+  { // Testing (6)
+    std::tuple t1(AT, A, std::tuple<>{});
+    ASSERT_SAME_TYPE(decltype(t1), std::tuple<>);
+  }
+}
+
+int main(int, char**) {
+  test_primary_template();
+  test_empty_specialization();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.fail.cpp
new file mode 100644
index 0000000..ed49c73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.fail.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// explicit(see-below) constexpr tuple();
+
+#include <tuple>
+
+
+struct Implicit {
+    Implicit() = default;
+};
+
+struct Explicit {
+    explicit Explicit() = default;
+};
+
+std::tuple<> test1() { return {}; }
+
+std::tuple<Implicit> test2() { return {}; }
+std::tuple<Explicit> test3() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+std::tuple<Implicit, Implicit> test4() { return {}; }
+std::tuple<Explicit, Implicit> test5() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Implicit, Explicit> test6() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Explicit, Explicit> test7() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+std::tuple<Implicit, Implicit, Implicit> test8() { return {}; }
+std::tuple<Implicit, Implicit, Explicit> test9() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Implicit, Explicit, Implicit> test10() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Implicit, Explicit, Explicit> test11() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Explicit, Implicit, Implicit> test12() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Explicit, Implicit, Explicit> test13() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Explicit, Explicit, Implicit> test14() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::tuple<Explicit, Explicit, Explicit> test15() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.lazy.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.lazy.verify.cpp
new file mode 100644
index 0000000..e3ad94d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.lazy.verify.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test makes sure that we don't evaluate `is_default_constructible<T>`
+// too early in std::tuple's default constructor.
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+
+#include "test_macros.h"
+
+struct Outer {
+    template <class T>
+    struct Inner {
+        bool foo = false;
+    };
+    std::tuple<Inner<int>> tup;
+};
+
+Outer x; // expected-no-diagnostics
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp
new file mode 100644
index 0000000..64918d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/default.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// explicit(see-below) constexpr tuple();
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "DefaultOnly.h"
+
+struct NoDefault {
+    NoDefault() = delete;
+    explicit NoDefault(int) { }
+};
+
+struct NoExceptDefault {
+    NoExceptDefault() noexcept = default;
+};
+
+struct ThrowingDefault {
+    ThrowingDefault() { }
+};
+
+struct IllFormedDefault {
+    IllFormedDefault(int x) : value(x) {}
+    template <bool Pred = false>
+    constexpr IllFormedDefault() {
+        static_assert(Pred,
+            "The default constructor should not be instantiated");
+    }
+    int value;
+};
+
+int main(int, char**)
+{
+    {
+        std::tuple<> t;
+        (void)t;
+    }
+    {
+        std::tuple<int> t;
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        std::tuple<int, char*> t;
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == nullptr);
+    }
+    {
+        std::tuple<int, char*, std::string> t;
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == nullptr);
+        assert(std::get<2>(t) == "");
+    }
+    {
+        std::tuple<int, char*, std::string, DefaultOnly> t;
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == nullptr);
+        assert(std::get<2>(t) == "");
+        assert(std::get<3>(t) == DefaultOnly());
+    }
+    {
+        // See bug #21157.
+        static_assert(!std::is_default_constructible<std::tuple<NoDefault>>(), "");
+        static_assert(!std::is_default_constructible<std::tuple<DefaultOnly, NoDefault>>(), "");
+        static_assert(!std::is_default_constructible<std::tuple<NoDefault, DefaultOnly, NoDefault>>(), "");
+    }
+    {
+        static_assert(noexcept(std::tuple<NoExceptDefault>()), "");
+        static_assert(noexcept(std::tuple<NoExceptDefault, NoExceptDefault>()), "");
+
+        static_assert(!noexcept(std::tuple<ThrowingDefault, NoExceptDefault>()), "");
+        static_assert(!noexcept(std::tuple<NoExceptDefault, ThrowingDefault>()), "");
+        static_assert(!noexcept(std::tuple<ThrowingDefault, ThrowingDefault>()), "");
+    }
+    {
+        constexpr std::tuple<> t;
+        (void)t;
+    }
+    {
+        constexpr std::tuple<int> t;
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        constexpr std::tuple<int, char*> t;
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == nullptr);
+    }
+    {
+    // Check that the SFINAE on the default constructor is not evaluated when
+    // it isn't needed. If the default constructor is evaluated then this test
+    // should fail to compile.
+        IllFormedDefault v(0);
+        std::tuple<IllFormedDefault> t(v);
+    }
+    {
+        struct Base { };
+        struct Derived : Base { protected: Derived() = default; };
+        static_assert(!std::is_default_constructible<std::tuple<Derived, int> >::value, "");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/dtor.pass.cpp
new file mode 100644
index 0000000..caebaca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/dtor.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// ~tuple();
+
+// C++17 added:
+//   The destructor of tuple shall be a trivial destructor
+//     if (is_trivially_destructible_v<Types> && ...) is true.
+
+#include <tuple>
+#include <string>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct TrackDtor {
+   int* count_;
+   constexpr explicit TrackDtor(int* count) : count_(count) {}
+   TEST_CONSTEXPR_CXX14 TrackDtor(TrackDtor&& that) : count_(that.count_) { that.count_ = nullptr; }
+   TEST_CONSTEXPR_CXX20 ~TrackDtor() { if(count_) ++*count_; }
+};
+static_assert(!std::is_trivially_destructible<TrackDtor>::value, "");
+
+static_assert(std::is_trivially_destructible<std::tuple<>>::value, "");
+static_assert(std::is_trivially_destructible<std::tuple<void*>>::value, "");
+static_assert(std::is_trivially_destructible<std::tuple<int, float>>::value, "");
+static_assert(!std::is_trivially_destructible<std::tuple<std::string>>::value, "");
+static_assert(!std::is_trivially_destructible<std::tuple<int, std::string>>::value, "");
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  int count = 0;
+  {
+    std::tuple<TrackDtor> tuple{TrackDtor(&count)};
+    assert(count == 0);
+  }
+  assert(count == 1);
+
+  return true;
+}
+
+int main(int, char**)
+{
+  test();
+#if TEST_STD_VER > 17
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/empty_tuple_trivial.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/empty_tuple_trivial.compile.pass.cpp
new file mode 100644
index 0000000..d1b296d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/empty_tuple_trivial.compile.pass.cpp
@@ -0,0 +1,14 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+
+static_assert(std::is_trivially_constructible<std::tuple<>>::value, "");
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp
new file mode 100644
index 0000000..d6c192d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp
@@ -0,0 +1,128 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// tuple(tuple&& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <cassert>
+#include <memory>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+struct ConstructsWithTupleLeaf
+{
+    ConstructsWithTupleLeaf() {}
+
+    ConstructsWithTupleLeaf(ConstructsWithTupleLeaf const &) { assert(false); }
+    ConstructsWithTupleLeaf(ConstructsWithTupleLeaf &&) {}
+
+    template <class T>
+    ConstructsWithTupleLeaf(T) {
+        static_assert(!std::is_same<T, T>::value,
+                      "Constructor instantiated for type other than int");
+    }
+};
+
+// move_only type which triggers the empty base optimization
+struct move_only_ebo {
+  move_only_ebo() = default;
+  move_only_ebo(move_only_ebo&&) = default;
+};
+
+// a move_only type which does not trigger the empty base optimization
+struct move_only_large final {
+  move_only_large() : value(42) {}
+  move_only_large(move_only_large&&) = default;
+  int value;
+};
+
+template <class Elem>
+void test_sfinae() {
+    using Tup = std::tuple<Elem>;
+    using Alloc = std::allocator<int>;
+    using Tag = std::allocator_arg_t;
+    // special members
+    {
+        static_assert(std::is_default_constructible<Tup>::value, "");
+        static_assert(std::is_move_constructible<Tup>::value, "");
+        static_assert(!std::is_copy_constructible<Tup>::value, "");
+        static_assert(!std::is_constructible<Tup, Tup&>::value, "");
+    }
+    // args constructors
+    {
+        static_assert(std::is_constructible<Tup, Elem&&>::value, "");
+        static_assert(!std::is_constructible<Tup, Elem const&>::value, "");
+        static_assert(!std::is_constructible<Tup, Elem&>::value, "");
+    }
+    // uses-allocator special member constructors
+    {
+        static_assert(std::is_constructible<Tup, Tag, Alloc>::value, "");
+        static_assert(std::is_constructible<Tup, Tag, Alloc, Tup&&>::value, "");
+        static_assert(!std::is_constructible<Tup, Tag, Alloc, Tup const&>::value, "");
+        static_assert(!std::is_constructible<Tup, Tag, Alloc, Tup &>::value, "");
+    }
+    // uses-allocator args constructors
+    {
+        static_assert(std::is_constructible<Tup, Tag, Alloc, Elem&&>::value, "");
+        static_assert(!std::is_constructible<Tup, Tag, Alloc, Elem const&>::value, "");
+        static_assert(!std::is_constructible<Tup, Tag, Alloc, Elem &>::value, "");
+    }
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t = std::move(t0);
+        ((void)t); // Prevent unused warning
+    }
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(0));
+        T t = std::move(t0);
+        assert(std::get<0>(t) == 0);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1));
+        T t = std::move(t0);
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
+        T t = std::move(t0);
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 1);
+        assert(std::get<2>(t) == 2);
+    }
+    // A bug in tuple caused __tuple_leaf to use its explicit converting constructor
+    //  as its move constructor. This tests that ConstructsWithTupleLeaf is not called
+    // (w/ __tuple_leaf)
+    {
+        typedef std::tuple<ConstructsWithTupleLeaf> d_t;
+        d_t d((ConstructsWithTupleLeaf()));
+        d_t d2(static_cast<d_t &&>(d));
+    }
+    {
+        test_sfinae<move_only_ebo>();
+        test_sfinae<move_only_large>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move_pair.pass.cpp
new file mode 100644
index 0000000..7428d01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move_pair.pass.cpp
@@ -0,0 +1,60 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class U1, class U2> tuple(pair<U1, U2>&& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct B
+{
+    int id_;
+
+    explicit B(int i) : id_(i) {}
+
+    virtual ~B() {}
+};
+
+struct D
+    : B
+{
+    explicit D(int i) : B(i) {}
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<long, std::unique_ptr<D>> T0;
+        typedef std::tuple<long long, std::unique_ptr<B>> T1;
+        T0 t0(2, std::unique_ptr<D>(new D(3)));
+        T1 t1 = std::move(t0);
+        assert(std::get<0>(t1) == 2);
+        assert(std::get<1>(t1)->id_ == 3);
+    }
+
+#if TEST_STD_VER > 11
+    {
+        using pair_t = std::pair<int, char>;
+        constexpr std::tuple<long, long> t(pair_t(0, 'a'));
+        static_assert(std::get<0>(t) == 0, "");
+        static_assert(std::get<1>(t) == 'a', "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/non_const_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/non_const_pair.pass.cpp
new file mode 100644
index 0000000..1c2c71d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/non_const_pair.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types>
+// template <class U1, class U2>
+// constexpr explicit(see below) tuple<Types...>::tuple(pair<U1, U2>& u);
+
+// Constraints:
+// - sizeof...(Types) is 2 and
+// - is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// - is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "copy_move_types.h"
+
+// test constraints
+// sizeof...(Types) == 2
+static_assert(std::is_constructible_v<std::tuple<MutableCopy, int>, std::pair<MutableCopy, int>&>);
+
+static_assert(!std::is_constructible_v<std::tuple<MutableCopy>, std::pair<MutableCopy, int>&>);
+
+static_assert(!std::is_constructible_v<std::tuple<MutableCopy, int, int>, std::pair<MutableCopy, int>&>);
+
+// test constraints
+// is_constructible_v<T0, decltype(get<0>(FWD(u)))> is true and
+// is_constructible_v<T1, decltype(get<1>(FWD(u)))> is true.
+static_assert(std::is_constructible_v<std::tuple<int, int>, std::pair<int, int>&>);
+
+static_assert(!std::is_constructible_v<std::tuple<NoConstructorFromInt, int>, std::pair<int, int>&>);
+
+static_assert(!std::is_constructible_v<std::tuple<int, NoConstructorFromInt>, std::pair<int, int>&>);
+
+static_assert(!std::is_constructible_v< std::tuple<NoConstructorFromInt, NoConstructorFromInt>, std::pair<int, int>&>);
+
+// test: The expression inside explicit is equivalent to:
+// !is_convertible_v<decltype(get<0>(FWD(u))), T0> ||
+// !is_convertible_v<decltype(get<1>(FWD(u))), T1>
+static_assert(std::is_convertible_v<std::pair<MutableCopy, MutableCopy>&,
+                                    std::tuple<ConvertibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>>);
+
+static_assert(!std::is_convertible_v<std::pair<MutableCopy, MutableCopy>&,
+                                     std::tuple<ExplicitConstructibleFrom<MutableCopy>, ConvertibleFrom<MutableCopy>>>);
+
+static_assert(!std::is_convertible_v<std::pair<MutableCopy, MutableCopy>&,
+                                     std::tuple<ConvertibleFrom<MutableCopy>, ExplicitConstructibleFrom<MutableCopy>>>);
+
+constexpr bool test() {
+  // test implicit conversions.
+  {
+    std::pair<MutableCopy, int> p{1, 2};
+    std::tuple<ConvertibleFrom<MutableCopy>, ConvertibleFrom<int>> t = p;
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+  }
+
+  // test explicit conversions.
+  {
+    std::pair<MutableCopy, int> p{1, 2};
+    std::tuple<ExplicitConstructibleFrom<MutableCopy>, ExplicitConstructibleFrom<int>> t{p};
+    assert(std::get<0>(t).v.val == 1);
+    assert(std::get<1>(t).v == 2);
+  }
+
+  // non const overload should be called
+  {
+    std::pair<TracedCopyMove, TracedCopyMove> p;
+    std::tuple<ConvertibleFrom<TracedCopyMove>, TracedCopyMove> t = p;
+    assert(nonConstCopyCtrCalled(std::get<0>(t).v));
+    assert(nonConstCopyCtrCalled(std::get<1>(t)));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/recursion_depth.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/recursion_depth.pass.cpp
new file mode 100644
index 0000000..339361a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/recursion_depth.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+// Make sure that we don't blow up the template instantiation recursion depth
+// for tuples of size <= 1024.
+
+#include <tuple>
+#include <cassert>
+#include <utility>
+
+template <size_t... I>
+constexpr void CreateTuple(std::index_sequence<I...>) {
+  std::tuple<decltype(I)...> tuple(I...);
+  assert(std::get<0>(tuple) == 0);
+  assert(std::get<sizeof...(I)-1>(tuple) == sizeof...(I)-1);
+}
+
+constexpr bool test() {
+  CreateTuple(std::make_index_sequence<1024>{});
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test(), "");
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/test_lazy_sfinae.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/test_lazy_sfinae.pass.cpp
new file mode 100644
index 0000000..93f8fbc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/test_lazy_sfinae.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// UNSUPPORTED: c++03
+
+// Test the following constructors:
+// (1) tuple(Types const&...)
+// (2) tuple(UTypes&&...)
+// Test that (1) short circuits before evaluating the copy constructor of the
+// second argument. Constructor (2) should be selected.
+
+#include <tuple>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonConstCopyable {
+  NonConstCopyable() = default;
+  explicit NonConstCopyable(int v) : value(v) {}
+  NonConstCopyable(NonConstCopyable&) = default;
+  NonConstCopyable(NonConstCopyable const&) = delete;
+  int value;
+};
+
+template <class T>
+struct BlowsUpOnConstCopy {
+  BlowsUpOnConstCopy() = default;
+  constexpr BlowsUpOnConstCopy(BlowsUpOnConstCopy const&) {
+      static_assert(!std::is_same<T, T>::value, "");
+  }
+  BlowsUpOnConstCopy(BlowsUpOnConstCopy&) = default;
+};
+
+int main(int, char**) {
+  NonConstCopyable v(42);
+  BlowsUpOnConstCopy<int> b;
+  std::tuple<NonConstCopyable, BlowsUpOnConstCopy<int>> t(v, b);
+  assert(std::get<0>(t).value == 42);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/forward_as_tuple.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/forward_as_tuple.pass.cpp
new file mode 100644
index 0000000..1b9bcba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/forward_as_tuple.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template<class... Types>
+//     tuple<Types&&...> forward_as_tuple(Types&&... t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class Tuple>
+void
+test0(const Tuple&)
+{
+    static_assert(std::tuple_size<Tuple>::value == 0, "");
+}
+
+template <class Tuple>
+void
+test1a(const Tuple& t)
+{
+    static_assert(std::tuple_size<Tuple>::value == 1, "");
+    static_assert(std::is_same<typename std::tuple_element<0, Tuple>::type, int&&>::value, "");
+    assert(std::get<0>(t) == 1);
+}
+
+template <class Tuple>
+void
+test1b(const Tuple& t)
+{
+    static_assert(std::tuple_size<Tuple>::value == 1, "");
+    static_assert(std::is_same<typename std::tuple_element<0, Tuple>::type, int&>::value, "");
+    assert(std::get<0>(t) == 2);
+}
+
+template <class Tuple>
+void
+test2a(const Tuple& t)
+{
+    static_assert(std::tuple_size<Tuple>::value == 2, "");
+    static_assert(std::is_same<typename std::tuple_element<0, Tuple>::type, double&>::value, "");
+    static_assert(std::is_same<typename std::tuple_element<1, Tuple>::type, char&>::value, "");
+    assert(std::get<0>(t) == 2.5);
+    assert(std::get<1>(t) == 'a');
+}
+
+#if TEST_STD_VER > 11
+template <class Tuple>
+constexpr int
+test3(const Tuple&)
+{
+    return std::tuple_size<Tuple>::value;
+}
+#endif
+
+int main(int, char**)
+{
+    {
+        test0(std::forward_as_tuple());
+    }
+    {
+        test1a(std::forward_as_tuple(1));
+    }
+    {
+        int i = 2;
+        test1b(std::forward_as_tuple(i));
+    }
+    {
+        double i = 2.5;
+        char c = 'a';
+        test2a(std::forward_as_tuple(i, c));
+#if TEST_STD_VER > 11
+        static_assert ( test3 (std::forward_as_tuple(i, c)) == 2, "" );
+#endif
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp
new file mode 100644
index 0000000..9a6526e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... Types>
+//   tuple<VTypes...> make_tuple(Types&&... t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    int i = 0;
+    float j = 0;
+    std::tuple<int, int&, float&> t =
+        std::make_tuple(1, std::ref(i), std::ref(j));
+    assert(std::get<0>(t) == 1);
+    assert(std::get<1>(t) == 0);
+    assert(std::get<2>(t) == 0);
+    i = 2;
+    j = 3.5;
+    assert(std::get<0>(t) == 1);
+    assert(std::get<1>(t) == 2);
+    assert(std::get<2>(t) == 3.5);
+    std::get<1>(t) = 0;
+    std::get<2>(t) = 0;
+    assert(i == 0);
+    assert(j == 0);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+#if TEST_STD_VER > 11
+    {
+        constexpr auto t1 = std::make_tuple(0, 1, 3.14);
+        constexpr int i1 = std::get<1>(t1);
+        constexpr double d1 = std::get<2>(t1);
+        static_assert (i1 == 1, "" );
+        static_assert (d1 == 3.14, "" );
+    }
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/tie.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/tie.pass.cpp
new file mode 100644
index 0000000..0c6e629
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/tie.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... Types>
+//   tuple<Types&...> tie(Types&... t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX14
+bool test_tie()
+{
+    {
+        int i = 42;
+        double f = 1.1;
+        using ExpectT = std::tuple<int&, decltype(std::ignore)&, double&>;
+        auto res = std::tie(i, std::ignore, f);
+        static_assert(std::is_same<ExpectT, decltype(res)>::value, "");
+        assert(&std::get<0>(res) == &i);
+        assert(&std::get<1>(res) == &std::ignore);
+        assert(&std::get<2>(res) == &f);
+
+#if TEST_STD_VER >= 20
+        res = std::make_tuple(101, nullptr, -1.0);
+        assert(i == 101);
+        assert(f == -1.0);
+#endif
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test_tie();
+#if TEST_STD_VER >= 14
+    static_assert(test_tie(), "");
+#endif
+
+    {
+        int i = 0;
+        std::string s;
+        std::tie(i, std::ignore, s) = std::make_tuple(42, 3.14, "C++");
+        assert(i == 42);
+        assert(s == "C++");
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/tuple_cat.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/tuple_cat.pass.cpp
new file mode 100644
index 0000000..00c9d27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.creation/tuple_cat.pass.cpp
@@ -0,0 +1,274 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Tuples> tuple<CTypes...> tuple_cat(Tuples&&... tpls);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <array>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+namespace NS {
+struct Namespaced {
+  int i;
+};
+template<typename ...Ts>
+void forward_as_tuple(Ts...) = delete;
+}
+
+int main(int, char**)
+{
+    {
+        std::tuple<> t = std::tuple_cat();
+        ((void)t); // Prevent unused warning
+    }
+    {
+        std::tuple<> t1;
+        std::tuple<> t2 = std::tuple_cat(t1);
+        ((void)t2); // Prevent unused warning
+    }
+    {
+        std::tuple<> t = std::tuple_cat(std::tuple<>());
+        ((void)t); // Prevent unused warning
+    }
+    {
+        std::tuple<> t = std::tuple_cat(std::array<int, 0>());
+        ((void)t); // Prevent unused warning
+    }
+    {
+        std::tuple<int> t1(1);
+        std::tuple<int> t = std::tuple_cat(t1);
+        assert(std::get<0>(t) == 1);
+    }
+
+#if TEST_STD_VER > 11
+    {
+        constexpr std::tuple<> t = std::tuple_cat();
+        ((void)t); // Prevent unused warning
+    }
+    {
+        constexpr std::tuple<> t1;
+        constexpr std::tuple<> t2 = std::tuple_cat(t1);
+        ((void)t2); // Prevent unused warning
+    }
+    {
+        constexpr std::tuple<> t = std::tuple_cat(std::tuple<>());
+        ((void)t); // Prevent unused warning
+    }
+    {
+        constexpr std::tuple<> t = std::tuple_cat(std::array<int, 0>());
+        ((void)t); // Prevent unused warning
+    }
+    {
+        constexpr std::tuple<int> t1(1);
+        constexpr std::tuple<int> t = std::tuple_cat(t1);
+        static_assert(std::get<0>(t) == 1, "");
+    }
+    {
+        constexpr std::tuple<int> t1(1);
+        constexpr std::tuple<int, int> t = std::tuple_cat(t1, t1);
+        static_assert(std::get<0>(t) == 1, "");
+        static_assert(std::get<1>(t) == 1, "");
+    }
+#endif
+    {
+        std::tuple<int, MoveOnly> t =
+                                std::tuple_cat(std::tuple<int, MoveOnly>(1, 2));
+        assert(std::get<0>(t) == 1);
+        assert(std::get<1>(t) == 2);
+    }
+    {
+        std::tuple<int, int, int> t = std::tuple_cat(std::array<int, 3>());
+        assert(std::get<0>(t) == 0);
+        assert(std::get<1>(t) == 0);
+        assert(std::get<2>(t) == 0);
+    }
+    {
+        std::tuple<int, MoveOnly> t = std::tuple_cat(std::pair<int, MoveOnly>(2, 1));
+        assert(std::get<0>(t) == 2);
+        assert(std::get<1>(t) == 1);
+    }
+
+    {
+        std::tuple<> t1;
+        std::tuple<> t2;
+        std::tuple<> t3 = std::tuple_cat(t1, t2);
+        ((void)t3); // Prevent unused warning
+    }
+    {
+        std::tuple<> t1;
+        std::tuple<int> t2(2);
+        std::tuple<int> t3 = std::tuple_cat(t1, t2);
+        assert(std::get<0>(t3) == 2);
+    }
+    {
+        std::tuple<> t1;
+        std::tuple<int> t2(2);
+        std::tuple<int> t3 = std::tuple_cat(t2, t1);
+        assert(std::get<0>(t3) == 2);
+    }
+    {
+        std::tuple<int*> t1;
+        std::tuple<int> t2(2);
+        std::tuple<int*, int> t3 = std::tuple_cat(t1, t2);
+        assert(std::get<0>(t3) == nullptr);
+        assert(std::get<1>(t3) == 2);
+    }
+    {
+        std::tuple<int*> t1;
+        std::tuple<int> t2(2);
+        std::tuple<int, int*> t3 = std::tuple_cat(t2, t1);
+        assert(std::get<0>(t3) == 2);
+        assert(std::get<1>(t3) == nullptr);
+    }
+    {
+        std::tuple<int*> t1;
+        std::tuple<int, double> t2(2, 3.5);
+        std::tuple<int*, int, double> t3 = std::tuple_cat(t1, t2);
+        assert(std::get<0>(t3) == nullptr);
+        assert(std::get<1>(t3) == 2);
+        assert(std::get<2>(t3) == 3.5);
+    }
+    {
+        std::tuple<int*> t1;
+        std::tuple<int, double> t2(2, 3.5);
+        std::tuple<int, double, int*> t3 = std::tuple_cat(t2, t1);
+        assert(std::get<0>(t3) == 2);
+        assert(std::get<1>(t3) == 3.5);
+        assert(std::get<2>(t3) == nullptr);
+    }
+    {
+        std::tuple<int*, MoveOnly> t1(nullptr, 1);
+        std::tuple<int, double> t2(2, 3.5);
+        std::tuple<int*, MoveOnly, int, double> t3 =
+                                              std::tuple_cat(std::move(t1), t2);
+        assert(std::get<0>(t3) == nullptr);
+        assert(std::get<1>(t3) == 1);
+        assert(std::get<2>(t3) == 2);
+        assert(std::get<3>(t3) == 3.5);
+    }
+    {
+        std::tuple<int*, MoveOnly> t1(nullptr, 1);
+        std::tuple<int, double> t2(2, 3.5);
+        std::tuple<int, double, int*, MoveOnly> t3 =
+                                              std::tuple_cat(t2, std::move(t1));
+        assert(std::get<0>(t3) == 2);
+        assert(std::get<1>(t3) == 3.5);
+        assert(std::get<2>(t3) == nullptr);
+        assert(std::get<3>(t3) == 1);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly> t1(1, 2);
+        std::tuple<int*, MoveOnly> t2(nullptr, 4);
+        std::tuple<MoveOnly, MoveOnly, int*, MoveOnly> t3 =
+                                   std::tuple_cat(std::move(t1), std::move(t2));
+        assert(std::get<0>(t3) == 1);
+        assert(std::get<1>(t3) == 2);
+        assert(std::get<2>(t3) == nullptr);
+        assert(std::get<3>(t3) == 4);
+    }
+
+    {
+        std::tuple<MoveOnly, MoveOnly> t1(1, 2);
+        std::tuple<int*, MoveOnly> t2(nullptr, 4);
+        std::tuple<MoveOnly, MoveOnly, int*, MoveOnly> t3 =
+                                   std::tuple_cat(std::tuple<>(),
+                                                  std::move(t1),
+                                                  std::move(t2));
+        assert(std::get<0>(t3) == 1);
+        assert(std::get<1>(t3) == 2);
+        assert(std::get<2>(t3) == nullptr);
+        assert(std::get<3>(t3) == 4);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly> t1(1, 2);
+        std::tuple<int*, MoveOnly> t2(nullptr, 4);
+        std::tuple<MoveOnly, MoveOnly, int*, MoveOnly> t3 =
+                                   std::tuple_cat(std::move(t1),
+                                                  std::tuple<>(),
+                                                  std::move(t2));
+        assert(std::get<0>(t3) == 1);
+        assert(std::get<1>(t3) == 2);
+        assert(std::get<2>(t3) == nullptr);
+        assert(std::get<3>(t3) == 4);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly> t1(1, 2);
+        std::tuple<int*, MoveOnly> t2(nullptr, 4);
+        std::tuple<MoveOnly, MoveOnly, int*, MoveOnly> t3 =
+                                   std::tuple_cat(std::move(t1),
+                                                  std::move(t2),
+                                                  std::tuple<>());
+        assert(std::get<0>(t3) == 1);
+        assert(std::get<1>(t3) == 2);
+        assert(std::get<2>(t3) == nullptr);
+        assert(std::get<3>(t3) == 4);
+    }
+    {
+        std::tuple<MoveOnly, MoveOnly> t1(1, 2);
+        std::tuple<int*, MoveOnly> t2(nullptr, 4);
+        std::tuple<MoveOnly, MoveOnly, int*, MoveOnly, int> t3 =
+                                   std::tuple_cat(std::move(t1),
+                                                  std::move(t2),
+                                                  std::tuple<int>(5));
+        assert(std::get<0>(t3) == 1);
+        assert(std::get<1>(t3) == 2);
+        assert(std::get<2>(t3) == nullptr);
+        assert(std::get<3>(t3) == 4);
+        assert(std::get<4>(t3) == 5);
+    }
+    {
+        // See bug #19616.
+        auto t1 = std::tuple_cat(
+            std::make_tuple(std::make_tuple(1)),
+            std::make_tuple()
+        );
+        assert(t1 == std::make_tuple(std::make_tuple(1)));
+
+        auto t2 = std::tuple_cat(
+            std::make_tuple(std::make_tuple(1)),
+            std::make_tuple(std::make_tuple(2))
+        );
+        assert(t2 == std::make_tuple(std::make_tuple(1), std::make_tuple(2)));
+    }
+    {
+        int x = 101;
+        std::tuple<int, const int, int&, const int&, int&&> t(42, 101, x, x, std::move(x));
+        const auto& ct = t;
+        std::tuple<int, const int, int&, const int&> t2(42, 101, x, x);
+        const auto& ct2 = t2;
+
+        auto r = std::tuple_cat(std::move(t), std::move(ct), t2, ct2);
+
+        ASSERT_SAME_TYPE(decltype(r), std::tuple<
+            int, const int, int&, const int&, int&&,
+            int, const int, int&, const int&, int&&,
+            int, const int, int&, const int&,
+            int, const int, int&, const int&>);
+        ((void)r);
+    }
+    {
+        std::tuple<NS::Namespaced> t1(NS::Namespaced{1});
+        std::tuple<NS::Namespaced> t = std::tuple_cat(t1);
+        std::tuple<NS::Namespaced, NS::Namespaced> t2 =
+            std::tuple_cat(t1, t1);
+        assert(std::get<0>(t).i == 1);
+        assert(std::get<0>(t2).i == 1);
+    }
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const.compile.fail.cpp
new file mode 100644
index 0000000..0be905e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const.compile.fail.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+//   typename tuple_element<I, tuple<Types...> >::type const&
+//   get(const tuple<Types...>& t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<double&, std::string, int> T;
+        double d = 1.5;
+        const T t(d, "high", 5);
+        assert(std::get<0>(t) == 1.5);
+        assert(std::get<1>(t) == "high");
+        assert(std::get<2>(t) == 5);
+        std::get<0>(t) = 2.5;
+        assert(std::get<0>(t) == 2.5);
+        assert(std::get<1>(t) == "high");
+        assert(std::get<2>(t) == 5);
+        assert(d == 2.5);
+
+        std::get<1>(t) = "four";
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const.pass.cpp
new file mode 100644
index 0000000..2f63811
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+//   typename tuple_element<I, tuple<Types...> >::type const&
+//   get(const tuple<Types...>& t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct Empty {};
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<int> T;
+        const T t(3);
+        assert(std::get<0>(t) == 3);
+    }
+    {
+        typedef std::tuple<std::string, int> T;
+        const T t("high", 5);
+        assert(std::get<0>(t) == "high");
+        assert(std::get<1>(t) == 5);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::tuple<double, int> T;
+        constexpr T t(2.718, 5);
+        static_assert(std::get<0>(t) == 2.718, "");
+        static_assert(std::get<1>(t) == 5, "");
+    }
+    {
+        typedef std::tuple<Empty> T;
+        constexpr T t{Empty()};
+        constexpr Empty e = std::get<0>(t);
+        ((void)e); // Prevent unused warning
+    }
+#endif
+    {
+        typedef std::tuple<double&, std::string, int> T;
+        double d = 1.5;
+        const T t(d, "high", 5);
+        assert(std::get<0>(t) == 1.5);
+        assert(std::get<1>(t) == "high");
+        assert(std::get<2>(t) == 5);
+        std::get<0>(t) = 2.5;
+        assert(std::get<0>(t) == 2.5);
+        assert(std::get<1>(t) == "high");
+        assert(std::get<2>(t) == 5);
+        assert(d == 2.5);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const_rv.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const_rv.fail.cpp
new file mode 100644
index 0000000..ff1e37d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const_rv.fail.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+//   const typename tuple_element<I, tuple<Types...> >::type&&
+//   get(const tuple<Types...>&& t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+
+template <class T> void cref(T const&) {}
+template <class T> void cref(T const&&) = delete;
+
+std::tuple<int> const tup4() { return std::make_tuple(4); }
+
+int main(int, char**)
+{
+    // LWG2485: tuple should not open a hole in the type system, get() should
+    // imitate [expr.ref]'s rules for accessing data members
+    {
+        cref(std::get<0>(tup4()));  // expected-error {{call to deleted function 'cref'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const_rv.pass.cpp
new file mode 100644
index 0000000..7785c9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_const_rv.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+//   const typename tuple_element<I, tuple<Types...> >::type&&
+//   get(const tuple<Types...>&& t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <string>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+    typedef std::tuple<int> T;
+    const T t(3);
+    static_assert(std::is_same<const int&&, decltype(std::get<0>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<0>(std::move(t))), "");
+    const int&& i = std::get<0>(std::move(t));
+    assert(i == 3);
+    }
+
+    {
+    typedef std::tuple<std::string, int> T;
+    const T t("high", 5);
+    static_assert(std::is_same<const std::string&&, decltype(std::get<0>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<0>(std::move(t))), "");
+    static_assert(std::is_same<const int&&, decltype(std::get<1>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<1>(std::move(t))), "");
+    const std::string&& s = std::get<0>(std::move(t));
+    const int&& i = std::get<1>(std::move(t));
+    assert(s == "high");
+    assert(i == 5);
+    }
+
+    {
+    int x = 42;
+    int const y = 43;
+    std::tuple<int&, int const&> const p(x, y);
+    static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<0>(std::move(p))), "");
+    static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<1>(std::move(p))), "");
+    }
+
+    {
+    int x = 42;
+    int const y = 43;
+    std::tuple<int&&, int const&&> const p(std::move(x), std::move(y));
+    static_assert(std::is_same<int&&, decltype(std::get<0>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<0>(std::move(p))), "");
+    static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<1>(std::move(p))), "");
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::tuple<double, int> T;
+    constexpr const T t(2.718, 5);
+    static_assert(std::get<0>(std::move(t)) == 2.718, "");
+    static_assert(std::get<1>(std::move(t)) == 5, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_non_const.pass.cpp
new file mode 100644
index 0000000..e32b2fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_non_const.pass.cpp
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+//   typename tuple_element<I, tuple<Types...> >::type&
+//   get(tuple<Types...>& t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 11
+
+struct Empty {};
+
+struct S {
+   std::tuple<int, Empty> a;
+   int k;
+   Empty e;
+   constexpr S() : a{1,Empty{}}, k(std::get<0>(a)), e(std::get<1>(a)) {}
+   };
+
+constexpr std::tuple<int, int> getP () { return { 3, 4 }; }
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<int> T;
+        T t(3);
+        assert(std::get<0>(t) == 3);
+        std::get<0>(t) = 2;
+        assert(std::get<0>(t) == 2);
+    }
+    {
+        typedef std::tuple<std::string, int> T;
+        T t("high", 5);
+        assert(std::get<0>(t) == "high");
+        assert(std::get<1>(t) == 5);
+        std::get<0>(t) = "four";
+        std::get<1>(t) = 4;
+        assert(std::get<0>(t) == "four");
+        assert(std::get<1>(t) == 4);
+    }
+    {
+        typedef std::tuple<double&, std::string, int> T;
+        double d = 1.5;
+        T t(d, "high", 5);
+        assert(std::get<0>(t) == 1.5);
+        assert(std::get<1>(t) == "high");
+        assert(std::get<2>(t) == 5);
+        std::get<0>(t) = 2.5;
+        std::get<1>(t) = "four";
+        std::get<2>(t) = 4;
+        assert(std::get<0>(t) == 2.5);
+        assert(std::get<1>(t) == "four");
+        assert(std::get<2>(t) == 4);
+        assert(d == 2.5);
+    }
+#if TEST_STD_VER > 11
+    { // get on an rvalue tuple
+        static_assert ( std::get<0> ( std::make_tuple ( 0.0f, 1, 2.0, 3L )) == 0, "" );
+        static_assert ( std::get<1> ( std::make_tuple ( 0.0f, 1, 2.0, 3L )) == 1, "" );
+        static_assert ( std::get<2> ( std::make_tuple ( 0.0f, 1, 2.0, 3L )) == 2, "" );
+        static_assert ( std::get<3> ( std::make_tuple ( 0.0f, 1, 2.0, 3L )) == 3, "" );
+        static_assert(S().k == 1, "");
+        static_assert(std::get<1>(getP()) == 4, "");
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_rv.pass.cpp
new file mode 100644
index 0000000..8dc20ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/get_rv.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+//   typename tuple_element<I, tuple<Types...> >::type&&
+//   get(tuple<Types...>&& t);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<std::unique_ptr<int> > T;
+        T t(std::unique_ptr<int>(new int(3)));
+        std::unique_ptr<int> p = std::get<0>(std::move(t));
+        assert(*p == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp
new file mode 100644
index 0000000..4fef6b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.fail.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <tuple>
+#include <string>
+#include <memory>
+
+#include "test_macros.h"
+
+struct UserType {};
+
+void test_bad_index() {
+    std::tuple<long, long, char, std::string, char, UserType, char> t1;
+    TEST_IGNORE_NODISCARD std::get<int>(t1); // expected-error@tuple:* {{type not found}}
+    TEST_IGNORE_NODISCARD std::get<long>(t1); // expected-note {{requested here}}
+    TEST_IGNORE_NODISCARD std::get<char>(t1); // expected-note {{requested here}}
+        // expected-error@tuple:* 2 {{type occurs more than once}}
+    std::tuple<> t0;
+    TEST_IGNORE_NODISCARD std::get<char*>(t0); // expected-node {{requested here}}
+        // expected-error@tuple:* 1 {{type not in empty type list}}
+}
+
+void test_bad_return_type() {
+    typedef std::unique_ptr<int> upint;
+    std::tuple<upint> t;
+    upint p = std::get<upint>(t); // expected-error{{deleted copy constructor}}
+}
+
+int main(int, char**)
+{
+    test_bad_index();
+    test_bad_return_type();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.pass.cpp
new file mode 100644
index 0000000..3f789d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.elem/tuple.by.type.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <tuple>
+#include <utility>
+#include <memory>
+#include <string>
+#include <complex>
+#include <type_traits>
+
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::complex<float> cf;
+    {
+    auto t1 = std::tuple<int, std::string, cf> { 42, "Hi", { 1,2 }};
+    assert ( std::get<int>(t1) == 42 ); // find at the beginning
+    assert ( std::get<std::string>(t1) == "Hi" ); // find in the middle
+    assert ( std::get<cf>(t1).real() == 1 ); // find at the end
+    assert ( std::get<cf>(t1).imag() == 2 );
+    }
+
+    {
+    auto t2 = std::tuple<int, std::string, int, cf> { 42, "Hi", 23, { 1,2 }};
+//  get<int> would fail!
+    assert ( std::get<std::string>(t2) == "Hi" );
+    assert (( std::get<cf>(t2) == cf{ 1,2 } ));
+    }
+
+    {
+    constexpr std::tuple<int, const int, double, double> p5 { 1, 2, 3.4, 5.6 };
+    static_assert ( std::get<int>(p5) == 1, "" );
+    static_assert ( std::get<const int>(p5) == 2, "" );
+    }
+
+    {
+    const std::tuple<int, const int, double, double> p5 { 1, 2, 3.4, 5.6 };
+    const int &i1 = std::get<int>(p5);
+    const int &i2 = std::get<const int>(p5);
+    assert ( i1 == 1 );
+    assert ( i2 == 2 );
+    }
+
+    {
+    typedef std::unique_ptr<int> upint;
+    std::tuple<upint> t(upint(new int(4)));
+    upint p = std::get<upint>(std::move(t)); // get rvalue
+    assert(*p == 4);
+    assert(std::get<upint>(t) == nullptr); // has been moved from
+    }
+
+    {
+    typedef std::unique_ptr<int> upint;
+    const std::tuple<upint> t(upint(new int(4)));
+    const upint&& p = std::get<upint>(std::move(t)); // get const rvalue
+    assert(*p == 4);
+    assert(std::get<upint>(t) != nullptr);
+    }
+
+    {
+    int x = 42;
+    int y = 43;
+    std::tuple<int&, int const&> const t(x, y);
+    static_assert(std::is_same<int&, decltype(std::get<int&>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<int&>(std::move(t))), "");
+    static_assert(std::is_same<int const&, decltype(std::get<int const&>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<int const&>(std::move(t))), "");
+    }
+
+    {
+    int x = 42;
+    int y = 43;
+    std::tuple<int&&, int const&&> const t(std::move(x), std::move(y));
+    static_assert(std::is_same<int&&, decltype(std::get<int&&>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<int&&>(std::move(t))), "");
+    static_assert(std::is_same<int const&&, decltype(std::get<int const&&>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<int const&&>(std::move(t))), "");
+    }
+
+    {
+    constexpr const std::tuple<int, const int, double, double> t { 1, 2, 3.4, 5.6 };
+    static_assert(std::get<int>(std::move(t)) == 1, "");
+    static_assert(std::get<const int>(std::move(t)) == 2, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.array.pass.cpp
new file mode 100644
index 0000000..2236b6d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.array.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+// struct tuple_element<I, tuple<Types...> >
+// {
+//     typedef Ti type;
+// };
+//
+//  LWG #2212 says that tuple_size and tuple_element must be
+//     available after including <utility>
+
+#include <array>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, std::size_t N, class U, size_t idx>
+void test()
+{
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<const T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<volatile T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<const volatile T> >::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, T>::type, U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, const T>::type, const U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, volatile T>::type, volatile U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, const volatile T>::type, const volatile U>::value), "");
+}
+
+int main(int, char**)
+{
+    test<std::array<int, 5>, 5, int, 0>();
+    test<std::array<int, 5>, 5, int, 1>();
+    test<std::array<const char *, 4>, 4, const char *, 3>();
+    test<std::array<volatile int, 4>, 4, volatile int, 3>();
+    test<std::array<char *, 3>, 3, char *, 1>();
+    test<std::array<char *, 3>, 3, char *, 2>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.ranges.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.ranges.pass.cpp
new file mode 100644
index 0000000..36f7745
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.ranges.pass.cpp
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <ranges>
+
+//  template<class T> struct tuple_size;
+//  template<size_t I, class T> struct tuple_element;
+
+#include <ranges>
+// Note: make sure to not include `<utility>` (or any other header including `<utility>`) because it also makes some
+// tuple specializations available, thus obscuring whether the `<ranges>` includes work correctly.
+
+using Iterator = int*;
+
+class SizedSentinel {
+public:
+    constexpr bool operator==(int*) const;
+    friend constexpr ptrdiff_t operator-(const SizedSentinel&, int*);
+    friend constexpr ptrdiff_t operator-(int*, const SizedSentinel&);
+};
+
+static_assert(std::sized_sentinel_for<SizedSentinel, Iterator>);
+using SizedRange = std::ranges::subrange<Iterator, SizedSentinel>;
+
+using UnsizedSentinel = std::unreachable_sentinel_t;
+static_assert(!std::sized_sentinel_for<UnsizedSentinel, Iterator>);
+using UnsizedRange = std::ranges::subrange<Iterator, UnsizedSentinel>;
+
+// Because the sentinel is unsized while the subrange is sized, an additional integer member will be used to store the
+// size -- make sure it doesn't affect the value of `tuple_size`.
+using ThreeElementRange = std::ranges::subrange<Iterator, UnsizedSentinel, std::ranges::subrange_kind::sized>;
+static_assert(std::ranges::sized_range<ThreeElementRange>);
+
+static_assert(std::tuple_size<SizedRange>::value == 2);
+static_assert(std::tuple_size<UnsizedRange>::value == 2);
+static_assert(std::tuple_size<ThreeElementRange>::value == 2);
+
+template <int I, class Range, class Expected>
+constexpr bool test_tuple_element() {
+  static_assert(std::same_as<typename std::tuple_element<I, Range>::type, Expected>);
+  static_assert(std::same_as<typename std::tuple_element<I, const Range>::type, Expected>);
+  // Note: the Standard does not mandate a specialization of `tuple_element` for volatile, so trying a `volatile Range`
+  // would fail to compile.
+
+  return true;
+}
+
+int main(int, char**) {
+  static_assert(test_tuple_element<0, SizedRange, Iterator>());
+  static_assert(test_tuple_element<1, SizedRange, SizedSentinel>());
+  static_assert(test_tuple_element<0, UnsizedRange, Iterator>());
+  static_assert(test_tuple_element<1, UnsizedRange, UnsizedSentinel>());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.utility.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.utility.pass.cpp
new file mode 100644
index 0000000..458e4ff
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple.include.utility.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   class tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+//
+//  LWG #2212 says that tuple_size and tuple_element must be
+//     available after including <utility>
+
+#include <cstddef>
+#include <utility>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, std::size_t N, class U, size_t idx>
+void test()
+{
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<const T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<volatile T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<const volatile T> >::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, T>::type, U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, const T>::type, const U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, volatile T>::type, volatile U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<idx, const volatile T>::type, const volatile U>::value), "");
+}
+
+int main(int, char**)
+{
+    test<std::pair<int, int>, 2, int, 0>();
+    test<std::pair<int, int>, 2, int, 1>();
+    test<std::pair<const int, int>, 2, int, 1>();
+    test<std::pair<int, volatile int>, 2, volatile int, 1>();
+    test<std::pair<char *, int>, 2, char *, 0>();
+    test<std::pair<char *, int>, 2, int,    1>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_element.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_element.fail.cpp
new file mode 100644
index 0000000..21b6968
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_element.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+// struct tuple_element<I, tuple<Types...> >
+// {
+//     typedef Ti type;
+// };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+
+int main(int, char**)
+{
+    using T =  std::tuple<int, long, void*>;
+    using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}}
+    using E2 = typename std::tuple_element<3, T>::type;
+    using E3 = typename std::tuple_element<4, T const>::type;
+        // expected-error-re@*:* 2 {{{{(static_assert|static assertion)}} failed}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_element.pass.cpp
new file mode 100644
index 0000000..f35de64
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_element.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <size_t I, class... Types>
+// struct tuple_element<I, tuple<Types...> >
+// {
+//     typedef Ti type;
+// };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, std::size_t N, class U>
+void test()
+{
+    static_assert((std::is_same<typename std::tuple_element<N, T>::type, U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<N, const T>::type, const U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<N, volatile T>::type, volatile U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<N, const volatile T>::type, const volatile U>::value), "");
+#if TEST_STD_VER > 11
+    static_assert((std::is_same<typename std::tuple_element_t<N, T>, U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element_t<N, const T>, const U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element_t<N, volatile T>, volatile U>::value), "");
+    static_assert((std::is_same<typename std::tuple_element_t<N, const volatile T>, const volatile U>::value), "");
+#endif
+}
+
+int main(int, char**)
+{
+    test<std::tuple<int>, 0, int>();
+    test<std::tuple<char, int>, 0, char>();
+    test<std::tuple<char, int>, 1, int>();
+    test<std::tuple<int*, char, int>, 0, int*>();
+    test<std::tuple<int*, char, int>, 1, char>();
+    test<std::tuple<int*, char, int>, 2, int>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.fail.cpp
new file mode 100644
index 0000000..2a43745
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <tuple>
+
+// template <class... Types>
+//   class tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+
+// Expect failures with a reference type, pointer type, and a non-tuple type.
+
+#include <tuple>
+
+int main(int, char**)
+{
+    (void)std::tuple_size<std::tuple<> &>::value; // expected-error {{implicit instantiation of undefined template}}
+    (void)std::tuple_size<int>::value; // expected-error {{implicit instantiation of undefined template}}
+    (void)std::tuple_size<std::tuple<>*>::value; // expected-error {{implicit instantiation of undefined template}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.pass.cpp
new file mode 100644
index 0000000..11cb496
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   class tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, std::size_t N>
+void test()
+{
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<const T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<volatile T> >::value), "");
+    static_assert((std::is_base_of<std::integral_constant<std::size_t, N>,
+                                   std::tuple_size<const volatile T> >::value), "");
+}
+
+int main(int, char**)
+{
+    test<std::tuple<>, 0>();
+    test<std::tuple<int>, 1>();
+    test<std::tuple<char, int>, 2>();
+    test<std::tuple<char, char*, int>, 3>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_incomplete.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_incomplete.fail.cpp
new file mode 100644
index 0000000..cde87e1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_incomplete.fail.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   struct tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <array>
+#include <type_traits>
+
+struct Dummy1 {};
+struct Dummy2 {};
+struct Dummy3 {};
+
+template <>
+struct std::tuple_size<Dummy1> {
+public:
+  static size_t value;
+};
+
+template <>
+struct std::tuple_size<Dummy2> {
+public:
+  static void value() {}
+};
+
+template <>
+struct std::tuple_size<Dummy3> {};
+
+int main(int, char**)
+{
+  // Test that tuple_size<const T> is not incomplete when tuple_size<T>::value
+  // is well-formed but not a constant expression.
+  {
+    // expected-error@*:* 1 {{is not a constant expression}}
+    (void)std::tuple_size<const Dummy1>::value; // expected-note {{here}}
+  }
+  // Test that tuple_size<const T> is not incomplete when tuple_size<T>::value
+  // is well-formed but not convertible to size_t.
+  {
+    // expected-error@*:* 1 {{value of type 'void ()' is not implicitly convertible to}}
+    (void)std::tuple_size<const Dummy2>::value; // expected-note {{here}}
+  }
+  // Test that tuple_size<const T> generates an error when tuple_size<T> is
+  // complete but ::value isn't a constant expression convertible to size_t.
+  {
+    // expected-error@*:* 1 {{no member named 'value'}}
+    (void)std::tuple_size<const Dummy3>::value; // expected-note {{here}}
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_incomplete.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_incomplete.pass.cpp
new file mode 100644
index 0000000..c0ec0ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_incomplete.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   struct tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <array>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, size_t Size = sizeof(std::tuple_size<T>)>
+constexpr bool is_complete(int) { static_assert(Size > 0, ""); return true; }
+template <class> constexpr bool is_complete(long) { return false; }
+template <class T> constexpr bool is_complete() { return is_complete<T>(0); }
+
+struct Dummy1 {};
+struct Dummy2 {};
+
+namespace std {
+template <> struct tuple_size<Dummy1> : public integral_constant<size_t, 0> {};
+}
+
+template <class T>
+void test_complete() {
+  static_assert(is_complete<T>(), "");
+  static_assert(is_complete<const T>(), "");
+  static_assert(is_complete<volatile T>(), "");
+  static_assert(is_complete<const volatile T>(), "");
+}
+
+template <class T>
+void test_incomplete() {
+  static_assert(!is_complete<T>(), "");
+  static_assert(!is_complete<const T>(), "");
+  static_assert(!is_complete<volatile T>(), "");
+  static_assert(!is_complete<const volatile T>(), "");
+}
+
+
+int main(int, char**)
+{
+  test_complete<std::tuple<> >();
+  test_complete<std::tuple<int&> >();
+  test_complete<std::tuple<int&&, int&, void*>>();
+  test_complete<std::pair<int, long> >();
+  test_complete<std::array<int, 5> >();
+  test_complete<Dummy1>();
+
+  test_incomplete<void>();
+  test_incomplete<int>();
+  test_incomplete<std::tuple<int>&>();
+  test_incomplete<Dummy2>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_structured_bindings.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_structured_bindings.pass.cpp
new file mode 100644
index 0000000..eb87e0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_structured_bindings.pass.cpp
@@ -0,0 +1,151 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   struct tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <tuple>
+#include <array>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct S { int x; };
+
+void test_decomp_user_type() {
+  {
+    S s{99};
+    auto [m1] = s;
+    auto& [r1] = s;
+    assert(m1 == 99);
+    assert(&r1 == &s.x);
+  }
+  {
+    S const s{99};
+    auto [m1] = s;
+    auto& [r1] = s;
+    assert(m1 == 99);
+    assert(&r1 == &s.x);
+  }
+}
+
+void test_decomp_tuple() {
+  typedef std::tuple<int> T;
+  {
+    T s{99};
+    auto [m1] = s;
+    auto& [r1] = s;
+    assert(m1 == 99);
+    assert(&r1 == &std::get<0>(s));
+  }
+  {
+    T const s{99};
+    auto [m1] = s;
+    auto& [r1] = s;
+    assert(m1 == 99);
+    assert(&r1 == &std::get<0>(s));
+  }
+}
+
+
+void test_decomp_pair() {
+  typedef std::pair<int, double> T;
+  {
+    T s{99, 42.5};
+    auto [m1, m2] = s;
+    auto& [r1, r2] = s;
+    assert(m1 == 99);
+    assert(m2 == 42.5);
+    assert(&r1 == &std::get<0>(s));
+    assert(&r2 == &std::get<1>(s));
+  }
+  {
+    T const s{99, 42.5};
+    auto [m1, m2] = s;
+    auto& [r1, r2] = s;
+    assert(m1 == 99);
+    assert(m2 == 42.5);
+    assert(&r1 == &std::get<0>(s));
+    assert(&r2 == &std::get<1>(s));
+  }
+}
+
+void test_decomp_array() {
+  typedef std::array<int, 3> T;
+  {
+    T s{{99, 42, -1}};
+    auto [m1, m2, m3] = s;
+    auto& [r1, r2, r3] = s;
+    assert(m1 == 99);
+    assert(m2 == 42);
+    assert(m3 == -1);
+    assert(&r1 == &std::get<0>(s));
+    assert(&r2 == &std::get<1>(s));
+    assert(&r3 == &std::get<2>(s));
+  }
+  {
+    T const s{{99, 42, -1}};
+    auto [m1, m2, m3] = s;
+    auto& [r1, r2, r3] = s;
+    assert(m1 == 99);
+    assert(m2 == 42);
+    assert(m3 == -1);
+    assert(&r1 == &std::get<0>(s));
+    assert(&r2 == &std::get<1>(s));
+    assert(&r3 == &std::get<2>(s));
+  }
+}
+
+struct Test {
+  int x;
+};
+
+template <size_t N>
+int get(Test const&) { static_assert(N == 0, ""); return -1; }
+
+template <>
+struct std::tuple_element<0, Test> {
+  typedef int type;
+};
+
+void test_before_tuple_size_specialization() {
+  Test const t{99};
+  auto& [p] = t;
+  assert(p == 99);
+}
+
+template <>
+struct std::tuple_size<Test> {
+public:
+  static const size_t value = 1;
+};
+
+void test_after_tuple_size_specialization() {
+  Test const t{99};
+  auto& [p] = t;
+  assert(p == -1);
+}
+
+int main(int, char**) {
+  test_decomp_user_type();
+  test_decomp_tuple();
+  test_decomp_pair();
+  test_decomp_array();
+  test_before_tuple_size_specialization();
+  test_after_tuple_size_specialization();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.fail.cpp
new file mode 100644
index 0000000..6b1ee68
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.fail.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value;
+
+// Expect failures with a reference type, pointer type, and a non-tuple type.
+
+#include <tuple>
+
+int main(int, char**)
+{
+    (void)std::tuple_size_v<std::tuple<> &>; // expected-note {{requested here}}
+    (void)std::tuple_size_v<int>; // expected-note {{requested here}}
+    (void)std::tuple_size_v<std::tuple<>*>; // expected-note {{requested here}}
+    // expected-error@tuple:* 3 {{implicit instantiation of undefined template}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.pass.cpp
new file mode 100644
index 0000000..1b21c6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_v.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <tuple>
+
+// template <class T> constexpr size_t tuple_size_v = tuple_size<T>::value;
+
+#include <tuple>
+#include <utility>
+#include <array>
+
+#include "test_macros.h"
+
+template <class Tuple, int Expect>
+void test()
+{
+    static_assert(std::tuple_size_v<Tuple> == Expect, "");
+    static_assert(std::tuple_size_v<Tuple> == std::tuple_size<Tuple>::value, "");
+    static_assert(std::tuple_size_v<Tuple const> == std::tuple_size<Tuple>::value, "");
+    static_assert(std::tuple_size_v<Tuple volatile> == std::tuple_size<Tuple>::value, "");
+    static_assert(std::tuple_size_v<Tuple const volatile> == std::tuple_size<Tuple>::value, "");
+}
+
+int main(int, char**)
+{
+    test<std::tuple<>, 0>();
+
+    test<std::tuple<int>, 1>();
+    test<std::array<int, 1>, 1>();
+
+    test<std::tuple<int, int>, 2>();
+    test<std::pair<int, int>, 2>();
+    test<std::array<int, 2>, 2>();
+
+    test<std::tuple<int, int, int>, 3>();
+    test<std::array<int, 3>, 3>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_value_sfinae.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_value_sfinae.pass.cpp
new file mode 100644
index 0000000..6ea92ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.helper/tuple_size_value_sfinae.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   class tuple_size<tuple<Types...>>
+//     : public integral_constant<size_t, sizeof...(Types)> { };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T, class = decltype(std::tuple_size<T>::value)>
+constexpr bool has_value(int) { return true; }
+template <class> constexpr bool has_value(long) { return false; }
+template <class T> constexpr bool has_value() { return has_value<T>(0); }
+
+struct Dummy {};
+
+int main(int, char**) {
+  // Test that the ::value member does not exist
+  static_assert(has_value<std::tuple<int> const>(), "");
+  static_assert(has_value<std::pair<int, long> volatile>(), "");
+  static_assert(!has_value<int>(), "");
+  static_assert(!has_value<const int>(), "");
+  static_assert(!has_value<volatile void>(), "");
+  static_assert(!has_value<const volatile std::tuple<int>&>(), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/eq.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/eq.pass.cpp
new file mode 100644
index 0000000..a8de656
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/eq.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator==(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T1;
+        typedef std::tuple<> T2;
+        const T1 t1;
+        const T2 t2;
+        assert(t1 == t2);
+        assert(!(t1 != t2));
+    }
+    {
+        typedef std::tuple<int> T1;
+        typedef std::tuple<double> T2;
+        const T1 t1(1);
+        const T2 t2(1.1);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<int> T1;
+        typedef std::tuple<double> T2;
+        const T1 t1(1);
+        const T2 t2(1);
+        assert(t1 == t2);
+        assert(!(t1 != t2));
+    }
+    {
+        typedef std::tuple<int, double> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1, 2);
+        assert(t1 == t2);
+        assert(!(t1 != t2));
+    }
+    {
+        typedef std::tuple<int, double> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1, 3);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<int, double> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1.1, 2);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<int, double> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1.1, 3);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 2, 3);
+        assert(t1 == t2);
+        assert(!(t1 != t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1.1, 2, 3);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 3, 3);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 2, 4);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 3, 2);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1.1, 2, 2);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1.1, 3, 3);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1.1, 3, 2);
+        assert(!(t1 == t2));
+        assert(t1 != t2);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        constexpr T1 t1(1, 2, 3);
+        constexpr T2 t2(1.1, 3, 2);
+        static_assert(!(t1 == t2), "");
+        static_assert(t1 != t2, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/lt.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/lt.pass.cpp
new file mode 100644
index 0000000..0ece614
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/lt.pass.cpp
@@ -0,0 +1,213 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator<(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+//
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator>(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+//
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator<=(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+//
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator>=(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T1;
+        typedef std::tuple<> T2;
+        const T1 t1;
+        const T2 t2;
+        assert(!(t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long> T1;
+        typedef std::tuple<double> T2;
+        const T1 t1(1);
+        const T2 t2(1);
+        assert(!(t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long> T1;
+        typedef std::tuple<double> T2;
+        const T1 t1(1);
+        const T2 t2(0.9);
+        assert(!(t1 <  t2));
+        assert(!(t1 <= t2));
+        assert( (t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long> T1;
+        typedef std::tuple<double> T2;
+        const T1 t1(1);
+        const T2 t2(1.1);
+        assert( (t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert(!(t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1, 2);
+        assert(!(t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(0.9, 2);
+        assert(!(t1 <  t2));
+        assert(!(t1 <= t2));
+        assert( (t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1.1, 2);
+        assert( (t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert(!(t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1, 1);
+        assert(!(t1 <  t2));
+        assert(!(t1 <= t2));
+        assert( (t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int> T1;
+        typedef std::tuple<double, long> T2;
+        const T1 t1(1, 2);
+        const T2 t2(1, 3);
+        assert( (t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert(!(t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 2, 3);
+        assert(!(t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(0.9, 2, 3);
+        assert(!(t1 <  t2));
+        assert(!(t1 <= t2));
+        assert( (t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1.1, 2, 3);
+        assert( (t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert(!(t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 1, 3);
+        assert(!(t1 <  t2));
+        assert(!(t1 <= t2));
+        assert( (t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 3, 3);
+        assert( (t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert(!(t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 2, 2);
+        assert(!(t1 <  t2));
+        assert(!(t1 <= t2));
+        assert( (t1 >  t2));
+        assert( (t1 >= t2));
+    }
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        const T1 t1(1, 2, 3);
+        const T2 t2(1, 2, 4);
+        assert( (t1 <  t2));
+        assert( (t1 <= t2));
+        assert(!(t1 >  t2));
+        assert(!(t1 >= t2));
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::tuple<long, int, double> T1;
+        typedef std::tuple<double, long, int> T2;
+        constexpr T1 t1(1, 2, 3);
+        constexpr T2 t2(1, 2, 4);
+        static_assert( (t1 <  t2), "");
+        static_assert( (t1 <= t2), "");
+        static_assert(!(t1 >  t2), "");
+        static_assert(!(t1 >= t2), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/size_incompatible_comparison.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/size_incompatible_comparison.verify.cpp
new file mode 100644
index 0000000..851f6fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/size_incompatible_comparison.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator==(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+// template<class... TTypes, class... UTypes>
+//   bool
+//   operator<(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+
+void f(std::tuple<int> t1, std::tuple<int, long> t2) {
+  // We test only the core comparison operators and trust that the others
+  // fall back on the same implementations prior to C++20.
+  static_cast<void>(t1 == t2); // expected-error@*:* {{}}
+  static_cast<void>(t1 < t2); // expected-error@*:* {{}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/size_incompatible_three_way.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/size_incompatible_three_way.compile.pass.cpp
new file mode 100644
index 0000000..f9c72a1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/size_incompatible_three_way.compile.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... TTypes, class... UTypes>
+//   auto
+//   operator<=>(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <tuple>
+
+template <class T, class U>
+concept can_compare = requires(T t, U u) { t <=> u; };
+
+typedef std::tuple<int> T1;
+typedef std::tuple<int, long> T2;
+
+static_assert(!can_compare<T1, T2>);
+static_assert(!can_compare<T2, T1>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/three_way.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/three_way.pass.cpp
new file mode 100644
index 0000000..d954314
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.rel/three_way.pass.cpp
@@ -0,0 +1,235 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... TTypes, class... UTypes>
+//   auto
+//   operator<=>(const tuple<TTypes...>& t, const tuple<UTypes...>& u);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include "test_macros.h"
+
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wsign-compare")
+TEST_MSVC_DIAGNOSTIC_IGNORED(4242 4244)
+
+#include <cassert>
+#include <compare>
+#include <limits>
+#include <tuple>
+#include <type_traits> // std::is_constant_evaluated
+
+// A custom three-way result type
+struct CustomEquality {
+  friend constexpr bool operator==(const CustomEquality&, int) noexcept { return true; }
+  friend constexpr bool operator<(const CustomEquality&, int) noexcept { return false; }
+  friend constexpr bool operator<(int, const CustomEquality&) noexcept { return false; }
+};
+
+constexpr bool test() {
+  // Empty tuple
+  {
+    typedef std::tuple<> T0;
+    // No member types yields strong ordering (all are equal).
+    ASSERT_SAME_TYPE(decltype(T0() <=> T0()), std::strong_ordering);
+    assert((T0() <=> T0()) == std::strong_ordering::equal);
+  }
+  // Mixed types with integers, which compare strongly ordered
+  {
+    typedef std::tuple<long> T1;
+    typedef std::tuple<short> T2;
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::strong_ordering);
+    assert((T1(1) <=> T2(1)) == std::strong_ordering::equal);
+    assert((T1(1) <=> T2(0)) == std::strong_ordering::greater);
+    assert((T1(1) <=> T2(2)) == std::strong_ordering::less);
+  }
+  {
+    typedef std::tuple<long, unsigned int> T1;
+    typedef std::tuple<short, unsigned long> T2;
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::strong_ordering);
+    assert((T1(1, 2) <=> T2(1, 2)) == std::strong_ordering::equal);
+    assert((T1(1, 2) <=> T2(0, 2)) == std::strong_ordering::greater);
+    assert((T1(1, 2) <=> T2(2, 2)) == std::strong_ordering::less);
+    assert((T1(1, 2) <=> T2(1, 1)) == std::strong_ordering::greater);
+    assert((T1(1, 2) <=> T2(1, 3)) == std::strong_ordering::less);
+  }
+  {
+    typedef std::tuple<long, int, unsigned short> T1;
+    typedef std::tuple<short, long, unsigned int> T2;
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::strong_ordering);
+    assert((T1(1, 2, 3) <=> T2(1, 2, 3)) == std::strong_ordering::equal);
+    assert((T1(1, 2, 3) <=> T2(0, 2, 3)) == std::strong_ordering::greater);
+    assert((T1(1, 2, 3) <=> T2(2, 2, 3)) == std::strong_ordering::less);
+    assert((T1(1, 2, 3) <=> T2(1, 1, 3)) == std::strong_ordering::greater);
+    assert((T1(1, 2, 3) <=> T2(1, 3, 3)) == std::strong_ordering::less);
+    assert((T1(1, 2, 3) <=> T2(1, 2, 2)) == std::strong_ordering::greater);
+    assert((T1(1, 2, 3) <=> T2(1, 2, 4)) == std::strong_ordering::less);
+  }
+  // Mixed types with floating point, which compare partially ordered
+  {
+    typedef std::tuple<long> T1;
+    typedef std::tuple<double> T2;
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+    assert((T1(1) <=> T2(1)) == std::partial_ordering::equivalent);
+    assert((T1(1) <=> T2(0.9)) == std::partial_ordering::greater);
+    assert((T1(1) <=> T2(1.1)) == std::partial_ordering::less);
+  }
+  {
+    typedef std::tuple<long, float> T1;
+    typedef std::tuple<double, unsigned int> T2;
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+    assert((T1(1, 2) <=> T2(1, 2)) == std::partial_ordering::equivalent);
+    assert((T1(1, 2) <=> T2(0.9, 2)) == std::partial_ordering::greater);
+    assert((T1(1, 2) <=> T2(1.1, 2)) == std::partial_ordering::less);
+    assert((T1(1, 2) <=> T2(1, 1)) == std::partial_ordering::greater);
+    assert((T1(1, 2) <=> T2(1, 3)) == std::partial_ordering::less);
+  }
+  {
+    typedef std::tuple<short, float, double> T1;
+    typedef std::tuple<double, long, unsigned int> T2;
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+    assert((T1(1, 2, 3) <=> T2(1, 2, 3)) == std::partial_ordering::equivalent);
+    assert((T1(1, 2, 3) <=> T2(0.9, 2, 3)) == std::partial_ordering::greater);
+    assert((T1(1, 2, 3) <=> T2(1.1, 2, 3)) == std::partial_ordering::less);
+    assert((T1(1, 2, 3) <=> T2(1, 1, 3)) == std::partial_ordering::greater);
+    assert((T1(1, 2, 3) <=> T2(1, 3, 3)) == std::partial_ordering::less);
+    assert((T1(1, 2, 3) <=> T2(1, 2, 2)) == std::partial_ordering::greater);
+    assert((T1(1, 2, 3) <=> T2(1, 2, 4)) == std::partial_ordering::less);
+  }
+  {
+    typedef std::tuple<float> T1;
+    typedef std::tuple<double> T2;
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    // Comparisons with NaN and non-NaN are non-constexpr in GCC, so both sides must be NaN
+    assert((T1(nan) <=> T2(nan)) == std::partial_ordering::unordered);
+  }
+  {
+    typedef std::tuple<double, double> T1;
+    typedef std::tuple<float, float> T2;
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    assert((T1(nan, 2) <=> T2(nan, 2)) == std::partial_ordering::unordered);
+    assert((T1(1, nan) <=> T2(1, nan)) == std::partial_ordering::unordered);
+  }
+  {
+    typedef std::tuple<double, float, float> T1;
+    typedef std::tuple<double, double, float> T2;
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    assert((T1(nan, 2, 3) <=> T2(nan, 2, 3)) == std::partial_ordering::unordered);
+    assert((T1(1, nan, 3) <=> T2(1, nan, 3)) == std::partial_ordering::unordered);
+    assert((T1(1, 2, nan) <=> T2(1, 2, nan)) == std::partial_ordering::unordered);
+  }
+  // Ordering classes and synthesized three way comparison
+  {
+    typedef std::tuple<long, int, unsigned int> T1;
+    typedef std::tuple<int, long, unsigned short> T2;
+    // All strongly ordered members yields strong ordering.
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::strong_ordering);
+  }
+  {
+    struct WeakSpaceship {
+      constexpr bool operator==(const WeakSpaceship&) const { return true; }
+      constexpr std::weak_ordering operator<=>(const WeakSpaceship&) const { return std::weak_ordering::equivalent; }
+    };
+    {
+      typedef std::tuple<int, unsigned int, WeakSpaceship> T1;
+      typedef std::tuple<int, unsigned long, WeakSpaceship> T2;
+      // Strongly ordered members and a weakly ordered member yields weak ordering.
+      ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::weak_ordering);
+    }
+    {
+      typedef std::tuple<unsigned int, int, WeakSpaceship> T1;
+      typedef std::tuple<double, long, WeakSpaceship> T2;
+      // Doubles are partially ordered, so one partial, one strong, and one weak ordering
+      // yields partial ordering.
+      ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+    }
+  }
+  {
+    struct NoSpaceship {
+      constexpr bool operator==(const NoSpaceship&) const { return true; }
+      constexpr bool operator<(const NoSpaceship&) const { return false; }
+    };
+    typedef std::tuple<int, unsigned int, NoSpaceship> T1;
+    typedef std::tuple<int, unsigned long, NoSpaceship> T2;
+    // Strongly ordered members and a weakly ordered member (synthesized) yields weak ordering.
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::weak_ordering);
+  }
+  {
+    struct SpaceshipNoEquals {
+      constexpr std::strong_ordering operator<=>(const SpaceshipNoEquals&) const { return std::strong_ordering::equal; }
+      constexpr bool operator<(const SpaceshipNoEquals&) const { return false; }
+    };
+    typedef std::tuple<int, unsigned int, SpaceshipNoEquals> T1;
+    typedef std::tuple<int, unsigned long, SpaceshipNoEquals> T2;
+    // Spaceship operator with no == operator falls back on the < operator and weak ordering.
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::weak_ordering);
+  }
+  {
+    struct CustomSpaceship {
+      constexpr CustomEquality operator<=>(const CustomSpaceship&) const { return CustomEquality(); }
+    };
+    typedef std::tuple<int, unsigned int, CustomSpaceship> T1;
+    typedef std::tuple<short, unsigned long, CustomSpaceship> T2;
+    typedef std::tuple<CustomSpaceship> T3;
+    // Custom three way return types cannot be used in synthesized three way comparison,
+    // but they can be used for (rewritten) operator< when synthesizing a weak ordering.
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::weak_ordering);
+    ASSERT_SAME_TYPE(decltype(T3() <=> T3()), std::weak_ordering);
+  }
+  {
+    typedef std::tuple<long, int> T1;
+    typedef std::tuple<long, unsigned int> T2;
+    // Even with the warning suppressed (-Wno-sign-compare) there should still be no <=> operator
+    // between signed and unsigned types, so we should end up with a synthesized weak ordering.
+    ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::weak_ordering);
+  }
+
+#ifdef TEST_COMPILER_GCC
+  // GCC cannot evaluate NaN @ non-NaN constexpr, so test that runtime-only.
+  if (!std::is_constant_evaluated())
+#endif
+  {
+    {
+      typedef std::tuple<double> T1;
+      typedef std::tuple<int> T2;
+      constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+      ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+      assert((T1(nan) <=> T2(1)) == std::partial_ordering::unordered);
+    }
+    {
+      typedef std::tuple<double, double> T1;
+      typedef std::tuple<int, int> T2;
+      constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+      ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+      assert((T1(nan, 2) <=> T2(1, 2)) == std::partial_ordering::unordered);
+      assert((T1(1, nan) <=> T2(1, 2)) == std::partial_ordering::unordered);
+    }
+    {
+      typedef std::tuple<double, double, double> T1;
+      typedef std::tuple<int, int, int> T2;
+      constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+      ASSERT_SAME_TYPE(decltype(T1() <=> T2()), std::partial_ordering);
+      assert((T1(nan, 2, 3) <=> T2(1, 2, 3)) == std::partial_ordering::unordered);
+      assert((T1(1, nan, 3) <=> T2(1, 2, 3)) == std::partial_ordering::unordered);
+      assert((T1(1, 2, nan) <=> T2(1, 2, 3)) == std::partial_ordering::unordered);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.special/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.special/non_member_swap.pass.cpp
new file mode 100644
index 0000000..c67e561
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.special/non_member_swap.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   void swap(tuple<Types...>& x, tuple<Types...>& y);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t1;
+        swap(t0, t1);
+    }
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(0));
+        T t1(MoveOnly(1));
+        swap(t0, t1);
+        assert(std::get<0>(t0) == 1);
+        assert(std::get<0>(t1) == 0);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1));
+        T t1(MoveOnly(2), MoveOnly(3));
+        swap(t0, t1);
+        assert(std::get<0>(t0) == 2);
+        assert(std::get<1>(t0) == 3);
+        assert(std::get<0>(t1) == 0);
+        assert(std::get<1>(t1) == 1);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
+        T t1(MoveOnly(3), MoveOnly(4), MoveOnly(5));
+        swap(t0, t1);
+        assert(std::get<0>(t0) == 3);
+        assert(std::get<1>(t0) == 4);
+        assert(std::get<2>(t0) == 5);
+        assert(std::get<0>(t1) == 0);
+        assert(std::get<1>(t1) == 1);
+        assert(std::get<2>(t1) == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.special/non_member_swap_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.special/non_member_swap_const.pass.cpp
new file mode 100644
index 0000000..a342095
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.special/non_member_swap_const.pass.cpp
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types>
+//   void swap(const tuple<Types...>& x, const tuple<Types...>& y);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <tuple>
+#include <cassert>
+
+struct S {
+  int* calls;
+  friend constexpr void swap(S& a, S& b) {
+    *a.calls += 1;
+    *b.calls += 1;
+  }
+};
+struct CS {
+  int* calls;
+  friend constexpr void swap(const CS& a, const CS& b) {
+    *a.calls += 1;
+    *b.calls += 1;
+  }
+};
+
+static_assert(std::is_swappable_v<std::tuple<>>);
+static_assert(std::is_swappable_v<std::tuple<S>>);
+static_assert(std::is_swappable_v<std::tuple<CS>>);
+static_assert(std::is_swappable_v<std::tuple<S&>>);
+static_assert(std::is_swappable_v<std::tuple<CS, S>>);
+static_assert(std::is_swappable_v<std::tuple<CS, S&>>);
+static_assert(std::is_swappable_v<const std::tuple<>>);
+static_assert(!std::is_swappable_v<const std::tuple<S>>);
+static_assert(std::is_swappable_v<const std::tuple<CS>>);
+static_assert(std::is_swappable_v<const std::tuple<S&>>);
+static_assert(!std::is_swappable_v<const std::tuple<CS, S>>);
+static_assert(std::is_swappable_v<const std::tuple<CS, S&>>);
+
+constexpr bool test() {
+  int cs_calls = 0;
+  int s_calls = 0;
+  S s1{&s_calls};
+  S s2{&s_calls};
+  const std::tuple<CS, S&> t1 = {CS{&cs_calls}, s1};
+  const std::tuple<CS, S&> t2 = {CS{&cs_calls}, s2};
+  swap(t1, t2);
+  assert(cs_calls == 2);
+  assert(s_calls == 2);
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.swap/member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.swap/member_swap.pass.cpp
new file mode 100644
index 0000000..7c70321
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.swap/member_swap.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// void swap(tuple& rhs);
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    {
+        typedef std::tuple<> T;
+        T t0;
+        T t1;
+        t0.swap(t1);
+    }
+    {
+        typedef std::tuple<MoveOnly> T;
+        T t0(MoveOnly(0));
+        T t1(MoveOnly(1));
+        t0.swap(t1);
+        assert(std::get<0>(t0) == 1);
+        assert(std::get<0>(t1) == 0);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1));
+        T t1(MoveOnly(2), MoveOnly(3));
+        t0.swap(t1);
+        assert(std::get<0>(t0) == 2);
+        assert(std::get<1>(t0) == 3);
+        assert(std::get<0>(t1) == 0);
+        assert(std::get<1>(t1) == 1);
+    }
+    {
+        typedef std::tuple<MoveOnly, MoveOnly, MoveOnly> T;
+        T t0(MoveOnly(0), MoveOnly(1), MoveOnly(2));
+        T t1(MoveOnly(3), MoveOnly(4), MoveOnly(5));
+        t0.swap(t1);
+        assert(std::get<0>(t0) == 3);
+        assert(std::get<1>(t0) == 4);
+        assert(std::get<2>(t0) == 5);
+        assert(std::get<0>(t1) == 0);
+        assert(std::get<1>(t1) == 1);
+        assert(std::get<2>(t1) == 2);
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER > 17
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.swap/member_swap_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.swap/member_swap_const.pass.cpp
new file mode 100644
index 0000000..5b1c550
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.swap/member_swap_const.pass.cpp
@@ -0,0 +1,103 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// void swap(const tuple& rhs);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+class SwapThrower {
+  void swap(SwapThrower&) = delete;
+  void swap(const SwapThrower&) const = delete;
+};
+
+void swap(const SwapThrower&, const SwapThrower&) { throw 0.f; }
+
+static_assert(std::is_swappable_v<const SwapThrower>);
+static_assert(std::is_swappable_with_v<const SwapThrower&, const SwapThrower&>);
+
+void test_noexcept() {
+  const std::tuple<SwapThrower> t1;
+  const std::tuple<SwapThrower> t2;
+
+  try {
+    t1.swap(t2);
+    std::swap(t1, t2);
+    assert(false);
+  } catch (float) {
+  }
+
+  try {
+    std::swap(std::as_const(t1), std::as_const(t2));
+    assert(false);
+  } catch (float) {
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+struct ConstSwappable {
+  mutable int i;
+};
+
+constexpr void swap(const ConstSwappable& lhs, const ConstSwappable& rhs) { std::swap(lhs.i, rhs.i); }
+
+constexpr bool test() {
+  {
+    typedef std::tuple<const ConstSwappable> T;
+    const T t0(ConstSwappable{0});
+    T t1(ConstSwappable{1});
+    t0.swap(t1);
+    assert(std::get<0>(t0).i == 1);
+    assert(std::get<0>(t1).i == 0);
+  }
+  {
+    typedef std::tuple<ConstSwappable, ConstSwappable> T;
+    const T t0({0}, {1});
+    const T t1({2}, {3});
+    t0.swap(t1);
+    assert(std::get<0>(t0).i == 2);
+    assert(std::get<1>(t0).i == 3);
+    assert(std::get<0>(t1).i == 0);
+    assert(std::get<1>(t1).i == 1);
+  }
+  {
+    typedef std::tuple<ConstSwappable, const ConstSwappable, const ConstSwappable> T;
+    const T t0({0}, {1}, {2});
+    const T t1({3}, {4}, {5});
+    t0.swap(t1);
+    assert(std::get<0>(t0).i == 3);
+    assert(std::get<1>(t0).i == 4);
+    assert(std::get<2>(t0).i == 5);
+    assert(std::get<0>(t1).i == 0);
+    assert(std::get<1>(t1).i == 1);
+    assert(std::get<2>(t1).i == 2);
+  }
+  return true;
+}
+
+int main(int, char**) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  test_noexcept();
+#endif
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.traits/uses_allocator.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.traits/uses_allocator.pass.cpp
new file mode 100644
index 0000000..0b0388a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/tuple/tuple.tuple/tuple.traits/uses_allocator.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template <class... Types, class Alloc>
+//   struct uses_allocator<tuple<Types...>, Alloc> : true_type { };
+
+// UNSUPPORTED: c++03
+
+#include <tuple>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct A {};
+
+int main(int, char**)
+{
+    {
+        typedef std::tuple<> T;
+        static_assert((std::is_base_of<std::true_type,
+                                       std::uses_allocator<T, A>>::value), "");
+    }
+    {
+        typedef std::tuple<int> T;
+        static_assert((std::is_base_of<std::true_type,
+                                       std::uses_allocator<T, A>>::value), "");
+    }
+    {
+        typedef std::tuple<char, int> T;
+        static_assert((std::is_base_of<std::true_type,
+                                       std::uses_allocator<T, A>>::value), "");
+    }
+    {
+        typedef std::tuple<double&, char, int> T;
+        static_assert((std::is_base_of<std::true_type,
+                                       std::uses_allocator<T, A>>::value), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.hash/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.hash/enabled_hash.pass.cpp
new file mode 100644
index 0000000..65f0d7d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.hash/enabled_hash.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <typeindex>
+
+// Test that <typeindex> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <typeindex>
+
+#include <functional>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.hash/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.hash/hash.pass.cpp
new file mode 100644
index 0000000..621aa71
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.hash/hash.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// template <>
+// struct hash<type_index>
+// {
+//     size_t operator()(type_index index) const;
+// };
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    typedef std::hash<std::type_index> H;
+    static_assert((std::is_same<typename H::argument_type, std::type_index>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+
+    std::type_index t1 = typeid(int);
+    assert(std::hash<std::type_index>()(t1) == t1.hash_code());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/cmp.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/cmp.pass.cpp
new file mode 100644
index 0000000..0892b60
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/cmp.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// bool operator==(const type_index& rhs) const noexcept;
+// bool operator!=(const type_index& rhs) const noexcept;
+// bool operator< (const type_index& rhs) const noexcept;
+// bool operator<=(const type_index& rhs) const noexcept;
+// bool operator> (const type_index& rhs) const noexcept;
+// bool operator>=(const type_index& rhs) const noexcept;
+// strong_ordering operator<=>(const type_index& rhs) const noexcept;
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+int main(int, char**) {
+  AssertComparisonsAreNoexcept<std::type_index>();
+  AssertComparisonsReturnBool<std::type_index>();
+#if TEST_STD_VER > 17
+  AssertOrderAreNoexcept<std::type_index>();
+  AssertOrderReturn<std::strong_ordering, std::type_index>();
+#endif
+
+  std::type_index t1 = typeid(int);
+  std::type_index t2 = typeid(int);
+  std::type_index t3 = typeid(long);
+
+  // Test `t1` and `t2` which should compare equal
+  assert(testComparisons(t1, t2, /*isEqual*/ true, /*isLess*/ false));
+#if TEST_STD_VER > 17
+  assert(testOrder(t1, t2, std::strong_ordering::equal));
+#endif
+
+  // Test `t1` and `t3` which are not equal
+  bool is_less = t1 < t3;
+  assert(testComparisons(t1, t3, /*isEqual*/ false, is_less));
+#if TEST_STD_VER > 17
+  assert(testOrder(t1, t3, is_less ? std::strong_ordering::less : std::strong_ordering::greater));
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/ctor.pass.cpp
new file mode 100644
index 0000000..202d818
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/ctor.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// type_index(const type_info& rhs);
+
+// UNSUPPORTED: no-rtti
+
+#include <typeinfo>
+#include <typeindex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::type_info const & info = typeid(int);
+    std::type_index t1(info);
+    assert(t1.name() == info.name());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/hash_code.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/hash_code.pass.cpp
new file mode 100644
index 0000000..0311d4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/hash_code.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// size_t hash_code() const;
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::type_info& ti = typeid(int);
+    std::type_index t1 = typeid(int);
+    assert(t1.hash_code() == ti.hash_code());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/name.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/name.pass.cpp
new file mode 100644
index 0000000..1101593
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.members/name.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// const char* name() const;
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    const std::type_info& ti = typeid(int);
+    std::type_index t1 = typeid(int);
+    assert(std::string(t1.name()) == ti.name());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.overview/copy_assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.overview/copy_assign.pass.cpp
new file mode 100644
index 0000000..7260f42
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.overview/copy_assign.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// type_index& operator=(const type_index& ti);
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::type_index t1(typeid(int));
+    std::type_index t2(typeid(double));
+    assert(t2 != t1);
+    t2 = t1;
+    assert(t2 == t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.overview/copy_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.overview/copy_ctor.pass.cpp
new file mode 100644
index 0000000..f552635
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.overview/copy_ctor.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// class type_index
+
+// type_index(const type_index& ti);
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::type_index t1(typeid(int));
+    std::type_index t2 = t1;
+    assert(t2 == t1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.synopsis/hash_type_index.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.synopsis/hash_type_index.pass.cpp
new file mode 100644
index 0000000..a361758
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/type.index/type.index.synopsis/hash_type_index.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <typeindex>
+
+// struct hash<type_index>
+// {
+//     size_t operator()(type_index index) const;
+// };
+
+// UNSUPPORTED: no-rtti
+
+#include <typeindex>
+#include <type_traits>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "poisoned_hash_helper.h"
+#endif
+
+int main(int, char**)
+{
+  {
+#if TEST_STD_VER <= 14
+    typedef std::hash<std::type_index> H;
+    static_assert((std::is_same<typename H::argument_type, std::type_index>::value), "" );
+    static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
+#endif
+  }
+#if TEST_STD_VER >= 11
+  {
+    test_hash_enabled_for_type<std::type_index>(std::type_index(typeid(int)));
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utilities.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utilities.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utilities.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/allocator.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/allocator.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/allocator.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/hash.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/hash.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/hash.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/nullablepointer.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/nullablepointer.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/nullablepointer.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/swappable.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/swappable.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/swappable.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/utility.arg.requirements/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/utility.arg.requirements/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility.requirements/utility.arg.requirements/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/as_const/as_const.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/as_const/as_const.compile.fail.cpp
new file mode 100644
index 0000000..8c0bea2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/as_const/as_const.compile.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class T> constexpr add_const<T>& as_const(T& t) noexcept;      // C++17
+// template <class T>           add_const<T>& as_const(const T&&) = delete; // C++17
+
+#include <utility>
+
+struct S {int i;};
+
+int main(int, char**)
+{
+    std::as_const(S{});
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/as_const/as_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/as_const/as_const.pass.cpp
new file mode 100644
index 0000000..3f0f9d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/as_const/as_const.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// template <class T> constexpr add_const<T>& as_const(T& t) noexcept;      // C++17
+// template <class T>           add_const<T>& as_const(const T&&) = delete; // C++17
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+struct S {int i;};
+bool operator==(const S& x, const S& y) { return x.i == y.i; }
+bool operator==(const volatile S& x, const volatile S& y) { return x.i == y.i; }
+
+template<typename T>
+void test(T& t)
+{
+    static_assert(std::is_const<typename std::remove_reference<decltype(std::as_const                  (t))>::type>::value, "");
+    static_assert(std::is_const<typename std::remove_reference<decltype(std::as_const<               T>(t))>::type>::value, "");
+    static_assert(std::is_const<typename std::remove_reference<decltype(std::as_const<const          T>(t))>::type>::value, "");
+    static_assert(std::is_const<typename std::remove_reference<decltype(std::as_const<volatile       T>(t))>::type>::value, "");
+    static_assert(std::is_const<typename std::remove_reference<decltype(std::as_const<const volatile T>(t))>::type>::value, "");
+
+    assert(std::as_const(t) == t);
+    assert(std::as_const<               T>(t) == t);
+    assert(std::as_const<const          T>(t) == t);
+    assert(std::as_const<volatile       T>(t) == t);
+    assert(std::as_const<const volatile T>(t) == t);
+}
+
+int main(int, char**)
+{
+    int i = 3;
+    double d = 4.0;
+    S s{2};
+    test(i);
+    test(d);
+    test(s);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/declval/declval.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/declval/declval.pass.cpp
new file mode 100644
index 0000000..f56a6fd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/declval/declval.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T> typename add_rvalue_reference<T>::type declval() noexcept;
+
+#include <utility>
+#include <type_traits>
+
+#include "test_macros.h"
+
+class A
+{
+    A(const A&);
+    A& operator=(const A&);
+};
+
+int main(int, char**)
+{
+    static_assert((std::is_same<decltype(std::declval<A>()), A&&>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/exchange/exchange.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/exchange/exchange.pass.cpp
new file mode 100644
index 0000000..da5bf34
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/exchange/exchange.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+// <utility>
+
+// exchange
+
+// template<class T, class U=T>
+//    constexpr T            // constexpr after C++17
+//    exchange(T& obj, U&& new_value)
+//      noexcept(is_nothrow_move_constructible<T>::value && is_nothrow_assignable<T&, U>::value);
+
+#include <utility>
+#include <cassert>
+#include <string>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 17
+TEST_CONSTEXPR bool test_constexpr() {
+    int v = 12;
+
+    if (12 != std::exchange(v,23) || v != 23)
+        return false;
+
+    if (23 != std::exchange(v,static_cast<short>(67)) || v != 67)
+        return false;
+
+    if (67 != std::exchange<int, short>(v, {}) || v != 0)
+        return false;
+    return true;
+    }
+#endif
+
+template<bool Move, bool Assign>
+struct TestNoexcept {
+    TestNoexcept() = default;
+    TestNoexcept(const TestNoexcept&);
+    TestNoexcept(TestNoexcept&&) noexcept(Move);
+    TestNoexcept& operator=(const TestNoexcept&);
+    TestNoexcept& operator=(TestNoexcept&&) noexcept(Assign);
+};
+
+constexpr bool test_noexcept() {
+  {
+    int x = 42;
+    ASSERT_NOEXCEPT(std::exchange(x, 42));
+  }
+  {
+    TestNoexcept<true, true> x;
+    ASSERT_NOEXCEPT(std::exchange(x, std::move(x)));
+    ASSERT_NOT_NOEXCEPT(std::exchange(x, x)); // copy-assignment is not noexcept
+  }
+  {
+    TestNoexcept<true, false> x;
+    ASSERT_NOT_NOEXCEPT(std::exchange(x, std::move(x)));
+  }
+  {
+    TestNoexcept<false, true> x;
+    ASSERT_NOT_NOEXCEPT(std::exchange(x, std::move(x)));
+  }
+
+  return true;
+}
+
+int main(int, char**)
+{
+    {
+    int v = 12;
+    assert ( std::exchange ( v, 23 ) == 12 );
+    assert ( v == 23 );
+    assert ( std::exchange ( v, static_cast<short>(67) ) == 23 );
+    assert ( v == 67 );
+
+    assert ((std::exchange<int, short> ( v, {} )) == 67 );
+    assert ( v == 0 );
+
+    }
+
+    {
+    bool b = false;
+    assert ( !std::exchange ( b, true ));
+    assert ( b );
+    }
+
+    {
+    const std::string s1 ( "Hi Mom!" );
+    const std::string s2 ( "Yo Dad!" );
+    std::string s3 = s1; // Mom
+    assert ( std::exchange ( s3, s2 ) == s1 );
+    assert ( s3 == s2 );
+    assert ( std::exchange ( s3, "Hi Mom!" ) == s2 );
+    assert ( s3 == s1 );
+
+    s3 = s2; // Dad
+    assert ( std::exchange ( s3, {} ) == s2 );
+    assert ( s3.size () == 0 );
+
+    s3 = s2; // Dad
+    assert ( std::exchange ( s3, "" ) == s2 );
+    assert ( s3.size () == 0 );
+    }
+
+#if TEST_STD_VER > 17
+    static_assert(test_constexpr());
+#endif
+
+    static_assert(test_noexcept(), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward.fail.cpp
new file mode 100644
index 0000000..61a3e18
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward.fail.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test forward
+
+#include <utility>
+
+#include "test_macros.h"
+
+struct A
+{
+};
+
+A source() {return A();}
+const A csource() {return A();}
+
+int main(int, char**)
+{
+    {
+        (void)std::forward<A&>(source());  // expected-note {{requested here}}
+        // expected-error-re@*:* 1 {{{{(static_assert|static assertion)}} failed{{.*}}cannot forward an rvalue as an lvalue}}
+    }
+    {
+        const A ca = A();
+        std::forward<A&>(ca); // expected-error {{no matching function for call to 'forward'}}
+    }
+    {
+        std::forward<A&>(csource());  // expected-error {{no matching function for call to 'forward'}}
+    }
+    {
+        const A ca = A();
+        std::forward<A>(ca); // expected-error {{no matching function for call to 'forward'}}
+    }
+    {
+        std::forward<A>(csource()); // expected-error {{no matching function for call to 'forward'}}
+    }
+    {
+        A a;
+        std::forward(a); // expected-error {{no matching function for call to 'forward'}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward.pass.cpp
new file mode 100644
index 0000000..689e330
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward.pass.cpp
@@ -0,0 +1,90 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// test forward
+
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+};
+
+A source() TEST_NOEXCEPT {return A();}
+const A csource() TEST_NOEXCEPT {return A();}
+
+
+#if TEST_STD_VER > 11
+constexpr bool test_constexpr_forward() {
+    int x = 42;
+    const int cx = 101;
+    return std::forward<int&>(x)        == 42
+        && std::forward<int>(x)         == 42
+        && std::forward<const int&>(x)  == 42
+        && std::forward<const int>(x)   == 42
+        && std::forward<int&&>(x)       == 42
+        && std::forward<const int&&>(x) == 42
+        && std::forward<const int&>(cx) == 101
+        && std::forward<const int>(cx)  == 101;
+}
+#endif
+
+int main(int, char**)
+{
+    A a;
+    const A ca = A();
+
+    ((void)a); // Prevent unused warning
+    ((void)ca); // Prevent unused warning
+
+    static_assert(std::is_same<decltype(std::forward<A&>(a)), A&>::value, "");
+    static_assert(std::is_same<decltype(std::forward<A>(a)), A&&>::value, "");
+    static_assert(std::is_same<decltype(std::forward<A>(source())), A&&>::value, "");
+    ASSERT_NOEXCEPT(std::forward<A&>(a));
+    ASSERT_NOEXCEPT(std::forward<A>(a));
+    ASSERT_NOEXCEPT(std::forward<A>(source()));
+
+    static_assert(std::is_same<decltype(std::forward<const A&>(a)), const A&>::value, "");
+    static_assert(std::is_same<decltype(std::forward<const A>(a)), const A&&>::value, "");
+    static_assert(std::is_same<decltype(std::forward<const A>(source())), const A&&>::value, "");
+    ASSERT_NOEXCEPT(std::forward<const A&>(a));
+    ASSERT_NOEXCEPT(std::forward<const A>(a));
+    ASSERT_NOEXCEPT(std::forward<const A>(source()));
+
+    static_assert(std::is_same<decltype(std::forward<const A&>(ca)), const A&>::value, "");
+    static_assert(std::is_same<decltype(std::forward<const A>(ca)), const A&&>::value, "");
+    static_assert(std::is_same<decltype(std::forward<const A>(csource())), const A&&>::value, "");
+    ASSERT_NOEXCEPT(std::forward<const A&>(ca));
+    ASSERT_NOEXCEPT(std::forward<const A>(ca));
+    ASSERT_NOEXCEPT(std::forward<const A>(csource()));
+
+#if TEST_STD_VER > 11
+    {
+    constexpr int i2 = std::forward<int>(42);
+    static_assert(std::forward<int>(42) == 42, "");
+    static_assert(std::forward<const int&>(i2) == 42, "");
+    static_assert(test_constexpr_forward(), "");
+    }
+#endif
+#if TEST_STD_VER == 11 && defined(_LIBCPP_VERSION)
+    // Test that std::forward is constexpr in C++11. This is an extension
+    // provided by both libc++ and libstdc++.
+    {
+    constexpr int i2 = std::forward<int>(42);
+    static_assert(std::forward<int>(42) == 42, "" );
+    static_assert(std::forward<const int&>(i2) == 42, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward_like.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward_like.pass.cpp
new file mode 100644
index 0000000..7ce75c5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/forward_like.pass.cpp
@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// test forward_like
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+struct U {}; // class type so const-qualification is not stripped from a prvalue
+using CU = const U;
+using T  = int;
+using CT = const T;
+
+U u{};
+const U& cu = u;
+
+static_assert(std::is_same_v<decltype(std::forward_like<T>(U{})), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T>(CU{})), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T>(u)), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T>(cu)), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T>(std::move(u))), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T>(std::move(cu))), CU&&>);
+
+static_assert(std::is_same_v<decltype(std::forward_like<CT>(U{})), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT>(CU{})), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT>(u)), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT>(cu)), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT>(std::move(u))), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT>(std::move(cu))), CU&&>);
+
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(U{})), U&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(CU{})), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(u)), U&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(cu)), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(std::move(u))), U&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(std::move(cu))), CU&>);
+
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(U{})), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(CU{})), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(u)), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(cu)), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(std::move(u))), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(std::move(cu))), CU&>);
+
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(U{})), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(CU{})), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(u)), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(cu)), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(std::move(u))), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(std::move(cu))), CU&&>);
+
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(U{})), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(CU{})), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(u)), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(cu)), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(std::move(u))), CU&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(std::move(cu))), CU&&>);
+
+static_assert(noexcept(std::forward_like<T>(u)));
+
+static_assert(std::is_same_v<decltype(std::forward_like<U&>(u)), U&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CU&>(cu)), CU&>);
+static_assert(std::is_same_v<decltype(std::forward_like<U&&>(std::move(u))), U&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CU&&>(std::move(cu))), CU&&>);
+
+struct NoCtorCopyMove {
+  NoCtorCopyMove() = delete;
+  NoCtorCopyMove(const NoCtorCopyMove&) = delete;
+  NoCtorCopyMove(NoCtorCopyMove&&) = delete;
+};
+
+static_assert(std::is_same_v<decltype(std::forward_like<CT&&>(std::declval<NoCtorCopyMove>())), const NoCtorCopyMove&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<CT&>(std::declval<NoCtorCopyMove>())), const NoCtorCopyMove&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&&>(std::declval<NoCtorCopyMove>())), NoCtorCopyMove&&>);
+static_assert(std::is_same_v<decltype(std::forward_like<T&>(std::declval<NoCtorCopyMove>())), NoCtorCopyMove&>);
+
+static_assert(noexcept(std::forward_like<T>(std::declval<NoCtorCopyMove>())));
+
+constexpr bool test() {
+  {
+    int val       = 1729;
+    auto&& result = std::forward_like<const double&>(val);
+    static_assert(std::is_same_v<decltype(result), const int&>);
+    assert(&result == &val);
+  }
+  {
+    int val       = 1729;
+    auto&& result = std::forward_like<double&>(val);
+    static_assert(std::is_same_v<decltype(result), int&>);
+    assert(&result == &val);
+  }
+  {
+    int val       = 1729;
+    auto&& result = std::forward_like<const double&&>(val);
+    static_assert(std::is_same_v<decltype(result), const int&&>);
+    assert(&result == &val);
+  }
+  {
+    int val       = 1729;
+    auto&& result = std::forward_like<double&&>(val);
+    static_assert(std::is_same_v<decltype(result), int&&>);
+    assert(&result == &val);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move.fail.cpp
new file mode 100644
index 0000000..3434b2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// This test should pass in C++03 with Clang extensions because Clang does
+// not implicitly delete the copy constructor when move constructors are
+// defaulted using extensions.
+
+// XFAIL: c++03
+
+// test move
+
+#include <utility>
+#include <cassert>
+
+struct move_only {
+    move_only() {}
+    move_only(move_only&&) = default;
+    move_only& operator=(move_only&&) = default;
+};
+
+move_only source() {return move_only();}
+const move_only csource() {return move_only();}
+
+void test(move_only) {}
+
+int main(int, char**)
+{
+  const move_only ca = move_only();
+  // expected-error@+1 {{call to implicitly-deleted copy constructor of 'move_only'}}
+  test(std::move(ca));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move.pass.cpp
new file mode 100644
index 0000000..e04aa13
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move.pass.cpp
@@ -0,0 +1,117 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test move
+
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+class move_only
+{
+    move_only(const move_only&);
+    move_only& operator=(const move_only&);
+public:
+    move_only(move_only&&) {}
+    move_only& operator=(move_only&&) {return *this;}
+
+    move_only() {}
+};
+
+move_only source() {return move_only();}
+const move_only csource() {return move_only();}
+
+void test(move_only) {}
+
+int x = 42;
+const int& cx = x;
+
+template <class QualInt>
+QualInt get() TEST_NOEXCEPT { return static_cast<QualInt>(x); }
+
+
+int copy_ctor = 0;
+int move_ctor = 0;
+
+struct A {
+    A() {}
+    A(const A&) {++copy_ctor;}
+    A(A&&) {++move_ctor;}
+    A& operator=(const A&) = delete;
+};
+
+#if TEST_STD_VER > 11
+constexpr bool test_constexpr_move() {
+    int y = 42;
+    const int cy = y;
+    return std::move(y) == 42
+        && std::move(cy) == 42
+        && std::move(static_cast<int&&>(y)) == 42
+        && std::move(static_cast<int const&&>(y)) == 42;
+}
+#endif
+int main(int, char**)
+{
+    { // Test return type and noexcept.
+        static_assert(std::is_same<decltype(std::move(x)), int&&>::value, "");
+        ASSERT_NOEXCEPT(std::move(x));
+        static_assert(std::is_same<decltype(std::move(cx)), const int&&>::value, "");
+        ASSERT_NOEXCEPT(std::move(cx));
+        static_assert(std::is_same<decltype(std::move(42)), int&&>::value, "");
+        ASSERT_NOEXCEPT(std::move(42));
+        static_assert(std::is_same<decltype(std::move(get<const int&&>())), const int&&>::value, "");
+        ASSERT_NOEXCEPT(std::move(get<int const&&>()));
+    }
+    { // test copy and move semantics
+        A a;
+        const A ca = A();
+
+        assert(copy_ctor == 0);
+        assert(move_ctor == 0);
+
+        A a2 = a; (void)a2;
+        assert(copy_ctor == 1);
+        assert(move_ctor == 0);
+
+        A a3 = std::move(a); (void)a3;
+        assert(copy_ctor == 1);
+        assert(move_ctor == 1);
+
+        A a4 = ca; (void)a4;
+        assert(copy_ctor == 2);
+        assert(move_ctor == 1);
+
+        A a5 = std::move(ca); (void)a5;
+        assert(copy_ctor == 3);
+        assert(move_ctor == 1);
+    }
+    { // test on a move only type
+        move_only mo;
+        test(std::move(mo));
+        test(source());
+    }
+#if TEST_STD_VER > 11
+    {
+        constexpr int y = 42;
+        static_assert(std::move(y) == 42, "");
+        static_assert(test_constexpr_move(), "");
+    }
+#endif
+#if TEST_STD_VER == 11 && defined(_LIBCPP_VERSION)
+    // Test that std::forward is constexpr in C++11. This is an extension
+    // provided by both libc++ and libstdc++.
+    {
+        constexpr int y = 42;
+        static_assert(std::move(y) == 42, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move_if_noexcept.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move_if_noexcept.pass.cpp
new file mode 100644
index 0000000..0ae7340
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/forward/move_if_noexcept.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+// <utility>
+
+// template <class T>
+//     typename conditional
+//     <
+//         !is_nothrow_move_constructible<T>::value && is_copy_constructible<T>::value,
+//         const T&,
+//         T&&
+//     >::type
+//     move_if_noexcept(T& x);
+
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+class A
+{
+    A(const A&);
+    A& operator=(const A&);
+public:
+
+    A() {}
+    A(A&&) {}
+};
+
+struct legacy
+{
+    legacy() {}
+    legacy(const legacy&);
+};
+
+int main(int, char**)
+{
+    int i = 0;
+    const int ci = 0;
+
+    legacy l;
+    A a;
+    const A ca;
+
+    static_assert((std::is_same<decltype(std::move_if_noexcept(i)), int&&>::value), "");
+    static_assert((std::is_same<decltype(std::move_if_noexcept(ci)), const int&&>::value), "");
+    static_assert((std::is_same<decltype(std::move_if_noexcept(a)), A&&>::value), "");
+    static_assert((std::is_same<decltype(std::move_if_noexcept(ca)), const A&&>::value), "");
+    static_assert((std::is_same<decltype(std::move_if_noexcept(l)), const legacy&>::value), "");
+
+#if TEST_STD_VER > 11
+    constexpr int i1 = 23;
+    constexpr int i2 = std::move_if_noexcept(i1);
+    static_assert(i2 == 23, "" );
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/assign.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/assign.pass.cpp
new file mode 100644
index 0000000..7977794
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/assign.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator operator=(polymorphic_allocator const &) = delete
+
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> T;
+  static_assert(!std::is_copy_assignable<T>::value, "");
+  static_assert(!std::is_move_assignable<T>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/copy.pass.cpp
new file mode 100644
index 0000000..2d1b429
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/copy.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator<T>::polymorphic_allocator(polymorphic_allocator const &);
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> A1;
+  {
+    static_assert(std::is_copy_constructible<A1>::value, "");
+    static_assert(std::is_move_constructible<A1>::value, "");
+  }
+  // copy
+  {
+    A1 const a((std::pmr::memory_resource*)42);
+    A1 const a2(a);
+    assert(a.resource() == a2.resource());
+  }
+  // move
+  {
+    A1 a((std::pmr::memory_resource*)42);
+    A1 a2(std::move(a));
+    assert(a.resource() == a2.resource());
+    assert(a2.resource() == (std::pmr::memory_resource*)42);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/default.pass.cpp
new file mode 100644
index 0000000..02a02c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/default.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator<T>::polymorphic_allocator() noexcept
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  {
+    static_assert(std::is_nothrow_default_constructible<std::pmr::polymorphic_allocator<void>>::value,
+                  "Must me nothrow default constructible");
+  }
+  {
+    // test that the allocator gets its resource from get_default_resource
+    TestResource R1(42);
+    std::pmr::set_default_resource(&R1);
+
+    typedef std::pmr::polymorphic_allocator<void> A;
+    A const a;
+    assert(a.resource() == &R1);
+
+    std::pmr::set_default_resource(nullptr);
+    A const a2;
+    assert(a.resource() == &R1);
+    assert(a2.resource() == std::pmr::new_delete_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/memory_resource_convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/memory_resource_convert.pass.cpp
new file mode 100644
index 0000000..1f58228
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/memory_resource_convert.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator<T>::polymorphic_allocator(memory_resource *)
+
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  {
+    typedef std::pmr::polymorphic_allocator<void> A;
+    static_assert(std::is_convertible_v<decltype(nullptr), A>);
+    static_assert(std::is_convertible_v<std::pmr::memory_resource*, A>);
+  }
+  {
+    typedef std::pmr::polymorphic_allocator<void> A;
+    TestResource R;
+    A const a(&R);
+    assert(a.resource() == &R);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/other_alloc.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/other_alloc.pass.cpp
new file mode 100644
index 0000000..93df604
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.ctor/other_alloc.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U>
+// polymorphic_allocator<T>::polymorphic_allocator(polymorphic_allocator<U> const &);
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> A1;
+  typedef std::pmr::polymorphic_allocator<char> A2;
+  { // Test that the conversion is implicit and noexcept.
+    static_assert(std::is_convertible<A1 const&, A2>::value, "");
+    static_assert(std::is_convertible<A2 const&, A1>::value, "");
+    static_assert(std::is_nothrow_constructible<A1, A2 const&>::value, "");
+    static_assert(std::is_nothrow_constructible<A2, A1 const&>::value, "");
+  }
+  // copy other type
+  {
+    A1 const a((std::pmr::memory_resource*)42);
+    A2 const a2(a);
+    assert(a.resource() == a2.resource());
+    assert(a2.resource() == (std::pmr::memory_resource*)42);
+  }
+  {
+    A1 a((std::pmr::memory_resource*)42);
+    A2 const a2(std::move(a));
+    assert(a.resource() == a2.resource());
+    assert(a2.resource() == (std::pmr::memory_resource*)42);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.eq/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.eq/equal.pass.cpp
new file mode 100644
index 0000000..f291489
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.eq/equal.pass.cpp
@@ -0,0 +1,133 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator;
+
+// template <class T, class U>
+// bool operator==(
+//      polymorphic_allocator<T> const &
+//    , polymorphic_allocator<U> const &) noexcept
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> A1;
+  typedef std::pmr::polymorphic_allocator<int> A2;
+  // check return types
+  {
+    A1 const a1;
+    A2 const a2;
+    static_assert(std::is_same_v<decltype(a1 == a2), bool>);
+    static_assert(noexcept(a1 == a2));
+  }
+  // equal same type (different resource)
+  {
+    TestResource d1(1);
+    TestResource d2(1);
+    A1 const a1(&d1);
+    A1 const a2(&d2);
+
+    assert(a1 == a2);
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    d1.reset();
+
+    assert(a2 == a1);
+    assert(d1.checkIsEqualCalledEq(0));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+  // equal same type (same resource)
+  {
+    TestResource d1;
+    A1 const a1(&d1);
+    A1 const a2(&d1);
+
+    assert(a1 == a2);
+    assert(d1.checkIsEqualCalledEq(0));
+
+    assert(a2 == a1);
+    assert(d1.checkIsEqualCalledEq(0));
+  }
+  // equal different type (different resource)
+  {
+    TestResource d1(42);
+    TestResource d2(42);
+    A1 const a1(&d1);
+    A2 const a2(&d2);
+
+    assert(a1 == a2);
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    assert(a2 == a1);
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+  // equal different type (same resource)
+  {
+    TestResource d1(42);
+    A1 const a1(&d1);
+    A2 const a2(&d1);
+
+    assert(a1 == a2);
+    assert(d1.checkIsEqualCalledEq(0));
+
+    assert(a2 == a1);
+    assert(d1.checkIsEqualCalledEq(0));
+  }
+  // not equal same type
+  {
+    TestResource d1(1);
+    TestResource d2(2);
+    A1 const a1(&d1);
+    A1 const a2(&d2);
+
+    assert(!(a1 == a2));
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    d1.reset();
+
+    assert(!(a2 == a1));
+    assert(d1.checkIsEqualCalledEq(0));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+  // not equal different types
+  {
+    TestResource d1;
+    TestResource1 d2;
+    A1 const a1(&d1);
+    A2 const a2(&d2);
+
+    assert(!(a1 == a2));
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    d1.reset();
+
+    assert(!(a2 == a1));
+    assert(d1.checkIsEqualCalledEq(0));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.eq/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.eq/not_equal.pass.cpp
new file mode 100644
index 0000000..96742fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.eq/not_equal.pass.cpp
@@ -0,0 +1,107 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator;
+
+// template <class T>
+// bool operator!=(
+//      polymorphic_allocator<T> const &
+//    , polymorphic_allocator<T> const &) noexcept
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> A1;
+  typedef std::pmr::polymorphic_allocator<int> A2;
+  // check return types
+  {
+    A1 const a1;
+    A2 const a2;
+    ASSERT_SAME_TYPE(decltype(a1 != a2), bool);
+    ASSERT_NOEXCEPT(a1 != a2);
+  }
+  // not equal same type (different resource)
+  {
+    TestResource d1(1);
+    TestResource d2(2);
+    A1 const a1(&d1);
+    A1 const a2(&d2);
+
+    assert(a1 != a2);
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    d1.reset();
+
+    assert(a2 != a1);
+    assert(d1.checkIsEqualCalledEq(0));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+  // equal same type (same resource)
+  {
+    TestResource d1;
+    A1 const a1(&d1);
+    A1 const a2(&d1);
+
+    assert(!(a1 != a2));
+    assert(d1.checkIsEqualCalledEq(0));
+
+    assert(!(a2 != a1));
+    assert(d1.checkIsEqualCalledEq(0));
+  }
+  // equal same type
+  {
+    TestResource d1(1);
+    TestResource d2(1);
+    A1 const a1(&d1);
+    A1 const a2(&d2);
+
+    assert(!(a1 != a2));
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    d1.reset();
+
+    assert(!(a2 != a1));
+    assert(d1.checkIsEqualCalledEq(0));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+  // not equal different types
+  {
+    TestResource d1;
+    TestResource1 d2;
+    A1 const a1(&d1);
+    A2 const a2(&d2);
+
+    assert(a1 != a2);
+    assert(d1.checkIsEqualCalledEq(1));
+    assert(d2.checkIsEqualCalledEq(0));
+
+    d1.reset();
+
+    assert(a2 != a1);
+    assert(d1.checkIsEqualCalledEq(0));
+    assert(d2.checkIsEqualCalledEq(1));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate.pass.cpp
new file mode 100644
index 0000000..ece7594
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::allocate(size_t n)
+
+#include <memory_resource>
+#include <cassert>
+#include <exception>
+#include <limits>
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+template <size_t S, size_t Align>
+void testForSizeAndAlign() {
+  struct T {
+    alignas(Align) std::byte buf[S];
+  };
+
+  TestResource R;
+  std::pmr::polymorphic_allocator<T> a(&R);
+
+  for (int N = 1; N <= 5; ++N) {
+    auto ret = a.allocate(N);
+    assert(R.checkAlloc(ret, N * sizeof(T), alignof(T)));
+
+    a.deallocate(ret, N);
+    R.reset();
+  }
+}
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+template <size_t S>
+void testAllocForSizeThrows() {
+  struct T {
+    std::byte buf[S];
+  };
+
+  using Alloc  = std::pmr::polymorphic_allocator<T>;
+  using Traits = std::allocator_traits<Alloc>;
+  NullResource R;
+  Alloc a(&R);
+
+  // Test that allocating exactly the max size does not throw.
+  size_t maxSize = Traits::max_size(a);
+  size_t sizeTypeMax = std::numeric_limits<std::size_t>::max();
+  if (maxSize != sizeTypeMax) {
+    // Test that allocating size_t(~0) throws bad alloc.
+    try {
+      (void)a.allocate(sizeTypeMax);
+      assert(false);
+    } catch (const std::exception&) {
+    }
+
+    // Test that allocating even one more than the max size does throw.
+    size_t overSize = maxSize + 1;
+    try {
+      (void)a.allocate(overSize);
+      assert(false);
+    } catch (const std::exception&) {
+    }
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+int main(int, char**) {
+  {
+    std::pmr::polymorphic_allocator<int> a;
+    ASSERT_SAME_TYPE(decltype(a.allocate(0)), int*);
+    static_assert(!noexcept(a.allocate(0)), "");
+  }
+  {
+    constexpr std::size_t MA = alignof(std::max_align_t);
+    testForSizeAndAlign<1, 1>();
+    testForSizeAndAlign<1, 2>();
+    testForSizeAndAlign<1, MA>();
+    testForSizeAndAlign<2, 2>();
+    testForSizeAndAlign<73, alignof(void*)>();
+    testForSizeAndAlign<73, MA>();
+    testForSizeAndAlign<13, MA>();
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    testAllocForSizeThrows<1>();
+    testAllocForSizeThrows<2>();
+    testAllocForSizeThrows<4>();
+    testAllocForSizeThrows<8>();
+    testAllocForSizeThrows<16>();
+    testAllocForSizeThrows<73>();
+    testAllocForSizeThrows<13>();
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_bytes.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_bytes.pass.cpp
new file mode 100644
index 0000000..a4db295
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_bytes.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// polymorphic_allocator::allocate_bytes()
+// polymorphic_allocator::deallocate_bytes()
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <memory_resource>
+
+#include "tracking_mem_res.h"
+
+template <class T>
+void test() {
+  size_t last_size      = 0;
+  size_t last_alignment = 0;
+  TrackingMemRes resource(&last_size, &last_alignment);
+
+  std::pmr::polymorphic_allocator<T> allocator(&resource);
+
+  {
+    std::same_as<void*> decltype(auto) allocation = allocator.allocate_bytes(13);
+    auto ptr                                      = static_cast<char*>(allocation);
+    std::fill(ptr, ptr + 13, '0');
+    assert(last_size == 13);
+    assert(last_alignment == alignof(max_align_t));
+    allocator.deallocate_bytes(allocation, 13);
+    assert(last_size == 13);
+    assert(last_alignment == alignof(max_align_t));
+  }
+  {
+    void* allocation = allocator.allocate_bytes(13, 64);
+    auto ptr         = static_cast<char*>(allocation);
+    std::fill(ptr, ptr + 13, '0');
+    assert(last_size == 13);
+    assert(last_alignment == 64);
+    allocator.deallocate_bytes(allocation, 13, 64);
+    assert(last_size == 13);
+    assert(last_alignment == 64);
+  }
+}
+
+struct S {};
+
+int main(int, char**) {
+  test<std::byte>();
+  test<S>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_object.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_object.pass.cpp
new file mode 100644
index 0000000..b061afb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_object.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// polymorphic_allocator::allocate_object()
+// polymorphic_allocator::deallocate_object()
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <memory_resource>
+
+#include "tracking_mem_res.h"
+
+template <class T>
+void test() {
+  size_t last_size      = 0;
+  size_t last_alignment = 0;
+  TrackingMemRes resource(&last_size, &last_alignment);
+
+  std::pmr::polymorphic_allocator<T> allocator(&resource);
+
+  {
+    std::same_as<int*> decltype(auto) allocation = allocator.template allocate_object<int>();
+    std::fill(allocation, allocation + 1, 3);
+    assert(last_size == sizeof(int));
+    assert(last_alignment == alignof(int));
+    allocator.deallocate_object(allocation);
+    assert(last_size == sizeof(int));
+    assert(last_alignment == alignof(int));
+  }
+  {
+    int* allocation = allocator.template allocate_object<int>(3);
+    std::fill(allocation, allocation + 3, 3);
+    assert(last_size == sizeof(int) * 3);
+    assert(last_alignment == alignof(int));
+    allocator.deallocate_object(allocation, 3);
+    assert(last_size == sizeof(int) * 3);
+    assert(last_alignment == alignof(int));
+  }
+}
+
+struct S {};
+
+int main(int, char**) {
+  test<std::byte>();
+  test<S>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_vocabulary.nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_vocabulary.nodiscard.verify.cpp
new file mode 100644
index 0000000..f3b0391
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/allocate_deallocate_vocabulary.nodiscard.verify.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// check that functions are marked [[nodiscard]]
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// polymorphic_allocator::allocate_bytes()
+// polymorphic_allocator::allocate_object()
+// polymorphic_allocator::new_object()
+
+#include <memory_resource>
+
+void func() {
+  std::pmr::polymorphic_allocator<> allocator;
+  allocator.allocate_bytes(1); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  allocator.allocate_object<int>(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+  allocator.new_object<int>(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair.pass.cpp
new file mode 100644
index 0000000..4f56b74
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*)
+
+#include <memory_resource>
+#include <cassert>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include "uses_alloc_types.h"
+
+int constructed = 0;
+
+struct default_constructible {
+  default_constructible() : x(42) { ++constructed; }
+  int x = 0;
+};
+
+int main(int, char**) {
+  // pair<default_constructible, default_constructible> as T()
+  {
+    typedef default_constructible T;
+    typedef std::pair<T, T> P;
+    typedef std::pmr::polymorphic_allocator<void> A;
+    alignas(P) char buffer[sizeof(P)];
+    P* ptr = reinterpret_cast<P*>(buffer);
+    A a;
+    a.construct(ptr);
+    assert(constructed == 2);
+    assert(ptr->first.x == 42);
+    assert(ptr->second.x == 42);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp
new file mode 100644
index 0000000..522f962
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp
@@ -0,0 +1,134 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class P1, class P2, class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<P1, P2>*, pair<U1, U2> const&)
+
+#include <memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+template <class UA1, class UA2, class TT, class UU>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect, std::pair<TT, UU> const& p) {
+  using P = std::pair<UA1, UA2>;
+  TestResource R;
+  std::pmr::memory_resource* M = &R;
+  std::pmr::polymorphic_allocator<P> A(M);
+  P* ptr  = (P*)std::malloc(sizeof(P));
+  P* ptr2 = (P*)std::malloc(sizeof(P));
+
+  // UNDER TEST //
+  A.construct(ptr, p);
+
+  A.construct(ptr2, std::piecewise_construct, std::forward_as_tuple(p.first), std::forward_as_tuple(p.second));
+  // ------- //
+
+  bool tres =
+      checkConstruct<decltype((p.first))>(ptr->first, TExpect, M) && checkConstructionEquiv(ptr->first, ptr2->first);
+
+  bool ures = checkConstruct<decltype((p.second))>(ptr->second, UExpect, M) &&
+              checkConstructionEquiv(ptr->second, ptr2->second);
+
+  A.destroy(ptr);
+  std::free(ptr);
+  A.destroy(ptr2);
+  std::free(ptr2);
+  return tres && ures;
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_uses_allocator(std::pair<TT, UU> const& p) {
+  {
+    using T = NotUsesAllocator<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, p)));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, 1>;
+    using U = UsesAllocatorV2<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, p)));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, 1>;
+    using U = UsesAllocatorV3<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, p)));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocArg, UA_None, p)));
+  }
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_not_uses_allocator(std::pair<TT, UU> const& p) {
+  {
+    using T = NotUsesAllocator<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, p)));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, 1>;
+    using U = UsesAllocatorV2<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, p)));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, 1>;
+    using U = UsesAllocatorV3<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, p)));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, p)));
+  }
+}
+
+template <class Tp>
+struct Print;
+
+int main(int, char**) {
+  using PMR = std::pmr::memory_resource*;
+  using PMA = std::pmr::polymorphic_allocator<char>;
+  {
+    int x = 42;
+    int y = 42;
+    const std::pair<int, int&> p(x, y);
+    test_pmr_not_uses_allocator<PMR>(p);
+    test_pmr_uses_allocator<PMA>(p);
+  }
+  {
+    int x = 42;
+    int y = 42;
+    const std::pair<int&, int&&> p(x, std::move(y));
+    test_pmr_not_uses_allocator<PMR>(p);
+    test_pmr_uses_allocator<PMA>(p);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_rvalue.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_rvalue.pass.cpp
new file mode 100644
index 0000000..00bb667
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_rvalue.pass.cpp
@@ -0,0 +1,131 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class P1, class P2, class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<P1, P2>*, pair<U1, U2> &&)
+
+#include <memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+template <class UA1, class UA2, class TT, class UU>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect, std::pair<TT, UU>&& p) {
+  using P = std::pair<UA1, UA2>;
+  TestResource R;
+  std::pmr::memory_resource* M = &R;
+  std::pmr::polymorphic_allocator<P> A(M);
+  P* ptr  = A.allocate(2);
+  P* ptr2 = ptr + 1;
+
+  // UNDER TEST //
+  A.construct(ptr, std::move(p));
+
+  A.construct(ptr2,
+              std::piecewise_construct,
+              std::forward_as_tuple(std::forward<TT>(p.first)),
+              std::forward_as_tuple(std::forward<UU>(p.second)));
+  // ------- //
+
+  bool tres = checkConstruct<TT&&>(ptr->first, TExpect, M) && checkConstructionEquiv(ptr->first, ptr2->first);
+
+  bool ures = checkConstruct<UU&&>(ptr->second, UExpect, M) && checkConstructionEquiv(ptr->second, ptr2->second);
+
+  A.destroy(ptr);
+  A.destroy(ptr2);
+  A.deallocate(ptr, 2);
+  return tres && ures;
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_uses_allocator(std::pair<TT, UU>&& p) {
+  {
+    using T = NotUsesAllocator<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, 1>;
+    using U = UsesAllocatorV2<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, std::move(p))));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, 1>;
+    using U = UsesAllocatorV3<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, std::move(p))));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocArg, UA_None, std::move(p))));
+  }
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_not_uses_allocator(std::pair<TT, UU>&& p) {
+  {
+    using T = NotUsesAllocator<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, 1>;
+    using U = UsesAllocatorV2<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, 1>;
+    using U = UsesAllocatorV3<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(p))));
+  }
+}
+
+int main(int, char**) {
+  using PMR = std::pmr::memory_resource*;
+  using PMA = std::pmr::polymorphic_allocator<char>;
+  {
+    int x = 42;
+    int y = 42;
+    std::pair<int&, int&&> p(x, std::move(y));
+    test_pmr_not_uses_allocator<PMR>(std::move(p));
+    test_pmr_uses_allocator<PMA>(std::move(p));
+  }
+  {
+    int x = 42;
+    int y = 42;
+    std::pair<int&&, int&> p(std::move(x), y);
+    test_pmr_not_uses_allocator<PMR>(std::move(p));
+    test_pmr_uses_allocator<PMA>(std::move(p));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_values.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_values.pass.cpp
new file mode 100644
index 0000000..6d39a7e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_values.pass.cpp
@@ -0,0 +1,129 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class P1, class P2, class U1, class U2>
+// void polymorphic_allocator<T>::construct(pair<P1, P2>*, U1&&, U2&&)
+
+#include <memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+template <class UA1, class UA2, class TT, class UU>
+bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect, TT&& t, UU&& u) {
+  using P = std::pair<UA1, UA2>;
+  TestResource R;
+  std::pmr::memory_resource* M = &R;
+  std::pmr::polymorphic_allocator<P> A(M);
+  P* ptr  = (P*)std::malloc(sizeof(P));
+  P* ptr2 = (P*)std::malloc(sizeof(P));
+
+  // UNDER TEST //
+  A.construct(ptr, std::forward<TT>(t), std::forward<UU>(u));
+  A.construct(ptr2,
+              std::piecewise_construct,
+              std::forward_as_tuple(std::forward<TT>(t)),
+              std::forward_as_tuple(std::forward<UU>(u)));
+  // ------- //
+
+  bool tres = checkConstruct<TT&&>(ptr->first, TExpect, M) && checkConstructionEquiv(ptr->first, ptr2->first);
+
+  bool ures = checkConstruct<UU&&>(ptr->second, UExpect, M) && checkConstructionEquiv(ptr->second, ptr2->second);
+
+  A.destroy(ptr);
+  A.destroy(ptr2);
+  std::free(ptr);
+  std::free(ptr2);
+  return tres && ures;
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_uses_allocator(TT&& t, UU&& u) {
+  {
+    using T = NotUsesAllocator<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, 1>;
+    using U = UsesAllocatorV2<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, 1>;
+    using U = UsesAllocatorV3<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_AllocArg, UA_None, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+}
+
+template <class Alloc, class TT, class UU>
+void test_pmr_not_uses_allocator(TT&& t, UU&& u) {
+  {
+    using T = NotUsesAllocator<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, 1>;
+    using U = UsesAllocatorV2<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, 1>;
+    using U = UsesAllocatorV3<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, 1>;
+    using U = NotUsesAllocator<Alloc, 1>;
+    assert((doTest<T, U>(UA_None, UA_None, std::forward<TT>(t), std::forward<UU>(u))));
+  }
+}
+
+int main(int, char**) {
+  using PMR = std::pmr::memory_resource*;
+  using PMA = std::pmr::polymorphic_allocator<char>;
+  {
+    int x = 42;
+    int y = 42;
+    test_pmr_not_uses_allocator<PMR>(x, std::move(y));
+    test_pmr_uses_allocator<PMA>(x, std::move(y));
+  }
+  {
+    int x       = 42;
+    const int y = 42;
+    test_pmr_not_uses_allocator<PMR>(std::move(x), y);
+    test_pmr_uses_allocator<PMA>(std::move(x), y);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair.pass.cpp
new file mode 100644
index 0000000..619c554
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair.pass.cpp
@@ -0,0 +1,146 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*, piecewise_construct_t
+//                                          tuple<Args1...>, tuple<Args2...>)
+
+#include <memory_resource>
+#include <type_traits>
+#include <utility>
+#include <tuple>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+template <class T, class U, class... TTuple, class... UTuple>
+bool doTest(
+    UsesAllocatorType TExpect, UsesAllocatorType UExpect, std::tuple<TTuple...> ttuple, std::tuple<UTuple...> utuple) {
+  using P = std::pair<T, U>;
+  TestResource R;
+  std::pmr::memory_resource* M = &R;
+  std::pmr::polymorphic_allocator<P> A(M);
+  P* ptr = A.allocate(1);
+
+  // UNDER TEST //
+  A.construct(ptr, std::piecewise_construct, std::move(ttuple), std::move(utuple));
+  // ------- //
+  bool tres = checkConstruct<TTuple&&...>(ptr->first, TExpect, M);
+  bool ures = checkConstruct<UTuple&&...>(ptr->second, UExpect, M);
+
+  A.destroy(ptr);
+  A.deallocate(ptr, 1);
+  return tres && ures;
+}
+
+template <class Alloc, class... TTypes, class... UTypes>
+void test_pmr_uses_allocator(std::tuple<TTypes...> ttuple, std::tuple<UTypes...> utuple) {
+  {
+    using T = NotUsesAllocator<Alloc, sizeof...(TTypes)>;
+    using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(ttuple), std::move(utuple))));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, sizeof...(TTypes)>;
+    using U = UsesAllocatorV2<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, std::move(ttuple), std::move(utuple))));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, sizeof...(TTypes)>;
+    using U = UsesAllocatorV3<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, std::move(ttuple), std::move(utuple))));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, sizeof...(TTypes)>;
+    using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_AllocArg, UA_None, std::move(ttuple), std::move(utuple))));
+  }
+}
+
+template <class Alloc, class... TTypes, class... UTypes>
+void test_pmr_not_uses_allocator(std::tuple<TTypes...> ttuple, std::tuple<UTypes...> utuple) {
+  {
+    using T = NotUsesAllocator<Alloc, sizeof...(TTypes)>;
+    using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(ttuple), std::move(utuple))));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, sizeof...(TTypes)>;
+    using U = UsesAllocatorV2<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(ttuple), std::move(utuple))));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, sizeof...(TTypes)>;
+    using U = UsesAllocatorV3<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(ttuple), std::move(utuple))));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, sizeof...(TTypes)>;
+    using U = NotUsesAllocator<Alloc, sizeof...(UTypes)>;
+    assert((doTest<T, U>(UA_None, UA_None, std::move(ttuple), std::move(utuple))));
+  }
+}
+
+int main(int, char**) {
+  using PMR = std::pmr::memory_resource*;
+  using PMA = std::pmr::polymorphic_allocator<char>;
+  {
+    std::tuple<> t1;
+    test_pmr_not_uses_allocator<PMR>(t1, t1);
+    test_pmr_uses_allocator<PMA>(t1, t1);
+  }
+  {
+    std::tuple<int> t1(42);
+    std::tuple<> t2;
+    test_pmr_not_uses_allocator<PMR>(t1, t2);
+    test_pmr_not_uses_allocator<PMR>(t2, t1);
+    test_pmr_uses_allocator<PMA>(t1, t2);
+    test_pmr_uses_allocator<PMA>(t2, t1);
+  }
+  {
+    std::tuple<int> t1(42);
+    int x     = 55;
+    double dx = 42.42;
+    std::tuple<int&, double&&> t2(x, std::move(dx));
+    test_pmr_not_uses_allocator<PMR>(t1, std::move(t2));
+    test_pmr_not_uses_allocator<PMR>(std::move(t2), t1);
+    test_pmr_uses_allocator<PMA>(t1, std::move(t2));
+    test_pmr_uses_allocator<PMA>(std::move(t2), t1);
+  }
+  {
+    void* xptr = nullptr;
+    long y     = 4242;
+    std::tuple<int, long const&, void*&> t1(42, y, xptr);
+    int x         = 55;
+    double dx     = 42.42;
+    const char* s = "hello World";
+    std::tuple<int&, double&&, const char*> t2(x, std::move(dx), s);
+    test_pmr_not_uses_allocator<PMR>(t1, std::move(t2));
+    test_pmr_not_uses_allocator<PMR>(std::move(t2), t1);
+    test_pmr_uses_allocator<PMA>(t1, std::move(t2));
+    test_pmr_uses_allocator<PMA>(std::move(t2), t1);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair_evil.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair_evil.pass.cpp
new file mode 100644
index 0000000..30b4374
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_piecewise_pair_evil.pass.cpp
@@ -0,0 +1,135 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U1, class U2, class ...Args1, class ...Args2>
+// void polymorphic_allocator<T>::construct(pair<U1, U2>*, piecewise_construct_t
+//                                          tuple<Args1...>, tuple<Args2...>)
+
+#include <memory_resource>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+struct EvilAlloc {
+  explicit EvilAlloc() : inner_(std::pmr::null_memory_resource()) {}
+
+  EvilAlloc(std::pmr::polymorphic_allocator<T>& a) : inner_(a) {}
+  EvilAlloc(std::pmr::polymorphic_allocator<T>&& a) : inner_(a) {}
+  EvilAlloc(std::pmr::polymorphic_allocator<T> const& a)  = delete;
+  EvilAlloc(std::pmr::polymorphic_allocator<T> const&& a) = delete;
+
+  using value_type = T;
+  template <class U>
+  EvilAlloc(EvilAlloc<U> const& rhs) : inner_(rhs.inner_) {}
+
+  std::pmr::polymorphic_allocator<T> inner_;
+};
+
+struct WidgetV0 {
+  WidgetV0(int v) : value_(v) {}
+
+  bool holds(int v, const std::pmr::polymorphic_allocator<char>&) const { return value_ == v; }
+
+private:
+  int value_;
+};
+
+struct WidgetV1 {
+  using allocator_type = EvilAlloc<char>;
+
+  WidgetV1(int v) : value_(v), alloc_() {}
+  WidgetV1(std::allocator_arg_t, EvilAlloc<char> a, int v) : value_(v), alloc_(a) {}
+
+  bool holds(int v, const std::pmr::polymorphic_allocator<char>& a) const { return value_ == v && alloc_.inner_ == a; }
+
+private:
+  int value_;
+  EvilAlloc<char> alloc_;
+};
+
+struct WidgetV2 {
+  using allocator_type = EvilAlloc<char>;
+
+  WidgetV2(int v) : value_(v), alloc_() {}
+  WidgetV2(int v, EvilAlloc<char> a) : value_(v), alloc_(a) {}
+
+  bool holds(int v, std::pmr::polymorphic_allocator<char> a) const { return value_ == v && alloc_.inner_ == a; }
+
+private:
+  int value_;
+  EvilAlloc<char> alloc_;
+};
+
+struct WidgetV3 {
+  using allocator_type = EvilAlloc<char>;
+
+  WidgetV3(int v) : value_(v), alloc_() {}
+  WidgetV3(std::allocator_arg_t, EvilAlloc<char> a, int v) : value_(v), alloc_(a) {}
+  WidgetV3(int v, EvilAlloc<char> a) : value_(v), alloc_(a) {}
+
+  bool holds(int v, std::pmr::polymorphic_allocator<char> a) const { return value_ == v && alloc_.inner_ == a; }
+
+private:
+  int value_;
+  EvilAlloc<char> alloc_;
+};
+
+static_assert(std::uses_allocator<WidgetV1, EvilAlloc<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV2, EvilAlloc<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV3, EvilAlloc<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV1, std::pmr::polymorphic_allocator<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV2, std::pmr::polymorphic_allocator<char>>::value, "");
+static_assert(std::uses_allocator<WidgetV3, std::pmr::polymorphic_allocator<char>>::value, "");
+
+template <class W1, class W2>
+void test_evil() {
+  using PMA = std::pmr::polymorphic_allocator<char>;
+  PMA pma(std::pmr::new_delete_resource());
+  {
+    using Pair  = std::pair<W1, W2>;
+    alignas(Pair) char buffer[sizeof(Pair)];
+    Pair* p = reinterpret_cast<Pair*>(buffer);
+    pma.construct(p, std::piecewise_construct, std::make_tuple(42), std::make_tuple(42));
+    assert(p->first.holds(42, pma));
+    assert(p->second.holds(42, pma));
+    pma.destroy(p);
+  }
+}
+
+int main(int, char**) {
+  test_evil<WidgetV0, WidgetV0>();
+  test_evil<WidgetV0, WidgetV1>();
+  test_evil<WidgetV0, WidgetV2>();
+  test_evil<WidgetV0, WidgetV3>();
+  test_evil<WidgetV1, WidgetV0>();
+  test_evil<WidgetV1, WidgetV1>();
+  test_evil<WidgetV1, WidgetV2>();
+  test_evil<WidgetV1, WidgetV3>();
+  test_evil<WidgetV2, WidgetV0>();
+  test_evil<WidgetV2, WidgetV1>();
+  test_evil<WidgetV2, WidgetV2>();
+  test_evil<WidgetV2, WidgetV3>();
+  test_evil<WidgetV3, WidgetV0>();
+  test_evil<WidgetV3, WidgetV1>();
+  test_evil<WidgetV3, WidgetV2>();
+  test_evil<WidgetV3, WidgetV3>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_types.pass.cpp
new file mode 100644
index 0000000..8b79616
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_types.pass.cpp
@@ -0,0 +1,186 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U, class ...Args>
+// void polymorphic_allocator<T>::construct(U *, Args &&...)
+
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+#include <cstdlib>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+#include "uses_alloc_types.h"
+#include "controlled_allocators.h"
+#include "test_allocator.h"
+
+template <class T>
+struct PMATest {
+  TestResource R;
+  std::pmr::polymorphic_allocator<T> A;
+  T* ptr;
+  bool constructed;
+
+  PMATest() : A(&R), ptr(A.allocate(1)), constructed(false) {}
+
+  template <class... Args>
+  void construct(Args&&... args) {
+    A.construct(ptr, std::forward<Args>(args)...);
+    constructed = true;
+  }
+
+  ~PMATest() {
+    if (constructed)
+      A.destroy(ptr);
+    A.deallocate(ptr, 1);
+  }
+};
+
+template <class T, class... Args>
+bool doTest(UsesAllocatorType UAExpect, Args&&... args) {
+  PMATest<T> TH;
+  // UNDER TEST //
+  TH.construct(std::forward<Args>(args)...);
+  return checkConstruct<Args&&...>(*TH.ptr, UAExpect, &TH.R);
+  // ------- //
+}
+
+template <class T, class... Args>
+bool doTestUsesAllocV0(Args&&... args) {
+  PMATest<T> TH;
+  // UNDER TEST //
+  TH.construct(std::forward<Args>(args)...);
+  return checkConstruct<Args&&...>(*TH.ptr, UA_None);
+  // -------- //
+}
+
+template <class T, class EAlloc, class... Args>
+bool doTestUsesAllocV1(EAlloc const& ealloc, Args&&... args) {
+  PMATest<T> TH;
+  // UNDER TEST //
+  TH.construct(std::allocator_arg, ealloc, std::forward<Args>(args)...);
+  return checkConstruct<Args&&...>(*TH.ptr, UA_AllocArg, ealloc);
+  // -------- //
+}
+
+template <class T, class EAlloc, class... Args>
+bool doTestUsesAllocV2(EAlloc const& ealloc, Args&&... args) {
+  PMATest<T> TH;
+  // UNDER TEST //
+  TH.construct(std::forward<Args>(args)..., ealloc);
+  return checkConstruct<Args&&...>(*TH.ptr, UA_AllocLast, ealloc);
+  // -------- //
+}
+
+template <class Alloc, class... Args>
+void test_pmr_uses_alloc(Args&&... args) {
+  TestResource R(12435);
+  std::pmr::memory_resource* M = &R;
+  {
+    // NotUsesAllocator provides valid signatures for each uses-allocator
+    // construction but does not supply the required allocator_type typedef.
+    // Test that we can call these constructors manually without
+    // polymorphic_allocator interfering.
+    using T = NotUsesAllocator<Alloc, sizeof...(Args)>;
+    assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+    assert((doTestUsesAllocV1<T>(M, std::forward<Args>(args)...)));
+    assert((doTestUsesAllocV2<T>(M, std::forward<Args>(args)...)));
+  }
+  {
+    // Test T(std::allocator_arg_t, Alloc const&, Args...) construction
+    using T = UsesAllocatorV1<Alloc, sizeof...(Args)>;
+    assert((doTest<T>(UA_AllocArg, std::forward<Args>(args)...)));
+  }
+  {
+    // Test T(Args..., Alloc const&) construction
+    using T = UsesAllocatorV2<Alloc, sizeof...(Args)>;
+    assert((doTest<T>(UA_AllocLast, std::forward<Args>(args)...)));
+  }
+  {
+    // Test that T(std::allocator_arg_t, Alloc const&, Args...) construction
+    // is preferred when T(Args..., Alloc const&) is also available.
+    using T = UsesAllocatorV3<Alloc, sizeof...(Args)>;
+    assert((doTest<T>(UA_AllocArg, std::forward<Args>(args)...)));
+  }
+}
+
+// Test that polymorphic_allocator does not prevent us from manually
+// doing non-pmr uses-allocator construction.
+template <class Alloc, class AllocObj, class... Args>
+void test_non_pmr_uses_alloc(AllocObj const& A, Args&&... args) {
+  {
+    using T = NotUsesAllocator<Alloc, sizeof...(Args)>;
+    assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+    assert((doTestUsesAllocV1<T>(A, std::forward<Args>(args)...)));
+    assert((doTestUsesAllocV2<T>(A, std::forward<Args>(args)...)));
+  }
+  {
+    using T = UsesAllocatorV1<Alloc, sizeof...(Args)>;
+    assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+    assert((doTestUsesAllocV1<T>(A, std::forward<Args>(args)...)));
+  }
+  {
+    using T = UsesAllocatorV2<Alloc, sizeof...(Args)>;
+    assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+    assert((doTestUsesAllocV2<T>(A, std::forward<Args>(args)...)));
+  }
+  {
+    using T = UsesAllocatorV3<Alloc, sizeof...(Args)>;
+    assert(doTestUsesAllocV0<T>(std::forward<Args>(args)...));
+    assert((doTestUsesAllocV1<T>(A, std::forward<Args>(args)...)));
+    assert((doTestUsesAllocV2<T>(A, std::forward<Args>(args)...)));
+  }
+}
+
+int main(int, char**) {
+  using PMR   = std::pmr::memory_resource*;
+  using PMA   = std::pmr::polymorphic_allocator<char>;
+  using STDA  = std::allocator<char>;
+  using TESTA = test_allocator<char>;
+
+  int value        = 42;
+  const int cvalue = 43;
+  {
+    test_pmr_uses_alloc<PMA>();
+    test_pmr_uses_alloc<PMA>(value);
+    test_pmr_uses_alloc<PMA>(cvalue);
+    test_pmr_uses_alloc<PMA>(cvalue, std::move(value));
+  }
+  {
+    STDA std_alloc;
+    TESTA test_alloc(42);
+    PMR mem_res = std::pmr::new_delete_resource();
+
+    test_non_pmr_uses_alloc<PMR>(mem_res);
+    test_non_pmr_uses_alloc<STDA>(std_alloc);
+    test_non_pmr_uses_alloc<TESTA>(test_alloc);
+    test_non_pmr_uses_alloc<PMR>(mem_res, value);
+    test_non_pmr_uses_alloc<STDA>(std_alloc, value);
+    test_non_pmr_uses_alloc<TESTA>(test_alloc, value);
+    test_non_pmr_uses_alloc<PMR>(mem_res, cvalue);
+    test_non_pmr_uses_alloc<STDA>(std_alloc, cvalue);
+    test_non_pmr_uses_alloc<TESTA>(test_alloc, cvalue);
+    test_non_pmr_uses_alloc<PMR>(mem_res, cvalue, std::move(cvalue));
+    test_non_pmr_uses_alloc<STDA>(std_alloc, cvalue, std::move(value));
+    test_non_pmr_uses_alloc<TESTA>(test_alloc, cvalue, std::move(value));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/deallocate.pass.cpp
new file mode 100644
index 0000000..e7884c9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/deallocate.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// T* polymorphic_allocator<T>::deallocate(T*, size_t size)
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+template <size_t S, size_t Align>
+void testForSizeAndAlign() {
+  struct T {
+    alignas(Align) std::byte buf[S];
+  };
+
+  TestResource R;
+  std::pmr::polymorphic_allocator<T> a(&R);
+
+  for (int N = 1; N <= 5; ++N) {
+    auto ret = a.allocate(N);
+    assert(R.checkAlloc(ret, N * sizeof(T), alignof(T)));
+
+    a.deallocate(ret, N);
+    assert(R.checkDealloc(ret, N * sizeof(T), alignof(T)));
+
+    R.reset();
+  }
+}
+
+int main(int, char**) {
+  {
+    std::pmr::polymorphic_allocator<int> a;
+    ASSERT_SAME_TYPE(decltype(a.deallocate(nullptr, 0)), void);
+  }
+  {
+    constexpr std::size_t MA = alignof(std::max_align_t);
+    testForSizeAndAlign<1, 1>();
+    testForSizeAndAlign<1, 2>();
+    testForSizeAndAlign<1, MA>();
+    testForSizeAndAlign<2, 2>();
+    testForSizeAndAlign<73, alignof(void*)>();
+    testForSizeAndAlign<73, MA>();
+    testForSizeAndAlign<13, MA>();
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/default_type.compile.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/default_type.compile.pass.cpp
new file mode 100644
index 0000000..67d552c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/default_type.compile.pass.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// UNSUPPORTED: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+#include <memory_resource>
+#include <type_traits>
+
+static_assert(std::is_same_v<std::pmr::polymorphic_allocator<>, std::pmr::polymorphic_allocator<std::byte>>);
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/destroy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/destroy.pass.cpp
new file mode 100644
index 0000000..985dda2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/destroy.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// template <class U>
+// void polymorphic_allocator<T>::destroy(U * ptr);
+
+#include <memory_resource>
+#include <cassert>
+#include <new>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int count = 0;
+
+struct destroyable {
+  destroyable() { ++count; }
+  ~destroyable() { --count; }
+};
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<double> A;
+  {
+    A a;
+    ASSERT_SAME_TYPE(decltype(a.destroy((destroyable*)nullptr)), void);
+  }
+  {
+    alignas(destroyable) char buffer[sizeof(destroyable)];
+    destroyable* ptr = ::new (buffer) destroyable();
+    assert(count == 1);
+    A{}.destroy(ptr);
+    assert(count == 0);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/new_delete_object.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/new_delete_object.pass.cpp
new file mode 100644
index 0000000..463a815
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/new_delete_object.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// polymorphic_allocator::new_object()
+// polymorphic_allocator::delete_object()
+
+#include <algorithm>
+#include <cassert>
+#include <concepts>
+#include <memory_resource>
+
+#include "tracking_mem_res.h"
+
+template <class T>
+void test() {
+  size_t last_size      = 0;
+  size_t last_alignment = 0;
+  TrackingMemRes resource(&last_size, &last_alignment);
+
+  std::pmr::polymorphic_allocator<T> allocator(&resource);
+
+  {
+    std::same_as<int*> decltype(auto) allocation = allocator.template new_object<int>();
+    std::fill(allocation, allocation + 1, 4);
+    assert(last_size == sizeof(int));
+    assert(last_alignment == alignof(int));
+    allocator.delete_object(allocation);
+  }
+  {
+    std::same_as<int*> decltype(auto) allocation = allocator.template new_object<int>(3);
+    assert(*allocation == 3);
+    std::fill(allocation, allocation + 1, 4);
+    assert(last_size == sizeof(int));
+    assert(last_alignment == alignof(int));
+    allocator.delete_object(allocation);
+  }
+  {
+    struct TrackConstruction {
+      bool* is_constructed_;
+      TrackConstruction(bool* is_constructed) : is_constructed_(is_constructed) { *is_constructed = true; }
+      ~TrackConstruction() { *is_constructed_ = false; }
+    };
+
+    bool is_constructed = false;
+
+    std::same_as<TrackConstruction*> decltype(auto) allocation =
+        allocator.template new_object<TrackConstruction>(&is_constructed);
+    assert(is_constructed);
+    assert(last_size == sizeof(TrackConstruction));
+    assert(last_alignment == alignof(TrackConstruction));
+    allocator.delete_object(allocation);
+    assert(!is_constructed);
+  }
+}
+
+struct S {};
+
+int main(int, char**) {
+  test<std::byte>();
+  test<S>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/resource.pass.cpp
new file mode 100644
index 0000000..a6ed1f5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/resource.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// memory_resource *
+// polymorphic_allocator<T>::resource() const
+
+#include <memory_resource>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> A;
+  {
+    A const a;
+    ASSERT_SAME_TYPE(decltype(a.resource()), std::pmr::memory_resource*);
+  }
+  {
+    std::pmr::memory_resource* mptr = (std::pmr::memory_resource*)42;
+    A const a(mptr);
+    assert(a.resource() == mptr);
+  }
+  {
+    A const a(nullptr);
+    assert(a.resource() == nullptr);
+    assert(a.resource() == nullptr);
+  }
+  {
+    A const a;
+    assert(a.resource() == std::pmr::get_default_resource());
+  }
+  {
+    std::pmr::memory_resource* mptr = (std::pmr::memory_resource*)42;
+    std::pmr::set_default_resource(mptr);
+    A const a;
+    assert(a.resource() == mptr);
+    assert(a.resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/select_on_container_copy_construction.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/select_on_container_copy_construction.pass.cpp
new file mode 100644
index 0000000..5b2551e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/select_on_container_copy_construction.pass.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// template <class T> class polymorphic_allocator
+
+// polymorphic_allocator
+// polymorphic_allocator<T>::select_on_container_copy_construction() const
+
+#include <memory_resource>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  typedef std::pmr::polymorphic_allocator<void> A;
+  {
+    A const a;
+    ASSERT_SAME_TYPE(decltype(a.select_on_container_copy_construction()), A);
+  }
+  {
+    std::pmr::memory_resource* mptr = (std::pmr::memory_resource*)42;
+    A const a(mptr);
+    assert(a.resource() == mptr);
+    A const other = a.select_on_container_copy_construction();
+    assert(other.resource() == std::pmr::get_default_resource());
+    assert(a.resource() == mptr);
+  }
+  {
+    std::pmr::memory_resource* mptr = (std::pmr::memory_resource*)42;
+    std::pmr::set_default_resource(mptr);
+    A const a(nullptr);
+    assert(a.resource() == nullptr);
+    A const other = a.select_on_container_copy_construction();
+    assert(other.resource() == std::pmr::get_default_resource());
+    assert(other.resource() == mptr);
+    assert(a.resource() == nullptr);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/tracking_mem_res.h b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/tracking_mem_res.h
new file mode 100644
index 0000000..d0b9eab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/tracking_mem_res.h
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TRACKING_MEM_RES_H
+#define TRACKING_MEM_RES_H
+
+#include <memory_resource>
+
+class TrackingMemRes : public std::pmr::memory_resource {
+public:
+  TrackingMemRes(size_t* last_size, size_t* last_alginment) : last_size_(last_size), last_alginment_(last_alginment) {}
+
+private:
+  size_t* last_size_;
+  size_t* last_alginment_;
+  void* do_allocate(size_t size, size_t alignment) override {
+    *last_size_      = size;
+    *last_alginment_ = alignment;
+
+    return std::pmr::new_delete_resource()->allocate(size, alignment);
+  }
+
+  void do_deallocate(void* ptr, size_t size, size_t alignment) override {
+    *last_size_      = size;
+    *last_alginment_ = alignment;
+    std::pmr::new_delete_resource()->deallocate(ptr, size, alignment);
+  }
+
+  bool do_is_equal(const memory_resource& ptr) const noexcept override { return &ptr == this; }
+};
+
+#endif // TRACKING_MEM_RES_H
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_deque_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_deque_synop.pass.cpp
new file mode 100644
index 0000000..3fe8a45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_deque_synop.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <deque>
+
+// namespace std::pmr {
+// template <class T>
+// using deque =
+//     ::std::deque<T, polymorphic_allocator<T>>
+//
+// } // namespace std::pmr
+
+#include <deque>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  using StdDeque = std::deque<int, std::pmr::polymorphic_allocator<int>>;
+  using PmrDeque = std::pmr::deque<int>;
+  static_assert(std::is_same<StdDeque, PmrDeque>::value, "");
+  PmrDeque d;
+  assert(d.get_allocator().resource() == std::pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_deque_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_deque_synop2.pass.cpp
new file mode 100644
index 0000000..e96b21e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_deque_synop2.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <deque>
+
+// namespace std::pmr {
+//
+// typedef ... deque
+//
+// } // namespace std::pmr
+
+#include <deque>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::deque is usable without <memory_resource>.
+    std::pmr::deque<int> d;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_forward_list_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_forward_list_synop.pass.cpp
new file mode 100644
index 0000000..2a09354
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_forward_list_synop.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <forward_list>
+
+// namespace std::pmr {
+// template <class T>
+// using forward_list =
+//     ::std::forward_list<T, polymorphic_allocator<T>>
+//
+// } // namespace std::pmr
+
+#include <forward_list>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  using StdForwardList = std::forward_list<int, std::pmr::polymorphic_allocator<int>>;
+  using PmrForwardList = std::pmr::forward_list<int>;
+  static_assert(std::is_same<StdForwardList, PmrForwardList>::value, "");
+  PmrForwardList d;
+  assert(d.get_allocator().resource() == std::pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_list_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_list_synop.pass.cpp
new file mode 100644
index 0000000..9adabd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_list_synop.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <list>
+
+// namespace std::pmr {
+// template <class T>
+// using list =
+//     ::std::list<T, polymorphic_allocator<T>>
+//
+// } // namespace std::pmr
+
+#include <list>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  using StdList = std::list<int, std::pmr::polymorphic_allocator<int>>;
+  using PmrList = std::pmr::list<int>;
+  static_assert(std::is_same<StdList, PmrList>::value, "");
+  PmrList d;
+  assert(d.get_allocator().resource() == std::pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_list_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_list_synop2.pass.cpp
new file mode 100644
index 0000000..fef4cb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_list_synop2.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <list>
+
+// namespace std::pmr {
+//
+// typedef ... list
+//
+// } // namespace std::pmr
+
+#include <list>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::list is usable without <memory_resource>.
+    std::pmr::list<int> l;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_map_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_map_synop.pass.cpp
new file mode 100644
index 0000000..0ba22fc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_map_synop.pass.cpp
@@ -0,0 +1,67 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <map>
+
+// namespace std::pmr {
+// template <class K, class V, class Compare = less<Key> >
+// using map =
+//     ::std::map<K, V, Compare, polymorphic_allocator<pair<const K, V>>>
+//
+// template <class K, class V, class Compare = less<Key> >
+// using multimap =
+//     ::std::multimap<K, V, Compare, polymorphic_allocator<pair<const K, V>>>
+//
+// } // namespace std::pmr
+
+#include <map>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  using K  = int;
+  using V  = char;
+  using DC = std::less<int>;
+  using OC = std::greater<int>;
+  using P  = std::pair<const K, V>;
+  {
+    using StdMap = std::map<K, V, DC, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::map<K, V>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    using StdMap = std::map<K, V, OC, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::map<K, V, OC>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    std::pmr::map<int, int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+  {
+    using StdMap = std::multimap<K, V, DC, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::multimap<K, V>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    using StdMap = std::multimap<K, V, OC, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::multimap<K, V, OC>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    std::pmr::multimap<int, int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_map_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_map_synop2.pass.cpp
new file mode 100644
index 0000000..452f922
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_map_synop2.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <map>
+
+// namespace std::pmr {
+//
+// typedef ... map
+//
+// } // namespace std::pmr
+
+#include <map>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::map is usable without <memory_resource>.
+    std::pmr::map<int, int> m;
+    std::pmr::multimap<int, int> mm;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_regex_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_regex_synop.pass.cpp
new file mode 100644
index 0000000..1414108
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_regex_synop.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-localization
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <regex>
+
+// namespace std::pmr {
+//
+//  template <class BidirectionalIterator>
+//  using match_results =
+//    std::match_results<BidirectionalIterator,
+//                       polymorphic_allocator<sub_match<BidirectionalIterator>>>;
+//
+//  typedef match_results<const char*> cmatch;
+//  typedef match_results<const wchar_t*> wcmatch;
+//  typedef match_results<string::const_iterator> smatch;
+//  typedef match_results<wstring::const_iterator> wsmatch;
+//
+// } // namespace std::pmr
+
+#include <regex>
+#include <cassert>
+#include <memory_resource>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class Iter, class PmrTypedef>
+void test_match_result_typedef() {
+  using StdMR = std::match_results<Iter, std::pmr::polymorphic_allocator<std::sub_match<Iter>>>;
+  using PmrMR = std::pmr::match_results<Iter>;
+  static_assert(std::is_same<StdMR, PmrMR>::value, "");
+  static_assert(std::is_same<PmrMR, PmrTypedef>::value, "");
+}
+
+int main(int, char**) {
+  {
+    test_match_result_typedef<const char*, std::pmr::cmatch>();
+    test_match_result_typedef<std::pmr::string::const_iterator, std::pmr::smatch>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_match_result_typedef<const wchar_t*, std::pmr::wcmatch>();
+    test_match_result_typedef<std::pmr::wstring::const_iterator, std::pmr::wsmatch>();
+#endif
+  }
+  {
+    // Check that std::match_results has been included and is complete.
+    std::pmr::smatch s;
+    assert(s.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop.pass.cpp
new file mode 100644
index 0000000..7b0a6aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop.pass.cpp
@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <set>
+
+// namespace std::pmr {
+// template <class V, class Compare = less<V> >
+// using set =
+//     ::std::set<V, Compare, polymorphic_allocator<V>>
+//
+// template <class V, class Compare = less<V> >
+// using multiset =
+//     ::std::multiset<V, Compare, polymorphic_allocator<V>>
+//
+// } // namespace std::pmr
+
+#include <set>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  using V  = char;
+  using DC = std::less<V>;
+  using OC = std::greater<V>;
+  {
+    using StdSet = std::set<V, DC, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::set<V>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    using StdSet = std::set<V, OC, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::set<V, OC>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    std::pmr::set<int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+  {
+    using StdSet = std::multiset<V, DC, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::multiset<V>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    using StdSet = std::multiset<V, OC, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::multiset<V, OC>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    std::pmr::multiset<int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop2.pass.cpp
new file mode 100644
index 0000000..b63677e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_set_synop2.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <set>
+
+// namespace std::pmr {
+//
+// typedef ... set
+//
+// } // namespace std::pmr
+
+#include <set>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::set is usable without <memory_resource>.
+    std::pmr::set<int> s;
+    std::pmr::multiset<int> ms;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_string_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_string_synop.pass.cpp
new file mode 100644
index 0000000..9ae4b67
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_string_synop.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <string>
+
+// namespace std::pmr {
+// template <class Char, class Traits = ...>
+// using basic_string =
+//     ::std::basic_string<Char, Traits, polymorphic_allocator<Char>>
+//
+// typedef ... string
+// typedef ... u16string
+// typedef ... u32string
+// typedef ... wstring
+//
+// } // namespace std::pmr
+
+#include <string>
+#include <cassert>
+#include <memory_resource>
+#include <type_traits>
+
+#include "constexpr_char_traits.h"
+#include "test_macros.h"
+
+template <class Char, class PmrTypedef>
+void test_string_typedef() {
+  using StdStr = std::basic_string<Char, std::char_traits<Char>, std::pmr::polymorphic_allocator<Char>>;
+  using PmrStr = std::pmr::basic_string<Char>;
+  static_assert(std::is_same<StdStr, PmrStr>::value, "");
+  static_assert(std::is_same<PmrStr, PmrTypedef>::value, "");
+}
+
+template <class Char, class Traits>
+void test_basic_string_alias() {
+  using StdStr = std::basic_string<Char, Traits, std::pmr::polymorphic_allocator<Char>>;
+  using PmrStr = std::pmr::basic_string<Char, Traits>;
+  static_assert(std::is_same<StdStr, PmrStr>::value, "");
+}
+
+int main(int, char**) {
+  {
+    test_string_typedef<char, std::pmr::string>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_string_typedef<wchar_t, std::pmr::wstring>();
+#endif
+    test_string_typedef<char16_t, std::pmr::u16string>();
+    test_string_typedef<char32_t, std::pmr::u32string>();
+  }
+  {
+    test_basic_string_alias<char, constexpr_char_traits<char>>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    test_basic_string_alias<wchar_t, constexpr_char_traits<wchar_t>>();
+#endif
+    test_basic_string_alias<char16_t, constexpr_char_traits<char16_t>>();
+    test_basic_string_alias<char32_t, constexpr_char_traits<char32_t>>();
+  }
+  {
+    // Check that std::basic_string has been included and is complete.
+    std::pmr::string s;
+    assert(s.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_string_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_string_synop2.pass.cpp
new file mode 100644
index 0000000..2f70806
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_string_synop2.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <string>
+
+// namespace std::pmr {
+//
+// typedef ... string
+// typedef ... u16string
+// typedef ... u32string
+// typedef ... wstring
+//
+// } // namespace std::pmr
+
+#include <string>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::string is usable without <memory_resource>.
+    std::pmr::string s;
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::pmr::wstring ws;
+#endif
+    std::pmr::u16string u16s;
+    std::pmr::u32string u32s;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop.pass.cpp
new file mode 100644
index 0000000..0f660b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <unordered_map>
+
+// namespace std::pmr {
+// template <class K, class V, class H = hash<K>, class P = equal_to<K> >
+// using unordered_map =
+//     ::std::unordered_map<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
+//
+// template <class K, class V,  class H = hash<K>, class P = equal_to<K> >
+// using unordered_multimap =
+//     ::std::unordered_multimap<K, V, H, P, polymorphic_allocator<pair<const K, V>>>
+//
+// } // namespace std::pmr
+
+#include <unordered_map>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+template <class T>
+struct MyHash : std::hash<T> {};
+
+template <class T>
+struct MyPred : std::equal_to<T> {};
+
+int main(int, char**) {
+  using K  = int;
+  using V  = char;
+  using DH = std::hash<K>;
+  using MH = MyHash<K>;
+  using DP = std::equal_to<K>;
+  using MP = MyPred<K>;
+  using P  = std::pair<const K, V>;
+  {
+    using StdMap = std::unordered_map<K, V, DH, DP, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::unordered_map<K, V>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    using StdMap = std::unordered_map<K, V, MH, DP, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::unordered_map<K, V, MH>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    using StdMap = std::unordered_map<K, V, MH, MP, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::unordered_map<K, V, MH, MP>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    std::pmr::unordered_map<int, int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+  {
+    using StdMap = std::unordered_multimap<K, V, DH, DP, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::unordered_multimap<K, V>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    using StdMap = std::unordered_multimap<K, V, MH, DP, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::unordered_multimap<K, V, MH>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    using StdMap = std::unordered_multimap<K, V, MH, MP, std::pmr::polymorphic_allocator<P>>;
+    using PmrMap = std::pmr::unordered_multimap<K, V, MH, MP>;
+    static_assert(std::is_same<StdMap, PmrMap>::value, "");
+  }
+  {
+    std::pmr::unordered_multimap<int, int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop2.pass.cpp
new file mode 100644
index 0000000..8117539
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_map_synop2.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <unordered_map>
+
+// namespace std::pmr {
+//
+// typedef ... unordered_map
+//
+// } // namespace std::pmr
+
+#include <unordered_map>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::unordered_map is usable without <memory_resource>.
+    std::pmr::unordered_map<int, int> m;
+    std::pmr::unordered_multimap<int, int> mm;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_set_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_set_synop.pass.cpp
new file mode 100644
index 0000000..7f34fb2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_set_synop.pass.cpp
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <unordered_set>
+
+// namespace std::pmr {
+// template <class V, class H = hash<V>, class P = equal_to<V> >
+// using unordered_set =
+//     ::std::unordered_set<V, H, P, polymorphic_allocator<V>>
+//
+// template <class V,  class H = hash<V>, class P = equal_to<V> >
+// using unordered_multiset =
+//     ::std::unordered_multiset<V, H, P, polymorphic_allocator<V>>
+//
+// } // namespace std::pmr
+
+#include <unordered_set>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+template <class T>
+struct MyHash : std::hash<T> {};
+
+template <class T>
+struct MyPred : std::equal_to<T> {};
+
+int main(int, char**) {
+  using V  = char;
+  using DH = std::hash<V>;
+  using MH = MyHash<V>;
+  using DP = std::equal_to<V>;
+  using MP = MyPred<V>;
+  {
+    using StdSet = std::unordered_set<V, DH, DP, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::unordered_set<V>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    using StdSet = std::unordered_set<V, MH, DP, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::unordered_set<V, MH>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    using StdSet = std::unordered_set<V, MH, MP, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::unordered_set<V, MH, MP>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    std::pmr::unordered_set<int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+  {
+    using StdSet = std::unordered_multiset<V, DH, DP, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::unordered_multiset<V>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    using StdSet = std::unordered_multiset<V, MH, DP, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::unordered_multiset<V, MH>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    using StdSet = std::unordered_multiset<V, MH, MP, std::pmr::polymorphic_allocator<V>>;
+    using PmrSet = std::pmr::unordered_multiset<V, MH, MP>;
+    static_assert(std::is_same<StdSet, PmrSet>::value, "");
+  }
+  {
+    std::pmr::unordered_multiset<int> m;
+    assert(m.get_allocator().resource() == std::pmr::get_default_resource());
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_set_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_set_synop2.pass.cpp
new file mode 100644
index 0000000..36cd6bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_unordered_set_synop2.pass.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <unordered_set>
+
+// namespace std::pmr {
+//
+// typedef ... unordered_set
+//
+// } // namespace std::pmr
+
+#include <unordered_set>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::unordered_set is usable without <memory_resource>.
+    std::pmr::unordered_set<int> s;
+    std::pmr::unordered_multiset<int> ms;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_vector_synop.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_vector_synop.pass.cpp
new file mode 100644
index 0000000..0caca07
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_vector_synop.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <vector>
+
+// namespace std::pmr {
+// template <class T>
+// using vector =
+//     ::std::vector<T, polymorphic_allocator<T>>
+//
+// } // namespace std::pmr
+
+#include <vector>
+#include <memory_resource>
+#include <type_traits>
+#include <cassert>
+
+int main(int, char**) {
+  using StdVector = std::vector<int, std::pmr::polymorphic_allocator<int>>;
+  using PmrVector = std::pmr::vector<int>;
+  static_assert(std::is_same<StdVector, PmrVector>::value, "");
+  PmrVector d;
+  assert(d.get_allocator().resource() == std::pmr::get_default_resource());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_vector_synop2.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_vector_synop2.pass.cpp
new file mode 100644
index 0000000..330f4be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.aliases/header_vector_synop2.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <vector>
+
+// namespace std::pmr {
+//
+// typedef ... vector
+//
+// } // namespace std::pmr
+
+#include <vector>
+
+int main(int, char**) {
+  {
+    // Check that std::pmr::vector is usable without <memory_resource>.
+    std::pmr::vector<int> l;
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/default_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/default_resource.pass.cpp
new file mode 100644
index 0000000..1c46f5b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/default_resource.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+//-----------------------------------------------------------------------------
+// TESTING memory_resource * get_default_resource() noexcept;
+//         memory_resource * set_default_resource(memory_resource*) noexcept;
+//
+// Concerns:
+//  A) 'get_default_resource()' returns a non-null memory_resource pointer.
+//  B) 'get_default_resource()' returns the value set by the last call to
+//     'set_default_resource(...)' and 'new_delete_resource()' if no call
+//     to 'set_default_resource(...)' has occurred.
+//  C) 'set_default_resource(...)' returns the previous value of the default
+//     resource.
+//  D) 'set_default_resource(T* p)' for a non-null 'p' sets the default resource
+//     to be 'p'.
+//  E) 'set_default_resource(null)' sets the default resource to
+//     'new_delete_resource()'.
+//  F) 'get_default_resource' and 'set_default_resource' are noexcept.
+
+#include <memory_resource>
+#include <cassert>
+
+#include "test_std_memory_resource.h"
+
+using namespace std::pmr;
+
+int main(int, char**) {
+  TestResource R;
+  { // Test (A) and (B)
+    memory_resource* p = get_default_resource();
+    assert(p != nullptr);
+    assert(p == new_delete_resource());
+    assert(p == get_default_resource());
+  }
+  { // Test (C) and (D)
+    memory_resource* expect = &R;
+    memory_resource* old    = set_default_resource(expect);
+    assert(old != nullptr);
+    assert(old == new_delete_resource());
+
+    memory_resource* p = get_default_resource();
+    assert(p != nullptr);
+    assert(p == expect);
+    assert(p == get_default_resource());
+  }
+  { // Test (E)
+    memory_resource* old = set_default_resource(nullptr);
+    assert(old == &R);
+    memory_resource* p = get_default_resource();
+    assert(p != nullptr);
+    assert(p == new_delete_resource());
+    assert(p == get_default_resource());
+  }
+  { // Test (F)
+    static_assert(noexcept(get_default_resource()), "get_default_resource() must be noexcept");
+
+    static_assert(noexcept(set_default_resource(nullptr)), "set_default_resource() must be noexcept");
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/new_delete_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/new_delete_resource.pass.cpp
new file mode 100644
index 0000000..bd8b8e9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/new_delete_resource.pass.cpp
@@ -0,0 +1,91 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// memory_resource *new_delete_resource()
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+class assert_on_compare : public std::pmr::memory_resource {
+  void* do_allocate(size_t, size_t) override {
+    assert(false);
+    return nullptr;
+  }
+
+  void do_deallocate(void*, size_t, size_t) override { assert(false); }
+
+  bool do_is_equal(const std::pmr::memory_resource&) const noexcept override {
+    assert(false);
+    return true;
+  }
+};
+
+void test_return() {
+  { ASSERT_SAME_TYPE(decltype(std::pmr::new_delete_resource()), std::pmr::memory_resource*); }
+  // assert not null
+  { assert(std::pmr::new_delete_resource()); }
+  // assert same return value
+  { assert(std::pmr::new_delete_resource() == std::pmr::new_delete_resource()); }
+}
+
+void test_equality() {
+  // Same object
+  {
+    std::pmr::memory_resource& r1 = *std::pmr::new_delete_resource();
+    std::pmr::memory_resource& r2 = *std::pmr::new_delete_resource();
+    // check both calls returned the same object
+    assert(&r1 == &r2);
+    // check for proper equality semantics
+    assert(r1 == r2);
+    assert(r2 == r1);
+    assert(!(r1 != r2));
+    assert(!(r2 != r1));
+  }
+  // Different types
+  {
+    std::pmr::memory_resource& r1 = *std::pmr::new_delete_resource();
+    assert_on_compare c;
+    std::pmr::memory_resource& r2 = c;
+    assert(r1 != r2);
+    assert(!(r1 == r2));
+  }
+}
+
+void test_allocate_deallocate() {
+  std::pmr::memory_resource& r1 = *std::pmr::new_delete_resource();
+
+  globalMemCounter.reset();
+
+  void* ret = r1.allocate(50);
+  assert(ret);
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkOutstandingNewEq(1));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewSizeEq(50));
+
+  r1.deallocate(ret, 1);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::pmr::new_delete_resource());
+  test_return();
+  test_equality();
+  test_allocate_deallocate();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/null_memory_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/null_memory_resource.pass.cpp
new file mode 100644
index 0000000..fdaa398
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.global/null_memory_resource.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// memory_resource *null_memory_resource()
+
+#include <memory_resource>
+#include <cassert>
+#include <cstddef> // size_t
+#include <new>
+#include <type_traits>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+struct assert_on_compare : public std::pmr::memory_resource {
+  void* do_allocate(size_t, size_t) override {
+    assert(false);
+    return nullptr;
+  }
+
+  void do_deallocate(void*, size_t, size_t) override { assert(false); }
+
+  bool do_is_equal(const std::pmr::memory_resource&) const noexcept override {
+    assert(false);
+    return true;
+  }
+};
+
+void test_return() {
+  { ASSERT_SAME_TYPE(decltype(std::pmr::null_memory_resource()), std::pmr::memory_resource*); }
+  // Test that the returned value is not null
+  { assert(std::pmr::null_memory_resource()); }
+  // Test the same value is returned by repeated calls.
+  { assert(std::pmr::null_memory_resource() == std::pmr::null_memory_resource()); }
+}
+
+void test_equality() {
+  // Same object
+  {
+    std::pmr::memory_resource& r1 = *std::pmr::null_memory_resource();
+    std::pmr::memory_resource& r2 = *std::pmr::null_memory_resource();
+    // check both calls returned the same object
+    assert(&r1 == &r2);
+    // check for proper equality semantics
+    assert(r1 == r2);
+    assert(r2 == r1);
+    assert(!(r1 != r2));
+    assert(!(r2 != r1));
+    // check the is_equal method
+    assert(r1.is_equal(r2));
+    assert(r2.is_equal(r1));
+  }
+  // Different types
+  {
+    std::pmr::memory_resource& r1 = *std::pmr::null_memory_resource();
+    assert_on_compare c;
+    std::pmr::memory_resource& r2 = c;
+    assert(r1 != r2);
+    assert(!(r1 == r2));
+    assert(!r1.is_equal(r2));
+  }
+}
+
+void test_allocate() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  DisableAllocationGuard g; // null_memory_resource shouldn't allocate.
+  try {
+    (void)std::pmr::null_memory_resource()->allocate(1);
+    assert(false);
+  } catch (std::bad_alloc const&) {
+    // do nothing
+  } catch (...) {
+    assert(false);
+  }
+#endif
+}
+
+void test_deallocate() {
+  globalMemCounter.reset();
+
+  int x = 42;
+  std::pmr::null_memory_resource()->deallocate(&x, 0);
+
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+  assert(globalMemCounter.checkDeleteArrayCalledEq(0));
+}
+
+int main(int, char**) {
+  test_return();
+  test_equality();
+  test_allocate();
+  test_deallocate();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/copy_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/copy_move.pass.cpp
new file mode 100644
index 0000000..053bd69
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/copy_move.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// monotonic_buffer_resource(monotonic_buffer_resource const&) = delete;
+// monotonic_buffer_resource& operator=(monotonic_buffer_resource const&) = delete;
+
+#include <memory_resource>
+#include <type_traits>
+
+int main(int, char**) {
+  using MBR = std::pmr::monotonic_buffer_resource;
+  static_assert(!std::is_copy_constructible_v<MBR>);
+  static_assert(!std::is_move_constructible_v<MBR>);
+  static_assert(!std::is_copy_assignable_v<MBR>);
+  static_assert(!std::is_move_assignable_v<MBR>);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/with_default_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/with_default_resource.pass.cpp
new file mode 100644
index 0000000..ff93f82
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/with_default_resource.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+int main(int, char**) {
+  std::pmr::memory_resource* expected = std::pmr::null_memory_resource();
+  std::pmr::set_default_resource(expected);
+  {
+    char buffer[16];
+    std::pmr::monotonic_buffer_resource r1;
+    std::pmr::monotonic_buffer_resource r2(16);
+    std::pmr::monotonic_buffer_resource r3(buffer, sizeof buffer);
+    assert(r1.upstream_resource() == expected);
+    assert(r2.upstream_resource() == expected);
+    assert(r3.upstream_resource() == expected);
+  }
+
+  expected = std::pmr::new_delete_resource();
+  std::pmr::set_default_resource(expected);
+  {
+    char buffer[16];
+    std::pmr::monotonic_buffer_resource r1;
+    std::pmr::monotonic_buffer_resource r2(16);
+    std::pmr::monotonic_buffer_resource r3(buffer, sizeof buffer);
+    assert(r1.upstream_resource() == expected);
+    assert(r2.upstream_resource() == expected);
+    assert(r3.upstream_resource() == expected);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/without_buffer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/without_buffer.pass.cpp
new file mode 100644
index 0000000..8adebb7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.ctor/without_buffer.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+
+int main(int, char**) {
+  // Constructing a monotonic_buffer_resource should not cause allocations
+  // by itself; the resource should wait to allocate until an allocation is
+  // requested.
+
+  globalMemCounter.reset();
+  std::pmr::set_default_resource(std::pmr::new_delete_resource());
+
+  std::pmr::monotonic_buffer_resource r1;
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  std::pmr::monotonic_buffer_resource r2(1024);
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  std::pmr::monotonic_buffer_resource r3(1024, std::pmr::new_delete_resource());
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_deallocate.pass.cpp
new file mode 100644
index 0000000..f75198a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_deallocate.pass.cpp
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  {
+    globalMemCounter.reset();
+
+    auto mono1                    = std::pmr::monotonic_buffer_resource(std::pmr::new_delete_resource());
+    std::pmr::memory_resource& r1 = mono1;
+
+    void* ret = r1.allocate(50);
+    assert(ret);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+
+    // mem.res.monotonic.buffer 1.2
+    // A call to deallocate has no effect, thus the amount of memory
+    // consumed increases monotonically until the resource is destroyed.
+    // Check that deallocate is a no-op
+    r1.deallocate(ret, 50);
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+
+    mono1.release();
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+    globalMemCounter.reset();
+
+    ret = r1.allocate(500);
+    assert(ret);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+
+    // Check that the destructor calls release()
+  }
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_exception_safety.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_exception_safety.pass.cpp
new file mode 100644
index 0000000..d8f8dac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_exception_safety.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// UNSUPPORTED: no-exceptions
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+struct repointable_resource : public std::pmr::memory_resource {
+  std::pmr::memory_resource* which;
+
+  explicit repointable_resource(std::pmr::memory_resource* res) : which(res) {}
+
+private:
+  void* do_allocate(size_t size, size_t align) override { return which->allocate(size, align); }
+
+  void do_deallocate(void* p, size_t size, size_t align) override { return which->deallocate(p, size, align); }
+
+  bool do_is_equal(std::pmr::memory_resource const& rhs) const noexcept override { return which->is_equal(rhs); }
+};
+
+void test_exception_safety() {
+  globalMemCounter.reset();
+  auto upstream = repointable_resource(std::pmr::new_delete_resource());
+  alignas(16) char buffer[64];
+  auto mono1                    = std::pmr::monotonic_buffer_resource(buffer, sizeof buffer, &upstream);
+  std::pmr::memory_resource& r1 = mono1;
+
+  void* res = r1.allocate(64, 16);
+  assert(res == buffer);
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  res = r1.allocate(64, 16);
+  assert(res != buffer);
+  assert(globalMemCounter.checkNewCalledEq(1));
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+  const size_t last_new_size = globalMemCounter.last_new_size;
+
+  upstream.which = std::pmr::null_memory_resource();
+  try {
+    res = r1.allocate(last_new_size, 16);
+    assert(false);
+  } catch (const std::bad_alloc&) {
+    // we expect this
+  }
+  assert(globalMemCounter.checkNewCalledEq(1));
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  upstream.which = std::pmr::new_delete_resource();
+  res            = r1.allocate(last_new_size, 16);
+  assert(res != buffer);
+  assert(globalMemCounter.checkNewCalledEq(2));
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  mono1.release();
+  assert(globalMemCounter.checkNewCalledEq(2));
+  assert(globalMemCounter.checkDeleteCalledEq(2));
+}
+
+int main(int, char**) {
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS && !defined(DISABLE_NEW_COUNT)
+  test_exception_safety();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_initial_buffer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_initial_buffer.pass.cpp
new file mode 100644
index 0000000..446030e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_initial_buffer.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  char buffer[100];
+  auto mono1 = std::pmr::monotonic_buffer_resource(buffer, sizeof buffer, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = mono1;
+
+  // Check that construction with a buffer does not allocate anything from the upstream
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  // Check that an allocation that fits in the buffer does not allocate anything from the upstream
+  void* ret = r1.allocate(50);
+  assert(ret);
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  // Check a second allocation
+  ret = r1.allocate(20);
+  assert(ret);
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  r1.deallocate(ret, 50);
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  // Check an allocation that doesn't fit in the original buffer
+  ret = r1.allocate(50);
+  assert(ret);
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+
+  r1.deallocate(ret, 50);
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  mono1.release();
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_zero_sized_buffer.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_zero_sized_buffer.pass.cpp
new file mode 100644
index 0000000..acd4ca5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_from_zero_sized_buffer.pass.cpp
@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  {
+    char buffer[100];
+    auto mono1                    = std::pmr::monotonic_buffer_resource(buffer, 0, std::pmr::new_delete_resource());
+    std::pmr::memory_resource& r1 = mono1;
+
+    void* ret = r1.allocate(1, 1);
+    assert(ret != nullptr);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+  }
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  globalMemCounter.reset();
+  {
+    auto mono1                    = std::pmr::monotonic_buffer_resource(nullptr, 0, std::pmr::new_delete_resource());
+    std::pmr::memory_resource& r1 = mono1;
+
+    void* ret = r1.allocate(1, 1);
+    assert(ret != nullptr);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+  }
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(1));
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_in_geometric_progression.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_in_geometric_progression.pass.cpp
new file mode 100644
index 0000000..ffe17d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_in_geometric_progression.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+void test_geometric_progression() {
+  // mem.res.monotonic.buffer 1.3
+  // Each additional buffer is larger than the previous one, following a
+  // geometric progression.
+
+  globalMemCounter.reset();
+  std::pmr::monotonic_buffer_resource mono1(100, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = mono1;
+
+  assert(globalMemCounter.checkNewCalledEq(0));
+  size_t next_buffer_size = 100;
+  void* ret               = r1.allocate(10, 1);
+  assert(ret != nullptr);
+  assert(globalMemCounter.checkNewCalledEq(1));
+  assert(globalMemCounter.last_new_size >= next_buffer_size);
+  next_buffer_size = globalMemCounter.last_new_size + 1;
+
+  int new_called = 1;
+  while (new_called < 5) {
+    ret = r1.allocate(10, 1);
+    if (globalMemCounter.new_called > new_called) {
+      assert(globalMemCounter.new_called == new_called + 1);
+      assert(globalMemCounter.last_new_size >= next_buffer_size);
+      next_buffer_size = globalMemCounter.last_new_size + 1;
+      new_called += 1;
+    }
+  }
+}
+
+int main(int, char**) {
+#if TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS && !defined(DISABLE_NEW_COUNT)
+  test_geometric_progression();
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_overaligned_request.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_overaligned_request.pass.cpp
new file mode 100644
index 0000000..d2b8454
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_overaligned_request.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  auto mono1                    = std::pmr::monotonic_buffer_resource(1024, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = mono1;
+
+  constexpr size_t big_alignment = 8 * alignof(std::max_align_t);
+  static_assert(big_alignment > 4);
+
+  void* ret = r1.allocate(2048, big_alignment);
+  assert(ret != nullptr);
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkAlignedNewCalledEq(1));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewSizeGe(2048));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewAlignEq(big_alignment));
+
+  // Check that a single highly aligned allocation request doesn't
+  // permanently "poison" the resource to allocate only super-aligned
+  // blocks of memory.
+  ret = r1.allocate(globalMemCounter.last_new_size, 4);
+  assert(ret != nullptr);
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(2));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkAlignedNewCalledEq(1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_with_initial_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_with_initial_size.pass.cpp
new file mode 100644
index 0000000..15b3336
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/allocate_with_initial_size.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+void test(size_t initial_buffer_size) {
+  globalMemCounter.reset();
+
+  auto mono1 = std::pmr::monotonic_buffer_resource(initial_buffer_size, std::pmr::new_delete_resource());
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  (void)mono1.allocate(1, 1);
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkLastNewSizeGe(initial_buffer_size));
+
+  (void)mono1.allocate(initial_buffer_size - 1, 1);
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledEq(1));
+}
+
+int main(int, char**) {
+  test(1);
+  test(8);
+  test(10);
+  test(100);
+  test(256);
+  test(1000);
+  test(1024);
+  test(1000000);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/equality.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/equality.pass.cpp
new file mode 100644
index 0000000..4263310
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.monotonic.buffer/mem.res.monotonic.buffer.mem/equality.pass.cpp
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class monotonic_buffer_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <cstddef> // size_t
+
+struct assert_on_compare : public std::pmr::memory_resource {
+  void* do_allocate(size_t, size_t) override {
+    assert(false);
+    return nullptr;
+  }
+
+  void do_deallocate(void*, size_t, size_t) override { assert(false); }
+
+  bool do_is_equal(const std::pmr::memory_resource&) const noexcept override {
+    assert(false);
+    return true;
+  }
+};
+
+int main(int, char**) {
+  // Same object
+  {
+    std::pmr::monotonic_buffer_resource r1;
+    std::pmr::monotonic_buffer_resource r2;
+    assert(r1 == r1);
+    assert(r1 != r2);
+
+    std::pmr::memory_resource& p1 = r1;
+    std::pmr::memory_resource& p2 = r2;
+    assert(p1 == p1);
+    assert(p1 != p2);
+    assert(p1 == r1);
+    assert(r1 == p1);
+    assert(p1 != r2);
+    assert(r2 != p1);
+  }
+  // Different types
+  {
+    std::pmr::monotonic_buffer_resource mono1;
+    std::pmr::memory_resource& r1 = mono1;
+    assert_on_compare c;
+    std::pmr::memory_resource& r2 = c;
+    assert(r1 != r2);
+    assert(!(r1 == r2));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/ctor_does_not_allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/ctor_does_not_allocate.pass.cpp
new file mode 100644
index 0000000..323bc43
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/ctor_does_not_allocate.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+
+template <class PoolResource>
+void test() {
+  // Constructing a pool resource should not cause allocations
+  // by itself; the resource should wait to allocate until an
+  // allocation is requested.
+
+  globalMemCounter.reset();
+  std::pmr::set_default_resource(std::pmr::new_delete_resource());
+
+  PoolResource r1;
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  PoolResource r2(std::pmr::pool_options{1024, 2048});
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  PoolResource r3(std::pmr::pool_options{1024, 2048}, std::pmr::new_delete_resource());
+  assert(globalMemCounter.checkNewCalledEq(0));
+}
+
+int main(int, char**) {
+  test<std::pmr::unsynchronized_pool_resource>();
+  test<std::pmr::synchronized_pool_resource>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/sync_with_default_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/sync_with_default_resource.pass.cpp
new file mode 100644
index 0000000..6597768
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/sync_with_default_resource.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+
+int main(int, char**) {
+  std::pmr::memory_resource* expected = std::pmr::null_memory_resource();
+  std::pmr::set_default_resource(expected);
+  {
+    std::pmr::pool_options opts{0, 0};
+    std::pmr::synchronized_pool_resource r1;
+    std::pmr::synchronized_pool_resource r2(opts);
+    assert(r1.upstream_resource() == expected);
+    assert(r2.upstream_resource() == expected);
+  }
+
+  expected = std::pmr::new_delete_resource();
+  std::pmr::set_default_resource(expected);
+  {
+    std::pmr::pool_options opts{1024, 2048};
+    std::pmr::synchronized_pool_resource r1;
+    std::pmr::synchronized_pool_resource r2(opts);
+    assert(r1.upstream_resource() == expected);
+    assert(r2.upstream_resource() == expected);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/unsync_with_default_resource.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/unsync_with_default_resource.pass.cpp
new file mode 100644
index 0000000..72a4bd9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.ctor/unsync_with_default_resource.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+
+int main(int, char**) {
+  std::pmr::memory_resource* expected = std::pmr::null_memory_resource();
+  std::pmr::set_default_resource(expected);
+  {
+    std::pmr::pool_options opts{0, 0};
+    std::pmr::unsynchronized_pool_resource r1;
+    std::pmr::unsynchronized_pool_resource r2(opts);
+    assert(r1.upstream_resource() == expected);
+    assert(r2.upstream_resource() == expected);
+  }
+
+  expected = std::pmr::new_delete_resource();
+  std::pmr::set_default_resource(expected);
+  {
+    std::pmr::pool_options opts{1024, 2048};
+    std::pmr::unsynchronized_pool_resource r1;
+    std::pmr::unsynchronized_pool_resource r2(opts);
+    assert(r1.upstream_resource() == expected);
+    assert(r2.upstream_resource() == expected);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/equality.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/equality.pass.cpp
new file mode 100644
index 0000000..39f0a11
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/equality.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <new>
+#include <type_traits>
+
+#include "count_new.h"
+
+class assert_on_compare : public std::pmr::memory_resource {
+  void* do_allocate(size_t, size_t) override {
+    assert(false);
+    return nullptr;
+  }
+
+  void do_deallocate(void*, size_t, size_t) override { assert(false); }
+
+  bool do_is_equal(const std::pmr::memory_resource&) const noexcept override {
+    assert(false);
+    return true;
+  }
+};
+
+template <class PoolResource>
+void test() {
+  // Same type
+  {
+    PoolResource pr1;
+    PoolResource pr2;
+    assert(pr1 == pr1);
+    assert(pr1 != pr2);
+
+    std::pmr::memory_resource& mr1 = pr1;
+    std::pmr::memory_resource& mr2 = pr2;
+    assert(mr1 == mr1);
+    assert(mr1 != mr2);
+    assert(mr1 == pr1);
+    assert(pr1 == mr1);
+    assert(mr1 != pr2);
+    assert(pr2 != mr1);
+  }
+  // Different types
+  {
+    PoolResource pr1;
+    std::pmr::memory_resource& mr1 = pr1;
+    assert_on_compare c;
+    std::pmr::memory_resource& mr2 = c;
+    assert(mr1 != mr2);
+    assert(!(mr1 == mr2));
+  }
+}
+
+int main(int, char**) {
+  test<std::pmr::synchronized_pool_resource>();
+  test<std::pmr::unsynchronized_pool_resource>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate.pass.cpp
new file mode 100644
index 0000000..fb90553
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  {
+    auto sync1                    = std::pmr::synchronized_pool_resource(std::pmr::new_delete_resource());
+    std::pmr::memory_resource& r1 = sync1;
+
+    void* ret = r1.allocate(50);
+    assert(ret);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledEq(0));
+
+    r1.deallocate(ret, 50);
+    sync1.release();
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledGreaterThan(0));
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+    globalMemCounter.reset();
+
+    ret = r1.allocate(500);
+    assert(ret);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+
+    // Check that the destructor calls release()
+  }
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledGreaterThan(0));
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate_overaligned_request.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate_overaligned_request.pass.cpp
new file mode 100644
index 0000000..d962d7f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate_overaligned_request.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <memory> // std::align
+
+#include "count_new.h"
+#include "test_macros.h"
+
+bool is_aligned_to(void* p, size_t alignment) {
+  void* p2     = p;
+  size_t space = 1;
+  void* result = std::align(alignment, 1, p2, space);
+  return (result == p);
+}
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  std::pmr::pool_options opts{1, 1024};
+  std::pmr::synchronized_pool_resource sync1(opts, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = sync1;
+
+  constexpr size_t big_alignment = 8 * alignof(std::max_align_t);
+  static_assert(big_alignment > 4);
+
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  void* ret = r1.allocate(2048, big_alignment);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, big_alignment));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+
+  ret = r1.allocate(16, 4);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, 4));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate_reuse_blocks.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate_reuse_blocks.pass.cpp
new file mode 100644
index 0000000..1fbc2b0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_allocate_reuse_blocks.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <memory> // std::align
+
+#include "count_new.h"
+#include "test_macros.h"
+
+static bool is_aligned_to(void* p, size_t alignment) {
+  void* p2     = p;
+  size_t space = 1;
+  void* result = std::align(alignment, 1, p2, space);
+  return (result == p);
+}
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  std::pmr::pool_options opts{1, 256};
+  auto sync1                    = std::pmr::synchronized_pool_resource(opts, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = sync1;
+
+  void* ret = r1.allocate(8);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, 8));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+  int new_called = globalMemCounter.new_called;
+
+  // After deallocation, the pool for 8-byte blocks should have at least one vacancy.
+  r1.deallocate(ret, 8);
+  assert(globalMemCounter.new_called == new_called);
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  // This should return an existing block from the pool: no new allocations.
+  ret = r1.allocate(8);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, 8));
+  assert(globalMemCounter.new_called == new_called);
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_deallocate_matches_allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_deallocate_matches_allocate.pass.cpp
new file mode 100644
index 0000000..26101d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/sync_deallocate_matches_allocate.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class synchronized_pool_resource
+
+#include <memory_resource>
+#include <algorithm>
+#include <cassert>
+#include <new>
+#include <vector>
+
+struct allocation_record {
+  size_t bytes;
+  size_t align;
+  explicit allocation_record(size_t b, size_t a) : bytes(b), align(a) {}
+  bool operator==(const allocation_record& rhs) const { return (bytes == rhs.bytes) && (align == rhs.align); }
+  bool operator<(const allocation_record& rhs) const {
+    if (bytes != rhs.bytes)
+      return (bytes < rhs.bytes);
+    return (align < rhs.align);
+  }
+};
+
+class test_resource : public std::pmr::memory_resource {
+  void* do_allocate(size_t bytes, size_t align) override {
+    void* result = std::pmr::new_delete_resource()->allocate(bytes, align);
+    successful_allocations.emplace_back(bytes, align);
+    return result;
+  }
+  void do_deallocate(void* p, size_t bytes, size_t align) override {
+    deallocations.emplace_back(bytes, align);
+    return std::pmr::new_delete_resource()->deallocate(p, bytes, align);
+  }
+  bool do_is_equal(const std::pmr::memory_resource&) const noexcept override { return false; }
+
+public:
+  std::vector<allocation_record> successful_allocations;
+  std::vector<allocation_record> deallocations;
+};
+
+template <class F>
+void test_allocation_pattern(F do_pattern) {
+  test_resource tr;
+  std::pmr::pool_options opts{0, 256};
+  std::pmr::synchronized_pool_resource spr(opts, &tr);
+
+  try {
+    do_pattern(spr);
+  } catch (const std::bad_alloc&) {
+  }
+  spr.release();
+
+  assert(tr.successful_allocations.size() == tr.deallocations.size());
+  assert(std::is_permutation(
+      tr.successful_allocations.begin(),
+      tr.successful_allocations.end(),
+      tr.deallocations.begin(),
+      tr.deallocations.end()));
+}
+
+template <size_t Bytes, size_t Align>
+auto foo() {
+  return [=](auto& mr) {
+    void* p = mr.allocate(Bytes, Align);
+    mr.deallocate(p, Bytes, Align);
+  };
+}
+
+int main(int, char**) {
+  test_allocation_pattern(foo<2, 1>());
+  test_allocation_pattern(foo<2, 8>());
+  test_allocation_pattern(foo<2, 64>());
+  test_allocation_pattern(foo<128, 1>());
+  test_allocation_pattern(foo<128, 8>());
+  test_allocation_pattern(foo<128, 64>());
+  test_allocation_pattern(foo<1024, 1>());
+  test_allocation_pattern(foo<1024, 8>());
+  test_allocation_pattern(foo<1024, 64>());
+
+  test_allocation_pattern([](auto& mr) {
+    void* p1 = mr.allocate(2, 1);
+    void* p2 = mr.allocate(2, 8);
+    void* p3 = mr.allocate(2, 64);
+    void* p4 = mr.allocate(128, 1);
+    void* p5 = mr.allocate(128, 8);
+    void* p6 = mr.allocate(128, 64);
+    void* p7 = mr.allocate(1024, 1);
+    void* p8 = mr.allocate(1024, 8);
+    void* p9 = mr.allocate(1024, 64);
+    mr.deallocate(p1, 2, 1);
+    mr.deallocate(p2, 2, 8);
+    mr.deallocate(p3, 2, 64);
+    mr.deallocate(p4, 128, 1);
+    mr.deallocate(p5, 128, 8);
+    mr.deallocate(p6, 128, 64);
+    mr.deallocate(p7, 1024, 1);
+    mr.deallocate(p8, 1024, 8);
+    mr.deallocate(p9, 1024, 64);
+  });
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate.pass.cpp
new file mode 100644
index 0000000..69d4f2e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+
+#include "count_new.h"
+#include "test_macros.h"
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  {
+    auto unsync1                  = std::pmr::unsynchronized_pool_resource(std::pmr::new_delete_resource());
+    std::pmr::memory_resource& r1 = unsync1;
+
+    void* ret = r1.allocate(50);
+    assert(ret);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+
+    r1.deallocate(ret, 50);
+    unsync1.release();
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledGreaterThan(0));
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+    globalMemCounter.reset();
+
+    ret = r1.allocate(500);
+    assert(ret);
+    ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+    assert(globalMemCounter.checkDeleteCalledEq(0));
+
+    // Check that the destructor calls release()
+  }
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkDeleteCalledGreaterThan(0));
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate_overaligned_request.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate_overaligned_request.pass.cpp
new file mode 100644
index 0000000..a316750
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate_overaligned_request.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <memory> // std::align
+
+#include "count_new.h"
+#include "test_macros.h"
+
+bool is_aligned_to(void* p, size_t alignment) {
+  void* p2     = p;
+  size_t space = 1;
+  void* result = std::align(alignment, 1, p2, space);
+  return (result == p);
+}
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  std::pmr::pool_options opts{1, 1024};
+  auto unsync1                  = std::pmr::unsynchronized_pool_resource(opts, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = unsync1;
+
+  constexpr size_t big_alignment = 8 * alignof(std::max_align_t);
+  static_assert(big_alignment > 4);
+
+  assert(globalMemCounter.checkNewCalledEq(0));
+
+  void* ret = r1.allocate(2048, big_alignment);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, big_alignment));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+
+  ret = r1.allocate(16, 4);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, 4));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(1));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate_reuse_blocks.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate_reuse_blocks.pass.cpp
new file mode 100644
index 0000000..72087e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_allocate_reuse_blocks.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <cassert>
+#include <memory> // std::align
+
+#include "count_new.h"
+#include "test_macros.h"
+
+static bool is_aligned_to(void* p, size_t alignment) {
+  void* p2     = p;
+  size_t space = 1;
+  void* result = std::align(alignment, 1, p2, space);
+  return (result == p);
+}
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  std::pmr::pool_options opts{1, 256};
+  auto unsync1                  = std::pmr::unsynchronized_pool_resource(opts, std::pmr::new_delete_resource());
+  std::pmr::memory_resource& r1 = unsync1;
+
+  void* ret = r1.allocate(8);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, 8));
+  ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(globalMemCounter.checkNewCalledGreaterThan(0));
+  int new_called = globalMemCounter.new_called;
+
+  // After deallocation, the pool for 8-byte blocks should have at least one vacancy.
+  r1.deallocate(ret, 8);
+  assert(globalMemCounter.new_called == new_called);
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  // This should return an existing block from the pool: no new allocations.
+  ret = r1.allocate(8);
+  assert(ret != nullptr);
+  assert(is_aligned_to(ret, 8));
+  assert(globalMemCounter.new_called == new_called);
+  assert(globalMemCounter.checkDeleteCalledEq(0));
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_deallocate_matches_allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_deallocate_matches_allocate.pass.cpp
new file mode 100644
index 0000000..2863cba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res.pool/mem.res.pool.mem/unsync_deallocate_matches_allocate.pass.cpp
@@ -0,0 +1,114 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: no-exceptions
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// <memory_resource>
+
+// class unsynchronized_pool_resource
+
+#include <memory_resource>
+#include <algorithm>
+#include <cassert>
+#include <new>
+#include <vector>
+
+struct allocation_record {
+  size_t bytes;
+  size_t align;
+  explicit allocation_record(size_t b, size_t a) : bytes(b), align(a) {}
+  bool operator==(const allocation_record& rhs) const { return (bytes == rhs.bytes) && (align == rhs.align); }
+  bool operator<(const allocation_record& rhs) const {
+    if (bytes != rhs.bytes)
+      return (bytes < rhs.bytes);
+    return (align < rhs.align);
+  }
+};
+
+class test_resource : public std::pmr::memory_resource {
+  void* do_allocate(size_t bytes, size_t align) override {
+    void* result = std::pmr::new_delete_resource()->allocate(bytes, align);
+    successful_allocations.emplace_back(bytes, align);
+    return result;
+  }
+  void do_deallocate(void* p, size_t bytes, size_t align) override {
+    deallocations.emplace_back(bytes, align);
+    return std::pmr::new_delete_resource()->deallocate(p, bytes, align);
+  }
+  bool do_is_equal(const std::pmr::memory_resource&) const noexcept override { return false; }
+
+public:
+  std::vector<allocation_record> successful_allocations;
+  std::vector<allocation_record> deallocations;
+};
+
+template <class F>
+void test_allocation_pattern(F do_pattern) {
+  test_resource tr;
+  std::pmr::pool_options opts{0, 256};
+  std::pmr::unsynchronized_pool_resource uspr(opts, &tr);
+
+  try {
+    do_pattern(uspr);
+  } catch (const std::bad_alloc&) {
+  }
+  uspr.release();
+
+  assert(tr.successful_allocations.size() == tr.deallocations.size());
+  assert(std::is_permutation(
+      tr.successful_allocations.begin(),
+      tr.successful_allocations.end(),
+      tr.deallocations.begin(),
+      tr.deallocations.end()));
+}
+
+template <size_t Bytes, size_t Align>
+auto foo() {
+  return [=](auto& mr) {
+    void* p = mr.allocate(Bytes, Align);
+    mr.deallocate(p, Bytes, Align);
+  };
+}
+
+int main(int, char**) {
+  test_allocation_pattern(foo<2, 1>());
+  test_allocation_pattern(foo<2, 8>());
+  test_allocation_pattern(foo<2, 64>());
+  test_allocation_pattern(foo<128, 1>());
+  test_allocation_pattern(foo<128, 8>());
+  test_allocation_pattern(foo<128, 64>());
+  test_allocation_pattern(foo<1024, 1>());
+  test_allocation_pattern(foo<1024, 8>());
+  test_allocation_pattern(foo<1024, 64>());
+
+  test_allocation_pattern([](auto& mr) {
+    void* p1 = mr.allocate(2, 1);
+    void* p2 = mr.allocate(2, 8);
+    void* p3 = mr.allocate(2, 64);
+    void* p4 = mr.allocate(128, 1);
+    void* p5 = mr.allocate(128, 8);
+    void* p6 = mr.allocate(128, 64);
+    void* p7 = mr.allocate(1024, 1);
+    void* p8 = mr.allocate(1024, 8);
+    void* p9 = mr.allocate(1024, 64);
+    mr.deallocate(p1, 2, 1);
+    mr.deallocate(p2, 2, 8);
+    mr.deallocate(p3, 2, 64);
+    mr.deallocate(p4, 128, 1);
+    mr.deallocate(p5, 128, 8);
+    mr.deallocate(p6, 128, 64);
+    mr.deallocate(p7, 1024, 1);
+    mr.deallocate(p8, 1024, 8);
+    mr.deallocate(p9, 1024, 64);
+  });
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/construct.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/construct.fail.cpp
new file mode 100644
index 0000000..acea961
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/construct.fail.cpp
@@ -0,0 +1,19 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// Check that memory_resource is not constructible
+
+#include <memory_resource>
+
+void test() {
+  std::pmr::memory_resource m; // expected-error {{variable type 'std::pmr::memory_resource' is an abstract class}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.eq/equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.eq/equal.pass.cpp
new file mode 100644
index 0000000..d31cfda
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.eq/equal.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// bool operator==(memory_resource const &, memory_resource const &) noexcept;
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  // check return types
+  {
+    const std::pmr::memory_resource* mr1 = nullptr;
+    const std::pmr::memory_resource* mr2 = nullptr;
+    ASSERT_SAME_TYPE(decltype(*mr1 == *mr2), bool);
+    ASSERT_NOEXCEPT(*mr1 == *mr2);
+  }
+  // equal
+  {
+    TestResource r1(1);
+    TestResource r2(1);
+    const std::pmr::memory_resource& mr1 = r1;
+    const std::pmr::memory_resource& mr2 = r2;
+
+    assert(mr1 == mr2);
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(0));
+
+    assert(mr2 == mr1);
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(1));
+  }
+  // equal same object
+  {
+    TestResource r1(1);
+    const std::pmr::memory_resource& mr1 = r1;
+    const std::pmr::memory_resource& mr2 = r1;
+
+    assert(mr1 == mr2);
+    assert(r1.checkIsEqualCalledEq(0));
+
+    assert(mr2 == mr1);
+    assert(r1.checkIsEqualCalledEq(0));
+  }
+  // not equal
+  {
+    TestResource r1(1);
+    TestResource r2(2);
+    const std::pmr::memory_resource& mr1 = r1;
+    const std::pmr::memory_resource& mr2 = r2;
+
+    assert(!(mr1 == mr2));
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(0));
+
+    assert(!(mr2 == mr1));
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(1));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.eq/not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.eq/not_equal.pass.cpp
new file mode 100644
index 0000000..5444d62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.eq/not_equal.pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+// bool operator!=(memory_resource const &, memory_resource const &) noexcept;
+
+#include <memory_resource>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  // check return types
+  {
+    const std::pmr::memory_resource* mr1 = nullptr;
+    const std::pmr::memory_resource* mr2 = nullptr;
+    ASSERT_SAME_TYPE(decltype(*mr1 != *mr2), bool);
+    ASSERT_NOEXCEPT(*mr1 != *mr2);
+  }
+  // not equal
+  {
+    TestResource r1(1);
+    TestResource r2(2);
+    const std::pmr::memory_resource& mr1 = r1;
+    const std::pmr::memory_resource& mr2 = r2;
+
+    assert(mr1 != mr2);
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(0));
+
+    assert(mr2 != mr1);
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(1));
+  }
+  // equal
+  {
+    TestResource r1(1);
+    TestResource r2(1);
+    const std::pmr::memory_resource& mr1 = r1;
+    const std::pmr::memory_resource& mr2 = r2;
+
+    assert(!(mr1 != mr2));
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(0));
+
+    assert(!(mr2 != mr1));
+    assert(r1.checkIsEqualCalledEq(1));
+    assert(r2.checkIsEqualCalledEq(1));
+  }
+  // equal same object
+  {
+    TestResource r1(1);
+    const std::pmr::memory_resource& mr1 = r1;
+    const std::pmr::memory_resource& mr2 = r1;
+
+    assert(!(mr1 != mr2));
+    assert(r1.checkIsEqualCalledEq(0));
+
+    assert(!(mr2 != mr1));
+    assert(r1.checkIsEqualCalledEq(0));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.private/private_members.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.private/private_members.fail.cpp
new file mode 100644
index 0000000..f17c813
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.private/private_members.fail.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// memory_resource::do_allocate(size_t, size_t);          /* private */
+// memory_resource::do_deallocate(void*, size_t, size_t); /* private */
+// memory_resource::do_is_equal(memory_resource const&);  /* private */
+
+#include <memory_resource>
+
+void test() {
+  std::pmr::memory_resource* m = std::pmr::new_delete_resource();
+  m->do_allocate(0, 0);            // expected-error{{'do_allocate' is a private member}}
+  m->do_deallocate(nullptr, 0, 0); // expected-error{{'do_deallocate' is a private member}}
+  m->do_is_equal(*m);              // expected-error{{'do_is_equal' is a private member}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.private/protected_members.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.private/protected_members.fail.cpp
new file mode 100644
index 0000000..bfd6023
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.private/protected_members.fail.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <memory_resource>
+
+// monotonic_buffer_resource::do_allocate(size_t, size_t);          /* protected */
+// monotonic_buffer_resource::do_deallocate(void*, size_t, size_t); /* protected */
+// monotonic_buffer_resource::do_is_equal(memory_resource const&);  /* protected */
+
+// synchronized_pool_resource::do_allocate(size_t, size_t);          /* protected */
+// synchronized_pool_resource::do_deallocate(void*, size_t, size_t); /* protected */
+// synchronized_pool_resource::do_is_equal(memory_resource const&);  /* protected */
+
+// unsynchronized_pool_resource::do_allocate(size_t, size_t);          /* protected */
+// unsynchronized_pool_resource::do_deallocate(void*, size_t, size_t); /* protected */
+// unsynchronized_pool_resource::do_is_equal(memory_resource const&);  /* protected */
+
+#include <memory_resource>
+
+void test() {
+  {
+    std::pmr::monotonic_buffer_resource m;
+    m.do_allocate(0, 0);            // expected-error{{'do_allocate' is a protected member}}
+    m.do_deallocate(nullptr, 0, 0); // expected-error{{'do_deallocate' is a protected member}}
+    m.do_is_equal(m);               // expected-error{{'do_is_equal' is a protected member}}
+  }
+  {
+    std::pmr::synchronized_pool_resource m;
+    m.do_allocate(0, 0);            // expected-error{{'do_allocate' is a protected member}}
+    m.do_deallocate(nullptr, 0, 0); // expected-error{{'do_deallocate' is a protected member}}
+    m.do_is_equal(m);               // expected-error{{'do_is_equal' is a protected member}}
+  }
+  {
+    std::pmr::unsynchronized_pool_resource m;
+    m.do_allocate(0, 0);            // expected-error{{'do_allocate' is a protected member}}
+    m.do_deallocate(nullptr, 0, 0); // expected-error{{'do_deallocate' is a protected member}}
+    m.do_is_equal(m);               // expected-error{{'do_is_equal' is a protected member}}
+  }
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/allocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/allocate.pass.cpp
new file mode 100644
index 0000000..dde8faa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/allocate.pass.cpp
@@ -0,0 +1,80 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING void *memory_resource::allocate(size_t, size_t = max_align)
+//
+// Concerns:
+//  A) 'memory_resource' contains a member 'allocate' with the required
+//     signature, including the default alignment parameter.
+//  B) The return type of 'allocate' is 'void*'.
+//  C) 'allocate' is not marked as 'noexcept'.
+//  D) Invoking 'allocate' invokes 'do_allocate' with the same arguments.
+//  E) If 'do_allocate' throws then 'allocate' propagates that exception.
+
+#include <memory_resource>
+#include <cassert>
+#include <cstddef>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  TestResource R(42);
+  auto& P                      = R.getController();
+  std::pmr::memory_resource& M = R;
+  {
+    static_assert(std::is_same<decltype(M.allocate(0, 1)), void*>::value, "Must be void*");
+    static_assert(std::is_same<decltype(M.allocate(0)), void*>::value, "Must be void*");
+  }
+  {
+    static_assert(!noexcept(M.allocate(0, 1)), "Must not be noexcept.");
+    static_assert(!noexcept(M.allocate(0)), "Must not be noexcept.");
+  }
+  {
+    int s   = 42;
+    int a   = 64;
+    void* p = M.allocate(s, a);
+    assert(P.alloc_count == 1);
+    assert(P.checkAlloc(p, s, a));
+
+    s = 128;
+    a = MaxAlignV;
+    p = M.allocate(s);
+    assert(P.alloc_count == 2);
+    assert(P.checkAlloc(p, s, a));
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    TestResource R2;
+    auto& P2                      = R2.getController();
+    P2.throw_on_alloc             = true;
+    std::pmr::memory_resource& M2 = R2;
+    try {
+      (void)M2.allocate(42);
+      assert(false);
+    } catch (TestException const&) {
+      // do nothing.
+    } catch (...) {
+      assert(false);
+    }
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/deallocate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/deallocate.pass.cpp
new file mode 100644
index 0000000..1f1b2f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/deallocate.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING void * memory_resource::deallocate(void *, size_t, size_t = max_align)
+//
+// Concerns:
+//  A) 'memory_resource' contains a member 'deallocate' with the required
+//     signature, including the default alignment parameter.
+//  B) The return type of 'deallocate' is 'void'.
+//  C) 'deallocate' is not marked as 'noexcept'.
+//  D) Invoking 'deallocate' invokes 'do_deallocate' with the same arguments.
+
+#include <memory_resource>
+#include <cassert>
+#include <cstddef>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  NullResource R(42);
+  auto& P                      = R.getController();
+  std::pmr::memory_resource& M = R;
+  {
+    ASSERT_SAME_TYPE(decltype(M.deallocate(std::declval<int*>(), 0, 0)), void);
+    ASSERT_SAME_TYPE(decltype(M.deallocate(std::declval<int*>(), 0)), void);
+  }
+  {
+    static_assert(!noexcept(M.deallocate(std::declval<int*>(), 0, 0)));
+    static_assert(!noexcept(M.deallocate(std::declval<int*>(), 0)));
+  }
+  {
+    int s   = 100;
+    int a   = 64;
+    void* p = reinterpret_cast<void*>(640);
+    M.deallocate(p, s, a);
+    assert(P.dealloc_count == 1);
+    assert(P.checkDealloc(p, s, a));
+
+    s = 128;
+    a = alignof(std::max_align_t);
+    p = reinterpret_cast<void*>(12800);
+    M.deallocate(p, s);
+    assert(P.dealloc_count == 2);
+    assert(P.checkDealloc(p, s, a));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/dtor.pass.cpp
new file mode 100644
index 0000000..4e2bd7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/dtor.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING virtual ~memory_resource()
+//
+// Concerns:
+//  A) 'memory_resource' is destructible.
+//  B) The destructor is implicitly marked noexcept.
+//  C) The destructor is marked virtual.
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  static_assert(std::has_virtual_destructor_v<std::pmr::memory_resource>);
+  static_assert(std::is_nothrow_destructible_v<std::pmr::memory_resource>);
+  static_assert(std::is_abstract_v<std::pmr::memory_resource>);
+
+  // Check that the destructor of `TestResource` is called when
+  // it is deleted as a pointer to `memory_resource`.
+  {
+    using TR                     = TestResource;
+    std::pmr::memory_resource* M = new TR(42);
+    assert(TR::resource_alive == 1);
+    assert(TR::resource_constructed == 1);
+    assert(TR::resource_destructed == 0);
+
+    delete M;
+
+    assert(TR::resource_alive == 0);
+    assert(TR::resource_constructed == 1);
+    assert(TR::resource_destructed == 1);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/is_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/is_equal.pass.cpp
new file mode 100644
index 0000000..0844294
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/mem.res/mem.res.public/is_equal.pass.cpp
@@ -0,0 +1,95 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
+
+// test_memory_resource requires RTTI for dynamic_cast
+// UNSUPPORTED: no-rtti
+
+// <memory_resource>
+
+//------------------------------------------------------------------------------
+// TESTING virtual bool is_equal(memory_resource const &) const noexcept
+//
+// Concerns:
+//   A) 'memory_resource' provides a function 'is_equal' with the required
+//      signature.
+//   B) 'is_equal' is noexcept.
+//   C) 'do_is_equal' is called using the same arguments passed to 'is_equal'
+//      and the resulting value is returned.
+//   D) 'do_is_equal' is called on the LHS object and not the RHS object.
+
+#include <memory_resource>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_std_memory_resource.h"
+
+int main(int, char**) {
+  {
+    const std::pmr::memory_resource* r1 = nullptr;
+    const std::pmr::memory_resource* r2 = nullptr;
+    ASSERT_NOEXCEPT(r1->is_equal(*r2));
+  }
+  {
+    TestResource1 R1(1);
+    auto& P1                            = R1.getController();
+    const std::pmr::memory_resource& M1 = R1;
+
+    TestResource2 R2(1);
+    auto& P2                            = R2.getController();
+    const std::pmr::memory_resource& M2 = R2;
+
+    assert(M1.is_equal(M2) == false);
+    assert(P1.checkIsEqualCalledEq(1));
+    assert(P2.checkIsEqualCalledEq(0));
+
+    assert(M2.is_equal(M1) == false);
+    assert(P2.checkIsEqualCalledEq(1));
+    assert(P1.checkIsEqualCalledEq(1));
+  }
+  {
+    TestResource1 R1(1);
+    auto& P1                            = R1.getController();
+    const std::pmr::memory_resource& M1 = R1;
+
+    TestResource1 R2(2);
+    auto& P2                            = R2.getController();
+    const std::pmr::memory_resource& M2 = R2;
+
+    assert(M1.is_equal(M2) == false);
+    assert(P1.checkIsEqualCalledEq(1));
+    assert(P2.checkIsEqualCalledEq(0));
+
+    assert(M2.is_equal(M1) == false);
+    assert(P2.checkIsEqualCalledEq(1));
+    assert(P1.checkIsEqualCalledEq(1));
+  }
+  {
+    TestResource1 R1(1);
+    auto& P1                            = R1.getController();
+    const std::pmr::memory_resource& M1 = R1;
+
+    TestResource1 R2(1);
+    auto& P2                            = R2.getController();
+    const std::pmr::memory_resource& M2 = R2;
+
+    assert(M1.is_equal(M2) == true);
+    assert(P1.checkIsEqualCalledEq(1));
+    assert(P2.checkIsEqualCalledEq(0));
+
+    assert(M2.is_equal(M1) == true);
+    assert(P2.checkIsEqualCalledEq(1));
+    assert(P1.checkIsEqualCalledEq(1));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/nodiscard.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/nodiscard.verify.cpp
new file mode 100644
index 0000000..8adfa03
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/mem.res/nodiscard.verify.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// check that functions are marked [[nodiscard]]
+
+// [[nodiscard]] std::pmr::memory_resource::allocate(size_t, size_t);
+// [[nodiscard]] std::pmr::polymorphic_allocator<T>::allocate(size_t, size_t);
+
+#include <memory_resource>
+
+void f() {
+  std::pmr::memory_resource* res = nullptr;
+  res->allocate(0);    // expected-warning {{ignoring return value of function}}
+  res->allocate(0, 1); // expected-warning {{ignoring return value of function}}
+
+  std::pmr::polymorphic_allocator<int> poly;
+  poly.allocate(0); // expected-warning {{ignoring return value of function}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/operators/rel_ops.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/operators/rel_ops.pass.cpp
new file mode 100644
index 0000000..52ed642
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/operators/rel_ops.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// test rel_ops
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct A
+{
+    int data_;
+
+    explicit A(int data = -1) : data_(data) {}
+};
+
+inline
+bool
+operator == (const A& x, const A& y)
+{
+    return x.data_ == y.data_;
+}
+
+inline
+bool
+operator < (const A& x, const A& y)
+{
+    return x.data_ < y.data_;
+}
+
+int main(int, char**)
+{
+    using namespace std::rel_ops;
+    A a1(1);
+    A a2(2);
+    assert(a1 == a1);
+    assert(a1 != a2);
+    assert(a1 < a2);
+    assert(a2 > a1);
+    assert(a1 <= a1);
+    assert(a1 <= a2);
+    assert(a2 >= a2);
+    assert(a2 >= a1);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const.compile.fail.cpp
new file mode 100644
index 0000000..e186514
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const.compile.fail.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<size_t I, class T1, class T2>
+//     const typename tuple_element<I, std::pair<T1, T2> >::type&
+//     get(const pair<T1, T2>&);
+
+#include <utility>
+#include <cassert>
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P;
+        const P p(3, 4);
+        assert(std::get<0>(p) == 3);
+        assert(std::get<1>(p) == 4);
+        std::get<0>(p) = 5;
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const.pass.cpp
new file mode 100644
index 0000000..d9747b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<size_t I, class T1, class T2>
+//     const typename tuple_element<I, std::pair<T1, T2> >::type&
+//     get(const pair<T1, T2>&);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P;
+        const P p(3, static_cast<short>(4));
+        assert(std::get<0>(p) == 3);
+        assert(std::get<1>(p) == 4);
+    }
+
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, short> P;
+        constexpr P p1(3, static_cast<short>(4));
+        static_assert(std::get<0>(p1) == 3, "");
+        static_assert(std::get<1>(p1) == 4, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp
new file mode 100644
index 0000000..88b646c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_const_rv.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<size_t I, class T1, class T2>
+//     const typename tuple_element<I, std::pair<T1, T2> >::type&&
+//     get(const pair<T1, T2>&&);
+
+// UNSUPPORTED: c++03 && !stdlib=libc++
+
+#include <utility>
+#include <memory>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+#if TEST_STD_VER >= 11
+    typedef std::pair<std::unique_ptr<int>, short> P;
+    const P p(std::unique_ptr<int>(new int(3)), static_cast<short>(4));
+    static_assert(std::is_same<const std::unique_ptr<int>&&, decltype(std::get<0>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<0>(std::move(p))), "");
+    const std::unique_ptr<int>&& ptr = std::get<0>(std::move(p));
+    assert(*ptr == 3);
+#endif
+    }
+
+    {
+    int x = 42;
+    int const y = 43;
+    std::pair<int&, int const&> const p(x, y);
+    static_assert(std::is_same<int&, decltype(std::get<0>(std::move(p)))>::value, "");
+    static_assert(std::is_same<int const&, decltype(std::get<1>(std::move(p)))>::value, "");
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(std::get<0>(std::move(p))), "");
+    static_assert(noexcept(std::get<1>(std::move(p))), "");
+#endif
+    }
+
+    {
+#if TEST_STD_VER >= 11
+    int x = 42;
+    int const y = 43;
+    std::pair<int&&, int const&&> const p(std::move(x), std::move(y));
+    static_assert(std::is_same<int&&, decltype(std::get<0>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<0>(std::move(p))), "");
+    static_assert(std::is_same<int const&&, decltype(std::get<1>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<1>(std::move(p))), "");
+#endif
+    }
+
+#if TEST_STD_VER > 11
+    {
+    typedef std::pair<int, short> P;
+    constexpr const P p1(3, static_cast<short>(4));
+    static_assert(std::get<0>(std::move(p1)) == 3, "");
+    static_assert(std::get<1>(std::move(p1)) == 4, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_non_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_non_const.pass.cpp
new file mode 100644
index 0000000..6119cd5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_non_const.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<size_t I, class T1, class T2>
+//     typename tuple_element<I, std::pair<T1, T2> >::type&
+//     get(pair<T1, T2>&);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 11
+struct S {
+   std::pair<int, int> a;
+   int k;
+   constexpr S() : a{1,2}, k(std::get<0>(a)) {}
+   };
+
+constexpr std::pair<int, int> getP () { return { 3, 4 }; }
+#endif
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P;
+        P p(3, static_cast<short>(4));
+        assert(std::get<0>(p) == 3);
+        assert(std::get<1>(p) == 4);
+        std::get<0>(p) = 5;
+        std::get<1>(p) = 6;
+        assert(std::get<0>(p) == 5);
+        assert(std::get<1>(p) == 6);
+    }
+
+#if TEST_STD_VER > 11
+    {
+        static_assert(S().k == 1, "");
+        static_assert(std::get<1>(getP()) == 4, "");
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_rv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_rv.pass.cpp
new file mode 100644
index 0000000..2a81c49
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/get_rv.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<size_t I, class T1, class T2>
+//     typename tuple_element<I, std::pair<T1, T2> >::type&&
+//     get(pair<T1, T2>&&);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<std::unique_ptr<int>, short> P;
+        P p(std::unique_ptr<int>(new int(3)), static_cast<short>(4));
+        std::unique_ptr<int> ptr = std::get<0>(std::move(p));
+        assert(*ptr == 3);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type.pass.cpp
new file mode 100644
index 0000000..f6940c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+
+#include <utility>
+#include <string>
+#include <type_traits>
+#include <complex>
+#include <memory>
+
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::complex<float> cf;
+    {
+    auto t1 = std::make_pair<int, cf> ( 42, { 1,2 } );
+    assert ( std::get<int>(t1) == 42 );
+    assert ( std::get<cf>(t1).real() == 1 );
+    assert ( std::get<cf>(t1).imag() == 2 );
+    }
+
+    {
+    const std::pair<int, const int> p1 { 1, 2 };
+    const int &i1 = std::get<int>(p1);
+    const int &i2 = std::get<const int>(p1);
+    assert ( i1 == 1 );
+    assert ( i2 == 2 );
+    }
+
+    {
+    typedef std::unique_ptr<int> upint;
+    std::pair<upint, int> t(upint(new int(4)), 42);
+    upint p = std::get<upint>(std::move(t)); // get rvalue
+    assert(*p == 4);
+    assert(std::get<upint>(t) == nullptr); // has been moved from
+    }
+
+    {
+    typedef std::unique_ptr<int> upint;
+    const std::pair<upint, int> t(upint(new int(4)), 42);
+    static_assert(std::is_same<const upint&&, decltype(std::get<upint>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<upint>(std::move(t))), "");
+    static_assert(std::is_same<const int&&, decltype(std::get<int>(std::move(t)))>::value, "");
+    static_assert(noexcept(std::get<int>(std::move(t))), "");
+    auto&& p = std::get<upint>(std::move(t)); // get const rvalue
+    auto&& i = std::get<int>(std::move(t)); // get const rvalue
+    assert(*p == 4);
+    assert(i == 42);
+    assert(std::get<upint>(t) != nullptr);
+    }
+
+    {
+    int x = 42;
+    int const y = 43;
+    std::pair<int&, int const&> const p(x, y);
+    static_assert(std::is_same<int&, decltype(std::get<int&>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<int&>(std::move(p))), "");
+    static_assert(std::is_same<int const&, decltype(std::get<int const&>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<int const&>(std::move(p))), "");
+    }
+
+    {
+    int x = 42;
+    int const y = 43;
+    std::pair<int&&, int const&&> const p(std::move(x), std::move(y));
+    static_assert(std::is_same<int&&, decltype(std::get<int&&>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<int&&>(std::move(p))), "");
+    static_assert(std::is_same<int const&&, decltype(std::get<int const&&>(std::move(p)))>::value, "");
+    static_assert(noexcept(std::get<int const&&>(std::move(p))), "");
+    }
+
+    {
+    constexpr const std::pair<int, const int> p { 1, 2 };
+    static_assert(std::get<int>(std::move(p)) == 1, "");
+    static_assert(std::get<const int>(std::move(p)) == 2, "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type1.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type1.compile.fail.cpp
new file mode 100644
index 0000000..931ec31
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type1.compile.fail.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <utility>
+#include <complex>
+
+#include <cassert>
+
+int main(int, char**)
+{
+    typedef std::complex<float> cf;
+    auto t1 = std::make_pair<int, double> ( 42, 3.4 );
+    assert (( std::get<cf>(t1) == cf {1,2} ));  // no such type
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type2.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type2.compile.fail.cpp
new file mode 100644
index 0000000..aa6eaaa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type2.compile.fail.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <utility>
+#include <complex>
+
+#include <cassert>
+
+int main(int, char**)
+{
+    typedef std::complex<float> cf;
+    auto t1 = std::make_pair<int, int> ( 42, 43 );
+    assert ( std::get<int>(t1) == 42 ); // two ints
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type3.compile.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type3.compile.fail.cpp
new file mode 100644
index 0000000..559ff3c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/pairs.by.type3.compile.fail.cpp
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11
+#include <utility>
+#include <complex>
+
+#include <cassert>
+
+int main(int, char**)
+{
+    typedef std::unique_ptr<int> upint;
+    std::pair<upint, int> t(upint(new int(4)), 23);
+    upint p = std::get<upint>(t);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_element.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_element.fail.cpp
new file mode 100644
index 0000000..a9a16a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_element.fail.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// tuple_element<I, pair<T1, T2> >::type
+
+#include <utility>
+
+int main(int, char**)
+{
+    typedef std::pair<int, short> T;
+    std::tuple_element<2, T>::type foo; // expected-error@*:* {{Index out of bounds in std::tuple_element<std::pair<T1, T2>>}}
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_element.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_element.pass.cpp
new file mode 100644
index 0000000..ec3d7e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_element.pass.cpp
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// tuple_element<I, pair<T1, T2> >::type
+
+#include <type_traits>
+#include <utility>
+
+template <class T1, class T2>
+void test()
+{
+    {
+    typedef T1 Exp1;
+    typedef T2 Exp2;
+    typedef std::pair<T1, T2> P;
+    static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
+    }
+    {
+    typedef T1 const Exp1;
+    typedef T2 const Exp2;
+    typedef std::pair<T1, T2> const P;
+    static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
+    }
+    {
+    typedef T1 volatile Exp1;
+    typedef T2 volatile Exp2;
+    typedef std::pair<T1, T2> volatile P;
+    static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
+    }
+    {
+    typedef T1 const volatile Exp1;
+    typedef T2 const volatile Exp2;
+    typedef std::pair<T1, T2> const volatile P;
+    static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
+    static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
+    }
+}
+
+int main(int, char**)
+{
+    test<int, short>();
+    test<int*, char>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_size.pass.cpp
new file mode 100644
index 0000000..104f898
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.astuple/tuple_size.pass.cpp
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// tuple_size<pair<T1, T2> >::value
+
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P1;
+        static_assert((std::tuple_size<P1>::value == 2), "");
+    }
+    {
+        typedef std::pair<int, short> const P1;
+        static_assert((std::tuple_size<P1>::value == 2), "");
+    }
+    {
+        typedef std::pair<int, short> volatile P1;
+        static_assert((std::tuple_size<P1>::value == 2), "");
+    }
+    {
+        typedef std::pair<int, short> const volatile P1;
+        static_assert((std::tuple_size<P1>::value == 2), "");
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct.pass.cpp
new file mode 100644
index 0000000..65f6d62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// struct piecewise_construct_t { explicit piecewise_construct_t() = default; };
+// constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
+
+#include <utility>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int i_;
+    char c_;
+public:
+    constexpr A(int i, char c) : i_(i), c_(c) {}
+    constexpr int get_i() const {return i_;}
+    constexpr char get_c() const {return c_;}
+};
+
+class B
+{
+    double d_;
+    unsigned u1_;
+    unsigned u2_;
+public:
+    constexpr explicit B(double d, unsigned u1, unsigned u2) : d_(d), u1_(u1), u2_(u2) {}
+    constexpr double get_d() const {return d_;}
+    constexpr unsigned get_u1() const {return u1_;}
+    constexpr unsigned get_u2() const {return u2_;}
+};
+
+TEST_CONSTEXPR_CXX20
+bool test()
+{
+    std::pair<A, B> p(std::piecewise_construct,
+                      std::make_tuple(4, 'a'),
+                      std::make_tuple(3.5, 6u, 2u));
+    assert(p.first.get_i() == 4);
+    assert(p.first.get_c() == 'a');
+    assert(p.second.get_d() == 3.5);
+    assert(p.second.get_u1() == 6u);
+    assert(p.second.get_u2() == 2u);
+
+    return true;
+}
+
+int main(int, char**)
+{
+    test();
+#if TEST_STD_VER >= 20
+    static_assert(test());
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.fail.cpp
new file mode 100644
index 0000000..3a7af09
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.fail.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// struct piecewise_construct_t { explicit piecewise_construct_t() = default; };
+// constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
+
+// This test checks for LWG 2510.
+
+#include <utility>
+
+
+std::piecewise_construct_t f() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.pass.cpp
new file mode 100644
index 0000000..84ff997
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pair.piecewise/piecewise_construct_t.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// struct piecewise_construct_t { explicit piecewise_construct_t() = default; };
+// constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t();
+
+#include <utility>
+
+
+int main(int, char**) {
+    std::piecewise_construct_t x = std::piecewise_construct;
+    (void)x;
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..1f764da
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.general/nothing_to_do.pass.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**)
+{
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/U_V.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/U_V.pass.cpp
new file mode 100644
index 0000000..33b5711
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/U_V.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<class U = T1, class V = T2> pair(U&&, V&&);
+
+#include <utility>
+#include <cassert>
+#include <memory>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+
+#include "test_macros.h"
+using namespace ImplicitTypes; // Get implicitly archetypes
+
+template <class T1, class T1Arg,
+          bool CanCopy = true, bool CanConvert = CanCopy>
+void test_sfinae() {
+    using P1 = std::pair<T1, int>;
+    using P2 = std::pair<int, T1>;
+    using T2 = int const&;
+    static_assert(std::is_constructible<P1, T1Arg, T2>::value == CanCopy, "");
+    static_assert(test_convertible<P1,   T1Arg, T2>() == CanConvert, "");
+    static_assert(std::is_constructible<P2, T2,   T1Arg>::value == CanCopy, "");
+    static_assert(test_convertible<P2,   T2,   T1Arg>() == CanConvert, "");
+}
+
+struct ExplicitT {
+  constexpr explicit ExplicitT(int x) : value(x) {}
+  int value;
+};
+
+struct ImplicitT {
+  constexpr ImplicitT(int x) : value(x) {}
+  int value;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<std::unique_ptr<int>, short*> P;
+        P p(std::unique_ptr<int>(new int(3)), nullptr);
+        assert(*p.first == 3);
+        assert(p.second == nullptr);
+    }
+    {
+        // Test non-const lvalue and rvalue types
+        test_sfinae<AllCtors, AllCtors&>();
+        test_sfinae<AllCtors, AllCtors&&>();
+        test_sfinae<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors&, true, false>();
+        test_sfinae<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors&&, true, false>();
+        test_sfinae<CopyOnly, CopyOnly&>();
+        test_sfinae<CopyOnly, CopyOnly&&>();
+        test_sfinae<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly&, true, false>();
+        test_sfinae<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly&&, true, false>();
+        test_sfinae<MoveOnly, MoveOnly&, false>();
+        test_sfinae<MoveOnly, MoveOnly&&>();
+        test_sfinae<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly&, false>();
+        test_sfinae<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly&&, true, false>();
+        test_sfinae<NonCopyable, NonCopyable&, false>();
+        test_sfinae<NonCopyable, NonCopyable&&, false>();
+        test_sfinae<ExplicitTypes::NonCopyable, ExplicitTypes::NonCopyable&, false>();
+        test_sfinae<ExplicitTypes::NonCopyable, ExplicitTypes::NonCopyable&&, false>();
+    }
+    {
+        // Test converting types
+        test_sfinae<ConvertingType, int&>();
+        test_sfinae<ConvertingType, const int&>();
+        test_sfinae<ConvertingType, int&&>();
+        test_sfinae<ConvertingType, const int&&>();
+        test_sfinae<ExplicitTypes::ConvertingType, int&, true, false>();
+        test_sfinae<ExplicitTypes::ConvertingType, const int&, true, false>();
+        test_sfinae<ExplicitTypes::ConvertingType, int&&, true, false>();
+        test_sfinae<ExplicitTypes::ConvertingType, const int&&, true, false>();
+    }
+#if TEST_STD_VER > 11
+    { // explicit constexpr test
+        constexpr std::pair<ExplicitT, ExplicitT> p(42, 43);
+        static_assert(p.first.value == 42, "");
+        static_assert(p.second.value == 43, "");
+    }
+    { // implicit constexpr test
+        constexpr std::pair<ImplicitT, ImplicitT> p = {42, 43};
+        static_assert(p.first.value == 42, "");
+        static_assert(p.second.value == 43, "");
+    }
+#endif
+
+    // Test support for http://wg21.link/P1951, default arguments for pair's constructor.
+    // Basically, this turns copies for brace initialization into moves.
+#if TEST_STD_VER > 20
+    {
+        struct TrackInit {
+            TrackInit() = default;
+            constexpr TrackInit(TrackInit const& other) : wasMoveInit(other.wasMoveInit), wasCopyInit(true) { }
+            constexpr TrackInit(TrackInit&& other) : wasMoveInit(true), wasCopyInit(other.wasCopyInit) { }
+            bool wasMoveInit = false;
+            bool wasCopyInit = false;
+        };
+
+        // Explicit constructor
+        {
+            {
+                std::pair<TrackInit, int> p({}, 3);
+                assert( p.first.wasMoveInit);
+                assert(!p.first.wasCopyInit);
+            }
+            {
+                std::pair<int, TrackInit> p(3, {});
+                assert( p.second.wasMoveInit);
+                assert(!p.second.wasCopyInit);
+            }
+        }
+
+        // Implicit constructor
+        {
+            {
+                std::pair<TrackInit, int> p = {{}, 3};
+                assert( p.first.wasMoveInit);
+                assert(!p.first.wasCopyInit);
+            }
+            {
+                std::pair<int, TrackInit> p = {3, {}};
+                assert( p.second.wasMoveInit);
+                assert(!p.second.wasCopyInit);
+            }
+        }
+    }
+#endif // TEST_STD_VER > 20
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_copy_convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_copy_convert.pass.cpp
new file mode 100644
index 0000000..13059ca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_copy_convert.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// template<class U1, class U2> constexpr
+// const pair& operator=(const pair<U1, U2>& p) const;
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// Constraints:
+// is_assignable_v<const first_type&, const U1&> is true, and
+// is_assignable_v<const second_type&, const U2&> is true.
+
+// clang-format off
+static_assert( std::is_assignable_v<const std::pair<int&, int&>&,
+                                    const std::pair<long&, long&>&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int>&,
+                                    const std::pair<long, long>&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int&>&,
+                                    const std::pair<long, long&>&>);
+static_assert(!std::is_assignable_v<const std::pair<int&, int>&,
+                                    const std::pair<long&, long>&>);
+
+static_assert(std::is_assignable_v<
+    const std::pair<AssignableFrom<ConstCopyAssign>, AssignableFrom<ConstCopyAssign>>&,
+    const std::pair<ConstCopyAssign, ConstCopyAssign>&>);
+
+static_assert(!std::is_assignable_v<
+    const std::pair<AssignableFrom<CopyAssign>, AssignableFrom<CopyAssign>>&,
+    const std::pair<CopyAssign, CopyAssign>&>);
+// clang-format on
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1  = 1;
+    int i2  = 2;
+    long j1 = 3;
+    long j2 = 4;
+    const std::pair<int&, int&> p1{i1, i2};
+    const std::pair<long&, long&> p2{j1, j2};
+    p2 = p1;
+    assert(p2.first == 1);
+    assert(p2.second == 2);
+  }
+
+  // user defined const copy assignment
+  {
+    const std::pair<ConstCopyAssign, ConstCopyAssign> p1{1, 2};
+    const std::pair<AssignableFrom<ConstCopyAssign>, AssignableFrom<ConstCopyAssign>> p2{3, 4};
+    p2 = p1;
+    assert(p2.first.v.val == 1);
+    assert(p2.second.v.val == 2);
+  }
+
+  // The correct assignment operator of the underlying type is used
+  {
+    std::pair<TracedAssignment, TracedAssignment> t1{};
+    const std::pair<AssignableFrom<TracedAssignment>, AssignableFrom<TracedAssignment>> t2{};
+    t2 = t1;
+    assert(t2.first.v.constCopyAssign == 1);
+    assert(t2.second.v.constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_copy_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_copy_pair.pass.cpp
new file mode 100644
index 0000000..52468bd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_copy_pair.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// constexpr const pair& operator=(const pair& p) const;
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// Constraints:
+// is_copy_assignable<const first_type> is true and
+// is_copy_assignable<const second_type> is true.
+
+// clang-format off
+static_assert(std::is_assignable_v<const std::pair<int&, int&>&,
+                                   const std::pair<int&, int&>&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int>&,
+                                    const std::pair<int, int>&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int&>&,
+                                    const std::pair<int, int&>&>);
+static_assert(!std::is_assignable_v<const std::pair<int&, int>&,
+                                    const std::pair<int&, int>&>);
+
+static_assert(std::is_assignable_v<const std::pair<ConstCopyAssign, ConstCopyAssign>&,
+                                   const std::pair<ConstCopyAssign, ConstCopyAssign>&>);
+static_assert(!std::is_assignable_v<const std::pair<CopyAssign, CopyAssign>&,
+                                   const std::pair<CopyAssign, CopyAssign>&>);
+
+// clang-format on
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1    = 1;
+    int i2    = 2;
+    double d1 = 3.0;
+    double d2 = 5.0;
+    const std::pair<int&, double&> p1{i1, d1};
+    const std::pair<int&, double&> p2{i2, d2};
+    p2 = p1;
+    assert(p2.first == 1);
+    assert(p2.second == 3.0);
+  }
+
+  // user defined const copy assignment
+  {
+    const std::pair<ConstCopyAssign, ConstCopyAssign> p1{1, 2};
+    const std::pair<ConstCopyAssign, ConstCopyAssign> p2{3, 4};
+    p2 = p1;
+    assert(p2.first.val == 1);
+    assert(p2.second.val == 2);
+  }
+
+  // The correct assignment operator of the underlying type is used
+  {
+    std::pair<TracedAssignment, const TracedAssignment> t1{};
+    const std::pair<TracedAssignment, const TracedAssignment> t2{};
+    t2 = t1;
+    assert(t2.first.constCopyAssign == 1);
+    assert(t2.second.constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_move_convert.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_move_convert.pass.cpp
new file mode 100644
index 0000000..ee3804d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_move_convert.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// template <class U1, class U2>
+// constexpr const pair& operator=(pair<U1, U2>&& p) const;
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// Constraints:
+// is_assignable<const first_type&, U1> is true and
+// is_assignable<const second_type&, U2> is true.
+
+// clang-format off
+static_assert( std::is_assignable_v<const std::pair<int&&, int&&>&,
+                                    std::pair<long&&, long&&>&&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int>&,
+                                    std::pair<long, long>&&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int&&>&,
+                                    std::pair<long, long&&>&&>);
+static_assert(!std::is_assignable_v<const std::pair<int&&, int>&,
+                                    std::pair<long&&, long>&&>);
+
+static_assert(std::is_assignable_v<
+    const std::pair<AssignableFrom<ConstMoveAssign>, AssignableFrom<ConstMoveAssign>>&,
+    std::pair<ConstMoveAssign, ConstMoveAssign>&&>);
+
+static_assert(!std::is_assignable_v<
+    const std::pair<AssignableFrom<MoveAssign>, AssignableFrom<MoveAssign>>&,
+    std::pair<MoveAssign, MoveAssign>&&>);
+// clang-format on
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1  = 1;
+    int i2  = 2;
+    long j1 = 3;
+    long j2 = 4;
+    std::pair<int&&, int&&> p1{std::move(i1), std::move(i2)};
+    const std::pair<long&&, long&&> p2{std::move(j1), std::move(j2)};
+    p2 = std::move(p1);
+    assert(p2.first == 1);
+    assert(p2.second == 2);
+  }
+
+  // user defined const move assignment
+  {
+    std::pair<ConstMoveAssign, ConstMoveAssign> p1{1, 2};
+    const std::pair<AssignableFrom<ConstMoveAssign>, AssignableFrom<ConstMoveAssign>> p2{3, 4};
+    p2 = std::move(p1);
+    assert(p2.first.v.val == 1);
+    assert(p2.second.v.val == 2);
+  }
+
+  // The correct assignment operator of the underlying type is used
+  {
+    std::pair<TracedAssignment, TracedAssignment> t1{};
+    const std::pair<AssignableFrom<TracedAssignment>, AssignableFrom<TracedAssignment>> t2{};
+    t2 = std::move(t1);
+    assert(t2.first.v.constMoveAssign == 1);
+    assert(t2.second.v.constMoveAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_move_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_move_pair.pass.cpp
new file mode 100644
index 0000000..585d2aa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_move_pair.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// constexpr const pair& operator=(pair&& p) const;
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+#include "copy_move_types.h"
+
+// Constraints:
+// is_assignable<const first_type&, first_type> is true and
+// is_assignable<const second_type&, second_type> is true.
+
+// clang-format off
+static_assert(std::is_assignable_v<const std::pair<int&&, int&&>&,
+                                   std::pair<int&&, int&&>&&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int>&,
+                                    std::pair<int, int>&&>);
+static_assert(!std::is_assignable_v<const std::pair<int, int&&>&,
+                                    std::pair<int, int&&>&&>);
+static_assert(!std::is_assignable_v<const std::pair<int&&, int>&,
+                                    std::pair<int&&, int>&&>);
+
+static_assert(std::is_assignable_v<const std::pair<ConstMoveAssign, ConstMoveAssign>&,
+                                   std::pair<ConstMoveAssign, ConstMoveAssign>&&>);
+static_assert(!std::is_assignable_v<const std::pair<MoveAssign, MoveAssign>&,
+                                   std::pair<MoveAssign, MoveAssign>&&>);
+
+// clang-format on
+
+constexpr bool test() {
+  // reference types
+  {
+    int i1    = 1;
+    int i2    = 2;
+    double d1 = 3.0;
+    double d2 = 5.0;
+    std::pair<int&&, double&&> p1{std::move(i1), std::move(d1)};
+    const std::pair<int&&, double&&> p2{std::move(i2), std::move(d2)};
+    p2 = std::move(p1);
+    assert(p2.first == 1);
+    assert(p2.second == 3.0);
+  }
+
+  // user defined const move assignment
+  {
+    std::pair<ConstMoveAssign, ConstMoveAssign> p1{1, 2};
+    const std::pair<ConstMoveAssign, ConstMoveAssign> p2{3, 4};
+    p2 = std::move(p1);
+    assert(p2.first.val == 1);
+    assert(p2.second.val == 2);
+  }
+
+  // The correct assignment operator of the underlying type is used
+  {
+    std::pair<TracedAssignment, const TracedAssignment> t1{};
+    const std::pair<TracedAssignment, const TracedAssignment> t2{};
+    t2 = std::move(t1);
+    assert(t2.first.constMoveAssign == 1);
+    assert(t2.second.constCopyAssign == 1);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_pair_U_V.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_pair_U_V.pass.cpp
new file mode 100644
index 0000000..2df3372
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_const_pair_U_V.pass.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<class U, class V> pair& operator=(const pair<U, V>& p);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#if TEST_STD_VER >= 11
+#include "archetypes.h"
+#endif
+
+struct CopyAssignableInt {
+  CopyAssignableInt& operator=(int&) { return *this; }
+};
+
+struct Unrelated {};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<int, short> P1;
+    typedef std::pair<double, long> P2;
+    P1 p1(3, static_cast<short>(4));
+    P2 p2;
+    p2 = p1;
+    assert(p2.first == 3);
+    assert(p2.second == 4);
+  }
+#if TEST_STD_VER >= 20
+  {
+    using C = ConstexprTestTypes::TestType;
+    using P = std::pair<int, C>;
+    using T = std::pair<long, C>;
+    const T t(42, -42);
+    P p(101, 101);
+    p = t;
+    assert(p.first == 42);
+    assert(p.second.value == -42);
+  }
+#elif TEST_STD_VER >= 11
+  {
+    using C = TestTypes::TestType;
+    using P = std::pair<int, C>;
+    using T = std::pair<long, C>;
+    const T t(42, -42);
+    P p(101, 101);
+    C::reset_constructors();
+    p = t;
+    assert(C::constructed == 0);
+    assert(C::assigned == 1);
+    assert(C::copy_assigned == 1);
+    assert(C::move_assigned == 0);
+    assert(p.first == 42);
+    assert(p.second.value == -42);
+  }
+  { // test const requirement
+    using T = std::pair<CopyAssignableInt, CopyAssignableInt>;
+    using P = std::pair<int, int>;
+    static_assert(!std::is_assignable<T&, P const>::value, "");
+  }
+  {
+    using T = std::pair<int, Unrelated>;
+    using P = std::pair<Unrelated, int>;
+    static_assert(!std::is_assignable<T&, P&>::value, "");
+    static_assert(!std::is_assignable<P&, T&>::value, "");
+  }
+#endif
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_pair.pass.cpp
new file mode 100644
index 0000000..253bd1b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_pair.pass.cpp
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair& operator=(pair const& p);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+struct CountAssign {
+  int copied = 0;
+  int moved = 0;
+  TEST_CONSTEXPR_CXX20 CountAssign() = default;
+  TEST_CONSTEXPR_CXX20 CountAssign& operator=(CountAssign const&) {
+    ++copied;
+    return *this;
+  }
+  TEST_CONSTEXPR_CXX20 CountAssign& operator=(CountAssign&&) {
+    ++moved;
+    return *this;
+  }
+};
+
+struct Incomplete;
+extern Incomplete inc_obj;
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<ConstexprTestTypes::CopyOnly, int> P;
+    const P p1(ConstexprTestTypes::CopyOnly(), short{4});
+    P p2;
+    p2 = p1;
+    assert(p2.second == 4);
+  }
+  {
+    using P = std::pair<int&, int&&>;
+    int x = 42;
+    int y = 101;
+    int x2 = -1;
+    int y2 = 300;
+    P p1(x, std::move(y));
+    P p2(x2, std::move(y2));
+    p1 = p2;
+    assert(p1.first == x2);
+    assert(p1.second == y2);
+  }
+  {
+    using P = std::pair<int, ConstexprTestTypes::NonCopyable>;
+    static_assert(!std::is_copy_assignable<P>::value, "");
+  }
+  {
+    using P = std::pair<CountAssign, ConstexprTestTypes::Copyable>;
+    static_assert(std::is_copy_assignable<P>::value, "");
+    P p;
+    P p2;
+    p = p2;
+    assert(p.first.copied == 1);
+    assert(p.first.moved == 0);
+    assert(p2.first.copied == 0);
+    assert(p2.first.moved == 0);
+  }
+  {
+    using P = std::pair<int, ConstexprTestTypes::MoveAssignOnly>;
+    static_assert(!std::is_copy_assignable<P>::value, "");
+  }
+  {
+    using P = std::pair<int, std::unique_ptr<int> >;
+    static_assert(!std::is_copy_assignable<P>::value, "");
+  }
+  {
+    using P = std::pair<int, Incomplete&>;
+    static_assert(!std::is_copy_assignable<P>::value, "");
+    P p(42, inc_obj);
+    assert(&p.second == &inc_obj);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
+
+struct Incomplete {};
+Incomplete inc_obj;
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_pair_cxx03.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_pair_cxx03.pass.cpp
new file mode 100644
index 0000000..4c076c8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_pair_cxx03.pass.cpp
@@ -0,0 +1,52 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair& operator=(pair const& p);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct NonAssignable {
+  NonAssignable() {}
+private:
+  NonAssignable& operator=(NonAssignable const&);
+};
+
+struct Incomplete;
+extern Incomplete inc_obj;
+
+int main(int, char**)
+{
+    {
+    // Test that we don't constrain the assignment operator in C++03 mode.
+    // Since we don't have access control SFINAE having pair evaluate SFINAE
+    // may cause a hard error.
+    typedef std::pair<int, NonAssignable> P;
+    static_assert(std::is_copy_assignable<P>::value, "");
+    }
+    {
+    typedef std::pair<int, Incomplete&> P;
+    static_assert(std::is_copy_assignable<P>::value, "");
+    P p(42, inc_obj);
+    assert(&p.second == &inc_obj);
+    }
+
+  return 0;
+}
+
+struct Incomplete {};
+Incomplete inc_obj;
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair.pass.cpp
new file mode 100644
index 0000000..8e5d9c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair.pass.cpp
@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair& operator=(pair&& p);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+struct CountAssign {
+  int copied = 0;
+  int moved = 0;
+  TEST_CONSTEXPR_CXX20 CountAssign() = default;
+  TEST_CONSTEXPR_CXX20 CountAssign& operator=(CountAssign const&) {
+    ++copied;
+    return *this;
+  }
+  TEST_CONSTEXPR_CXX20 CountAssign& operator=(CountAssign&&) {
+    ++moved;
+    return *this;
+  }
+};
+
+struct NotAssignable {
+  NotAssignable& operator=(NotAssignable const&) = delete;
+  NotAssignable& operator=(NotAssignable&&) = delete;
+};
+
+struct MoveAssignable {
+  MoveAssignable& operator=(MoveAssignable const&) = delete;
+  MoveAssignable& operator=(MoveAssignable&&) = default;
+};
+
+struct CopyAssignable {
+  CopyAssignable& operator=(CopyAssignable const&) = default;
+  CopyAssignable& operator=(CopyAssignable&&) = delete;
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<ConstexprTestTypes::MoveOnly, int> P;
+    P p1(3, 4);
+    P p2;
+    p2 = std::move(p1);
+    assert(p2.first.value == 3);
+    assert(p2.second == 4);
+  }
+  {
+    using P = std::pair<int&, int&&>;
+    int x = 42;
+    int y = 101;
+    int x2 = -1;
+    int y2 = 300;
+    P p1(x, std::move(y));
+    P p2(x2, std::move(y2));
+    p1 = std::move(p2);
+    assert(p1.first == x2);
+    assert(p1.second == y2);
+  }
+  {
+    using P = std::pair<int, ConstexprTestTypes::DefaultOnly>;
+    static_assert(!std::is_move_assignable<P>::value, "");
+  }
+  {
+    // The move decays to the copy constructor
+    using P = std::pair<CountAssign, ConstexprTestTypes::CopyOnly>;
+    static_assert(std::is_move_assignable<P>::value, "");
+    P p;
+    P p2;
+    p = std::move(p2);
+    assert(p.first.moved == 0);
+    assert(p.first.copied == 1);
+    assert(p2.first.moved == 0);
+    assert(p2.first.copied == 0);
+  }
+  {
+    using P = std::pair<CountAssign, ConstexprTestTypes::MoveOnly>;
+    static_assert(std::is_move_assignable<P>::value, "");
+    P p;
+    P p2;
+    p = std::move(p2);
+    assert(p.first.moved == 1);
+    assert(p.first.copied == 0);
+    assert(p2.first.moved == 0);
+    assert(p2.first.copied == 0);
+  }
+  {
+    using P1 = std::pair<int, NotAssignable>;
+    using P2 = std::pair<NotAssignable, int>;
+    using P3 = std::pair<NotAssignable, NotAssignable>;
+    static_assert(!std::is_move_assignable<P1>::value, "");
+    static_assert(!std::is_move_assignable<P2>::value, "");
+    static_assert(!std::is_move_assignable<P3>::value, "");
+  }
+  {
+    // We assign through the reference and don't move out of the incoming ref,
+    // so this doesn't work (but would if the type were CopyAssignable).
+    using P1 = std::pair<MoveAssignable&, int>;
+    static_assert(!std::is_move_assignable<P1>::value, "");
+
+    // ... works if it's CopyAssignable
+    using P2 = std::pair<CopyAssignable&, int>;
+    static_assert(std::is_move_assignable<P2>::value, "");
+
+    // For rvalue-references, we can move-assign if the type is MoveAssignable
+    // or CopyAssignable (since in the worst case the move will decay into a copy).
+    using P3 = std::pair<MoveAssignable&&, int>;
+    using P4 = std::pair<CopyAssignable&&, int>;
+    static_assert(std::is_move_assignable<P3>::value, "");
+    static_assert(std::is_move_assignable<P4>::value, "");
+
+    // In all cases, we can't move-assign if the types are not assignable,
+    // since we assign through the reference.
+    using P5 = std::pair<NotAssignable&, int>;
+    using P6 = std::pair<NotAssignable&&, int>;
+    static_assert(!std::is_move_assignable<P5>::value, "");
+    static_assert(!std::is_move_assignable<P6>::value, "");
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair_U_V.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair_U_V.pass.cpp
new file mode 100644
index 0000000..581ec33
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair_U_V.pass.cpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template<class U, class V> pair& operator=(pair<U, V>&& p);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+struct Derived : ConstexprTestTypes::MoveOnly {
+  Derived() = default;
+  TEST_CONSTEXPR_CXX20 Derived(ConstexprTestTypes::MoveOnly&&){};
+};
+struct CountAssign {
+  int copied = 0;
+  int moved = 0;
+  TEST_CONSTEXPR_CXX20 CountAssign() = default;
+  TEST_CONSTEXPR_CXX20 CountAssign(const int){};
+  TEST_CONSTEXPR_CXX20 CountAssign& operator=(CountAssign const&) {
+    ++copied;
+    return *this;
+  }
+  TEST_CONSTEXPR_CXX20 CountAssign& operator=(CountAssign&&) {
+    ++moved;
+    return *this;
+  }
+};
+
+struct CopyAssignableInt {
+  CopyAssignableInt& operator=(int&) { return *this; }
+};
+
+struct NotAssignable {
+  NotAssignable& operator=(NotAssignable const&) = delete;
+  NotAssignable& operator=(NotAssignable&&) = delete;
+};
+
+struct MoveAssignable {
+  MoveAssignable& operator=(MoveAssignable const&) = delete;
+  MoveAssignable& operator=(MoveAssignable&&) = default;
+};
+
+struct CopyAssignable {
+  CopyAssignable& operator=(CopyAssignable const&) = default;
+  CopyAssignable& operator=(CopyAssignable&&) = delete;
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<Derived, short> P1;
+    typedef std::pair<ConstexprTestTypes::MoveOnly, long> P2;
+    P1 p1(Derived(), static_cast<short>(4));
+    P2 p2;
+    p2 = std::move(p1);
+    assert(p2.second == 4);
+  }
+  {
+    using P = std::pair<int, CountAssign>;
+    using T = std::pair<long, CountAssign>;
+    T t(42, -42);
+    P p(101, 101);
+    p = std::move(t);
+    assert(p.first == 42);
+    assert(p.second.moved == 1);
+    assert(p.second.copied == 0);
+    assert(t.second.moved == 0);
+    assert(t.second.copied == 0);
+  }
+  { // test const requirement
+    using T = std::pair<CopyAssignableInt, CopyAssignableInt>;
+    using P = std::pair<int, int>;
+    static_assert(!std::is_assignable<T&, P&&>::value, "");
+    static_assert(!std::is_assignable<P&, T&&>::value, "");
+  }
+  {
+    // Make sure we can't move-assign from a pair containing a reference
+    // if that type isn't copy-constructible (since otherwise we'd be
+    // stealing the object through the reference).
+    using P1 = std::pair<MoveAssignable, long>;
+    using P2 = std::pair<MoveAssignable&, int>;
+    static_assert(!std::is_assignable<P1&, P2&&>::value, "");
+
+    // ... but this should work since we're going to steal out of the
+    // incoming rvalue reference.
+    using P3 = std::pair<MoveAssignable, long>;
+    using P4 = std::pair<MoveAssignable&&, int>;
+    static_assert(std::is_assignable<P3&, P4&&>::value, "");
+  }
+  {
+    // We assign through the reference and don't move out of the incoming ref,
+    // so this doesn't work (but would if the type were CopyAssignable).
+    {
+      using P1 = std::pair<MoveAssignable&, long>;
+      using P2 = std::pair<MoveAssignable&, int>;
+      static_assert(!std::is_assignable<P1&, P2&&>::value, "");
+    }
+
+    // ... works if it's CopyAssignable
+    {
+      using P1 = std::pair<CopyAssignable&, long>;
+      using P2 = std::pair<CopyAssignable&, int>;
+      static_assert(std::is_assignable<P1&, P2&&>::value, "");
+    }
+
+    // For rvalue-references, we can move-assign if the type is MoveAssignable,
+    // or CopyAssignable (since in the worst case the move will decay into a copy).
+    {
+      using P1 = std::pair<MoveAssignable&&, long>;
+      using P2 = std::pair<MoveAssignable&&, int>;
+      static_assert(std::is_assignable<P1&, P2&&>::value, "");
+
+      using P3 = std::pair<CopyAssignable&&, long>;
+      using P4 = std::pair<CopyAssignable&&, int>;
+      static_assert(std::is_assignable<P3&, P4&&>::value, "");
+    }
+
+    // In all cases, we can't move-assign if the types are not assignable,
+    // since we assign through the reference.
+    {
+      using P1 = std::pair<NotAssignable&, long>;
+      using P2 = std::pair<NotAssignable&, int>;
+      static_assert(!std::is_assignable<P1&, P2&&>::value, "");
+
+      using P3 = std::pair<NotAssignable&&, long>;
+      using P4 = std::pair<NotAssignable&&, int>;
+      static_assert(!std::is_assignable<P3&, P4&&>::value, "");
+    }
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp
new file mode 100644
index 0000000..89c3921
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_first_const_second.pass.cpp
@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair(const T1& x, const T2& y);
+
+#include <utility>
+#include <cassert>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+
+#include "test_macros.h"
+using namespace ImplicitTypes; // Get implicitly archetypes
+
+struct ExplicitT {
+  constexpr explicit ExplicitT(int x) : value(x) {}
+  constexpr explicit ExplicitT(ExplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+struct ImplicitT {
+  constexpr ImplicitT(int x) : value(x) {}
+  constexpr ImplicitT(ImplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+template <class T1,
+          bool CanCopy = true, bool CanConvert = CanCopy>
+void test_sfinae() {
+    using P1 = std::pair<T1, int>;
+    using P2 = std::pair<int, T1>;
+    using T1Arg = T1 const&;
+    using T2 = int const&;
+    static_assert(std::is_constructible<P1, T1Arg, T2>::value == CanCopy, "");
+    static_assert(test_convertible<P1,   T1Arg, T2>() == CanConvert, "");
+    static_assert(std::is_constructible<P2, T2,   T1Arg>::value == CanCopy, "");
+    static_assert(test_convertible<P2,   T2,   T1Arg>() == CanConvert, "");
+}
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<float, short*> P;
+        P p(3.5f, 0);
+        assert(p.first == 3.5f);
+        assert(p.second == nullptr);
+    }
+    {
+        typedef std::pair<ImplicitT, int> P;
+        P p(1, 2);
+        assert(p.first.value == 1);
+        assert(p.second == 2);
+    }
+    {
+        test_sfinae<AllCtors>();
+        test_sfinae<ExplicitTypes::AllCtors, true, false>();
+        test_sfinae<CopyOnly>();
+        test_sfinae<ExplicitTypes::CopyOnly, true, false>();
+        test_sfinae<MoveOnly, false>();
+        test_sfinae<ExplicitTypes::MoveOnly, false>();
+        test_sfinae<NonCopyable, false>();
+        test_sfinae<ExplicitTypes::NonCopyable, false>();
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<float, short*> P;
+        constexpr P p(3.5f, 0);
+        static_assert(p.first == 3.5f, "");
+        static_assert(p.second == nullptr, "");
+    }
+    {
+        using P = std::pair<ExplicitT, int>;
+        constexpr ExplicitT e(42);
+        constexpr int x = 10;
+        constexpr P p(e, x);
+        static_assert(p.first.value == 42, "");
+        static_assert(p.second == 10, "");
+    }
+    {
+        using P = std::pair<ImplicitT, int>;
+        constexpr ImplicitT e(42);
+        constexpr int x = 10;
+        constexpr P p = {e, x};
+        static_assert(p.first.value == 42, "");
+        static_assert(p.second == 10, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_first_const_second_cxx03.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_first_const_second_cxx03.pass.cpp
new file mode 100644
index 0000000..394ee0f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_first_const_second_cxx03.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair(const T1& x, const T2& y);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+class A
+{
+    int data_;
+public:
+    A(int data) : data_(data) {}
+
+    bool operator==(const A& a) const {return data_ == a.data_;}
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<float, short*> P;
+        P p(3.5f, 0);
+        assert(p.first == 3.5f);
+        assert(p.second == nullptr);
+    }
+    {
+        typedef std::pair<A, int> P;
+        P p(1, 2);
+        assert(p.first == A(1));
+        assert(p.second == 2);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_pair_U_V.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_pair_U_V.pass.cpp
new file mode 100644
index 0000000..42ddb4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_pair_U_V.pass.cpp
@@ -0,0 +1,201 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class U, class V> EXPLICIT constexpr pair(const pair<U, V>& p);
+
+#include <utility>
+#include <cassert>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+
+#include "test_macros.h"
+using namespace ImplicitTypes; // Get implicitly archetypes
+
+template <class T1, class U1, bool CanCopy = true, bool CanConvert = CanCopy>
+TEST_CONSTEXPR_CXX20 void test_pair_const() {
+  using P1 = std::pair<T1, int>;
+  using P2 = std::pair<int, T1>;
+  using UP1 = std::pair<U1, int> const&;
+  using UP2 = std::pair<int, U1> const&;
+  static_assert(std::is_constructible<P1, UP1>::value == CanCopy, "");
+  static_assert(test_convertible<P1, UP1>() == CanConvert, "");
+  static_assert(std::is_constructible<P2, UP2>::value == CanCopy, "");
+  static_assert(test_convertible<P2, UP2>() == CanConvert, "");
+}
+
+template <class T, class U>
+struct DPair : public std::pair<T, U> {
+  using Base = std::pair<T, U>;
+  using Base::Base;
+};
+
+struct ExplicitT {
+  constexpr explicit ExplicitT(int x) : value(x) {}
+  constexpr explicit ExplicitT(ExplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+struct ImplicitT {
+  constexpr ImplicitT(int x) : value(x) {}
+  constexpr ImplicitT(ImplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<int, int> P1;
+    typedef std::pair<double, long> P2;
+    const P1 p1(3, 4);
+    const P2 p2 = p1;
+    assert(p2.first == 3);
+    assert(p2.second == 4);
+  }
+  {
+    // We allow derived types to use this constructor
+    using P1 = DPair<long, long>;
+    using P2 = std::pair<int, int>;
+    P1 p1(42, 101);
+    P2 p2(p1);
+    assert(p2.first == 42);
+    assert(p2.second == 101);
+  }
+  {
+    test_pair_const<AllCtors, AllCtors>(); // copy construction
+    test_pair_const<AllCtors, AllCtors&>();
+    test_pair_const<AllCtors, AllCtors&&>();
+    test_pair_const<AllCtors, const AllCtors&>();
+    test_pair_const<AllCtors, const AllCtors&&>();
+
+    test_pair_const<ExplicitTypes::AllCtors,
+                    ExplicitTypes::AllCtors>(); // copy construction
+    test_pair_const<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors&, true,
+                    false>();
+    test_pair_const<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors&&, true,
+                    false>();
+    test_pair_const<ExplicitTypes::AllCtors, const ExplicitTypes::AllCtors&,
+                    true, false>();
+    test_pair_const<ExplicitTypes::AllCtors, const ExplicitTypes::AllCtors&&,
+                    true, false>();
+
+    test_pair_const<MoveOnly, MoveOnly, false>(); // copy construction
+    test_pair_const<MoveOnly, MoveOnly&, false>();
+    test_pair_const<MoveOnly, MoveOnly&&, false>();
+
+    test_pair_const<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly,
+                    false>(); // copy construction
+    test_pair_const<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly&, false>();
+    test_pair_const<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly&&,
+                    false>();
+
+    test_pair_const<CopyOnly, CopyOnly>();
+    test_pair_const<CopyOnly, CopyOnly&>();
+    test_pair_const<CopyOnly, CopyOnly&&>();
+
+    test_pair_const<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly>();
+    test_pair_const<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly&, true,
+                    false>();
+    test_pair_const<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly&&, true,
+                    false>();
+
+    test_pair_const<NonCopyable, NonCopyable, false>();
+    test_pair_const<NonCopyable, NonCopyable&, false>();
+    test_pair_const<NonCopyable, NonCopyable&&, false>();
+    test_pair_const<NonCopyable, const NonCopyable&, false>();
+    test_pair_const<NonCopyable, const NonCopyable&&, false>();
+  }
+
+  { // Test construction of references
+    test_pair_const<NonCopyable&, NonCopyable&>();
+    test_pair_const<NonCopyable&, NonCopyable&&>();
+    test_pair_const<NonCopyable&, NonCopyable const&, false>();
+    test_pair_const<NonCopyable const&, NonCopyable&&>();
+    test_pair_const<NonCopyable&&, NonCopyable&&, false>();
+
+    test_pair_const<ConvertingType&, int, false>();
+    test_pair_const<ExplicitTypes::ConvertingType&, int, false>();
+    // Unfortunately the below conversions are allowed and create dangling
+    // references.
+    //test_pair_const<ConvertingType&&, int>();
+    //test_pair_const<ConvertingType const&, int>();
+    //test_pair_const<ConvertingType const&&, int>();
+    // But these are not because the converting constructor is explicit.
+    test_pair_const<ExplicitTypes::ConvertingType&&, int, false>();
+    test_pair_const<ExplicitTypes::ConvertingType const&, int, false>();
+    test_pair_const<ExplicitTypes::ConvertingType const&&, int, false>();
+  }
+  {
+    test_pair_const<AllCtors, int, false>();
+    test_pair_const<ExplicitTypes::AllCtors, int, false>();
+    test_pair_const<ConvertingType, int>();
+    test_pair_const<ExplicitTypes::ConvertingType, int, true, false>();
+
+    test_pair_const<ConvertingType, int>();
+    test_pair_const<ConvertingType, ConvertingType>();
+    test_pair_const<ConvertingType, ConvertingType const&>();
+    test_pair_const<ConvertingType, ConvertingType&>();
+    test_pair_const<ConvertingType, ConvertingType&&>();
+
+    test_pair_const<ExplicitTypes::ConvertingType, int, true, false>();
+    test_pair_const<ExplicitTypes::ConvertingType, int&, true, false>();
+    test_pair_const<ExplicitTypes::ConvertingType, const int&, true, false>();
+    test_pair_const<ExplicitTypes::ConvertingType, int&&, true, false>();
+    test_pair_const<ExplicitTypes::ConvertingType, const int&&, true, false>();
+
+    test_pair_const<ExplicitTypes::ConvertingType,
+                    ExplicitTypes::ConvertingType>();
+    test_pair_const<ExplicitTypes::ConvertingType,
+                    ExplicitTypes::ConvertingType const&, true, false>();
+    test_pair_const<ExplicitTypes::ConvertingType,
+                    ExplicitTypes::ConvertingType&, true, false>();
+    test_pair_const<ExplicitTypes::ConvertingType,
+                    ExplicitTypes::ConvertingType&&, true, false>();
+  }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, int> P1;
+        typedef std::pair<double, long> P2;
+        constexpr P1 p1(3, 4);
+        constexpr P2 p2 = p1;
+        static_assert(p2.first == 3, "");
+        static_assert(p2.second == 4, "");
+    }
+    {
+        using P1 = std::pair<int, int>;
+        using P2 = std::pair<ExplicitT, ExplicitT>;
+        constexpr P1 p1(42, 101);
+        constexpr P2 p2(p1);
+        static_assert(p2.first.value == 42, "");
+        static_assert(p2.second.value == 101, "");
+    }
+    {
+      using P1 = std::pair<int, int>;
+      using P2 = std::pair<ImplicitT, ImplicitT>;
+      constexpr P1 p1(42, 101);
+      constexpr P2 p2 = p1;
+      static_assert(p2.first.value == 42, "");
+      static_assert(p2.second.value == 101, "");
+    }
+#endif
+    return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_pair_U_V_cxx03.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_pair_U_V_cxx03.pass.cpp
new file mode 100644
index 0000000..b18ced0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/const_pair_U_V_cxx03.pass.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class U, class V> pair(const pair<U, V>& p);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P1;
+        typedef std::pair<double, long> P2;
+        const P1 p1(3, static_cast<short>(4));
+        const P2 p2 = p1;
+        assert(p2.first == 3);
+        assert(p2.second == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/copy_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/copy_ctor.pass.cpp
new file mode 100644
index 0000000..81a3290
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/copy_ctor.pass.cpp
@@ -0,0 +1,40 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair(const pair&) = default;
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P1;
+        P1 p1(3, static_cast<short>(4));
+        P1 p2 = p1;
+        assert(p2.first == 3);
+        assert(p2.second == 4);
+    }
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, short> P1;
+        constexpr P1 p1(3, static_cast<short>(4));
+        constexpr P1 p2 = p1;
+        static_assert(p2.first == 3, "");
+        static_assert(p2.second == 4, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.brace-init.P1951.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.brace-init.P1951.pass.cpp
new file mode 100644
index 0000000..aeb7e45
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.brace-init.P1951.pass.cpp
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++11 || c++14 || c++17 || c++20
+
+// This test makes sure that we don't apply P1951 before C++23, since that is
+// a breaking change. The examples in this test are taken from Richard Smith's
+// comments on https://llvm.org/D109066.
+
+#include <cassert>
+#include <utility>
+#include <vector>
+
+struct A {
+    int *p_;
+    A(int *p) : p_(p) { *p_ += 1; }
+    A(const A& a) : p_(a.p_) { *p_ += 1; }
+    ~A() { *p_ -= 1; }
+};
+
+int main(int, char**) {
+    // Example 1:
+    // Without P1951, we call the `pair(int, const A&)` constructor (the converting constructor is not usable because
+    // we can't deduce from an initializer list), which creates the A temporary as part of the call to f. With P1951,
+    // we call the `pair(U&&, V&&)` constructor, which creates a A temporary inside the pair constructor, and that
+    // temporary doesn't live long enough any more.
+    {
+        int i = 0;
+        auto f = [&](std::pair<std::vector<int>, const A&>) { assert(i >= 1); };
+        f({{42, 43}, &i});
+    }
+
+    // Example 2:
+    // Here, n doesn't need to be captured if we call the `pair(const int&, const long&)` constructor, because
+    // the lvalue-to-rvalue conversion happens in the lambda. But if we call the `pair(U&&, V&&)` constructor
+    // (deducing V = int), then n does need to be captured.
+    {
+        const int n = 5;
+        (void) []{ std::pair<int, long>({1}, n); };
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.brace-init.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.brace-init.pass.cpp
new file mode 100644
index 0000000..f4f55b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.brace-init.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// TODO: Revisit this test once we have more information
+//       with https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102247
+// XFAIL: gcc
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+//
+// pair(const T1&, const T2&);
+// template<class U = T1, class V = T2> pair(U&&, V&&);
+
+// This test checks support for brace-initialization of pairs.
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct ExplicitT {
+  constexpr explicit ExplicitT(int x) : value(x) {}
+  constexpr explicit ExplicitT(ExplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+struct ImplicitT {
+  constexpr ImplicitT(int x) : value(x) {}
+  constexpr ImplicitT(ImplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+template <class T, class = decltype(std::pair<T, T>({}, {}))>
+constexpr bool can_construct_with_brace_init(int) { return true; }
+template <class T>
+constexpr bool can_construct_with_brace_init(...) { return false; }
+
+#if TEST_STD_VER >= 17 // CTAD isn't supported before C++17
+template <class T, class = decltype(std::pair(T{}, {}))>
+constexpr bool can_construct_with_ctad_brace_init(int) { return true; }
+template <class T>
+constexpr bool can_construct_with_ctad_brace_init(...) { return false; }
+#endif
+
+struct BraceInit { BraceInit() = default; };
+struct NoBraceInit { NoBraceInit(int); };
+struct ExplicitBraceInit { explicit ExplicitBraceInit() = default; };
+
+constexpr int explicit_vs_implicit_brace_init(std::pair<ExplicitBraceInit, ExplicitBraceInit>) { return 1; }
+constexpr int explicit_vs_implicit_brace_init(std::pair<BraceInit, BraceInit>) { return 2; }
+
+TEST_CONSTEXPR_CXX14 bool test() {
+    // Explicit constructor
+    {
+        std::pair<ExplicitT, BraceInit> p1(ExplicitT{42}, {});
+        assert(p1.first.value == 42);
+
+        std::pair<ExplicitT, BraceInit> p2{ExplicitT{42}, {}};
+        assert(p2.first.value == 42);
+    }
+    {
+        std::pair<BraceInit, ExplicitT> p1({}, ExplicitT{42});
+        assert(p1.second.value == 42);
+
+        std::pair<BraceInit, ExplicitT> p2{{}, ExplicitT{42}};
+        assert(p2.second.value == 42);
+    }
+    {
+        std::pair<BraceInit, BraceInit> p{{}, {}};
+        (void)p;
+    }
+
+    // Implicit constructor
+    {
+        std::pair<ImplicitT, BraceInit> p = {42, {}};
+        assert(p.first.value == 42);
+    }
+    {
+        std::pair<BraceInit, ImplicitT> p = {{}, 42};
+        assert(p.second.value == 42);
+    }
+    {
+        std::pair<BraceInit, BraceInit> p = {{}, {}};
+        (void)p;
+    }
+
+    // SFINAE-friendliness of some invalid cases
+    {
+        static_assert( can_construct_with_brace_init<BraceInit>(0), "");
+        static_assert(!can_construct_with_brace_init<NoBraceInit>(0), "");
+
+#if TEST_STD_VER >= 17
+        // CTAD with {} should never work, since we can't possibly deduce the types
+        static_assert(!can_construct_with_ctad_brace_init<BraceInit>(0), "");
+        static_assert(!can_construct_with_ctad_brace_init<int>(0), "");
+#endif
+    }
+
+    // Make sure there is no ambiguity between the explicit and the non-explicit constructors
+    {
+        assert(explicit_vs_implicit_brace_init({{}, {}}) == 2);
+    }
+
+    return true;
+}
+
+int main(int, char**) {
+    test();
+#if TEST_STD_VER > 11
+    static_assert(test(), "");
+#endif
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor_pair_U_V_const_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor_pair_U_V_const_move.pass.cpp
new file mode 100644
index 0000000..d3fbf6f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor_pair_U_V_const_move.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// template <class U1, class U2>
+//   constexpr explicit(see below) pair(const pair<U1, U2>&& p);
+
+#include <cassert>
+#include <utility>
+
+#include "copy_move_types.h"
+#include "test_macros.h"
+
+// Constraints:
+// is_constructible_v<T1, decltype(get<0>(FWD(p)))> is true and
+// is_constructible_v<T2, decltype(get<1>(FWD(p)))> is true.
+struct X {};
+struct Y {};
+struct NotConvertibleToXorY {};
+
+static_assert(std::is_constructible_v<std::pair<X, Y>, const std::pair<X, Y>&&>);
+static_assert(!std::is_constructible_v<std::pair<X, Y>, const std::pair<NotConvertibleToXorY, Y>&&>);
+static_assert(!std::is_constructible_v<std::pair<X, Y>, const std::pair<X, NotConvertibleToXorY>&&>);
+static_assert(!std::is_constructible_v<std::pair<X, Y>, const std::pair<NotConvertibleToXorY, NotConvertibleToXorY>&&>);
+
+// The expression inside explicit is equivalent to:
+// !is_convertible_v<decltype(get<0>(FWD(p))), first_type> ||
+// !is_convertible_v<decltype(get<1>(FWD(p))), second_type>.
+// clang-format off
+static_assert( std::is_convertible_v<const std::pair<X, Y>&&,
+                                     std::pair<ConvertibleFrom<X>, ConvertibleFrom<Y>>>);
+static_assert(!std::is_convertible_v<const std::pair<X, Y>&&,
+                                     std::pair<ConvertibleFrom<X>, ExplicitConstructibleFrom<Y>>>);
+static_assert(!std::is_convertible_v<const std::pair<X, Y>&&,
+                                     std::pair<ExplicitConstructibleFrom<X>, ConvertibleFrom<Y>>>);
+static_assert(!std::is_convertible_v<const std::pair<X, Y>&&,
+                                     std::pair<ExplicitConstructibleFrom<X>, ExplicitConstructibleFrom<Y>>>);
+// clang-format on
+
+constexpr bool test() {
+  // simple case: init pair<const T&&, const U&&> from const pair<T, U>&&
+  {
+    const std::pair<int, int> p1{1, 2};
+    std::pair<const int&&, const int&&> p2{std::move(p1)};
+    assert(&(p2.first) == &(p1.first));
+    assert(&(p2.second) == &(p1.second));
+  }
+
+  // test implicit conversions.
+  {
+    const std::pair<ConstMove, int> p1{1, 2};
+    std::pair<ConvertibleFrom<ConstMove>, ConvertibleFrom<int>> p2 = std::move(p1);
+    assert(p2.first.v.val == 1);
+    assert(p2.second.v == 2);
+  }
+
+  // test explicit conversions.
+  {
+    const std::pair<ConstMove, int> p1{1, 2};
+    std::pair<ExplicitConstructibleFrom<ConstMove>, ExplicitConstructibleFrom<int>> p2{std::move(p1)};
+    assert(p2.first.v.val == 1);
+    assert(p2.second.v == 2);
+  }
+
+  // test correct constructors of underlying types are called
+  {
+    const std::pair<TracedCopyMove, TracedCopyMove> p1{};
+    std::pair<ConvertibleFrom<TracedCopyMove>, ConvertibleFrom<TracedCopyMove>> p2{std::move(p1)};
+    assert(constMoveCtrCalled(p2.first.v));
+    assert(constMoveCtrCalled(p2.second.v));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor_pair_U_V_ref.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor_pair_U_V_ref.pass.cpp
new file mode 100644
index 0000000..7ac70bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor_pair_U_V_ref.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// template <class U1, class U2>
+//   constexpr explicit(see below) pair(pair<U1, U2>& p);
+
+#include <cassert>
+#include <utility>
+
+#include "copy_move_types.h"
+#include "test_macros.h"
+
+// Constraints:
+// is_constructible_v<T1, decltype(get<0>(FWD(p)))> is true and
+// is_constructible_v<T2, decltype(get<1>(FWD(p)))> is true.
+struct X {};
+struct Y {};
+struct NotConvertibleToXorY {};
+
+// clang-format off
+static_assert( std::is_constructible_v<std::pair<X, Y>, std::pair<X, Y>&>);
+static_assert(!std::is_constructible_v<std::pair<X, Y>, std::pair<NotConvertibleToXorY, Y>&>);
+static_assert(!std::is_constructible_v<std::pair<X, Y>, std::pair<X, NotConvertibleToXorY>&>);
+static_assert(!std::is_constructible_v<std::pair<X, Y>, std::pair<NotConvertibleToXorY, NotConvertibleToXorY>&>);
+
+// The expression inside explicit is equivalent to:
+// !is_convertible_v<decltype(get<0>(FWD(p))), first_type> ||
+// !is_convertible_v<decltype(get<1>(FWD(p))), second_type>.
+static_assert( std::is_convertible_v<std::pair<X, Y>&, std::pair<ConvertibleFrom<X>, ConvertibleFrom<Y>>>);
+static_assert(!std::is_convertible_v<std::pair<X, Y>&, std::pair<ConvertibleFrom<X>, ExplicitConstructibleFrom<Y>>>);
+static_assert(!std::is_convertible_v<std::pair<X, Y>&, std::pair<ExplicitConstructibleFrom<X>, ConvertibleFrom<Y>>>);
+static_assert(!std::is_convertible_v<std::pair<X, Y>&, std::pair<ExplicitConstructibleFrom<X>, ExplicitConstructibleFrom<Y>>>);
+// clang-format on
+
+constexpr bool test() {
+  // use case in zip. Init pair<T&, U&> from pair<T, U>&
+  {
+    std::pair<int, int> p1{1, 2};
+    std::pair<int&, int&> p2{p1};
+    assert(&(p2.first) == &(p1.first));
+    assert(&(p2.second) == &(p1.second));
+  }
+
+  // test implicit conversions.
+  {
+    std::pair<MutableCopy, int> p1{1, 2};
+    std::pair<ConvertibleFrom<MutableCopy>, ConvertibleFrom<int>> p2 = p1;
+    assert(p2.first.v.val == 1);
+    assert(p2.second.v == 2);
+  }
+
+  // test explicit conversions.
+  {
+    std::pair<MutableCopy, int> p1{1, 2};
+    std::pair<ExplicitConstructibleFrom<MutableCopy>, ExplicitConstructibleFrom<int>> p2{p1};
+    assert(p2.first.v.val == 1);
+    assert(p2.second.v == 2);
+  }
+
+  // test correct constructors of underlying types are called
+  {
+    std::pair<TracedCopyMove, TracedCopyMove> p1{};
+    std::pair<ConvertibleFrom<TracedCopyMove>, ConvertibleFrom<TracedCopyMove>> p2{p1};
+    assert(nonConstCopyCtrCalled(p2.first.v));
+    assert(nonConstCopyCtrCalled(p2.second.v));
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default-sfinae.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default-sfinae.pass.cpp
new file mode 100644
index 0000000..455c268
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default-sfinae.pass.cpp
@@ -0,0 +1,165 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// Test the SFINAE required by LWG Issue #2367.
+// is_default_constructible<pair>
+
+// UNSUPPORTED: c++03
+
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 11
+#define CONSTEXPR_CXX14 constexpr
+#define STATIC_ASSERT_CXX14(Pred) static_assert(Pred, "")
+#else
+#define CONSTEXPR_CXX14
+#define STATIC_ASSERT_CXX14(Pred) assert(Pred)
+#endif
+
+struct DeletedDefault {
+    // A class with a deleted default constructor. Used to test the SFINAE
+    // on std::pair's default constructor.
+    constexpr explicit DeletedDefault(int x) : value(x) {}
+    constexpr DeletedDefault() = delete;
+    int value;
+};
+
+template <class Tp, bool>
+struct DependantType: public Tp {};
+
+template <class T, bool Val>
+using DependantIsDefault = DependantType<std::is_default_constructible<T>, Val>;
+
+template <class T>
+struct DefaultSFINAES {
+    template <bool Dummy = false, class = typename std::enable_if<
+             DependantIsDefault<T, Dummy>::value
+                >::type
+            >
+    constexpr DefaultSFINAES() : value() {}
+    constexpr explicit DefaultSFINAES(T const& x) : value(x) {}
+    T value;
+};
+
+struct NoDefault {
+    constexpr NoDefault(int v) : value(v) {}
+    int value;
+};
+
+template <class Tp>
+void test_not_is_default_constructible()
+{
+    {
+        typedef std::pair<int, Tp> P;
+        static_assert(!std::is_default_constructible<P>::value, "");
+        static_assert(std::is_constructible<P, int, Tp>::value, "");
+    }
+    {
+        typedef std::pair<Tp, int> P;
+        static_assert(!std::is_default_constructible<P>::value, "");
+        static_assert(std::is_constructible<P, Tp, int>::value, "");
+    }
+    {
+        typedef std::pair<Tp, Tp> P;
+        static_assert(!std::is_default_constructible<P>::value, "");
+        static_assert(std::is_constructible<P, Tp, Tp>::value, "");
+    }
+}
+
+template <class Tp>
+void test_is_default_constructible()
+{
+    {
+        typedef std::pair<int, Tp> P;
+        static_assert(std::is_default_constructible<P>::value, "");
+    }
+    {
+        typedef std::pair<Tp, int> P;
+        static_assert(std::is_default_constructible<P>::value, "");
+    }
+    {
+        typedef std::pair<Tp, Tp> P;
+        static_assert(std::is_default_constructible<P>::value, "");
+    }
+}
+
+template <class T>
+struct IllFormedDefaultImp {
+  constexpr explicit IllFormedDefaultImp(int v) : value(v) {}
+  constexpr IllFormedDefaultImp() : value(T::DoesNotExistAndShouldNotCompile) {}
+  int value;
+};
+
+typedef IllFormedDefaultImp<int> IllFormedDefault;
+    // A class which provides a constexpr default constructor with a valid
+    // signature but an ill-formed body. The A compile error will be emitted if
+    // the default constructor is instantiated.
+
+
+// Check that the SFINAE on the default constructor is not evaluated when
+// it isn't needed. If the default constructor of 'IllFormedDefault' is evaluated
+// in C++11, even with is_default_constructible, then this test should fail to
+// compile. In C++14 and greater evaluate each test is evaluated as a constant
+// expression.
+// See LWG issue #2367
+void test_illformed_default()
+{
+    {
+    typedef std::pair<IllFormedDefault, int> P;
+    static_assert((std::is_constructible<P, IllFormedDefault, int>::value), "");
+    CONSTEXPR_CXX14 P p(IllFormedDefault(42), -5);
+    STATIC_ASSERT_CXX14(p.first.value == 42 && p.second == -5);
+    }
+    {
+    typedef std::pair<int, IllFormedDefault> P;
+    static_assert((std::is_constructible<P, int, IllFormedDefault>::value), "");
+    CONSTEXPR_CXX14 IllFormedDefault dd(-5);
+    CONSTEXPR_CXX14 P p(42, dd);
+    STATIC_ASSERT_CXX14(p.first == 42 && p.second.value == -5);
+    }
+    {
+    typedef std::pair<IllFormedDefault, IllFormedDefault> P;
+    static_assert((std::is_constructible<P, IllFormedDefault, IllFormedDefault>::value), "");
+    CONSTEXPR_CXX14 P p(IllFormedDefault(42), IllFormedDefault(-5));
+    STATIC_ASSERT_CXX14(p.first.value == 42 && p.second.value == -5);
+    }
+}
+
+
+int main(int, char**)
+{
+    {
+        // Check that pair<T, U> can still be used even if
+        // is_default_constructible<T> or is_default_constructible<U> cause
+        // a compilation error.
+        test_illformed_default();
+    }
+    {
+        // pair::pair() is only disable in C++11 and beyond.
+        test_not_is_default_constructible<NoDefault>();
+        test_not_is_default_constructible<DeletedDefault>();
+        test_not_is_default_constructible<DefaultSFINAES<int&>>();
+        test_not_is_default_constructible<DefaultSFINAES<int&&>>();
+        test_not_is_default_constructible<int&>();
+        test_not_is_default_constructible<int&&>();
+    }
+    {
+        test_is_default_constructible<int>();
+        test_is_default_constructible<DefaultSFINAES<int>>();
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default.explicit.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default.explicit.fail.cpp
new file mode 100644
index 0000000..2c4106f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default.explicit.fail.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// explicit(see-below) constexpr pair();
+
+// This test checks the conditional explicitness of std::pair's default
+// constructor as introduced by the resolution of LWG 2510.
+
+#include <utility>
+
+
+struct ImplicitlyDefaultConstructible {
+    ImplicitlyDefaultConstructible() = default;
+};
+
+struct ExplicitlyDefaultConstructible {
+    explicit ExplicitlyDefaultConstructible() = default;
+};
+
+std::pair<ImplicitlyDefaultConstructible, ExplicitlyDefaultConstructible> test1() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::pair<ExplicitlyDefaultConstructible, ImplicitlyDefaultConstructible> test2() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::pair<ExplicitlyDefaultConstructible, ExplicitlyDefaultConstructible> test3() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
+std::pair<ImplicitlyDefaultConstructible, ImplicitlyDefaultConstructible> test4() { return {}; }
+
+int main(int, char**) {
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default.pass.cpp
new file mode 100644
index 0000000..dc05a2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/default.pass.cpp
@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// explicit(see-below) constexpr pair();
+
+// NOTE: The SFINAE on the default constructor is tested in
+//       default-sfinae.pass.cpp
+
+
+#include <utility>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<float, short*> P;
+        P p;
+        assert(p.first == 0.0f);
+        assert(p.second == nullptr);
+    }
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<float, short*> P;
+        constexpr P p;
+        static_assert(p.first == 0.0f, "");
+        static_assert(p.second == nullptr, "");
+    }
+    {
+        using NoDefault = ImplicitTypes::NoDefault;
+        using P = std::pair<int, NoDefault>;
+        static_assert(!std::is_default_constructible<P>::value, "");
+        using P2 = std::pair<NoDefault, int>;
+        static_assert(!std::is_default_constructible<P2>::value, "");
+    }
+    {
+        struct Base { };
+        struct Derived : Base { protected: Derived() = default; };
+        static_assert(!std::is_default_constructible<std::pair<Derived, int> >::value, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/dtor.pass.cpp
new file mode 100644
index 0000000..f19bce8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/dtor.pass.cpp
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// ~pair()
+
+// C++17 added:
+//   The destructor of pair shall be a trivial destructor
+//     if (is_trivially_destructible_v<T1> && is_trivially_destructible_v<T2>) is true.
+
+
+#include <utility>
+#include <type_traits>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+  static_assert((std::is_trivially_destructible<
+      std::pair<int, float> >::value), "");
+  static_assert((!std::is_trivially_destructible<
+      std::pair<int, std::string> >::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/implicit_deduction_guides.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/implicit_deduction_guides.pass.cpp
new file mode 100644
index 0000000..0b0f8be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/implicit_deduction_guides.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <utility>
+
+// Test that the constructors offered by std::pair are formulated
+// so they're compatible with implicit deduction guides, or if that's not
+// possible that they provide explicit guides to make it work.
+
+#include <utility>
+#include <memory>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "archetypes.h"
+
+
+// Overloads
+// ---------------
+// (1)  pair(const T1&, const T2&) -> pair<T1, T2>
+// (2)  explicit pair(const T1&, const T2&) -> pair<T1, T2>
+// (3)  pair(pair const& t) -> decltype(t)
+// (4)  pair(pair&& t) -> decltype(t)
+// (5)  pair(pair<U1, U2> const&) -> pair<U1, U2>
+// (6)  explicit pair(pair<U1, U2> const&) -> pair<U1, U2>
+// (7)  pair(pair<U1, U2> &&) -> pair<U1, U2>
+// (8)  explicit pair(pair<U1, U2> &&) -> pair<U1, U2>
+int main(int, char**)
+{
+  using E = ExplicitTestTypes::TestType;
+  static_assert(!std::is_convertible<E const&, E>::value, "");
+  { // Testing (1)
+    int const x = 42;
+    std::pair t1("abc", x);
+    ASSERT_SAME_TYPE(decltype(t1), std::pair<const char*, int>);
+  }
+  { // Testing (2)
+    std::pair p1(E{}, 42);
+    ASSERT_SAME_TYPE(decltype(p1), std::pair<E, int>);
+
+    const E t{};
+    std::pair p2(t, E{});
+    ASSERT_SAME_TYPE(decltype(p2), std::pair<E, E>);
+  }
+  { // Testing (3, 5)
+    std::pair<double, decltype(nullptr)> const p(0.0, nullptr);
+    std::pair p1(p);
+    ASSERT_SAME_TYPE(decltype(p1), std::pair<double, decltype(nullptr)>);
+  }
+  { // Testing (3, 6)
+    std::pair<E, decltype(nullptr)> const p(E{}, nullptr);
+    std::pair p1(p);
+    ASSERT_SAME_TYPE(decltype(p1), std::pair<E, decltype(nullptr)>);
+  }
+  { // Testing (4, 7)
+    std::pair<std::string, void*> p("abc", nullptr);
+    std::pair p1(std::move(p));
+    ASSERT_SAME_TYPE(decltype(p1), std::pair<std::string, void*>);
+  }
+  { // Testing (4, 8)
+    std::pair<std::string, E> p("abc", E{});
+    std::pair p1(std::move(p));
+    ASSERT_SAME_TYPE(decltype(p1), std::pair<std::string, E>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/move_ctor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/move_ctor.pass.cpp
new file mode 100644
index 0000000..7133310
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/move_ctor.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair(pair&&) = default;
+
+#include <cassert>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Dummy {
+  Dummy(Dummy const&) = delete;
+  Dummy(Dummy &&) = default;
+};
+
+struct NotCopyOrMoveConstructible {
+  NotCopyOrMoveConstructible() = default;
+  NotCopyOrMoveConstructible(NotCopyOrMoveConstructible const&) = delete;
+  NotCopyOrMoveConstructible(NotCopyOrMoveConstructible&&) = delete;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P1;
+        static_assert(std::is_move_constructible<P1>::value, "");
+        P1 p1(3, static_cast<short>(4));
+        P1 p2 = std::move(p1);
+        assert(p2.first == 3);
+        assert(p2.second == 4);
+    }
+    {
+        using P = std::pair<Dummy, int>;
+        static_assert(!std::is_copy_constructible<P>::value, "");
+        static_assert(std::is_move_constructible<P>::value, "");
+    }
+    {
+        // When constructing a pair containing a reference, we only bind the
+        // reference, so it doesn't matter whether the type is or isn't
+        // copy/move constructible.
+        {
+            using P = std::pair<NotCopyOrMoveConstructible&, int>;
+            static_assert(std::is_move_constructible<P>::value, "");
+
+            NotCopyOrMoveConstructible obj;
+            P p2{obj, 3};
+            P p1(std::move(p2));
+            assert(&p1.first == &obj);
+            assert(&p2.first == &obj);
+        }
+        {
+            using P = std::pair<NotCopyOrMoveConstructible&&, int>;
+            static_assert(std::is_move_constructible<P>::value, "");
+
+            NotCopyOrMoveConstructible obj;
+            P p2{std::move(obj), 3};
+            P p1(std::move(p2));
+            assert(&p1.first == &obj);
+            assert(&p2.first == &obj);
+        }
+    }
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/not_constexpr_cxx11.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/not_constexpr_cxx11.fail.cpp
new file mode 100644
index 0000000..88d0f96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/not_constexpr_cxx11.fail.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: c++11
+
+// <utility>
+
+// Test that only the default constructor is constexpr in C++11
+
+#include <utility>
+#include <cassert>
+
+struct ExplicitT {
+  constexpr explicit ExplicitT(int x) : value(x) {}
+  constexpr explicit ExplicitT(ExplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+struct ImplicitT {
+  constexpr ImplicitT(int x) : value(x) {}
+  constexpr ImplicitT(ImplicitT const& o) : value(o.value) {}
+  int value;
+};
+
+int main(int, char**)
+{
+    {
+        using P = std::pair<int, int>;
+        constexpr int x = 42;
+        constexpr P default_p{};
+        constexpr P copy_p(default_p);
+        constexpr P const_U_V(x, x); // expected-error {{must be initialized by a constant expression}}
+        constexpr P U_V(42, 101); // expected-error {{must be initialized by a constant expression}}
+    }
+    {
+        using P = std::pair<ExplicitT, ExplicitT>;
+        constexpr std::pair<int, int> other;
+        constexpr ExplicitT e(99);
+        constexpr P const_U_V(e, e); // expected-error {{must be initialized by a constant expression}}
+        constexpr P U_V(42, 101); // expected-error {{must be initialized by a constant expression}}
+        constexpr P pair_U_V(other); // expected-error {{must be initialized by a constant expression}}
+    }
+    {
+        using P = std::pair<ImplicitT, ImplicitT>;
+        constexpr std::pair<int, int> other;
+        constexpr ImplicitT i = 99;
+        constexpr P const_U_V = {i, i}; // expected-error {{must be initialized by a constant expression}}
+        constexpr P U_V = {42, 101}; // expected-error {{must be initialized by a constant expression}}
+        constexpr P pair_U_V = other; // expected-error {{must be initialized by a constant expression}}
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
new file mode 100644
index 0000000..37bbb95
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class... Args1, class... Args2>
+//     pair(piecewise_construct_t, tuple<Args1...> first_args,
+//                                 tuple<Args2...> second_args);
+
+#include <cassert>
+#include <tuple>
+#include <utility>
+
+#include "test_macros.h"
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<int, int*> P1;
+    typedef std::pair<int*, int> P2;
+    typedef std::pair<P1, P2> P3;
+    P3 p3(std::piecewise_construct, std::tuple<int, int*>(3, nullptr),
+          std::tuple<int*, int>(nullptr, 4));
+    assert(p3.first == P1(3, nullptr));
+    assert(p3.second == P2(nullptr, 4));
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/rv_pair_U_V.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/rv_pair_U_V.pass.cpp
new file mode 100644
index 0000000..593df90
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/rv_pair_U_V.pass.cpp
@@ -0,0 +1,226 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class U, class V> pair(pair<U, V>&& p);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+
+#include "test_macros.h"
+using namespace ImplicitTypes; // Get implicitly archetypes
+
+template <class T1, class U1,
+          bool CanCopy = true, bool CanConvert = CanCopy>
+void test_pair_rv()
+{
+    using P1 = std::pair<T1, int>;
+    using P2 = std::pair<int, T1>;
+    using UP1 = std::pair<U1, int>&&;
+    using UP2 = std::pair<int, U1>&&;
+    static_assert(std::is_constructible<P1, UP1>::value == CanCopy, "");
+    static_assert(test_convertible<P1, UP1>() == CanConvert, "");
+    static_assert(std::is_constructible<P2, UP2>::value == CanCopy, "");
+    static_assert(test_convertible<P2,  UP2>() == CanConvert, "");
+}
+
+struct Base
+{
+    virtual ~Base() {}
+};
+
+struct Derived
+    : public Base
+{
+};
+
+
+template <class T, class U>
+struct DPair : public std::pair<T, U> {
+  using Base = std::pair<T, U>;
+  using Base::Base;
+};
+
+struct ExplicitT {
+  constexpr explicit ExplicitT(int x) : value(x) {}
+  int value;
+};
+
+struct ImplicitT {
+  constexpr ImplicitT(int x) : value(x) {}
+  int value;
+};
+
+struct NotCopyOrMoveConstructible {
+  NotCopyOrMoveConstructible() = default;
+  NotCopyOrMoveConstructible(NotCopyOrMoveConstructible const&) = delete;
+  NotCopyOrMoveConstructible(NotCopyOrMoveConstructible&&) = delete;
+};
+
+struct NonCopyConstructible {
+    NonCopyConstructible(NonCopyConstructible const&) = delete;
+    NonCopyConstructible(NonCopyConstructible&&) = default;
+};
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<std::unique_ptr<Derived>, int> P1;
+        typedef std::pair<std::unique_ptr<Base>, long> P2;
+        P1 p1(std::unique_ptr<Derived>(), 4);
+        P2 p2 = std::move(p1);
+        assert(p2.first == nullptr);
+        assert(p2.second == 4);
+    }
+    {
+        // We allow derived types to use this constructor
+        using P1 = DPair<long, long>;
+        using P2 = std::pair<int, int>;
+        P1 p1(42, 101);
+        P2 p2(std::move(p1));
+        assert(p2.first == 42);
+        assert(p2.second == 101);
+    }
+    {
+        test_pair_rv<AllCtors, AllCtors>();
+        test_pair_rv<AllCtors, AllCtors&>();
+        test_pair_rv<AllCtors, AllCtors&&>();
+        test_pair_rv<AllCtors, const AllCtors&>();
+        test_pair_rv<AllCtors, const AllCtors&&>();
+
+        test_pair_rv<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors>();
+        test_pair_rv<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors&, true, false>();
+        test_pair_rv<ExplicitTypes::AllCtors, ExplicitTypes::AllCtors&&, true, false>();
+        test_pair_rv<ExplicitTypes::AllCtors, const ExplicitTypes::AllCtors&, true, false>();
+        test_pair_rv<ExplicitTypes::AllCtors, const ExplicitTypes::AllCtors&&, true, false>();
+
+        test_pair_rv<MoveOnly, MoveOnly>();
+        test_pair_rv<MoveOnly, MoveOnly&, false>();
+        test_pair_rv<MoveOnly, MoveOnly&&>();
+
+        test_pair_rv<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly>(); // copy construction
+        test_pair_rv<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly&, false>();
+        test_pair_rv<ExplicitTypes::MoveOnly, ExplicitTypes::MoveOnly&&, true, false>();
+
+        test_pair_rv<CopyOnly, CopyOnly>();
+        test_pair_rv<CopyOnly, CopyOnly&>();
+        test_pair_rv<CopyOnly, CopyOnly&&>();
+
+        test_pair_rv<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly>();
+        test_pair_rv<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly&, true, false>();
+        test_pair_rv<ExplicitTypes::CopyOnly, ExplicitTypes::CopyOnly&&, true, false>();
+
+        test_pair_rv<NonCopyable, NonCopyable, false>();
+        test_pair_rv<NonCopyable, NonCopyable&, false>();
+        test_pair_rv<NonCopyable, NonCopyable&&, false>();
+        test_pair_rv<NonCopyable, const NonCopyable&, false>();
+        test_pair_rv<NonCopyable, const NonCopyable&&, false>();
+    }
+    { // Test construction of references
+        test_pair_rv<NonCopyable&, NonCopyable&>();
+        test_pair_rv<NonCopyable&, NonCopyable&&>();
+        test_pair_rv<NonCopyable&, NonCopyable const&, false>();
+        test_pair_rv<NonCopyable const&, NonCopyable&&>();
+        test_pair_rv<NonCopyable&&, NonCopyable&&>();
+
+        test_pair_rv<ConvertingType&, int, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType&, int, false>();
+        // Unfortunately the below conversions are allowed and create dangling
+        // references.
+        //test_pair_rv<ConvertingType&&, int>();
+        //test_pair_rv<ConvertingType const&, int>();
+        //test_pair_rv<ConvertingType const&&, int>();
+        // But these are not because the converting constructor is explicit.
+        test_pair_rv<ExplicitTypes::ConvertingType&&, int, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType const&, int, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType const&&, int, false>();
+    }
+    {
+        test_pair_rv<AllCtors, int, false>();
+        test_pair_rv<ExplicitTypes::AllCtors, int, false>();
+        test_pair_rv<ConvertingType, int>();
+        test_pair_rv<ExplicitTypes::ConvertingType, int, true, false>();
+
+        test_pair_rv<ConvertingType, int>();
+        test_pair_rv<ConvertingType, ConvertingType>();
+        test_pair_rv<ConvertingType, ConvertingType const&>();
+        test_pair_rv<ConvertingType, ConvertingType&>();
+        test_pair_rv<ConvertingType, ConvertingType&&>();
+
+        test_pair_rv<ExplicitTypes::ConvertingType, int, true, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType, int&, true, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType, const int&, true, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType, int&&, true, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType, const int&&, true, false>();
+
+        test_pair_rv<ExplicitTypes::ConvertingType, ExplicitTypes::ConvertingType>();
+        test_pair_rv<ExplicitTypes::ConvertingType, ExplicitTypes::ConvertingType const&, true, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType, ExplicitTypes::ConvertingType&, true, false>();
+        test_pair_rv<ExplicitTypes::ConvertingType, ExplicitTypes::ConvertingType&&, true, false>();
+    }
+    {
+        // When constructing a pair containing a reference, we only bind the
+        // reference, so it doesn't matter whether the type is or isn't
+        // copy/move constructible.
+        {
+            using P1 = std::pair<NotCopyOrMoveConstructible&, long>;
+            using P2 = std::pair<NotCopyOrMoveConstructible&, int>;
+            static_assert(std::is_constructible<P1, P2&&>::value, "");
+
+            NotCopyOrMoveConstructible obj;
+            P2 p2{obj, 3};
+            P1 p1(std::move(p2));
+            assert(&p1.first == &obj);
+            assert(&p2.first == &obj);
+        }
+        {
+            using P1 = std::pair<NotCopyOrMoveConstructible&&, long>;
+            using P2 = std::pair<NotCopyOrMoveConstructible&&, int>;
+            static_assert(std::is_constructible<P1, P2&&>::value, "");
+
+            NotCopyOrMoveConstructible obj;
+            P2 p2{std::move(obj), 3};
+            P1 p1(std::move(p2));
+            assert(&p1.first == &obj);
+            assert(&p2.first == &obj);
+        }
+    }
+    {
+        // Make sure we can't move-construct from a pair containing a reference
+        // if that type isn't copy-constructible (since otherwise we'd be stealing
+        // the object through the reference).
+        using P1 = std::pair<NonCopyConstructible, long>;
+        using P2 = std::pair<NonCopyConstructible&, int>;
+        static_assert(!std::is_constructible<P1, P2&&>::value, "");
+    }
+#if TEST_STD_VER > 11
+    { // explicit constexpr test
+        constexpr std::pair<int, int> p1(42, 43);
+        constexpr std::pair<ExplicitT, ExplicitT> p2(std::move(p1));
+        static_assert(p2.first.value == 42, "");
+        static_assert(p2.second.value == 43, "");
+    }
+    { // implicit constexpr test
+        constexpr std::pair<int, int> p1(42, 43);
+        constexpr std::pair<ImplicitT, ImplicitT> p2 = std::move(p1);
+        static_assert(p2.first.value == 42, "");
+        static_assert(p2.second.value == 43, "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/special_member_generation_test.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/special_member_generation_test.pass.cpp
new file mode 100644
index 0000000..f03f8bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/special_member_generation_test.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <utility>
+
+// template <class T, class U> struct pair;
+
+// pair(pair const&) = default;
+// pair(pair &&) = default;
+// pair& operator=(pair const&);
+// pair& operator=(pair&&);
+
+// Test that the copy/move constructors and assignment operators are
+// correctly defined or deleted based on the properties of `T` and `U`.
+
+#include <cassert>
+#include <string>
+#include <tuple>
+
+#include "archetypes.h"
+
+#include "test_macros.h"
+using namespace ImplicitTypes; // Get implicitly archetypes
+
+namespace ConstructorTest {
+
+template <class T1, bool CanCopy = true, bool CanMove = CanCopy> void test() {
+  using P1 = std::pair<T1, int>;
+  using P2 = std::pair<int, T1>;
+  static_assert(std::is_copy_constructible<P1>::value == CanCopy, "");
+  static_assert(std::is_move_constructible<P1>::value == CanMove, "");
+  static_assert(std::is_copy_constructible<P2>::value == CanCopy, "");
+  static_assert(std::is_move_constructible<P2>::value == CanMove, "");
+};
+
+} // namespace ConstructorTest
+
+void test_constructors_exist() {
+  using namespace ConstructorTest;
+  {
+    test<int>();
+    test<int &>();
+    test<int &&, false, true>();
+    test<const int>();
+    test<const int &>();
+    test<const int &&, false, true>();
+  }
+  {
+    test<Copyable>();
+    test<Copyable &>();
+    test<Copyable &&, false, true>();
+  }
+  {
+    test<NonCopyable, false>();
+    test<NonCopyable &, true>();
+    test<NonCopyable &&, false, true>();
+  }
+  {
+    // Even though CopyOnly has an explicitly deleted move constructor
+    // pair's move constructor is only implicitly deleted and therefore
+    // it doesn't participate in overload resolution.
+    test<CopyOnly, true, true>();
+    test<CopyOnly &, true>();
+    test<CopyOnly &&, false, true>();
+  }
+  {
+    test<MoveOnly, false, true>();
+    test<MoveOnly &, true>();
+    test<MoveOnly &&, false, true>();
+  }
+}
+
+namespace AssignmentOperatorTest {
+
+template <class T1, bool CanCopy = true, bool CanMove = CanCopy> void test() {
+  using P1 = std::pair<T1, int>;
+  using P2 = std::pair<int, T1>;
+  static_assert(std::is_copy_assignable<P1>::value == CanCopy, "");
+  static_assert(std::is_move_assignable<P1>::value == CanMove, "");
+  static_assert(std::is_copy_assignable<P2>::value == CanCopy, "");
+  static_assert(std::is_move_assignable<P2>::value == CanMove, "");
+};
+
+} // namespace AssignmentOperatorTest
+
+void test_assignment_operator_exists() {
+  using namespace AssignmentOperatorTest;
+  {
+    test<int>();
+    test<int &>();
+    test<int &&>();
+    test<const int, false>();
+    test<const int &, false>();
+    test<const int &&, false>();
+  }
+  {
+    test<Copyable>();
+    test<Copyable &>();
+    test<Copyable &&>();
+  }
+  {
+    test<NonCopyable, false>();
+    test<NonCopyable &, false>();
+    test<NonCopyable &&, false>();
+  }
+  {
+    test<CopyOnly, true>();
+    test<CopyOnly &, true>();
+    test<CopyOnly &&, true>();
+  }
+  {
+    test<MoveOnly, false, true>();
+    test<MoveOnly &, false, false>();
+    test<MoveOnly &&, false, true>();
+  }
+}
+
+int main(int, char**) {
+  test_constructors_exist();
+  test_assignment_operator_exists();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/swap.pass.cpp
new file mode 100644
index 0000000..a2d720f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/swap.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// void swap(pair& p);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct S {
+    int i;
+    TEST_CONSTEXPR_CXX20 S() : i(0) {}
+    TEST_CONSTEXPR_CXX20 S(int j) : i(j) {}
+    TEST_CONSTEXPR_CXX20 bool operator==(int x) const { return i == x; }
+};
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  {
+    typedef std::pair<int, short> P1;
+    P1 p1(3, static_cast<short>(4));
+    P1 p2(5, static_cast<short>(6));
+    p1.swap(p2);
+    assert(p1.first == 5);
+    assert(p1.second == 6);
+    assert(p2.first == 3);
+    assert(p2.second == 4);
+  }
+  {
+    typedef std::pair<int, S> P1;
+    P1 p1(3, S(4));
+    P1 p2(5, S(6));
+    p1.swap(p2);
+    assert(p1.first == 5);
+    assert(p1.second == 6);
+    assert(p2.first == 3);
+    assert(p2.second == 4);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/swap_member_const.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/swap_member_const.pass.cpp
new file mode 100644
index 0000000..93dc628
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/swap_member_const.pass.cpp
@@ -0,0 +1,81 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+// void swap(const pair& p) const;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+// Remarks: The expression inside noexcept is equivalent to
+// is_nothrow_swappable_v<const first_type> && is_nothrow_swappable_v<const second_type> for the second overload.
+template <class T>
+concept ConstMemberSwapNoexcept =
+    requires(const T& t1, const T& t2) {
+      { t1.swap(t2) } noexcept;
+    };
+
+template <bool canThrow>
+struct SwapMayThrow {};
+
+template <bool canThrow>
+void swap(const SwapMayThrow<canThrow>&, const SwapMayThrow<canThrow>&) noexcept(!canThrow);
+
+static_assert(ConstMemberSwapNoexcept<std::pair<SwapMayThrow<false>, SwapMayThrow<false>>>);
+static_assert(!ConstMemberSwapNoexcept<std::pair<SwapMayThrow<true>, SwapMayThrow<false>>>);
+static_assert(!ConstMemberSwapNoexcept<std::pair<SwapMayThrow<false>, SwapMayThrow<true>>>);
+static_assert(!ConstMemberSwapNoexcept<std::pair<SwapMayThrow<true>, SwapMayThrow<true>>>);
+
+struct ConstSwappable {
+  mutable int i;
+  friend constexpr void swap(const ConstSwappable& lhs, const ConstSwappable& rhs) { std::swap(lhs.i, rhs.i); }
+};
+
+constexpr bool test() {
+  // user defined const swap
+  {
+    using P = std::pair<const ConstSwappable, const ConstSwappable>;
+    const P p1(ConstSwappable{0}, ConstSwappable{1});
+    const P p2(ConstSwappable{2}, ConstSwappable{3});
+    p1.swap(p2);
+    assert(p1.first.i == 2);
+    assert(p1.second.i == 3);
+    assert(p2.first.i == 0);
+    assert(p2.second.i == 1);
+  }
+
+  // pair of references
+  {
+    int i1 = 0, i2 = 1, i3 = 2, i4 = 3;
+    const std::pair<int&, int&> p1{i1, i2};
+    const std::pair<int&, int&> p2{i3, i4};
+    p1.swap(p2);
+    assert(p1.first == 2);
+    assert(p1.second == 3);
+    assert(p2.first == 0);
+    assert(p2.second == 1);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+
+  return 0;
+}
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/trivial_copy_move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/trivial_copy_move.pass.cpp
new file mode 100644
index 0000000..27a912f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/trivial_copy_move.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair(pair const&) = default;
+// pair(pair&&) = default;
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct Dummy {
+  Dummy(Dummy const&) = delete;
+  Dummy(Dummy &&) = default;
+};
+
+int main(int, char**)
+{
+    typedef std::pair<int, short> P;
+    {
+        static_assert(std::is_copy_constructible<P>::value, "");
+#if !defined(_LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR)
+        static_assert(std::is_trivially_copy_constructible<P>::value, "");
+#endif
+    }
+#if TEST_STD_VER >= 11
+    {
+        static_assert(std::is_move_constructible<P>::value, "");
+#if !defined(_LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR)
+        static_assert(std::is_trivially_move_constructible<P>::value, "");
+#endif
+    }
+    {
+        using P1 = std::pair<Dummy, int>;
+        static_assert(!std::is_copy_constructible<P1>::value, "");
+        static_assert(!std::is_trivially_copy_constructible<P1>::value, "");
+        static_assert(std::is_move_constructible<P1>::value, "");
+#if !defined(_LIBCPP_DEPRECATED_ABI_DISABLE_PAIR_TRIVIAL_COPY_CTOR)
+        static_assert(std::is_trivially_move_constructible<P1>::value, "");
+#endif
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/types.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/types.pass.cpp
new file mode 100644
index 0000000..cf62ec4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.pair/types.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2>
+// struct pair
+// {
+//     typedef T1 first_type;
+//     typedef T2 second_type;
+
+#include <utility>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::pair<float, short*> P;
+    static_assert((std::is_same<P::first_type, float>::value), "");
+    static_assert((std::is_same<P::second_type, short*>::value), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp
new file mode 100644
index 0000000..76c1509
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/comparison.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class T1, class T2> bool operator==(const pair<T1,T2>&, const pair<T1,T2>&);
+// template <class T1, class T2> bool operator!=(const pair<T1,T2>&, const pair<T1,T2>&);
+// template <class T1, class T2> bool operator< (const pair<T1,T2>&, const pair<T1,T2>&);
+// template <class T1, class T2> bool operator> (const pair<T1,T2>&, const pair<T1,T2>&);
+// template <class T1, class T2> bool operator>=(const pair<T1,T2>&, const pair<T1,T2>&);
+// template <class T1, class T2> bool operator<=(const pair<T1,T2>&, const pair<T1,T2>&);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P;
+        P p1(3, static_cast<short>(4));
+        P p2(3, static_cast<short>(4));
+        assert( (p1 == p2));
+        assert(!(p1 != p2));
+        assert(!(p1 <  p2));
+        assert( (p1 <= p2));
+        assert(!(p1 >  p2));
+        assert( (p1 >= p2));
+    }
+    {
+        typedef std::pair<int, short> P;
+        P p1(2, static_cast<short>(4));
+        P p2(3, static_cast<short>(4));
+        assert(!(p1 == p2));
+        assert( (p1 != p2));
+        assert( (p1 <  p2));
+        assert( (p1 <= p2));
+        assert(!(p1 >  p2));
+        assert(!(p1 >= p2));
+    }
+    {
+        typedef std::pair<int, short> P;
+        P p1(3, static_cast<short>(2));
+        P p2(3, static_cast<short>(4));
+        assert(!(p1 == p2));
+        assert( (p1 != p2));
+        assert( (p1 <  p2));
+        assert( (p1 <= p2));
+        assert(!(p1 >  p2));
+        assert(!(p1 >= p2));
+    }
+    {
+        typedef std::pair<int, short> P;
+        P p1(3, static_cast<short>(4));
+        P p2(2, static_cast<short>(4));
+        assert(!(p1 == p2));
+        assert( (p1 != p2));
+        assert(!(p1 <  p2));
+        assert(!(p1 <= p2));
+        assert( (p1 >  p2));
+        assert( (p1 >= p2));
+    }
+    {
+        typedef std::pair<int, short> P;
+        P p1(3, static_cast<short>(4));
+        P p2(3, static_cast<short>(2));
+        assert(!(p1 == p2));
+        assert( (p1 != p2));
+        assert(!(p1 <  p2));
+        assert(!(p1 <= p2));
+        assert( (p1 >  p2));
+        assert( (p1 >= p2));
+    }
+
+#if TEST_STD_VER > 11
+    {
+        typedef std::pair<int, short> P;
+        constexpr P p1(3, static_cast<short>(4));
+        constexpr P p2(3, static_cast<short>(2));
+        static_assert(!(p1 == p2), "");
+        static_assert( (p1 != p2), "");
+        static_assert(!(p1 <  p2), "");
+        static_assert(!(p1 <= p2), "");
+        static_assert( (p1 >  p2), "");
+        static_assert( (p1 >= p2), "");
+    }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp
new file mode 100644
index 0000000..3670c02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/make_pair.pass.cpp
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> pair<V1, V2> make_pair(T1&&, T2&&);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P1;
+        P1 p1 = std::make_pair(3, static_cast<short>(4));
+        assert(p1.first == 3);
+        assert(p1.second == 4);
+    }
+
+#if TEST_STD_VER >= 11
+    {
+        typedef std::pair<std::unique_ptr<int>, short> P1;
+        P1 p1 = std::make_pair(std::unique_ptr<int>(new int(3)), static_cast<short>(4));
+        assert(*p1.first == 3);
+        assert(p1.second == 4);
+    }
+    {
+        typedef std::pair<std::unique_ptr<int>, short> P1;
+        P1 p1 = std::make_pair(nullptr, static_cast<short>(4));
+        assert(p1.first == nullptr);
+        assert(p1.second == 4);
+    }
+#endif
+#if TEST_STD_VER >= 14
+    {
+        typedef std::pair<int, short> P1;
+        constexpr P1 p1 = std::make_pair(3, static_cast<short>(4));
+        static_assert(p1.first == 3, "");
+        static_assert(p1.second == 4, "");
+    }
+#endif
+
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_const_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_const_swap.pass.cpp
new file mode 100644
index 0000000..8610cfb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_const_swap.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2>
+// void swap(const pair<T1, T2>& x, const pair<T1, T2>& y) const noexcept(noexcept(x.swap(y)));;
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Constraints:
+// For the second overload, is_swappable_v<const T1> is true and is_swappable_v<const T2> is true.
+struct NonConstSwappable {
+  friend constexpr void swap(NonConstSwappable&, NonConstSwappable&);
+};
+
+struct ConstSwappable {
+  mutable int i;
+  friend constexpr void swap(const ConstSwappable& lhs, const ConstSwappable& rhs) { std::swap(lhs.i, rhs.i); }
+};
+
+static_assert(std::is_swappable_v<const std::pair<ConstSwappable, ConstSwappable>>);
+static_assert(!std::is_swappable_v<const std::pair<NonConstSwappable, ConstSwappable>>);
+static_assert(!std::is_swappable_v<const std::pair<ConstSwappable, NonConstSwappable>>);
+static_assert(!std::is_swappable_v<const std::pair<NonConstSwappable, NonConstSwappable>>);
+
+// noexcept(noexcept(x.swap(y)));
+template <class T>
+concept NonMemberSwapNoexcept =
+    requires(T t1, T t2) {
+      { swap(t1, t2) } noexcept;
+    };
+
+template <bool canThrow>
+struct SwapMayThrow {};
+
+template <bool canThrow>
+void swap(const SwapMayThrow<canThrow>&, const SwapMayThrow<canThrow>&) noexcept(!canThrow);
+
+static_assert(NonMemberSwapNoexcept<const std::pair<SwapMayThrow<false>, SwapMayThrow<false>>>);
+static_assert(!NonMemberSwapNoexcept<const std::pair<SwapMayThrow<true>, SwapMayThrow<false>>>);
+static_assert(!NonMemberSwapNoexcept<const std::pair<SwapMayThrow<false>, SwapMayThrow<true>>>);
+static_assert(!NonMemberSwapNoexcept<const std::pair<SwapMayThrow<true>, SwapMayThrow<true>>>);
+
+constexpr bool test() {
+  // user defined const swap
+  {
+    using P = std::pair<const ConstSwappable, const ConstSwappable>;
+    const P p1(ConstSwappable{0}, ConstSwappable{1});
+    const P p2(ConstSwappable{2}, ConstSwappable{3});
+    using std::swap;
+    swap(p1, p2);
+    assert(p1.first.i == 2);
+    assert(p1.second.i == 3);
+    assert(p2.first.i == 0);
+    assert(p2.second.i == 1);
+  }
+
+  // pair of references
+  {
+    int i1 = 0, i2 = 1, i3 = 2, i4 = 3;
+    const std::pair<int&, int&> p1{i1, i2};
+    const std::pair<int&, int&> p2{i3, i4};
+    using std::swap;
+    swap(p1, p2);
+    assert(p1.first == 2);
+    assert(p1.second == 3);
+    assert(p2.first == 0);
+    assert(p2.second == 1);
+  }
+  return true;
+}
+
+int main(int, char**) {
+  test();
+
+// gcc cannot have mutable member in constant expression
+#if !defined(TEST_COMPILER_GCC)
+  static_assert(test());
+#endif
+
+  return 0;
+}
\ No newline at end of file
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp
new file mode 100644
index 0000000..3a1008c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/non_member_swap.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class T1, class T2> void swap(pair<T1, T2>& x, pair<T1, T2>& y);
+
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    {
+        typedef std::pair<int, short> P1;
+        P1 p1(3, static_cast<short>(4));
+        P1 p2(5, static_cast<short>(6));
+        swap(p1, p2);
+        assert(p1.first == 5);
+        assert(p1.second == 6);
+        assert(p2.first == 3);
+        assert(p2.second == 4);
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/three_way_comparison.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/three_way_comparison.pass.cpp
new file mode 100644
index 0000000..bd93d3f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/pairs/pairs.spec/three_way_comparison.pass.cpp
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class T1, class T2> bool operator<=>(const pair<T1,T2>&, const pair<T1,T2>&);
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include <cassert>
+#include <compare>
+#include <limits>
+#include <type_traits> // std::is_constant_evaluated
+#include <utility>
+
+#include "test_macros.h"
+
+template<class T> concept HasEqual = requires(T t) { t == t; };
+template<class T> concept HasLess = requires(T t) { t < t; };
+template<class T> concept HasSpaceship = requires(T t) { t <=> t; };
+
+constexpr bool test() {
+  {
+    // Pairs of types that both have strong ordering should compare with strong ordering.
+    using P = std::pair<int, int>;
+    ASSERT_SAME_TYPE(decltype(P() <=> P()), std::strong_ordering);
+    assert((P(1, 1) <=> P(1, 2)) == std::strong_ordering::less);
+    assert((P(2, 1) <=> P(1, 2)) == std::strong_ordering::greater);
+    assert((P(0, 0) <=> P(0, 0)) == std::strong_ordering::equal);
+  }
+  {
+    // Pairs of int and a type with no spaceship operator should compare with weak ordering.
+    struct NoSpaceship {
+      int value;
+      constexpr bool operator==(const NoSpaceship&) const = default;
+      constexpr bool operator<(const NoSpaceship& other) const { return value < other.value; }
+    };
+    using P = std::pair<int, NoSpaceship>;
+    ASSERT_SAME_TYPE(decltype(P() <=> P()), std::weak_ordering);
+    assert((P(1, {1}) <=> P(1, {2})) == std::weak_ordering::less);
+    assert((P(2, {1}) <=> P(1, {2})) == std::weak_ordering::greater);
+    assert((P(0, {0}) <=> P(0, {0})) == std::weak_ordering::equivalent);
+  }
+  {
+    // Pairs of int (strongly ordered) and double (partially ordered) should compare with partial ordering.
+    using P = std::pair<int, double>;
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    ASSERT_SAME_TYPE(decltype(P() <=> P()), std::partial_ordering);
+    assert((P(1, 1.0) <=> P(1, 2.0)) == std::partial_ordering::less);
+    assert((P(1, 1.0) <=> P(1, 1.0)) == std::partial_ordering::equivalent);
+    assert((P(1, -0.0) <=> P(1, 0.0)) == std::partial_ordering::equivalent);
+    assert((P(1, 2.0) <=> P(1, 1.0)) == std::partial_ordering::greater);
+    assert((P(1, nan) <=> P(2, nan)) == std::partial_ordering::less);
+    assert((P(2, nan) <=> P(1, nan)) == std::partial_ordering::greater);
+    assert((P(1, nan) <=> P(1, nan)) == std::partial_ordering::unordered);
+  }
+  {
+    using P = std::pair<double, int>;
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    ASSERT_SAME_TYPE(decltype(P() <=> P()), std::partial_ordering);
+    assert((P(2.0, 1) <=> P(1.0, 2)) == std::partial_ordering::greater);
+    assert((P(1.0, 1) <=> P(1.0, 2)) == std::partial_ordering::less);
+    assert((P(nan, 1) <=> P(nan, 2)) == std::partial_ordering::unordered);
+  }
+  {
+    struct NoRelative {
+      constexpr bool operator==(const NoRelative&) const;
+    };
+    static_assert(HasEqual<std::pair<int, NoRelative>>);
+    static_assert(!HasLess<std::pair<int, NoRelative>>);
+    static_assert(!HasSpaceship<std::pair<int, NoRelative>>);
+  }
+  {
+    struct NoLessThan {
+      constexpr bool operator==(const NoLessThan&) const;
+      constexpr bool operator>(const NoLessThan&) const;
+    };
+    static_assert(HasEqual<std::pair<int, NoLessThan>>);
+    static_assert(!HasLess<std::pair<int, NoLessThan>>);
+    static_assert(!HasSpaceship<std::pair<int, NoLessThan>>);
+  }
+
+#ifdef TEST_COMPILER_GCC
+  // GCC cannot evaluate NaN @ non-NaN constexpr, so test that runtime-only.
+  if (!std::is_constant_evaluated())
+#endif
+  {
+    {
+      using P = std::pair<int, double>;
+      constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+      assert((P(1, 2.0) <=> P(1, nan)) == std::partial_ordering::unordered);
+    }
+    {
+      using P = std::pair<double, int>;
+      constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+      assert((P(1.0, 1) <=> P(nan, 2)) == std::partial_ordering::unordered);
+    }
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/synopsis.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/synopsis.pass.cpp
new file mode 100644
index 0000000..85356dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/synopsis.pass.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+// XFAIL: c++03
+
+// #include <initializer_list>
+
+#include <utility>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::initializer_list<int> x;
+    (void)x;
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.inplace/inplace.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.inplace/inplace.pass.cpp
new file mode 100644
index 0000000..8a1afe2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.inplace/inplace.pass.cpp
@@ -0,0 +1,73 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <utility>
+
+// struct in_place_t {
+//   explicit in_place_t() = default;
+// };
+// inline constexpr in_place_t in_place{};
+
+// template <class T>
+//   struct in_place_type_t {
+//     explicit in_place_type_t() = default;
+//   };
+// template <class T>
+//   inline constexpr in_place_type_t<T> in_place_type{};
+
+// template <size_t I>
+//   struct in_place_index_t {
+//     explicit in_place_index_t() = default;
+//   };
+// template <size_t I>
+//   inline constexpr in_place_index_t<I> in_place_index{};
+
+#include <cassert>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+template <class Tp, class Up>
+constexpr bool check_tag(Up) {
+    return std::is_same<Tp, std::decay_t<Tp>>::value
+        && std::is_same<Tp, Up>::value;
+}
+
+int main(int, char**) {
+    // test in_place_t
+    {
+        using T = std::in_place_t;
+        static_assert(check_tag<T>(std::in_place));
+    }
+    // test in_place_type_t
+    {
+        using T1 = std::in_place_type_t<void>;
+        using T2 = std::in_place_type_t<int>;
+        using T3 = std::in_place_type_t<const int>;
+        static_assert(!std::is_same<T1, T2>::value && !std::is_same<T1, T3>::value);
+        static_assert(!std::is_same<T2, T3>::value);
+        static_assert(check_tag<T1>(std::in_place_type<void>));
+        static_assert(check_tag<T2>(std::in_place_type<int>));
+        static_assert(check_tag<T3>(std::in_place_type<const int>));
+    }
+    // test in_place_index_t
+    {
+        using T1 = std::in_place_index_t<0>;
+        using T2 = std::in_place_index_t<1>;
+        using T3 = std::in_place_index_t<static_cast<size_t>(-1)>;
+        static_assert(!std::is_same<T1, T2>::value && !std::is_same<T1, T3>::value);
+        static_assert(!std::is_same<T2, T3>::value);
+        static_assert(check_tag<T1>(std::in_place_index<0>));
+        static_assert(check_tag<T2>(std::in_place_index<1>));
+        static_assert(check_tag<T3>(std::in_place_index<static_cast<size_t>(-1)>));
+    }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_equal/cmp_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_equal/cmp_equal.pass.cpp
new file mode 100644
index 0000000..bece336
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_equal/cmp_equal.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+// template<class T, class U>
+//   constexpr bool cmp_equal(T t, U u) noexcept;         // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_cmp_equal1() {
+  constexpr Tuple<T> tup;
+  assert(std::cmp_equal(T(0), T(0)));
+  assert(std::cmp_equal(T(10), T(10)));
+  assert(std::cmp_equal(tup.min, tup.min));
+  assert(std::cmp_equal(tup.max, tup.max));
+  assert(!std::cmp_equal(T(0), T(1)));
+  assert(!std::cmp_equal(T(1), T(0)));
+  assert(!std::cmp_equal(T(5), T(10)));
+  assert(!std::cmp_equal(T(10), T(5)));
+  assert(!std::cmp_equal(tup.min, tup.max));
+  assert(!std::cmp_equal(tup.max, tup.min));
+  assert(!std::cmp_equal(1, tup.max));
+  assert(!std::cmp_equal(tup.max, 1));
+  assert(!std::cmp_equal(1, tup.min));
+  assert(!std::cmp_equal(tup.min, 1));
+  assert(std::cmp_equal(T(-5), T(-5)));
+  assert(!std::cmp_equal(-2, tup.min));
+  assert(!std::cmp_equal(tup.min, -2));
+  assert(!std::cmp_equal(-2, tup.max));
+  assert(!std::cmp_equal(tup.max, -2));
+}
+
+template <typename T, typename U>
+constexpr void test_cmp_equal2() {
+  constexpr Tuple<T> ttup;
+  constexpr Tuple<U> utup;
+  assert(std::cmp_equal(T(0), U(0)));
+  assert(std::cmp_equal(T(10), U(10)));
+  assert(!std::cmp_equal(T(0), U(1)));
+  assert(!std::cmp_equal(T(1), U(0)));
+  assert(!std::cmp_equal(T(5), U(10)));
+  assert(!std::cmp_equal(T(10), U(5)));
+  assert(!std::cmp_equal(ttup.min, utup.max));
+  assert(!std::cmp_equal(utup.min, ttup.max));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_cmp_equal1<Ts>() , ...);
+}
+
+template <class T, class... Us>
+constexpr void test2_impl(const std::tuple<Us...>&) {
+  (test_cmp_equal2<T, Us>() , ...);
+}
+
+template <class... Ts, class UTuple>
+constexpr void test2(const std::tuple<Ts...>&, const UTuple& utuple) {
+  (test2_impl<Ts>(utuple) , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test2(types, types);
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::cmp_equal(0, 0));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_greater/cmp_greater.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_greater/cmp_greater.pass.cpp
new file mode 100644
index 0000000..8b69ec6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_greater/cmp_greater.pass.cpp
@@ -0,0 +1,97 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+//   constexpr bool cmp_greater(T t, U u) noexcept;       // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_cmp_greater1() {
+  constexpr Tuple<T> tup;
+  assert(!std::cmp_greater(T(0), T(1)));
+  assert(!std::cmp_greater(T(1), T(2)));
+  assert(!std::cmp_greater(tup.min, tup.max));
+  assert(!std::cmp_greater(tup.min, tup.mid));
+  assert(!std::cmp_greater(tup.mid, tup.max));
+  assert(std::cmp_greater(T(1), T(0)));
+  assert(std::cmp_greater(T(10), T(5)));
+  assert(std::cmp_greater(tup.max, tup.min));
+  assert(std::cmp_greater(tup.mid, tup.min));
+  assert(!std::cmp_greater(tup.mid, tup.mid));
+  assert(!std::cmp_greater(tup.min, tup.min));
+  assert(!std::cmp_greater(tup.max, tup.max));
+  assert(std::cmp_greater(tup.max, 1));
+  assert(std::cmp_greater(1, tup.min));
+  assert(!std::cmp_greater(T(-1), T(-1)));
+  assert(std::cmp_greater(-2, tup.min) == std::is_signed_v<T>);
+  assert(!std::cmp_greater(tup.min, -2) == std::is_signed_v<T>);
+  assert(!std::cmp_greater(-2, tup.max));
+  assert(std::cmp_greater(tup.max, -2));
+}
+
+template <typename T, typename U>
+constexpr void test_cmp_greater2() {
+  assert(!std::cmp_greater(T(0), U(1)));
+  assert(std::cmp_greater(T(1), U(0)));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_cmp_greater1<Ts>() , ...);
+}
+
+template <class T, class... Us>
+constexpr void test2_impl(const std::tuple<Us...>&) {
+  (test_cmp_greater2<T, Us>() , ...);
+}
+
+template <class... Ts, class UTuple>
+constexpr void test2(const std::tuple<Ts...>&, const UTuple& utuple) {
+  (test2_impl<Ts>(utuple) , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test2(types, types);
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::cmp_greater(1, 0));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_greater_equal/cmp_greater_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_greater_equal/cmp_greater_equal.pass.cpp
new file mode 100644
index 0000000..90518be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_greater_equal/cmp_greater_equal.pass.cpp
@@ -0,0 +1,99 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+//   constexpr bool cmp_greater_equal(T t, U u) noexcept; // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_cmp_greater_equal1() {
+  constexpr Tuple<T> tup;
+  assert(!std::cmp_greater_equal(T(0), T(1)));
+  assert(!std::cmp_greater_equal(T(1), T(2)));
+  assert(!std::cmp_greater_equal(tup.min, tup.max));
+  assert(!std::cmp_greater_equal(tup.min, tup.mid));
+  assert(!std::cmp_greater_equal(tup.mid, tup.max));
+  assert(std::cmp_greater_equal(T(1), T(0)));
+  assert(std::cmp_greater_equal(T(10), T(5)));
+  assert(std::cmp_greater_equal(tup.max, tup.min));
+  assert(std::cmp_greater_equal(tup.mid, tup.min));
+  assert(std::cmp_greater_equal(tup.mid, tup.mid));
+  assert(std::cmp_greater_equal(tup.min, tup.min));
+  assert(std::cmp_greater_equal(tup.max, tup.max));
+  assert(std::cmp_greater_equal(tup.max, 1));
+  assert(std::cmp_greater_equal(1, tup.min));
+  assert(std::cmp_greater_equal(T(-1), T(-1)));
+  assert(std::cmp_greater_equal(-2, tup.min) == std::is_signed_v<T>);
+  assert(std::cmp_greater_equal(tup.min, -2) == std::is_unsigned_v<T>);
+  assert(!std::cmp_greater_equal(-2, tup.max));
+  assert(std::cmp_greater_equal(tup.max, -2));
+}
+
+template <typename T, typename U>
+constexpr void test_cmp_greater_equal2() {
+  assert(!std::cmp_greater_equal(T(0), U(1)));
+  assert(std::cmp_greater_equal(T(1), U(0)));
+  assert(std::cmp_greater_equal(T(0), U(0)));
+  assert(std::cmp_greater_equal(T(1), U(1)));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_cmp_greater_equal1<Ts>() , ...);
+}
+
+template <class T, class... Us>
+constexpr void test2_impl(const std::tuple<Us...>&) {
+  (test_cmp_greater_equal2<T, Us>() , ...);
+}
+
+template <class... Ts, class UTuple>
+constexpr void test2(const std::tuple<Ts...>&, const UTuple& utuple) {
+  (test2_impl<Ts>(utuple) , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test2(types, types);
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::cmp_greater_equal(1, 0));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_less/cmp_less.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_less/cmp_less.pass.cpp
new file mode 100644
index 0000000..2cc66eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_less/cmp_less.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+// template<class T, class U>
+//   constexpr bool cmp_less(T t, U u) noexcept;          // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_cmp_less1() {
+  constexpr Tuple<T> tup;
+  assert(std::cmp_less(T(0), T(1)));
+  assert(std::cmp_less(T(1), T(2)));
+  assert(std::cmp_less(tup.min, tup.max));
+  assert(std::cmp_less(tup.min, tup.mid));
+  assert(std::cmp_less(tup.mid, tup.max));
+  assert(!std::cmp_less(T(1), T(0)));
+  assert(!std::cmp_less(T(10), T(5)));
+  assert(!std::cmp_less(tup.max, tup.min));
+  assert(!std::cmp_less(tup.mid, tup.min));
+  assert(!std::cmp_less(tup.mid, tup.mid));
+  assert(!std::cmp_less(tup.min, tup.min));
+  assert(!std::cmp_less(tup.max, tup.max));
+  assert(!std::cmp_less(tup.max, 1));
+  assert(!std::cmp_less(1, tup.min));
+  assert(!std::cmp_less(T(-1), T(-1)));
+  assert(!std::cmp_less(-2, tup.min) == std::is_signed_v<T>);
+  assert(std::cmp_less(tup.min, -2) == std::is_signed_v<T>);
+  assert(std::cmp_less(-2, tup.max));
+  assert(!std::cmp_less(tup.max, -2));
+}
+
+template <typename T, typename U>
+constexpr void test_cmp_less2() {
+  assert(std::cmp_less(T(0), U(1)));
+  assert(!std::cmp_less(T(1), U(0)));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_cmp_less1<Ts>() , ...);
+}
+
+template <class T, class... Us>
+constexpr void test2_impl(const std::tuple<Us...>&) {
+  (test_cmp_less2<T, Us>() , ...);
+}
+
+template <class... Ts, class UTuple>
+constexpr void test2(const std::tuple<Ts...>&, const UTuple& utuple) {
+  (test2_impl<Ts>(utuple) , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test2(types, types);
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::cmp_less(0, 1));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_less_equal/cmp_less_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_less_equal/cmp_less_equal.pass.cpp
new file mode 100644
index 0000000..fb46980
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_less_equal/cmp_less_equal.pass.cpp
@@ -0,0 +1,98 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+//   constexpr bool cmp_less_equal(T t, U u) noexcept;    // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_cmp_less_equal1() {
+  constexpr Tuple<T> tup;
+  assert(std::cmp_less_equal(T(0), T(0)));
+  assert(std::cmp_less_equal(T(0), T(1)));
+  assert(std::cmp_less_equal(tup.min, tup.max));
+  assert(std::cmp_less_equal(tup.min, tup.mid));
+  assert(std::cmp_less_equal(tup.mid, tup.max));
+  assert(std::cmp_less_equal(tup.max, tup.max));
+  assert(std::cmp_less_equal(tup.mid, tup.mid));
+  assert(std::cmp_less_equal(tup.min, tup.min));
+  assert(!std::cmp_less_equal(T(1), T(0)));
+  assert(!std::cmp_less_equal(T(10), T(5)));
+  assert(!std::cmp_less_equal(tup.max, tup.min));
+  assert(!std::cmp_less_equal(tup.mid, tup.min));
+  assert(!std::cmp_less_equal(tup.max, 1));
+  assert(!std::cmp_less_equal(1, tup.min));
+  assert(std::cmp_less_equal(T(-1), T(-1)));
+  assert(!std::cmp_less_equal(-2, tup.min) == std::is_signed_v<T>);
+  assert(std::cmp_less_equal(tup.min, -2) == std::is_signed_v<T>);
+  assert(std::cmp_less_equal(-2, tup.max));
+  assert(!std::cmp_less_equal(tup.max, -2));
+}
+
+template <typename T, typename U>
+constexpr void test_cmp_less_equal2() {
+  assert(std::cmp_less_equal(T(0), U(1)));
+  assert(std::cmp_less_equal(T(0), U(0)));
+  assert(!std::cmp_less_equal(T(1), U(0)));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_cmp_less_equal1<Ts>() , ...);
+}
+
+template <class T, class... Us>
+constexpr void test2_impl(const std::tuple<Us...>&) {
+  (test_cmp_less_equal2<T, Us>() , ...);
+}
+
+template <class... Ts, class UTuple>
+constexpr void test2(const std::tuple<Ts...>&, const UTuple& utuple) {
+  (test2_impl<Ts>(utuple) , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test2(types, types);
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::cmp_less_equal(0, 1));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_not_equal/cmp_not_equal.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_not_equal/cmp_not_equal.pass.cpp
new file mode 100644
index 0000000..988198f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.cmp_not_equal/cmp_not_equal.pass.cpp
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+// template<class T, class U>
+//   constexpr bool cmp_not_equal(T t, U u) noexcept;     // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_cmp_not_equal1() {
+  constexpr Tuple<T> tup;
+  assert(!std::cmp_not_equal(T(0), T(0)));
+  assert(!std::cmp_not_equal(T(10), T(10)));
+  assert(!std::cmp_not_equal(tup.min, tup.min));
+  assert(!std::cmp_not_equal(tup.max, tup.max));
+  assert(std::cmp_not_equal(T(0), T(1)));
+  assert(std::cmp_not_equal(T(1), T(0)));
+  assert(std::cmp_not_equal(T(5), T(10)));
+  assert(std::cmp_not_equal(T(10), T(5)));
+  assert(std::cmp_not_equal(tup.min, tup.max));
+  assert(std::cmp_not_equal(tup.max, tup.min));
+  assert(std::cmp_not_equal(1, tup.max));
+  assert(std::cmp_not_equal(tup.max, 1));
+  assert(std::cmp_not_equal(1, tup.min));
+  assert(std::cmp_not_equal(tup.min, 1));
+  assert(std::cmp_not_equal(-2, tup.min));
+  assert(std::cmp_not_equal(tup.min, -2));
+  assert(std::cmp_not_equal(-2, tup.max));
+  assert(std::cmp_not_equal(tup.max, -2));
+}
+
+template <typename T, typename U>
+constexpr void test_cmp_not_equal2() {
+  constexpr Tuple<T> ttup;
+  constexpr Tuple<U> utup;
+  assert(!std::cmp_not_equal(T(0), U(0)));
+  assert(!std::cmp_not_equal(T(10), U(10)));
+  assert(std::cmp_not_equal(T(0), U(1)));
+  assert(std::cmp_not_equal(T(1), U(0)));
+  assert(std::cmp_not_equal(T(5), U(10)));
+  assert(std::cmp_not_equal(T(10), U(5)));
+  assert(std::cmp_not_equal(ttup.min, utup.max));
+  assert(std::cmp_not_equal(utup.min, ttup.max));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_cmp_not_equal1<Ts>() , ...);
+}
+
+template <class T, class... Us>
+constexpr void test2_impl(const std::tuple<Us...>&) {
+  (test_cmp_not_equal2<T, Us>() , ...);
+}
+
+template <class... Ts, class UTuple>
+constexpr void test2(const std::tuple<Ts...>&, const UTuple& utuple) {
+  (test2_impl<Ts>(utuple) , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test2(types, types);
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::cmp_not_equal(0, 0));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.fail.cpp
new file mode 100644
index 0000000..07ea511
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.fail.cpp
@@ -0,0 +1,147 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+// template<class T, class U>
+//   constexpr bool cmp_equal(T t, U u) noexcept; // C++20
+
+// template<class T, class U>
+//   constexpr bool cmp_not_equal(T t, U u) noexcept; // C++20
+
+// template<class T, class U>
+//   constexpr bool cmp_less(T t, U u) noexcept; // C++20
+
+// template<class T, class U>
+//   constexpr bool cmp_less_equal(T t, U u) noexcept; // C++20
+
+// template<class T, class U>
+//   constexpr bool cmp_greater(T t, U u) noexcept; // C++20
+
+// template<class T, class U>
+//   constexpr bool cmp_greater_equal(T t, U u) noexcept; // C++20
+
+// template<class R, class T>
+//   constexpr bool in_range(T t) noexcept;      // C++20
+
+#include <utility>
+#include <cstddef>
+
+#include "test_macros.h"
+
+struct NonEmptyT {
+  int val;
+  NonEmptyT() : val(0) {}
+  NonEmptyT(int val) : val(val) {}
+  operator int&() { return val; }
+  operator int() const { return val; }
+};
+
+enum ColorT { red, green, blue };
+
+struct EmptyT {};
+
+template <class T>
+constexpr void test() {
+  std::cmp_equal(T(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_equal(T(), int()); // expected-error 10-11 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_equal(int(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_not_equal(T(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_not_equal(T(), int()); // expected-error 10-11 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_not_equal(int(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_less(T(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less(T(), int()); // expected-error 10-11 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less(int(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less_equal(T(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_less_equal(T(), int()); // expected-error 10-11 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_less_equal(int(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_greater(T(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater(T(), int()); // expected-error 10-11 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater(int(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater_equal(T(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_greater_equal'}}
+  std::cmp_greater_equal(T(), int()); // expected-error 10-11 {{no matching function for call to 'cmp_greater_equal'}}
+  std::cmp_greater_equal(int(), T()); // expected-error 10-11 {{no matching function for call to 'cmp_greater_equal'}}
+  std::in_range<T>(int()); // expected-error 10-11 {{no matching function for call to 'in_range'}}
+  std::in_range<int>(T()); // expected-error 10-11 {{no matching function for call to 'in_range'}}
+}
+#ifndef TEST_HAS_NO_CHAR8_T
+template <class T>
+constexpr void test_char8t() {
+  std::cmp_equal(T(), T()); // expected-error 1 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_equal(T(), int()); // expected-error 1 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_equal(int(), T()); // expected-error 1 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_not_equal(T(), T()); // expected-error 1 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_not_equal(T(), int()); // expected-error 1 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_not_equal(int(), T()); // expected-error 1 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_less(T(), T()); // expected-error 1 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less(T(), int()); // expected-error 1 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less(int(), T()); // expected-error 1 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less_equal(T(), T()); // expected-error 1 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_less_equal(T(), int()); // expected-error 1 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_less_equal(int(), T()); // expected-error 1 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_greater(T(), T()); // expected-error 1 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater(T(), int()); // expected-error 1 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater(int(), T()); // expected-error 1 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater_equal(T(), T()); // expected-error 1 {{no matching function for call to 'cmp_greater_equal'}}
+  std::cmp_greater_equal(T(), int()); // expected-error 1 {{no matching function for call to 'cmp_greater_equal'}}
+  std::cmp_greater_equal(int(), T()); // expected-error 1 {{no matching function for call to 'cmp_greater_equal'}}
+  std::in_range<T>(int()); // expected-error 1 {{no matching function for call to 'in_range'}}
+  std::in_range<int>(T()); // expected-error 1 {{no matching function for call to 'in_range'}}
+}
+#endif // TEST_HAS_NO_CHAR8_T
+
+template <class T>
+constexpr void test_uchars() {
+  std::cmp_equal(T(), T()); // expected-error 2 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_equal(T(), int()); // expected-error 2 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_equal(int(), T()); // expected-error 2 {{no matching function for call to 'cmp_equal'}}
+  std::cmp_not_equal(T(), T()); // expected-error 2 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_not_equal(T(), int()); // expected-error 2 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_not_equal(int(), T()); // expected-error 2 {{no matching function for call to 'cmp_not_equal'}}
+  std::cmp_less(T(), T()); // expected-error 2 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less(T(), int()); // expected-error 2 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less(int(), T()); // expected-error 2 {{no matching function for call to 'cmp_less'}}
+  std::cmp_less_equal(T(), T()); // expected-error 2 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_less_equal(T(), int()); // expected-error 2 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_less_equal(int(), T()); // expected-error 2 {{no matching function for call to 'cmp_less_equal'}}
+  std::cmp_greater(T(), T()); // expected-error 2 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater(T(), int()); // expected-error 2 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater(int(), T()); // expected-error 2 {{no matching function for call to 'cmp_greater'}}
+  std::cmp_greater_equal(T(), T()); // expected-error 2 {{no matching function for call to 'cmp_greater_equal'}}
+  std::cmp_greater_equal(T(), int()); // expected-error 2 {{no matching function for call to 'cmp_greater_equal'}}
+  std::cmp_greater_equal(int(), T()); // expected-error 2 {{no matching function for call to 'cmp_greater_equal'}}
+  std::in_range<T>(int()); // expected-error 2 {{no matching function for call to 'in_range'}}
+  std::in_range<int>(T()); // expected-error 2 {{no matching function for call to 'in_range'}}
+}
+
+int main(int, char**) {
+  test<bool>();
+  test<char>();
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  test<wchar_t>();
+#endif
+  test<float>();
+  test<double>();
+  test<long double>();
+  test<std::byte>();
+  test<NonEmptyT>();
+  test<ColorT>();
+  test<std::nullptr_t>();
+  test<EmptyT>();
+
+#ifndef TEST_HAS_NO_CHAR8_T
+  test_char8t<char8_t>();
+#endif // TEST_HAS_NO_CHAR8_T
+
+  test_uchars<char16_t>();
+  test_uchars<char32_t>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.in_range/in_range.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.in_range/in_range.pass.cpp
new file mode 100644
index 0000000..1efa3d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.intcmp/intcmp.in_range/in_range.pass.cpp
@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <utility>
+
+// template<class R, class T>
+//   constexpr bool in_range(T t) noexcept;               // C++20
+
+#include <utility>
+#include <limits>
+#include <numeric>
+#include <tuple>
+#include <cassert>
+#include <cstdint>
+
+#include "test_macros.h"
+
+template <typename T>
+struct Tuple {
+  T min;
+  T max;
+  T mid;
+  constexpr Tuple() {
+    min = std::numeric_limits<T>::min();
+    max = std::numeric_limits<T>::max();
+    mid = std::midpoint(min, max);
+  }
+};
+
+template <typename T>
+constexpr void test_in_range1() {
+  constexpr Tuple<T> tup;
+  assert(std::in_range<T>(tup.min));
+  assert(std::in_range<T>(tup.min + 1));
+  assert(std::in_range<T>(tup.max));
+  assert(std::in_range<T>(tup.max - 1));
+  assert(std::in_range<T>(tup.mid));
+  assert(std::in_range<T>(tup.mid - 1));
+  assert(std::in_range<T>(tup.mid + 1));
+}
+
+constexpr void test_in_range() {
+  constexpr Tuple<uint8_t> utup8;
+  constexpr Tuple<int8_t> stup8;
+  assert(!std::in_range<int8_t>(utup8.max));
+  assert(std::in_range<short>(utup8.max));
+  assert(!std::in_range<uint8_t>(stup8.min));
+  assert(std::in_range<int8_t>(utup8.mid));
+  assert(!std::in_range<uint8_t>(stup8.mid));
+  assert(!std::in_range<uint8_t>(-1));
+}
+
+template <class... Ts>
+constexpr void test1(const std::tuple<Ts...>&) {
+  (test_in_range1<Ts>() , ...);
+}
+
+constexpr bool test() {
+  std::tuple<
+#ifndef TEST_HAS_NO_INT128
+      __int128_t, __uint128_t,
+#endif
+      unsigned long long, long long, unsigned long, long, unsigned int, int,
+      unsigned short, short, unsigned char, signed char> types;
+  test1(types);
+  test_in_range();
+  return true;
+}
+
+int main(int, char**) {
+  ASSERT_NOEXCEPT(std::in_range<int>(-1));
+  test();
+  static_assert(test());
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.swap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.swap/swap.pass.cpp
new file mode 100644
index 0000000..3c9439b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.swap/swap.pass.cpp
@@ -0,0 +1,119 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template<class T>
+//   requires MoveAssignable<T> && MoveConstructible<T>
+//   void
+//   swap(T& a, T& b);
+
+#include <cassert>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+struct CopyOnly {
+    CopyOnly() {}
+    CopyOnly(CopyOnly const&) noexcept {}
+    CopyOnly& operator=(CopyOnly const&) { return *this; }
+};
+
+struct MoveOnly {
+    MoveOnly() {}
+    MoveOnly(MoveOnly&&) {}
+    MoveOnly& operator=(MoveOnly&&) noexcept { return *this; }
+};
+
+struct NoexceptMoveOnly {
+    NoexceptMoveOnly() {}
+    NoexceptMoveOnly(NoexceptMoveOnly&&) noexcept {}
+    NoexceptMoveOnly& operator=(NoexceptMoveOnly&&) noexcept { return *this; }
+};
+
+struct NotMoveConstructible {
+    NotMoveConstructible& operator=(NotMoveConstructible&&) { return *this; }
+private:
+    NotMoveConstructible(NotMoveConstructible&&);
+};
+
+struct NotMoveAssignable {
+    NotMoveAssignable(NotMoveAssignable&&);
+private:
+    NotMoveAssignable& operator=(NotMoveAssignable&&);
+};
+
+template <class Tp>
+auto can_swap_test(int) -> decltype(std::swap(std::declval<Tp>(), std::declval<Tp>()));
+
+template <class Tp>
+auto can_swap_test(...) -> std::false_type;
+
+template <class Tp>
+constexpr bool can_swap() {
+    return std::is_same<decltype(can_swap_test<Tp>(0)), void>::value;
+}
+#endif
+
+#if TEST_STD_VER > 17
+constexpr bool test_swap_constexpr()
+{
+    int i = 1;
+    int j = 2;
+    std::swap(i, j);
+    return i == 2 && j == 1;
+}
+#endif // TEST_STD_VER > 17
+
+int main(int, char**)
+{
+
+    {
+        int i = 1;
+        int j = 2;
+        std::swap(i, j);
+        assert(i == 2);
+        assert(j == 1);
+    }
+#if TEST_STD_VER >= 11
+    {
+
+        std::unique_ptr<int> i(new int(1));
+        std::unique_ptr<int> j(new int(2));
+        std::swap(i, j);
+        assert(*i == 2);
+        assert(*j == 1);
+
+    }
+    {
+        // test that the swap
+        static_assert(can_swap<CopyOnly&>(), "");
+        static_assert(can_swap<MoveOnly&>(), "");
+        static_assert(can_swap<NoexceptMoveOnly&>(), "");
+
+        static_assert(!can_swap<NotMoveConstructible&>(), "");
+        static_assert(!can_swap<NotMoveAssignable&>(), "");
+
+        CopyOnly c;
+        MoveOnly m;
+        NoexceptMoveOnly nm;
+        static_assert(!noexcept(std::swap(c, c)), "");
+        static_assert(!noexcept(std::swap(m, m)), "");
+        static_assert(noexcept(std::swap(nm, nm)), "");
+    }
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_swap_constexpr());
+#endif // TEST_STD_VER > 17
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.swap/swap_array.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.swap/swap_array.pass.cpp
new file mode 100644
index 0000000..3d562dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.swap/swap_array.pass.cpp
@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template<ValueType T, size_t N>
+//   requires Swappable<T>
+//   void
+//   swap(T (&a)[N], T (&b)[N]);
+
+#include <algorithm>
+#include <cassert>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+
+#if TEST_STD_VER >= 11
+struct CopyOnly {
+    CopyOnly() {}
+    CopyOnly(CopyOnly const&) noexcept {}
+    CopyOnly& operator=(CopyOnly const&) { return *this; }
+};
+
+
+struct NoexceptMoveOnly {
+    NoexceptMoveOnly() {}
+    NoexceptMoveOnly(NoexceptMoveOnly&&) noexcept {}
+    NoexceptMoveOnly& operator=(NoexceptMoveOnly&&) noexcept { return *this; }
+};
+
+struct NotMoveConstructible {
+    NotMoveConstructible() {}
+    NotMoveConstructible& operator=(NotMoveConstructible&&) { return *this; }
+private:
+    NotMoveConstructible(NotMoveConstructible&&);
+};
+
+template <class Tp>
+auto can_swap_test(int) -> decltype(std::swap(std::declval<Tp>(), std::declval<Tp>()));
+
+template <class Tp>
+auto can_swap_test(...) -> std::false_type;
+
+template <class Tp>
+constexpr bool can_swap() {
+    return std::is_same<decltype(can_swap_test<Tp>(0)), void>::value;
+}
+#endif
+
+#if TEST_STD_VER > 17
+constexpr bool test_swap_constexpr()
+{
+    int i[3] = {1, 2, 3};
+    int j[3] = {4, 5, 6};
+    std::swap(i, j);
+    return i[0] == 4 &&
+           i[1] == 5 &&
+           i[2] == 6 &&
+           j[0] == 1 &&
+           j[1] == 2 &&
+           j[2] == 3;
+}
+#endif // TEST_STD_VER > 17
+
+int main(int, char**)
+{
+    {
+        int i[3] = {1, 2, 3};
+        int j[3] = {4, 5, 6};
+        std::swap(i, j);
+        assert(i[0] == 4);
+        assert(i[1] == 5);
+        assert(i[2] == 6);
+        assert(j[0] == 1);
+        assert(j[1] == 2);
+        assert(j[2] == 3);
+    }
+#if TEST_STD_VER >= 11
+    {
+        std::unique_ptr<int> i[3];
+        for (int k = 0; k < 3; ++k)
+            i[k].reset(new int(k+1));
+        std::unique_ptr<int> j[3];
+        for (int k = 0; k < 3; ++k)
+            j[k].reset(new int(k+4));
+        std::swap(i, j);
+        assert(*i[0] == 4);
+        assert(*i[1] == 5);
+        assert(*i[2] == 6);
+        assert(*j[0] == 1);
+        assert(*j[1] == 2);
+        assert(*j[2] == 3);
+    }
+    {
+        using CA = CopyOnly[42];
+        using MA = NoexceptMoveOnly[42];
+        using NA = NotMoveConstructible[42];
+        static_assert(can_swap<CA&>(), "");
+        static_assert(can_swap<MA&>(), "");
+        static_assert(!can_swap<NA&>(), "");
+
+        CA ca;
+        MA ma;
+        static_assert(!noexcept(std::swap(ca, ca)), "");
+        static_assert(noexcept(std::swap(ma, ma)), "");
+    }
+#endif
+
+#if TEST_STD_VER > 17
+    static_assert(test_swap_constexpr());
+#endif // TEST_STD_VER > 17
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.underlying/to_underlying.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.underlying/to_underlying.pass.cpp
new file mode 100644
index 0000000..d57dfd4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.underlying/to_underlying.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// [utility.underlying], to_underlying
+// template <class T>
+//     constexpr underlying_type_t<T> to_underlying( T value ) noexcept; // C++2b
+
+#include <utility>
+#include <cassert>
+#include <cstdint>
+#include <limits>
+
+#include "test_macros.h"
+
+enum class e_default { a = 0, b = 1, c = 2 };
+enum class e_ushort : unsigned short { d = 10, e = 25, f = 50 };
+enum class e_longlong : long long {
+  low = std::numeric_limits<long long>::min(),
+  high = std::numeric_limits<long long>::max()
+};
+enum e_non_class { enum_a = 10, enum_b = 11, enum_c = 12 };
+enum e_int : int {
+  enum_min = std::numeric_limits<int>::min(),
+  enum_max = std::numeric_limits<int>::max()
+};
+enum class e_bool : std::uint8_t { f = 0, t = 1 };
+
+struct WithBitfieldEnums {
+  e_default e1 : 3;
+  e_ushort e2 : 6;
+  e_bool e3 : 1;
+};
+
+constexpr bool test() {
+  ASSERT_NOEXCEPT(std::to_underlying(e_default::a));
+  ASSERT_SAME_TYPE(int, decltype(std::to_underlying(e_default::a)));
+  ASSERT_SAME_TYPE(unsigned short, decltype(std::to_underlying(e_ushort::d)));
+  ASSERT_SAME_TYPE(long long, decltype(std::to_underlying(e_longlong::low)));
+  ASSERT_SAME_TYPE(int, decltype(std::to_underlying(enum_min)));
+  ASSERT_SAME_TYPE(int, decltype(std::to_underlying(enum_max)));
+
+  assert(0 == std::to_underlying(e_default::a));
+  assert(1 == std::to_underlying(e_default::b));
+  assert(2 == std::to_underlying(e_default::c));
+
+  assert(10 == std::to_underlying(e_ushort::d));
+  assert(25 == std::to_underlying(e_ushort::e));
+  assert(50 == std::to_underlying(e_ushort::f));
+
+  // Check no truncating.
+  assert(std::numeric_limits<long long>::min() ==
+         std::to_underlying(e_longlong::low));
+  assert(std::numeric_limits<long long>::max() ==
+         std::to_underlying(e_longlong::high));
+
+  assert(10 == std::to_underlying(enum_a));
+  assert(11 == std::to_underlying(enum_b));
+  assert(12 == std::to_underlying(enum_c));
+  assert(std::numeric_limits<int>::min() == std::to_underlying(enum_min));
+  assert(std::numeric_limits<int>::max() == std::to_underlying(enum_max));
+
+  WithBitfieldEnums bf;
+  bf.e1 = static_cast<e_default>(3);
+  bf.e2 = e_ushort::e;
+  bf.e3 = e_bool::t;
+  assert(3 == std::to_underlying(bf.e1));
+  assert(25 == std::to_underlying(bf.e2));
+  assert(1 == std::to_underlying(bf.e3));
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.underlying/to_underlying.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.underlying/to_underlying.verify.cpp
new file mode 100644
index 0000000..b1b2881
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.underlying/to_underlying.verify.cpp
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// [utility.underlying], to_underlying
+// template <class T>
+//     constexpr underlying_type_t<T> to_underlying( T value ) noexcept; // C++2b
+
+#include <utility>
+
+struct S {};
+
+int main(int, char**) {
+  std::to_underlying(125); // expected-error {{no matching function for call}}
+  std::to_underlying(S{}); // expected-error {{no matching function for call}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/assert.unreachable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/assert.unreachable.pass.cpp
new file mode 100644
index 0000000..cfb3606
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/assert.unreachable.pass.cpp
@@ -0,0 +1,25 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// REQUIRES: has-unix-headers
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+// Make sure that reaching std::unreachable() with assertions enabled triggers an assertion.
+
+#include <utility>
+
+#include "check_assertion.h"
+
+int main(int, char**) {
+    TEST_LIBCPP_ASSERT_FAILURE(std::unreachable(), "std::unreachable() was reached");
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/unreachable.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/unreachable.pass.cpp
new file mode 100644
index 0000000..290c61f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/unreachable.pass.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// Make sure we can use `std::unreachable()`. We can't actually execute it cause that would be
+// UB, but we can make sure that it doesn't cause a linker error or something like that.
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+int main(int argc, char**) {
+    assert(argc == 1);
+    if (argc != 1) {
+        std::unreachable();
+    }
+
+    static_assert(std::is_same_v<decltype(std::unreachable()), void>);
+
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/unreachable.verify.cpp b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/unreachable.verify.cpp
new file mode 100644
index 0000000..28f8796
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/utility/utility.unreachable/unreachable.verify.cpp
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+#include <utility>
+
+[[noreturn]] void unreachable() { std::unreachable(); } // expected-no-diagnostics
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.bad_variant_access/bad_variant_access.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.bad_variant_access/bad_variant_access.pass.cpp
new file mode 100644
index 0000000..0db55cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.bad_variant_access/bad_variant_access.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}}
+
+// <variant>
+
+/*
+
+ class bad_variant_access : public exception {
+public:
+  bad_variant_access() noexcept;
+  virtual const char* what() const noexcept;
+};
+
+*/
+
+#include <cassert>
+#include <exception>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  static_assert(std::is_base_of<std::exception, std::bad_variant_access>::value,
+                "");
+  static_assert(noexcept(std::bad_variant_access{}), "must be noexcept");
+  static_assert(noexcept(std::bad_variant_access{}.what()), "must be noexcept");
+  std::bad_variant_access ex;
+  assert(ex.what());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.general/nothing_to_do.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.general/nothing_to_do.pass.cpp
new file mode 100644
index 0000000..796f3c3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.general/nothing_to_do.pass.cpp
@@ -0,0 +1,11 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+int main(int, char**) {
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_if_index.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_if_index.pass.cpp
new file mode 100644
index 0000000..3333d2a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_if_index.pass.cpp
@@ -0,0 +1,132 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <size_t I, class... Types>
+//  constexpr add_pointer_t<variant_alternative_t<I, variant<Types...>>>
+//   get_if(variant<Types...>* v) noexcept;
+// template <size_t I, class... Types>
+//  constexpr add_pointer_t<const variant_alternative_t<I, variant<Types...>>>
+//   get_if(const variant<Types...>* v) noexcept;
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+#include <cassert>
+#include <memory>
+#include <variant>
+
+void test_const_get_if() {
+  {
+    using V = std::variant<int>;
+    constexpr const V *v = nullptr;
+    static_assert(std::get_if<0>(v) == nullptr, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42);
+    ASSERT_NOEXCEPT(std::get_if<0>(&v));
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), const int *);
+    static_assert(*std::get_if<0>(&v) == 42, "");
+    static_assert(std::get_if<1>(&v) == nullptr, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get_if<1>(&v)), const long *);
+    static_assert(*std::get_if<1>(&v) == 42, "");
+    static_assert(std::get_if<0>(&v) == nullptr, "");
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), const int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+#endif
+}
+
+void test_get_if() {
+  {
+    using V = std::variant<int>;
+    V *v = nullptr;
+    assert(std::get_if<0>(v) == nullptr);
+  }
+  {
+    using V = std::variant<int, long>;
+    V v(42);
+    ASSERT_NOEXCEPT(std::get_if<0>(&v));
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), int *);
+    assert(*std::get_if<0>(&v) == 42);
+    assert(std::get_if<1>(&v) == nullptr);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get_if<1>(&v)), const long *);
+    assert(*std::get_if<1>(&v) == 42);
+    assert(std::get_if<0>(&v) == nullptr);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), const int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<0>(&v)), const int *);
+    assert(std::get_if<0>(&v) == &x);
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_const_get_if();
+  test_get_if();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_if_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_if_type.pass.cpp
new file mode 100644
index 0000000..b81e000
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_if_type.pass.cpp
@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+//  template <class T, class... Types>
+//  constexpr add_pointer_t<T> get_if(variant<Types...>* v) noexcept;
+// template <class T, class... Types>
+//  constexpr add_pointer_t<const T> get_if(const variant<Types...>* v)
+//  noexcept;
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+#include <cassert>
+#include <variant>
+
+void test_const_get_if() {
+  {
+    using V = std::variant<int>;
+    constexpr const V *v = nullptr;
+    static_assert(std::get_if<int>(v) == nullptr, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42);
+    ASSERT_NOEXCEPT(std::get_if<int>(&v));
+    ASSERT_SAME_TYPE(decltype(std::get_if<int>(&v)), const int *);
+    static_assert(*std::get_if<int>(&v) == 42, "");
+    static_assert(std::get_if<const long>(&v) == nullptr, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get_if<const long>(&v)), const long *);
+    static_assert(*std::get_if<const long>(&v) == 42, "");
+    static_assert(std::get_if<int>(&v) == nullptr, "");
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get_if<int &>(&v)), int *);
+    assert(std::get_if<int &>(&v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<int &&>(&v)), int *);
+    assert(std::get_if<int &&>(&v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<const int &&>(&v)), const int *);
+    assert(std::get_if<const int &&>(&v) == &x);
+  }
+#endif
+}
+
+void test_get_if() {
+  {
+    using V = std::variant<int>;
+    V *v = nullptr;
+    assert(std::get_if<int>(v) == nullptr);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42);
+    ASSERT_NOEXCEPT(std::get_if<int>(&v));
+    ASSERT_SAME_TYPE(decltype(std::get_if<int>(&v)), int *);
+    assert(*std::get_if<int>(&v) == 42);
+    assert(std::get_if<const long>(&v) == nullptr);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get_if<const long>(&v)), const long *);
+    assert(*std::get_if<const long>(&v) == 42);
+    assert(std::get_if<int>(&v) == nullptr);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get_if<int &>(&v)), int *);
+    assert(std::get_if<int &>(&v) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get_if<const int &>(&v)), const int *);
+    assert(std::get_if<const int &>(&v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<int &&>(&v)), int *);
+    assert(std::get_if<int &&>(&v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get_if<const int &&>(&v)), const int *);
+    assert(std::get_if<const int &&>(&v) == &x);
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_const_get_if();
+  test_get_if();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_index.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_index.pass.cpp
new file mode 100644
index 0000000..b18d94f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_index.pass.cpp
@@ -0,0 +1,287 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <size_t I, class... Types>
+//   constexpr variant_alternative_t<I, variant<Types...>>&
+//   get(variant<Types...>& v);
+// template <size_t I, class... Types>
+//   constexpr variant_alternative_t<I, variant<Types...>>&&
+//   get(variant<Types...>&& v);
+// template <size_t I, class... Types>
+//   constexpr variant_alternative_t<I, variant<Types...>> const& get(const
+//   variant<Types...>& v);
+// template <size_t I, class... Types>
+//  constexpr variant_alternative_t<I, variant<Types...>> const&& get(const
+//  variant<Types...>&& v);
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+#include "variant_test_helpers.h"
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+void test_const_lvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<0>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), const int &);
+    static_assert(std::get<0>(v) == 42, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    const V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<0>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), const int &);
+    assert(std::get<0>(v) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42l);
+    ASSERT_NOT_NOEXCEPT(std::get<1>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<1>(v)), const long &);
+    static_assert(std::get<1>(v) == 42, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    const V v(42l);
+    ASSERT_NOT_NOEXCEPT(std::get<1>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<1>(v)), const long &);
+    assert(std::get<1>(v) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), int &);
+    assert(&std::get<0>(v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), int &);
+    assert(&std::get<0>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), const int &);
+    assert(&std::get<0>(v) == &x);
+  }
+#endif
+}
+
+void test_lvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<0>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), int &);
+    assert(std::get<0>(v) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(v)), const long &);
+    assert(std::get<1>(v) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), int &);
+    assert(&std::get<0>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), const int &);
+    assert(&std::get<0>(v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), int &);
+    assert(&std::get<0>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(v)), const int &);
+    assert(&std::get<0>(v) == &x);
+  }
+#endif
+}
+
+void test_rvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<0>(std::move(v)));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), int &&);
+    assert(std::get<0>(std::move(v)) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(std::move(v))), const long &&);
+    assert(std::get<1>(std::move(v)) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), int &);
+    assert(&std::get<0>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), const int &);
+    assert(&std::get<0>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), int &&);
+    int &&xref = std::get<0>(std::move(v));
+    assert(&xref == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), const int &&);
+    const int &&xref = std::get<0>(std::move(v));
+    assert(&xref == &x);
+  }
+#endif
+}
+
+void test_const_rvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    const V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<0>(std::move(v)));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), const int &&);
+    assert(std::get<0>(std::move(v)) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    const V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get<1>(std::move(v))), const long &&);
+    assert(std::get<1>(std::move(v)) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), int &);
+    assert(&std::get<0>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), const int &);
+    assert(&std::get<0>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), int &&);
+    int &&xref = std::get<0>(std::move(v));
+    assert(&xref == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<0>(std::move(v))), const int &&);
+    const int &&xref = std::get<0>(std::move(v));
+    assert(&xref == &x);
+  }
+#endif
+}
+
+template <std::size_t I> using Idx = std::integral_constant<size_t, I>;
+
+void test_throws_for_all_value_categories() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using V = std::variant<int, long>;
+  V v0(42);
+  const V &cv0 = v0;
+  assert(v0.index() == 0);
+  V v1(42l);
+  const V &cv1 = v1;
+  assert(v1.index() == 1);
+  std::integral_constant<size_t, 0> zero;
+  std::integral_constant<size_t, 1> one;
+  auto test = [](auto idx, auto &&v) {
+    using Idx = decltype(idx);
+    try {
+      TEST_IGNORE_NODISCARD std::get<Idx::value>(std::forward<decltype(v)>(v));
+    } catch (const std::bad_variant_access &) {
+      return true;
+    } catch (...) { /* ... */
+    }
+    return false;
+  };
+  { // lvalue test cases
+    assert(test(one, v0));
+    assert(test(zero, v1));
+  }
+  { // const lvalue test cases
+    assert(test(one, cv0));
+    assert(test(zero, cv1));
+  }
+  { // rvalue test cases
+    assert(test(one, std::move(v0)));
+    assert(test(zero, std::move(v1)));
+  }
+  { // const rvalue test cases
+    assert(test(one, std::move(cv0)));
+    assert(test(zero, std::move(cv1)));
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_const_lvalue_get();
+  test_lvalue_get();
+  test_rvalue_get();
+  test_const_rvalue_get();
+  test_throws_for_all_value_categories();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_type.pass.cpp
new file mode 100644
index 0000000..dc938d1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/get_type.pass.cpp
@@ -0,0 +1,287 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class T, class... Types> constexpr T& get(variant<Types...>& v);
+// template <class T, class... Types> constexpr T&& get(variant<Types...>&& v);
+// template <class T, class... Types> constexpr const T& get(const
+// variant<Types...>& v);
+// template <class T, class... Types> constexpr const T&& get(const
+// variant<Types...>&& v);
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+#include "variant_test_helpers.h"
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+void test_const_lvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<int>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<int>(v)), const int &);
+    static_assert(std::get<int>(v) == 42, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    const V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<int>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<int>(v)), const int &);
+    assert(std::get<int>(v) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    constexpr V v(42l);
+    ASSERT_NOT_NOEXCEPT(std::get<const long>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<const long>(v)), const long &);
+    static_assert(std::get<const long>(v) == 42, "");
+  }
+  {
+    using V = std::variant<int, const long>;
+    const V v(42l);
+    ASSERT_NOT_NOEXCEPT(std::get<const long>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<const long>(v)), const long &);
+    assert(std::get<const long>(v) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<int &>(v)), int &);
+    assert(&std::get<int &>(v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<int &&>(v)), int &);
+    assert(&std::get<int &&>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<const int &&>(v)), const int &);
+    assert(&std::get<const int &&>(v) == &x);
+  }
+#endif
+}
+
+void test_lvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<int>(v));
+    ASSERT_SAME_TYPE(decltype(std::get<int>(v)), int &);
+    assert(std::get<int>(v) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get<const long>(v)), const long &);
+    assert(std::get<const long>(v) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<int &>(v)), int &);
+    assert(&std::get<int &>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<const int &>(v)), const int &);
+    assert(&std::get<const int &>(v) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<int &&>(v)), int &);
+    assert(&std::get<int &&>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<const int &&>(v)), const int &);
+    assert(&std::get<const int &&>(v) == &x);
+  }
+#endif
+}
+
+void test_rvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<int>(std::move(v)));
+    ASSERT_SAME_TYPE(decltype(std::get<int>(std::move(v))), int &&);
+    assert(std::get<int>(std::move(v)) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get<const long>(std::move(v))),
+                     const long &&);
+    assert(std::get<const long>(std::move(v)) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<int &>(std::move(v))), int &);
+    assert(&std::get<int &>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<const int &>(std::move(v))),
+                     const int &);
+    assert(&std::get<const int &>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<int &&>(std::move(v))), int &&);
+    int &&xref = std::get<int &&>(std::move(v));
+    assert(&xref == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<const int &&>(std::move(v))),
+                     const int &&);
+    const int &&xref = std::get<const int &&>(std::move(v));
+    assert(&xref == &x);
+  }
+#endif
+}
+
+void test_const_rvalue_get() {
+  {
+    using V = std::variant<int, const long>;
+    const V v(42);
+    ASSERT_NOT_NOEXCEPT(std::get<int>(std::move(v)));
+    ASSERT_SAME_TYPE(decltype(std::get<int>(std::move(v))), const int &&);
+    assert(std::get<int>(std::move(v)) == 42);
+  }
+  {
+    using V = std::variant<int, const long>;
+    const V v(42l);
+    ASSERT_SAME_TYPE(decltype(std::get<const long>(std::move(v))),
+                     const long &&);
+    assert(std::get<const long>(std::move(v)) == 42);
+  }
+// FIXME: Remove these once reference support is reinstated
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<int &>(std::move(v))), int &);
+    assert(&std::get<int &>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<const int &>;
+    int x = 42;
+    const V v(x);
+    ASSERT_SAME_TYPE(decltype(std::get<const int &>(std::move(v))),
+                     const int &);
+    assert(&std::get<const int &>(std::move(v)) == &x);
+  }
+  {
+    using V = std::variant<int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<int &&>(std::move(v))), int &&);
+    int &&xref = std::get<int &&>(std::move(v));
+    assert(&xref == &x);
+  }
+  {
+    using V = std::variant<const int &&>;
+    int x = 42;
+    const V v(std::move(x));
+    ASSERT_SAME_TYPE(decltype(std::get<const int &&>(std::move(v))),
+                     const int &&);
+    const int &&xref = std::get<const int &&>(std::move(v));
+    assert(&xref == &x);
+  }
+#endif
+}
+
+template <class Tp> struct identity { using type = Tp; };
+
+void test_throws_for_all_value_categories() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using V = std::variant<int, long>;
+  V v0(42);
+  const V &cv0 = v0;
+  assert(v0.index() == 0);
+  V v1(42l);
+  const V &cv1 = v1;
+  assert(v1.index() == 1);
+  identity<int> zero;
+  identity<long> one;
+  auto test = [](auto idx, auto &&v) {
+    using Idx = decltype(idx);
+    try {
+      TEST_IGNORE_NODISCARD std::get<typename Idx::type>(std::forward<decltype(v)>(v));
+    } catch (const std::bad_variant_access &) {
+      return true;
+    } catch (...) { /* ... */
+    }
+    return false;
+  };
+  { // lvalue test cases
+    assert(test(one, v0));
+    assert(test(zero, v1));
+  }
+  { // const lvalue test cases
+    assert(test(one, cv0));
+    assert(test(zero, cv1));
+  }
+  { // rvalue test cases
+    assert(test(one, std::move(v0)));
+    assert(test(zero, std::move(v1)));
+  }
+  { // const rvalue test cases
+    assert(test(one, std::move(cv0)));
+    assert(test(zero, std::move(cv1)));
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_const_lvalue_get();
+  test_lvalue_get();
+  test_rvalue_get();
+  test_const_rvalue_get();
+  test_throws_for_all_value_categories();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/holds_alternative.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/holds_alternative.pass.cpp
new file mode 100644
index 0000000..9fd3822
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.get/holds_alternative.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class T, class... Types>
+// constexpr bool holds_alternative(const variant<Types...>& v) noexcept;
+
+#include "test_macros.h"
+#include <variant>
+
+int main(int, char**) {
+  {
+    using V = std::variant<int>;
+    constexpr V v;
+    static_assert(std::holds_alternative<int>(v), "");
+  }
+  {
+    using V = std::variant<int, long>;
+    constexpr V v;
+    static_assert(std::holds_alternative<int>(v), "");
+    static_assert(!std::holds_alternative<long>(v), "");
+  }
+  { // noexcept test
+    using V = std::variant<int>;
+    const V v;
+    ASSERT_NOEXCEPT(std::holds_alternative<int>(v));
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.hash/enabled_hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.hash/enabled_hash.pass.cpp
new file mode 100644
index 0000000..ea120bf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.hash/enabled_hash.pass.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// Test that <variant> provides all of the arithmetic, enum, and pointer
+// hash specializations.
+
+#include <variant>
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  test_library_hash_specializations_available();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.hash/hash.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.hash/hash.pass.cpp
new file mode 100644
index 0000000..770bbec
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.hash/hash.pass.cpp
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class... Types> struct hash<variant<Types...>>;
+// template <> struct hash<monostate>;
+
+#include <cassert>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+#include "poisoned_hash_helper.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+namespace std {
+template <> struct hash<::MakeEmptyT> {
+  size_t operator()(const ::MakeEmptyT &) const {
+    assert(false);
+    return 0;
+  }
+};
+}
+#endif
+
+void test_hash_variant() {
+  {
+    using V = std::variant<int, long, int>;
+    using H = std::hash<V>;
+    const V v(std::in_place_index<0>, 42);
+    const V v_copy = v;
+    V v2(std::in_place_index<0>, 100);
+    const H h{};
+    assert(h(v) == h(v));
+    assert(h(v) != h(v2));
+    assert(h(v) == h(v_copy));
+    {
+      ASSERT_SAME_TYPE(decltype(h(v)), std::size_t);
+      static_assert(std::is_copy_constructible<H>::value, "");
+    }
+  }
+  {
+    using V = std::variant<std::monostate, int, long, const char *>;
+    using H = std::hash<V>;
+    const char *str = "hello";
+    const V v0;
+    const V v0_other;
+    const V v1(42);
+    const V v1_other(100);
+    V v2(100l);
+    V v2_other(999l);
+    V v3(str);
+    V v3_other("not hello");
+    const H h{};
+    assert(h(v0) == h(v0));
+    assert(h(v0) == h(v0_other));
+    assert(h(v1) == h(v1));
+    assert(h(v1) != h(v1_other));
+    assert(h(v2) == h(v2));
+    assert(h(v2) != h(v2_other));
+    assert(h(v3) == h(v3));
+    assert(h(v3) != h(v3_other));
+    assert(h(v0) != h(v1));
+    assert(h(v0) != h(v2));
+    assert(h(v0) != h(v3));
+    assert(h(v1) != h(v2));
+    assert(h(v1) != h(v3));
+    assert(h(v2) != h(v3));
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using H = std::hash<V>;
+    V v;
+    makeEmpty(v);
+    V v2;
+    makeEmpty(v2);
+    const H h{};
+    assert(h(v) == h(v2));
+  }
+#endif
+}
+
+void test_hash_monostate() {
+  using H = std::hash<std::monostate>;
+  const H h{};
+  std::monostate m1{};
+  const std::monostate m2{};
+  assert(h(m1) == h(m1));
+  assert(h(m2) == h(m2));
+  assert(h(m1) == h(m2));
+  {
+    ASSERT_SAME_TYPE(decltype(h(m1)), std::size_t);
+    ASSERT_NOEXCEPT(h(m1));
+    static_assert(std::is_copy_constructible<H>::value, "");
+  }
+  {
+    test_hash_enabled_for_type<std::monostate>();
+  }
+}
+
+void test_hash_variant_duplicate_elements() {
+    // Test that the index of the alternative participates in the hash value.
+    using V = std::variant<std::monostate, std::monostate>;
+    using H = std::hash<V>;
+    H h{};
+    const V v1(std::in_place_index<0>);
+    const V v2(std::in_place_index<1>);
+    assert(h(v1) == h(v1));
+    assert(h(v2) == h(v2));
+    LIBCPP_ASSERT(h(v1) != h(v2));
+}
+
+struct A {};
+struct B {};
+
+namespace std {
+
+template <>
+struct hash<B> {
+  size_t operator()(B const&) const {
+    return 0;
+  }
+};
+
+}
+
+void test_hash_variant_enabled() {
+  {
+    test_hash_enabled_for_type<std::variant<int> >();
+    test_hash_enabled_for_type<std::variant<int*, long, double, const int> >();
+  }
+  {
+    test_hash_disabled_for_type<std::variant<int, A>>();
+    test_hash_disabled_for_type<std::variant<const A, void*>>();
+  }
+  {
+    test_hash_enabled_for_type<std::variant<int, B>>();
+    test_hash_enabled_for_type<std::variant<const B, int>>();
+  }
+}
+
+int main(int, char**) {
+  test_hash_variant();
+  test_hash_variant_duplicate_elements();
+  test_hash_monostate();
+  test_hash_variant_enabled();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_alternative.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_alternative.fail.cpp
new file mode 100644
index 0000000..934d047
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_alternative.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <size_t I, class T> struct variant_alternative; // undefined
+// template <size_t I, class T> struct variant_alternative<I, const T>;
+// template <size_t I, class T> struct variant_alternative<I, volatile T>;
+// template <size_t I, class T> struct variant_alternative<I, const volatile T>;
+// template <size_t I, class T>
+//   using variant_alternative_t = typename variant_alternative<I, T>::type;
+//
+// template <size_t I, class... Types>
+//    struct variant_alternative<I, variant<Types...>>;
+
+#include <memory>
+#include <type_traits>
+#include <variant>
+
+int main(int, char**) {
+    using V = std::variant<int, void *, const void *, long double>;
+    std::variant_alternative<4, V>::type foo;  // expected-error@variant:* {{Index out of bounds in std::variant_alternative<>}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_alternative.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_alternative.pass.cpp
new file mode 100644
index 0000000..f5e1e3d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_alternative.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <size_t I, class T> struct variant_alternative; // undefined
+// template <size_t I, class T> struct variant_alternative<I, const T>;
+// template <size_t I, class T> struct variant_alternative<I, volatile T>;
+// template <size_t I, class T> struct variant_alternative<I, const volatile T>;
+// template <size_t I, class T>
+//   using variant_alternative_t = typename variant_alternative<I, T>::type;
+//
+// template <size_t I, class... Types>
+//    struct variant_alternative<I, variant<Types...>>;
+
+#include <memory>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+template <class V, size_t I, class E> void test() {
+  static_assert(
+      std::is_same_v<typename std::variant_alternative<I, V>::type, E>, "");
+  static_assert(
+      std::is_same_v<typename std::variant_alternative<I, const V>::type,
+                     const E>,
+      "");
+  static_assert(
+      std::is_same_v<typename std::variant_alternative<I, volatile V>::type,
+                     volatile E>,
+      "");
+  static_assert(
+      std::is_same_v<
+          typename std::variant_alternative<I, const volatile V>::type,
+          const volatile E>,
+      "");
+  static_assert(std::is_same_v<std::variant_alternative_t<I, V>, E>, "");
+  static_assert(std::is_same_v<std::variant_alternative_t<I, const V>, const E>,
+                "");
+  static_assert(
+      std::is_same_v<std::variant_alternative_t<I, volatile V>, volatile E>,
+      "");
+  static_assert(std::is_same_v<std::variant_alternative_t<I, const volatile V>,
+                               const volatile E>,
+                "");
+}
+
+int main(int, char**) {
+  {
+    using V = std::variant<int, void *, const void *, long double>;
+    test<V, 0, int>();
+    test<V, 1, void *>();
+    test<V, 2, const void *>();
+    test<V, 3, long double>();
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int, int &, const int &, int &&, long double>;
+    test<V, 0, int>();
+    test<V, 1, int &>();
+    test<V, 2, const int &>();
+    test<V, 3, int &&>();
+    test<V, 4, long double>();
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_size.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_size.pass.cpp
new file mode 100644
index 0000000..8c5b70d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.helpers/variant_size.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class T> struct variant_size; // undefined
+// template <class T> struct variant_size<const T>;
+// template <class T> struct variant_size<volatile T>;
+// template <class T> struct variant_size<const volatile T>;
+// template <class T> constexpr size_t variant_size_v
+//     = variant_size<T>::value;
+
+#include <memory>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+
+template <class V, size_t E> void test() {
+  static_assert(std::variant_size<V>::value == E, "");
+  static_assert(std::variant_size<const V>::value == E, "");
+  static_assert(std::variant_size<volatile V>::value == E, "");
+  static_assert(std::variant_size<const volatile V>::value == E, "");
+  static_assert(std::variant_size_v<V> == E, "");
+  static_assert(std::variant_size_v<const V> == E, "");
+  static_assert(std::variant_size_v<volatile V> == E, "");
+  static_assert(std::variant_size_v<const volatile V> == E, "");
+  static_assert(std::is_base_of<std::integral_constant<std::size_t, E>,
+                                std::variant_size<V>>::value,
+                "");
+};
+
+int main(int, char**) {
+  test<std::variant<>, 0>();
+  test<std::variant<void *>, 1>();
+  test<std::variant<long, long, void *, double>, 4>();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.monostate.relops/relops.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.monostate.relops/relops.pass.cpp
new file mode 100644
index 0000000..fab67be
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.monostate.relops/relops.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// constexpr bool operator<(monostate, monostate) noexcept { return false; }
+// constexpr bool operator>(monostate, monostate) noexcept { return false; }
+// constexpr bool operator<=(monostate, monostate) noexcept { return true; }
+// constexpr bool operator>=(monostate, monostate) noexcept { return true; }
+// constexpr bool operator==(monostate, monostate) noexcept { return true; }
+// constexpr bool operator!=(monostate, monostate) noexcept { return false; }
+// constexpr strong_ordering operator<=>(monostate, monostate) noexcept { return strong_ordering::equal; } // since C++20
+
+#include <cassert>
+#include <variant>
+
+#include "test_comparisons.h"
+#include "test_macros.h"
+
+constexpr bool test() {
+  using M = std::monostate;
+  constexpr M m1{};
+  constexpr M m2{};
+  assert(testComparisons(m1, m2, /*isEqual*/ true, /*isLess*/ false));
+  AssertComparisonsAreNoexcept<M>();
+
+#if TEST_STD_VER > 17
+  assert(testOrder(m1, m2, std::strong_ordering::equal));
+  AssertOrderAreNoexcept<M>();
+#endif // TEST_STD_VER > 17
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.monostate/monostate.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.monostate/monostate.pass.cpp
new file mode 100644
index 0000000..9f62afd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.monostate/monostate.pass.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// struct monostate {};
+
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  using M = std::monostate;
+  static_assert(std::is_trivially_default_constructible<M>::value, "");
+  static_assert(std::is_trivially_copy_constructible<M>::value, "");
+  static_assert(std::is_trivially_copy_assignable<M>::value, "");
+  static_assert(std::is_trivially_destructible<M>::value, "");
+  constexpr M m{};
+  ((void)m);
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/relops.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/relops.pass.cpp
new file mode 100644
index 0000000..c1a5b8e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/relops.pass.cpp
@@ -0,0 +1,276 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types>
+// constexpr bool
+// operator==(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator!=(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator<(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator>(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator<=(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator>=(variant<Types...> const&, variant<Types...> const&) noexcept;
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct MakeEmptyT {
+  MakeEmptyT() = default;
+  MakeEmptyT(MakeEmptyT &&) { throw 42; }
+  MakeEmptyT &operator=(MakeEmptyT &&) { throw 42; }
+};
+inline bool operator==(const MakeEmptyT &, const MakeEmptyT &) {
+  assert(false);
+  return false;
+}
+inline bool operator!=(const MakeEmptyT &, const MakeEmptyT &) {
+  assert(false);
+  return false;
+}
+inline bool operator<(const MakeEmptyT &, const MakeEmptyT &) {
+  assert(false);
+  return false;
+}
+inline bool operator<=(const MakeEmptyT &, const MakeEmptyT &) {
+  assert(false);
+  return false;
+}
+inline bool operator>(const MakeEmptyT &, const MakeEmptyT &) {
+  assert(false);
+  return false;
+}
+inline bool operator>=(const MakeEmptyT &, const MakeEmptyT &) {
+  assert(false);
+  return false;
+}
+
+template <class Variant> void makeEmpty(Variant &v) {
+  Variant v2(std::in_place_type<MakeEmptyT>);
+  try {
+    v = std::move(v2);
+    assert(false);
+  } catch (...) {
+    assert(v.valueless_by_exception());
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+struct MyBool {
+  bool value;
+  constexpr explicit MyBool(bool v) : value(v) {}
+  constexpr operator bool() const noexcept { return value; }
+};
+
+struct ComparesToMyBool {
+  int value = 0;
+};
+inline constexpr MyBool operator==(const ComparesToMyBool& LHS, const ComparesToMyBool& RHS) noexcept {
+  return MyBool(LHS.value == RHS.value);
+}
+inline constexpr MyBool operator!=(const ComparesToMyBool& LHS, const ComparesToMyBool& RHS) noexcept {
+  return MyBool(LHS.value != RHS.value);
+}
+inline constexpr MyBool operator<(const ComparesToMyBool& LHS, const ComparesToMyBool& RHS) noexcept {
+  return MyBool(LHS.value < RHS.value);
+}
+inline constexpr MyBool operator<=(const ComparesToMyBool& LHS, const ComparesToMyBool& RHS) noexcept {
+  return MyBool(LHS.value <= RHS.value);
+}
+inline constexpr MyBool operator>(const ComparesToMyBool& LHS, const ComparesToMyBool& RHS) noexcept {
+  return MyBool(LHS.value > RHS.value);
+}
+inline constexpr MyBool operator>=(const ComparesToMyBool& LHS, const ComparesToMyBool& RHS) noexcept {
+  return MyBool(LHS.value >= RHS.value);
+}
+
+template <class T1, class T2>
+void test_equality_basic() {
+  {
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{42});
+    constexpr V v2(std::in_place_index<0>, T1{42});
+    static_assert(v1 == v2, "");
+    static_assert(v2 == v1, "");
+    static_assert(!(v1 != v2), "");
+    static_assert(!(v2 != v1), "");
+  }
+  {
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{42});
+    constexpr V v2(std::in_place_index<0>, T1{43});
+    static_assert(!(v1 == v2), "");
+    static_assert(!(v2 == v1), "");
+    static_assert(v1 != v2, "");
+    static_assert(v2 != v1, "");
+  }
+  {
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{42});
+    constexpr V v2(std::in_place_index<1>, T2{42});
+    static_assert(!(v1 == v2), "");
+    static_assert(!(v2 == v1), "");
+    static_assert(v1 != v2, "");
+    static_assert(v2 != v1, "");
+  }
+  {
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<1>, T2{42});
+    constexpr V v2(std::in_place_index<1>, T2{42});
+    static_assert(v1 == v2, "");
+    static_assert(v2 == v1, "");
+    static_assert(!(v1 != v2), "");
+    static_assert(!(v2 != v1), "");
+  }
+}
+
+void test_equality() {
+  test_equality_basic<int, long>();
+  test_equality_basic<ComparesToMyBool, int>();
+  test_equality_basic<int, ComparesToMyBool>();
+  test_equality_basic<ComparesToMyBool, ComparesToMyBool>();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    V v2;
+    makeEmpty(v2);
+    assert(!(v1 == v2));
+    assert(!(v2 == v1));
+    assert(v1 != v2);
+    assert(v2 != v1);
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    assert(!(v1 == v2));
+    assert(!(v2 == v1));
+    assert(v1 != v2);
+    assert(v2 != v1);
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    makeEmpty(v2);
+    assert(v1 == v2);
+    assert(v2 == v1);
+    assert(!(v1 != v2));
+    assert(!(v2 != v1));
+  }
+#endif
+}
+
+template <class Var>
+constexpr bool test_less(const Var &l, const Var &r, bool expect_less,
+                         bool expect_greater) {
+  static_assert(std::is_same_v<decltype(l < r), bool>, "");
+  static_assert(std::is_same_v<decltype(l <= r), bool>, "");
+  static_assert(std::is_same_v<decltype(l > r), bool>, "");
+  static_assert(std::is_same_v<decltype(l >= r), bool>, "");
+
+  return ((l < r) == expect_less) && (!(l >= r) == expect_less) &&
+         ((l > r) == expect_greater) && (!(l <= r) == expect_greater);
+}
+
+template <class T1, class T2>
+void test_relational_basic() {
+  { // same index, same value
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{1});
+    constexpr V v2(std::in_place_index<0>, T1{1});
+    static_assert(test_less(v1, v2, false, false), "");
+  }
+  { // same index, value < other_value
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{0});
+    constexpr V v2(std::in_place_index<0>, T1{1});
+    static_assert(test_less(v1, v2, true, false), "");
+  }
+  { // same index, value > other_value
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{1});
+    constexpr V v2(std::in_place_index<0>, T1{0});
+    static_assert(test_less(v1, v2, false, true), "");
+  }
+  { // LHS.index() < RHS.index()
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<0>, T1{0});
+    constexpr V v2(std::in_place_index<1>, T2{0});
+    static_assert(test_less(v1, v2, true, false), "");
+  }
+  { // LHS.index() > RHS.index()
+    using V = std::variant<T1, T2>;
+    constexpr V v1(std::in_place_index<1>, T2{0});
+    constexpr V v2(std::in_place_index<0>, T1{0});
+    static_assert(test_less(v1, v2, false, true), "");
+  }
+}
+
+void test_relational() {
+  test_relational_basic<int, long>();
+  test_relational_basic<ComparesToMyBool, int>();
+  test_relational_basic<int, ComparesToMyBool>();
+  test_relational_basic<ComparesToMyBool, ComparesToMyBool>();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  { // LHS.index() < RHS.index(), RHS is empty
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    V v2;
+    makeEmpty(v2);
+    assert(test_less(v1, v2, false, true));
+  }
+  { // LHS.index() > RHS.index(), LHS is empty
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    assert(test_less(v1, v2, true, false));
+  }
+  { // LHS.index() == RHS.index(), LHS and RHS are empty
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    makeEmpty(v2);
+    assert(test_less(v1, v2, false, false));
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_equality();
+  test_relational();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/relops_bool_conv.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/relops_bool_conv.fail.cpp
new file mode 100644
index 0000000..ebc6020
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/relops_bool_conv.fail.cpp
@@ -0,0 +1,88 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types>
+// constexpr bool
+// operator==(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator!=(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator<(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator>(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator<=(variant<Types...> const&, variant<Types...> const&) noexcept;
+//
+// template <class ...Types>
+// constexpr bool
+// operator>=(variant<Types...> const&, variant<Types...> const&) noexcept;
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+
+
+struct MyBoolExplicit {
+  bool value;
+  constexpr explicit MyBoolExplicit(bool v) : value(v) {}
+  constexpr explicit operator bool() const noexcept { return value; }
+};
+
+struct ComparesToMyBoolExplicit {
+  int value = 0;
+};
+inline constexpr MyBoolExplicit operator==(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
+  return MyBoolExplicit(LHS.value == RHS.value);
+}
+inline constexpr MyBoolExplicit operator!=(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
+  return MyBoolExplicit(LHS.value != RHS.value);
+}
+inline constexpr MyBoolExplicit operator<(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
+  return MyBoolExplicit(LHS.value < RHS.value);
+}
+inline constexpr MyBoolExplicit operator<=(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
+  return MyBoolExplicit(LHS.value <= RHS.value);
+}
+inline constexpr MyBoolExplicit operator>(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
+  return MyBoolExplicit(LHS.value > RHS.value);
+}
+inline constexpr MyBoolExplicit operator>=(const ComparesToMyBoolExplicit& LHS, const ComparesToMyBoolExplicit& RHS) noexcept {
+  return MyBoolExplicit(LHS.value >= RHS.value);
+}
+
+
+int main(int, char**) {
+  using V = std::variant<int, ComparesToMyBoolExplicit>;
+  V v1(42);
+  V v2(101);
+  // expected-error-re@variant:* 6 {{{{(static_assert|static assertion)}} failed{{.*}}the relational operator does not return a type which is implicitly convertible to bool}}
+  // expected-error@variant:* 6 {{no viable conversion}}
+  (void)(v1 == v2); // expected-note {{here}}
+  (void)(v1 != v2); // expected-note {{here}}
+  (void)(v1 < v2); // expected-note {{here}}
+  (void)(v1 <= v2); // expected-note {{here}}
+  (void)(v1 > v2); // expected-note {{here}}
+  (void)(v1 >= v2); // expected-note {{here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/three_way.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/three_way.pass.cpp
new file mode 100644
index 0000000..c235967
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.relops/three_way.pass.cpp
@@ -0,0 +1,194 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// <variant>
+
+// template <class... Types> class variant;
+
+// template <class... Types> requires (three_way_comparable<Types> && ...)
+//   constexpr std::common_comparison_category_t<
+//     std::compare_three_way_result_t<Types>...>
+//   operator<=>(const variant<Types...>& t, const variant<Types...>& u);
+
+#include <cassert>
+#include <limits>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+#include "test_comparisons.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+// MakeEmptyT throws in operator=(&&), so we can move to it to create valueless-by-exception variants.
+struct MakeEmptyT {
+  MakeEmptyT() = default;
+  MakeEmptyT(MakeEmptyT&&) { throw 42; }
+  MakeEmptyT& operator=(MakeEmptyT&&) { throw 42; }
+};
+inline bool operator==(const MakeEmptyT&, const MakeEmptyT&) {
+  assert(false);
+  return false;
+}
+inline std::weak_ordering operator<=>(const MakeEmptyT&, const MakeEmptyT&) {
+  assert(false);
+  return std::weak_ordering::equivalent;
+}
+
+template <class Variant>
+void makeEmpty(Variant& v) {
+  Variant v2(std::in_place_type<MakeEmptyT>);
+  try {
+    v = std::move(v2);
+    assert(false);
+  } catch (...) {
+    assert(v.valueless_by_exception());
+  }
+}
+
+void test_empty() {
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    V v2;
+    makeEmpty(v2);
+    assert(testOrder(v1, v2, std::weak_ordering::greater));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    assert(testOrder(v1, v2, std::weak_ordering::less));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    makeEmpty(v2);
+    assert(testOrder(v1, v2, std::weak_ordering::equivalent));
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+template <class T1, class T2, class Order>
+constexpr bool test_with_types() {
+  using V = std::variant<T1, T2>;
+  AssertOrderReturn<Order, V>();
+  { // same index, same value
+    constexpr V v1(std::in_place_index<0>, T1{1});
+    constexpr V v2(std::in_place_index<0>, T1{1});
+    assert(testOrder(v1, v2, Order::equivalent));
+  }
+  { // same index, value < other_value
+    constexpr V v1(std::in_place_index<0>, T1{0});
+    constexpr V v2(std::in_place_index<0>, T1{1});
+    assert(testOrder(v1, v2, Order::less));
+  }
+  { // same index, value > other_value
+    constexpr V v1(std::in_place_index<0>, T1{1});
+    constexpr V v2(std::in_place_index<0>, T1{0});
+    assert(testOrder(v1, v2, Order::greater));
+  }
+  { // LHS.index() < RHS.index()
+    constexpr V v1(std::in_place_index<0>, T1{0});
+    constexpr V v2(std::in_place_index<1>, T2{0});
+    assert(testOrder(v1, v2, Order::less));
+  }
+  { // LHS.index() > RHS.index()
+    constexpr V v1(std::in_place_index<1>, T2{0});
+    constexpr V v2(std::in_place_index<0>, T1{0});
+    assert(testOrder(v1, v2, Order::greater));
+  }
+
+  return true;
+}
+
+constexpr bool test_three_way() {
+  assert((test_with_types<int, double, std::partial_ordering>()));
+  assert((test_with_types<int, long, std::strong_ordering>()));
+
+  {
+    using V              = std::variant<int, double>;
+    constexpr double nan = std::numeric_limits<double>::quiet_NaN();
+    {
+      constexpr V v1(std::in_place_type<int>, 1);
+      constexpr V v2(std::in_place_type<double>, nan);
+      assert(testOrder(v1, v2, std::partial_ordering::less));
+    }
+    {
+      constexpr V v1(std::in_place_type<double>, nan);
+      constexpr V v2(std::in_place_type<int>, 2);
+      assert(testOrder(v1, v2, std::partial_ordering::greater));
+    }
+    {
+      constexpr V v1(std::in_place_type<double>, nan);
+      constexpr V v2(std::in_place_type<double>, nan);
+      assert(testOrder(v1, v2, std::partial_ordering::unordered));
+    }
+  }
+
+  return true;
+}
+
+// SFINAE tests
+template <class T, class U = T>
+concept has_three_way_op = requires (T& t, U& u) { t <=> u; };
+
+// std::three_way_comparable is a more stringent requirement that demands
+// operator== and a few other things.
+using std::three_way_comparable;
+
+struct HasSimpleOrdering {
+  constexpr bool operator==(const HasSimpleOrdering&) const;
+  constexpr bool operator<(const HasSimpleOrdering&) const;
+};
+
+struct HasOnlySpaceship {
+  constexpr bool operator==(const HasOnlySpaceship&) const = delete;
+  constexpr std::weak_ordering operator<=>(const HasOnlySpaceship&) const;
+};
+
+struct HasFullOrdering {
+  constexpr bool operator==(const HasFullOrdering&) const;
+  constexpr std::weak_ordering operator<=>(const HasFullOrdering&) const;
+};
+
+// operator<=> must resolve the return types of all its union types'
+// operator<=>s to determine its own return type, so it is detectable by SFINAE
+static_assert(!has_three_way_op<HasSimpleOrdering>);
+static_assert(!has_three_way_op<std::variant<int, HasSimpleOrdering>>);
+
+static_assert(!three_way_comparable<HasSimpleOrdering>);
+static_assert(!three_way_comparable<std::variant<int, HasSimpleOrdering>>);
+
+static_assert(has_three_way_op<HasOnlySpaceship>);
+static_assert(!has_three_way_op<std::variant<int, HasOnlySpaceship>>);
+
+static_assert(!three_way_comparable<HasOnlySpaceship>);
+static_assert(!three_way_comparable<std::variant<int, HasOnlySpaceship>>);
+
+static_assert( has_three_way_op<HasFullOrdering>);
+static_assert( has_three_way_op<std::variant<int, HasFullOrdering>>);
+
+static_assert( three_way_comparable<HasFullOrdering>);
+static_assert( three_way_comparable<std::variant<int, HasFullOrdering>>);
+
+int main(int, char**) {
+  test_three_way();
+  static_assert(test_three_way());
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  test_empty();
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.synopsis/variant_npos.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.synopsis/variant_npos.pass.cpp
new file mode 100644
index 0000000..e9afc21
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.synopsis/variant_npos.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// constexpr size_t variant_npos = -1;
+
+#include <variant>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  static_assert(std::variant_npos == static_cast<std::size_t>(-1), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/implicit_ctad.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/implicit_ctad.pass.cpp
new file mode 100644
index 0000000..514c1f8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/implicit_ctad.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// Make sure that the implicitly-generated CTAD works.
+
+// We make sure that it is not ill-formed, however we still produce a warning for
+// this one because explicit construction from a variant using CTAD is ambiguous
+// (in the sense that the programer intent is not clear).
+// ADDITIONAL_COMPILE_FLAGS: -Wno-ctad-maybe-unsupported
+
+#include <variant>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  // This is the motivating example from P0739R0
+  {
+    std::variant<int, double> v1(3);
+    std::variant v2 = v1;
+    ASSERT_SAME_TYPE(decltype(v2), std::variant<int, double>);
+  }
+
+  {
+    std::variant<int, double> v1(3);
+    std::variant v2 = std::variant(v1); // Technically valid, but intent is ambiguous!
+    ASSERT_SAME_TYPE(decltype(v2), std::variant<int, double>);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/T.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/T.pass.cpp
new file mode 100644
index 0000000..bc52c9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/T.pass.cpp
@@ -0,0 +1,309 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class T>
+// variant& operator=(T&&) noexcept(see below);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+#include <memory>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+namespace MetaHelpers {
+
+struct Dummy {
+  Dummy() = default;
+};
+
+struct ThrowsCtorT {
+  ThrowsCtorT(int) noexcept(false) {}
+  ThrowsCtorT &operator=(int) noexcept { return *this; }
+};
+
+struct ThrowsAssignT {
+  ThrowsAssignT(int) noexcept {}
+  ThrowsAssignT &operator=(int) noexcept(false) { return *this; }
+};
+
+struct NoThrowT {
+  NoThrowT(int) noexcept {}
+  NoThrowT &operator=(int) noexcept { return *this; }
+};
+
+} // namespace MetaHelpers
+
+namespace RuntimeHelpers {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+struct ThrowsCtorT {
+  int value;
+  ThrowsCtorT() : value(0) {}
+  ThrowsCtorT(int) noexcept(false) { throw 42; }
+  ThrowsCtorT &operator=(int v) noexcept {
+    value = v;
+    return *this;
+  }
+};
+
+struct MoveCrashes {
+  int value;
+  MoveCrashes(int v = 0) noexcept : value{v} {}
+  MoveCrashes(MoveCrashes &&) noexcept { assert(false); }
+  MoveCrashes &operator=(MoveCrashes &&) noexcept { assert(false); return *this; }
+  MoveCrashes &operator=(int v) noexcept {
+    value = v;
+    return *this;
+  }
+};
+
+struct ThrowsCtorTandMove {
+  int value;
+  ThrowsCtorTandMove() : value(0) {}
+  ThrowsCtorTandMove(int) noexcept(false) { throw 42; }
+  ThrowsCtorTandMove(ThrowsCtorTandMove &&) noexcept(false) { assert(false); }
+  ThrowsCtorTandMove &operator=(int v) noexcept {
+    value = v;
+    return *this;
+  }
+};
+
+struct ThrowsAssignT {
+  int value;
+  ThrowsAssignT() : value(0) {}
+  ThrowsAssignT(int v) noexcept : value(v) {}
+  ThrowsAssignT &operator=(int) noexcept(false) { throw 42; }
+};
+
+struct NoThrowT {
+  int value;
+  NoThrowT() : value(0) {}
+  NoThrowT(int v) noexcept : value(v) {}
+  NoThrowT &operator=(int v) noexcept {
+    value = v;
+    return *this;
+  }
+};
+
+#endif // !defined(TEST_HAS_NO_EXCEPTIONS)
+} // namespace RuntimeHelpers
+
+void test_T_assignment_noexcept() {
+  using namespace MetaHelpers;
+  {
+    using V = std::variant<Dummy, NoThrowT>;
+    static_assert(std::is_nothrow_assignable<V, int>::value, "");
+  }
+  {
+    using V = std::variant<Dummy, ThrowsCtorT>;
+    static_assert(!std::is_nothrow_assignable<V, int>::value, "");
+  }
+  {
+    using V = std::variant<Dummy, ThrowsAssignT>;
+    static_assert(!std::is_nothrow_assignable<V, int>::value, "");
+  }
+}
+
+void test_T_assignment_sfinae() {
+  {
+    using V = std::variant<long, long long>;
+    static_assert(!std::is_assignable<V, int>::value, "ambiguous");
+  }
+  {
+    using V = std::variant<std::string, std::string>;
+    static_assert(!std::is_assignable<V, const char *>::value, "ambiguous");
+  }
+  {
+    using V = std::variant<std::string, void *>;
+    static_assert(!std::is_assignable<V, int>::value, "no matching operator=");
+  }
+  {
+    using V = std::variant<std::string, float>;
+    static_assert(std::is_assignable<V, int>::value == VariantAllowsNarrowingConversions,
+    "no matching operator=");
+  }
+  {
+    using V = std::variant<std::unique_ptr<int>, bool>;
+    static_assert(!std::is_assignable<V, std::unique_ptr<char>>::value,
+                  "no explicit bool in operator=");
+    struct X {
+      operator void*();
+    };
+    static_assert(!std::is_assignable<V, X>::value,
+                  "no boolean conversion in operator=");
+    static_assert(!std::is_assignable<V, std::false_type>::value,
+                  "no converted to bool in operator=");
+  }
+  {
+    struct X {};
+    struct Y {
+      operator X();
+    };
+    using V = std::variant<X>;
+    static_assert(std::is_assignable<V, Y>::value,
+                  "regression on user-defined conversions in operator=");
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int, int &&>;
+    static_assert(!std::is_assignable<V, int>::value, "ambiguous");
+  }
+  {
+    using V = std::variant<int, const int &>;
+    static_assert(!std::is_assignable<V, int>::value, "ambiguous");
+  }
+#endif // TEST_VARIANT_HAS_NO_REFERENCES
+}
+
+void test_T_assignment_basic() {
+  {
+    std::variant<int> v(43);
+    v = 42;
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == 42);
+  }
+  {
+    std::variant<int, long> v(43l);
+    v = 42;
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == 42);
+    v = 43l;
+    assert(v.index() == 1);
+    assert(std::get<1>(v) == 43);
+  }
+#ifndef TEST_VARIANT_ALLOWS_NARROWING_CONVERSIONS
+  {
+    std::variant<unsigned, long> v;
+    v = 42;
+    assert(v.index() == 1);
+    assert(std::get<1>(v) == 42);
+    v = 43u;
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == 43);
+  }
+#endif
+  {
+    std::variant<std::string, bool> v = true;
+    v = "bar";
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == "bar");
+  }
+  {
+    std::variant<bool, std::unique_ptr<int>> v;
+    v = nullptr;
+    assert(v.index() == 1);
+    assert(std::get<1>(v) == nullptr);
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &, int &&, long>;
+    int x = 42;
+    V v(43l);
+    v = x;
+    assert(v.index() == 0);
+    assert(&std::get<0>(v) == &x);
+    v = std::move(x);
+    assert(v.index() == 1);
+    assert(&std::get<1>(v) == &x);
+    // 'long' is selected by FUN(const int &) since 'const int &' cannot bind
+    // to 'int&'.
+    const int &cx = x;
+    v = cx;
+    assert(v.index() == 2);
+    assert(std::get<2>(v) == 42);
+  }
+#endif // TEST_VARIANT_HAS_NO_REFERENCES
+}
+
+void test_T_assignment_performs_construction() {
+  using namespace RuntimeHelpers;
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<std::string, ThrowsCtorT>;
+    V v(std::in_place_type<std::string>, "hello");
+    try {
+      v = 42;
+      assert(false);
+    } catch (...) { /* ... */
+    }
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == "hello");
+  }
+  {
+    using V = std::variant<ThrowsAssignT, std::string>;
+    V v(std::in_place_type<std::string>, "hello");
+    v = 42;
+    assert(v.index() == 0);
+    assert(std::get<0>(v).value == 42);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+void test_T_assignment_performs_assignment() {
+  using namespace RuntimeHelpers;
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<ThrowsCtorT>;
+    V v;
+    v = 42;
+    assert(v.index() == 0);
+    assert(std::get<0>(v).value == 42);
+  }
+  {
+    using V = std::variant<ThrowsCtorT, std::string>;
+    V v;
+    v = 42;
+    assert(v.index() == 0);
+    assert(std::get<0>(v).value == 42);
+  }
+  {
+    using V = std::variant<ThrowsAssignT>;
+    V v(100);
+    try {
+      v = 42;
+      assert(false);
+    } catch (...) { /* ... */
+    }
+    assert(v.index() == 0);
+    assert(std::get<0>(v).value == 100);
+  }
+  {
+    using V = std::variant<std::string, ThrowsAssignT>;
+    V v(100);
+    try {
+      v = 42;
+      assert(false);
+    } catch (...) { /* ... */
+    }
+    assert(v.index() == 1);
+    assert(std::get<1>(v).value == 100);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+int main(int, char**) {
+  test_T_assignment_basic();
+  test_T_assignment_performs_construction();
+  test_T_assignment_performs_assignment();
+  test_T_assignment_noexcept();
+  test_T_assignment_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/conv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/conv.pass.cpp
new file mode 100644
index 0000000..5c1bf2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/conv.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class T>
+// variant& operator=(T&&) noexcept(see below);
+
+#include <variant>
+#include <string>
+#include <memory>
+
+#include "variant_test_helpers.h"
+
+int main(int, char**)
+{
+  static_assert(!std::is_assignable<std::variant<int, int>, int>::value, "");
+  static_assert(!std::is_assignable<std::variant<long, long long>, int>::value, "");
+  static_assert(std::is_assignable<std::variant<char>, int>::value == VariantAllowsNarrowingConversions, "");
+
+  static_assert(std::is_assignable<std::variant<std::string, float>, int>::value == VariantAllowsNarrowingConversions, "");
+  static_assert(std::is_assignable<std::variant<std::string, double>, int>::value == VariantAllowsNarrowingConversions, "");
+  static_assert(!std::is_assignable<std::variant<std::string, bool>, int>::value, "");
+
+  static_assert(!std::is_assignable<std::variant<int, bool>, decltype("meow")>::value, "");
+  static_assert(!std::is_assignable<std::variant<int, const bool>, decltype("meow")>::value, "");
+  static_assert(!std::is_assignable<std::variant<int, const volatile bool>, decltype("meow")>::value, "");
+
+  static_assert(!std::is_assignable<std::variant<bool>, std::true_type>::value, "");
+  static_assert(!std::is_assignable<std::variant<bool>, std::unique_ptr<char> >::value, "");
+  static_assert(!std::is_assignable<std::variant<bool>, decltype(nullptr)>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/copy.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/copy.fail.cpp
new file mode 100644
index 0000000..fe4961b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/copy.fail.cpp
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// LWG issue 3024
+
+#include <variant>
+#include <type_traits>
+
+struct NotCopyConstructible
+{
+    NotCopyConstructible() = default;
+    NotCopyConstructible(NotCopyConstructible const&) = delete;
+};
+
+int main(int, char**)
+{
+    static_assert(!std::is_copy_constructible_v<NotCopyConstructible>);
+
+    std::variant<NotCopyConstructible> v;
+    std::variant<NotCopyConstructible> v1;
+    std::variant<NotCopyConstructible> v2(v); // expected-error {{call to implicitly-deleted copy constructor of 'std::variant<NotCopyConstructible>'}}
+    v1 = v; // expected-error-re {{object of type 'std:{{.*}}:variant<NotCopyConstructible>' cannot be assigned because its copy assignment operator is implicitly deleted}}
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/copy.pass.cpp
new file mode 100644
index 0000000..46ccd44
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/copy.pass.cpp
@@ -0,0 +1,586 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr variant& operator=(variant const&);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+
+struct NoCopy {
+  NoCopy(const NoCopy &) = delete;
+  NoCopy &operator=(const NoCopy &) = default;
+};
+
+struct CopyOnly {
+  CopyOnly(const CopyOnly &) = default;
+  CopyOnly(CopyOnly &&) = delete;
+  CopyOnly &operator=(const CopyOnly &) = default;
+  CopyOnly &operator=(CopyOnly &&) = delete;
+};
+
+struct MoveOnly {
+  MoveOnly(const MoveOnly &) = delete;
+  MoveOnly(MoveOnly &&) = default;
+  MoveOnly &operator=(const MoveOnly &) = default;
+};
+
+struct MoveOnlyNT {
+  MoveOnlyNT(const MoveOnlyNT &) = delete;
+  MoveOnlyNT(MoveOnlyNT &&) {}
+  MoveOnlyNT &operator=(const MoveOnlyNT &) = default;
+};
+
+struct CopyAssign {
+  static int alive;
+  static int copy_construct;
+  static int copy_assign;
+  static int move_construct;
+  static int move_assign;
+  static void reset() {
+    copy_construct = copy_assign = move_construct = move_assign = alive = 0;
+  }
+  CopyAssign(int v) : value(v) { ++alive; }
+  CopyAssign(const CopyAssign &o) : value(o.value) {
+    ++alive;
+    ++copy_construct;
+  }
+  CopyAssign(CopyAssign &&o) noexcept : value(o.value) {
+    o.value = -1;
+    ++alive;
+    ++move_construct;
+  }
+  CopyAssign &operator=(const CopyAssign &o) {
+    value = o.value;
+    ++copy_assign;
+    return *this;
+  }
+  CopyAssign &operator=(CopyAssign &&o) noexcept {
+    value = o.value;
+    o.value = -1;
+    ++move_assign;
+    return *this;
+  }
+  ~CopyAssign() { --alive; }
+  int value;
+};
+
+int CopyAssign::alive = 0;
+int CopyAssign::copy_construct = 0;
+int CopyAssign::copy_assign = 0;
+int CopyAssign::move_construct = 0;
+int CopyAssign::move_assign = 0;
+
+struct CopyMaybeThrows {
+  CopyMaybeThrows(const CopyMaybeThrows &);
+  CopyMaybeThrows &operator=(const CopyMaybeThrows &);
+};
+struct CopyDoesThrow {
+  CopyDoesThrow(const CopyDoesThrow &) noexcept(false);
+  CopyDoesThrow &operator=(const CopyDoesThrow &) noexcept(false);
+};
+
+
+struct NTCopyAssign {
+  constexpr NTCopyAssign(int v) : value(v) {}
+  NTCopyAssign(const NTCopyAssign &) = default;
+  NTCopyAssign(NTCopyAssign &&) = default;
+  NTCopyAssign &operator=(const NTCopyAssign &that) {
+    value = that.value;
+    return *this;
+  };
+  NTCopyAssign &operator=(NTCopyAssign &&) = delete;
+  int value;
+};
+
+static_assert(!std::is_trivially_copy_assignable<NTCopyAssign>::value, "");
+static_assert(std::is_copy_assignable<NTCopyAssign>::value, "");
+
+struct TCopyAssign {
+  constexpr TCopyAssign(int v) : value(v) {}
+  TCopyAssign(const TCopyAssign &) = default;
+  TCopyAssign(TCopyAssign &&) = default;
+  TCopyAssign &operator=(const TCopyAssign &) = default;
+  TCopyAssign &operator=(TCopyAssign &&) = delete;
+  int value;
+};
+
+static_assert(std::is_trivially_copy_assignable<TCopyAssign>::value, "");
+
+struct TCopyAssignNTMoveAssign {
+  constexpr TCopyAssignNTMoveAssign(int v) : value(v) {}
+  TCopyAssignNTMoveAssign(const TCopyAssignNTMoveAssign &) = default;
+  TCopyAssignNTMoveAssign(TCopyAssignNTMoveAssign &&) = default;
+  TCopyAssignNTMoveAssign &operator=(const TCopyAssignNTMoveAssign &) = default;
+  TCopyAssignNTMoveAssign &operator=(TCopyAssignNTMoveAssign &&that) {
+    value = that.value;
+    that.value = -1;
+    return *this;
+  }
+  int value;
+};
+
+static_assert(std::is_trivially_copy_assignable_v<TCopyAssignNTMoveAssign>, "");
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct CopyThrows {
+  CopyThrows() = default;
+  CopyThrows(const CopyThrows &) { throw 42; }
+  CopyThrows &operator=(const CopyThrows &) { throw 42; }
+};
+
+struct CopyCannotThrow {
+  static int alive;
+  CopyCannotThrow() { ++alive; }
+  CopyCannotThrow(const CopyCannotThrow &) noexcept { ++alive; }
+  CopyCannotThrow(CopyCannotThrow &&) noexcept { assert(false); }
+  CopyCannotThrow &operator=(const CopyCannotThrow &) noexcept = default;
+  CopyCannotThrow &operator=(CopyCannotThrow &&) noexcept { assert(false); return *this; }
+};
+
+int CopyCannotThrow::alive = 0;
+
+struct MoveThrows {
+  static int alive;
+  MoveThrows() { ++alive; }
+  MoveThrows(const MoveThrows &) { ++alive; }
+  MoveThrows(MoveThrows &&) { throw 42; }
+  MoveThrows &operator=(const MoveThrows &) { return *this; }
+  MoveThrows &operator=(MoveThrows &&) { throw 42; }
+  ~MoveThrows() { --alive; }
+};
+
+int MoveThrows::alive = 0;
+
+struct MakeEmptyT {
+  static int alive;
+  MakeEmptyT() { ++alive; }
+  MakeEmptyT(const MakeEmptyT &) {
+    ++alive;
+    // Don't throw from the copy constructor since variant's assignment
+    // operator performs a copy before committing to the assignment.
+  }
+  MakeEmptyT(MakeEmptyT &&) { throw 42; }
+  MakeEmptyT &operator=(const MakeEmptyT &) { throw 42; }
+  MakeEmptyT &operator=(MakeEmptyT &&) { throw 42; }
+  ~MakeEmptyT() { --alive; }
+};
+
+int MakeEmptyT::alive = 0;
+
+template <class Variant> void makeEmpty(Variant &v) {
+  Variant v2(std::in_place_type<MakeEmptyT>);
+  try {
+    v = std::move(v2);
+    assert(false);
+  } catch (...) {
+    assert(v.valueless_by_exception());
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+void test_copy_assignment_not_noexcept() {
+  {
+    using V = std::variant<CopyMaybeThrows>;
+    static_assert(!std::is_nothrow_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, CopyDoesThrow>;
+    static_assert(!std::is_nothrow_copy_assignable<V>::value, "");
+  }
+}
+
+void test_copy_assignment_sfinae() {
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, CopyOnly>;
+    static_assert(std::is_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NoCopy>;
+    static_assert(!std::is_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnly>;
+    static_assert(!std::is_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnlyNT>;
+    static_assert(!std::is_copy_assignable<V>::value, "");
+  }
+
+  // Make sure we properly propagate triviality (see P0602R4).
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_trivially_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NTCopyAssign>;
+    static_assert(!std::is_trivially_copy_assignable<V>::value, "");
+    static_assert(std::is_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TCopyAssign>;
+    static_assert(std::is_trivially_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TCopyAssignNTMoveAssign>;
+    static_assert(std::is_trivially_copy_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, CopyOnly>;
+    static_assert(std::is_trivially_copy_assignable<V>::value, "");
+  }
+}
+
+void test_copy_assignment_empty_empty() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, long, MET>;
+    V v1(std::in_place_index<0>);
+    makeEmpty(v1);
+    V v2(std::in_place_index<0>);
+    makeEmpty(v2);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+void test_copy_assignment_non_empty_empty() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET>;
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>);
+    makeEmpty(v2);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_index<2>, "hello");
+    V v2(std::in_place_index<0>);
+    makeEmpty(v2);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+void test_copy_assignment_empty_non_empty() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET>;
+    V v1(std::in_place_index<0>);
+    makeEmpty(v1);
+    V v2(std::in_place_index<0>, 42);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 0);
+    assert(std::get<0>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_index<0>);
+    makeEmpty(v1);
+    V v2(std::in_place_type<std::string>, "hello");
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 2);
+    assert(std::get<2>(v1) == "hello");
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+template <typename T> struct Result { size_t index; T value; };
+
+void test_copy_assignment_same_index() {
+  {
+    using V = std::variant<int>;
+    V v1(43);
+    V v2(42);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 0);
+    assert(std::get<0>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, long, unsigned>;
+    V v1(43l);
+    V v2(42l);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, CopyAssign, unsigned>;
+    V v1(std::in_place_type<CopyAssign>, 43);
+    V v2(std::in_place_type<CopyAssign>, 42);
+    CopyAssign::reset();
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1).value == 42);
+    assert(CopyAssign::copy_construct == 0);
+    assert(CopyAssign::move_construct == 0);
+    assert(CopyAssign::copy_assign == 1);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_type<MET>);
+    MET &mref = std::get<1>(v1);
+    V v2(std::in_place_type<MET>);
+    try {
+      v1 = v2;
+      assert(false);
+    } catch (...) {
+    }
+    assert(v1.index() == 1);
+    assert(&std::get<1>(v1) == &mref);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        using V = std::variant<int>;
+        V v(43);
+        V v2(42);
+        v = v2;
+        return {v.index(), std::get<0>(v)};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 0, "");
+    static_assert(result.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<long> operator()() const {
+        using V = std::variant<int, long, unsigned>;
+        V v(43l);
+        V v2(42l);
+        v = v2;
+        return {v.index(), std::get<1>(v)};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42l, "");
+  }
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        using V = std::variant<int, TCopyAssign, unsigned>;
+        V v(std::in_place_type<TCopyAssign>, 43);
+        V v2(std::in_place_type<TCopyAssign>, 42);
+        v = v2;
+        return {v.index(), std::get<1>(v).value};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        using V = std::variant<int, TCopyAssignNTMoveAssign, unsigned>;
+        V v(std::in_place_type<TCopyAssignNTMoveAssign>, 43);
+        V v2(std::in_place_type<TCopyAssignNTMoveAssign>, 42);
+        v = v2;
+        return {v.index(), std::get<1>(v).value};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42, "");
+  }
+}
+
+void test_copy_assignment_different_index() {
+  {
+    using V = std::variant<int, long, unsigned>;
+    V v1(43);
+    V v2(42l);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, CopyAssign, unsigned>;
+    CopyAssign::reset();
+    V v1(std::in_place_type<unsigned>, 43u);
+    V v2(std::in_place_type<CopyAssign>, 42);
+    assert(CopyAssign::copy_construct == 0);
+    assert(CopyAssign::move_construct == 0);
+    assert(CopyAssign::alive == 1);
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1).value == 42);
+    assert(CopyAssign::alive == 2);
+    assert(CopyAssign::copy_construct == 1);
+    assert(CopyAssign::move_construct == 1);
+    assert(CopyAssign::copy_assign == 0);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<int, CopyThrows, std::string>;
+    V v1(std::in_place_type<std::string>, "hello");
+    V v2(std::in_place_type<CopyThrows>);
+    try {
+      v1 = v2;
+      assert(false);
+    } catch (...) { /* ... */
+    }
+    // Test that copy construction is used directly if move construction may throw,
+    // resulting in a valueless variant if copy throws.
+    assert(v1.valueless_by_exception());
+  }
+  {
+    using V = std::variant<int, MoveThrows, std::string>;
+    V v1(std::in_place_type<std::string>, "hello");
+    V v2(std::in_place_type<MoveThrows>);
+    assert(MoveThrows::alive == 1);
+    // Test that copy construction is used directly if move construction may throw.
+    v1 = v2;
+    assert(v1.index() == 1);
+    assert(v2.index() == 1);
+    assert(MoveThrows::alive == 2);
+  }
+  {
+    // Test that direct copy construction is preferred when it cannot throw.
+    using V = std::variant<int, CopyCannotThrow, std::string>;
+    V v1(std::in_place_type<std::string>, "hello");
+    V v2(std::in_place_type<CopyCannotThrow>);
+    assert(CopyCannotThrow::alive == 1);
+    v1 = v2;
+    assert(v1.index() == 1);
+    assert(v2.index() == 1);
+    assert(CopyCannotThrow::alive == 2);
+  }
+  {
+    using V = std::variant<int, CopyThrows, std::string>;
+    V v1(std::in_place_type<CopyThrows>);
+    V v2(std::in_place_type<std::string>, "hello");
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 2);
+    assert(std::get<2>(v1) == "hello");
+    assert(v2.index() == 2);
+    assert(std::get<2>(v2) == "hello");
+  }
+  {
+    using V = std::variant<int, MoveThrows, std::string>;
+    V v1(std::in_place_type<MoveThrows>);
+    V v2(std::in_place_type<std::string>, "hello");
+    V &vref = (v1 = v2);
+    assert(&vref == &v1);
+    assert(v1.index() == 2);
+    assert(std::get<2>(v1) == "hello");
+    assert(v2.index() == 2);
+    assert(std::get<2>(v2) == "hello");
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  {
+    struct {
+      constexpr Result<long> operator()() const {
+        using V = std::variant<int, long, unsigned>;
+        V v(43);
+        V v2(42l);
+        v = v2;
+        return {v.index(), std::get<1>(v)};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42l, "");
+  }
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        using V = std::variant<int, TCopyAssign, unsigned>;
+        V v(std::in_place_type<unsigned>, 43u);
+        V v2(std::in_place_type<TCopyAssign>, 42);
+        v = v2;
+        return {v.index(), std::get<1>(v).value};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42, "");
+  }
+}
+
+template <size_t NewIdx, class ValueType>
+constexpr bool test_constexpr_assign_imp(
+    std::variant<long, void*, int>&& v, ValueType&& new_value)
+{
+  const std::variant<long, void*, int> cp(
+      std::forward<ValueType>(new_value));
+  v = cp;
+  return v.index() == NewIdx &&
+        std::get<NewIdx>(v) == std::get<NewIdx>(cp);
+}
+
+void test_constexpr_copy_assignment() {
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  using V = std::variant<long, void*, int>;
+  static_assert(std::is_trivially_copyable<V>::value, "");
+  static_assert(std::is_trivially_copy_assignable<V>::value, "");
+  static_assert(test_constexpr_assign_imp<0>(V(42l), 101l), "");
+  static_assert(test_constexpr_assign_imp<0>(V(nullptr), 101l), "");
+  static_assert(test_constexpr_assign_imp<1>(V(42l), nullptr), "");
+  static_assert(test_constexpr_assign_imp<2>(V(42l), 101), "");
+}
+
+int main(int, char**) {
+  test_copy_assignment_empty_empty();
+  test_copy_assignment_non_empty_empty();
+  test_copy_assignment_empty_non_empty();
+  test_copy_assignment_same_index();
+  test_copy_assignment_different_index();
+  test_copy_assignment_sfinae();
+  test_copy_assignment_not_noexcept();
+  test_constexpr_copy_assignment();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/move.pass.cpp
new file mode 100644
index 0000000..775330f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.assign/move.pass.cpp
@@ -0,0 +1,501 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr variant& operator=(variant&&) noexcept(see below);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+struct NoCopy {
+  NoCopy(const NoCopy &) = delete;
+  NoCopy &operator=(const NoCopy &) = default;
+};
+
+struct CopyOnly {
+  CopyOnly(const CopyOnly &) = default;
+  CopyOnly(CopyOnly &&) = delete;
+  CopyOnly &operator=(const CopyOnly &) = default;
+  CopyOnly &operator=(CopyOnly &&) = delete;
+};
+
+struct MoveOnly {
+  MoveOnly(const MoveOnly &) = delete;
+  MoveOnly(MoveOnly &&) = default;
+  MoveOnly &operator=(const MoveOnly &) = delete;
+  MoveOnly &operator=(MoveOnly &&) = default;
+};
+
+struct MoveOnlyNT {
+  MoveOnlyNT(const MoveOnlyNT &) = delete;
+  MoveOnlyNT(MoveOnlyNT &&) {}
+  MoveOnlyNT &operator=(const MoveOnlyNT &) = delete;
+  MoveOnlyNT &operator=(MoveOnlyNT &&) = default;
+};
+
+struct MoveOnlyOddNothrow {
+  MoveOnlyOddNothrow(MoveOnlyOddNothrow &&) noexcept(false) {}
+  MoveOnlyOddNothrow(const MoveOnlyOddNothrow &) = delete;
+  MoveOnlyOddNothrow &operator=(MoveOnlyOddNothrow &&) noexcept = default;
+  MoveOnlyOddNothrow &operator=(const MoveOnlyOddNothrow &) = delete;
+};
+
+struct MoveAssignOnly {
+  MoveAssignOnly(MoveAssignOnly &&) = delete;
+  MoveAssignOnly &operator=(MoveAssignOnly &&) = default;
+};
+
+struct MoveAssign {
+  static int move_construct;
+  static int move_assign;
+  static void reset() { move_construct = move_assign = 0; }
+  MoveAssign(int v) : value(v) {}
+  MoveAssign(MoveAssign &&o) : value(o.value) {
+    ++move_construct;
+    o.value = -1;
+  }
+  MoveAssign &operator=(MoveAssign &&o) {
+    value = o.value;
+    ++move_assign;
+    o.value = -1;
+    return *this;
+  }
+  int value;
+};
+
+int MoveAssign::move_construct = 0;
+int MoveAssign::move_assign = 0;
+
+struct NTMoveAssign {
+  constexpr NTMoveAssign(int v) : value(v) {}
+  NTMoveAssign(const NTMoveAssign &) = default;
+  NTMoveAssign(NTMoveAssign &&) = default;
+  NTMoveAssign &operator=(const NTMoveAssign &that) = default;
+  NTMoveAssign &operator=(NTMoveAssign &&that) {
+    value = that.value;
+    that.value = -1;
+    return *this;
+  };
+  int value;
+};
+
+static_assert(!std::is_trivially_move_assignable<NTMoveAssign>::value, "");
+static_assert(std::is_move_assignable<NTMoveAssign>::value, "");
+
+struct TMoveAssign {
+  constexpr TMoveAssign(int v) : value(v) {}
+  TMoveAssign(const TMoveAssign &) = delete;
+  TMoveAssign(TMoveAssign &&) = default;
+  TMoveAssign &operator=(const TMoveAssign &) = delete;
+  TMoveAssign &operator=(TMoveAssign &&) = default;
+  int value;
+};
+
+static_assert(std::is_trivially_move_assignable<TMoveAssign>::value, "");
+
+struct TMoveAssignNTCopyAssign {
+  constexpr TMoveAssignNTCopyAssign(int v) : value(v) {}
+  TMoveAssignNTCopyAssign(const TMoveAssignNTCopyAssign &) = default;
+  TMoveAssignNTCopyAssign(TMoveAssignNTCopyAssign &&) = default;
+  TMoveAssignNTCopyAssign &operator=(const TMoveAssignNTCopyAssign &that) {
+    value = that.value;
+    return *this;
+  }
+  TMoveAssignNTCopyAssign &operator=(TMoveAssignNTCopyAssign &&) = default;
+  int value;
+};
+
+static_assert(std::is_trivially_move_assignable_v<TMoveAssignNTCopyAssign>, "");
+
+struct TrivialCopyNontrivialMove {
+  TrivialCopyNontrivialMove(TrivialCopyNontrivialMove const&) = default;
+  TrivialCopyNontrivialMove(TrivialCopyNontrivialMove&&) noexcept {}
+  TrivialCopyNontrivialMove& operator=(TrivialCopyNontrivialMove const&) = default;
+  TrivialCopyNontrivialMove& operator=(TrivialCopyNontrivialMove&&) noexcept {
+    return *this;
+  }
+};
+
+static_assert(std::is_trivially_copy_assignable_v<TrivialCopyNontrivialMove>, "");
+static_assert(!std::is_trivially_move_assignable_v<TrivialCopyNontrivialMove>, "");
+
+
+void test_move_assignment_noexcept() {
+  {
+    using V = std::variant<int>;
+    static_assert(std::is_nothrow_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<MoveOnly>;
+    static_assert(std::is_nothrow_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_nothrow_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnly>;
+    static_assert(std::is_nothrow_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<MoveOnlyNT>;
+    static_assert(!std::is_nothrow_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<MoveOnlyOddNothrow>;
+    static_assert(!std::is_nothrow_move_assignable<V>::value, "");
+  }
+}
+
+void test_move_assignment_sfinae() {
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, CopyOnly>;
+    static_assert(std::is_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NoCopy>;
+    static_assert(!std::is_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnly>;
+    static_assert(std::is_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnlyNT>;
+    static_assert(std::is_move_assignable<V>::value, "");
+  }
+  {
+    // variant only provides move assignment when the types also provide
+    // a move constructor.
+    using V = std::variant<int, MoveAssignOnly>;
+    static_assert(!std::is_move_assignable<V>::value, "");
+  }
+
+  // Make sure we properly propagate triviality (see P0602R4).
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_trivially_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NTMoveAssign>;
+    static_assert(!std::is_trivially_move_assignable<V>::value, "");
+    static_assert(std::is_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TMoveAssign>;
+    static_assert(std::is_trivially_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TMoveAssignNTCopyAssign>;
+    static_assert(std::is_trivially_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TrivialCopyNontrivialMove>;
+    static_assert(!std::is_trivially_move_assignable<V>::value, "");
+  }
+  {
+    using V = std::variant<int, CopyOnly>;
+    static_assert(std::is_trivially_move_assignable<V>::value, "");
+  }
+}
+
+void test_move_assignment_empty_empty() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, long, MET>;
+    V v1(std::in_place_index<0>);
+    makeEmpty(v1);
+    V v2(std::in_place_index<0>);
+    makeEmpty(v2);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+void test_move_assignment_non_empty_empty() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET>;
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>);
+    makeEmpty(v2);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_index<2>, "hello");
+    V v2(std::in_place_index<0>);
+    makeEmpty(v2);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+void test_move_assignment_empty_non_empty() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET>;
+    V v1(std::in_place_index<0>);
+    makeEmpty(v1);
+    V v2(std::in_place_index<0>, 42);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 0);
+    assert(std::get<0>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_index<0>);
+    makeEmpty(v1);
+    V v2(std::in_place_type<std::string>, "hello");
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 2);
+    assert(std::get<2>(v1) == "hello");
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+template <typename T> struct Result { size_t index; T value; };
+
+void test_move_assignment_same_index() {
+  {
+    using V = std::variant<int>;
+    V v1(43);
+    V v2(42);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 0);
+    assert(std::get<0>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, long, unsigned>;
+    V v1(43l);
+    V v2(42l);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, MoveAssign, unsigned>;
+    V v1(std::in_place_type<MoveAssign>, 43);
+    V v2(std::in_place_type<MoveAssign>, 42);
+    MoveAssign::reset();
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1).value == 42);
+    assert(MoveAssign::move_construct == 0);
+    assert(MoveAssign::move_assign == 1);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_type<MET>);
+    MET &mref = std::get<1>(v1);
+    V v2(std::in_place_type<MET>);
+    try {
+      v1 = std::move(v2);
+      assert(false);
+    } catch (...) {
+    }
+    assert(v1.index() == 1);
+    assert(&std::get<1>(v1) == &mref);
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        using V = std::variant<int>;
+        V v(43);
+        V v2(42);
+        v = std::move(v2);
+        return {v.index(), std::get<0>(v)};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 0, "");
+    static_assert(result.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<long> operator()() const {
+        using V = std::variant<int, long, unsigned>;
+        V v(43l);
+        V v2(42l);
+        v = std::move(v2);
+        return {v.index(), std::get<1>(v)};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42l, "");
+  }
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        using V = std::variant<int, TMoveAssign, unsigned>;
+        V v(std::in_place_type<TMoveAssign>, 43);
+        V v2(std::in_place_type<TMoveAssign>, 42);
+        v = std::move(v2);
+        return {v.index(), std::get<1>(v).value};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42, "");
+  }
+}
+
+void test_move_assignment_different_index() {
+  {
+    using V = std::variant<int, long, unsigned>;
+    V v1(43);
+    V v2(42l);
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1) == 42);
+  }
+  {
+    using V = std::variant<int, MoveAssign, unsigned>;
+    V v1(std::in_place_type<unsigned>, 43u);
+    V v2(std::in_place_type<MoveAssign>, 42);
+    MoveAssign::reset();
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 1);
+    assert(std::get<1>(v1).value == 42);
+    assert(MoveAssign::move_construct == 1);
+    assert(MoveAssign::move_assign == 0);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using MET = MakeEmptyT;
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_type<int>);
+    V v2(std::in_place_type<MET>);
+    try {
+      v1 = std::move(v2);
+      assert(false);
+    } catch (...) {
+    }
+    assert(v1.valueless_by_exception());
+    assert(v1.index() == std::variant_npos);
+  }
+  {
+    using V = std::variant<int, MET, std::string>;
+    V v1(std::in_place_type<MET>);
+    V v2(std::in_place_type<std::string>, "hello");
+    V &vref = (v1 = std::move(v2));
+    assert(&vref == &v1);
+    assert(v1.index() == 2);
+    assert(std::get<2>(v1) == "hello");
+  }
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  {
+    struct {
+      constexpr Result<long> operator()() const {
+        using V = std::variant<int, long, unsigned>;
+        V v(43);
+        V v2(42l);
+        v = std::move(v2);
+        return {v.index(), std::get<1>(v)};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42l, "");
+  }
+  {
+    struct {
+      constexpr Result<long> operator()() const {
+        using V = std::variant<int, TMoveAssign, unsigned>;
+        V v(std::in_place_type<unsigned>, 43u);
+        V v2(std::in_place_type<TMoveAssign>, 42);
+        v = std::move(v2);
+        return {v.index(), std::get<1>(v).value};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42, "");
+  }
+}
+
+template <size_t NewIdx, class ValueType>
+constexpr bool test_constexpr_assign_imp(
+    std::variant<long, void*, int>&& v, ValueType&& new_value)
+{
+  std::variant<long, void*, int> v2(
+      std::forward<ValueType>(new_value));
+  const auto cp = v2;
+  v = std::move(v2);
+  return v.index() == NewIdx &&
+        std::get<NewIdx>(v) == std::get<NewIdx>(cp);
+}
+
+void test_constexpr_move_assignment() {
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  using V = std::variant<long, void*, int>;
+  static_assert(std::is_trivially_copyable<V>::value, "");
+  static_assert(std::is_trivially_move_assignable<V>::value, "");
+  static_assert(test_constexpr_assign_imp<0>(V(42l), 101l), "");
+  static_assert(test_constexpr_assign_imp<0>(V(nullptr), 101l), "");
+  static_assert(test_constexpr_assign_imp<1>(V(42l), nullptr), "");
+  static_assert(test_constexpr_assign_imp<2>(V(42l), 101), "");
+}
+
+int main(int, char**) {
+  test_move_assignment_empty_empty();
+  test_move_assignment_non_empty_empty();
+  test_move_assignment_empty_non_empty();
+  test_move_assignment_same_index();
+  test_move_assignment_different_index();
+  test_move_assignment_sfinae();
+  test_move_assignment_noexcept();
+  test_constexpr_move_assignment();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp
new file mode 100644
index 0000000..015c64c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/T.pass.cpp
@@ -0,0 +1,211 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class T> constexpr variant(T&&) noexcept(see below);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+#include <memory>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+struct Dummy {
+  Dummy() = default;
+};
+
+struct ThrowsT {
+  ThrowsT(int) noexcept(false) {}
+};
+
+struct NoThrowT {
+  NoThrowT(int) noexcept(true) {}
+};
+
+struct AnyConstructible { template <typename T> AnyConstructible(T&&) {} };
+struct NoConstructible { NoConstructible() = delete; };
+template <class T>
+struct RValueConvertibleFrom { RValueConvertibleFrom(T&&) {} };
+
+void test_T_ctor_noexcept() {
+  {
+    using V = std::variant<Dummy, NoThrowT>;
+    static_assert(std::is_nothrow_constructible<V, int>::value, "");
+  }
+  {
+    using V = std::variant<Dummy, ThrowsT>;
+    static_assert(!std::is_nothrow_constructible<V, int>::value, "");
+  }
+}
+
+void test_T_ctor_sfinae() {
+  {
+    using V = std::variant<long, long long>;
+    static_assert(!std::is_constructible<V, int>::value, "ambiguous");
+  }
+  {
+    using V = std::variant<std::string, std::string>;
+    static_assert(!std::is_constructible<V, const char *>::value, "ambiguous");
+  }
+  {
+    using V = std::variant<std::string, void *>;
+    static_assert(!std::is_constructible<V, int>::value,
+                  "no matching constructor");
+  }
+  {
+    using V = std::variant<std::string, float>;
+    static_assert(std::is_constructible<V, int>::value == VariantAllowsNarrowingConversions,
+                  "no matching constructor");
+  }
+  {
+    using V = std::variant<std::unique_ptr<int>, bool>;
+    static_assert(!std::is_constructible<V, std::unique_ptr<char>>::value,
+                  "no explicit bool in constructor");
+    struct X {
+      operator void*();
+    };
+    static_assert(!std::is_constructible<V, X>::value,
+                  "no boolean conversion in constructor");
+    static_assert(!std::is_constructible<V, std::false_type>::value,
+                  "no converted to bool in constructor");
+  }
+  {
+    struct X {};
+    struct Y {
+      operator X();
+    };
+    using V = std::variant<X>;
+    static_assert(std::is_constructible<V, Y>::value,
+                  "regression on user-defined conversions in constructor");
+  }
+  {
+    using V = std::variant<AnyConstructible, NoConstructible>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_type_t<NoConstructible>>::value,
+        "no matching constructor");
+    static_assert(!std::is_constructible<V, std::in_place_index_t<1>>::value,
+                  "no matching constructor");
+  }
+
+
+
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int, int &&>;
+    static_assert(!std::is_constructible<V, int>::value, "ambiguous");
+  }
+  {
+    using V = std::variant<int, const int &>;
+    static_assert(!std::is_constructible<V, int>::value, "ambiguous");
+  }
+#endif
+}
+
+void test_T_ctor_basic() {
+  {
+    constexpr std::variant<int> v(42);
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v) == 42, "");
+  }
+  {
+    constexpr std::variant<int, long> v(42l);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v) == 42, "");
+  }
+#ifndef TEST_VARIANT_ALLOWS_NARROWING_CONVERSIONS
+  {
+    constexpr std::variant<unsigned, long> v(42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v) == 42, "");
+  }
+#endif
+  {
+    std::variant<std::string, bool const> v = "foo";
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == "foo");
+  }
+  {
+    std::variant<bool volatile, std::unique_ptr<int>> v = nullptr;
+    assert(v.index() == 1);
+    assert(std::get<1>(v) == nullptr);
+  }
+  {
+    std::variant<bool volatile const, int> v = true;
+    assert(v.index() == 0);
+    assert(std::get<0>(v));
+  }
+  {
+    std::variant<RValueConvertibleFrom<int>> v1 = 42;
+    assert(v1.index() == 0);
+
+    int x = 42;
+    std::variant<RValueConvertibleFrom<int>, AnyConstructible> v2 = x;
+    assert(v2.index() == 1);
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<const int &, int &&, long>;
+    static_assert(std::is_convertible<int &, V>::value, "must be implicit");
+    int x = 42;
+    V v(x);
+    assert(v.index() == 0);
+    assert(&std::get<0>(v) == &x);
+  }
+  {
+    using V = std::variant<const int &, int &&, long>;
+    static_assert(std::is_convertible<int, V>::value, "must be implicit");
+    int x = 42;
+    V v(std::move(x));
+    assert(v.index() == 1);
+    assert(&std::get<1>(v) == &x);
+  }
+#endif
+}
+
+struct BoomOnAnything {
+  template <class T>
+  constexpr BoomOnAnything(T) { static_assert(!std::is_same<T, T>::value, ""); }
+};
+
+void test_no_narrowing_check_for_class_types() {
+  using V = std::variant<int, BoomOnAnything>;
+  V v(42);
+  assert(v.index() == 0);
+  assert(std::get<0>(v) == 42);
+}
+
+struct Bar {};
+struct Baz {};
+void test_construction_with_repeated_types() {
+  using V = std::variant<int, Bar, Baz, int, Baz, int, int>;
+  static_assert(!std::is_constructible<V, int>::value, "");
+  static_assert(!std::is_constructible<V, Baz>::value, "");
+  // OK, the selected type appears only once and so it shouldn't
+  // be affected by the duplicate types.
+  static_assert(std::is_constructible<V, Bar>::value, "");
+}
+
+int main(int, char**) {
+  test_T_ctor_basic();
+  test_T_ctor_noexcept();
+  test_T_ctor_sfinae();
+  test_no_narrowing_check_for_class_types();
+  test_construction_with_repeated_types();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/conv.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/conv.pass.cpp
new file mode 100644
index 0000000..152f694
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/conv.pass.cpp
@@ -0,0 +1,42 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class T> constexpr variant(T&&) noexcept(see below);
+
+#include <variant>
+#include <string>
+#include <memory>
+
+#include "variant_test_helpers.h"
+
+int main(int, char**)
+{
+  static_assert(!std::is_constructible<std::variant<int, int>, int>::value, "");
+  static_assert(!std::is_constructible<std::variant<long, long long>, int>::value, "");
+  static_assert(std::is_constructible<std::variant<char>, int>::value == VariantAllowsNarrowingConversions, "");
+
+  static_assert(std::is_constructible<std::variant<std::string, float>, int>::value == VariantAllowsNarrowingConversions, "");
+  static_assert(std::is_constructible<std::variant<std::string, double>, int>::value == VariantAllowsNarrowingConversions, "");
+  static_assert(!std::is_constructible<std::variant<std::string, bool>, int>::value, "");
+
+  static_assert(!std::is_constructible<std::variant<int, bool>, decltype("meow")>::value, "");
+  static_assert(!std::is_constructible<std::variant<int, const bool>, decltype("meow")>::value, "");
+  static_assert(!std::is_constructible<std::variant<int, const volatile bool>, decltype("meow")>::value, "");
+
+  static_assert(!std::is_constructible<std::variant<bool>, std::true_type>::value, "");
+  static_assert(!std::is_constructible<std::variant<bool>, std::unique_ptr<char> >::value, "");
+  static_assert(!std::is_constructible<std::variant<bool>, decltype(nullptr)>::value, "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/copy.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/copy.pass.cpp
new file mode 100644
index 0000000..b328ba4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/copy.pass.cpp
@@ -0,0 +1,257 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr variant(variant const&);
+
+#include <cassert>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+
+struct NonT {
+  NonT(int v) : value(v) {}
+  NonT(const NonT &o) : value(o.value) {}
+  int value;
+};
+static_assert(!std::is_trivially_copy_constructible<NonT>::value, "");
+
+struct NoCopy {
+  NoCopy(const NoCopy &) = delete;
+};
+
+struct MoveOnly {
+  MoveOnly(const MoveOnly &) = delete;
+  MoveOnly(MoveOnly &&) = default;
+};
+
+struct MoveOnlyNT {
+  MoveOnlyNT(const MoveOnlyNT &) = delete;
+  MoveOnlyNT(MoveOnlyNT &&) {}
+};
+
+struct NTCopy {
+  constexpr NTCopy(int v) : value(v) {}
+  NTCopy(const NTCopy &that) : value(that.value) {}
+  NTCopy(NTCopy &&) = delete;
+  int value;
+};
+
+static_assert(!std::is_trivially_copy_constructible<NTCopy>::value, "");
+static_assert(std::is_copy_constructible<NTCopy>::value, "");
+
+struct TCopy {
+  constexpr TCopy(int v) : value(v) {}
+  TCopy(TCopy const &) = default;
+  TCopy(TCopy &&) = delete;
+  int value;
+};
+
+static_assert(std::is_trivially_copy_constructible<TCopy>::value, "");
+
+struct TCopyNTMove {
+  constexpr TCopyNTMove(int v) : value(v) {}
+  TCopyNTMove(const TCopyNTMove&) = default;
+  TCopyNTMove(TCopyNTMove&& that) : value(that.value) { that.value = -1; }
+  int value;
+};
+
+static_assert(std::is_trivially_copy_constructible<TCopyNTMove>::value, "");
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct MakeEmptyT {
+  static int alive;
+  MakeEmptyT() { ++alive; }
+  MakeEmptyT(const MakeEmptyT &) {
+    ++alive;
+    // Don't throw from the copy constructor since variant's assignment
+    // operator performs a copy before committing to the assignment.
+  }
+  MakeEmptyT(MakeEmptyT &&) { throw 42; }
+  MakeEmptyT &operator=(const MakeEmptyT &) { throw 42; }
+  MakeEmptyT &operator=(MakeEmptyT &&) { throw 42; }
+  ~MakeEmptyT() { --alive; }
+};
+
+int MakeEmptyT::alive = 0;
+
+template <class Variant> void makeEmpty(Variant &v) {
+  Variant v2(std::in_place_type<MakeEmptyT>);
+  try {
+    v = std::move(v2);
+    assert(false);
+  } catch (...) {
+    assert(v.valueless_by_exception());
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+void test_copy_ctor_sfinae() {
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NoCopy>;
+    static_assert(!std::is_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnly>;
+    static_assert(!std::is_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnlyNT>;
+    static_assert(!std::is_copy_constructible<V>::value, "");
+  }
+
+  // Make sure we properly propagate triviality (see P0602R4).
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_trivially_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NTCopy>;
+    static_assert(!std::is_trivially_copy_constructible<V>::value, "");
+    static_assert(std::is_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TCopy>;
+    static_assert(std::is_trivially_copy_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TCopyNTMove>;
+    static_assert(std::is_trivially_copy_constructible<V>::value, "");
+  }
+}
+
+void test_copy_ctor_basic() {
+  {
+    std::variant<int> v(std::in_place_index<0>, 42);
+    std::variant<int> v2 = v;
+    assert(v2.index() == 0);
+    assert(std::get<0>(v2) == 42);
+  }
+  {
+    std::variant<int, long> v(std::in_place_index<1>, 42);
+    std::variant<int, long> v2 = v;
+    assert(v2.index() == 1);
+    assert(std::get<1>(v2) == 42);
+  }
+  {
+    std::variant<NonT> v(std::in_place_index<0>, 42);
+    assert(v.index() == 0);
+    std::variant<NonT> v2(v);
+    assert(v2.index() == 0);
+    assert(std::get<0>(v2).value == 42);
+  }
+  {
+    std::variant<int, NonT> v(std::in_place_index<1>, 42);
+    assert(v.index() == 1);
+    std::variant<int, NonT> v2(v);
+    assert(v2.index() == 1);
+    assert(std::get<1>(v2).value == 42);
+  }
+
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  {
+    constexpr std::variant<int> v(std::in_place_index<0>, 42);
+    static_assert(v.index() == 0, "");
+    constexpr std::variant<int> v2 = v;
+    static_assert(v2.index() == 0, "");
+    static_assert(std::get<0>(v2) == 42, "");
+  }
+  {
+    constexpr std::variant<int, long> v(std::in_place_index<1>, 42);
+    static_assert(v.index() == 1, "");
+    constexpr std::variant<int, long> v2 = v;
+    static_assert(v2.index() == 1, "");
+    static_assert(std::get<1>(v2) == 42, "");
+  }
+  {
+    constexpr std::variant<TCopy> v(std::in_place_index<0>, 42);
+    static_assert(v.index() == 0, "");
+    constexpr std::variant<TCopy> v2(v);
+    static_assert(v2.index() == 0, "");
+    static_assert(std::get<0>(v2).value == 42, "");
+  }
+  {
+    constexpr std::variant<int, TCopy> v(std::in_place_index<1>, 42);
+    static_assert(v.index() == 1, "");
+    constexpr std::variant<int, TCopy> v2(v);
+    static_assert(v2.index() == 1, "");
+    static_assert(std::get<1>(v2).value == 42, "");
+  }
+  {
+    constexpr std::variant<TCopyNTMove> v(std::in_place_index<0>, 42);
+    static_assert(v.index() == 0, "");
+    constexpr std::variant<TCopyNTMove> v2(v);
+    static_assert(v2.index() == 0, "");
+    static_assert(std::get<0>(v2).value == 42, "");
+  }
+  {
+    constexpr std::variant<int, TCopyNTMove> v(std::in_place_index<1>, 42);
+    static_assert(v.index() == 1, "");
+    constexpr std::variant<int, TCopyNTMove> v2(v);
+    static_assert(v2.index() == 1, "");
+    static_assert(std::get<1>(v2).value == 42, "");
+  }
+}
+
+void test_copy_ctor_valueless_by_exception() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using V = std::variant<int, MakeEmptyT>;
+  V v1;
+  makeEmpty(v1);
+  const V &cv1 = v1;
+  V v(cv1);
+  assert(v.valueless_by_exception());
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+template <size_t Idx>
+constexpr bool test_constexpr_copy_ctor_imp(std::variant<long, void*, const int> const& v) {
+  auto v2 = v;
+  return v2.index() == v.index() &&
+         v2.index() == Idx &&
+         std::get<Idx>(v2) == std::get<Idx>(v);
+}
+
+void test_constexpr_copy_ctor() {
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  using V = std::variant<long, void*, const int>;
+#ifdef TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(std::is_trivially_destructible<V>::value, "");
+  static_assert(std::is_trivially_copy_constructible<V>::value, "");
+  static_assert(std::is_trivially_move_constructible<V>::value, "");
+  static_assert(!std::is_copy_assignable<V>::value, "");
+  static_assert(!std::is_move_assignable<V>::value, "");
+#else // TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(std::is_trivially_copyable<V>::value, "");
+#endif // TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(test_constexpr_copy_ctor_imp<0>(V(42l)), "");
+  static_assert(test_constexpr_copy_ctor_imp<1>(V(nullptr)), "");
+  static_assert(test_constexpr_copy_ctor_imp<2>(V(101)), "");
+}
+
+int main(int, char**) {
+  test_copy_ctor_basic();
+  test_copy_ctor_valueless_by_exception();
+  test_copy_ctor_sfinae();
+  test_constexpr_copy_ctor();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/default.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/default.pass.cpp
new file mode 100644
index 0000000..17b7242
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/default.pass.cpp
@@ -0,0 +1,126 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr variant() noexcept(see below);
+
+#include <cassert>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+struct NonDefaultConstructible {
+  constexpr NonDefaultConstructible(int) {}
+};
+
+struct NotNoexcept {
+  NotNoexcept() noexcept(false) {}
+};
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct DefaultCtorThrows {
+  DefaultCtorThrows() { throw 42; }
+};
+#endif
+
+void test_default_ctor_sfinae() {
+  {
+    using V = std::variant<std::monostate, int>;
+    static_assert(std::is_default_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<NonDefaultConstructible, int>;
+    static_assert(!std::is_default_constructible<V>::value, "");
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int &, int>;
+    static_assert(!std::is_default_constructible<V>::value, "");
+  }
+#endif
+}
+
+void test_default_ctor_noexcept() {
+  {
+    using V = std::variant<int>;
+    static_assert(std::is_nothrow_default_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<NotNoexcept>;
+    static_assert(!std::is_nothrow_default_constructible<V>::value, "");
+  }
+}
+
+void test_default_ctor_throws() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using V = std::variant<DefaultCtorThrows, int>;
+  try {
+    V v;
+    assert(false);
+  } catch (const int &ex) {
+    assert(ex == 42);
+  } catch (...) {
+    assert(false);
+  }
+#endif
+}
+
+void test_default_ctor_basic() {
+  {
+    std::variant<int> v;
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == 0);
+  }
+  {
+    std::variant<int, long> v;
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == 0);
+  }
+  {
+    std::variant<int, NonDefaultConstructible> v;
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == 0);
+  }
+  {
+    using V = std::variant<int, long>;
+    constexpr V v;
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v) == 0, "");
+  }
+  {
+    using V = std::variant<int, long>;
+    constexpr V v;
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v) == 0, "");
+  }
+  {
+    using V = std::variant<int, NonDefaultConstructible>;
+    constexpr V v;
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v) == 0, "");
+  }
+}
+
+int main(int, char**) {
+  test_default_ctor_basic();
+  test_default_ctor_sfinae();
+  test_default_ctor_noexcept();
+  test_default_ctor_throws();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_index_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_index_args.pass.cpp
new file mode 100644
index 0000000..4e96e59
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_index_args.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <size_t I, class ...Args>
+// constexpr explicit variant(in_place_index_t<I>, Args&&...);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "test_convertible.h"
+#include "test_macros.h"
+
+void test_ctor_sfinae() {
+  {
+    using V = std::variant<int>;
+    static_assert(
+        std::is_constructible<V, std::in_place_index_t<0>, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<0>, int>(), "");
+  }
+  {
+    using V = std::variant<int, long, long long>;
+    static_assert(
+        std::is_constructible<V, std::in_place_index_t<1>, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<1>, int>(), "");
+  }
+  {
+    using V = std::variant<int, long, int *>;
+    static_assert(
+        std::is_constructible<V, std::in_place_index_t<2>, int *>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<2>, int *>(), "");
+  }
+  { // args not convertible to type
+    using V = std::variant<int, long, int *>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_index_t<0>, int *>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<0>, int *>(), "");
+  }
+  { // index not in variant
+    using V = std::variant<int, long, int *>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_index_t<3>, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<3>, int>(), "");
+  }
+}
+
+void test_ctor_basic() {
+  {
+    constexpr std::variant<int> v(std::in_place_index<0>, 42);
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v) == 42, "");
+  }
+  {
+    constexpr std::variant<int, long, long> v(std::in_place_index<1>, 42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v) == 42, "");
+  }
+  {
+    constexpr std::variant<int, const int, long> v(std::in_place_index<1>, 42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v) == 42, "");
+  }
+  {
+    using V = std::variant<const int, volatile int, int>;
+    int x = 42;
+    V v(std::in_place_index<0>, x);
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == x);
+  }
+  {
+    using V = std::variant<const int, volatile int, int>;
+    int x = 42;
+    V v(std::in_place_index<1>, x);
+    assert(v.index() == 1);
+    assert(std::get<1>(v) == x);
+  }
+  {
+    using V = std::variant<const int, volatile int, int>;
+    int x = 42;
+    V v(std::in_place_index<2>, x);
+    assert(v.index() == 2);
+    assert(std::get<2>(v) == x);
+  }
+}
+
+int main(int, char**) {
+  test_ctor_basic();
+  test_ctor_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_index_init_list_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_index_init_list_args.pass.cpp
new file mode 100644
index 0000000..25eed24
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_index_init_list_args.pass.cpp
@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <size_t I, class Up, class ...Args>
+// constexpr explicit
+// variant(in_place_index_t<I>, initializer_list<Up>, Args&&...);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "test_convertible.h"
+#include "test_macros.h"
+
+struct InitList {
+  std::size_t size;
+  constexpr InitList(std::initializer_list<int> il) : size(il.size()) {}
+};
+
+struct InitListArg {
+  std::size_t size;
+  int value;
+  constexpr InitListArg(std::initializer_list<int> il, int v)
+      : size(il.size()), value(v) {}
+};
+
+void test_ctor_sfinae() {
+  using IL = std::initializer_list<int>;
+  { // just init list
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(std::is_constructible<V, std::in_place_index_t<0>, IL>::value,
+                  "");
+    static_assert(!test_convertible<V, std::in_place_index_t<0>, IL>(), "");
+  }
+  { // too many arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_index_t<0>, IL, int>::value,
+        "");
+    static_assert(!test_convertible<V, std::in_place_index_t<0>, IL, int>(),
+                  "");
+  }
+  { // too few arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_index_t<1>, IL>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<1>, IL>(), "");
+  }
+  { // init list and arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        std::is_constructible<V, std::in_place_index_t<1>, IL, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<1>, IL, int>(),
+                  "");
+  }
+  { // not constructible from arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_index_t<2>, IL>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<2>, IL>(), "");
+  }
+  { // index not in variant
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_index_t<3>, IL>::value, "");
+    static_assert(!test_convertible<V, std::in_place_index_t<3>, IL>(), "");
+  }
+}
+
+void test_ctor_basic() {
+  {
+    constexpr std::variant<InitList, InitListArg, InitList> v(
+        std::in_place_index<0>, {1, 2, 3});
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v).size == 3, "");
+  }
+  {
+    constexpr std::variant<InitList, InitListArg, InitList> v(
+        std::in_place_index<2>, {1, 2, 3});
+    static_assert(v.index() == 2, "");
+    static_assert(std::get<2>(v).size == 3, "");
+  }
+  {
+    constexpr std::variant<InitList, InitListArg, InitListArg> v(
+        std::in_place_index<1>, {1, 2, 3, 4}, 42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v).size == 4, "");
+    static_assert(std::get<1>(v).value == 42, "");
+  }
+}
+
+int main(int, char**) {
+  test_ctor_basic();
+  test_ctor_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_type_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_type_args.pass.cpp
new file mode 100644
index 0000000..2635b5c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_type_args.pass.cpp
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class Tp, class ...Args>
+// constexpr explicit variant(in_place_type_t<Tp>, Args&&...);
+
+#include <cassert>
+#include <type_traits>
+#include <variant>
+
+#include "test_convertible.h"
+#include "test_macros.h"
+
+void test_ctor_sfinae() {
+  {
+    using V = std::variant<int>;
+    static_assert(
+        std::is_constructible<V, std::in_place_type_t<int>, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_type_t<int>, int>(), "");
+  }
+  {
+    using V = std::variant<int, long, long long>;
+    static_assert(
+        std::is_constructible<V, std::in_place_type_t<long>, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_type_t<long>, int>(), "");
+  }
+  {
+    using V = std::variant<int, long, int *>;
+    static_assert(
+        std::is_constructible<V, std::in_place_type_t<int *>, int *>::value,
+        "");
+    static_assert(!test_convertible<V, std::in_place_type_t<int *>, int *>(),
+                  "");
+  }
+  { // duplicate type
+    using V = std::variant<int, long, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_type_t<int>, int>::value, "");
+    static_assert(!test_convertible<V, std::in_place_type_t<int>, int>(), "");
+  }
+  { // args not convertible to type
+    using V = std::variant<int, long, int *>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_type_t<int>, int *>::value, "");
+    static_assert(!test_convertible<V, std::in_place_type_t<int>, int *>(), "");
+  }
+  { // type not in variant
+    using V = std::variant<int, long, int *>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_type_t<long long>, int>::value,
+        "");
+    static_assert(!test_convertible<V, std::in_place_type_t<long long>, int>(),
+                  "");
+  }
+}
+
+void test_ctor_basic() {
+  {
+    constexpr std::variant<int> v(std::in_place_type<int>, 42);
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v) == 42, "");
+  }
+  {
+    constexpr std::variant<int, long> v(std::in_place_type<long>, 42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v) == 42, "");
+  }
+  {
+    constexpr std::variant<int, const int, long> v(
+        std::in_place_type<const int>, 42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v) == 42, "");
+  }
+  {
+    using V = std::variant<const int, volatile int, int>;
+    int x = 42;
+    V v(std::in_place_type<const int>, x);
+    assert(v.index() == 0);
+    assert(std::get<0>(v) == x);
+  }
+  {
+    using V = std::variant<const int, volatile int, int>;
+    int x = 42;
+    V v(std::in_place_type<volatile int>, x);
+    assert(v.index() == 1);
+    assert(std::get<1>(v) == x);
+  }
+  {
+    using V = std::variant<const int, volatile int, int>;
+    int x = 42;
+    V v(std::in_place_type<int>, x);
+    assert(v.index() == 2);
+    assert(std::get<2>(v) == x);
+  }
+}
+
+int main(int, char**) {
+  test_ctor_basic();
+  test_ctor_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_type_init_list_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_type_init_list_args.pass.cpp
new file mode 100644
index 0000000..3571505
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/in_place_type_init_list_args.pass.cpp
@@ -0,0 +1,113 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class Tp, class Up, class ...Args>
+// constexpr explicit
+// variant(in_place_type_t<Tp>, initializer_list<Up>, Args&&...);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "test_convertible.h"
+#include "test_macros.h"
+
+struct InitList {
+  std::size_t size;
+  constexpr InitList(std::initializer_list<int> il) : size(il.size()) {}
+};
+
+struct InitListArg {
+  std::size_t size;
+  int value;
+  constexpr InitListArg(std::initializer_list<int> il, int v)
+      : size(il.size()), value(v) {}
+};
+
+void test_ctor_sfinae() {
+  using IL = std::initializer_list<int>;
+  { // just init list
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        std::is_constructible<V, std::in_place_type_t<InitList>, IL>::value,
+        "");
+    static_assert(!test_convertible<V, std::in_place_type_t<InitList>, IL>(),
+                  "");
+  }
+  { // too many arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(!std::is_constructible<V, std::in_place_type_t<InitList>, IL,
+                                         int>::value,
+                  "");
+    static_assert(
+        !test_convertible<V, std::in_place_type_t<InitList>, IL, int>(), "");
+  }
+  { // too few arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_type_t<InitListArg>, IL>::value,
+        "");
+    static_assert(!test_convertible<V, std::in_place_type_t<InitListArg>, IL>(),
+                  "");
+  }
+  { // init list and arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(std::is_constructible<V, std::in_place_type_t<InitListArg>,
+                                        IL, int>::value,
+                  "");
+    static_assert(
+        !test_convertible<V, std::in_place_type_t<InitListArg>, IL, int>(), "");
+  }
+  { // not constructible from arguments
+    using V = std::variant<InitList, InitListArg, int>;
+    static_assert(
+        !std::is_constructible<V, std::in_place_type_t<int>, IL>::value, "");
+    static_assert(!test_convertible<V, std::in_place_type_t<int>, IL>(), "");
+  }
+  { // duplicate types in variant
+    using V = std::variant<InitListArg, InitListArg, int>;
+    static_assert(!std::is_constructible<V, std::in_place_type_t<InitListArg>,
+                                         IL, int>::value,
+                  "");
+    static_assert(
+        !test_convertible<V, std::in_place_type_t<InitListArg>, IL, int>(), "");
+  }
+}
+
+void test_ctor_basic() {
+  {
+    constexpr std::variant<InitList, InitListArg> v(
+        std::in_place_type<InitList>, {1, 2, 3});
+    static_assert(v.index() == 0, "");
+    static_assert(std::get<0>(v).size == 3, "");
+  }
+  {
+    constexpr std::variant<InitList, InitListArg> v(
+        std::in_place_type<InitListArg>, {1, 2, 3, 4}, 42);
+    static_assert(v.index() == 1, "");
+    static_assert(std::get<1>(v).size == 4, "");
+    static_assert(std::get<1>(v).value == 42, "");
+  }
+}
+
+int main(int, char**) {
+  test_ctor_basic();
+  test_ctor_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/move.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/move.pass.cpp
new file mode 100644
index 0000000..1c67f02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.ctor/move.pass.cpp
@@ -0,0 +1,330 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr variant(variant&&) noexcept(see below);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+
+struct ThrowsMove {
+  ThrowsMove(ThrowsMove &&) noexcept(false) {}
+};
+
+struct NoCopy {
+  NoCopy(const NoCopy &) = delete;
+};
+
+struct MoveOnly {
+  int value;
+  MoveOnly(int v) : value(v) {}
+  MoveOnly(const MoveOnly &) = delete;
+  MoveOnly(MoveOnly &&) = default;
+};
+
+struct MoveOnlyNT {
+  int value;
+  MoveOnlyNT(int v) : value(v) {}
+  MoveOnlyNT(const MoveOnlyNT &) = delete;
+  MoveOnlyNT(MoveOnlyNT &&other) : value(other.value) { other.value = -1; }
+};
+
+struct NTMove {
+  constexpr NTMove(int v) : value(v) {}
+  NTMove(const NTMove &) = delete;
+  NTMove(NTMove &&that) : value(that.value) { that.value = -1; }
+  int value;
+};
+
+static_assert(!std::is_trivially_move_constructible<NTMove>::value, "");
+static_assert(std::is_move_constructible<NTMove>::value, "");
+
+struct TMove {
+  constexpr TMove(int v) : value(v) {}
+  TMove(const TMove &) = delete;
+  TMove(TMove &&) = default;
+  int value;
+};
+
+static_assert(std::is_trivially_move_constructible<TMove>::value, "");
+
+struct TMoveNTCopy {
+  constexpr TMoveNTCopy(int v) : value(v) {}
+  TMoveNTCopy(const TMoveNTCopy& that) : value(that.value) {}
+  TMoveNTCopy(TMoveNTCopy&&) = default;
+  int value;
+};
+
+static_assert(std::is_trivially_move_constructible<TMoveNTCopy>::value, "");
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct MakeEmptyT {
+  static int alive;
+  MakeEmptyT() { ++alive; }
+  MakeEmptyT(const MakeEmptyT &) {
+    ++alive;
+    // Don't throw from the copy constructor since variant's assignment
+    // operator performs a copy before committing to the assignment.
+  }
+  MakeEmptyT(MakeEmptyT &&) { throw 42; }
+  MakeEmptyT &operator=(const MakeEmptyT &) { throw 42; }
+  MakeEmptyT &operator=(MakeEmptyT &&) { throw 42; }
+  ~MakeEmptyT() { --alive; }
+};
+
+int MakeEmptyT::alive = 0;
+
+template <class Variant> void makeEmpty(Variant &v) {
+  Variant v2(std::in_place_type<MakeEmptyT>);
+  try {
+    v = std::move(v2);
+    assert(false);
+  } catch (...) {
+    assert(v.valueless_by_exception());
+  }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+void test_move_noexcept() {
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_nothrow_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnly>;
+    static_assert(std::is_nothrow_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnlyNT>;
+    static_assert(!std::is_nothrow_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, ThrowsMove>;
+    static_assert(!std::is_nothrow_move_constructible<V>::value, "");
+  }
+}
+
+void test_move_ctor_sfinae() {
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnly>;
+    static_assert(std::is_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, MoveOnlyNT>;
+    static_assert(std::is_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NoCopy>;
+    static_assert(!std::is_move_constructible<V>::value, "");
+  }
+
+  // Make sure we properly propagate triviality (see P0602R4).
+  {
+    using V = std::variant<int, long>;
+    static_assert(std::is_trivially_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, NTMove>;
+    static_assert(!std::is_trivially_move_constructible<V>::value, "");
+    static_assert(std::is_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TMove>;
+    static_assert(std::is_trivially_move_constructible<V>::value, "");
+  }
+  {
+    using V = std::variant<int, TMoveNTCopy>;
+    static_assert(std::is_trivially_move_constructible<V>::value, "");
+  }
+}
+
+template <typename T>
+struct Result { size_t index; T value; };
+
+void test_move_ctor_basic() {
+  {
+    std::variant<int> v(std::in_place_index<0>, 42);
+    std::variant<int> v2 = std::move(v);
+    assert(v2.index() == 0);
+    assert(std::get<0>(v2) == 42);
+  }
+  {
+    std::variant<int, long> v(std::in_place_index<1>, 42);
+    std::variant<int, long> v2 = std::move(v);
+    assert(v2.index() == 1);
+    assert(std::get<1>(v2) == 42);
+  }
+  {
+    std::variant<MoveOnly> v(std::in_place_index<0>, 42);
+    assert(v.index() == 0);
+    std::variant<MoveOnly> v2(std::move(v));
+    assert(v2.index() == 0);
+    assert(std::get<0>(v2).value == 42);
+  }
+  {
+    std::variant<int, MoveOnly> v(std::in_place_index<1>, 42);
+    assert(v.index() == 1);
+    std::variant<int, MoveOnly> v2(std::move(v));
+    assert(v2.index() == 1);
+    assert(std::get<1>(v2).value == 42);
+  }
+  {
+    std::variant<MoveOnlyNT> v(std::in_place_index<0>, 42);
+    assert(v.index() == 0);
+    std::variant<MoveOnlyNT> v2(std::move(v));
+    assert(v2.index() == 0);
+    assert(std::get<0>(v).value == -1);
+    assert(std::get<0>(v2).value == 42);
+  }
+  {
+    std::variant<int, MoveOnlyNT> v(std::in_place_index<1>, 42);
+    assert(v.index() == 1);
+    std::variant<int, MoveOnlyNT> v2(std::move(v));
+    assert(v2.index() == 1);
+    assert(std::get<1>(v).value == -1);
+    assert(std::get<1>(v2).value == 42);
+  }
+
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  {
+    struct {
+      constexpr Result<int> operator()() const {
+        std::variant<int> v(std::in_place_index<0>, 42);
+        std::variant<int> v2 = std::move(v);
+        return {v2.index(), std::get<0>(std::move(v2))};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 0, "");
+    static_assert(result.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<long> operator()() const {
+        std::variant<int, long> v(std::in_place_index<1>, 42);
+        std::variant<int, long> v2 = std::move(v);
+        return {v2.index(), std::get<1>(std::move(v2))};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<TMove> operator()() const {
+        std::variant<TMove> v(std::in_place_index<0>, 42);
+        std::variant<TMove> v2(std::move(v));
+        return {v2.index(), std::get<0>(std::move(v2))};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 0, "");
+    static_assert(result.value.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<TMove> operator()() const {
+        std::variant<int, TMove> v(std::in_place_index<1>, 42);
+        std::variant<int, TMove> v2(std::move(v));
+        return {v2.index(), std::get<1>(std::move(v2))};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<TMoveNTCopy> operator()() const {
+        std::variant<TMoveNTCopy> v(std::in_place_index<0>, 42);
+        std::variant<TMoveNTCopy> v2(std::move(v));
+        return {v2.index(), std::get<0>(std::move(v2))};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 0, "");
+    static_assert(result.value.value == 42, "");
+  }
+  {
+    struct {
+      constexpr Result<TMoveNTCopy> operator()() const {
+        std::variant<int, TMoveNTCopy> v(std::in_place_index<1>, 42);
+        std::variant<int, TMoveNTCopy> v2(std::move(v));
+        return {v2.index(), std::get<1>(std::move(v2))};
+      }
+    } test;
+    constexpr auto result = test();
+    static_assert(result.index == 1, "");
+    static_assert(result.value.value == 42, "");
+  }
+}
+
+void test_move_ctor_valueless_by_exception() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using V = std::variant<int, MakeEmptyT>;
+  V v1;
+  makeEmpty(v1);
+  V v(std::move(v1));
+  assert(v.valueless_by_exception());
+#endif // TEST_HAS_NO_EXCEPTIONS
+}
+
+template <size_t Idx>
+constexpr bool test_constexpr_ctor_imp(std::variant<long, void*, const int> const& v) {
+  auto copy = v;
+  auto v2 = std::move(copy);
+  return v2.index() == v.index() &&
+         v2.index() == Idx &&
+        std::get<Idx>(v2) == std::get<Idx>(v);
+}
+
+void test_constexpr_move_ctor() {
+  // Make sure we properly propagate triviality, which implies constexpr-ness (see P0602R4).
+  using V = std::variant<long, void*, const int>;
+#ifdef TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(std::is_trivially_destructible<V>::value, "");
+  static_assert(std::is_trivially_copy_constructible<V>::value, "");
+  static_assert(std::is_trivially_move_constructible<V>::value, "");
+  static_assert(!std::is_copy_assignable<V>::value, "");
+  static_assert(!std::is_move_assignable<V>::value, "");
+#else // TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(std::is_trivially_copyable<V>::value, "");
+#endif // TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(std::is_trivially_move_constructible<V>::value, "");
+  static_assert(test_constexpr_ctor_imp<0>(V(42l)), "");
+  static_assert(test_constexpr_ctor_imp<1>(V(nullptr)), "");
+  static_assert(test_constexpr_ctor_imp<2>(V(101)), "");
+}
+
+int main(int, char**) {
+  test_move_ctor_basic();
+  test_move_ctor_valueless_by_exception();
+  test_move_noexcept();
+  test_move_ctor_sfinae();
+  test_constexpr_move_ctor();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.dtor/dtor.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.dtor/dtor.pass.cpp
new file mode 100644
index 0000000..2e02603
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.dtor/dtor.pass.cpp
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// ~variant();
+
+#include <cassert>
+#include <type_traits>
+#include <variant>
+
+#include "test_macros.h"
+
+struct NonTDtor {
+  static int count;
+  NonTDtor() = default;
+  ~NonTDtor() { ++count; }
+};
+int NonTDtor::count = 0;
+static_assert(!std::is_trivially_destructible<NonTDtor>::value, "");
+
+struct NonTDtor1 {
+  static int count;
+  NonTDtor1() = default;
+  ~NonTDtor1() { ++count; }
+};
+int NonTDtor1::count = 0;
+static_assert(!std::is_trivially_destructible<NonTDtor1>::value, "");
+
+struct TDtor {
+  TDtor(const TDtor &) {} // non-trivial copy
+  ~TDtor() = default;
+};
+static_assert(!std::is_trivially_copy_constructible<TDtor>::value, "");
+static_assert(std::is_trivially_destructible<TDtor>::value, "");
+
+int main(int, char**) {
+  {
+    using V = std::variant<int, long, TDtor>;
+    static_assert(std::is_trivially_destructible<V>::value, "");
+  }
+  {
+    using V = std::variant<NonTDtor, int, NonTDtor1>;
+    static_assert(!std::is_trivially_destructible<V>::value, "");
+    {
+      V v(std::in_place_index<0>);
+      assert(NonTDtor::count == 0);
+      assert(NonTDtor1::count == 0);
+    }
+    assert(NonTDtor::count == 1);
+    assert(NonTDtor1::count == 0);
+    NonTDtor::count = 0;
+    { V v(std::in_place_index<1>); }
+    assert(NonTDtor::count == 0);
+    assert(NonTDtor1::count == 0);
+    {
+      V v(std::in_place_index<2>);
+      assert(NonTDtor::count == 0);
+      assert(NonTDtor1::count == 0);
+    }
+    assert(NonTDtor::count == 0);
+    assert(NonTDtor1::count == 1);
+  }
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_index_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_index_args.pass.cpp
new file mode 100644
index 0000000..37a1849
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_index_args.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <size_t I, class ...Args>
+//   variant_alternative_t<I, variant<Types...>>& emplace(Args&&... args);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+template <class Var, size_t I, class... Args>
+constexpr auto test_emplace_exists_imp(int) -> decltype(
+    std::declval<Var>().template emplace<I>(std::declval<Args>()...), true) {
+  return true;
+}
+
+template <class, size_t, class...>
+constexpr auto test_emplace_exists_imp(long) -> bool {
+  return false;
+}
+
+template <class Var, size_t I, class... Args> constexpr bool emplace_exists() {
+  return test_emplace_exists_imp<Var, I, Args...>(0);
+}
+
+void test_emplace_sfinae() {
+  {
+    using V = std::variant<int, void *, const void *, TestTypes::NoCtors>;
+    static_assert(emplace_exists<V, 0>(), "");
+    static_assert(emplace_exists<V, 0, int>(), "");
+    static_assert(!emplace_exists<V, 0, decltype(nullptr)>(),
+                  "cannot construct");
+    static_assert(emplace_exists<V, 1, decltype(nullptr)>(), "");
+    static_assert(emplace_exists<V, 1, int *>(), "");
+    static_assert(!emplace_exists<V, 1, const int *>(), "");
+    static_assert(!emplace_exists<V, 1, int>(), "cannot construct");
+    static_assert(emplace_exists<V, 2, const int *>(), "");
+    static_assert(emplace_exists<V, 2, int *>(), "");
+    static_assert(!emplace_exists<V, 3>(), "cannot construct");
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int, int &, const int &, int &&, TestTypes::NoCtors>;
+    static_assert(emplace_exists<V, 0>(), "");
+    static_assert(emplace_exists<V, 0, int>(), "");
+    static_assert(emplace_exists<V, 0, long long>(), "");
+    static_assert(!emplace_exists<V, 0, int, int>(), "too many args");
+    static_assert(emplace_exists<V, 1, int &>(), "");
+    static_assert(!emplace_exists<V, 1>(), "cannot default construct ref");
+    static_assert(!emplace_exists<V, 1, const int &>(), "cannot bind ref");
+    static_assert(!emplace_exists<V, 1, int &&>(), "cannot bind ref");
+    static_assert(emplace_exists<V, 2, int &>(), "");
+    static_assert(emplace_exists<V, 2, const int &>(), "");
+    static_assert(emplace_exists<V, 2, int &&>(), "");
+    static_assert(!emplace_exists<V, 2, void *>(),
+                  "not constructible from void*");
+    static_assert(emplace_exists<V, 3, int>(), "");
+    static_assert(!emplace_exists<V, 3, int &>(), "cannot bind ref");
+    static_assert(!emplace_exists<V, 3, const int &>(), "cannot bind ref");
+    static_assert(!emplace_exists<V, 3, const int &&>(), "cannot bind ref");
+    static_assert(!emplace_exists<V, 4>(), "no ctors");
+  }
+#endif
+}
+
+void test_basic() {
+  {
+    using V = std::variant<int>;
+    V v(42);
+    auto& ref1 = v.emplace<0>();
+    static_assert(std::is_same_v<int&, decltype(ref1)>, "");
+    assert(std::get<0>(v) == 0);
+    assert(&ref1 == &std::get<0>(v));
+    auto& ref2 = v.emplace<0>(42);
+    static_assert(std::is_same_v<int&, decltype(ref2)>, "");
+    assert(std::get<0>(v) == 42);
+    assert(&ref2 == &std::get<0>(v));
+  }
+  {
+    using V =
+        std::variant<int, long, const void *, TestTypes::NoCtors, std::string>;
+    const int x = 100;
+    V v(std::in_place_index<0>, -1);
+    // default emplace a value
+    auto& ref1 = v.emplace<1>();
+    static_assert(std::is_same_v<long&, decltype(ref1)>, "");
+    assert(std::get<1>(v) == 0);
+    assert(&ref1 == &std::get<1>(v));
+    auto& ref2 = v.emplace<2>(&x);
+    static_assert(std::is_same_v<const void*&, decltype(ref2)>, "");
+    assert(std::get<2>(v) == &x);
+    assert(&ref2 == &std::get<2>(v));
+    // emplace with multiple args
+    auto& ref3 = v.emplace<4>(3u, 'a');
+    static_assert(std::is_same_v<std::string&, decltype(ref3)>, "");
+    assert(std::get<4>(v) == "aaa");
+    assert(&ref3 == &std::get<4>(v));
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int, long, const int &, int &&, TestTypes::NoCtors,
+                           std::string>;
+    const int x = 100;
+    int y = 42;
+    int z = 43;
+    V v(std::in_place_index<0>, -1);
+    // default emplace a value
+    auto& ref1 = v.emplace<1>();
+    static_assert(std::is_same_v<long&, decltype(ref1)>, "");
+    assert(std::get<1>(v) == 0);
+    assert(&ref1 == &std::get<1>(v));
+    // emplace a reference
+    auto& ref2 = v.emplace<2>(x);
+    static_assert(std::is_same_v<&, decltype(ref)>, "");
+    assert(&std::get<2>(v) == &x);
+    assert(&ref2 == &std::get<2>(v));
+    // emplace an rvalue reference
+    auto& ref3 = v.emplace<3>(std::move(y));
+    static_assert(std::is_same_v<&, decltype(ref)>, "");
+    assert(&std::get<3>(v) == &y);
+    assert(&ref3 == &std::get<3>(v));
+    // re-emplace a new reference over the active member
+    auto& ref4 = v.emplace<3>(std::move(z));
+    static_assert(std::is_same_v<&, decltype(ref)>, "");
+    assert(&std::get<3>(v) == &z);
+    assert(&ref4 == &std::get<3>(v));
+    // emplace with multiple args
+    auto& ref5 = v.emplace<5>(3u, 'a');
+    static_assert(std::is_same_v<std::string&, decltype(ref5)>, "");
+    assert(std::get<5>(v) == "aaa");
+    assert(&ref5 == &std::get<5>(v));
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_basic();
+  test_emplace_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_index_init_list_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_index_init_list_args.pass.cpp
new file mode 100644
index 0000000..3080678
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_index_init_list_args.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <size_t I, class U, class ...Args>
+//   variant_alternative_t<I, variant<Types...>>& emplace(initializer_list<U> il,Args&&... args);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+#include "test_macros.h"
+
+struct InitList {
+  std::size_t size;
+  constexpr InitList(std::initializer_list<int> il) : size(il.size()) {}
+};
+
+struct InitListArg {
+  std::size_t size;
+  int value;
+  constexpr InitListArg(std::initializer_list<int> il, int v)
+      : size(il.size()), value(v) {}
+};
+
+template <class Var, size_t I, class... Args>
+constexpr auto test_emplace_exists_imp(int) -> decltype(
+    std::declval<Var>().template emplace<I>(std::declval<Args>()...), true) {
+  return true;
+}
+
+template <class, size_t, class...>
+constexpr auto test_emplace_exists_imp(long) -> bool {
+  return false;
+}
+
+template <class Var, size_t I, class... Args> constexpr bool emplace_exists() {
+  return test_emplace_exists_imp<Var, I, Args...>(0);
+}
+
+void test_emplace_sfinae() {
+  using V =
+      std::variant<int, TestTypes::NoCtors, InitList, InitListArg, long, long>;
+  using IL = std::initializer_list<int>;
+  static_assert(!emplace_exists<V, 1, IL>(), "no such constructor");
+  static_assert(emplace_exists<V, 2, IL>(), "");
+  static_assert(!emplace_exists<V, 2, int>(), "args don't match");
+  static_assert(!emplace_exists<V, 2, IL, int>(), "too many args");
+  static_assert(emplace_exists<V, 3, IL, int>(), "");
+  static_assert(!emplace_exists<V, 3, int>(), "args don't match");
+  static_assert(!emplace_exists<V, 3, IL>(), "too few args");
+  static_assert(!emplace_exists<V, 3, IL, int, int>(), "too many args");
+}
+
+void test_basic() {
+  using V = std::variant<int, InitList, InitListArg, TestTypes::NoCtors>;
+  V v;
+  auto& ref1 = v.emplace<1>({1, 2, 3});
+  static_assert(std::is_same_v<InitList&, decltype(ref1)>, "");
+  assert(std::get<1>(v).size == 3);
+  assert(&ref1 == &std::get<1>(v));
+  auto& ref2 = v.emplace<2>({1, 2, 3, 4}, 42);
+  static_assert(std::is_same_v<InitListArg&, decltype(ref2)>, "");
+  assert(std::get<2>(v).size == 4);
+  assert(std::get<2>(v).value == 42);
+  assert(&ref2 == &std::get<2>(v));
+  auto& ref3 = v.emplace<1>({1});
+  static_assert(std::is_same_v<InitList&, decltype(ref3)>, "");
+  assert(std::get<1>(v).size == 1);
+  assert(&ref3 == &std::get<1>(v));
+}
+
+int main(int, char**) {
+  test_basic();
+  test_emplace_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_type_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_type_args.pass.cpp
new file mode 100644
index 0000000..eae070e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_type_args.pass.cpp
@@ -0,0 +1,161 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class T, class ...Args> T& emplace(Args&&... args);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+template <class Var, class T, class... Args>
+constexpr auto test_emplace_exists_imp(int) -> decltype(
+    std::declval<Var>().template emplace<T>(std::declval<Args>()...), true) {
+  return true;
+}
+
+template <class, class, class...>
+constexpr auto test_emplace_exists_imp(long) -> bool {
+  return false;
+}
+
+template <class... Args> constexpr bool emplace_exists() {
+  return test_emplace_exists_imp<Args...>(0);
+}
+
+void test_emplace_sfinae() {
+  {
+    using V = std::variant<int, void *, const void *, TestTypes::NoCtors>;
+    static_assert(emplace_exists<V, int>(), "");
+    static_assert(emplace_exists<V, int, int>(), "");
+    static_assert(!emplace_exists<V, int, decltype(nullptr)>(),
+                  "cannot construct");
+    static_assert(emplace_exists<V, void *, decltype(nullptr)>(), "");
+    static_assert(!emplace_exists<V, void *, int>(), "cannot construct");
+    static_assert(emplace_exists<V, void *, int *>(), "");
+    static_assert(!emplace_exists<V, void *, const int *>(), "");
+    static_assert(emplace_exists<V, const void *, const int *>(), "");
+    static_assert(emplace_exists<V, const void *, int *>(), "");
+    static_assert(!emplace_exists<V, TestTypes::NoCtors>(), "cannot construct");
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  using V = std::variant<int, int &, const int &, int &&, long, long,
+                         TestTypes::NoCtors>;
+  static_assert(emplace_exists<V, int>(), "");
+  static_assert(emplace_exists<V, int, int>(), "");
+  static_assert(emplace_exists<V, int, long long>(), "");
+  static_assert(!emplace_exists<V, int, int, int>(), "too many args");
+  static_assert(emplace_exists<V, int &, int &>(), "");
+  static_assert(!emplace_exists<V, int &>(), "cannot default construct ref");
+  static_assert(!emplace_exists<V, int &, const int &>(), "cannot bind ref");
+  static_assert(!emplace_exists<V, int &, int &&>(), "cannot bind ref");
+  static_assert(emplace_exists<V, const int &, int &>(), "");
+  static_assert(emplace_exists<V, const int &, const int &>(), "");
+  static_assert(emplace_exists<V, const int &, int &&>(), "");
+  static_assert(!emplace_exists<V, const int &, void *>(),
+                "not constructible from void*");
+  static_assert(emplace_exists<V, int &&, int>(), "");
+  static_assert(!emplace_exists<V, int &&, int &>(), "cannot bind ref");
+  static_assert(!emplace_exists<V, int &&, const int &>(), "cannot bind ref");
+  static_assert(!emplace_exists<V, int &&, const int &&>(), "cannot bind ref");
+  static_assert(!emplace_exists<V, long, long>(), "ambiguous");
+  static_assert(!emplace_exists<V, TestTypes::NoCtors>(),
+                "cannot construct void");
+#endif
+}
+
+void test_basic() {
+  {
+    using V = std::variant<int>;
+    V v(42);
+    auto& ref1 = v.emplace<int>();
+    static_assert(std::is_same_v<int&, decltype(ref1)>, "");
+    assert(std::get<0>(v) == 0);
+    assert(&ref1 == &std::get<0>(v));
+    auto& ref2 = v.emplace<int>(42);
+    static_assert(std::is_same_v<int&, decltype(ref2)>, "");
+    assert(std::get<0>(v) == 42);
+    assert(&ref2 == &std::get<0>(v));
+  }
+  {
+    using V =
+        std::variant<int, long, const void *, TestTypes::NoCtors, std::string>;
+    const int x = 100;
+    V v(std::in_place_type<int>, -1);
+    // default emplace a value
+    auto& ref1 = v.emplace<long>();
+    static_assert(std::is_same_v<long&, decltype(ref1)>, "");
+    assert(std::get<1>(v) == 0);
+    assert(&ref1 == &std::get<1>(v));
+    auto& ref2 = v.emplace<const void *>(&x);
+    static_assert(std::is_same_v<const void *&, decltype(ref2)>, "");
+    assert(std::get<2>(v) == &x);
+    assert(&ref2 == &std::get<2>(v));
+    // emplace with multiple args
+    auto& ref3 = v.emplace<std::string>(3u, 'a');
+    static_assert(std::is_same_v<std::string&, decltype(ref3)>, "");
+    assert(std::get<4>(v) == "aaa");
+    assert(&ref3 == &std::get<4>(v));
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  {
+    using V = std::variant<int, long, const int &, int &&, TestTypes::NoCtors,
+                           std::string>;
+    const int x = 100;
+    int y = 42;
+    int z = 43;
+    V v(std::in_place_index<0>, -1);
+    // default emplace a value
+    auto& ref1 = v.emplace<long>();
+    static_assert(std::is_same_v<long&, decltype(ref1)>, "");
+    assert(std::get<long>(v) == 0);
+    assert(&ref1 == &std::get<long>(v));
+    // emplace a reference
+    auto& ref2 = v.emplace<const int &>(x);
+    static_assert(std::is_same_v<const int&, decltype(ref2)>, "");
+    assert(&std::get<const int &>(v) == &x);
+    assert(&ref2 == &std::get<const int &>(v));
+    // emplace an rvalue reference
+    auto& ref3 = v.emplace<int &&>(std::move(y));
+    static_assert(std::is_same_v<int &&, decltype(ref3)>, "");
+    assert(&std::get<int &&>(v) == &y);
+    assert(&ref3 == &std::get<int &&>(v));
+    // re-emplace a new reference over the active member
+    auto& ref4 = v.emplace<int &&>(std::move(z));
+    static_assert(std::is_same_v<int &, decltype(ref4)>, "");
+    assert(&std::get<int &&>(v) == &z);
+    assert(&ref4 == &std::get<int &&>(v));
+    // emplace with multiple args
+    auto& ref5 = v.emplace<std::string>(3u, 'a');
+    static_assert(std::is_same_v<std::string&, decltype(ref5)>, "");
+    assert(std::get<std::string>(v) == "aaa");
+    assert(&ref5 == &std::get<std::string>(v));
+  }
+#endif
+}
+
+int main(int, char**) {
+  test_basic();
+  test_emplace_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_type_init_list_args.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_type_init_list_args.pass.cpp
new file mode 100644
index 0000000..af30e73
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.mod/emplace_type_init_list_args.pass.cpp
@@ -0,0 +1,94 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// template <class T, class U, class ...Args>
+//   T& emplace(initializer_list<U> il,Args&&... args);
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "archetypes.h"
+#include "test_convertible.h"
+#include "test_macros.h"
+
+struct InitList {
+  std::size_t size;
+  constexpr InitList(std::initializer_list<int> il) : size(il.size()) {}
+};
+
+struct InitListArg {
+  std::size_t size;
+  int value;
+  constexpr InitListArg(std::initializer_list<int> il, int v)
+      : size(il.size()), value(v) {}
+};
+
+template <class Var, class T, class... Args>
+constexpr auto test_emplace_exists_imp(int) -> decltype(
+    std::declval<Var>().template emplace<T>(std::declval<Args>()...), true) {
+  return true;
+}
+
+template <class, class, class...>
+constexpr auto test_emplace_exists_imp(long) -> bool {
+  return false;
+}
+
+template <class... Args> constexpr bool emplace_exists() {
+  return test_emplace_exists_imp<Args...>(0);
+}
+
+void test_emplace_sfinae() {
+  using V =
+      std::variant<int, TestTypes::NoCtors, InitList, InitListArg, long, long>;
+  using IL = std::initializer_list<int>;
+  static_assert(emplace_exists<V, InitList, IL>(), "");
+  static_assert(!emplace_exists<V, InitList, int>(), "args don't match");
+  static_assert(!emplace_exists<V, InitList, IL, int>(), "too many args");
+  static_assert(emplace_exists<V, InitListArg, IL, int>(), "");
+  static_assert(!emplace_exists<V, InitListArg, int>(), "args don't match");
+  static_assert(!emplace_exists<V, InitListArg, IL>(), "too few args");
+  static_assert(!emplace_exists<V, InitListArg, IL, int, int>(),
+                "too many args");
+}
+
+void test_basic() {
+  using V = std::variant<int, InitList, InitListArg, TestTypes::NoCtors>;
+  V v;
+  auto& ref1 = v.emplace<InitList>({1, 2, 3});
+  static_assert(std::is_same_v<InitList&,decltype(ref1)>, "");
+  assert(std::get<InitList>(v).size == 3);
+  assert(&ref1 == &std::get<InitList>(v));
+  auto& ref2 = v.emplace<InitListArg>({1, 2, 3, 4}, 42);
+  static_assert(std::is_same_v<InitListArg&,decltype(ref2)>, "");
+  assert(std::get<InitListArg>(v).size == 4);
+  assert(std::get<InitListArg>(v).value == 42);
+  assert(&ref2 == &std::get<InitListArg>(v));
+  auto& ref3 = v.emplace<InitList>({1});
+  static_assert(std::is_same_v<InitList&,decltype(ref3)>, "");
+  assert(std::get<InitList>(v).size == 1);
+  assert(&ref3 == &std::get<InitList>(v));
+}
+
+int main(int, char**) {
+  test_basic();
+  test_emplace_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.status/index.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.status/index.pass.cpp
new file mode 100644
index 0000000..db64f98
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.status/index.pass.cpp
@@ -0,0 +1,61 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr size_t index() const noexcept;
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "archetypes.h"
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+
+int main(int, char**) {
+  {
+    using V = std::variant<int, long>;
+    constexpr V v;
+    static_assert(v.index() == 0, "");
+  }
+  {
+    using V = std::variant<int, long>;
+    V v;
+    assert(v.index() == 0);
+  }
+  {
+    using V = std::variant<int, long>;
+    constexpr V v(std::in_place_index<1>);
+    static_assert(v.index() == 1, "");
+  }
+  {
+    using V = std::variant<int, std::string>;
+    V v("abc");
+    assert(v.index() == 1);
+    v = 42;
+    assert(v.index() == 0);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v;
+    assert(v.index() == 0);
+    makeEmpty(v);
+    assert(v.index() == std::variant_npos);
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.status/valueless_by_exception.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.status/valueless_by_exception.pass.cpp
new file mode 100644
index 0000000..161c5fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.status/valueless_by_exception.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// constexpr bool valueless_by_exception() const noexcept;
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "archetypes.h"
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+
+int main(int, char**) {
+  {
+    using V = std::variant<int, long>;
+    constexpr V v;
+    static_assert(!v.valueless_by_exception(), "");
+  }
+  {
+    using V = std::variant<int, long>;
+    V v;
+    assert(!v.valueless_by_exception());
+  }
+  {
+    using V = std::variant<int, long, std::string>;
+    const V v("abc");
+    assert(!v.valueless_by_exception());
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v;
+    assert(!v.valueless_by_exception());
+    makeEmpty(v);
+    assert(v.valueless_by_exception());
+  }
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.swap/swap.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.swap/swap.pass.cpp
new file mode 100644
index 0000000..b61f508
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant.swap/swap.pass.cpp
@@ -0,0 +1,594 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+// void swap(variant& rhs) noexcept(see below)
+
+#include <cassert>
+#include <string>
+#include <type_traits>
+#include <variant>
+
+#include "test_convertible.h"
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+struct NotSwappable {};
+void swap(NotSwappable &, NotSwappable &) = delete;
+
+struct NotCopyable {
+  NotCopyable() = default;
+  NotCopyable(const NotCopyable &) = delete;
+  NotCopyable &operator=(const NotCopyable &) = delete;
+};
+
+struct NotCopyableWithSwap {
+  NotCopyableWithSwap() = default;
+  NotCopyableWithSwap(const NotCopyableWithSwap &) = delete;
+  NotCopyableWithSwap &operator=(const NotCopyableWithSwap &) = delete;
+};
+void swap(NotCopyableWithSwap &, NotCopyableWithSwap) {}
+
+struct NotMoveAssignable {
+  NotMoveAssignable() = default;
+  NotMoveAssignable(NotMoveAssignable &&) = default;
+  NotMoveAssignable &operator=(NotMoveAssignable &&) = delete;
+};
+
+struct NotMoveAssignableWithSwap {
+  NotMoveAssignableWithSwap() = default;
+  NotMoveAssignableWithSwap(NotMoveAssignableWithSwap &&) = default;
+  NotMoveAssignableWithSwap &operator=(NotMoveAssignableWithSwap &&) = delete;
+};
+void swap(NotMoveAssignableWithSwap &, NotMoveAssignableWithSwap &) noexcept {}
+
+template <bool Throws> void do_throw() {}
+
+template <> void do_throw<true>() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  throw 42;
+#else
+  std::abort();
+#endif
+}
+
+template <bool NT_Copy, bool NT_Move, bool NT_CopyAssign, bool NT_MoveAssign,
+          bool NT_Swap, bool EnableSwap = true>
+struct NothrowTypeImp {
+  static int move_called;
+  static int move_assign_called;
+  static int swap_called;
+  static void reset() { move_called = move_assign_called = swap_called = 0; }
+  NothrowTypeImp() = default;
+  explicit NothrowTypeImp(int v) : value(v) {}
+  NothrowTypeImp(const NothrowTypeImp &o) noexcept(NT_Copy) : value(o.value) {
+    assert(false);
+  } // never called by test
+  NothrowTypeImp(NothrowTypeImp &&o) noexcept(NT_Move) : value(o.value) {
+    ++move_called;
+    do_throw<!NT_Move>();
+    o.value = -1;
+  }
+  NothrowTypeImp &operator=(const NothrowTypeImp &) noexcept(NT_CopyAssign) {
+    assert(false);
+    return *this;
+  } // never called by the tests
+  NothrowTypeImp &operator=(NothrowTypeImp &&o) noexcept(NT_MoveAssign) {
+    ++move_assign_called;
+    do_throw<!NT_MoveAssign>();
+    value = o.value;
+    o.value = -1;
+    return *this;
+  }
+  int value;
+};
+template <bool NT_Copy, bool NT_Move, bool NT_CopyAssign, bool NT_MoveAssign,
+          bool NT_Swap, bool EnableSwap>
+int NothrowTypeImp<NT_Copy, NT_Move, NT_CopyAssign, NT_MoveAssign, NT_Swap,
+                   EnableSwap>::move_called = 0;
+template <bool NT_Copy, bool NT_Move, bool NT_CopyAssign, bool NT_MoveAssign,
+          bool NT_Swap, bool EnableSwap>
+int NothrowTypeImp<NT_Copy, NT_Move, NT_CopyAssign, NT_MoveAssign, NT_Swap,
+                   EnableSwap>::move_assign_called = 0;
+template <bool NT_Copy, bool NT_Move, bool NT_CopyAssign, bool NT_MoveAssign,
+          bool NT_Swap, bool EnableSwap>
+int NothrowTypeImp<NT_Copy, NT_Move, NT_CopyAssign, NT_MoveAssign, NT_Swap,
+                   EnableSwap>::swap_called = 0;
+
+template <bool NT_Copy, bool NT_Move, bool NT_CopyAssign, bool NT_MoveAssign,
+          bool NT_Swap>
+void swap(NothrowTypeImp<NT_Copy, NT_Move, NT_CopyAssign, NT_MoveAssign,
+                         NT_Swap, true> &lhs,
+          NothrowTypeImp<NT_Copy, NT_Move, NT_CopyAssign, NT_MoveAssign,
+                         NT_Swap, true> &rhs) noexcept(NT_Swap) {
+  lhs.swap_called++;
+  do_throw<!NT_Swap>();
+  int tmp = lhs.value;
+  lhs.value = rhs.value;
+  rhs.value = tmp;
+}
+
+// throwing copy, nothrow move ctor/assign, no swap provided
+using NothrowMoveable = NothrowTypeImp<false, true, false, true, false, false>;
+// throwing copy and move assign, nothrow move ctor, no swap provided
+using NothrowMoveCtor = NothrowTypeImp<false, true, false, false, false, false>;
+// nothrow move ctor, throwing move assignment, swap provided
+using NothrowMoveCtorWithThrowingSwap =
+    NothrowTypeImp<false, true, false, false, false, true>;
+// throwing move ctor, nothrow move assignment, no swap provided
+using ThrowingMoveCtor =
+    NothrowTypeImp<false, false, false, true, false, false>;
+// throwing special members, nothrowing swap
+using ThrowingTypeWithNothrowSwap =
+    NothrowTypeImp<false, false, false, false, true, true>;
+using NothrowTypeWithThrowingSwap =
+    NothrowTypeImp<true, true, true, true, false, true>;
+// throwing move assign with nothrow move and nothrow swap
+using ThrowingMoveAssignNothrowMoveCtorWithSwap =
+    NothrowTypeImp<false, true, false, false, true, true>;
+// throwing move assign with nothrow move but no swap.
+using ThrowingMoveAssignNothrowMoveCtor =
+    NothrowTypeImp<false, true, false, false, false, false>;
+
+struct NonThrowingNonNoexceptType {
+  static int move_called;
+  static void reset() { move_called = 0; }
+  NonThrowingNonNoexceptType() = default;
+  NonThrowingNonNoexceptType(int v) : value(v) {}
+  NonThrowingNonNoexceptType(NonThrowingNonNoexceptType &&o) noexcept(false)
+      : value(o.value) {
+    ++move_called;
+    o.value = -1;
+  }
+  NonThrowingNonNoexceptType &
+  operator=(NonThrowingNonNoexceptType &&) noexcept(false) {
+    assert(false); // never called by the tests.
+    return *this;
+  }
+  int value;
+};
+int NonThrowingNonNoexceptType::move_called = 0;
+
+struct ThrowsOnSecondMove {
+  int value;
+  int move_count;
+  ThrowsOnSecondMove(int v) : value(v), move_count(0) {}
+  ThrowsOnSecondMove(ThrowsOnSecondMove &&o) noexcept(false)
+      : value(o.value), move_count(o.move_count + 1) {
+    if (move_count == 2)
+      do_throw<true>();
+    o.value = -1;
+  }
+  ThrowsOnSecondMove &operator=(ThrowsOnSecondMove &&) {
+    assert(false); // not called by test
+    return *this;
+  }
+};
+
+void test_swap_valueless_by_exception() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  using V = std::variant<int, MakeEmptyT>;
+  { // both empty
+    V v1;
+    makeEmpty(v1);
+    V v2;
+    makeEmpty(v2);
+    assert(MakeEmptyT::alive == 0);
+    { // member swap
+      v1.swap(v2);
+      assert(v1.valueless_by_exception());
+      assert(v2.valueless_by_exception());
+      assert(MakeEmptyT::alive == 0);
+    }
+    { // non-member swap
+      swap(v1, v2);
+      assert(v1.valueless_by_exception());
+      assert(v2.valueless_by_exception());
+      assert(MakeEmptyT::alive == 0);
+    }
+  }
+  { // only one empty
+    V v1(42);
+    V v2;
+    makeEmpty(v2);
+    { // member swap
+      v1.swap(v2);
+      assert(v1.valueless_by_exception());
+      assert(std::get<0>(v2) == 42);
+      // swap again
+      v2.swap(v1);
+      assert(v2.valueless_by_exception());
+      assert(std::get<0>(v1) == 42);
+    }
+    { // non-member swap
+      swap(v1, v2);
+      assert(v1.valueless_by_exception());
+      assert(std::get<0>(v2) == 42);
+      // swap again
+      swap(v1, v2);
+      assert(v2.valueless_by_exception());
+      assert(std::get<0>(v1) == 42);
+    }
+  }
+#endif
+}
+
+void test_swap_same_alternative() {
+  {
+    using T = ThrowingTypeWithNothrowSwap;
+    using V = std::variant<T, int>;
+    T::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>, 100);
+    v1.swap(v2);
+    assert(T::swap_called == 1);
+    assert(std::get<0>(v1).value == 100);
+    assert(std::get<0>(v2).value == 42);
+    swap(v1, v2);
+    assert(T::swap_called == 2);
+    assert(std::get<0>(v1).value == 42);
+    assert(std::get<0>(v2).value == 100);
+  }
+  {
+    using T = NothrowMoveable;
+    using V = std::variant<T, int>;
+    T::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>, 100);
+    v1.swap(v2);
+    assert(T::swap_called == 0);
+    assert(T::move_called == 1);
+    assert(T::move_assign_called == 2);
+    assert(std::get<0>(v1).value == 100);
+    assert(std::get<0>(v2).value == 42);
+    T::reset();
+    swap(v1, v2);
+    assert(T::swap_called == 0);
+    assert(T::move_called == 1);
+    assert(T::move_assign_called == 2);
+    assert(std::get<0>(v1).value == 42);
+    assert(std::get<0>(v2).value == 100);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using T = NothrowTypeWithThrowingSwap;
+    using V = std::variant<T, int>;
+    T::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T::swap_called == 1);
+    assert(T::move_called == 0);
+    assert(T::move_assign_called == 0);
+    assert(std::get<0>(v1).value == 42);
+    assert(std::get<0>(v2).value == 100);
+  }
+  {
+    using T = ThrowingMoveCtor;
+    using V = std::variant<T, int>;
+    T::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T::move_called == 1); // call threw
+    assert(T::move_assign_called == 0);
+    assert(std::get<0>(v1).value ==
+           42); // throw happened before v1 was moved from
+    assert(std::get<0>(v2).value == 100);
+  }
+  {
+    using T = ThrowingMoveAssignNothrowMoveCtor;
+    using V = std::variant<T, int>;
+    T::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<0>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T::move_called == 1);
+    assert(T::move_assign_called == 1);  // call threw and didn't complete
+    assert(std::get<0>(v1).value == -1); // v1 was moved from
+    assert(std::get<0>(v2).value == 100);
+  }
+#endif
+}
+
+void test_swap_different_alternatives() {
+  {
+    using T = NothrowMoveCtorWithThrowingSwap;
+    using V = std::variant<T, int>;
+    T::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<1>, 100);
+    v1.swap(v2);
+    assert(T::swap_called == 0);
+    // The libc++ implementation double copies the argument, and not
+    // the variant swap is called on.
+    LIBCPP_ASSERT(T::move_called == 1);
+    assert(T::move_called <= 2);
+    assert(T::move_assign_called == 0);
+    assert(std::get<1>(v1) == 100);
+    assert(std::get<0>(v2).value == 42);
+    T::reset();
+    swap(v1, v2);
+    assert(T::swap_called == 0);
+    LIBCPP_ASSERT(T::move_called == 2);
+    assert(T::move_called <= 2);
+    assert(T::move_assign_called == 0);
+    assert(std::get<0>(v1).value == 42);
+    assert(std::get<1>(v2) == 100);
+  }
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  {
+    using T1 = ThrowingTypeWithNothrowSwap;
+    using T2 = NonThrowingNonNoexceptType;
+    using V = std::variant<T1, T2>;
+    T1::reset();
+    T2::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<1>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T1::swap_called == 0);
+    assert(T1::move_called == 1); // throws
+    assert(T1::move_assign_called == 0);
+    // FIXME: libc++ shouldn't move from T2 here.
+    LIBCPP_ASSERT(T2::move_called == 1);
+    assert(T2::move_called <= 1);
+    assert(std::get<0>(v1).value == 42);
+    if (T2::move_called != 0)
+      assert(v2.valueless_by_exception());
+    else
+      assert(std::get<1>(v2).value == 100);
+  }
+  {
+    using T1 = NonThrowingNonNoexceptType;
+    using T2 = ThrowingTypeWithNothrowSwap;
+    using V = std::variant<T1, T2>;
+    T1::reset();
+    T2::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<1>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    LIBCPP_ASSERT(T1::move_called == 0);
+    assert(T1::move_called <= 1);
+    assert(T2::swap_called == 0);
+    assert(T2::move_called == 1); // throws
+    assert(T2::move_assign_called == 0);
+    if (T1::move_called != 0)
+      assert(v1.valueless_by_exception());
+    else
+      assert(std::get<0>(v1).value == 42);
+    assert(std::get<1>(v2).value == 100);
+  }
+// FIXME: The tests below are just very libc++ specific
+#ifdef _LIBCPP_VERSION
+  {
+    using T1 = ThrowsOnSecondMove;
+    using T2 = NonThrowingNonNoexceptType;
+    using V = std::variant<T1, T2>;
+    T2::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<1>, 100);
+    v1.swap(v2);
+    assert(T2::move_called == 2);
+    assert(std::get<1>(v1).value == 100);
+    assert(std::get<0>(v2).value == 42);
+    assert(std::get<0>(v2).move_count == 1);
+  }
+  {
+    using T1 = NonThrowingNonNoexceptType;
+    using T2 = ThrowsOnSecondMove;
+    using V = std::variant<T1, T2>;
+    T1::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<1>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T1::move_called == 1);
+    assert(v1.valueless_by_exception());
+    assert(std::get<0>(v2).value == 42);
+  }
+#endif
+// testing libc++ extension. If either variant stores a nothrow move
+// constructible type v1.swap(v2) provides the strong exception safety
+// guarantee.
+#ifdef _LIBCPP_VERSION
+  {
+
+    using T1 = ThrowingTypeWithNothrowSwap;
+    using T2 = NothrowMoveable;
+    using V = std::variant<T1, T2>;
+    T1::reset();
+    T2::reset();
+    V v1(std::in_place_index<0>, 42);
+    V v2(std::in_place_index<1>, 100);
+    try {
+      v1.swap(v2);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T1::swap_called == 0);
+    assert(T1::move_called == 1);
+    assert(T1::move_assign_called == 0);
+    assert(T2::swap_called == 0);
+    assert(T2::move_called == 2);
+    assert(T2::move_assign_called == 0);
+    assert(std::get<0>(v1).value == 42);
+    assert(std::get<1>(v2).value == 100);
+    // swap again, but call v2's swap.
+    T1::reset();
+    T2::reset();
+    try {
+      v2.swap(v1);
+      assert(false);
+    } catch (int) {
+    }
+    assert(T1::swap_called == 0);
+    assert(T1::move_called == 1);
+    assert(T1::move_assign_called == 0);
+    assert(T2::swap_called == 0);
+    assert(T2::move_called == 2);
+    assert(T2::move_assign_called == 0);
+    assert(std::get<0>(v1).value == 42);
+    assert(std::get<1>(v2).value == 100);
+  }
+#endif // _LIBCPP_VERSION
+#endif
+}
+
+template <class Var>
+constexpr auto has_swap_member_imp(int)
+    -> decltype(std::declval<Var &>().swap(std::declval<Var &>()), true) {
+  return true;
+}
+
+template <class Var> constexpr auto has_swap_member_imp(long) -> bool {
+  return false;
+}
+
+template <class Var> constexpr bool has_swap_member() {
+  return has_swap_member_imp<Var>(0);
+}
+
+void test_swap_sfinae() {
+  {
+    // This variant type does not provide either a member or non-member swap
+    // but is still swappable via the generic swap algorithm, since the
+    // variant is move constructible and move assignable.
+    using V = std::variant<int, NotSwappable>;
+    LIBCPP_STATIC_ASSERT(!has_swap_member<V>(), "");
+    static_assert(std::is_swappable_v<V>, "");
+  }
+  {
+    using V = std::variant<int, NotCopyable>;
+    LIBCPP_STATIC_ASSERT(!has_swap_member<V>(), "");
+    static_assert(!std::is_swappable_v<V>, "");
+  }
+  {
+    using V = std::variant<int, NotCopyableWithSwap>;
+    LIBCPP_STATIC_ASSERT(!has_swap_member<V>(), "");
+    static_assert(!std::is_swappable_v<V>, "");
+  }
+  {
+    using V = std::variant<int, NotMoveAssignable>;
+    LIBCPP_STATIC_ASSERT(!has_swap_member<V>(), "");
+    static_assert(!std::is_swappable_v<V>, "");
+  }
+}
+
+void test_swap_noexcept() {
+  {
+    using V = std::variant<int, NothrowMoveable>;
+    static_assert(std::is_swappable_v<V> && has_swap_member<V>(), "");
+    static_assert(std::is_nothrow_swappable_v<V>, "");
+    // instantiate swap
+    V v1, v2;
+    v1.swap(v2);
+    swap(v1, v2);
+  }
+  {
+    using V = std::variant<int, NothrowMoveCtor>;
+    static_assert(std::is_swappable_v<V> && has_swap_member<V>(), "");
+    static_assert(!std::is_nothrow_swappable_v<V>, "");
+    // instantiate swap
+    V v1, v2;
+    v1.swap(v2);
+    swap(v1, v2);
+  }
+  {
+    using V = std::variant<int, ThrowingTypeWithNothrowSwap>;
+    static_assert(std::is_swappable_v<V> && has_swap_member<V>(), "");
+    static_assert(!std::is_nothrow_swappable_v<V>, "");
+    // instantiate swap
+    V v1, v2;
+    v1.swap(v2);
+    swap(v1, v2);
+  }
+  {
+    using V = std::variant<int, ThrowingMoveAssignNothrowMoveCtor>;
+    static_assert(std::is_swappable_v<V> && has_swap_member<V>(), "");
+    static_assert(!std::is_nothrow_swappable_v<V>, "");
+    // instantiate swap
+    V v1, v2;
+    v1.swap(v2);
+    swap(v1, v2);
+  }
+  {
+    using V = std::variant<int, ThrowingMoveAssignNothrowMoveCtorWithSwap>;
+    static_assert(std::is_swappable_v<V> && has_swap_member<V>(), "");
+    static_assert(std::is_nothrow_swappable_v<V>, "");
+    // instantiate swap
+    V v1, v2;
+    v1.swap(v2);
+    swap(v1, v2);
+  }
+  {
+    using V = std::variant<int, NotMoveAssignableWithSwap>;
+    static_assert(std::is_swappable_v<V> && has_swap_member<V>(), "");
+    static_assert(std::is_nothrow_swappable_v<V>, "");
+    // instantiate swap
+    V v1, v2;
+    v1.swap(v2);
+    swap(v1, v2);
+  }
+  {
+    // This variant type does not provide either a member or non-member swap
+    // but is still swappable via the generic swap algorithm, since the
+    // variant is move constructible and move assignable.
+    using V = std::variant<int, NotSwappable>;
+    LIBCPP_STATIC_ASSERT(!has_swap_member<V>(), "");
+    static_assert(std::is_swappable_v<V>, "");
+    static_assert(std::is_nothrow_swappable_v<V>, "");
+    V v1, v2;
+    swap(v1, v2);
+  }
+}
+
+#ifdef _LIBCPP_VERSION
+// This is why variant should SFINAE member swap. :-)
+template class std::variant<int, NotSwappable>;
+#endif
+
+int main(int, char**) {
+  test_swap_valueless_by_exception();
+  test_swap_same_alternative();
+  test_swap_different_alternatives();
+  test_swap_sfinae();
+  test_swap_noexcept();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_array.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_array.fail.cpp
new file mode 100644
index 0000000..39e2f96
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_array.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+
+#include <variant>
+#include <type_traits>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+#include "test_convertible.h"
+
+int main(int, char**)
+{
+    // expected-error-re@variant:* 3 {{{{(static_assert|static assertion)}} failed}}
+    std::variant<int, int[]> v; // expected-note {{requested here}}
+    std::variant<int, int[42]> v2; // expected-note {{requested here}}
+    std::variant<int, int[][42]> v3; // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_empty.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_empty.fail.cpp
new file mode 100644
index 0000000..8639479
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_empty.fail.cpp
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+int main(int, char**)
+{
+    // expected-error-re@variant:* 1 {{{{(static_assert|static assertion)}} failed}}
+    std::variant<> v; // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_reference.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_reference.fail.cpp
new file mode 100644
index 0000000..84ff882
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_reference.fail.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+int main(int, char**)
+{
+    // expected-error-re@variant:* 3 {{{{(static_assert|static assertion)}} failed}}
+    std::variant<int, int&> v; // expected-note {{requested here}}
+    std::variant<int, const int &> v2; // expected-note {{requested here}}
+    std::variant<int, int&&> v3; // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_void.fail.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_void.fail.cpp
new file mode 100644
index 0000000..56c01a2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.variant/variant_void.fail.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// <variant>
+
+// template <class ...Types> class variant;
+
+
+#include <variant>
+#include <type_traits>
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+#include "test_convertible.h"
+
+int main(int, char**)
+{
+    // expected-error-re@variant:* 3 {{{{(static_assert|static assertion)}} failed}}
+    std::variant<int, void> v; // expected-note {{requested here}}
+    std::variant<int, const void> v2; // expected-note {{requested here}}
+    std::variant<const volatile void, int> v3; // expected-note {{requested here}}
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/robust_against_adl.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/robust_against_adl.pass.cpp
new file mode 100644
index 0000000..4a651f3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/robust_against_adl.pass.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+// template <class Visitor, class... Variants>
+// constexpr see below visit(Visitor&& vis, Variants&&... vars);
+
+#include <variant>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+constexpr bool test(bool do_it)
+{
+    if (do_it) {
+        std::variant<Holder<Incomplete>*, int> v = nullptr;
+        std::visit([](auto){}, v);
+        std::visit([](auto) -> Holder<Incomplete>* { return nullptr; }, v);
+#if TEST_STD_VER > 17
+        std::visit<void>([](auto){}, v);
+        std::visit<void*>([](auto) -> Holder<Incomplete>* { return nullptr; }, v);
+#endif
+    }
+    return true;
+}
+
+int main(int, char**)
+{
+    test(true);
+#if TEST_STD_VER > 17
+    static_assert(test(true));
+#endif
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/visit.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/visit.pass.cpp
new file mode 100644
index 0000000..1e29073
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/visit.pass.cpp
@@ -0,0 +1,438 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+// template <class Visitor, class... Variants>
+// constexpr see below visit(Visitor&& vis, Variants&&... vars);
+
+#include <cassert>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+void test_call_operator_forwarding() {
+  using Fn = ForwardingCallObject;
+  Fn obj{};
+  const Fn &cobj = obj;
+  { // test call operator forwarding - no variant
+    std::visit(obj);
+    assert(Fn::check_call<>(CT_NonConst | CT_LValue));
+    std::visit(cobj);
+    assert(Fn::check_call<>(CT_Const | CT_LValue));
+    std::visit(std::move(obj));
+    assert(Fn::check_call<>(CT_NonConst | CT_RValue));
+    std::visit(std::move(cobj));
+    assert(Fn::check_call<>(CT_Const | CT_RValue));
+  }
+  { // test call operator forwarding - single variant, single arg
+    using V = std::variant<int>;
+    V v(42);
+    std::visit(obj, v);
+    assert(Fn::check_call<int &>(CT_NonConst | CT_LValue));
+    std::visit(cobj, v);
+    assert(Fn::check_call<int &>(CT_Const | CT_LValue));
+    std::visit(std::move(obj), v);
+    assert(Fn::check_call<int &>(CT_NonConst | CT_RValue));
+    std::visit(std::move(cobj), v);
+    assert(Fn::check_call<int &>(CT_Const | CT_RValue));
+  }
+  { // test call operator forwarding - single variant, multi arg
+    using V = std::variant<int, long, double>;
+    V v(42l);
+    std::visit(obj, v);
+    assert(Fn::check_call<long &>(CT_NonConst | CT_LValue));
+    std::visit(cobj, v);
+    assert(Fn::check_call<long &>(CT_Const | CT_LValue));
+    std::visit(std::move(obj), v);
+    assert(Fn::check_call<long &>(CT_NonConst | CT_RValue));
+    std::visit(std::move(cobj), v);
+    assert(Fn::check_call<long &>(CT_Const | CT_RValue));
+  }
+  { // test call operator forwarding - multi variant, multi arg
+    using V = std::variant<int, long, double>;
+    using V2 = std::variant<int *, std::string>;
+    V v(42l);
+    V2 v2("hello");
+    std::visit(obj, v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_NonConst | CT_LValue)));
+    std::visit(cobj, v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_Const | CT_LValue)));
+    std::visit(std::move(obj), v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_NonConst | CT_RValue)));
+    std::visit(std::move(cobj), v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_Const | CT_RValue)));
+  }
+  {
+    using V = std::variant<int, long, double, std::string>;
+    V v1(42l), v2("hello"), v3(101), v4(1.1);
+    std::visit(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_NonConst | CT_LValue)));
+    std::visit(cobj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_Const | CT_LValue)));
+    std::visit(std::move(obj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_NonConst | CT_RValue)));
+    std::visit(std::move(cobj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_Const | CT_RValue)));
+  }
+  {
+    using V = std::variant<int, long, double, int*, std::string>;
+    V v1(42l), v2("hello"), v3(nullptr), v4(1.1);
+    std::visit(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_NonConst | CT_LValue)));
+    std::visit(cobj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_Const | CT_LValue)));
+    std::visit(std::move(obj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_NonConst | CT_RValue)));
+    std::visit(std::move(cobj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_Const | CT_RValue)));
+  }
+}
+
+void test_argument_forwarding() {
+  using Fn = ForwardingCallObject;
+  Fn obj{};
+  const auto Val = CT_LValue | CT_NonConst;
+  { // single argument - value type
+    using V = std::variant<int>;
+    V v(42);
+    const V &cv = v;
+    std::visit(obj, v);
+    assert(Fn::check_call<int &>(Val));
+    std::visit(obj, cv);
+    assert(Fn::check_call<const int &>(Val));
+    std::visit(obj, std::move(v));
+    assert(Fn::check_call<int &&>(Val));
+    std::visit(obj, std::move(cv));
+    assert(Fn::check_call<const int &&>(Val));
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  { // single argument - lvalue reference
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    const V &cv = v;
+    std::visit(obj, v);
+    assert(Fn::check_call<int &>(Val));
+    std::visit(obj, cv);
+    assert(Fn::check_call<int &>(Val));
+    std::visit(obj, std::move(v));
+    assert(Fn::check_call<int &>(Val));
+    std::visit(obj, std::move(cv));
+    assert(Fn::check_call<int &>(Val));
+  }
+  { // single argument - rvalue reference
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    const V &cv = v;
+    std::visit(obj, v);
+    assert(Fn::check_call<int &>(Val));
+    std::visit(obj, cv);
+    assert(Fn::check_call<int &>(Val));
+    std::visit(obj, std::move(v));
+    assert(Fn::check_call<int &&>(Val));
+    std::visit(obj, std::move(cv));
+    assert(Fn::check_call<int &&>(Val));
+  }
+#endif
+  { // multi argument - multi variant
+    using V = std::variant<int, std::string, long>;
+    V v1(42), v2("hello"), v3(43l);
+    std::visit(obj, v1, v2, v3);
+    assert((Fn::check_call<int &, std::string &, long &>(Val)));
+    std::visit(obj, std::as_const(v1), std::as_const(v2), std::move(v3));
+    assert((Fn::check_call<const int &, const std::string &, long &&>(Val)));
+  }
+  {
+    using V = std::variant<int, long, double, std::string>;
+    V v1(42l), v2("hello"), v3(101), v4(1.1);
+    std::visit(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(Val)));
+    std::visit(obj, std::as_const(v1), std::as_const(v2), std::move(v3), std::move(v4));
+    assert((Fn::check_call<const long &, const std::string &, int &&, double &&>(Val)));
+  }
+  {
+    using V = std::variant<int, long, double, int*, std::string>;
+    V v1(42l), v2("hello"), v3(nullptr), v4(1.1);
+    std::visit(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(Val)));
+    std::visit(obj, std::as_const(v1), std::as_const(v2), std::move(v3), std::move(v4));
+    assert((Fn::check_call<const long &, const std::string &, int *&&, double &&>(Val)));
+  }
+}
+
+void test_return_type() {
+  using Fn = ForwardingCallObject;
+  Fn obj{};
+  const Fn &cobj = obj;
+  { // test call operator forwarding - no variant
+    static_assert(std::is_same_v<decltype(std::visit(obj)), Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(cobj)), const Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(obj))), Fn&&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(cobj))), const Fn&&>);
+  }
+  { // test call operator forwarding - single variant, single arg
+    using V = std::variant<int>;
+    V v(42);
+    static_assert(std::is_same_v<decltype(std::visit(obj, v)), Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(cobj, v)), const Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(obj), v)), Fn&&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(cobj), v)), const Fn&&>);
+  }
+  { // test call operator forwarding - single variant, multi arg
+    using V = std::variant<int, long, double>;
+    V v(42l);
+    static_assert(std::is_same_v<decltype(std::visit(obj, v)), Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(cobj, v)), const Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(obj), v)), Fn&&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(cobj), v)), const Fn&&>);
+  }
+  { // test call operator forwarding - multi variant, multi arg
+    using V = std::variant<int, long, double>;
+    using V2 = std::variant<int *, std::string>;
+    V v(42l);
+    V2 v2("hello");
+    static_assert(std::is_same_v<decltype(std::visit(obj, v, v2)), Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(cobj, v, v2)), const Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(obj), v, v2)), Fn&&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(cobj), v, v2)), const Fn&&>);
+  }
+  {
+    using V = std::variant<int, long, double, std::string>;
+    V v1(42l), v2("hello"), v3(101), v4(1.1);
+    static_assert(std::is_same_v<decltype(std::visit(obj, v1, v2, v3, v4)), Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(cobj, v1, v2, v3, v4)), const Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(obj), v1, v2, v3, v4)), Fn&&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(cobj), v1, v2, v3, v4)), const Fn&&>);
+  }
+  {
+    using V = std::variant<int, long, double, int*, std::string>;
+    V v1(42l), v2("hello"), v3(nullptr), v4(1.1);
+    static_assert(std::is_same_v<decltype(std::visit(obj, v1, v2, v3, v4)), Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(cobj, v1, v2, v3, v4)), const Fn&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(obj), v1, v2, v3, v4)), Fn&&>);
+    static_assert(std::is_same_v<decltype(std::visit(std::move(cobj), v1, v2, v3, v4)), const Fn&&>);
+  }
+}
+
+void test_constexpr() {
+  constexpr ReturnFirst obj{};
+  constexpr ReturnArity aobj{};
+  {
+    using V = std::variant<int>;
+    constexpr V v(42);
+    static_assert(std::visit(obj, v) == 42, "");
+  }
+  {
+    using V = std::variant<short, long, char>;
+    constexpr V v(42l);
+    static_assert(std::visit(obj, v) == 42, "");
+  }
+  {
+    using V1 = std::variant<int>;
+    using V2 = std::variant<int, char *, long long>;
+    using V3 = std::variant<bool, int, int>;
+    constexpr V1 v1;
+    constexpr V2 v2(nullptr);
+    constexpr V3 v3;
+    static_assert(std::visit(aobj, v1, v2, v3) == 3, "");
+  }
+  {
+    using V1 = std::variant<int>;
+    using V2 = std::variant<int, char *, long long>;
+    using V3 = std::variant<void *, int, int>;
+    constexpr V1 v1;
+    constexpr V2 v2(nullptr);
+    constexpr V3 v3;
+    static_assert(std::visit(aobj, v1, v2, v3) == 3, "");
+  }
+  {
+    using V = std::variant<int, long, double, int *>;
+    constexpr V v1(42l), v2(101), v3(nullptr), v4(1.1);
+    static_assert(std::visit(aobj, v1, v2, v3, v4) == 4, "");
+  }
+  {
+    using V = std::variant<int, long, double, long long, int *>;
+    constexpr V v1(42l), v2(101), v3(nullptr), v4(1.1);
+    static_assert(std::visit(aobj, v1, v2, v3, v4) == 4, "");
+  }
+}
+
+void test_exceptions() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  ReturnArity obj{};
+  auto test = [&](auto &&... args) {
+    try {
+      std::visit(obj, args...);
+    } catch (const std::bad_variant_access &) {
+      return true;
+    } catch (...) {
+    }
+    return false;
+  };
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v;
+    makeEmpty(v);
+    assert(test(v));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using V2 = std::variant<long, std::string, void *>;
+    V v;
+    makeEmpty(v);
+    V2 v2("hello");
+    assert(test(v, v2));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using V2 = std::variant<long, std::string, void *>;
+    V v;
+    makeEmpty(v);
+    V2 v2("hello");
+    assert(test(v2, v));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using V2 = std::variant<long, std::string, void *, MakeEmptyT>;
+    V v;
+    makeEmpty(v);
+    V2 v2;
+    makeEmpty(v2);
+    assert(test(v, v2));
+  }
+  {
+    using V = std::variant<int, long, double, MakeEmptyT>;
+    V v1(42l), v2(101), v3(202), v4(1.1);
+    makeEmpty(v1);
+    assert(test(v1, v2, v3, v4));
+  }
+  {
+    using V = std::variant<int, long, double, long long, MakeEmptyT>;
+    V v1(42l), v2(101), v3(202), v4(1.1);
+    makeEmpty(v1);
+    makeEmpty(v2);
+    makeEmpty(v3);
+    makeEmpty(v4);
+    assert(test(v1, v2, v3, v4));
+  }
+#endif
+}
+
+// See https://llvm.org/PR31916
+void test_caller_accepts_nonconst() {
+  struct A {};
+  struct Visitor {
+    void operator()(A&) {}
+  };
+  std::variant<A> v;
+  std::visit(Visitor{}, v);
+}
+
+struct MyVariant : std::variant<short, long, float> {};
+
+namespace std {
+template <size_t Index>
+void get(const MyVariant&) {
+  assert(false);
+}
+} // namespace std
+
+void test_derived_from_variant() {
+  auto v1 = MyVariant{42};
+  const auto cv1 = MyVariant{142};
+  std::visit([](auto x) { assert(x == 42); }, v1);
+  std::visit([](auto x) { assert(x == 142); }, cv1);
+  std::visit([](auto x) { assert(x == -1.25f); }, MyVariant{-1.25f});
+  std::visit([](auto x) { assert(x == 42); }, std::move(v1));
+  std::visit([](auto x) { assert(x == 142); }, std::move(cv1));
+
+  // Check that visit does not take index nor valueless_by_exception members from the base class.
+  struct EvilVariantBase {
+    int index;
+    char valueless_by_exception;
+  };
+
+  struct EvilVariant1 : std::variant<int, long, double>,
+                        std::tuple<int>,
+                        EvilVariantBase {
+    using std::variant<int, long, double>::variant;
+  };
+
+  std::visit([](auto x) { assert(x == 12); }, EvilVariant1{12});
+  std::visit([](auto x) { assert(x == 12.3); }, EvilVariant1{12.3});
+
+  // Check that visit unambiguously picks the variant, even if the other base has __impl member.
+  struct ImplVariantBase {
+    struct Callable {
+      bool operator()() const { assert(false); return false; }
+    };
+
+    Callable __impl;
+  };
+
+  struct EvilVariant2 : std::variant<int, long, double>, ImplVariantBase {
+    using std::variant<int, long, double>::variant;
+  };
+
+  std::visit([](auto x) { assert(x == 12); }, EvilVariant2{12});
+  std::visit([](auto x) { assert(x == 12.3); }, EvilVariant2{12.3});
+}
+
+struct any_visitor {
+  template <typename T>
+  void operator()(const T&) const {}
+};
+
+template <typename T, typename = decltype(std::visit(
+                          std::declval<any_visitor&>(), std::declval<T>()))>
+constexpr bool has_visit(int) {
+  return true;
+}
+
+template <typename T>
+constexpr bool has_visit(...) {
+  return false;
+}
+
+void test_sfinae() {
+  struct BadVariant : std::variant<short>, std::variant<long, float> {};
+  struct BadVariant2 : private std::variant<long, float> {};
+  struct GoodVariant : std::variant<long, float> {};
+  struct GoodVariant2 : GoodVariant {};
+
+  static_assert(!has_visit<int>(0));
+  static_assert(!has_visit<BadVariant>(0));
+  static_assert(!has_visit<BadVariant2>(0));
+  static_assert(has_visit<std::variant<int>>(0));
+  static_assert(has_visit<GoodVariant>(0));
+  static_assert(has_visit<GoodVariant2>(0));
+}
+
+int main(int, char**) {
+  test_call_operator_forwarding();
+  test_argument_forwarding();
+  test_return_type();
+  test_constexpr();
+  test_exceptions();
+  test_caller_accepts_nonconst();
+  test_derived_from_variant();
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/visit_return_type.pass.cpp b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/visit_return_type.pass.cpp
new file mode 100644
index 0000000..3ae5372
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/std/utilities/variant/variant.visit/visit_return_type.pass.cpp
@@ -0,0 +1,521 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+// Throwing bad_variant_access is supported starting in macosx10.13
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12}} && !no-exceptions
+
+// <variant>
+// template <class R, class Visitor, class... Variants>
+// constexpr R visit(Visitor&& vis, Variants&&... vars);
+
+#include <cassert>
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <variant>
+
+#include "test_macros.h"
+#include "variant_test_helpers.h"
+
+template <typename ReturnType>
+void test_call_operator_forwarding() {
+  using Fn = ForwardingCallObject;
+  Fn obj{};
+  const Fn &cobj = obj;
+  { // test call operator forwarding - no variant
+    std::visit<ReturnType>(obj);
+    assert(Fn::check_call<>(CT_NonConst | CT_LValue));
+    std::visit<ReturnType>(cobj);
+    assert(Fn::check_call<>(CT_Const | CT_LValue));
+    std::visit<ReturnType>(std::move(obj));
+    assert(Fn::check_call<>(CT_NonConst | CT_RValue));
+    std::visit<ReturnType>(std::move(cobj));
+    assert(Fn::check_call<>(CT_Const | CT_RValue));
+  }
+  { // test call operator forwarding - single variant, single arg
+    using V = std::variant<int>;
+    V v(42);
+    std::visit<ReturnType>(obj, v);
+    assert(Fn::check_call<int &>(CT_NonConst | CT_LValue));
+    std::visit<ReturnType>(cobj, v);
+    assert(Fn::check_call<int &>(CT_Const | CT_LValue));
+    std::visit<ReturnType>(std::move(obj), v);
+    assert(Fn::check_call<int &>(CT_NonConst | CT_RValue));
+    std::visit<ReturnType>(std::move(cobj), v);
+    assert(Fn::check_call<int &>(CT_Const | CT_RValue));
+  }
+  { // test call operator forwarding - single variant, multi arg
+    using V = std::variant<int, long, double>;
+    V v(42l);
+    std::visit<ReturnType>(obj, v);
+    assert(Fn::check_call<long &>(CT_NonConst | CT_LValue));
+    std::visit<ReturnType>(cobj, v);
+    assert(Fn::check_call<long &>(CT_Const | CT_LValue));
+    std::visit<ReturnType>(std::move(obj), v);
+    assert(Fn::check_call<long &>(CT_NonConst | CT_RValue));
+    std::visit<ReturnType>(std::move(cobj), v);
+    assert(Fn::check_call<long &>(CT_Const | CT_RValue));
+  }
+  { // test call operator forwarding - multi variant, multi arg
+    using V = std::variant<int, long, double>;
+    using V2 = std::variant<int *, std::string>;
+    V v(42l);
+    V2 v2("hello");
+    std::visit<int>(obj, v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_NonConst | CT_LValue)));
+    std::visit<ReturnType>(cobj, v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_Const | CT_LValue)));
+    std::visit<ReturnType>(std::move(obj), v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_NonConst | CT_RValue)));
+    std::visit<ReturnType>(std::move(cobj), v, v2);
+    assert((Fn::check_call<long &, std::string &>(CT_Const | CT_RValue)));
+  }
+  {
+    using V = std::variant<int, long, double, std::string>;
+    V v1(42l), v2("hello"), v3(101), v4(1.1);
+    std::visit<ReturnType>(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_NonConst | CT_LValue)));
+    std::visit<ReturnType>(cobj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_Const | CT_LValue)));
+    std::visit<ReturnType>(std::move(obj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_NonConst | CT_RValue)));
+    std::visit<ReturnType>(std::move(cobj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(CT_Const | CT_RValue)));
+  }
+  {
+    using V = std::variant<int, long, double, int*, std::string>;
+    V v1(42l), v2("hello"), v3(nullptr), v4(1.1);
+    std::visit<ReturnType>(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_NonConst | CT_LValue)));
+    std::visit<ReturnType>(cobj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_Const | CT_LValue)));
+    std::visit<ReturnType>(std::move(obj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_NonConst | CT_RValue)));
+    std::visit<ReturnType>(std::move(cobj), v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(CT_Const | CT_RValue)));
+  }
+}
+
+template <typename ReturnType>
+void test_argument_forwarding() {
+  using Fn = ForwardingCallObject;
+  Fn obj{};
+  const auto Val = CT_LValue | CT_NonConst;
+  { // single argument - value type
+    using V = std::variant<int>;
+    V v(42);
+    const V &cv = v;
+    std::visit<ReturnType>(obj, v);
+    assert(Fn::check_call<int &>(Val));
+    std::visit<ReturnType>(obj, cv);
+    assert(Fn::check_call<const int &>(Val));
+    std::visit<ReturnType>(obj, std::move(v));
+    assert(Fn::check_call<int &&>(Val));
+    std::visit<ReturnType>(obj, std::move(cv));
+    assert(Fn::check_call<const int &&>(Val));
+  }
+#if !defined(TEST_VARIANT_HAS_NO_REFERENCES)
+  { // single argument - lvalue reference
+    using V = std::variant<int &>;
+    int x = 42;
+    V v(x);
+    const V &cv = v;
+    std::visit<ReturnType>(obj, v);
+    assert(Fn::check_call<int &>(Val));
+    std::visit<ReturnType>(obj, cv);
+    assert(Fn::check_call<int &>(Val));
+    std::visit<ReturnType>(obj, std::move(v));
+    assert(Fn::check_call<int &>(Val));
+    std::visit<ReturnType>(obj, std::move(cv));
+    assert(Fn::check_call<int &>(Val));
+  }
+  { // single argument - rvalue reference
+    using V = std::variant<int &&>;
+    int x = 42;
+    V v(std::move(x));
+    const V &cv = v;
+    std::visit<ReturnType>(obj, v);
+    assert(Fn::check_call<int &>(Val));
+    std::visit<ReturnType>(obj, cv);
+    assert(Fn::check_call<int &>(Val));
+    std::visit<ReturnType>(obj, std::move(v));
+    assert(Fn::check_call<int &&>(Val));
+    std::visit<ReturnType>(obj, std::move(cv));
+    assert(Fn::check_call<int &&>(Val));
+  }
+#endif
+  { // multi argument - multi variant
+    using V = std::variant<int, std::string, long>;
+    V v1(42), v2("hello"), v3(43l);
+    std::visit<ReturnType>(obj, v1, v2, v3);
+    assert((Fn::check_call<int &, std::string &, long &>(Val)));
+    std::visit<ReturnType>(obj, std::as_const(v1), std::as_const(v2), std::move(v3));
+    assert((Fn::check_call<const int &, const std::string &, long &&>(Val)));
+  }
+  {
+    using V = std::variant<int, long, double, std::string>;
+    V v1(42l), v2("hello"), v3(101), v4(1.1);
+    std::visit<ReturnType>(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int &, double &>(Val)));
+    std::visit<ReturnType>(obj, std::as_const(v1), std::as_const(v2), std::move(v3), std::move(v4));
+    assert((Fn::check_call<const long &, const std::string &, int &&, double &&>(Val)));
+  }
+  {
+    using V = std::variant<int, long, double, int*, std::string>;
+    V v1(42l), v2("hello"), v3(nullptr), v4(1.1);
+    std::visit<ReturnType>(obj, v1, v2, v3, v4);
+    assert((Fn::check_call<long &, std::string &, int *&, double &>(Val)));
+    std::visit<ReturnType>(obj, std::as_const(v1), std::as_const(v2), std::move(v3), std::move(v4));
+    assert((Fn::check_call<const long &, const std::string &, int *&&, double &&>(Val)));
+  }
+}
+
+template <typename ReturnType>
+void test_return_type() {
+  using Fn = ForwardingCallObject;
+  Fn obj{};
+  const Fn &cobj = obj;
+  { // test call operator forwarding - no variant
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(obj)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(cobj)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(obj))), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(cobj))), ReturnType>);
+  }
+  { // test call operator forwarding - single variant, single arg
+    using V = std::variant<int>;
+    V v(42);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(obj, v)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(cobj, v)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(obj), v)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(cobj), v)), ReturnType>);
+  }
+  { // test call operator forwarding - single variant, multi arg
+    using V = std::variant<int, long, double>;
+    V v(42l);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(obj, v)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(cobj, v)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(obj), v)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(cobj), v)), ReturnType>);
+  }
+  { // test call operator forwarding - multi variant, multi arg
+    using V = std::variant<int, long, double>;
+    using V2 = std::variant<int *, std::string>;
+    V v(42l);
+    V2 v2("hello");
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(obj, v, v2)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(cobj, v, v2)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(obj), v, v2)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(cobj), v, v2)), ReturnType>);
+  }
+  {
+    using V = std::variant<int, long, double, std::string>;
+    V v1(42l), v2("hello"), v3(101), v4(1.1);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(obj, v1, v2, v3, v4)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(cobj, v1, v2, v3, v4)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(obj), v1, v2, v3, v4)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(cobj), v1, v2, v3, v4)), ReturnType>);
+  }
+  {
+    using V = std::variant<int, long, double, int*, std::string>;
+    V v1(42l), v2("hello"), v3(nullptr), v4(1.1);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(obj, v1, v2, v3, v4)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(cobj, v1, v2, v3, v4)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(obj), v1, v2, v3, v4)), ReturnType>);
+    static_assert(std::is_same_v<decltype(std::visit<ReturnType>(std::move(cobj), v1, v2, v3, v4)), ReturnType>);
+  }
+}
+
+void test_constexpr_void() {
+  constexpr ReturnFirst obj{};
+  constexpr ReturnArity aobj{};
+  {
+    using V = std::variant<int>;
+    constexpr V v(42);
+    static_assert((std::visit<void>(obj, v), 42) == 42, "");
+  }
+  {
+    using V = std::variant<short, long, char>;
+    constexpr V v(42l);
+    static_assert((std::visit<void>(obj, v), 42) == 42, "");
+  }
+  {
+    using V1 = std::variant<int>;
+    using V2 = std::variant<int, char *, long long>;
+    using V3 = std::variant<bool, int, int>;
+    constexpr V1 v1;
+    constexpr V2 v2(nullptr);
+    constexpr V3 v3;
+    static_assert((std::visit<void>(aobj, v1, v2, v3), 3) == 3, "");
+  }
+  {
+    using V1 = std::variant<int>;
+    using V2 = std::variant<int, char *, long long>;
+    using V3 = std::variant<void *, int, int>;
+    constexpr V1 v1;
+    constexpr V2 v2(nullptr);
+    constexpr V3 v3;
+    static_assert((std::visit<void>(aobj, v1, v2, v3), 3) == 3, "");
+  }
+  {
+    using V = std::variant<int, long, double, int *>;
+    constexpr V v1(42l), v2(101), v3(nullptr), v4(1.1);
+    static_assert((std::visit<void>(aobj, v1, v2, v3, v4), 4) == 4, "");
+  }
+  {
+    using V = std::variant<int, long, double, long long, int *>;
+    constexpr V v1(42l), v2(101), v3(nullptr), v4(1.1);
+    static_assert((std::visit<void>(aobj, v1, v2, v3, v4), 4) == 4, "");
+  }
+}
+
+void test_constexpr_int() {
+  constexpr ReturnFirst obj{};
+  constexpr ReturnArity aobj{};
+  {
+    using V = std::variant<int>;
+    constexpr V v(42);
+    static_assert(std::visit<int>(obj, v) == 42, "");
+  }
+  {
+    using V = std::variant<short, long, char>;
+    constexpr V v(42l);
+    static_assert(std::visit<int>(obj, v) == 42, "");
+  }
+  {
+    using V1 = std::variant<int>;
+    using V2 = std::variant<int, char *, long long>;
+    using V3 = std::variant<bool, int, int>;
+    constexpr V1 v1;
+    constexpr V2 v2(nullptr);
+    constexpr V3 v3;
+    static_assert(std::visit<int>(aobj, v1, v2, v3) == 3, "");
+  }
+  {
+    using V1 = std::variant<int>;
+    using V2 = std::variant<int, char *, long long>;
+    using V3 = std::variant<void *, int, int>;
+    constexpr V1 v1;
+    constexpr V2 v2(nullptr);
+    constexpr V3 v3;
+    static_assert(std::visit<int>(aobj, v1, v2, v3) == 3, "");
+  }
+  {
+    using V = std::variant<int, long, double, int *>;
+    constexpr V v1(42l), v2(101), v3(nullptr), v4(1.1);
+    static_assert(std::visit<int>(aobj, v1, v2, v3, v4) == 4, "");
+  }
+  {
+    using V = std::variant<int, long, double, long long, int *>;
+    constexpr V v1(42l), v2(101), v3(nullptr), v4(1.1);
+    static_assert(std::visit<int>(aobj, v1, v2, v3, v4) == 4, "");
+  }
+}
+
+template <typename ReturnType>
+void test_exceptions() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+  ReturnArity obj{};
+  auto test = [&](auto &&... args) {
+    try {
+      std::visit<ReturnType>(obj, args...);
+    } catch (const std::bad_variant_access &) {
+      return true;
+    } catch (...) {
+    }
+    return false;
+  };
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    V v;
+    makeEmpty(v);
+    assert(test(v));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using V2 = std::variant<long, std::string, void *>;
+    V v;
+    makeEmpty(v);
+    V2 v2("hello");
+    assert(test(v, v2));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using V2 = std::variant<long, std::string, void *>;
+    V v;
+    makeEmpty(v);
+    V2 v2("hello");
+    assert(test(v2, v));
+  }
+  {
+    using V = std::variant<int, MakeEmptyT>;
+    using V2 = std::variant<long, std::string, void *, MakeEmptyT>;
+    V v;
+    makeEmpty(v);
+    V2 v2;
+    makeEmpty(v2);
+    assert(test(v, v2));
+  }
+  {
+    using V = std::variant<int, long, double, MakeEmptyT>;
+    V v1(42l), v2(101), v3(202), v4(1.1);
+    makeEmpty(v1);
+    assert(test(v1, v2, v3, v4));
+  }
+  {
+    using V = std::variant<int, long, double, long long, MakeEmptyT>;
+    V v1(42l), v2(101), v3(202), v4(1.1);
+    makeEmpty(v1);
+    makeEmpty(v2);
+    makeEmpty(v3);
+    makeEmpty(v4);
+    assert(test(v1, v2, v3, v4));
+  }
+#endif
+}
+
+// See https://bugs.llvm.org/show_bug.cgi?id=31916
+template <typename ReturnType>
+void test_caller_accepts_nonconst() {
+  struct A {};
+  struct Visitor {
+    auto operator()(A&) {
+      if constexpr (!std::is_void_v<ReturnType>)
+      {
+        return ReturnType{};
+      }
+    }
+  };
+  std::variant<A> v;
+  std::visit<ReturnType>(Visitor{}, v);
+}
+
+void test_constexpr_explicit_side_effect() {
+  auto test_lambda = [](int arg) constexpr {
+    std::variant<int> v = 101;
+    std::visit<void>([arg](int& x) constexpr { x = arg; }, v);
+    return std::get<int>(v);
+  };
+
+  static_assert(test_lambda(202) == 202, "");
+}
+
+void test_derived_from_variant() {
+  struct MyVariant : std::variant<short, long, float> {};
+
+  std::visit<bool>(
+      [](auto x) {
+        assert(x == 42);
+        return true;
+      },
+      MyVariant{42});
+  std::visit<bool>(
+      [](auto x) {
+        assert(x == -1.3f);
+        return true;
+      },
+      MyVariant{-1.3f});
+
+  // Check that visit does not take index nor valueless_by_exception members from the base class.
+  struct EvilVariantBase {
+    int index;
+    char valueless_by_exception;
+  };
+
+  struct EvilVariant1 : std::variant<int, long, double>,
+                        std::tuple<int>,
+                        EvilVariantBase {
+    using std::variant<int, long, double>::variant;
+  };
+
+  std::visit<bool>(
+      [](auto x) {
+        assert(x == 12);
+        return true;
+      },
+      EvilVariant1{12});
+  std::visit<bool>(
+      [](auto x) {
+        assert(x == 12.3);
+        return true;
+      },
+      EvilVariant1{12.3});
+
+  // Check that visit unambiguously picks the variant, even if the other base has __impl member.
+  struct ImplVariantBase {
+    struct Callable {
+      bool operator()() const { assert(false); return false; }
+    };
+
+    Callable __impl;
+  };
+
+  struct EvilVariant2 : std::variant<int, long, double>, ImplVariantBase {
+    using std::variant<int, long, double>::variant;
+  };
+
+  std::visit<bool>(
+      [](auto x) {
+        assert(x == 12);
+        return true;
+      },
+      EvilVariant2{12});
+  std::visit<bool>(
+      [](auto x) {
+        assert(x == 12.3);
+        return true;
+      },
+      EvilVariant2{12.3});
+}
+
+struct any_visitor {
+  template <typename T>
+  bool operator()(const T&) {
+    return true;
+  }
+};
+
+template <typename T, typename = decltype(std::visit<bool>(
+                          std::declval<any_visitor&>(), std::declval<T>()))>
+constexpr bool has_visit(int) {
+  return true;
+}
+
+template <typename T>
+constexpr bool has_visit(...) {
+  return false;
+}
+
+void test_sfinae() {
+  struct BadVariant : std::variant<short>, std::variant<long, float> {};
+
+  static_assert(has_visit<std::variant<int> >(int()));
+  static_assert(!has_visit<BadVariant>(int()));
+}
+
+int main(int, char**) {
+  test_call_operator_forwarding<void>();
+  test_argument_forwarding<void>();
+  test_return_type<void>();
+  test_constexpr_void();
+  test_exceptions<void>();
+  test_caller_accepts_nonconst<void>();
+  test_call_operator_forwarding<int>();
+  test_argument_forwarding<int>();
+  test_return_type<int>();
+  test_constexpr_int();
+  test_exceptions<int>();
+  test_caller_accepts_nonconst<int>();
+  test_constexpr_explicit_side_effect();
+  test_derived_from_variant();
+  test_sfinae();
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/Counter.h b/app/src/main/cpp/libcxx/test/support/Counter.h
new file mode 100644
index 0000000..8dbdaeb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/Counter.h
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef COUNTER_H
+#define COUNTER_H
+
+#include <functional> // for std::hash
+
+#include "test_macros.h"
+
+struct Counter_base { static int gConstructed; };
+
+template <typename T>
+class Counter : public Counter_base
+{
+public:
+    Counter() : data_()                             { ++gConstructed; }
+    Counter(const T &data) : data_(data)            { ++gConstructed; }
+    Counter(const Counter& rhs) : data_(rhs.data_)  { ++gConstructed; }
+    Counter& operator=(const Counter& rhs)          { data_ = rhs.data_; return *this; }
+#if TEST_STD_VER >= 11
+    Counter(Counter&& rhs) : data_(std::move(rhs.data_))  { ++gConstructed; }
+    Counter& operator=(Counter&& rhs) { ++gConstructed; data_ = std::move(rhs.data_); return *this; }
+#endif
+    ~Counter() { --gConstructed; }
+
+    const T& get() const {return data_;}
+
+    bool operator==(const Counter& x) const {return data_ == x.data_;}
+    bool operator< (const Counter& x) const {return data_ <  x.data_;}
+
+private:
+    T data_;
+};
+
+int Counter_base::gConstructed = 0;
+
+namespace std {
+
+template <class T>
+struct hash<Counter<T> >
+{
+    typedef Counter<T> argument_type;
+    typedef std::size_t result_type;
+
+    std::size_t operator()(const Counter<T>& x) const {return std::hash<T>()(x.get());}
+};
+}
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/DefaultOnly.h b/app/src/main/cpp/libcxx/test/support/DefaultOnly.h
new file mode 100644
index 0000000..1c99c4f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/DefaultOnly.h
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef DEFAULTONLY_H
+#define DEFAULTONLY_H
+
+#include <cassert>
+
+class DefaultOnly
+{
+    int data_;
+
+    DefaultOnly(const DefaultOnly&);
+    DefaultOnly& operator=(const DefaultOnly&);
+public:
+    static int count;
+
+    DefaultOnly() : data_(-1) {++count;}
+    ~DefaultOnly() {data_ = 0; --count;}
+
+    friend bool operator==(const DefaultOnly& x, const DefaultOnly& y)
+        {return x.data_ == y.data_;}
+    friend bool operator< (const DefaultOnly& x, const DefaultOnly& y)
+        {return x.data_ < y.data_;}
+};
+
+int DefaultOnly::count = 0;
+
+#endif // DEFAULTONLY_H
diff --git a/app/src/main/cpp/libcxx/test/support/MoveOnly.h b/app/src/main/cpp/libcxx/test/support/MoveOnly.h
new file mode 100644
index 0000000..0795cac
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/MoveOnly.h
@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MOVEONLY_H
+#define MOVEONLY_H
+
+#include "test_macros.h"
+
+#include <cstddef>
+#include <functional>
+
+class MoveOnly
+{
+    int data_;
+public:
+    TEST_CONSTEXPR MoveOnly(int data = 1) : data_(data) {}
+
+    MoveOnly(const MoveOnly&) = delete;
+    MoveOnly& operator=(const MoveOnly&) = delete;
+
+    TEST_CONSTEXPR_CXX14 MoveOnly(MoveOnly&& x) TEST_NOEXCEPT
+        : data_(x.data_) {x.data_ = 0;}
+    TEST_CONSTEXPR_CXX14 MoveOnly& operator=(MoveOnly&& x)
+        {data_ = x.data_; x.data_ = 0; return *this;}
+
+    TEST_CONSTEXPR int get() const {return data_;}
+
+    friend TEST_CONSTEXPR bool operator==(const MoveOnly& x, const MoveOnly& y)
+        { return x.data_ == y.data_; }
+    friend TEST_CONSTEXPR bool operator!=(const MoveOnly& x, const MoveOnly& y)
+        { return x.data_ != y.data_; }
+    friend TEST_CONSTEXPR bool operator< (const MoveOnly& x, const MoveOnly& y)
+        { return x.data_ <  y.data_; }
+    friend TEST_CONSTEXPR bool operator<=(const MoveOnly& x, const MoveOnly& y)
+        { return x.data_ <= y.data_; }
+    friend TEST_CONSTEXPR bool operator> (const MoveOnly& x, const MoveOnly& y)
+        { return x.data_ >  y.data_; }
+    friend TEST_CONSTEXPR bool operator>=(const MoveOnly& x, const MoveOnly& y)
+        { return x.data_ >= y.data_; }
+
+#if TEST_STD_VER > 17
+    friend constexpr auto operator<=>(const MoveOnly&, const MoveOnly&) = default;
+#endif // TEST_STD_VER > 17
+
+    TEST_CONSTEXPR_CXX14 MoveOnly operator+(const MoveOnly& x) const
+        { return MoveOnly(data_ + x.data_); }
+    TEST_CONSTEXPR_CXX14 MoveOnly operator*(const MoveOnly& x) const
+        { return MoveOnly(data_ * x.data_); }
+
+    template<class T, class U>
+    friend void operator,(T t, U u) = delete;
+};
+
+
+template <>
+struct std::hash<MoveOnly>
+{
+    typedef MoveOnly argument_type;
+    typedef size_t result_type;
+    TEST_CONSTEXPR size_t operator()(const MoveOnly& x) const {return static_cast<size_t>(x.get());}
+};
+
+#endif // MOVEONLY_H
diff --git a/app/src/main/cpp/libcxx/test/support/allocators.h b/app/src/main/cpp/libcxx/test/support/allocators.h
new file mode 100644
index 0000000..0cdaacb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/allocators.h
@@ -0,0 +1,255 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ALLOCATORS_H
+#define ALLOCATORS_H
+
+#include <memory>
+#include <new>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+
+template <class T>
+class A1
+{
+    int id_;
+public:
+    explicit A1(int id = 0) TEST_NOEXCEPT : id_(id) {}
+
+    typedef T value_type;
+
+    int id() const {return id_;}
+
+    static bool copy_called;
+    static bool move_called;
+    static bool allocate_called;
+    static std::pair<T*, std::size_t> deallocate_called;
+
+    A1(const A1& a) TEST_NOEXCEPT : id_(a.id()) {copy_called = true;}
+    A1(A1&& a)      TEST_NOEXCEPT : id_(a.id()) {move_called = true;}
+    A1& operator=(const A1& a) TEST_NOEXCEPT { id_ = a.id(); copy_called = true; return *this;}
+    A1& operator=(A1&& a)      TEST_NOEXCEPT { id_ = a.id(); move_called = true; return *this;}
+
+    template <class U>
+        A1(const A1<U>& a) TEST_NOEXCEPT : id_(a.id()) {copy_called = true;}
+    template <class U>
+        A1(A1<U>&& a) TEST_NOEXCEPT : id_(a.id()) {move_called = true;}
+
+    T* allocate(std::size_t n)
+    {
+        allocate_called = true;
+        return (T*)n;
+    }
+
+    void deallocate(T* p, std::size_t n)
+    {
+        deallocate_called = std::pair<T*, std::size_t>(p, n);
+    }
+
+    std::size_t max_size() const {return id_;}
+};
+
+template <class T> bool A1<T>::copy_called = false;
+template <class T> bool A1<T>::move_called = false;
+template <class T> bool A1<T>::allocate_called = false;
+template <class T> std::pair<T*, std::size_t> A1<T>::deallocate_called;
+
+template <class T, class U>
+inline
+bool operator==(const A1<T>& x, const A1<U>& y)
+{
+    return x.id() == y.id();
+}
+
+template <class T, class U>
+inline
+bool operator!=(const A1<T>& x, const A1<U>& y)
+{
+    return !(x == y);
+}
+
+template <class T>
+class A2
+{
+    int id_;
+public:
+    explicit A2(int id = 0) TEST_NOEXCEPT : id_(id) {}
+
+    typedef T value_type;
+
+    typedef unsigned size_type;
+    typedef int difference_type;
+
+    typedef std::true_type propagate_on_container_move_assignment;
+
+    int id() const {return id_;}
+
+    static bool copy_called;
+    static bool move_called;
+    static bool allocate_called;
+
+    A2(const A2& a) TEST_NOEXCEPT : id_(a.id()) {copy_called = true;}
+    A2(A2&& a)      TEST_NOEXCEPT : id_(a.id()) {move_called = true;}
+    A2& operator=(const A2& a) TEST_NOEXCEPT { id_ = a.id(); copy_called = true; return *this;}
+    A2& operator=(A2&& a)      TEST_NOEXCEPT { id_ = a.id(); move_called = true; return *this;}
+
+    T* allocate(std::size_t, const void* hint)
+    {
+        allocate_called = true;
+        return (T*) const_cast<void *>(hint);
+    }
+};
+
+template <class T> bool A2<T>::copy_called = false;
+template <class T> bool A2<T>::move_called = false;
+template <class T> bool A2<T>::allocate_called = false;
+
+template <class T, class U>
+inline
+bool operator==(const A2<T>& x, const A2<U>& y)
+{
+    return x.id() == y.id();
+}
+
+template <class T, class U>
+inline
+bool operator!=(const A2<T>& x, const A2<U>& y)
+{
+    return !(x == y);
+}
+
+template <class T>
+class A3
+{
+    int id_;
+public:
+    explicit A3(int id = 0) TEST_NOEXCEPT : id_(id) {}
+
+    typedef T value_type;
+
+    typedef std::true_type propagate_on_container_copy_assignment;
+    typedef std::true_type propagate_on_container_swap;
+
+    int id() const {return id_;}
+
+    static bool copy_called;
+    static bool move_called;
+    static bool constructed;
+    static bool destroy_called;
+
+    A3(const A3& a) TEST_NOEXCEPT : id_(a.id()) {copy_called = true;}
+    A3(A3&& a)      TEST_NOEXCEPT : id_(a.id())  {move_called = true;}
+    A3& operator=(const A3& a) TEST_NOEXCEPT { id_ = a.id(); copy_called = true; return *this;}
+    A3& operator=(A3&& a)      TEST_NOEXCEPT { id_ = a.id(); move_called = true; return *this;}
+
+    template <class U, class ...Args>
+    void construct(U* p, Args&& ...args)
+    {
+        ::new (p) U(std::forward<Args>(args)...);
+        constructed = true;
+    }
+
+    template <class U>
+    void destroy(U* p)
+    {
+        p->~U();
+        destroy_called = true;
+    }
+
+    A3 select_on_container_copy_construction() const {return A3(-1);}
+};
+
+template <class T> bool A3<T>::copy_called = false;
+template <class T> bool A3<T>::move_called = false;
+template <class T> bool A3<T>::constructed = false;
+template <class T> bool A3<T>::destroy_called = false;
+
+template <class T, class U>
+inline
+bool operator==(const A3<T>& x, const A3<U>& y)
+{
+    return x.id() == y.id();
+}
+
+template <class T, class U>
+inline
+bool operator!=(const A3<T>& x, const A3<U>& y)
+{
+    return !(x == y);
+}
+
+template <class T, bool POCCAValue>
+class MaybePOCCAAllocator {
+    int id_ = 0;
+    bool* copy_assigned_into_ = nullptr;
+
+    template<class, bool> friend class MaybePOCCAAllocator;
+
+public:
+    typedef std::integral_constant<bool, POCCAValue> propagate_on_container_copy_assignment;
+    typedef T value_type;
+
+    template <class U>
+    struct rebind {
+        typedef MaybePOCCAAllocator<U, POCCAValue> other;
+    };
+
+    TEST_CONSTEXPR MaybePOCCAAllocator() = default;
+    TEST_CONSTEXPR MaybePOCCAAllocator(int id, bool* copy_assigned_into)
+        : id_(id), copy_assigned_into_(copy_assigned_into) {}
+
+    template <class U>
+    MaybePOCCAAllocator(const MaybePOCCAAllocator<U, POCCAValue>& that)
+        : id_(that.id_), copy_assigned_into_(that.copy_assigned_into_) {}
+
+    MaybePOCCAAllocator(const MaybePOCCAAllocator&) = default;
+    TEST_CONSTEXPR_CXX14 MaybePOCCAAllocator& operator=(const MaybePOCCAAllocator& a)
+    {
+        id_ = a.id();
+        if (copy_assigned_into_)
+            *copy_assigned_into_ = true;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX20 T* allocate(std::size_t n)
+    {
+        return std::allocator<T>().allocate(n);
+    }
+
+    TEST_CONSTEXPR_CXX20 void deallocate(T* ptr, std::size_t n)
+    {
+        std::allocator<T>().deallocate(ptr, n);
+    }
+
+    TEST_CONSTEXPR int id() const { return id_; }
+
+    template <class U>
+    TEST_CONSTEXPR friend bool operator==(const MaybePOCCAAllocator& lhs, const MaybePOCCAAllocator<U, POCCAValue>& rhs)
+    {
+        return lhs.id() == rhs.id();
+    }
+
+    template <class U>
+    TEST_CONSTEXPR friend bool operator!=(const MaybePOCCAAllocator& lhs, const MaybePOCCAAllocator<U, POCCAValue>& rhs)
+    {
+        return !(lhs == rhs);
+    }
+};
+
+template <class T>
+using POCCAAllocator = MaybePOCCAAllocator<T, /*POCCAValue = */true>;
+template <class T>
+using NonPOCCAAllocator = MaybePOCCAAllocator<T, /*POCCAValue = */false>;
+
+#endif // TEST_STD_VER >= 11
+
+#endif // ALLOCATORS_H
diff --git a/app/src/main/cpp/libcxx/test/support/almost_satisfies_types.h b/app/src/main/cpp/libcxx/test/support/almost_satisfies_types.h
new file mode 100644
index 0000000..2a60c22
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/almost_satisfies_types.h
@@ -0,0 +1,403 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ALMOST_SATISFIES_TYPES_H
+#define ALMOST_SATISFIES_TYPES_H
+
+#include <functional>
+#include <iterator>
+#include <ranges>
+
+#include "test_iterators.h"
+
+template <class T, class U = sentinel_wrapper<T>>
+class UncheckedRange {
+public:
+  T begin();
+  U end();
+};
+
+static_assert(std::ranges::contiguous_range<UncheckedRange<int*, int*>>);
+
+// almost an input_iterator
+class InputIteratorNotDerivedFrom {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = void;
+
+  InputIteratorNotDerivedFrom& operator++();
+  void operator++(int);
+  const int& operator*() const;
+};
+
+using InputRangeNotDerivedFrom = UncheckedRange<InputIteratorNotDerivedFrom>;
+
+static_assert(std::input_or_output_iterator<InputIteratorNotDerivedFrom>);
+static_assert(std::indirectly_readable<InputIteratorNotDerivedFrom>);
+static_assert(!std::input_iterator<InputIteratorNotDerivedFrom>);
+static_assert(!std::ranges::input_range<InputRangeNotDerivedFrom>);
+
+class InputIteratorNotIndirectlyReadable {
+public:
+  using difference_type = long;
+  using iterator_category = std::input_iterator_tag;
+
+  InputIteratorNotIndirectlyReadable& operator++();
+  void operator++(int);
+  const int& operator*() const;
+};
+
+using InputRangeNotIndirectlyReadable = UncheckedRange<InputIteratorNotIndirectlyReadable>;
+
+static_assert(std::input_or_output_iterator<InputIteratorNotIndirectlyReadable>);
+static_assert(!std::indirectly_readable<InputIteratorNotIndirectlyReadable>);
+static_assert(!std::input_iterator<InputIteratorNotIndirectlyReadable>);
+static_assert(!std::ranges::input_range<InputIteratorNotIndirectlyReadable>);
+
+class InputIteratorNotInputOrOutputIterator {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::input_iterator_tag;
+
+  int& operator++();
+  void operator++(int);
+  const int& operator*() const;
+};
+
+using InputRangeNotInputOrOutputIterator = UncheckedRange<InputIteratorNotInputOrOutputIterator>;
+
+static_assert(!std::input_or_output_iterator<InputIteratorNotInputOrOutputIterator>);
+static_assert(std::indirectly_readable<InputIteratorNotInputOrOutputIterator>);
+static_assert(!std::input_iterator<InputIteratorNotInputOrOutputIterator>);
+static_assert(!std::ranges::input_range<InputRangeNotInputOrOutputIterator>);
+
+// almost an indirect_unary_predicate
+class IndirectUnaryPredicateNotCopyConstructible {
+public:
+  IndirectUnaryPredicateNotCopyConstructible(const IndirectUnaryPredicateNotCopyConstructible&) = delete;
+  bool operator()(int) const;
+};
+
+static_assert(std::predicate<IndirectUnaryPredicateNotCopyConstructible, int&>);
+static_assert(!std::indirect_unary_predicate<IndirectUnaryPredicateNotCopyConstructible, int*>);
+
+class IndirectUnaryPredicateNotPredicate {
+public:
+  bool operator()(int&&) const;
+};
+
+static_assert(!std::predicate<IndirectUnaryPredicateNotPredicate, int&>);
+static_assert(!std::indirect_unary_predicate<IndirectUnaryPredicateNotPredicate, int*>);
+
+// almost a sentinel_for cpp20_input_iterator
+class SentinelForNotSemiregular {
+public:
+  SentinelForNotSemiregular() = delete;
+  using difference_type = long;
+  SentinelForNotSemiregular& operator++();
+  void operator++(int);
+  const int& operator*() const;
+  friend bool operator==(const SentinelForNotSemiregular&, const cpp20_input_iterator<int*>&);
+};
+
+using InputRangeNotSentinelSemiregular = UncheckedRange<cpp20_input_iterator<int*>, SentinelForNotSemiregular>;
+using OutputRangeNotSentinelSemiregular = UncheckedRange<cpp20_output_iterator<int*>, SentinelForNotSemiregular>;
+
+static_assert(std::input_or_output_iterator<SentinelForNotSemiregular>);
+static_assert(!std::semiregular<SentinelForNotSemiregular>);
+static_assert(!std::sentinel_for<SentinelForNotSemiregular, cpp20_input_iterator<int*>>);
+
+// almost a sentinel_for cpp20_input_iterator
+class SentinelForNotWeaklyEqualityComparableWith {
+public:
+  using difference_type = long;
+  SentinelForNotWeaklyEqualityComparableWith& operator++();
+  void operator++(int);
+  const int& operator*() const;
+};
+
+using InputRangeNotSentinelEqualityComparableWith =
+  UncheckedRange<cpp20_input_iterator<int*>, SentinelForNotWeaklyEqualityComparableWith>;
+using OutputRangeNotSentinelEqualityComparableWith =
+  UncheckedRange<cpp20_output_iterator<int*>, SentinelForNotWeaklyEqualityComparableWith>;
+
+static_assert(std::input_or_output_iterator<SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(std::semiregular<SentinelForNotWeaklyEqualityComparableWith>);
+static_assert(!std::sentinel_for<SentinelForNotWeaklyEqualityComparableWith, cpp20_input_iterator<int*>>);
+
+class WeaklyIncrementableNotMovable {
+public:
+  using difference_type = long;
+  WeaklyIncrementableNotMovable& operator++();
+  void operator++(int);
+  WeaklyIncrementableNotMovable(const WeaklyIncrementableNotMovable&) = delete;
+};
+
+static_assert(!std::movable<WeaklyIncrementableNotMovable>);
+static_assert(!std::weakly_incrementable<WeaklyIncrementableNotMovable>);
+
+// almost a forward_iterator
+class ForwardIteratorNotDerivedFrom {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::input_iterator_tag;
+
+  ForwardIteratorNotDerivedFrom& operator++();
+  ForwardIteratorNotDerivedFrom operator++(int);
+  const int& operator*() const;
+  bool operator==(const ForwardIteratorNotDerivedFrom&) const = default;
+};
+
+using ForwardRangeNotDerivedFrom = UncheckedRange<ForwardIteratorNotDerivedFrom>;
+
+static_assert(std::input_iterator<ForwardIteratorNotDerivedFrom>);
+static_assert(std::incrementable<ForwardIteratorNotDerivedFrom>);
+static_assert(std::sentinel_for<ForwardIteratorNotDerivedFrom, ForwardIteratorNotDerivedFrom>);
+static_assert(!std::forward_iterator<ForwardIteratorNotDerivedFrom>);
+
+class ForwardIteratorNotIncrementable {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::forward_iterator_tag;
+
+  ForwardIteratorNotIncrementable& operator++();
+  int operator++(int);
+  const int& operator*() const;
+  bool operator==(const ForwardIteratorNotIncrementable&) const = default;
+};
+
+using ForwardRangeNotIncrementable = UncheckedRange<ForwardIteratorNotIncrementable>;
+
+static_assert(std::input_iterator<ForwardIteratorNotIncrementable>);
+static_assert(!std::incrementable<ForwardIteratorNotIncrementable>);
+static_assert(std::sentinel_for<ForwardIteratorNotIncrementable, ForwardIteratorNotIncrementable>);
+static_assert(!std::forward_iterator<ForwardIteratorNotIncrementable>);
+
+using ForwardRangeNotSentinelSemiregular = UncheckedRange<forward_iterator<int*>, SentinelForNotSemiregular>;
+using ForwardRangeNotSentinelEqualityComparableWith =
+    UncheckedRange<forward_iterator<int*>, SentinelForNotWeaklyEqualityComparableWith>;
+
+class BidirectionalIteratorNotDerivedFrom {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::forward_iterator_tag;
+
+  BidirectionalIteratorNotDerivedFrom& operator++();
+  BidirectionalIteratorNotDerivedFrom operator++(int);
+  BidirectionalIteratorNotDerivedFrom& operator--();
+  BidirectionalIteratorNotDerivedFrom operator--(int);
+  int& operator*() const;
+
+  bool operator==(const BidirectionalIteratorNotDerivedFrom&) const = default;
+};
+
+using BidirectionalRangeNotDerivedFrom = UncheckedRange<BidirectionalIteratorNotDerivedFrom>;
+using BidirectionalRangeNotSentinelSemiregular =
+    UncheckedRange<bidirectional_iterator<int*>, SentinelForNotSemiregular>;
+using BidirectionalRangeNotSentinelWeaklyEqualityComparableWith =
+    UncheckedRange<bidirectional_iterator<int*>, SentinelForNotWeaklyEqualityComparableWith>;
+
+static_assert(std::forward_iterator<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!std::bidirectional_iterator<BidirectionalIteratorNotDerivedFrom>);
+static_assert(!std::ranges::bidirectional_range<BidirectionalRangeNotDerivedFrom>);
+
+class BidirectionalIteratorNotDecrementable {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::bidirectional_iterator_tag;
+
+  BidirectionalIteratorNotDecrementable& operator++();
+  BidirectionalIteratorNotDecrementable operator++(int);
+  int& operator*() const;
+
+  bool operator==(const BidirectionalIteratorNotDecrementable&) const = default;
+};
+
+using BidirectionalRangeNotDecrementable = UncheckedRange<BidirectionalIteratorNotDecrementable>;
+
+static_assert(std::forward_iterator<BidirectionalIteratorNotDecrementable>);
+static_assert(!std::bidirectional_iterator<BidirectionalIteratorNotDecrementable>);
+static_assert(!std::ranges::bidirectional_range<BidirectionalRangeNotDecrementable>);
+
+class PermutableNotForwardIterator {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::input_iterator_tag;
+
+  PermutableNotForwardIterator& operator++();
+  void operator++(int);
+  int& operator*() const;
+};
+
+using PermutableRangeNotForwardIterator = UncheckedRange<PermutableNotForwardIterator>;
+
+static_assert(std::input_iterator<PermutableNotForwardIterator>);
+static_assert(!std::forward_iterator<PermutableNotForwardIterator>);
+static_assert(!std::permutable<PermutableNotForwardIterator>);
+
+class PermutableNotSwappable {
+public:
+  class NotSwappable {
+    NotSwappable(NotSwappable&&) = delete;
+  };
+
+  using difference_type = long;
+  using value_type = NotSwappable;
+  using iterator_category = std::contiguous_iterator_tag;
+
+  PermutableNotSwappable& operator++();
+  PermutableNotSwappable operator++(int);
+  NotSwappable& operator*() const;
+
+  bool operator==(const PermutableNotSwappable&) const = default;
+};
+
+using PermutableRangeNotSwappable = UncheckedRange<PermutableNotSwappable>;
+
+static_assert(std::input_iterator<PermutableNotSwappable>);
+static_assert(std::forward_iterator<PermutableNotSwappable>);
+static_assert(!std::permutable<PermutableNotSwappable>);
+static_assert(!std::indirectly_swappable<PermutableNotSwappable>);
+
+class OutputIteratorNotInputOrOutputIterator {
+public:
+  using difference_type = long;
+  using value_type = int;
+  using iterator_category = std::input_iterator_tag;
+
+  int& operator++();
+  void operator++(int);
+  int& operator*();
+};
+
+using OutputRangeNotInputOrOutputIterator = UncheckedRange<InputIteratorNotInputOrOutputIterator>;
+
+static_assert(!std::input_or_output_iterator<OutputIteratorNotInputOrOutputIterator>);
+static_assert(std::indirectly_writable<OutputIteratorNotInputOrOutputIterator, int>);
+static_assert(!std::output_iterator<OutputIteratorNotInputOrOutputIterator, int>);
+static_assert(!std::ranges::input_range<OutputRangeNotInputOrOutputIterator>);
+
+class OutputIteratorNotIndirectlyWritable {
+public:
+  using difference_type = long;
+  using iterator_category = std::input_iterator_tag;
+
+  OutputIteratorNotIndirectlyWritable& operator++();
+  void operator++(int);
+  const int& operator*() const;
+};
+
+using OutputRangeNotIndirectlyWritable = UncheckedRange<OutputIteratorNotIndirectlyWritable>;
+
+static_assert(std::input_or_output_iterator<OutputIteratorNotIndirectlyWritable>);
+static_assert(!std::indirectly_writable<OutputIteratorNotIndirectlyWritable, int>);
+static_assert(!std::output_iterator<OutputIteratorNotIndirectlyWritable, int>);
+static_assert(!std::ranges::output_range<OutputIteratorNotIndirectlyWritable, int>);
+
+class IndirectBinaryPredicateNotIndirectlyReadable {
+public:
+  using difference_type = long;
+  using iterator_category = std::input_iterator_tag;
+
+  int& operator++();
+  void operator++(int);
+  const int& operator*() const;
+};
+
+using InputRangeIndirectBinaryPredicateNotIndirectlyReadable
+     = UncheckedRange<cpp20_input_iterator<int*>, IndirectBinaryPredicateNotIndirectlyReadable>;
+
+static_assert(!std::indirect_binary_predicate<std::ranges::equal_to, IndirectBinaryPredicateNotIndirectlyReadable, int*>);
+
+class RandomAccessIteratorNotDerivedFrom {
+  using Self = RandomAccessIteratorNotDerivedFrom;
+
+public:
+  using value_type = int;
+  using difference_type = long;
+  using pointer = int*;
+  using reference = int&;
+  // Deliberately not using the `std::random_access_iterator_tag` category.
+  using iterator_category = std::bidirectional_iterator_tag;
+
+  reference operator*() const;
+  reference operator[](difference_type) const;
+
+  Self& operator++();
+  Self& operator--();
+  Self operator++(int);
+  Self operator--(int);
+
+  Self& operator+=(difference_type);
+  Self& operator-=(difference_type);
+  friend Self operator+(Self, difference_type);
+  friend Self operator+(difference_type, Self);
+  friend Self operator-(Self, difference_type);
+  friend difference_type operator-(Self, Self);
+
+  auto operator<=>(const Self&) const = default;
+};
+
+static_assert(std::bidirectional_iterator<RandomAccessIteratorNotDerivedFrom>);
+static_assert(!std::random_access_iterator<RandomAccessIteratorNotDerivedFrom>);
+
+using RandomAccessRangeNotDerivedFrom = UncheckedRange<RandomAccessIteratorNotDerivedFrom>;
+
+class RandomAccessIteratorBadIndex {
+  using Self = RandomAccessIteratorBadIndex;
+
+public:
+  using value_type = int;
+  using difference_type = long;
+  using pointer = int*;
+  using reference = int&;
+  using iterator_category = std::random_access_iterator_tag;
+
+  reference operator*() const;
+  // Deliberately returning a type different from `reference`.
+  const int& operator[](difference_type) const;
+
+  Self& operator++();
+  Self& operator--();
+  Self operator++(int);
+  Self operator--(int);
+
+  Self& operator+=(difference_type);
+  Self& operator-=(difference_type);
+  friend Self operator+(Self, difference_type);
+  friend Self operator+(difference_type, Self);
+  friend Self operator-(Self, difference_type);
+  friend difference_type operator-(Self, Self);
+
+  auto operator<=>(const Self&) const = default;
+};
+
+static_assert(std::bidirectional_iterator<RandomAccessIteratorBadIndex>);
+static_assert(!std::random_access_iterator<RandomAccessIteratorBadIndex>);
+
+using RandomAccessRangeBadIndex = UncheckedRange<RandomAccessIteratorBadIndex>;
+
+template <class Iter>
+class ComparatorNotCopyable {
+public:
+  ComparatorNotCopyable(ComparatorNotCopyable&&) = default;
+  ComparatorNotCopyable& operator=(ComparatorNotCopyable&&) = default;
+  ComparatorNotCopyable(const ComparatorNotCopyable&) = delete;
+  ComparatorNotCopyable& operator=(const ComparatorNotCopyable&) = delete;
+
+  bool operator()(Iter&, Iter&) const;
+};
+
+#endif // ALMOST_SATISFIES_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/support/any_helpers.h b/app/src/main/cpp/libcxx/test/support/any_helpers.h
new file mode 100644
index 0000000..dae3ca3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/any_helpers.h
@@ -0,0 +1,429 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ANY_HELPERS_H
+#define ANY_HELPERS_H
+
+#include <typeinfo>
+#include <type_traits>
+#include <cassert>
+
+namespace std { namespace experimental {} }
+
+#include "test_macros.h"
+#include "type_id.h"
+
+#if !defined(TEST_HAS_NO_RTTI)
+#define RTTI_ASSERT(X) assert(X)
+#else
+#define RTTI_ASSERT(X)
+#endif
+
+template <class T>
+  struct IsSmallObject
+    : public std::integral_constant<bool
+        , sizeof(T) <= sizeof(std::any) - sizeof(void*)
+          && std::alignment_of<void*>::value
+             % std::alignment_of<T>::value == 0
+          && std::is_nothrow_move_constructible<T>::value
+        >
+  {};
+
+template <class T>
+bool containsType(std::any const& a) {
+#if !defined(TEST_HAS_NO_RTTI)
+    return a.type() == typeid(T);
+#else
+    return a.has_value() && std::any_cast<T>(&a) != nullptr;
+#endif
+}
+
+// Return 'true' if 'Type' will be considered a small type by 'any'
+template <class Type>
+bool isSmallType() {
+    return IsSmallObject<Type>::value;
+}
+
+// Assert that an object is empty. If the object used to contain an object
+// of type 'LastType' check that it can no longer be accessed.
+template <class LastType = int>
+void assertEmpty(std::any const& a) {
+    assert(!a.has_value());
+    RTTI_ASSERT(a.type() == typeid(void));
+    assert(std::any_cast<LastType const>(&a) == nullptr);
+}
+
+template <class Type>
+constexpr auto has_value_member(int) -> decltype(std::declval<Type&>().value, true)
+{ return true; }
+template <class> constexpr bool has_value_member(long) { return false; }
+
+
+// Assert that an 'any' object stores the specified 'Type' and 'value'.
+template <class Type>
+std::enable_if_t<has_value_member<Type>(0)>
+_LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
+assertContains(std::any const& a, int value) {
+    assert(a.has_value());
+    assert(containsType<Type>(a));
+    assert(std::any_cast<Type const &>(a).value == value);
+}
+
+template <class Type, class Value>
+std::enable_if_t<!has_value_member<Type>(0)>
+_LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
+assertContains(std::any const& a, Value value) {
+    assert(a.has_value());
+    assert(containsType<Type>(a));
+    assert(std::any_cast<Type const &>(a) == value);
+}
+
+
+// Modify the value of a "test type" stored within an any to the specified
+// 'value'.
+template <class Type>
+_LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
+void modifyValue(std::any& a, int value) {
+    assert(a.has_value());
+    assert(containsType<Type>(a));
+    std::any_cast<Type&>(a).value = value;
+}
+
+// A test type that will trigger the small object optimization within 'any'.
+template <int Dummy = 0>
+struct small_type
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static int const_copied;
+    static int non_const_copied;
+
+    static void reset() {
+        small_type::copied = 0;
+        small_type::moved = 0;
+        small_type::const_copied = 0;
+        small_type::non_const_copied = 0;
+    }
+
+    int value;
+
+    explicit small_type(int val = 0) : value(val) {
+        ++count;
+    }
+    explicit small_type(int, int val, int) : value(val) {
+        ++count;
+    }
+    small_type(std::initializer_list<int> il) : value(*il.begin()) {
+        ++count;
+    }
+
+    small_type(small_type const & other) noexcept {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++const_copied;
+    }
+
+    small_type(small_type& other) noexcept {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++non_const_copied;
+    }
+
+    small_type(small_type && other) noexcept {
+        value = other.value;
+        other.value = 0;
+        ++count;
+        ++moved;
+    }
+
+    ~small_type() {
+        value = -1;
+        --count;
+    }
+
+private:
+    small_type& operator=(small_type const&) = delete;
+    small_type& operator=(small_type&&) = delete;
+};
+
+template <int Dummy>
+int small_type<Dummy>::count = 0;
+
+template <int Dummy>
+int small_type<Dummy>::copied = 0;
+
+template <int Dummy>
+int small_type<Dummy>::moved = 0;
+
+template <int Dummy>
+int small_type<Dummy>::const_copied = 0;
+
+template <int Dummy>
+int small_type<Dummy>::non_const_copied = 0;
+
+typedef small_type<> small;
+typedef small_type<1> small1;
+typedef small_type<2> small2;
+
+
+// A test type that will NOT trigger the small object optimization in any.
+template <int Dummy = 0>
+struct large_type
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static int const_copied;
+    static int non_const_copied;
+
+    static void reset() {
+        large_type::copied = 0;
+        large_type::moved  = 0;
+        large_type::const_copied = 0;
+        large_type::non_const_copied = 0;
+    }
+
+    int value;
+
+    large_type(int val = 0) : value(val) {
+        ++count;
+        data[0] = 0;
+    }
+    large_type(int, int val, int) : value(val) {
+        ++count;
+        data[0] = 0;
+    }
+    large_type(std::initializer_list<int> il) : value(*il.begin()) {
+        ++count;
+    }
+    large_type(large_type const & other) {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++const_copied;
+    }
+
+    large_type(large_type & other) {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++non_const_copied;
+    }
+
+    large_type(large_type && other) {
+        value = other.value;
+        other.value = 0;
+        ++count;
+        ++moved;
+    }
+
+    ~large_type()  {
+        value = 0;
+        --count;
+    }
+
+private:
+    large_type& operator=(large_type const&) = delete;
+    large_type& operator=(large_type &&) = delete;
+    int data[10];
+};
+
+template <int Dummy>
+int large_type<Dummy>::count = 0;
+
+template <int Dummy>
+int large_type<Dummy>::copied = 0;
+
+template <int Dummy>
+int large_type<Dummy>::moved = 0;
+
+template <int Dummy>
+int large_type<Dummy>::const_copied = 0;
+
+template <int Dummy>
+int large_type<Dummy>::non_const_copied = 0;
+
+typedef large_type<> large;
+typedef large_type<1> large1;
+typedef large_type<2> large2;
+
+// The exception type thrown by 'small_throws_on_copy', 'large_throws_on_copy'
+// and 'throws_on_move'.
+struct my_any_exception {};
+
+void throwMyAnyExpression() {
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+        throw my_any_exception();
+#else
+        assert(false && "Exceptions are disabled");
+#endif
+}
+
+// A test type that will trigger the small object optimization within 'any'.
+// this type throws if it is copied.
+struct small_throws_on_copy
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static void reset() { count = copied = moved = 0; }
+    int value;
+
+    explicit small_throws_on_copy(int val = 0) : value(val) {
+        ++count;
+    }
+    explicit small_throws_on_copy(int, int val, int) : value(val) {
+        ++count;
+    }
+    small_throws_on_copy(small_throws_on_copy const &) {
+        throwMyAnyExpression();
+    }
+
+    small_throws_on_copy(small_throws_on_copy && other) throw() {
+        value = other.value;
+        ++count; ++moved;
+    }
+
+    ~small_throws_on_copy() {
+        --count;
+    }
+private:
+    small_throws_on_copy& operator=(small_throws_on_copy const&) = delete;
+    small_throws_on_copy& operator=(small_throws_on_copy &&) = delete;
+};
+
+int small_throws_on_copy::count = 0;
+int small_throws_on_copy::copied = 0;
+int small_throws_on_copy::moved = 0;
+
+
+// A test type that will NOT trigger the small object optimization within 'any'.
+// this type throws if it is copied.
+struct large_throws_on_copy
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static void reset() { count = copied = moved = 0; }
+    int value = 0;
+
+    explicit large_throws_on_copy(int val = 0) : value(val) {
+        data[0] = 0;
+        ++count;
+    }
+    explicit large_throws_on_copy(int, int val, int) : value(val) {
+        data[0] = 0;
+        ++count;
+    }
+    large_throws_on_copy(large_throws_on_copy const &) {
+         throwMyAnyExpression();
+    }
+
+    large_throws_on_copy(large_throws_on_copy && other) throw() {
+        value = other.value;
+        ++count; ++moved;
+    }
+
+    ~large_throws_on_copy() {
+        --count;
+    }
+
+private:
+    large_throws_on_copy& operator=(large_throws_on_copy const&) = delete;
+    large_throws_on_copy& operator=(large_throws_on_copy &&) = delete;
+    int data[10];
+};
+
+int large_throws_on_copy::count = 0;
+int large_throws_on_copy::copied = 0;
+int large_throws_on_copy::moved = 0;
+
+// A test type that throws when it is moved. This object will NOT trigger
+// the small object optimization in 'any'.
+struct throws_on_move
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static void reset() { count = copied = moved = 0; }
+    int value;
+
+    explicit throws_on_move(int val = 0) : value(val) { ++count; }
+    explicit throws_on_move(int, int val, int) : value(val) { ++count; }
+    throws_on_move(throws_on_move const & other) {
+        value = other.value;
+        ++count; ++copied;
+    }
+
+    throws_on_move(throws_on_move &&) {
+        throwMyAnyExpression();
+    }
+
+    ~throws_on_move() {
+        --count;
+    }
+private:
+    throws_on_move& operator=(throws_on_move const&) = delete;
+    throws_on_move& operator=(throws_on_move &&) = delete;
+};
+
+int throws_on_move::count = 0;
+int throws_on_move::copied = 0;
+int throws_on_move::moved = 0;
+
+struct small_tracked_t {
+  small_tracked_t()
+      : arg_types(&makeArgumentID<>()) {}
+  small_tracked_t(small_tracked_t const&) noexcept
+      : arg_types(&makeArgumentID<small_tracked_t const&>()) {}
+  small_tracked_t(small_tracked_t &&) noexcept
+      : arg_types(&makeArgumentID<small_tracked_t &&>()) {}
+  template <class ...Args>
+  explicit small_tracked_t(Args&&...)
+      : arg_types(&makeArgumentID<Args...>()) {}
+  template <class ...Args>
+  explicit small_tracked_t(std::initializer_list<int>, Args&&...)
+      : arg_types(&makeArgumentID<std::initializer_list<int>, Args...>()) {}
+
+  TypeID const* arg_types;
+};
+static_assert(IsSmallObject<small_tracked_t>::value, "must be small");
+
+struct large_tracked_t {
+  large_tracked_t()
+      : arg_types(&makeArgumentID<>()) { dummy[0] = 42; }
+  large_tracked_t(large_tracked_t const&) noexcept
+      : arg_types(&makeArgumentID<large_tracked_t const&>()) {}
+  large_tracked_t(large_tracked_t &&) noexcept
+      : arg_types(&makeArgumentID<large_tracked_t &&>()) {}
+  template <class ...Args>
+  explicit large_tracked_t(Args&&...)
+      : arg_types(&makeArgumentID<Args...>()) {}
+  template <class ...Args>
+  explicit large_tracked_t(std::initializer_list<int>, Args&&...)
+      : arg_types(&makeArgumentID<std::initializer_list<int>, Args...>()) {}
+
+  TypeID const* arg_types;
+  int dummy[sizeof(std::any) / sizeof(int) + 1];
+};
+
+static_assert(!IsSmallObject<large_tracked_t>::value, "must not be small");
+
+
+template <class Type, class ...Args>
+void assertArgsMatch(std::any const& a) {
+    assert(a.has_value());
+    assert(containsType<Type>(a));
+    assert(std::any_cast<Type const &>(a).arg_types == &makeArgumentID<Args...>());
+};
+
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/archetypes.h b/app/src/main/cpp/libcxx/test/support/archetypes.h
new file mode 100644
index 0000000..53545f6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/archetypes.h
@@ -0,0 +1,402 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_ARCHETYPES_H
+#define TEST_SUPPORT_ARCHETYPES_H
+
+#include <type_traits>
+#include <cassert>
+#include <initializer_list>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+
+#if TEST_STD_VER >= 11
+
+namespace ArchetypeBases {
+
+template <bool, class T>
+struct DepType : T {};
+
+struct NullBase {
+#ifndef TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+protected:
+#endif // !TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+  NullBase() = default;
+  NullBase(NullBase const&) = default;
+  NullBase& operator=(NullBase const&) = default;
+  NullBase(NullBase &&) = default;
+  NullBase& operator=(NullBase &&) = default;
+};
+
+template <class Derived, bool Explicit = false>
+struct TestBase {
+    static int alive;
+    static int constructed;
+    static int value_constructed;
+    static int default_constructed;
+    static int copy_constructed;
+    static int move_constructed;
+    static int assigned;
+    static int value_assigned;
+    static int copy_assigned;
+    static int move_assigned;
+    static int destroyed;
+
+    static void reset() {
+        assert(alive == 0);
+        alive = 0;
+        reset_constructors();
+    }
+
+    static void reset_constructors() {
+      constructed = value_constructed = default_constructed =
+        copy_constructed = move_constructed = 0;
+      assigned = value_assigned = copy_assigned = move_assigned = destroyed = 0;
+    }
+
+    TestBase() noexcept : value(0) {
+        ++alive; ++constructed; ++default_constructed;
+    }
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit TestBase(int x) noexcept : value(x) {
+        ++alive; ++constructed; ++value_constructed;
+    }
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    TestBase(int x) noexcept : value(x) {
+        ++alive; ++constructed; ++value_constructed;
+    }
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit TestBase(int, int y) noexcept : value(y) {
+        ++alive; ++constructed; ++value_constructed;
+    }
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    TestBase(int, int y) noexcept : value(y) {
+        ++alive; ++constructed; ++value_constructed;
+    }
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit TestBase(std::initializer_list<int>& il, int = 0) noexcept
+      : value(static_cast<int>(il.size())) {
+        ++alive; ++constructed; ++value_constructed;
+    }
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    explicit TestBase(std::initializer_list<int>& il, int = 0) noexcept : value(static_cast<int>(il.size())) {
+        ++alive; ++constructed; ++value_constructed;
+    }
+    TestBase& operator=(int xvalue) noexcept {
+      value = xvalue;
+      ++assigned; ++value_assigned;
+      return *this;
+    }
+#ifndef TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+protected:
+#endif // !TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+    ~TestBase() {
+      assert(value != -999); assert(alive > 0);
+      --alive; ++destroyed; value = -999;
+    }
+    explicit TestBase(TestBase const& o) noexcept : value(o.value) {
+        assert(o.value != -1); assert(o.value != -999);
+        ++alive; ++constructed; ++copy_constructed;
+    }
+    explicit TestBase(TestBase && o) noexcept : value(o.value) {
+        assert(o.value != -1); assert(o.value != -999);
+        ++alive; ++constructed; ++move_constructed;
+        o.value = -1;
+    }
+    TestBase& operator=(TestBase const& o) noexcept {
+      assert(o.value != -1); assert(o.value != -999);
+      ++assigned; ++copy_assigned;
+      value = o.value;
+      return *this;
+    }
+    TestBase& operator=(TestBase&& o) noexcept {
+        assert(o.value != -1); assert(o.value != -999);
+        ++assigned; ++move_assigned;
+        value = o.value;
+        o.value = -1;
+        return *this;
+    }
+public:
+    int value;
+};
+
+template <class D, bool E> int TestBase<D, E>::alive = 0;
+template <class D, bool E> int TestBase<D, E>::constructed = 0;
+template <class D, bool E> int TestBase<D, E>::value_constructed = 0;
+template <class D, bool E> int TestBase<D, E>::default_constructed = 0;
+template <class D, bool E> int TestBase<D, E>::copy_constructed = 0;
+template <class D, bool E> int TestBase<D, E>::move_constructed = 0;
+template <class D, bool E> int TestBase<D, E>::assigned = 0;
+template <class D, bool E> int TestBase<D, E>::value_assigned = 0;
+template <class D, bool E> int TestBase<D, E>::copy_assigned = 0;
+template <class D, bool E> int TestBase<D, E>::move_assigned = 0;
+template <class D, bool E> int TestBase<D, E>::destroyed = 0;
+
+template <bool Explicit = false>
+struct ValueBase {
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit constexpr ValueBase(int x) : value(x) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    constexpr ValueBase(int x) : value(x) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit constexpr ValueBase(int, int y) : value(y) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    constexpr ValueBase(int, int y) : value(y) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit constexpr ValueBase(std::initializer_list<int>& il, int = 0) : value(static_cast<int>(il.size())) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    constexpr ValueBase(std::initializer_list<int>& il, int = 0) : value(static_cast<int>(il.size())) {}
+    TEST_CONSTEXPR_CXX14 ValueBase& operator=(int xvalue) noexcept {
+        value = xvalue;
+        return *this;
+    }
+    //~ValueBase() { assert(value != -999); value = -999; }
+    int value;
+#ifndef TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+protected:
+#endif // !TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+    constexpr static int check_value(int const& val) {
+#if TEST_STD_VER < 14
+      return val == -1 || val == 999 ? (TEST_THROW(42), 0) : val;
+#else
+      assert(val != -1); assert(val != 999);
+      return val;
+#endif
+    }
+    constexpr static int check_value(int& val, int val_cp = 0) {
+#if TEST_STD_VER < 14
+      return val_cp = val, val = -1, (val_cp == -1 || val_cp == 999 ? (TEST_THROW(42), 0) : val_cp);
+#else
+      assert(val != -1); assert(val != 999);
+      val_cp = val;
+      val = -1;
+      return val_cp;
+#endif
+    }
+    constexpr ValueBase() noexcept : value(0) {}
+    constexpr ValueBase(ValueBase const& o) noexcept : value(check_value(o.value)) {
+    }
+    constexpr ValueBase(ValueBase && o) noexcept : value(check_value(o.value)) {
+    }
+    TEST_CONSTEXPR_CXX14 ValueBase& operator=(ValueBase const& o) noexcept {
+        assert(o.value != -1); assert(o.value != -999);
+        value = o.value;
+        return *this;
+    }
+    TEST_CONSTEXPR_CXX14 ValueBase& operator=(ValueBase&& o) noexcept {
+        assert(o.value != -1); assert(o.value != -999);
+        value = o.value;
+        o.value = -1;
+        return *this;
+    }
+};
+
+
+template <bool Explicit = false>
+struct TrivialValueBase {
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit constexpr TrivialValueBase(int x) : value(x) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    constexpr TrivialValueBase(int x) : value(x) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit constexpr TrivialValueBase(int, int y) : value(y) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    constexpr TrivialValueBase(int, int y) : value(y) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && Explicit, bool>::type = true>
+    explicit constexpr TrivialValueBase(std::initializer_list<int>& il, int = 0) : value(static_cast<int>(il.size())) {}
+    template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
+    constexpr TrivialValueBase(std::initializer_list<int>& il, int = 0) : value(static_cast<int>(il.size())) {}
+    int value;
+#ifndef TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+protected:
+#endif // !TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+    constexpr TrivialValueBase() noexcept : value(0) {}
+};
+
+}
+
+//============================================================================//
+// Trivial Implicit Test Types
+namespace ImplicitTypes {
+#include "archetypes.ipp"
+}
+
+//============================================================================//
+// Trivial Explicit Test Types
+namespace ExplicitTypes {
+#define DEFINE_EXPLICIT explicit
+#include "archetypes.ipp"
+}
+
+//============================================================================//
+//
+namespace NonConstexprTypes {
+#define DEFINE_CONSTEXPR
+#include "archetypes.ipp"
+}
+
+//============================================================================//
+// Non-literal implicit test types
+namespace NonLiteralTypes {
+#define DEFINE_ASSIGN_CONSTEXPR
+#define DEFINE_DTOR(Name) ~Name() {}
+#include "archetypes.ipp"
+}
+
+//============================================================================//
+// Non-throwing implicit test types
+namespace NonThrowingTypes {
+#define DEFINE_NOEXCEPT noexcept
+#include "archetypes.ipp"
+}
+
+//============================================================================//
+// Non-Trivially Copyable Implicit Test Types
+namespace NonTrivialTypes {
+#define DEFINE_CTOR {}
+#define DEFINE_ASSIGN { return *this; }
+#include "archetypes.ipp"
+}
+
+//============================================================================//
+// Implicit counting types
+namespace TestTypes {
+#define DEFINE_CONSTEXPR
+#define DEFINE_BASE(Name) ::ArchetypeBases::TestBase<Name>
+#include "archetypes.ipp"
+
+using TestType = AllCtors;
+
+// Add equality operators
+template <class Tp>
+constexpr bool operator==(Tp const& L, Tp const& R) noexcept {
+  return L.value == R.value;
+}
+
+template <class Tp>
+constexpr bool operator!=(Tp const& L, Tp const& R) noexcept {
+  return L.value != R.value;
+}
+
+}
+
+//============================================================================//
+// Implicit counting types
+namespace ExplicitTestTypes {
+#define DEFINE_CONSTEXPR
+#define DEFINE_EXPLICIT explicit
+#define DEFINE_BASE(Name) ::ArchetypeBases::TestBase<Name, true>
+#include "archetypes.ipp"
+
+using TestType = AllCtors;
+
+// Add equality operators
+template <class Tp>
+constexpr bool operator==(Tp const& L, Tp const& R) noexcept {
+  return L.value == R.value;
+}
+
+template <class Tp>
+constexpr bool operator!=(Tp const& L, Tp const& R) noexcept {
+  return L.value != R.value;
+}
+
+}
+
+//============================================================================//
+// Implicit value types
+namespace ConstexprTestTypes {
+#define DEFINE_BASE(Name) ::ArchetypeBases::ValueBase<>
+#include "archetypes.ipp"
+
+using TestType = AllCtors;
+
+// Add equality operators
+template <class Tp>
+constexpr bool operator==(Tp const& L, Tp const& R) noexcept {
+  return L.value == R.value;
+}
+
+template <class Tp>
+constexpr bool operator!=(Tp const& L, Tp const& R) noexcept {
+  return L.value != R.value;
+}
+
+} // end namespace ConstexprTestTypes
+
+
+//============================================================================//
+//
+namespace ExplicitConstexprTestTypes {
+#define DEFINE_EXPLICIT explicit
+#define DEFINE_BASE(Name) ::ArchetypeBases::ValueBase<true>
+#include "archetypes.ipp"
+
+using TestType = AllCtors;
+
+// Add equality operators
+template <class Tp>
+constexpr bool operator==(Tp const& L, Tp const& R) noexcept {
+  return L.value == R.value;
+}
+
+template <class Tp>
+constexpr bool operator!=(Tp const& L, Tp const& R) noexcept {
+  return L.value != R.value;
+}
+
+} // end namespace ExplicitConstexprTestTypes
+
+
+//============================================================================//
+//
+namespace TrivialTestTypes {
+#define DEFINE_BASE(Name) ::ArchetypeBases::TrivialValueBase<false>
+#include "archetypes.ipp"
+
+using TestType = AllCtors;
+
+// Add equality operators
+template <class Tp>
+constexpr bool operator==(Tp const& L, Tp const& R) noexcept {
+  return L.value == R.value;
+}
+
+template <class Tp>
+constexpr bool operator!=(Tp const& L, Tp const& R) noexcept {
+  return L.value != R.value;
+}
+
+} // end namespace TrivialTestTypes
+
+//============================================================================//
+//
+namespace ExplicitTrivialTestTypes {
+#define DEFINE_EXPLICIT explicit
+#define DEFINE_BASE(Name) ::ArchetypeBases::TrivialValueBase<true>
+#include "archetypes.ipp"
+
+using TestType = AllCtors;
+
+// Add equality operators
+template <class Tp>
+constexpr bool operator==(Tp const& L, Tp const& R) noexcept {
+  return L.value == R.value;
+}
+
+template <class Tp>
+constexpr bool operator!=(Tp const& L, Tp const& R) noexcept {
+  return L.value != R.value;
+}
+
+} // end namespace ExplicitTrivialTestTypes
+
+#endif // TEST_STD_VER >= 11
+
+#endif // TEST_SUPPORT_ARCHETYPES_H
diff --git a/app/src/main/cpp/libcxx/test/support/archetypes.ipp b/app/src/main/cpp/libcxx/test/support/archetypes.ipp
new file mode 100644
index 0000000..faa5cce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/archetypes.ipp
@@ -0,0 +1,184 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef DEFINE_BASE
+#define DEFINE_BASE(Name) ::ArchetypeBases::NullBase
+#endif
+#ifndef DEFINE_EXPLICIT
+#define DEFINE_EXPLICIT
+#endif
+#ifndef DEFINE_NOEXCEPT
+#define DEFINE_NOEXCEPT
+#endif
+#ifndef DEFINE_CONSTEXPR
+#ifdef TEST_WORKAROUND_EDG_EXPLICIT_CONSTEXPR
+#define DEFINE_CONSTEXPR
+#else // TEST_WORKAROUND_EDG_EXPLICIT_CONSTEXPR
+#define DEFINE_CONSTEXPR constexpr
+#endif // TEST_WORKAROUND_EDG_EXPLICIT_CONSTEXPR
+#endif
+#ifndef DEFINE_ASSIGN_CONSTEXPR
+#if TEST_STD_VER >= 14
+#define DEFINE_ASSIGN_CONSTEXPR DEFINE_CONSTEXPR
+#else
+#define DEFINE_ASSIGN_CONSTEXPR
+#endif
+#endif
+#ifndef DEFINE_CTOR
+#define DEFINE_CTOR = default
+#endif
+#ifndef DEFINE_DEFAULT_CTOR
+#define DEFINE_DEFAULT_CTOR DEFINE_CTOR
+#endif
+#ifndef DEFINE_ASSIGN
+#define DEFINE_ASSIGN = default
+#endif
+#ifndef DEFINE_DTOR
+#define DEFINE_DTOR(Name)
+#endif
+
+struct AllCtors : DEFINE_BASE(AllCtors) {
+  using Base = DEFINE_BASE(AllCtors);
+  using Base::Base;
+  using Base::operator=;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR AllCtors() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR AllCtors(AllCtors const&) DEFINE_NOEXCEPT DEFINE_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR AllCtors(AllCtors &&) DEFINE_NOEXCEPT DEFINE_CTOR;
+  DEFINE_ASSIGN_CONSTEXPR AllCtors& operator=(AllCtors const&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  DEFINE_ASSIGN_CONSTEXPR AllCtors& operator=(AllCtors &&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  DEFINE_DTOR(AllCtors)
+};
+
+struct NoCtors : DEFINE_BASE(NoCtors) {
+  using Base = DEFINE_BASE(NoCtors);
+  DEFINE_EXPLICIT NoCtors() DEFINE_NOEXCEPT = delete;
+  DEFINE_EXPLICIT NoCtors(NoCtors const&) DEFINE_NOEXCEPT = delete;
+  NoCtors& operator=(NoCtors const&) DEFINE_NOEXCEPT = delete;
+  DEFINE_DTOR(NoCtors)
+};
+
+struct NoDefault : DEFINE_BASE(NoDefault) {
+  using Base = DEFINE_BASE(NoDefault);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR NoDefault() DEFINE_NOEXCEPT = delete;
+  DEFINE_DTOR(NoDefault)
+};
+
+struct DefaultOnly : DEFINE_BASE(DefaultOnly) {
+  using Base = DEFINE_BASE(DefaultOnly);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR DefaultOnly() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DefaultOnly(DefaultOnly const&) DEFINE_NOEXCEPT = delete;
+  DefaultOnly& operator=(DefaultOnly const&) DEFINE_NOEXCEPT = delete;
+  DEFINE_DTOR(DefaultOnly)
+};
+
+struct Copyable : DEFINE_BASE(Copyable) {
+  using Base = DEFINE_BASE(Copyable);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR Copyable() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR Copyable(Copyable const &) DEFINE_NOEXCEPT DEFINE_CTOR;
+  Copyable &operator=(Copyable const &) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  DEFINE_DTOR(Copyable)
+};
+
+struct CopyOnly : DEFINE_BASE(CopyOnly) {
+  using Base = DEFINE_BASE(CopyOnly);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR CopyOnly() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR CopyOnly(CopyOnly const &) DEFINE_NOEXCEPT DEFINE_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR CopyOnly(CopyOnly &&) DEFINE_NOEXCEPT = delete;
+  CopyOnly &operator=(CopyOnly const &) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  CopyOnly &operator=(CopyOnly &&) DEFINE_NOEXCEPT = delete;
+  DEFINE_DTOR(CopyOnly)
+};
+
+struct NonCopyable : DEFINE_BASE(NonCopyable) {
+  using Base = DEFINE_BASE(NonCopyable);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR NonCopyable() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR NonCopyable(NonCopyable const &) DEFINE_NOEXCEPT = delete;
+  NonCopyable &operator=(NonCopyable const &) DEFINE_NOEXCEPT = delete;
+  DEFINE_DTOR(NonCopyable)
+};
+
+struct MoveOnly : DEFINE_BASE(MoveOnly) {
+  using Base = DEFINE_BASE(MoveOnly);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR MoveOnly() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR MoveOnly(MoveOnly &&) DEFINE_NOEXCEPT DEFINE_CTOR;
+  MoveOnly &operator=(MoveOnly &&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  DEFINE_DTOR(MoveOnly)
+};
+
+struct CopyAssignable : DEFINE_BASE(CopyAssignable) {
+  using Base = DEFINE_BASE(CopyAssignable);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR CopyAssignable() DEFINE_NOEXCEPT = delete;
+  CopyAssignable& operator=(CopyAssignable const&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  DEFINE_DTOR(CopyAssignable)
+};
+
+struct CopyAssignOnly : DEFINE_BASE(CopyAssignOnly) {
+  using Base = DEFINE_BASE(CopyAssignOnly);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR CopyAssignOnly() DEFINE_NOEXCEPT = delete;
+  CopyAssignOnly& operator=(CopyAssignOnly const&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  CopyAssignOnly& operator=(CopyAssignOnly &&) DEFINE_NOEXCEPT = delete;
+  DEFINE_DTOR(CopyAssignOnly)
+};
+
+struct MoveAssignOnly : DEFINE_BASE(MoveAssignOnly) {
+  using Base = DEFINE_BASE(MoveAssignOnly);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR MoveAssignOnly() DEFINE_NOEXCEPT = delete;
+  MoveAssignOnly& operator=(MoveAssignOnly const&) DEFINE_NOEXCEPT = delete;
+  MoveAssignOnly& operator=(MoveAssignOnly &&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  DEFINE_DTOR(MoveAssignOnly)
+};
+
+struct ConvertingType : DEFINE_BASE(ConvertingType) {
+  using Base = DEFINE_BASE(ConvertingType);
+  using Base::Base;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR ConvertingType() DEFINE_NOEXCEPT DEFINE_DEFAULT_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR ConvertingType(ConvertingType const&) DEFINE_NOEXCEPT DEFINE_CTOR;
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR ConvertingType(ConvertingType &&) DEFINE_NOEXCEPT DEFINE_CTOR;
+  ConvertingType& operator=(ConvertingType const&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  ConvertingType& operator=(ConvertingType &&) DEFINE_NOEXCEPT DEFINE_ASSIGN;
+  template <class ...Args>
+  DEFINE_EXPLICIT DEFINE_CONSTEXPR ConvertingType(Args&&...) DEFINE_NOEXCEPT {}
+  template <class Arg>
+  ConvertingType& operator=(Arg&&) DEFINE_NOEXCEPT { return *this; }
+  DEFINE_DTOR(ConvertingType)
+};
+
+template <template <class...> class List>
+using ApplyTypes = List<
+    AllCtors,
+    NoCtors,
+    NoDefault,
+    DefaultOnly,
+    Copyable,
+    CopyOnly,
+    NonCopyable,
+    MoveOnly,
+    CopyAssignable,
+    CopyAssignOnly,
+    MoveAssignOnly,
+    ConvertingType
+  >;
+
+#undef DEFINE_BASE
+#undef DEFINE_EXPLICIT
+#undef DEFINE_NOEXCEPT
+#undef DEFINE_CONSTEXPR
+#undef DEFINE_ASSIGN_CONSTEXPR
+#undef DEFINE_CTOR
+#undef DEFINE_DEFAULT_CTOR
+#undef DEFINE_ASSIGN
+#undef DEFINE_DTOR
diff --git a/app/src/main/cpp/libcxx/test/support/asan_testing.h b/app/src/main/cpp/libcxx/test/support/asan_testing.h
new file mode 100644
index 0000000..aae9301
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/asan_testing.h
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ASAN_TESTING_H
+#define ASAN_TESTING_H
+
+#include "test_macros.h"
+
+#if TEST_HAS_FEATURE(address_sanitizer)
+extern "C" int __sanitizer_verify_contiguous_container
+     ( const void *beg, const void *mid, const void *end );
+
+template <typename T, typename Alloc>
+TEST_CONSTEXPR bool is_contiguous_container_asan_correct ( const std::vector<T, Alloc> &c )
+{
+    if (std::__libcpp_is_constant_evaluated())
+        return true;
+    if (std::is_same<Alloc, std::allocator<T> >::value && c.data() != NULL)
+        return __sanitizer_verify_contiguous_container(
+            c.data(), c.data() + c.size(), c.data() + c.capacity()) != 0;
+    return true;
+}
+
+#else
+template <typename T, typename Alloc>
+TEST_CONSTEXPR bool is_contiguous_container_asan_correct ( const std::vector<T, Alloc> &)
+{
+    return true;
+}
+#endif
+
+
+#endif // ASAN_TESTING_H
diff --git a/app/src/main/cpp/libcxx/test/support/assert_macros.h b/app/src/main/cpp/libcxx/test/support/assert_macros.h
new file mode 100644
index 0000000..5d5d810
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/assert_macros.h
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_ASSERT_MACROS_H
+#define TEST_SUPPORT_ASSERT_MACROS_H
+
+// Contains a set of validation macros.
+//
+// Note these test were added after C++20 was well supported by the compilers
+// used. To make the implementation simple the macros require C++20 or newer.
+// It's not expected that existing tests start to use these new macros.
+//
+// These macros are an alternative to using assert. The differences are:
+// - The assert message isn't localized.
+// - It's possible to log additional information. This is useful when the
+//   function asserting is a helper function. In these cases the assertion
+//   failure contains to little information to find the issue. For example, in
+//   the format functions, the really useful information is the actual output,
+//   the expected output, and the format string used. These macros allow
+//   logging additional arguments.
+
+#include "test_macros.h"
+
+#include <cstdio>
+#include <cstdlib>
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <sstream>
+#endif
+
+#if TEST_STD_VER > 17
+
+#  ifndef TEST_HAS_NO_LOCALIZATION
+template <class T>
+concept test_char_streamable = requires(T&& value) { std::stringstream{} << std::forward<T>(value); };
+#  endif
+
+// If possible concatenates message for the assertion function, else returns a
+// default message. Not being able to stream is not considered and error. For
+// example, streaming to std::wcerr doesn't work properly in the CI. Therefore
+// the formatting tests should only stream to std::string_string.
+template <class... Args>
+std::string test_concat_message([[maybe_unused]] Args&&... args) {
+#  ifndef TEST_HAS_NO_LOCALIZATION
+  if constexpr ((test_char_streamable<Args> && ...)) {
+    std::stringstream sstr;
+    ((sstr << std::forward<Args>(args)), ...);
+    return sstr.str();
+  } else
+#  endif
+    return "Message discarded since it can't be streamed to std::cerr.\n";
+}
+
+#endif // TEST_STD_VER > 17
+
+// Logs the error and calls exit.
+//
+// It shows a generic assert like message including a custom message. This
+// message should end with a newline.
+[[noreturn]] void test_log_error(const char* condition, const char* file, int line, std::string&& message) {
+  const char* msg = condition ? "Assertion failure: " : "Unconditional failure:";
+  std::fprintf(stderr, "%s%s %s %d\n%s", msg, condition, file, line, message.c_str());
+  exit(EXIT_FAILURE);
+}
+
+inline void test_fail(const char* file, int line, std::string&& message) {
+  test_log_error("", file, line, std::move(message));
+}
+
+inline void test_require(bool condition, const char* condition_str, const char* file, int line, std::string&& message) {
+  if (condition)
+    return;
+
+  test_log_error(condition_str, file, line, std::move(message));
+}
+
+inline void test_libcpp_require(
+    [[maybe_unused]] bool condition,
+    [[maybe_unused]] const char* condition_str,
+    [[maybe_unused]] const char* file,
+    [[maybe_unused]] int line,
+    [[maybe_unused]] std::string&& message) {
+#if defined(_LIBCPP_VERSION)
+  test_require(condition, condition_str, file, line, std::move(message));
+#endif
+}
+
+// assert(false) replacement
+#define TEST_FAIL(MSG) ::test_fail(__FILE__, __LINE__, MSG)
+
+// assert replacement.
+#define TEST_REQUIRE(CONDITION, MSG) ::test_require(CONDITION, #CONDITION, __FILE__, __LINE__, MSG)
+
+// LIBCPP_ASSERT replacement
+//
+// This requirement is only tested when the test suite is used for libc++.
+// This allows checking libc++ specific requirements, for example the error
+// messages of exceptions.
+#define TEST_LIBCPP_REQUIRE(CONDITION, MSG) ::test_libcpp_require(CONDITION, #CONDITION, __FILE__, __LINE__, MSG)
+
+#endif // TEST_SUPPORT_ASSERT_MACROS_H
diff --git a/app/src/main/cpp/libcxx/test/support/atomic_helpers.h b/app/src/main/cpp/libcxx/test/support/atomic_helpers.h
new file mode 100644
index 0000000..dc38b7b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/atomic_helpers.h
@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ATOMIC_HELPERS_H
+#define ATOMIC_HELPERS_H
+
+#include <cassert>
+
+#include "test_macros.h"
+
+struct UserAtomicType {
+  int i;
+
+  explicit UserAtomicType(int d = 0) TEST_NOEXCEPT : i(d) {}
+
+  friend bool operator==(const UserAtomicType& x, const UserAtomicType& y) { return x.i == y.i; }
+};
+
+/*
+
+Enable these once we have P0528
+
+struct WeirdUserAtomicType
+{
+    char i, j, k; // the 3 chars of doom
+
+    explicit WeirdUserAtomicType(int d = 0) TEST_NOEXCEPT : i(d) {}
+
+    friend bool operator==(const WeirdUserAtomicType& x, const WeirdUserAtomicType& y)
+    { return x.i == y.i; }
+};
+
+struct PaddedUserAtomicType
+{
+    char i; int j; // probably lock-free?
+
+    explicit PaddedUserAtomicType(int d = 0) TEST_NOEXCEPT : i(d) {}
+
+    friend bool operator==(const PaddedUserAtomicType& x, const PaddedUserAtomicType& y)
+    { return x.i == y.i; }
+};
+
+*/
+
+struct LargeUserAtomicType {
+  int a[128]; /* decidedly not lock-free */
+
+  LargeUserAtomicType(int d = 0) TEST_NOEXCEPT {
+    for (auto&& e : a)
+      e = d++;
+  }
+
+  friend bool operator==(LargeUserAtomicType const& x, LargeUserAtomicType const& y) TEST_NOEXCEPT {
+    for (int i = 0; i < 128; ++i)
+      if (x.a[i] != y.a[i])
+        return false;
+    return true;
+  }
+};
+
+template <template <class TestArg> class TestFunctor>
+struct TestEachIntegralType {
+  void operator()() const {
+    TestFunctor<char>()();
+    TestFunctor<signed char>()();
+    TestFunctor<unsigned char>()();
+    TestFunctor<short>()();
+    TestFunctor<unsigned short>()();
+    TestFunctor<int>()();
+    TestFunctor<unsigned int>()();
+    TestFunctor<long>()();
+    TestFunctor<unsigned long>()();
+    TestFunctor<long long>()();
+    TestFunctor<unsigned long long>()();
+    TestFunctor<wchar_t>()();
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+    TestFunctor<char8_t>()();
+#endif
+    TestFunctor<char16_t>()();
+    TestFunctor<char32_t>()();
+    TestFunctor<int8_t>()();
+    TestFunctor<uint8_t>()();
+    TestFunctor<int16_t>()();
+    TestFunctor<uint16_t>()();
+    TestFunctor<int32_t>()();
+    TestFunctor<uint32_t>()();
+    TestFunctor<int64_t>()();
+    TestFunctor<uint64_t>()();
+  }
+};
+
+template <template <class TestArg> class TestFunctor>
+struct TestEachFloatingPointType {
+  void operator()() const {
+    TestFunctor<float>()();
+    TestFunctor<double>()();
+    TestFunctor<long double>()();
+  }
+};
+
+template <template <class TestArg> class TestFunctor>
+struct TestEachPointerType {
+  void operator()() const {
+    TestFunctor<int*>()();
+    TestFunctor<const int*>()();
+  }
+};
+
+template <template <class TestArg> class TestFunctor>
+struct TestEachAtomicType {
+  void operator()() const {
+    TestEachIntegralType<TestFunctor>()();
+    TestFunctor<UserAtomicType>()();
+    /*
+            Note: These aren't going to be lock-free,
+            so some libatomic.a is necessary. To handle
+            the case where the support functions are
+            missing, all tests that use this file should add:
+            XFAIL: !non-lockfree-atomics
+        */
+    TestFunctor<LargeUserAtomicType>()();
+    /*
+    Enable these once we have P0528
+
+        TestFunctor<PaddedUserAtomicType>()();
+        TestFunctor<WeirdUserAtomicType>()();
+*/
+    TestFunctor<int*>()();
+    TestFunctor<const int*>()();
+    TestFunctor<float>()();
+    TestFunctor<double>()();
+  }
+};
+
+#endif // ATOMIC_HELPERS_H
diff --git a/app/src/main/cpp/libcxx/test/support/boolean_testable.h b/app/src/main/cpp/libcxx/test/support/boolean_testable.h
new file mode 100644
index 0000000..e810e4e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/boolean_testable.h
@@ -0,0 +1,63 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_SUPPORT_BOOLEAN_TESTABLE_H
+#define LIBCXX_TEST_SUPPORT_BOOLEAN_TESTABLE_H
+
+#include "test_macros.h"
+
+#if TEST_STD_VER > 17
+
+class BooleanTestable {
+public:
+  constexpr operator bool() const {
+    return value_;
+  }
+
+  friend constexpr BooleanTestable operator==(const BooleanTestable& lhs, const BooleanTestable& rhs) {
+    return lhs.value_ == rhs.value_;
+  }
+
+  friend constexpr BooleanTestable operator!=(const BooleanTestable& lhs, const BooleanTestable& rhs) {
+    return !(lhs == rhs);
+  }
+
+  constexpr BooleanTestable operator!() {
+    return BooleanTestable{!value_};
+  }
+
+  // this class should behave like a bool, so the constructor shouldn't be explicit
+  constexpr BooleanTestable(bool value) : value_{value} {}
+  constexpr BooleanTestable(const BooleanTestable&) = delete;
+  constexpr BooleanTestable(BooleanTestable&&) = delete;
+
+private:
+  bool value_;
+};
+
+template <class T>
+class StrictComparable {
+public:
+  // this shouldn't be explicit to make it easier to initlaize inside arrays (which it almost always is)
+  constexpr StrictComparable(T value) : value_{value} {}
+
+  friend constexpr BooleanTestable operator==(const StrictComparable& lhs, const StrictComparable& rhs) {
+    return (lhs.value_ == rhs.value_);
+  }
+
+  friend constexpr BooleanTestable operator!=(const StrictComparable& lhs, const StrictComparable& rhs) {
+    return !(lhs == rhs);
+  }
+
+private:
+  T value_;
+};
+
+#endif // TEST_STD_VER > 17
+
+#endif // LIBCXX_TEST_SUPPORT_BOOLEAN_TESTABLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/callable_types.h b/app/src/main/cpp/libcxx/test/support/callable_types.h
new file mode 100644
index 0000000..1e0e5d9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/callable_types.h
@@ -0,0 +1,186 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_CALLABLE_TYPES_H
+#define TEST_CALLABLE_TYPES_H
+
+#include "test_macros.h"
+#include "type_id.h"
+
+///////////////////////////////////////////////////////////////////////////////
+//                       CALLABLE TEST TYPES
+///////////////////////////////////////////////////////////////////////////////
+
+constexpr bool returns_true() { return true; }
+
+template <class Ret>
+struct MoveOnlyCallable {
+  MoveOnlyCallable(MoveOnlyCallable const&) = delete;
+  constexpr MoveOnlyCallable(MoveOnlyCallable&& other)
+      : value(other.value)
+  { other.value = !other.value; }
+
+  template <class ...Args>
+  constexpr Ret operator()(Args&&...) { return Ret{value}; }
+
+  constexpr explicit MoveOnlyCallable(bool x) : value(x) {}
+  Ret value;
+};
+
+template <class Ret>
+struct CopyCallable {
+  constexpr CopyCallable(CopyCallable const& other)
+      : value(other.value) {}
+
+  constexpr CopyCallable(CopyCallable&& other)
+      : value(other.value) { other.value = !other.value; }
+
+  template <class ...Args>
+  constexpr Ret operator()(Args&&...) { return Ret{value}; }
+
+  constexpr explicit CopyCallable(bool x) : value(x)  {}
+  Ret value;
+};
+
+
+template <class Ret>
+struct ConstCallable {
+  constexpr ConstCallable(ConstCallable const& other)
+      : value(other.value) {}
+
+  constexpr ConstCallable(ConstCallable&& other)
+      : value(other.value) { other.value = !other.value; }
+
+  template <class ...Args>
+  constexpr Ret operator()(Args&&...) const { return Ret{value}; }
+
+  constexpr explicit ConstCallable(bool x) : value(x)  {}
+  Ret value;
+};
+
+
+
+template <class Ret>
+struct NoExceptCallable {
+  constexpr NoExceptCallable(NoExceptCallable const& other)
+      : value(other.value) {}
+
+  template <class ...Args>
+  constexpr Ret operator()(Args&&...) noexcept { return Ret{value}; }
+
+  template <class ...Args>
+  constexpr Ret operator()(Args&&...) const noexcept { return Ret{value}; }
+
+  constexpr explicit NoExceptCallable(bool x) : value(x)  {}
+  Ret value;
+};
+
+struct CopyAssignableWrapper {
+  constexpr CopyAssignableWrapper(CopyAssignableWrapper const&) = default;
+  constexpr CopyAssignableWrapper(CopyAssignableWrapper&&) = default;
+  constexpr CopyAssignableWrapper& operator=(CopyAssignableWrapper const&) = default;
+  constexpr CopyAssignableWrapper& operator=(CopyAssignableWrapper &&) = default;
+
+  template <class ...Args>
+  constexpr bool operator()(Args&&...) { return value; }
+
+  constexpr explicit CopyAssignableWrapper(bool x) : value(x) {}
+  bool value;
+};
+
+
+struct MoveAssignableWrapper {
+  constexpr MoveAssignableWrapper(MoveAssignableWrapper const&) = delete;
+  constexpr MoveAssignableWrapper(MoveAssignableWrapper&&) = default;
+  constexpr MoveAssignableWrapper& operator=(MoveAssignableWrapper const&) = delete;
+  constexpr MoveAssignableWrapper& operator=(MoveAssignableWrapper &&) = default;
+
+  template <class ...Args>
+  constexpr bool operator()(Args&&...) { return value; }
+
+  constexpr explicit MoveAssignableWrapper(bool x) : value(x) {}
+  bool value;
+};
+
+struct MemFunCallable {
+  constexpr explicit MemFunCallable(bool x) : value(x) {}
+
+  constexpr bool return_value() const { return value; }
+  constexpr bool return_value_nc() { return value; }
+  bool value;
+};
+
+enum CallType : unsigned {
+  CT_None,
+  CT_NonConst = 1,
+  CT_Const = 2,
+  CT_LValue = 4,
+  CT_RValue = 8
+};
+
+inline constexpr CallType operator|(CallType LHS, CallType RHS) {
+    return static_cast<CallType>(static_cast<unsigned>(LHS) | static_cast<unsigned>(RHS));
+}
+
+struct ForwardingCallObject {
+  struct State {
+    CallType      last_call_type = CT_None;
+    TypeID const& (*last_call_args)() = nullptr;
+
+    template <class ...Args>
+    constexpr void set_call(CallType type) {
+      assert(last_call_type == CT_None);
+      assert(last_call_args == nullptr);
+      last_call_type = type;
+      last_call_args = &makeArgumentID<Args...>;
+    }
+
+    template <class ...Args>
+    constexpr bool check_call(CallType type) {
+      bool result =
+           last_call_type == type
+        && last_call_args
+        && *last_call_args == &makeArgumentID<Args...>;
+      last_call_type = CT_None;
+      last_call_args = nullptr;
+      return result;
+    }
+  };
+
+  State *st_;
+
+  explicit constexpr ForwardingCallObject(State& st) : st_(&st) {}
+
+  template <class ...Args>
+  constexpr bool operator()(Args&&...) & {
+      st_->set_call<Args&&...>(CT_NonConst | CT_LValue);
+      return true;
+  }
+
+  template <class ...Args>
+  constexpr bool operator()(Args&&...) const & {
+      st_->set_call<Args&&...>(CT_Const | CT_LValue);
+      return true;
+  }
+
+  // Don't allow the call operator to be invoked as an rvalue.
+  template <class ...Args>
+  constexpr bool operator()(Args&&...) && {
+      st_->set_call<Args&&...>(CT_NonConst | CT_RValue);
+      return true;
+  }
+
+  template <class ...Args>
+  constexpr bool operator()(Args&&...) const && {
+      st_->set_call<Args&&...>(CT_Const | CT_RValue);
+      return true;
+  }
+};
+
+
+#endif // TEST_CALLABLE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/support/charconv_test_helpers.h b/app/src/main/cpp/libcxx/test/support/charconv_test_helpers.h
new file mode 100644
index 0000000..1ba95e7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/charconv_test_helpers.h
@@ -0,0 +1,325 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_CHARCONV_TEST_HELPERS_H
+#define SUPPORT_CHARCONV_TEST_HELPERS_H
+
+#include <algorithm>
+#include <charconv>
+#include <cassert>
+#include <limits>
+#include <numeric>
+#include <string.h>
+#include <stdlib.h>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER < 11
+#error This file requires C++11
+#endif
+
+using std::false_type;
+using std::true_type;
+
+template <typename To, typename From>
+constexpr auto
+is_non_narrowing(From a) -> decltype(To{a}, true_type())
+{
+    return {};
+}
+
+template <typename To>
+constexpr auto
+is_non_narrowing(...) -> false_type
+{
+    return {};
+}
+
+template <typename X, typename T>
+constexpr bool
+_fits_in(T, true_type /* non-narrowing*/, ...)
+{
+    return true;
+}
+
+template <typename X, typename T, typename xl = std::numeric_limits<X>>
+constexpr bool
+_fits_in(T v, false_type, true_type /* T signed*/, true_type /* X signed */)
+{
+    return xl::lowest() <= v && v <= (xl::max)();
+}
+
+template <typename X, typename T, typename xl = std::numeric_limits<X>>
+constexpr bool
+_fits_in(T v, false_type, true_type /* T signed */, false_type /* X unsigned*/)
+{
+    return 0 <= v && typename std::make_unsigned<T>::type(v) <= (xl::max)();
+}
+
+template <typename X, typename T, typename xl = std::numeric_limits<X>>
+constexpr bool
+_fits_in(T v, false_type, false_type /* T unsigned */, ...)
+{
+    return v <= typename std::make_unsigned<X>::type((xl::max)());
+}
+
+template <typename X, typename T>
+constexpr bool
+fits_in(T v)
+{
+  return _fits_in<X>(v, is_non_narrowing<X>(v), std::is_signed<T>(), std::is_signed<X>());
+}
+
+template <typename X>
+struct to_chars_test_base
+{
+    template <typename T, size_t N, typename... Ts>
+    TEST_CONSTEXPR_CXX23 void test(T v, char const (&expect)[N], Ts... args)
+    {
+        std::to_chars_result r;
+
+        constexpr size_t len = N - 1;
+        static_assert(len > 0, "expected output won't be empty");
+
+        if (!fits_in<X>(v))
+            return;
+
+        r = std::to_chars(buf, buf + len - 1, X(v), args...);
+        assert(r.ptr == buf + len - 1);
+        assert(r.ec == std::errc::value_too_large);
+
+        r = std::to_chars(buf, buf + sizeof(buf), X(v), args...);
+        assert(r.ptr == buf + len);
+        assert(r.ec == std::errc{});
+        assert(std::equal(buf, buf + len, expect));
+    }
+
+    template <typename... Ts>
+    TEST_CONSTEXPR_CXX23 void test_value(X v, Ts... args)
+    {
+        std::to_chars_result r;
+
+        // Poison the buffer for testing whether a successful std::to_chars
+        // doesn't modify data beyond r.ptr. Use unsigned values to avoid
+        // overflowing char when it's signed.
+        std::iota(buf, buf + sizeof(buf), static_cast<unsigned char>(1));
+        r = std::to_chars(buf, buf + sizeof(buf), v, args...);
+        assert(r.ec == std::errc{});
+        for (size_t i = r.ptr - buf; i < sizeof(buf); ++i)
+            assert(static_cast<unsigned char>(buf[i]) == i + 1);
+        *r.ptr = '\0';
+
+#ifndef TEST_HAS_NO_INT128
+        if (sizeof(X) == sizeof(__int128_t)) {
+            auto a = fromchars128_impl(buf, r.ptr, args...);
+            assert(v == a);
+        } else
+#endif
+        {
+            auto a = fromchars_impl(buf, r.ptr, args...);
+            assert(v == a);
+        }
+
+        auto ep = r.ptr - 1;
+        r = std::to_chars(buf, ep, v, args...);
+        assert(r.ptr == ep);
+        assert(r.ec == std::errc::value_too_large);
+    }
+
+private:
+    static TEST_CONSTEXPR_CXX23 long long fromchars_impl(char const* p, char const* ep, int base, true_type)
+    {
+        char* last;
+        long long r;
+        if (TEST_IS_CONSTANT_EVALUATED)
+          last = const_cast<char*>(std::from_chars(p, ep, r, base).ptr);
+        else
+          r = strtoll(p, &last, base);
+        assert(last == ep);
+
+        return r;
+    }
+
+    static TEST_CONSTEXPR_CXX23 unsigned long long fromchars_impl(char const* p, char const* ep, int base, false_type)
+    {
+        char* last;
+        unsigned long long r;
+        if (TEST_IS_CONSTANT_EVALUATED)
+          last = const_cast<char*>(std::from_chars(p, ep, r, base).ptr);
+        else
+          r = strtoull(p, &last, base);
+        assert(last == ep);
+
+        return r;
+    }
+#ifndef TEST_HAS_NO_INT128
+    static TEST_CONSTEXPR_CXX23 __int128_t fromchars128_impl(char const* p, char const* ep, int base, true_type)
+    {
+        if (!TEST_IS_CONSTANT_EVALUATED) {
+            char* last;
+            __int128_t r = strtoll(p, &last, base);
+            if(errno != ERANGE) {
+                assert(last == ep);
+                return r;
+            }
+        }
+
+        // When the value doesn't fit in a long long use from_chars. This is
+        // not ideal since it does a round-trip test instead if using an
+        // external source.
+        __int128_t r;
+        std::from_chars_result s = std::from_chars(p, ep, r, base);
+        assert(s.ec == std::errc{});
+        assert(s.ptr == ep);
+
+        return r;
+    }
+
+    static TEST_CONSTEXPR_CXX23 __uint128_t fromchars128_impl(char const* p, char const* ep, int base, false_type)
+    {
+        if (!TEST_IS_CONSTANT_EVALUATED) {
+            char* last;
+            __uint128_t r = strtoull(p, &last, base);
+            if(errno != ERANGE) {
+                assert(last == ep);
+                return r;
+            }
+        }
+
+        __uint128_t r;
+        std::from_chars_result s = std::from_chars(p, ep, r, base);
+        assert(s.ec == std::errc{});
+        assert(s.ptr == ep);
+
+        return r;
+    }
+
+    static TEST_CONSTEXPR_CXX23 auto fromchars128_impl(char const* p, char const* ep, int base = 10)
+    -> decltype(fromchars128_impl(p, ep, base, std::is_signed<X>()))
+    {
+        return fromchars128_impl(p, ep, base, std::is_signed<X>());
+    }
+
+#endif
+
+    static TEST_CONSTEXPR_CXX23 auto fromchars_impl(char const* p, char const* ep, int base = 10)
+    -> decltype(fromchars_impl(p, ep, base, std::is_signed<X>()))
+    {
+        return fromchars_impl(p, ep, base, std::is_signed<X>());
+    }
+
+    char buf[150];
+};
+
+template <typename X>
+struct roundtrip_test_base
+{
+    template <typename T, typename... Ts>
+    TEST_CONSTEXPR_CXX23 void test(T v, Ts... args)
+    {
+        std::from_chars_result r2;
+        std::to_chars_result r;
+        X x = 0xc;
+
+        if (fits_in<X>(v))
+        {
+            r = std::to_chars(buf, buf + sizeof(buf), v, args...);
+            assert(r.ec == std::errc{});
+
+            r2 = std::from_chars(buf, r.ptr, x, args...);
+            assert(r2.ptr == r.ptr);
+            assert(x == X(v));
+        }
+        else
+        {
+            r = std::to_chars(buf, buf + sizeof(buf), v, args...);
+            assert(r.ec == std::errc{});
+
+            r2 = std::from_chars(buf, r.ptr, x, args...);
+
+            TEST_DIAGNOSTIC_PUSH
+            TEST_MSVC_DIAGNOSTIC_IGNORED(4127) // conditional expression is constant
+
+            if (std::is_signed<T>::value && v < 0 && std::is_unsigned<X>::value)
+            {
+                assert(x == 0xc);
+                assert(r2.ptr == buf);
+                assert(r2.ec == std::errc::invalid_argument);
+            }
+            else
+            {
+                assert(x == 0xc);
+                assert(r2.ptr == r.ptr);
+                assert(r2.ec == std::errc::result_out_of_range);
+            }
+
+            TEST_DIAGNOSTIC_POP
+        }
+    }
+
+private:
+    char buf[150];
+};
+
+template <typename... T>
+struct type_list
+{
+};
+
+template <typename L1, typename L2>
+struct type_concat;
+
+template <typename... Xs, typename... Ys>
+struct type_concat<type_list<Xs...>, type_list<Ys...>>
+{
+    using type = type_list<Xs..., Ys...>;
+};
+
+template <typename L1, typename L2>
+using concat_t = typename type_concat<L1, L2>::type;
+
+template <typename L1, typename L2>
+constexpr auto concat(L1, L2) -> concat_t<L1, L2>
+{
+    return {};
+}
+
+auto all_signed = type_list<
+    char,
+    signed char,
+    short,
+    int,
+    long,
+    long long
+#ifndef TEST_HAS_NO_INT128
+    ,
+    __int128_t
+#endif
+    >();
+auto all_unsigned = type_list<
+    unsigned char,
+    unsigned short,
+    unsigned int,
+    unsigned long,
+    unsigned long long
+#ifndef TEST_HAS_NO_INT128
+    ,
+    __uint128_t
+#endif
+    >();
+auto integrals = concat(all_signed, all_unsigned);
+
+template <template <typename> class Fn, typename... Ts>
+TEST_CONSTEXPR_CXX23 void
+run(type_list<Ts...>)
+{
+    int ls[sizeof...(Ts)] = {(Fn<Ts>{}(), 0)...};
+    (void)ls;
+}
+
+#endif // SUPPORT_CHARCONV_TEST_HELPERS_H
diff --git a/app/src/main/cpp/libcxx/test/support/check_assertion.h b/app/src/main/cpp/libcxx/test/support/check_assertion.h
new file mode 100644
index 0000000..2d1f7b8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/check_assertion.h
@@ -0,0 +1,302 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_CHECK_ASSERTION_H
+#define TEST_SUPPORT_CHECK_ASSERTION_H
+
+#include <cassert>
+#include <cstdarg>
+#include <cstddef>
+#include <cstdio>
+#include <cstdlib>
+#include <string>
+#include <string_view>
+#include <utility>
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include "test_macros.h"
+#include "test_allocator.h"
+
+#ifndef _LIBCPP_VERSION
+# error "This header may only be used for libc++ tests"
+#endif
+
+#if TEST_STD_VER < 11
+# error "C++11 or greater is required to use this header"
+#endif
+
+struct AssertionInfoMatcher {
+  static const int any_line = -1;
+  static constexpr const char* any_file = "*";
+  static constexpr const char* any_msg = "*";
+
+  constexpr AssertionInfoMatcher() : is_empty_(true), msg_(any_msg, __builtin_strlen(any_msg)), file_(any_file, __builtin_strlen(any_file)), line_(any_line) { }
+  constexpr AssertionInfoMatcher(const char* msg, const char* file = any_file, int line = any_line)
+    : is_empty_(false), msg_(msg, __builtin_strlen(msg)), file_(file, __builtin_strlen(file)), line_(line) {}
+
+  bool Matches(char const* file, int line, char const* message) const {
+    assert(!empty() && "empty matcher");
+
+    if (CheckLineMatches(line) && CheckFileMatches(file) && CheckMessageMatches(message))
+        return true;
+    // Write to stdout because that's the file descriptor captured by the parent
+    // process.
+    std::printf("Failed to match assertion info!\n%s\nVS\n%s:%d (%s)\n", ToString().data(), file, line, message);
+    return false;
+  }
+
+  std::string ToString() const {
+    std::string result = "msg = \""; result += msg_; result += "\"\n";
+    result += "line = " + (line_ == any_line ? "'*'" : std::to_string(line_)) + "\n";
+    result += "file = " + (file_ == any_file ? "'*'" : std::string(file_));
+    return result;
+  }
+
+  bool empty() const { return is_empty_; }
+private:
+  bool CheckLineMatches(int got_line) const {
+    if (line_ == any_line)
+      return true;
+    return got_line == line_;
+  }
+
+  bool CheckFileMatches(std::string_view got_file) const {
+    assert(!empty() && "empty matcher");
+    if (file_ == any_file)
+      return true;
+    std::size_t found_at = got_file.find(file_);
+    if (found_at == std::string_view::npos)
+      return false;
+    // require the match start at the beginning of the file or immediately after
+    // a directory separator.
+    if (found_at != 0) {
+      char last_char = got_file[found_at - 1];
+      if (last_char != '/' && last_char != '\\')
+        return false;
+    }
+    // require the match goes until the end of the string.
+    return got_file.substr(found_at) == file_;
+  }
+
+  bool CheckMessageMatches(std::string_view got_msg) const {
+    assert(!empty() && "empty matcher");
+    if (msg_ == any_msg)
+      return true;
+    std::size_t found_at = got_msg.find(msg_);
+    if (found_at == std::string_view::npos)
+      return false;
+    // Allow any match
+    return true;
+  }
+private:
+  bool is_empty_;
+  std::string_view msg_;
+  std::string_view file_;
+  int line_;
+};
+
+static constexpr AssertionInfoMatcher AnyMatcher(AssertionInfoMatcher::any_msg);
+
+inline AssertionInfoMatcher& GlobalMatcher() {
+  static AssertionInfoMatcher GMatch;
+  return GMatch;
+}
+
+struct DeathTest {
+  enum ResultKind {
+    RK_DidNotDie, RK_MatchFound, RK_MatchFailure, RK_SetupFailure, RK_Unknown
+  };
+
+  static const char* ResultKindToString(ResultKind RK) {
+#define CASE(K) case K: return #K
+    switch (RK) {
+    CASE(RK_MatchFailure);
+    CASE(RK_DidNotDie);
+    CASE(RK_SetupFailure);
+    CASE(RK_MatchFound);
+    CASE(RK_Unknown);
+    }
+    return "not a result kind";
+  }
+
+  static bool IsValidResultKind(int val) {
+    return val >= RK_DidNotDie && val <= RK_Unknown;
+  }
+
+  DeathTest(AssertionInfoMatcher const& Matcher) : matcher_(Matcher) {}
+
+  template <class Func>
+  ResultKind Run(Func&& f) {
+    int pipe_res = pipe(stdout_pipe_fd_);
+    assert(pipe_res != -1 && "failed to create pipe");
+    pipe_res = pipe(stderr_pipe_fd_);
+    assert(pipe_res != -1 && "failed to create pipe");
+    pid_t child_pid = fork();
+    assert(child_pid != -1 &&
+        "failed to fork a process to perform a death test");
+    child_pid_ = child_pid;
+    if (child_pid_ == 0) {
+      RunForChild(std::forward<Func>(f));
+      assert(false && "unreachable");
+    }
+    return RunForParent();
+  }
+
+  int getChildExitCode() const { return exit_code_; }
+  std::string const& getChildStdOut() const { return stdout_from_child_; }
+  std::string const& getChildStdErr() const { return stderr_from_child_; }
+private:
+  template <class Func>
+  TEST_NORETURN void RunForChild(Func&& f) {
+    close(GetStdOutReadFD()); // don't need to read from the pipe in the child.
+    close(GetStdErrReadFD());
+    auto DupFD = [](int DestFD, int TargetFD) {
+      int dup_result = dup2(DestFD, TargetFD);
+      if (dup_result == -1)
+        std::exit(RK_SetupFailure);
+    };
+    DupFD(GetStdOutWriteFD(), STDOUT_FILENO);
+    DupFD(GetStdErrWriteFD(), STDERR_FILENO);
+
+    GlobalMatcher() = matcher_;
+    f();
+    std::exit(RK_DidNotDie);
+  }
+
+  static std::string ReadChildIOUntilEnd(int FD) {
+    std::string error_msg;
+    char buffer[256];
+    int num_read;
+    do {
+      while ((num_read = read(FD, buffer, 255)) > 0) {
+        buffer[num_read] = '\0';
+        error_msg += buffer;
+      }
+    } while (num_read == -1 && errno == EINTR);
+    return error_msg;
+  }
+
+  void CaptureIOFromChild() {
+    close(GetStdOutWriteFD()); // no need to write from the parent process
+    close(GetStdErrWriteFD());
+    stdout_from_child_ = ReadChildIOUntilEnd(GetStdOutReadFD());
+    stderr_from_child_ = ReadChildIOUntilEnd(GetStdErrReadFD());
+    close(GetStdOutReadFD());
+    close(GetStdErrReadFD());
+  }
+
+  ResultKind RunForParent() {
+    CaptureIOFromChild();
+
+    int status_value;
+    pid_t result = waitpid(child_pid_, &status_value, 0);
+    assert(result != -1 && "there is no child process to wait for");
+
+    if (WIFEXITED(status_value)) {
+      exit_code_ = WEXITSTATUS(status_value);
+      if (!IsValidResultKind(exit_code_))
+        return RK_Unknown;
+      return static_cast<ResultKind>(exit_code_);
+    }
+    return RK_Unknown;
+  }
+
+  DeathTest(DeathTest const&) = delete;
+  DeathTest& operator=(DeathTest const&) = delete;
+
+  int GetStdOutReadFD() const {
+    return stdout_pipe_fd_[0];
+  }
+
+  int GetStdOutWriteFD() const {
+    return stdout_pipe_fd_[1];
+  }
+
+  int GetStdErrReadFD() const {
+    return stderr_pipe_fd_[0];
+  }
+
+  int GetStdErrWriteFD() const {
+    return stderr_pipe_fd_[1];
+  }
+private:
+  AssertionInfoMatcher matcher_;
+  pid_t child_pid_ = -1;
+  int exit_code_ = -1;
+  int stdout_pipe_fd_[2];
+  int stderr_pipe_fd_[2];
+  std::string stdout_from_child_;
+  std::string stderr_from_child_;
+};
+
+void std::__libcpp_verbose_abort(char const* format, ...) {
+  assert(!GlobalMatcher().empty());
+
+  // Extract information from the error message. This has to stay synchronized with
+  // how we format assertions in the library.
+  va_list list;
+  va_start(list, format);
+  char const* file = va_arg(list, char const*);
+  int line = va_arg(list, int);
+  char const* expression = va_arg(list, char const*); (void)expression;
+  char const* message = va_arg(list, char const*);
+  va_end(list);
+
+  if (GlobalMatcher().Matches(file, line, message)) {
+    std::exit(DeathTest::RK_MatchFound);
+  }
+  std::exit(DeathTest::RK_MatchFailure);
+}
+
+template <class Func>
+inline bool ExpectDeath(const char* stmt, Func&& func, AssertionInfoMatcher Matcher) {
+  DeathTest DT(Matcher);
+  DeathTest::ResultKind RK = DT.Run(func);
+  auto OnFailure = [&](const char* msg) {
+    std::fprintf(stderr, "EXPECT_DEATH( %s ) failed! (%s)\n\n", stmt, msg);
+    if (RK != DeathTest::RK_Unknown) {
+      std::fprintf(stderr, "child exit code: %d\n", DT.getChildExitCode());
+    }
+    if (!DT.getChildStdErr().empty()) {
+      std::fprintf(stderr, "---------- standard err ----------\n%s\n", DT.getChildStdErr().c_str());
+    }
+    if (!DT.getChildStdOut().empty()) {
+      std::fprintf(stderr, "---------- standard out ----------\n%s\n", DT.getChildStdOut().c_str());
+    }
+    return false;
+  };
+  switch (RK) {
+  case DeathTest::RK_MatchFound:
+    return true;
+  case DeathTest::RK_SetupFailure:
+    return OnFailure("child failed to setup test environment");
+  case DeathTest::RK_Unknown:
+      return OnFailure("reason unknown");
+  case DeathTest::RK_DidNotDie:
+      return OnFailure("child did not die");
+  case DeathTest::RK_MatchFailure:
+      return OnFailure("matcher failed");
+  }
+  assert(false && "unreachable");
+}
+
+template <class Func>
+inline bool ExpectDeath(const char* stmt, Func&& func) {
+  return ExpectDeath(stmt, func, AnyMatcher);
+}
+
+/// Assert that the specified expression throws a libc++ debug exception.
+#define EXPECT_DEATH(...) assert((ExpectDeath(#__VA_ARGS__, [&]() { __VA_ARGS__; } )))
+
+#define EXPECT_DEATH_MATCHES(Matcher, ...) assert((ExpectDeath(#__VA_ARGS__, [&]() { __VA_ARGS__; }, Matcher)))
+
+#define TEST_LIBCPP_ASSERT_FAILURE(expr, message) assert((ExpectDeath(#expr, [&]() { (void)(expr); }, AssertionInfoMatcher(message))))
+
+#endif // TEST_SUPPORT_CHECK_ASSERTION_H
diff --git a/app/src/main/cpp/libcxx/test/support/cmpxchg_loop.h b/app/src/main/cpp/libcxx/test/support/cmpxchg_loop.h
new file mode 100644
index 0000000..e341606
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/cmpxchg_loop.h
@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <atomic>
+
+template <class A>
+bool cmpxchg_weak_loop(A& atomic, typename A::value_type& expected, typename A::value_type desired) {
+  for (int i = 0; i < 10; i++) {
+    if (atomic.compare_exchange_weak(expected, desired) == true) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+template <class A>
+bool cmpxchg_weak_loop(A& atomic, typename A::value_type& expected, typename A::value_type desired,
+                       std::memory_order success,
+                       std::memory_order failure) {
+  for (int i = 0; i < 10; i++) {
+    if (atomic.compare_exchange_weak(expected, desired, success,
+                                     failure) == true) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+template <class A>
+bool c_cmpxchg_weak_loop(A* atomic, typename A::value_type* expected, typename A::value_type desired) {
+  for (int i = 0; i < 10; i++) {
+    if (std::atomic_compare_exchange_weak(atomic, expected, desired) == true) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+template <class A>
+bool c_cmpxchg_weak_loop(A* atomic, typename A::value_type* expected, typename A::value_type desired,
+                         std::memory_order success,
+                         std::memory_order failure) {
+  for (int i = 0; i < 10; i++) {
+    if (std::atomic_compare_exchange_weak_explicit(atomic, expected, desired,
+                                                   success, failure) == true) {
+      return true;
+    }
+  }
+
+  return false;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/compare_types.h b/app/src/main/cpp/libcxx/test/support/compare_types.h
new file mode 100644
index 0000000..8155f62
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/compare_types.h
@@ -0,0 +1,532 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_COMPARE_TYPES_H
+#define TEST_SUPPORT_COMPARE_TYPES_H
+
+#include <compare>
+#include <concepts>
+#include <type_traits>
+
+// `noexcept` specifiers deliberately imperfect since not all programmers bother to put the
+// specifiers on their overloads.
+
+struct equality_comparable_with_ec1;
+struct no_neq;
+
+struct cxx20_member_eq {
+  bool operator==(cxx20_member_eq const&) const = default;
+};
+
+struct cxx20_friend_eq {
+  friend bool operator==(cxx20_friend_eq const&, cxx20_friend_eq const&) = default;
+};
+
+struct member_three_way_comparable {
+  auto operator<=>(member_three_way_comparable const&) const = default;
+};
+
+struct friend_three_way_comparable {
+  friend auto operator<=>(friend_three_way_comparable const&, friend_three_way_comparable const&) = default;
+};
+
+struct explicit_operators {
+  friend bool operator==(explicit_operators, explicit_operators) noexcept;
+  friend bool operator!=(explicit_operators, explicit_operators) noexcept;
+  friend bool operator<(explicit_operators, explicit_operators) noexcept;
+  friend bool operator>(explicit_operators, explicit_operators) noexcept;
+  friend bool operator<=(explicit_operators, explicit_operators) noexcept;
+  friend bool operator>=(explicit_operators, explicit_operators) noexcept;
+
+  friend bool operator==(explicit_operators const&, equality_comparable_with_ec1 const&) noexcept;
+  friend bool operator==(equality_comparable_with_ec1 const&, explicit_operators const&) noexcept;
+  friend bool operator!=(explicit_operators const&, equality_comparable_with_ec1 const&) noexcept;
+  friend bool operator!=(equality_comparable_with_ec1 const&, explicit_operators const&) noexcept;
+};
+
+struct different_return_types {
+  bool operator==(different_return_types) const noexcept;
+  char operator!=(different_return_types) const noexcept;
+  short operator<(different_return_types) const noexcept;
+  int operator>(different_return_types) const noexcept;
+  long operator<=(different_return_types) const noexcept;
+  long long operator>=(different_return_types) const noexcept;
+
+  friend signed char operator==(explicit_operators, different_return_types);
+  friend unsigned char operator==(different_return_types, explicit_operators);
+  friend float operator!=(explicit_operators, different_return_types);
+  friend double operator!=(different_return_types, explicit_operators);
+
+  operator explicit_operators() const;
+};
+
+struct boolean {
+  operator bool() const noexcept;
+};
+
+struct one_member_one_friend {
+  friend boolean operator==(one_member_one_friend, one_member_one_friend) noexcept;
+  boolean operator!=(one_member_one_friend) const noexcept;
+
+  operator explicit_operators() const noexcept;
+  operator different_return_types() const noexcept;
+};
+
+struct equality_comparable_with_ec1 {
+  bool operator==(equality_comparable_with_ec1) const noexcept;
+  bool operator!=(equality_comparable_with_ec1) const noexcept;
+  operator explicit_operators() const noexcept;
+};
+
+struct no_eq {
+  friend bool operator==(no_eq, no_eq) = delete;
+  friend bool operator!=(no_eq, no_eq) noexcept;
+  friend bool operator<(no_eq, no_eq) noexcept;
+  friend bool operator>(no_eq, no_eq) noexcept;
+  friend bool operator>=(no_eq, no_eq) noexcept;
+  friend bool operator<=(no_eq, no_eq) noexcept;
+};
+
+struct no_neq {
+  friend bool operator==(no_neq, no_neq) noexcept;
+  friend bool operator!=(no_neq, no_neq) = delete;
+  friend bool operator<(no_eq, no_eq) noexcept;
+  friend bool operator>(no_eq, no_eq) noexcept;
+  friend bool operator>=(no_eq, no_eq) noexcept;
+  friend bool operator<=(no_eq, no_eq) noexcept;
+};
+
+struct no_lt {
+  friend bool operator==(no_lt, no_lt) noexcept;
+  friend bool operator!=(no_lt, no_lt) noexcept;
+  friend bool operator<(no_lt, no_lt) = delete;
+  friend bool operator>(no_lt, no_lt) noexcept;
+  friend bool operator>=(no_lt, no_lt) noexcept;
+  friend bool operator<=(no_lt, no_lt) noexcept;
+};
+
+struct no_gt {
+  friend bool operator==(no_gt, no_gt) noexcept;
+  friend bool operator!=(no_gt, no_gt) noexcept;
+  friend bool operator<(no_gt, no_gt) noexcept;
+  friend bool operator>(no_gt, no_gt) = delete;
+  friend bool operator>=(no_gt, no_gt) noexcept;
+  friend bool operator<=(no_gt, no_gt) noexcept;
+};
+
+struct no_le {
+  friend bool operator==(no_le, no_le) noexcept;
+  friend bool operator!=(no_le, no_le) noexcept;
+  friend bool operator<(no_le, no_le) noexcept;
+  friend bool operator>(no_le, no_le) noexcept;
+  friend bool operator>=(no_le, no_le) = delete;
+  friend bool operator<=(no_le, no_le) noexcept;
+};
+
+struct no_ge {
+  friend bool operator==(no_ge, no_ge) noexcept;
+  friend bool operator!=(no_ge, no_ge) noexcept;
+  friend bool operator<(no_ge, no_ge) noexcept;
+  friend bool operator>(no_ge, no_ge) noexcept;
+  friend bool operator>=(no_ge, no_ge) noexcept;
+  friend bool operator<=(no_ge, no_ge) = delete;
+};
+
+struct wrong_return_type_eq {
+  void operator==(wrong_return_type_eq) const noexcept;
+  bool operator!=(wrong_return_type_eq) const noexcept;
+  bool operator<(wrong_return_type_eq) const noexcept;
+  bool operator>(wrong_return_type_eq) const noexcept;
+  bool operator>=(wrong_return_type_eq) const noexcept;
+  bool operator<=(wrong_return_type_eq) const noexcept;
+};
+
+struct wrong_return_type_ne {
+  bool operator==(wrong_return_type_ne) const noexcept;
+  void operator!=(wrong_return_type_ne) const noexcept;
+  bool operator<(wrong_return_type_ne) const noexcept;
+  bool operator>(wrong_return_type_ne) const noexcept;
+  bool operator>=(wrong_return_type_ne) const noexcept;
+  bool operator<=(wrong_return_type_ne) const noexcept;
+};
+
+struct wrong_return_type_lt {
+  bool operator==(wrong_return_type_lt) const noexcept;
+  bool operator!=(wrong_return_type_lt) const noexcept;
+  void operator<(wrong_return_type_lt) const noexcept;
+  bool operator>(wrong_return_type_lt) const noexcept;
+  bool operator>=(wrong_return_type_lt) const noexcept;
+  bool operator<=(wrong_return_type_lt) const noexcept;
+};
+
+struct wrong_return_type_gt {
+  bool operator==(wrong_return_type_gt) const noexcept;
+  bool operator!=(wrong_return_type_gt) const noexcept;
+  bool operator<(wrong_return_type_gt) const noexcept;
+  void operator>(wrong_return_type_gt) const noexcept;
+  bool operator>=(wrong_return_type_gt) const noexcept;
+  bool operator<=(wrong_return_type_gt) const noexcept;
+};
+
+struct wrong_return_type_le {
+  bool operator==(wrong_return_type_le) const noexcept;
+  bool operator!=(wrong_return_type_le) const noexcept;
+  bool operator<(wrong_return_type_le) const noexcept;
+  bool operator>(wrong_return_type_le) const noexcept;
+  void operator>=(wrong_return_type_le) const noexcept;
+  bool operator<=(wrong_return_type_le) const noexcept;
+};
+
+struct wrong_return_type_ge {
+  bool operator==(wrong_return_type_ge) const noexcept;
+  bool operator!=(wrong_return_type_ge) const noexcept;
+  bool operator<(wrong_return_type_ge) const noexcept;
+  bool operator>(wrong_return_type_ge) const noexcept;
+  bool operator>=(wrong_return_type_ge) const noexcept;
+  void operator<=(wrong_return_type_ge) const noexcept;
+};
+
+struct wrong_return_type {
+  void operator==(wrong_return_type) const noexcept;
+  void operator!=(wrong_return_type) const noexcept;
+  void operator<(wrong_return_type) const noexcept;
+  void operator>(wrong_return_type) const noexcept;
+  void operator>=(wrong_return_type) const noexcept;
+  void operator<=(wrong_return_type_ge) const noexcept;
+};
+
+struct cxx20_member_eq_operator_with_deleted_ne {
+  bool operator==(cxx20_member_eq_operator_with_deleted_ne const&) const = default;
+  bool operator!=(cxx20_member_eq_operator_with_deleted_ne const&) const = delete;
+};
+
+struct cxx20_friend_eq_operator_with_deleted_ne {
+  friend bool operator==(cxx20_friend_eq_operator_with_deleted_ne const&,
+                         cxx20_friend_eq_operator_with_deleted_ne const&) = default;
+  friend bool operator!=(cxx20_friend_eq_operator_with_deleted_ne const&,
+                         cxx20_friend_eq_operator_with_deleted_ne const&) = delete;
+};
+
+struct member_three_way_comparable_with_deleted_eq {
+  auto operator<=>(member_three_way_comparable_with_deleted_eq const&) const = default;
+  bool operator==(member_three_way_comparable_with_deleted_eq const&) const = delete;
+};
+
+struct member_three_way_comparable_with_deleted_ne {
+  auto operator<=>(member_three_way_comparable_with_deleted_ne const&) const = default;
+  bool operator!=(member_three_way_comparable_with_deleted_ne const&) const = delete;
+};
+
+struct friend_three_way_comparable_with_deleted_eq {
+  friend auto operator<=>(friend_three_way_comparable_with_deleted_eq const&,
+                          friend_three_way_comparable_with_deleted_eq const&) = default;
+  friend bool operator==(friend_three_way_comparable_with_deleted_eq const&,
+                         friend_three_way_comparable_with_deleted_eq const&) = delete;
+};
+
+struct friend_three_way_comparable_with_deleted_ne {
+  friend auto operator<=>(friend_three_way_comparable_with_deleted_ne const&,
+                          friend_three_way_comparable_with_deleted_ne const&) = default;
+  friend bool operator!=(friend_three_way_comparable_with_deleted_ne const&,
+                         friend_three_way_comparable_with_deleted_ne const&) = delete;
+};
+
+struct one_way_eq {
+  bool operator==(one_way_eq const&) const = default;
+  friend bool operator==(one_way_eq, explicit_operators);
+  friend bool operator==(explicit_operators, one_way_eq) = delete;
+
+  operator explicit_operators() const;
+};
+
+struct one_way_ne {
+  bool operator==(one_way_ne const&) const = default;
+  friend bool operator==(one_way_ne, explicit_operators);
+  friend bool operator!=(one_way_ne, explicit_operators) = delete;
+
+  operator explicit_operators() const;
+};
+static_assert(requires(explicit_operators const x, one_way_ne const y) { x != y; });
+
+struct explicit_bool {
+  explicit operator bool() const noexcept;
+};
+
+struct totally_ordered_with_others {
+  auto operator<=>(totally_ordered_with_others const&) const = default;
+};
+
+struct no_lt_not_totally_ordered_with {
+  bool operator==(no_lt_not_totally_ordered_with const&) const = default;
+  auto operator<=>(no_lt_not_totally_ordered_with const&) const = default;
+  operator totally_ordered_with_others() const noexcept;
+
+  bool operator==(totally_ordered_with_others const&) const;
+  auto operator<=>(totally_ordered_with_others const&) const;
+  auto operator<(totally_ordered_with_others const&) const;
+};
+
+struct no_gt_not_totally_ordered_with {
+  bool operator==(no_gt_not_totally_ordered_with const&) const = default;
+  auto operator<=>(no_gt_not_totally_ordered_with const&) const = default;
+  operator totally_ordered_with_others() const noexcept;
+
+  bool operator==(totally_ordered_with_others const&) const;
+  auto operator<=>(totally_ordered_with_others const&) const;
+  auto operator>(totally_ordered_with_others const&) const;
+};
+
+struct no_le_not_totally_ordered_with {
+  bool operator==(no_le_not_totally_ordered_with const&) const = default;
+  auto operator<=>(no_le_not_totally_ordered_with const&) const = default;
+  operator totally_ordered_with_others() const noexcept;
+
+  bool operator==(totally_ordered_with_others const&) const;
+  auto operator<=>(totally_ordered_with_others const&) const;
+  auto operator<=(totally_ordered_with_others const&) const;
+};
+
+struct no_ge_not_totally_ordered_with {
+  bool operator==(no_ge_not_totally_ordered_with const&) const = default;
+  auto operator<=>(no_ge_not_totally_ordered_with const&) const = default;
+  operator totally_ordered_with_others() const noexcept;
+
+  bool operator==(totally_ordered_with_others const&) const;
+  auto operator<=>(totally_ordered_with_others const&) const;
+  auto operator>=(totally_ordered_with_others const&) const;
+};
+
+struct partial_ordering_totally_ordered_with {
+  auto operator<=>(partial_ordering_totally_ordered_with const&) const noexcept = default;
+  std::partial_ordering operator<=>(totally_ordered_with_others const&) const noexcept;
+
+  operator totally_ordered_with_others() const;
+};
+
+struct weak_ordering_totally_ordered_with {
+  auto operator<=>(weak_ordering_totally_ordered_with const&) const noexcept = default;
+  std::weak_ordering operator<=>(totally_ordered_with_others const&) const noexcept;
+
+  operator totally_ordered_with_others() const;
+};
+
+struct strong_ordering_totally_ordered_with {
+  auto operator<=>(strong_ordering_totally_ordered_with const&) const noexcept = default;
+  std::strong_ordering operator<=>(totally_ordered_with_others const&) const noexcept;
+
+  operator totally_ordered_with_others() const;
+};
+
+struct eq_returns_explicit_bool {
+  friend explicit_bool operator==(eq_returns_explicit_bool, eq_returns_explicit_bool);
+  friend bool operator!=(eq_returns_explicit_bool, eq_returns_explicit_bool);
+  friend bool operator<(eq_returns_explicit_bool, eq_returns_explicit_bool);
+  friend bool operator>(eq_returns_explicit_bool, eq_returns_explicit_bool);
+  friend bool operator<=(eq_returns_explicit_bool, eq_returns_explicit_bool);
+  friend bool operator>=(eq_returns_explicit_bool, eq_returns_explicit_bool);
+
+  operator totally_ordered_with_others() const;
+
+  friend explicit_bool operator==(eq_returns_explicit_bool, totally_ordered_with_others);
+  friend explicit_bool operator==(totally_ordered_with_others, eq_returns_explicit_bool);
+  friend bool operator!=(eq_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(totally_ordered_with_others, eq_returns_explicit_bool);
+  friend bool operator<(eq_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<(totally_ordered_with_others, eq_returns_explicit_bool);
+  friend bool operator>(eq_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>(totally_ordered_with_others, eq_returns_explicit_bool);
+  friend bool operator<=(eq_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<=(totally_ordered_with_others, eq_returns_explicit_bool);
+  friend bool operator>=(eq_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>=(totally_ordered_with_others, eq_returns_explicit_bool);
+};
+
+struct ne_returns_explicit_bool {
+  friend bool operator==(ne_returns_explicit_bool, ne_returns_explicit_bool);
+  friend explicit_bool operator!=(ne_returns_explicit_bool, ne_returns_explicit_bool);
+  friend bool operator<(ne_returns_explicit_bool, ne_returns_explicit_bool);
+  friend bool operator>(ne_returns_explicit_bool, ne_returns_explicit_bool);
+  friend bool operator<=(ne_returns_explicit_bool, ne_returns_explicit_bool);
+  friend bool operator>=(ne_returns_explicit_bool, ne_returns_explicit_bool);
+
+  operator totally_ordered_with_others() const;
+
+  friend bool operator==(ne_returns_explicit_bool, totally_ordered_with_others);
+  friend explicit_bool operator!=(ne_returns_explicit_bool, totally_ordered_with_others);
+  friend explicit_bool operator!=(totally_ordered_with_others, ne_returns_explicit_bool);
+  friend bool operator<(ne_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<(totally_ordered_with_others, ne_returns_explicit_bool);
+  friend bool operator>(ne_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>(totally_ordered_with_others, ne_returns_explicit_bool);
+  friend bool operator<=(ne_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<=(totally_ordered_with_others, ne_returns_explicit_bool);
+  friend bool operator>=(ne_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>=(totally_ordered_with_others, ne_returns_explicit_bool);
+};
+
+struct lt_returns_explicit_bool {
+  friend bool operator==(lt_returns_explicit_bool, lt_returns_explicit_bool);
+  friend bool operator!=(lt_returns_explicit_bool, lt_returns_explicit_bool);
+  friend explicit_bool operator<(lt_returns_explicit_bool, lt_returns_explicit_bool);
+  friend bool operator>(lt_returns_explicit_bool, lt_returns_explicit_bool);
+  friend bool operator<=(lt_returns_explicit_bool, lt_returns_explicit_bool);
+  friend bool operator>=(lt_returns_explicit_bool, lt_returns_explicit_bool);
+
+  operator totally_ordered_with_others() const;
+
+  friend bool operator==(lt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(lt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(totally_ordered_with_others, lt_returns_explicit_bool);
+  friend explicit_bool operator<(lt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<(totally_ordered_with_others, lt_returns_explicit_bool);
+  friend bool operator>(lt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>(totally_ordered_with_others, lt_returns_explicit_bool);
+  friend bool operator<=(lt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<=(totally_ordered_with_others, lt_returns_explicit_bool);
+  friend bool operator>=(lt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>=(totally_ordered_with_others, lt_returns_explicit_bool);
+};
+
+struct gt_returns_explicit_bool {
+  friend bool operator==(gt_returns_explicit_bool, gt_returns_explicit_bool);
+  friend bool operator!=(gt_returns_explicit_bool, gt_returns_explicit_bool);
+  friend bool operator<(gt_returns_explicit_bool, gt_returns_explicit_bool);
+  friend explicit_bool operator>(gt_returns_explicit_bool, gt_returns_explicit_bool);
+  friend bool operator<=(gt_returns_explicit_bool, gt_returns_explicit_bool);
+  friend bool operator>=(gt_returns_explicit_bool, gt_returns_explicit_bool);
+
+  operator totally_ordered_with_others() const;
+
+  friend bool operator==(gt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(gt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(totally_ordered_with_others, gt_returns_explicit_bool);
+  friend bool operator<(gt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<(totally_ordered_with_others, gt_returns_explicit_bool);
+  friend explicit_bool operator>(gt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>(totally_ordered_with_others, gt_returns_explicit_bool);
+  friend bool operator<=(gt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<=(totally_ordered_with_others, gt_returns_explicit_bool);
+  friend bool operator>=(gt_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>=(totally_ordered_with_others, gt_returns_explicit_bool);
+};
+
+struct le_returns_explicit_bool {
+  friend bool operator==(le_returns_explicit_bool, le_returns_explicit_bool);
+  friend bool operator!=(le_returns_explicit_bool, le_returns_explicit_bool);
+  friend bool operator<(le_returns_explicit_bool, le_returns_explicit_bool);
+  friend bool operator>(le_returns_explicit_bool, le_returns_explicit_bool);
+  friend explicit_bool operator<=(le_returns_explicit_bool, le_returns_explicit_bool);
+  friend bool operator>=(le_returns_explicit_bool, le_returns_explicit_bool);
+
+  operator totally_ordered_with_others() const;
+
+  friend bool operator==(le_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(le_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(totally_ordered_with_others, le_returns_explicit_bool);
+  friend bool operator<(le_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<(totally_ordered_with_others, le_returns_explicit_bool);
+  friend bool operator>(le_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>(totally_ordered_with_others, le_returns_explicit_bool);
+  friend bool operator<=(le_returns_explicit_bool, totally_ordered_with_others);
+  friend explicit_bool operator<=(totally_ordered_with_others, le_returns_explicit_bool);
+  friend bool operator>=(le_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>=(totally_ordered_with_others, le_returns_explicit_bool);
+};
+
+struct ge_returns_explicit_bool {
+  friend bool operator==(ge_returns_explicit_bool, ge_returns_explicit_bool);
+  friend bool operator!=(ge_returns_explicit_bool, ge_returns_explicit_bool);
+  friend bool operator<(ge_returns_explicit_bool, ge_returns_explicit_bool);
+  friend bool operator>(ge_returns_explicit_bool, ge_returns_explicit_bool);
+  friend bool operator<=(ge_returns_explicit_bool, ge_returns_explicit_bool);
+  friend explicit_bool operator>=(ge_returns_explicit_bool, ge_returns_explicit_bool);
+
+  operator totally_ordered_with_others() const;
+
+  friend bool operator==(ge_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(ge_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator!=(totally_ordered_with_others, ge_returns_explicit_bool);
+  friend bool operator<(ge_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<(totally_ordered_with_others, ge_returns_explicit_bool);
+  friend bool operator>(ge_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator>(totally_ordered_with_others, ge_returns_explicit_bool);
+  friend bool operator<=(ge_returns_explicit_bool, totally_ordered_with_others);
+  friend bool operator<=(totally_ordered_with_others, ge_returns_explicit_bool);
+  friend bool operator>=(ge_returns_explicit_bool, totally_ordered_with_others);
+  friend explicit_bool operator>=(totally_ordered_with_others, ge_returns_explicit_bool);
+};
+
+struct returns_true_type {
+  friend std::true_type operator==(returns_true_type, returns_true_type);
+  friend std::true_type operator!=(returns_true_type, returns_true_type);
+  friend std::true_type operator<(returns_true_type, returns_true_type);
+  friend std::true_type operator>(returns_true_type, returns_true_type);
+  friend std::true_type operator<=(returns_true_type, returns_true_type);
+  friend std::true_type operator>=(returns_true_type, returns_true_type);
+
+  operator totally_ordered_with_others() const;
+
+  friend std::true_type operator==(returns_true_type, totally_ordered_with_others);
+  friend std::true_type operator==(totally_ordered_with_others, returns_true_type);
+  friend std::true_type operator!=(returns_true_type, totally_ordered_with_others);
+  friend std::true_type operator!=(totally_ordered_with_others, returns_true_type);
+  friend std::true_type operator<(returns_true_type, totally_ordered_with_others);
+  friend std::true_type operator<(totally_ordered_with_others, returns_true_type);
+  friend std::true_type operator>(returns_true_type, totally_ordered_with_others);
+  friend std::true_type operator>(totally_ordered_with_others, returns_true_type);
+  friend std::true_type operator<=(returns_true_type, totally_ordered_with_others);
+  friend std::true_type operator<=(totally_ordered_with_others, returns_true_type);
+  friend std::true_type operator>=(returns_true_type, totally_ordered_with_others);
+  friend std::true_type operator>=(totally_ordered_with_others, returns_true_type);
+};
+
+struct returns_int_ptr {
+  friend int* operator==(returns_int_ptr, returns_int_ptr);
+  friend int* operator!=(returns_int_ptr, returns_int_ptr);
+  friend int* operator<(returns_int_ptr, returns_int_ptr);
+  friend int* operator>(returns_int_ptr, returns_int_ptr);
+  friend int* operator<=(returns_int_ptr, returns_int_ptr);
+  friend int* operator>=(returns_int_ptr, returns_int_ptr);
+
+  operator totally_ordered_with_others() const;
+
+  friend int* operator==(returns_int_ptr, totally_ordered_with_others);
+  friend int* operator==(totally_ordered_with_others, returns_int_ptr);
+  friend int* operator!=(returns_int_ptr, totally_ordered_with_others);
+  friend int* operator!=(totally_ordered_with_others, returns_int_ptr);
+  friend int* operator<(returns_int_ptr, totally_ordered_with_others);
+  friend int* operator<(totally_ordered_with_others, returns_int_ptr);
+  friend int* operator>(returns_int_ptr, totally_ordered_with_others);
+  friend int* operator>(totally_ordered_with_others, returns_int_ptr);
+  friend int* operator<=(returns_int_ptr, totally_ordered_with_others);
+  friend int* operator<=(totally_ordered_with_others, returns_int_ptr);
+  friend int* operator>=(returns_int_ptr, totally_ordered_with_others);
+  friend int* operator>=(totally_ordered_with_others, returns_int_ptr);
+};
+
+struct ForwardingTestObject {
+  constexpr bool operator<(ForwardingTestObject&&) && { return true; }
+  constexpr bool operator<(const ForwardingTestObject&) const& { return false; }
+
+  constexpr bool operator==(ForwardingTestObject&&) && { return true; }
+  constexpr bool operator==(const ForwardingTestObject&) const& { return false; }
+
+  constexpr bool operator!=(ForwardingTestObject&&) && { return true; }
+  constexpr bool operator!=(const ForwardingTestObject&) const& { return false; }
+
+  constexpr bool operator<=(ForwardingTestObject&&) && { return true; }
+  constexpr bool operator<=(const ForwardingTestObject&) const& { return false; }
+
+  constexpr bool operator>(ForwardingTestObject&&) && { return true; }
+  constexpr bool operator>(const ForwardingTestObject&) const& { return false; }
+
+  constexpr bool operator>=(ForwardingTestObject&&) && { return true; }
+  constexpr bool operator>=(const ForwardingTestObject&) const& { return false; }
+};
+
+#endif // TEST_SUPPORT_COMPARE_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/support/constexpr_char_traits.h b/app/src/main/cpp/libcxx/test/support/constexpr_char_traits.h
new file mode 100644
index 0000000..56c22fe
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/constexpr_char_traits.h
@@ -0,0 +1,141 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _CONSTEXPR_CHAR_TRAITS
+#define _CONSTEXPR_CHAR_TRAITS
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct constexpr_char_traits
+{
+    typedef CharT     char_type;
+    typedef int       int_type;
+    typedef std::streamoff off_type;
+    typedef std::streampos pos_type;
+    typedef std::mbstate_t state_type;
+    // The comparison_category is omitted so the class will have weak_ordering
+    // in C++20. This is intentional.
+
+    static TEST_CONSTEXPR_CXX14 void assign(char_type& c1, const char_type& c2) TEST_NOEXCEPT
+        {c1 = c2;}
+
+    static TEST_CONSTEXPR bool eq(char_type c1, char_type c2) TEST_NOEXCEPT
+        {return c1 == c2;}
+
+    static TEST_CONSTEXPR  bool lt(char_type c1, char_type c2) TEST_NOEXCEPT
+        {return c1 < c2;}
+
+    static TEST_CONSTEXPR_CXX14 int              compare(const char_type* s1, const char_type* s2, size_t n);
+    static TEST_CONSTEXPR_CXX14 size_t           length(const char_type* s);
+    static TEST_CONSTEXPR_CXX14 const char_type* find(const char_type* s, size_t n, const char_type& a);
+    static TEST_CONSTEXPR_CXX14 char_type*       move(char_type* s1, const char_type* s2, size_t n);
+    static TEST_CONSTEXPR_CXX14 char_type*       copy(char_type* s1, const char_type* s2, size_t n);
+    static TEST_CONSTEXPR_CXX14 char_type*       assign(char_type* s, size_t n, char_type a);
+
+    static TEST_CONSTEXPR int_type  not_eof(int_type c) TEST_NOEXCEPT
+        {return eq_int_type(c, eof()) ? ~eof() : c;}
+
+    static TEST_CONSTEXPR char_type to_char_type(int_type c) TEST_NOEXCEPT
+        {return char_type(c);}
+
+    static TEST_CONSTEXPR int_type  to_int_type(char_type c) TEST_NOEXCEPT
+        {return int_type(c);}
+
+    static TEST_CONSTEXPR bool      eq_int_type(int_type c1, int_type c2) TEST_NOEXCEPT
+        {return c1 == c2;}
+
+    static TEST_CONSTEXPR int_type  eof() TEST_NOEXCEPT
+        {return int_type(EOF);}
+};
+
+
+template <class CharT>
+TEST_CONSTEXPR_CXX14 int
+constexpr_char_traits<CharT>::compare(const char_type* s1, const char_type* s2, size_t n)
+{
+    for (; n; --n, ++s1, ++s2)
+    {
+        if (lt(*s1, *s2))
+            return -1;
+        if (lt(*s2, *s1))
+            return 1;
+    }
+    return 0;
+}
+
+template <class CharT>
+TEST_CONSTEXPR_CXX14 size_t
+constexpr_char_traits<CharT>::length(const char_type* s)
+{
+    size_t len = 0;
+    for (; !eq(*s, char_type(0)); ++s)
+        ++len;
+    return len;
+}
+
+template <class CharT>
+TEST_CONSTEXPR_CXX14 const CharT*
+constexpr_char_traits<CharT>::find(const char_type* s, size_t n, const char_type& a)
+{
+    for (; n; --n)
+    {
+        if (eq(*s, a))
+            return s;
+        ++s;
+    }
+    return 0;
+}
+
+template <class CharT>
+TEST_CONSTEXPR_CXX14 CharT*
+constexpr_char_traits<CharT>::move(char_type* s1, const char_type* s2, size_t n)
+{
+    char_type* r = s1;
+    if (s1 < s2)
+    {
+        for (; n; --n, ++s1, ++s2)
+            assign(*s1, *s2);
+    }
+    else if (s2 < s1)
+    {
+        s1 += n;
+        s2 += n;
+        for (; n; --n)
+            assign(*--s1, *--s2);
+    }
+    return r;
+}
+
+template <class CharT>
+TEST_CONSTEXPR_CXX14 CharT*
+constexpr_char_traits<CharT>::copy(char_type* s1, const char_type* s2, size_t n)
+{
+    if (!TEST_IS_CONSTANT_EVALUATED) // fails in constexpr because we might be comparing unrelated pointers
+        assert(s2 < s1 || s2 >= s1+n);
+    char_type* r = s1;
+    for (; n; --n, ++s1, ++s2)
+        assign(*s1, *s2);
+    return r;
+}
+
+template <class CharT>
+TEST_CONSTEXPR_CXX14 CharT*
+constexpr_char_traits<CharT>::assign(char_type* s, size_t n, char_type a)
+{
+    char_type* r = s;
+    for (; n; --n, ++s)
+        assign(*s, a);
+    return r;
+}
+
+#endif // _CONSTEXPR_CHAR_TRAITS
diff --git a/app/src/main/cpp/libcxx/test/support/container_debug_tests.h b/app/src/main/cpp/libcxx/test/support/container_debug_tests.h
new file mode 100644
index 0000000..0a11ac8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/container_debug_tests.h
@@ -0,0 +1,350 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_CONTAINER_DEBUG_TESTS_H
+#define TEST_SUPPORT_CONTAINER_DEBUG_TESTS_H
+
+#include <ciso646>
+#ifndef _LIBCPP_VERSION
+#error This header may only be used for libc++ tests
+#endif
+
+#ifndef _LIBCPP_ENABLE_DEBUG_MODE
+#error The library must be built with the debug mode enabled in order to use this header
+#endif
+
+#include <__debug>
+#include <utility>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+#include "check_assertion.h"
+#include "test_allocator.h"
+#include "test_macros.h"
+
+// These test make use of 'if constexpr'.
+#if TEST_STD_VER <= 14
+#error This header may only be used in C++17 and greater
+#endif
+
+namespace IteratorDebugChecks {
+
+enum ContainerType {
+  CT_None,
+  CT_String,
+  CT_Vector,
+  CT_VectorBool,
+  CT_List,
+  CT_Deque,
+  CT_ForwardList,
+  CT_Map,
+  CT_Set,
+  CT_MultiMap,
+  CT_MultiSet,
+  CT_UnorderedMap,
+  CT_UnorderedSet,
+  CT_UnorderedMultiMap,
+  CT_UnorderedMultiSet
+};
+
+constexpr bool isSequential(ContainerType CT) {
+  return CT >= CT_Vector && CT <= CT_ForwardList;
+}
+
+constexpr bool isAssociative(ContainerType CT) {
+  return CT >= CT_Map && CT <= CT_MultiSet;
+}
+
+constexpr bool isUnordered(ContainerType CT) {
+  return CT >= CT_UnorderedMap && CT <= CT_UnorderedMultiSet;
+}
+
+constexpr bool isSet(ContainerType CT) {
+  return CT == CT_Set
+      || CT == CT_MultiSet
+      || CT == CT_UnorderedSet
+      || CT == CT_UnorderedMultiSet;
+}
+
+constexpr bool isMap(ContainerType CT) {
+  return CT == CT_Map
+      || CT == CT_MultiMap
+      || CT == CT_UnorderedMap
+      || CT == CT_UnorderedMultiMap;
+}
+
+constexpr bool isMulti(ContainerType CT) {
+  return CT == CT_MultiMap
+      || CT == CT_MultiSet
+      || CT == CT_UnorderedMultiMap
+      || CT == CT_UnorderedMultiSet;
+}
+
+template <class Container, class ValueType = typename Container::value_type>
+struct ContainerDebugHelper {
+  static_assert(std::is_constructible<ValueType, int>::value,
+                "must be constructible from int");
+
+  static ValueType makeValueType(int val = 0, int = 0) {
+    return ValueType(val);
+  }
+};
+
+template <class Container>
+struct ContainerDebugHelper<Container, char> {
+  static char makeValueType(int = 0, int = 0) {
+    return 'A';
+  }
+};
+
+template <class Container, class Key, class Value>
+struct ContainerDebugHelper<Container, std::pair<const Key, Value> > {
+  using ValueType = std::pair<const Key, Value>;
+  static_assert(std::is_constructible<Key, int>::value,
+                "must be constructible from int");
+  static_assert(std::is_constructible<Value, int>::value,
+                "must be constructible from int");
+
+  static ValueType makeValueType(int key = 0, int val = 0) {
+    return ValueType(key, val);
+  }
+};
+
+template <class Container, ContainerType CT,
+    class Helper = ContainerDebugHelper<Container> >
+struct BasicContainerChecks {
+  using value_type = typename Container::value_type;
+  using iterator = typename Container::iterator;
+  using const_iterator = typename Container::const_iterator;
+  using allocator_type = typename Container::allocator_type;
+  using traits = std::iterator_traits<iterator>;
+  using category = typename traits::iterator_category;
+
+  static_assert(std::is_same<test_allocator<value_type>, allocator_type>::value,
+                "the container must use a test allocator");
+
+  static constexpr bool IsBiDir =
+      std::is_convertible<category, std::bidirectional_iterator_tag>::value;
+
+ public:
+  static void run() {
+    run_iterator_tests();
+    run_container_tests();
+    run_allocator_aware_tests();
+  }
+
+  static void run_iterator_tests() {
+    TestNullIterators<iterator>();
+    TestNullIterators<const_iterator>();
+    if constexpr (IsBiDir) { DecrementBegin(); }
+    IncrementEnd();
+    DerefEndIterator();
+  }
+
+  static void run_container_tests() {
+    CopyInvalidatesIterators();
+    MoveInvalidatesIterators();
+    if constexpr (CT != CT_ForwardList) {
+      EraseIter();
+      EraseIterIter();
+    }
+  }
+
+  static void run_allocator_aware_tests() {
+    SwapNonEqualAllocators();
+    if constexpr (CT != CT_ForwardList ) {
+      // FIXME: This should work for both forward_list and string
+      SwapInvalidatesIterators();
+    }
+  }
+
+  static Container makeContainer(int size, allocator_type A = allocator_type()) {
+    Container C(A);
+    if constexpr (CT == CT_ForwardList) {
+      for (int i = 0; i < size; ++i)
+        C.insert_after(C.before_begin(), Helper::makeValueType(i));
+    } else {
+      for (int i = 0; i < size; ++i)
+        C.insert(C.end(), Helper::makeValueType(i));
+      assert(C.size() == static_cast<std::size_t>(size));
+    }
+    return C;
+  }
+
+  static value_type makeValueType(int value) {
+    return Helper::makeValueType(value);
+  }
+
+ private:
+  // Iterator tests
+  template <class Iter>
+  static void TestNullIterators() {
+    // testing null iterator
+    Iter it;
+    EXPECT_DEATH( ++it );
+    EXPECT_DEATH( it++ );
+    EXPECT_DEATH( *it );
+    if constexpr (CT != CT_VectorBool) {
+      EXPECT_DEATH( it.operator->() );
+    }
+    if constexpr (IsBiDir) {
+      EXPECT_DEATH( --it );
+      EXPECT_DEATH( it-- );
+    }
+  }
+
+  static void DecrementBegin() {
+    // testing decrement on begin
+    Container C = makeContainer(1);
+    iterator i = C.end();
+    const_iterator ci = C.cend();
+    --i;
+    --ci;
+    assert(i == C.begin());
+    EXPECT_DEATH( --i );
+    EXPECT_DEATH( i-- );
+    EXPECT_DEATH( --ci );
+    EXPECT_DEATH( ci-- );
+  }
+
+  static void IncrementEnd() {
+    // testing increment on end
+    Container C = makeContainer(1);
+    iterator i = C.begin();
+    const_iterator ci = C.begin();
+    ++i;
+    ++ci;
+    assert(i == C.end());
+    EXPECT_DEATH( ++i );
+    EXPECT_DEATH( i++ );
+    EXPECT_DEATH( ++ci );
+    EXPECT_DEATH( ci++ );
+  }
+
+  static void DerefEndIterator() {
+    // testing deref end iterator
+    Container C = makeContainer(1);
+    iterator i = C.begin();
+    const_iterator ci = C.cbegin();
+    (void)*i; (void)*ci;
+    if constexpr (CT != CT_VectorBool) {
+      i.operator->();
+      ci.operator->();
+    }
+    ++i; ++ci;
+    assert(i == C.end());
+    EXPECT_DEATH( *i );
+    EXPECT_DEATH( *ci );
+    if constexpr (CT != CT_VectorBool) {
+      EXPECT_DEATH( i.operator->() );
+      EXPECT_DEATH( ci.operator->() );
+    }
+  }
+
+  // Container tests
+  static void CopyInvalidatesIterators() {
+    // copy invalidates iterators
+    Container C1 = makeContainer(3);
+    iterator i = C1.begin();
+    Container C2 = C1;
+    if constexpr (CT == CT_ForwardList) {
+      iterator i_next = i;
+      ++i_next;
+      (void)*i_next;
+      EXPECT_DEATH( C2.erase_after(i) );
+      C1.erase_after(i);
+      EXPECT_DEATH( *i_next );
+    } else {
+      EXPECT_DEATH( C2.erase(i) );
+      (void)*i;
+      C1.erase(i);
+      EXPECT_DEATH( *i );
+    }
+  }
+
+  static void MoveInvalidatesIterators() {
+    // copy move invalidates iterators
+    Container C1 = makeContainer(3);
+    iterator i = C1.begin();
+    Container C2 = std::move(C1);
+    (void) *i;
+    if constexpr (CT == CT_ForwardList) {
+      EXPECT_DEATH( C1.erase_after(i) );
+      C2.erase_after(i);
+    } else {
+      EXPECT_DEATH( C1.erase(i) );
+      C2.erase(i);
+      EXPECT_DEATH(*i);
+    }
+  }
+
+  static void EraseIter() {
+    // testing erase invalidation
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    iterator it1_next = it1;
+    ++it1_next;
+    Container C2 = C1;
+    EXPECT_DEATH( C2.erase(it1) ); // wrong container
+    EXPECT_DEATH( C2.erase(C2.end()) ); // erase with end
+    C1.erase(it1_next);
+    EXPECT_DEATH( C1.erase(it1_next) ); // invalidated iterator
+    C1.erase(it1);
+    EXPECT_DEATH( C1.erase(it1) ); // invalidated iterator
+  }
+
+  static void EraseIterIter() {
+    // testing erase iter iter invalidation
+    Container C1 = makeContainer(2);
+    iterator it1 = C1.begin();
+    iterator it1_next = it1;
+    ++it1_next;
+    Container C2 = C1;
+    iterator it2 = C2.begin();
+    iterator it2_next = it2;
+    ++it2_next;
+    EXPECT_DEATH( C2.erase(it1, it1_next) ); // begin from wrong container
+    EXPECT_DEATH( C2.erase(it1, it2_next) ); // end   from wrong container
+    EXPECT_DEATH( C2.erase(it2, it1_next) ); // both  from wrong container
+    C2.erase(it2, it2_next);
+  }
+
+  // Allocator aware tests
+  static void SwapInvalidatesIterators() {
+    // testing swap invalidates iterators
+    Container C1 = makeContainer(3);
+    Container C2 = makeContainer(3);
+    iterator it1 = C1.begin();
+    iterator it2 = C2.begin();
+    swap(C1, C2);
+    EXPECT_DEATH( C1.erase(it1) );
+    if (CT == CT_String) {
+      EXPECT_DEATH(C1.erase(it2));
+    } else
+      C1.erase(it2);
+    //C2.erase(it1);
+    EXPECT_DEATH( C1.erase(it1) );
+  }
+
+  static void SwapNonEqualAllocators() {
+    // testing swap with non-equal allocators
+    Container C1 = makeContainer(3, allocator_type(1));
+    Container C2 = makeContainer(1, allocator_type(2));
+    Container C3 = makeContainer(2, allocator_type(2));
+    swap(C2, C3);
+    EXPECT_DEATH( swap(C1, C2) );
+  }
+
+ private:
+  BasicContainerChecks() = delete;
+};
+
+} // namespace IteratorDebugChecks
+
+#endif // TEST_SUPPORT_CONTAINER_DEBUG_TESTS_H
diff --git a/app/src/main/cpp/libcxx/test/support/container_test_types.h b/app/src/main/cpp/libcxx/test/support/container_test_types.h
new file mode 100644
index 0000000..96e2e2d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/container_test_types.h
@@ -0,0 +1,520 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_CONTAINER_TEST_TYPES_H
+#define SUPPORT_CONTAINER_TEST_TYPES_H
+
+// container_test_types.h - A set of types used for testing STL containers.
+// The types container within this header are used to test the requirements in
+// [container.requirements.general]. The header is made up of 3 main components:
+//
+// * test-types: 'CopyInsertable', 'MoveInsertable' and 'EmplaceConstructible' -
+//    These test types are used to test the container requirements of the same
+//    name. These test types use the global 'AllocatorConstructController' to
+//    assert that they are only constructed by the containers allocator.
+//
+// * test-allocator: 'ContainerTestAllocator' - This test allocator is used to
+//    test the portions of [container.requirements.general] that pertain to the
+//    containers allocator. The three primary jobs of the test allocator are:
+//      1. Enforce that 'a.construct(...)' and 'a.destroy(...)' are only ever
+//         instantiated for 'Container::value_type'.
+//      2. Provide a mechanism of checking calls to 'a.construct(Args...)'.
+//         Including controlling when and with what types 'a.construct(...)'
+//         may be called with.
+//      3. Support the test types internals by controlling the global
+//        'AllocatorConstructController' object.
+//
+// * 'AllocatorConstructController' - This type defines an interface for testing
+//   the construction of types using an allocator. This type is used to communicate
+//   between the test author, the containers allocator, and the types
+//   being constructed by the container.
+//   The controller's primary functions are:
+//     1. Allow calls to 'a.construct(p, args...)' to be checked by a test.
+//        The test uses 'cc->expect<Args...>()' to specify that the allocator
+//        should expect one call to 'a.construct' with the specified argument
+//        types.
+//     2. Controlling the value of 'cc->isInAllocatorConstruct()' within the
+//        'construct' method. The test-types use this value to assert that
+//         they are being constructed by the allocator.
+//
+//   'AllocatorConstructController' enforces the Singleton pattern since the
+//    test-types, test-allocator and test need to share the same controller
+//    object. A pointer to the global controller is returned by
+//   'getConstructController()'.
+//
+//----------------------------------------------------------------------------
+/*
+ * Usage: The following example checks that 'unordered_map::emplace(Args&&...)'
+ *        with 'Args = [CopyInsertable<1> const&, CopyInsertable<2>&&]'
+ *        calls 'alloc.construct(value_type*, Args&&...)' with the same types.
+ *
+ * // Typedefs for container
+ * using Key = CopyInsertable<1>;
+ * using Value = CopyInsertable<2>;
+ * using ValueTp = std::pair<const Key, Value>;
+ * using Alloc = ContainerTestAllocator<ValueTp, ValueTp>;
+ * using Map = std::unordered_map<Key, Value, std::hash<Key>, std::equal_to<Key>, Alloc>;
+ *
+ * // Get the global controller, reset it, and construct an allocator with
+ * // the controller.
+ * ConstructController* cc = getConstructController();
+ * cc->reset();
+ *
+ * // Create a Map and a Key and Value to insert. Note that the test-allocator
+ * // does not need to be given 'cc'.
+ * Map m;
+ * const Key k(1);
+ * Value v(1);
+ *
+ * // Tell the controller to expect a construction from the specified types.
+ * cc->expect<Key const&, Value&&>();
+ *
+ * // Emplace the objects into the container. 'Alloc.construct(p, UArgs...)'
+ * // will assert 'cc->check<UArgs&&>()' is true which will consume
+ * // the call to 'cc->expect<...>()'.
+ * m.emplace(k, std::move(v));
+ *
+ * // Assert that the "expect" was consumed by a matching "check" call within
+ * // Alloc.
+ * assert(!cc->unexpected());
+ *
+ */
+
+#include <cassert>
+#include <functional>
+#include <new>
+#include <utility>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER < 11
+#error This header requires C++11 or greater
+#endif
+
+namespace detail {
+// TypeID - Represent a unique identifier for a type. TypeID allows equality
+// comparisons between different types.
+struct TypeID {
+  friend bool operator==(TypeID const& LHS, TypeID const& RHS)
+  {return LHS.m_id == RHS.m_id; }
+  friend bool operator!=(TypeID const& LHS, TypeID const& RHS)
+  {return LHS.m_id != RHS.m_id; }
+private:
+  explicit constexpr TypeID(const int* xid) : m_id(xid) {}
+  const int* const m_id;
+  template <class T> friend class TypeInfo;
+};
+
+// TypeInfo - Represent information for the specified type 'T', including a
+// unique TypeID.
+template <class T>
+class TypeInfo {
+public:
+  typedef T value_type;
+  typedef TypeID ID;
+  static  ID const& GetID() { static ID id(&dummy_addr); return id; }
+
+private:
+  static const int dummy_addr;
+};
+
+template <class L, class R>
+inline bool operator==(TypeInfo<L> const&, TypeInfo<R> const&)
+{ return std::is_same<L, R>::value; }
+
+template <class L, class R>
+inline bool operator!=(TypeInfo<L> const& lhs, TypeInfo<R> const& rhs)
+{ return !(lhs == rhs); }
+
+template <class T>
+const int TypeInfo<T>::dummy_addr = 42;
+
+// makeTypeID - Return the TypeID for the specified type 'T'.
+template <class T>
+inline constexpr TypeID const& makeTypeID() { return TypeInfo<T>::GetID(); }
+
+template <class ...Args>
+struct ArgumentListID {};
+
+// makeArgumentID - Create and return a unique identifier for a given set
+// of arguments.
+template <class ...Args>
+inline constexpr TypeID const& makeArgumentID() {
+  return makeTypeID<ArgumentListID<Args...>>();
+}
+
+} // namespace detail
+
+//===----------------------------------------------------------------------===//
+//                        AllocatorConstructController
+//===----------------------------------------------------------------------===//
+
+struct AllocatorConstructController {
+  const detail::TypeID* m_expected_args;
+  bool m_allow_constructions;
+  bool m_allow_unchecked;
+  int m_expected_count;
+
+  void clear() {
+    m_expected_args = nullptr;
+    m_expected_count = -1;
+  }
+
+  // Check for and consume an expected construction added by 'expect'.
+  // Return true if the construction was expected and false otherwise.
+  // This should only be called by 'Allocator.construct'.
+  bool check(detail::TypeID const& tid) {
+    if (!m_expected_args) {
+      assert(m_allow_unchecked);
+      return m_allow_unchecked;
+    }
+    bool res = *m_expected_args == tid;
+    if (m_expected_count == -1 || --m_expected_count == -1)
+      m_expected_args = nullptr;
+    return res;
+  }
+
+  // Return true iff there is an unchecked construction expression.
+  bool unchecked() {
+    return m_expected_args != nullptr;
+  }
+
+  // Expect a call to Allocator::construct with Args that match 'tid'.
+  void expect(detail::TypeID const& tid) {
+    assert(!unchecked());
+    m_expected_args = &tid;
+  }
+
+  template <class ...Args>
+  void expect(int times = 1) {
+    assert(!unchecked());
+    assert(times > 0);
+    m_expected_count = times - 1;
+    m_expected_args = &detail::makeArgumentID<Args...>();
+  }
+  template <class ...Args>
+  bool check() {
+    return check(detail::makeArgumentID<Args...>());
+  }
+
+
+  // Return true iff the program is currently within a call to "Allocator::construct"
+  bool isInAllocatorConstruct() const {
+    return m_allow_constructions;
+  }
+
+  void inAllocatorConstruct(bool value = true) {
+    m_allow_constructions = value;
+  }
+
+  void allowUnchecked(bool value = true) {
+    m_allow_unchecked = value;
+  }
+
+  void reset() {
+    m_allow_constructions = false;
+    m_expected_args = nullptr;
+    m_allow_unchecked = false;
+    m_expected_count = -1;
+  }
+
+private:
+  friend AllocatorConstructController* getConstructController();
+  AllocatorConstructController()  { reset(); }
+  AllocatorConstructController(AllocatorConstructController const&);
+  AllocatorConstructController& operator=(AllocatorConstructController const&);
+};
+
+typedef AllocatorConstructController ConstructController;
+
+// getConstructController - Return the global allocator construction controller.
+inline ConstructController* getConstructController() {
+  static ConstructController c;
+  return &c;
+}
+
+template <class ...Args>
+struct ExpectConstructGuard {
+  ExpectConstructGuard(int N)  {
+    auto CC = getConstructController();
+    assert(!CC->unchecked());
+    CC->expect<Args...>(N);
+  }
+
+  ~ExpectConstructGuard() {
+    assert(!getConstructController()->unchecked());
+  }
+};
+
+//===----------------------------------------------------------------------===//
+//                       ContainerTestAllocator
+//===----------------------------------------------------------------------===//
+
+// ContainerTestAllocator - A STL allocator type that only allows 'construct'
+// and 'destroy' to be called for 'AllowConstructT' types. ContainerTestAllocator
+// uses the 'AllocatorConstructionController' interface.
+template <class T, class AllowConstructT>
+class ContainerTestAllocator
+{
+  struct InAllocatorConstructGuard {
+    ConstructController *m_cc;
+    bool m_old;
+    InAllocatorConstructGuard(ConstructController* cc) : m_cc(cc) {
+      if (m_cc) {
+        m_old = m_cc->isInAllocatorConstruct();
+        m_cc->inAllocatorConstruct(true);
+      }
+    }
+    ~InAllocatorConstructGuard() {
+      if (m_cc) m_cc->inAllocatorConstruct(m_old);
+    }
+  private:
+    InAllocatorConstructGuard(InAllocatorConstructGuard const&);
+    InAllocatorConstructGuard& operator=(InAllocatorConstructGuard const&);
+  };
+
+public:
+    typedef T value_type;
+
+    int construct_called;
+    int destroy_called;
+    ConstructController* controller;
+
+    ContainerTestAllocator() TEST_NOEXCEPT
+        : controller(getConstructController()) {}
+
+    explicit ContainerTestAllocator(ConstructController* c)
+       : controller(c)
+    {}
+
+    template <class U>
+    ContainerTestAllocator(ContainerTestAllocator<U, AllowConstructT> other) TEST_NOEXCEPT
+      : controller(other.controller)
+    {}
+
+    T* allocate(std::size_t n)
+    {
+        return static_cast<T*>(::operator new(n*sizeof(T)));
+    }
+
+    void deallocate(T* p, std::size_t)
+    {
+        return ::operator delete(static_cast<void*>(p));
+    }
+
+    template <class Up, class ...Args>
+    void construct(Up* p, Args&&... args) {
+      static_assert((std::is_same<Up, AllowConstructT>::value),
+                    "Only allowed to construct Up");
+      assert(controller->check<Args&&...>());
+      {
+        InAllocatorConstructGuard g(controller);
+        ::new ((void*)p) Up(std::forward<Args>(args)...);
+      }
+    }
+
+    template <class Up>
+    void destroy(Up* p) {
+      static_assert((std::is_same<Up, AllowConstructT>::value),
+                    "Only allowed to destroy Up");
+      {
+        InAllocatorConstructGuard g(controller);
+        p->~Up();
+      }
+    }
+
+    friend bool operator==(ContainerTestAllocator, ContainerTestAllocator) {return true;}
+    friend bool operator!=(ContainerTestAllocator x, ContainerTestAllocator y) {return !(x == y);}
+};
+
+
+namespace test_detail {
+typedef ContainerTestAllocator<int, int> A1;
+typedef std::allocator_traits<A1> A1T;
+typedef ContainerTestAllocator<float, int> A2;
+typedef std::allocator_traits<A2> A2T;
+
+static_assert(std::is_same<A1T::rebind_traits<float>, A2T>::value, "");
+static_assert(std::is_same<A2T::rebind_traits<int>, A1T>::value, "");
+} // end namespace test_detail
+
+//===----------------------------------------------------------------------===//
+//  'CopyInsertable', 'MoveInsertable' and 'EmplaceConstructible' test types
+//===----------------------------------------------------------------------===//
+
+template <int Dummy = 0>
+struct CopyInsertable {
+  int data;
+  mutable bool copied_once;
+  bool constructed_under_allocator;
+
+  explicit CopyInsertable(int val) : data(val), copied_once(false),
+                                     constructed_under_allocator(false) {
+    if (getConstructController()->isInAllocatorConstruct()) {
+      copied_once = true;
+      constructed_under_allocator = true;
+    }
+  }
+
+  CopyInsertable() : data(0), copied_once(false), constructed_under_allocator(true)
+  {
+    assert(getConstructController()->isInAllocatorConstruct());
+  }
+
+  CopyInsertable(CopyInsertable const& other) : data(other.data),
+                                                copied_once(true),
+                                                constructed_under_allocator(true) {
+    assert(getConstructController()->isInAllocatorConstruct());
+    assert(other.copied_once == false);
+    other.copied_once = true;
+  }
+
+  CopyInsertable(CopyInsertable& other) : data(other.data), copied_once(true),
+                                          constructed_under_allocator(true) {
+    assert(getConstructController()->isInAllocatorConstruct());
+    assert(other.copied_once == false);
+    other.copied_once = true;
+  }
+
+  CopyInsertable(CopyInsertable&& other) : CopyInsertable(other) {}
+
+  // Forgive pair for not downcasting this to an lvalue in its constructors.
+  CopyInsertable(CopyInsertable const && other) : CopyInsertable(other) {}
+
+
+  template <class ...Args>
+  CopyInsertable(Args&&...) {
+    assert(false);
+  }
+
+  ~CopyInsertable() {
+    assert(constructed_under_allocator == getConstructController()->isInAllocatorConstruct());
+  }
+
+  void reset(int value) {
+    data = value;
+    copied_once = false;
+    constructed_under_allocator = false;
+  }
+};
+
+template <int ID>
+bool operator==(CopyInsertable<ID> const& L, CopyInsertable<ID> const& R) {
+  return L.data == R.data;
+}
+
+
+template <int ID>
+bool operator!=(CopyInsertable<ID> const& L, CopyInsertable<ID> const& R) {
+  return L.data != R.data;
+}
+
+template <int ID>
+bool operator <(CopyInsertable<ID> const& L, CopyInsertable<ID> const& R) {
+  return L.data < R.data;
+}
+
+
+#ifdef _LIBCPP_BEGIN_NAMESPACE_STD
+_LIBCPP_BEGIN_NAMESPACE_STD
+#else
+namespace std {
+#endif
+  template <int ID>
+  struct hash< ::CopyInsertable<ID> > {
+    typedef ::CopyInsertable<ID> argument_type;
+    typedef size_t result_type;
+
+    size_t operator()(argument_type const& arg) const {
+      return arg.data;
+    }
+  };
+  template <class T, class Alloc>
+  class vector;
+  template <class T, class Alloc>
+  class deque;
+  template <class T, class Alloc>
+  class list;
+  template <class _Key, class _Value, class _Less, class _Alloc>
+  class map;
+  template <class _Key, class _Value, class _Less, class _Alloc>
+  class multimap;
+  template <class _Value, class _Less, class _Alloc>
+  class set;
+  template <class _Value, class _Less, class _Alloc>
+  class multiset;
+  template <class _Key, class _Value, class _Hash, class _Equals, class _Alloc>
+  class unordered_map;
+  template <class _Key, class _Value, class _Hash, class _Equals, class _Alloc>
+  class unordered_multimap;
+  template <class _Value, class _Hash, class _Equals, class _Alloc>
+  class unordered_set;
+  template <class _Value, class _Hash, class _Equals, class _Alloc>
+  class unordered_multiset;
+
+#ifdef _LIBCPP_END_NAMESPACE_STD
+_LIBCPP_END_NAMESPACE_STD
+#else
+} // end namespace std
+#endif
+
+// TCT - Test container type
+namespace TCT {
+
+template <class T = CopyInsertable<1>>
+using vector = std::vector<T, ContainerTestAllocator<T, T> >;
+template <class T = CopyInsertable<1>>
+using deque = std::deque<T, ContainerTestAllocator<T, T> >;
+template <class T = CopyInsertable<1>>
+using list = std::list<T, ContainerTestAllocator<T, T> >;
+
+template <class Key = CopyInsertable<1>, class Value = CopyInsertable<2>,
+          class ValueTp = std::pair<const Key, Value> >
+using unordered_map =
+      std::unordered_map<Key, Value, std::hash<Key>, std::equal_to<Key>,
+                              ContainerTestAllocator<ValueTp, ValueTp> >;
+
+template <class Key = CopyInsertable<1>, class Value = CopyInsertable<2>,
+          class ValueTp = std::pair<const Key, Value> >
+using map =
+      std::map<Key, Value, std::less<Key>,
+                              ContainerTestAllocator<ValueTp, ValueTp> >;
+
+template <class Key = CopyInsertable<1>, class Value = CopyInsertable<2>,
+          class ValueTp = std::pair<const Key, Value> >
+using unordered_multimap =
+      std::unordered_multimap<Key, Value, std::hash<Key>, std::equal_to<Key>,
+                                   ContainerTestAllocator<ValueTp, ValueTp> >;
+
+template <class Key = CopyInsertable<1>, class Value = CopyInsertable<2>,
+          class ValueTp = std::pair<const Key, Value> >
+using multimap =
+      std::multimap<Key, Value, std::less<Key>,
+                              ContainerTestAllocator<ValueTp, ValueTp> >;
+
+template <class Value = CopyInsertable<1> >
+using unordered_set =
+  std::unordered_set<Value, std::hash<Value>, std::equal_to<Value>,
+                               ContainerTestAllocator<Value, Value> >;
+
+template <class Value = CopyInsertable<1> >
+using set =
+    std::set<Value, std::less<Value>, ContainerTestAllocator<Value, Value> >;
+
+template <class Value = CopyInsertable<1> >
+using unordered_multiset =
+    std::unordered_multiset<Value, std::hash<Value>, std::equal_to<Value>,
+                                    ContainerTestAllocator<Value, Value> >;
+
+template <class Value = CopyInsertable<1> >
+using multiset =
+    std::multiset<Value, std::less<Value>, ContainerTestAllocator<Value, Value> >;
+
+} // end namespace TCT
+
+#endif // SUPPORT_CONTAINER_TEST_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/support/controlled_allocators.h b/app/src/main/cpp/libcxx/test/support/controlled_allocators.h
new file mode 100644
index 0000000..1144ae4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/controlled_allocators.h
@@ -0,0 +1,508 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_CONTROLLED_ALLOCATORS_H
+#define SUPPORT_CONTROLLED_ALLOCATORS_H
+
+#include <memory>
+#include <type_traits>
+#include <cstddef>
+#include <cstdlib>
+#include <cstring>
+#include <cstdint>
+#include <cassert>
+#include <new>
+
+#include "test_macros.h"
+#include "type_id.h"
+
+#if TEST_STD_VER < 11
+#error This header requires C++11 or greater
+#endif
+
+struct AllocController;
+    // 'AllocController' is a concrete type that instruments and controls the
+    // behavior of test allocators.
+
+template <class T, size_t ID = 0>
+class CountingAllocator;
+    // 'CountingAllocator' is an basic implementation of the 'Allocator'
+    // requirements that use the 'AllocController' interface.
+
+template <class T>
+class MinAlignAllocator;
+    // 'MinAlignAllocator' is an instrumented test type which implements the
+    // 'Allocator' requirements. 'MinAlignAllocator' ensures that it *never*
+    // returns a pointer to over-aligned storage. For example
+    // 'MinAlignPointer<char>{}.allocate(...)' will never a 2-byte aligned
+    // pointer.
+
+template <class T>
+class NullAllocator;
+    // 'NullAllocator' is an instrumented test type which implements the
+    // 'Allocator' requirements except that 'allocator' and 'deallocate' are
+    // nops.
+
+
+#define DISALLOW_COPY(Type) \
+  Type(Type const&) = delete; \
+  Type& operator=(Type const&) = delete
+
+constexpr std::size_t MaxAlignV = alignof(std::max_align_t);
+
+struct TestException {};
+
+struct AllocController {
+    int copy_constructed = 0;
+    int move_constructed = 0;
+
+    int alive = 0;
+    int alloc_count = 0;
+    int dealloc_count = 0;
+    int is_equal_count = 0;
+
+    std::size_t alive_size;
+    std::size_t allocated_size;
+    std::size_t deallocated_size;
+
+    std::size_t last_size = 0;
+    std::size_t last_align = 0;
+    void * last_pointer = 0;
+
+    std::size_t last_alloc_size = 0;
+    std::size_t last_alloc_align = 0;
+    void * last_alloc_pointer = nullptr;
+
+    std::size_t last_dealloc_size = 0;
+    std::size_t last_dealloc_align = 0;
+    void * last_dealloc_pointer = nullptr;
+
+    bool throw_on_alloc = false;
+
+    int construct_called = 0;
+    void *last_construct_pointer = nullptr;
+    TypeID const* last_construct_alloc = nullptr;
+    TypeID const* last_construct_type = nullptr;
+    TypeID const* last_construct_args = nullptr;
+
+    int destroy_called = 0;
+    void *last_destroy_pointer = nullptr;
+    TypeID const* last_destroy_alloc = nullptr;
+    TypeID const* last_destroy_type = nullptr;
+
+    AllocController() = default;
+
+    void countAlloc(void* p, size_t s, size_t a) {
+        ++alive;
+        ++alloc_count;
+        alive_size += s;
+        allocated_size += s;
+        last_pointer = last_alloc_pointer = p;
+        last_size = last_alloc_size = s;
+        last_align = last_alloc_align = a;
+    }
+
+    void countDealloc(void* p, size_t s, size_t a) {
+        --alive;
+        ++dealloc_count;
+        alive_size -= s;
+        deallocated_size += s;
+        last_pointer = last_dealloc_pointer = p;
+        last_size = last_dealloc_size = s;
+        last_align = last_dealloc_align = a;
+    }
+
+    template <class ...Args, class Alloc, class Tp>
+    void countConstruct(Alloc const&, Tp *p) {
+      ++construct_called;
+      last_construct_pointer = p;
+      last_construct_alloc = &makeTypeID<Alloc>();
+      last_construct_type = &makeTypeID<Tp>();
+      last_construct_args = &makeArgumentID<Args...>();
+    }
+
+    template <class Alloc, class Tp>
+    void countDestroy(Alloc const&, Tp *p) {
+      ++destroy_called;
+      last_destroy_alloc = &makeTypeID<Alloc>();
+      last_destroy_type = &makeTypeID<Tp>();
+      last_destroy_pointer = p;
+    }
+
+    void reset() { std::memset(this, 0, sizeof(*this)); }
+    void resetConstructDestroy() {
+      construct_called = 0;
+      last_construct_pointer = nullptr;
+      last_construct_alloc = last_construct_args = last_construct_type = nullptr;
+      destroy_called = 0;
+      last_destroy_alloc = nullptr;
+      last_destroy_pointer = nullptr;
+    }
+public:
+    bool checkAlloc(void* p, size_t s, size_t a) const {
+        return p == last_alloc_pointer &&
+               s == last_alloc_size &&
+               a == last_alloc_align;
+    }
+
+    bool checkAlloc(void* p, size_t s) const {
+        return p == last_alloc_pointer &&
+               s == last_alloc_size;
+    }
+
+    bool checkAllocAtLeast(void* p, size_t s, size_t a) const {
+        return p == last_alloc_pointer &&
+               s <= last_alloc_size &&
+               a <= last_alloc_align;
+    }
+
+    bool checkAllocAtLeast(void* p, size_t s) const {
+        return p == last_alloc_pointer &&
+               s <= last_alloc_size;
+    }
+
+    bool checkDealloc(void* p, size_t s, size_t a) const {
+        return p == last_dealloc_pointer &&
+               s == last_dealloc_size &&
+               a == last_dealloc_align;
+    }
+
+    bool checkDealloc(void* p, size_t s) const {
+        return p == last_dealloc_pointer &&
+               s == last_dealloc_size;
+    }
+
+    bool checkDeallocMatchesAlloc() const {
+        return last_dealloc_pointer == last_alloc_pointer &&
+               last_dealloc_size == last_alloc_size &&
+               last_dealloc_align == last_alloc_align;
+    }
+
+    template <class ...Args, class Alloc, class Tp>
+    bool checkConstruct(Alloc const&, Tp *p) const {
+        auto expectAlloc = &makeTypeID<Alloc>();
+        auto expectTp = &makeTypeID<Tp>();
+        auto expectArgs = &makeArgumentID<Args...>();
+        if (last_construct_pointer != p)
+            return false;
+        if (last_construct_alloc != expectAlloc)
+            return false;
+        if (last_construct_type != expectTp)
+            return false;
+        if (last_construct_args != expectArgs)
+            return false;
+        return true;
+    }
+
+    template <class Alloc, class Tp>
+    bool checkDestroy(Alloc const&, Tp *p) const {
+      return last_destroy_pointer == p &&
+          last_destroy_alloc == &makeTypeID<Alloc>() &&
+          last_destroy_type == &makeTypeID<Tp>();
+    }
+
+    bool checkDestroyMatchesConstruct() const {
+      return last_destroy_pointer == last_construct_pointer &&
+          last_destroy_type == last_construct_type;
+    }
+
+    void countIsEqual() {
+        ++is_equal_count;
+    }
+
+    bool checkIsEqualCalledEq(int n) const {
+        return is_equal_count == n;
+    }
+private:
+  DISALLOW_COPY(AllocController);
+};
+
+template <class T, size_t ID>
+class CountingAllocator
+{
+public:
+    typedef T value_type;
+    typedef T* pointer;
+
+    template <class U>
+    struct rebind { using other = CountingAllocator<U, ID>; };
+
+    CountingAllocator() = delete;
+    explicit CountingAllocator(AllocController& PP) : P(&PP) {}
+
+    CountingAllocator(CountingAllocator const& other) : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    CountingAllocator(CountingAllocator&& other) : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    template <class U>
+    CountingAllocator(CountingAllocator<U, ID> const& other) TEST_NOEXCEPT : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    template <class U>
+    CountingAllocator(CountingAllocator<U, ID>&& other) TEST_NOEXCEPT : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    T* allocate(std::size_t n)
+    {
+        void* ret = ::operator new(n*sizeof(T));
+        P->countAlloc(ret, n*sizeof(T), alignof(T));
+        return static_cast<T*>(ret);
+    }
+
+    void deallocate(T* p, std::size_t n)
+    {
+        void* vp = static_cast<void*>(p);
+        P->countDealloc(vp, n*sizeof(T), alignof(T));
+        ::operator delete(vp);
+    }
+
+    template <class U, class ...Args>
+    void construct(U *p, Args&&... args) {
+      ::new ((void*)p) U(std::forward<Args>(args)...);
+      P->countConstruct<Args&&...>(*this, p);
+    }
+
+    template <class U>
+    void destroy(U* p) {
+      p->~U();
+      P->countDestroy(*this, p);
+    }
+
+    AllocController& getController() const { return *P; }
+
+private:
+    template <class Tp, size_t XID> friend class CountingAllocator;
+    AllocController *P;
+};
+
+
+template <size_t ID>
+class CountingAllocator<void, ID>
+{
+public:
+    typedef void* pointer;
+    typedef const void* const_pointer;
+    typedef void value_type;
+
+    template <class U>
+    struct rebind { using other = CountingAllocator<U, ID>; };
+
+    CountingAllocator() = delete;
+    explicit CountingAllocator(AllocController& PP) : P(&PP) {}
+
+    CountingAllocator(CountingAllocator const& other) : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    CountingAllocator(CountingAllocator&& other) : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    template <class U>
+    CountingAllocator(CountingAllocator<U, ID> const& other) TEST_NOEXCEPT : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    template <class U>
+    CountingAllocator(CountingAllocator<U, ID>&& other) TEST_NOEXCEPT : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    void construct(...) = delete;
+    void destroy(void*) = delete;
+
+    AllocController& getController() const { return *P; }
+
+private:
+    template <class Tp, size_t> friend class CountingAllocator;
+    AllocController *P;
+};
+
+template <class T, class U, size_t ID>
+inline bool operator==(CountingAllocator<T, ID> const& x,
+                       CountingAllocator<U, ID> const& y) {
+    return &x.getController() == &y.getController();
+}
+
+template <class T, class U, size_t ID>
+inline bool operator!=(CountingAllocator<T, ID> const& x,
+                       CountingAllocator<U, ID> const& y) {
+    return !(x == y);
+}
+
+template <class T>
+class MinAlignedAllocator
+{
+public:
+    typedef T value_type;
+    typedef T* pointer;
+
+    MinAlignedAllocator() = delete;
+
+    explicit MinAlignedAllocator(AllocController& R) : P(&R) {}
+
+    MinAlignedAllocator(MinAlignedAllocator const& other) : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    MinAlignedAllocator(MinAlignedAllocator&& other) : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    template <class U>
+    MinAlignedAllocator(MinAlignedAllocator<U> const& other) TEST_NOEXCEPT : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    template <class U>
+    MinAlignedAllocator(MinAlignedAllocator<U>&& other) TEST_NOEXCEPT : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    T* allocate(std::size_t n) {
+        char* aligned_ptr = (char*)::operator new(alloc_size(n*sizeof(T)));
+        assert(is_max_aligned(aligned_ptr));
+
+        char* unaligned_ptr = aligned_ptr + alignof(T);
+        assert(is_min_aligned(unaligned_ptr));
+
+        P->countAlloc(unaligned_ptr, n * sizeof(T), alignof(T));
+
+        return ((T*)unaligned_ptr);
+    }
+
+    void deallocate(T* p, std::size_t n) {
+        assert(is_min_aligned(p));
+
+        char* aligned_ptr = ((char*)p) - alignof(T);
+        assert(is_max_aligned(aligned_ptr));
+
+        P->countDealloc(p, n*sizeof(T), alignof(T));
+
+        return ::operator delete(static_cast<void*>(aligned_ptr));
+    }
+
+    template <class U, class ...Args>
+    void construct(U *p, Args&&... args) {
+      auto *c = ::new ((void*)p) U(std::forward<Args>(args)...);
+      P->countConstruct<Args&&...>(*this, p);
+    }
+
+    template <class U>
+    void destroy(U* p) {
+      p->~U();
+      P->countDestroy(*this, p);
+    }
+
+    AllocController& getController() const { return *P; }
+
+private:
+    static const std::size_t BlockSize = alignof(std::max_align_t);
+
+    static std::size_t alloc_size(std::size_t s) {
+        std::size_t bytes = (s + BlockSize - 1) & ~(BlockSize - 1);
+        bytes += BlockSize;
+        assert(bytes % BlockSize == 0);
+        return bytes;
+    }
+
+    static bool is_max_aligned(void* p) {
+        return reinterpret_cast<std::uintptr_t>(p) % BlockSize == 0;
+    }
+
+    static bool is_min_aligned(void* p) {
+        if (alignof(T) == BlockSize) {
+            return is_max_aligned(p);
+        } else {
+            return reinterpret_cast<std::uintptr_t>(p) % BlockSize == alignof(T);
+        }
+    }
+
+    template <class Tp> friend class MinAlignedAllocator;
+    mutable AllocController *P;
+};
+
+
+template <class T, class U>
+inline bool operator==(MinAlignedAllocator<T> const& x,
+                       MinAlignedAllocator<U> const& y) {
+    return &x.getController() == &y.getController();
+}
+
+template <class T, class U>
+inline bool operator!=(MinAlignedAllocator<T> const& x,
+                       MinAlignedAllocator<U> const& y) {
+    return !(x == y);
+}
+
+template <class T>
+class NullAllocator
+{
+public:
+    typedef T value_type;
+    typedef T* pointer;
+    NullAllocator() = delete;
+    explicit NullAllocator(AllocController& PP) : P(&PP) {}
+
+    NullAllocator(NullAllocator const& other) : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    NullAllocator(NullAllocator&& other) : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    template <class U>
+    NullAllocator(NullAllocator<U> const& other) TEST_NOEXCEPT : P(other.P) {
+        P->copy_constructed += 1;
+    }
+
+    template <class U>
+    NullAllocator(NullAllocator<U>&& other) TEST_NOEXCEPT : P(other.P) {
+        P->move_constructed += 1;
+    }
+
+    T* allocate(std::size_t n)
+    {
+        P->countAlloc(nullptr, n*sizeof(T), alignof(T));
+        return nullptr;
+    }
+
+    void deallocate(T* p, std::size_t n)
+    {
+        void* vp = static_cast<void*>(p);
+        P->countDealloc(vp, n*sizeof(T), alignof(T));
+    }
+
+    AllocController& getController() const { return *P; }
+
+private:
+    template <class Tp> friend class NullAllocator;
+    AllocController *P;
+};
+
+template <class T, class U>
+inline bool operator==(NullAllocator<T> const& x,
+                       NullAllocator<U> const& y) {
+    return &x.getController() == &y.getController();
+}
+
+template <class T, class U>
+inline bool operator!=(NullAllocator<T> const& x,
+                       NullAllocator<U> const& y) {
+    return !(x == y);
+}
+
+
+#endif /* SUPPORT_CONTROLLED_ALLOCATORS_H */
diff --git a/app/src/main/cpp/libcxx/test/support/copy_move_types.h b/app/src/main/cpp/libcxx/test/support/copy_move_types.h
new file mode 100644
index 0000000..2fa42dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/copy_move_types.h
@@ -0,0 +1,345 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_STD_UTILITIES_TUPLE_CNSTR_TYPES_H
+#define LIBCXX_TEST_STD_UTILITIES_TUPLE_CNSTR_TYPES_H
+
+#include "test_allocator.h"
+#include <type_traits>
+#include <tuple>
+
+// Types that can be used to test copy/move operations
+
+struct MutableCopy {
+  int val;
+  bool alloc_constructed{false};
+
+  constexpr MutableCopy() = default;
+  constexpr MutableCopy(int _val) : val(_val) {}
+  constexpr MutableCopy(MutableCopy&) = default;
+  constexpr MutableCopy(const MutableCopy&) = delete;
+
+  constexpr MutableCopy(std::allocator_arg_t, const test_allocator<int>&, MutableCopy& o)
+      : val(o.val), alloc_constructed(true) {}
+};
+
+template <>
+struct std::uses_allocator<MutableCopy, test_allocator<int>> : std::true_type {};
+
+struct ConstCopy {
+  int val;
+  bool alloc_constructed{false};
+
+  constexpr ConstCopy() = default;
+  constexpr ConstCopy(int _val) : val(_val) {}
+  constexpr ConstCopy(const ConstCopy&) = default;
+  constexpr ConstCopy(ConstCopy&) = delete;
+
+  constexpr ConstCopy(std::allocator_arg_t, const test_allocator<int>&, const ConstCopy& o)
+      : val(o.val), alloc_constructed(true) {}
+};
+
+template <>
+struct std::uses_allocator<ConstCopy, test_allocator<int>> : std::true_type {};
+
+struct MutableMove {
+  int val;
+  bool alloc_constructed{false};
+
+  constexpr MutableMove() = default;
+  constexpr MutableMove(int _val) : val(_val) {}
+  constexpr MutableMove(MutableMove&&) = default;
+  constexpr MutableMove(const MutableMove&&) = delete;
+
+  constexpr MutableMove(std::allocator_arg_t, const test_allocator<int>&, MutableMove&& o)
+      : val(o.val), alloc_constructed(true) {}
+};
+
+template <>
+struct std::uses_allocator<MutableMove, test_allocator<int>> : std::true_type {};
+
+struct ConstMove {
+  int val;
+  bool alloc_constructed{false};
+
+  constexpr ConstMove() = default;
+  constexpr ConstMove(int _val) : val(_val) {}
+  constexpr ConstMove(const ConstMove&& o) : val(o.val) {}
+  constexpr ConstMove(ConstMove&&) = delete;
+
+  constexpr ConstMove(std::allocator_arg_t, const test_allocator<int>&, const ConstMove&& o)
+      : val(o.val), alloc_constructed(true) {}
+};
+
+template <>
+struct std::uses_allocator<ConstMove, test_allocator<int>> : std::true_type {};
+
+template <class T>
+struct ConvertibleFrom {
+  T v;
+  bool alloc_constructed{false};
+
+  constexpr ConvertibleFrom() = default;
+  constexpr ConvertibleFrom(T& _v)
+    requires(std::is_constructible_v<T, T&>)
+  : v(_v) {}
+  constexpr ConvertibleFrom(const T& _v)
+    requires(std::is_constructible_v<T, const T&> && !std::is_const_v<T>)
+  : v(_v) {}
+  constexpr ConvertibleFrom(T&& _v)
+    requires(std::is_constructible_v<T, T &&>)
+  : v(std::move(_v)) {}
+  constexpr ConvertibleFrom(const T&& _v)
+    requires(std::is_constructible_v<T, const T &&> && !std::is_const_v<T>)
+  : v(std::move(_v)) {}
+
+  template <class U>
+    requires std::is_constructible_v<ConvertibleFrom, U&&>
+  constexpr ConvertibleFrom(std::allocator_arg_t, const test_allocator<int>&, U&& _u)
+      : ConvertibleFrom{std::forward<U>(_u)} {
+    alloc_constructed = true;
+  }
+};
+
+template <class T>
+struct std::uses_allocator<ConvertibleFrom<T>, test_allocator<int>> : std::true_type {};
+
+template <class T>
+struct ExplicitConstructibleFrom {
+  T v;
+  bool alloc_constructed{false};
+
+  constexpr explicit ExplicitConstructibleFrom() = default;
+  constexpr explicit ExplicitConstructibleFrom(T& _v)
+    requires(std::is_constructible_v<T, T&>)
+  : v(_v) {}
+  constexpr explicit ExplicitConstructibleFrom(const T& _v)
+    requires(std::is_constructible_v<T, const T&> && !std::is_const_v<T>)
+  : v(_v) {}
+  constexpr explicit ExplicitConstructibleFrom(T&& _v)
+    requires(std::is_constructible_v<T, T &&>)
+  : v(std::move(_v)) {}
+  constexpr explicit ExplicitConstructibleFrom(const T&& _v)
+    requires(std::is_constructible_v<T, const T &&> && !std::is_const_v<T>)
+  : v(std::move(_v)) {}
+
+  template <class U>
+    requires std::is_constructible_v<ExplicitConstructibleFrom, U&&>
+  constexpr ExplicitConstructibleFrom(std::allocator_arg_t, const test_allocator<int>&, U&& _u)
+      : ExplicitConstructibleFrom{std::forward<U>(_u)} {
+    alloc_constructed = true;
+  }
+};
+
+template <class T>
+struct std::uses_allocator<ExplicitConstructibleFrom<T>, test_allocator<int>> : std::true_type {};
+
+struct TracedCopyMove {
+  int nonConstCopy = 0;
+  int constCopy = 0;
+  int nonConstMove = 0;
+  int constMove = 0;
+  bool alloc_constructed = false;
+
+  constexpr TracedCopyMove() = default;
+  constexpr TracedCopyMove(const TracedCopyMove& other)
+      : nonConstCopy(other.nonConstCopy), constCopy(other.constCopy + 1), nonConstMove(other.nonConstMove),
+        constMove(other.constMove) {}
+  constexpr TracedCopyMove(TracedCopyMove& other)
+      : nonConstCopy(other.nonConstCopy + 1), constCopy(other.constCopy), nonConstMove(other.nonConstMove),
+        constMove(other.constMove) {}
+
+  constexpr TracedCopyMove(TracedCopyMove&& other)
+      : nonConstCopy(other.nonConstCopy), constCopy(other.constCopy), nonConstMove(other.nonConstMove + 1),
+        constMove(other.constMove) {}
+
+  constexpr TracedCopyMove(const TracedCopyMove&& other)
+      : nonConstCopy(other.nonConstCopy), constCopy(other.constCopy), nonConstMove(other.nonConstMove),
+        constMove(other.constMove + 1) {}
+
+  template <class U>
+    requires std::is_constructible_v<TracedCopyMove, U&&>
+  constexpr TracedCopyMove(std::allocator_arg_t, const test_allocator<int>&, U&& _u)
+      : TracedCopyMove{std::forward<U>(_u)} {
+    alloc_constructed = true;
+  }
+};
+
+template <>
+struct std::uses_allocator<TracedCopyMove, test_allocator<int>> : std::true_type {};
+
+// If the constructor tuple(tuple<UTyles...>&) is not available,
+// the fallback call to `tuple(const tuple&) = default;` or any other
+// constructor that takes const ref would increment the constCopy.
+inline constexpr bool nonConstCopyCtrCalled(const TracedCopyMove& obj) {
+  return obj.nonConstCopy == 1 && obj.constCopy == 0 && obj.constMove == 0 && obj.nonConstMove == 0;
+}
+
+// If the constructor tuple(const tuple<UTyles...>&&) is not available,
+// the fallback call to `tuple(const tuple&) = default;` or any other
+// constructor that takes const ref would increment the constCopy.
+inline constexpr bool constMoveCtrCalled(const TracedCopyMove& obj) {
+  return obj.nonConstMove == 0 && obj.constMove == 1 && obj.constCopy == 0 && obj.nonConstCopy == 0;
+}
+
+struct NoConstructorFromInt {};
+
+struct CvtFromTupleRef : TracedCopyMove {
+  constexpr CvtFromTupleRef() = default;
+  constexpr CvtFromTupleRef(std::tuple<CvtFromTupleRef>& other)
+      : TracedCopyMove(static_cast<TracedCopyMove&>(std::get<0>(other))) {}
+};
+
+struct ExplicitCtrFromTupleRef : TracedCopyMove {
+  constexpr explicit ExplicitCtrFromTupleRef() = default;
+  constexpr explicit ExplicitCtrFromTupleRef(std::tuple<ExplicitCtrFromTupleRef>& other)
+      : TracedCopyMove(static_cast<TracedCopyMove&>(std::get<0>(other))) {}
+};
+
+struct CvtFromConstTupleRefRef : TracedCopyMove {
+  constexpr CvtFromConstTupleRefRef() = default;
+  constexpr CvtFromConstTupleRefRef(const std::tuple<CvtFromConstTupleRefRef>&& other)
+      : TracedCopyMove(static_cast<const TracedCopyMove&&>(std::get<0>(other))) {}
+};
+
+struct ExplicitCtrFromConstTupleRefRef : TracedCopyMove {
+  constexpr explicit ExplicitCtrFromConstTupleRefRef() = default;
+  constexpr explicit ExplicitCtrFromConstTupleRefRef(std::tuple<const ExplicitCtrFromConstTupleRefRef>&& other)
+      : TracedCopyMove(static_cast<const TracedCopyMove&&>(std::get<0>(other))) {}
+};
+
+template <class T>
+void conversion_test(T);
+
+template <class T, class... Args>
+concept ImplicitlyConstructible = requires(Args&&... args) { conversion_test<T>({std::forward<Args>(args)...}); };
+
+struct CopyAssign {
+  int val;
+
+  constexpr CopyAssign() = default;
+  constexpr CopyAssign(int v) : val(v) {}
+
+  constexpr CopyAssign& operator=(const CopyAssign&) = default;
+
+  constexpr const CopyAssign& operator=(const CopyAssign&) const = delete;
+  constexpr CopyAssign& operator=(CopyAssign&&) = delete;
+  constexpr const CopyAssign& operator=(CopyAssign&&) const = delete;
+};
+
+struct ConstCopyAssign {
+  mutable int val;
+
+  constexpr ConstCopyAssign() = default;
+  constexpr ConstCopyAssign(int v) : val(v) {}
+
+  constexpr const ConstCopyAssign& operator=(const ConstCopyAssign& other) const {
+    val = other.val;
+    return *this;
+  }
+
+  constexpr ConstCopyAssign& operator=(const ConstCopyAssign&) = delete;
+  constexpr ConstCopyAssign& operator=(ConstCopyAssign&&) = delete;
+  constexpr const ConstCopyAssign& operator=(ConstCopyAssign&&) const = delete;
+};
+
+struct MoveAssign {
+  int val;
+
+  constexpr MoveAssign() = default;
+  constexpr MoveAssign(int v) : val(v) {}
+
+  constexpr MoveAssign& operator=(MoveAssign&&) = default;
+
+  constexpr MoveAssign& operator=(const MoveAssign&) = delete;
+  constexpr const MoveAssign& operator=(const MoveAssign&) const = delete;
+  constexpr const MoveAssign& operator=(MoveAssign&&) const = delete;
+};
+
+struct ConstMoveAssign {
+  mutable int val;
+
+  constexpr ConstMoveAssign() = default;
+  constexpr ConstMoveAssign(int v) : val(v) {}
+
+  constexpr const ConstMoveAssign& operator=(ConstMoveAssign&& other) const {
+    val = other.val;
+    return *this;
+  }
+
+  constexpr ConstMoveAssign& operator=(const ConstMoveAssign&) = delete;
+  constexpr const ConstMoveAssign& operator=(const ConstMoveAssign&) const = delete;
+  constexpr ConstMoveAssign& operator=(ConstMoveAssign&&) = delete;
+};
+
+template <class T>
+struct AssignableFrom {
+  T v;
+
+  constexpr AssignableFrom() = default;
+
+  template <class U>
+  constexpr AssignableFrom(U&& u)
+    requires std::is_constructible_v<T, U&&>
+  : v(std::forward<U>(u)) {}
+
+  constexpr AssignableFrom& operator=(const T& t)
+    requires std::is_copy_assignable_v<T>
+  {
+    v = t;
+    return *this;
+  }
+
+  constexpr AssignableFrom& operator=(T&& t)
+    requires std::is_move_assignable_v<T>
+  {
+    v = std::move(t);
+    return *this;
+  }
+
+  constexpr const AssignableFrom& operator=(const T& t) const
+    requires std::is_assignable_v<const T&, const T&>
+  {
+    v = t;
+    return *this;
+  }
+
+  constexpr const AssignableFrom& operator=(T&& t) const
+    requires std::is_assignable_v<const T&, T&&>
+  {
+    v = std::move(t);
+    return *this;
+  }
+};
+
+struct TracedAssignment {
+  int copyAssign = 0;
+  mutable int constCopyAssign = 0;
+  int moveAssign = 0;
+  mutable int constMoveAssign = 0;
+
+  constexpr TracedAssignment() = default;
+
+  constexpr TracedAssignment& operator=(const TracedAssignment&) {
+    copyAssign++;
+    return *this;
+  }
+  constexpr const TracedAssignment& operator=(const TracedAssignment&) const {
+    constCopyAssign++;
+    return *this;
+  }
+  constexpr TracedAssignment& operator=(TracedAssignment&&) {
+    moveAssign++;
+    return *this;
+  }
+  constexpr const TracedAssignment& operator=(TracedAssignment&&) const {
+    constMoveAssign++;
+    return *this;
+  }
+};
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/count_new.h b/app/src/main/cpp/libcxx/test/support/count_new.h
new file mode 100644
index 0000000..fc53cd6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/count_new.h
@@ -0,0 +1,538 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef COUNT_NEW_H
+#define COUNT_NEW_H
+
+# include <cstdlib>
+# include <cassert>
+# include <new>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if defined(TEST_HAS_SANITIZERS)
+#define DISABLE_NEW_COUNT
+#endif
+
+namespace detail
+{
+   TEST_NORETURN
+   inline void throw_bad_alloc_helper() {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+       throw std::bad_alloc();
+#else
+       std::abort();
+#endif
+   }
+}
+
+class MemCounter
+{
+public:
+    // Make MemCounter super hard to accidentally construct or copy.
+    class MemCounterCtorArg_ {};
+    explicit MemCounter(MemCounterCtorArg_) { reset(); }
+
+private:
+    MemCounter(MemCounter const &);
+    MemCounter & operator=(MemCounter const &);
+
+public:
+    // All checks return true when disable_checking is enabled.
+    static const bool disable_checking;
+
+    // Disallow any allocations from occurring. Useful for testing that
+    // code doesn't perform any allocations.
+    bool disable_allocations;
+
+    // number of allocations to throw after. Default (unsigned)-1. If
+    // throw_after has the default value it will never be decremented.
+    static const unsigned never_throw_value = static_cast<unsigned>(-1);
+    unsigned throw_after;
+
+    int outstanding_new;
+    int new_called;
+    int delete_called;
+    int aligned_new_called;
+    int aligned_delete_called;
+    std::size_t last_new_size;
+    std::size_t last_new_align;
+    std::size_t last_delete_align;
+
+    int outstanding_array_new;
+    int new_array_called;
+    int delete_array_called;
+    int aligned_new_array_called;
+    int aligned_delete_array_called;
+    std::size_t last_new_array_size;
+    std::size_t last_new_array_align;
+    std::size_t last_delete_array_align;
+
+public:
+    void newCalled(std::size_t s)
+    {
+        assert(disable_allocations == false);
+        assert(s);
+        if (throw_after == 0) {
+            throw_after = never_throw_value;
+            detail::throw_bad_alloc_helper();
+        } else if (throw_after != never_throw_value) {
+            --throw_after;
+        }
+        ++new_called;
+        ++outstanding_new;
+        last_new_size = s;
+    }
+
+    void alignedNewCalled(std::size_t s, std::size_t a) {
+      newCalled(s);
+      ++aligned_new_called;
+      last_new_align = a;
+    }
+
+    void deleteCalled(void * p)
+    {
+        assert(p);
+        --outstanding_new;
+        ++delete_called;
+    }
+
+    void alignedDeleteCalled(void *p, std::size_t a) {
+      deleteCalled(p);
+      ++aligned_delete_called;
+      last_delete_align = a;
+    }
+
+    void newArrayCalled(std::size_t s)
+    {
+        assert(disable_allocations == false);
+        assert(s);
+        if (throw_after == 0) {
+            throw_after = never_throw_value;
+            detail::throw_bad_alloc_helper();
+        } else {
+            // don't decrement throw_after here. newCalled will end up doing that.
+        }
+        ++outstanding_array_new;
+        ++new_array_called;
+        last_new_array_size = s;
+    }
+
+    void alignedNewArrayCalled(std::size_t s, std::size_t a) {
+      newArrayCalled(s);
+      ++aligned_new_array_called;
+      last_new_array_align = a;
+    }
+
+    void deleteArrayCalled(void * p)
+    {
+        assert(p);
+        --outstanding_array_new;
+        ++delete_array_called;
+    }
+
+    void alignedDeleteArrayCalled(void * p, std::size_t a) {
+      deleteArrayCalled(p);
+      ++aligned_delete_array_called;
+      last_delete_array_align = a;
+    }
+
+    void disableAllocations()
+    {
+        disable_allocations = true;
+    }
+
+    void enableAllocations()
+    {
+        disable_allocations = false;
+    }
+
+    void reset()
+    {
+        disable_allocations = false;
+        throw_after = never_throw_value;
+
+        outstanding_new = 0;
+        new_called = 0;
+        delete_called = 0;
+        aligned_new_called = 0;
+        aligned_delete_called = 0;
+        last_new_size = 0;
+        last_new_align = 0;
+
+        outstanding_array_new = 0;
+        new_array_called = 0;
+        delete_array_called = 0;
+        aligned_new_array_called = 0;
+        aligned_delete_array_called = 0;
+        last_new_array_size = 0;
+        last_new_array_align = 0;
+    }
+
+public:
+    bool checkOutstandingNewEq(int n) const
+    {
+        return disable_checking || n == outstanding_new;
+    }
+
+    bool checkOutstandingNewNotEq(int n) const
+    {
+        return disable_checking || n != outstanding_new;
+    }
+
+    bool checkNewCalledEq(int n) const
+    {
+        return disable_checking || n == new_called;
+    }
+
+    bool checkNewCalledNotEq(int n) const
+    {
+        return disable_checking || n != new_called;
+    }
+
+    bool checkNewCalledGreaterThan(int n) const
+    {
+        return disable_checking || new_called > n;
+    }
+
+    bool checkDeleteCalledEq(int n) const
+    {
+        return disable_checking || n == delete_called;
+    }
+
+    bool checkDeleteCalledNotEq(int n) const
+    {
+        return disable_checking || n != delete_called;
+    }
+
+    bool checkDeleteCalledGreaterThan(int n) const
+    {
+        return disable_checking || delete_called > n;
+    }
+
+    bool checkAlignedNewCalledEq(int n) const
+    {
+        return disable_checking || n == aligned_new_called;
+    }
+
+    bool checkAlignedNewCalledNotEq(int n) const
+    {
+        return disable_checking || n != aligned_new_called;
+    }
+
+    bool checkAlignedNewCalledGreaterThan(int n) const
+    {
+        return disable_checking || aligned_new_called > n;
+    }
+
+    bool checkAlignedDeleteCalledEq(int n) const
+    {
+        return disable_checking || n == aligned_delete_called;
+    }
+
+    bool checkAlignedDeleteCalledNotEq(int n) const
+    {
+        return disable_checking || n != aligned_delete_called;
+    }
+
+    bool checkLastNewSizeEq(std::size_t n) const
+    {
+        return disable_checking || n == last_new_size;
+    }
+
+    bool checkLastNewSizeNotEq(std::size_t n) const
+    {
+        return disable_checking || n != last_new_size;
+    }
+
+    bool checkLastNewSizeGe(std::size_t n) const
+    {
+        return disable_checking || last_new_size >= n;
+    }
+
+    bool checkLastNewAlignEq(std::size_t n) const
+    {
+        return disable_checking || n == last_new_align;
+    }
+
+    bool checkLastNewAlignNotEq(std::size_t n) const
+    {
+        return disable_checking || n != last_new_align;
+    }
+
+    bool checkLastNewAlignGe(std::size_t n) const
+    {
+        return disable_checking || last_new_align >= n;
+    }
+
+    bool checkLastDeleteAlignEq(std::size_t n) const
+    {
+        return disable_checking || n == last_delete_align;
+    }
+
+    bool checkLastDeleteAlignNotEq(std::size_t n) const
+    {
+        return disable_checking || n != last_delete_align;
+    }
+
+    bool checkOutstandingArrayNewEq(int n) const
+    {
+        return disable_checking || n == outstanding_array_new;
+    }
+
+    bool checkOutstandingArrayNewNotEq(int n) const
+    {
+        return disable_checking || n != outstanding_array_new;
+    }
+
+    bool checkNewArrayCalledEq(int n) const
+    {
+        return disable_checking || n == new_array_called;
+    }
+
+    bool checkNewArrayCalledNotEq(int n) const
+    {
+        return disable_checking || n != new_array_called;
+    }
+
+    bool checkDeleteArrayCalledEq(int n) const
+    {
+        return disable_checking || n == delete_array_called;
+    }
+
+    bool checkDeleteArrayCalledNotEq(int n) const
+    {
+        return disable_checking || n != delete_array_called;
+    }
+
+    bool checkAlignedNewArrayCalledEq(int n) const
+    {
+        return disable_checking || n == aligned_new_array_called;
+    }
+
+    bool checkAlignedNewArrayCalledNotEq(int n) const
+    {
+        return disable_checking || n != aligned_new_array_called;
+    }
+
+    bool checkAlignedNewArrayCalledGreaterThan(int n) const
+    {
+        return disable_checking || aligned_new_array_called > n;
+    }
+
+    bool checkAlignedDeleteArrayCalledEq(int n) const
+    {
+        return disable_checking || n == aligned_delete_array_called;
+    }
+
+    bool checkAlignedDeleteArrayCalledNotEq(int n) const
+    {
+        return disable_checking || n != aligned_delete_array_called;
+    }
+
+    bool checkLastNewArraySizeEq(std::size_t n) const
+    {
+        return disable_checking || n == last_new_array_size;
+    }
+
+    bool checkLastNewArraySizeNotEq(std::size_t n) const
+    {
+        return disable_checking || n != last_new_array_size;
+    }
+
+    bool checkLastNewArrayAlignEq(std::size_t n) const
+    {
+        return disable_checking || n == last_new_array_align;
+    }
+
+    bool checkLastNewArrayAlignNotEq(std::size_t n) const
+    {
+        return disable_checking || n != last_new_array_align;
+    }
+};
+
+#ifdef DISABLE_NEW_COUNT
+  const bool MemCounter::disable_checking = true;
+#else
+  const bool MemCounter::disable_checking = false;
+#endif
+
+TEST_DIAGNOSTIC_PUSH
+TEST_MSVC_DIAGNOSTIC_IGNORED(4640) // '%s' construction of local static object is not thread safe (/Zc:threadSafeInit-)
+inline MemCounter* getGlobalMemCounter() {
+  static MemCounter counter((MemCounter::MemCounterCtorArg_()));
+  return &counter;
+}
+TEST_DIAGNOSTIC_POP
+
+MemCounter &globalMemCounter = *getGlobalMemCounter();
+
+#ifndef DISABLE_NEW_COUNT
+void* operator new(std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    getGlobalMemCounter()->newCalled(s);
+    void* ret = std::malloc(s);
+    if (ret == nullptr)
+        detail::throw_bad_alloc_helper();
+    return ret;
+}
+
+void  operator delete(void* p) TEST_NOEXCEPT
+{
+    getGlobalMemCounter()->deleteCalled(p);
+    std::free(p);
+}
+
+void* operator new[](std::size_t s) TEST_THROW_SPEC(std::bad_alloc)
+{
+    getGlobalMemCounter()->newArrayCalled(s);
+    return operator new(s);
+}
+
+void operator delete[](void* p) TEST_NOEXCEPT
+{
+    getGlobalMemCounter()->deleteArrayCalled(p);
+    operator delete(p);
+}
+
+#ifndef TEST_HAS_NO_ALIGNED_ALLOCATION
+#if defined(_LIBCPP_MSVCRT_LIKE) || \
+  (!defined(_LIBCPP_VERSION) && defined(_WIN32))
+#define USE_ALIGNED_ALLOC
+#endif
+
+void* operator new(std::size_t s, std::align_val_t av) TEST_THROW_SPEC(std::bad_alloc) {
+  const std::size_t a = static_cast<std::size_t>(av);
+  getGlobalMemCounter()->alignedNewCalled(s, a);
+  void *ret;
+#ifdef USE_ALIGNED_ALLOC
+  ret = _aligned_malloc(s, a);
+#else
+  posix_memalign(&ret, a, s);
+#endif
+  if (ret == nullptr)
+    detail::throw_bad_alloc_helper();
+  return ret;
+}
+
+void operator delete(void *p, std::align_val_t av) TEST_NOEXCEPT {
+  const std::size_t a = static_cast<std::size_t>(av);
+  getGlobalMemCounter()->alignedDeleteCalled(p, a);
+  if (p) {
+#ifdef USE_ALIGNED_ALLOC
+    ::_aligned_free(p);
+#else
+    ::free(p);
+#endif
+  }
+}
+
+void* operator new[](std::size_t s, std::align_val_t av) TEST_THROW_SPEC(std::bad_alloc) {
+  const std::size_t a = static_cast<std::size_t>(av);
+  getGlobalMemCounter()->alignedNewArrayCalled(s, a);
+  return operator new(s, av);
+}
+
+void operator delete[](void *p, std::align_val_t av) TEST_NOEXCEPT {
+  const std::size_t a = static_cast<std::size_t>(av);
+  getGlobalMemCounter()->alignedDeleteArrayCalled(p, a);
+  return operator delete(p, av);
+}
+
+#endif // TEST_HAS_NO_ALIGNED_ALLOCATION
+
+#endif // DISABLE_NEW_COUNT
+
+struct DisableAllocationGuard {
+    explicit DisableAllocationGuard(bool disable = true) : m_disabled(disable)
+    {
+        // Don't re-disable if already disabled.
+        if (globalMemCounter.disable_allocations == true) m_disabled = false;
+        if (m_disabled) globalMemCounter.disableAllocations();
+    }
+
+    void release() {
+        if (m_disabled) globalMemCounter.enableAllocations();
+        m_disabled = false;
+    }
+
+    ~DisableAllocationGuard() {
+        release();
+    }
+
+private:
+    bool m_disabled;
+
+    DisableAllocationGuard(DisableAllocationGuard const&);
+    DisableAllocationGuard& operator=(DisableAllocationGuard const&);
+};
+
+#if TEST_STD_VER >= 20
+
+struct ConstexprDisableAllocationGuard {
+    TEST_CONSTEXPR_CXX14 explicit ConstexprDisableAllocationGuard(bool disable = true) : m_disabled(disable)
+    {
+        if (!TEST_IS_CONSTANT_EVALUATED) {
+            // Don't re-disable if already disabled.
+            if (globalMemCounter.disable_allocations == true) m_disabled = false;
+            if (m_disabled) globalMemCounter.disableAllocations();
+        } else {
+            m_disabled = false;
+        }
+    }
+
+    TEST_CONSTEXPR_CXX14 void release() {
+        if (!TEST_IS_CONSTANT_EVALUATED) {
+            if (m_disabled) globalMemCounter.enableAllocations();
+            m_disabled = false;
+        }
+    }
+
+    TEST_CONSTEXPR_CXX20 ~ConstexprDisableAllocationGuard() {
+        release();
+    }
+
+private:
+    bool m_disabled;
+
+    ConstexprDisableAllocationGuard(ConstexprDisableAllocationGuard const&);
+    ConstexprDisableAllocationGuard& operator=(ConstexprDisableAllocationGuard const&);
+};
+
+#endif
+
+struct RequireAllocationGuard {
+    explicit RequireAllocationGuard(std::size_t RequireAtLeast = 1)
+            : m_req_alloc(RequireAtLeast),
+              m_new_count_on_init(globalMemCounter.new_called),
+              m_outstanding_new_on_init(globalMemCounter.outstanding_new),
+              m_exactly(false)
+    {
+    }
+
+    void requireAtLeast(std::size_t N) { m_req_alloc = N; m_exactly = false; }
+    void requireExactly(std::size_t N) { m_req_alloc = N; m_exactly = true; }
+
+    ~RequireAllocationGuard() {
+        assert(globalMemCounter.checkOutstandingNewEq(static_cast<int>(m_outstanding_new_on_init)));
+        std::size_t Expect = m_new_count_on_init + m_req_alloc;
+        assert(globalMemCounter.checkNewCalledEq(static_cast<int>(Expect)) ||
+               (!m_exactly && globalMemCounter.checkNewCalledGreaterThan(static_cast<int>(Expect))));
+    }
+
+private:
+    std::size_t m_req_alloc;
+    const std::size_t m_new_count_on_init;
+    const std::size_t m_outstanding_new_on_init;
+    bool m_exactly;
+    RequireAllocationGuard(RequireAllocationGuard const&);
+    RequireAllocationGuard& operator=(RequireAllocationGuard const&);
+};
+
+#endif /* COUNT_NEW_H */
diff --git a/app/src/main/cpp/libcxx/test/support/counting_predicates.h b/app/src/main/cpp/libcxx/test/support/counting_predicates.h
new file mode 100644
index 0000000..ef3c293
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/counting_predicates.h
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_COUNTING_PREDICATES_H
+#define TEST_SUPPORT_COUNTING_PREDICATES_H
+
+#include <cstddef>
+#include <utility>
+#include "test_macros.h"
+
+template <typename Predicate, typename Arg>
+struct unary_counting_predicate {
+public:
+    typedef Arg argument_type;
+    typedef bool result_type;
+
+    unary_counting_predicate(Predicate p) : p_(p), count_(0) {}
+    ~unary_counting_predicate() {}
+
+    bool operator () (const Arg &a) const { ++count_; return p_(a); }
+    size_t count() const { return count_; }
+    void reset() { count_ = 0; }
+
+private:
+    Predicate p_;
+    mutable size_t count_;
+};
+
+
+template <typename Predicate, typename Arg1, typename Arg2=Arg1>
+struct binary_counting_predicate {
+public:
+    typedef Arg1 first_argument_type;
+    typedef Arg2 second_argument_type;
+    typedef bool result_type;
+
+    binary_counting_predicate ( Predicate p ) : p_(p), count_(0) {}
+    ~binary_counting_predicate() {}
+
+    bool operator () (const Arg1 &a1, const Arg2 &a2) const { ++count_; return p_(a1, a2); }
+    size_t count() const { return count_; }
+    void reset() { count_ = 0; }
+
+private:
+    Predicate p_;
+    mutable size_t count_;
+};
+
+#if TEST_STD_VER > 14
+
+template <class Predicate>
+class counting_predicate {
+  Predicate pred_;
+  int* count_ = nullptr;
+
+public:
+  constexpr counting_predicate() = default;
+  constexpr counting_predicate(Predicate pred, int& count) : pred_(std::move(pred)), count_(&count) {}
+
+  template <class... Args>
+  constexpr decltype(auto) operator()(Args&& ...args) {
+    ++(*count_);
+    return pred_(std::forward<Args>(args)...);
+  }
+
+  template <class... Args>
+  constexpr decltype(auto) operator()(Args&& ...args) const {
+    ++(*count_);
+    return pred_(std::forward<Args>(args)...);
+  }
+};
+
+template <class Predicate>
+counting_predicate(Predicate pred, int& count) -> counting_predicate<Predicate>;
+
+#endif // TEST_STD_VER > 14
+
+#endif // TEST_SUPPORT_COUNTING_PREDICATES_H
diff --git a/app/src/main/cpp/libcxx/test/support/counting_projection.h b/app/src/main/cpp/libcxx/test/support/counting_projection.h
new file mode 100644
index 0000000..1af2c80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/counting_projection.h
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_COUNTING_PROJECTION_H
+#define TEST_SUPPORT_COUNTING_PROJECTION_H
+
+#include <functional>
+#include <utility>
+#include "test_macros.h"
+
+#if TEST_STD_VER > 14
+
+template <class Proj = std::identity>
+class counting_projection {
+  Proj proj_;
+  int* count_ = nullptr;
+
+public:
+  constexpr counting_projection() = default;
+  constexpr counting_projection(int& count) : count_(&count) {}
+  constexpr counting_projection(Proj proj, int& count) : proj_(std::move(proj)), count_(&count) {}
+
+  template <class T>
+  constexpr decltype(auto) operator()(T&& value) const {
+    ++(*count_);
+    return std::invoke(proj_, std::forward<T>(value));
+  }
+};
+
+counting_projection(int& count) -> counting_projection<std::identity>;
+template <class Proj>
+counting_projection(Proj proj, int& count) -> counting_projection<Proj>;
+
+#endif // TEST_STD_VER > 14
+
+#endif // TEST_SUPPORT_COUNTING_PROJECTION_H
diff --git a/app/src/main/cpp/libcxx/test/support/deduction_guides_sfinae_checks.h b/app/src/main/cpp/libcxx/test/support/deduction_guides_sfinae_checks.h
new file mode 100644
index 0000000..767ff02
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/deduction_guides_sfinae_checks.h
@@ -0,0 +1,311 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_DEDUCTION_GUIDES_SFINAE_CHECKS_H
+#define TEST_SUPPORT_DEDUCTION_GUIDES_SFINAE_CHECKS_H
+
+#include <functional>
+#include <initializer_list>
+#include <iterator>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// `SFINAEs_away` template variable checks whether the template arguments for
+// a given template class `Instantiated` can be deduced from the given
+// constructor parameter types `CtrArgs` using CTAD.
+
+template<template<typename ...> class Instantiated, class ...CtrArgs,
+    class = decltype(Instantiated(std::declval<CtrArgs>()...))>
+std::false_type SFINAEs_away_impl(int);
+
+template<template<typename ...> class Instantiated, class ...CtrArgs>
+std::true_type SFINAEs_away_impl(...);
+
+template<template<typename ...> class Instantiated, class ...CtrArgs>
+constexpr bool SFINAEs_away =
+    decltype(SFINAEs_away_impl<Instantiated, CtrArgs...>(0))::value;
+
+// For sequence containers the deduction guides should be SFINAE'd away when
+// given:
+// - "bad" input iterators (that is, a type not qualifying as an input
+//   iterator);
+// - a bad allocator.
+template<template<typename ...> class Container, typename InstantiatedContainer>
+constexpr void SequenceContainerDeductionGuidesSfinaeAway() {
+  using Alloc = std::allocator<int>;
+  using Iter = int*;
+
+  struct BadAlloc {};
+  // Note: the only requirement in the Standard is that integral types cannot be
+  // considered input iterators; however, this doesn't work for sequence
+  // containers because they have constructors of the form `(size_type count,
+  // const value_type& value)`. These constructors would be used when passing
+  // two integral types and would deduce `value_type` to be an integral type.
+#ifdef _LIBCPP_VERSION
+  using OutputIter = std::insert_iterator<InstantiatedContainer>;
+#endif // _LIBCPP_VERSION
+
+  // (iter, iter)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter)
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter>);
+
+  // (iter, iter, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, alloc)
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter, Alloc>);
+  // Cannot deduce from (iter, iter, BAD_alloc)
+  static_assert(SFINAEs_away<Container, Iter, Iter, BadAlloc>);
+
+  // (alloc)
+  //
+  // Cannot deduce from (alloc)
+  static_assert(SFINAEs_away<Container, Alloc>);
+}
+
+// For associative containers the deduction guides should be SFINAE'd away when
+// given:
+// - "bad" input iterators (that is, a type not qualifying as an input
+//   iterator);
+// - a bad allocator;
+// - an allocator in place of a comparator.
+
+template<template<typename ...> class Container, typename InstantiatedContainer>
+constexpr void AssociativeContainerDeductionGuidesSfinaeAway() {
+  using ValueType = typename InstantiatedContainer::value_type;
+  using Comp = std::less<int>;
+  using Alloc = std::allocator<ValueType>;
+  using Iter = ValueType*;
+  using InitList = std::initializer_list<ValueType>;
+
+  struct BadAlloc {};
+  // The only requirement in the Standard is that integral types cannot be
+  // considered input iterators, beyond that it is unspecified.
+  using BadIter = int;
+#ifdef _LIBCPP_VERSION
+  using OutputIter = std::insert_iterator<InstantiatedContainer>;
+#endif // _LIBCPP_VERSION
+  using AllocAsComp = Alloc;
+
+  // (iter, iter)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter>);
+
+  // (iter, iter, comp)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, comp)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, Comp>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter, Comp>);
+
+  // (iter, iter, comp, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, comp, alloc)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, Comp, Alloc>);
+  LIBCPP_STATIC_ASSERT(
+      SFINAEs_away<Container, OutputIter, OutputIter, Comp, Alloc>);
+  // Cannot deduce from (iter, iter, ALLOC_as_comp, alloc)
+  static_assert(SFINAEs_away<Container, Iter, Iter, AllocAsComp, Alloc>);
+  // Cannot deduce from (iter, iter, comp, BAD_alloc)
+  static_assert(SFINAEs_away<Container, Iter, Iter, Comp, BadAlloc>);
+
+  // (iter, iter, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, alloc)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, Alloc>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter, Alloc>);
+  // Note: (iter, iter, BAD_alloc) is interpreted as (iter, iter, comp)
+  // instead and fails upon instantiation. There is no requirement to SFINAE
+  // away bad comparators.
+
+  // (init_list, comp, alloc)
+  //
+  // Cannot deduce from (init_list, ALLOC_as_comp, alloc)
+  static_assert(SFINAEs_away<Container, InitList, AllocAsComp, Alloc>);
+  // Cannot deduce from (init_list, comp, BAD_alloc)
+  static_assert(SFINAEs_away<Container, InitList, Comp, BadAlloc>);
+
+  // (init_list, alloc)
+  //
+  // Note: (init_list, BAD_alloc) is interpreted as (init_list, comp) instead
+  // and fails upon instantiation. There is no requirement to SFINAE away bad
+  // comparators.
+}
+
+// For unordered containers the deduction guides should be SFINAE'd away when
+// given:
+// - "bad" input iterators (that is, a type not qualifying as an input
+//   iterator);
+// - a bad allocator;
+// - a bad hash functor (an integral type in place of a hash);
+// - an allocator in place of a hash functor;
+// - an allocator in place of a predicate.
+template<template<typename ...> class Container, typename InstantiatedContainer>
+constexpr void UnorderedContainerDeductionGuidesSfinaeAway() {
+  using ValueType = typename InstantiatedContainer::value_type;
+  using Pred = std::equal_to<int>;
+  using Hash = std::hash<int>;
+  using Alloc = std::allocator<ValueType>;
+  using Iter = ValueType*;
+  using InitList = std::initializer_list<ValueType>;
+
+  using BadHash = int;
+  struct BadAlloc {};
+  // The only requirement in the Standard is that integral types cannot be
+  // considered input iterators, beyond that it is unspecified.
+  using BadIter = int;
+#ifdef _LIBCPP_VERSION
+  using OutputIter = std::insert_iterator<InstantiatedContainer>;
+#endif // _LIBCPP_VERSION
+  using AllocAsHash = Alloc;
+  using AllocAsPred = Alloc;
+
+  // (iter, iter)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter>);
+
+  // (iter, iter, buckets)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, buckets)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, size_t>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter, size_t>);
+
+  // (iter, iter, buckets, hash)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, buckets, hash)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, size_t, Hash>);
+  LIBCPP_STATIC_ASSERT(
+      SFINAEs_away<Container, OutputIter, OutputIter, size_t, Hash>);
+  // Cannot deduce from (iter, iter, buckets, BAD_hash)
+  static_assert(SFINAEs_away<Container, Iter, Iter, size_t, BadHash>);
+  // Note: (iter, iter, buckets, ALLOC_as_hash) is allowed -- it just calls
+  // (iter, iter, buckets, alloc)
+
+  // (iter, iter, buckets, hash, pred)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, buckets, hash, pred)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, size_t, Hash, Pred>);
+  LIBCPP_STATIC_ASSERT(
+      SFINAEs_away<Container, OutputIter, OutputIter, size_t, Hash, Pred>);
+  // Cannot deduce from (iter, iter, buckets, BAD_hash, pred)
+  static_assert(SFINAEs_away<Container, Iter, Iter, size_t, BadHash, Pred>);
+  // Cannot deduce from (iter, iter, buckets, ALLOC_as_hash, pred)
+  static_assert(SFINAEs_away<Container, Iter, Iter, size_t, AllocAsHash, Pred>);
+  // Note: (iter, iter, buckets, hash, ALLOC_as_pred) is allowed -- it just
+  // calls (iter, iter, buckets, hash, alloc)
+
+  // (iter, iter, buckets, hash, pred, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, buckets, hash, pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, BadIter, BadIter, size_t, Hash, Pred, Alloc>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter,
+      size_t, Hash, Pred, Alloc>);
+  // Cannot deduce from (iter, iter, buckets, BAD_hash, pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, Iter, Iter, size_t, BadHash, Pred, Alloc>);
+  // Cannot deduce from (iter, iter, buckets, ALLOC_as_hash, pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, Iter, Iter, size_t, AllocAsHash, Pred, Alloc>);
+  // Cannot deduce from (iter, iter, buckets, hash, ALLOC_as_pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, Iter, Iter, size_t, Hash, AllocAsPred, Alloc>);
+  // Cannot deduce from (iter, iter, buckets, hash, pred, BAD_alloc)
+  static_assert(
+      SFINAEs_away<Container, Iter, Iter, size_t, Hash, Pred, BadAlloc>);
+
+  // (iter, iter, buckets, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, buckets, alloc)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, size_t, Alloc>);
+  LIBCPP_STATIC_ASSERT(
+      SFINAEs_away<Container, OutputIter, OutputIter, size_t, Alloc>);
+  // Note: (iter, iter, buckets, BAD_alloc) is interpreted as (iter, iter,
+  // buckets, hash), which is valid because the only requirement for the hash
+  // parameter is that it's not integral.
+
+  // (iter, iter, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, alloc)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, Alloc>);
+  LIBCPP_STATIC_ASSERT(SFINAEs_away<Container, OutputIter, OutputIter, Alloc>);
+  // Cannot deduce from (iter, iter, BAD_alloc)
+  static_assert(SFINAEs_away<Container, Iter, Iter, BadAlloc>);
+
+  // (iter, iter, buckets, hash, alloc)
+  //
+  // Cannot deduce from (BAD_iter, BAD_iter, buckets, hash, alloc)
+  static_assert(SFINAEs_away<Container, BadIter, BadIter, size_t, Hash, Alloc>);
+  LIBCPP_STATIC_ASSERT(
+      SFINAEs_away<Container, OutputIter, OutputIter, size_t, Hash, Alloc>);
+  // Cannot deduce from (iter, iter, buckets, BAD_hash, alloc)
+  static_assert(SFINAEs_away<Container, Iter, Iter, size_t, BadHash, Alloc>);
+  // Cannot deduce from (iter, iter, buckets, ALLOC_as_hash, alloc)
+  static_assert(
+      SFINAEs_away<Container, Iter, Iter, size_t, AllocAsHash, Alloc>);
+  // Note: (iter, iter, buckets, hash, BAD_alloc) is interpreted as (iter, iter,
+  // buckets, hash, pred), which is valid because there are no requirements for
+  // the predicate.
+
+  // (init_list, buckets, hash)
+  //
+  // Cannot deduce from (init_list, buckets, BAD_hash)
+  static_assert(SFINAEs_away<Container, InitList, size_t, BadHash>);
+  // Note: (init_list, buckets, ALLOC_as_hash) is interpreted as (init_list,
+  // buckets, alloc), which is valid.
+
+  // (init_list, buckets, hash, pred)
+  //
+  // Cannot deduce from (init_list, buckets, BAD_hash, pred)
+  static_assert(SFINAEs_away<Container, InitList, size_t, BadHash, Pred>);
+  // Cannot deduce from (init_list, buckets, ALLOC_as_hash, pred)
+  static_assert(SFINAEs_away<Container, InitList, size_t, AllocAsHash, Pred>);
+  // Note: (init_list, buckets, hash, ALLOC_as_pred) is interpreted as
+  // (init_list, buckets, hash, alloc), which is valid.
+
+  // (init_list, buckets, hash, pred, alloc)
+  //
+  // Cannot deduce from (init_list, buckets, BAD_hash, pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, InitList, size_t, BadHash, Pred, Alloc>);
+  // Cannot deduce from (init_list, buckets, ALLOC_as_hash, pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, InitList, size_t, AllocAsHash, Pred, Alloc>);
+  // Cannot deduce from (init_list, buckets, hash, ALLOC_as_pred, alloc)
+  static_assert(
+      SFINAEs_away<Container, InitList, size_t, Hash, AllocAsPred, Alloc>);
+  // Cannot deduce from (init_list, buckets, hash, pred, BAD_alloc)
+  static_assert(
+      SFINAEs_away<Container, InitList, size_t, Hash, Pred, BadAlloc>);
+
+  // (init_list, buckets, alloc)
+  //
+  // Note: (init_list, buckets, BAD_alloc) is interpreted as (init_list,
+  // buckets, hash), which is valid because the only requirement for the hash
+  // parameter is that it's not integral.
+
+  // (init_list, buckets, hash, alloc)
+  //
+  // Cannot deduce from (init_list, buckets, BAD_hash, alloc)
+  static_assert(SFINAEs_away<Container, InitList, size_t, BadHash, Alloc>);
+  // Cannot deduce from (init_list, buckets, ALLOC_as_hash, alloc)
+  static_assert(SFINAEs_away<Container, InitList, size_t, AllocAsHash, Alloc>);
+
+  // (init_list, alloc)
+  //
+  // Cannot deduce from (init_list, BAD_alloc)
+  static_assert(SFINAEs_away<Container, InitList, BadAlloc>);
+}
+
+#endif // TEST_SUPPORT_DEDUCTION_GUIDES_SFINAE_CHECKS_H
diff --git a/app/src/main/cpp/libcxx/test/support/deleter_types.h b/app/src/main/cpp/libcxx/test/support/deleter_types.h
new file mode 100644
index 0000000..c568002
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/deleter_types.h
@@ -0,0 +1,464 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <memory>
+
+// unique_ptr
+
+// Example move-only deleter
+
+#ifndef SUPPORT_DELETER_TYPES_H
+#define SUPPORT_DELETER_TYPES_H
+
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+#if TEST_STD_VER >= 11
+
+template <class T>
+class Deleter {
+  int state_;
+
+  Deleter(const Deleter&);
+  Deleter& operator=(const Deleter&);
+
+public:
+  TEST_CONSTEXPR_CXX23 Deleter(Deleter&& r) : state_(r.state_) { r.state_ = 0; }
+  TEST_CONSTEXPR_CXX23 Deleter& operator=(Deleter&& r) {
+    state_   = r.state_;
+    r.state_ = 0;
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 Deleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit Deleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~Deleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23 Deleter(Deleter<U>&& d, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0)
+      : state_(d.state()) {
+    d.set_state(0);
+  }
+
+private:
+  template <class U>
+  Deleter(const Deleter<U>& d, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0);
+
+public:
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete p; }
+};
+
+template <class T>
+class Deleter<T[]> {
+  int state_;
+
+  Deleter(const Deleter&);
+  Deleter& operator=(const Deleter&);
+
+public:
+  TEST_CONSTEXPR_CXX23 Deleter(Deleter&& r) : state_(r.state_) { r.state_ = 0; }
+  TEST_CONSTEXPR_CXX23 Deleter& operator=(Deleter&& r) {
+    state_   = r.state_;
+    r.state_ = 0;
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 Deleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit Deleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~Deleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete[] p; }
+};
+
+#else // TEST_STD_VER < 11
+
+template <class T>
+class Deleter {
+  mutable int state_;
+
+public:
+  Deleter() : state_(0) {}
+  explicit Deleter(int s) : state_(s) {}
+
+  Deleter(Deleter const& other) : state_(other.state_) { other.state_ = 0; }
+  Deleter& operator=(Deleter const& other) {
+    state_       = other.state_;
+    other.state_ = 0;
+    return *this;
+  }
+
+  ~Deleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  template <class U>
+  Deleter(Deleter<U> d, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0) : state_(d.state()) {}
+
+public:
+  int state() const { return state_; }
+  void set_state(int i) { state_ = i; }
+
+  void operator()(T* p) { delete p; }
+};
+
+template <class T>
+class Deleter<T[]> {
+  mutable int state_;
+
+public:
+  Deleter(Deleter const& other) : state_(other.state_) { other.state_ = 0; }
+  Deleter& operator=(Deleter const& other) {
+    state_       = other.state_;
+    other.state_ = 0;
+    return *this;
+  }
+
+  Deleter() : state_(0) {}
+  explicit Deleter(int s) : state_(s) {}
+  ~Deleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  int state() const { return state_; }
+  void set_state(int i) { state_ = i; }
+
+  void operator()(T* p) { delete[] p; }
+};
+
+#endif
+
+template <class T>
+TEST_CONSTEXPR_CXX23 void swap(Deleter<T>& x, Deleter<T>& y) {
+  Deleter<T> t(std::move(x));
+  x = std::move(y);
+  y = std::move(t);
+}
+
+template <class T>
+class CDeleter {
+  int state_;
+
+public:
+  TEST_CONSTEXPR_CXX23 CDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit CDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~CDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23 CDeleter(const CDeleter<U>& d) : state_(d.state()) {}
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete p; }
+};
+
+template <class T>
+class CDeleter<T[]> {
+  int state_;
+
+public:
+  TEST_CONSTEXPR_CXX23 CDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit CDeleter(int s) : state_(s) {}
+  template <class U>
+  TEST_CONSTEXPR_CXX23 CDeleter(const CDeleter<U>& d) : state_(d.state()) {}
+
+  TEST_CONSTEXPR_CXX23 ~CDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete[] p; }
+};
+
+template <class T>
+TEST_CONSTEXPR_CXX23 void swap(CDeleter<T>& x, CDeleter<T>& y) {
+  CDeleter<T> t(std::move(x));
+  x = std::move(y);
+  y = std::move(t);
+}
+
+// Non-copyable deleter
+template <class T>
+class NCDeleter {
+  int state_;
+  NCDeleter(NCDeleter const&);
+  NCDeleter& operator=(NCDeleter const&);
+
+public:
+  TEST_CONSTEXPR_CXX23 NCDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit NCDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~NCDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete p; }
+};
+
+template <class T>
+class NCDeleter<T[]> {
+  int state_;
+  NCDeleter(NCDeleter const&);
+  NCDeleter& operator=(NCDeleter const&);
+
+public:
+  TEST_CONSTEXPR_CXX23 NCDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit NCDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~NCDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete[] p; }
+};
+
+// Non-copyable deleter
+template <class T>
+class NCConstDeleter {
+  int state_;
+  NCConstDeleter(NCConstDeleter const&);
+  NCConstDeleter& operator=(NCConstDeleter const&);
+
+public:
+  TEST_CONSTEXPR_CXX23 NCConstDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit NCConstDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~NCConstDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) const { delete p; }
+};
+
+template <class T>
+class NCConstDeleter<T[]> {
+  int state_;
+  NCConstDeleter(NCConstDeleter const&);
+  NCConstDeleter& operator=(NCConstDeleter const&);
+
+public:
+  TEST_CONSTEXPR_CXX23 NCConstDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit NCConstDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~NCConstDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) const { delete[] p; }
+};
+
+// Non-copyable deleter
+template <class T>
+class CopyDeleter {
+  int state_;
+
+public:
+  TEST_CONSTEXPR_CXX23 CopyDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit CopyDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~CopyDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 CopyDeleter(CopyDeleter const& other) : state_(other.state_) {}
+  TEST_CONSTEXPR_CXX23 CopyDeleter& operator=(CopyDeleter const& other) {
+    state_ = other.state_;
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete p; }
+};
+
+template <class T>
+class CopyDeleter<T[]> {
+  int state_;
+
+public:
+  TEST_CONSTEXPR_CXX23 CopyDeleter() : state_(0) {}
+  TEST_CONSTEXPR_CXX23 explicit CopyDeleter(int s) : state_(s) {}
+  TEST_CONSTEXPR_CXX23 ~CopyDeleter() {
+    assert(state_ >= 0);
+    state_ = -1;
+  }
+
+  TEST_CONSTEXPR_CXX23 CopyDeleter(CopyDeleter const& other) : state_(other.state_) {}
+  TEST_CONSTEXPR_CXX23 CopyDeleter& operator=(CopyDeleter const& other) {
+    state_ = other.state_;
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void set_state(int i) { state_ = i; }
+
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete[] p; }
+};
+
+struct test_deleter_base {
+  static int count;
+  static int dealloc_count;
+};
+
+int test_deleter_base::count         = 0;
+int test_deleter_base::dealloc_count = 0;
+
+template <class T>
+class test_deleter : public test_deleter_base {
+  int state_;
+
+public:
+  test_deleter() : state_(0) { ++count; }
+  explicit test_deleter(int s) : state_(s) { ++count; }
+  test_deleter(const test_deleter& d) : state_(d.state_) { ++count; }
+  ~test_deleter() {
+    assert(state_ >= 0);
+    --count;
+    state_ = -1;
+  }
+
+  int state() const { return state_; }
+  void set_state(int i) { state_ = i; }
+
+  void operator()(T* p) {
+    assert(state_ >= 0);
+    ++dealloc_count;
+    delete p;
+  }
+#if TEST_STD_VER >= 11
+  test_deleter* operator&() const = delete;
+#else
+
+private:
+  test_deleter* operator&() const;
+#endif
+};
+
+template <class T>
+void swap(test_deleter<T>& x, test_deleter<T>& y) {
+  test_deleter<T> t(std::move(x));
+  x = std::move(y);
+  y = std::move(t);
+}
+
+#if TEST_STD_VER >= 11
+
+template <class T, size_t ID = 0>
+class PointerDeleter {
+  PointerDeleter(const PointerDeleter&);
+  PointerDeleter& operator=(const PointerDeleter&);
+
+public:
+  typedef min_pointer<T, std::integral_constant<size_t, ID>> pointer;
+
+  TEST_CONSTEXPR_CXX23 PointerDeleter()                            = default;
+  TEST_CONSTEXPR_CXX23 PointerDeleter(PointerDeleter&&)            = default;
+  TEST_CONSTEXPR_CXX23 PointerDeleter& operator=(PointerDeleter&&) = default;
+  TEST_CONSTEXPR_CXX23 explicit PointerDeleter(int) {}
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23
+  PointerDeleter(PointerDeleter<U, ID>&&, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0) {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(pointer p) {
+    if (p) {
+      delete std::addressof(*p);
+    }
+  }
+
+private:
+  template <class U>
+  PointerDeleter(const PointerDeleter<U, ID>&, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0);
+};
+
+template <class T, size_t ID>
+class PointerDeleter<T[], ID> {
+  PointerDeleter(const PointerDeleter&);
+  PointerDeleter& operator=(const PointerDeleter&);
+
+public:
+  typedef min_pointer<T, std::integral_constant<size_t, ID> > pointer;
+
+  TEST_CONSTEXPR_CXX23 PointerDeleter()                            = default;
+  TEST_CONSTEXPR_CXX23 PointerDeleter(PointerDeleter&&)            = default;
+  TEST_CONSTEXPR_CXX23 PointerDeleter& operator=(PointerDeleter&&) = default;
+  TEST_CONSTEXPR_CXX23 explicit PointerDeleter(int) {}
+
+  template <class U>
+  TEST_CONSTEXPR_CXX23
+  PointerDeleter(PointerDeleter<U, ID>&&, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0) {}
+
+  TEST_CONSTEXPR_CXX23 void operator()(pointer p) {
+    if (p) {
+      delete[] std::addressof(*p);
+    }
+  }
+
+private:
+  template <class U>
+  PointerDeleter(const PointerDeleter<U, ID>&, typename std::enable_if<!std::is_same<U, T>::value>::type* = 0);
+};
+
+#endif // TEST_STD_VER >= 11
+
+template <class T>
+class DefaultCtorDeleter {
+  int state_;
+
+public:
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete p; }
+};
+
+template <class T>
+class DefaultCtorDeleter<T[]> {
+  int state_;
+
+public:
+  TEST_CONSTEXPR_CXX23 int state() const { return state_; }
+  TEST_CONSTEXPR_CXX23 void operator()(T* p) { delete[] p; }
+};
+
+#endif // SUPPORT_DELETER_TYPES_H
diff --git a/app/src/main/cpp/libcxx/test/support/emplace_constructible.h b/app/src/main/cpp/libcxx/test/support/emplace_constructible.h
new file mode 100644
index 0000000..42a62fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/emplace_constructible.h
@@ -0,0 +1,74 @@
+#ifndef TEST_SUPPORT_EMPLACE_CONSTRUCTIBLE_H
+#define TEST_SUPPORT_EMPLACE_CONSTRUCTIBLE_H
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 11
+template <class T>
+struct EmplaceConstructible {
+  T value;
+  TEST_CONSTEXPR_CXX14 explicit EmplaceConstructible(T xvalue) : value(xvalue) {}
+  EmplaceConstructible(EmplaceConstructible const&) = delete;
+};
+
+template <class T>
+struct EmplaceConstructibleAndMoveInsertable {
+  int copied = 0;
+  T value;
+  TEST_CONSTEXPR_CXX14 explicit EmplaceConstructibleAndMoveInsertable(T xvalue) : value(xvalue) {}
+
+  TEST_CONSTEXPR_CXX14 EmplaceConstructibleAndMoveInsertable(
+      EmplaceConstructibleAndMoveInsertable&& Other)
+      : copied(Other.copied + 1), value(std::move(Other.value)) {}
+};
+
+template <class T>
+struct EmplaceConstructibleAndMoveable {
+  int copied = 0;
+  int assigned = 0;
+  T value;
+  TEST_CONSTEXPR_CXX14 explicit EmplaceConstructibleAndMoveable(T xvalue) noexcept : value(xvalue) {}
+
+  TEST_CONSTEXPR_CXX14 EmplaceConstructibleAndMoveable(EmplaceConstructibleAndMoveable&& Other)
+      noexcept : copied(Other.copied + 1),
+                 value(std::move(Other.value)) {}
+
+  TEST_CONSTEXPR_CXX14 EmplaceConstructibleAndMoveable&
+  operator=(EmplaceConstructibleAndMoveable&& Other) noexcept {
+    copied = Other.copied;
+    assigned = Other.assigned + 1;
+    value = std::move(Other.value);
+    return *this;
+  }
+};
+
+template <class T>
+struct EmplaceConstructibleMoveableAndAssignable {
+  int copied = 0;
+  int assigned = 0;
+  T value;
+  TEST_CONSTEXPR_CXX14 explicit EmplaceConstructibleMoveableAndAssignable(T xvalue) noexcept
+      : value(xvalue) {}
+
+  TEST_CONSTEXPR_CXX14 EmplaceConstructibleMoveableAndAssignable(
+      EmplaceConstructibleMoveableAndAssignable&& Other) noexcept
+      : copied(Other.copied + 1),
+        value(std::move(Other.value)) {}
+
+  TEST_CONSTEXPR_CXX14 EmplaceConstructibleMoveableAndAssignable&
+  operator=(EmplaceConstructibleMoveableAndAssignable&& Other) noexcept {
+    copied = Other.copied;
+    assigned = Other.assigned + 1;
+    value = std::move(Other.value);
+    return *this;
+  }
+
+  TEST_CONSTEXPR_CXX14 EmplaceConstructibleMoveableAndAssignable& operator=(T xvalue) {
+    value = std::move(xvalue);
+    ++assigned;
+    return *this;
+  }
+};
+#endif
+
+#endif // TEST_SUPPORT_EMPLACE_CONSTRUCTIBLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/experimental_any_helpers.h b/app/src/main/cpp/libcxx/test/support/experimental_any_helpers.h
new file mode 100644
index 0000000..c7fb9cf
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/experimental_any_helpers.h
@@ -0,0 +1,322 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef EXPERIMENTAL_ANY_HELPERS_H
+#define EXPERIMENTAL_ANY_HELPERS_H
+
+#include <experimental/any>
+#include <typeinfo>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class T>
+  struct IsSmallObject
+    : public std::integral_constant<bool
+        , sizeof(T) <= (sizeof(void*)*3)
+          && std::alignment_of<void*>::value
+             % std::alignment_of<T>::value == 0
+          && std::is_nothrow_move_constructible<T>::value
+        >
+  {};
+
+
+// Return 'true' if 'Type' will be considered a small type by 'any'
+template <class Type>
+bool isSmallType() {
+#if defined(_LIBCPP_VERSION)
+    return std::experimental::__any_imp::_IsSmallObject<Type>::value;
+#else
+    return IsSmallObject<Type>::value;
+#endif
+
+}
+
+// Assert that an object is empty. If the object used to contain an object
+// of type 'LastType' check that it can no longer be accessed.
+template <class LastType = int>
+void assertEmpty(std::experimental::any const& a) {
+    assert(a.empty());
+    RTTI_ASSERT(a.type() == typeid(void));
+    assert(std::experimental::any_cast<LastType const>(&a) == nullptr);
+}
+
+// Assert that an 'any' object stores the specified 'Type' and 'value'.
+template <class Type>
+_LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
+void assertContains(std::experimental::any const& a, int value = 1) {
+    assert(!a.empty());
+    RTTI_ASSERT(a.type() == typeid(Type));
+    assert(std::experimental::any_cast<Type const &>(a).value == value);
+}
+
+// Modify the value of a "test type" stored within an any to the specified
+// 'value'.
+template <class Type>
+_LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
+void modifyValue(std::experimental::any& a, int value) {
+    assert(!a.empty());
+    RTTI_ASSERT(a.type() == typeid(Type));
+    std::experimental::any_cast<Type&>(a).value = value;
+}
+
+// A test type that will trigger the small object optimization within 'any'.
+template <int Dummy = 0>
+struct small_type
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static int const_copied;
+    static int non_const_copied;
+
+    static void reset() {
+        small_type::copied = 0;
+        small_type::moved = 0;
+        small_type::const_copied = 0;
+        small_type::non_const_copied = 0;
+    }
+
+    int value;
+
+    explicit small_type(int val) : value(val) {
+        ++count;
+    }
+
+    small_type(small_type const & other) throw() {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++const_copied;
+    }
+
+    small_type(small_type& other) throw() {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++non_const_copied;
+    }
+
+    small_type(small_type && other) throw() {
+        value = other.value;
+        other.value = 0;
+        ++count;
+        ++moved;
+    }
+
+    ~small_type() {
+        value = -1;
+        --count;
+    }
+
+private:
+    small_type& operator=(small_type const&) = delete;
+    small_type& operator=(small_type&&) = delete;
+};
+
+template <int Dummy>
+int small_type<Dummy>::count = 0;
+
+template <int Dummy>
+int small_type<Dummy>::copied = 0;
+
+template <int Dummy>
+int small_type<Dummy>::moved = 0;
+
+template <int Dummy>
+int small_type<Dummy>::const_copied = 0;
+
+template <int Dummy>
+int small_type<Dummy>::non_const_copied = 0;
+
+typedef small_type<> small;
+typedef small_type<1> small1;
+typedef small_type<2> small2;
+
+
+// A test type that will NOT trigger the small object optimization in any.
+template <int Dummy = 0>
+struct large_type
+{
+    static int count;
+    static int copied;
+    static int moved;
+    static int const_copied;
+    static int non_const_copied;
+
+    static void reset() {
+        large_type::copied = 0;
+        large_type::moved  = 0;
+        large_type::const_copied = 0;
+        large_type::non_const_copied = 0;
+    }
+
+    int value;
+
+    large_type(int val) : value(val) {
+        ++count;
+        data[0] = 0;
+    }
+
+    large_type(large_type const & other) {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++const_copied;
+    }
+
+    large_type(large_type & other) {
+        value = other.value;
+        ++count;
+        ++copied;
+        ++non_const_copied;
+    }
+
+    large_type(large_type && other) {
+        value = other.value;
+        other.value = 0;
+        ++count;
+        ++moved;
+    }
+
+    ~large_type()  {
+        value = 0;
+        --count;
+    }
+
+private:
+    large_type& operator=(large_type const&) = delete;
+    large_type& operator=(large_type &&) = delete;
+    int data[10];
+};
+
+template <int Dummy>
+int large_type<Dummy>::count = 0;
+
+template <int Dummy>
+int large_type<Dummy>::copied = 0;
+
+template <int Dummy>
+int large_type<Dummy>::moved = 0;
+
+template <int Dummy>
+int large_type<Dummy>::const_copied = 0;
+
+template <int Dummy>
+int large_type<Dummy>::non_const_copied = 0;
+
+typedef large_type<> large;
+typedef large_type<1> large1;
+typedef large_type<2> large2;
+
+// The exception type thrown by 'small_throws_on_copy', 'large_throws_on_copy'
+// and 'throws_on_move'.
+struct my_any_exception {};
+
+void throwMyAnyExpression() {
+#if !defined(TEST_HAS_NO_EXCEPTIONS)
+        throw my_any_exception();
+#else
+        assert(false && "Exceptions are disabled");
+#endif
+}
+
+// A test type that will trigger the small object optimization within 'any'.
+// this type throws if it is copied.
+struct small_throws_on_copy
+{
+    static int count;
+    int value;
+
+    explicit small_throws_on_copy(int val = 0) : value(val) {
+        ++count;
+    }
+
+    small_throws_on_copy(small_throws_on_copy const &) {
+        throwMyAnyExpression();
+    }
+
+    small_throws_on_copy(small_throws_on_copy && other) throw() {
+        value = other.value;
+        ++count;
+    }
+
+    ~small_throws_on_copy() {
+        --count;
+    }
+private:
+    small_throws_on_copy& operator=(small_throws_on_copy const&) = delete;
+    small_throws_on_copy& operator=(small_throws_on_copy &&) = delete;
+};
+
+int small_throws_on_copy::count = 0;
+
+// A test type that will NOT trigger the small object optimization within 'any'.
+// this type throws if it is copied.
+struct large_throws_on_copy
+{
+    static int count;
+    int value = 0;
+
+    explicit large_throws_on_copy(int val = 0) : value(val) {
+        data[0] = 0;
+        ++count;
+    }
+
+    large_throws_on_copy(large_throws_on_copy const &) {
+         throwMyAnyExpression();
+    }
+
+    large_throws_on_copy(large_throws_on_copy && other) throw() {
+        value = other.value;
+        ++count;
+    }
+
+    ~large_throws_on_copy() {
+        --count;
+    }
+
+private:
+    large_throws_on_copy& operator=(large_throws_on_copy const&) = delete;
+    large_throws_on_copy& operator=(large_throws_on_copy &&) = delete;
+    int data[10];
+};
+
+int large_throws_on_copy::count = 0;
+
+// A test type that throws when it is moved. This object will NOT trigger
+// the small object optimization in 'any'.
+struct throws_on_move
+{
+    static int count;
+    int value;
+
+    explicit throws_on_move(int val = 0) : value(val) { ++count; }
+
+    throws_on_move(throws_on_move const & other) {
+        value = other.value;
+        ++count;
+    }
+
+    throws_on_move(throws_on_move &&) {
+        throwMyAnyExpression();
+    }
+
+    ~throws_on_move() {
+        --count;
+    }
+private:
+    throws_on_move& operator=(throws_on_move const&) = delete;
+    throws_on_move& operator=(throws_on_move &&) = delete;
+};
+
+int throws_on_move::count = 0;
+
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/external_threads.cpp b/app/src/main/cpp/libcxx/test/support/external_threads.cpp
new file mode 100644
index 0000000..3ffce1a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/external_threads.cpp
@@ -0,0 +1,9 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+#define _LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL
+#include <__threading_support>
diff --git a/app/src/main/cpp/libcxx/test/support/filesystem_include.h b/app/src/main/cpp/libcxx/test/support/filesystem_include.h
new file mode 100644
index 0000000..f5c1d97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/filesystem_include.h
@@ -0,0 +1,13 @@
+#ifndef TEST_SUPPORT_FILESYSTEM_INCLUDE_H
+#define TEST_SUPPORT_FILESYSTEM_INCLUDE_H
+
+#include <filesystem>
+#include "test_macros.h"
+
+#if defined(_LIBCPP_VERSION) && TEST_STD_VER < 17
+namespace fs = std::__fs::filesystem;
+#else
+namespace fs = std::filesystem;
+#endif
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/filesystem_test_helper.h b/app/src/main/cpp/libcxx/test/support/filesystem_test_helper.h
new file mode 100644
index 0000000..d09b37e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/filesystem_test_helper.h
@@ -0,0 +1,755 @@
+#ifndef FILESYSTEM_TEST_HELPER_H
+#define FILESYSTEM_TEST_HELPER_H
+
+#include "filesystem_include.h"
+
+#include <sys/stat.h> // for stat, mkdir, mkfifo
+#ifndef _WIN32
+#include <unistd.h> // for ftruncate, link, symlink, getcwd, chdir
+#include <sys/statvfs.h>
+#else
+#include <io.h>
+#include <direct.h>
+#include <windows.h> // for CreateSymbolicLink, CreateHardLink
+#endif
+
+#include <cassert>
+#include <chrono>
+#include <cstdint>
+#include <cstdio> // for printf
+#include <string>
+#include <system_error>
+#include <vector>
+
+#include "make_string.h"
+#include "test_macros.h"
+#include "rapid-cxx-test.h"
+#include "format_string.h"
+
+// For creating socket files
+#if !defined(__FreeBSD__) && !defined(__APPLE__) && !defined(_WIN32)
+# include <sys/socket.h>
+# include <sys/un.h>
+#endif
+
+namespace utils {
+#ifdef _WIN32
+    inline int mkdir(const char* path, int mode) { (void)mode; return ::_mkdir(path); }
+    inline int symlink(const char* oldname, const char* newname, bool is_dir) {
+        DWORD flags = is_dir ? SYMBOLIC_LINK_FLAG_DIRECTORY : 0;
+        if (CreateSymbolicLinkA(newname, oldname,
+                                flags | SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE))
+          return 0;
+        if (GetLastError() != ERROR_INVALID_PARAMETER)
+          return 1;
+        return !CreateSymbolicLinkA(newname, oldname, flags);
+    }
+    inline int link(const char *oldname, const char* newname) {
+        return !CreateHardLinkA(newname, oldname, NULL);
+    }
+    inline int setenv(const char *var, const char *val, int overwrite) {
+        (void)overwrite;
+        return ::_putenv((std::string(var) + "=" + std::string(val)).c_str());
+    }
+    inline int unsetenv(const char *var) {
+        return ::_putenv((std::string(var) + "=").c_str());
+    }
+    inline bool space(std::string path, std::uintmax_t &capacity,
+                      std::uintmax_t &free, std::uintmax_t &avail) {
+        ULARGE_INTEGER FreeBytesAvailableToCaller, TotalNumberOfBytes,
+                       TotalNumberOfFreeBytes;
+        if (!GetDiskFreeSpaceExA(path.c_str(), &FreeBytesAvailableToCaller,
+                                 &TotalNumberOfBytes, &TotalNumberOfFreeBytes))
+          return false;
+        capacity = TotalNumberOfBytes.QuadPart;
+        free = TotalNumberOfFreeBytes.QuadPart;
+        avail = FreeBytesAvailableToCaller.QuadPart;
+        assert(capacity > 0);
+        assert(free > 0);
+        assert(avail > 0);
+        return true;
+    }
+#else
+    using ::mkdir;
+    inline int symlink(const char* oldname, const char* newname, bool is_dir) { (void)is_dir; return ::symlink(oldname, newname); }
+    using ::link;
+    using ::setenv;
+    using ::unsetenv;
+    inline bool space(std::string path, std::uintmax_t &capacity,
+                      std::uintmax_t &free, std::uintmax_t &avail) {
+        struct statvfs expect;
+        if (::statvfs(path.c_str(), &expect) == -1)
+          return false;
+        assert(expect.f_bavail > 0);
+        assert(expect.f_bfree > 0);
+        assert(expect.f_bsize > 0);
+        assert(expect.f_blocks > 0);
+        assert(expect.f_frsize > 0);
+        auto do_mult = [&](std::uintmax_t val) {
+            std::uintmax_t fsize = expect.f_frsize;
+            std::uintmax_t new_val = val * fsize;
+            assert(new_val / fsize == val); // Test for overflow
+            return new_val;
+        };
+        capacity = do_mult(expect.f_blocks);
+        free = do_mult(expect.f_bfree);
+        avail = do_mult(expect.f_bavail);
+        return true;
+    }
+#endif
+
+    // N.B. libc might define some of the foo[64] identifiers using macros from
+    // foo64 -> foo or vice versa.
+#if defined(_WIN32)
+    using off64_t = int64_t;
+#elif defined(__MVS__) || defined(__LP64__)
+    using off64_t = ::off_t;
+#else
+    using ::off64_t;
+#endif
+
+    inline FILE* fopen64(const char* pathname, const char* mode) {
+        // Bionic does not distinguish between fopen and fopen64, but fopen64
+        // wasn't added until API 24.
+#if defined(_WIN32) || defined(__MVS__) || defined(__LP64__) || defined(__BIONIC__)
+        return ::fopen(pathname, mode);
+#else
+        return ::fopen64(pathname, mode);
+#endif
+    }
+
+    inline int ftruncate64(int fd, off64_t length) {
+#if defined(_WIN32)
+        // _chsize_s sets errno on failure and also returns the error number.
+        return ::_chsize_s(fd, length) ? -1 : 0;
+#elif defined(__MVS__) || defined(__LP64__)
+        return ::ftruncate(fd, length);
+#else
+        return ::ftruncate64(fd, length);
+#endif
+    }
+
+    inline std::string getcwd() {
+        // Assume that path lengths are not greater than this.
+        // This should be fine for testing purposes.
+        char buf[4096];
+        char* ret = ::getcwd(buf, sizeof(buf));
+        assert(ret && "getcwd failed");
+        return std::string(ret);
+    }
+
+    inline bool exists(std::string const& path) {
+        struct ::stat tmp;
+        return ::stat(path.c_str(), &tmp) == 0;
+    }
+} // end namespace utils
+
+struct scoped_test_env
+{
+    scoped_test_env() : test_root(available_cwd_path()) {
+#ifdef _WIN32
+        // Windows mkdir can create multiple recursive directories
+        // if needed.
+        std::string cmd = "mkdir " + test_root.string();
+#else
+        std::string cmd = "mkdir -p " + test_root.string();
+#endif
+        int ret = std::system(cmd.c_str());
+        assert(ret == 0);
+
+        // Ensure that the root_path is fully resolved, i.e. it contains no
+        // symlinks. The filesystem tests depend on that. We do this after
+        // creating the root_path, because `fs::canonical` requires the
+        // path to exist.
+        test_root = fs::canonical(test_root);
+    }
+
+    ~scoped_test_env() {
+#ifdef _WIN32
+        std::string cmd = "rmdir /s /q " + test_root.string();
+        int ret = std::system(cmd.c_str());
+        assert(ret == 0);
+#else
+#if defined(__MVS__)
+        // The behaviour of chmod -R on z/OS prevents recursive
+        // permission change for directories that do not have read permission.
+        std::string cmd = "find  " + test_root.string() + " -exec chmod 777 {} \\;";
+#else
+        std::string cmd = "chmod -R 777 " + test_root.string();
+#endif // defined(__MVS__)
+        int ret = std::system(cmd.c_str());
+#if !defined(_AIX)
+        // On AIX the chmod command will return non-zero when trying to set
+        // the permissions on a directory that contains a bad symlink. This triggers
+        // the assert, despite being able to delete everything with the following
+        // `rm -r` command.
+        assert(ret == 0);
+#endif
+
+        cmd = "rm -rf " + test_root.string();
+        ret = std::system(cmd.c_str());
+        assert(ret == 0);
+#endif
+    }
+
+    scoped_test_env(scoped_test_env const &) = delete;
+    scoped_test_env & operator=(scoped_test_env const &) = delete;
+
+    fs::path make_env_path(std::string p) { return sanitize_path(p); }
+
+    std::string sanitize_path(std::string raw) {
+        assert(raw.find("..") == std::string::npos);
+        std::string root = test_root.string();
+        if (root.compare(0, root.size(), raw, 0, root.size()) != 0) {
+            assert(raw.front() != '\\');
+            fs::path tmp(test_root);
+            tmp /= raw;
+            return tmp.string();
+        }
+        return raw;
+    }
+
+    // Purposefully using a size potentially larger than off_t here so we can
+    // test the behavior of libc++fs when it is built with _FILE_OFFSET_BITS=64
+    // but the caller is not (std::filesystem also uses uintmax_t rather than
+    // off_t). On a 32-bit system this allows us to create a file larger than
+    // 2GB.
+    std::string create_file(fs::path filename_path, uintmax_t size = 0) {
+        std::string filename = sanitize_path(filename_path.string());
+
+        if (size >
+            static_cast<typename std::make_unsigned<utils::off64_t>::type>(
+                std::numeric_limits<utils::off64_t>::max())) {
+            fprintf(stderr, "create_file(%s, %ju) too large\n",
+                    filename.c_str(), size);
+            abort();
+        }
+
+#if defined(_WIN32) || defined(__MVS__)
+#  define FOPEN_CLOEXEC_FLAG ""
+#else
+#  define FOPEN_CLOEXEC_FLAG "e"
+#endif
+        FILE* file = utils::fopen64(filename.c_str(), "w" FOPEN_CLOEXEC_FLAG);
+        if (file == nullptr) {
+            fprintf(stderr, "fopen %s failed: %s\n", filename.c_str(),
+                    strerror(errno));
+            abort();
+        }
+
+        if (utils::ftruncate64(
+                fileno(file), static_cast<utils::off64_t>(size)) == -1) {
+            fprintf(stderr, "ftruncate %s %ju failed: %s\n", filename.c_str(),
+                    size, strerror(errno));
+            fclose(file);
+            abort();
+        }
+
+        fclose(file);
+        return filename;
+    }
+
+    std::string create_dir(fs::path filename_path) {
+        std::string filename = filename_path.string();
+        filename = sanitize_path(std::move(filename));
+        int ret = utils::mkdir(filename.c_str(), 0777); // rwxrwxrwx mode
+        assert(ret == 0);
+        return filename;
+    }
+
+    std::string create_file_dir_symlink(fs::path source_path,
+                                        fs::path to_path,
+                                        bool sanitize_source = true,
+                                        bool is_dir = false) {
+        std::string source = source_path.string();
+        std::string to = to_path.string();
+        if (sanitize_source)
+            source = sanitize_path(std::move(source));
+        to = sanitize_path(std::move(to));
+        int ret = utils::symlink(source.c_str(), to.c_str(), is_dir);
+        assert(ret == 0);
+        return to;
+    }
+
+    std::string create_symlink(fs::path source_path,
+                               fs::path to_path,
+                               bool sanitize_source = true) {
+        return create_file_dir_symlink(source_path, to_path, sanitize_source,
+                                       false);
+    }
+
+    std::string create_directory_symlink(fs::path source_path,
+                                         fs::path to_path,
+                                         bool sanitize_source = true) {
+        return create_file_dir_symlink(source_path, to_path, sanitize_source,
+                                       true);
+    }
+
+    std::string create_hardlink(fs::path source_path, fs::path to_path) {
+        std::string source = source_path.string();
+        std::string to = to_path.string();
+        source = sanitize_path(std::move(source));
+        to = sanitize_path(std::move(to));
+        int ret = utils::link(source.c_str(), to.c_str());
+        assert(ret == 0);
+        return to;
+    }
+
+#ifndef _WIN32
+    std::string create_fifo(std::string file) {
+        file = sanitize_path(std::move(file));
+        int ret = ::mkfifo(file.c_str(), 0666); // rw-rw-rw- mode
+        assert(ret == 0);
+        return file;
+    }
+#endif
+
+  // Some platforms doesn't support socket files so we shouldn't even
+  // allow tests to call this unguarded.
+#if !defined(__FreeBSD__) && !defined(__APPLE__) && !defined(_WIN32)
+    std::string create_socket(std::string file) {
+        file = sanitize_path(std::move(file));
+
+        ::sockaddr_un address;
+        address.sun_family = AF_UNIX;
+        assert(file.size() <= sizeof(address.sun_path));
+        ::strncpy(address.sun_path, file.c_str(), sizeof(address.sun_path));
+        int fd = ::socket(AF_UNIX, SOCK_STREAM, 0);
+        ::bind(fd, reinterpret_cast<::sockaddr*>(&address), sizeof(address));
+        return file;
+    }
+#endif
+
+    fs::path test_root;
+
+private:
+    // This could potentially introduce a filesystem race if multiple
+    // scoped_test_envs were created concurrently in the same test (hence
+    // sharing the same cwd). However, it is fairly unlikely to happen as
+    // we generally don't use scoped_test_env from multiple threads, so
+    // this is deemed acceptable.
+    // The cwd.filename() itself isn't unique across all tests in the suite,
+    // so start the numbering from a hash of the full cwd, to avoid
+    // different tests interfering with each other.
+    static inline fs::path available_cwd_path() {
+        fs::path const cwd = utils::getcwd();
+        fs::path const tmp = fs::temp_directory_path();
+        std::string base = cwd.filename().string();
+        size_t i = std::hash<std::string>()(cwd.string());
+        fs::path p = tmp / (base + "-static_env." + std::to_string(i));
+        while (utils::exists(p.string())) {
+            p = tmp / (base + "-static_env." + std::to_string(++i));
+        }
+        return p;
+    }
+};
+
+/// This class generates the following tree:
+///
+///     static_test_env
+///     |-- bad_symlink -> dne
+///     |-- dir1
+///     |   |-- dir2
+///     |   |   |-- afile3
+///     |   |   |-- dir3
+///     |   |   |   `-- file5
+///     |   |   |-- file4
+///     |   |   `-- symlink_to_dir3 -> dir3
+///     |   `-- file1
+///     |   `-- file2
+///     |-- empty_file
+///     |-- non_empty_file
+///     |-- symlink_to_dir -> dir1
+///     `-- symlink_to_empty_file -> empty_file
+///
+class static_test_env {
+    scoped_test_env env_;
+public:
+    static_test_env() {
+        env_.create_symlink("dne", "bad_symlink", false);
+        env_.create_dir("dir1");
+        env_.create_dir("dir1/dir2");
+        env_.create_file("dir1/dir2/afile3");
+        env_.create_dir("dir1/dir2/dir3");
+        env_.create_file("dir1/dir2/dir3/file5");
+        env_.create_file("dir1/dir2/file4");
+        env_.create_directory_symlink("dir3", "dir1/dir2/symlink_to_dir3", false);
+        env_.create_file("dir1/file1");
+        env_.create_file("dir1/file2", 42);
+        env_.create_file("empty_file");
+        env_.create_file("non_empty_file", 42);
+        env_.create_directory_symlink("dir1", "symlink_to_dir", false);
+        env_.create_symlink("empty_file", "symlink_to_empty_file", false);
+    }
+
+    const fs::path Root = env_.test_root;
+
+    fs::path makePath(fs::path const& p) const {
+        // env_path is expected not to contain symlinks.
+        fs::path const& env_path = Root;
+        return env_path / p;
+    }
+
+    const std::vector<fs::path> TestFileList = {
+        makePath("empty_file"),
+        makePath("non_empty_file"),
+        makePath("dir1/file1"),
+        makePath("dir1/file2")
+    };
+
+    const std::vector<fs::path> TestDirList = {
+        makePath("dir1"),
+        makePath("dir1/dir2"),
+        makePath("dir1/dir2/dir3")
+    };
+
+    const fs::path File          = TestFileList[0];
+    const fs::path Dir           = TestDirList[0];
+    const fs::path Dir2          = TestDirList[1];
+    const fs::path Dir3          = TestDirList[2];
+    const fs::path SymlinkToFile = makePath("symlink_to_empty_file");
+    const fs::path SymlinkToDir  = makePath("symlink_to_dir");
+    const fs::path BadSymlink    = makePath("bad_symlink");
+    const fs::path DNE           = makePath("DNE");
+    const fs::path EmptyFile     = TestFileList[0];
+    const fs::path NonEmptyFile  = TestFileList[1];
+    const fs::path CharFile      = "/dev/null"; // Hopefully this exists
+
+    const std::vector<fs::path> DirIterationList = {
+        makePath("dir1/dir2"),
+        makePath("dir1/file1"),
+        makePath("dir1/file2")
+    };
+
+    const std::vector<fs::path> DirIterationListDepth1 = {
+        makePath("dir1/dir2/afile3"),
+        makePath("dir1/dir2/dir3"),
+        makePath("dir1/dir2/symlink_to_dir3"),
+        makePath("dir1/dir2/file4"),
+    };
+
+    const std::vector<fs::path> RecDirIterationList = {
+        makePath("dir1/dir2"),
+        makePath("dir1/file1"),
+        makePath("dir1/file2"),
+        makePath("dir1/dir2/afile3"),
+        makePath("dir1/dir2/dir3"),
+        makePath("dir1/dir2/symlink_to_dir3"),
+        makePath("dir1/dir2/file4"),
+        makePath("dir1/dir2/dir3/file5")
+    };
+
+    const std::vector<fs::path> RecDirFollowSymlinksIterationList = {
+        makePath("dir1/dir2"),
+        makePath("dir1/file1"),
+        makePath("dir1/file2"),
+        makePath("dir1/dir2/afile3"),
+        makePath("dir1/dir2/dir3"),
+        makePath("dir1/dir2/file4"),
+        makePath("dir1/dir2/dir3/file5"),
+        makePath("dir1/dir2/symlink_to_dir3"),
+        makePath("dir1/dir2/symlink_to_dir3/file5"),
+    };
+};
+
+struct CWDGuard {
+  std::string oldCwd_;
+  CWDGuard() : oldCwd_(utils::getcwd()) { }
+  ~CWDGuard() {
+    int ret = ::chdir(oldCwd_.c_str());
+    assert(ret == 0 && "chdir failed");
+  }
+
+  CWDGuard(CWDGuard const&) = delete;
+  CWDGuard& operator=(CWDGuard const&) = delete;
+};
+
+// Misc test types
+
+const MultiStringType PathList[] = {
+        MKSTR(""),
+        MKSTR(" "),
+        MKSTR("//"),
+        MKSTR("."),
+        MKSTR(".."),
+        MKSTR("foo"),
+        MKSTR("/"),
+        MKSTR("/foo"),
+        MKSTR("foo/"),
+        MKSTR("/foo/"),
+        MKSTR("foo/bar"),
+        MKSTR("/foo/bar"),
+        MKSTR("//net"),
+        MKSTR("//net/foo"),
+        MKSTR("///foo///"),
+        MKSTR("///foo///bar"),
+        MKSTR("/."),
+        MKSTR("./"),
+        MKSTR("/.."),
+        MKSTR("../"),
+        MKSTR("foo/."),
+        MKSTR("foo/.."),
+        MKSTR("foo/./"),
+        MKSTR("foo/./bar"),
+        MKSTR("foo/../"),
+        MKSTR("foo/../bar"),
+        MKSTR("c:"),
+        MKSTR("c:/"),
+        MKSTR("c:foo"),
+        MKSTR("c:/foo"),
+        MKSTR("c:foo/"),
+        MKSTR("c:/foo/"),
+        MKSTR("c:/foo/bar"),
+        MKSTR("prn:"),
+        MKSTR("c:\\"),
+        MKSTR("c:\\foo"),
+        MKSTR("c:foo\\"),
+        MKSTR("c:\\foo\\"),
+        MKSTR("c:\\foo/"),
+        MKSTR("c:/foo\\bar"),
+        MKSTR("//"),
+        MKSTR("/finally/we/need/one/really/really/really/really/really/really/really/long/string")
+};
+const unsigned PathListSize = sizeof(PathList) / sizeof(MultiStringType);
+
+template <class Iter>
+Iter IterEnd(Iter B) {
+  using VT = typename std::iterator_traits<Iter>::value_type;
+  for (; *B != VT{}; ++B)
+    ;
+  return B;
+}
+
+template <class CharT>
+const CharT* StrEnd(CharT const* P) {
+    return IterEnd(P);
+}
+
+template <class CharT>
+std::size_t StrLen(CharT const* P) {
+    return StrEnd(P) - P;
+}
+
+// Testing the allocation behavior of the code_cvt functions requires
+// *knowing* that the allocation was not done by "path::__str_".
+// This hack forces path to allocate enough memory.
+inline void PathReserve(fs::path& p, std::size_t N) {
+  auto const& native_ref = p.native();
+  const_cast<fs::path::string_type&>(native_ref).reserve(N);
+}
+
+template <class Iter1, class Iter2>
+bool checkCollectionsEqual(
+    Iter1 start1, Iter1 const end1
+  , Iter2 start2, Iter2 const end2
+  )
+{
+    while (start1 != end1 && start2 != end2) {
+        if (*start1 != *start2) {
+            return false;
+        }
+        ++start1; ++start2;
+    }
+    return (start1 == end1 && start2 == end2);
+}
+
+
+template <class Iter1, class Iter2>
+bool checkCollectionsEqualBackwards(
+    Iter1 const start1, Iter1 end1
+  , Iter2 const start2, Iter2 end2
+  )
+{
+    while (start1 != end1 && start2 != end2) {
+        --end1; --end2;
+        if (*end1 != *end2) {
+            return false;
+        }
+    }
+    return (start1 == end1 && start2 == end2);
+}
+
+// We often need to test that the error_code was cleared if no error occurs
+// this function returns an error_code which is set to an error that will
+// never be returned by the filesystem functions.
+inline std::error_code GetTestEC(unsigned Idx = 0) {
+  using std::errc;
+  auto GetErrc = [&]() {
+    switch (Idx) {
+    case 0:
+      return errc::address_family_not_supported;
+    case 1:
+      return errc::address_not_available;
+    case 2:
+      return errc::address_in_use;
+    case 3:
+      return errc::argument_list_too_long;
+    default:
+      assert(false && "Idx out of range");
+      std::abort();
+    }
+  };
+  return std::make_error_code(GetErrc());
+}
+
+inline bool ErrorIsImp(const std::error_code& ec,
+                       std::vector<std::errc> const& errors) {
+  std::error_condition cond = ec.default_error_condition();
+  for (auto errc : errors) {
+    if (cond.value() == static_cast<int>(errc))
+      return true;
+  }
+  return false;
+}
+
+template <class... ErrcT>
+inline bool ErrorIs(const std::error_code& ec, std::errc First, ErrcT... Rest) {
+  std::vector<std::errc> errors = {First, Rest...};
+  return ErrorIsImp(ec, errors);
+}
+
+// Provide our own Sleep routine since std::this_thread::sleep_for is not
+// available in single-threaded mode.
+template <class Dur> void SleepFor(Dur dur) {
+    using namespace std::chrono;
+#if defined(_LIBCPP_HAS_NO_MONOTONIC_CLOCK)
+    using Clock = system_clock;
+#else
+    using Clock = steady_clock;
+#endif
+    const auto wake_time = Clock::now() + dur;
+    while (Clock::now() < wake_time)
+        ;
+}
+
+inline bool PathEq(fs::path const& LHS, fs::path const& RHS) {
+  return LHS.native() == RHS.native();
+}
+
+inline bool PathEqIgnoreSep(fs::path LHS, fs::path RHS) {
+  LHS.make_preferred();
+  RHS.make_preferred();
+  return LHS.native() == RHS.native();
+}
+
+inline fs::perms NormalizeExpectedPerms(fs::perms P) {
+#ifdef _WIN32
+  // On Windows, fs::perms only maps down to one bit stored in the filesystem,
+  // a boolean readonly flag.
+  // Normalize permissions to the format it gets returned; all fs entries are
+  // read+exec for all users; writable ones also have the write bit set for
+  // all users.
+  P |= fs::perms::owner_read | fs::perms::group_read | fs::perms::others_read;
+  P |= fs::perms::owner_exec | fs::perms::group_exec | fs::perms::others_exec;
+  fs::perms Write =
+      fs::perms::owner_write | fs::perms::group_write | fs::perms::others_write;
+  if ((P & Write) != fs::perms::none)
+    P |= Write;
+#endif
+  return P;
+}
+
+struct ExceptionChecker {
+  std::errc expected_err;
+  fs::path expected_path1;
+  fs::path expected_path2;
+  unsigned num_paths;
+  const char* func_name;
+  std::string opt_message;
+
+  explicit ExceptionChecker(std::errc first_err, const char* fun_name,
+                            std::string opt_msg = {})
+      : expected_err{first_err}, num_paths(0), func_name(fun_name),
+        opt_message(opt_msg) {}
+  explicit ExceptionChecker(fs::path p, std::errc first_err,
+                            const char* fun_name, std::string opt_msg = {})
+      : expected_err(first_err), expected_path1(p), num_paths(1),
+        func_name(fun_name), opt_message(opt_msg) {}
+
+  explicit ExceptionChecker(fs::path p1, fs::path p2, std::errc first_err,
+                            const char* fun_name, std::string opt_msg = {})
+      : expected_err(first_err), expected_path1(p1), expected_path2(p2),
+        num_paths(2), func_name(fun_name), opt_message(opt_msg) {}
+
+  void operator()(fs::filesystem_error const& Err) {
+    TEST_CHECK(ErrorIsImp(Err.code(), {expected_err}));
+    TEST_CHECK(Err.path1() == expected_path1);
+    TEST_CHECK(Err.path2() == expected_path2);
+    LIBCPP_ONLY(check_libcxx_string(Err));
+  }
+
+  void check_libcxx_string(fs::filesystem_error const& Err) {
+    std::string message = std::make_error_code(expected_err).message();
+
+    std::string additional_msg = "";
+    if (!opt_message.empty()) {
+      additional_msg = opt_message + ": ";
+    }
+    auto transform_path = [](const fs::path& p) {
+      return "\"" + p.string() + "\"";
+    };
+    std::string format = [&]() -> std::string {
+      switch (num_paths) {
+      case 0:
+        return format_string("filesystem error: in %s: %s%s", func_name,
+                             additional_msg, message);
+      case 1:
+        return format_string("filesystem error: in %s: %s%s [%s]", func_name,
+                             additional_msg, message,
+                             transform_path(expected_path1).c_str());
+      case 2:
+        return format_string("filesystem error: in %s: %s%s [%s] [%s]",
+                             func_name, additional_msg, message,
+                             transform_path(expected_path1).c_str(),
+                             transform_path(expected_path2).c_str());
+      default:
+        TEST_CHECK(false && "unexpected case");
+        return "";
+      }
+    }();
+    TEST_CHECK(format == Err.what());
+    if (format != Err.what()) {
+      fprintf(stderr,
+              "filesystem_error::what() does not match expected output:\n");
+      fprintf(stderr, "  expected: \"%s\"\n", format.c_str());
+      fprintf(stderr, "  actual:   \"%s\"\n\n", Err.what());
+    }
+  }
+
+  ExceptionChecker(ExceptionChecker const&) = delete;
+  ExceptionChecker& operator=(ExceptionChecker const&) = delete;
+
+};
+
+inline fs::path GetWindowsInaccessibleDir() {
+  // Only makes sense on windows, but the code can be compiled for
+  // any platform.
+  const fs::path dir("C:\\System Volume Information");
+  std::error_code ec;
+  const fs::path root("C:\\");
+  for (const auto &ent : fs::directory_iterator(root, ec)) {
+    if (ent != dir)
+      continue;
+    // Basic sanity checks on the directory_entry
+    if (!ent.exists() || !ent.is_directory()) {
+      fprintf(stderr, "The expected inaccessible directory \"%s\" was found "
+                      "but doesn't behave as expected, skipping tests "
+                      "regarding it\n", dir.string().c_str());
+      return fs::path();
+    }
+    // Check that it indeed is inaccessible as expected
+    (void)fs::exists(ent, ec);
+    if (!ec) {
+      fprintf(stderr, "The expected inaccessible directory \"%s\" was found "
+                      "but seems to be accessible, skipping tests "
+                      "regarding it\n", dir.string().c_str());
+      return fs::path();
+    }
+    return ent;
+  }
+  fprintf(stderr, "No inaccessible directory \"%s\" found, skipping tests "
+                  "regarding it\n", dir.string().c_str());
+  return fs::path();
+}
+
+#endif /* FILESYSTEM_TEST_HELPER_H */
diff --git a/app/src/main/cpp/libcxx/test/support/format.functions.common.h b/app/src/main/cpp/libcxx/test/support/format.functions.common.h
new file mode 100644
index 0000000..769b1af
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/format.functions.common.h
@@ -0,0 +1,189 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_FORMAT_FUNCTIONS_COMMON_H
+#define TEST_SUPPORT_FORMAT_FUNCTIONS_COMMON_H
+
+// Contains the common part of the formatter tests for different papers.
+
+#include <algorithm>
+#include <charconv>
+#include <format>
+#include <ranges>
+#include <string>
+#include <string_view>
+#include <vector>
+
+#include "make_string.h"
+
+#define STR(S) MAKE_STRING(CharT, S)
+#define SV(S) MAKE_STRING_VIEW(CharT, S)
+#define CSTR(S) MAKE_CSTRING(CharT, S)
+
+template <class T>
+struct context {};
+
+template <>
+struct context<char> {
+  using type = std::format_context;
+};
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <>
+struct context<wchar_t> {
+  using type = std::wformat_context;
+};
+#endif
+
+template <class T>
+using context_t = typename context<T>::type;
+
+// A user-defined type used to test the handle formatter.
+enum class status : uint16_t { foo = 0xAAAA, bar = 0x5555, foobar = 0xAA55 };
+
+// The formatter for a user-defined type used to test the handle formatter.
+template <class CharT>
+struct std::formatter<status, CharT> {
+  int type = 0;
+
+  constexpr auto parse(basic_format_parse_context<CharT>& parse_ctx) -> decltype(parse_ctx.begin()) {
+    auto begin = parse_ctx.begin();
+    auto end = parse_ctx.end();
+    if (begin == end)
+      return begin;
+
+    switch (*begin) {
+    case CharT('x'):
+      break;
+    case CharT('X'):
+      type = 1;
+      break;
+    case CharT('s'):
+      type = 2;
+      break;
+    case CharT('}'):
+      return begin;
+    default:
+      throw_format_error("The format-spec type has a type not supported for a status argument");
+    }
+
+    ++begin;
+    if (begin != end && *begin != CharT('}'))
+      throw_format_error("The format-spec should consume the input or end with a '}'");
+
+    return begin;
+  }
+
+  template <class Out>
+  auto format(status s, basic_format_context<Out, CharT>& ctx) const -> decltype(ctx.out()) {
+    const char* names[] = {"foo", "bar", "foobar"};
+    char buffer[7];
+    const char* begin = names[0];
+    const char* end = names[0];
+    switch (type) {
+    case 0:
+      begin = buffer;
+      buffer[0] = '0';
+      buffer[1] = 'x';
+      end = std::to_chars(&buffer[2], std::end(buffer), static_cast<uint16_t>(s), 16).ptr;
+      buffer[6] = '\0';
+      break;
+
+    case 1:
+      begin = buffer;
+      buffer[0] = '0';
+      buffer[1] = 'X';
+      end = std::to_chars(&buffer[2], std::end(buffer), static_cast<uint16_t>(s), 16).ptr;
+      std::transform(static_cast<const char*>(&buffer[2]), end, &buffer[2], [](char c) {
+        return static_cast<char>(std::toupper(c)); });
+      buffer[6] = '\0';
+      break;
+
+    case 2:
+      switch (s) {
+      case status::foo:
+        begin = names[0];
+        break;
+      case status::bar:
+        begin = names[1];
+        break;
+      case status::foobar:
+        begin = names[2];
+        break;
+      }
+      end = begin + strlen(begin);
+      break;
+    }
+
+    return std::copy(begin, end, ctx.out());
+  }
+
+private:
+  void throw_format_error(const char* s) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    throw std::format_error(s);
+#else
+    (void)s;
+    std::abort();
+#endif
+  }
+};
+
+// Creates format string for the invalid types.
+//
+// valid contains a list of types that are valid.
+// - The type ?s is the only type requiring 2 characters, use S for that type.
+// - Whether n is a type or not depends on the context, is is always used.
+//
+// The return value is a collection of basic_strings, instead of
+// basic_string_views since the values are temporaries.
+namespace detail {
+template <class CharT, size_t N>
+std::basic_string<CharT> get_colons() {
+  static std::basic_string<CharT> result(N, CharT(':'));
+  return result;
+}
+
+constexpr std::string_view get_format_types() {
+  return "aAbBcdeEfFgGopsxX"
+#if TEST_STD_VER > 20
+         "?"
+#endif
+      ;
+}
+
+template <class CharT, /*format_types types,*/ size_t N>
+std::vector<std::basic_string<CharT>> fmt_invalid_types(std::string_view valid) {
+  // std::ranges::to is not available in C++20.
+  std::vector<std::basic_string<CharT>> result;
+  std::ranges::copy(
+      get_format_types() | std::views::filter([&](char type) { return valid.find(type) == std::string_view::npos; }) |
+          std::views::transform([&](char type) { return std::format(SV("{{{}{}}}"), get_colons<CharT, N>(), type); }),
+      std::back_inserter(result));
+  return result;
+}
+
+} // namespace detail
+
+// Creates format string for the invalid types.
+//
+// valid contains a list of types that are valid.
+//
+// The return value is a collection of basic_strings, instead of
+// basic_string_views since the values are temporaries.
+template <class CharT>
+std::vector<std::basic_string<CharT>> fmt_invalid_types(std::string_view valid) {
+  return detail::fmt_invalid_types<CharT, 1>(valid);
+}
+
+// Like fmt_invalid_types but when the format spec is for an underlying formatter.
+template <class CharT>
+std::vector<std::basic_string<CharT>> fmt_invalid_nested_types(std::string_view valid) {
+  return detail::fmt_invalid_types<CharT, 2>(valid);
+}
+
+#endif // TEST_SUPPORT_FORMAT_FUNCTIONS_COMMON_H
diff --git a/app/src/main/cpp/libcxx/test/support/format_string.h b/app/src/main/cpp/libcxx/test/support/format_string.h
new file mode 100644
index 0000000..230f2e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/format_string.h
@@ -0,0 +1,71 @@
+#ifndef TEST_SUPPORT_FORMAT_STRING_H
+#define TEST_SUPPORT_FORMAT_STRING_H
+
+#include <cstdio>
+#include <string>
+#include <memory>
+#include <array>
+#include <cstdarg>
+
+namespace format_string_detail {
+inline std::string format_string_imp(const char* msg, ...) {
+  // we might need a second shot at this, so pre-emptively make a copy
+  struct GuardVAList {
+    va_list& xtarget;
+    bool active;
+    GuardVAList(va_list& val) : xtarget(val), active(true) {}
+
+    void clear() {
+      if (active)
+        va_end(xtarget);
+      active = false;
+    }
+    ~GuardVAList() {
+      if (active)
+        va_end(xtarget);
+    }
+  };
+  va_list args;
+  va_start(args, msg);
+  GuardVAList args_guard(args);
+
+  va_list args_cp;
+  va_copy(args_cp, args);
+  GuardVAList args_copy_guard(args_cp);
+
+  std::array<char, 256> local_buff;
+  std::size_t size = local_buff.size();
+  auto ret = ::vsnprintf(local_buff.data(), size, msg, args_cp);
+
+  args_copy_guard.clear();
+
+  // handle empty expansion
+  if (ret == 0)
+    return std::string{};
+  if (static_cast<std::size_t>(ret) < size)
+    return std::string(local_buff.data());
+
+  // we did not provide a long enough buffer on our first attempt.
+  // add 1 to size to account for null-byte in size cast to prevent overflow
+  size = static_cast<std::size_t>(ret) + 1;
+  auto buff_ptr = std::unique_ptr<char[]>(new char[size]);
+  ret = ::vsnprintf(buff_ptr.get(), size, msg, args);
+  return std::string(buff_ptr.get());
+}
+
+const char* unwrap(std::string& s) { return s.c_str(); }
+template <class Arg>
+Arg const& unwrap(Arg& a) {
+  static_assert(!std::is_class<Arg>::value, "cannot pass class here");
+  return a;
+}
+
+} // namespace format_string_detail
+
+template <class... Args>
+std::string format_string(const char* fmt, Args const&... args) {
+  return format_string_detail::format_string_imp(
+      fmt, format_string_detail::unwrap(const_cast<Args&>(args))...);
+}
+
+#endif // TEST_SUPPORT_FORMAT_STRING_HPP
diff --git a/app/src/main/cpp/libcxx/test/support/fp_compare.h b/app/src/main/cpp/libcxx/test/support/fp_compare.h
new file mode 100644
index 0000000..1d1933b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/fp_compare.h
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_FP_COMPARE_H
+#define SUPPORT_FP_COMPARE_H
+
+#include <cmath>      // for std::abs
+#include <algorithm>  // for std::max
+#include <cassert>
+
+// See https://www.boost.org/doc/libs/1_70_0/libs/test/doc/html/boost_test/testing_tools/extended_comparison/floating_point/floating_points_comparison_theory.html
+
+template<typename T>
+bool fptest_close(T val, T expected, T eps)
+{
+    constexpr T zero = T(0);
+    assert(eps >= zero);
+
+    // Handle the zero cases
+    if (eps      == zero) return val == expected;
+    if (val      == zero) return std::abs(expected) <= eps;
+    if (expected == zero) return std::abs(val)      <= eps;
+
+    return std::abs(val - expected) < eps
+        && std::abs(val - expected)/std::abs(val) < eps;
+}
+
+template<typename T>
+bool fptest_close_pct(T val, T expected, T percent)
+{
+    constexpr T zero = T(0);
+    assert(percent >= zero);
+
+    // Handle the zero cases
+    if (percent == zero) return val == expected;
+    T eps = (percent / T(100)) * std::max(std::abs(val), std::abs(expected));
+
+    return fptest_close(val, expected, eps);
+}
+
+
+#endif // SUPPORT_FP_COMPARE_H
diff --git a/app/src/main/cpp/libcxx/test/support/hexfloat.h b/app/src/main/cpp/libcxx/test/support/hexfloat.h
new file mode 100644
index 0000000..23ad9a3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/hexfloat.h
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Define a hexfloat literal emulator since we can't depend on being able to
+//   for hexfloat literals
+
+// 0x10.F5p-10 == hexfloat<double>(0x10, 0xF5, -10)
+
+#ifndef HEXFLOAT_H
+#define HEXFLOAT_H
+
+#include <cmath>
+#include <climits>
+
+template <class T>
+class hexfloat
+{
+    T value_;
+
+    static int CountLeadingZeros(unsigned long long n) {
+        const std::size_t Digits = sizeof(unsigned long long) * CHAR_BIT;
+        const unsigned long long TopBit = 1ull << (Digits - 1);
+        if (n == 0) return Digits;
+        int LeadingZeros = 0;
+        while ((n & TopBit) == 0) {
+            ++LeadingZeros;
+            n <<= 1;
+        }
+        return LeadingZeros;
+    }
+
+public:
+    hexfloat(long long m1, unsigned long long m0, int exp)
+    {
+        const std::size_t Digits = sizeof(unsigned long long) * CHAR_BIT;
+        int s = m1 < 0 ? -1 : 1;
+        int exp2 = -static_cast<int>(Digits - CountLeadingZeros(m0)/4*4);
+        value_ = std::ldexp(m1 + s * std::ldexp(T(m0), exp2), exp);
+    }
+
+    operator T() const {return value_;}
+};
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/indirectly_readable.h b/app/src/main/cpp/libcxx/test/support/indirectly_readable.h
new file mode 100644
index 0000000..2439e2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/indirectly_readable.h
@@ -0,0 +1,39 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_SUPPORT_INDIRECTLY_READABLE_H
+#define LIBCXX_TEST_SUPPORT_INDIRECTLY_READABLE_H
+
+#include <type_traits>
+
+template <class Token>
+struct Common { };
+
+template <class Token>
+struct T1 : Common<Token> { };
+
+template <class Token>
+struct T2 : Common<Token> { };
+
+template <template <class> class T1Qual, template <class> class T2Qual, class Token>
+struct std::basic_common_reference<T1<Token>, T2<Token>, T1Qual, T2Qual> {
+  using type = Common<Token>;
+};
+template <template <class> class T2Qual, template <class> class T1Qual, class Token>
+struct std::basic_common_reference<T2<Token>, T1<Token>, T2Qual, T1Qual>
+  : std::basic_common_reference<T1<Token>, T2<Token>, T1Qual, T2Qual>
+{ };
+
+template <class Token>
+struct IndirectlyReadable {
+  using value_type = T1<Token>;
+  T2<Token>& operator*() const;
+};
+
+#endif // LIBCXX_TEST_SUPPORT_INDIRECTLY_READABLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/is_transparent.h b/app/src/main/cpp/libcxx/test/support/is_transparent.h
new file mode 100644
index 0000000..700c894
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/is_transparent.h
@@ -0,0 +1,86 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TRANSPARENT_H
+#define TRANSPARENT_H
+
+#include "test_macros.h"
+
+#include <functional> // for std::equal_to
+
+// testing transparent
+#if TEST_STD_VER > 11
+
+struct transparent_less
+{
+    template <class T, class U>
+    constexpr auto operator()(T&& t, U&& u) const
+    noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
+    -> decltype      (std::forward<T>(t) < std::forward<U>(u))
+        { return      std::forward<T>(t) < std::forward<U>(u); }
+    using is_transparent = void;  // correct
+};
+
+struct transparent_less_not_referenceable
+{
+    template <class T, class U>
+    constexpr auto operator()(T&& t, U&& u) const
+    noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
+    -> decltype      (std::forward<T>(t) < std::forward<U>(u))
+        { return      std::forward<T>(t) < std::forward<U>(u); }
+    using is_transparent = void () const &;  // it's a type; a weird one, but a type
+};
+
+struct transparent_less_no_type
+{
+    template <class T, class U>
+    constexpr auto operator()(T&& t, U&& u) const
+    noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
+    -> decltype      (std::forward<T>(t) < std::forward<U>(u))
+        { return      std::forward<T>(t) < std::forward<U>(u); }
+private:
+//    using is_transparent = void;  // error - should exist
+};
+
+struct transparent_less_private
+{
+    template <class T, class U>
+    constexpr auto operator()(T&& t, U&& u) const
+    noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
+    -> decltype      (std::forward<T>(t) < std::forward<U>(u))
+        { return      std::forward<T>(t) < std::forward<U>(u); }
+private:
+    using is_transparent = void;  // error - should be accessible
+};
+
+struct transparent_less_not_a_type
+{
+    template <class T, class U>
+    constexpr auto operator()(T&& t, U&& u) const
+    noexcept(noexcept(std::forward<T>(t) < std::forward<U>(u)))
+    -> decltype      (std::forward<T>(t) < std::forward<U>(u))
+        { return      std::forward<T>(t) < std::forward<U>(u); }
+
+    int is_transparent;  // error - should be a type
+};
+
+struct C2Int { // comparable to int
+    C2Int() : i_(0) {}
+    C2Int(int i): i_(i) {}
+    int get () const { return i_; }
+private:
+    int i_;
+    };
+
+bool operator <(int          rhs,   const C2Int& lhs) { return rhs       < lhs.get(); }
+bool operator <(const C2Int& rhs,   const C2Int& lhs) { return rhs.get() < lhs.get(); }
+bool operator <(const C2Int& rhs,            int lhs) { return rhs.get() < lhs; }
+
+#endif // TEST_STD_VER > 11
+
+#endif // TRANSPARENT_H
diff --git a/app/src/main/cpp/libcxx/test/support/iterator_traits_cpp17_iterators.h b/app/src/main/cpp/libcxx/test/support/iterator_traits_cpp17_iterators.h
new file mode 100644
index 0000000..2785601
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/iterator_traits_cpp17_iterators.h
@@ -0,0 +1,104 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_ITERATOR_TRAITS_ITERATOR_TRAITS_CPP17_ITERATORS
+#define TEST_SUPPORT_ITERATOR_TRAITS_ITERATOR_TRAITS_CPP17_ITERATORS
+
+struct iterator_traits_cpp17_iterator {
+  int& operator*();
+  iterator_traits_cpp17_iterator& operator++();
+  iterator_traits_cpp17_iterator operator++(int);
+};
+
+struct iterator_traits_cpp17_proxy_iterator {
+  int operator*();
+  iterator_traits_cpp17_proxy_iterator& operator++();
+
+  // this returns legcay_iterator, not iterator_traits_cpp17_proxy_iterator
+  iterator_traits_cpp17_iterator operator++(int);
+};
+
+struct iterator_traits_cpp17_input_iterator {
+  using difference_type = int;
+  using value_type = long;
+
+  int& operator*();
+  iterator_traits_cpp17_input_iterator& operator++();
+  iterator_traits_cpp17_input_iterator operator++(int);
+
+  bool operator==(iterator_traits_cpp17_input_iterator const&) const;
+};
+
+struct iterator_traits_cpp17_proxy_input_iterator {
+  using difference_type = int;
+  using value_type = long;
+
+  int operator*();
+  iterator_traits_cpp17_proxy_input_iterator& operator++();
+
+  // this returns legcay_input_iterator, not iterator_traits_cpp17_proxy_input_iterator
+  iterator_traits_cpp17_input_iterator operator++(int);
+
+  bool operator==(iterator_traits_cpp17_proxy_input_iterator const&) const;
+};
+
+struct iterator_traits_cpp17_forward_iterator {
+  using difference_type = int;
+  using value_type = int;
+
+  int& operator*();
+  iterator_traits_cpp17_forward_iterator& operator++();
+  iterator_traits_cpp17_forward_iterator operator++(int);
+
+  bool operator==(iterator_traits_cpp17_forward_iterator const&) const;
+};
+
+struct iterator_traits_cpp17_bidirectional_iterator {
+  using difference_type = int;
+  using value_type = int;
+
+  int& operator*();
+  iterator_traits_cpp17_bidirectional_iterator& operator++();
+  iterator_traits_cpp17_bidirectional_iterator operator++(int);
+  iterator_traits_cpp17_bidirectional_iterator& operator--();
+  iterator_traits_cpp17_bidirectional_iterator operator--(int);
+
+  bool operator==(iterator_traits_cpp17_bidirectional_iterator const&) const;
+};
+
+struct iterator_traits_cpp17_random_access_iterator {
+  using difference_type = int;
+  using value_type = int;
+
+  int& operator*();
+  int& operator[](difference_type);
+  iterator_traits_cpp17_random_access_iterator& operator++();
+  iterator_traits_cpp17_random_access_iterator operator++(int);
+  iterator_traits_cpp17_random_access_iterator& operator--();
+  iterator_traits_cpp17_random_access_iterator operator--(int);
+
+  bool operator==(iterator_traits_cpp17_random_access_iterator const&) const;
+  bool operator<(iterator_traits_cpp17_random_access_iterator const&) const;
+  bool operator>(iterator_traits_cpp17_random_access_iterator const&) const;
+  bool operator<=(iterator_traits_cpp17_random_access_iterator const&) const;
+  bool operator>=(iterator_traits_cpp17_random_access_iterator const&) const;
+
+  iterator_traits_cpp17_random_access_iterator& operator+=(difference_type);
+  iterator_traits_cpp17_random_access_iterator& operator-=(difference_type);
+
+  friend iterator_traits_cpp17_random_access_iterator operator+(iterator_traits_cpp17_random_access_iterator,
+                                                                difference_type);
+  friend iterator_traits_cpp17_random_access_iterator operator+(difference_type,
+                                                                iterator_traits_cpp17_random_access_iterator);
+  friend iterator_traits_cpp17_random_access_iterator operator-(iterator_traits_cpp17_random_access_iterator,
+                                                                difference_type);
+  friend difference_type operator-(iterator_traits_cpp17_random_access_iterator,
+                                   iterator_traits_cpp17_random_access_iterator);
+};
+
+#endif // TEST_SUPPORT_ITERATOR_TRAITS_ITERATOR_TRAITS_CPP17_ITERATORS
diff --git a/app/src/main/cpp/libcxx/test/support/locale_helpers.h b/app/src/main/cpp/libcxx/test/support/locale_helpers.h
new file mode 100644
index 0000000..3eb24eb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/locale_helpers.h
@@ -0,0 +1,116 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_SUPPORT_LOCALE_HELPERS_H
+#define LIBCXX_TEST_SUPPORT_LOCALE_HELPERS_H
+
+#include <string>
+#include "platform_support.h"
+#include "test_macros.h"
+#include "make_string.h"
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+
+#include <cwctype>
+
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+namespace LocaleHelpers {
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+
+std::wstring convert_thousands_sep(std::wstring const& in, wchar_t sep) {
+  std::wstring out;
+  bool seen_num_start = false;
+  bool seen_decimal = false;
+  for (unsigned i = 0; i < in.size(); ++i) {
+    seen_decimal |= in[i] == L',';
+    seen_num_start |= in[i] == L'-' || std::iswdigit(in[i]);
+    if (seen_decimal || !seen_num_start || in[i] != L' ') {
+      out.push_back(in[i]);
+      continue;
+    }
+    assert(in[i] == L' ');
+    out.push_back(sep);
+  }
+  return out;
+}
+
+// GLIBC 2.27 and newer use U+202F NARROW NO-BREAK SPACE as a thousands separator.
+// This function converts the spaces in string inputs to U+202F if need
+// be. FreeBSD's locale data also uses U+202F, since 2018.
+// Windows uses U+00A0 NO-BREAK SPACE.
+std::wstring convert_thousands_sep_fr_FR(std::wstring const& in) {
+#if defined(_CS_GNU_LIBC_VERSION)
+  if (glibc_version_less_than("2.27"))
+    return in;
+  else
+    return convert_thousands_sep(in, L'\u202F');
+#elif defined(__FreeBSD__)
+  return convert_thousands_sep(in, L'\u202F');
+#elif defined(_WIN32)
+  return convert_thousands_sep(in, L'\u00A0');
+#else
+  return in;
+#endif
+}
+
+// GLIBC 2.27 uses U+202F NARROW NO-BREAK SPACE as a thousands separator.
+// FreeBSD, AIX and Windows use U+00A0 NO-BREAK SPACE.
+std::wstring convert_thousands_sep_ru_RU(std::wstring const& in) {
+#if defined(TEST_HAS_GLIBC)
+  return convert_thousands_sep(in, L'\u202F');
+#  elif defined(__FreeBSD__) || defined(_WIN32) || defined(_AIX)
+  return convert_thousands_sep(in, L'\u00A0');
+#  else
+  return in;
+#  endif
+}
+
+std::wstring negate_en_US(std::wstring s) {
+#if defined(_WIN32)
+  return L"(" + s + L")";
+#else
+  return L"-" + s;
+#endif
+}
+
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+std::string negate_en_US(std::string s) {
+#if defined(_WIN32)
+  return "(" + s + ")";
+#else
+  return "-" + s;
+#endif
+}
+
+MultiStringType currency_symbol_ru_RU() {
+#if defined(_CS_GNU_LIBC_VERSION)
+  if (glibc_version_less_than("2.24"))
+    return MKSTR("\u0440\u0443\u0431");
+  else
+    return MKSTR("\u20BD"); // U+20BD RUBLE SIGN
+#elif defined(_WIN32) || defined(__FreeBSD__) || defined(_AIX)
+  return MKSTR("\u20BD"); // U+20BD RUBLE SIGN
+#else
+  return MKSTR("\u0440\u0443\u0431.");
+#endif
+}
+
+MultiStringType currency_symbol_zh_CN() {
+#if defined(_WIN32)
+  return MKSTR("\u00A5"); // U+00A5 YEN SIGN
+#else
+  return MKSTR("\uFFE5"); // U+FFE5 FULLWIDTH YEN SIGN
+#endif
+}
+
+} // namespace LocaleHelpers
+
+#endif // LIBCXX_TEST_SUPPORT_LOCALE_HELPERS_H
diff --git a/app/src/main/cpp/libcxx/test/support/make_implicit.h b/app/src/main/cpp/libcxx/test/support/make_implicit.h
new file mode 100644
index 0000000..8be5362
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/make_implicit.h
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_MAKE_IMPLICIT_H
+#define SUPPORT_MAKE_IMPLICIT_H
+
+// "make_implicit<Tp>(Args&&... args)" is a function to construct 'Tp'
+// from 'Args...' using implicit construction.
+
+#include <utility>
+
+template <class T, class... Args>
+T make_implicit(Args&&... args) {
+  return {std::forward<Args>(args)...};
+}
+
+#endif // SUPPORT_MAKE_IMPLICIT_H
diff --git a/app/src/main/cpp/libcxx/test/support/make_string.h b/app/src/main/cpp/libcxx/test/support/make_string.h
new file mode 100644
index 0000000..728b654
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/make_string.h
@@ -0,0 +1,102 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_MAKE_STRING_H
+#define SUPPORT_TEST_MAKE_STRING_H
+
+#include "test_macros.h"
+
+#include <string>
+#include <string_view>
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+# define MKSTR_WCHAR_ONLY(...) __VA_ARGS__
+# define MKSTR_AS_WCHAR_LITERAL(x) TEST_CONCAT(L, x), sizeof(TEST_CONCAT(L, x)) / sizeof(wchar_t) - 1
+#else
+# define MKSTR_WCHAR_ONLY(...)
+#endif
+
+#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
+#define MKSTR_CHAR8_ONLY(...) __VA_ARGS__
+#define MKSTR_AS_U8_LITERAL(x) TEST_CONCAT(u8, x), sizeof(TEST_CONCAT(u8, x)) / sizeof(char8_t) - 1
+#else
+#define MKSTR_CHAR8_ONLY(...)
+#endif
+
+#if TEST_STD_VER >= 11
+#define MKSTR_CXX11_ONLY(...) __VA_ARGS__
+#define MKSTR_AS_U16_LITERAL(x) TEST_CONCAT(u, x), sizeof(TEST_CONCAT(u, x)) / sizeof(char16_t) - 1
+#define MKSTR_AS_U32_LITERAL(x) TEST_CONCAT(U, x), sizeof(TEST_CONCAT(U, x)) / sizeof(char32_t) - 1
+#else
+#define MKSTR_CXX11_ONLY(...)
+#endif
+
+#define MKSTR(Str) MultiStringType(                \
+    MKSTR_WCHAR_ONLY(MKSTR_AS_WCHAR_LITERAL(Str),) \
+    MKSTR_CHAR8_ONLY(MKSTR_AS_U8_LITERAL(Str),)    \
+    MKSTR_CXX11_ONLY(MKSTR_AS_U16_LITERAL(Str),    \
+                     MKSTR_AS_U32_LITERAL(Str),)   \
+    Str, sizeof(Str) - 1                           \
+  )
+
+#define MKSTR_LEN(CharT, Str) MKSTR(Str).length((const CharT*)0)
+
+struct MultiStringType {
+  MKSTR_WCHAR_ONLY(const wchar_t* w_; size_t wn_; )
+  MKSTR_CHAR8_ONLY(const char8_t* u8_; size_t u8n_; )
+  MKSTR_CXX11_ONLY(const char16_t* u16_; size_t u16n_; )
+  MKSTR_CXX11_ONLY(const char32_t* u32_; size_t u32n_; )
+  const char* s_; size_t sn_;
+
+  TEST_CONSTEXPR MultiStringType(
+      MKSTR_WCHAR_ONLY(const wchar_t *w, size_t wn,)
+      MKSTR_CHAR8_ONLY(const char8_t *u8, size_t u8n,)
+      MKSTR_CXX11_ONLY(const char16_t *u16, size_t u16n,)
+      MKSTR_CXX11_ONLY(const char32_t *u32, size_t u32n,)
+      const char *s, size_t sn)
+    : MKSTR_WCHAR_ONLY(w_(w), wn_(wn),)
+      MKSTR_CHAR8_ONLY(u8_(u8), u8n_(u8n),)
+      MKSTR_CXX11_ONLY(u16_(u16), u16n_(u16n),)
+      MKSTR_CXX11_ONLY(u32_(u32), u32n_(u32n),)
+      s_(s), sn_(sn) {}
+
+  TEST_CONSTEXPR const char *as_ptr(const char*) const { return s_; }
+  MKSTR_WCHAR_ONLY(TEST_CONSTEXPR const wchar_t *as_ptr(const wchar_t*) const { return w_; })
+  MKSTR_CHAR8_ONLY(constexpr const char8_t *as_ptr(const char8_t*) const { return u8_; })
+  MKSTR_CXX11_ONLY(constexpr const char16_t *as_ptr(const char16_t*) const { return u16_; })
+  MKSTR_CXX11_ONLY(constexpr const char32_t *as_ptr(const char32_t*) const { return u32_; })
+
+  TEST_CONSTEXPR size_t length(const char*) const { return sn_; }
+  MKSTR_WCHAR_ONLY(TEST_CONSTEXPR size_t length(const wchar_t*) const { return wn_; })
+  MKSTR_CHAR8_ONLY(constexpr size_t length(const char8_t*) const { return u8n_; })
+  MKSTR_CXX11_ONLY(constexpr size_t length(const char16_t*) const { return u16n_; })
+  MKSTR_CXX11_ONLY(constexpr size_t length(const char32_t*) const { return u32n_; })
+
+  // These implicit conversions are used by some tests. TODO: maybe eliminate them?
+  TEST_CONSTEXPR operator const char*() const { return s_; }
+  MKSTR_WCHAR_ONLY(TEST_CONSTEXPR operator const wchar_t*() const { return w_; })
+  MKSTR_CHAR8_ONLY(constexpr operator const char8_t*() const { return u8_; })
+  MKSTR_CXX11_ONLY(constexpr operator const char16_t*() const { return u16_; })
+  MKSTR_CXX11_ONLY(constexpr operator const char32_t*() const { return u32_; })
+};
+
+// Helper to convert a const char* string to a const CharT*.
+// This helper is used in unit tests to make them generic. The input should be
+// valid ASCII which means the input is also valid UTF-8.
+#define MAKE_CSTRING(CharT, Str)                                               \
+  MKSTR(Str).as_ptr(static_cast<const CharT*>(nullptr))
+
+// Like MAKE_CSTRING but makes a basic_string<CharT>. Embedded nulls are OK.
+#define MAKE_STRING(CharT, Str)                                                \
+  std::basic_string<CharT>(MAKE_CSTRING(CharT, Str), MKSTR_LEN(CharT, Str))
+
+// Like MAKE_CSTRING but makes a basic_string_view<CharT>. Embedded nulls are OK.
+#define MAKE_STRING_VIEW(CharT, Str)                                           \
+  std::basic_string_view<CharT>(MAKE_CSTRING(CharT, Str), MKSTR_LEN(CharT, Str))
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/make_test_thread.h b/app/src/main/cpp/libcxx/test/support/make_test_thread.h
new file mode 100644
index 0000000..eaf967e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/make_test_thread.h
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_MAKE_TEST_THREAD_H
+#define TEST_SUPPORT_MAKE_TEST_THREAD_H
+
+#include <thread>
+#include <utility>
+
+namespace support {
+
+template <class F, class ...Args>
+std::thread make_test_thread(F&& f, Args&& ...args) {
+    return std::thread(std::forward<F>(f), std::forward<Args>(args)...);
+}
+
+} // end namespace support
+
+#endif // TEST_SUPPORT_MAKE_TEST_THREAD_H
diff --git a/app/src/main/cpp/libcxx/test/support/min_allocator.h b/app/src/main/cpp/libcxx/test/support/min_allocator.h
new file mode 100644
index 0000000..f27ac80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/min_allocator.h
@@ -0,0 +1,435 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MIN_ALLOCATOR_H
+#define MIN_ALLOCATOR_H
+
+#include <cassert>
+#include <climits>
+#include <cstddef>
+#include <cstdlib>
+#include <iterator>
+#include <memory>
+#include <new>
+#include <type_traits>
+
+#include "test_macros.h"
+
+template <class T>
+class bare_allocator
+{
+public:
+    typedef T value_type;
+
+    bare_allocator() TEST_NOEXCEPT {}
+
+    template <class U>
+    bare_allocator(bare_allocator<U>) TEST_NOEXCEPT {}
+
+    T* allocate(std::size_t n)
+    {
+        return static_cast<T*>(::operator new(n*sizeof(T)));
+    }
+
+    void deallocate(T* p, std::size_t)
+    {
+        return ::operator delete(static_cast<void*>(p));
+    }
+
+    friend bool operator==(bare_allocator, bare_allocator) {return true;}
+    friend bool operator!=(bare_allocator x, bare_allocator y) {return !(x == y);}
+};
+
+
+template <class T>
+class no_default_allocator
+{
+#if TEST_STD_VER >= 11
+    no_default_allocator() = delete;
+#else
+    no_default_allocator();
+#endif
+    struct construct_tag {};
+    explicit no_default_allocator(construct_tag) {}
+
+public:
+    static no_default_allocator create() {
+      construct_tag tag;
+      return no_default_allocator(tag);
+    }
+
+public:
+    typedef T value_type;
+
+    template <class U>
+    no_default_allocator(no_default_allocator<U>) TEST_NOEXCEPT {}
+
+    T* allocate(std::size_t n)
+    {
+        return static_cast<T*>(::operator new(n*sizeof(T)));
+    }
+
+    void deallocate(T* p, std::size_t)
+    {
+        return ::operator delete(static_cast<void*>(p));
+    }
+
+    friend bool operator==(no_default_allocator, no_default_allocator) {return true;}
+    friend bool operator!=(no_default_allocator x, no_default_allocator y) {return !(x == y);}
+};
+
+struct malloc_allocator_base {
+    static size_t outstanding_bytes;
+    static size_t alloc_count;
+    static size_t dealloc_count;
+    static bool disable_default_constructor;
+
+    static size_t outstanding_alloc() {
+      assert(alloc_count >= dealloc_count);
+      return (alloc_count - dealloc_count);
+    }
+
+    static void reset() {
+        assert(outstanding_alloc() == 0);
+        disable_default_constructor = false;
+        outstanding_bytes = 0;
+        alloc_count = 0;
+        dealloc_count = 0;
+    }
+};
+
+size_t malloc_allocator_base::outstanding_bytes = 0;
+size_t malloc_allocator_base::alloc_count = 0;
+size_t malloc_allocator_base::dealloc_count = 0;
+bool malloc_allocator_base::disable_default_constructor = false;
+
+
+template <class T>
+class malloc_allocator : public malloc_allocator_base
+{
+public:
+    typedef T value_type;
+
+    malloc_allocator() TEST_NOEXCEPT { assert(!disable_default_constructor); }
+
+    template <class U>
+    malloc_allocator(malloc_allocator<U>) TEST_NOEXCEPT {}
+
+    T* allocate(std::size_t n)
+    {
+        const size_t nbytes = n*sizeof(T);
+        ++alloc_count;
+        outstanding_bytes += nbytes;
+        return static_cast<T*>(std::malloc(nbytes));
+    }
+
+    void deallocate(T* p, std::size_t n)
+    {
+        const size_t nbytes = n*sizeof(T);
+        ++dealloc_count;
+        outstanding_bytes -= nbytes;
+        std::free(static_cast<void*>(p));
+    }
+
+    friend bool operator==(malloc_allocator, malloc_allocator) {return true;}
+    friend bool operator!=(malloc_allocator x, malloc_allocator y) {return !(x == y);}
+};
+
+template <class T>
+struct cpp03_allocator : bare_allocator<T>
+{
+    typedef T value_type;
+    typedef value_type* pointer;
+
+    static bool construct_called;
+
+    // Returned value is not used but it's not prohibited.
+    pointer construct(pointer p, const value_type& val)
+    {
+        ::new(p) value_type(val);
+        construct_called = true;
+        return p;
+    }
+
+    std::size_t max_size() const
+    {
+        return UINT_MAX / sizeof(T);
+    }
+};
+template <class T> bool cpp03_allocator<T>::construct_called = false;
+
+template <class T>
+struct cpp03_overload_allocator : bare_allocator<T>
+{
+    typedef T value_type;
+    typedef value_type* pointer;
+
+    static bool construct_called;
+
+    void construct(pointer p, const value_type& val)
+    {
+        construct(p, val, std::is_class<T>());
+    }
+    void construct(pointer p, const value_type& val, std::true_type)
+    {
+        ::new(p) value_type(val);
+        construct_called = true;
+    }
+    void construct(pointer p, const value_type& val, std::false_type)
+    {
+        ::new(p) value_type(val);
+        construct_called = true;
+    }
+
+    std::size_t max_size() const
+    {
+        return UINT_MAX / sizeof(T);
+    }
+};
+template <class T> bool cpp03_overload_allocator<T>::construct_called = false;
+
+template <class T, class = std::integral_constant<size_t, 0> > class min_pointer;
+template <class T, class ID> class min_pointer<const T, ID>;
+template <class ID> class min_pointer<void, ID>;
+template <class ID> class min_pointer<const void, ID>;
+template <class T> class min_allocator;
+
+template <class ID>
+class min_pointer<const void, ID>
+{
+    const void* ptr_;
+public:
+    min_pointer() TEST_NOEXCEPT = default;
+    min_pointer(std::nullptr_t) TEST_NOEXCEPT : ptr_(nullptr) {}
+    template <class T>
+    min_pointer(min_pointer<T, ID> p) TEST_NOEXCEPT : ptr_(p.ptr_) {}
+
+    explicit operator bool() const {return ptr_ != nullptr;}
+
+    friend bool operator==(min_pointer x, min_pointer y) {return x.ptr_ == y.ptr_;}
+    friend bool operator!=(min_pointer x, min_pointer y) {return !(x == y);}
+    template <class U, class XID> friend class min_pointer;
+};
+
+template <class ID>
+class min_pointer<void, ID>
+{
+    void* ptr_;
+public:
+    min_pointer() TEST_NOEXCEPT = default;
+    TEST_CONSTEXPR_CXX14 min_pointer(std::nullptr_t) TEST_NOEXCEPT : ptr_(nullptr) {}
+    template <class T,
+              class = typename std::enable_if
+                       <
+                            !std::is_const<T>::value
+                       >::type
+             >
+    TEST_CONSTEXPR_CXX14 min_pointer(min_pointer<T, ID> p) TEST_NOEXCEPT : ptr_(p.ptr_) {}
+
+    TEST_CONSTEXPR_CXX14 explicit operator bool() const {return ptr_ != nullptr;}
+
+    TEST_CONSTEXPR_CXX14 friend bool operator==(min_pointer x, min_pointer y) {return x.ptr_ == y.ptr_;}
+    TEST_CONSTEXPR_CXX14 friend bool operator!=(min_pointer x, min_pointer y) {return !(x == y);}
+    template <class U, class XID> friend class min_pointer;
+};
+
+template <class T, class ID>
+class min_pointer
+{
+    T* ptr_;
+
+    TEST_CONSTEXPR_CXX14 explicit min_pointer(T* p) TEST_NOEXCEPT : ptr_(p) {}
+public:
+    min_pointer() TEST_NOEXCEPT = default;
+    TEST_CONSTEXPR_CXX14 min_pointer(std::nullptr_t) TEST_NOEXCEPT : ptr_(nullptr) {}
+    TEST_CONSTEXPR_CXX14 explicit min_pointer(min_pointer<void, ID> p) TEST_NOEXCEPT : ptr_(static_cast<T*>(p.ptr_)) {}
+
+    TEST_CONSTEXPR_CXX14 explicit operator bool() const {return ptr_ != nullptr;}
+
+    typedef std::ptrdiff_t difference_type;
+    typedef T& reference;
+    typedef T* pointer;
+    typedef T value_type;
+    typedef std::random_access_iterator_tag iterator_category;
+
+    TEST_CONSTEXPR_CXX14 reference operator*() const {return *ptr_;}
+    TEST_CONSTEXPR_CXX14 pointer operator->() const {return ptr_;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer& operator++() {++ptr_; return *this;}
+    TEST_CONSTEXPR_CXX14 min_pointer operator++(int) {min_pointer tmp(*this); ++ptr_; return tmp;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer& operator--() {--ptr_; return *this;}
+    TEST_CONSTEXPR_CXX14 min_pointer operator--(int) {min_pointer tmp(*this); --ptr_; return tmp;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer& operator+=(difference_type n) {ptr_ += n; return *this;}
+    TEST_CONSTEXPR_CXX14 min_pointer& operator-=(difference_type n) {ptr_ -= n; return *this;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer operator+(difference_type n) const
+    {
+        min_pointer tmp(*this);
+        tmp += n;
+        return tmp;
+    }
+
+    friend TEST_CONSTEXPR_CXX14 min_pointer operator+(difference_type n, min_pointer x)
+    {
+        return x + n;
+    }
+
+    TEST_CONSTEXPR_CXX14 min_pointer operator-(difference_type n) const
+    {
+        min_pointer tmp(*this);
+        tmp -= n;
+        return tmp;
+    }
+
+    friend TEST_CONSTEXPR_CXX14 difference_type operator-(min_pointer x, min_pointer y)
+    {
+        return x.ptr_ - y.ptr_;
+    }
+
+    TEST_CONSTEXPR_CXX14 reference operator[](difference_type n) const {return ptr_[n];}
+
+    friend TEST_CONSTEXPR_CXX14 bool operator< (min_pointer x, min_pointer y) {return x.ptr_ < y.ptr_;}
+    friend TEST_CONSTEXPR_CXX14 bool operator> (min_pointer x, min_pointer y) {return y < x;}
+    friend TEST_CONSTEXPR_CXX14 bool operator<=(min_pointer x, min_pointer y) {return !(y < x);}
+    friend TEST_CONSTEXPR_CXX14 bool operator>=(min_pointer x, min_pointer y) {return !(x < y);}
+
+    static TEST_CONSTEXPR_CXX14 min_pointer pointer_to(T& t) {return min_pointer(std::addressof(t));}
+
+    friend TEST_CONSTEXPR_CXX14 bool operator==(min_pointer x, min_pointer y) {return x.ptr_ == y.ptr_;}
+    friend TEST_CONSTEXPR_CXX14 bool operator!=(min_pointer x, min_pointer y) {return !(x == y);}
+    template <class U, class XID> friend class min_pointer;
+    template <class U> friend class min_allocator;
+};
+
+template <class T, class ID>
+class min_pointer<const T, ID>
+{
+    const T* ptr_;
+
+    TEST_CONSTEXPR_CXX14 explicit min_pointer(const T* p) : ptr_(p) {}
+public:
+    min_pointer() TEST_NOEXCEPT = default;
+    TEST_CONSTEXPR_CXX14 min_pointer(std::nullptr_t) : ptr_(nullptr) {}
+    TEST_CONSTEXPR_CXX14 min_pointer(min_pointer<T, ID> p) : ptr_(p.ptr_) {}
+    TEST_CONSTEXPR_CXX14 explicit min_pointer(min_pointer<const void, ID> p) : ptr_(static_cast<const T*>(p.ptr_)) {}
+
+    TEST_CONSTEXPR_CXX14 explicit operator bool() const {return ptr_ != nullptr;}
+
+    typedef std::ptrdiff_t difference_type;
+    typedef const T& reference;
+    typedef const T* pointer;
+    typedef const T value_type;
+    typedef std::random_access_iterator_tag iterator_category;
+
+    TEST_CONSTEXPR_CXX14 reference operator*() const {return *ptr_;}
+    TEST_CONSTEXPR_CXX14 pointer operator->() const {return ptr_;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer& operator++() {++ptr_; return *this;}
+    TEST_CONSTEXPR_CXX14 min_pointer operator++(int) {min_pointer tmp(*this); ++ptr_; return tmp;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer& operator--() {--ptr_; return *this;}
+    TEST_CONSTEXPR_CXX14 min_pointer operator--(int) {min_pointer tmp(*this); --ptr_; return tmp;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer& operator+=(difference_type n) {ptr_ += n; return *this;}
+    TEST_CONSTEXPR_CXX14 min_pointer& operator-=(difference_type n) {ptr_ -= n; return *this;}
+
+    TEST_CONSTEXPR_CXX14 min_pointer operator+(difference_type n) const
+    {
+        min_pointer tmp(*this);
+        tmp += n;
+        return tmp;
+    }
+
+    friend TEST_CONSTEXPR_CXX14 min_pointer operator+(difference_type n, min_pointer x)
+    {
+        return x + n;
+    }
+
+    TEST_CONSTEXPR_CXX14 min_pointer operator-(difference_type n) const
+    {
+        min_pointer tmp(*this);
+        tmp -= n;
+        return tmp;
+    }
+
+    friend TEST_CONSTEXPR_CXX14 difference_type operator-(min_pointer x, min_pointer y)
+    {
+        return x.ptr_ - y.ptr_;
+    }
+
+    TEST_CONSTEXPR_CXX14 reference operator[](difference_type n) const {return ptr_[n];}
+
+    friend TEST_CONSTEXPR_CXX14 bool operator< (min_pointer x, min_pointer y) {return x.ptr_ < y.ptr_;}
+    friend TEST_CONSTEXPR_CXX14 bool operator> (min_pointer x, min_pointer y) {return y < x;}
+    friend TEST_CONSTEXPR_CXX14 bool operator<=(min_pointer x, min_pointer y) {return !(y < x);}
+    friend TEST_CONSTEXPR_CXX14 bool operator>=(min_pointer x, min_pointer y) {return !(x < y);}
+
+    static TEST_CONSTEXPR_CXX14 min_pointer pointer_to(const T& t) {return min_pointer(std::addressof(t));}
+
+    friend TEST_CONSTEXPR_CXX14 bool operator==(min_pointer x, min_pointer y) {return x.ptr_ == y.ptr_;}
+    friend TEST_CONSTEXPR_CXX14 bool operator!=(min_pointer x, min_pointer y) {return x.ptr_ != y.ptr_;}
+    friend TEST_CONSTEXPR_CXX14 bool operator==(min_pointer x, std::nullptr_t) {return x.ptr_ == nullptr;}
+    friend TEST_CONSTEXPR_CXX14 bool operator!=(min_pointer x, std::nullptr_t) {return x.ptr_ != nullptr;}
+    friend TEST_CONSTEXPR_CXX14 bool operator==(std::nullptr_t, min_pointer x) {return x.ptr_ == nullptr;}
+    friend TEST_CONSTEXPR_CXX14 bool operator!=(std::nullptr_t, min_pointer x) {return x.ptr_ != nullptr;}
+    template <class U, class XID> friend class min_pointer;
+};
+
+template <class T>
+class min_allocator
+{
+public:
+    typedef T value_type;
+    typedef min_pointer<T> pointer;
+
+    min_allocator() = default;
+    template <class U>
+    TEST_CONSTEXPR_CXX20 min_allocator(min_allocator<U>) {}
+
+    TEST_CONSTEXPR_CXX20 pointer allocate(std::ptrdiff_t n)
+    {
+        return pointer(std::allocator<T>().allocate(n));
+    }
+
+    TEST_CONSTEXPR_CXX20 void deallocate(pointer p, std::ptrdiff_t n)
+    {
+        std::allocator<T>().deallocate(p.ptr_, n);
+    }
+
+    TEST_CONSTEXPR_CXX20 friend bool operator==(min_allocator, min_allocator) {return true;}
+    TEST_CONSTEXPR_CXX20 friend bool operator!=(min_allocator x, min_allocator y) {return !(x == y);}
+};
+
+template <class T>
+class explicit_allocator
+{
+public:
+    typedef T value_type;
+
+    TEST_CONSTEXPR_CXX20 explicit_allocator() TEST_NOEXCEPT {}
+
+    template <class U>
+    TEST_CONSTEXPR_CXX20 explicit explicit_allocator(explicit_allocator<U>) TEST_NOEXCEPT {}
+
+    TEST_CONSTEXPR_CXX20 T* allocate(std::size_t n)
+    {
+        return static_cast<T*>(std::allocator<T>().allocate(n));
+    }
+
+    TEST_CONSTEXPR_CXX20 void deallocate(T* p, std::size_t n)
+    {
+        std::allocator<T>().deallocate(p, n);
+    }
+
+    TEST_CONSTEXPR_CXX20 friend bool operator==(explicit_allocator, explicit_allocator) {return true;}
+    TEST_CONSTEXPR_CXX20 friend bool operator!=(explicit_allocator x, explicit_allocator y) {return !(x == y);}
+};
+
+#endif // MIN_ALLOCATOR_H
diff --git a/app/src/main/cpp/libcxx/test/support/msvc_stdlib_force_include.h b/app/src/main/cpp/libcxx/test/support/msvc_stdlib_force_include.h
new file mode 100644
index 0000000..3c61f0b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/msvc_stdlib_force_include.h
@@ -0,0 +1,110 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_MSVC_STDLIB_FORCE_INCLUDE_H
+#define SUPPORT_MSVC_STDLIB_FORCE_INCLUDE_H
+
+// This header is force-included when running the libc++ tests against the
+// MSVC standard library.
+
+#ifndef _LIBCXX_IN_DEVCRT
+    // Silence warnings about CRT machinery.
+    #define _CRT_SECURE_NO_WARNINGS 1
+
+    // Avoid assertion dialogs.
+    #define _CRT_SECURE_INVALID_PARAMETER(EXPR) ::abort()
+#endif // _LIBCXX_IN_DEVCRT
+
+#include <crtdbg.h>
+#include <stdlib.h>
+
+#if defined(_LIBCPP_VERSION)
+    #error This header may not be used when targeting libc++
+#endif
+
+#ifndef _LIBCXX_IN_DEVCRT
+struct AssertionDialogAvoider {
+    AssertionDialogAvoider() {
+        _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
+        _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
+
+        _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);
+        _CrtSetReportFile(_CRT_ERROR, _CRTDBG_FILE_STDERR);
+    }
+};
+
+const AssertionDialogAvoider assertion_dialog_avoider{};
+#endif // _LIBCXX_IN_DEVCRT
+
+// MSVC frontend only configurations
+#if !defined(__clang__)
+    // Simulate feature-test macros.
+    #define __has_feature(X) _MSVC_HAS_FEATURE_ ## X
+    #define _MSVC_HAS_FEATURE_cxx_exceptions    1
+    #define _MSVC_HAS_FEATURE_cxx_rtti          1
+    #define _MSVC_HAS_FEATURE_address_sanitizer 0
+    #define _MSVC_HAS_FEATURE_memory_sanitizer  0
+    #define _MSVC_HAS_FEATURE_thread_sanitizer  0
+
+    #define __has_attribute(X) _MSVC_HAS_ATTRIBUTE_ ## X
+    #define _MSVC_HAS_ATTRIBUTE_vector_size     0
+
+    // Silence compiler warnings.
+    #pragma warning(disable: 4180) // qualifier applied to function type has no meaning; ignored
+    #pragma warning(disable: 4324) // structure was padded due to alignment specifier
+    #pragma warning(disable: 4521) // multiple copy constructors specified
+    #pragma warning(disable: 4702) // unreachable code
+    #pragma warning(disable: 28251) // Inconsistent annotation for 'new': this instance has no annotations.
+#endif // !defined(__clang__)
+
+#ifndef _LIBCXX_IN_DEVCRT
+    // atomic_is_lock_free.pass.cpp needs this VS 2015 Update 2 fix.
+    #define _ENABLE_ATOMIC_ALIGNMENT_FIX
+
+    // Restore features that are removed in C++20.
+    #define _HAS_FEATURES_REMOVED_IN_CXX20 1
+
+    // Silence warnings about the unspecified complex<non-floating-point>
+    #define _SILENCE_NONFLOATING_COMPLEX_DEPRECATION_WARNING
+
+    // Silence warnings about features that are deprecated in non-default language modes.
+    #define _SILENCE_ALL_CXX17_DEPRECATION_WARNINGS
+    #define _SILENCE_ALL_CXX20_DEPRECATION_WARNINGS
+    #define _SILENCE_ALL_CXX23_DEPRECATION_WARNINGS
+#endif // _LIBCXX_IN_DEVCRT
+
+#include <version>
+
+#if _HAS_CXX23
+    #define TEST_STD_VER 99
+#elif _HAS_CXX20
+    #define TEST_STD_VER 20
+#elif _HAS_CXX17
+    #define TEST_STD_VER 17
+#else
+    #define TEST_STD_VER 14
+#endif
+
+#define _LIBCPP_AVAILABILITY_THROW_BAD_ANY_CAST
+
+#ifdef __clang__
+#define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \
+    _Pragma("GCC diagnostic push") \
+    _Pragma("GCC diagnostic ignored \"-Wdeprecated\"")
+#define _LIBCPP_SUPPRESS_DEPRECATED_POP \
+    _Pragma("GCC diagnostic pop")
+#else // ^^^ clang / MSVC vvv
+#define _LIBCPP_SUPPRESS_DEPRECATED_PUSH \
+    __pragma(warning(push)) \
+    __pragma(warning(disable : 4996)) \
+    __pragma(warning(disable : 5215))
+#define _LIBCPP_SUPPRESS_DEPRECATED_POP \
+    __pragma(warning(pop))
+#endif // __clang__
+
+#endif // SUPPORT_MSVC_STDLIB_FORCE_INCLUDE_H
diff --git a/app/src/main/cpp/libcxx/test/support/nasty_containers.h b/app/src/main/cpp/libcxx/test/support/nasty_containers.h
new file mode 100644
index 0000000..0b56a27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/nasty_containers.h
@@ -0,0 +1,312 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef NASTY_CONTAINERS_H
+#define NASTY_CONTAINERS_H
+
+#include <cassert>
+#include <vector>
+#include <list>
+
+#include "test_macros.h"
+
+template <class T>
+class nasty_vector
+{
+public:
+    typedef typename std::vector<T>                           nested_container;
+    typedef typename nested_container::value_type             value_type;
+    typedef typename nested_container::reference              reference;
+    typedef typename nested_container::const_reference        const_reference;
+    typedef typename nested_container::iterator               iterator;
+    typedef typename nested_container::const_iterator         const_iterator;
+
+    typedef typename nested_container::size_type              size_type;
+    typedef typename nested_container::difference_type        difference_type;
+    typedef typename nested_container::pointer                pointer;
+    typedef typename nested_container::const_pointer          const_pointer;
+
+    typedef typename nested_container::reverse_iterator       reverse_iterator;
+    typedef typename nested_container::const_reverse_iterator const_reverse_iterator;
+
+    nasty_vector() : v_() {}
+    explicit nasty_vector(size_type n) : v_(n) {}
+    nasty_vector(size_type n, const value_type& value) : v_(n, value) {}
+    template <class InputIterator> nasty_vector(InputIterator first, InputIterator last) : v_(first, last) {}
+#if TEST_STD_VER >= 11
+    nasty_vector(std::initializer_list<value_type> il) : v_(il) {}
+#endif
+    ~nasty_vector() {}
+
+    template <class InputIterator>
+        void assign(InputIterator first, InputIterator last) { v_.assign(first, last); }
+    void assign(size_type n, const value_type& u) { v_.assign(n, u); }
+#if TEST_STD_VER >= 11
+    void assign(std::initializer_list<value_type> il)  { v_.assign(il); }
+#endif
+
+    iterator               begin() TEST_NOEXCEPT         { return v_.begin(); }
+    const_iterator         begin()   const TEST_NOEXCEPT { return v_.begin(); }
+    iterator               end() TEST_NOEXCEPT           { return v_.end(); }
+    const_iterator         end()     const TEST_NOEXCEPT { return v_.end(); }
+
+    reverse_iterator       rbegin() TEST_NOEXCEPT        { return v_.rbegin(); }
+    const_reverse_iterator rbegin()  const TEST_NOEXCEPT { return v_.rbegin(); }
+    reverse_iterator       rend() TEST_NOEXCEPT          { return v_.rend(); }
+    const_reverse_iterator rend()    const TEST_NOEXCEPT { return v_.rend(); }
+
+    const_iterator         cbegin()  const TEST_NOEXCEPT { return v_.cbegin(); }
+    const_iterator         cend()    const TEST_NOEXCEPT { return v_.cend(); }
+    const_reverse_iterator crbegin() const TEST_NOEXCEPT { return v_.crbegin(); }
+    const_reverse_iterator crend()   const TEST_NOEXCEPT { return v_.crend(); }
+
+    size_type size() const TEST_NOEXCEPT      { return v_.size(); }
+    size_type max_size() const TEST_NOEXCEPT  { return v_.max_size(); }
+    size_type capacity() const TEST_NOEXCEPT  { return v_.capacity(); }
+    bool empty() const TEST_NOEXCEPT          { return v_.empty(); }
+    void reserve(size_type n)             { v_.reserve(n); };
+    void shrink_to_fit() TEST_NOEXCEPT        { v_.shrink_to_fit(); }
+
+    reference       operator[](size_type n)       { return v_[n]; }
+    const_reference operator[](size_type n) const { return v_[n]; }
+    reference       at(size_type n)               { return v_.at(n); }
+    const_reference at(size_type n) const         { return v_.at(n); }
+
+    reference       front()       { return v_.front(); }
+    const_reference front() const { return v_.front(); }
+    reference       back()        { return v_.back(); }
+    const_reference back() const  { return v_.back(); }
+
+    value_type*       data() TEST_NOEXCEPT       { return v_.data(); }
+    const value_type* data() const TEST_NOEXCEPT { return v_.data(); }
+
+    void push_back(const value_type& x)     { v_.push_back(x); }
+#if TEST_STD_VER >= 11
+    void push_back(value_type&& x)          { v_.push_back(std::forward<value_type&&>(x)); }
+    template <class... Args>
+        void emplace_back(Args&&... args)   { v_.emplace_back(std::forward<Args>(args)...); }
+#endif
+    void pop_back()                         { v_.pop_back(); }
+
+#if TEST_STD_VER >= 11
+    template <class... Args> iterator emplace(const_iterator pos, Args&&... args)
+    { return v_.emplace(pos, std::forward<Args>(args)...); }
+#endif
+
+    iterator insert(const_iterator pos, const value_type& x) { return v_.insert(pos, x); }
+#if TEST_STD_VER >= 11
+    iterator insert(const_iterator pos, value_type&& x)      { return v_.insert(pos, std::forward<value_type>(x)); }
+#endif
+    iterator insert(const_iterator pos, size_type n, const value_type& x) { return v_.insert(pos, n, x); }
+    template <class InputIterator>
+        iterator insert(const_iterator pos, InputIterator first, InputIterator last)
+    { return v_.insert(pos, first, last); }
+
+#if TEST_STD_VER >= 11
+    iterator insert(const_iterator pos, std::initializer_list<value_type> il) { return v_.insert(pos, il); }
+#endif
+
+    iterator erase(const_iterator pos)                        { return v_.erase(pos); }
+    iterator erase(const_iterator first, const_iterator last) { return v_.erase(first, last); }
+
+    void clear() TEST_NOEXCEPT { v_.clear(); }
+
+    void resize(size_type sz)                      { v_.resize(sz); }
+    void resize(size_type sz, const value_type& c) { v_.resize(sz, c); }
+
+    void swap(nasty_vector &nv)
+#if TEST_STD_VER > 14
+    noexcept(std::is_nothrow_swappable<nested_container>::value)
+#elif defined(_LIBCPP_VERSION)
+    TEST_NOEXCEPT_COND(std::__is_nothrow_swappable<nested_container>::value)
+#endif
+    { v_.swap(nv.v_); }
+
+    nasty_vector *operator &()             { assert(false); return nullptr; }  // nasty
+    const nasty_vector *operator &() const { assert(false); return nullptr; }  // nasty
+
+    nested_container v_;
+};
+
+template <class T>
+bool operator==(const nasty_vector<T>& x, const nasty_vector<T>& y) { return x.v_ == y.v_; }
+
+template <class T>
+class nasty_list
+{
+public:
+
+    typedef typename std::list<T>                             nested_container;
+    typedef typename nested_container::value_type             value_type;
+    typedef typename nested_container::reference              reference;
+    typedef typename nested_container::const_reference        const_reference;
+    typedef typename nested_container::iterator               iterator;
+    typedef typename nested_container::const_iterator         const_iterator;
+
+    typedef typename nested_container::size_type              size_type;
+    typedef typename nested_container::difference_type        difference_type;
+    typedef typename nested_container::pointer                pointer;
+    typedef typename nested_container::const_pointer          const_pointer;
+
+    typedef typename nested_container::reverse_iterator       reverse_iterator;
+    typedef typename nested_container::const_reverse_iterator const_reverse_iterator;
+
+    nasty_list() : l_() {}
+    explicit nasty_list(size_type n)  : l_(n) {}
+    nasty_list(size_type n, const value_type& value)  : l_(n,value) {}
+    template <class Iter>
+        nasty_list(Iter first, Iter last)  : l_(first, last) {}
+#if TEST_STD_VER >= 11
+    nasty_list(std::initializer_list<value_type> il) : l_(il) {}
+#endif
+
+    ~nasty_list() {}
+
+#if TEST_STD_VER >= 11
+    nasty_list& operator=(std::initializer_list<value_type> il) { l_ = il; return *this; }
+#endif
+    template <class Iter>
+        void assign(Iter first, Iter last) { l_.assign(first, last); }
+    void assign(size_type n, const value_type& t) { l_.assign(n, t); }
+#if TEST_STD_VER >= 11
+    void assign(std::initializer_list<value_type> il) { l_.assign(il); }
+#endif
+
+
+    iterator               begin() TEST_NOEXCEPT         { return l_.begin(); }
+    const_iterator         begin()   const TEST_NOEXCEPT { return l_.begin(); }
+    iterator               end() TEST_NOEXCEPT           { return l_.end(); }
+    const_iterator         end()     const TEST_NOEXCEPT { return l_.end(); }
+
+    reverse_iterator       rbegin() TEST_NOEXCEPT        { return l_.rbegin(); }
+    const_reverse_iterator rbegin()  const TEST_NOEXCEPT { return l_.rbegin(); }
+    reverse_iterator       rend() TEST_NOEXCEPT          { return l_.rend(); }
+    const_reverse_iterator rend()    const TEST_NOEXCEPT { return l_.rend(); }
+
+    const_iterator         cbegin()  const TEST_NOEXCEPT { return l_.cbegin(); }
+    const_iterator         cend()    const TEST_NOEXCEPT { return l_.cend(); }
+    const_reverse_iterator crbegin() const TEST_NOEXCEPT { return l_.crbegin(); }
+    const_reverse_iterator crend()   const TEST_NOEXCEPT { return l_.crend(); }
+
+    reference       front()       { return l_.front(); }
+    const_reference front() const { return l_.front(); }
+    reference       back()        { return l_.back(); }
+    const_reference back() const  { return l_.back(); }
+
+    size_type size() const TEST_NOEXCEPT      { return l_.size(); }
+    size_type max_size() const TEST_NOEXCEPT  { return l_.max_size(); }
+    bool empty() const TEST_NOEXCEPT          { return l_.empty(); }
+
+    void push_front(const value_type& x)    { l_.push_front(x); }
+    void push_back(const value_type& x)     { l_.push_back(x); }
+#if TEST_STD_VER >= 11
+    void push_back(value_type&& x)          { l_.push_back(std::forward<value_type&&>(x)); }
+    void push_front(value_type&& x)         { l_.push_front(std::forward<value_type&&>(x)); }
+    template <class... Args>
+        void emplace_back(Args&&... args)   { l_.emplace_back(std::forward<Args>(args)...); }
+    template <class... Args>
+        void emplace_front(Args&&... args)  { l_.emplace_front(std::forward<Args>(args)...); }
+#endif
+    void pop_front()                        { l_.pop_front(); }
+    void pop_back()                         { l_.pop_back(); }
+
+#if TEST_STD_VER >= 11
+    template <class... Args> iterator emplace(const_iterator pos, Args&&... args)
+    { return l_.emplace(pos, std::forward<Args>(args)...); }
+#endif
+
+    iterator insert(const_iterator pos, const value_type& x) { return l_.insert(pos, x); }
+#if TEST_STD_VER >= 11
+    iterator insert(const_iterator pos, value_type&& x)      { return l_.insert(pos, std::forward<value_type>(x)); }
+#endif
+    iterator insert(const_iterator pos, size_type n, const value_type& x) { return l_.insert(pos, n, x); }
+    template <class InputIterator>
+        iterator insert(const_iterator pos, InputIterator first, InputIterator last)
+    { return l_.insert(pos, first, last); }
+
+#if TEST_STD_VER >= 11
+    iterator insert(const_iterator pos, std::initializer_list<value_type> il) { return l_.insert(pos, il); }
+#endif
+
+    iterator erase(const_iterator pos)                      { return l_.erase(pos); }
+    iterator erase(const_iterator first, const_iterator last) { return l_.erase(first, last); }
+
+    void resize(size_type n)                      { l_.resize(n); }
+    void resize(size_type n, const value_type& c) { l_.resize(n, c); }
+
+    void swap(nasty_list &nl)
+#if TEST_STD_VER > 14
+    noexcept(std::is_nothrow_swappable<nested_container>::value)
+#elif defined(_LIBCPP_VERSION)
+    TEST_NOEXCEPT_COND(std::__is_nothrow_swappable<nested_container>::value)
+#endif
+    { l_.swap(nl.l_); }
+
+    void clear() TEST_NOEXCEPT { l_.clear(); }
+
+//     void splice(const_iterator position, list& x);
+//     void splice(const_iterator position, list&& x);
+//     void splice(const_iterator position, list& x, const_iterator i);
+//     void splice(const_iterator position, list&& x, const_iterator i);
+//     void splice(const_iterator position, list& x, const_iterator first,
+//                                                   const_iterator last);
+//     void splice(const_iterator position, list&& x, const_iterator first,
+//                                                   const_iterator last);
+//
+//     void remove(const value_type& value);
+//     template <class Pred> void remove_if(Pred pred);
+//     void unique();
+//     template <class BinaryPredicate>
+//         void unique(BinaryPredicate binary_pred);
+//     void merge(list& x);
+//     void merge(list&& x);
+//     template <class Compare>
+//         void merge(list& x, Compare comp);
+//     template <class Compare>
+//         void merge(list&& x, Compare comp);
+//     void sort();
+//     template <class Compare>
+//         void sort(Compare comp);
+//     void reverse() noexcept;
+
+    nasty_list *operator &()             { assert(false); return nullptr; }  // nasty
+    const nasty_list *operator &() const { assert(false); return nullptr; }  // nasty
+
+    nested_container l_;
+};
+
+template <class T>
+bool operator==(const nasty_list<T>& x, const nasty_list<T>& y) { return x.l_ == y.l_; }
+
+// Not really a mutex, but can play one in tests
+class nasty_mutex
+{
+public:
+     nasty_mutex() TEST_NOEXCEPT {}
+     ~nasty_mutex() {}
+
+    nasty_mutex *operator& ()   { assert(false); return nullptr; }
+    template <typename T>
+    void operator, (const T &) { assert(false); }
+
+private:
+    nasty_mutex(const nasty_mutex&)            { assert(false); }
+    nasty_mutex& operator=(const nasty_mutex&) { assert(false); return *this; }
+
+public:
+    void lock()               {}
+    bool try_lock() TEST_NOEXCEPT { return true; }
+    void unlock() TEST_NOEXCEPT   {}
+
+    // Shared ownership
+    void lock_shared()     {}
+    bool try_lock_shared() { return true; }
+    void unlock_shared()   {}
+};
+
+#endif
diff --git a/app/src/main/cpp/libcxx/test/support/operator_hijacker.h b/app/src/main/cpp/libcxx/test/support/operator_hijacker.h
new file mode 100644
index 0000000..34be330
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/operator_hijacker.h
@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_OPERATOR_HIJACKER_H
+#define SUPPORT_OPERATOR_HIJACKER_H
+
+#include <cstddef>
+#include <functional>
+
+#include "test_macros.h"
+
+/// Helper struct to test ADL-hijacking in containers.
+///
+/// The class has some additional operations to be usable in all containers.
+struct operator_hijacker {
+  bool operator<(const operator_hijacker&) const { return true; }
+  bool operator==(const operator_hijacker&) const { return true; }
+
+  template <typename T>
+  friend void operator&(T&&) = delete;
+  template <class T, class U>
+  friend void operator,(T&&, U&&) = delete;
+  template <class T, class U>
+  friend void operator&&(T&&, U&&) = delete;
+  template <class T, class U>
+  friend void operator||(T&&, U&&) = delete;
+};
+
+template <>
+struct std::hash<operator_hijacker> {
+  size_t operator()(const operator_hijacker&) const { return 0; }
+};
+
+#endif // SUPPORT_OPERATOR_HIJACKER_H
diff --git a/app/src/main/cpp/libcxx/test/support/parse_integer.h b/app/src/main/cpp/libcxx/test/support/parse_integer.h
new file mode 100644
index 0000000..c4fa429
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/parse_integer.h
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_SUPPORT_PARSE_INTEGER_H
+#define LIBCPP_TEST_SUPPORT_PARSE_INTEGER_H
+
+#include <string>
+
+namespace detail {
+template <class T>
+struct parse_integer_impl;
+
+template <>
+struct parse_integer_impl<int> {
+    template <class CharT>
+    int operator()(std::basic_string<CharT> const& str) const {
+        return std::stoi(str);
+    }
+};
+
+template <>
+struct parse_integer_impl<long> {
+    template <class CharT>
+    long operator()(std::basic_string<CharT> const& str) const {
+        return std::stol(str);
+    }
+};
+
+template <>
+struct parse_integer_impl<long long> {
+    template <class CharT>
+    long long operator()(std::basic_string<CharT> const& str) const {
+        return std::stoll(str);
+    }
+};
+
+template <>
+struct parse_integer_impl<unsigned int> {
+    template <class CharT>
+    unsigned int operator()(std::basic_string<CharT> const& str) const {
+        return std::stoul(str);
+    }
+};
+
+template <>
+struct parse_integer_impl<unsigned long> {
+    template <class CharT>
+    unsigned long operator()(std::basic_string<CharT> const& str) const {
+        return std::stoul(str);
+    }
+};
+
+template <>
+struct parse_integer_impl<unsigned long long> {
+    template <class CharT>
+    unsigned long long operator()(std::basic_string<CharT> const& str) const {
+        return std::stoull(str);
+    }
+};
+} // end namespace detail
+
+template <class T, class CharT>
+T parse_integer(std::basic_string<CharT> const& str) {
+    return detail::parse_integer_impl<T>()(str);
+}
+
+#endif // LIBCPP_TEST_SUPPORT_PARSE_INTEGER_H
diff --git a/app/src/main/cpp/libcxx/test/support/platform_support.h b/app/src/main/cpp/libcxx/test/support/platform_support.h
new file mode 100644
index 0000000..88ddf84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/platform_support.h
@@ -0,0 +1,100 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Define a bunch of macros that can be used in the tests instead of
+//  implementation defined assumptions:
+//   - locale names
+//   - floating point number string output
+
+#ifndef PLATFORM_SUPPORT_H
+#define PLATFORM_SUPPORT_H
+
+#include "test_macros.h"
+
+// locale names
+#define LOCALE_en_US_UTF_8     "en_US.UTF-8"
+#define LOCALE_fr_FR_UTF_8     "fr_FR.UTF-8"
+#ifdef __linux__
+#    define LOCALE_fr_CA_ISO8859_1 "fr_CA.ISO-8859-1"
+#    define LOCALE_cs_CZ_ISO8859_2 "cs_CZ.ISO-8859-2"
+#elif defined(_WIN32)
+#    define LOCALE_fr_CA_ISO8859_1 "fr-CA"
+#    define LOCALE_cs_CZ_ISO8859_2 "cs-CZ"
+#else
+#    define LOCALE_fr_CA_ISO8859_1 "fr_CA.ISO8859-1"
+#    define LOCALE_cs_CZ_ISO8859_2 "cs_CZ.ISO8859-2"
+#endif
+#define LOCALE_ja_JP_UTF_8     "ja_JP.UTF-8"
+#define LOCALE_ru_RU_UTF_8     "ru_RU.UTF-8"
+#define LOCALE_zh_CN_UTF_8     "zh_CN.UTF-8"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string>
+#if defined(_WIN32)
+#   include <io.h> // _mktemp_s
+#   include <fcntl.h> // _O_EXCL, ...
+#   include <sys/stat.h> // _S_IREAD, ...
+#else
+#   include <unistd.h> // close
+#endif
+
+#if defined(_CS_GNU_LIBC_VERSION)
+# include <string.h> // strverscmp
+#endif
+
+#if defined(_NEWLIB_VERSION) && defined(__STRICT_ANSI__)
+// Newlib provides this, but in the header it's under __STRICT_ANSI__
+extern "C" {
+  int mkstemp(char*);
+}
+#endif
+
+inline
+std::string get_temp_file_name()
+{
+#if defined(_WIN32)
+    while (true) {
+        char Name[] = "libcxx.XXXXXX";
+        if (_mktemp_s(Name, sizeof(Name)) != 0) abort();
+        int fd = _open(Name, _O_RDWR | _O_CREAT | _O_EXCL, _S_IREAD | _S_IWRITE);
+        if (fd != -1) {
+            _close(fd);
+            return Name;
+        }
+        if (errno == EEXIST)
+            continue;
+        abort();
+    }
+#else
+    std::string Name = "libcxx.XXXXXX";
+    int FD = mkstemp(&Name[0]);
+    if (FD == -1) {
+        perror("mkstemp");
+        abort();
+    }
+    close(FD);
+    return Name;
+#endif
+}
+
+#if defined(_CS_GNU_LIBC_VERSION)
+inline bool glibc_version_less_than(char const* version) {
+  std::string test_version = std::string("glibc ") + version;
+
+  size_t n = confstr(_CS_GNU_LIBC_VERSION, nullptr, (size_t)0);
+  char *current_version = new char[n];
+  confstr(_CS_GNU_LIBC_VERSION, current_version, n);
+
+  bool result = strverscmp(current_version, test_version.c_str()) < 0;
+  delete[] current_version;
+  return result;
+}
+#endif // _CS_GNU_LIBC_VERSION
+
+#endif // PLATFORM_SUPPORT_H
diff --git a/app/src/main/cpp/libcxx/test/support/pointer_comparison_test_helper.h b/app/src/main/cpp/libcxx/test/support/pointer_comparison_test_helper.h
new file mode 100644
index 0000000..716366a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/pointer_comparison_test_helper.h
@@ -0,0 +1,62 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef POINTER_COMPARISON_TEST_HELPER_H
+#define POINTER_COMPARISON_TEST_HELPER_H
+
+#include <cstdint>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <template <class> class CompareTemplate>
+void do_pointer_comparison_test() {
+  typedef CompareTemplate<int*> Compare;
+  typedef CompareTemplate<std::uintptr_t> UIntCompare;
+#if TEST_STD_VER > 11
+  typedef CompareTemplate<void> VoidCompare;
+#else
+  typedef Compare VoidCompare;
+#endif
+
+  Compare comp;
+  UIntCompare ucomp;
+  VoidCompare vcomp;
+  struct {
+    int a, b;
+  } local;
+  int* pointers[] = {&local.a, &local.b, nullptr, &local.a + 1};
+  for (int* lhs : pointers) {
+    for (int* rhs : pointers) {
+      std::uintptr_t lhs_uint = reinterpret_cast<std::uintptr_t>(lhs);
+      std::uintptr_t rhs_uint = reinterpret_cast<std::uintptr_t>(rhs);
+      assert(comp(lhs, rhs) == ucomp(lhs_uint, rhs_uint));
+      assert(vcomp(lhs, rhs) == ucomp(lhs_uint, rhs_uint));
+    }
+  }
+}
+
+template <class Comp>
+void do_pointer_comparison_test(Comp comp) {
+  struct {
+    int a, b;
+  } local;
+  int* pointers[] = {&local.a, &local.b, nullptr, &local.a + 1};
+  for (int* lhs : pointers) {
+    for (int* rhs : pointers) {
+      std::uintptr_t lhs_uint = reinterpret_cast<std::uintptr_t>(lhs);
+      std::uintptr_t rhs_uint = reinterpret_cast<std::uintptr_t>(rhs);
+      void*          lhs_void = static_cast<void*>(lhs);
+      void*          rhs_void = static_cast<void*>(rhs);
+      assert(comp(lhs, rhs) == comp(lhs_uint, rhs_uint));
+      assert(comp(lhs_void, rhs_void) == comp(lhs_uint, rhs_uint));
+    }
+  }
+}
+
+#endif // POINTER_COMPARISON_TEST_HELPER_H
diff --git a/app/src/main/cpp/libcxx/test/support/poisoned_hash_helper.h b/app/src/main/cpp/libcxx/test/support/poisoned_hash_helper.h
new file mode 100644
index 0000000..d37f3b3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/poisoned_hash_helper.h
@@ -0,0 +1,244 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_POISONED_HASH_HELPER_H
+#define SUPPORT_POISONED_HASH_HELPER_H
+
+#include <cassert>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+
+#if TEST_STD_VER < 11
+#error this header may only be used in C++11 or newer
+#endif
+
+template <class ...Args> struct TypeList;
+
+// Test that the specified Hash meets the requirements of an enabled hash
+template <class Hash, class Key, class InputKey = Key>
+TEST_CONSTEXPR_CXX20 void test_hash_enabled(InputKey const& key = InputKey{});
+
+template <class T, class InputKey = T>
+TEST_CONSTEXPR_CXX20 void test_hash_enabled_for_type(InputKey const& key = InputKey{}) {
+  return test_hash_enabled<std::hash<T>, T, InputKey>(key);
+}
+
+// Test that the specified Hash meets the requirements of a disabled hash.
+template <class Hash, class Key>
+void test_hash_disabled();
+
+template <class T>
+void test_hash_disabled_for_type() {
+  return test_hash_disabled<std::hash<T>, T>();
+}
+
+namespace PoisonedHashDetail {
+  enum Enum {};
+  enum EnumClass : bool {};
+  struct Class {};
+}
+
+// Each header that declares the template hash provides enabled
+// specializations of hash for nullptr t and all cv-unqualified
+// arithmetic, enumeration, and pointer types.
+using LibraryHashTypes = TypeList<
+#if TEST_STD_VER > 14
+      decltype(nullptr),
+#endif
+      bool,
+      char,
+      signed char,
+      unsigned char,
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+      wchar_t,
+#endif
+      char16_t,
+      char32_t,
+      short,
+      unsigned short,
+      int,
+      unsigned int,
+      long,
+      unsigned long,
+      long long,
+      unsigned long long,
+#ifndef TEST_HAS_NO_INT128
+      __int128_t,
+      __uint128_t,
+#endif
+      float,
+      double,
+      long double,
+      PoisonedHashDetail::Enum,
+      PoisonedHashDetail::EnumClass,
+      void*,
+      void const*,
+      PoisonedHashDetail::Class*
+    >;
+
+
+// Test that each of the library hash specializations for  arithmetic types,
+// enum types, and pointer types are available and enabled.
+template <class Types = LibraryHashTypes>
+void test_library_hash_specializations_available(Types = Types{});
+
+
+namespace PoisonedHashDetail {
+
+template <class T, class = typename T::foo_bar_baz>
+constexpr bool instantiate(int) { return true; }
+template <class> constexpr bool instantiate(long) { return true; }
+template <class T> constexpr bool instantiate() { return instantiate<T>(0); }
+
+template <class To>
+struct ConvertibleToSimple {
+  operator To() const {
+    return To{};
+  }
+};
+
+template <class To>
+struct ConvertibleTo {
+  To to{};
+  operator To&() & { return to; }
+  operator To const&() const & { return to; }
+  operator To&&() && { return std::move(to); }
+  operator To const&&() const && { return std::move(to); }
+};
+
+template <class Hasher, class Key, class Res = decltype(std::declval<Hasher&>()(std::declval<Key>()))>
+constexpr bool can_hash(int) {
+  return std::is_same<Res, size_t>::value;
+}
+template <class, class>
+constexpr bool can_hash(long) {
+  return false;
+}
+template <class Hasher, class Key>
+constexpr bool can_hash() {
+  return can_hash<Hasher, Key>(0);
+}
+} // namespace PoisonedHashDetail
+
+template <class Hash, class Key, class InputKey>
+TEST_CONSTEXPR_CXX20 void test_hash_enabled(InputKey const& key) {
+  using namespace PoisonedHashDetail;
+
+  static_assert(std::is_destructible<Hash>::value, "");
+  // Enabled hash requirements
+  static_assert(std::is_default_constructible<Hash>::value, "");
+  static_assert(std::is_copy_constructible<Hash>::value, "");
+  static_assert(std::is_move_constructible<Hash>::value, "");
+  static_assert(std::is_copy_assignable<Hash>::value, "");
+  static_assert(std::is_move_assignable<Hash>::value, "");
+
+#if TEST_STD_VER > 14
+  static_assert(std::is_swappable<Hash>::value, "");
+#elif defined(_LIBCPP_VERSION)
+  static_assert(std::__is_swappable<Hash>::value, "");
+#endif
+
+  // Hashable requirements
+  static_assert(can_hash<Hash, Key&>(), "");
+  static_assert(can_hash<Hash, Key const&>(), "");
+  static_assert(can_hash<Hash, Key&&>(), "");
+  static_assert(can_hash<Hash const, Key&>(), "");
+  static_assert(can_hash<Hash const, Key const&>(), "");
+  static_assert(can_hash<Hash const, Key&&>(), "");
+
+  static_assert(can_hash<Hash, ConvertibleToSimple<Key>&>(), "");
+  static_assert(can_hash<Hash, ConvertibleToSimple<Key> const&>(), "");
+  static_assert(can_hash<Hash, ConvertibleToSimple<Key>&&>(), "");
+
+  static_assert(can_hash<Hash, ConvertibleTo<Key>&>(), "");
+  static_assert(can_hash<Hash, ConvertibleTo<Key> const&>(), "");
+  static_assert(can_hash<Hash, ConvertibleTo<Key>&&>(), "");
+  static_assert(can_hash<Hash, ConvertibleTo<Key> const&&>(), "");
+
+  const Hash h{};
+  assert(h(key) == h(key));
+
+}
+
+template <class Hash, class Key>
+void test_hash_disabled() {
+  using namespace PoisonedHashDetail;
+
+  // Disabled hash requirements
+  static_assert(!std::is_default_constructible<Hash>::value, "");
+  static_assert(!std::is_copy_constructible<Hash>::value, "");
+  static_assert(!std::is_move_constructible<Hash>::value, "");
+  static_assert(!std::is_copy_assignable<Hash>::value, "");
+  static_assert(!std::is_move_assignable<Hash>::value, "");
+
+  static_assert(!std::is_function<
+      typename std::remove_pointer<
+          typename std::remove_reference<Hash>::type
+      >::type
+    >::value, "");
+
+  // Hashable requirements
+  static_assert(!can_hash<Hash, Key&>(), "");
+  static_assert(!can_hash<Hash, Key const&>(), "");
+  static_assert(!can_hash<Hash, Key&&>(), "");
+  static_assert(!can_hash<Hash const, Key&>(), "");
+  static_assert(!can_hash<Hash const, Key const&>(), "");
+  static_assert(!can_hash<Hash const, Key&&>(), "");
+
+  static_assert(!can_hash<Hash, ConvertibleToSimple<Key>&>(), "");
+  static_assert(!can_hash<Hash, ConvertibleToSimple<Key> const&>(), "");
+  static_assert(!can_hash<Hash, ConvertibleToSimple<Key>&&>(), "");
+
+  static_assert(!can_hash<Hash, ConvertibleTo<Key>&>(), "");
+  static_assert(!can_hash<Hash, ConvertibleTo<Key> const&>(), "");
+  static_assert(!can_hash<Hash, ConvertibleTo<Key>&&>(), "");
+  static_assert(!can_hash<Hash, ConvertibleTo<Key> const&&>(), "");
+}
+
+
+template <class First, class ...Rest>
+struct TypeList<First, Rest...> {
+  template <template <class> class Trait, bool Expect = true>
+  static constexpr bool assertTrait() {
+    static_assert(Trait<First>::value == Expect, "");
+    return TypeList<Rest...>::template assertTrait<Trait, Expect>();
+  }
+
+  template <class Trait>
+  static void applyTrait() {
+    Trait::template apply<First>();
+    TypeList<Rest...>::template applyTrait<Trait>();
+  }
+};
+
+template <>
+struct TypeList<> {
+  template <template <class> class Trait, bool Expect = true>
+  static constexpr bool assertTrait() {
+    return true;
+  }
+  template <class Trait>
+  static void applyTrait() {}
+};
+
+
+struct TestLibraryTrait {
+    template <class Type>
+    static void apply() { test_hash_enabled<std::hash<Type>, Type>(); }
+};
+
+template <class Types>
+void test_library_hash_specializations_available(Types) {
+  Types::template applyTrait<TestLibraryTrait >();
+}
+
+#endif // SUPPORT_POISONED_HASH_HELPER_H
diff --git a/app/src/main/cpp/libcxx/test/support/private_constructor.h b/app/src/main/cpp/libcxx/test/support/private_constructor.h
new file mode 100644
index 0000000..24f540c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/private_constructor.h
@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_PRIVATE_CONSTRUCTOR_H
+#define TEST_SUPPORT_PRIVATE_CONSTRUCTOR_H
+
+struct PrivateConstructor {
+
+    PrivateConstructor static make ( int v ) { return PrivateConstructor(v); }
+    int get () const { return val; }
+private:
+    PrivateConstructor ( int v ) : val(v) {}
+    int val;
+    };
+
+bool operator < ( const PrivateConstructor &lhs, const PrivateConstructor &rhs ) { return lhs.get() < rhs.get(); }
+
+bool operator < ( const PrivateConstructor &lhs, int rhs ) { return lhs.get() < rhs; }
+bool operator < ( int lhs, const PrivateConstructor &rhs ) { return lhs < rhs.get(); }
+
+#endif // TEST_SUPPORT_PRIVATE_CONSTRUCTOR_H
diff --git a/app/src/main/cpp/libcxx/test/support/propagate_const_helpers.h b/app/src/main/cpp/libcxx/test/support/propagate_const_helpers.h
new file mode 100644
index 0000000..a9df1b9
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/propagate_const_helpers.h
@@ -0,0 +1,118 @@
+ // A lightweight class, with pointer-like methods, that contains an int
+struct X
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+
+    constexpr X(int i) : i_(i) {}
+};
+
+struct XWithImplicitIntStarConversion
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+    constexpr operator int* () { return &i_; }
+
+    constexpr XWithImplicitIntStarConversion(int i) : i_(i) {}
+};
+
+struct XWithImplicitConstIntStarConversion
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+    constexpr operator const int* () const { return &i_; }
+
+    constexpr XWithImplicitConstIntStarConversion(int i) : i_(i) {}
+};
+
+struct ExplicitX
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+
+    constexpr explicit ExplicitX(int i) : i_(i) {}
+};
+
+struct MoveConstructibleFromX
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+
+    constexpr MoveConstructibleFromX(int i) : i_(i) {}
+    constexpr MoveConstructibleFromX(X&& x) : i_(x.i_) {}
+};
+
+struct ExplicitMoveConstructibleFromX
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+
+    constexpr ExplicitMoveConstructibleFromX(int i) : i_(i) {}
+    constexpr explicit ExplicitMoveConstructibleFromX(X&& x) : i_(x.i_) {}
+};
+
+struct CopyConstructibleFromX
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+
+    constexpr CopyConstructibleFromX(int i) : i_(i) {}
+    constexpr CopyConstructibleFromX(const X& x) : i_(x.i_) {}
+};
+
+struct ExplicitCopyConstructibleFromX
+{
+    int i_;
+
+    constexpr const int &operator*() const { return i_; }
+    constexpr int &operator*() { return i_; }
+    constexpr const int *get() const { return &i_; }
+    constexpr int *get() { return &i_; }
+    constexpr const int *operator->() const { return &i_; }
+    constexpr int *operator->() { return &i_; }
+
+    constexpr ExplicitCopyConstructibleFromX(int i) : i_(i) {}
+    constexpr explicit ExplicitCopyConstructibleFromX(const X& x) : i_(x.i_) {}
+};
diff --git a/app/src/main/cpp/libcxx/test/support/propagate_value_category.hpp b/app/src/main/cpp/libcxx/test/support/propagate_value_category.hpp
new file mode 100644
index 0000000..02a035d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/propagate_value_category.hpp
@@ -0,0 +1,153 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_PROPAGATE_VALUE_CATEGORY
+#define TEST_SUPPORT_PROPAGATE_VALUE_CATEGORY
+
+#include "test_macros.h"
+#include <type_traits>
+
+#if TEST_STD_VER < 11
+#error this header may only be used in C++11
+#endif
+
+using UnderlyingVCType = unsigned;
+enum ValueCategory : UnderlyingVCType {
+  VC_None = 0,
+  VC_LVal = 1 << 0,
+  VC_RVal = 1 << 1,
+  VC_Const = 1 << 2,
+  VC_Volatile = 1 << 3,
+  VC_ConstVolatile = VC_Const | VC_Volatile
+};
+
+inline constexpr ValueCategory operator&(ValueCategory LHS, ValueCategory RHS) {
+  return ValueCategory(LHS & (UnderlyingVCType)RHS);
+}
+
+inline constexpr ValueCategory operator|(ValueCategory LHS, ValueCategory RHS) {
+  return ValueCategory(LHS | (UnderlyingVCType)RHS);
+}
+
+inline constexpr ValueCategory operator^(ValueCategory LHS, ValueCategory RHS) {
+  return ValueCategory(LHS ^ (UnderlyingVCType)RHS);
+}
+
+inline constexpr bool isValidValueCategory(ValueCategory VC) {
+  return (VC & (VC_LVal | VC_RVal)) != (VC_LVal | VC_RVal);
+}
+
+inline constexpr bool hasValueCategory(ValueCategory Arg, ValueCategory Key) {
+  return Arg == Key || ((Arg & Key) == Key);
+}
+
+template <class Tp>
+using UnCVRef =
+    typename std::remove_cv<typename std::remove_reference<Tp>::type>::type;
+
+template <class Tp>
+constexpr ValueCategory getReferenceQuals() {
+  return std::is_lvalue_reference<Tp>::value
+             ? VC_LVal
+             : (std::is_rvalue_reference<Tp>::value ? VC_RVal : VC_None);
+}
+static_assert(getReferenceQuals<int>() == VC_None, "");
+static_assert(getReferenceQuals<int &>() == VC_LVal, "");
+static_assert(getReferenceQuals<int &&>() == VC_RVal, "");
+
+template <class Tp>
+constexpr ValueCategory getCVQuals() {
+  using Vp = typename std::remove_reference<Tp>::type;
+  return std::is_const<Vp>::value && std::is_volatile<Vp>::value
+             ? VC_ConstVolatile
+             : (std::is_const<Vp>::value
+                    ? VC_Const
+                    : (std::is_volatile<Vp>::value ? VC_Volatile : VC_None));
+}
+static_assert(getCVQuals<int>() == VC_None, "");
+static_assert(getCVQuals<int const>() == VC_Const, "");
+static_assert(getCVQuals<int volatile>() == VC_Volatile, "");
+static_assert(getCVQuals<int const volatile>() == VC_ConstVolatile, "");
+static_assert(getCVQuals<int &>() == VC_None, "");
+static_assert(getCVQuals<int const &>() == VC_Const, "");
+
+template <class Tp>
+inline constexpr ValueCategory getValueCategory() {
+  return getReferenceQuals<Tp>() | getCVQuals<Tp>();
+}
+static_assert(getValueCategory<int>() == VC_None, "");
+static_assert(getValueCategory<int const &>() == (VC_LVal | VC_Const), "");
+static_assert(getValueCategory<int const volatile &&>() ==
+                  (VC_RVal | VC_ConstVolatile),
+              "");
+
+template <ValueCategory VC>
+struct ApplyValueCategory {
+private:
+  static_assert(isValidValueCategory(VC), "");
+
+  template <bool Pred, class Then, class Else>
+  using CondT = typename std::conditional<Pred, Then, Else>::type;
+
+public:
+  template <class Tp, class Vp = UnCVRef<Tp>>
+  using ApplyCVQuals = CondT<
+      hasValueCategory(VC, VC_ConstVolatile), typename std::add_cv<Vp>::type,
+      CondT<hasValueCategory(VC, VC_Const), typename std::add_const<Vp>::type,
+            CondT<hasValueCategory(VC, VC_Volatile),
+                  typename std::add_volatile<Vp>::type, Tp>>>;
+
+  template <class Tp, class Vp = typename std::remove_reference<Tp>::type>
+  using ApplyReferenceQuals =
+      CondT<hasValueCategory(VC, VC_LVal),
+            typename std::add_lvalue_reference<Vp>::type,
+            CondT<hasValueCategory(VC, VC_RVal),
+                  typename std::add_rvalue_reference<Vp>::type, Vp>>;
+
+  template <class Tp>
+  using Apply = ApplyReferenceQuals<ApplyCVQuals<UnCVRef<Tp>>>;
+
+  template <class Tp, bool Dummy = true,
+            typename std::enable_if<Dummy && (VC & VC_LVal), bool>::type = true>
+  static Apply<UnCVRef<Tp>> cast(Tp &&t) {
+    using ToType = Apply<UnCVRef<Tp>>;
+    return static_cast<ToType>(t);
+  }
+
+  template <class Tp, bool Dummy = true,
+            typename std::enable_if<Dummy && (VC & VC_RVal), bool>::type = true>
+  static Apply<UnCVRef<Tp>> cast(Tp &&t) {
+    using ToType = Apply<UnCVRef<Tp>>;
+    return static_cast<ToType>(std::move(t));
+  }
+
+  template <
+      class Tp, bool Dummy = true,
+      typename std::enable_if<Dummy && ((VC & (VC_LVal | VC_RVal)) == VC_None),
+                              bool>::type = true>
+  static Apply<UnCVRef<Tp>> cast(Tp &&t) {
+    return t;
+  }
+};
+
+template <ValueCategory VC, class Tp>
+using ApplyValueCategoryT = typename ApplyValueCategory<VC>::template Apply<Tp>;
+
+template <class Tp>
+using PropagateValueCategory = ApplyValueCategory<getValueCategory<Tp>()>;
+
+template <class Tp, class Up>
+using PropagateValueCategoryT =
+    typename ApplyValueCategory<getValueCategory<Tp>()>::template Apply<Up>;
+
+template <ValueCategory VC, class Tp>
+typename ApplyValueCategory<VC>::template Apply<Tp> ValueCategoryCast(Tp &&t) {
+  return ApplyValueCategory<VC>::cast(std::forward<Tp>(t));
+};
+
+#endif // TEST_SUPPORT_PROPAGATE_VALUE_CATEGORY
diff --git a/app/src/main/cpp/libcxx/test/support/rapid-cxx-test.h b/app/src/main/cpp/libcxx/test/support/rapid-cxx-test.h
new file mode 100644
index 0000000..0f3dcd8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/rapid-cxx-test.h
@@ -0,0 +1,866 @@
+#ifndef RAPID_CXX_TEST_H
+#define RAPID_CXX_TEST_H
+
+# include <cstddef>
+# include <cstdlib>
+# include <cstdio>
+# include <cstring>
+# include <cassert>
+
+#include "test_macros.h"
+
+#if !defined(RAPID_CXX_TEST_NO_SYSTEM_HEADER) || !defined(__GNUC__)
+#pragma GCC system_header
+#endif
+
+# define RAPID_CXX_TEST_PP_CAT(x, y) RAPID_CXX_TEST_PP_CAT_2(x, y)
+# define RAPID_CXX_TEST_PP_CAT_2(x, y) x##y
+
+# define RAPID_CXX_TEST_PP_STR(...) RAPID_CXX_TEST_PP_STR_2(__VA_ARGS__)
+# define RAPID_CXX_TEST_PP_STR_2(...) #__VA_ARGS__
+
+# if defined(__GNUC__)
+#   define TEST_FUNC_NAME() __PRETTY_FUNCTION__
+#   define RAPID_CXX_TEST_UNUSED __attribute__((unused))
+# else
+#   define TEST_FUNC_NAME() __func__
+#   define RAPID_CXX_TEST_UNUSED
+# endif
+
+////////////////////////////////////////////////////////////////////////////////
+//                          TEST_SUITE
+////////////////////////////////////////////////////////////////////////////////
+# define TEST_SUITE(Name)                                           \
+namespace Name                                                      \
+{                                                                   \
+    inline ::rapid_cxx_test::test_suite & get_test_suite()          \
+    {                                                               \
+        static ::rapid_cxx_test::test_suite m_suite(#Name);         \
+        return m_suite;                                             \
+    }                                                               \
+                                                                    \
+    inline int unit_test_main(int, char**)                          \
+    {                                                               \
+        ::rapid_cxx_test::test_runner runner(get_test_suite());     \
+        return runner.run();                                        \
+    }                                                               \
+}                                                                   \
+int main(int argc, char **argv)                                     \
+{                                                                   \
+    return Name::unit_test_main(argc, argv);                        \
+}                                                                   \
+namespace Name                                                      \
+{ /* namespace closed in TEST_SUITE_END */
+#
+
+////////////////////////////////////////////////////////////////////////////////
+//                         TEST_SUITE_END
+////////////////////////////////////////////////////////////////////////////////
+# define TEST_SUITE_END()                                       \
+} /* namespace opened in TEST_SUITE(...) */
+#
+
+////////////////////////////////////////////////////////////////////////////////
+//                          TEST_CASE
+////////////////////////////////////////////////////////////////////////////////
+
+# if !defined(__clang__)
+#
+# define TEST_CASE(Name)                                                                                \
+    void Name();                                                                                        \
+    static void RAPID_CXX_TEST_PP_CAT(Name, _invoker)()                                                 \
+    {                                                                                                   \
+        Name();                                                                                         \
+    }                                                                                                   \
+    static ::rapid_cxx_test::registrar                                                                  \
+    RAPID_CXX_TEST_PP_CAT(rapid_cxx_test_registrar_, Name)(                                         \
+        get_test_suite()                                                                                \
+      , ::rapid_cxx_test::test_case(__FILE__, #Name, __LINE__, & RAPID_CXX_TEST_PP_CAT(Name, _invoker)) \
+      );                                                                                                \
+    void Name()
+#
+# else /* __clang__ */
+#
+# define TEST_CASE(Name)                                                                                \
+    void Name();                                                                                        \
+    static void RAPID_CXX_TEST_PP_CAT(Name, _invoker)()                                                 \
+    {                                                                                                   \
+        Name();                                                                                         \
+    }                                                                                                   \
+    _Pragma("clang diagnostic push")                                                                    \
+    _Pragma("clang diagnostic ignored \"-Wglobal-constructors\"")                                       \
+    static ::rapid_cxx_test::registrar                                                                  \
+    RAPID_CXX_TEST_PP_CAT(rapid_cxx_test_registrar_, Name)(                                         \
+        get_test_suite()                                                                                \
+      , ::rapid_cxx_test::test_case(__FILE__, #Name, __LINE__, & RAPID_CXX_TEST_PP_CAT(Name, _invoker)) \
+      );                                                                                                \
+    _Pragma("clang diagnostic pop")                                                                     \
+    void Name()
+#
+# endif /* !defined(__clang__) */
+
+
+# define TEST_SET_CHECKPOINT() ::rapid_cxx_test::set_checkpoint(__FILE__, TEST_FUNC_NAME(), __LINE__)
+
+#define RAPID_CXX_TEST_OUTCOME()
+
+////////////////////////////////////////////////////////////////////////////////
+//                              TEST_UNSUPPORTED
+////////////////////////////////////////////////////////////////////////////////
+# define TEST_UNSUPPORTED()                                                                 \
+    do {                                                                                    \
+        TEST_SET_CHECKPOINT();                                                              \
+        ::rapid_cxx_test::test_outcome m_f(                                                 \
+          ::rapid_cxx_test::failure_type::unsupported, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+          , "", ""                                                                          \
+        );                                                                                  \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                       \
+        return;                                                                             \
+    } while (false)
+#
+
+
+////////////////////////////////////////////////////////////////////////////////
+//                            BASIC ASSERTIONS
+////////////////////////////////////////////////////////////////////////////////
+# define TEST_WARN(...)                                                                \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_WARN(" #__VA_ARGS__ ")", ""                                        \
+            );                                                                         \
+        if (not (__VA_ARGS__)) {                                                       \
+            m_f.type = ::rapid_cxx_test::failure_type::warn;                           \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+# define TEST_CHECK(...)                                                               \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_CHECK(" #__VA_ARGS__ ")", ""                                       \
+            );                                                                         \
+        if (not (__VA_ARGS__)) {                                                       \
+            m_f.type = ::rapid_cxx_test::failure_type::check;                          \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+# define TEST_REQUIRE(...)                                                             \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_REQUIRE(" #__VA_ARGS__ ")", ""                                     \
+            );                                                                         \
+        if (not (__VA_ARGS__)) {                                                       \
+            m_f.type = ::rapid_cxx_test::failure_type::require;                        \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            return;                                                                    \
+        }                                                                              \
+    } while (false)
+#
+
+# define TEST_ASSERT(...)                                                              \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_ASSERT(" #__VA_ARGS__ ")", ""                                      \
+            );                                                                         \
+        if (not (__VA_ARGS__)) {                                                       \
+            m_f.type = ::rapid_cxx_test::failure_type::assert;                         \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            std::abort();                                                              \
+        }                                                                              \
+    } while (false)
+#
+
+////////////////////////////////////////////////////////////////////////////////
+//                    TEST_CHECK_NO_THROW / TEST_CHECK_THROW
+////////////////////////////////////////////////////////////////////////////////
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+# define TEST_CHECK_NO_THROW(...)                                                      \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_CHECK_NO_THROW(" #__VA_ARGS__ ")", ""                              \
+            );                                                                         \
+        try {                                                                          \
+            (static_cast<void>(__VA_ARGS__));                                          \
+        } catch (...) {                                                                \
+            m_f.type = ::rapid_cxx_test::failure_type::check;                          \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+# define TEST_CHECK_THROW(Except, ...)                                                 \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_CHECK_THROW(" #Except "," #__VA_ARGS__ ")", ""                     \
+            );                                                                         \
+        try {                                                                          \
+            (static_cast<void>(__VA_ARGS__));                                          \
+            m_f.type = ::rapid_cxx_test::failure_type::check;                          \
+        } catch (Except const &) {}                                                    \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+#define TEST_CHECK_THROW_RESULT(Except, Checker, ...)                          \
+  do {                                                                         \
+    TEST_SET_CHECKPOINT();                                                     \
+    ::rapid_cxx_test::test_outcome m_f(::rapid_cxx_test::failure_type::none,   \
+                                       __FILE__, TEST_FUNC_NAME(), __LINE__,   \
+                                       "TEST_CHECK_THROW_RESULT(" #Except      \
+                                       "," #Checker "," #__VA_ARGS__ ")",      \
+                                       "");                                    \
+    try {                                                                      \
+      (static_cast<void>(__VA_ARGS__));                                        \
+      m_f.type = ::rapid_cxx_test::failure_type::check;                        \
+    } catch (Except const& Caught) {                                           \
+      Checker(Caught);                                                         \
+    }                                                                          \
+    ::rapid_cxx_test::get_reporter().report(m_f);                              \
+  } while (false)
+#
+
+#else // TEST_HAS_NO_EXCEPTIONS
+
+# define TEST_CHECK_NO_THROW(...)                                                      \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_CHECK_NO_THROW(" #__VA_ARGS__ ")", ""                              \
+            );                                                                         \
+        (static_cast<void>(__VA_ARGS__));                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+#define TEST_CHECK_THROW(Except, ...) ((void)0)
+#define TEST_CHECK_THROW_RESULT(Except, Checker, ...) ((void)0)
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+
+////////////////////////////////////////////////////////////////////////////////
+//                    TEST_REQUIRE_NO_THROW / TEST_REQUIRE_THROWs
+////////////////////////////////////////////////////////////////////////////////
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+# define TEST_REQUIRE_NO_THROW(...)                                                    \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_REQUIRE_NO_THROW(" #__VA_ARGS__ ")", ""                            \
+            );                                                                         \
+        try {                                                                          \
+            (static_cast<void>(__VA_ARGS__));                                          \
+        } catch (...) {                                                                \
+            m_f.type = ::rapid_cxx_test::failure_type::require;                        \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            return;                                                                    \
+        }                                                                              \
+    } while (false)
+#
+
+# define TEST_REQUIRE_THROW(Except, ...)                                               \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_REQUIRE_THROW(" #Except "," #__VA_ARGS__ ")", ""                   \
+            );                                                                         \
+        try {                                                                          \
+            (static_cast<void>(__VA_ARGS__));                                          \
+            m_f.type = ::rapid_cxx_test::failure_type::require;                        \
+        } catch (Except const &) {}                                                    \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            return;                                                                    \
+        }                                                                              \
+    } while (false)
+#
+
+#else // TEST_HAS_NO_EXCEPTIONS
+
+# define TEST_REQUIRE_NO_THROW(...)                                                    \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_REQUIRE_NO_THROW(" #__VA_ARGS__ ")", ""                            \
+            );                                                                         \
+        (static_cast<void>(__VA_ARGS__));                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+#define TEST_REQUIRE_THROW(Except, ...) ((void)0)
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+////////////////////////////////////////////////////////////////////////////////
+//                    TEST_ASSERT_NO_THROW / TEST_ASSERT_THROW
+////////////////////////////////////////////////////////////////////////////////
+#ifndef TEST_HAS_NO_EXCEPTIONS
+
+# define TEST_ASSERT_NO_THROW(...)                                                     \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_ASSERT_NO_THROW(" #__VA_ARGS__ ")", ""                             \
+            );                                                                         \
+        try {                                                                          \
+            (static_cast<void>(__VA_ARGS__));                                          \
+        } catch (...) {                                                                \
+            m_f.type = ::rapid_cxx_test::failure_type::assert;                         \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            std::abort();                                                              \
+        }                                                                              \
+    } while (false)
+#
+
+# define TEST_ASSERT_THROW(Except, ...)                                                \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_ASSERT_THROW(" #Except "," #__VA_ARGS__ ")", ""                    \
+            );                                                                         \
+        try {                                                                          \
+            (static_cast<void>(__VA_ARGS__));                                          \
+            m_f.type = ::rapid_cxx_test::failure_type::assert;                         \
+        } catch (Except const &) {}                                                    \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            std::abort();                                                              \
+        }                                                                              \
+    } while (false)
+#
+
+#else // TEST_HAS_NO_EXCEPTIONS
+
+# define TEST_ASSERT_NO_THROW(...)                                                     \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+            ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__ \
+            , "TEST_ASSERT_NO_THROW(" #__VA_ARGS__ ")", ""                             \
+            );                                                                         \
+        (static_cast<void>(__VA_ARGS__));                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+#define TEST_ASSERT_THROW(Except, ...) ((void)0)
+
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+////////////////////////////////////////////////////////////////////////////////
+//
+////////////////////////////////////////////////////////////////////////////////
+
+# define TEST_WARN_EQUAL_COLLECTIONS(...)                                              \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+          ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__   \
+          , "TEST_WARN_EQUAL_COLLECTIONS(" #__VA_ARGS__ ")", ""                        \
+        );                                                                             \
+        if (not ::rapid_cxx_test::detail::check_equal_collections_impl(__VA_ARGS__)) { \
+            m_f.type = ::rapid_cxx_test::failure_type::warn;                           \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+# define TEST_CHECK_EQUAL_COLLECTIONS(...)                                             \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+          ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__   \
+          , "TEST_CHECK_EQUAL_COLLECTIONS(" #__VA_ARGS__ ")", ""                       \
+        );                                                                             \
+        if (not ::rapid_cxx_test::detail::check_equal_collections_impl(__VA_ARGS__)) { \
+            m_f.type = ::rapid_cxx_test::failure_type::check;                          \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+    } while (false)
+#
+
+# define TEST_REQUIRE_EQUAL_COLLECTIONS(...)                                           \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+          ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__   \
+          , "TEST_REQUIRE_EQUAL_COLLECTIONS(" #__VA_ARGS__ ")", ""                     \
+        );                                                                             \
+        if (not ::rapid_cxx_test::detail::check_equal_collections_impl(__VA_ARGS__)) { \
+            m_f.type = ::rapid_cxx_test::failure_type::require;                        \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+            return;                                                                    \
+        }                                                                              \
+    } while (false)
+#
+
+# define TEST_ASSERT_EQUAL_COLLECTIONS(...)                                            \
+    do {                                                                               \
+        TEST_SET_CHECKPOINT();                                                         \
+        ::rapid_cxx_test::test_outcome m_f(                                            \
+          ::rapid_cxx_test::failure_type::none, __FILE__, TEST_FUNC_NAME(), __LINE__   \
+          , "TEST_ASSERT_EQUAL_COLLECTIONS(" #__VA_ARGS__ ")", ""                      \
+        );                                                                             \
+        if (not ::rapid_cxx_test::detail::check_equal_collections_impl(__VA_ARGS__)) { \
+            m_f.type = ::rapid_cxx_test::failure_type::assert;                         \
+        }                                                                              \
+        ::rapid_cxx_test::get_reporter().report(m_f);                                  \
+        if (m_f.type != ::rapid_cxx_test::failure_type::none) {                        \
+          ::std::abort();                                                              \
+        }                                                                              \
+    } while (false)
+#
+
+namespace rapid_cxx_test
+{
+    typedef void (*invoker_t)();
+
+    ////////////////////////////////////////////////////////////////////////////
+    struct test_case
+    {
+        test_case()
+            : file(""), func(""), line(0), invoke(NULL)
+        {}
+
+        test_case(const char* file1, const char* func1, std::size_t line1,
+                  invoker_t invoke1)
+            : file(file1), func(func1), line(line1), invoke(invoke1)
+        {}
+
+        const char *file;
+        const char *func;
+        std::size_t line;
+        invoker_t invoke;
+    };
+
+    ////////////////////////////////////////////////////////////////////////////
+    struct failure_type
+    {
+        enum enum_type {
+            none,
+            unsupported,
+            warn,
+            check,
+            require,
+            assert,
+            uncaught_exception
+        };
+    };
+
+    typedef failure_type::enum_type failure_type_t;
+
+    ////////////////////////////////////////////////////////////////////////////
+    struct test_outcome
+    {
+        test_outcome()
+            : type(failure_type::none),
+              file(""), func(""), line(0),
+              expression(""), message("")
+        {}
+
+        test_outcome(failure_type_t type1, const char* file1, const char* func1,
+                     std::size_t line1, const char* expression1,
+                     const char* message1)
+            : type(type1), file(file1), func(func1), line(line1),
+              expression(expression1), message(message1)
+        {
+            trim_func_string();
+        }
+
+        failure_type_t type;
+        const char *file;
+        const char *func;
+        std::size_t line;
+        const char *expression;
+        const char *message;
+
+    private:
+        void trim_file_string() {
+            const char* f_start  = file;
+            const char* prev_start = f_start;
+            const char* last_start = f_start;
+            char last;
+            while ((last = *f_start) != '\0') {
+                ++f_start;
+                if (last == '/' && *f_start) {
+                    prev_start = last_start;
+                    last_start = f_start;
+                }
+            }
+            file = prev_start;
+        }
+      void trim_func_string() {
+          const char* void_loc = ::strstr(func, "void ");
+          if (void_loc == func) {
+              func += strlen("void ");
+          }
+          const char* namespace_loc = ::strstr(func, "::");
+          if (namespace_loc) {
+              func = namespace_loc + 2;
+          }
+      }
+    };
+
+    ////////////////////////////////////////////////////////////////////////////
+    struct checkpoint
+    {
+        const char *file;
+        const char *func;
+        std::size_t line;
+    };
+
+    namespace detail
+    {
+        inline checkpoint & global_checkpoint()
+        {
+            static checkpoint cp = {"", "", 0};
+            return cp;
+        }
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    inline void set_checkpoint(const char* file, const char* func, std::size_t line)
+    {
+        checkpoint& cp = detail::global_checkpoint();
+        cp.file = file;
+        cp.func = func;
+        cp.line = line;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    inline checkpoint const & get_checkpoint()
+    {
+        return detail::global_checkpoint();
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    class test_suite
+    {
+    public:
+        typedef test_case const* iterator;
+        typedef iterator const_iterator;
+
+    public:
+        test_suite(const char *xname)
+          : m_name(xname), m_tests(), m_size(0)
+        {
+            assert(xname);
+        }
+
+    public:
+        const char *name() const { return m_name; }
+
+        std::size_t size() const { return m_size; }
+
+        test_case const & operator[](std::size_t i) const
+        {
+            assert(i < m_size);
+            return m_tests[i];
+        }
+
+        const_iterator begin() const
+        { return m_tests; }
+
+        const_iterator end() const
+        {
+            return m_tests + m_size;
+        }
+
+    public:
+        std::size_t register_test(test_case tc)
+        {
+            static std::size_t test_case_max = sizeof(m_tests) / sizeof(test_case);
+            assert(m_size < test_case_max);
+            m_tests[m_size] = tc;
+            return m_size++;
+        }
+
+    private:
+        test_suite(test_suite const &);
+        test_suite & operator=(test_suite const &);
+
+    private:
+        const char* m_name;
+        // Since fast compile times in a priority, we use simple containers
+        // with hard limits.
+        test_case m_tests[256];
+        std::size_t m_size;
+    };
+
+    ////////////////////////////////////////////////////////////////////////////
+    class registrar
+    {
+    public:
+        registrar(test_suite & st, test_case tc)
+        {
+            st.register_test(tc);
+        }
+    };
+
+    ////////////////////////////////////////////////////////////////////////////
+    class test_reporter
+    {
+    public:
+        test_reporter()
+            : m_testcases(0), m_testcase_failures(0), m_unsupported(0),
+              m_assertions(0), m_warning_failures(0), m_check_failures(0),
+              m_require_failures(0), m_uncaught_exceptions(0), m_failure()
+        {
+        }
+
+        void test_case_begin()
+        {
+            ++m_testcases;
+            clear_failure();
+        }
+
+        void test_case_end()
+        {
+            if (m_failure.type != failure_type::none
+                && m_failure.type !=  failure_type::unsupported) {
+                ++m_testcase_failures;
+            }
+        }
+
+# if defined(__GNUC__)
+#   pragma GCC diagnostic push
+#   pragma GCC diagnostic ignored "-Wswitch-default"
+# endif
+        // Each assertion and failure is reported through this function.
+        void report(test_outcome o)
+        {
+            ++m_assertions;
+            switch (o.type)
+            {
+            case failure_type::none:
+                break;
+            case failure_type::unsupported:
+                ++m_unsupported;
+                m_failure = o;
+                break;
+            case failure_type::warn:
+                ++m_warning_failures;
+                report_error(o);
+                break;
+            case failure_type::check:
+                ++m_check_failures;
+                report_error(o);
+                m_failure = o;
+                break;
+            case failure_type::require:
+                ++m_require_failures;
+                report_error(o);
+                m_failure = o;
+                break;
+            case failure_type::assert:
+                report_error(o);
+                break;
+            case failure_type::uncaught_exception:
+                ++m_uncaught_exceptions;
+                std::fprintf(stderr
+                    , "Test case FAILED with uncaught exception:\n"
+                      "    last checkpoint near %s::%lu %s\n\n"
+                    , o.file, o.line, o.func
+                    );
+                m_failure = o;
+                break;
+            }
+        }
+# if defined(__GNUC__)
+#   pragma GCC diagnostic pop
+# endif
+
+        test_outcome current_failure() const
+        {
+            return m_failure;
+        }
+
+        void clear_failure()
+        {
+            m_failure.type = failure_type::none;
+            m_failure.file = "";
+            m_failure.func = "";
+            m_failure.line = 0;
+            m_failure.expression = "";
+            m_failure.message = "";
+        }
+
+        std::size_t test_case_count() const
+        { return m_testcases; }
+
+        std::size_t test_case_failure_count() const
+        { return m_testcase_failures; }
+
+        std::size_t unsupported_count() const
+        { return m_unsupported; }
+
+        std::size_t assertion_count() const
+        { return m_assertions; }
+
+        std::size_t warning_failure_count() const
+        { return m_warning_failures; }
+
+        std::size_t check_failure_count() const
+        { return m_check_failures; }
+
+        std::size_t require_failure_count() const
+        { return m_require_failures; }
+
+        std::size_t failure_count() const
+        { return m_check_failures + m_require_failures + m_uncaught_exceptions; }
+
+        // Print a summary of what was run and the outcome.
+        void print_summary(const char* suitename) const
+        {
+            FILE* out = failure_count() ? stderr : stdout;
+            std::size_t testcases_run = m_testcases - m_unsupported;
+            std::fprintf(out, "Summary for testsuite %s:\n", suitename);
+            std::fprintf(out, "    %lu of %lu test cases passed.\n", testcases_run - m_testcase_failures, testcases_run);
+            std::fprintf(out, "    %lu of %lu assertions passed.\n", m_assertions - (m_warning_failures + m_check_failures + m_require_failures), m_assertions);
+            std::fprintf(out, "    %lu unsupported test case%s.\n", m_unsupported, (m_unsupported != 1 ? "s" : ""));
+        }
+
+    private:
+        test_reporter(test_reporter const &);
+        test_reporter const & operator=(test_reporter const &);
+
+        void report_error(test_outcome o) const
+        {
+            std::fprintf(stderr, "In %s:%lu Assertion %s failed.\n    in file: %s\n    %s\n"
+                , o.func, o.line, o.expression, o.file,  o.message ? o.message : ""
+              );
+        }
+
+    private:
+        // counts of testcases, failed testcases, and unsupported testcases.
+        std::size_t m_testcases;
+        std::size_t m_testcase_failures;
+        std::size_t m_unsupported;
+
+        // counts of assertions and assertion failures.
+        std::size_t m_assertions;
+        std::size_t m_warning_failures;
+        std::size_t m_check_failures;
+        std::size_t m_require_failures;
+        std::size_t m_uncaught_exceptions;
+
+        // The last failure. This is cleared between testcases.
+        test_outcome m_failure;
+    };
+
+    ////////////////////////////////////////////////////////////////////////////
+    inline test_reporter & get_reporter()
+    {
+        static test_reporter o;
+        return o;
+    }
+
+    ////////////////////////////////////////////////////////////////////////////
+    class test_runner
+    {
+    public:
+        test_runner(test_suite & ts)
+          : m_ts(ts)
+        {}
+
+    public:
+        int run()
+        {
+            // for each testcase
+            for (test_suite::const_iterator b = m_ts.begin(), e = m_ts.end();
+                 b != e; ++b)
+            {
+                test_case const& tc = *b;
+                set_checkpoint(tc.file, tc.func, tc.line);
+                get_reporter().test_case_begin();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+                try {
+#endif
+                    tc.invoke();
+#ifndef TEST_HAS_NO_EXCEPTIONS
+                } catch (...) {
+                    test_outcome o;
+                    o.type = failure_type::uncaught_exception;
+                    o.file = get_checkpoint().file;
+                    o.func = get_checkpoint().func;
+                    o.line = get_checkpoint().line;
+                    o.expression = "";
+                    o.message = "";
+                    get_reporter().report(o);
+                }
+#endif
+                get_reporter().test_case_end();
+            }
+            auto exit_code = get_reporter().failure_count() ? EXIT_FAILURE : EXIT_SUCCESS;
+            if (exit_code == EXIT_FAILURE || get_reporter().unsupported_count())
+              get_reporter().print_summary(m_ts.name());
+            return exit_code;
+        }
+
+    private:
+        test_runner(test_runner const &);
+        test_runner operator=(test_runner const &);
+
+        test_suite & m_ts;
+    };
+
+    namespace detail
+    {
+        template <class Iter1, class Iter2>
+        bool check_equal_collections_impl(
+            Iter1 start1, Iter1 const end1
+          , Iter2 start2, Iter2 const end2
+          )
+        {
+            while (start1 != end1 && start2 != end2) {
+                if (*start1 != *start2) {
+                    return false;
+                }
+                ++start1; ++start2;
+            }
+            return (start1 == end1 && start2 == end2);
+        }
+    }                                                       // namespace detail
+
+}                                                    // namespace rapid_cxx_test
+
+
+# if defined(__GNUC__)
+#   pragma GCC diagnostic pop
+# endif
+
+#endif /* RAPID_CXX_TEST_H */
diff --git a/app/src/main/cpp/libcxx/test/support/read_write.h b/app/src/main/cpp/libcxx/test/support/read_write.h
new file mode 100644
index 0000000..6ca9418
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/read_write.h
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCPP_TEST_SUPPORT_READ_WRITE_H
+#define LIBCPP_TEST_SUPPORT_READ_WRITE_H
+
+struct value_type_indirection {
+  using value_type = int;
+  value_type& operator*() const;
+};
+
+struct element_type_indirection {
+  using element_type = long;
+  element_type& operator*() const;
+};
+
+struct proxy_indirection {
+  using value_type = int;
+  value_type operator*() const;
+};
+
+struct read_only_indirection {
+  using value_type = int const;
+  value_type& operator*() const;
+};
+
+// doubles as missing_iter_reference_t
+struct missing_dereference {
+  using value_type = int;
+};
+
+#endif // LIBCPP_TEST_SUPPORT_READ_WRITE_H
diff --git a/app/src/main/cpp/libcxx/test/support/set_windows_crt_report_mode.h b/app/src/main/cpp/libcxx/test/support/set_windows_crt_report_mode.h
new file mode 100644
index 0000000..725f8a8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/set_windows_crt_report_mode.h
@@ -0,0 +1,36 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_SET_WINDOWS_CRT_REPORT_MODE_H
+#define SUPPORT_SET_WINDOWS_CRT_REPORT_MODE_H
+
+#ifndef _DEBUG
+#error _DEBUG must be defined when using this header
+#endif
+
+#ifndef _WIN32
+#error This header can only be used when targeting Windows
+#endif
+
+#include <crtdbg.h>
+
+// On Windows in debug builds the default assertion handler opens a new dialog
+// window which must be dismissed manually by the user. This function overrides
+// that setting and instead changes the assertion handler to log to stderr
+// instead.
+inline int init_crt_report_mode() {
+  _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_DEBUG);
+  _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_DEBUG);
+  _CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_DEBUG);
+  return 0;
+}
+
+static int init_crt_anchor = init_crt_report_mode();
+
+#endif // SUPPORT_SET_WINDOWS_CRT_REPORT_MODE_H
diff --git a/app/src/main/cpp/libcxx/test/support/string_literal.h b/app/src/main/cpp/libcxx/test/support/string_literal.h
new file mode 100644
index 0000000..0226044
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/string_literal.h
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_STRING_LITERAL_H
+#define SUPPORT_TEST_STRING_LITERAL_H
+
+#include "test_macros.h"
+
+#include <algorithm>
+#include <concepts>
+#include <string_view>
+
+#if TEST_STD_VER > 17
+
+/// Helper class to "transfer" a string literal
+///
+/// The MAKE_STRING helper macros turn a string literal into a const char*.
+/// This is an issue when testing std::format; its format-string needs a string
+/// literal for compile-time validation. This class does the job.
+///
+/// \note The class assumes a wchar_t can be initialized from a char.
+/// \note All members are public to avoid compilation errors.
+template <std::size_t N>
+struct string_literal {
+  consteval /*implicit*/ string_literal(const char (&str)[N + 1]) {
+    std::copy_n(str, N + 1, data_);
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    std::copy_n(str, N + 1, wdata_);
+#  endif
+  }
+
+  template <class CharT>
+  consteval std::basic_string_view<CharT> sv() const {
+    if constexpr (std::same_as<CharT, char>)
+      return std::basic_string_view{data_};
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+    else
+      return std::basic_string_view{wdata_};
+#  endif
+  }
+
+  char data_[N + 1];
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  wchar_t wdata_[N + 1];
+#  endif
+};
+
+template <std::size_t N>
+string_literal(const char (&str)[N]) -> string_literal<N - 1>;
+
+#endif // TEST_STD_VER > 17
+
+#endif // SUPPORT_TEST_STRING_LITERAL_H
diff --git a/app/src/main/cpp/libcxx/test/support/template_cost_testing.h b/app/src/main/cpp/libcxx/test/support/template_cost_testing.h
new file mode 100644
index 0000000..3e2376a
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/template_cost_testing.h
@@ -0,0 +1,37 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TEMPLATE_COST_TESTING_H
+#define TEST_SUPPORT_TEMPLATE_COST_TESTING_H
+
+// This file contains macros used to repeat an expression many times.
+// This is useful for testing the compile time and memory usage
+// of templates.
+
+#define REPEAT_10(DO_IT) \
+    DO_IT() DO_IT() DO_IT() DO_IT() DO_IT() \
+    DO_IT() DO_IT() DO_IT() DO_IT() DO_IT()
+#define REPEAT_100(DO_IT) \
+    REPEAT_10(DO_IT) REPEAT_10(DO_IT) REPEAT_10(DO_IT) REPEAT_10(DO_IT) REPEAT_10(DO_IT) \
+    REPEAT_10(DO_IT) REPEAT_10(DO_IT) REPEAT_10(DO_IT) REPEAT_10(DO_IT) REPEAT_10(DO_IT)
+#define REPEAT_200(DO_IT) \
+    REPEAT_100(DO_IT) REPEAT_100(DO_IT)
+#define REPEAT_300(DO_IT) \
+    REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT)
+#define REPEAT_500(DO_IT) \
+    REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT)
+#define REPEAT_1000(DO_IT) \
+    REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) \
+    REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT) REPEAT_100(DO_IT)
+#define REPEAT_5000(DO_IT) \
+    REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT)
+#define REPEAT_10000(DO_IT) \
+    REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) \
+    REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT) REPEAT_1000(DO_IT)
+
+#endif // TEST_SUPPORT_TEMPLATE_COST_TESTING_H
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/make_string_header.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/make_string_header.pass.cpp
new file mode 100644
index 0000000..4cee361
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/make_string_header.pass.cpp
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// UNSUPPORTED: no-localization
+
+// "support/make_string.h"
+
+#include "make_string.h"
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**) {
+  // clang-format off
+  assert(MAKE_STRING(char,
+         " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~")
+    ==   " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");
+
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+  assert(MAKE_STRING(wchar_t,
+         " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~")
+    ==  L" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");
+#endif
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+  assert(MAKE_STRING(char8_t,
+         " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~")
+    == u8" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");
+#endif
+  assert(MAKE_STRING(char16_t,
+         " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~")
+    ==  u" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");
+
+  assert(MAKE_STRING(char32_t,
+         " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~")
+    ==  U" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMN"
+             "OPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");
+
+  // clang-format on
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_check_assertion.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_check_assertion.pass.cpp
new file mode 100644
index 0000000..cd09445
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_check_assertion.pass.cpp
@@ -0,0 +1,64 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// REQUIRES: has-unix-headers
+// UNSUPPORTED: c++03
+// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{10.9|10.10|10.11|10.12|10.13|10.14|10.15|11.0|12.0}}
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_ASSERTIONS=1
+
+#include <cassert>
+#include <cstdio>
+#include <string>
+
+#include "check_assertion.h"
+
+template <class Func>
+inline bool TestDeathTest(const char* stmt, Func&& func, DeathTest::ResultKind ExpectResult, AssertionInfoMatcher Matcher = AnyMatcher) {
+  DeathTest DT(Matcher);
+  DeathTest::ResultKind RK = DT.Run(func);
+  auto OnFailure = [&](std::string msg) {
+    std::fprintf(stderr, "EXPECT_DEATH( %s ) failed! (%s)\n\n", stmt, msg.c_str());
+    if (!DT.getChildStdErr().empty()) {
+      std::fprintf(stderr, "---------- standard err ----------\n%s\n", DT.getChildStdErr().c_str());
+    }
+    if (!DT.getChildStdOut().empty()) {
+      std::fprintf(stderr, "---------- standard out ----------\n%s\n", DT.getChildStdOut().c_str());
+    }
+    return false;
+  };
+  if (RK != ExpectResult)
+    return OnFailure(std::string("expected result did not occur: expected ") + DeathTest::ResultKindToString(ExpectResult) + " got: " + DeathTest::ResultKindToString(RK));
+  return true;
+}
+#define TEST_DEATH_TEST(RK, ...) assert((TestDeathTest(#__VA_ARGS__, [&]() { __VA_ARGS__; }, RK, AnyMatcher )))
+
+#define TEST_DEATH_TEST_MATCHES(RK, Matcher, ...) assert((TestDeathTest(#__VA_ARGS__, [&]() { __VA_ARGS__; }, RK, Matcher)))
+
+void my_libcpp_assert() {
+  _LIBCPP_ASSERT(false, "other");
+}
+
+void test_no_match_found() {
+  AssertionInfoMatcher ExpectMatch("my message");
+  TEST_DEATH_TEST_MATCHES(DeathTest::RK_MatchFailure, ExpectMatch, my_libcpp_assert());
+}
+
+void test_did_not_die() {
+  TEST_DEATH_TEST(DeathTest::RK_DidNotDie, ((void)0));
+}
+
+void test_unknown() {
+  TEST_DEATH_TEST(DeathTest::RK_Unknown, std::exit(13));
+}
+
+int main(int, char**) {
+  test_no_match_found();
+  test_did_not_die();
+  test_unknown();
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_convertible_header.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_convertible_header.pass.cpp
new file mode 100644
index 0000000..eb404ed
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_convertible_header.pass.cpp
@@ -0,0 +1,71 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// "support/test_convertible.h"
+
+#include "test_convertible.h"
+
+#include "test_macros.h"
+
+struct ImplicitDefault {
+  ImplicitDefault() {}
+};
+static_assert(test_convertible<ImplicitDefault>(), "Must be convertible");
+
+struct ExplicitDefault {
+  explicit ExplicitDefault() {}
+};
+static_assert(!test_convertible<ExplicitDefault>(), "Must not be convertible");
+
+struct ImplicitInt {
+  ImplicitInt(int) {}
+};
+static_assert(test_convertible<ImplicitInt, int>(), "Must be convertible");
+
+struct ExplicitInt {
+  explicit ExplicitInt(int) {}
+};
+static_assert(!test_convertible<ExplicitInt, int>(), "Must not be convertible");
+
+struct ImplicitCopy {
+  ImplicitCopy(ImplicitCopy const&) {}
+};
+static_assert(test_convertible<ImplicitCopy, ImplicitCopy>(), "Must be convertible");
+
+struct ExplicitCopy {
+  explicit ExplicitCopy(ExplicitCopy const&) {}
+};
+static_assert(!test_convertible<ExplicitCopy, ExplicitCopy>(), "Must not be convertible");
+
+struct ImplicitMove {
+  ImplicitMove(ImplicitMove&&) {}
+};
+static_assert(test_convertible<ImplicitMove, ImplicitMove>(), "Must be convertible");
+
+struct ExplicitMove {
+  explicit ExplicitMove(ExplicitMove&&) {}
+};
+static_assert(!test_convertible<ExplicitMove, ExplicitMove>(), "Must not be convertible");
+
+struct ImplicitArgs {
+  ImplicitArgs(int, int, int) {}
+};
+static_assert(test_convertible<ImplicitArgs, int, int, int>(), "Must be convertible");
+
+struct ExplicitArgs {
+  explicit ExplicitArgs(int, int, int) {}
+};
+static_assert(!test_convertible<ExplicitArgs, int, int, int>(), "Must not be convertible");
+
+int main(int, char**) {
+    // Nothing to do
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.exceptions.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.exceptions.pass.cpp
new file mode 100644
index 0000000..1da9dc6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.exceptions.pass.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the TEST_HAS_NO_EXCEPTIONS macro is NOT defined when exceptions
+// are enabled.
+
+// UNSUPPORTED: no-exceptions
+
+#include "test_macros.h"
+
+#ifdef TEST_HAS_NO_EXCEPTIONS
+#  error "TEST_HAS_NO_EXCEPTIONS should NOT be defined"
+#endif
+
+int main(int, char**) {
+    try { (void)0; } catch (...) { }
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.no_exceptions.verify.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.no_exceptions.verify.cpp
new file mode 100644
index 0000000..cc156e2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.no_exceptions.verify.cpp
@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the TEST_HAS_NO_EXCEPTIONS macro is defined when exceptions are
+// disabled.
+
+// REQUIRES: no-exceptions
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+#  error "TEST_HAS_NO_EXCEPTIONS should be defined"
+#endif
+
+int main(int, char**) {
+    try { (void)0; } catch (...) { } // expected-error {{exceptions disabled}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.no_rtti.verify.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.no_rtti.verify.cpp
new file mode 100644
index 0000000..a7f3557
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.no_rtti.verify.cpp
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the TEST_HAS_NO_RTTI macro is defined when the no-rtti Lit feature
+// is defined.
+
+// REQUIRES: no-rtti
+
+#include "test_macros.h"
+
+#ifndef TEST_HAS_NO_RTTI
+#  error "TEST_HAS_NO_RTTI should be defined"
+#endif
+
+struct A { virtual ~A() { } };
+struct B : A { };
+
+int main(int, char**) {
+    A* ptr = new B;
+    (void)dynamic_cast<B*>(ptr); // expected-error{{use of dynamic_cast requires -frtti}}
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.rtti.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.rtti.pass.cpp
new file mode 100644
index 0000000..ff8271c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_macros_header.rtti.pass.cpp
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Make sure the TEST_HAS_NO_RTTI macro is NOT defined when the no-rtti Lit
+// feature isn't defined.
+
+// UNSUPPORTED: no-rtti
+
+#include "test_macros.h"
+
+#ifdef TEST_HAS_NO_RTTI
+#  error "TEST_HAS_NO_RTTI should NOT be defined"
+#endif
+
+struct A { virtual ~A() { } };
+struct B : A { };
+
+int main(int, char**) {
+    A* ptr = new B;
+    (void)dynamic_cast<B*>(ptr);
+    delete ptr;
+    return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_poisoned_hash_helper.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_poisoned_hash_helper.pass.cpp
new file mode 100644
index 0000000..f204fc3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_poisoned_hash_helper.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Test that the header `poisoned_hash_helper.h` doesn't include any
+// headers that provide hash<T> specializations. This is required so that the
+// 'test_library_hash_specializations_available()' function returns false
+// by default, unless a STL header providing hash has already been included.
+
+#include "poisoned_hash_helper.h"
+
+#include "test_macros.h"
+
+template <class T, size_t = sizeof(T)>
+constexpr bool is_complete_imp(int) { return true; }
+template <class> constexpr bool is_complete_imp(long) { return false; }
+template <class T> constexpr bool is_complete() { return is_complete_imp<T>(0); }
+
+template <class T> struct has_complete_hash {
+  enum { value = is_complete<std::hash<T> >() };
+};
+
+int main(int, char**) {
+  static_assert(LibraryHashTypes::assertTrait<has_complete_hash, false>(), "");
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/test_proxy.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/test_proxy.pass.cpp
new file mode 100644
index 0000000..668caf1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/test_proxy.pass.cpp
@@ -0,0 +1,300 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17
+
+#include "MoveOnly.h"
+#include "test_iterators.h"
+
+#include <cassert>
+
+constexpr void testProxy() {
+  // constructor value
+  {
+    Proxy<int> p{5};
+    assert(p.data == 5);
+  }
+
+  // constructor reference
+  {
+    int i = 5;
+    Proxy<int&> p{i};
+    assert(&p.data == &i);
+  }
+
+  // constructor conversion
+  {
+    int i = 5;
+    Proxy<int&> p1{i};
+    Proxy<int> p2 = p1;
+    assert(p2.data == 5);
+
+    Proxy<int&> p3{p2};
+    assert(&(p3.data) == &(p2.data));
+
+    MoveOnly m1{8};
+    Proxy<MoveOnly&&> p4 = std::move(m1);
+
+    Proxy<MoveOnly> p5 = std::move(p4);
+    assert(p5.data.get() == 8);
+  }
+
+  // assignment
+  {
+    Proxy<int> p1{5};
+    Proxy<int> p2{6};
+    p1 = p2;
+    assert(p1.data == 6);
+
+    MoveOnly m1{8};
+    Proxy<MoveOnly&&> p3 = std::move(m1);
+    Proxy<MoveOnly> p4{MoveOnly{9}};
+    p4 = std::move(p3);
+    assert(p4.data.get() == 8);
+
+    // `T` is a reference type.
+    int i = 5, j = 6, k = 7, x = 8;
+    Proxy<int&> p5{i};
+    // `Other` is a prvalue.
+    p5 = Proxy<int&>{j};
+    assert(p5.data == 6);
+    // `Other` is a const lvalue.
+    const Proxy<int&> p_ref{k};
+    p5 = p_ref;
+    assert(p5.data == 7);
+    // `Other` is an xvalue.
+    Proxy<int&> px{x};
+    p5 = std::move(px);
+    assert(p5.data == 8);
+  }
+
+  // const assignment
+  {
+    int i = 5;
+    int j = 6;
+    const Proxy<int&> p1{i};
+    const Proxy<int&> p2{j};
+    p1 = p2;
+    assert(i == 6);
+
+    MoveOnly m1{8};
+    MoveOnly m2{9};
+    Proxy<MoveOnly&&> p3       = std::move(m1);
+    const Proxy<MoveOnly&&> p4 = std::move(m2);
+    p4                         = std::move(p3);
+    assert(p4.data.get() == 8);
+  }
+
+  // compare
+  {
+    Proxy<int> p1{5};
+    Proxy<int> p2{6};
+    assert(p1 != p2);
+    assert(p1 < p2);
+
+    // Comparing `T` and `T&`.
+    int i = 5, j = 6;
+    Proxy<int&> p_ref{i};
+    Proxy<const int&> p_cref{j};
+    assert(p1 == p_ref);
+    assert(p2 == p_cref);
+    assert(p_ref == p1);
+    assert(p_cref == p2);
+    assert(p_ref == p_ref);
+    assert(p_cref == p_cref);
+    assert(p_ref != p_cref);
+  }
+}
+
+static_assert(std::input_iterator<ProxyIterator<cpp20_input_iterator<int*>>>);
+static_assert(!std::forward_iterator<ProxyIterator<cpp20_input_iterator<int*>>>);
+
+static_assert(std::forward_iterator<ProxyIterator<forward_iterator<int*>>>);
+static_assert(!std::bidirectional_iterator<ProxyIterator<forward_iterator<int*>>>);
+
+static_assert(std::bidirectional_iterator<ProxyIterator<bidirectional_iterator<int*>>>);
+static_assert(!std::random_access_iterator<ProxyIterator<bidirectional_iterator<int*>>>);
+
+static_assert(std::random_access_iterator<ProxyIterator<random_access_iterator<int*>>>);
+static_assert(!std::contiguous_iterator<ProxyIterator<random_access_iterator<int*>>>);
+
+static_assert(std::random_access_iterator<ProxyIterator<contiguous_iterator<int*>>>);
+static_assert(!std::contiguous_iterator<ProxyIterator<contiguous_iterator<int*>>>);
+
+template <class Iter>
+constexpr void testInputIteratorOperation() {
+  int data[] = {1, 2};
+  ProxyIterator<Iter> iter{Iter{data}};
+  sentinel_wrapper<ProxyIterator<Iter>> sent{ProxyIterator<Iter>{Iter{data + 2}}};
+
+  std::same_as<Proxy<int&>> decltype(auto) result = *iter;
+  assert(result.data == 1);
+  auto& iter2 = ++iter;
+  static_assert(std::is_same_v<decltype(++iter), ProxyIterator<Iter>&>);
+  assert(&iter2 == &iter);
+  assert((*iter).data == 2);
+  ++iter;
+  assert(iter == sent);
+}
+
+template <class Iter>
+constexpr void testForwardIteratorOperation() {
+  int data[] = {1, 2};
+  ProxyIterator<Iter> iter{Iter{data}};
+
+  std::same_as<ProxyIterator<Iter>> decltype(auto) it2 = iter++;
+  assert((*it2).data == 1);
+  assert((*iter).data == 2);
+}
+
+template <class Iter>
+constexpr void testBidirectionalIteratorOperation() {
+  int data[] = {1, 2};
+  ProxyIterator<Iter> iter{Iter{data}};
+  ++iter;
+  assert((*iter).data == 2);
+
+  auto& iter2 = --iter;
+  static_assert(std::is_same_v<decltype(--iter), ProxyIterator<Iter>&>);
+  assert(&iter2 == &iter);
+  assert((*iter).data == 1);
+  ++iter;
+
+  std::same_as<ProxyIterator<Iter>> decltype(auto) iter3 = iter--;
+  assert((*iter).data == 1);
+  assert((*iter3).data == 2);
+}
+
+template <class Iter>
+constexpr void testRandomAccessIteratorOperation() {
+  int data[] = {1, 2, 3, 4, 5};
+  ProxyIterator<Iter> iter{Iter{data}};
+
+  auto& iter2 = iter += 2;
+  static_assert(std::is_same_v<decltype(iter += 2), ProxyIterator<Iter>&>);
+  assert(&iter2 == &iter);
+  assert((*iter).data == 3);
+
+  auto& iter3 = iter -= 1;
+  static_assert(std::is_same_v<decltype(iter -= 1), ProxyIterator<Iter>&>);
+  assert(&iter3 == &iter);
+  assert((*iter).data == 2);
+
+  std::same_as<Proxy<int&>> decltype(auto) r = iter[2];
+  assert(r.data == 4);
+
+  std::same_as<ProxyIterator<Iter>> decltype(auto) iter4 = iter - 1;
+  assert((*iter4).data == 1);
+
+  std::same_as<ProxyIterator<Iter>> decltype(auto) iter5 = iter4 + 2;
+  assert((*iter5).data == 3);
+
+  std::same_as<ProxyIterator<Iter>> decltype(auto) iter6 = 3 + iter4;
+  assert((*iter6).data == 4);
+
+  std::same_as<std::iter_difference_t<Iter>> decltype(auto) n = iter6 - iter5;
+  assert(n == 1);
+
+  assert(iter4 < iter5);
+  assert(iter3 <= iter5);
+  assert(iter5 > iter4);
+  assert(iter6 >= iter4);
+}
+
+constexpr void testProxyIterator() {
+  // input iterator operations
+  {
+    testInputIteratorOperation<cpp20_input_iterator<int*>>();
+    testInputIteratorOperation<forward_iterator<int*>>();
+    testInputIteratorOperation<bidirectional_iterator<int*>>();
+    testInputIteratorOperation<random_access_iterator<int*>>();
+    testInputIteratorOperation<contiguous_iterator<int*>>();
+  }
+
+  // forward iterator operations
+  {
+    testForwardIteratorOperation<forward_iterator<int*>>();
+    testForwardIteratorOperation<bidirectional_iterator<int*>>();
+    testForwardIteratorOperation<random_access_iterator<int*>>();
+    testForwardIteratorOperation<contiguous_iterator<int*>>();
+  }
+
+  // bidirectional iterator operations
+  {
+    testBidirectionalIteratorOperation<bidirectional_iterator<int*>>();
+    testBidirectionalIteratorOperation<random_access_iterator<int*>>();
+    testBidirectionalIteratorOperation<contiguous_iterator<int*>>();
+  }
+
+  // random access iterator operations
+  {
+    testRandomAccessIteratorOperation<random_access_iterator<int*>>();
+    testRandomAccessIteratorOperation<contiguous_iterator<int*>>();
+  }
+}
+
+constexpr void testProxyRange() {
+  int data[] = {3, 4, 5};
+  ProxyRange r{data};
+  std::same_as<ProxyIterator<int*>> decltype(auto) it = std::ranges::begin(r);
+  assert((*it).data == 3);
+  it += 3;
+  assert(it == std::ranges::end(r));
+}
+
+template <class Iter>
+concept StdMoveWorks = requires(std::iter_value_t<Iter> val, Iter iter) { val = std::move(*iter); };
+
+static_assert(StdMoveWorks<MoveOnly*>);
+static_assert(!StdMoveWorks<ProxyIterator<MoveOnly*>>);
+
+// although this "works" but it actually creates a copy instead of move
+static_assert(StdMoveWorks<ProxyIterator<int*>>);
+
+using std::swap;
+
+template <class Iter>
+concept SwapWorks = requires(Iter iter1, Iter iter2) { swap(*iter1, *iter2); };
+
+static_assert(SwapWorks<int*>);
+static_assert(!SwapWorks<ProxyIterator<int*>>);
+
+constexpr bool test() {
+  testProxy();
+  testProxyIterator();
+  testProxyRange();
+
+  // iter_move
+  {
+    MoveOnly data[] = {5, 6, 7};
+    ProxyRange r{data};
+    auto it                               = r.begin();
+    std::iter_value_t<decltype(it)> moved = std::ranges::iter_move(it);
+    assert(moved.data.get() == 5);
+  }
+
+  // iter_swap
+  {
+    MoveOnly data[] = {5, 6, 7};
+    ProxyRange r{data};
+    auto it1 = r.begin();
+    auto it2 = it1 + 2;
+    std::ranges::iter_swap(it1, it2);
+    assert(data[0].get() == 7);
+    assert(data[2].get() == 5);
+  }
+
+  return true;
+}
+
+int main(int, char**) {
+  test();
+  static_assert(test());
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.support/type_algorithms.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.support/type_algorithms.pass.cpp
new file mode 100644
index 0000000..f94487d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.support/type_algorithms.pass.cpp
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <algorithm>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+// concatenate
+static_assert(std::is_same<meta::concatenate_t<meta::type_list<> >, meta::type_list<> >::value, "");
+static_assert(std::is_same<meta::concatenate_t<meta::type_list<int> >, meta::type_list<int> >::value, "");
+static_assert(
+    std::is_same<meta::concatenate_t<meta::type_list<int>, meta::type_list<long> >, meta::type_list<int, long> >::value,
+    "");
+static_assert(
+    std::is_same<meta::concatenate_t<meta::type_list<int>, meta::type_list<long>, meta::type_list<long long> >,
+                 meta::type_list<int, long, long long> >::value,
+    "");
+
+// apply_all
+template <int N>
+class NumT {};
+
+struct ApplyAllTest {
+  bool* is_called_array_;
+
+  TEST_CONSTEXPR ApplyAllTest(bool* is_called_array) : is_called_array_(is_called_array) {}
+
+  template <int N>
+  TEST_CONSTEXPR_CXX20 void check_num(NumT<N>) {
+    assert(!is_called_array_[N]);
+    is_called_array_[N] = true;
+  }
+
+  template <int N, int M>
+  TEST_CONSTEXPR_CXX20 void check_num(NumT<N>, NumT<M>) {
+    assert(!is_called_array_[N + M]);
+    is_called_array_[N + M] = true;
+  }
+
+  template <class... Types>
+  TEST_CONSTEXPR_CXX20 void operator()() {
+    check_num(Types()...);
+  }
+};
+
+struct Identity {
+  TEST_CONSTEXPR bool operator()(bool b) const { return b; }
+};
+
+TEST_CONSTEXPR_CXX20 void test_for_each() {
+  bool is_called_array[3] = {};
+  meta::for_each(meta::type_list<NumT<0>, NumT<1>, NumT<2> >(), ApplyAllTest(is_called_array));
+  assert(std::all_of(is_called_array, is_called_array + 3, Identity()));
+}
+
+TEST_CONSTEXPR_CXX20 bool test() {
+  test_for_each();
+  return true;
+}
+
+int main(int, char**) {
+  test();
+#if TEST_STD_VER >= 20
+  static_assert(test());
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.workarounds/c1xx_broken_is_trivially_copyable.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.workarounds/c1xx_broken_is_trivially_copyable.pass.cpp
new file mode 100644
index 0000000..ec85bdc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.workarounds/c1xx_broken_is_trivially_copyable.pass.cpp
@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Verify TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE.
+
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+
+struct S {
+  S(S const&) = default;
+  S(S&&) = default;
+  S& operator=(S const&) = delete;
+  S& operator=(S&&) = delete;
+};
+
+int main(int, char**) {
+#ifdef TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE
+  static_assert(!std::is_trivially_copyable<S>::value, "");
+#else
+  static_assert(std::is_trivially_copyable<S>::value, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test.workarounds/c1xx_broken_za_ctor_check.pass.cpp b/app/src/main/cpp/libcxx/test/support/test.workarounds/c1xx_broken_za_ctor_check.pass.cpp
new file mode 100644
index 0000000..4eb1677
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test.workarounds/c1xx_broken_za_ctor_check.pass.cpp
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// Verify TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK.
+
+#include <type_traits>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+
+struct X {
+    X(int) {}
+
+    X(X&&) = default;
+    X& operator=(X&&) = default;
+
+private:
+    X(const X&) = default;
+    X& operator=(const X&) = default;
+};
+
+void PushFront(X&&) {}
+
+template<class T = int>
+auto test(int) -> decltype(PushFront(std::declval<T>()), std::true_type{});
+auto test(long) -> std::false_type;
+
+int main(int, char**) {
+#ifdef TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK
+    static_assert(!decltype(test(0))::value, "");
+#else
+    static_assert(decltype(test(0))::value, "");
+#endif
+
+  return 0;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test_allocator.h b/app/src/main/cpp/libcxx/test/support/test_allocator.h
new file mode 100644
index 0000000..3b9676e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_allocator.h
@@ -0,0 +1,550 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_ALLOCATOR_H
+#define TEST_ALLOCATOR_H
+
+#include <type_traits>
+#include <new>
+#include <memory>
+#include <utility>
+#include <cstddef>
+#include <cstdlib>
+#include <climits>
+#include <cassert>
+
+#include "test_macros.h"
+
+template <class Alloc>
+TEST_CONSTEXPR_CXX20 inline typename std::allocator_traits<Alloc>::size_type alloc_max_size(Alloc const& a) {
+  typedef std::allocator_traits<Alloc> AT;
+  return AT::max_size(a);
+}
+
+struct test_allocator_statistics {
+  int time_to_throw = 0;
+  int throw_after = INT_MAX;
+  int count = 0;
+  int alloc_count = 0;
+  int copied = 0;
+  int moved = 0;
+  int converted = 0;
+
+  TEST_CONSTEXPR_CXX14 void clear() {
+    assert(count == 0 && "clearing leaking allocator data?");
+    count = 0;
+    time_to_throw = 0;
+    alloc_count = 0;
+    throw_after = INT_MAX;
+    clear_ctor_counters();
+  }
+
+  TEST_CONSTEXPR_CXX14 void clear_ctor_counters() {
+    copied = 0;
+    moved = 0;
+    converted = 0;
+  }
+};
+
+struct test_alloc_base {
+  TEST_CONSTEXPR static const int destructed_value = -1;
+  TEST_CONSTEXPR static const int moved_value = INT_MAX;
+};
+
+template <class T>
+class test_allocator {
+  int data_ = 0; // participates in equality
+  int id_ = 0;   // unique identifier, doesn't participate in equality
+  test_allocator_statistics* stats_ = nullptr;
+
+  template <class U>
+  friend class test_allocator;
+
+public:
+  typedef unsigned size_type;
+  typedef int difference_type;
+  typedef T value_type;
+  typedef value_type* pointer;
+  typedef const value_type* const_pointer;
+  typedef typename std::add_lvalue_reference<value_type>::type reference;
+  typedef typename std::add_lvalue_reference<const value_type>::type const_reference;
+
+  template <class U>
+  struct rebind {
+    typedef test_allocator<U> other;
+  };
+
+  TEST_CONSTEXPR test_allocator() TEST_NOEXCEPT = default;
+
+  TEST_CONSTEXPR_CXX14 explicit test_allocator(test_allocator_statistics* stats) TEST_NOEXCEPT : stats_(stats) {
+    if (stats_ != nullptr)
+      ++stats_->count;
+  }
+
+  TEST_CONSTEXPR explicit test_allocator(int data) TEST_NOEXCEPT : data_(data) {}
+
+  TEST_CONSTEXPR_CXX14 explicit test_allocator(int data, test_allocator_statistics* stats) TEST_NOEXCEPT
+      : data_(data), stats_(stats) {
+    if (stats != nullptr)
+      ++stats_->count;
+  }
+
+  TEST_CONSTEXPR explicit test_allocator(int data, int id) TEST_NOEXCEPT : data_(data), id_(id) {}
+
+  TEST_CONSTEXPR_CXX14 explicit test_allocator(int data, int id, test_allocator_statistics* stats) TEST_NOEXCEPT
+      : data_(data), id_(id), stats_(stats) {
+    if (stats_ != nullptr)
+      ++stats_->count;
+  }
+
+  TEST_CONSTEXPR_CXX14 test_allocator(const test_allocator& a) TEST_NOEXCEPT
+    : data_(a.data_), id_(a.id_), stats_(a.stats_) {
+    assert(a.data_ != test_alloc_base::destructed_value && a.id_ != test_alloc_base::destructed_value &&
+           "copying from destroyed allocator");
+    if (stats_ != nullptr) {
+      ++stats_->count;
+      ++stats_->copied;
+    }
+  }
+
+  TEST_CONSTEXPR_CXX14 test_allocator(test_allocator&& a) TEST_NOEXCEPT : data_(a.data_), id_(a.id_), stats_(a.stats_) {
+    if (stats_ != nullptr) {
+      ++stats_->count;
+      ++stats_->moved;
+    }
+    assert(a.data_ != test_alloc_base::destructed_value && a.id_ != test_alloc_base::destructed_value &&
+           "moving from destroyed allocator");
+    a.data_ = test_alloc_base::moved_value;
+    a.id_ = test_alloc_base::moved_value;
+  }
+
+  template <class U>
+  TEST_CONSTEXPR_CXX14 test_allocator(const test_allocator<U>& a) TEST_NOEXCEPT
+      : data_(a.data_), id_(a.id_), stats_(a.stats_) {
+    if (stats_ != nullptr) {
+      ++stats_->count;
+      ++stats_->converted;
+    }
+  }
+
+  TEST_CONSTEXPR_CXX20 ~test_allocator() TEST_NOEXCEPT {
+    assert(data_ != test_alloc_base::destructed_value);
+    assert(id_ != test_alloc_base::destructed_value);
+    if (stats_ != nullptr)
+      --stats_->count;
+    data_ = test_alloc_base::destructed_value;
+    id_ = test_alloc_base::destructed_value;
+  }
+
+  TEST_CONSTEXPR pointer address(reference x) const { return &x; }
+  TEST_CONSTEXPR const_pointer address(const_reference x) const { return &x; }
+
+  TEST_CONSTEXPR_CXX14 pointer allocate(size_type n, const void* = 0) {
+    assert(data_ != test_alloc_base::destructed_value);
+    if (stats_ != nullptr) {
+      if (stats_->time_to_throw >= stats_->throw_after)
+        TEST_THROW(std::bad_alloc());
+      ++stats_->time_to_throw;
+      ++stats_->alloc_count;
+    }
+    return std::allocator<value_type>().allocate(n);
+  }
+
+  TEST_CONSTEXPR_CXX14 void deallocate(pointer p, size_type s) {
+    assert(data_ != test_alloc_base::destructed_value);
+    if (stats_ != nullptr)
+      --stats_->alloc_count;
+    std::allocator<value_type>().deallocate(p, s);
+  }
+
+  TEST_CONSTEXPR size_type max_size() const TEST_NOEXCEPT { return UINT_MAX / sizeof(T); }
+
+  template <class U>
+  TEST_CONSTEXPR_CXX20 void construct(pointer p, U&& val) {
+#if TEST_STD_VER > 17
+    std::construct_at(std::to_address(p), std::forward<U>(val));
+#else
+    ::new (static_cast<void*>(p)) T(std::forward<U>(val));
+#endif
+  }
+
+  TEST_CONSTEXPR_CXX14 void destroy(pointer p) { p->~T(); }
+  TEST_CONSTEXPR friend bool operator==(const test_allocator& x, const test_allocator& y) { return x.data_ == y.data_; }
+  TEST_CONSTEXPR friend bool operator!=(const test_allocator& x, const test_allocator& y) { return !(x == y); }
+
+  TEST_CONSTEXPR int get_data() const { return data_; }
+  TEST_CONSTEXPR int get_id() const { return id_; }
+};
+
+template <class T>
+class non_default_test_allocator {
+  int data_ = 0;
+  test_allocator_statistics* stats_ = nullptr;
+
+  template <class U>
+  friend class non_default_test_allocator;
+
+public:
+  typedef unsigned size_type;
+  typedef int difference_type;
+  typedef T value_type;
+  typedef value_type* pointer;
+  typedef const value_type* const_pointer;
+  typedef typename std::add_lvalue_reference<value_type>::type reference;
+  typedef typename std::add_lvalue_reference<const value_type>::type const_reference;
+
+  template <class U>
+  struct rebind {
+    typedef non_default_test_allocator<U> other;
+  };
+
+  TEST_CONSTEXPR_CXX14
+  explicit non_default_test_allocator(int i, test_allocator_statistics* stats = nullptr) TEST_NOEXCEPT
+      : data_(i), stats_(stats) {
+    if (stats_ != nullptr) {
+      ++stats_->count;
+    }
+  }
+
+  TEST_CONSTEXPR_CXX14
+  non_default_test_allocator(const non_default_test_allocator& a) TEST_NOEXCEPT : data_(a.data_), stats_(a.stats_) {
+    if (stats_ != nullptr)
+      ++stats_->count;
+  }
+
+  template <class U>
+  TEST_CONSTEXPR_CXX14 non_default_test_allocator(const non_default_test_allocator<U>& a) TEST_NOEXCEPT
+      : data_(a.data_), stats_(a.stats_) {
+    if (stats_ != nullptr)
+      ++stats_->count;
+  }
+
+  TEST_CONSTEXPR_CXX20 ~non_default_test_allocator() TEST_NOEXCEPT {
+    assert(data_ != test_alloc_base::destructed_value);
+    if (stats_ != nullptr)
+      --stats_->count;
+    data_ = test_alloc_base::destructed_value;
+  }
+
+  TEST_CONSTEXPR pointer address(reference x) const { return &x; }
+  TEST_CONSTEXPR const_pointer address(const_reference x) const { return &x; }
+
+  TEST_CONSTEXPR_CXX20 pointer allocate(size_type n, const void* = nullptr) {
+    assert(data_ != test_alloc_base::destructed_value);
+    if (stats_ != nullptr) {
+      if (stats_->time_to_throw >= stats_->throw_after)
+        TEST_THROW(std::bad_alloc());
+      ++stats_->time_to_throw;
+      ++stats_->alloc_count;
+    }
+    return std::allocator<value_type>().allocate(n);
+  }
+
+  TEST_CONSTEXPR_CXX20 void deallocate(pointer p, size_type n) {
+    assert(data_ != test_alloc_base::destructed_value);
+    if (stats_ != nullptr)
+      --stats_->alloc_count;
+    std::allocator<value_type>().deallocate(p, n);
+  }
+
+  TEST_CONSTEXPR size_type max_size() const TEST_NOEXCEPT { return UINT_MAX / sizeof(T); }
+
+  TEST_CONSTEXPR friend bool operator==(const non_default_test_allocator& x, const non_default_test_allocator& y) {
+    return x.data_ == y.data_;
+  }
+
+  TEST_CONSTEXPR friend bool operator!=(const non_default_test_allocator& x, const non_default_test_allocator& y) {
+    return !(x == y);
+  }
+};
+
+template <>
+class test_allocator<void> {
+  int data_ = 0;
+  int id_ = 0;
+  test_allocator_statistics* stats_ = nullptr;
+
+  template <class U>
+  friend class test_allocator;
+
+public:
+  typedef unsigned size_type;
+  typedef int difference_type;
+  typedef void value_type;
+  typedef value_type* pointer;
+  typedef const value_type* const_pointer;
+
+  template <class U>
+  struct rebind {
+    typedef test_allocator<U> other;
+  };
+
+  TEST_CONSTEXPR test_allocator() TEST_NOEXCEPT = default;
+
+  TEST_CONSTEXPR_CXX14 explicit test_allocator(test_allocator_statistics* stats) TEST_NOEXCEPT : stats_(stats) {}
+
+  TEST_CONSTEXPR explicit test_allocator(int data) TEST_NOEXCEPT : data_(data) {}
+
+  TEST_CONSTEXPR explicit test_allocator(int data, test_allocator_statistics* stats) TEST_NOEXCEPT
+      : data_(data), stats_(stats)
+  {}
+
+  TEST_CONSTEXPR explicit test_allocator(int data, int id) : data_(data), id_(id) {}
+
+  TEST_CONSTEXPR_CXX14 explicit test_allocator(int data, int id, test_allocator_statistics* stats) TEST_NOEXCEPT
+      : data_(data), id_(id), stats_(stats)
+  {}
+
+  TEST_CONSTEXPR_CXX14 explicit test_allocator(const test_allocator& a) TEST_NOEXCEPT
+      : data_(a.data_), id_(a.id_), stats_(a.stats_)
+  {}
+
+  template <class U>
+  TEST_CONSTEXPR_CXX14 test_allocator(const test_allocator<U>& a) TEST_NOEXCEPT
+      : data_(a.data_), id_(a.id_), stats_(a.stats_)
+  {}
+
+  TEST_CONSTEXPR_CXX20 ~test_allocator() TEST_NOEXCEPT {
+    data_ = test_alloc_base::destructed_value;
+    id_ = test_alloc_base::destructed_value;
+  }
+
+  TEST_CONSTEXPR int get_id() const { return id_; }
+  TEST_CONSTEXPR int get_data() const { return data_; }
+
+  TEST_CONSTEXPR friend bool operator==(const test_allocator& x, const test_allocator& y) { return x.data_ == y.data_; }
+  TEST_CONSTEXPR friend bool operator!=(const test_allocator& x, const test_allocator& y) { return !(x == y); }
+};
+
+template <class T>
+class other_allocator {
+  int data_ = -1;
+
+  template <class U>
+  friend class other_allocator;
+
+public:
+  typedef T value_type;
+
+  TEST_CONSTEXPR_CXX14 other_allocator() {}
+  TEST_CONSTEXPR_CXX14 explicit other_allocator(int i) : data_(i) {}
+
+  template <class U>
+  TEST_CONSTEXPR_CXX14 other_allocator(const other_allocator<U>& a) : data_(a.data_) {}
+
+  TEST_CONSTEXPR_CXX20 T* allocate(std::size_t n) { return std::allocator<value_type>().allocate(n); }
+  TEST_CONSTEXPR_CXX20 void deallocate(T* p, std::size_t s) { std::allocator<value_type>().deallocate(p, s); }
+
+  TEST_CONSTEXPR_CXX14 other_allocator select_on_container_copy_construction() const { return other_allocator(-2); }
+
+  TEST_CONSTEXPR_CXX14 friend bool operator==(const other_allocator& x, const other_allocator& y) {
+    return x.data_ == y.data_;
+  }
+
+  TEST_CONSTEXPR_CXX14 friend bool operator!=(const other_allocator& x, const other_allocator& y) { return !(x == y); }
+
+  typedef std::true_type propagate_on_container_copy_assignment;
+  typedef std::true_type propagate_on_container_move_assignment;
+  typedef std::true_type propagate_on_container_swap;
+
+#if TEST_STD_VER < 11
+  std::size_t max_size() const { return UINT_MAX / sizeof(T); }
+#endif
+};
+
+struct Ctor_Tag {};
+
+template <typename T>
+class TaggingAllocator;
+
+struct Tag_X {
+  // All constructors must be passed the Tag type.
+
+  // DefaultInsertable into vector<X, TaggingAllocator<X>>,
+  TEST_CONSTEXPR Tag_X(Ctor_Tag) {}
+  // CopyInsertable into vector<X, TaggingAllocator<X>>,
+  TEST_CONSTEXPR Tag_X(Ctor_Tag, const Tag_X&) {}
+  // MoveInsertable into vector<X, TaggingAllocator<X>>, and
+  TEST_CONSTEXPR Tag_X(Ctor_Tag, Tag_X&&) {}
+
+  // EmplaceConstructible into vector<X, TaggingAllocator<X>> from args.
+  template <typename... Args>
+  TEST_CONSTEXPR Tag_X(Ctor_Tag, Args&&...) {}
+
+  // not DefaultConstructible, CopyConstructible or MoveConstructible.
+  Tag_X() = delete;
+  Tag_X(const Tag_X&) = delete;
+  Tag_X(Tag_X&&) = delete;
+
+  // CopyAssignable.
+  TEST_CONSTEXPR_CXX14 Tag_X& operator=(const Tag_X&) { return *this; };
+
+  // MoveAssignable.
+  TEST_CONSTEXPR_CXX14 Tag_X& operator=(Tag_X&&) { return *this; };
+
+private:
+  ~Tag_X() = default;
+  // Erasable from vector<X, TaggingAllocator<X>>.
+  friend class TaggingAllocator<Tag_X>;
+};
+
+template <typename T>
+class TaggingAllocator {
+public:
+  using value_type = T;
+  TaggingAllocator() = default;
+
+  template <typename U>
+  TEST_CONSTEXPR TaggingAllocator(const TaggingAllocator<U>&) {}
+
+  template <typename... Args>
+  TEST_CONSTEXPR_CXX20 void construct(Tag_X* p, Args&&... args) {
+#if TEST_STD_VER > 17
+    std::construct_at(p, Ctor_Tag{}, std::forward<Args>(args)...);
+#else
+    ::new (static_cast<void*>(p)) Tag_X(Ctor_Tag(), std::forward<Args>(args)...);
+#endif
+  }
+
+  template <typename U>
+  TEST_CONSTEXPR_CXX20 void destroy(U* p) {
+    p->~U();
+  }
+
+  TEST_CONSTEXPR_CXX20 T* allocate(std::size_t n) { return std::allocator<T>().allocate(n); }
+  TEST_CONSTEXPR_CXX20 void deallocate(T* p, std::size_t n) { std::allocator<T>().deallocate(p, n); }
+};
+
+template <std::size_t MaxAllocs>
+struct limited_alloc_handle {
+  std::size_t outstanding_ = 0;
+  void* last_alloc_ = nullptr;
+
+  template <class T>
+  TEST_CONSTEXPR_CXX20 T* allocate(std::size_t N) {
+    if (N + outstanding_ > MaxAllocs)
+      TEST_THROW(std::bad_alloc());
+    auto alloc = std::allocator<T>().allocate(N);
+    last_alloc_ = alloc;
+    outstanding_ += N;
+    return alloc;
+  }
+
+  template <class T>
+  TEST_CONSTEXPR_CXX20 void deallocate(T* ptr, std::size_t N) {
+    if (ptr == last_alloc_) {
+      last_alloc_ = nullptr;
+      assert(outstanding_ >= N);
+      outstanding_ -= N;
+    }
+    std::allocator<T>().deallocate(ptr, N);
+  }
+};
+
+namespace detail {
+template <class T>
+class thread_unsafe_shared_ptr {
+public:
+  thread_unsafe_shared_ptr() = default;
+
+  TEST_CONSTEXPR_CXX14 thread_unsafe_shared_ptr(const thread_unsafe_shared_ptr& other) : block(other.block) {
+    ++block->ref_count;
+  }
+
+  TEST_CONSTEXPR_CXX20 ~thread_unsafe_shared_ptr() {
+    --block->ref_count;
+    if (block->ref_count != 0)
+      return;
+    typedef std::allocator_traits<std::allocator<control_block> > allocator_traits;
+    std::allocator<control_block> alloc;
+    allocator_traits::destroy(alloc, block);
+    allocator_traits::deallocate(alloc, block, 1);
+  }
+
+  TEST_CONSTEXPR const T& operator*() const { return block->content; }
+  TEST_CONSTEXPR const T* operator->() const { return &block->content; }
+  TEST_CONSTEXPR_CXX14 T& operator*() { return block->content; }
+  TEST_CONSTEXPR_CXX14 T* operator->() { return &block->content; }
+  TEST_CONSTEXPR_CXX14 T* get() { return &block->content; }
+  TEST_CONSTEXPR const T* get() const { return &block->content; }
+
+private:
+  struct control_block {
+    template <class... Args>
+    TEST_CONSTEXPR control_block(Args... args) : content(std::forward<Args>(args)...) {}
+    size_t ref_count = 1;
+    T content;
+  };
+
+  control_block* block = nullptr;
+
+  template <class U, class... Args>
+  friend TEST_CONSTEXPR_CXX20 thread_unsafe_shared_ptr<U> make_thread_unsafe_shared(Args...);
+};
+
+template <class T, class... Args>
+TEST_CONSTEXPR_CXX20 thread_unsafe_shared_ptr<T> make_thread_unsafe_shared(Args... args) {
+  typedef typename thread_unsafe_shared_ptr<T>::control_block control_block_type;
+  typedef std::allocator_traits<std::allocator<control_block_type> > allocator_traits;
+
+  thread_unsafe_shared_ptr<T> ptr;
+  std::allocator<control_block_type> alloc;
+  ptr.block = allocator_traits::allocate(alloc, 1);
+  allocator_traits::construct(alloc, ptr.block, std::forward<Args>(args)...);
+
+  return ptr;
+}
+} // namespace detail
+
+template <class T, std::size_t N>
+class limited_allocator {
+  template <class U, std::size_t UN>
+  friend class limited_allocator;
+  typedef limited_alloc_handle<N> BuffT;
+  detail::thread_unsafe_shared_ptr<BuffT> handle_;
+
+public:
+  typedef T value_type;
+  typedef value_type* pointer;
+  typedef const value_type* const_pointer;
+  typedef value_type& reference;
+  typedef const value_type& const_reference;
+  typedef std::size_t size_type;
+  typedef std::ptrdiff_t difference_type;
+
+  template <class U>
+  struct rebind {
+    typedef limited_allocator<U, N> other;
+  };
+
+  TEST_CONSTEXPR_CXX20 limited_allocator() : handle_(detail::make_thread_unsafe_shared<BuffT>()) {}
+
+  limited_allocator(limited_allocator const&) = default;
+
+  template <class U>
+  TEST_CONSTEXPR explicit limited_allocator(limited_allocator<U, N> const& other) : handle_(other.handle_) {}
+
+  limited_allocator& operator=(const limited_allocator&) = delete;
+
+  TEST_CONSTEXPR_CXX20 pointer allocate(size_type n) { return handle_->template allocate<T>(n); }
+  TEST_CONSTEXPR_CXX20 void deallocate(pointer p, size_type n) { handle_->template deallocate<T>(p, n); }
+  TEST_CONSTEXPR size_type max_size() const { return N; }
+  TEST_CONSTEXPR BuffT* getHandle() const { return handle_.get(); }
+};
+
+template <class T, class U, std::size_t N>
+TEST_CONSTEXPR inline bool operator==(limited_allocator<T, N> const& LHS, limited_allocator<U, N> const& RHS) {
+  return LHS.getHandle() == RHS.getHandle();
+}
+
+template <class T, class U, std::size_t N>
+TEST_CONSTEXPR inline bool operator!=(limited_allocator<T, N> const& LHS, limited_allocator<U, N> const& RHS) {
+  return !(LHS == RHS);
+}
+
+#endif // TEST_ALLOCATOR_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_basic_format_arg.h b/app/src/main/cpp/libcxx/test/support/test_basic_format_arg.h
new file mode 100644
index 0000000..d8547d3
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_basic_format_arg.h
@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include <concepts>
+#include <format>
+
+#include "test_macros.h"
+
+/// Returns whether the basic_format_arg contains a type T with the expected value.
+template <class Context, class T>
+bool test_basic_format_arg(std::basic_format_arg<Context> arg, T expected) {
+  return std::visit_format_arg(
+      [expected](auto a) {
+        if constexpr (std::same_as<decltype(a), T>)
+          return a == expected;
+        else
+          return false;
+      },
+      arg);
+}
diff --git a/app/src/main/cpp/libcxx/test/support/test_comparisons.h b/app/src/main/cpp/libcxx/test/support/test_comparisons.h
new file mode 100644
index 0000000..8187a7c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_comparisons.h
@@ -0,0 +1,241 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//  A set of routines for testing the comparison operators of a type
+//
+//      FooOrder<expected-ordering>  All seven comparison operators, requires C++20 or newer.
+//      FooComparison                All six pre-C++20 comparison operators
+//      FooEquality                  Equality operators operator== and operator!=
+//
+//      AssertXAreNoexcept           static_asserts that the operations are all noexcept.
+//      AssertXReturnBool            static_asserts that the operations return bool.
+//      AssertOrderReturn            static_asserts that the pre-C++20 comparison operations
+//                                   return bool and operator<=> returns the proper type.
+//      AssertXConvertibleToBool     static_asserts that the operations return something convertible to bool.
+//      testXValues                  returns the result of the comparison of all operations.
+//
+//      AssertOrderConvertibleToBool doesn't exist yet. It will be implemented when needed.
+
+#ifndef TEST_COMPARISONS_H
+#define TEST_COMPARISONS_H
+
+#include <cassert>
+#include <concepts>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+// Test the consistency of the six basic comparison operators for values that are ordered or unordered.
+template <class T, class U = T>
+TEST_NODISCARD TEST_CONSTEXPR_CXX14 bool
+testComparisonsComplete(const T& t1, const U& t2, bool isEqual, bool isLess, bool isGreater) {
+    assert(((isEqual ? 1 : 0) + (isLess ? 1 : 0) + (isGreater ? 1 : 0) <= 1) &&
+           "at most one of isEqual, isLess, and isGreater can be true");
+    if (isEqual) {
+        if (!(t1 == t2)) return false;
+        if (!(t2 == t1)) return false;
+        if ( (t1 != t2)) return false;
+        if ( (t2 != t1)) return false;
+        if ( (t1  < t2)) return false;
+        if ( (t2  < t1)) return false;
+        if (!(t1 <= t2)) return false;
+        if (!(t2 <= t1)) return false;
+        if ( (t1  > t2)) return false;
+        if ( (t2  > t1)) return false;
+        if (!(t1 >= t2)) return false;
+        if (!(t2 >= t1)) return false;
+    } else if (isLess) {
+        if ( (t1 == t2)) return false;
+        if ( (t2 == t1)) return false;
+        if (!(t1 != t2)) return false;
+        if (!(t2 != t1)) return false;
+        if (!(t1  < t2)) return false;
+        if ( (t2  < t1)) return false;
+        if (!(t1 <= t2)) return false;
+        if ( (t2 <= t1)) return false;
+        if ( (t1  > t2)) return false;
+        if (!(t2  > t1)) return false;
+        if ( (t1 >= t2)) return false;
+        if (!(t2 >= t1)) return false;
+    } else if (isGreater) {
+        if ( (t1 == t2)) return false;
+        if ( (t2 == t1)) return false;
+        if (!(t1 != t2)) return false;
+        if (!(t2 != t1)) return false;
+        if ( (t1  < t2)) return false;
+        if (!(t2  < t1)) return false;
+        if ( (t1 <= t2)) return false;
+        if (!(t2 <= t1)) return false;
+        if (!(t1  > t2)) return false;
+        if ( (t2  > t1)) return false;
+        if (!(t1 >= t2)) return false;
+        if ( (t2 >= t1)) return false;
+    } else { // unordered
+        if ( (t1 == t2)) return false;
+        if ( (t2 == t1)) return false;
+        if (!(t1 != t2)) return false;
+        if (!(t2 != t1)) return false;
+        if ( (t1  < t2)) return false;
+        if ( (t2  < t1)) return false;
+        if ( (t1 <= t2)) return false;
+        if ( (t2 <= t1)) return false;
+        if ( (t1  > t2)) return false;
+        if ( (t2  > t1)) return false;
+        if ( (t1 >= t2)) return false;
+        if ( (t2 >= t1)) return false;
+    }
+
+    return true;
+}
+
+// Test the six basic comparison operators for ordered values.
+template <class T, class U = T>
+TEST_NODISCARD TEST_CONSTEXPR_CXX14 bool testComparisons(const T& t1, const U& t2, bool isEqual, bool isLess) {
+    assert(!(isEqual && isLess) && "isEqual and isLess cannot be both true");
+    bool isGreater = !isEqual && !isLess;
+    return testComparisonsComplete(t1, t2, isEqual, isLess, isGreater);
+}
+
+//  Easy call when you can init from something already comparable.
+template <class T, class Param>
+TEST_NODISCARD TEST_CONSTEXPR_CXX14 bool testComparisonsValues(Param val1, Param val2)
+{
+    const bool isEqual   = val1 == val2;
+    const bool isLess    = val1 <  val2;
+    const bool isGreater = val1  > val2;
+
+    return testComparisonsComplete(T(val1), T(val2), isEqual, isLess, isGreater);
+}
+
+template <class T, class U = T>
+TEST_CONSTEXPR_CXX14 void AssertComparisonsAreNoexcept() {
+    ASSERT_NOEXCEPT(std::declval<const T&>() == std::declval<const U&>());
+    ASSERT_NOEXCEPT(std::declval<const T&>() != std::declval<const U&>());
+    ASSERT_NOEXCEPT(std::declval<const T&>() <  std::declval<const U&>());
+    ASSERT_NOEXCEPT(std::declval<const T&>() <= std::declval<const U&>());
+    ASSERT_NOEXCEPT(std::declval<const T&>() >  std::declval<const U&>());
+    ASSERT_NOEXCEPT(std::declval<const T&>() >= std::declval<const U&>());
+}
+
+template <class T, class U = T>
+TEST_CONSTEXPR_CXX14 void AssertComparisonsReturnBool() {
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() == std::declval<const U&>()), bool);
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() != std::declval<const U&>()), bool);
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() <  std::declval<const U&>()), bool);
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() <= std::declval<const U&>()), bool);
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() >  std::declval<const U&>()), bool);
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() >= std::declval<const U&>()), bool);
+}
+
+template <class T, class U = T>
+void AssertComparisonsConvertibleToBool()
+{
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() == std::declval<const U&>()), bool>::value), "");
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() != std::declval<const U&>()), bool>::value), "");
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() <  std::declval<const U&>()), bool>::value), "");
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() <= std::declval<const U&>()), bool>::value), "");
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() >  std::declval<const U&>()), bool>::value), "");
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() >= std::declval<const U&>()), bool>::value), "");
+}
+
+#if TEST_STD_VER > 17
+template <class T, class U = T>
+constexpr void AssertOrderAreNoexcept() {
+    AssertComparisonsAreNoexcept<T, U>();
+    ASSERT_NOEXCEPT(std::declval<const T&>() <=> std::declval<const U&>());
+}
+
+template <class Order, class T, class U = T>
+constexpr void AssertOrderReturn() {
+    AssertComparisonsReturnBool<T, U>();
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() <=> std::declval<const U&>()), Order);
+}
+
+template <class Order, class T, class U = T>
+TEST_NODISCARD constexpr bool testOrder(const T& t1, const U& t2, Order order) {
+    bool equal   = order == Order::equivalent;
+    bool less    = order == Order::less;
+    bool greater = order == Order::greater;
+
+    return (t1 <=> t2 == order) && testComparisonsComplete(t1, t2, equal, less, greater);
+}
+
+template <class T, class Param>
+TEST_NODISCARD constexpr bool testOrderValues(Param val1, Param val2) {
+  return testOrder(T(val1), T(val2), val1 <=> val2);
+}
+
+#endif
+
+//  Test all two comparison operations for sanity
+template <class T, class U = T>
+TEST_NODISCARD TEST_CONSTEXPR_CXX14 bool testEquality(const T& t1, const U& t2, bool isEqual)
+{
+    if (isEqual)
+        {
+        if (!(t1 == t2)) return false;
+        if (!(t2 == t1)) return false;
+        if ( (t1 != t2)) return false;
+        if ( (t2 != t1)) return false;
+        }
+    else /* not equal */
+        {
+        if ( (t1 == t2)) return false;
+        if ( (t2 == t1)) return false;
+        if (!(t1 != t2)) return false;
+        if (!(t2 != t1)) return false;
+        }
+
+    return true;
+}
+
+//  Easy call when you can init from something already comparable.
+template <class T, class Param>
+TEST_NODISCARD TEST_CONSTEXPR_CXX14 bool testEqualityValues(Param val1, Param val2)
+{
+    const bool isEqual = val1 == val2;
+
+    return testEquality(T(val1), T(val2), isEqual);
+}
+
+template <class T, class U = T>
+void AssertEqualityAreNoexcept()
+{
+    ASSERT_NOEXCEPT(std::declval<const T&>() == std::declval<const U&>());
+    ASSERT_NOEXCEPT(std::declval<const T&>() != std::declval<const U&>());
+}
+
+template <class T, class U = T>
+void AssertEqualityReturnBool()
+{
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() == std::declval<const U&>()), bool);
+    ASSERT_SAME_TYPE(decltype(std::declval<const T&>() != std::declval<const U&>()), bool);
+}
+
+
+template <class T, class U = T>
+void AssertEqualityConvertibleToBool()
+{
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() == std::declval<const U&>()), bool>::value), "");
+    static_assert((std::is_convertible<decltype(std::declval<const T&>() != std::declval<const U&>()), bool>::value), "");
+}
+
+struct LessAndEqComp {
+  int value;
+
+  TEST_CONSTEXPR_CXX14 LessAndEqComp(int v) : value(v) {}
+
+  friend TEST_CONSTEXPR_CXX14 bool operator<(const LessAndEqComp& lhs, const LessAndEqComp& rhs) {
+    return lhs.value < rhs.value;
+  }
+
+  friend TEST_CONSTEXPR_CXX14 bool operator==(const LessAndEqComp& lhs, const LessAndEqComp& rhs) {
+    return lhs.value == rhs.value;
+  }
+};
+#endif // TEST_COMPARISONS_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_constexpr_container.h b/app/src/main/cpp/libcxx/test/support/test_constexpr_container.h
new file mode 100644
index 0000000..092f8b6
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_constexpr_container.h
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_CONSTEXPR_CONTAINER_H
+#define SUPPORT_TEST_CONSTEXPR_CONTAINER_H
+
+// A dummy container with enough constexpr support to test the standard
+// insert iterators, such as `back_insert_iterator`.
+
+#include <algorithm>
+#include <cassert>
+#include <utility>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER >= 14
+
+template<class T, int N>
+class ConstexprFixedCapacityDeque {
+    T data_[N];
+    int size_ = 0;
+public:
+    using value_type = T;
+    using iterator = T *;
+    using const_iterator = T const *;
+
+    constexpr ConstexprFixedCapacityDeque() = default;
+    constexpr iterator begin() { return data_; }
+    constexpr iterator end() { return data_ + size_; }
+    constexpr const_iterator begin() const { return data_; }
+    constexpr const_iterator end() const { return data_ + size_; }
+    constexpr size_t size() const { return size_; }
+    constexpr const T& front() const { assert(size_ >= 1); return data_[0]; }
+    constexpr const T& back() const { assert(size_ >= 1); return data_[size_-1]; }
+
+    constexpr iterator insert(const_iterator pos, T t) {
+        int i = static_cast<int>(pos - data_);
+        if (i != size_) {
+            std::move_backward(data_ + i, data_ + size_, data_ + size_ + 1);
+        }
+        data_[i] = std::move(t);
+        size_ += 1;
+        return data_ + i;
+    }
+
+    constexpr void push_back(T t) { insert(end(), std::move(t)); }
+    constexpr void push_front(T t) { insert(begin(), std::move(t)); }
+};
+
+#endif // TEST_STD_VER >= 14
+
+#endif // SUPPORT_TEST_CONSTEXPR_CONTAINER_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_convertible.h b/app/src/main/cpp/libcxx/test/support/test_convertible.h
new file mode 100644
index 0000000..becbb2b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_convertible.h
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_CONVERTIBLE_H
+#define SUPPORT_TEST_CONVERTIBLE_H
+
+// "test_convertible<Tp, Args...>()" is a metafunction used to check if 'Tp'
+// is implicitly convertible from 'Args...' for any number of arguments,
+// Unlike 'std::is_convertible' which only allows checking for single argument
+// conversions.
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER < 11
+#error test_convertible.h requires C++11 or newer
+#endif
+
+namespace detail {
+    template <class Tp> void eat_type(Tp);
+
+    template <class Tp, class ...Args>
+    constexpr auto test_convertible_imp(int)
+        -> decltype(eat_type<Tp>({std::declval<Args>()...}), true)
+    { return true; }
+
+    template <class Tp, class ...Args>
+    constexpr auto test_convertible_imp(long) -> bool { return false; }
+}
+
+template <class Tp, class ...Args>
+constexpr bool test_convertible()
+{ return detail::test_convertible_imp<Tp, Args...>(0); }
+
+#endif // SUPPORT_TEST_CONVERTIBLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_format_context.h b/app/src/main/cpp/libcxx/test/support/test_format_context.h
new file mode 100644
index 0000000..d7d38b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_format_context.h
@@ -0,0 +1,63 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_FORMAT_CONTEXT_HPP
+#define SUPPORT_TEST_FORMAT_CONTEXT_HPP
+
+/**
+ * @file Helper functions to create a @ref std::basic_format_context.
+ *
+ * Since the standard doesn't specify how a @ref std::basic_format_context is
+ * constructed this is implementation defined. To make the public API tests of
+ * the class generic this header defines helper functions to create the
+ * required object.
+ *
+ * @note This requires every standard library implementation to write their own
+ * helper function. Vendors are encouraged to file a review at
+ * https://reviews.llvm.org/ so their specific implementation can be part of
+ * this file.
+ */
+
+#include "test_macros.h"
+
+#if TEST_STD_VER < 20
+#error "The format header requires at least C++20"
+#endif
+
+#include <format>
+
+#ifndef TEST_HAS_NO_LOCALIZATION
+#  include <locale>
+#endif
+
+#ifdef _LIBCPP_VERSION
+
+/** Creates a std::basic_format_context as-if the formatting function takes no locale. */
+template <class OutIt, class CharT>
+std::basic_format_context<OutIt, CharT> test_format_context_create(
+    OutIt out_it,
+    std::basic_format_args<std::basic_format_context<OutIt, CharT>> args) {
+  return std::__format_context_create(std::move(out_it), args);
+}
+
+#  ifndef TEST_HAS_NO_LOCALIZATION
+/** Creates a std::basic_format_context as-if the formatting function takes locale. */
+template <class OutIt, class CharT>
+std::basic_format_context<OutIt, CharT> test_format_context_create(
+    OutIt out_it,
+    std::basic_format_args<std::basic_format_context<OutIt, CharT>> args,
+    std::locale loc) {
+  return std::__format_context_create(std::move(out_it), args, std::move(loc));
+}
+#  endif // TEST_HAS_NO_LOCALIZATION
+#else    // _LIBCPP_VERSION
+#  error "Please create a vendor specific version of the test functions and file a review at https://reviews.llvm.org/"
+#endif // _LIBCPP_VERSION
+
+#endif // SUPPORT_TEST_FORMAT_CONTEXT_HPP
diff --git a/app/src/main/cpp/libcxx/test/support/test_format_string.h b/app/src/main/cpp/libcxx/test/support/test_format_string.h
new file mode 100644
index 0000000..49e94c7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_format_string.h
@@ -0,0 +1,48 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_FORMAT_STRING_HPP
+#define SUPPORT_TEST_FORMAT_STRING_HPP
+
+#include <concepts>
+#include <format>
+#include <type_traits>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER < 20
+#  error "The format header requires at least C++20"
+#endif
+
+// Wrapper for basic_format_string.
+//
+// This layer of indirection is used since it's not possible to use
+// std::basic_format_string<CharT, Args...> in the test function directly.
+//
+// In C++20 the basic-format-string was an exposition only type. In C++23 is
+// has been replaced with basic_format_string. Both libc++ and MSVC STL offer
+// it as an extension in C++20.
+#if TEST_STD_VER > 20 || defined(_LIBCPP_VERSION) || defined(_MSVC_STL_VERSION)
+#  ifndef TEST_HAS_NO_WIDE_CHARACTERS
+template <class CharT, class... Args>
+using test_format_string =
+    std::conditional_t<std::same_as<CharT, char>, std::format_string<Args...>, std::wformat_string<Args...>>;
+#  else
+template <class CharT, class... Args>
+using test_format_string = std::format_string<Args...>;
+#  endif
+
+#else // TEST_STD_VER > 20 || defined(_LIBCPP_VERSION) || defined( _MSVC_STL_VERSION)
+
+#  error
+"Please create a vendor specific version of the test typedef and file a review at https://reviews.llvm.org/"
+
+#endif // TEST_STD_VER > 20 || defined(_LIBCPP_VERSION) || defined( _MSVC_STL_VERSION)
+
+#endif // SUPPORT_TEST_FORMAT_STRING_HPP
diff --git a/app/src/main/cpp/libcxx/test/support/test_iterators.h b/app/src/main/cpp/libcxx/test/support/test_iterators.h
new file mode 100644
index 0000000..588a24f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_iterators.h
@@ -0,0 +1,1440 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_ITERATORS_H
+#define SUPPORT_TEST_ITERATORS_H
+
+#include <cassert>
+#include <concepts>
+#include <iterator>
+#include <ranges>
+#include <stdexcept>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+#include "type_algorithms.h"
+
+
+// This iterator meets C++20's Cpp17OutputIterator requirements, as described
+// in Table 90 ([output.iterators]).
+template <class It>
+class cpp17_output_iterator
+{
+    It it_;
+
+    template <class U> friend class cpp17_output_iterator;
+public:
+    typedef          std::output_iterator_tag                  iterator_category;
+    typedef void                                               value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    TEST_CONSTEXPR explicit cpp17_output_iterator(It it) : it_(std::move(it)) {}
+
+    template <class U>
+    TEST_CONSTEXPR cpp17_output_iterator(const cpp17_output_iterator<U>& u) : it_(u.it_) {}
+
+    template <class U, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    TEST_CONSTEXPR_CXX14 cpp17_output_iterator(cpp17_output_iterator<U>&& u) : it_(u.it_) { u.it_ = U(); }
+
+    TEST_CONSTEXPR reference operator*() const {return *it_;}
+
+    TEST_CONSTEXPR_CXX14 cpp17_output_iterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 cpp17_output_iterator operator++(int) {return cpp17_output_iterator(it_++);}
+
+    friend TEST_CONSTEXPR It base(const cpp17_output_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+#if TEST_STD_VER > 14
+template <class It>
+cpp17_output_iterator(It) -> cpp17_output_iterator<It>;
+#endif
+
+#if TEST_STD_VER > 17
+   static_assert(std::output_iterator<cpp17_output_iterator<int*>, int>);
+#endif
+
+// This iterator meets C++20's Cpp17InputIterator requirements, as described
+// in Table 89 ([input.iterators]).
+template <class It, class ItTraits = It>
+class cpp17_input_iterator
+{
+    typedef std::iterator_traits<ItTraits> Traits;
+    It it_;
+
+    template <class U, class T> friend class cpp17_input_iterator;
+public:
+    typedef          std::input_iterator_tag                   iterator_category;
+    typedef typename Traits::value_type                        value_type;
+    typedef typename Traits::difference_type                   difference_type;
+    typedef It                                                 pointer;
+    typedef typename Traits::reference                         reference;
+
+    TEST_CONSTEXPR explicit cpp17_input_iterator(It it) : it_(it) {}
+
+    template <class U, class T>
+    TEST_CONSTEXPR cpp17_input_iterator(const cpp17_input_iterator<U, T>& u) : it_(u.it_) {}
+
+    template <class U, class T, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    TEST_CONSTEXPR_CXX14 cpp17_input_iterator(cpp17_input_iterator<U, T>&& u) : it_(u.it_) { u.it_ = U(); }
+
+    TEST_CONSTEXPR reference operator*() const {return *it_;}
+
+    TEST_CONSTEXPR_CXX14 cpp17_input_iterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 cpp17_input_iterator operator++(int) {return cpp17_input_iterator(it_++);}
+
+    friend TEST_CONSTEXPR bool operator==(const cpp17_input_iterator& x, const cpp17_input_iterator& y) {return x.it_ == y.it_;}
+    friend TEST_CONSTEXPR bool operator!=(const cpp17_input_iterator& x, const cpp17_input_iterator& y) {return x.it_ != y.it_;}
+
+    friend TEST_CONSTEXPR It base(const cpp17_input_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+#if TEST_STD_VER > 14
+template <class It>
+cpp17_input_iterator(It) -> cpp17_input_iterator<It>;
+#endif
+
+#if TEST_STD_VER > 17
+   static_assert(std::input_iterator<cpp17_input_iterator<int*>>);
+#endif
+
+template <class It>
+class forward_iterator
+{
+    It it_;
+
+    template <class U> friend class forward_iterator;
+public:
+    typedef          std::forward_iterator_tag                 iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    TEST_CONSTEXPR forward_iterator() : it_() {}
+    TEST_CONSTEXPR explicit forward_iterator(It it) : it_(it) {}
+
+    template <class U>
+    TEST_CONSTEXPR forward_iterator(const forward_iterator<U>& u) : it_(u.it_) {}
+
+    template <class U, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    TEST_CONSTEXPR_CXX14 forward_iterator(forward_iterator<U>&& other) : it_(other.it_) { other.it_ = U(); }
+
+    TEST_CONSTEXPR reference operator*() const {return *it_;}
+
+    TEST_CONSTEXPR_CXX14 forward_iterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 forward_iterator operator++(int) {return forward_iterator(it_++);}
+
+    friend TEST_CONSTEXPR bool operator==(const forward_iterator& x, const forward_iterator& y) {return x.it_ == y.it_;}
+    friend TEST_CONSTEXPR bool operator!=(const forward_iterator& x, const forward_iterator& y) {return x.it_ != y.it_;}
+
+    friend TEST_CONSTEXPR It base(const forward_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+#if TEST_STD_VER > 14
+template <class It>
+forward_iterator(It) -> forward_iterator<It>;
+#endif
+
+template <class It>
+class bidirectional_iterator
+{
+    It it_;
+
+    template <class U> friend class bidirectional_iterator;
+public:
+    typedef          std::bidirectional_iterator_tag           iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    TEST_CONSTEXPR bidirectional_iterator() : it_() {}
+    TEST_CONSTEXPR explicit bidirectional_iterator(It it) : it_(it) {}
+
+    template <class U>
+    TEST_CONSTEXPR bidirectional_iterator(const bidirectional_iterator<U>& u) : it_(u.it_) {}
+
+    template <class U, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    TEST_CONSTEXPR_CXX14 bidirectional_iterator(bidirectional_iterator<U>&& u) : it_(u.it_) { u.it_ = U(); }
+
+    TEST_CONSTEXPR reference operator*() const {return *it_;}
+
+    TEST_CONSTEXPR_CXX14 bidirectional_iterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 bidirectional_iterator& operator--() {--it_; return *this;}
+    TEST_CONSTEXPR_CXX14 bidirectional_iterator operator++(int) {return bidirectional_iterator(it_++);}
+    TEST_CONSTEXPR_CXX14 bidirectional_iterator operator--(int) {return bidirectional_iterator(it_--);}
+
+    friend TEST_CONSTEXPR bool operator==(const bidirectional_iterator& x, const bidirectional_iterator& y) {return x.it_ == y.it_;}
+    friend TEST_CONSTEXPR bool operator!=(const bidirectional_iterator& x, const bidirectional_iterator& y) {return x.it_ != y.it_;}
+
+    friend TEST_CONSTEXPR It base(const bidirectional_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+#if TEST_STD_VER > 14
+template <class It>
+bidirectional_iterator(It) -> bidirectional_iterator<It>;
+#endif
+
+template <class It>
+class random_access_iterator
+{
+    It it_;
+
+    template <class U> friend class random_access_iterator;
+public:
+    typedef          std::random_access_iterator_tag           iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+
+    TEST_CONSTEXPR random_access_iterator() : it_() {}
+    TEST_CONSTEXPR explicit random_access_iterator(It it) : it_(it) {}
+
+    template <class U>
+    TEST_CONSTEXPR random_access_iterator(const random_access_iterator<U>& u) : it_(u.it_) {}
+
+    template <class U, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    TEST_CONSTEXPR_CXX14 random_access_iterator(random_access_iterator<U>&& u) : it_(u.it_) { u.it_ = U(); }
+
+    TEST_CONSTEXPR_CXX14 reference operator*() const {return *it_;}
+    TEST_CONSTEXPR_CXX14 reference operator[](difference_type n) const {return it_[n];}
+
+    TEST_CONSTEXPR_CXX14 random_access_iterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 random_access_iterator& operator--() {--it_; return *this;}
+    TEST_CONSTEXPR_CXX14 random_access_iterator operator++(int) {return random_access_iterator(it_++);}
+    TEST_CONSTEXPR_CXX14 random_access_iterator operator--(int) {return random_access_iterator(it_--);}
+
+    TEST_CONSTEXPR_CXX14 random_access_iterator& operator+=(difference_type n) {it_ += n; return *this;}
+    TEST_CONSTEXPR_CXX14 random_access_iterator& operator-=(difference_type n) {it_ -= n; return *this;}
+    friend TEST_CONSTEXPR_CXX14 random_access_iterator operator+(random_access_iterator x, difference_type n) {x += n; return x;}
+    friend TEST_CONSTEXPR_CXX14 random_access_iterator operator+(difference_type n, random_access_iterator x) {x += n; return x;}
+    friend TEST_CONSTEXPR_CXX14 random_access_iterator operator-(random_access_iterator x, difference_type n) {x -= n; return x;}
+    friend TEST_CONSTEXPR difference_type operator-(random_access_iterator x, random_access_iterator y) {return x.it_ - y.it_;}
+
+    friend TEST_CONSTEXPR bool operator==(const random_access_iterator& x, const random_access_iterator& y) {return x.it_ == y.it_;}
+    friend TEST_CONSTEXPR bool operator!=(const random_access_iterator& x, const random_access_iterator& y) {return x.it_ != y.it_;}
+    friend TEST_CONSTEXPR bool operator< (const random_access_iterator& x, const random_access_iterator& y) {return x.it_ <  y.it_;}
+    friend TEST_CONSTEXPR bool operator<=(const random_access_iterator& x, const random_access_iterator& y) {return x.it_ <= y.it_;}
+    friend TEST_CONSTEXPR bool operator> (const random_access_iterator& x, const random_access_iterator& y) {return x.it_ >  y.it_;}
+    friend TEST_CONSTEXPR bool operator>=(const random_access_iterator& x, const random_access_iterator& y) {return x.it_ >= y.it_;}
+
+    friend TEST_CONSTEXPR It base(const random_access_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+#if TEST_STD_VER > 14
+template <class It>
+random_access_iterator(It) -> random_access_iterator<It>;
+#endif
+
+#if TEST_STD_VER > 17
+
+template <std::random_access_iterator It>
+class cpp20_random_access_iterator {
+  It it_;
+
+  template <std::random_access_iterator>
+  friend class cpp20_random_access_iterator;
+
+public:
+  using iterator_category = std::input_iterator_tag;
+  using iterator_concept  = std::random_access_iterator_tag;
+  using value_type        = typename std::iterator_traits<It>::value_type;
+  using difference_type   = typename std::iterator_traits<It>::difference_type;
+
+  constexpr cpp20_random_access_iterator() : it_() {}
+  constexpr explicit cpp20_random_access_iterator(It it) : it_(it) {}
+
+  template <class U>
+  constexpr cpp20_random_access_iterator(const cpp20_random_access_iterator<U>& u) : it_(u.it_) {}
+
+  template <class U>
+  constexpr cpp20_random_access_iterator(cpp20_random_access_iterator<U>&& u) : it_(u.it_) {
+    u.it_ = U();
+  }
+
+  constexpr decltype(auto) operator*() const { return *it_; }
+  constexpr decltype(auto) operator[](difference_type n) const { return it_[n]; }
+
+  constexpr cpp20_random_access_iterator& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr cpp20_random_access_iterator& operator--() {
+    --it_;
+    return *this;
+  }
+  constexpr cpp20_random_access_iterator operator++(int) { return cpp20_random_access_iterator(it_++); }
+  constexpr cpp20_random_access_iterator operator--(int) { return cpp20_random_access_iterator(it_--); }
+
+  constexpr cpp20_random_access_iterator& operator+=(difference_type n) {
+    it_ += n;
+    return *this;
+  }
+  constexpr cpp20_random_access_iterator& operator-=(difference_type n) {
+    it_ -= n;
+    return *this;
+  }
+  friend constexpr cpp20_random_access_iterator operator+(cpp20_random_access_iterator x, difference_type n) {
+    x += n;
+    return x;
+  }
+  friend constexpr cpp20_random_access_iterator operator+(difference_type n, cpp20_random_access_iterator x) {
+    x += n;
+    return x;
+  }
+  friend constexpr cpp20_random_access_iterator operator-(cpp20_random_access_iterator x, difference_type n) {
+    x -= n;
+    return x;
+  }
+  friend constexpr difference_type operator-(cpp20_random_access_iterator x, cpp20_random_access_iterator y) {
+    return x.it_ - y.it_;
+  }
+
+  friend constexpr bool operator==(const cpp20_random_access_iterator& x, const cpp20_random_access_iterator& y) {
+    return x.it_ == y.it_;
+  }
+  friend constexpr bool operator!=(const cpp20_random_access_iterator& x, const cpp20_random_access_iterator& y) {
+    return x.it_ != y.it_;
+  }
+  friend constexpr bool operator<(const cpp20_random_access_iterator& x, const cpp20_random_access_iterator& y) {
+    return x.it_ < y.it_;
+  }
+  friend constexpr bool operator<=(const cpp20_random_access_iterator& x, const cpp20_random_access_iterator& y) {
+    return x.it_ <= y.it_;
+  }
+  friend constexpr bool operator>(const cpp20_random_access_iterator& x, const cpp20_random_access_iterator& y) {
+    return x.it_ > y.it_;
+  }
+  friend constexpr bool operator>=(const cpp20_random_access_iterator& x, const cpp20_random_access_iterator& y) {
+    return x.it_ >= y.it_;
+  }
+
+  friend constexpr It base(const cpp20_random_access_iterator& i) { return i.it_; }
+
+  template <class T>
+  void operator,(T const&) = delete;
+};
+template <class It>
+cpp20_random_access_iterator(It) -> cpp20_random_access_iterator<It>;
+
+static_assert(std::random_access_iterator<cpp20_random_access_iterator<int*>>);
+
+template <class It>
+class contiguous_iterator
+{
+    static_assert(std::is_pointer_v<It>, "Things probably break in this case");
+
+    It it_;
+
+    template <class U> friend class contiguous_iterator;
+public:
+    typedef          std::contiguous_iterator_tag              iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+    typedef typename std::remove_pointer<It>::type             element_type;
+
+    TEST_CONSTEXPR_CXX14 It base() const {return it_;}
+
+    TEST_CONSTEXPR_CXX14 contiguous_iterator() : it_() {}
+    TEST_CONSTEXPR_CXX14 explicit contiguous_iterator(It it) : it_(it) {}
+
+    template <class U>
+    TEST_CONSTEXPR_CXX14 contiguous_iterator(const contiguous_iterator<U>& u) : it_(u.it_) {}
+
+    template <class U, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    constexpr contiguous_iterator(contiguous_iterator<U>&& u) : it_(u.it_) { u.it_ = U(); }
+
+    TEST_CONSTEXPR reference operator*() const {return *it_;}
+    TEST_CONSTEXPR pointer operator->() const {return it_;}
+    TEST_CONSTEXPR reference operator[](difference_type n) const {return it_[n];}
+
+    TEST_CONSTEXPR_CXX14 contiguous_iterator& operator++() {++it_; return *this;}
+    TEST_CONSTEXPR_CXX14 contiguous_iterator& operator--() {--it_; return *this;}
+    TEST_CONSTEXPR_CXX14 contiguous_iterator operator++(int) {return contiguous_iterator(it_++);}
+    TEST_CONSTEXPR_CXX14 contiguous_iterator operator--(int) {return contiguous_iterator(it_--);}
+
+    TEST_CONSTEXPR_CXX14 contiguous_iterator& operator+=(difference_type n) {it_ += n; return *this;}
+    TEST_CONSTEXPR_CXX14 contiguous_iterator& operator-=(difference_type n) {it_ -= n; return *this;}
+    friend TEST_CONSTEXPR_CXX14 contiguous_iterator operator+(contiguous_iterator x, difference_type n) {x += n; return x;}
+    friend TEST_CONSTEXPR_CXX14 contiguous_iterator operator+(difference_type n, contiguous_iterator x) {x += n; return x;}
+    friend TEST_CONSTEXPR_CXX14 contiguous_iterator operator-(contiguous_iterator x, difference_type n) {x -= n; return x;}
+    friend TEST_CONSTEXPR difference_type operator-(contiguous_iterator x, contiguous_iterator y) {return x.it_ - y.it_;}
+
+    friend TEST_CONSTEXPR bool operator==(const contiguous_iterator& x, const contiguous_iterator& y) {return x.it_ == y.it_;}
+    friend TEST_CONSTEXPR bool operator!=(const contiguous_iterator& x, const contiguous_iterator& y) {return x.it_ != y.it_;}
+    friend TEST_CONSTEXPR bool operator< (const contiguous_iterator& x, const contiguous_iterator& y) {return x.it_ <  y.it_;}
+    friend TEST_CONSTEXPR bool operator<=(const contiguous_iterator& x, const contiguous_iterator& y) {return x.it_ <= y.it_;}
+    friend TEST_CONSTEXPR bool operator> (const contiguous_iterator& x, const contiguous_iterator& y) {return x.it_ >  y.it_;}
+    friend TEST_CONSTEXPR bool operator>=(const contiguous_iterator& x, const contiguous_iterator& y) {return x.it_ >= y.it_;}
+
+    friend TEST_CONSTEXPR It base(const contiguous_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+template <class It>
+contiguous_iterator(It) -> contiguous_iterator<It>;
+
+template <class It>
+class three_way_contiguous_iterator
+{
+    static_assert(std::is_pointer_v<It>, "Things probably break in this case");
+
+    It it_;
+
+    template <class U> friend class three_way_contiguous_iterator;
+public:
+    typedef          std::contiguous_iterator_tag              iterator_category;
+    typedef typename std::iterator_traits<It>::value_type      value_type;
+    typedef typename std::iterator_traits<It>::difference_type difference_type;
+    typedef It                                                 pointer;
+    typedef typename std::iterator_traits<It>::reference       reference;
+    typedef typename std::remove_pointer<It>::type             element_type;
+
+    constexpr It base() const {return it_;}
+
+    constexpr three_way_contiguous_iterator() : it_() {}
+    constexpr explicit three_way_contiguous_iterator(It it) : it_(it) {}
+
+    template <class U>
+    constexpr three_way_contiguous_iterator(const three_way_contiguous_iterator<U>& u) : it_(u.it_) {}
+
+    template <class U, class = typename std::enable_if<std::is_default_constructible<U>::value>::type>
+    constexpr three_way_contiguous_iterator(three_way_contiguous_iterator<U>&& u) : it_(u.it_) { u.it_ = U(); }
+
+    constexpr reference operator*() const {return *it_;}
+    constexpr pointer operator->() const {return it_;}
+    constexpr reference operator[](difference_type n) const {return it_[n];}
+
+    constexpr three_way_contiguous_iterator& operator++() {++it_; return *this;}
+    constexpr three_way_contiguous_iterator& operator--() {--it_; return *this;}
+    constexpr three_way_contiguous_iterator operator++(int) {return three_way_contiguous_iterator(it_++);}
+    constexpr three_way_contiguous_iterator operator--(int) {return three_way_contiguous_iterator(it_--);}
+
+    constexpr three_way_contiguous_iterator& operator+=(difference_type n) {it_ += n; return *this;}
+    constexpr three_way_contiguous_iterator& operator-=(difference_type n) {it_ -= n; return *this;}
+    friend constexpr three_way_contiguous_iterator operator+(three_way_contiguous_iterator x, difference_type n) {x += n; return x;}
+    friend constexpr three_way_contiguous_iterator operator+(difference_type n, three_way_contiguous_iterator x) {x += n; return x;}
+    friend constexpr three_way_contiguous_iterator operator-(three_way_contiguous_iterator x, difference_type n) {x -= n; return x;}
+    friend constexpr difference_type operator-(three_way_contiguous_iterator x, three_way_contiguous_iterator y) {return x.it_ - y.it_;}
+
+    friend constexpr auto operator<=>(const three_way_contiguous_iterator& x, const three_way_contiguous_iterator& y) {return x.it_ <=> y.it_;}
+    friend constexpr bool operator==(const three_way_contiguous_iterator& x, const three_way_contiguous_iterator& y) {return x.it_ == y.it_;}
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+template <class It>
+three_way_contiguous_iterator(It) -> three_way_contiguous_iterator<It>;
+#endif // TEST_STD_VER > 17
+
+template <class Iter> // ADL base() for everything else (including pointers)
+TEST_CONSTEXPR Iter base(Iter i) { return i; }
+
+template <typename T>
+struct ThrowingIterator {
+    typedef std::bidirectional_iterator_tag iterator_category;
+    typedef ptrdiff_t                       difference_type;
+    typedef const T                         value_type;
+    typedef const T *                       pointer;
+    typedef const T &                       reference;
+
+    enum ThrowingAction { TAIncrement, TADecrement, TADereference, TAAssignment, TAComparison };
+
+    TEST_CONSTEXPR ThrowingIterator()
+        : begin_(nullptr), end_(nullptr), current_(nullptr), action_(TADereference), index_(0) {}
+    TEST_CONSTEXPR explicit ThrowingIterator(const T* first, const T* last, int index = 0,
+                                                   ThrowingAction action = TADereference)
+        : begin_(first), end_(last), current_(first), action_(action), index_(index) {}
+    TEST_CONSTEXPR ThrowingIterator(const ThrowingIterator &rhs)
+        : begin_(rhs.begin_), end_(rhs.end_), current_(rhs.current_), action_(rhs.action_), index_(rhs.index_) {}
+
+    TEST_CONSTEXPR_CXX14 ThrowingIterator& operator=(const ThrowingIterator& rhs) {
+        if (action_ == TAAssignment && --index_ < 0) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw std::runtime_error("throw from iterator assignment");
+#else
+            assert(false);
+#endif
+        }
+        begin_ = rhs.begin_;
+        end_ = rhs.end_;
+        current_ = rhs.current_;
+        action_ = rhs.action_;
+        index_ = rhs.index_;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX14 reference operator*() const {
+        if (action_ == TADereference && --index_ < 0) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw std::runtime_error("throw from iterator dereference");
+#else
+            assert(false);
+#endif
+        }
+        return *current_;
+    }
+
+    TEST_CONSTEXPR_CXX14 ThrowingIterator& operator++() {
+        if (action_ == TAIncrement && --index_ < 0) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw std::runtime_error("throw from iterator increment");
+#else
+            assert(false);
+#endif
+        }
+        ++current_;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX14 ThrowingIterator operator++(int) {
+        ThrowingIterator temp = *this;
+        ++(*this);
+        return temp;
+    }
+
+    TEST_CONSTEXPR_CXX14 ThrowingIterator& operator--() {
+        if (action_ == TADecrement && --index_ < 0) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw std::runtime_error("throw from iterator decrement");
+#else
+            assert(false);
+#endif
+        }
+        --current_;
+        return *this;
+    }
+
+    TEST_CONSTEXPR_CXX14 ThrowingIterator operator--(int) {
+        ThrowingIterator temp = *this;
+        --(*this);
+        return temp;
+    }
+
+    TEST_CONSTEXPR_CXX14 friend bool operator==(const ThrowingIterator& a, const ThrowingIterator& b) {
+        if (a.action_ == TAComparison && --a.index_ < 0) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw std::runtime_error("throw from iterator comparison");
+#else
+            assert(false);
+#endif
+        }
+        bool atEndL = a.current_ == a.end_;
+        bool atEndR = b.current_ == b.end_;
+        if (atEndL != atEndR) return false;  // one is at the end (or empty), the other is not.
+        if (atEndL) return true;             // both are at the end (or empty)
+        return a.current_ == b.current_;
+    }
+
+    TEST_CONSTEXPR friend bool operator!=(const ThrowingIterator& a, const ThrowingIterator& b) {
+        return !(a == b);
+    }
+
+    template <class T2>
+    void operator,(T2 const &) = delete;
+
+private:
+    const T* begin_;
+    const T* end_;
+    const T* current_;
+    ThrowingAction action_;
+    mutable int index_;
+};
+
+template <typename T>
+struct NonThrowingIterator {
+    typedef std::bidirectional_iterator_tag iterator_category;
+    typedef ptrdiff_t                       difference_type;
+    typedef const T                         value_type;
+    typedef const T *                       pointer;
+    typedef const T &                       reference;
+
+    NonThrowingIterator()
+        : begin_(nullptr), end_(nullptr), current_(nullptr) {}
+    explicit NonThrowingIterator(const T *first, const T *last)
+        : begin_(first), end_(last), current_(first) {}
+    NonThrowingIterator(const NonThrowingIterator& rhs)
+        : begin_(rhs.begin_), end_(rhs.end_), current_(rhs.current_) {}
+
+    NonThrowingIterator& operator=(const NonThrowingIterator& rhs) TEST_NOEXCEPT {
+        begin_ = rhs.begin_;
+        end_ = rhs.end_;
+        current_ = rhs.current_;
+        return *this;
+    }
+
+    reference operator*() const TEST_NOEXCEPT {
+        return *current_;
+    }
+
+    NonThrowingIterator& operator++() TEST_NOEXCEPT {
+        ++current_;
+        return *this;
+    }
+
+    NonThrowingIterator operator++(int) TEST_NOEXCEPT {
+        NonThrowingIterator temp = *this;
+        ++(*this);
+        return temp;
+    }
+
+    NonThrowingIterator & operator--() TEST_NOEXCEPT {
+        --current_;
+        return *this;
+    }
+
+    NonThrowingIterator operator--(int) TEST_NOEXCEPT {
+        NonThrowingIterator temp = *this;
+        --(*this);
+        return temp;
+    }
+
+    friend bool operator==(const NonThrowingIterator& a, const NonThrowingIterator& b) TEST_NOEXCEPT {
+        bool atEndL = a.current_ == a.end_;
+        bool atEndR = b.current_ == b.end_;
+        if (atEndL != atEndR) return false;  // one is at the end (or empty), the other is not.
+        if (atEndL) return true;             // both are at the end (or empty)
+        return a.current_ == b.current_;
+    }
+
+    friend bool operator!=(const NonThrowingIterator& a, const NonThrowingIterator& b) TEST_NOEXCEPT {
+        return !(a == b);
+    }
+
+    template <class T2>
+    void operator,(T2 const &) = delete;
+
+private:
+    const T *begin_;
+    const T *end_;
+    const T *current_;
+};
+
+#if TEST_STD_VER > 17
+
+template <class It>
+class cpp20_input_iterator
+{
+    It it_;
+
+public:
+    using value_type = std::iter_value_t<It>;
+    using difference_type = std::iter_difference_t<It>;
+    using iterator_concept = std::input_iterator_tag;
+
+    constexpr explicit cpp20_input_iterator(It it) : it_(it) {}
+    cpp20_input_iterator(cpp20_input_iterator&&) = default;
+    cpp20_input_iterator& operator=(cpp20_input_iterator&&) = default;
+    constexpr decltype(auto) operator*() const { return *it_; }
+    constexpr cpp20_input_iterator& operator++() { ++it_; return *this; }
+    constexpr void operator++(int) { ++it_; }
+
+    friend constexpr It base(const cpp20_input_iterator& i) { return i.it_; }
+
+    template <class T>
+    void operator,(T const &) = delete;
+};
+template <class It>
+cpp20_input_iterator(It) -> cpp20_input_iterator<It>;
+
+static_assert(std::input_iterator<cpp20_input_iterator<int*>>);
+
+template<std::input_or_output_iterator>
+struct iter_value_or_void { using type = void; };
+
+template<std::input_iterator I>
+struct iter_value_or_void<I> {
+    using type = std::iter_value_t<I>;
+};
+
+template <class It>
+class cpp20_output_iterator {
+  It it_;
+
+public:
+  using difference_type = std::iter_difference_t<It>;
+
+  constexpr explicit cpp20_output_iterator(It it) : it_(it) {}
+  cpp20_output_iterator(cpp20_output_iterator&&) = default;
+  cpp20_output_iterator& operator=(cpp20_output_iterator&&) = default;
+
+  constexpr decltype(auto) operator*() const { return *it_; }
+  constexpr cpp20_output_iterator& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr cpp20_output_iterator operator++(int) { return cpp20_output_iterator(it_++); }
+
+  friend constexpr It base(const cpp20_output_iterator& i) { return i.it_; }
+
+  template <class T>
+  void operator,(T const&) = delete;
+};
+template <class It>
+cpp20_output_iterator(It) -> cpp20_output_iterator<It>;
+
+static_assert(std::output_iterator<cpp20_output_iterator<int*>, int>);
+
+#  if TEST_STD_VER >= 20
+
+// An `input_iterator` that can be used in a `std::ranges::common_range`
+template <class Base>
+struct common_input_iterator {
+  Base it_;
+
+  using value_type       = std::iter_value_t<Base>;
+  using difference_type  = std::intptr_t;
+  using iterator_concept = std::input_iterator_tag;
+
+  constexpr common_input_iterator() = default;
+  constexpr explicit common_input_iterator(Base it) : it_(it) {}
+
+  constexpr common_input_iterator& operator++() {
+    ++it_;
+    return *this;
+  }
+  constexpr void operator++(int) { ++it_; }
+
+  constexpr decltype(auto) operator*() const { return *it_; }
+
+  friend constexpr bool operator==(common_input_iterator const&, common_input_iterator const&) = default;
+};
+
+#  endif // TEST_STD_VER >= 20
+
+// Iterator adaptor that counts the number of times the iterator has had a successor/predecessor
+// operation called. Has two recorders:
+// * `stride_count`, which records the total number of calls to an op++, op--, op+=, or op-=.
+// * `stride_displacement`, which records the displacement of the calls. This means that both
+//   op++/op+= will increase the displacement counter by 1, and op--/op-= will decrease the
+//   displacement counter by 1.
+template <class It>
+class stride_counting_iterator {
+public:
+    using value_type = typename iter_value_or_void<It>::type;
+    using difference_type = std::iter_difference_t<It>;
+    using iterator_concept =
+        std::conditional_t<std::contiguous_iterator<It>,    std::contiguous_iterator_tag,
+        std::conditional_t<std::random_access_iterator<It>, std::random_access_iterator_tag,
+        std::conditional_t<std::bidirectional_iterator<It>, std::bidirectional_iterator_tag,
+        std::conditional_t<std::forward_iterator<It>,       std::forward_iterator_tag,
+        std::conditional_t<std::input_iterator<It>,         std::input_iterator_tag,
+        /* else */                                          std::output_iterator_tag
+    >>>>>;
+
+    stride_counting_iterator() requires std::default_initializable<It> = default;
+
+    constexpr explicit stride_counting_iterator(It const& it) : base_(base(it)) { }
+
+    friend constexpr It base(stride_counting_iterator const& it) { return It(it.base_); }
+
+    constexpr difference_type stride_count() const { return stride_count_; }
+
+    constexpr difference_type stride_displacement() const { return stride_displacement_; }
+
+    constexpr decltype(auto) operator*() const { return *It(base_); }
+
+    constexpr decltype(auto) operator[](difference_type n) const { return It(base_)[n]; }
+
+    constexpr stride_counting_iterator& operator++() {
+        It tmp(base_);
+        base_ = base(++tmp);
+        ++stride_count_;
+        ++stride_displacement_;
+        return *this;
+    }
+
+    constexpr void operator++(int) { ++*this; }
+
+    constexpr stride_counting_iterator operator++(int)
+        requires std::forward_iterator<It>
+    {
+        auto temp = *this;
+        ++*this;
+        return temp;
+    }
+
+    constexpr stride_counting_iterator& operator--()
+        requires std::bidirectional_iterator<It>
+    {
+        It tmp(base_);
+        base_ = base(--tmp);
+        ++stride_count_;
+        --stride_displacement_;
+        return *this;
+    }
+
+    constexpr stride_counting_iterator operator--(int)
+        requires std::bidirectional_iterator<It>
+    {
+        auto temp = *this;
+        --*this;
+        return temp;
+    }
+
+    constexpr stride_counting_iterator& operator+=(difference_type const n)
+        requires std::random_access_iterator<It>
+    {
+        It tmp(base_);
+        base_ = base(tmp += n);
+        ++stride_count_;
+        ++stride_displacement_;
+        return *this;
+    }
+
+    constexpr stride_counting_iterator& operator-=(difference_type const n)
+        requires std::random_access_iterator<It>
+    {
+        It tmp(base_);
+        base_ = base(tmp -= n);
+        ++stride_count_;
+        --stride_displacement_;
+        return *this;
+    }
+
+    friend constexpr stride_counting_iterator operator+(stride_counting_iterator it, difference_type n)
+        requires std::random_access_iterator<It>
+    {
+        return it += n;
+    }
+
+    friend constexpr stride_counting_iterator operator+(difference_type n, stride_counting_iterator it)
+        requires std::random_access_iterator<It>
+    {
+        return it += n;
+    }
+
+    friend constexpr stride_counting_iterator operator-(stride_counting_iterator it, difference_type n)
+        requires std::random_access_iterator<It>
+    {
+        return it -= n;
+    }
+
+    friend constexpr difference_type operator-(stride_counting_iterator const& x, stride_counting_iterator const& y)
+        requires std::sized_sentinel_for<It, It>
+    {
+        return base(x) - base(y);
+    }
+
+    constexpr bool operator==(stride_counting_iterator const& other) const
+        requires std::sentinel_for<It, It>
+    {
+        return It(base_) == It(other.base_);
+    }
+
+    friend constexpr bool operator<(stride_counting_iterator const& x, stride_counting_iterator const& y)
+        requires std::random_access_iterator<It>
+    {
+        return It(x.base_) < It(y.base_);
+    }
+
+    friend constexpr bool operator>(stride_counting_iterator const& x, stride_counting_iterator const& y)
+        requires std::random_access_iterator<It>
+    {
+        return It(x.base_) > It(y.base_);
+    }
+
+    friend constexpr bool operator<=(stride_counting_iterator const& x, stride_counting_iterator const& y)
+        requires std::random_access_iterator<It>
+    {
+        return It(x.base_) <= It(y.base_);
+    }
+
+    friend constexpr bool operator>=(stride_counting_iterator const& x, stride_counting_iterator const& y)
+        requires std::random_access_iterator<It>
+    {
+        return It(x.base_) >= It(y.base_);
+    }
+
+    template <class T>
+    void operator,(T const &) = delete;
+
+private:
+    decltype(base(std::declval<It>())) base_;
+    difference_type stride_count_ = 0;
+    difference_type stride_displacement_ = 0;
+};
+template <class It>
+stride_counting_iterator(It) -> stride_counting_iterator<It>;
+
+#endif // TEST_STD_VER > 17
+
+#if TEST_STD_VER > 17
+template <class It>
+class sentinel_wrapper {
+public:
+    explicit sentinel_wrapper() = default;
+    constexpr explicit sentinel_wrapper(const It& it) : base_(base(it)) {}
+    constexpr bool operator==(const It& other) const { return base_ == base(other); }
+    friend constexpr It base(const sentinel_wrapper& s) { return It(s.base_); }
+private:
+    decltype(base(std::declval<It>())) base_;
+};
+template <class It>
+sentinel_wrapper(It) -> sentinel_wrapper<It>;
+
+template <class It>
+class sized_sentinel {
+public:
+    explicit sized_sentinel() = default;
+    constexpr explicit sized_sentinel(const It& it) : base_(base(it)) {}
+    constexpr bool operator==(const It& other) const { return base_ == base(other); }
+    friend constexpr auto operator-(const sized_sentinel& s, const It& i) { return s.base_ - base(i); }
+    friend constexpr auto operator-(const It& i, const sized_sentinel& s) { return base(i) - s.base_; }
+    friend constexpr It base(const sized_sentinel& s) { return It(s.base_); }
+private:
+    decltype(base(std::declval<It>())) base_;
+};
+template <class It>
+sized_sentinel(It) -> sized_sentinel<It>;
+
+namespace adl {
+
+class Iterator {
+ public:
+  using value_type = int;
+  using reference = int&;
+  using difference_type = ptrdiff_t;
+
+ private:
+  value_type* ptr_ = nullptr;
+  int* iter_moves_ = nullptr;
+  int* iter_swaps_ = nullptr;
+
+  constexpr Iterator(int* p, int* iter_moves, int* iter_swaps)
+    : ptr_(p)
+    , iter_moves_(iter_moves)
+    , iter_swaps_(iter_swaps) {}
+
+ public:
+  constexpr Iterator() = default;
+  static constexpr Iterator TrackMoves(int* p, int& iter_moves) {
+    return Iterator(p, &iter_moves, /*iter_swaps=*/nullptr);
+  }
+  static constexpr Iterator TrackSwaps(int& iter_swaps) {
+    return Iterator(/*p=*/nullptr, /*iter_moves=*/nullptr, &iter_swaps);
+  }
+  static constexpr Iterator TrackSwaps(int* p, int& iter_swaps) {
+    return Iterator(p, /*iter_moves=*/nullptr, &iter_swaps);
+  }
+
+  constexpr int iter_moves() const { assert(iter_moves_); return *iter_moves_; }
+  constexpr int iter_swaps() const { assert(iter_swaps_); return *iter_swaps_; }
+
+  constexpr value_type& operator*() const { return *ptr_; }
+  constexpr reference operator[](difference_type n) const { return ptr_[n]; }
+
+  friend constexpr Iterator operator+(Iterator i, difference_type n) {
+    return Iterator(i.ptr_ + n, i.iter_moves_, i.iter_swaps_);
+  }
+  friend constexpr Iterator operator+(difference_type n, Iterator i) {
+    return i + n;
+  }
+  constexpr Iterator operator-(difference_type n) const {
+    return Iterator(ptr_ - n, iter_moves_, iter_swaps_);
+  }
+  constexpr difference_type operator-(Iterator rhs) const {
+    return ptr_ - rhs.ptr_;
+  }
+  constexpr Iterator& operator+=(difference_type n) {
+    ptr_ += n;
+    return *this;
+  }
+  constexpr Iterator& operator-=(difference_type n) {
+    ptr_ -= n;
+    return *this;
+  }
+
+  constexpr Iterator& operator++() { ++ptr_; return *this; }
+  constexpr Iterator operator++(int) {
+    Iterator prev = *this;
+    ++ptr_;
+    return prev;
+  }
+
+  constexpr Iterator& operator--() { --ptr_; return *this; }
+  constexpr Iterator operator--(int) {
+    Iterator prev = *this;
+    --ptr_;
+    return prev;
+  }
+
+  constexpr friend void iter_swap(Iterator a, Iterator b) {
+    std::swap(a.ptr_, b.ptr_);
+    if (a.iter_swaps_) {
+      ++(*a.iter_swaps_);
+    }
+  }
+
+  constexpr friend value_type&& iter_move(Iterator iter) {
+    if (iter.iter_moves_) {
+      ++(*iter.iter_moves_);
+    }
+    return std::move(*iter);
+  }
+
+  constexpr friend bool operator==(const Iterator& lhs, const Iterator& rhs) {
+    return lhs.ptr_ == rhs.ptr_;
+  }
+  constexpr friend auto operator<=>(const Iterator& lhs, const Iterator& rhs) {
+    return lhs.ptr_ <=> rhs.ptr_;
+  }
+};
+
+} // namespace adl
+
+template <class T>
+class rvalue_iterator {
+public:
+  using iterator_category = std::input_iterator_tag;
+  using iterator_concept  = std::random_access_iterator_tag;
+  using difference_type   = std::ptrdiff_t;
+  using reference         = T&&;
+  using value_type        = T;
+
+  rvalue_iterator() = default;
+  constexpr rvalue_iterator(T* it) : it_(it) {}
+
+  constexpr reference operator*() const { return std::move(*it_); }
+
+  constexpr rvalue_iterator& operator++() {
+    ++it_;
+    return *this;
+  }
+
+  constexpr rvalue_iterator operator++(int) {
+    auto tmp = *this;
+    ++it_;
+    return tmp;
+  }
+
+  constexpr rvalue_iterator& operator--() {
+    --it_;
+    return *this;
+  }
+
+  constexpr rvalue_iterator operator--(int) {
+    auto tmp = *this;
+    --it_;
+    return tmp;
+  }
+
+  constexpr rvalue_iterator operator+(difference_type n) const {
+    auto tmp = *this;
+    tmp.it += n;
+    return tmp;
+  }
+
+  constexpr friend rvalue_iterator operator+(difference_type n, rvalue_iterator iter) {
+    iter += n;
+    return iter;
+  }
+
+  constexpr rvalue_iterator operator-(difference_type n) const {
+    auto tmp = *this;
+    tmp.it -= n;
+    return tmp;
+  }
+
+  constexpr difference_type operator-(const rvalue_iterator& other) const { return it_ - other.it_; }
+
+  constexpr rvalue_iterator& operator+=(difference_type n) {
+    it_ += n;
+    return *this;
+  }
+
+  constexpr rvalue_iterator& operator-=(difference_type n) {
+    it_ -= n;
+    return *this;
+  }
+
+  constexpr reference operator[](difference_type n) const { return std::move(it_[n]); }
+
+  auto operator<=>(const rvalue_iterator&) const noexcept = default;
+
+private:
+  T* it_;
+};
+
+template <class T>
+rvalue_iterator(T*) -> rvalue_iterator<T>;
+
+static_assert(std::random_access_iterator<rvalue_iterator<int*>>);
+
+// Proxy
+// ======================================================================
+// Proxy that can wrap a value or a reference. It simulates C++23's tuple
+// but simplified to just hold one argument.
+// Note that unlike tuple, this class deliberately doesn't have special handling
+// of swap to cause a compilation error if it's used in an algorithm that relies
+// on plain swap instead of ranges::iter_swap.
+// This class is useful for testing that if algorithms support proxy iterator
+// properly, i.e. calling ranges::iter_swap and ranges::iter_move instead of
+// plain swap and std::move.
+template <class T>
+struct Proxy;
+
+template <class T>
+inline constexpr bool IsProxy = false;
+
+template <class T>
+inline constexpr bool IsProxy<Proxy<T>> = true;
+
+template <class T>
+struct Proxy {
+  T data;
+
+  constexpr T& getData() & { return data; }
+
+  constexpr const T& getData() const& { return data; }
+
+  constexpr T&& getData() && { return static_cast<T&&>(data); }
+
+  constexpr const T&& getData() const&& { return static_cast<const T&&>(data); }
+
+  template <class U>
+    requires std::constructible_from<T, U&&>
+  constexpr Proxy(U&& u) : data{std::forward<U>(u)} {}
+
+  // This constructor covers conversion from cvref of Proxy<U>, including non-const/const versions of copy/move constructor
+  template <class Other>
+    requires(IsProxy<std::decay_t<Other>> && std::constructible_from<T, decltype(std::declval<Other>().getData())>)
+  constexpr Proxy(Other&& other) : data{std::forward<Other>(other).getData()} {}
+
+  template <class Other>
+    requires(IsProxy<std::decay_t<Other>> && std::assignable_from<T&, decltype(std::declval<Other>().getData())>)
+  constexpr Proxy& operator=(Other&& other) {
+    data = std::forward<Other>(other).getData();
+    return *this;
+  }
+
+  // const assignment required to make ProxyIterator model std::indirectly_writable
+  template <class Other>
+    requires(IsProxy<std::decay_t<Other>> && std::assignable_from<const T&, decltype(std::declval<Other>().getData())>)
+  constexpr const Proxy& operator=(Other&& other) const {
+    data = std::forward<Other>(other).getData();
+    return *this;
+  }
+
+  // If `T` is a reference type, the implicitly-generated assignment operator will be deleted (and would take precedence
+  // over the templated `operator=` above because it's a better match).
+  constexpr Proxy& operator=(const Proxy& rhs) {
+    data = rhs.data;
+    return *this;
+  }
+
+  // no specialised swap function that takes const Proxy& and no specialised const member swap
+  // Calling swap(Proxy<T>{}, Proxy<T>{}) would fail (pass prvalues)
+
+  // Compare operators are defined for the convenience of the tests
+  friend constexpr bool operator==(const Proxy&, const Proxy&)
+    requires (std::equality_comparable<T> && !std::is_reference_v<T>)
+  = default;
+
+  // Helps compare e.g. `Proxy<int>` and `Proxy<int&>`. Note that the default equality comparison operator is deleted
+  // when `T` is a reference type.
+  template <class U>
+  friend constexpr bool operator==(const Proxy& lhs, const Proxy<U>& rhs)
+    requires std::equality_comparable_with<std::decay_t<T>, std::decay_t<U>> {
+    return lhs.data == rhs.data;
+  }
+
+  friend constexpr auto operator<=>(const Proxy&, const Proxy&)
+    requires (std::three_way_comparable<T> && !std::is_reference_v<T>)
+  = default;
+
+  // Helps compare e.g. `Proxy<int>` and `Proxy<int&>`. Note that the default 3-way comparison operator is deleted when
+  // `T` is a reference type.
+  template <class U>
+  friend constexpr auto operator<=>(const Proxy& lhs, const Proxy<U>& rhs)
+    requires std::three_way_comparable_with<std::decay_t<T>, std::decay_t<U>> {
+    return lhs.data <=> rhs.data;
+  }
+};
+
+// This is to make ProxyIterator model `std::indirectly_readable`
+template <class T, class U, template <class> class TQual, template <class> class UQual>
+  requires requires { typename std::common_reference_t<TQual<T>, UQual<U>>; }
+struct std::basic_common_reference<Proxy<T>, Proxy<U>, TQual, UQual> {
+  using type = Proxy<std::common_reference_t<TQual<T>, UQual<U>>>;
+};
+
+template <class T, class U>
+  requires requires { typename std::common_type_t<T, U>; }
+struct std::common_type<Proxy<T>, Proxy<U>> {
+  using type = Proxy<std::common_type_t<T, U>>;
+};
+
+// ProxyIterator
+// ======================================================================
+// It wraps `Base` iterator and when dereferenced it returns a Proxy<ref>
+// It simulates C++23's zip_view::iterator but simplified to just wrap
+// one base iterator.
+// Note it forwards value_type, iter_move, iter_swap. e.g if the base
+// iterator is int*,
+// operator*    -> Proxy<int&>
+// iter_value_t -> Proxy<int>
+// iter_move    -> Proxy<int&&>
+template <class Base>
+struct ProxyIteratorBase {};
+
+template <class Base>
+  requires std::derived_from<
+      typename std::iterator_traits<Base>::iterator_category,
+      std::input_iterator_tag>
+struct ProxyIteratorBase<Base> {
+  using iterator_category = std::input_iterator_tag;
+};
+
+template <std::input_iterator Base>
+consteval auto get_iterator_concept() {
+  if constexpr (std::random_access_iterator<Base>) {
+    return std::random_access_iterator_tag{};
+  } else if constexpr (std::bidirectional_iterator<Base>) {
+    return std::bidirectional_iterator_tag{};
+  } else if constexpr (std::forward_iterator<Base>) {
+    return std::forward_iterator_tag{};
+  } else {
+    return std::input_iterator_tag{};
+  }
+}
+
+template <std::input_iterator Base>
+struct ProxyIterator : ProxyIteratorBase<Base> {
+  Base base_;
+
+  using iterator_concept = decltype(get_iterator_concept<Base>());
+  using value_type       = Proxy<std::iter_value_t<Base>>;
+  using difference_type  = std::iter_difference_t<Base>;
+
+  ProxyIterator()
+    requires std::default_initializable<Base>
+  = default;
+
+  constexpr ProxyIterator(Base base) : base_{std::move(base)} {}
+
+  template <class T>
+    requires std::constructible_from<Base, T&&>
+  constexpr ProxyIterator(T&& t) : base_{std::forward<T>(t)} {}
+
+  friend constexpr decltype(auto) base(const ProxyIterator& p) { return base(p.base_); }
+
+  // Specialization of iter_move
+  // If operator* returns Proxy<Foo&>, iter_move will return Proxy<Foo&&>
+  // Note std::move(*it) returns Proxy<Foo&>&&, which is not what we want as
+  // it will likely result in a copy rather than a move
+  friend constexpr Proxy<std::iter_rvalue_reference_t<Base>> iter_move(const ProxyIterator& p) noexcept {
+    return {std::ranges::iter_move(p.base_)};
+  }
+
+  // Specialization of iter_swap
+  // Note std::swap(*x, *y) would fail to compile as operator* returns prvalues
+  // and std::swap takes non-const lvalue references
+  friend constexpr void iter_swap(const ProxyIterator& x, const ProxyIterator& y) noexcept {
+    std::ranges::iter_swap(x.base_, y.base_);
+  }
+
+  // to satisfy input_iterator
+  constexpr Proxy<std::iter_reference_t<Base>> operator*() const { return {*base_}; }
+
+  constexpr ProxyIterator& operator++() {
+    ++base_;
+    return *this;
+  }
+
+  constexpr void operator++(int) { ++*this; }
+
+  friend constexpr bool operator==(const ProxyIterator& x, const ProxyIterator& y)
+    requires std::equality_comparable<Base> {
+    return x.base_ == y.base_;
+  }
+
+  // to satisfy forward_iterator
+  constexpr ProxyIterator operator++(int)
+    requires std::forward_iterator<Base> {
+    auto tmp = *this;
+    ++*this;
+    return tmp;
+  }
+
+  // to satisfy bidirectional_iterator
+  constexpr ProxyIterator& operator--()
+    requires std::bidirectional_iterator<Base> {
+    --base_;
+    return *this;
+  }
+
+  constexpr ProxyIterator operator--(int)
+    requires std::bidirectional_iterator<Base> {
+    auto tmp = *this;
+    --*this;
+    return tmp;
+  }
+
+  // to satisfy random_access_iterator
+  constexpr ProxyIterator& operator+=(difference_type n)
+    requires std::random_access_iterator<Base> {
+    base_ += n;
+    return *this;
+  }
+
+  constexpr ProxyIterator& operator-=(difference_type n)
+    requires std::random_access_iterator<Base> {
+    base_ -= n;
+    return *this;
+  }
+
+  constexpr Proxy<std::iter_reference_t<Base>> operator[](difference_type n) const
+    requires std::random_access_iterator<Base> {
+    return {base_[n]};
+  }
+
+  friend constexpr bool operator<(const ProxyIterator& x, const ProxyIterator& y)
+    requires std::random_access_iterator<Base> {
+    return x.base_ < y.base_;
+  }
+
+  friend constexpr bool operator>(const ProxyIterator& x, const ProxyIterator& y)
+    requires std::random_access_iterator<Base> {
+    return x.base_ > y.base_;
+  }
+
+  friend constexpr bool operator<=(const ProxyIterator& x, const ProxyIterator& y)
+    requires std::random_access_iterator<Base> {
+    return x.base_ <= y.base_;
+  }
+
+  friend constexpr bool operator>=(const ProxyIterator& x, const ProxyIterator& y)
+    requires std::random_access_iterator<Base> {
+    return x.base_ >= y.base_;
+  }
+
+  friend constexpr auto operator<=>(const ProxyIterator& x, const ProxyIterator& y)
+    requires(std::random_access_iterator<Base> && std::three_way_comparable<Base>) {
+    return x.base_ <=> y.base_;
+  }
+
+  friend constexpr ProxyIterator operator+(const ProxyIterator& x, difference_type n)
+    requires std::random_access_iterator<Base> {
+    return ProxyIterator{x.base_ + n};
+  }
+
+  friend constexpr ProxyIterator operator+(difference_type n, const ProxyIterator& x)
+    requires std::random_access_iterator<Base> {
+    return ProxyIterator{n + x.base_};
+  }
+
+  friend constexpr ProxyIterator operator-(const ProxyIterator& x, difference_type n)
+    requires std::random_access_iterator<Base> {
+    return ProxyIterator{x.base_ - n};
+  }
+
+  friend constexpr difference_type operator-(const ProxyIterator& x, const ProxyIterator& y)
+    requires std::random_access_iterator<Base> {
+    return x.base_ - y.base_;
+  }
+};
+template <class Base>
+ProxyIterator(Base) -> ProxyIterator<Base>;
+
+static_assert(std::indirectly_readable<ProxyIterator<int*>>);
+static_assert(std::indirectly_writable<ProxyIterator<int*>, Proxy<int>>);
+static_assert(std::indirectly_writable<ProxyIterator<int*>, Proxy<int&>>);
+
+template <class Iter>
+using Cpp20InputProxyIterator = ProxyIterator<cpp20_input_iterator<Iter>>;
+
+template <class Iter>
+using ForwardProxyIterator = ProxyIterator<forward_iterator<Iter>>;
+
+template <class Iter>
+using BidirectionalProxyIterator = ProxyIterator<bidirectional_iterator<Iter>>;
+
+template <class Iter>
+using RandomAccessProxyIterator = ProxyIterator<random_access_iterator<Iter>>;
+
+template <class Iter>
+using ContiguousProxyIterator = ProxyIterator<contiguous_iterator<Iter>>;
+
+template <class BaseSent>
+struct ProxySentinel {
+  BaseSent base_;
+
+  ProxySentinel() = default;
+  constexpr ProxySentinel(BaseSent base) : base_{std::move(base)} {}
+
+  template <class Base>
+    requires std::equality_comparable_with<Base, BaseSent>
+  friend constexpr bool operator==(const ProxyIterator<Base>& p, const ProxySentinel& sent) {
+    return p.base_ == sent.base_;
+  }
+};
+template <class BaseSent>
+ProxySentinel(BaseSent) -> ProxySentinel<BaseSent>;
+
+template <std::ranges::input_range Base>
+  requires std::ranges::view<Base>
+struct ProxyRange {
+  Base base_;
+
+  constexpr auto begin() { return ProxyIterator{std::ranges::begin(base_)}; }
+
+  constexpr auto end() { return ProxySentinel{std::ranges::end(base_)}; }
+
+  constexpr auto begin() const
+    requires std::ranges::input_range<const Base> {
+    return ProxyIterator{std::ranges::begin(base_)};
+  }
+
+  constexpr auto end() const
+    requires std::ranges::input_range<const Base> {
+    return ProxySentinel{std::ranges::end(base_)};
+  }
+};
+
+template <std::ranges::input_range R>
+  requires std::ranges::viewable_range<R&&>
+ProxyRange(R&&) -> ProxyRange<std::views::all_t<R&&>>;
+
+namespace meta {
+template <class Ptr>
+using random_access_iterator_list = type_list<Ptr, contiguous_iterator<Ptr>, random_access_iterator<Ptr>>;
+
+template <class Ptr>
+using bidirectional_iterator_list =
+    concatenate_t<random_access_iterator_list<Ptr>, type_list<bidirectional_iterator<Ptr>>>;
+
+template <class Ptr>
+using forward_iterator_list = concatenate_t<bidirectional_iterator_list<Ptr>, type_list<forward_iterator<Ptr>>>;
+
+template <class Ptr>
+using cpp20_input_iterator_list =
+    concatenate_t<forward_iterator_list<Ptr>, type_list<cpp20_input_iterator<Ptr>, cpp17_input_iterator<Ptr>>>;
+
+} // namespace meta
+
+#endif // TEST_STD_VER > 17
+
+#endif // SUPPORT_TEST_ITERATORS_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_macros.h b/app/src/main/cpp/libcxx/test/support/test_macros.h
new file mode 100644
index 0000000..573c8d8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_macros.h
@@ -0,0 +1,440 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_MACROS_HPP
+#define SUPPORT_TEST_MACROS_HPP
+
+// Attempt to get STL specific macros like _LIBCPP_VERSION using the most
+// minimal header possible. If we're testing libc++, we should use `<__config>`.
+// If <__config> isn't available, fall back to <ciso646>.
+#ifdef __has_include
+# if __has_include("<__config>")
+#   include <__config>
+#   define TEST_IMP_INCLUDED_HEADER
+# endif
+#endif
+#ifndef TEST_IMP_INCLUDED_HEADER
+#include <ciso646>
+#endif
+
+#define TEST_STRINGIZE_IMPL(x) #x
+#define TEST_STRINGIZE(x) TEST_STRINGIZE_IMPL(x)
+
+#define TEST_CONCAT1(X, Y) X##Y
+#define TEST_CONCAT(X, Y) TEST_CONCAT1(X, Y)
+
+#ifdef __has_feature
+#define TEST_HAS_FEATURE(X) __has_feature(X)
+#else
+#define TEST_HAS_FEATURE(X) 0
+#endif
+
+#ifndef __has_include
+#define __has_include(...) 0
+#endif
+
+#ifdef __has_extension
+#define TEST_HAS_EXTENSION(X) __has_extension(X)
+#else
+#define TEST_HAS_EXTENSION(X) 0
+#endif
+
+#ifdef __has_warning
+#define TEST_HAS_WARNING(X) __has_warning(X)
+#else
+#define TEST_HAS_WARNING(X) 0
+#endif
+
+#ifdef __has_builtin
+#define TEST_HAS_BUILTIN(X) __has_builtin(X)
+#else
+#define TEST_HAS_BUILTIN(X) 0
+#endif
+#ifdef __is_identifier
+// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by
+// the compiler and '1' otherwise.
+#define TEST_HAS_BUILTIN_IDENTIFIER(X) !__is_identifier(X)
+#else
+#define TEST_HAS_BUILTIN_IDENTIFIER(X) 0
+#endif
+
+#if defined(__EDG__)
+# define TEST_COMPILER_EDG
+#elif defined(__clang__)
+# define TEST_COMPILER_CLANG
+# if defined(__apple_build_version__)
+#  define TEST_COMPILER_APPLE_CLANG
+# endif
+#elif defined(_MSC_VER)
+# define TEST_COMPILER_MSVC
+#elif defined(__GNUC__)
+# define TEST_COMPILER_GCC
+#endif
+
+#if defined(__apple_build_version__)
+#define TEST_APPLE_CLANG_VER (__clang_major__ * 100) + __clang_minor__
+#elif defined(__clang_major__)
+#define TEST_CLANG_VER (__clang_major__ * 100) + __clang_minor__
+#elif defined(__GNUC__)
+// Given GCC XX.YY.ZZ, TEST_GCC_VER is XXYYZZ
+#define TEST_GCC_VER ((__GNUC__ * 10000) + (__GNUC_MINOR__ * 100) + __GNUC_PATCHLEVEL__)
+#endif
+
+/* Make a nice name for the standard version */
+#ifndef TEST_STD_VER
+#if  __cplusplus <= 199711L
+# define TEST_STD_VER 3
+#elif __cplusplus <= 201103L
+# define TEST_STD_VER 11
+#elif __cplusplus <= 201402L
+# define TEST_STD_VER 14
+#elif __cplusplus <= 201703L
+# define TEST_STD_VER 17
+#elif __cplusplus <= 202002L
+# define TEST_STD_VER 20
+#else
+# define TEST_STD_VER 99    // greater than current standard
+// This is deliberately different than _LIBCPP_STD_VER to discourage matching them up.
+#endif
+#endif
+
+// Attempt to deduce the GLIBC version
+#if (defined(__has_include) && __has_include(<features.h>)) || \
+    defined(__linux__)
+#include <features.h>
+#if defined(__GLIBC_PREREQ)
+#define TEST_HAS_GLIBC
+#define TEST_GLIBC_PREREQ(major, minor) __GLIBC_PREREQ(major, minor)
+#endif
+#endif
+
+#if TEST_STD_VER >= 11
+# define TEST_ALIGNOF(...) alignof(__VA_ARGS__)
+# define TEST_ALIGNAS(...) alignas(__VA_ARGS__)
+# define TEST_CONSTEXPR constexpr
+# define TEST_NOEXCEPT noexcept
+# define TEST_NOEXCEPT_FALSE noexcept(false)
+# define TEST_NOEXCEPT_COND(...) noexcept(__VA_ARGS__)
+#else
+#   if defined(TEST_COMPILER_CLANG)
+#    define TEST_ALIGNOF(...) _Alignof(__VA_ARGS__)
+#   else
+#    define TEST_ALIGNOF(...) __alignof(__VA_ARGS__)
+#   endif
+# define TEST_ALIGNAS(...) __attribute__((__aligned__(__VA_ARGS__)))
+# define TEST_CONSTEXPR
+# define TEST_NOEXCEPT throw()
+# define TEST_NOEXCEPT_FALSE
+# define TEST_NOEXCEPT_COND(...)
+#endif
+
+#if TEST_STD_VER >= 11
+# define TEST_THROW_SPEC(...)
+#else
+# define TEST_THROW_SPEC(...) throw(__VA_ARGS__)
+#endif
+
+#if defined(__cpp_lib_is_constant_evaluated) && __cpp_lib_is_constant_evaluated >= 201811L
+# define TEST_IS_CONSTANT_EVALUATED std::is_constant_evaluated()
+#elif TEST_HAS_BUILTIN(__builtin_is_constant_evaluated)
+# define TEST_IS_CONSTANT_EVALUATED __builtin_is_constant_evaluated()
+#else
+# define TEST_IS_CONSTANT_EVALUATED false
+#endif
+
+#if TEST_STD_VER >= 14
+# define TEST_CONSTEXPR_CXX14 constexpr
+#else
+# define TEST_CONSTEXPR_CXX14
+#endif
+
+#if TEST_STD_VER >= 17
+# define TEST_CONSTEXPR_CXX17 constexpr
+#else
+# define TEST_CONSTEXPR_CXX17
+#endif
+
+#if TEST_STD_VER >= 20
+# define TEST_CONSTEXPR_CXX20 constexpr
+#else
+# define TEST_CONSTEXPR_CXX20
+#endif
+
+#if TEST_STD_VER >= 23
+#  define TEST_CONSTEXPR_CXX23 constexpr
+#else
+#  define TEST_CONSTEXPR_CXX23
+#endif
+
+#define TEST_ALIGNAS_TYPE(...) TEST_ALIGNAS(TEST_ALIGNOF(__VA_ARGS__))
+
+#if !TEST_HAS_FEATURE(cxx_rtti) && !defined(__cpp_rtti) \
+    && !defined(__GXX_RTTI)
+#define TEST_HAS_NO_RTTI
+#endif
+
+#if !defined(TEST_HAS_NO_RTTI)
+# define RTTI_ASSERT(X) assert(X)
+#else
+# define RTTI_ASSERT(X)
+#endif
+
+#if !TEST_HAS_FEATURE(cxx_exceptions) && !defined(__cpp_exceptions) \
+     && !defined(__EXCEPTIONS)
+#define TEST_HAS_NO_EXCEPTIONS
+#endif
+
+#if TEST_HAS_FEATURE(address_sanitizer) || TEST_HAS_FEATURE(hwaddress_sanitizer) || \
+    TEST_HAS_FEATURE(memory_sanitizer) || TEST_HAS_FEATURE(thread_sanitizer)
+#define TEST_HAS_SANITIZERS
+#define TEST_IS_EXECUTED_IN_A_SLOW_ENVIRONMENT
+#endif
+
+#if defined(_LIBCPP_NORETURN)
+#define TEST_NORETURN _LIBCPP_NORETURN
+#else
+#define TEST_NORETURN [[noreturn]]
+#endif
+
+#if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION) || \
+  (!(TEST_STD_VER > 14 || \
+    (defined(__cpp_aligned_new) && __cpp_aligned_new >= 201606L)))
+#define TEST_HAS_NO_ALIGNED_ALLOCATION
+#endif
+
+#if TEST_STD_VER > 17
+#define TEST_CONSTINIT constinit
+#elif defined(_LIBCPP_CONSTINIT)
+#define TEST_CONSTINIT _LIBCPP_CONSTINIT
+#else
+#define TEST_CONSTINIT
+#endif
+
+#if TEST_STD_VER < 11
+#define ASSERT_NOEXCEPT(...)
+#define ASSERT_NOT_NOEXCEPT(...)
+#else
+#define ASSERT_NOEXCEPT(...) \
+    static_assert(noexcept(__VA_ARGS__), "Operation must be noexcept")
+
+#define ASSERT_NOT_NOEXCEPT(...) \
+    static_assert(!noexcept(__VA_ARGS__), "Operation must NOT be noexcept")
+#endif
+
+/* Macros for testing libc++ specific behavior and extensions */
+#if defined(_LIBCPP_VERSION)
+#define LIBCPP_ASSERT(...) assert(__VA_ARGS__)
+#define LIBCPP_STATIC_ASSERT(...) static_assert(__VA_ARGS__)
+#define LIBCPP_ASSERT_NOEXCEPT(...) ASSERT_NOEXCEPT(__VA_ARGS__)
+#define LIBCPP_ASSERT_NOT_NOEXCEPT(...) ASSERT_NOT_NOEXCEPT(__VA_ARGS__)
+#define LIBCPP_ONLY(...) __VA_ARGS__
+#else
+#define LIBCPP_ASSERT(...) static_assert(true, "")
+#define LIBCPP_STATIC_ASSERT(...) static_assert(true, "")
+#define LIBCPP_ASSERT_NOEXCEPT(...) static_assert(true, "")
+#define LIBCPP_ASSERT_NOT_NOEXCEPT(...) static_assert(true, "")
+#define LIBCPP_ONLY(...) static_assert(true, "")
+#endif
+
+#if __has_cpp_attribute(nodiscard)
+#  define TEST_NODISCARD [[nodiscard]]
+#else
+#  define TEST_NODISCARD
+#endif
+
+#define TEST_IGNORE_NODISCARD (void)
+
+namespace test_macros_detail {
+template <class T, class U>
+struct is_same { enum { value = 0};} ;
+template <class T>
+struct is_same<T, T> { enum {value = 1}; };
+} // namespace test_macros_detail
+
+#define ASSERT_SAME_TYPE(...) \
+    static_assert((test_macros_detail::is_same<__VA_ARGS__>::value), \
+                 "Types differ unexpectedly")
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+#define TEST_THROW(...) throw __VA_ARGS__
+#else
+#if defined(__GNUC__)
+#define TEST_THROW(...) __builtin_abort()
+#else
+#include <stdlib.h>
+#define TEST_THROW(...) ::abort()
+#endif
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+template <class Tp>
+inline
+void DoNotOptimize(Tp const& value) {
+    asm volatile("" : : "r,m"(value) : "memory");
+}
+
+template <class Tp>
+inline void DoNotOptimize(Tp& value) {
+#if defined(__clang__)
+  asm volatile("" : "+r,m"(value) : : "memory");
+#else
+  asm volatile("" : "+m,r"(value) : : "memory");
+#endif
+}
+#else
+#include <intrin.h>
+template <class Tp>
+inline void DoNotOptimize(Tp const& value) {
+  const volatile void* volatile unused = __builtin_addressof(value);
+  static_cast<void>(unused);
+  _ReadWriteBarrier();
+}
+#endif
+
+#if defined(__GNUC__)
+#define TEST_ALWAYS_INLINE __attribute__((always_inline))
+#define TEST_NOINLINE __attribute__((noinline))
+#elif defined(_MSC_VER)
+#define TEST_ALWAYS_INLINE __forceinline
+#define TEST_NOINLINE __declspec(noinline)
+#else
+#define TEST_ALWAYS_INLINE
+#define TEST_NOINLINE
+#endif
+
+#ifdef _WIN32
+#define TEST_NOT_WIN32(...) ((void)0)
+#else
+#define TEST_NOT_WIN32(...) __VA_ARGS__
+#endif
+
+#if defined(TEST_WINDOWS_DLL) ||defined(__MVS__) || defined(_AIX)
+// Macros for waiving cases when we can't count allocations done within
+// the library implementation.
+//
+// On Windows, when libc++ is built as a DLL, references to operator new/delete
+// within the DLL are bound at link time to the operator new/delete within
+// the library; replacing them in the user executable doesn't override the
+// calls within the library.
+//
+// The same goes on IBM zOS.
+// The same goes on AIX.
+#define ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(...) ((void)(__VA_ARGS__))
+#define TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS 0
+#else
+#define ASSERT_WITH_LIBRARY_INTERNAL_ALLOCATIONS(...) assert(__VA_ARGS__)
+#define TEST_SUPPORTS_LIBRARY_INTERNAL_ALLOCATIONS 1
+#endif
+
+#if (defined(TEST_WINDOWS_DLL) && !defined(_MSC_VER)) ||                      \
+    defined(__MVS__)
+// Normally, a replaced e.g. 'operator new' ends up used if the user code
+// does a call to e.g. 'operator new[]'; it's enough to replace the base
+// versions and have it override all of them.
+//
+// When the fallback operators are located within the libc++ library and we
+// can't override the calls within it (see above), this fallback mechanism
+// doesn't work either.
+//
+// On Windows, when using the MSVC vcruntime, the operator new/delete fallbacks
+// are linked separately from the libc++ library, linked statically into
+// the end user executable, and these fallbacks work even in DLL configurations.
+// In MinGW configurations when built as a DLL, and on zOS, these fallbacks
+// don't work though.
+#define ASSERT_WITH_OPERATOR_NEW_FALLBACKS(...) ((void)(__VA_ARGS__))
+#else
+#define ASSERT_WITH_OPERATOR_NEW_FALLBACKS(...) assert(__VA_ARGS__)
+#endif
+
+#ifdef _WIN32
+#define TEST_WIN_NO_FILESYSTEM_PERMS_NONE
+#endif
+
+// Support for carving out parts of the test suite, like removing wide characters, etc.
+#if defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
+#   define TEST_HAS_NO_WIDE_CHARACTERS
+#endif
+
+#if defined(_LIBCPP_HAS_NO_UNICODE)
+#   define TEST_HAS_NO_UNICODE
+#elif defined(_MSVC_EXECUTION_CHARACTER_SET) && _MSVC_EXECUTION_CHARACTER_SET != 65001
+#   define TEST_HAS_NO_UNICODE
+#endif
+
+#if defined(_LIBCPP_HAS_NO_INT128) || defined(_MSVC_STL_VERSION)
+#   define TEST_HAS_NO_INT128
+#endif
+
+#if defined(_LIBCPP_HAS_NO_LOCALIZATION)
+#  define TEST_HAS_NO_LOCALIZATION
+#endif
+
+#if TEST_STD_VER <= 17 || !defined(__cpp_char8_t)
+#  define TEST_HAS_NO_CHAR8_T
+#endif
+
+#if defined(_LIBCPP_HAS_NO_THREADS)
+#  define TEST_HAS_NO_THREADS
+#endif
+
+#if defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)
+#  define TEST_HAS_NO_FILESYSTEM_LIBRARY
+#endif
+
+#if defined(_LIBCPP_HAS_NO_FSTREAM)
+#  define TEST_HAS_NO_FSTREAM
+#endif
+
+#if defined(_LIBCPP_HAS_NO_FGETPOS_FSETPOS)
+#  define TEST_HAS_NO_FGETPOS_FSETPOS
+#endif
+
+#if defined(_LIBCPP_HAS_NO_C8RTOMB_MBRTOC8)
+#  define TEST_HAS_NO_C8RTOMB_MBRTOC8
+#endif
+
+#if defined(TEST_COMPILER_CLANG)
+#  define TEST_DIAGNOSTIC_PUSH _Pragma("clang diagnostic push")
+#  define TEST_DIAGNOSTIC_POP _Pragma("clang diagnostic pop")
+#  define TEST_CLANG_DIAGNOSTIC_IGNORED(str) _Pragma(TEST_STRINGIZE(clang diagnostic ignored str))
+#  define TEST_GCC_DIAGNOSTIC_IGNORED(str)
+#  define TEST_MSVC_DIAGNOSTIC_IGNORED(num)
+#elif defined(TEST_COMPILER_GCC)
+#  define TEST_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
+#  define TEST_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
+#  define TEST_CLANG_DIAGNOSTIC_IGNORED(str)
+#  define TEST_GCC_DIAGNOSTIC_IGNORED(str) _Pragma(TEST_STRINGIZE(GCC diagnostic ignored str))
+#  define TEST_MSVC_DIAGNOSTIC_IGNORED(num)
+#elif defined(TEST_COMPILER_MSVC)
+#  define TEST_DIAGNOSTIC_PUSH _Pragma("warning(push)")
+#  define TEST_DIAGNOSTIC_POP _Pragma("warning(pop)")
+#  define TEST_CLANG_DIAGNOSTIC_IGNORED(str)
+#  define TEST_GCC_DIAGNOSTIC_IGNORED(str)
+#  define TEST_MSVC_DIAGNOSTIC_IGNORED(num) _Pragma(TEST_STRINGIZE(warning(disable: num)))
+#else
+#  define TEST_DIAGNOSTIC_PUSH
+#  define TEST_DIAGNOSTIC_POP
+#  define TEST_CLANG_DIAGNOSTIC_IGNORED(str)
+#  define TEST_GCC_DIAGNOSTIC_IGNORED(str)
+#  define TEST_MSVC_DIAGNOSTIC_IGNORED(num)
+#endif
+
+#if __has_cpp_attribute(msvc::no_unique_address)
+#define TEST_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
+#elif __has_cpp_attribute(no_unique_address)
+#define TEST_NO_UNIQUE_ADDRESS [[no_unique_address]]
+#else
+#define TEST_NO_UNIQUE_ADDRESS
+#endif
+
+#ifdef _LIBCPP_SHORT_WCHAR
+#  define TEST_SHORT_WCHAR
+#endif
+
+#endif // SUPPORT_TEST_MACROS_HPP
diff --git a/app/src/main/cpp/libcxx/test/support/test_memory_resource.h b/app/src/main/cpp/libcxx/test/support/test_memory_resource.h
new file mode 100644
index 0000000..1a0d722
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_memory_resource.h
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_MEMORY_RESOURCE_H
+#define SUPPORT_TEST_MEMORY_RESOURCE_H
+
+#include <experimental/memory_resource>
+#include <experimental/utility>
+#include <memory>
+#include <type_traits>
+#include <cstddef>
+#include <cstdlib>
+#include <cstring>
+#include <cstdint>
+#include <cassert>
+#include "test_macros.h"
+#include "controlled_allocators.h"
+#include "uses_alloc_types.h"
+
+// FIXME: This is a hack to allow uses_allocator_types.hpp to work with
+// erased_type. However we can't define that behavior directly in the header
+// because it can't include <experimental/memory_resource>
+template <>
+struct TransformErasedTypeAlloc<std::experimental::erased_type> {
+  using type = std::experimental::pmr::polymorphic_allocator<int>;
+};
+
+template <class ProviderT, int = 0>
+class TestResourceImp : public std::experimental::pmr::memory_resource
+{
+public:
+    static int resource_alive;
+    static int resource_constructed;
+    static int resource_destructed;
+
+    static void resetStatics() {
+        assert(resource_alive == 0);
+        resource_alive = 0;
+        resource_constructed = 0;
+        resource_destructed = 0;
+    }
+
+    using memory_resource = std::experimental::pmr::memory_resource;
+    using Provider = ProviderT;
+
+    int value;
+
+    explicit TestResourceImp(int val = 0) : value(val) {
+        ++resource_alive;
+        ++resource_constructed;
+    }
+
+    ~TestResourceImp() noexcept {
+        --resource_alive;
+        ++resource_destructed;
+    }
+
+    void reset() { C.reset(); P.reset(); }
+    AllocController& getController() { return C; }
+
+    bool checkAlloc(void* p, std::size_t s, std::size_t a) const
+      { return C.checkAlloc(p, s, a); }
+
+    bool checkDealloc(void* p, std::size_t s, std::size_t a) const
+      { return C.checkDealloc(p, s, a); }
+
+    bool checkIsEqualCalledEq(int n) const { return C.checkIsEqualCalledEq(n); }
+
+protected:
+    virtual void * do_allocate(std::size_t s, std::size_t a) {
+        if (C.throw_on_alloc) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw TestException{};
+#else
+            assert(false);
+#endif
+        }
+        void* ret = P.allocate(s, a);
+        C.countAlloc(ret, s, a);
+        return ret;
+    }
+
+    virtual void do_deallocate(void * p, std::size_t s, std::size_t a) {
+        C.countDealloc(p, s, a);
+        P.deallocate(p, s, a);
+    }
+
+    virtual bool do_is_equal(memory_resource const & other) const noexcept {
+        C.countIsEqual();
+        TestResourceImp const * o = dynamic_cast<TestResourceImp const *>(&other);
+        return o && o->value == value;
+    }
+private:
+    mutable AllocController C;
+    mutable Provider P;
+    DISALLOW_COPY(TestResourceImp);
+};
+
+template <class Provider, int N>
+int TestResourceImp<Provider, N>::resource_alive = 0;
+
+template <class Provider, int N>
+int TestResourceImp<Provider, N>::resource_constructed = 0;
+
+template <class Provider, int N>
+int TestResourceImp<Provider, N>::resource_destructed = 0;
+
+
+struct NullProvider {
+    NullProvider() {}
+    void* allocate(size_t, size_t) { return nullptr; }
+    void deallocate(void*, size_t, size_t) {}
+    void reset() {}
+private:
+    DISALLOW_COPY(NullProvider);
+};
+
+struct NewDeleteProvider {
+    NewDeleteProvider() {}
+    void* allocate(size_t s, size_t) { return ::operator new(s); }
+    void deallocate(void* p, size_t, size_t) { ::operator delete(p); }
+    void reset() {}
+private:
+    DISALLOW_COPY(NewDeleteProvider);
+};
+
+template <size_t Size = 4096 * 10> // 10 pages worth of memory.
+struct BufferProvider {
+    char buffer[Size];
+    void* next = &buffer;
+    size_t space = Size;
+
+    BufferProvider() {}
+
+    void* allocate(size_t s, size_t a) {
+        void* ret = std::align(s, a, next, space);
+        if (ret == nullptr) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+            throw std::bad_alloc();
+#else
+            assert(false);
+#endif
+        }
+
+        return ret;
+    }
+
+    void deallocate(void*, size_t, size_t) {}
+
+    void reset() {
+        next = &buffer;
+        space = Size;
+    }
+private:
+    DISALLOW_COPY(BufferProvider);
+};
+
+using NullResource = TestResourceImp<NullProvider, 0>;
+using NewDeleteResource = TestResourceImp<NewDeleteProvider, 0>;
+using TestResource  = TestResourceImp<BufferProvider<>, 0>;
+using TestResource1 = TestResourceImp<BufferProvider<>, 1>;
+using TestResource2 = TestResourceImp<BufferProvider<>, 2>;
+
+
+#endif /* SUPPORT_TEST_MEMORY_RESOURCE_H */
diff --git a/app/src/main/cpp/libcxx/test/support/test_range.h b/app/src/main/cpp/libcxx/test/support/test_range.h
new file mode 100644
index 0000000..eea8ce1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_range.h
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LIBCXX_TEST_SUPPORT_TEST_RANGE_H
+#define LIBCXX_TEST_SUPPORT_TEST_RANGE_H
+
+#include <iterator>
+#include <ranges>
+
+#include "test_iterators.h"
+
+#if TEST_STD_VER < 17
+#error "test/support/test_range.h" can only be included in builds supporting ranges
+#endif
+
+struct sentinel {
+  bool operator==(std::input_or_output_iterator auto const&) const;
+};
+
+template <template <class...> class I>
+requires std::input_or_output_iterator<I<int*> >
+struct test_range {
+  I<int*> begin();
+  I<int const*> begin() const;
+  sentinel end();
+  sentinel end() const;
+};
+
+template <template <class...> class I>
+requires std::input_or_output_iterator<I<int*> >
+struct test_non_const_range {
+  I<int*> begin();
+  sentinel end();
+};
+
+template <template <class...> class I>
+requires std::input_or_output_iterator<I<int*> >
+struct test_common_range {
+  I<int*> begin();
+  I<int const*> begin() const;
+  I<int*> end();
+  I<int const*> end() const;
+};
+
+template <template <class...> class I>
+requires std::input_or_output_iterator<I<int*> >
+struct test_non_const_common_range {
+  I<int*> begin();
+  I<int*> end();
+};
+
+template <template <class...> class I>
+requires std::input_or_output_iterator<I<int*> >
+struct test_view : std::ranges::view_base {
+  I<int*> begin();
+  I<int const*> begin() const;
+  sentinel end();
+  sentinel end() const;
+};
+
+struct BorrowedRange {
+  int *begin() const;
+  int *end() const;
+  BorrowedRange(BorrowedRange&&) = delete;
+};
+template<> inline constexpr bool std::ranges::enable_borrowed_range<BorrowedRange> = true;
+static_assert(!std::ranges::view<BorrowedRange>);
+static_assert(std::ranges::borrowed_range<BorrowedRange>);
+
+using BorrowedView = std::ranges::empty_view<int>;
+static_assert(std::ranges::view<BorrowedView>);
+static_assert(std::ranges::borrowed_range<BorrowedView>);
+
+using NonBorrowedView = std::ranges::single_view<int>;
+static_assert(std::ranges::view<NonBorrowedView>);
+static_assert(!std::ranges::borrowed_range<NonBorrowedView>);
+
+#endif // LIBCXX_TEST_SUPPORT_TEST_RANGE_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_std_memory_resource.h b/app/src/main/cpp/libcxx/test/support/test_std_memory_resource.h
new file mode 100644
index 0000000..b372c27
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_std_memory_resource.h
@@ -0,0 +1,170 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_STD_MEMORY_RESOURCE_H
+#define SUPPORT_TEST_STD_MEMORY_RESOURCE_H
+
+#include <memory>
+#include <memory_resource>
+#include <type_traits>
+#include <utility>
+#include <cstddef>
+#include <cstdlib>
+#include <cstring>
+#include <cstdint>
+#include <cassert>
+#include "test_macros.h"
+#include "controlled_allocators.h"
+#include "uses_alloc_types.h"
+
+template <class ProviderT, int = 0>
+class TestResourceImp : public std::pmr::memory_resource {
+public:
+  static int resource_alive;
+  static int resource_constructed;
+  static int resource_destructed;
+
+  static void resetStatics() {
+    assert(resource_alive == 0);
+    resource_alive       = 0;
+    resource_constructed = 0;
+    resource_destructed  = 0;
+  }
+
+  using memory_resource = std::pmr::memory_resource;
+  using Provider        = ProviderT;
+
+  int value;
+
+  explicit TestResourceImp(int val = 0) : value(val) {
+    ++resource_alive;
+    ++resource_constructed;
+  }
+
+  ~TestResourceImp() noexcept {
+    --resource_alive;
+    ++resource_destructed;
+  }
+
+  void reset() {
+    C.reset();
+    P.reset();
+  }
+  AllocController& getController() { return C; }
+
+  bool checkAlloc(void* p, std::size_t s, std::size_t a) const { return C.checkAlloc(p, s, a); }
+
+  bool checkDealloc(void* p, std::size_t s, std::size_t a) const { return C.checkDealloc(p, s, a); }
+
+  bool checkIsEqualCalledEq(int n) const { return C.checkIsEqualCalledEq(n); }
+
+protected:
+  virtual void* do_allocate(std::size_t s, std::size_t a) {
+    if (C.throw_on_alloc) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      throw TestException{};
+#else
+      assert(false);
+#endif
+    }
+    void* ret = P.allocate(s, a);
+    C.countAlloc(ret, s, a);
+    return ret;
+  }
+
+  virtual void do_deallocate(void* p, std::size_t s, std::size_t a) {
+    C.countDealloc(p, s, a);
+    P.deallocate(p, s, a);
+  }
+
+  virtual bool do_is_equal(memory_resource const& other) const noexcept {
+    C.countIsEqual();
+    TestResourceImp const* o = dynamic_cast<TestResourceImp const*>(&other);
+    return o && o->value == value;
+  }
+
+private:
+  mutable AllocController C;
+  mutable Provider P;
+  DISALLOW_COPY(TestResourceImp);
+};
+
+template <class Provider, int N>
+int TestResourceImp<Provider, N>::resource_alive = 0;
+
+template <class Provider, int N>
+int TestResourceImp<Provider, N>::resource_constructed = 0;
+
+template <class Provider, int N>
+int TestResourceImp<Provider, N>::resource_destructed = 0;
+
+struct NullProvider {
+  NullProvider() {}
+  void* allocate(size_t, size_t) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+    throw std::runtime_error("");
+#else
+    std::abort();
+#endif
+  }
+  void deallocate(void*, size_t, size_t) {}
+  void reset() {}
+
+private:
+  DISALLOW_COPY(NullProvider);
+};
+
+struct NewDeleteProvider {
+  NewDeleteProvider() {}
+  void* allocate(size_t s, size_t) { return ::operator new(s); }
+  void deallocate(void* p, size_t, size_t) { ::operator delete(p); }
+  void reset() {}
+
+private:
+  DISALLOW_COPY(NewDeleteProvider);
+};
+
+template <size_t Size = 4096 * 10> // 10 pages worth of memory.
+struct BufferProvider {
+  char buffer[Size];
+  void* next   = &buffer;
+  size_t space = Size;
+
+  BufferProvider() {}
+
+  void* allocate(size_t s, size_t a) {
+    void* ret = std::align(a, s, next, space);
+    if (ret == nullptr) {
+#ifndef TEST_HAS_NO_EXCEPTIONS
+      throw std::bad_alloc();
+#else
+      assert(false);
+#endif
+    }
+
+    return ret;
+  }
+
+  void deallocate(void*, size_t, size_t) {}
+
+  void reset() {
+    next  = &buffer;
+    space = Size;
+  }
+
+private:
+  DISALLOW_COPY(BufferProvider);
+};
+
+using NullResource      = TestResourceImp<NullProvider, 0>;
+using NewDeleteResource = TestResourceImp<NewDeleteProvider, 0>;
+using TestResource      = TestResourceImp<BufferProvider<>, 0>;
+using TestResource1     = TestResourceImp<BufferProvider<>, 1>;
+using TestResource2     = TestResourceImp<BufferProvider<>, 2>;
+
+#endif /* SUPPORT_TEST_STD_MEMORY_RESOURCE_H */
diff --git a/app/src/main/cpp/libcxx/test/support/test_transparent_unordered.h b/app/src/main/cpp/libcxx/test/support/test_transparent_unordered.h
new file mode 100644
index 0000000..e2d0240
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_transparent_unordered.h
@@ -0,0 +1,187 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_TRANSPARENT_UNORDERED_H
+#define TEST_TRANSPARENT_UNORDERED_H
+
+#include "test_macros.h"
+#include "is_transparent.h"
+
+#include <cassert>
+
+#if TEST_STD_VER > 17
+
+template <typename T>
+struct StoredType;
+
+template <typename T>
+struct SearchedType;
+
+struct hash_impl {
+  template <typename T>
+  constexpr std::size_t operator()(SearchedType<T> const& t) const {
+    return static_cast<std::size_t>(t.get_value());
+  }
+
+  template <typename T>
+  constexpr std::size_t operator()(StoredType<T> const& t) const {
+    return static_cast<std::size_t>(t.get_value());
+  }
+};
+
+struct non_transparent_hash : hash_impl {};
+
+struct transparent_hash : hash_impl {
+  using is_transparent = void;
+};
+
+struct transparent_hash_final final : transparent_hash {};
+
+struct transparent_equal_final final : std::equal_to<> {};
+
+template <typename T>
+struct SearchedType {
+  explicit SearchedType(T value, int *counter) : value_(value), conversions_(counter) { }
+
+  // Whenever a conversion is performed, increment the counter to keep track
+  // of conversions.
+  operator StoredType<T>() const {
+    ++*conversions_;
+    return StoredType<T>{value_};
+  }
+
+  int get_value() const {
+    return value_;
+  }
+
+private:
+  T value_;
+  int *conversions_;
+};
+
+template <typename T>
+struct StoredType {
+  StoredType() = default;
+  StoredType(T value) : value_(value) { }
+
+  friend bool operator==(StoredType const& lhs, StoredType const& rhs) {
+    return lhs.value_ == rhs.value_;
+  }
+
+  // If we're being passed a SearchedType<T> object, avoid the conversion
+  // to T. This allows testing that the transparent operations are correctly
+  // forwarding the SearchedType all the way to this comparison by checking
+  // that we didn't have a conversion when we search for a SearchedType<T>
+  // in a container full of StoredType<T>.
+  friend bool operator==(StoredType const& lhs, SearchedType<T> const& rhs) {
+    return lhs.value_ == rhs.get_value();
+  }
+
+  int get_value() const {
+    return value_;
+  }
+
+private:
+  T value_;
+};
+
+template<template<class...> class UnorderedSet, class Hash, class Equal>
+using unord_set_type = UnorderedSet<StoredType<int>, Hash, Equal>;
+
+template<template<class...> class UnorderedMap, class Hash, class Equal>
+using unord_map_type = UnorderedMap<StoredType<int>, int, Hash, Equal>;
+
+template<class Container>
+void test_transparent_find(Container c) {
+  int conversions = 0;
+  assert(c.find(SearchedType<int>(1, &conversions)) != c.end());
+  assert(c.find(SearchedType<int>(2, &conversions)) != c.end());
+  assert(c.find(SearchedType<int>(3, &conversions)) == c.end());
+  assert(conversions == 0);
+}
+
+template<class Container>
+void test_non_transparent_find(Container c) {
+  int conversions = 0;
+  assert(c.find(SearchedType<int>(1, &conversions)) != c.end());
+  assert(conversions == 1);
+  assert(c.find(SearchedType<int>(2, &conversions)) != c.end());
+  assert(conversions == 2);
+  assert(c.find(SearchedType<int>(3, &conversions)) == c.end());
+  assert(conversions == 3);
+}
+
+template<class Container>
+void test_transparent_count(Container c) {
+  int conversions = 0;
+  assert(c.count(SearchedType<int>(1, &conversions)) > 0);
+  assert(c.count(SearchedType<int>(2, &conversions)) > 0);
+  assert(c.count(SearchedType<int>(3, &conversions)) == 0);
+  assert(conversions == 0);
+}
+
+template<class Container>
+void test_non_transparent_count(Container c) {
+  int conversions = 0;
+  assert(c.count(SearchedType<int>(1, &conversions)) > 0);
+  assert(conversions == 1);
+  assert(c.count(SearchedType<int>(2, &conversions)) > 0);
+  assert(conversions == 2);
+  assert(c.count(SearchedType<int>(3, &conversions)) == 0);
+  assert(conversions == 3);
+}
+
+template<class Container>
+void test_transparent_contains(Container c) {
+  int conversions = 0;
+  assert(c.contains(SearchedType<int>(1, &conversions)));
+  assert(c.contains(SearchedType<int>(2, &conversions)));
+  assert(!c.contains(SearchedType<int>(3, &conversions)));
+  assert(conversions == 0);
+}
+
+template<class Container>
+void test_non_transparent_contains(Container c) {
+  int conversions = 0;
+  assert(c.contains(SearchedType<int>(1, &conversions)));
+  assert(conversions == 1);
+  assert(c.contains(SearchedType<int>(2, &conversions)));
+  assert(conversions == 2);
+  assert(!c.contains(SearchedType<int>(3, &conversions)));
+  assert(conversions == 3);
+}
+
+template<class Container>
+void test_transparent_equal_range(Container c) {
+  int conversions = 0;
+  auto iters = c.equal_range(SearchedType<int>(1, &conversions));
+  assert(std::distance(iters.first, iters.second) > 0);
+  iters = c.equal_range(SearchedType<int>(2, &conversions));
+  assert(std::distance(iters.first, iters.second) > 0);
+  iters = c.equal_range(SearchedType<int>(3, &conversions));
+  assert(std::distance(iters.first, iters.second) == 0);
+  assert(conversions == 0);
+}
+
+template<class Container>
+void test_non_transparent_equal_range(Container c) {
+  int conversions = 0;
+  auto iters = c.equal_range(SearchedType<int>(1, &conversions));
+  assert(std::distance(iters.first, iters.second) > 0);
+  assert(conversions == 1);
+  iters = c.equal_range(SearchedType<int>(2, &conversions));
+  assert(std::distance(iters.first, iters.second) > 0);
+  assert(conversions == 2);
+  iters = c.equal_range(SearchedType<int>(3, &conversions));
+  assert(std::distance(iters.first, iters.second) == 0);
+  assert(conversions == 3);
+}
+
+#endif // TEST_STD_VER > 17
+
+#endif // TEST_TRANSPARENT_UNORDERED_H
diff --git a/app/src/main/cpp/libcxx/test/support/test_workarounds.h b/app/src/main/cpp/libcxx/test/support/test_workarounds.h
new file mode 100644
index 0000000..8417dca
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/test_workarounds.h
@@ -0,0 +1,28 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TEST_WORKAROUNDS_H
+#define SUPPORT_TEST_WORKAROUNDS_H
+
+#include "test_macros.h"
+
+#if defined(TEST_COMPILER_EDG)
+# define TEST_WORKAROUND_EDG_EXPLICIT_CONSTEXPR // VSO-424280
+#endif
+
+#ifdef TEST_COMPILER_MSVC
+# if _MSC_VER < 1927
+#  define TEST_WORKAROUND_MSVC_BROKEN_IS_TRIVIALLY_COPYABLE // VSO-117743
+# endif
+# ifndef _MSC_EXTENSIONS
+#  define TEST_WORKAROUND_MSVC_BROKEN_ZA_CTOR_CHECK // VSO-119998
+# endif
+#endif
+
+#endif // SUPPORT_TEST_WORKAROUNDS_H
diff --git a/app/src/main/cpp/libcxx/test/support/truncate_fp.h b/app/src/main/cpp/libcxx/test/support/truncate_fp.h
new file mode 100644
index 0000000..1ac959e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/truncate_fp.h
@@ -0,0 +1,22 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+inline long double truncate_fp(long double val) {
+  volatile long double sink = val;
+  return sink;
+}
+
+inline double truncate_fp(double val) {
+  volatile double sink = val;
+  return sink;
+}
+
+inline float truncate_fp(float val) {
+  volatile float sink = val;
+  return sink;
+}
diff --git a/app/src/main/cpp/libcxx/test/support/type_algorithms.h b/app/src/main/cpp/libcxx/test/support/type_algorithms.h
new file mode 100644
index 0000000..823978b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_algorithms.h
@@ -0,0 +1,105 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TYPE_ALGORITHMS_H
+#define TEST_SUPPORT_TYPE_ALGORITHMS_H
+
+#include <type_traits>
+
+#include "test_macros.h"
+
+namespace meta {
+template <class... Types>
+struct type_list {};
+
+// concatenates N type_lists to one (for N >= 1)
+template <class...>
+struct concatenate;
+
+template <class... Types>
+using concatenate_t = typename concatenate<Types...>::type;
+
+// for_each takes a type_list calls f with each element as the first template argument
+template <class... Types, class Functor>
+TEST_CONSTEXPR_CXX14 void for_each(type_list<Types...>, Functor f);
+
+// impl
+template <class... Types>
+struct concatenate<type_list<Types...> > {
+  using type = type_list<Types...>;
+};
+
+template <class... Types1, class... Types2>
+struct concatenate<type_list<Types1...>, type_list<Types2...> > {
+  using type = type_list<Types1..., Types2...>;
+};
+
+template <class... Types1, class... Types2, class... Rest>
+struct concatenate<type_list<Types1...>, type_list<Types2...>, Rest...> {
+  using type = concatenate_t<type_list<Types1..., Types2...>, Rest...>;
+};
+
+template <class... Types>
+TEST_CONSTEXPR_CXX14 void swallow(Types...) {}
+
+template <class... Types, class Functor>
+TEST_CONSTEXPR_CXX14 void for_each(type_list<Types...>, Functor f) {
+  swallow((f.template operator()<Types>(), 0)...);
+}
+
+// type categories defined in [basic.fundamental] plus extensions (without CV-qualifiers)
+
+using character_types =
+    type_list<char
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+              ,
+              wchar_t
+#endif
+#ifndef TEST_HAS_NO_CHAR8_T
+              ,
+              char8_t
+#endif
+#if TEST_STD_VER >= 11
+              ,
+              char16_t,
+              char32_t
+#endif
+              >;
+
+using signed_integer_types =
+    type_list<signed char,
+              short,
+              int,
+              long,
+              long long
+#ifndef TEST_HAS_NO_INT128
+              ,
+              __int128_t
+#endif
+              >;
+
+using unsigned_integer_types =
+    type_list<unsigned char,
+              unsigned short,
+              unsigned int,
+              unsigned long,
+              unsigned long long
+#ifndef TEST_HAS_NO_INT128
+              ,
+              __uint128_t
+#endif
+              >;
+
+using integral_types = concatenate_t<character_types, signed_integer_types, unsigned_integer_types, type_list<bool> >;
+
+using floating_point_types = type_list<float, double, long double>;
+
+using arithmetic_types = concatenate_t<integral_types, floating_point_types>;
+} // namespace meta
+
+#endif // TEST_SUPPORT_TYPE_ALGORITHMS_H
diff --git a/app/src/main/cpp/libcxx/test/support/type_classification/copyable.h b/app/src/main/cpp/libcxx/test/support/type_classification/copyable.h
new file mode 100644
index 0000000..0c30571
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_classification/copyable.h
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TYPE_CLASSIFICATION_COPYABLE_H
+#define TEST_SUPPORT_TYPE_CLASSIFICATION_COPYABLE_H
+
+#include <memory>
+
+#include "movable.h"
+
+struct no_copy_constructor {
+  no_copy_constructor() = default;
+
+  no_copy_constructor(no_copy_constructor const&) = delete;
+  no_copy_constructor(no_copy_constructor&&) = default;
+};
+
+struct no_copy_assignment {
+  no_copy_assignment() = default;
+
+  no_copy_assignment& operator=(no_copy_assignment const&) = delete;
+  no_copy_assignment& operator=(no_copy_assignment&&) = default;
+};
+
+struct no_copy_assignment_mutable {
+  no_copy_assignment_mutable() = default;
+
+  no_copy_assignment_mutable&
+  operator=(no_copy_assignment_mutable const&) = default;
+  no_copy_assignment_mutable& operator=(no_copy_assignment_mutable&) = delete;
+  no_copy_assignment_mutable& operator=(no_copy_assignment_mutable&&) = default;
+};
+
+struct derived_from_noncopyable : std::unique_ptr<int> {};
+
+struct has_noncopyable {
+  std::unique_ptr<int> x;
+};
+
+struct const_copy_assignment {
+  const_copy_assignment() = default;
+
+  const_copy_assignment(const_copy_assignment const&);
+  const_copy_assignment(const_copy_assignment&&);
+
+  const_copy_assignment& operator=(const_copy_assignment&&);
+  const_copy_assignment const& operator=(const_copy_assignment const&) const;
+};
+
+struct volatile_copy_assignment {
+  volatile_copy_assignment() = default;
+
+  volatile_copy_assignment(volatile_copy_assignment volatile&);
+  volatile_copy_assignment(volatile_copy_assignment volatile&&);
+
+  volatile_copy_assignment& operator=(volatile_copy_assignment&&);
+  volatile_copy_assignment volatile&
+  operator=(volatile_copy_assignment const&) volatile;
+};
+
+struct cv_copy_assignment {
+  cv_copy_assignment() = default;
+
+  cv_copy_assignment(cv_copy_assignment const volatile&);
+  cv_copy_assignment(cv_copy_assignment const volatile&&);
+
+  cv_copy_assignment const volatile&
+  operator=(cv_copy_assignment const volatile&) const volatile;
+  cv_copy_assignment const volatile&
+  operator=(cv_copy_assignment const volatile&&) const volatile;
+};
+
+#endif // TEST_SUPPORT_TYPE_CLASSIFICATION_COPYABLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/type_classification/movable.h b/app/src/main/cpp/libcxx/test/support/type_classification/movable.h
new file mode 100644
index 0000000..de49eee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_classification/movable.h
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TYPE_CLASSIFICATION_MOVABLE_H
+#define TEST_SUPPORT_TYPE_CLASSIFICATION_MOVABLE_H
+
+struct has_const_member {
+  int const x;
+};
+
+struct has_volatile_member {
+  int volatile x;
+};
+
+struct has_cv_member {
+  int const volatile x;
+};
+
+struct has_lvalue_reference_member {
+  int& x;
+};
+
+struct has_rvalue_reference_member {
+  int&& x;
+};
+
+struct has_array_member {
+  int x[5];
+};
+
+struct has_function_ref_member {
+  int (&f)();
+};
+
+struct cpp03_friendly {
+  cpp03_friendly(cpp03_friendly const&);
+  cpp03_friendly& operator=(cpp03_friendly const&);
+};
+
+struct const_move_ctor {
+  const_move_ctor(const_move_ctor const&&);
+  const_move_ctor& operator=(const_move_ctor&&);
+};
+
+struct volatile_move_ctor {
+  volatile_move_ctor(volatile_move_ctor volatile&&);
+  volatile_move_ctor& operator=(volatile_move_ctor&&);
+};
+
+struct cv_move_ctor {
+  cv_move_ctor(cv_move_ctor const volatile&&);
+  cv_move_ctor& operator=(cv_move_ctor&&);
+};
+
+struct multi_param_move_ctor {
+  multi_param_move_ctor(multi_param_move_ctor&&, int = 0);
+  multi_param_move_ctor& operator=(multi_param_move_ctor&&);
+};
+
+struct not_quite_multi_param_move_ctor {
+  not_quite_multi_param_move_ctor(not_quite_multi_param_move_ctor&&, int);
+  not_quite_multi_param_move_ctor& operator=(not_quite_multi_param_move_ctor&&);
+};
+
+struct copy_with_mutable_parameter {
+  copy_with_mutable_parameter(copy_with_mutable_parameter&);
+  copy_with_mutable_parameter&
+  operator=(copy_with_mutable_parameter&);
+};
+
+struct const_move_assignment {
+  const_move_assignment& operator=(const_move_assignment&&) const;
+};
+
+struct volatile_move_assignment {
+  const_move_assignment& operator=(const_move_assignment&&) volatile;
+};
+
+struct cv_move_assignment {
+  cv_move_assignment& operator=(cv_move_assignment&&) const volatile;
+};
+
+struct const_move_assign_and_traditional_move_assign {
+  const_move_assign_and_traditional_move_assign&
+  operator=(const_move_assign_and_traditional_move_assign&&);
+  const_move_assign_and_traditional_move_assign&
+  operator=(const_move_assign_and_traditional_move_assign&&) const;
+};
+
+struct volatile_move_assign_and_traditional_move_assign {
+  volatile_move_assign_and_traditional_move_assign&
+  operator=(volatile_move_assign_and_traditional_move_assign&&);
+  volatile_move_assign_and_traditional_move_assign&
+  operator=(volatile_move_assign_and_traditional_move_assign&&) volatile;
+};
+
+struct cv_move_assign_and_traditional_move_assign {
+  cv_move_assign_and_traditional_move_assign&
+  operator=(cv_move_assign_and_traditional_move_assign&&);
+  cv_move_assign_and_traditional_move_assign&
+  operator=(cv_move_assign_and_traditional_move_assign&&) const volatile;
+};
+
+struct const_move_assign_and_default_ops {
+  const_move_assign_and_default_ops(const_move_assign_and_default_ops const&) =
+      default;
+  const_move_assign_and_default_ops(const_move_assign_and_default_ops&&) =
+      default;
+  const_move_assign_and_default_ops&
+  operator=(const_move_assign_and_default_ops const&) = default;
+  const_move_assign_and_default_ops&
+  operator=(const_move_assign_and_default_ops&&) = default;
+  const_move_assign_and_default_ops&
+  operator=(const_move_assign_and_default_ops&&) const;
+};
+
+struct volatile_move_assign_and_default_ops {
+  volatile_move_assign_and_default_ops(
+      volatile_move_assign_and_default_ops const&) = default;
+  volatile_move_assign_and_default_ops(volatile_move_assign_and_default_ops&&) =
+      default;
+  volatile_move_assign_and_default_ops&
+  operator=(volatile_move_assign_and_default_ops const&) = default;
+  volatile_move_assign_and_default_ops&
+  operator=(volatile_move_assign_and_default_ops&&) = default;
+  volatile_move_assign_and_default_ops&
+  operator=(volatile_move_assign_and_default_ops&&) volatile;
+};
+
+struct cv_move_assign_and_default_ops {
+  cv_move_assign_and_default_ops(cv_move_assign_and_default_ops const&) =
+      default;
+  cv_move_assign_and_default_ops(cv_move_assign_and_default_ops&&) = default;
+  cv_move_assign_and_default_ops&
+  operator=(cv_move_assign_and_default_ops const&) = default;
+  cv_move_assign_and_default_ops&
+  operator=(cv_move_assign_and_default_ops&&) = default;
+  cv_move_assign_and_default_ops&
+  operator=(cv_move_assign_and_default_ops&&) const volatile;
+};
+
+struct deleted_assignment_from_const_rvalue {
+  deleted_assignment_from_const_rvalue(
+      deleted_assignment_from_const_rvalue const&);
+  deleted_assignment_from_const_rvalue(deleted_assignment_from_const_rvalue&&);
+  deleted_assignment_from_const_rvalue&
+  operator=(const deleted_assignment_from_const_rvalue&);
+  deleted_assignment_from_const_rvalue&
+  operator=(deleted_assignment_from_const_rvalue&&);
+  deleted_assignment_from_const_rvalue&
+  operator=(const deleted_assignment_from_const_rvalue&&) = delete;
+};
+
+#endif // TEST_SUPPORT_TYPE_CLASSIFICATION_MOVABLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/type_classification/moveconstructible.h b/app/src/main/cpp/libcxx/test/support/type_classification/moveconstructible.h
new file mode 100644
index 0000000..9409e9c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_classification/moveconstructible.h
@@ -0,0 +1,75 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TYPE_CLASSIFICATION_MOVECONSTRUCTIBLE_H
+#define TEST_SUPPORT_TYPE_CLASSIFICATION_MOVECONSTRUCTIBLE_H
+
+struct HasDefaultOps {};
+
+struct CustomMoveCtor {
+  CustomMoveCtor(CustomMoveCtor&&) noexcept;
+};
+
+struct MoveOnly {
+  MoveOnly(MoveOnly&&) noexcept = default;
+  MoveOnly& operator=(MoveOnly&&) noexcept = default;
+  MoveOnly(const MoveOnly&) = delete;
+  MoveOnly& operator=(const MoveOnly&) = default;
+};
+
+struct CustomMoveAssign {
+  CustomMoveAssign(CustomMoveAssign&&) noexcept;
+  CustomMoveAssign& operator=(CustomMoveAssign&&) noexcept;
+};
+
+struct DeletedMoveCtor {
+  DeletedMoveCtor(DeletedMoveCtor&&) = delete;
+  DeletedMoveCtor& operator=(DeletedMoveCtor&&) = default;
+};
+
+struct ImplicitlyDeletedMoveCtor {
+  DeletedMoveCtor X;
+};
+
+struct DeletedMoveAssign {
+  DeletedMoveAssign& operator=(DeletedMoveAssign&&) = delete;
+};
+
+struct ImplicitlyDeletedMoveAssign {
+  DeletedMoveAssign X;
+};
+
+class MemberLvalueReference {
+public:
+  MemberLvalueReference(int&);
+
+private:
+  int& X;
+};
+
+class MemberRvalueReference {
+public:
+  MemberRvalueReference(int&&);
+
+private:
+  int&& X;
+};
+
+struct NonMovable {
+  NonMovable() = default;
+  NonMovable(NonMovable&&) = delete;
+  NonMovable& operator=(NonMovable&&) = delete;
+};
+
+struct DerivedFromNonMovable : NonMovable {};
+
+struct HasANonMovable {
+  NonMovable X;
+};
+
+#endif // TEST_SUPPORT_TYPE_CLASSIFICATION_MOVECONSTRUCTIBLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/type_classification/semiregular.h b/app/src/main/cpp/libcxx/test/support/type_classification/semiregular.h
new file mode 100644
index 0000000..c383ac5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_classification/semiregular.h
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TYPE_CLASSIFICATION_H
+#define TEST_SUPPORT_TYPE_CLASSIFICATION_H
+
+#include "copyable.h"
+
+struct no_default_ctor {
+  no_default_ctor(int);
+};
+struct derived_from_non_default_initializable : no_default_ctor {};
+struct has_non_default_initializable {
+  no_default_ctor x;
+};
+
+struct deleted_default_ctor {
+  deleted_default_ctor() = delete;
+};
+struct derived_from_deleted_default_ctor : deleted_default_ctor {};
+struct has_deleted_default_ctor {
+  deleted_default_ctor x;
+};
+
+#endif // TEST_SUPPORT_TYPE_CLASSIFICATION_H
diff --git a/app/src/main/cpp/libcxx/test/support/type_classification/swappable.h b/app/src/main/cpp/libcxx/test/support/type_classification/swappable.h
new file mode 100644
index 0000000..e8d901c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_classification/swappable.h
@@ -0,0 +1,267 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_TYPE_CLASSIFICATION_SWAPPABLE_H
+#define TEST_SUPPORT_TYPE_CLASSIFICATION_SWAPPABLE_H
+
+#include <concepts>
+
+// `adl_swappable` indicates it's been swapped using ADL by maintaining a pointer to itself that
+// isn't a part of the exchange. This is well-formed since we say that two `adl_swappable` objects
+// are equal only if their respective `value` subobjects are equal and their respective `this`
+// subobjects store the addresses of those respective `adl_swappable` objects.
+class lvalue_adl_swappable {
+public:
+  lvalue_adl_swappable() = default;
+
+  constexpr lvalue_adl_swappable(int value) noexcept : value_(value) {}
+
+  constexpr lvalue_adl_swappable(lvalue_adl_swappable&& other) noexcept
+      : value_(std::move(other.value_)),
+        this_(this) {}
+
+  constexpr lvalue_adl_swappable(lvalue_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr lvalue_adl_swappable&
+  operator=(lvalue_adl_swappable other) noexcept {
+    value_ = other.value_;
+    return *this;
+  }
+
+  friend constexpr void swap(lvalue_adl_swappable& x,
+                             lvalue_adl_swappable& y) noexcept {
+    std::ranges::swap(x.value_, y.value_);
+  }
+
+  constexpr bool operator==(lvalue_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  lvalue_adl_swappable* this_ = this;
+};
+
+class lvalue_rvalue_adl_swappable {
+public:
+  lvalue_rvalue_adl_swappable() = default;
+
+  constexpr lvalue_rvalue_adl_swappable(int value) noexcept : value_(value) {}
+
+  constexpr
+  lvalue_rvalue_adl_swappable(lvalue_rvalue_adl_swappable&& other) noexcept
+      : value_(std::move(other.value_)),
+        this_(this) {}
+
+  constexpr
+  lvalue_rvalue_adl_swappable(lvalue_rvalue_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr lvalue_rvalue_adl_swappable&
+  operator=(lvalue_rvalue_adl_swappable other) noexcept {
+    value_ = other.value_;
+    return *this;
+  }
+
+  friend constexpr void swap(lvalue_rvalue_adl_swappable& x,
+                             lvalue_rvalue_adl_swappable&& y) noexcept {
+    std::ranges::swap(x.value_, y.value_);
+  }
+
+  constexpr bool
+  operator==(lvalue_rvalue_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  lvalue_rvalue_adl_swappable* this_ = this;
+};
+
+class rvalue_lvalue_adl_swappable {
+public:
+  rvalue_lvalue_adl_swappable() = default;
+
+  constexpr rvalue_lvalue_adl_swappable(int value) noexcept : value_(value) {}
+
+  constexpr
+  rvalue_lvalue_adl_swappable(rvalue_lvalue_adl_swappable&& other) noexcept
+      : value_(std::move(other.value_)),
+        this_(this) {}
+
+  constexpr
+  rvalue_lvalue_adl_swappable(rvalue_lvalue_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr rvalue_lvalue_adl_swappable&
+  operator=(rvalue_lvalue_adl_swappable other) noexcept {
+    value_ = other.value_;
+    return *this;
+  }
+
+  friend constexpr void swap(rvalue_lvalue_adl_swappable&& x,
+                             rvalue_lvalue_adl_swappable& y) noexcept {
+    std::ranges::swap(x.value_, y.value_);
+  }
+
+  constexpr bool
+  operator==(rvalue_lvalue_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  rvalue_lvalue_adl_swappable* this_ = this;
+};
+
+class rvalue_adl_swappable {
+public:
+  rvalue_adl_swappable() = default;
+
+  constexpr rvalue_adl_swappable(int value) noexcept : value_(value) {}
+
+  constexpr rvalue_adl_swappable(rvalue_adl_swappable&& other) noexcept
+      : value_(std::move(other.value_)),
+        this_(this) {}
+
+  constexpr rvalue_adl_swappable(rvalue_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr rvalue_adl_swappable&
+  operator=(rvalue_adl_swappable other) noexcept {
+    value_ = other.value_;
+    return *this;
+  }
+
+  friend constexpr void swap(rvalue_adl_swappable&& x,
+                             rvalue_adl_swappable&& y) noexcept {
+    std::ranges::swap(x.value_, y.value_);
+  }
+
+  constexpr bool operator==(rvalue_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  rvalue_adl_swappable* this_ = this;
+};
+
+class non_move_constructible_adl_swappable {
+public:
+  non_move_constructible_adl_swappable() = default;
+
+  constexpr non_move_constructible_adl_swappable(int value) noexcept
+      : value_(value) {}
+
+  constexpr non_move_constructible_adl_swappable(
+      non_move_constructible_adl_swappable&& other) noexcept
+      : value_(std::move(other.value_)),
+        this_(this) {}
+
+  constexpr non_move_constructible_adl_swappable(
+      non_move_constructible_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr non_move_constructible_adl_swappable&
+  operator=(non_move_constructible_adl_swappable other) noexcept {
+    value_ = other.value_;
+    return *this;
+  }
+
+  friend constexpr void swap(non_move_constructible_adl_swappable& x,
+                             non_move_constructible_adl_swappable& y) noexcept {
+    std::ranges::swap(x.value_, y.value_);
+  }
+
+  constexpr bool
+  operator==(non_move_constructible_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  non_move_constructible_adl_swappable* this_ = this;
+};
+
+class non_move_assignable_adl_swappable {
+public:
+  non_move_assignable_adl_swappable() = default;
+
+  constexpr non_move_assignable_adl_swappable(int value) noexcept
+      : value_(value) {}
+
+  non_move_assignable_adl_swappable(non_move_assignable_adl_swappable&& other) =
+      delete;
+
+  constexpr non_move_assignable_adl_swappable(
+      non_move_assignable_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr non_move_assignable_adl_swappable&
+  operator=(non_move_assignable_adl_swappable&& other) noexcept = delete;
+
+  friend constexpr void swap(non_move_assignable_adl_swappable& x,
+                             non_move_assignable_adl_swappable& y) noexcept {
+    std::ranges::swap(x.value_, y.value_);
+  }
+
+  constexpr bool
+  operator==(non_move_assignable_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  non_move_assignable_adl_swappable* this_ = this;
+};
+
+class throwable_adl_swappable {
+public:
+  throwable_adl_swappable() = default;
+
+  constexpr throwable_adl_swappable(int value) noexcept : value_(value) {}
+
+  constexpr throwable_adl_swappable(throwable_adl_swappable&& other) noexcept
+      : value_(std::move(other.value_)),
+        this_(this) {}
+
+  constexpr
+  throwable_adl_swappable(throwable_adl_swappable const& other) noexcept
+      : value_(other.value_),
+        this_(this) {}
+
+  constexpr throwable_adl_swappable&
+  operator=(throwable_adl_swappable other) noexcept {
+    value_ = other.value_;
+    return *this;
+  }
+
+  friend constexpr void swap(throwable_adl_swappable& X,
+                             throwable_adl_swappable& Y) noexcept(false) {
+    std::ranges::swap(X.value_, Y.value_);
+  }
+
+  constexpr bool
+  operator==(throwable_adl_swappable const& other) const noexcept {
+    return value_ == other.value_ && this_ == this && other.this_ == &other;
+  }
+
+private:
+  int value_{};
+  throwable_adl_swappable* this_ = this;
+};
+
+#endif // TEST_SUPPORT_TYPE_CLASSIFICATION_SWAPPABLE_H
diff --git a/app/src/main/cpp/libcxx/test/support/type_id.h b/app/src/main/cpp/libcxx/test/support/type_id.h
new file mode 100644
index 0000000..5eb4480
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/type_id.h
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_TYPE_ID_H
+#define SUPPORT_TYPE_ID_H
+
+#include <string>
+#include <cassert>
+
+#include "test_macros.h"
+
+#if TEST_STD_VER < 11
+#error This header requires C++11 or greater
+#endif
+
+// TypeID - Represent a unique identifier for a type. TypeID allows equality
+// comparisons between different types.
+struct TypeID {
+  friend bool operator==(TypeID const& LHS, TypeID const& RHS)
+  {return LHS.m_id == RHS.m_id; }
+  friend bool operator!=(TypeID const& LHS, TypeID const& RHS)
+  {return LHS.m_id != RHS.m_id; }
+
+  std::string name() const {
+    return m_id;
+  }
+
+private:
+  explicit constexpr TypeID(const char* xid) : m_id(xid) {}
+
+  TypeID(const TypeID&) = delete;
+  TypeID& operator=(TypeID const&) = delete;
+
+  const char* const m_id;
+  template <class T> friend TypeID const& makeTypeIDImp();
+};
+
+// makeTypeID - Return the TypeID for the specified type 'T'.
+template <class T>
+inline TypeID const& makeTypeIDImp() {
+#ifdef _MSC_VER
+  static const TypeID id(__FUNCSIG__);
+#else
+  static const TypeID id(__PRETTY_FUNCTION__);
+#endif // _MSC_VER
+  return id;
+}
+
+template <class T>
+struct TypeWrapper {};
+
+template <class T>
+inline  TypeID const& makeTypeID() {
+  return makeTypeIDImp<TypeWrapper<T>>();
+}
+
+template <class ...Args>
+struct ArgumentListID {};
+
+// makeArgumentID - Create and return a unique identifier for a given set
+// of arguments.
+template <class ...Args>
+inline  TypeID const& makeArgumentID() {
+  return makeTypeIDImp<ArgumentListID<Args...>>();
+}
+
+#endif // SUPPORT_TYPE_ID_H
diff --git a/app/src/main/cpp/libcxx/test/support/unique_ptr_test_helper.h b/app/src/main/cpp/libcxx/test/support/unique_ptr_test_helper.h
new file mode 100644
index 0000000..633ea97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/unique_ptr_test_helper.h
@@ -0,0 +1,159 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_UNIQUE_PTR_TEST_HELPER_H
+#define TEST_SUPPORT_UNIQUE_PTR_TEST_HELPER_H
+
+#include <memory>
+#include <type_traits>
+
+#include "test_macros.h"
+#include "deleter_types.h"
+
+struct A {
+  static int count;
+  TEST_CONSTEXPR_CXX23 A() {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 A(const A&) {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 virtual ~A() {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      --count;
+  }
+};
+
+int A::count = 0;
+
+struct B : public A {
+  static int count;
+  TEST_CONSTEXPR_CXX23 B() {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 B(const B& other) : A(other) {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      ++count;
+  }
+  TEST_CONSTEXPR_CXX23 virtual ~B() {
+    if (!TEST_IS_CONSTANT_EVALUATED)
+      --count;
+  }
+};
+
+int B::count = 0;
+
+template <class T>
+TEST_CONSTEXPR_CXX23 typename std::enable_if<!std::is_array<T>::value, T*>::type newValue(int num_elements) {
+  assert(num_elements == 1);
+  return new T;
+}
+
+template <class T>
+TEST_CONSTEXPR_CXX23 typename std::enable_if<std::is_array<T>::value, typename std::remove_all_extents<T>::type*>::type
+newValue(int num_elements) {
+  typedef typename std::remove_all_extents<T>::type VT;
+  assert(num_elements >= 1);
+  return new VT[num_elements];
+}
+
+struct IncompleteType;
+
+void checkNumIncompleteTypeAlive(int i);
+int getNumIncompleteTypeAlive();
+IncompleteType* getNewIncomplete();
+IncompleteType* getNewIncompleteArray(int size);
+
+#if TEST_STD_VER >= 11
+template <class ThisT, class... Args>
+struct args_is_this_type : std::false_type {};
+
+template <class ThisT, class A1>
+struct args_is_this_type<ThisT, A1> : std::is_same<ThisT, typename std::decay<A1>::type> {};
+#endif
+
+template <class IncompleteT = IncompleteType, class Del = std::default_delete<IncompleteT> >
+struct StoresIncomplete {
+  static_assert(
+      (std::is_same<IncompleteT, IncompleteType>::value || std::is_same<IncompleteT, IncompleteType[]>::value), "");
+
+  std::unique_ptr<IncompleteT, Del> m_ptr;
+
+#if TEST_STD_VER >= 11
+  StoresIncomplete(StoresIncomplete const&) = delete;
+  StoresIncomplete(StoresIncomplete&&)      = default;
+
+  template <class... Args>
+  StoresIncomplete(Args&&... args) : m_ptr(std::forward<Args>(args)...) {
+    static_assert(!args_is_this_type<StoresIncomplete, Args...>::value, "");
+  }
+#else
+
+private:
+  StoresIncomplete();
+  StoresIncomplete(StoresIncomplete const&);
+
+public:
+#endif
+
+  ~StoresIncomplete();
+
+  IncompleteType* get() const { return m_ptr.get(); }
+  Del& get_deleter() { return m_ptr.get_deleter(); }
+};
+
+#if TEST_STD_VER >= 11
+template <class IncompleteT = IncompleteType, class Del = std::default_delete<IncompleteT>, class... Args>
+void doIncompleteTypeTest(int expect_alive, Args&&... ctor_args) {
+  checkNumIncompleteTypeAlive(expect_alive);
+  {
+    StoresIncomplete<IncompleteT, Del> sptr(std::forward<Args>(ctor_args)...);
+    checkNumIncompleteTypeAlive(expect_alive);
+    if (expect_alive == 0)
+      assert(sptr.get() == nullptr);
+    else
+      assert(sptr.get() != nullptr);
+  }
+  checkNumIncompleteTypeAlive(0);
+}
+#endif
+
+#define INCOMPLETE_TEST_EPILOGUE()                                                                                     \
+  int is_incomplete_test_anchor = is_incomplete_test();                                                                \
+                                                                                                                       \
+  struct IncompleteType {                                                                                              \
+    static int count;                                                                                                  \
+    IncompleteType() { ++count; }                                                                                      \
+    ~IncompleteType() { --count; }                                                                                     \
+  };                                                                                                                   \
+                                                                                                                       \
+  int IncompleteType::count = 0;                                                                                       \
+                                                                                                                       \
+  void checkNumIncompleteTypeAlive(int i) { assert(IncompleteType::count == i); }                                      \
+  int getNumIncompleteTypeAlive() { return IncompleteType::count; }                                                    \
+  IncompleteType* getNewIncomplete() { return new IncompleteType; }                                                    \
+  IncompleteType* getNewIncompleteArray(int size) { return new IncompleteType[size]; }                                 \
+                                                                                                                       \
+  template <class IncompleteT, class Del>                                                                              \
+  StoresIncomplete<IncompleteT, Del>::~StoresIncomplete() {}
+#
+
+#if TEST_STD_VER >= 11
+#  define DEFINE_AND_RUN_IS_INCOMPLETE_TEST(...)                                                                       \
+    static int is_incomplete_test() { __VA_ARGS__ return 0; }                                                          \
+    INCOMPLETE_TEST_EPILOGUE()
+#else
+#  define DEFINE_AND_RUN_IS_INCOMPLETE_TEST(...)                                                                       \
+    static int is_incomplete_test() { return 0; }                                                                      \
+    INCOMPLETE_TEST_EPILOGUE()
+#endif
+
+#endif // TEST_SUPPORT_UNIQUE_PTR_TEST_HELPER_H
diff --git a/app/src/main/cpp/libcxx/test/support/user_defined_integral.h b/app/src/main/cpp/libcxx/test/support/user_defined_integral.h
new file mode 100644
index 0000000..0012350
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/user_defined_integral.h
@@ -0,0 +1,54 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_USER_DEFINED_INTEGRAL_H
+#define SUPPORT_USER_DEFINED_INTEGRAL_H
+
+#include "test_macros.h"
+
+template <class T>
+struct UserDefinedIntegral
+{
+    TEST_CONSTEXPR_CXX14 UserDefinedIntegral() : value(0) {}
+    TEST_CONSTEXPR_CXX14 UserDefinedIntegral(T v) : value(v) {}
+    TEST_CONSTEXPR_CXX14 operator T() const { return value; }
+    T value;
+};
+
+// Poison the arithmetic and comparison operations
+template <class T, class U>
+void operator+(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator-(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator*(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator/(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator==(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator!=(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator<(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator>(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator<=(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+template <class T, class U>
+void operator>=(UserDefinedIntegral<T>, UserDefinedIntegral<U>);
+
+#endif // SUPPORT_USER_DEFINED_INTEGRAL_H
diff --git a/app/src/main/cpp/libcxx/test/support/uses_alloc_types.h b/app/src/main/cpp/libcxx/test/support/uses_alloc_types.h
new file mode 100644
index 0000000..9403572
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/uses_alloc_types.h
@@ -0,0 +1,389 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef USES_ALLOC_TYPES_H
+#define USES_ALLOC_TYPES_H
+
+#include <cassert>
+#include <cstdlib>
+#include <memory>
+
+#include "test_macros.h"
+#include "test_workarounds.h"
+#include "type_id.h"
+
+// There are two forms of uses-allocator construction:
+//   (1) UA_AllocArg: 'T(allocator_arg_t, Alloc const&, Args&&...)'
+//   (2) UA_AllocLast: 'T(Args&&..., Alloc const&)'
+// 'UA_None' represents non-uses allocator construction.
+enum class UsesAllocatorType {
+  UA_None = 0,
+  UA_AllocArg = 2,
+  UA_AllocLast = 4
+};
+constexpr UsesAllocatorType UA_None = UsesAllocatorType::UA_None;
+constexpr UsesAllocatorType UA_AllocArg = UsesAllocatorType::UA_AllocArg;
+constexpr UsesAllocatorType UA_AllocLast = UsesAllocatorType::UA_AllocLast;
+
+inline const char* toString(UsesAllocatorType UA) {
+    switch (UA) {
+    case UA_None:
+        return "UA_None";
+    case UA_AllocArg:
+        return "UA_AllocArg";
+    case UA_AllocLast:
+        return "UA_AllocLast";
+    default:
+    std::abort();
+    }
+}
+
+template <class Alloc, std::size_t N>
+class UsesAllocatorV1;
+    // Implements form (1) of uses-allocator construction from the specified
+    // 'Alloc' type and exactly 'N' additional arguments. It also provides
+    // non-uses allocator construction from 'N' arguments. This test type
+    // blows up when form (2) of uses-allocator is even considered.
+
+template <class Alloc, std::size_t N>
+class UsesAllocatorV2;
+    // Implements form (2) of uses-allocator construction from the specified
+    // 'Alloc' type and exactly 'N' additional arguments. It also provides
+    // non-uses allocator construction from 'N' arguments.
+
+template <class Alloc, std::size_t N>
+class UsesAllocatorV3;
+    // Implements both form (1) and (2) of uses-allocator construction from
+    // the specified 'Alloc' type and exactly 'N' additional arguments. It also
+    // provides non-uses allocator construction from 'N' arguments.
+
+template <class Alloc, std::size_t>
+class NotUsesAllocator;
+    // Implements both form (1) and (2) of uses-allocator construction from
+    // the specified 'Alloc' type and exactly 'N' additional arguments. It also
+    // provides non-uses allocator construction from 'N' arguments. However
+    // 'NotUsesAllocator' never provides a 'allocator_type' typedef so it is
+    // never automatically uses-allocator constructed.
+
+
+template <class ...ArgTypes, class TestType>
+bool checkConstruct(TestType& value, UsesAllocatorType form,
+                    typename TestType::CtorAlloc const& alloc)
+    // Check that 'value' was constructed using the specified 'form' of
+    // construction and with the specified 'ArgTypes...'. Additionally
+    // check that 'value' was constructed using the specified 'alloc'.
+{
+    if (form == UA_None) {
+        return value.template checkConstruct<ArgTypes&&...>(form);
+    } else {
+        return value.template checkConstruct<ArgTypes&&...>(form, alloc);
+    }
+}
+
+
+template <class ...ArgTypes, class TestType>
+bool checkConstruct(TestType& value, UsesAllocatorType form) {
+    return value.template checkConstruct<ArgTypes&&...>(form);
+}
+
+template <class TestType>
+bool checkConstructionEquiv(TestType& T, TestType& U)
+    // check that 'T' and 'U' where initialized in the exact same manner.
+{
+    return T.checkConstructEquiv(U);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+namespace detail {
+
+template <bool IsZero, size_t N, class ArgList, class ...Args>
+struct TakeNImp;
+
+template <class ArgList, class ...Args>
+struct TakeNImp<true, 0, ArgList, Args...> {
+  typedef ArgList type;
+};
+
+template <size_t N, class ...A1, class F, class ...R>
+struct TakeNImp<false, N, ArgumentListID<A1...>, F, R...>
+    : TakeNImp<N-1 == 0, N - 1, ArgumentListID<A1..., F>, R...> {};
+
+template <size_t N, class ...Args>
+struct TakeNArgs : TakeNImp<N == 0, N, ArgumentListID<>, Args...> {};
+
+template <class T>
+struct Identity { typedef T type; };
+
+template <class T>
+using IdentityT = typename Identity<T>::type;
+
+template <bool Value>
+using EnableIfB = typename std::enable_if<Value, bool>::type;
+
+} // end namespace detail
+
+// FIXME: UsesAllocatorTestBase needs some special logic to deal with
+// polymorphic allocators. However we don't want to include
+// <experimental/memory_resource> in this header. Therefore in order
+// to inject this behavior later we use a trait.
+// See test_memory_resource.h for more info.
+template <class Alloc>
+struct TransformErasedTypeAlloc {
+  using type = Alloc;
+};
+
+using detail::EnableIfB;
+
+struct AllocLastTag {};
+
+template <class Alloc, bool = std::is_default_constructible<Alloc>::value>
+struct UsesAllocatorTestBaseStorage {
+    Alloc allocator;
+    UsesAllocatorTestBaseStorage() = default;
+    UsesAllocatorTestBaseStorage(Alloc const& a) : allocator(a) {}
+    const Alloc* get_allocator() const { return &allocator; }
+};
+
+template <class Alloc>
+struct UsesAllocatorTestBaseStorage<Alloc, false> {
+  union {
+    char dummy;
+    Alloc alloc;
+  };
+  bool has_alloc = false;
+
+  UsesAllocatorTestBaseStorage() : dummy(), has_alloc(false) {}
+  UsesAllocatorTestBaseStorage(Alloc const& a) : alloc(a), has_alloc(true) {}
+  ~UsesAllocatorTestBaseStorage() {
+      if (has_alloc)
+          alloc.~Alloc();
+  }
+
+  Alloc const* get_allocator() const {
+      if (!has_alloc)
+          return nullptr;
+      return &alloc;
+  }
+};
+
+template <class Self, class Alloc>
+struct UsesAllocatorTestBase {
+public:
+    using CtorAlloc = typename TransformErasedTypeAlloc<Alloc>::type;
+
+    template <class ...ArgTypes>
+    bool checkConstruct(UsesAllocatorType expectType) const {
+        auto expectArgs = &makeArgumentID<ArgTypes...>();
+        if (expectType != constructor_called)
+            return false;
+        if (args_id != expectArgs)
+            return false;
+        return true;
+    }
+
+    template <class ...ArgTypes>
+    bool checkConstruct(UsesAllocatorType expectType,
+                        CtorAlloc const& expectAlloc) const {
+        auto ExpectID = &makeArgumentID<ArgTypes...>() ;
+        if (expectType != constructor_called)
+            return false;
+        if (args_id != ExpectID)
+            return false;
+        if (!has_alloc() || expectAlloc != *get_alloc())
+            return false;
+        return true;
+    }
+
+    bool checkConstructEquiv(UsesAllocatorTestBase& O) const {
+        if (has_alloc() != O.has_alloc())
+            return false;
+        if (constructor_called != O.constructor_called)
+            return false;
+        if (args_id != O.args_id)
+            return false;
+        if (has_alloc() && *get_alloc() != *O.get_alloc())
+            return false;
+        return true;
+    }
+
+protected:
+    explicit UsesAllocatorTestBase(const TypeID* aid)
+        : args_id(aid), constructor_called(UA_None), alloc_store()
+    {}
+
+    UsesAllocatorTestBase(UsesAllocatorTestBase const&)
+        : args_id(&makeArgumentID<Self const&>()), constructor_called(UA_None),
+          alloc_store()
+    {}
+
+    UsesAllocatorTestBase(UsesAllocatorTestBase&&)
+        : args_id(&makeArgumentID<Self&&>()), constructor_called(UA_None),
+          alloc_store()
+    {}
+
+    template <class ...Args>
+    UsesAllocatorTestBase(std::allocator_arg_t, CtorAlloc const& a, Args&&...)
+        : args_id(&makeArgumentID<Args&&...>()),
+          constructor_called(UA_AllocArg),
+          alloc_store(a)
+    {}
+
+    template <class ...Args, class ArgsIDL = detail::TakeNArgs<sizeof...(Args) - 1, Args&&...>>
+    UsesAllocatorTestBase(AllocLastTag, Args&&... args)
+        : args_id(&makeTypeIDImp<typename ArgsIDL::type>()),
+          constructor_called(UA_AllocLast),
+          alloc_store(UsesAllocatorTestBase::getAllocatorFromPack(
+            typename ArgsIDL::type{},
+            std::forward<Args>(args)...))
+    {
+    }
+
+private:
+    template <class ...LArgs, class ...Args>
+    static CtorAlloc getAllocatorFromPack(ArgumentListID<LArgs...>, Args&&... args) {
+        return UsesAllocatorTestBase::getAllocatorFromPackImp<LArgs const&...>(args...);
+    }
+
+    template <class ...LArgs>
+    static CtorAlloc getAllocatorFromPackImp(
+        typename detail::Identity<LArgs>::type..., CtorAlloc const& alloc) {
+        return alloc;
+    }
+
+    bool has_alloc() const { return alloc_store.get_allocator() != nullptr; }
+    const CtorAlloc *get_alloc() const { return alloc_store.get_allocator(); }
+public:
+    const TypeID* args_id;
+    UsesAllocatorType constructor_called = UA_None;
+    UsesAllocatorTestBaseStorage<CtorAlloc> alloc_store;
+};
+
+template <class Alloc, size_t Arity>
+class UsesAllocatorV1 : public UsesAllocatorTestBase<UsesAllocatorV1<Alloc, Arity>, Alloc>
+{
+public:
+    typedef Alloc allocator_type;
+
+    using Base = UsesAllocatorTestBase<UsesAllocatorV1, Alloc>;
+    using CtorAlloc = typename Base::CtorAlloc;
+
+    UsesAllocatorV1() : Base(&makeArgumentID<>()) {}
+
+    UsesAllocatorV1(UsesAllocatorV1 const&)
+        : Base(&makeArgumentID<UsesAllocatorV1 const&>()) {}
+    UsesAllocatorV1(UsesAllocatorV1 &&)
+        : Base(&makeArgumentID<UsesAllocatorV1 &&>()) {}
+    // Non-Uses Allocator Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity> = false>
+    UsesAllocatorV1(Args&&...) : Base(&makeArgumentID<Args&&...>()) {}
+
+    // Uses Allocator Arg Ctor
+    template <class ...Args>
+    UsesAllocatorV1(std::allocator_arg_t tag, CtorAlloc const & a, Args&&... args)
+        : Base(tag, a, std::forward<Args>(args)...)
+    { }
+
+    // BLOWS UP: Uses Allocator Last Ctor
+    template <class First, class ...Args, EnableIfB<sizeof...(Args) == Arity> Dummy = false>
+    constexpr UsesAllocatorV1(First&&, Args&&...)
+    {
+        static_assert(!std::is_same<First, First>::value, "");
+    }
+};
+
+
+template <class Alloc, size_t Arity>
+class UsesAllocatorV2 : public UsesAllocatorTestBase<UsesAllocatorV2<Alloc, Arity>, Alloc>
+{
+public:
+    typedef Alloc allocator_type;
+
+    using Base = UsesAllocatorTestBase<UsesAllocatorV2, Alloc>;
+    using CtorAlloc = typename Base::CtorAlloc;
+
+    UsesAllocatorV2() : Base(&makeArgumentID<>()) {}
+    UsesAllocatorV2(UsesAllocatorV2 const&)
+        : Base(&makeArgumentID<UsesAllocatorV2 const&>()) {}
+    UsesAllocatorV2(UsesAllocatorV2 &&)
+        : Base(&makeArgumentID<UsesAllocatorV2 &&>()) {}
+
+    // Non-Uses Allocator Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity> = false>
+    UsesAllocatorV2(Args&&...) : Base(&makeArgumentID<Args&&...>()) {}
+
+    // Uses Allocator Last Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity + 1> = false>
+    UsesAllocatorV2(Args&&... args)
+        : Base(AllocLastTag{}, std::forward<Args>(args)...)
+    {}
+};
+
+template <class Alloc, size_t Arity>
+class UsesAllocatorV3 : public UsesAllocatorTestBase<UsesAllocatorV3<Alloc, Arity>, Alloc>
+{
+public:
+    typedef Alloc allocator_type;
+
+    using Base = UsesAllocatorTestBase<UsesAllocatorV3, Alloc>;
+    using CtorAlloc = typename Base::CtorAlloc;
+
+    UsesAllocatorV3() : Base(&makeArgumentID<>()) {}
+    UsesAllocatorV3(UsesAllocatorV3 const&)
+        : Base(&makeArgumentID<UsesAllocatorV3 const&>()) {}
+    UsesAllocatorV3(UsesAllocatorV3 &&)
+        : Base(&makeArgumentID<UsesAllocatorV3 &&>()) {}
+
+    // Non-Uses Allocator Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity> = false>
+    UsesAllocatorV3(Args&&...) : Base(&makeArgumentID<Args&&...>()) {}
+
+    // Uses Allocator Arg Ctor
+    template <class ...Args>
+    UsesAllocatorV3(std::allocator_arg_t tag, CtorAlloc const& alloc, Args&&... args)
+        : Base(tag, alloc, std::forward<Args>(args)...)
+    {}
+
+    // Uses Allocator Last Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity + 1> = false>
+    UsesAllocatorV3(Args&&... args)
+        : Base(AllocLastTag{}, std::forward<Args>(args)...)
+    {}
+};
+
+template <class Alloc, size_t Arity>
+class NotUsesAllocator : public UsesAllocatorTestBase<NotUsesAllocator<Alloc, Arity>, Alloc>
+{
+public:
+    // no allocator_type typedef provided
+
+    using Base = UsesAllocatorTestBase<NotUsesAllocator, Alloc>;
+    using CtorAlloc = typename Base::CtorAlloc;
+
+    NotUsesAllocator() : Base(&makeArgumentID<>()) {}
+    NotUsesAllocator(NotUsesAllocator const&)
+        : Base(&makeArgumentID<NotUsesAllocator const&>()) {}
+    NotUsesAllocator(NotUsesAllocator &&)
+        : Base(&makeArgumentID<NotUsesAllocator &&>()) {}
+    // Non-Uses Allocator Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity> = false>
+    NotUsesAllocator(Args&&...) : Base(&makeArgumentID<Args&&...>()) {}
+
+    // Uses Allocator Arg Ctor
+    template <class ...Args>
+    NotUsesAllocator(std::allocator_arg_t tag, CtorAlloc const& alloc, Args&&... args)
+        : Base(tag, alloc, std::forward<Args>(args)...)
+    {}
+
+    // Uses Allocator Last Ctor
+    template <class ...Args, EnableIfB<sizeof...(Args) == Arity + 1> = false>
+    NotUsesAllocator(Args&&... args)
+        : Base(AllocLastTag{}, std::forward<Args>(args)...)
+    {}
+};
+
+#endif /* USES_ALLOC_TYPES_H */
diff --git a/app/src/main/cpp/libcxx/test/support/variant_test_helpers.h b/app/src/main/cpp/libcxx/test/support/variant_test_helpers.h
new file mode 100644
index 0000000..78b3978
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/variant_test_helpers.h
@@ -0,0 +1,169 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUPPORT_VARIANT_TEST_HELPERS_H
+#define SUPPORT_VARIANT_TEST_HELPERS_H
+
+#include <type_traits>
+#include <utility>
+#include <cassert>
+
+#include "test_macros.h"
+#include "type_id.h"
+
+#if TEST_STD_VER <= 14
+#error This file requires C++17
+#endif
+
+// FIXME: Currently the variant<T&> tests are disabled using this macro.
+#define TEST_VARIANT_HAS_NO_REFERENCES
+#ifdef _LIBCPP_ENABLE_NARROWING_CONVERSIONS_IN_VARIANT
+# define TEST_VARIANT_ALLOWS_NARROWING_CONVERSIONS
+#endif
+
+#ifdef TEST_VARIANT_ALLOWS_NARROWING_CONVERSIONS
+constexpr bool VariantAllowsNarrowingConversions = true;
+#else
+constexpr bool VariantAllowsNarrowingConversions = false;
+#endif
+
+#ifndef TEST_HAS_NO_EXCEPTIONS
+struct CopyThrows {
+  CopyThrows() = default;
+  CopyThrows(CopyThrows const&) { throw 42; }
+  CopyThrows& operator=(CopyThrows const&) { throw 42; }
+};
+
+struct MoveThrows {
+  static int alive;
+  MoveThrows() { ++alive; }
+  MoveThrows(MoveThrows const&) {++alive;}
+  MoveThrows(MoveThrows&&) {  throw 42; }
+  MoveThrows& operator=(MoveThrows const&) { return *this; }
+  MoveThrows& operator=(MoveThrows&&) { throw 42; }
+  ~MoveThrows() { --alive; }
+};
+
+int MoveThrows::alive = 0;
+
+struct MakeEmptyT {
+  static int alive;
+  MakeEmptyT() { ++alive; }
+  MakeEmptyT(MakeEmptyT const&) {
+      ++alive;
+      // Don't throw from the copy constructor since variant's assignment
+      // operator performs a copy before committing to the assignment.
+  }
+  MakeEmptyT(MakeEmptyT &&) {
+      throw 42;
+  }
+  MakeEmptyT& operator=(MakeEmptyT const&) {
+      throw 42;
+  }
+  MakeEmptyT& operator=(MakeEmptyT&&) {
+      throw 42;
+  }
+   ~MakeEmptyT() { --alive; }
+};
+static_assert(std::is_swappable_v<MakeEmptyT>, ""); // required for test
+
+int MakeEmptyT::alive = 0;
+
+template <class Variant>
+void makeEmpty(Variant& v) {
+    Variant v2(std::in_place_type<MakeEmptyT>);
+    try {
+        v = std::move(v2);
+        assert(false);
+    } catch (...) {
+        assert(v.valueless_by_exception());
+    }
+}
+#endif // TEST_HAS_NO_EXCEPTIONS
+
+enum CallType : unsigned {
+  CT_None,
+  CT_NonConst = 1,
+  CT_Const = 2,
+  CT_LValue = 4,
+  CT_RValue = 8
+};
+
+inline constexpr CallType operator|(CallType LHS, CallType RHS) {
+  return static_cast<CallType>(static_cast<unsigned>(LHS) |
+                               static_cast<unsigned>(RHS));
+}
+
+struct ForwardingCallObject {
+
+  template <class... Args>
+  ForwardingCallObject& operator()(Args&&...) & {
+    set_call<Args &&...>(CT_NonConst | CT_LValue);
+    return *this;
+  }
+
+  template <class... Args>
+  const ForwardingCallObject& operator()(Args&&...) const & {
+    set_call<Args &&...>(CT_Const | CT_LValue);
+    return *this;
+  }
+
+  template <class... Args>
+  ForwardingCallObject&& operator()(Args&&...) && {
+    set_call<Args &&...>(CT_NonConst | CT_RValue);
+    return std::move(*this);
+  }
+
+  template <class... Args>
+  const ForwardingCallObject&& operator()(Args&&...) const && {
+    set_call<Args &&...>(CT_Const | CT_RValue);
+    return std::move(*this);
+  }
+
+  template <class... Args> static void set_call(CallType type) {
+    assert(last_call_type == CT_None);
+    assert(last_call_args == nullptr);
+    last_call_type = type;
+    last_call_args = std::addressof(makeArgumentID<Args...>());
+  }
+
+  template <class... Args> static bool check_call(CallType type) {
+    bool result = last_call_type == type && last_call_args &&
+                  *last_call_args == makeArgumentID<Args...>();
+    last_call_type = CT_None;
+    last_call_args = nullptr;
+    return result;
+  }
+
+  // To check explicit return type for visit<R>
+  constexpr operator int() const
+  {
+    return 0;
+  }
+
+  static CallType last_call_type;
+  static const TypeID *last_call_args;
+};
+
+CallType ForwardingCallObject::last_call_type = CT_None;
+const TypeID *ForwardingCallObject::last_call_args = nullptr;
+
+struct ReturnFirst {
+  template <class... Args> constexpr int operator()(int f, Args &&...) const {
+    return f;
+  }
+};
+
+struct ReturnArity {
+  template <class... Args> constexpr int operator()(Args &&...) const {
+    return sizeof...(Args);
+  }
+};
+
+#endif // SUPPORT_VARIANT_TEST_HELPERS_H
diff --git a/app/src/main/cpp/libcxx/test/support/wide_temp_file.h b/app/src/main/cpp/libcxx/test/support/wide_temp_file.h
new file mode 100644
index 0000000..f5a6540
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/support/wide_temp_file.h
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef TEST_SUPPORT_WIDE_TEMP_FILE_H
+#define TEST_SUPPORT_WIDE_TEMP_FILE_H
+
+#include <codecvt>
+#include <locale>
+#include <string>
+
+#include "platform_support.h"
+#include "test_macros.h"
+
+TEST_DIAGNOSTIC_PUSH
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wdeprecated-declarations")
+inline std::wstring get_wide_temp_file_name() {
+    return std::wstring_convert<std::codecvt_utf8_utf16<wchar_t> >().from_bytes(get_temp_file_name());
+}
+TEST_DIAGNOSTIC_POP
+
+#endif // TEST_SUPPORT_WIDE_TEMP_FILE_H
diff --git a/app/src/main/cpp/libcxx/test/tools/CMakeLists.txt b/app/src/main/cpp/libcxx/test/tools/CMakeLists.txt
new file mode 100644
index 0000000..10be63e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/CMakeLists.txt
@@ -0,0 +1,7 @@
+
+set(LIBCXX_TEST_TOOLS_PATH ${CMAKE_CURRENT_BINARY_DIR} PARENT_SCOPE)
+
+# TODO: Remove LIBCXX_ENABLE_CLANG_TIDY
+if(LIBCXX_ENABLE_CLANG_TIDY)
+  add_subdirectory(clang_tidy_checks)
+endif()
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/CMakeLists.txt b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/CMakeLists.txt
new file mode 100644
index 0000000..adceee2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/CMakeLists.txt
@@ -0,0 +1,46 @@
+
+# Look for the latest package
+set(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
+set(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
+
+find_package(Clang 16)
+
+set(SOURCES
+    abi_tag_on_virtual.cpp
+    hide_from_abi.cpp
+    robust_against_adl.cpp
+    qualify_declval.cpp
+
+    libcpp_module.cpp
+   )
+
+if(NOT Clang_FOUND)
+  message(STATUS "Could not find a suitable version of the Clang development package;
+                  custom libc++ clang-tidy checks will not be available.")
+  return()
+endif()
+
+message(STATUS "Found system-installed LLVM ${LLVM_PACKAGE_VERSION} with headers in ${LLVM_INCLUDE_DIRS}")
+
+set(CMAKE_CXX_STANDARD 20)
+
+# Link only against clangTidy itself, not anything that clangTidy uses; otherwise we run setup code multiple times
+# which results in clang-tidy crashing
+set_target_properties(clangTidy PROPERTIES INTERFACE_LINK_LIBRARIES "")
+# ClangTargets.cmake doesn't set the include paths, so we have to do it
+target_include_directories(clangTidy INTERFACE
+                           ${CLANG_INCLUDE_DIRS}
+                           ${LLVM_INCLUDE_DIRS}
+                          )
+target_compile_options(clangTidy INTERFACE -fno-rtti)
+
+add_library(cxx-tidy MODULE ${SOURCES})
+target_link_libraries(cxx-tidy clangTidy)
+
+set_target_properties(cxx-tidy PROPERTIES
+                      CXX_STANDARD 20
+                      CXX_STANDARD_REQUIRED YES
+                      CXX_EXTENSIONS NO)
+
+set_target_properties(cxx-tidy PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
+set(CMAKE_SHARED_MODULE_SUFFIX_CXX .plugin) # Use a portable suffix to simplify how we can find it from Lit
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/abi_tag_on_virtual.cpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/abi_tag_on_virtual.cpp
new file mode 100644
index 0000000..f186617
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/abi_tag_on_virtual.cpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+#include "clang-tidy/ClangTidyModuleRegistry.h"
+
+#include "abi_tag_on_virtual.hpp"
+
+// This clang-tidy check ensures that we don't place an abi_tag attribute on
+// virtual functions. This can happen by mistakenly applying a macro like
+// _LIBCPP_HIDE_FROM_ABI on a virtual function.
+//
+// The problem is that arm64e pointer authentication extensions use the mangled
+// name of the function to sign the function pointer in the vtable, which means
+// that the ABI tag effectively influences how the pointers are signed.
+//
+// This can lead to PAC failures when passing an object that holds one of these
+// pointers in its vtable across an ABI boundary if the two sides have been compiled
+// with different versions of libc++: one side will sign the pointer using one function
+// mangling (with one ABI tag), and the other side will authenticate the pointer expecting
+// it to have a different mangled name due to the ABI tag being different, which will crash.
+//
+// This test ensures that we don't re-introduce this issue in the code base.
+
+namespace libcpp {
+abi_tag_on_virtual::abi_tag_on_virtual(llvm::StringRef name, clang::tidy::ClangTidyContext* context)
+    : clang::tidy::ClangTidyCheck(name, context) {}
+
+void abi_tag_on_virtual::registerMatchers(clang::ast_matchers::MatchFinder* finder) {
+  using namespace clang::ast_matchers;
+  finder->addMatcher(cxxMethodDecl(isVirtual(), hasAttr(clang::attr::AbiTag)).bind("abi_tag_on_virtual"), this);
+}
+
+void abi_tag_on_virtual::check(const clang::ast_matchers::MatchFinder::MatchResult& result) {
+  if (const auto* call = result.Nodes.getNodeAs<clang::CXXMethodDecl>("abi_tag_on_virtual"); call != nullptr) {
+    diag(call->getBeginLoc(),
+         "_LIBCPP_HIDE_FROM_ABI should not be used on virtual functions to avoid problems with pointer authentication. "
+         "Use _LIBCPP_HIDE_FROM_ABI_VIRTUAL instead.");
+  }
+}
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/abi_tag_on_virtual.hpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/abi_tag_on_virtual.hpp
new file mode 100644
index 0000000..9a8d821
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/abi_tag_on_virtual.hpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+
+namespace libcpp {
+class abi_tag_on_virtual : public clang::tidy::ClangTidyCheck {
+public:
+  abi_tag_on_virtual(llvm::StringRef, clang::tidy::ClangTidyContext*);
+  void registerMatchers(clang::ast_matchers::MatchFinder*) override;
+  void check(const clang::ast_matchers::MatchFinder::MatchResult&) override;
+};
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/hide_from_abi.cpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/hide_from_abi.cpp
new file mode 100644
index 0000000..9ae2536
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/hide_from_abi.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+#include "clang-tidy/ClangTidyModuleRegistry.h"
+
+#include "hide_from_abi.hpp"
+
+namespace libcpp {
+hide_from_abi::hide_from_abi(llvm::StringRef name, clang::tidy::ClangTidyContext* context)
+    : clang::tidy::ClangTidyCheck(name, context) {}
+
+void hide_from_abi::registerMatchers(clang::ast_matchers::MatchFinder* finder) {
+  using namespace clang::ast_matchers;
+  finder->addMatcher(
+      functionDecl(
+          unless(anyOf(
+              // These functions can't be marked `[[gnu::always_inline]]` for various reasons,
+              // so we can't mark them `_LIBCPP_HIDE_FROM_ABI`. These functions are ignored in
+              // all namespaces. Checking the qualified name is a lot harder and these names
+              // should result in very few (if any) false-negatives. This is also just a
+              // temporary work-around until we can mark functions as HIDE_FROM_ABI without
+              // having to add `[[gnu::always_inline]]` with GCC.
+              hasAnyName("__introsort",
+                         "__inplace_merge",
+                         "__libcpp_snprintf_l",
+                         "__libcpp_asprintf_l",
+                         "__libcpp_sscanf_l",
+                         "__tree_sub_invariant",
+                         "__stable_sort_move",
+                         "__stable_sort",
+                         "__stable_partition",
+                         "__lock_first",
+                         "__stable_partition_impl"),
+              hasAttr(clang::attr::Visibility),
+              hasAttr(clang::attr::AbiTag),
+              cxxMethodDecl(), // We have explicitly instantiated classes and some of their methods don't have these attributes
+              isDeleted(),
+              isConsteval())),
+          isDefinition())
+          .bind("missing_hide_from_abi"),
+      this);
+}
+
+void hide_from_abi::check(const clang::ast_matchers::MatchFinder::MatchResult& result) {
+  if (const auto* call = result.Nodes.getNodeAs<clang::FunctionDecl>("missing_hide_from_abi"); call != nullptr) {
+    diag(call->getBeginLoc(), "_LIBCPP_HIDE_FROM_ABI is missing");
+  }
+}
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/hide_from_abi.hpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/hide_from_abi.hpp
new file mode 100644
index 0000000..d73b510
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/hide_from_abi.hpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+
+namespace libcpp {
+class hide_from_abi : public clang::tidy::ClangTidyCheck {
+public:
+  hide_from_abi(llvm::StringRef, clang::tidy::ClangTidyContext*);
+  void registerMatchers(clang::ast_matchers::MatchFinder*) override;
+  void check(const clang::ast_matchers::MatchFinder::MatchResult&) override;
+};
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/libcpp_module.cpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/libcpp_module.cpp
new file mode 100644
index 0000000..f1dfbf5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/libcpp_module.cpp
@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyModule.h"
+#include "clang-tidy/ClangTidyModuleRegistry.h"
+
+#include "abi_tag_on_virtual.hpp"
+#include "hide_from_abi.hpp"
+#include "robust_against_adl.hpp"
+#include "qualify_declval.hpp"
+
+namespace {
+class LibcxxTestModule : public clang::tidy::ClangTidyModule {
+public:
+  void addCheckFactories(clang::tidy::ClangTidyCheckFactories& check_factories) override {
+    check_factories.registerCheck<libcpp::abi_tag_on_virtual>("libcpp-avoid-abi-tag-on-virtual");
+    check_factories.registerCheck<libcpp::hide_from_abi>("libcpp-hide-from-abi");
+    check_factories.registerCheck<libcpp::robust_against_adl_check>("libcpp-robust-against-adl");
+    check_factories.registerCheck<libcpp::qualify_declval>("libcpp-qualify-declval");
+  }
+};
+} // namespace
+
+clang::tidy::ClangTidyModuleRegistry::Add<LibcxxTestModule> libcpp_module{
+    "libcpp-module", "Adds libc++-specific checks."};
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.cpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.cpp
new file mode 100644
index 0000000..f1c84ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "qualify_declval.hpp"
+
+namespace {
+AST_MATCHER(clang::UnresolvedLookupExpr, requiresADL) { return Node.requiresADL(); }
+AST_MATCHER(clang::UnresolvedLookupExpr, isDeclval) { return Node.getName().getAsString() == "declval"; }
+} // namespace
+
+namespace libcpp {
+qualify_declval::qualify_declval(llvm::StringRef name, clang::tidy::ClangTidyContext* context)
+    : clang::tidy::ClangTidyCheck(name, context) {}
+
+void qualify_declval::registerMatchers(clang::ast_matchers::MatchFinder* finder) {
+  using namespace clang::ast_matchers;
+  finder->addMatcher(callExpr(has(unresolvedLookupExpr(requiresADL(), isDeclval()))).bind("ADLcall"), this);
+}
+
+void qualify_declval::check(const clang::ast_matchers::MatchFinder::MatchResult& result) {
+  if (const auto* call = result.Nodes.getNodeAs<clang::CallExpr>("ADLcall"); call != nullptr) {
+    diag(call->getBeginLoc(), "declval should be qualified to get better error messages")
+        << clang::FixItHint::CreateInsertion(call->getBeginLoc(), "std::");
+  }
+}
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.hpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.hpp
new file mode 100644
index 0000000..931f9cc
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/qualify_declval.hpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+
+namespace libcpp {
+class qualify_declval : public clang::tidy::ClangTidyCheck {
+public:
+  qualify_declval(llvm::StringRef, clang::tidy::ClangTidyContext*);
+  void registerMatchers(clang::ast_matchers::MatchFinder*) override;
+  void check(const clang::ast_matchers::MatchFinder::MatchResult&) override;
+};
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp
new file mode 100644
index 0000000..8825c3b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.cpp
@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+#include "clang-tidy/ClangTidyModuleRegistry.h"
+
+#include "robust_against_adl.hpp"
+
+#include <algorithm>
+
+namespace {
+AST_MATCHER(clang::UnresolvedLookupExpr, requiresADL) { return Node.requiresADL(); }
+
+AST_MATCHER(clang::CallExpr, isOperator) { return llvm::isa<clang::CXXOperatorCallExpr>(Node); }
+
+AST_MATCHER(clang::UnresolvedLookupExpr, isCustomizationPoint) {
+  return std::ranges::any_of(
+      std::array{"swap", "make_error_code", "make_error_condition", "begin", "end", "size", "rend", "rbegin"},
+      [&](const char* func) { return Node.getName().getAsString() == func; });
+}
+
+AST_MATCHER(clang::CXXMethodDecl, isStatic) { return Node.isStatic(); }
+
+} // namespace
+
+namespace libcpp {
+robust_against_adl_check::robust_against_adl_check(llvm::StringRef name, clang::tidy::ClangTidyContext* context)
+    : clang::tidy::ClangTidyCheck(name, context) {}
+
+void robust_against_adl_check::registerMatchers(clang::ast_matchers::MatchFinder* finder) {
+  using namespace clang::ast_matchers;
+  finder->addMatcher(
+      callExpr(unless(isOperator()),
+               unless(argumentCountIs(0)),
+               has(unresolvedLookupExpr(requiresADL(), unless(isCustomizationPoint()))),
+               unless(callee(cxxMethodDecl(isStatic()))))
+          .bind("ADLcall"),
+      this);
+}
+
+void robust_against_adl_check::check(const clang::ast_matchers::MatchFinder::MatchResult& result) {
+  if (const auto* call = result.Nodes.getNodeAs<clang::CallExpr>("ADLcall"); call != nullptr) {
+    diag(call->getBeginLoc(), "ADL lookup");
+  }
+}
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.hpp b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.hpp
new file mode 100644
index 0000000..68b64c4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/test/tools/clang_tidy_checks/robust_against_adl.hpp
@@ -0,0 +1,18 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang-tidy/ClangTidyCheck.h"
+
+namespace libcpp {
+class robust_against_adl_check : public clang::tidy::ClangTidyCheck {
+public:
+  robust_against_adl_check(llvm::StringRef, clang::tidy::ClangTidyContext*);
+  void registerMatchers(clang::ast_matchers::MatchFinder*) override;
+  void check(const clang::ast_matchers::MatchFinder::MatchResult&) override;
+};
+} // namespace libcpp
diff --git a/app/src/main/cpp/libcxx/utils/CMakeLists.txt b/app/src/main/cpp/libcxx/utils/CMakeLists.txt
new file mode 100644
index 0000000..bb7d349
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/CMakeLists.txt
@@ -0,0 +1,49 @@
+
+add_custom_target(libcxx-generate-public-header-transitive-inclusion-tests
+    COMMAND "${Python3_EXECUTABLE}" "${LIBCXX_SOURCE_DIR}/utils/generate_header_inclusion_tests.py"
+    COMMENT "Generate tests checking for mandated transitive includes in public headers.")
+
+add_custom_target(libcxx-generate-public-header-tests
+    COMMAND "${Python3_EXECUTABLE}" "${LIBCXX_SOURCE_DIR}/utils/generate_header_tests.py"
+    COMMENT "Generate tests for including public headers.")
+
+add_custom_target(libcxx-generate-feature-test-macros
+    COMMAND "${Python3_EXECUTABLE}" "${LIBCXX_SOURCE_DIR}/utils/generate_feature_test_macro_components.py"
+    COMMENT "Generate the <version> header and tests for feature test macros.")
+
+add_custom_target(libcxx-generate-extended-grapheme-cluster-tables
+    COMMAND
+        "${Python3_EXECUTABLE}"
+        "${LIBCXX_SOURCE_DIR}/utils/generate_extended_grapheme_cluster_table.py"
+        "${LIBCXX_SOURCE_DIR}/include/__format/extended_grapheme_cluster_table.h"
+    COMMENT "Generate the extended grapheme cluster header.")
+
+add_custom_target(libcxx-generate-extended-grapheme-cluster-tests
+    COMMAND
+        "${Python3_EXECUTABLE}"
+        "${LIBCXX_SOURCE_DIR}/utils/generate_extended_grapheme_cluster_test.py"
+         "${LIBCXX_SOURCE_DIR}/test/libcxx/utilities/format/format.string/format.string.std/extended_grapheme_cluster.h"
+    COMMENT "Generate the extended grapheme cluster header.")
+
+add_custom_target(libcxx-generate-escaped-output-table
+    COMMAND
+        "${Python3_EXECUTABLE}"
+        "${LIBCXX_SOURCE_DIR}/utils/generate_escaped_output_table.py"
+        "${LIBCXX_SOURCE_DIR}/include/__format/escaped_output_table.h"
+    COMMENT "Generate the escaped output header")
+
+add_custom_target(libcxx-generate-iwyu-mapping
+    COMMAND
+        "${Python3_EXECUTABLE}"
+        "${LIBCXX_SOURCE_DIR}/utils/generate_iwyu_mapping.py"
+    COMMENT "Generate the mapping file for include-what-you-use")
+
+add_custom_target(libcxx-generate-files
+    DEPENDS libcxx-generate-public-header-transitive-inclusion-tests
+            libcxx-generate-public-header-tests
+            libcxx-generate-feature-test-macros
+            libcxx-generate-extended-grapheme-cluster-tables
+            libcxx-generate-extended-grapheme-cluster-tests
+            libcxx-generate-escaped-output-table
+            libcxx-generate-iwyu-mapping
+    COMMENT "Create all the auto-generated files in libc++ and its tests.")
diff --git a/app/src/main/cpp/libcxx/utils/adb_run.py b/app/src/main/cpp/libcxx/utils/adb_run.py
new file mode 100644
index 0000000..cc557ea
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/adb_run.py
@@ -0,0 +1,178 @@
+#!/usr/bin/env python3
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+"""adb_run.py is a utility for running a libc++ test program via adb.
+"""
+
+import argparse
+import os
+import re
+import shlex
+import subprocess
+import sys
+
+
+# Sync a host file /path/to/file to ${REMOTE_BASE_DIR}/path/to/file.
+REMOTE_BASE_DIR = "/data/local/tmp/adb_run"
+
+
+def sync_test_dir(local_dir: str, remote_dir: str) -> None:
+    """Sync the libc++ test directory on the host to the remote device."""
+
+    # Optimization: The typical libc++ test directory has only a single
+    # *.tmp.exe file in it. In that case, skip the `mkdir` command, which is
+    # normally necessary because we don't know if the target directory already
+    # exists on the device.
+    local_files = os.listdir(local_dir)
+    if len(local_files) == 1:
+        local_file = os.path.join(local_dir, local_files[0])
+        remote_file = os.path.join(remote_dir, local_files[0])
+        if not os.path.islink(local_file) and os.path.isfile(local_file):
+            subprocess.check_call(["adb", "push", "--sync", local_file,
+                                   remote_file], stdout=subprocess.DEVNULL)
+            return
+
+    subprocess.check_call(["adb", "shell", "mkdir", "-p", remote_dir])
+    subprocess.check_call(
+        ["adb", "push", "--sync", local_dir, os.path.dirname(remote_dir)],
+        stdout=subprocess.DEVNULL)
+
+
+def build_env_arg(env_args: list[str], prepend_path_args: list[str]) -> str:
+    components = []
+    for arg in env_args:
+        k, v = arg.split("=", 1)
+        components.append(f"export {k}={shlex.quote(v)}; ")
+    for k, v in prepend_path_args:
+        components.append(f"export {k}={shlex.quote(v)}${{{k}:+:${k}}}; ")
+    return "".join(components)
+
+
+def main() -> int:
+    """Main function (pylint wants this docstring)."""
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--execdir", type=str, required=True)
+    parser.add_argument("--env", type=str, required=False, action="append",
+                        default=[])
+    parser.add_argument("--prepend-path-env", type=str, nargs=2, required=False,
+                        action="append", default=[])
+    parser.add_argument("--verbose", "-v", default=False, action="store_true")
+    parser.add_argument("command", nargs=argparse.ONE_OR_MORE)
+    args = parser.parse_args()
+
+    local_dir = args.execdir
+    assert local_dir.startswith("/")
+    assert not local_dir.endswith("/")
+    remote_dir = REMOTE_BASE_DIR + local_dir
+    sync_test_dir(local_dir, remote_dir)
+
+    adb_shell_command = (
+        # Set the environment early so that PATH can be overridden. Overriding
+        # PATH is useful for:
+        #  - Replacing older shell utilities with toybox (e.g. on old devices).
+        #  - Adding a `bash` command that delegates to `sh` (mksh).
+        f"{build_env_arg(args.env, args.prepend_path_env)}"
+
+        # If we're running as root, switch to the shell user. The libc++
+        # filesystem tests require running without root permissions. Some x86
+        # emulator devices (before Android N) do not have a working `adb unroot`
+        # and always run as root. Non-debug builds typically lack `su` and only
+        # run as the shell user.
+        #
+        # Some libc++ tests create temporary files in the working directory,
+        # which might be owned by root. Before switching to shell, make the
+        # cwd writable (and readable+executable) to every user.
+        #
+        # N.B.:
+        #  - Avoid "id -u" because it wasn't supported until Android M.
+        #  - The `env` and `which` commands were also added in Android M.
+        #  - Starting in Android M, su from root->shell resets PATH, so we need
+        #    to modify it again in the new environment.
+        f"run_without_root() {{ "
+        f"  chmod a+rwx .; "
+        f"  case \"$(id)\" in "
+        f"    *\"uid=0(root)\"*) "
+        f"    if command -v env >/dev/null; then "
+        f"      su shell $(command -v env) PATH=\"$PATH\" \"$@\"; "
+        f"    else "
+        f"      su shell \"$@\"; "
+        f"    fi;; "
+        f"    *) \"$@\";; "
+        f"  esac; "
+        f"}}; "
+    )
+
+    # Older versions of Bionic limit the length of argv[0] to 127 bytes
+    # (SOINFO_NAME_LEN-1), and the path to libc++ tests tend to exceed this
+    # limit. Changing the working directory works around this limit. The limit
+    # is increased to 4095 (PATH_MAX-1) in Android M (API 23).
+    command_line = [arg.replace(local_dir + "/", "./") for arg in args.command]
+
+    # Prior to the adb feature "shell_v2" (added in Android N), `adb shell`
+    # always created a pty:
+    #  - This merged stdout and stderr together.
+    #  - The pty converts LF to CRLF.
+    #  - The exit code of the shell command wasn't propagated.
+    # Work around all three limitations, unless "shell_v2" is present.
+    proc = subprocess.run(["adb", "features"], check=True,
+                          stdout=subprocess.PIPE, encoding="utf-8")
+    adb_features = set(proc.stdout.strip().split())
+    has_shell_v2 = "shell_v2" in adb_features
+    if has_shell_v2:
+        adb_shell_command += (
+            f"cd {remote_dir} && run_without_root {shlex.join(command_line)}"
+        )
+    else:
+        adb_shell_command += (
+            f"{{"
+            f"  stdout=$("
+            f"    cd {remote_dir} && run_without_root {shlex.join(command_line)}; "
+            f"    echo -n __libcxx_adb_exit__=$?"
+            f"  ); "
+            f"}} 2>&1; "
+            f"echo -n __libcxx_adb_stdout__\"$stdout\""
+        )
+
+    adb_command_line = ["adb", "shell", adb_shell_command]
+    if args.verbose:
+        sys.stderr.write("running: " + shlex.join(adb_command_line) + "\n")
+
+    if has_shell_v2:
+        proc = subprocess.run(adb_command_line, shell=False, check=False,
+                              encoding="utf-8")
+        return proc.returncode
+    else:
+        proc = subprocess.run(adb_command_line, shell=False, check=False,
+                              stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
+                              encoding="utf-8")
+        # The old `adb shell` mode used a pty, which converted LF to CRLF.
+        # Convert it back.
+        output = proc.stdout.replace("\r\n", "\n")
+
+        if proc.returncode:
+            sys.stderr.write(f"error: adb failed:\n"
+                             f"  command: {shlex.join(adb_command_line)}\n"
+                             f"  output: {output}\n")
+            return proc.returncode
+
+        match = re.match(r"(.*)__libcxx_adb_stdout__(.*)__libcxx_adb_exit__=(\d+)$",
+                     output, re.DOTALL)
+        if not match:
+            sys.stderr.write(f"error: could not parse adb output:\n"
+                             f"  command: {shlex.join(adb_command_line)}\n"
+                             f"  output: {output}\n")
+            return 1
+
+        sys.stderr.write(match.group(1))
+        sys.stdout.write(match.group(2))
+        return int(match.group(3))
+
+
+if __name__ == '__main__':
+    sys.exit(main())
diff --git a/app/src/main/cpp/libcxx/utils/cat_files.py b/app/src/main/cpp/libcxx/utils/cat_files.py
new file mode 100644
index 0000000..ac4f386
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/cat_files.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+from argparse import ArgumentParser
+import sys
+
+def print_and_exit(msg):
+    sys.stderr.write(msg + '\n')
+    sys.exit(1)
+
+def main():
+    parser = ArgumentParser(
+        description="Concatenate two files into a single file")
+    parser.add_argument(
+        '-o', '--output', dest='output', required=True,
+        help='The output file. stdout is used if not given',
+        type=str, action='store')
+    parser.add_argument(
+        'files', metavar='files',  nargs='+',
+        help='The files to concatenate')
+
+    args = parser.parse_args()
+
+    if len(args.files) < 2:
+        print_and_exit('fewer than 2 inputs provided')
+    data = ''
+    for filename in args.files:
+        with open(filename, 'r') as f:
+            data += f.read()
+        if len(data) != 0 and data[-1] != '\n':
+            data += '\n'
+    assert len(data) > 0 and "cannot cat empty files"
+    with open(args.output, 'w') as f:
+        f.write(data)
+
+
+if __name__ == '__main__':
+    main()
+    sys.exit(0)
diff --git a/app/src/main/cpp/libcxx/utils/ci/BOT_OWNERS.txt b/app/src/main/cpp/libcxx/utils/ci/BOT_OWNERS.txt
new file mode 100644
index 0000000..f6eb91c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/BOT_OWNERS.txt
@@ -0,0 +1,17 @@
+This file is a list of the people or groups responsible for ensuring that bots
+are running correctly. They will also deal with platform specific issues that
+cannot be figured out by the community alone.
+
+The list is sorted by surname and formatted to allow easy grepping and
+beautification by scripts. The fields are: name (N), email (E), web-address
+(W), PGP key ID and fingerprint (P), description (D), snail-mail address
+(S), Phabricator handle (H) and IRC handle (I). Each entry should contain at
+least the (N), (E) and (D) fields.
+
+N: Linaro Toolchain Working Group
+E: linaro-toolchain@lists.linaro.org
+D: Armv7, Armv8, AArch64
+
+N: LLVM on Power
+E: powerllvm@ca.ibm.com
+D: AIX, ppc64le
diff --git a/app/src/main/cpp/libcxx/utils/ci/Dockerfile b/app/src/main/cpp/libcxx/utils/ci/Dockerfile
new file mode 100644
index 0000000..2a2e8e5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/Dockerfile
@@ -0,0 +1,119 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This Dockerfile describes the base image used to run the various libc++
+# build bots. By default, the image runs the Buildkite Agent, however one
+# can also just start the image with a shell to debug CI failures.
+#
+# To start a Buildkite Agent, run it as:
+#   $ docker run --env-file <secrets> -it $(docker build -q libcxx/utils/ci)
+#
+# The environment variables in `<secrets>` should be the ones necessary
+# to run a BuildKite agent.
+#
+# If you're only looking to run the Docker image locally for debugging a
+# build bot, see the `run-buildbot-container` script located in this directory.
+#
+# A pre-built version of this image is maintained on DockerHub as ldionne/libcxx-builder.
+# To update the image, rebuild it and push it to ldionne/libcxx-builder (which
+# will obviously only work if you have permission to do so).
+#
+#   $ docker build -t ldionne/libcxx-builder libcxx/utils/ci
+#   $ docker push ldionne/libcxx-builder
+#
+
+FROM ubuntu:jammy
+
+# Make sure apt-get doesn't try to prompt for stuff like our time zone, etc.
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y bash curl
+
+# Install various tools used by the build or the test suite
+RUN apt-get update && apt-get install -y ninja-build python3 python3-sphinx python3-distutils python3-psutil git gdb
+
+# Install dependencies required to run the LLDB data formatter tests
+RUN apt-get update && apt-get install -y python3 python3-dev libpython3-dev uuid-dev libncurses5-dev swig3.0 libxml2-dev libedit-dev
+
+# Locales for gdb and localization tests
+RUN apt-get update && apt-get install -y language-pack-en language-pack-fr \
+                                         language-pack-ja language-pack-ru \
+                                         language-pack-zh-hans
+# These two are not enabled by default so generate them
+RUN printf "fr_CA ISO-8859-1\ncs_CZ ISO-8859-2" >> /etc/locale.gen
+RUN mkdir /usr/local/share/i1en/
+RUN printf "fr_CA ISO-8859-1\ncs_CZ ISO-8859-2" >> /usr/local/share/i1en/SUPPORTED
+RUN locale-gen
+
+# Install Clang <latest>, <latest-1> and ToT, which are the ones we support.
+# We also install <latest-2> because we need to support the "latest-1" of the
+# current LLVM release branch, which is effectively the <latest-2> of the
+# tip-of-trunk LLVM. For example, after branching LLVM 14 but before branching
+# LLVM 15, we still need to have Clang 12 in this Docker image because the LLVM
+# 14 release branch CI uses it. The tip-of-trunk CI will never use Clang 12,
+# though.
+ENV LLVM_HEAD_VERSION=16
+RUN apt-get update && apt-get install -y lsb-release wget software-properties-common
+RUN wget https://apt.llvm.org/llvm.sh -O /tmp/llvm.sh
+RUN bash /tmp/llvm.sh $(($LLVM_HEAD_VERSION - 3)) # for CI transitions
+RUN bash /tmp/llvm.sh $(($LLVM_HEAD_VERSION - 2)) # previous release
+RUN bash /tmp/llvm.sh $(($LLVM_HEAD_VERSION - 1)) # latest release
+RUN bash /tmp/llvm.sh $LLVM_HEAD_VERSION          # current ToT
+
+# Make the latest version of Clang the "default" compiler on the system
+# TODO: After branching for LLVM 16, all jobs will be using an
+#       explicitly-versioned version of Clang instead, so we can get rid of
+#       these symlinks.
+RUN ln -fs /usr/bin/clang++-14 /usr/bin/c++ && [ -e $(readlink /usr/bin/c++) ]
+RUN ln -fs /usr/bin/clang-14 /usr/bin/cc && [ -e $(readlink /usr/bin/cc) ]
+
+# Install clang-format; always use the lastest stable branch.
+# TODO LLVM 16 remove hard-coded version 14 and the symlinks
+RUN apt-get update && apt-get install -y clang-format-$(($LLVM_HEAD_VERSION - 2)) clang-format-$(($LLVM_HEAD_VERSION - 1))
+RUN ln -s /usr/bin/clang-format-14 /usr/bin/clang-format && [ -e $(readlink /usr/bin/clang-format) ]
+RUN ln -s /usr/bin/git-clang-format-14 /usr/bin/git-clang-format && [ -e $(readlink /usr/bin/git-clang-format) ]
+
+# Install clang-tidy
+# TODO LLVM 16 remove hard-coded version 14 and the symlink
+RUN apt-get update && apt-get install -y clang-tidy-$(($LLVM_HEAD_VERSION - 1)) clang-tidy-$LLVM_HEAD_VERSION clang-tidy-14
+RUN ln -s /usr/bin/clang-tidy-14 /usr/bin/clang-tidy && [ -e $(readlink /usr/bin/clang-tidy) ]
+
+# Install llvm-dev and libclang-dev to compile custom clang-tidy checks
+RUN apt-get update && apt-get install -y llvm-$(($LLVM_HEAD_VERSION - 1))-dev     llvm-$(($LLVM_HEAD_VERSION - 2))-dev \
+                                     libclang-$(($LLVM_HEAD_VERSION - 1))-dev libclang-$(($LLVM_HEAD_VERSION - 2))-dev
+
+# TODO LLVM16 Don't install llvm-16-dev explicitly
+RUN apt-get update && apt-get install -y llvm-16-dev libclang-16-dev
+
+# Install the most recent GCC, like clang install the previous version as a transition.
+ENV GCC_LATEST_VERSION=12
+RUN apt-get update && apt install -y gcc-$((GCC_LATEST_VERSION - 1)) g++-$((GCC_LATEST_VERSION - 1))
+RUN apt-get update && apt install -y gcc-$GCC_LATEST_VERSION g++-$GCC_LATEST_VERSION
+
+# Install a recent CMake
+RUN wget https://github.com/Kitware/CMake/releases/download/v3.21.1/cmake-3.21.1-linux-x86_64.sh -O /tmp/install-cmake.sh
+RUN bash /tmp/install-cmake.sh --prefix=/usr --exclude-subdir --skip-license
+RUN rm /tmp/install-cmake.sh
+
+# Change the user to a non-root user, since some of the libc++ tests
+# (e.g. filesystem) require running as non-root. Also setup passwordless sudo.
+RUN apt-get update && apt-get install -y sudo
+RUN echo "ALL ALL = (ALL) NOPASSWD: ALL" >> /etc/sudoers
+RUN useradd --create-home libcxx-builder
+USER libcxx-builder
+WORKDIR /home/libcxx-builder
+
+# Install the Buildkite agent and dependencies. This must be done as non-root
+# for the Buildkite agent to be installed in a path where we can find it.
+RUN bash -c "$(curl -sL https://raw.githubusercontent.com/buildkite/agent/main/install.sh)"
+ENV PATH="${PATH}:/home/libcxx-builder/.buildkite-agent/bin"
+RUN echo "tags=\"queue=libcxx-builders,arch=$(uname -m),os=linux\"" >> "/home/libcxx-builder/.buildkite-agent/buildkite-agent.cfg"
+
+# By default, start the Buildkite agent (this requires a token).
+CMD buildkite-agent start
diff --git a/app/src/main/cpp/libcxx/utils/ci/Dockerfile.android b/app/src/main/cpp/libcxx/utils/ci/Dockerfile.android
new file mode 100644
index 0000000..7908d61
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/Dockerfile.android
@@ -0,0 +1,52 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This Dockerfile adds the Android SDK to the libcxx-builder docker image,
+# including platform-tools (adb), the Android Emulator, and an AVD image. It can
+# be used to run libc++ tests on the emulator.
+#
+# Build it locally using:
+#
+#   $ docker build -t libcxx-builder-android -f libcxx/utils/ci/Dockerfile.android libcxx/utils/ci
+#
+
+FROM ldionne/libcxx-builder
+
+WORKDIR /home/libcxx-builder
+
+# Allow access to the libcxx-builder home directory from other users. (e.g. when
+# running docker on a local LLVM checkout)
+RUN chmod a+rx /home/libcxx-builder
+
+ENV ANDROID_HOME /home/libcxx-builder/android-sdk
+ENV ANDROID_NDK_HOME ${ANDROID_HOME}/ndk/25.1.8937393
+ENV ANDROID_SERIAL emulator-5554
+
+# Add variables that should be preserved by sudo.
+RUN echo "Defaults env_keep += \"\
+  ANDROID_HOME \
+  ANDROID_NDK_HOME \
+  ANDROID_SERIAL \
+\"" | sudo tee -a /etc/sudoers
+
+RUN sudo apt-get update && sudo apt-get install -y openjdk-11-jdk unzip
+
+RUN curl -O https://dl.google.com/android/repository/commandlinetools-linux-8512546_latest.zip && \
+    mkdir $ANDROID_HOME && \
+    unzip commandlinetools-linux-8512546_latest.zip -d $ANDROID_HOME/cmdline-tools && \
+    mv $ANDROID_HOME/cmdline-tools/cmdline-tools $ANDROID_HOME/cmdline-tools/latest
+
+ENV PATH="${PATH}:${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools"
+
+RUN yes | sdkmanager --licenses
+RUN sdkmanager --install "system-images;android-33;google_apis;x86_64" && \
+    sdkmanager --install "platforms;android-33" && \
+    sdkmanager --install emulator && \
+    sdkmanager --install platform-tools && \
+    sdkmanager --install "ndk;$(basename ${ANDROID_NDK_HOME})"
diff --git a/app/src/main/cpp/libcxx/utils/ci/android-create-avd.sh b/app/src/main/cpp/libcxx/utils/ci/android-create-avd.sh
new file mode 100644
index 0000000..a992b88
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/android-create-avd.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+set -e
+
+# Disable the permissions on this dev node.
+sudo chmod a+rwx /dev/kvm
+
+$ANDROID_HOME/cmdline-tools/latest/bin/avdmanager \
+    --verbose create avd \
+    --name libcxx_avd \
+    --package "system-images;android-33;google_apis;x86_64" \
+    --sdcard 4000M --device pixel_5
+
+$ANDROID_HOME/emulator/emulator @libcxx_avd -no-window &
+
+$ANDROID_HOME/platform-tools/adb wait-for-device
diff --git a/app/src/main/cpp/libcxx/utils/ci/android-set-user.sh b/app/src/main/cpp/libcxx/utils/ci/android-set-user.sh
new file mode 100644
index 0000000..262c4d5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/android-set-user.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+set -e
+
+uname=$1
+uid=$2
+gname=$3
+gid=$4
+
+# Create a user/group pair matching the outer uid/gid. This can fail if the
+# username/uid/groupname/gid already exist. In that case, we'll use the
+# existing uid/gid, which is usually OK.
+sudo groupadd --gid ${gid} ${gname} || true
+sudo useradd --create-home ${uname} --no-user-group -u ${uid} -g ${gid} || true
+
+# sudo will reset the PATH, so add interesting things back in from the docker
+# image.
+extra_path=\
+${ANDROID_HOME}/cmdline-tools/latest/bin:\
+${ANDROID_HOME}/platform-tools
+
+shift 4
+exec sudo -u "#${uid}" sh -c 'cd; PATH='${extra_path}':${PATH} "$0" "$@"' "$@"
diff --git a/app/src/main/cpp/libcxx/utils/ci/apple-install-libcxx.sh b/app/src/main/cpp/libcxx/utils/ci/apple-install-libcxx.sh
new file mode 100644
index 0000000..dd34915
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/apple-install-libcxx.sh
@@ -0,0 +1,178 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+set -e
+
+PROGNAME="$(basename "${0}")"
+
+function error() { printf "error: %s\n" "$*"; exit 1; }
+
+function usage() {
+cat <<EOF
+Usage:
+${PROGNAME} [options]
+
+[-h|--help]                  Display this help and exit.
+
+--llvm-root <DIR>            Path to the root of the LLVM monorepo. Only the libcxx
+                             and libcxxabi directories are required.
+
+--build-dir <DIR>            Path to the directory to use for building. This will
+                             contain intermediate build products.
+
+--install-dir <DIR>          Path to the directory to install the library to.
+
+--symbols-dir <DIR>          Path to the directory to install the .dSYM bundle to.
+
+--architectures "<arch>..."  A whitespace separated list of architectures to build for.
+                             The library will be built for each architecture independently,
+                             and a universal binary containing all architectures will be
+                             created from that.
+
+--headers-only               Only install the header part of the library -- don't actually
+                             build the full library.
+
+--version X[.Y[.Z]]          The version of the library to encode in the dylib.
+EOF
+}
+
+while [[ $# -gt 0 ]]; do
+    case ${1} in
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        --llvm-root)
+            llvm_root="${2}"
+            shift; shift
+            ;;
+        --build-dir)
+            build_dir="${2}"
+            shift; shift
+            ;;
+        --symbols-dir)
+            symbols_dir="${2}"
+            shift; shift
+            ;;
+        --install-dir)
+            install_dir="${2}"
+            shift; shift
+            ;;
+        --architectures)
+            architectures="${2}"
+            shift; shift
+            ;;
+        --headers-only)
+            headers_only=true
+            shift
+            ;;
+        --version)
+            version="${2}"
+            shift; shift
+            ;;
+        *)
+            error "Unknown argument '${1}'"
+            ;;
+    esac
+done
+
+for arg in llvm_root build_dir symbols_dir install_dir architectures version; do
+    if [ -z ${!arg+x} ]; then
+        error "Missing required argument '--${arg//_/-}'"
+    elif [ "${!arg}" == "" ]; then
+        error "Argument to --${arg//_/-} must not be empty"
+    fi
+done
+
+# Allow using relative paths
+function realpath() {
+    if [[ $1 = /* ]]; then echo "$1"; else echo "$(pwd)/${1#./}"; fi
+}
+for arg in llvm_root build_dir symbols_dir install_dir; do
+    path="$(realpath "${!arg}")"
+    eval "${arg}=\"${path}\""
+done
+
+function step() {
+    separator="$(printf "%0.s-" $(seq 1 ${#1}))"
+    echo
+    echo "${separator}"
+    echo "${1}"
+    echo "${separator}"
+}
+
+for arch in ${architectures}; do
+    step "Building libc++.dylib and libc++abi.dylib for architecture ${arch}"
+    mkdir -p "${build_dir}/${arch}"
+    xcrun cmake -S "${llvm_root}/runtimes" \
+                -B "${build_dir}/${arch}" \
+                -GNinja \
+                -DCMAKE_MAKE_PROGRAM="$(xcrun --find ninja)" \
+                -C "${llvm_root}/libcxx/cmake/caches/Apple.cmake" \
+                -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
+                -DCMAKE_INSTALL_PREFIX="${build_dir}/${arch}-install" \
+                -DCMAKE_INSTALL_NAME_DIR="/usr/lib" \
+                -DCMAKE_OSX_ARCHITECTURES="${arch}" \
+                -DLIBCXXABI_LIBRARY_VERSION="${version}"
+
+    if [ "$headers_only" = true ]; then
+        xcrun cmake --build "${build_dir}/${arch}" --target install-cxx-headers install-cxxabi-headers -- -v
+    else
+        xcrun cmake --build "${build_dir}/${arch}" --target install-cxx install-cxxabi -- -v
+    fi
+done
+
+function universal_dylib() {
+    dylib=${1}
+
+    inputs=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/${dylib}"; done)
+
+    step "Creating a universal dylib ${dylib} from the dylibs for all architectures"
+    xcrun lipo -create ${inputs} -output "${build_dir}/${dylib}"
+
+    step "Installing the (stripped) universal dylib to ${install_dir}/usr/lib"
+    mkdir -p "${install_dir}/usr/lib"
+    cp "${build_dir}/${dylib}" "${install_dir}/usr/lib/${dylib}"
+    xcrun strip -S "${install_dir}/usr/lib/${dylib}"
+
+    step "Installing the unstripped dylib and the dSYM bundle to ${symbols_dir}"
+    xcrun dsymutil "${build_dir}/${dylib}" -o "${symbols_dir}/${dylib}.dSYM"
+    cp "${build_dir}/${dylib}" "${symbols_dir}/${dylib}"
+}
+
+if [ "$headers_only" != true ]; then
+    universal_dylib libc++.1.dylib
+    universal_dylib libc++abi.dylib
+    (cd "${install_dir}/usr/lib" && ln -s "libc++.1.dylib" libc++.dylib)
+fi
+
+# Install the headers by copying the headers from one of the built architectures
+# into the install directory. Headers from all architectures should be the same.
+step "Installing the libc++ and libc++abi headers to ${install_dir}/usr/include"
+any_arch=$(echo ${architectures} | cut -d ' ' -f 1)
+mkdir -p "${install_dir}/usr/include"
+ditto "${build_dir}/${any_arch}-install/include" "${install_dir}/usr/include"
+if [[ $EUID -eq 0 ]]; then # Only chown if we're running as root
+    chown -R root:wheel "${install_dir}/usr/include"
+fi
+
+if [ "$headers_only" != true ]; then
+    step "Installing the libc++ and libc++abi licenses"
+    mkdir -p "${install_dir}/usr/local/OpenSourceLicenses"
+    cp "${llvm_root}/libcxx/LICENSE.TXT" "${install_dir}/usr/local/OpenSourceLicenses/libcxx.txt"
+    cp "${llvm_root}/libcxxabi/LICENSE.TXT" "${install_dir}/usr/local/OpenSourceLicenses/libcxxabi.txt"
+
+    # Also install universal static archives for libc++ and libc++abi
+    libcxx_archives=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++.a"; done)
+    libcxxabi_archives=$(for arch in ${architectures}; do echo "${build_dir}/${arch}-install/lib/libc++abi.a"; done)
+    step "Creating universal static archives for libc++ and libc++abi from the static archives for each architecture"
+    mkdir -p "${install_dir}/usr/local/lib/libcxx"
+    xcrun libtool -static ${libcxx_archives} -o "${install_dir}/usr/local/lib/libcxx/libc++-static.a"
+    xcrun libtool -static ${libcxxabi_archives} -o "${install_dir}/usr/local/lib/libcxx/libc++abi-static.a"
+fi
diff --git a/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-clang.yml b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-clang.yml
new file mode 100644
index 0000000..b8ad2c1
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-clang.yml
@@ -0,0 +1,103 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This file describes the various pre-commit CI bots used to test Clang against
+# libc++ under various configurations. Unlike the usual libc++ CI pipeline,
+# which aims to test libc++ itself, this pipeline aims to test Clang by
+# compiling libc++ and running its test suite against the just-built Clang,
+# in various configurations.
+#
+env:
+    LLVM_HEAD_VERSION: "16"
+steps:
+  - label: "Building clang"
+    commands:
+      - "mkdir install"
+      - "cmake -S llvm -B build -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=install -DLLVM_ENABLE_PROJECTS=\"clang;compiler-rt\""
+      - "ninja -C build install-clang install-clang-resource-headers"
+      - "buildkite-agent artifact upload 'install/**/*'"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - wait
+
+  - label: "C++03"
+    commands:
+      - "buildkite-agent artifact download 'install/**' ."
+      - "export CC=$(pwd)/install/bin/clang"
+      - "export CXX=$(pwd)/install/bin/clang++"
+      - "chmod +x install/bin/clang install/bin/clang++"
+      - "libcxx/utils/ci/run-buildbot generic-cxx03"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/crash_diagnostics/*"
+    env:
+        LLVM_SYMBOLIZER_PATH: "/usr/bin/llvm-symbolizer-${LLVM_HEAD_VERSION}" # TODO: Should we build that from scratch?
+        CLANG_CRASH_DIAGNOSTICS_DIR: "crash_diagnostics"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "C++2b"
+    commands:
+      - "buildkite-agent artifact download 'install/**' ."
+      - "export CC=$(pwd)/install/bin/clang"
+      - "export CXX=$(pwd)/install/bin/clang++"
+      - "chmod +x install/bin/clang install/bin/clang++"
+      - "libcxx/utils/ci/run-buildbot generic-cxx2b"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/crash_diagnostics/*"
+    env:
+        LLVM_SYMBOLIZER_PATH: "/usr/bin/llvm-symbolizer-${LLVM_HEAD_VERSION}" # TODO: Should we build that from scratch?
+        CLANG_CRASH_DIAGNOSTICS_DIR: "crash_diagnostics"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Modules"
+    commands:
+      - "buildkite-agent artifact download 'install/**' ."
+      - "export CC=$(pwd)/install/bin/clang"
+      - "export CXX=$(pwd)/install/bin/clang++"
+      - "chmod +x install/bin/clang install/bin/clang++"
+      - "libcxx/utils/ci/run-buildbot generic-modules"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/crash_diagnostics/*"
+    env:
+        LLVM_SYMBOLIZER_PATH: "/usr/bin/llvm-symbolizer-${LLVM_HEAD_VERSION}" # TODO: Should we build that from scratch?
+        CLANG_CRASH_DIAGNOSTICS_DIR: "crash_diagnostics"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
diff --git a/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-premerge.sh b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-premerge.sh
new file mode 100644
index 0000000..d5273a0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-premerge.sh
@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This file generates a Buildkite pipeline that triggers the libc++ CI
+# job(s) if needed.
+# See https://buildkite.com/docs/agent/v3/cli-pipeline#pipeline-format.
+#
+# Invoked by CI on pre-merge check for a commit.
+#
+
+if ! git diff --name-only HEAD~1 | grep -q -E "^libcxx/|^libcxxabi/|^libunwind/|^runtimes/|^cmake/|^clang/"; then
+  # libcxx/, libcxxabi/, libunwind/, runtimes/, cmake/ or clang/ are not affected
+  exit 0
+fi
+
+reviewID="$(git log --format=%B -n 1 | sed -nE 's/^Review-ID:[[:space:]]*(.+)$/\1/p')"
+if [[ "${reviewID}" != "" ]]; then
+  buildMessage="https://llvm.org/${reviewID}"
+else
+  buildMessage="Push to branch ${BUILDKITE_BRANCH}"
+fi
+
+
+cat <<EOF
+steps:
+  - trigger: "libcxx-ci"
+    build:
+      message: "${buildMessage}"
+      commit: "${BUILDKITE_COMMIT}"
+      branch: "${BUILDKITE_BRANCH}"
+EOF
diff --git a/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-snapshot.sh b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-snapshot.sh
new file mode 100644
index 0000000..7da92a4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline-snapshot.sh
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This file generates a Buildkite pipeline that triggers the libc++ CI jobs.
+# See https://buildkite.com/docs/agent/v3/cli-pipeline#pipeline-format.
+#
+# Invoked by CI on full builds.
+#
+
+cat <<EOF
+steps:
+  - trigger: "libcxx-ci"
+    build:
+      message: "${BUILDKITE_MESSAGE}"
+      commit: "${BUILDKITE_COMMIT}"
+      branch: "${BUILDKITE_BRANCH}"
+EOF
diff --git a/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline.yml b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline.yml
new file mode 100644
index 0000000..c6339e4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/buildkite-pipeline.yml
@@ -0,0 +1,962 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This file describes the various pre-commit CI bots used to test libc++.
+#
+# This file should never contain logic -- all the logic must be offloaded
+# into scripts. This is critical to being able to reproduce CI issues outside
+# of the CI environment, which is important for debugging.
+#
+# It is also worth noting that this script is split into several sections, the
+# goal being to reduce the load on testers when a commit is known to fail.
+#
+
+# The Linux CI runners use the nightly ToT build provided by the Docker image.
+# (Note the image isn't updated daily.) The LLVM_HEAD_VERSION contains that
+# version number. The Linux CI runners for GCC use the latest stable version.
+# Theses numbers are available in all runners, making it easier to update the
+# version number.
+env:
+    LLVM_STABLE_VERSION: "15"
+    LLVM_HEAD_VERSION: "16"
+    GCC_STABLE_VERSION: "12"
+steps:
+  #
+  # Light pre-commit tests for things like formatting or when people forget
+  # to update generated files.
+  #
+  - label: "Format"
+    command: "libcxx/utils/ci/run-buildbot check-format"
+    artifact_paths:
+      - "**/clang-format.patch"
+    env:
+        GIT_CLANG_FORMAT: "/usr/bin/git-clang-format-${LLVM_STABLE_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    soft_fail:
+        - exit_status: 1
+    timeout_in_minutes: 120
+
+  - label: "Generated output"
+    command: "libcxx/utils/ci/run-buildbot check-generated-output"
+    artifact_paths:
+      - "**/generated_output.patch"
+      - "**/generated_output.status"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Documentation"
+    command: "libcxx/utils/ci/run-buildbot documentation"
+    artifact_paths:
+      - "**/test-results.xml"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  #
+  # General testing with the default configuration, under all the supported
+  # Standard modes, with Clang and GCC. This catches most issues upfront.
+  # The goal of this step is to catch most issues while being very fast.
+  #
+  - wait
+
+  - label: "GCC ${GCC_STABLE_VERSION} / C++latest"
+    command: "libcxx/utils/ci/run-buildbot generic-gcc"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "gcc-${GCC_STABLE_VERSION}"
+        CXX: "g++-${GCC_STABLE_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "C++2b"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx2b"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        ENABLE_CLANG_TIDY: "On"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Modular build"
+    command: "libcxx/utils/ci/run-buildbot generic-modules"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "C++11"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx11"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        ENABLE_CLANG_TIDY: "On"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "C++03"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx03"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        ENABLE_CLANG_TIDY: "On"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  #
+  # All other supported configurations of libc++.
+  #
+  - wait
+
+  - label: "C++20"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx20"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        ENABLE_CLANG_TIDY: "On"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "C++17"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx17"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        ENABLE_CLANG_TIDY: "On"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "C++14"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx14"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        ENABLE_CLANG_TIDY: "On"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  # Tests with the supported compilers.
+  - label: "GCC ${GCC_STABLE_VERSION} / C++11"
+    command: "libcxx/utils/ci/run-buildbot generic-gcc-cxx11"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "gcc-${GCC_STABLE_VERSION}"
+        CXX: "g++-${GCC_STABLE_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Clang 14"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx2b"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-14"
+        CXX: "clang++-14"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Clang 15"
+    command: "libcxx/utils/ci/run-buildbot generic-cxx2b"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-15"
+        CXX: "clang++-15"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  # Tests with the sanitizers.
+  - group: "Sanitizers"
+    steps:
+    - label: "ASAN"
+      command: "libcxx/utils/ci/run-buildbot generic-asan"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "TSAN"
+      command: "libcxx/utils/ci/run-buildbot generic-tsan"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "UBSAN"
+      command: "libcxx/utils/ci/run-buildbot generic-ubsan"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "MSAN"
+      command: "libcxx/utils/ci/run-buildbot generic-msan"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+  # Tests with the various supported ways to build libc++.
+  - label: "Bootstrapping build"
+    command: "libcxx/utils/ci/run-buildbot bootstrapping-build"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+      - "**/crash_diagnostics/*"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+        LLVM_SYMBOLIZER_PATH: "/usr/bin/llvm-symbolizer-${LLVM_HEAD_VERSION}"
+        CLANG_CRASH_DIAGNOSTICS_DIR: "crash_diagnostics"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  # Tests with various build configurations.
+  - label: "Static libraries"
+    command: "libcxx/utils/ci/run-buildbot generic-static"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Shared library with merged ABI and unwinder libraries"
+    command: "libcxx/utils/ci/run-buildbot generic-merged"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Assertions enabled"
+    command: "libcxx/utils/ci/run-buildbot generic-assertions"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "Debug mode"
+    command: "libcxx/utils/ci/run-buildbot generic-debug-mode"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - label: "With LLVM's libunwind"
+    command: "libcxx/utils/ci/run-buildbot generic-with_llvm_unwinder"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  - group: "Parts disabled"
+    steps:
+    - label: "No threads"
+      command: "libcxx/utils/ci/run-buildbot generic-no-threads"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No filesystem"
+      command: "libcxx/utils/ci/run-buildbot generic-no-filesystem"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No random device"
+      command: "libcxx/utils/ci/run-buildbot generic-no-random_device"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No fstream"
+      command: "libcxx/utils/ci/run-buildbot generic-no-fstream"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No locale"
+      command: "libcxx/utils/ci/run-buildbot generic-no-localization"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No Unicode"
+      command: "libcxx/utils/ci/run-buildbot generic-no-unicode"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No wide characters"
+      command: "libcxx/utils/ci/run-buildbot generic-no-wide-characters"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No experimental features"
+      command: "libcxx/utils/ci/run-buildbot generic-no-experimental"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "No exceptions"
+      command: "libcxx/utils/ci/run-buildbot generic-noexceptions"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang-${LLVM_HEAD_VERSION}"
+          CXX: "clang++-${LLVM_HEAD_VERSION}"
+      agents:
+        queue: "libcxx-builders"
+        os: "linux"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+  - label: "Unstable ABI"
+    command: "libcxx/utils/ci/run-buildbot generic-abi-unstable"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  # Other non-testing CI jobs
+  - label: "Benchmarks"
+    command: "libcxx/utils/ci/run-buildbot benchmarks"
+    artifact_paths:
+      - "**/test-results.xml"
+      - "**/*.abilist"
+    env:
+        CC: "clang-${LLVM_HEAD_VERSION}"
+        CXX: "clang++-${LLVM_HEAD_VERSION}"
+    agents:
+      queue: "libcxx-builders"
+      os: "linux"
+    retry:
+      automatic:
+        - exit_status: -1  # Agent was lost
+          limit: 2
+    timeout_in_minutes: 120
+
+  # Tests on non-Unix platforms
+  - group: ":windows: Windows"
+    steps:
+    - label: "Clang-cl (DLL)"
+      command: "bash libcxx/utils/ci/run-buildbot clang-cl-dll"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "windows"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Clang-cl (Static)"
+      command: "bash libcxx/utils/ci/run-buildbot clang-cl-static"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "windows"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Clang-cl (no vcruntime exceptions)"
+      command: "bash libcxx/utils/ci/run-buildbot clang-cl-no-vcruntime"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "windows"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+
+    - label: "MinGW (DLL, x86_64)"
+      command: "bash libcxx/utils/ci/run-buildbot mingw-dll"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "windows"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "MinGW (Static, x86_64)"
+      command: "bash libcxx/utils/ci/run-buildbot mingw-static"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "windows"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "MinGW (DLL, i686)"
+      command: "bash libcxx/utils/ci/run-buildbot mingw-dll-i686"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "windows"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+  - group: ":apple: Apple"
+    steps:
+    - label: "MacOS x86_64"
+      command: "libcxx/utils/ci/run-buildbot apple-cxx20"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+        arch: "x86_64"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "MacOS arm64"
+      command: "libcxx/utils/ci/run-buildbot apple-cxx20"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+        arch: "arm64"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    # Build with the configuration we use to generate libc++.dylib on Apple platforms
+    - label: "Apple system"
+      command: "libcxx/utils/ci/run-buildbot apple-system"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+        arch: "arm64" # This can technically run on any architecture, but we have more resources on arm64 so we pin this job to arm64
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    # Test back-deployment to older Apple platforms
+    - label: "Apple back-deployment macosx10.9"
+      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-10.9"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+        arch: "x86_64" # We need to use x86_64 for back-deployment CI on this target since macOS didn't support arm64 back then.
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Apple back-deployment macosx10.15"
+      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-10.15"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+        arch: "x86_64" # We need to use x86_64 for back-deployment CI on this target since macOS didn't support arm64 back then.
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Apple back-deployment macosx11.0 arm64"
+      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-11.0"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+        arch: "arm64"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Apple back-deployment with assertions enabled"
+      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-assertions-11.0"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders"
+        os: "macos"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+  - group: "ARM"
+    steps:
+    - label: "AArch64"
+      command: "libcxx/utils/ci/run-buildbot aarch64"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders-linaro-arm"
+        arch: "aarch64"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "AArch64 -fno-exceptions"
+      command: "libcxx/utils/ci/run-buildbot aarch64-noexceptions"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders-linaro-arm"
+        arch: "aarch64"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Armv8"
+      command: "libcxx/utils/ci/run-buildbot armv8"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders-linaro-arm"
+        arch: "armv8l"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Armv8 -fno-exceptions"
+      command: "libcxx/utils/ci/run-buildbot armv8-noexceptions"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders-linaro-arm"
+        arch: "armv8l"
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Armv7"
+      command: "libcxx/utils/ci/run-buildbot armv7"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders-linaro-arm"
+        arch: "armv8l" # Compiling for v7, running on v8 hardware
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "Armv7 -fno-exceptions"
+      command: "libcxx/utils/ci/run-buildbot armv7-noexceptions"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      agents:
+        queue: "libcxx-builders-linaro-arm"
+        arch: "armv8l" # Compiling for v7, running on v8 hardware
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+  - group: "AIX"
+    steps:
+    - label: "AIX (32-bit)"
+      command: "libcxx/utils/ci/run-buildbot aix"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang"
+          CXX: "clang++"
+          OBJECT_MODE: "32"
+      agents:
+          queue: libcxx-builders
+          os: aix
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
+
+    - label: "AIX (64-bit)"
+      command: "libcxx/utils/ci/run-buildbot aix"
+      artifact_paths:
+        - "**/test-results.xml"
+        - "**/*.abilist"
+      env:
+          CC: "clang"
+          CXX: "clang++"
+          OBJECT_MODE: "64"
+      agents:
+          queue: libcxx-builders
+          os: aix
+      retry:
+        automatic:
+          - exit_status: -1  # Agent was lost
+            limit: 2
+      timeout_in_minutes: 120
diff --git a/app/src/main/cpp/libcxx/utils/ci/generate-buildkite-pipeline b/app/src/main/cpp/libcxx/utils/ci/generate-buildkite-pipeline
new file mode 100644
index 0000000..a10309c
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/generate-buildkite-pipeline
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+#
+# This script generates the appropriate libc++ CI pipeline based on which project(s) were changed.
+#
+
+if git diff --name-only HEAD~1 | grep -q -E "^libcxx/|^libcxxabi/|^libunwind/|^runtimes/|^cmake/"; then
+  LIBCXX_CHANGED=true
+fi
+
+if git diff --name-only HEAD~1 | grep -q -E "^clang/"; then
+  CLANG_CHANGED=true
+fi
+
+if [[ "${CLANG_CHANGED}" == "true" && "${LIBCXX_CHANGED}" != "true" ]]; then
+  cat libcxx/utils/ci/buildkite-pipeline-clang.yml
+else
+  cat libcxx/utils/ci/buildkite-pipeline.yml
+fi
diff --git a/app/src/main/cpp/libcxx/utils/ci/macos-ci-setup b/app/src/main/cpp/libcxx/utils/ci/macos-ci-setup
new file mode 100644
index 0000000..fc3a6f0
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/macos-ci-setup
@@ -0,0 +1,116 @@
+#!/usr/bin/env bash
+
+# This simple script can be used to set up a CI node running MacOS.
+# An additional requirement that is *not* handled by this script is the
+# installation of Xcode, which requires manual intervention.
+#
+# This script should first be run from an administrator account to install
+# the dependencies necessary for running CI. It can be run without having
+# to clone the LLVM repository with:
+#
+#   $ /bin/bash -c "$(curl -fsSl https://raw.githubusercontent.com/llvm/llvm-project/main/libcxx/utils/ci/macos-ci-setup)"
+#
+# If you perform system updates, you should re-run the script from the
+# administrator account -- this allows updating the packages used for
+# CI and the BuildKite agent tags.
+#
+# Once the necessary dependencies have been installed, you can switch
+# to a non-administrator account and run the script again, passing the
+# --setup-launchd argument. That will install a Launchd agent to run the
+# BuildKite agent whenever the current user is logged in. You should enable
+# automatic login for that user, so that if the CI node goes down, the user
+# is logged back in automatically when the node goes up again, and the
+# BuildKite agent starts automatically.
+#
+# Alternatively, you can simply run the BuildKite agent by hand using:
+#
+#   $ caffeinate -s buildkite-agent start --build-path /tmp/buildkite-builds
+
+set -e
+
+# Install a Launchd agent that will automatically start the BuildKite agent at login
+if [[ ${1} == "--setup-launchd" ]]; then
+  HOMEBREW_PREFIX="$(brew --prefix)"
+  mkdir -p ~/Library/LaunchAgents
+  cat <<EOF > ~/Library/LaunchAgents/libcxx.buildkite-agent.plist
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>Label</key>
+  <string>libcxx.buildkite-agent</string>
+
+  <key>ProgramArguments</key>
+  <array>
+    <string>${HOMEBREW_PREFIX}/bin/buildkite-agent</string>
+    <string>start</string>
+    <string>--build-path</string>
+    <string>${HOME}/libcxx.buildkite-agent/builds</string>
+  </array>
+
+  <key>EnvironmentVariables</key>
+  <dict>
+    <key>PATH</key>
+    <string>${HOMEBREW_PREFIX}/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
+  </dict>
+
+  <key>RunAtLoad</key>
+  <true/>
+
+  <key>KeepAlive</key>
+  <dict>
+    <key>SuccessfulExit</key>
+    <false/>
+  </dict>
+
+  <key>ProcessType</key>
+  <string>Interactive</string>
+
+  <key>ThrottleInterval</key>
+  <integer>30</integer>
+
+  <key>StandardOutPath</key>
+  <string>${HOME}/libcxx.buildkite-agent/stdout.log</string>
+
+  <key>StandardErrorPath</key>
+  <string>${HOME}/libcxx.buildkite-agent/stderr.log</string>
+</dict>
+</plist>
+EOF
+
+  echo "Starting BuildKite agent"
+  launchctl load ~/Library/LaunchAgents/libcxx.buildkite-agent.plist
+
+else
+  echo "Installing CI dependencies for macOS"
+
+  if [[ -z "${BUILDKITE_AGENT_TOKEN}" ]]; then
+    echo "The BUILDKITE_AGENT_TOKEN environment variable must be set to a BuildKite Agent token when calling this script."
+    exit 1
+  fi
+
+  # Install Homebrew
+  if ! which -s brew; then
+    /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
+  fi
+
+  # Install the required tools to run CI
+  brew update
+  for package in sphinx-doc python3 ninja cmake clang-format buildkite/buildkite/buildkite-agent; do
+    if brew ls --versions "${package}" >/dev/null; then
+      brew upgrade "${package}"
+    else
+      brew install "${package}"
+    fi
+  done
+  python3 -m pip install --upgrade psutil
+
+  echo "Setting up BuildKite Agent config"
+  version="$(sw_vers -productVersion | sed -E 's/([0-9]+).([0-9]+).[0-9]+/\1.\2/')"
+  arch="$(uname -m)"
+  cat <<EOF > "$(brew --prefix)/etc/buildkite-agent/buildkite-agent.cfg"
+token="${BUILDKITE_AGENT_TOKEN}"
+tags="queue=libcxx-builders,arch=${arch},os=macos,os=macos${version}"
+build-path=/tmp/buildkite-builds # Note that this is actually overwritten when starting the agent with launchd
+EOF
+fi
diff --git a/app/src/main/cpp/libcxx/utils/ci/oss-fuzz.sh b/app/src/main/cpp/libcxx/utils/ci/oss-fuzz.sh
new file mode 100644
index 0000000..d5e7fce
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/oss-fuzz.sh
@@ -0,0 +1,34 @@
+#!/bin/bash -eu
+
+#
+# This script runs the continuous fuzzing tests on OSS-Fuzz.
+#
+
+if [[ ${SANITIZER} = *undefined* ]]; then
+  CXXFLAGS="${CXXFLAGS} -fsanitize=unsigned-integer-overflow -fsanitize-trap=unsigned-integer-overflow"
+fi
+
+BUILD=cxx_build_dir
+INSTALL=cxx_install_dir
+MONOREPO_ROOT=${PWD}
+
+mkdir ${BUILD}
+cmake -S ${MONOREPO_ROOT}/runtimes -B ${BUILD} \
+      -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
+      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+      -DCMAKE_INSTALL_PREFIX="${INSTALL}"
+cmake --build ${BUILD} --target install-cxx-headers
+
+for test in libcxx/test/libcxx/fuzzing/*.pass.cpp; do
+    exe="$(basename ${test})"
+    exe="${exe%.pass.cpp}"
+    ${CXX} ${CXXFLAGS} \
+        -std=c++14 \
+        -DLIBCPP_OSS_FUZZ \
+        -D_LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS \
+        -nostdinc++ -cxx-isystem ${INSTALL}/include/c++/v1 \
+        -lpthread -ldl \
+        -o "${OUT}/${exe}" \
+        ${test} \
+        ${LIB_FUZZING_ENGINE}
+done
diff --git a/app/src/main/cpp/libcxx/utils/ci/run-buildbot b/app/src/main/cpp/libcxx/utils/ci/run-buildbot
new file mode 100644
index 0000000..585767e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/run-buildbot
@@ -0,0 +1,683 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+set -ex
+set -o pipefail
+unset LANG
+unset LC_ALL
+unset LC_COLLATE
+
+PROGNAME="$(basename "${0}")"
+
+function usage() {
+cat <<EOF
+Usage:
+${PROGNAME} [options] <BUILDER>
+
+[-h|--help]         Display this help and exit.
+
+--llvm-root <DIR>   Path to the root of the LLVM monorepo. By default, we try
+                    to figure it out based on the current working directory.
+
+--build-dir <DIR>   The directory to use for building the library. By default,
+                    this is '<llvm-root>/build/<builder>'.
+
+--osx-roots <DIR>   Path to pre-downloaded macOS dylibs. By default, we download
+                    them from Green Dragon. This is only relevant at all when
+                    running back-deployment testing if one wants to override
+                    the old dylibs we use to run the tests with different ones.
+Environment variables
+CC                  The C compiler to use, this value is used by CMake. This
+                    variable is optional.
+CXX                 The C++ compiler to use, this value is used by CMake. This
+                    variable is optional.
+
+GIT_CLANG_FORMAT    The git-clang-format binary to use in the 'format' builder.
+                    When the value is omitted, it defaults to
+                    'git-clang-format'. This variable or its fallback must work
+                    when running the 'format' builder.
+
+ENABLE_CLANG_TIDY   Whether to compile and run clang-tidy checks. This variable
+                    is optional
+EOF
+}
+
+if [[ $# == 0 ]]; then
+   usage
+   exit 0
+fi
+
+while [[ $# -gt 0 ]]; do
+    case ${1} in
+        -h|--help)
+            usage
+            exit 0
+            ;;
+        --llvm-root)
+            MONOREPO_ROOT="${2}"
+            shift; shift
+            ;;
+        --build-dir)
+            BUILD_DIR="${2}"
+            shift; shift
+            ;;
+        --osx-roots)
+            OSX_ROOTS="${2}"
+            shift; shift
+            ;;
+        *)
+            BUILDER="${1}"
+            shift
+            ;;
+    esac
+done
+
+MONOREPO_ROOT="${MONOREPO_ROOT:="$(git rev-parse --show-toplevel)"}"
+BUILD_DIR="${BUILD_DIR:=${MONOREPO_ROOT}/build/${BUILDER}}"
+INSTALL_DIR="${BUILD_DIR}/install"
+
+# If we can find Ninja/CMake provided by Xcode, use those since we know their
+# version will generally work with the Clang shipped in Xcode (e.g. if Clang
+# knows about -std=c++20, the CMake bundled in Xcode will probably know about
+# that flag too).
+if xcrun --find ninja &>/dev/null; then NINJA="$(xcrun --find ninja)"; else NINJA="ninja"; fi
+if xcrun --find cmake &>/dev/null; then CMAKE="$(xcrun --find cmake)"; else CMAKE="cmake"; fi
+
+function clean() {
+    rm -rf "${BUILD_DIR}"
+}
+
+if [ -z "${ENABLE_CLANG_TIDY}" ]; then
+    ENABLE_CLANG_TIDY=Off
+fi
+
+function generate-cmake-base() {
+    echo "--- Generating CMake"
+    ${CMAKE} \
+          -S "${MONOREPO_ROOT}/runtimes" \
+          -B "${BUILD_DIR}" \
+          -GNinja -DCMAKE_MAKE_PROGRAM="${NINJA}" \
+          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+          -DCMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
+          -DLIBCXX_ENABLE_WERROR=YES \
+          -DLIBCXXABI_ENABLE_WERROR=YES \
+          -DLIBUNWIND_ENABLE_WERROR=YES \
+          -DLIBCXX_ENABLE_CLANG_TIDY=${ENABLE_CLANG_TIDY} \
+          -DLLVM_LIT_ARGS="-sv --show-unsupported --xunit-xml-output test-results.xml --timeout=1500 --time-tests" \
+          "${@}"
+}
+
+function generate-cmake() {
+    generate-cmake-base \
+          -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" \
+          -DLIBCXX_CXX_ABI=libcxxabi \
+          "${@}"
+}
+
+function generate-cmake-libcxx-win() {
+    # TODO: Clang-cl in MSVC configurations don't have access to compiler_rt
+    # builtins helpers for int128 division. See
+    # https://reviews.llvm.org/D91139#2429595 for a comment about longterm
+    # intent for handling the issue. In the meantime, define
+    # -D_LIBCPP_HAS_NO_INT128 (both when building the library itself and
+    # when building tests) to allow enabling filesystem for running tests,
+    # even if it uses a non-permanent ABI.
+    generate-cmake-base \
+          -DLLVM_ENABLE_RUNTIMES="libcxx" \
+          -DCMAKE_C_COMPILER=clang-cl \
+          -DCMAKE_CXX_COMPILER=clang-cl \
+          -DLIBCXX_ENABLE_FILESYSTEM=YES \
+          -DLIBCXX_EXTRA_SITE_DEFINES="_LIBCPP_HAS_NO_INT128" \
+          "${@}"
+}
+
+function check-runtimes() {
+    echo "--- Installing libc++, libc++abi and libunwind to a fake location"
+    ${NINJA} -vC "${BUILD_DIR}" install-cxx install-cxxabi install-unwind
+
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+
+    echo "+++ Running the libc++abi tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxxabi
+
+    echo "+++ Running the libunwind tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-unwind
+}
+
+# TODO: The goal is to test this against all configurations. We should also move
+#       this to the Lit test suite instead of being a separate CMake target.
+function check-abi-list() {
+    echo "+++ Running the libc++ ABI list test"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx-abilist || (
+        echo "+++ Generating the libc++ ABI list after failed check"
+        ${NINJA} -vC "${BUILD_DIR}" generate-cxx-abilist
+        false
+    )
+}
+
+function check-cxx-benchmarks() {
+    echo "--- Running the benchmarks"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx-benchmarks
+}
+
+# Print the version of a few tools to aid diagnostics in some cases
+${CMAKE} --version
+${NINJA} --version
+
+if [ ! -z "${CXX}" ]; then ${CXX} --version; fi
+
+case "${BUILDER}" in
+check-format)
+    clean
+    echo "+++ Checking formatting"
+    # We need to set --extensions so that clang-format checks extensionless files.
+    mkdir -p ${BUILD_DIR}
+    if [ -z "${GIT_CLANG_FORMAT}" ]; then
+       GIT_CLANG_FORMAT=git-clang-format
+    fi
+    ${GIT_CLANG_FORMAT} \
+        --diff \
+        --extensions ',h,hh,hpp,hxx,c,cc,cxx,cpp' HEAD~1 \
+        -- \
+            libcxx/{benchmarks,include,src,test} \
+            libcxxabi/{fuzz,include,src,test} \
+        | tee ${BUILD_DIR}/clang-format.patch
+    # Check if the diff is empty, fail otherwise.
+    ! grep -q '^--- a' ${BUILD_DIR}/clang-format.patch
+;;
+check-generated-output)
+    # `! foo` doesn't work properly with `set -e`, use `! foo || false` instead.
+    # https://stackoverflow.com/questions/57681955/set-e-does-not-respect-logical-not
+    clean
+    generate-cmake
+
+    # Reject patches that forgot to re-run the generator scripts.
+    echo "+++ Making sure the generator scripts were run"
+    ${NINJA} -vC "${BUILD_DIR}" libcxx-generate-files
+    git diff | tee ${BUILD_DIR}/generated_output.patch
+    git ls-files -o --exclude-standard | tee ${BUILD_DIR}/generated_output.status
+    ! grep -q '^--- a' ${BUILD_DIR}/generated_output.patch || false
+    if [ -s ${BUILD_DIR}/generated_output.status ]; then
+        echo "It looks like not all the generator scripts were run,"
+        echo "did you forget to build the libcxx-generate-files target?"
+        echo "Did you add all new files it generated?"
+        false
+    fi
+
+    # Reject patches that introduce non-ASCII characters or hard tabs.
+    # Depends on LC_COLLATE set at the top of this script.
+    ! grep -rn '[^ -~]' libcxx/include libcxx/src libcxx/test libcxx/benchmarks \
+           --exclude '*.dat' \
+           --exclude 'escaped_output.*.pass.cpp' \
+           --exclude 'format_tests.h' \
+           --exclude 'format.functions.tests.h' \
+           --exclude 'formatter.*.pass.cpp' \
+           --exclude 'grep.pass.cpp' \
+           --exclude 'locale-specific_form.pass.cpp' \
+           --exclude 'ostream.pass.cpp' \
+           --exclude 'std_format_spec_string_unicode.bench.cpp' \
+           --exclude 'underflow.pass.cpp' \
+           || false
+
+    # Reject code with trailing whitespace
+    ! grep -rn '[[:blank:]]$' libcxx/include libcxx/src libcxx/test libcxx/benchmarks || false
+;;
+#
+# Various Standard modes
+#
+generic-cxx03)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx03.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-cxx11)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx11.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-cxx14)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx14.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-cxx17)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx17.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-cxx20)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx20.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-cxx2b)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx2b.cmake"
+    check-runtimes
+    check-abi-list
+;;
+#
+# Other compiler support
+#
+generic-gcc)
+    clean
+    generate-cmake -DLIBCXX_ENABLE_WERROR=NO \
+                   -DLIBCXXABI_ENABLE_WERROR=NO \
+                   -DLIBUNWIND_ENABLE_WERROR=NO
+    check-runtimes
+;;
+generic-gcc-cxx11)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx11.cmake" \
+                   -DLIBCXX_ENABLE_WERROR=NO \
+                   -DLIBCXXABI_ENABLE_WERROR=NO \
+                   -DLIBUNWIND_ENABLE_WERROR=NO
+    check-runtimes
+;;
+#
+# Sanitizers
+#
+generic-asan)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-asan.cmake"
+    check-runtimes
+;;
+generic-msan)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-msan.cmake"
+    check-runtimes
+;;
+generic-tsan)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-tsan.cmake"
+    check-runtimes
+;;
+generic-ubsan)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-ubsan.cmake"
+    check-runtimes
+;;
+#
+# Various build configurations
+#
+bootstrapping-build)
+    clean
+
+    echo "--- Generating CMake"
+    ${CMAKE} \
+          -S "${MONOREPO_ROOT}/llvm" \
+          -B "${BUILD_DIR}" \
+          -GNinja -DCMAKE_MAKE_PROGRAM="${NINJA}" \
+          -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+          -DCMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
+          -DLLVM_ENABLE_PROJECTS="clang" \
+          -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" \
+          -DLLVM_RUNTIME_TARGETS="$(c++ --print-target-triple)" \
+          -DLLVM_TARGETS_TO_BUILD="host" \
+          -DRUNTIMES_BUILD_ALLOW_DARWIN=ON \
+          -DLLVM_ENABLE_ASSERTIONS=ON
+
+    echo "+++ Running the libc++ and libc++abi tests"
+    ${NINJA} -C "${BUILD_DIR}" check-runtimes
+
+    echo "--- Installing libc++ and libc++abi to a fake location"
+    ${NINJA} -C "${BUILD_DIR}" install-runtimes
+;;
+generic-static)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-static.cmake"
+    check-runtimes
+;;
+generic-merged)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-merged.cmake" \
+                   -DLIBCXX_TEST_CONFIG="llvm-libc++-shared.cfg.in" \
+                   -DLIBCXXABI_TEST_CONFIG="llvm-libc++abi-merged.cfg.in" \
+                   -DLIBUNWIND_TEST_CONFIG="llvm-libunwind-merged.cfg.in"
+    check-runtimes
+;;
+generic-assertions)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-assertions.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-debug-mode)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-debug-mode.cmake"
+    check-runtimes
+    # We don't check the ABI lists because the debug mode ABI is not stable
+;;
+generic-with_llvm_unwinder)
+    clean
+    generate-cmake -DLIBCXXABI_USE_LLVM_UNWINDER=ON
+    check-runtimes
+;;
+generic-modules)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-modules.cmake"
+    check-runtimes
+    check-abi-list
+;;
+#
+# Parts removed
+#
+generic-no-threads)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-threads.cmake"
+    check-runtimes
+;;
+generic-no-filesystem)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-filesystem.cmake"
+    check-runtimes
+;;
+generic-no-random_device)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-random_device.cmake"
+    check-runtimes
+;;
+generic-no-fstream)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-fstream.cmake"
+    check-runtimes
+;;
+generic-no-localization)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-localization.cmake"
+    check-runtimes
+;;
+generic-no-unicode)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-unicode.cmake"
+    check-runtimes
+;;
+generic-no-wide-characters)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-wide-characters.cmake"
+    check-runtimes
+;;
+generic-no-experimental)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-no-experimental.cmake"
+    check-runtimes
+    check-abi-list
+;;
+generic-noexceptions)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-noexceptions.cmake" \
+                   -DLIBCXX_ENABLE_CLANG_TIDY=ON
+    check-runtimes
+    check-abi-list
+;;
+#
+# Other miscellaneous jobs
+#
+generic-abi-unstable)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-abi-unstable.cmake"
+    check-runtimes
+;;
+apple-cxx20)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Generic-cxx20.cmake"
+    check-runtimes
+    check-abi-list
+;;
+apple-system)
+    clean
+
+    arch="$(uname -m)"
+    xcrun --sdk macosx                                              \
+        ${MONOREPO_ROOT}/libcxx/utils/ci/apple-install-libcxx.sh    \
+            --llvm-root ${MONOREPO_ROOT}                            \
+            --build-dir ${BUILD_DIR}                                \
+            --install-dir ${INSTALL_DIR}                            \
+            --symbols-dir "${BUILD_DIR}/symbols"                    \
+            --architectures "${arch}"                               \
+            --version "999.99"
+
+    # TODO: It would be better to run the tests against the fake-installed version of libc++ instead
+    xcrun --sdk macosx ninja -vC "${BUILD_DIR}/${arch}" check-cxx check-cxxabi check-cxx-abilist
+;;
+apple-system-backdeployment-assertions-*)
+    clean
+
+    if [[ "${OSX_ROOTS}" == "" ]]; then
+        echo "--- Downloading previous macOS dylibs"
+        PREVIOUS_DYLIBS_URL="https://dl.dropboxusercontent.com/s/gmcfxwgl9f9n6pu/libcxx-roots.tar.gz"
+        OSX_ROOTS="${BUILD_DIR}/macos-roots"
+        mkdir -p "${OSX_ROOTS}"
+        curl "${PREVIOUS_DYLIBS_URL}" | tar -xz --strip-components=1 -C "${OSX_ROOTS}"
+    fi
+
+    DEPLOYMENT_TARGET="${BUILDER#apple-system-backdeployment-assertions-}"
+
+    # TODO: On Apple platforms, we never produce libc++abi.1.dylib or libunwind.1.dylib,
+    #       only libc++abi.dylib and libunwind.dylib. Fix that in the build so that the
+    #       tests stop searching for @rpath/libc++abi.1.dylib and @rpath/libunwind.1.dylib.
+    cp "${OSX_ROOTS}/macOS/libc++abi/${DEPLOYMENT_TARGET}/libc++abi.dylib" \
+       "${OSX_ROOTS}/macOS/libc++abi/${DEPLOYMENT_TARGET}/libc++abi.1.dylib"
+    cp "${OSX_ROOTS}/macOS/libunwind/${DEPLOYMENT_TARGET}/libunwind.dylib" \
+       "${OSX_ROOTS}/macOS/libunwind/${DEPLOYMENT_TARGET}/libunwind.1.dylib"
+
+    arch="$(uname -m)"
+    PARAMS="target_triple=${arch}-apple-macosx${DEPLOYMENT_TARGET}"
+    PARAMS+=";cxx_runtime_root=${OSX_ROOTS}/macOS/libc++/${DEPLOYMENT_TARGET}"
+    PARAMS+=";abi_runtime_root=${OSX_ROOTS}/macOS/libc++abi/${DEPLOYMENT_TARGET}"
+    PARAMS+=";unwind_runtime_root=${OSX_ROOTS}/macOS/libunwind/${DEPLOYMENT_TARGET}"
+    PARAMS+=";use_system_cxx_lib=True"
+    PARAMS+=";enable_assertions=True"
+    # TODO: Enable experimental features during back-deployment -- right now some of the availability
+    #       annotations are incorrect, leading to test failures that could be avoided.
+    PARAMS+=";enable_experimental=False"
+
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Apple.cmake" \
+                   -DLIBCXX_TEST_CONFIG="apple-libc++-backdeployment.cfg.in" \
+                   -DLIBCXXABI_TEST_CONFIG="apple-libc++abi-backdeployment.cfg.in" \
+                   -DLIBUNWIND_TEST_CONFIG="apple-libunwind-backdeployment.cfg.in" \
+                   -DLIBCXX_TEST_PARAMS="${PARAMS}" \
+                   -DLIBCXXABI_TEST_PARAMS="${PARAMS}" \
+                   -DLIBUNWIND_TEST_PARAMS="${PARAMS}"
+
+    check-runtimes
+;;
+apple-system-backdeployment-*)
+    clean
+
+    if [[ "${OSX_ROOTS}" == "" ]]; then
+        echo "--- Downloading previous macOS dylibs"
+        PREVIOUS_DYLIBS_URL="https://dl.dropboxusercontent.com/s/gmcfxwgl9f9n6pu/libcxx-roots.tar.gz"
+        OSX_ROOTS="${BUILD_DIR}/macos-roots"
+        mkdir -p "${OSX_ROOTS}"
+        curl "${PREVIOUS_DYLIBS_URL}" | tar -xz --strip-components=1 -C "${OSX_ROOTS}"
+    fi
+
+    DEPLOYMENT_TARGET="${BUILDER#apple-system-backdeployment-}"
+
+    # TODO: On Apple platforms, we never produce libc++abi.1.dylib or libunwind.1.dylib,
+    #       only libc++abi.dylib and libunwind.dylib. Fix that in the build so that the
+    #       tests stop searching for @rpath/libc++abi.1.dylib and @rpath/libunwind.1.dylib.
+    cp "${OSX_ROOTS}/macOS/libc++abi/${DEPLOYMENT_TARGET}/libc++abi.dylib" \
+       "${OSX_ROOTS}/macOS/libc++abi/${DEPLOYMENT_TARGET}/libc++abi.1.dylib"
+    cp "${OSX_ROOTS}/macOS/libunwind/${DEPLOYMENT_TARGET}/libunwind.dylib" \
+       "${OSX_ROOTS}/macOS/libunwind/${DEPLOYMENT_TARGET}/libunwind.1.dylib"
+
+    arch="$(uname -m)"
+    PARAMS="target_triple=${arch}-apple-macosx${DEPLOYMENT_TARGET}"
+    PARAMS+=";cxx_runtime_root=${OSX_ROOTS}/macOS/libc++/${DEPLOYMENT_TARGET}"
+    PARAMS+=";abi_runtime_root=${OSX_ROOTS}/macOS/libc++abi/${DEPLOYMENT_TARGET}"
+    PARAMS+=";unwind_runtime_root=${OSX_ROOTS}/macOS/libunwind/${DEPLOYMENT_TARGET}"
+    PARAMS+=";use_system_cxx_lib=True"
+    # TODO: Enable experimental features during back-deployment -- right now some of the availability
+    #       annotations are incorrect, leading to test failures that could be avoided.
+    PARAMS+=";enable_experimental=False"
+
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Apple.cmake" \
+                   -DLIBCXX_TEST_CONFIG="apple-libc++-backdeployment.cfg.in" \
+                   -DLIBCXXABI_TEST_CONFIG="apple-libc++abi-backdeployment.cfg.in" \
+                   -DLIBUNWIND_TEST_CONFIG="apple-libunwind-backdeployment.cfg.in" \
+                   -DLIBCXX_TEST_PARAMS="${PARAMS}" \
+                   -DLIBCXXABI_TEST_PARAMS="${PARAMS}" \
+                   -DLIBUNWIND_TEST_PARAMS="${PARAMS}"
+
+    check-runtimes
+;;
+benchmarks)
+    clean
+    generate-cmake
+    check-cxx-benchmarks
+;;
+documentation)
+    clean
+    generate-cmake -DLLVM_ENABLE_SPHINX=ON
+
+    echo "+++ Generating documentation"
+    ${NINJA} -vC "${BUILD_DIR}" docs-libcxx-html
+;;
+aarch64)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/AArch64.cmake"
+    check-runtimes
+;;
+aarch64-noexceptions)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/AArch64.cmake" \
+                   -DLIBCXX_ENABLE_EXCEPTIONS=OFF \
+                   -DLIBCXXABI_ENABLE_EXCEPTIONS=OFF
+    check-runtimes
+;;
+# Aka Armv8 32 bit
+armv8)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Armv8Arm.cmake"
+    check-runtimes
+;;
+armv8-noexceptions)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Armv8Thumb-noexceptions.cmake"
+    check-runtimes
+;;
+# Armv7 32 bit. One building Arm only one Thumb only code.
+armv7)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Armv7Arm.cmake"
+    check-runtimes
+;;
+armv7-noexceptions)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/Armv7Thumb-noexceptions.cmake"
+    check-runtimes
+;;
+clang-cl-dll)
+    clean
+    # TODO: Currently, building with the experimental library breaks running
+    # tests (the test linking look for the c++experimental library with the
+    # wrong name, and the statically linked c++experimental can't be linked
+    # correctly when libc++ visibility attributes indicate dllimport linkage
+    # anyway), thus just disable the experimental library. Remove this
+    # setting when cmake and the test driver does the right thing automatically.
+    generate-cmake-libcxx-win -DLIBCXX_TEST_PARAMS="enable_experimental=False"
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+;;
+clang-cl-static)
+    clean
+    generate-cmake-libcxx-win -DLIBCXX_ENABLE_SHARED=OFF
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+;;
+clang-cl-no-vcruntime)
+    clean
+    # Building libc++ in the same way as in clang-cl-dll above, but running
+    # tests with -D_HAS_EXCEPTIONS=0, which users might set in certain
+    # translation units while using libc++, even if libc++ is built with
+    # exceptions enabled.
+    generate-cmake-libcxx-win -DLIBCXX_TEST_PARAMS="enable_experimental=False" \
+                              -DLIBCXX_TEST_CONFIG="llvm-libc++-shared-no-vcruntime-clangcl.cfg.in"
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+;;
+mingw-dll)
+    clean
+    # Explicitly specify the compiler with a triple prefix. The CI
+    # environment has got two installations of Clang; the default one
+    # defaults to MSVC mode, while there's an installation of llvm-mingw
+    # further back in PATH. By calling the compiler with an explicit
+    # triple prefix, we use the one that is bundled with a mingw sysroot.
+    generate-cmake \
+          -DCMAKE_C_COMPILER=x86_64-w64-mingw32-clang \
+          -DCMAKE_CXX_COMPILER=x86_64-w64-mingw32-clang++ \
+          -C "${MONOREPO_ROOT}/libcxx/cmake/caches/MinGW.cmake"
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+;;
+mingw-static)
+    clean
+    generate-cmake \
+          -DCMAKE_C_COMPILER=x86_64-w64-mingw32-clang \
+          -DCMAKE_CXX_COMPILER=x86_64-w64-mingw32-clang++ \
+          -C "${MONOREPO_ROOT}/libcxx/cmake/caches/MinGW.cmake" \
+          -DLIBCXX_ENABLE_SHARED=OFF \
+          -DLIBUNWIND_ENABLE_SHARED=OFF
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+;;
+mingw-dll-i686)
+    clean
+    generate-cmake \
+          -DCMAKE_C_COMPILER=i686-w64-mingw32-clang \
+          -DCMAKE_CXX_COMPILER=i686-w64-mingw32-clang++ \
+          -C "${MONOREPO_ROOT}/libcxx/cmake/caches/MinGW.cmake"
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+;;
+aix)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/AIX.cmake" \
+                   -DLIBCXX_TEST_CONFIG="ibm-libc++-shared.cfg.in" \
+                   -DLIBCXXABI_TEST_CONFIG="ibm-libc++abi-shared.cfg.in" \
+                   -DLIBUNWIND_TEST_CONFIG="ibm-libunwind-shared.cfg.in"
+    check-abi-list
+    check-runtimes
+;;
+android-ndk)
+    clean
+    generate-cmake -C "${MONOREPO_ROOT}/libcxx/cmake/caches/AndroidNDK.cmake"
+    check-abi-list
+    ${NINJA} -vC "${BUILD_DIR}" install-cxx install-cxxabi
+    echo "+++ Pushing libc++ to the device"
+    adb shell rm -fr /data/local/tmp/libc++
+    adb shell mkdir /data/local/tmp/libc++
+    adb push "${BUILD_DIR}/lib/libc++_shared.so" /data/local/tmp/libc++
+    echo "+++ Running the libc++ tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxx
+    echo "+++ Running the libc++abi tests"
+    ${NINJA} -vC "${BUILD_DIR}" check-cxxabi
+
+;;
+#################################################################
+# Insert vendor-specific internal configurations below.
+#
+# This allows vendors to extend this file with their own internal
+# configurations without running into merge conflicts with upstream.
+#################################################################
+
+#################################################################
+*)
+    echo "${BUILDER} is not a known configuration"
+    exit 1
+;;
+esac
diff --git a/app/src/main/cpp/libcxx/utils/ci/run-buildbot-container b/app/src/main/cpp/libcxx/utils/ci/run-buildbot-container
new file mode 100644
index 0000000..07fb270
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/run-buildbot-container
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# This script starts a shell in a container running the libc++ build bot Docker
+# image. That image emulates the environment used by libc++'s Linux builders on
+# BuildKite.
+#
+# Once you're inside the shell, you can run the various build jobs with the
+# `run-buildbot` script.
+#
+# This script must be run from within the LLVM monorepo. Furthermore, the
+# monorepo will be mounted as `/llvm` inside the container. Be careful, the
+# state in `/llvm` is shared between the container and the host machine, which
+# is useful for editing files on the host machine and re-running the build bot
+# in the container.
+#
+# If you are on Linux you will likely not be able to write to the mount because
+# the user in the container doesn't have permissions to do so.
+# If you need to do this, give that user permission to do so after running
+# the container or add this flag to run the container as your local user IDs:
+# --user $(id -u):$(id -g)
+
+set -e
+
+MONOREPO_ROOT="$(git rev-parse --show-toplevel)"
+if [[ ! -d "${MONOREPO_ROOT}/libcxx/utils/ci" ]]; then
+    echo "Was unable to find the root of the LLVM monorepo; are you running from within the monorepo?"
+    exit 1
+fi
+docker pull ldionne/libcxx-builder
+docker run -it --volume "${MONOREPO_ROOT}:/llvm" --workdir "/llvm" --cap-add=SYS_PTRACE ldionne/libcxx-builder \
+    bash -c 'git config --global --add safe.directory /llvm ; exec bash'
diff --git a/app/src/main/cpp/libcxx/utils/ci/run-buildbot-container-android b/app/src/main/cpp/libcxx/utils/ci/run-buildbot-container-android
new file mode 100644
index 0000000..e8cf17b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ci/run-buildbot-container-android
@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+# Starts a shell in a container running the libc++ buildbot image and prepares
+# to run tests on an Android emulator. The permissions are handled differently
+# from run-buildbot-container:
+#  - We must start docker with --privileged so that /dev/kvm exists.
+#  - The Android emulator needs access to /dev/kvm, so the container setup
+#    command runs `chmod a+rwx /dev/kvm`.
+#  - chmod must run as root. `sudo chmod` works but the initial user must exist
+#    in the container (i.e. libcxx-builder works, but `--user $(id -u):$(id -g)`
+#    doesn't.)
+#  - The emulator wants read/write access to ${HOME}.
+#  - The container user needs read/write access to the monorepo, so (try to)
+#    create another user in the container with uid/gid matching the host user.
+
+set -e
+
+MONOREPO_ROOT="$(git rev-parse --show-toplevel)"
+if [[ ! -d "${MONOREPO_ROOT}/libcxx/utils/ci" ]]; then
+    echo "Was unable to find the root of the LLVM monorepo; are you running from within the monorepo?"
+    exit 1
+fi
+docker run -it --volume "${MONOREPO_ROOT}:/llvm" \
+    --cap-add=SYS_PTRACE --privileged libcxx-builder-android \
+    /llvm/libcxx/utils/ci/android-set-user.sh $(id -un) $(id -u) $(id -gn) $(id -g) \
+    sh -c "cd /llvm && /llvm/libcxx/utils/ci/android-create-avd.sh && bash -l"
diff --git a/app/src/main/cpp/libcxx/utils/data/unicode/DerivedCoreProperties.txt b/app/src/main/cpp/libcxx/utils/data/unicode/DerivedCoreProperties.txt
new file mode 100644
index 0000000..8b482b5
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/data/unicode/DerivedCoreProperties.txt
@@ -0,0 +1,12575 @@
+# DerivedCoreProperties-15.0.0.txt
+# Date: 2022-08-05, 22:17:05 GMT
+# © 2022 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+#
+# Unicode Character Database
+#   For documentation, see https://www.unicode.org/reports/tr44/
+
+# ================================================
+
+# Derived Property: Math
+#  Generated from: Sm + Other_Math
+
+002B          ; Math # Sm       PLUS SIGN
+003C..003E    ; Math # Sm   [3] LESS-THAN SIGN..GREATER-THAN SIGN
+005E          ; Math # Sk       CIRCUMFLEX ACCENT
+007C          ; Math # Sm       VERTICAL LINE
+007E          ; Math # Sm       TILDE
+00AC          ; Math # Sm       NOT SIGN
+00B1          ; Math # Sm       PLUS-MINUS SIGN
+00D7          ; Math # Sm       MULTIPLICATION SIGN
+00F7          ; Math # Sm       DIVISION SIGN
+03D0..03D2    ; Math # L&   [3] GREEK BETA SYMBOL..GREEK UPSILON WITH HOOK SYMBOL
+03D5          ; Math # L&       GREEK PHI SYMBOL
+03F0..03F1    ; Math # L&   [2] GREEK KAPPA SYMBOL..GREEK RHO SYMBOL
+03F4..03F5    ; Math # L&   [2] GREEK CAPITAL THETA SYMBOL..GREEK LUNATE EPSILON SYMBOL
+03F6          ; Math # Sm       GREEK REVERSED LUNATE EPSILON SYMBOL
+0606..0608    ; Math # Sm   [3] ARABIC-INDIC CUBE ROOT..ARABIC RAY
+2016          ; Math # Po       DOUBLE VERTICAL LINE
+2032..2034    ; Math # Po   [3] PRIME..TRIPLE PRIME
+2040          ; Math # Pc       CHARACTER TIE
+2044          ; Math # Sm       FRACTION SLASH
+2052          ; Math # Sm       COMMERCIAL MINUS SIGN
+2061..2064    ; Math # Cf   [4] FUNCTION APPLICATION..INVISIBLE PLUS
+207A..207C    ; Math # Sm   [3] SUPERSCRIPT PLUS SIGN..SUPERSCRIPT EQUALS SIGN
+207D          ; Math # Ps       SUPERSCRIPT LEFT PARENTHESIS
+207E          ; Math # Pe       SUPERSCRIPT RIGHT PARENTHESIS
+208A..208C    ; Math # Sm   [3] SUBSCRIPT PLUS SIGN..SUBSCRIPT EQUALS SIGN
+208D          ; Math # Ps       SUBSCRIPT LEFT PARENTHESIS
+208E          ; Math # Pe       SUBSCRIPT RIGHT PARENTHESIS
+20D0..20DC    ; Math # Mn  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20E1          ; Math # Mn       COMBINING LEFT RIGHT ARROW ABOVE
+20E5..20E6    ; Math # Mn   [2] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING DOUBLE VERTICAL STROKE OVERLAY
+20EB..20EF    ; Math # Mn   [5] COMBINING LONG DOUBLE SOLIDUS OVERLAY..COMBINING RIGHT ARROW BELOW
+2102          ; Math # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; Math # L&       EULER CONSTANT
+210A..2113    ; Math # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; Math # L&       DOUBLE-STRUCK CAPITAL N
+2118          ; Math # Sm       SCRIPT CAPITAL P
+2119..211D    ; Math # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; Math # L&       DOUBLE-STRUCK CAPITAL Z
+2128          ; Math # L&       BLACK-LETTER CAPITAL Z
+2129          ; Math # So       TURNED GREEK SMALL LETTER IOTA
+212C..212D    ; Math # L&   [2] SCRIPT CAPITAL B..BLACK-LETTER CAPITAL C
+212F..2131    ; Math # L&   [3] SCRIPT SMALL E..SCRIPT CAPITAL F
+2133..2134    ; Math # L&   [2] SCRIPT CAPITAL M..SCRIPT SMALL O
+2135..2138    ; Math # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+213C..213F    ; Math # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2140..2144    ; Math # Sm   [5] DOUBLE-STRUCK N-ARY SUMMATION..TURNED SANS-SERIF CAPITAL Y
+2145..2149    ; Math # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214B          ; Math # Sm       TURNED AMPERSAND
+2190..2194    ; Math # Sm   [5] LEFTWARDS ARROW..LEFT RIGHT ARROW
+2195..2199    ; Math # So   [5] UP DOWN ARROW..SOUTH WEST ARROW
+219A..219B    ; Math # Sm   [2] LEFTWARDS ARROW WITH STROKE..RIGHTWARDS ARROW WITH STROKE
+219C..219F    ; Math # So   [4] LEFTWARDS WAVE ARROW..UPWARDS TWO HEADED ARROW
+21A0          ; Math # Sm       RIGHTWARDS TWO HEADED ARROW
+21A1..21A2    ; Math # So   [2] DOWNWARDS TWO HEADED ARROW..LEFTWARDS ARROW WITH TAIL
+21A3          ; Math # Sm       RIGHTWARDS ARROW WITH TAIL
+21A4..21A5    ; Math # So   [2] LEFTWARDS ARROW FROM BAR..UPWARDS ARROW FROM BAR
+21A6          ; Math # Sm       RIGHTWARDS ARROW FROM BAR
+21A7          ; Math # So       DOWNWARDS ARROW FROM BAR
+21A9..21AD    ; Math # So   [5] LEFTWARDS ARROW WITH HOOK..LEFT RIGHT WAVE ARROW
+21AE          ; Math # Sm       LEFT RIGHT ARROW WITH STROKE
+21B0..21B1    ; Math # So   [2] UPWARDS ARROW WITH TIP LEFTWARDS..UPWARDS ARROW WITH TIP RIGHTWARDS
+21B6..21B7    ; Math # So   [2] ANTICLOCKWISE TOP SEMICIRCLE ARROW..CLOCKWISE TOP SEMICIRCLE ARROW
+21BC..21CD    ; Math # So  [18] LEFTWARDS HARPOON WITH BARB UPWARDS..LEFTWARDS DOUBLE ARROW WITH STROKE
+21CE..21CF    ; Math # Sm   [2] LEFT RIGHT DOUBLE ARROW WITH STROKE..RIGHTWARDS DOUBLE ARROW WITH STROKE
+21D0..21D1    ; Math # So   [2] LEFTWARDS DOUBLE ARROW..UPWARDS DOUBLE ARROW
+21D2          ; Math # Sm       RIGHTWARDS DOUBLE ARROW
+21D3          ; Math # So       DOWNWARDS DOUBLE ARROW
+21D4          ; Math # Sm       LEFT RIGHT DOUBLE ARROW
+21D5..21DB    ; Math # So   [7] UP DOWN DOUBLE ARROW..RIGHTWARDS TRIPLE ARROW
+21DD          ; Math # So       RIGHTWARDS SQUIGGLE ARROW
+21E4..21E5    ; Math # So   [2] LEFTWARDS ARROW TO BAR..RIGHTWARDS ARROW TO BAR
+21F4..22FF    ; Math # Sm [268] RIGHT ARROW WITH SMALL CIRCLE..Z NOTATION BAG MEMBERSHIP
+2308          ; Math # Ps       LEFT CEILING
+2309          ; Math # Pe       RIGHT CEILING
+230A          ; Math # Ps       LEFT FLOOR
+230B          ; Math # Pe       RIGHT FLOOR
+2320..2321    ; Math # Sm   [2] TOP HALF INTEGRAL..BOTTOM HALF INTEGRAL
+237C          ; Math # Sm       RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW
+239B..23B3    ; Math # Sm  [25] LEFT PARENTHESIS UPPER HOOK..SUMMATION BOTTOM
+23B4..23B5    ; Math # So   [2] TOP SQUARE BRACKET..BOTTOM SQUARE BRACKET
+23B7          ; Math # So       RADICAL SYMBOL BOTTOM
+23D0          ; Math # So       VERTICAL LINE EXTENSION
+23DC..23E1    ; Math # Sm   [6] TOP PARENTHESIS..BOTTOM TORTOISE SHELL BRACKET
+23E2          ; Math # So       WHITE TRAPEZIUM
+25A0..25A1    ; Math # So   [2] BLACK SQUARE..WHITE SQUARE
+25AE..25B6    ; Math # So   [9] BLACK VERTICAL RECTANGLE..BLACK RIGHT-POINTING TRIANGLE
+25B7          ; Math # Sm       WHITE RIGHT-POINTING TRIANGLE
+25BC..25C0    ; Math # So   [5] BLACK DOWN-POINTING TRIANGLE..BLACK LEFT-POINTING TRIANGLE
+25C1          ; Math # Sm       WHITE LEFT-POINTING TRIANGLE
+25C6..25C7    ; Math # So   [2] BLACK DIAMOND..WHITE DIAMOND
+25CA..25CB    ; Math # So   [2] LOZENGE..WHITE CIRCLE
+25CF..25D3    ; Math # So   [5] BLACK CIRCLE..CIRCLE WITH UPPER HALF BLACK
+25E2          ; Math # So       BLACK LOWER RIGHT TRIANGLE
+25E4          ; Math # So       BLACK UPPER LEFT TRIANGLE
+25E7..25EC    ; Math # So   [6] SQUARE WITH LEFT HALF BLACK..WHITE UP-POINTING TRIANGLE WITH DOT
+25F8..25FF    ; Math # Sm   [8] UPPER LEFT TRIANGLE..LOWER RIGHT TRIANGLE
+2605..2606    ; Math # So   [2] BLACK STAR..WHITE STAR
+2640          ; Math # So       FEMALE SIGN
+2642          ; Math # So       MALE SIGN
+2660..2663    ; Math # So   [4] BLACK SPADE SUIT..BLACK CLUB SUIT
+266D..266E    ; Math # So   [2] MUSIC FLAT SIGN..MUSIC NATURAL SIGN
+266F          ; Math # Sm       MUSIC SHARP SIGN
+27C0..27C4    ; Math # Sm   [5] THREE DIMENSIONAL ANGLE..OPEN SUPERSET
+27C5          ; Math # Ps       LEFT S-SHAPED BAG DELIMITER
+27C6          ; Math # Pe       RIGHT S-SHAPED BAG DELIMITER
+27C7..27E5    ; Math # Sm  [31] OR WITH DOT INSIDE..WHITE SQUARE WITH RIGHTWARDS TICK
+27E6          ; Math # Ps       MATHEMATICAL LEFT WHITE SQUARE BRACKET
+27E7          ; Math # Pe       MATHEMATICAL RIGHT WHITE SQUARE BRACKET
+27E8          ; Math # Ps       MATHEMATICAL LEFT ANGLE BRACKET
+27E9          ; Math # Pe       MATHEMATICAL RIGHT ANGLE BRACKET
+27EA          ; Math # Ps       MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
+27EB          ; Math # Pe       MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
+27EC          ; Math # Ps       MATHEMATICAL LEFT WHITE TORTOISE SHELL BRACKET
+27ED          ; Math # Pe       MATHEMATICAL RIGHT WHITE TORTOISE SHELL BRACKET
+27EE          ; Math # Ps       MATHEMATICAL LEFT FLATTENED PARENTHESIS
+27EF          ; Math # Pe       MATHEMATICAL RIGHT FLATTENED PARENTHESIS
+27F0..27FF    ; Math # Sm  [16] UPWARDS QUADRUPLE ARROW..LONG RIGHTWARDS SQUIGGLE ARROW
+2900..2982    ; Math # Sm [131] RIGHTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE..Z NOTATION TYPE COLON
+2983          ; Math # Ps       LEFT WHITE CURLY BRACKET
+2984          ; Math # Pe       RIGHT WHITE CURLY BRACKET
+2985          ; Math # Ps       LEFT WHITE PARENTHESIS
+2986          ; Math # Pe       RIGHT WHITE PARENTHESIS
+2987          ; Math # Ps       Z NOTATION LEFT IMAGE BRACKET
+2988          ; Math # Pe       Z NOTATION RIGHT IMAGE BRACKET
+2989          ; Math # Ps       Z NOTATION LEFT BINDING BRACKET
+298A          ; Math # Pe       Z NOTATION RIGHT BINDING BRACKET
+298B          ; Math # Ps       LEFT SQUARE BRACKET WITH UNDERBAR
+298C          ; Math # Pe       RIGHT SQUARE BRACKET WITH UNDERBAR
+298D          ; Math # Ps       LEFT SQUARE BRACKET WITH TICK IN TOP CORNER
+298E          ; Math # Pe       RIGHT SQUARE BRACKET WITH TICK IN BOTTOM CORNER
+298F          ; Math # Ps       LEFT SQUARE BRACKET WITH TICK IN BOTTOM CORNER
+2990          ; Math # Pe       RIGHT SQUARE BRACKET WITH TICK IN TOP CORNER
+2991          ; Math # Ps       LEFT ANGLE BRACKET WITH DOT
+2992          ; Math # Pe       RIGHT ANGLE BRACKET WITH DOT
+2993          ; Math # Ps       LEFT ARC LESS-THAN BRACKET
+2994          ; Math # Pe       RIGHT ARC GREATER-THAN BRACKET
+2995          ; Math # Ps       DOUBLE LEFT ARC GREATER-THAN BRACKET
+2996          ; Math # Pe       DOUBLE RIGHT ARC LESS-THAN BRACKET
+2997          ; Math # Ps       LEFT BLACK TORTOISE SHELL BRACKET
+2998          ; Math # Pe       RIGHT BLACK TORTOISE SHELL BRACKET
+2999..29D7    ; Math # Sm  [63] DOTTED FENCE..BLACK HOURGLASS
+29D8          ; Math # Ps       LEFT WIGGLY FENCE
+29D9          ; Math # Pe       RIGHT WIGGLY FENCE
+29DA          ; Math # Ps       LEFT DOUBLE WIGGLY FENCE
+29DB          ; Math # Pe       RIGHT DOUBLE WIGGLY FENCE
+29DC..29FB    ; Math # Sm  [32] INCOMPLETE INFINITY..TRIPLE PLUS
+29FC          ; Math # Ps       LEFT-POINTING CURVED ANGLE BRACKET
+29FD          ; Math # Pe       RIGHT-POINTING CURVED ANGLE BRACKET
+29FE..2AFF    ; Math # Sm [258] TINY..N-ARY WHITE VERTICAL BAR
+2B30..2B44    ; Math # Sm  [21] LEFT ARROW WITH SMALL CIRCLE..RIGHTWARDS ARROW THROUGH SUPERSET
+2B47..2B4C    ; Math # Sm   [6] REVERSE TILDE OPERATOR ABOVE RIGHTWARDS ARROW..RIGHTWARDS ARROW ABOVE REVERSE TILDE OPERATOR
+FB29          ; Math # Sm       HEBREW LETTER ALTERNATIVE PLUS SIGN
+FE61          ; Math # Po       SMALL ASTERISK
+FE62          ; Math # Sm       SMALL PLUS SIGN
+FE63          ; Math # Pd       SMALL HYPHEN-MINUS
+FE64..FE66    ; Math # Sm   [3] SMALL LESS-THAN SIGN..SMALL EQUALS SIGN
+FE68          ; Math # Po       SMALL REVERSE SOLIDUS
+FF0B          ; Math # Sm       FULLWIDTH PLUS SIGN
+FF1C..FF1E    ; Math # Sm   [3] FULLWIDTH LESS-THAN SIGN..FULLWIDTH GREATER-THAN SIGN
+FF3C          ; Math # Po       FULLWIDTH REVERSE SOLIDUS
+FF3E          ; Math # Sk       FULLWIDTH CIRCUMFLEX ACCENT
+FF5C          ; Math # Sm       FULLWIDTH VERTICAL LINE
+FF5E          ; Math # Sm       FULLWIDTH TILDE
+FFE2          ; Math # Sm       FULLWIDTH NOT SIGN
+FFE9..FFEC    ; Math # Sm   [4] HALFWIDTH LEFTWARDS ARROW..HALFWIDTH DOWNWARDS ARROW
+1D400..1D454  ; Math # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; Math # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; Math # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; Math # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; Math # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; Math # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; Math # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; Math # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; Math # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; Math # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; Math # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; Math # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; Math # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; Math # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; Math # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; Math # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; Math # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; Math # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; Math # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; Math # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C1         ; Math # Sm       MATHEMATICAL BOLD NABLA
+1D6C2..1D6DA  ; Math # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DB         ; Math # Sm       MATHEMATICAL BOLD PARTIAL DIFFERENTIAL
+1D6DC..1D6FA  ; Math # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FB         ; Math # Sm       MATHEMATICAL ITALIC NABLA
+1D6FC..1D714  ; Math # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D715         ; Math # Sm       MATHEMATICAL ITALIC PARTIAL DIFFERENTIAL
+1D716..1D734  ; Math # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D735         ; Math # Sm       MATHEMATICAL BOLD ITALIC NABLA
+1D736..1D74E  ; Math # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D74F         ; Math # Sm       MATHEMATICAL BOLD ITALIC PARTIAL DIFFERENTIAL
+1D750..1D76E  ; Math # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D76F         ; Math # Sm       MATHEMATICAL SANS-SERIF BOLD NABLA
+1D770..1D788  ; Math # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D789         ; Math # Sm       MATHEMATICAL SANS-SERIF BOLD PARTIAL DIFFERENTIAL
+1D78A..1D7A8  ; Math # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7A9         ; Math # Sm       MATHEMATICAL SANS-SERIF BOLD ITALIC NABLA
+1D7AA..1D7C2  ; Math # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C3         ; Math # Sm       MATHEMATICAL SANS-SERIF BOLD ITALIC PARTIAL DIFFERENTIAL
+1D7C4..1D7CB  ; Math # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1D7CE..1D7FF  ; Math # Nd  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
+1EE00..1EE03  ; Math # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; Math # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; Math # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; Math # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; Math # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; Math # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; Math # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; Math # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; Math # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; Math # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; Math # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; Math # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; Math # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; Math # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; Math # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; Math # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; Math # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; Math # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; Math # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; Math # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; Math # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; Math # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; Math # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; Math # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; Math # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; Math # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; Math # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; Math # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; Math # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; Math # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; Math # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; Math # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; Math # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+1EEF0..1EEF1  ; Math # Sm   [2] ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WITH TATWEEL..ARABIC MATHEMATICAL OPERATOR HAH WITH DAL
+
+# Total code points: 2310
+
+# ================================================
+
+# Derived Property: Alphabetic
+#  Generated from: Uppercase + Lowercase + Lt + Lm + Lo + Nl + Other_Alphabetic
+
+0041..005A    ; Alphabetic # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+0061..007A    ; Alphabetic # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; Alphabetic # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; Alphabetic # L&       MICRO SIGN
+00BA          ; Alphabetic # Lo       MASCULINE ORDINAL INDICATOR
+00C0..00D6    ; Alphabetic # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; Alphabetic # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..01BA    ; Alphabetic # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BB          ; Alphabetic # Lo       LATIN LETTER TWO WITH STROKE
+01BC..01BF    ; Alphabetic # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C0..01C3    ; Alphabetic # Lo   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+01C4..0293    ; Alphabetic # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0294          ; Alphabetic # Lo       LATIN LETTER GLOTTAL STOP
+0295..02AF    ; Alphabetic # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02C1    ; Alphabetic # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C6..02D1    ; Alphabetic # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02E0..02E4    ; Alphabetic # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02EC          ; Alphabetic # Lm       MODIFIER LETTER VOICING
+02EE          ; Alphabetic # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+0345          ; Alphabetic # Mn       COMBINING GREEK YPOGEGRAMMENI
+0370..0373    ; Alphabetic # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0374          ; Alphabetic # Lm       GREEK NUMERAL SIGN
+0376..0377    ; Alphabetic # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037A          ; Alphabetic # Lm       GREEK YPOGEGRAMMENI
+037B..037D    ; Alphabetic # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; Alphabetic # L&       GREEK CAPITAL LETTER YOT
+0386          ; Alphabetic # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Alphabetic # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Alphabetic # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; Alphabetic # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; Alphabetic # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F7..0481    ; Alphabetic # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+048A..052F    ; Alphabetic # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; Alphabetic # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0559          ; Alphabetic # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+0560..0588    ; Alphabetic # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+05B0..05BD    ; Alphabetic # Mn  [14] HEBREW POINT SHEVA..HEBREW POINT METEG
+05BF          ; Alphabetic # Mn       HEBREW POINT RAFE
+05C1..05C2    ; Alphabetic # Mn   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; Alphabetic # Mn   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; Alphabetic # Mn       HEBREW POINT QAMATS QATAN
+05D0..05EA    ; Alphabetic # Lo  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; Alphabetic # Lo   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+0610..061A    ; Alphabetic # Mn  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+0620..063F    ; Alphabetic # Lo  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0640          ; Alphabetic # Lm       ARABIC TATWEEL
+0641..064A    ; Alphabetic # Lo  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+064B..0657    ; Alphabetic # Mn  [13] ARABIC FATHATAN..ARABIC INVERTED DAMMA
+0659..065F    ; Alphabetic # Mn   [7] ARABIC ZWARAKAY..ARABIC WAVY HAMZA BELOW
+066E..066F    ; Alphabetic # Lo   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0670          ; Alphabetic # Mn       ARABIC LETTER SUPERSCRIPT ALEF
+0671..06D3    ; Alphabetic # Lo  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D5          ; Alphabetic # Lo       ARABIC LETTER AE
+06D6..06DC    ; Alphabetic # Mn   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06E1..06E4    ; Alphabetic # Mn   [4] ARABIC SMALL HIGH DOTLESS HEAD OF KHAH..ARABIC SMALL HIGH MADDA
+06E5..06E6    ; Alphabetic # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06E7..06E8    ; Alphabetic # Mn   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06ED          ; Alphabetic # Mn       ARABIC SMALL LOW MEEM
+06EE..06EF    ; Alphabetic # Lo   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06FA..06FC    ; Alphabetic # Lo   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FF          ; Alphabetic # Lo       ARABIC LETTER HEH WITH INVERTED V
+0710          ; Alphabetic # Lo       SYRIAC LETTER ALAPH
+0711          ; Alphabetic # Mn       SYRIAC LETTER SUPERSCRIPT ALAPH
+0712..072F    ; Alphabetic # Lo  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+0730..073F    ; Alphabetic # Mn  [16] SYRIAC PTHAHA ABOVE..SYRIAC RWAHA
+074D..07A5    ; Alphabetic # Lo  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07A6..07B0    ; Alphabetic # Mn  [11] THAANA ABAFILI..THAANA SUKUN
+07B1          ; Alphabetic # Lo       THAANA LETTER NAA
+07CA..07EA    ; Alphabetic # Lo  [33] NKO LETTER A..NKO LETTER JONA RA
+07F4..07F5    ; Alphabetic # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; Alphabetic # Lm       NKO LAJANYALAN
+0800..0815    ; Alphabetic # Lo  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+0816..0817    ; Alphabetic # Mn   [2] SAMARITAN MARK IN..SAMARITAN MARK IN-ALAF
+081A          ; Alphabetic # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+081B..0823    ; Alphabetic # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0824          ; Alphabetic # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0825..0827    ; Alphabetic # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0828          ; Alphabetic # Lm       SAMARITAN MODIFIER LETTER I
+0829..082C    ; Alphabetic # Mn   [4] SAMARITAN VOWEL SIGN LONG I..SAMARITAN VOWEL SIGN SUKUN
+0840..0858    ; Alphabetic # Lo  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+0860..086A    ; Alphabetic # Lo  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; Alphabetic # Lo  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0889..088E    ; Alphabetic # Lo   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+08A0..08C8    ; Alphabetic # Lo  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+08C9          ; Alphabetic # Lm       ARABIC SMALL FARSI YEH
+08D4..08DF    ; Alphabetic # Mn  [12] ARABIC SMALL HIGH WORD AR-RUB..ARABIC SMALL HIGH WORD WAQFA
+08E3..08E9    ; Alphabetic # Mn   [7] ARABIC TURNED DAMMA BELOW..ARABIC CURLY KASRATAN
+08F0..0902    ; Alphabetic # Mn  [19] ARABIC OPEN FATHATAN..DEVANAGARI SIGN ANUSVARA
+0903          ; Alphabetic # Mc       DEVANAGARI SIGN VISARGA
+0904..0939    ; Alphabetic # Lo  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093A          ; Alphabetic # Mn       DEVANAGARI VOWEL SIGN OE
+093B          ; Alphabetic # Mc       DEVANAGARI VOWEL SIGN OOE
+093D          ; Alphabetic # Lo       DEVANAGARI SIGN AVAGRAHA
+093E..0940    ; Alphabetic # Mc   [3] DEVANAGARI VOWEL SIGN AA..DEVANAGARI VOWEL SIGN II
+0941..0948    ; Alphabetic # Mn   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+0949..094C    ; Alphabetic # Mc   [4] DEVANAGARI VOWEL SIGN CANDRA O..DEVANAGARI VOWEL SIGN AU
+094E..094F    ; Alphabetic # Mc   [2] DEVANAGARI VOWEL SIGN PRISHTHAMATRA E..DEVANAGARI VOWEL SIGN AW
+0950          ; Alphabetic # Lo       DEVANAGARI OM
+0955..0957    ; Alphabetic # Mn   [3] DEVANAGARI VOWEL SIGN CANDRA LONG E..DEVANAGARI VOWEL SIGN UUE
+0958..0961    ; Alphabetic # Lo  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0962..0963    ; Alphabetic # Mn   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0971          ; Alphabetic # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0972..0980    ; Alphabetic # Lo  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0981          ; Alphabetic # Mn       BENGALI SIGN CANDRABINDU
+0982..0983    ; Alphabetic # Mc   [2] BENGALI SIGN ANUSVARA..BENGALI SIGN VISARGA
+0985..098C    ; Alphabetic # Lo   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; Alphabetic # Lo   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; Alphabetic # Lo  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; Alphabetic # Lo   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; Alphabetic # Lo       BENGALI LETTER LA
+09B6..09B9    ; Alphabetic # Lo   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BD          ; Alphabetic # Lo       BENGALI SIGN AVAGRAHA
+09BE..09C0    ; Alphabetic # Mc   [3] BENGALI VOWEL SIGN AA..BENGALI VOWEL SIGN II
+09C1..09C4    ; Alphabetic # Mn   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09C7..09C8    ; Alphabetic # Mc   [2] BENGALI VOWEL SIGN E..BENGALI VOWEL SIGN AI
+09CB..09CC    ; Alphabetic # Mc   [2] BENGALI VOWEL SIGN O..BENGALI VOWEL SIGN AU
+09CE          ; Alphabetic # Lo       BENGALI LETTER KHANDA TA
+09D7          ; Alphabetic # Mc       BENGALI AU LENGTH MARK
+09DC..09DD    ; Alphabetic # Lo   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; Alphabetic # Lo   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09E2..09E3    ; Alphabetic # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09F0..09F1    ; Alphabetic # Lo   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09FC          ; Alphabetic # Lo       BENGALI LETTER VEDIC ANUSVARA
+0A01..0A02    ; Alphabetic # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A03          ; Alphabetic # Mc       GURMUKHI SIGN VISARGA
+0A05..0A0A    ; Alphabetic # Lo   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; Alphabetic # Lo   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; Alphabetic # Lo  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; Alphabetic # Lo   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; Alphabetic # Lo   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; Alphabetic # Lo   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; Alphabetic # Lo   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A3E..0A40    ; Alphabetic # Mc   [3] GURMUKHI VOWEL SIGN AA..GURMUKHI VOWEL SIGN II
+0A41..0A42    ; Alphabetic # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; Alphabetic # Mn   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4C    ; Alphabetic # Mn   [2] GURMUKHI VOWEL SIGN OO..GURMUKHI VOWEL SIGN AU
+0A51          ; Alphabetic # Mn       GURMUKHI SIGN UDAAT
+0A59..0A5C    ; Alphabetic # Lo   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; Alphabetic # Lo       GURMUKHI LETTER FA
+0A70..0A71    ; Alphabetic # Mn   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A72..0A74    ; Alphabetic # Lo   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A75          ; Alphabetic # Mn       GURMUKHI SIGN YAKASH
+0A81..0A82    ; Alphabetic # Mn   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0A83          ; Alphabetic # Mc       GUJARATI SIGN VISARGA
+0A85..0A8D    ; Alphabetic # Lo   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; Alphabetic # Lo   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; Alphabetic # Lo  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; Alphabetic # Lo   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; Alphabetic # Lo   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; Alphabetic # Lo   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABD          ; Alphabetic # Lo       GUJARATI SIGN AVAGRAHA
+0ABE..0AC0    ; Alphabetic # Mc   [3] GUJARATI VOWEL SIGN AA..GUJARATI VOWEL SIGN II
+0AC1..0AC5    ; Alphabetic # Mn   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; Alphabetic # Mn   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0AC9          ; Alphabetic # Mc       GUJARATI VOWEL SIGN CANDRA O
+0ACB..0ACC    ; Alphabetic # Mc   [2] GUJARATI VOWEL SIGN O..GUJARATI VOWEL SIGN AU
+0AD0          ; Alphabetic # Lo       GUJARATI OM
+0AE0..0AE1    ; Alphabetic # Lo   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AE2..0AE3    ; Alphabetic # Mn   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AF9          ; Alphabetic # Lo       GUJARATI LETTER ZHA
+0AFA..0AFC    ; Alphabetic # Mn   [3] GUJARATI SIGN SUKUN..GUJARATI SIGN MADDAH
+0B01          ; Alphabetic # Mn       ORIYA SIGN CANDRABINDU
+0B02..0B03    ; Alphabetic # Mc   [2] ORIYA SIGN ANUSVARA..ORIYA SIGN VISARGA
+0B05..0B0C    ; Alphabetic # Lo   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; Alphabetic # Lo   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; Alphabetic # Lo  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; Alphabetic # Lo   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; Alphabetic # Lo   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; Alphabetic # Lo   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3D          ; Alphabetic # Lo       ORIYA SIGN AVAGRAHA
+0B3E          ; Alphabetic # Mc       ORIYA VOWEL SIGN AA
+0B3F          ; Alphabetic # Mn       ORIYA VOWEL SIGN I
+0B40          ; Alphabetic # Mc       ORIYA VOWEL SIGN II
+0B41..0B44    ; Alphabetic # Mn   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B47..0B48    ; Alphabetic # Mc   [2] ORIYA VOWEL SIGN E..ORIYA VOWEL SIGN AI
+0B4B..0B4C    ; Alphabetic # Mc   [2] ORIYA VOWEL SIGN O..ORIYA VOWEL SIGN AU
+0B56          ; Alphabetic # Mn       ORIYA AI LENGTH MARK
+0B57          ; Alphabetic # Mc       ORIYA AU LENGTH MARK
+0B5C..0B5D    ; Alphabetic # Lo   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; Alphabetic # Lo   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B62..0B63    ; Alphabetic # Mn   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B71          ; Alphabetic # Lo       ORIYA LETTER WA
+0B82          ; Alphabetic # Mn       TAMIL SIGN ANUSVARA
+0B83          ; Alphabetic # Lo       TAMIL SIGN VISARGA
+0B85..0B8A    ; Alphabetic # Lo   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; Alphabetic # Lo   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; Alphabetic # Lo   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; Alphabetic # Lo   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; Alphabetic # Lo       TAMIL LETTER JA
+0B9E..0B9F    ; Alphabetic # Lo   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; Alphabetic # Lo   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; Alphabetic # Lo   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; Alphabetic # Lo  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BBE..0BBF    ; Alphabetic # Mc   [2] TAMIL VOWEL SIGN AA..TAMIL VOWEL SIGN I
+0BC0          ; Alphabetic # Mn       TAMIL VOWEL SIGN II
+0BC1..0BC2    ; Alphabetic # Mc   [2] TAMIL VOWEL SIGN U..TAMIL VOWEL SIGN UU
+0BC6..0BC8    ; Alphabetic # Mc   [3] TAMIL VOWEL SIGN E..TAMIL VOWEL SIGN AI
+0BCA..0BCC    ; Alphabetic # Mc   [3] TAMIL VOWEL SIGN O..TAMIL VOWEL SIGN AU
+0BD0          ; Alphabetic # Lo       TAMIL OM
+0BD7          ; Alphabetic # Mc       TAMIL AU LENGTH MARK
+0C00          ; Alphabetic # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C01..0C03    ; Alphabetic # Mc   [3] TELUGU SIGN CANDRABINDU..TELUGU SIGN VISARGA
+0C04          ; Alphabetic # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C05..0C0C    ; Alphabetic # Lo   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; Alphabetic # Lo   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; Alphabetic # Lo  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; Alphabetic # Lo  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3D          ; Alphabetic # Lo       TELUGU SIGN AVAGRAHA
+0C3E..0C40    ; Alphabetic # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C41..0C44    ; Alphabetic # Mc   [4] TELUGU VOWEL SIGN U..TELUGU VOWEL SIGN VOCALIC RR
+0C46..0C48    ; Alphabetic # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4C    ; Alphabetic # Mn   [3] TELUGU VOWEL SIGN O..TELUGU VOWEL SIGN AU
+0C55..0C56    ; Alphabetic # Mn   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C58..0C5A    ; Alphabetic # Lo   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; Alphabetic # Lo       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; Alphabetic # Lo   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C62..0C63    ; Alphabetic # Mn   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C80          ; Alphabetic # Lo       KANNADA SIGN SPACING CANDRABINDU
+0C81          ; Alphabetic # Mn       KANNADA SIGN CANDRABINDU
+0C82..0C83    ; Alphabetic # Mc   [2] KANNADA SIGN ANUSVARA..KANNADA SIGN VISARGA
+0C85..0C8C    ; Alphabetic # Lo   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; Alphabetic # Lo   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; Alphabetic # Lo  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; Alphabetic # Lo  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; Alphabetic # Lo   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBD          ; Alphabetic # Lo       KANNADA SIGN AVAGRAHA
+0CBE          ; Alphabetic # Mc       KANNADA VOWEL SIGN AA
+0CBF          ; Alphabetic # Mn       KANNADA VOWEL SIGN I
+0CC0..0CC4    ; Alphabetic # Mc   [5] KANNADA VOWEL SIGN II..KANNADA VOWEL SIGN VOCALIC RR
+0CC6          ; Alphabetic # Mn       KANNADA VOWEL SIGN E
+0CC7..0CC8    ; Alphabetic # Mc   [2] KANNADA VOWEL SIGN EE..KANNADA VOWEL SIGN AI
+0CCA..0CCB    ; Alphabetic # Mc   [2] KANNADA VOWEL SIGN O..KANNADA VOWEL SIGN OO
+0CCC          ; Alphabetic # Mn       KANNADA VOWEL SIGN AU
+0CD5..0CD6    ; Alphabetic # Mc   [2] KANNADA LENGTH MARK..KANNADA AI LENGTH MARK
+0CDD..0CDE    ; Alphabetic # Lo   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; Alphabetic # Lo   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CE2..0CE3    ; Alphabetic # Mn   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0CF1..0CF2    ; Alphabetic # Lo   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0CF3          ; Alphabetic # Mc       KANNADA SIGN COMBINING ANUSVARA ABOVE RIGHT
+0D00..0D01    ; Alphabetic # Mn   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D02..0D03    ; Alphabetic # Mc   [2] MALAYALAM SIGN ANUSVARA..MALAYALAM SIGN VISARGA
+0D04..0D0C    ; Alphabetic # Lo   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; Alphabetic # Lo   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; Alphabetic # Lo  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3D          ; Alphabetic # Lo       MALAYALAM SIGN AVAGRAHA
+0D3E..0D40    ; Alphabetic # Mc   [3] MALAYALAM VOWEL SIGN AA..MALAYALAM VOWEL SIGN II
+0D41..0D44    ; Alphabetic # Mn   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D46..0D48    ; Alphabetic # Mc   [3] MALAYALAM VOWEL SIGN E..MALAYALAM VOWEL SIGN AI
+0D4A..0D4C    ; Alphabetic # Mc   [3] MALAYALAM VOWEL SIGN O..MALAYALAM VOWEL SIGN AU
+0D4E          ; Alphabetic # Lo       MALAYALAM LETTER DOT REPH
+0D54..0D56    ; Alphabetic # Lo   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D57          ; Alphabetic # Mc       MALAYALAM AU LENGTH MARK
+0D5F..0D61    ; Alphabetic # Lo   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D62..0D63    ; Alphabetic # Mn   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D7A..0D7F    ; Alphabetic # Lo   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D81          ; Alphabetic # Mn       SINHALA SIGN CANDRABINDU
+0D82..0D83    ; Alphabetic # Mc   [2] SINHALA SIGN ANUSVARAYA..SINHALA SIGN VISARGAYA
+0D85..0D96    ; Alphabetic # Lo  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; Alphabetic # Lo  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; Alphabetic # Lo   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; Alphabetic # Lo       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; Alphabetic # Lo   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0DCF..0DD1    ; Alphabetic # Mc   [3] SINHALA VOWEL SIGN AELA-PILLA..SINHALA VOWEL SIGN DIGA AEDA-PILLA
+0DD2..0DD4    ; Alphabetic # Mn   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; Alphabetic # Mn       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0DD8..0DDF    ; Alphabetic # Mc   [8] SINHALA VOWEL SIGN GAETTA-PILLA..SINHALA VOWEL SIGN GAYANUKITTA
+0DF2..0DF3    ; Alphabetic # Mc   [2] SINHALA VOWEL SIGN DIGA GAETTA-PILLA..SINHALA VOWEL SIGN DIGA GAYANUKITTA
+0E01..0E30    ; Alphabetic # Lo  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E31          ; Alphabetic # Mn       THAI CHARACTER MAI HAN-AKAT
+0E32..0E33    ; Alphabetic # Lo   [2] THAI CHARACTER SARA AA..THAI CHARACTER SARA AM
+0E34..0E3A    ; Alphabetic # Mn   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E40..0E45    ; Alphabetic # Lo   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E46          ; Alphabetic # Lm       THAI CHARACTER MAIYAMOK
+0E4D          ; Alphabetic # Mn       THAI CHARACTER NIKHAHIT
+0E81..0E82    ; Alphabetic # Lo   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; Alphabetic # Lo       LAO LETTER KHO TAM
+0E86..0E8A    ; Alphabetic # Lo   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; Alphabetic # Lo  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; Alphabetic # Lo       LAO LETTER LO LOOT
+0EA7..0EB0    ; Alphabetic # Lo  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB1          ; Alphabetic # Mn       LAO VOWEL SIGN MAI KAN
+0EB2..0EB3    ; Alphabetic # Lo   [2] LAO VOWEL SIGN AA..LAO VOWEL SIGN AM
+0EB4..0EB9    ; Alphabetic # Mn   [6] LAO VOWEL SIGN I..LAO VOWEL SIGN UU
+0EBB..0EBC    ; Alphabetic # Mn   [2] LAO VOWEL SIGN MAI KON..LAO SEMIVOWEL SIGN LO
+0EBD          ; Alphabetic # Lo       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; Alphabetic # Lo   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EC6          ; Alphabetic # Lm       LAO KO LA
+0ECD          ; Alphabetic # Mn       LAO NIGGAHITA
+0EDC..0EDF    ; Alphabetic # Lo   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; Alphabetic # Lo       TIBETAN SYLLABLE OM
+0F40..0F47    ; Alphabetic # Lo   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; Alphabetic # Lo  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F71..0F7E    ; Alphabetic # Mn  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F7F          ; Alphabetic # Mc       TIBETAN SIGN RNAM BCAD
+0F80..0F83    ; Alphabetic # Mn   [4] TIBETAN VOWEL SIGN REVERSED I..TIBETAN SIGN SNA LDAN
+0F88..0F8C    ; Alphabetic # Lo   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+0F8D..0F97    ; Alphabetic # Mn  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; Alphabetic # Mn  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+1000..102A    ; Alphabetic # Lo  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+102B..102C    ; Alphabetic # Mc   [2] MYANMAR VOWEL SIGN TALL AA..MYANMAR VOWEL SIGN AA
+102D..1030    ; Alphabetic # Mn   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1031          ; Alphabetic # Mc       MYANMAR VOWEL SIGN E
+1032..1036    ; Alphabetic # Mn   [5] MYANMAR VOWEL SIGN AI..MYANMAR SIGN ANUSVARA
+1038          ; Alphabetic # Mc       MYANMAR SIGN VISARGA
+103B..103C    ; Alphabetic # Mc   [2] MYANMAR CONSONANT SIGN MEDIAL YA..MYANMAR CONSONANT SIGN MEDIAL RA
+103D..103E    ; Alphabetic # Mn   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+103F          ; Alphabetic # Lo       MYANMAR LETTER GREAT SA
+1050..1055    ; Alphabetic # Lo   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+1056..1057    ; Alphabetic # Mc   [2] MYANMAR VOWEL SIGN VOCALIC R..MYANMAR VOWEL SIGN VOCALIC RR
+1058..1059    ; Alphabetic # Mn   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105A..105D    ; Alphabetic # Lo   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+105E..1060    ; Alphabetic # Mn   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1061          ; Alphabetic # Lo       MYANMAR LETTER SGAW KAREN SHA
+1062..1064    ; Alphabetic # Mc   [3] MYANMAR VOWEL SIGN SGAW KAREN EU..MYANMAR TONE MARK SGAW KAREN KE PHO
+1065..1066    ; Alphabetic # Lo   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+1067..106D    ; Alphabetic # Mc   [7] MYANMAR VOWEL SIGN WESTERN PWO KAREN EU..MYANMAR SIGN WESTERN PWO KAREN TONE-5
+106E..1070    ; Alphabetic # Lo   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1071..1074    ; Alphabetic # Mn   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1075..1081    ; Alphabetic # Lo  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+1082          ; Alphabetic # Mn       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1083..1084    ; Alphabetic # Mc   [2] MYANMAR VOWEL SIGN SHAN AA..MYANMAR VOWEL SIGN SHAN E
+1085..1086    ; Alphabetic # Mn   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+1087..108C    ; Alphabetic # Mc   [6] MYANMAR SIGN SHAN TONE-2..MYANMAR SIGN SHAN COUNCIL TONE-3
+108D          ; Alphabetic # Mn       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+108E          ; Alphabetic # Lo       MYANMAR LETTER RUMAI PALAUNG FA
+108F          ; Alphabetic # Mc       MYANMAR SIGN RUMAI PALAUNG TONE-5
+109A..109C    ; Alphabetic # Mc   [3] MYANMAR SIGN KHAMTI TONE-1..MYANMAR VOWEL SIGN AITON A
+109D          ; Alphabetic # Mn       MYANMAR VOWEL SIGN AITON AI
+10A0..10C5    ; Alphabetic # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Alphabetic # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Alphabetic # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; Alphabetic # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; Alphabetic # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; Alphabetic # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+1100..1248    ; Alphabetic # Lo [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; Alphabetic # Lo       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; Alphabetic # Lo  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; Alphabetic # Lo  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; Alphabetic # Lo       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; Alphabetic # Lo  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; Alphabetic # Lo  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; Alphabetic # Lo  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+1380..138F    ; Alphabetic # Lo  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+13A0..13F5    ; Alphabetic # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; Alphabetic # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1401..166C    ; Alphabetic # Lo [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166F..167F    ; Alphabetic # Lo  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1681..169A    ; Alphabetic # Lo  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+16A0..16EA    ; Alphabetic # Lo  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16EE..16F0    ; Alphabetic # Nl   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+16F1..16F8    ; Alphabetic # Lo   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; Alphabetic # Lo  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+1712..1713    ; Alphabetic # Mn   [2] TAGALOG VOWEL SIGN I..TAGALOG VOWEL SIGN U
+171F..1731    ; Alphabetic # Lo  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1732..1733    ; Alphabetic # Mn   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1740..1751    ; Alphabetic # Lo  [18] BUHID LETTER A..BUHID LETTER HA
+1752..1753    ; Alphabetic # Mn   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1760..176C    ; Alphabetic # Lo  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; Alphabetic # Lo   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1772..1773    ; Alphabetic # Mn   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+1780..17B3    ; Alphabetic # Lo  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17B6          ; Alphabetic # Mc       KHMER VOWEL SIGN AA
+17B7..17BD    ; Alphabetic # Mn   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17BE..17C5    ; Alphabetic # Mc   [8] KHMER VOWEL SIGN OE..KHMER VOWEL SIGN AU
+17C6          ; Alphabetic # Mn       KHMER SIGN NIKAHIT
+17C7..17C8    ; Alphabetic # Mc   [2] KHMER SIGN REAHMUK..KHMER SIGN YUUKALEAPINTU
+17D7          ; Alphabetic # Lm       KHMER SIGN LEK TOO
+17DC          ; Alphabetic # Lo       KHMER SIGN AVAKRAHASANYA
+1820..1842    ; Alphabetic # Lo  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1843          ; Alphabetic # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1844..1878    ; Alphabetic # Lo  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; Alphabetic # Lo   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1885..1886    ; Alphabetic # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+1887..18A8    ; Alphabetic # Lo  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18A9          ; Alphabetic # Mn       MONGOLIAN LETTER ALI GALI DAGALGA
+18AA          ; Alphabetic # Lo       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; Alphabetic # Lo  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; Alphabetic # Lo  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1920..1922    ; Alphabetic # Mn   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1923..1926    ; Alphabetic # Mc   [4] LIMBU VOWEL SIGN EE..LIMBU VOWEL SIGN AU
+1927..1928    ; Alphabetic # Mn   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1929..192B    ; Alphabetic # Mc   [3] LIMBU SUBJOINED LETTER YA..LIMBU SUBJOINED LETTER WA
+1930..1931    ; Alphabetic # Mc   [2] LIMBU SMALL LETTER KA..LIMBU SMALL LETTER NGA
+1932          ; Alphabetic # Mn       LIMBU SMALL LETTER ANUSVARA
+1933..1938    ; Alphabetic # Mc   [6] LIMBU SMALL LETTER TA..LIMBU SMALL LETTER LA
+1950..196D    ; Alphabetic # Lo  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; Alphabetic # Lo   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; Alphabetic # Lo  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; Alphabetic # Lo  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+1A00..1A16    ; Alphabetic # Lo  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A17..1A18    ; Alphabetic # Mn   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A19..1A1A    ; Alphabetic # Mc   [2] BUGINESE VOWEL SIGN E..BUGINESE VOWEL SIGN O
+1A1B          ; Alphabetic # Mn       BUGINESE VOWEL SIGN AE
+1A20..1A54    ; Alphabetic # Lo  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1A55          ; Alphabetic # Mc       TAI THAM CONSONANT SIGN MEDIAL RA
+1A56          ; Alphabetic # Mn       TAI THAM CONSONANT SIGN MEDIAL LA
+1A57          ; Alphabetic # Mc       TAI THAM CONSONANT SIGN LA TANG LAI
+1A58..1A5E    ; Alphabetic # Mn   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A61          ; Alphabetic # Mc       TAI THAM VOWEL SIGN A
+1A62          ; Alphabetic # Mn       TAI THAM VOWEL SIGN MAI SAT
+1A63..1A64    ; Alphabetic # Mc   [2] TAI THAM VOWEL SIGN AA..TAI THAM VOWEL SIGN TALL AA
+1A65..1A6C    ; Alphabetic # Mn   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A6D..1A72    ; Alphabetic # Mc   [6] TAI THAM VOWEL SIGN OY..TAI THAM VOWEL SIGN THAM AI
+1A73..1A74    ; Alphabetic # Mn   [2] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN MAI KANG
+1AA7          ; Alphabetic # Lm       TAI THAM SIGN MAI YAMOK
+1ABF..1AC0    ; Alphabetic # Mn   [2] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER TURNED W BELOW
+1ACC..1ACE    ; Alphabetic # Mn   [3] COMBINING LATIN SMALL LETTER INSULAR G..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; Alphabetic # Mn   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B04          ; Alphabetic # Mc       BALINESE SIGN BISAH
+1B05..1B33    ; Alphabetic # Lo  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B35          ; Alphabetic # Mc       BALINESE VOWEL SIGN TEDUNG
+1B36..1B3A    ; Alphabetic # Mn   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3B          ; Alphabetic # Mc       BALINESE VOWEL SIGN RA REPA TEDUNG
+1B3C          ; Alphabetic # Mn       BALINESE VOWEL SIGN LA LENGA
+1B3D..1B41    ; Alphabetic # Mc   [5] BALINESE VOWEL SIGN LA LENGA TEDUNG..BALINESE VOWEL SIGN TALING REPA TEDUNG
+1B42          ; Alphabetic # Mn       BALINESE VOWEL SIGN PEPET
+1B43          ; Alphabetic # Mc       BALINESE VOWEL SIGN PEPET TEDUNG
+1B45..1B4C    ; Alphabetic # Lo   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B80..1B81    ; Alphabetic # Mn   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1B82          ; Alphabetic # Mc       SUNDANESE SIGN PANGWISAD
+1B83..1BA0    ; Alphabetic # Lo  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BA1          ; Alphabetic # Mc       SUNDANESE CONSONANT SIGN PAMINGKAL
+1BA2..1BA5    ; Alphabetic # Mn   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA6..1BA7    ; Alphabetic # Mc   [2] SUNDANESE VOWEL SIGN PANAELAENG..SUNDANESE VOWEL SIGN PANOLONG
+1BA8..1BA9    ; Alphabetic # Mn   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAC..1BAD    ; Alphabetic # Mn   [2] SUNDANESE CONSONANT SIGN PASANGAN MA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BAE..1BAF    ; Alphabetic # Lo   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BBA..1BE5    ; Alphabetic # Lo  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1BE7          ; Alphabetic # Mc       BATAK VOWEL SIGN E
+1BE8..1BE9    ; Alphabetic # Mn   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BEA..1BEC    ; Alphabetic # Mc   [3] BATAK VOWEL SIGN I..BATAK VOWEL SIGN O
+1BED          ; Alphabetic # Mn       BATAK VOWEL SIGN KARO O
+1BEE          ; Alphabetic # Mc       BATAK VOWEL SIGN U
+1BEF..1BF1    ; Alphabetic # Mn   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1C00..1C23    ; Alphabetic # Lo  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C24..1C2B    ; Alphabetic # Mc   [8] LEPCHA SUBJOINED LETTER YA..LEPCHA VOWEL SIGN UU
+1C2C..1C33    ; Alphabetic # Mn   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C34..1C35    ; Alphabetic # Mc   [2] LEPCHA CONSONANT SIGN NYIN-DO..LEPCHA CONSONANT SIGN KANG
+1C36          ; Alphabetic # Mn       LEPCHA SIGN RAN
+1C4D..1C4F    ; Alphabetic # Lo   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C5A..1C77    ; Alphabetic # Lo  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1C78..1C7D    ; Alphabetic # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1C80..1C88    ; Alphabetic # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; Alphabetic # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Alphabetic # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1CE9..1CEC    ; Alphabetic # Lo   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CEE..1CF3    ; Alphabetic # Lo   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF5..1CF6    ; Alphabetic # Lo   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CFA          ; Alphabetic # Lo       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+1D00..1D2B    ; Alphabetic # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; Alphabetic # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; Alphabetic # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; Alphabetic # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; Alphabetic # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; Alphabetic # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1DE7..1DF4    ; Alphabetic # Mn  [14] COMBINING LATIN SMALL LETTER ALPHA..COMBINING LATIN SMALL LETTER U WITH DIAERESIS
+1E00..1F15    ; Alphabetic # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; Alphabetic # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; Alphabetic # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; Alphabetic # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Alphabetic # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; Alphabetic # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Alphabetic # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Alphabetic # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; Alphabetic # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; Alphabetic # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; Alphabetic # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; Alphabetic # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Alphabetic # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; Alphabetic # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; Alphabetic # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; Alphabetic # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; Alphabetic # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; Alphabetic # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; Alphabetic # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2071          ; Alphabetic # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; Alphabetic # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; Alphabetic # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+2102          ; Alphabetic # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; Alphabetic # L&       EULER CONSTANT
+210A..2113    ; Alphabetic # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; Alphabetic # L&       DOUBLE-STRUCK CAPITAL N
+2119..211D    ; Alphabetic # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; Alphabetic # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; Alphabetic # L&       OHM SIGN
+2128          ; Alphabetic # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; Alphabetic # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212F..2134    ; Alphabetic # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2135..2138    ; Alphabetic # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+2139          ; Alphabetic # L&       INFORMATION SOURCE
+213C..213F    ; Alphabetic # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2145..2149    ; Alphabetic # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; Alphabetic # L&       TURNED SMALL F
+2160..2182    ; Alphabetic # Nl  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2183..2184    ; Alphabetic # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+2185..2188    ; Alphabetic # Nl   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+24B6..24E9    ; Alphabetic # So  [52] CIRCLED LATIN CAPITAL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2C00..2C7B    ; Alphabetic # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; Alphabetic # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; Alphabetic # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CEB..2CEE    ; Alphabetic # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF2..2CF3    ; Alphabetic # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Alphabetic # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Alphabetic # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Alphabetic # L&       GEORGIAN SMALL LETTER AEN
+2D30..2D67    ; Alphabetic # Lo  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D6F          ; Alphabetic # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D80..2D96    ; Alphabetic # Lo  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+2DE0..2DFF    ; Alphabetic # Mn  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+2E2F          ; Alphabetic # Lm       VERTICAL TILDE
+3005          ; Alphabetic # Lm       IDEOGRAPHIC ITERATION MARK
+3006          ; Alphabetic # Lo       IDEOGRAPHIC CLOSING MARK
+3007          ; Alphabetic # Nl       IDEOGRAPHIC NUMBER ZERO
+3021..3029    ; Alphabetic # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+3031..3035    ; Alphabetic # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+3038..303A    ; Alphabetic # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+303B          ; Alphabetic # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+303C          ; Alphabetic # Lo       MASU MARK
+3041..3096    ; Alphabetic # Lo  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+309D..309E    ; Alphabetic # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+309F          ; Alphabetic # Lo       HIRAGANA DIGRAPH YORI
+30A1..30FA    ; Alphabetic # Lo  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FC..30FE    ; Alphabetic # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+30FF          ; Alphabetic # Lo       KATAKANA DIGRAPH KOTO
+3105..312F    ; Alphabetic # Lo  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; Alphabetic # Lo  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+31A0..31BF    ; Alphabetic # Lo  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31F0..31FF    ; Alphabetic # Lo  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3400..4DBF    ; Alphabetic # Lo [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4E00..A014    ; Alphabetic # Lo [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A015          ; Alphabetic # Lm       YI SYLLABLE WU
+A016..A48C    ; Alphabetic # Lo [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A4D0..A4F7    ; Alphabetic # Lo  [40] LISU LETTER BA..LISU LETTER OE
+A4F8..A4FD    ; Alphabetic # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A500..A60B    ; Alphabetic # Lo [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A60C          ; Alphabetic # Lm       VAI SYLLABLE LENGTHENER
+A610..A61F    ; Alphabetic # Lo  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A62A..A62B    ; Alphabetic # Lo   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A640..A66D    ; Alphabetic # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A66E          ; Alphabetic # Lo       CYRILLIC LETTER MULTIOCULAR O
+A674..A67B    ; Alphabetic # Mn   [8] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC LETTER OMEGA
+A67F          ; Alphabetic # Lm       CYRILLIC PAYEROK
+A680..A69B    ; Alphabetic # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; Alphabetic # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A69E..A69F    ; Alphabetic # Mn   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6A0..A6E5    ; Alphabetic # Lo  [70] BAMUM LETTER A..BAMUM LETTER KI
+A6E6..A6EF    ; Alphabetic # Nl  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+A717..A71F    ; Alphabetic # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A722..A76F    ; Alphabetic # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; Alphabetic # Lm       MODIFIER LETTER US
+A771..A787    ; Alphabetic # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A788          ; Alphabetic # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A78B..A78E    ; Alphabetic # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A78F          ; Alphabetic # Lo       LATIN LETTER SINOLOGICAL DOT
+A790..A7CA    ; Alphabetic # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; Alphabetic # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; Alphabetic # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; Alphabetic # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; Alphabetic # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; Alphabetic # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F7          ; Alphabetic # Lo       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7F8..A7F9    ; Alphabetic # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; Alphabetic # L&       LATIN LETTER SMALL CAPITAL TURNED M
+A7FB..A801    ; Alphabetic # Lo   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A802          ; Alphabetic # Mn       SYLOTI NAGRI SIGN DVISVARA
+A803..A805    ; Alphabetic # Lo   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A807..A80A    ; Alphabetic # Lo   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80B          ; Alphabetic # Mn       SYLOTI NAGRI SIGN ANUSVARA
+A80C..A822    ; Alphabetic # Lo  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A823..A824    ; Alphabetic # Mc   [2] SYLOTI NAGRI VOWEL SIGN A..SYLOTI NAGRI VOWEL SIGN I
+A825..A826    ; Alphabetic # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A827          ; Alphabetic # Mc       SYLOTI NAGRI VOWEL SIGN OO
+A840..A873    ; Alphabetic # Lo  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A880..A881    ; Alphabetic # Mc   [2] SAURASHTRA SIGN ANUSVARA..SAURASHTRA SIGN VISARGA
+A882..A8B3    ; Alphabetic # Lo  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8B4..A8C3    ; Alphabetic # Mc  [16] SAURASHTRA CONSONANT SIGN HAARU..SAURASHTRA VOWEL SIGN AU
+A8C5          ; Alphabetic # Mn       SAURASHTRA SIGN CANDRABINDU
+A8F2..A8F7    ; Alphabetic # Lo   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8FB          ; Alphabetic # Lo       DEVANAGARI HEADSTROKE
+A8FD..A8FE    ; Alphabetic # Lo   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A8FF          ; Alphabetic # Mn       DEVANAGARI VOWEL SIGN AY
+A90A..A925    ; Alphabetic # Lo  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A926..A92A    ; Alphabetic # Mn   [5] KAYAH LI VOWEL UE..KAYAH LI VOWEL O
+A930..A946    ; Alphabetic # Lo  [23] REJANG LETTER KA..REJANG LETTER A
+A947..A951    ; Alphabetic # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A952          ; Alphabetic # Mc       REJANG CONSONANT SIGN H
+A960..A97C    ; Alphabetic # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A980..A982    ; Alphabetic # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A983          ; Alphabetic # Mc       JAVANESE SIGN WIGNYAN
+A984..A9B2    ; Alphabetic # Lo  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9B4..A9B5    ; Alphabetic # Mc   [2] JAVANESE VOWEL SIGN TARUNG..JAVANESE VOWEL SIGN TOLONG
+A9B6..A9B9    ; Alphabetic # Mn   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BA..A9BB    ; Alphabetic # Mc   [2] JAVANESE VOWEL SIGN TALING..JAVANESE VOWEL SIGN DIRGA MURE
+A9BC..A9BD    ; Alphabetic # Mn   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9BE..A9BF    ; Alphabetic # Mc   [2] JAVANESE CONSONANT SIGN PENGKAL..JAVANESE CONSONANT SIGN CAKRA
+A9CF          ; Alphabetic # Lm       JAVANESE PANGRANGKEP
+A9E0..A9E4    ; Alphabetic # Lo   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E5          ; Alphabetic # Mn       MYANMAR SIGN SHAN SAW
+A9E6          ; Alphabetic # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+A9E7..A9EF    ; Alphabetic # Lo   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9FA..A9FE    ; Alphabetic # Lo   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; Alphabetic # Lo  [41] CHAM LETTER A..CHAM LETTER HA
+AA29..AA2E    ; Alphabetic # Mn   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA2F..AA30    ; Alphabetic # Mc   [2] CHAM VOWEL SIGN O..CHAM VOWEL SIGN AI
+AA31..AA32    ; Alphabetic # Mn   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA33..AA34    ; Alphabetic # Mc   [2] CHAM CONSONANT SIGN YA..CHAM CONSONANT SIGN RA
+AA35..AA36    ; Alphabetic # Mn   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA40..AA42    ; Alphabetic # Lo   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA43          ; Alphabetic # Mn       CHAM CONSONANT SIGN FINAL NG
+AA44..AA4B    ; Alphabetic # Lo   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA4C          ; Alphabetic # Mn       CHAM CONSONANT SIGN FINAL M
+AA4D          ; Alphabetic # Mc       CHAM CONSONANT SIGN FINAL H
+AA60..AA6F    ; Alphabetic # Lo  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA70          ; Alphabetic # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA71..AA76    ; Alphabetic # Lo   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA7A          ; Alphabetic # Lo       MYANMAR LETTER AITON RA
+AA7B          ; Alphabetic # Mc       MYANMAR SIGN PAO KAREN TONE
+AA7C          ; Alphabetic # Mn       MYANMAR SIGN TAI LAING TONE-2
+AA7D          ; Alphabetic # Mc       MYANMAR SIGN TAI LAING TONE-5
+AA7E..AAAF    ; Alphabetic # Lo  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB0          ; Alphabetic # Mn       TAI VIET MAI KANG
+AAB1          ; Alphabetic # Lo       TAI VIET VOWEL AA
+AAB2..AAB4    ; Alphabetic # Mn   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB5..AAB6    ; Alphabetic # Lo   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB7..AAB8    ; Alphabetic # Mn   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AAB9..AABD    ; Alphabetic # Lo   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AABE          ; Alphabetic # Mn       TAI VIET VOWEL AM
+AAC0          ; Alphabetic # Lo       TAI VIET TONE MAI NUENG
+AAC2          ; Alphabetic # Lo       TAI VIET TONE MAI SONG
+AADB..AADC    ; Alphabetic # Lo   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AADD          ; Alphabetic # Lm       TAI VIET SYMBOL SAM
+AAE0..AAEA    ; Alphabetic # Lo  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAEB          ; Alphabetic # Mc       MEETEI MAYEK VOWEL SIGN II
+AAEC..AAED    ; Alphabetic # Mn   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAEE..AAEF    ; Alphabetic # Mc   [2] MEETEI MAYEK VOWEL SIGN AU..MEETEI MAYEK VOWEL SIGN AAU
+AAF2          ; Alphabetic # Lo       MEETEI MAYEK ANJI
+AAF3..AAF4    ; Alphabetic # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AAF5          ; Alphabetic # Mc       MEETEI MAYEK VOWEL SIGN VISARGA
+AB01..AB06    ; Alphabetic # Lo   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; Alphabetic # Lo   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; Alphabetic # Lo   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+AB30..AB5A    ; Alphabetic # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; Alphabetic # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; Alphabetic # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; Alphabetic # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; Alphabetic # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+ABC0..ABE2    ; Alphabetic # Lo  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+ABE3..ABE4    ; Alphabetic # Mc   [2] MEETEI MAYEK VOWEL SIGN ONAP..MEETEI MAYEK VOWEL SIGN INAP
+ABE5          ; Alphabetic # Mn       MEETEI MAYEK VOWEL SIGN ANAP
+ABE6..ABE7    ; Alphabetic # Mc   [2] MEETEI MAYEK VOWEL SIGN YENAP..MEETEI MAYEK VOWEL SIGN SOUNAP
+ABE8          ; Alphabetic # Mn       MEETEI MAYEK VOWEL SIGN UNAP
+ABE9..ABEA    ; Alphabetic # Mc   [2] MEETEI MAYEK VOWEL SIGN CHEINAP..MEETEI MAYEK VOWEL SIGN NUNG
+AC00..D7A3    ; Alphabetic # Lo [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; Alphabetic # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; Alphabetic # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; Alphabetic # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; Alphabetic # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB00..FB06    ; Alphabetic # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Alphabetic # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FB1D          ; Alphabetic # Lo       HEBREW LETTER YOD WITH HIRIQ
+FB1E          ; Alphabetic # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
+FB1F..FB28    ; Alphabetic # Lo  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB2A..FB36    ; Alphabetic # Lo  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; Alphabetic # Lo   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; Alphabetic # Lo       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; Alphabetic # Lo   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; Alphabetic # Lo   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; Alphabetic # Lo [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBD3..FD3D    ; Alphabetic # Lo [363] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD50..FD8F    ; Alphabetic # Lo  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; Alphabetic # Lo  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDF0..FDFB    ; Alphabetic # Lo  [12] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE JALLAJALALOUHOU
+FE70..FE74    ; Alphabetic # Lo   [5] ARABIC FATHATAN ISOLATED FORM..ARABIC KASRATAN ISOLATED FORM
+FE76..FEFC    ; Alphabetic # Lo [135] ARABIC FATHA ISOLATED FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF21..FF3A    ; Alphabetic # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF41..FF5A    ; Alphabetic # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+FF66..FF6F    ; Alphabetic # Lo  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF70          ; Alphabetic # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF71..FF9D    ; Alphabetic # Lo  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FF9E..FF9F    ; Alphabetic # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+FFA0..FFBE    ; Alphabetic # Lo  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; Alphabetic # Lo   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; Alphabetic # Lo   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; Alphabetic # Lo   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; Alphabetic # Lo   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+10000..1000B  ; Alphabetic # Lo  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; Alphabetic # Lo  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; Alphabetic # Lo  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; Alphabetic # Lo   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; Alphabetic # Lo  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; Alphabetic # Lo  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; Alphabetic # Lo [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10140..10174  ; Alphabetic # Nl  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+10280..1029C  ; Alphabetic # Lo  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; Alphabetic # Lo  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+10300..1031F  ; Alphabetic # Lo  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+1032D..10340  ; Alphabetic # Lo  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10341         ; Alphabetic # Nl       GOTHIC LETTER NINETY
+10342..10349  ; Alphabetic # Lo   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+1034A         ; Alphabetic # Nl       GOTHIC LETTER NINE HUNDRED
+10350..10375  ; Alphabetic # Lo  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10376..1037A  ; Alphabetic # Mn   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10380..1039D  ; Alphabetic # Lo  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+103A0..103C3  ; Alphabetic # Lo  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; Alphabetic # Lo   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+103D1..103D5  ; Alphabetic # Nl   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+10400..1044F  ; Alphabetic # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+10450..1049D  ; Alphabetic # Lo  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+104B0..104D3  ; Alphabetic # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; Alphabetic # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10500..10527  ; Alphabetic # Lo  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; Alphabetic # Lo  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+10570..1057A  ; Alphabetic # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Alphabetic # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Alphabetic # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Alphabetic # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; Alphabetic # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Alphabetic # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Alphabetic # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Alphabetic # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10600..10736  ; Alphabetic # Lo [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; Alphabetic # Lo  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; Alphabetic # Lo   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10780..10785  ; Alphabetic # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; Alphabetic # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; Alphabetic # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10800..10805  ; Alphabetic # Lo   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; Alphabetic # Lo       CYPRIOT SYLLABLE JO
+1080A..10835  ; Alphabetic # Lo  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; Alphabetic # Lo   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; Alphabetic # Lo       CYPRIOT SYLLABLE ZA
+1083F..10855  ; Alphabetic # Lo  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10860..10876  ; Alphabetic # Lo  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10880..1089E  ; Alphabetic # Lo  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108E0..108F2  ; Alphabetic # Lo  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; Alphabetic # Lo   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+10900..10915  ; Alphabetic # Lo  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10920..10939  ; Alphabetic # Lo  [26] LYDIAN LETTER A..LYDIAN LETTER C
+10980..109B7  ; Alphabetic # Lo  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BE..109BF  ; Alphabetic # Lo   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+10A00         ; Alphabetic # Lo       KHAROSHTHI LETTER A
+10A01..10A03  ; Alphabetic # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; Alphabetic # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; Alphabetic # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A10..10A13  ; Alphabetic # Lo   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; Alphabetic # Lo   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; Alphabetic # Lo  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A60..10A7C  ; Alphabetic # Lo  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A80..10A9C  ; Alphabetic # Lo  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10AC0..10AC7  ; Alphabetic # Lo   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC9..10AE4  ; Alphabetic # Lo  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10B00..10B35  ; Alphabetic # Lo  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B40..10B55  ; Alphabetic # Lo  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B60..10B72  ; Alphabetic # Lo  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B80..10B91  ; Alphabetic # Lo  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10C00..10C48  ; Alphabetic # Lo  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10C80..10CB2  ; Alphabetic # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; Alphabetic # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+10D00..10D23  ; Alphabetic # Lo  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10D24..10D27  ; Alphabetic # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10E80..10EA9  ; Alphabetic # Lo  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EAB..10EAC  ; Alphabetic # Mn   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EB0..10EB1  ; Alphabetic # Lo   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10F00..10F1C  ; Alphabetic # Lo  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F27         ; Alphabetic # Lo       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; Alphabetic # Lo  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F70..10F81  ; Alphabetic # Lo  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10FB0..10FC4  ; Alphabetic # Lo  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FE0..10FF6  ; Alphabetic # Lo  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11000         ; Alphabetic # Mc       BRAHMI SIGN CANDRABINDU
+11001         ; Alphabetic # Mn       BRAHMI SIGN ANUSVARA
+11002         ; Alphabetic # Mc       BRAHMI SIGN VISARGA
+11003..11037  ; Alphabetic # Lo  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11038..11045  ; Alphabetic # Mn  [14] BRAHMI VOWEL SIGN AA..BRAHMI VOWEL SIGN AU
+11071..11072  ; Alphabetic # Lo   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11073..11074  ; Alphabetic # Mn   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+11075         ; Alphabetic # Lo       BRAHMI LETTER OLD TAMIL LLA
+11080..11081  ; Alphabetic # Mn   [2] KAITHI SIGN CANDRABINDU..KAITHI SIGN ANUSVARA
+11082         ; Alphabetic # Mc       KAITHI SIGN VISARGA
+11083..110AF  ; Alphabetic # Lo  [45] KAITHI LETTER A..KAITHI LETTER HA
+110B0..110B2  ; Alphabetic # Mc   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
+110B3..110B6  ; Alphabetic # Mn   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B7..110B8  ; Alphabetic # Mc   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
+110C2         ; Alphabetic # Mn       KAITHI VOWEL SIGN VOCALIC R
+110D0..110E8  ; Alphabetic # Lo  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+11100..11102  ; Alphabetic # Mn   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11103..11126  ; Alphabetic # Lo  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+11127..1112B  ; Alphabetic # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112C         ; Alphabetic # Mc       CHAKMA VOWEL SIGN E
+1112D..11132  ; Alphabetic # Mn   [6] CHAKMA VOWEL SIGN AI..CHAKMA AU MARK
+11144         ; Alphabetic # Lo       CHAKMA LETTER LHAA
+11145..11146  ; Alphabetic # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
+11147         ; Alphabetic # Lo       CHAKMA LETTER VAA
+11150..11172  ; Alphabetic # Lo  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11176         ; Alphabetic # Lo       MAHAJANI LIGATURE SHRI
+11180..11181  ; Alphabetic # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+11182         ; Alphabetic # Mc       SHARADA SIGN VISARGA
+11183..111B2  ; Alphabetic # Lo  [48] SHARADA LETTER A..SHARADA LETTER HA
+111B3..111B5  ; Alphabetic # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
+111B6..111BE  ; Alphabetic # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111BF         ; Alphabetic # Mc       SHARADA VOWEL SIGN AU
+111C1..111C4  ; Alphabetic # Lo   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111CE         ; Alphabetic # Mc       SHARADA VOWEL SIGN PRISHTHAMATRA E
+111CF         ; Alphabetic # Mn       SHARADA SIGN INVERTED CANDRABINDU
+111DA         ; Alphabetic # Lo       SHARADA EKAM
+111DC         ; Alphabetic # Lo       SHARADA HEADSTROKE
+11200..11211  ; Alphabetic # Lo  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; Alphabetic # Lo  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1122C..1122E  ; Alphabetic # Mc   [3] KHOJKI VOWEL SIGN AA..KHOJKI VOWEL SIGN II
+1122F..11231  ; Alphabetic # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11232..11233  ; Alphabetic # Mc   [2] KHOJKI VOWEL SIGN O..KHOJKI VOWEL SIGN AU
+11234         ; Alphabetic # Mn       KHOJKI SIGN ANUSVARA
+11237         ; Alphabetic # Mn       KHOJKI SIGN SHADDA
+1123E         ; Alphabetic # Mn       KHOJKI SIGN SUKUN
+1123F..11240  ; Alphabetic # Lo   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11241         ; Alphabetic # Mn       KHOJKI VOWEL SIGN VOCALIC R
+11280..11286  ; Alphabetic # Lo   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; Alphabetic # Lo       MULTANI LETTER GHA
+1128A..1128D  ; Alphabetic # Lo   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; Alphabetic # Lo  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; Alphabetic # Lo  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112B0..112DE  ; Alphabetic # Lo  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+112DF         ; Alphabetic # Mn       KHUDAWADI SIGN ANUSVARA
+112E0..112E2  ; Alphabetic # Mc   [3] KHUDAWADI VOWEL SIGN AA..KHUDAWADI VOWEL SIGN II
+112E3..112E8  ; Alphabetic # Mn   [6] KHUDAWADI VOWEL SIGN U..KHUDAWADI VOWEL SIGN AU
+11300..11301  ; Alphabetic # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+11302..11303  ; Alphabetic # Mc   [2] GRANTHA SIGN ANUSVARA..GRANTHA SIGN VISARGA
+11305..1130C  ; Alphabetic # Lo   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; Alphabetic # Lo   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; Alphabetic # Lo  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; Alphabetic # Lo   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; Alphabetic # Lo   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; Alphabetic # Lo   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133D         ; Alphabetic # Lo       GRANTHA SIGN AVAGRAHA
+1133E..1133F  ; Alphabetic # Mc   [2] GRANTHA VOWEL SIGN AA..GRANTHA VOWEL SIGN I
+11340         ; Alphabetic # Mn       GRANTHA VOWEL SIGN II
+11341..11344  ; Alphabetic # Mc   [4] GRANTHA VOWEL SIGN U..GRANTHA VOWEL SIGN VOCALIC RR
+11347..11348  ; Alphabetic # Mc   [2] GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
+1134B..1134C  ; Alphabetic # Mc   [2] GRANTHA VOWEL SIGN OO..GRANTHA VOWEL SIGN AU
+11350         ; Alphabetic # Lo       GRANTHA OM
+11357         ; Alphabetic # Mc       GRANTHA AU LENGTH MARK
+1135D..11361  ; Alphabetic # Lo   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11362..11363  ; Alphabetic # Mc   [2] GRANTHA VOWEL SIGN VOCALIC L..GRANTHA VOWEL SIGN VOCALIC LL
+11400..11434  ; Alphabetic # Lo  [53] NEWA LETTER A..NEWA LETTER HA
+11435..11437  ; Alphabetic # Mc   [3] NEWA VOWEL SIGN AA..NEWA VOWEL SIGN II
+11438..1143F  ; Alphabetic # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11440..11441  ; Alphabetic # Mc   [2] NEWA VOWEL SIGN O..NEWA VOWEL SIGN AU
+11443..11444  ; Alphabetic # Mn   [2] NEWA SIGN CANDRABINDU..NEWA SIGN ANUSVARA
+11445         ; Alphabetic # Mc       NEWA SIGN VISARGA
+11447..1144A  ; Alphabetic # Lo   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+1145F..11461  ; Alphabetic # Lo   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; Alphabetic # Lo  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114B0..114B2  ; Alphabetic # Mc   [3] TIRHUTA VOWEL SIGN AA..TIRHUTA VOWEL SIGN II
+114B3..114B8  ; Alphabetic # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114B9         ; Alphabetic # Mc       TIRHUTA VOWEL SIGN E
+114BA         ; Alphabetic # Mn       TIRHUTA VOWEL SIGN SHORT E
+114BB..114BE  ; Alphabetic # Mc   [4] TIRHUTA VOWEL SIGN AI..TIRHUTA VOWEL SIGN AU
+114BF..114C0  ; Alphabetic # Mn   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C1         ; Alphabetic # Mc       TIRHUTA SIGN VISARGA
+114C4..114C5  ; Alphabetic # Lo   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C7         ; Alphabetic # Lo       TIRHUTA OM
+11580..115AE  ; Alphabetic # Lo  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115AF..115B1  ; Alphabetic # Mc   [3] SIDDHAM VOWEL SIGN AA..SIDDHAM VOWEL SIGN II
+115B2..115B5  ; Alphabetic # Mn   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115B8..115BB  ; Alphabetic # Mc   [4] SIDDHAM VOWEL SIGN E..SIDDHAM VOWEL SIGN AU
+115BC..115BD  ; Alphabetic # Mn   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BE         ; Alphabetic # Mc       SIDDHAM SIGN VISARGA
+115D8..115DB  ; Alphabetic # Lo   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+115DC..115DD  ; Alphabetic # Mn   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11600..1162F  ; Alphabetic # Lo  [48] MODI LETTER A..MODI LETTER LLA
+11630..11632  ; Alphabetic # Mc   [3] MODI VOWEL SIGN AA..MODI VOWEL SIGN II
+11633..1163A  ; Alphabetic # Mn   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163B..1163C  ; Alphabetic # Mc   [2] MODI VOWEL SIGN O..MODI VOWEL SIGN AU
+1163D         ; Alphabetic # Mn       MODI SIGN ANUSVARA
+1163E         ; Alphabetic # Mc       MODI SIGN VISARGA
+11640         ; Alphabetic # Mn       MODI SIGN ARDHACANDRA
+11644         ; Alphabetic # Lo       MODI SIGN HUVA
+11680..116AA  ; Alphabetic # Lo  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116AB         ; Alphabetic # Mn       TAKRI SIGN ANUSVARA
+116AC         ; Alphabetic # Mc       TAKRI SIGN VISARGA
+116AD         ; Alphabetic # Mn       TAKRI VOWEL SIGN AA
+116AE..116AF  ; Alphabetic # Mc   [2] TAKRI VOWEL SIGN I..TAKRI VOWEL SIGN II
+116B0..116B5  ; Alphabetic # Mn   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B8         ; Alphabetic # Lo       TAKRI LETTER ARCHAIC KHA
+11700..1171A  ; Alphabetic # Lo  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+1171D..1171F  ; Alphabetic # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11720..11721  ; Alphabetic # Mc   [2] AHOM VOWEL SIGN A..AHOM VOWEL SIGN AA
+11722..11725  ; Alphabetic # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11726         ; Alphabetic # Mc       AHOM VOWEL SIGN E
+11727..1172A  ; Alphabetic # Mn   [4] AHOM VOWEL SIGN AW..AHOM VOWEL SIGN AM
+11740..11746  ; Alphabetic # Lo   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; Alphabetic # Lo  [44] DOGRA LETTER A..DOGRA LETTER RRA
+1182C..1182E  ; Alphabetic # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+1182F..11837  ; Alphabetic # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11838         ; Alphabetic # Mc       DOGRA SIGN VISARGA
+118A0..118DF  ; Alphabetic # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+118FF..11906  ; Alphabetic # Lo   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; Alphabetic # Lo       DIVES AKURU LETTER O
+1190C..11913  ; Alphabetic # Lo   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; Alphabetic # Lo   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; Alphabetic # Lo  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+11930..11935  ; Alphabetic # Mc   [6] DIVES AKURU VOWEL SIGN AA..DIVES AKURU VOWEL SIGN E
+11937..11938  ; Alphabetic # Mc   [2] DIVES AKURU VOWEL SIGN AI..DIVES AKURU VOWEL SIGN O
+1193B..1193C  ; Alphabetic # Mn   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193F         ; Alphabetic # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11940         ; Alphabetic # Mc       DIVES AKURU MEDIAL YA
+11941         ; Alphabetic # Lo       DIVES AKURU INITIAL RA
+11942         ; Alphabetic # Mc       DIVES AKURU MEDIAL RA
+119A0..119A7  ; Alphabetic # Lo   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; Alphabetic # Lo  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119D1..119D3  ; Alphabetic # Mc   [3] NANDINAGARI VOWEL SIGN AA..NANDINAGARI VOWEL SIGN II
+119D4..119D7  ; Alphabetic # Mn   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; Alphabetic # Mn   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119DC..119DF  ; Alphabetic # Mc   [4] NANDINAGARI VOWEL SIGN O..NANDINAGARI SIGN VISARGA
+119E1         ; Alphabetic # Lo       NANDINAGARI SIGN AVAGRAHA
+119E3         ; Alphabetic # Lo       NANDINAGARI HEADSTROKE
+119E4         ; Alphabetic # Mc       NANDINAGARI VOWEL SIGN PRISHTHAMATRA E
+11A00         ; Alphabetic # Lo       ZANABAZAR SQUARE LETTER A
+11A01..11A0A  ; Alphabetic # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A0B..11A32  ; Alphabetic # Lo  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A35..11A38  ; Alphabetic # Mn   [4] ZANABAZAR SQUARE SIGN CANDRABINDU..ZANABAZAR SQUARE SIGN ANUSVARA
+11A39         ; Alphabetic # Mc       ZANABAZAR SQUARE SIGN VISARGA
+11A3A         ; Alphabetic # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A3B..11A3E  ; Alphabetic # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A50         ; Alphabetic # Lo       SOYOMBO LETTER A
+11A51..11A56  ; Alphabetic # Mn   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A57..11A58  ; Alphabetic # Mc   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
+11A59..11A5B  ; Alphabetic # Mn   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A5C..11A89  ; Alphabetic # Lo  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A8A..11A96  ; Alphabetic # Mn  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A97         ; Alphabetic # Mc       SOYOMBO SIGN VISARGA
+11A9D         ; Alphabetic # Lo       SOYOMBO MARK PLUTA
+11AB0..11AF8  ; Alphabetic # Lo  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11C00..11C08  ; Alphabetic # Lo   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; Alphabetic # Lo  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C2F         ; Alphabetic # Mc       BHAIKSUKI VOWEL SIGN AA
+11C30..11C36  ; Alphabetic # Mn   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; Alphabetic # Mn   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3E         ; Alphabetic # Mc       BHAIKSUKI SIGN VISARGA
+11C40         ; Alphabetic # Lo       BHAIKSUKI SIGN AVAGRAHA
+11C72..11C8F  ; Alphabetic # Lo  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11C92..11CA7  ; Alphabetic # Mn  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CA9         ; Alphabetic # Mc       MARCHEN SUBJOINED LETTER YA
+11CAA..11CB0  ; Alphabetic # Mn   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB1         ; Alphabetic # Mc       MARCHEN VOWEL SIGN I
+11CB2..11CB3  ; Alphabetic # Mn   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB4         ; Alphabetic # Mc       MARCHEN VOWEL SIGN O
+11CB5..11CB6  ; Alphabetic # Mn   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D00..11D06  ; Alphabetic # Lo   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; Alphabetic # Lo   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; Alphabetic # Lo  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D31..11D36  ; Alphabetic # Mn   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; Alphabetic # Mn       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; Alphabetic # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D41  ; Alphabetic # Mn   [3] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI SIGN VISARGA
+11D43         ; Alphabetic # Mn       MASARAM GONDI SIGN CANDRA
+11D46         ; Alphabetic # Lo       MASARAM GONDI REPHA
+11D47         ; Alphabetic # Mn       MASARAM GONDI RA-KARA
+11D60..11D65  ; Alphabetic # Lo   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; Alphabetic # Lo   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; Alphabetic # Lo  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D8A..11D8E  ; Alphabetic # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D90..11D91  ; Alphabetic # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D93..11D94  ; Alphabetic # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D95         ; Alphabetic # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D96         ; Alphabetic # Mc       GUNJALA GONDI SIGN VISARGA
+11D98         ; Alphabetic # Lo       GUNJALA GONDI OM
+11EE0..11EF2  ; Alphabetic # Lo  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11EF3..11EF4  ; Alphabetic # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11EF5..11EF6  ; Alphabetic # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
+11F00..11F01  ; Alphabetic # Mn   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F02         ; Alphabetic # Lo       KAWI SIGN REPHA
+11F03         ; Alphabetic # Mc       KAWI SIGN VISARGA
+11F04..11F10  ; Alphabetic # Lo  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; Alphabetic # Lo  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11F34..11F35  ; Alphabetic # Mc   [2] KAWI VOWEL SIGN AA..KAWI VOWEL SIGN ALTERNATE AA
+11F36..11F3A  ; Alphabetic # Mn   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F3E..11F3F  ; Alphabetic # Mc   [2] KAWI VOWEL SIGN E..KAWI VOWEL SIGN AI
+11F40         ; Alphabetic # Mn       KAWI VOWEL SIGN EU
+11FB0         ; Alphabetic # Lo       LISU LETTER YHA
+12000..12399  ; Alphabetic # Lo [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12400..1246E  ; Alphabetic # Nl [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+12480..12543  ; Alphabetic # Lo [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; Alphabetic # Lo  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+13000..1342F  ; Alphabetic # Lo [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13441..13446  ; Alphabetic # Lo   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+14400..14646  ; Alphabetic # Lo [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; Alphabetic # Lo [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; Alphabetic # Lo  [31] MRO LETTER TA..MRO LETTER TEK
+16A70..16ABE  ; Alphabetic # Lo  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AD0..16AED  ; Alphabetic # Lo  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16B00..16B2F  ; Alphabetic # Lo  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B40..16B43  ; Alphabetic # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16B63..16B77  ; Alphabetic # Lo  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; Alphabetic # Lo  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16E40..16E7F  ; Alphabetic # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+16F00..16F4A  ; Alphabetic # Lo  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F4F         ; Alphabetic # Mn       MIAO SIGN CONSONANT MODIFIER BAR
+16F50         ; Alphabetic # Lo       MIAO LETTER NASALIZATION
+16F51..16F87  ; Alphabetic # Mc  [55] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN UI
+16F8F..16F92  ; Alphabetic # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16F93..16F9F  ; Alphabetic # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; Alphabetic # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; Alphabetic # Lm       OLD CHINESE ITERATION MARK
+16FF0..16FF1  ; Alphabetic # Mc   [2] VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
+17000..187F7  ; Alphabetic # Lo [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; Alphabetic # Lo [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; Alphabetic # Lo   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1AFF0..1AFF3  ; Alphabetic # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; Alphabetic # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; Alphabetic # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1B000..1B122  ; Alphabetic # Lo [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; Alphabetic # Lo       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; Alphabetic # Lo   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; Alphabetic # Lo       KATAKANA LETTER SMALL KO
+1B164..1B167  ; Alphabetic # Lo   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; Alphabetic # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; Alphabetic # Lo [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; Alphabetic # Lo  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; Alphabetic # Lo   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; Alphabetic # Lo  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1BC9E         ; Alphabetic # Mn       DUPLOYAN DOUBLE MARK
+1D400..1D454  ; Alphabetic # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; Alphabetic # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; Alphabetic # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; Alphabetic # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; Alphabetic # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; Alphabetic # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; Alphabetic # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; Alphabetic # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; Alphabetic # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; Alphabetic # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; Alphabetic # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; Alphabetic # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; Alphabetic # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; Alphabetic # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; Alphabetic # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; Alphabetic # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; Alphabetic # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; Alphabetic # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; Alphabetic # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; Alphabetic # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C2..1D6DA  ; Alphabetic # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6FA  ; Alphabetic # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FC..1D714  ; Alphabetic # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D734  ; Alphabetic # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D736..1D74E  ; Alphabetic # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D76E  ; Alphabetic # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D770..1D788  ; Alphabetic # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D7A8  ; Alphabetic # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7AA..1D7C2  ; Alphabetic # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7CB  ; Alphabetic # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1DF00..1DF09  ; Alphabetic # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0A         ; Alphabetic # Lo       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1DF0B..1DF1E  ; Alphabetic # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; Alphabetic # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E000..1E006  ; Alphabetic # Mn   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; Alphabetic # Mn  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; Alphabetic # Mn   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; Alphabetic # Mn   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; Alphabetic # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E030..1E06D  ; Alphabetic # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E08F         ; Alphabetic # Mn       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E100..1E12C  ; Alphabetic # Lo  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E137..1E13D  ; Alphabetic # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E14E         ; Alphabetic # Lo       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E290..1E2AD  ; Alphabetic # Lo  [30] TOTO LETTER PA..TOTO LETTER A
+1E2C0..1E2EB  ; Alphabetic # Lo  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E4D0..1E4EA  ; Alphabetic # Lo  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E4EB         ; Alphabetic # Lm       NAG MUNDARI SIGN OJOD
+1E7E0..1E7E6  ; Alphabetic # Lo   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; Alphabetic # Lo   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; Alphabetic # Lo   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; Alphabetic # Lo  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; Alphabetic # Lo [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1E900..1E943  ; Alphabetic # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1E947         ; Alphabetic # Mn       ADLAM HAMZA
+1E94B         ; Alphabetic # Lm       ADLAM NASALIZATION MARK
+1EE00..1EE03  ; Alphabetic # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; Alphabetic # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; Alphabetic # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; Alphabetic # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; Alphabetic # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; Alphabetic # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; Alphabetic # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; Alphabetic # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; Alphabetic # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; Alphabetic # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; Alphabetic # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; Alphabetic # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; Alphabetic # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; Alphabetic # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; Alphabetic # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; Alphabetic # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; Alphabetic # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; Alphabetic # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; Alphabetic # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; Alphabetic # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; Alphabetic # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; Alphabetic # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; Alphabetic # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; Alphabetic # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+1F130..1F149  ; Alphabetic # So  [26] SQUARED LATIN CAPITAL LETTER A..SQUARED LATIN CAPITAL LETTER Z
+1F150..1F169  ; Alphabetic # So  [26] NEGATIVE CIRCLED LATIN CAPITAL LETTER A..NEGATIVE CIRCLED LATIN CAPITAL LETTER Z
+1F170..1F189  ; Alphabetic # So  [26] NEGATIVE SQUARED LATIN CAPITAL LETTER A..NEGATIVE SQUARED LATIN CAPITAL LETTER Z
+20000..2A6DF  ; Alphabetic # Lo [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; Alphabetic # Lo [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; Alphabetic # Lo [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; Alphabetic # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; Alphabetic # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; Alphabetic # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; Alphabetic # Lo [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; Alphabetic # Lo [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+
+# Total code points: 137765
+
+# ================================================
+
+# Derived Property: Lowercase
+#  Generated from: Ll + Other_Lowercase
+
+0061..007A    ; Lowercase # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; Lowercase # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; Lowercase # L&       MICRO SIGN
+00BA          ; Lowercase # Lo       MASCULINE ORDINAL INDICATOR
+00DF..00F6    ; Lowercase # L&  [24] LATIN SMALL LETTER SHARP S..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..00FF    ; Lowercase # L&   [8] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER Y WITH DIAERESIS
+0101          ; Lowercase # L&       LATIN SMALL LETTER A WITH MACRON
+0103          ; Lowercase # L&       LATIN SMALL LETTER A WITH BREVE
+0105          ; Lowercase # L&       LATIN SMALL LETTER A WITH OGONEK
+0107          ; Lowercase # L&       LATIN SMALL LETTER C WITH ACUTE
+0109          ; Lowercase # L&       LATIN SMALL LETTER C WITH CIRCUMFLEX
+010B          ; Lowercase # L&       LATIN SMALL LETTER C WITH DOT ABOVE
+010D          ; Lowercase # L&       LATIN SMALL LETTER C WITH CARON
+010F          ; Lowercase # L&       LATIN SMALL LETTER D WITH CARON
+0111          ; Lowercase # L&       LATIN SMALL LETTER D WITH STROKE
+0113          ; Lowercase # L&       LATIN SMALL LETTER E WITH MACRON
+0115          ; Lowercase # L&       LATIN SMALL LETTER E WITH BREVE
+0117          ; Lowercase # L&       LATIN SMALL LETTER E WITH DOT ABOVE
+0119          ; Lowercase # L&       LATIN SMALL LETTER E WITH OGONEK
+011B          ; Lowercase # L&       LATIN SMALL LETTER E WITH CARON
+011D          ; Lowercase # L&       LATIN SMALL LETTER G WITH CIRCUMFLEX
+011F          ; Lowercase # L&       LATIN SMALL LETTER G WITH BREVE
+0121          ; Lowercase # L&       LATIN SMALL LETTER G WITH DOT ABOVE
+0123          ; Lowercase # L&       LATIN SMALL LETTER G WITH CEDILLA
+0125          ; Lowercase # L&       LATIN SMALL LETTER H WITH CIRCUMFLEX
+0127          ; Lowercase # L&       LATIN SMALL LETTER H WITH STROKE
+0129          ; Lowercase # L&       LATIN SMALL LETTER I WITH TILDE
+012B          ; Lowercase # L&       LATIN SMALL LETTER I WITH MACRON
+012D          ; Lowercase # L&       LATIN SMALL LETTER I WITH BREVE
+012F          ; Lowercase # L&       LATIN SMALL LETTER I WITH OGONEK
+0131          ; Lowercase # L&       LATIN SMALL LETTER DOTLESS I
+0133          ; Lowercase # L&       LATIN SMALL LIGATURE IJ
+0135          ; Lowercase # L&       LATIN SMALL LETTER J WITH CIRCUMFLEX
+0137..0138    ; Lowercase # L&   [2] LATIN SMALL LETTER K WITH CEDILLA..LATIN SMALL LETTER KRA
+013A          ; Lowercase # L&       LATIN SMALL LETTER L WITH ACUTE
+013C          ; Lowercase # L&       LATIN SMALL LETTER L WITH CEDILLA
+013E          ; Lowercase # L&       LATIN SMALL LETTER L WITH CARON
+0140          ; Lowercase # L&       LATIN SMALL LETTER L WITH MIDDLE DOT
+0142          ; Lowercase # L&       LATIN SMALL LETTER L WITH STROKE
+0144          ; Lowercase # L&       LATIN SMALL LETTER N WITH ACUTE
+0146          ; Lowercase # L&       LATIN SMALL LETTER N WITH CEDILLA
+0148..0149    ; Lowercase # L&   [2] LATIN SMALL LETTER N WITH CARON..LATIN SMALL LETTER N PRECEDED BY APOSTROPHE
+014B          ; Lowercase # L&       LATIN SMALL LETTER ENG
+014D          ; Lowercase # L&       LATIN SMALL LETTER O WITH MACRON
+014F          ; Lowercase # L&       LATIN SMALL LETTER O WITH BREVE
+0151          ; Lowercase # L&       LATIN SMALL LETTER O WITH DOUBLE ACUTE
+0153          ; Lowercase # L&       LATIN SMALL LIGATURE OE
+0155          ; Lowercase # L&       LATIN SMALL LETTER R WITH ACUTE
+0157          ; Lowercase # L&       LATIN SMALL LETTER R WITH CEDILLA
+0159          ; Lowercase # L&       LATIN SMALL LETTER R WITH CARON
+015B          ; Lowercase # L&       LATIN SMALL LETTER S WITH ACUTE
+015D          ; Lowercase # L&       LATIN SMALL LETTER S WITH CIRCUMFLEX
+015F          ; Lowercase # L&       LATIN SMALL LETTER S WITH CEDILLA
+0161          ; Lowercase # L&       LATIN SMALL LETTER S WITH CARON
+0163          ; Lowercase # L&       LATIN SMALL LETTER T WITH CEDILLA
+0165          ; Lowercase # L&       LATIN SMALL LETTER T WITH CARON
+0167          ; Lowercase # L&       LATIN SMALL LETTER T WITH STROKE
+0169          ; Lowercase # L&       LATIN SMALL LETTER U WITH TILDE
+016B          ; Lowercase # L&       LATIN SMALL LETTER U WITH MACRON
+016D          ; Lowercase # L&       LATIN SMALL LETTER U WITH BREVE
+016F          ; Lowercase # L&       LATIN SMALL LETTER U WITH RING ABOVE
+0171          ; Lowercase # L&       LATIN SMALL LETTER U WITH DOUBLE ACUTE
+0173          ; Lowercase # L&       LATIN SMALL LETTER U WITH OGONEK
+0175          ; Lowercase # L&       LATIN SMALL LETTER W WITH CIRCUMFLEX
+0177          ; Lowercase # L&       LATIN SMALL LETTER Y WITH CIRCUMFLEX
+017A          ; Lowercase # L&       LATIN SMALL LETTER Z WITH ACUTE
+017C          ; Lowercase # L&       LATIN SMALL LETTER Z WITH DOT ABOVE
+017E..0180    ; Lowercase # L&   [3] LATIN SMALL LETTER Z WITH CARON..LATIN SMALL LETTER B WITH STROKE
+0183          ; Lowercase # L&       LATIN SMALL LETTER B WITH TOPBAR
+0185          ; Lowercase # L&       LATIN SMALL LETTER TONE SIX
+0188          ; Lowercase # L&       LATIN SMALL LETTER C WITH HOOK
+018C..018D    ; Lowercase # L&   [2] LATIN SMALL LETTER D WITH TOPBAR..LATIN SMALL LETTER TURNED DELTA
+0192          ; Lowercase # L&       LATIN SMALL LETTER F WITH HOOK
+0195          ; Lowercase # L&       LATIN SMALL LETTER HV
+0199..019B    ; Lowercase # L&   [3] LATIN SMALL LETTER K WITH HOOK..LATIN SMALL LETTER LAMBDA WITH STROKE
+019E          ; Lowercase # L&       LATIN SMALL LETTER N WITH LONG RIGHT LEG
+01A1          ; Lowercase # L&       LATIN SMALL LETTER O WITH HORN
+01A3          ; Lowercase # L&       LATIN SMALL LETTER OI
+01A5          ; Lowercase # L&       LATIN SMALL LETTER P WITH HOOK
+01A8          ; Lowercase # L&       LATIN SMALL LETTER TONE TWO
+01AA..01AB    ; Lowercase # L&   [2] LATIN LETTER REVERSED ESH LOOP..LATIN SMALL LETTER T WITH PALATAL HOOK
+01AD          ; Lowercase # L&       LATIN SMALL LETTER T WITH HOOK
+01B0          ; Lowercase # L&       LATIN SMALL LETTER U WITH HORN
+01B4          ; Lowercase # L&       LATIN SMALL LETTER Y WITH HOOK
+01B6          ; Lowercase # L&       LATIN SMALL LETTER Z WITH STROKE
+01B9..01BA    ; Lowercase # L&   [2] LATIN SMALL LETTER EZH REVERSED..LATIN SMALL LETTER EZH WITH TAIL
+01BD..01BF    ; Lowercase # L&   [3] LATIN SMALL LETTER TONE FIVE..LATIN LETTER WYNN
+01C6          ; Lowercase # L&       LATIN SMALL LETTER DZ WITH CARON
+01C9          ; Lowercase # L&       LATIN SMALL LETTER LJ
+01CC          ; Lowercase # L&       LATIN SMALL LETTER NJ
+01CE          ; Lowercase # L&       LATIN SMALL LETTER A WITH CARON
+01D0          ; Lowercase # L&       LATIN SMALL LETTER I WITH CARON
+01D2          ; Lowercase # L&       LATIN SMALL LETTER O WITH CARON
+01D4          ; Lowercase # L&       LATIN SMALL LETTER U WITH CARON
+01D6          ; Lowercase # L&       LATIN SMALL LETTER U WITH DIAERESIS AND MACRON
+01D8          ; Lowercase # L&       LATIN SMALL LETTER U WITH DIAERESIS AND ACUTE
+01DA          ; Lowercase # L&       LATIN SMALL LETTER U WITH DIAERESIS AND CARON
+01DC..01DD    ; Lowercase # L&   [2] LATIN SMALL LETTER U WITH DIAERESIS AND GRAVE..LATIN SMALL LETTER TURNED E
+01DF          ; Lowercase # L&       LATIN SMALL LETTER A WITH DIAERESIS AND MACRON
+01E1          ; Lowercase # L&       LATIN SMALL LETTER A WITH DOT ABOVE AND MACRON
+01E3          ; Lowercase # L&       LATIN SMALL LETTER AE WITH MACRON
+01E5          ; Lowercase # L&       LATIN SMALL LETTER G WITH STROKE
+01E7          ; Lowercase # L&       LATIN SMALL LETTER G WITH CARON
+01E9          ; Lowercase # L&       LATIN SMALL LETTER K WITH CARON
+01EB          ; Lowercase # L&       LATIN SMALL LETTER O WITH OGONEK
+01ED          ; Lowercase # L&       LATIN SMALL LETTER O WITH OGONEK AND MACRON
+01EF..01F0    ; Lowercase # L&   [2] LATIN SMALL LETTER EZH WITH CARON..LATIN SMALL LETTER J WITH CARON
+01F3          ; Lowercase # L&       LATIN SMALL LETTER DZ
+01F5          ; Lowercase # L&       LATIN SMALL LETTER G WITH ACUTE
+01F9          ; Lowercase # L&       LATIN SMALL LETTER N WITH GRAVE
+01FB          ; Lowercase # L&       LATIN SMALL LETTER A WITH RING ABOVE AND ACUTE
+01FD          ; Lowercase # L&       LATIN SMALL LETTER AE WITH ACUTE
+01FF          ; Lowercase # L&       LATIN SMALL LETTER O WITH STROKE AND ACUTE
+0201          ; Lowercase # L&       LATIN SMALL LETTER A WITH DOUBLE GRAVE
+0203          ; Lowercase # L&       LATIN SMALL LETTER A WITH INVERTED BREVE
+0205          ; Lowercase # L&       LATIN SMALL LETTER E WITH DOUBLE GRAVE
+0207          ; Lowercase # L&       LATIN SMALL LETTER E WITH INVERTED BREVE
+0209          ; Lowercase # L&       LATIN SMALL LETTER I WITH DOUBLE GRAVE
+020B          ; Lowercase # L&       LATIN SMALL LETTER I WITH INVERTED BREVE
+020D          ; Lowercase # L&       LATIN SMALL LETTER O WITH DOUBLE GRAVE
+020F          ; Lowercase # L&       LATIN SMALL LETTER O WITH INVERTED BREVE
+0211          ; Lowercase # L&       LATIN SMALL LETTER R WITH DOUBLE GRAVE
+0213          ; Lowercase # L&       LATIN SMALL LETTER R WITH INVERTED BREVE
+0215          ; Lowercase # L&       LATIN SMALL LETTER U WITH DOUBLE GRAVE
+0217          ; Lowercase # L&       LATIN SMALL LETTER U WITH INVERTED BREVE
+0219          ; Lowercase # L&       LATIN SMALL LETTER S WITH COMMA BELOW
+021B          ; Lowercase # L&       LATIN SMALL LETTER T WITH COMMA BELOW
+021D          ; Lowercase # L&       LATIN SMALL LETTER YOGH
+021F          ; Lowercase # L&       LATIN SMALL LETTER H WITH CARON
+0221          ; Lowercase # L&       LATIN SMALL LETTER D WITH CURL
+0223          ; Lowercase # L&       LATIN SMALL LETTER OU
+0225          ; Lowercase # L&       LATIN SMALL LETTER Z WITH HOOK
+0227          ; Lowercase # L&       LATIN SMALL LETTER A WITH DOT ABOVE
+0229          ; Lowercase # L&       LATIN SMALL LETTER E WITH CEDILLA
+022B          ; Lowercase # L&       LATIN SMALL LETTER O WITH DIAERESIS AND MACRON
+022D          ; Lowercase # L&       LATIN SMALL LETTER O WITH TILDE AND MACRON
+022F          ; Lowercase # L&       LATIN SMALL LETTER O WITH DOT ABOVE
+0231          ; Lowercase # L&       LATIN SMALL LETTER O WITH DOT ABOVE AND MACRON
+0233..0239    ; Lowercase # L&   [7] LATIN SMALL LETTER Y WITH MACRON..LATIN SMALL LETTER QP DIGRAPH
+023C          ; Lowercase # L&       LATIN SMALL LETTER C WITH STROKE
+023F..0240    ; Lowercase # L&   [2] LATIN SMALL LETTER S WITH SWASH TAIL..LATIN SMALL LETTER Z WITH SWASH TAIL
+0242          ; Lowercase # L&       LATIN SMALL LETTER GLOTTAL STOP
+0247          ; Lowercase # L&       LATIN SMALL LETTER E WITH STROKE
+0249          ; Lowercase # L&       LATIN SMALL LETTER J WITH STROKE
+024B          ; Lowercase # L&       LATIN SMALL LETTER Q WITH HOOK TAIL
+024D          ; Lowercase # L&       LATIN SMALL LETTER R WITH STROKE
+024F..0293    ; Lowercase # L&  [69] LATIN SMALL LETTER Y WITH STROKE..LATIN SMALL LETTER EZH WITH CURL
+0295..02AF    ; Lowercase # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02B8    ; Lowercase # Lm   [9] MODIFIER LETTER SMALL H..MODIFIER LETTER SMALL Y
+02C0..02C1    ; Lowercase # Lm   [2] MODIFIER LETTER GLOTTAL STOP..MODIFIER LETTER REVERSED GLOTTAL STOP
+02E0..02E4    ; Lowercase # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+0345          ; Lowercase # Mn       COMBINING GREEK YPOGEGRAMMENI
+0371          ; Lowercase # L&       GREEK SMALL LETTER HETA
+0373          ; Lowercase # L&       GREEK SMALL LETTER ARCHAIC SAMPI
+0377          ; Lowercase # L&       GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037A          ; Lowercase # Lm       GREEK YPOGEGRAMMENI
+037B..037D    ; Lowercase # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+0390          ; Lowercase # L&       GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
+03AC..03CE    ; Lowercase # L&  [35] GREEK SMALL LETTER ALPHA WITH TONOS..GREEK SMALL LETTER OMEGA WITH TONOS
+03D0..03D1    ; Lowercase # L&   [2] GREEK BETA SYMBOL..GREEK THETA SYMBOL
+03D5..03D7    ; Lowercase # L&   [3] GREEK PHI SYMBOL..GREEK KAI SYMBOL
+03D9          ; Lowercase # L&       GREEK SMALL LETTER ARCHAIC KOPPA
+03DB          ; Lowercase # L&       GREEK SMALL LETTER STIGMA
+03DD          ; Lowercase # L&       GREEK SMALL LETTER DIGAMMA
+03DF          ; Lowercase # L&       GREEK SMALL LETTER KOPPA
+03E1          ; Lowercase # L&       GREEK SMALL LETTER SAMPI
+03E3          ; Lowercase # L&       COPTIC SMALL LETTER SHEI
+03E5          ; Lowercase # L&       COPTIC SMALL LETTER FEI
+03E7          ; Lowercase # L&       COPTIC SMALL LETTER KHEI
+03E9          ; Lowercase # L&       COPTIC SMALL LETTER HORI
+03EB          ; Lowercase # L&       COPTIC SMALL LETTER GANGIA
+03ED          ; Lowercase # L&       COPTIC SMALL LETTER SHIMA
+03EF..03F3    ; Lowercase # L&   [5] COPTIC SMALL LETTER DEI..GREEK LETTER YOT
+03F5          ; Lowercase # L&       GREEK LUNATE EPSILON SYMBOL
+03F8          ; Lowercase # L&       GREEK SMALL LETTER SHO
+03FB..03FC    ; Lowercase # L&   [2] GREEK SMALL LETTER SAN..GREEK RHO WITH STROKE SYMBOL
+0430..045F    ; Lowercase # L&  [48] CYRILLIC SMALL LETTER A..CYRILLIC SMALL LETTER DZHE
+0461          ; Lowercase # L&       CYRILLIC SMALL LETTER OMEGA
+0463          ; Lowercase # L&       CYRILLIC SMALL LETTER YAT
+0465          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTIFIED E
+0467          ; Lowercase # L&       CYRILLIC SMALL LETTER LITTLE YUS
+0469          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTIFIED LITTLE YUS
+046B          ; Lowercase # L&       CYRILLIC SMALL LETTER BIG YUS
+046D          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTIFIED BIG YUS
+046F          ; Lowercase # L&       CYRILLIC SMALL LETTER KSI
+0471          ; Lowercase # L&       CYRILLIC SMALL LETTER PSI
+0473          ; Lowercase # L&       CYRILLIC SMALL LETTER FITA
+0475          ; Lowercase # L&       CYRILLIC SMALL LETTER IZHITSA
+0477          ; Lowercase # L&       CYRILLIC SMALL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0479          ; Lowercase # L&       CYRILLIC SMALL LETTER UK
+047B          ; Lowercase # L&       CYRILLIC SMALL LETTER ROUND OMEGA
+047D          ; Lowercase # L&       CYRILLIC SMALL LETTER OMEGA WITH TITLO
+047F          ; Lowercase # L&       CYRILLIC SMALL LETTER OT
+0481          ; Lowercase # L&       CYRILLIC SMALL LETTER KOPPA
+048B          ; Lowercase # L&       CYRILLIC SMALL LETTER SHORT I WITH TAIL
+048D          ; Lowercase # L&       CYRILLIC SMALL LETTER SEMISOFT SIGN
+048F          ; Lowercase # L&       CYRILLIC SMALL LETTER ER WITH TICK
+0491          ; Lowercase # L&       CYRILLIC SMALL LETTER GHE WITH UPTURN
+0493          ; Lowercase # L&       CYRILLIC SMALL LETTER GHE WITH STROKE
+0495          ; Lowercase # L&       CYRILLIC SMALL LETTER GHE WITH MIDDLE HOOK
+0497          ; Lowercase # L&       CYRILLIC SMALL LETTER ZHE WITH DESCENDER
+0499          ; Lowercase # L&       CYRILLIC SMALL LETTER ZE WITH DESCENDER
+049B          ; Lowercase # L&       CYRILLIC SMALL LETTER KA WITH DESCENDER
+049D          ; Lowercase # L&       CYRILLIC SMALL LETTER KA WITH VERTICAL STROKE
+049F          ; Lowercase # L&       CYRILLIC SMALL LETTER KA WITH STROKE
+04A1          ; Lowercase # L&       CYRILLIC SMALL LETTER BASHKIR KA
+04A3          ; Lowercase # L&       CYRILLIC SMALL LETTER EN WITH DESCENDER
+04A5          ; Lowercase # L&       CYRILLIC SMALL LIGATURE EN GHE
+04A7          ; Lowercase # L&       CYRILLIC SMALL LETTER PE WITH MIDDLE HOOK
+04A9          ; Lowercase # L&       CYRILLIC SMALL LETTER ABKHASIAN HA
+04AB          ; Lowercase # L&       CYRILLIC SMALL LETTER ES WITH DESCENDER
+04AD          ; Lowercase # L&       CYRILLIC SMALL LETTER TE WITH DESCENDER
+04AF          ; Lowercase # L&       CYRILLIC SMALL LETTER STRAIGHT U
+04B1          ; Lowercase # L&       CYRILLIC SMALL LETTER STRAIGHT U WITH STROKE
+04B3          ; Lowercase # L&       CYRILLIC SMALL LETTER HA WITH DESCENDER
+04B5          ; Lowercase # L&       CYRILLIC SMALL LIGATURE TE TSE
+04B7          ; Lowercase # L&       CYRILLIC SMALL LETTER CHE WITH DESCENDER
+04B9          ; Lowercase # L&       CYRILLIC SMALL LETTER CHE WITH VERTICAL STROKE
+04BB          ; Lowercase # L&       CYRILLIC SMALL LETTER SHHA
+04BD          ; Lowercase # L&       CYRILLIC SMALL LETTER ABKHASIAN CHE
+04BF          ; Lowercase # L&       CYRILLIC SMALL LETTER ABKHASIAN CHE WITH DESCENDER
+04C2          ; Lowercase # L&       CYRILLIC SMALL LETTER ZHE WITH BREVE
+04C4          ; Lowercase # L&       CYRILLIC SMALL LETTER KA WITH HOOK
+04C6          ; Lowercase # L&       CYRILLIC SMALL LETTER EL WITH TAIL
+04C8          ; Lowercase # L&       CYRILLIC SMALL LETTER EN WITH HOOK
+04CA          ; Lowercase # L&       CYRILLIC SMALL LETTER EN WITH TAIL
+04CC          ; Lowercase # L&       CYRILLIC SMALL LETTER KHAKASSIAN CHE
+04CE..04CF    ; Lowercase # L&   [2] CYRILLIC SMALL LETTER EM WITH TAIL..CYRILLIC SMALL LETTER PALOCHKA
+04D1          ; Lowercase # L&       CYRILLIC SMALL LETTER A WITH BREVE
+04D3          ; Lowercase # L&       CYRILLIC SMALL LETTER A WITH DIAERESIS
+04D5          ; Lowercase # L&       CYRILLIC SMALL LIGATURE A IE
+04D7          ; Lowercase # L&       CYRILLIC SMALL LETTER IE WITH BREVE
+04D9          ; Lowercase # L&       CYRILLIC SMALL LETTER SCHWA
+04DB          ; Lowercase # L&       CYRILLIC SMALL LETTER SCHWA WITH DIAERESIS
+04DD          ; Lowercase # L&       CYRILLIC SMALL LETTER ZHE WITH DIAERESIS
+04DF          ; Lowercase # L&       CYRILLIC SMALL LETTER ZE WITH DIAERESIS
+04E1          ; Lowercase # L&       CYRILLIC SMALL LETTER ABKHASIAN DZE
+04E3          ; Lowercase # L&       CYRILLIC SMALL LETTER I WITH MACRON
+04E5          ; Lowercase # L&       CYRILLIC SMALL LETTER I WITH DIAERESIS
+04E7          ; Lowercase # L&       CYRILLIC SMALL LETTER O WITH DIAERESIS
+04E9          ; Lowercase # L&       CYRILLIC SMALL LETTER BARRED O
+04EB          ; Lowercase # L&       CYRILLIC SMALL LETTER BARRED O WITH DIAERESIS
+04ED          ; Lowercase # L&       CYRILLIC SMALL LETTER E WITH DIAERESIS
+04EF          ; Lowercase # L&       CYRILLIC SMALL LETTER U WITH MACRON
+04F1          ; Lowercase # L&       CYRILLIC SMALL LETTER U WITH DIAERESIS
+04F3          ; Lowercase # L&       CYRILLIC SMALL LETTER U WITH DOUBLE ACUTE
+04F5          ; Lowercase # L&       CYRILLIC SMALL LETTER CHE WITH DIAERESIS
+04F7          ; Lowercase # L&       CYRILLIC SMALL LETTER GHE WITH DESCENDER
+04F9          ; Lowercase # L&       CYRILLIC SMALL LETTER YERU WITH DIAERESIS
+04FB          ; Lowercase # L&       CYRILLIC SMALL LETTER GHE WITH STROKE AND HOOK
+04FD          ; Lowercase # L&       CYRILLIC SMALL LETTER HA WITH HOOK
+04FF          ; Lowercase # L&       CYRILLIC SMALL LETTER HA WITH STROKE
+0501          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI DE
+0503          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI DJE
+0505          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI ZJE
+0507          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI DZJE
+0509          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI LJE
+050B          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI NJE
+050D          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI SJE
+050F          ; Lowercase # L&       CYRILLIC SMALL LETTER KOMI TJE
+0511          ; Lowercase # L&       CYRILLIC SMALL LETTER REVERSED ZE
+0513          ; Lowercase # L&       CYRILLIC SMALL LETTER EL WITH HOOK
+0515          ; Lowercase # L&       CYRILLIC SMALL LETTER LHA
+0517          ; Lowercase # L&       CYRILLIC SMALL LETTER RHA
+0519          ; Lowercase # L&       CYRILLIC SMALL LETTER YAE
+051B          ; Lowercase # L&       CYRILLIC SMALL LETTER QA
+051D          ; Lowercase # L&       CYRILLIC SMALL LETTER WE
+051F          ; Lowercase # L&       CYRILLIC SMALL LETTER ALEUT KA
+0521          ; Lowercase # L&       CYRILLIC SMALL LETTER EL WITH MIDDLE HOOK
+0523          ; Lowercase # L&       CYRILLIC SMALL LETTER EN WITH MIDDLE HOOK
+0525          ; Lowercase # L&       CYRILLIC SMALL LETTER PE WITH DESCENDER
+0527          ; Lowercase # L&       CYRILLIC SMALL LETTER SHHA WITH DESCENDER
+0529          ; Lowercase # L&       CYRILLIC SMALL LETTER EN WITH LEFT HOOK
+052B          ; Lowercase # L&       CYRILLIC SMALL LETTER DZZHE
+052D          ; Lowercase # L&       CYRILLIC SMALL LETTER DCHE
+052F          ; Lowercase # L&       CYRILLIC SMALL LETTER EL WITH DESCENDER
+0560..0588    ; Lowercase # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+10D0..10FA    ; Lowercase # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; Lowercase # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; Lowercase # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+13F8..13FD    ; Lowercase # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Lowercase # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1D00..1D2B    ; Lowercase # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; Lowercase # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; Lowercase # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; Lowercase # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; Lowercase # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; Lowercase # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1E01          ; Lowercase # L&       LATIN SMALL LETTER A WITH RING BELOW
+1E03          ; Lowercase # L&       LATIN SMALL LETTER B WITH DOT ABOVE
+1E05          ; Lowercase # L&       LATIN SMALL LETTER B WITH DOT BELOW
+1E07          ; Lowercase # L&       LATIN SMALL LETTER B WITH LINE BELOW
+1E09          ; Lowercase # L&       LATIN SMALL LETTER C WITH CEDILLA AND ACUTE
+1E0B          ; Lowercase # L&       LATIN SMALL LETTER D WITH DOT ABOVE
+1E0D          ; Lowercase # L&       LATIN SMALL LETTER D WITH DOT BELOW
+1E0F          ; Lowercase # L&       LATIN SMALL LETTER D WITH LINE BELOW
+1E11          ; Lowercase # L&       LATIN SMALL LETTER D WITH CEDILLA
+1E13          ; Lowercase # L&       LATIN SMALL LETTER D WITH CIRCUMFLEX BELOW
+1E15          ; Lowercase # L&       LATIN SMALL LETTER E WITH MACRON AND GRAVE
+1E17          ; Lowercase # L&       LATIN SMALL LETTER E WITH MACRON AND ACUTE
+1E19          ; Lowercase # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX BELOW
+1E1B          ; Lowercase # L&       LATIN SMALL LETTER E WITH TILDE BELOW
+1E1D          ; Lowercase # L&       LATIN SMALL LETTER E WITH CEDILLA AND BREVE
+1E1F          ; Lowercase # L&       LATIN SMALL LETTER F WITH DOT ABOVE
+1E21          ; Lowercase # L&       LATIN SMALL LETTER G WITH MACRON
+1E23          ; Lowercase # L&       LATIN SMALL LETTER H WITH DOT ABOVE
+1E25          ; Lowercase # L&       LATIN SMALL LETTER H WITH DOT BELOW
+1E27          ; Lowercase # L&       LATIN SMALL LETTER H WITH DIAERESIS
+1E29          ; Lowercase # L&       LATIN SMALL LETTER H WITH CEDILLA
+1E2B          ; Lowercase # L&       LATIN SMALL LETTER H WITH BREVE BELOW
+1E2D          ; Lowercase # L&       LATIN SMALL LETTER I WITH TILDE BELOW
+1E2F          ; Lowercase # L&       LATIN SMALL LETTER I WITH DIAERESIS AND ACUTE
+1E31          ; Lowercase # L&       LATIN SMALL LETTER K WITH ACUTE
+1E33          ; Lowercase # L&       LATIN SMALL LETTER K WITH DOT BELOW
+1E35          ; Lowercase # L&       LATIN SMALL LETTER K WITH LINE BELOW
+1E37          ; Lowercase # L&       LATIN SMALL LETTER L WITH DOT BELOW
+1E39          ; Lowercase # L&       LATIN SMALL LETTER L WITH DOT BELOW AND MACRON
+1E3B          ; Lowercase # L&       LATIN SMALL LETTER L WITH LINE BELOW
+1E3D          ; Lowercase # L&       LATIN SMALL LETTER L WITH CIRCUMFLEX BELOW
+1E3F          ; Lowercase # L&       LATIN SMALL LETTER M WITH ACUTE
+1E41          ; Lowercase # L&       LATIN SMALL LETTER M WITH DOT ABOVE
+1E43          ; Lowercase # L&       LATIN SMALL LETTER M WITH DOT BELOW
+1E45          ; Lowercase # L&       LATIN SMALL LETTER N WITH DOT ABOVE
+1E47          ; Lowercase # L&       LATIN SMALL LETTER N WITH DOT BELOW
+1E49          ; Lowercase # L&       LATIN SMALL LETTER N WITH LINE BELOW
+1E4B          ; Lowercase # L&       LATIN SMALL LETTER N WITH CIRCUMFLEX BELOW
+1E4D          ; Lowercase # L&       LATIN SMALL LETTER O WITH TILDE AND ACUTE
+1E4F          ; Lowercase # L&       LATIN SMALL LETTER O WITH TILDE AND DIAERESIS
+1E51          ; Lowercase # L&       LATIN SMALL LETTER O WITH MACRON AND GRAVE
+1E53          ; Lowercase # L&       LATIN SMALL LETTER O WITH MACRON AND ACUTE
+1E55          ; Lowercase # L&       LATIN SMALL LETTER P WITH ACUTE
+1E57          ; Lowercase # L&       LATIN SMALL LETTER P WITH DOT ABOVE
+1E59          ; Lowercase # L&       LATIN SMALL LETTER R WITH DOT ABOVE
+1E5B          ; Lowercase # L&       LATIN SMALL LETTER R WITH DOT BELOW
+1E5D          ; Lowercase # L&       LATIN SMALL LETTER R WITH DOT BELOW AND MACRON
+1E5F          ; Lowercase # L&       LATIN SMALL LETTER R WITH LINE BELOW
+1E61          ; Lowercase # L&       LATIN SMALL LETTER S WITH DOT ABOVE
+1E63          ; Lowercase # L&       LATIN SMALL LETTER S WITH DOT BELOW
+1E65          ; Lowercase # L&       LATIN SMALL LETTER S WITH ACUTE AND DOT ABOVE
+1E67          ; Lowercase # L&       LATIN SMALL LETTER S WITH CARON AND DOT ABOVE
+1E69          ; Lowercase # L&       LATIN SMALL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6B          ; Lowercase # L&       LATIN SMALL LETTER T WITH DOT ABOVE
+1E6D          ; Lowercase # L&       LATIN SMALL LETTER T WITH DOT BELOW
+1E6F          ; Lowercase # L&       LATIN SMALL LETTER T WITH LINE BELOW
+1E71          ; Lowercase # L&       LATIN SMALL LETTER T WITH CIRCUMFLEX BELOW
+1E73          ; Lowercase # L&       LATIN SMALL LETTER U WITH DIAERESIS BELOW
+1E75          ; Lowercase # L&       LATIN SMALL LETTER U WITH TILDE BELOW
+1E77          ; Lowercase # L&       LATIN SMALL LETTER U WITH CIRCUMFLEX BELOW
+1E79          ; Lowercase # L&       LATIN SMALL LETTER U WITH TILDE AND ACUTE
+1E7B          ; Lowercase # L&       LATIN SMALL LETTER U WITH MACRON AND DIAERESIS
+1E7D          ; Lowercase # L&       LATIN SMALL LETTER V WITH TILDE
+1E7F          ; Lowercase # L&       LATIN SMALL LETTER V WITH DOT BELOW
+1E81          ; Lowercase # L&       LATIN SMALL LETTER W WITH GRAVE
+1E83          ; Lowercase # L&       LATIN SMALL LETTER W WITH ACUTE
+1E85          ; Lowercase # L&       LATIN SMALL LETTER W WITH DIAERESIS
+1E87          ; Lowercase # L&       LATIN SMALL LETTER W WITH DOT ABOVE
+1E89          ; Lowercase # L&       LATIN SMALL LETTER W WITH DOT BELOW
+1E8B          ; Lowercase # L&       LATIN SMALL LETTER X WITH DOT ABOVE
+1E8D          ; Lowercase # L&       LATIN SMALL LETTER X WITH DIAERESIS
+1E8F          ; Lowercase # L&       LATIN SMALL LETTER Y WITH DOT ABOVE
+1E91          ; Lowercase # L&       LATIN SMALL LETTER Z WITH CIRCUMFLEX
+1E93          ; Lowercase # L&       LATIN SMALL LETTER Z WITH DOT BELOW
+1E95..1E9D    ; Lowercase # L&   [9] LATIN SMALL LETTER Z WITH LINE BELOW..LATIN SMALL LETTER LONG S WITH HIGH STROKE
+1E9F          ; Lowercase # L&       LATIN SMALL LETTER DELTA
+1EA1          ; Lowercase # L&       LATIN SMALL LETTER A WITH DOT BELOW
+1EA3          ; Lowercase # L&       LATIN SMALL LETTER A WITH HOOK ABOVE
+1EA5          ; Lowercase # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA7          ; Lowercase # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA9          ; Lowercase # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAB          ; Lowercase # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAD          ; Lowercase # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAF          ; Lowercase # L&       LATIN SMALL LETTER A WITH BREVE AND ACUTE
+1EB1          ; Lowercase # L&       LATIN SMALL LETTER A WITH BREVE AND GRAVE
+1EB3          ; Lowercase # L&       LATIN SMALL LETTER A WITH BREVE AND HOOK ABOVE
+1EB5          ; Lowercase # L&       LATIN SMALL LETTER A WITH BREVE AND TILDE
+1EB7          ; Lowercase # L&       LATIN SMALL LETTER A WITH BREVE AND DOT BELOW
+1EB9          ; Lowercase # L&       LATIN SMALL LETTER E WITH DOT BELOW
+1EBB          ; Lowercase # L&       LATIN SMALL LETTER E WITH HOOK ABOVE
+1EBD          ; Lowercase # L&       LATIN SMALL LETTER E WITH TILDE
+1EBF          ; Lowercase # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC1          ; Lowercase # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC3          ; Lowercase # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC5          ; Lowercase # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC7          ; Lowercase # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC9          ; Lowercase # L&       LATIN SMALL LETTER I WITH HOOK ABOVE
+1ECB          ; Lowercase # L&       LATIN SMALL LETTER I WITH DOT BELOW
+1ECD          ; Lowercase # L&       LATIN SMALL LETTER O WITH DOT BELOW
+1ECF          ; Lowercase # L&       LATIN SMALL LETTER O WITH HOOK ABOVE
+1ED1          ; Lowercase # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED3          ; Lowercase # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED5          ; Lowercase # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED7          ; Lowercase # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED9          ; Lowercase # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDB          ; Lowercase # L&       LATIN SMALL LETTER O WITH HORN AND ACUTE
+1EDD          ; Lowercase # L&       LATIN SMALL LETTER O WITH HORN AND GRAVE
+1EDF          ; Lowercase # L&       LATIN SMALL LETTER O WITH HORN AND HOOK ABOVE
+1EE1          ; Lowercase # L&       LATIN SMALL LETTER O WITH HORN AND TILDE
+1EE3          ; Lowercase # L&       LATIN SMALL LETTER O WITH HORN AND DOT BELOW
+1EE5          ; Lowercase # L&       LATIN SMALL LETTER U WITH DOT BELOW
+1EE7          ; Lowercase # L&       LATIN SMALL LETTER U WITH HOOK ABOVE
+1EE9          ; Lowercase # L&       LATIN SMALL LETTER U WITH HORN AND ACUTE
+1EEB          ; Lowercase # L&       LATIN SMALL LETTER U WITH HORN AND GRAVE
+1EED          ; Lowercase # L&       LATIN SMALL LETTER U WITH HORN AND HOOK ABOVE
+1EEF          ; Lowercase # L&       LATIN SMALL LETTER U WITH HORN AND TILDE
+1EF1          ; Lowercase # L&       LATIN SMALL LETTER U WITH HORN AND DOT BELOW
+1EF3          ; Lowercase # L&       LATIN SMALL LETTER Y WITH GRAVE
+1EF5          ; Lowercase # L&       LATIN SMALL LETTER Y WITH DOT BELOW
+1EF7          ; Lowercase # L&       LATIN SMALL LETTER Y WITH HOOK ABOVE
+1EF9          ; Lowercase # L&       LATIN SMALL LETTER Y WITH TILDE
+1EFB          ; Lowercase # L&       LATIN SMALL LETTER MIDDLE-WELSH LL
+1EFD          ; Lowercase # L&       LATIN SMALL LETTER MIDDLE-WELSH V
+1EFF..1F07    ; Lowercase # L&   [9] LATIN SMALL LETTER Y WITH LOOP..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F10..1F15    ; Lowercase # L&   [6] GREEK SMALL LETTER EPSILON WITH PSILI..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F27    ; Lowercase # L&   [8] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI
+1F30..1F37    ; Lowercase # L&   [8] GREEK SMALL LETTER IOTA WITH PSILI..GREEK SMALL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F40..1F45    ; Lowercase # L&   [6] GREEK SMALL LETTER OMICRON WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Lowercase # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F60..1F67    ; Lowercase # L&   [8] GREEK SMALL LETTER OMEGA WITH PSILI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1F70..1F7D    ; Lowercase # L&  [14] GREEK SMALL LETTER ALPHA WITH VARIA..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1F87    ; Lowercase # L&   [8] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1F90..1F97    ; Lowercase # L&   [8] GREEK SMALL LETTER ETA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1FA0..1FA7    ; Lowercase # L&   [8] GREEK SMALL LETTER OMEGA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1FB0..1FB4    ; Lowercase # L&   [5] GREEK SMALL LETTER ALPHA WITH VRACHY..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FB7    ; Lowercase # L&   [2] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK SMALL LETTER ALPHA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FBE          ; Lowercase # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Lowercase # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FC7    ; Lowercase # L&   [2] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK SMALL LETTER ETA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FD0..1FD3    ; Lowercase # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FD7    ; Lowercase # L&   [2] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND PERISPOMENI
+1FE0..1FE7    ; Lowercase # L&   [8] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND PERISPOMENI
+1FF2..1FF4    ; Lowercase # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FF7    ; Lowercase # L&   [2] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENI
+2071          ; Lowercase # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; Lowercase # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; Lowercase # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+210A          ; Lowercase # L&       SCRIPT SMALL G
+210E..210F    ; Lowercase # L&   [2] PLANCK CONSTANT..PLANCK CONSTANT OVER TWO PI
+2113          ; Lowercase # L&       SCRIPT SMALL L
+212F          ; Lowercase # L&       SCRIPT SMALL E
+2134          ; Lowercase # L&       SCRIPT SMALL O
+2139          ; Lowercase # L&       INFORMATION SOURCE
+213C..213D    ; Lowercase # L&   [2] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK SMALL GAMMA
+2146..2149    ; Lowercase # L&   [4] DOUBLE-STRUCK ITALIC SMALL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; Lowercase # L&       TURNED SMALL F
+2170..217F    ; Lowercase # Nl  [16] SMALL ROMAN NUMERAL ONE..SMALL ROMAN NUMERAL ONE THOUSAND
+2184          ; Lowercase # L&       LATIN SMALL LETTER REVERSED C
+24D0..24E9    ; Lowercase # So  [26] CIRCLED LATIN SMALL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2C30..2C5F    ; Lowercase # L&  [48] GLAGOLITIC SMALL LETTER AZU..GLAGOLITIC SMALL LETTER CAUDATE CHRIVI
+2C61          ; Lowercase # L&       LATIN SMALL LETTER L WITH DOUBLE BAR
+2C65..2C66    ; Lowercase # L&   [2] LATIN SMALL LETTER A WITH STROKE..LATIN SMALL LETTER T WITH DIAGONAL STROKE
+2C68          ; Lowercase # L&       LATIN SMALL LETTER H WITH DESCENDER
+2C6A          ; Lowercase # L&       LATIN SMALL LETTER K WITH DESCENDER
+2C6C          ; Lowercase # L&       LATIN SMALL LETTER Z WITH DESCENDER
+2C71          ; Lowercase # L&       LATIN SMALL LETTER V WITH RIGHT HOOK
+2C73..2C74    ; Lowercase # L&   [2] LATIN SMALL LETTER W WITH HOOK..LATIN SMALL LETTER V WITH CURL
+2C76..2C7B    ; Lowercase # L&   [6] LATIN SMALL LETTER HALF H..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; Lowercase # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C81          ; Lowercase # L&       COPTIC SMALL LETTER ALFA
+2C83          ; Lowercase # L&       COPTIC SMALL LETTER VIDA
+2C85          ; Lowercase # L&       COPTIC SMALL LETTER GAMMA
+2C87          ; Lowercase # L&       COPTIC SMALL LETTER DALDA
+2C89          ; Lowercase # L&       COPTIC SMALL LETTER EIE
+2C8B          ; Lowercase # L&       COPTIC SMALL LETTER SOU
+2C8D          ; Lowercase # L&       COPTIC SMALL LETTER ZATA
+2C8F          ; Lowercase # L&       COPTIC SMALL LETTER HATE
+2C91          ; Lowercase # L&       COPTIC SMALL LETTER THETHE
+2C93          ; Lowercase # L&       COPTIC SMALL LETTER IAUDA
+2C95          ; Lowercase # L&       COPTIC SMALL LETTER KAPA
+2C97          ; Lowercase # L&       COPTIC SMALL LETTER LAULA
+2C99          ; Lowercase # L&       COPTIC SMALL LETTER MI
+2C9B          ; Lowercase # L&       COPTIC SMALL LETTER NI
+2C9D          ; Lowercase # L&       COPTIC SMALL LETTER KSI
+2C9F          ; Lowercase # L&       COPTIC SMALL LETTER O
+2CA1          ; Lowercase # L&       COPTIC SMALL LETTER PI
+2CA3          ; Lowercase # L&       COPTIC SMALL LETTER RO
+2CA5          ; Lowercase # L&       COPTIC SMALL LETTER SIMA
+2CA7          ; Lowercase # L&       COPTIC SMALL LETTER TAU
+2CA9          ; Lowercase # L&       COPTIC SMALL LETTER UA
+2CAB          ; Lowercase # L&       COPTIC SMALL LETTER FI
+2CAD          ; Lowercase # L&       COPTIC SMALL LETTER KHI
+2CAF          ; Lowercase # L&       COPTIC SMALL LETTER PSI
+2CB1          ; Lowercase # L&       COPTIC SMALL LETTER OOU
+2CB3          ; Lowercase # L&       COPTIC SMALL LETTER DIALECT-P ALEF
+2CB5          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC AIN
+2CB7          ; Lowercase # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC EIE
+2CB9          ; Lowercase # L&       COPTIC SMALL LETTER DIALECT-P KAPA
+2CBB          ; Lowercase # L&       COPTIC SMALL LETTER DIALECT-P NI
+2CBD          ; Lowercase # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC NI
+2CBF          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC OOU
+2CC1          ; Lowercase # L&       COPTIC SMALL LETTER SAMPI
+2CC3          ; Lowercase # L&       COPTIC SMALL LETTER CROSSED SHEI
+2CC5          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC SHEI
+2CC7          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC ESH
+2CC9          ; Lowercase # L&       COPTIC SMALL LETTER AKHMIMIC KHEI
+2CCB          ; Lowercase # L&       COPTIC SMALL LETTER DIALECT-P HORI
+2CCD          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC HORI
+2CCF          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC HA
+2CD1          ; Lowercase # L&       COPTIC SMALL LETTER L-SHAPED HA
+2CD3          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC HEI
+2CD5          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC HAT
+2CD7          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC GANGIA
+2CD9          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC DJA
+2CDB          ; Lowercase # L&       COPTIC SMALL LETTER OLD COPTIC SHIMA
+2CDD          ; Lowercase # L&       COPTIC SMALL LETTER OLD NUBIAN SHIMA
+2CDF          ; Lowercase # L&       COPTIC SMALL LETTER OLD NUBIAN NGI
+2CE1          ; Lowercase # L&       COPTIC SMALL LETTER OLD NUBIAN NYI
+2CE3..2CE4    ; Lowercase # L&   [2] COPTIC SMALL LETTER OLD NUBIAN WAU..COPTIC SYMBOL KAI
+2CEC          ; Lowercase # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC SHEI
+2CEE          ; Lowercase # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF3          ; Lowercase # L&       COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Lowercase # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Lowercase # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Lowercase # L&       GEORGIAN SMALL LETTER AEN
+A641          ; Lowercase # L&       CYRILLIC SMALL LETTER ZEMLYA
+A643          ; Lowercase # L&       CYRILLIC SMALL LETTER DZELO
+A645          ; Lowercase # L&       CYRILLIC SMALL LETTER REVERSED DZE
+A647          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTA
+A649          ; Lowercase # L&       CYRILLIC SMALL LETTER DJERV
+A64B          ; Lowercase # L&       CYRILLIC SMALL LETTER MONOGRAPH UK
+A64D          ; Lowercase # L&       CYRILLIC SMALL LETTER BROAD OMEGA
+A64F          ; Lowercase # L&       CYRILLIC SMALL LETTER NEUTRAL YER
+A651          ; Lowercase # L&       CYRILLIC SMALL LETTER YERU WITH BACK YER
+A653          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTIFIED YAT
+A655          ; Lowercase # L&       CYRILLIC SMALL LETTER REVERSED YU
+A657          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTIFIED A
+A659          ; Lowercase # L&       CYRILLIC SMALL LETTER CLOSED LITTLE YUS
+A65B          ; Lowercase # L&       CYRILLIC SMALL LETTER BLENDED YUS
+A65D          ; Lowercase # L&       CYRILLIC SMALL LETTER IOTIFIED CLOSED LITTLE YUS
+A65F          ; Lowercase # L&       CYRILLIC SMALL LETTER YN
+A661          ; Lowercase # L&       CYRILLIC SMALL LETTER REVERSED TSE
+A663          ; Lowercase # L&       CYRILLIC SMALL LETTER SOFT DE
+A665          ; Lowercase # L&       CYRILLIC SMALL LETTER SOFT EL
+A667          ; Lowercase # L&       CYRILLIC SMALL LETTER SOFT EM
+A669          ; Lowercase # L&       CYRILLIC SMALL LETTER MONOCULAR O
+A66B          ; Lowercase # L&       CYRILLIC SMALL LETTER BINOCULAR O
+A66D          ; Lowercase # L&       CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A681          ; Lowercase # L&       CYRILLIC SMALL LETTER DWE
+A683          ; Lowercase # L&       CYRILLIC SMALL LETTER DZWE
+A685          ; Lowercase # L&       CYRILLIC SMALL LETTER ZHWE
+A687          ; Lowercase # L&       CYRILLIC SMALL LETTER CCHE
+A689          ; Lowercase # L&       CYRILLIC SMALL LETTER DZZE
+A68B          ; Lowercase # L&       CYRILLIC SMALL LETTER TE WITH MIDDLE HOOK
+A68D          ; Lowercase # L&       CYRILLIC SMALL LETTER TWE
+A68F          ; Lowercase # L&       CYRILLIC SMALL LETTER TSWE
+A691          ; Lowercase # L&       CYRILLIC SMALL LETTER TSSE
+A693          ; Lowercase # L&       CYRILLIC SMALL LETTER TCHE
+A695          ; Lowercase # L&       CYRILLIC SMALL LETTER HWE
+A697          ; Lowercase # L&       CYRILLIC SMALL LETTER SHWE
+A699          ; Lowercase # L&       CYRILLIC SMALL LETTER DOUBLE O
+A69B          ; Lowercase # L&       CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; Lowercase # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A723          ; Lowercase # L&       LATIN SMALL LETTER EGYPTOLOGICAL ALEF
+A725          ; Lowercase # L&       LATIN SMALL LETTER EGYPTOLOGICAL AIN
+A727          ; Lowercase # L&       LATIN SMALL LETTER HENG
+A729          ; Lowercase # L&       LATIN SMALL LETTER TZ
+A72B          ; Lowercase # L&       LATIN SMALL LETTER TRESILLO
+A72D          ; Lowercase # L&       LATIN SMALL LETTER CUATRILLO
+A72F..A731    ; Lowercase # L&   [3] LATIN SMALL LETTER CUATRILLO WITH COMMA..LATIN LETTER SMALL CAPITAL S
+A733          ; Lowercase # L&       LATIN SMALL LETTER AA
+A735          ; Lowercase # L&       LATIN SMALL LETTER AO
+A737          ; Lowercase # L&       LATIN SMALL LETTER AU
+A739          ; Lowercase # L&       LATIN SMALL LETTER AV
+A73B          ; Lowercase # L&       LATIN SMALL LETTER AV WITH HORIZONTAL BAR
+A73D          ; Lowercase # L&       LATIN SMALL LETTER AY
+A73F          ; Lowercase # L&       LATIN SMALL LETTER REVERSED C WITH DOT
+A741          ; Lowercase # L&       LATIN SMALL LETTER K WITH STROKE
+A743          ; Lowercase # L&       LATIN SMALL LETTER K WITH DIAGONAL STROKE
+A745          ; Lowercase # L&       LATIN SMALL LETTER K WITH STROKE AND DIAGONAL STROKE
+A747          ; Lowercase # L&       LATIN SMALL LETTER BROKEN L
+A749          ; Lowercase # L&       LATIN SMALL LETTER L WITH HIGH STROKE
+A74B          ; Lowercase # L&       LATIN SMALL LETTER O WITH LONG STROKE OVERLAY
+A74D          ; Lowercase # L&       LATIN SMALL LETTER O WITH LOOP
+A74F          ; Lowercase # L&       LATIN SMALL LETTER OO
+A751          ; Lowercase # L&       LATIN SMALL LETTER P WITH STROKE THROUGH DESCENDER
+A753          ; Lowercase # L&       LATIN SMALL LETTER P WITH FLOURISH
+A755          ; Lowercase # L&       LATIN SMALL LETTER P WITH SQUIRREL TAIL
+A757          ; Lowercase # L&       LATIN SMALL LETTER Q WITH STROKE THROUGH DESCENDER
+A759          ; Lowercase # L&       LATIN SMALL LETTER Q WITH DIAGONAL STROKE
+A75B          ; Lowercase # L&       LATIN SMALL LETTER R ROTUNDA
+A75D          ; Lowercase # L&       LATIN SMALL LETTER RUM ROTUNDA
+A75F          ; Lowercase # L&       LATIN SMALL LETTER V WITH DIAGONAL STROKE
+A761          ; Lowercase # L&       LATIN SMALL LETTER VY
+A763          ; Lowercase # L&       LATIN SMALL LETTER VISIGOTHIC Z
+A765          ; Lowercase # L&       LATIN SMALL LETTER THORN WITH STROKE
+A767          ; Lowercase # L&       LATIN SMALL LETTER THORN WITH STROKE THROUGH DESCENDER
+A769          ; Lowercase # L&       LATIN SMALL LETTER VEND
+A76B          ; Lowercase # L&       LATIN SMALL LETTER ET
+A76D          ; Lowercase # L&       LATIN SMALL LETTER IS
+A76F          ; Lowercase # L&       LATIN SMALL LETTER CON
+A770          ; Lowercase # Lm       MODIFIER LETTER US
+A771..A778    ; Lowercase # L&   [8] LATIN SMALL LETTER DUM..LATIN SMALL LETTER UM
+A77A          ; Lowercase # L&       LATIN SMALL LETTER INSULAR D
+A77C          ; Lowercase # L&       LATIN SMALL LETTER INSULAR F
+A77F          ; Lowercase # L&       LATIN SMALL LETTER TURNED INSULAR G
+A781          ; Lowercase # L&       LATIN SMALL LETTER TURNED L
+A783          ; Lowercase # L&       LATIN SMALL LETTER INSULAR R
+A785          ; Lowercase # L&       LATIN SMALL LETTER INSULAR S
+A787          ; Lowercase # L&       LATIN SMALL LETTER INSULAR T
+A78C          ; Lowercase # L&       LATIN SMALL LETTER SALTILLO
+A78E          ; Lowercase # L&       LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A791          ; Lowercase # L&       LATIN SMALL LETTER N WITH DESCENDER
+A793..A795    ; Lowercase # L&   [3] LATIN SMALL LETTER C WITH BAR..LATIN SMALL LETTER H WITH PALATAL HOOK
+A797          ; Lowercase # L&       LATIN SMALL LETTER B WITH FLOURISH
+A799          ; Lowercase # L&       LATIN SMALL LETTER F WITH STROKE
+A79B          ; Lowercase # L&       LATIN SMALL LETTER VOLAPUK AE
+A79D          ; Lowercase # L&       LATIN SMALL LETTER VOLAPUK OE
+A79F          ; Lowercase # L&       LATIN SMALL LETTER VOLAPUK UE
+A7A1          ; Lowercase # L&       LATIN SMALL LETTER G WITH OBLIQUE STROKE
+A7A3          ; Lowercase # L&       LATIN SMALL LETTER K WITH OBLIQUE STROKE
+A7A5          ; Lowercase # L&       LATIN SMALL LETTER N WITH OBLIQUE STROKE
+A7A7          ; Lowercase # L&       LATIN SMALL LETTER R WITH OBLIQUE STROKE
+A7A9          ; Lowercase # L&       LATIN SMALL LETTER S WITH OBLIQUE STROKE
+A7AF          ; Lowercase # L&       LATIN LETTER SMALL CAPITAL Q
+A7B5          ; Lowercase # L&       LATIN SMALL LETTER BETA
+A7B7          ; Lowercase # L&       LATIN SMALL LETTER OMEGA
+A7B9          ; Lowercase # L&       LATIN SMALL LETTER U WITH STROKE
+A7BB          ; Lowercase # L&       LATIN SMALL LETTER GLOTTAL A
+A7BD          ; Lowercase # L&       LATIN SMALL LETTER GLOTTAL I
+A7BF          ; Lowercase # L&       LATIN SMALL LETTER GLOTTAL U
+A7C1          ; Lowercase # L&       LATIN SMALL LETTER OLD POLISH O
+A7C3          ; Lowercase # L&       LATIN SMALL LETTER ANGLICANA W
+A7C8          ; Lowercase # L&       LATIN SMALL LETTER D WITH SHORT STROKE OVERLAY
+A7CA          ; Lowercase # L&       LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D1          ; Lowercase # L&       LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; Lowercase # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5          ; Lowercase # L&       LATIN SMALL LETTER DOUBLE WYNN
+A7D7          ; Lowercase # L&       LATIN SMALL LETTER MIDDLE SCOTS S
+A7D9          ; Lowercase # L&       LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; Lowercase # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F6          ; Lowercase # L&       LATIN SMALL LETTER REVERSED HALF H
+A7F8..A7F9    ; Lowercase # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; Lowercase # L&       LATIN LETTER SMALL CAPITAL TURNED M
+AB30..AB5A    ; Lowercase # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; Lowercase # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; Lowercase # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; Lowercase # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; Lowercase # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Lowercase # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Lowercase # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF41..FF5A    ; Lowercase # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+10428..1044F  ; Lowercase # L&  [40] DESERET SMALL LETTER LONG I..DESERET SMALL LETTER EW
+104D8..104FB  ; Lowercase # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10597..105A1  ; Lowercase # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Lowercase # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Lowercase # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Lowercase # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10780         ; Lowercase # Lm       MODIFIER LETTER SMALL CAPITAL AA
+10783..10785  ; Lowercase # Lm   [3] MODIFIER LETTER SMALL AE..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; Lowercase # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; Lowercase # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10CC0..10CF2  ; Lowercase # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+118C0..118DF  ; Lowercase # L&  [32] WARANG CITI SMALL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+16E60..16E7F  ; Lowercase # L&  [32] MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+1D41A..1D433  ; Lowercase # L&  [26] MATHEMATICAL BOLD SMALL A..MATHEMATICAL BOLD SMALL Z
+1D44E..1D454  ; Lowercase # L&   [7] MATHEMATICAL ITALIC SMALL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D467  ; Lowercase # L&  [18] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL ITALIC SMALL Z
+1D482..1D49B  ; Lowercase # L&  [26] MATHEMATICAL BOLD ITALIC SMALL A..MATHEMATICAL BOLD ITALIC SMALL Z
+1D4B6..1D4B9  ; Lowercase # L&   [4] MATHEMATICAL SCRIPT SMALL A..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; Lowercase # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; Lowercase # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D4CF  ; Lowercase # L&  [11] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL SCRIPT SMALL Z
+1D4EA..1D503  ; Lowercase # L&  [26] MATHEMATICAL BOLD SCRIPT SMALL A..MATHEMATICAL BOLD SCRIPT SMALL Z
+1D51E..1D537  ; Lowercase # L&  [26] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL FRAKTUR SMALL Z
+1D552..1D56B  ; Lowercase # L&  [26] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL DOUBLE-STRUCK SMALL Z
+1D586..1D59F  ; Lowercase # L&  [26] MATHEMATICAL BOLD FRAKTUR SMALL A..MATHEMATICAL BOLD FRAKTUR SMALL Z
+1D5BA..1D5D3  ; Lowercase # L&  [26] MATHEMATICAL SANS-SERIF SMALL A..MATHEMATICAL SANS-SERIF SMALL Z
+1D5EE..1D607  ; Lowercase # L&  [26] MATHEMATICAL SANS-SERIF BOLD SMALL A..MATHEMATICAL SANS-SERIF BOLD SMALL Z
+1D622..1D63B  ; Lowercase # L&  [26] MATHEMATICAL SANS-SERIF ITALIC SMALL A..MATHEMATICAL SANS-SERIF ITALIC SMALL Z
+1D656..1D66F  ; Lowercase # L&  [26] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL A..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL Z
+1D68A..1D6A5  ; Lowercase # L&  [28] MATHEMATICAL MONOSPACE SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6C2..1D6DA  ; Lowercase # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6E1  ; Lowercase # L&   [6] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL BOLD PI SYMBOL
+1D6FC..1D714  ; Lowercase # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D71B  ; Lowercase # L&   [6] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL ITALIC PI SYMBOL
+1D736..1D74E  ; Lowercase # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D755  ; Lowercase # L&   [6] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC PI SYMBOL
+1D770..1D788  ; Lowercase # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D78F  ; Lowercase # L&   [6] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD PI SYMBOL
+1D7AA..1D7C2  ; Lowercase # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7C9  ; Lowercase # L&   [6] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC PI SYMBOL
+1D7CB         ; Lowercase # L&       MATHEMATICAL BOLD SMALL DIGAMMA
+1DF00..1DF09  ; Lowercase # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0B..1DF1E  ; Lowercase # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; Lowercase # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E030..1E06D  ; Lowercase # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E922..1E943  ; Lowercase # L&  [34] ADLAM SMALL LETTER ALIF..ADLAM SMALL LETTER SHA
+
+# Total code points: 2544
+
+# ================================================
+
+# Derived Property: Uppercase
+#  Generated from: Lu + Other_Uppercase
+
+0041..005A    ; Uppercase # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+00C0..00D6    ; Uppercase # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00DE    ; Uppercase # L&   [7] LATIN CAPITAL LETTER O WITH STROKE..LATIN CAPITAL LETTER THORN
+0100          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH MACRON
+0102          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH BREVE
+0104          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH OGONEK
+0106          ; Uppercase # L&       LATIN CAPITAL LETTER C WITH ACUTE
+0108          ; Uppercase # L&       LATIN CAPITAL LETTER C WITH CIRCUMFLEX
+010A          ; Uppercase # L&       LATIN CAPITAL LETTER C WITH DOT ABOVE
+010C          ; Uppercase # L&       LATIN CAPITAL LETTER C WITH CARON
+010E          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH CARON
+0110          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH STROKE
+0112          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH MACRON
+0114          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH BREVE
+0116          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH DOT ABOVE
+0118          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH OGONEK
+011A          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CARON
+011C          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH CIRCUMFLEX
+011E          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH BREVE
+0120          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH DOT ABOVE
+0122          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH CEDILLA
+0124          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH CIRCUMFLEX
+0126          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH STROKE
+0128          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH TILDE
+012A          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH MACRON
+012C          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH BREVE
+012E          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH OGONEK
+0130          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH DOT ABOVE
+0132          ; Uppercase # L&       LATIN CAPITAL LIGATURE IJ
+0134          ; Uppercase # L&       LATIN CAPITAL LETTER J WITH CIRCUMFLEX
+0136          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH CEDILLA
+0139          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH ACUTE
+013B          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH CEDILLA
+013D          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH CARON
+013F          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH MIDDLE DOT
+0141          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH STROKE
+0143          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH ACUTE
+0145          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH CEDILLA
+0147          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH CARON
+014A          ; Uppercase # L&       LATIN CAPITAL LETTER ENG
+014C          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH MACRON
+014E          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH BREVE
+0150          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
+0152          ; Uppercase # L&       LATIN CAPITAL LIGATURE OE
+0154          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH ACUTE
+0156          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH CEDILLA
+0158          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH CARON
+015A          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH ACUTE
+015C          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH CIRCUMFLEX
+015E          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH CEDILLA
+0160          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH CARON
+0162          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH CEDILLA
+0164          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH CARON
+0166          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH STROKE
+0168          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH TILDE
+016A          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH MACRON
+016C          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH BREVE
+016E          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH RING ABOVE
+0170          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
+0172          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH OGONEK
+0174          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH CIRCUMFLEX
+0176          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH CIRCUMFLEX
+0178..0179    ; Uppercase # L&   [2] LATIN CAPITAL LETTER Y WITH DIAERESIS..LATIN CAPITAL LETTER Z WITH ACUTE
+017B          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH DOT ABOVE
+017D          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH CARON
+0181..0182    ; Uppercase # L&   [2] LATIN CAPITAL LETTER B WITH HOOK..LATIN CAPITAL LETTER B WITH TOPBAR
+0184          ; Uppercase # L&       LATIN CAPITAL LETTER TONE SIX
+0186..0187    ; Uppercase # L&   [2] LATIN CAPITAL LETTER OPEN O..LATIN CAPITAL LETTER C WITH HOOK
+0189..018B    ; Uppercase # L&   [3] LATIN CAPITAL LETTER AFRICAN D..LATIN CAPITAL LETTER D WITH TOPBAR
+018E..0191    ; Uppercase # L&   [4] LATIN CAPITAL LETTER REVERSED E..LATIN CAPITAL LETTER F WITH HOOK
+0193..0194    ; Uppercase # L&   [2] LATIN CAPITAL LETTER G WITH HOOK..LATIN CAPITAL LETTER GAMMA
+0196..0198    ; Uppercase # L&   [3] LATIN CAPITAL LETTER IOTA..LATIN CAPITAL LETTER K WITH HOOK
+019C..019D    ; Uppercase # L&   [2] LATIN CAPITAL LETTER TURNED M..LATIN CAPITAL LETTER N WITH LEFT HOOK
+019F..01A0    ; Uppercase # L&   [2] LATIN CAPITAL LETTER O WITH MIDDLE TILDE..LATIN CAPITAL LETTER O WITH HORN
+01A2          ; Uppercase # L&       LATIN CAPITAL LETTER OI
+01A4          ; Uppercase # L&       LATIN CAPITAL LETTER P WITH HOOK
+01A6..01A7    ; Uppercase # L&   [2] LATIN LETTER YR..LATIN CAPITAL LETTER TONE TWO
+01A9          ; Uppercase # L&       LATIN CAPITAL LETTER ESH
+01AC          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH HOOK
+01AE..01AF    ; Uppercase # L&   [2] LATIN CAPITAL LETTER T WITH RETROFLEX HOOK..LATIN CAPITAL LETTER U WITH HORN
+01B1..01B3    ; Uppercase # L&   [3] LATIN CAPITAL LETTER UPSILON..LATIN CAPITAL LETTER Y WITH HOOK
+01B5          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH STROKE
+01B7..01B8    ; Uppercase # L&   [2] LATIN CAPITAL LETTER EZH..LATIN CAPITAL LETTER EZH REVERSED
+01BC          ; Uppercase # L&       LATIN CAPITAL LETTER TONE FIVE
+01C4          ; Uppercase # L&       LATIN CAPITAL LETTER DZ WITH CARON
+01C7          ; Uppercase # L&       LATIN CAPITAL LETTER LJ
+01CA          ; Uppercase # L&       LATIN CAPITAL LETTER NJ
+01CD          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH CARON
+01CF          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH CARON
+01D1          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH CARON
+01D3          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH CARON
+01D5          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND MACRON
+01D7          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND ACUTE
+01D9          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND CARON
+01DB          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND GRAVE
+01DE          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH DIAERESIS AND MACRON
+01E0          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH DOT ABOVE AND MACRON
+01E2          ; Uppercase # L&       LATIN CAPITAL LETTER AE WITH MACRON
+01E4          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH STROKE
+01E6          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH CARON
+01E8          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH CARON
+01EA          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH OGONEK
+01EC          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH OGONEK AND MACRON
+01EE          ; Uppercase # L&       LATIN CAPITAL LETTER EZH WITH CARON
+01F1          ; Uppercase # L&       LATIN CAPITAL LETTER DZ
+01F4          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH ACUTE
+01F6..01F8    ; Uppercase # L&   [3] LATIN CAPITAL LETTER HWAIR..LATIN CAPITAL LETTER N WITH GRAVE
+01FA          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH RING ABOVE AND ACUTE
+01FC          ; Uppercase # L&       LATIN CAPITAL LETTER AE WITH ACUTE
+01FE          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH STROKE AND ACUTE
+0200          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH DOUBLE GRAVE
+0202          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH INVERTED BREVE
+0204          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH DOUBLE GRAVE
+0206          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH INVERTED BREVE
+0208          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH DOUBLE GRAVE
+020A          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH INVERTED BREVE
+020C          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH DOUBLE GRAVE
+020E          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH INVERTED BREVE
+0210          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH DOUBLE GRAVE
+0212          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH INVERTED BREVE
+0214          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DOUBLE GRAVE
+0216          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH INVERTED BREVE
+0218          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH COMMA BELOW
+021A          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH COMMA BELOW
+021C          ; Uppercase # L&       LATIN CAPITAL LETTER YOGH
+021E          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH CARON
+0220          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH LONG RIGHT LEG
+0222          ; Uppercase # L&       LATIN CAPITAL LETTER OU
+0224          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH HOOK
+0226          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH DOT ABOVE
+0228          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CEDILLA
+022A          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH DIAERESIS AND MACRON
+022C          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH TILDE AND MACRON
+022E          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH DOT ABOVE
+0230          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH DOT ABOVE AND MACRON
+0232          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH MACRON
+023A..023B    ; Uppercase # L&   [2] LATIN CAPITAL LETTER A WITH STROKE..LATIN CAPITAL LETTER C WITH STROKE
+023D..023E    ; Uppercase # L&   [2] LATIN CAPITAL LETTER L WITH BAR..LATIN CAPITAL LETTER T WITH DIAGONAL STROKE
+0241          ; Uppercase # L&       LATIN CAPITAL LETTER GLOTTAL STOP
+0243..0246    ; Uppercase # L&   [4] LATIN CAPITAL LETTER B WITH STROKE..LATIN CAPITAL LETTER E WITH STROKE
+0248          ; Uppercase # L&       LATIN CAPITAL LETTER J WITH STROKE
+024A          ; Uppercase # L&       LATIN CAPITAL LETTER SMALL Q WITH HOOK TAIL
+024C          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH STROKE
+024E          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH STROKE
+0370          ; Uppercase # L&       GREEK CAPITAL LETTER HETA
+0372          ; Uppercase # L&       GREEK CAPITAL LETTER ARCHAIC SAMPI
+0376          ; Uppercase # L&       GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA
+037F          ; Uppercase # L&       GREEK CAPITAL LETTER YOT
+0386          ; Uppercase # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Uppercase # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Uppercase # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..038F    ; Uppercase # L&   [2] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER OMEGA WITH TONOS
+0391..03A1    ; Uppercase # L&  [17] GREEK CAPITAL LETTER ALPHA..GREEK CAPITAL LETTER RHO
+03A3..03AB    ; Uppercase # L&   [9] GREEK CAPITAL LETTER SIGMA..GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA
+03CF          ; Uppercase # L&       GREEK CAPITAL KAI SYMBOL
+03D2..03D4    ; Uppercase # L&   [3] GREEK UPSILON WITH HOOK SYMBOL..GREEK UPSILON WITH DIAERESIS AND HOOK SYMBOL
+03D8          ; Uppercase # L&       GREEK LETTER ARCHAIC KOPPA
+03DA          ; Uppercase # L&       GREEK LETTER STIGMA
+03DC          ; Uppercase # L&       GREEK LETTER DIGAMMA
+03DE          ; Uppercase # L&       GREEK LETTER KOPPA
+03E0          ; Uppercase # L&       GREEK LETTER SAMPI
+03E2          ; Uppercase # L&       COPTIC CAPITAL LETTER SHEI
+03E4          ; Uppercase # L&       COPTIC CAPITAL LETTER FEI
+03E6          ; Uppercase # L&       COPTIC CAPITAL LETTER KHEI
+03E8          ; Uppercase # L&       COPTIC CAPITAL LETTER HORI
+03EA          ; Uppercase # L&       COPTIC CAPITAL LETTER GANGIA
+03EC          ; Uppercase # L&       COPTIC CAPITAL LETTER SHIMA
+03EE          ; Uppercase # L&       COPTIC CAPITAL LETTER DEI
+03F4          ; Uppercase # L&       GREEK CAPITAL THETA SYMBOL
+03F7          ; Uppercase # L&       GREEK CAPITAL LETTER SHO
+03F9..03FA    ; Uppercase # L&   [2] GREEK CAPITAL LUNATE SIGMA SYMBOL..GREEK CAPITAL LETTER SAN
+03FD..042F    ; Uppercase # L&  [51] GREEK CAPITAL REVERSED LUNATE SIGMA SYMBOL..CYRILLIC CAPITAL LETTER YA
+0460          ; Uppercase # L&       CYRILLIC CAPITAL LETTER OMEGA
+0462          ; Uppercase # L&       CYRILLIC CAPITAL LETTER YAT
+0464          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTIFIED E
+0466          ; Uppercase # L&       CYRILLIC CAPITAL LETTER LITTLE YUS
+0468          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTIFIED LITTLE YUS
+046A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BIG YUS
+046C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTIFIED BIG YUS
+046E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KSI
+0470          ; Uppercase # L&       CYRILLIC CAPITAL LETTER PSI
+0472          ; Uppercase # L&       CYRILLIC CAPITAL LETTER FITA
+0474          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IZHITSA
+0476          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0478          ; Uppercase # L&       CYRILLIC CAPITAL LETTER UK
+047A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ROUND OMEGA
+047C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER OMEGA WITH TITLO
+047E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER OT
+0480          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOPPA
+048A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SHORT I WITH TAIL
+048C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SEMISOFT SIGN
+048E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ER WITH TICK
+0490          ; Uppercase # L&       CYRILLIC CAPITAL LETTER GHE WITH UPTURN
+0492          ; Uppercase # L&       CYRILLIC CAPITAL LETTER GHE WITH STROKE
+0494          ; Uppercase # L&       CYRILLIC CAPITAL LETTER GHE WITH MIDDLE HOOK
+0496          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ZHE WITH DESCENDER
+0498          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ZE WITH DESCENDER
+049A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KA WITH DESCENDER
+049C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KA WITH VERTICAL STROKE
+049E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KA WITH STROKE
+04A0          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BASHKIR KA
+04A2          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EN WITH DESCENDER
+04A4          ; Uppercase # L&       CYRILLIC CAPITAL LIGATURE EN GHE
+04A6          ; Uppercase # L&       CYRILLIC CAPITAL LETTER PE WITH MIDDLE HOOK
+04A8          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ABKHASIAN HA
+04AA          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ES WITH DESCENDER
+04AC          ; Uppercase # L&       CYRILLIC CAPITAL LETTER TE WITH DESCENDER
+04AE          ; Uppercase # L&       CYRILLIC CAPITAL LETTER STRAIGHT U
+04B0          ; Uppercase # L&       CYRILLIC CAPITAL LETTER STRAIGHT U WITH STROKE
+04B2          ; Uppercase # L&       CYRILLIC CAPITAL LETTER HA WITH DESCENDER
+04B4          ; Uppercase # L&       CYRILLIC CAPITAL LIGATURE TE TSE
+04B6          ; Uppercase # L&       CYRILLIC CAPITAL LETTER CHE WITH DESCENDER
+04B8          ; Uppercase # L&       CYRILLIC CAPITAL LETTER CHE WITH VERTICAL STROKE
+04BA          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SHHA
+04BC          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ABKHASIAN CHE
+04BE          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ABKHASIAN CHE WITH DESCENDER
+04C0..04C1    ; Uppercase # L&   [2] CYRILLIC LETTER PALOCHKA..CYRILLIC CAPITAL LETTER ZHE WITH BREVE
+04C3          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KA WITH HOOK
+04C5          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EL WITH TAIL
+04C7          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EN WITH HOOK
+04C9          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EN WITH TAIL
+04CB          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KHAKASSIAN CHE
+04CD          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EM WITH TAIL
+04D0          ; Uppercase # L&       CYRILLIC CAPITAL LETTER A WITH BREVE
+04D2          ; Uppercase # L&       CYRILLIC CAPITAL LETTER A WITH DIAERESIS
+04D4          ; Uppercase # L&       CYRILLIC CAPITAL LIGATURE A IE
+04D6          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IE WITH BREVE
+04D8          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SCHWA
+04DA          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SCHWA WITH DIAERESIS
+04DC          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ZHE WITH DIAERESIS
+04DE          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ZE WITH DIAERESIS
+04E0          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ABKHASIAN DZE
+04E2          ; Uppercase # L&       CYRILLIC CAPITAL LETTER I WITH MACRON
+04E4          ; Uppercase # L&       CYRILLIC CAPITAL LETTER I WITH DIAERESIS
+04E6          ; Uppercase # L&       CYRILLIC CAPITAL LETTER O WITH DIAERESIS
+04E8          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BARRED O
+04EA          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BARRED O WITH DIAERESIS
+04EC          ; Uppercase # L&       CYRILLIC CAPITAL LETTER E WITH DIAERESIS
+04EE          ; Uppercase # L&       CYRILLIC CAPITAL LETTER U WITH MACRON
+04F0          ; Uppercase # L&       CYRILLIC CAPITAL LETTER U WITH DIAERESIS
+04F2          ; Uppercase # L&       CYRILLIC CAPITAL LETTER U WITH DOUBLE ACUTE
+04F4          ; Uppercase # L&       CYRILLIC CAPITAL LETTER CHE WITH DIAERESIS
+04F6          ; Uppercase # L&       CYRILLIC CAPITAL LETTER GHE WITH DESCENDER
+04F8          ; Uppercase # L&       CYRILLIC CAPITAL LETTER YERU WITH DIAERESIS
+04FA          ; Uppercase # L&       CYRILLIC CAPITAL LETTER GHE WITH STROKE AND HOOK
+04FC          ; Uppercase # L&       CYRILLIC CAPITAL LETTER HA WITH HOOK
+04FE          ; Uppercase # L&       CYRILLIC CAPITAL LETTER HA WITH STROKE
+0500          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI DE
+0502          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI DJE
+0504          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI ZJE
+0506          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI DZJE
+0508          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI LJE
+050A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI NJE
+050C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI SJE
+050E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER KOMI TJE
+0510          ; Uppercase # L&       CYRILLIC CAPITAL LETTER REVERSED ZE
+0512          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EL WITH HOOK
+0514          ; Uppercase # L&       CYRILLIC CAPITAL LETTER LHA
+0516          ; Uppercase # L&       CYRILLIC CAPITAL LETTER RHA
+0518          ; Uppercase # L&       CYRILLIC CAPITAL LETTER YAE
+051A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER QA
+051C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER WE
+051E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ALEUT KA
+0520          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EL WITH MIDDLE HOOK
+0522          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EN WITH MIDDLE HOOK
+0524          ; Uppercase # L&       CYRILLIC CAPITAL LETTER PE WITH DESCENDER
+0526          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SHHA WITH DESCENDER
+0528          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK
+052A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DZZHE
+052C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DCHE
+052E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER EL WITH DESCENDER
+0531..0556    ; Uppercase # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+10A0..10C5    ; Uppercase # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Uppercase # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Uppercase # L&       GEORGIAN CAPITAL LETTER AEN
+13A0..13F5    ; Uppercase # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+1C90..1CBA    ; Uppercase # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Uppercase # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1E00          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH RING BELOW
+1E02          ; Uppercase # L&       LATIN CAPITAL LETTER B WITH DOT ABOVE
+1E04          ; Uppercase # L&       LATIN CAPITAL LETTER B WITH DOT BELOW
+1E06          ; Uppercase # L&       LATIN CAPITAL LETTER B WITH LINE BELOW
+1E08          ; Uppercase # L&       LATIN CAPITAL LETTER C WITH CEDILLA AND ACUTE
+1E0A          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH DOT ABOVE
+1E0C          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH DOT BELOW
+1E0E          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH LINE BELOW
+1E10          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH CEDILLA
+1E12          ; Uppercase # L&       LATIN CAPITAL LETTER D WITH CIRCUMFLEX BELOW
+1E14          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH MACRON AND GRAVE
+1E16          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH MACRON AND ACUTE
+1E18          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX BELOW
+1E1A          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH TILDE BELOW
+1E1C          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CEDILLA AND BREVE
+1E1E          ; Uppercase # L&       LATIN CAPITAL LETTER F WITH DOT ABOVE
+1E20          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH MACRON
+1E22          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH DOT ABOVE
+1E24          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH DOT BELOW
+1E26          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH DIAERESIS
+1E28          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH CEDILLA
+1E2A          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH BREVE BELOW
+1E2C          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH TILDE BELOW
+1E2E          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH DIAERESIS AND ACUTE
+1E30          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH ACUTE
+1E32          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH DOT BELOW
+1E34          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH LINE BELOW
+1E36          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH DOT BELOW
+1E38          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH DOT BELOW AND MACRON
+1E3A          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH LINE BELOW
+1E3C          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH CIRCUMFLEX BELOW
+1E3E          ; Uppercase # L&       LATIN CAPITAL LETTER M WITH ACUTE
+1E40          ; Uppercase # L&       LATIN CAPITAL LETTER M WITH DOT ABOVE
+1E42          ; Uppercase # L&       LATIN CAPITAL LETTER M WITH DOT BELOW
+1E44          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH DOT ABOVE
+1E46          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH DOT BELOW
+1E48          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH LINE BELOW
+1E4A          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH CIRCUMFLEX BELOW
+1E4C          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH TILDE AND ACUTE
+1E4E          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH TILDE AND DIAERESIS
+1E50          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH MACRON AND GRAVE
+1E52          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH MACRON AND ACUTE
+1E54          ; Uppercase # L&       LATIN CAPITAL LETTER P WITH ACUTE
+1E56          ; Uppercase # L&       LATIN CAPITAL LETTER P WITH DOT ABOVE
+1E58          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH DOT ABOVE
+1E5A          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH DOT BELOW
+1E5C          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH DOT BELOW AND MACRON
+1E5E          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH LINE BELOW
+1E60          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH DOT ABOVE
+1E62          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH DOT BELOW
+1E64          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH ACUTE AND DOT ABOVE
+1E66          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH CARON AND DOT ABOVE
+1E68          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6A          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH DOT ABOVE
+1E6C          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH DOT BELOW
+1E6E          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH LINE BELOW
+1E70          ; Uppercase # L&       LATIN CAPITAL LETTER T WITH CIRCUMFLEX BELOW
+1E72          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DIAERESIS BELOW
+1E74          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH TILDE BELOW
+1E76          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH CIRCUMFLEX BELOW
+1E78          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH TILDE AND ACUTE
+1E7A          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH MACRON AND DIAERESIS
+1E7C          ; Uppercase # L&       LATIN CAPITAL LETTER V WITH TILDE
+1E7E          ; Uppercase # L&       LATIN CAPITAL LETTER V WITH DOT BELOW
+1E80          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH GRAVE
+1E82          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH ACUTE
+1E84          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH DIAERESIS
+1E86          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH DOT ABOVE
+1E88          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH DOT BELOW
+1E8A          ; Uppercase # L&       LATIN CAPITAL LETTER X WITH DOT ABOVE
+1E8C          ; Uppercase # L&       LATIN CAPITAL LETTER X WITH DIAERESIS
+1E8E          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH DOT ABOVE
+1E90          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH CIRCUMFLEX
+1E92          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH DOT BELOW
+1E94          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH LINE BELOW
+1E9E          ; Uppercase # L&       LATIN CAPITAL LETTER SHARP S
+1EA0          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH DOT BELOW
+1EA2          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH HOOK ABOVE
+1EA4          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA6          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA8          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAA          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAC          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAE          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH BREVE AND ACUTE
+1EB0          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH BREVE AND GRAVE
+1EB2          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH BREVE AND HOOK ABOVE
+1EB4          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH BREVE AND TILDE
+1EB6          ; Uppercase # L&       LATIN CAPITAL LETTER A WITH BREVE AND DOT BELOW
+1EB8          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH DOT BELOW
+1EBA          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH HOOK ABOVE
+1EBC          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH TILDE
+1EBE          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC0          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC2          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC4          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC6          ; Uppercase # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC8          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH HOOK ABOVE
+1ECA          ; Uppercase # L&       LATIN CAPITAL LETTER I WITH DOT BELOW
+1ECC          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH DOT BELOW
+1ECE          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH HOOK ABOVE
+1ED0          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED2          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED4          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED6          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED8          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDA          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH HORN AND ACUTE
+1EDC          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH HORN AND GRAVE
+1EDE          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH HORN AND HOOK ABOVE
+1EE0          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH HORN AND TILDE
+1EE2          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH HORN AND DOT BELOW
+1EE4          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH DOT BELOW
+1EE6          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH HOOK ABOVE
+1EE8          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH HORN AND ACUTE
+1EEA          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH HORN AND GRAVE
+1EEC          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH HORN AND HOOK ABOVE
+1EEE          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH HORN AND TILDE
+1EF0          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH HORN AND DOT BELOW
+1EF2          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH GRAVE
+1EF4          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH DOT BELOW
+1EF6          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH HOOK ABOVE
+1EF8          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH TILDE
+1EFA          ; Uppercase # L&       LATIN CAPITAL LETTER MIDDLE-WELSH LL
+1EFC          ; Uppercase # L&       LATIN CAPITAL LETTER MIDDLE-WELSH V
+1EFE          ; Uppercase # L&       LATIN CAPITAL LETTER Y WITH LOOP
+1F08..1F0F    ; Uppercase # L&   [8] GREEK CAPITAL LETTER ALPHA WITH PSILI..GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F18..1F1D    ; Uppercase # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F28..1F2F    ; Uppercase # L&   [8] GREEK CAPITAL LETTER ETA WITH PSILI..GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI
+1F38..1F3F    ; Uppercase # L&   [8] GREEK CAPITAL LETTER IOTA WITH PSILI..GREEK CAPITAL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F48..1F4D    ; Uppercase # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F59          ; Uppercase # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Uppercase # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Uppercase # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F          ; Uppercase # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F68..1F6F    ; Uppercase # L&   [8] GREEK CAPITAL LETTER OMEGA WITH PSILI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1FB8..1FBB    ; Uppercase # L&   [4] GREEK CAPITAL LETTER ALPHA WITH VRACHY..GREEK CAPITAL LETTER ALPHA WITH OXIA
+1FC8..1FCB    ; Uppercase # L&   [4] GREEK CAPITAL LETTER EPSILON WITH VARIA..GREEK CAPITAL LETTER ETA WITH OXIA
+1FD8..1FDB    ; Uppercase # L&   [4] GREEK CAPITAL LETTER IOTA WITH VRACHY..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE8..1FEC    ; Uppercase # L&   [5] GREEK CAPITAL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF8..1FFB    ; Uppercase # L&   [4] GREEK CAPITAL LETTER OMICRON WITH VARIA..GREEK CAPITAL LETTER OMEGA WITH OXIA
+2102          ; Uppercase # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; Uppercase # L&       EULER CONSTANT
+210B..210D    ; Uppercase # L&   [3] SCRIPT CAPITAL H..DOUBLE-STRUCK CAPITAL H
+2110..2112    ; Uppercase # L&   [3] SCRIPT CAPITAL I..SCRIPT CAPITAL L
+2115          ; Uppercase # L&       DOUBLE-STRUCK CAPITAL N
+2119..211D    ; Uppercase # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; Uppercase # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; Uppercase # L&       OHM SIGN
+2128          ; Uppercase # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; Uppercase # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+2130..2133    ; Uppercase # L&   [4] SCRIPT CAPITAL E..SCRIPT CAPITAL M
+213E..213F    ; Uppercase # L&   [2] DOUBLE-STRUCK CAPITAL GAMMA..DOUBLE-STRUCK CAPITAL PI
+2145          ; Uppercase # L&       DOUBLE-STRUCK ITALIC CAPITAL D
+2160..216F    ; Uppercase # Nl  [16] ROMAN NUMERAL ONE..ROMAN NUMERAL ONE THOUSAND
+2183          ; Uppercase # L&       ROMAN NUMERAL REVERSED ONE HUNDRED
+24B6..24CF    ; Uppercase # So  [26] CIRCLED LATIN CAPITAL LETTER A..CIRCLED LATIN CAPITAL LETTER Z
+2C00..2C2F    ; Uppercase # L&  [48] GLAGOLITIC CAPITAL LETTER AZU..GLAGOLITIC CAPITAL LETTER CAUDATE CHRIVI
+2C60          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH DOUBLE BAR
+2C62..2C64    ; Uppercase # L&   [3] LATIN CAPITAL LETTER L WITH MIDDLE TILDE..LATIN CAPITAL LETTER R WITH TAIL
+2C67          ; Uppercase # L&       LATIN CAPITAL LETTER H WITH DESCENDER
+2C69          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH DESCENDER
+2C6B          ; Uppercase # L&       LATIN CAPITAL LETTER Z WITH DESCENDER
+2C6D..2C70    ; Uppercase # L&   [4] LATIN CAPITAL LETTER ALPHA..LATIN CAPITAL LETTER TURNED ALPHA
+2C72          ; Uppercase # L&       LATIN CAPITAL LETTER W WITH HOOK
+2C75          ; Uppercase # L&       LATIN CAPITAL LETTER HALF H
+2C7E..2C80    ; Uppercase # L&   [3] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC CAPITAL LETTER ALFA
+2C82          ; Uppercase # L&       COPTIC CAPITAL LETTER VIDA
+2C84          ; Uppercase # L&       COPTIC CAPITAL LETTER GAMMA
+2C86          ; Uppercase # L&       COPTIC CAPITAL LETTER DALDA
+2C88          ; Uppercase # L&       COPTIC CAPITAL LETTER EIE
+2C8A          ; Uppercase # L&       COPTIC CAPITAL LETTER SOU
+2C8C          ; Uppercase # L&       COPTIC CAPITAL LETTER ZATA
+2C8E          ; Uppercase # L&       COPTIC CAPITAL LETTER HATE
+2C90          ; Uppercase # L&       COPTIC CAPITAL LETTER THETHE
+2C92          ; Uppercase # L&       COPTIC CAPITAL LETTER IAUDA
+2C94          ; Uppercase # L&       COPTIC CAPITAL LETTER KAPA
+2C96          ; Uppercase # L&       COPTIC CAPITAL LETTER LAULA
+2C98          ; Uppercase # L&       COPTIC CAPITAL LETTER MI
+2C9A          ; Uppercase # L&       COPTIC CAPITAL LETTER NI
+2C9C          ; Uppercase # L&       COPTIC CAPITAL LETTER KSI
+2C9E          ; Uppercase # L&       COPTIC CAPITAL LETTER O
+2CA0          ; Uppercase # L&       COPTIC CAPITAL LETTER PI
+2CA2          ; Uppercase # L&       COPTIC CAPITAL LETTER RO
+2CA4          ; Uppercase # L&       COPTIC CAPITAL LETTER SIMA
+2CA6          ; Uppercase # L&       COPTIC CAPITAL LETTER TAU
+2CA8          ; Uppercase # L&       COPTIC CAPITAL LETTER UA
+2CAA          ; Uppercase # L&       COPTIC CAPITAL LETTER FI
+2CAC          ; Uppercase # L&       COPTIC CAPITAL LETTER KHI
+2CAE          ; Uppercase # L&       COPTIC CAPITAL LETTER PSI
+2CB0          ; Uppercase # L&       COPTIC CAPITAL LETTER OOU
+2CB2          ; Uppercase # L&       COPTIC CAPITAL LETTER DIALECT-P ALEF
+2CB4          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC AIN
+2CB6          ; Uppercase # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC EIE
+2CB8          ; Uppercase # L&       COPTIC CAPITAL LETTER DIALECT-P KAPA
+2CBA          ; Uppercase # L&       COPTIC CAPITAL LETTER DIALECT-P NI
+2CBC          ; Uppercase # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC NI
+2CBE          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC OOU
+2CC0          ; Uppercase # L&       COPTIC CAPITAL LETTER SAMPI
+2CC2          ; Uppercase # L&       COPTIC CAPITAL LETTER CROSSED SHEI
+2CC4          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC SHEI
+2CC6          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC ESH
+2CC8          ; Uppercase # L&       COPTIC CAPITAL LETTER AKHMIMIC KHEI
+2CCA          ; Uppercase # L&       COPTIC CAPITAL LETTER DIALECT-P HORI
+2CCC          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC HORI
+2CCE          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC HA
+2CD0          ; Uppercase # L&       COPTIC CAPITAL LETTER L-SHAPED HA
+2CD2          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC HEI
+2CD4          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC HAT
+2CD6          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC GANGIA
+2CD8          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC DJA
+2CDA          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD COPTIC SHIMA
+2CDC          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD NUBIAN SHIMA
+2CDE          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD NUBIAN NGI
+2CE0          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD NUBIAN NYI
+2CE2          ; Uppercase # L&       COPTIC CAPITAL LETTER OLD NUBIAN WAU
+2CEB          ; Uppercase # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI
+2CED          ; Uppercase # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC GANGIA
+2CF2          ; Uppercase # L&       COPTIC CAPITAL LETTER BOHAIRIC KHEI
+A640          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ZEMLYA
+A642          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DZELO
+A644          ; Uppercase # L&       CYRILLIC CAPITAL LETTER REVERSED DZE
+A646          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTA
+A648          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DJERV
+A64A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER MONOGRAPH UK
+A64C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BROAD OMEGA
+A64E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER NEUTRAL YER
+A650          ; Uppercase # L&       CYRILLIC CAPITAL LETTER YERU WITH BACK YER
+A652          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTIFIED YAT
+A654          ; Uppercase # L&       CYRILLIC CAPITAL LETTER REVERSED YU
+A656          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTIFIED A
+A658          ; Uppercase # L&       CYRILLIC CAPITAL LETTER CLOSED LITTLE YUS
+A65A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BLENDED YUS
+A65C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER IOTIFIED CLOSED LITTLE YUS
+A65E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER YN
+A660          ; Uppercase # L&       CYRILLIC CAPITAL LETTER REVERSED TSE
+A662          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SOFT DE
+A664          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SOFT EL
+A666          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SOFT EM
+A668          ; Uppercase # L&       CYRILLIC CAPITAL LETTER MONOCULAR O
+A66A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER BINOCULAR O
+A66C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DOUBLE MONOCULAR O
+A680          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DWE
+A682          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DZWE
+A684          ; Uppercase # L&       CYRILLIC CAPITAL LETTER ZHWE
+A686          ; Uppercase # L&       CYRILLIC CAPITAL LETTER CCHE
+A688          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DZZE
+A68A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER TE WITH MIDDLE HOOK
+A68C          ; Uppercase # L&       CYRILLIC CAPITAL LETTER TWE
+A68E          ; Uppercase # L&       CYRILLIC CAPITAL LETTER TSWE
+A690          ; Uppercase # L&       CYRILLIC CAPITAL LETTER TSSE
+A692          ; Uppercase # L&       CYRILLIC CAPITAL LETTER TCHE
+A694          ; Uppercase # L&       CYRILLIC CAPITAL LETTER HWE
+A696          ; Uppercase # L&       CYRILLIC CAPITAL LETTER SHWE
+A698          ; Uppercase # L&       CYRILLIC CAPITAL LETTER DOUBLE O
+A69A          ; Uppercase # L&       CYRILLIC CAPITAL LETTER CROSSED O
+A722          ; Uppercase # L&       LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF
+A724          ; Uppercase # L&       LATIN CAPITAL LETTER EGYPTOLOGICAL AIN
+A726          ; Uppercase # L&       LATIN CAPITAL LETTER HENG
+A728          ; Uppercase # L&       LATIN CAPITAL LETTER TZ
+A72A          ; Uppercase # L&       LATIN CAPITAL LETTER TRESILLO
+A72C          ; Uppercase # L&       LATIN CAPITAL LETTER CUATRILLO
+A72E          ; Uppercase # L&       LATIN CAPITAL LETTER CUATRILLO WITH COMMA
+A732          ; Uppercase # L&       LATIN CAPITAL LETTER AA
+A734          ; Uppercase # L&       LATIN CAPITAL LETTER AO
+A736          ; Uppercase # L&       LATIN CAPITAL LETTER AU
+A738          ; Uppercase # L&       LATIN CAPITAL LETTER AV
+A73A          ; Uppercase # L&       LATIN CAPITAL LETTER AV WITH HORIZONTAL BAR
+A73C          ; Uppercase # L&       LATIN CAPITAL LETTER AY
+A73E          ; Uppercase # L&       LATIN CAPITAL LETTER REVERSED C WITH DOT
+A740          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH STROKE
+A742          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH DIAGONAL STROKE
+A744          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH STROKE AND DIAGONAL STROKE
+A746          ; Uppercase # L&       LATIN CAPITAL LETTER BROKEN L
+A748          ; Uppercase # L&       LATIN CAPITAL LETTER L WITH HIGH STROKE
+A74A          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH LONG STROKE OVERLAY
+A74C          ; Uppercase # L&       LATIN CAPITAL LETTER O WITH LOOP
+A74E          ; Uppercase # L&       LATIN CAPITAL LETTER OO
+A750          ; Uppercase # L&       LATIN CAPITAL LETTER P WITH STROKE THROUGH DESCENDER
+A752          ; Uppercase # L&       LATIN CAPITAL LETTER P WITH FLOURISH
+A754          ; Uppercase # L&       LATIN CAPITAL LETTER P WITH SQUIRREL TAIL
+A756          ; Uppercase # L&       LATIN CAPITAL LETTER Q WITH STROKE THROUGH DESCENDER
+A758          ; Uppercase # L&       LATIN CAPITAL LETTER Q WITH DIAGONAL STROKE
+A75A          ; Uppercase # L&       LATIN CAPITAL LETTER R ROTUNDA
+A75C          ; Uppercase # L&       LATIN CAPITAL LETTER RUM ROTUNDA
+A75E          ; Uppercase # L&       LATIN CAPITAL LETTER V WITH DIAGONAL STROKE
+A760          ; Uppercase # L&       LATIN CAPITAL LETTER VY
+A762          ; Uppercase # L&       LATIN CAPITAL LETTER VISIGOTHIC Z
+A764          ; Uppercase # L&       LATIN CAPITAL LETTER THORN WITH STROKE
+A766          ; Uppercase # L&       LATIN CAPITAL LETTER THORN WITH STROKE THROUGH DESCENDER
+A768          ; Uppercase # L&       LATIN CAPITAL LETTER VEND
+A76A          ; Uppercase # L&       LATIN CAPITAL LETTER ET
+A76C          ; Uppercase # L&       LATIN CAPITAL LETTER IS
+A76E          ; Uppercase # L&       LATIN CAPITAL LETTER CON
+A779          ; Uppercase # L&       LATIN CAPITAL LETTER INSULAR D
+A77B          ; Uppercase # L&       LATIN CAPITAL LETTER INSULAR F
+A77D..A77E    ; Uppercase # L&   [2] LATIN CAPITAL LETTER INSULAR G..LATIN CAPITAL LETTER TURNED INSULAR G
+A780          ; Uppercase # L&       LATIN CAPITAL LETTER TURNED L
+A782          ; Uppercase # L&       LATIN CAPITAL LETTER INSULAR R
+A784          ; Uppercase # L&       LATIN CAPITAL LETTER INSULAR S
+A786          ; Uppercase # L&       LATIN CAPITAL LETTER INSULAR T
+A78B          ; Uppercase # L&       LATIN CAPITAL LETTER SALTILLO
+A78D          ; Uppercase # L&       LATIN CAPITAL LETTER TURNED H
+A790          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH DESCENDER
+A792          ; Uppercase # L&       LATIN CAPITAL LETTER C WITH BAR
+A796          ; Uppercase # L&       LATIN CAPITAL LETTER B WITH FLOURISH
+A798          ; Uppercase # L&       LATIN CAPITAL LETTER F WITH STROKE
+A79A          ; Uppercase # L&       LATIN CAPITAL LETTER VOLAPUK AE
+A79C          ; Uppercase # L&       LATIN CAPITAL LETTER VOLAPUK OE
+A79E          ; Uppercase # L&       LATIN CAPITAL LETTER VOLAPUK UE
+A7A0          ; Uppercase # L&       LATIN CAPITAL LETTER G WITH OBLIQUE STROKE
+A7A2          ; Uppercase # L&       LATIN CAPITAL LETTER K WITH OBLIQUE STROKE
+A7A4          ; Uppercase # L&       LATIN CAPITAL LETTER N WITH OBLIQUE STROKE
+A7A6          ; Uppercase # L&       LATIN CAPITAL LETTER R WITH OBLIQUE STROKE
+A7A8          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH OBLIQUE STROKE
+A7AA..A7AE    ; Uppercase # L&   [5] LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPITAL LETTER SMALL CAPITAL I
+A7B0..A7B4    ; Uppercase # L&   [5] LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL LETTER BETA
+A7B6          ; Uppercase # L&       LATIN CAPITAL LETTER OMEGA
+A7B8          ; Uppercase # L&       LATIN CAPITAL LETTER U WITH STROKE
+A7BA          ; Uppercase # L&       LATIN CAPITAL LETTER GLOTTAL A
+A7BC          ; Uppercase # L&       LATIN CAPITAL LETTER GLOTTAL I
+A7BE          ; Uppercase # L&       LATIN CAPITAL LETTER GLOTTAL U
+A7C0          ; Uppercase # L&       LATIN CAPITAL LETTER OLD POLISH O
+A7C2          ; Uppercase # L&       LATIN CAPITAL LETTER ANGLICANA W
+A7C4..A7C7    ; Uppercase # L&   [4] LATIN CAPITAL LETTER C WITH PALATAL HOOK..LATIN CAPITAL LETTER D WITH SHORT STROKE OVERLAY
+A7C9          ; Uppercase # L&       LATIN CAPITAL LETTER S WITH SHORT STROKE OVERLAY
+A7D0          ; Uppercase # L&       LATIN CAPITAL LETTER CLOSED INSULAR G
+A7D6          ; Uppercase # L&       LATIN CAPITAL LETTER MIDDLE SCOTS S
+A7D8          ; Uppercase # L&       LATIN CAPITAL LETTER SIGMOID S
+A7F5          ; Uppercase # L&       LATIN CAPITAL LETTER REVERSED HALF H
+FF21..FF3A    ; Uppercase # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+10400..10427  ; Uppercase # L&  [40] DESERET CAPITAL LETTER LONG I..DESERET CAPITAL LETTER EW
+104B0..104D3  ; Uppercase # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+10570..1057A  ; Uppercase # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Uppercase # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Uppercase # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Uppercase # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10C80..10CB2  ; Uppercase # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+118A0..118BF  ; Uppercase # L&  [32] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI CAPITAL LETTER VIYO
+16E40..16E5F  ; Uppercase # L&  [32] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAPITAL LETTER Y
+1D400..1D419  ; Uppercase # L&  [26] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL BOLD CAPITAL Z
+1D434..1D44D  ; Uppercase # L&  [26] MATHEMATICAL ITALIC CAPITAL A..MATHEMATICAL ITALIC CAPITAL Z
+1D468..1D481  ; Uppercase # L&  [26] MATHEMATICAL BOLD ITALIC CAPITAL A..MATHEMATICAL BOLD ITALIC CAPITAL Z
+1D49C         ; Uppercase # L&       MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; Uppercase # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; Uppercase # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; Uppercase # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; Uppercase # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B5  ; Uppercase # L&   [8] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT CAPITAL Z
+1D4D0..1D4E9  ; Uppercase # L&  [26] MATHEMATICAL BOLD SCRIPT CAPITAL A..MATHEMATICAL BOLD SCRIPT CAPITAL Z
+1D504..1D505  ; Uppercase # L&   [2] MATHEMATICAL FRAKTUR CAPITAL A..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; Uppercase # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; Uppercase # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; Uppercase # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D538..1D539  ; Uppercase # L&   [2] MATHEMATICAL DOUBLE-STRUCK CAPITAL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; Uppercase # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; Uppercase # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; Uppercase # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; Uppercase # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D56C..1D585  ; Uppercase # L&  [26] MATHEMATICAL BOLD FRAKTUR CAPITAL A..MATHEMATICAL BOLD FRAKTUR CAPITAL Z
+1D5A0..1D5B9  ; Uppercase # L&  [26] MATHEMATICAL SANS-SERIF CAPITAL A..MATHEMATICAL SANS-SERIF CAPITAL Z
+1D5D4..1D5ED  ; Uppercase # L&  [26] MATHEMATICAL SANS-SERIF BOLD CAPITAL A..MATHEMATICAL SANS-SERIF BOLD CAPITAL Z
+1D608..1D621  ; Uppercase # L&  [26] MATHEMATICAL SANS-SERIF ITALIC CAPITAL A..MATHEMATICAL SANS-SERIF ITALIC CAPITAL Z
+1D63C..1D655  ; Uppercase # L&  [26] MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL A..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL Z
+1D670..1D689  ; Uppercase # L&  [26] MATHEMATICAL MONOSPACE CAPITAL A..MATHEMATICAL MONOSPACE CAPITAL Z
+1D6A8..1D6C0  ; Uppercase # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6E2..1D6FA  ; Uppercase # L&  [25] MATHEMATICAL ITALIC CAPITAL ALPHA..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D71C..1D734  ; Uppercase # L&  [25] MATHEMATICAL BOLD ITALIC CAPITAL ALPHA..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D756..1D76E  ; Uppercase # L&  [25] MATHEMATICAL SANS-SERIF BOLD CAPITAL ALPHA..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D790..1D7A8  ; Uppercase # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7CA         ; Uppercase # L&       MATHEMATICAL BOLD CAPITAL DIGAMMA
+1E900..1E921  ; Uppercase # L&  [34] ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETTER SHA
+1F130..1F149  ; Uppercase # So  [26] SQUARED LATIN CAPITAL LETTER A..SQUARED LATIN CAPITAL LETTER Z
+1F150..1F169  ; Uppercase # So  [26] NEGATIVE CIRCLED LATIN CAPITAL LETTER A..NEGATIVE CIRCLED LATIN CAPITAL LETTER Z
+1F170..1F189  ; Uppercase # So  [26] NEGATIVE SQUARED LATIN CAPITAL LETTER A..NEGATIVE SQUARED LATIN CAPITAL LETTER Z
+
+# Total code points: 1951
+
+# ================================================
+
+# Derived Property:   Cased (Cased)
+#  As defined by Unicode Standard Definition D135
+#  C has the Lowercase or Uppercase property or has a General_Category value of Titlecase_Letter.
+
+0041..005A    ; Cased # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+0061..007A    ; Cased # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; Cased # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; Cased # L&       MICRO SIGN
+00BA          ; Cased # Lo       MASCULINE ORDINAL INDICATOR
+00C0..00D6    ; Cased # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; Cased # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..01BA    ; Cased # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BC..01BF    ; Cased # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C4..0293    ; Cased # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0295..02AF    ; Cased # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02B8    ; Cased # Lm   [9] MODIFIER LETTER SMALL H..MODIFIER LETTER SMALL Y
+02C0..02C1    ; Cased # Lm   [2] MODIFIER LETTER GLOTTAL STOP..MODIFIER LETTER REVERSED GLOTTAL STOP
+02E0..02E4    ; Cased # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+0345          ; Cased # Mn       COMBINING GREEK YPOGEGRAMMENI
+0370..0373    ; Cased # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0376..0377    ; Cased # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037A          ; Cased # Lm       GREEK YPOGEGRAMMENI
+037B..037D    ; Cased # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; Cased # L&       GREEK CAPITAL LETTER YOT
+0386          ; Cased # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Cased # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Cased # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; Cased # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; Cased # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F7..0481    ; Cased # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+048A..052F    ; Cased # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; Cased # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0560..0588    ; Cased # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+10A0..10C5    ; Cased # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Cased # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Cased # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; Cased # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; Cased # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; Cased # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+13A0..13F5    ; Cased # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; Cased # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Cased # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; Cased # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Cased # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1D00..1D2B    ; Cased # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; Cased # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; Cased # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; Cased # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; Cased # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; Cased # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1E00..1F15    ; Cased # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; Cased # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; Cased # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; Cased # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Cased # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; Cased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Cased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Cased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; Cased # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; Cased # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; Cased # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; Cased # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Cased # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; Cased # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; Cased # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; Cased # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; Cased # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; Cased # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; Cased # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2071          ; Cased # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; Cased # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; Cased # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+2102          ; Cased # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; Cased # L&       EULER CONSTANT
+210A..2113    ; Cased # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; Cased # L&       DOUBLE-STRUCK CAPITAL N
+2119..211D    ; Cased # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; Cased # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; Cased # L&       OHM SIGN
+2128          ; Cased # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; Cased # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212F..2134    ; Cased # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2139          ; Cased # L&       INFORMATION SOURCE
+213C..213F    ; Cased # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2145..2149    ; Cased # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; Cased # L&       TURNED SMALL F
+2160..217F    ; Cased # Nl  [32] ROMAN NUMERAL ONE..SMALL ROMAN NUMERAL ONE THOUSAND
+2183..2184    ; Cased # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+24B6..24E9    ; Cased # So  [52] CIRCLED LATIN CAPITAL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2C00..2C7B    ; Cased # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; Cased # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; Cased # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CEB..2CEE    ; Cased # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF2..2CF3    ; Cased # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Cased # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Cased # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Cased # L&       GEORGIAN SMALL LETTER AEN
+A640..A66D    ; Cased # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A680..A69B    ; Cased # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; Cased # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A722..A76F    ; Cased # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; Cased # Lm       MODIFIER LETTER US
+A771..A787    ; Cased # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A78B..A78E    ; Cased # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A790..A7CA    ; Cased # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; Cased # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; Cased # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; Cased # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; Cased # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; Cased # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F8..A7F9    ; Cased # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; Cased # L&       LATIN LETTER SMALL CAPITAL TURNED M
+AB30..AB5A    ; Cased # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; Cased # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; Cased # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; Cased # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; Cased # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Cased # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Cased # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF21..FF3A    ; Cased # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF41..FF5A    ; Cased # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+10400..1044F  ; Cased # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+104B0..104D3  ; Cased # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; Cased # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10570..1057A  ; Cased # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Cased # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Cased # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Cased # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; Cased # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Cased # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Cased # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Cased # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10780         ; Cased # Lm       MODIFIER LETTER SMALL CAPITAL AA
+10783..10785  ; Cased # Lm   [3] MODIFIER LETTER SMALL AE..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; Cased # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; Cased # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10C80..10CB2  ; Cased # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; Cased # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+118A0..118DF  ; Cased # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+16E40..16E7F  ; Cased # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+1D400..1D454  ; Cased # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; Cased # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; Cased # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; Cased # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; Cased # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; Cased # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; Cased # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; Cased # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; Cased # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; Cased # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; Cased # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; Cased # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; Cased # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; Cased # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; Cased # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; Cased # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; Cased # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; Cased # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; Cased # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; Cased # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C2..1D6DA  ; Cased # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6FA  ; Cased # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FC..1D714  ; Cased # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D734  ; Cased # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D736..1D74E  ; Cased # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D76E  ; Cased # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D770..1D788  ; Cased # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D7A8  ; Cased # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7AA..1D7C2  ; Cased # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7CB  ; Cased # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1DF00..1DF09  ; Cased # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0B..1DF1E  ; Cased # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; Cased # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E030..1E06D  ; Cased # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E900..1E943  ; Cased # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1F130..1F149  ; Cased # So  [26] SQUARED LATIN CAPITAL LETTER A..SQUARED LATIN CAPITAL LETTER Z
+1F150..1F169  ; Cased # So  [26] NEGATIVE CIRCLED LATIN CAPITAL LETTER A..NEGATIVE CIRCLED LATIN CAPITAL LETTER Z
+1F170..1F189  ; Cased # So  [26] NEGATIVE SQUARED LATIN CAPITAL LETTER A..NEGATIVE SQUARED LATIN CAPITAL LETTER Z
+
+# Total code points: 4526
+
+# ================================================
+
+# Derived Property:   Case_Ignorable (CI)
+#  As defined by Unicode Standard Definition D136
+#  C is defined to be case-ignorable if
+#    Word_Break(C) = MidLetter or MidNumLet or Single_Quote, or
+#    General_Category(C) = Nonspacing_Mark (Mn), Enclosing_Mark (Me), Format (Cf), Modifier_Letter (Lm), or Modifier_Symbol (Sk).
+
+0027          ; Case_Ignorable # Po       APOSTROPHE
+002E          ; Case_Ignorable # Po       FULL STOP
+003A          ; Case_Ignorable # Po       COLON
+005E          ; Case_Ignorable # Sk       CIRCUMFLEX ACCENT
+0060          ; Case_Ignorable # Sk       GRAVE ACCENT
+00A8          ; Case_Ignorable # Sk       DIAERESIS
+00AD          ; Case_Ignorable # Cf       SOFT HYPHEN
+00AF          ; Case_Ignorable # Sk       MACRON
+00B4          ; Case_Ignorable # Sk       ACUTE ACCENT
+00B7          ; Case_Ignorable # Po       MIDDLE DOT
+00B8          ; Case_Ignorable # Sk       CEDILLA
+02B0..02C1    ; Case_Ignorable # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C2..02C5    ; Case_Ignorable # Sk   [4] MODIFIER LETTER LEFT ARROWHEAD..MODIFIER LETTER DOWN ARROWHEAD
+02C6..02D1    ; Case_Ignorable # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02D2..02DF    ; Case_Ignorable # Sk  [14] MODIFIER LETTER CENTRED RIGHT HALF RING..MODIFIER LETTER CROSS ACCENT
+02E0..02E4    ; Case_Ignorable # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02E5..02EB    ; Case_Ignorable # Sk   [7] MODIFIER LETTER EXTRA-HIGH TONE BAR..MODIFIER LETTER YANG DEPARTING TONE MARK
+02EC          ; Case_Ignorable # Lm       MODIFIER LETTER VOICING
+02ED          ; Case_Ignorable # Sk       MODIFIER LETTER UNASPIRATED
+02EE          ; Case_Ignorable # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+02EF..02FF    ; Case_Ignorable # Sk  [17] MODIFIER LETTER LOW DOWN ARROWHEAD..MODIFIER LETTER LOW LEFT ARROW
+0300..036F    ; Case_Ignorable # Mn [112] COMBINING GRAVE ACCENT..COMBINING LATIN SMALL LETTER X
+0374          ; Case_Ignorable # Lm       GREEK NUMERAL SIGN
+0375          ; Case_Ignorable # Sk       GREEK LOWER NUMERAL SIGN
+037A          ; Case_Ignorable # Lm       GREEK YPOGEGRAMMENI
+0384..0385    ; Case_Ignorable # Sk   [2] GREEK TONOS..GREEK DIALYTIKA TONOS
+0387          ; Case_Ignorable # Po       GREEK ANO TELEIA
+0483..0487    ; Case_Ignorable # Mn   [5] COMBINING CYRILLIC TITLO..COMBINING CYRILLIC POKRYTIE
+0488..0489    ; Case_Ignorable # Me   [2] COMBINING CYRILLIC HUNDRED THOUSANDS SIGN..COMBINING CYRILLIC MILLIONS SIGN
+0559          ; Case_Ignorable # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+055F          ; Case_Ignorable # Po       ARMENIAN ABBREVIATION MARK
+0591..05BD    ; Case_Ignorable # Mn  [45] HEBREW ACCENT ETNAHTA..HEBREW POINT METEG
+05BF          ; Case_Ignorable # Mn       HEBREW POINT RAFE
+05C1..05C2    ; Case_Ignorable # Mn   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; Case_Ignorable # Mn   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; Case_Ignorable # Mn       HEBREW POINT QAMATS QATAN
+05F4          ; Case_Ignorable # Po       HEBREW PUNCTUATION GERSHAYIM
+0600..0605    ; Case_Ignorable # Cf   [6] ARABIC NUMBER SIGN..ARABIC NUMBER MARK ABOVE
+0610..061A    ; Case_Ignorable # Mn  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+061C          ; Case_Ignorable # Cf       ARABIC LETTER MARK
+0640          ; Case_Ignorable # Lm       ARABIC TATWEEL
+064B..065F    ; Case_Ignorable # Mn  [21] ARABIC FATHATAN..ARABIC WAVY HAMZA BELOW
+0670          ; Case_Ignorable # Mn       ARABIC LETTER SUPERSCRIPT ALEF
+06D6..06DC    ; Case_Ignorable # Mn   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06DD          ; Case_Ignorable # Cf       ARABIC END OF AYAH
+06DF..06E4    ; Case_Ignorable # Mn   [6] ARABIC SMALL HIGH ROUNDED ZERO..ARABIC SMALL HIGH MADDA
+06E5..06E6    ; Case_Ignorable # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06E7..06E8    ; Case_Ignorable # Mn   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06EA..06ED    ; Case_Ignorable # Mn   [4] ARABIC EMPTY CENTRE LOW STOP..ARABIC SMALL LOW MEEM
+070F          ; Case_Ignorable # Cf       SYRIAC ABBREVIATION MARK
+0711          ; Case_Ignorable # Mn       SYRIAC LETTER SUPERSCRIPT ALAPH
+0730..074A    ; Case_Ignorable # Mn  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
+07A6..07B0    ; Case_Ignorable # Mn  [11] THAANA ABAFILI..THAANA SUKUN
+07EB..07F3    ; Case_Ignorable # Mn   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07F4..07F5    ; Case_Ignorable # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; Case_Ignorable # Lm       NKO LAJANYALAN
+07FD          ; Case_Ignorable # Mn       NKO DANTAYALAN
+0816..0819    ; Case_Ignorable # Mn   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
+081A          ; Case_Ignorable # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+081B..0823    ; Case_Ignorable # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0824          ; Case_Ignorable # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0825..0827    ; Case_Ignorable # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0828          ; Case_Ignorable # Lm       SAMARITAN MODIFIER LETTER I
+0829..082D    ; Case_Ignorable # Mn   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
+0859..085B    ; Case_Ignorable # Mn   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
+0888          ; Case_Ignorable # Sk       ARABIC RAISED ROUND DOT
+0890..0891    ; Case_Ignorable # Cf   [2] ARABIC POUND MARK ABOVE..ARABIC PIASTRE MARK ABOVE
+0898..089F    ; Case_Ignorable # Mn   [8] ARABIC SMALL HIGH WORD AL-JUZ..ARABIC HALF MADDA OVER MADDA
+08C9          ; Case_Ignorable # Lm       ARABIC SMALL FARSI YEH
+08CA..08E1    ; Case_Ignorable # Mn  [24] ARABIC SMALL HIGH FARSI YEH..ARABIC SMALL HIGH SIGN SAFHA
+08E2          ; Case_Ignorable # Cf       ARABIC DISPUTED END OF AYAH
+08E3..0902    ; Case_Ignorable # Mn  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
+093A          ; Case_Ignorable # Mn       DEVANAGARI VOWEL SIGN OE
+093C          ; Case_Ignorable # Mn       DEVANAGARI SIGN NUKTA
+0941..0948    ; Case_Ignorable # Mn   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+094D          ; Case_Ignorable # Mn       DEVANAGARI SIGN VIRAMA
+0951..0957    ; Case_Ignorable # Mn   [7] DEVANAGARI STRESS SIGN UDATTA..DEVANAGARI VOWEL SIGN UUE
+0962..0963    ; Case_Ignorable # Mn   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0971          ; Case_Ignorable # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0981          ; Case_Ignorable # Mn       BENGALI SIGN CANDRABINDU
+09BC          ; Case_Ignorable # Mn       BENGALI SIGN NUKTA
+09C1..09C4    ; Case_Ignorable # Mn   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09CD          ; Case_Ignorable # Mn       BENGALI SIGN VIRAMA
+09E2..09E3    ; Case_Ignorable # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09FE          ; Case_Ignorable # Mn       BENGALI SANDHI MARK
+0A01..0A02    ; Case_Ignorable # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A3C          ; Case_Ignorable # Mn       GURMUKHI SIGN NUKTA
+0A41..0A42    ; Case_Ignorable # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; Case_Ignorable # Mn   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4D    ; Case_Ignorable # Mn   [3] GURMUKHI VOWEL SIGN OO..GURMUKHI SIGN VIRAMA
+0A51          ; Case_Ignorable # Mn       GURMUKHI SIGN UDAAT
+0A70..0A71    ; Case_Ignorable # Mn   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A75          ; Case_Ignorable # Mn       GURMUKHI SIGN YAKASH
+0A81..0A82    ; Case_Ignorable # Mn   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0ABC          ; Case_Ignorable # Mn       GUJARATI SIGN NUKTA
+0AC1..0AC5    ; Case_Ignorable # Mn   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; Case_Ignorable # Mn   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0ACD          ; Case_Ignorable # Mn       GUJARATI SIGN VIRAMA
+0AE2..0AE3    ; Case_Ignorable # Mn   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AFA..0AFF    ; Case_Ignorable # Mn   [6] GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE NUKTA ABOVE
+0B01          ; Case_Ignorable # Mn       ORIYA SIGN CANDRABINDU
+0B3C          ; Case_Ignorable # Mn       ORIYA SIGN NUKTA
+0B3F          ; Case_Ignorable # Mn       ORIYA VOWEL SIGN I
+0B41..0B44    ; Case_Ignorable # Mn   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B4D          ; Case_Ignorable # Mn       ORIYA SIGN VIRAMA
+0B55..0B56    ; Case_Ignorable # Mn   [2] ORIYA SIGN OVERLINE..ORIYA AI LENGTH MARK
+0B62..0B63    ; Case_Ignorable # Mn   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B82          ; Case_Ignorable # Mn       TAMIL SIGN ANUSVARA
+0BC0          ; Case_Ignorable # Mn       TAMIL VOWEL SIGN II
+0BCD          ; Case_Ignorable # Mn       TAMIL SIGN VIRAMA
+0C00          ; Case_Ignorable # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C04          ; Case_Ignorable # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C3C          ; Case_Ignorable # Mn       TELUGU SIGN NUKTA
+0C3E..0C40    ; Case_Ignorable # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C46..0C48    ; Case_Ignorable # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4D    ; Case_Ignorable # Mn   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
+0C55..0C56    ; Case_Ignorable # Mn   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C62..0C63    ; Case_Ignorable # Mn   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C81          ; Case_Ignorable # Mn       KANNADA SIGN CANDRABINDU
+0CBC          ; Case_Ignorable # Mn       KANNADA SIGN NUKTA
+0CBF          ; Case_Ignorable # Mn       KANNADA VOWEL SIGN I
+0CC6          ; Case_Ignorable # Mn       KANNADA VOWEL SIGN E
+0CCC..0CCD    ; Case_Ignorable # Mn   [2] KANNADA VOWEL SIGN AU..KANNADA SIGN VIRAMA
+0CE2..0CE3    ; Case_Ignorable # Mn   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0D00..0D01    ; Case_Ignorable # Mn   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D3B..0D3C    ; Case_Ignorable # Mn   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D41..0D44    ; Case_Ignorable # Mn   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D4D          ; Case_Ignorable # Mn       MALAYALAM SIGN VIRAMA
+0D62..0D63    ; Case_Ignorable # Mn   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D81          ; Case_Ignorable # Mn       SINHALA SIGN CANDRABINDU
+0DCA          ; Case_Ignorable # Mn       SINHALA SIGN AL-LAKUNA
+0DD2..0DD4    ; Case_Ignorable # Mn   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; Case_Ignorable # Mn       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0E31          ; Case_Ignorable # Mn       THAI CHARACTER MAI HAN-AKAT
+0E34..0E3A    ; Case_Ignorable # Mn   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E46          ; Case_Ignorable # Lm       THAI CHARACTER MAIYAMOK
+0E47..0E4E    ; Case_Ignorable # Mn   [8] THAI CHARACTER MAITAIKHU..THAI CHARACTER YAMAKKAN
+0EB1          ; Case_Ignorable # Mn       LAO VOWEL SIGN MAI KAN
+0EB4..0EBC    ; Case_Ignorable # Mn   [9] LAO VOWEL SIGN I..LAO SEMIVOWEL SIGN LO
+0EC6          ; Case_Ignorable # Lm       LAO KO LA
+0EC8..0ECE    ; Case_Ignorable # Mn   [7] LAO TONE MAI EK..LAO YAMAKKAN
+0F18..0F19    ; Case_Ignorable # Mn   [2] TIBETAN ASTROLOGICAL SIGN -KHYUD PA..TIBETAN ASTROLOGICAL SIGN SDONG TSHUGS
+0F35          ; Case_Ignorable # Mn       TIBETAN MARK NGAS BZUNG NYI ZLA
+0F37          ; Case_Ignorable # Mn       TIBETAN MARK NGAS BZUNG SGOR RTAGS
+0F39          ; Case_Ignorable # Mn       TIBETAN MARK TSA -PHRU
+0F71..0F7E    ; Case_Ignorable # Mn  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F80..0F84    ; Case_Ignorable # Mn   [5] TIBETAN VOWEL SIGN REVERSED I..TIBETAN MARK HALANTA
+0F86..0F87    ; Case_Ignorable # Mn   [2] TIBETAN SIGN LCI RTAGS..TIBETAN SIGN YANG RTAGS
+0F8D..0F97    ; Case_Ignorable # Mn  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; Case_Ignorable # Mn  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+0FC6          ; Case_Ignorable # Mn       TIBETAN SYMBOL PADMA GDAN
+102D..1030    ; Case_Ignorable # Mn   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1032..1037    ; Case_Ignorable # Mn   [6] MYANMAR VOWEL SIGN AI..MYANMAR SIGN DOT BELOW
+1039..103A    ; Case_Ignorable # Mn   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+103D..103E    ; Case_Ignorable # Mn   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+1058..1059    ; Case_Ignorable # Mn   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105E..1060    ; Case_Ignorable # Mn   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1071..1074    ; Case_Ignorable # Mn   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1082          ; Case_Ignorable # Mn       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1085..1086    ; Case_Ignorable # Mn   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+108D          ; Case_Ignorable # Mn       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+109D          ; Case_Ignorable # Mn       MYANMAR VOWEL SIGN AITON AI
+10FC          ; Case_Ignorable # Lm       MODIFIER LETTER GEORGIAN NAR
+135D..135F    ; Case_Ignorable # Mn   [3] ETHIOPIC COMBINING GEMINATION AND VOWEL LENGTH MARK..ETHIOPIC COMBINING GEMINATION MARK
+1712..1714    ; Case_Ignorable # Mn   [3] TAGALOG VOWEL SIGN I..TAGALOG SIGN VIRAMA
+1732..1733    ; Case_Ignorable # Mn   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1752..1753    ; Case_Ignorable # Mn   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1772..1773    ; Case_Ignorable # Mn   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+17B4..17B5    ; Case_Ignorable # Mn   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+17B7..17BD    ; Case_Ignorable # Mn   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17C6          ; Case_Ignorable # Mn       KHMER SIGN NIKAHIT
+17C9..17D3    ; Case_Ignorable # Mn  [11] KHMER SIGN MUUSIKATOAN..KHMER SIGN BATHAMASAT
+17D7          ; Case_Ignorable # Lm       KHMER SIGN LEK TOO
+17DD          ; Case_Ignorable # Mn       KHMER SIGN ATTHACAN
+180B..180D    ; Case_Ignorable # Mn   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180E          ; Case_Ignorable # Cf       MONGOLIAN VOWEL SEPARATOR
+180F          ; Case_Ignorable # Mn       MONGOLIAN FREE VARIATION SELECTOR FOUR
+1843          ; Case_Ignorable # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1885..1886    ; Case_Ignorable # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+18A9          ; Case_Ignorable # Mn       MONGOLIAN LETTER ALI GALI DAGALGA
+1920..1922    ; Case_Ignorable # Mn   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1927..1928    ; Case_Ignorable # Mn   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1932          ; Case_Ignorable # Mn       LIMBU SMALL LETTER ANUSVARA
+1939..193B    ; Case_Ignorable # Mn   [3] LIMBU SIGN MUKPHRENG..LIMBU SIGN SA-I
+1A17..1A18    ; Case_Ignorable # Mn   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A1B          ; Case_Ignorable # Mn       BUGINESE VOWEL SIGN AE
+1A56          ; Case_Ignorable # Mn       TAI THAM CONSONANT SIGN MEDIAL LA
+1A58..1A5E    ; Case_Ignorable # Mn   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A60          ; Case_Ignorable # Mn       TAI THAM SIGN SAKOT
+1A62          ; Case_Ignorable # Mn       TAI THAM VOWEL SIGN MAI SAT
+1A65..1A6C    ; Case_Ignorable # Mn   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A73..1A7C    ; Case_Ignorable # Mn  [10] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN KHUEN-LUE KARAN
+1A7F          ; Case_Ignorable # Mn       TAI THAM COMBINING CRYPTOGRAMMIC DOT
+1AA7          ; Case_Ignorable # Lm       TAI THAM SIGN MAI YAMOK
+1AB0..1ABD    ; Case_Ignorable # Mn  [14] COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBINING PARENTHESES BELOW
+1ABE          ; Case_Ignorable # Me       COMBINING PARENTHESES OVERLAY
+1ABF..1ACE    ; Case_Ignorable # Mn  [16] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; Case_Ignorable # Mn   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B34          ; Case_Ignorable # Mn       BALINESE SIGN REREKAN
+1B36..1B3A    ; Case_Ignorable # Mn   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3C          ; Case_Ignorable # Mn       BALINESE VOWEL SIGN LA LENGA
+1B42          ; Case_Ignorable # Mn       BALINESE VOWEL SIGN PEPET
+1B6B..1B73    ; Case_Ignorable # Mn   [9] BALINESE MUSICAL SYMBOL COMBINING TEGEH..BALINESE MUSICAL SYMBOL COMBINING GONG
+1B80..1B81    ; Case_Ignorable # Mn   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1BA2..1BA5    ; Case_Ignorable # Mn   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA8..1BA9    ; Case_Ignorable # Mn   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAB..1BAD    ; Case_Ignorable # Mn   [3] SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BE6          ; Case_Ignorable # Mn       BATAK SIGN TOMPI
+1BE8..1BE9    ; Case_Ignorable # Mn   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BED          ; Case_Ignorable # Mn       BATAK VOWEL SIGN KARO O
+1BEF..1BF1    ; Case_Ignorable # Mn   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1C2C..1C33    ; Case_Ignorable # Mn   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C36..1C37    ; Case_Ignorable # Mn   [2] LEPCHA SIGN RAN..LEPCHA SIGN NUKTA
+1C78..1C7D    ; Case_Ignorable # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1CD0..1CD2    ; Case_Ignorable # Mn   [3] VEDIC TONE KARSHANA..VEDIC TONE PRENKHA
+1CD4..1CE0    ; Case_Ignorable # Mn  [13] VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC TONE RIGVEDIC KASHMIRI INDEPENDENT SVARITA
+1CE2..1CE8    ; Case_Ignorable # Mn   [7] VEDIC SIGN VISARGA SVARITA..VEDIC SIGN VISARGA ANUDATTA WITH TAIL
+1CED          ; Case_Ignorable # Mn       VEDIC SIGN TIRYAK
+1CF4          ; Case_Ignorable # Mn       VEDIC TONE CANDRA ABOVE
+1CF8..1CF9    ; Case_Ignorable # Mn   [2] VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING ABOVE
+1D2C..1D6A    ; Case_Ignorable # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D78          ; Case_Ignorable # Lm       MODIFIER LETTER CYRILLIC EN
+1D9B..1DBF    ; Case_Ignorable # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1DC0..1DFF    ; Case_Ignorable # Mn  [64] COMBINING DOTTED GRAVE ACCENT..COMBINING RIGHT ARROWHEAD AND DOWN ARROWHEAD BELOW
+1FBD          ; Case_Ignorable # Sk       GREEK KORONIS
+1FBF..1FC1    ; Case_Ignorable # Sk   [3] GREEK PSILI..GREEK DIALYTIKA AND PERISPOMENI
+1FCD..1FCF    ; Case_Ignorable # Sk   [3] GREEK PSILI AND VARIA..GREEK PSILI AND PERISPOMENI
+1FDD..1FDF    ; Case_Ignorable # Sk   [3] GREEK DASIA AND VARIA..GREEK DASIA AND PERISPOMENI
+1FED..1FEF    ; Case_Ignorable # Sk   [3] GREEK DIALYTIKA AND VARIA..GREEK VARIA
+1FFD..1FFE    ; Case_Ignorable # Sk   [2] GREEK OXIA..GREEK DASIA
+200B..200F    ; Case_Ignorable # Cf   [5] ZERO WIDTH SPACE..RIGHT-TO-LEFT MARK
+2018          ; Case_Ignorable # Pi       LEFT SINGLE QUOTATION MARK
+2019          ; Case_Ignorable # Pf       RIGHT SINGLE QUOTATION MARK
+2024          ; Case_Ignorable # Po       ONE DOT LEADER
+2027          ; Case_Ignorable # Po       HYPHENATION POINT
+202A..202E    ; Case_Ignorable # Cf   [5] LEFT-TO-RIGHT EMBEDDING..RIGHT-TO-LEFT OVERRIDE
+2060..2064    ; Case_Ignorable # Cf   [5] WORD JOINER..INVISIBLE PLUS
+2066..206F    ; Case_Ignorable # Cf  [10] LEFT-TO-RIGHT ISOLATE..NOMINAL DIGIT SHAPES
+2071          ; Case_Ignorable # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; Case_Ignorable # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; Case_Ignorable # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+20D0..20DC    ; Case_Ignorable # Mn  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20DD..20E0    ; Case_Ignorable # Me   [4] COMBINING ENCLOSING CIRCLE..COMBINING ENCLOSING CIRCLE BACKSLASH
+20E1          ; Case_Ignorable # Mn       COMBINING LEFT RIGHT ARROW ABOVE
+20E2..20E4    ; Case_Ignorable # Me   [3] COMBINING ENCLOSING SCREEN..COMBINING ENCLOSING UPWARD POINTING TRIANGLE
+20E5..20F0    ; Case_Ignorable # Mn  [12] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING ASTERISK ABOVE
+2C7C..2C7D    ; Case_Ignorable # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2CEF..2CF1    ; Case_Ignorable # Mn   [3] COPTIC COMBINING NI ABOVE..COPTIC COMBINING SPIRITUS LENIS
+2D6F          ; Case_Ignorable # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D7F          ; Case_Ignorable # Mn       TIFINAGH CONSONANT JOINER
+2DE0..2DFF    ; Case_Ignorable # Mn  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+2E2F          ; Case_Ignorable # Lm       VERTICAL TILDE
+3005          ; Case_Ignorable # Lm       IDEOGRAPHIC ITERATION MARK
+302A..302D    ; Case_Ignorable # Mn   [4] IDEOGRAPHIC LEVEL TONE MARK..IDEOGRAPHIC ENTERING TONE MARK
+3031..3035    ; Case_Ignorable # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+303B          ; Case_Ignorable # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+3099..309A    ; Case_Ignorable # Mn   [2] COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK..COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309B..309C    ; Case_Ignorable # Sk   [2] KATAKANA-HIRAGANA VOICED SOUND MARK..KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309D..309E    ; Case_Ignorable # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+30FC..30FE    ; Case_Ignorable # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+A015          ; Case_Ignorable # Lm       YI SYLLABLE WU
+A4F8..A4FD    ; Case_Ignorable # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A60C          ; Case_Ignorable # Lm       VAI SYLLABLE LENGTHENER
+A66F          ; Case_Ignorable # Mn       COMBINING CYRILLIC VZMET
+A670..A672    ; Case_Ignorable # Me   [3] COMBINING CYRILLIC TEN MILLIONS SIGN..COMBINING CYRILLIC THOUSAND MILLIONS SIGN
+A674..A67D    ; Case_Ignorable # Mn  [10] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC PAYEROK
+A67F          ; Case_Ignorable # Lm       CYRILLIC PAYEROK
+A69C..A69D    ; Case_Ignorable # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A69E..A69F    ; Case_Ignorable # Mn   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6F0..A6F1    ; Case_Ignorable # Mn   [2] BAMUM COMBINING MARK KOQNDON..BAMUM COMBINING MARK TUKWENTIS
+A700..A716    ; Case_Ignorable # Sk  [23] MODIFIER LETTER CHINESE TONE YIN PING..MODIFIER LETTER EXTRA-LOW LEFT-STEM TONE BAR
+A717..A71F    ; Case_Ignorable # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A720..A721    ; Case_Ignorable # Sk   [2] MODIFIER LETTER STRESS AND HIGH TONE..MODIFIER LETTER STRESS AND LOW TONE
+A770          ; Case_Ignorable # Lm       MODIFIER LETTER US
+A788          ; Case_Ignorable # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A789..A78A    ; Case_Ignorable # Sk   [2] MODIFIER LETTER COLON..MODIFIER LETTER SHORT EQUALS SIGN
+A7F2..A7F4    ; Case_Ignorable # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F8..A7F9    ; Case_Ignorable # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A802          ; Case_Ignorable # Mn       SYLOTI NAGRI SIGN DVISVARA
+A806          ; Case_Ignorable # Mn       SYLOTI NAGRI SIGN HASANTA
+A80B          ; Case_Ignorable # Mn       SYLOTI NAGRI SIGN ANUSVARA
+A825..A826    ; Case_Ignorable # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A82C          ; Case_Ignorable # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A8C4..A8C5    ; Case_Ignorable # Mn   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
+A8E0..A8F1    ; Case_Ignorable # Mn  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8FF          ; Case_Ignorable # Mn       DEVANAGARI VOWEL SIGN AY
+A926..A92D    ; Case_Ignorable # Mn   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
+A947..A951    ; Case_Ignorable # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A980..A982    ; Case_Ignorable # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A9B3          ; Case_Ignorable # Mn       JAVANESE SIGN CECAK TELU
+A9B6..A9B9    ; Case_Ignorable # Mn   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BC..A9BD    ; Case_Ignorable # Mn   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9CF          ; Case_Ignorable # Lm       JAVANESE PANGRANGKEP
+A9E5          ; Case_Ignorable # Mn       MYANMAR SIGN SHAN SAW
+A9E6          ; Case_Ignorable # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+AA29..AA2E    ; Case_Ignorable # Mn   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA31..AA32    ; Case_Ignorable # Mn   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA35..AA36    ; Case_Ignorable # Mn   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA43          ; Case_Ignorable # Mn       CHAM CONSONANT SIGN FINAL NG
+AA4C          ; Case_Ignorable # Mn       CHAM CONSONANT SIGN FINAL M
+AA70          ; Case_Ignorable # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA7C          ; Case_Ignorable # Mn       MYANMAR SIGN TAI LAING TONE-2
+AAB0          ; Case_Ignorable # Mn       TAI VIET MAI KANG
+AAB2..AAB4    ; Case_Ignorable # Mn   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB7..AAB8    ; Case_Ignorable # Mn   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AABE..AABF    ; Case_Ignorable # Mn   [2] TAI VIET VOWEL AM..TAI VIET TONE MAI EK
+AAC1          ; Case_Ignorable # Mn       TAI VIET TONE MAI THO
+AADD          ; Case_Ignorable # Lm       TAI VIET SYMBOL SAM
+AAEC..AAED    ; Case_Ignorable # Mn   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAF3..AAF4    ; Case_Ignorable # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AAF6          ; Case_Ignorable # Mn       MEETEI MAYEK VIRAMA
+AB5B          ; Case_Ignorable # Sk       MODIFIER BREVE WITH INVERTED BREVE
+AB5C..AB5F    ; Case_Ignorable # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB69          ; Case_Ignorable # Lm       MODIFIER LETTER SMALL TURNED W
+AB6A..AB6B    ; Case_Ignorable # Sk   [2] MODIFIER LETTER LEFT TACK..MODIFIER LETTER RIGHT TACK
+ABE5          ; Case_Ignorable # Mn       MEETEI MAYEK VOWEL SIGN ANAP
+ABE8          ; Case_Ignorable # Mn       MEETEI MAYEK VOWEL SIGN UNAP
+ABED          ; Case_Ignorable # Mn       MEETEI MAYEK APUN IYEK
+FB1E          ; Case_Ignorable # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
+FBB2..FBC2    ; Case_Ignorable # Sk  [17] ARABIC SYMBOL DOT ABOVE..ARABIC SYMBOL WASLA ABOVE
+FE00..FE0F    ; Case_Ignorable # Mn  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FE13          ; Case_Ignorable # Po       PRESENTATION FORM FOR VERTICAL COLON
+FE20..FE2F    ; Case_Ignorable # Mn  [16] COMBINING LIGATURE LEFT HALF..COMBINING CYRILLIC TITLO RIGHT HALF
+FE52          ; Case_Ignorable # Po       SMALL FULL STOP
+FE55          ; Case_Ignorable # Po       SMALL COLON
+FEFF          ; Case_Ignorable # Cf       ZERO WIDTH NO-BREAK SPACE
+FF07          ; Case_Ignorable # Po       FULLWIDTH APOSTROPHE
+FF0E          ; Case_Ignorable # Po       FULLWIDTH FULL STOP
+FF1A          ; Case_Ignorable # Po       FULLWIDTH COLON
+FF3E          ; Case_Ignorable # Sk       FULLWIDTH CIRCUMFLEX ACCENT
+FF40          ; Case_Ignorable # Sk       FULLWIDTH GRAVE ACCENT
+FF70          ; Case_Ignorable # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF9E..FF9F    ; Case_Ignorable # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+FFE3          ; Case_Ignorable # Sk       FULLWIDTH MACRON
+FFF9..FFFB    ; Case_Ignorable # Cf   [3] INTERLINEAR ANNOTATION ANCHOR..INTERLINEAR ANNOTATION TERMINATOR
+101FD         ; Case_Ignorable # Mn       PHAISTOS DISC SIGN COMBINING OBLIQUE STROKE
+102E0         ; Case_Ignorable # Mn       COPTIC EPACT THOUSANDS MARK
+10376..1037A  ; Case_Ignorable # Mn   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10780..10785  ; Case_Ignorable # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; Case_Ignorable # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; Case_Ignorable # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10A01..10A03  ; Case_Ignorable # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; Case_Ignorable # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; Case_Ignorable # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A38..10A3A  ; Case_Ignorable # Mn   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
+10A3F         ; Case_Ignorable # Mn       KHAROSHTHI VIRAMA
+10AE5..10AE6  ; Case_Ignorable # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10D24..10D27  ; Case_Ignorable # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10EAB..10EAC  ; Case_Ignorable # Mn   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EFD..10EFF  ; Case_Ignorable # Mn   [3] ARABIC SMALL LOW WORD SAKTA..ARABIC SMALL LOW WORD MADDA
+10F46..10F50  ; Case_Ignorable # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
+10F82..10F85  ; Case_Ignorable # Mn   [4] OLD UYGHUR COMBINING DOT ABOVE..OLD UYGHUR COMBINING TWO DOTS BELOW
+11001         ; Case_Ignorable # Mn       BRAHMI SIGN ANUSVARA
+11038..11046  ; Case_Ignorable # Mn  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
+11070         ; Case_Ignorable # Mn       BRAHMI SIGN OLD TAMIL VIRAMA
+11073..11074  ; Case_Ignorable # Mn   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+1107F..11081  ; Case_Ignorable # Mn   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
+110B3..110B6  ; Case_Ignorable # Mn   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B9..110BA  ; Case_Ignorable # Mn   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
+110BD         ; Case_Ignorable # Cf       KAITHI NUMBER SIGN
+110C2         ; Case_Ignorable # Mn       KAITHI VOWEL SIGN VOCALIC R
+110CD         ; Case_Ignorable # Cf       KAITHI NUMBER SIGN ABOVE
+11100..11102  ; Case_Ignorable # Mn   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11127..1112B  ; Case_Ignorable # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112D..11134  ; Case_Ignorable # Mn   [8] CHAKMA VOWEL SIGN AI..CHAKMA MAAYYAA
+11173         ; Case_Ignorable # Mn       MAHAJANI SIGN NUKTA
+11180..11181  ; Case_Ignorable # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+111B6..111BE  ; Case_Ignorable # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111C9..111CC  ; Case_Ignorable # Mn   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
+111CF         ; Case_Ignorable # Mn       SHARADA SIGN INVERTED CANDRABINDU
+1122F..11231  ; Case_Ignorable # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11234         ; Case_Ignorable # Mn       KHOJKI SIGN ANUSVARA
+11236..11237  ; Case_Ignorable # Mn   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
+1123E         ; Case_Ignorable # Mn       KHOJKI SIGN SUKUN
+11241         ; Case_Ignorable # Mn       KHOJKI VOWEL SIGN VOCALIC R
+112DF         ; Case_Ignorable # Mn       KHUDAWADI SIGN ANUSVARA
+112E3..112EA  ; Case_Ignorable # Mn   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
+11300..11301  ; Case_Ignorable # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+1133B..1133C  ; Case_Ignorable # Mn   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
+11340         ; Case_Ignorable # Mn       GRANTHA VOWEL SIGN II
+11366..1136C  ; Case_Ignorable # Mn   [7] COMBINING GRANTHA DIGIT ZERO..COMBINING GRANTHA DIGIT SIX
+11370..11374  ; Case_Ignorable # Mn   [5] COMBINING GRANTHA LETTER A..COMBINING GRANTHA LETTER PA
+11438..1143F  ; Case_Ignorable # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11442..11444  ; Case_Ignorable # Mn   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
+11446         ; Case_Ignorable # Mn       NEWA SIGN NUKTA
+1145E         ; Case_Ignorable # Mn       NEWA SANDHI MARK
+114B3..114B8  ; Case_Ignorable # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114BA         ; Case_Ignorable # Mn       TIRHUTA VOWEL SIGN SHORT E
+114BF..114C0  ; Case_Ignorable # Mn   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C2..114C3  ; Case_Ignorable # Mn   [2] TIRHUTA SIGN VIRAMA..TIRHUTA SIGN NUKTA
+115B2..115B5  ; Case_Ignorable # Mn   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115BC..115BD  ; Case_Ignorable # Mn   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BF..115C0  ; Case_Ignorable # Mn   [2] SIDDHAM SIGN VIRAMA..SIDDHAM SIGN NUKTA
+115DC..115DD  ; Case_Ignorable # Mn   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11633..1163A  ; Case_Ignorable # Mn   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163D         ; Case_Ignorable # Mn       MODI SIGN ANUSVARA
+1163F..11640  ; Case_Ignorable # Mn   [2] MODI SIGN VIRAMA..MODI SIGN ARDHACANDRA
+116AB         ; Case_Ignorable # Mn       TAKRI SIGN ANUSVARA
+116AD         ; Case_Ignorable # Mn       TAKRI VOWEL SIGN AA
+116B0..116B5  ; Case_Ignorable # Mn   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B7         ; Case_Ignorable # Mn       TAKRI SIGN NUKTA
+1171D..1171F  ; Case_Ignorable # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11722..11725  ; Case_Ignorable # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11727..1172B  ; Case_Ignorable # Mn   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
+1182F..11837  ; Case_Ignorable # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11839..1183A  ; Case_Ignorable # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+1193B..1193C  ; Case_Ignorable # Mn   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193E         ; Case_Ignorable # Mn       DIVES AKURU VIRAMA
+11943         ; Case_Ignorable # Mn       DIVES AKURU SIGN NUKTA
+119D4..119D7  ; Case_Ignorable # Mn   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; Case_Ignorable # Mn   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119E0         ; Case_Ignorable # Mn       NANDINAGARI SIGN VIRAMA
+11A01..11A0A  ; Case_Ignorable # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A33..11A38  ; Case_Ignorable # Mn   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
+11A3B..11A3E  ; Case_Ignorable # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A47         ; Case_Ignorable # Mn       ZANABAZAR SQUARE SUBJOINER
+11A51..11A56  ; Case_Ignorable # Mn   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A59..11A5B  ; Case_Ignorable # Mn   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A8A..11A96  ; Case_Ignorable # Mn  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A98..11A99  ; Case_Ignorable # Mn   [2] SOYOMBO GEMINATION MARK..SOYOMBO SUBJOINER
+11C30..11C36  ; Case_Ignorable # Mn   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; Case_Ignorable # Mn   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3F         ; Case_Ignorable # Mn       BHAIKSUKI SIGN VIRAMA
+11C92..11CA7  ; Case_Ignorable # Mn  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CAA..11CB0  ; Case_Ignorable # Mn   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB2..11CB3  ; Case_Ignorable # Mn   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB5..11CB6  ; Case_Ignorable # Mn   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D31..11D36  ; Case_Ignorable # Mn   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; Case_Ignorable # Mn       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; Case_Ignorable # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D45  ; Case_Ignorable # Mn   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
+11D47         ; Case_Ignorable # Mn       MASARAM GONDI RA-KARA
+11D90..11D91  ; Case_Ignorable # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D95         ; Case_Ignorable # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D97         ; Case_Ignorable # Mn       GUNJALA GONDI VIRAMA
+11EF3..11EF4  ; Case_Ignorable # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11F00..11F01  ; Case_Ignorable # Mn   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F36..11F3A  ; Case_Ignorable # Mn   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F40         ; Case_Ignorable # Mn       KAWI VOWEL SIGN EU
+11F42         ; Case_Ignorable # Mn       KAWI CONJOINER
+13430..1343F  ; Case_Ignorable # Cf  [16] EGYPTIAN HIEROGLYPH VERTICAL JOINER..EGYPTIAN HIEROGLYPH END WALLED ENCLOSURE
+13440         ; Case_Ignorable # Mn       EGYPTIAN HIEROGLYPH MIRROR HORIZONTALLY
+13447..13455  ; Case_Ignorable # Mn  [15] EGYPTIAN HIEROGLYPH MODIFIER DAMAGED AT TOP START..EGYPTIAN HIEROGLYPH MODIFIER DAMAGED
+16AF0..16AF4  ; Case_Ignorable # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
+16B30..16B36  ; Case_Ignorable # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
+16B40..16B43  ; Case_Ignorable # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16F4F         ; Case_Ignorable # Mn       MIAO SIGN CONSONANT MODIFIER BAR
+16F8F..16F92  ; Case_Ignorable # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16F93..16F9F  ; Case_Ignorable # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; Case_Ignorable # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; Case_Ignorable # Lm       OLD CHINESE ITERATION MARK
+16FE4         ; Case_Ignorable # Mn       KHITAN SMALL SCRIPT FILLER
+1AFF0..1AFF3  ; Case_Ignorable # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; Case_Ignorable # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; Case_Ignorable # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1BC9D..1BC9E  ; Case_Ignorable # Mn   [2] DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUBLE MARK
+1BCA0..1BCA3  ; Case_Ignorable # Cf   [4] SHORTHAND FORMAT LETTER OVERLAP..SHORTHAND FORMAT UP STEP
+1CF00..1CF2D  ; Case_Ignorable # Mn  [46] ZNAMENNY COMBINING MARK GORAZDO NIZKO S KRYZHEM ON LEFT..ZNAMENNY COMBINING MARK KRYZH ON LEFT
+1CF30..1CF46  ; Case_Ignorable # Mn  [23] ZNAMENNY COMBINING TONAL RANGE MARK MRACHNO..ZNAMENNY PRIZNAK MODIFIER ROG
+1D167..1D169  ; Case_Ignorable # Mn   [3] MUSICAL SYMBOL COMBINING TREMOLO-1..MUSICAL SYMBOL COMBINING TREMOLO-3
+1D173..1D17A  ; Case_Ignorable # Cf   [8] MUSICAL SYMBOL BEGIN BEAM..MUSICAL SYMBOL END PHRASE
+1D17B..1D182  ; Case_Ignorable # Mn   [8] MUSICAL SYMBOL COMBINING ACCENT..MUSICAL SYMBOL COMBINING LOURE
+1D185..1D18B  ; Case_Ignorable # Mn   [7] MUSICAL SYMBOL COMBINING DOIT..MUSICAL SYMBOL COMBINING TRIPLE TONGUE
+1D1AA..1D1AD  ; Case_Ignorable # Mn   [4] MUSICAL SYMBOL COMBINING DOWN BOW..MUSICAL SYMBOL COMBINING SNAP PIZZICATO
+1D242..1D244  ; Case_Ignorable # Mn   [3] COMBINING GREEK MUSICAL TRISEME..COMBINING GREEK MUSICAL PENTASEME
+1DA00..1DA36  ; Case_Ignorable # Mn  [55] SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING IN
+1DA3B..1DA6C  ; Case_Ignorable # Mn  [50] SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
+1DA75         ; Case_Ignorable # Mn       SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
+1DA84         ; Case_Ignorable # Mn       SIGNWRITING LOCATION HEAD NECK
+1DA9B..1DA9F  ; Case_Ignorable # Mn   [5] SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL MODIFIER-6
+1DAA1..1DAAF  ; Case_Ignorable # Mn  [15] SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING ROTATION MODIFIER-16
+1E000..1E006  ; Case_Ignorable # Mn   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; Case_Ignorable # Mn  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; Case_Ignorable # Mn   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; Case_Ignorable # Mn   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; Case_Ignorable # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E030..1E06D  ; Case_Ignorable # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E08F         ; Case_Ignorable # Mn       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E130..1E136  ; Case_Ignorable # Mn   [7] NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACHUE HMONG TONE-D
+1E137..1E13D  ; Case_Ignorable # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E2AE         ; Case_Ignorable # Mn       TOTO SIGN RISING TONE
+1E2EC..1E2EF  ; Case_Ignorable # Mn   [4] WANCHO TONE TUP..WANCHO TONE KOINI
+1E4EB         ; Case_Ignorable # Lm       NAG MUNDARI SIGN OJOD
+1E4EC..1E4EF  ; Case_Ignorable # Mn   [4] NAG MUNDARI SIGN MUHOR..NAG MUNDARI SIGN SUTUH
+1E8D0..1E8D6  ; Case_Ignorable # Mn   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
+1E944..1E94A  ; Case_Ignorable # Mn   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+1E94B         ; Case_Ignorable # Lm       ADLAM NASALIZATION MARK
+1F3FB..1F3FF  ; Case_Ignorable # Sk   [5] EMOJI MODIFIER FITZPATRICK TYPE-1-2..EMOJI MODIFIER FITZPATRICK TYPE-6
+E0001         ; Case_Ignorable # Cf       LANGUAGE TAG
+E0020..E007F  ; Case_Ignorable # Cf  [96] TAG SPACE..CANCEL TAG
+E0100..E01EF  ; Case_Ignorable # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+
+# Total code points: 2707
+
+# ================================================
+
+# Derived Property:   Changes_When_Lowercased (CWL)
+#  Characters whose normalized forms are not stable under a toLowercase mapping.
+#  For more information, see D139 in Section 3.13, "Default Case Algorithms".
+#  Changes_When_Lowercased(X) is true when toLowercase(toNFD(X)) != toNFD(X)
+
+0041..005A    ; Changes_When_Lowercased # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+00C0..00D6    ; Changes_When_Lowercased # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00DE    ; Changes_When_Lowercased # L&   [7] LATIN CAPITAL LETTER O WITH STROKE..LATIN CAPITAL LETTER THORN
+0100          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH MACRON
+0102          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH BREVE
+0104          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH OGONEK
+0106          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER C WITH ACUTE
+0108          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER C WITH CIRCUMFLEX
+010A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER C WITH DOT ABOVE
+010C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER C WITH CARON
+010E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH CARON
+0110          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH STROKE
+0112          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH MACRON
+0114          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH BREVE
+0116          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH DOT ABOVE
+0118          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH OGONEK
+011A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CARON
+011C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH CIRCUMFLEX
+011E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH BREVE
+0120          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH DOT ABOVE
+0122          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH CEDILLA
+0124          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH CIRCUMFLEX
+0126          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH STROKE
+0128          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH TILDE
+012A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH MACRON
+012C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH BREVE
+012E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH OGONEK
+0130          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH DOT ABOVE
+0132          ; Changes_When_Lowercased # L&       LATIN CAPITAL LIGATURE IJ
+0134          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER J WITH CIRCUMFLEX
+0136          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH CEDILLA
+0139          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH ACUTE
+013B          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH CEDILLA
+013D          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH CARON
+013F          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH MIDDLE DOT
+0141          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH STROKE
+0143          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH ACUTE
+0145          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH CEDILLA
+0147          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH CARON
+014A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER ENG
+014C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH MACRON
+014E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH BREVE
+0150          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
+0152          ; Changes_When_Lowercased # L&       LATIN CAPITAL LIGATURE OE
+0154          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH ACUTE
+0156          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH CEDILLA
+0158          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH CARON
+015A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH ACUTE
+015C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH CIRCUMFLEX
+015E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH CEDILLA
+0160          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH CARON
+0162          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH CEDILLA
+0164          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH CARON
+0166          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH STROKE
+0168          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH TILDE
+016A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH MACRON
+016C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH BREVE
+016E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH RING ABOVE
+0170          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
+0172          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH OGONEK
+0174          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH CIRCUMFLEX
+0176          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH CIRCUMFLEX
+0178..0179    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER Y WITH DIAERESIS..LATIN CAPITAL LETTER Z WITH ACUTE
+017B          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH DOT ABOVE
+017D          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH CARON
+0181..0182    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER B WITH HOOK..LATIN CAPITAL LETTER B WITH TOPBAR
+0184          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER TONE SIX
+0186..0187    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER OPEN O..LATIN CAPITAL LETTER C WITH HOOK
+0189..018B    ; Changes_When_Lowercased # L&   [3] LATIN CAPITAL LETTER AFRICAN D..LATIN CAPITAL LETTER D WITH TOPBAR
+018E..0191    ; Changes_When_Lowercased # L&   [4] LATIN CAPITAL LETTER REVERSED E..LATIN CAPITAL LETTER F WITH HOOK
+0193..0194    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER G WITH HOOK..LATIN CAPITAL LETTER GAMMA
+0196..0198    ; Changes_When_Lowercased # L&   [3] LATIN CAPITAL LETTER IOTA..LATIN CAPITAL LETTER K WITH HOOK
+019C..019D    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER TURNED M..LATIN CAPITAL LETTER N WITH LEFT HOOK
+019F..01A0    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER O WITH MIDDLE TILDE..LATIN CAPITAL LETTER O WITH HORN
+01A2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER OI
+01A4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER P WITH HOOK
+01A6..01A7    ; Changes_When_Lowercased # L&   [2] LATIN LETTER YR..LATIN CAPITAL LETTER TONE TWO
+01A9          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER ESH
+01AC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH HOOK
+01AE..01AF    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER T WITH RETROFLEX HOOK..LATIN CAPITAL LETTER U WITH HORN
+01B1..01B3    ; Changes_When_Lowercased # L&   [3] LATIN CAPITAL LETTER UPSILON..LATIN CAPITAL LETTER Y WITH HOOK
+01B5          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH STROKE
+01B7..01B8    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER EZH..LATIN CAPITAL LETTER EZH REVERSED
+01BC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER TONE FIVE
+01C4..01C5    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER DZ WITH CARON..LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON
+01C7..01C8    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER LJ..LATIN CAPITAL LETTER L WITH SMALL LETTER J
+01CA..01CB    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER NJ..LATIN CAPITAL LETTER N WITH SMALL LETTER J
+01CD          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH CARON
+01CF          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH CARON
+01D1          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH CARON
+01D3          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH CARON
+01D5          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND MACRON
+01D7          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND ACUTE
+01D9          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND CARON
+01DB          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND GRAVE
+01DE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH DIAERESIS AND MACRON
+01E0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH DOT ABOVE AND MACRON
+01E2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AE WITH MACRON
+01E4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH STROKE
+01E6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH CARON
+01E8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH CARON
+01EA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH OGONEK
+01EC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH OGONEK AND MACRON
+01EE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER EZH WITH CARON
+01F1..01F2    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER DZ..LATIN CAPITAL LETTER D WITH SMALL LETTER Z
+01F4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH ACUTE
+01F6..01F8    ; Changes_When_Lowercased # L&   [3] LATIN CAPITAL LETTER HWAIR..LATIN CAPITAL LETTER N WITH GRAVE
+01FA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH RING ABOVE AND ACUTE
+01FC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AE WITH ACUTE
+01FE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH STROKE AND ACUTE
+0200          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH DOUBLE GRAVE
+0202          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH INVERTED BREVE
+0204          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH DOUBLE GRAVE
+0206          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH INVERTED BREVE
+0208          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH DOUBLE GRAVE
+020A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH INVERTED BREVE
+020C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH DOUBLE GRAVE
+020E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH INVERTED BREVE
+0210          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH DOUBLE GRAVE
+0212          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH INVERTED BREVE
+0214          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DOUBLE GRAVE
+0216          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH INVERTED BREVE
+0218          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH COMMA BELOW
+021A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH COMMA BELOW
+021C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER YOGH
+021E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH CARON
+0220          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH LONG RIGHT LEG
+0222          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER OU
+0224          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH HOOK
+0226          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH DOT ABOVE
+0228          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CEDILLA
+022A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH DIAERESIS AND MACRON
+022C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH TILDE AND MACRON
+022E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH DOT ABOVE
+0230          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH DOT ABOVE AND MACRON
+0232          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH MACRON
+023A..023B    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER A WITH STROKE..LATIN CAPITAL LETTER C WITH STROKE
+023D..023E    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER L WITH BAR..LATIN CAPITAL LETTER T WITH DIAGONAL STROKE
+0241          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER GLOTTAL STOP
+0243..0246    ; Changes_When_Lowercased # L&   [4] LATIN CAPITAL LETTER B WITH STROKE..LATIN CAPITAL LETTER E WITH STROKE
+0248          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER J WITH STROKE
+024A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER SMALL Q WITH HOOK TAIL
+024C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH STROKE
+024E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH STROKE
+0370          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER HETA
+0372          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER ARCHAIC SAMPI
+0376          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA
+037F          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER YOT
+0386          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Changes_When_Lowercased # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..038F    ; Changes_When_Lowercased # L&   [2] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER OMEGA WITH TONOS
+0391..03A1    ; Changes_When_Lowercased # L&  [17] GREEK CAPITAL LETTER ALPHA..GREEK CAPITAL LETTER RHO
+03A3..03AB    ; Changes_When_Lowercased # L&   [9] GREEK CAPITAL LETTER SIGMA..GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA
+03CF          ; Changes_When_Lowercased # L&       GREEK CAPITAL KAI SYMBOL
+03D8          ; Changes_When_Lowercased # L&       GREEK LETTER ARCHAIC KOPPA
+03DA          ; Changes_When_Lowercased # L&       GREEK LETTER STIGMA
+03DC          ; Changes_When_Lowercased # L&       GREEK LETTER DIGAMMA
+03DE          ; Changes_When_Lowercased # L&       GREEK LETTER KOPPA
+03E0          ; Changes_When_Lowercased # L&       GREEK LETTER SAMPI
+03E2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER SHEI
+03E4          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER FEI
+03E6          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER KHEI
+03E8          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER HORI
+03EA          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER GANGIA
+03EC          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER SHIMA
+03EE          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER DEI
+03F4          ; Changes_When_Lowercased # L&       GREEK CAPITAL THETA SYMBOL
+03F7          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER SHO
+03F9..03FA    ; Changes_When_Lowercased # L&   [2] GREEK CAPITAL LUNATE SIGMA SYMBOL..GREEK CAPITAL LETTER SAN
+03FD..042F    ; Changes_When_Lowercased # L&  [51] GREEK CAPITAL REVERSED LUNATE SIGMA SYMBOL..CYRILLIC CAPITAL LETTER YA
+0460          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER OMEGA
+0462          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER YAT
+0464          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTIFIED E
+0466          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER LITTLE YUS
+0468          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTIFIED LITTLE YUS
+046A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BIG YUS
+046C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTIFIED BIG YUS
+046E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KSI
+0470          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER PSI
+0472          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER FITA
+0474          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IZHITSA
+0476          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0478          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER UK
+047A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ROUND OMEGA
+047C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER OMEGA WITH TITLO
+047E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER OT
+0480          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOPPA
+048A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SHORT I WITH TAIL
+048C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SEMISOFT SIGN
+048E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ER WITH TICK
+0490          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER GHE WITH UPTURN
+0492          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER GHE WITH STROKE
+0494          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER GHE WITH MIDDLE HOOK
+0496          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ZHE WITH DESCENDER
+0498          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ZE WITH DESCENDER
+049A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KA WITH DESCENDER
+049C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KA WITH VERTICAL STROKE
+049E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KA WITH STROKE
+04A0          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BASHKIR KA
+04A2          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EN WITH DESCENDER
+04A4          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LIGATURE EN GHE
+04A6          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER PE WITH MIDDLE HOOK
+04A8          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ABKHASIAN HA
+04AA          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ES WITH DESCENDER
+04AC          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER TE WITH DESCENDER
+04AE          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER STRAIGHT U
+04B0          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER STRAIGHT U WITH STROKE
+04B2          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER HA WITH DESCENDER
+04B4          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LIGATURE TE TSE
+04B6          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER CHE WITH DESCENDER
+04B8          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER CHE WITH VERTICAL STROKE
+04BA          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SHHA
+04BC          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ABKHASIAN CHE
+04BE          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ABKHASIAN CHE WITH DESCENDER
+04C0..04C1    ; Changes_When_Lowercased # L&   [2] CYRILLIC LETTER PALOCHKA..CYRILLIC CAPITAL LETTER ZHE WITH BREVE
+04C3          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KA WITH HOOK
+04C5          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EL WITH TAIL
+04C7          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EN WITH HOOK
+04C9          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EN WITH TAIL
+04CB          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KHAKASSIAN CHE
+04CD          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EM WITH TAIL
+04D0          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER A WITH BREVE
+04D2          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER A WITH DIAERESIS
+04D4          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LIGATURE A IE
+04D6          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IE WITH BREVE
+04D8          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SCHWA
+04DA          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SCHWA WITH DIAERESIS
+04DC          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ZHE WITH DIAERESIS
+04DE          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ZE WITH DIAERESIS
+04E0          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ABKHASIAN DZE
+04E2          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER I WITH MACRON
+04E4          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER I WITH DIAERESIS
+04E6          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER O WITH DIAERESIS
+04E8          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BARRED O
+04EA          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BARRED O WITH DIAERESIS
+04EC          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER E WITH DIAERESIS
+04EE          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER U WITH MACRON
+04F0          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER U WITH DIAERESIS
+04F2          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER U WITH DOUBLE ACUTE
+04F4          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER CHE WITH DIAERESIS
+04F6          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER GHE WITH DESCENDER
+04F8          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER YERU WITH DIAERESIS
+04FA          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER GHE WITH STROKE AND HOOK
+04FC          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER HA WITH HOOK
+04FE          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER HA WITH STROKE
+0500          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI DE
+0502          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI DJE
+0504          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI ZJE
+0506          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI DZJE
+0508          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI LJE
+050A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI NJE
+050C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI SJE
+050E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER KOMI TJE
+0510          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER REVERSED ZE
+0512          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EL WITH HOOK
+0514          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER LHA
+0516          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER RHA
+0518          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER YAE
+051A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER QA
+051C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER WE
+051E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ALEUT KA
+0520          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EL WITH MIDDLE HOOK
+0522          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EN WITH MIDDLE HOOK
+0524          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER PE WITH DESCENDER
+0526          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SHHA WITH DESCENDER
+0528          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK
+052A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DZZHE
+052C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DCHE
+052E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER EL WITH DESCENDER
+0531..0556    ; Changes_When_Lowercased # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+10A0..10C5    ; Changes_When_Lowercased # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Changes_When_Lowercased # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Changes_When_Lowercased # L&       GEORGIAN CAPITAL LETTER AEN
+13A0..13F5    ; Changes_When_Lowercased # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+1C90..1CBA    ; Changes_When_Lowercased # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Changes_When_Lowercased # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1E00          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH RING BELOW
+1E02          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER B WITH DOT ABOVE
+1E04          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER B WITH DOT BELOW
+1E06          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER B WITH LINE BELOW
+1E08          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER C WITH CEDILLA AND ACUTE
+1E0A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH DOT ABOVE
+1E0C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH DOT BELOW
+1E0E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH LINE BELOW
+1E10          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH CEDILLA
+1E12          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER D WITH CIRCUMFLEX BELOW
+1E14          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH MACRON AND GRAVE
+1E16          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH MACRON AND ACUTE
+1E18          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX BELOW
+1E1A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH TILDE BELOW
+1E1C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CEDILLA AND BREVE
+1E1E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER F WITH DOT ABOVE
+1E20          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH MACRON
+1E22          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH DOT ABOVE
+1E24          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH DOT BELOW
+1E26          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH DIAERESIS
+1E28          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH CEDILLA
+1E2A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH BREVE BELOW
+1E2C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH TILDE BELOW
+1E2E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH DIAERESIS AND ACUTE
+1E30          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH ACUTE
+1E32          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH DOT BELOW
+1E34          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH LINE BELOW
+1E36          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH DOT BELOW
+1E38          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH DOT BELOW AND MACRON
+1E3A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH LINE BELOW
+1E3C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH CIRCUMFLEX BELOW
+1E3E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER M WITH ACUTE
+1E40          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER M WITH DOT ABOVE
+1E42          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER M WITH DOT BELOW
+1E44          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH DOT ABOVE
+1E46          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH DOT BELOW
+1E48          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH LINE BELOW
+1E4A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH CIRCUMFLEX BELOW
+1E4C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH TILDE AND ACUTE
+1E4E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH TILDE AND DIAERESIS
+1E50          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH MACRON AND GRAVE
+1E52          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH MACRON AND ACUTE
+1E54          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER P WITH ACUTE
+1E56          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER P WITH DOT ABOVE
+1E58          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH DOT ABOVE
+1E5A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH DOT BELOW
+1E5C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH DOT BELOW AND MACRON
+1E5E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH LINE BELOW
+1E60          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH DOT ABOVE
+1E62          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH DOT BELOW
+1E64          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH ACUTE AND DOT ABOVE
+1E66          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH CARON AND DOT ABOVE
+1E68          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH DOT ABOVE
+1E6C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH DOT BELOW
+1E6E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH LINE BELOW
+1E70          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER T WITH CIRCUMFLEX BELOW
+1E72          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DIAERESIS BELOW
+1E74          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH TILDE BELOW
+1E76          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH CIRCUMFLEX BELOW
+1E78          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH TILDE AND ACUTE
+1E7A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH MACRON AND DIAERESIS
+1E7C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER V WITH TILDE
+1E7E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER V WITH DOT BELOW
+1E80          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH GRAVE
+1E82          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH ACUTE
+1E84          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH DIAERESIS
+1E86          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH DOT ABOVE
+1E88          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH DOT BELOW
+1E8A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER X WITH DOT ABOVE
+1E8C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER X WITH DIAERESIS
+1E8E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH DOT ABOVE
+1E90          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH CIRCUMFLEX
+1E92          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH DOT BELOW
+1E94          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH LINE BELOW
+1E9E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER SHARP S
+1EA0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH DOT BELOW
+1EA2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH HOOK ABOVE
+1EA4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH BREVE AND ACUTE
+1EB0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH BREVE AND GRAVE
+1EB2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH BREVE AND HOOK ABOVE
+1EB4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH BREVE AND TILDE
+1EB6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER A WITH BREVE AND DOT BELOW
+1EB8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH DOT BELOW
+1EBA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH HOOK ABOVE
+1EBC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH TILDE
+1EBE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH HOOK ABOVE
+1ECA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER I WITH DOT BELOW
+1ECC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH DOT BELOW
+1ECE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH HOOK ABOVE
+1ED0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH HORN AND ACUTE
+1EDC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH HORN AND GRAVE
+1EDE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH HORN AND HOOK ABOVE
+1EE0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH HORN AND TILDE
+1EE2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH HORN AND DOT BELOW
+1EE4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH DOT BELOW
+1EE6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH HOOK ABOVE
+1EE8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH HORN AND ACUTE
+1EEA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH HORN AND GRAVE
+1EEC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH HORN AND HOOK ABOVE
+1EEE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH HORN AND TILDE
+1EF0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH HORN AND DOT BELOW
+1EF2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH GRAVE
+1EF4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH DOT BELOW
+1EF6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH HOOK ABOVE
+1EF8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH TILDE
+1EFA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER MIDDLE-WELSH LL
+1EFC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER MIDDLE-WELSH V
+1EFE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Y WITH LOOP
+1F08..1F0F    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER ALPHA WITH PSILI..GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F18..1F1D    ; Changes_When_Lowercased # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F28..1F2F    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER ETA WITH PSILI..GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI
+1F38..1F3F    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER IOTA WITH PSILI..GREEK CAPITAL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F48..1F4D    ; Changes_When_Lowercased # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F59          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F          ; Changes_When_Lowercased # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F68..1F6F    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER OMEGA WITH PSILI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1F88..1F8F    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER ALPHA WITH PSILI AND PROSGEGRAMMENI..GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1F98..1F9F    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER ETA WITH PSILI AND PROSGEGRAMMENI..GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1FA8..1FAF    ; Changes_When_Lowercased # L&   [8] GREEK CAPITAL LETTER OMEGA WITH PSILI AND PROSGEGRAMMENI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1FB8..1FBC    ; Changes_When_Lowercased # L&   [5] GREEK CAPITAL LETTER ALPHA WITH VRACHY..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FC8..1FCC    ; Changes_When_Lowercased # L&   [5] GREEK CAPITAL LETTER EPSILON WITH VARIA..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD8..1FDB    ; Changes_When_Lowercased # L&   [4] GREEK CAPITAL LETTER IOTA WITH VRACHY..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE8..1FEC    ; Changes_When_Lowercased # L&   [5] GREEK CAPITAL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF8..1FFC    ; Changes_When_Lowercased # L&   [5] GREEK CAPITAL LETTER OMICRON WITH VARIA..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2126          ; Changes_When_Lowercased # L&       OHM SIGN
+212A..212B    ; Changes_When_Lowercased # L&   [2] KELVIN SIGN..ANGSTROM SIGN
+2132          ; Changes_When_Lowercased # L&       TURNED CAPITAL F
+2160..216F    ; Changes_When_Lowercased # Nl  [16] ROMAN NUMERAL ONE..ROMAN NUMERAL ONE THOUSAND
+2183          ; Changes_When_Lowercased # L&       ROMAN NUMERAL REVERSED ONE HUNDRED
+24B6..24CF    ; Changes_When_Lowercased # So  [26] CIRCLED LATIN CAPITAL LETTER A..CIRCLED LATIN CAPITAL LETTER Z
+2C00..2C2F    ; Changes_When_Lowercased # L&  [48] GLAGOLITIC CAPITAL LETTER AZU..GLAGOLITIC CAPITAL LETTER CAUDATE CHRIVI
+2C60          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH DOUBLE BAR
+2C62..2C64    ; Changes_When_Lowercased # L&   [3] LATIN CAPITAL LETTER L WITH MIDDLE TILDE..LATIN CAPITAL LETTER R WITH TAIL
+2C67          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER H WITH DESCENDER
+2C69          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH DESCENDER
+2C6B          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Z WITH DESCENDER
+2C6D..2C70    ; Changes_When_Lowercased # L&   [4] LATIN CAPITAL LETTER ALPHA..LATIN CAPITAL LETTER TURNED ALPHA
+2C72          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER W WITH HOOK
+2C75          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER HALF H
+2C7E..2C80    ; Changes_When_Lowercased # L&   [3] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC CAPITAL LETTER ALFA
+2C82          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER VIDA
+2C84          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER GAMMA
+2C86          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER DALDA
+2C88          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER EIE
+2C8A          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER SOU
+2C8C          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER ZATA
+2C8E          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER HATE
+2C90          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER THETHE
+2C92          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER IAUDA
+2C94          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER KAPA
+2C96          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER LAULA
+2C98          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER MI
+2C9A          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER NI
+2C9C          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER KSI
+2C9E          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER O
+2CA0          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER PI
+2CA2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER RO
+2CA4          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER SIMA
+2CA6          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER TAU
+2CA8          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER UA
+2CAA          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER FI
+2CAC          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER KHI
+2CAE          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER PSI
+2CB0          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OOU
+2CB2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER DIALECT-P ALEF
+2CB4          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC AIN
+2CB6          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC EIE
+2CB8          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER DIALECT-P KAPA
+2CBA          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER DIALECT-P NI
+2CBC          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC NI
+2CBE          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC OOU
+2CC0          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER SAMPI
+2CC2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER CROSSED SHEI
+2CC4          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC SHEI
+2CC6          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC ESH
+2CC8          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER AKHMIMIC KHEI
+2CCA          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER DIALECT-P HORI
+2CCC          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC HORI
+2CCE          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC HA
+2CD0          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER L-SHAPED HA
+2CD2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC HEI
+2CD4          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC HAT
+2CD6          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC GANGIA
+2CD8          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC DJA
+2CDA          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD COPTIC SHIMA
+2CDC          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD NUBIAN SHIMA
+2CDE          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD NUBIAN NGI
+2CE0          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD NUBIAN NYI
+2CE2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER OLD NUBIAN WAU
+2CEB          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI
+2CED          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC GANGIA
+2CF2          ; Changes_When_Lowercased # L&       COPTIC CAPITAL LETTER BOHAIRIC KHEI
+A640          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ZEMLYA
+A642          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DZELO
+A644          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER REVERSED DZE
+A646          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTA
+A648          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DJERV
+A64A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER MONOGRAPH UK
+A64C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BROAD OMEGA
+A64E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER NEUTRAL YER
+A650          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER YERU WITH BACK YER
+A652          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTIFIED YAT
+A654          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER REVERSED YU
+A656          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTIFIED A
+A658          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER CLOSED LITTLE YUS
+A65A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BLENDED YUS
+A65C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER IOTIFIED CLOSED LITTLE YUS
+A65E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER YN
+A660          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER REVERSED TSE
+A662          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SOFT DE
+A664          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SOFT EL
+A666          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SOFT EM
+A668          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER MONOCULAR O
+A66A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER BINOCULAR O
+A66C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DOUBLE MONOCULAR O
+A680          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DWE
+A682          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DZWE
+A684          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER ZHWE
+A686          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER CCHE
+A688          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DZZE
+A68A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER TE WITH MIDDLE HOOK
+A68C          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER TWE
+A68E          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER TSWE
+A690          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER TSSE
+A692          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER TCHE
+A694          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER HWE
+A696          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER SHWE
+A698          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER DOUBLE O
+A69A          ; Changes_When_Lowercased # L&       CYRILLIC CAPITAL LETTER CROSSED O
+A722          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF
+A724          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER EGYPTOLOGICAL AIN
+A726          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER HENG
+A728          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER TZ
+A72A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER TRESILLO
+A72C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER CUATRILLO
+A72E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER CUATRILLO WITH COMMA
+A732          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AA
+A734          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AO
+A736          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AU
+A738          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AV
+A73A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AV WITH HORIZONTAL BAR
+A73C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER AY
+A73E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER REVERSED C WITH DOT
+A740          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH STROKE
+A742          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH DIAGONAL STROKE
+A744          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH STROKE AND DIAGONAL STROKE
+A746          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER BROKEN L
+A748          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER L WITH HIGH STROKE
+A74A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH LONG STROKE OVERLAY
+A74C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER O WITH LOOP
+A74E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER OO
+A750          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER P WITH STROKE THROUGH DESCENDER
+A752          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER P WITH FLOURISH
+A754          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER P WITH SQUIRREL TAIL
+A756          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Q WITH STROKE THROUGH DESCENDER
+A758          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER Q WITH DIAGONAL STROKE
+A75A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R ROTUNDA
+A75C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER RUM ROTUNDA
+A75E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER V WITH DIAGONAL STROKE
+A760          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER VY
+A762          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER VISIGOTHIC Z
+A764          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER THORN WITH STROKE
+A766          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER THORN WITH STROKE THROUGH DESCENDER
+A768          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER VEND
+A76A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER ET
+A76C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER IS
+A76E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER CON
+A779          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER INSULAR D
+A77B          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER INSULAR F
+A77D..A77E    ; Changes_When_Lowercased # L&   [2] LATIN CAPITAL LETTER INSULAR G..LATIN CAPITAL LETTER TURNED INSULAR G
+A780          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER TURNED L
+A782          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER INSULAR R
+A784          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER INSULAR S
+A786          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER INSULAR T
+A78B          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER SALTILLO
+A78D          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER TURNED H
+A790          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH DESCENDER
+A792          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER C WITH BAR
+A796          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER B WITH FLOURISH
+A798          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER F WITH STROKE
+A79A          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER VOLAPUK AE
+A79C          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER VOLAPUK OE
+A79E          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER VOLAPUK UE
+A7A0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER G WITH OBLIQUE STROKE
+A7A2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER K WITH OBLIQUE STROKE
+A7A4          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER N WITH OBLIQUE STROKE
+A7A6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER R WITH OBLIQUE STROKE
+A7A8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH OBLIQUE STROKE
+A7AA..A7AE    ; Changes_When_Lowercased # L&   [5] LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPITAL LETTER SMALL CAPITAL I
+A7B0..A7B4    ; Changes_When_Lowercased # L&   [5] LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL LETTER BETA
+A7B6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER OMEGA
+A7B8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER U WITH STROKE
+A7BA          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER GLOTTAL A
+A7BC          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER GLOTTAL I
+A7BE          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER GLOTTAL U
+A7C0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER OLD POLISH O
+A7C2          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER ANGLICANA W
+A7C4..A7C7    ; Changes_When_Lowercased # L&   [4] LATIN CAPITAL LETTER C WITH PALATAL HOOK..LATIN CAPITAL LETTER D WITH SHORT STROKE OVERLAY
+A7C9          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER S WITH SHORT STROKE OVERLAY
+A7D0          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER CLOSED INSULAR G
+A7D6          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER MIDDLE SCOTS S
+A7D8          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER SIGMOID S
+A7F5          ; Changes_When_Lowercased # L&       LATIN CAPITAL LETTER REVERSED HALF H
+FF21..FF3A    ; Changes_When_Lowercased # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+10400..10427  ; Changes_When_Lowercased # L&  [40] DESERET CAPITAL LETTER LONG I..DESERET CAPITAL LETTER EW
+104B0..104D3  ; Changes_When_Lowercased # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+10570..1057A  ; Changes_When_Lowercased # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Changes_When_Lowercased # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Changes_When_Lowercased # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Changes_When_Lowercased # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10C80..10CB2  ; Changes_When_Lowercased # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+118A0..118BF  ; Changes_When_Lowercased # L&  [32] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI CAPITAL LETTER VIYO
+16E40..16E5F  ; Changes_When_Lowercased # L&  [32] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAPITAL LETTER Y
+1E900..1E921  ; Changes_When_Lowercased # L&  [34] ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETTER SHA
+
+# Total code points: 1433
+
+# ================================================
+
+# Derived Property:   Changes_When_Uppercased (CWU)
+#  Characters whose normalized forms are not stable under a toUppercase mapping.
+#  For more information, see D140 in Section 3.13, "Default Case Algorithms".
+#  Changes_When_Uppercased(X) is true when toUppercase(toNFD(X)) != toNFD(X)
+
+0061..007A    ; Changes_When_Uppercased # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00B5          ; Changes_When_Uppercased # L&       MICRO SIGN
+00DF..00F6    ; Changes_When_Uppercased # L&  [24] LATIN SMALL LETTER SHARP S..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..00FF    ; Changes_When_Uppercased # L&   [8] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER Y WITH DIAERESIS
+0101          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH MACRON
+0103          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH BREVE
+0105          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH OGONEK
+0107          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH ACUTE
+0109          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH CIRCUMFLEX
+010B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH DOT ABOVE
+010D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH CARON
+010F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH CARON
+0111          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH STROKE
+0113          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH MACRON
+0115          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH BREVE
+0117          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH DOT ABOVE
+0119          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH OGONEK
+011B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CARON
+011D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH CIRCUMFLEX
+011F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH BREVE
+0121          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH DOT ABOVE
+0123          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH CEDILLA
+0125          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH CIRCUMFLEX
+0127          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH STROKE
+0129          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH TILDE
+012B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH MACRON
+012D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH BREVE
+012F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH OGONEK
+0131          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER DOTLESS I
+0133          ; Changes_When_Uppercased # L&       LATIN SMALL LIGATURE IJ
+0135          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER J WITH CIRCUMFLEX
+0137          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH CEDILLA
+013A          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH ACUTE
+013C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH CEDILLA
+013E          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH CARON
+0140          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH MIDDLE DOT
+0142          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH STROKE
+0144          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH ACUTE
+0146          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH CEDILLA
+0148..0149    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER N WITH CARON..LATIN SMALL LETTER N PRECEDED BY APOSTROPHE
+014B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER ENG
+014D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH MACRON
+014F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH BREVE
+0151          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH DOUBLE ACUTE
+0153          ; Changes_When_Uppercased # L&       LATIN SMALL LIGATURE OE
+0155          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH ACUTE
+0157          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH CEDILLA
+0159          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH CARON
+015B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH ACUTE
+015D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH CIRCUMFLEX
+015F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH CEDILLA
+0161          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH CARON
+0163          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH CEDILLA
+0165          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH CARON
+0167          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH STROKE
+0169          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH TILDE
+016B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH MACRON
+016D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH BREVE
+016F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH RING ABOVE
+0171          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DOUBLE ACUTE
+0173          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH OGONEK
+0175          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH CIRCUMFLEX
+0177          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH CIRCUMFLEX
+017A          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH ACUTE
+017C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH DOT ABOVE
+017E..0180    ; Changes_When_Uppercased # L&   [3] LATIN SMALL LETTER Z WITH CARON..LATIN SMALL LETTER B WITH STROKE
+0183          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER B WITH TOPBAR
+0185          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TONE SIX
+0188          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH HOOK
+018C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH TOPBAR
+0192          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER F WITH HOOK
+0195          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER HV
+0199..019A    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER K WITH HOOK..LATIN SMALL LETTER L WITH BAR
+019E          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH LONG RIGHT LEG
+01A1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HORN
+01A3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER OI
+01A5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH HOOK
+01A8          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TONE TWO
+01AD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH HOOK
+01B0          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HORN
+01B4          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH HOOK
+01B6          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH STROKE
+01B9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER EZH REVERSED
+01BD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TONE FIVE
+01BF          ; Changes_When_Uppercased # L&       LATIN LETTER WYNN
+01C5..01C6    ; Changes_When_Uppercased # L&   [2] LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON..LATIN SMALL LETTER DZ WITH CARON
+01C8..01C9    ; Changes_When_Uppercased # L&   [2] LATIN CAPITAL LETTER L WITH SMALL LETTER J..LATIN SMALL LETTER LJ
+01CB..01CC    ; Changes_When_Uppercased # L&   [2] LATIN CAPITAL LETTER N WITH SMALL LETTER J..LATIN SMALL LETTER NJ
+01CE          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH CARON
+01D0          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH CARON
+01D2          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH CARON
+01D4          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH CARON
+01D6          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DIAERESIS AND MACRON
+01D8          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DIAERESIS AND ACUTE
+01DA          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DIAERESIS AND CARON
+01DC..01DD    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER U WITH DIAERESIS AND GRAVE..LATIN SMALL LETTER TURNED E
+01DF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH DIAERESIS AND MACRON
+01E1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH DOT ABOVE AND MACRON
+01E3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AE WITH MACRON
+01E5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH STROKE
+01E7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH CARON
+01E9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH CARON
+01EB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH OGONEK
+01ED          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH OGONEK AND MACRON
+01EF..01F0    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER EZH WITH CARON..LATIN SMALL LETTER J WITH CARON
+01F2..01F3    ; Changes_When_Uppercased # L&   [2] LATIN CAPITAL LETTER D WITH SMALL LETTER Z..LATIN SMALL LETTER DZ
+01F5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH ACUTE
+01F9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH GRAVE
+01FB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH RING ABOVE AND ACUTE
+01FD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AE WITH ACUTE
+01FF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH STROKE AND ACUTE
+0201          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH DOUBLE GRAVE
+0203          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH INVERTED BREVE
+0205          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH DOUBLE GRAVE
+0207          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH INVERTED BREVE
+0209          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH DOUBLE GRAVE
+020B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH INVERTED BREVE
+020D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH DOUBLE GRAVE
+020F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH INVERTED BREVE
+0211          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH DOUBLE GRAVE
+0213          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH INVERTED BREVE
+0215          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DOUBLE GRAVE
+0217          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH INVERTED BREVE
+0219          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH COMMA BELOW
+021B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH COMMA BELOW
+021D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER YOGH
+021F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH CARON
+0223          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER OU
+0225          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH HOOK
+0227          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH DOT ABOVE
+0229          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CEDILLA
+022B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH DIAERESIS AND MACRON
+022D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH TILDE AND MACRON
+022F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH DOT ABOVE
+0231          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH DOT ABOVE AND MACRON
+0233          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH MACRON
+023C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH STROKE
+023F..0240    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER S WITH SWASH TAIL..LATIN SMALL LETTER Z WITH SWASH TAIL
+0242          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER GLOTTAL STOP
+0247          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH STROKE
+0249          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER J WITH STROKE
+024B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Q WITH HOOK TAIL
+024D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH STROKE
+024F..0254    ; Changes_When_Uppercased # L&   [6] LATIN SMALL LETTER Y WITH STROKE..LATIN SMALL LETTER OPEN O
+0256..0257    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER D WITH TAIL..LATIN SMALL LETTER D WITH HOOK
+0259          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER SCHWA
+025B..025C    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER OPEN E..LATIN SMALL LETTER REVERSED OPEN E
+0260..0261    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER G WITH HOOK..LATIN SMALL LETTER SCRIPT G
+0263          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER GAMMA
+0265..0266    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER TURNED H..LATIN SMALL LETTER H WITH HOOK
+0268..026C    ; Changes_When_Uppercased # L&   [5] LATIN SMALL LETTER I WITH STROKE..LATIN SMALL LETTER L WITH BELT
+026F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TURNED M
+0271..0272    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER M WITH HOOK..LATIN SMALL LETTER N WITH LEFT HOOK
+0275          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER BARRED O
+027D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH TAIL
+0280          ; Changes_When_Uppercased # L&       LATIN LETTER SMALL CAPITAL R
+0282..0283    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER S WITH HOOK..LATIN SMALL LETTER ESH
+0287..028C    ; Changes_When_Uppercased # L&   [6] LATIN SMALL LETTER TURNED T..LATIN SMALL LETTER TURNED V
+0292          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER EZH
+029D..029E    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER J WITH CROSSED-TAIL..LATIN SMALL LETTER TURNED K
+0345          ; Changes_When_Uppercased # Mn       COMBINING GREEK YPOGEGRAMMENI
+0371          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER HETA
+0373          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER ARCHAIC SAMPI
+0377          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037B..037D    ; Changes_When_Uppercased # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+0390          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
+03AC..03CE    ; Changes_When_Uppercased # L&  [35] GREEK SMALL LETTER ALPHA WITH TONOS..GREEK SMALL LETTER OMEGA WITH TONOS
+03D0..03D1    ; Changes_When_Uppercased # L&   [2] GREEK BETA SYMBOL..GREEK THETA SYMBOL
+03D5..03D7    ; Changes_When_Uppercased # L&   [3] GREEK PHI SYMBOL..GREEK KAI SYMBOL
+03D9          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER ARCHAIC KOPPA
+03DB          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER STIGMA
+03DD          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER DIGAMMA
+03DF          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER KOPPA
+03E1          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER SAMPI
+03E3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER SHEI
+03E5          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER FEI
+03E7          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER KHEI
+03E9          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER HORI
+03EB          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER GANGIA
+03ED          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER SHIMA
+03EF..03F3    ; Changes_When_Uppercased # L&   [5] COPTIC SMALL LETTER DEI..GREEK LETTER YOT
+03F5          ; Changes_When_Uppercased # L&       GREEK LUNATE EPSILON SYMBOL
+03F8          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER SHO
+03FB          ; Changes_When_Uppercased # L&       GREEK SMALL LETTER SAN
+0430..045F    ; Changes_When_Uppercased # L&  [48] CYRILLIC SMALL LETTER A..CYRILLIC SMALL LETTER DZHE
+0461          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER OMEGA
+0463          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER YAT
+0465          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTIFIED E
+0467          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER LITTLE YUS
+0469          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTIFIED LITTLE YUS
+046B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BIG YUS
+046D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTIFIED BIG YUS
+046F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KSI
+0471          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER PSI
+0473          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER FITA
+0475          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IZHITSA
+0477          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0479          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER UK
+047B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ROUND OMEGA
+047D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER OMEGA WITH TITLO
+047F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER OT
+0481          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOPPA
+048B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SHORT I WITH TAIL
+048D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SEMISOFT SIGN
+048F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ER WITH TICK
+0491          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER GHE WITH UPTURN
+0493          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER GHE WITH STROKE
+0495          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER GHE WITH MIDDLE HOOK
+0497          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZHE WITH DESCENDER
+0499          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZE WITH DESCENDER
+049B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KA WITH DESCENDER
+049D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KA WITH VERTICAL STROKE
+049F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KA WITH STROKE
+04A1          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BASHKIR KA
+04A3          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EN WITH DESCENDER
+04A5          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LIGATURE EN GHE
+04A7          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER PE WITH MIDDLE HOOK
+04A9          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ABKHASIAN HA
+04AB          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ES WITH DESCENDER
+04AD          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER TE WITH DESCENDER
+04AF          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER STRAIGHT U
+04B1          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER STRAIGHT U WITH STROKE
+04B3          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER HA WITH DESCENDER
+04B5          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LIGATURE TE TSE
+04B7          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER CHE WITH DESCENDER
+04B9          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER CHE WITH VERTICAL STROKE
+04BB          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SHHA
+04BD          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ABKHASIAN CHE
+04BF          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ABKHASIAN CHE WITH DESCENDER
+04C2          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZHE WITH BREVE
+04C4          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KA WITH HOOK
+04C6          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EL WITH TAIL
+04C8          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EN WITH HOOK
+04CA          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EN WITH TAIL
+04CC          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KHAKASSIAN CHE
+04CE..04CF    ; Changes_When_Uppercased # L&   [2] CYRILLIC SMALL LETTER EM WITH TAIL..CYRILLIC SMALL LETTER PALOCHKA
+04D1          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER A WITH BREVE
+04D3          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER A WITH DIAERESIS
+04D5          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LIGATURE A IE
+04D7          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IE WITH BREVE
+04D9          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SCHWA
+04DB          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SCHWA WITH DIAERESIS
+04DD          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZHE WITH DIAERESIS
+04DF          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZE WITH DIAERESIS
+04E1          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ABKHASIAN DZE
+04E3          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER I WITH MACRON
+04E5          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER I WITH DIAERESIS
+04E7          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER O WITH DIAERESIS
+04E9          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BARRED O
+04EB          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BARRED O WITH DIAERESIS
+04ED          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER E WITH DIAERESIS
+04EF          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER U WITH MACRON
+04F1          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER U WITH DIAERESIS
+04F3          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER U WITH DOUBLE ACUTE
+04F5          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER CHE WITH DIAERESIS
+04F7          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER GHE WITH DESCENDER
+04F9          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER YERU WITH DIAERESIS
+04FB          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER GHE WITH STROKE AND HOOK
+04FD          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER HA WITH HOOK
+04FF          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER HA WITH STROKE
+0501          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI DE
+0503          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI DJE
+0505          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI ZJE
+0507          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI DZJE
+0509          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI LJE
+050B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI NJE
+050D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI SJE
+050F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER KOMI TJE
+0511          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER REVERSED ZE
+0513          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EL WITH HOOK
+0515          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER LHA
+0517          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER RHA
+0519          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER YAE
+051B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER QA
+051D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER WE
+051F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ALEUT KA
+0521          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EL WITH MIDDLE HOOK
+0523          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EN WITH MIDDLE HOOK
+0525          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER PE WITH DESCENDER
+0527          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SHHA WITH DESCENDER
+0529          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EN WITH LEFT HOOK
+052B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DZZHE
+052D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DCHE
+052F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER EL WITH DESCENDER
+0561..0587    ; Changes_When_Uppercased # L&  [39] ARMENIAN SMALL LETTER AYB..ARMENIAN SMALL LIGATURE ECH YIWN
+10D0..10FA    ; Changes_When_Uppercased # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FD..10FF    ; Changes_When_Uppercased # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+13F8..13FD    ; Changes_When_Uppercased # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Changes_When_Uppercased # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1D79          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER INSULAR G
+1D7D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH STROKE
+1D8E          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH PALATAL HOOK
+1E01          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH RING BELOW
+1E03          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER B WITH DOT ABOVE
+1E05          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER B WITH DOT BELOW
+1E07          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER B WITH LINE BELOW
+1E09          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER C WITH CEDILLA AND ACUTE
+1E0B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH DOT ABOVE
+1E0D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH DOT BELOW
+1E0F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH LINE BELOW
+1E11          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH CEDILLA
+1E13          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH CIRCUMFLEX BELOW
+1E15          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH MACRON AND GRAVE
+1E17          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH MACRON AND ACUTE
+1E19          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX BELOW
+1E1B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH TILDE BELOW
+1E1D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CEDILLA AND BREVE
+1E1F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER F WITH DOT ABOVE
+1E21          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH MACRON
+1E23          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH DOT ABOVE
+1E25          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH DOT BELOW
+1E27          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH DIAERESIS
+1E29          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH CEDILLA
+1E2B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH BREVE BELOW
+1E2D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH TILDE BELOW
+1E2F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH DIAERESIS AND ACUTE
+1E31          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH ACUTE
+1E33          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH DOT BELOW
+1E35          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH LINE BELOW
+1E37          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH DOT BELOW
+1E39          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH DOT BELOW AND MACRON
+1E3B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH LINE BELOW
+1E3D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH CIRCUMFLEX BELOW
+1E3F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER M WITH ACUTE
+1E41          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER M WITH DOT ABOVE
+1E43          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER M WITH DOT BELOW
+1E45          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH DOT ABOVE
+1E47          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH DOT BELOW
+1E49          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH LINE BELOW
+1E4B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH CIRCUMFLEX BELOW
+1E4D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH TILDE AND ACUTE
+1E4F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH TILDE AND DIAERESIS
+1E51          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH MACRON AND GRAVE
+1E53          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH MACRON AND ACUTE
+1E55          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH ACUTE
+1E57          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH DOT ABOVE
+1E59          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH DOT ABOVE
+1E5B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH DOT BELOW
+1E5D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH DOT BELOW AND MACRON
+1E5F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH LINE BELOW
+1E61          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH DOT ABOVE
+1E63          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH DOT BELOW
+1E65          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH ACUTE AND DOT ABOVE
+1E67          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH CARON AND DOT ABOVE
+1E69          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH DOT ABOVE
+1E6D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH DOT BELOW
+1E6F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH LINE BELOW
+1E71          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER T WITH CIRCUMFLEX BELOW
+1E73          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DIAERESIS BELOW
+1E75          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH TILDE BELOW
+1E77          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH CIRCUMFLEX BELOW
+1E79          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH TILDE AND ACUTE
+1E7B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH MACRON AND DIAERESIS
+1E7D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER V WITH TILDE
+1E7F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER V WITH DOT BELOW
+1E81          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH GRAVE
+1E83          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH ACUTE
+1E85          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH DIAERESIS
+1E87          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH DOT ABOVE
+1E89          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH DOT BELOW
+1E8B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER X WITH DOT ABOVE
+1E8D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER X WITH DIAERESIS
+1E8F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH DOT ABOVE
+1E91          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH CIRCUMFLEX
+1E93          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH DOT BELOW
+1E95..1E9B    ; Changes_When_Uppercased # L&   [7] LATIN SMALL LETTER Z WITH LINE BELOW..LATIN SMALL LETTER LONG S WITH DOT ABOVE
+1EA1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH DOT BELOW
+1EA3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH HOOK ABOVE
+1EA5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH BREVE AND ACUTE
+1EB1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH BREVE AND GRAVE
+1EB3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH BREVE AND HOOK ABOVE
+1EB5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH BREVE AND TILDE
+1EB7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER A WITH BREVE AND DOT BELOW
+1EB9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH DOT BELOW
+1EBB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH HOOK ABOVE
+1EBD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH TILDE
+1EBF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH HOOK ABOVE
+1ECB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER I WITH DOT BELOW
+1ECD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH DOT BELOW
+1ECF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HOOK ABOVE
+1ED1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HORN AND ACUTE
+1EDD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HORN AND GRAVE
+1EDF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HORN AND HOOK ABOVE
+1EE1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HORN AND TILDE
+1EE3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH HORN AND DOT BELOW
+1EE5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH DOT BELOW
+1EE7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HOOK ABOVE
+1EE9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HORN AND ACUTE
+1EEB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HORN AND GRAVE
+1EED          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HORN AND HOOK ABOVE
+1EEF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HORN AND TILDE
+1EF1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH HORN AND DOT BELOW
+1EF3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH GRAVE
+1EF5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH DOT BELOW
+1EF7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH HOOK ABOVE
+1EF9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Y WITH TILDE
+1EFB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER MIDDLE-WELSH LL
+1EFD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER MIDDLE-WELSH V
+1EFF..1F07    ; Changes_When_Uppercased # L&   [9] LATIN SMALL LETTER Y WITH LOOP..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F10..1F15    ; Changes_When_Uppercased # L&   [6] GREEK SMALL LETTER EPSILON WITH PSILI..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F27    ; Changes_When_Uppercased # L&   [8] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI
+1F30..1F37    ; Changes_When_Uppercased # L&   [8] GREEK SMALL LETTER IOTA WITH PSILI..GREEK SMALL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F40..1F45    ; Changes_When_Uppercased # L&   [6] GREEK SMALL LETTER OMICRON WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Changes_When_Uppercased # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F60..1F67    ; Changes_When_Uppercased # L&   [8] GREEK SMALL LETTER OMEGA WITH PSILI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1F70..1F7D    ; Changes_When_Uppercased # L&  [14] GREEK SMALL LETTER ALPHA WITH VARIA..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; Changes_When_Uppercased # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FB7    ; Changes_When_Uppercased # L&   [2] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK SMALL LETTER ALPHA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FBC          ; Changes_When_Uppercased # L&       GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; Changes_When_Uppercased # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Changes_When_Uppercased # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FC7    ; Changes_When_Uppercased # L&   [2] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK SMALL LETTER ETA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FCC          ; Changes_When_Uppercased # L&       GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; Changes_When_Uppercased # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FD7    ; Changes_When_Uppercased # L&   [2] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND PERISPOMENI
+1FE0..1FE7    ; Changes_When_Uppercased # L&   [8] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND PERISPOMENI
+1FF2..1FF4    ; Changes_When_Uppercased # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FF7    ; Changes_When_Uppercased # L&   [2] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FFC          ; Changes_When_Uppercased # L&       GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+214E          ; Changes_When_Uppercased # L&       TURNED SMALL F
+2170..217F    ; Changes_When_Uppercased # Nl  [16] SMALL ROMAN NUMERAL ONE..SMALL ROMAN NUMERAL ONE THOUSAND
+2184          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER REVERSED C
+24D0..24E9    ; Changes_When_Uppercased # So  [26] CIRCLED LATIN SMALL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2C30..2C5F    ; Changes_When_Uppercased # L&  [48] GLAGOLITIC SMALL LETTER AZU..GLAGOLITIC SMALL LETTER CAUDATE CHRIVI
+2C61          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH DOUBLE BAR
+2C65..2C66    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER A WITH STROKE..LATIN SMALL LETTER T WITH DIAGONAL STROKE
+2C68          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER H WITH DESCENDER
+2C6A          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH DESCENDER
+2C6C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Z WITH DESCENDER
+2C73          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER W WITH HOOK
+2C76          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER HALF H
+2C81          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER ALFA
+2C83          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER VIDA
+2C85          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER GAMMA
+2C87          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER DALDA
+2C89          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER EIE
+2C8B          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER SOU
+2C8D          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER ZATA
+2C8F          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER HATE
+2C91          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER THETHE
+2C93          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER IAUDA
+2C95          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER KAPA
+2C97          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER LAULA
+2C99          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER MI
+2C9B          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER NI
+2C9D          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER KSI
+2C9F          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER O
+2CA1          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER PI
+2CA3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER RO
+2CA5          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER SIMA
+2CA7          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER TAU
+2CA9          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER UA
+2CAB          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER FI
+2CAD          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER KHI
+2CAF          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER PSI
+2CB1          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OOU
+2CB3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER DIALECT-P ALEF
+2CB5          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC AIN
+2CB7          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC EIE
+2CB9          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER DIALECT-P KAPA
+2CBB          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER DIALECT-P NI
+2CBD          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC NI
+2CBF          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC OOU
+2CC1          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER SAMPI
+2CC3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER CROSSED SHEI
+2CC5          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC SHEI
+2CC7          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC ESH
+2CC9          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER AKHMIMIC KHEI
+2CCB          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER DIALECT-P HORI
+2CCD          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC HORI
+2CCF          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC HA
+2CD1          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER L-SHAPED HA
+2CD3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC HEI
+2CD5          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC HAT
+2CD7          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC GANGIA
+2CD9          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC DJA
+2CDB          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD COPTIC SHIMA
+2CDD          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD NUBIAN SHIMA
+2CDF          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD NUBIAN NGI
+2CE1          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD NUBIAN NYI
+2CE3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER OLD NUBIAN WAU
+2CEC          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC SHEI
+2CEE          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF3          ; Changes_When_Uppercased # L&       COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Changes_When_Uppercased # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Changes_When_Uppercased # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Changes_When_Uppercased # L&       GEORGIAN SMALL LETTER AEN
+A641          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZEMLYA
+A643          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DZELO
+A645          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER REVERSED DZE
+A647          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTA
+A649          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DJERV
+A64B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER MONOGRAPH UK
+A64D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BROAD OMEGA
+A64F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER NEUTRAL YER
+A651          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER YERU WITH BACK YER
+A653          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTIFIED YAT
+A655          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER REVERSED YU
+A657          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTIFIED A
+A659          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER CLOSED LITTLE YUS
+A65B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BLENDED YUS
+A65D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER IOTIFIED CLOSED LITTLE YUS
+A65F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER YN
+A661          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER REVERSED TSE
+A663          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SOFT DE
+A665          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SOFT EL
+A667          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SOFT EM
+A669          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER MONOCULAR O
+A66B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER BINOCULAR O
+A66D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A681          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DWE
+A683          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DZWE
+A685          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER ZHWE
+A687          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER CCHE
+A689          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DZZE
+A68B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER TE WITH MIDDLE HOOK
+A68D          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER TWE
+A68F          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER TSWE
+A691          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER TSSE
+A693          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER TCHE
+A695          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER HWE
+A697          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER SHWE
+A699          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER DOUBLE O
+A69B          ; Changes_When_Uppercased # L&       CYRILLIC SMALL LETTER CROSSED O
+A723          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER EGYPTOLOGICAL ALEF
+A725          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER EGYPTOLOGICAL AIN
+A727          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER HENG
+A729          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TZ
+A72B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TRESILLO
+A72D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER CUATRILLO
+A72F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER CUATRILLO WITH COMMA
+A733          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AA
+A735          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AO
+A737          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AU
+A739          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AV
+A73B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AV WITH HORIZONTAL BAR
+A73D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER AY
+A73F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER REVERSED C WITH DOT
+A741          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH STROKE
+A743          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH DIAGONAL STROKE
+A745          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH STROKE AND DIAGONAL STROKE
+A747          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER BROKEN L
+A749          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER L WITH HIGH STROKE
+A74B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH LONG STROKE OVERLAY
+A74D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER O WITH LOOP
+A74F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER OO
+A751          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH STROKE THROUGH DESCENDER
+A753          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH FLOURISH
+A755          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER P WITH SQUIRREL TAIL
+A757          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Q WITH STROKE THROUGH DESCENDER
+A759          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER Q WITH DIAGONAL STROKE
+A75B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R ROTUNDA
+A75D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER RUM ROTUNDA
+A75F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER V WITH DIAGONAL STROKE
+A761          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER VY
+A763          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER VISIGOTHIC Z
+A765          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER THORN WITH STROKE
+A767          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER THORN WITH STROKE THROUGH DESCENDER
+A769          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER VEND
+A76B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER ET
+A76D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER IS
+A76F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER CON
+A77A          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER INSULAR D
+A77C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER INSULAR F
+A77F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TURNED INSULAR G
+A781          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER TURNED L
+A783          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER INSULAR R
+A785          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER INSULAR S
+A787          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER INSULAR T
+A78C          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER SALTILLO
+A791          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH DESCENDER
+A793..A794    ; Changes_When_Uppercased # L&   [2] LATIN SMALL LETTER C WITH BAR..LATIN SMALL LETTER C WITH PALATAL HOOK
+A797          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER B WITH FLOURISH
+A799          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER F WITH STROKE
+A79B          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER VOLAPUK AE
+A79D          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER VOLAPUK OE
+A79F          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER VOLAPUK UE
+A7A1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER G WITH OBLIQUE STROKE
+A7A3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER K WITH OBLIQUE STROKE
+A7A5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER N WITH OBLIQUE STROKE
+A7A7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER R WITH OBLIQUE STROKE
+A7A9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH OBLIQUE STROKE
+A7B5          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER BETA
+A7B7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER OMEGA
+A7B9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER U WITH STROKE
+A7BB          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER GLOTTAL A
+A7BD          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER GLOTTAL I
+A7BF          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER GLOTTAL U
+A7C1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER OLD POLISH O
+A7C3          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER ANGLICANA W
+A7C8          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER D WITH SHORT STROKE OVERLAY
+A7CA          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D1          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER CLOSED INSULAR G
+A7D7          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER MIDDLE SCOTS S
+A7D9          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER SIGMOID S
+A7F6          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER REVERSED HALF H
+AB53          ; Changes_When_Uppercased # L&       LATIN SMALL LETTER CHI
+AB70..ABBF    ; Changes_When_Uppercased # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Changes_When_Uppercased # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Changes_When_Uppercased # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF41..FF5A    ; Changes_When_Uppercased # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+10428..1044F  ; Changes_When_Uppercased # L&  [40] DESERET SMALL LETTER LONG I..DESERET SMALL LETTER EW
+104D8..104FB  ; Changes_When_Uppercased # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10597..105A1  ; Changes_When_Uppercased # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Changes_When_Uppercased # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Changes_When_Uppercased # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Changes_When_Uppercased # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10CC0..10CF2  ; Changes_When_Uppercased # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+118C0..118DF  ; Changes_When_Uppercased # L&  [32] WARANG CITI SMALL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+16E60..16E7F  ; Changes_When_Uppercased # L&  [32] MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+1E922..1E943  ; Changes_When_Uppercased # L&  [34] ADLAM SMALL LETTER ALIF..ADLAM SMALL LETTER SHA
+
+# Total code points: 1525
+
+# ================================================
+
+# Derived Property:   Changes_When_Titlecased (CWT)
+#  Characters whose normalized forms are not stable under a toTitlecase mapping.
+#  For more information, see D141 in Section 3.13, "Default Case Algorithms".
+#  Changes_When_Titlecased(X) is true when toTitlecase(toNFD(X)) != toNFD(X)
+
+0061..007A    ; Changes_When_Titlecased # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00B5          ; Changes_When_Titlecased # L&       MICRO SIGN
+00DF..00F6    ; Changes_When_Titlecased # L&  [24] LATIN SMALL LETTER SHARP S..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..00FF    ; Changes_When_Titlecased # L&   [8] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER Y WITH DIAERESIS
+0101          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH MACRON
+0103          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH BREVE
+0105          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH OGONEK
+0107          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH ACUTE
+0109          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH CIRCUMFLEX
+010B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH DOT ABOVE
+010D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH CARON
+010F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH CARON
+0111          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH STROKE
+0113          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH MACRON
+0115          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH BREVE
+0117          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH DOT ABOVE
+0119          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH OGONEK
+011B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CARON
+011D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH CIRCUMFLEX
+011F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH BREVE
+0121          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH DOT ABOVE
+0123          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH CEDILLA
+0125          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH CIRCUMFLEX
+0127          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH STROKE
+0129          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH TILDE
+012B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH MACRON
+012D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH BREVE
+012F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH OGONEK
+0131          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER DOTLESS I
+0133          ; Changes_When_Titlecased # L&       LATIN SMALL LIGATURE IJ
+0135          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER J WITH CIRCUMFLEX
+0137          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH CEDILLA
+013A          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH ACUTE
+013C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH CEDILLA
+013E          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH CARON
+0140          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH MIDDLE DOT
+0142          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH STROKE
+0144          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH ACUTE
+0146          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH CEDILLA
+0148..0149    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER N WITH CARON..LATIN SMALL LETTER N PRECEDED BY APOSTROPHE
+014B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER ENG
+014D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH MACRON
+014F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH BREVE
+0151          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH DOUBLE ACUTE
+0153          ; Changes_When_Titlecased # L&       LATIN SMALL LIGATURE OE
+0155          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH ACUTE
+0157          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH CEDILLA
+0159          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH CARON
+015B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH ACUTE
+015D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH CIRCUMFLEX
+015F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH CEDILLA
+0161          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH CARON
+0163          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH CEDILLA
+0165          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH CARON
+0167          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH STROKE
+0169          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH TILDE
+016B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH MACRON
+016D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH BREVE
+016F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH RING ABOVE
+0171          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DOUBLE ACUTE
+0173          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH OGONEK
+0175          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH CIRCUMFLEX
+0177          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH CIRCUMFLEX
+017A          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH ACUTE
+017C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH DOT ABOVE
+017E..0180    ; Changes_When_Titlecased # L&   [3] LATIN SMALL LETTER Z WITH CARON..LATIN SMALL LETTER B WITH STROKE
+0183          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER B WITH TOPBAR
+0185          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TONE SIX
+0188          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH HOOK
+018C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH TOPBAR
+0192          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER F WITH HOOK
+0195          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER HV
+0199..019A    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER K WITH HOOK..LATIN SMALL LETTER L WITH BAR
+019E          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH LONG RIGHT LEG
+01A1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HORN
+01A3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER OI
+01A5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH HOOK
+01A8          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TONE TWO
+01AD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH HOOK
+01B0          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HORN
+01B4          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH HOOK
+01B6          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH STROKE
+01B9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER EZH REVERSED
+01BD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TONE FIVE
+01BF          ; Changes_When_Titlecased # L&       LATIN LETTER WYNN
+01C4          ; Changes_When_Titlecased # L&       LATIN CAPITAL LETTER DZ WITH CARON
+01C6..01C7    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER DZ WITH CARON..LATIN CAPITAL LETTER LJ
+01C9..01CA    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER LJ..LATIN CAPITAL LETTER NJ
+01CC          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER NJ
+01CE          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH CARON
+01D0          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH CARON
+01D2          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH CARON
+01D4          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH CARON
+01D6          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DIAERESIS AND MACRON
+01D8          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DIAERESIS AND ACUTE
+01DA          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DIAERESIS AND CARON
+01DC..01DD    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER U WITH DIAERESIS AND GRAVE..LATIN SMALL LETTER TURNED E
+01DF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH DIAERESIS AND MACRON
+01E1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH DOT ABOVE AND MACRON
+01E3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AE WITH MACRON
+01E5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH STROKE
+01E7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH CARON
+01E9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH CARON
+01EB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH OGONEK
+01ED          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH OGONEK AND MACRON
+01EF..01F1    ; Changes_When_Titlecased # L&   [3] LATIN SMALL LETTER EZH WITH CARON..LATIN CAPITAL LETTER DZ
+01F3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER DZ
+01F5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH ACUTE
+01F9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH GRAVE
+01FB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH RING ABOVE AND ACUTE
+01FD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AE WITH ACUTE
+01FF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH STROKE AND ACUTE
+0201          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH DOUBLE GRAVE
+0203          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH INVERTED BREVE
+0205          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH DOUBLE GRAVE
+0207          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH INVERTED BREVE
+0209          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH DOUBLE GRAVE
+020B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH INVERTED BREVE
+020D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH DOUBLE GRAVE
+020F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH INVERTED BREVE
+0211          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH DOUBLE GRAVE
+0213          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH INVERTED BREVE
+0215          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DOUBLE GRAVE
+0217          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH INVERTED BREVE
+0219          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH COMMA BELOW
+021B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH COMMA BELOW
+021D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER YOGH
+021F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH CARON
+0223          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER OU
+0225          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH HOOK
+0227          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH DOT ABOVE
+0229          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CEDILLA
+022B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH DIAERESIS AND MACRON
+022D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH TILDE AND MACRON
+022F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH DOT ABOVE
+0231          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH DOT ABOVE AND MACRON
+0233          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH MACRON
+023C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH STROKE
+023F..0240    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER S WITH SWASH TAIL..LATIN SMALL LETTER Z WITH SWASH TAIL
+0242          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER GLOTTAL STOP
+0247          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH STROKE
+0249          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER J WITH STROKE
+024B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Q WITH HOOK TAIL
+024D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH STROKE
+024F..0254    ; Changes_When_Titlecased # L&   [6] LATIN SMALL LETTER Y WITH STROKE..LATIN SMALL LETTER OPEN O
+0256..0257    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER D WITH TAIL..LATIN SMALL LETTER D WITH HOOK
+0259          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER SCHWA
+025B..025C    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER OPEN E..LATIN SMALL LETTER REVERSED OPEN E
+0260..0261    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER G WITH HOOK..LATIN SMALL LETTER SCRIPT G
+0263          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER GAMMA
+0265..0266    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER TURNED H..LATIN SMALL LETTER H WITH HOOK
+0268..026C    ; Changes_When_Titlecased # L&   [5] LATIN SMALL LETTER I WITH STROKE..LATIN SMALL LETTER L WITH BELT
+026F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TURNED M
+0271..0272    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER M WITH HOOK..LATIN SMALL LETTER N WITH LEFT HOOK
+0275          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER BARRED O
+027D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH TAIL
+0280          ; Changes_When_Titlecased # L&       LATIN LETTER SMALL CAPITAL R
+0282..0283    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER S WITH HOOK..LATIN SMALL LETTER ESH
+0287..028C    ; Changes_When_Titlecased # L&   [6] LATIN SMALL LETTER TURNED T..LATIN SMALL LETTER TURNED V
+0292          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER EZH
+029D..029E    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER J WITH CROSSED-TAIL..LATIN SMALL LETTER TURNED K
+0345          ; Changes_When_Titlecased # Mn       COMBINING GREEK YPOGEGRAMMENI
+0371          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER HETA
+0373          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER ARCHAIC SAMPI
+0377          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037B..037D    ; Changes_When_Titlecased # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+0390          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
+03AC..03CE    ; Changes_When_Titlecased # L&  [35] GREEK SMALL LETTER ALPHA WITH TONOS..GREEK SMALL LETTER OMEGA WITH TONOS
+03D0..03D1    ; Changes_When_Titlecased # L&   [2] GREEK BETA SYMBOL..GREEK THETA SYMBOL
+03D5..03D7    ; Changes_When_Titlecased # L&   [3] GREEK PHI SYMBOL..GREEK KAI SYMBOL
+03D9          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER ARCHAIC KOPPA
+03DB          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER STIGMA
+03DD          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER DIGAMMA
+03DF          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER KOPPA
+03E1          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER SAMPI
+03E3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER SHEI
+03E5          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER FEI
+03E7          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER KHEI
+03E9          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER HORI
+03EB          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER GANGIA
+03ED          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER SHIMA
+03EF..03F3    ; Changes_When_Titlecased # L&   [5] COPTIC SMALL LETTER DEI..GREEK LETTER YOT
+03F5          ; Changes_When_Titlecased # L&       GREEK LUNATE EPSILON SYMBOL
+03F8          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER SHO
+03FB          ; Changes_When_Titlecased # L&       GREEK SMALL LETTER SAN
+0430..045F    ; Changes_When_Titlecased # L&  [48] CYRILLIC SMALL LETTER A..CYRILLIC SMALL LETTER DZHE
+0461          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER OMEGA
+0463          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER YAT
+0465          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTIFIED E
+0467          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER LITTLE YUS
+0469          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTIFIED LITTLE YUS
+046B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BIG YUS
+046D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTIFIED BIG YUS
+046F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KSI
+0471          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER PSI
+0473          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER FITA
+0475          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IZHITSA
+0477          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0479          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER UK
+047B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ROUND OMEGA
+047D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER OMEGA WITH TITLO
+047F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER OT
+0481          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOPPA
+048B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SHORT I WITH TAIL
+048D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SEMISOFT SIGN
+048F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ER WITH TICK
+0491          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER GHE WITH UPTURN
+0493          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER GHE WITH STROKE
+0495          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER GHE WITH MIDDLE HOOK
+0497          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZHE WITH DESCENDER
+0499          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZE WITH DESCENDER
+049B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KA WITH DESCENDER
+049D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KA WITH VERTICAL STROKE
+049F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KA WITH STROKE
+04A1          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BASHKIR KA
+04A3          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EN WITH DESCENDER
+04A5          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LIGATURE EN GHE
+04A7          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER PE WITH MIDDLE HOOK
+04A9          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ABKHASIAN HA
+04AB          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ES WITH DESCENDER
+04AD          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER TE WITH DESCENDER
+04AF          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER STRAIGHT U
+04B1          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER STRAIGHT U WITH STROKE
+04B3          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER HA WITH DESCENDER
+04B5          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LIGATURE TE TSE
+04B7          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER CHE WITH DESCENDER
+04B9          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER CHE WITH VERTICAL STROKE
+04BB          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SHHA
+04BD          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ABKHASIAN CHE
+04BF          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ABKHASIAN CHE WITH DESCENDER
+04C2          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZHE WITH BREVE
+04C4          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KA WITH HOOK
+04C6          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EL WITH TAIL
+04C8          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EN WITH HOOK
+04CA          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EN WITH TAIL
+04CC          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KHAKASSIAN CHE
+04CE..04CF    ; Changes_When_Titlecased # L&   [2] CYRILLIC SMALL LETTER EM WITH TAIL..CYRILLIC SMALL LETTER PALOCHKA
+04D1          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER A WITH BREVE
+04D3          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER A WITH DIAERESIS
+04D5          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LIGATURE A IE
+04D7          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IE WITH BREVE
+04D9          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SCHWA
+04DB          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SCHWA WITH DIAERESIS
+04DD          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZHE WITH DIAERESIS
+04DF          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZE WITH DIAERESIS
+04E1          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ABKHASIAN DZE
+04E3          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER I WITH MACRON
+04E5          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER I WITH DIAERESIS
+04E7          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER O WITH DIAERESIS
+04E9          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BARRED O
+04EB          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BARRED O WITH DIAERESIS
+04ED          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER E WITH DIAERESIS
+04EF          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER U WITH MACRON
+04F1          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER U WITH DIAERESIS
+04F3          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER U WITH DOUBLE ACUTE
+04F5          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER CHE WITH DIAERESIS
+04F7          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER GHE WITH DESCENDER
+04F9          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER YERU WITH DIAERESIS
+04FB          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER GHE WITH STROKE AND HOOK
+04FD          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER HA WITH HOOK
+04FF          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER HA WITH STROKE
+0501          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI DE
+0503          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI DJE
+0505          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI ZJE
+0507          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI DZJE
+0509          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI LJE
+050B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI NJE
+050D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI SJE
+050F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER KOMI TJE
+0511          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER REVERSED ZE
+0513          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EL WITH HOOK
+0515          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER LHA
+0517          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER RHA
+0519          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER YAE
+051B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER QA
+051D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER WE
+051F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ALEUT KA
+0521          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EL WITH MIDDLE HOOK
+0523          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EN WITH MIDDLE HOOK
+0525          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER PE WITH DESCENDER
+0527          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SHHA WITH DESCENDER
+0529          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EN WITH LEFT HOOK
+052B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DZZHE
+052D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DCHE
+052F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER EL WITH DESCENDER
+0561..0587    ; Changes_When_Titlecased # L&  [39] ARMENIAN SMALL LETTER AYB..ARMENIAN SMALL LIGATURE ECH YIWN
+13F8..13FD    ; Changes_When_Titlecased # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Changes_When_Titlecased # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1D79          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER INSULAR G
+1D7D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH STROKE
+1D8E          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH PALATAL HOOK
+1E01          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH RING BELOW
+1E03          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER B WITH DOT ABOVE
+1E05          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER B WITH DOT BELOW
+1E07          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER B WITH LINE BELOW
+1E09          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER C WITH CEDILLA AND ACUTE
+1E0B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH DOT ABOVE
+1E0D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH DOT BELOW
+1E0F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH LINE BELOW
+1E11          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH CEDILLA
+1E13          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH CIRCUMFLEX BELOW
+1E15          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH MACRON AND GRAVE
+1E17          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH MACRON AND ACUTE
+1E19          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX BELOW
+1E1B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH TILDE BELOW
+1E1D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CEDILLA AND BREVE
+1E1F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER F WITH DOT ABOVE
+1E21          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH MACRON
+1E23          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH DOT ABOVE
+1E25          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH DOT BELOW
+1E27          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH DIAERESIS
+1E29          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH CEDILLA
+1E2B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH BREVE BELOW
+1E2D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH TILDE BELOW
+1E2F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH DIAERESIS AND ACUTE
+1E31          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH ACUTE
+1E33          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH DOT BELOW
+1E35          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH LINE BELOW
+1E37          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH DOT BELOW
+1E39          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH DOT BELOW AND MACRON
+1E3B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH LINE BELOW
+1E3D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH CIRCUMFLEX BELOW
+1E3F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER M WITH ACUTE
+1E41          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER M WITH DOT ABOVE
+1E43          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER M WITH DOT BELOW
+1E45          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH DOT ABOVE
+1E47          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH DOT BELOW
+1E49          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH LINE BELOW
+1E4B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH CIRCUMFLEX BELOW
+1E4D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH TILDE AND ACUTE
+1E4F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH TILDE AND DIAERESIS
+1E51          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH MACRON AND GRAVE
+1E53          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH MACRON AND ACUTE
+1E55          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH ACUTE
+1E57          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH DOT ABOVE
+1E59          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH DOT ABOVE
+1E5B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH DOT BELOW
+1E5D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH DOT BELOW AND MACRON
+1E5F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH LINE BELOW
+1E61          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH DOT ABOVE
+1E63          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH DOT BELOW
+1E65          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH ACUTE AND DOT ABOVE
+1E67          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH CARON AND DOT ABOVE
+1E69          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH DOT ABOVE
+1E6D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH DOT BELOW
+1E6F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH LINE BELOW
+1E71          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER T WITH CIRCUMFLEX BELOW
+1E73          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DIAERESIS BELOW
+1E75          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH TILDE BELOW
+1E77          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH CIRCUMFLEX BELOW
+1E79          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH TILDE AND ACUTE
+1E7B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH MACRON AND DIAERESIS
+1E7D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER V WITH TILDE
+1E7F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER V WITH DOT BELOW
+1E81          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH GRAVE
+1E83          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH ACUTE
+1E85          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH DIAERESIS
+1E87          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH DOT ABOVE
+1E89          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH DOT BELOW
+1E8B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER X WITH DOT ABOVE
+1E8D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER X WITH DIAERESIS
+1E8F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH DOT ABOVE
+1E91          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH CIRCUMFLEX
+1E93          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH DOT BELOW
+1E95..1E9B    ; Changes_When_Titlecased # L&   [7] LATIN SMALL LETTER Z WITH LINE BELOW..LATIN SMALL LETTER LONG S WITH DOT ABOVE
+1EA1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH DOT BELOW
+1EA3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH HOOK ABOVE
+1EA5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH BREVE AND ACUTE
+1EB1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH BREVE AND GRAVE
+1EB3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH BREVE AND HOOK ABOVE
+1EB5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH BREVE AND TILDE
+1EB7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER A WITH BREVE AND DOT BELOW
+1EB9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH DOT BELOW
+1EBB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH HOOK ABOVE
+1EBD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH TILDE
+1EBF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH HOOK ABOVE
+1ECB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER I WITH DOT BELOW
+1ECD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH DOT BELOW
+1ECF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HOOK ABOVE
+1ED1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HORN AND ACUTE
+1EDD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HORN AND GRAVE
+1EDF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HORN AND HOOK ABOVE
+1EE1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HORN AND TILDE
+1EE3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH HORN AND DOT BELOW
+1EE5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH DOT BELOW
+1EE7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HOOK ABOVE
+1EE9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HORN AND ACUTE
+1EEB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HORN AND GRAVE
+1EED          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HORN AND HOOK ABOVE
+1EEF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HORN AND TILDE
+1EF1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH HORN AND DOT BELOW
+1EF3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH GRAVE
+1EF5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH DOT BELOW
+1EF7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH HOOK ABOVE
+1EF9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Y WITH TILDE
+1EFB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER MIDDLE-WELSH LL
+1EFD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER MIDDLE-WELSH V
+1EFF..1F07    ; Changes_When_Titlecased # L&   [9] LATIN SMALL LETTER Y WITH LOOP..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F10..1F15    ; Changes_When_Titlecased # L&   [6] GREEK SMALL LETTER EPSILON WITH PSILI..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F27    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI
+1F30..1F37    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER IOTA WITH PSILI..GREEK SMALL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F40..1F45    ; Changes_When_Titlecased # L&   [6] GREEK SMALL LETTER OMICRON WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F60..1F67    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER OMEGA WITH PSILI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1F70..1F7D    ; Changes_When_Titlecased # L&  [14] GREEK SMALL LETTER ALPHA WITH VARIA..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1F87    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1F90..1F97    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER ETA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1FA0..1FA7    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER OMEGA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1FB0..1FB4    ; Changes_When_Titlecased # L&   [5] GREEK SMALL LETTER ALPHA WITH VRACHY..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FB7    ; Changes_When_Titlecased # L&   [2] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK SMALL LETTER ALPHA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FBE          ; Changes_When_Titlecased # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Changes_When_Titlecased # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FC7    ; Changes_When_Titlecased # L&   [2] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK SMALL LETTER ETA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FD0..1FD3    ; Changes_When_Titlecased # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FD7    ; Changes_When_Titlecased # L&   [2] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND PERISPOMENI
+1FE0..1FE7    ; Changes_When_Titlecased # L&   [8] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND PERISPOMENI
+1FF2..1FF4    ; Changes_When_Titlecased # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FF7    ; Changes_When_Titlecased # L&   [2] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENI
+214E          ; Changes_When_Titlecased # L&       TURNED SMALL F
+2170..217F    ; Changes_When_Titlecased # Nl  [16] SMALL ROMAN NUMERAL ONE..SMALL ROMAN NUMERAL ONE THOUSAND
+2184          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER REVERSED C
+24D0..24E9    ; Changes_When_Titlecased # So  [26] CIRCLED LATIN SMALL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2C30..2C5F    ; Changes_When_Titlecased # L&  [48] GLAGOLITIC SMALL LETTER AZU..GLAGOLITIC SMALL LETTER CAUDATE CHRIVI
+2C61          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH DOUBLE BAR
+2C65..2C66    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER A WITH STROKE..LATIN SMALL LETTER T WITH DIAGONAL STROKE
+2C68          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER H WITH DESCENDER
+2C6A          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH DESCENDER
+2C6C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Z WITH DESCENDER
+2C73          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER W WITH HOOK
+2C76          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER HALF H
+2C81          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER ALFA
+2C83          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER VIDA
+2C85          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER GAMMA
+2C87          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER DALDA
+2C89          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER EIE
+2C8B          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER SOU
+2C8D          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER ZATA
+2C8F          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER HATE
+2C91          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER THETHE
+2C93          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER IAUDA
+2C95          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER KAPA
+2C97          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER LAULA
+2C99          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER MI
+2C9B          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER NI
+2C9D          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER KSI
+2C9F          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER O
+2CA1          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER PI
+2CA3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER RO
+2CA5          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER SIMA
+2CA7          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER TAU
+2CA9          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER UA
+2CAB          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER FI
+2CAD          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER KHI
+2CAF          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER PSI
+2CB1          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OOU
+2CB3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER DIALECT-P ALEF
+2CB5          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC AIN
+2CB7          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC EIE
+2CB9          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER DIALECT-P KAPA
+2CBB          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER DIALECT-P NI
+2CBD          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC NI
+2CBF          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC OOU
+2CC1          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER SAMPI
+2CC3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER CROSSED SHEI
+2CC5          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC SHEI
+2CC7          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC ESH
+2CC9          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER AKHMIMIC KHEI
+2CCB          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER DIALECT-P HORI
+2CCD          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC HORI
+2CCF          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC HA
+2CD1          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER L-SHAPED HA
+2CD3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC HEI
+2CD5          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC HAT
+2CD7          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC GANGIA
+2CD9          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC DJA
+2CDB          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD COPTIC SHIMA
+2CDD          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD NUBIAN SHIMA
+2CDF          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD NUBIAN NGI
+2CE1          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD NUBIAN NYI
+2CE3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER OLD NUBIAN WAU
+2CEC          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC SHEI
+2CEE          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF3          ; Changes_When_Titlecased # L&       COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Changes_When_Titlecased # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Changes_When_Titlecased # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Changes_When_Titlecased # L&       GEORGIAN SMALL LETTER AEN
+A641          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZEMLYA
+A643          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DZELO
+A645          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER REVERSED DZE
+A647          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTA
+A649          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DJERV
+A64B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER MONOGRAPH UK
+A64D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BROAD OMEGA
+A64F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER NEUTRAL YER
+A651          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER YERU WITH BACK YER
+A653          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTIFIED YAT
+A655          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER REVERSED YU
+A657          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTIFIED A
+A659          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER CLOSED LITTLE YUS
+A65B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BLENDED YUS
+A65D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER IOTIFIED CLOSED LITTLE YUS
+A65F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER YN
+A661          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER REVERSED TSE
+A663          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SOFT DE
+A665          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SOFT EL
+A667          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SOFT EM
+A669          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER MONOCULAR O
+A66B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER BINOCULAR O
+A66D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A681          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DWE
+A683          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DZWE
+A685          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER ZHWE
+A687          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER CCHE
+A689          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DZZE
+A68B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER TE WITH MIDDLE HOOK
+A68D          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER TWE
+A68F          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER TSWE
+A691          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER TSSE
+A693          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER TCHE
+A695          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER HWE
+A697          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER SHWE
+A699          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER DOUBLE O
+A69B          ; Changes_When_Titlecased # L&       CYRILLIC SMALL LETTER CROSSED O
+A723          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER EGYPTOLOGICAL ALEF
+A725          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER EGYPTOLOGICAL AIN
+A727          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER HENG
+A729          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TZ
+A72B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TRESILLO
+A72D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER CUATRILLO
+A72F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER CUATRILLO WITH COMMA
+A733          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AA
+A735          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AO
+A737          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AU
+A739          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AV
+A73B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AV WITH HORIZONTAL BAR
+A73D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER AY
+A73F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER REVERSED C WITH DOT
+A741          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH STROKE
+A743          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH DIAGONAL STROKE
+A745          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH STROKE AND DIAGONAL STROKE
+A747          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER BROKEN L
+A749          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER L WITH HIGH STROKE
+A74B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH LONG STROKE OVERLAY
+A74D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER O WITH LOOP
+A74F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER OO
+A751          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH STROKE THROUGH DESCENDER
+A753          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH FLOURISH
+A755          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER P WITH SQUIRREL TAIL
+A757          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Q WITH STROKE THROUGH DESCENDER
+A759          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER Q WITH DIAGONAL STROKE
+A75B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R ROTUNDA
+A75D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER RUM ROTUNDA
+A75F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER V WITH DIAGONAL STROKE
+A761          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER VY
+A763          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER VISIGOTHIC Z
+A765          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER THORN WITH STROKE
+A767          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER THORN WITH STROKE THROUGH DESCENDER
+A769          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER VEND
+A76B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER ET
+A76D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER IS
+A76F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER CON
+A77A          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER INSULAR D
+A77C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER INSULAR F
+A77F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TURNED INSULAR G
+A781          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER TURNED L
+A783          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER INSULAR R
+A785          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER INSULAR S
+A787          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER INSULAR T
+A78C          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER SALTILLO
+A791          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH DESCENDER
+A793..A794    ; Changes_When_Titlecased # L&   [2] LATIN SMALL LETTER C WITH BAR..LATIN SMALL LETTER C WITH PALATAL HOOK
+A797          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER B WITH FLOURISH
+A799          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER F WITH STROKE
+A79B          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER VOLAPUK AE
+A79D          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER VOLAPUK OE
+A79F          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER VOLAPUK UE
+A7A1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER G WITH OBLIQUE STROKE
+A7A3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER K WITH OBLIQUE STROKE
+A7A5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER N WITH OBLIQUE STROKE
+A7A7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER R WITH OBLIQUE STROKE
+A7A9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH OBLIQUE STROKE
+A7B5          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER BETA
+A7B7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER OMEGA
+A7B9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER U WITH STROKE
+A7BB          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER GLOTTAL A
+A7BD          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER GLOTTAL I
+A7BF          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER GLOTTAL U
+A7C1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER OLD POLISH O
+A7C3          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER ANGLICANA W
+A7C8          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER D WITH SHORT STROKE OVERLAY
+A7CA          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D1          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER CLOSED INSULAR G
+A7D7          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER MIDDLE SCOTS S
+A7D9          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER SIGMOID S
+A7F6          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER REVERSED HALF H
+AB53          ; Changes_When_Titlecased # L&       LATIN SMALL LETTER CHI
+AB70..ABBF    ; Changes_When_Titlecased # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Changes_When_Titlecased # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Changes_When_Titlecased # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF41..FF5A    ; Changes_When_Titlecased # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+10428..1044F  ; Changes_When_Titlecased # L&  [40] DESERET SMALL LETTER LONG I..DESERET SMALL LETTER EW
+104D8..104FB  ; Changes_When_Titlecased # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10597..105A1  ; Changes_When_Titlecased # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Changes_When_Titlecased # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Changes_When_Titlecased # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Changes_When_Titlecased # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10CC0..10CF2  ; Changes_When_Titlecased # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+118C0..118DF  ; Changes_When_Titlecased # L&  [32] WARANG CITI SMALL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+16E60..16E7F  ; Changes_When_Titlecased # L&  [32] MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+1E922..1E943  ; Changes_When_Titlecased # L&  [34] ADLAM SMALL LETTER ALIF..ADLAM SMALL LETTER SHA
+
+# Total code points: 1452
+
+# ================================================
+
+# Derived Property:   Changes_When_Casefolded (CWCF)
+#  Characters whose normalized forms are not stable under case folding.
+#  For more information, see D142 in Section 3.13, "Default Case Algorithms".
+#  Changes_When_Casefolded(X) is true when toCasefold(toNFD(X)) != toNFD(X)
+
+0041..005A    ; Changes_When_Casefolded # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+00B5          ; Changes_When_Casefolded # L&       MICRO SIGN
+00C0..00D6    ; Changes_When_Casefolded # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00DF    ; Changes_When_Casefolded # L&   [8] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER SHARP S
+0100          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH MACRON
+0102          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH BREVE
+0104          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH OGONEK
+0106          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER C WITH ACUTE
+0108          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER C WITH CIRCUMFLEX
+010A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER C WITH DOT ABOVE
+010C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER C WITH CARON
+010E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH CARON
+0110          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH STROKE
+0112          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH MACRON
+0114          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH BREVE
+0116          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH DOT ABOVE
+0118          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH OGONEK
+011A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CARON
+011C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH CIRCUMFLEX
+011E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH BREVE
+0120          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH DOT ABOVE
+0122          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH CEDILLA
+0124          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH CIRCUMFLEX
+0126          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH STROKE
+0128          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH TILDE
+012A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH MACRON
+012C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH BREVE
+012E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH OGONEK
+0130          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH DOT ABOVE
+0132          ; Changes_When_Casefolded # L&       LATIN CAPITAL LIGATURE IJ
+0134          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER J WITH CIRCUMFLEX
+0136          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH CEDILLA
+0139          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH ACUTE
+013B          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH CEDILLA
+013D          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH CARON
+013F          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH MIDDLE DOT
+0141          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH STROKE
+0143          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH ACUTE
+0145          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH CEDILLA
+0147          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH CARON
+0149..014A    ; Changes_When_Casefolded # L&   [2] LATIN SMALL LETTER N PRECEDED BY APOSTROPHE..LATIN CAPITAL LETTER ENG
+014C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH MACRON
+014E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH BREVE
+0150          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
+0152          ; Changes_When_Casefolded # L&       LATIN CAPITAL LIGATURE OE
+0154          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH ACUTE
+0156          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH CEDILLA
+0158          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH CARON
+015A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH ACUTE
+015C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH CIRCUMFLEX
+015E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH CEDILLA
+0160          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH CARON
+0162          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH CEDILLA
+0164          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH CARON
+0166          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH STROKE
+0168          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH TILDE
+016A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH MACRON
+016C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH BREVE
+016E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH RING ABOVE
+0170          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
+0172          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH OGONEK
+0174          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH CIRCUMFLEX
+0176          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH CIRCUMFLEX
+0178..0179    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER Y WITH DIAERESIS..LATIN CAPITAL LETTER Z WITH ACUTE
+017B          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH DOT ABOVE
+017D          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH CARON
+017F          ; Changes_When_Casefolded # L&       LATIN SMALL LETTER LONG S
+0181..0182    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER B WITH HOOK..LATIN CAPITAL LETTER B WITH TOPBAR
+0184          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER TONE SIX
+0186..0187    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER OPEN O..LATIN CAPITAL LETTER C WITH HOOK
+0189..018B    ; Changes_When_Casefolded # L&   [3] LATIN CAPITAL LETTER AFRICAN D..LATIN CAPITAL LETTER D WITH TOPBAR
+018E..0191    ; Changes_When_Casefolded # L&   [4] LATIN CAPITAL LETTER REVERSED E..LATIN CAPITAL LETTER F WITH HOOK
+0193..0194    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER G WITH HOOK..LATIN CAPITAL LETTER GAMMA
+0196..0198    ; Changes_When_Casefolded # L&   [3] LATIN CAPITAL LETTER IOTA..LATIN CAPITAL LETTER K WITH HOOK
+019C..019D    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER TURNED M..LATIN CAPITAL LETTER N WITH LEFT HOOK
+019F..01A0    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER O WITH MIDDLE TILDE..LATIN CAPITAL LETTER O WITH HORN
+01A2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER OI
+01A4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER P WITH HOOK
+01A6..01A7    ; Changes_When_Casefolded # L&   [2] LATIN LETTER YR..LATIN CAPITAL LETTER TONE TWO
+01A9          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER ESH
+01AC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH HOOK
+01AE..01AF    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER T WITH RETROFLEX HOOK..LATIN CAPITAL LETTER U WITH HORN
+01B1..01B3    ; Changes_When_Casefolded # L&   [3] LATIN CAPITAL LETTER UPSILON..LATIN CAPITAL LETTER Y WITH HOOK
+01B5          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH STROKE
+01B7..01B8    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER EZH..LATIN CAPITAL LETTER EZH REVERSED
+01BC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER TONE FIVE
+01C4..01C5    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER DZ WITH CARON..LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON
+01C7..01C8    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER LJ..LATIN CAPITAL LETTER L WITH SMALL LETTER J
+01CA..01CB    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER NJ..LATIN CAPITAL LETTER N WITH SMALL LETTER J
+01CD          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH CARON
+01CF          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH CARON
+01D1          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH CARON
+01D3          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH CARON
+01D5          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND MACRON
+01D7          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND ACUTE
+01D9          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND CARON
+01DB          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DIAERESIS AND GRAVE
+01DE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH DIAERESIS AND MACRON
+01E0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH DOT ABOVE AND MACRON
+01E2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AE WITH MACRON
+01E4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH STROKE
+01E6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH CARON
+01E8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH CARON
+01EA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH OGONEK
+01EC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH OGONEK AND MACRON
+01EE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER EZH WITH CARON
+01F1..01F2    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER DZ..LATIN CAPITAL LETTER D WITH SMALL LETTER Z
+01F4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH ACUTE
+01F6..01F8    ; Changes_When_Casefolded # L&   [3] LATIN CAPITAL LETTER HWAIR..LATIN CAPITAL LETTER N WITH GRAVE
+01FA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH RING ABOVE AND ACUTE
+01FC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AE WITH ACUTE
+01FE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH STROKE AND ACUTE
+0200          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH DOUBLE GRAVE
+0202          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH INVERTED BREVE
+0204          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH DOUBLE GRAVE
+0206          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH INVERTED BREVE
+0208          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH DOUBLE GRAVE
+020A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH INVERTED BREVE
+020C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH DOUBLE GRAVE
+020E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH INVERTED BREVE
+0210          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH DOUBLE GRAVE
+0212          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH INVERTED BREVE
+0214          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DOUBLE GRAVE
+0216          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH INVERTED BREVE
+0218          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH COMMA BELOW
+021A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH COMMA BELOW
+021C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER YOGH
+021E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH CARON
+0220          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH LONG RIGHT LEG
+0222          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER OU
+0224          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH HOOK
+0226          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH DOT ABOVE
+0228          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CEDILLA
+022A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH DIAERESIS AND MACRON
+022C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH TILDE AND MACRON
+022E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH DOT ABOVE
+0230          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH DOT ABOVE AND MACRON
+0232          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH MACRON
+023A..023B    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER A WITH STROKE..LATIN CAPITAL LETTER C WITH STROKE
+023D..023E    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER L WITH BAR..LATIN CAPITAL LETTER T WITH DIAGONAL STROKE
+0241          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER GLOTTAL STOP
+0243..0246    ; Changes_When_Casefolded # L&   [4] LATIN CAPITAL LETTER B WITH STROKE..LATIN CAPITAL LETTER E WITH STROKE
+0248          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER J WITH STROKE
+024A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER SMALL Q WITH HOOK TAIL
+024C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH STROKE
+024E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH STROKE
+0345          ; Changes_When_Casefolded # Mn       COMBINING GREEK YPOGEGRAMMENI
+0370          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER HETA
+0372          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER ARCHAIC SAMPI
+0376          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA
+037F          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER YOT
+0386          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Changes_When_Casefolded # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..038F    ; Changes_When_Casefolded # L&   [2] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER OMEGA WITH TONOS
+0391..03A1    ; Changes_When_Casefolded # L&  [17] GREEK CAPITAL LETTER ALPHA..GREEK CAPITAL LETTER RHO
+03A3..03AB    ; Changes_When_Casefolded # L&   [9] GREEK CAPITAL LETTER SIGMA..GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA
+03C2          ; Changes_When_Casefolded # L&       GREEK SMALL LETTER FINAL SIGMA
+03CF..03D1    ; Changes_When_Casefolded # L&   [3] GREEK CAPITAL KAI SYMBOL..GREEK THETA SYMBOL
+03D5..03D6    ; Changes_When_Casefolded # L&   [2] GREEK PHI SYMBOL..GREEK PI SYMBOL
+03D8          ; Changes_When_Casefolded # L&       GREEK LETTER ARCHAIC KOPPA
+03DA          ; Changes_When_Casefolded # L&       GREEK LETTER STIGMA
+03DC          ; Changes_When_Casefolded # L&       GREEK LETTER DIGAMMA
+03DE          ; Changes_When_Casefolded # L&       GREEK LETTER KOPPA
+03E0          ; Changes_When_Casefolded # L&       GREEK LETTER SAMPI
+03E2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER SHEI
+03E4          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER FEI
+03E6          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER KHEI
+03E8          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER HORI
+03EA          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER GANGIA
+03EC          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER SHIMA
+03EE          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER DEI
+03F0..03F1    ; Changes_When_Casefolded # L&   [2] GREEK KAPPA SYMBOL..GREEK RHO SYMBOL
+03F4..03F5    ; Changes_When_Casefolded # L&   [2] GREEK CAPITAL THETA SYMBOL..GREEK LUNATE EPSILON SYMBOL
+03F7          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER SHO
+03F9..03FA    ; Changes_When_Casefolded # L&   [2] GREEK CAPITAL LUNATE SIGMA SYMBOL..GREEK CAPITAL LETTER SAN
+03FD..042F    ; Changes_When_Casefolded # L&  [51] GREEK CAPITAL REVERSED LUNATE SIGMA SYMBOL..CYRILLIC CAPITAL LETTER YA
+0460          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER OMEGA
+0462          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER YAT
+0464          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTIFIED E
+0466          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER LITTLE YUS
+0468          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTIFIED LITTLE YUS
+046A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BIG YUS
+046C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTIFIED BIG YUS
+046E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KSI
+0470          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER PSI
+0472          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER FITA
+0474          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IZHITSA
+0476          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0478          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER UK
+047A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ROUND OMEGA
+047C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER OMEGA WITH TITLO
+047E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER OT
+0480          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOPPA
+048A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SHORT I WITH TAIL
+048C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SEMISOFT SIGN
+048E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ER WITH TICK
+0490          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER GHE WITH UPTURN
+0492          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER GHE WITH STROKE
+0494          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER GHE WITH MIDDLE HOOK
+0496          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ZHE WITH DESCENDER
+0498          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ZE WITH DESCENDER
+049A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KA WITH DESCENDER
+049C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KA WITH VERTICAL STROKE
+049E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KA WITH STROKE
+04A0          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BASHKIR KA
+04A2          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EN WITH DESCENDER
+04A4          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LIGATURE EN GHE
+04A6          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER PE WITH MIDDLE HOOK
+04A8          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ABKHASIAN HA
+04AA          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ES WITH DESCENDER
+04AC          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER TE WITH DESCENDER
+04AE          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER STRAIGHT U
+04B0          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER STRAIGHT U WITH STROKE
+04B2          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER HA WITH DESCENDER
+04B4          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LIGATURE TE TSE
+04B6          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER CHE WITH DESCENDER
+04B8          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER CHE WITH VERTICAL STROKE
+04BA          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SHHA
+04BC          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ABKHASIAN CHE
+04BE          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ABKHASIAN CHE WITH DESCENDER
+04C0..04C1    ; Changes_When_Casefolded # L&   [2] CYRILLIC LETTER PALOCHKA..CYRILLIC CAPITAL LETTER ZHE WITH BREVE
+04C3          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KA WITH HOOK
+04C5          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EL WITH TAIL
+04C7          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EN WITH HOOK
+04C9          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EN WITH TAIL
+04CB          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KHAKASSIAN CHE
+04CD          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EM WITH TAIL
+04D0          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER A WITH BREVE
+04D2          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER A WITH DIAERESIS
+04D4          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LIGATURE A IE
+04D6          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IE WITH BREVE
+04D8          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SCHWA
+04DA          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SCHWA WITH DIAERESIS
+04DC          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ZHE WITH DIAERESIS
+04DE          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ZE WITH DIAERESIS
+04E0          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ABKHASIAN DZE
+04E2          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER I WITH MACRON
+04E4          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER I WITH DIAERESIS
+04E6          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER O WITH DIAERESIS
+04E8          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BARRED O
+04EA          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BARRED O WITH DIAERESIS
+04EC          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER E WITH DIAERESIS
+04EE          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER U WITH MACRON
+04F0          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER U WITH DIAERESIS
+04F2          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER U WITH DOUBLE ACUTE
+04F4          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER CHE WITH DIAERESIS
+04F6          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER GHE WITH DESCENDER
+04F8          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER YERU WITH DIAERESIS
+04FA          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER GHE WITH STROKE AND HOOK
+04FC          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER HA WITH HOOK
+04FE          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER HA WITH STROKE
+0500          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI DE
+0502          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI DJE
+0504          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI ZJE
+0506          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI DZJE
+0508          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI LJE
+050A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI NJE
+050C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI SJE
+050E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER KOMI TJE
+0510          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER REVERSED ZE
+0512          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EL WITH HOOK
+0514          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER LHA
+0516          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER RHA
+0518          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER YAE
+051A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER QA
+051C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER WE
+051E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ALEUT KA
+0520          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EL WITH MIDDLE HOOK
+0522          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EN WITH MIDDLE HOOK
+0524          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER PE WITH DESCENDER
+0526          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SHHA WITH DESCENDER
+0528          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK
+052A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DZZHE
+052C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DCHE
+052E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER EL WITH DESCENDER
+0531..0556    ; Changes_When_Casefolded # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0587          ; Changes_When_Casefolded # L&       ARMENIAN SMALL LIGATURE ECH YIWN
+10A0..10C5    ; Changes_When_Casefolded # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Changes_When_Casefolded # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Changes_When_Casefolded # L&       GEORGIAN CAPITAL LETTER AEN
+13F8..13FD    ; Changes_When_Casefolded # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Changes_When_Casefolded # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; Changes_When_Casefolded # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Changes_When_Casefolded # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1E00          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH RING BELOW
+1E02          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER B WITH DOT ABOVE
+1E04          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER B WITH DOT BELOW
+1E06          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER B WITH LINE BELOW
+1E08          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER C WITH CEDILLA AND ACUTE
+1E0A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH DOT ABOVE
+1E0C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH DOT BELOW
+1E0E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH LINE BELOW
+1E10          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH CEDILLA
+1E12          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER D WITH CIRCUMFLEX BELOW
+1E14          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH MACRON AND GRAVE
+1E16          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH MACRON AND ACUTE
+1E18          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX BELOW
+1E1A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH TILDE BELOW
+1E1C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CEDILLA AND BREVE
+1E1E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER F WITH DOT ABOVE
+1E20          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH MACRON
+1E22          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH DOT ABOVE
+1E24          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH DOT BELOW
+1E26          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH DIAERESIS
+1E28          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH CEDILLA
+1E2A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH BREVE BELOW
+1E2C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH TILDE BELOW
+1E2E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH DIAERESIS AND ACUTE
+1E30          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH ACUTE
+1E32          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH DOT BELOW
+1E34          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH LINE BELOW
+1E36          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH DOT BELOW
+1E38          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH DOT BELOW AND MACRON
+1E3A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH LINE BELOW
+1E3C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH CIRCUMFLEX BELOW
+1E3E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER M WITH ACUTE
+1E40          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER M WITH DOT ABOVE
+1E42          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER M WITH DOT BELOW
+1E44          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH DOT ABOVE
+1E46          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH DOT BELOW
+1E48          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH LINE BELOW
+1E4A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH CIRCUMFLEX BELOW
+1E4C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH TILDE AND ACUTE
+1E4E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH TILDE AND DIAERESIS
+1E50          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH MACRON AND GRAVE
+1E52          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH MACRON AND ACUTE
+1E54          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER P WITH ACUTE
+1E56          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER P WITH DOT ABOVE
+1E58          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH DOT ABOVE
+1E5A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH DOT BELOW
+1E5C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH DOT BELOW AND MACRON
+1E5E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH LINE BELOW
+1E60          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH DOT ABOVE
+1E62          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH DOT BELOW
+1E64          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH ACUTE AND DOT ABOVE
+1E66          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH CARON AND DOT ABOVE
+1E68          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH DOT ABOVE
+1E6C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH DOT BELOW
+1E6E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH LINE BELOW
+1E70          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER T WITH CIRCUMFLEX BELOW
+1E72          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DIAERESIS BELOW
+1E74          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH TILDE BELOW
+1E76          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH CIRCUMFLEX BELOW
+1E78          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH TILDE AND ACUTE
+1E7A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH MACRON AND DIAERESIS
+1E7C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER V WITH TILDE
+1E7E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER V WITH DOT BELOW
+1E80          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH GRAVE
+1E82          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH ACUTE
+1E84          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH DIAERESIS
+1E86          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH DOT ABOVE
+1E88          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH DOT BELOW
+1E8A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER X WITH DOT ABOVE
+1E8C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER X WITH DIAERESIS
+1E8E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH DOT ABOVE
+1E90          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH CIRCUMFLEX
+1E92          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH DOT BELOW
+1E94          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH LINE BELOW
+1E9A..1E9B    ; Changes_When_Casefolded # L&   [2] LATIN SMALL LETTER A WITH RIGHT HALF RING..LATIN SMALL LETTER LONG S WITH DOT ABOVE
+1E9E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER SHARP S
+1EA0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH DOT BELOW
+1EA2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH HOOK ABOVE
+1EA4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH BREVE AND ACUTE
+1EB0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH BREVE AND GRAVE
+1EB2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH BREVE AND HOOK ABOVE
+1EB4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH BREVE AND TILDE
+1EB6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER A WITH BREVE AND DOT BELOW
+1EB8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH DOT BELOW
+1EBA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH HOOK ABOVE
+1EBC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH TILDE
+1EBE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH HOOK ABOVE
+1ECA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER I WITH DOT BELOW
+1ECC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH DOT BELOW
+1ECE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH HOOK ABOVE
+1ED0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH HORN AND ACUTE
+1EDC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH HORN AND GRAVE
+1EDE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH HORN AND HOOK ABOVE
+1EE0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH HORN AND TILDE
+1EE2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH HORN AND DOT BELOW
+1EE4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH DOT BELOW
+1EE6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH HOOK ABOVE
+1EE8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH HORN AND ACUTE
+1EEA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH HORN AND GRAVE
+1EEC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH HORN AND HOOK ABOVE
+1EEE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH HORN AND TILDE
+1EF0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH HORN AND DOT BELOW
+1EF2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH GRAVE
+1EF4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH DOT BELOW
+1EF6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH HOOK ABOVE
+1EF8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH TILDE
+1EFA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER MIDDLE-WELSH LL
+1EFC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER MIDDLE-WELSH V
+1EFE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Y WITH LOOP
+1F08..1F0F    ; Changes_When_Casefolded # L&   [8] GREEK CAPITAL LETTER ALPHA WITH PSILI..GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F18..1F1D    ; Changes_When_Casefolded # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F28..1F2F    ; Changes_When_Casefolded # L&   [8] GREEK CAPITAL LETTER ETA WITH PSILI..GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI
+1F38..1F3F    ; Changes_When_Casefolded # L&   [8] GREEK CAPITAL LETTER IOTA WITH PSILI..GREEK CAPITAL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F48..1F4D    ; Changes_When_Casefolded # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F59          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F          ; Changes_When_Casefolded # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F68..1F6F    ; Changes_When_Casefolded # L&   [8] GREEK CAPITAL LETTER OMEGA WITH PSILI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1F80..1FAF    ; Changes_When_Casefolded # L&  [48] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1FB2..1FB4    ; Changes_When_Casefolded # L&   [3] GREEK SMALL LETTER ALPHA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB7..1FBC    ; Changes_When_Casefolded # L&   [6] GREEK SMALL LETTER ALPHA WITH PERISPOMENI AND YPOGEGRAMMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FC2..1FC4    ; Changes_When_Casefolded # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC7..1FCC    ; Changes_When_Casefolded # L&   [6] GREEK SMALL LETTER ETA WITH PERISPOMENI AND YPOGEGRAMMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD8..1FDB    ; Changes_When_Casefolded # L&   [4] GREEK CAPITAL LETTER IOTA WITH VRACHY..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE8..1FEC    ; Changes_When_Casefolded # L&   [5] GREEK CAPITAL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; Changes_When_Casefolded # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF7..1FFC    ; Changes_When_Casefolded # L&   [6] GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2126          ; Changes_When_Casefolded # L&       OHM SIGN
+212A..212B    ; Changes_When_Casefolded # L&   [2] KELVIN SIGN..ANGSTROM SIGN
+2132          ; Changes_When_Casefolded # L&       TURNED CAPITAL F
+2160..216F    ; Changes_When_Casefolded # Nl  [16] ROMAN NUMERAL ONE..ROMAN NUMERAL ONE THOUSAND
+2183          ; Changes_When_Casefolded # L&       ROMAN NUMERAL REVERSED ONE HUNDRED
+24B6..24CF    ; Changes_When_Casefolded # So  [26] CIRCLED LATIN CAPITAL LETTER A..CIRCLED LATIN CAPITAL LETTER Z
+2C00..2C2F    ; Changes_When_Casefolded # L&  [48] GLAGOLITIC CAPITAL LETTER AZU..GLAGOLITIC CAPITAL LETTER CAUDATE CHRIVI
+2C60          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH DOUBLE BAR
+2C62..2C64    ; Changes_When_Casefolded # L&   [3] LATIN CAPITAL LETTER L WITH MIDDLE TILDE..LATIN CAPITAL LETTER R WITH TAIL
+2C67          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER H WITH DESCENDER
+2C69          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH DESCENDER
+2C6B          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Z WITH DESCENDER
+2C6D..2C70    ; Changes_When_Casefolded # L&   [4] LATIN CAPITAL LETTER ALPHA..LATIN CAPITAL LETTER TURNED ALPHA
+2C72          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER W WITH HOOK
+2C75          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER HALF H
+2C7E..2C80    ; Changes_When_Casefolded # L&   [3] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC CAPITAL LETTER ALFA
+2C82          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER VIDA
+2C84          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER GAMMA
+2C86          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER DALDA
+2C88          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER EIE
+2C8A          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER SOU
+2C8C          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER ZATA
+2C8E          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER HATE
+2C90          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER THETHE
+2C92          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER IAUDA
+2C94          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER KAPA
+2C96          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER LAULA
+2C98          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER MI
+2C9A          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER NI
+2C9C          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER KSI
+2C9E          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER O
+2CA0          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER PI
+2CA2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER RO
+2CA4          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER SIMA
+2CA6          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER TAU
+2CA8          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER UA
+2CAA          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER FI
+2CAC          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER KHI
+2CAE          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER PSI
+2CB0          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OOU
+2CB2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER DIALECT-P ALEF
+2CB4          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC AIN
+2CB6          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC EIE
+2CB8          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER DIALECT-P KAPA
+2CBA          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER DIALECT-P NI
+2CBC          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC NI
+2CBE          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC OOU
+2CC0          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER SAMPI
+2CC2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER CROSSED SHEI
+2CC4          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC SHEI
+2CC6          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC ESH
+2CC8          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER AKHMIMIC KHEI
+2CCA          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER DIALECT-P HORI
+2CCC          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC HORI
+2CCE          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC HA
+2CD0          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER L-SHAPED HA
+2CD2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC HEI
+2CD4          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC HAT
+2CD6          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC GANGIA
+2CD8          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC DJA
+2CDA          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD COPTIC SHIMA
+2CDC          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD NUBIAN SHIMA
+2CDE          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD NUBIAN NGI
+2CE0          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD NUBIAN NYI
+2CE2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER OLD NUBIAN WAU
+2CEB          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI
+2CED          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER CRYPTOGRAMMIC GANGIA
+2CF2          ; Changes_When_Casefolded # L&       COPTIC CAPITAL LETTER BOHAIRIC KHEI
+A640          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ZEMLYA
+A642          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DZELO
+A644          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER REVERSED DZE
+A646          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTA
+A648          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DJERV
+A64A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER MONOGRAPH UK
+A64C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BROAD OMEGA
+A64E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER NEUTRAL YER
+A650          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER YERU WITH BACK YER
+A652          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTIFIED YAT
+A654          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER REVERSED YU
+A656          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTIFIED A
+A658          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER CLOSED LITTLE YUS
+A65A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BLENDED YUS
+A65C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER IOTIFIED CLOSED LITTLE YUS
+A65E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER YN
+A660          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER REVERSED TSE
+A662          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SOFT DE
+A664          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SOFT EL
+A666          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SOFT EM
+A668          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER MONOCULAR O
+A66A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER BINOCULAR O
+A66C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DOUBLE MONOCULAR O
+A680          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DWE
+A682          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DZWE
+A684          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER ZHWE
+A686          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER CCHE
+A688          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DZZE
+A68A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER TE WITH MIDDLE HOOK
+A68C          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER TWE
+A68E          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER TSWE
+A690          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER TSSE
+A692          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER TCHE
+A694          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER HWE
+A696          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER SHWE
+A698          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER DOUBLE O
+A69A          ; Changes_When_Casefolded # L&       CYRILLIC CAPITAL LETTER CROSSED O
+A722          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF
+A724          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER EGYPTOLOGICAL AIN
+A726          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER HENG
+A728          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER TZ
+A72A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER TRESILLO
+A72C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER CUATRILLO
+A72E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER CUATRILLO WITH COMMA
+A732          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AA
+A734          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AO
+A736          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AU
+A738          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AV
+A73A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AV WITH HORIZONTAL BAR
+A73C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER AY
+A73E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER REVERSED C WITH DOT
+A740          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH STROKE
+A742          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH DIAGONAL STROKE
+A744          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH STROKE AND DIAGONAL STROKE
+A746          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER BROKEN L
+A748          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER L WITH HIGH STROKE
+A74A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH LONG STROKE OVERLAY
+A74C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER O WITH LOOP
+A74E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER OO
+A750          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER P WITH STROKE THROUGH DESCENDER
+A752          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER P WITH FLOURISH
+A754          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER P WITH SQUIRREL TAIL
+A756          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Q WITH STROKE THROUGH DESCENDER
+A758          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER Q WITH DIAGONAL STROKE
+A75A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R ROTUNDA
+A75C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER RUM ROTUNDA
+A75E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER V WITH DIAGONAL STROKE
+A760          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER VY
+A762          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER VISIGOTHIC Z
+A764          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER THORN WITH STROKE
+A766          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER THORN WITH STROKE THROUGH DESCENDER
+A768          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER VEND
+A76A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER ET
+A76C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER IS
+A76E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER CON
+A779          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER INSULAR D
+A77B          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER INSULAR F
+A77D..A77E    ; Changes_When_Casefolded # L&   [2] LATIN CAPITAL LETTER INSULAR G..LATIN CAPITAL LETTER TURNED INSULAR G
+A780          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER TURNED L
+A782          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER INSULAR R
+A784          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER INSULAR S
+A786          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER INSULAR T
+A78B          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER SALTILLO
+A78D          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER TURNED H
+A790          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH DESCENDER
+A792          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER C WITH BAR
+A796          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER B WITH FLOURISH
+A798          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER F WITH STROKE
+A79A          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER VOLAPUK AE
+A79C          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER VOLAPUK OE
+A79E          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER VOLAPUK UE
+A7A0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER G WITH OBLIQUE STROKE
+A7A2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER K WITH OBLIQUE STROKE
+A7A4          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER N WITH OBLIQUE STROKE
+A7A6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER R WITH OBLIQUE STROKE
+A7A8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH OBLIQUE STROKE
+A7AA..A7AE    ; Changes_When_Casefolded # L&   [5] LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPITAL LETTER SMALL CAPITAL I
+A7B0..A7B4    ; Changes_When_Casefolded # L&   [5] LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL LETTER BETA
+A7B6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER OMEGA
+A7B8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER U WITH STROKE
+A7BA          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER GLOTTAL A
+A7BC          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER GLOTTAL I
+A7BE          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER GLOTTAL U
+A7C0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER OLD POLISH O
+A7C2          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER ANGLICANA W
+A7C4..A7C7    ; Changes_When_Casefolded # L&   [4] LATIN CAPITAL LETTER C WITH PALATAL HOOK..LATIN CAPITAL LETTER D WITH SHORT STROKE OVERLAY
+A7C9          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER S WITH SHORT STROKE OVERLAY
+A7D0          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER CLOSED INSULAR G
+A7D6          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER MIDDLE SCOTS S
+A7D8          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER SIGMOID S
+A7F5          ; Changes_When_Casefolded # L&       LATIN CAPITAL LETTER REVERSED HALF H
+AB70..ABBF    ; Changes_When_Casefolded # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Changes_When_Casefolded # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Changes_When_Casefolded # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF21..FF3A    ; Changes_When_Casefolded # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+10400..10427  ; Changes_When_Casefolded # L&  [40] DESERET CAPITAL LETTER LONG I..DESERET CAPITAL LETTER EW
+104B0..104D3  ; Changes_When_Casefolded # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+10570..1057A  ; Changes_When_Casefolded # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Changes_When_Casefolded # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Changes_When_Casefolded # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Changes_When_Casefolded # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10C80..10CB2  ; Changes_When_Casefolded # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+118A0..118BF  ; Changes_When_Casefolded # L&  [32] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI CAPITAL LETTER VIYO
+16E40..16E5F  ; Changes_When_Casefolded # L&  [32] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAPITAL LETTER Y
+1E900..1E921  ; Changes_When_Casefolded # L&  [34] ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETTER SHA
+
+# Total code points: 1506
+
+# ================================================
+
+# Derived Property:   Changes_When_Casemapped (CWCM)
+#  Characters whose normalized forms are not stable under case mapping.
+#  For more information, see D143 in Section 3.13, "Default Case Algorithms".
+#  Changes_When_Casemapped(X) is true when CWL(X), or CWT(X), or CWU(X)
+
+0041..005A    ; Changes_When_Casemapped # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+0061..007A    ; Changes_When_Casemapped # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00B5          ; Changes_When_Casemapped # L&       MICRO SIGN
+00C0..00D6    ; Changes_When_Casemapped # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; Changes_When_Casemapped # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..0137    ; Changes_When_Casemapped # L&  [64] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER K WITH CEDILLA
+0139..018C    ; Changes_When_Casemapped # L&  [84] LATIN CAPITAL LETTER L WITH ACUTE..LATIN SMALL LETTER D WITH TOPBAR
+018E..019A    ; Changes_When_Casemapped # L&  [13] LATIN CAPITAL LETTER REVERSED E..LATIN SMALL LETTER L WITH BAR
+019C..01A9    ; Changes_When_Casemapped # L&  [14] LATIN CAPITAL LETTER TURNED M..LATIN CAPITAL LETTER ESH
+01AC..01B9    ; Changes_When_Casemapped # L&  [14] LATIN CAPITAL LETTER T WITH HOOK..LATIN SMALL LETTER EZH REVERSED
+01BC..01BD    ; Changes_When_Casemapped # L&   [2] LATIN CAPITAL LETTER TONE FIVE..LATIN SMALL LETTER TONE FIVE
+01BF          ; Changes_When_Casemapped # L&       LATIN LETTER WYNN
+01C4..0220    ; Changes_When_Casemapped # L&  [93] LATIN CAPITAL LETTER DZ WITH CARON..LATIN CAPITAL LETTER N WITH LONG RIGHT LEG
+0222..0233    ; Changes_When_Casemapped # L&  [18] LATIN CAPITAL LETTER OU..LATIN SMALL LETTER Y WITH MACRON
+023A..0254    ; Changes_When_Casemapped # L&  [27] LATIN CAPITAL LETTER A WITH STROKE..LATIN SMALL LETTER OPEN O
+0256..0257    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER D WITH TAIL..LATIN SMALL LETTER D WITH HOOK
+0259          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER SCHWA
+025B..025C    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER OPEN E..LATIN SMALL LETTER REVERSED OPEN E
+0260..0261    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER G WITH HOOK..LATIN SMALL LETTER SCRIPT G
+0263          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER GAMMA
+0265..0266    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER TURNED H..LATIN SMALL LETTER H WITH HOOK
+0268..026C    ; Changes_When_Casemapped # L&   [5] LATIN SMALL LETTER I WITH STROKE..LATIN SMALL LETTER L WITH BELT
+026F          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER TURNED M
+0271..0272    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER M WITH HOOK..LATIN SMALL LETTER N WITH LEFT HOOK
+0275          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER BARRED O
+027D          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER R WITH TAIL
+0280          ; Changes_When_Casemapped # L&       LATIN LETTER SMALL CAPITAL R
+0282..0283    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER S WITH HOOK..LATIN SMALL LETTER ESH
+0287..028C    ; Changes_When_Casemapped # L&   [6] LATIN SMALL LETTER TURNED T..LATIN SMALL LETTER TURNED V
+0292          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER EZH
+029D..029E    ; Changes_When_Casemapped # L&   [2] LATIN SMALL LETTER J WITH CROSSED-TAIL..LATIN SMALL LETTER TURNED K
+0345          ; Changes_When_Casemapped # Mn       COMBINING GREEK YPOGEGRAMMENI
+0370..0373    ; Changes_When_Casemapped # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0376..0377    ; Changes_When_Casemapped # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037B..037D    ; Changes_When_Casemapped # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; Changes_When_Casemapped # L&       GREEK CAPITAL LETTER YOT
+0386          ; Changes_When_Casemapped # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Changes_When_Casemapped # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Changes_When_Casemapped # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; Changes_When_Casemapped # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03D1    ; Changes_When_Casemapped # L&  [47] GREEK CAPITAL LETTER SIGMA..GREEK THETA SYMBOL
+03D5..03F5    ; Changes_When_Casemapped # L&  [33] GREEK PHI SYMBOL..GREEK LUNATE EPSILON SYMBOL
+03F7..03FB    ; Changes_When_Casemapped # L&   [5] GREEK CAPITAL LETTER SHO..GREEK SMALL LETTER SAN
+03FD..0481    ; Changes_When_Casemapped # L& [133] GREEK CAPITAL REVERSED LUNATE SIGMA SYMBOL..CYRILLIC SMALL LETTER KOPPA
+048A..052F    ; Changes_When_Casemapped # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; Changes_When_Casemapped # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0561..0587    ; Changes_When_Casemapped # L&  [39] ARMENIAN SMALL LETTER AYB..ARMENIAN SMALL LIGATURE ECH YIWN
+10A0..10C5    ; Changes_When_Casemapped # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Changes_When_Casemapped # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Changes_When_Casemapped # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; Changes_When_Casemapped # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FD..10FF    ; Changes_When_Casemapped # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+13A0..13F5    ; Changes_When_Casemapped # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; Changes_When_Casemapped # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Changes_When_Casemapped # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; Changes_When_Casemapped # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Changes_When_Casemapped # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1D79          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER INSULAR G
+1D7D          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER P WITH STROKE
+1D8E          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER Z WITH PALATAL HOOK
+1E00..1E9B    ; Changes_When_Casemapped # L& [156] LATIN CAPITAL LETTER A WITH RING BELOW..LATIN SMALL LETTER LONG S WITH DOT ABOVE
+1E9E          ; Changes_When_Casemapped # L&       LATIN CAPITAL LETTER SHARP S
+1EA0..1F15    ; Changes_When_Casemapped # L& [118] LATIN CAPITAL LETTER A WITH DOT BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; Changes_When_Casemapped # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; Changes_When_Casemapped # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; Changes_When_Casemapped # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Changes_When_Casemapped # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; Changes_When_Casemapped # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Changes_When_Casemapped # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Changes_When_Casemapped # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; Changes_When_Casemapped # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; Changes_When_Casemapped # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; Changes_When_Casemapped # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; Changes_When_Casemapped # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Changes_When_Casemapped # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; Changes_When_Casemapped # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; Changes_When_Casemapped # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; Changes_When_Casemapped # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; Changes_When_Casemapped # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; Changes_When_Casemapped # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; Changes_When_Casemapped # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2126          ; Changes_When_Casemapped # L&       OHM SIGN
+212A..212B    ; Changes_When_Casemapped # L&   [2] KELVIN SIGN..ANGSTROM SIGN
+2132          ; Changes_When_Casemapped # L&       TURNED CAPITAL F
+214E          ; Changes_When_Casemapped # L&       TURNED SMALL F
+2160..217F    ; Changes_When_Casemapped # Nl  [32] ROMAN NUMERAL ONE..SMALL ROMAN NUMERAL ONE THOUSAND
+2183..2184    ; Changes_When_Casemapped # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+24B6..24E9    ; Changes_When_Casemapped # So  [52] CIRCLED LATIN CAPITAL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2C00..2C70    ; Changes_When_Casemapped # L& [113] GLAGOLITIC CAPITAL LETTER AZU..LATIN CAPITAL LETTER TURNED ALPHA
+2C72..2C73    ; Changes_When_Casemapped # L&   [2] LATIN CAPITAL LETTER W WITH HOOK..LATIN SMALL LETTER W WITH HOOK
+2C75..2C76    ; Changes_When_Casemapped # L&   [2] LATIN CAPITAL LETTER HALF H..LATIN SMALL LETTER HALF H
+2C7E..2CE3    ; Changes_When_Casemapped # L& [102] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SMALL LETTER OLD NUBIAN WAU
+2CEB..2CEE    ; Changes_When_Casemapped # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF2..2CF3    ; Changes_When_Casemapped # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Changes_When_Casemapped # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Changes_When_Casemapped # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Changes_When_Casemapped # L&       GEORGIAN SMALL LETTER AEN
+A640..A66D    ; Changes_When_Casemapped # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A680..A69B    ; Changes_When_Casemapped # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A722..A72F    ; Changes_When_Casemapped # L&  [14] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CUATRILLO WITH COMMA
+A732..A76F    ; Changes_When_Casemapped # L&  [62] LATIN CAPITAL LETTER AA..LATIN SMALL LETTER CON
+A779..A787    ; Changes_When_Casemapped # L&  [15] LATIN CAPITAL LETTER INSULAR D..LATIN SMALL LETTER INSULAR T
+A78B..A78D    ; Changes_When_Casemapped # L&   [3] LATIN CAPITAL LETTER SALTILLO..LATIN CAPITAL LETTER TURNED H
+A790..A794    ; Changes_When_Casemapped # L&   [5] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER C WITH PALATAL HOOK
+A796..A7AE    ; Changes_When_Casemapped # L&  [25] LATIN CAPITAL LETTER B WITH FLOURISH..LATIN CAPITAL LETTER SMALL CAPITAL I
+A7B0..A7CA    ; Changes_When_Casemapped # L&  [27] LATIN CAPITAL LETTER TURNED K..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; Changes_When_Casemapped # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D6..A7D9    ; Changes_When_Casemapped # L&   [4] LATIN CAPITAL LETTER MIDDLE SCOTS S..LATIN SMALL LETTER SIGMOID S
+A7F5..A7F6    ; Changes_When_Casemapped # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+AB53          ; Changes_When_Casemapped # L&       LATIN SMALL LETTER CHI
+AB70..ABBF    ; Changes_When_Casemapped # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Changes_When_Casemapped # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Changes_When_Casemapped # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF21..FF3A    ; Changes_When_Casemapped # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF41..FF5A    ; Changes_When_Casemapped # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+10400..1044F  ; Changes_When_Casemapped # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+104B0..104D3  ; Changes_When_Casemapped # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; Changes_When_Casemapped # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10570..1057A  ; Changes_When_Casemapped # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Changes_When_Casemapped # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Changes_When_Casemapped # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Changes_When_Casemapped # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; Changes_When_Casemapped # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Changes_When_Casemapped # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Changes_When_Casemapped # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Changes_When_Casemapped # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10C80..10CB2  ; Changes_When_Casemapped # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; Changes_When_Casemapped # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+118A0..118DF  ; Changes_When_Casemapped # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+16E40..16E7F  ; Changes_When_Casemapped # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+1E900..1E943  ; Changes_When_Casemapped # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+
+# Total code points: 2927
+
+# ================================================
+
+# Derived Property: ID_Start
+#  Characters that can start an identifier.
+#  Generated from:
+#      Lu + Ll + Lt + Lm + Lo + Nl
+#    + Other_ID_Start
+#    - Pattern_Syntax
+#    - Pattern_White_Space
+#  NOTE: See UAX #31 for more information
+
+0041..005A    ; ID_Start # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+0061..007A    ; ID_Start # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; ID_Start # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; ID_Start # L&       MICRO SIGN
+00BA          ; ID_Start # Lo       MASCULINE ORDINAL INDICATOR
+00C0..00D6    ; ID_Start # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; ID_Start # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..01BA    ; ID_Start # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BB          ; ID_Start # Lo       LATIN LETTER TWO WITH STROKE
+01BC..01BF    ; ID_Start # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C0..01C3    ; ID_Start # Lo   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+01C4..0293    ; ID_Start # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0294          ; ID_Start # Lo       LATIN LETTER GLOTTAL STOP
+0295..02AF    ; ID_Start # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02C1    ; ID_Start # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C6..02D1    ; ID_Start # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02E0..02E4    ; ID_Start # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02EC          ; ID_Start # Lm       MODIFIER LETTER VOICING
+02EE          ; ID_Start # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+0370..0373    ; ID_Start # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0374          ; ID_Start # Lm       GREEK NUMERAL SIGN
+0376..0377    ; ID_Start # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037A          ; ID_Start # Lm       GREEK YPOGEGRAMMENI
+037B..037D    ; ID_Start # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; ID_Start # L&       GREEK CAPITAL LETTER YOT
+0386          ; ID_Start # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; ID_Start # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; ID_Start # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; ID_Start # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; ID_Start # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F7..0481    ; ID_Start # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+048A..052F    ; ID_Start # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; ID_Start # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0559          ; ID_Start # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+0560..0588    ; ID_Start # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+05D0..05EA    ; ID_Start # Lo  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; ID_Start # Lo   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+0620..063F    ; ID_Start # Lo  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0640          ; ID_Start # Lm       ARABIC TATWEEL
+0641..064A    ; ID_Start # Lo  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+066E..066F    ; ID_Start # Lo   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0671..06D3    ; ID_Start # Lo  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D5          ; ID_Start # Lo       ARABIC LETTER AE
+06E5..06E6    ; ID_Start # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06EE..06EF    ; ID_Start # Lo   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06FA..06FC    ; ID_Start # Lo   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FF          ; ID_Start # Lo       ARABIC LETTER HEH WITH INVERTED V
+0710          ; ID_Start # Lo       SYRIAC LETTER ALAPH
+0712..072F    ; ID_Start # Lo  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+074D..07A5    ; ID_Start # Lo  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07B1          ; ID_Start # Lo       THAANA LETTER NAA
+07CA..07EA    ; ID_Start # Lo  [33] NKO LETTER A..NKO LETTER JONA RA
+07F4..07F5    ; ID_Start # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; ID_Start # Lm       NKO LAJANYALAN
+0800..0815    ; ID_Start # Lo  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+081A          ; ID_Start # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+0824          ; ID_Start # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0828          ; ID_Start # Lm       SAMARITAN MODIFIER LETTER I
+0840..0858    ; ID_Start # Lo  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+0860..086A    ; ID_Start # Lo  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; ID_Start # Lo  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0889..088E    ; ID_Start # Lo   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+08A0..08C8    ; ID_Start # Lo  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+08C9          ; ID_Start # Lm       ARABIC SMALL FARSI YEH
+0904..0939    ; ID_Start # Lo  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093D          ; ID_Start # Lo       DEVANAGARI SIGN AVAGRAHA
+0950          ; ID_Start # Lo       DEVANAGARI OM
+0958..0961    ; ID_Start # Lo  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0971          ; ID_Start # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0972..0980    ; ID_Start # Lo  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0985..098C    ; ID_Start # Lo   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; ID_Start # Lo   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; ID_Start # Lo  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; ID_Start # Lo   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; ID_Start # Lo       BENGALI LETTER LA
+09B6..09B9    ; ID_Start # Lo   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BD          ; ID_Start # Lo       BENGALI SIGN AVAGRAHA
+09CE          ; ID_Start # Lo       BENGALI LETTER KHANDA TA
+09DC..09DD    ; ID_Start # Lo   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; ID_Start # Lo   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09F0..09F1    ; ID_Start # Lo   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09FC          ; ID_Start # Lo       BENGALI LETTER VEDIC ANUSVARA
+0A05..0A0A    ; ID_Start # Lo   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; ID_Start # Lo   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; ID_Start # Lo  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; ID_Start # Lo   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; ID_Start # Lo   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; ID_Start # Lo   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; ID_Start # Lo   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A59..0A5C    ; ID_Start # Lo   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; ID_Start # Lo       GURMUKHI LETTER FA
+0A72..0A74    ; ID_Start # Lo   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A85..0A8D    ; ID_Start # Lo   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; ID_Start # Lo   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; ID_Start # Lo  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; ID_Start # Lo   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; ID_Start # Lo   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; ID_Start # Lo   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABD          ; ID_Start # Lo       GUJARATI SIGN AVAGRAHA
+0AD0          ; ID_Start # Lo       GUJARATI OM
+0AE0..0AE1    ; ID_Start # Lo   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AF9          ; ID_Start # Lo       GUJARATI LETTER ZHA
+0B05..0B0C    ; ID_Start # Lo   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; ID_Start # Lo   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; ID_Start # Lo  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; ID_Start # Lo   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; ID_Start # Lo   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; ID_Start # Lo   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3D          ; ID_Start # Lo       ORIYA SIGN AVAGRAHA
+0B5C..0B5D    ; ID_Start # Lo   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; ID_Start # Lo   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B71          ; ID_Start # Lo       ORIYA LETTER WA
+0B83          ; ID_Start # Lo       TAMIL SIGN VISARGA
+0B85..0B8A    ; ID_Start # Lo   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; ID_Start # Lo   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; ID_Start # Lo   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; ID_Start # Lo   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; ID_Start # Lo       TAMIL LETTER JA
+0B9E..0B9F    ; ID_Start # Lo   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; ID_Start # Lo   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; ID_Start # Lo   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; ID_Start # Lo  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BD0          ; ID_Start # Lo       TAMIL OM
+0C05..0C0C    ; ID_Start # Lo   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; ID_Start # Lo   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; ID_Start # Lo  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; ID_Start # Lo  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3D          ; ID_Start # Lo       TELUGU SIGN AVAGRAHA
+0C58..0C5A    ; ID_Start # Lo   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; ID_Start # Lo       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; ID_Start # Lo   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C80          ; ID_Start # Lo       KANNADA SIGN SPACING CANDRABINDU
+0C85..0C8C    ; ID_Start # Lo   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; ID_Start # Lo   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; ID_Start # Lo  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; ID_Start # Lo  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; ID_Start # Lo   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBD          ; ID_Start # Lo       KANNADA SIGN AVAGRAHA
+0CDD..0CDE    ; ID_Start # Lo   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; ID_Start # Lo   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CF1..0CF2    ; ID_Start # Lo   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0D04..0D0C    ; ID_Start # Lo   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; ID_Start # Lo   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; ID_Start # Lo  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3D          ; ID_Start # Lo       MALAYALAM SIGN AVAGRAHA
+0D4E          ; ID_Start # Lo       MALAYALAM LETTER DOT REPH
+0D54..0D56    ; ID_Start # Lo   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D5F..0D61    ; ID_Start # Lo   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D7A..0D7F    ; ID_Start # Lo   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D85..0D96    ; ID_Start # Lo  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; ID_Start # Lo  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; ID_Start # Lo   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; ID_Start # Lo       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; ID_Start # Lo   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0E01..0E30    ; ID_Start # Lo  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E32..0E33    ; ID_Start # Lo   [2] THAI CHARACTER SARA AA..THAI CHARACTER SARA AM
+0E40..0E45    ; ID_Start # Lo   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E46          ; ID_Start # Lm       THAI CHARACTER MAIYAMOK
+0E81..0E82    ; ID_Start # Lo   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; ID_Start # Lo       LAO LETTER KHO TAM
+0E86..0E8A    ; ID_Start # Lo   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; ID_Start # Lo  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; ID_Start # Lo       LAO LETTER LO LOOT
+0EA7..0EB0    ; ID_Start # Lo  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB2..0EB3    ; ID_Start # Lo   [2] LAO VOWEL SIGN AA..LAO VOWEL SIGN AM
+0EBD          ; ID_Start # Lo       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; ID_Start # Lo   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EC6          ; ID_Start # Lm       LAO KO LA
+0EDC..0EDF    ; ID_Start # Lo   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; ID_Start # Lo       TIBETAN SYLLABLE OM
+0F40..0F47    ; ID_Start # Lo   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; ID_Start # Lo  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F88..0F8C    ; ID_Start # Lo   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+1000..102A    ; ID_Start # Lo  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+103F          ; ID_Start # Lo       MYANMAR LETTER GREAT SA
+1050..1055    ; ID_Start # Lo   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+105A..105D    ; ID_Start # Lo   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+1061          ; ID_Start # Lo       MYANMAR LETTER SGAW KAREN SHA
+1065..1066    ; ID_Start # Lo   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+106E..1070    ; ID_Start # Lo   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1075..1081    ; ID_Start # Lo  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+108E          ; ID_Start # Lo       MYANMAR LETTER RUMAI PALAUNG FA
+10A0..10C5    ; ID_Start # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; ID_Start # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; ID_Start # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; ID_Start # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; ID_Start # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; ID_Start # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+1100..1248    ; ID_Start # Lo [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; ID_Start # Lo       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; ID_Start # Lo  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; ID_Start # Lo  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; ID_Start # Lo       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; ID_Start # Lo  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; ID_Start # Lo  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; ID_Start # Lo  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+1380..138F    ; ID_Start # Lo  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+13A0..13F5    ; ID_Start # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; ID_Start # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1401..166C    ; ID_Start # Lo [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166F..167F    ; ID_Start # Lo  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1681..169A    ; ID_Start # Lo  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+16A0..16EA    ; ID_Start # Lo  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16EE..16F0    ; ID_Start # Nl   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+16F1..16F8    ; ID_Start # Lo   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; ID_Start # Lo  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+171F..1731    ; ID_Start # Lo  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1740..1751    ; ID_Start # Lo  [18] BUHID LETTER A..BUHID LETTER HA
+1760..176C    ; ID_Start # Lo  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; ID_Start # Lo   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1780..17B3    ; ID_Start # Lo  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17D7          ; ID_Start # Lm       KHMER SIGN LEK TOO
+17DC          ; ID_Start # Lo       KHMER SIGN AVAKRAHASANYA
+1820..1842    ; ID_Start # Lo  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1843          ; ID_Start # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1844..1878    ; ID_Start # Lo  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; ID_Start # Lo   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1885..1886    ; ID_Start # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+1887..18A8    ; ID_Start # Lo  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18AA          ; ID_Start # Lo       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; ID_Start # Lo  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; ID_Start # Lo  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1950..196D    ; ID_Start # Lo  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; ID_Start # Lo   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; ID_Start # Lo  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; ID_Start # Lo  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+1A00..1A16    ; ID_Start # Lo  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A20..1A54    ; ID_Start # Lo  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1AA7          ; ID_Start # Lm       TAI THAM SIGN MAI YAMOK
+1B05..1B33    ; ID_Start # Lo  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B45..1B4C    ; ID_Start # Lo   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B83..1BA0    ; ID_Start # Lo  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BAE..1BAF    ; ID_Start # Lo   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BBA..1BE5    ; ID_Start # Lo  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1C00..1C23    ; ID_Start # Lo  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C4D..1C4F    ; ID_Start # Lo   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C5A..1C77    ; ID_Start # Lo  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1C78..1C7D    ; ID_Start # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1C80..1C88    ; ID_Start # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; ID_Start # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; ID_Start # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1CE9..1CEC    ; ID_Start # Lo   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CEE..1CF3    ; ID_Start # Lo   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF5..1CF6    ; ID_Start # Lo   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CFA          ; ID_Start # Lo       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+1D00..1D2B    ; ID_Start # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; ID_Start # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; ID_Start # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; ID_Start # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; ID_Start # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; ID_Start # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1E00..1F15    ; ID_Start # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; ID_Start # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; ID_Start # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; ID_Start # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; ID_Start # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; ID_Start # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; ID_Start # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; ID_Start # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; ID_Start # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; ID_Start # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; ID_Start # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; ID_Start # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; ID_Start # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; ID_Start # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; ID_Start # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; ID_Start # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; ID_Start # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; ID_Start # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; ID_Start # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2071          ; ID_Start # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; ID_Start # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; ID_Start # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+2102          ; ID_Start # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; ID_Start # L&       EULER CONSTANT
+210A..2113    ; ID_Start # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; ID_Start # L&       DOUBLE-STRUCK CAPITAL N
+2118          ; ID_Start # Sm       SCRIPT CAPITAL P
+2119..211D    ; ID_Start # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; ID_Start # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; ID_Start # L&       OHM SIGN
+2128          ; ID_Start # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; ID_Start # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212E          ; ID_Start # So       ESTIMATED SYMBOL
+212F..2134    ; ID_Start # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2135..2138    ; ID_Start # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+2139          ; ID_Start # L&       INFORMATION SOURCE
+213C..213F    ; ID_Start # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2145..2149    ; ID_Start # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; ID_Start # L&       TURNED SMALL F
+2160..2182    ; ID_Start # Nl  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2183..2184    ; ID_Start # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+2185..2188    ; ID_Start # Nl   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+2C00..2C7B    ; ID_Start # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; ID_Start # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; ID_Start # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CEB..2CEE    ; ID_Start # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF2..2CF3    ; ID_Start # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; ID_Start # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; ID_Start # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; ID_Start # L&       GEORGIAN SMALL LETTER AEN
+2D30..2D67    ; ID_Start # Lo  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D6F          ; ID_Start # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D80..2D96    ; ID_Start # Lo  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+3005          ; ID_Start # Lm       IDEOGRAPHIC ITERATION MARK
+3006          ; ID_Start # Lo       IDEOGRAPHIC CLOSING MARK
+3007          ; ID_Start # Nl       IDEOGRAPHIC NUMBER ZERO
+3021..3029    ; ID_Start # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+3031..3035    ; ID_Start # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+3038..303A    ; ID_Start # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+303B          ; ID_Start # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+303C          ; ID_Start # Lo       MASU MARK
+3041..3096    ; ID_Start # Lo  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+309B..309C    ; ID_Start # Sk   [2] KATAKANA-HIRAGANA VOICED SOUND MARK..KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309D..309E    ; ID_Start # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+309F          ; ID_Start # Lo       HIRAGANA DIGRAPH YORI
+30A1..30FA    ; ID_Start # Lo  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FC..30FE    ; ID_Start # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+30FF          ; ID_Start # Lo       KATAKANA DIGRAPH KOTO
+3105..312F    ; ID_Start # Lo  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; ID_Start # Lo  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+31A0..31BF    ; ID_Start # Lo  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31F0..31FF    ; ID_Start # Lo  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3400..4DBF    ; ID_Start # Lo [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4E00..A014    ; ID_Start # Lo [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A015          ; ID_Start # Lm       YI SYLLABLE WU
+A016..A48C    ; ID_Start # Lo [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A4D0..A4F7    ; ID_Start # Lo  [40] LISU LETTER BA..LISU LETTER OE
+A4F8..A4FD    ; ID_Start # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A500..A60B    ; ID_Start # Lo [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A60C          ; ID_Start # Lm       VAI SYLLABLE LENGTHENER
+A610..A61F    ; ID_Start # Lo  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A62A..A62B    ; ID_Start # Lo   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A640..A66D    ; ID_Start # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A66E          ; ID_Start # Lo       CYRILLIC LETTER MULTIOCULAR O
+A67F          ; ID_Start # Lm       CYRILLIC PAYEROK
+A680..A69B    ; ID_Start # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; ID_Start # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A6A0..A6E5    ; ID_Start # Lo  [70] BAMUM LETTER A..BAMUM LETTER KI
+A6E6..A6EF    ; ID_Start # Nl  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+A717..A71F    ; ID_Start # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A722..A76F    ; ID_Start # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; ID_Start # Lm       MODIFIER LETTER US
+A771..A787    ; ID_Start # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A788          ; ID_Start # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A78B..A78E    ; ID_Start # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A78F          ; ID_Start # Lo       LATIN LETTER SINOLOGICAL DOT
+A790..A7CA    ; ID_Start # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; ID_Start # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; ID_Start # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; ID_Start # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; ID_Start # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; ID_Start # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F7          ; ID_Start # Lo       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7F8..A7F9    ; ID_Start # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; ID_Start # L&       LATIN LETTER SMALL CAPITAL TURNED M
+A7FB..A801    ; ID_Start # Lo   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A803..A805    ; ID_Start # Lo   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A807..A80A    ; ID_Start # Lo   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80C..A822    ; ID_Start # Lo  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A840..A873    ; ID_Start # Lo  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A882..A8B3    ; ID_Start # Lo  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8F2..A8F7    ; ID_Start # Lo   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8FB          ; ID_Start # Lo       DEVANAGARI HEADSTROKE
+A8FD..A8FE    ; ID_Start # Lo   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A90A..A925    ; ID_Start # Lo  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A930..A946    ; ID_Start # Lo  [23] REJANG LETTER KA..REJANG LETTER A
+A960..A97C    ; ID_Start # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A984..A9B2    ; ID_Start # Lo  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9CF          ; ID_Start # Lm       JAVANESE PANGRANGKEP
+A9E0..A9E4    ; ID_Start # Lo   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E6          ; ID_Start # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+A9E7..A9EF    ; ID_Start # Lo   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9FA..A9FE    ; ID_Start # Lo   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; ID_Start # Lo  [41] CHAM LETTER A..CHAM LETTER HA
+AA40..AA42    ; ID_Start # Lo   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA44..AA4B    ; ID_Start # Lo   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA60..AA6F    ; ID_Start # Lo  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA70          ; ID_Start # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA71..AA76    ; ID_Start # Lo   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA7A          ; ID_Start # Lo       MYANMAR LETTER AITON RA
+AA7E..AAAF    ; ID_Start # Lo  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB1          ; ID_Start # Lo       TAI VIET VOWEL AA
+AAB5..AAB6    ; ID_Start # Lo   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB9..AABD    ; ID_Start # Lo   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AAC0          ; ID_Start # Lo       TAI VIET TONE MAI NUENG
+AAC2          ; ID_Start # Lo       TAI VIET TONE MAI SONG
+AADB..AADC    ; ID_Start # Lo   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AADD          ; ID_Start # Lm       TAI VIET SYMBOL SAM
+AAE0..AAEA    ; ID_Start # Lo  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAF2          ; ID_Start # Lo       MEETEI MAYEK ANJI
+AAF3..AAF4    ; ID_Start # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AB01..AB06    ; ID_Start # Lo   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; ID_Start # Lo   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; ID_Start # Lo   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+AB30..AB5A    ; ID_Start # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; ID_Start # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; ID_Start # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; ID_Start # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; ID_Start # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+ABC0..ABE2    ; ID_Start # Lo  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+AC00..D7A3    ; ID_Start # Lo [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; ID_Start # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; ID_Start # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; ID_Start # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; ID_Start # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB00..FB06    ; ID_Start # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; ID_Start # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FB1D          ; ID_Start # Lo       HEBREW LETTER YOD WITH HIRIQ
+FB1F..FB28    ; ID_Start # Lo  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB2A..FB36    ; ID_Start # Lo  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; ID_Start # Lo   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; ID_Start # Lo       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; ID_Start # Lo   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; ID_Start # Lo   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; ID_Start # Lo [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBD3..FD3D    ; ID_Start # Lo [363] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD50..FD8F    ; ID_Start # Lo  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; ID_Start # Lo  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDF0..FDFB    ; ID_Start # Lo  [12] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE JALLAJALALOUHOU
+FE70..FE74    ; ID_Start # Lo   [5] ARABIC FATHATAN ISOLATED FORM..ARABIC KASRATAN ISOLATED FORM
+FE76..FEFC    ; ID_Start # Lo [135] ARABIC FATHA ISOLATED FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF21..FF3A    ; ID_Start # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF41..FF5A    ; ID_Start # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+FF66..FF6F    ; ID_Start # Lo  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF70          ; ID_Start # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF71..FF9D    ; ID_Start # Lo  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FF9E..FF9F    ; ID_Start # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+FFA0..FFBE    ; ID_Start # Lo  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; ID_Start # Lo   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; ID_Start # Lo   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; ID_Start # Lo   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; ID_Start # Lo   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+10000..1000B  ; ID_Start # Lo  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; ID_Start # Lo  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; ID_Start # Lo  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; ID_Start # Lo   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; ID_Start # Lo  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; ID_Start # Lo  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; ID_Start # Lo [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10140..10174  ; ID_Start # Nl  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+10280..1029C  ; ID_Start # Lo  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; ID_Start # Lo  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+10300..1031F  ; ID_Start # Lo  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+1032D..10340  ; ID_Start # Lo  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10341         ; ID_Start # Nl       GOTHIC LETTER NINETY
+10342..10349  ; ID_Start # Lo   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+1034A         ; ID_Start # Nl       GOTHIC LETTER NINE HUNDRED
+10350..10375  ; ID_Start # Lo  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10380..1039D  ; ID_Start # Lo  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+103A0..103C3  ; ID_Start # Lo  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; ID_Start # Lo   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+103D1..103D5  ; ID_Start # Nl   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+10400..1044F  ; ID_Start # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+10450..1049D  ; ID_Start # Lo  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+104B0..104D3  ; ID_Start # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; ID_Start # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10500..10527  ; ID_Start # Lo  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; ID_Start # Lo  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+10570..1057A  ; ID_Start # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; ID_Start # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; ID_Start # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; ID_Start # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; ID_Start # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; ID_Start # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; ID_Start # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; ID_Start # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10600..10736  ; ID_Start # Lo [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; ID_Start # Lo  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; ID_Start # Lo   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10780..10785  ; ID_Start # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; ID_Start # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; ID_Start # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10800..10805  ; ID_Start # Lo   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; ID_Start # Lo       CYPRIOT SYLLABLE JO
+1080A..10835  ; ID_Start # Lo  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; ID_Start # Lo   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; ID_Start # Lo       CYPRIOT SYLLABLE ZA
+1083F..10855  ; ID_Start # Lo  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10860..10876  ; ID_Start # Lo  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10880..1089E  ; ID_Start # Lo  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108E0..108F2  ; ID_Start # Lo  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; ID_Start # Lo   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+10900..10915  ; ID_Start # Lo  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10920..10939  ; ID_Start # Lo  [26] LYDIAN LETTER A..LYDIAN LETTER C
+10980..109B7  ; ID_Start # Lo  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BE..109BF  ; ID_Start # Lo   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+10A00         ; ID_Start # Lo       KHAROSHTHI LETTER A
+10A10..10A13  ; ID_Start # Lo   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; ID_Start # Lo   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; ID_Start # Lo  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A60..10A7C  ; ID_Start # Lo  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A80..10A9C  ; ID_Start # Lo  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10AC0..10AC7  ; ID_Start # Lo   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC9..10AE4  ; ID_Start # Lo  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10B00..10B35  ; ID_Start # Lo  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B40..10B55  ; ID_Start # Lo  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B60..10B72  ; ID_Start # Lo  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B80..10B91  ; ID_Start # Lo  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10C00..10C48  ; ID_Start # Lo  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10C80..10CB2  ; ID_Start # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; ID_Start # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+10D00..10D23  ; ID_Start # Lo  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10E80..10EA9  ; ID_Start # Lo  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EB0..10EB1  ; ID_Start # Lo   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10F00..10F1C  ; ID_Start # Lo  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F27         ; ID_Start # Lo       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; ID_Start # Lo  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F70..10F81  ; ID_Start # Lo  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10FB0..10FC4  ; ID_Start # Lo  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FE0..10FF6  ; ID_Start # Lo  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11003..11037  ; ID_Start # Lo  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11071..11072  ; ID_Start # Lo   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11075         ; ID_Start # Lo       BRAHMI LETTER OLD TAMIL LLA
+11083..110AF  ; ID_Start # Lo  [45] KAITHI LETTER A..KAITHI LETTER HA
+110D0..110E8  ; ID_Start # Lo  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+11103..11126  ; ID_Start # Lo  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+11144         ; ID_Start # Lo       CHAKMA LETTER LHAA
+11147         ; ID_Start # Lo       CHAKMA LETTER VAA
+11150..11172  ; ID_Start # Lo  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11176         ; ID_Start # Lo       MAHAJANI LIGATURE SHRI
+11183..111B2  ; ID_Start # Lo  [48] SHARADA LETTER A..SHARADA LETTER HA
+111C1..111C4  ; ID_Start # Lo   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111DA         ; ID_Start # Lo       SHARADA EKAM
+111DC         ; ID_Start # Lo       SHARADA HEADSTROKE
+11200..11211  ; ID_Start # Lo  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; ID_Start # Lo  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1123F..11240  ; ID_Start # Lo   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11280..11286  ; ID_Start # Lo   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; ID_Start # Lo       MULTANI LETTER GHA
+1128A..1128D  ; ID_Start # Lo   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; ID_Start # Lo  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; ID_Start # Lo  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112B0..112DE  ; ID_Start # Lo  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+11305..1130C  ; ID_Start # Lo   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; ID_Start # Lo   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; ID_Start # Lo  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; ID_Start # Lo   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; ID_Start # Lo   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; ID_Start # Lo   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133D         ; ID_Start # Lo       GRANTHA SIGN AVAGRAHA
+11350         ; ID_Start # Lo       GRANTHA OM
+1135D..11361  ; ID_Start # Lo   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11400..11434  ; ID_Start # Lo  [53] NEWA LETTER A..NEWA LETTER HA
+11447..1144A  ; ID_Start # Lo   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+1145F..11461  ; ID_Start # Lo   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; ID_Start # Lo  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114C4..114C5  ; ID_Start # Lo   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C7         ; ID_Start # Lo       TIRHUTA OM
+11580..115AE  ; ID_Start # Lo  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115D8..115DB  ; ID_Start # Lo   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+11600..1162F  ; ID_Start # Lo  [48] MODI LETTER A..MODI LETTER LLA
+11644         ; ID_Start # Lo       MODI SIGN HUVA
+11680..116AA  ; ID_Start # Lo  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116B8         ; ID_Start # Lo       TAKRI LETTER ARCHAIC KHA
+11700..1171A  ; ID_Start # Lo  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+11740..11746  ; ID_Start # Lo   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; ID_Start # Lo  [44] DOGRA LETTER A..DOGRA LETTER RRA
+118A0..118DF  ; ID_Start # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+118FF..11906  ; ID_Start # Lo   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; ID_Start # Lo       DIVES AKURU LETTER O
+1190C..11913  ; ID_Start # Lo   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; ID_Start # Lo   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; ID_Start # Lo  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+1193F         ; ID_Start # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11941         ; ID_Start # Lo       DIVES AKURU INITIAL RA
+119A0..119A7  ; ID_Start # Lo   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; ID_Start # Lo  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119E1         ; ID_Start # Lo       NANDINAGARI SIGN AVAGRAHA
+119E3         ; ID_Start # Lo       NANDINAGARI HEADSTROKE
+11A00         ; ID_Start # Lo       ZANABAZAR SQUARE LETTER A
+11A0B..11A32  ; ID_Start # Lo  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A3A         ; ID_Start # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A50         ; ID_Start # Lo       SOYOMBO LETTER A
+11A5C..11A89  ; ID_Start # Lo  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A9D         ; ID_Start # Lo       SOYOMBO MARK PLUTA
+11AB0..11AF8  ; ID_Start # Lo  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11C00..11C08  ; ID_Start # Lo   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; ID_Start # Lo  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C40         ; ID_Start # Lo       BHAIKSUKI SIGN AVAGRAHA
+11C72..11C8F  ; ID_Start # Lo  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11D00..11D06  ; ID_Start # Lo   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; ID_Start # Lo   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; ID_Start # Lo  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D46         ; ID_Start # Lo       MASARAM GONDI REPHA
+11D60..11D65  ; ID_Start # Lo   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; ID_Start # Lo   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; ID_Start # Lo  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D98         ; ID_Start # Lo       GUNJALA GONDI OM
+11EE0..11EF2  ; ID_Start # Lo  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11F02         ; ID_Start # Lo       KAWI SIGN REPHA
+11F04..11F10  ; ID_Start # Lo  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; ID_Start # Lo  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11FB0         ; ID_Start # Lo       LISU LETTER YHA
+12000..12399  ; ID_Start # Lo [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12400..1246E  ; ID_Start # Nl [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+12480..12543  ; ID_Start # Lo [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; ID_Start # Lo  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+13000..1342F  ; ID_Start # Lo [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13441..13446  ; ID_Start # Lo   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+14400..14646  ; ID_Start # Lo [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; ID_Start # Lo [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; ID_Start # Lo  [31] MRO LETTER TA..MRO LETTER TEK
+16A70..16ABE  ; ID_Start # Lo  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AD0..16AED  ; ID_Start # Lo  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16B00..16B2F  ; ID_Start # Lo  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B40..16B43  ; ID_Start # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16B63..16B77  ; ID_Start # Lo  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; ID_Start # Lo  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16E40..16E7F  ; ID_Start # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+16F00..16F4A  ; ID_Start # Lo  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F50         ; ID_Start # Lo       MIAO LETTER NASALIZATION
+16F93..16F9F  ; ID_Start # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; ID_Start # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; ID_Start # Lm       OLD CHINESE ITERATION MARK
+17000..187F7  ; ID_Start # Lo [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; ID_Start # Lo [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; ID_Start # Lo   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1AFF0..1AFF3  ; ID_Start # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; ID_Start # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; ID_Start # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1B000..1B122  ; ID_Start # Lo [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; ID_Start # Lo       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; ID_Start # Lo   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; ID_Start # Lo       KATAKANA LETTER SMALL KO
+1B164..1B167  ; ID_Start # Lo   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; ID_Start # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; ID_Start # Lo [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; ID_Start # Lo  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; ID_Start # Lo   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; ID_Start # Lo  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1D400..1D454  ; ID_Start # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; ID_Start # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; ID_Start # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; ID_Start # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; ID_Start # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; ID_Start # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; ID_Start # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; ID_Start # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; ID_Start # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; ID_Start # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; ID_Start # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; ID_Start # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; ID_Start # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; ID_Start # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; ID_Start # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; ID_Start # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; ID_Start # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; ID_Start # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; ID_Start # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; ID_Start # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C2..1D6DA  ; ID_Start # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6FA  ; ID_Start # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FC..1D714  ; ID_Start # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D734  ; ID_Start # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D736..1D74E  ; ID_Start # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D76E  ; ID_Start # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D770..1D788  ; ID_Start # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D7A8  ; ID_Start # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7AA..1D7C2  ; ID_Start # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7CB  ; ID_Start # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1DF00..1DF09  ; ID_Start # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0A         ; ID_Start # Lo       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1DF0B..1DF1E  ; ID_Start # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; ID_Start # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E030..1E06D  ; ID_Start # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E100..1E12C  ; ID_Start # Lo  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E137..1E13D  ; ID_Start # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E14E         ; ID_Start # Lo       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E290..1E2AD  ; ID_Start # Lo  [30] TOTO LETTER PA..TOTO LETTER A
+1E2C0..1E2EB  ; ID_Start # Lo  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E4D0..1E4EA  ; ID_Start # Lo  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E4EB         ; ID_Start # Lm       NAG MUNDARI SIGN OJOD
+1E7E0..1E7E6  ; ID_Start # Lo   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; ID_Start # Lo   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; ID_Start # Lo   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; ID_Start # Lo  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; ID_Start # Lo [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1E900..1E943  ; ID_Start # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1E94B         ; ID_Start # Lm       ADLAM NASALIZATION MARK
+1EE00..1EE03  ; ID_Start # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; ID_Start # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; ID_Start # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; ID_Start # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; ID_Start # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; ID_Start # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; ID_Start # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; ID_Start # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; ID_Start # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; ID_Start # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; ID_Start # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; ID_Start # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; ID_Start # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; ID_Start # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; ID_Start # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; ID_Start # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; ID_Start # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; ID_Start # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; ID_Start # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; ID_Start # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; ID_Start # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; ID_Start # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; ID_Start # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; ID_Start # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+20000..2A6DF  ; ID_Start # Lo [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; ID_Start # Lo [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; ID_Start # Lo [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; ID_Start # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; ID_Start # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; ID_Start # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; ID_Start # Lo [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; ID_Start # Lo [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+
+# Total code points: 136345
+
+# ================================================
+
+# Derived Property: ID_Continue
+#  Characters that can continue an identifier.
+#  Generated from:
+#      ID_Start
+#    + Mn + Mc + Nd + Pc
+#    + Other_ID_Continue
+#    - Pattern_Syntax
+#    - Pattern_White_Space
+#  NOTE: See UAX #31 for more information
+
+0030..0039    ; ID_Continue # Nd  [10] DIGIT ZERO..DIGIT NINE
+0041..005A    ; ID_Continue # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+005F          ; ID_Continue # Pc       LOW LINE
+0061..007A    ; ID_Continue # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; ID_Continue # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; ID_Continue # L&       MICRO SIGN
+00B7          ; ID_Continue # Po       MIDDLE DOT
+00BA          ; ID_Continue # Lo       MASCULINE ORDINAL INDICATOR
+00C0..00D6    ; ID_Continue # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; ID_Continue # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..01BA    ; ID_Continue # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BB          ; ID_Continue # Lo       LATIN LETTER TWO WITH STROKE
+01BC..01BF    ; ID_Continue # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C0..01C3    ; ID_Continue # Lo   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+01C4..0293    ; ID_Continue # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0294          ; ID_Continue # Lo       LATIN LETTER GLOTTAL STOP
+0295..02AF    ; ID_Continue # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02C1    ; ID_Continue # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C6..02D1    ; ID_Continue # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02E0..02E4    ; ID_Continue # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02EC          ; ID_Continue # Lm       MODIFIER LETTER VOICING
+02EE          ; ID_Continue # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+0300..036F    ; ID_Continue # Mn [112] COMBINING GRAVE ACCENT..COMBINING LATIN SMALL LETTER X
+0370..0373    ; ID_Continue # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0374          ; ID_Continue # Lm       GREEK NUMERAL SIGN
+0376..0377    ; ID_Continue # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037A          ; ID_Continue # Lm       GREEK YPOGEGRAMMENI
+037B..037D    ; ID_Continue # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; ID_Continue # L&       GREEK CAPITAL LETTER YOT
+0386          ; ID_Continue # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0387          ; ID_Continue # Po       GREEK ANO TELEIA
+0388..038A    ; ID_Continue # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; ID_Continue # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; ID_Continue # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; ID_Continue # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F7..0481    ; ID_Continue # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+0483..0487    ; ID_Continue # Mn   [5] COMBINING CYRILLIC TITLO..COMBINING CYRILLIC POKRYTIE
+048A..052F    ; ID_Continue # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; ID_Continue # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0559          ; ID_Continue # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+0560..0588    ; ID_Continue # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+0591..05BD    ; ID_Continue # Mn  [45] HEBREW ACCENT ETNAHTA..HEBREW POINT METEG
+05BF          ; ID_Continue # Mn       HEBREW POINT RAFE
+05C1..05C2    ; ID_Continue # Mn   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; ID_Continue # Mn   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; ID_Continue # Mn       HEBREW POINT QAMATS QATAN
+05D0..05EA    ; ID_Continue # Lo  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; ID_Continue # Lo   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+0610..061A    ; ID_Continue # Mn  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+0620..063F    ; ID_Continue # Lo  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0640          ; ID_Continue # Lm       ARABIC TATWEEL
+0641..064A    ; ID_Continue # Lo  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+064B..065F    ; ID_Continue # Mn  [21] ARABIC FATHATAN..ARABIC WAVY HAMZA BELOW
+0660..0669    ; ID_Continue # Nd  [10] ARABIC-INDIC DIGIT ZERO..ARABIC-INDIC DIGIT NINE
+066E..066F    ; ID_Continue # Lo   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0670          ; ID_Continue # Mn       ARABIC LETTER SUPERSCRIPT ALEF
+0671..06D3    ; ID_Continue # Lo  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D5          ; ID_Continue # Lo       ARABIC LETTER AE
+06D6..06DC    ; ID_Continue # Mn   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06DF..06E4    ; ID_Continue # Mn   [6] ARABIC SMALL HIGH ROUNDED ZERO..ARABIC SMALL HIGH MADDA
+06E5..06E6    ; ID_Continue # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06E7..06E8    ; ID_Continue # Mn   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06EA..06ED    ; ID_Continue # Mn   [4] ARABIC EMPTY CENTRE LOW STOP..ARABIC SMALL LOW MEEM
+06EE..06EF    ; ID_Continue # Lo   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06F0..06F9    ; ID_Continue # Nd  [10] EXTENDED ARABIC-INDIC DIGIT ZERO..EXTENDED ARABIC-INDIC DIGIT NINE
+06FA..06FC    ; ID_Continue # Lo   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FF          ; ID_Continue # Lo       ARABIC LETTER HEH WITH INVERTED V
+0710          ; ID_Continue # Lo       SYRIAC LETTER ALAPH
+0711          ; ID_Continue # Mn       SYRIAC LETTER SUPERSCRIPT ALAPH
+0712..072F    ; ID_Continue # Lo  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+0730..074A    ; ID_Continue # Mn  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
+074D..07A5    ; ID_Continue # Lo  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07A6..07B0    ; ID_Continue # Mn  [11] THAANA ABAFILI..THAANA SUKUN
+07B1          ; ID_Continue # Lo       THAANA LETTER NAA
+07C0..07C9    ; ID_Continue # Nd  [10] NKO DIGIT ZERO..NKO DIGIT NINE
+07CA..07EA    ; ID_Continue # Lo  [33] NKO LETTER A..NKO LETTER JONA RA
+07EB..07F3    ; ID_Continue # Mn   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07F4..07F5    ; ID_Continue # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; ID_Continue # Lm       NKO LAJANYALAN
+07FD          ; ID_Continue # Mn       NKO DANTAYALAN
+0800..0815    ; ID_Continue # Lo  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+0816..0819    ; ID_Continue # Mn   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
+081A          ; ID_Continue # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+081B..0823    ; ID_Continue # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0824          ; ID_Continue # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0825..0827    ; ID_Continue # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0828          ; ID_Continue # Lm       SAMARITAN MODIFIER LETTER I
+0829..082D    ; ID_Continue # Mn   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
+0840..0858    ; ID_Continue # Lo  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+0859..085B    ; ID_Continue # Mn   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
+0860..086A    ; ID_Continue # Lo  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; ID_Continue # Lo  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0889..088E    ; ID_Continue # Lo   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+0898..089F    ; ID_Continue # Mn   [8] ARABIC SMALL HIGH WORD AL-JUZ..ARABIC HALF MADDA OVER MADDA
+08A0..08C8    ; ID_Continue # Lo  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+08C9          ; ID_Continue # Lm       ARABIC SMALL FARSI YEH
+08CA..08E1    ; ID_Continue # Mn  [24] ARABIC SMALL HIGH FARSI YEH..ARABIC SMALL HIGH SIGN SAFHA
+08E3..0902    ; ID_Continue # Mn  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
+0903          ; ID_Continue # Mc       DEVANAGARI SIGN VISARGA
+0904..0939    ; ID_Continue # Lo  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093A          ; ID_Continue # Mn       DEVANAGARI VOWEL SIGN OE
+093B          ; ID_Continue # Mc       DEVANAGARI VOWEL SIGN OOE
+093C          ; ID_Continue # Mn       DEVANAGARI SIGN NUKTA
+093D          ; ID_Continue # Lo       DEVANAGARI SIGN AVAGRAHA
+093E..0940    ; ID_Continue # Mc   [3] DEVANAGARI VOWEL SIGN AA..DEVANAGARI VOWEL SIGN II
+0941..0948    ; ID_Continue # Mn   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+0949..094C    ; ID_Continue # Mc   [4] DEVANAGARI VOWEL SIGN CANDRA O..DEVANAGARI VOWEL SIGN AU
+094D          ; ID_Continue # Mn       DEVANAGARI SIGN VIRAMA
+094E..094F    ; ID_Continue # Mc   [2] DEVANAGARI VOWEL SIGN PRISHTHAMATRA E..DEVANAGARI VOWEL SIGN AW
+0950          ; ID_Continue # Lo       DEVANAGARI OM
+0951..0957    ; ID_Continue # Mn   [7] DEVANAGARI STRESS SIGN UDATTA..DEVANAGARI VOWEL SIGN UUE
+0958..0961    ; ID_Continue # Lo  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0962..0963    ; ID_Continue # Mn   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0966..096F    ; ID_Continue # Nd  [10] DEVANAGARI DIGIT ZERO..DEVANAGARI DIGIT NINE
+0971          ; ID_Continue # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0972..0980    ; ID_Continue # Lo  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0981          ; ID_Continue # Mn       BENGALI SIGN CANDRABINDU
+0982..0983    ; ID_Continue # Mc   [2] BENGALI SIGN ANUSVARA..BENGALI SIGN VISARGA
+0985..098C    ; ID_Continue # Lo   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; ID_Continue # Lo   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; ID_Continue # Lo  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; ID_Continue # Lo   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; ID_Continue # Lo       BENGALI LETTER LA
+09B6..09B9    ; ID_Continue # Lo   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BC          ; ID_Continue # Mn       BENGALI SIGN NUKTA
+09BD          ; ID_Continue # Lo       BENGALI SIGN AVAGRAHA
+09BE..09C0    ; ID_Continue # Mc   [3] BENGALI VOWEL SIGN AA..BENGALI VOWEL SIGN II
+09C1..09C4    ; ID_Continue # Mn   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09C7..09C8    ; ID_Continue # Mc   [2] BENGALI VOWEL SIGN E..BENGALI VOWEL SIGN AI
+09CB..09CC    ; ID_Continue # Mc   [2] BENGALI VOWEL SIGN O..BENGALI VOWEL SIGN AU
+09CD          ; ID_Continue # Mn       BENGALI SIGN VIRAMA
+09CE          ; ID_Continue # Lo       BENGALI LETTER KHANDA TA
+09D7          ; ID_Continue # Mc       BENGALI AU LENGTH MARK
+09DC..09DD    ; ID_Continue # Lo   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; ID_Continue # Lo   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09E2..09E3    ; ID_Continue # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09E6..09EF    ; ID_Continue # Nd  [10] BENGALI DIGIT ZERO..BENGALI DIGIT NINE
+09F0..09F1    ; ID_Continue # Lo   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09FC          ; ID_Continue # Lo       BENGALI LETTER VEDIC ANUSVARA
+09FE          ; ID_Continue # Mn       BENGALI SANDHI MARK
+0A01..0A02    ; ID_Continue # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A03          ; ID_Continue # Mc       GURMUKHI SIGN VISARGA
+0A05..0A0A    ; ID_Continue # Lo   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; ID_Continue # Lo   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; ID_Continue # Lo  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; ID_Continue # Lo   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; ID_Continue # Lo   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; ID_Continue # Lo   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; ID_Continue # Lo   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A3C          ; ID_Continue # Mn       GURMUKHI SIGN NUKTA
+0A3E..0A40    ; ID_Continue # Mc   [3] GURMUKHI VOWEL SIGN AA..GURMUKHI VOWEL SIGN II
+0A41..0A42    ; ID_Continue # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; ID_Continue # Mn   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4D    ; ID_Continue # Mn   [3] GURMUKHI VOWEL SIGN OO..GURMUKHI SIGN VIRAMA
+0A51          ; ID_Continue # Mn       GURMUKHI SIGN UDAAT
+0A59..0A5C    ; ID_Continue # Lo   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; ID_Continue # Lo       GURMUKHI LETTER FA
+0A66..0A6F    ; ID_Continue # Nd  [10] GURMUKHI DIGIT ZERO..GURMUKHI DIGIT NINE
+0A70..0A71    ; ID_Continue # Mn   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A72..0A74    ; ID_Continue # Lo   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A75          ; ID_Continue # Mn       GURMUKHI SIGN YAKASH
+0A81..0A82    ; ID_Continue # Mn   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0A83          ; ID_Continue # Mc       GUJARATI SIGN VISARGA
+0A85..0A8D    ; ID_Continue # Lo   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; ID_Continue # Lo   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; ID_Continue # Lo  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; ID_Continue # Lo   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; ID_Continue # Lo   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; ID_Continue # Lo   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABC          ; ID_Continue # Mn       GUJARATI SIGN NUKTA
+0ABD          ; ID_Continue # Lo       GUJARATI SIGN AVAGRAHA
+0ABE..0AC0    ; ID_Continue # Mc   [3] GUJARATI VOWEL SIGN AA..GUJARATI VOWEL SIGN II
+0AC1..0AC5    ; ID_Continue # Mn   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; ID_Continue # Mn   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0AC9          ; ID_Continue # Mc       GUJARATI VOWEL SIGN CANDRA O
+0ACB..0ACC    ; ID_Continue # Mc   [2] GUJARATI VOWEL SIGN O..GUJARATI VOWEL SIGN AU
+0ACD          ; ID_Continue # Mn       GUJARATI SIGN VIRAMA
+0AD0          ; ID_Continue # Lo       GUJARATI OM
+0AE0..0AE1    ; ID_Continue # Lo   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AE2..0AE3    ; ID_Continue # Mn   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AE6..0AEF    ; ID_Continue # Nd  [10] GUJARATI DIGIT ZERO..GUJARATI DIGIT NINE
+0AF9          ; ID_Continue # Lo       GUJARATI LETTER ZHA
+0AFA..0AFF    ; ID_Continue # Mn   [6] GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE NUKTA ABOVE
+0B01          ; ID_Continue # Mn       ORIYA SIGN CANDRABINDU
+0B02..0B03    ; ID_Continue # Mc   [2] ORIYA SIGN ANUSVARA..ORIYA SIGN VISARGA
+0B05..0B0C    ; ID_Continue # Lo   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; ID_Continue # Lo   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; ID_Continue # Lo  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; ID_Continue # Lo   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; ID_Continue # Lo   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; ID_Continue # Lo   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3C          ; ID_Continue # Mn       ORIYA SIGN NUKTA
+0B3D          ; ID_Continue # Lo       ORIYA SIGN AVAGRAHA
+0B3E          ; ID_Continue # Mc       ORIYA VOWEL SIGN AA
+0B3F          ; ID_Continue # Mn       ORIYA VOWEL SIGN I
+0B40          ; ID_Continue # Mc       ORIYA VOWEL SIGN II
+0B41..0B44    ; ID_Continue # Mn   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B47..0B48    ; ID_Continue # Mc   [2] ORIYA VOWEL SIGN E..ORIYA VOWEL SIGN AI
+0B4B..0B4C    ; ID_Continue # Mc   [2] ORIYA VOWEL SIGN O..ORIYA VOWEL SIGN AU
+0B4D          ; ID_Continue # Mn       ORIYA SIGN VIRAMA
+0B55..0B56    ; ID_Continue # Mn   [2] ORIYA SIGN OVERLINE..ORIYA AI LENGTH MARK
+0B57          ; ID_Continue # Mc       ORIYA AU LENGTH MARK
+0B5C..0B5D    ; ID_Continue # Lo   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; ID_Continue # Lo   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B62..0B63    ; ID_Continue # Mn   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B66..0B6F    ; ID_Continue # Nd  [10] ORIYA DIGIT ZERO..ORIYA DIGIT NINE
+0B71          ; ID_Continue # Lo       ORIYA LETTER WA
+0B82          ; ID_Continue # Mn       TAMIL SIGN ANUSVARA
+0B83          ; ID_Continue # Lo       TAMIL SIGN VISARGA
+0B85..0B8A    ; ID_Continue # Lo   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; ID_Continue # Lo   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; ID_Continue # Lo   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; ID_Continue # Lo   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; ID_Continue # Lo       TAMIL LETTER JA
+0B9E..0B9F    ; ID_Continue # Lo   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; ID_Continue # Lo   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; ID_Continue # Lo   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; ID_Continue # Lo  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BBE..0BBF    ; ID_Continue # Mc   [2] TAMIL VOWEL SIGN AA..TAMIL VOWEL SIGN I
+0BC0          ; ID_Continue # Mn       TAMIL VOWEL SIGN II
+0BC1..0BC2    ; ID_Continue # Mc   [2] TAMIL VOWEL SIGN U..TAMIL VOWEL SIGN UU
+0BC6..0BC8    ; ID_Continue # Mc   [3] TAMIL VOWEL SIGN E..TAMIL VOWEL SIGN AI
+0BCA..0BCC    ; ID_Continue # Mc   [3] TAMIL VOWEL SIGN O..TAMIL VOWEL SIGN AU
+0BCD          ; ID_Continue # Mn       TAMIL SIGN VIRAMA
+0BD0          ; ID_Continue # Lo       TAMIL OM
+0BD7          ; ID_Continue # Mc       TAMIL AU LENGTH MARK
+0BE6..0BEF    ; ID_Continue # Nd  [10] TAMIL DIGIT ZERO..TAMIL DIGIT NINE
+0C00          ; ID_Continue # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C01..0C03    ; ID_Continue # Mc   [3] TELUGU SIGN CANDRABINDU..TELUGU SIGN VISARGA
+0C04          ; ID_Continue # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C05..0C0C    ; ID_Continue # Lo   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; ID_Continue # Lo   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; ID_Continue # Lo  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; ID_Continue # Lo  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3C          ; ID_Continue # Mn       TELUGU SIGN NUKTA
+0C3D          ; ID_Continue # Lo       TELUGU SIGN AVAGRAHA
+0C3E..0C40    ; ID_Continue # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C41..0C44    ; ID_Continue # Mc   [4] TELUGU VOWEL SIGN U..TELUGU VOWEL SIGN VOCALIC RR
+0C46..0C48    ; ID_Continue # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4D    ; ID_Continue # Mn   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
+0C55..0C56    ; ID_Continue # Mn   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C58..0C5A    ; ID_Continue # Lo   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; ID_Continue # Lo       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; ID_Continue # Lo   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C62..0C63    ; ID_Continue # Mn   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C66..0C6F    ; ID_Continue # Nd  [10] TELUGU DIGIT ZERO..TELUGU DIGIT NINE
+0C80          ; ID_Continue # Lo       KANNADA SIGN SPACING CANDRABINDU
+0C81          ; ID_Continue # Mn       KANNADA SIGN CANDRABINDU
+0C82..0C83    ; ID_Continue # Mc   [2] KANNADA SIGN ANUSVARA..KANNADA SIGN VISARGA
+0C85..0C8C    ; ID_Continue # Lo   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; ID_Continue # Lo   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; ID_Continue # Lo  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; ID_Continue # Lo  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; ID_Continue # Lo   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBC          ; ID_Continue # Mn       KANNADA SIGN NUKTA
+0CBD          ; ID_Continue # Lo       KANNADA SIGN AVAGRAHA
+0CBE          ; ID_Continue # Mc       KANNADA VOWEL SIGN AA
+0CBF          ; ID_Continue # Mn       KANNADA VOWEL SIGN I
+0CC0..0CC4    ; ID_Continue # Mc   [5] KANNADA VOWEL SIGN II..KANNADA VOWEL SIGN VOCALIC RR
+0CC6          ; ID_Continue # Mn       KANNADA VOWEL SIGN E
+0CC7..0CC8    ; ID_Continue # Mc   [2] KANNADA VOWEL SIGN EE..KANNADA VOWEL SIGN AI
+0CCA..0CCB    ; ID_Continue # Mc   [2] KANNADA VOWEL SIGN O..KANNADA VOWEL SIGN OO
+0CCC..0CCD    ; ID_Continue # Mn   [2] KANNADA VOWEL SIGN AU..KANNADA SIGN VIRAMA
+0CD5..0CD6    ; ID_Continue # Mc   [2] KANNADA LENGTH MARK..KANNADA AI LENGTH MARK
+0CDD..0CDE    ; ID_Continue # Lo   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; ID_Continue # Lo   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CE2..0CE3    ; ID_Continue # Mn   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0CE6..0CEF    ; ID_Continue # Nd  [10] KANNADA DIGIT ZERO..KANNADA DIGIT NINE
+0CF1..0CF2    ; ID_Continue # Lo   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0CF3          ; ID_Continue # Mc       KANNADA SIGN COMBINING ANUSVARA ABOVE RIGHT
+0D00..0D01    ; ID_Continue # Mn   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D02..0D03    ; ID_Continue # Mc   [2] MALAYALAM SIGN ANUSVARA..MALAYALAM SIGN VISARGA
+0D04..0D0C    ; ID_Continue # Lo   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; ID_Continue # Lo   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; ID_Continue # Lo  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3B..0D3C    ; ID_Continue # Mn   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D3D          ; ID_Continue # Lo       MALAYALAM SIGN AVAGRAHA
+0D3E..0D40    ; ID_Continue # Mc   [3] MALAYALAM VOWEL SIGN AA..MALAYALAM VOWEL SIGN II
+0D41..0D44    ; ID_Continue # Mn   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D46..0D48    ; ID_Continue # Mc   [3] MALAYALAM VOWEL SIGN E..MALAYALAM VOWEL SIGN AI
+0D4A..0D4C    ; ID_Continue # Mc   [3] MALAYALAM VOWEL SIGN O..MALAYALAM VOWEL SIGN AU
+0D4D          ; ID_Continue # Mn       MALAYALAM SIGN VIRAMA
+0D4E          ; ID_Continue # Lo       MALAYALAM LETTER DOT REPH
+0D54..0D56    ; ID_Continue # Lo   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D57          ; ID_Continue # Mc       MALAYALAM AU LENGTH MARK
+0D5F..0D61    ; ID_Continue # Lo   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D62..0D63    ; ID_Continue # Mn   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D66..0D6F    ; ID_Continue # Nd  [10] MALAYALAM DIGIT ZERO..MALAYALAM DIGIT NINE
+0D7A..0D7F    ; ID_Continue # Lo   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D81          ; ID_Continue # Mn       SINHALA SIGN CANDRABINDU
+0D82..0D83    ; ID_Continue # Mc   [2] SINHALA SIGN ANUSVARAYA..SINHALA SIGN VISARGAYA
+0D85..0D96    ; ID_Continue # Lo  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; ID_Continue # Lo  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; ID_Continue # Lo   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; ID_Continue # Lo       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; ID_Continue # Lo   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0DCA          ; ID_Continue # Mn       SINHALA SIGN AL-LAKUNA
+0DCF..0DD1    ; ID_Continue # Mc   [3] SINHALA VOWEL SIGN AELA-PILLA..SINHALA VOWEL SIGN DIGA AEDA-PILLA
+0DD2..0DD4    ; ID_Continue # Mn   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; ID_Continue # Mn       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0DD8..0DDF    ; ID_Continue # Mc   [8] SINHALA VOWEL SIGN GAETTA-PILLA..SINHALA VOWEL SIGN GAYANUKITTA
+0DE6..0DEF    ; ID_Continue # Nd  [10] SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT NINE
+0DF2..0DF3    ; ID_Continue # Mc   [2] SINHALA VOWEL SIGN DIGA GAETTA-PILLA..SINHALA VOWEL SIGN DIGA GAYANUKITTA
+0E01..0E30    ; ID_Continue # Lo  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E31          ; ID_Continue # Mn       THAI CHARACTER MAI HAN-AKAT
+0E32..0E33    ; ID_Continue # Lo   [2] THAI CHARACTER SARA AA..THAI CHARACTER SARA AM
+0E34..0E3A    ; ID_Continue # Mn   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E40..0E45    ; ID_Continue # Lo   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E46          ; ID_Continue # Lm       THAI CHARACTER MAIYAMOK
+0E47..0E4E    ; ID_Continue # Mn   [8] THAI CHARACTER MAITAIKHU..THAI CHARACTER YAMAKKAN
+0E50..0E59    ; ID_Continue # Nd  [10] THAI DIGIT ZERO..THAI DIGIT NINE
+0E81..0E82    ; ID_Continue # Lo   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; ID_Continue # Lo       LAO LETTER KHO TAM
+0E86..0E8A    ; ID_Continue # Lo   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; ID_Continue # Lo  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; ID_Continue # Lo       LAO LETTER LO LOOT
+0EA7..0EB0    ; ID_Continue # Lo  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB1          ; ID_Continue # Mn       LAO VOWEL SIGN MAI KAN
+0EB2..0EB3    ; ID_Continue # Lo   [2] LAO VOWEL SIGN AA..LAO VOWEL SIGN AM
+0EB4..0EBC    ; ID_Continue # Mn   [9] LAO VOWEL SIGN I..LAO SEMIVOWEL SIGN LO
+0EBD          ; ID_Continue # Lo       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; ID_Continue # Lo   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EC6          ; ID_Continue # Lm       LAO KO LA
+0EC8..0ECE    ; ID_Continue # Mn   [7] LAO TONE MAI EK..LAO YAMAKKAN
+0ED0..0ED9    ; ID_Continue # Nd  [10] LAO DIGIT ZERO..LAO DIGIT NINE
+0EDC..0EDF    ; ID_Continue # Lo   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; ID_Continue # Lo       TIBETAN SYLLABLE OM
+0F18..0F19    ; ID_Continue # Mn   [2] TIBETAN ASTROLOGICAL SIGN -KHYUD PA..TIBETAN ASTROLOGICAL SIGN SDONG TSHUGS
+0F20..0F29    ; ID_Continue # Nd  [10] TIBETAN DIGIT ZERO..TIBETAN DIGIT NINE
+0F35          ; ID_Continue # Mn       TIBETAN MARK NGAS BZUNG NYI ZLA
+0F37          ; ID_Continue # Mn       TIBETAN MARK NGAS BZUNG SGOR RTAGS
+0F39          ; ID_Continue # Mn       TIBETAN MARK TSA -PHRU
+0F3E..0F3F    ; ID_Continue # Mc   [2] TIBETAN SIGN YAR TSHES..TIBETAN SIGN MAR TSHES
+0F40..0F47    ; ID_Continue # Lo   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; ID_Continue # Lo  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F71..0F7E    ; ID_Continue # Mn  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F7F          ; ID_Continue # Mc       TIBETAN SIGN RNAM BCAD
+0F80..0F84    ; ID_Continue # Mn   [5] TIBETAN VOWEL SIGN REVERSED I..TIBETAN MARK HALANTA
+0F86..0F87    ; ID_Continue # Mn   [2] TIBETAN SIGN LCI RTAGS..TIBETAN SIGN YANG RTAGS
+0F88..0F8C    ; ID_Continue # Lo   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+0F8D..0F97    ; ID_Continue # Mn  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; ID_Continue # Mn  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+0FC6          ; ID_Continue # Mn       TIBETAN SYMBOL PADMA GDAN
+1000..102A    ; ID_Continue # Lo  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+102B..102C    ; ID_Continue # Mc   [2] MYANMAR VOWEL SIGN TALL AA..MYANMAR VOWEL SIGN AA
+102D..1030    ; ID_Continue # Mn   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1031          ; ID_Continue # Mc       MYANMAR VOWEL SIGN E
+1032..1037    ; ID_Continue # Mn   [6] MYANMAR VOWEL SIGN AI..MYANMAR SIGN DOT BELOW
+1038          ; ID_Continue # Mc       MYANMAR SIGN VISARGA
+1039..103A    ; ID_Continue # Mn   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+103B..103C    ; ID_Continue # Mc   [2] MYANMAR CONSONANT SIGN MEDIAL YA..MYANMAR CONSONANT SIGN MEDIAL RA
+103D..103E    ; ID_Continue # Mn   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+103F          ; ID_Continue # Lo       MYANMAR LETTER GREAT SA
+1040..1049    ; ID_Continue # Nd  [10] MYANMAR DIGIT ZERO..MYANMAR DIGIT NINE
+1050..1055    ; ID_Continue # Lo   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+1056..1057    ; ID_Continue # Mc   [2] MYANMAR VOWEL SIGN VOCALIC R..MYANMAR VOWEL SIGN VOCALIC RR
+1058..1059    ; ID_Continue # Mn   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105A..105D    ; ID_Continue # Lo   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+105E..1060    ; ID_Continue # Mn   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1061          ; ID_Continue # Lo       MYANMAR LETTER SGAW KAREN SHA
+1062..1064    ; ID_Continue # Mc   [3] MYANMAR VOWEL SIGN SGAW KAREN EU..MYANMAR TONE MARK SGAW KAREN KE PHO
+1065..1066    ; ID_Continue # Lo   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+1067..106D    ; ID_Continue # Mc   [7] MYANMAR VOWEL SIGN WESTERN PWO KAREN EU..MYANMAR SIGN WESTERN PWO KAREN TONE-5
+106E..1070    ; ID_Continue # Lo   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1071..1074    ; ID_Continue # Mn   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1075..1081    ; ID_Continue # Lo  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+1082          ; ID_Continue # Mn       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1083..1084    ; ID_Continue # Mc   [2] MYANMAR VOWEL SIGN SHAN AA..MYANMAR VOWEL SIGN SHAN E
+1085..1086    ; ID_Continue # Mn   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+1087..108C    ; ID_Continue # Mc   [6] MYANMAR SIGN SHAN TONE-2..MYANMAR SIGN SHAN COUNCIL TONE-3
+108D          ; ID_Continue # Mn       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+108E          ; ID_Continue # Lo       MYANMAR LETTER RUMAI PALAUNG FA
+108F          ; ID_Continue # Mc       MYANMAR SIGN RUMAI PALAUNG TONE-5
+1090..1099    ; ID_Continue # Nd  [10] MYANMAR SHAN DIGIT ZERO..MYANMAR SHAN DIGIT NINE
+109A..109C    ; ID_Continue # Mc   [3] MYANMAR SIGN KHAMTI TONE-1..MYANMAR VOWEL SIGN AITON A
+109D          ; ID_Continue # Mn       MYANMAR VOWEL SIGN AITON AI
+10A0..10C5    ; ID_Continue # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; ID_Continue # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; ID_Continue # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; ID_Continue # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; ID_Continue # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; ID_Continue # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+1100..1248    ; ID_Continue # Lo [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; ID_Continue # Lo       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; ID_Continue # Lo  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; ID_Continue # Lo  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; ID_Continue # Lo       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; ID_Continue # Lo  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; ID_Continue # Lo  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; ID_Continue # Lo  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+135D..135F    ; ID_Continue # Mn   [3] ETHIOPIC COMBINING GEMINATION AND VOWEL LENGTH MARK..ETHIOPIC COMBINING GEMINATION MARK
+1369..1371    ; ID_Continue # No   [9] ETHIOPIC DIGIT ONE..ETHIOPIC DIGIT NINE
+1380..138F    ; ID_Continue # Lo  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+13A0..13F5    ; ID_Continue # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; ID_Continue # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1401..166C    ; ID_Continue # Lo [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166F..167F    ; ID_Continue # Lo  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1681..169A    ; ID_Continue # Lo  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+16A0..16EA    ; ID_Continue # Lo  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16EE..16F0    ; ID_Continue # Nl   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+16F1..16F8    ; ID_Continue # Lo   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; ID_Continue # Lo  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+1712..1714    ; ID_Continue # Mn   [3] TAGALOG VOWEL SIGN I..TAGALOG SIGN VIRAMA
+1715          ; ID_Continue # Mc       TAGALOG SIGN PAMUDPOD
+171F..1731    ; ID_Continue # Lo  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1732..1733    ; ID_Continue # Mn   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1734          ; ID_Continue # Mc       HANUNOO SIGN PAMUDPOD
+1740..1751    ; ID_Continue # Lo  [18] BUHID LETTER A..BUHID LETTER HA
+1752..1753    ; ID_Continue # Mn   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1760..176C    ; ID_Continue # Lo  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; ID_Continue # Lo   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1772..1773    ; ID_Continue # Mn   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+1780..17B3    ; ID_Continue # Lo  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17B4..17B5    ; ID_Continue # Mn   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+17B6          ; ID_Continue # Mc       KHMER VOWEL SIGN AA
+17B7..17BD    ; ID_Continue # Mn   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17BE..17C5    ; ID_Continue # Mc   [8] KHMER VOWEL SIGN OE..KHMER VOWEL SIGN AU
+17C6          ; ID_Continue # Mn       KHMER SIGN NIKAHIT
+17C7..17C8    ; ID_Continue # Mc   [2] KHMER SIGN REAHMUK..KHMER SIGN YUUKALEAPINTU
+17C9..17D3    ; ID_Continue # Mn  [11] KHMER SIGN MUUSIKATOAN..KHMER SIGN BATHAMASAT
+17D7          ; ID_Continue # Lm       KHMER SIGN LEK TOO
+17DC          ; ID_Continue # Lo       KHMER SIGN AVAKRAHASANYA
+17DD          ; ID_Continue # Mn       KHMER SIGN ATTHACAN
+17E0..17E9    ; ID_Continue # Nd  [10] KHMER DIGIT ZERO..KHMER DIGIT NINE
+180B..180D    ; ID_Continue # Mn   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180F          ; ID_Continue # Mn       MONGOLIAN FREE VARIATION SELECTOR FOUR
+1810..1819    ; ID_Continue # Nd  [10] MONGOLIAN DIGIT ZERO..MONGOLIAN DIGIT NINE
+1820..1842    ; ID_Continue # Lo  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1843          ; ID_Continue # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1844..1878    ; ID_Continue # Lo  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; ID_Continue # Lo   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1885..1886    ; ID_Continue # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+1887..18A8    ; ID_Continue # Lo  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18A9          ; ID_Continue # Mn       MONGOLIAN LETTER ALI GALI DAGALGA
+18AA          ; ID_Continue # Lo       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; ID_Continue # Lo  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; ID_Continue # Lo  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1920..1922    ; ID_Continue # Mn   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1923..1926    ; ID_Continue # Mc   [4] LIMBU VOWEL SIGN EE..LIMBU VOWEL SIGN AU
+1927..1928    ; ID_Continue # Mn   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1929..192B    ; ID_Continue # Mc   [3] LIMBU SUBJOINED LETTER YA..LIMBU SUBJOINED LETTER WA
+1930..1931    ; ID_Continue # Mc   [2] LIMBU SMALL LETTER KA..LIMBU SMALL LETTER NGA
+1932          ; ID_Continue # Mn       LIMBU SMALL LETTER ANUSVARA
+1933..1938    ; ID_Continue # Mc   [6] LIMBU SMALL LETTER TA..LIMBU SMALL LETTER LA
+1939..193B    ; ID_Continue # Mn   [3] LIMBU SIGN MUKPHRENG..LIMBU SIGN SA-I
+1946..194F    ; ID_Continue # Nd  [10] LIMBU DIGIT ZERO..LIMBU DIGIT NINE
+1950..196D    ; ID_Continue # Lo  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; ID_Continue # Lo   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; ID_Continue # Lo  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; ID_Continue # Lo  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+19D0..19D9    ; ID_Continue # Nd  [10] NEW TAI LUE DIGIT ZERO..NEW TAI LUE DIGIT NINE
+19DA          ; ID_Continue # No       NEW TAI LUE THAM DIGIT ONE
+1A00..1A16    ; ID_Continue # Lo  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A17..1A18    ; ID_Continue # Mn   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A19..1A1A    ; ID_Continue # Mc   [2] BUGINESE VOWEL SIGN E..BUGINESE VOWEL SIGN O
+1A1B          ; ID_Continue # Mn       BUGINESE VOWEL SIGN AE
+1A20..1A54    ; ID_Continue # Lo  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1A55          ; ID_Continue # Mc       TAI THAM CONSONANT SIGN MEDIAL RA
+1A56          ; ID_Continue # Mn       TAI THAM CONSONANT SIGN MEDIAL LA
+1A57          ; ID_Continue # Mc       TAI THAM CONSONANT SIGN LA TANG LAI
+1A58..1A5E    ; ID_Continue # Mn   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A60          ; ID_Continue # Mn       TAI THAM SIGN SAKOT
+1A61          ; ID_Continue # Mc       TAI THAM VOWEL SIGN A
+1A62          ; ID_Continue # Mn       TAI THAM VOWEL SIGN MAI SAT
+1A63..1A64    ; ID_Continue # Mc   [2] TAI THAM VOWEL SIGN AA..TAI THAM VOWEL SIGN TALL AA
+1A65..1A6C    ; ID_Continue # Mn   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A6D..1A72    ; ID_Continue # Mc   [6] TAI THAM VOWEL SIGN OY..TAI THAM VOWEL SIGN THAM AI
+1A73..1A7C    ; ID_Continue # Mn  [10] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN KHUEN-LUE KARAN
+1A7F          ; ID_Continue # Mn       TAI THAM COMBINING CRYPTOGRAMMIC DOT
+1A80..1A89    ; ID_Continue # Nd  [10] TAI THAM HORA DIGIT ZERO..TAI THAM HORA DIGIT NINE
+1A90..1A99    ; ID_Continue # Nd  [10] TAI THAM THAM DIGIT ZERO..TAI THAM THAM DIGIT NINE
+1AA7          ; ID_Continue # Lm       TAI THAM SIGN MAI YAMOK
+1AB0..1ABD    ; ID_Continue # Mn  [14] COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBINING PARENTHESES BELOW
+1ABF..1ACE    ; ID_Continue # Mn  [16] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; ID_Continue # Mn   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B04          ; ID_Continue # Mc       BALINESE SIGN BISAH
+1B05..1B33    ; ID_Continue # Lo  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B34          ; ID_Continue # Mn       BALINESE SIGN REREKAN
+1B35          ; ID_Continue # Mc       BALINESE VOWEL SIGN TEDUNG
+1B36..1B3A    ; ID_Continue # Mn   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3B          ; ID_Continue # Mc       BALINESE VOWEL SIGN RA REPA TEDUNG
+1B3C          ; ID_Continue # Mn       BALINESE VOWEL SIGN LA LENGA
+1B3D..1B41    ; ID_Continue # Mc   [5] BALINESE VOWEL SIGN LA LENGA TEDUNG..BALINESE VOWEL SIGN TALING REPA TEDUNG
+1B42          ; ID_Continue # Mn       BALINESE VOWEL SIGN PEPET
+1B43..1B44    ; ID_Continue # Mc   [2] BALINESE VOWEL SIGN PEPET TEDUNG..BALINESE ADEG ADEG
+1B45..1B4C    ; ID_Continue # Lo   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B50..1B59    ; ID_Continue # Nd  [10] BALINESE DIGIT ZERO..BALINESE DIGIT NINE
+1B6B..1B73    ; ID_Continue # Mn   [9] BALINESE MUSICAL SYMBOL COMBINING TEGEH..BALINESE MUSICAL SYMBOL COMBINING GONG
+1B80..1B81    ; ID_Continue # Mn   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1B82          ; ID_Continue # Mc       SUNDANESE SIGN PANGWISAD
+1B83..1BA0    ; ID_Continue # Lo  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BA1          ; ID_Continue # Mc       SUNDANESE CONSONANT SIGN PAMINGKAL
+1BA2..1BA5    ; ID_Continue # Mn   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA6..1BA7    ; ID_Continue # Mc   [2] SUNDANESE VOWEL SIGN PANAELAENG..SUNDANESE VOWEL SIGN PANOLONG
+1BA8..1BA9    ; ID_Continue # Mn   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAA          ; ID_Continue # Mc       SUNDANESE SIGN PAMAAEH
+1BAB..1BAD    ; ID_Continue # Mn   [3] SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BAE..1BAF    ; ID_Continue # Lo   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BB0..1BB9    ; ID_Continue # Nd  [10] SUNDANESE DIGIT ZERO..SUNDANESE DIGIT NINE
+1BBA..1BE5    ; ID_Continue # Lo  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1BE6          ; ID_Continue # Mn       BATAK SIGN TOMPI
+1BE7          ; ID_Continue # Mc       BATAK VOWEL SIGN E
+1BE8..1BE9    ; ID_Continue # Mn   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BEA..1BEC    ; ID_Continue # Mc   [3] BATAK VOWEL SIGN I..BATAK VOWEL SIGN O
+1BED          ; ID_Continue # Mn       BATAK VOWEL SIGN KARO O
+1BEE          ; ID_Continue # Mc       BATAK VOWEL SIGN U
+1BEF..1BF1    ; ID_Continue # Mn   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1BF2..1BF3    ; ID_Continue # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
+1C00..1C23    ; ID_Continue # Lo  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C24..1C2B    ; ID_Continue # Mc   [8] LEPCHA SUBJOINED LETTER YA..LEPCHA VOWEL SIGN UU
+1C2C..1C33    ; ID_Continue # Mn   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C34..1C35    ; ID_Continue # Mc   [2] LEPCHA CONSONANT SIGN NYIN-DO..LEPCHA CONSONANT SIGN KANG
+1C36..1C37    ; ID_Continue # Mn   [2] LEPCHA SIGN RAN..LEPCHA SIGN NUKTA
+1C40..1C49    ; ID_Continue # Nd  [10] LEPCHA DIGIT ZERO..LEPCHA DIGIT NINE
+1C4D..1C4F    ; ID_Continue # Lo   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C50..1C59    ; ID_Continue # Nd  [10] OL CHIKI DIGIT ZERO..OL CHIKI DIGIT NINE
+1C5A..1C77    ; ID_Continue # Lo  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1C78..1C7D    ; ID_Continue # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1C80..1C88    ; ID_Continue # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; ID_Continue # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; ID_Continue # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1CD0..1CD2    ; ID_Continue # Mn   [3] VEDIC TONE KARSHANA..VEDIC TONE PRENKHA
+1CD4..1CE0    ; ID_Continue # Mn  [13] VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC TONE RIGVEDIC KASHMIRI INDEPENDENT SVARITA
+1CE1          ; ID_Continue # Mc       VEDIC TONE ATHARVAVEDIC INDEPENDENT SVARITA
+1CE2..1CE8    ; ID_Continue # Mn   [7] VEDIC SIGN VISARGA SVARITA..VEDIC SIGN VISARGA ANUDATTA WITH TAIL
+1CE9..1CEC    ; ID_Continue # Lo   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CED          ; ID_Continue # Mn       VEDIC SIGN TIRYAK
+1CEE..1CF3    ; ID_Continue # Lo   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF4          ; ID_Continue # Mn       VEDIC TONE CANDRA ABOVE
+1CF5..1CF6    ; ID_Continue # Lo   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CF7          ; ID_Continue # Mc       VEDIC SIGN ATIKRAMA
+1CF8..1CF9    ; ID_Continue # Mn   [2] VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING ABOVE
+1CFA          ; ID_Continue # Lo       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+1D00..1D2B    ; ID_Continue # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; ID_Continue # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; ID_Continue # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; ID_Continue # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; ID_Continue # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; ID_Continue # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1DC0..1DFF    ; ID_Continue # Mn  [64] COMBINING DOTTED GRAVE ACCENT..COMBINING RIGHT ARROWHEAD AND DOWN ARROWHEAD BELOW
+1E00..1F15    ; ID_Continue # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; ID_Continue # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; ID_Continue # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; ID_Continue # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; ID_Continue # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; ID_Continue # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; ID_Continue # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; ID_Continue # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; ID_Continue # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; ID_Continue # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; ID_Continue # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; ID_Continue # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; ID_Continue # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; ID_Continue # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; ID_Continue # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; ID_Continue # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; ID_Continue # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; ID_Continue # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; ID_Continue # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+203F..2040    ; ID_Continue # Pc   [2] UNDERTIE..CHARACTER TIE
+2054          ; ID_Continue # Pc       INVERTED UNDERTIE
+2071          ; ID_Continue # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; ID_Continue # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; ID_Continue # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+20D0..20DC    ; ID_Continue # Mn  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20E1          ; ID_Continue # Mn       COMBINING LEFT RIGHT ARROW ABOVE
+20E5..20F0    ; ID_Continue # Mn  [12] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING ASTERISK ABOVE
+2102          ; ID_Continue # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; ID_Continue # L&       EULER CONSTANT
+210A..2113    ; ID_Continue # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; ID_Continue # L&       DOUBLE-STRUCK CAPITAL N
+2118          ; ID_Continue # Sm       SCRIPT CAPITAL P
+2119..211D    ; ID_Continue # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; ID_Continue # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; ID_Continue # L&       OHM SIGN
+2128          ; ID_Continue # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; ID_Continue # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212E          ; ID_Continue # So       ESTIMATED SYMBOL
+212F..2134    ; ID_Continue # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2135..2138    ; ID_Continue # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+2139          ; ID_Continue # L&       INFORMATION SOURCE
+213C..213F    ; ID_Continue # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2145..2149    ; ID_Continue # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; ID_Continue # L&       TURNED SMALL F
+2160..2182    ; ID_Continue # Nl  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2183..2184    ; ID_Continue # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+2185..2188    ; ID_Continue # Nl   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+2C00..2C7B    ; ID_Continue # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; ID_Continue # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; ID_Continue # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CEB..2CEE    ; ID_Continue # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CEF..2CF1    ; ID_Continue # Mn   [3] COPTIC COMBINING NI ABOVE..COPTIC COMBINING SPIRITUS LENIS
+2CF2..2CF3    ; ID_Continue # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; ID_Continue # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; ID_Continue # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; ID_Continue # L&       GEORGIAN SMALL LETTER AEN
+2D30..2D67    ; ID_Continue # Lo  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D6F          ; ID_Continue # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D7F          ; ID_Continue # Mn       TIFINAGH CONSONANT JOINER
+2D80..2D96    ; ID_Continue # Lo  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+2DE0..2DFF    ; ID_Continue # Mn  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+3005          ; ID_Continue # Lm       IDEOGRAPHIC ITERATION MARK
+3006          ; ID_Continue # Lo       IDEOGRAPHIC CLOSING MARK
+3007          ; ID_Continue # Nl       IDEOGRAPHIC NUMBER ZERO
+3021..3029    ; ID_Continue # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+302A..302D    ; ID_Continue # Mn   [4] IDEOGRAPHIC LEVEL TONE MARK..IDEOGRAPHIC ENTERING TONE MARK
+302E..302F    ; ID_Continue # Mc   [2] HANGUL SINGLE DOT TONE MARK..HANGUL DOUBLE DOT TONE MARK
+3031..3035    ; ID_Continue # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+3038..303A    ; ID_Continue # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+303B          ; ID_Continue # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+303C          ; ID_Continue # Lo       MASU MARK
+3041..3096    ; ID_Continue # Lo  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+3099..309A    ; ID_Continue # Mn   [2] COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK..COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309B..309C    ; ID_Continue # Sk   [2] KATAKANA-HIRAGANA VOICED SOUND MARK..KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309D..309E    ; ID_Continue # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+309F          ; ID_Continue # Lo       HIRAGANA DIGRAPH YORI
+30A1..30FA    ; ID_Continue # Lo  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FC..30FE    ; ID_Continue # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+30FF          ; ID_Continue # Lo       KATAKANA DIGRAPH KOTO
+3105..312F    ; ID_Continue # Lo  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; ID_Continue # Lo  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+31A0..31BF    ; ID_Continue # Lo  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31F0..31FF    ; ID_Continue # Lo  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3400..4DBF    ; ID_Continue # Lo [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4E00..A014    ; ID_Continue # Lo [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A015          ; ID_Continue # Lm       YI SYLLABLE WU
+A016..A48C    ; ID_Continue # Lo [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A4D0..A4F7    ; ID_Continue # Lo  [40] LISU LETTER BA..LISU LETTER OE
+A4F8..A4FD    ; ID_Continue # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A500..A60B    ; ID_Continue # Lo [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A60C          ; ID_Continue # Lm       VAI SYLLABLE LENGTHENER
+A610..A61F    ; ID_Continue # Lo  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A620..A629    ; ID_Continue # Nd  [10] VAI DIGIT ZERO..VAI DIGIT NINE
+A62A..A62B    ; ID_Continue # Lo   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A640..A66D    ; ID_Continue # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A66E          ; ID_Continue # Lo       CYRILLIC LETTER MULTIOCULAR O
+A66F          ; ID_Continue # Mn       COMBINING CYRILLIC VZMET
+A674..A67D    ; ID_Continue # Mn  [10] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC PAYEROK
+A67F          ; ID_Continue # Lm       CYRILLIC PAYEROK
+A680..A69B    ; ID_Continue # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; ID_Continue # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A69E..A69F    ; ID_Continue # Mn   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6A0..A6E5    ; ID_Continue # Lo  [70] BAMUM LETTER A..BAMUM LETTER KI
+A6E6..A6EF    ; ID_Continue # Nl  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+A6F0..A6F1    ; ID_Continue # Mn   [2] BAMUM COMBINING MARK KOQNDON..BAMUM COMBINING MARK TUKWENTIS
+A717..A71F    ; ID_Continue # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A722..A76F    ; ID_Continue # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; ID_Continue # Lm       MODIFIER LETTER US
+A771..A787    ; ID_Continue # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A788          ; ID_Continue # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A78B..A78E    ; ID_Continue # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A78F          ; ID_Continue # Lo       LATIN LETTER SINOLOGICAL DOT
+A790..A7CA    ; ID_Continue # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; ID_Continue # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; ID_Continue # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; ID_Continue # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; ID_Continue # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; ID_Continue # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F7          ; ID_Continue # Lo       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7F8..A7F9    ; ID_Continue # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; ID_Continue # L&       LATIN LETTER SMALL CAPITAL TURNED M
+A7FB..A801    ; ID_Continue # Lo   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A802          ; ID_Continue # Mn       SYLOTI NAGRI SIGN DVISVARA
+A803..A805    ; ID_Continue # Lo   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A806          ; ID_Continue # Mn       SYLOTI NAGRI SIGN HASANTA
+A807..A80A    ; ID_Continue # Lo   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80B          ; ID_Continue # Mn       SYLOTI NAGRI SIGN ANUSVARA
+A80C..A822    ; ID_Continue # Lo  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A823..A824    ; ID_Continue # Mc   [2] SYLOTI NAGRI VOWEL SIGN A..SYLOTI NAGRI VOWEL SIGN I
+A825..A826    ; ID_Continue # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A827          ; ID_Continue # Mc       SYLOTI NAGRI VOWEL SIGN OO
+A82C          ; ID_Continue # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A840..A873    ; ID_Continue # Lo  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A880..A881    ; ID_Continue # Mc   [2] SAURASHTRA SIGN ANUSVARA..SAURASHTRA SIGN VISARGA
+A882..A8B3    ; ID_Continue # Lo  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8B4..A8C3    ; ID_Continue # Mc  [16] SAURASHTRA CONSONANT SIGN HAARU..SAURASHTRA VOWEL SIGN AU
+A8C4..A8C5    ; ID_Continue # Mn   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
+A8D0..A8D9    ; ID_Continue # Nd  [10] SAURASHTRA DIGIT ZERO..SAURASHTRA DIGIT NINE
+A8E0..A8F1    ; ID_Continue # Mn  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8F2..A8F7    ; ID_Continue # Lo   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8FB          ; ID_Continue # Lo       DEVANAGARI HEADSTROKE
+A8FD..A8FE    ; ID_Continue # Lo   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A8FF          ; ID_Continue # Mn       DEVANAGARI VOWEL SIGN AY
+A900..A909    ; ID_Continue # Nd  [10] KAYAH LI DIGIT ZERO..KAYAH LI DIGIT NINE
+A90A..A925    ; ID_Continue # Lo  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A926..A92D    ; ID_Continue # Mn   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
+A930..A946    ; ID_Continue # Lo  [23] REJANG LETTER KA..REJANG LETTER A
+A947..A951    ; ID_Continue # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A952..A953    ; ID_Continue # Mc   [2] REJANG CONSONANT SIGN H..REJANG VIRAMA
+A960..A97C    ; ID_Continue # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A980..A982    ; ID_Continue # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A983          ; ID_Continue # Mc       JAVANESE SIGN WIGNYAN
+A984..A9B2    ; ID_Continue # Lo  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9B3          ; ID_Continue # Mn       JAVANESE SIGN CECAK TELU
+A9B4..A9B5    ; ID_Continue # Mc   [2] JAVANESE VOWEL SIGN TARUNG..JAVANESE VOWEL SIGN TOLONG
+A9B6..A9B9    ; ID_Continue # Mn   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BA..A9BB    ; ID_Continue # Mc   [2] JAVANESE VOWEL SIGN TALING..JAVANESE VOWEL SIGN DIRGA MURE
+A9BC..A9BD    ; ID_Continue # Mn   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9BE..A9C0    ; ID_Continue # Mc   [3] JAVANESE CONSONANT SIGN PENGKAL..JAVANESE PANGKON
+A9CF          ; ID_Continue # Lm       JAVANESE PANGRANGKEP
+A9D0..A9D9    ; ID_Continue # Nd  [10] JAVANESE DIGIT ZERO..JAVANESE DIGIT NINE
+A9E0..A9E4    ; ID_Continue # Lo   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E5          ; ID_Continue # Mn       MYANMAR SIGN SHAN SAW
+A9E6          ; ID_Continue # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+A9E7..A9EF    ; ID_Continue # Lo   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9F0..A9F9    ; ID_Continue # Nd  [10] MYANMAR TAI LAING DIGIT ZERO..MYANMAR TAI LAING DIGIT NINE
+A9FA..A9FE    ; ID_Continue # Lo   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; ID_Continue # Lo  [41] CHAM LETTER A..CHAM LETTER HA
+AA29..AA2E    ; ID_Continue # Mn   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA2F..AA30    ; ID_Continue # Mc   [2] CHAM VOWEL SIGN O..CHAM VOWEL SIGN AI
+AA31..AA32    ; ID_Continue # Mn   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA33..AA34    ; ID_Continue # Mc   [2] CHAM CONSONANT SIGN YA..CHAM CONSONANT SIGN RA
+AA35..AA36    ; ID_Continue # Mn   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA40..AA42    ; ID_Continue # Lo   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA43          ; ID_Continue # Mn       CHAM CONSONANT SIGN FINAL NG
+AA44..AA4B    ; ID_Continue # Lo   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA4C          ; ID_Continue # Mn       CHAM CONSONANT SIGN FINAL M
+AA4D          ; ID_Continue # Mc       CHAM CONSONANT SIGN FINAL H
+AA50..AA59    ; ID_Continue # Nd  [10] CHAM DIGIT ZERO..CHAM DIGIT NINE
+AA60..AA6F    ; ID_Continue # Lo  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA70          ; ID_Continue # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA71..AA76    ; ID_Continue # Lo   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA7A          ; ID_Continue # Lo       MYANMAR LETTER AITON RA
+AA7B          ; ID_Continue # Mc       MYANMAR SIGN PAO KAREN TONE
+AA7C          ; ID_Continue # Mn       MYANMAR SIGN TAI LAING TONE-2
+AA7D          ; ID_Continue # Mc       MYANMAR SIGN TAI LAING TONE-5
+AA7E..AAAF    ; ID_Continue # Lo  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB0          ; ID_Continue # Mn       TAI VIET MAI KANG
+AAB1          ; ID_Continue # Lo       TAI VIET VOWEL AA
+AAB2..AAB4    ; ID_Continue # Mn   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB5..AAB6    ; ID_Continue # Lo   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB7..AAB8    ; ID_Continue # Mn   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AAB9..AABD    ; ID_Continue # Lo   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AABE..AABF    ; ID_Continue # Mn   [2] TAI VIET VOWEL AM..TAI VIET TONE MAI EK
+AAC0          ; ID_Continue # Lo       TAI VIET TONE MAI NUENG
+AAC1          ; ID_Continue # Mn       TAI VIET TONE MAI THO
+AAC2          ; ID_Continue # Lo       TAI VIET TONE MAI SONG
+AADB..AADC    ; ID_Continue # Lo   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AADD          ; ID_Continue # Lm       TAI VIET SYMBOL SAM
+AAE0..AAEA    ; ID_Continue # Lo  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAEB          ; ID_Continue # Mc       MEETEI MAYEK VOWEL SIGN II
+AAEC..AAED    ; ID_Continue # Mn   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAEE..AAEF    ; ID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN AU..MEETEI MAYEK VOWEL SIGN AAU
+AAF2          ; ID_Continue # Lo       MEETEI MAYEK ANJI
+AAF3..AAF4    ; ID_Continue # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AAF5          ; ID_Continue # Mc       MEETEI MAYEK VOWEL SIGN VISARGA
+AAF6          ; ID_Continue # Mn       MEETEI MAYEK VIRAMA
+AB01..AB06    ; ID_Continue # Lo   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; ID_Continue # Lo   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; ID_Continue # Lo   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+AB30..AB5A    ; ID_Continue # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; ID_Continue # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; ID_Continue # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; ID_Continue # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; ID_Continue # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+ABC0..ABE2    ; ID_Continue # Lo  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+ABE3..ABE4    ; ID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN ONAP..MEETEI MAYEK VOWEL SIGN INAP
+ABE5          ; ID_Continue # Mn       MEETEI MAYEK VOWEL SIGN ANAP
+ABE6..ABE7    ; ID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN YENAP..MEETEI MAYEK VOWEL SIGN SOUNAP
+ABE8          ; ID_Continue # Mn       MEETEI MAYEK VOWEL SIGN UNAP
+ABE9..ABEA    ; ID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN CHEINAP..MEETEI MAYEK VOWEL SIGN NUNG
+ABEC          ; ID_Continue # Mc       MEETEI MAYEK LUM IYEK
+ABED          ; ID_Continue # Mn       MEETEI MAYEK APUN IYEK
+ABF0..ABF9    ; ID_Continue # Nd  [10] MEETEI MAYEK DIGIT ZERO..MEETEI MAYEK DIGIT NINE
+AC00..D7A3    ; ID_Continue # Lo [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; ID_Continue # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; ID_Continue # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; ID_Continue # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; ID_Continue # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB00..FB06    ; ID_Continue # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; ID_Continue # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FB1D          ; ID_Continue # Lo       HEBREW LETTER YOD WITH HIRIQ
+FB1E          ; ID_Continue # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
+FB1F..FB28    ; ID_Continue # Lo  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB2A..FB36    ; ID_Continue # Lo  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; ID_Continue # Lo   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; ID_Continue # Lo       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; ID_Continue # Lo   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; ID_Continue # Lo   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; ID_Continue # Lo [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBD3..FD3D    ; ID_Continue # Lo [363] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD50..FD8F    ; ID_Continue # Lo  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; ID_Continue # Lo  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDF0..FDFB    ; ID_Continue # Lo  [12] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE JALLAJALALOUHOU
+FE00..FE0F    ; ID_Continue # Mn  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FE20..FE2F    ; ID_Continue # Mn  [16] COMBINING LIGATURE LEFT HALF..COMBINING CYRILLIC TITLO RIGHT HALF
+FE33..FE34    ; ID_Continue # Pc   [2] PRESENTATION FORM FOR VERTICAL LOW LINE..PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
+FE4D..FE4F    ; ID_Continue # Pc   [3] DASHED LOW LINE..WAVY LOW LINE
+FE70..FE74    ; ID_Continue # Lo   [5] ARABIC FATHATAN ISOLATED FORM..ARABIC KASRATAN ISOLATED FORM
+FE76..FEFC    ; ID_Continue # Lo [135] ARABIC FATHA ISOLATED FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF10..FF19    ; ID_Continue # Nd  [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE
+FF21..FF3A    ; ID_Continue # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF3F          ; ID_Continue # Pc       FULLWIDTH LOW LINE
+FF41..FF5A    ; ID_Continue # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+FF66..FF6F    ; ID_Continue # Lo  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF70          ; ID_Continue # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF71..FF9D    ; ID_Continue # Lo  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FF9E..FF9F    ; ID_Continue # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+FFA0..FFBE    ; ID_Continue # Lo  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; ID_Continue # Lo   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; ID_Continue # Lo   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; ID_Continue # Lo   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; ID_Continue # Lo   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+10000..1000B  ; ID_Continue # Lo  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; ID_Continue # Lo  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; ID_Continue # Lo  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; ID_Continue # Lo   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; ID_Continue # Lo  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; ID_Continue # Lo  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; ID_Continue # Lo [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10140..10174  ; ID_Continue # Nl  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+101FD         ; ID_Continue # Mn       PHAISTOS DISC SIGN COMBINING OBLIQUE STROKE
+10280..1029C  ; ID_Continue # Lo  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; ID_Continue # Lo  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+102E0         ; ID_Continue # Mn       COPTIC EPACT THOUSANDS MARK
+10300..1031F  ; ID_Continue # Lo  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+1032D..10340  ; ID_Continue # Lo  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10341         ; ID_Continue # Nl       GOTHIC LETTER NINETY
+10342..10349  ; ID_Continue # Lo   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+1034A         ; ID_Continue # Nl       GOTHIC LETTER NINE HUNDRED
+10350..10375  ; ID_Continue # Lo  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10376..1037A  ; ID_Continue # Mn   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10380..1039D  ; ID_Continue # Lo  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+103A0..103C3  ; ID_Continue # Lo  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; ID_Continue # Lo   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+103D1..103D5  ; ID_Continue # Nl   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+10400..1044F  ; ID_Continue # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+10450..1049D  ; ID_Continue # Lo  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+104A0..104A9  ; ID_Continue # Nd  [10] OSMANYA DIGIT ZERO..OSMANYA DIGIT NINE
+104B0..104D3  ; ID_Continue # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; ID_Continue # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10500..10527  ; ID_Continue # Lo  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; ID_Continue # Lo  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+10570..1057A  ; ID_Continue # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; ID_Continue # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; ID_Continue # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; ID_Continue # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; ID_Continue # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; ID_Continue # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; ID_Continue # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; ID_Continue # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10600..10736  ; ID_Continue # Lo [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; ID_Continue # Lo  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; ID_Continue # Lo   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10780..10785  ; ID_Continue # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; ID_Continue # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; ID_Continue # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10800..10805  ; ID_Continue # Lo   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; ID_Continue # Lo       CYPRIOT SYLLABLE JO
+1080A..10835  ; ID_Continue # Lo  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; ID_Continue # Lo   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; ID_Continue # Lo       CYPRIOT SYLLABLE ZA
+1083F..10855  ; ID_Continue # Lo  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10860..10876  ; ID_Continue # Lo  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10880..1089E  ; ID_Continue # Lo  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108E0..108F2  ; ID_Continue # Lo  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; ID_Continue # Lo   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+10900..10915  ; ID_Continue # Lo  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10920..10939  ; ID_Continue # Lo  [26] LYDIAN LETTER A..LYDIAN LETTER C
+10980..109B7  ; ID_Continue # Lo  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BE..109BF  ; ID_Continue # Lo   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+10A00         ; ID_Continue # Lo       KHAROSHTHI LETTER A
+10A01..10A03  ; ID_Continue # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; ID_Continue # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; ID_Continue # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A10..10A13  ; ID_Continue # Lo   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; ID_Continue # Lo   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; ID_Continue # Lo  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A38..10A3A  ; ID_Continue # Mn   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
+10A3F         ; ID_Continue # Mn       KHAROSHTHI VIRAMA
+10A60..10A7C  ; ID_Continue # Lo  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A80..10A9C  ; ID_Continue # Lo  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10AC0..10AC7  ; ID_Continue # Lo   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC9..10AE4  ; ID_Continue # Lo  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10AE5..10AE6  ; ID_Continue # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10B00..10B35  ; ID_Continue # Lo  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B40..10B55  ; ID_Continue # Lo  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B60..10B72  ; ID_Continue # Lo  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B80..10B91  ; ID_Continue # Lo  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10C00..10C48  ; ID_Continue # Lo  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10C80..10CB2  ; ID_Continue # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; ID_Continue # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+10D00..10D23  ; ID_Continue # Lo  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10D24..10D27  ; ID_Continue # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10D30..10D39  ; ID_Continue # Nd  [10] HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA DIGIT NINE
+10E80..10EA9  ; ID_Continue # Lo  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EAB..10EAC  ; ID_Continue # Mn   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EB0..10EB1  ; ID_Continue # Lo   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10EFD..10EFF  ; ID_Continue # Mn   [3] ARABIC SMALL LOW WORD SAKTA..ARABIC SMALL LOW WORD MADDA
+10F00..10F1C  ; ID_Continue # Lo  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F27         ; ID_Continue # Lo       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; ID_Continue # Lo  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F46..10F50  ; ID_Continue # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
+10F70..10F81  ; ID_Continue # Lo  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10F82..10F85  ; ID_Continue # Mn   [4] OLD UYGHUR COMBINING DOT ABOVE..OLD UYGHUR COMBINING TWO DOTS BELOW
+10FB0..10FC4  ; ID_Continue # Lo  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FE0..10FF6  ; ID_Continue # Lo  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11000         ; ID_Continue # Mc       BRAHMI SIGN CANDRABINDU
+11001         ; ID_Continue # Mn       BRAHMI SIGN ANUSVARA
+11002         ; ID_Continue # Mc       BRAHMI SIGN VISARGA
+11003..11037  ; ID_Continue # Lo  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11038..11046  ; ID_Continue # Mn  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
+11066..1106F  ; ID_Continue # Nd  [10] BRAHMI DIGIT ZERO..BRAHMI DIGIT NINE
+11070         ; ID_Continue # Mn       BRAHMI SIGN OLD TAMIL VIRAMA
+11071..11072  ; ID_Continue # Lo   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11073..11074  ; ID_Continue # Mn   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+11075         ; ID_Continue # Lo       BRAHMI LETTER OLD TAMIL LLA
+1107F..11081  ; ID_Continue # Mn   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
+11082         ; ID_Continue # Mc       KAITHI SIGN VISARGA
+11083..110AF  ; ID_Continue # Lo  [45] KAITHI LETTER A..KAITHI LETTER HA
+110B0..110B2  ; ID_Continue # Mc   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
+110B3..110B6  ; ID_Continue # Mn   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B7..110B8  ; ID_Continue # Mc   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
+110B9..110BA  ; ID_Continue # Mn   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
+110C2         ; ID_Continue # Mn       KAITHI VOWEL SIGN VOCALIC R
+110D0..110E8  ; ID_Continue # Lo  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+110F0..110F9  ; ID_Continue # Nd  [10] SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT NINE
+11100..11102  ; ID_Continue # Mn   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11103..11126  ; ID_Continue # Lo  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+11127..1112B  ; ID_Continue # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112C         ; ID_Continue # Mc       CHAKMA VOWEL SIGN E
+1112D..11134  ; ID_Continue # Mn   [8] CHAKMA VOWEL SIGN AI..CHAKMA MAAYYAA
+11136..1113F  ; ID_Continue # Nd  [10] CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE
+11144         ; ID_Continue # Lo       CHAKMA LETTER LHAA
+11145..11146  ; ID_Continue # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
+11147         ; ID_Continue # Lo       CHAKMA LETTER VAA
+11150..11172  ; ID_Continue # Lo  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11173         ; ID_Continue # Mn       MAHAJANI SIGN NUKTA
+11176         ; ID_Continue # Lo       MAHAJANI LIGATURE SHRI
+11180..11181  ; ID_Continue # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+11182         ; ID_Continue # Mc       SHARADA SIGN VISARGA
+11183..111B2  ; ID_Continue # Lo  [48] SHARADA LETTER A..SHARADA LETTER HA
+111B3..111B5  ; ID_Continue # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
+111B6..111BE  ; ID_Continue # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111BF..111C0  ; ID_Continue # Mc   [2] SHARADA VOWEL SIGN AU..SHARADA SIGN VIRAMA
+111C1..111C4  ; ID_Continue # Lo   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111C9..111CC  ; ID_Continue # Mn   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
+111CE         ; ID_Continue # Mc       SHARADA VOWEL SIGN PRISHTHAMATRA E
+111CF         ; ID_Continue # Mn       SHARADA SIGN INVERTED CANDRABINDU
+111D0..111D9  ; ID_Continue # Nd  [10] SHARADA DIGIT ZERO..SHARADA DIGIT NINE
+111DA         ; ID_Continue # Lo       SHARADA EKAM
+111DC         ; ID_Continue # Lo       SHARADA HEADSTROKE
+11200..11211  ; ID_Continue # Lo  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; ID_Continue # Lo  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1122C..1122E  ; ID_Continue # Mc   [3] KHOJKI VOWEL SIGN AA..KHOJKI VOWEL SIGN II
+1122F..11231  ; ID_Continue # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11232..11233  ; ID_Continue # Mc   [2] KHOJKI VOWEL SIGN O..KHOJKI VOWEL SIGN AU
+11234         ; ID_Continue # Mn       KHOJKI SIGN ANUSVARA
+11235         ; ID_Continue # Mc       KHOJKI SIGN VIRAMA
+11236..11237  ; ID_Continue # Mn   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
+1123E         ; ID_Continue # Mn       KHOJKI SIGN SUKUN
+1123F..11240  ; ID_Continue # Lo   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11241         ; ID_Continue # Mn       KHOJKI VOWEL SIGN VOCALIC R
+11280..11286  ; ID_Continue # Lo   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; ID_Continue # Lo       MULTANI LETTER GHA
+1128A..1128D  ; ID_Continue # Lo   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; ID_Continue # Lo  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; ID_Continue # Lo  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112B0..112DE  ; ID_Continue # Lo  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+112DF         ; ID_Continue # Mn       KHUDAWADI SIGN ANUSVARA
+112E0..112E2  ; ID_Continue # Mc   [3] KHUDAWADI VOWEL SIGN AA..KHUDAWADI VOWEL SIGN II
+112E3..112EA  ; ID_Continue # Mn   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
+112F0..112F9  ; ID_Continue # Nd  [10] KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE
+11300..11301  ; ID_Continue # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+11302..11303  ; ID_Continue # Mc   [2] GRANTHA SIGN ANUSVARA..GRANTHA SIGN VISARGA
+11305..1130C  ; ID_Continue # Lo   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; ID_Continue # Lo   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; ID_Continue # Lo  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; ID_Continue # Lo   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; ID_Continue # Lo   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; ID_Continue # Lo   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133B..1133C  ; ID_Continue # Mn   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
+1133D         ; ID_Continue # Lo       GRANTHA SIGN AVAGRAHA
+1133E..1133F  ; ID_Continue # Mc   [2] GRANTHA VOWEL SIGN AA..GRANTHA VOWEL SIGN I
+11340         ; ID_Continue # Mn       GRANTHA VOWEL SIGN II
+11341..11344  ; ID_Continue # Mc   [4] GRANTHA VOWEL SIGN U..GRANTHA VOWEL SIGN VOCALIC RR
+11347..11348  ; ID_Continue # Mc   [2] GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
+1134B..1134D  ; ID_Continue # Mc   [3] GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA
+11350         ; ID_Continue # Lo       GRANTHA OM
+11357         ; ID_Continue # Mc       GRANTHA AU LENGTH MARK
+1135D..11361  ; ID_Continue # Lo   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11362..11363  ; ID_Continue # Mc   [2] GRANTHA VOWEL SIGN VOCALIC L..GRANTHA VOWEL SIGN VOCALIC LL
+11366..1136C  ; ID_Continue # Mn   [7] COMBINING GRANTHA DIGIT ZERO..COMBINING GRANTHA DIGIT SIX
+11370..11374  ; ID_Continue # Mn   [5] COMBINING GRANTHA LETTER A..COMBINING GRANTHA LETTER PA
+11400..11434  ; ID_Continue # Lo  [53] NEWA LETTER A..NEWA LETTER HA
+11435..11437  ; ID_Continue # Mc   [3] NEWA VOWEL SIGN AA..NEWA VOWEL SIGN II
+11438..1143F  ; ID_Continue # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11440..11441  ; ID_Continue # Mc   [2] NEWA VOWEL SIGN O..NEWA VOWEL SIGN AU
+11442..11444  ; ID_Continue # Mn   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
+11445         ; ID_Continue # Mc       NEWA SIGN VISARGA
+11446         ; ID_Continue # Mn       NEWA SIGN NUKTA
+11447..1144A  ; ID_Continue # Lo   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+11450..11459  ; ID_Continue # Nd  [10] NEWA DIGIT ZERO..NEWA DIGIT NINE
+1145E         ; ID_Continue # Mn       NEWA SANDHI MARK
+1145F..11461  ; ID_Continue # Lo   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; ID_Continue # Lo  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114B0..114B2  ; ID_Continue # Mc   [3] TIRHUTA VOWEL SIGN AA..TIRHUTA VOWEL SIGN II
+114B3..114B8  ; ID_Continue # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114B9         ; ID_Continue # Mc       TIRHUTA VOWEL SIGN E
+114BA         ; ID_Continue # Mn       TIRHUTA VOWEL SIGN SHORT E
+114BB..114BE  ; ID_Continue # Mc   [4] TIRHUTA VOWEL SIGN AI..TIRHUTA VOWEL SIGN AU
+114BF..114C0  ; ID_Continue # Mn   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C1         ; ID_Continue # Mc       TIRHUTA SIGN VISARGA
+114C2..114C3  ; ID_Continue # Mn   [2] TIRHUTA SIGN VIRAMA..TIRHUTA SIGN NUKTA
+114C4..114C5  ; ID_Continue # Lo   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C7         ; ID_Continue # Lo       TIRHUTA OM
+114D0..114D9  ; ID_Continue # Nd  [10] TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE
+11580..115AE  ; ID_Continue # Lo  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115AF..115B1  ; ID_Continue # Mc   [3] SIDDHAM VOWEL SIGN AA..SIDDHAM VOWEL SIGN II
+115B2..115B5  ; ID_Continue # Mn   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115B8..115BB  ; ID_Continue # Mc   [4] SIDDHAM VOWEL SIGN E..SIDDHAM VOWEL SIGN AU
+115BC..115BD  ; ID_Continue # Mn   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BE         ; ID_Continue # Mc       SIDDHAM SIGN VISARGA
+115BF..115C0  ; ID_Continue # Mn   [2] SIDDHAM SIGN VIRAMA..SIDDHAM SIGN NUKTA
+115D8..115DB  ; ID_Continue # Lo   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+115DC..115DD  ; ID_Continue # Mn   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11600..1162F  ; ID_Continue # Lo  [48] MODI LETTER A..MODI LETTER LLA
+11630..11632  ; ID_Continue # Mc   [3] MODI VOWEL SIGN AA..MODI VOWEL SIGN II
+11633..1163A  ; ID_Continue # Mn   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163B..1163C  ; ID_Continue # Mc   [2] MODI VOWEL SIGN O..MODI VOWEL SIGN AU
+1163D         ; ID_Continue # Mn       MODI SIGN ANUSVARA
+1163E         ; ID_Continue # Mc       MODI SIGN VISARGA
+1163F..11640  ; ID_Continue # Mn   [2] MODI SIGN VIRAMA..MODI SIGN ARDHACANDRA
+11644         ; ID_Continue # Lo       MODI SIGN HUVA
+11650..11659  ; ID_Continue # Nd  [10] MODI DIGIT ZERO..MODI DIGIT NINE
+11680..116AA  ; ID_Continue # Lo  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116AB         ; ID_Continue # Mn       TAKRI SIGN ANUSVARA
+116AC         ; ID_Continue # Mc       TAKRI SIGN VISARGA
+116AD         ; ID_Continue # Mn       TAKRI VOWEL SIGN AA
+116AE..116AF  ; ID_Continue # Mc   [2] TAKRI VOWEL SIGN I..TAKRI VOWEL SIGN II
+116B0..116B5  ; ID_Continue # Mn   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B6         ; ID_Continue # Mc       TAKRI SIGN VIRAMA
+116B7         ; ID_Continue # Mn       TAKRI SIGN NUKTA
+116B8         ; ID_Continue # Lo       TAKRI LETTER ARCHAIC KHA
+116C0..116C9  ; ID_Continue # Nd  [10] TAKRI DIGIT ZERO..TAKRI DIGIT NINE
+11700..1171A  ; ID_Continue # Lo  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+1171D..1171F  ; ID_Continue # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11720..11721  ; ID_Continue # Mc   [2] AHOM VOWEL SIGN A..AHOM VOWEL SIGN AA
+11722..11725  ; ID_Continue # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11726         ; ID_Continue # Mc       AHOM VOWEL SIGN E
+11727..1172B  ; ID_Continue # Mn   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
+11730..11739  ; ID_Continue # Nd  [10] AHOM DIGIT ZERO..AHOM DIGIT NINE
+11740..11746  ; ID_Continue # Lo   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; ID_Continue # Lo  [44] DOGRA LETTER A..DOGRA LETTER RRA
+1182C..1182E  ; ID_Continue # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+1182F..11837  ; ID_Continue # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11838         ; ID_Continue # Mc       DOGRA SIGN VISARGA
+11839..1183A  ; ID_Continue # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+118A0..118DF  ; ID_Continue # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+118E0..118E9  ; ID_Continue # Nd  [10] WARANG CITI DIGIT ZERO..WARANG CITI DIGIT NINE
+118FF..11906  ; ID_Continue # Lo   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; ID_Continue # Lo       DIVES AKURU LETTER O
+1190C..11913  ; ID_Continue # Lo   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; ID_Continue # Lo   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; ID_Continue # Lo  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+11930..11935  ; ID_Continue # Mc   [6] DIVES AKURU VOWEL SIGN AA..DIVES AKURU VOWEL SIGN E
+11937..11938  ; ID_Continue # Mc   [2] DIVES AKURU VOWEL SIGN AI..DIVES AKURU VOWEL SIGN O
+1193B..1193C  ; ID_Continue # Mn   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193D         ; ID_Continue # Mc       DIVES AKURU SIGN HALANTA
+1193E         ; ID_Continue # Mn       DIVES AKURU VIRAMA
+1193F         ; ID_Continue # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11940         ; ID_Continue # Mc       DIVES AKURU MEDIAL YA
+11941         ; ID_Continue # Lo       DIVES AKURU INITIAL RA
+11942         ; ID_Continue # Mc       DIVES AKURU MEDIAL RA
+11943         ; ID_Continue # Mn       DIVES AKURU SIGN NUKTA
+11950..11959  ; ID_Continue # Nd  [10] DIVES AKURU DIGIT ZERO..DIVES AKURU DIGIT NINE
+119A0..119A7  ; ID_Continue # Lo   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; ID_Continue # Lo  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119D1..119D3  ; ID_Continue # Mc   [3] NANDINAGARI VOWEL SIGN AA..NANDINAGARI VOWEL SIGN II
+119D4..119D7  ; ID_Continue # Mn   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; ID_Continue # Mn   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119DC..119DF  ; ID_Continue # Mc   [4] NANDINAGARI VOWEL SIGN O..NANDINAGARI SIGN VISARGA
+119E0         ; ID_Continue # Mn       NANDINAGARI SIGN VIRAMA
+119E1         ; ID_Continue # Lo       NANDINAGARI SIGN AVAGRAHA
+119E3         ; ID_Continue # Lo       NANDINAGARI HEADSTROKE
+119E4         ; ID_Continue # Mc       NANDINAGARI VOWEL SIGN PRISHTHAMATRA E
+11A00         ; ID_Continue # Lo       ZANABAZAR SQUARE LETTER A
+11A01..11A0A  ; ID_Continue # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A0B..11A32  ; ID_Continue # Lo  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A33..11A38  ; ID_Continue # Mn   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
+11A39         ; ID_Continue # Mc       ZANABAZAR SQUARE SIGN VISARGA
+11A3A         ; ID_Continue # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A3B..11A3E  ; ID_Continue # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A47         ; ID_Continue # Mn       ZANABAZAR SQUARE SUBJOINER
+11A50         ; ID_Continue # Lo       SOYOMBO LETTER A
+11A51..11A56  ; ID_Continue # Mn   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A57..11A58  ; ID_Continue # Mc   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
+11A59..11A5B  ; ID_Continue # Mn   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A5C..11A89  ; ID_Continue # Lo  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A8A..11A96  ; ID_Continue # Mn  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A97         ; ID_Continue # Mc       SOYOMBO SIGN VISARGA
+11A98..11A99  ; ID_Continue # Mn   [2] SOYOMBO GEMINATION MARK..SOYOMBO SUBJOINER
+11A9D         ; ID_Continue # Lo       SOYOMBO MARK PLUTA
+11AB0..11AF8  ; ID_Continue # Lo  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11C00..11C08  ; ID_Continue # Lo   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; ID_Continue # Lo  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C2F         ; ID_Continue # Mc       BHAIKSUKI VOWEL SIGN AA
+11C30..11C36  ; ID_Continue # Mn   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; ID_Continue # Mn   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3E         ; ID_Continue # Mc       BHAIKSUKI SIGN VISARGA
+11C3F         ; ID_Continue # Mn       BHAIKSUKI SIGN VIRAMA
+11C40         ; ID_Continue # Lo       BHAIKSUKI SIGN AVAGRAHA
+11C50..11C59  ; ID_Continue # Nd  [10] BHAIKSUKI DIGIT ZERO..BHAIKSUKI DIGIT NINE
+11C72..11C8F  ; ID_Continue # Lo  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11C92..11CA7  ; ID_Continue # Mn  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CA9         ; ID_Continue # Mc       MARCHEN SUBJOINED LETTER YA
+11CAA..11CB0  ; ID_Continue # Mn   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB1         ; ID_Continue # Mc       MARCHEN VOWEL SIGN I
+11CB2..11CB3  ; ID_Continue # Mn   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB4         ; ID_Continue # Mc       MARCHEN VOWEL SIGN O
+11CB5..11CB6  ; ID_Continue # Mn   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D00..11D06  ; ID_Continue # Lo   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; ID_Continue # Lo   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; ID_Continue # Lo  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D31..11D36  ; ID_Continue # Mn   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; ID_Continue # Mn       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; ID_Continue # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D45  ; ID_Continue # Mn   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
+11D46         ; ID_Continue # Lo       MASARAM GONDI REPHA
+11D47         ; ID_Continue # Mn       MASARAM GONDI RA-KARA
+11D50..11D59  ; ID_Continue # Nd  [10] MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT NINE
+11D60..11D65  ; ID_Continue # Lo   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; ID_Continue # Lo   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; ID_Continue # Lo  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D8A..11D8E  ; ID_Continue # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D90..11D91  ; ID_Continue # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D93..11D94  ; ID_Continue # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D95         ; ID_Continue # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D96         ; ID_Continue # Mc       GUNJALA GONDI SIGN VISARGA
+11D97         ; ID_Continue # Mn       GUNJALA GONDI VIRAMA
+11D98         ; ID_Continue # Lo       GUNJALA GONDI OM
+11DA0..11DA9  ; ID_Continue # Nd  [10] GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT NINE
+11EE0..11EF2  ; ID_Continue # Lo  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11EF3..11EF4  ; ID_Continue # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11EF5..11EF6  ; ID_Continue # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
+11F00..11F01  ; ID_Continue # Mn   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F02         ; ID_Continue # Lo       KAWI SIGN REPHA
+11F03         ; ID_Continue # Mc       KAWI SIGN VISARGA
+11F04..11F10  ; ID_Continue # Lo  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; ID_Continue # Lo  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11F34..11F35  ; ID_Continue # Mc   [2] KAWI VOWEL SIGN AA..KAWI VOWEL SIGN ALTERNATE AA
+11F36..11F3A  ; ID_Continue # Mn   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F3E..11F3F  ; ID_Continue # Mc   [2] KAWI VOWEL SIGN E..KAWI VOWEL SIGN AI
+11F40         ; ID_Continue # Mn       KAWI VOWEL SIGN EU
+11F41         ; ID_Continue # Mc       KAWI SIGN KILLER
+11F42         ; ID_Continue # Mn       KAWI CONJOINER
+11F50..11F59  ; ID_Continue # Nd  [10] KAWI DIGIT ZERO..KAWI DIGIT NINE
+11FB0         ; ID_Continue # Lo       LISU LETTER YHA
+12000..12399  ; ID_Continue # Lo [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12400..1246E  ; ID_Continue # Nl [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+12480..12543  ; ID_Continue # Lo [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; ID_Continue # Lo  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+13000..1342F  ; ID_Continue # Lo [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13440         ; ID_Continue # Mn       EGYPTIAN HIEROGLYPH MIRROR HORIZONTALLY
+13441..13446  ; ID_Continue # Lo   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+13447..13455  ; ID_Continue # Mn  [15] EGYPTIAN HIEROGLYPH MODIFIER DAMAGED AT TOP START..EGYPTIAN HIEROGLYPH MODIFIER DAMAGED
+14400..14646  ; ID_Continue # Lo [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; ID_Continue # Lo [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; ID_Continue # Lo  [31] MRO LETTER TA..MRO LETTER TEK
+16A60..16A69  ; ID_Continue # Nd  [10] MRO DIGIT ZERO..MRO DIGIT NINE
+16A70..16ABE  ; ID_Continue # Lo  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AC0..16AC9  ; ID_Continue # Nd  [10] TANGSA DIGIT ZERO..TANGSA DIGIT NINE
+16AD0..16AED  ; ID_Continue # Lo  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16AF0..16AF4  ; ID_Continue # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
+16B00..16B2F  ; ID_Continue # Lo  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B30..16B36  ; ID_Continue # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
+16B40..16B43  ; ID_Continue # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16B50..16B59  ; ID_Continue # Nd  [10] PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT NINE
+16B63..16B77  ; ID_Continue # Lo  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; ID_Continue # Lo  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16E40..16E7F  ; ID_Continue # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+16F00..16F4A  ; ID_Continue # Lo  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F4F         ; ID_Continue # Mn       MIAO SIGN CONSONANT MODIFIER BAR
+16F50         ; ID_Continue # Lo       MIAO LETTER NASALIZATION
+16F51..16F87  ; ID_Continue # Mc  [55] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN UI
+16F8F..16F92  ; ID_Continue # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16F93..16F9F  ; ID_Continue # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; ID_Continue # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; ID_Continue # Lm       OLD CHINESE ITERATION MARK
+16FE4         ; ID_Continue # Mn       KHITAN SMALL SCRIPT FILLER
+16FF0..16FF1  ; ID_Continue # Mc   [2] VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
+17000..187F7  ; ID_Continue # Lo [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; ID_Continue # Lo [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; ID_Continue # Lo   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1AFF0..1AFF3  ; ID_Continue # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; ID_Continue # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; ID_Continue # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1B000..1B122  ; ID_Continue # Lo [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; ID_Continue # Lo       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; ID_Continue # Lo   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; ID_Continue # Lo       KATAKANA LETTER SMALL KO
+1B164..1B167  ; ID_Continue # Lo   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; ID_Continue # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; ID_Continue # Lo [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; ID_Continue # Lo  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; ID_Continue # Lo   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; ID_Continue # Lo  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1BC9D..1BC9E  ; ID_Continue # Mn   [2] DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUBLE MARK
+1CF00..1CF2D  ; ID_Continue # Mn  [46] ZNAMENNY COMBINING MARK GORAZDO NIZKO S KRYZHEM ON LEFT..ZNAMENNY COMBINING MARK KRYZH ON LEFT
+1CF30..1CF46  ; ID_Continue # Mn  [23] ZNAMENNY COMBINING TONAL RANGE MARK MRACHNO..ZNAMENNY PRIZNAK MODIFIER ROG
+1D165..1D166  ; ID_Continue # Mc   [2] MUSICAL SYMBOL COMBINING STEM..MUSICAL SYMBOL COMBINING SPRECHGESANG STEM
+1D167..1D169  ; ID_Continue # Mn   [3] MUSICAL SYMBOL COMBINING TREMOLO-1..MUSICAL SYMBOL COMBINING TREMOLO-3
+1D16D..1D172  ; ID_Continue # Mc   [6] MUSICAL SYMBOL COMBINING AUGMENTATION DOT..MUSICAL SYMBOL COMBINING FLAG-5
+1D17B..1D182  ; ID_Continue # Mn   [8] MUSICAL SYMBOL COMBINING ACCENT..MUSICAL SYMBOL COMBINING LOURE
+1D185..1D18B  ; ID_Continue # Mn   [7] MUSICAL SYMBOL COMBINING DOIT..MUSICAL SYMBOL COMBINING TRIPLE TONGUE
+1D1AA..1D1AD  ; ID_Continue # Mn   [4] MUSICAL SYMBOL COMBINING DOWN BOW..MUSICAL SYMBOL COMBINING SNAP PIZZICATO
+1D242..1D244  ; ID_Continue # Mn   [3] COMBINING GREEK MUSICAL TRISEME..COMBINING GREEK MUSICAL PENTASEME
+1D400..1D454  ; ID_Continue # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; ID_Continue # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; ID_Continue # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; ID_Continue # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; ID_Continue # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; ID_Continue # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; ID_Continue # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; ID_Continue # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; ID_Continue # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; ID_Continue # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; ID_Continue # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; ID_Continue # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; ID_Continue # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; ID_Continue # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; ID_Continue # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; ID_Continue # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; ID_Continue # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; ID_Continue # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; ID_Continue # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; ID_Continue # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C2..1D6DA  ; ID_Continue # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6FA  ; ID_Continue # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FC..1D714  ; ID_Continue # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D734  ; ID_Continue # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D736..1D74E  ; ID_Continue # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D76E  ; ID_Continue # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D770..1D788  ; ID_Continue # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D7A8  ; ID_Continue # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7AA..1D7C2  ; ID_Continue # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7CB  ; ID_Continue # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1D7CE..1D7FF  ; ID_Continue # Nd  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
+1DA00..1DA36  ; ID_Continue # Mn  [55] SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING IN
+1DA3B..1DA6C  ; ID_Continue # Mn  [50] SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
+1DA75         ; ID_Continue # Mn       SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
+1DA84         ; ID_Continue # Mn       SIGNWRITING LOCATION HEAD NECK
+1DA9B..1DA9F  ; ID_Continue # Mn   [5] SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL MODIFIER-6
+1DAA1..1DAAF  ; ID_Continue # Mn  [15] SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING ROTATION MODIFIER-16
+1DF00..1DF09  ; ID_Continue # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0A         ; ID_Continue # Lo       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1DF0B..1DF1E  ; ID_Continue # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; ID_Continue # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E000..1E006  ; ID_Continue # Mn   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; ID_Continue # Mn  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; ID_Continue # Mn   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; ID_Continue # Mn   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; ID_Continue # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E030..1E06D  ; ID_Continue # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E08F         ; ID_Continue # Mn       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E100..1E12C  ; ID_Continue # Lo  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E130..1E136  ; ID_Continue # Mn   [7] NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACHUE HMONG TONE-D
+1E137..1E13D  ; ID_Continue # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E140..1E149  ; ID_Continue # Nd  [10] NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG PUACHUE HMONG DIGIT NINE
+1E14E         ; ID_Continue # Lo       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E290..1E2AD  ; ID_Continue # Lo  [30] TOTO LETTER PA..TOTO LETTER A
+1E2AE         ; ID_Continue # Mn       TOTO SIGN RISING TONE
+1E2C0..1E2EB  ; ID_Continue # Lo  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E2EC..1E2EF  ; ID_Continue # Mn   [4] WANCHO TONE TUP..WANCHO TONE KOINI
+1E2F0..1E2F9  ; ID_Continue # Nd  [10] WANCHO DIGIT ZERO..WANCHO DIGIT NINE
+1E4D0..1E4EA  ; ID_Continue # Lo  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E4EB         ; ID_Continue # Lm       NAG MUNDARI SIGN OJOD
+1E4EC..1E4EF  ; ID_Continue # Mn   [4] NAG MUNDARI SIGN MUHOR..NAG MUNDARI SIGN SUTUH
+1E4F0..1E4F9  ; ID_Continue # Nd  [10] NAG MUNDARI DIGIT ZERO..NAG MUNDARI DIGIT NINE
+1E7E0..1E7E6  ; ID_Continue # Lo   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; ID_Continue # Lo   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; ID_Continue # Lo   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; ID_Continue # Lo  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; ID_Continue # Lo [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1E8D0..1E8D6  ; ID_Continue # Mn   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
+1E900..1E943  ; ID_Continue # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1E944..1E94A  ; ID_Continue # Mn   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+1E94B         ; ID_Continue # Lm       ADLAM NASALIZATION MARK
+1E950..1E959  ; ID_Continue # Nd  [10] ADLAM DIGIT ZERO..ADLAM DIGIT NINE
+1EE00..1EE03  ; ID_Continue # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; ID_Continue # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; ID_Continue # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; ID_Continue # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; ID_Continue # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; ID_Continue # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; ID_Continue # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; ID_Continue # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; ID_Continue # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; ID_Continue # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; ID_Continue # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; ID_Continue # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; ID_Continue # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; ID_Continue # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; ID_Continue # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; ID_Continue # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; ID_Continue # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; ID_Continue # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; ID_Continue # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; ID_Continue # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; ID_Continue # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; ID_Continue # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; ID_Continue # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; ID_Continue # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+1FBF0..1FBF9  ; ID_Continue # Nd  [10] SEGMENTED DIGIT ZERO..SEGMENTED DIGIT NINE
+20000..2A6DF  ; ID_Continue # Lo [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; ID_Continue # Lo [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; ID_Continue # Lo [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; ID_Continue # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; ID_Continue # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; ID_Continue # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; ID_Continue # Lo [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; ID_Continue # Lo [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+E0100..E01EF  ; ID_Continue # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+
+# Total code points: 139482
+
+# ================================================
+
+# Derived Property: XID_Start
+#  ID_Start modified for closure under NFKx
+#  Modified as described in UAX #15
+#  NOTE: Does NOT remove the non-NFKx characters.
+#        Merely ensures that if isIdentifer(string) then isIdentifier(NFKx(string))
+#  NOTE: See UAX #31 for more information
+
+0041..005A    ; XID_Start # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+0061..007A    ; XID_Start # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; XID_Start # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; XID_Start # L&       MICRO SIGN
+00BA          ; XID_Start # Lo       MASCULINE ORDINAL INDICATOR
+00C0..00D6    ; XID_Start # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; XID_Start # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..01BA    ; XID_Start # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BB          ; XID_Start # Lo       LATIN LETTER TWO WITH STROKE
+01BC..01BF    ; XID_Start # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C0..01C3    ; XID_Start # Lo   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+01C4..0293    ; XID_Start # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0294          ; XID_Start # Lo       LATIN LETTER GLOTTAL STOP
+0295..02AF    ; XID_Start # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02C1    ; XID_Start # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C6..02D1    ; XID_Start # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02E0..02E4    ; XID_Start # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02EC          ; XID_Start # Lm       MODIFIER LETTER VOICING
+02EE          ; XID_Start # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+0370..0373    ; XID_Start # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0374          ; XID_Start # Lm       GREEK NUMERAL SIGN
+0376..0377    ; XID_Start # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037B..037D    ; XID_Start # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; XID_Start # L&       GREEK CAPITAL LETTER YOT
+0386          ; XID_Start # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; XID_Start # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; XID_Start # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; XID_Start # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; XID_Start # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F7..0481    ; XID_Start # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+048A..052F    ; XID_Start # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; XID_Start # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0559          ; XID_Start # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+0560..0588    ; XID_Start # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+05D0..05EA    ; XID_Start # Lo  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; XID_Start # Lo   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+0620..063F    ; XID_Start # Lo  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0640          ; XID_Start # Lm       ARABIC TATWEEL
+0641..064A    ; XID_Start # Lo  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+066E..066F    ; XID_Start # Lo   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0671..06D3    ; XID_Start # Lo  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D5          ; XID_Start # Lo       ARABIC LETTER AE
+06E5..06E6    ; XID_Start # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06EE..06EF    ; XID_Start # Lo   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06FA..06FC    ; XID_Start # Lo   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FF          ; XID_Start # Lo       ARABIC LETTER HEH WITH INVERTED V
+0710          ; XID_Start # Lo       SYRIAC LETTER ALAPH
+0712..072F    ; XID_Start # Lo  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+074D..07A5    ; XID_Start # Lo  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07B1          ; XID_Start # Lo       THAANA LETTER NAA
+07CA..07EA    ; XID_Start # Lo  [33] NKO LETTER A..NKO LETTER JONA RA
+07F4..07F5    ; XID_Start # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; XID_Start # Lm       NKO LAJANYALAN
+0800..0815    ; XID_Start # Lo  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+081A          ; XID_Start # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+0824          ; XID_Start # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0828          ; XID_Start # Lm       SAMARITAN MODIFIER LETTER I
+0840..0858    ; XID_Start # Lo  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+0860..086A    ; XID_Start # Lo  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; XID_Start # Lo  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0889..088E    ; XID_Start # Lo   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+08A0..08C8    ; XID_Start # Lo  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+08C9          ; XID_Start # Lm       ARABIC SMALL FARSI YEH
+0904..0939    ; XID_Start # Lo  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093D          ; XID_Start # Lo       DEVANAGARI SIGN AVAGRAHA
+0950          ; XID_Start # Lo       DEVANAGARI OM
+0958..0961    ; XID_Start # Lo  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0971          ; XID_Start # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0972..0980    ; XID_Start # Lo  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0985..098C    ; XID_Start # Lo   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; XID_Start # Lo   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; XID_Start # Lo  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; XID_Start # Lo   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; XID_Start # Lo       BENGALI LETTER LA
+09B6..09B9    ; XID_Start # Lo   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BD          ; XID_Start # Lo       BENGALI SIGN AVAGRAHA
+09CE          ; XID_Start # Lo       BENGALI LETTER KHANDA TA
+09DC..09DD    ; XID_Start # Lo   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; XID_Start # Lo   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09F0..09F1    ; XID_Start # Lo   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09FC          ; XID_Start # Lo       BENGALI LETTER VEDIC ANUSVARA
+0A05..0A0A    ; XID_Start # Lo   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; XID_Start # Lo   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; XID_Start # Lo  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; XID_Start # Lo   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; XID_Start # Lo   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; XID_Start # Lo   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; XID_Start # Lo   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A59..0A5C    ; XID_Start # Lo   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; XID_Start # Lo       GURMUKHI LETTER FA
+0A72..0A74    ; XID_Start # Lo   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A85..0A8D    ; XID_Start # Lo   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; XID_Start # Lo   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; XID_Start # Lo  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; XID_Start # Lo   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; XID_Start # Lo   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; XID_Start # Lo   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABD          ; XID_Start # Lo       GUJARATI SIGN AVAGRAHA
+0AD0          ; XID_Start # Lo       GUJARATI OM
+0AE0..0AE1    ; XID_Start # Lo   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AF9          ; XID_Start # Lo       GUJARATI LETTER ZHA
+0B05..0B0C    ; XID_Start # Lo   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; XID_Start # Lo   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; XID_Start # Lo  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; XID_Start # Lo   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; XID_Start # Lo   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; XID_Start # Lo   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3D          ; XID_Start # Lo       ORIYA SIGN AVAGRAHA
+0B5C..0B5D    ; XID_Start # Lo   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; XID_Start # Lo   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B71          ; XID_Start # Lo       ORIYA LETTER WA
+0B83          ; XID_Start # Lo       TAMIL SIGN VISARGA
+0B85..0B8A    ; XID_Start # Lo   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; XID_Start # Lo   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; XID_Start # Lo   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; XID_Start # Lo   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; XID_Start # Lo       TAMIL LETTER JA
+0B9E..0B9F    ; XID_Start # Lo   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; XID_Start # Lo   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; XID_Start # Lo   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; XID_Start # Lo  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BD0          ; XID_Start # Lo       TAMIL OM
+0C05..0C0C    ; XID_Start # Lo   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; XID_Start # Lo   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; XID_Start # Lo  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; XID_Start # Lo  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3D          ; XID_Start # Lo       TELUGU SIGN AVAGRAHA
+0C58..0C5A    ; XID_Start # Lo   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; XID_Start # Lo       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; XID_Start # Lo   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C80          ; XID_Start # Lo       KANNADA SIGN SPACING CANDRABINDU
+0C85..0C8C    ; XID_Start # Lo   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; XID_Start # Lo   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; XID_Start # Lo  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; XID_Start # Lo  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; XID_Start # Lo   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBD          ; XID_Start # Lo       KANNADA SIGN AVAGRAHA
+0CDD..0CDE    ; XID_Start # Lo   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; XID_Start # Lo   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CF1..0CF2    ; XID_Start # Lo   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0D04..0D0C    ; XID_Start # Lo   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; XID_Start # Lo   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; XID_Start # Lo  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3D          ; XID_Start # Lo       MALAYALAM SIGN AVAGRAHA
+0D4E          ; XID_Start # Lo       MALAYALAM LETTER DOT REPH
+0D54..0D56    ; XID_Start # Lo   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D5F..0D61    ; XID_Start # Lo   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D7A..0D7F    ; XID_Start # Lo   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D85..0D96    ; XID_Start # Lo  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; XID_Start # Lo  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; XID_Start # Lo   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; XID_Start # Lo       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; XID_Start # Lo   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0E01..0E30    ; XID_Start # Lo  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E32          ; XID_Start # Lo       THAI CHARACTER SARA AA
+0E40..0E45    ; XID_Start # Lo   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E46          ; XID_Start # Lm       THAI CHARACTER MAIYAMOK
+0E81..0E82    ; XID_Start # Lo   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; XID_Start # Lo       LAO LETTER KHO TAM
+0E86..0E8A    ; XID_Start # Lo   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; XID_Start # Lo  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; XID_Start # Lo       LAO LETTER LO LOOT
+0EA7..0EB0    ; XID_Start # Lo  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB2          ; XID_Start # Lo       LAO VOWEL SIGN AA
+0EBD          ; XID_Start # Lo       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; XID_Start # Lo   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EC6          ; XID_Start # Lm       LAO KO LA
+0EDC..0EDF    ; XID_Start # Lo   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; XID_Start # Lo       TIBETAN SYLLABLE OM
+0F40..0F47    ; XID_Start # Lo   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; XID_Start # Lo  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F88..0F8C    ; XID_Start # Lo   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+1000..102A    ; XID_Start # Lo  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+103F          ; XID_Start # Lo       MYANMAR LETTER GREAT SA
+1050..1055    ; XID_Start # Lo   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+105A..105D    ; XID_Start # Lo   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+1061          ; XID_Start # Lo       MYANMAR LETTER SGAW KAREN SHA
+1065..1066    ; XID_Start # Lo   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+106E..1070    ; XID_Start # Lo   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1075..1081    ; XID_Start # Lo  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+108E          ; XID_Start # Lo       MYANMAR LETTER RUMAI PALAUNG FA
+10A0..10C5    ; XID_Start # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; XID_Start # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; XID_Start # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; XID_Start # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; XID_Start # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; XID_Start # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+1100..1248    ; XID_Start # Lo [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; XID_Start # Lo       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; XID_Start # Lo  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; XID_Start # Lo  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; XID_Start # Lo       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; XID_Start # Lo  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; XID_Start # Lo  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; XID_Start # Lo  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+1380..138F    ; XID_Start # Lo  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+13A0..13F5    ; XID_Start # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; XID_Start # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1401..166C    ; XID_Start # Lo [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166F..167F    ; XID_Start # Lo  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1681..169A    ; XID_Start # Lo  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+16A0..16EA    ; XID_Start # Lo  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16EE..16F0    ; XID_Start # Nl   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+16F1..16F8    ; XID_Start # Lo   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; XID_Start # Lo  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+171F..1731    ; XID_Start # Lo  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1740..1751    ; XID_Start # Lo  [18] BUHID LETTER A..BUHID LETTER HA
+1760..176C    ; XID_Start # Lo  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; XID_Start # Lo   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1780..17B3    ; XID_Start # Lo  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17D7          ; XID_Start # Lm       KHMER SIGN LEK TOO
+17DC          ; XID_Start # Lo       KHMER SIGN AVAKRAHASANYA
+1820..1842    ; XID_Start # Lo  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1843          ; XID_Start # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1844..1878    ; XID_Start # Lo  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; XID_Start # Lo   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1885..1886    ; XID_Start # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+1887..18A8    ; XID_Start # Lo  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18AA          ; XID_Start # Lo       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; XID_Start # Lo  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; XID_Start # Lo  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1950..196D    ; XID_Start # Lo  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; XID_Start # Lo   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; XID_Start # Lo  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; XID_Start # Lo  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+1A00..1A16    ; XID_Start # Lo  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A20..1A54    ; XID_Start # Lo  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1AA7          ; XID_Start # Lm       TAI THAM SIGN MAI YAMOK
+1B05..1B33    ; XID_Start # Lo  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B45..1B4C    ; XID_Start # Lo   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B83..1BA0    ; XID_Start # Lo  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BAE..1BAF    ; XID_Start # Lo   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BBA..1BE5    ; XID_Start # Lo  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1C00..1C23    ; XID_Start # Lo  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C4D..1C4F    ; XID_Start # Lo   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C5A..1C77    ; XID_Start # Lo  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1C78..1C7D    ; XID_Start # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1C80..1C88    ; XID_Start # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; XID_Start # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; XID_Start # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1CE9..1CEC    ; XID_Start # Lo   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CEE..1CF3    ; XID_Start # Lo   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF5..1CF6    ; XID_Start # Lo   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CFA          ; XID_Start # Lo       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+1D00..1D2B    ; XID_Start # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; XID_Start # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; XID_Start # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; XID_Start # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; XID_Start # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; XID_Start # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1E00..1F15    ; XID_Start # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; XID_Start # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; XID_Start # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; XID_Start # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; XID_Start # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; XID_Start # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; XID_Start # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; XID_Start # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; XID_Start # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; XID_Start # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; XID_Start # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; XID_Start # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; XID_Start # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; XID_Start # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; XID_Start # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; XID_Start # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; XID_Start # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; XID_Start # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; XID_Start # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+2071          ; XID_Start # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; XID_Start # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; XID_Start # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+2102          ; XID_Start # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; XID_Start # L&       EULER CONSTANT
+210A..2113    ; XID_Start # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; XID_Start # L&       DOUBLE-STRUCK CAPITAL N
+2118          ; XID_Start # Sm       SCRIPT CAPITAL P
+2119..211D    ; XID_Start # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; XID_Start # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; XID_Start # L&       OHM SIGN
+2128          ; XID_Start # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; XID_Start # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212E          ; XID_Start # So       ESTIMATED SYMBOL
+212F..2134    ; XID_Start # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2135..2138    ; XID_Start # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+2139          ; XID_Start # L&       INFORMATION SOURCE
+213C..213F    ; XID_Start # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2145..2149    ; XID_Start # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; XID_Start # L&       TURNED SMALL F
+2160..2182    ; XID_Start # Nl  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2183..2184    ; XID_Start # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+2185..2188    ; XID_Start # Nl   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+2C00..2C7B    ; XID_Start # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; XID_Start # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; XID_Start # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CEB..2CEE    ; XID_Start # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF2..2CF3    ; XID_Start # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; XID_Start # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; XID_Start # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; XID_Start # L&       GEORGIAN SMALL LETTER AEN
+2D30..2D67    ; XID_Start # Lo  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D6F          ; XID_Start # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D80..2D96    ; XID_Start # Lo  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+3005          ; XID_Start # Lm       IDEOGRAPHIC ITERATION MARK
+3006          ; XID_Start # Lo       IDEOGRAPHIC CLOSING MARK
+3007          ; XID_Start # Nl       IDEOGRAPHIC NUMBER ZERO
+3021..3029    ; XID_Start # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+3031..3035    ; XID_Start # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+3038..303A    ; XID_Start # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+303B          ; XID_Start # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+303C          ; XID_Start # Lo       MASU MARK
+3041..3096    ; XID_Start # Lo  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+309D..309E    ; XID_Start # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+309F          ; XID_Start # Lo       HIRAGANA DIGRAPH YORI
+30A1..30FA    ; XID_Start # Lo  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FC..30FE    ; XID_Start # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+30FF          ; XID_Start # Lo       KATAKANA DIGRAPH KOTO
+3105..312F    ; XID_Start # Lo  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; XID_Start # Lo  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+31A0..31BF    ; XID_Start # Lo  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31F0..31FF    ; XID_Start # Lo  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3400..4DBF    ; XID_Start # Lo [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4E00..A014    ; XID_Start # Lo [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A015          ; XID_Start # Lm       YI SYLLABLE WU
+A016..A48C    ; XID_Start # Lo [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A4D0..A4F7    ; XID_Start # Lo  [40] LISU LETTER BA..LISU LETTER OE
+A4F8..A4FD    ; XID_Start # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A500..A60B    ; XID_Start # Lo [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A60C          ; XID_Start # Lm       VAI SYLLABLE LENGTHENER
+A610..A61F    ; XID_Start # Lo  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A62A..A62B    ; XID_Start # Lo   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A640..A66D    ; XID_Start # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A66E          ; XID_Start # Lo       CYRILLIC LETTER MULTIOCULAR O
+A67F          ; XID_Start # Lm       CYRILLIC PAYEROK
+A680..A69B    ; XID_Start # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; XID_Start # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A6A0..A6E5    ; XID_Start # Lo  [70] BAMUM LETTER A..BAMUM LETTER KI
+A6E6..A6EF    ; XID_Start # Nl  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+A717..A71F    ; XID_Start # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A722..A76F    ; XID_Start # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; XID_Start # Lm       MODIFIER LETTER US
+A771..A787    ; XID_Start # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A788          ; XID_Start # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A78B..A78E    ; XID_Start # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A78F          ; XID_Start # Lo       LATIN LETTER SINOLOGICAL DOT
+A790..A7CA    ; XID_Start # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; XID_Start # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; XID_Start # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; XID_Start # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; XID_Start # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; XID_Start # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F7          ; XID_Start # Lo       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7F8..A7F9    ; XID_Start # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; XID_Start # L&       LATIN LETTER SMALL CAPITAL TURNED M
+A7FB..A801    ; XID_Start # Lo   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A803..A805    ; XID_Start # Lo   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A807..A80A    ; XID_Start # Lo   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80C..A822    ; XID_Start # Lo  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A840..A873    ; XID_Start # Lo  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A882..A8B3    ; XID_Start # Lo  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8F2..A8F7    ; XID_Start # Lo   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8FB          ; XID_Start # Lo       DEVANAGARI HEADSTROKE
+A8FD..A8FE    ; XID_Start # Lo   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A90A..A925    ; XID_Start # Lo  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A930..A946    ; XID_Start # Lo  [23] REJANG LETTER KA..REJANG LETTER A
+A960..A97C    ; XID_Start # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A984..A9B2    ; XID_Start # Lo  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9CF          ; XID_Start # Lm       JAVANESE PANGRANGKEP
+A9E0..A9E4    ; XID_Start # Lo   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E6          ; XID_Start # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+A9E7..A9EF    ; XID_Start # Lo   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9FA..A9FE    ; XID_Start # Lo   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; XID_Start # Lo  [41] CHAM LETTER A..CHAM LETTER HA
+AA40..AA42    ; XID_Start # Lo   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA44..AA4B    ; XID_Start # Lo   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA60..AA6F    ; XID_Start # Lo  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA70          ; XID_Start # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA71..AA76    ; XID_Start # Lo   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA7A          ; XID_Start # Lo       MYANMAR LETTER AITON RA
+AA7E..AAAF    ; XID_Start # Lo  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB1          ; XID_Start # Lo       TAI VIET VOWEL AA
+AAB5..AAB6    ; XID_Start # Lo   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB9..AABD    ; XID_Start # Lo   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AAC0          ; XID_Start # Lo       TAI VIET TONE MAI NUENG
+AAC2          ; XID_Start # Lo       TAI VIET TONE MAI SONG
+AADB..AADC    ; XID_Start # Lo   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AADD          ; XID_Start # Lm       TAI VIET SYMBOL SAM
+AAE0..AAEA    ; XID_Start # Lo  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAF2          ; XID_Start # Lo       MEETEI MAYEK ANJI
+AAF3..AAF4    ; XID_Start # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AB01..AB06    ; XID_Start # Lo   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; XID_Start # Lo   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; XID_Start # Lo   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+AB30..AB5A    ; XID_Start # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; XID_Start # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; XID_Start # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; XID_Start # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; XID_Start # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+ABC0..ABE2    ; XID_Start # Lo  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+AC00..D7A3    ; XID_Start # Lo [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; XID_Start # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; XID_Start # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; XID_Start # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; XID_Start # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB00..FB06    ; XID_Start # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; XID_Start # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FB1D          ; XID_Start # Lo       HEBREW LETTER YOD WITH HIRIQ
+FB1F..FB28    ; XID_Start # Lo  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB2A..FB36    ; XID_Start # Lo  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; XID_Start # Lo   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; XID_Start # Lo       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; XID_Start # Lo   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; XID_Start # Lo   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; XID_Start # Lo [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBD3..FC5D    ; XID_Start # Lo [139] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF MAKSURA WITH SUPERSCRIPT ALEF ISOLATED FORM
+FC64..FD3D    ; XID_Start # Lo [218] ARABIC LIGATURE YEH WITH HAMZA ABOVE WITH REH FINAL FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD50..FD8F    ; XID_Start # Lo  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; XID_Start # Lo  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDF0..FDF9    ; XID_Start # Lo  [10] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE SALLA ISOLATED FORM
+FE71          ; XID_Start # Lo       ARABIC TATWEEL WITH FATHATAN ABOVE
+FE73          ; XID_Start # Lo       ARABIC TAIL FRAGMENT
+FE77          ; XID_Start # Lo       ARABIC FATHA MEDIAL FORM
+FE79          ; XID_Start # Lo       ARABIC DAMMA MEDIAL FORM
+FE7B          ; XID_Start # Lo       ARABIC KASRA MEDIAL FORM
+FE7D          ; XID_Start # Lo       ARABIC SHADDA MEDIAL FORM
+FE7F..FEFC    ; XID_Start # Lo [126] ARABIC SUKUN MEDIAL FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF21..FF3A    ; XID_Start # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF41..FF5A    ; XID_Start # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+FF66..FF6F    ; XID_Start # Lo  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF70          ; XID_Start # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF71..FF9D    ; XID_Start # Lo  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FFA0..FFBE    ; XID_Start # Lo  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; XID_Start # Lo   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; XID_Start # Lo   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; XID_Start # Lo   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; XID_Start # Lo   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+10000..1000B  ; XID_Start # Lo  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; XID_Start # Lo  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; XID_Start # Lo  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; XID_Start # Lo   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; XID_Start # Lo  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; XID_Start # Lo  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; XID_Start # Lo [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10140..10174  ; XID_Start # Nl  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+10280..1029C  ; XID_Start # Lo  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; XID_Start # Lo  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+10300..1031F  ; XID_Start # Lo  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+1032D..10340  ; XID_Start # Lo  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10341         ; XID_Start # Nl       GOTHIC LETTER NINETY
+10342..10349  ; XID_Start # Lo   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+1034A         ; XID_Start # Nl       GOTHIC LETTER NINE HUNDRED
+10350..10375  ; XID_Start # Lo  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10380..1039D  ; XID_Start # Lo  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+103A0..103C3  ; XID_Start # Lo  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; XID_Start # Lo   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+103D1..103D5  ; XID_Start # Nl   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+10400..1044F  ; XID_Start # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+10450..1049D  ; XID_Start # Lo  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+104B0..104D3  ; XID_Start # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; XID_Start # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10500..10527  ; XID_Start # Lo  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; XID_Start # Lo  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+10570..1057A  ; XID_Start # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; XID_Start # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; XID_Start # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; XID_Start # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; XID_Start # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; XID_Start # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; XID_Start # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; XID_Start # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10600..10736  ; XID_Start # Lo [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; XID_Start # Lo  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; XID_Start # Lo   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10780..10785  ; XID_Start # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; XID_Start # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; XID_Start # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10800..10805  ; XID_Start # Lo   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; XID_Start # Lo       CYPRIOT SYLLABLE JO
+1080A..10835  ; XID_Start # Lo  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; XID_Start # Lo   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; XID_Start # Lo       CYPRIOT SYLLABLE ZA
+1083F..10855  ; XID_Start # Lo  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10860..10876  ; XID_Start # Lo  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10880..1089E  ; XID_Start # Lo  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108E0..108F2  ; XID_Start # Lo  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; XID_Start # Lo   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+10900..10915  ; XID_Start # Lo  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10920..10939  ; XID_Start # Lo  [26] LYDIAN LETTER A..LYDIAN LETTER C
+10980..109B7  ; XID_Start # Lo  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BE..109BF  ; XID_Start # Lo   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+10A00         ; XID_Start # Lo       KHAROSHTHI LETTER A
+10A10..10A13  ; XID_Start # Lo   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; XID_Start # Lo   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; XID_Start # Lo  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A60..10A7C  ; XID_Start # Lo  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A80..10A9C  ; XID_Start # Lo  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10AC0..10AC7  ; XID_Start # Lo   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC9..10AE4  ; XID_Start # Lo  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10B00..10B35  ; XID_Start # Lo  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B40..10B55  ; XID_Start # Lo  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B60..10B72  ; XID_Start # Lo  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B80..10B91  ; XID_Start # Lo  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10C00..10C48  ; XID_Start # Lo  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10C80..10CB2  ; XID_Start # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; XID_Start # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+10D00..10D23  ; XID_Start # Lo  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10E80..10EA9  ; XID_Start # Lo  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EB0..10EB1  ; XID_Start # Lo   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10F00..10F1C  ; XID_Start # Lo  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F27         ; XID_Start # Lo       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; XID_Start # Lo  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F70..10F81  ; XID_Start # Lo  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10FB0..10FC4  ; XID_Start # Lo  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FE0..10FF6  ; XID_Start # Lo  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11003..11037  ; XID_Start # Lo  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11071..11072  ; XID_Start # Lo   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11075         ; XID_Start # Lo       BRAHMI LETTER OLD TAMIL LLA
+11083..110AF  ; XID_Start # Lo  [45] KAITHI LETTER A..KAITHI LETTER HA
+110D0..110E8  ; XID_Start # Lo  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+11103..11126  ; XID_Start # Lo  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+11144         ; XID_Start # Lo       CHAKMA LETTER LHAA
+11147         ; XID_Start # Lo       CHAKMA LETTER VAA
+11150..11172  ; XID_Start # Lo  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11176         ; XID_Start # Lo       MAHAJANI LIGATURE SHRI
+11183..111B2  ; XID_Start # Lo  [48] SHARADA LETTER A..SHARADA LETTER HA
+111C1..111C4  ; XID_Start # Lo   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111DA         ; XID_Start # Lo       SHARADA EKAM
+111DC         ; XID_Start # Lo       SHARADA HEADSTROKE
+11200..11211  ; XID_Start # Lo  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; XID_Start # Lo  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1123F..11240  ; XID_Start # Lo   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11280..11286  ; XID_Start # Lo   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; XID_Start # Lo       MULTANI LETTER GHA
+1128A..1128D  ; XID_Start # Lo   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; XID_Start # Lo  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; XID_Start # Lo  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112B0..112DE  ; XID_Start # Lo  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+11305..1130C  ; XID_Start # Lo   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; XID_Start # Lo   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; XID_Start # Lo  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; XID_Start # Lo   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; XID_Start # Lo   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; XID_Start # Lo   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133D         ; XID_Start # Lo       GRANTHA SIGN AVAGRAHA
+11350         ; XID_Start # Lo       GRANTHA OM
+1135D..11361  ; XID_Start # Lo   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11400..11434  ; XID_Start # Lo  [53] NEWA LETTER A..NEWA LETTER HA
+11447..1144A  ; XID_Start # Lo   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+1145F..11461  ; XID_Start # Lo   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; XID_Start # Lo  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114C4..114C5  ; XID_Start # Lo   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C7         ; XID_Start # Lo       TIRHUTA OM
+11580..115AE  ; XID_Start # Lo  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115D8..115DB  ; XID_Start # Lo   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+11600..1162F  ; XID_Start # Lo  [48] MODI LETTER A..MODI LETTER LLA
+11644         ; XID_Start # Lo       MODI SIGN HUVA
+11680..116AA  ; XID_Start # Lo  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116B8         ; XID_Start # Lo       TAKRI LETTER ARCHAIC KHA
+11700..1171A  ; XID_Start # Lo  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+11740..11746  ; XID_Start # Lo   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; XID_Start # Lo  [44] DOGRA LETTER A..DOGRA LETTER RRA
+118A0..118DF  ; XID_Start # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+118FF..11906  ; XID_Start # Lo   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; XID_Start # Lo       DIVES AKURU LETTER O
+1190C..11913  ; XID_Start # Lo   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; XID_Start # Lo   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; XID_Start # Lo  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+1193F         ; XID_Start # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11941         ; XID_Start # Lo       DIVES AKURU INITIAL RA
+119A0..119A7  ; XID_Start # Lo   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; XID_Start # Lo  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119E1         ; XID_Start # Lo       NANDINAGARI SIGN AVAGRAHA
+119E3         ; XID_Start # Lo       NANDINAGARI HEADSTROKE
+11A00         ; XID_Start # Lo       ZANABAZAR SQUARE LETTER A
+11A0B..11A32  ; XID_Start # Lo  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A3A         ; XID_Start # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A50         ; XID_Start # Lo       SOYOMBO LETTER A
+11A5C..11A89  ; XID_Start # Lo  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A9D         ; XID_Start # Lo       SOYOMBO MARK PLUTA
+11AB0..11AF8  ; XID_Start # Lo  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11C00..11C08  ; XID_Start # Lo   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; XID_Start # Lo  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C40         ; XID_Start # Lo       BHAIKSUKI SIGN AVAGRAHA
+11C72..11C8F  ; XID_Start # Lo  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11D00..11D06  ; XID_Start # Lo   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; XID_Start # Lo   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; XID_Start # Lo  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D46         ; XID_Start # Lo       MASARAM GONDI REPHA
+11D60..11D65  ; XID_Start # Lo   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; XID_Start # Lo   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; XID_Start # Lo  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D98         ; XID_Start # Lo       GUNJALA GONDI OM
+11EE0..11EF2  ; XID_Start # Lo  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11F02         ; XID_Start # Lo       KAWI SIGN REPHA
+11F04..11F10  ; XID_Start # Lo  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; XID_Start # Lo  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11FB0         ; XID_Start # Lo       LISU LETTER YHA
+12000..12399  ; XID_Start # Lo [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12400..1246E  ; XID_Start # Nl [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+12480..12543  ; XID_Start # Lo [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; XID_Start # Lo  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+13000..1342F  ; XID_Start # Lo [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13441..13446  ; XID_Start # Lo   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+14400..14646  ; XID_Start # Lo [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; XID_Start # Lo [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; XID_Start # Lo  [31] MRO LETTER TA..MRO LETTER TEK
+16A70..16ABE  ; XID_Start # Lo  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AD0..16AED  ; XID_Start # Lo  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16B00..16B2F  ; XID_Start # Lo  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B40..16B43  ; XID_Start # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16B63..16B77  ; XID_Start # Lo  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; XID_Start # Lo  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16E40..16E7F  ; XID_Start # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+16F00..16F4A  ; XID_Start # Lo  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F50         ; XID_Start # Lo       MIAO LETTER NASALIZATION
+16F93..16F9F  ; XID_Start # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; XID_Start # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; XID_Start # Lm       OLD CHINESE ITERATION MARK
+17000..187F7  ; XID_Start # Lo [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; XID_Start # Lo [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; XID_Start # Lo   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1AFF0..1AFF3  ; XID_Start # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; XID_Start # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; XID_Start # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1B000..1B122  ; XID_Start # Lo [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; XID_Start # Lo       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; XID_Start # Lo   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; XID_Start # Lo       KATAKANA LETTER SMALL KO
+1B164..1B167  ; XID_Start # Lo   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; XID_Start # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; XID_Start # Lo [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; XID_Start # Lo  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; XID_Start # Lo   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; XID_Start # Lo  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1D400..1D454  ; XID_Start # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; XID_Start # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; XID_Start # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; XID_Start # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; XID_Start # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; XID_Start # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; XID_Start # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; XID_Start # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; XID_Start # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; XID_Start # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; XID_Start # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; XID_Start # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; XID_Start # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; XID_Start # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; XID_Start # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; XID_Start # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; XID_Start # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; XID_Start # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; XID_Start # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; XID_Start # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C2..1D6DA  ; XID_Start # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6FA  ; XID_Start # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FC..1D714  ; XID_Start # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D734  ; XID_Start # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D736..1D74E  ; XID_Start # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D76E  ; XID_Start # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D770..1D788  ; XID_Start # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D7A8  ; XID_Start # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7AA..1D7C2  ; XID_Start # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7CB  ; XID_Start # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1DF00..1DF09  ; XID_Start # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0A         ; XID_Start # Lo       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1DF0B..1DF1E  ; XID_Start # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; XID_Start # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E030..1E06D  ; XID_Start # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E100..1E12C  ; XID_Start # Lo  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E137..1E13D  ; XID_Start # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E14E         ; XID_Start # Lo       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E290..1E2AD  ; XID_Start # Lo  [30] TOTO LETTER PA..TOTO LETTER A
+1E2C0..1E2EB  ; XID_Start # Lo  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E4D0..1E4EA  ; XID_Start # Lo  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E4EB         ; XID_Start # Lm       NAG MUNDARI SIGN OJOD
+1E7E0..1E7E6  ; XID_Start # Lo   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; XID_Start # Lo   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; XID_Start # Lo   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; XID_Start # Lo  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; XID_Start # Lo [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1E900..1E943  ; XID_Start # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1E94B         ; XID_Start # Lm       ADLAM NASALIZATION MARK
+1EE00..1EE03  ; XID_Start # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; XID_Start # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; XID_Start # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; XID_Start # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; XID_Start # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; XID_Start # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; XID_Start # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; XID_Start # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; XID_Start # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; XID_Start # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; XID_Start # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; XID_Start # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; XID_Start # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; XID_Start # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; XID_Start # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; XID_Start # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; XID_Start # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; XID_Start # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; XID_Start # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; XID_Start # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; XID_Start # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; XID_Start # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; XID_Start # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; XID_Start # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+20000..2A6DF  ; XID_Start # Lo [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; XID_Start # Lo [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; XID_Start # Lo [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; XID_Start # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; XID_Start # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; XID_Start # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; XID_Start # Lo [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; XID_Start # Lo [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+
+# Total code points: 136322
+
+# ================================================
+
+# Derived Property: XID_Continue
+#  Mod_ID_Continue modified for closure under NFKx
+#  Modified as described in UAX #15
+#  NOTE: Does NOT remove the non-NFKx characters.
+#        Merely ensures that if isIdentifer(string) then isIdentifier(NFKx(string))
+#  NOTE: See UAX #31 for more information
+
+0030..0039    ; XID_Continue # Nd  [10] DIGIT ZERO..DIGIT NINE
+0041..005A    ; XID_Continue # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+005F          ; XID_Continue # Pc       LOW LINE
+0061..007A    ; XID_Continue # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00AA          ; XID_Continue # Lo       FEMININE ORDINAL INDICATOR
+00B5          ; XID_Continue # L&       MICRO SIGN
+00B7          ; XID_Continue # Po       MIDDLE DOT
+00BA          ; XID_Continue # Lo       MASCULINE ORDINAL INDICATOR
+00C0..00D6    ; XID_Continue # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00F6    ; XID_Continue # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..01BA    ; XID_Continue # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BB          ; XID_Continue # Lo       LATIN LETTER TWO WITH STROKE
+01BC..01BF    ; XID_Continue # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C0..01C3    ; XID_Continue # Lo   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+01C4..0293    ; XID_Continue # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0294          ; XID_Continue # Lo       LATIN LETTER GLOTTAL STOP
+0295..02AF    ; XID_Continue # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02C1    ; XID_Continue # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C6..02D1    ; XID_Continue # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02E0..02E4    ; XID_Continue # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02EC          ; XID_Continue # Lm       MODIFIER LETTER VOICING
+02EE          ; XID_Continue # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+0300..036F    ; XID_Continue # Mn [112] COMBINING GRAVE ACCENT..COMBINING LATIN SMALL LETTER X
+0370..0373    ; XID_Continue # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0374          ; XID_Continue # Lm       GREEK NUMERAL SIGN
+0376..0377    ; XID_Continue # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037B..037D    ; XID_Continue # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037F          ; XID_Continue # L&       GREEK CAPITAL LETTER YOT
+0386          ; XID_Continue # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0387          ; XID_Continue # Po       GREEK ANO TELEIA
+0388..038A    ; XID_Continue # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; XID_Continue # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; XID_Continue # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; XID_Continue # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F7..0481    ; XID_Continue # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+0483..0487    ; XID_Continue # Mn   [5] COMBINING CYRILLIC TITLO..COMBINING CYRILLIC POKRYTIE
+048A..052F    ; XID_Continue # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; XID_Continue # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0559          ; XID_Continue # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+0560..0588    ; XID_Continue # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+0591..05BD    ; XID_Continue # Mn  [45] HEBREW ACCENT ETNAHTA..HEBREW POINT METEG
+05BF          ; XID_Continue # Mn       HEBREW POINT RAFE
+05C1..05C2    ; XID_Continue # Mn   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; XID_Continue # Mn   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; XID_Continue # Mn       HEBREW POINT QAMATS QATAN
+05D0..05EA    ; XID_Continue # Lo  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; XID_Continue # Lo   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+0610..061A    ; XID_Continue # Mn  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+0620..063F    ; XID_Continue # Lo  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0640          ; XID_Continue # Lm       ARABIC TATWEEL
+0641..064A    ; XID_Continue # Lo  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+064B..065F    ; XID_Continue # Mn  [21] ARABIC FATHATAN..ARABIC WAVY HAMZA BELOW
+0660..0669    ; XID_Continue # Nd  [10] ARABIC-INDIC DIGIT ZERO..ARABIC-INDIC DIGIT NINE
+066E..066F    ; XID_Continue # Lo   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0670          ; XID_Continue # Mn       ARABIC LETTER SUPERSCRIPT ALEF
+0671..06D3    ; XID_Continue # Lo  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D5          ; XID_Continue # Lo       ARABIC LETTER AE
+06D6..06DC    ; XID_Continue # Mn   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06DF..06E4    ; XID_Continue # Mn   [6] ARABIC SMALL HIGH ROUNDED ZERO..ARABIC SMALL HIGH MADDA
+06E5..06E6    ; XID_Continue # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06E7..06E8    ; XID_Continue # Mn   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06EA..06ED    ; XID_Continue # Mn   [4] ARABIC EMPTY CENTRE LOW STOP..ARABIC SMALL LOW MEEM
+06EE..06EF    ; XID_Continue # Lo   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06F0..06F9    ; XID_Continue # Nd  [10] EXTENDED ARABIC-INDIC DIGIT ZERO..EXTENDED ARABIC-INDIC DIGIT NINE
+06FA..06FC    ; XID_Continue # Lo   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FF          ; XID_Continue # Lo       ARABIC LETTER HEH WITH INVERTED V
+0710          ; XID_Continue # Lo       SYRIAC LETTER ALAPH
+0711          ; XID_Continue # Mn       SYRIAC LETTER SUPERSCRIPT ALAPH
+0712..072F    ; XID_Continue # Lo  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+0730..074A    ; XID_Continue # Mn  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
+074D..07A5    ; XID_Continue # Lo  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07A6..07B0    ; XID_Continue # Mn  [11] THAANA ABAFILI..THAANA SUKUN
+07B1          ; XID_Continue # Lo       THAANA LETTER NAA
+07C0..07C9    ; XID_Continue # Nd  [10] NKO DIGIT ZERO..NKO DIGIT NINE
+07CA..07EA    ; XID_Continue # Lo  [33] NKO LETTER A..NKO LETTER JONA RA
+07EB..07F3    ; XID_Continue # Mn   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07F4..07F5    ; XID_Continue # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; XID_Continue # Lm       NKO LAJANYALAN
+07FD          ; XID_Continue # Mn       NKO DANTAYALAN
+0800..0815    ; XID_Continue # Lo  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+0816..0819    ; XID_Continue # Mn   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
+081A          ; XID_Continue # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+081B..0823    ; XID_Continue # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0824          ; XID_Continue # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0825..0827    ; XID_Continue # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0828          ; XID_Continue # Lm       SAMARITAN MODIFIER LETTER I
+0829..082D    ; XID_Continue # Mn   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
+0840..0858    ; XID_Continue # Lo  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+0859..085B    ; XID_Continue # Mn   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
+0860..086A    ; XID_Continue # Lo  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; XID_Continue # Lo  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0889..088E    ; XID_Continue # Lo   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+0898..089F    ; XID_Continue # Mn   [8] ARABIC SMALL HIGH WORD AL-JUZ..ARABIC HALF MADDA OVER MADDA
+08A0..08C8    ; XID_Continue # Lo  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+08C9          ; XID_Continue # Lm       ARABIC SMALL FARSI YEH
+08CA..08E1    ; XID_Continue # Mn  [24] ARABIC SMALL HIGH FARSI YEH..ARABIC SMALL HIGH SIGN SAFHA
+08E3..0902    ; XID_Continue # Mn  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
+0903          ; XID_Continue # Mc       DEVANAGARI SIGN VISARGA
+0904..0939    ; XID_Continue # Lo  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093A          ; XID_Continue # Mn       DEVANAGARI VOWEL SIGN OE
+093B          ; XID_Continue # Mc       DEVANAGARI VOWEL SIGN OOE
+093C          ; XID_Continue # Mn       DEVANAGARI SIGN NUKTA
+093D          ; XID_Continue # Lo       DEVANAGARI SIGN AVAGRAHA
+093E..0940    ; XID_Continue # Mc   [3] DEVANAGARI VOWEL SIGN AA..DEVANAGARI VOWEL SIGN II
+0941..0948    ; XID_Continue # Mn   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+0949..094C    ; XID_Continue # Mc   [4] DEVANAGARI VOWEL SIGN CANDRA O..DEVANAGARI VOWEL SIGN AU
+094D          ; XID_Continue # Mn       DEVANAGARI SIGN VIRAMA
+094E..094F    ; XID_Continue # Mc   [2] DEVANAGARI VOWEL SIGN PRISHTHAMATRA E..DEVANAGARI VOWEL SIGN AW
+0950          ; XID_Continue # Lo       DEVANAGARI OM
+0951..0957    ; XID_Continue # Mn   [7] DEVANAGARI STRESS SIGN UDATTA..DEVANAGARI VOWEL SIGN UUE
+0958..0961    ; XID_Continue # Lo  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0962..0963    ; XID_Continue # Mn   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0966..096F    ; XID_Continue # Nd  [10] DEVANAGARI DIGIT ZERO..DEVANAGARI DIGIT NINE
+0971          ; XID_Continue # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0972..0980    ; XID_Continue # Lo  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0981          ; XID_Continue # Mn       BENGALI SIGN CANDRABINDU
+0982..0983    ; XID_Continue # Mc   [2] BENGALI SIGN ANUSVARA..BENGALI SIGN VISARGA
+0985..098C    ; XID_Continue # Lo   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; XID_Continue # Lo   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; XID_Continue # Lo  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; XID_Continue # Lo   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; XID_Continue # Lo       BENGALI LETTER LA
+09B6..09B9    ; XID_Continue # Lo   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BC          ; XID_Continue # Mn       BENGALI SIGN NUKTA
+09BD          ; XID_Continue # Lo       BENGALI SIGN AVAGRAHA
+09BE..09C0    ; XID_Continue # Mc   [3] BENGALI VOWEL SIGN AA..BENGALI VOWEL SIGN II
+09C1..09C4    ; XID_Continue # Mn   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09C7..09C8    ; XID_Continue # Mc   [2] BENGALI VOWEL SIGN E..BENGALI VOWEL SIGN AI
+09CB..09CC    ; XID_Continue # Mc   [2] BENGALI VOWEL SIGN O..BENGALI VOWEL SIGN AU
+09CD          ; XID_Continue # Mn       BENGALI SIGN VIRAMA
+09CE          ; XID_Continue # Lo       BENGALI LETTER KHANDA TA
+09D7          ; XID_Continue # Mc       BENGALI AU LENGTH MARK
+09DC..09DD    ; XID_Continue # Lo   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; XID_Continue # Lo   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09E2..09E3    ; XID_Continue # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09E6..09EF    ; XID_Continue # Nd  [10] BENGALI DIGIT ZERO..BENGALI DIGIT NINE
+09F0..09F1    ; XID_Continue # Lo   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09FC          ; XID_Continue # Lo       BENGALI LETTER VEDIC ANUSVARA
+09FE          ; XID_Continue # Mn       BENGALI SANDHI MARK
+0A01..0A02    ; XID_Continue # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A03          ; XID_Continue # Mc       GURMUKHI SIGN VISARGA
+0A05..0A0A    ; XID_Continue # Lo   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; XID_Continue # Lo   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; XID_Continue # Lo  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; XID_Continue # Lo   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; XID_Continue # Lo   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; XID_Continue # Lo   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; XID_Continue # Lo   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A3C          ; XID_Continue # Mn       GURMUKHI SIGN NUKTA
+0A3E..0A40    ; XID_Continue # Mc   [3] GURMUKHI VOWEL SIGN AA..GURMUKHI VOWEL SIGN II
+0A41..0A42    ; XID_Continue # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; XID_Continue # Mn   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4D    ; XID_Continue # Mn   [3] GURMUKHI VOWEL SIGN OO..GURMUKHI SIGN VIRAMA
+0A51          ; XID_Continue # Mn       GURMUKHI SIGN UDAAT
+0A59..0A5C    ; XID_Continue # Lo   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; XID_Continue # Lo       GURMUKHI LETTER FA
+0A66..0A6F    ; XID_Continue # Nd  [10] GURMUKHI DIGIT ZERO..GURMUKHI DIGIT NINE
+0A70..0A71    ; XID_Continue # Mn   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A72..0A74    ; XID_Continue # Lo   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A75          ; XID_Continue # Mn       GURMUKHI SIGN YAKASH
+0A81..0A82    ; XID_Continue # Mn   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0A83          ; XID_Continue # Mc       GUJARATI SIGN VISARGA
+0A85..0A8D    ; XID_Continue # Lo   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; XID_Continue # Lo   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; XID_Continue # Lo  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; XID_Continue # Lo   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; XID_Continue # Lo   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; XID_Continue # Lo   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABC          ; XID_Continue # Mn       GUJARATI SIGN NUKTA
+0ABD          ; XID_Continue # Lo       GUJARATI SIGN AVAGRAHA
+0ABE..0AC0    ; XID_Continue # Mc   [3] GUJARATI VOWEL SIGN AA..GUJARATI VOWEL SIGN II
+0AC1..0AC5    ; XID_Continue # Mn   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; XID_Continue # Mn   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0AC9          ; XID_Continue # Mc       GUJARATI VOWEL SIGN CANDRA O
+0ACB..0ACC    ; XID_Continue # Mc   [2] GUJARATI VOWEL SIGN O..GUJARATI VOWEL SIGN AU
+0ACD          ; XID_Continue # Mn       GUJARATI SIGN VIRAMA
+0AD0          ; XID_Continue # Lo       GUJARATI OM
+0AE0..0AE1    ; XID_Continue # Lo   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AE2..0AE3    ; XID_Continue # Mn   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AE6..0AEF    ; XID_Continue # Nd  [10] GUJARATI DIGIT ZERO..GUJARATI DIGIT NINE
+0AF9          ; XID_Continue # Lo       GUJARATI LETTER ZHA
+0AFA..0AFF    ; XID_Continue # Mn   [6] GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE NUKTA ABOVE
+0B01          ; XID_Continue # Mn       ORIYA SIGN CANDRABINDU
+0B02..0B03    ; XID_Continue # Mc   [2] ORIYA SIGN ANUSVARA..ORIYA SIGN VISARGA
+0B05..0B0C    ; XID_Continue # Lo   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; XID_Continue # Lo   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; XID_Continue # Lo  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; XID_Continue # Lo   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; XID_Continue # Lo   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; XID_Continue # Lo   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3C          ; XID_Continue # Mn       ORIYA SIGN NUKTA
+0B3D          ; XID_Continue # Lo       ORIYA SIGN AVAGRAHA
+0B3E          ; XID_Continue # Mc       ORIYA VOWEL SIGN AA
+0B3F          ; XID_Continue # Mn       ORIYA VOWEL SIGN I
+0B40          ; XID_Continue # Mc       ORIYA VOWEL SIGN II
+0B41..0B44    ; XID_Continue # Mn   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B47..0B48    ; XID_Continue # Mc   [2] ORIYA VOWEL SIGN E..ORIYA VOWEL SIGN AI
+0B4B..0B4C    ; XID_Continue # Mc   [2] ORIYA VOWEL SIGN O..ORIYA VOWEL SIGN AU
+0B4D          ; XID_Continue # Mn       ORIYA SIGN VIRAMA
+0B55..0B56    ; XID_Continue # Mn   [2] ORIYA SIGN OVERLINE..ORIYA AI LENGTH MARK
+0B57          ; XID_Continue # Mc       ORIYA AU LENGTH MARK
+0B5C..0B5D    ; XID_Continue # Lo   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; XID_Continue # Lo   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B62..0B63    ; XID_Continue # Mn   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B66..0B6F    ; XID_Continue # Nd  [10] ORIYA DIGIT ZERO..ORIYA DIGIT NINE
+0B71          ; XID_Continue # Lo       ORIYA LETTER WA
+0B82          ; XID_Continue # Mn       TAMIL SIGN ANUSVARA
+0B83          ; XID_Continue # Lo       TAMIL SIGN VISARGA
+0B85..0B8A    ; XID_Continue # Lo   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; XID_Continue # Lo   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; XID_Continue # Lo   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; XID_Continue # Lo   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; XID_Continue # Lo       TAMIL LETTER JA
+0B9E..0B9F    ; XID_Continue # Lo   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; XID_Continue # Lo   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; XID_Continue # Lo   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; XID_Continue # Lo  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BBE..0BBF    ; XID_Continue # Mc   [2] TAMIL VOWEL SIGN AA..TAMIL VOWEL SIGN I
+0BC0          ; XID_Continue # Mn       TAMIL VOWEL SIGN II
+0BC1..0BC2    ; XID_Continue # Mc   [2] TAMIL VOWEL SIGN U..TAMIL VOWEL SIGN UU
+0BC6..0BC8    ; XID_Continue # Mc   [3] TAMIL VOWEL SIGN E..TAMIL VOWEL SIGN AI
+0BCA..0BCC    ; XID_Continue # Mc   [3] TAMIL VOWEL SIGN O..TAMIL VOWEL SIGN AU
+0BCD          ; XID_Continue # Mn       TAMIL SIGN VIRAMA
+0BD0          ; XID_Continue # Lo       TAMIL OM
+0BD7          ; XID_Continue # Mc       TAMIL AU LENGTH MARK
+0BE6..0BEF    ; XID_Continue # Nd  [10] TAMIL DIGIT ZERO..TAMIL DIGIT NINE
+0C00          ; XID_Continue # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C01..0C03    ; XID_Continue # Mc   [3] TELUGU SIGN CANDRABINDU..TELUGU SIGN VISARGA
+0C04          ; XID_Continue # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C05..0C0C    ; XID_Continue # Lo   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; XID_Continue # Lo   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; XID_Continue # Lo  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; XID_Continue # Lo  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3C          ; XID_Continue # Mn       TELUGU SIGN NUKTA
+0C3D          ; XID_Continue # Lo       TELUGU SIGN AVAGRAHA
+0C3E..0C40    ; XID_Continue # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C41..0C44    ; XID_Continue # Mc   [4] TELUGU VOWEL SIGN U..TELUGU VOWEL SIGN VOCALIC RR
+0C46..0C48    ; XID_Continue # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4D    ; XID_Continue # Mn   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
+0C55..0C56    ; XID_Continue # Mn   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C58..0C5A    ; XID_Continue # Lo   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; XID_Continue # Lo       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; XID_Continue # Lo   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C62..0C63    ; XID_Continue # Mn   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C66..0C6F    ; XID_Continue # Nd  [10] TELUGU DIGIT ZERO..TELUGU DIGIT NINE
+0C80          ; XID_Continue # Lo       KANNADA SIGN SPACING CANDRABINDU
+0C81          ; XID_Continue # Mn       KANNADA SIGN CANDRABINDU
+0C82..0C83    ; XID_Continue # Mc   [2] KANNADA SIGN ANUSVARA..KANNADA SIGN VISARGA
+0C85..0C8C    ; XID_Continue # Lo   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; XID_Continue # Lo   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; XID_Continue # Lo  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; XID_Continue # Lo  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; XID_Continue # Lo   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBC          ; XID_Continue # Mn       KANNADA SIGN NUKTA
+0CBD          ; XID_Continue # Lo       KANNADA SIGN AVAGRAHA
+0CBE          ; XID_Continue # Mc       KANNADA VOWEL SIGN AA
+0CBF          ; XID_Continue # Mn       KANNADA VOWEL SIGN I
+0CC0..0CC4    ; XID_Continue # Mc   [5] KANNADA VOWEL SIGN II..KANNADA VOWEL SIGN VOCALIC RR
+0CC6          ; XID_Continue # Mn       KANNADA VOWEL SIGN E
+0CC7..0CC8    ; XID_Continue # Mc   [2] KANNADA VOWEL SIGN EE..KANNADA VOWEL SIGN AI
+0CCA..0CCB    ; XID_Continue # Mc   [2] KANNADA VOWEL SIGN O..KANNADA VOWEL SIGN OO
+0CCC..0CCD    ; XID_Continue # Mn   [2] KANNADA VOWEL SIGN AU..KANNADA SIGN VIRAMA
+0CD5..0CD6    ; XID_Continue # Mc   [2] KANNADA LENGTH MARK..KANNADA AI LENGTH MARK
+0CDD..0CDE    ; XID_Continue # Lo   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; XID_Continue # Lo   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CE2..0CE3    ; XID_Continue # Mn   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0CE6..0CEF    ; XID_Continue # Nd  [10] KANNADA DIGIT ZERO..KANNADA DIGIT NINE
+0CF1..0CF2    ; XID_Continue # Lo   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0CF3          ; XID_Continue # Mc       KANNADA SIGN COMBINING ANUSVARA ABOVE RIGHT
+0D00..0D01    ; XID_Continue # Mn   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D02..0D03    ; XID_Continue # Mc   [2] MALAYALAM SIGN ANUSVARA..MALAYALAM SIGN VISARGA
+0D04..0D0C    ; XID_Continue # Lo   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; XID_Continue # Lo   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; XID_Continue # Lo  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3B..0D3C    ; XID_Continue # Mn   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D3D          ; XID_Continue # Lo       MALAYALAM SIGN AVAGRAHA
+0D3E..0D40    ; XID_Continue # Mc   [3] MALAYALAM VOWEL SIGN AA..MALAYALAM VOWEL SIGN II
+0D41..0D44    ; XID_Continue # Mn   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D46..0D48    ; XID_Continue # Mc   [3] MALAYALAM VOWEL SIGN E..MALAYALAM VOWEL SIGN AI
+0D4A..0D4C    ; XID_Continue # Mc   [3] MALAYALAM VOWEL SIGN O..MALAYALAM VOWEL SIGN AU
+0D4D          ; XID_Continue # Mn       MALAYALAM SIGN VIRAMA
+0D4E          ; XID_Continue # Lo       MALAYALAM LETTER DOT REPH
+0D54..0D56    ; XID_Continue # Lo   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D57          ; XID_Continue # Mc       MALAYALAM AU LENGTH MARK
+0D5F..0D61    ; XID_Continue # Lo   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D62..0D63    ; XID_Continue # Mn   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D66..0D6F    ; XID_Continue # Nd  [10] MALAYALAM DIGIT ZERO..MALAYALAM DIGIT NINE
+0D7A..0D7F    ; XID_Continue # Lo   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D81          ; XID_Continue # Mn       SINHALA SIGN CANDRABINDU
+0D82..0D83    ; XID_Continue # Mc   [2] SINHALA SIGN ANUSVARAYA..SINHALA SIGN VISARGAYA
+0D85..0D96    ; XID_Continue # Lo  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; XID_Continue # Lo  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; XID_Continue # Lo   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; XID_Continue # Lo       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; XID_Continue # Lo   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0DCA          ; XID_Continue # Mn       SINHALA SIGN AL-LAKUNA
+0DCF..0DD1    ; XID_Continue # Mc   [3] SINHALA VOWEL SIGN AELA-PILLA..SINHALA VOWEL SIGN DIGA AEDA-PILLA
+0DD2..0DD4    ; XID_Continue # Mn   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; XID_Continue # Mn       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0DD8..0DDF    ; XID_Continue # Mc   [8] SINHALA VOWEL SIGN GAETTA-PILLA..SINHALA VOWEL SIGN GAYANUKITTA
+0DE6..0DEF    ; XID_Continue # Nd  [10] SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT NINE
+0DF2..0DF3    ; XID_Continue # Mc   [2] SINHALA VOWEL SIGN DIGA GAETTA-PILLA..SINHALA VOWEL SIGN DIGA GAYANUKITTA
+0E01..0E30    ; XID_Continue # Lo  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E31          ; XID_Continue # Mn       THAI CHARACTER MAI HAN-AKAT
+0E32..0E33    ; XID_Continue # Lo   [2] THAI CHARACTER SARA AA..THAI CHARACTER SARA AM
+0E34..0E3A    ; XID_Continue # Mn   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E40..0E45    ; XID_Continue # Lo   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E46          ; XID_Continue # Lm       THAI CHARACTER MAIYAMOK
+0E47..0E4E    ; XID_Continue # Mn   [8] THAI CHARACTER MAITAIKHU..THAI CHARACTER YAMAKKAN
+0E50..0E59    ; XID_Continue # Nd  [10] THAI DIGIT ZERO..THAI DIGIT NINE
+0E81..0E82    ; XID_Continue # Lo   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; XID_Continue # Lo       LAO LETTER KHO TAM
+0E86..0E8A    ; XID_Continue # Lo   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; XID_Continue # Lo  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; XID_Continue # Lo       LAO LETTER LO LOOT
+0EA7..0EB0    ; XID_Continue # Lo  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB1          ; XID_Continue # Mn       LAO VOWEL SIGN MAI KAN
+0EB2..0EB3    ; XID_Continue # Lo   [2] LAO VOWEL SIGN AA..LAO VOWEL SIGN AM
+0EB4..0EBC    ; XID_Continue # Mn   [9] LAO VOWEL SIGN I..LAO SEMIVOWEL SIGN LO
+0EBD          ; XID_Continue # Lo       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; XID_Continue # Lo   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EC6          ; XID_Continue # Lm       LAO KO LA
+0EC8..0ECE    ; XID_Continue # Mn   [7] LAO TONE MAI EK..LAO YAMAKKAN
+0ED0..0ED9    ; XID_Continue # Nd  [10] LAO DIGIT ZERO..LAO DIGIT NINE
+0EDC..0EDF    ; XID_Continue # Lo   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; XID_Continue # Lo       TIBETAN SYLLABLE OM
+0F18..0F19    ; XID_Continue # Mn   [2] TIBETAN ASTROLOGICAL SIGN -KHYUD PA..TIBETAN ASTROLOGICAL SIGN SDONG TSHUGS
+0F20..0F29    ; XID_Continue # Nd  [10] TIBETAN DIGIT ZERO..TIBETAN DIGIT NINE
+0F35          ; XID_Continue # Mn       TIBETAN MARK NGAS BZUNG NYI ZLA
+0F37          ; XID_Continue # Mn       TIBETAN MARK NGAS BZUNG SGOR RTAGS
+0F39          ; XID_Continue # Mn       TIBETAN MARK TSA -PHRU
+0F3E..0F3F    ; XID_Continue # Mc   [2] TIBETAN SIGN YAR TSHES..TIBETAN SIGN MAR TSHES
+0F40..0F47    ; XID_Continue # Lo   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; XID_Continue # Lo  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F71..0F7E    ; XID_Continue # Mn  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F7F          ; XID_Continue # Mc       TIBETAN SIGN RNAM BCAD
+0F80..0F84    ; XID_Continue # Mn   [5] TIBETAN VOWEL SIGN REVERSED I..TIBETAN MARK HALANTA
+0F86..0F87    ; XID_Continue # Mn   [2] TIBETAN SIGN LCI RTAGS..TIBETAN SIGN YANG RTAGS
+0F88..0F8C    ; XID_Continue # Lo   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+0F8D..0F97    ; XID_Continue # Mn  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; XID_Continue # Mn  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+0FC6          ; XID_Continue # Mn       TIBETAN SYMBOL PADMA GDAN
+1000..102A    ; XID_Continue # Lo  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+102B..102C    ; XID_Continue # Mc   [2] MYANMAR VOWEL SIGN TALL AA..MYANMAR VOWEL SIGN AA
+102D..1030    ; XID_Continue # Mn   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1031          ; XID_Continue # Mc       MYANMAR VOWEL SIGN E
+1032..1037    ; XID_Continue # Mn   [6] MYANMAR VOWEL SIGN AI..MYANMAR SIGN DOT BELOW
+1038          ; XID_Continue # Mc       MYANMAR SIGN VISARGA
+1039..103A    ; XID_Continue # Mn   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+103B..103C    ; XID_Continue # Mc   [2] MYANMAR CONSONANT SIGN MEDIAL YA..MYANMAR CONSONANT SIGN MEDIAL RA
+103D..103E    ; XID_Continue # Mn   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+103F          ; XID_Continue # Lo       MYANMAR LETTER GREAT SA
+1040..1049    ; XID_Continue # Nd  [10] MYANMAR DIGIT ZERO..MYANMAR DIGIT NINE
+1050..1055    ; XID_Continue # Lo   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+1056..1057    ; XID_Continue # Mc   [2] MYANMAR VOWEL SIGN VOCALIC R..MYANMAR VOWEL SIGN VOCALIC RR
+1058..1059    ; XID_Continue # Mn   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105A..105D    ; XID_Continue # Lo   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+105E..1060    ; XID_Continue # Mn   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1061          ; XID_Continue # Lo       MYANMAR LETTER SGAW KAREN SHA
+1062..1064    ; XID_Continue # Mc   [3] MYANMAR VOWEL SIGN SGAW KAREN EU..MYANMAR TONE MARK SGAW KAREN KE PHO
+1065..1066    ; XID_Continue # Lo   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+1067..106D    ; XID_Continue # Mc   [7] MYANMAR VOWEL SIGN WESTERN PWO KAREN EU..MYANMAR SIGN WESTERN PWO KAREN TONE-5
+106E..1070    ; XID_Continue # Lo   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1071..1074    ; XID_Continue # Mn   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1075..1081    ; XID_Continue # Lo  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+1082          ; XID_Continue # Mn       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1083..1084    ; XID_Continue # Mc   [2] MYANMAR VOWEL SIGN SHAN AA..MYANMAR VOWEL SIGN SHAN E
+1085..1086    ; XID_Continue # Mn   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+1087..108C    ; XID_Continue # Mc   [6] MYANMAR SIGN SHAN TONE-2..MYANMAR SIGN SHAN COUNCIL TONE-3
+108D          ; XID_Continue # Mn       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+108E          ; XID_Continue # Lo       MYANMAR LETTER RUMAI PALAUNG FA
+108F          ; XID_Continue # Mc       MYANMAR SIGN RUMAI PALAUNG TONE-5
+1090..1099    ; XID_Continue # Nd  [10] MYANMAR SHAN DIGIT ZERO..MYANMAR SHAN DIGIT NINE
+109A..109C    ; XID_Continue # Mc   [3] MYANMAR SIGN KHAMTI TONE-1..MYANMAR VOWEL SIGN AITON A
+109D          ; XID_Continue # Mn       MYANMAR VOWEL SIGN AITON AI
+10A0..10C5    ; XID_Continue # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; XID_Continue # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; XID_Continue # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; XID_Continue # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FC          ; XID_Continue # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; XID_Continue # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+1100..1248    ; XID_Continue # Lo [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; XID_Continue # Lo       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; XID_Continue # Lo  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; XID_Continue # Lo  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; XID_Continue # Lo       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; XID_Continue # Lo  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; XID_Continue # Lo  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; XID_Continue # Lo  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+135D..135F    ; XID_Continue # Mn   [3] ETHIOPIC COMBINING GEMINATION AND VOWEL LENGTH MARK..ETHIOPIC COMBINING GEMINATION MARK
+1369..1371    ; XID_Continue # No   [9] ETHIOPIC DIGIT ONE..ETHIOPIC DIGIT NINE
+1380..138F    ; XID_Continue # Lo  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+13A0..13F5    ; XID_Continue # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; XID_Continue # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1401..166C    ; XID_Continue # Lo [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166F..167F    ; XID_Continue # Lo  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1681..169A    ; XID_Continue # Lo  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+16A0..16EA    ; XID_Continue # Lo  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16EE..16F0    ; XID_Continue # Nl   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+16F1..16F8    ; XID_Continue # Lo   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; XID_Continue # Lo  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+1712..1714    ; XID_Continue # Mn   [3] TAGALOG VOWEL SIGN I..TAGALOG SIGN VIRAMA
+1715          ; XID_Continue # Mc       TAGALOG SIGN PAMUDPOD
+171F..1731    ; XID_Continue # Lo  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1732..1733    ; XID_Continue # Mn   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1734          ; XID_Continue # Mc       HANUNOO SIGN PAMUDPOD
+1740..1751    ; XID_Continue # Lo  [18] BUHID LETTER A..BUHID LETTER HA
+1752..1753    ; XID_Continue # Mn   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1760..176C    ; XID_Continue # Lo  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; XID_Continue # Lo   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1772..1773    ; XID_Continue # Mn   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+1780..17B3    ; XID_Continue # Lo  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17B4..17B5    ; XID_Continue # Mn   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+17B6          ; XID_Continue # Mc       KHMER VOWEL SIGN AA
+17B7..17BD    ; XID_Continue # Mn   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17BE..17C5    ; XID_Continue # Mc   [8] KHMER VOWEL SIGN OE..KHMER VOWEL SIGN AU
+17C6          ; XID_Continue # Mn       KHMER SIGN NIKAHIT
+17C7..17C8    ; XID_Continue # Mc   [2] KHMER SIGN REAHMUK..KHMER SIGN YUUKALEAPINTU
+17C9..17D3    ; XID_Continue # Mn  [11] KHMER SIGN MUUSIKATOAN..KHMER SIGN BATHAMASAT
+17D7          ; XID_Continue # Lm       KHMER SIGN LEK TOO
+17DC          ; XID_Continue # Lo       KHMER SIGN AVAKRAHASANYA
+17DD          ; XID_Continue # Mn       KHMER SIGN ATTHACAN
+17E0..17E9    ; XID_Continue # Nd  [10] KHMER DIGIT ZERO..KHMER DIGIT NINE
+180B..180D    ; XID_Continue # Mn   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180F          ; XID_Continue # Mn       MONGOLIAN FREE VARIATION SELECTOR FOUR
+1810..1819    ; XID_Continue # Nd  [10] MONGOLIAN DIGIT ZERO..MONGOLIAN DIGIT NINE
+1820..1842    ; XID_Continue # Lo  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1843          ; XID_Continue # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1844..1878    ; XID_Continue # Lo  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; XID_Continue # Lo   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1885..1886    ; XID_Continue # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+1887..18A8    ; XID_Continue # Lo  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18A9          ; XID_Continue # Mn       MONGOLIAN LETTER ALI GALI DAGALGA
+18AA          ; XID_Continue # Lo       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; XID_Continue # Lo  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; XID_Continue # Lo  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1920..1922    ; XID_Continue # Mn   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1923..1926    ; XID_Continue # Mc   [4] LIMBU VOWEL SIGN EE..LIMBU VOWEL SIGN AU
+1927..1928    ; XID_Continue # Mn   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1929..192B    ; XID_Continue # Mc   [3] LIMBU SUBJOINED LETTER YA..LIMBU SUBJOINED LETTER WA
+1930..1931    ; XID_Continue # Mc   [2] LIMBU SMALL LETTER KA..LIMBU SMALL LETTER NGA
+1932          ; XID_Continue # Mn       LIMBU SMALL LETTER ANUSVARA
+1933..1938    ; XID_Continue # Mc   [6] LIMBU SMALL LETTER TA..LIMBU SMALL LETTER LA
+1939..193B    ; XID_Continue # Mn   [3] LIMBU SIGN MUKPHRENG..LIMBU SIGN SA-I
+1946..194F    ; XID_Continue # Nd  [10] LIMBU DIGIT ZERO..LIMBU DIGIT NINE
+1950..196D    ; XID_Continue # Lo  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; XID_Continue # Lo   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; XID_Continue # Lo  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; XID_Continue # Lo  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+19D0..19D9    ; XID_Continue # Nd  [10] NEW TAI LUE DIGIT ZERO..NEW TAI LUE DIGIT NINE
+19DA          ; XID_Continue # No       NEW TAI LUE THAM DIGIT ONE
+1A00..1A16    ; XID_Continue # Lo  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A17..1A18    ; XID_Continue # Mn   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A19..1A1A    ; XID_Continue # Mc   [2] BUGINESE VOWEL SIGN E..BUGINESE VOWEL SIGN O
+1A1B          ; XID_Continue # Mn       BUGINESE VOWEL SIGN AE
+1A20..1A54    ; XID_Continue # Lo  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1A55          ; XID_Continue # Mc       TAI THAM CONSONANT SIGN MEDIAL RA
+1A56          ; XID_Continue # Mn       TAI THAM CONSONANT SIGN MEDIAL LA
+1A57          ; XID_Continue # Mc       TAI THAM CONSONANT SIGN LA TANG LAI
+1A58..1A5E    ; XID_Continue # Mn   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A60          ; XID_Continue # Mn       TAI THAM SIGN SAKOT
+1A61          ; XID_Continue # Mc       TAI THAM VOWEL SIGN A
+1A62          ; XID_Continue # Mn       TAI THAM VOWEL SIGN MAI SAT
+1A63..1A64    ; XID_Continue # Mc   [2] TAI THAM VOWEL SIGN AA..TAI THAM VOWEL SIGN TALL AA
+1A65..1A6C    ; XID_Continue # Mn   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A6D..1A72    ; XID_Continue # Mc   [6] TAI THAM VOWEL SIGN OY..TAI THAM VOWEL SIGN THAM AI
+1A73..1A7C    ; XID_Continue # Mn  [10] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN KHUEN-LUE KARAN
+1A7F          ; XID_Continue # Mn       TAI THAM COMBINING CRYPTOGRAMMIC DOT
+1A80..1A89    ; XID_Continue # Nd  [10] TAI THAM HORA DIGIT ZERO..TAI THAM HORA DIGIT NINE
+1A90..1A99    ; XID_Continue # Nd  [10] TAI THAM THAM DIGIT ZERO..TAI THAM THAM DIGIT NINE
+1AA7          ; XID_Continue # Lm       TAI THAM SIGN MAI YAMOK
+1AB0..1ABD    ; XID_Continue # Mn  [14] COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBINING PARENTHESES BELOW
+1ABF..1ACE    ; XID_Continue # Mn  [16] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; XID_Continue # Mn   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B04          ; XID_Continue # Mc       BALINESE SIGN BISAH
+1B05..1B33    ; XID_Continue # Lo  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B34          ; XID_Continue # Mn       BALINESE SIGN REREKAN
+1B35          ; XID_Continue # Mc       BALINESE VOWEL SIGN TEDUNG
+1B36..1B3A    ; XID_Continue # Mn   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3B          ; XID_Continue # Mc       BALINESE VOWEL SIGN RA REPA TEDUNG
+1B3C          ; XID_Continue # Mn       BALINESE VOWEL SIGN LA LENGA
+1B3D..1B41    ; XID_Continue # Mc   [5] BALINESE VOWEL SIGN LA LENGA TEDUNG..BALINESE VOWEL SIGN TALING REPA TEDUNG
+1B42          ; XID_Continue # Mn       BALINESE VOWEL SIGN PEPET
+1B43..1B44    ; XID_Continue # Mc   [2] BALINESE VOWEL SIGN PEPET TEDUNG..BALINESE ADEG ADEG
+1B45..1B4C    ; XID_Continue # Lo   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B50..1B59    ; XID_Continue # Nd  [10] BALINESE DIGIT ZERO..BALINESE DIGIT NINE
+1B6B..1B73    ; XID_Continue # Mn   [9] BALINESE MUSICAL SYMBOL COMBINING TEGEH..BALINESE MUSICAL SYMBOL COMBINING GONG
+1B80..1B81    ; XID_Continue # Mn   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1B82          ; XID_Continue # Mc       SUNDANESE SIGN PANGWISAD
+1B83..1BA0    ; XID_Continue # Lo  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BA1          ; XID_Continue # Mc       SUNDANESE CONSONANT SIGN PAMINGKAL
+1BA2..1BA5    ; XID_Continue # Mn   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA6..1BA7    ; XID_Continue # Mc   [2] SUNDANESE VOWEL SIGN PANAELAENG..SUNDANESE VOWEL SIGN PANOLONG
+1BA8..1BA9    ; XID_Continue # Mn   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAA          ; XID_Continue # Mc       SUNDANESE SIGN PAMAAEH
+1BAB..1BAD    ; XID_Continue # Mn   [3] SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BAE..1BAF    ; XID_Continue # Lo   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BB0..1BB9    ; XID_Continue # Nd  [10] SUNDANESE DIGIT ZERO..SUNDANESE DIGIT NINE
+1BBA..1BE5    ; XID_Continue # Lo  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1BE6          ; XID_Continue # Mn       BATAK SIGN TOMPI
+1BE7          ; XID_Continue # Mc       BATAK VOWEL SIGN E
+1BE8..1BE9    ; XID_Continue # Mn   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BEA..1BEC    ; XID_Continue # Mc   [3] BATAK VOWEL SIGN I..BATAK VOWEL SIGN O
+1BED          ; XID_Continue # Mn       BATAK VOWEL SIGN KARO O
+1BEE          ; XID_Continue # Mc       BATAK VOWEL SIGN U
+1BEF..1BF1    ; XID_Continue # Mn   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1BF2..1BF3    ; XID_Continue # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
+1C00..1C23    ; XID_Continue # Lo  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C24..1C2B    ; XID_Continue # Mc   [8] LEPCHA SUBJOINED LETTER YA..LEPCHA VOWEL SIGN UU
+1C2C..1C33    ; XID_Continue # Mn   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C34..1C35    ; XID_Continue # Mc   [2] LEPCHA CONSONANT SIGN NYIN-DO..LEPCHA CONSONANT SIGN KANG
+1C36..1C37    ; XID_Continue # Mn   [2] LEPCHA SIGN RAN..LEPCHA SIGN NUKTA
+1C40..1C49    ; XID_Continue # Nd  [10] LEPCHA DIGIT ZERO..LEPCHA DIGIT NINE
+1C4D..1C4F    ; XID_Continue # Lo   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C50..1C59    ; XID_Continue # Nd  [10] OL CHIKI DIGIT ZERO..OL CHIKI DIGIT NINE
+1C5A..1C77    ; XID_Continue # Lo  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1C78..1C7D    ; XID_Continue # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1C80..1C88    ; XID_Continue # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; XID_Continue # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; XID_Continue # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1CD0..1CD2    ; XID_Continue # Mn   [3] VEDIC TONE KARSHANA..VEDIC TONE PRENKHA
+1CD4..1CE0    ; XID_Continue # Mn  [13] VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC TONE RIGVEDIC KASHMIRI INDEPENDENT SVARITA
+1CE1          ; XID_Continue # Mc       VEDIC TONE ATHARVAVEDIC INDEPENDENT SVARITA
+1CE2..1CE8    ; XID_Continue # Mn   [7] VEDIC SIGN VISARGA SVARITA..VEDIC SIGN VISARGA ANUDATTA WITH TAIL
+1CE9..1CEC    ; XID_Continue # Lo   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CED          ; XID_Continue # Mn       VEDIC SIGN TIRYAK
+1CEE..1CF3    ; XID_Continue # Lo   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF4          ; XID_Continue # Mn       VEDIC TONE CANDRA ABOVE
+1CF5..1CF6    ; XID_Continue # Lo   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CF7          ; XID_Continue # Mc       VEDIC SIGN ATIKRAMA
+1CF8..1CF9    ; XID_Continue # Mn   [2] VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING ABOVE
+1CFA          ; XID_Continue # Lo       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+1D00..1D2B    ; XID_Continue # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; XID_Continue # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; XID_Continue # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; XID_Continue # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; XID_Continue # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; XID_Continue # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1DC0..1DFF    ; XID_Continue # Mn  [64] COMBINING DOTTED GRAVE ACCENT..COMBINING RIGHT ARROWHEAD AND DOWN ARROWHEAD BELOW
+1E00..1F15    ; XID_Continue # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; XID_Continue # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; XID_Continue # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; XID_Continue # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; XID_Continue # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; XID_Continue # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; XID_Continue # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; XID_Continue # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; XID_Continue # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; XID_Continue # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; XID_Continue # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBE          ; XID_Continue # L&       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; XID_Continue # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; XID_Continue # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FD0..1FD3    ; XID_Continue # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; XID_Continue # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE0..1FEC    ; XID_Continue # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF2..1FF4    ; XID_Continue # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; XID_Continue # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+203F..2040    ; XID_Continue # Pc   [2] UNDERTIE..CHARACTER TIE
+2054          ; XID_Continue # Pc       INVERTED UNDERTIE
+2071          ; XID_Continue # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; XID_Continue # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; XID_Continue # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+20D0..20DC    ; XID_Continue # Mn  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20E1          ; XID_Continue # Mn       COMBINING LEFT RIGHT ARROW ABOVE
+20E5..20F0    ; XID_Continue # Mn  [12] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING ASTERISK ABOVE
+2102          ; XID_Continue # L&       DOUBLE-STRUCK CAPITAL C
+2107          ; XID_Continue # L&       EULER CONSTANT
+210A..2113    ; XID_Continue # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2115          ; XID_Continue # L&       DOUBLE-STRUCK CAPITAL N
+2118          ; XID_Continue # Sm       SCRIPT CAPITAL P
+2119..211D    ; XID_Continue # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; XID_Continue # L&       DOUBLE-STRUCK CAPITAL Z
+2126          ; XID_Continue # L&       OHM SIGN
+2128          ; XID_Continue # L&       BLACK-LETTER CAPITAL Z
+212A..212D    ; XID_Continue # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212E          ; XID_Continue # So       ESTIMATED SYMBOL
+212F..2134    ; XID_Continue # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2135..2138    ; XID_Continue # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+2139          ; XID_Continue # L&       INFORMATION SOURCE
+213C..213F    ; XID_Continue # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2145..2149    ; XID_Continue # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; XID_Continue # L&       TURNED SMALL F
+2160..2182    ; XID_Continue # Nl  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2183..2184    ; XID_Continue # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+2185..2188    ; XID_Continue # Nl   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+2C00..2C7B    ; XID_Continue # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; XID_Continue # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; XID_Continue # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CEB..2CEE    ; XID_Continue # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CEF..2CF1    ; XID_Continue # Mn   [3] COPTIC COMBINING NI ABOVE..COPTIC COMBINING SPIRITUS LENIS
+2CF2..2CF3    ; XID_Continue # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; XID_Continue # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; XID_Continue # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; XID_Continue # L&       GEORGIAN SMALL LETTER AEN
+2D30..2D67    ; XID_Continue # Lo  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D6F          ; XID_Continue # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D7F          ; XID_Continue # Mn       TIFINAGH CONSONANT JOINER
+2D80..2D96    ; XID_Continue # Lo  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+2DE0..2DFF    ; XID_Continue # Mn  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+3005          ; XID_Continue # Lm       IDEOGRAPHIC ITERATION MARK
+3006          ; XID_Continue # Lo       IDEOGRAPHIC CLOSING MARK
+3007          ; XID_Continue # Nl       IDEOGRAPHIC NUMBER ZERO
+3021..3029    ; XID_Continue # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+302A..302D    ; XID_Continue # Mn   [4] IDEOGRAPHIC LEVEL TONE MARK..IDEOGRAPHIC ENTERING TONE MARK
+302E..302F    ; XID_Continue # Mc   [2] HANGUL SINGLE DOT TONE MARK..HANGUL DOUBLE DOT TONE MARK
+3031..3035    ; XID_Continue # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+3038..303A    ; XID_Continue # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+303B          ; XID_Continue # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+303C          ; XID_Continue # Lo       MASU MARK
+3041..3096    ; XID_Continue # Lo  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+3099..309A    ; XID_Continue # Mn   [2] COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK..COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309D..309E    ; XID_Continue # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+309F          ; XID_Continue # Lo       HIRAGANA DIGRAPH YORI
+30A1..30FA    ; XID_Continue # Lo  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FC..30FE    ; XID_Continue # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+30FF          ; XID_Continue # Lo       KATAKANA DIGRAPH KOTO
+3105..312F    ; XID_Continue # Lo  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; XID_Continue # Lo  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+31A0..31BF    ; XID_Continue # Lo  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31F0..31FF    ; XID_Continue # Lo  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3400..4DBF    ; XID_Continue # Lo [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4E00..A014    ; XID_Continue # Lo [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A015          ; XID_Continue # Lm       YI SYLLABLE WU
+A016..A48C    ; XID_Continue # Lo [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A4D0..A4F7    ; XID_Continue # Lo  [40] LISU LETTER BA..LISU LETTER OE
+A4F8..A4FD    ; XID_Continue # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A500..A60B    ; XID_Continue # Lo [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A60C          ; XID_Continue # Lm       VAI SYLLABLE LENGTHENER
+A610..A61F    ; XID_Continue # Lo  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A620..A629    ; XID_Continue # Nd  [10] VAI DIGIT ZERO..VAI DIGIT NINE
+A62A..A62B    ; XID_Continue # Lo   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A640..A66D    ; XID_Continue # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A66E          ; XID_Continue # Lo       CYRILLIC LETTER MULTIOCULAR O
+A66F          ; XID_Continue # Mn       COMBINING CYRILLIC VZMET
+A674..A67D    ; XID_Continue # Mn  [10] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC PAYEROK
+A67F          ; XID_Continue # Lm       CYRILLIC PAYEROK
+A680..A69B    ; XID_Continue # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; XID_Continue # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A69E..A69F    ; XID_Continue # Mn   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6A0..A6E5    ; XID_Continue # Lo  [70] BAMUM LETTER A..BAMUM LETTER KI
+A6E6..A6EF    ; XID_Continue # Nl  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+A6F0..A6F1    ; XID_Continue # Mn   [2] BAMUM COMBINING MARK KOQNDON..BAMUM COMBINING MARK TUKWENTIS
+A717..A71F    ; XID_Continue # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A722..A76F    ; XID_Continue # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; XID_Continue # Lm       MODIFIER LETTER US
+A771..A787    ; XID_Continue # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A788          ; XID_Continue # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A78B..A78E    ; XID_Continue # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A78F          ; XID_Continue # Lo       LATIN LETTER SINOLOGICAL DOT
+A790..A7CA    ; XID_Continue # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; XID_Continue # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; XID_Continue # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; XID_Continue # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; XID_Continue # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; XID_Continue # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F7          ; XID_Continue # Lo       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7F8..A7F9    ; XID_Continue # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; XID_Continue # L&       LATIN LETTER SMALL CAPITAL TURNED M
+A7FB..A801    ; XID_Continue # Lo   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A802          ; XID_Continue # Mn       SYLOTI NAGRI SIGN DVISVARA
+A803..A805    ; XID_Continue # Lo   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A806          ; XID_Continue # Mn       SYLOTI NAGRI SIGN HASANTA
+A807..A80A    ; XID_Continue # Lo   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80B          ; XID_Continue # Mn       SYLOTI NAGRI SIGN ANUSVARA
+A80C..A822    ; XID_Continue # Lo  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A823..A824    ; XID_Continue # Mc   [2] SYLOTI NAGRI VOWEL SIGN A..SYLOTI NAGRI VOWEL SIGN I
+A825..A826    ; XID_Continue # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A827          ; XID_Continue # Mc       SYLOTI NAGRI VOWEL SIGN OO
+A82C          ; XID_Continue # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A840..A873    ; XID_Continue # Lo  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A880..A881    ; XID_Continue # Mc   [2] SAURASHTRA SIGN ANUSVARA..SAURASHTRA SIGN VISARGA
+A882..A8B3    ; XID_Continue # Lo  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8B4..A8C3    ; XID_Continue # Mc  [16] SAURASHTRA CONSONANT SIGN HAARU..SAURASHTRA VOWEL SIGN AU
+A8C4..A8C5    ; XID_Continue # Mn   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
+A8D0..A8D9    ; XID_Continue # Nd  [10] SAURASHTRA DIGIT ZERO..SAURASHTRA DIGIT NINE
+A8E0..A8F1    ; XID_Continue # Mn  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8F2..A8F7    ; XID_Continue # Lo   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8FB          ; XID_Continue # Lo       DEVANAGARI HEADSTROKE
+A8FD..A8FE    ; XID_Continue # Lo   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A8FF          ; XID_Continue # Mn       DEVANAGARI VOWEL SIGN AY
+A900..A909    ; XID_Continue # Nd  [10] KAYAH LI DIGIT ZERO..KAYAH LI DIGIT NINE
+A90A..A925    ; XID_Continue # Lo  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A926..A92D    ; XID_Continue # Mn   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
+A930..A946    ; XID_Continue # Lo  [23] REJANG LETTER KA..REJANG LETTER A
+A947..A951    ; XID_Continue # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A952..A953    ; XID_Continue # Mc   [2] REJANG CONSONANT SIGN H..REJANG VIRAMA
+A960..A97C    ; XID_Continue # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A980..A982    ; XID_Continue # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A983          ; XID_Continue # Mc       JAVANESE SIGN WIGNYAN
+A984..A9B2    ; XID_Continue # Lo  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9B3          ; XID_Continue # Mn       JAVANESE SIGN CECAK TELU
+A9B4..A9B5    ; XID_Continue # Mc   [2] JAVANESE VOWEL SIGN TARUNG..JAVANESE VOWEL SIGN TOLONG
+A9B6..A9B9    ; XID_Continue # Mn   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BA..A9BB    ; XID_Continue # Mc   [2] JAVANESE VOWEL SIGN TALING..JAVANESE VOWEL SIGN DIRGA MURE
+A9BC..A9BD    ; XID_Continue # Mn   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9BE..A9C0    ; XID_Continue # Mc   [3] JAVANESE CONSONANT SIGN PENGKAL..JAVANESE PANGKON
+A9CF          ; XID_Continue # Lm       JAVANESE PANGRANGKEP
+A9D0..A9D9    ; XID_Continue # Nd  [10] JAVANESE DIGIT ZERO..JAVANESE DIGIT NINE
+A9E0..A9E4    ; XID_Continue # Lo   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E5          ; XID_Continue # Mn       MYANMAR SIGN SHAN SAW
+A9E6          ; XID_Continue # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+A9E7..A9EF    ; XID_Continue # Lo   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9F0..A9F9    ; XID_Continue # Nd  [10] MYANMAR TAI LAING DIGIT ZERO..MYANMAR TAI LAING DIGIT NINE
+A9FA..A9FE    ; XID_Continue # Lo   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; XID_Continue # Lo  [41] CHAM LETTER A..CHAM LETTER HA
+AA29..AA2E    ; XID_Continue # Mn   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA2F..AA30    ; XID_Continue # Mc   [2] CHAM VOWEL SIGN O..CHAM VOWEL SIGN AI
+AA31..AA32    ; XID_Continue # Mn   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA33..AA34    ; XID_Continue # Mc   [2] CHAM CONSONANT SIGN YA..CHAM CONSONANT SIGN RA
+AA35..AA36    ; XID_Continue # Mn   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA40..AA42    ; XID_Continue # Lo   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA43          ; XID_Continue # Mn       CHAM CONSONANT SIGN FINAL NG
+AA44..AA4B    ; XID_Continue # Lo   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA4C          ; XID_Continue # Mn       CHAM CONSONANT SIGN FINAL M
+AA4D          ; XID_Continue # Mc       CHAM CONSONANT SIGN FINAL H
+AA50..AA59    ; XID_Continue # Nd  [10] CHAM DIGIT ZERO..CHAM DIGIT NINE
+AA60..AA6F    ; XID_Continue # Lo  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA70          ; XID_Continue # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA71..AA76    ; XID_Continue # Lo   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA7A          ; XID_Continue # Lo       MYANMAR LETTER AITON RA
+AA7B          ; XID_Continue # Mc       MYANMAR SIGN PAO KAREN TONE
+AA7C          ; XID_Continue # Mn       MYANMAR SIGN TAI LAING TONE-2
+AA7D          ; XID_Continue # Mc       MYANMAR SIGN TAI LAING TONE-5
+AA7E..AAAF    ; XID_Continue # Lo  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB0          ; XID_Continue # Mn       TAI VIET MAI KANG
+AAB1          ; XID_Continue # Lo       TAI VIET VOWEL AA
+AAB2..AAB4    ; XID_Continue # Mn   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB5..AAB6    ; XID_Continue # Lo   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB7..AAB8    ; XID_Continue # Mn   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AAB9..AABD    ; XID_Continue # Lo   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AABE..AABF    ; XID_Continue # Mn   [2] TAI VIET VOWEL AM..TAI VIET TONE MAI EK
+AAC0          ; XID_Continue # Lo       TAI VIET TONE MAI NUENG
+AAC1          ; XID_Continue # Mn       TAI VIET TONE MAI THO
+AAC2          ; XID_Continue # Lo       TAI VIET TONE MAI SONG
+AADB..AADC    ; XID_Continue # Lo   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AADD          ; XID_Continue # Lm       TAI VIET SYMBOL SAM
+AAE0..AAEA    ; XID_Continue # Lo  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAEB          ; XID_Continue # Mc       MEETEI MAYEK VOWEL SIGN II
+AAEC..AAED    ; XID_Continue # Mn   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAEE..AAEF    ; XID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN AU..MEETEI MAYEK VOWEL SIGN AAU
+AAF2          ; XID_Continue # Lo       MEETEI MAYEK ANJI
+AAF3..AAF4    ; XID_Continue # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AAF5          ; XID_Continue # Mc       MEETEI MAYEK VOWEL SIGN VISARGA
+AAF6          ; XID_Continue # Mn       MEETEI MAYEK VIRAMA
+AB01..AB06    ; XID_Continue # Lo   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; XID_Continue # Lo   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; XID_Continue # Lo   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+AB30..AB5A    ; XID_Continue # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5C..AB5F    ; XID_Continue # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; XID_Continue # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; XID_Continue # Lm       MODIFIER LETTER SMALL TURNED W
+AB70..ABBF    ; XID_Continue # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+ABC0..ABE2    ; XID_Continue # Lo  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+ABE3..ABE4    ; XID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN ONAP..MEETEI MAYEK VOWEL SIGN INAP
+ABE5          ; XID_Continue # Mn       MEETEI MAYEK VOWEL SIGN ANAP
+ABE6..ABE7    ; XID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN YENAP..MEETEI MAYEK VOWEL SIGN SOUNAP
+ABE8          ; XID_Continue # Mn       MEETEI MAYEK VOWEL SIGN UNAP
+ABE9..ABEA    ; XID_Continue # Mc   [2] MEETEI MAYEK VOWEL SIGN CHEINAP..MEETEI MAYEK VOWEL SIGN NUNG
+ABEC          ; XID_Continue # Mc       MEETEI MAYEK LUM IYEK
+ABED          ; XID_Continue # Mn       MEETEI MAYEK APUN IYEK
+ABF0..ABF9    ; XID_Continue # Nd  [10] MEETEI MAYEK DIGIT ZERO..MEETEI MAYEK DIGIT NINE
+AC00..D7A3    ; XID_Continue # Lo [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; XID_Continue # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; XID_Continue # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; XID_Continue # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; XID_Continue # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB00..FB06    ; XID_Continue # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; XID_Continue # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FB1D          ; XID_Continue # Lo       HEBREW LETTER YOD WITH HIRIQ
+FB1E          ; XID_Continue # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
+FB1F..FB28    ; XID_Continue # Lo  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB2A..FB36    ; XID_Continue # Lo  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; XID_Continue # Lo   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; XID_Continue # Lo       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; XID_Continue # Lo   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; XID_Continue # Lo   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; XID_Continue # Lo [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBD3..FC5D    ; XID_Continue # Lo [139] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF MAKSURA WITH SUPERSCRIPT ALEF ISOLATED FORM
+FC64..FD3D    ; XID_Continue # Lo [218] ARABIC LIGATURE YEH WITH HAMZA ABOVE WITH REH FINAL FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD50..FD8F    ; XID_Continue # Lo  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; XID_Continue # Lo  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDF0..FDF9    ; XID_Continue # Lo  [10] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE SALLA ISOLATED FORM
+FE00..FE0F    ; XID_Continue # Mn  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FE20..FE2F    ; XID_Continue # Mn  [16] COMBINING LIGATURE LEFT HALF..COMBINING CYRILLIC TITLO RIGHT HALF
+FE33..FE34    ; XID_Continue # Pc   [2] PRESENTATION FORM FOR VERTICAL LOW LINE..PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
+FE4D..FE4F    ; XID_Continue # Pc   [3] DASHED LOW LINE..WAVY LOW LINE
+FE71          ; XID_Continue # Lo       ARABIC TATWEEL WITH FATHATAN ABOVE
+FE73          ; XID_Continue # Lo       ARABIC TAIL FRAGMENT
+FE77          ; XID_Continue # Lo       ARABIC FATHA MEDIAL FORM
+FE79          ; XID_Continue # Lo       ARABIC DAMMA MEDIAL FORM
+FE7B          ; XID_Continue # Lo       ARABIC KASRA MEDIAL FORM
+FE7D          ; XID_Continue # Lo       ARABIC SHADDA MEDIAL FORM
+FE7F..FEFC    ; XID_Continue # Lo [126] ARABIC SUKUN MEDIAL FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF10..FF19    ; XID_Continue # Nd  [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE
+FF21..FF3A    ; XID_Continue # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF3F          ; XID_Continue # Pc       FULLWIDTH LOW LINE
+FF41..FF5A    ; XID_Continue # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+FF66..FF6F    ; XID_Continue # Lo  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF70          ; XID_Continue # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF71..FF9D    ; XID_Continue # Lo  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FF9E..FF9F    ; XID_Continue # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+FFA0..FFBE    ; XID_Continue # Lo  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; XID_Continue # Lo   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; XID_Continue # Lo   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; XID_Continue # Lo   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; XID_Continue # Lo   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+10000..1000B  ; XID_Continue # Lo  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; XID_Continue # Lo  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; XID_Continue # Lo  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; XID_Continue # Lo   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; XID_Continue # Lo  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; XID_Continue # Lo  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; XID_Continue # Lo [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10140..10174  ; XID_Continue # Nl  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+101FD         ; XID_Continue # Mn       PHAISTOS DISC SIGN COMBINING OBLIQUE STROKE
+10280..1029C  ; XID_Continue # Lo  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; XID_Continue # Lo  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+102E0         ; XID_Continue # Mn       COPTIC EPACT THOUSANDS MARK
+10300..1031F  ; XID_Continue # Lo  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+1032D..10340  ; XID_Continue # Lo  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10341         ; XID_Continue # Nl       GOTHIC LETTER NINETY
+10342..10349  ; XID_Continue # Lo   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+1034A         ; XID_Continue # Nl       GOTHIC LETTER NINE HUNDRED
+10350..10375  ; XID_Continue # Lo  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10376..1037A  ; XID_Continue # Mn   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10380..1039D  ; XID_Continue # Lo  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+103A0..103C3  ; XID_Continue # Lo  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; XID_Continue # Lo   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+103D1..103D5  ; XID_Continue # Nl   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+10400..1044F  ; XID_Continue # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+10450..1049D  ; XID_Continue # Lo  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+104A0..104A9  ; XID_Continue # Nd  [10] OSMANYA DIGIT ZERO..OSMANYA DIGIT NINE
+104B0..104D3  ; XID_Continue # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; XID_Continue # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10500..10527  ; XID_Continue # Lo  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; XID_Continue # Lo  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+10570..1057A  ; XID_Continue # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; XID_Continue # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; XID_Continue # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; XID_Continue # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; XID_Continue # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; XID_Continue # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; XID_Continue # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; XID_Continue # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10600..10736  ; XID_Continue # Lo [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; XID_Continue # Lo  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; XID_Continue # Lo   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10780..10785  ; XID_Continue # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; XID_Continue # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; XID_Continue # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10800..10805  ; XID_Continue # Lo   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; XID_Continue # Lo       CYPRIOT SYLLABLE JO
+1080A..10835  ; XID_Continue # Lo  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; XID_Continue # Lo   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; XID_Continue # Lo       CYPRIOT SYLLABLE ZA
+1083F..10855  ; XID_Continue # Lo  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10860..10876  ; XID_Continue # Lo  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10880..1089E  ; XID_Continue # Lo  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108E0..108F2  ; XID_Continue # Lo  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; XID_Continue # Lo   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+10900..10915  ; XID_Continue # Lo  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10920..10939  ; XID_Continue # Lo  [26] LYDIAN LETTER A..LYDIAN LETTER C
+10980..109B7  ; XID_Continue # Lo  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BE..109BF  ; XID_Continue # Lo   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+10A00         ; XID_Continue # Lo       KHAROSHTHI LETTER A
+10A01..10A03  ; XID_Continue # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; XID_Continue # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; XID_Continue # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A10..10A13  ; XID_Continue # Lo   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; XID_Continue # Lo   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; XID_Continue # Lo  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A38..10A3A  ; XID_Continue # Mn   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
+10A3F         ; XID_Continue # Mn       KHAROSHTHI VIRAMA
+10A60..10A7C  ; XID_Continue # Lo  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A80..10A9C  ; XID_Continue # Lo  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10AC0..10AC7  ; XID_Continue # Lo   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC9..10AE4  ; XID_Continue # Lo  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10AE5..10AE6  ; XID_Continue # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10B00..10B35  ; XID_Continue # Lo  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B40..10B55  ; XID_Continue # Lo  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B60..10B72  ; XID_Continue # Lo  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B80..10B91  ; XID_Continue # Lo  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10C00..10C48  ; XID_Continue # Lo  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10C80..10CB2  ; XID_Continue # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; XID_Continue # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+10D00..10D23  ; XID_Continue # Lo  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10D24..10D27  ; XID_Continue # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10D30..10D39  ; XID_Continue # Nd  [10] HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA DIGIT NINE
+10E80..10EA9  ; XID_Continue # Lo  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EAB..10EAC  ; XID_Continue # Mn   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EB0..10EB1  ; XID_Continue # Lo   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10EFD..10EFF  ; XID_Continue # Mn   [3] ARABIC SMALL LOW WORD SAKTA..ARABIC SMALL LOW WORD MADDA
+10F00..10F1C  ; XID_Continue # Lo  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F27         ; XID_Continue # Lo       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; XID_Continue # Lo  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F46..10F50  ; XID_Continue # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
+10F70..10F81  ; XID_Continue # Lo  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10F82..10F85  ; XID_Continue # Mn   [4] OLD UYGHUR COMBINING DOT ABOVE..OLD UYGHUR COMBINING TWO DOTS BELOW
+10FB0..10FC4  ; XID_Continue # Lo  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FE0..10FF6  ; XID_Continue # Lo  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11000         ; XID_Continue # Mc       BRAHMI SIGN CANDRABINDU
+11001         ; XID_Continue # Mn       BRAHMI SIGN ANUSVARA
+11002         ; XID_Continue # Mc       BRAHMI SIGN VISARGA
+11003..11037  ; XID_Continue # Lo  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11038..11046  ; XID_Continue # Mn  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
+11066..1106F  ; XID_Continue # Nd  [10] BRAHMI DIGIT ZERO..BRAHMI DIGIT NINE
+11070         ; XID_Continue # Mn       BRAHMI SIGN OLD TAMIL VIRAMA
+11071..11072  ; XID_Continue # Lo   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11073..11074  ; XID_Continue # Mn   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+11075         ; XID_Continue # Lo       BRAHMI LETTER OLD TAMIL LLA
+1107F..11081  ; XID_Continue # Mn   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
+11082         ; XID_Continue # Mc       KAITHI SIGN VISARGA
+11083..110AF  ; XID_Continue # Lo  [45] KAITHI LETTER A..KAITHI LETTER HA
+110B0..110B2  ; XID_Continue # Mc   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
+110B3..110B6  ; XID_Continue # Mn   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B7..110B8  ; XID_Continue # Mc   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
+110B9..110BA  ; XID_Continue # Mn   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
+110C2         ; XID_Continue # Mn       KAITHI VOWEL SIGN VOCALIC R
+110D0..110E8  ; XID_Continue # Lo  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+110F0..110F9  ; XID_Continue # Nd  [10] SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT NINE
+11100..11102  ; XID_Continue # Mn   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11103..11126  ; XID_Continue # Lo  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+11127..1112B  ; XID_Continue # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112C         ; XID_Continue # Mc       CHAKMA VOWEL SIGN E
+1112D..11134  ; XID_Continue # Mn   [8] CHAKMA VOWEL SIGN AI..CHAKMA MAAYYAA
+11136..1113F  ; XID_Continue # Nd  [10] CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE
+11144         ; XID_Continue # Lo       CHAKMA LETTER LHAA
+11145..11146  ; XID_Continue # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
+11147         ; XID_Continue # Lo       CHAKMA LETTER VAA
+11150..11172  ; XID_Continue # Lo  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11173         ; XID_Continue # Mn       MAHAJANI SIGN NUKTA
+11176         ; XID_Continue # Lo       MAHAJANI LIGATURE SHRI
+11180..11181  ; XID_Continue # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+11182         ; XID_Continue # Mc       SHARADA SIGN VISARGA
+11183..111B2  ; XID_Continue # Lo  [48] SHARADA LETTER A..SHARADA LETTER HA
+111B3..111B5  ; XID_Continue # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
+111B6..111BE  ; XID_Continue # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111BF..111C0  ; XID_Continue # Mc   [2] SHARADA VOWEL SIGN AU..SHARADA SIGN VIRAMA
+111C1..111C4  ; XID_Continue # Lo   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111C9..111CC  ; XID_Continue # Mn   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
+111CE         ; XID_Continue # Mc       SHARADA VOWEL SIGN PRISHTHAMATRA E
+111CF         ; XID_Continue # Mn       SHARADA SIGN INVERTED CANDRABINDU
+111D0..111D9  ; XID_Continue # Nd  [10] SHARADA DIGIT ZERO..SHARADA DIGIT NINE
+111DA         ; XID_Continue # Lo       SHARADA EKAM
+111DC         ; XID_Continue # Lo       SHARADA HEADSTROKE
+11200..11211  ; XID_Continue # Lo  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; XID_Continue # Lo  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1122C..1122E  ; XID_Continue # Mc   [3] KHOJKI VOWEL SIGN AA..KHOJKI VOWEL SIGN II
+1122F..11231  ; XID_Continue # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11232..11233  ; XID_Continue # Mc   [2] KHOJKI VOWEL SIGN O..KHOJKI VOWEL SIGN AU
+11234         ; XID_Continue # Mn       KHOJKI SIGN ANUSVARA
+11235         ; XID_Continue # Mc       KHOJKI SIGN VIRAMA
+11236..11237  ; XID_Continue # Mn   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
+1123E         ; XID_Continue # Mn       KHOJKI SIGN SUKUN
+1123F..11240  ; XID_Continue # Lo   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11241         ; XID_Continue # Mn       KHOJKI VOWEL SIGN VOCALIC R
+11280..11286  ; XID_Continue # Lo   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; XID_Continue # Lo       MULTANI LETTER GHA
+1128A..1128D  ; XID_Continue # Lo   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; XID_Continue # Lo  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; XID_Continue # Lo  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112B0..112DE  ; XID_Continue # Lo  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+112DF         ; XID_Continue # Mn       KHUDAWADI SIGN ANUSVARA
+112E0..112E2  ; XID_Continue # Mc   [3] KHUDAWADI VOWEL SIGN AA..KHUDAWADI VOWEL SIGN II
+112E3..112EA  ; XID_Continue # Mn   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
+112F0..112F9  ; XID_Continue # Nd  [10] KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE
+11300..11301  ; XID_Continue # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+11302..11303  ; XID_Continue # Mc   [2] GRANTHA SIGN ANUSVARA..GRANTHA SIGN VISARGA
+11305..1130C  ; XID_Continue # Lo   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; XID_Continue # Lo   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; XID_Continue # Lo  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; XID_Continue # Lo   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; XID_Continue # Lo   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; XID_Continue # Lo   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133B..1133C  ; XID_Continue # Mn   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
+1133D         ; XID_Continue # Lo       GRANTHA SIGN AVAGRAHA
+1133E..1133F  ; XID_Continue # Mc   [2] GRANTHA VOWEL SIGN AA..GRANTHA VOWEL SIGN I
+11340         ; XID_Continue # Mn       GRANTHA VOWEL SIGN II
+11341..11344  ; XID_Continue # Mc   [4] GRANTHA VOWEL SIGN U..GRANTHA VOWEL SIGN VOCALIC RR
+11347..11348  ; XID_Continue # Mc   [2] GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
+1134B..1134D  ; XID_Continue # Mc   [3] GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA
+11350         ; XID_Continue # Lo       GRANTHA OM
+11357         ; XID_Continue # Mc       GRANTHA AU LENGTH MARK
+1135D..11361  ; XID_Continue # Lo   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11362..11363  ; XID_Continue # Mc   [2] GRANTHA VOWEL SIGN VOCALIC L..GRANTHA VOWEL SIGN VOCALIC LL
+11366..1136C  ; XID_Continue # Mn   [7] COMBINING GRANTHA DIGIT ZERO..COMBINING GRANTHA DIGIT SIX
+11370..11374  ; XID_Continue # Mn   [5] COMBINING GRANTHA LETTER A..COMBINING GRANTHA LETTER PA
+11400..11434  ; XID_Continue # Lo  [53] NEWA LETTER A..NEWA LETTER HA
+11435..11437  ; XID_Continue # Mc   [3] NEWA VOWEL SIGN AA..NEWA VOWEL SIGN II
+11438..1143F  ; XID_Continue # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11440..11441  ; XID_Continue # Mc   [2] NEWA VOWEL SIGN O..NEWA VOWEL SIGN AU
+11442..11444  ; XID_Continue # Mn   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
+11445         ; XID_Continue # Mc       NEWA SIGN VISARGA
+11446         ; XID_Continue # Mn       NEWA SIGN NUKTA
+11447..1144A  ; XID_Continue # Lo   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+11450..11459  ; XID_Continue # Nd  [10] NEWA DIGIT ZERO..NEWA DIGIT NINE
+1145E         ; XID_Continue # Mn       NEWA SANDHI MARK
+1145F..11461  ; XID_Continue # Lo   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; XID_Continue # Lo  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114B0..114B2  ; XID_Continue # Mc   [3] TIRHUTA VOWEL SIGN AA..TIRHUTA VOWEL SIGN II
+114B3..114B8  ; XID_Continue # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114B9         ; XID_Continue # Mc       TIRHUTA VOWEL SIGN E
+114BA         ; XID_Continue # Mn       TIRHUTA VOWEL SIGN SHORT E
+114BB..114BE  ; XID_Continue # Mc   [4] TIRHUTA VOWEL SIGN AI..TIRHUTA VOWEL SIGN AU
+114BF..114C0  ; XID_Continue # Mn   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C1         ; XID_Continue # Mc       TIRHUTA SIGN VISARGA
+114C2..114C3  ; XID_Continue # Mn   [2] TIRHUTA SIGN VIRAMA..TIRHUTA SIGN NUKTA
+114C4..114C5  ; XID_Continue # Lo   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C7         ; XID_Continue # Lo       TIRHUTA OM
+114D0..114D9  ; XID_Continue # Nd  [10] TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE
+11580..115AE  ; XID_Continue # Lo  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115AF..115B1  ; XID_Continue # Mc   [3] SIDDHAM VOWEL SIGN AA..SIDDHAM VOWEL SIGN II
+115B2..115B5  ; XID_Continue # Mn   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115B8..115BB  ; XID_Continue # Mc   [4] SIDDHAM VOWEL SIGN E..SIDDHAM VOWEL SIGN AU
+115BC..115BD  ; XID_Continue # Mn   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BE         ; XID_Continue # Mc       SIDDHAM SIGN VISARGA
+115BF..115C0  ; XID_Continue # Mn   [2] SIDDHAM SIGN VIRAMA..SIDDHAM SIGN NUKTA
+115D8..115DB  ; XID_Continue # Lo   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+115DC..115DD  ; XID_Continue # Mn   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11600..1162F  ; XID_Continue # Lo  [48] MODI LETTER A..MODI LETTER LLA
+11630..11632  ; XID_Continue # Mc   [3] MODI VOWEL SIGN AA..MODI VOWEL SIGN II
+11633..1163A  ; XID_Continue # Mn   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163B..1163C  ; XID_Continue # Mc   [2] MODI VOWEL SIGN O..MODI VOWEL SIGN AU
+1163D         ; XID_Continue # Mn       MODI SIGN ANUSVARA
+1163E         ; XID_Continue # Mc       MODI SIGN VISARGA
+1163F..11640  ; XID_Continue # Mn   [2] MODI SIGN VIRAMA..MODI SIGN ARDHACANDRA
+11644         ; XID_Continue # Lo       MODI SIGN HUVA
+11650..11659  ; XID_Continue # Nd  [10] MODI DIGIT ZERO..MODI DIGIT NINE
+11680..116AA  ; XID_Continue # Lo  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116AB         ; XID_Continue # Mn       TAKRI SIGN ANUSVARA
+116AC         ; XID_Continue # Mc       TAKRI SIGN VISARGA
+116AD         ; XID_Continue # Mn       TAKRI VOWEL SIGN AA
+116AE..116AF  ; XID_Continue # Mc   [2] TAKRI VOWEL SIGN I..TAKRI VOWEL SIGN II
+116B0..116B5  ; XID_Continue # Mn   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B6         ; XID_Continue # Mc       TAKRI SIGN VIRAMA
+116B7         ; XID_Continue # Mn       TAKRI SIGN NUKTA
+116B8         ; XID_Continue # Lo       TAKRI LETTER ARCHAIC KHA
+116C0..116C9  ; XID_Continue # Nd  [10] TAKRI DIGIT ZERO..TAKRI DIGIT NINE
+11700..1171A  ; XID_Continue # Lo  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+1171D..1171F  ; XID_Continue # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11720..11721  ; XID_Continue # Mc   [2] AHOM VOWEL SIGN A..AHOM VOWEL SIGN AA
+11722..11725  ; XID_Continue # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11726         ; XID_Continue # Mc       AHOM VOWEL SIGN E
+11727..1172B  ; XID_Continue # Mn   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
+11730..11739  ; XID_Continue # Nd  [10] AHOM DIGIT ZERO..AHOM DIGIT NINE
+11740..11746  ; XID_Continue # Lo   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; XID_Continue # Lo  [44] DOGRA LETTER A..DOGRA LETTER RRA
+1182C..1182E  ; XID_Continue # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+1182F..11837  ; XID_Continue # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11838         ; XID_Continue # Mc       DOGRA SIGN VISARGA
+11839..1183A  ; XID_Continue # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+118A0..118DF  ; XID_Continue # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+118E0..118E9  ; XID_Continue # Nd  [10] WARANG CITI DIGIT ZERO..WARANG CITI DIGIT NINE
+118FF..11906  ; XID_Continue # Lo   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; XID_Continue # Lo       DIVES AKURU LETTER O
+1190C..11913  ; XID_Continue # Lo   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; XID_Continue # Lo   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; XID_Continue # Lo  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+11930..11935  ; XID_Continue # Mc   [6] DIVES AKURU VOWEL SIGN AA..DIVES AKURU VOWEL SIGN E
+11937..11938  ; XID_Continue # Mc   [2] DIVES AKURU VOWEL SIGN AI..DIVES AKURU VOWEL SIGN O
+1193B..1193C  ; XID_Continue # Mn   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193D         ; XID_Continue # Mc       DIVES AKURU SIGN HALANTA
+1193E         ; XID_Continue # Mn       DIVES AKURU VIRAMA
+1193F         ; XID_Continue # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11940         ; XID_Continue # Mc       DIVES AKURU MEDIAL YA
+11941         ; XID_Continue # Lo       DIVES AKURU INITIAL RA
+11942         ; XID_Continue # Mc       DIVES AKURU MEDIAL RA
+11943         ; XID_Continue # Mn       DIVES AKURU SIGN NUKTA
+11950..11959  ; XID_Continue # Nd  [10] DIVES AKURU DIGIT ZERO..DIVES AKURU DIGIT NINE
+119A0..119A7  ; XID_Continue # Lo   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; XID_Continue # Lo  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119D1..119D3  ; XID_Continue # Mc   [3] NANDINAGARI VOWEL SIGN AA..NANDINAGARI VOWEL SIGN II
+119D4..119D7  ; XID_Continue # Mn   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; XID_Continue # Mn   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119DC..119DF  ; XID_Continue # Mc   [4] NANDINAGARI VOWEL SIGN O..NANDINAGARI SIGN VISARGA
+119E0         ; XID_Continue # Mn       NANDINAGARI SIGN VIRAMA
+119E1         ; XID_Continue # Lo       NANDINAGARI SIGN AVAGRAHA
+119E3         ; XID_Continue # Lo       NANDINAGARI HEADSTROKE
+119E4         ; XID_Continue # Mc       NANDINAGARI VOWEL SIGN PRISHTHAMATRA E
+11A00         ; XID_Continue # Lo       ZANABAZAR SQUARE LETTER A
+11A01..11A0A  ; XID_Continue # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A0B..11A32  ; XID_Continue # Lo  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A33..11A38  ; XID_Continue # Mn   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
+11A39         ; XID_Continue # Mc       ZANABAZAR SQUARE SIGN VISARGA
+11A3A         ; XID_Continue # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A3B..11A3E  ; XID_Continue # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A47         ; XID_Continue # Mn       ZANABAZAR SQUARE SUBJOINER
+11A50         ; XID_Continue # Lo       SOYOMBO LETTER A
+11A51..11A56  ; XID_Continue # Mn   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A57..11A58  ; XID_Continue # Mc   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
+11A59..11A5B  ; XID_Continue # Mn   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A5C..11A89  ; XID_Continue # Lo  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A8A..11A96  ; XID_Continue # Mn  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A97         ; XID_Continue # Mc       SOYOMBO SIGN VISARGA
+11A98..11A99  ; XID_Continue # Mn   [2] SOYOMBO GEMINATION MARK..SOYOMBO SUBJOINER
+11A9D         ; XID_Continue # Lo       SOYOMBO MARK PLUTA
+11AB0..11AF8  ; XID_Continue # Lo  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11C00..11C08  ; XID_Continue # Lo   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; XID_Continue # Lo  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C2F         ; XID_Continue # Mc       BHAIKSUKI VOWEL SIGN AA
+11C30..11C36  ; XID_Continue # Mn   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; XID_Continue # Mn   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3E         ; XID_Continue # Mc       BHAIKSUKI SIGN VISARGA
+11C3F         ; XID_Continue # Mn       BHAIKSUKI SIGN VIRAMA
+11C40         ; XID_Continue # Lo       BHAIKSUKI SIGN AVAGRAHA
+11C50..11C59  ; XID_Continue # Nd  [10] BHAIKSUKI DIGIT ZERO..BHAIKSUKI DIGIT NINE
+11C72..11C8F  ; XID_Continue # Lo  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11C92..11CA7  ; XID_Continue # Mn  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CA9         ; XID_Continue # Mc       MARCHEN SUBJOINED LETTER YA
+11CAA..11CB0  ; XID_Continue # Mn   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB1         ; XID_Continue # Mc       MARCHEN VOWEL SIGN I
+11CB2..11CB3  ; XID_Continue # Mn   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB4         ; XID_Continue # Mc       MARCHEN VOWEL SIGN O
+11CB5..11CB6  ; XID_Continue # Mn   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D00..11D06  ; XID_Continue # Lo   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; XID_Continue # Lo   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; XID_Continue # Lo  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D31..11D36  ; XID_Continue # Mn   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; XID_Continue # Mn       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; XID_Continue # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D45  ; XID_Continue # Mn   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
+11D46         ; XID_Continue # Lo       MASARAM GONDI REPHA
+11D47         ; XID_Continue # Mn       MASARAM GONDI RA-KARA
+11D50..11D59  ; XID_Continue # Nd  [10] MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT NINE
+11D60..11D65  ; XID_Continue # Lo   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; XID_Continue # Lo   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; XID_Continue # Lo  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D8A..11D8E  ; XID_Continue # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D90..11D91  ; XID_Continue # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D93..11D94  ; XID_Continue # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D95         ; XID_Continue # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D96         ; XID_Continue # Mc       GUNJALA GONDI SIGN VISARGA
+11D97         ; XID_Continue # Mn       GUNJALA GONDI VIRAMA
+11D98         ; XID_Continue # Lo       GUNJALA GONDI OM
+11DA0..11DA9  ; XID_Continue # Nd  [10] GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT NINE
+11EE0..11EF2  ; XID_Continue # Lo  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11EF3..11EF4  ; XID_Continue # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11EF5..11EF6  ; XID_Continue # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
+11F00..11F01  ; XID_Continue # Mn   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F02         ; XID_Continue # Lo       KAWI SIGN REPHA
+11F03         ; XID_Continue # Mc       KAWI SIGN VISARGA
+11F04..11F10  ; XID_Continue # Lo  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; XID_Continue # Lo  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11F34..11F35  ; XID_Continue # Mc   [2] KAWI VOWEL SIGN AA..KAWI VOWEL SIGN ALTERNATE AA
+11F36..11F3A  ; XID_Continue # Mn   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F3E..11F3F  ; XID_Continue # Mc   [2] KAWI VOWEL SIGN E..KAWI VOWEL SIGN AI
+11F40         ; XID_Continue # Mn       KAWI VOWEL SIGN EU
+11F41         ; XID_Continue # Mc       KAWI SIGN KILLER
+11F42         ; XID_Continue # Mn       KAWI CONJOINER
+11F50..11F59  ; XID_Continue # Nd  [10] KAWI DIGIT ZERO..KAWI DIGIT NINE
+11FB0         ; XID_Continue # Lo       LISU LETTER YHA
+12000..12399  ; XID_Continue # Lo [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12400..1246E  ; XID_Continue # Nl [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+12480..12543  ; XID_Continue # Lo [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; XID_Continue # Lo  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+13000..1342F  ; XID_Continue # Lo [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13440         ; XID_Continue # Mn       EGYPTIAN HIEROGLYPH MIRROR HORIZONTALLY
+13441..13446  ; XID_Continue # Lo   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+13447..13455  ; XID_Continue # Mn  [15] EGYPTIAN HIEROGLYPH MODIFIER DAMAGED AT TOP START..EGYPTIAN HIEROGLYPH MODIFIER DAMAGED
+14400..14646  ; XID_Continue # Lo [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; XID_Continue # Lo [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; XID_Continue # Lo  [31] MRO LETTER TA..MRO LETTER TEK
+16A60..16A69  ; XID_Continue # Nd  [10] MRO DIGIT ZERO..MRO DIGIT NINE
+16A70..16ABE  ; XID_Continue # Lo  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AC0..16AC9  ; XID_Continue # Nd  [10] TANGSA DIGIT ZERO..TANGSA DIGIT NINE
+16AD0..16AED  ; XID_Continue # Lo  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16AF0..16AF4  ; XID_Continue # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
+16B00..16B2F  ; XID_Continue # Lo  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B30..16B36  ; XID_Continue # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
+16B40..16B43  ; XID_Continue # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16B50..16B59  ; XID_Continue # Nd  [10] PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT NINE
+16B63..16B77  ; XID_Continue # Lo  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; XID_Continue # Lo  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16E40..16E7F  ; XID_Continue # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+16F00..16F4A  ; XID_Continue # Lo  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F4F         ; XID_Continue # Mn       MIAO SIGN CONSONANT MODIFIER BAR
+16F50         ; XID_Continue # Lo       MIAO LETTER NASALIZATION
+16F51..16F87  ; XID_Continue # Mc  [55] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN UI
+16F8F..16F92  ; XID_Continue # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16F93..16F9F  ; XID_Continue # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; XID_Continue # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; XID_Continue # Lm       OLD CHINESE ITERATION MARK
+16FE4         ; XID_Continue # Mn       KHITAN SMALL SCRIPT FILLER
+16FF0..16FF1  ; XID_Continue # Mc   [2] VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
+17000..187F7  ; XID_Continue # Lo [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; XID_Continue # Lo [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; XID_Continue # Lo   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1AFF0..1AFF3  ; XID_Continue # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; XID_Continue # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; XID_Continue # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1B000..1B122  ; XID_Continue # Lo [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; XID_Continue # Lo       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; XID_Continue # Lo   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; XID_Continue # Lo       KATAKANA LETTER SMALL KO
+1B164..1B167  ; XID_Continue # Lo   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; XID_Continue # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; XID_Continue # Lo [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; XID_Continue # Lo  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; XID_Continue # Lo   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; XID_Continue # Lo  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1BC9D..1BC9E  ; XID_Continue # Mn   [2] DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUBLE MARK
+1CF00..1CF2D  ; XID_Continue # Mn  [46] ZNAMENNY COMBINING MARK GORAZDO NIZKO S KRYZHEM ON LEFT..ZNAMENNY COMBINING MARK KRYZH ON LEFT
+1CF30..1CF46  ; XID_Continue # Mn  [23] ZNAMENNY COMBINING TONAL RANGE MARK MRACHNO..ZNAMENNY PRIZNAK MODIFIER ROG
+1D165..1D166  ; XID_Continue # Mc   [2] MUSICAL SYMBOL COMBINING STEM..MUSICAL SYMBOL COMBINING SPRECHGESANG STEM
+1D167..1D169  ; XID_Continue # Mn   [3] MUSICAL SYMBOL COMBINING TREMOLO-1..MUSICAL SYMBOL COMBINING TREMOLO-3
+1D16D..1D172  ; XID_Continue # Mc   [6] MUSICAL SYMBOL COMBINING AUGMENTATION DOT..MUSICAL SYMBOL COMBINING FLAG-5
+1D17B..1D182  ; XID_Continue # Mn   [8] MUSICAL SYMBOL COMBINING ACCENT..MUSICAL SYMBOL COMBINING LOURE
+1D185..1D18B  ; XID_Continue # Mn   [7] MUSICAL SYMBOL COMBINING DOIT..MUSICAL SYMBOL COMBINING TRIPLE TONGUE
+1D1AA..1D1AD  ; XID_Continue # Mn   [4] MUSICAL SYMBOL COMBINING DOWN BOW..MUSICAL SYMBOL COMBINING SNAP PIZZICATO
+1D242..1D244  ; XID_Continue # Mn   [3] COMBINING GREEK MUSICAL TRISEME..COMBINING GREEK MUSICAL PENTASEME
+1D400..1D454  ; XID_Continue # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; XID_Continue # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; XID_Continue # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; XID_Continue # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; XID_Continue # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; XID_Continue # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; XID_Continue # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; XID_Continue # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; XID_Continue # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; XID_Continue # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; XID_Continue # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; XID_Continue # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; XID_Continue # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; XID_Continue # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; XID_Continue # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; XID_Continue # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; XID_Continue # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; XID_Continue # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; XID_Continue # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; XID_Continue # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C2..1D6DA  ; XID_Continue # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6FA  ; XID_Continue # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FC..1D714  ; XID_Continue # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D734  ; XID_Continue # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D736..1D74E  ; XID_Continue # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D76E  ; XID_Continue # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D770..1D788  ; XID_Continue # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D7A8  ; XID_Continue # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7AA..1D7C2  ; XID_Continue # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7CB  ; XID_Continue # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1D7CE..1D7FF  ; XID_Continue # Nd  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
+1DA00..1DA36  ; XID_Continue # Mn  [55] SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING IN
+1DA3B..1DA6C  ; XID_Continue # Mn  [50] SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
+1DA75         ; XID_Continue # Mn       SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
+1DA84         ; XID_Continue # Mn       SIGNWRITING LOCATION HEAD NECK
+1DA9B..1DA9F  ; XID_Continue # Mn   [5] SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL MODIFIER-6
+1DAA1..1DAAF  ; XID_Continue # Mn  [15] SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING ROTATION MODIFIER-16
+1DF00..1DF09  ; XID_Continue # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0A         ; XID_Continue # Lo       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1DF0B..1DF1E  ; XID_Continue # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; XID_Continue # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E000..1E006  ; XID_Continue # Mn   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; XID_Continue # Mn  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; XID_Continue # Mn   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; XID_Continue # Mn   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; XID_Continue # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E030..1E06D  ; XID_Continue # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E08F         ; XID_Continue # Mn       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E100..1E12C  ; XID_Continue # Lo  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E130..1E136  ; XID_Continue # Mn   [7] NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACHUE HMONG TONE-D
+1E137..1E13D  ; XID_Continue # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E140..1E149  ; XID_Continue # Nd  [10] NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG PUACHUE HMONG DIGIT NINE
+1E14E         ; XID_Continue # Lo       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E290..1E2AD  ; XID_Continue # Lo  [30] TOTO LETTER PA..TOTO LETTER A
+1E2AE         ; XID_Continue # Mn       TOTO SIGN RISING TONE
+1E2C0..1E2EB  ; XID_Continue # Lo  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E2EC..1E2EF  ; XID_Continue # Mn   [4] WANCHO TONE TUP..WANCHO TONE KOINI
+1E2F0..1E2F9  ; XID_Continue # Nd  [10] WANCHO DIGIT ZERO..WANCHO DIGIT NINE
+1E4D0..1E4EA  ; XID_Continue # Lo  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E4EB         ; XID_Continue # Lm       NAG MUNDARI SIGN OJOD
+1E4EC..1E4EF  ; XID_Continue # Mn   [4] NAG MUNDARI SIGN MUHOR..NAG MUNDARI SIGN SUTUH
+1E4F0..1E4F9  ; XID_Continue # Nd  [10] NAG MUNDARI DIGIT ZERO..NAG MUNDARI DIGIT NINE
+1E7E0..1E7E6  ; XID_Continue # Lo   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; XID_Continue # Lo   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; XID_Continue # Lo   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; XID_Continue # Lo  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; XID_Continue # Lo [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1E8D0..1E8D6  ; XID_Continue # Mn   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
+1E900..1E943  ; XID_Continue # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1E944..1E94A  ; XID_Continue # Mn   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+1E94B         ; XID_Continue # Lm       ADLAM NASALIZATION MARK
+1E950..1E959  ; XID_Continue # Nd  [10] ADLAM DIGIT ZERO..ADLAM DIGIT NINE
+1EE00..1EE03  ; XID_Continue # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; XID_Continue # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; XID_Continue # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; XID_Continue # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; XID_Continue # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; XID_Continue # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; XID_Continue # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; XID_Continue # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; XID_Continue # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; XID_Continue # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; XID_Continue # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; XID_Continue # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; XID_Continue # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; XID_Continue # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; XID_Continue # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; XID_Continue # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; XID_Continue # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; XID_Continue # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; XID_Continue # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; XID_Continue # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; XID_Continue # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; XID_Continue # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; XID_Continue # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; XID_Continue # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+1FBF0..1FBF9  ; XID_Continue # Nd  [10] SEGMENTED DIGIT ZERO..SEGMENTED DIGIT NINE
+20000..2A6DF  ; XID_Continue # Lo [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; XID_Continue # Lo [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; XID_Continue # Lo [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; XID_Continue # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; XID_Continue # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; XID_Continue # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; XID_Continue # Lo [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; XID_Continue # Lo [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+E0100..E01EF  ; XID_Continue # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+
+# Total code points: 139463
+
+# ================================================
+
+# Derived Property: Default_Ignorable_Code_Point
+#  Generated from
+#    Other_Default_Ignorable_Code_Point
+#  + Cf (Format characters)
+#  + Variation_Selector
+#  - White_Space
+#  - FFF9..FFFB (Interlinear annotation format characters)
+#  - 13430..13440 (Egyptian hieroglyph format characters)
+#  - Prepended_Concatenation_Mark (Exceptional format characters that should be visible)
+
+00AD          ; Default_Ignorable_Code_Point # Cf       SOFT HYPHEN
+034F          ; Default_Ignorable_Code_Point # Mn       COMBINING GRAPHEME JOINER
+061C          ; Default_Ignorable_Code_Point # Cf       ARABIC LETTER MARK
+115F..1160    ; Default_Ignorable_Code_Point # Lo   [2] HANGUL CHOSEONG FILLER..HANGUL JUNGSEONG FILLER
+17B4..17B5    ; Default_Ignorable_Code_Point # Mn   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+180B..180D    ; Default_Ignorable_Code_Point # Mn   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180E          ; Default_Ignorable_Code_Point # Cf       MONGOLIAN VOWEL SEPARATOR
+180F          ; Default_Ignorable_Code_Point # Mn       MONGOLIAN FREE VARIATION SELECTOR FOUR
+200B..200F    ; Default_Ignorable_Code_Point # Cf   [5] ZERO WIDTH SPACE..RIGHT-TO-LEFT MARK
+202A..202E    ; Default_Ignorable_Code_Point # Cf   [5] LEFT-TO-RIGHT EMBEDDING..RIGHT-TO-LEFT OVERRIDE
+2060..2064    ; Default_Ignorable_Code_Point # Cf   [5] WORD JOINER..INVISIBLE PLUS
+2065          ; Default_Ignorable_Code_Point # Cn       <reserved-2065>
+2066..206F    ; Default_Ignorable_Code_Point # Cf  [10] LEFT-TO-RIGHT ISOLATE..NOMINAL DIGIT SHAPES
+3164          ; Default_Ignorable_Code_Point # Lo       HANGUL FILLER
+FE00..FE0F    ; Default_Ignorable_Code_Point # Mn  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FEFF          ; Default_Ignorable_Code_Point # Cf       ZERO WIDTH NO-BREAK SPACE
+FFA0          ; Default_Ignorable_Code_Point # Lo       HALFWIDTH HANGUL FILLER
+FFF0..FFF8    ; Default_Ignorable_Code_Point # Cn   [9] <reserved-FFF0>..<reserved-FFF8>
+1BCA0..1BCA3  ; Default_Ignorable_Code_Point # Cf   [4] SHORTHAND FORMAT LETTER OVERLAP..SHORTHAND FORMAT UP STEP
+1D173..1D17A  ; Default_Ignorable_Code_Point # Cf   [8] MUSICAL SYMBOL BEGIN BEAM..MUSICAL SYMBOL END PHRASE
+E0000         ; Default_Ignorable_Code_Point # Cn       <reserved-E0000>
+E0001         ; Default_Ignorable_Code_Point # Cf       LANGUAGE TAG
+E0002..E001F  ; Default_Ignorable_Code_Point # Cn  [30] <reserved-E0002>..<reserved-E001F>
+E0020..E007F  ; Default_Ignorable_Code_Point # Cf  [96] TAG SPACE..CANCEL TAG
+E0080..E00FF  ; Default_Ignorable_Code_Point # Cn [128] <reserved-E0080>..<reserved-E00FF>
+E0100..E01EF  ; Default_Ignorable_Code_Point # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+E01F0..E0FFF  ; Default_Ignorable_Code_Point # Cn [3600] <reserved-E01F0>..<reserved-E0FFF>
+
+# Total code points: 4174
+
+# ================================================
+
+# Derived Property: Grapheme_Extend
+#  Generated from: Me + Mn + Other_Grapheme_Extend
+#  Note: depending on an application's interpretation of Co (private use),
+#  they may be either in Grapheme_Base, or in Grapheme_Extend, or in neither.
+
+0300..036F    ; Grapheme_Extend # Mn [112] COMBINING GRAVE ACCENT..COMBINING LATIN SMALL LETTER X
+0483..0487    ; Grapheme_Extend # Mn   [5] COMBINING CYRILLIC TITLO..COMBINING CYRILLIC POKRYTIE
+0488..0489    ; Grapheme_Extend # Me   [2] COMBINING CYRILLIC HUNDRED THOUSANDS SIGN..COMBINING CYRILLIC MILLIONS SIGN
+0591..05BD    ; Grapheme_Extend # Mn  [45] HEBREW ACCENT ETNAHTA..HEBREW POINT METEG
+05BF          ; Grapheme_Extend # Mn       HEBREW POINT RAFE
+05C1..05C2    ; Grapheme_Extend # Mn   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; Grapheme_Extend # Mn   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; Grapheme_Extend # Mn       HEBREW POINT QAMATS QATAN
+0610..061A    ; Grapheme_Extend # Mn  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+064B..065F    ; Grapheme_Extend # Mn  [21] ARABIC FATHATAN..ARABIC WAVY HAMZA BELOW
+0670          ; Grapheme_Extend # Mn       ARABIC LETTER SUPERSCRIPT ALEF
+06D6..06DC    ; Grapheme_Extend # Mn   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06DF..06E4    ; Grapheme_Extend # Mn   [6] ARABIC SMALL HIGH ROUNDED ZERO..ARABIC SMALL HIGH MADDA
+06E7..06E8    ; Grapheme_Extend # Mn   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06EA..06ED    ; Grapheme_Extend # Mn   [4] ARABIC EMPTY CENTRE LOW STOP..ARABIC SMALL LOW MEEM
+0711          ; Grapheme_Extend # Mn       SYRIAC LETTER SUPERSCRIPT ALAPH
+0730..074A    ; Grapheme_Extend # Mn  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
+07A6..07B0    ; Grapheme_Extend # Mn  [11] THAANA ABAFILI..THAANA SUKUN
+07EB..07F3    ; Grapheme_Extend # Mn   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07FD          ; Grapheme_Extend # Mn       NKO DANTAYALAN
+0816..0819    ; Grapheme_Extend # Mn   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
+081B..0823    ; Grapheme_Extend # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0825..0827    ; Grapheme_Extend # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0829..082D    ; Grapheme_Extend # Mn   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
+0859..085B    ; Grapheme_Extend # Mn   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
+0898..089F    ; Grapheme_Extend # Mn   [8] ARABIC SMALL HIGH WORD AL-JUZ..ARABIC HALF MADDA OVER MADDA
+08CA..08E1    ; Grapheme_Extend # Mn  [24] ARABIC SMALL HIGH FARSI YEH..ARABIC SMALL HIGH SIGN SAFHA
+08E3..0902    ; Grapheme_Extend # Mn  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
+093A          ; Grapheme_Extend # Mn       DEVANAGARI VOWEL SIGN OE
+093C          ; Grapheme_Extend # Mn       DEVANAGARI SIGN NUKTA
+0941..0948    ; Grapheme_Extend # Mn   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+094D          ; Grapheme_Extend # Mn       DEVANAGARI SIGN VIRAMA
+0951..0957    ; Grapheme_Extend # Mn   [7] DEVANAGARI STRESS SIGN UDATTA..DEVANAGARI VOWEL SIGN UUE
+0962..0963    ; Grapheme_Extend # Mn   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0981          ; Grapheme_Extend # Mn       BENGALI SIGN CANDRABINDU
+09BC          ; Grapheme_Extend # Mn       BENGALI SIGN NUKTA
+09BE          ; Grapheme_Extend # Mc       BENGALI VOWEL SIGN AA
+09C1..09C4    ; Grapheme_Extend # Mn   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09CD          ; Grapheme_Extend # Mn       BENGALI SIGN VIRAMA
+09D7          ; Grapheme_Extend # Mc       BENGALI AU LENGTH MARK
+09E2..09E3    ; Grapheme_Extend # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09FE          ; Grapheme_Extend # Mn       BENGALI SANDHI MARK
+0A01..0A02    ; Grapheme_Extend # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A3C          ; Grapheme_Extend # Mn       GURMUKHI SIGN NUKTA
+0A41..0A42    ; Grapheme_Extend # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; Grapheme_Extend # Mn   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4D    ; Grapheme_Extend # Mn   [3] GURMUKHI VOWEL SIGN OO..GURMUKHI SIGN VIRAMA
+0A51          ; Grapheme_Extend # Mn       GURMUKHI SIGN UDAAT
+0A70..0A71    ; Grapheme_Extend # Mn   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A75          ; Grapheme_Extend # Mn       GURMUKHI SIGN YAKASH
+0A81..0A82    ; Grapheme_Extend # Mn   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0ABC          ; Grapheme_Extend # Mn       GUJARATI SIGN NUKTA
+0AC1..0AC5    ; Grapheme_Extend # Mn   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; Grapheme_Extend # Mn   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0ACD          ; Grapheme_Extend # Mn       GUJARATI SIGN VIRAMA
+0AE2..0AE3    ; Grapheme_Extend # Mn   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AFA..0AFF    ; Grapheme_Extend # Mn   [6] GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE NUKTA ABOVE
+0B01          ; Grapheme_Extend # Mn       ORIYA SIGN CANDRABINDU
+0B3C          ; Grapheme_Extend # Mn       ORIYA SIGN NUKTA
+0B3E          ; Grapheme_Extend # Mc       ORIYA VOWEL SIGN AA
+0B3F          ; Grapheme_Extend # Mn       ORIYA VOWEL SIGN I
+0B41..0B44    ; Grapheme_Extend # Mn   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B4D          ; Grapheme_Extend # Mn       ORIYA SIGN VIRAMA
+0B55..0B56    ; Grapheme_Extend # Mn   [2] ORIYA SIGN OVERLINE..ORIYA AI LENGTH MARK
+0B57          ; Grapheme_Extend # Mc       ORIYA AU LENGTH MARK
+0B62..0B63    ; Grapheme_Extend # Mn   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B82          ; Grapheme_Extend # Mn       TAMIL SIGN ANUSVARA
+0BBE          ; Grapheme_Extend # Mc       TAMIL VOWEL SIGN AA
+0BC0          ; Grapheme_Extend # Mn       TAMIL VOWEL SIGN II
+0BCD          ; Grapheme_Extend # Mn       TAMIL SIGN VIRAMA
+0BD7          ; Grapheme_Extend # Mc       TAMIL AU LENGTH MARK
+0C00          ; Grapheme_Extend # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C04          ; Grapheme_Extend # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C3C          ; Grapheme_Extend # Mn       TELUGU SIGN NUKTA
+0C3E..0C40    ; Grapheme_Extend # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C46..0C48    ; Grapheme_Extend # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4D    ; Grapheme_Extend # Mn   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
+0C55..0C56    ; Grapheme_Extend # Mn   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C62..0C63    ; Grapheme_Extend # Mn   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C81          ; Grapheme_Extend # Mn       KANNADA SIGN CANDRABINDU
+0CBC          ; Grapheme_Extend # Mn       KANNADA SIGN NUKTA
+0CBF          ; Grapheme_Extend # Mn       KANNADA VOWEL SIGN I
+0CC2          ; Grapheme_Extend # Mc       KANNADA VOWEL SIGN UU
+0CC6          ; Grapheme_Extend # Mn       KANNADA VOWEL SIGN E
+0CCC..0CCD    ; Grapheme_Extend # Mn   [2] KANNADA VOWEL SIGN AU..KANNADA SIGN VIRAMA
+0CD5..0CD6    ; Grapheme_Extend # Mc   [2] KANNADA LENGTH MARK..KANNADA AI LENGTH MARK
+0CE2..0CE3    ; Grapheme_Extend # Mn   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0D00..0D01    ; Grapheme_Extend # Mn   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D3B..0D3C    ; Grapheme_Extend # Mn   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D3E          ; Grapheme_Extend # Mc       MALAYALAM VOWEL SIGN AA
+0D41..0D44    ; Grapheme_Extend # Mn   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D4D          ; Grapheme_Extend # Mn       MALAYALAM SIGN VIRAMA
+0D57          ; Grapheme_Extend # Mc       MALAYALAM AU LENGTH MARK
+0D62..0D63    ; Grapheme_Extend # Mn   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D81          ; Grapheme_Extend # Mn       SINHALA SIGN CANDRABINDU
+0DCA          ; Grapheme_Extend # Mn       SINHALA SIGN AL-LAKUNA
+0DCF          ; Grapheme_Extend # Mc       SINHALA VOWEL SIGN AELA-PILLA
+0DD2..0DD4    ; Grapheme_Extend # Mn   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; Grapheme_Extend # Mn       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0DDF          ; Grapheme_Extend # Mc       SINHALA VOWEL SIGN GAYANUKITTA
+0E31          ; Grapheme_Extend # Mn       THAI CHARACTER MAI HAN-AKAT
+0E34..0E3A    ; Grapheme_Extend # Mn   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E47..0E4E    ; Grapheme_Extend # Mn   [8] THAI CHARACTER MAITAIKHU..THAI CHARACTER YAMAKKAN
+0EB1          ; Grapheme_Extend # Mn       LAO VOWEL SIGN MAI KAN
+0EB4..0EBC    ; Grapheme_Extend # Mn   [9] LAO VOWEL SIGN I..LAO SEMIVOWEL SIGN LO
+0EC8..0ECE    ; Grapheme_Extend # Mn   [7] LAO TONE MAI EK..LAO YAMAKKAN
+0F18..0F19    ; Grapheme_Extend # Mn   [2] TIBETAN ASTROLOGICAL SIGN -KHYUD PA..TIBETAN ASTROLOGICAL SIGN SDONG TSHUGS
+0F35          ; Grapheme_Extend # Mn       TIBETAN MARK NGAS BZUNG NYI ZLA
+0F37          ; Grapheme_Extend # Mn       TIBETAN MARK NGAS BZUNG SGOR RTAGS
+0F39          ; Grapheme_Extend # Mn       TIBETAN MARK TSA -PHRU
+0F71..0F7E    ; Grapheme_Extend # Mn  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F80..0F84    ; Grapheme_Extend # Mn   [5] TIBETAN VOWEL SIGN REVERSED I..TIBETAN MARK HALANTA
+0F86..0F87    ; Grapheme_Extend # Mn   [2] TIBETAN SIGN LCI RTAGS..TIBETAN SIGN YANG RTAGS
+0F8D..0F97    ; Grapheme_Extend # Mn  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; Grapheme_Extend # Mn  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+0FC6          ; Grapheme_Extend # Mn       TIBETAN SYMBOL PADMA GDAN
+102D..1030    ; Grapheme_Extend # Mn   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1032..1037    ; Grapheme_Extend # Mn   [6] MYANMAR VOWEL SIGN AI..MYANMAR SIGN DOT BELOW
+1039..103A    ; Grapheme_Extend # Mn   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+103D..103E    ; Grapheme_Extend # Mn   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+1058..1059    ; Grapheme_Extend # Mn   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105E..1060    ; Grapheme_Extend # Mn   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1071..1074    ; Grapheme_Extend # Mn   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1082          ; Grapheme_Extend # Mn       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1085..1086    ; Grapheme_Extend # Mn   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+108D          ; Grapheme_Extend # Mn       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+109D          ; Grapheme_Extend # Mn       MYANMAR VOWEL SIGN AITON AI
+135D..135F    ; Grapheme_Extend # Mn   [3] ETHIOPIC COMBINING GEMINATION AND VOWEL LENGTH MARK..ETHIOPIC COMBINING GEMINATION MARK
+1712..1714    ; Grapheme_Extend # Mn   [3] TAGALOG VOWEL SIGN I..TAGALOG SIGN VIRAMA
+1732..1733    ; Grapheme_Extend # Mn   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1752..1753    ; Grapheme_Extend # Mn   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1772..1773    ; Grapheme_Extend # Mn   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+17B4..17B5    ; Grapheme_Extend # Mn   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+17B7..17BD    ; Grapheme_Extend # Mn   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17C6          ; Grapheme_Extend # Mn       KHMER SIGN NIKAHIT
+17C9..17D3    ; Grapheme_Extend # Mn  [11] KHMER SIGN MUUSIKATOAN..KHMER SIGN BATHAMASAT
+17DD          ; Grapheme_Extend # Mn       KHMER SIGN ATTHACAN
+180B..180D    ; Grapheme_Extend # Mn   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180F          ; Grapheme_Extend # Mn       MONGOLIAN FREE VARIATION SELECTOR FOUR
+1885..1886    ; Grapheme_Extend # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+18A9          ; Grapheme_Extend # Mn       MONGOLIAN LETTER ALI GALI DAGALGA
+1920..1922    ; Grapheme_Extend # Mn   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1927..1928    ; Grapheme_Extend # Mn   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1932          ; Grapheme_Extend # Mn       LIMBU SMALL LETTER ANUSVARA
+1939..193B    ; Grapheme_Extend # Mn   [3] LIMBU SIGN MUKPHRENG..LIMBU SIGN SA-I
+1A17..1A18    ; Grapheme_Extend # Mn   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A1B          ; Grapheme_Extend # Mn       BUGINESE VOWEL SIGN AE
+1A56          ; Grapheme_Extend # Mn       TAI THAM CONSONANT SIGN MEDIAL LA
+1A58..1A5E    ; Grapheme_Extend # Mn   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A60          ; Grapheme_Extend # Mn       TAI THAM SIGN SAKOT
+1A62          ; Grapheme_Extend # Mn       TAI THAM VOWEL SIGN MAI SAT
+1A65..1A6C    ; Grapheme_Extend # Mn   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A73..1A7C    ; Grapheme_Extend # Mn  [10] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN KHUEN-LUE KARAN
+1A7F          ; Grapheme_Extend # Mn       TAI THAM COMBINING CRYPTOGRAMMIC DOT
+1AB0..1ABD    ; Grapheme_Extend # Mn  [14] COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBINING PARENTHESES BELOW
+1ABE          ; Grapheme_Extend # Me       COMBINING PARENTHESES OVERLAY
+1ABF..1ACE    ; Grapheme_Extend # Mn  [16] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; Grapheme_Extend # Mn   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B34          ; Grapheme_Extend # Mn       BALINESE SIGN REREKAN
+1B35          ; Grapheme_Extend # Mc       BALINESE VOWEL SIGN TEDUNG
+1B36..1B3A    ; Grapheme_Extend # Mn   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3C          ; Grapheme_Extend # Mn       BALINESE VOWEL SIGN LA LENGA
+1B42          ; Grapheme_Extend # Mn       BALINESE VOWEL SIGN PEPET
+1B6B..1B73    ; Grapheme_Extend # Mn   [9] BALINESE MUSICAL SYMBOL COMBINING TEGEH..BALINESE MUSICAL SYMBOL COMBINING GONG
+1B80..1B81    ; Grapheme_Extend # Mn   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1BA2..1BA5    ; Grapheme_Extend # Mn   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA8..1BA9    ; Grapheme_Extend # Mn   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAB..1BAD    ; Grapheme_Extend # Mn   [3] SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BE6          ; Grapheme_Extend # Mn       BATAK SIGN TOMPI
+1BE8..1BE9    ; Grapheme_Extend # Mn   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BED          ; Grapheme_Extend # Mn       BATAK VOWEL SIGN KARO O
+1BEF..1BF1    ; Grapheme_Extend # Mn   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1C2C..1C33    ; Grapheme_Extend # Mn   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C36..1C37    ; Grapheme_Extend # Mn   [2] LEPCHA SIGN RAN..LEPCHA SIGN NUKTA
+1CD0..1CD2    ; Grapheme_Extend # Mn   [3] VEDIC TONE KARSHANA..VEDIC TONE PRENKHA
+1CD4..1CE0    ; Grapheme_Extend # Mn  [13] VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC TONE RIGVEDIC KASHMIRI INDEPENDENT SVARITA
+1CE2..1CE8    ; Grapheme_Extend # Mn   [7] VEDIC SIGN VISARGA SVARITA..VEDIC SIGN VISARGA ANUDATTA WITH TAIL
+1CED          ; Grapheme_Extend # Mn       VEDIC SIGN TIRYAK
+1CF4          ; Grapheme_Extend # Mn       VEDIC TONE CANDRA ABOVE
+1CF8..1CF9    ; Grapheme_Extend # Mn   [2] VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING ABOVE
+1DC0..1DFF    ; Grapheme_Extend # Mn  [64] COMBINING DOTTED GRAVE ACCENT..COMBINING RIGHT ARROWHEAD AND DOWN ARROWHEAD BELOW
+200C          ; Grapheme_Extend # Cf       ZERO WIDTH NON-JOINER
+20D0..20DC    ; Grapheme_Extend # Mn  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20DD..20E0    ; Grapheme_Extend # Me   [4] COMBINING ENCLOSING CIRCLE..COMBINING ENCLOSING CIRCLE BACKSLASH
+20E1          ; Grapheme_Extend # Mn       COMBINING LEFT RIGHT ARROW ABOVE
+20E2..20E4    ; Grapheme_Extend # Me   [3] COMBINING ENCLOSING SCREEN..COMBINING ENCLOSING UPWARD POINTING TRIANGLE
+20E5..20F0    ; Grapheme_Extend # Mn  [12] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING ASTERISK ABOVE
+2CEF..2CF1    ; Grapheme_Extend # Mn   [3] COPTIC COMBINING NI ABOVE..COPTIC COMBINING SPIRITUS LENIS
+2D7F          ; Grapheme_Extend # Mn       TIFINAGH CONSONANT JOINER
+2DE0..2DFF    ; Grapheme_Extend # Mn  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+302A..302D    ; Grapheme_Extend # Mn   [4] IDEOGRAPHIC LEVEL TONE MARK..IDEOGRAPHIC ENTERING TONE MARK
+302E..302F    ; Grapheme_Extend # Mc   [2] HANGUL SINGLE DOT TONE MARK..HANGUL DOUBLE DOT TONE MARK
+3099..309A    ; Grapheme_Extend # Mn   [2] COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK..COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+A66F          ; Grapheme_Extend # Mn       COMBINING CYRILLIC VZMET
+A670..A672    ; Grapheme_Extend # Me   [3] COMBINING CYRILLIC TEN MILLIONS SIGN..COMBINING CYRILLIC THOUSAND MILLIONS SIGN
+A674..A67D    ; Grapheme_Extend # Mn  [10] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC PAYEROK
+A69E..A69F    ; Grapheme_Extend # Mn   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6F0..A6F1    ; Grapheme_Extend # Mn   [2] BAMUM COMBINING MARK KOQNDON..BAMUM COMBINING MARK TUKWENTIS
+A802          ; Grapheme_Extend # Mn       SYLOTI NAGRI SIGN DVISVARA
+A806          ; Grapheme_Extend # Mn       SYLOTI NAGRI SIGN HASANTA
+A80B          ; Grapheme_Extend # Mn       SYLOTI NAGRI SIGN ANUSVARA
+A825..A826    ; Grapheme_Extend # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A82C          ; Grapheme_Extend # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A8C4..A8C5    ; Grapheme_Extend # Mn   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
+A8E0..A8F1    ; Grapheme_Extend # Mn  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8FF          ; Grapheme_Extend # Mn       DEVANAGARI VOWEL SIGN AY
+A926..A92D    ; Grapheme_Extend # Mn   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
+A947..A951    ; Grapheme_Extend # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A980..A982    ; Grapheme_Extend # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A9B3          ; Grapheme_Extend # Mn       JAVANESE SIGN CECAK TELU
+A9B6..A9B9    ; Grapheme_Extend # Mn   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BC..A9BD    ; Grapheme_Extend # Mn   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9E5          ; Grapheme_Extend # Mn       MYANMAR SIGN SHAN SAW
+AA29..AA2E    ; Grapheme_Extend # Mn   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA31..AA32    ; Grapheme_Extend # Mn   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA35..AA36    ; Grapheme_Extend # Mn   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA43          ; Grapheme_Extend # Mn       CHAM CONSONANT SIGN FINAL NG
+AA4C          ; Grapheme_Extend # Mn       CHAM CONSONANT SIGN FINAL M
+AA7C          ; Grapheme_Extend # Mn       MYANMAR SIGN TAI LAING TONE-2
+AAB0          ; Grapheme_Extend # Mn       TAI VIET MAI KANG
+AAB2..AAB4    ; Grapheme_Extend # Mn   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB7..AAB8    ; Grapheme_Extend # Mn   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AABE..AABF    ; Grapheme_Extend # Mn   [2] TAI VIET VOWEL AM..TAI VIET TONE MAI EK
+AAC1          ; Grapheme_Extend # Mn       TAI VIET TONE MAI THO
+AAEC..AAED    ; Grapheme_Extend # Mn   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAF6          ; Grapheme_Extend # Mn       MEETEI MAYEK VIRAMA
+ABE5          ; Grapheme_Extend # Mn       MEETEI MAYEK VOWEL SIGN ANAP
+ABE8          ; Grapheme_Extend # Mn       MEETEI MAYEK VOWEL SIGN UNAP
+ABED          ; Grapheme_Extend # Mn       MEETEI MAYEK APUN IYEK
+FB1E          ; Grapheme_Extend # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
+FE00..FE0F    ; Grapheme_Extend # Mn  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FE20..FE2F    ; Grapheme_Extend # Mn  [16] COMBINING LIGATURE LEFT HALF..COMBINING CYRILLIC TITLO RIGHT HALF
+FF9E..FF9F    ; Grapheme_Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+101FD         ; Grapheme_Extend # Mn       PHAISTOS DISC SIGN COMBINING OBLIQUE STROKE
+102E0         ; Grapheme_Extend # Mn       COPTIC EPACT THOUSANDS MARK
+10376..1037A  ; Grapheme_Extend # Mn   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10A01..10A03  ; Grapheme_Extend # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; Grapheme_Extend # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; Grapheme_Extend # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A38..10A3A  ; Grapheme_Extend # Mn   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
+10A3F         ; Grapheme_Extend # Mn       KHAROSHTHI VIRAMA
+10AE5..10AE6  ; Grapheme_Extend # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10D24..10D27  ; Grapheme_Extend # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10EAB..10EAC  ; Grapheme_Extend # Mn   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EFD..10EFF  ; Grapheme_Extend # Mn   [3] ARABIC SMALL LOW WORD SAKTA..ARABIC SMALL LOW WORD MADDA
+10F46..10F50  ; Grapheme_Extend # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
+10F82..10F85  ; Grapheme_Extend # Mn   [4] OLD UYGHUR COMBINING DOT ABOVE..OLD UYGHUR COMBINING TWO DOTS BELOW
+11001         ; Grapheme_Extend # Mn       BRAHMI SIGN ANUSVARA
+11038..11046  ; Grapheme_Extend # Mn  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
+11070         ; Grapheme_Extend # Mn       BRAHMI SIGN OLD TAMIL VIRAMA
+11073..11074  ; Grapheme_Extend # Mn   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+1107F..11081  ; Grapheme_Extend # Mn   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
+110B3..110B6  ; Grapheme_Extend # Mn   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B9..110BA  ; Grapheme_Extend # Mn   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
+110C2         ; Grapheme_Extend # Mn       KAITHI VOWEL SIGN VOCALIC R
+11100..11102  ; Grapheme_Extend # Mn   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11127..1112B  ; Grapheme_Extend # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112D..11134  ; Grapheme_Extend # Mn   [8] CHAKMA VOWEL SIGN AI..CHAKMA MAAYYAA
+11173         ; Grapheme_Extend # Mn       MAHAJANI SIGN NUKTA
+11180..11181  ; Grapheme_Extend # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+111B6..111BE  ; Grapheme_Extend # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111C9..111CC  ; Grapheme_Extend # Mn   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
+111CF         ; Grapheme_Extend # Mn       SHARADA SIGN INVERTED CANDRABINDU
+1122F..11231  ; Grapheme_Extend # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11234         ; Grapheme_Extend # Mn       KHOJKI SIGN ANUSVARA
+11236..11237  ; Grapheme_Extend # Mn   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
+1123E         ; Grapheme_Extend # Mn       KHOJKI SIGN SUKUN
+11241         ; Grapheme_Extend # Mn       KHOJKI VOWEL SIGN VOCALIC R
+112DF         ; Grapheme_Extend # Mn       KHUDAWADI SIGN ANUSVARA
+112E3..112EA  ; Grapheme_Extend # Mn   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
+11300..11301  ; Grapheme_Extend # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+1133B..1133C  ; Grapheme_Extend # Mn   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
+1133E         ; Grapheme_Extend # Mc       GRANTHA VOWEL SIGN AA
+11340         ; Grapheme_Extend # Mn       GRANTHA VOWEL SIGN II
+11357         ; Grapheme_Extend # Mc       GRANTHA AU LENGTH MARK
+11366..1136C  ; Grapheme_Extend # Mn   [7] COMBINING GRANTHA DIGIT ZERO..COMBINING GRANTHA DIGIT SIX
+11370..11374  ; Grapheme_Extend # Mn   [5] COMBINING GRANTHA LETTER A..COMBINING GRANTHA LETTER PA
+11438..1143F  ; Grapheme_Extend # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11442..11444  ; Grapheme_Extend # Mn   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
+11446         ; Grapheme_Extend # Mn       NEWA SIGN NUKTA
+1145E         ; Grapheme_Extend # Mn       NEWA SANDHI MARK
+114B0         ; Grapheme_Extend # Mc       TIRHUTA VOWEL SIGN AA
+114B3..114B8  ; Grapheme_Extend # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114BA         ; Grapheme_Extend # Mn       TIRHUTA VOWEL SIGN SHORT E
+114BD         ; Grapheme_Extend # Mc       TIRHUTA VOWEL SIGN SHORT O
+114BF..114C0  ; Grapheme_Extend # Mn   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C2..114C3  ; Grapheme_Extend # Mn   [2] TIRHUTA SIGN VIRAMA..TIRHUTA SIGN NUKTA
+115AF         ; Grapheme_Extend # Mc       SIDDHAM VOWEL SIGN AA
+115B2..115B5  ; Grapheme_Extend # Mn   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115BC..115BD  ; Grapheme_Extend # Mn   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BF..115C0  ; Grapheme_Extend # Mn   [2] SIDDHAM SIGN VIRAMA..SIDDHAM SIGN NUKTA
+115DC..115DD  ; Grapheme_Extend # Mn   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11633..1163A  ; Grapheme_Extend # Mn   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163D         ; Grapheme_Extend # Mn       MODI SIGN ANUSVARA
+1163F..11640  ; Grapheme_Extend # Mn   [2] MODI SIGN VIRAMA..MODI SIGN ARDHACANDRA
+116AB         ; Grapheme_Extend # Mn       TAKRI SIGN ANUSVARA
+116AD         ; Grapheme_Extend # Mn       TAKRI VOWEL SIGN AA
+116B0..116B5  ; Grapheme_Extend # Mn   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B7         ; Grapheme_Extend # Mn       TAKRI SIGN NUKTA
+1171D..1171F  ; Grapheme_Extend # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11722..11725  ; Grapheme_Extend # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11727..1172B  ; Grapheme_Extend # Mn   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
+1182F..11837  ; Grapheme_Extend # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11839..1183A  ; Grapheme_Extend # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+11930         ; Grapheme_Extend # Mc       DIVES AKURU VOWEL SIGN AA
+1193B..1193C  ; Grapheme_Extend # Mn   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193E         ; Grapheme_Extend # Mn       DIVES AKURU VIRAMA
+11943         ; Grapheme_Extend # Mn       DIVES AKURU SIGN NUKTA
+119D4..119D7  ; Grapheme_Extend # Mn   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; Grapheme_Extend # Mn   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119E0         ; Grapheme_Extend # Mn       NANDINAGARI SIGN VIRAMA
+11A01..11A0A  ; Grapheme_Extend # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A33..11A38  ; Grapheme_Extend # Mn   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
+11A3B..11A3E  ; Grapheme_Extend # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A47         ; Grapheme_Extend # Mn       ZANABAZAR SQUARE SUBJOINER
+11A51..11A56  ; Grapheme_Extend # Mn   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A59..11A5B  ; Grapheme_Extend # Mn   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A8A..11A96  ; Grapheme_Extend # Mn  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A98..11A99  ; Grapheme_Extend # Mn   [2] SOYOMBO GEMINATION MARK..SOYOMBO SUBJOINER
+11C30..11C36  ; Grapheme_Extend # Mn   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; Grapheme_Extend # Mn   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3F         ; Grapheme_Extend # Mn       BHAIKSUKI SIGN VIRAMA
+11C92..11CA7  ; Grapheme_Extend # Mn  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CAA..11CB0  ; Grapheme_Extend # Mn   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB2..11CB3  ; Grapheme_Extend # Mn   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB5..11CB6  ; Grapheme_Extend # Mn   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D31..11D36  ; Grapheme_Extend # Mn   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; Grapheme_Extend # Mn       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; Grapheme_Extend # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D45  ; Grapheme_Extend # Mn   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
+11D47         ; Grapheme_Extend # Mn       MASARAM GONDI RA-KARA
+11D90..11D91  ; Grapheme_Extend # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D95         ; Grapheme_Extend # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D97         ; Grapheme_Extend # Mn       GUNJALA GONDI VIRAMA
+11EF3..11EF4  ; Grapheme_Extend # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11F00..11F01  ; Grapheme_Extend # Mn   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F36..11F3A  ; Grapheme_Extend # Mn   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F40         ; Grapheme_Extend # Mn       KAWI VOWEL SIGN EU
+11F42         ; Grapheme_Extend # Mn       KAWI CONJOINER
+13440         ; Grapheme_Extend # Mn       EGYPTIAN HIEROGLYPH MIRROR HORIZONTALLY
+13447..13455  ; Grapheme_Extend # Mn  [15] EGYPTIAN HIEROGLYPH MODIFIER DAMAGED AT TOP START..EGYPTIAN HIEROGLYPH MODIFIER DAMAGED
+16AF0..16AF4  ; Grapheme_Extend # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
+16B30..16B36  ; Grapheme_Extend # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
+16F4F         ; Grapheme_Extend # Mn       MIAO SIGN CONSONANT MODIFIER BAR
+16F8F..16F92  ; Grapheme_Extend # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16FE4         ; Grapheme_Extend # Mn       KHITAN SMALL SCRIPT FILLER
+1BC9D..1BC9E  ; Grapheme_Extend # Mn   [2] DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUBLE MARK
+1CF00..1CF2D  ; Grapheme_Extend # Mn  [46] ZNAMENNY COMBINING MARK GORAZDO NIZKO S KRYZHEM ON LEFT..ZNAMENNY COMBINING MARK KRYZH ON LEFT
+1CF30..1CF46  ; Grapheme_Extend # Mn  [23] ZNAMENNY COMBINING TONAL RANGE MARK MRACHNO..ZNAMENNY PRIZNAK MODIFIER ROG
+1D165         ; Grapheme_Extend # Mc       MUSICAL SYMBOL COMBINING STEM
+1D167..1D169  ; Grapheme_Extend # Mn   [3] MUSICAL SYMBOL COMBINING TREMOLO-1..MUSICAL SYMBOL COMBINING TREMOLO-3
+1D16E..1D172  ; Grapheme_Extend # Mc   [5] MUSICAL SYMBOL COMBINING FLAG-1..MUSICAL SYMBOL COMBINING FLAG-5
+1D17B..1D182  ; Grapheme_Extend # Mn   [8] MUSICAL SYMBOL COMBINING ACCENT..MUSICAL SYMBOL COMBINING LOURE
+1D185..1D18B  ; Grapheme_Extend # Mn   [7] MUSICAL SYMBOL COMBINING DOIT..MUSICAL SYMBOL COMBINING TRIPLE TONGUE
+1D1AA..1D1AD  ; Grapheme_Extend # Mn   [4] MUSICAL SYMBOL COMBINING DOWN BOW..MUSICAL SYMBOL COMBINING SNAP PIZZICATO
+1D242..1D244  ; Grapheme_Extend # Mn   [3] COMBINING GREEK MUSICAL TRISEME..COMBINING GREEK MUSICAL PENTASEME
+1DA00..1DA36  ; Grapheme_Extend # Mn  [55] SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING IN
+1DA3B..1DA6C  ; Grapheme_Extend # Mn  [50] SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
+1DA75         ; Grapheme_Extend # Mn       SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
+1DA84         ; Grapheme_Extend # Mn       SIGNWRITING LOCATION HEAD NECK
+1DA9B..1DA9F  ; Grapheme_Extend # Mn   [5] SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL MODIFIER-6
+1DAA1..1DAAF  ; Grapheme_Extend # Mn  [15] SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING ROTATION MODIFIER-16
+1E000..1E006  ; Grapheme_Extend # Mn   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; Grapheme_Extend # Mn  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; Grapheme_Extend # Mn   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; Grapheme_Extend # Mn   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; Grapheme_Extend # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E08F         ; Grapheme_Extend # Mn       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E130..1E136  ; Grapheme_Extend # Mn   [7] NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACHUE HMONG TONE-D
+1E2AE         ; Grapheme_Extend # Mn       TOTO SIGN RISING TONE
+1E2EC..1E2EF  ; Grapheme_Extend # Mn   [4] WANCHO TONE TUP..WANCHO TONE KOINI
+1E4EC..1E4EF  ; Grapheme_Extend # Mn   [4] NAG MUNDARI SIGN MUHOR..NAG MUNDARI SIGN SUTUH
+1E8D0..1E8D6  ; Grapheme_Extend # Mn   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
+1E944..1E94A  ; Grapheme_Extend # Mn   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+E0020..E007F  ; Grapheme_Extend # Cf  [96] TAG SPACE..CANCEL TAG
+E0100..E01EF  ; Grapheme_Extend # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+
+# Total code points: 2125
+
+# ================================================
+
+# Derived Property: Grapheme_Base
+#  Generated from: [0..10FFFF] - Cc - Cf - Cs - Co - Cn - Zl - Zp - Grapheme_Extend
+#  Note: depending on an application's interpretation of Co (private use),
+#  they may be either in Grapheme_Base, or in Grapheme_Extend, or in neither.
+
+0020          ; Grapheme_Base # Zs       SPACE
+0021..0023    ; Grapheme_Base # Po   [3] EXCLAMATION MARK..NUMBER SIGN
+0024          ; Grapheme_Base # Sc       DOLLAR SIGN
+0025..0027    ; Grapheme_Base # Po   [3] PERCENT SIGN..APOSTROPHE
+0028          ; Grapheme_Base # Ps       LEFT PARENTHESIS
+0029          ; Grapheme_Base # Pe       RIGHT PARENTHESIS
+002A          ; Grapheme_Base # Po       ASTERISK
+002B          ; Grapheme_Base # Sm       PLUS SIGN
+002C          ; Grapheme_Base # Po       COMMA
+002D          ; Grapheme_Base # Pd       HYPHEN-MINUS
+002E..002F    ; Grapheme_Base # Po   [2] FULL STOP..SOLIDUS
+0030..0039    ; Grapheme_Base # Nd  [10] DIGIT ZERO..DIGIT NINE
+003A..003B    ; Grapheme_Base # Po   [2] COLON..SEMICOLON
+003C..003E    ; Grapheme_Base # Sm   [3] LESS-THAN SIGN..GREATER-THAN SIGN
+003F..0040    ; Grapheme_Base # Po   [2] QUESTION MARK..COMMERCIAL AT
+0041..005A    ; Grapheme_Base # L&  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+005B          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET
+005C          ; Grapheme_Base # Po       REVERSE SOLIDUS
+005D          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET
+005E          ; Grapheme_Base # Sk       CIRCUMFLEX ACCENT
+005F          ; Grapheme_Base # Pc       LOW LINE
+0060          ; Grapheme_Base # Sk       GRAVE ACCENT
+0061..007A    ; Grapheme_Base # L&  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+007B          ; Grapheme_Base # Ps       LEFT CURLY BRACKET
+007C          ; Grapheme_Base # Sm       VERTICAL LINE
+007D          ; Grapheme_Base # Pe       RIGHT CURLY BRACKET
+007E          ; Grapheme_Base # Sm       TILDE
+00A0          ; Grapheme_Base # Zs       NO-BREAK SPACE
+00A1          ; Grapheme_Base # Po       INVERTED EXCLAMATION MARK
+00A2..00A5    ; Grapheme_Base # Sc   [4] CENT SIGN..YEN SIGN
+00A6          ; Grapheme_Base # So       BROKEN BAR
+00A7          ; Grapheme_Base # Po       SECTION SIGN
+00A8          ; Grapheme_Base # Sk       DIAERESIS
+00A9          ; Grapheme_Base # So       COPYRIGHT SIGN
+00AA          ; Grapheme_Base # Lo       FEMININE ORDINAL INDICATOR
+00AB          ; Grapheme_Base # Pi       LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
+00AC          ; Grapheme_Base # Sm       NOT SIGN
+00AE          ; Grapheme_Base # So       REGISTERED SIGN
+00AF          ; Grapheme_Base # Sk       MACRON
+00B0          ; Grapheme_Base # So       DEGREE SIGN
+00B1          ; Grapheme_Base # Sm       PLUS-MINUS SIGN
+00B2..00B3    ; Grapheme_Base # No   [2] SUPERSCRIPT TWO..SUPERSCRIPT THREE
+00B4          ; Grapheme_Base # Sk       ACUTE ACCENT
+00B5          ; Grapheme_Base # L&       MICRO SIGN
+00B6..00B7    ; Grapheme_Base # Po   [2] PILCROW SIGN..MIDDLE DOT
+00B8          ; Grapheme_Base # Sk       CEDILLA
+00B9          ; Grapheme_Base # No       SUPERSCRIPT ONE
+00BA          ; Grapheme_Base # Lo       MASCULINE ORDINAL INDICATOR
+00BB          ; Grapheme_Base # Pf       RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
+00BC..00BE    ; Grapheme_Base # No   [3] VULGAR FRACTION ONE QUARTER..VULGAR FRACTION THREE QUARTERS
+00BF          ; Grapheme_Base # Po       INVERTED QUESTION MARK
+00C0..00D6    ; Grapheme_Base # L&  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D7          ; Grapheme_Base # Sm       MULTIPLICATION SIGN
+00D8..00F6    ; Grapheme_Base # L&  [31] LATIN CAPITAL LETTER O WITH STROKE..LATIN SMALL LETTER O WITH DIAERESIS
+00F7          ; Grapheme_Base # Sm       DIVISION SIGN
+00F8..01BA    ; Grapheme_Base # L& [195] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER EZH WITH TAIL
+01BB          ; Grapheme_Base # Lo       LATIN LETTER TWO WITH STROKE
+01BC..01BF    ; Grapheme_Base # L&   [4] LATIN CAPITAL LETTER TONE FIVE..LATIN LETTER WYNN
+01C0..01C3    ; Grapheme_Base # Lo   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+01C4..0293    ; Grapheme_Base # L& [208] LATIN CAPITAL LETTER DZ WITH CARON..LATIN SMALL LETTER EZH WITH CURL
+0294          ; Grapheme_Base # Lo       LATIN LETTER GLOTTAL STOP
+0295..02AF    ; Grapheme_Base # L&  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+02B0..02C1    ; Grapheme_Base # Lm  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C2..02C5    ; Grapheme_Base # Sk   [4] MODIFIER LETTER LEFT ARROWHEAD..MODIFIER LETTER DOWN ARROWHEAD
+02C6..02D1    ; Grapheme_Base # Lm  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02D2..02DF    ; Grapheme_Base # Sk  [14] MODIFIER LETTER CENTRED RIGHT HALF RING..MODIFIER LETTER CROSS ACCENT
+02E0..02E4    ; Grapheme_Base # Lm   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02E5..02EB    ; Grapheme_Base # Sk   [7] MODIFIER LETTER EXTRA-HIGH TONE BAR..MODIFIER LETTER YANG DEPARTING TONE MARK
+02EC          ; Grapheme_Base # Lm       MODIFIER LETTER VOICING
+02ED          ; Grapheme_Base # Sk       MODIFIER LETTER UNASPIRATED
+02EE          ; Grapheme_Base # Lm       MODIFIER LETTER DOUBLE APOSTROPHE
+02EF..02FF    ; Grapheme_Base # Sk  [17] MODIFIER LETTER LOW DOWN ARROWHEAD..MODIFIER LETTER LOW LEFT ARROW
+0370..0373    ; Grapheme_Base # L&   [4] GREEK CAPITAL LETTER HETA..GREEK SMALL LETTER ARCHAIC SAMPI
+0374          ; Grapheme_Base # Lm       GREEK NUMERAL SIGN
+0375          ; Grapheme_Base # Sk       GREEK LOWER NUMERAL SIGN
+0376..0377    ; Grapheme_Base # L&   [2] GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA..GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037A          ; Grapheme_Base # Lm       GREEK YPOGEGRAMMENI
+037B..037D    ; Grapheme_Base # L&   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+037E          ; Grapheme_Base # Po       GREEK QUESTION MARK
+037F          ; Grapheme_Base # L&       GREEK CAPITAL LETTER YOT
+0384..0385    ; Grapheme_Base # Sk   [2] GREEK TONOS..GREEK DIALYTIKA TONOS
+0386          ; Grapheme_Base # L&       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0387          ; Grapheme_Base # Po       GREEK ANO TELEIA
+0388..038A    ; Grapheme_Base # L&   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Grapheme_Base # L&       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..03A1    ; Grapheme_Base # L&  [20] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER RHO
+03A3..03F5    ; Grapheme_Base # L&  [83] GREEK CAPITAL LETTER SIGMA..GREEK LUNATE EPSILON SYMBOL
+03F6          ; Grapheme_Base # Sm       GREEK REVERSED LUNATE EPSILON SYMBOL
+03F7..0481    ; Grapheme_Base # L& [139] GREEK CAPITAL LETTER SHO..CYRILLIC SMALL LETTER KOPPA
+0482          ; Grapheme_Base # So       CYRILLIC THOUSANDS SIGN
+048A..052F    ; Grapheme_Base # L& [166] CYRILLIC CAPITAL LETTER SHORT I WITH TAIL..CYRILLIC SMALL LETTER EL WITH DESCENDER
+0531..0556    ; Grapheme_Base # L&  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+0559          ; Grapheme_Base # Lm       ARMENIAN MODIFIER LETTER LEFT HALF RING
+055A..055F    ; Grapheme_Base # Po   [6] ARMENIAN APOSTROPHE..ARMENIAN ABBREVIATION MARK
+0560..0588    ; Grapheme_Base # L&  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+0589          ; Grapheme_Base # Po       ARMENIAN FULL STOP
+058A          ; Grapheme_Base # Pd       ARMENIAN HYPHEN
+058D..058E    ; Grapheme_Base # So   [2] RIGHT-FACING ARMENIAN ETERNITY SIGN..LEFT-FACING ARMENIAN ETERNITY SIGN
+058F          ; Grapheme_Base # Sc       ARMENIAN DRAM SIGN
+05BE          ; Grapheme_Base # Pd       HEBREW PUNCTUATION MAQAF
+05C0          ; Grapheme_Base # Po       HEBREW PUNCTUATION PASEQ
+05C3          ; Grapheme_Base # Po       HEBREW PUNCTUATION SOF PASUQ
+05C6          ; Grapheme_Base # Po       HEBREW PUNCTUATION NUN HAFUKHA
+05D0..05EA    ; Grapheme_Base # Lo  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; Grapheme_Base # Lo   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+05F3..05F4    ; Grapheme_Base # Po   [2] HEBREW PUNCTUATION GERESH..HEBREW PUNCTUATION GERSHAYIM
+0606..0608    ; Grapheme_Base # Sm   [3] ARABIC-INDIC CUBE ROOT..ARABIC RAY
+0609..060A    ; Grapheme_Base # Po   [2] ARABIC-INDIC PER MILLE SIGN..ARABIC-INDIC PER TEN THOUSAND SIGN
+060B          ; Grapheme_Base # Sc       AFGHANI SIGN
+060C..060D    ; Grapheme_Base # Po   [2] ARABIC COMMA..ARABIC DATE SEPARATOR
+060E..060F    ; Grapheme_Base # So   [2] ARABIC POETIC VERSE SIGN..ARABIC SIGN MISRA
+061B          ; Grapheme_Base # Po       ARABIC SEMICOLON
+061D..061F    ; Grapheme_Base # Po   [3] ARABIC END OF TEXT MARK..ARABIC QUESTION MARK
+0620..063F    ; Grapheme_Base # Lo  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0640          ; Grapheme_Base # Lm       ARABIC TATWEEL
+0641..064A    ; Grapheme_Base # Lo  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+0660..0669    ; Grapheme_Base # Nd  [10] ARABIC-INDIC DIGIT ZERO..ARABIC-INDIC DIGIT NINE
+066A..066D    ; Grapheme_Base # Po   [4] ARABIC PERCENT SIGN..ARABIC FIVE POINTED STAR
+066E..066F    ; Grapheme_Base # Lo   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0671..06D3    ; Grapheme_Base # Lo  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D4          ; Grapheme_Base # Po       ARABIC FULL STOP
+06D5          ; Grapheme_Base # Lo       ARABIC LETTER AE
+06DE          ; Grapheme_Base # So       ARABIC START OF RUB EL HIZB
+06E5..06E6    ; Grapheme_Base # Lm   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+06E9          ; Grapheme_Base # So       ARABIC PLACE OF SAJDAH
+06EE..06EF    ; Grapheme_Base # Lo   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06F0..06F9    ; Grapheme_Base # Nd  [10] EXTENDED ARABIC-INDIC DIGIT ZERO..EXTENDED ARABIC-INDIC DIGIT NINE
+06FA..06FC    ; Grapheme_Base # Lo   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FD..06FE    ; Grapheme_Base # So   [2] ARABIC SIGN SINDHI AMPERSAND..ARABIC SIGN SINDHI POSTPOSITION MEN
+06FF          ; Grapheme_Base # Lo       ARABIC LETTER HEH WITH INVERTED V
+0700..070D    ; Grapheme_Base # Po  [14] SYRIAC END OF PARAGRAPH..SYRIAC HARKLEAN ASTERISCUS
+0710          ; Grapheme_Base # Lo       SYRIAC LETTER ALAPH
+0712..072F    ; Grapheme_Base # Lo  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+074D..07A5    ; Grapheme_Base # Lo  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07B1          ; Grapheme_Base # Lo       THAANA LETTER NAA
+07C0..07C9    ; Grapheme_Base # Nd  [10] NKO DIGIT ZERO..NKO DIGIT NINE
+07CA..07EA    ; Grapheme_Base # Lo  [33] NKO LETTER A..NKO LETTER JONA RA
+07F4..07F5    ; Grapheme_Base # Lm   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07F6          ; Grapheme_Base # So       NKO SYMBOL OO DENNEN
+07F7..07F9    ; Grapheme_Base # Po   [3] NKO SYMBOL GBAKURUNEN..NKO EXCLAMATION MARK
+07FA          ; Grapheme_Base # Lm       NKO LAJANYALAN
+07FE..07FF    ; Grapheme_Base # Sc   [2] NKO DOROME SIGN..NKO TAMAN SIGN
+0800..0815    ; Grapheme_Base # Lo  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+081A          ; Grapheme_Base # Lm       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+0824          ; Grapheme_Base # Lm       SAMARITAN MODIFIER LETTER SHORT A
+0828          ; Grapheme_Base # Lm       SAMARITAN MODIFIER LETTER I
+0830..083E    ; Grapheme_Base # Po  [15] SAMARITAN PUNCTUATION NEQUDAA..SAMARITAN PUNCTUATION ANNAAU
+0840..0858    ; Grapheme_Base # Lo  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+085E          ; Grapheme_Base # Po       MANDAIC PUNCTUATION
+0860..086A    ; Grapheme_Base # Lo  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; Grapheme_Base # Lo  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0888          ; Grapheme_Base # Sk       ARABIC RAISED ROUND DOT
+0889..088E    ; Grapheme_Base # Lo   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+08A0..08C8    ; Grapheme_Base # Lo  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+08C9          ; Grapheme_Base # Lm       ARABIC SMALL FARSI YEH
+0903          ; Grapheme_Base # Mc       DEVANAGARI SIGN VISARGA
+0904..0939    ; Grapheme_Base # Lo  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093B          ; Grapheme_Base # Mc       DEVANAGARI VOWEL SIGN OOE
+093D          ; Grapheme_Base # Lo       DEVANAGARI SIGN AVAGRAHA
+093E..0940    ; Grapheme_Base # Mc   [3] DEVANAGARI VOWEL SIGN AA..DEVANAGARI VOWEL SIGN II
+0949..094C    ; Grapheme_Base # Mc   [4] DEVANAGARI VOWEL SIGN CANDRA O..DEVANAGARI VOWEL SIGN AU
+094E..094F    ; Grapheme_Base # Mc   [2] DEVANAGARI VOWEL SIGN PRISHTHAMATRA E..DEVANAGARI VOWEL SIGN AW
+0950          ; Grapheme_Base # Lo       DEVANAGARI OM
+0958..0961    ; Grapheme_Base # Lo  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0964..0965    ; Grapheme_Base # Po   [2] DEVANAGARI DANDA..DEVANAGARI DOUBLE DANDA
+0966..096F    ; Grapheme_Base # Nd  [10] DEVANAGARI DIGIT ZERO..DEVANAGARI DIGIT NINE
+0970          ; Grapheme_Base # Po       DEVANAGARI ABBREVIATION SIGN
+0971          ; Grapheme_Base # Lm       DEVANAGARI SIGN HIGH SPACING DOT
+0972..0980    ; Grapheme_Base # Lo  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0982..0983    ; Grapheme_Base # Mc   [2] BENGALI SIGN ANUSVARA..BENGALI SIGN VISARGA
+0985..098C    ; Grapheme_Base # Lo   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; Grapheme_Base # Lo   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; Grapheme_Base # Lo  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; Grapheme_Base # Lo   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; Grapheme_Base # Lo       BENGALI LETTER LA
+09B6..09B9    ; Grapheme_Base # Lo   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BD          ; Grapheme_Base # Lo       BENGALI SIGN AVAGRAHA
+09BF..09C0    ; Grapheme_Base # Mc   [2] BENGALI VOWEL SIGN I..BENGALI VOWEL SIGN II
+09C7..09C8    ; Grapheme_Base # Mc   [2] BENGALI VOWEL SIGN E..BENGALI VOWEL SIGN AI
+09CB..09CC    ; Grapheme_Base # Mc   [2] BENGALI VOWEL SIGN O..BENGALI VOWEL SIGN AU
+09CE          ; Grapheme_Base # Lo       BENGALI LETTER KHANDA TA
+09DC..09DD    ; Grapheme_Base # Lo   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; Grapheme_Base # Lo   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09E6..09EF    ; Grapheme_Base # Nd  [10] BENGALI DIGIT ZERO..BENGALI DIGIT NINE
+09F0..09F1    ; Grapheme_Base # Lo   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09F2..09F3    ; Grapheme_Base # Sc   [2] BENGALI RUPEE MARK..BENGALI RUPEE SIGN
+09F4..09F9    ; Grapheme_Base # No   [6] BENGALI CURRENCY NUMERATOR ONE..BENGALI CURRENCY DENOMINATOR SIXTEEN
+09FA          ; Grapheme_Base # So       BENGALI ISSHAR
+09FB          ; Grapheme_Base # Sc       BENGALI GANDA MARK
+09FC          ; Grapheme_Base # Lo       BENGALI LETTER VEDIC ANUSVARA
+09FD          ; Grapheme_Base # Po       BENGALI ABBREVIATION SIGN
+0A03          ; Grapheme_Base # Mc       GURMUKHI SIGN VISARGA
+0A05..0A0A    ; Grapheme_Base # Lo   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; Grapheme_Base # Lo   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; Grapheme_Base # Lo  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; Grapheme_Base # Lo   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; Grapheme_Base # Lo   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; Grapheme_Base # Lo   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; Grapheme_Base # Lo   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A3E..0A40    ; Grapheme_Base # Mc   [3] GURMUKHI VOWEL SIGN AA..GURMUKHI VOWEL SIGN II
+0A59..0A5C    ; Grapheme_Base # Lo   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; Grapheme_Base # Lo       GURMUKHI LETTER FA
+0A66..0A6F    ; Grapheme_Base # Nd  [10] GURMUKHI DIGIT ZERO..GURMUKHI DIGIT NINE
+0A72..0A74    ; Grapheme_Base # Lo   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A76          ; Grapheme_Base # Po       GURMUKHI ABBREVIATION SIGN
+0A83          ; Grapheme_Base # Mc       GUJARATI SIGN VISARGA
+0A85..0A8D    ; Grapheme_Base # Lo   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; Grapheme_Base # Lo   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; Grapheme_Base # Lo  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; Grapheme_Base # Lo   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; Grapheme_Base # Lo   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; Grapheme_Base # Lo   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABD          ; Grapheme_Base # Lo       GUJARATI SIGN AVAGRAHA
+0ABE..0AC0    ; Grapheme_Base # Mc   [3] GUJARATI VOWEL SIGN AA..GUJARATI VOWEL SIGN II
+0AC9          ; Grapheme_Base # Mc       GUJARATI VOWEL SIGN CANDRA O
+0ACB..0ACC    ; Grapheme_Base # Mc   [2] GUJARATI VOWEL SIGN O..GUJARATI VOWEL SIGN AU
+0AD0          ; Grapheme_Base # Lo       GUJARATI OM
+0AE0..0AE1    ; Grapheme_Base # Lo   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AE6..0AEF    ; Grapheme_Base # Nd  [10] GUJARATI DIGIT ZERO..GUJARATI DIGIT NINE
+0AF0          ; Grapheme_Base # Po       GUJARATI ABBREVIATION SIGN
+0AF1          ; Grapheme_Base # Sc       GUJARATI RUPEE SIGN
+0AF9          ; Grapheme_Base # Lo       GUJARATI LETTER ZHA
+0B02..0B03    ; Grapheme_Base # Mc   [2] ORIYA SIGN ANUSVARA..ORIYA SIGN VISARGA
+0B05..0B0C    ; Grapheme_Base # Lo   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; Grapheme_Base # Lo   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; Grapheme_Base # Lo  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; Grapheme_Base # Lo   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; Grapheme_Base # Lo   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; Grapheme_Base # Lo   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3D          ; Grapheme_Base # Lo       ORIYA SIGN AVAGRAHA
+0B40          ; Grapheme_Base # Mc       ORIYA VOWEL SIGN II
+0B47..0B48    ; Grapheme_Base # Mc   [2] ORIYA VOWEL SIGN E..ORIYA VOWEL SIGN AI
+0B4B..0B4C    ; Grapheme_Base # Mc   [2] ORIYA VOWEL SIGN O..ORIYA VOWEL SIGN AU
+0B5C..0B5D    ; Grapheme_Base # Lo   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; Grapheme_Base # Lo   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B66..0B6F    ; Grapheme_Base # Nd  [10] ORIYA DIGIT ZERO..ORIYA DIGIT NINE
+0B70          ; Grapheme_Base # So       ORIYA ISSHAR
+0B71          ; Grapheme_Base # Lo       ORIYA LETTER WA
+0B72..0B77    ; Grapheme_Base # No   [6] ORIYA FRACTION ONE QUARTER..ORIYA FRACTION THREE SIXTEENTHS
+0B83          ; Grapheme_Base # Lo       TAMIL SIGN VISARGA
+0B85..0B8A    ; Grapheme_Base # Lo   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; Grapheme_Base # Lo   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; Grapheme_Base # Lo   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; Grapheme_Base # Lo   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; Grapheme_Base # Lo       TAMIL LETTER JA
+0B9E..0B9F    ; Grapheme_Base # Lo   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; Grapheme_Base # Lo   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; Grapheme_Base # Lo   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; Grapheme_Base # Lo  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BBF          ; Grapheme_Base # Mc       TAMIL VOWEL SIGN I
+0BC1..0BC2    ; Grapheme_Base # Mc   [2] TAMIL VOWEL SIGN U..TAMIL VOWEL SIGN UU
+0BC6..0BC8    ; Grapheme_Base # Mc   [3] TAMIL VOWEL SIGN E..TAMIL VOWEL SIGN AI
+0BCA..0BCC    ; Grapheme_Base # Mc   [3] TAMIL VOWEL SIGN O..TAMIL VOWEL SIGN AU
+0BD0          ; Grapheme_Base # Lo       TAMIL OM
+0BE6..0BEF    ; Grapheme_Base # Nd  [10] TAMIL DIGIT ZERO..TAMIL DIGIT NINE
+0BF0..0BF2    ; Grapheme_Base # No   [3] TAMIL NUMBER TEN..TAMIL NUMBER ONE THOUSAND
+0BF3..0BF8    ; Grapheme_Base # So   [6] TAMIL DAY SIGN..TAMIL AS ABOVE SIGN
+0BF9          ; Grapheme_Base # Sc       TAMIL RUPEE SIGN
+0BFA          ; Grapheme_Base # So       TAMIL NUMBER SIGN
+0C01..0C03    ; Grapheme_Base # Mc   [3] TELUGU SIGN CANDRABINDU..TELUGU SIGN VISARGA
+0C05..0C0C    ; Grapheme_Base # Lo   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; Grapheme_Base # Lo   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; Grapheme_Base # Lo  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; Grapheme_Base # Lo  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3D          ; Grapheme_Base # Lo       TELUGU SIGN AVAGRAHA
+0C41..0C44    ; Grapheme_Base # Mc   [4] TELUGU VOWEL SIGN U..TELUGU VOWEL SIGN VOCALIC RR
+0C58..0C5A    ; Grapheme_Base # Lo   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; Grapheme_Base # Lo       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; Grapheme_Base # Lo   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C66..0C6F    ; Grapheme_Base # Nd  [10] TELUGU DIGIT ZERO..TELUGU DIGIT NINE
+0C77          ; Grapheme_Base # Po       TELUGU SIGN SIDDHAM
+0C78..0C7E    ; Grapheme_Base # No   [7] TELUGU FRACTION DIGIT ZERO FOR ODD POWERS OF FOUR..TELUGU FRACTION DIGIT THREE FOR EVEN POWERS OF FOUR
+0C7F          ; Grapheme_Base # So       TELUGU SIGN TUUMU
+0C80          ; Grapheme_Base # Lo       KANNADA SIGN SPACING CANDRABINDU
+0C82..0C83    ; Grapheme_Base # Mc   [2] KANNADA SIGN ANUSVARA..KANNADA SIGN VISARGA
+0C84          ; Grapheme_Base # Po       KANNADA SIGN SIDDHAM
+0C85..0C8C    ; Grapheme_Base # Lo   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; Grapheme_Base # Lo   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; Grapheme_Base # Lo  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; Grapheme_Base # Lo  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; Grapheme_Base # Lo   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBD          ; Grapheme_Base # Lo       KANNADA SIGN AVAGRAHA
+0CBE          ; Grapheme_Base # Mc       KANNADA VOWEL SIGN AA
+0CC0..0CC1    ; Grapheme_Base # Mc   [2] KANNADA VOWEL SIGN II..KANNADA VOWEL SIGN U
+0CC3..0CC4    ; Grapheme_Base # Mc   [2] KANNADA VOWEL SIGN VOCALIC R..KANNADA VOWEL SIGN VOCALIC RR
+0CC7..0CC8    ; Grapheme_Base # Mc   [2] KANNADA VOWEL SIGN EE..KANNADA VOWEL SIGN AI
+0CCA..0CCB    ; Grapheme_Base # Mc   [2] KANNADA VOWEL SIGN O..KANNADA VOWEL SIGN OO
+0CDD..0CDE    ; Grapheme_Base # Lo   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; Grapheme_Base # Lo   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CE6..0CEF    ; Grapheme_Base # Nd  [10] KANNADA DIGIT ZERO..KANNADA DIGIT NINE
+0CF1..0CF2    ; Grapheme_Base # Lo   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0CF3          ; Grapheme_Base # Mc       KANNADA SIGN COMBINING ANUSVARA ABOVE RIGHT
+0D02..0D03    ; Grapheme_Base # Mc   [2] MALAYALAM SIGN ANUSVARA..MALAYALAM SIGN VISARGA
+0D04..0D0C    ; Grapheme_Base # Lo   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; Grapheme_Base # Lo   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; Grapheme_Base # Lo  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3D          ; Grapheme_Base # Lo       MALAYALAM SIGN AVAGRAHA
+0D3F..0D40    ; Grapheme_Base # Mc   [2] MALAYALAM VOWEL SIGN I..MALAYALAM VOWEL SIGN II
+0D46..0D48    ; Grapheme_Base # Mc   [3] MALAYALAM VOWEL SIGN E..MALAYALAM VOWEL SIGN AI
+0D4A..0D4C    ; Grapheme_Base # Mc   [3] MALAYALAM VOWEL SIGN O..MALAYALAM VOWEL SIGN AU
+0D4E          ; Grapheme_Base # Lo       MALAYALAM LETTER DOT REPH
+0D4F          ; Grapheme_Base # So       MALAYALAM SIGN PARA
+0D54..0D56    ; Grapheme_Base # Lo   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D58..0D5E    ; Grapheme_Base # No   [7] MALAYALAM FRACTION ONE ONE-HUNDRED-AND-SIXTIETH..MALAYALAM FRACTION ONE FIFTH
+0D5F..0D61    ; Grapheme_Base # Lo   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D66..0D6F    ; Grapheme_Base # Nd  [10] MALAYALAM DIGIT ZERO..MALAYALAM DIGIT NINE
+0D70..0D78    ; Grapheme_Base # No   [9] MALAYALAM NUMBER TEN..MALAYALAM FRACTION THREE SIXTEENTHS
+0D79          ; Grapheme_Base # So       MALAYALAM DATE MARK
+0D7A..0D7F    ; Grapheme_Base # Lo   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D82..0D83    ; Grapheme_Base # Mc   [2] SINHALA SIGN ANUSVARAYA..SINHALA SIGN VISARGAYA
+0D85..0D96    ; Grapheme_Base # Lo  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; Grapheme_Base # Lo  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; Grapheme_Base # Lo   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; Grapheme_Base # Lo       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; Grapheme_Base # Lo   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0DD0..0DD1    ; Grapheme_Base # Mc   [2] SINHALA VOWEL SIGN KETTI AEDA-PILLA..SINHALA VOWEL SIGN DIGA AEDA-PILLA
+0DD8..0DDE    ; Grapheme_Base # Mc   [7] SINHALA VOWEL SIGN GAETTA-PILLA..SINHALA VOWEL SIGN KOMBUVA HAA GAYANUKITTA
+0DE6..0DEF    ; Grapheme_Base # Nd  [10] SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT NINE
+0DF2..0DF3    ; Grapheme_Base # Mc   [2] SINHALA VOWEL SIGN DIGA GAETTA-PILLA..SINHALA VOWEL SIGN DIGA GAYANUKITTA
+0DF4          ; Grapheme_Base # Po       SINHALA PUNCTUATION KUNDDALIYA
+0E01..0E30    ; Grapheme_Base # Lo  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E32..0E33    ; Grapheme_Base # Lo   [2] THAI CHARACTER SARA AA..THAI CHARACTER SARA AM
+0E3F          ; Grapheme_Base # Sc       THAI CURRENCY SYMBOL BAHT
+0E40..0E45    ; Grapheme_Base # Lo   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E46          ; Grapheme_Base # Lm       THAI CHARACTER MAIYAMOK
+0E4F          ; Grapheme_Base # Po       THAI CHARACTER FONGMAN
+0E50..0E59    ; Grapheme_Base # Nd  [10] THAI DIGIT ZERO..THAI DIGIT NINE
+0E5A..0E5B    ; Grapheme_Base # Po   [2] THAI CHARACTER ANGKHANKHU..THAI CHARACTER KHOMUT
+0E81..0E82    ; Grapheme_Base # Lo   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; Grapheme_Base # Lo       LAO LETTER KHO TAM
+0E86..0E8A    ; Grapheme_Base # Lo   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; Grapheme_Base # Lo  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; Grapheme_Base # Lo       LAO LETTER LO LOOT
+0EA7..0EB0    ; Grapheme_Base # Lo  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB2..0EB3    ; Grapheme_Base # Lo   [2] LAO VOWEL SIGN AA..LAO VOWEL SIGN AM
+0EBD          ; Grapheme_Base # Lo       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; Grapheme_Base # Lo   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EC6          ; Grapheme_Base # Lm       LAO KO LA
+0ED0..0ED9    ; Grapheme_Base # Nd  [10] LAO DIGIT ZERO..LAO DIGIT NINE
+0EDC..0EDF    ; Grapheme_Base # Lo   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; Grapheme_Base # Lo       TIBETAN SYLLABLE OM
+0F01..0F03    ; Grapheme_Base # So   [3] TIBETAN MARK GTER YIG MGO TRUNCATED A..TIBETAN MARK GTER YIG MGO -UM GTER TSHEG MA
+0F04..0F12    ; Grapheme_Base # Po  [15] TIBETAN MARK INITIAL YIG MGO MDUN MA..TIBETAN MARK RGYA GRAM SHAD
+0F13          ; Grapheme_Base # So       TIBETAN MARK CARET -DZUD RTAGS ME LONG CAN
+0F14          ; Grapheme_Base # Po       TIBETAN MARK GTER TSHEG
+0F15..0F17    ; Grapheme_Base # So   [3] TIBETAN LOGOTYPE SIGN CHAD RTAGS..TIBETAN ASTROLOGICAL SIGN SGRA GCAN -CHAR RTAGS
+0F1A..0F1F    ; Grapheme_Base # So   [6] TIBETAN SIGN RDEL DKAR GCIG..TIBETAN SIGN RDEL DKAR RDEL NAG
+0F20..0F29    ; Grapheme_Base # Nd  [10] TIBETAN DIGIT ZERO..TIBETAN DIGIT NINE
+0F2A..0F33    ; Grapheme_Base # No  [10] TIBETAN DIGIT HALF ONE..TIBETAN DIGIT HALF ZERO
+0F34          ; Grapheme_Base # So       TIBETAN MARK BSDUS RTAGS
+0F36          ; Grapheme_Base # So       TIBETAN MARK CARET -DZUD RTAGS BZHI MIG CAN
+0F38          ; Grapheme_Base # So       TIBETAN MARK CHE MGO
+0F3A          ; Grapheme_Base # Ps       TIBETAN MARK GUG RTAGS GYON
+0F3B          ; Grapheme_Base # Pe       TIBETAN MARK GUG RTAGS GYAS
+0F3C          ; Grapheme_Base # Ps       TIBETAN MARK ANG KHANG GYON
+0F3D          ; Grapheme_Base # Pe       TIBETAN MARK ANG KHANG GYAS
+0F3E..0F3F    ; Grapheme_Base # Mc   [2] TIBETAN SIGN YAR TSHES..TIBETAN SIGN MAR TSHES
+0F40..0F47    ; Grapheme_Base # Lo   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; Grapheme_Base # Lo  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F7F          ; Grapheme_Base # Mc       TIBETAN SIGN RNAM BCAD
+0F85          ; Grapheme_Base # Po       TIBETAN MARK PALUTA
+0F88..0F8C    ; Grapheme_Base # Lo   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+0FBE..0FC5    ; Grapheme_Base # So   [8] TIBETAN KU RU KHA..TIBETAN SYMBOL RDO RJE
+0FC7..0FCC    ; Grapheme_Base # So   [6] TIBETAN SYMBOL RDO RJE RGYA GRAM..TIBETAN SYMBOL NOR BU BZHI -KHYIL
+0FCE..0FCF    ; Grapheme_Base # So   [2] TIBETAN SIGN RDEL NAG RDEL DKAR..TIBETAN SIGN RDEL NAG GSUM
+0FD0..0FD4    ; Grapheme_Base # Po   [5] TIBETAN MARK BSKA- SHOG GI MGO RGYAN..TIBETAN MARK CLOSING BRDA RNYING YIG MGO SGAB MA
+0FD5..0FD8    ; Grapheme_Base # So   [4] RIGHT-FACING SVASTI SIGN..LEFT-FACING SVASTI SIGN WITH DOTS
+0FD9..0FDA    ; Grapheme_Base # Po   [2] TIBETAN MARK LEADING MCHAN RTAGS..TIBETAN MARK TRAILING MCHAN RTAGS
+1000..102A    ; Grapheme_Base # Lo  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+102B..102C    ; Grapheme_Base # Mc   [2] MYANMAR VOWEL SIGN TALL AA..MYANMAR VOWEL SIGN AA
+1031          ; Grapheme_Base # Mc       MYANMAR VOWEL SIGN E
+1038          ; Grapheme_Base # Mc       MYANMAR SIGN VISARGA
+103B..103C    ; Grapheme_Base # Mc   [2] MYANMAR CONSONANT SIGN MEDIAL YA..MYANMAR CONSONANT SIGN MEDIAL RA
+103F          ; Grapheme_Base # Lo       MYANMAR LETTER GREAT SA
+1040..1049    ; Grapheme_Base # Nd  [10] MYANMAR DIGIT ZERO..MYANMAR DIGIT NINE
+104A..104F    ; Grapheme_Base # Po   [6] MYANMAR SIGN LITTLE SECTION..MYANMAR SYMBOL GENITIVE
+1050..1055    ; Grapheme_Base # Lo   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+1056..1057    ; Grapheme_Base # Mc   [2] MYANMAR VOWEL SIGN VOCALIC R..MYANMAR VOWEL SIGN VOCALIC RR
+105A..105D    ; Grapheme_Base # Lo   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+1061          ; Grapheme_Base # Lo       MYANMAR LETTER SGAW KAREN SHA
+1062..1064    ; Grapheme_Base # Mc   [3] MYANMAR VOWEL SIGN SGAW KAREN EU..MYANMAR TONE MARK SGAW KAREN KE PHO
+1065..1066    ; Grapheme_Base # Lo   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+1067..106D    ; Grapheme_Base # Mc   [7] MYANMAR VOWEL SIGN WESTERN PWO KAREN EU..MYANMAR SIGN WESTERN PWO KAREN TONE-5
+106E..1070    ; Grapheme_Base # Lo   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1075..1081    ; Grapheme_Base # Lo  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+1083..1084    ; Grapheme_Base # Mc   [2] MYANMAR VOWEL SIGN SHAN AA..MYANMAR VOWEL SIGN SHAN E
+1087..108C    ; Grapheme_Base # Mc   [6] MYANMAR SIGN SHAN TONE-2..MYANMAR SIGN SHAN COUNCIL TONE-3
+108E          ; Grapheme_Base # Lo       MYANMAR LETTER RUMAI PALAUNG FA
+108F          ; Grapheme_Base # Mc       MYANMAR SIGN RUMAI PALAUNG TONE-5
+1090..1099    ; Grapheme_Base # Nd  [10] MYANMAR SHAN DIGIT ZERO..MYANMAR SHAN DIGIT NINE
+109A..109C    ; Grapheme_Base # Mc   [3] MYANMAR SIGN KHAMTI TONE-1..MYANMAR VOWEL SIGN AITON A
+109E..109F    ; Grapheme_Base # So   [2] MYANMAR SYMBOL SHAN ONE..MYANMAR SYMBOL SHAN EXCLAMATION
+10A0..10C5    ; Grapheme_Base # L&  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Grapheme_Base # L&       GEORGIAN CAPITAL LETTER YN
+10CD          ; Grapheme_Base # L&       GEORGIAN CAPITAL LETTER AEN
+10D0..10FA    ; Grapheme_Base # L&  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FB          ; Grapheme_Base # Po       GEORGIAN PARAGRAPH SEPARATOR
+10FC          ; Grapheme_Base # Lm       MODIFIER LETTER GEORGIAN NAR
+10FD..10FF    ; Grapheme_Base # L&   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+1100..1248    ; Grapheme_Base # Lo [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; Grapheme_Base # Lo       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; Grapheme_Base # Lo  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; Grapheme_Base # Lo  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; Grapheme_Base # Lo       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; Grapheme_Base # Lo  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; Grapheme_Base # Lo  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; Grapheme_Base # Lo  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+1360..1368    ; Grapheme_Base # Po   [9] ETHIOPIC SECTION MARK..ETHIOPIC PARAGRAPH SEPARATOR
+1369..137C    ; Grapheme_Base # No  [20] ETHIOPIC DIGIT ONE..ETHIOPIC NUMBER TEN THOUSAND
+1380..138F    ; Grapheme_Base # Lo  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+1390..1399    ; Grapheme_Base # So  [10] ETHIOPIC TONAL MARK YIZET..ETHIOPIC TONAL MARK KURT
+13A0..13F5    ; Grapheme_Base # L&  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+13F8..13FD    ; Grapheme_Base # L&   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1400          ; Grapheme_Base # Pd       CANADIAN SYLLABICS HYPHEN
+1401..166C    ; Grapheme_Base # Lo [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166D          ; Grapheme_Base # So       CANADIAN SYLLABICS CHI SIGN
+166E          ; Grapheme_Base # Po       CANADIAN SYLLABICS FULL STOP
+166F..167F    ; Grapheme_Base # Lo  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1680          ; Grapheme_Base # Zs       OGHAM SPACE MARK
+1681..169A    ; Grapheme_Base # Lo  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+169B          ; Grapheme_Base # Ps       OGHAM FEATHER MARK
+169C          ; Grapheme_Base # Pe       OGHAM REVERSED FEATHER MARK
+16A0..16EA    ; Grapheme_Base # Lo  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16EB..16ED    ; Grapheme_Base # Po   [3] RUNIC SINGLE PUNCTUATION..RUNIC CROSS PUNCTUATION
+16EE..16F0    ; Grapheme_Base # Nl   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+16F1..16F8    ; Grapheme_Base # Lo   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; Grapheme_Base # Lo  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+1715          ; Grapheme_Base # Mc       TAGALOG SIGN PAMUDPOD
+171F..1731    ; Grapheme_Base # Lo  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1734          ; Grapheme_Base # Mc       HANUNOO SIGN PAMUDPOD
+1735..1736    ; Grapheme_Base # Po   [2] PHILIPPINE SINGLE PUNCTUATION..PHILIPPINE DOUBLE PUNCTUATION
+1740..1751    ; Grapheme_Base # Lo  [18] BUHID LETTER A..BUHID LETTER HA
+1760..176C    ; Grapheme_Base # Lo  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; Grapheme_Base # Lo   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1780..17B3    ; Grapheme_Base # Lo  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17B6          ; Grapheme_Base # Mc       KHMER VOWEL SIGN AA
+17BE..17C5    ; Grapheme_Base # Mc   [8] KHMER VOWEL SIGN OE..KHMER VOWEL SIGN AU
+17C7..17C8    ; Grapheme_Base # Mc   [2] KHMER SIGN REAHMUK..KHMER SIGN YUUKALEAPINTU
+17D4..17D6    ; Grapheme_Base # Po   [3] KHMER SIGN KHAN..KHMER SIGN CAMNUC PII KUUH
+17D7          ; Grapheme_Base # Lm       KHMER SIGN LEK TOO
+17D8..17DA    ; Grapheme_Base # Po   [3] KHMER SIGN BEYYAL..KHMER SIGN KOOMUUT
+17DB          ; Grapheme_Base # Sc       KHMER CURRENCY SYMBOL RIEL
+17DC          ; Grapheme_Base # Lo       KHMER SIGN AVAKRAHASANYA
+17E0..17E9    ; Grapheme_Base # Nd  [10] KHMER DIGIT ZERO..KHMER DIGIT NINE
+17F0..17F9    ; Grapheme_Base # No  [10] KHMER SYMBOL LEK ATTAK SON..KHMER SYMBOL LEK ATTAK PRAM-BUON
+1800..1805    ; Grapheme_Base # Po   [6] MONGOLIAN BIRGA..MONGOLIAN FOUR DOTS
+1806          ; Grapheme_Base # Pd       MONGOLIAN TODO SOFT HYPHEN
+1807..180A    ; Grapheme_Base # Po   [4] MONGOLIAN SIBE SYLLABLE BOUNDARY MARKER..MONGOLIAN NIRUGU
+1810..1819    ; Grapheme_Base # Nd  [10] MONGOLIAN DIGIT ZERO..MONGOLIAN DIGIT NINE
+1820..1842    ; Grapheme_Base # Lo  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1843          ; Grapheme_Base # Lm       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1844..1878    ; Grapheme_Base # Lo  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; Grapheme_Base # Lo   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1887..18A8    ; Grapheme_Base # Lo  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18AA          ; Grapheme_Base # Lo       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; Grapheme_Base # Lo  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; Grapheme_Base # Lo  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1923..1926    ; Grapheme_Base # Mc   [4] LIMBU VOWEL SIGN EE..LIMBU VOWEL SIGN AU
+1929..192B    ; Grapheme_Base # Mc   [3] LIMBU SUBJOINED LETTER YA..LIMBU SUBJOINED LETTER WA
+1930..1931    ; Grapheme_Base # Mc   [2] LIMBU SMALL LETTER KA..LIMBU SMALL LETTER NGA
+1933..1938    ; Grapheme_Base # Mc   [6] LIMBU SMALL LETTER TA..LIMBU SMALL LETTER LA
+1940          ; Grapheme_Base # So       LIMBU SIGN LOO
+1944..1945    ; Grapheme_Base # Po   [2] LIMBU EXCLAMATION MARK..LIMBU QUESTION MARK
+1946..194F    ; Grapheme_Base # Nd  [10] LIMBU DIGIT ZERO..LIMBU DIGIT NINE
+1950..196D    ; Grapheme_Base # Lo  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; Grapheme_Base # Lo   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; Grapheme_Base # Lo  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; Grapheme_Base # Lo  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+19D0..19D9    ; Grapheme_Base # Nd  [10] NEW TAI LUE DIGIT ZERO..NEW TAI LUE DIGIT NINE
+19DA          ; Grapheme_Base # No       NEW TAI LUE THAM DIGIT ONE
+19DE..19FF    ; Grapheme_Base # So  [34] NEW TAI LUE SIGN LAE..KHMER SYMBOL DAP-PRAM ROC
+1A00..1A16    ; Grapheme_Base # Lo  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A19..1A1A    ; Grapheme_Base # Mc   [2] BUGINESE VOWEL SIGN E..BUGINESE VOWEL SIGN O
+1A1E..1A1F    ; Grapheme_Base # Po   [2] BUGINESE PALLAWA..BUGINESE END OF SECTION
+1A20..1A54    ; Grapheme_Base # Lo  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1A55          ; Grapheme_Base # Mc       TAI THAM CONSONANT SIGN MEDIAL RA
+1A57          ; Grapheme_Base # Mc       TAI THAM CONSONANT SIGN LA TANG LAI
+1A61          ; Grapheme_Base # Mc       TAI THAM VOWEL SIGN A
+1A63..1A64    ; Grapheme_Base # Mc   [2] TAI THAM VOWEL SIGN AA..TAI THAM VOWEL SIGN TALL AA
+1A6D..1A72    ; Grapheme_Base # Mc   [6] TAI THAM VOWEL SIGN OY..TAI THAM VOWEL SIGN THAM AI
+1A80..1A89    ; Grapheme_Base # Nd  [10] TAI THAM HORA DIGIT ZERO..TAI THAM HORA DIGIT NINE
+1A90..1A99    ; Grapheme_Base # Nd  [10] TAI THAM THAM DIGIT ZERO..TAI THAM THAM DIGIT NINE
+1AA0..1AA6    ; Grapheme_Base # Po   [7] TAI THAM SIGN WIANG..TAI THAM SIGN REVERSED ROTATED RANA
+1AA7          ; Grapheme_Base # Lm       TAI THAM SIGN MAI YAMOK
+1AA8..1AAD    ; Grapheme_Base # Po   [6] TAI THAM SIGN KAAN..TAI THAM SIGN CAANG
+1B04          ; Grapheme_Base # Mc       BALINESE SIGN BISAH
+1B05..1B33    ; Grapheme_Base # Lo  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B3B          ; Grapheme_Base # Mc       BALINESE VOWEL SIGN RA REPA TEDUNG
+1B3D..1B41    ; Grapheme_Base # Mc   [5] BALINESE VOWEL SIGN LA LENGA TEDUNG..BALINESE VOWEL SIGN TALING REPA TEDUNG
+1B43..1B44    ; Grapheme_Base # Mc   [2] BALINESE VOWEL SIGN PEPET TEDUNG..BALINESE ADEG ADEG
+1B45..1B4C    ; Grapheme_Base # Lo   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B50..1B59    ; Grapheme_Base # Nd  [10] BALINESE DIGIT ZERO..BALINESE DIGIT NINE
+1B5A..1B60    ; Grapheme_Base # Po   [7] BALINESE PANTI..BALINESE PAMENENG
+1B61..1B6A    ; Grapheme_Base # So  [10] BALINESE MUSICAL SYMBOL DONG..BALINESE MUSICAL SYMBOL DANG GEDE
+1B74..1B7C    ; Grapheme_Base # So   [9] BALINESE MUSICAL SYMBOL RIGHT-HAND OPEN DUG..BALINESE MUSICAL SYMBOL LEFT-HAND OPEN PING
+1B7D..1B7E    ; Grapheme_Base # Po   [2] BALINESE PANTI LANTANG..BALINESE PAMADA LANTANG
+1B82          ; Grapheme_Base # Mc       SUNDANESE SIGN PANGWISAD
+1B83..1BA0    ; Grapheme_Base # Lo  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BA1          ; Grapheme_Base # Mc       SUNDANESE CONSONANT SIGN PAMINGKAL
+1BA6..1BA7    ; Grapheme_Base # Mc   [2] SUNDANESE VOWEL SIGN PANAELAENG..SUNDANESE VOWEL SIGN PANOLONG
+1BAA          ; Grapheme_Base # Mc       SUNDANESE SIGN PAMAAEH
+1BAE..1BAF    ; Grapheme_Base # Lo   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BB0..1BB9    ; Grapheme_Base # Nd  [10] SUNDANESE DIGIT ZERO..SUNDANESE DIGIT NINE
+1BBA..1BE5    ; Grapheme_Base # Lo  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1BE7          ; Grapheme_Base # Mc       BATAK VOWEL SIGN E
+1BEA..1BEC    ; Grapheme_Base # Mc   [3] BATAK VOWEL SIGN I..BATAK VOWEL SIGN O
+1BEE          ; Grapheme_Base # Mc       BATAK VOWEL SIGN U
+1BF2..1BF3    ; Grapheme_Base # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
+1BFC..1BFF    ; Grapheme_Base # Po   [4] BATAK SYMBOL BINDU NA METEK..BATAK SYMBOL BINDU PANGOLAT
+1C00..1C23    ; Grapheme_Base # Lo  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C24..1C2B    ; Grapheme_Base # Mc   [8] LEPCHA SUBJOINED LETTER YA..LEPCHA VOWEL SIGN UU
+1C34..1C35    ; Grapheme_Base # Mc   [2] LEPCHA CONSONANT SIGN NYIN-DO..LEPCHA CONSONANT SIGN KANG
+1C3B..1C3F    ; Grapheme_Base # Po   [5] LEPCHA PUNCTUATION TA-ROL..LEPCHA PUNCTUATION TSHOOK
+1C40..1C49    ; Grapheme_Base # Nd  [10] LEPCHA DIGIT ZERO..LEPCHA DIGIT NINE
+1C4D..1C4F    ; Grapheme_Base # Lo   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C50..1C59    ; Grapheme_Base # Nd  [10] OL CHIKI DIGIT ZERO..OL CHIKI DIGIT NINE
+1C5A..1C77    ; Grapheme_Base # Lo  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1C78..1C7D    ; Grapheme_Base # Lm   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1C7E..1C7F    ; Grapheme_Base # Po   [2] OL CHIKI PUNCTUATION MUCAAD..OL CHIKI PUNCTUATION DOUBLE MUCAAD
+1C80..1C88    ; Grapheme_Base # L&   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1C90..1CBA    ; Grapheme_Base # L&  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Grapheme_Base # L&   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1CC0..1CC7    ; Grapheme_Base # Po   [8] SUNDANESE PUNCTUATION BINDU SURYA..SUNDANESE PUNCTUATION BINDU BA SATANGA
+1CD3          ; Grapheme_Base # Po       VEDIC SIGN NIHSHVASA
+1CE1          ; Grapheme_Base # Mc       VEDIC TONE ATHARVAVEDIC INDEPENDENT SVARITA
+1CE9..1CEC    ; Grapheme_Base # Lo   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CEE..1CF3    ; Grapheme_Base # Lo   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF5..1CF6    ; Grapheme_Base # Lo   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CF7          ; Grapheme_Base # Mc       VEDIC SIGN ATIKRAMA
+1CFA          ; Grapheme_Base # Lo       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+1D00..1D2B    ; Grapheme_Base # L&  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D2C..1D6A    ; Grapheme_Base # Lm  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D6B..1D77    ; Grapheme_Base # L&  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D78          ; Grapheme_Base # Lm       MODIFIER LETTER CYRILLIC EN
+1D79..1D9A    ; Grapheme_Base # L&  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1D9B..1DBF    ; Grapheme_Base # Lm  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+1E00..1F15    ; Grapheme_Base # L& [278] LATIN CAPITAL LETTER A WITH RING BELOW..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F18..1F1D    ; Grapheme_Base # L&   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F45    ; Grapheme_Base # L&  [38] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F48..1F4D    ; Grapheme_Base # L&   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Grapheme_Base # L&   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F59          ; Grapheme_Base # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Grapheme_Base # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Grapheme_Base # L&       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F..1F7D    ; Grapheme_Base # L&  [31] GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1FB4    ; Grapheme_Base # L&  [53] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FBC    ; Grapheme_Base # L&   [7] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FBD          ; Grapheme_Base # Sk       GREEK KORONIS
+1FBE          ; Grapheme_Base # L&       GREEK PROSGEGRAMMENI
+1FBF..1FC1    ; Grapheme_Base # Sk   [3] GREEK PSILI..GREEK DIALYTIKA AND PERISPOMENI
+1FC2..1FC4    ; Grapheme_Base # L&   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FCC    ; Grapheme_Base # L&   [7] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FCD..1FCF    ; Grapheme_Base # Sk   [3] GREEK PSILI AND VARIA..GREEK PSILI AND PERISPOMENI
+1FD0..1FD3    ; Grapheme_Base # L&   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FDB    ; Grapheme_Base # L&   [6] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FDD..1FDF    ; Grapheme_Base # Sk   [3] GREEK DASIA AND VARIA..GREEK DASIA AND PERISPOMENI
+1FE0..1FEC    ; Grapheme_Base # L&  [13] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FED..1FEF    ; Grapheme_Base # Sk   [3] GREEK DIALYTIKA AND VARIA..GREEK VARIA
+1FF2..1FF4    ; Grapheme_Base # L&   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FFC    ; Grapheme_Base # L&   [7] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+1FFD..1FFE    ; Grapheme_Base # Sk   [2] GREEK OXIA..GREEK DASIA
+2000..200A    ; Grapheme_Base # Zs  [11] EN QUAD..HAIR SPACE
+2010..2015    ; Grapheme_Base # Pd   [6] HYPHEN..HORIZONTAL BAR
+2016..2017    ; Grapheme_Base # Po   [2] DOUBLE VERTICAL LINE..DOUBLE LOW LINE
+2018          ; Grapheme_Base # Pi       LEFT SINGLE QUOTATION MARK
+2019          ; Grapheme_Base # Pf       RIGHT SINGLE QUOTATION MARK
+201A          ; Grapheme_Base # Ps       SINGLE LOW-9 QUOTATION MARK
+201B..201C    ; Grapheme_Base # Pi   [2] SINGLE HIGH-REVERSED-9 QUOTATION MARK..LEFT DOUBLE QUOTATION MARK
+201D          ; Grapheme_Base # Pf       RIGHT DOUBLE QUOTATION MARK
+201E          ; Grapheme_Base # Ps       DOUBLE LOW-9 QUOTATION MARK
+201F          ; Grapheme_Base # Pi       DOUBLE HIGH-REVERSED-9 QUOTATION MARK
+2020..2027    ; Grapheme_Base # Po   [8] DAGGER..HYPHENATION POINT
+202F          ; Grapheme_Base # Zs       NARROW NO-BREAK SPACE
+2030..2038    ; Grapheme_Base # Po   [9] PER MILLE SIGN..CARET
+2039          ; Grapheme_Base # Pi       SINGLE LEFT-POINTING ANGLE QUOTATION MARK
+203A          ; Grapheme_Base # Pf       SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
+203B..203E    ; Grapheme_Base # Po   [4] REFERENCE MARK..OVERLINE
+203F..2040    ; Grapheme_Base # Pc   [2] UNDERTIE..CHARACTER TIE
+2041..2043    ; Grapheme_Base # Po   [3] CARET INSERTION POINT..HYPHEN BULLET
+2044          ; Grapheme_Base # Sm       FRACTION SLASH
+2045          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET WITH QUILL
+2046          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET WITH QUILL
+2047..2051    ; Grapheme_Base # Po  [11] DOUBLE QUESTION MARK..TWO ASTERISKS ALIGNED VERTICALLY
+2052          ; Grapheme_Base # Sm       COMMERCIAL MINUS SIGN
+2053          ; Grapheme_Base # Po       SWUNG DASH
+2054          ; Grapheme_Base # Pc       INVERTED UNDERTIE
+2055..205E    ; Grapheme_Base # Po  [10] FLOWER PUNCTUATION MARK..VERTICAL FOUR DOTS
+205F          ; Grapheme_Base # Zs       MEDIUM MATHEMATICAL SPACE
+2070          ; Grapheme_Base # No       SUPERSCRIPT ZERO
+2071          ; Grapheme_Base # Lm       SUPERSCRIPT LATIN SMALL LETTER I
+2074..2079    ; Grapheme_Base # No   [6] SUPERSCRIPT FOUR..SUPERSCRIPT NINE
+207A..207C    ; Grapheme_Base # Sm   [3] SUPERSCRIPT PLUS SIGN..SUPERSCRIPT EQUALS SIGN
+207D          ; Grapheme_Base # Ps       SUPERSCRIPT LEFT PARENTHESIS
+207E          ; Grapheme_Base # Pe       SUPERSCRIPT RIGHT PARENTHESIS
+207F          ; Grapheme_Base # Lm       SUPERSCRIPT LATIN SMALL LETTER N
+2080..2089    ; Grapheme_Base # No  [10] SUBSCRIPT ZERO..SUBSCRIPT NINE
+208A..208C    ; Grapheme_Base # Sm   [3] SUBSCRIPT PLUS SIGN..SUBSCRIPT EQUALS SIGN
+208D          ; Grapheme_Base # Ps       SUBSCRIPT LEFT PARENTHESIS
+208E          ; Grapheme_Base # Pe       SUBSCRIPT RIGHT PARENTHESIS
+2090..209C    ; Grapheme_Base # Lm  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+20A0..20C0    ; Grapheme_Base # Sc  [33] EURO-CURRENCY SIGN..SOM SIGN
+2100..2101    ; Grapheme_Base # So   [2] ACCOUNT OF..ADDRESSED TO THE SUBJECT
+2102          ; Grapheme_Base # L&       DOUBLE-STRUCK CAPITAL C
+2103..2106    ; Grapheme_Base # So   [4] DEGREE CELSIUS..CADA UNA
+2107          ; Grapheme_Base # L&       EULER CONSTANT
+2108..2109    ; Grapheme_Base # So   [2] SCRUPLE..DEGREE FAHRENHEIT
+210A..2113    ; Grapheme_Base # L&  [10] SCRIPT SMALL G..SCRIPT SMALL L
+2114          ; Grapheme_Base # So       L B BAR SYMBOL
+2115          ; Grapheme_Base # L&       DOUBLE-STRUCK CAPITAL N
+2116..2117    ; Grapheme_Base # So   [2] NUMERO SIGN..SOUND RECORDING COPYRIGHT
+2118          ; Grapheme_Base # Sm       SCRIPT CAPITAL P
+2119..211D    ; Grapheme_Base # L&   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+211E..2123    ; Grapheme_Base # So   [6] PRESCRIPTION TAKE..VERSICLE
+2124          ; Grapheme_Base # L&       DOUBLE-STRUCK CAPITAL Z
+2125          ; Grapheme_Base # So       OUNCE SIGN
+2126          ; Grapheme_Base # L&       OHM SIGN
+2127          ; Grapheme_Base # So       INVERTED OHM SIGN
+2128          ; Grapheme_Base # L&       BLACK-LETTER CAPITAL Z
+2129          ; Grapheme_Base # So       TURNED GREEK SMALL LETTER IOTA
+212A..212D    ; Grapheme_Base # L&   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+212E          ; Grapheme_Base # So       ESTIMATED SYMBOL
+212F..2134    ; Grapheme_Base # L&   [6] SCRIPT SMALL E..SCRIPT SMALL O
+2135..2138    ; Grapheme_Base # Lo   [4] ALEF SYMBOL..DALET SYMBOL
+2139          ; Grapheme_Base # L&       INFORMATION SOURCE
+213A..213B    ; Grapheme_Base # So   [2] ROTATED CAPITAL Q..FACSIMILE SIGN
+213C..213F    ; Grapheme_Base # L&   [4] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK CAPITAL PI
+2140..2144    ; Grapheme_Base # Sm   [5] DOUBLE-STRUCK N-ARY SUMMATION..TURNED SANS-SERIF CAPITAL Y
+2145..2149    ; Grapheme_Base # L&   [5] DOUBLE-STRUCK ITALIC CAPITAL D..DOUBLE-STRUCK ITALIC SMALL J
+214A          ; Grapheme_Base # So       PROPERTY LINE
+214B          ; Grapheme_Base # Sm       TURNED AMPERSAND
+214C..214D    ; Grapheme_Base # So   [2] PER SIGN..AKTIESELSKAB
+214E          ; Grapheme_Base # L&       TURNED SMALL F
+214F          ; Grapheme_Base # So       SYMBOL FOR SAMARITAN SOURCE
+2150..215F    ; Grapheme_Base # No  [16] VULGAR FRACTION ONE SEVENTH..FRACTION NUMERATOR ONE
+2160..2182    ; Grapheme_Base # Nl  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2183..2184    ; Grapheme_Base # L&   [2] ROMAN NUMERAL REVERSED ONE HUNDRED..LATIN SMALL LETTER REVERSED C
+2185..2188    ; Grapheme_Base # Nl   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+2189          ; Grapheme_Base # No       VULGAR FRACTION ZERO THIRDS
+218A..218B    ; Grapheme_Base # So   [2] TURNED DIGIT TWO..TURNED DIGIT THREE
+2190..2194    ; Grapheme_Base # Sm   [5] LEFTWARDS ARROW..LEFT RIGHT ARROW
+2195..2199    ; Grapheme_Base # So   [5] UP DOWN ARROW..SOUTH WEST ARROW
+219A..219B    ; Grapheme_Base # Sm   [2] LEFTWARDS ARROW WITH STROKE..RIGHTWARDS ARROW WITH STROKE
+219C..219F    ; Grapheme_Base # So   [4] LEFTWARDS WAVE ARROW..UPWARDS TWO HEADED ARROW
+21A0          ; Grapheme_Base # Sm       RIGHTWARDS TWO HEADED ARROW
+21A1..21A2    ; Grapheme_Base # So   [2] DOWNWARDS TWO HEADED ARROW..LEFTWARDS ARROW WITH TAIL
+21A3          ; Grapheme_Base # Sm       RIGHTWARDS ARROW WITH TAIL
+21A4..21A5    ; Grapheme_Base # So   [2] LEFTWARDS ARROW FROM BAR..UPWARDS ARROW FROM BAR
+21A6          ; Grapheme_Base # Sm       RIGHTWARDS ARROW FROM BAR
+21A7..21AD    ; Grapheme_Base # So   [7] DOWNWARDS ARROW FROM BAR..LEFT RIGHT WAVE ARROW
+21AE          ; Grapheme_Base # Sm       LEFT RIGHT ARROW WITH STROKE
+21AF..21CD    ; Grapheme_Base # So  [31] DOWNWARDS ZIGZAG ARROW..LEFTWARDS DOUBLE ARROW WITH STROKE
+21CE..21CF    ; Grapheme_Base # Sm   [2] LEFT RIGHT DOUBLE ARROW WITH STROKE..RIGHTWARDS DOUBLE ARROW WITH STROKE
+21D0..21D1    ; Grapheme_Base # So   [2] LEFTWARDS DOUBLE ARROW..UPWARDS DOUBLE ARROW
+21D2          ; Grapheme_Base # Sm       RIGHTWARDS DOUBLE ARROW
+21D3          ; Grapheme_Base # So       DOWNWARDS DOUBLE ARROW
+21D4          ; Grapheme_Base # Sm       LEFT RIGHT DOUBLE ARROW
+21D5..21F3    ; Grapheme_Base # So  [31] UP DOWN DOUBLE ARROW..UP DOWN WHITE ARROW
+21F4..22FF    ; Grapheme_Base # Sm [268] RIGHT ARROW WITH SMALL CIRCLE..Z NOTATION BAG MEMBERSHIP
+2300..2307    ; Grapheme_Base # So   [8] DIAMETER SIGN..WAVY LINE
+2308          ; Grapheme_Base # Ps       LEFT CEILING
+2309          ; Grapheme_Base # Pe       RIGHT CEILING
+230A          ; Grapheme_Base # Ps       LEFT FLOOR
+230B          ; Grapheme_Base # Pe       RIGHT FLOOR
+230C..231F    ; Grapheme_Base # So  [20] BOTTOM RIGHT CROP..BOTTOM RIGHT CORNER
+2320..2321    ; Grapheme_Base # Sm   [2] TOP HALF INTEGRAL..BOTTOM HALF INTEGRAL
+2322..2328    ; Grapheme_Base # So   [7] FROWN..KEYBOARD
+2329          ; Grapheme_Base # Ps       LEFT-POINTING ANGLE BRACKET
+232A          ; Grapheme_Base # Pe       RIGHT-POINTING ANGLE BRACKET
+232B..237B    ; Grapheme_Base # So  [81] ERASE TO THE LEFT..NOT CHECK MARK
+237C          ; Grapheme_Base # Sm       RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW
+237D..239A    ; Grapheme_Base # So  [30] SHOULDERED OPEN BOX..CLEAR SCREEN SYMBOL
+239B..23B3    ; Grapheme_Base # Sm  [25] LEFT PARENTHESIS UPPER HOOK..SUMMATION BOTTOM
+23B4..23DB    ; Grapheme_Base # So  [40] TOP SQUARE BRACKET..FUSE
+23DC..23E1    ; Grapheme_Base # Sm   [6] TOP PARENTHESIS..BOTTOM TORTOISE SHELL BRACKET
+23E2..2426    ; Grapheme_Base # So  [69] WHITE TRAPEZIUM..SYMBOL FOR SUBSTITUTE FORM TWO
+2440..244A    ; Grapheme_Base # So  [11] OCR HOOK..OCR DOUBLE BACKSLASH
+2460..249B    ; Grapheme_Base # No  [60] CIRCLED DIGIT ONE..NUMBER TWENTY FULL STOP
+249C..24E9    ; Grapheme_Base # So  [78] PARENTHESIZED LATIN SMALL LETTER A..CIRCLED LATIN SMALL LETTER Z
+24EA..24FF    ; Grapheme_Base # No  [22] CIRCLED DIGIT ZERO..NEGATIVE CIRCLED DIGIT ZERO
+2500..25B6    ; Grapheme_Base # So [183] BOX DRAWINGS LIGHT HORIZONTAL..BLACK RIGHT-POINTING TRIANGLE
+25B7          ; Grapheme_Base # Sm       WHITE RIGHT-POINTING TRIANGLE
+25B8..25C0    ; Grapheme_Base # So   [9] BLACK RIGHT-POINTING SMALL TRIANGLE..BLACK LEFT-POINTING TRIANGLE
+25C1          ; Grapheme_Base # Sm       WHITE LEFT-POINTING TRIANGLE
+25C2..25F7    ; Grapheme_Base # So  [54] BLACK LEFT-POINTING SMALL TRIANGLE..WHITE CIRCLE WITH UPPER RIGHT QUADRANT
+25F8..25FF    ; Grapheme_Base # Sm   [8] UPPER LEFT TRIANGLE..LOWER RIGHT TRIANGLE
+2600..266E    ; Grapheme_Base # So [111] BLACK SUN WITH RAYS..MUSIC NATURAL SIGN
+266F          ; Grapheme_Base # Sm       MUSIC SHARP SIGN
+2670..2767    ; Grapheme_Base # So [248] WEST SYRIAC CROSS..ROTATED FLORAL HEART BULLET
+2768          ; Grapheme_Base # Ps       MEDIUM LEFT PARENTHESIS ORNAMENT
+2769          ; Grapheme_Base # Pe       MEDIUM RIGHT PARENTHESIS ORNAMENT
+276A          ; Grapheme_Base # Ps       MEDIUM FLATTENED LEFT PARENTHESIS ORNAMENT
+276B          ; Grapheme_Base # Pe       MEDIUM FLATTENED RIGHT PARENTHESIS ORNAMENT
+276C          ; Grapheme_Base # Ps       MEDIUM LEFT-POINTING ANGLE BRACKET ORNAMENT
+276D          ; Grapheme_Base # Pe       MEDIUM RIGHT-POINTING ANGLE BRACKET ORNAMENT
+276E          ; Grapheme_Base # Ps       HEAVY LEFT-POINTING ANGLE QUOTATION MARK ORNAMENT
+276F          ; Grapheme_Base # Pe       HEAVY RIGHT-POINTING ANGLE QUOTATION MARK ORNAMENT
+2770          ; Grapheme_Base # Ps       HEAVY LEFT-POINTING ANGLE BRACKET ORNAMENT
+2771          ; Grapheme_Base # Pe       HEAVY RIGHT-POINTING ANGLE BRACKET ORNAMENT
+2772          ; Grapheme_Base # Ps       LIGHT LEFT TORTOISE SHELL BRACKET ORNAMENT
+2773          ; Grapheme_Base # Pe       LIGHT RIGHT TORTOISE SHELL BRACKET ORNAMENT
+2774          ; Grapheme_Base # Ps       MEDIUM LEFT CURLY BRACKET ORNAMENT
+2775          ; Grapheme_Base # Pe       MEDIUM RIGHT CURLY BRACKET ORNAMENT
+2776..2793    ; Grapheme_Base # No  [30] DINGBAT NEGATIVE CIRCLED DIGIT ONE..DINGBAT NEGATIVE CIRCLED SANS-SERIF NUMBER TEN
+2794..27BF    ; Grapheme_Base # So  [44] HEAVY WIDE-HEADED RIGHTWARDS ARROW..DOUBLE CURLY LOOP
+27C0..27C4    ; Grapheme_Base # Sm   [5] THREE DIMENSIONAL ANGLE..OPEN SUPERSET
+27C5          ; Grapheme_Base # Ps       LEFT S-SHAPED BAG DELIMITER
+27C6          ; Grapheme_Base # Pe       RIGHT S-SHAPED BAG DELIMITER
+27C7..27E5    ; Grapheme_Base # Sm  [31] OR WITH DOT INSIDE..WHITE SQUARE WITH RIGHTWARDS TICK
+27E6          ; Grapheme_Base # Ps       MATHEMATICAL LEFT WHITE SQUARE BRACKET
+27E7          ; Grapheme_Base # Pe       MATHEMATICAL RIGHT WHITE SQUARE BRACKET
+27E8          ; Grapheme_Base # Ps       MATHEMATICAL LEFT ANGLE BRACKET
+27E9          ; Grapheme_Base # Pe       MATHEMATICAL RIGHT ANGLE BRACKET
+27EA          ; Grapheme_Base # Ps       MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
+27EB          ; Grapheme_Base # Pe       MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
+27EC          ; Grapheme_Base # Ps       MATHEMATICAL LEFT WHITE TORTOISE SHELL BRACKET
+27ED          ; Grapheme_Base # Pe       MATHEMATICAL RIGHT WHITE TORTOISE SHELL BRACKET
+27EE          ; Grapheme_Base # Ps       MATHEMATICAL LEFT FLATTENED PARENTHESIS
+27EF          ; Grapheme_Base # Pe       MATHEMATICAL RIGHT FLATTENED PARENTHESIS
+27F0..27FF    ; Grapheme_Base # Sm  [16] UPWARDS QUADRUPLE ARROW..LONG RIGHTWARDS SQUIGGLE ARROW
+2800..28FF    ; Grapheme_Base # So [256] BRAILLE PATTERN BLANK..BRAILLE PATTERN DOTS-12345678
+2900..2982    ; Grapheme_Base # Sm [131] RIGHTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE..Z NOTATION TYPE COLON
+2983          ; Grapheme_Base # Ps       LEFT WHITE CURLY BRACKET
+2984          ; Grapheme_Base # Pe       RIGHT WHITE CURLY BRACKET
+2985          ; Grapheme_Base # Ps       LEFT WHITE PARENTHESIS
+2986          ; Grapheme_Base # Pe       RIGHT WHITE PARENTHESIS
+2987          ; Grapheme_Base # Ps       Z NOTATION LEFT IMAGE BRACKET
+2988          ; Grapheme_Base # Pe       Z NOTATION RIGHT IMAGE BRACKET
+2989          ; Grapheme_Base # Ps       Z NOTATION LEFT BINDING BRACKET
+298A          ; Grapheme_Base # Pe       Z NOTATION RIGHT BINDING BRACKET
+298B          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET WITH UNDERBAR
+298C          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET WITH UNDERBAR
+298D          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET WITH TICK IN TOP CORNER
+298E          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET WITH TICK IN BOTTOM CORNER
+298F          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET WITH TICK IN BOTTOM CORNER
+2990          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET WITH TICK IN TOP CORNER
+2991          ; Grapheme_Base # Ps       LEFT ANGLE BRACKET WITH DOT
+2992          ; Grapheme_Base # Pe       RIGHT ANGLE BRACKET WITH DOT
+2993          ; Grapheme_Base # Ps       LEFT ARC LESS-THAN BRACKET
+2994          ; Grapheme_Base # Pe       RIGHT ARC GREATER-THAN BRACKET
+2995          ; Grapheme_Base # Ps       DOUBLE LEFT ARC GREATER-THAN BRACKET
+2996          ; Grapheme_Base # Pe       DOUBLE RIGHT ARC LESS-THAN BRACKET
+2997          ; Grapheme_Base # Ps       LEFT BLACK TORTOISE SHELL BRACKET
+2998          ; Grapheme_Base # Pe       RIGHT BLACK TORTOISE SHELL BRACKET
+2999..29D7    ; Grapheme_Base # Sm  [63] DOTTED FENCE..BLACK HOURGLASS
+29D8          ; Grapheme_Base # Ps       LEFT WIGGLY FENCE
+29D9          ; Grapheme_Base # Pe       RIGHT WIGGLY FENCE
+29DA          ; Grapheme_Base # Ps       LEFT DOUBLE WIGGLY FENCE
+29DB          ; Grapheme_Base # Pe       RIGHT DOUBLE WIGGLY FENCE
+29DC..29FB    ; Grapheme_Base # Sm  [32] INCOMPLETE INFINITY..TRIPLE PLUS
+29FC          ; Grapheme_Base # Ps       LEFT-POINTING CURVED ANGLE BRACKET
+29FD          ; Grapheme_Base # Pe       RIGHT-POINTING CURVED ANGLE BRACKET
+29FE..2AFF    ; Grapheme_Base # Sm [258] TINY..N-ARY WHITE VERTICAL BAR
+2B00..2B2F    ; Grapheme_Base # So  [48] NORTH EAST WHITE ARROW..WHITE VERTICAL ELLIPSE
+2B30..2B44    ; Grapheme_Base # Sm  [21] LEFT ARROW WITH SMALL CIRCLE..RIGHTWARDS ARROW THROUGH SUPERSET
+2B45..2B46    ; Grapheme_Base # So   [2] LEFTWARDS QUADRUPLE ARROW..RIGHTWARDS QUADRUPLE ARROW
+2B47..2B4C    ; Grapheme_Base # Sm   [6] REVERSE TILDE OPERATOR ABOVE RIGHTWARDS ARROW..RIGHTWARDS ARROW ABOVE REVERSE TILDE OPERATOR
+2B4D..2B73    ; Grapheme_Base # So  [39] DOWNWARDS TRIANGLE-HEADED ZIGZAG ARROW..DOWNWARDS TRIANGLE-HEADED ARROW TO BAR
+2B76..2B95    ; Grapheme_Base # So  [32] NORTH WEST TRIANGLE-HEADED ARROW TO BAR..RIGHTWARDS BLACK ARROW
+2B97..2BFF    ; Grapheme_Base # So [105] SYMBOL FOR TYPE A ELECTRONICS..HELLSCHREIBER PAUSE SYMBOL
+2C00..2C7B    ; Grapheme_Base # L& [124] GLAGOLITIC CAPITAL LETTER AZU..LATIN LETTER SMALL CAPITAL TURNED E
+2C7C..2C7D    ; Grapheme_Base # Lm   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2C7E..2CE4    ; Grapheme_Base # L& [103] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC SYMBOL KAI
+2CE5..2CEA    ; Grapheme_Base # So   [6] COPTIC SYMBOL MI RO..COPTIC SYMBOL SHIMA SIMA
+2CEB..2CEE    ; Grapheme_Base # L&   [4] COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI..COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF2..2CF3    ; Grapheme_Base # L&   [2] COPTIC CAPITAL LETTER BOHAIRIC KHEI..COPTIC SMALL LETTER BOHAIRIC KHEI
+2CF9..2CFC    ; Grapheme_Base # Po   [4] COPTIC OLD NUBIAN FULL STOP..COPTIC OLD NUBIAN VERSE DIVIDER
+2CFD          ; Grapheme_Base # No       COPTIC FRACTION ONE HALF
+2CFE..2CFF    ; Grapheme_Base # Po   [2] COPTIC FULL STOP..COPTIC MORPHOLOGICAL DIVIDER
+2D00..2D25    ; Grapheme_Base # L&  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Grapheme_Base # L&       GEORGIAN SMALL LETTER YN
+2D2D          ; Grapheme_Base # L&       GEORGIAN SMALL LETTER AEN
+2D30..2D67    ; Grapheme_Base # Lo  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D6F          ; Grapheme_Base # Lm       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2D70          ; Grapheme_Base # Po       TIFINAGH SEPARATOR MARK
+2D80..2D96    ; Grapheme_Base # Lo  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+2E00..2E01    ; Grapheme_Base # Po   [2] RIGHT ANGLE SUBSTITUTION MARKER..RIGHT ANGLE DOTTED SUBSTITUTION MARKER
+2E02          ; Grapheme_Base # Pi       LEFT SUBSTITUTION BRACKET
+2E03          ; Grapheme_Base # Pf       RIGHT SUBSTITUTION BRACKET
+2E04          ; Grapheme_Base # Pi       LEFT DOTTED SUBSTITUTION BRACKET
+2E05          ; Grapheme_Base # Pf       RIGHT DOTTED SUBSTITUTION BRACKET
+2E06..2E08    ; Grapheme_Base # Po   [3] RAISED INTERPOLATION MARKER..DOTTED TRANSPOSITION MARKER
+2E09          ; Grapheme_Base # Pi       LEFT TRANSPOSITION BRACKET
+2E0A          ; Grapheme_Base # Pf       RIGHT TRANSPOSITION BRACKET
+2E0B          ; Grapheme_Base # Po       RAISED SQUARE
+2E0C          ; Grapheme_Base # Pi       LEFT RAISED OMISSION BRACKET
+2E0D          ; Grapheme_Base # Pf       RIGHT RAISED OMISSION BRACKET
+2E0E..2E16    ; Grapheme_Base # Po   [9] EDITORIAL CORONIS..DOTTED RIGHT-POINTING ANGLE
+2E17          ; Grapheme_Base # Pd       DOUBLE OBLIQUE HYPHEN
+2E18..2E19    ; Grapheme_Base # Po   [2] INVERTED INTERROBANG..PALM BRANCH
+2E1A          ; Grapheme_Base # Pd       HYPHEN WITH DIAERESIS
+2E1B          ; Grapheme_Base # Po       TILDE WITH RING ABOVE
+2E1C          ; Grapheme_Base # Pi       LEFT LOW PARAPHRASE BRACKET
+2E1D          ; Grapheme_Base # Pf       RIGHT LOW PARAPHRASE BRACKET
+2E1E..2E1F    ; Grapheme_Base # Po   [2] TILDE WITH DOT ABOVE..TILDE WITH DOT BELOW
+2E20          ; Grapheme_Base # Pi       LEFT VERTICAL BAR WITH QUILL
+2E21          ; Grapheme_Base # Pf       RIGHT VERTICAL BAR WITH QUILL
+2E22          ; Grapheme_Base # Ps       TOP LEFT HALF BRACKET
+2E23          ; Grapheme_Base # Pe       TOP RIGHT HALF BRACKET
+2E24          ; Grapheme_Base # Ps       BOTTOM LEFT HALF BRACKET
+2E25          ; Grapheme_Base # Pe       BOTTOM RIGHT HALF BRACKET
+2E26          ; Grapheme_Base # Ps       LEFT SIDEWAYS U BRACKET
+2E27          ; Grapheme_Base # Pe       RIGHT SIDEWAYS U BRACKET
+2E28          ; Grapheme_Base # Ps       LEFT DOUBLE PARENTHESIS
+2E29          ; Grapheme_Base # Pe       RIGHT DOUBLE PARENTHESIS
+2E2A..2E2E    ; Grapheme_Base # Po   [5] TWO DOTS OVER ONE DOT PUNCTUATION..REVERSED QUESTION MARK
+2E2F          ; Grapheme_Base # Lm       VERTICAL TILDE
+2E30..2E39    ; Grapheme_Base # Po  [10] RING POINT..TOP HALF SECTION SIGN
+2E3A..2E3B    ; Grapheme_Base # Pd   [2] TWO-EM DASH..THREE-EM DASH
+2E3C..2E3F    ; Grapheme_Base # Po   [4] STENOGRAPHIC FULL STOP..CAPITULUM
+2E40          ; Grapheme_Base # Pd       DOUBLE HYPHEN
+2E41          ; Grapheme_Base # Po       REVERSED COMMA
+2E42          ; Grapheme_Base # Ps       DOUBLE LOW-REVERSED-9 QUOTATION MARK
+2E43..2E4F    ; Grapheme_Base # Po  [13] DASH WITH LEFT UPTURN..CORNISH VERSE DIVIDER
+2E50..2E51    ; Grapheme_Base # So   [2] CROSS PATTY WITH RIGHT CROSSBAR..CROSS PATTY WITH LEFT CROSSBAR
+2E52..2E54    ; Grapheme_Base # Po   [3] TIRONIAN SIGN CAPITAL ET..MEDIEVAL QUESTION MARK
+2E55          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET WITH STROKE
+2E56          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET WITH STROKE
+2E57          ; Grapheme_Base # Ps       LEFT SQUARE BRACKET WITH DOUBLE STROKE
+2E58          ; Grapheme_Base # Pe       RIGHT SQUARE BRACKET WITH DOUBLE STROKE
+2E59          ; Grapheme_Base # Ps       TOP HALF LEFT PARENTHESIS
+2E5A          ; Grapheme_Base # Pe       TOP HALF RIGHT PARENTHESIS
+2E5B          ; Grapheme_Base # Ps       BOTTOM HALF LEFT PARENTHESIS
+2E5C          ; Grapheme_Base # Pe       BOTTOM HALF RIGHT PARENTHESIS
+2E5D          ; Grapheme_Base # Pd       OBLIQUE HYPHEN
+2E80..2E99    ; Grapheme_Base # So  [26] CJK RADICAL REPEAT..CJK RADICAL RAP
+2E9B..2EF3    ; Grapheme_Base # So  [89] CJK RADICAL CHOKE..CJK RADICAL C-SIMPLIFIED TURTLE
+2F00..2FD5    ; Grapheme_Base # So [214] KANGXI RADICAL ONE..KANGXI RADICAL FLUTE
+2FF0..2FFB    ; Grapheme_Base # So  [12] IDEOGRAPHIC DESCRIPTION CHARACTER LEFT TO RIGHT..IDEOGRAPHIC DESCRIPTION CHARACTER OVERLAID
+3000          ; Grapheme_Base # Zs       IDEOGRAPHIC SPACE
+3001..3003    ; Grapheme_Base # Po   [3] IDEOGRAPHIC COMMA..DITTO MARK
+3004          ; Grapheme_Base # So       JAPANESE INDUSTRIAL STANDARD SYMBOL
+3005          ; Grapheme_Base # Lm       IDEOGRAPHIC ITERATION MARK
+3006          ; Grapheme_Base # Lo       IDEOGRAPHIC CLOSING MARK
+3007          ; Grapheme_Base # Nl       IDEOGRAPHIC NUMBER ZERO
+3008          ; Grapheme_Base # Ps       LEFT ANGLE BRACKET
+3009          ; Grapheme_Base # Pe       RIGHT ANGLE BRACKET
+300A          ; Grapheme_Base # Ps       LEFT DOUBLE ANGLE BRACKET
+300B          ; Grapheme_Base # Pe       RIGHT DOUBLE ANGLE BRACKET
+300C          ; Grapheme_Base # Ps       LEFT CORNER BRACKET
+300D          ; Grapheme_Base # Pe       RIGHT CORNER BRACKET
+300E          ; Grapheme_Base # Ps       LEFT WHITE CORNER BRACKET
+300F          ; Grapheme_Base # Pe       RIGHT WHITE CORNER BRACKET
+3010          ; Grapheme_Base # Ps       LEFT BLACK LENTICULAR BRACKET
+3011          ; Grapheme_Base # Pe       RIGHT BLACK LENTICULAR BRACKET
+3012..3013    ; Grapheme_Base # So   [2] POSTAL MARK..GETA MARK
+3014          ; Grapheme_Base # Ps       LEFT TORTOISE SHELL BRACKET
+3015          ; Grapheme_Base # Pe       RIGHT TORTOISE SHELL BRACKET
+3016          ; Grapheme_Base # Ps       LEFT WHITE LENTICULAR BRACKET
+3017          ; Grapheme_Base # Pe       RIGHT WHITE LENTICULAR BRACKET
+3018          ; Grapheme_Base # Ps       LEFT WHITE TORTOISE SHELL BRACKET
+3019          ; Grapheme_Base # Pe       RIGHT WHITE TORTOISE SHELL BRACKET
+301A          ; Grapheme_Base # Ps       LEFT WHITE SQUARE BRACKET
+301B          ; Grapheme_Base # Pe       RIGHT WHITE SQUARE BRACKET
+301C          ; Grapheme_Base # Pd       WAVE DASH
+301D          ; Grapheme_Base # Ps       REVERSED DOUBLE PRIME QUOTATION MARK
+301E..301F    ; Grapheme_Base # Pe   [2] DOUBLE PRIME QUOTATION MARK..LOW DOUBLE PRIME QUOTATION MARK
+3020          ; Grapheme_Base # So       POSTAL MARK FACE
+3021..3029    ; Grapheme_Base # Nl   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+3030          ; Grapheme_Base # Pd       WAVY DASH
+3031..3035    ; Grapheme_Base # Lm   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+3036..3037    ; Grapheme_Base # So   [2] CIRCLED POSTAL MARK..IDEOGRAPHIC TELEGRAPH LINE FEED SEPARATOR SYMBOL
+3038..303A    ; Grapheme_Base # Nl   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+303B          ; Grapheme_Base # Lm       VERTICAL IDEOGRAPHIC ITERATION MARK
+303C          ; Grapheme_Base # Lo       MASU MARK
+303D          ; Grapheme_Base # Po       PART ALTERNATION MARK
+303E..303F    ; Grapheme_Base # So   [2] IDEOGRAPHIC VARIATION INDICATOR..IDEOGRAPHIC HALF FILL SPACE
+3041..3096    ; Grapheme_Base # Lo  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+309B..309C    ; Grapheme_Base # Sk   [2] KATAKANA-HIRAGANA VOICED SOUND MARK..KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+309D..309E    ; Grapheme_Base # Lm   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+309F          ; Grapheme_Base # Lo       HIRAGANA DIGRAPH YORI
+30A0          ; Grapheme_Base # Pd       KATAKANA-HIRAGANA DOUBLE HYPHEN
+30A1..30FA    ; Grapheme_Base # Lo  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FB          ; Grapheme_Base # Po       KATAKANA MIDDLE DOT
+30FC..30FE    ; Grapheme_Base # Lm   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+30FF          ; Grapheme_Base # Lo       KATAKANA DIGRAPH KOTO
+3105..312F    ; Grapheme_Base # Lo  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; Grapheme_Base # Lo  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+3190..3191    ; Grapheme_Base # So   [2] IDEOGRAPHIC ANNOTATION LINKING MARK..IDEOGRAPHIC ANNOTATION REVERSE MARK
+3192..3195    ; Grapheme_Base # No   [4] IDEOGRAPHIC ANNOTATION ONE MARK..IDEOGRAPHIC ANNOTATION FOUR MARK
+3196..319F    ; Grapheme_Base # So  [10] IDEOGRAPHIC ANNOTATION TOP MARK..IDEOGRAPHIC ANNOTATION MAN MARK
+31A0..31BF    ; Grapheme_Base # Lo  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31C0..31E3    ; Grapheme_Base # So  [36] CJK STROKE T..CJK STROKE Q
+31F0..31FF    ; Grapheme_Base # Lo  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3200..321E    ; Grapheme_Base # So  [31] PARENTHESIZED HANGUL KIYEOK..PARENTHESIZED KOREAN CHARACTER O HU
+3220..3229    ; Grapheme_Base # No  [10] PARENTHESIZED IDEOGRAPH ONE..PARENTHESIZED IDEOGRAPH TEN
+322A..3247    ; Grapheme_Base # So  [30] PARENTHESIZED IDEOGRAPH MOON..CIRCLED IDEOGRAPH KOTO
+3248..324F    ; Grapheme_Base # No   [8] CIRCLED NUMBER TEN ON BLACK SQUARE..CIRCLED NUMBER EIGHTY ON BLACK SQUARE
+3250          ; Grapheme_Base # So       PARTNERSHIP SIGN
+3251..325F    ; Grapheme_Base # No  [15] CIRCLED NUMBER TWENTY ONE..CIRCLED NUMBER THIRTY FIVE
+3260..327F    ; Grapheme_Base # So  [32] CIRCLED HANGUL KIYEOK..KOREAN STANDARD SYMBOL
+3280..3289    ; Grapheme_Base # No  [10] CIRCLED IDEOGRAPH ONE..CIRCLED IDEOGRAPH TEN
+328A..32B0    ; Grapheme_Base # So  [39] CIRCLED IDEOGRAPH MOON..CIRCLED IDEOGRAPH NIGHT
+32B1..32BF    ; Grapheme_Base # No  [15] CIRCLED NUMBER THIRTY SIX..CIRCLED NUMBER FIFTY
+32C0..33FF    ; Grapheme_Base # So [320] IDEOGRAPHIC TELEGRAPH SYMBOL FOR JANUARY..SQUARE GAL
+3400..4DBF    ; Grapheme_Base # Lo [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4DC0..4DFF    ; Grapheme_Base # So  [64] HEXAGRAM FOR THE CREATIVE HEAVEN..HEXAGRAM FOR BEFORE COMPLETION
+4E00..A014    ; Grapheme_Base # Lo [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A015          ; Grapheme_Base # Lm       YI SYLLABLE WU
+A016..A48C    ; Grapheme_Base # Lo [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A490..A4C6    ; Grapheme_Base # So  [55] YI RADICAL QOT..YI RADICAL KE
+A4D0..A4F7    ; Grapheme_Base # Lo  [40] LISU LETTER BA..LISU LETTER OE
+A4F8..A4FD    ; Grapheme_Base # Lm   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A4FE..A4FF    ; Grapheme_Base # Po   [2] LISU PUNCTUATION COMMA..LISU PUNCTUATION FULL STOP
+A500..A60B    ; Grapheme_Base # Lo [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A60C          ; Grapheme_Base # Lm       VAI SYLLABLE LENGTHENER
+A60D..A60F    ; Grapheme_Base # Po   [3] VAI COMMA..VAI QUESTION MARK
+A610..A61F    ; Grapheme_Base # Lo  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A620..A629    ; Grapheme_Base # Nd  [10] VAI DIGIT ZERO..VAI DIGIT NINE
+A62A..A62B    ; Grapheme_Base # Lo   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A640..A66D    ; Grapheme_Base # L&  [46] CYRILLIC CAPITAL LETTER ZEMLYA..CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A66E          ; Grapheme_Base # Lo       CYRILLIC LETTER MULTIOCULAR O
+A673          ; Grapheme_Base # Po       SLAVONIC ASTERISK
+A67E          ; Grapheme_Base # Po       CYRILLIC KAVYKA
+A67F          ; Grapheme_Base # Lm       CYRILLIC PAYEROK
+A680..A69B    ; Grapheme_Base # L&  [28] CYRILLIC CAPITAL LETTER DWE..CYRILLIC SMALL LETTER CROSSED O
+A69C..A69D    ; Grapheme_Base # Lm   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A6A0..A6E5    ; Grapheme_Base # Lo  [70] BAMUM LETTER A..BAMUM LETTER KI
+A6E6..A6EF    ; Grapheme_Base # Nl  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+A6F2..A6F7    ; Grapheme_Base # Po   [6] BAMUM NJAEMLI..BAMUM QUESTION MARK
+A700..A716    ; Grapheme_Base # Sk  [23] MODIFIER LETTER CHINESE TONE YIN PING..MODIFIER LETTER EXTRA-LOW LEFT-STEM TONE BAR
+A717..A71F    ; Grapheme_Base # Lm   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A720..A721    ; Grapheme_Base # Sk   [2] MODIFIER LETTER STRESS AND HIGH TONE..MODIFIER LETTER STRESS AND LOW TONE
+A722..A76F    ; Grapheme_Base # L&  [78] LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF..LATIN SMALL LETTER CON
+A770          ; Grapheme_Base # Lm       MODIFIER LETTER US
+A771..A787    ; Grapheme_Base # L&  [23] LATIN SMALL LETTER DUM..LATIN SMALL LETTER INSULAR T
+A788          ; Grapheme_Base # Lm       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A789..A78A    ; Grapheme_Base # Sk   [2] MODIFIER LETTER COLON..MODIFIER LETTER SHORT EQUALS SIGN
+A78B..A78E    ; Grapheme_Base # L&   [4] LATIN CAPITAL LETTER SALTILLO..LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A78F          ; Grapheme_Base # Lo       LATIN LETTER SINOLOGICAL DOT
+A790..A7CA    ; Grapheme_Base # L&  [59] LATIN CAPITAL LETTER N WITH DESCENDER..LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D0..A7D1    ; Grapheme_Base # L&   [2] LATIN CAPITAL LETTER CLOSED INSULAR G..LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; Grapheme_Base # L&       LATIN SMALL LETTER DOUBLE THORN
+A7D5..A7D9    ; Grapheme_Base # L&   [5] LATIN SMALL LETTER DOUBLE WYNN..LATIN SMALL LETTER SIGMOID S
+A7F2..A7F4    ; Grapheme_Base # Lm   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F5..A7F6    ; Grapheme_Base # L&   [2] LATIN CAPITAL LETTER REVERSED HALF H..LATIN SMALL LETTER REVERSED HALF H
+A7F7          ; Grapheme_Base # Lo       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7F8..A7F9    ; Grapheme_Base # Lm   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A7FA          ; Grapheme_Base # L&       LATIN LETTER SMALL CAPITAL TURNED M
+A7FB..A801    ; Grapheme_Base # Lo   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A803..A805    ; Grapheme_Base # Lo   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A807..A80A    ; Grapheme_Base # Lo   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80C..A822    ; Grapheme_Base # Lo  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A823..A824    ; Grapheme_Base # Mc   [2] SYLOTI NAGRI VOWEL SIGN A..SYLOTI NAGRI VOWEL SIGN I
+A827          ; Grapheme_Base # Mc       SYLOTI NAGRI VOWEL SIGN OO
+A828..A82B    ; Grapheme_Base # So   [4] SYLOTI NAGRI POETRY MARK-1..SYLOTI NAGRI POETRY MARK-4
+A830..A835    ; Grapheme_Base # No   [6] NORTH INDIC FRACTION ONE QUARTER..NORTH INDIC FRACTION THREE SIXTEENTHS
+A836..A837    ; Grapheme_Base # So   [2] NORTH INDIC QUARTER MARK..NORTH INDIC PLACEHOLDER MARK
+A838          ; Grapheme_Base # Sc       NORTH INDIC RUPEE MARK
+A839          ; Grapheme_Base # So       NORTH INDIC QUANTITY MARK
+A840..A873    ; Grapheme_Base # Lo  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A874..A877    ; Grapheme_Base # Po   [4] PHAGS-PA SINGLE HEAD MARK..PHAGS-PA MARK DOUBLE SHAD
+A880..A881    ; Grapheme_Base # Mc   [2] SAURASHTRA SIGN ANUSVARA..SAURASHTRA SIGN VISARGA
+A882..A8B3    ; Grapheme_Base # Lo  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8B4..A8C3    ; Grapheme_Base # Mc  [16] SAURASHTRA CONSONANT SIGN HAARU..SAURASHTRA VOWEL SIGN AU
+A8CE..A8CF    ; Grapheme_Base # Po   [2] SAURASHTRA DANDA..SAURASHTRA DOUBLE DANDA
+A8D0..A8D9    ; Grapheme_Base # Nd  [10] SAURASHTRA DIGIT ZERO..SAURASHTRA DIGIT NINE
+A8F2..A8F7    ; Grapheme_Base # Lo   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8F8..A8FA    ; Grapheme_Base # Po   [3] DEVANAGARI SIGN PUSHPIKA..DEVANAGARI CARET
+A8FB          ; Grapheme_Base # Lo       DEVANAGARI HEADSTROKE
+A8FC          ; Grapheme_Base # Po       DEVANAGARI SIGN SIDDHAM
+A8FD..A8FE    ; Grapheme_Base # Lo   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A900..A909    ; Grapheme_Base # Nd  [10] KAYAH LI DIGIT ZERO..KAYAH LI DIGIT NINE
+A90A..A925    ; Grapheme_Base # Lo  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A92E..A92F    ; Grapheme_Base # Po   [2] KAYAH LI SIGN CWI..KAYAH LI SIGN SHYA
+A930..A946    ; Grapheme_Base # Lo  [23] REJANG LETTER KA..REJANG LETTER A
+A952..A953    ; Grapheme_Base # Mc   [2] REJANG CONSONANT SIGN H..REJANG VIRAMA
+A95F          ; Grapheme_Base # Po       REJANG SECTION MARK
+A960..A97C    ; Grapheme_Base # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A983          ; Grapheme_Base # Mc       JAVANESE SIGN WIGNYAN
+A984..A9B2    ; Grapheme_Base # Lo  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9B4..A9B5    ; Grapheme_Base # Mc   [2] JAVANESE VOWEL SIGN TARUNG..JAVANESE VOWEL SIGN TOLONG
+A9BA..A9BB    ; Grapheme_Base # Mc   [2] JAVANESE VOWEL SIGN TALING..JAVANESE VOWEL SIGN DIRGA MURE
+A9BE..A9C0    ; Grapheme_Base # Mc   [3] JAVANESE CONSONANT SIGN PENGKAL..JAVANESE PANGKON
+A9C1..A9CD    ; Grapheme_Base # Po  [13] JAVANESE LEFT RERENGGAN..JAVANESE TURNED PADA PISELEH
+A9CF          ; Grapheme_Base # Lm       JAVANESE PANGRANGKEP
+A9D0..A9D9    ; Grapheme_Base # Nd  [10] JAVANESE DIGIT ZERO..JAVANESE DIGIT NINE
+A9DE..A9DF    ; Grapheme_Base # Po   [2] JAVANESE PADA TIRTA TUMETES..JAVANESE PADA ISEN-ISEN
+A9E0..A9E4    ; Grapheme_Base # Lo   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E6          ; Grapheme_Base # Lm       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+A9E7..A9EF    ; Grapheme_Base # Lo   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9F0..A9F9    ; Grapheme_Base # Nd  [10] MYANMAR TAI LAING DIGIT ZERO..MYANMAR TAI LAING DIGIT NINE
+A9FA..A9FE    ; Grapheme_Base # Lo   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; Grapheme_Base # Lo  [41] CHAM LETTER A..CHAM LETTER HA
+AA2F..AA30    ; Grapheme_Base # Mc   [2] CHAM VOWEL SIGN O..CHAM VOWEL SIGN AI
+AA33..AA34    ; Grapheme_Base # Mc   [2] CHAM CONSONANT SIGN YA..CHAM CONSONANT SIGN RA
+AA40..AA42    ; Grapheme_Base # Lo   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA44..AA4B    ; Grapheme_Base # Lo   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA4D          ; Grapheme_Base # Mc       CHAM CONSONANT SIGN FINAL H
+AA50..AA59    ; Grapheme_Base # Nd  [10] CHAM DIGIT ZERO..CHAM DIGIT NINE
+AA5C..AA5F    ; Grapheme_Base # Po   [4] CHAM PUNCTUATION SPIRAL..CHAM PUNCTUATION TRIPLE DANDA
+AA60..AA6F    ; Grapheme_Base # Lo  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA70          ; Grapheme_Base # Lm       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AA71..AA76    ; Grapheme_Base # Lo   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA77..AA79    ; Grapheme_Base # So   [3] MYANMAR SYMBOL AITON EXCLAMATION..MYANMAR SYMBOL AITON TWO
+AA7A          ; Grapheme_Base # Lo       MYANMAR LETTER AITON RA
+AA7B          ; Grapheme_Base # Mc       MYANMAR SIGN PAO KAREN TONE
+AA7D          ; Grapheme_Base # Mc       MYANMAR SIGN TAI LAING TONE-5
+AA7E..AAAF    ; Grapheme_Base # Lo  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB1          ; Grapheme_Base # Lo       TAI VIET VOWEL AA
+AAB5..AAB6    ; Grapheme_Base # Lo   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB9..AABD    ; Grapheme_Base # Lo   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AAC0          ; Grapheme_Base # Lo       TAI VIET TONE MAI NUENG
+AAC2          ; Grapheme_Base # Lo       TAI VIET TONE MAI SONG
+AADB..AADC    ; Grapheme_Base # Lo   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AADD          ; Grapheme_Base # Lm       TAI VIET SYMBOL SAM
+AADE..AADF    ; Grapheme_Base # Po   [2] TAI VIET SYMBOL HO HOI..TAI VIET SYMBOL KOI KOI
+AAE0..AAEA    ; Grapheme_Base # Lo  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAEB          ; Grapheme_Base # Mc       MEETEI MAYEK VOWEL SIGN II
+AAEE..AAEF    ; Grapheme_Base # Mc   [2] MEETEI MAYEK VOWEL SIGN AU..MEETEI MAYEK VOWEL SIGN AAU
+AAF0..AAF1    ; Grapheme_Base # Po   [2] MEETEI MAYEK CHEIKHAN..MEETEI MAYEK AHANG KHUDAM
+AAF2          ; Grapheme_Base # Lo       MEETEI MAYEK ANJI
+AAF3..AAF4    ; Grapheme_Base # Lm   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AAF5          ; Grapheme_Base # Mc       MEETEI MAYEK VOWEL SIGN VISARGA
+AB01..AB06    ; Grapheme_Base # Lo   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; Grapheme_Base # Lo   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; Grapheme_Base # Lo   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+AB30..AB5A    ; Grapheme_Base # L&  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB5B          ; Grapheme_Base # Sk       MODIFIER BREVE WITH INVERTED BREVE
+AB5C..AB5F    ; Grapheme_Base # Lm   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB60..AB68    ; Grapheme_Base # L&   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB69          ; Grapheme_Base # Lm       MODIFIER LETTER SMALL TURNED W
+AB6A..AB6B    ; Grapheme_Base # Sk   [2] MODIFIER LETTER LEFT TACK..MODIFIER LETTER RIGHT TACK
+AB70..ABBF    ; Grapheme_Base # L&  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+ABC0..ABE2    ; Grapheme_Base # Lo  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+ABE3..ABE4    ; Grapheme_Base # Mc   [2] MEETEI MAYEK VOWEL SIGN ONAP..MEETEI MAYEK VOWEL SIGN INAP
+ABE6..ABE7    ; Grapheme_Base # Mc   [2] MEETEI MAYEK VOWEL SIGN YENAP..MEETEI MAYEK VOWEL SIGN SOUNAP
+ABE9..ABEA    ; Grapheme_Base # Mc   [2] MEETEI MAYEK VOWEL SIGN CHEINAP..MEETEI MAYEK VOWEL SIGN NUNG
+ABEB          ; Grapheme_Base # Po       MEETEI MAYEK CHEIKHEI
+ABEC          ; Grapheme_Base # Mc       MEETEI MAYEK LUM IYEK
+ABF0..ABF9    ; Grapheme_Base # Nd  [10] MEETEI MAYEK DIGIT ZERO..MEETEI MAYEK DIGIT NINE
+AC00..D7A3    ; Grapheme_Base # Lo [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; Grapheme_Base # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; Grapheme_Base # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; Grapheme_Base # Lo [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; Grapheme_Base # Lo [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB00..FB06    ; Grapheme_Base # L&   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Grapheme_Base # L&   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FB1D          ; Grapheme_Base # Lo       HEBREW LETTER YOD WITH HIRIQ
+FB1F..FB28    ; Grapheme_Base # Lo  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB29          ; Grapheme_Base # Sm       HEBREW LETTER ALTERNATIVE PLUS SIGN
+FB2A..FB36    ; Grapheme_Base # Lo  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; Grapheme_Base # Lo   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; Grapheme_Base # Lo       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; Grapheme_Base # Lo   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; Grapheme_Base # Lo   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; Grapheme_Base # Lo [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBB2..FBC2    ; Grapheme_Base # Sk  [17] ARABIC SYMBOL DOT ABOVE..ARABIC SYMBOL WASLA ABOVE
+FBD3..FD3D    ; Grapheme_Base # Lo [363] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD3E          ; Grapheme_Base # Pe       ORNATE LEFT PARENTHESIS
+FD3F          ; Grapheme_Base # Ps       ORNATE RIGHT PARENTHESIS
+FD40..FD4F    ; Grapheme_Base # So  [16] ARABIC LIGATURE RAHIMAHU ALLAAH..ARABIC LIGATURE RAHIMAHUM ALLAAH
+FD50..FD8F    ; Grapheme_Base # Lo  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; Grapheme_Base # Lo  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDCF          ; Grapheme_Base # So       ARABIC LIGATURE SALAAMUHU ALAYNAA
+FDF0..FDFB    ; Grapheme_Base # Lo  [12] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE JALLAJALALOUHOU
+FDFC          ; Grapheme_Base # Sc       RIAL SIGN
+FDFD..FDFF    ; Grapheme_Base # So   [3] ARABIC LIGATURE BISMILLAH AR-RAHMAN AR-RAHEEM..ARABIC LIGATURE AZZA WA JALL
+FE10..FE16    ; Grapheme_Base # Po   [7] PRESENTATION FORM FOR VERTICAL COMMA..PRESENTATION FORM FOR VERTICAL QUESTION MARK
+FE17          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT WHITE LENTICULAR BRACKET
+FE18          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT WHITE LENTICULAR BRAKCET
+FE19          ; Grapheme_Base # Po       PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
+FE30          ; Grapheme_Base # Po       PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
+FE31..FE32    ; Grapheme_Base # Pd   [2] PRESENTATION FORM FOR VERTICAL EM DASH..PRESENTATION FORM FOR VERTICAL EN DASH
+FE33..FE34    ; Grapheme_Base # Pc   [2] PRESENTATION FORM FOR VERTICAL LOW LINE..PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
+FE35          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT PARENTHESIS
+FE36          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT PARENTHESIS
+FE37          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT CURLY BRACKET
+FE38          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT CURLY BRACKET
+FE39          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT TORTOISE SHELL BRACKET
+FE3A          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT TORTOISE SHELL BRACKET
+FE3B          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT BLACK LENTICULAR BRACKET
+FE3C          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT BLACK LENTICULAR BRACKET
+FE3D          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT DOUBLE ANGLE BRACKET
+FE3E          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT DOUBLE ANGLE BRACKET
+FE3F          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT ANGLE BRACKET
+FE40          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT ANGLE BRACKET
+FE41          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT CORNER BRACKET
+FE42          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT CORNER BRACKET
+FE43          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT WHITE CORNER BRACKET
+FE44          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT WHITE CORNER BRACKET
+FE45..FE46    ; Grapheme_Base # Po   [2] SESAME DOT..WHITE SESAME DOT
+FE47          ; Grapheme_Base # Ps       PRESENTATION FORM FOR VERTICAL LEFT SQUARE BRACKET
+FE48          ; Grapheme_Base # Pe       PRESENTATION FORM FOR VERTICAL RIGHT SQUARE BRACKET
+FE49..FE4C    ; Grapheme_Base # Po   [4] DASHED OVERLINE..DOUBLE WAVY OVERLINE
+FE4D..FE4F    ; Grapheme_Base # Pc   [3] DASHED LOW LINE..WAVY LOW LINE
+FE50..FE52    ; Grapheme_Base # Po   [3] SMALL COMMA..SMALL FULL STOP
+FE54..FE57    ; Grapheme_Base # Po   [4] SMALL SEMICOLON..SMALL EXCLAMATION MARK
+FE58          ; Grapheme_Base # Pd       SMALL EM DASH
+FE59          ; Grapheme_Base # Ps       SMALL LEFT PARENTHESIS
+FE5A          ; Grapheme_Base # Pe       SMALL RIGHT PARENTHESIS
+FE5B          ; Grapheme_Base # Ps       SMALL LEFT CURLY BRACKET
+FE5C          ; Grapheme_Base # Pe       SMALL RIGHT CURLY BRACKET
+FE5D          ; Grapheme_Base # Ps       SMALL LEFT TORTOISE SHELL BRACKET
+FE5E          ; Grapheme_Base # Pe       SMALL RIGHT TORTOISE SHELL BRACKET
+FE5F..FE61    ; Grapheme_Base # Po   [3] SMALL NUMBER SIGN..SMALL ASTERISK
+FE62          ; Grapheme_Base # Sm       SMALL PLUS SIGN
+FE63          ; Grapheme_Base # Pd       SMALL HYPHEN-MINUS
+FE64..FE66    ; Grapheme_Base # Sm   [3] SMALL LESS-THAN SIGN..SMALL EQUALS SIGN
+FE68          ; Grapheme_Base # Po       SMALL REVERSE SOLIDUS
+FE69          ; Grapheme_Base # Sc       SMALL DOLLAR SIGN
+FE6A..FE6B    ; Grapheme_Base # Po   [2] SMALL PERCENT SIGN..SMALL COMMERCIAL AT
+FE70..FE74    ; Grapheme_Base # Lo   [5] ARABIC FATHATAN ISOLATED FORM..ARABIC KASRATAN ISOLATED FORM
+FE76..FEFC    ; Grapheme_Base # Lo [135] ARABIC FATHA ISOLATED FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF01..FF03    ; Grapheme_Base # Po   [3] FULLWIDTH EXCLAMATION MARK..FULLWIDTH NUMBER SIGN
+FF04          ; Grapheme_Base # Sc       FULLWIDTH DOLLAR SIGN
+FF05..FF07    ; Grapheme_Base # Po   [3] FULLWIDTH PERCENT SIGN..FULLWIDTH APOSTROPHE
+FF08          ; Grapheme_Base # Ps       FULLWIDTH LEFT PARENTHESIS
+FF09          ; Grapheme_Base # Pe       FULLWIDTH RIGHT PARENTHESIS
+FF0A          ; Grapheme_Base # Po       FULLWIDTH ASTERISK
+FF0B          ; Grapheme_Base # Sm       FULLWIDTH PLUS SIGN
+FF0C          ; Grapheme_Base # Po       FULLWIDTH COMMA
+FF0D          ; Grapheme_Base # Pd       FULLWIDTH HYPHEN-MINUS
+FF0E..FF0F    ; Grapheme_Base # Po   [2] FULLWIDTH FULL STOP..FULLWIDTH SOLIDUS
+FF10..FF19    ; Grapheme_Base # Nd  [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE
+FF1A..FF1B    ; Grapheme_Base # Po   [2] FULLWIDTH COLON..FULLWIDTH SEMICOLON
+FF1C..FF1E    ; Grapheme_Base # Sm   [3] FULLWIDTH LESS-THAN SIGN..FULLWIDTH GREATER-THAN SIGN
+FF1F..FF20    ; Grapheme_Base # Po   [2] FULLWIDTH QUESTION MARK..FULLWIDTH COMMERCIAL AT
+FF21..FF3A    ; Grapheme_Base # L&  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+FF3B          ; Grapheme_Base # Ps       FULLWIDTH LEFT SQUARE BRACKET
+FF3C          ; Grapheme_Base # Po       FULLWIDTH REVERSE SOLIDUS
+FF3D          ; Grapheme_Base # Pe       FULLWIDTH RIGHT SQUARE BRACKET
+FF3E          ; Grapheme_Base # Sk       FULLWIDTH CIRCUMFLEX ACCENT
+FF3F          ; Grapheme_Base # Pc       FULLWIDTH LOW LINE
+FF40          ; Grapheme_Base # Sk       FULLWIDTH GRAVE ACCENT
+FF41..FF5A    ; Grapheme_Base # L&  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+FF5B          ; Grapheme_Base # Ps       FULLWIDTH LEFT CURLY BRACKET
+FF5C          ; Grapheme_Base # Sm       FULLWIDTH VERTICAL LINE
+FF5D          ; Grapheme_Base # Pe       FULLWIDTH RIGHT CURLY BRACKET
+FF5E          ; Grapheme_Base # Sm       FULLWIDTH TILDE
+FF5F          ; Grapheme_Base # Ps       FULLWIDTH LEFT WHITE PARENTHESIS
+FF60          ; Grapheme_Base # Pe       FULLWIDTH RIGHT WHITE PARENTHESIS
+FF61          ; Grapheme_Base # Po       HALFWIDTH IDEOGRAPHIC FULL STOP
+FF62          ; Grapheme_Base # Ps       HALFWIDTH LEFT CORNER BRACKET
+FF63          ; Grapheme_Base # Pe       HALFWIDTH RIGHT CORNER BRACKET
+FF64..FF65    ; Grapheme_Base # Po   [2] HALFWIDTH IDEOGRAPHIC COMMA..HALFWIDTH KATAKANA MIDDLE DOT
+FF66..FF6F    ; Grapheme_Base # Lo  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF70          ; Grapheme_Base # Lm       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF71..FF9D    ; Grapheme_Base # Lo  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FFA0..FFBE    ; Grapheme_Base # Lo  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; Grapheme_Base # Lo   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; Grapheme_Base # Lo   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; Grapheme_Base # Lo   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; Grapheme_Base # Lo   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+FFE0..FFE1    ; Grapheme_Base # Sc   [2] FULLWIDTH CENT SIGN..FULLWIDTH POUND SIGN
+FFE2          ; Grapheme_Base # Sm       FULLWIDTH NOT SIGN
+FFE3          ; Grapheme_Base # Sk       FULLWIDTH MACRON
+FFE4          ; Grapheme_Base # So       FULLWIDTH BROKEN BAR
+FFE5..FFE6    ; Grapheme_Base # Sc   [2] FULLWIDTH YEN SIGN..FULLWIDTH WON SIGN
+FFE8          ; Grapheme_Base # So       HALFWIDTH FORMS LIGHT VERTICAL
+FFE9..FFEC    ; Grapheme_Base # Sm   [4] HALFWIDTH LEFTWARDS ARROW..HALFWIDTH DOWNWARDS ARROW
+FFED..FFEE    ; Grapheme_Base # So   [2] HALFWIDTH BLACK SQUARE..HALFWIDTH WHITE CIRCLE
+FFFC..FFFD    ; Grapheme_Base # So   [2] OBJECT REPLACEMENT CHARACTER..REPLACEMENT CHARACTER
+10000..1000B  ; Grapheme_Base # Lo  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; Grapheme_Base # Lo  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; Grapheme_Base # Lo  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; Grapheme_Base # Lo   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; Grapheme_Base # Lo  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; Grapheme_Base # Lo  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; Grapheme_Base # Lo [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10100..10102  ; Grapheme_Base # Po   [3] AEGEAN WORD SEPARATOR LINE..AEGEAN CHECK MARK
+10107..10133  ; Grapheme_Base # No  [45] AEGEAN NUMBER ONE..AEGEAN NUMBER NINETY THOUSAND
+10137..1013F  ; Grapheme_Base # So   [9] AEGEAN WEIGHT BASE UNIT..AEGEAN MEASURE THIRD SUBUNIT
+10140..10174  ; Grapheme_Base # Nl  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+10175..10178  ; Grapheme_Base # No   [4] GREEK ONE HALF SIGN..GREEK THREE QUARTERS SIGN
+10179..10189  ; Grapheme_Base # So  [17] GREEK YEAR SIGN..GREEK TRYBLION BASE SIGN
+1018A..1018B  ; Grapheme_Base # No   [2] GREEK ZERO SIGN..GREEK ONE QUARTER SIGN
+1018C..1018E  ; Grapheme_Base # So   [3] GREEK SINUSOID SIGN..NOMISMA SIGN
+10190..1019C  ; Grapheme_Base # So  [13] ROMAN SEXTANS SIGN..ASCIA SYMBOL
+101A0         ; Grapheme_Base # So       GREEK SYMBOL TAU RHO
+101D0..101FC  ; Grapheme_Base # So  [45] PHAISTOS DISC SIGN PEDESTRIAN..PHAISTOS DISC SIGN WAVY BAND
+10280..1029C  ; Grapheme_Base # Lo  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; Grapheme_Base # Lo  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+102E1..102FB  ; Grapheme_Base # No  [27] COPTIC EPACT DIGIT ONE..COPTIC EPACT NUMBER NINE HUNDRED
+10300..1031F  ; Grapheme_Base # Lo  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+10320..10323  ; Grapheme_Base # No   [4] OLD ITALIC NUMERAL ONE..OLD ITALIC NUMERAL FIFTY
+1032D..10340  ; Grapheme_Base # Lo  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10341         ; Grapheme_Base # Nl       GOTHIC LETTER NINETY
+10342..10349  ; Grapheme_Base # Lo   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+1034A         ; Grapheme_Base # Nl       GOTHIC LETTER NINE HUNDRED
+10350..10375  ; Grapheme_Base # Lo  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10380..1039D  ; Grapheme_Base # Lo  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+1039F         ; Grapheme_Base # Po       UGARITIC WORD DIVIDER
+103A0..103C3  ; Grapheme_Base # Lo  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; Grapheme_Base # Lo   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+103D0         ; Grapheme_Base # Po       OLD PERSIAN WORD DIVIDER
+103D1..103D5  ; Grapheme_Base # Nl   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+10400..1044F  ; Grapheme_Base # L&  [80] DESERET CAPITAL LETTER LONG I..DESERET SMALL LETTER EW
+10450..1049D  ; Grapheme_Base # Lo  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+104A0..104A9  ; Grapheme_Base # Nd  [10] OSMANYA DIGIT ZERO..OSMANYA DIGIT NINE
+104B0..104D3  ; Grapheme_Base # L&  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+104D8..104FB  ; Grapheme_Base # L&  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10500..10527  ; Grapheme_Base # Lo  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; Grapheme_Base # Lo  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+1056F         ; Grapheme_Base # Po       CAUCASIAN ALBANIAN CITATION MARK
+10570..1057A  ; Grapheme_Base # L&  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Grapheme_Base # L&  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Grapheme_Base # L&   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Grapheme_Base # L&   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10597..105A1  ; Grapheme_Base # L&  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Grapheme_Base # L&  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Grapheme_Base # L&   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Grapheme_Base # L&   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10600..10736  ; Grapheme_Base # Lo [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; Grapheme_Base # Lo  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; Grapheme_Base # Lo   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10780..10785  ; Grapheme_Base # Lm   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; Grapheme_Base # Lm  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; Grapheme_Base # Lm   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+10800..10805  ; Grapheme_Base # Lo   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; Grapheme_Base # Lo       CYPRIOT SYLLABLE JO
+1080A..10835  ; Grapheme_Base # Lo  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; Grapheme_Base # Lo   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; Grapheme_Base # Lo       CYPRIOT SYLLABLE ZA
+1083F..10855  ; Grapheme_Base # Lo  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10857         ; Grapheme_Base # Po       IMPERIAL ARAMAIC SECTION SIGN
+10858..1085F  ; Grapheme_Base # No   [8] IMPERIAL ARAMAIC NUMBER ONE..IMPERIAL ARAMAIC NUMBER TEN THOUSAND
+10860..10876  ; Grapheme_Base # Lo  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10877..10878  ; Grapheme_Base # So   [2] PALMYRENE LEFT-POINTING FLEURON..PALMYRENE RIGHT-POINTING FLEURON
+10879..1087F  ; Grapheme_Base # No   [7] PALMYRENE NUMBER ONE..PALMYRENE NUMBER TWENTY
+10880..1089E  ; Grapheme_Base # Lo  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108A7..108AF  ; Grapheme_Base # No   [9] NABATAEAN NUMBER ONE..NABATAEAN NUMBER ONE HUNDRED
+108E0..108F2  ; Grapheme_Base # Lo  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; Grapheme_Base # Lo   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+108FB..108FF  ; Grapheme_Base # No   [5] HATRAN NUMBER ONE..HATRAN NUMBER ONE HUNDRED
+10900..10915  ; Grapheme_Base # Lo  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10916..1091B  ; Grapheme_Base # No   [6] PHOENICIAN NUMBER ONE..PHOENICIAN NUMBER THREE
+1091F         ; Grapheme_Base # Po       PHOENICIAN WORD SEPARATOR
+10920..10939  ; Grapheme_Base # Lo  [26] LYDIAN LETTER A..LYDIAN LETTER C
+1093F         ; Grapheme_Base # Po       LYDIAN TRIANGULAR MARK
+10980..109B7  ; Grapheme_Base # Lo  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BC..109BD  ; Grapheme_Base # No   [2] MEROITIC CURSIVE FRACTION ELEVEN TWELFTHS..MEROITIC CURSIVE FRACTION ONE HALF
+109BE..109BF  ; Grapheme_Base # Lo   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+109C0..109CF  ; Grapheme_Base # No  [16] MEROITIC CURSIVE NUMBER ONE..MEROITIC CURSIVE NUMBER SEVENTY
+109D2..109FF  ; Grapheme_Base # No  [46] MEROITIC CURSIVE NUMBER ONE HUNDRED..MEROITIC CURSIVE FRACTION TEN TWELFTHS
+10A00         ; Grapheme_Base # Lo       KHAROSHTHI LETTER A
+10A10..10A13  ; Grapheme_Base # Lo   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; Grapheme_Base # Lo   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; Grapheme_Base # Lo  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A40..10A48  ; Grapheme_Base # No   [9] KHAROSHTHI DIGIT ONE..KHAROSHTHI FRACTION ONE HALF
+10A50..10A58  ; Grapheme_Base # Po   [9] KHAROSHTHI PUNCTUATION DOT..KHAROSHTHI PUNCTUATION LINES
+10A60..10A7C  ; Grapheme_Base # Lo  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A7D..10A7E  ; Grapheme_Base # No   [2] OLD SOUTH ARABIAN NUMBER ONE..OLD SOUTH ARABIAN NUMBER FIFTY
+10A7F         ; Grapheme_Base # Po       OLD SOUTH ARABIAN NUMERIC INDICATOR
+10A80..10A9C  ; Grapheme_Base # Lo  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10A9D..10A9F  ; Grapheme_Base # No   [3] OLD NORTH ARABIAN NUMBER ONE..OLD NORTH ARABIAN NUMBER TWENTY
+10AC0..10AC7  ; Grapheme_Base # Lo   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC8         ; Grapheme_Base # So       MANICHAEAN SIGN UD
+10AC9..10AE4  ; Grapheme_Base # Lo  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10AEB..10AEF  ; Grapheme_Base # No   [5] MANICHAEAN NUMBER ONE..MANICHAEAN NUMBER ONE HUNDRED
+10AF0..10AF6  ; Grapheme_Base # Po   [7] MANICHAEAN PUNCTUATION STAR..MANICHAEAN PUNCTUATION LINE FILLER
+10B00..10B35  ; Grapheme_Base # Lo  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B39..10B3F  ; Grapheme_Base # Po   [7] AVESTAN ABBREVIATION MARK..LARGE ONE RING OVER TWO RINGS PUNCTUATION
+10B40..10B55  ; Grapheme_Base # Lo  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B58..10B5F  ; Grapheme_Base # No   [8] INSCRIPTIONAL PARTHIAN NUMBER ONE..INSCRIPTIONAL PARTHIAN NUMBER ONE THOUSAND
+10B60..10B72  ; Grapheme_Base # Lo  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B78..10B7F  ; Grapheme_Base # No   [8] INSCRIPTIONAL PAHLAVI NUMBER ONE..INSCRIPTIONAL PAHLAVI NUMBER ONE THOUSAND
+10B80..10B91  ; Grapheme_Base # Lo  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10B99..10B9C  ; Grapheme_Base # Po   [4] PSALTER PAHLAVI SECTION MARK..PSALTER PAHLAVI FOUR DOTS WITH DOT
+10BA9..10BAF  ; Grapheme_Base # No   [7] PSALTER PAHLAVI NUMBER ONE..PSALTER PAHLAVI NUMBER ONE HUNDRED
+10C00..10C48  ; Grapheme_Base # Lo  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10C80..10CB2  ; Grapheme_Base # L&  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+10CC0..10CF2  ; Grapheme_Base # L&  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+10CFA..10CFF  ; Grapheme_Base # No   [6] OLD HUNGARIAN NUMBER ONE..OLD HUNGARIAN NUMBER ONE THOUSAND
+10D00..10D23  ; Grapheme_Base # Lo  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10D30..10D39  ; Grapheme_Base # Nd  [10] HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA DIGIT NINE
+10E60..10E7E  ; Grapheme_Base # No  [31] RUMI DIGIT ONE..RUMI FRACTION TWO THIRDS
+10E80..10EA9  ; Grapheme_Base # Lo  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EAD         ; Grapheme_Base # Pd       YEZIDI HYPHENATION MARK
+10EB0..10EB1  ; Grapheme_Base # Lo   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10F00..10F1C  ; Grapheme_Base # Lo  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F1D..10F26  ; Grapheme_Base # No  [10] OLD SOGDIAN NUMBER ONE..OLD SOGDIAN FRACTION ONE HALF
+10F27         ; Grapheme_Base # Lo       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; Grapheme_Base # Lo  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F51..10F54  ; Grapheme_Base # No   [4] SOGDIAN NUMBER ONE..SOGDIAN NUMBER ONE HUNDRED
+10F55..10F59  ; Grapheme_Base # Po   [5] SOGDIAN PUNCTUATION TWO VERTICAL BARS..SOGDIAN PUNCTUATION HALF CIRCLE WITH DOT
+10F70..10F81  ; Grapheme_Base # Lo  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10F86..10F89  ; Grapheme_Base # Po   [4] OLD UYGHUR PUNCTUATION BAR..OLD UYGHUR PUNCTUATION FOUR DOTS
+10FB0..10FC4  ; Grapheme_Base # Lo  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FC5..10FCB  ; Grapheme_Base # No   [7] CHORASMIAN NUMBER ONE..CHORASMIAN NUMBER ONE HUNDRED
+10FE0..10FF6  ; Grapheme_Base # Lo  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11000         ; Grapheme_Base # Mc       BRAHMI SIGN CANDRABINDU
+11002         ; Grapheme_Base # Mc       BRAHMI SIGN VISARGA
+11003..11037  ; Grapheme_Base # Lo  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11047..1104D  ; Grapheme_Base # Po   [7] BRAHMI DANDA..BRAHMI PUNCTUATION LOTUS
+11052..11065  ; Grapheme_Base # No  [20] BRAHMI NUMBER ONE..BRAHMI NUMBER ONE THOUSAND
+11066..1106F  ; Grapheme_Base # Nd  [10] BRAHMI DIGIT ZERO..BRAHMI DIGIT NINE
+11071..11072  ; Grapheme_Base # Lo   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11075         ; Grapheme_Base # Lo       BRAHMI LETTER OLD TAMIL LLA
+11082         ; Grapheme_Base # Mc       KAITHI SIGN VISARGA
+11083..110AF  ; Grapheme_Base # Lo  [45] KAITHI LETTER A..KAITHI LETTER HA
+110B0..110B2  ; Grapheme_Base # Mc   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
+110B7..110B8  ; Grapheme_Base # Mc   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
+110BB..110BC  ; Grapheme_Base # Po   [2] KAITHI ABBREVIATION SIGN..KAITHI ENUMERATION SIGN
+110BE..110C1  ; Grapheme_Base # Po   [4] KAITHI SECTION MARK..KAITHI DOUBLE DANDA
+110D0..110E8  ; Grapheme_Base # Lo  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+110F0..110F9  ; Grapheme_Base # Nd  [10] SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT NINE
+11103..11126  ; Grapheme_Base # Lo  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+1112C         ; Grapheme_Base # Mc       CHAKMA VOWEL SIGN E
+11136..1113F  ; Grapheme_Base # Nd  [10] CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE
+11140..11143  ; Grapheme_Base # Po   [4] CHAKMA SECTION MARK..CHAKMA QUESTION MARK
+11144         ; Grapheme_Base # Lo       CHAKMA LETTER LHAA
+11145..11146  ; Grapheme_Base # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
+11147         ; Grapheme_Base # Lo       CHAKMA LETTER VAA
+11150..11172  ; Grapheme_Base # Lo  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11174..11175  ; Grapheme_Base # Po   [2] MAHAJANI ABBREVIATION SIGN..MAHAJANI SECTION MARK
+11176         ; Grapheme_Base # Lo       MAHAJANI LIGATURE SHRI
+11182         ; Grapheme_Base # Mc       SHARADA SIGN VISARGA
+11183..111B2  ; Grapheme_Base # Lo  [48] SHARADA LETTER A..SHARADA LETTER HA
+111B3..111B5  ; Grapheme_Base # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
+111BF..111C0  ; Grapheme_Base # Mc   [2] SHARADA VOWEL SIGN AU..SHARADA SIGN VIRAMA
+111C1..111C4  ; Grapheme_Base # Lo   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111C5..111C8  ; Grapheme_Base # Po   [4] SHARADA DANDA..SHARADA SEPARATOR
+111CD         ; Grapheme_Base # Po       SHARADA SUTRA MARK
+111CE         ; Grapheme_Base # Mc       SHARADA VOWEL SIGN PRISHTHAMATRA E
+111D0..111D9  ; Grapheme_Base # Nd  [10] SHARADA DIGIT ZERO..SHARADA DIGIT NINE
+111DA         ; Grapheme_Base # Lo       SHARADA EKAM
+111DB         ; Grapheme_Base # Po       SHARADA SIGN SIDDHAM
+111DC         ; Grapheme_Base # Lo       SHARADA HEADSTROKE
+111DD..111DF  ; Grapheme_Base # Po   [3] SHARADA CONTINUATION SIGN..SHARADA SECTION MARK-2
+111E1..111F4  ; Grapheme_Base # No  [20] SINHALA ARCHAIC DIGIT ONE..SINHALA ARCHAIC NUMBER ONE THOUSAND
+11200..11211  ; Grapheme_Base # Lo  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; Grapheme_Base # Lo  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1122C..1122E  ; Grapheme_Base # Mc   [3] KHOJKI VOWEL SIGN AA..KHOJKI VOWEL SIGN II
+11232..11233  ; Grapheme_Base # Mc   [2] KHOJKI VOWEL SIGN O..KHOJKI VOWEL SIGN AU
+11235         ; Grapheme_Base # Mc       KHOJKI SIGN VIRAMA
+11238..1123D  ; Grapheme_Base # Po   [6] KHOJKI DANDA..KHOJKI ABBREVIATION SIGN
+1123F..11240  ; Grapheme_Base # Lo   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11280..11286  ; Grapheme_Base # Lo   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; Grapheme_Base # Lo       MULTANI LETTER GHA
+1128A..1128D  ; Grapheme_Base # Lo   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; Grapheme_Base # Lo  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; Grapheme_Base # Lo  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112A9         ; Grapheme_Base # Po       MULTANI SECTION MARK
+112B0..112DE  ; Grapheme_Base # Lo  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+112E0..112E2  ; Grapheme_Base # Mc   [3] KHUDAWADI VOWEL SIGN AA..KHUDAWADI VOWEL SIGN II
+112F0..112F9  ; Grapheme_Base # Nd  [10] KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE
+11302..11303  ; Grapheme_Base # Mc   [2] GRANTHA SIGN ANUSVARA..GRANTHA SIGN VISARGA
+11305..1130C  ; Grapheme_Base # Lo   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; Grapheme_Base # Lo   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; Grapheme_Base # Lo  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; Grapheme_Base # Lo   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; Grapheme_Base # Lo   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; Grapheme_Base # Lo   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133D         ; Grapheme_Base # Lo       GRANTHA SIGN AVAGRAHA
+1133F         ; Grapheme_Base # Mc       GRANTHA VOWEL SIGN I
+11341..11344  ; Grapheme_Base # Mc   [4] GRANTHA VOWEL SIGN U..GRANTHA VOWEL SIGN VOCALIC RR
+11347..11348  ; Grapheme_Base # Mc   [2] GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
+1134B..1134D  ; Grapheme_Base # Mc   [3] GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA
+11350         ; Grapheme_Base # Lo       GRANTHA OM
+1135D..11361  ; Grapheme_Base # Lo   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11362..11363  ; Grapheme_Base # Mc   [2] GRANTHA VOWEL SIGN VOCALIC L..GRANTHA VOWEL SIGN VOCALIC LL
+11400..11434  ; Grapheme_Base # Lo  [53] NEWA LETTER A..NEWA LETTER HA
+11435..11437  ; Grapheme_Base # Mc   [3] NEWA VOWEL SIGN AA..NEWA VOWEL SIGN II
+11440..11441  ; Grapheme_Base # Mc   [2] NEWA VOWEL SIGN O..NEWA VOWEL SIGN AU
+11445         ; Grapheme_Base # Mc       NEWA SIGN VISARGA
+11447..1144A  ; Grapheme_Base # Lo   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+1144B..1144F  ; Grapheme_Base # Po   [5] NEWA DANDA..NEWA ABBREVIATION SIGN
+11450..11459  ; Grapheme_Base # Nd  [10] NEWA DIGIT ZERO..NEWA DIGIT NINE
+1145A..1145B  ; Grapheme_Base # Po   [2] NEWA DOUBLE COMMA..NEWA PLACEHOLDER MARK
+1145D         ; Grapheme_Base # Po       NEWA INSERTION SIGN
+1145F..11461  ; Grapheme_Base # Lo   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; Grapheme_Base # Lo  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114B1..114B2  ; Grapheme_Base # Mc   [2] TIRHUTA VOWEL SIGN I..TIRHUTA VOWEL SIGN II
+114B9         ; Grapheme_Base # Mc       TIRHUTA VOWEL SIGN E
+114BB..114BC  ; Grapheme_Base # Mc   [2] TIRHUTA VOWEL SIGN AI..TIRHUTA VOWEL SIGN O
+114BE         ; Grapheme_Base # Mc       TIRHUTA VOWEL SIGN AU
+114C1         ; Grapheme_Base # Mc       TIRHUTA SIGN VISARGA
+114C4..114C5  ; Grapheme_Base # Lo   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C6         ; Grapheme_Base # Po       TIRHUTA ABBREVIATION SIGN
+114C7         ; Grapheme_Base # Lo       TIRHUTA OM
+114D0..114D9  ; Grapheme_Base # Nd  [10] TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE
+11580..115AE  ; Grapheme_Base # Lo  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115B0..115B1  ; Grapheme_Base # Mc   [2] SIDDHAM VOWEL SIGN I..SIDDHAM VOWEL SIGN II
+115B8..115BB  ; Grapheme_Base # Mc   [4] SIDDHAM VOWEL SIGN E..SIDDHAM VOWEL SIGN AU
+115BE         ; Grapheme_Base # Mc       SIDDHAM SIGN VISARGA
+115C1..115D7  ; Grapheme_Base # Po  [23] SIDDHAM SIGN SIDDHAM..SIDDHAM SECTION MARK WITH CIRCLES AND FOUR ENCLOSURES
+115D8..115DB  ; Grapheme_Base # Lo   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+11600..1162F  ; Grapheme_Base # Lo  [48] MODI LETTER A..MODI LETTER LLA
+11630..11632  ; Grapheme_Base # Mc   [3] MODI VOWEL SIGN AA..MODI VOWEL SIGN II
+1163B..1163C  ; Grapheme_Base # Mc   [2] MODI VOWEL SIGN O..MODI VOWEL SIGN AU
+1163E         ; Grapheme_Base # Mc       MODI SIGN VISARGA
+11641..11643  ; Grapheme_Base # Po   [3] MODI DANDA..MODI ABBREVIATION SIGN
+11644         ; Grapheme_Base # Lo       MODI SIGN HUVA
+11650..11659  ; Grapheme_Base # Nd  [10] MODI DIGIT ZERO..MODI DIGIT NINE
+11660..1166C  ; Grapheme_Base # Po  [13] MONGOLIAN BIRGA WITH ORNAMENT..MONGOLIAN TURNED SWIRL BIRGA WITH DOUBLE ORNAMENT
+11680..116AA  ; Grapheme_Base # Lo  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116AC         ; Grapheme_Base # Mc       TAKRI SIGN VISARGA
+116AE..116AF  ; Grapheme_Base # Mc   [2] TAKRI VOWEL SIGN I..TAKRI VOWEL SIGN II
+116B6         ; Grapheme_Base # Mc       TAKRI SIGN VIRAMA
+116B8         ; Grapheme_Base # Lo       TAKRI LETTER ARCHAIC KHA
+116B9         ; Grapheme_Base # Po       TAKRI ABBREVIATION SIGN
+116C0..116C9  ; Grapheme_Base # Nd  [10] TAKRI DIGIT ZERO..TAKRI DIGIT NINE
+11700..1171A  ; Grapheme_Base # Lo  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+11720..11721  ; Grapheme_Base # Mc   [2] AHOM VOWEL SIGN A..AHOM VOWEL SIGN AA
+11726         ; Grapheme_Base # Mc       AHOM VOWEL SIGN E
+11730..11739  ; Grapheme_Base # Nd  [10] AHOM DIGIT ZERO..AHOM DIGIT NINE
+1173A..1173B  ; Grapheme_Base # No   [2] AHOM NUMBER TEN..AHOM NUMBER TWENTY
+1173C..1173E  ; Grapheme_Base # Po   [3] AHOM SIGN SMALL SECTION..AHOM SIGN RULAI
+1173F         ; Grapheme_Base # So       AHOM SYMBOL VI
+11740..11746  ; Grapheme_Base # Lo   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; Grapheme_Base # Lo  [44] DOGRA LETTER A..DOGRA LETTER RRA
+1182C..1182E  ; Grapheme_Base # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+11838         ; Grapheme_Base # Mc       DOGRA SIGN VISARGA
+1183B         ; Grapheme_Base # Po       DOGRA ABBREVIATION SIGN
+118A0..118DF  ; Grapheme_Base # L&  [64] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+118E0..118E9  ; Grapheme_Base # Nd  [10] WARANG CITI DIGIT ZERO..WARANG CITI DIGIT NINE
+118EA..118F2  ; Grapheme_Base # No   [9] WARANG CITI NUMBER TEN..WARANG CITI NUMBER NINETY
+118FF..11906  ; Grapheme_Base # Lo   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; Grapheme_Base # Lo       DIVES AKURU LETTER O
+1190C..11913  ; Grapheme_Base # Lo   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; Grapheme_Base # Lo   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; Grapheme_Base # Lo  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+11931..11935  ; Grapheme_Base # Mc   [5] DIVES AKURU VOWEL SIGN I..DIVES AKURU VOWEL SIGN E
+11937..11938  ; Grapheme_Base # Mc   [2] DIVES AKURU VOWEL SIGN AI..DIVES AKURU VOWEL SIGN O
+1193D         ; Grapheme_Base # Mc       DIVES AKURU SIGN HALANTA
+1193F         ; Grapheme_Base # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11940         ; Grapheme_Base # Mc       DIVES AKURU MEDIAL YA
+11941         ; Grapheme_Base # Lo       DIVES AKURU INITIAL RA
+11942         ; Grapheme_Base # Mc       DIVES AKURU MEDIAL RA
+11944..11946  ; Grapheme_Base # Po   [3] DIVES AKURU DOUBLE DANDA..DIVES AKURU END OF TEXT MARK
+11950..11959  ; Grapheme_Base # Nd  [10] DIVES AKURU DIGIT ZERO..DIVES AKURU DIGIT NINE
+119A0..119A7  ; Grapheme_Base # Lo   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; Grapheme_Base # Lo  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119D1..119D3  ; Grapheme_Base # Mc   [3] NANDINAGARI VOWEL SIGN AA..NANDINAGARI VOWEL SIGN II
+119DC..119DF  ; Grapheme_Base # Mc   [4] NANDINAGARI VOWEL SIGN O..NANDINAGARI SIGN VISARGA
+119E1         ; Grapheme_Base # Lo       NANDINAGARI SIGN AVAGRAHA
+119E2         ; Grapheme_Base # Po       NANDINAGARI SIGN SIDDHAM
+119E3         ; Grapheme_Base # Lo       NANDINAGARI HEADSTROKE
+119E4         ; Grapheme_Base # Mc       NANDINAGARI VOWEL SIGN PRISHTHAMATRA E
+11A00         ; Grapheme_Base # Lo       ZANABAZAR SQUARE LETTER A
+11A0B..11A32  ; Grapheme_Base # Lo  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A39         ; Grapheme_Base # Mc       ZANABAZAR SQUARE SIGN VISARGA
+11A3A         ; Grapheme_Base # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A3F..11A46  ; Grapheme_Base # Po   [8] ZANABAZAR SQUARE INITIAL HEAD MARK..ZANABAZAR SQUARE CLOSING DOUBLE-LINED HEAD MARK
+11A50         ; Grapheme_Base # Lo       SOYOMBO LETTER A
+11A57..11A58  ; Grapheme_Base # Mc   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
+11A5C..11A89  ; Grapheme_Base # Lo  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A97         ; Grapheme_Base # Mc       SOYOMBO SIGN VISARGA
+11A9A..11A9C  ; Grapheme_Base # Po   [3] SOYOMBO MARK TSHEG..SOYOMBO MARK DOUBLE SHAD
+11A9D         ; Grapheme_Base # Lo       SOYOMBO MARK PLUTA
+11A9E..11AA2  ; Grapheme_Base # Po   [5] SOYOMBO HEAD MARK WITH MOON AND SUN AND TRIPLE FLAME..SOYOMBO TERMINAL MARK-2
+11AB0..11AF8  ; Grapheme_Base # Lo  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11B00..11B09  ; Grapheme_Base # Po  [10] DEVANAGARI HEAD MARK..DEVANAGARI SIGN MINDU
+11C00..11C08  ; Grapheme_Base # Lo   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; Grapheme_Base # Lo  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C2F         ; Grapheme_Base # Mc       BHAIKSUKI VOWEL SIGN AA
+11C3E         ; Grapheme_Base # Mc       BHAIKSUKI SIGN VISARGA
+11C40         ; Grapheme_Base # Lo       BHAIKSUKI SIGN AVAGRAHA
+11C41..11C45  ; Grapheme_Base # Po   [5] BHAIKSUKI DANDA..BHAIKSUKI GAP FILLER-2
+11C50..11C59  ; Grapheme_Base # Nd  [10] BHAIKSUKI DIGIT ZERO..BHAIKSUKI DIGIT NINE
+11C5A..11C6C  ; Grapheme_Base # No  [19] BHAIKSUKI NUMBER ONE..BHAIKSUKI HUNDREDS UNIT MARK
+11C70..11C71  ; Grapheme_Base # Po   [2] MARCHEN HEAD MARK..MARCHEN MARK SHAD
+11C72..11C8F  ; Grapheme_Base # Lo  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11CA9         ; Grapheme_Base # Mc       MARCHEN SUBJOINED LETTER YA
+11CB1         ; Grapheme_Base # Mc       MARCHEN VOWEL SIGN I
+11CB4         ; Grapheme_Base # Mc       MARCHEN VOWEL SIGN O
+11D00..11D06  ; Grapheme_Base # Lo   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; Grapheme_Base # Lo   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; Grapheme_Base # Lo  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D46         ; Grapheme_Base # Lo       MASARAM GONDI REPHA
+11D50..11D59  ; Grapheme_Base # Nd  [10] MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT NINE
+11D60..11D65  ; Grapheme_Base # Lo   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; Grapheme_Base # Lo   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; Grapheme_Base # Lo  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D8A..11D8E  ; Grapheme_Base # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D93..11D94  ; Grapheme_Base # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D96         ; Grapheme_Base # Mc       GUNJALA GONDI SIGN VISARGA
+11D98         ; Grapheme_Base # Lo       GUNJALA GONDI OM
+11DA0..11DA9  ; Grapheme_Base # Nd  [10] GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT NINE
+11EE0..11EF2  ; Grapheme_Base # Lo  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11EF5..11EF6  ; Grapheme_Base # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
+11EF7..11EF8  ; Grapheme_Base # Po   [2] MAKASAR PASSIMBANG..MAKASAR END OF SECTION
+11F02         ; Grapheme_Base # Lo       KAWI SIGN REPHA
+11F03         ; Grapheme_Base # Mc       KAWI SIGN VISARGA
+11F04..11F10  ; Grapheme_Base # Lo  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; Grapheme_Base # Lo  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11F34..11F35  ; Grapheme_Base # Mc   [2] KAWI VOWEL SIGN AA..KAWI VOWEL SIGN ALTERNATE AA
+11F3E..11F3F  ; Grapheme_Base # Mc   [2] KAWI VOWEL SIGN E..KAWI VOWEL SIGN AI
+11F41         ; Grapheme_Base # Mc       KAWI SIGN KILLER
+11F43..11F4F  ; Grapheme_Base # Po  [13] KAWI DANDA..KAWI PUNCTUATION CLOSING SPIRAL
+11F50..11F59  ; Grapheme_Base # Nd  [10] KAWI DIGIT ZERO..KAWI DIGIT NINE
+11FB0         ; Grapheme_Base # Lo       LISU LETTER YHA
+11FC0..11FD4  ; Grapheme_Base # No  [21] TAMIL FRACTION ONE THREE-HUNDRED-AND-TWENTIETH..TAMIL FRACTION DOWNSCALING FACTOR KIIZH
+11FD5..11FDC  ; Grapheme_Base # So   [8] TAMIL SIGN NEL..TAMIL SIGN MUKKURUNI
+11FDD..11FE0  ; Grapheme_Base # Sc   [4] TAMIL SIGN KAACU..TAMIL SIGN VARAAKAN
+11FE1..11FF1  ; Grapheme_Base # So  [17] TAMIL SIGN PAARAM..TAMIL SIGN VAKAIYARAA
+11FFF         ; Grapheme_Base # Po       TAMIL PUNCTUATION END OF TEXT
+12000..12399  ; Grapheme_Base # Lo [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12400..1246E  ; Grapheme_Base # Nl [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+12470..12474  ; Grapheme_Base # Po   [5] CUNEIFORM PUNCTUATION SIGN OLD ASSYRIAN WORD DIVIDER..CUNEIFORM PUNCTUATION SIGN DIAGONAL QUADCOLON
+12480..12543  ; Grapheme_Base # Lo [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; Grapheme_Base # Lo  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+12FF1..12FF2  ; Grapheme_Base # Po   [2] CYPRO-MINOAN SIGN CM301..CYPRO-MINOAN SIGN CM302
+13000..1342F  ; Grapheme_Base # Lo [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13441..13446  ; Grapheme_Base # Lo   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+14400..14646  ; Grapheme_Base # Lo [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; Grapheme_Base # Lo [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; Grapheme_Base # Lo  [31] MRO LETTER TA..MRO LETTER TEK
+16A60..16A69  ; Grapheme_Base # Nd  [10] MRO DIGIT ZERO..MRO DIGIT NINE
+16A6E..16A6F  ; Grapheme_Base # Po   [2] MRO DANDA..MRO DOUBLE DANDA
+16A70..16ABE  ; Grapheme_Base # Lo  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AC0..16AC9  ; Grapheme_Base # Nd  [10] TANGSA DIGIT ZERO..TANGSA DIGIT NINE
+16AD0..16AED  ; Grapheme_Base # Lo  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16AF5         ; Grapheme_Base # Po       BASSA VAH FULL STOP
+16B00..16B2F  ; Grapheme_Base # Lo  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B37..16B3B  ; Grapheme_Base # Po   [5] PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN VOS FEEM
+16B3C..16B3F  ; Grapheme_Base # So   [4] PAHAWH HMONG SIGN XYEEM NTXIV..PAHAWH HMONG SIGN XYEEM FAIB
+16B40..16B43  ; Grapheme_Base # Lm   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16B44         ; Grapheme_Base # Po       PAHAWH HMONG SIGN XAUS
+16B45         ; Grapheme_Base # So       PAHAWH HMONG SIGN CIM TSOV ROG
+16B50..16B59  ; Grapheme_Base # Nd  [10] PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT NINE
+16B5B..16B61  ; Grapheme_Base # No   [7] PAHAWH HMONG NUMBER TENS..PAHAWH HMONG NUMBER TRILLIONS
+16B63..16B77  ; Grapheme_Base # Lo  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; Grapheme_Base # Lo  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16E40..16E7F  ; Grapheme_Base # L&  [64] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+16E80..16E96  ; Grapheme_Base # No  [23] MEDEFAIDRIN DIGIT ZERO..MEDEFAIDRIN DIGIT THREE ALTERNATE FORM
+16E97..16E9A  ; Grapheme_Base # Po   [4] MEDEFAIDRIN COMMA..MEDEFAIDRIN EXCLAMATION OH
+16F00..16F4A  ; Grapheme_Base # Lo  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F50         ; Grapheme_Base # Lo       MIAO LETTER NASALIZATION
+16F51..16F87  ; Grapheme_Base # Mc  [55] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN UI
+16F93..16F9F  ; Grapheme_Base # Lm  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; Grapheme_Base # Lm   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE2         ; Grapheme_Base # Po       OLD CHINESE HOOK MARK
+16FE3         ; Grapheme_Base # Lm       OLD CHINESE ITERATION MARK
+16FF0..16FF1  ; Grapheme_Base # Mc   [2] VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
+17000..187F7  ; Grapheme_Base # Lo [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; Grapheme_Base # Lo [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; Grapheme_Base # Lo   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1AFF0..1AFF3  ; Grapheme_Base # Lm   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; Grapheme_Base # Lm   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; Grapheme_Base # Lm   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1B000..1B122  ; Grapheme_Base # Lo [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; Grapheme_Base # Lo       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; Grapheme_Base # Lo   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; Grapheme_Base # Lo       KATAKANA LETTER SMALL KO
+1B164..1B167  ; Grapheme_Base # Lo   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; Grapheme_Base # Lo [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; Grapheme_Base # Lo [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; Grapheme_Base # Lo  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; Grapheme_Base # Lo   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; Grapheme_Base # Lo  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1BC9C         ; Grapheme_Base # So       DUPLOYAN SIGN O WITH CROSS
+1BC9F         ; Grapheme_Base # Po       DUPLOYAN PUNCTUATION CHINOOK FULL STOP
+1CF50..1CFC3  ; Grapheme_Base # So [116] ZNAMENNY NEUME KRYUK..ZNAMENNY NEUME PAUK
+1D000..1D0F5  ; Grapheme_Base # So [246] BYZANTINE MUSICAL SYMBOL PSILI..BYZANTINE MUSICAL SYMBOL GORGON NEO KATO
+1D100..1D126  ; Grapheme_Base # So  [39] MUSICAL SYMBOL SINGLE BARLINE..MUSICAL SYMBOL DRUM CLEF-2
+1D129..1D164  ; Grapheme_Base # So  [60] MUSICAL SYMBOL MULTIPLE MEASURE REST..MUSICAL SYMBOL ONE HUNDRED TWENTY-EIGHTH NOTE
+1D166         ; Grapheme_Base # Mc       MUSICAL SYMBOL COMBINING SPRECHGESANG STEM
+1D16A..1D16C  ; Grapheme_Base # So   [3] MUSICAL SYMBOL FINGERED TREMOLO-1..MUSICAL SYMBOL FINGERED TREMOLO-3
+1D16D         ; Grapheme_Base # Mc       MUSICAL SYMBOL COMBINING AUGMENTATION DOT
+1D183..1D184  ; Grapheme_Base # So   [2] MUSICAL SYMBOL ARPEGGIATO UP..MUSICAL SYMBOL ARPEGGIATO DOWN
+1D18C..1D1A9  ; Grapheme_Base # So  [30] MUSICAL SYMBOL RINFORZANDO..MUSICAL SYMBOL DEGREE SLASH
+1D1AE..1D1EA  ; Grapheme_Base # So  [61] MUSICAL SYMBOL PEDAL MARK..MUSICAL SYMBOL KORON
+1D200..1D241  ; Grapheme_Base # So  [66] GREEK VOCAL NOTATION SYMBOL-1..GREEK INSTRUMENTAL NOTATION SYMBOL-54
+1D245         ; Grapheme_Base # So       GREEK MUSICAL LEIMMA
+1D2C0..1D2D3  ; Grapheme_Base # No  [20] KAKTOVIK NUMERAL ZERO..KAKTOVIK NUMERAL NINETEEN
+1D2E0..1D2F3  ; Grapheme_Base # No  [20] MAYAN NUMERAL ZERO..MAYAN NUMERAL NINETEEN
+1D300..1D356  ; Grapheme_Base # So  [87] MONOGRAM FOR EARTH..TETRAGRAM FOR FOSTERING
+1D360..1D378  ; Grapheme_Base # No  [25] COUNTING ROD UNIT DIGIT ONE..TALLY MARK FIVE
+1D400..1D454  ; Grapheme_Base # L&  [85] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D49C  ; Grapheme_Base # L&  [71] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; Grapheme_Base # L&   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; Grapheme_Base # L&       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; Grapheme_Base # L&   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; Grapheme_Base # L&   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B9  ; Grapheme_Base # L&  [12] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; Grapheme_Base # L&       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; Grapheme_Base # L&   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D505  ; Grapheme_Base # L&  [65] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; Grapheme_Base # L&   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; Grapheme_Base # L&   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; Grapheme_Base # L&   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D51E..1D539  ; Grapheme_Base # L&  [28] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; Grapheme_Base # L&   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; Grapheme_Base # L&   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; Grapheme_Base # L&       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; Grapheme_Base # L&   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D552..1D6A5  ; Grapheme_Base # L& [340] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6A8..1D6C0  ; Grapheme_Base # L&  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6C1         ; Grapheme_Base # Sm       MATHEMATICAL BOLD NABLA
+1D6C2..1D6DA  ; Grapheme_Base # L&  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DB         ; Grapheme_Base # Sm       MATHEMATICAL BOLD PARTIAL DIFFERENTIAL
+1D6DC..1D6FA  ; Grapheme_Base # L&  [31] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D6FB         ; Grapheme_Base # Sm       MATHEMATICAL ITALIC NABLA
+1D6FC..1D714  ; Grapheme_Base # L&  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D715         ; Grapheme_Base # Sm       MATHEMATICAL ITALIC PARTIAL DIFFERENTIAL
+1D716..1D734  ; Grapheme_Base # L&  [31] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D735         ; Grapheme_Base # Sm       MATHEMATICAL BOLD ITALIC NABLA
+1D736..1D74E  ; Grapheme_Base # L&  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D74F         ; Grapheme_Base # Sm       MATHEMATICAL BOLD ITALIC PARTIAL DIFFERENTIAL
+1D750..1D76E  ; Grapheme_Base # L&  [31] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D76F         ; Grapheme_Base # Sm       MATHEMATICAL SANS-SERIF BOLD NABLA
+1D770..1D788  ; Grapheme_Base # L&  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D789         ; Grapheme_Base # Sm       MATHEMATICAL SANS-SERIF BOLD PARTIAL DIFFERENTIAL
+1D78A..1D7A8  ; Grapheme_Base # L&  [31] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7A9         ; Grapheme_Base # Sm       MATHEMATICAL SANS-SERIF BOLD ITALIC NABLA
+1D7AA..1D7C2  ; Grapheme_Base # L&  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C3         ; Grapheme_Base # Sm       MATHEMATICAL SANS-SERIF BOLD ITALIC PARTIAL DIFFERENTIAL
+1D7C4..1D7CB  ; Grapheme_Base # L&   [8] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD SMALL DIGAMMA
+1D7CE..1D7FF  ; Grapheme_Base # Nd  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
+1D800..1D9FF  ; Grapheme_Base # So [512] SIGNWRITING HAND-FIST INDEX..SIGNWRITING HEAD
+1DA37..1DA3A  ; Grapheme_Base # So   [4] SIGNWRITING AIR BLOW SMALL ROTATIONS..SIGNWRITING BREATH EXHALE
+1DA6D..1DA74  ; Grapheme_Base # So   [8] SIGNWRITING SHOULDER HIP SPINE..SIGNWRITING TORSO-FLOORPLANE TWISTING
+1DA76..1DA83  ; Grapheme_Base # So  [14] SIGNWRITING LIMB COMBINATION..SIGNWRITING LOCATION DEPTH
+1DA85..1DA86  ; Grapheme_Base # So   [2] SIGNWRITING LOCATION TORSO..SIGNWRITING LOCATION LIMBS DIGITS
+1DA87..1DA8B  ; Grapheme_Base # Po   [5] SIGNWRITING COMMA..SIGNWRITING PARENTHESIS
+1DF00..1DF09  ; Grapheme_Base # L&  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0A         ; Grapheme_Base # Lo       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1DF0B..1DF1E  ; Grapheme_Base # L&  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; Grapheme_Base # L&   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E030..1E06D  ; Grapheme_Base # Lm  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E100..1E12C  ; Grapheme_Base # Lo  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E137..1E13D  ; Grapheme_Base # Lm   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E140..1E149  ; Grapheme_Base # Nd  [10] NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG PUACHUE HMONG DIGIT NINE
+1E14E         ; Grapheme_Base # Lo       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E14F         ; Grapheme_Base # So       NYIAKENG PUACHUE HMONG CIRCLED CA
+1E290..1E2AD  ; Grapheme_Base # Lo  [30] TOTO LETTER PA..TOTO LETTER A
+1E2C0..1E2EB  ; Grapheme_Base # Lo  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E2F0..1E2F9  ; Grapheme_Base # Nd  [10] WANCHO DIGIT ZERO..WANCHO DIGIT NINE
+1E2FF         ; Grapheme_Base # Sc       WANCHO NGUN SIGN
+1E4D0..1E4EA  ; Grapheme_Base # Lo  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E4EB         ; Grapheme_Base # Lm       NAG MUNDARI SIGN OJOD
+1E4F0..1E4F9  ; Grapheme_Base # Nd  [10] NAG MUNDARI DIGIT ZERO..NAG MUNDARI DIGIT NINE
+1E7E0..1E7E6  ; Grapheme_Base # Lo   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; Grapheme_Base # Lo   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; Grapheme_Base # Lo   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; Grapheme_Base # Lo  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; Grapheme_Base # Lo [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1E8C7..1E8CF  ; Grapheme_Base # No   [9] MENDE KIKAKUI DIGIT ONE..MENDE KIKAKUI DIGIT NINE
+1E900..1E943  ; Grapheme_Base # L&  [68] ADLAM CAPITAL LETTER ALIF..ADLAM SMALL LETTER SHA
+1E94B         ; Grapheme_Base # Lm       ADLAM NASALIZATION MARK
+1E950..1E959  ; Grapheme_Base # Nd  [10] ADLAM DIGIT ZERO..ADLAM DIGIT NINE
+1E95E..1E95F  ; Grapheme_Base # Po   [2] ADLAM INITIAL EXCLAMATION MARK..ADLAM INITIAL QUESTION MARK
+1EC71..1ECAB  ; Grapheme_Base # No  [59] INDIC SIYAQ NUMBER ONE..INDIC SIYAQ NUMBER PREFIXED NINE
+1ECAC         ; Grapheme_Base # So       INDIC SIYAQ PLACEHOLDER
+1ECAD..1ECAF  ; Grapheme_Base # No   [3] INDIC SIYAQ FRACTION ONE QUARTER..INDIC SIYAQ FRACTION THREE QUARTERS
+1ECB0         ; Grapheme_Base # Sc       INDIC SIYAQ RUPEE MARK
+1ECB1..1ECB4  ; Grapheme_Base # No   [4] INDIC SIYAQ NUMBER ALTERNATE ONE..INDIC SIYAQ ALTERNATE LAKH MARK
+1ED01..1ED2D  ; Grapheme_Base # No  [45] OTTOMAN SIYAQ NUMBER ONE..OTTOMAN SIYAQ NUMBER NINETY THOUSAND
+1ED2E         ; Grapheme_Base # So       OTTOMAN SIYAQ MARRATAN
+1ED2F..1ED3D  ; Grapheme_Base # No  [15] OTTOMAN SIYAQ ALTERNATE NUMBER TWO..OTTOMAN SIYAQ FRACTION ONE SIXTH
+1EE00..1EE03  ; Grapheme_Base # Lo   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; Grapheme_Base # Lo  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; Grapheme_Base # Lo   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; Grapheme_Base # Lo  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; Grapheme_Base # Lo   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; Grapheme_Base # Lo   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; Grapheme_Base # Lo   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; Grapheme_Base # Lo   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; Grapheme_Base # Lo   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; Grapheme_Base # Lo   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; Grapheme_Base # Lo   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; Grapheme_Base # Lo   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; Grapheme_Base # Lo       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; Grapheme_Base # Lo  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; Grapheme_Base # Lo  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; Grapheme_Base # Lo   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; Grapheme_Base # Lo   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; Grapheme_Base # Lo  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+1EEF0..1EEF1  ; Grapheme_Base # Sm   [2] ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WITH TATWEEL..ARABIC MATHEMATICAL OPERATOR HAH WITH DAL
+1F000..1F02B  ; Grapheme_Base # So  [44] MAHJONG TILE EAST WIND..MAHJONG TILE BACK
+1F030..1F093  ; Grapheme_Base # So [100] DOMINO TILE HORIZONTAL BACK..DOMINO TILE VERTICAL-06-06
+1F0A0..1F0AE  ; Grapheme_Base # So  [15] PLAYING CARD BACK..PLAYING CARD KING OF SPADES
+1F0B1..1F0BF  ; Grapheme_Base # So  [15] PLAYING CARD ACE OF HEARTS..PLAYING CARD RED JOKER
+1F0C1..1F0CF  ; Grapheme_Base # So  [15] PLAYING CARD ACE OF DIAMONDS..PLAYING CARD BLACK JOKER
+1F0D1..1F0F5  ; Grapheme_Base # So  [37] PLAYING CARD ACE OF CLUBS..PLAYING CARD TRUMP-21
+1F100..1F10C  ; Grapheme_Base # No  [13] DIGIT ZERO FULL STOP..DINGBAT NEGATIVE CIRCLED SANS-SERIF DIGIT ZERO
+1F10D..1F1AD  ; Grapheme_Base # So [161] CIRCLED ZERO WITH SLASH..MASK WORK SYMBOL
+1F1E6..1F202  ; Grapheme_Base # So  [29] REGIONAL INDICATOR SYMBOL LETTER A..SQUARED KATAKANA SA
+1F210..1F23B  ; Grapheme_Base # So  [44] SQUARED CJK UNIFIED IDEOGRAPH-624B..SQUARED CJK UNIFIED IDEOGRAPH-914D
+1F240..1F248  ; Grapheme_Base # So   [9] TORTOISE SHELL BRACKETED CJK UNIFIED IDEOGRAPH-672C..TORTOISE SHELL BRACKETED CJK UNIFIED IDEOGRAPH-6557
+1F250..1F251  ; Grapheme_Base # So   [2] CIRCLED IDEOGRAPH ADVANTAGE..CIRCLED IDEOGRAPH ACCEPT
+1F260..1F265  ; Grapheme_Base # So   [6] ROUNDED SYMBOL FOR FU..ROUNDED SYMBOL FOR CAI
+1F300..1F3FA  ; Grapheme_Base # So [251] CYCLONE..AMPHORA
+1F3FB..1F3FF  ; Grapheme_Base # Sk   [5] EMOJI MODIFIER FITZPATRICK TYPE-1-2..EMOJI MODIFIER FITZPATRICK TYPE-6
+1F400..1F6D7  ; Grapheme_Base # So [728] RAT..ELEVATOR
+1F6DC..1F6EC  ; Grapheme_Base # So  [17] WIRELESS..AIRPLANE ARRIVING
+1F6F0..1F6FC  ; Grapheme_Base # So  [13] SATELLITE..ROLLER SKATE
+1F700..1F776  ; Grapheme_Base # So [119] ALCHEMICAL SYMBOL FOR QUINTESSENCE..LUNAR ECLIPSE
+1F77B..1F7D9  ; Grapheme_Base # So  [95] HAUMEA..NINE POINTED WHITE STAR
+1F7E0..1F7EB  ; Grapheme_Base # So  [12] LARGE ORANGE CIRCLE..LARGE BROWN SQUARE
+1F7F0         ; Grapheme_Base # So       HEAVY EQUALS SIGN
+1F800..1F80B  ; Grapheme_Base # So  [12] LEFTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD..DOWNWARDS ARROW WITH LARGE TRIANGLE ARROWHEAD
+1F810..1F847  ; Grapheme_Base # So  [56] LEFTWARDS ARROW WITH SMALL EQUILATERAL ARROWHEAD..DOWNWARDS HEAVY ARROW
+1F850..1F859  ; Grapheme_Base # So  [10] LEFTWARDS SANS-SERIF ARROW..UP DOWN SANS-SERIF ARROW
+1F860..1F887  ; Grapheme_Base # So  [40] WIDE-HEADED LEFTWARDS LIGHT BARB ARROW..WIDE-HEADED SOUTH WEST VERY HEAVY BARB ARROW
+1F890..1F8AD  ; Grapheme_Base # So  [30] LEFTWARDS TRIANGLE ARROWHEAD..WHITE ARROW SHAFT WIDTH TWO THIRDS
+1F8B0..1F8B1  ; Grapheme_Base # So   [2] ARROW POINTING UPWARDS THEN NORTH WEST..ARROW POINTING RIGHTWARDS THEN CURVING SOUTH WEST
+1F900..1FA53  ; Grapheme_Base # So [340] CIRCLED CROSS FORMEE WITH FOUR DOTS..BLACK CHESS KNIGHT-BISHOP
+1FA60..1FA6D  ; Grapheme_Base # So  [14] XIANGQI RED GENERAL..XIANGQI BLACK SOLDIER
+1FA70..1FA7C  ; Grapheme_Base # So  [13] BALLET SHOES..CRUTCH
+1FA80..1FA88  ; Grapheme_Base # So   [9] YO-YO..FLUTE
+1FA90..1FABD  ; Grapheme_Base # So  [46] RINGED PLANET..WING
+1FABF..1FAC5  ; Grapheme_Base # So   [7] GOOSE..PERSON WITH CROWN
+1FACE..1FADB  ; Grapheme_Base # So  [14] MOOSE..PEA POD
+1FAE0..1FAE8  ; Grapheme_Base # So   [9] MELTING FACE..SHAKING FACE
+1FAF0..1FAF8  ; Grapheme_Base # So   [9] HAND WITH INDEX FINGER AND THUMB CROSSED..RIGHTWARDS PUSHING HAND
+1FB00..1FB92  ; Grapheme_Base # So [147] BLOCK SEXTANT-1..UPPER HALF INVERSE MEDIUM SHADE AND LOWER HALF BLOCK
+1FB94..1FBCA  ; Grapheme_Base # So  [55] LEFT HALF INVERSE MEDIUM SHADE AND RIGHT HALF BLOCK..WHITE UP-POINTING CHEVRON
+1FBF0..1FBF9  ; Grapheme_Base # Nd  [10] SEGMENTED DIGIT ZERO..SEGMENTED DIGIT NINE
+20000..2A6DF  ; Grapheme_Base # Lo [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; Grapheme_Base # Lo [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; Grapheme_Base # Lo [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; Grapheme_Base # Lo [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; Grapheme_Base # Lo [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; Grapheme_Base # Lo [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; Grapheme_Base # Lo [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; Grapheme_Base # Lo [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+
+# Total code points: 146986
+
+# ================================================
+
+# Derived Property: Grapheme_Link (deprecated)
+#  Generated from: Canonical_Combining_Class=Virama
+#  Use Canonical_Combining_Class=Virama directly instead
+
+094D          ; Grapheme_Link # Mn       DEVANAGARI SIGN VIRAMA
+09CD          ; Grapheme_Link # Mn       BENGALI SIGN VIRAMA
+0A4D          ; Grapheme_Link # Mn       GURMUKHI SIGN VIRAMA
+0ACD          ; Grapheme_Link # Mn       GUJARATI SIGN VIRAMA
+0B4D          ; Grapheme_Link # Mn       ORIYA SIGN VIRAMA
+0BCD          ; Grapheme_Link # Mn       TAMIL SIGN VIRAMA
+0C4D          ; Grapheme_Link # Mn       TELUGU SIGN VIRAMA
+0CCD          ; Grapheme_Link # Mn       KANNADA SIGN VIRAMA
+0D3B..0D3C    ; Grapheme_Link # Mn   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D4D          ; Grapheme_Link # Mn       MALAYALAM SIGN VIRAMA
+0DCA          ; Grapheme_Link # Mn       SINHALA SIGN AL-LAKUNA
+0E3A          ; Grapheme_Link # Mn       THAI CHARACTER PHINTHU
+0EBA          ; Grapheme_Link # Mn       LAO SIGN PALI VIRAMA
+0F84          ; Grapheme_Link # Mn       TIBETAN MARK HALANTA
+1039..103A    ; Grapheme_Link # Mn   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+1714          ; Grapheme_Link # Mn       TAGALOG SIGN VIRAMA
+1715          ; Grapheme_Link # Mc       TAGALOG SIGN PAMUDPOD
+1734          ; Grapheme_Link # Mc       HANUNOO SIGN PAMUDPOD
+17D2          ; Grapheme_Link # Mn       KHMER SIGN COENG
+1A60          ; Grapheme_Link # Mn       TAI THAM SIGN SAKOT
+1B44          ; Grapheme_Link # Mc       BALINESE ADEG ADEG
+1BAA          ; Grapheme_Link # Mc       SUNDANESE SIGN PAMAAEH
+1BAB          ; Grapheme_Link # Mn       SUNDANESE SIGN VIRAMA
+1BF2..1BF3    ; Grapheme_Link # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
+2D7F          ; Grapheme_Link # Mn       TIFINAGH CONSONANT JOINER
+A806          ; Grapheme_Link # Mn       SYLOTI NAGRI SIGN HASANTA
+A82C          ; Grapheme_Link # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A8C4          ; Grapheme_Link # Mn       SAURASHTRA SIGN VIRAMA
+A953          ; Grapheme_Link # Mc       REJANG VIRAMA
+A9C0          ; Grapheme_Link # Mc       JAVANESE PANGKON
+AAF6          ; Grapheme_Link # Mn       MEETEI MAYEK VIRAMA
+ABED          ; Grapheme_Link # Mn       MEETEI MAYEK APUN IYEK
+10A3F         ; Grapheme_Link # Mn       KHAROSHTHI VIRAMA
+11046         ; Grapheme_Link # Mn       BRAHMI VIRAMA
+11070         ; Grapheme_Link # Mn       BRAHMI SIGN OLD TAMIL VIRAMA
+1107F         ; Grapheme_Link # Mn       BRAHMI NUMBER JOINER
+110B9         ; Grapheme_Link # Mn       KAITHI SIGN VIRAMA
+11133..11134  ; Grapheme_Link # Mn   [2] CHAKMA VIRAMA..CHAKMA MAAYYAA
+111C0         ; Grapheme_Link # Mc       SHARADA SIGN VIRAMA
+11235         ; Grapheme_Link # Mc       KHOJKI SIGN VIRAMA
+112EA         ; Grapheme_Link # Mn       KHUDAWADI SIGN VIRAMA
+1134D         ; Grapheme_Link # Mc       GRANTHA SIGN VIRAMA
+11442         ; Grapheme_Link # Mn       NEWA SIGN VIRAMA
+114C2         ; Grapheme_Link # Mn       TIRHUTA SIGN VIRAMA
+115BF         ; Grapheme_Link # Mn       SIDDHAM SIGN VIRAMA
+1163F         ; Grapheme_Link # Mn       MODI SIGN VIRAMA
+116B6         ; Grapheme_Link # Mc       TAKRI SIGN VIRAMA
+1172B         ; Grapheme_Link # Mn       AHOM SIGN KILLER
+11839         ; Grapheme_Link # Mn       DOGRA SIGN VIRAMA
+1193D         ; Grapheme_Link # Mc       DIVES AKURU SIGN HALANTA
+1193E         ; Grapheme_Link # Mn       DIVES AKURU VIRAMA
+119E0         ; Grapheme_Link # Mn       NANDINAGARI SIGN VIRAMA
+11A34         ; Grapheme_Link # Mn       ZANABAZAR SQUARE SIGN VIRAMA
+11A47         ; Grapheme_Link # Mn       ZANABAZAR SQUARE SUBJOINER
+11A99         ; Grapheme_Link # Mn       SOYOMBO SUBJOINER
+11C3F         ; Grapheme_Link # Mn       BHAIKSUKI SIGN VIRAMA
+11D44..11D45  ; Grapheme_Link # Mn   [2] MASARAM GONDI SIGN HALANTA..MASARAM GONDI VIRAMA
+11D97         ; Grapheme_Link # Mn       GUNJALA GONDI VIRAMA
+11F41         ; Grapheme_Link # Mc       KAWI SIGN KILLER
+11F42         ; Grapheme_Link # Mn       KAWI CONJOINER
+
+# Total code points: 65
+
+# EOF
diff --git a/app/src/main/cpp/libcxx/utils/data/unicode/DerivedGeneralCategory.txt b/app/src/main/cpp/libcxx/utils/data/unicode/DerivedGeneralCategory.txt
new file mode 100644
index 0000000..c6013ef
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/data/unicode/DerivedGeneralCategory.txt
@@ -0,0 +1,4231 @@
+# DerivedGeneralCategory-15.0.0.txt
+# Date: 2022-04-26, 23:14:35 GMT
+# © 2022 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+#
+# Unicode Character Database
+#   For documentation, see https://www.unicode.org/reports/tr44/
+
+# ================================================
+
+# Property:	General_Category
+
+# ================================================
+
+# General_Category=Unassigned
+
+0378..0379    ; Cn #   [2] <reserved-0378>..<reserved-0379>
+0380..0383    ; Cn #   [4] <reserved-0380>..<reserved-0383>
+038B          ; Cn #       <reserved-038B>
+038D          ; Cn #       <reserved-038D>
+03A2          ; Cn #       <reserved-03A2>
+0530          ; Cn #       <reserved-0530>
+0557..0558    ; Cn #   [2] <reserved-0557>..<reserved-0558>
+058B..058C    ; Cn #   [2] <reserved-058B>..<reserved-058C>
+0590          ; Cn #       <reserved-0590>
+05C8..05CF    ; Cn #   [8] <reserved-05C8>..<reserved-05CF>
+05EB..05EE    ; Cn #   [4] <reserved-05EB>..<reserved-05EE>
+05F5..05FF    ; Cn #  [11] <reserved-05F5>..<reserved-05FF>
+070E          ; Cn #       <reserved-070E>
+074B..074C    ; Cn #   [2] <reserved-074B>..<reserved-074C>
+07B2..07BF    ; Cn #  [14] <reserved-07B2>..<reserved-07BF>
+07FB..07FC    ; Cn #   [2] <reserved-07FB>..<reserved-07FC>
+082E..082F    ; Cn #   [2] <reserved-082E>..<reserved-082F>
+083F          ; Cn #       <reserved-083F>
+085C..085D    ; Cn #   [2] <reserved-085C>..<reserved-085D>
+085F          ; Cn #       <reserved-085F>
+086B..086F    ; Cn #   [5] <reserved-086B>..<reserved-086F>
+088F          ; Cn #       <reserved-088F>
+0892..0897    ; Cn #   [6] <reserved-0892>..<reserved-0897>
+0984          ; Cn #       <reserved-0984>
+098D..098E    ; Cn #   [2] <reserved-098D>..<reserved-098E>
+0991..0992    ; Cn #   [2] <reserved-0991>..<reserved-0992>
+09A9          ; Cn #       <reserved-09A9>
+09B1          ; Cn #       <reserved-09B1>
+09B3..09B5    ; Cn #   [3] <reserved-09B3>..<reserved-09B5>
+09BA..09BB    ; Cn #   [2] <reserved-09BA>..<reserved-09BB>
+09C5..09C6    ; Cn #   [2] <reserved-09C5>..<reserved-09C6>
+09C9..09CA    ; Cn #   [2] <reserved-09C9>..<reserved-09CA>
+09CF..09D6    ; Cn #   [8] <reserved-09CF>..<reserved-09D6>
+09D8..09DB    ; Cn #   [4] <reserved-09D8>..<reserved-09DB>
+09DE          ; Cn #       <reserved-09DE>
+09E4..09E5    ; Cn #   [2] <reserved-09E4>..<reserved-09E5>
+09FF..0A00    ; Cn #   [2] <reserved-09FF>..<reserved-0A00>
+0A04          ; Cn #       <reserved-0A04>
+0A0B..0A0E    ; Cn #   [4] <reserved-0A0B>..<reserved-0A0E>
+0A11..0A12    ; Cn #   [2] <reserved-0A11>..<reserved-0A12>
+0A29          ; Cn #       <reserved-0A29>
+0A31          ; Cn #       <reserved-0A31>
+0A34          ; Cn #       <reserved-0A34>
+0A37          ; Cn #       <reserved-0A37>
+0A3A..0A3B    ; Cn #   [2] <reserved-0A3A>..<reserved-0A3B>
+0A3D          ; Cn #       <reserved-0A3D>
+0A43..0A46    ; Cn #   [4] <reserved-0A43>..<reserved-0A46>
+0A49..0A4A    ; Cn #   [2] <reserved-0A49>..<reserved-0A4A>
+0A4E..0A50    ; Cn #   [3] <reserved-0A4E>..<reserved-0A50>
+0A52..0A58    ; Cn #   [7] <reserved-0A52>..<reserved-0A58>
+0A5D          ; Cn #       <reserved-0A5D>
+0A5F..0A65    ; Cn #   [7] <reserved-0A5F>..<reserved-0A65>
+0A77..0A80    ; Cn #  [10] <reserved-0A77>..<reserved-0A80>
+0A84          ; Cn #       <reserved-0A84>
+0A8E          ; Cn #       <reserved-0A8E>
+0A92          ; Cn #       <reserved-0A92>
+0AA9          ; Cn #       <reserved-0AA9>
+0AB1          ; Cn #       <reserved-0AB1>
+0AB4          ; Cn #       <reserved-0AB4>
+0ABA..0ABB    ; Cn #   [2] <reserved-0ABA>..<reserved-0ABB>
+0AC6          ; Cn #       <reserved-0AC6>
+0ACA          ; Cn #       <reserved-0ACA>
+0ACE..0ACF    ; Cn #   [2] <reserved-0ACE>..<reserved-0ACF>
+0AD1..0ADF    ; Cn #  [15] <reserved-0AD1>..<reserved-0ADF>
+0AE4..0AE5    ; Cn #   [2] <reserved-0AE4>..<reserved-0AE5>
+0AF2..0AF8    ; Cn #   [7] <reserved-0AF2>..<reserved-0AF8>
+0B00          ; Cn #       <reserved-0B00>
+0B04          ; Cn #       <reserved-0B04>
+0B0D..0B0E    ; Cn #   [2] <reserved-0B0D>..<reserved-0B0E>
+0B11..0B12    ; Cn #   [2] <reserved-0B11>..<reserved-0B12>
+0B29          ; Cn #       <reserved-0B29>
+0B31          ; Cn #       <reserved-0B31>
+0B34          ; Cn #       <reserved-0B34>
+0B3A..0B3B    ; Cn #   [2] <reserved-0B3A>..<reserved-0B3B>
+0B45..0B46    ; Cn #   [2] <reserved-0B45>..<reserved-0B46>
+0B49..0B4A    ; Cn #   [2] <reserved-0B49>..<reserved-0B4A>
+0B4E..0B54    ; Cn #   [7] <reserved-0B4E>..<reserved-0B54>
+0B58..0B5B    ; Cn #   [4] <reserved-0B58>..<reserved-0B5B>
+0B5E          ; Cn #       <reserved-0B5E>
+0B64..0B65    ; Cn #   [2] <reserved-0B64>..<reserved-0B65>
+0B78..0B81    ; Cn #  [10] <reserved-0B78>..<reserved-0B81>
+0B84          ; Cn #       <reserved-0B84>
+0B8B..0B8D    ; Cn #   [3] <reserved-0B8B>..<reserved-0B8D>
+0B91          ; Cn #       <reserved-0B91>
+0B96..0B98    ; Cn #   [3] <reserved-0B96>..<reserved-0B98>
+0B9B          ; Cn #       <reserved-0B9B>
+0B9D          ; Cn #       <reserved-0B9D>
+0BA0..0BA2    ; Cn #   [3] <reserved-0BA0>..<reserved-0BA2>
+0BA5..0BA7    ; Cn #   [3] <reserved-0BA5>..<reserved-0BA7>
+0BAB..0BAD    ; Cn #   [3] <reserved-0BAB>..<reserved-0BAD>
+0BBA..0BBD    ; Cn #   [4] <reserved-0BBA>..<reserved-0BBD>
+0BC3..0BC5    ; Cn #   [3] <reserved-0BC3>..<reserved-0BC5>
+0BC9          ; Cn #       <reserved-0BC9>
+0BCE..0BCF    ; Cn #   [2] <reserved-0BCE>..<reserved-0BCF>
+0BD1..0BD6    ; Cn #   [6] <reserved-0BD1>..<reserved-0BD6>
+0BD8..0BE5    ; Cn #  [14] <reserved-0BD8>..<reserved-0BE5>
+0BFB..0BFF    ; Cn #   [5] <reserved-0BFB>..<reserved-0BFF>
+0C0D          ; Cn #       <reserved-0C0D>
+0C11          ; Cn #       <reserved-0C11>
+0C29          ; Cn #       <reserved-0C29>
+0C3A..0C3B    ; Cn #   [2] <reserved-0C3A>..<reserved-0C3B>
+0C45          ; Cn #       <reserved-0C45>
+0C49          ; Cn #       <reserved-0C49>
+0C4E..0C54    ; Cn #   [7] <reserved-0C4E>..<reserved-0C54>
+0C57          ; Cn #       <reserved-0C57>
+0C5B..0C5C    ; Cn #   [2] <reserved-0C5B>..<reserved-0C5C>
+0C5E..0C5F    ; Cn #   [2] <reserved-0C5E>..<reserved-0C5F>
+0C64..0C65    ; Cn #   [2] <reserved-0C64>..<reserved-0C65>
+0C70..0C76    ; Cn #   [7] <reserved-0C70>..<reserved-0C76>
+0C8D          ; Cn #       <reserved-0C8D>
+0C91          ; Cn #       <reserved-0C91>
+0CA9          ; Cn #       <reserved-0CA9>
+0CB4          ; Cn #       <reserved-0CB4>
+0CBA..0CBB    ; Cn #   [2] <reserved-0CBA>..<reserved-0CBB>
+0CC5          ; Cn #       <reserved-0CC5>
+0CC9          ; Cn #       <reserved-0CC9>
+0CCE..0CD4    ; Cn #   [7] <reserved-0CCE>..<reserved-0CD4>
+0CD7..0CDC    ; Cn #   [6] <reserved-0CD7>..<reserved-0CDC>
+0CDF          ; Cn #       <reserved-0CDF>
+0CE4..0CE5    ; Cn #   [2] <reserved-0CE4>..<reserved-0CE5>
+0CF0          ; Cn #       <reserved-0CF0>
+0CF4..0CFF    ; Cn #  [12] <reserved-0CF4>..<reserved-0CFF>
+0D0D          ; Cn #       <reserved-0D0D>
+0D11          ; Cn #       <reserved-0D11>
+0D45          ; Cn #       <reserved-0D45>
+0D49          ; Cn #       <reserved-0D49>
+0D50..0D53    ; Cn #   [4] <reserved-0D50>..<reserved-0D53>
+0D64..0D65    ; Cn #   [2] <reserved-0D64>..<reserved-0D65>
+0D80          ; Cn #       <reserved-0D80>
+0D84          ; Cn #       <reserved-0D84>
+0D97..0D99    ; Cn #   [3] <reserved-0D97>..<reserved-0D99>
+0DB2          ; Cn #       <reserved-0DB2>
+0DBC          ; Cn #       <reserved-0DBC>
+0DBE..0DBF    ; Cn #   [2] <reserved-0DBE>..<reserved-0DBF>
+0DC7..0DC9    ; Cn #   [3] <reserved-0DC7>..<reserved-0DC9>
+0DCB..0DCE    ; Cn #   [4] <reserved-0DCB>..<reserved-0DCE>
+0DD5          ; Cn #       <reserved-0DD5>
+0DD7          ; Cn #       <reserved-0DD7>
+0DE0..0DE5    ; Cn #   [6] <reserved-0DE0>..<reserved-0DE5>
+0DF0..0DF1    ; Cn #   [2] <reserved-0DF0>..<reserved-0DF1>
+0DF5..0E00    ; Cn #  [12] <reserved-0DF5>..<reserved-0E00>
+0E3B..0E3E    ; Cn #   [4] <reserved-0E3B>..<reserved-0E3E>
+0E5C..0E80    ; Cn #  [37] <reserved-0E5C>..<reserved-0E80>
+0E83          ; Cn #       <reserved-0E83>
+0E85          ; Cn #       <reserved-0E85>
+0E8B          ; Cn #       <reserved-0E8B>
+0EA4          ; Cn #       <reserved-0EA4>
+0EA6          ; Cn #       <reserved-0EA6>
+0EBE..0EBF    ; Cn #   [2] <reserved-0EBE>..<reserved-0EBF>
+0EC5          ; Cn #       <reserved-0EC5>
+0EC7          ; Cn #       <reserved-0EC7>
+0ECF          ; Cn #       <reserved-0ECF>
+0EDA..0EDB    ; Cn #   [2] <reserved-0EDA>..<reserved-0EDB>
+0EE0..0EFF    ; Cn #  [32] <reserved-0EE0>..<reserved-0EFF>
+0F48          ; Cn #       <reserved-0F48>
+0F6D..0F70    ; Cn #   [4] <reserved-0F6D>..<reserved-0F70>
+0F98          ; Cn #       <reserved-0F98>
+0FBD          ; Cn #       <reserved-0FBD>
+0FCD          ; Cn #       <reserved-0FCD>
+0FDB..0FFF    ; Cn #  [37] <reserved-0FDB>..<reserved-0FFF>
+10C6          ; Cn #       <reserved-10C6>
+10C8..10CC    ; Cn #   [5] <reserved-10C8>..<reserved-10CC>
+10CE..10CF    ; Cn #   [2] <reserved-10CE>..<reserved-10CF>
+1249          ; Cn #       <reserved-1249>
+124E..124F    ; Cn #   [2] <reserved-124E>..<reserved-124F>
+1257          ; Cn #       <reserved-1257>
+1259          ; Cn #       <reserved-1259>
+125E..125F    ; Cn #   [2] <reserved-125E>..<reserved-125F>
+1289          ; Cn #       <reserved-1289>
+128E..128F    ; Cn #   [2] <reserved-128E>..<reserved-128F>
+12B1          ; Cn #       <reserved-12B1>
+12B6..12B7    ; Cn #   [2] <reserved-12B6>..<reserved-12B7>
+12BF          ; Cn #       <reserved-12BF>
+12C1          ; Cn #       <reserved-12C1>
+12C6..12C7    ; Cn #   [2] <reserved-12C6>..<reserved-12C7>
+12D7          ; Cn #       <reserved-12D7>
+1311          ; Cn #       <reserved-1311>
+1316..1317    ; Cn #   [2] <reserved-1316>..<reserved-1317>
+135B..135C    ; Cn #   [2] <reserved-135B>..<reserved-135C>
+137D..137F    ; Cn #   [3] <reserved-137D>..<reserved-137F>
+139A..139F    ; Cn #   [6] <reserved-139A>..<reserved-139F>
+13F6..13F7    ; Cn #   [2] <reserved-13F6>..<reserved-13F7>
+13FE..13FF    ; Cn #   [2] <reserved-13FE>..<reserved-13FF>
+169D..169F    ; Cn #   [3] <reserved-169D>..<reserved-169F>
+16F9..16FF    ; Cn #   [7] <reserved-16F9>..<reserved-16FF>
+1716..171E    ; Cn #   [9] <reserved-1716>..<reserved-171E>
+1737..173F    ; Cn #   [9] <reserved-1737>..<reserved-173F>
+1754..175F    ; Cn #  [12] <reserved-1754>..<reserved-175F>
+176D          ; Cn #       <reserved-176D>
+1771          ; Cn #       <reserved-1771>
+1774..177F    ; Cn #  [12] <reserved-1774>..<reserved-177F>
+17DE..17DF    ; Cn #   [2] <reserved-17DE>..<reserved-17DF>
+17EA..17EF    ; Cn #   [6] <reserved-17EA>..<reserved-17EF>
+17FA..17FF    ; Cn #   [6] <reserved-17FA>..<reserved-17FF>
+181A..181F    ; Cn #   [6] <reserved-181A>..<reserved-181F>
+1879..187F    ; Cn #   [7] <reserved-1879>..<reserved-187F>
+18AB..18AF    ; Cn #   [5] <reserved-18AB>..<reserved-18AF>
+18F6..18FF    ; Cn #  [10] <reserved-18F6>..<reserved-18FF>
+191F          ; Cn #       <reserved-191F>
+192C..192F    ; Cn #   [4] <reserved-192C>..<reserved-192F>
+193C..193F    ; Cn #   [4] <reserved-193C>..<reserved-193F>
+1941..1943    ; Cn #   [3] <reserved-1941>..<reserved-1943>
+196E..196F    ; Cn #   [2] <reserved-196E>..<reserved-196F>
+1975..197F    ; Cn #  [11] <reserved-1975>..<reserved-197F>
+19AC..19AF    ; Cn #   [4] <reserved-19AC>..<reserved-19AF>
+19CA..19CF    ; Cn #   [6] <reserved-19CA>..<reserved-19CF>
+19DB..19DD    ; Cn #   [3] <reserved-19DB>..<reserved-19DD>
+1A1C..1A1D    ; Cn #   [2] <reserved-1A1C>..<reserved-1A1D>
+1A5F          ; Cn #       <reserved-1A5F>
+1A7D..1A7E    ; Cn #   [2] <reserved-1A7D>..<reserved-1A7E>
+1A8A..1A8F    ; Cn #   [6] <reserved-1A8A>..<reserved-1A8F>
+1A9A..1A9F    ; Cn #   [6] <reserved-1A9A>..<reserved-1A9F>
+1AAE..1AAF    ; Cn #   [2] <reserved-1AAE>..<reserved-1AAF>
+1ACF..1AFF    ; Cn #  [49] <reserved-1ACF>..<reserved-1AFF>
+1B4D..1B4F    ; Cn #   [3] <reserved-1B4D>..<reserved-1B4F>
+1B7F          ; Cn #       <reserved-1B7F>
+1BF4..1BFB    ; Cn #   [8] <reserved-1BF4>..<reserved-1BFB>
+1C38..1C3A    ; Cn #   [3] <reserved-1C38>..<reserved-1C3A>
+1C4A..1C4C    ; Cn #   [3] <reserved-1C4A>..<reserved-1C4C>
+1C89..1C8F    ; Cn #   [7] <reserved-1C89>..<reserved-1C8F>
+1CBB..1CBC    ; Cn #   [2] <reserved-1CBB>..<reserved-1CBC>
+1CC8..1CCF    ; Cn #   [8] <reserved-1CC8>..<reserved-1CCF>
+1CFB..1CFF    ; Cn #   [5] <reserved-1CFB>..<reserved-1CFF>
+1F16..1F17    ; Cn #   [2] <reserved-1F16>..<reserved-1F17>
+1F1E..1F1F    ; Cn #   [2] <reserved-1F1E>..<reserved-1F1F>
+1F46..1F47    ; Cn #   [2] <reserved-1F46>..<reserved-1F47>
+1F4E..1F4F    ; Cn #   [2] <reserved-1F4E>..<reserved-1F4F>
+1F58          ; Cn #       <reserved-1F58>
+1F5A          ; Cn #       <reserved-1F5A>
+1F5C          ; Cn #       <reserved-1F5C>
+1F5E          ; Cn #       <reserved-1F5E>
+1F7E..1F7F    ; Cn #   [2] <reserved-1F7E>..<reserved-1F7F>
+1FB5          ; Cn #       <reserved-1FB5>
+1FC5          ; Cn #       <reserved-1FC5>
+1FD4..1FD5    ; Cn #   [2] <reserved-1FD4>..<reserved-1FD5>
+1FDC          ; Cn #       <reserved-1FDC>
+1FF0..1FF1    ; Cn #   [2] <reserved-1FF0>..<reserved-1FF1>
+1FF5          ; Cn #       <reserved-1FF5>
+1FFF          ; Cn #       <reserved-1FFF>
+2065          ; Cn #       <reserved-2065>
+2072..2073    ; Cn #   [2] <reserved-2072>..<reserved-2073>
+208F          ; Cn #       <reserved-208F>
+209D..209F    ; Cn #   [3] <reserved-209D>..<reserved-209F>
+20C1..20CF    ; Cn #  [15] <reserved-20C1>..<reserved-20CF>
+20F1..20FF    ; Cn #  [15] <reserved-20F1>..<reserved-20FF>
+218C..218F    ; Cn #   [4] <reserved-218C>..<reserved-218F>
+2427..243F    ; Cn #  [25] <reserved-2427>..<reserved-243F>
+244B..245F    ; Cn #  [21] <reserved-244B>..<reserved-245F>
+2B74..2B75    ; Cn #   [2] <reserved-2B74>..<reserved-2B75>
+2B96          ; Cn #       <reserved-2B96>
+2CF4..2CF8    ; Cn #   [5] <reserved-2CF4>..<reserved-2CF8>
+2D26          ; Cn #       <reserved-2D26>
+2D28..2D2C    ; Cn #   [5] <reserved-2D28>..<reserved-2D2C>
+2D2E..2D2F    ; Cn #   [2] <reserved-2D2E>..<reserved-2D2F>
+2D68..2D6E    ; Cn #   [7] <reserved-2D68>..<reserved-2D6E>
+2D71..2D7E    ; Cn #  [14] <reserved-2D71>..<reserved-2D7E>
+2D97..2D9F    ; Cn #   [9] <reserved-2D97>..<reserved-2D9F>
+2DA7          ; Cn #       <reserved-2DA7>
+2DAF          ; Cn #       <reserved-2DAF>
+2DB7          ; Cn #       <reserved-2DB7>
+2DBF          ; Cn #       <reserved-2DBF>
+2DC7          ; Cn #       <reserved-2DC7>
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+16FF2..16FFF  ; Cn #  [14] <reserved-16FF2>..<reserved-16FFF>
+187F8..187FF  ; Cn #   [8] <reserved-187F8>..<reserved-187FF>
+18CD6..18CFF  ; Cn #  [42] <reserved-18CD6>..<reserved-18CFF>
+18D09..1AFEF  ; Cn # [8935] <reserved-18D09>..<reserved-1AFEF>
+1AFF4         ; Cn #       <reserved-1AFF4>
+1AFFC         ; Cn #       <reserved-1AFFC>
+1AFFF         ; Cn #       <reserved-1AFFF>
+1B123..1B131  ; Cn #  [15] <reserved-1B123>..<reserved-1B131>
+1B133..1B14F  ; Cn #  [29] <reserved-1B133>..<reserved-1B14F>
+1B153..1B154  ; Cn #   [2] <reserved-1B153>..<reserved-1B154>
+1B156..1B163  ; Cn #  [14] <reserved-1B156>..<reserved-1B163>
+1B168..1B16F  ; Cn #   [8] <reserved-1B168>..<reserved-1B16F>
+1B2FC..1BBFF  ; Cn # [2308] <reserved-1B2FC>..<reserved-1BBFF>
+1BC6B..1BC6F  ; Cn #   [5] <reserved-1BC6B>..<reserved-1BC6F>
+1BC7D..1BC7F  ; Cn #   [3] <reserved-1BC7D>..<reserved-1BC7F>
+1BC89..1BC8F  ; Cn #   [7] <reserved-1BC89>..<reserved-1BC8F>
+1BC9A..1BC9B  ; Cn #   [2] <reserved-1BC9A>..<reserved-1BC9B>
+1BCA4..1CEFF  ; Cn # [4700] <reserved-1BCA4>..<reserved-1CEFF>
+1CF2E..1CF2F  ; Cn #   [2] <reserved-1CF2E>..<reserved-1CF2F>
+1CF47..1CF4F  ; Cn #   [9] <reserved-1CF47>..<reserved-1CF4F>
+1CFC4..1CFFF  ; Cn #  [60] <reserved-1CFC4>..<reserved-1CFFF>
+1D0F6..1D0FF  ; Cn #  [10] <reserved-1D0F6>..<reserved-1D0FF>
+1D127..1D128  ; Cn #   [2] <reserved-1D127>..<reserved-1D128>
+1D1EB..1D1FF  ; Cn #  [21] <reserved-1D1EB>..<reserved-1D1FF>
+1D246..1D2BF  ; Cn # [122] <reserved-1D246>..<reserved-1D2BF>
+1D2D4..1D2DF  ; Cn #  [12] <reserved-1D2D4>..<reserved-1D2DF>
+1D2F4..1D2FF  ; Cn #  [12] <reserved-1D2F4>..<reserved-1D2FF>
+1D357..1D35F  ; Cn #   [9] <reserved-1D357>..<reserved-1D35F>
+1D379..1D3FF  ; Cn # [135] <reserved-1D379>..<reserved-1D3FF>
+1D455         ; Cn #       <reserved-1D455>
+1D49D         ; Cn #       <reserved-1D49D>
+1D4A0..1D4A1  ; Cn #   [2] <reserved-1D4A0>..<reserved-1D4A1>
+1D4A3..1D4A4  ; Cn #   [2] <reserved-1D4A3>..<reserved-1D4A4>
+1D4A7..1D4A8  ; Cn #   [2] <reserved-1D4A7>..<reserved-1D4A8>
+1D4AD         ; Cn #       <reserved-1D4AD>
+1D4BA         ; Cn #       <reserved-1D4BA>
+1D4BC         ; Cn #       <reserved-1D4BC>
+1D4C4         ; Cn #       <reserved-1D4C4>
+1D506         ; Cn #       <reserved-1D506>
+1D50B..1D50C  ; Cn #   [2] <reserved-1D50B>..<reserved-1D50C>
+1D515         ; Cn #       <reserved-1D515>
+1D51D         ; Cn #       <reserved-1D51D>
+1D53A         ; Cn #       <reserved-1D53A>
+1D53F         ; Cn #       <reserved-1D53F>
+1D545         ; Cn #       <reserved-1D545>
+1D547..1D549  ; Cn #   [3] <reserved-1D547>..<reserved-1D549>
+1D551         ; Cn #       <reserved-1D551>
+1D6A6..1D6A7  ; Cn #   [2] <reserved-1D6A6>..<reserved-1D6A7>
+1D7CC..1D7CD  ; Cn #   [2] <reserved-1D7CC>..<reserved-1D7CD>
+1DA8C..1DA9A  ; Cn #  [15] <reserved-1DA8C>..<reserved-1DA9A>
+1DAA0         ; Cn #       <reserved-1DAA0>
+1DAB0..1DEFF  ; Cn # [1104] <reserved-1DAB0>..<reserved-1DEFF>
+1DF1F..1DF24  ; Cn #   [6] <reserved-1DF1F>..<reserved-1DF24>
+1DF2B..1DFFF  ; Cn # [213] <reserved-1DF2B>..<reserved-1DFFF>
+1E007         ; Cn #       <reserved-1E007>
+1E019..1E01A  ; Cn #   [2] <reserved-1E019>..<reserved-1E01A>
+1E022         ; Cn #       <reserved-1E022>
+1E025         ; Cn #       <reserved-1E025>
+1E02B..1E02F  ; Cn #   [5] <reserved-1E02B>..<reserved-1E02F>
+1E06E..1E08E  ; Cn #  [33] <reserved-1E06E>..<reserved-1E08E>
+1E090..1E0FF  ; Cn # [112] <reserved-1E090>..<reserved-1E0FF>
+1E12D..1E12F  ; Cn #   [3] <reserved-1E12D>..<reserved-1E12F>
+1E13E..1E13F  ; Cn #   [2] <reserved-1E13E>..<reserved-1E13F>
+1E14A..1E14D  ; Cn #   [4] <reserved-1E14A>..<reserved-1E14D>
+1E150..1E28F  ; Cn # [320] <reserved-1E150>..<reserved-1E28F>
+1E2AF..1E2BF  ; Cn #  [17] <reserved-1E2AF>..<reserved-1E2BF>
+1E2FA..1E2FE  ; Cn #   [5] <reserved-1E2FA>..<reserved-1E2FE>
+1E300..1E4CF  ; Cn # [464] <reserved-1E300>..<reserved-1E4CF>
+1E4FA..1E7DF  ; Cn # [742] <reserved-1E4FA>..<reserved-1E7DF>
+1E7E7         ; Cn #       <reserved-1E7E7>
+1E7EC         ; Cn #       <reserved-1E7EC>
+1E7EF         ; Cn #       <reserved-1E7EF>
+1E7FF         ; Cn #       <reserved-1E7FF>
+1E8C5..1E8C6  ; Cn #   [2] <reserved-1E8C5>..<reserved-1E8C6>
+1E8D7..1E8FF  ; Cn #  [41] <reserved-1E8D7>..<reserved-1E8FF>
+1E94C..1E94F  ; Cn #   [4] <reserved-1E94C>..<reserved-1E94F>
+1E95A..1E95D  ; Cn #   [4] <reserved-1E95A>..<reserved-1E95D>
+1E960..1EC70  ; Cn # [785] <reserved-1E960>..<reserved-1EC70>
+1ECB5..1ED00  ; Cn #  [76] <reserved-1ECB5>..<reserved-1ED00>
+1ED3E..1EDFF  ; Cn # [194] <reserved-1ED3E>..<reserved-1EDFF>
+1EE04         ; Cn #       <reserved-1EE04>
+1EE20         ; Cn #       <reserved-1EE20>
+1EE23         ; Cn #       <reserved-1EE23>
+1EE25..1EE26  ; Cn #   [2] <reserved-1EE25>..<reserved-1EE26>
+1EE28         ; Cn #       <reserved-1EE28>
+1EE33         ; Cn #       <reserved-1EE33>
+1EE38         ; Cn #       <reserved-1EE38>
+1EE3A         ; Cn #       <reserved-1EE3A>
+1EE3C..1EE41  ; Cn #   [6] <reserved-1EE3C>..<reserved-1EE41>
+1EE43..1EE46  ; Cn #   [4] <reserved-1EE43>..<reserved-1EE46>
+1EE48         ; Cn #       <reserved-1EE48>
+1EE4A         ; Cn #       <reserved-1EE4A>
+1EE4C         ; Cn #       <reserved-1EE4C>
+1EE50         ; Cn #       <reserved-1EE50>
+1EE53         ; Cn #       <reserved-1EE53>
+1EE55..1EE56  ; Cn #   [2] <reserved-1EE55>..<reserved-1EE56>
+1EE58         ; Cn #       <reserved-1EE58>
+1EE5A         ; Cn #       <reserved-1EE5A>
+1EE5C         ; Cn #       <reserved-1EE5C>
+1EE5E         ; Cn #       <reserved-1EE5E>
+1EE60         ; Cn #       <reserved-1EE60>
+1EE63         ; Cn #       <reserved-1EE63>
+1EE65..1EE66  ; Cn #   [2] <reserved-1EE65>..<reserved-1EE66>
+1EE6B         ; Cn #       <reserved-1EE6B>
+1EE73         ; Cn #       <reserved-1EE73>
+1EE78         ; Cn #       <reserved-1EE78>
+1EE7D         ; Cn #       <reserved-1EE7D>
+1EE7F         ; Cn #       <reserved-1EE7F>
+1EE8A         ; Cn #       <reserved-1EE8A>
+1EE9C..1EEA0  ; Cn #   [5] <reserved-1EE9C>..<reserved-1EEA0>
+1EEA4         ; Cn #       <reserved-1EEA4>
+1EEAA         ; Cn #       <reserved-1EEAA>
+1EEBC..1EEEF  ; Cn #  [52] <reserved-1EEBC>..<reserved-1EEEF>
+1EEF2..1EFFF  ; Cn # [270] <reserved-1EEF2>..<reserved-1EFFF>
+1F02C..1F02F  ; Cn #   [4] <reserved-1F02C>..<reserved-1F02F>
+1F094..1F09F  ; Cn #  [12] <reserved-1F094>..<reserved-1F09F>
+1F0AF..1F0B0  ; Cn #   [2] <reserved-1F0AF>..<reserved-1F0B0>
+1F0C0         ; Cn #       <reserved-1F0C0>
+1F0D0         ; Cn #       <reserved-1F0D0>
+1F0F6..1F0FF  ; Cn #  [10] <reserved-1F0F6>..<reserved-1F0FF>
+1F1AE..1F1E5  ; Cn #  [56] <reserved-1F1AE>..<reserved-1F1E5>
+1F203..1F20F  ; Cn #  [13] <reserved-1F203>..<reserved-1F20F>
+1F23C..1F23F  ; Cn #   [4] <reserved-1F23C>..<reserved-1F23F>
+1F249..1F24F  ; Cn #   [7] <reserved-1F249>..<reserved-1F24F>
+1F252..1F25F  ; Cn #  [14] <reserved-1F252>..<reserved-1F25F>
+1F266..1F2FF  ; Cn # [154] <reserved-1F266>..<reserved-1F2FF>
+1F6D8..1F6DB  ; Cn #   [4] <reserved-1F6D8>..<reserved-1F6DB>
+1F6ED..1F6EF  ; Cn #   [3] <reserved-1F6ED>..<reserved-1F6EF>
+1F6FD..1F6FF  ; Cn #   [3] <reserved-1F6FD>..<reserved-1F6FF>
+1F777..1F77A  ; Cn #   [4] <reserved-1F777>..<reserved-1F77A>
+1F7DA..1F7DF  ; Cn #   [6] <reserved-1F7DA>..<reserved-1F7DF>
+1F7EC..1F7EF  ; Cn #   [4] <reserved-1F7EC>..<reserved-1F7EF>
+1F7F1..1F7FF  ; Cn #  [15] <reserved-1F7F1>..<reserved-1F7FF>
+1F80C..1F80F  ; Cn #   [4] <reserved-1F80C>..<reserved-1F80F>
+1F848..1F84F  ; Cn #   [8] <reserved-1F848>..<reserved-1F84F>
+1F85A..1F85F  ; Cn #   [6] <reserved-1F85A>..<reserved-1F85F>
+1F888..1F88F  ; Cn #   [8] <reserved-1F888>..<reserved-1F88F>
+1F8AE..1F8AF  ; Cn #   [2] <reserved-1F8AE>..<reserved-1F8AF>
+1F8B2..1F8FF  ; Cn #  [78] <reserved-1F8B2>..<reserved-1F8FF>
+1FA54..1FA5F  ; Cn #  [12] <reserved-1FA54>..<reserved-1FA5F>
+1FA6E..1FA6F  ; Cn #   [2] <reserved-1FA6E>..<reserved-1FA6F>
+1FA7D..1FA7F  ; Cn #   [3] <reserved-1FA7D>..<reserved-1FA7F>
+1FA89..1FA8F  ; Cn #   [7] <reserved-1FA89>..<reserved-1FA8F>
+1FABE         ; Cn #       <reserved-1FABE>
+1FAC6..1FACD  ; Cn #   [8] <reserved-1FAC6>..<reserved-1FACD>
+1FADC..1FADF  ; Cn #   [4] <reserved-1FADC>..<reserved-1FADF>
+1FAE9..1FAEF  ; Cn #   [7] <reserved-1FAE9>..<reserved-1FAEF>
+1FAF9..1FAFF  ; Cn #   [7] <reserved-1FAF9>..<reserved-1FAFF>
+1FB93         ; Cn #       <reserved-1FB93>
+1FBCB..1FBEF  ; Cn #  [37] <reserved-1FBCB>..<reserved-1FBEF>
+1FBFA..1FFFF  ; Cn # [1030] <reserved-1FBFA>..<noncharacter-1FFFF>
+2A6E0..2A6FF  ; Cn #  [32] <reserved-2A6E0>..<reserved-2A6FF>
+2B73A..2B73F  ; Cn #   [6] <reserved-2B73A>..<reserved-2B73F>
+2B81E..2B81F  ; Cn #   [2] <reserved-2B81E>..<reserved-2B81F>
+2CEA2..2CEAF  ; Cn #  [14] <reserved-2CEA2>..<reserved-2CEAF>
+2EBE1..2F7FF  ; Cn # [3103] <reserved-2EBE1>..<reserved-2F7FF>
+2FA1E..2FFFF  ; Cn # [1506] <reserved-2FA1E>..<noncharacter-2FFFF>
+3134B..3134F  ; Cn #   [5] <reserved-3134B>..<reserved-3134F>
+323B0..E0000  ; Cn # [711761] <reserved-323B0>..<reserved-E0000>
+E0002..E001F  ; Cn #  [30] <reserved-E0002>..<reserved-E001F>
+E0080..E00FF  ; Cn # [128] <reserved-E0080>..<reserved-E00FF>
+E01F0..EFFFF  ; Cn # [65040] <reserved-E01F0>..<noncharacter-EFFFF>
+FFFFE..FFFFF  ; Cn #   [2] <noncharacter-FFFFE>..<noncharacter-FFFFF>
+10FFFE..10FFFF; Cn #   [2] <noncharacter-10FFFE>..<noncharacter-10FFFF>
+
+# Total code points: 825345
+
+# ================================================
+
+# General_Category=Uppercase_Letter
+
+0041..005A    ; Lu #  [26] LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+00C0..00D6    ; Lu #  [23] LATIN CAPITAL LETTER A WITH GRAVE..LATIN CAPITAL LETTER O WITH DIAERESIS
+00D8..00DE    ; Lu #   [7] LATIN CAPITAL LETTER O WITH STROKE..LATIN CAPITAL LETTER THORN
+0100          ; Lu #       LATIN CAPITAL LETTER A WITH MACRON
+0102          ; Lu #       LATIN CAPITAL LETTER A WITH BREVE
+0104          ; Lu #       LATIN CAPITAL LETTER A WITH OGONEK
+0106          ; Lu #       LATIN CAPITAL LETTER C WITH ACUTE
+0108          ; Lu #       LATIN CAPITAL LETTER C WITH CIRCUMFLEX
+010A          ; Lu #       LATIN CAPITAL LETTER C WITH DOT ABOVE
+010C          ; Lu #       LATIN CAPITAL LETTER C WITH CARON
+010E          ; Lu #       LATIN CAPITAL LETTER D WITH CARON
+0110          ; Lu #       LATIN CAPITAL LETTER D WITH STROKE
+0112          ; Lu #       LATIN CAPITAL LETTER E WITH MACRON
+0114          ; Lu #       LATIN CAPITAL LETTER E WITH BREVE
+0116          ; Lu #       LATIN CAPITAL LETTER E WITH DOT ABOVE
+0118          ; Lu #       LATIN CAPITAL LETTER E WITH OGONEK
+011A          ; Lu #       LATIN CAPITAL LETTER E WITH CARON
+011C          ; Lu #       LATIN CAPITAL LETTER G WITH CIRCUMFLEX
+011E          ; Lu #       LATIN CAPITAL LETTER G WITH BREVE
+0120          ; Lu #       LATIN CAPITAL LETTER G WITH DOT ABOVE
+0122          ; Lu #       LATIN CAPITAL LETTER G WITH CEDILLA
+0124          ; Lu #       LATIN CAPITAL LETTER H WITH CIRCUMFLEX
+0126          ; Lu #       LATIN CAPITAL LETTER H WITH STROKE
+0128          ; Lu #       LATIN CAPITAL LETTER I WITH TILDE
+012A          ; Lu #       LATIN CAPITAL LETTER I WITH MACRON
+012C          ; Lu #       LATIN CAPITAL LETTER I WITH BREVE
+012E          ; Lu #       LATIN CAPITAL LETTER I WITH OGONEK
+0130          ; Lu #       LATIN CAPITAL LETTER I WITH DOT ABOVE
+0132          ; Lu #       LATIN CAPITAL LIGATURE IJ
+0134          ; Lu #       LATIN CAPITAL LETTER J WITH CIRCUMFLEX
+0136          ; Lu #       LATIN CAPITAL LETTER K WITH CEDILLA
+0139          ; Lu #       LATIN CAPITAL LETTER L WITH ACUTE
+013B          ; Lu #       LATIN CAPITAL LETTER L WITH CEDILLA
+013D          ; Lu #       LATIN CAPITAL LETTER L WITH CARON
+013F          ; Lu #       LATIN CAPITAL LETTER L WITH MIDDLE DOT
+0141          ; Lu #       LATIN CAPITAL LETTER L WITH STROKE
+0143          ; Lu #       LATIN CAPITAL LETTER N WITH ACUTE
+0145          ; Lu #       LATIN CAPITAL LETTER N WITH CEDILLA
+0147          ; Lu #       LATIN CAPITAL LETTER N WITH CARON
+014A          ; Lu #       LATIN CAPITAL LETTER ENG
+014C          ; Lu #       LATIN CAPITAL LETTER O WITH MACRON
+014E          ; Lu #       LATIN CAPITAL LETTER O WITH BREVE
+0150          ; Lu #       LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
+0152          ; Lu #       LATIN CAPITAL LIGATURE OE
+0154          ; Lu #       LATIN CAPITAL LETTER R WITH ACUTE
+0156          ; Lu #       LATIN CAPITAL LETTER R WITH CEDILLA
+0158          ; Lu #       LATIN CAPITAL LETTER R WITH CARON
+015A          ; Lu #       LATIN CAPITAL LETTER S WITH ACUTE
+015C          ; Lu #       LATIN CAPITAL LETTER S WITH CIRCUMFLEX
+015E          ; Lu #       LATIN CAPITAL LETTER S WITH CEDILLA
+0160          ; Lu #       LATIN CAPITAL LETTER S WITH CARON
+0162          ; Lu #       LATIN CAPITAL LETTER T WITH CEDILLA
+0164          ; Lu #       LATIN CAPITAL LETTER T WITH CARON
+0166          ; Lu #       LATIN CAPITAL LETTER T WITH STROKE
+0168          ; Lu #       LATIN CAPITAL LETTER U WITH TILDE
+016A          ; Lu #       LATIN CAPITAL LETTER U WITH MACRON
+016C          ; Lu #       LATIN CAPITAL LETTER U WITH BREVE
+016E          ; Lu #       LATIN CAPITAL LETTER U WITH RING ABOVE
+0170          ; Lu #       LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
+0172          ; Lu #       LATIN CAPITAL LETTER U WITH OGONEK
+0174          ; Lu #       LATIN CAPITAL LETTER W WITH CIRCUMFLEX
+0176          ; Lu #       LATIN CAPITAL LETTER Y WITH CIRCUMFLEX
+0178..0179    ; Lu #   [2] LATIN CAPITAL LETTER Y WITH DIAERESIS..LATIN CAPITAL LETTER Z WITH ACUTE
+017B          ; Lu #       LATIN CAPITAL LETTER Z WITH DOT ABOVE
+017D          ; Lu #       LATIN CAPITAL LETTER Z WITH CARON
+0181..0182    ; Lu #   [2] LATIN CAPITAL LETTER B WITH HOOK..LATIN CAPITAL LETTER B WITH TOPBAR
+0184          ; Lu #       LATIN CAPITAL LETTER TONE SIX
+0186..0187    ; Lu #   [2] LATIN CAPITAL LETTER OPEN O..LATIN CAPITAL LETTER C WITH HOOK
+0189..018B    ; Lu #   [3] LATIN CAPITAL LETTER AFRICAN D..LATIN CAPITAL LETTER D WITH TOPBAR
+018E..0191    ; Lu #   [4] LATIN CAPITAL LETTER REVERSED E..LATIN CAPITAL LETTER F WITH HOOK
+0193..0194    ; Lu #   [2] LATIN CAPITAL LETTER G WITH HOOK..LATIN CAPITAL LETTER GAMMA
+0196..0198    ; Lu #   [3] LATIN CAPITAL LETTER IOTA..LATIN CAPITAL LETTER K WITH HOOK
+019C..019D    ; Lu #   [2] LATIN CAPITAL LETTER TURNED M..LATIN CAPITAL LETTER N WITH LEFT HOOK
+019F..01A0    ; Lu #   [2] LATIN CAPITAL LETTER O WITH MIDDLE TILDE..LATIN CAPITAL LETTER O WITH HORN
+01A2          ; Lu #       LATIN CAPITAL LETTER OI
+01A4          ; Lu #       LATIN CAPITAL LETTER P WITH HOOK
+01A6..01A7    ; Lu #   [2] LATIN LETTER YR..LATIN CAPITAL LETTER TONE TWO
+01A9          ; Lu #       LATIN CAPITAL LETTER ESH
+01AC          ; Lu #       LATIN CAPITAL LETTER T WITH HOOK
+01AE..01AF    ; Lu #   [2] LATIN CAPITAL LETTER T WITH RETROFLEX HOOK..LATIN CAPITAL LETTER U WITH HORN
+01B1..01B3    ; Lu #   [3] LATIN CAPITAL LETTER UPSILON..LATIN CAPITAL LETTER Y WITH HOOK
+01B5          ; Lu #       LATIN CAPITAL LETTER Z WITH STROKE
+01B7..01B8    ; Lu #   [2] LATIN CAPITAL LETTER EZH..LATIN CAPITAL LETTER EZH REVERSED
+01BC          ; Lu #       LATIN CAPITAL LETTER TONE FIVE
+01C4          ; Lu #       LATIN CAPITAL LETTER DZ WITH CARON
+01C7          ; Lu #       LATIN CAPITAL LETTER LJ
+01CA          ; Lu #       LATIN CAPITAL LETTER NJ
+01CD          ; Lu #       LATIN CAPITAL LETTER A WITH CARON
+01CF          ; Lu #       LATIN CAPITAL LETTER I WITH CARON
+01D1          ; Lu #       LATIN CAPITAL LETTER O WITH CARON
+01D3          ; Lu #       LATIN CAPITAL LETTER U WITH CARON
+01D5          ; Lu #       LATIN CAPITAL LETTER U WITH DIAERESIS AND MACRON
+01D7          ; Lu #       LATIN CAPITAL LETTER U WITH DIAERESIS AND ACUTE
+01D9          ; Lu #       LATIN CAPITAL LETTER U WITH DIAERESIS AND CARON
+01DB          ; Lu #       LATIN CAPITAL LETTER U WITH DIAERESIS AND GRAVE
+01DE          ; Lu #       LATIN CAPITAL LETTER A WITH DIAERESIS AND MACRON
+01E0          ; Lu #       LATIN CAPITAL LETTER A WITH DOT ABOVE AND MACRON
+01E2          ; Lu #       LATIN CAPITAL LETTER AE WITH MACRON
+01E4          ; Lu #       LATIN CAPITAL LETTER G WITH STROKE
+01E6          ; Lu #       LATIN CAPITAL LETTER G WITH CARON
+01E8          ; Lu #       LATIN CAPITAL LETTER K WITH CARON
+01EA          ; Lu #       LATIN CAPITAL LETTER O WITH OGONEK
+01EC          ; Lu #       LATIN CAPITAL LETTER O WITH OGONEK AND MACRON
+01EE          ; Lu #       LATIN CAPITAL LETTER EZH WITH CARON
+01F1          ; Lu #       LATIN CAPITAL LETTER DZ
+01F4          ; Lu #       LATIN CAPITAL LETTER G WITH ACUTE
+01F6..01F8    ; Lu #   [3] LATIN CAPITAL LETTER HWAIR..LATIN CAPITAL LETTER N WITH GRAVE
+01FA          ; Lu #       LATIN CAPITAL LETTER A WITH RING ABOVE AND ACUTE
+01FC          ; Lu #       LATIN CAPITAL LETTER AE WITH ACUTE
+01FE          ; Lu #       LATIN CAPITAL LETTER O WITH STROKE AND ACUTE
+0200          ; Lu #       LATIN CAPITAL LETTER A WITH DOUBLE GRAVE
+0202          ; Lu #       LATIN CAPITAL LETTER A WITH INVERTED BREVE
+0204          ; Lu #       LATIN CAPITAL LETTER E WITH DOUBLE GRAVE
+0206          ; Lu #       LATIN CAPITAL LETTER E WITH INVERTED BREVE
+0208          ; Lu #       LATIN CAPITAL LETTER I WITH DOUBLE GRAVE
+020A          ; Lu #       LATIN CAPITAL LETTER I WITH INVERTED BREVE
+020C          ; Lu #       LATIN CAPITAL LETTER O WITH DOUBLE GRAVE
+020E          ; Lu #       LATIN CAPITAL LETTER O WITH INVERTED BREVE
+0210          ; Lu #       LATIN CAPITAL LETTER R WITH DOUBLE GRAVE
+0212          ; Lu #       LATIN CAPITAL LETTER R WITH INVERTED BREVE
+0214          ; Lu #       LATIN CAPITAL LETTER U WITH DOUBLE GRAVE
+0216          ; Lu #       LATIN CAPITAL LETTER U WITH INVERTED BREVE
+0218          ; Lu #       LATIN CAPITAL LETTER S WITH COMMA BELOW
+021A          ; Lu #       LATIN CAPITAL LETTER T WITH COMMA BELOW
+021C          ; Lu #       LATIN CAPITAL LETTER YOGH
+021E          ; Lu #       LATIN CAPITAL LETTER H WITH CARON
+0220          ; Lu #       LATIN CAPITAL LETTER N WITH LONG RIGHT LEG
+0222          ; Lu #       LATIN CAPITAL LETTER OU
+0224          ; Lu #       LATIN CAPITAL LETTER Z WITH HOOK
+0226          ; Lu #       LATIN CAPITAL LETTER A WITH DOT ABOVE
+0228          ; Lu #       LATIN CAPITAL LETTER E WITH CEDILLA
+022A          ; Lu #       LATIN CAPITAL LETTER O WITH DIAERESIS AND MACRON
+022C          ; Lu #       LATIN CAPITAL LETTER O WITH TILDE AND MACRON
+022E          ; Lu #       LATIN CAPITAL LETTER O WITH DOT ABOVE
+0230          ; Lu #       LATIN CAPITAL LETTER O WITH DOT ABOVE AND MACRON
+0232          ; Lu #       LATIN CAPITAL LETTER Y WITH MACRON
+023A..023B    ; Lu #   [2] LATIN CAPITAL LETTER A WITH STROKE..LATIN CAPITAL LETTER C WITH STROKE
+023D..023E    ; Lu #   [2] LATIN CAPITAL LETTER L WITH BAR..LATIN CAPITAL LETTER T WITH DIAGONAL STROKE
+0241          ; Lu #       LATIN CAPITAL LETTER GLOTTAL STOP
+0243..0246    ; Lu #   [4] LATIN CAPITAL LETTER B WITH STROKE..LATIN CAPITAL LETTER E WITH STROKE
+0248          ; Lu #       LATIN CAPITAL LETTER J WITH STROKE
+024A          ; Lu #       LATIN CAPITAL LETTER SMALL Q WITH HOOK TAIL
+024C          ; Lu #       LATIN CAPITAL LETTER R WITH STROKE
+024E          ; Lu #       LATIN CAPITAL LETTER Y WITH STROKE
+0370          ; Lu #       GREEK CAPITAL LETTER HETA
+0372          ; Lu #       GREEK CAPITAL LETTER ARCHAIC SAMPI
+0376          ; Lu #       GREEK CAPITAL LETTER PAMPHYLIAN DIGAMMA
+037F          ; Lu #       GREEK CAPITAL LETTER YOT
+0386          ; Lu #       GREEK CAPITAL LETTER ALPHA WITH TONOS
+0388..038A    ; Lu #   [3] GREEK CAPITAL LETTER EPSILON WITH TONOS..GREEK CAPITAL LETTER IOTA WITH TONOS
+038C          ; Lu #       GREEK CAPITAL LETTER OMICRON WITH TONOS
+038E..038F    ; Lu #   [2] GREEK CAPITAL LETTER UPSILON WITH TONOS..GREEK CAPITAL LETTER OMEGA WITH TONOS
+0391..03A1    ; Lu #  [17] GREEK CAPITAL LETTER ALPHA..GREEK CAPITAL LETTER RHO
+03A3..03AB    ; Lu #   [9] GREEK CAPITAL LETTER SIGMA..GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA
+03CF          ; Lu #       GREEK CAPITAL KAI SYMBOL
+03D2..03D4    ; Lu #   [3] GREEK UPSILON WITH HOOK SYMBOL..GREEK UPSILON WITH DIAERESIS AND HOOK SYMBOL
+03D8          ; Lu #       GREEK LETTER ARCHAIC KOPPA
+03DA          ; Lu #       GREEK LETTER STIGMA
+03DC          ; Lu #       GREEK LETTER DIGAMMA
+03DE          ; Lu #       GREEK LETTER KOPPA
+03E0          ; Lu #       GREEK LETTER SAMPI
+03E2          ; Lu #       COPTIC CAPITAL LETTER SHEI
+03E4          ; Lu #       COPTIC CAPITAL LETTER FEI
+03E6          ; Lu #       COPTIC CAPITAL LETTER KHEI
+03E8          ; Lu #       COPTIC CAPITAL LETTER HORI
+03EA          ; Lu #       COPTIC CAPITAL LETTER GANGIA
+03EC          ; Lu #       COPTIC CAPITAL LETTER SHIMA
+03EE          ; Lu #       COPTIC CAPITAL LETTER DEI
+03F4          ; Lu #       GREEK CAPITAL THETA SYMBOL
+03F7          ; Lu #       GREEK CAPITAL LETTER SHO
+03F9..03FA    ; Lu #   [2] GREEK CAPITAL LUNATE SIGMA SYMBOL..GREEK CAPITAL LETTER SAN
+03FD..042F    ; Lu #  [51] GREEK CAPITAL REVERSED LUNATE SIGMA SYMBOL..CYRILLIC CAPITAL LETTER YA
+0460          ; Lu #       CYRILLIC CAPITAL LETTER OMEGA
+0462          ; Lu #       CYRILLIC CAPITAL LETTER YAT
+0464          ; Lu #       CYRILLIC CAPITAL LETTER IOTIFIED E
+0466          ; Lu #       CYRILLIC CAPITAL LETTER LITTLE YUS
+0468          ; Lu #       CYRILLIC CAPITAL LETTER IOTIFIED LITTLE YUS
+046A          ; Lu #       CYRILLIC CAPITAL LETTER BIG YUS
+046C          ; Lu #       CYRILLIC CAPITAL LETTER IOTIFIED BIG YUS
+046E          ; Lu #       CYRILLIC CAPITAL LETTER KSI
+0470          ; Lu #       CYRILLIC CAPITAL LETTER PSI
+0472          ; Lu #       CYRILLIC CAPITAL LETTER FITA
+0474          ; Lu #       CYRILLIC CAPITAL LETTER IZHITSA
+0476          ; Lu #       CYRILLIC CAPITAL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0478          ; Lu #       CYRILLIC CAPITAL LETTER UK
+047A          ; Lu #       CYRILLIC CAPITAL LETTER ROUND OMEGA
+047C          ; Lu #       CYRILLIC CAPITAL LETTER OMEGA WITH TITLO
+047E          ; Lu #       CYRILLIC CAPITAL LETTER OT
+0480          ; Lu #       CYRILLIC CAPITAL LETTER KOPPA
+048A          ; Lu #       CYRILLIC CAPITAL LETTER SHORT I WITH TAIL
+048C          ; Lu #       CYRILLIC CAPITAL LETTER SEMISOFT SIGN
+048E          ; Lu #       CYRILLIC CAPITAL LETTER ER WITH TICK
+0490          ; Lu #       CYRILLIC CAPITAL LETTER GHE WITH UPTURN
+0492          ; Lu #       CYRILLIC CAPITAL LETTER GHE WITH STROKE
+0494          ; Lu #       CYRILLIC CAPITAL LETTER GHE WITH MIDDLE HOOK
+0496          ; Lu #       CYRILLIC CAPITAL LETTER ZHE WITH DESCENDER
+0498          ; Lu #       CYRILLIC CAPITAL LETTER ZE WITH DESCENDER
+049A          ; Lu #       CYRILLIC CAPITAL LETTER KA WITH DESCENDER
+049C          ; Lu #       CYRILLIC CAPITAL LETTER KA WITH VERTICAL STROKE
+049E          ; Lu #       CYRILLIC CAPITAL LETTER KA WITH STROKE
+04A0          ; Lu #       CYRILLIC CAPITAL LETTER BASHKIR KA
+04A2          ; Lu #       CYRILLIC CAPITAL LETTER EN WITH DESCENDER
+04A4          ; Lu #       CYRILLIC CAPITAL LIGATURE EN GHE
+04A6          ; Lu #       CYRILLIC CAPITAL LETTER PE WITH MIDDLE HOOK
+04A8          ; Lu #       CYRILLIC CAPITAL LETTER ABKHASIAN HA
+04AA          ; Lu #       CYRILLIC CAPITAL LETTER ES WITH DESCENDER
+04AC          ; Lu #       CYRILLIC CAPITAL LETTER TE WITH DESCENDER
+04AE          ; Lu #       CYRILLIC CAPITAL LETTER STRAIGHT U
+04B0          ; Lu #       CYRILLIC CAPITAL LETTER STRAIGHT U WITH STROKE
+04B2          ; Lu #       CYRILLIC CAPITAL LETTER HA WITH DESCENDER
+04B4          ; Lu #       CYRILLIC CAPITAL LIGATURE TE TSE
+04B6          ; Lu #       CYRILLIC CAPITAL LETTER CHE WITH DESCENDER
+04B8          ; Lu #       CYRILLIC CAPITAL LETTER CHE WITH VERTICAL STROKE
+04BA          ; Lu #       CYRILLIC CAPITAL LETTER SHHA
+04BC          ; Lu #       CYRILLIC CAPITAL LETTER ABKHASIAN CHE
+04BE          ; Lu #       CYRILLIC CAPITAL LETTER ABKHASIAN CHE WITH DESCENDER
+04C0..04C1    ; Lu #   [2] CYRILLIC LETTER PALOCHKA..CYRILLIC CAPITAL LETTER ZHE WITH BREVE
+04C3          ; Lu #       CYRILLIC CAPITAL LETTER KA WITH HOOK
+04C5          ; Lu #       CYRILLIC CAPITAL LETTER EL WITH TAIL
+04C7          ; Lu #       CYRILLIC CAPITAL LETTER EN WITH HOOK
+04C9          ; Lu #       CYRILLIC CAPITAL LETTER EN WITH TAIL
+04CB          ; Lu #       CYRILLIC CAPITAL LETTER KHAKASSIAN CHE
+04CD          ; Lu #       CYRILLIC CAPITAL LETTER EM WITH TAIL
+04D0          ; Lu #       CYRILLIC CAPITAL LETTER A WITH BREVE
+04D2          ; Lu #       CYRILLIC CAPITAL LETTER A WITH DIAERESIS
+04D4          ; Lu #       CYRILLIC CAPITAL LIGATURE A IE
+04D6          ; Lu #       CYRILLIC CAPITAL LETTER IE WITH BREVE
+04D8          ; Lu #       CYRILLIC CAPITAL LETTER SCHWA
+04DA          ; Lu #       CYRILLIC CAPITAL LETTER SCHWA WITH DIAERESIS
+04DC          ; Lu #       CYRILLIC CAPITAL LETTER ZHE WITH DIAERESIS
+04DE          ; Lu #       CYRILLIC CAPITAL LETTER ZE WITH DIAERESIS
+04E0          ; Lu #       CYRILLIC CAPITAL LETTER ABKHASIAN DZE
+04E2          ; Lu #       CYRILLIC CAPITAL LETTER I WITH MACRON
+04E4          ; Lu #       CYRILLIC CAPITAL LETTER I WITH DIAERESIS
+04E6          ; Lu #       CYRILLIC CAPITAL LETTER O WITH DIAERESIS
+04E8          ; Lu #       CYRILLIC CAPITAL LETTER BARRED O
+04EA          ; Lu #       CYRILLIC CAPITAL LETTER BARRED O WITH DIAERESIS
+04EC          ; Lu #       CYRILLIC CAPITAL LETTER E WITH DIAERESIS
+04EE          ; Lu #       CYRILLIC CAPITAL LETTER U WITH MACRON
+04F0          ; Lu #       CYRILLIC CAPITAL LETTER U WITH DIAERESIS
+04F2          ; Lu #       CYRILLIC CAPITAL LETTER U WITH DOUBLE ACUTE
+04F4          ; Lu #       CYRILLIC CAPITAL LETTER CHE WITH DIAERESIS
+04F6          ; Lu #       CYRILLIC CAPITAL LETTER GHE WITH DESCENDER
+04F8          ; Lu #       CYRILLIC CAPITAL LETTER YERU WITH DIAERESIS
+04FA          ; Lu #       CYRILLIC CAPITAL LETTER GHE WITH STROKE AND HOOK
+04FC          ; Lu #       CYRILLIC CAPITAL LETTER HA WITH HOOK
+04FE          ; Lu #       CYRILLIC CAPITAL LETTER HA WITH STROKE
+0500          ; Lu #       CYRILLIC CAPITAL LETTER KOMI DE
+0502          ; Lu #       CYRILLIC CAPITAL LETTER KOMI DJE
+0504          ; Lu #       CYRILLIC CAPITAL LETTER KOMI ZJE
+0506          ; Lu #       CYRILLIC CAPITAL LETTER KOMI DZJE
+0508          ; Lu #       CYRILLIC CAPITAL LETTER KOMI LJE
+050A          ; Lu #       CYRILLIC CAPITAL LETTER KOMI NJE
+050C          ; Lu #       CYRILLIC CAPITAL LETTER KOMI SJE
+050E          ; Lu #       CYRILLIC CAPITAL LETTER KOMI TJE
+0510          ; Lu #       CYRILLIC CAPITAL LETTER REVERSED ZE
+0512          ; Lu #       CYRILLIC CAPITAL LETTER EL WITH HOOK
+0514          ; Lu #       CYRILLIC CAPITAL LETTER LHA
+0516          ; Lu #       CYRILLIC CAPITAL LETTER RHA
+0518          ; Lu #       CYRILLIC CAPITAL LETTER YAE
+051A          ; Lu #       CYRILLIC CAPITAL LETTER QA
+051C          ; Lu #       CYRILLIC CAPITAL LETTER WE
+051E          ; Lu #       CYRILLIC CAPITAL LETTER ALEUT KA
+0520          ; Lu #       CYRILLIC CAPITAL LETTER EL WITH MIDDLE HOOK
+0522          ; Lu #       CYRILLIC CAPITAL LETTER EN WITH MIDDLE HOOK
+0524          ; Lu #       CYRILLIC CAPITAL LETTER PE WITH DESCENDER
+0526          ; Lu #       CYRILLIC CAPITAL LETTER SHHA WITH DESCENDER
+0528          ; Lu #       CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK
+052A          ; Lu #       CYRILLIC CAPITAL LETTER DZZHE
+052C          ; Lu #       CYRILLIC CAPITAL LETTER DCHE
+052E          ; Lu #       CYRILLIC CAPITAL LETTER EL WITH DESCENDER
+0531..0556    ; Lu #  [38] ARMENIAN CAPITAL LETTER AYB..ARMENIAN CAPITAL LETTER FEH
+10A0..10C5    ; Lu #  [38] GEORGIAN CAPITAL LETTER AN..GEORGIAN CAPITAL LETTER HOE
+10C7          ; Lu #       GEORGIAN CAPITAL LETTER YN
+10CD          ; Lu #       GEORGIAN CAPITAL LETTER AEN
+13A0..13F5    ; Lu #  [86] CHEROKEE LETTER A..CHEROKEE LETTER MV
+1C90..1CBA    ; Lu #  [43] GEORGIAN MTAVRULI CAPITAL LETTER AN..GEORGIAN MTAVRULI CAPITAL LETTER AIN
+1CBD..1CBF    ; Lu #   [3] GEORGIAN MTAVRULI CAPITAL LETTER AEN..GEORGIAN MTAVRULI CAPITAL LETTER LABIAL SIGN
+1E00          ; Lu #       LATIN CAPITAL LETTER A WITH RING BELOW
+1E02          ; Lu #       LATIN CAPITAL LETTER B WITH DOT ABOVE
+1E04          ; Lu #       LATIN CAPITAL LETTER B WITH DOT BELOW
+1E06          ; Lu #       LATIN CAPITAL LETTER B WITH LINE BELOW
+1E08          ; Lu #       LATIN CAPITAL LETTER C WITH CEDILLA AND ACUTE
+1E0A          ; Lu #       LATIN CAPITAL LETTER D WITH DOT ABOVE
+1E0C          ; Lu #       LATIN CAPITAL LETTER D WITH DOT BELOW
+1E0E          ; Lu #       LATIN CAPITAL LETTER D WITH LINE BELOW
+1E10          ; Lu #       LATIN CAPITAL LETTER D WITH CEDILLA
+1E12          ; Lu #       LATIN CAPITAL LETTER D WITH CIRCUMFLEX BELOW
+1E14          ; Lu #       LATIN CAPITAL LETTER E WITH MACRON AND GRAVE
+1E16          ; Lu #       LATIN CAPITAL LETTER E WITH MACRON AND ACUTE
+1E18          ; Lu #       LATIN CAPITAL LETTER E WITH CIRCUMFLEX BELOW
+1E1A          ; Lu #       LATIN CAPITAL LETTER E WITH TILDE BELOW
+1E1C          ; Lu #       LATIN CAPITAL LETTER E WITH CEDILLA AND BREVE
+1E1E          ; Lu #       LATIN CAPITAL LETTER F WITH DOT ABOVE
+1E20          ; Lu #       LATIN CAPITAL LETTER G WITH MACRON
+1E22          ; Lu #       LATIN CAPITAL LETTER H WITH DOT ABOVE
+1E24          ; Lu #       LATIN CAPITAL LETTER H WITH DOT BELOW
+1E26          ; Lu #       LATIN CAPITAL LETTER H WITH DIAERESIS
+1E28          ; Lu #       LATIN CAPITAL LETTER H WITH CEDILLA
+1E2A          ; Lu #       LATIN CAPITAL LETTER H WITH BREVE BELOW
+1E2C          ; Lu #       LATIN CAPITAL LETTER I WITH TILDE BELOW
+1E2E          ; Lu #       LATIN CAPITAL LETTER I WITH DIAERESIS AND ACUTE
+1E30          ; Lu #       LATIN CAPITAL LETTER K WITH ACUTE
+1E32          ; Lu #       LATIN CAPITAL LETTER K WITH DOT BELOW
+1E34          ; Lu #       LATIN CAPITAL LETTER K WITH LINE BELOW
+1E36          ; Lu #       LATIN CAPITAL LETTER L WITH DOT BELOW
+1E38          ; Lu #       LATIN CAPITAL LETTER L WITH DOT BELOW AND MACRON
+1E3A          ; Lu #       LATIN CAPITAL LETTER L WITH LINE BELOW
+1E3C          ; Lu #       LATIN CAPITAL LETTER L WITH CIRCUMFLEX BELOW
+1E3E          ; Lu #       LATIN CAPITAL LETTER M WITH ACUTE
+1E40          ; Lu #       LATIN CAPITAL LETTER M WITH DOT ABOVE
+1E42          ; Lu #       LATIN CAPITAL LETTER M WITH DOT BELOW
+1E44          ; Lu #       LATIN CAPITAL LETTER N WITH DOT ABOVE
+1E46          ; Lu #       LATIN CAPITAL LETTER N WITH DOT BELOW
+1E48          ; Lu #       LATIN CAPITAL LETTER N WITH LINE BELOW
+1E4A          ; Lu #       LATIN CAPITAL LETTER N WITH CIRCUMFLEX BELOW
+1E4C          ; Lu #       LATIN CAPITAL LETTER O WITH TILDE AND ACUTE
+1E4E          ; Lu #       LATIN CAPITAL LETTER O WITH TILDE AND DIAERESIS
+1E50          ; Lu #       LATIN CAPITAL LETTER O WITH MACRON AND GRAVE
+1E52          ; Lu #       LATIN CAPITAL LETTER O WITH MACRON AND ACUTE
+1E54          ; Lu #       LATIN CAPITAL LETTER P WITH ACUTE
+1E56          ; Lu #       LATIN CAPITAL LETTER P WITH DOT ABOVE
+1E58          ; Lu #       LATIN CAPITAL LETTER R WITH DOT ABOVE
+1E5A          ; Lu #       LATIN CAPITAL LETTER R WITH DOT BELOW
+1E5C          ; Lu #       LATIN CAPITAL LETTER R WITH DOT BELOW AND MACRON
+1E5E          ; Lu #       LATIN CAPITAL LETTER R WITH LINE BELOW
+1E60          ; Lu #       LATIN CAPITAL LETTER S WITH DOT ABOVE
+1E62          ; Lu #       LATIN CAPITAL LETTER S WITH DOT BELOW
+1E64          ; Lu #       LATIN CAPITAL LETTER S WITH ACUTE AND DOT ABOVE
+1E66          ; Lu #       LATIN CAPITAL LETTER S WITH CARON AND DOT ABOVE
+1E68          ; Lu #       LATIN CAPITAL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6A          ; Lu #       LATIN CAPITAL LETTER T WITH DOT ABOVE
+1E6C          ; Lu #       LATIN CAPITAL LETTER T WITH DOT BELOW
+1E6E          ; Lu #       LATIN CAPITAL LETTER T WITH LINE BELOW
+1E70          ; Lu #       LATIN CAPITAL LETTER T WITH CIRCUMFLEX BELOW
+1E72          ; Lu #       LATIN CAPITAL LETTER U WITH DIAERESIS BELOW
+1E74          ; Lu #       LATIN CAPITAL LETTER U WITH TILDE BELOW
+1E76          ; Lu #       LATIN CAPITAL LETTER U WITH CIRCUMFLEX BELOW
+1E78          ; Lu #       LATIN CAPITAL LETTER U WITH TILDE AND ACUTE
+1E7A          ; Lu #       LATIN CAPITAL LETTER U WITH MACRON AND DIAERESIS
+1E7C          ; Lu #       LATIN CAPITAL LETTER V WITH TILDE
+1E7E          ; Lu #       LATIN CAPITAL LETTER V WITH DOT BELOW
+1E80          ; Lu #       LATIN CAPITAL LETTER W WITH GRAVE
+1E82          ; Lu #       LATIN CAPITAL LETTER W WITH ACUTE
+1E84          ; Lu #       LATIN CAPITAL LETTER W WITH DIAERESIS
+1E86          ; Lu #       LATIN CAPITAL LETTER W WITH DOT ABOVE
+1E88          ; Lu #       LATIN CAPITAL LETTER W WITH DOT BELOW
+1E8A          ; Lu #       LATIN CAPITAL LETTER X WITH DOT ABOVE
+1E8C          ; Lu #       LATIN CAPITAL LETTER X WITH DIAERESIS
+1E8E          ; Lu #       LATIN CAPITAL LETTER Y WITH DOT ABOVE
+1E90          ; Lu #       LATIN CAPITAL LETTER Z WITH CIRCUMFLEX
+1E92          ; Lu #       LATIN CAPITAL LETTER Z WITH DOT BELOW
+1E94          ; Lu #       LATIN CAPITAL LETTER Z WITH LINE BELOW
+1E9E          ; Lu #       LATIN CAPITAL LETTER SHARP S
+1EA0          ; Lu #       LATIN CAPITAL LETTER A WITH DOT BELOW
+1EA2          ; Lu #       LATIN CAPITAL LETTER A WITH HOOK ABOVE
+1EA4          ; Lu #       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA6          ; Lu #       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA8          ; Lu #       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAA          ; Lu #       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAC          ; Lu #       LATIN CAPITAL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAE          ; Lu #       LATIN CAPITAL LETTER A WITH BREVE AND ACUTE
+1EB0          ; Lu #       LATIN CAPITAL LETTER A WITH BREVE AND GRAVE
+1EB2          ; Lu #       LATIN CAPITAL LETTER A WITH BREVE AND HOOK ABOVE
+1EB4          ; Lu #       LATIN CAPITAL LETTER A WITH BREVE AND TILDE
+1EB6          ; Lu #       LATIN CAPITAL LETTER A WITH BREVE AND DOT BELOW
+1EB8          ; Lu #       LATIN CAPITAL LETTER E WITH DOT BELOW
+1EBA          ; Lu #       LATIN CAPITAL LETTER E WITH HOOK ABOVE
+1EBC          ; Lu #       LATIN CAPITAL LETTER E WITH TILDE
+1EBE          ; Lu #       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC0          ; Lu #       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC2          ; Lu #       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC4          ; Lu #       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC6          ; Lu #       LATIN CAPITAL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC8          ; Lu #       LATIN CAPITAL LETTER I WITH HOOK ABOVE
+1ECA          ; Lu #       LATIN CAPITAL LETTER I WITH DOT BELOW
+1ECC          ; Lu #       LATIN CAPITAL LETTER O WITH DOT BELOW
+1ECE          ; Lu #       LATIN CAPITAL LETTER O WITH HOOK ABOVE
+1ED0          ; Lu #       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED2          ; Lu #       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED4          ; Lu #       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED6          ; Lu #       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED8          ; Lu #       LATIN CAPITAL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDA          ; Lu #       LATIN CAPITAL LETTER O WITH HORN AND ACUTE
+1EDC          ; Lu #       LATIN CAPITAL LETTER O WITH HORN AND GRAVE
+1EDE          ; Lu #       LATIN CAPITAL LETTER O WITH HORN AND HOOK ABOVE
+1EE0          ; Lu #       LATIN CAPITAL LETTER O WITH HORN AND TILDE
+1EE2          ; Lu #       LATIN CAPITAL LETTER O WITH HORN AND DOT BELOW
+1EE4          ; Lu #       LATIN CAPITAL LETTER U WITH DOT BELOW
+1EE6          ; Lu #       LATIN CAPITAL LETTER U WITH HOOK ABOVE
+1EE8          ; Lu #       LATIN CAPITAL LETTER U WITH HORN AND ACUTE
+1EEA          ; Lu #       LATIN CAPITAL LETTER U WITH HORN AND GRAVE
+1EEC          ; Lu #       LATIN CAPITAL LETTER U WITH HORN AND HOOK ABOVE
+1EEE          ; Lu #       LATIN CAPITAL LETTER U WITH HORN AND TILDE
+1EF0          ; Lu #       LATIN CAPITAL LETTER U WITH HORN AND DOT BELOW
+1EF2          ; Lu #       LATIN CAPITAL LETTER Y WITH GRAVE
+1EF4          ; Lu #       LATIN CAPITAL LETTER Y WITH DOT BELOW
+1EF6          ; Lu #       LATIN CAPITAL LETTER Y WITH HOOK ABOVE
+1EF8          ; Lu #       LATIN CAPITAL LETTER Y WITH TILDE
+1EFA          ; Lu #       LATIN CAPITAL LETTER MIDDLE-WELSH LL
+1EFC          ; Lu #       LATIN CAPITAL LETTER MIDDLE-WELSH V
+1EFE          ; Lu #       LATIN CAPITAL LETTER Y WITH LOOP
+1F08..1F0F    ; Lu #   [8] GREEK CAPITAL LETTER ALPHA WITH PSILI..GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F18..1F1D    ; Lu #   [6] GREEK CAPITAL LETTER EPSILON WITH PSILI..GREEK CAPITAL LETTER EPSILON WITH DASIA AND OXIA
+1F28..1F2F    ; Lu #   [8] GREEK CAPITAL LETTER ETA WITH PSILI..GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI
+1F38..1F3F    ; Lu #   [8] GREEK CAPITAL LETTER IOTA WITH PSILI..GREEK CAPITAL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F48..1F4D    ; Lu #   [6] GREEK CAPITAL LETTER OMICRON WITH PSILI..GREEK CAPITAL LETTER OMICRON WITH DASIA AND OXIA
+1F59          ; Lu #       GREEK CAPITAL LETTER UPSILON WITH DASIA
+1F5B          ; Lu #       GREEK CAPITAL LETTER UPSILON WITH DASIA AND VARIA
+1F5D          ; Lu #       GREEK CAPITAL LETTER UPSILON WITH DASIA AND OXIA
+1F5F          ; Lu #       GREEK CAPITAL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F68..1F6F    ; Lu #   [8] GREEK CAPITAL LETTER OMEGA WITH PSILI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1FB8..1FBB    ; Lu #   [4] GREEK CAPITAL LETTER ALPHA WITH VRACHY..GREEK CAPITAL LETTER ALPHA WITH OXIA
+1FC8..1FCB    ; Lu #   [4] GREEK CAPITAL LETTER EPSILON WITH VARIA..GREEK CAPITAL LETTER ETA WITH OXIA
+1FD8..1FDB    ; Lu #   [4] GREEK CAPITAL LETTER IOTA WITH VRACHY..GREEK CAPITAL LETTER IOTA WITH OXIA
+1FE8..1FEC    ; Lu #   [5] GREEK CAPITAL LETTER UPSILON WITH VRACHY..GREEK CAPITAL LETTER RHO WITH DASIA
+1FF8..1FFB    ; Lu #   [4] GREEK CAPITAL LETTER OMICRON WITH VARIA..GREEK CAPITAL LETTER OMEGA WITH OXIA
+2102          ; Lu #       DOUBLE-STRUCK CAPITAL C
+2107          ; Lu #       EULER CONSTANT
+210B..210D    ; Lu #   [3] SCRIPT CAPITAL H..DOUBLE-STRUCK CAPITAL H
+2110..2112    ; Lu #   [3] SCRIPT CAPITAL I..SCRIPT CAPITAL L
+2115          ; Lu #       DOUBLE-STRUCK CAPITAL N
+2119..211D    ; Lu #   [5] DOUBLE-STRUCK CAPITAL P..DOUBLE-STRUCK CAPITAL R
+2124          ; Lu #       DOUBLE-STRUCK CAPITAL Z
+2126          ; Lu #       OHM SIGN
+2128          ; Lu #       BLACK-LETTER CAPITAL Z
+212A..212D    ; Lu #   [4] KELVIN SIGN..BLACK-LETTER CAPITAL C
+2130..2133    ; Lu #   [4] SCRIPT CAPITAL E..SCRIPT CAPITAL M
+213E..213F    ; Lu #   [2] DOUBLE-STRUCK CAPITAL GAMMA..DOUBLE-STRUCK CAPITAL PI
+2145          ; Lu #       DOUBLE-STRUCK ITALIC CAPITAL D
+2183          ; Lu #       ROMAN NUMERAL REVERSED ONE HUNDRED
+2C00..2C2F    ; Lu #  [48] GLAGOLITIC CAPITAL LETTER AZU..GLAGOLITIC CAPITAL LETTER CAUDATE CHRIVI
+2C60          ; Lu #       LATIN CAPITAL LETTER L WITH DOUBLE BAR
+2C62..2C64    ; Lu #   [3] LATIN CAPITAL LETTER L WITH MIDDLE TILDE..LATIN CAPITAL LETTER R WITH TAIL
+2C67          ; Lu #       LATIN CAPITAL LETTER H WITH DESCENDER
+2C69          ; Lu #       LATIN CAPITAL LETTER K WITH DESCENDER
+2C6B          ; Lu #       LATIN CAPITAL LETTER Z WITH DESCENDER
+2C6D..2C70    ; Lu #   [4] LATIN CAPITAL LETTER ALPHA..LATIN CAPITAL LETTER TURNED ALPHA
+2C72          ; Lu #       LATIN CAPITAL LETTER W WITH HOOK
+2C75          ; Lu #       LATIN CAPITAL LETTER HALF H
+2C7E..2C80    ; Lu #   [3] LATIN CAPITAL LETTER S WITH SWASH TAIL..COPTIC CAPITAL LETTER ALFA
+2C82          ; Lu #       COPTIC CAPITAL LETTER VIDA
+2C84          ; Lu #       COPTIC CAPITAL LETTER GAMMA
+2C86          ; Lu #       COPTIC CAPITAL LETTER DALDA
+2C88          ; Lu #       COPTIC CAPITAL LETTER EIE
+2C8A          ; Lu #       COPTIC CAPITAL LETTER SOU
+2C8C          ; Lu #       COPTIC CAPITAL LETTER ZATA
+2C8E          ; Lu #       COPTIC CAPITAL LETTER HATE
+2C90          ; Lu #       COPTIC CAPITAL LETTER THETHE
+2C92          ; Lu #       COPTIC CAPITAL LETTER IAUDA
+2C94          ; Lu #       COPTIC CAPITAL LETTER KAPA
+2C96          ; Lu #       COPTIC CAPITAL LETTER LAULA
+2C98          ; Lu #       COPTIC CAPITAL LETTER MI
+2C9A          ; Lu #       COPTIC CAPITAL LETTER NI
+2C9C          ; Lu #       COPTIC CAPITAL LETTER KSI
+2C9E          ; Lu #       COPTIC CAPITAL LETTER O
+2CA0          ; Lu #       COPTIC CAPITAL LETTER PI
+2CA2          ; Lu #       COPTIC CAPITAL LETTER RO
+2CA4          ; Lu #       COPTIC CAPITAL LETTER SIMA
+2CA6          ; Lu #       COPTIC CAPITAL LETTER TAU
+2CA8          ; Lu #       COPTIC CAPITAL LETTER UA
+2CAA          ; Lu #       COPTIC CAPITAL LETTER FI
+2CAC          ; Lu #       COPTIC CAPITAL LETTER KHI
+2CAE          ; Lu #       COPTIC CAPITAL LETTER PSI
+2CB0          ; Lu #       COPTIC CAPITAL LETTER OOU
+2CB2          ; Lu #       COPTIC CAPITAL LETTER DIALECT-P ALEF
+2CB4          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC AIN
+2CB6          ; Lu #       COPTIC CAPITAL LETTER CRYPTOGRAMMIC EIE
+2CB8          ; Lu #       COPTIC CAPITAL LETTER DIALECT-P KAPA
+2CBA          ; Lu #       COPTIC CAPITAL LETTER DIALECT-P NI
+2CBC          ; Lu #       COPTIC CAPITAL LETTER CRYPTOGRAMMIC NI
+2CBE          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC OOU
+2CC0          ; Lu #       COPTIC CAPITAL LETTER SAMPI
+2CC2          ; Lu #       COPTIC CAPITAL LETTER CROSSED SHEI
+2CC4          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC SHEI
+2CC6          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC ESH
+2CC8          ; Lu #       COPTIC CAPITAL LETTER AKHMIMIC KHEI
+2CCA          ; Lu #       COPTIC CAPITAL LETTER DIALECT-P HORI
+2CCC          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC HORI
+2CCE          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC HA
+2CD0          ; Lu #       COPTIC CAPITAL LETTER L-SHAPED HA
+2CD2          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC HEI
+2CD4          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC HAT
+2CD6          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC GANGIA
+2CD8          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC DJA
+2CDA          ; Lu #       COPTIC CAPITAL LETTER OLD COPTIC SHIMA
+2CDC          ; Lu #       COPTIC CAPITAL LETTER OLD NUBIAN SHIMA
+2CDE          ; Lu #       COPTIC CAPITAL LETTER OLD NUBIAN NGI
+2CE0          ; Lu #       COPTIC CAPITAL LETTER OLD NUBIAN NYI
+2CE2          ; Lu #       COPTIC CAPITAL LETTER OLD NUBIAN WAU
+2CEB          ; Lu #       COPTIC CAPITAL LETTER CRYPTOGRAMMIC SHEI
+2CED          ; Lu #       COPTIC CAPITAL LETTER CRYPTOGRAMMIC GANGIA
+2CF2          ; Lu #       COPTIC CAPITAL LETTER BOHAIRIC KHEI
+A640          ; Lu #       CYRILLIC CAPITAL LETTER ZEMLYA
+A642          ; Lu #       CYRILLIC CAPITAL LETTER DZELO
+A644          ; Lu #       CYRILLIC CAPITAL LETTER REVERSED DZE
+A646          ; Lu #       CYRILLIC CAPITAL LETTER IOTA
+A648          ; Lu #       CYRILLIC CAPITAL LETTER DJERV
+A64A          ; Lu #       CYRILLIC CAPITAL LETTER MONOGRAPH UK
+A64C          ; Lu #       CYRILLIC CAPITAL LETTER BROAD OMEGA
+A64E          ; Lu #       CYRILLIC CAPITAL LETTER NEUTRAL YER
+A650          ; Lu #       CYRILLIC CAPITAL LETTER YERU WITH BACK YER
+A652          ; Lu #       CYRILLIC CAPITAL LETTER IOTIFIED YAT
+A654          ; Lu #       CYRILLIC CAPITAL LETTER REVERSED YU
+A656          ; Lu #       CYRILLIC CAPITAL LETTER IOTIFIED A
+A658          ; Lu #       CYRILLIC CAPITAL LETTER CLOSED LITTLE YUS
+A65A          ; Lu #       CYRILLIC CAPITAL LETTER BLENDED YUS
+A65C          ; Lu #       CYRILLIC CAPITAL LETTER IOTIFIED CLOSED LITTLE YUS
+A65E          ; Lu #       CYRILLIC CAPITAL LETTER YN
+A660          ; Lu #       CYRILLIC CAPITAL LETTER REVERSED TSE
+A662          ; Lu #       CYRILLIC CAPITAL LETTER SOFT DE
+A664          ; Lu #       CYRILLIC CAPITAL LETTER SOFT EL
+A666          ; Lu #       CYRILLIC CAPITAL LETTER SOFT EM
+A668          ; Lu #       CYRILLIC CAPITAL LETTER MONOCULAR O
+A66A          ; Lu #       CYRILLIC CAPITAL LETTER BINOCULAR O
+A66C          ; Lu #       CYRILLIC CAPITAL LETTER DOUBLE MONOCULAR O
+A680          ; Lu #       CYRILLIC CAPITAL LETTER DWE
+A682          ; Lu #       CYRILLIC CAPITAL LETTER DZWE
+A684          ; Lu #       CYRILLIC CAPITAL LETTER ZHWE
+A686          ; Lu #       CYRILLIC CAPITAL LETTER CCHE
+A688          ; Lu #       CYRILLIC CAPITAL LETTER DZZE
+A68A          ; Lu #       CYRILLIC CAPITAL LETTER TE WITH MIDDLE HOOK
+A68C          ; Lu #       CYRILLIC CAPITAL LETTER TWE
+A68E          ; Lu #       CYRILLIC CAPITAL LETTER TSWE
+A690          ; Lu #       CYRILLIC CAPITAL LETTER TSSE
+A692          ; Lu #       CYRILLIC CAPITAL LETTER TCHE
+A694          ; Lu #       CYRILLIC CAPITAL LETTER HWE
+A696          ; Lu #       CYRILLIC CAPITAL LETTER SHWE
+A698          ; Lu #       CYRILLIC CAPITAL LETTER DOUBLE O
+A69A          ; Lu #       CYRILLIC CAPITAL LETTER CROSSED O
+A722          ; Lu #       LATIN CAPITAL LETTER EGYPTOLOGICAL ALEF
+A724          ; Lu #       LATIN CAPITAL LETTER EGYPTOLOGICAL AIN
+A726          ; Lu #       LATIN CAPITAL LETTER HENG
+A728          ; Lu #       LATIN CAPITAL LETTER TZ
+A72A          ; Lu #       LATIN CAPITAL LETTER TRESILLO
+A72C          ; Lu #       LATIN CAPITAL LETTER CUATRILLO
+A72E          ; Lu #       LATIN CAPITAL LETTER CUATRILLO WITH COMMA
+A732          ; Lu #       LATIN CAPITAL LETTER AA
+A734          ; Lu #       LATIN CAPITAL LETTER AO
+A736          ; Lu #       LATIN CAPITAL LETTER AU
+A738          ; Lu #       LATIN CAPITAL LETTER AV
+A73A          ; Lu #       LATIN CAPITAL LETTER AV WITH HORIZONTAL BAR
+A73C          ; Lu #       LATIN CAPITAL LETTER AY
+A73E          ; Lu #       LATIN CAPITAL LETTER REVERSED C WITH DOT
+A740          ; Lu #       LATIN CAPITAL LETTER K WITH STROKE
+A742          ; Lu #       LATIN CAPITAL LETTER K WITH DIAGONAL STROKE
+A744          ; Lu #       LATIN CAPITAL LETTER K WITH STROKE AND DIAGONAL STROKE
+A746          ; Lu #       LATIN CAPITAL LETTER BROKEN L
+A748          ; Lu #       LATIN CAPITAL LETTER L WITH HIGH STROKE
+A74A          ; Lu #       LATIN CAPITAL LETTER O WITH LONG STROKE OVERLAY
+A74C          ; Lu #       LATIN CAPITAL LETTER O WITH LOOP
+A74E          ; Lu #       LATIN CAPITAL LETTER OO
+A750          ; Lu #       LATIN CAPITAL LETTER P WITH STROKE THROUGH DESCENDER
+A752          ; Lu #       LATIN CAPITAL LETTER P WITH FLOURISH
+A754          ; Lu #       LATIN CAPITAL LETTER P WITH SQUIRREL TAIL
+A756          ; Lu #       LATIN CAPITAL LETTER Q WITH STROKE THROUGH DESCENDER
+A758          ; Lu #       LATIN CAPITAL LETTER Q WITH DIAGONAL STROKE
+A75A          ; Lu #       LATIN CAPITAL LETTER R ROTUNDA
+A75C          ; Lu #       LATIN CAPITAL LETTER RUM ROTUNDA
+A75E          ; Lu #       LATIN CAPITAL LETTER V WITH DIAGONAL STROKE
+A760          ; Lu #       LATIN CAPITAL LETTER VY
+A762          ; Lu #       LATIN CAPITAL LETTER VISIGOTHIC Z
+A764          ; Lu #       LATIN CAPITAL LETTER THORN WITH STROKE
+A766          ; Lu #       LATIN CAPITAL LETTER THORN WITH STROKE THROUGH DESCENDER
+A768          ; Lu #       LATIN CAPITAL LETTER VEND
+A76A          ; Lu #       LATIN CAPITAL LETTER ET
+A76C          ; Lu #       LATIN CAPITAL LETTER IS
+A76E          ; Lu #       LATIN CAPITAL LETTER CON
+A779          ; Lu #       LATIN CAPITAL LETTER INSULAR D
+A77B          ; Lu #       LATIN CAPITAL LETTER INSULAR F
+A77D..A77E    ; Lu #   [2] LATIN CAPITAL LETTER INSULAR G..LATIN CAPITAL LETTER TURNED INSULAR G
+A780          ; Lu #       LATIN CAPITAL LETTER TURNED L
+A782          ; Lu #       LATIN CAPITAL LETTER INSULAR R
+A784          ; Lu #       LATIN CAPITAL LETTER INSULAR S
+A786          ; Lu #       LATIN CAPITAL LETTER INSULAR T
+A78B          ; Lu #       LATIN CAPITAL LETTER SALTILLO
+A78D          ; Lu #       LATIN CAPITAL LETTER TURNED H
+A790          ; Lu #       LATIN CAPITAL LETTER N WITH DESCENDER
+A792          ; Lu #       LATIN CAPITAL LETTER C WITH BAR
+A796          ; Lu #       LATIN CAPITAL LETTER B WITH FLOURISH
+A798          ; Lu #       LATIN CAPITAL LETTER F WITH STROKE
+A79A          ; Lu #       LATIN CAPITAL LETTER VOLAPUK AE
+A79C          ; Lu #       LATIN CAPITAL LETTER VOLAPUK OE
+A79E          ; Lu #       LATIN CAPITAL LETTER VOLAPUK UE
+A7A0          ; Lu #       LATIN CAPITAL LETTER G WITH OBLIQUE STROKE
+A7A2          ; Lu #       LATIN CAPITAL LETTER K WITH OBLIQUE STROKE
+A7A4          ; Lu #       LATIN CAPITAL LETTER N WITH OBLIQUE STROKE
+A7A6          ; Lu #       LATIN CAPITAL LETTER R WITH OBLIQUE STROKE
+A7A8          ; Lu #       LATIN CAPITAL LETTER S WITH OBLIQUE STROKE
+A7AA..A7AE    ; Lu #   [5] LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPITAL LETTER SMALL CAPITAL I
+A7B0..A7B4    ; Lu #   [5] LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL LETTER BETA
+A7B6          ; Lu #       LATIN CAPITAL LETTER OMEGA
+A7B8          ; Lu #       LATIN CAPITAL LETTER U WITH STROKE
+A7BA          ; Lu #       LATIN CAPITAL LETTER GLOTTAL A
+A7BC          ; Lu #       LATIN CAPITAL LETTER GLOTTAL I
+A7BE          ; Lu #       LATIN CAPITAL LETTER GLOTTAL U
+A7C0          ; Lu #       LATIN CAPITAL LETTER OLD POLISH O
+A7C2          ; Lu #       LATIN CAPITAL LETTER ANGLICANA W
+A7C4..A7C7    ; Lu #   [4] LATIN CAPITAL LETTER C WITH PALATAL HOOK..LATIN CAPITAL LETTER D WITH SHORT STROKE OVERLAY
+A7C9          ; Lu #       LATIN CAPITAL LETTER S WITH SHORT STROKE OVERLAY
+A7D0          ; Lu #       LATIN CAPITAL LETTER CLOSED INSULAR G
+A7D6          ; Lu #       LATIN CAPITAL LETTER MIDDLE SCOTS S
+A7D8          ; Lu #       LATIN CAPITAL LETTER SIGMOID S
+A7F5          ; Lu #       LATIN CAPITAL LETTER REVERSED HALF H
+FF21..FF3A    ; Lu #  [26] FULLWIDTH LATIN CAPITAL LETTER A..FULLWIDTH LATIN CAPITAL LETTER Z
+10400..10427  ; Lu #  [40] DESERET CAPITAL LETTER LONG I..DESERET CAPITAL LETTER EW
+104B0..104D3  ; Lu #  [36] OSAGE CAPITAL LETTER A..OSAGE CAPITAL LETTER ZHA
+10570..1057A  ; Lu #  [11] VITHKUQI CAPITAL LETTER A..VITHKUQI CAPITAL LETTER GA
+1057C..1058A  ; Lu #  [15] VITHKUQI CAPITAL LETTER HA..VITHKUQI CAPITAL LETTER RE
+1058C..10592  ; Lu #   [7] VITHKUQI CAPITAL LETTER SE..VITHKUQI CAPITAL LETTER XE
+10594..10595  ; Lu #   [2] VITHKUQI CAPITAL LETTER Y..VITHKUQI CAPITAL LETTER ZE
+10C80..10CB2  ; Lu #  [51] OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN CAPITAL LETTER US
+118A0..118BF  ; Lu #  [32] WARANG CITI CAPITAL LETTER NGAA..WARANG CITI CAPITAL LETTER VIYO
+16E40..16E5F  ; Lu #  [32] MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAPITAL LETTER Y
+1D400..1D419  ; Lu #  [26] MATHEMATICAL BOLD CAPITAL A..MATHEMATICAL BOLD CAPITAL Z
+1D434..1D44D  ; Lu #  [26] MATHEMATICAL ITALIC CAPITAL A..MATHEMATICAL ITALIC CAPITAL Z
+1D468..1D481  ; Lu #  [26] MATHEMATICAL BOLD ITALIC CAPITAL A..MATHEMATICAL BOLD ITALIC CAPITAL Z
+1D49C         ; Lu #       MATHEMATICAL SCRIPT CAPITAL A
+1D49E..1D49F  ; Lu #   [2] MATHEMATICAL SCRIPT CAPITAL C..MATHEMATICAL SCRIPT CAPITAL D
+1D4A2         ; Lu #       MATHEMATICAL SCRIPT CAPITAL G
+1D4A5..1D4A6  ; Lu #   [2] MATHEMATICAL SCRIPT CAPITAL J..MATHEMATICAL SCRIPT CAPITAL K
+1D4A9..1D4AC  ; Lu #   [4] MATHEMATICAL SCRIPT CAPITAL N..MATHEMATICAL SCRIPT CAPITAL Q
+1D4AE..1D4B5  ; Lu #   [8] MATHEMATICAL SCRIPT CAPITAL S..MATHEMATICAL SCRIPT CAPITAL Z
+1D4D0..1D4E9  ; Lu #  [26] MATHEMATICAL BOLD SCRIPT CAPITAL A..MATHEMATICAL BOLD SCRIPT CAPITAL Z
+1D504..1D505  ; Lu #   [2] MATHEMATICAL FRAKTUR CAPITAL A..MATHEMATICAL FRAKTUR CAPITAL B
+1D507..1D50A  ; Lu #   [4] MATHEMATICAL FRAKTUR CAPITAL D..MATHEMATICAL FRAKTUR CAPITAL G
+1D50D..1D514  ; Lu #   [8] MATHEMATICAL FRAKTUR CAPITAL J..MATHEMATICAL FRAKTUR CAPITAL Q
+1D516..1D51C  ; Lu #   [7] MATHEMATICAL FRAKTUR CAPITAL S..MATHEMATICAL FRAKTUR CAPITAL Y
+1D538..1D539  ; Lu #   [2] MATHEMATICAL DOUBLE-STRUCK CAPITAL A..MATHEMATICAL DOUBLE-STRUCK CAPITAL B
+1D53B..1D53E  ; Lu #   [4] MATHEMATICAL DOUBLE-STRUCK CAPITAL D..MATHEMATICAL DOUBLE-STRUCK CAPITAL G
+1D540..1D544  ; Lu #   [5] MATHEMATICAL DOUBLE-STRUCK CAPITAL I..MATHEMATICAL DOUBLE-STRUCK CAPITAL M
+1D546         ; Lu #       MATHEMATICAL DOUBLE-STRUCK CAPITAL O
+1D54A..1D550  ; Lu #   [7] MATHEMATICAL DOUBLE-STRUCK CAPITAL S..MATHEMATICAL DOUBLE-STRUCK CAPITAL Y
+1D56C..1D585  ; Lu #  [26] MATHEMATICAL BOLD FRAKTUR CAPITAL A..MATHEMATICAL BOLD FRAKTUR CAPITAL Z
+1D5A0..1D5B9  ; Lu #  [26] MATHEMATICAL SANS-SERIF CAPITAL A..MATHEMATICAL SANS-SERIF CAPITAL Z
+1D5D4..1D5ED  ; Lu #  [26] MATHEMATICAL SANS-SERIF BOLD CAPITAL A..MATHEMATICAL SANS-SERIF BOLD CAPITAL Z
+1D608..1D621  ; Lu #  [26] MATHEMATICAL SANS-SERIF ITALIC CAPITAL A..MATHEMATICAL SANS-SERIF ITALIC CAPITAL Z
+1D63C..1D655  ; Lu #  [26] MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL A..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL Z
+1D670..1D689  ; Lu #  [26] MATHEMATICAL MONOSPACE CAPITAL A..MATHEMATICAL MONOSPACE CAPITAL Z
+1D6A8..1D6C0  ; Lu #  [25] MATHEMATICAL BOLD CAPITAL ALPHA..MATHEMATICAL BOLD CAPITAL OMEGA
+1D6E2..1D6FA  ; Lu #  [25] MATHEMATICAL ITALIC CAPITAL ALPHA..MATHEMATICAL ITALIC CAPITAL OMEGA
+1D71C..1D734  ; Lu #  [25] MATHEMATICAL BOLD ITALIC CAPITAL ALPHA..MATHEMATICAL BOLD ITALIC CAPITAL OMEGA
+1D756..1D76E  ; Lu #  [25] MATHEMATICAL SANS-SERIF BOLD CAPITAL ALPHA..MATHEMATICAL SANS-SERIF BOLD CAPITAL OMEGA
+1D790..1D7A8  ; Lu #  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL OMEGA
+1D7CA         ; Lu #       MATHEMATICAL BOLD CAPITAL DIGAMMA
+1E900..1E921  ; Lu #  [34] ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETTER SHA
+
+# Total code points: 1831
+
+# ================================================
+
+# General_Category=Lowercase_Letter
+
+0061..007A    ; Ll #  [26] LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+00B5          ; Ll #       MICRO SIGN
+00DF..00F6    ; Ll #  [24] LATIN SMALL LETTER SHARP S..LATIN SMALL LETTER O WITH DIAERESIS
+00F8..00FF    ; Ll #   [8] LATIN SMALL LETTER O WITH STROKE..LATIN SMALL LETTER Y WITH DIAERESIS
+0101          ; Ll #       LATIN SMALL LETTER A WITH MACRON
+0103          ; Ll #       LATIN SMALL LETTER A WITH BREVE
+0105          ; Ll #       LATIN SMALL LETTER A WITH OGONEK
+0107          ; Ll #       LATIN SMALL LETTER C WITH ACUTE
+0109          ; Ll #       LATIN SMALL LETTER C WITH CIRCUMFLEX
+010B          ; Ll #       LATIN SMALL LETTER C WITH DOT ABOVE
+010D          ; Ll #       LATIN SMALL LETTER C WITH CARON
+010F          ; Ll #       LATIN SMALL LETTER D WITH CARON
+0111          ; Ll #       LATIN SMALL LETTER D WITH STROKE
+0113          ; Ll #       LATIN SMALL LETTER E WITH MACRON
+0115          ; Ll #       LATIN SMALL LETTER E WITH BREVE
+0117          ; Ll #       LATIN SMALL LETTER E WITH DOT ABOVE
+0119          ; Ll #       LATIN SMALL LETTER E WITH OGONEK
+011B          ; Ll #       LATIN SMALL LETTER E WITH CARON
+011D          ; Ll #       LATIN SMALL LETTER G WITH CIRCUMFLEX
+011F          ; Ll #       LATIN SMALL LETTER G WITH BREVE
+0121          ; Ll #       LATIN SMALL LETTER G WITH DOT ABOVE
+0123          ; Ll #       LATIN SMALL LETTER G WITH CEDILLA
+0125          ; Ll #       LATIN SMALL LETTER H WITH CIRCUMFLEX
+0127          ; Ll #       LATIN SMALL LETTER H WITH STROKE
+0129          ; Ll #       LATIN SMALL LETTER I WITH TILDE
+012B          ; Ll #       LATIN SMALL LETTER I WITH MACRON
+012D          ; Ll #       LATIN SMALL LETTER I WITH BREVE
+012F          ; Ll #       LATIN SMALL LETTER I WITH OGONEK
+0131          ; Ll #       LATIN SMALL LETTER DOTLESS I
+0133          ; Ll #       LATIN SMALL LIGATURE IJ
+0135          ; Ll #       LATIN SMALL LETTER J WITH CIRCUMFLEX
+0137..0138    ; Ll #   [2] LATIN SMALL LETTER K WITH CEDILLA..LATIN SMALL LETTER KRA
+013A          ; Ll #       LATIN SMALL LETTER L WITH ACUTE
+013C          ; Ll #       LATIN SMALL LETTER L WITH CEDILLA
+013E          ; Ll #       LATIN SMALL LETTER L WITH CARON
+0140          ; Ll #       LATIN SMALL LETTER L WITH MIDDLE DOT
+0142          ; Ll #       LATIN SMALL LETTER L WITH STROKE
+0144          ; Ll #       LATIN SMALL LETTER N WITH ACUTE
+0146          ; Ll #       LATIN SMALL LETTER N WITH CEDILLA
+0148..0149    ; Ll #   [2] LATIN SMALL LETTER N WITH CARON..LATIN SMALL LETTER N PRECEDED BY APOSTROPHE
+014B          ; Ll #       LATIN SMALL LETTER ENG
+014D          ; Ll #       LATIN SMALL LETTER O WITH MACRON
+014F          ; Ll #       LATIN SMALL LETTER O WITH BREVE
+0151          ; Ll #       LATIN SMALL LETTER O WITH DOUBLE ACUTE
+0153          ; Ll #       LATIN SMALL LIGATURE OE
+0155          ; Ll #       LATIN SMALL LETTER R WITH ACUTE
+0157          ; Ll #       LATIN SMALL LETTER R WITH CEDILLA
+0159          ; Ll #       LATIN SMALL LETTER R WITH CARON
+015B          ; Ll #       LATIN SMALL LETTER S WITH ACUTE
+015D          ; Ll #       LATIN SMALL LETTER S WITH CIRCUMFLEX
+015F          ; Ll #       LATIN SMALL LETTER S WITH CEDILLA
+0161          ; Ll #       LATIN SMALL LETTER S WITH CARON
+0163          ; Ll #       LATIN SMALL LETTER T WITH CEDILLA
+0165          ; Ll #       LATIN SMALL LETTER T WITH CARON
+0167          ; Ll #       LATIN SMALL LETTER T WITH STROKE
+0169          ; Ll #       LATIN SMALL LETTER U WITH TILDE
+016B          ; Ll #       LATIN SMALL LETTER U WITH MACRON
+016D          ; Ll #       LATIN SMALL LETTER U WITH BREVE
+016F          ; Ll #       LATIN SMALL LETTER U WITH RING ABOVE
+0171          ; Ll #       LATIN SMALL LETTER U WITH DOUBLE ACUTE
+0173          ; Ll #       LATIN SMALL LETTER U WITH OGONEK
+0175          ; Ll #       LATIN SMALL LETTER W WITH CIRCUMFLEX
+0177          ; Ll #       LATIN SMALL LETTER Y WITH CIRCUMFLEX
+017A          ; Ll #       LATIN SMALL LETTER Z WITH ACUTE
+017C          ; Ll #       LATIN SMALL LETTER Z WITH DOT ABOVE
+017E..0180    ; Ll #   [3] LATIN SMALL LETTER Z WITH CARON..LATIN SMALL LETTER B WITH STROKE
+0183          ; Ll #       LATIN SMALL LETTER B WITH TOPBAR
+0185          ; Ll #       LATIN SMALL LETTER TONE SIX
+0188          ; Ll #       LATIN SMALL LETTER C WITH HOOK
+018C..018D    ; Ll #   [2] LATIN SMALL LETTER D WITH TOPBAR..LATIN SMALL LETTER TURNED DELTA
+0192          ; Ll #       LATIN SMALL LETTER F WITH HOOK
+0195          ; Ll #       LATIN SMALL LETTER HV
+0199..019B    ; Ll #   [3] LATIN SMALL LETTER K WITH HOOK..LATIN SMALL LETTER LAMBDA WITH STROKE
+019E          ; Ll #       LATIN SMALL LETTER N WITH LONG RIGHT LEG
+01A1          ; Ll #       LATIN SMALL LETTER O WITH HORN
+01A3          ; Ll #       LATIN SMALL LETTER OI
+01A5          ; Ll #       LATIN SMALL LETTER P WITH HOOK
+01A8          ; Ll #       LATIN SMALL LETTER TONE TWO
+01AA..01AB    ; Ll #   [2] LATIN LETTER REVERSED ESH LOOP..LATIN SMALL LETTER T WITH PALATAL HOOK
+01AD          ; Ll #       LATIN SMALL LETTER T WITH HOOK
+01B0          ; Ll #       LATIN SMALL LETTER U WITH HORN
+01B4          ; Ll #       LATIN SMALL LETTER Y WITH HOOK
+01B6          ; Ll #       LATIN SMALL LETTER Z WITH STROKE
+01B9..01BA    ; Ll #   [2] LATIN SMALL LETTER EZH REVERSED..LATIN SMALL LETTER EZH WITH TAIL
+01BD..01BF    ; Ll #   [3] LATIN SMALL LETTER TONE FIVE..LATIN LETTER WYNN
+01C6          ; Ll #       LATIN SMALL LETTER DZ WITH CARON
+01C9          ; Ll #       LATIN SMALL LETTER LJ
+01CC          ; Ll #       LATIN SMALL LETTER NJ
+01CE          ; Ll #       LATIN SMALL LETTER A WITH CARON
+01D0          ; Ll #       LATIN SMALL LETTER I WITH CARON
+01D2          ; Ll #       LATIN SMALL LETTER O WITH CARON
+01D4          ; Ll #       LATIN SMALL LETTER U WITH CARON
+01D6          ; Ll #       LATIN SMALL LETTER U WITH DIAERESIS AND MACRON
+01D8          ; Ll #       LATIN SMALL LETTER U WITH DIAERESIS AND ACUTE
+01DA          ; Ll #       LATIN SMALL LETTER U WITH DIAERESIS AND CARON
+01DC..01DD    ; Ll #   [2] LATIN SMALL LETTER U WITH DIAERESIS AND GRAVE..LATIN SMALL LETTER TURNED E
+01DF          ; Ll #       LATIN SMALL LETTER A WITH DIAERESIS AND MACRON
+01E1          ; Ll #       LATIN SMALL LETTER A WITH DOT ABOVE AND MACRON
+01E3          ; Ll #       LATIN SMALL LETTER AE WITH MACRON
+01E5          ; Ll #       LATIN SMALL LETTER G WITH STROKE
+01E7          ; Ll #       LATIN SMALL LETTER G WITH CARON
+01E9          ; Ll #       LATIN SMALL LETTER K WITH CARON
+01EB          ; Ll #       LATIN SMALL LETTER O WITH OGONEK
+01ED          ; Ll #       LATIN SMALL LETTER O WITH OGONEK AND MACRON
+01EF..01F0    ; Ll #   [2] LATIN SMALL LETTER EZH WITH CARON..LATIN SMALL LETTER J WITH CARON
+01F3          ; Ll #       LATIN SMALL LETTER DZ
+01F5          ; Ll #       LATIN SMALL LETTER G WITH ACUTE
+01F9          ; Ll #       LATIN SMALL LETTER N WITH GRAVE
+01FB          ; Ll #       LATIN SMALL LETTER A WITH RING ABOVE AND ACUTE
+01FD          ; Ll #       LATIN SMALL LETTER AE WITH ACUTE
+01FF          ; Ll #       LATIN SMALL LETTER O WITH STROKE AND ACUTE
+0201          ; Ll #       LATIN SMALL LETTER A WITH DOUBLE GRAVE
+0203          ; Ll #       LATIN SMALL LETTER A WITH INVERTED BREVE
+0205          ; Ll #       LATIN SMALL LETTER E WITH DOUBLE GRAVE
+0207          ; Ll #       LATIN SMALL LETTER E WITH INVERTED BREVE
+0209          ; Ll #       LATIN SMALL LETTER I WITH DOUBLE GRAVE
+020B          ; Ll #       LATIN SMALL LETTER I WITH INVERTED BREVE
+020D          ; Ll #       LATIN SMALL LETTER O WITH DOUBLE GRAVE
+020F          ; Ll #       LATIN SMALL LETTER O WITH INVERTED BREVE
+0211          ; Ll #       LATIN SMALL LETTER R WITH DOUBLE GRAVE
+0213          ; Ll #       LATIN SMALL LETTER R WITH INVERTED BREVE
+0215          ; Ll #       LATIN SMALL LETTER U WITH DOUBLE GRAVE
+0217          ; Ll #       LATIN SMALL LETTER U WITH INVERTED BREVE
+0219          ; Ll #       LATIN SMALL LETTER S WITH COMMA BELOW
+021B          ; Ll #       LATIN SMALL LETTER T WITH COMMA BELOW
+021D          ; Ll #       LATIN SMALL LETTER YOGH
+021F          ; Ll #       LATIN SMALL LETTER H WITH CARON
+0221          ; Ll #       LATIN SMALL LETTER D WITH CURL
+0223          ; Ll #       LATIN SMALL LETTER OU
+0225          ; Ll #       LATIN SMALL LETTER Z WITH HOOK
+0227          ; Ll #       LATIN SMALL LETTER A WITH DOT ABOVE
+0229          ; Ll #       LATIN SMALL LETTER E WITH CEDILLA
+022B          ; Ll #       LATIN SMALL LETTER O WITH DIAERESIS AND MACRON
+022D          ; Ll #       LATIN SMALL LETTER O WITH TILDE AND MACRON
+022F          ; Ll #       LATIN SMALL LETTER O WITH DOT ABOVE
+0231          ; Ll #       LATIN SMALL LETTER O WITH DOT ABOVE AND MACRON
+0233..0239    ; Ll #   [7] LATIN SMALL LETTER Y WITH MACRON..LATIN SMALL LETTER QP DIGRAPH
+023C          ; Ll #       LATIN SMALL LETTER C WITH STROKE
+023F..0240    ; Ll #   [2] LATIN SMALL LETTER S WITH SWASH TAIL..LATIN SMALL LETTER Z WITH SWASH TAIL
+0242          ; Ll #       LATIN SMALL LETTER GLOTTAL STOP
+0247          ; Ll #       LATIN SMALL LETTER E WITH STROKE
+0249          ; Ll #       LATIN SMALL LETTER J WITH STROKE
+024B          ; Ll #       LATIN SMALL LETTER Q WITH HOOK TAIL
+024D          ; Ll #       LATIN SMALL LETTER R WITH STROKE
+024F..0293    ; Ll #  [69] LATIN SMALL LETTER Y WITH STROKE..LATIN SMALL LETTER EZH WITH CURL
+0295..02AF    ; Ll #  [27] LATIN LETTER PHARYNGEAL VOICED FRICATIVE..LATIN SMALL LETTER TURNED H WITH FISHHOOK AND TAIL
+0371          ; Ll #       GREEK SMALL LETTER HETA
+0373          ; Ll #       GREEK SMALL LETTER ARCHAIC SAMPI
+0377          ; Ll #       GREEK SMALL LETTER PAMPHYLIAN DIGAMMA
+037B..037D    ; Ll #   [3] GREEK SMALL REVERSED LUNATE SIGMA SYMBOL..GREEK SMALL REVERSED DOTTED LUNATE SIGMA SYMBOL
+0390          ; Ll #       GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
+03AC..03CE    ; Ll #  [35] GREEK SMALL LETTER ALPHA WITH TONOS..GREEK SMALL LETTER OMEGA WITH TONOS
+03D0..03D1    ; Ll #   [2] GREEK BETA SYMBOL..GREEK THETA SYMBOL
+03D5..03D7    ; Ll #   [3] GREEK PHI SYMBOL..GREEK KAI SYMBOL
+03D9          ; Ll #       GREEK SMALL LETTER ARCHAIC KOPPA
+03DB          ; Ll #       GREEK SMALL LETTER STIGMA
+03DD          ; Ll #       GREEK SMALL LETTER DIGAMMA
+03DF          ; Ll #       GREEK SMALL LETTER KOPPA
+03E1          ; Ll #       GREEK SMALL LETTER SAMPI
+03E3          ; Ll #       COPTIC SMALL LETTER SHEI
+03E5          ; Ll #       COPTIC SMALL LETTER FEI
+03E7          ; Ll #       COPTIC SMALL LETTER KHEI
+03E9          ; Ll #       COPTIC SMALL LETTER HORI
+03EB          ; Ll #       COPTIC SMALL LETTER GANGIA
+03ED          ; Ll #       COPTIC SMALL LETTER SHIMA
+03EF..03F3    ; Ll #   [5] COPTIC SMALL LETTER DEI..GREEK LETTER YOT
+03F5          ; Ll #       GREEK LUNATE EPSILON SYMBOL
+03F8          ; Ll #       GREEK SMALL LETTER SHO
+03FB..03FC    ; Ll #   [2] GREEK SMALL LETTER SAN..GREEK RHO WITH STROKE SYMBOL
+0430..045F    ; Ll #  [48] CYRILLIC SMALL LETTER A..CYRILLIC SMALL LETTER DZHE
+0461          ; Ll #       CYRILLIC SMALL LETTER OMEGA
+0463          ; Ll #       CYRILLIC SMALL LETTER YAT
+0465          ; Ll #       CYRILLIC SMALL LETTER IOTIFIED E
+0467          ; Ll #       CYRILLIC SMALL LETTER LITTLE YUS
+0469          ; Ll #       CYRILLIC SMALL LETTER IOTIFIED LITTLE YUS
+046B          ; Ll #       CYRILLIC SMALL LETTER BIG YUS
+046D          ; Ll #       CYRILLIC SMALL LETTER IOTIFIED BIG YUS
+046F          ; Ll #       CYRILLIC SMALL LETTER KSI
+0471          ; Ll #       CYRILLIC SMALL LETTER PSI
+0473          ; Ll #       CYRILLIC SMALL LETTER FITA
+0475          ; Ll #       CYRILLIC SMALL LETTER IZHITSA
+0477          ; Ll #       CYRILLIC SMALL LETTER IZHITSA WITH DOUBLE GRAVE ACCENT
+0479          ; Ll #       CYRILLIC SMALL LETTER UK
+047B          ; Ll #       CYRILLIC SMALL LETTER ROUND OMEGA
+047D          ; Ll #       CYRILLIC SMALL LETTER OMEGA WITH TITLO
+047F          ; Ll #       CYRILLIC SMALL LETTER OT
+0481          ; Ll #       CYRILLIC SMALL LETTER KOPPA
+048B          ; Ll #       CYRILLIC SMALL LETTER SHORT I WITH TAIL
+048D          ; Ll #       CYRILLIC SMALL LETTER SEMISOFT SIGN
+048F          ; Ll #       CYRILLIC SMALL LETTER ER WITH TICK
+0491          ; Ll #       CYRILLIC SMALL LETTER GHE WITH UPTURN
+0493          ; Ll #       CYRILLIC SMALL LETTER GHE WITH STROKE
+0495          ; Ll #       CYRILLIC SMALL LETTER GHE WITH MIDDLE HOOK
+0497          ; Ll #       CYRILLIC SMALL LETTER ZHE WITH DESCENDER
+0499          ; Ll #       CYRILLIC SMALL LETTER ZE WITH DESCENDER
+049B          ; Ll #       CYRILLIC SMALL LETTER KA WITH DESCENDER
+049D          ; Ll #       CYRILLIC SMALL LETTER KA WITH VERTICAL STROKE
+049F          ; Ll #       CYRILLIC SMALL LETTER KA WITH STROKE
+04A1          ; Ll #       CYRILLIC SMALL LETTER BASHKIR KA
+04A3          ; Ll #       CYRILLIC SMALL LETTER EN WITH DESCENDER
+04A5          ; Ll #       CYRILLIC SMALL LIGATURE EN GHE
+04A7          ; Ll #       CYRILLIC SMALL LETTER PE WITH MIDDLE HOOK
+04A9          ; Ll #       CYRILLIC SMALL LETTER ABKHASIAN HA
+04AB          ; Ll #       CYRILLIC SMALL LETTER ES WITH DESCENDER
+04AD          ; Ll #       CYRILLIC SMALL LETTER TE WITH DESCENDER
+04AF          ; Ll #       CYRILLIC SMALL LETTER STRAIGHT U
+04B1          ; Ll #       CYRILLIC SMALL LETTER STRAIGHT U WITH STROKE
+04B3          ; Ll #       CYRILLIC SMALL LETTER HA WITH DESCENDER
+04B5          ; Ll #       CYRILLIC SMALL LIGATURE TE TSE
+04B7          ; Ll #       CYRILLIC SMALL LETTER CHE WITH DESCENDER
+04B9          ; Ll #       CYRILLIC SMALL LETTER CHE WITH VERTICAL STROKE
+04BB          ; Ll #       CYRILLIC SMALL LETTER SHHA
+04BD          ; Ll #       CYRILLIC SMALL LETTER ABKHASIAN CHE
+04BF          ; Ll #       CYRILLIC SMALL LETTER ABKHASIAN CHE WITH DESCENDER
+04C2          ; Ll #       CYRILLIC SMALL LETTER ZHE WITH BREVE
+04C4          ; Ll #       CYRILLIC SMALL LETTER KA WITH HOOK
+04C6          ; Ll #       CYRILLIC SMALL LETTER EL WITH TAIL
+04C8          ; Ll #       CYRILLIC SMALL LETTER EN WITH HOOK
+04CA          ; Ll #       CYRILLIC SMALL LETTER EN WITH TAIL
+04CC          ; Ll #       CYRILLIC SMALL LETTER KHAKASSIAN CHE
+04CE..04CF    ; Ll #   [2] CYRILLIC SMALL LETTER EM WITH TAIL..CYRILLIC SMALL LETTER PALOCHKA
+04D1          ; Ll #       CYRILLIC SMALL LETTER A WITH BREVE
+04D3          ; Ll #       CYRILLIC SMALL LETTER A WITH DIAERESIS
+04D5          ; Ll #       CYRILLIC SMALL LIGATURE A IE
+04D7          ; Ll #       CYRILLIC SMALL LETTER IE WITH BREVE
+04D9          ; Ll #       CYRILLIC SMALL LETTER SCHWA
+04DB          ; Ll #       CYRILLIC SMALL LETTER SCHWA WITH DIAERESIS
+04DD          ; Ll #       CYRILLIC SMALL LETTER ZHE WITH DIAERESIS
+04DF          ; Ll #       CYRILLIC SMALL LETTER ZE WITH DIAERESIS
+04E1          ; Ll #       CYRILLIC SMALL LETTER ABKHASIAN DZE
+04E3          ; Ll #       CYRILLIC SMALL LETTER I WITH MACRON
+04E5          ; Ll #       CYRILLIC SMALL LETTER I WITH DIAERESIS
+04E7          ; Ll #       CYRILLIC SMALL LETTER O WITH DIAERESIS
+04E9          ; Ll #       CYRILLIC SMALL LETTER BARRED O
+04EB          ; Ll #       CYRILLIC SMALL LETTER BARRED O WITH DIAERESIS
+04ED          ; Ll #       CYRILLIC SMALL LETTER E WITH DIAERESIS
+04EF          ; Ll #       CYRILLIC SMALL LETTER U WITH MACRON
+04F1          ; Ll #       CYRILLIC SMALL LETTER U WITH DIAERESIS
+04F3          ; Ll #       CYRILLIC SMALL LETTER U WITH DOUBLE ACUTE
+04F5          ; Ll #       CYRILLIC SMALL LETTER CHE WITH DIAERESIS
+04F7          ; Ll #       CYRILLIC SMALL LETTER GHE WITH DESCENDER
+04F9          ; Ll #       CYRILLIC SMALL LETTER YERU WITH DIAERESIS
+04FB          ; Ll #       CYRILLIC SMALL LETTER GHE WITH STROKE AND HOOK
+04FD          ; Ll #       CYRILLIC SMALL LETTER HA WITH HOOK
+04FF          ; Ll #       CYRILLIC SMALL LETTER HA WITH STROKE
+0501          ; Ll #       CYRILLIC SMALL LETTER KOMI DE
+0503          ; Ll #       CYRILLIC SMALL LETTER KOMI DJE
+0505          ; Ll #       CYRILLIC SMALL LETTER KOMI ZJE
+0507          ; Ll #       CYRILLIC SMALL LETTER KOMI DZJE
+0509          ; Ll #       CYRILLIC SMALL LETTER KOMI LJE
+050B          ; Ll #       CYRILLIC SMALL LETTER KOMI NJE
+050D          ; Ll #       CYRILLIC SMALL LETTER KOMI SJE
+050F          ; Ll #       CYRILLIC SMALL LETTER KOMI TJE
+0511          ; Ll #       CYRILLIC SMALL LETTER REVERSED ZE
+0513          ; Ll #       CYRILLIC SMALL LETTER EL WITH HOOK
+0515          ; Ll #       CYRILLIC SMALL LETTER LHA
+0517          ; Ll #       CYRILLIC SMALL LETTER RHA
+0519          ; Ll #       CYRILLIC SMALL LETTER YAE
+051B          ; Ll #       CYRILLIC SMALL LETTER QA
+051D          ; Ll #       CYRILLIC SMALL LETTER WE
+051F          ; Ll #       CYRILLIC SMALL LETTER ALEUT KA
+0521          ; Ll #       CYRILLIC SMALL LETTER EL WITH MIDDLE HOOK
+0523          ; Ll #       CYRILLIC SMALL LETTER EN WITH MIDDLE HOOK
+0525          ; Ll #       CYRILLIC SMALL LETTER PE WITH DESCENDER
+0527          ; Ll #       CYRILLIC SMALL LETTER SHHA WITH DESCENDER
+0529          ; Ll #       CYRILLIC SMALL LETTER EN WITH LEFT HOOK
+052B          ; Ll #       CYRILLIC SMALL LETTER DZZHE
+052D          ; Ll #       CYRILLIC SMALL LETTER DCHE
+052F          ; Ll #       CYRILLIC SMALL LETTER EL WITH DESCENDER
+0560..0588    ; Ll #  [41] ARMENIAN SMALL LETTER TURNED AYB..ARMENIAN SMALL LETTER YI WITH STROKE
+10D0..10FA    ; Ll #  [43] GEORGIAN LETTER AN..GEORGIAN LETTER AIN
+10FD..10FF    ; Ll #   [3] GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL SIGN
+13F8..13FD    ; Ll #   [6] CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETTER MV
+1C80..1C88    ; Ll #   [9] CYRILLIC SMALL LETTER ROUNDED VE..CYRILLIC SMALL LETTER UNBLENDED UK
+1D00..1D2B    ; Ll #  [44] LATIN LETTER SMALL CAPITAL A..CYRILLIC LETTER SMALL CAPITAL EL
+1D6B..1D77    ; Ll #  [13] LATIN SMALL LETTER UE..LATIN SMALL LETTER TURNED G
+1D79..1D9A    ; Ll #  [34] LATIN SMALL LETTER INSULAR G..LATIN SMALL LETTER EZH WITH RETROFLEX HOOK
+1E01          ; Ll #       LATIN SMALL LETTER A WITH RING BELOW
+1E03          ; Ll #       LATIN SMALL LETTER B WITH DOT ABOVE
+1E05          ; Ll #       LATIN SMALL LETTER B WITH DOT BELOW
+1E07          ; Ll #       LATIN SMALL LETTER B WITH LINE BELOW
+1E09          ; Ll #       LATIN SMALL LETTER C WITH CEDILLA AND ACUTE
+1E0B          ; Ll #       LATIN SMALL LETTER D WITH DOT ABOVE
+1E0D          ; Ll #       LATIN SMALL LETTER D WITH DOT BELOW
+1E0F          ; Ll #       LATIN SMALL LETTER D WITH LINE BELOW
+1E11          ; Ll #       LATIN SMALL LETTER D WITH CEDILLA
+1E13          ; Ll #       LATIN SMALL LETTER D WITH CIRCUMFLEX BELOW
+1E15          ; Ll #       LATIN SMALL LETTER E WITH MACRON AND GRAVE
+1E17          ; Ll #       LATIN SMALL LETTER E WITH MACRON AND ACUTE
+1E19          ; Ll #       LATIN SMALL LETTER E WITH CIRCUMFLEX BELOW
+1E1B          ; Ll #       LATIN SMALL LETTER E WITH TILDE BELOW
+1E1D          ; Ll #       LATIN SMALL LETTER E WITH CEDILLA AND BREVE
+1E1F          ; Ll #       LATIN SMALL LETTER F WITH DOT ABOVE
+1E21          ; Ll #       LATIN SMALL LETTER G WITH MACRON
+1E23          ; Ll #       LATIN SMALL LETTER H WITH DOT ABOVE
+1E25          ; Ll #       LATIN SMALL LETTER H WITH DOT BELOW
+1E27          ; Ll #       LATIN SMALL LETTER H WITH DIAERESIS
+1E29          ; Ll #       LATIN SMALL LETTER H WITH CEDILLA
+1E2B          ; Ll #       LATIN SMALL LETTER H WITH BREVE BELOW
+1E2D          ; Ll #       LATIN SMALL LETTER I WITH TILDE BELOW
+1E2F          ; Ll #       LATIN SMALL LETTER I WITH DIAERESIS AND ACUTE
+1E31          ; Ll #       LATIN SMALL LETTER K WITH ACUTE
+1E33          ; Ll #       LATIN SMALL LETTER K WITH DOT BELOW
+1E35          ; Ll #       LATIN SMALL LETTER K WITH LINE BELOW
+1E37          ; Ll #       LATIN SMALL LETTER L WITH DOT BELOW
+1E39          ; Ll #       LATIN SMALL LETTER L WITH DOT BELOW AND MACRON
+1E3B          ; Ll #       LATIN SMALL LETTER L WITH LINE BELOW
+1E3D          ; Ll #       LATIN SMALL LETTER L WITH CIRCUMFLEX BELOW
+1E3F          ; Ll #       LATIN SMALL LETTER M WITH ACUTE
+1E41          ; Ll #       LATIN SMALL LETTER M WITH DOT ABOVE
+1E43          ; Ll #       LATIN SMALL LETTER M WITH DOT BELOW
+1E45          ; Ll #       LATIN SMALL LETTER N WITH DOT ABOVE
+1E47          ; Ll #       LATIN SMALL LETTER N WITH DOT BELOW
+1E49          ; Ll #       LATIN SMALL LETTER N WITH LINE BELOW
+1E4B          ; Ll #       LATIN SMALL LETTER N WITH CIRCUMFLEX BELOW
+1E4D          ; Ll #       LATIN SMALL LETTER O WITH TILDE AND ACUTE
+1E4F          ; Ll #       LATIN SMALL LETTER O WITH TILDE AND DIAERESIS
+1E51          ; Ll #       LATIN SMALL LETTER O WITH MACRON AND GRAVE
+1E53          ; Ll #       LATIN SMALL LETTER O WITH MACRON AND ACUTE
+1E55          ; Ll #       LATIN SMALL LETTER P WITH ACUTE
+1E57          ; Ll #       LATIN SMALL LETTER P WITH DOT ABOVE
+1E59          ; Ll #       LATIN SMALL LETTER R WITH DOT ABOVE
+1E5B          ; Ll #       LATIN SMALL LETTER R WITH DOT BELOW
+1E5D          ; Ll #       LATIN SMALL LETTER R WITH DOT BELOW AND MACRON
+1E5F          ; Ll #       LATIN SMALL LETTER R WITH LINE BELOW
+1E61          ; Ll #       LATIN SMALL LETTER S WITH DOT ABOVE
+1E63          ; Ll #       LATIN SMALL LETTER S WITH DOT BELOW
+1E65          ; Ll #       LATIN SMALL LETTER S WITH ACUTE AND DOT ABOVE
+1E67          ; Ll #       LATIN SMALL LETTER S WITH CARON AND DOT ABOVE
+1E69          ; Ll #       LATIN SMALL LETTER S WITH DOT BELOW AND DOT ABOVE
+1E6B          ; Ll #       LATIN SMALL LETTER T WITH DOT ABOVE
+1E6D          ; Ll #       LATIN SMALL LETTER T WITH DOT BELOW
+1E6F          ; Ll #       LATIN SMALL LETTER T WITH LINE BELOW
+1E71          ; Ll #       LATIN SMALL LETTER T WITH CIRCUMFLEX BELOW
+1E73          ; Ll #       LATIN SMALL LETTER U WITH DIAERESIS BELOW
+1E75          ; Ll #       LATIN SMALL LETTER U WITH TILDE BELOW
+1E77          ; Ll #       LATIN SMALL LETTER U WITH CIRCUMFLEX BELOW
+1E79          ; Ll #       LATIN SMALL LETTER U WITH TILDE AND ACUTE
+1E7B          ; Ll #       LATIN SMALL LETTER U WITH MACRON AND DIAERESIS
+1E7D          ; Ll #       LATIN SMALL LETTER V WITH TILDE
+1E7F          ; Ll #       LATIN SMALL LETTER V WITH DOT BELOW
+1E81          ; Ll #       LATIN SMALL LETTER W WITH GRAVE
+1E83          ; Ll #       LATIN SMALL LETTER W WITH ACUTE
+1E85          ; Ll #       LATIN SMALL LETTER W WITH DIAERESIS
+1E87          ; Ll #       LATIN SMALL LETTER W WITH DOT ABOVE
+1E89          ; Ll #       LATIN SMALL LETTER W WITH DOT BELOW
+1E8B          ; Ll #       LATIN SMALL LETTER X WITH DOT ABOVE
+1E8D          ; Ll #       LATIN SMALL LETTER X WITH DIAERESIS
+1E8F          ; Ll #       LATIN SMALL LETTER Y WITH DOT ABOVE
+1E91          ; Ll #       LATIN SMALL LETTER Z WITH CIRCUMFLEX
+1E93          ; Ll #       LATIN SMALL LETTER Z WITH DOT BELOW
+1E95..1E9D    ; Ll #   [9] LATIN SMALL LETTER Z WITH LINE BELOW..LATIN SMALL LETTER LONG S WITH HIGH STROKE
+1E9F          ; Ll #       LATIN SMALL LETTER DELTA
+1EA1          ; Ll #       LATIN SMALL LETTER A WITH DOT BELOW
+1EA3          ; Ll #       LATIN SMALL LETTER A WITH HOOK ABOVE
+1EA5          ; Ll #       LATIN SMALL LETTER A WITH CIRCUMFLEX AND ACUTE
+1EA7          ; Ll #       LATIN SMALL LETTER A WITH CIRCUMFLEX AND GRAVE
+1EA9          ; Ll #       LATIN SMALL LETTER A WITH CIRCUMFLEX AND HOOK ABOVE
+1EAB          ; Ll #       LATIN SMALL LETTER A WITH CIRCUMFLEX AND TILDE
+1EAD          ; Ll #       LATIN SMALL LETTER A WITH CIRCUMFLEX AND DOT BELOW
+1EAF          ; Ll #       LATIN SMALL LETTER A WITH BREVE AND ACUTE
+1EB1          ; Ll #       LATIN SMALL LETTER A WITH BREVE AND GRAVE
+1EB3          ; Ll #       LATIN SMALL LETTER A WITH BREVE AND HOOK ABOVE
+1EB5          ; Ll #       LATIN SMALL LETTER A WITH BREVE AND TILDE
+1EB7          ; Ll #       LATIN SMALL LETTER A WITH BREVE AND DOT BELOW
+1EB9          ; Ll #       LATIN SMALL LETTER E WITH DOT BELOW
+1EBB          ; Ll #       LATIN SMALL LETTER E WITH HOOK ABOVE
+1EBD          ; Ll #       LATIN SMALL LETTER E WITH TILDE
+1EBF          ; Ll #       LATIN SMALL LETTER E WITH CIRCUMFLEX AND ACUTE
+1EC1          ; Ll #       LATIN SMALL LETTER E WITH CIRCUMFLEX AND GRAVE
+1EC3          ; Ll #       LATIN SMALL LETTER E WITH CIRCUMFLEX AND HOOK ABOVE
+1EC5          ; Ll #       LATIN SMALL LETTER E WITH CIRCUMFLEX AND TILDE
+1EC7          ; Ll #       LATIN SMALL LETTER E WITH CIRCUMFLEX AND DOT BELOW
+1EC9          ; Ll #       LATIN SMALL LETTER I WITH HOOK ABOVE
+1ECB          ; Ll #       LATIN SMALL LETTER I WITH DOT BELOW
+1ECD          ; Ll #       LATIN SMALL LETTER O WITH DOT BELOW
+1ECF          ; Ll #       LATIN SMALL LETTER O WITH HOOK ABOVE
+1ED1          ; Ll #       LATIN SMALL LETTER O WITH CIRCUMFLEX AND ACUTE
+1ED3          ; Ll #       LATIN SMALL LETTER O WITH CIRCUMFLEX AND GRAVE
+1ED5          ; Ll #       LATIN SMALL LETTER O WITH CIRCUMFLEX AND HOOK ABOVE
+1ED7          ; Ll #       LATIN SMALL LETTER O WITH CIRCUMFLEX AND TILDE
+1ED9          ; Ll #       LATIN SMALL LETTER O WITH CIRCUMFLEX AND DOT BELOW
+1EDB          ; Ll #       LATIN SMALL LETTER O WITH HORN AND ACUTE
+1EDD          ; Ll #       LATIN SMALL LETTER O WITH HORN AND GRAVE
+1EDF          ; Ll #       LATIN SMALL LETTER O WITH HORN AND HOOK ABOVE
+1EE1          ; Ll #       LATIN SMALL LETTER O WITH HORN AND TILDE
+1EE3          ; Ll #       LATIN SMALL LETTER O WITH HORN AND DOT BELOW
+1EE5          ; Ll #       LATIN SMALL LETTER U WITH DOT BELOW
+1EE7          ; Ll #       LATIN SMALL LETTER U WITH HOOK ABOVE
+1EE9          ; Ll #       LATIN SMALL LETTER U WITH HORN AND ACUTE
+1EEB          ; Ll #       LATIN SMALL LETTER U WITH HORN AND GRAVE
+1EED          ; Ll #       LATIN SMALL LETTER U WITH HORN AND HOOK ABOVE
+1EEF          ; Ll #       LATIN SMALL LETTER U WITH HORN AND TILDE
+1EF1          ; Ll #       LATIN SMALL LETTER U WITH HORN AND DOT BELOW
+1EF3          ; Ll #       LATIN SMALL LETTER Y WITH GRAVE
+1EF5          ; Ll #       LATIN SMALL LETTER Y WITH DOT BELOW
+1EF7          ; Ll #       LATIN SMALL LETTER Y WITH HOOK ABOVE
+1EF9          ; Ll #       LATIN SMALL LETTER Y WITH TILDE
+1EFB          ; Ll #       LATIN SMALL LETTER MIDDLE-WELSH LL
+1EFD          ; Ll #       LATIN SMALL LETTER MIDDLE-WELSH V
+1EFF..1F07    ; Ll #   [9] LATIN SMALL LETTER Y WITH LOOP..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI
+1F10..1F15    ; Ll #   [6] GREEK SMALL LETTER EPSILON WITH PSILI..GREEK SMALL LETTER EPSILON WITH DASIA AND OXIA
+1F20..1F27    ; Ll #   [8] GREEK SMALL LETTER ETA WITH PSILI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI
+1F30..1F37    ; Ll #   [8] GREEK SMALL LETTER IOTA WITH PSILI..GREEK SMALL LETTER IOTA WITH DASIA AND PERISPOMENI
+1F40..1F45    ; Ll #   [6] GREEK SMALL LETTER OMICRON WITH PSILI..GREEK SMALL LETTER OMICRON WITH DASIA AND OXIA
+1F50..1F57    ; Ll #   [8] GREEK SMALL LETTER UPSILON WITH PSILI..GREEK SMALL LETTER UPSILON WITH DASIA AND PERISPOMENI
+1F60..1F67    ; Ll #   [8] GREEK SMALL LETTER OMEGA WITH PSILI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI
+1F70..1F7D    ; Ll #  [14] GREEK SMALL LETTER ALPHA WITH VARIA..GREEK SMALL LETTER OMEGA WITH OXIA
+1F80..1F87    ; Ll #   [8] GREEK SMALL LETTER ALPHA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ALPHA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1F90..1F97    ; Ll #   [8] GREEK SMALL LETTER ETA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1FA0..1FA7    ; Ll #   [8] GREEK SMALL LETTER OMEGA WITH PSILI AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH DASIA AND PERISPOMENI AND YPOGEGRAMMENI
+1FB0..1FB4    ; Ll #   [5] GREEK SMALL LETTER ALPHA WITH VRACHY..GREEK SMALL LETTER ALPHA WITH OXIA AND YPOGEGRAMMENI
+1FB6..1FB7    ; Ll #   [2] GREEK SMALL LETTER ALPHA WITH PERISPOMENI..GREEK SMALL LETTER ALPHA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FBE          ; Ll #       GREEK PROSGEGRAMMENI
+1FC2..1FC4    ; Ll #   [3] GREEK SMALL LETTER ETA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER ETA WITH OXIA AND YPOGEGRAMMENI
+1FC6..1FC7    ; Ll #   [2] GREEK SMALL LETTER ETA WITH PERISPOMENI..GREEK SMALL LETTER ETA WITH PERISPOMENI AND YPOGEGRAMMENI
+1FD0..1FD3    ; Ll #   [4] GREEK SMALL LETTER IOTA WITH VRACHY..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND OXIA
+1FD6..1FD7    ; Ll #   [2] GREEK SMALL LETTER IOTA WITH PERISPOMENI..GREEK SMALL LETTER IOTA WITH DIALYTIKA AND PERISPOMENI
+1FE0..1FE7    ; Ll #   [8] GREEK SMALL LETTER UPSILON WITH VRACHY..GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND PERISPOMENI
+1FF2..1FF4    ; Ll #   [3] GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENI..GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENI
+1FF6..1FF7    ; Ll #   [2] GREEK SMALL LETTER OMEGA WITH PERISPOMENI..GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENI
+210A          ; Ll #       SCRIPT SMALL G
+210E..210F    ; Ll #   [2] PLANCK CONSTANT..PLANCK CONSTANT OVER TWO PI
+2113          ; Ll #       SCRIPT SMALL L
+212F          ; Ll #       SCRIPT SMALL E
+2134          ; Ll #       SCRIPT SMALL O
+2139          ; Ll #       INFORMATION SOURCE
+213C..213D    ; Ll #   [2] DOUBLE-STRUCK SMALL PI..DOUBLE-STRUCK SMALL GAMMA
+2146..2149    ; Ll #   [4] DOUBLE-STRUCK ITALIC SMALL D..DOUBLE-STRUCK ITALIC SMALL J
+214E          ; Ll #       TURNED SMALL F
+2184          ; Ll #       LATIN SMALL LETTER REVERSED C
+2C30..2C5F    ; Ll #  [48] GLAGOLITIC SMALL LETTER AZU..GLAGOLITIC SMALL LETTER CAUDATE CHRIVI
+2C61          ; Ll #       LATIN SMALL LETTER L WITH DOUBLE BAR
+2C65..2C66    ; Ll #   [2] LATIN SMALL LETTER A WITH STROKE..LATIN SMALL LETTER T WITH DIAGONAL STROKE
+2C68          ; Ll #       LATIN SMALL LETTER H WITH DESCENDER
+2C6A          ; Ll #       LATIN SMALL LETTER K WITH DESCENDER
+2C6C          ; Ll #       LATIN SMALL LETTER Z WITH DESCENDER
+2C71          ; Ll #       LATIN SMALL LETTER V WITH RIGHT HOOK
+2C73..2C74    ; Ll #   [2] LATIN SMALL LETTER W WITH HOOK..LATIN SMALL LETTER V WITH CURL
+2C76..2C7B    ; Ll #   [6] LATIN SMALL LETTER HALF H..LATIN LETTER SMALL CAPITAL TURNED E
+2C81          ; Ll #       COPTIC SMALL LETTER ALFA
+2C83          ; Ll #       COPTIC SMALL LETTER VIDA
+2C85          ; Ll #       COPTIC SMALL LETTER GAMMA
+2C87          ; Ll #       COPTIC SMALL LETTER DALDA
+2C89          ; Ll #       COPTIC SMALL LETTER EIE
+2C8B          ; Ll #       COPTIC SMALL LETTER SOU
+2C8D          ; Ll #       COPTIC SMALL LETTER ZATA
+2C8F          ; Ll #       COPTIC SMALL LETTER HATE
+2C91          ; Ll #       COPTIC SMALL LETTER THETHE
+2C93          ; Ll #       COPTIC SMALL LETTER IAUDA
+2C95          ; Ll #       COPTIC SMALL LETTER KAPA
+2C97          ; Ll #       COPTIC SMALL LETTER LAULA
+2C99          ; Ll #       COPTIC SMALL LETTER MI
+2C9B          ; Ll #       COPTIC SMALL LETTER NI
+2C9D          ; Ll #       COPTIC SMALL LETTER KSI
+2C9F          ; Ll #       COPTIC SMALL LETTER O
+2CA1          ; Ll #       COPTIC SMALL LETTER PI
+2CA3          ; Ll #       COPTIC SMALL LETTER RO
+2CA5          ; Ll #       COPTIC SMALL LETTER SIMA
+2CA7          ; Ll #       COPTIC SMALL LETTER TAU
+2CA9          ; Ll #       COPTIC SMALL LETTER UA
+2CAB          ; Ll #       COPTIC SMALL LETTER FI
+2CAD          ; Ll #       COPTIC SMALL LETTER KHI
+2CAF          ; Ll #       COPTIC SMALL LETTER PSI
+2CB1          ; Ll #       COPTIC SMALL LETTER OOU
+2CB3          ; Ll #       COPTIC SMALL LETTER DIALECT-P ALEF
+2CB5          ; Ll #       COPTIC SMALL LETTER OLD COPTIC AIN
+2CB7          ; Ll #       COPTIC SMALL LETTER CRYPTOGRAMMIC EIE
+2CB9          ; Ll #       COPTIC SMALL LETTER DIALECT-P KAPA
+2CBB          ; Ll #       COPTIC SMALL LETTER DIALECT-P NI
+2CBD          ; Ll #       COPTIC SMALL LETTER CRYPTOGRAMMIC NI
+2CBF          ; Ll #       COPTIC SMALL LETTER OLD COPTIC OOU
+2CC1          ; Ll #       COPTIC SMALL LETTER SAMPI
+2CC3          ; Ll #       COPTIC SMALL LETTER CROSSED SHEI
+2CC5          ; Ll #       COPTIC SMALL LETTER OLD COPTIC SHEI
+2CC7          ; Ll #       COPTIC SMALL LETTER OLD COPTIC ESH
+2CC9          ; Ll #       COPTIC SMALL LETTER AKHMIMIC KHEI
+2CCB          ; Ll #       COPTIC SMALL LETTER DIALECT-P HORI
+2CCD          ; Ll #       COPTIC SMALL LETTER OLD COPTIC HORI
+2CCF          ; Ll #       COPTIC SMALL LETTER OLD COPTIC HA
+2CD1          ; Ll #       COPTIC SMALL LETTER L-SHAPED HA
+2CD3          ; Ll #       COPTIC SMALL LETTER OLD COPTIC HEI
+2CD5          ; Ll #       COPTIC SMALL LETTER OLD COPTIC HAT
+2CD7          ; Ll #       COPTIC SMALL LETTER OLD COPTIC GANGIA
+2CD9          ; Ll #       COPTIC SMALL LETTER OLD COPTIC DJA
+2CDB          ; Ll #       COPTIC SMALL LETTER OLD COPTIC SHIMA
+2CDD          ; Ll #       COPTIC SMALL LETTER OLD NUBIAN SHIMA
+2CDF          ; Ll #       COPTIC SMALL LETTER OLD NUBIAN NGI
+2CE1          ; Ll #       COPTIC SMALL LETTER OLD NUBIAN NYI
+2CE3..2CE4    ; Ll #   [2] COPTIC SMALL LETTER OLD NUBIAN WAU..COPTIC SYMBOL KAI
+2CEC          ; Ll #       COPTIC SMALL LETTER CRYPTOGRAMMIC SHEI
+2CEE          ; Ll #       COPTIC SMALL LETTER CRYPTOGRAMMIC GANGIA
+2CF3          ; Ll #       COPTIC SMALL LETTER BOHAIRIC KHEI
+2D00..2D25    ; Ll #  [38] GEORGIAN SMALL LETTER AN..GEORGIAN SMALL LETTER HOE
+2D27          ; Ll #       GEORGIAN SMALL LETTER YN
+2D2D          ; Ll #       GEORGIAN SMALL LETTER AEN
+A641          ; Ll #       CYRILLIC SMALL LETTER ZEMLYA
+A643          ; Ll #       CYRILLIC SMALL LETTER DZELO
+A645          ; Ll #       CYRILLIC SMALL LETTER REVERSED DZE
+A647          ; Ll #       CYRILLIC SMALL LETTER IOTA
+A649          ; Ll #       CYRILLIC SMALL LETTER DJERV
+A64B          ; Ll #       CYRILLIC SMALL LETTER MONOGRAPH UK
+A64D          ; Ll #       CYRILLIC SMALL LETTER BROAD OMEGA
+A64F          ; Ll #       CYRILLIC SMALL LETTER NEUTRAL YER
+A651          ; Ll #       CYRILLIC SMALL LETTER YERU WITH BACK YER
+A653          ; Ll #       CYRILLIC SMALL LETTER IOTIFIED YAT
+A655          ; Ll #       CYRILLIC SMALL LETTER REVERSED YU
+A657          ; Ll #       CYRILLIC SMALL LETTER IOTIFIED A
+A659          ; Ll #       CYRILLIC SMALL LETTER CLOSED LITTLE YUS
+A65B          ; Ll #       CYRILLIC SMALL LETTER BLENDED YUS
+A65D          ; Ll #       CYRILLIC SMALL LETTER IOTIFIED CLOSED LITTLE YUS
+A65F          ; Ll #       CYRILLIC SMALL LETTER YN
+A661          ; Ll #       CYRILLIC SMALL LETTER REVERSED TSE
+A663          ; Ll #       CYRILLIC SMALL LETTER SOFT DE
+A665          ; Ll #       CYRILLIC SMALL LETTER SOFT EL
+A667          ; Ll #       CYRILLIC SMALL LETTER SOFT EM
+A669          ; Ll #       CYRILLIC SMALL LETTER MONOCULAR O
+A66B          ; Ll #       CYRILLIC SMALL LETTER BINOCULAR O
+A66D          ; Ll #       CYRILLIC SMALL LETTER DOUBLE MONOCULAR O
+A681          ; Ll #       CYRILLIC SMALL LETTER DWE
+A683          ; Ll #       CYRILLIC SMALL LETTER DZWE
+A685          ; Ll #       CYRILLIC SMALL LETTER ZHWE
+A687          ; Ll #       CYRILLIC SMALL LETTER CCHE
+A689          ; Ll #       CYRILLIC SMALL LETTER DZZE
+A68B          ; Ll #       CYRILLIC SMALL LETTER TE WITH MIDDLE HOOK
+A68D          ; Ll #       CYRILLIC SMALL LETTER TWE
+A68F          ; Ll #       CYRILLIC SMALL LETTER TSWE
+A691          ; Ll #       CYRILLIC SMALL LETTER TSSE
+A693          ; Ll #       CYRILLIC SMALL LETTER TCHE
+A695          ; Ll #       CYRILLIC SMALL LETTER HWE
+A697          ; Ll #       CYRILLIC SMALL LETTER SHWE
+A699          ; Ll #       CYRILLIC SMALL LETTER DOUBLE O
+A69B          ; Ll #       CYRILLIC SMALL LETTER CROSSED O
+A723          ; Ll #       LATIN SMALL LETTER EGYPTOLOGICAL ALEF
+A725          ; Ll #       LATIN SMALL LETTER EGYPTOLOGICAL AIN
+A727          ; Ll #       LATIN SMALL LETTER HENG
+A729          ; Ll #       LATIN SMALL LETTER TZ
+A72B          ; Ll #       LATIN SMALL LETTER TRESILLO
+A72D          ; Ll #       LATIN SMALL LETTER CUATRILLO
+A72F..A731    ; Ll #   [3] LATIN SMALL LETTER CUATRILLO WITH COMMA..LATIN LETTER SMALL CAPITAL S
+A733          ; Ll #       LATIN SMALL LETTER AA
+A735          ; Ll #       LATIN SMALL LETTER AO
+A737          ; Ll #       LATIN SMALL LETTER AU
+A739          ; Ll #       LATIN SMALL LETTER AV
+A73B          ; Ll #       LATIN SMALL LETTER AV WITH HORIZONTAL BAR
+A73D          ; Ll #       LATIN SMALL LETTER AY
+A73F          ; Ll #       LATIN SMALL LETTER REVERSED C WITH DOT
+A741          ; Ll #       LATIN SMALL LETTER K WITH STROKE
+A743          ; Ll #       LATIN SMALL LETTER K WITH DIAGONAL STROKE
+A745          ; Ll #       LATIN SMALL LETTER K WITH STROKE AND DIAGONAL STROKE
+A747          ; Ll #       LATIN SMALL LETTER BROKEN L
+A749          ; Ll #       LATIN SMALL LETTER L WITH HIGH STROKE
+A74B          ; Ll #       LATIN SMALL LETTER O WITH LONG STROKE OVERLAY
+A74D          ; Ll #       LATIN SMALL LETTER O WITH LOOP
+A74F          ; Ll #       LATIN SMALL LETTER OO
+A751          ; Ll #       LATIN SMALL LETTER P WITH STROKE THROUGH DESCENDER
+A753          ; Ll #       LATIN SMALL LETTER P WITH FLOURISH
+A755          ; Ll #       LATIN SMALL LETTER P WITH SQUIRREL TAIL
+A757          ; Ll #       LATIN SMALL LETTER Q WITH STROKE THROUGH DESCENDER
+A759          ; Ll #       LATIN SMALL LETTER Q WITH DIAGONAL STROKE
+A75B          ; Ll #       LATIN SMALL LETTER R ROTUNDA
+A75D          ; Ll #       LATIN SMALL LETTER RUM ROTUNDA
+A75F          ; Ll #       LATIN SMALL LETTER V WITH DIAGONAL STROKE
+A761          ; Ll #       LATIN SMALL LETTER VY
+A763          ; Ll #       LATIN SMALL LETTER VISIGOTHIC Z
+A765          ; Ll #       LATIN SMALL LETTER THORN WITH STROKE
+A767          ; Ll #       LATIN SMALL LETTER THORN WITH STROKE THROUGH DESCENDER
+A769          ; Ll #       LATIN SMALL LETTER VEND
+A76B          ; Ll #       LATIN SMALL LETTER ET
+A76D          ; Ll #       LATIN SMALL LETTER IS
+A76F          ; Ll #       LATIN SMALL LETTER CON
+A771..A778    ; Ll #   [8] LATIN SMALL LETTER DUM..LATIN SMALL LETTER UM
+A77A          ; Ll #       LATIN SMALL LETTER INSULAR D
+A77C          ; Ll #       LATIN SMALL LETTER INSULAR F
+A77F          ; Ll #       LATIN SMALL LETTER TURNED INSULAR G
+A781          ; Ll #       LATIN SMALL LETTER TURNED L
+A783          ; Ll #       LATIN SMALL LETTER INSULAR R
+A785          ; Ll #       LATIN SMALL LETTER INSULAR S
+A787          ; Ll #       LATIN SMALL LETTER INSULAR T
+A78C          ; Ll #       LATIN SMALL LETTER SALTILLO
+A78E          ; Ll #       LATIN SMALL LETTER L WITH RETROFLEX HOOK AND BELT
+A791          ; Ll #       LATIN SMALL LETTER N WITH DESCENDER
+A793..A795    ; Ll #   [3] LATIN SMALL LETTER C WITH BAR..LATIN SMALL LETTER H WITH PALATAL HOOK
+A797          ; Ll #       LATIN SMALL LETTER B WITH FLOURISH
+A799          ; Ll #       LATIN SMALL LETTER F WITH STROKE
+A79B          ; Ll #       LATIN SMALL LETTER VOLAPUK AE
+A79D          ; Ll #       LATIN SMALL LETTER VOLAPUK OE
+A79F          ; Ll #       LATIN SMALL LETTER VOLAPUK UE
+A7A1          ; Ll #       LATIN SMALL LETTER G WITH OBLIQUE STROKE
+A7A3          ; Ll #       LATIN SMALL LETTER K WITH OBLIQUE STROKE
+A7A5          ; Ll #       LATIN SMALL LETTER N WITH OBLIQUE STROKE
+A7A7          ; Ll #       LATIN SMALL LETTER R WITH OBLIQUE STROKE
+A7A9          ; Ll #       LATIN SMALL LETTER S WITH OBLIQUE STROKE
+A7AF          ; Ll #       LATIN LETTER SMALL CAPITAL Q
+A7B5          ; Ll #       LATIN SMALL LETTER BETA
+A7B7          ; Ll #       LATIN SMALL LETTER OMEGA
+A7B9          ; Ll #       LATIN SMALL LETTER U WITH STROKE
+A7BB          ; Ll #       LATIN SMALL LETTER GLOTTAL A
+A7BD          ; Ll #       LATIN SMALL LETTER GLOTTAL I
+A7BF          ; Ll #       LATIN SMALL LETTER GLOTTAL U
+A7C1          ; Ll #       LATIN SMALL LETTER OLD POLISH O
+A7C3          ; Ll #       LATIN SMALL LETTER ANGLICANA W
+A7C8          ; Ll #       LATIN SMALL LETTER D WITH SHORT STROKE OVERLAY
+A7CA          ; Ll #       LATIN SMALL LETTER S WITH SHORT STROKE OVERLAY
+A7D1          ; Ll #       LATIN SMALL LETTER CLOSED INSULAR G
+A7D3          ; Ll #       LATIN SMALL LETTER DOUBLE THORN
+A7D5          ; Ll #       LATIN SMALL LETTER DOUBLE WYNN
+A7D7          ; Ll #       LATIN SMALL LETTER MIDDLE SCOTS S
+A7D9          ; Ll #       LATIN SMALL LETTER SIGMOID S
+A7F6          ; Ll #       LATIN SMALL LETTER REVERSED HALF H
+A7FA          ; Ll #       LATIN LETTER SMALL CAPITAL TURNED M
+AB30..AB5A    ; Ll #  [43] LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL LETTER Y WITH SHORT RIGHT LEG
+AB60..AB68    ; Ll #   [9] LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LETTER TURNED R WITH MIDDLE TILDE
+AB70..ABBF    ; Ll #  [80] CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTER YA
+FB00..FB06    ; Ll #   [7] LATIN SMALL LIGATURE FF..LATIN SMALL LIGATURE ST
+FB13..FB17    ; Ll #   [5] ARMENIAN SMALL LIGATURE MEN NOW..ARMENIAN SMALL LIGATURE MEN XEH
+FF41..FF5A    ; Ll #  [26] FULLWIDTH LATIN SMALL LETTER A..FULLWIDTH LATIN SMALL LETTER Z
+10428..1044F  ; Ll #  [40] DESERET SMALL LETTER LONG I..DESERET SMALL LETTER EW
+104D8..104FB  ; Ll #  [36] OSAGE SMALL LETTER A..OSAGE SMALL LETTER ZHA
+10597..105A1  ; Ll #  [11] VITHKUQI SMALL LETTER A..VITHKUQI SMALL LETTER GA
+105A3..105B1  ; Ll #  [15] VITHKUQI SMALL LETTER HA..VITHKUQI SMALL LETTER RE
+105B3..105B9  ; Ll #   [7] VITHKUQI SMALL LETTER SE..VITHKUQI SMALL LETTER XE
+105BB..105BC  ; Ll #   [2] VITHKUQI SMALL LETTER Y..VITHKUQI SMALL LETTER ZE
+10CC0..10CF2  ; Ll #  [51] OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN SMALL LETTER US
+118C0..118DF  ; Ll #  [32] WARANG CITI SMALL LETTER NGAA..WARANG CITI SMALL LETTER VIYO
+16E60..16E7F  ; Ll #  [32] MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL LETTER Y
+1D41A..1D433  ; Ll #  [26] MATHEMATICAL BOLD SMALL A..MATHEMATICAL BOLD SMALL Z
+1D44E..1D454  ; Ll #   [7] MATHEMATICAL ITALIC SMALL A..MATHEMATICAL ITALIC SMALL G
+1D456..1D467  ; Ll #  [18] MATHEMATICAL ITALIC SMALL I..MATHEMATICAL ITALIC SMALL Z
+1D482..1D49B  ; Ll #  [26] MATHEMATICAL BOLD ITALIC SMALL A..MATHEMATICAL BOLD ITALIC SMALL Z
+1D4B6..1D4B9  ; Ll #   [4] MATHEMATICAL SCRIPT SMALL A..MATHEMATICAL SCRIPT SMALL D
+1D4BB         ; Ll #       MATHEMATICAL SCRIPT SMALL F
+1D4BD..1D4C3  ; Ll #   [7] MATHEMATICAL SCRIPT SMALL H..MATHEMATICAL SCRIPT SMALL N
+1D4C5..1D4CF  ; Ll #  [11] MATHEMATICAL SCRIPT SMALL P..MATHEMATICAL SCRIPT SMALL Z
+1D4EA..1D503  ; Ll #  [26] MATHEMATICAL BOLD SCRIPT SMALL A..MATHEMATICAL BOLD SCRIPT SMALL Z
+1D51E..1D537  ; Ll #  [26] MATHEMATICAL FRAKTUR SMALL A..MATHEMATICAL FRAKTUR SMALL Z
+1D552..1D56B  ; Ll #  [26] MATHEMATICAL DOUBLE-STRUCK SMALL A..MATHEMATICAL DOUBLE-STRUCK SMALL Z
+1D586..1D59F  ; Ll #  [26] MATHEMATICAL BOLD FRAKTUR SMALL A..MATHEMATICAL BOLD FRAKTUR SMALL Z
+1D5BA..1D5D3  ; Ll #  [26] MATHEMATICAL SANS-SERIF SMALL A..MATHEMATICAL SANS-SERIF SMALL Z
+1D5EE..1D607  ; Ll #  [26] MATHEMATICAL SANS-SERIF BOLD SMALL A..MATHEMATICAL SANS-SERIF BOLD SMALL Z
+1D622..1D63B  ; Ll #  [26] MATHEMATICAL SANS-SERIF ITALIC SMALL A..MATHEMATICAL SANS-SERIF ITALIC SMALL Z
+1D656..1D66F  ; Ll #  [26] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL A..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL Z
+1D68A..1D6A5  ; Ll #  [28] MATHEMATICAL MONOSPACE SMALL A..MATHEMATICAL ITALIC SMALL DOTLESS J
+1D6C2..1D6DA  ; Ll #  [25] MATHEMATICAL BOLD SMALL ALPHA..MATHEMATICAL BOLD SMALL OMEGA
+1D6DC..1D6E1  ; Ll #   [6] MATHEMATICAL BOLD EPSILON SYMBOL..MATHEMATICAL BOLD PI SYMBOL
+1D6FC..1D714  ; Ll #  [25] MATHEMATICAL ITALIC SMALL ALPHA..MATHEMATICAL ITALIC SMALL OMEGA
+1D716..1D71B  ; Ll #   [6] MATHEMATICAL ITALIC EPSILON SYMBOL..MATHEMATICAL ITALIC PI SYMBOL
+1D736..1D74E  ; Ll #  [25] MATHEMATICAL BOLD ITALIC SMALL ALPHA..MATHEMATICAL BOLD ITALIC SMALL OMEGA
+1D750..1D755  ; Ll #   [6] MATHEMATICAL BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL BOLD ITALIC PI SYMBOL
+1D770..1D788  ; Ll #  [25] MATHEMATICAL SANS-SERIF BOLD SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD SMALL OMEGA
+1D78A..1D78F  ; Ll #   [6] MATHEMATICAL SANS-SERIF BOLD EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD PI SYMBOL
+1D7AA..1D7C2  ; Ll #  [25] MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL ALPHA..MATHEMATICAL SANS-SERIF BOLD ITALIC SMALL OMEGA
+1D7C4..1D7C9  ; Ll #   [6] MATHEMATICAL SANS-SERIF BOLD ITALIC EPSILON SYMBOL..MATHEMATICAL SANS-SERIF BOLD ITALIC PI SYMBOL
+1D7CB         ; Ll #       MATHEMATICAL BOLD SMALL DIGAMMA
+1DF00..1DF09  ; Ll #  [10] LATIN SMALL LETTER FENG DIGRAPH WITH TRILL..LATIN SMALL LETTER T WITH HOOK AND RETROFLEX HOOK
+1DF0B..1DF1E  ; Ll #  [20] LATIN SMALL LETTER ESH WITH DOUBLE BAR..LATIN SMALL LETTER S WITH CURL
+1DF25..1DF2A  ; Ll #   [6] LATIN SMALL LETTER D WITH MID-HEIGHT LEFT HOOK..LATIN SMALL LETTER T WITH MID-HEIGHT LEFT HOOK
+1E922..1E943  ; Ll #  [34] ADLAM SMALL LETTER ALIF..ADLAM SMALL LETTER SHA
+
+# Total code points: 2233
+
+# ================================================
+
+# General_Category=Titlecase_Letter
+
+01C5          ; Lt #       LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON
+01C8          ; Lt #       LATIN CAPITAL LETTER L WITH SMALL LETTER J
+01CB          ; Lt #       LATIN CAPITAL LETTER N WITH SMALL LETTER J
+01F2          ; Lt #       LATIN CAPITAL LETTER D WITH SMALL LETTER Z
+1F88..1F8F    ; Lt #   [8] GREEK CAPITAL LETTER ALPHA WITH PSILI AND PROSGEGRAMMENI..GREEK CAPITAL LETTER ALPHA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1F98..1F9F    ; Lt #   [8] GREEK CAPITAL LETTER ETA WITH PSILI AND PROSGEGRAMMENI..GREEK CAPITAL LETTER ETA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1FA8..1FAF    ; Lt #   [8] GREEK CAPITAL LETTER OMEGA WITH PSILI AND PROSGEGRAMMENI..GREEK CAPITAL LETTER OMEGA WITH DASIA AND PERISPOMENI AND PROSGEGRAMMENI
+1FBC          ; Lt #       GREEK CAPITAL LETTER ALPHA WITH PROSGEGRAMMENI
+1FCC          ; Lt #       GREEK CAPITAL LETTER ETA WITH PROSGEGRAMMENI
+1FFC          ; Lt #       GREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENI
+
+# Total code points: 31
+
+# ================================================
+
+# General_Category=Modifier_Letter
+
+02B0..02C1    ; Lm #  [18] MODIFIER LETTER SMALL H..MODIFIER LETTER REVERSED GLOTTAL STOP
+02C6..02D1    ; Lm #  [12] MODIFIER LETTER CIRCUMFLEX ACCENT..MODIFIER LETTER HALF TRIANGULAR COLON
+02E0..02E4    ; Lm #   [5] MODIFIER LETTER SMALL GAMMA..MODIFIER LETTER SMALL REVERSED GLOTTAL STOP
+02EC          ; Lm #       MODIFIER LETTER VOICING
+02EE          ; Lm #       MODIFIER LETTER DOUBLE APOSTROPHE
+0374          ; Lm #       GREEK NUMERAL SIGN
+037A          ; Lm #       GREEK YPOGEGRAMMENI
+0559          ; Lm #       ARMENIAN MODIFIER LETTER LEFT HALF RING
+0640          ; Lm #       ARABIC TATWEEL
+06E5..06E6    ; Lm #   [2] ARABIC SMALL WAW..ARABIC SMALL YEH
+07F4..07F5    ; Lm #   [2] NKO HIGH TONE APOSTROPHE..NKO LOW TONE APOSTROPHE
+07FA          ; Lm #       NKO LAJANYALAN
+081A          ; Lm #       SAMARITAN MODIFIER LETTER EPENTHETIC YUT
+0824          ; Lm #       SAMARITAN MODIFIER LETTER SHORT A
+0828          ; Lm #       SAMARITAN MODIFIER LETTER I
+08C9          ; Lm #       ARABIC SMALL FARSI YEH
+0971          ; Lm #       DEVANAGARI SIGN HIGH SPACING DOT
+0E46          ; Lm #       THAI CHARACTER MAIYAMOK
+0EC6          ; Lm #       LAO KO LA
+10FC          ; Lm #       MODIFIER LETTER GEORGIAN NAR
+17D7          ; Lm #       KHMER SIGN LEK TOO
+1843          ; Lm #       MONGOLIAN LETTER TODO LONG VOWEL SIGN
+1AA7          ; Lm #       TAI THAM SIGN MAI YAMOK
+1C78..1C7D    ; Lm #   [6] OL CHIKI MU TTUDDAG..OL CHIKI AHAD
+1D2C..1D6A    ; Lm #  [63] MODIFIER LETTER CAPITAL A..GREEK SUBSCRIPT SMALL LETTER CHI
+1D78          ; Lm #       MODIFIER LETTER CYRILLIC EN
+1D9B..1DBF    ; Lm #  [37] MODIFIER LETTER SMALL TURNED ALPHA..MODIFIER LETTER SMALL THETA
+2071          ; Lm #       SUPERSCRIPT LATIN SMALL LETTER I
+207F          ; Lm #       SUPERSCRIPT LATIN SMALL LETTER N
+2090..209C    ; Lm #  [13] LATIN SUBSCRIPT SMALL LETTER A..LATIN SUBSCRIPT SMALL LETTER T
+2C7C..2C7D    ; Lm #   [2] LATIN SUBSCRIPT SMALL LETTER J..MODIFIER LETTER CAPITAL V
+2D6F          ; Lm #       TIFINAGH MODIFIER LETTER LABIALIZATION MARK
+2E2F          ; Lm #       VERTICAL TILDE
+3005          ; Lm #       IDEOGRAPHIC ITERATION MARK
+3031..3035    ; Lm #   [5] VERTICAL KANA REPEAT MARK..VERTICAL KANA REPEAT MARK LOWER HALF
+303B          ; Lm #       VERTICAL IDEOGRAPHIC ITERATION MARK
+309D..309E    ; Lm #   [2] HIRAGANA ITERATION MARK..HIRAGANA VOICED ITERATION MARK
+30FC..30FE    ; Lm #   [3] KATAKANA-HIRAGANA PROLONGED SOUND MARK..KATAKANA VOICED ITERATION MARK
+A015          ; Lm #       YI SYLLABLE WU
+A4F8..A4FD    ; Lm #   [6] LISU LETTER TONE MYA TI..LISU LETTER TONE MYA JEU
+A60C          ; Lm #       VAI SYLLABLE LENGTHENER
+A67F          ; Lm #       CYRILLIC PAYEROK
+A69C..A69D    ; Lm #   [2] MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER LETTER CYRILLIC SOFT SIGN
+A717..A71F    ; Lm #   [9] MODIFIER LETTER DOT VERTICAL BAR..MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
+A770          ; Lm #       MODIFIER LETTER US
+A788          ; Lm #       MODIFIER LETTER LOW CIRCUMFLEX ACCENT
+A7F2..A7F4    ; Lm #   [3] MODIFIER LETTER CAPITAL C..MODIFIER LETTER CAPITAL Q
+A7F8..A7F9    ; Lm #   [2] MODIFIER LETTER CAPITAL H WITH STROKE..MODIFIER LETTER SMALL LIGATURE OE
+A9CF          ; Lm #       JAVANESE PANGRANGKEP
+A9E6          ; Lm #       MYANMAR MODIFIER LETTER SHAN REDUPLICATION
+AA70          ; Lm #       MYANMAR MODIFIER LETTER KHAMTI REDUPLICATION
+AADD          ; Lm #       TAI VIET SYMBOL SAM
+AAF3..AAF4    ; Lm #   [2] MEETEI MAYEK SYLLABLE REPETITION MARK..MEETEI MAYEK WORD REPETITION MARK
+AB5C..AB5F    ; Lm #   [4] MODIFIER LETTER SMALL HENG..MODIFIER LETTER SMALL U WITH LEFT HOOK
+AB69          ; Lm #       MODIFIER LETTER SMALL TURNED W
+FF70          ; Lm #       HALFWIDTH KATAKANA-HIRAGANA PROLONGED SOUND MARK
+FF9E..FF9F    ; Lm #   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+10780..10785  ; Lm #   [6] MODIFIER LETTER SMALL CAPITAL AA..MODIFIER LETTER SMALL B WITH HOOK
+10787..107B0  ; Lm #  [42] MODIFIER LETTER SMALL DZ DIGRAPH..MODIFIER LETTER SMALL V WITH RIGHT HOOK
+107B2..107BA  ; Lm #   [9] MODIFIER LETTER SMALL CAPITAL Y..MODIFIER LETTER SMALL S WITH CURL
+16B40..16B43  ; Lm #   [4] PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN IB YAM
+16F93..16F9F  ; Lm #  [13] MIAO LETTER TONE-2..MIAO LETTER REFORMED TONE-8
+16FE0..16FE1  ; Lm #   [2] TANGUT ITERATION MARK..NUSHU ITERATION MARK
+16FE3         ; Lm #       OLD CHINESE ITERATION MARK
+1AFF0..1AFF3  ; Lm #   [4] KATAKANA LETTER MINNAN TONE-2..KATAKANA LETTER MINNAN TONE-5
+1AFF5..1AFFB  ; Lm #   [7] KATAKANA LETTER MINNAN TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-5
+1AFFD..1AFFE  ; Lm #   [2] KATAKANA LETTER MINNAN NASALIZED TONE-7..KATAKANA LETTER MINNAN NASALIZED TONE-8
+1E030..1E06D  ; Lm #  [62] MODIFIER LETTER CYRILLIC SMALL A..MODIFIER LETTER CYRILLIC SMALL STRAIGHT U WITH STROKE
+1E137..1E13D  ; Lm #   [7] NYIAKENG PUACHUE HMONG SIGN FOR PERSON..NYIAKENG PUACHUE HMONG SYLLABLE LENGTHENER
+1E4EB         ; Lm #       NAG MUNDARI SIGN OJOD
+1E94B         ; Lm #       ADLAM NASALIZATION MARK
+
+# Total code points: 397
+
+# ================================================
+
+# General_Category=Other_Letter
+
+00AA          ; Lo #       FEMININE ORDINAL INDICATOR
+00BA          ; Lo #       MASCULINE ORDINAL INDICATOR
+01BB          ; Lo #       LATIN LETTER TWO WITH STROKE
+01C0..01C3    ; Lo #   [4] LATIN LETTER DENTAL CLICK..LATIN LETTER RETROFLEX CLICK
+0294          ; Lo #       LATIN LETTER GLOTTAL STOP
+05D0..05EA    ; Lo #  [27] HEBREW LETTER ALEF..HEBREW LETTER TAV
+05EF..05F2    ; Lo #   [4] HEBREW YOD TRIANGLE..HEBREW LIGATURE YIDDISH DOUBLE YOD
+0620..063F    ; Lo #  [32] ARABIC LETTER KASHMIRI YEH..ARABIC LETTER FARSI YEH WITH THREE DOTS ABOVE
+0641..064A    ; Lo #  [10] ARABIC LETTER FEH..ARABIC LETTER YEH
+066E..066F    ; Lo #   [2] ARABIC LETTER DOTLESS BEH..ARABIC LETTER DOTLESS QAF
+0671..06D3    ; Lo #  [99] ARABIC LETTER ALEF WASLA..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE
+06D5          ; Lo #       ARABIC LETTER AE
+06EE..06EF    ; Lo #   [2] ARABIC LETTER DAL WITH INVERTED V..ARABIC LETTER REH WITH INVERTED V
+06FA..06FC    ; Lo #   [3] ARABIC LETTER SHEEN WITH DOT BELOW..ARABIC LETTER GHAIN WITH DOT BELOW
+06FF          ; Lo #       ARABIC LETTER HEH WITH INVERTED V
+0710          ; Lo #       SYRIAC LETTER ALAPH
+0712..072F    ; Lo #  [30] SYRIAC LETTER BETH..SYRIAC LETTER PERSIAN DHALATH
+074D..07A5    ; Lo #  [89] SYRIAC LETTER SOGDIAN ZHAIN..THAANA LETTER WAAVU
+07B1          ; Lo #       THAANA LETTER NAA
+07CA..07EA    ; Lo #  [33] NKO LETTER A..NKO LETTER JONA RA
+0800..0815    ; Lo #  [22] SAMARITAN LETTER ALAF..SAMARITAN LETTER TAAF
+0840..0858    ; Lo #  [25] MANDAIC LETTER HALQA..MANDAIC LETTER AIN
+0860..086A    ; Lo #  [11] SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MALAYALAM SSA
+0870..0887    ; Lo #  [24] ARABIC LETTER ALEF WITH ATTACHED FATHA..ARABIC BASELINE ROUND DOT
+0889..088E    ; Lo #   [6] ARABIC LETTER NOON WITH INVERTED SMALL V..ARABIC VERTICAL TAIL
+08A0..08C8    ; Lo #  [41] ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC LETTER GRAF
+0904..0939    ; Lo #  [54] DEVANAGARI LETTER SHORT A..DEVANAGARI LETTER HA
+093D          ; Lo #       DEVANAGARI SIGN AVAGRAHA
+0950          ; Lo #       DEVANAGARI OM
+0958..0961    ; Lo #  [10] DEVANAGARI LETTER QA..DEVANAGARI LETTER VOCALIC LL
+0972..0980    ; Lo #  [15] DEVANAGARI LETTER CANDRA A..BENGALI ANJI
+0985..098C    ; Lo #   [8] BENGALI LETTER A..BENGALI LETTER VOCALIC L
+098F..0990    ; Lo #   [2] BENGALI LETTER E..BENGALI LETTER AI
+0993..09A8    ; Lo #  [22] BENGALI LETTER O..BENGALI LETTER NA
+09AA..09B0    ; Lo #   [7] BENGALI LETTER PA..BENGALI LETTER RA
+09B2          ; Lo #       BENGALI LETTER LA
+09B6..09B9    ; Lo #   [4] BENGALI LETTER SHA..BENGALI LETTER HA
+09BD          ; Lo #       BENGALI SIGN AVAGRAHA
+09CE          ; Lo #       BENGALI LETTER KHANDA TA
+09DC..09DD    ; Lo #   [2] BENGALI LETTER RRA..BENGALI LETTER RHA
+09DF..09E1    ; Lo #   [3] BENGALI LETTER YYA..BENGALI LETTER VOCALIC LL
+09F0..09F1    ; Lo #   [2] BENGALI LETTER RA WITH MIDDLE DIAGONAL..BENGALI LETTER RA WITH LOWER DIAGONAL
+09FC          ; Lo #       BENGALI LETTER VEDIC ANUSVARA
+0A05..0A0A    ; Lo #   [6] GURMUKHI LETTER A..GURMUKHI LETTER UU
+0A0F..0A10    ; Lo #   [2] GURMUKHI LETTER EE..GURMUKHI LETTER AI
+0A13..0A28    ; Lo #  [22] GURMUKHI LETTER OO..GURMUKHI LETTER NA
+0A2A..0A30    ; Lo #   [7] GURMUKHI LETTER PA..GURMUKHI LETTER RA
+0A32..0A33    ; Lo #   [2] GURMUKHI LETTER LA..GURMUKHI LETTER LLA
+0A35..0A36    ; Lo #   [2] GURMUKHI LETTER VA..GURMUKHI LETTER SHA
+0A38..0A39    ; Lo #   [2] GURMUKHI LETTER SA..GURMUKHI LETTER HA
+0A59..0A5C    ; Lo #   [4] GURMUKHI LETTER KHHA..GURMUKHI LETTER RRA
+0A5E          ; Lo #       GURMUKHI LETTER FA
+0A72..0A74    ; Lo #   [3] GURMUKHI IRI..GURMUKHI EK ONKAR
+0A85..0A8D    ; Lo #   [9] GUJARATI LETTER A..GUJARATI VOWEL CANDRA E
+0A8F..0A91    ; Lo #   [3] GUJARATI LETTER E..GUJARATI VOWEL CANDRA O
+0A93..0AA8    ; Lo #  [22] GUJARATI LETTER O..GUJARATI LETTER NA
+0AAA..0AB0    ; Lo #   [7] GUJARATI LETTER PA..GUJARATI LETTER RA
+0AB2..0AB3    ; Lo #   [2] GUJARATI LETTER LA..GUJARATI LETTER LLA
+0AB5..0AB9    ; Lo #   [5] GUJARATI LETTER VA..GUJARATI LETTER HA
+0ABD          ; Lo #       GUJARATI SIGN AVAGRAHA
+0AD0          ; Lo #       GUJARATI OM
+0AE0..0AE1    ; Lo #   [2] GUJARATI LETTER VOCALIC RR..GUJARATI LETTER VOCALIC LL
+0AF9          ; Lo #       GUJARATI LETTER ZHA
+0B05..0B0C    ; Lo #   [8] ORIYA LETTER A..ORIYA LETTER VOCALIC L
+0B0F..0B10    ; Lo #   [2] ORIYA LETTER E..ORIYA LETTER AI
+0B13..0B28    ; Lo #  [22] ORIYA LETTER O..ORIYA LETTER NA
+0B2A..0B30    ; Lo #   [7] ORIYA LETTER PA..ORIYA LETTER RA
+0B32..0B33    ; Lo #   [2] ORIYA LETTER LA..ORIYA LETTER LLA
+0B35..0B39    ; Lo #   [5] ORIYA LETTER VA..ORIYA LETTER HA
+0B3D          ; Lo #       ORIYA SIGN AVAGRAHA
+0B5C..0B5D    ; Lo #   [2] ORIYA LETTER RRA..ORIYA LETTER RHA
+0B5F..0B61    ; Lo #   [3] ORIYA LETTER YYA..ORIYA LETTER VOCALIC LL
+0B71          ; Lo #       ORIYA LETTER WA
+0B83          ; Lo #       TAMIL SIGN VISARGA
+0B85..0B8A    ; Lo #   [6] TAMIL LETTER A..TAMIL LETTER UU
+0B8E..0B90    ; Lo #   [3] TAMIL LETTER E..TAMIL LETTER AI
+0B92..0B95    ; Lo #   [4] TAMIL LETTER O..TAMIL LETTER KA
+0B99..0B9A    ; Lo #   [2] TAMIL LETTER NGA..TAMIL LETTER CA
+0B9C          ; Lo #       TAMIL LETTER JA
+0B9E..0B9F    ; Lo #   [2] TAMIL LETTER NYA..TAMIL LETTER TTA
+0BA3..0BA4    ; Lo #   [2] TAMIL LETTER NNA..TAMIL LETTER TA
+0BA8..0BAA    ; Lo #   [3] TAMIL LETTER NA..TAMIL LETTER PA
+0BAE..0BB9    ; Lo #  [12] TAMIL LETTER MA..TAMIL LETTER HA
+0BD0          ; Lo #       TAMIL OM
+0C05..0C0C    ; Lo #   [8] TELUGU LETTER A..TELUGU LETTER VOCALIC L
+0C0E..0C10    ; Lo #   [3] TELUGU LETTER E..TELUGU LETTER AI
+0C12..0C28    ; Lo #  [23] TELUGU LETTER O..TELUGU LETTER NA
+0C2A..0C39    ; Lo #  [16] TELUGU LETTER PA..TELUGU LETTER HA
+0C3D          ; Lo #       TELUGU SIGN AVAGRAHA
+0C58..0C5A    ; Lo #   [3] TELUGU LETTER TSA..TELUGU LETTER RRRA
+0C5D          ; Lo #       TELUGU LETTER NAKAARA POLLU
+0C60..0C61    ; Lo #   [2] TELUGU LETTER VOCALIC RR..TELUGU LETTER VOCALIC LL
+0C80          ; Lo #       KANNADA SIGN SPACING CANDRABINDU
+0C85..0C8C    ; Lo #   [8] KANNADA LETTER A..KANNADA LETTER VOCALIC L
+0C8E..0C90    ; Lo #   [3] KANNADA LETTER E..KANNADA LETTER AI
+0C92..0CA8    ; Lo #  [23] KANNADA LETTER O..KANNADA LETTER NA
+0CAA..0CB3    ; Lo #  [10] KANNADA LETTER PA..KANNADA LETTER LLA
+0CB5..0CB9    ; Lo #   [5] KANNADA LETTER VA..KANNADA LETTER HA
+0CBD          ; Lo #       KANNADA SIGN AVAGRAHA
+0CDD..0CDE    ; Lo #   [2] KANNADA LETTER NAKAARA POLLU..KANNADA LETTER FA
+0CE0..0CE1    ; Lo #   [2] KANNADA LETTER VOCALIC RR..KANNADA LETTER VOCALIC LL
+0CF1..0CF2    ; Lo #   [2] KANNADA SIGN JIHVAMULIYA..KANNADA SIGN UPADHMANIYA
+0D04..0D0C    ; Lo #   [9] MALAYALAM LETTER VEDIC ANUSVARA..MALAYALAM LETTER VOCALIC L
+0D0E..0D10    ; Lo #   [3] MALAYALAM LETTER E..MALAYALAM LETTER AI
+0D12..0D3A    ; Lo #  [41] MALAYALAM LETTER O..MALAYALAM LETTER TTTA
+0D3D          ; Lo #       MALAYALAM SIGN AVAGRAHA
+0D4E          ; Lo #       MALAYALAM LETTER DOT REPH
+0D54..0D56    ; Lo #   [3] MALAYALAM LETTER CHILLU M..MALAYALAM LETTER CHILLU LLL
+0D5F..0D61    ; Lo #   [3] MALAYALAM LETTER ARCHAIC II..MALAYALAM LETTER VOCALIC LL
+0D7A..0D7F    ; Lo #   [6] MALAYALAM LETTER CHILLU NN..MALAYALAM LETTER CHILLU K
+0D85..0D96    ; Lo #  [18] SINHALA LETTER AYANNA..SINHALA LETTER AUYANNA
+0D9A..0DB1    ; Lo #  [24] SINHALA LETTER ALPAPRAANA KAYANNA..SINHALA LETTER DANTAJA NAYANNA
+0DB3..0DBB    ; Lo #   [9] SINHALA LETTER SANYAKA DAYANNA..SINHALA LETTER RAYANNA
+0DBD          ; Lo #       SINHALA LETTER DANTAJA LAYANNA
+0DC0..0DC6    ; Lo #   [7] SINHALA LETTER VAYANNA..SINHALA LETTER FAYANNA
+0E01..0E30    ; Lo #  [48] THAI CHARACTER KO KAI..THAI CHARACTER SARA A
+0E32..0E33    ; Lo #   [2] THAI CHARACTER SARA AA..THAI CHARACTER SARA AM
+0E40..0E45    ; Lo #   [6] THAI CHARACTER SARA E..THAI CHARACTER LAKKHANGYAO
+0E81..0E82    ; Lo #   [2] LAO LETTER KO..LAO LETTER KHO SUNG
+0E84          ; Lo #       LAO LETTER KHO TAM
+0E86..0E8A    ; Lo #   [5] LAO LETTER PALI GHA..LAO LETTER SO TAM
+0E8C..0EA3    ; Lo #  [24] LAO LETTER PALI JHA..LAO LETTER LO LING
+0EA5          ; Lo #       LAO LETTER LO LOOT
+0EA7..0EB0    ; Lo #  [10] LAO LETTER WO..LAO VOWEL SIGN A
+0EB2..0EB3    ; Lo #   [2] LAO VOWEL SIGN AA..LAO VOWEL SIGN AM
+0EBD          ; Lo #       LAO SEMIVOWEL SIGN NYO
+0EC0..0EC4    ; Lo #   [5] LAO VOWEL SIGN E..LAO VOWEL SIGN AI
+0EDC..0EDF    ; Lo #   [4] LAO HO NO..LAO LETTER KHMU NYO
+0F00          ; Lo #       TIBETAN SYLLABLE OM
+0F40..0F47    ; Lo #   [8] TIBETAN LETTER KA..TIBETAN LETTER JA
+0F49..0F6C    ; Lo #  [36] TIBETAN LETTER NYA..TIBETAN LETTER RRA
+0F88..0F8C    ; Lo #   [5] TIBETAN SIGN LCE TSA CAN..TIBETAN SIGN INVERTED MCHU CAN
+1000..102A    ; Lo #  [43] MYANMAR LETTER KA..MYANMAR LETTER AU
+103F          ; Lo #       MYANMAR LETTER GREAT SA
+1050..1055    ; Lo #   [6] MYANMAR LETTER SHA..MYANMAR LETTER VOCALIC LL
+105A..105D    ; Lo #   [4] MYANMAR LETTER MON NGA..MYANMAR LETTER MON BBE
+1061          ; Lo #       MYANMAR LETTER SGAW KAREN SHA
+1065..1066    ; Lo #   [2] MYANMAR LETTER WESTERN PWO KAREN THA..MYANMAR LETTER WESTERN PWO KAREN PWA
+106E..1070    ; Lo #   [3] MYANMAR LETTER EASTERN PWO KAREN NNA..MYANMAR LETTER EASTERN PWO KAREN GHWA
+1075..1081    ; Lo #  [13] MYANMAR LETTER SHAN KA..MYANMAR LETTER SHAN HA
+108E          ; Lo #       MYANMAR LETTER RUMAI PALAUNG FA
+1100..1248    ; Lo # [329] HANGUL CHOSEONG KIYEOK..ETHIOPIC SYLLABLE QWA
+124A..124D    ; Lo #   [4] ETHIOPIC SYLLABLE QWI..ETHIOPIC SYLLABLE QWE
+1250..1256    ; Lo #   [7] ETHIOPIC SYLLABLE QHA..ETHIOPIC SYLLABLE QHO
+1258          ; Lo #       ETHIOPIC SYLLABLE QHWA
+125A..125D    ; Lo #   [4] ETHIOPIC SYLLABLE QHWI..ETHIOPIC SYLLABLE QHWE
+1260..1288    ; Lo #  [41] ETHIOPIC SYLLABLE BA..ETHIOPIC SYLLABLE XWA
+128A..128D    ; Lo #   [4] ETHIOPIC SYLLABLE XWI..ETHIOPIC SYLLABLE XWE
+1290..12B0    ; Lo #  [33] ETHIOPIC SYLLABLE NA..ETHIOPIC SYLLABLE KWA
+12B2..12B5    ; Lo #   [4] ETHIOPIC SYLLABLE KWI..ETHIOPIC SYLLABLE KWE
+12B8..12BE    ; Lo #   [7] ETHIOPIC SYLLABLE KXA..ETHIOPIC SYLLABLE KXO
+12C0          ; Lo #       ETHIOPIC SYLLABLE KXWA
+12C2..12C5    ; Lo #   [4] ETHIOPIC SYLLABLE KXWI..ETHIOPIC SYLLABLE KXWE
+12C8..12D6    ; Lo #  [15] ETHIOPIC SYLLABLE WA..ETHIOPIC SYLLABLE PHARYNGEAL O
+12D8..1310    ; Lo #  [57] ETHIOPIC SYLLABLE ZA..ETHIOPIC SYLLABLE GWA
+1312..1315    ; Lo #   [4] ETHIOPIC SYLLABLE GWI..ETHIOPIC SYLLABLE GWE
+1318..135A    ; Lo #  [67] ETHIOPIC SYLLABLE GGA..ETHIOPIC SYLLABLE FYA
+1380..138F    ; Lo #  [16] ETHIOPIC SYLLABLE SEBATBEIT MWA..ETHIOPIC SYLLABLE PWE
+1401..166C    ; Lo # [620] CANADIAN SYLLABICS E..CANADIAN SYLLABICS CARRIER TTSA
+166F..167F    ; Lo #  [17] CANADIAN SYLLABICS QAI..CANADIAN SYLLABICS BLACKFOOT W
+1681..169A    ; Lo #  [26] OGHAM LETTER BEITH..OGHAM LETTER PEITH
+16A0..16EA    ; Lo #  [75] RUNIC LETTER FEHU FEOH FE F..RUNIC LETTER X
+16F1..16F8    ; Lo #   [8] RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AESC
+1700..1711    ; Lo #  [18] TAGALOG LETTER A..TAGALOG LETTER HA
+171F..1731    ; Lo #  [19] TAGALOG LETTER ARCHAIC RA..HANUNOO LETTER HA
+1740..1751    ; Lo #  [18] BUHID LETTER A..BUHID LETTER HA
+1760..176C    ; Lo #  [13] TAGBANWA LETTER A..TAGBANWA LETTER YA
+176E..1770    ; Lo #   [3] TAGBANWA LETTER LA..TAGBANWA LETTER SA
+1780..17B3    ; Lo #  [52] KHMER LETTER KA..KHMER INDEPENDENT VOWEL QAU
+17DC          ; Lo #       KHMER SIGN AVAKRAHASANYA
+1820..1842    ; Lo #  [35] MONGOLIAN LETTER A..MONGOLIAN LETTER CHI
+1844..1878    ; Lo #  [53] MONGOLIAN LETTER TODO E..MONGOLIAN LETTER CHA WITH TWO DOTS
+1880..1884    ; Lo #   [5] MONGOLIAN LETTER ALI GALI ANUSVARA ONE..MONGOLIAN LETTER ALI GALI INVERTED UBADAMA
+1887..18A8    ; Lo #  [34] MONGOLIAN LETTER ALI GALI A..MONGOLIAN LETTER MANCHU ALI GALI BHA
+18AA          ; Lo #       MONGOLIAN LETTER MANCHU ALI GALI LHA
+18B0..18F5    ; Lo #  [70] CANADIAN SYLLABICS OY..CANADIAN SYLLABICS CARRIER DENTAL S
+1900..191E    ; Lo #  [31] LIMBU VOWEL-CARRIER LETTER..LIMBU LETTER TRA
+1950..196D    ; Lo #  [30] TAI LE LETTER KA..TAI LE LETTER AI
+1970..1974    ; Lo #   [5] TAI LE LETTER TONE-2..TAI LE LETTER TONE-6
+1980..19AB    ; Lo #  [44] NEW TAI LUE LETTER HIGH QA..NEW TAI LUE LETTER LOW SUA
+19B0..19C9    ; Lo #  [26] NEW TAI LUE VOWEL SIGN VOWEL SHORTENER..NEW TAI LUE TONE MARK-2
+1A00..1A16    ; Lo #  [23] BUGINESE LETTER KA..BUGINESE LETTER HA
+1A20..1A54    ; Lo #  [53] TAI THAM LETTER HIGH KA..TAI THAM LETTER GREAT SA
+1B05..1B33    ; Lo #  [47] BALINESE LETTER AKARA..BALINESE LETTER HA
+1B45..1B4C    ; Lo #   [8] BALINESE LETTER KAF SASAK..BALINESE LETTER ARCHAIC JNYA
+1B83..1BA0    ; Lo #  [30] SUNDANESE LETTER A..SUNDANESE LETTER HA
+1BAE..1BAF    ; Lo #   [2] SUNDANESE LETTER KHA..SUNDANESE LETTER SYA
+1BBA..1BE5    ; Lo #  [44] SUNDANESE AVAGRAHA..BATAK LETTER U
+1C00..1C23    ; Lo #  [36] LEPCHA LETTER KA..LEPCHA LETTER A
+1C4D..1C4F    ; Lo #   [3] LEPCHA LETTER TTA..LEPCHA LETTER DDA
+1C5A..1C77    ; Lo #  [30] OL CHIKI LETTER LA..OL CHIKI LETTER OH
+1CE9..1CEC    ; Lo #   [4] VEDIC SIGN ANUSVARA ANTARGOMUKHA..VEDIC SIGN ANUSVARA VAMAGOMUKHA WITH TAIL
+1CEE..1CF3    ; Lo #   [6] VEDIC SIGN HEXIFORM LONG ANUSVARA..VEDIC SIGN ROTATED ARDHAVISARGA
+1CF5..1CF6    ; Lo #   [2] VEDIC SIGN JIHVAMULIYA..VEDIC SIGN UPADHMANIYA
+1CFA          ; Lo #       VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA
+2135..2138    ; Lo #   [4] ALEF SYMBOL..DALET SYMBOL
+2D30..2D67    ; Lo #  [56] TIFINAGH LETTER YA..TIFINAGH LETTER YO
+2D80..2D96    ; Lo #  [23] ETHIOPIC SYLLABLE LOA..ETHIOPIC SYLLABLE GGWE
+2DA0..2DA6    ; Lo #   [7] ETHIOPIC SYLLABLE SSA..ETHIOPIC SYLLABLE SSO
+2DA8..2DAE    ; Lo #   [7] ETHIOPIC SYLLABLE CCA..ETHIOPIC SYLLABLE CCO
+2DB0..2DB6    ; Lo #   [7] ETHIOPIC SYLLABLE ZZA..ETHIOPIC SYLLABLE ZZO
+2DB8..2DBE    ; Lo #   [7] ETHIOPIC SYLLABLE CCHA..ETHIOPIC SYLLABLE CCHO
+2DC0..2DC6    ; Lo #   [7] ETHIOPIC SYLLABLE QYA..ETHIOPIC SYLLABLE QYO
+2DC8..2DCE    ; Lo #   [7] ETHIOPIC SYLLABLE KYA..ETHIOPIC SYLLABLE KYO
+2DD0..2DD6    ; Lo #   [7] ETHIOPIC SYLLABLE XYA..ETHIOPIC SYLLABLE XYO
+2DD8..2DDE    ; Lo #   [7] ETHIOPIC SYLLABLE GYA..ETHIOPIC SYLLABLE GYO
+3006          ; Lo #       IDEOGRAPHIC CLOSING MARK
+303C          ; Lo #       MASU MARK
+3041..3096    ; Lo #  [86] HIRAGANA LETTER SMALL A..HIRAGANA LETTER SMALL KE
+309F          ; Lo #       HIRAGANA DIGRAPH YORI
+30A1..30FA    ; Lo #  [90] KATAKANA LETTER SMALL A..KATAKANA LETTER VO
+30FF          ; Lo #       KATAKANA DIGRAPH KOTO
+3105..312F    ; Lo #  [43] BOPOMOFO LETTER B..BOPOMOFO LETTER NN
+3131..318E    ; Lo #  [94] HANGUL LETTER KIYEOK..HANGUL LETTER ARAEAE
+31A0..31BF    ; Lo #  [32] BOPOMOFO LETTER BU..BOPOMOFO LETTER AH
+31F0..31FF    ; Lo #  [16] KATAKANA LETTER SMALL KU..KATAKANA LETTER SMALL RO
+3400..4DBF    ; Lo # [6592] CJK UNIFIED IDEOGRAPH-3400..CJK UNIFIED IDEOGRAPH-4DBF
+4E00..A014    ; Lo # [21013] CJK UNIFIED IDEOGRAPH-4E00..YI SYLLABLE E
+A016..A48C    ; Lo # [1143] YI SYLLABLE BIT..YI SYLLABLE YYR
+A4D0..A4F7    ; Lo #  [40] LISU LETTER BA..LISU LETTER OE
+A500..A60B    ; Lo # [268] VAI SYLLABLE EE..VAI SYLLABLE NG
+A610..A61F    ; Lo #  [16] VAI SYLLABLE NDOLE FA..VAI SYMBOL JONG
+A62A..A62B    ; Lo #   [2] VAI SYLLABLE NDOLE MA..VAI SYLLABLE NDOLE DO
+A66E          ; Lo #       CYRILLIC LETTER MULTIOCULAR O
+A6A0..A6E5    ; Lo #  [70] BAMUM LETTER A..BAMUM LETTER KI
+A78F          ; Lo #       LATIN LETTER SINOLOGICAL DOT
+A7F7          ; Lo #       LATIN EPIGRAPHIC LETTER SIDEWAYS I
+A7FB..A801    ; Lo #   [7] LATIN EPIGRAPHIC LETTER REVERSED F..SYLOTI NAGRI LETTER I
+A803..A805    ; Lo #   [3] SYLOTI NAGRI LETTER U..SYLOTI NAGRI LETTER O
+A807..A80A    ; Lo #   [4] SYLOTI NAGRI LETTER KO..SYLOTI NAGRI LETTER GHO
+A80C..A822    ; Lo #  [23] SYLOTI NAGRI LETTER CO..SYLOTI NAGRI LETTER HO
+A840..A873    ; Lo #  [52] PHAGS-PA LETTER KA..PHAGS-PA LETTER CANDRABINDU
+A882..A8B3    ; Lo #  [50] SAURASHTRA LETTER A..SAURASHTRA LETTER LLA
+A8F2..A8F7    ; Lo #   [6] DEVANAGARI SIGN SPACING CANDRABINDU..DEVANAGARI SIGN CANDRABINDU AVAGRAHA
+A8FB          ; Lo #       DEVANAGARI HEADSTROKE
+A8FD..A8FE    ; Lo #   [2] DEVANAGARI JAIN OM..DEVANAGARI LETTER AY
+A90A..A925    ; Lo #  [28] KAYAH LI LETTER KA..KAYAH LI LETTER OO
+A930..A946    ; Lo #  [23] REJANG LETTER KA..REJANG LETTER A
+A960..A97C    ; Lo #  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+A984..A9B2    ; Lo #  [47] JAVANESE LETTER A..JAVANESE LETTER HA
+A9E0..A9E4    ; Lo #   [5] MYANMAR LETTER SHAN GHA..MYANMAR LETTER SHAN BHA
+A9E7..A9EF    ; Lo #   [9] MYANMAR LETTER TAI LAING NYA..MYANMAR LETTER TAI LAING NNA
+A9FA..A9FE    ; Lo #   [5] MYANMAR LETTER TAI LAING LLA..MYANMAR LETTER TAI LAING BHA
+AA00..AA28    ; Lo #  [41] CHAM LETTER A..CHAM LETTER HA
+AA40..AA42    ; Lo #   [3] CHAM LETTER FINAL K..CHAM LETTER FINAL NG
+AA44..AA4B    ; Lo #   [8] CHAM LETTER FINAL CH..CHAM LETTER FINAL SS
+AA60..AA6F    ; Lo #  [16] MYANMAR LETTER KHAMTI GA..MYANMAR LETTER KHAMTI FA
+AA71..AA76    ; Lo #   [6] MYANMAR LETTER KHAMTI XA..MYANMAR LOGOGRAM KHAMTI HM
+AA7A          ; Lo #       MYANMAR LETTER AITON RA
+AA7E..AAAF    ; Lo #  [50] MYANMAR LETTER SHWE PALAUNG CHA..TAI VIET LETTER HIGH O
+AAB1          ; Lo #       TAI VIET VOWEL AA
+AAB5..AAB6    ; Lo #   [2] TAI VIET VOWEL E..TAI VIET VOWEL O
+AAB9..AABD    ; Lo #   [5] TAI VIET VOWEL UEA..TAI VIET VOWEL AN
+AAC0          ; Lo #       TAI VIET TONE MAI NUENG
+AAC2          ; Lo #       TAI VIET TONE MAI SONG
+AADB..AADC    ; Lo #   [2] TAI VIET SYMBOL KON..TAI VIET SYMBOL NUENG
+AAE0..AAEA    ; Lo #  [11] MEETEI MAYEK LETTER E..MEETEI MAYEK LETTER SSA
+AAF2          ; Lo #       MEETEI MAYEK ANJI
+AB01..AB06    ; Lo #   [6] ETHIOPIC SYLLABLE TTHU..ETHIOPIC SYLLABLE TTHO
+AB09..AB0E    ; Lo #   [6] ETHIOPIC SYLLABLE DDHU..ETHIOPIC SYLLABLE DDHO
+AB11..AB16    ; Lo #   [6] ETHIOPIC SYLLABLE DZU..ETHIOPIC SYLLABLE DZO
+AB20..AB26    ; Lo #   [7] ETHIOPIC SYLLABLE CCHHA..ETHIOPIC SYLLABLE CCHHO
+AB28..AB2E    ; Lo #   [7] ETHIOPIC SYLLABLE BBA..ETHIOPIC SYLLABLE BBO
+ABC0..ABE2    ; Lo #  [35] MEETEI MAYEK LETTER KOK..MEETEI MAYEK LETTER I LONSUM
+AC00..D7A3    ; Lo # [11172] HANGUL SYLLABLE GA..HANGUL SYLLABLE HIH
+D7B0..D7C6    ; Lo #  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+D7CB..D7FB    ; Lo #  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+F900..FA6D    ; Lo # [366] CJK COMPATIBILITY IDEOGRAPH-F900..CJK COMPATIBILITY IDEOGRAPH-FA6D
+FA70..FAD9    ; Lo # [106] CJK COMPATIBILITY IDEOGRAPH-FA70..CJK COMPATIBILITY IDEOGRAPH-FAD9
+FB1D          ; Lo #       HEBREW LETTER YOD WITH HIRIQ
+FB1F..FB28    ; Lo #  [10] HEBREW LIGATURE YIDDISH YOD YOD PATAH..HEBREW LETTER WIDE TAV
+FB2A..FB36    ; Lo #  [13] HEBREW LETTER SHIN WITH SHIN DOT..HEBREW LETTER ZAYIN WITH DAGESH
+FB38..FB3C    ; Lo #   [5] HEBREW LETTER TET WITH DAGESH..HEBREW LETTER LAMED WITH DAGESH
+FB3E          ; Lo #       HEBREW LETTER MEM WITH DAGESH
+FB40..FB41    ; Lo #   [2] HEBREW LETTER NUN WITH DAGESH..HEBREW LETTER SAMEKH WITH DAGESH
+FB43..FB44    ; Lo #   [2] HEBREW LETTER FINAL PE WITH DAGESH..HEBREW LETTER PE WITH DAGESH
+FB46..FBB1    ; Lo # [108] HEBREW LETTER TSADI WITH DAGESH..ARABIC LETTER YEH BARREE WITH HAMZA ABOVE FINAL FORM
+FBD3..FD3D    ; Lo # [363] ARABIC LETTER NG ISOLATED FORM..ARABIC LIGATURE ALEF WITH FATHATAN ISOLATED FORM
+FD50..FD8F    ; Lo #  [64] ARABIC LIGATURE TEH WITH JEEM WITH MEEM INITIAL FORM..ARABIC LIGATURE MEEM WITH KHAH WITH MEEM INITIAL FORM
+FD92..FDC7    ; Lo #  [54] ARABIC LIGATURE MEEM WITH JEEM WITH KHAH INITIAL FORM..ARABIC LIGATURE NOON WITH JEEM WITH YEH FINAL FORM
+FDF0..FDFB    ; Lo #  [12] ARABIC LIGATURE SALLA USED AS KORANIC STOP SIGN ISOLATED FORM..ARABIC LIGATURE JALLAJALALOUHOU
+FE70..FE74    ; Lo #   [5] ARABIC FATHATAN ISOLATED FORM..ARABIC KASRATAN ISOLATED FORM
+FE76..FEFC    ; Lo # [135] ARABIC FATHA ISOLATED FORM..ARABIC LIGATURE LAM WITH ALEF FINAL FORM
+FF66..FF6F    ; Lo #  [10] HALFWIDTH KATAKANA LETTER WO..HALFWIDTH KATAKANA LETTER SMALL TU
+FF71..FF9D    ; Lo #  [45] HALFWIDTH KATAKANA LETTER A..HALFWIDTH KATAKANA LETTER N
+FFA0..FFBE    ; Lo #  [31] HALFWIDTH HANGUL FILLER..HALFWIDTH HANGUL LETTER HIEUH
+FFC2..FFC7    ; Lo #   [6] HALFWIDTH HANGUL LETTER A..HALFWIDTH HANGUL LETTER E
+FFCA..FFCF    ; Lo #   [6] HALFWIDTH HANGUL LETTER YEO..HALFWIDTH HANGUL LETTER OE
+FFD2..FFD7    ; Lo #   [6] HALFWIDTH HANGUL LETTER YO..HALFWIDTH HANGUL LETTER YU
+FFDA..FFDC    ; Lo #   [3] HALFWIDTH HANGUL LETTER EU..HALFWIDTH HANGUL LETTER I
+10000..1000B  ; Lo #  [12] LINEAR B SYLLABLE B008 A..LINEAR B SYLLABLE B046 JE
+1000D..10026  ; Lo #  [26] LINEAR B SYLLABLE B036 JO..LINEAR B SYLLABLE B032 QO
+10028..1003A  ; Lo #  [19] LINEAR B SYLLABLE B060 RA..LINEAR B SYLLABLE B042 WO
+1003C..1003D  ; Lo #   [2] LINEAR B SYLLABLE B017 ZA..LINEAR B SYLLABLE B074 ZE
+1003F..1004D  ; Lo #  [15] LINEAR B SYLLABLE B020 ZO..LINEAR B SYLLABLE B091 TWO
+10050..1005D  ; Lo #  [14] LINEAR B SYMBOL B018..LINEAR B SYMBOL B089
+10080..100FA  ; Lo # [123] LINEAR B IDEOGRAM B100 MAN..LINEAR B IDEOGRAM VESSEL B305
+10280..1029C  ; Lo #  [29] LYCIAN LETTER A..LYCIAN LETTER X
+102A0..102D0  ; Lo #  [49] CARIAN LETTER A..CARIAN LETTER UUU3
+10300..1031F  ; Lo #  [32] OLD ITALIC LETTER A..OLD ITALIC LETTER ESS
+1032D..10340  ; Lo #  [20] OLD ITALIC LETTER YE..GOTHIC LETTER PAIRTHRA
+10342..10349  ; Lo #   [8] GOTHIC LETTER RAIDA..GOTHIC LETTER OTHAL
+10350..10375  ; Lo #  [38] OLD PERMIC LETTER AN..OLD PERMIC LETTER IA
+10380..1039D  ; Lo #  [30] UGARITIC LETTER ALPA..UGARITIC LETTER SSU
+103A0..103C3  ; Lo #  [36] OLD PERSIAN SIGN A..OLD PERSIAN SIGN HA
+103C8..103CF  ; Lo #   [8] OLD PERSIAN SIGN AURAMAZDAA..OLD PERSIAN SIGN BUUMISH
+10450..1049D  ; Lo #  [78] SHAVIAN LETTER PEEP..OSMANYA LETTER OO
+10500..10527  ; Lo #  [40] ELBASAN LETTER A..ELBASAN LETTER KHE
+10530..10563  ; Lo #  [52] CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBANIAN LETTER KIW
+10600..10736  ; Lo # [311] LINEAR A SIGN AB001..LINEAR A SIGN A664
+10740..10755  ; Lo #  [22] LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE
+10760..10767  ; Lo #   [8] LINEAR A SIGN A800..LINEAR A SIGN A807
+10800..10805  ; Lo #   [6] CYPRIOT SYLLABLE A..CYPRIOT SYLLABLE JA
+10808         ; Lo #       CYPRIOT SYLLABLE JO
+1080A..10835  ; Lo #  [44] CYPRIOT SYLLABLE KA..CYPRIOT SYLLABLE WO
+10837..10838  ; Lo #   [2] CYPRIOT SYLLABLE XA..CYPRIOT SYLLABLE XE
+1083C         ; Lo #       CYPRIOT SYLLABLE ZA
+1083F..10855  ; Lo #  [23] CYPRIOT SYLLABLE ZO..IMPERIAL ARAMAIC LETTER TAW
+10860..10876  ; Lo #  [23] PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW
+10880..1089E  ; Lo #  [31] NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTER TAW
+108E0..108F2  ; Lo #  [19] HATRAN LETTER ALEPH..HATRAN LETTER QOPH
+108F4..108F5  ; Lo #   [2] HATRAN LETTER SHIN..HATRAN LETTER TAW
+10900..10915  ; Lo #  [22] PHOENICIAN LETTER ALF..PHOENICIAN LETTER TAU
+10920..10939  ; Lo #  [26] LYDIAN LETTER A..LYDIAN LETTER C
+10980..109B7  ; Lo #  [56] MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURSIVE LETTER DA
+109BE..109BF  ; Lo #   [2] MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSIVE LOGOGRAM IMN
+10A00         ; Lo #       KHAROSHTHI LETTER A
+10A10..10A13  ; Lo #   [4] KHAROSHTHI LETTER KA..KHAROSHTHI LETTER GHA
+10A15..10A17  ; Lo #   [3] KHAROSHTHI LETTER CA..KHAROSHTHI LETTER JA
+10A19..10A35  ; Lo #  [29] KHAROSHTHI LETTER NYA..KHAROSHTHI LETTER VHA
+10A60..10A7C  ; Lo #  [29] OLD SOUTH ARABIAN LETTER HE..OLD SOUTH ARABIAN LETTER THETH
+10A80..10A9C  ; Lo #  [29] OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABIAN LETTER ZAH
+10AC0..10AC7  ; Lo #   [8] MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WAW
+10AC9..10AE4  ; Lo #  [28] MANICHAEAN LETTER ZAYIN..MANICHAEAN LETTER TAW
+10B00..10B35  ; Lo #  [54] AVESTAN LETTER A..AVESTAN LETTER HE
+10B40..10B55  ; Lo #  [22] INSCRIPTIONAL PARTHIAN LETTER ALEPH..INSCRIPTIONAL PARTHIAN LETTER TAW
+10B60..10B72  ; Lo #  [19] INSCRIPTIONAL PAHLAVI LETTER ALEPH..INSCRIPTIONAL PAHLAVI LETTER TAW
+10B80..10B91  ; Lo #  [18] PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI LETTER TAW
+10C00..10C48  ; Lo #  [73] OLD TURKIC LETTER ORKHON A..OLD TURKIC LETTER ORKHON BASH
+10D00..10D23  ; Lo #  [36] HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA MARK NA KHONNA
+10E80..10EA9  ; Lo #  [42] YEZIDI LETTER ELIF..YEZIDI LETTER ET
+10EB0..10EB1  ; Lo #   [2] YEZIDI LETTER LAM WITH DOT ABOVE..YEZIDI LETTER YOT WITH CIRCUMFLEX ABOVE
+10F00..10F1C  ; Lo #  [29] OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER FINAL TAW WITH VERTICAL TAIL
+10F27         ; Lo #       OLD SOGDIAN LIGATURE AYIN-DALETH
+10F30..10F45  ; Lo #  [22] SOGDIAN LETTER ALEPH..SOGDIAN INDEPENDENT SHIN
+10F70..10F81  ; Lo #  [18] OLD UYGHUR LETTER ALEPH..OLD UYGHUR LETTER LESH
+10FB0..10FC4  ; Lo #  [21] CHORASMIAN LETTER ALEPH..CHORASMIAN LETTER TAW
+10FE0..10FF6  ; Lo #  [23] ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN-YODH
+11003..11037  ; Lo #  [53] BRAHMI SIGN JIHVAMULIYA..BRAHMI LETTER OLD TAMIL NNNA
+11071..11072  ; Lo #   [2] BRAHMI LETTER OLD TAMIL SHORT E..BRAHMI LETTER OLD TAMIL SHORT O
+11075         ; Lo #       BRAHMI LETTER OLD TAMIL LLA
+11083..110AF  ; Lo #  [45] KAITHI LETTER A..KAITHI LETTER HA
+110D0..110E8  ; Lo #  [25] SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER MAE
+11103..11126  ; Lo #  [36] CHAKMA LETTER AA..CHAKMA LETTER HAA
+11144         ; Lo #       CHAKMA LETTER LHAA
+11147         ; Lo #       CHAKMA LETTER VAA
+11150..11172  ; Lo #  [35] MAHAJANI LETTER A..MAHAJANI LETTER RRA
+11176         ; Lo #       MAHAJANI LIGATURE SHRI
+11183..111B2  ; Lo #  [48] SHARADA LETTER A..SHARADA LETTER HA
+111C1..111C4  ; Lo #   [4] SHARADA SIGN AVAGRAHA..SHARADA OM
+111DA         ; Lo #       SHARADA EKAM
+111DC         ; Lo #       SHARADA HEADSTROKE
+11200..11211  ; Lo #  [18] KHOJKI LETTER A..KHOJKI LETTER JJA
+11213..1122B  ; Lo #  [25] KHOJKI LETTER NYA..KHOJKI LETTER LLA
+1123F..11240  ; Lo #   [2] KHOJKI LETTER QA..KHOJKI LETTER SHORT I
+11280..11286  ; Lo #   [7] MULTANI LETTER A..MULTANI LETTER GA
+11288         ; Lo #       MULTANI LETTER GHA
+1128A..1128D  ; Lo #   [4] MULTANI LETTER CA..MULTANI LETTER JJA
+1128F..1129D  ; Lo #  [15] MULTANI LETTER NYA..MULTANI LETTER BA
+1129F..112A8  ; Lo #  [10] MULTANI LETTER BHA..MULTANI LETTER RHA
+112B0..112DE  ; Lo #  [47] KHUDAWADI LETTER A..KHUDAWADI LETTER HA
+11305..1130C  ; Lo #   [8] GRANTHA LETTER A..GRANTHA LETTER VOCALIC L
+1130F..11310  ; Lo #   [2] GRANTHA LETTER EE..GRANTHA LETTER AI
+11313..11328  ; Lo #  [22] GRANTHA LETTER OO..GRANTHA LETTER NA
+1132A..11330  ; Lo #   [7] GRANTHA LETTER PA..GRANTHA LETTER RA
+11332..11333  ; Lo #   [2] GRANTHA LETTER LA..GRANTHA LETTER LLA
+11335..11339  ; Lo #   [5] GRANTHA LETTER VA..GRANTHA LETTER HA
+1133D         ; Lo #       GRANTHA SIGN AVAGRAHA
+11350         ; Lo #       GRANTHA OM
+1135D..11361  ; Lo #   [5] GRANTHA SIGN PLUTA..GRANTHA LETTER VOCALIC LL
+11400..11434  ; Lo #  [53] NEWA LETTER A..NEWA LETTER HA
+11447..1144A  ; Lo #   [4] NEWA SIGN AVAGRAHA..NEWA SIDDHI
+1145F..11461  ; Lo #   [3] NEWA LETTER VEDIC ANUSVARA..NEWA SIGN UPADHMANIYA
+11480..114AF  ; Lo #  [48] TIRHUTA ANJI..TIRHUTA LETTER HA
+114C4..114C5  ; Lo #   [2] TIRHUTA SIGN AVAGRAHA..TIRHUTA GVANG
+114C7         ; Lo #       TIRHUTA OM
+11580..115AE  ; Lo #  [47] SIDDHAM LETTER A..SIDDHAM LETTER HA
+115D8..115DB  ; Lo #   [4] SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDDHAM LETTER ALTERNATE U
+11600..1162F  ; Lo #  [48] MODI LETTER A..MODI LETTER LLA
+11644         ; Lo #       MODI SIGN HUVA
+11680..116AA  ; Lo #  [43] TAKRI LETTER A..TAKRI LETTER RRA
+116B8         ; Lo #       TAKRI LETTER ARCHAIC KHA
+11700..1171A  ; Lo #  [27] AHOM LETTER KA..AHOM LETTER ALTERNATE BA
+11740..11746  ; Lo #   [7] AHOM LETTER CA..AHOM LETTER LLA
+11800..1182B  ; Lo #  [44] DOGRA LETTER A..DOGRA LETTER RRA
+118FF..11906  ; Lo #   [8] WARANG CITI OM..DIVES AKURU LETTER E
+11909         ; Lo #       DIVES AKURU LETTER O
+1190C..11913  ; Lo #   [8] DIVES AKURU LETTER KA..DIVES AKURU LETTER JA
+11915..11916  ; Lo #   [2] DIVES AKURU LETTER NYA..DIVES AKURU LETTER TTA
+11918..1192F  ; Lo #  [24] DIVES AKURU LETTER DDA..DIVES AKURU LETTER ZA
+1193F         ; Lo #       DIVES AKURU PREFIXED NASAL SIGN
+11941         ; Lo #       DIVES AKURU INITIAL RA
+119A0..119A7  ; Lo #   [8] NANDINAGARI LETTER A..NANDINAGARI LETTER VOCALIC RR
+119AA..119D0  ; Lo #  [39] NANDINAGARI LETTER E..NANDINAGARI LETTER RRA
+119E1         ; Lo #       NANDINAGARI SIGN AVAGRAHA
+119E3         ; Lo #       NANDINAGARI HEADSTROKE
+11A00         ; Lo #       ZANABAZAR SQUARE LETTER A
+11A0B..11A32  ; Lo #  [40] ZANABAZAR SQUARE LETTER KA..ZANABAZAR SQUARE LETTER KSSA
+11A3A         ; Lo #       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A50         ; Lo #       SOYOMBO LETTER A
+11A5C..11A89  ; Lo #  [46] SOYOMBO LETTER KA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11A9D         ; Lo #       SOYOMBO MARK PLUTA
+11AB0..11AF8  ; Lo #  [73] CANADIAN SYLLABICS NATTILIK HI..PAU CIN HAU GLOTTAL STOP FINAL
+11C00..11C08  ; Lo #   [9] BHAIKSUKI LETTER A..BHAIKSUKI LETTER VOCALIC L
+11C0A..11C2E  ; Lo #  [37] BHAIKSUKI LETTER E..BHAIKSUKI LETTER HA
+11C40         ; Lo #       BHAIKSUKI SIGN AVAGRAHA
+11C72..11C8F  ; Lo #  [30] MARCHEN LETTER KA..MARCHEN LETTER A
+11D00..11D06  ; Lo #   [7] MASARAM GONDI LETTER A..MASARAM GONDI LETTER E
+11D08..11D09  ; Lo #   [2] MASARAM GONDI LETTER AI..MASARAM GONDI LETTER O
+11D0B..11D30  ; Lo #  [38] MASARAM GONDI LETTER AU..MASARAM GONDI LETTER TRA
+11D46         ; Lo #       MASARAM GONDI REPHA
+11D60..11D65  ; Lo #   [6] GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER UU
+11D67..11D68  ; Lo #   [2] GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER AI
+11D6A..11D89  ; Lo #  [32] GUNJALA GONDI LETTER OO..GUNJALA GONDI LETTER SA
+11D98         ; Lo #       GUNJALA GONDI OM
+11EE0..11EF2  ; Lo #  [19] MAKASAR LETTER KA..MAKASAR ANGKA
+11F02         ; Lo #       KAWI SIGN REPHA
+11F04..11F10  ; Lo #  [13] KAWI LETTER A..KAWI LETTER O
+11F12..11F33  ; Lo #  [34] KAWI LETTER KA..KAWI LETTER JNYA
+11FB0         ; Lo #       LISU LETTER YHA
+12000..12399  ; Lo # [922] CUNEIFORM SIGN A..CUNEIFORM SIGN U U
+12480..12543  ; Lo # [196] CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM SIGN ZU5 TIMES THREE DISH TENU
+12F90..12FF0  ; Lo #  [97] CYPRO-MINOAN SIGN CM001..CYPRO-MINOAN SIGN CM114
+13000..1342F  ; Lo # [1072] EGYPTIAN HIEROGLYPH A001..EGYPTIAN HIEROGLYPH V011D
+13441..13446  ; Lo #   [6] EGYPTIAN HIEROGLYPH FULL BLANK..EGYPTIAN HIEROGLYPH WIDE LOST SIGN
+14400..14646  ; Lo # [583] ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLYPH A530
+16800..16A38  ; Lo # [569] BAMUM LETTER PHASE-A NGKUE MFON..BAMUM LETTER PHASE-F VUEQ
+16A40..16A5E  ; Lo #  [31] MRO LETTER TA..MRO LETTER TEK
+16A70..16ABE  ; Lo #  [79] TANGSA LETTER OZ..TANGSA LETTER ZA
+16AD0..16AED  ; Lo #  [30] BASSA VAH LETTER ENNI..BASSA VAH LETTER I
+16B00..16B2F  ; Lo #  [48] PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG CONSONANT CAU
+16B63..16B77  ; Lo #  [21] PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN CIM NRES TOS
+16B7D..16B8F  ; Lo #  [19] PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG CLAN SIGN VWJ
+16F00..16F4A  ; Lo #  [75] MIAO LETTER PA..MIAO LETTER RTE
+16F50         ; Lo #       MIAO LETTER NASALIZATION
+17000..187F7  ; Lo # [6136] TANGUT IDEOGRAPH-17000..TANGUT IDEOGRAPH-187F7
+18800..18CD5  ; Lo # [1238] TANGUT COMPONENT-001..KHITAN SMALL SCRIPT CHARACTER-18CD5
+18D00..18D08  ; Lo #   [9] TANGUT IDEOGRAPH-18D00..TANGUT IDEOGRAPH-18D08
+1B000..1B122  ; Lo # [291] KATAKANA LETTER ARCHAIC E..KATAKANA LETTER ARCHAIC WU
+1B132         ; Lo #       HIRAGANA LETTER SMALL KO
+1B150..1B152  ; Lo #   [3] HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMALL WO
+1B155         ; Lo #       KATAKANA LETTER SMALL KO
+1B164..1B167  ; Lo #   [4] KATAKANA LETTER SMALL WI..KATAKANA LETTER SMALL N
+1B170..1B2FB  ; Lo # [396] NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB
+1BC00..1BC6A  ; Lo # [107] DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M
+1BC70..1BC7C  ; Lo #  [13] DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOYAN AFFIX ATTACHED TANGENT HOOK
+1BC80..1BC88  ; Lo #   [9] DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIGH VERTICAL
+1BC90..1BC99  ; Lo #  [10] DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW ARROW
+1DF0A         ; Lo #       LATIN LETTER RETROFLEX CLICK WITH RETROFLEX HOOK
+1E100..1E12C  ; Lo #  [45] NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PUACHUE HMONG LETTER W
+1E14E         ; Lo #       NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ
+1E290..1E2AD  ; Lo #  [30] TOTO LETTER PA..TOTO LETTER A
+1E2C0..1E2EB  ; Lo #  [44] WANCHO LETTER AA..WANCHO LETTER YIH
+1E4D0..1E4EA  ; Lo #  [27] NAG MUNDARI LETTER O..NAG MUNDARI LETTER ELL
+1E7E0..1E7E6  ; Lo #   [7] ETHIOPIC SYLLABLE HHYA..ETHIOPIC SYLLABLE HHYO
+1E7E8..1E7EB  ; Lo #   [4] ETHIOPIC SYLLABLE GURAGE HHWA..ETHIOPIC SYLLABLE HHWE
+1E7ED..1E7EE  ; Lo #   [2] ETHIOPIC SYLLABLE GURAGE MWI..ETHIOPIC SYLLABLE GURAGE MWEE
+1E7F0..1E7FE  ; Lo #  [15] ETHIOPIC SYLLABLE GURAGE QWI..ETHIOPIC SYLLABLE GURAGE PWEE
+1E800..1E8C4  ; Lo # [197] MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI SYLLABLE M060 NYON
+1EE00..1EE03  ; Lo #   [4] ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL DAL
+1EE05..1EE1F  ; Lo #  [27] ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL DOTLESS QAF
+1EE21..1EE22  ; Lo #   [2] ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHEMATICAL INITIAL JEEM
+1EE24         ; Lo #       ARABIC MATHEMATICAL INITIAL HEH
+1EE27         ; Lo #       ARABIC MATHEMATICAL INITIAL HAH
+1EE29..1EE32  ; Lo #  [10] ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHEMATICAL INITIAL QAF
+1EE34..1EE37  ; Lo #   [4] ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MATHEMATICAL INITIAL KHAH
+1EE39         ; Lo #       ARABIC MATHEMATICAL INITIAL DAD
+1EE3B         ; Lo #       ARABIC MATHEMATICAL INITIAL GHAIN
+1EE42         ; Lo #       ARABIC MATHEMATICAL TAILED JEEM
+1EE47         ; Lo #       ARABIC MATHEMATICAL TAILED HAH
+1EE49         ; Lo #       ARABIC MATHEMATICAL TAILED YEH
+1EE4B         ; Lo #       ARABIC MATHEMATICAL TAILED LAM
+1EE4D..1EE4F  ; Lo #   [3] ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHEMATICAL TAILED AIN
+1EE51..1EE52  ; Lo #   [2] ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEMATICAL TAILED QAF
+1EE54         ; Lo #       ARABIC MATHEMATICAL TAILED SHEEN
+1EE57         ; Lo #       ARABIC MATHEMATICAL TAILED KHAH
+1EE59         ; Lo #       ARABIC MATHEMATICAL TAILED DAD
+1EE5B         ; Lo #       ARABIC MATHEMATICAL TAILED GHAIN
+1EE5D         ; Lo #       ARABIC MATHEMATICAL TAILED DOTLESS NOON
+1EE5F         ; Lo #       ARABIC MATHEMATICAL TAILED DOTLESS QAF
+1EE61..1EE62  ; Lo #   [2] ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MATHEMATICAL STRETCHED JEEM
+1EE64         ; Lo #       ARABIC MATHEMATICAL STRETCHED HEH
+1EE67..1EE6A  ; Lo #   [4] ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MATHEMATICAL STRETCHED KAF
+1EE6C..1EE72  ; Lo #   [7] ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MATHEMATICAL STRETCHED QAF
+1EE74..1EE77  ; Lo #   [4] ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC MATHEMATICAL STRETCHED KHAH
+1EE79..1EE7C  ; Lo #   [4] ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MATHEMATICAL STRETCHED DOTLESS BEH
+1EE7E         ; Lo #       ARABIC MATHEMATICAL STRETCHED DOTLESS FEH
+1EE80..1EE89  ; Lo #  [10] ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHEMATICAL LOOPED YEH
+1EE8B..1EE9B  ; Lo #  [17] ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEMATICAL LOOPED GHAIN
+1EEA1..1EEA3  ; Lo #   [3] ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC MATHEMATICAL DOUBLE-STRUCK DAL
+1EEA5..1EEA9  ; Lo #   [5] ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC MATHEMATICAL DOUBLE-STRUCK YEH
+1EEAB..1EEBB  ; Lo #  [17] ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC MATHEMATICAL DOUBLE-STRUCK GHAIN
+20000..2A6DF  ; Lo # [42720] CJK UNIFIED IDEOGRAPH-20000..CJK UNIFIED IDEOGRAPH-2A6DF
+2A700..2B739  ; Lo # [4154] CJK UNIFIED IDEOGRAPH-2A700..CJK UNIFIED IDEOGRAPH-2B739
+2B740..2B81D  ; Lo # [222] CJK UNIFIED IDEOGRAPH-2B740..CJK UNIFIED IDEOGRAPH-2B81D
+2B820..2CEA1  ; Lo # [5762] CJK UNIFIED IDEOGRAPH-2B820..CJK UNIFIED IDEOGRAPH-2CEA1
+2CEB0..2EBE0  ; Lo # [7473] CJK UNIFIED IDEOGRAPH-2CEB0..CJK UNIFIED IDEOGRAPH-2EBE0
+2F800..2FA1D  ; Lo # [542] CJK COMPATIBILITY IDEOGRAPH-2F800..CJK COMPATIBILITY IDEOGRAPH-2FA1D
+30000..3134A  ; Lo # [4939] CJK UNIFIED IDEOGRAPH-30000..CJK UNIFIED IDEOGRAPH-3134A
+31350..323AF  ; Lo # [4192] CJK UNIFIED IDEOGRAPH-31350..CJK UNIFIED IDEOGRAPH-323AF
+
+# Total code points: 131612
+
+# ================================================
+
+# General_Category=Nonspacing_Mark
+
+0300..036F    ; Mn # [112] COMBINING GRAVE ACCENT..COMBINING LATIN SMALL LETTER X
+0483..0487    ; Mn #   [5] COMBINING CYRILLIC TITLO..COMBINING CYRILLIC POKRYTIE
+0591..05BD    ; Mn #  [45] HEBREW ACCENT ETNAHTA..HEBREW POINT METEG
+05BF          ; Mn #       HEBREW POINT RAFE
+05C1..05C2    ; Mn #   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; Mn #   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; Mn #       HEBREW POINT QAMATS QATAN
+0610..061A    ; Mn #  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+064B..065F    ; Mn #  [21] ARABIC FATHATAN..ARABIC WAVY HAMZA BELOW
+0670          ; Mn #       ARABIC LETTER SUPERSCRIPT ALEF
+06D6..06DC    ; Mn #   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06DF..06E4    ; Mn #   [6] ARABIC SMALL HIGH ROUNDED ZERO..ARABIC SMALL HIGH MADDA
+06E7..06E8    ; Mn #   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06EA..06ED    ; Mn #   [4] ARABIC EMPTY CENTRE LOW STOP..ARABIC SMALL LOW MEEM
+0711          ; Mn #       SYRIAC LETTER SUPERSCRIPT ALAPH
+0730..074A    ; Mn #  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
+07A6..07B0    ; Mn #  [11] THAANA ABAFILI..THAANA SUKUN
+07EB..07F3    ; Mn #   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07FD          ; Mn #       NKO DANTAYALAN
+0816..0819    ; Mn #   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
+081B..0823    ; Mn #   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0825..0827    ; Mn #   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0829..082D    ; Mn #   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
+0859..085B    ; Mn #   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
+0898..089F    ; Mn #   [8] ARABIC SMALL HIGH WORD AL-JUZ..ARABIC HALF MADDA OVER MADDA
+08CA..08E1    ; Mn #  [24] ARABIC SMALL HIGH FARSI YEH..ARABIC SMALL HIGH SIGN SAFHA
+08E3..0902    ; Mn #  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
+093A          ; Mn #       DEVANAGARI VOWEL SIGN OE
+093C          ; Mn #       DEVANAGARI SIGN NUKTA
+0941..0948    ; Mn #   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+094D          ; Mn #       DEVANAGARI SIGN VIRAMA
+0951..0957    ; Mn #   [7] DEVANAGARI STRESS SIGN UDATTA..DEVANAGARI VOWEL SIGN UUE
+0962..0963    ; Mn #   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0981          ; Mn #       BENGALI SIGN CANDRABINDU
+09BC          ; Mn #       BENGALI SIGN NUKTA
+09C1..09C4    ; Mn #   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09CD          ; Mn #       BENGALI SIGN VIRAMA
+09E2..09E3    ; Mn #   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09FE          ; Mn #       BENGALI SANDHI MARK
+0A01..0A02    ; Mn #   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A3C          ; Mn #       GURMUKHI SIGN NUKTA
+0A41..0A42    ; Mn #   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; Mn #   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4D    ; Mn #   [3] GURMUKHI VOWEL SIGN OO..GURMUKHI SIGN VIRAMA
+0A51          ; Mn #       GURMUKHI SIGN UDAAT
+0A70..0A71    ; Mn #   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A75          ; Mn #       GURMUKHI SIGN YAKASH
+0A81..0A82    ; Mn #   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0ABC          ; Mn #       GUJARATI SIGN NUKTA
+0AC1..0AC5    ; Mn #   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; Mn #   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0ACD          ; Mn #       GUJARATI SIGN VIRAMA
+0AE2..0AE3    ; Mn #   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AFA..0AFF    ; Mn #   [6] GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE NUKTA ABOVE
+0B01          ; Mn #       ORIYA SIGN CANDRABINDU
+0B3C          ; Mn #       ORIYA SIGN NUKTA
+0B3F          ; Mn #       ORIYA VOWEL SIGN I
+0B41..0B44    ; Mn #   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B4D          ; Mn #       ORIYA SIGN VIRAMA
+0B55..0B56    ; Mn #   [2] ORIYA SIGN OVERLINE..ORIYA AI LENGTH MARK
+0B62..0B63    ; Mn #   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B82          ; Mn #       TAMIL SIGN ANUSVARA
+0BC0          ; Mn #       TAMIL VOWEL SIGN II
+0BCD          ; Mn #       TAMIL SIGN VIRAMA
+0C00          ; Mn #       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C04          ; Mn #       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C3C          ; Mn #       TELUGU SIGN NUKTA
+0C3E..0C40    ; Mn #   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C46..0C48    ; Mn #   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4D    ; Mn #   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
+0C55..0C56    ; Mn #   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C62..0C63    ; Mn #   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C81          ; Mn #       KANNADA SIGN CANDRABINDU
+0CBC          ; Mn #       KANNADA SIGN NUKTA
+0CBF          ; Mn #       KANNADA VOWEL SIGN I
+0CC6          ; Mn #       KANNADA VOWEL SIGN E
+0CCC..0CCD    ; Mn #   [2] KANNADA VOWEL SIGN AU..KANNADA SIGN VIRAMA
+0CE2..0CE3    ; Mn #   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0D00..0D01    ; Mn #   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D3B..0D3C    ; Mn #   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D41..0D44    ; Mn #   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D4D          ; Mn #       MALAYALAM SIGN VIRAMA
+0D62..0D63    ; Mn #   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D81          ; Mn #       SINHALA SIGN CANDRABINDU
+0DCA          ; Mn #       SINHALA SIGN AL-LAKUNA
+0DD2..0DD4    ; Mn #   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; Mn #       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0E31          ; Mn #       THAI CHARACTER MAI HAN-AKAT
+0E34..0E3A    ; Mn #   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E47..0E4E    ; Mn #   [8] THAI CHARACTER MAITAIKHU..THAI CHARACTER YAMAKKAN
+0EB1          ; Mn #       LAO VOWEL SIGN MAI KAN
+0EB4..0EBC    ; Mn #   [9] LAO VOWEL SIGN I..LAO SEMIVOWEL SIGN LO
+0EC8..0ECE    ; Mn #   [7] LAO TONE MAI EK..LAO YAMAKKAN
+0F18..0F19    ; Mn #   [2] TIBETAN ASTROLOGICAL SIGN -KHYUD PA..TIBETAN ASTROLOGICAL SIGN SDONG TSHUGS
+0F35          ; Mn #       TIBETAN MARK NGAS BZUNG NYI ZLA
+0F37          ; Mn #       TIBETAN MARK NGAS BZUNG SGOR RTAGS
+0F39          ; Mn #       TIBETAN MARK TSA -PHRU
+0F71..0F7E    ; Mn #  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F80..0F84    ; Mn #   [5] TIBETAN VOWEL SIGN REVERSED I..TIBETAN MARK HALANTA
+0F86..0F87    ; Mn #   [2] TIBETAN SIGN LCI RTAGS..TIBETAN SIGN YANG RTAGS
+0F8D..0F97    ; Mn #  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; Mn #  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+0FC6          ; Mn #       TIBETAN SYMBOL PADMA GDAN
+102D..1030    ; Mn #   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1032..1037    ; Mn #   [6] MYANMAR VOWEL SIGN AI..MYANMAR SIGN DOT BELOW
+1039..103A    ; Mn #   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+103D..103E    ; Mn #   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+1058..1059    ; Mn #   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105E..1060    ; Mn #   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1071..1074    ; Mn #   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1082          ; Mn #       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1085..1086    ; Mn #   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+108D          ; Mn #       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+109D          ; Mn #       MYANMAR VOWEL SIGN AITON AI
+135D..135F    ; Mn #   [3] ETHIOPIC COMBINING GEMINATION AND VOWEL LENGTH MARK..ETHIOPIC COMBINING GEMINATION MARK
+1712..1714    ; Mn #   [3] TAGALOG VOWEL SIGN I..TAGALOG SIGN VIRAMA
+1732..1733    ; Mn #   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1752..1753    ; Mn #   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1772..1773    ; Mn #   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+17B4..17B5    ; Mn #   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+17B7..17BD    ; Mn #   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17C6          ; Mn #       KHMER SIGN NIKAHIT
+17C9..17D3    ; Mn #  [11] KHMER SIGN MUUSIKATOAN..KHMER SIGN BATHAMASAT
+17DD          ; Mn #       KHMER SIGN ATTHACAN
+180B..180D    ; Mn #   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180F          ; Mn #       MONGOLIAN FREE VARIATION SELECTOR FOUR
+1885..1886    ; Mn #   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+18A9          ; Mn #       MONGOLIAN LETTER ALI GALI DAGALGA
+1920..1922    ; Mn #   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1927..1928    ; Mn #   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1932          ; Mn #       LIMBU SMALL LETTER ANUSVARA
+1939..193B    ; Mn #   [3] LIMBU SIGN MUKPHRENG..LIMBU SIGN SA-I
+1A17..1A18    ; Mn #   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A1B          ; Mn #       BUGINESE VOWEL SIGN AE
+1A56          ; Mn #       TAI THAM CONSONANT SIGN MEDIAL LA
+1A58..1A5E    ; Mn #   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A60          ; Mn #       TAI THAM SIGN SAKOT
+1A62          ; Mn #       TAI THAM VOWEL SIGN MAI SAT
+1A65..1A6C    ; Mn #   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A73..1A7C    ; Mn #  [10] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN KHUEN-LUE KARAN
+1A7F          ; Mn #       TAI THAM COMBINING CRYPTOGRAMMIC DOT
+1AB0..1ABD    ; Mn #  [14] COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBINING PARENTHESES BELOW
+1ABF..1ACE    ; Mn #  [16] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; Mn #   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B34          ; Mn #       BALINESE SIGN REREKAN
+1B36..1B3A    ; Mn #   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3C          ; Mn #       BALINESE VOWEL SIGN LA LENGA
+1B42          ; Mn #       BALINESE VOWEL SIGN PEPET
+1B6B..1B73    ; Mn #   [9] BALINESE MUSICAL SYMBOL COMBINING TEGEH..BALINESE MUSICAL SYMBOL COMBINING GONG
+1B80..1B81    ; Mn #   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1BA2..1BA5    ; Mn #   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA8..1BA9    ; Mn #   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAB..1BAD    ; Mn #   [3] SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BE6          ; Mn #       BATAK SIGN TOMPI
+1BE8..1BE9    ; Mn #   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BED          ; Mn #       BATAK VOWEL SIGN KARO O
+1BEF..1BF1    ; Mn #   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1C2C..1C33    ; Mn #   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C36..1C37    ; Mn #   [2] LEPCHA SIGN RAN..LEPCHA SIGN NUKTA
+1CD0..1CD2    ; Mn #   [3] VEDIC TONE KARSHANA..VEDIC TONE PRENKHA
+1CD4..1CE0    ; Mn #  [13] VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC TONE RIGVEDIC KASHMIRI INDEPENDENT SVARITA
+1CE2..1CE8    ; Mn #   [7] VEDIC SIGN VISARGA SVARITA..VEDIC SIGN VISARGA ANUDATTA WITH TAIL
+1CED          ; Mn #       VEDIC SIGN TIRYAK
+1CF4          ; Mn #       VEDIC TONE CANDRA ABOVE
+1CF8..1CF9    ; Mn #   [2] VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING ABOVE
+1DC0..1DFF    ; Mn #  [64] COMBINING DOTTED GRAVE ACCENT..COMBINING RIGHT ARROWHEAD AND DOWN ARROWHEAD BELOW
+20D0..20DC    ; Mn #  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20E1          ; Mn #       COMBINING LEFT RIGHT ARROW ABOVE
+20E5..20F0    ; Mn #  [12] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING ASTERISK ABOVE
+2CEF..2CF1    ; Mn #   [3] COPTIC COMBINING NI ABOVE..COPTIC COMBINING SPIRITUS LENIS
+2D7F          ; Mn #       TIFINAGH CONSONANT JOINER
+2DE0..2DFF    ; Mn #  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+302A..302D    ; Mn #   [4] IDEOGRAPHIC LEVEL TONE MARK..IDEOGRAPHIC ENTERING TONE MARK
+3099..309A    ; Mn #   [2] COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK..COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+A66F          ; Mn #       COMBINING CYRILLIC VZMET
+A674..A67D    ; Mn #  [10] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC PAYEROK
+A69E..A69F    ; Mn #   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6F0..A6F1    ; Mn #   [2] BAMUM COMBINING MARK KOQNDON..BAMUM COMBINING MARK TUKWENTIS
+A802          ; Mn #       SYLOTI NAGRI SIGN DVISVARA
+A806          ; Mn #       SYLOTI NAGRI SIGN HASANTA
+A80B          ; Mn #       SYLOTI NAGRI SIGN ANUSVARA
+A825..A826    ; Mn #   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A82C          ; Mn #       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A8C4..A8C5    ; Mn #   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
+A8E0..A8F1    ; Mn #  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8FF          ; Mn #       DEVANAGARI VOWEL SIGN AY
+A926..A92D    ; Mn #   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
+A947..A951    ; Mn #  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A980..A982    ; Mn #   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A9B3          ; Mn #       JAVANESE SIGN CECAK TELU
+A9B6..A9B9    ; Mn #   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BC..A9BD    ; Mn #   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9E5          ; Mn #       MYANMAR SIGN SHAN SAW
+AA29..AA2E    ; Mn #   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA31..AA32    ; Mn #   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA35..AA36    ; Mn #   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA43          ; Mn #       CHAM CONSONANT SIGN FINAL NG
+AA4C          ; Mn #       CHAM CONSONANT SIGN FINAL M
+AA7C          ; Mn #       MYANMAR SIGN TAI LAING TONE-2
+AAB0          ; Mn #       TAI VIET MAI KANG
+AAB2..AAB4    ; Mn #   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB7..AAB8    ; Mn #   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AABE..AABF    ; Mn #   [2] TAI VIET VOWEL AM..TAI VIET TONE MAI EK
+AAC1          ; Mn #       TAI VIET TONE MAI THO
+AAEC..AAED    ; Mn #   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAF6          ; Mn #       MEETEI MAYEK VIRAMA
+ABE5          ; Mn #       MEETEI MAYEK VOWEL SIGN ANAP
+ABE8          ; Mn #       MEETEI MAYEK VOWEL SIGN UNAP
+ABED          ; Mn #       MEETEI MAYEK APUN IYEK
+FB1E          ; Mn #       HEBREW POINT JUDEO-SPANISH VARIKA
+FE00..FE0F    ; Mn #  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FE20..FE2F    ; Mn #  [16] COMBINING LIGATURE LEFT HALF..COMBINING CYRILLIC TITLO RIGHT HALF
+101FD         ; Mn #       PHAISTOS DISC SIGN COMBINING OBLIQUE STROKE
+102E0         ; Mn #       COPTIC EPACT THOUSANDS MARK
+10376..1037A  ; Mn #   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10A01..10A03  ; Mn #   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; Mn #   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; Mn #   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A38..10A3A  ; Mn #   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
+10A3F         ; Mn #       KHAROSHTHI VIRAMA
+10AE5..10AE6  ; Mn #   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10D24..10D27  ; Mn #   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10EAB..10EAC  ; Mn #   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EFD..10EFF  ; Mn #   [3] ARABIC SMALL LOW WORD SAKTA..ARABIC SMALL LOW WORD MADDA
+10F46..10F50  ; Mn #  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
+10F82..10F85  ; Mn #   [4] OLD UYGHUR COMBINING DOT ABOVE..OLD UYGHUR COMBINING TWO DOTS BELOW
+11001         ; Mn #       BRAHMI SIGN ANUSVARA
+11038..11046  ; Mn #  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
+11070         ; Mn #       BRAHMI SIGN OLD TAMIL VIRAMA
+11073..11074  ; Mn #   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+1107F..11081  ; Mn #   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
+110B3..110B6  ; Mn #   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B9..110BA  ; Mn #   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
+110C2         ; Mn #       KAITHI VOWEL SIGN VOCALIC R
+11100..11102  ; Mn #   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11127..1112B  ; Mn #   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112D..11134  ; Mn #   [8] CHAKMA VOWEL SIGN AI..CHAKMA MAAYYAA
+11173         ; Mn #       MAHAJANI SIGN NUKTA
+11180..11181  ; Mn #   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+111B6..111BE  ; Mn #   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111C9..111CC  ; Mn #   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
+111CF         ; Mn #       SHARADA SIGN INVERTED CANDRABINDU
+1122F..11231  ; Mn #   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11234         ; Mn #       KHOJKI SIGN ANUSVARA
+11236..11237  ; Mn #   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
+1123E         ; Mn #       KHOJKI SIGN SUKUN
+11241         ; Mn #       KHOJKI VOWEL SIGN VOCALIC R
+112DF         ; Mn #       KHUDAWADI SIGN ANUSVARA
+112E3..112EA  ; Mn #   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
+11300..11301  ; Mn #   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+1133B..1133C  ; Mn #   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
+11340         ; Mn #       GRANTHA VOWEL SIGN II
+11366..1136C  ; Mn #   [7] COMBINING GRANTHA DIGIT ZERO..COMBINING GRANTHA DIGIT SIX
+11370..11374  ; Mn #   [5] COMBINING GRANTHA LETTER A..COMBINING GRANTHA LETTER PA
+11438..1143F  ; Mn #   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11442..11444  ; Mn #   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
+11446         ; Mn #       NEWA SIGN NUKTA
+1145E         ; Mn #       NEWA SANDHI MARK
+114B3..114B8  ; Mn #   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114BA         ; Mn #       TIRHUTA VOWEL SIGN SHORT E
+114BF..114C0  ; Mn #   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C2..114C3  ; Mn #   [2] TIRHUTA SIGN VIRAMA..TIRHUTA SIGN NUKTA
+115B2..115B5  ; Mn #   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115BC..115BD  ; Mn #   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BF..115C0  ; Mn #   [2] SIDDHAM SIGN VIRAMA..SIDDHAM SIGN NUKTA
+115DC..115DD  ; Mn #   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11633..1163A  ; Mn #   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163D         ; Mn #       MODI SIGN ANUSVARA
+1163F..11640  ; Mn #   [2] MODI SIGN VIRAMA..MODI SIGN ARDHACANDRA
+116AB         ; Mn #       TAKRI SIGN ANUSVARA
+116AD         ; Mn #       TAKRI VOWEL SIGN AA
+116B0..116B5  ; Mn #   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B7         ; Mn #       TAKRI SIGN NUKTA
+1171D..1171F  ; Mn #   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11722..11725  ; Mn #   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11727..1172B  ; Mn #   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
+1182F..11837  ; Mn #   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11839..1183A  ; Mn #   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+1193B..1193C  ; Mn #   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193E         ; Mn #       DIVES AKURU VIRAMA
+11943         ; Mn #       DIVES AKURU SIGN NUKTA
+119D4..119D7  ; Mn #   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; Mn #   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119E0         ; Mn #       NANDINAGARI SIGN VIRAMA
+11A01..11A0A  ; Mn #  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A33..11A38  ; Mn #   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
+11A3B..11A3E  ; Mn #   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A47         ; Mn #       ZANABAZAR SQUARE SUBJOINER
+11A51..11A56  ; Mn #   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A59..11A5B  ; Mn #   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A8A..11A96  ; Mn #  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A98..11A99  ; Mn #   [2] SOYOMBO GEMINATION MARK..SOYOMBO SUBJOINER
+11C30..11C36  ; Mn #   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; Mn #   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3F         ; Mn #       BHAIKSUKI SIGN VIRAMA
+11C92..11CA7  ; Mn #  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CAA..11CB0  ; Mn #   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB2..11CB3  ; Mn #   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB5..11CB6  ; Mn #   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D31..11D36  ; Mn #   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; Mn #       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; Mn #   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D45  ; Mn #   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
+11D47         ; Mn #       MASARAM GONDI RA-KARA
+11D90..11D91  ; Mn #   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D95         ; Mn #       GUNJALA GONDI SIGN ANUSVARA
+11D97         ; Mn #       GUNJALA GONDI VIRAMA
+11EF3..11EF4  ; Mn #   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11F00..11F01  ; Mn #   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F36..11F3A  ; Mn #   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F40         ; Mn #       KAWI VOWEL SIGN EU
+11F42         ; Mn #       KAWI CONJOINER
+13440         ; Mn #       EGYPTIAN HIEROGLYPH MIRROR HORIZONTALLY
+13447..13455  ; Mn #  [15] EGYPTIAN HIEROGLYPH MODIFIER DAMAGED AT TOP START..EGYPTIAN HIEROGLYPH MODIFIER DAMAGED
+16AF0..16AF4  ; Mn #   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
+16B30..16B36  ; Mn #   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
+16F4F         ; Mn #       MIAO SIGN CONSONANT MODIFIER BAR
+16F8F..16F92  ; Mn #   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16FE4         ; Mn #       KHITAN SMALL SCRIPT FILLER
+1BC9D..1BC9E  ; Mn #   [2] DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUBLE MARK
+1CF00..1CF2D  ; Mn #  [46] ZNAMENNY COMBINING MARK GORAZDO NIZKO S KRYZHEM ON LEFT..ZNAMENNY COMBINING MARK KRYZH ON LEFT
+1CF30..1CF46  ; Mn #  [23] ZNAMENNY COMBINING TONAL RANGE MARK MRACHNO..ZNAMENNY PRIZNAK MODIFIER ROG
+1D167..1D169  ; Mn #   [3] MUSICAL SYMBOL COMBINING TREMOLO-1..MUSICAL SYMBOL COMBINING TREMOLO-3
+1D17B..1D182  ; Mn #   [8] MUSICAL SYMBOL COMBINING ACCENT..MUSICAL SYMBOL COMBINING LOURE
+1D185..1D18B  ; Mn #   [7] MUSICAL SYMBOL COMBINING DOIT..MUSICAL SYMBOL COMBINING TRIPLE TONGUE
+1D1AA..1D1AD  ; Mn #   [4] MUSICAL SYMBOL COMBINING DOWN BOW..MUSICAL SYMBOL COMBINING SNAP PIZZICATO
+1D242..1D244  ; Mn #   [3] COMBINING GREEK MUSICAL TRISEME..COMBINING GREEK MUSICAL PENTASEME
+1DA00..1DA36  ; Mn #  [55] SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING IN
+1DA3B..1DA6C  ; Mn #  [50] SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
+1DA75         ; Mn #       SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
+1DA84         ; Mn #       SIGNWRITING LOCATION HEAD NECK
+1DA9B..1DA9F  ; Mn #   [5] SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL MODIFIER-6
+1DAA1..1DAAF  ; Mn #  [15] SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING ROTATION MODIFIER-16
+1E000..1E006  ; Mn #   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; Mn #  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; Mn #   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; Mn #   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; Mn #   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E08F         ; Mn #       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E130..1E136  ; Mn #   [7] NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACHUE HMONG TONE-D
+1E2AE         ; Mn #       TOTO SIGN RISING TONE
+1E2EC..1E2EF  ; Mn #   [4] WANCHO TONE TUP..WANCHO TONE KOINI
+1E4EC..1E4EF  ; Mn #   [4] NAG MUNDARI SIGN MUHOR..NAG MUNDARI SIGN SUTUH
+1E8D0..1E8D6  ; Mn #   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
+1E944..1E94A  ; Mn #   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+E0100..E01EF  ; Mn # [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+
+# Total code points: 1985
+
+# ================================================
+
+# General_Category=Enclosing_Mark
+
+0488..0489    ; Me #   [2] COMBINING CYRILLIC HUNDRED THOUSANDS SIGN..COMBINING CYRILLIC MILLIONS SIGN
+1ABE          ; Me #       COMBINING PARENTHESES OVERLAY
+20DD..20E0    ; Me #   [4] COMBINING ENCLOSING CIRCLE..COMBINING ENCLOSING CIRCLE BACKSLASH
+20E2..20E4    ; Me #   [3] COMBINING ENCLOSING SCREEN..COMBINING ENCLOSING UPWARD POINTING TRIANGLE
+A670..A672    ; Me #   [3] COMBINING CYRILLIC TEN MILLIONS SIGN..COMBINING CYRILLIC THOUSAND MILLIONS SIGN
+
+# Total code points: 13
+
+# ================================================
+
+# General_Category=Spacing_Mark
+
+0903          ; Mc #       DEVANAGARI SIGN VISARGA
+093B          ; Mc #       DEVANAGARI VOWEL SIGN OOE
+093E..0940    ; Mc #   [3] DEVANAGARI VOWEL SIGN AA..DEVANAGARI VOWEL SIGN II
+0949..094C    ; Mc #   [4] DEVANAGARI VOWEL SIGN CANDRA O..DEVANAGARI VOWEL SIGN AU
+094E..094F    ; Mc #   [2] DEVANAGARI VOWEL SIGN PRISHTHAMATRA E..DEVANAGARI VOWEL SIGN AW
+0982..0983    ; Mc #   [2] BENGALI SIGN ANUSVARA..BENGALI SIGN VISARGA
+09BE..09C0    ; Mc #   [3] BENGALI VOWEL SIGN AA..BENGALI VOWEL SIGN II
+09C7..09C8    ; Mc #   [2] BENGALI VOWEL SIGN E..BENGALI VOWEL SIGN AI
+09CB..09CC    ; Mc #   [2] BENGALI VOWEL SIGN O..BENGALI VOWEL SIGN AU
+09D7          ; Mc #       BENGALI AU LENGTH MARK
+0A03          ; Mc #       GURMUKHI SIGN VISARGA
+0A3E..0A40    ; Mc #   [3] GURMUKHI VOWEL SIGN AA..GURMUKHI VOWEL SIGN II
+0A83          ; Mc #       GUJARATI SIGN VISARGA
+0ABE..0AC0    ; Mc #   [3] GUJARATI VOWEL SIGN AA..GUJARATI VOWEL SIGN II
+0AC9          ; Mc #       GUJARATI VOWEL SIGN CANDRA O
+0ACB..0ACC    ; Mc #   [2] GUJARATI VOWEL SIGN O..GUJARATI VOWEL SIGN AU
+0B02..0B03    ; Mc #   [2] ORIYA SIGN ANUSVARA..ORIYA SIGN VISARGA
+0B3E          ; Mc #       ORIYA VOWEL SIGN AA
+0B40          ; Mc #       ORIYA VOWEL SIGN II
+0B47..0B48    ; Mc #   [2] ORIYA VOWEL SIGN E..ORIYA VOWEL SIGN AI
+0B4B..0B4C    ; Mc #   [2] ORIYA VOWEL SIGN O..ORIYA VOWEL SIGN AU
+0B57          ; Mc #       ORIYA AU LENGTH MARK
+0BBE..0BBF    ; Mc #   [2] TAMIL VOWEL SIGN AA..TAMIL VOWEL SIGN I
+0BC1..0BC2    ; Mc #   [2] TAMIL VOWEL SIGN U..TAMIL VOWEL SIGN UU
+0BC6..0BC8    ; Mc #   [3] TAMIL VOWEL SIGN E..TAMIL VOWEL SIGN AI
+0BCA..0BCC    ; Mc #   [3] TAMIL VOWEL SIGN O..TAMIL VOWEL SIGN AU
+0BD7          ; Mc #       TAMIL AU LENGTH MARK
+0C01..0C03    ; Mc #   [3] TELUGU SIGN CANDRABINDU..TELUGU SIGN VISARGA
+0C41..0C44    ; Mc #   [4] TELUGU VOWEL SIGN U..TELUGU VOWEL SIGN VOCALIC RR
+0C82..0C83    ; Mc #   [2] KANNADA SIGN ANUSVARA..KANNADA SIGN VISARGA
+0CBE          ; Mc #       KANNADA VOWEL SIGN AA
+0CC0..0CC4    ; Mc #   [5] KANNADA VOWEL SIGN II..KANNADA VOWEL SIGN VOCALIC RR
+0CC7..0CC8    ; Mc #   [2] KANNADA VOWEL SIGN EE..KANNADA VOWEL SIGN AI
+0CCA..0CCB    ; Mc #   [2] KANNADA VOWEL SIGN O..KANNADA VOWEL SIGN OO
+0CD5..0CD6    ; Mc #   [2] KANNADA LENGTH MARK..KANNADA AI LENGTH MARK
+0CF3          ; Mc #       KANNADA SIGN COMBINING ANUSVARA ABOVE RIGHT
+0D02..0D03    ; Mc #   [2] MALAYALAM SIGN ANUSVARA..MALAYALAM SIGN VISARGA
+0D3E..0D40    ; Mc #   [3] MALAYALAM VOWEL SIGN AA..MALAYALAM VOWEL SIGN II
+0D46..0D48    ; Mc #   [3] MALAYALAM VOWEL SIGN E..MALAYALAM VOWEL SIGN AI
+0D4A..0D4C    ; Mc #   [3] MALAYALAM VOWEL SIGN O..MALAYALAM VOWEL SIGN AU
+0D57          ; Mc #       MALAYALAM AU LENGTH MARK
+0D82..0D83    ; Mc #   [2] SINHALA SIGN ANUSVARAYA..SINHALA SIGN VISARGAYA
+0DCF..0DD1    ; Mc #   [3] SINHALA VOWEL SIGN AELA-PILLA..SINHALA VOWEL SIGN DIGA AEDA-PILLA
+0DD8..0DDF    ; Mc #   [8] SINHALA VOWEL SIGN GAETTA-PILLA..SINHALA VOWEL SIGN GAYANUKITTA
+0DF2..0DF3    ; Mc #   [2] SINHALA VOWEL SIGN DIGA GAETTA-PILLA..SINHALA VOWEL SIGN DIGA GAYANUKITTA
+0F3E..0F3F    ; Mc #   [2] TIBETAN SIGN YAR TSHES..TIBETAN SIGN MAR TSHES
+0F7F          ; Mc #       TIBETAN SIGN RNAM BCAD
+102B..102C    ; Mc #   [2] MYANMAR VOWEL SIGN TALL AA..MYANMAR VOWEL SIGN AA
+1031          ; Mc #       MYANMAR VOWEL SIGN E
+1038          ; Mc #       MYANMAR SIGN VISARGA
+103B..103C    ; Mc #   [2] MYANMAR CONSONANT SIGN MEDIAL YA..MYANMAR CONSONANT SIGN MEDIAL RA
+1056..1057    ; Mc #   [2] MYANMAR VOWEL SIGN VOCALIC R..MYANMAR VOWEL SIGN VOCALIC RR
+1062..1064    ; Mc #   [3] MYANMAR VOWEL SIGN SGAW KAREN EU..MYANMAR TONE MARK SGAW KAREN KE PHO
+1067..106D    ; Mc #   [7] MYANMAR VOWEL SIGN WESTERN PWO KAREN EU..MYANMAR SIGN WESTERN PWO KAREN TONE-5
+1083..1084    ; Mc #   [2] MYANMAR VOWEL SIGN SHAN AA..MYANMAR VOWEL SIGN SHAN E
+1087..108C    ; Mc #   [6] MYANMAR SIGN SHAN TONE-2..MYANMAR SIGN SHAN COUNCIL TONE-3
+108F          ; Mc #       MYANMAR SIGN RUMAI PALAUNG TONE-5
+109A..109C    ; Mc #   [3] MYANMAR SIGN KHAMTI TONE-1..MYANMAR VOWEL SIGN AITON A
+1715          ; Mc #       TAGALOG SIGN PAMUDPOD
+1734          ; Mc #       HANUNOO SIGN PAMUDPOD
+17B6          ; Mc #       KHMER VOWEL SIGN AA
+17BE..17C5    ; Mc #   [8] KHMER VOWEL SIGN OE..KHMER VOWEL SIGN AU
+17C7..17C8    ; Mc #   [2] KHMER SIGN REAHMUK..KHMER SIGN YUUKALEAPINTU
+1923..1926    ; Mc #   [4] LIMBU VOWEL SIGN EE..LIMBU VOWEL SIGN AU
+1929..192B    ; Mc #   [3] LIMBU SUBJOINED LETTER YA..LIMBU SUBJOINED LETTER WA
+1930..1931    ; Mc #   [2] LIMBU SMALL LETTER KA..LIMBU SMALL LETTER NGA
+1933..1938    ; Mc #   [6] LIMBU SMALL LETTER TA..LIMBU SMALL LETTER LA
+1A19..1A1A    ; Mc #   [2] BUGINESE VOWEL SIGN E..BUGINESE VOWEL SIGN O
+1A55          ; Mc #       TAI THAM CONSONANT SIGN MEDIAL RA
+1A57          ; Mc #       TAI THAM CONSONANT SIGN LA TANG LAI
+1A61          ; Mc #       TAI THAM VOWEL SIGN A
+1A63..1A64    ; Mc #   [2] TAI THAM VOWEL SIGN AA..TAI THAM VOWEL SIGN TALL AA
+1A6D..1A72    ; Mc #   [6] TAI THAM VOWEL SIGN OY..TAI THAM VOWEL SIGN THAM AI
+1B04          ; Mc #       BALINESE SIGN BISAH
+1B35          ; Mc #       BALINESE VOWEL SIGN TEDUNG
+1B3B          ; Mc #       BALINESE VOWEL SIGN RA REPA TEDUNG
+1B3D..1B41    ; Mc #   [5] BALINESE VOWEL SIGN LA LENGA TEDUNG..BALINESE VOWEL SIGN TALING REPA TEDUNG
+1B43..1B44    ; Mc #   [2] BALINESE VOWEL SIGN PEPET TEDUNG..BALINESE ADEG ADEG
+1B82          ; Mc #       SUNDANESE SIGN PANGWISAD
+1BA1          ; Mc #       SUNDANESE CONSONANT SIGN PAMINGKAL
+1BA6..1BA7    ; Mc #   [2] SUNDANESE VOWEL SIGN PANAELAENG..SUNDANESE VOWEL SIGN PANOLONG
+1BAA          ; Mc #       SUNDANESE SIGN PAMAAEH
+1BE7          ; Mc #       BATAK VOWEL SIGN E
+1BEA..1BEC    ; Mc #   [3] BATAK VOWEL SIGN I..BATAK VOWEL SIGN O
+1BEE          ; Mc #       BATAK VOWEL SIGN U
+1BF2..1BF3    ; Mc #   [2] BATAK PANGOLAT..BATAK PANONGONAN
+1C24..1C2B    ; Mc #   [8] LEPCHA SUBJOINED LETTER YA..LEPCHA VOWEL SIGN UU
+1C34..1C35    ; Mc #   [2] LEPCHA CONSONANT SIGN NYIN-DO..LEPCHA CONSONANT SIGN KANG
+1CE1          ; Mc #       VEDIC TONE ATHARVAVEDIC INDEPENDENT SVARITA
+1CF7          ; Mc #       VEDIC SIGN ATIKRAMA
+302E..302F    ; Mc #   [2] HANGUL SINGLE DOT TONE MARK..HANGUL DOUBLE DOT TONE MARK
+A823..A824    ; Mc #   [2] SYLOTI NAGRI VOWEL SIGN A..SYLOTI NAGRI VOWEL SIGN I
+A827          ; Mc #       SYLOTI NAGRI VOWEL SIGN OO
+A880..A881    ; Mc #   [2] SAURASHTRA SIGN ANUSVARA..SAURASHTRA SIGN VISARGA
+A8B4..A8C3    ; Mc #  [16] SAURASHTRA CONSONANT SIGN HAARU..SAURASHTRA VOWEL SIGN AU
+A952..A953    ; Mc #   [2] REJANG CONSONANT SIGN H..REJANG VIRAMA
+A983          ; Mc #       JAVANESE SIGN WIGNYAN
+A9B4..A9B5    ; Mc #   [2] JAVANESE VOWEL SIGN TARUNG..JAVANESE VOWEL SIGN TOLONG
+A9BA..A9BB    ; Mc #   [2] JAVANESE VOWEL SIGN TALING..JAVANESE VOWEL SIGN DIRGA MURE
+A9BE..A9C0    ; Mc #   [3] JAVANESE CONSONANT SIGN PENGKAL..JAVANESE PANGKON
+AA2F..AA30    ; Mc #   [2] CHAM VOWEL SIGN O..CHAM VOWEL SIGN AI
+AA33..AA34    ; Mc #   [2] CHAM CONSONANT SIGN YA..CHAM CONSONANT SIGN RA
+AA4D          ; Mc #       CHAM CONSONANT SIGN FINAL H
+AA7B          ; Mc #       MYANMAR SIGN PAO KAREN TONE
+AA7D          ; Mc #       MYANMAR SIGN TAI LAING TONE-5
+AAEB          ; Mc #       MEETEI MAYEK VOWEL SIGN II
+AAEE..AAEF    ; Mc #   [2] MEETEI MAYEK VOWEL SIGN AU..MEETEI MAYEK VOWEL SIGN AAU
+AAF5          ; Mc #       MEETEI MAYEK VOWEL SIGN VISARGA
+ABE3..ABE4    ; Mc #   [2] MEETEI MAYEK VOWEL SIGN ONAP..MEETEI MAYEK VOWEL SIGN INAP
+ABE6..ABE7    ; Mc #   [2] MEETEI MAYEK VOWEL SIGN YENAP..MEETEI MAYEK VOWEL SIGN SOUNAP
+ABE9..ABEA    ; Mc #   [2] MEETEI MAYEK VOWEL SIGN CHEINAP..MEETEI MAYEK VOWEL SIGN NUNG
+ABEC          ; Mc #       MEETEI MAYEK LUM IYEK
+11000         ; Mc #       BRAHMI SIGN CANDRABINDU
+11002         ; Mc #       BRAHMI SIGN VISARGA
+11082         ; Mc #       KAITHI SIGN VISARGA
+110B0..110B2  ; Mc #   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
+110B7..110B8  ; Mc #   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
+1112C         ; Mc #       CHAKMA VOWEL SIGN E
+11145..11146  ; Mc #   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
+11182         ; Mc #       SHARADA SIGN VISARGA
+111B3..111B5  ; Mc #   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
+111BF..111C0  ; Mc #   [2] SHARADA VOWEL SIGN AU..SHARADA SIGN VIRAMA
+111CE         ; Mc #       SHARADA VOWEL SIGN PRISHTHAMATRA E
+1122C..1122E  ; Mc #   [3] KHOJKI VOWEL SIGN AA..KHOJKI VOWEL SIGN II
+11232..11233  ; Mc #   [2] KHOJKI VOWEL SIGN O..KHOJKI VOWEL SIGN AU
+11235         ; Mc #       KHOJKI SIGN VIRAMA
+112E0..112E2  ; Mc #   [3] KHUDAWADI VOWEL SIGN AA..KHUDAWADI VOWEL SIGN II
+11302..11303  ; Mc #   [2] GRANTHA SIGN ANUSVARA..GRANTHA SIGN VISARGA
+1133E..1133F  ; Mc #   [2] GRANTHA VOWEL SIGN AA..GRANTHA VOWEL SIGN I
+11341..11344  ; Mc #   [4] GRANTHA VOWEL SIGN U..GRANTHA VOWEL SIGN VOCALIC RR
+11347..11348  ; Mc #   [2] GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
+1134B..1134D  ; Mc #   [3] GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA
+11357         ; Mc #       GRANTHA AU LENGTH MARK
+11362..11363  ; Mc #   [2] GRANTHA VOWEL SIGN VOCALIC L..GRANTHA VOWEL SIGN VOCALIC LL
+11435..11437  ; Mc #   [3] NEWA VOWEL SIGN AA..NEWA VOWEL SIGN II
+11440..11441  ; Mc #   [2] NEWA VOWEL SIGN O..NEWA VOWEL SIGN AU
+11445         ; Mc #       NEWA SIGN VISARGA
+114B0..114B2  ; Mc #   [3] TIRHUTA VOWEL SIGN AA..TIRHUTA VOWEL SIGN II
+114B9         ; Mc #       TIRHUTA VOWEL SIGN E
+114BB..114BE  ; Mc #   [4] TIRHUTA VOWEL SIGN AI..TIRHUTA VOWEL SIGN AU
+114C1         ; Mc #       TIRHUTA SIGN VISARGA
+115AF..115B1  ; Mc #   [3] SIDDHAM VOWEL SIGN AA..SIDDHAM VOWEL SIGN II
+115B8..115BB  ; Mc #   [4] SIDDHAM VOWEL SIGN E..SIDDHAM VOWEL SIGN AU
+115BE         ; Mc #       SIDDHAM SIGN VISARGA
+11630..11632  ; Mc #   [3] MODI VOWEL SIGN AA..MODI VOWEL SIGN II
+1163B..1163C  ; Mc #   [2] MODI VOWEL SIGN O..MODI VOWEL SIGN AU
+1163E         ; Mc #       MODI SIGN VISARGA
+116AC         ; Mc #       TAKRI SIGN VISARGA
+116AE..116AF  ; Mc #   [2] TAKRI VOWEL SIGN I..TAKRI VOWEL SIGN II
+116B6         ; Mc #       TAKRI SIGN VIRAMA
+11720..11721  ; Mc #   [2] AHOM VOWEL SIGN A..AHOM VOWEL SIGN AA
+11726         ; Mc #       AHOM VOWEL SIGN E
+1182C..1182E  ; Mc #   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+11838         ; Mc #       DOGRA SIGN VISARGA
+11930..11935  ; Mc #   [6] DIVES AKURU VOWEL SIGN AA..DIVES AKURU VOWEL SIGN E
+11937..11938  ; Mc #   [2] DIVES AKURU VOWEL SIGN AI..DIVES AKURU VOWEL SIGN O
+1193D         ; Mc #       DIVES AKURU SIGN HALANTA
+11940         ; Mc #       DIVES AKURU MEDIAL YA
+11942         ; Mc #       DIVES AKURU MEDIAL RA
+119D1..119D3  ; Mc #   [3] NANDINAGARI VOWEL SIGN AA..NANDINAGARI VOWEL SIGN II
+119DC..119DF  ; Mc #   [4] NANDINAGARI VOWEL SIGN O..NANDINAGARI SIGN VISARGA
+119E4         ; Mc #       NANDINAGARI VOWEL SIGN PRISHTHAMATRA E
+11A39         ; Mc #       ZANABAZAR SQUARE SIGN VISARGA
+11A57..11A58  ; Mc #   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
+11A97         ; Mc #       SOYOMBO SIGN VISARGA
+11C2F         ; Mc #       BHAIKSUKI VOWEL SIGN AA
+11C3E         ; Mc #       BHAIKSUKI SIGN VISARGA
+11CA9         ; Mc #       MARCHEN SUBJOINED LETTER YA
+11CB1         ; Mc #       MARCHEN VOWEL SIGN I
+11CB4         ; Mc #       MARCHEN VOWEL SIGN O
+11D8A..11D8E  ; Mc #   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D93..11D94  ; Mc #   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D96         ; Mc #       GUNJALA GONDI SIGN VISARGA
+11EF5..11EF6  ; Mc #   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
+11F03         ; Mc #       KAWI SIGN VISARGA
+11F34..11F35  ; Mc #   [2] KAWI VOWEL SIGN AA..KAWI VOWEL SIGN ALTERNATE AA
+11F3E..11F3F  ; Mc #   [2] KAWI VOWEL SIGN E..KAWI VOWEL SIGN AI
+11F41         ; Mc #       KAWI SIGN KILLER
+16F51..16F87  ; Mc #  [55] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN UI
+16FF0..16FF1  ; Mc #   [2] VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
+1D165..1D166  ; Mc #   [2] MUSICAL SYMBOL COMBINING STEM..MUSICAL SYMBOL COMBINING SPRECHGESANG STEM
+1D16D..1D172  ; Mc #   [6] MUSICAL SYMBOL COMBINING AUGMENTATION DOT..MUSICAL SYMBOL COMBINING FLAG-5
+
+# Total code points: 452
+
+# ================================================
+
+# General_Category=Decimal_Number
+
+0030..0039    ; Nd #  [10] DIGIT ZERO..DIGIT NINE
+0660..0669    ; Nd #  [10] ARABIC-INDIC DIGIT ZERO..ARABIC-INDIC DIGIT NINE
+06F0..06F9    ; Nd #  [10] EXTENDED ARABIC-INDIC DIGIT ZERO..EXTENDED ARABIC-INDIC DIGIT NINE
+07C0..07C9    ; Nd #  [10] NKO DIGIT ZERO..NKO DIGIT NINE
+0966..096F    ; Nd #  [10] DEVANAGARI DIGIT ZERO..DEVANAGARI DIGIT NINE
+09E6..09EF    ; Nd #  [10] BENGALI DIGIT ZERO..BENGALI DIGIT NINE
+0A66..0A6F    ; Nd #  [10] GURMUKHI DIGIT ZERO..GURMUKHI DIGIT NINE
+0AE6..0AEF    ; Nd #  [10] GUJARATI DIGIT ZERO..GUJARATI DIGIT NINE
+0B66..0B6F    ; Nd #  [10] ORIYA DIGIT ZERO..ORIYA DIGIT NINE
+0BE6..0BEF    ; Nd #  [10] TAMIL DIGIT ZERO..TAMIL DIGIT NINE
+0C66..0C6F    ; Nd #  [10] TELUGU DIGIT ZERO..TELUGU DIGIT NINE
+0CE6..0CEF    ; Nd #  [10] KANNADA DIGIT ZERO..KANNADA DIGIT NINE
+0D66..0D6F    ; Nd #  [10] MALAYALAM DIGIT ZERO..MALAYALAM DIGIT NINE
+0DE6..0DEF    ; Nd #  [10] SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT NINE
+0E50..0E59    ; Nd #  [10] THAI DIGIT ZERO..THAI DIGIT NINE
+0ED0..0ED9    ; Nd #  [10] LAO DIGIT ZERO..LAO DIGIT NINE
+0F20..0F29    ; Nd #  [10] TIBETAN DIGIT ZERO..TIBETAN DIGIT NINE
+1040..1049    ; Nd #  [10] MYANMAR DIGIT ZERO..MYANMAR DIGIT NINE
+1090..1099    ; Nd #  [10] MYANMAR SHAN DIGIT ZERO..MYANMAR SHAN DIGIT NINE
+17E0..17E9    ; Nd #  [10] KHMER DIGIT ZERO..KHMER DIGIT NINE
+1810..1819    ; Nd #  [10] MONGOLIAN DIGIT ZERO..MONGOLIAN DIGIT NINE
+1946..194F    ; Nd #  [10] LIMBU DIGIT ZERO..LIMBU DIGIT NINE
+19D0..19D9    ; Nd #  [10] NEW TAI LUE DIGIT ZERO..NEW TAI LUE DIGIT NINE
+1A80..1A89    ; Nd #  [10] TAI THAM HORA DIGIT ZERO..TAI THAM HORA DIGIT NINE
+1A90..1A99    ; Nd #  [10] TAI THAM THAM DIGIT ZERO..TAI THAM THAM DIGIT NINE
+1B50..1B59    ; Nd #  [10] BALINESE DIGIT ZERO..BALINESE DIGIT NINE
+1BB0..1BB9    ; Nd #  [10] SUNDANESE DIGIT ZERO..SUNDANESE DIGIT NINE
+1C40..1C49    ; Nd #  [10] LEPCHA DIGIT ZERO..LEPCHA DIGIT NINE
+1C50..1C59    ; Nd #  [10] OL CHIKI DIGIT ZERO..OL CHIKI DIGIT NINE
+A620..A629    ; Nd #  [10] VAI DIGIT ZERO..VAI DIGIT NINE
+A8D0..A8D9    ; Nd #  [10] SAURASHTRA DIGIT ZERO..SAURASHTRA DIGIT NINE
+A900..A909    ; Nd #  [10] KAYAH LI DIGIT ZERO..KAYAH LI DIGIT NINE
+A9D0..A9D9    ; Nd #  [10] JAVANESE DIGIT ZERO..JAVANESE DIGIT NINE
+A9F0..A9F9    ; Nd #  [10] MYANMAR TAI LAING DIGIT ZERO..MYANMAR TAI LAING DIGIT NINE
+AA50..AA59    ; Nd #  [10] CHAM DIGIT ZERO..CHAM DIGIT NINE
+ABF0..ABF9    ; Nd #  [10] MEETEI MAYEK DIGIT ZERO..MEETEI MAYEK DIGIT NINE
+FF10..FF19    ; Nd #  [10] FULLWIDTH DIGIT ZERO..FULLWIDTH DIGIT NINE
+104A0..104A9  ; Nd #  [10] OSMANYA DIGIT ZERO..OSMANYA DIGIT NINE
+10D30..10D39  ; Nd #  [10] HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA DIGIT NINE
+11066..1106F  ; Nd #  [10] BRAHMI DIGIT ZERO..BRAHMI DIGIT NINE
+110F0..110F9  ; Nd #  [10] SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT NINE
+11136..1113F  ; Nd #  [10] CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE
+111D0..111D9  ; Nd #  [10] SHARADA DIGIT ZERO..SHARADA DIGIT NINE
+112F0..112F9  ; Nd #  [10] KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE
+11450..11459  ; Nd #  [10] NEWA DIGIT ZERO..NEWA DIGIT NINE
+114D0..114D9  ; Nd #  [10] TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE
+11650..11659  ; Nd #  [10] MODI DIGIT ZERO..MODI DIGIT NINE
+116C0..116C9  ; Nd #  [10] TAKRI DIGIT ZERO..TAKRI DIGIT NINE
+11730..11739  ; Nd #  [10] AHOM DIGIT ZERO..AHOM DIGIT NINE
+118E0..118E9  ; Nd #  [10] WARANG CITI DIGIT ZERO..WARANG CITI DIGIT NINE
+11950..11959  ; Nd #  [10] DIVES AKURU DIGIT ZERO..DIVES AKURU DIGIT NINE
+11C50..11C59  ; Nd #  [10] BHAIKSUKI DIGIT ZERO..BHAIKSUKI DIGIT NINE
+11D50..11D59  ; Nd #  [10] MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT NINE
+11DA0..11DA9  ; Nd #  [10] GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT NINE
+11F50..11F59  ; Nd #  [10] KAWI DIGIT ZERO..KAWI DIGIT NINE
+16A60..16A69  ; Nd #  [10] MRO DIGIT ZERO..MRO DIGIT NINE
+16AC0..16AC9  ; Nd #  [10] TANGSA DIGIT ZERO..TANGSA DIGIT NINE
+16B50..16B59  ; Nd #  [10] PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT NINE
+1D7CE..1D7FF  ; Nd #  [50] MATHEMATICAL BOLD DIGIT ZERO..MATHEMATICAL MONOSPACE DIGIT NINE
+1E140..1E149  ; Nd #  [10] NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG PUACHUE HMONG DIGIT NINE
+1E2F0..1E2F9  ; Nd #  [10] WANCHO DIGIT ZERO..WANCHO DIGIT NINE
+1E4F0..1E4F9  ; Nd #  [10] NAG MUNDARI DIGIT ZERO..NAG MUNDARI DIGIT NINE
+1E950..1E959  ; Nd #  [10] ADLAM DIGIT ZERO..ADLAM DIGIT NINE
+1FBF0..1FBF9  ; Nd #  [10] SEGMENTED DIGIT ZERO..SEGMENTED DIGIT NINE
+
+# Total code points: 680
+
+# ================================================
+
+# General_Category=Letter_Number
+
+16EE..16F0    ; Nl #   [3] RUNIC ARLAUG SYMBOL..RUNIC BELGTHOR SYMBOL
+2160..2182    ; Nl #  [35] ROMAN NUMERAL ONE..ROMAN NUMERAL TEN THOUSAND
+2185..2188    ; Nl #   [4] ROMAN NUMERAL SIX LATE FORM..ROMAN NUMERAL ONE HUNDRED THOUSAND
+3007          ; Nl #       IDEOGRAPHIC NUMBER ZERO
+3021..3029    ; Nl #   [9] HANGZHOU NUMERAL ONE..HANGZHOU NUMERAL NINE
+3038..303A    ; Nl #   [3] HANGZHOU NUMERAL TEN..HANGZHOU NUMERAL THIRTY
+A6E6..A6EF    ; Nl #  [10] BAMUM LETTER MO..BAMUM LETTER KOGHOM
+10140..10174  ; Nl #  [53] GREEK ACROPHONIC ATTIC ONE QUARTER..GREEK ACROPHONIC STRATIAN FIFTY MNAS
+10341         ; Nl #       GOTHIC LETTER NINETY
+1034A         ; Nl #       GOTHIC LETTER NINE HUNDRED
+103D1..103D5  ; Nl #   [5] OLD PERSIAN NUMBER ONE..OLD PERSIAN NUMBER HUNDRED
+12400..1246E  ; Nl # [111] CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
+
+# Total code points: 236
+
+# ================================================
+
+# General_Category=Other_Number
+
+00B2..00B3    ; No #   [2] SUPERSCRIPT TWO..SUPERSCRIPT THREE
+00B9          ; No #       SUPERSCRIPT ONE
+00BC..00BE    ; No #   [3] VULGAR FRACTION ONE QUARTER..VULGAR FRACTION THREE QUARTERS
+09F4..09F9    ; No #   [6] BENGALI CURRENCY NUMERATOR ONE..BENGALI CURRENCY DENOMINATOR SIXTEEN
+0B72..0B77    ; No #   [6] ORIYA FRACTION ONE QUARTER..ORIYA FRACTION THREE SIXTEENTHS
+0BF0..0BF2    ; No #   [3] TAMIL NUMBER TEN..TAMIL NUMBER ONE THOUSAND
+0C78..0C7E    ; No #   [7] TELUGU FRACTION DIGIT ZERO FOR ODD POWERS OF FOUR..TELUGU FRACTION DIGIT THREE FOR EVEN POWERS OF FOUR
+0D58..0D5E    ; No #   [7] MALAYALAM FRACTION ONE ONE-HUNDRED-AND-SIXTIETH..MALAYALAM FRACTION ONE FIFTH
+0D70..0D78    ; No #   [9] MALAYALAM NUMBER TEN..MALAYALAM FRACTION THREE SIXTEENTHS
+0F2A..0F33    ; No #  [10] TIBETAN DIGIT HALF ONE..TIBETAN DIGIT HALF ZERO
+1369..137C    ; No #  [20] ETHIOPIC DIGIT ONE..ETHIOPIC NUMBER TEN THOUSAND
+17F0..17F9    ; No #  [10] KHMER SYMBOL LEK ATTAK SON..KHMER SYMBOL LEK ATTAK PRAM-BUON
+19DA          ; No #       NEW TAI LUE THAM DIGIT ONE
+2070          ; No #       SUPERSCRIPT ZERO
+2074..2079    ; No #   [6] SUPERSCRIPT FOUR..SUPERSCRIPT NINE
+2080..2089    ; No #  [10] SUBSCRIPT ZERO..SUBSCRIPT NINE
+2150..215F    ; No #  [16] VULGAR FRACTION ONE SEVENTH..FRACTION NUMERATOR ONE
+2189          ; No #       VULGAR FRACTION ZERO THIRDS
+2460..249B    ; No #  [60] CIRCLED DIGIT ONE..NUMBER TWENTY FULL STOP
+24EA..24FF    ; No #  [22] CIRCLED DIGIT ZERO..NEGATIVE CIRCLED DIGIT ZERO
+2776..2793    ; No #  [30] DINGBAT NEGATIVE CIRCLED DIGIT ONE..DINGBAT NEGATIVE CIRCLED SANS-SERIF NUMBER TEN
+2CFD          ; No #       COPTIC FRACTION ONE HALF
+3192..3195    ; No #   [4] IDEOGRAPHIC ANNOTATION ONE MARK..IDEOGRAPHIC ANNOTATION FOUR MARK
+3220..3229    ; No #  [10] PARENTHESIZED IDEOGRAPH ONE..PARENTHESIZED IDEOGRAPH TEN
+3248..324F    ; No #   [8] CIRCLED NUMBER TEN ON BLACK SQUARE..CIRCLED NUMBER EIGHTY ON BLACK SQUARE
+3251..325F    ; No #  [15] CIRCLED NUMBER TWENTY ONE..CIRCLED NUMBER THIRTY FIVE
+3280..3289    ; No #  [10] CIRCLED IDEOGRAPH ONE..CIRCLED IDEOGRAPH TEN
+32B1..32BF    ; No #  [15] CIRCLED NUMBER THIRTY SIX..CIRCLED NUMBER FIFTY
+A830..A835    ; No #   [6] NORTH INDIC FRACTION ONE QUARTER..NORTH INDIC FRACTION THREE SIXTEENTHS
+10107..10133  ; No #  [45] AEGEAN NUMBER ONE..AEGEAN NUMBER NINETY THOUSAND
+10175..10178  ; No #   [4] GREEK ONE HALF SIGN..GREEK THREE QUARTERS SIGN
+1018A..1018B  ; No #   [2] GREEK ZERO SIGN..GREEK ONE QUARTER SIGN
+102E1..102FB  ; No #  [27] COPTIC EPACT DIGIT ONE..COPTIC EPACT NUMBER NINE HUNDRED
+10320..10323  ; No #   [4] OLD ITALIC NUMERAL ONE..OLD ITALIC NUMERAL FIFTY
+10858..1085F  ; No #   [8] IMPERIAL ARAMAIC NUMBER ONE..IMPERIAL ARAMAIC NUMBER TEN THOUSAND
+10879..1087F  ; No #   [7] PALMYRENE NUMBER ONE..PALMYRENE NUMBER TWENTY
+108A7..108AF  ; No #   [9] NABATAEAN NUMBER ONE..NABATAEAN NUMBER ONE HUNDRED
+108FB..108FF  ; No #   [5] HATRAN NUMBER ONE..HATRAN NUMBER ONE HUNDRED
+10916..1091B  ; No #   [6] PHOENICIAN NUMBER ONE..PHOENICIAN NUMBER THREE
+109BC..109BD  ; No #   [2] MEROITIC CURSIVE FRACTION ELEVEN TWELFTHS..MEROITIC CURSIVE FRACTION ONE HALF
+109C0..109CF  ; No #  [16] MEROITIC CURSIVE NUMBER ONE..MEROITIC CURSIVE NUMBER SEVENTY
+109D2..109FF  ; No #  [46] MEROITIC CURSIVE NUMBER ONE HUNDRED..MEROITIC CURSIVE FRACTION TEN TWELFTHS
+10A40..10A48  ; No #   [9] KHAROSHTHI DIGIT ONE..KHAROSHTHI FRACTION ONE HALF
+10A7D..10A7E  ; No #   [2] OLD SOUTH ARABIAN NUMBER ONE..OLD SOUTH ARABIAN NUMBER FIFTY
+10A9D..10A9F  ; No #   [3] OLD NORTH ARABIAN NUMBER ONE..OLD NORTH ARABIAN NUMBER TWENTY
+10AEB..10AEF  ; No #   [5] MANICHAEAN NUMBER ONE..MANICHAEAN NUMBER ONE HUNDRED
+10B58..10B5F  ; No #   [8] INSCRIPTIONAL PARTHIAN NUMBER ONE..INSCRIPTIONAL PARTHIAN NUMBER ONE THOUSAND
+10B78..10B7F  ; No #   [8] INSCRIPTIONAL PAHLAVI NUMBER ONE..INSCRIPTIONAL PAHLAVI NUMBER ONE THOUSAND
+10BA9..10BAF  ; No #   [7] PSALTER PAHLAVI NUMBER ONE..PSALTER PAHLAVI NUMBER ONE HUNDRED
+10CFA..10CFF  ; No #   [6] OLD HUNGARIAN NUMBER ONE..OLD HUNGARIAN NUMBER ONE THOUSAND
+10E60..10E7E  ; No #  [31] RUMI DIGIT ONE..RUMI FRACTION TWO THIRDS
+10F1D..10F26  ; No #  [10] OLD SOGDIAN NUMBER ONE..OLD SOGDIAN FRACTION ONE HALF
+10F51..10F54  ; No #   [4] SOGDIAN NUMBER ONE..SOGDIAN NUMBER ONE HUNDRED
+10FC5..10FCB  ; No #   [7] CHORASMIAN NUMBER ONE..CHORASMIAN NUMBER ONE HUNDRED
+11052..11065  ; No #  [20] BRAHMI NUMBER ONE..BRAHMI NUMBER ONE THOUSAND
+111E1..111F4  ; No #  [20] SINHALA ARCHAIC DIGIT ONE..SINHALA ARCHAIC NUMBER ONE THOUSAND
+1173A..1173B  ; No #   [2] AHOM NUMBER TEN..AHOM NUMBER TWENTY
+118EA..118F2  ; No #   [9] WARANG CITI NUMBER TEN..WARANG CITI NUMBER NINETY
+11C5A..11C6C  ; No #  [19] BHAIKSUKI NUMBER ONE..BHAIKSUKI HUNDREDS UNIT MARK
+11FC0..11FD4  ; No #  [21] TAMIL FRACTION ONE THREE-HUNDRED-AND-TWENTIETH..TAMIL FRACTION DOWNSCALING FACTOR KIIZH
+16B5B..16B61  ; No #   [7] PAHAWH HMONG NUMBER TENS..PAHAWH HMONG NUMBER TRILLIONS
+16E80..16E96  ; No #  [23] MEDEFAIDRIN DIGIT ZERO..MEDEFAIDRIN DIGIT THREE ALTERNATE FORM
+1D2C0..1D2D3  ; No #  [20] KAKTOVIK NUMERAL ZERO..KAKTOVIK NUMERAL NINETEEN
+1D2E0..1D2F3  ; No #  [20] MAYAN NUMERAL ZERO..MAYAN NUMERAL NINETEEN
+1D360..1D378  ; No #  [25] COUNTING ROD UNIT DIGIT ONE..TALLY MARK FIVE
+1E8C7..1E8CF  ; No #   [9] MENDE KIKAKUI DIGIT ONE..MENDE KIKAKUI DIGIT NINE
+1EC71..1ECAB  ; No #  [59] INDIC SIYAQ NUMBER ONE..INDIC SIYAQ NUMBER PREFIXED NINE
+1ECAD..1ECAF  ; No #   [3] INDIC SIYAQ FRACTION ONE QUARTER..INDIC SIYAQ FRACTION THREE QUARTERS
+1ECB1..1ECB4  ; No #   [4] INDIC SIYAQ NUMBER ALTERNATE ONE..INDIC SIYAQ ALTERNATE LAKH MARK
+1ED01..1ED2D  ; No #  [45] OTTOMAN SIYAQ NUMBER ONE..OTTOMAN SIYAQ NUMBER NINETY THOUSAND
+1ED2F..1ED3D  ; No #  [15] OTTOMAN SIYAQ ALTERNATE NUMBER TWO..OTTOMAN SIYAQ FRACTION ONE SIXTH
+1F100..1F10C  ; No #  [13] DIGIT ZERO FULL STOP..DINGBAT NEGATIVE CIRCLED SANS-SERIF DIGIT ZERO
+
+# Total code points: 915
+
+# ================================================
+
+# General_Category=Space_Separator
+
+0020          ; Zs #       SPACE
+00A0          ; Zs #       NO-BREAK SPACE
+1680          ; Zs #       OGHAM SPACE MARK
+2000..200A    ; Zs #  [11] EN QUAD..HAIR SPACE
+202F          ; Zs #       NARROW NO-BREAK SPACE
+205F          ; Zs #       MEDIUM MATHEMATICAL SPACE
+3000          ; Zs #       IDEOGRAPHIC SPACE
+
+# Total code points: 17
+
+# ================================================
+
+# General_Category=Line_Separator
+
+2028          ; Zl #       LINE SEPARATOR
+
+# Total code points: 1
+
+# ================================================
+
+# General_Category=Paragraph_Separator
+
+2029          ; Zp #       PARAGRAPH SEPARATOR
+
+# Total code points: 1
+
+# ================================================
+
+# General_Category=Control
+
+0000..001F    ; Cc #  [32] <control-0000>..<control-001F>
+007F..009F    ; Cc #  [33] <control-007F>..<control-009F>
+
+# Total code points: 65
+
+# ================================================
+
+# General_Category=Format
+
+00AD          ; Cf #       SOFT HYPHEN
+0600..0605    ; Cf #   [6] ARABIC NUMBER SIGN..ARABIC NUMBER MARK ABOVE
+061C          ; Cf #       ARABIC LETTER MARK
+06DD          ; Cf #       ARABIC END OF AYAH
+070F          ; Cf #       SYRIAC ABBREVIATION MARK
+0890..0891    ; Cf #   [2] ARABIC POUND MARK ABOVE..ARABIC PIASTRE MARK ABOVE
+08E2          ; Cf #       ARABIC DISPUTED END OF AYAH
+180E          ; Cf #       MONGOLIAN VOWEL SEPARATOR
+200B..200F    ; Cf #   [5] ZERO WIDTH SPACE..RIGHT-TO-LEFT MARK
+202A..202E    ; Cf #   [5] LEFT-TO-RIGHT EMBEDDING..RIGHT-TO-LEFT OVERRIDE
+2060..2064    ; Cf #   [5] WORD JOINER..INVISIBLE PLUS
+2066..206F    ; Cf #  [10] LEFT-TO-RIGHT ISOLATE..NOMINAL DIGIT SHAPES
+FEFF          ; Cf #       ZERO WIDTH NO-BREAK SPACE
+FFF9..FFFB    ; Cf #   [3] INTERLINEAR ANNOTATION ANCHOR..INTERLINEAR ANNOTATION TERMINATOR
+110BD         ; Cf #       KAITHI NUMBER SIGN
+110CD         ; Cf #       KAITHI NUMBER SIGN ABOVE
+13430..1343F  ; Cf #  [16] EGYPTIAN HIEROGLYPH VERTICAL JOINER..EGYPTIAN HIEROGLYPH END WALLED ENCLOSURE
+1BCA0..1BCA3  ; Cf #   [4] SHORTHAND FORMAT LETTER OVERLAP..SHORTHAND FORMAT UP STEP
+1D173..1D17A  ; Cf #   [8] MUSICAL SYMBOL BEGIN BEAM..MUSICAL SYMBOL END PHRASE
+E0001         ; Cf #       LANGUAGE TAG
+E0020..E007F  ; Cf #  [96] TAG SPACE..CANCEL TAG
+
+# Total code points: 170
+
+# ================================================
+
+# General_Category=Private_Use
+
+E000..F8FF    ; Co # [6400] <private-use-E000>..<private-use-F8FF>
+F0000..FFFFD  ; Co # [65534] <private-use-F0000>..<private-use-FFFFD>
+100000..10FFFD; Co # [65534] <private-use-100000>..<private-use-10FFFD>
+
+# Total code points: 137468
+
+# ================================================
+
+# General_Category=Surrogate
+
+D800..DFFF    ; Cs # [2048] <surrogate-D800>..<surrogate-DFFF>
+
+# Total code points: 2048
+
+# ================================================
+
+# General_Category=Dash_Punctuation
+
+002D          ; Pd #       HYPHEN-MINUS
+058A          ; Pd #       ARMENIAN HYPHEN
+05BE          ; Pd #       HEBREW PUNCTUATION MAQAF
+1400          ; Pd #       CANADIAN SYLLABICS HYPHEN
+1806          ; Pd #       MONGOLIAN TODO SOFT HYPHEN
+2010..2015    ; Pd #   [6] HYPHEN..HORIZONTAL BAR
+2E17          ; Pd #       DOUBLE OBLIQUE HYPHEN
+2E1A          ; Pd #       HYPHEN WITH DIAERESIS
+2E3A..2E3B    ; Pd #   [2] TWO-EM DASH..THREE-EM DASH
+2E40          ; Pd #       DOUBLE HYPHEN
+2E5D          ; Pd #       OBLIQUE HYPHEN
+301C          ; Pd #       WAVE DASH
+3030          ; Pd #       WAVY DASH
+30A0          ; Pd #       KATAKANA-HIRAGANA DOUBLE HYPHEN
+FE31..FE32    ; Pd #   [2] PRESENTATION FORM FOR VERTICAL EM DASH..PRESENTATION FORM FOR VERTICAL EN DASH
+FE58          ; Pd #       SMALL EM DASH
+FE63          ; Pd #       SMALL HYPHEN-MINUS
+FF0D          ; Pd #       FULLWIDTH HYPHEN-MINUS
+10EAD         ; Pd #       YEZIDI HYPHENATION MARK
+
+# Total code points: 26
+
+# ================================================
+
+# General_Category=Open_Punctuation
+
+0028          ; Ps #       LEFT PARENTHESIS
+005B          ; Ps #       LEFT SQUARE BRACKET
+007B          ; Ps #       LEFT CURLY BRACKET
+0F3A          ; Ps #       TIBETAN MARK GUG RTAGS GYON
+0F3C          ; Ps #       TIBETAN MARK ANG KHANG GYON
+169B          ; Ps #       OGHAM FEATHER MARK
+201A          ; Ps #       SINGLE LOW-9 QUOTATION MARK
+201E          ; Ps #       DOUBLE LOW-9 QUOTATION MARK
+2045          ; Ps #       LEFT SQUARE BRACKET WITH QUILL
+207D          ; Ps #       SUPERSCRIPT LEFT PARENTHESIS
+208D          ; Ps #       SUBSCRIPT LEFT PARENTHESIS
+2308          ; Ps #       LEFT CEILING
+230A          ; Ps #       LEFT FLOOR
+2329          ; Ps #       LEFT-POINTING ANGLE BRACKET
+2768          ; Ps #       MEDIUM LEFT PARENTHESIS ORNAMENT
+276A          ; Ps #       MEDIUM FLATTENED LEFT PARENTHESIS ORNAMENT
+276C          ; Ps #       MEDIUM LEFT-POINTING ANGLE BRACKET ORNAMENT
+276E          ; Ps #       HEAVY LEFT-POINTING ANGLE QUOTATION MARK ORNAMENT
+2770          ; Ps #       HEAVY LEFT-POINTING ANGLE BRACKET ORNAMENT
+2772          ; Ps #       LIGHT LEFT TORTOISE SHELL BRACKET ORNAMENT
+2774          ; Ps #       MEDIUM LEFT CURLY BRACKET ORNAMENT
+27C5          ; Ps #       LEFT S-SHAPED BAG DELIMITER
+27E6          ; Ps #       MATHEMATICAL LEFT WHITE SQUARE BRACKET
+27E8          ; Ps #       MATHEMATICAL LEFT ANGLE BRACKET
+27EA          ; Ps #       MATHEMATICAL LEFT DOUBLE ANGLE BRACKET
+27EC          ; Ps #       MATHEMATICAL LEFT WHITE TORTOISE SHELL BRACKET
+27EE          ; Ps #       MATHEMATICAL LEFT FLATTENED PARENTHESIS
+2983          ; Ps #       LEFT WHITE CURLY BRACKET
+2985          ; Ps #       LEFT WHITE PARENTHESIS
+2987          ; Ps #       Z NOTATION LEFT IMAGE BRACKET
+2989          ; Ps #       Z NOTATION LEFT BINDING BRACKET
+298B          ; Ps #       LEFT SQUARE BRACKET WITH UNDERBAR
+298D          ; Ps #       LEFT SQUARE BRACKET WITH TICK IN TOP CORNER
+298F          ; Ps #       LEFT SQUARE BRACKET WITH TICK IN BOTTOM CORNER
+2991          ; Ps #       LEFT ANGLE BRACKET WITH DOT
+2993          ; Ps #       LEFT ARC LESS-THAN BRACKET
+2995          ; Ps #       DOUBLE LEFT ARC GREATER-THAN BRACKET
+2997          ; Ps #       LEFT BLACK TORTOISE SHELL BRACKET
+29D8          ; Ps #       LEFT WIGGLY FENCE
+29DA          ; Ps #       LEFT DOUBLE WIGGLY FENCE
+29FC          ; Ps #       LEFT-POINTING CURVED ANGLE BRACKET
+2E22          ; Ps #       TOP LEFT HALF BRACKET
+2E24          ; Ps #       BOTTOM LEFT HALF BRACKET
+2E26          ; Ps #       LEFT SIDEWAYS U BRACKET
+2E28          ; Ps #       LEFT DOUBLE PARENTHESIS
+2E42          ; Ps #       DOUBLE LOW-REVERSED-9 QUOTATION MARK
+2E55          ; Ps #       LEFT SQUARE BRACKET WITH STROKE
+2E57          ; Ps #       LEFT SQUARE BRACKET WITH DOUBLE STROKE
+2E59          ; Ps #       TOP HALF LEFT PARENTHESIS
+2E5B          ; Ps #       BOTTOM HALF LEFT PARENTHESIS
+3008          ; Ps #       LEFT ANGLE BRACKET
+300A          ; Ps #       LEFT DOUBLE ANGLE BRACKET
+300C          ; Ps #       LEFT CORNER BRACKET
+300E          ; Ps #       LEFT WHITE CORNER BRACKET
+3010          ; Ps #       LEFT BLACK LENTICULAR BRACKET
+3014          ; Ps #       LEFT TORTOISE SHELL BRACKET
+3016          ; Ps #       LEFT WHITE LENTICULAR BRACKET
+3018          ; Ps #       LEFT WHITE TORTOISE SHELL BRACKET
+301A          ; Ps #       LEFT WHITE SQUARE BRACKET
+301D          ; Ps #       REVERSED DOUBLE PRIME QUOTATION MARK
+FD3F          ; Ps #       ORNATE RIGHT PARENTHESIS
+FE17          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT WHITE LENTICULAR BRACKET
+FE35          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT PARENTHESIS
+FE37          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT CURLY BRACKET
+FE39          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT TORTOISE SHELL BRACKET
+FE3B          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT BLACK LENTICULAR BRACKET
+FE3D          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT DOUBLE ANGLE BRACKET
+FE3F          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT ANGLE BRACKET
+FE41          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT CORNER BRACKET
+FE43          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT WHITE CORNER BRACKET
+FE47          ; Ps #       PRESENTATION FORM FOR VERTICAL LEFT SQUARE BRACKET
+FE59          ; Ps #       SMALL LEFT PARENTHESIS
+FE5B          ; Ps #       SMALL LEFT CURLY BRACKET
+FE5D          ; Ps #       SMALL LEFT TORTOISE SHELL BRACKET
+FF08          ; Ps #       FULLWIDTH LEFT PARENTHESIS
+FF3B          ; Ps #       FULLWIDTH LEFT SQUARE BRACKET
+FF5B          ; Ps #       FULLWIDTH LEFT CURLY BRACKET
+FF5F          ; Ps #       FULLWIDTH LEFT WHITE PARENTHESIS
+FF62          ; Ps #       HALFWIDTH LEFT CORNER BRACKET
+
+# Total code points: 79
+
+# ================================================
+
+# General_Category=Close_Punctuation
+
+0029          ; Pe #       RIGHT PARENTHESIS
+005D          ; Pe #       RIGHT SQUARE BRACKET
+007D          ; Pe #       RIGHT CURLY BRACKET
+0F3B          ; Pe #       TIBETAN MARK GUG RTAGS GYAS
+0F3D          ; Pe #       TIBETAN MARK ANG KHANG GYAS
+169C          ; Pe #       OGHAM REVERSED FEATHER MARK
+2046          ; Pe #       RIGHT SQUARE BRACKET WITH QUILL
+207E          ; Pe #       SUPERSCRIPT RIGHT PARENTHESIS
+208E          ; Pe #       SUBSCRIPT RIGHT PARENTHESIS
+2309          ; Pe #       RIGHT CEILING
+230B          ; Pe #       RIGHT FLOOR
+232A          ; Pe #       RIGHT-POINTING ANGLE BRACKET
+2769          ; Pe #       MEDIUM RIGHT PARENTHESIS ORNAMENT
+276B          ; Pe #       MEDIUM FLATTENED RIGHT PARENTHESIS ORNAMENT
+276D          ; Pe #       MEDIUM RIGHT-POINTING ANGLE BRACKET ORNAMENT
+276F          ; Pe #       HEAVY RIGHT-POINTING ANGLE QUOTATION MARK ORNAMENT
+2771          ; Pe #       HEAVY RIGHT-POINTING ANGLE BRACKET ORNAMENT
+2773          ; Pe #       LIGHT RIGHT TORTOISE SHELL BRACKET ORNAMENT
+2775          ; Pe #       MEDIUM RIGHT CURLY BRACKET ORNAMENT
+27C6          ; Pe #       RIGHT S-SHAPED BAG DELIMITER
+27E7          ; Pe #       MATHEMATICAL RIGHT WHITE SQUARE BRACKET
+27E9          ; Pe #       MATHEMATICAL RIGHT ANGLE BRACKET
+27EB          ; Pe #       MATHEMATICAL RIGHT DOUBLE ANGLE BRACKET
+27ED          ; Pe #       MATHEMATICAL RIGHT WHITE TORTOISE SHELL BRACKET
+27EF          ; Pe #       MATHEMATICAL RIGHT FLATTENED PARENTHESIS
+2984          ; Pe #       RIGHT WHITE CURLY BRACKET
+2986          ; Pe #       RIGHT WHITE PARENTHESIS
+2988          ; Pe #       Z NOTATION RIGHT IMAGE BRACKET
+298A          ; Pe #       Z NOTATION RIGHT BINDING BRACKET
+298C          ; Pe #       RIGHT SQUARE BRACKET WITH UNDERBAR
+298E          ; Pe #       RIGHT SQUARE BRACKET WITH TICK IN BOTTOM CORNER
+2990          ; Pe #       RIGHT SQUARE BRACKET WITH TICK IN TOP CORNER
+2992          ; Pe #       RIGHT ANGLE BRACKET WITH DOT
+2994          ; Pe #       RIGHT ARC GREATER-THAN BRACKET
+2996          ; Pe #       DOUBLE RIGHT ARC LESS-THAN BRACKET
+2998          ; Pe #       RIGHT BLACK TORTOISE SHELL BRACKET
+29D9          ; Pe #       RIGHT WIGGLY FENCE
+29DB          ; Pe #       RIGHT DOUBLE WIGGLY FENCE
+29FD          ; Pe #       RIGHT-POINTING CURVED ANGLE BRACKET
+2E23          ; Pe #       TOP RIGHT HALF BRACKET
+2E25          ; Pe #       BOTTOM RIGHT HALF BRACKET
+2E27          ; Pe #       RIGHT SIDEWAYS U BRACKET
+2E29          ; Pe #       RIGHT DOUBLE PARENTHESIS
+2E56          ; Pe #       RIGHT SQUARE BRACKET WITH STROKE
+2E58          ; Pe #       RIGHT SQUARE BRACKET WITH DOUBLE STROKE
+2E5A          ; Pe #       TOP HALF RIGHT PARENTHESIS
+2E5C          ; Pe #       BOTTOM HALF RIGHT PARENTHESIS
+3009          ; Pe #       RIGHT ANGLE BRACKET
+300B          ; Pe #       RIGHT DOUBLE ANGLE BRACKET
+300D          ; Pe #       RIGHT CORNER BRACKET
+300F          ; Pe #       RIGHT WHITE CORNER BRACKET
+3011          ; Pe #       RIGHT BLACK LENTICULAR BRACKET
+3015          ; Pe #       RIGHT TORTOISE SHELL BRACKET
+3017          ; Pe #       RIGHT WHITE LENTICULAR BRACKET
+3019          ; Pe #       RIGHT WHITE TORTOISE SHELL BRACKET
+301B          ; Pe #       RIGHT WHITE SQUARE BRACKET
+301E..301F    ; Pe #   [2] DOUBLE PRIME QUOTATION MARK..LOW DOUBLE PRIME QUOTATION MARK
+FD3E          ; Pe #       ORNATE LEFT PARENTHESIS
+FE18          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT WHITE LENTICULAR BRAKCET
+FE36          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT PARENTHESIS
+FE38          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT CURLY BRACKET
+FE3A          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT TORTOISE SHELL BRACKET
+FE3C          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT BLACK LENTICULAR BRACKET
+FE3E          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT DOUBLE ANGLE BRACKET
+FE40          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT ANGLE BRACKET
+FE42          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT CORNER BRACKET
+FE44          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT WHITE CORNER BRACKET
+FE48          ; Pe #       PRESENTATION FORM FOR VERTICAL RIGHT SQUARE BRACKET
+FE5A          ; Pe #       SMALL RIGHT PARENTHESIS
+FE5C          ; Pe #       SMALL RIGHT CURLY BRACKET
+FE5E          ; Pe #       SMALL RIGHT TORTOISE SHELL BRACKET
+FF09          ; Pe #       FULLWIDTH RIGHT PARENTHESIS
+FF3D          ; Pe #       FULLWIDTH RIGHT SQUARE BRACKET
+FF5D          ; Pe #       FULLWIDTH RIGHT CURLY BRACKET
+FF60          ; Pe #       FULLWIDTH RIGHT WHITE PARENTHESIS
+FF63          ; Pe #       HALFWIDTH RIGHT CORNER BRACKET
+
+# Total code points: 77
+
+# ================================================
+
+# General_Category=Connector_Punctuation
+
+005F          ; Pc #       LOW LINE
+203F..2040    ; Pc #   [2] UNDERTIE..CHARACTER TIE
+2054          ; Pc #       INVERTED UNDERTIE
+FE33..FE34    ; Pc #   [2] PRESENTATION FORM FOR VERTICAL LOW LINE..PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
+FE4D..FE4F    ; Pc #   [3] DASHED LOW LINE..WAVY LOW LINE
+FF3F          ; Pc #       FULLWIDTH LOW LINE
+
+# Total code points: 10
+
+# ================================================
+
+# General_Category=Other_Punctuation
+
+0021..0023    ; Po #   [3] EXCLAMATION MARK..NUMBER SIGN
+0025..0027    ; Po #   [3] PERCENT SIGN..APOSTROPHE
+002A          ; Po #       ASTERISK
+002C          ; Po #       COMMA
+002E..002F    ; Po #   [2] FULL STOP..SOLIDUS
+003A..003B    ; Po #   [2] COLON..SEMICOLON
+003F..0040    ; Po #   [2] QUESTION MARK..COMMERCIAL AT
+005C          ; Po #       REVERSE SOLIDUS
+00A1          ; Po #       INVERTED EXCLAMATION MARK
+00A7          ; Po #       SECTION SIGN
+00B6..00B7    ; Po #   [2] PILCROW SIGN..MIDDLE DOT
+00BF          ; Po #       INVERTED QUESTION MARK
+037E          ; Po #       GREEK QUESTION MARK
+0387          ; Po #       GREEK ANO TELEIA
+055A..055F    ; Po #   [6] ARMENIAN APOSTROPHE..ARMENIAN ABBREVIATION MARK
+0589          ; Po #       ARMENIAN FULL STOP
+05C0          ; Po #       HEBREW PUNCTUATION PASEQ
+05C3          ; Po #       HEBREW PUNCTUATION SOF PASUQ
+05C6          ; Po #       HEBREW PUNCTUATION NUN HAFUKHA
+05F3..05F4    ; Po #   [2] HEBREW PUNCTUATION GERESH..HEBREW PUNCTUATION GERSHAYIM
+0609..060A    ; Po #   [2] ARABIC-INDIC PER MILLE SIGN..ARABIC-INDIC PER TEN THOUSAND SIGN
+060C..060D    ; Po #   [2] ARABIC COMMA..ARABIC DATE SEPARATOR
+061B          ; Po #       ARABIC SEMICOLON
+061D..061F    ; Po #   [3] ARABIC END OF TEXT MARK..ARABIC QUESTION MARK
+066A..066D    ; Po #   [4] ARABIC PERCENT SIGN..ARABIC FIVE POINTED STAR
+06D4          ; Po #       ARABIC FULL STOP
+0700..070D    ; Po #  [14] SYRIAC END OF PARAGRAPH..SYRIAC HARKLEAN ASTERISCUS
+07F7..07F9    ; Po #   [3] NKO SYMBOL GBAKURUNEN..NKO EXCLAMATION MARK
+0830..083E    ; Po #  [15] SAMARITAN PUNCTUATION NEQUDAA..SAMARITAN PUNCTUATION ANNAAU
+085E          ; Po #       MANDAIC PUNCTUATION
+0964..0965    ; Po #   [2] DEVANAGARI DANDA..DEVANAGARI DOUBLE DANDA
+0970          ; Po #       DEVANAGARI ABBREVIATION SIGN
+09FD          ; Po #       BENGALI ABBREVIATION SIGN
+0A76          ; Po #       GURMUKHI ABBREVIATION SIGN
+0AF0          ; Po #       GUJARATI ABBREVIATION SIGN
+0C77          ; Po #       TELUGU SIGN SIDDHAM
+0C84          ; Po #       KANNADA SIGN SIDDHAM
+0DF4          ; Po #       SINHALA PUNCTUATION KUNDDALIYA
+0E4F          ; Po #       THAI CHARACTER FONGMAN
+0E5A..0E5B    ; Po #   [2] THAI CHARACTER ANGKHANKHU..THAI CHARACTER KHOMUT
+0F04..0F12    ; Po #  [15] TIBETAN MARK INITIAL YIG MGO MDUN MA..TIBETAN MARK RGYA GRAM SHAD
+0F14          ; Po #       TIBETAN MARK GTER TSHEG
+0F85          ; Po #       TIBETAN MARK PALUTA
+0FD0..0FD4    ; Po #   [5] TIBETAN MARK BSKA- SHOG GI MGO RGYAN..TIBETAN MARK CLOSING BRDA RNYING YIG MGO SGAB MA
+0FD9..0FDA    ; Po #   [2] TIBETAN MARK LEADING MCHAN RTAGS..TIBETAN MARK TRAILING MCHAN RTAGS
+104A..104F    ; Po #   [6] MYANMAR SIGN LITTLE SECTION..MYANMAR SYMBOL GENITIVE
+10FB          ; Po #       GEORGIAN PARAGRAPH SEPARATOR
+1360..1368    ; Po #   [9] ETHIOPIC SECTION MARK..ETHIOPIC PARAGRAPH SEPARATOR
+166E          ; Po #       CANADIAN SYLLABICS FULL STOP
+16EB..16ED    ; Po #   [3] RUNIC SINGLE PUNCTUATION..RUNIC CROSS PUNCTUATION
+1735..1736    ; Po #   [2] PHILIPPINE SINGLE PUNCTUATION..PHILIPPINE DOUBLE PUNCTUATION
+17D4..17D6    ; Po #   [3] KHMER SIGN KHAN..KHMER SIGN CAMNUC PII KUUH
+17D8..17DA    ; Po #   [3] KHMER SIGN BEYYAL..KHMER SIGN KOOMUUT
+1800..1805    ; Po #   [6] MONGOLIAN BIRGA..MONGOLIAN FOUR DOTS
+1807..180A    ; Po #   [4] MONGOLIAN SIBE SYLLABLE BOUNDARY MARKER..MONGOLIAN NIRUGU
+1944..1945    ; Po #   [2] LIMBU EXCLAMATION MARK..LIMBU QUESTION MARK
+1A1E..1A1F    ; Po #   [2] BUGINESE PALLAWA..BUGINESE END OF SECTION
+1AA0..1AA6    ; Po #   [7] TAI THAM SIGN WIANG..TAI THAM SIGN REVERSED ROTATED RANA
+1AA8..1AAD    ; Po #   [6] TAI THAM SIGN KAAN..TAI THAM SIGN CAANG
+1B5A..1B60    ; Po #   [7] BALINESE PANTI..BALINESE PAMENENG
+1B7D..1B7E    ; Po #   [2] BALINESE PANTI LANTANG..BALINESE PAMADA LANTANG
+1BFC..1BFF    ; Po #   [4] BATAK SYMBOL BINDU NA METEK..BATAK SYMBOL BINDU PANGOLAT
+1C3B..1C3F    ; Po #   [5] LEPCHA PUNCTUATION TA-ROL..LEPCHA PUNCTUATION TSHOOK
+1C7E..1C7F    ; Po #   [2] OL CHIKI PUNCTUATION MUCAAD..OL CHIKI PUNCTUATION DOUBLE MUCAAD
+1CC0..1CC7    ; Po #   [8] SUNDANESE PUNCTUATION BINDU SURYA..SUNDANESE PUNCTUATION BINDU BA SATANGA
+1CD3          ; Po #       VEDIC SIGN NIHSHVASA
+2016..2017    ; Po #   [2] DOUBLE VERTICAL LINE..DOUBLE LOW LINE
+2020..2027    ; Po #   [8] DAGGER..HYPHENATION POINT
+2030..2038    ; Po #   [9] PER MILLE SIGN..CARET
+203B..203E    ; Po #   [4] REFERENCE MARK..OVERLINE
+2041..2043    ; Po #   [3] CARET INSERTION POINT..HYPHEN BULLET
+2047..2051    ; Po #  [11] DOUBLE QUESTION MARK..TWO ASTERISKS ALIGNED VERTICALLY
+2053          ; Po #       SWUNG DASH
+2055..205E    ; Po #  [10] FLOWER PUNCTUATION MARK..VERTICAL FOUR DOTS
+2CF9..2CFC    ; Po #   [4] COPTIC OLD NUBIAN FULL STOP..COPTIC OLD NUBIAN VERSE DIVIDER
+2CFE..2CFF    ; Po #   [2] COPTIC FULL STOP..COPTIC MORPHOLOGICAL DIVIDER
+2D70          ; Po #       TIFINAGH SEPARATOR MARK
+2E00..2E01    ; Po #   [2] RIGHT ANGLE SUBSTITUTION MARKER..RIGHT ANGLE DOTTED SUBSTITUTION MARKER
+2E06..2E08    ; Po #   [3] RAISED INTERPOLATION MARKER..DOTTED TRANSPOSITION MARKER
+2E0B          ; Po #       RAISED SQUARE
+2E0E..2E16    ; Po #   [9] EDITORIAL CORONIS..DOTTED RIGHT-POINTING ANGLE
+2E18..2E19    ; Po #   [2] INVERTED INTERROBANG..PALM BRANCH
+2E1B          ; Po #       TILDE WITH RING ABOVE
+2E1E..2E1F    ; Po #   [2] TILDE WITH DOT ABOVE..TILDE WITH DOT BELOW
+2E2A..2E2E    ; Po #   [5] TWO DOTS OVER ONE DOT PUNCTUATION..REVERSED QUESTION MARK
+2E30..2E39    ; Po #  [10] RING POINT..TOP HALF SECTION SIGN
+2E3C..2E3F    ; Po #   [4] STENOGRAPHIC FULL STOP..CAPITULUM
+2E41          ; Po #       REVERSED COMMA
+2E43..2E4F    ; Po #  [13] DASH WITH LEFT UPTURN..CORNISH VERSE DIVIDER
+2E52..2E54    ; Po #   [3] TIRONIAN SIGN CAPITAL ET..MEDIEVAL QUESTION MARK
+3001..3003    ; Po #   [3] IDEOGRAPHIC COMMA..DITTO MARK
+303D          ; Po #       PART ALTERNATION MARK
+30FB          ; Po #       KATAKANA MIDDLE DOT
+A4FE..A4FF    ; Po #   [2] LISU PUNCTUATION COMMA..LISU PUNCTUATION FULL STOP
+A60D..A60F    ; Po #   [3] VAI COMMA..VAI QUESTION MARK
+A673          ; Po #       SLAVONIC ASTERISK
+A67E          ; Po #       CYRILLIC KAVYKA
+A6F2..A6F7    ; Po #   [6] BAMUM NJAEMLI..BAMUM QUESTION MARK
+A874..A877    ; Po #   [4] PHAGS-PA SINGLE HEAD MARK..PHAGS-PA MARK DOUBLE SHAD
+A8CE..A8CF    ; Po #   [2] SAURASHTRA DANDA..SAURASHTRA DOUBLE DANDA
+A8F8..A8FA    ; Po #   [3] DEVANAGARI SIGN PUSHPIKA..DEVANAGARI CARET
+A8FC          ; Po #       DEVANAGARI SIGN SIDDHAM
+A92E..A92F    ; Po #   [2] KAYAH LI SIGN CWI..KAYAH LI SIGN SHYA
+A95F          ; Po #       REJANG SECTION MARK
+A9C1..A9CD    ; Po #  [13] JAVANESE LEFT RERENGGAN..JAVANESE TURNED PADA PISELEH
+A9DE..A9DF    ; Po #   [2] JAVANESE PADA TIRTA TUMETES..JAVANESE PADA ISEN-ISEN
+AA5C..AA5F    ; Po #   [4] CHAM PUNCTUATION SPIRAL..CHAM PUNCTUATION TRIPLE DANDA
+AADE..AADF    ; Po #   [2] TAI VIET SYMBOL HO HOI..TAI VIET SYMBOL KOI KOI
+AAF0..AAF1    ; Po #   [2] MEETEI MAYEK CHEIKHAN..MEETEI MAYEK AHANG KHUDAM
+ABEB          ; Po #       MEETEI MAYEK CHEIKHEI
+FE10..FE16    ; Po #   [7] PRESENTATION FORM FOR VERTICAL COMMA..PRESENTATION FORM FOR VERTICAL QUESTION MARK
+FE19          ; Po #       PRESENTATION FORM FOR VERTICAL HORIZONTAL ELLIPSIS
+FE30          ; Po #       PRESENTATION FORM FOR VERTICAL TWO DOT LEADER
+FE45..FE46    ; Po #   [2] SESAME DOT..WHITE SESAME DOT
+FE49..FE4C    ; Po #   [4] DASHED OVERLINE..DOUBLE WAVY OVERLINE
+FE50..FE52    ; Po #   [3] SMALL COMMA..SMALL FULL STOP
+FE54..FE57    ; Po #   [4] SMALL SEMICOLON..SMALL EXCLAMATION MARK
+FE5F..FE61    ; Po #   [3] SMALL NUMBER SIGN..SMALL ASTERISK
+FE68          ; Po #       SMALL REVERSE SOLIDUS
+FE6A..FE6B    ; Po #   [2] SMALL PERCENT SIGN..SMALL COMMERCIAL AT
+FF01..FF03    ; Po #   [3] FULLWIDTH EXCLAMATION MARK..FULLWIDTH NUMBER SIGN
+FF05..FF07    ; Po #   [3] FULLWIDTH PERCENT SIGN..FULLWIDTH APOSTROPHE
+FF0A          ; Po #       FULLWIDTH ASTERISK
+FF0C          ; Po #       FULLWIDTH COMMA
+FF0E..FF0F    ; Po #   [2] FULLWIDTH FULL STOP..FULLWIDTH SOLIDUS
+FF1A..FF1B    ; Po #   [2] FULLWIDTH COLON..FULLWIDTH SEMICOLON
+FF1F..FF20    ; Po #   [2] FULLWIDTH QUESTION MARK..FULLWIDTH COMMERCIAL AT
+FF3C          ; Po #       FULLWIDTH REVERSE SOLIDUS
+FF61          ; Po #       HALFWIDTH IDEOGRAPHIC FULL STOP
+FF64..FF65    ; Po #   [2] HALFWIDTH IDEOGRAPHIC COMMA..HALFWIDTH KATAKANA MIDDLE DOT
+10100..10102  ; Po #   [3] AEGEAN WORD SEPARATOR LINE..AEGEAN CHECK MARK
+1039F         ; Po #       UGARITIC WORD DIVIDER
+103D0         ; Po #       OLD PERSIAN WORD DIVIDER
+1056F         ; Po #       CAUCASIAN ALBANIAN CITATION MARK
+10857         ; Po #       IMPERIAL ARAMAIC SECTION SIGN
+1091F         ; Po #       PHOENICIAN WORD SEPARATOR
+1093F         ; Po #       LYDIAN TRIANGULAR MARK
+10A50..10A58  ; Po #   [9] KHAROSHTHI PUNCTUATION DOT..KHAROSHTHI PUNCTUATION LINES
+10A7F         ; Po #       OLD SOUTH ARABIAN NUMERIC INDICATOR
+10AF0..10AF6  ; Po #   [7] MANICHAEAN PUNCTUATION STAR..MANICHAEAN PUNCTUATION LINE FILLER
+10B39..10B3F  ; Po #   [7] AVESTAN ABBREVIATION MARK..LARGE ONE RING OVER TWO RINGS PUNCTUATION
+10B99..10B9C  ; Po #   [4] PSALTER PAHLAVI SECTION MARK..PSALTER PAHLAVI FOUR DOTS WITH DOT
+10F55..10F59  ; Po #   [5] SOGDIAN PUNCTUATION TWO VERTICAL BARS..SOGDIAN PUNCTUATION HALF CIRCLE WITH DOT
+10F86..10F89  ; Po #   [4] OLD UYGHUR PUNCTUATION BAR..OLD UYGHUR PUNCTUATION FOUR DOTS
+11047..1104D  ; Po #   [7] BRAHMI DANDA..BRAHMI PUNCTUATION LOTUS
+110BB..110BC  ; Po #   [2] KAITHI ABBREVIATION SIGN..KAITHI ENUMERATION SIGN
+110BE..110C1  ; Po #   [4] KAITHI SECTION MARK..KAITHI DOUBLE DANDA
+11140..11143  ; Po #   [4] CHAKMA SECTION MARK..CHAKMA QUESTION MARK
+11174..11175  ; Po #   [2] MAHAJANI ABBREVIATION SIGN..MAHAJANI SECTION MARK
+111C5..111C8  ; Po #   [4] SHARADA DANDA..SHARADA SEPARATOR
+111CD         ; Po #       SHARADA SUTRA MARK
+111DB         ; Po #       SHARADA SIGN SIDDHAM
+111DD..111DF  ; Po #   [3] SHARADA CONTINUATION SIGN..SHARADA SECTION MARK-2
+11238..1123D  ; Po #   [6] KHOJKI DANDA..KHOJKI ABBREVIATION SIGN
+112A9         ; Po #       MULTANI SECTION MARK
+1144B..1144F  ; Po #   [5] NEWA DANDA..NEWA ABBREVIATION SIGN
+1145A..1145B  ; Po #   [2] NEWA DOUBLE COMMA..NEWA PLACEHOLDER MARK
+1145D         ; Po #       NEWA INSERTION SIGN
+114C6         ; Po #       TIRHUTA ABBREVIATION SIGN
+115C1..115D7  ; Po #  [23] SIDDHAM SIGN SIDDHAM..SIDDHAM SECTION MARK WITH CIRCLES AND FOUR ENCLOSURES
+11641..11643  ; Po #   [3] MODI DANDA..MODI ABBREVIATION SIGN
+11660..1166C  ; Po #  [13] MONGOLIAN BIRGA WITH ORNAMENT..MONGOLIAN TURNED SWIRL BIRGA WITH DOUBLE ORNAMENT
+116B9         ; Po #       TAKRI ABBREVIATION SIGN
+1173C..1173E  ; Po #   [3] AHOM SIGN SMALL SECTION..AHOM SIGN RULAI
+1183B         ; Po #       DOGRA ABBREVIATION SIGN
+11944..11946  ; Po #   [3] DIVES AKURU DOUBLE DANDA..DIVES AKURU END OF TEXT MARK
+119E2         ; Po #       NANDINAGARI SIGN SIDDHAM
+11A3F..11A46  ; Po #   [8] ZANABAZAR SQUARE INITIAL HEAD MARK..ZANABAZAR SQUARE CLOSING DOUBLE-LINED HEAD MARK
+11A9A..11A9C  ; Po #   [3] SOYOMBO MARK TSHEG..SOYOMBO MARK DOUBLE SHAD
+11A9E..11AA2  ; Po #   [5] SOYOMBO HEAD MARK WITH MOON AND SUN AND TRIPLE FLAME..SOYOMBO TERMINAL MARK-2
+11B00..11B09  ; Po #  [10] DEVANAGARI HEAD MARK..DEVANAGARI SIGN MINDU
+11C41..11C45  ; Po #   [5] BHAIKSUKI DANDA..BHAIKSUKI GAP FILLER-2
+11C70..11C71  ; Po #   [2] MARCHEN HEAD MARK..MARCHEN MARK SHAD
+11EF7..11EF8  ; Po #   [2] MAKASAR PASSIMBANG..MAKASAR END OF SECTION
+11F43..11F4F  ; Po #  [13] KAWI DANDA..KAWI PUNCTUATION CLOSING SPIRAL
+11FFF         ; Po #       TAMIL PUNCTUATION END OF TEXT
+12470..12474  ; Po #   [5] CUNEIFORM PUNCTUATION SIGN OLD ASSYRIAN WORD DIVIDER..CUNEIFORM PUNCTUATION SIGN DIAGONAL QUADCOLON
+12FF1..12FF2  ; Po #   [2] CYPRO-MINOAN SIGN CM301..CYPRO-MINOAN SIGN CM302
+16A6E..16A6F  ; Po #   [2] MRO DANDA..MRO DOUBLE DANDA
+16AF5         ; Po #       BASSA VAH FULL STOP
+16B37..16B3B  ; Po #   [5] PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN VOS FEEM
+16B44         ; Po #       PAHAWH HMONG SIGN XAUS
+16E97..16E9A  ; Po #   [4] MEDEFAIDRIN COMMA..MEDEFAIDRIN EXCLAMATION OH
+16FE2         ; Po #       OLD CHINESE HOOK MARK
+1BC9F         ; Po #       DUPLOYAN PUNCTUATION CHINOOK FULL STOP
+1DA87..1DA8B  ; Po #   [5] SIGNWRITING COMMA..SIGNWRITING PARENTHESIS
+1E95E..1E95F  ; Po #   [2] ADLAM INITIAL EXCLAMATION MARK..ADLAM INITIAL QUESTION MARK
+
+# Total code points: 628
+
+# ================================================
+
+# General_Category=Math_Symbol
+
+002B          ; Sm #       PLUS SIGN
+003C..003E    ; Sm #   [3] LESS-THAN SIGN..GREATER-THAN SIGN
+007C          ; Sm #       VERTICAL LINE
+007E          ; Sm #       TILDE
+00AC          ; Sm #       NOT SIGN
+00B1          ; Sm #       PLUS-MINUS SIGN
+00D7          ; Sm #       MULTIPLICATION SIGN
+00F7          ; Sm #       DIVISION SIGN
+03F6          ; Sm #       GREEK REVERSED LUNATE EPSILON SYMBOL
+0606..0608    ; Sm #   [3] ARABIC-INDIC CUBE ROOT..ARABIC RAY
+2044          ; Sm #       FRACTION SLASH
+2052          ; Sm #       COMMERCIAL MINUS SIGN
+207A..207C    ; Sm #   [3] SUPERSCRIPT PLUS SIGN..SUPERSCRIPT EQUALS SIGN
+208A..208C    ; Sm #   [3] SUBSCRIPT PLUS SIGN..SUBSCRIPT EQUALS SIGN
+2118          ; Sm #       SCRIPT CAPITAL P
+2140..2144    ; Sm #   [5] DOUBLE-STRUCK N-ARY SUMMATION..TURNED SANS-SERIF CAPITAL Y
+214B          ; Sm #       TURNED AMPERSAND
+2190..2194    ; Sm #   [5] LEFTWARDS ARROW..LEFT RIGHT ARROW
+219A..219B    ; Sm #   [2] LEFTWARDS ARROW WITH STROKE..RIGHTWARDS ARROW WITH STROKE
+21A0          ; Sm #       RIGHTWARDS TWO HEADED ARROW
+21A3          ; Sm #       RIGHTWARDS ARROW WITH TAIL
+21A6          ; Sm #       RIGHTWARDS ARROW FROM BAR
+21AE          ; Sm #       LEFT RIGHT ARROW WITH STROKE
+21CE..21CF    ; Sm #   [2] LEFT RIGHT DOUBLE ARROW WITH STROKE..RIGHTWARDS DOUBLE ARROW WITH STROKE
+21D2          ; Sm #       RIGHTWARDS DOUBLE ARROW
+21D4          ; Sm #       LEFT RIGHT DOUBLE ARROW
+21F4..22FF    ; Sm # [268] RIGHT ARROW WITH SMALL CIRCLE..Z NOTATION BAG MEMBERSHIP
+2320..2321    ; Sm #   [2] TOP HALF INTEGRAL..BOTTOM HALF INTEGRAL
+237C          ; Sm #       RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW
+239B..23B3    ; Sm #  [25] LEFT PARENTHESIS UPPER HOOK..SUMMATION BOTTOM
+23DC..23E1    ; Sm #   [6] TOP PARENTHESIS..BOTTOM TORTOISE SHELL BRACKET
+25B7          ; Sm #       WHITE RIGHT-POINTING TRIANGLE
+25C1          ; Sm #       WHITE LEFT-POINTING TRIANGLE
+25F8..25FF    ; Sm #   [8] UPPER LEFT TRIANGLE..LOWER RIGHT TRIANGLE
+266F          ; Sm #       MUSIC SHARP SIGN
+27C0..27C4    ; Sm #   [5] THREE DIMENSIONAL ANGLE..OPEN SUPERSET
+27C7..27E5    ; Sm #  [31] OR WITH DOT INSIDE..WHITE SQUARE WITH RIGHTWARDS TICK
+27F0..27FF    ; Sm #  [16] UPWARDS QUADRUPLE ARROW..LONG RIGHTWARDS SQUIGGLE ARROW
+2900..2982    ; Sm # [131] RIGHTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE..Z NOTATION TYPE COLON
+2999..29D7    ; Sm #  [63] DOTTED FENCE..BLACK HOURGLASS
+29DC..29FB    ; Sm #  [32] INCOMPLETE INFINITY..TRIPLE PLUS
+29FE..2AFF    ; Sm # [258] TINY..N-ARY WHITE VERTICAL BAR
+2B30..2B44    ; Sm #  [21] LEFT ARROW WITH SMALL CIRCLE..RIGHTWARDS ARROW THROUGH SUPERSET
+2B47..2B4C    ; Sm #   [6] REVERSE TILDE OPERATOR ABOVE RIGHTWARDS ARROW..RIGHTWARDS ARROW ABOVE REVERSE TILDE OPERATOR
+FB29          ; Sm #       HEBREW LETTER ALTERNATIVE PLUS SIGN
+FE62          ; Sm #       SMALL PLUS SIGN
+FE64..FE66    ; Sm #   [3] SMALL LESS-THAN SIGN..SMALL EQUALS SIGN
+FF0B          ; Sm #       FULLWIDTH PLUS SIGN
+FF1C..FF1E    ; Sm #   [3] FULLWIDTH LESS-THAN SIGN..FULLWIDTH GREATER-THAN SIGN
+FF5C          ; Sm #       FULLWIDTH VERTICAL LINE
+FF5E          ; Sm #       FULLWIDTH TILDE
+FFE2          ; Sm #       FULLWIDTH NOT SIGN
+FFE9..FFEC    ; Sm #   [4] HALFWIDTH LEFTWARDS ARROW..HALFWIDTH DOWNWARDS ARROW
+1D6C1         ; Sm #       MATHEMATICAL BOLD NABLA
+1D6DB         ; Sm #       MATHEMATICAL BOLD PARTIAL DIFFERENTIAL
+1D6FB         ; Sm #       MATHEMATICAL ITALIC NABLA
+1D715         ; Sm #       MATHEMATICAL ITALIC PARTIAL DIFFERENTIAL
+1D735         ; Sm #       MATHEMATICAL BOLD ITALIC NABLA
+1D74F         ; Sm #       MATHEMATICAL BOLD ITALIC PARTIAL DIFFERENTIAL
+1D76F         ; Sm #       MATHEMATICAL SANS-SERIF BOLD NABLA
+1D789         ; Sm #       MATHEMATICAL SANS-SERIF BOLD PARTIAL DIFFERENTIAL
+1D7A9         ; Sm #       MATHEMATICAL SANS-SERIF BOLD ITALIC NABLA
+1D7C3         ; Sm #       MATHEMATICAL SANS-SERIF BOLD ITALIC PARTIAL DIFFERENTIAL
+1EEF0..1EEF1  ; Sm #   [2] ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WITH TATWEEL..ARABIC MATHEMATICAL OPERATOR HAH WITH DAL
+
+# Total code points: 948
+
+# ================================================
+
+# General_Category=Currency_Symbol
+
+0024          ; Sc #       DOLLAR SIGN
+00A2..00A5    ; Sc #   [4] CENT SIGN..YEN SIGN
+058F          ; Sc #       ARMENIAN DRAM SIGN
+060B          ; Sc #       AFGHANI SIGN
+07FE..07FF    ; Sc #   [2] NKO DOROME SIGN..NKO TAMAN SIGN
+09F2..09F3    ; Sc #   [2] BENGALI RUPEE MARK..BENGALI RUPEE SIGN
+09FB          ; Sc #       BENGALI GANDA MARK
+0AF1          ; Sc #       GUJARATI RUPEE SIGN
+0BF9          ; Sc #       TAMIL RUPEE SIGN
+0E3F          ; Sc #       THAI CURRENCY SYMBOL BAHT
+17DB          ; Sc #       KHMER CURRENCY SYMBOL RIEL
+20A0..20C0    ; Sc #  [33] EURO-CURRENCY SIGN..SOM SIGN
+A838          ; Sc #       NORTH INDIC RUPEE MARK
+FDFC          ; Sc #       RIAL SIGN
+FE69          ; Sc #       SMALL DOLLAR SIGN
+FF04          ; Sc #       FULLWIDTH DOLLAR SIGN
+FFE0..FFE1    ; Sc #   [2] FULLWIDTH CENT SIGN..FULLWIDTH POUND SIGN
+FFE5..FFE6    ; Sc #   [2] FULLWIDTH YEN SIGN..FULLWIDTH WON SIGN
+11FDD..11FE0  ; Sc #   [4] TAMIL SIGN KAACU..TAMIL SIGN VARAAKAN
+1E2FF         ; Sc #       WANCHO NGUN SIGN
+1ECB0         ; Sc #       INDIC SIYAQ RUPEE MARK
+
+# Total code points: 63
+
+# ================================================
+
+# General_Category=Modifier_Symbol
+
+005E          ; Sk #       CIRCUMFLEX ACCENT
+0060          ; Sk #       GRAVE ACCENT
+00A8          ; Sk #       DIAERESIS
+00AF          ; Sk #       MACRON
+00B4          ; Sk #       ACUTE ACCENT
+00B8          ; Sk #       CEDILLA
+02C2..02C5    ; Sk #   [4] MODIFIER LETTER LEFT ARROWHEAD..MODIFIER LETTER DOWN ARROWHEAD
+02D2..02DF    ; Sk #  [14] MODIFIER LETTER CENTRED RIGHT HALF RING..MODIFIER LETTER CROSS ACCENT
+02E5..02EB    ; Sk #   [7] MODIFIER LETTER EXTRA-HIGH TONE BAR..MODIFIER LETTER YANG DEPARTING TONE MARK
+02ED          ; Sk #       MODIFIER LETTER UNASPIRATED
+02EF..02FF    ; Sk #  [17] MODIFIER LETTER LOW DOWN ARROWHEAD..MODIFIER LETTER LOW LEFT ARROW
+0375          ; Sk #       GREEK LOWER NUMERAL SIGN
+0384..0385    ; Sk #   [2] GREEK TONOS..GREEK DIALYTIKA TONOS
+0888          ; Sk #       ARABIC RAISED ROUND DOT
+1FBD          ; Sk #       GREEK KORONIS
+1FBF..1FC1    ; Sk #   [3] GREEK PSILI..GREEK DIALYTIKA AND PERISPOMENI
+1FCD..1FCF    ; Sk #   [3] GREEK PSILI AND VARIA..GREEK PSILI AND PERISPOMENI
+1FDD..1FDF    ; Sk #   [3] GREEK DASIA AND VARIA..GREEK DASIA AND PERISPOMENI
+1FED..1FEF    ; Sk #   [3] GREEK DIALYTIKA AND VARIA..GREEK VARIA
+1FFD..1FFE    ; Sk #   [2] GREEK OXIA..GREEK DASIA
+309B..309C    ; Sk #   [2] KATAKANA-HIRAGANA VOICED SOUND MARK..KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+A700..A716    ; Sk #  [23] MODIFIER LETTER CHINESE TONE YIN PING..MODIFIER LETTER EXTRA-LOW LEFT-STEM TONE BAR
+A720..A721    ; Sk #   [2] MODIFIER LETTER STRESS AND HIGH TONE..MODIFIER LETTER STRESS AND LOW TONE
+A789..A78A    ; Sk #   [2] MODIFIER LETTER COLON..MODIFIER LETTER SHORT EQUALS SIGN
+AB5B          ; Sk #       MODIFIER BREVE WITH INVERTED BREVE
+AB6A..AB6B    ; Sk #   [2] MODIFIER LETTER LEFT TACK..MODIFIER LETTER RIGHT TACK
+FBB2..FBC2    ; Sk #  [17] ARABIC SYMBOL DOT ABOVE..ARABIC SYMBOL WASLA ABOVE
+FF3E          ; Sk #       FULLWIDTH CIRCUMFLEX ACCENT
+FF40          ; Sk #       FULLWIDTH GRAVE ACCENT
+FFE3          ; Sk #       FULLWIDTH MACRON
+1F3FB..1F3FF  ; Sk #   [5] EMOJI MODIFIER FITZPATRICK TYPE-1-2..EMOJI MODIFIER FITZPATRICK TYPE-6
+
+# Total code points: 125
+
+# ================================================
+
+# General_Category=Other_Symbol
+
+00A6          ; So #       BROKEN BAR
+00A9          ; So #       COPYRIGHT SIGN
+00AE          ; So #       REGISTERED SIGN
+00B0          ; So #       DEGREE SIGN
+0482          ; So #       CYRILLIC THOUSANDS SIGN
+058D..058E    ; So #   [2] RIGHT-FACING ARMENIAN ETERNITY SIGN..LEFT-FACING ARMENIAN ETERNITY SIGN
+060E..060F    ; So #   [2] ARABIC POETIC VERSE SIGN..ARABIC SIGN MISRA
+06DE          ; So #       ARABIC START OF RUB EL HIZB
+06E9          ; So #       ARABIC PLACE OF SAJDAH
+06FD..06FE    ; So #   [2] ARABIC SIGN SINDHI AMPERSAND..ARABIC SIGN SINDHI POSTPOSITION MEN
+07F6          ; So #       NKO SYMBOL OO DENNEN
+09FA          ; So #       BENGALI ISSHAR
+0B70          ; So #       ORIYA ISSHAR
+0BF3..0BF8    ; So #   [6] TAMIL DAY SIGN..TAMIL AS ABOVE SIGN
+0BFA          ; So #       TAMIL NUMBER SIGN
+0C7F          ; So #       TELUGU SIGN TUUMU
+0D4F          ; So #       MALAYALAM SIGN PARA
+0D79          ; So #       MALAYALAM DATE MARK
+0F01..0F03    ; So #   [3] TIBETAN MARK GTER YIG MGO TRUNCATED A..TIBETAN MARK GTER YIG MGO -UM GTER TSHEG MA
+0F13          ; So #       TIBETAN MARK CARET -DZUD RTAGS ME LONG CAN
+0F15..0F17    ; So #   [3] TIBETAN LOGOTYPE SIGN CHAD RTAGS..TIBETAN ASTROLOGICAL SIGN SGRA GCAN -CHAR RTAGS
+0F1A..0F1F    ; So #   [6] TIBETAN SIGN RDEL DKAR GCIG..TIBETAN SIGN RDEL DKAR RDEL NAG
+0F34          ; So #       TIBETAN MARK BSDUS RTAGS
+0F36          ; So #       TIBETAN MARK CARET -DZUD RTAGS BZHI MIG CAN
+0F38          ; So #       TIBETAN MARK CHE MGO
+0FBE..0FC5    ; So #   [8] TIBETAN KU RU KHA..TIBETAN SYMBOL RDO RJE
+0FC7..0FCC    ; So #   [6] TIBETAN SYMBOL RDO RJE RGYA GRAM..TIBETAN SYMBOL NOR BU BZHI -KHYIL
+0FCE..0FCF    ; So #   [2] TIBETAN SIGN RDEL NAG RDEL DKAR..TIBETAN SIGN RDEL NAG GSUM
+0FD5..0FD8    ; So #   [4] RIGHT-FACING SVASTI SIGN..LEFT-FACING SVASTI SIGN WITH DOTS
+109E..109F    ; So #   [2] MYANMAR SYMBOL SHAN ONE..MYANMAR SYMBOL SHAN EXCLAMATION
+1390..1399    ; So #  [10] ETHIOPIC TONAL MARK YIZET..ETHIOPIC TONAL MARK KURT
+166D          ; So #       CANADIAN SYLLABICS CHI SIGN
+1940          ; So #       LIMBU SIGN LOO
+19DE..19FF    ; So #  [34] NEW TAI LUE SIGN LAE..KHMER SYMBOL DAP-PRAM ROC
+1B61..1B6A    ; So #  [10] BALINESE MUSICAL SYMBOL DONG..BALINESE MUSICAL SYMBOL DANG GEDE
+1B74..1B7C    ; So #   [9] BALINESE MUSICAL SYMBOL RIGHT-HAND OPEN DUG..BALINESE MUSICAL SYMBOL LEFT-HAND OPEN PING
+2100..2101    ; So #   [2] ACCOUNT OF..ADDRESSED TO THE SUBJECT
+2103..2106    ; So #   [4] DEGREE CELSIUS..CADA UNA
+2108..2109    ; So #   [2] SCRUPLE..DEGREE FAHRENHEIT
+2114          ; So #       L B BAR SYMBOL
+2116..2117    ; So #   [2] NUMERO SIGN..SOUND RECORDING COPYRIGHT
+211E..2123    ; So #   [6] PRESCRIPTION TAKE..VERSICLE
+2125          ; So #       OUNCE SIGN
+2127          ; So #       INVERTED OHM SIGN
+2129          ; So #       TURNED GREEK SMALL LETTER IOTA
+212E          ; So #       ESTIMATED SYMBOL
+213A..213B    ; So #   [2] ROTATED CAPITAL Q..FACSIMILE SIGN
+214A          ; So #       PROPERTY LINE
+214C..214D    ; So #   [2] PER SIGN..AKTIESELSKAB
+214F          ; So #       SYMBOL FOR SAMARITAN SOURCE
+218A..218B    ; So #   [2] TURNED DIGIT TWO..TURNED DIGIT THREE
+2195..2199    ; So #   [5] UP DOWN ARROW..SOUTH WEST ARROW
+219C..219F    ; So #   [4] LEFTWARDS WAVE ARROW..UPWARDS TWO HEADED ARROW
+21A1..21A2    ; So #   [2] DOWNWARDS TWO HEADED ARROW..LEFTWARDS ARROW WITH TAIL
+21A4..21A5    ; So #   [2] LEFTWARDS ARROW FROM BAR..UPWARDS ARROW FROM BAR
+21A7..21AD    ; So #   [7] DOWNWARDS ARROW FROM BAR..LEFT RIGHT WAVE ARROW
+21AF..21CD    ; So #  [31] DOWNWARDS ZIGZAG ARROW..LEFTWARDS DOUBLE ARROW WITH STROKE
+21D0..21D1    ; So #   [2] LEFTWARDS DOUBLE ARROW..UPWARDS DOUBLE ARROW
+21D3          ; So #       DOWNWARDS DOUBLE ARROW
+21D5..21F3    ; So #  [31] UP DOWN DOUBLE ARROW..UP DOWN WHITE ARROW
+2300..2307    ; So #   [8] DIAMETER SIGN..WAVY LINE
+230C..231F    ; So #  [20] BOTTOM RIGHT CROP..BOTTOM RIGHT CORNER
+2322..2328    ; So #   [7] FROWN..KEYBOARD
+232B..237B    ; So #  [81] ERASE TO THE LEFT..NOT CHECK MARK
+237D..239A    ; So #  [30] SHOULDERED OPEN BOX..CLEAR SCREEN SYMBOL
+23B4..23DB    ; So #  [40] TOP SQUARE BRACKET..FUSE
+23E2..2426    ; So #  [69] WHITE TRAPEZIUM..SYMBOL FOR SUBSTITUTE FORM TWO
+2440..244A    ; So #  [11] OCR HOOK..OCR DOUBLE BACKSLASH
+249C..24E9    ; So #  [78] PARENTHESIZED LATIN SMALL LETTER A..CIRCLED LATIN SMALL LETTER Z
+2500..25B6    ; So # [183] BOX DRAWINGS LIGHT HORIZONTAL..BLACK RIGHT-POINTING TRIANGLE
+25B8..25C0    ; So #   [9] BLACK RIGHT-POINTING SMALL TRIANGLE..BLACK LEFT-POINTING TRIANGLE
+25C2..25F7    ; So #  [54] BLACK LEFT-POINTING SMALL TRIANGLE..WHITE CIRCLE WITH UPPER RIGHT QUADRANT
+2600..266E    ; So # [111] BLACK SUN WITH RAYS..MUSIC NATURAL SIGN
+2670..2767    ; So # [248] WEST SYRIAC CROSS..ROTATED FLORAL HEART BULLET
+2794..27BF    ; So #  [44] HEAVY WIDE-HEADED RIGHTWARDS ARROW..DOUBLE CURLY LOOP
+2800..28FF    ; So # [256] BRAILLE PATTERN BLANK..BRAILLE PATTERN DOTS-12345678
+2B00..2B2F    ; So #  [48] NORTH EAST WHITE ARROW..WHITE VERTICAL ELLIPSE
+2B45..2B46    ; So #   [2] LEFTWARDS QUADRUPLE ARROW..RIGHTWARDS QUADRUPLE ARROW
+2B4D..2B73    ; So #  [39] DOWNWARDS TRIANGLE-HEADED ZIGZAG ARROW..DOWNWARDS TRIANGLE-HEADED ARROW TO BAR
+2B76..2B95    ; So #  [32] NORTH WEST TRIANGLE-HEADED ARROW TO BAR..RIGHTWARDS BLACK ARROW
+2B97..2BFF    ; So # [105] SYMBOL FOR TYPE A ELECTRONICS..HELLSCHREIBER PAUSE SYMBOL
+2CE5..2CEA    ; So #   [6] COPTIC SYMBOL MI RO..COPTIC SYMBOL SHIMA SIMA
+2E50..2E51    ; So #   [2] CROSS PATTY WITH RIGHT CROSSBAR..CROSS PATTY WITH LEFT CROSSBAR
+2E80..2E99    ; So #  [26] CJK RADICAL REPEAT..CJK RADICAL RAP
+2E9B..2EF3    ; So #  [89] CJK RADICAL CHOKE..CJK RADICAL C-SIMPLIFIED TURTLE
+2F00..2FD5    ; So # [214] KANGXI RADICAL ONE..KANGXI RADICAL FLUTE
+2FF0..2FFB    ; So #  [12] IDEOGRAPHIC DESCRIPTION CHARACTER LEFT TO RIGHT..IDEOGRAPHIC DESCRIPTION CHARACTER OVERLAID
+3004          ; So #       JAPANESE INDUSTRIAL STANDARD SYMBOL
+3012..3013    ; So #   [2] POSTAL MARK..GETA MARK
+3020          ; So #       POSTAL MARK FACE
+3036..3037    ; So #   [2] CIRCLED POSTAL MARK..IDEOGRAPHIC TELEGRAPH LINE FEED SEPARATOR SYMBOL
+303E..303F    ; So #   [2] IDEOGRAPHIC VARIATION INDICATOR..IDEOGRAPHIC HALF FILL SPACE
+3190..3191    ; So #   [2] IDEOGRAPHIC ANNOTATION LINKING MARK..IDEOGRAPHIC ANNOTATION REVERSE MARK
+3196..319F    ; So #  [10] IDEOGRAPHIC ANNOTATION TOP MARK..IDEOGRAPHIC ANNOTATION MAN MARK
+31C0..31E3    ; So #  [36] CJK STROKE T..CJK STROKE Q
+3200..321E    ; So #  [31] PARENTHESIZED HANGUL KIYEOK..PARENTHESIZED KOREAN CHARACTER O HU
+322A..3247    ; So #  [30] PARENTHESIZED IDEOGRAPH MOON..CIRCLED IDEOGRAPH KOTO
+3250          ; So #       PARTNERSHIP SIGN
+3260..327F    ; So #  [32] CIRCLED HANGUL KIYEOK..KOREAN STANDARD SYMBOL
+328A..32B0    ; So #  [39] CIRCLED IDEOGRAPH MOON..CIRCLED IDEOGRAPH NIGHT
+32C0..33FF    ; So # [320] IDEOGRAPHIC TELEGRAPH SYMBOL FOR JANUARY..SQUARE GAL
+4DC0..4DFF    ; So #  [64] HEXAGRAM FOR THE CREATIVE HEAVEN..HEXAGRAM FOR BEFORE COMPLETION
+A490..A4C6    ; So #  [55] YI RADICAL QOT..YI RADICAL KE
+A828..A82B    ; So #   [4] SYLOTI NAGRI POETRY MARK-1..SYLOTI NAGRI POETRY MARK-4
+A836..A837    ; So #   [2] NORTH INDIC QUARTER MARK..NORTH INDIC PLACEHOLDER MARK
+A839          ; So #       NORTH INDIC QUANTITY MARK
+AA77..AA79    ; So #   [3] MYANMAR SYMBOL AITON EXCLAMATION..MYANMAR SYMBOL AITON TWO
+FD40..FD4F    ; So #  [16] ARABIC LIGATURE RAHIMAHU ALLAAH..ARABIC LIGATURE RAHIMAHUM ALLAAH
+FDCF          ; So #       ARABIC LIGATURE SALAAMUHU ALAYNAA
+FDFD..FDFF    ; So #   [3] ARABIC LIGATURE BISMILLAH AR-RAHMAN AR-RAHEEM..ARABIC LIGATURE AZZA WA JALL
+FFE4          ; So #       FULLWIDTH BROKEN BAR
+FFE8          ; So #       HALFWIDTH FORMS LIGHT VERTICAL
+FFED..FFEE    ; So #   [2] HALFWIDTH BLACK SQUARE..HALFWIDTH WHITE CIRCLE
+FFFC..FFFD    ; So #   [2] OBJECT REPLACEMENT CHARACTER..REPLACEMENT CHARACTER
+10137..1013F  ; So #   [9] AEGEAN WEIGHT BASE UNIT..AEGEAN MEASURE THIRD SUBUNIT
+10179..10189  ; So #  [17] GREEK YEAR SIGN..GREEK TRYBLION BASE SIGN
+1018C..1018E  ; So #   [3] GREEK SINUSOID SIGN..NOMISMA SIGN
+10190..1019C  ; So #  [13] ROMAN SEXTANS SIGN..ASCIA SYMBOL
+101A0         ; So #       GREEK SYMBOL TAU RHO
+101D0..101FC  ; So #  [45] PHAISTOS DISC SIGN PEDESTRIAN..PHAISTOS DISC SIGN WAVY BAND
+10877..10878  ; So #   [2] PALMYRENE LEFT-POINTING FLEURON..PALMYRENE RIGHT-POINTING FLEURON
+10AC8         ; So #       MANICHAEAN SIGN UD
+1173F         ; So #       AHOM SYMBOL VI
+11FD5..11FDC  ; So #   [8] TAMIL SIGN NEL..TAMIL SIGN MUKKURUNI
+11FE1..11FF1  ; So #  [17] TAMIL SIGN PAARAM..TAMIL SIGN VAKAIYARAA
+16B3C..16B3F  ; So #   [4] PAHAWH HMONG SIGN XYEEM NTXIV..PAHAWH HMONG SIGN XYEEM FAIB
+16B45         ; So #       PAHAWH HMONG SIGN CIM TSOV ROG
+1BC9C         ; So #       DUPLOYAN SIGN O WITH CROSS
+1CF50..1CFC3  ; So # [116] ZNAMENNY NEUME KRYUK..ZNAMENNY NEUME PAUK
+1D000..1D0F5  ; So # [246] BYZANTINE MUSICAL SYMBOL PSILI..BYZANTINE MUSICAL SYMBOL GORGON NEO KATO
+1D100..1D126  ; So #  [39] MUSICAL SYMBOL SINGLE BARLINE..MUSICAL SYMBOL DRUM CLEF-2
+1D129..1D164  ; So #  [60] MUSICAL SYMBOL MULTIPLE MEASURE REST..MUSICAL SYMBOL ONE HUNDRED TWENTY-EIGHTH NOTE
+1D16A..1D16C  ; So #   [3] MUSICAL SYMBOL FINGERED TREMOLO-1..MUSICAL SYMBOL FINGERED TREMOLO-3
+1D183..1D184  ; So #   [2] MUSICAL SYMBOL ARPEGGIATO UP..MUSICAL SYMBOL ARPEGGIATO DOWN
+1D18C..1D1A9  ; So #  [30] MUSICAL SYMBOL RINFORZANDO..MUSICAL SYMBOL DEGREE SLASH
+1D1AE..1D1EA  ; So #  [61] MUSICAL SYMBOL PEDAL MARK..MUSICAL SYMBOL KORON
+1D200..1D241  ; So #  [66] GREEK VOCAL NOTATION SYMBOL-1..GREEK INSTRUMENTAL NOTATION SYMBOL-54
+1D245         ; So #       GREEK MUSICAL LEIMMA
+1D300..1D356  ; So #  [87] MONOGRAM FOR EARTH..TETRAGRAM FOR FOSTERING
+1D800..1D9FF  ; So # [512] SIGNWRITING HAND-FIST INDEX..SIGNWRITING HEAD
+1DA37..1DA3A  ; So #   [4] SIGNWRITING AIR BLOW SMALL ROTATIONS..SIGNWRITING BREATH EXHALE
+1DA6D..1DA74  ; So #   [8] SIGNWRITING SHOULDER HIP SPINE..SIGNWRITING TORSO-FLOORPLANE TWISTING
+1DA76..1DA83  ; So #  [14] SIGNWRITING LIMB COMBINATION..SIGNWRITING LOCATION DEPTH
+1DA85..1DA86  ; So #   [2] SIGNWRITING LOCATION TORSO..SIGNWRITING LOCATION LIMBS DIGITS
+1E14F         ; So #       NYIAKENG PUACHUE HMONG CIRCLED CA
+1ECAC         ; So #       INDIC SIYAQ PLACEHOLDER
+1ED2E         ; So #       OTTOMAN SIYAQ MARRATAN
+1F000..1F02B  ; So #  [44] MAHJONG TILE EAST WIND..MAHJONG TILE BACK
+1F030..1F093  ; So # [100] DOMINO TILE HORIZONTAL BACK..DOMINO TILE VERTICAL-06-06
+1F0A0..1F0AE  ; So #  [15] PLAYING CARD BACK..PLAYING CARD KING OF SPADES
+1F0B1..1F0BF  ; So #  [15] PLAYING CARD ACE OF HEARTS..PLAYING CARD RED JOKER
+1F0C1..1F0CF  ; So #  [15] PLAYING CARD ACE OF DIAMONDS..PLAYING CARD BLACK JOKER
+1F0D1..1F0F5  ; So #  [37] PLAYING CARD ACE OF CLUBS..PLAYING CARD TRUMP-21
+1F10D..1F1AD  ; So # [161] CIRCLED ZERO WITH SLASH..MASK WORK SYMBOL
+1F1E6..1F202  ; So #  [29] REGIONAL INDICATOR SYMBOL LETTER A..SQUARED KATAKANA SA
+1F210..1F23B  ; So #  [44] SQUARED CJK UNIFIED IDEOGRAPH-624B..SQUARED CJK UNIFIED IDEOGRAPH-914D
+1F240..1F248  ; So #   [9] TORTOISE SHELL BRACKETED CJK UNIFIED IDEOGRAPH-672C..TORTOISE SHELL BRACKETED CJK UNIFIED IDEOGRAPH-6557
+1F250..1F251  ; So #   [2] CIRCLED IDEOGRAPH ADVANTAGE..CIRCLED IDEOGRAPH ACCEPT
+1F260..1F265  ; So #   [6] ROUNDED SYMBOL FOR FU..ROUNDED SYMBOL FOR CAI
+1F300..1F3FA  ; So # [251] CYCLONE..AMPHORA
+1F400..1F6D7  ; So # [728] RAT..ELEVATOR
+1F6DC..1F6EC  ; So #  [17] WIRELESS..AIRPLANE ARRIVING
+1F6F0..1F6FC  ; So #  [13] SATELLITE..ROLLER SKATE
+1F700..1F776  ; So # [119] ALCHEMICAL SYMBOL FOR QUINTESSENCE..LUNAR ECLIPSE
+1F77B..1F7D9  ; So #  [95] HAUMEA..NINE POINTED WHITE STAR
+1F7E0..1F7EB  ; So #  [12] LARGE ORANGE CIRCLE..LARGE BROWN SQUARE
+1F7F0         ; So #       HEAVY EQUALS SIGN
+1F800..1F80B  ; So #  [12] LEFTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD..DOWNWARDS ARROW WITH LARGE TRIANGLE ARROWHEAD
+1F810..1F847  ; So #  [56] LEFTWARDS ARROW WITH SMALL EQUILATERAL ARROWHEAD..DOWNWARDS HEAVY ARROW
+1F850..1F859  ; So #  [10] LEFTWARDS SANS-SERIF ARROW..UP DOWN SANS-SERIF ARROW
+1F860..1F887  ; So #  [40] WIDE-HEADED LEFTWARDS LIGHT BARB ARROW..WIDE-HEADED SOUTH WEST VERY HEAVY BARB ARROW
+1F890..1F8AD  ; So #  [30] LEFTWARDS TRIANGLE ARROWHEAD..WHITE ARROW SHAFT WIDTH TWO THIRDS
+1F8B0..1F8B1  ; So #   [2] ARROW POINTING UPWARDS THEN NORTH WEST..ARROW POINTING RIGHTWARDS THEN CURVING SOUTH WEST
+1F900..1FA53  ; So # [340] CIRCLED CROSS FORMEE WITH FOUR DOTS..BLACK CHESS KNIGHT-BISHOP
+1FA60..1FA6D  ; So #  [14] XIANGQI RED GENERAL..XIANGQI BLACK SOLDIER
+1FA70..1FA7C  ; So #  [13] BALLET SHOES..CRUTCH
+1FA80..1FA88  ; So #   [9] YO-YO..FLUTE
+1FA90..1FABD  ; So #  [46] RINGED PLANET..WING
+1FABF..1FAC5  ; So #   [7] GOOSE..PERSON WITH CROWN
+1FACE..1FADB  ; So #  [14] MOOSE..PEA POD
+1FAE0..1FAE8  ; So #   [9] MELTING FACE..SHAKING FACE
+1FAF0..1FAF8  ; So #   [9] HAND WITH INDEX FINGER AND THUMB CROSSED..RIGHTWARDS PUSHING HAND
+1FB00..1FB92  ; So # [147] BLOCK SEXTANT-1..UPPER HALF INVERSE MEDIUM SHADE AND LOWER HALF BLOCK
+1FB94..1FBCA  ; So #  [55] LEFT HALF INVERSE MEDIUM SHADE AND RIGHT HALF BLOCK..WHITE UP-POINTING CHEVRON
+
+# Total code points: 6634
+
+# ================================================
+
+# General_Category=Initial_Punctuation
+
+00AB          ; Pi #       LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
+2018          ; Pi #       LEFT SINGLE QUOTATION MARK
+201B..201C    ; Pi #   [2] SINGLE HIGH-REVERSED-9 QUOTATION MARK..LEFT DOUBLE QUOTATION MARK
+201F          ; Pi #       DOUBLE HIGH-REVERSED-9 QUOTATION MARK
+2039          ; Pi #       SINGLE LEFT-POINTING ANGLE QUOTATION MARK
+2E02          ; Pi #       LEFT SUBSTITUTION BRACKET
+2E04          ; Pi #       LEFT DOTTED SUBSTITUTION BRACKET
+2E09          ; Pi #       LEFT TRANSPOSITION BRACKET
+2E0C          ; Pi #       LEFT RAISED OMISSION BRACKET
+2E1C          ; Pi #       LEFT LOW PARAPHRASE BRACKET
+2E20          ; Pi #       LEFT VERTICAL BAR WITH QUILL
+
+# Total code points: 12
+
+# ================================================
+
+# General_Category=Final_Punctuation
+
+00BB          ; Pf #       RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
+2019          ; Pf #       RIGHT SINGLE QUOTATION MARK
+201D          ; Pf #       RIGHT DOUBLE QUOTATION MARK
+203A          ; Pf #       SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
+2E03          ; Pf #       RIGHT SUBSTITUTION BRACKET
+2E05          ; Pf #       RIGHT DOTTED SUBSTITUTION BRACKET
+2E0A          ; Pf #       RIGHT TRANSPOSITION BRACKET
+2E0D          ; Pf #       RIGHT RAISED OMISSION BRACKET
+2E1D          ; Pf #       RIGHT LOW PARAPHRASE BRACKET
+2E21          ; Pf #       RIGHT VERTICAL BAR WITH QUILL
+
+# Total code points: 10
+
+# EOF
diff --git a/app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakProperty.txt b/app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakProperty.txt
new file mode 100644
index 0000000..a12b5ee
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakProperty.txt
@@ -0,0 +1,1475 @@
+# GraphemeBreakProperty-15.0.0.txt
+# Date: 2022-04-27, 17:07:38 GMT
+# © 2022 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+#
+# Unicode Character Database
+#   For documentation, see https://www.unicode.org/reports/tr44/
+
+# ================================================
+
+# Property:	Grapheme_Cluster_Break
+
+#  All code points not explicitly listed for Grapheme_Cluster_Break
+#  have the value Other (XX).
+
+# @missing: 0000..10FFFF; Other
+
+# ================================================
+
+0600..0605    ; Prepend # Cf   [6] ARABIC NUMBER SIGN..ARABIC NUMBER MARK ABOVE
+06DD          ; Prepend # Cf       ARABIC END OF AYAH
+070F          ; Prepend # Cf       SYRIAC ABBREVIATION MARK
+0890..0891    ; Prepend # Cf   [2] ARABIC POUND MARK ABOVE..ARABIC PIASTRE MARK ABOVE
+08E2          ; Prepend # Cf       ARABIC DISPUTED END OF AYAH
+0D4E          ; Prepend # Lo       MALAYALAM LETTER DOT REPH
+110BD         ; Prepend # Cf       KAITHI NUMBER SIGN
+110CD         ; Prepend # Cf       KAITHI NUMBER SIGN ABOVE
+111C2..111C3  ; Prepend # Lo   [2] SHARADA SIGN JIHVAMULIYA..SHARADA SIGN UPADHMANIYA
+1193F         ; Prepend # Lo       DIVES AKURU PREFIXED NASAL SIGN
+11941         ; Prepend # Lo       DIVES AKURU INITIAL RA
+11A3A         ; Prepend # Lo       ZANABAZAR SQUARE CLUSTER-INITIAL LETTER RA
+11A84..11A89  ; Prepend # Lo   [6] SOYOMBO SIGN JIHVAMULIYA..SOYOMBO CLUSTER-INITIAL LETTER SA
+11D46         ; Prepend # Lo       MASARAM GONDI REPHA
+11F02         ; Prepend # Lo       KAWI SIGN REPHA
+
+# Total code points: 27
+
+# ================================================
+
+000D          ; CR # Cc       <control-000D>
+
+# Total code points: 1
+
+# ================================================
+
+000A          ; LF # Cc       <control-000A>
+
+# Total code points: 1
+
+# ================================================
+
+0000..0009    ; Control # Cc  [10] <control-0000>..<control-0009>
+000B..000C    ; Control # Cc   [2] <control-000B>..<control-000C>
+000E..001F    ; Control # Cc  [18] <control-000E>..<control-001F>
+007F..009F    ; Control # Cc  [33] <control-007F>..<control-009F>
+00AD          ; Control # Cf       SOFT HYPHEN
+061C          ; Control # Cf       ARABIC LETTER MARK
+180E          ; Control # Cf       MONGOLIAN VOWEL SEPARATOR
+200B          ; Control # Cf       ZERO WIDTH SPACE
+200E..200F    ; Control # Cf   [2] LEFT-TO-RIGHT MARK..RIGHT-TO-LEFT MARK
+2028          ; Control # Zl       LINE SEPARATOR
+2029          ; Control # Zp       PARAGRAPH SEPARATOR
+202A..202E    ; Control # Cf   [5] LEFT-TO-RIGHT EMBEDDING..RIGHT-TO-LEFT OVERRIDE
+2060..2064    ; Control # Cf   [5] WORD JOINER..INVISIBLE PLUS
+2065          ; Control # Cn       <reserved-2065>
+2066..206F    ; Control # Cf  [10] LEFT-TO-RIGHT ISOLATE..NOMINAL DIGIT SHAPES
+FEFF          ; Control # Cf       ZERO WIDTH NO-BREAK SPACE
+FFF0..FFF8    ; Control # Cn   [9] <reserved-FFF0>..<reserved-FFF8>
+FFF9..FFFB    ; Control # Cf   [3] INTERLINEAR ANNOTATION ANCHOR..INTERLINEAR ANNOTATION TERMINATOR
+13430..1343F  ; Control # Cf  [16] EGYPTIAN HIEROGLYPH VERTICAL JOINER..EGYPTIAN HIEROGLYPH END WALLED ENCLOSURE
+1BCA0..1BCA3  ; Control # Cf   [4] SHORTHAND FORMAT LETTER OVERLAP..SHORTHAND FORMAT UP STEP
+1D173..1D17A  ; Control # Cf   [8] MUSICAL SYMBOL BEGIN BEAM..MUSICAL SYMBOL END PHRASE
+E0000         ; Control # Cn       <reserved-E0000>
+E0001         ; Control # Cf       LANGUAGE TAG
+E0002..E001F  ; Control # Cn  [30] <reserved-E0002>..<reserved-E001F>
+E0080..E00FF  ; Control # Cn [128] <reserved-E0080>..<reserved-E00FF>
+E01F0..E0FFF  ; Control # Cn [3600] <reserved-E01F0>..<reserved-E0FFF>
+
+# Total code points: 3893
+
+# ================================================
+
+0300..036F    ; Extend # Mn [112] COMBINING GRAVE ACCENT..COMBINING LATIN SMALL LETTER X
+0483..0487    ; Extend # Mn   [5] COMBINING CYRILLIC TITLO..COMBINING CYRILLIC POKRYTIE
+0488..0489    ; Extend # Me   [2] COMBINING CYRILLIC HUNDRED THOUSANDS SIGN..COMBINING CYRILLIC MILLIONS SIGN
+0591..05BD    ; Extend # Mn  [45] HEBREW ACCENT ETNAHTA..HEBREW POINT METEG
+05BF          ; Extend # Mn       HEBREW POINT RAFE
+05C1..05C2    ; Extend # Mn   [2] HEBREW POINT SHIN DOT..HEBREW POINT SIN DOT
+05C4..05C5    ; Extend # Mn   [2] HEBREW MARK UPPER DOT..HEBREW MARK LOWER DOT
+05C7          ; Extend # Mn       HEBREW POINT QAMATS QATAN
+0610..061A    ; Extend # Mn  [11] ARABIC SIGN SALLALLAHOU ALAYHE WASSALLAM..ARABIC SMALL KASRA
+064B..065F    ; Extend # Mn  [21] ARABIC FATHATAN..ARABIC WAVY HAMZA BELOW
+0670          ; Extend # Mn       ARABIC LETTER SUPERSCRIPT ALEF
+06D6..06DC    ; Extend # Mn   [7] ARABIC SMALL HIGH LIGATURE SAD WITH LAM WITH ALEF MAKSURA..ARABIC SMALL HIGH SEEN
+06DF..06E4    ; Extend # Mn   [6] ARABIC SMALL HIGH ROUNDED ZERO..ARABIC SMALL HIGH MADDA
+06E7..06E8    ; Extend # Mn   [2] ARABIC SMALL HIGH YEH..ARABIC SMALL HIGH NOON
+06EA..06ED    ; Extend # Mn   [4] ARABIC EMPTY CENTRE LOW STOP..ARABIC SMALL LOW MEEM
+0711          ; Extend # Mn       SYRIAC LETTER SUPERSCRIPT ALAPH
+0730..074A    ; Extend # Mn  [27] SYRIAC PTHAHA ABOVE..SYRIAC BARREKH
+07A6..07B0    ; Extend # Mn  [11] THAANA ABAFILI..THAANA SUKUN
+07EB..07F3    ; Extend # Mn   [9] NKO COMBINING SHORT HIGH TONE..NKO COMBINING DOUBLE DOT ABOVE
+07FD          ; Extend # Mn       NKO DANTAYALAN
+0816..0819    ; Extend # Mn   [4] SAMARITAN MARK IN..SAMARITAN MARK DAGESH
+081B..0823    ; Extend # Mn   [9] SAMARITAN MARK EPENTHETIC YUT..SAMARITAN VOWEL SIGN A
+0825..0827    ; Extend # Mn   [3] SAMARITAN VOWEL SIGN SHORT A..SAMARITAN VOWEL SIGN U
+0829..082D    ; Extend # Mn   [5] SAMARITAN VOWEL SIGN LONG I..SAMARITAN MARK NEQUDAA
+0859..085B    ; Extend # Mn   [3] MANDAIC AFFRICATION MARK..MANDAIC GEMINATION MARK
+0898..089F    ; Extend # Mn   [8] ARABIC SMALL HIGH WORD AL-JUZ..ARABIC HALF MADDA OVER MADDA
+08CA..08E1    ; Extend # Mn  [24] ARABIC SMALL HIGH FARSI YEH..ARABIC SMALL HIGH SIGN SAFHA
+08E3..0902    ; Extend # Mn  [32] ARABIC TURNED DAMMA BELOW..DEVANAGARI SIGN ANUSVARA
+093A          ; Extend # Mn       DEVANAGARI VOWEL SIGN OE
+093C          ; Extend # Mn       DEVANAGARI SIGN NUKTA
+0941..0948    ; Extend # Mn   [8] DEVANAGARI VOWEL SIGN U..DEVANAGARI VOWEL SIGN AI
+094D          ; Extend # Mn       DEVANAGARI SIGN VIRAMA
+0951..0957    ; Extend # Mn   [7] DEVANAGARI STRESS SIGN UDATTA..DEVANAGARI VOWEL SIGN UUE
+0962..0963    ; Extend # Mn   [2] DEVANAGARI VOWEL SIGN VOCALIC L..DEVANAGARI VOWEL SIGN VOCALIC LL
+0981          ; Extend # Mn       BENGALI SIGN CANDRABINDU
+09BC          ; Extend # Mn       BENGALI SIGN NUKTA
+09BE          ; Extend # Mc       BENGALI VOWEL SIGN AA
+09C1..09C4    ; Extend # Mn   [4] BENGALI VOWEL SIGN U..BENGALI VOWEL SIGN VOCALIC RR
+09CD          ; Extend # Mn       BENGALI SIGN VIRAMA
+09D7          ; Extend # Mc       BENGALI AU LENGTH MARK
+09E2..09E3    ; Extend # Mn   [2] BENGALI VOWEL SIGN VOCALIC L..BENGALI VOWEL SIGN VOCALIC LL
+09FE          ; Extend # Mn       BENGALI SANDHI MARK
+0A01..0A02    ; Extend # Mn   [2] GURMUKHI SIGN ADAK BINDI..GURMUKHI SIGN BINDI
+0A3C          ; Extend # Mn       GURMUKHI SIGN NUKTA
+0A41..0A42    ; Extend # Mn   [2] GURMUKHI VOWEL SIGN U..GURMUKHI VOWEL SIGN UU
+0A47..0A48    ; Extend # Mn   [2] GURMUKHI VOWEL SIGN EE..GURMUKHI VOWEL SIGN AI
+0A4B..0A4D    ; Extend # Mn   [3] GURMUKHI VOWEL SIGN OO..GURMUKHI SIGN VIRAMA
+0A51          ; Extend # Mn       GURMUKHI SIGN UDAAT
+0A70..0A71    ; Extend # Mn   [2] GURMUKHI TIPPI..GURMUKHI ADDAK
+0A75          ; Extend # Mn       GURMUKHI SIGN YAKASH
+0A81..0A82    ; Extend # Mn   [2] GUJARATI SIGN CANDRABINDU..GUJARATI SIGN ANUSVARA
+0ABC          ; Extend # Mn       GUJARATI SIGN NUKTA
+0AC1..0AC5    ; Extend # Mn   [5] GUJARATI VOWEL SIGN U..GUJARATI VOWEL SIGN CANDRA E
+0AC7..0AC8    ; Extend # Mn   [2] GUJARATI VOWEL SIGN E..GUJARATI VOWEL SIGN AI
+0ACD          ; Extend # Mn       GUJARATI SIGN VIRAMA
+0AE2..0AE3    ; Extend # Mn   [2] GUJARATI VOWEL SIGN VOCALIC L..GUJARATI VOWEL SIGN VOCALIC LL
+0AFA..0AFF    ; Extend # Mn   [6] GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE NUKTA ABOVE
+0B01          ; Extend # Mn       ORIYA SIGN CANDRABINDU
+0B3C          ; Extend # Mn       ORIYA SIGN NUKTA
+0B3E          ; Extend # Mc       ORIYA VOWEL SIGN AA
+0B3F          ; Extend # Mn       ORIYA VOWEL SIGN I
+0B41..0B44    ; Extend # Mn   [4] ORIYA VOWEL SIGN U..ORIYA VOWEL SIGN VOCALIC RR
+0B4D          ; Extend # Mn       ORIYA SIGN VIRAMA
+0B55..0B56    ; Extend # Mn   [2] ORIYA SIGN OVERLINE..ORIYA AI LENGTH MARK
+0B57          ; Extend # Mc       ORIYA AU LENGTH MARK
+0B62..0B63    ; Extend # Mn   [2] ORIYA VOWEL SIGN VOCALIC L..ORIYA VOWEL SIGN VOCALIC LL
+0B82          ; Extend # Mn       TAMIL SIGN ANUSVARA
+0BBE          ; Extend # Mc       TAMIL VOWEL SIGN AA
+0BC0          ; Extend # Mn       TAMIL VOWEL SIGN II
+0BCD          ; Extend # Mn       TAMIL SIGN VIRAMA
+0BD7          ; Extend # Mc       TAMIL AU LENGTH MARK
+0C00          ; Extend # Mn       TELUGU SIGN COMBINING CANDRABINDU ABOVE
+0C04          ; Extend # Mn       TELUGU SIGN COMBINING ANUSVARA ABOVE
+0C3C          ; Extend # Mn       TELUGU SIGN NUKTA
+0C3E..0C40    ; Extend # Mn   [3] TELUGU VOWEL SIGN AA..TELUGU VOWEL SIGN II
+0C46..0C48    ; Extend # Mn   [3] TELUGU VOWEL SIGN E..TELUGU VOWEL SIGN AI
+0C4A..0C4D    ; Extend # Mn   [4] TELUGU VOWEL SIGN O..TELUGU SIGN VIRAMA
+0C55..0C56    ; Extend # Mn   [2] TELUGU LENGTH MARK..TELUGU AI LENGTH MARK
+0C62..0C63    ; Extend # Mn   [2] TELUGU VOWEL SIGN VOCALIC L..TELUGU VOWEL SIGN VOCALIC LL
+0C81          ; Extend # Mn       KANNADA SIGN CANDRABINDU
+0CBC          ; Extend # Mn       KANNADA SIGN NUKTA
+0CBF          ; Extend # Mn       KANNADA VOWEL SIGN I
+0CC2          ; Extend # Mc       KANNADA VOWEL SIGN UU
+0CC6          ; Extend # Mn       KANNADA VOWEL SIGN E
+0CCC..0CCD    ; Extend # Mn   [2] KANNADA VOWEL SIGN AU..KANNADA SIGN VIRAMA
+0CD5..0CD6    ; Extend # Mc   [2] KANNADA LENGTH MARK..KANNADA AI LENGTH MARK
+0CE2..0CE3    ; Extend # Mn   [2] KANNADA VOWEL SIGN VOCALIC L..KANNADA VOWEL SIGN VOCALIC LL
+0D00..0D01    ; Extend # Mn   [2] MALAYALAM SIGN COMBINING ANUSVARA ABOVE..MALAYALAM SIGN CANDRABINDU
+0D3B..0D3C    ; Extend # Mn   [2] MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM SIGN CIRCULAR VIRAMA
+0D3E          ; Extend # Mc       MALAYALAM VOWEL SIGN AA
+0D41..0D44    ; Extend # Mn   [4] MALAYALAM VOWEL SIGN U..MALAYALAM VOWEL SIGN VOCALIC RR
+0D4D          ; Extend # Mn       MALAYALAM SIGN VIRAMA
+0D57          ; Extend # Mc       MALAYALAM AU LENGTH MARK
+0D62..0D63    ; Extend # Mn   [2] MALAYALAM VOWEL SIGN VOCALIC L..MALAYALAM VOWEL SIGN VOCALIC LL
+0D81          ; Extend # Mn       SINHALA SIGN CANDRABINDU
+0DCA          ; Extend # Mn       SINHALA SIGN AL-LAKUNA
+0DCF          ; Extend # Mc       SINHALA VOWEL SIGN AELA-PILLA
+0DD2..0DD4    ; Extend # Mn   [3] SINHALA VOWEL SIGN KETTI IS-PILLA..SINHALA VOWEL SIGN KETTI PAA-PILLA
+0DD6          ; Extend # Mn       SINHALA VOWEL SIGN DIGA PAA-PILLA
+0DDF          ; Extend # Mc       SINHALA VOWEL SIGN GAYANUKITTA
+0E31          ; Extend # Mn       THAI CHARACTER MAI HAN-AKAT
+0E34..0E3A    ; Extend # Mn   [7] THAI CHARACTER SARA I..THAI CHARACTER PHINTHU
+0E47..0E4E    ; Extend # Mn   [8] THAI CHARACTER MAITAIKHU..THAI CHARACTER YAMAKKAN
+0EB1          ; Extend # Mn       LAO VOWEL SIGN MAI KAN
+0EB4..0EBC    ; Extend # Mn   [9] LAO VOWEL SIGN I..LAO SEMIVOWEL SIGN LO
+0EC8..0ECE    ; Extend # Mn   [7] LAO TONE MAI EK..LAO YAMAKKAN
+0F18..0F19    ; Extend # Mn   [2] TIBETAN ASTROLOGICAL SIGN -KHYUD PA..TIBETAN ASTROLOGICAL SIGN SDONG TSHUGS
+0F35          ; Extend # Mn       TIBETAN MARK NGAS BZUNG NYI ZLA
+0F37          ; Extend # Mn       TIBETAN MARK NGAS BZUNG SGOR RTAGS
+0F39          ; Extend # Mn       TIBETAN MARK TSA -PHRU
+0F71..0F7E    ; Extend # Mn  [14] TIBETAN VOWEL SIGN AA..TIBETAN SIGN RJES SU NGA RO
+0F80..0F84    ; Extend # Mn   [5] TIBETAN VOWEL SIGN REVERSED I..TIBETAN MARK HALANTA
+0F86..0F87    ; Extend # Mn   [2] TIBETAN SIGN LCI RTAGS..TIBETAN SIGN YANG RTAGS
+0F8D..0F97    ; Extend # Mn  [11] TIBETAN SUBJOINED SIGN LCE TSA CAN..TIBETAN SUBJOINED LETTER JA
+0F99..0FBC    ; Extend # Mn  [36] TIBETAN SUBJOINED LETTER NYA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
+0FC6          ; Extend # Mn       TIBETAN SYMBOL PADMA GDAN
+102D..1030    ; Extend # Mn   [4] MYANMAR VOWEL SIGN I..MYANMAR VOWEL SIGN UU
+1032..1037    ; Extend # Mn   [6] MYANMAR VOWEL SIGN AI..MYANMAR SIGN DOT BELOW
+1039..103A    ; Extend # Mn   [2] MYANMAR SIGN VIRAMA..MYANMAR SIGN ASAT
+103D..103E    ; Extend # Mn   [2] MYANMAR CONSONANT SIGN MEDIAL WA..MYANMAR CONSONANT SIGN MEDIAL HA
+1058..1059    ; Extend # Mn   [2] MYANMAR VOWEL SIGN VOCALIC L..MYANMAR VOWEL SIGN VOCALIC LL
+105E..1060    ; Extend # Mn   [3] MYANMAR CONSONANT SIGN MON MEDIAL NA..MYANMAR CONSONANT SIGN MON MEDIAL LA
+1071..1074    ; Extend # Mn   [4] MYANMAR VOWEL SIGN GEBA KAREN I..MYANMAR VOWEL SIGN KAYAH EE
+1082          ; Extend # Mn       MYANMAR CONSONANT SIGN SHAN MEDIAL WA
+1085..1086    ; Extend # Mn   [2] MYANMAR VOWEL SIGN SHAN E ABOVE..MYANMAR VOWEL SIGN SHAN FINAL Y
+108D          ; Extend # Mn       MYANMAR SIGN SHAN COUNCIL EMPHATIC TONE
+109D          ; Extend # Mn       MYANMAR VOWEL SIGN AITON AI
+135D..135F    ; Extend # Mn   [3] ETHIOPIC COMBINING GEMINATION AND VOWEL LENGTH MARK..ETHIOPIC COMBINING GEMINATION MARK
+1712..1714    ; Extend # Mn   [3] TAGALOG VOWEL SIGN I..TAGALOG SIGN VIRAMA
+1732..1733    ; Extend # Mn   [2] HANUNOO VOWEL SIGN I..HANUNOO VOWEL SIGN U
+1752..1753    ; Extend # Mn   [2] BUHID VOWEL SIGN I..BUHID VOWEL SIGN U
+1772..1773    ; Extend # Mn   [2] TAGBANWA VOWEL SIGN I..TAGBANWA VOWEL SIGN U
+17B4..17B5    ; Extend # Mn   [2] KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT AA
+17B7..17BD    ; Extend # Mn   [7] KHMER VOWEL SIGN I..KHMER VOWEL SIGN UA
+17C6          ; Extend # Mn       KHMER SIGN NIKAHIT
+17C9..17D3    ; Extend # Mn  [11] KHMER SIGN MUUSIKATOAN..KHMER SIGN BATHAMASAT
+17DD          ; Extend # Mn       KHMER SIGN ATTHACAN
+180B..180D    ; Extend # Mn   [3] MONGOLIAN FREE VARIATION SELECTOR ONE..MONGOLIAN FREE VARIATION SELECTOR THREE
+180F          ; Extend # Mn       MONGOLIAN FREE VARIATION SELECTOR FOUR
+1885..1886    ; Extend # Mn   [2] MONGOLIAN LETTER ALI GALI BALUDA..MONGOLIAN LETTER ALI GALI THREE BALUDA
+18A9          ; Extend # Mn       MONGOLIAN LETTER ALI GALI DAGALGA
+1920..1922    ; Extend # Mn   [3] LIMBU VOWEL SIGN A..LIMBU VOWEL SIGN U
+1927..1928    ; Extend # Mn   [2] LIMBU VOWEL SIGN E..LIMBU VOWEL SIGN O
+1932          ; Extend # Mn       LIMBU SMALL LETTER ANUSVARA
+1939..193B    ; Extend # Mn   [3] LIMBU SIGN MUKPHRENG..LIMBU SIGN SA-I
+1A17..1A18    ; Extend # Mn   [2] BUGINESE VOWEL SIGN I..BUGINESE VOWEL SIGN U
+1A1B          ; Extend # Mn       BUGINESE VOWEL SIGN AE
+1A56          ; Extend # Mn       TAI THAM CONSONANT SIGN MEDIAL LA
+1A58..1A5E    ; Extend # Mn   [7] TAI THAM SIGN MAI KANG LAI..TAI THAM CONSONANT SIGN SA
+1A60          ; Extend # Mn       TAI THAM SIGN SAKOT
+1A62          ; Extend # Mn       TAI THAM VOWEL SIGN MAI SAT
+1A65..1A6C    ; Extend # Mn   [8] TAI THAM VOWEL SIGN I..TAI THAM VOWEL SIGN OA BELOW
+1A73..1A7C    ; Extend # Mn  [10] TAI THAM VOWEL SIGN OA ABOVE..TAI THAM SIGN KHUEN-LUE KARAN
+1A7F          ; Extend # Mn       TAI THAM COMBINING CRYPTOGRAMMIC DOT
+1AB0..1ABD    ; Extend # Mn  [14] COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBINING PARENTHESES BELOW
+1ABE          ; Extend # Me       COMBINING PARENTHESES OVERLAY
+1ABF..1ACE    ; Extend # Mn  [16] COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER INSULAR T
+1B00..1B03    ; Extend # Mn   [4] BALINESE SIGN ULU RICEM..BALINESE SIGN SURANG
+1B34          ; Extend # Mn       BALINESE SIGN REREKAN
+1B35          ; Extend # Mc       BALINESE VOWEL SIGN TEDUNG
+1B36..1B3A    ; Extend # Mn   [5] BALINESE VOWEL SIGN ULU..BALINESE VOWEL SIGN RA REPA
+1B3C          ; Extend # Mn       BALINESE VOWEL SIGN LA LENGA
+1B42          ; Extend # Mn       BALINESE VOWEL SIGN PEPET
+1B6B..1B73    ; Extend # Mn   [9] BALINESE MUSICAL SYMBOL COMBINING TEGEH..BALINESE MUSICAL SYMBOL COMBINING GONG
+1B80..1B81    ; Extend # Mn   [2] SUNDANESE SIGN PANYECEK..SUNDANESE SIGN PANGLAYAR
+1BA2..1BA5    ; Extend # Mn   [4] SUNDANESE CONSONANT SIGN PANYAKRA..SUNDANESE VOWEL SIGN PANYUKU
+1BA8..1BA9    ; Extend # Mn   [2] SUNDANESE VOWEL SIGN PAMEPET..SUNDANESE VOWEL SIGN PANEULEUNG
+1BAB..1BAD    ; Extend # Mn   [3] SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SIGN PASANGAN WA
+1BE6          ; Extend # Mn       BATAK SIGN TOMPI
+1BE8..1BE9    ; Extend # Mn   [2] BATAK VOWEL SIGN PAKPAK E..BATAK VOWEL SIGN EE
+1BED          ; Extend # Mn       BATAK VOWEL SIGN KARO O
+1BEF..1BF1    ; Extend # Mn   [3] BATAK VOWEL SIGN U FOR SIMALUNGUN SA..BATAK CONSONANT SIGN H
+1C2C..1C33    ; Extend # Mn   [8] LEPCHA VOWEL SIGN E..LEPCHA CONSONANT SIGN T
+1C36..1C37    ; Extend # Mn   [2] LEPCHA SIGN RAN..LEPCHA SIGN NUKTA
+1CD0..1CD2    ; Extend # Mn   [3] VEDIC TONE KARSHANA..VEDIC TONE PRENKHA
+1CD4..1CE0    ; Extend # Mn  [13] VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC TONE RIGVEDIC KASHMIRI INDEPENDENT SVARITA
+1CE2..1CE8    ; Extend # Mn   [7] VEDIC SIGN VISARGA SVARITA..VEDIC SIGN VISARGA ANUDATTA WITH TAIL
+1CED          ; Extend # Mn       VEDIC SIGN TIRYAK
+1CF4          ; Extend # Mn       VEDIC TONE CANDRA ABOVE
+1CF8..1CF9    ; Extend # Mn   [2] VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING ABOVE
+1DC0..1DFF    ; Extend # Mn  [64] COMBINING DOTTED GRAVE ACCENT..COMBINING RIGHT ARROWHEAD AND DOWN ARROWHEAD BELOW
+200C          ; Extend # Cf       ZERO WIDTH NON-JOINER
+20D0..20DC    ; Extend # Mn  [13] COMBINING LEFT HARPOON ABOVE..COMBINING FOUR DOTS ABOVE
+20DD..20E0    ; Extend # Me   [4] COMBINING ENCLOSING CIRCLE..COMBINING ENCLOSING CIRCLE BACKSLASH
+20E1          ; Extend # Mn       COMBINING LEFT RIGHT ARROW ABOVE
+20E2..20E4    ; Extend # Me   [3] COMBINING ENCLOSING SCREEN..COMBINING ENCLOSING UPWARD POINTING TRIANGLE
+20E5..20F0    ; Extend # Mn  [12] COMBINING REVERSE SOLIDUS OVERLAY..COMBINING ASTERISK ABOVE
+2CEF..2CF1    ; Extend # Mn   [3] COPTIC COMBINING NI ABOVE..COPTIC COMBINING SPIRITUS LENIS
+2D7F          ; Extend # Mn       TIFINAGH CONSONANT JOINER
+2DE0..2DFF    ; Extend # Mn  [32] COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
+302A..302D    ; Extend # Mn   [4] IDEOGRAPHIC LEVEL TONE MARK..IDEOGRAPHIC ENTERING TONE MARK
+302E..302F    ; Extend # Mc   [2] HANGUL SINGLE DOT TONE MARK..HANGUL DOUBLE DOT TONE MARK
+3099..309A    ; Extend # Mn   [2] COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK..COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK
+A66F          ; Extend # Mn       COMBINING CYRILLIC VZMET
+A670..A672    ; Extend # Me   [3] COMBINING CYRILLIC TEN MILLIONS SIGN..COMBINING CYRILLIC THOUSAND MILLIONS SIGN
+A674..A67D    ; Extend # Mn  [10] COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBINING CYRILLIC PAYEROK
+A69E..A69F    ; Extend # Mn   [2] COMBINING CYRILLIC LETTER EF..COMBINING CYRILLIC LETTER IOTIFIED E
+A6F0..A6F1    ; Extend # Mn   [2] BAMUM COMBINING MARK KOQNDON..BAMUM COMBINING MARK TUKWENTIS
+A802          ; Extend # Mn       SYLOTI NAGRI SIGN DVISVARA
+A806          ; Extend # Mn       SYLOTI NAGRI SIGN HASANTA
+A80B          ; Extend # Mn       SYLOTI NAGRI SIGN ANUSVARA
+A825..A826    ; Extend # Mn   [2] SYLOTI NAGRI VOWEL SIGN U..SYLOTI NAGRI VOWEL SIGN E
+A82C          ; Extend # Mn       SYLOTI NAGRI SIGN ALTERNATE HASANTA
+A8C4..A8C5    ; Extend # Mn   [2] SAURASHTRA SIGN VIRAMA..SAURASHTRA SIGN CANDRABINDU
+A8E0..A8F1    ; Extend # Mn  [18] COMBINING DEVANAGARI DIGIT ZERO..COMBINING DEVANAGARI SIGN AVAGRAHA
+A8FF          ; Extend # Mn       DEVANAGARI VOWEL SIGN AY
+A926..A92D    ; Extend # Mn   [8] KAYAH LI VOWEL UE..KAYAH LI TONE CALYA PLOPHU
+A947..A951    ; Extend # Mn  [11] REJANG VOWEL SIGN I..REJANG CONSONANT SIGN R
+A980..A982    ; Extend # Mn   [3] JAVANESE SIGN PANYANGGA..JAVANESE SIGN LAYAR
+A9B3          ; Extend # Mn       JAVANESE SIGN CECAK TELU
+A9B6..A9B9    ; Extend # Mn   [4] JAVANESE VOWEL SIGN WULU..JAVANESE VOWEL SIGN SUKU MENDUT
+A9BC..A9BD    ; Extend # Mn   [2] JAVANESE VOWEL SIGN PEPET..JAVANESE CONSONANT SIGN KERET
+A9E5          ; Extend # Mn       MYANMAR SIGN SHAN SAW
+AA29..AA2E    ; Extend # Mn   [6] CHAM VOWEL SIGN AA..CHAM VOWEL SIGN OE
+AA31..AA32    ; Extend # Mn   [2] CHAM VOWEL SIGN AU..CHAM VOWEL SIGN UE
+AA35..AA36    ; Extend # Mn   [2] CHAM CONSONANT SIGN LA..CHAM CONSONANT SIGN WA
+AA43          ; Extend # Mn       CHAM CONSONANT SIGN FINAL NG
+AA4C          ; Extend # Mn       CHAM CONSONANT SIGN FINAL M
+AA7C          ; Extend # Mn       MYANMAR SIGN TAI LAING TONE-2
+AAB0          ; Extend # Mn       TAI VIET MAI KANG
+AAB2..AAB4    ; Extend # Mn   [3] TAI VIET VOWEL I..TAI VIET VOWEL U
+AAB7..AAB8    ; Extend # Mn   [2] TAI VIET MAI KHIT..TAI VIET VOWEL IA
+AABE..AABF    ; Extend # Mn   [2] TAI VIET VOWEL AM..TAI VIET TONE MAI EK
+AAC1          ; Extend # Mn       TAI VIET TONE MAI THO
+AAEC..AAED    ; Extend # Mn   [2] MEETEI MAYEK VOWEL SIGN UU..MEETEI MAYEK VOWEL SIGN AAI
+AAF6          ; Extend # Mn       MEETEI MAYEK VIRAMA
+ABE5          ; Extend # Mn       MEETEI MAYEK VOWEL SIGN ANAP
+ABE8          ; Extend # Mn       MEETEI MAYEK VOWEL SIGN UNAP
+ABED          ; Extend # Mn       MEETEI MAYEK APUN IYEK
+FB1E          ; Extend # Mn       HEBREW POINT JUDEO-SPANISH VARIKA
+FE00..FE0F    ; Extend # Mn  [16] VARIATION SELECTOR-1..VARIATION SELECTOR-16
+FE20..FE2F    ; Extend # Mn  [16] COMBINING LIGATURE LEFT HALF..COMBINING CYRILLIC TITLO RIGHT HALF
+FF9E..FF9F    ; Extend # Lm   [2] HALFWIDTH KATAKANA VOICED SOUND MARK..HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK
+101FD         ; Extend # Mn       PHAISTOS DISC SIGN COMBINING OBLIQUE STROKE
+102E0         ; Extend # Mn       COPTIC EPACT THOUSANDS MARK
+10376..1037A  ; Extend # Mn   [5] COMBINING OLD PERMIC LETTER AN..COMBINING OLD PERMIC LETTER SII
+10A01..10A03  ; Extend # Mn   [3] KHAROSHTHI VOWEL SIGN I..KHAROSHTHI VOWEL SIGN VOCALIC R
+10A05..10A06  ; Extend # Mn   [2] KHAROSHTHI VOWEL SIGN E..KHAROSHTHI VOWEL SIGN O
+10A0C..10A0F  ; Extend # Mn   [4] KHAROSHTHI VOWEL LENGTH MARK..KHAROSHTHI SIGN VISARGA
+10A38..10A3A  ; Extend # Mn   [3] KHAROSHTHI SIGN BAR ABOVE..KHAROSHTHI SIGN DOT BELOW
+10A3F         ; Extend # Mn       KHAROSHTHI VIRAMA
+10AE5..10AE6  ; Extend # Mn   [2] MANICHAEAN ABBREVIATION MARK ABOVE..MANICHAEAN ABBREVIATION MARK BELOW
+10D24..10D27  ; Extend # Mn   [4] HANIFI ROHINGYA SIGN HARBAHAY..HANIFI ROHINGYA SIGN TASSI
+10EAB..10EAC  ; Extend # Mn   [2] YEZIDI COMBINING HAMZA MARK..YEZIDI COMBINING MADDA MARK
+10EFD..10EFF  ; Extend # Mn   [3] ARABIC SMALL LOW WORD SAKTA..ARABIC SMALL LOW WORD MADDA
+10F46..10F50  ; Extend # Mn  [11] SOGDIAN COMBINING DOT BELOW..SOGDIAN COMBINING STROKE BELOW
+10F82..10F85  ; Extend # Mn   [4] OLD UYGHUR COMBINING DOT ABOVE..OLD UYGHUR COMBINING TWO DOTS BELOW
+11001         ; Extend # Mn       BRAHMI SIGN ANUSVARA
+11038..11046  ; Extend # Mn  [15] BRAHMI VOWEL SIGN AA..BRAHMI VIRAMA
+11070         ; Extend # Mn       BRAHMI SIGN OLD TAMIL VIRAMA
+11073..11074  ; Extend # Mn   [2] BRAHMI VOWEL SIGN OLD TAMIL SHORT E..BRAHMI VOWEL SIGN OLD TAMIL SHORT O
+1107F..11081  ; Extend # Mn   [3] BRAHMI NUMBER JOINER..KAITHI SIGN ANUSVARA
+110B3..110B6  ; Extend # Mn   [4] KAITHI VOWEL SIGN U..KAITHI VOWEL SIGN AI
+110B9..110BA  ; Extend # Mn   [2] KAITHI SIGN VIRAMA..KAITHI SIGN NUKTA
+110C2         ; Extend # Mn       KAITHI VOWEL SIGN VOCALIC R
+11100..11102  ; Extend # Mn   [3] CHAKMA SIGN CANDRABINDU..CHAKMA SIGN VISARGA
+11127..1112B  ; Extend # Mn   [5] CHAKMA VOWEL SIGN A..CHAKMA VOWEL SIGN UU
+1112D..11134  ; Extend # Mn   [8] CHAKMA VOWEL SIGN AI..CHAKMA MAAYYAA
+11173         ; Extend # Mn       MAHAJANI SIGN NUKTA
+11180..11181  ; Extend # Mn   [2] SHARADA SIGN CANDRABINDU..SHARADA SIGN ANUSVARA
+111B6..111BE  ; Extend # Mn   [9] SHARADA VOWEL SIGN U..SHARADA VOWEL SIGN O
+111C9..111CC  ; Extend # Mn   [4] SHARADA SANDHI MARK..SHARADA EXTRA SHORT VOWEL MARK
+111CF         ; Extend # Mn       SHARADA SIGN INVERTED CANDRABINDU
+1122F..11231  ; Extend # Mn   [3] KHOJKI VOWEL SIGN U..KHOJKI VOWEL SIGN AI
+11234         ; Extend # Mn       KHOJKI SIGN ANUSVARA
+11236..11237  ; Extend # Mn   [2] KHOJKI SIGN NUKTA..KHOJKI SIGN SHADDA
+1123E         ; Extend # Mn       KHOJKI SIGN SUKUN
+11241         ; Extend # Mn       KHOJKI VOWEL SIGN VOCALIC R
+112DF         ; Extend # Mn       KHUDAWADI SIGN ANUSVARA
+112E3..112EA  ; Extend # Mn   [8] KHUDAWADI VOWEL SIGN U..KHUDAWADI SIGN VIRAMA
+11300..11301  ; Extend # Mn   [2] GRANTHA SIGN COMBINING ANUSVARA ABOVE..GRANTHA SIGN CANDRABINDU
+1133B..1133C  ; Extend # Mn   [2] COMBINING BINDU BELOW..GRANTHA SIGN NUKTA
+1133E         ; Extend # Mc       GRANTHA VOWEL SIGN AA
+11340         ; Extend # Mn       GRANTHA VOWEL SIGN II
+11357         ; Extend # Mc       GRANTHA AU LENGTH MARK
+11366..1136C  ; Extend # Mn   [7] COMBINING GRANTHA DIGIT ZERO..COMBINING GRANTHA DIGIT SIX
+11370..11374  ; Extend # Mn   [5] COMBINING GRANTHA LETTER A..COMBINING GRANTHA LETTER PA
+11438..1143F  ; Extend # Mn   [8] NEWA VOWEL SIGN U..NEWA VOWEL SIGN AI
+11442..11444  ; Extend # Mn   [3] NEWA SIGN VIRAMA..NEWA SIGN ANUSVARA
+11446         ; Extend # Mn       NEWA SIGN NUKTA
+1145E         ; Extend # Mn       NEWA SANDHI MARK
+114B0         ; Extend # Mc       TIRHUTA VOWEL SIGN AA
+114B3..114B8  ; Extend # Mn   [6] TIRHUTA VOWEL SIGN U..TIRHUTA VOWEL SIGN VOCALIC LL
+114BA         ; Extend # Mn       TIRHUTA VOWEL SIGN SHORT E
+114BD         ; Extend # Mc       TIRHUTA VOWEL SIGN SHORT O
+114BF..114C0  ; Extend # Mn   [2] TIRHUTA SIGN CANDRABINDU..TIRHUTA SIGN ANUSVARA
+114C2..114C3  ; Extend # Mn   [2] TIRHUTA SIGN VIRAMA..TIRHUTA SIGN NUKTA
+115AF         ; Extend # Mc       SIDDHAM VOWEL SIGN AA
+115B2..115B5  ; Extend # Mn   [4] SIDDHAM VOWEL SIGN U..SIDDHAM VOWEL SIGN VOCALIC RR
+115BC..115BD  ; Extend # Mn   [2] SIDDHAM SIGN CANDRABINDU..SIDDHAM SIGN ANUSVARA
+115BF..115C0  ; Extend # Mn   [2] SIDDHAM SIGN VIRAMA..SIDDHAM SIGN NUKTA
+115DC..115DD  ; Extend # Mn   [2] SIDDHAM VOWEL SIGN ALTERNATE U..SIDDHAM VOWEL SIGN ALTERNATE UU
+11633..1163A  ; Extend # Mn   [8] MODI VOWEL SIGN U..MODI VOWEL SIGN AI
+1163D         ; Extend # Mn       MODI SIGN ANUSVARA
+1163F..11640  ; Extend # Mn   [2] MODI SIGN VIRAMA..MODI SIGN ARDHACANDRA
+116AB         ; Extend # Mn       TAKRI SIGN ANUSVARA
+116AD         ; Extend # Mn       TAKRI VOWEL SIGN AA
+116B0..116B5  ; Extend # Mn   [6] TAKRI VOWEL SIGN U..TAKRI VOWEL SIGN AU
+116B7         ; Extend # Mn       TAKRI SIGN NUKTA
+1171D..1171F  ; Extend # Mn   [3] AHOM CONSONANT SIGN MEDIAL LA..AHOM CONSONANT SIGN MEDIAL LIGATING RA
+11722..11725  ; Extend # Mn   [4] AHOM VOWEL SIGN I..AHOM VOWEL SIGN UU
+11727..1172B  ; Extend # Mn   [5] AHOM VOWEL SIGN AW..AHOM SIGN KILLER
+1182F..11837  ; Extend # Mn   [9] DOGRA VOWEL SIGN U..DOGRA SIGN ANUSVARA
+11839..1183A  ; Extend # Mn   [2] DOGRA SIGN VIRAMA..DOGRA SIGN NUKTA
+11930         ; Extend # Mc       DIVES AKURU VOWEL SIGN AA
+1193B..1193C  ; Extend # Mn   [2] DIVES AKURU SIGN ANUSVARA..DIVES AKURU SIGN CANDRABINDU
+1193E         ; Extend # Mn       DIVES AKURU VIRAMA
+11943         ; Extend # Mn       DIVES AKURU SIGN NUKTA
+119D4..119D7  ; Extend # Mn   [4] NANDINAGARI VOWEL SIGN U..NANDINAGARI VOWEL SIGN VOCALIC RR
+119DA..119DB  ; Extend # Mn   [2] NANDINAGARI VOWEL SIGN E..NANDINAGARI VOWEL SIGN AI
+119E0         ; Extend # Mn       NANDINAGARI SIGN VIRAMA
+11A01..11A0A  ; Extend # Mn  [10] ZANABAZAR SQUARE VOWEL SIGN I..ZANABAZAR SQUARE VOWEL LENGTH MARK
+11A33..11A38  ; Extend # Mn   [6] ZANABAZAR SQUARE FINAL CONSONANT MARK..ZANABAZAR SQUARE SIGN ANUSVARA
+11A3B..11A3E  ; Extend # Mn   [4] ZANABAZAR SQUARE CLUSTER-FINAL LETTER YA..ZANABAZAR SQUARE CLUSTER-FINAL LETTER VA
+11A47         ; Extend # Mn       ZANABAZAR SQUARE SUBJOINER
+11A51..11A56  ; Extend # Mn   [6] SOYOMBO VOWEL SIGN I..SOYOMBO VOWEL SIGN OE
+11A59..11A5B  ; Extend # Mn   [3] SOYOMBO VOWEL SIGN VOCALIC R..SOYOMBO VOWEL LENGTH MARK
+11A8A..11A96  ; Extend # Mn  [13] SOYOMBO FINAL CONSONANT SIGN G..SOYOMBO SIGN ANUSVARA
+11A98..11A99  ; Extend # Mn   [2] SOYOMBO GEMINATION MARK..SOYOMBO SUBJOINER
+11C30..11C36  ; Extend # Mn   [7] BHAIKSUKI VOWEL SIGN I..BHAIKSUKI VOWEL SIGN VOCALIC L
+11C38..11C3D  ; Extend # Mn   [6] BHAIKSUKI VOWEL SIGN E..BHAIKSUKI SIGN ANUSVARA
+11C3F         ; Extend # Mn       BHAIKSUKI SIGN VIRAMA
+11C92..11CA7  ; Extend # Mn  [22] MARCHEN SUBJOINED LETTER KA..MARCHEN SUBJOINED LETTER ZA
+11CAA..11CB0  ; Extend # Mn   [7] MARCHEN SUBJOINED LETTER RA..MARCHEN VOWEL SIGN AA
+11CB2..11CB3  ; Extend # Mn   [2] MARCHEN VOWEL SIGN U..MARCHEN VOWEL SIGN E
+11CB5..11CB6  ; Extend # Mn   [2] MARCHEN SIGN ANUSVARA..MARCHEN SIGN CANDRABINDU
+11D31..11D36  ; Extend # Mn   [6] MASARAM GONDI VOWEL SIGN AA..MASARAM GONDI VOWEL SIGN VOCALIC R
+11D3A         ; Extend # Mn       MASARAM GONDI VOWEL SIGN E
+11D3C..11D3D  ; Extend # Mn   [2] MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VOWEL SIGN O
+11D3F..11D45  ; Extend # Mn   [7] MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI VIRAMA
+11D47         ; Extend # Mn       MASARAM GONDI RA-KARA
+11D90..11D91  ; Extend # Mn   [2] GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VOWEL SIGN AI
+11D95         ; Extend # Mn       GUNJALA GONDI SIGN ANUSVARA
+11D97         ; Extend # Mn       GUNJALA GONDI VIRAMA
+11EF3..11EF4  ; Extend # Mn   [2] MAKASAR VOWEL SIGN I..MAKASAR VOWEL SIGN U
+11F00..11F01  ; Extend # Mn   [2] KAWI SIGN CANDRABINDU..KAWI SIGN ANUSVARA
+11F36..11F3A  ; Extend # Mn   [5] KAWI VOWEL SIGN I..KAWI VOWEL SIGN VOCALIC R
+11F40         ; Extend # Mn       KAWI VOWEL SIGN EU
+11F42         ; Extend # Mn       KAWI CONJOINER
+13440         ; Extend # Mn       EGYPTIAN HIEROGLYPH MIRROR HORIZONTALLY
+13447..13455  ; Extend # Mn  [15] EGYPTIAN HIEROGLYPH MODIFIER DAMAGED AT TOP START..EGYPTIAN HIEROGLYPH MODIFIER DAMAGED
+16AF0..16AF4  ; Extend # Mn   [5] BASSA VAH COMBINING HIGH TONE..BASSA VAH COMBINING HIGH-LOW TONE
+16B30..16B36  ; Extend # Mn   [7] PAHAWH HMONG MARK CIM TUB..PAHAWH HMONG MARK CIM TAUM
+16F4F         ; Extend # Mn       MIAO SIGN CONSONANT MODIFIER BAR
+16F8F..16F92  ; Extend # Mn   [4] MIAO TONE RIGHT..MIAO TONE BELOW
+16FE4         ; Extend # Mn       KHITAN SMALL SCRIPT FILLER
+1BC9D..1BC9E  ; Extend # Mn   [2] DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUBLE MARK
+1CF00..1CF2D  ; Extend # Mn  [46] ZNAMENNY COMBINING MARK GORAZDO NIZKO S KRYZHEM ON LEFT..ZNAMENNY COMBINING MARK KRYZH ON LEFT
+1CF30..1CF46  ; Extend # Mn  [23] ZNAMENNY COMBINING TONAL RANGE MARK MRACHNO..ZNAMENNY PRIZNAK MODIFIER ROG
+1D165         ; Extend # Mc       MUSICAL SYMBOL COMBINING STEM
+1D167..1D169  ; Extend # Mn   [3] MUSICAL SYMBOL COMBINING TREMOLO-1..MUSICAL SYMBOL COMBINING TREMOLO-3
+1D16E..1D172  ; Extend # Mc   [5] MUSICAL SYMBOL COMBINING FLAG-1..MUSICAL SYMBOL COMBINING FLAG-5
+1D17B..1D182  ; Extend # Mn   [8] MUSICAL SYMBOL COMBINING ACCENT..MUSICAL SYMBOL COMBINING LOURE
+1D185..1D18B  ; Extend # Mn   [7] MUSICAL SYMBOL COMBINING DOIT..MUSICAL SYMBOL COMBINING TRIPLE TONGUE
+1D1AA..1D1AD  ; Extend # Mn   [4] MUSICAL SYMBOL COMBINING DOWN BOW..MUSICAL SYMBOL COMBINING SNAP PIZZICATO
+1D242..1D244  ; Extend # Mn   [3] COMBINING GREEK MUSICAL TRISEME..COMBINING GREEK MUSICAL PENTASEME
+1DA00..1DA36  ; Extend # Mn  [55] SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING IN
+1DA3B..1DA6C  ; Extend # Mn  [50] SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING EXCITEMENT
+1DA75         ; Extend # Mn       SIGNWRITING UPPER BODY TILTING FROM HIP JOINTS
+1DA84         ; Extend # Mn       SIGNWRITING LOCATION HEAD NECK
+1DA9B..1DA9F  ; Extend # Mn   [5] SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL MODIFIER-6
+1DAA1..1DAAF  ; Extend # Mn  [15] SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING ROTATION MODIFIER-16
+1E000..1E006  ; Extend # Mn   [7] COMBINING GLAGOLITIC LETTER AZU..COMBINING GLAGOLITIC LETTER ZHIVETE
+1E008..1E018  ; Extend # Mn  [17] COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING GLAGOLITIC LETTER HERU
+1E01B..1E021  ; Extend # Mn   [7] COMBINING GLAGOLITIC LETTER SHTA..COMBINING GLAGOLITIC LETTER YATI
+1E023..1E024  ; Extend # Mn   [2] COMBINING GLAGOLITIC LETTER YU..COMBINING GLAGOLITIC LETTER SMALL YUS
+1E026..1E02A  ; Extend # Mn   [5] COMBINING GLAGOLITIC LETTER YO..COMBINING GLAGOLITIC LETTER FITA
+1E08F         ; Extend # Mn       COMBINING CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I
+1E130..1E136  ; Extend # Mn   [7] NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACHUE HMONG TONE-D
+1E2AE         ; Extend # Mn       TOTO SIGN RISING TONE
+1E2EC..1E2EF  ; Extend # Mn   [4] WANCHO TONE TUP..WANCHO TONE KOINI
+1E4EC..1E4EF  ; Extend # Mn   [4] NAG MUNDARI SIGN MUHOR..NAG MUNDARI SIGN SUTUH
+1E8D0..1E8D6  ; Extend # Mn   [7] MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE KIKAKUI COMBINING NUMBER MILLIONS
+1E944..1E94A  ; Extend # Mn   [7] ADLAM ALIF LENGTHENER..ADLAM NUKTA
+1F3FB..1F3FF  ; Extend # Sk   [5] EMOJI MODIFIER FITZPATRICK TYPE-1-2..EMOJI MODIFIER FITZPATRICK TYPE-6
+E0020..E007F  ; Extend # Cf  [96] TAG SPACE..CANCEL TAG
+E0100..E01EF  ; Extend # Mn [240] VARIATION SELECTOR-17..VARIATION SELECTOR-256
+
+# Total code points: 2130
+
+# ================================================
+
+1F1E6..1F1FF  ; Regional_Indicator # So  [26] REGIONAL INDICATOR SYMBOL LETTER A..REGIONAL INDICATOR SYMBOL LETTER Z
+
+# Total code points: 26
+
+# ================================================
+
+0903          ; SpacingMark # Mc       DEVANAGARI SIGN VISARGA
+093B          ; SpacingMark # Mc       DEVANAGARI VOWEL SIGN OOE
+093E..0940    ; SpacingMark # Mc   [3] DEVANAGARI VOWEL SIGN AA..DEVANAGARI VOWEL SIGN II
+0949..094C    ; SpacingMark # Mc   [4] DEVANAGARI VOWEL SIGN CANDRA O..DEVANAGARI VOWEL SIGN AU
+094E..094F    ; SpacingMark # Mc   [2] DEVANAGARI VOWEL SIGN PRISHTHAMATRA E..DEVANAGARI VOWEL SIGN AW
+0982..0983    ; SpacingMark # Mc   [2] BENGALI SIGN ANUSVARA..BENGALI SIGN VISARGA
+09BF..09C0    ; SpacingMark # Mc   [2] BENGALI VOWEL SIGN I..BENGALI VOWEL SIGN II
+09C7..09C8    ; SpacingMark # Mc   [2] BENGALI VOWEL SIGN E..BENGALI VOWEL SIGN AI
+09CB..09CC    ; SpacingMark # Mc   [2] BENGALI VOWEL SIGN O..BENGALI VOWEL SIGN AU
+0A03          ; SpacingMark # Mc       GURMUKHI SIGN VISARGA
+0A3E..0A40    ; SpacingMark # Mc   [3] GURMUKHI VOWEL SIGN AA..GURMUKHI VOWEL SIGN II
+0A83          ; SpacingMark # Mc       GUJARATI SIGN VISARGA
+0ABE..0AC0    ; SpacingMark # Mc   [3] GUJARATI VOWEL SIGN AA..GUJARATI VOWEL SIGN II
+0AC9          ; SpacingMark # Mc       GUJARATI VOWEL SIGN CANDRA O
+0ACB..0ACC    ; SpacingMark # Mc   [2] GUJARATI VOWEL SIGN O..GUJARATI VOWEL SIGN AU
+0B02..0B03    ; SpacingMark # Mc   [2] ORIYA SIGN ANUSVARA..ORIYA SIGN VISARGA
+0B40          ; SpacingMark # Mc       ORIYA VOWEL SIGN II
+0B47..0B48    ; SpacingMark # Mc   [2] ORIYA VOWEL SIGN E..ORIYA VOWEL SIGN AI
+0B4B..0B4C    ; SpacingMark # Mc   [2] ORIYA VOWEL SIGN O..ORIYA VOWEL SIGN AU
+0BBF          ; SpacingMark # Mc       TAMIL VOWEL SIGN I
+0BC1..0BC2    ; SpacingMark # Mc   [2] TAMIL VOWEL SIGN U..TAMIL VOWEL SIGN UU
+0BC6..0BC8    ; SpacingMark # Mc   [3] TAMIL VOWEL SIGN E..TAMIL VOWEL SIGN AI
+0BCA..0BCC    ; SpacingMark # Mc   [3] TAMIL VOWEL SIGN O..TAMIL VOWEL SIGN AU
+0C01..0C03    ; SpacingMark # Mc   [3] TELUGU SIGN CANDRABINDU..TELUGU SIGN VISARGA
+0C41..0C44    ; SpacingMark # Mc   [4] TELUGU VOWEL SIGN U..TELUGU VOWEL SIGN VOCALIC RR
+0C82..0C83    ; SpacingMark # Mc   [2] KANNADA SIGN ANUSVARA..KANNADA SIGN VISARGA
+0CBE          ; SpacingMark # Mc       KANNADA VOWEL SIGN AA
+0CC0..0CC1    ; SpacingMark # Mc   [2] KANNADA VOWEL SIGN II..KANNADA VOWEL SIGN U
+0CC3..0CC4    ; SpacingMark # Mc   [2] KANNADA VOWEL SIGN VOCALIC R..KANNADA VOWEL SIGN VOCALIC RR
+0CC7..0CC8    ; SpacingMark # Mc   [2] KANNADA VOWEL SIGN EE..KANNADA VOWEL SIGN AI
+0CCA..0CCB    ; SpacingMark # Mc   [2] KANNADA VOWEL SIGN O..KANNADA VOWEL SIGN OO
+0CF3          ; SpacingMark # Mc       KANNADA SIGN COMBINING ANUSVARA ABOVE RIGHT
+0D02..0D03    ; SpacingMark # Mc   [2] MALAYALAM SIGN ANUSVARA..MALAYALAM SIGN VISARGA
+0D3F..0D40    ; SpacingMark # Mc   [2] MALAYALAM VOWEL SIGN I..MALAYALAM VOWEL SIGN II
+0D46..0D48    ; SpacingMark # Mc   [3] MALAYALAM VOWEL SIGN E..MALAYALAM VOWEL SIGN AI
+0D4A..0D4C    ; SpacingMark # Mc   [3] MALAYALAM VOWEL SIGN O..MALAYALAM VOWEL SIGN AU
+0D82..0D83    ; SpacingMark # Mc   [2] SINHALA SIGN ANUSVARAYA..SINHALA SIGN VISARGAYA
+0DD0..0DD1    ; SpacingMark # Mc   [2] SINHALA VOWEL SIGN KETTI AEDA-PILLA..SINHALA VOWEL SIGN DIGA AEDA-PILLA
+0DD8..0DDE    ; SpacingMark # Mc   [7] SINHALA VOWEL SIGN GAETTA-PILLA..SINHALA VOWEL SIGN KOMBUVA HAA GAYANUKITTA
+0DF2..0DF3    ; SpacingMark # Mc   [2] SINHALA VOWEL SIGN DIGA GAETTA-PILLA..SINHALA VOWEL SIGN DIGA GAYANUKITTA
+0E33          ; SpacingMark # Lo       THAI CHARACTER SARA AM
+0EB3          ; SpacingMark # Lo       LAO VOWEL SIGN AM
+0F3E..0F3F    ; SpacingMark # Mc   [2] TIBETAN SIGN YAR TSHES..TIBETAN SIGN MAR TSHES
+0F7F          ; SpacingMark # Mc       TIBETAN SIGN RNAM BCAD
+1031          ; SpacingMark # Mc       MYANMAR VOWEL SIGN E
+103B..103C    ; SpacingMark # Mc   [2] MYANMAR CONSONANT SIGN MEDIAL YA..MYANMAR CONSONANT SIGN MEDIAL RA
+1056..1057    ; SpacingMark # Mc   [2] MYANMAR VOWEL SIGN VOCALIC R..MYANMAR VOWEL SIGN VOCALIC RR
+1084          ; SpacingMark # Mc       MYANMAR VOWEL SIGN SHAN E
+1715          ; SpacingMark # Mc       TAGALOG SIGN PAMUDPOD
+1734          ; SpacingMark # Mc       HANUNOO SIGN PAMUDPOD
+17B6          ; SpacingMark # Mc       KHMER VOWEL SIGN AA
+17BE..17C5    ; SpacingMark # Mc   [8] KHMER VOWEL SIGN OE..KHMER VOWEL SIGN AU
+17C7..17C8    ; SpacingMark # Mc   [2] KHMER SIGN REAHMUK..KHMER SIGN YUUKALEAPINTU
+1923..1926    ; SpacingMark # Mc   [4] LIMBU VOWEL SIGN EE..LIMBU VOWEL SIGN AU
+1929..192B    ; SpacingMark # Mc   [3] LIMBU SUBJOINED LETTER YA..LIMBU SUBJOINED LETTER WA
+1930..1931    ; SpacingMark # Mc   [2] LIMBU SMALL LETTER KA..LIMBU SMALL LETTER NGA
+1933..1938    ; SpacingMark # Mc   [6] LIMBU SMALL LETTER TA..LIMBU SMALL LETTER LA
+1A19..1A1A    ; SpacingMark # Mc   [2] BUGINESE VOWEL SIGN E..BUGINESE VOWEL SIGN O
+1A55          ; SpacingMark # Mc       TAI THAM CONSONANT SIGN MEDIAL RA
+1A57          ; SpacingMark # Mc       TAI THAM CONSONANT SIGN LA TANG LAI
+1A6D..1A72    ; SpacingMark # Mc   [6] TAI THAM VOWEL SIGN OY..TAI THAM VOWEL SIGN THAM AI
+1B04          ; SpacingMark # Mc       BALINESE SIGN BISAH
+1B3B          ; SpacingMark # Mc       BALINESE VOWEL SIGN RA REPA TEDUNG
+1B3D..1B41    ; SpacingMark # Mc   [5] BALINESE VOWEL SIGN LA LENGA TEDUNG..BALINESE VOWEL SIGN TALING REPA TEDUNG
+1B43..1B44    ; SpacingMark # Mc   [2] BALINESE VOWEL SIGN PEPET TEDUNG..BALINESE ADEG ADEG
+1B82          ; SpacingMark # Mc       SUNDANESE SIGN PANGWISAD
+1BA1          ; SpacingMark # Mc       SUNDANESE CONSONANT SIGN PAMINGKAL
+1BA6..1BA7    ; SpacingMark # Mc   [2] SUNDANESE VOWEL SIGN PANAELAENG..SUNDANESE VOWEL SIGN PANOLONG
+1BAA          ; SpacingMark # Mc       SUNDANESE SIGN PAMAAEH
+1BE7          ; SpacingMark # Mc       BATAK VOWEL SIGN E
+1BEA..1BEC    ; SpacingMark # Mc   [3] BATAK VOWEL SIGN I..BATAK VOWEL SIGN O
+1BEE          ; SpacingMark # Mc       BATAK VOWEL SIGN U
+1BF2..1BF3    ; SpacingMark # Mc   [2] BATAK PANGOLAT..BATAK PANONGONAN
+1C24..1C2B    ; SpacingMark # Mc   [8] LEPCHA SUBJOINED LETTER YA..LEPCHA VOWEL SIGN UU
+1C34..1C35    ; SpacingMark # Mc   [2] LEPCHA CONSONANT SIGN NYIN-DO..LEPCHA CONSONANT SIGN KANG
+1CE1          ; SpacingMark # Mc       VEDIC TONE ATHARVAVEDIC INDEPENDENT SVARITA
+1CF7          ; SpacingMark # Mc       VEDIC SIGN ATIKRAMA
+A823..A824    ; SpacingMark # Mc   [2] SYLOTI NAGRI VOWEL SIGN A..SYLOTI NAGRI VOWEL SIGN I
+A827          ; SpacingMark # Mc       SYLOTI NAGRI VOWEL SIGN OO
+A880..A881    ; SpacingMark # Mc   [2] SAURASHTRA SIGN ANUSVARA..SAURASHTRA SIGN VISARGA
+A8B4..A8C3    ; SpacingMark # Mc  [16] SAURASHTRA CONSONANT SIGN HAARU..SAURASHTRA VOWEL SIGN AU
+A952..A953    ; SpacingMark # Mc   [2] REJANG CONSONANT SIGN H..REJANG VIRAMA
+A983          ; SpacingMark # Mc       JAVANESE SIGN WIGNYAN
+A9B4..A9B5    ; SpacingMark # Mc   [2] JAVANESE VOWEL SIGN TARUNG..JAVANESE VOWEL SIGN TOLONG
+A9BA..A9BB    ; SpacingMark # Mc   [2] JAVANESE VOWEL SIGN TALING..JAVANESE VOWEL SIGN DIRGA MURE
+A9BE..A9C0    ; SpacingMark # Mc   [3] JAVANESE CONSONANT SIGN PENGKAL..JAVANESE PANGKON
+AA2F..AA30    ; SpacingMark # Mc   [2] CHAM VOWEL SIGN O..CHAM VOWEL SIGN AI
+AA33..AA34    ; SpacingMark # Mc   [2] CHAM CONSONANT SIGN YA..CHAM CONSONANT SIGN RA
+AA4D          ; SpacingMark # Mc       CHAM CONSONANT SIGN FINAL H
+AAEB          ; SpacingMark # Mc       MEETEI MAYEK VOWEL SIGN II
+AAEE..AAEF    ; SpacingMark # Mc   [2] MEETEI MAYEK VOWEL SIGN AU..MEETEI MAYEK VOWEL SIGN AAU
+AAF5          ; SpacingMark # Mc       MEETEI MAYEK VOWEL SIGN VISARGA
+ABE3..ABE4    ; SpacingMark # Mc   [2] MEETEI MAYEK VOWEL SIGN ONAP..MEETEI MAYEK VOWEL SIGN INAP
+ABE6..ABE7    ; SpacingMark # Mc   [2] MEETEI MAYEK VOWEL SIGN YENAP..MEETEI MAYEK VOWEL SIGN SOUNAP
+ABE9..ABEA    ; SpacingMark # Mc   [2] MEETEI MAYEK VOWEL SIGN CHEINAP..MEETEI MAYEK VOWEL SIGN NUNG
+ABEC          ; SpacingMark # Mc       MEETEI MAYEK LUM IYEK
+11000         ; SpacingMark # Mc       BRAHMI SIGN CANDRABINDU
+11002         ; SpacingMark # Mc       BRAHMI SIGN VISARGA
+11082         ; SpacingMark # Mc       KAITHI SIGN VISARGA
+110B0..110B2  ; SpacingMark # Mc   [3] KAITHI VOWEL SIGN AA..KAITHI VOWEL SIGN II
+110B7..110B8  ; SpacingMark # Mc   [2] KAITHI VOWEL SIGN O..KAITHI VOWEL SIGN AU
+1112C         ; SpacingMark # Mc       CHAKMA VOWEL SIGN E
+11145..11146  ; SpacingMark # Mc   [2] CHAKMA VOWEL SIGN AA..CHAKMA VOWEL SIGN EI
+11182         ; SpacingMark # Mc       SHARADA SIGN VISARGA
+111B3..111B5  ; SpacingMark # Mc   [3] SHARADA VOWEL SIGN AA..SHARADA VOWEL SIGN II
+111BF..111C0  ; SpacingMark # Mc   [2] SHARADA VOWEL SIGN AU..SHARADA SIGN VIRAMA
+111CE         ; SpacingMark # Mc       SHARADA VOWEL SIGN PRISHTHAMATRA E
+1122C..1122E  ; SpacingMark # Mc   [3] KHOJKI VOWEL SIGN AA..KHOJKI VOWEL SIGN II
+11232..11233  ; SpacingMark # Mc   [2] KHOJKI VOWEL SIGN O..KHOJKI VOWEL SIGN AU
+11235         ; SpacingMark # Mc       KHOJKI SIGN VIRAMA
+112E0..112E2  ; SpacingMark # Mc   [3] KHUDAWADI VOWEL SIGN AA..KHUDAWADI VOWEL SIGN II
+11302..11303  ; SpacingMark # Mc   [2] GRANTHA SIGN ANUSVARA..GRANTHA SIGN VISARGA
+1133F         ; SpacingMark # Mc       GRANTHA VOWEL SIGN I
+11341..11344  ; SpacingMark # Mc   [4] GRANTHA VOWEL SIGN U..GRANTHA VOWEL SIGN VOCALIC RR
+11347..11348  ; SpacingMark # Mc   [2] GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI
+1134B..1134D  ; SpacingMark # Mc   [3] GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA
+11362..11363  ; SpacingMark # Mc   [2] GRANTHA VOWEL SIGN VOCALIC L..GRANTHA VOWEL SIGN VOCALIC LL
+11435..11437  ; SpacingMark # Mc   [3] NEWA VOWEL SIGN AA..NEWA VOWEL SIGN II
+11440..11441  ; SpacingMark # Mc   [2] NEWA VOWEL SIGN O..NEWA VOWEL SIGN AU
+11445         ; SpacingMark # Mc       NEWA SIGN VISARGA
+114B1..114B2  ; SpacingMark # Mc   [2] TIRHUTA VOWEL SIGN I..TIRHUTA VOWEL SIGN II
+114B9         ; SpacingMark # Mc       TIRHUTA VOWEL SIGN E
+114BB..114BC  ; SpacingMark # Mc   [2] TIRHUTA VOWEL SIGN AI..TIRHUTA VOWEL SIGN O
+114BE         ; SpacingMark # Mc       TIRHUTA VOWEL SIGN AU
+114C1         ; SpacingMark # Mc       TIRHUTA SIGN VISARGA
+115B0..115B1  ; SpacingMark # Mc   [2] SIDDHAM VOWEL SIGN I..SIDDHAM VOWEL SIGN II
+115B8..115BB  ; SpacingMark # Mc   [4] SIDDHAM VOWEL SIGN E..SIDDHAM VOWEL SIGN AU
+115BE         ; SpacingMark # Mc       SIDDHAM SIGN VISARGA
+11630..11632  ; SpacingMark # Mc   [3] MODI VOWEL SIGN AA..MODI VOWEL SIGN II
+1163B..1163C  ; SpacingMark # Mc   [2] MODI VOWEL SIGN O..MODI VOWEL SIGN AU
+1163E         ; SpacingMark # Mc       MODI SIGN VISARGA
+116AC         ; SpacingMark # Mc       TAKRI SIGN VISARGA
+116AE..116AF  ; SpacingMark # Mc   [2] TAKRI VOWEL SIGN I..TAKRI VOWEL SIGN II
+116B6         ; SpacingMark # Mc       TAKRI SIGN VIRAMA
+11726         ; SpacingMark # Mc       AHOM VOWEL SIGN E
+1182C..1182E  ; SpacingMark # Mc   [3] DOGRA VOWEL SIGN AA..DOGRA VOWEL SIGN II
+11838         ; SpacingMark # Mc       DOGRA SIGN VISARGA
+11931..11935  ; SpacingMark # Mc   [5] DIVES AKURU VOWEL SIGN I..DIVES AKURU VOWEL SIGN E
+11937..11938  ; SpacingMark # Mc   [2] DIVES AKURU VOWEL SIGN AI..DIVES AKURU VOWEL SIGN O
+1193D         ; SpacingMark # Mc       DIVES AKURU SIGN HALANTA
+11940         ; SpacingMark # Mc       DIVES AKURU MEDIAL YA
+11942         ; SpacingMark # Mc       DIVES AKURU MEDIAL RA
+119D1..119D3  ; SpacingMark # Mc   [3] NANDINAGARI VOWEL SIGN AA..NANDINAGARI VOWEL SIGN II
+119DC..119DF  ; SpacingMark # Mc   [4] NANDINAGARI VOWEL SIGN O..NANDINAGARI SIGN VISARGA
+119E4         ; SpacingMark # Mc       NANDINAGARI VOWEL SIGN PRISHTHAMATRA E
+11A39         ; SpacingMark # Mc       ZANABAZAR SQUARE SIGN VISARGA
+11A57..11A58  ; SpacingMark # Mc   [2] SOYOMBO VOWEL SIGN AI..SOYOMBO VOWEL SIGN AU
+11A97         ; SpacingMark # Mc       SOYOMBO SIGN VISARGA
+11C2F         ; SpacingMark # Mc       BHAIKSUKI VOWEL SIGN AA
+11C3E         ; SpacingMark # Mc       BHAIKSUKI SIGN VISARGA
+11CA9         ; SpacingMark # Mc       MARCHEN SUBJOINED LETTER YA
+11CB1         ; SpacingMark # Mc       MARCHEN VOWEL SIGN I
+11CB4         ; SpacingMark # Mc       MARCHEN VOWEL SIGN O
+11D8A..11D8E  ; SpacingMark # Mc   [5] GUNJALA GONDI VOWEL SIGN AA..GUNJALA GONDI VOWEL SIGN UU
+11D93..11D94  ; SpacingMark # Mc   [2] GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI VOWEL SIGN AU
+11D96         ; SpacingMark # Mc       GUNJALA GONDI SIGN VISARGA
+11EF5..11EF6  ; SpacingMark # Mc   [2] MAKASAR VOWEL SIGN E..MAKASAR VOWEL SIGN O
+11F03         ; SpacingMark # Mc       KAWI SIGN VISARGA
+11F34..11F35  ; SpacingMark # Mc   [2] KAWI VOWEL SIGN AA..KAWI VOWEL SIGN ALTERNATE AA
+11F3E..11F3F  ; SpacingMark # Mc   [2] KAWI VOWEL SIGN E..KAWI VOWEL SIGN AI
+11F41         ; SpacingMark # Mc       KAWI SIGN KILLER
+16F51..16F87  ; SpacingMark # Mc  [55] MIAO SIGN ASPIRATION..MIAO VOWEL SIGN UI
+16FF0..16FF1  ; SpacingMark # Mc   [2] VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
+1D166         ; SpacingMark # Mc       MUSICAL SYMBOL COMBINING SPRECHGESANG STEM
+1D16D         ; SpacingMark # Mc       MUSICAL SYMBOL COMBINING AUGMENTATION DOT
+
+# Total code points: 395
+
+# ================================================
+
+1100..115F    ; L # Lo  [96] HANGUL CHOSEONG KIYEOK..HANGUL CHOSEONG FILLER
+A960..A97C    ; L # Lo  [29] HANGUL CHOSEONG TIKEUT-MIEUM..HANGUL CHOSEONG SSANGYEORINHIEUH
+
+# Total code points: 125
+
+# ================================================
+
+1160..11A7    ; V # Lo  [72] HANGUL JUNGSEONG FILLER..HANGUL JUNGSEONG O-YAE
+D7B0..D7C6    ; V # Lo  [23] HANGUL JUNGSEONG O-YEO..HANGUL JUNGSEONG ARAEA-E
+
+# Total code points: 95
+
+# ================================================
+
+11A8..11FF    ; T # Lo  [88] HANGUL JONGSEONG KIYEOK..HANGUL JONGSEONG SSANGNIEUN
+D7CB..D7FB    ; T # Lo  [49] HANGUL JONGSEONG NIEUN-RIEUL..HANGUL JONGSEONG PHIEUPH-THIEUTH
+
+# Total code points: 137
+
+# ================================================
+
+AC00          ; LV # Lo       HANGUL SYLLABLE GA
+AC1C          ; LV # Lo       HANGUL SYLLABLE GAE
+AC38          ; LV # Lo       HANGUL SYLLABLE GYA
+AC54          ; LV # Lo       HANGUL SYLLABLE GYAE
+AC70          ; LV # Lo       HANGUL SYLLABLE GEO
+AC8C          ; LV # Lo       HANGUL SYLLABLE GE
+ACA8          ; LV # Lo       HANGUL SYLLABLE GYEO
+ACC4          ; LV # Lo       HANGUL SYLLABLE GYE
+ACE0          ; LV # Lo       HANGUL SYLLABLE GO
+ACFC          ; LV # Lo       HANGUL SYLLABLE GWA
+AD18          ; LV # Lo       HANGUL SYLLABLE GWAE
+AD34          ; LV # Lo       HANGUL SYLLABLE GOE
+AD50          ; LV # Lo       HANGUL SYLLABLE GYO
+AD6C          ; LV # Lo       HANGUL SYLLABLE GU
+AD88          ; LV # Lo       HANGUL SYLLABLE GWEO
+ADA4          ; LV # Lo       HANGUL SYLLABLE GWE
+ADC0          ; LV # Lo       HANGUL SYLLABLE GWI
+ADDC          ; LV # Lo       HANGUL SYLLABLE GYU
+ADF8          ; LV # Lo       HANGUL SYLLABLE GEU
+AE14          ; LV # Lo       HANGUL SYLLABLE GYI
+AE30          ; LV # Lo       HANGUL SYLLABLE GI
+AE4C          ; LV # Lo       HANGUL SYLLABLE GGA
+AE68          ; LV # Lo       HANGUL SYLLABLE GGAE
+AE84          ; LV # Lo       HANGUL SYLLABLE GGYA
+AEA0          ; LV # Lo       HANGUL SYLLABLE GGYAE
+AEBC          ; LV # Lo       HANGUL SYLLABLE GGEO
+AED8          ; LV # Lo       HANGUL SYLLABLE GGE
+AEF4          ; LV # Lo       HANGUL SYLLABLE GGYEO
+AF10          ; LV # Lo       HANGUL SYLLABLE GGYE
+AF2C          ; LV # Lo       HANGUL SYLLABLE GGO
+AF48          ; LV # Lo       HANGUL SYLLABLE GGWA
+AF64          ; LV # Lo       HANGUL SYLLABLE GGWAE
+AF80          ; LV # Lo       HANGUL SYLLABLE GGOE
+AF9C          ; LV # Lo       HANGUL SYLLABLE GGYO
+AFB8          ; LV # Lo       HANGUL SYLLABLE GGU
+AFD4          ; LV # Lo       HANGUL SYLLABLE GGWEO
+AFF0          ; LV # Lo       HANGUL SYLLABLE GGWE
+B00C          ; LV # Lo       HANGUL SYLLABLE GGWI
+B028          ; LV # Lo       HANGUL SYLLABLE GGYU
+B044          ; LV # Lo       HANGUL SYLLABLE GGEU
+B060          ; LV # Lo       HANGUL SYLLABLE GGYI
+B07C          ; LV # Lo       HANGUL SYLLABLE GGI
+B098          ; LV # Lo       HANGUL SYLLABLE NA
+B0B4          ; LV # Lo       HANGUL SYLLABLE NAE
+B0D0          ; LV # Lo       HANGUL SYLLABLE NYA
+B0EC          ; LV # Lo       HANGUL SYLLABLE NYAE
+B108          ; LV # Lo       HANGUL SYLLABLE NEO
+B124          ; LV # Lo       HANGUL SYLLABLE NE
+B140          ; LV # Lo       HANGUL SYLLABLE NYEO
+B15C          ; LV # Lo       HANGUL SYLLABLE NYE
+B178          ; LV # Lo       HANGUL SYLLABLE NO
+B194          ; LV # Lo       HANGUL SYLLABLE NWA
+B1B0          ; LV # Lo       HANGUL SYLLABLE NWAE
+B1CC          ; LV # Lo       HANGUL SYLLABLE NOE
+B1E8          ; LV # Lo       HANGUL SYLLABLE NYO
+B204          ; LV # Lo       HANGUL SYLLABLE NU
+B220          ; LV # Lo       HANGUL SYLLABLE NWEO
+B23C          ; LV # Lo       HANGUL SYLLABLE NWE
+B258          ; LV # Lo       HANGUL SYLLABLE NWI
+B274          ; LV # Lo       HANGUL SYLLABLE NYU
+B290          ; LV # Lo       HANGUL SYLLABLE NEU
+B2AC          ; LV # Lo       HANGUL SYLLABLE NYI
+B2C8          ; LV # Lo       HANGUL SYLLABLE NI
+B2E4          ; LV # Lo       HANGUL SYLLABLE DA
+B300          ; LV # Lo       HANGUL SYLLABLE DAE
+B31C          ; LV # Lo       HANGUL SYLLABLE DYA
+B338          ; LV # Lo       HANGUL SYLLABLE DYAE
+B354          ; LV # Lo       HANGUL SYLLABLE DEO
+B370          ; LV # Lo       HANGUL SYLLABLE DE
+B38C          ; LV # Lo       HANGUL SYLLABLE DYEO
+B3A8          ; LV # Lo       HANGUL SYLLABLE DYE
+B3C4          ; LV # Lo       HANGUL SYLLABLE DO
+B3E0          ; LV # Lo       HANGUL SYLLABLE DWA
+B3FC          ; LV # Lo       HANGUL SYLLABLE DWAE
+B418          ; LV # Lo       HANGUL SYLLABLE DOE
+B434          ; LV # Lo       HANGUL SYLLABLE DYO
+B450          ; LV # Lo       HANGUL SYLLABLE DU
+B46C          ; LV # Lo       HANGUL SYLLABLE DWEO
+B488          ; LV # Lo       HANGUL SYLLABLE DWE
+B4A4          ; LV # Lo       HANGUL SYLLABLE DWI
+B4C0          ; LV # Lo       HANGUL SYLLABLE DYU
+B4DC          ; LV # Lo       HANGUL SYLLABLE DEU
+B4F8          ; LV # Lo       HANGUL SYLLABLE DYI
+B514          ; LV # Lo       HANGUL SYLLABLE DI
+B530          ; LV # Lo       HANGUL SYLLABLE DDA
+B54C          ; LV # Lo       HANGUL SYLLABLE DDAE
+B568          ; LV # Lo       HANGUL SYLLABLE DDYA
+B584          ; LV # Lo       HANGUL SYLLABLE DDYAE
+B5A0          ; LV # Lo       HANGUL SYLLABLE DDEO
+B5BC          ; LV # Lo       HANGUL SYLLABLE DDE
+B5D8          ; LV # Lo       HANGUL SYLLABLE DDYEO
+B5F4          ; LV # Lo       HANGUL SYLLABLE DDYE
+B610          ; LV # Lo       HANGUL SYLLABLE DDO
+B62C          ; LV # Lo       HANGUL SYLLABLE DDWA
+B648          ; LV # Lo       HANGUL SYLLABLE DDWAE
+B664          ; LV # Lo       HANGUL SYLLABLE DDOE
+B680          ; LV # Lo       HANGUL SYLLABLE DDYO
+B69C          ; LV # Lo       HANGUL SYLLABLE DDU
+B6B8          ; LV # Lo       HANGUL SYLLABLE DDWEO
+B6D4          ; LV # Lo       HANGUL SYLLABLE DDWE
+B6F0          ; LV # Lo       HANGUL SYLLABLE DDWI
+B70C          ; LV # Lo       HANGUL SYLLABLE DDYU
+B728          ; LV # Lo       HANGUL SYLLABLE DDEU
+B744          ; LV # Lo       HANGUL SYLLABLE DDYI
+B760          ; LV # Lo       HANGUL SYLLABLE DDI
+B77C          ; LV # Lo       HANGUL SYLLABLE RA
+B798          ; LV # Lo       HANGUL SYLLABLE RAE
+B7B4          ; LV # Lo       HANGUL SYLLABLE RYA
+B7D0          ; LV # Lo       HANGUL SYLLABLE RYAE
+B7EC          ; LV # Lo       HANGUL SYLLABLE REO
+B808          ; LV # Lo       HANGUL SYLLABLE RE
+B824          ; LV # Lo       HANGUL SYLLABLE RYEO
+B840          ; LV # Lo       HANGUL SYLLABLE RYE
+B85C          ; LV # Lo       HANGUL SYLLABLE RO
+B878          ; LV # Lo       HANGUL SYLLABLE RWA
+B894          ; LV # Lo       HANGUL SYLLABLE RWAE
+B8B0          ; LV # Lo       HANGUL SYLLABLE ROE
+B8CC          ; LV # Lo       HANGUL SYLLABLE RYO
+B8E8          ; LV # Lo       HANGUL SYLLABLE RU
+B904          ; LV # Lo       HANGUL SYLLABLE RWEO
+B920          ; LV # Lo       HANGUL SYLLABLE RWE
+B93C          ; LV # Lo       HANGUL SYLLABLE RWI
+B958          ; LV # Lo       HANGUL SYLLABLE RYU
+B974          ; LV # Lo       HANGUL SYLLABLE REU
+B990          ; LV # Lo       HANGUL SYLLABLE RYI
+B9AC          ; LV # Lo       HANGUL SYLLABLE RI
+B9C8          ; LV # Lo       HANGUL SYLLABLE MA
+B9E4          ; LV # Lo       HANGUL SYLLABLE MAE
+BA00          ; LV # Lo       HANGUL SYLLABLE MYA
+BA1C          ; LV # Lo       HANGUL SYLLABLE MYAE
+BA38          ; LV # Lo       HANGUL SYLLABLE MEO
+BA54          ; LV # Lo       HANGUL SYLLABLE ME
+BA70          ; LV # Lo       HANGUL SYLLABLE MYEO
+BA8C          ; LV # Lo       HANGUL SYLLABLE MYE
+BAA8          ; LV # Lo       HANGUL SYLLABLE MO
+BAC4          ; LV # Lo       HANGUL SYLLABLE MWA
+BAE0          ; LV # Lo       HANGUL SYLLABLE MWAE
+BAFC          ; LV # Lo       HANGUL SYLLABLE MOE
+BB18          ; LV # Lo       HANGUL SYLLABLE MYO
+BB34          ; LV # Lo       HANGUL SYLLABLE MU
+BB50          ; LV # Lo       HANGUL SYLLABLE MWEO
+BB6C          ; LV # Lo       HANGUL SYLLABLE MWE
+BB88          ; LV # Lo       HANGUL SYLLABLE MWI
+BBA4          ; LV # Lo       HANGUL SYLLABLE MYU
+BBC0          ; LV # Lo       HANGUL SYLLABLE MEU
+BBDC          ; LV # Lo       HANGUL SYLLABLE MYI
+BBF8          ; LV # Lo       HANGUL SYLLABLE MI
+BC14          ; LV # Lo       HANGUL SYLLABLE BA
+BC30          ; LV # Lo       HANGUL SYLLABLE BAE
+BC4C          ; LV # Lo       HANGUL SYLLABLE BYA
+BC68          ; LV # Lo       HANGUL SYLLABLE BYAE
+BC84          ; LV # Lo       HANGUL SYLLABLE BEO
+BCA0          ; LV # Lo       HANGUL SYLLABLE BE
+BCBC          ; LV # Lo       HANGUL SYLLABLE BYEO
+BCD8          ; LV # Lo       HANGUL SYLLABLE BYE
+BCF4          ; LV # Lo       HANGUL SYLLABLE BO
+BD10          ; LV # Lo       HANGUL SYLLABLE BWA
+BD2C          ; LV # Lo       HANGUL SYLLABLE BWAE
+BD48          ; LV # Lo       HANGUL SYLLABLE BOE
+BD64          ; LV # Lo       HANGUL SYLLABLE BYO
+BD80          ; LV # Lo       HANGUL SYLLABLE BU
+BD9C          ; LV # Lo       HANGUL SYLLABLE BWEO
+BDB8          ; LV # Lo       HANGUL SYLLABLE BWE
+BDD4          ; LV # Lo       HANGUL SYLLABLE BWI
+BDF0          ; LV # Lo       HANGUL SYLLABLE BYU
+BE0C          ; LV # Lo       HANGUL SYLLABLE BEU
+BE28          ; LV # Lo       HANGUL SYLLABLE BYI
+BE44          ; LV # Lo       HANGUL SYLLABLE BI
+BE60          ; LV # Lo       HANGUL SYLLABLE BBA
+BE7C          ; LV # Lo       HANGUL SYLLABLE BBAE
+BE98          ; LV # Lo       HANGUL SYLLABLE BBYA
+BEB4          ; LV # Lo       HANGUL SYLLABLE BBYAE
+BED0          ; LV # Lo       HANGUL SYLLABLE BBEO
+BEEC          ; LV # Lo       HANGUL SYLLABLE BBE
+BF08          ; LV # Lo       HANGUL SYLLABLE BBYEO
+BF24          ; LV # Lo       HANGUL SYLLABLE BBYE
+BF40          ; LV # Lo       HANGUL SYLLABLE BBO
+BF5C          ; LV # Lo       HANGUL SYLLABLE BBWA
+BF78          ; LV # Lo       HANGUL SYLLABLE BBWAE
+BF94          ; LV # Lo       HANGUL SYLLABLE BBOE
+BFB0          ; LV # Lo       HANGUL SYLLABLE BBYO
+BFCC          ; LV # Lo       HANGUL SYLLABLE BBU
+BFE8          ; LV # Lo       HANGUL SYLLABLE BBWEO
+C004          ; LV # Lo       HANGUL SYLLABLE BBWE
+C020          ; LV # Lo       HANGUL SYLLABLE BBWI
+C03C          ; LV # Lo       HANGUL SYLLABLE BBYU
+C058          ; LV # Lo       HANGUL SYLLABLE BBEU
+C074          ; LV # Lo       HANGUL SYLLABLE BBYI
+C090          ; LV # Lo       HANGUL SYLLABLE BBI
+C0AC          ; LV # Lo       HANGUL SYLLABLE SA
+C0C8          ; LV # Lo       HANGUL SYLLABLE SAE
+C0E4          ; LV # Lo       HANGUL SYLLABLE SYA
+C100          ; LV # Lo       HANGUL SYLLABLE SYAE
+C11C          ; LV # Lo       HANGUL SYLLABLE SEO
+C138          ; LV # Lo       HANGUL SYLLABLE SE
+C154          ; LV # Lo       HANGUL SYLLABLE SYEO
+C170          ; LV # Lo       HANGUL SYLLABLE SYE
+C18C          ; LV # Lo       HANGUL SYLLABLE SO
+C1A8          ; LV # Lo       HANGUL SYLLABLE SWA
+C1C4          ; LV # Lo       HANGUL SYLLABLE SWAE
+C1E0          ; LV # Lo       HANGUL SYLLABLE SOE
+C1FC          ; LV # Lo       HANGUL SYLLABLE SYO
+C218          ; LV # Lo       HANGUL SYLLABLE SU
+C234          ; LV # Lo       HANGUL SYLLABLE SWEO
+C250          ; LV # Lo       HANGUL SYLLABLE SWE
+C26C          ; LV # Lo       HANGUL SYLLABLE SWI
+C288          ; LV # Lo       HANGUL SYLLABLE SYU
+C2A4          ; LV # Lo       HANGUL SYLLABLE SEU
+C2C0          ; LV # Lo       HANGUL SYLLABLE SYI
+C2DC          ; LV # Lo       HANGUL SYLLABLE SI
+C2F8          ; LV # Lo       HANGUL SYLLABLE SSA
+C314          ; LV # Lo       HANGUL SYLLABLE SSAE
+C330          ; LV # Lo       HANGUL SYLLABLE SSYA
+C34C          ; LV # Lo       HANGUL SYLLABLE SSYAE
+C368          ; LV # Lo       HANGUL SYLLABLE SSEO
+C384          ; LV # Lo       HANGUL SYLLABLE SSE
+C3A0          ; LV # Lo       HANGUL SYLLABLE SSYEO
+C3BC          ; LV # Lo       HANGUL SYLLABLE SSYE
+C3D8          ; LV # Lo       HANGUL SYLLABLE SSO
+C3F4          ; LV # Lo       HANGUL SYLLABLE SSWA
+C410          ; LV # Lo       HANGUL SYLLABLE SSWAE
+C42C          ; LV # Lo       HANGUL SYLLABLE SSOE
+C448          ; LV # Lo       HANGUL SYLLABLE SSYO
+C464          ; LV # Lo       HANGUL SYLLABLE SSU
+C480          ; LV # Lo       HANGUL SYLLABLE SSWEO
+C49C          ; LV # Lo       HANGUL SYLLABLE SSWE
+C4B8          ; LV # Lo       HANGUL SYLLABLE SSWI
+C4D4          ; LV # Lo       HANGUL SYLLABLE SSYU
+C4F0          ; LV # Lo       HANGUL SYLLABLE SSEU
+C50C          ; LV # Lo       HANGUL SYLLABLE SSYI
+C528          ; LV # Lo       HANGUL SYLLABLE SSI
+C544          ; LV # Lo       HANGUL SYLLABLE A
+C560          ; LV # Lo       HANGUL SYLLABLE AE
+C57C          ; LV # Lo       HANGUL SYLLABLE YA
+C598          ; LV # Lo       HANGUL SYLLABLE YAE
+C5B4          ; LV # Lo       HANGUL SYLLABLE EO
+C5D0          ; LV # Lo       HANGUL SYLLABLE E
+C5EC          ; LV # Lo       HANGUL SYLLABLE YEO
+C608          ; LV # Lo       HANGUL SYLLABLE YE
+C624          ; LV # Lo       HANGUL SYLLABLE O
+C640          ; LV # Lo       HANGUL SYLLABLE WA
+C65C          ; LV # Lo       HANGUL SYLLABLE WAE
+C678          ; LV # Lo       HANGUL SYLLABLE OE
+C694          ; LV # Lo       HANGUL SYLLABLE YO
+C6B0          ; LV # Lo       HANGUL SYLLABLE U
+C6CC          ; LV # Lo       HANGUL SYLLABLE WEO
+C6E8          ; LV # Lo       HANGUL SYLLABLE WE
+C704          ; LV # Lo       HANGUL SYLLABLE WI
+C720          ; LV # Lo       HANGUL SYLLABLE YU
+C73C          ; LV # Lo       HANGUL SYLLABLE EU
+C758          ; LV # Lo       HANGUL SYLLABLE YI
+C774          ; LV # Lo       HANGUL SYLLABLE I
+C790          ; LV # Lo       HANGUL SYLLABLE JA
+C7AC          ; LV # Lo       HANGUL SYLLABLE JAE
+C7C8          ; LV # Lo       HANGUL SYLLABLE JYA
+C7E4          ; LV # Lo       HANGUL SYLLABLE JYAE
+C800          ; LV # Lo       HANGUL SYLLABLE JEO
+C81C          ; LV # Lo       HANGUL SYLLABLE JE
+C838          ; LV # Lo       HANGUL SYLLABLE JYEO
+C854          ; LV # Lo       HANGUL SYLLABLE JYE
+C870          ; LV # Lo       HANGUL SYLLABLE JO
+C88C          ; LV # Lo       HANGUL SYLLABLE JWA
+C8A8          ; LV # Lo       HANGUL SYLLABLE JWAE
+C8C4          ; LV # Lo       HANGUL SYLLABLE JOE
+C8E0          ; LV # Lo       HANGUL SYLLABLE JYO
+C8FC          ; LV # Lo       HANGUL SYLLABLE JU
+C918          ; LV # Lo       HANGUL SYLLABLE JWEO
+C934          ; LV # Lo       HANGUL SYLLABLE JWE
+C950          ; LV # Lo       HANGUL SYLLABLE JWI
+C96C          ; LV # Lo       HANGUL SYLLABLE JYU
+C988          ; LV # Lo       HANGUL SYLLABLE JEU
+C9A4          ; LV # Lo       HANGUL SYLLABLE JYI
+C9C0          ; LV # Lo       HANGUL SYLLABLE JI
+C9DC          ; LV # Lo       HANGUL SYLLABLE JJA
+C9F8          ; LV # Lo       HANGUL SYLLABLE JJAE
+CA14          ; LV # Lo       HANGUL SYLLABLE JJYA
+CA30          ; LV # Lo       HANGUL SYLLABLE JJYAE
+CA4C          ; LV # Lo       HANGUL SYLLABLE JJEO
+CA68          ; LV # Lo       HANGUL SYLLABLE JJE
+CA84          ; LV # Lo       HANGUL SYLLABLE JJYEO
+CAA0          ; LV # Lo       HANGUL SYLLABLE JJYE
+CABC          ; LV # Lo       HANGUL SYLLABLE JJO
+CAD8          ; LV # Lo       HANGUL SYLLABLE JJWA
+CAF4          ; LV # Lo       HANGUL SYLLABLE JJWAE
+CB10          ; LV # Lo       HANGUL SYLLABLE JJOE
+CB2C          ; LV # Lo       HANGUL SYLLABLE JJYO
+CB48          ; LV # Lo       HANGUL SYLLABLE JJU
+CB64          ; LV # Lo       HANGUL SYLLABLE JJWEO
+CB80          ; LV # Lo       HANGUL SYLLABLE JJWE
+CB9C          ; LV # Lo       HANGUL SYLLABLE JJWI
+CBB8          ; LV # Lo       HANGUL SYLLABLE JJYU
+CBD4          ; LV # Lo       HANGUL SYLLABLE JJEU
+CBF0          ; LV # Lo       HANGUL SYLLABLE JJYI
+CC0C          ; LV # Lo       HANGUL SYLLABLE JJI
+CC28          ; LV # Lo       HANGUL SYLLABLE CA
+CC44          ; LV # Lo       HANGUL SYLLABLE CAE
+CC60          ; LV # Lo       HANGUL SYLLABLE CYA
+CC7C          ; LV # Lo       HANGUL SYLLABLE CYAE
+CC98          ; LV # Lo       HANGUL SYLLABLE CEO
+CCB4          ; LV # Lo       HANGUL SYLLABLE CE
+CCD0          ; LV # Lo       HANGUL SYLLABLE CYEO
+CCEC          ; LV # Lo       HANGUL SYLLABLE CYE
+CD08          ; LV # Lo       HANGUL SYLLABLE CO
+CD24          ; LV # Lo       HANGUL SYLLABLE CWA
+CD40          ; LV # Lo       HANGUL SYLLABLE CWAE
+CD5C          ; LV # Lo       HANGUL SYLLABLE COE
+CD78          ; LV # Lo       HANGUL SYLLABLE CYO
+CD94          ; LV # Lo       HANGUL SYLLABLE CU
+CDB0          ; LV # Lo       HANGUL SYLLABLE CWEO
+CDCC          ; LV # Lo       HANGUL SYLLABLE CWE
+CDE8          ; LV # Lo       HANGUL SYLLABLE CWI
+CE04          ; LV # Lo       HANGUL SYLLABLE CYU
+CE20          ; LV # Lo       HANGUL SYLLABLE CEU
+CE3C          ; LV # Lo       HANGUL SYLLABLE CYI
+CE58          ; LV # Lo       HANGUL SYLLABLE CI
+CE74          ; LV # Lo       HANGUL SYLLABLE KA
+CE90          ; LV # Lo       HANGUL SYLLABLE KAE
+CEAC          ; LV # Lo       HANGUL SYLLABLE KYA
+CEC8          ; LV # Lo       HANGUL SYLLABLE KYAE
+CEE4          ; LV # Lo       HANGUL SYLLABLE KEO
+CF00          ; LV # Lo       HANGUL SYLLABLE KE
+CF1C          ; LV # Lo       HANGUL SYLLABLE KYEO
+CF38          ; LV # Lo       HANGUL SYLLABLE KYE
+CF54          ; LV # Lo       HANGUL SYLLABLE KO
+CF70          ; LV # Lo       HANGUL SYLLABLE KWA
+CF8C          ; LV # Lo       HANGUL SYLLABLE KWAE
+CFA8          ; LV # Lo       HANGUL SYLLABLE KOE
+CFC4          ; LV # Lo       HANGUL SYLLABLE KYO
+CFE0          ; LV # Lo       HANGUL SYLLABLE KU
+CFFC          ; LV # Lo       HANGUL SYLLABLE KWEO
+D018          ; LV # Lo       HANGUL SYLLABLE KWE
+D034          ; LV # Lo       HANGUL SYLLABLE KWI
+D050          ; LV # Lo       HANGUL SYLLABLE KYU
+D06C          ; LV # Lo       HANGUL SYLLABLE KEU
+D088          ; LV # Lo       HANGUL SYLLABLE KYI
+D0A4          ; LV # Lo       HANGUL SYLLABLE KI
+D0C0          ; LV # Lo       HANGUL SYLLABLE TA
+D0DC          ; LV # Lo       HANGUL SYLLABLE TAE
+D0F8          ; LV # Lo       HANGUL SYLLABLE TYA
+D114          ; LV # Lo       HANGUL SYLLABLE TYAE
+D130          ; LV # Lo       HANGUL SYLLABLE TEO
+D14C          ; LV # Lo       HANGUL SYLLABLE TE
+D168          ; LV # Lo       HANGUL SYLLABLE TYEO
+D184          ; LV # Lo       HANGUL SYLLABLE TYE
+D1A0          ; LV # Lo       HANGUL SYLLABLE TO
+D1BC          ; LV # Lo       HANGUL SYLLABLE TWA
+D1D8          ; LV # Lo       HANGUL SYLLABLE TWAE
+D1F4          ; LV # Lo       HANGUL SYLLABLE TOE
+D210          ; LV # Lo       HANGUL SYLLABLE TYO
+D22C          ; LV # Lo       HANGUL SYLLABLE TU
+D248          ; LV # Lo       HANGUL SYLLABLE TWEO
+D264          ; LV # Lo       HANGUL SYLLABLE TWE
+D280          ; LV # Lo       HANGUL SYLLABLE TWI
+D29C          ; LV # Lo       HANGUL SYLLABLE TYU
+D2B8          ; LV # Lo       HANGUL SYLLABLE TEU
+D2D4          ; LV # Lo       HANGUL SYLLABLE TYI
+D2F0          ; LV # Lo       HANGUL SYLLABLE TI
+D30C          ; LV # Lo       HANGUL SYLLABLE PA
+D328          ; LV # Lo       HANGUL SYLLABLE PAE
+D344          ; LV # Lo       HANGUL SYLLABLE PYA
+D360          ; LV # Lo       HANGUL SYLLABLE PYAE
+D37C          ; LV # Lo       HANGUL SYLLABLE PEO
+D398          ; LV # Lo       HANGUL SYLLABLE PE
+D3B4          ; LV # Lo       HANGUL SYLLABLE PYEO
+D3D0          ; LV # Lo       HANGUL SYLLABLE PYE
+D3EC          ; LV # Lo       HANGUL SYLLABLE PO
+D408          ; LV # Lo       HANGUL SYLLABLE PWA
+D424          ; LV # Lo       HANGUL SYLLABLE PWAE
+D440          ; LV # Lo       HANGUL SYLLABLE POE
+D45C          ; LV # Lo       HANGUL SYLLABLE PYO
+D478          ; LV # Lo       HANGUL SYLLABLE PU
+D494          ; LV # Lo       HANGUL SYLLABLE PWEO
+D4B0          ; LV # Lo       HANGUL SYLLABLE PWE
+D4CC          ; LV # Lo       HANGUL SYLLABLE PWI
+D4E8          ; LV # Lo       HANGUL SYLLABLE PYU
+D504          ; LV # Lo       HANGUL SYLLABLE PEU
+D520          ; LV # Lo       HANGUL SYLLABLE PYI
+D53C          ; LV # Lo       HANGUL SYLLABLE PI
+D558          ; LV # Lo       HANGUL SYLLABLE HA
+D574          ; LV # Lo       HANGUL SYLLABLE HAE
+D590          ; LV # Lo       HANGUL SYLLABLE HYA
+D5AC          ; LV # Lo       HANGUL SYLLABLE HYAE
+D5C8          ; LV # Lo       HANGUL SYLLABLE HEO
+D5E4          ; LV # Lo       HANGUL SYLLABLE HE
+D600          ; LV # Lo       HANGUL SYLLABLE HYEO
+D61C          ; LV # Lo       HANGUL SYLLABLE HYE
+D638          ; LV # Lo       HANGUL SYLLABLE HO
+D654          ; LV # Lo       HANGUL SYLLABLE HWA
+D670          ; LV # Lo       HANGUL SYLLABLE HWAE
+D68C          ; LV # Lo       HANGUL SYLLABLE HOE
+D6A8          ; LV # Lo       HANGUL SYLLABLE HYO
+D6C4          ; LV # Lo       HANGUL SYLLABLE HU
+D6E0          ; LV # Lo       HANGUL SYLLABLE HWEO
+D6FC          ; LV # Lo       HANGUL SYLLABLE HWE
+D718          ; LV # Lo       HANGUL SYLLABLE HWI
+D734          ; LV # Lo       HANGUL SYLLABLE HYU
+D750          ; LV # Lo       HANGUL SYLLABLE HEU
+D76C          ; LV # Lo       HANGUL SYLLABLE HYI
+D788          ; LV # Lo       HANGUL SYLLABLE HI
+
+# Total code points: 399
+
+# ================================================
+
+AC01..AC1B    ; LVT # Lo  [27] HANGUL SYLLABLE GAG..HANGUL SYLLABLE GAH
+AC1D..AC37    ; LVT # Lo  [27] HANGUL SYLLABLE GAEG..HANGUL SYLLABLE GAEH
+AC39..AC53    ; LVT # Lo  [27] HANGUL SYLLABLE GYAG..HANGUL SYLLABLE GYAH
+AC55..AC6F    ; LVT # Lo  [27] HANGUL SYLLABLE GYAEG..HANGUL SYLLABLE GYAEH
+AC71..AC8B    ; LVT # Lo  [27] HANGUL SYLLABLE GEOG..HANGUL SYLLABLE GEOH
+AC8D..ACA7    ; LVT # Lo  [27] HANGUL SYLLABLE GEG..HANGUL SYLLABLE GEH
+ACA9..ACC3    ; LVT # Lo  [27] HANGUL SYLLABLE GYEOG..HANGUL SYLLABLE GYEOH
+ACC5..ACDF    ; LVT # Lo  [27] HANGUL SYLLABLE GYEG..HANGUL SYLLABLE GYEH
+ACE1..ACFB    ; LVT # Lo  [27] HANGUL SYLLABLE GOG..HANGUL SYLLABLE GOH
+ACFD..AD17    ; LVT # Lo  [27] HANGUL SYLLABLE GWAG..HANGUL SYLLABLE GWAH
+AD19..AD33    ; LVT # Lo  [27] HANGUL SYLLABLE GWAEG..HANGUL SYLLABLE GWAEH
+AD35..AD4F    ; LVT # Lo  [27] HANGUL SYLLABLE GOEG..HANGUL SYLLABLE GOEH
+AD51..AD6B    ; LVT # Lo  [27] HANGUL SYLLABLE GYOG..HANGUL SYLLABLE GYOH
+AD6D..AD87    ; LVT # Lo  [27] HANGUL SYLLABLE GUG..HANGUL SYLLABLE GUH
+AD89..ADA3    ; LVT # Lo  [27] HANGUL SYLLABLE GWEOG..HANGUL SYLLABLE GWEOH
+ADA5..ADBF    ; LVT # Lo  [27] HANGUL SYLLABLE GWEG..HANGUL SYLLABLE GWEH
+ADC1..ADDB    ; LVT # Lo  [27] HANGUL SYLLABLE GWIG..HANGUL SYLLABLE GWIH
+ADDD..ADF7    ; LVT # Lo  [27] HANGUL SYLLABLE GYUG..HANGUL SYLLABLE GYUH
+ADF9..AE13    ; LVT # Lo  [27] HANGUL SYLLABLE GEUG..HANGUL SYLLABLE GEUH
+AE15..AE2F    ; LVT # Lo  [27] HANGUL SYLLABLE GYIG..HANGUL SYLLABLE GYIH
+AE31..AE4B    ; LVT # Lo  [27] HANGUL SYLLABLE GIG..HANGUL SYLLABLE GIH
+AE4D..AE67    ; LVT # Lo  [27] HANGUL SYLLABLE GGAG..HANGUL SYLLABLE GGAH
+AE69..AE83    ; LVT # Lo  [27] HANGUL SYLLABLE GGAEG..HANGUL SYLLABLE GGAEH
+AE85..AE9F    ; LVT # Lo  [27] HANGUL SYLLABLE GGYAG..HANGUL SYLLABLE GGYAH
+AEA1..AEBB    ; LVT # Lo  [27] HANGUL SYLLABLE GGYAEG..HANGUL SYLLABLE GGYAEH
+AEBD..AED7    ; LVT # Lo  [27] HANGUL SYLLABLE GGEOG..HANGUL SYLLABLE GGEOH
+AED9..AEF3    ; LVT # Lo  [27] HANGUL SYLLABLE GGEG..HANGUL SYLLABLE GGEH
+AEF5..AF0F    ; LVT # Lo  [27] HANGUL SYLLABLE GGYEOG..HANGUL SYLLABLE GGYEOH
+AF11..AF2B    ; LVT # Lo  [27] HANGUL SYLLABLE GGYEG..HANGUL SYLLABLE GGYEH
+AF2D..AF47    ; LVT # Lo  [27] HANGUL SYLLABLE GGOG..HANGUL SYLLABLE GGOH
+AF49..AF63    ; LVT # Lo  [27] HANGUL SYLLABLE GGWAG..HANGUL SYLLABLE GGWAH
+AF65..AF7F    ; LVT # Lo  [27] HANGUL SYLLABLE GGWAEG..HANGUL SYLLABLE GGWAEH
+AF81..AF9B    ; LVT # Lo  [27] HANGUL SYLLABLE GGOEG..HANGUL SYLLABLE GGOEH
+AF9D..AFB7    ; LVT # Lo  [27] HANGUL SYLLABLE GGYOG..HANGUL SYLLABLE GGYOH
+AFB9..AFD3    ; LVT # Lo  [27] HANGUL SYLLABLE GGUG..HANGUL SYLLABLE GGUH
+AFD5..AFEF    ; LVT # Lo  [27] HANGUL SYLLABLE GGWEOG..HANGUL SYLLABLE GGWEOH
+AFF1..B00B    ; LVT # Lo  [27] HANGUL SYLLABLE GGWEG..HANGUL SYLLABLE GGWEH
+B00D..B027    ; LVT # Lo  [27] HANGUL SYLLABLE GGWIG..HANGUL SYLLABLE GGWIH
+B029..B043    ; LVT # Lo  [27] HANGUL SYLLABLE GGYUG..HANGUL SYLLABLE GGYUH
+B045..B05F    ; LVT # Lo  [27] HANGUL SYLLABLE GGEUG..HANGUL SYLLABLE GGEUH
+B061..B07B    ; LVT # Lo  [27] HANGUL SYLLABLE GGYIG..HANGUL SYLLABLE GGYIH
+B07D..B097    ; LVT # Lo  [27] HANGUL SYLLABLE GGIG..HANGUL SYLLABLE GGIH
+B099..B0B3    ; LVT # Lo  [27] HANGUL SYLLABLE NAG..HANGUL SYLLABLE NAH
+B0B5..B0CF    ; LVT # Lo  [27] HANGUL SYLLABLE NAEG..HANGUL SYLLABLE NAEH
+B0D1..B0EB    ; LVT # Lo  [27] HANGUL SYLLABLE NYAG..HANGUL SYLLABLE NYAH
+B0ED..B107    ; LVT # Lo  [27] HANGUL SYLLABLE NYAEG..HANGUL SYLLABLE NYAEH
+B109..B123    ; LVT # Lo  [27] HANGUL SYLLABLE NEOG..HANGUL SYLLABLE NEOH
+B125..B13F    ; LVT # Lo  [27] HANGUL SYLLABLE NEG..HANGUL SYLLABLE NEH
+B141..B15B    ; LVT # Lo  [27] HANGUL SYLLABLE NYEOG..HANGUL SYLLABLE NYEOH
+B15D..B177    ; LVT # Lo  [27] HANGUL SYLLABLE NYEG..HANGUL SYLLABLE NYEH
+B179..B193    ; LVT # Lo  [27] HANGUL SYLLABLE NOG..HANGUL SYLLABLE NOH
+B195..B1AF    ; LVT # Lo  [27] HANGUL SYLLABLE NWAG..HANGUL SYLLABLE NWAH
+B1B1..B1CB    ; LVT # Lo  [27] HANGUL SYLLABLE NWAEG..HANGUL SYLLABLE NWAEH
+B1CD..B1E7    ; LVT # Lo  [27] HANGUL SYLLABLE NOEG..HANGUL SYLLABLE NOEH
+B1E9..B203    ; LVT # Lo  [27] HANGUL SYLLABLE NYOG..HANGUL SYLLABLE NYOH
+B205..B21F    ; LVT # Lo  [27] HANGUL SYLLABLE NUG..HANGUL SYLLABLE NUH
+B221..B23B    ; LVT # Lo  [27] HANGUL SYLLABLE NWEOG..HANGUL SYLLABLE NWEOH
+B23D..B257    ; LVT # Lo  [27] HANGUL SYLLABLE NWEG..HANGUL SYLLABLE NWEH
+B259..B273    ; LVT # Lo  [27] HANGUL SYLLABLE NWIG..HANGUL SYLLABLE NWIH
+B275..B28F    ; LVT # Lo  [27] HANGUL SYLLABLE NYUG..HANGUL SYLLABLE NYUH
+B291..B2AB    ; LVT # Lo  [27] HANGUL SYLLABLE NEUG..HANGUL SYLLABLE NEUH
+B2AD..B2C7    ; LVT # Lo  [27] HANGUL SYLLABLE NYIG..HANGUL SYLLABLE NYIH
+B2C9..B2E3    ; LVT # Lo  [27] HANGUL SYLLABLE NIG..HANGUL SYLLABLE NIH
+B2E5..B2FF    ; LVT # Lo  [27] HANGUL SYLLABLE DAG..HANGUL SYLLABLE DAH
+B301..B31B    ; LVT # Lo  [27] HANGUL SYLLABLE DAEG..HANGUL SYLLABLE DAEH
+B31D..B337    ; LVT # Lo  [27] HANGUL SYLLABLE DYAG..HANGUL SYLLABLE DYAH
+B339..B353    ; LVT # Lo  [27] HANGUL SYLLABLE DYAEG..HANGUL SYLLABLE DYAEH
+B355..B36F    ; LVT # Lo  [27] HANGUL SYLLABLE DEOG..HANGUL SYLLABLE DEOH
+B371..B38B    ; LVT # Lo  [27] HANGUL SYLLABLE DEG..HANGUL SYLLABLE DEH
+B38D..B3A7    ; LVT # Lo  [27] HANGUL SYLLABLE DYEOG..HANGUL SYLLABLE DYEOH
+B3A9..B3C3    ; LVT # Lo  [27] HANGUL SYLLABLE DYEG..HANGUL SYLLABLE DYEH
+B3C5..B3DF    ; LVT # Lo  [27] HANGUL SYLLABLE DOG..HANGUL SYLLABLE DOH
+B3E1..B3FB    ; LVT # Lo  [27] HANGUL SYLLABLE DWAG..HANGUL SYLLABLE DWAH
+B3FD..B417    ; LVT # Lo  [27] HANGUL SYLLABLE DWAEG..HANGUL SYLLABLE DWAEH
+B419..B433    ; LVT # Lo  [27] HANGUL SYLLABLE DOEG..HANGUL SYLLABLE DOEH
+B435..B44F    ; LVT # Lo  [27] HANGUL SYLLABLE DYOG..HANGUL SYLLABLE DYOH
+B451..B46B    ; LVT # Lo  [27] HANGUL SYLLABLE DUG..HANGUL SYLLABLE DUH
+B46D..B487    ; LVT # Lo  [27] HANGUL SYLLABLE DWEOG..HANGUL SYLLABLE DWEOH
+B489..B4A3    ; LVT # Lo  [27] HANGUL SYLLABLE DWEG..HANGUL SYLLABLE DWEH
+B4A5..B4BF    ; LVT # Lo  [27] HANGUL SYLLABLE DWIG..HANGUL SYLLABLE DWIH
+B4C1..B4DB    ; LVT # Lo  [27] HANGUL SYLLABLE DYUG..HANGUL SYLLABLE DYUH
+B4DD..B4F7    ; LVT # Lo  [27] HANGUL SYLLABLE DEUG..HANGUL SYLLABLE DEUH
+B4F9..B513    ; LVT # Lo  [27] HANGUL SYLLABLE DYIG..HANGUL SYLLABLE DYIH
+B515..B52F    ; LVT # Lo  [27] HANGUL SYLLABLE DIG..HANGUL SYLLABLE DIH
+B531..B54B    ; LVT # Lo  [27] HANGUL SYLLABLE DDAG..HANGUL SYLLABLE DDAH
+B54D..B567    ; LVT # Lo  [27] HANGUL SYLLABLE DDAEG..HANGUL SYLLABLE DDAEH
+B569..B583    ; LVT # Lo  [27] HANGUL SYLLABLE DDYAG..HANGUL SYLLABLE DDYAH
+B585..B59F    ; LVT # Lo  [27] HANGUL SYLLABLE DDYAEG..HANGUL SYLLABLE DDYAEH
+B5A1..B5BB    ; LVT # Lo  [27] HANGUL SYLLABLE DDEOG..HANGUL SYLLABLE DDEOH
+B5BD..B5D7    ; LVT # Lo  [27] HANGUL SYLLABLE DDEG..HANGUL SYLLABLE DDEH
+B5D9..B5F3    ; LVT # Lo  [27] HANGUL SYLLABLE DDYEOG..HANGUL SYLLABLE DDYEOH
+B5F5..B60F    ; LVT # Lo  [27] HANGUL SYLLABLE DDYEG..HANGUL SYLLABLE DDYEH
+B611..B62B    ; LVT # Lo  [27] HANGUL SYLLABLE DDOG..HANGUL SYLLABLE DDOH
+B62D..B647    ; LVT # Lo  [27] HANGUL SYLLABLE DDWAG..HANGUL SYLLABLE DDWAH
+B649..B663    ; LVT # Lo  [27] HANGUL SYLLABLE DDWAEG..HANGUL SYLLABLE DDWAEH
+B665..B67F    ; LVT # Lo  [27] HANGUL SYLLABLE DDOEG..HANGUL SYLLABLE DDOEH
+B681..B69B    ; LVT # Lo  [27] HANGUL SYLLABLE DDYOG..HANGUL SYLLABLE DDYOH
+B69D..B6B7    ; LVT # Lo  [27] HANGUL SYLLABLE DDUG..HANGUL SYLLABLE DDUH
+B6B9..B6D3    ; LVT # Lo  [27] HANGUL SYLLABLE DDWEOG..HANGUL SYLLABLE DDWEOH
+B6D5..B6EF    ; LVT # Lo  [27] HANGUL SYLLABLE DDWEG..HANGUL SYLLABLE DDWEH
+B6F1..B70B    ; LVT # Lo  [27] HANGUL SYLLABLE DDWIG..HANGUL SYLLABLE DDWIH
+B70D..B727    ; LVT # Lo  [27] HANGUL SYLLABLE DDYUG..HANGUL SYLLABLE DDYUH
+B729..B743    ; LVT # Lo  [27] HANGUL SYLLABLE DDEUG..HANGUL SYLLABLE DDEUH
+B745..B75F    ; LVT # Lo  [27] HANGUL SYLLABLE DDYIG..HANGUL SYLLABLE DDYIH
+B761..B77B    ; LVT # Lo  [27] HANGUL SYLLABLE DDIG..HANGUL SYLLABLE DDIH
+B77D..B797    ; LVT # Lo  [27] HANGUL SYLLABLE RAG..HANGUL SYLLABLE RAH
+B799..B7B3    ; LVT # Lo  [27] HANGUL SYLLABLE RAEG..HANGUL SYLLABLE RAEH
+B7B5..B7CF    ; LVT # Lo  [27] HANGUL SYLLABLE RYAG..HANGUL SYLLABLE RYAH
+B7D1..B7EB    ; LVT # Lo  [27] HANGUL SYLLABLE RYAEG..HANGUL SYLLABLE RYAEH
+B7ED..B807    ; LVT # Lo  [27] HANGUL SYLLABLE REOG..HANGUL SYLLABLE REOH
+B809..B823    ; LVT # Lo  [27] HANGUL SYLLABLE REG..HANGUL SYLLABLE REH
+B825..B83F    ; LVT # Lo  [27] HANGUL SYLLABLE RYEOG..HANGUL SYLLABLE RYEOH
+B841..B85B    ; LVT # Lo  [27] HANGUL SYLLABLE RYEG..HANGUL SYLLABLE RYEH
+B85D..B877    ; LVT # Lo  [27] HANGUL SYLLABLE ROG..HANGUL SYLLABLE ROH
+B879..B893    ; LVT # Lo  [27] HANGUL SYLLABLE RWAG..HANGUL SYLLABLE RWAH
+B895..B8AF    ; LVT # Lo  [27] HANGUL SYLLABLE RWAEG..HANGUL SYLLABLE RWAEH
+B8B1..B8CB    ; LVT # Lo  [27] HANGUL SYLLABLE ROEG..HANGUL SYLLABLE ROEH
+B8CD..B8E7    ; LVT # Lo  [27] HANGUL SYLLABLE RYOG..HANGUL SYLLABLE RYOH
+B8E9..B903    ; LVT # Lo  [27] HANGUL SYLLABLE RUG..HANGUL SYLLABLE RUH
+B905..B91F    ; LVT # Lo  [27] HANGUL SYLLABLE RWEOG..HANGUL SYLLABLE RWEOH
+B921..B93B    ; LVT # Lo  [27] HANGUL SYLLABLE RWEG..HANGUL SYLLABLE RWEH
+B93D..B957    ; LVT # Lo  [27] HANGUL SYLLABLE RWIG..HANGUL SYLLABLE RWIH
+B959..B973    ; LVT # Lo  [27] HANGUL SYLLABLE RYUG..HANGUL SYLLABLE RYUH
+B975..B98F    ; LVT # Lo  [27] HANGUL SYLLABLE REUG..HANGUL SYLLABLE REUH
+B991..B9AB    ; LVT # Lo  [27] HANGUL SYLLABLE RYIG..HANGUL SYLLABLE RYIH
+B9AD..B9C7    ; LVT # Lo  [27] HANGUL SYLLABLE RIG..HANGUL SYLLABLE RIH
+B9C9..B9E3    ; LVT # Lo  [27] HANGUL SYLLABLE MAG..HANGUL SYLLABLE MAH
+B9E5..B9FF    ; LVT # Lo  [27] HANGUL SYLLABLE MAEG..HANGUL SYLLABLE MAEH
+BA01..BA1B    ; LVT # Lo  [27] HANGUL SYLLABLE MYAG..HANGUL SYLLABLE MYAH
+BA1D..BA37    ; LVT # Lo  [27] HANGUL SYLLABLE MYAEG..HANGUL SYLLABLE MYAEH
+BA39..BA53    ; LVT # Lo  [27] HANGUL SYLLABLE MEOG..HANGUL SYLLABLE MEOH
+BA55..BA6F    ; LVT # Lo  [27] HANGUL SYLLABLE MEG..HANGUL SYLLABLE MEH
+BA71..BA8B    ; LVT # Lo  [27] HANGUL SYLLABLE MYEOG..HANGUL SYLLABLE MYEOH
+BA8D..BAA7    ; LVT # Lo  [27] HANGUL SYLLABLE MYEG..HANGUL SYLLABLE MYEH
+BAA9..BAC3    ; LVT # Lo  [27] HANGUL SYLLABLE MOG..HANGUL SYLLABLE MOH
+BAC5..BADF    ; LVT # Lo  [27] HANGUL SYLLABLE MWAG..HANGUL SYLLABLE MWAH
+BAE1..BAFB    ; LVT # Lo  [27] HANGUL SYLLABLE MWAEG..HANGUL SYLLABLE MWAEH
+BAFD..BB17    ; LVT # Lo  [27] HANGUL SYLLABLE MOEG..HANGUL SYLLABLE MOEH
+BB19..BB33    ; LVT # Lo  [27] HANGUL SYLLABLE MYOG..HANGUL SYLLABLE MYOH
+BB35..BB4F    ; LVT # Lo  [27] HANGUL SYLLABLE MUG..HANGUL SYLLABLE MUH
+BB51..BB6B    ; LVT # Lo  [27] HANGUL SYLLABLE MWEOG..HANGUL SYLLABLE MWEOH
+BB6D..BB87    ; LVT # Lo  [27] HANGUL SYLLABLE MWEG..HANGUL SYLLABLE MWEH
+BB89..BBA3    ; LVT # Lo  [27] HANGUL SYLLABLE MWIG..HANGUL SYLLABLE MWIH
+BBA5..BBBF    ; LVT # Lo  [27] HANGUL SYLLABLE MYUG..HANGUL SYLLABLE MYUH
+BBC1..BBDB    ; LVT # Lo  [27] HANGUL SYLLABLE MEUG..HANGUL SYLLABLE MEUH
+BBDD..BBF7    ; LVT # Lo  [27] HANGUL SYLLABLE MYIG..HANGUL SYLLABLE MYIH
+BBF9..BC13    ; LVT # Lo  [27] HANGUL SYLLABLE MIG..HANGUL SYLLABLE MIH
+BC15..BC2F    ; LVT # Lo  [27] HANGUL SYLLABLE BAG..HANGUL SYLLABLE BAH
+BC31..BC4B    ; LVT # Lo  [27] HANGUL SYLLABLE BAEG..HANGUL SYLLABLE BAEH
+BC4D..BC67    ; LVT # Lo  [27] HANGUL SYLLABLE BYAG..HANGUL SYLLABLE BYAH
+BC69..BC83    ; LVT # Lo  [27] HANGUL SYLLABLE BYAEG..HANGUL SYLLABLE BYAEH
+BC85..BC9F    ; LVT # Lo  [27] HANGUL SYLLABLE BEOG..HANGUL SYLLABLE BEOH
+BCA1..BCBB    ; LVT # Lo  [27] HANGUL SYLLABLE BEG..HANGUL SYLLABLE BEH
+BCBD..BCD7    ; LVT # Lo  [27] HANGUL SYLLABLE BYEOG..HANGUL SYLLABLE BYEOH
+BCD9..BCF3    ; LVT # Lo  [27] HANGUL SYLLABLE BYEG..HANGUL SYLLABLE BYEH
+BCF5..BD0F    ; LVT # Lo  [27] HANGUL SYLLABLE BOG..HANGUL SYLLABLE BOH
+BD11..BD2B    ; LVT # Lo  [27] HANGUL SYLLABLE BWAG..HANGUL SYLLABLE BWAH
+BD2D..BD47    ; LVT # Lo  [27] HANGUL SYLLABLE BWAEG..HANGUL SYLLABLE BWAEH
+BD49..BD63    ; LVT # Lo  [27] HANGUL SYLLABLE BOEG..HANGUL SYLLABLE BOEH
+BD65..BD7F    ; LVT # Lo  [27] HANGUL SYLLABLE BYOG..HANGUL SYLLABLE BYOH
+BD81..BD9B    ; LVT # Lo  [27] HANGUL SYLLABLE BUG..HANGUL SYLLABLE BUH
+BD9D..BDB7    ; LVT # Lo  [27] HANGUL SYLLABLE BWEOG..HANGUL SYLLABLE BWEOH
+BDB9..BDD3    ; LVT # Lo  [27] HANGUL SYLLABLE BWEG..HANGUL SYLLABLE BWEH
+BDD5..BDEF    ; LVT # Lo  [27] HANGUL SYLLABLE BWIG..HANGUL SYLLABLE BWIH
+BDF1..BE0B    ; LVT # Lo  [27] HANGUL SYLLABLE BYUG..HANGUL SYLLABLE BYUH
+BE0D..BE27    ; LVT # Lo  [27] HANGUL SYLLABLE BEUG..HANGUL SYLLABLE BEUH
+BE29..BE43    ; LVT # Lo  [27] HANGUL SYLLABLE BYIG..HANGUL SYLLABLE BYIH
+BE45..BE5F    ; LVT # Lo  [27] HANGUL SYLLABLE BIG..HANGUL SYLLABLE BIH
+BE61..BE7B    ; LVT # Lo  [27] HANGUL SYLLABLE BBAG..HANGUL SYLLABLE BBAH
+BE7D..BE97    ; LVT # Lo  [27] HANGUL SYLLABLE BBAEG..HANGUL SYLLABLE BBAEH
+BE99..BEB3    ; LVT # Lo  [27] HANGUL SYLLABLE BBYAG..HANGUL SYLLABLE BBYAH
+BEB5..BECF    ; LVT # Lo  [27] HANGUL SYLLABLE BBYAEG..HANGUL SYLLABLE BBYAEH
+BED1..BEEB    ; LVT # Lo  [27] HANGUL SYLLABLE BBEOG..HANGUL SYLLABLE BBEOH
+BEED..BF07    ; LVT # Lo  [27] HANGUL SYLLABLE BBEG..HANGUL SYLLABLE BBEH
+BF09..BF23    ; LVT # Lo  [27] HANGUL SYLLABLE BBYEOG..HANGUL SYLLABLE BBYEOH
+BF25..BF3F    ; LVT # Lo  [27] HANGUL SYLLABLE BBYEG..HANGUL SYLLABLE BBYEH
+BF41..BF5B    ; LVT # Lo  [27] HANGUL SYLLABLE BBOG..HANGUL SYLLABLE BBOH
+BF5D..BF77    ; LVT # Lo  [27] HANGUL SYLLABLE BBWAG..HANGUL SYLLABLE BBWAH
+BF79..BF93    ; LVT # Lo  [27] HANGUL SYLLABLE BBWAEG..HANGUL SYLLABLE BBWAEH
+BF95..BFAF    ; LVT # Lo  [27] HANGUL SYLLABLE BBOEG..HANGUL SYLLABLE BBOEH
+BFB1..BFCB    ; LVT # Lo  [27] HANGUL SYLLABLE BBYOG..HANGUL SYLLABLE BBYOH
+BFCD..BFE7    ; LVT # Lo  [27] HANGUL SYLLABLE BBUG..HANGUL SYLLABLE BBUH
+BFE9..C003    ; LVT # Lo  [27] HANGUL SYLLABLE BBWEOG..HANGUL SYLLABLE BBWEOH
+C005..C01F    ; LVT # Lo  [27] HANGUL SYLLABLE BBWEG..HANGUL SYLLABLE BBWEH
+C021..C03B    ; LVT # Lo  [27] HANGUL SYLLABLE BBWIG..HANGUL SYLLABLE BBWIH
+C03D..C057    ; LVT # Lo  [27] HANGUL SYLLABLE BBYUG..HANGUL SYLLABLE BBYUH
+C059..C073    ; LVT # Lo  [27] HANGUL SYLLABLE BBEUG..HANGUL SYLLABLE BBEUH
+C075..C08F    ; LVT # Lo  [27] HANGUL SYLLABLE BBYIG..HANGUL SYLLABLE BBYIH
+C091..C0AB    ; LVT # Lo  [27] HANGUL SYLLABLE BBIG..HANGUL SYLLABLE BBIH
+C0AD..C0C7    ; LVT # Lo  [27] HANGUL SYLLABLE SAG..HANGUL SYLLABLE SAH
+C0C9..C0E3    ; LVT # Lo  [27] HANGUL SYLLABLE SAEG..HANGUL SYLLABLE SAEH
+C0E5..C0FF    ; LVT # Lo  [27] HANGUL SYLLABLE SYAG..HANGUL SYLLABLE SYAH
+C101..C11B    ; LVT # Lo  [27] HANGUL SYLLABLE SYAEG..HANGUL SYLLABLE SYAEH
+C11D..C137    ; LVT # Lo  [27] HANGUL SYLLABLE SEOG..HANGUL SYLLABLE SEOH
+C139..C153    ; LVT # Lo  [27] HANGUL SYLLABLE SEG..HANGUL SYLLABLE SEH
+C155..C16F    ; LVT # Lo  [27] HANGUL SYLLABLE SYEOG..HANGUL SYLLABLE SYEOH
+C171..C18B    ; LVT # Lo  [27] HANGUL SYLLABLE SYEG..HANGUL SYLLABLE SYEH
+C18D..C1A7    ; LVT # Lo  [27] HANGUL SYLLABLE SOG..HANGUL SYLLABLE SOH
+C1A9..C1C3    ; LVT # Lo  [27] HANGUL SYLLABLE SWAG..HANGUL SYLLABLE SWAH
+C1C5..C1DF    ; LVT # Lo  [27] HANGUL SYLLABLE SWAEG..HANGUL SYLLABLE SWAEH
+C1E1..C1FB    ; LVT # Lo  [27] HANGUL SYLLABLE SOEG..HANGUL SYLLABLE SOEH
+C1FD..C217    ; LVT # Lo  [27] HANGUL SYLLABLE SYOG..HANGUL SYLLABLE SYOH
+C219..C233    ; LVT # Lo  [27] HANGUL SYLLABLE SUG..HANGUL SYLLABLE SUH
+C235..C24F    ; LVT # Lo  [27] HANGUL SYLLABLE SWEOG..HANGUL SYLLABLE SWEOH
+C251..C26B    ; LVT # Lo  [27] HANGUL SYLLABLE SWEG..HANGUL SYLLABLE SWEH
+C26D..C287    ; LVT # Lo  [27] HANGUL SYLLABLE SWIG..HANGUL SYLLABLE SWIH
+C289..C2A3    ; LVT # Lo  [27] HANGUL SYLLABLE SYUG..HANGUL SYLLABLE SYUH
+C2A5..C2BF    ; LVT # Lo  [27] HANGUL SYLLABLE SEUG..HANGUL SYLLABLE SEUH
+C2C1..C2DB    ; LVT # Lo  [27] HANGUL SYLLABLE SYIG..HANGUL SYLLABLE SYIH
+C2DD..C2F7    ; LVT # Lo  [27] HANGUL SYLLABLE SIG..HANGUL SYLLABLE SIH
+C2F9..C313    ; LVT # Lo  [27] HANGUL SYLLABLE SSAG..HANGUL SYLLABLE SSAH
+C315..C32F    ; LVT # Lo  [27] HANGUL SYLLABLE SSAEG..HANGUL SYLLABLE SSAEH
+C331..C34B    ; LVT # Lo  [27] HANGUL SYLLABLE SSYAG..HANGUL SYLLABLE SSYAH
+C34D..C367    ; LVT # Lo  [27] HANGUL SYLLABLE SSYAEG..HANGUL SYLLABLE SSYAEH
+C369..C383    ; LVT # Lo  [27] HANGUL SYLLABLE SSEOG..HANGUL SYLLABLE SSEOH
+C385..C39F    ; LVT # Lo  [27] HANGUL SYLLABLE SSEG..HANGUL SYLLABLE SSEH
+C3A1..C3BB    ; LVT # Lo  [27] HANGUL SYLLABLE SSYEOG..HANGUL SYLLABLE SSYEOH
+C3BD..C3D7    ; LVT # Lo  [27] HANGUL SYLLABLE SSYEG..HANGUL SYLLABLE SSYEH
+C3D9..C3F3    ; LVT # Lo  [27] HANGUL SYLLABLE SSOG..HANGUL SYLLABLE SSOH
+C3F5..C40F    ; LVT # Lo  [27] HANGUL SYLLABLE SSWAG..HANGUL SYLLABLE SSWAH
+C411..C42B    ; LVT # Lo  [27] HANGUL SYLLABLE SSWAEG..HANGUL SYLLABLE SSWAEH
+C42D..C447    ; LVT # Lo  [27] HANGUL SYLLABLE SSOEG..HANGUL SYLLABLE SSOEH
+C449..C463    ; LVT # Lo  [27] HANGUL SYLLABLE SSYOG..HANGUL SYLLABLE SSYOH
+C465..C47F    ; LVT # Lo  [27] HANGUL SYLLABLE SSUG..HANGUL SYLLABLE SSUH
+C481..C49B    ; LVT # Lo  [27] HANGUL SYLLABLE SSWEOG..HANGUL SYLLABLE SSWEOH
+C49D..C4B7    ; LVT # Lo  [27] HANGUL SYLLABLE SSWEG..HANGUL SYLLABLE SSWEH
+C4B9..C4D3    ; LVT # Lo  [27] HANGUL SYLLABLE SSWIG..HANGUL SYLLABLE SSWIH
+C4D5..C4EF    ; LVT # Lo  [27] HANGUL SYLLABLE SSYUG..HANGUL SYLLABLE SSYUH
+C4F1..C50B    ; LVT # Lo  [27] HANGUL SYLLABLE SSEUG..HANGUL SYLLABLE SSEUH
+C50D..C527    ; LVT # Lo  [27] HANGUL SYLLABLE SSYIG..HANGUL SYLLABLE SSYIH
+C529..C543    ; LVT # Lo  [27] HANGUL SYLLABLE SSIG..HANGUL SYLLABLE SSIH
+C545..C55F    ; LVT # Lo  [27] HANGUL SYLLABLE AG..HANGUL SYLLABLE AH
+C561..C57B    ; LVT # Lo  [27] HANGUL SYLLABLE AEG..HANGUL SYLLABLE AEH
+C57D..C597    ; LVT # Lo  [27] HANGUL SYLLABLE YAG..HANGUL SYLLABLE YAH
+C599..C5B3    ; LVT # Lo  [27] HANGUL SYLLABLE YAEG..HANGUL SYLLABLE YAEH
+C5B5..C5CF    ; LVT # Lo  [27] HANGUL SYLLABLE EOG..HANGUL SYLLABLE EOH
+C5D1..C5EB    ; LVT # Lo  [27] HANGUL SYLLABLE EG..HANGUL SYLLABLE EH
+C5ED..C607    ; LVT # Lo  [27] HANGUL SYLLABLE YEOG..HANGUL SYLLABLE YEOH
+C609..C623    ; LVT # Lo  [27] HANGUL SYLLABLE YEG..HANGUL SYLLABLE YEH
+C625..C63F    ; LVT # Lo  [27] HANGUL SYLLABLE OG..HANGUL SYLLABLE OH
+C641..C65B    ; LVT # Lo  [27] HANGUL SYLLABLE WAG..HANGUL SYLLABLE WAH
+C65D..C677    ; LVT # Lo  [27] HANGUL SYLLABLE WAEG..HANGUL SYLLABLE WAEH
+C679..C693    ; LVT # Lo  [27] HANGUL SYLLABLE OEG..HANGUL SYLLABLE OEH
+C695..C6AF    ; LVT # Lo  [27] HANGUL SYLLABLE YOG..HANGUL SYLLABLE YOH
+C6B1..C6CB    ; LVT # Lo  [27] HANGUL SYLLABLE UG..HANGUL SYLLABLE UH
+C6CD..C6E7    ; LVT # Lo  [27] HANGUL SYLLABLE WEOG..HANGUL SYLLABLE WEOH
+C6E9..C703    ; LVT # Lo  [27] HANGUL SYLLABLE WEG..HANGUL SYLLABLE WEH
+C705..C71F    ; LVT # Lo  [27] HANGUL SYLLABLE WIG..HANGUL SYLLABLE WIH
+C721..C73B    ; LVT # Lo  [27] HANGUL SYLLABLE YUG..HANGUL SYLLABLE YUH
+C73D..C757    ; LVT # Lo  [27] HANGUL SYLLABLE EUG..HANGUL SYLLABLE EUH
+C759..C773    ; LVT # Lo  [27] HANGUL SYLLABLE YIG..HANGUL SYLLABLE YIH
+C775..C78F    ; LVT # Lo  [27] HANGUL SYLLABLE IG..HANGUL SYLLABLE IH
+C791..C7AB    ; LVT # Lo  [27] HANGUL SYLLABLE JAG..HANGUL SYLLABLE JAH
+C7AD..C7C7    ; LVT # Lo  [27] HANGUL SYLLABLE JAEG..HANGUL SYLLABLE JAEH
+C7C9..C7E3    ; LVT # Lo  [27] HANGUL SYLLABLE JYAG..HANGUL SYLLABLE JYAH
+C7E5..C7FF    ; LVT # Lo  [27] HANGUL SYLLABLE JYAEG..HANGUL SYLLABLE JYAEH
+C801..C81B    ; LVT # Lo  [27] HANGUL SYLLABLE JEOG..HANGUL SYLLABLE JEOH
+C81D..C837    ; LVT # Lo  [27] HANGUL SYLLABLE JEG..HANGUL SYLLABLE JEH
+C839..C853    ; LVT # Lo  [27] HANGUL SYLLABLE JYEOG..HANGUL SYLLABLE JYEOH
+C855..C86F    ; LVT # Lo  [27] HANGUL SYLLABLE JYEG..HANGUL SYLLABLE JYEH
+C871..C88B    ; LVT # Lo  [27] HANGUL SYLLABLE JOG..HANGUL SYLLABLE JOH
+C88D..C8A7    ; LVT # Lo  [27] HANGUL SYLLABLE JWAG..HANGUL SYLLABLE JWAH
+C8A9..C8C3    ; LVT # Lo  [27] HANGUL SYLLABLE JWAEG..HANGUL SYLLABLE JWAEH
+C8C5..C8DF    ; LVT # Lo  [27] HANGUL SYLLABLE JOEG..HANGUL SYLLABLE JOEH
+C8E1..C8FB    ; LVT # Lo  [27] HANGUL SYLLABLE JYOG..HANGUL SYLLABLE JYOH
+C8FD..C917    ; LVT # Lo  [27] HANGUL SYLLABLE JUG..HANGUL SYLLABLE JUH
+C919..C933    ; LVT # Lo  [27] HANGUL SYLLABLE JWEOG..HANGUL SYLLABLE JWEOH
+C935..C94F    ; LVT # Lo  [27] HANGUL SYLLABLE JWEG..HANGUL SYLLABLE JWEH
+C951..C96B    ; LVT # Lo  [27] HANGUL SYLLABLE JWIG..HANGUL SYLLABLE JWIH
+C96D..C987    ; LVT # Lo  [27] HANGUL SYLLABLE JYUG..HANGUL SYLLABLE JYUH
+C989..C9A3    ; LVT # Lo  [27] HANGUL SYLLABLE JEUG..HANGUL SYLLABLE JEUH
+C9A5..C9BF    ; LVT # Lo  [27] HANGUL SYLLABLE JYIG..HANGUL SYLLABLE JYIH
+C9C1..C9DB    ; LVT # Lo  [27] HANGUL SYLLABLE JIG..HANGUL SYLLABLE JIH
+C9DD..C9F7    ; LVT # Lo  [27] HANGUL SYLLABLE JJAG..HANGUL SYLLABLE JJAH
+C9F9..CA13    ; LVT # Lo  [27] HANGUL SYLLABLE JJAEG..HANGUL SYLLABLE JJAEH
+CA15..CA2F    ; LVT # Lo  [27] HANGUL SYLLABLE JJYAG..HANGUL SYLLABLE JJYAH
+CA31..CA4B    ; LVT # Lo  [27] HANGUL SYLLABLE JJYAEG..HANGUL SYLLABLE JJYAEH
+CA4D..CA67    ; LVT # Lo  [27] HANGUL SYLLABLE JJEOG..HANGUL SYLLABLE JJEOH
+CA69..CA83    ; LVT # Lo  [27] HANGUL SYLLABLE JJEG..HANGUL SYLLABLE JJEH
+CA85..CA9F    ; LVT # Lo  [27] HANGUL SYLLABLE JJYEOG..HANGUL SYLLABLE JJYEOH
+CAA1..CABB    ; LVT # Lo  [27] HANGUL SYLLABLE JJYEG..HANGUL SYLLABLE JJYEH
+CABD..CAD7    ; LVT # Lo  [27] HANGUL SYLLABLE JJOG..HANGUL SYLLABLE JJOH
+CAD9..CAF3    ; LVT # Lo  [27] HANGUL SYLLABLE JJWAG..HANGUL SYLLABLE JJWAH
+CAF5..CB0F    ; LVT # Lo  [27] HANGUL SYLLABLE JJWAEG..HANGUL SYLLABLE JJWAEH
+CB11..CB2B    ; LVT # Lo  [27] HANGUL SYLLABLE JJOEG..HANGUL SYLLABLE JJOEH
+CB2D..CB47    ; LVT # Lo  [27] HANGUL SYLLABLE JJYOG..HANGUL SYLLABLE JJYOH
+CB49..CB63    ; LVT # Lo  [27] HANGUL SYLLABLE JJUG..HANGUL SYLLABLE JJUH
+CB65..CB7F    ; LVT # Lo  [27] HANGUL SYLLABLE JJWEOG..HANGUL SYLLABLE JJWEOH
+CB81..CB9B    ; LVT # Lo  [27] HANGUL SYLLABLE JJWEG..HANGUL SYLLABLE JJWEH
+CB9D..CBB7    ; LVT # Lo  [27] HANGUL SYLLABLE JJWIG..HANGUL SYLLABLE JJWIH
+CBB9..CBD3    ; LVT # Lo  [27] HANGUL SYLLABLE JJYUG..HANGUL SYLLABLE JJYUH
+CBD5..CBEF    ; LVT # Lo  [27] HANGUL SYLLABLE JJEUG..HANGUL SYLLABLE JJEUH
+CBF1..CC0B    ; LVT # Lo  [27] HANGUL SYLLABLE JJYIG..HANGUL SYLLABLE JJYIH
+CC0D..CC27    ; LVT # Lo  [27] HANGUL SYLLABLE JJIG..HANGUL SYLLABLE JJIH
+CC29..CC43    ; LVT # Lo  [27] HANGUL SYLLABLE CAG..HANGUL SYLLABLE CAH
+CC45..CC5F    ; LVT # Lo  [27] HANGUL SYLLABLE CAEG..HANGUL SYLLABLE CAEH
+CC61..CC7B    ; LVT # Lo  [27] HANGUL SYLLABLE CYAG..HANGUL SYLLABLE CYAH
+CC7D..CC97    ; LVT # Lo  [27] HANGUL SYLLABLE CYAEG..HANGUL SYLLABLE CYAEH
+CC99..CCB3    ; LVT # Lo  [27] HANGUL SYLLABLE CEOG..HANGUL SYLLABLE CEOH
+CCB5..CCCF    ; LVT # Lo  [27] HANGUL SYLLABLE CEG..HANGUL SYLLABLE CEH
+CCD1..CCEB    ; LVT # Lo  [27] HANGUL SYLLABLE CYEOG..HANGUL SYLLABLE CYEOH
+CCED..CD07    ; LVT # Lo  [27] HANGUL SYLLABLE CYEG..HANGUL SYLLABLE CYEH
+CD09..CD23    ; LVT # Lo  [27] HANGUL SYLLABLE COG..HANGUL SYLLABLE COH
+CD25..CD3F    ; LVT # Lo  [27] HANGUL SYLLABLE CWAG..HANGUL SYLLABLE CWAH
+CD41..CD5B    ; LVT # Lo  [27] HANGUL SYLLABLE CWAEG..HANGUL SYLLABLE CWAEH
+CD5D..CD77    ; LVT # Lo  [27] HANGUL SYLLABLE COEG..HANGUL SYLLABLE COEH
+CD79..CD93    ; LVT # Lo  [27] HANGUL SYLLABLE CYOG..HANGUL SYLLABLE CYOH
+CD95..CDAF    ; LVT # Lo  [27] HANGUL SYLLABLE CUG..HANGUL SYLLABLE CUH
+CDB1..CDCB    ; LVT # Lo  [27] HANGUL SYLLABLE CWEOG..HANGUL SYLLABLE CWEOH
+CDCD..CDE7    ; LVT # Lo  [27] HANGUL SYLLABLE CWEG..HANGUL SYLLABLE CWEH
+CDE9..CE03    ; LVT # Lo  [27] HANGUL SYLLABLE CWIG..HANGUL SYLLABLE CWIH
+CE05..CE1F    ; LVT # Lo  [27] HANGUL SYLLABLE CYUG..HANGUL SYLLABLE CYUH
+CE21..CE3B    ; LVT # Lo  [27] HANGUL SYLLABLE CEUG..HANGUL SYLLABLE CEUH
+CE3D..CE57    ; LVT # Lo  [27] HANGUL SYLLABLE CYIG..HANGUL SYLLABLE CYIH
+CE59..CE73    ; LVT # Lo  [27] HANGUL SYLLABLE CIG..HANGUL SYLLABLE CIH
+CE75..CE8F    ; LVT # Lo  [27] HANGUL SYLLABLE KAG..HANGUL SYLLABLE KAH
+CE91..CEAB    ; LVT # Lo  [27] HANGUL SYLLABLE KAEG..HANGUL SYLLABLE KAEH
+CEAD..CEC7    ; LVT # Lo  [27] HANGUL SYLLABLE KYAG..HANGUL SYLLABLE KYAH
+CEC9..CEE3    ; LVT # Lo  [27] HANGUL SYLLABLE KYAEG..HANGUL SYLLABLE KYAEH
+CEE5..CEFF    ; LVT # Lo  [27] HANGUL SYLLABLE KEOG..HANGUL SYLLABLE KEOH
+CF01..CF1B    ; LVT # Lo  [27] HANGUL SYLLABLE KEG..HANGUL SYLLABLE KEH
+CF1D..CF37    ; LVT # Lo  [27] HANGUL SYLLABLE KYEOG..HANGUL SYLLABLE KYEOH
+CF39..CF53    ; LVT # Lo  [27] HANGUL SYLLABLE KYEG..HANGUL SYLLABLE KYEH
+CF55..CF6F    ; LVT # Lo  [27] HANGUL SYLLABLE KOG..HANGUL SYLLABLE KOH
+CF71..CF8B    ; LVT # Lo  [27] HANGUL SYLLABLE KWAG..HANGUL SYLLABLE KWAH
+CF8D..CFA7    ; LVT # Lo  [27] HANGUL SYLLABLE KWAEG..HANGUL SYLLABLE KWAEH
+CFA9..CFC3    ; LVT # Lo  [27] HANGUL SYLLABLE KOEG..HANGUL SYLLABLE KOEH
+CFC5..CFDF    ; LVT # Lo  [27] HANGUL SYLLABLE KYOG..HANGUL SYLLABLE KYOH
+CFE1..CFFB    ; LVT # Lo  [27] HANGUL SYLLABLE KUG..HANGUL SYLLABLE KUH
+CFFD..D017    ; LVT # Lo  [27] HANGUL SYLLABLE KWEOG..HANGUL SYLLABLE KWEOH
+D019..D033    ; LVT # Lo  [27] HANGUL SYLLABLE KWEG..HANGUL SYLLABLE KWEH
+D035..D04F    ; LVT # Lo  [27] HANGUL SYLLABLE KWIG..HANGUL SYLLABLE KWIH
+D051..D06B    ; LVT # Lo  [27] HANGUL SYLLABLE KYUG..HANGUL SYLLABLE KYUH
+D06D..D087    ; LVT # Lo  [27] HANGUL SYLLABLE KEUG..HANGUL SYLLABLE KEUH
+D089..D0A3    ; LVT # Lo  [27] HANGUL SYLLABLE KYIG..HANGUL SYLLABLE KYIH
+D0A5..D0BF    ; LVT # Lo  [27] HANGUL SYLLABLE KIG..HANGUL SYLLABLE KIH
+D0C1..D0DB    ; LVT # Lo  [27] HANGUL SYLLABLE TAG..HANGUL SYLLABLE TAH
+D0DD..D0F7    ; LVT # Lo  [27] HANGUL SYLLABLE TAEG..HANGUL SYLLABLE TAEH
+D0F9..D113    ; LVT # Lo  [27] HANGUL SYLLABLE TYAG..HANGUL SYLLABLE TYAH
+D115..D12F    ; LVT # Lo  [27] HANGUL SYLLABLE TYAEG..HANGUL SYLLABLE TYAEH
+D131..D14B    ; LVT # Lo  [27] HANGUL SYLLABLE TEOG..HANGUL SYLLABLE TEOH
+D14D..D167    ; LVT # Lo  [27] HANGUL SYLLABLE TEG..HANGUL SYLLABLE TEH
+D169..D183    ; LVT # Lo  [27] HANGUL SYLLABLE TYEOG..HANGUL SYLLABLE TYEOH
+D185..D19F    ; LVT # Lo  [27] HANGUL SYLLABLE TYEG..HANGUL SYLLABLE TYEH
+D1A1..D1BB    ; LVT # Lo  [27] HANGUL SYLLABLE TOG..HANGUL SYLLABLE TOH
+D1BD..D1D7    ; LVT # Lo  [27] HANGUL SYLLABLE TWAG..HANGUL SYLLABLE TWAH
+D1D9..D1F3    ; LVT # Lo  [27] HANGUL SYLLABLE TWAEG..HANGUL SYLLABLE TWAEH
+D1F5..D20F    ; LVT # Lo  [27] HANGUL SYLLABLE TOEG..HANGUL SYLLABLE TOEH
+D211..D22B    ; LVT # Lo  [27] HANGUL SYLLABLE TYOG..HANGUL SYLLABLE TYOH
+D22D..D247    ; LVT # Lo  [27] HANGUL SYLLABLE TUG..HANGUL SYLLABLE TUH
+D249..D263    ; LVT # Lo  [27] HANGUL SYLLABLE TWEOG..HANGUL SYLLABLE TWEOH
+D265..D27F    ; LVT # Lo  [27] HANGUL SYLLABLE TWEG..HANGUL SYLLABLE TWEH
+D281..D29B    ; LVT # Lo  [27] HANGUL SYLLABLE TWIG..HANGUL SYLLABLE TWIH
+D29D..D2B7    ; LVT # Lo  [27] HANGUL SYLLABLE TYUG..HANGUL SYLLABLE TYUH
+D2B9..D2D3    ; LVT # Lo  [27] HANGUL SYLLABLE TEUG..HANGUL SYLLABLE TEUH
+D2D5..D2EF    ; LVT # Lo  [27] HANGUL SYLLABLE TYIG..HANGUL SYLLABLE TYIH
+D2F1..D30B    ; LVT # Lo  [27] HANGUL SYLLABLE TIG..HANGUL SYLLABLE TIH
+D30D..D327    ; LVT # Lo  [27] HANGUL SYLLABLE PAG..HANGUL SYLLABLE PAH
+D329..D343    ; LVT # Lo  [27] HANGUL SYLLABLE PAEG..HANGUL SYLLABLE PAEH
+D345..D35F    ; LVT # Lo  [27] HANGUL SYLLABLE PYAG..HANGUL SYLLABLE PYAH
+D361..D37B    ; LVT # Lo  [27] HANGUL SYLLABLE PYAEG..HANGUL SYLLABLE PYAEH
+D37D..D397    ; LVT # Lo  [27] HANGUL SYLLABLE PEOG..HANGUL SYLLABLE PEOH
+D399..D3B3    ; LVT # Lo  [27] HANGUL SYLLABLE PEG..HANGUL SYLLABLE PEH
+D3B5..D3CF    ; LVT # Lo  [27] HANGUL SYLLABLE PYEOG..HANGUL SYLLABLE PYEOH
+D3D1..D3EB    ; LVT # Lo  [27] HANGUL SYLLABLE PYEG..HANGUL SYLLABLE PYEH
+D3ED..D407    ; LVT # Lo  [27] HANGUL SYLLABLE POG..HANGUL SYLLABLE POH
+D409..D423    ; LVT # Lo  [27] HANGUL SYLLABLE PWAG..HANGUL SYLLABLE PWAH
+D425..D43F    ; LVT # Lo  [27] HANGUL SYLLABLE PWAEG..HANGUL SYLLABLE PWAEH
+D441..D45B    ; LVT # Lo  [27] HANGUL SYLLABLE POEG..HANGUL SYLLABLE POEH
+D45D..D477    ; LVT # Lo  [27] HANGUL SYLLABLE PYOG..HANGUL SYLLABLE PYOH
+D479..D493    ; LVT # Lo  [27] HANGUL SYLLABLE PUG..HANGUL SYLLABLE PUH
+D495..D4AF    ; LVT # Lo  [27] HANGUL SYLLABLE PWEOG..HANGUL SYLLABLE PWEOH
+D4B1..D4CB    ; LVT # Lo  [27] HANGUL SYLLABLE PWEG..HANGUL SYLLABLE PWEH
+D4CD..D4E7    ; LVT # Lo  [27] HANGUL SYLLABLE PWIG..HANGUL SYLLABLE PWIH
+D4E9..D503    ; LVT # Lo  [27] HANGUL SYLLABLE PYUG..HANGUL SYLLABLE PYUH
+D505..D51F    ; LVT # Lo  [27] HANGUL SYLLABLE PEUG..HANGUL SYLLABLE PEUH
+D521..D53B    ; LVT # Lo  [27] HANGUL SYLLABLE PYIG..HANGUL SYLLABLE PYIH
+D53D..D557    ; LVT # Lo  [27] HANGUL SYLLABLE PIG..HANGUL SYLLABLE PIH
+D559..D573    ; LVT # Lo  [27] HANGUL SYLLABLE HAG..HANGUL SYLLABLE HAH
+D575..D58F    ; LVT # Lo  [27] HANGUL SYLLABLE HAEG..HANGUL SYLLABLE HAEH
+D591..D5AB    ; LVT # Lo  [27] HANGUL SYLLABLE HYAG..HANGUL SYLLABLE HYAH
+D5AD..D5C7    ; LVT # Lo  [27] HANGUL SYLLABLE HYAEG..HANGUL SYLLABLE HYAEH
+D5C9..D5E3    ; LVT # Lo  [27] HANGUL SYLLABLE HEOG..HANGUL SYLLABLE HEOH
+D5E5..D5FF    ; LVT # Lo  [27] HANGUL SYLLABLE HEG..HANGUL SYLLABLE HEH
+D601..D61B    ; LVT # Lo  [27] HANGUL SYLLABLE HYEOG..HANGUL SYLLABLE HYEOH
+D61D..D637    ; LVT # Lo  [27] HANGUL SYLLABLE HYEG..HANGUL SYLLABLE HYEH
+D639..D653    ; LVT # Lo  [27] HANGUL SYLLABLE HOG..HANGUL SYLLABLE HOH
+D655..D66F    ; LVT # Lo  [27] HANGUL SYLLABLE HWAG..HANGUL SYLLABLE HWAH
+D671..D68B    ; LVT # Lo  [27] HANGUL SYLLABLE HWAEG..HANGUL SYLLABLE HWAEH
+D68D..D6A7    ; LVT # Lo  [27] HANGUL SYLLABLE HOEG..HANGUL SYLLABLE HOEH
+D6A9..D6C3    ; LVT # Lo  [27] HANGUL SYLLABLE HYOG..HANGUL SYLLABLE HYOH
+D6C5..D6DF    ; LVT # Lo  [27] HANGUL SYLLABLE HUG..HANGUL SYLLABLE HUH
+D6E1..D6FB    ; LVT # Lo  [27] HANGUL SYLLABLE HWEOG..HANGUL SYLLABLE HWEOH
+D6FD..D717    ; LVT # Lo  [27] HANGUL SYLLABLE HWEG..HANGUL SYLLABLE HWEH
+D719..D733    ; LVT # Lo  [27] HANGUL SYLLABLE HWIG..HANGUL SYLLABLE HWIH
+D735..D74F    ; LVT # Lo  [27] HANGUL SYLLABLE HYUG..HANGUL SYLLABLE HYUH
+D751..D76B    ; LVT # Lo  [27] HANGUL SYLLABLE HEUG..HANGUL SYLLABLE HEUH
+D76D..D787    ; LVT # Lo  [27] HANGUL SYLLABLE HYIG..HANGUL SYLLABLE HYIH
+D789..D7A3    ; LVT # Lo  [27] HANGUL SYLLABLE HIG..HANGUL SYLLABLE HIH
+
+# Total code points: 10773
+
+# ================================================
+
+200D          ; ZWJ # Cf       ZERO WIDTH JOINER
+
+# Total code points: 1
+
+# EOF
diff --git a/app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakTest.txt b/app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakTest.txt
new file mode 100644
index 0000000..3c73f97
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/data/unicode/GraphemeBreakTest.txt
@@ -0,0 +1,630 @@
+# GraphemeBreakTest-15.0.0.txt
+# Date: 2022-02-26, 00:38:37 GMT
+# © 2022 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+#
+# Unicode Character Database
+#   For documentation, see https://www.unicode.org/reports/tr44/
+#
+# Default Grapheme_Cluster_Break Test
+#
+# Format:
+# <string> (# <comment>)?
+#  <string> contains hex Unicode code points, with
+#	÷ wherever there is a break opportunity, and
+#	× wherever there is not.
+#  <comment> the format can change, but currently it shows:
+#	- the sample character name
+#	- (x) the Grapheme_Cluster_Break property value for the sample character
+#	- [x] the rule that determines whether there is a break or not,
+#	   as listed in the Rules section of GraphemeBreakTest.html
+#
+# These samples may be extended or changed in the future.
+#
+÷ 0020 ÷ 0020 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0020 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0020 ÷ 000D ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0020 × 0308 ÷ 000D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0020 ÷ 000A ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0020 × 0308 ÷ 000A ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0020 ÷ 0001 ÷	#  ÷ [0.2] SPACE (Other) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0001 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0020 × 034F ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0020 × 0308 × 034F ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0020 ÷ 1F1E6 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0020 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0020 ÷ 0600 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0600 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0020 × 0903 ÷	#  ÷ [0.2] SPACE (Other) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0020 × 0308 × 0903 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0020 ÷ 1100 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0020 × 0308 ÷ 1100 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0020 ÷ 1160 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0020 × 0308 ÷ 1160 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0020 ÷ 11A8 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0020 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0020 ÷ AC00 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0020 × 0308 ÷ AC00 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0020 ÷ AC01 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0020 × 0308 ÷ AC01 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0020 ÷ 231A ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0020 × 0308 ÷ 231A ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0020 × 0300 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 0308 × 0300 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 200D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 0308 × 200D ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0020 ÷ 0378 ÷	#  ÷ [0.2] SPACE (Other) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0020 × 0308 ÷ 0378 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000D ÷ 0020 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] SPACE (Other) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 000D ÷ 000D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 000D × 000A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) × [3.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 000D ÷ 0001 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 000D ÷ 034F ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000D ÷ 0308 × 034F ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000D ÷ 1F1E6 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 000D ÷ 0600 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 000D ÷ 0903 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 000D ÷ 0308 × 0903 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 000D ÷ 1100 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 000D ÷ 1160 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 000D ÷ 11A8 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 000D ÷ AC00 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 000D ÷ AC01 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 000D ÷ 231A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000D ÷ 0300 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 0308 × 0300 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 200D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 0308 × 200D ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 000D ÷ 0378 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000D ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000A ÷ 0020 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] SPACE (Other) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 000A ÷ 000D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 000A ÷ 000A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 000A ÷ 0001 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 000A ÷ 034F ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000A ÷ 0308 × 034F ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 000A ÷ 1F1E6 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 000A ÷ 0600 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 000A ÷ 0903 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 000A ÷ 0308 × 0903 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 000A ÷ 1100 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 000A ÷ 1160 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 000A ÷ 11A8 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 000A ÷ AC00 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 000A ÷ AC01 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 000A ÷ 231A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 000A ÷ 0300 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 0308 × 0300 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 200D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 0308 × 200D ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 000A ÷ 0378 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000A ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0001 ÷ 0020 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] SPACE (Other) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0020 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0001 ÷ 000D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 000D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0001 ÷ 000A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 000A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0001 ÷ 0001 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0001 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0001 ÷ 034F ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0001 ÷ 0308 × 034F ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0001 ÷ 1F1E6 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0001 ÷ 0600 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0600 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0001 ÷ 0903 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0001 ÷ 0308 × 0903 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0001 ÷ 1100 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 1100 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0001 ÷ 1160 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 1160 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0001 ÷ 11A8 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 11A8 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0001 ÷ AC00 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ AC00 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0001 ÷ AC01 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ AC01 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0001 ÷ 231A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 231A ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0001 ÷ 0300 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 0308 × 0300 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 200D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 0308 × 200D ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0001 ÷ 0378 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0001 ÷ 0308 ÷ 0378 ÷	#  ÷ [0.2] <START OF HEADING> (Control) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 034F ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 034F × 0308 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 034F ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 034F × 0308 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 034F ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 034F × 0308 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 034F ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 034F × 0308 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 034F × 034F ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 034F × 0308 × 034F ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 034F ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 034F × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 034F ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 034F × 0308 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 034F × 0903 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 034F × 0308 × 0903 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 034F ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 034F × 0308 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 034F ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 034F × 0308 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 034F ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 034F × 0308 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 034F ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 034F × 0308 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 034F ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 034F × 0308 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 034F ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 034F × 0308 ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 034F × 0300 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 034F × 0308 × 0300 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 034F × 200D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 034F × 0308 × 200D ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 034F ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 034F × 0308 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAPHEME JOINER (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1F1E6 ÷ 0020 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0020 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1F1E6 ÷ 000D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 000D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1F1E6 ÷ 000A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 000A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1F1E6 ÷ 0001 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0001 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1F1E6 × 034F ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1F1E6 × 0308 × 034F ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1F1E6 × 1F1E6 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [12.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1F1E6 ÷ 0600 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0600 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1F1E6 × 0903 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1F1E6 × 0308 × 0903 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1F1E6 ÷ 1100 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 1100 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1F1E6 ÷ 1160 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 1160 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1F1E6 ÷ 11A8 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1F1E6 ÷ AC00 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ AC00 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1F1E6 ÷ AC01 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ AC01 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1F1E6 ÷ 231A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 231A ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1F1E6 × 0300 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 × 0308 × 0300 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 × 200D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 × 0308 × 200D ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1F1E6 ÷ 0378 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1F1E6 × 0308 ÷ 0378 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0600 × 0020 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] SPACE (Other) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0020 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0600 ÷ 000D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0600 × 0308 ÷ 000D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0600 ÷ 000A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0600 × 0308 ÷ 000A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0600 ÷ 0001 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0001 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0600 × 034F ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0600 × 0308 × 034F ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0600 × 1F1E6 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0600 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0600 × 0600 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0600 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0600 × 0903 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0600 × 0308 × 0903 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0600 × 1100 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0600 × 0308 ÷ 1100 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0600 × 1160 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0600 × 0308 ÷ 1160 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0600 × 11A8 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0600 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0600 × AC00 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0600 × 0308 ÷ AC00 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0600 × AC01 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0600 × 0308 ÷ AC01 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0600 × 231A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] WATCH (ExtPict) ÷ [0.3]
+÷ 0600 × 0308 ÷ 231A ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0600 × 0300 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 0308 × 0300 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 200D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 0308 × 200D ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0600 × 0378 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.2] <reserved-0378> (Other) ÷ [0.3]
+÷ 0600 × 0308 ÷ 0378 ÷	#  ÷ [0.2] ARABIC NUMBER SIGN (Prepend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0903 ÷ 0020 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0020 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0903 ÷ 000D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0903 × 0308 ÷ 000D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0903 ÷ 000A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0903 × 0308 ÷ 000A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0903 ÷ 0001 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0001 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0903 × 034F ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0903 × 0308 × 034F ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0903 ÷ 1F1E6 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0903 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0903 ÷ 0600 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0600 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0903 × 0903 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0903 × 0308 × 0903 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0903 ÷ 1100 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0903 × 0308 ÷ 1100 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0903 ÷ 1160 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0903 × 0308 ÷ 1160 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0903 ÷ 11A8 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0903 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0903 ÷ AC00 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0903 × 0308 ÷ AC00 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0903 ÷ AC01 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0903 × 0308 ÷ AC01 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0903 ÷ 231A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0903 × 0308 ÷ 231A ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0903 × 0300 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0903 × 0308 × 0300 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0903 × 200D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0903 × 0308 × 200D ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0903 ÷ 0378 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0903 × 0308 ÷ 0378 ÷	#  ÷ [0.2] DEVANAGARI SIGN VISARGA (SpacingMark) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1100 ÷ 0020 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1100 ÷ 000D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1100 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1100 ÷ 000A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1100 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1100 ÷ 0001 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1100 × 034F ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1100 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1100 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1100 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1100 ÷ 0600 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1100 × 0903 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1100 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1100 × 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1100 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1100 × 1160 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1100 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1100 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1100 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1100 × AC00 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1100 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1100 × AC01 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1100 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1100 ÷ 231A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1100 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1100 × 0300 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1100 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1100 × 200D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1100 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1100 ÷ 0378 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1100 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1160 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1160 ÷ 000D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1160 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 1160 ÷ 000A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1160 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 1160 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 1160 × 034F ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1160 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 1160 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1160 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 1160 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 1160 × 0903 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1160 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 1160 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1160 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1160 × 1160 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [7.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1160 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 1160 × 11A8 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [7.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1160 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 1160 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1160 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 1160 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1160 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 1160 ÷ 231A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1160 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 1160 × 0300 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1160 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 1160 × 200D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1160 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 1160 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 1160 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JUNGSEONG FILLER (V) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 11A8 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 11A8 ÷ 000D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 11A8 ÷ 000A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 11A8 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 11A8 × 034F ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 11A8 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 11A8 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 11A8 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 11A8 × 0903 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 11A8 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 11A8 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 11A8 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 11A8 × 11A8 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [8.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 11A8 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 11A8 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 11A8 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 11A8 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 11A8 ÷ 231A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 11A8 × 0300 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 11A8 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 11A8 × 200D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 11A8 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 11A8 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 11A8 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL JONGSEONG KIYEOK (T) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ AC00 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ AC00 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ AC00 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ AC00 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ AC00 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ AC00 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ AC00 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC00 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC00 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ AC00 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ AC00 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ AC00 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ AC00 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ AC00 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC00 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC00 × 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [7.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ AC00 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ AC00 × 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [7.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ AC00 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ AC00 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ AC00 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ AC00 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ AC00 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ AC00 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC00 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC00 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC00 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC00 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ AC00 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ AC00 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ AC00 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ AC01 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0020 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ AC01 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ AC01 × 0308 ÷ 000D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ AC01 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ AC01 × 0308 ÷ 000A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ AC01 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0001 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ AC01 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC01 × 0308 × 034F ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ AC01 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ AC01 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ AC01 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0600 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ AC01 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ AC01 × 0308 × 0903 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ AC01 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC01 × 0308 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC01 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ AC01 × 0308 ÷ 1160 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ AC01 × 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [8.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ AC01 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ AC01 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ AC01 × 0308 ÷ AC00 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ AC01 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ AC01 × 0308 ÷ AC01 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ AC01 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC01 × 0308 ÷ 231A ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ AC01 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC01 × 0308 × 0300 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ AC01 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ AC01 × 0308 × 200D ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ AC01 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ AC01 × 0308 ÷ 0378 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 231A ÷ 0020 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 231A × 0308 ÷ 0020 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 231A ÷ 000D ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 231A × 0308 ÷ 000D ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 231A ÷ 000A ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 231A × 0308 ÷ 000A ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 231A ÷ 0001 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 231A × 0308 ÷ 0001 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 231A × 034F ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 231A × 0308 × 034F ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 231A ÷ 1F1E6 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 231A × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 231A ÷ 0600 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 231A × 0308 ÷ 0600 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 231A × 0903 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 231A × 0308 × 0903 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 231A ÷ 1100 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 231A × 0308 ÷ 1100 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 231A ÷ 1160 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 231A × 0308 ÷ 1160 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 231A ÷ 11A8 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 231A × 0308 ÷ 11A8 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 231A ÷ AC00 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 231A × 0308 ÷ AC00 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 231A ÷ AC01 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 231A × 0308 ÷ AC01 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 231A ÷ 231A ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 231A × 0308 ÷ 231A ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 231A × 0300 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 231A × 0308 × 0300 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 231A × 200D ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 231A × 0308 × 200D ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 231A ÷ 0378 ÷	#  ÷ [0.2] WATCH (ExtPict) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 231A × 0308 ÷ 0378 ÷	#  ÷ [0.2] WATCH (ExtPict) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0300 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0020 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0300 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0300 × 0308 ÷ 000D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0300 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0300 × 0308 ÷ 000A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0300 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0001 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0300 × 034F ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0300 × 0308 × 034F ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0300 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0300 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0300 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0600 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0300 × 0903 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0300 × 0308 × 0903 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0300 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0300 × 0308 ÷ 1100 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0300 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0300 × 0308 ÷ 1160 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0300 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0300 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0300 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0300 × 0308 ÷ AC00 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0300 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0300 × 0308 ÷ AC01 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0300 ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0300 × 0308 ÷ 231A ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0300 × 0300 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0300 × 0308 × 0300 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0300 × 200D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0300 × 0308 × 200D ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0300 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0300 × 0308 ÷ 0378 ÷	#  ÷ [0.2] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 200D ÷ 0020 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 200D × 0308 ÷ 0020 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 200D ÷ 000D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 200D × 0308 ÷ 000D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 200D ÷ 000A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 200D × 0308 ÷ 000A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 200D ÷ 0001 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 200D × 0308 ÷ 0001 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 200D × 034F ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 200D × 0308 × 034F ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 200D ÷ 1F1E6 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 200D × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 200D ÷ 0600 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 200D × 0308 ÷ 0600 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 200D × 0903 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 200D × 0308 × 0903 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 200D ÷ 1100 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 200D × 0308 ÷ 1100 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 200D ÷ 1160 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 200D × 0308 ÷ 1160 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 200D ÷ 11A8 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 200D × 0308 ÷ 11A8 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 200D ÷ AC00 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 200D × 0308 ÷ AC00 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 200D ÷ AC01 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 200D × 0308 ÷ AC01 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 200D ÷ 231A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 200D × 0308 ÷ 231A ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 200D × 0300 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 200D × 0308 × 0300 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 200D × 200D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 200D × 0308 × 200D ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 200D ÷ 0378 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 200D × 0308 ÷ 0378 ÷	#  ÷ [0.2] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0378 ÷ 0020 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0020 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 0378 ÷ 000D ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0378 × 0308 ÷ 000D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <CARRIAGE RETURN (CR)> (CR) ÷ [0.3]
+÷ 0378 ÷ 000A ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0378 × 0308 ÷ 000A ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [0.3]
+÷ 0378 ÷ 0001 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0001 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [5.0] <START OF HEADING> (Control) ÷ [0.3]
+÷ 0378 × 034F ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0378 × 0308 × 034F ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAPHEME JOINER (Extend) ÷ [0.3]
+÷ 0378 ÷ 1F1E6 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0378 × 0308 ÷ 1F1E6 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) ÷ [0.3]
+÷ 0378 ÷ 0600 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0600 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) ÷ [0.3]
+÷ 0378 × 0903 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0378 × 0308 × 0903 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [0.3]
+÷ 0378 ÷ 1100 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0378 × 0308 ÷ 1100 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 0378 ÷ 1160 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0378 × 0308 ÷ 1160 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JUNGSEONG FILLER (V) ÷ [0.3]
+÷ 0378 ÷ 11A8 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0378 × 0308 ÷ 11A8 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL JONGSEONG KIYEOK (T) ÷ [0.3]
+÷ 0378 ÷ AC00 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0378 × 0308 ÷ AC00 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GA (LV) ÷ [0.3]
+÷ 0378 ÷ AC01 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0378 × 0308 ÷ AC01 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] HANGUL SYLLABLE GAG (LVT) ÷ [0.3]
+÷ 0378 ÷ 231A ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0378 × 0308 ÷ 231A ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] WATCH (ExtPict) ÷ [0.3]
+÷ 0378 × 0300 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0378 × 0308 × 0300 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] COMBINING GRAVE ACCENT (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0378 × 200D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0378 × 0308 × 200D ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0378 ÷ 0378 ÷	#  ÷ [0.2] <reserved-0378> (Other) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 0378 × 0308 ÷ 0378 ÷	#  ÷ [0.2] <reserved-0378> (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] <reserved-0378> (Other) ÷ [0.3]
+÷ 000D × 000A ÷ 0061 ÷ 000A ÷ 0308 ÷	#  ÷ [0.2] <CARRIAGE RETURN (CR)> (CR) × [3.0] <LINE FEED (LF)> (LF) ÷ [4.0] LATIN SMALL LETTER A (Other) ÷ [5.0] <LINE FEED (LF)> (LF) ÷ [4.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0061 × 0308 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [0.3]
+÷ 0020 × 200D ÷ 0646 ÷	#  ÷ [0.2] SPACE (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] ARABIC LETTER NOON (Other) ÷ [0.3]
+÷ 0646 × 200D ÷ 0020 ÷	#  ÷ [0.2] ARABIC LETTER NOON (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] SPACE (Other) ÷ [0.3]
+÷ 1100 × 1100 ÷	#  ÷ [0.2] HANGUL CHOSEONG KIYEOK (L) × [6.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC00 × 11A8 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GA (LV) × [7.0] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ AC01 × 11A8 ÷ 1100 ÷	#  ÷ [0.2] HANGUL SYLLABLE GAG (LVT) × [8.0] HANGUL JONGSEONG KIYEOK (T) ÷ [999.0] HANGUL CHOSEONG KIYEOK (L) ÷ [0.3]
+÷ 1F1E6 × 1F1E7 ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [12.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 1F1E6 × 1F1E7 ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 1F1E6 × 1F1E7 × 200D ÷ 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 1F1E6 × 200D ÷ 1F1E7 × 1F1E8 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 1F1E6 × 1F1E7 ÷ 1F1E8 × 1F1E9 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER A (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER B (RI) ÷ [999.0] REGIONAL INDICATOR SYMBOL LETTER C (RI) × [13.0] REGIONAL INDICATOR SYMBOL LETTER D (RI) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 × 200D ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [0.3]
+÷ 0061 × 0308 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 × 0903 ÷ 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.1] DEVANAGARI SIGN VISARGA (SpacingMark) ÷ [999.0] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 0061 ÷ 0600 × 0062 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) ÷ [999.0] ARABIC NUMBER SIGN (Prepend) × [9.2] LATIN SMALL LETTER B (Other) ÷ [0.3]
+÷ 1F476 × 1F3FF ÷ 1F476 ÷	#  ÷ [0.2] BABY (ExtPict) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [999.0] BABY (ExtPict) ÷ [0.3]
+÷ 0061 × 1F3FF ÷ 1F476 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [999.0] BABY (ExtPict) ÷ [0.3]
+÷ 0061 × 1F3FF ÷ 1F476 × 200D × 1F6D1 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [999.0] BABY (ExtPict) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] OCTAGONAL SIGN (ExtPict) ÷ [0.3]
+÷ 1F476 × 1F3FF × 0308 × 200D × 1F476 × 1F3FF ÷	#  ÷ [0.2] BABY (ExtPict) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) × [9.0] COMBINING DIAERESIS (Extend_ExtCccZwj) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] BABY (ExtPict) × [9.0] EMOJI MODIFIER FITZPATRICK TYPE-6 (Extend) ÷ [0.3]
+÷ 1F6D1 × 200D × 1F6D1 ÷	#  ÷ [0.2] OCTAGONAL SIGN (ExtPict) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] OCTAGONAL SIGN (ExtPict) ÷ [0.3]
+÷ 0061 × 200D ÷ 1F6D1 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] OCTAGONAL SIGN (ExtPict) ÷ [0.3]
+÷ 2701 × 200D × 2701 ÷	#  ÷ [0.2] UPPER BLADE SCISSORS (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) × [11.0] UPPER BLADE SCISSORS (Other) ÷ [0.3]
+÷ 0061 × 200D ÷ 2701 ÷	#  ÷ [0.2] LATIN SMALL LETTER A (Other) × [9.0] ZERO WIDTH JOINER (ZWJ_ExtCccZwj) ÷ [999.0] UPPER BLADE SCISSORS (Other) ÷ [0.3]
+#
+# Lines: 602
+#
+# EOF
diff --git a/app/src/main/cpp/libcxx/utils/data/unicode/README.txt b/app/src/main/cpp/libcxx/utils/data/unicode/README.txt
new file mode 100644
index 0000000..09d1769
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/data/unicode/README.txt
@@ -0,0 +1,34 @@
+Contains various Unicode data files used in the library for Unicode support
+
+To update all files to the last published Unicode version issue the following
+command in the directory containing this file.
+
+wget \
+    https://www.unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt \
+    https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt \
+    https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakTest.txt \
+    https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt \
+    https://www.unicode.org/Public/UCD/latest/ucd/extracted/DerivedGeneralCategory.txt
+
+Afterwards build the `libcxx-generate-files` target to update the generated
+Unicode files.
+
+GraphemeBreakProperty.txt
+Source: https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt
+Usage:  libcxx/utils/generate_extended_grapheme_cluster_table.py
+
+emoji-data.txt
+Source: https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt
+Usage:  libcxx/utils/generate_extended_grapheme_cluster_table.py
+
+GraphemeBreakTest.txt
+Source: https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakTest.txt
+Usage:  libcxx/utils/generate_extended_grapheme_cluster_test.py
+
+DerivedCoreProperties.txt
+Source: https://www.unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt
+Usage: libcxx/utils/generate_escaped_output_table.py
+
+DerivedGeneralCategory.txt
+Source: https://www.unicode.org/Public/UCD/latest/ucd/extracted/DerivedGeneralCategory.txt
+Usage: libcxx/utils/generate_escaped_output_table.py
diff --git a/app/src/main/cpp/libcxx/utils/data/unicode/emoji-data.txt b/app/src/main/cpp/libcxx/utils/data/unicode/emoji-data.txt
new file mode 100644
index 0000000..999a436
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/data/unicode/emoji-data.txt
@@ -0,0 +1,1320 @@
+# emoji-data.txt
+# Date: 2022-08-02, 00:26:10 GMT
+# © 2022 Unicode®, Inc.
+# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
+# For terms of use, see https://www.unicode.org/terms_of_use.html
+#
+# Emoji Data for UTS #51
+# Used with Emoji Version 15.0 and subsequent minor revisions (if any)
+#
+# For documentation and usage, see https://www.unicode.org/reports/tr51
+#
+# Format: 
+# <codepoint(s)> ; <property> # <comments> 
+# Note: there is no guarantee as to the structure of whitespace or comments
+#
+# Characters and sequences are listed in code point order. Users should be shown a more natural order.
+# See the CLDR collation order for Emoji.
+
+
+# ================================================
+
+# All omitted code points have Emoji=No
+
+0023          ; Emoji                # E0.0   [1] (#️)       hash sign
+002A          ; Emoji                # E0.0   [1] (*️)       asterisk
+0030..0039    ; Emoji                # E0.0  [10] (0️..9️)    digit zero..digit nine
+00A9          ; Emoji                # E0.6   [1] (©️)       copyright
+00AE          ; Emoji                # E0.6   [1] (®️)       registered
+203C          ; Emoji                # E0.6   [1] (‼️)       double exclamation mark
+2049          ; Emoji                # E0.6   [1] (⁉️)       exclamation question mark
+2122          ; Emoji                # E0.6   [1] (™️)       trade mark
+2139          ; Emoji                # E0.6   [1] (ℹ️)       information
+2194..2199    ; Emoji                # E0.6   [6] (↔️..↙️)    left-right arrow..down-left arrow
+21A9..21AA    ; Emoji                # E0.6   [2] (↩️..↪️)    right arrow curving left..left arrow curving right
+231A..231B    ; Emoji                # E0.6   [2] (⌚..⌛)    watch..hourglass done
+2328          ; Emoji                # E1.0   [1] (⌨️)       keyboard
+23CF          ; Emoji                # E1.0   [1] (⏏️)       eject button
+23E9..23EC    ; Emoji                # E0.6   [4] (⏩..⏬)    fast-forward button..fast down button
+23ED..23EE    ; Emoji                # E0.7   [2] (⏭️..⏮️)    next track button..last track button
+23EF          ; Emoji                # E1.0   [1] (⏯️)       play or pause button
+23F0          ; Emoji                # E0.6   [1] (⏰)       alarm clock
+23F1..23F2    ; Emoji                # E1.0   [2] (⏱️..⏲️)    stopwatch..timer clock
+23F3          ; Emoji                # E0.6   [1] (⏳)       hourglass not done
+23F8..23FA    ; Emoji                # E0.7   [3] (⏸️..⏺️)    pause button..record button
+24C2          ; Emoji                # E0.6   [1] (Ⓜ️)       circled M
+25AA..25AB    ; Emoji                # E0.6   [2] (▪️..▫️)    black small square..white small square
+25B6          ; Emoji                # E0.6   [1] (▶️)       play button
+25C0          ; Emoji                # E0.6   [1] (◀️)       reverse button
+25FB..25FE    ; Emoji                # E0.6   [4] (◻️..◾)    white medium square..black medium-small square
+2600..2601    ; Emoji                # E0.6   [2] (☀️..☁️)    sun..cloud
+2602..2603    ; Emoji                # E0.7   [2] (☂️..☃️)    umbrella..snowman
+2604          ; Emoji                # E1.0   [1] (☄️)       comet
+260E          ; Emoji                # E0.6   [1] (☎️)       telephone
+2611          ; Emoji                # E0.6   [1] (☑️)       check box with check
+2614..2615    ; Emoji                # E0.6   [2] (☔..☕)    umbrella with rain drops..hot beverage
+2618          ; Emoji                # E1.0   [1] (☘️)       shamrock
+261D          ; Emoji                # E0.6   [1] (☝️)       index pointing up
+2620          ; Emoji                # E1.0   [1] (☠️)       skull and crossbones
+2622..2623    ; Emoji                # E1.0   [2] (☢️..☣️)    radioactive..biohazard
+2626          ; Emoji                # E1.0   [1] (☦️)       orthodox cross
+262A          ; Emoji                # E0.7   [1] (☪️)       star and crescent
+262E          ; Emoji                # E1.0   [1] (☮️)       peace symbol
+262F          ; Emoji                # E0.7   [1] (☯️)       yin yang
+2638..2639    ; Emoji                # E0.7   [2] (☸️..☹️)    wheel of dharma..frowning face
+263A          ; Emoji                # E0.6   [1] (☺️)       smiling face
+2640          ; Emoji                # E4.0   [1] (♀️)       female sign
+2642          ; Emoji                # E4.0   [1] (♂️)       male sign
+2648..2653    ; Emoji                # E0.6  [12] (♈..♓)    Aries..Pisces
+265F          ; Emoji                # E11.0  [1] (♟️)       chess pawn
+2660          ; Emoji                # E0.6   [1] (♠️)       spade suit
+2663          ; Emoji                # E0.6   [1] (♣️)       club suit
+2665..2666    ; Emoji                # E0.6   [2] (♥️..♦️)    heart suit..diamond suit
+2668          ; Emoji                # E0.6   [1] (♨️)       hot springs
+267B          ; Emoji                # E0.6   [1] (♻️)       recycling symbol
+267E          ; Emoji                # E11.0  [1] (♾️)       infinity
+267F          ; Emoji                # E0.6   [1] (♿)       wheelchair symbol
+2692          ; Emoji                # E1.0   [1] (⚒️)       hammer and pick
+2693          ; Emoji                # E0.6   [1] (⚓)       anchor
+2694          ; Emoji                # E1.0   [1] (⚔️)       crossed swords
+2695          ; Emoji                # E4.0   [1] (⚕️)       medical symbol
+2696..2697    ; Emoji                # E1.0   [2] (⚖️..⚗️)    balance scale..alembic
+2699          ; Emoji                # E1.0   [1] (⚙️)       gear
+269B..269C    ; Emoji                # E1.0   [2] (⚛️..⚜️)    atom symbol..fleur-de-lis
+26A0..26A1    ; Emoji                # E0.6   [2] (⚠️..⚡)    warning..high voltage
+26A7          ; Emoji                # E13.0  [1] (⚧️)       transgender symbol
+26AA..26AB    ; Emoji                # E0.6   [2] (⚪..⚫)    white circle..black circle
+26B0..26B1    ; Emoji                # E1.0   [2] (⚰️..⚱️)    coffin..funeral urn
+26BD..26BE    ; Emoji                # E0.6   [2] (⚽..⚾)    soccer ball..baseball
+26C4..26C5    ; Emoji                # E0.6   [2] (⛄..⛅)    snowman without snow..sun behind cloud
+26C8          ; Emoji                # E0.7   [1] (⛈️)       cloud with lightning and rain
+26CE          ; Emoji                # E0.6   [1] (⛎)       Ophiuchus
+26CF          ; Emoji                # E0.7   [1] (⛏️)       pick
+26D1          ; Emoji                # E0.7   [1] (⛑️)       rescue worker’s helmet
+26D3          ; Emoji                # E0.7   [1] (⛓️)       chains
+26D4          ; Emoji                # E0.6   [1] (⛔)       no entry
+26E9          ; Emoji                # E0.7   [1] (⛩️)       shinto shrine
+26EA          ; Emoji                # E0.6   [1] (⛪)       church
+26F0..26F1    ; Emoji                # E0.7   [2] (⛰️..⛱️)    mountain..umbrella on ground
+26F2..26F3    ; Emoji                # E0.6   [2] (⛲..⛳)    fountain..flag in hole
+26F4          ; Emoji                # E0.7   [1] (⛴️)       ferry
+26F5          ; Emoji                # E0.6   [1] (⛵)       sailboat
+26F7..26F9    ; Emoji                # E0.7   [3] (⛷️..⛹️)    skier..person bouncing ball
+26FA          ; Emoji                # E0.6   [1] (⛺)       tent
+26FD          ; Emoji                # E0.6   [1] (⛽)       fuel pump
+2702          ; Emoji                # E0.6   [1] (✂️)       scissors
+2705          ; Emoji                # E0.6   [1] (✅)       check mark button
+2708..270C    ; Emoji                # E0.6   [5] (✈️..✌️)    airplane..victory hand
+270D          ; Emoji                # E0.7   [1] (✍️)       writing hand
+270F          ; Emoji                # E0.6   [1] (✏️)       pencil
+2712          ; Emoji                # E0.6   [1] (✒️)       black nib
+2714          ; Emoji                # E0.6   [1] (✔️)       check mark
+2716          ; Emoji                # E0.6   [1] (✖️)       multiply
+271D          ; Emoji                # E0.7   [1] (✝️)       latin cross
+2721          ; Emoji                # E0.7   [1] (✡️)       star of David
+2728          ; Emoji                # E0.6   [1] (✨)       sparkles
+2733..2734    ; Emoji                # E0.6   [2] (✳️..✴️)    eight-spoked asterisk..eight-pointed star
+2744          ; Emoji                # E0.6   [1] (❄️)       snowflake
+2747          ; Emoji                # E0.6   [1] (❇️)       sparkle
+274C          ; Emoji                # E0.6   [1] (❌)       cross mark
+274E          ; Emoji                # E0.6   [1] (❎)       cross mark button
+2753..2755    ; Emoji                # E0.6   [3] (❓..❕)    red question mark..white exclamation mark
+2757          ; Emoji                # E0.6   [1] (❗)       red exclamation mark
+2763          ; Emoji                # E1.0   [1] (❣️)       heart exclamation
+2764          ; Emoji                # E0.6   [1] (❤️)       red heart
+2795..2797    ; Emoji                # E0.6   [3] (➕..➗)    plus..divide
+27A1          ; Emoji                # E0.6   [1] (➡️)       right arrow
+27B0          ; Emoji                # E0.6   [1] (➰)       curly loop
+27BF          ; Emoji                # E1.0   [1] (➿)       double curly loop
+2934..2935    ; Emoji                # E0.6   [2] (⤴️..⤵️)    right arrow curving up..right arrow curving down
+2B05..2B07    ; Emoji                # E0.6   [3] (⬅️..⬇️)    left arrow..down arrow
+2B1B..2B1C    ; Emoji                # E0.6   [2] (⬛..⬜)    black large square..white large square
+2B50          ; Emoji                # E0.6   [1] (⭐)       star
+2B55          ; Emoji                # E0.6   [1] (⭕)       hollow red circle
+3030          ; Emoji                # E0.6   [1] (〰️)       wavy dash
+303D          ; Emoji                # E0.6   [1] (〽️)       part alternation mark
+3297          ; Emoji                # E0.6   [1] (㊗️)       Japanese “congratulations” button
+3299          ; Emoji                # E0.6   [1] (㊙️)       Japanese “secret” button
+1F004         ; Emoji                # E0.6   [1] (🀄)       mahjong red dragon
+1F0CF         ; Emoji                # E0.6   [1] (🃏)       joker
+1F170..1F171  ; Emoji                # E0.6   [2] (🅰️..🅱️)    A button (blood type)..B button (blood type)
+1F17E..1F17F  ; Emoji                # E0.6   [2] (🅾️..🅿️)    O button (blood type)..P button
+1F18E         ; Emoji                # E0.6   [1] (🆎)       AB button (blood type)
+1F191..1F19A  ; Emoji                # E0.6  [10] (🆑..🆚)    CL button..VS button
+1F1E6..1F1FF  ; Emoji                # E0.0  [26] (🇦..🇿)    regional indicator symbol letter a..regional indicator symbol letter z
+1F201..1F202  ; Emoji                # E0.6   [2] (🈁..🈂️)    Japanese “here” button..Japanese “service charge” button
+1F21A         ; Emoji                # E0.6   [1] (🈚)       Japanese “free of charge” button
+1F22F         ; Emoji                # E0.6   [1] (🈯)       Japanese “reserved” button
+1F232..1F23A  ; Emoji                # E0.6   [9] (🈲..🈺)    Japanese “prohibited” button..Japanese “open for business” button
+1F250..1F251  ; Emoji                # E0.6   [2] (🉐..🉑)    Japanese “bargain” button..Japanese “acceptable” button
+1F300..1F30C  ; Emoji                # E0.6  [13] (🌀..🌌)    cyclone..milky way
+1F30D..1F30E  ; Emoji                # E0.7   [2] (🌍..🌎)    globe showing Europe-Africa..globe showing Americas
+1F30F         ; Emoji                # E0.6   [1] (🌏)       globe showing Asia-Australia
+1F310         ; Emoji                # E1.0   [1] (🌐)       globe with meridians
+1F311         ; Emoji                # E0.6   [1] (🌑)       new moon
+1F312         ; Emoji                # E1.0   [1] (🌒)       waxing crescent moon
+1F313..1F315  ; Emoji                # E0.6   [3] (🌓..🌕)    first quarter moon..full moon
+1F316..1F318  ; Emoji                # E1.0   [3] (🌖..🌘)    waning gibbous moon..waning crescent moon
+1F319         ; Emoji                # E0.6   [1] (🌙)       crescent moon
+1F31A         ; Emoji                # E1.0   [1] (🌚)       new moon face
+1F31B         ; Emoji                # E0.6   [1] (🌛)       first quarter moon face
+1F31C         ; Emoji                # E0.7   [1] (🌜)       last quarter moon face
+1F31D..1F31E  ; Emoji                # E1.0   [2] (🌝..🌞)    full moon face..sun with face
+1F31F..1F320  ; Emoji                # E0.6   [2] (🌟..🌠)    glowing star..shooting star
+1F321         ; Emoji                # E0.7   [1] (🌡️)       thermometer
+1F324..1F32C  ; Emoji                # E0.7   [9] (🌤️..🌬️)    sun behind small cloud..wind face
+1F32D..1F32F  ; Emoji                # E1.0   [3] (🌭..🌯)    hot dog..burrito
+1F330..1F331  ; Emoji                # E0.6   [2] (🌰..🌱)    chestnut..seedling
+1F332..1F333  ; Emoji                # E1.0   [2] (🌲..🌳)    evergreen tree..deciduous tree
+1F334..1F335  ; Emoji                # E0.6   [2] (🌴..🌵)    palm tree..cactus
+1F336         ; Emoji                # E0.7   [1] (🌶️)       hot pepper
+1F337..1F34A  ; Emoji                # E0.6  [20] (🌷..🍊)    tulip..tangerine
+1F34B         ; Emoji                # E1.0   [1] (🍋)       lemon
+1F34C..1F34F  ; Emoji                # E0.6   [4] (🍌..🍏)    banana..green apple
+1F350         ; Emoji                # E1.0   [1] (🍐)       pear
+1F351..1F37B  ; Emoji                # E0.6  [43] (🍑..🍻)    peach..clinking beer mugs
+1F37C         ; Emoji                # E1.0   [1] (🍼)       baby bottle
+1F37D         ; Emoji                # E0.7   [1] (🍽️)       fork and knife with plate
+1F37E..1F37F  ; Emoji                # E1.0   [2] (🍾..🍿)    bottle with popping cork..popcorn
+1F380..1F393  ; Emoji                # E0.6  [20] (🎀..🎓)    ribbon..graduation cap
+1F396..1F397  ; Emoji                # E0.7   [2] (🎖️..🎗️)    military medal..reminder ribbon
+1F399..1F39B  ; Emoji                # E0.7   [3] (🎙️..🎛️)    studio microphone..control knobs
+1F39E..1F39F  ; Emoji                # E0.7   [2] (🎞️..🎟️)    film frames..admission tickets
+1F3A0..1F3C4  ; Emoji                # E0.6  [37] (🎠..🏄)    carousel horse..person surfing
+1F3C5         ; Emoji                # E1.0   [1] (🏅)       sports medal
+1F3C6         ; Emoji                # E0.6   [1] (🏆)       trophy
+1F3C7         ; Emoji                # E1.0   [1] (🏇)       horse racing
+1F3C8         ; Emoji                # E0.6   [1] (🏈)       american football
+1F3C9         ; Emoji                # E1.0   [1] (🏉)       rugby football
+1F3CA         ; Emoji                # E0.6   [1] (🏊)       person swimming
+1F3CB..1F3CE  ; Emoji                # E0.7   [4] (🏋️..🏎️)    person lifting weights..racing car
+1F3CF..1F3D3  ; Emoji                # E1.0   [5] (🏏..🏓)    cricket game..ping pong
+1F3D4..1F3DF  ; Emoji                # E0.7  [12] (🏔️..🏟️)    snow-capped mountain..stadium
+1F3E0..1F3E3  ; Emoji                # E0.6   [4] (🏠..🏣)    house..Japanese post office
+1F3E4         ; Emoji                # E1.0   [1] (🏤)       post office
+1F3E5..1F3F0  ; Emoji                # E0.6  [12] (🏥..🏰)    hospital..castle
+1F3F3         ; Emoji                # E0.7   [1] (🏳️)       white flag
+1F3F4         ; Emoji                # E1.0   [1] (🏴)       black flag
+1F3F5         ; Emoji                # E0.7   [1] (🏵️)       rosette
+1F3F7         ; Emoji                # E0.7   [1] (🏷️)       label
+1F3F8..1F407  ; Emoji                # E1.0  [16] (🏸..🐇)    badminton..rabbit
+1F408         ; Emoji                # E0.7   [1] (🐈)       cat
+1F409..1F40B  ; Emoji                # E1.0   [3] (🐉..🐋)    dragon..whale
+1F40C..1F40E  ; Emoji                # E0.6   [3] (🐌..🐎)    snail..horse
+1F40F..1F410  ; Emoji                # E1.0   [2] (🐏..🐐)    ram..goat
+1F411..1F412  ; Emoji                # E0.6   [2] (🐑..🐒)    ewe..monkey
+1F413         ; Emoji                # E1.0   [1] (🐓)       rooster
+1F414         ; Emoji                # E0.6   [1] (🐔)       chicken
+1F415         ; Emoji                # E0.7   [1] (🐕)       dog
+1F416         ; Emoji                # E1.0   [1] (🐖)       pig
+1F417..1F429  ; Emoji                # E0.6  [19] (🐗..🐩)    boar..poodle
+1F42A         ; Emoji                # E1.0   [1] (🐪)       camel
+1F42B..1F43E  ; Emoji                # E0.6  [20] (🐫..🐾)    two-hump camel..paw prints
+1F43F         ; Emoji                # E0.7   [1] (🐿️)       chipmunk
+1F440         ; Emoji                # E0.6   [1] (👀)       eyes
+1F441         ; Emoji                # E0.7   [1] (👁️)       eye
+1F442..1F464  ; Emoji                # E0.6  [35] (👂..👤)    ear..bust in silhouette
+1F465         ; Emoji                # E1.0   [1] (👥)       busts in silhouette
+1F466..1F46B  ; Emoji                # E0.6   [6] (👦..👫)    boy..woman and man holding hands
+1F46C..1F46D  ; Emoji                # E1.0   [2] (👬..👭)    men holding hands..women holding hands
+1F46E..1F4AC  ; Emoji                # E0.6  [63] (👮..💬)    police officer..speech balloon
+1F4AD         ; Emoji                # E1.0   [1] (💭)       thought balloon
+1F4AE..1F4B5  ; Emoji                # E0.6   [8] (💮..💵)    white flower..dollar banknote
+1F4B6..1F4B7  ; Emoji                # E1.0   [2] (💶..💷)    euro banknote..pound banknote
+1F4B8..1F4EB  ; Emoji                # E0.6  [52] (💸..📫)    money with wings..closed mailbox with raised flag
+1F4EC..1F4ED  ; Emoji                # E0.7   [2] (📬..📭)    open mailbox with raised flag..open mailbox with lowered flag
+1F4EE         ; Emoji                # E0.6   [1] (📮)       postbox
+1F4EF         ; Emoji                # E1.0   [1] (📯)       postal horn
+1F4F0..1F4F4  ; Emoji                # E0.6   [5] (📰..📴)    newspaper..mobile phone off
+1F4F5         ; Emoji                # E1.0   [1] (📵)       no mobile phones
+1F4F6..1F4F7  ; Emoji                # E0.6   [2] (📶..📷)    antenna bars..camera
+1F4F8         ; Emoji                # E1.0   [1] (📸)       camera with flash
+1F4F9..1F4FC  ; Emoji                # E0.6   [4] (📹..📼)    video camera..videocassette
+1F4FD         ; Emoji                # E0.7   [1] (📽️)       film projector
+1F4FF..1F502  ; Emoji                # E1.0   [4] (📿..🔂)    prayer beads..repeat single button
+1F503         ; Emoji                # E0.6   [1] (🔃)       clockwise vertical arrows
+1F504..1F507  ; Emoji                # E1.0   [4] (🔄..🔇)    counterclockwise arrows button..muted speaker
+1F508         ; Emoji                # E0.7   [1] (🔈)       speaker low volume
+1F509         ; Emoji                # E1.0   [1] (🔉)       speaker medium volume
+1F50A..1F514  ; Emoji                # E0.6  [11] (🔊..🔔)    speaker high volume..bell
+1F515         ; Emoji                # E1.0   [1] (🔕)       bell with slash
+1F516..1F52B  ; Emoji                # E0.6  [22] (🔖..🔫)    bookmark..water pistol
+1F52C..1F52D  ; Emoji                # E1.0   [2] (🔬..🔭)    microscope..telescope
+1F52E..1F53D  ; Emoji                # E0.6  [16] (🔮..🔽)    crystal ball..downwards button
+1F549..1F54A  ; Emoji                # E0.7   [2] (🕉️..🕊️)    om..dove
+1F54B..1F54E  ; Emoji                # E1.0   [4] (🕋..🕎)    kaaba..menorah
+1F550..1F55B  ; Emoji                # E0.6  [12] (🕐..🕛)    one o’clock..twelve o’clock
+1F55C..1F567  ; Emoji                # E0.7  [12] (🕜..🕧)    one-thirty..twelve-thirty
+1F56F..1F570  ; Emoji                # E0.7   [2] (🕯️..🕰️)    candle..mantelpiece clock
+1F573..1F579  ; Emoji                # E0.7   [7] (🕳️..🕹️)    hole..joystick
+1F57A         ; Emoji                # E3.0   [1] (🕺)       man dancing
+1F587         ; Emoji                # E0.7   [1] (🖇️)       linked paperclips
+1F58A..1F58D  ; Emoji                # E0.7   [4] (🖊️..🖍️)    pen..crayon
+1F590         ; Emoji                # E0.7   [1] (🖐️)       hand with fingers splayed
+1F595..1F596  ; Emoji                # E1.0   [2] (🖕..🖖)    middle finger..vulcan salute
+1F5A4         ; Emoji                # E3.0   [1] (🖤)       black heart
+1F5A5         ; Emoji                # E0.7   [1] (🖥️)       desktop computer
+1F5A8         ; Emoji                # E0.7   [1] (🖨️)       printer
+1F5B1..1F5B2  ; Emoji                # E0.7   [2] (🖱️..🖲️)    computer mouse..trackball
+1F5BC         ; Emoji                # E0.7   [1] (🖼️)       framed picture
+1F5C2..1F5C4  ; Emoji                # E0.7   [3] (🗂️..🗄️)    card index dividers..file cabinet
+1F5D1..1F5D3  ; Emoji                # E0.7   [3] (🗑️..🗓️)    wastebasket..spiral calendar
+1F5DC..1F5DE  ; Emoji                # E0.7   [3] (🗜️..🗞️)    clamp..rolled-up newspaper
+1F5E1         ; Emoji                # E0.7   [1] (🗡️)       dagger
+1F5E3         ; Emoji                # E0.7   [1] (🗣️)       speaking head
+1F5E8         ; Emoji                # E2.0   [1] (🗨️)       left speech bubble
+1F5EF         ; Emoji                # E0.7   [1] (🗯️)       right anger bubble
+1F5F3         ; Emoji                # E0.7   [1] (🗳️)       ballot box with ballot
+1F5FA         ; Emoji                # E0.7   [1] (🗺️)       world map
+1F5FB..1F5FF  ; Emoji                # E0.6   [5] (🗻..🗿)    mount fuji..moai
+1F600         ; Emoji                # E1.0   [1] (😀)       grinning face
+1F601..1F606  ; Emoji                # E0.6   [6] (😁..😆)    beaming face with smiling eyes..grinning squinting face
+1F607..1F608  ; Emoji                # E1.0   [2] (😇..😈)    smiling face with halo..smiling face with horns
+1F609..1F60D  ; Emoji                # E0.6   [5] (😉..😍)    winking face..smiling face with heart-eyes
+1F60E         ; Emoji                # E1.0   [1] (😎)       smiling face with sunglasses
+1F60F         ; Emoji                # E0.6   [1] (😏)       smirking face
+1F610         ; Emoji                # E0.7   [1] (😐)       neutral face
+1F611         ; Emoji                # E1.0   [1] (😑)       expressionless face
+1F612..1F614  ; Emoji                # E0.6   [3] (😒..😔)    unamused face..pensive face
+1F615         ; Emoji                # E1.0   [1] (😕)       confused face
+1F616         ; Emoji                # E0.6   [1] (😖)       confounded face
+1F617         ; Emoji                # E1.0   [1] (😗)       kissing face
+1F618         ; Emoji                # E0.6   [1] (😘)       face blowing a kiss
+1F619         ; Emoji                # E1.0   [1] (😙)       kissing face with smiling eyes
+1F61A         ; Emoji                # E0.6   [1] (😚)       kissing face with closed eyes
+1F61B         ; Emoji                # E1.0   [1] (😛)       face with tongue
+1F61C..1F61E  ; Emoji                # E0.6   [3] (😜..😞)    winking face with tongue..disappointed face
+1F61F         ; Emoji                # E1.0   [1] (😟)       worried face
+1F620..1F625  ; Emoji                # E0.6   [6] (😠..😥)    angry face..sad but relieved face
+1F626..1F627  ; Emoji                # E1.0   [2] (😦..😧)    frowning face with open mouth..anguished face
+1F628..1F62B  ; Emoji                # E0.6   [4] (😨..😫)    fearful face..tired face
+1F62C         ; Emoji                # E1.0   [1] (😬)       grimacing face
+1F62D         ; Emoji                # E0.6   [1] (😭)       loudly crying face
+1F62E..1F62F  ; Emoji                # E1.0   [2] (😮..😯)    face with open mouth..hushed face
+1F630..1F633  ; Emoji                # E0.6   [4] (😰..😳)    anxious face with sweat..flushed face
+1F634         ; Emoji                # E1.0   [1] (😴)       sleeping face
+1F635         ; Emoji                # E0.6   [1] (😵)       face with crossed-out eyes
+1F636         ; Emoji                # E1.0   [1] (😶)       face without mouth
+1F637..1F640  ; Emoji                # E0.6  [10] (😷..🙀)    face with medical mask..weary cat
+1F641..1F644  ; Emoji                # E1.0   [4] (🙁..🙄)    slightly frowning face..face with rolling eyes
+1F645..1F64F  ; Emoji                # E0.6  [11] (🙅..🙏)    person gesturing NO..folded hands
+1F680         ; Emoji                # E0.6   [1] (🚀)       rocket
+1F681..1F682  ; Emoji                # E1.0   [2] (🚁..🚂)    helicopter..locomotive
+1F683..1F685  ; Emoji                # E0.6   [3] (🚃..🚅)    railway car..bullet train
+1F686         ; Emoji                # E1.0   [1] (🚆)       train
+1F687         ; Emoji                # E0.6   [1] (🚇)       metro
+1F688         ; Emoji                # E1.0   [1] (🚈)       light rail
+1F689         ; Emoji                # E0.6   [1] (🚉)       station
+1F68A..1F68B  ; Emoji                # E1.0   [2] (🚊..🚋)    tram..tram car
+1F68C         ; Emoji                # E0.6   [1] (🚌)       bus
+1F68D         ; Emoji                # E0.7   [1] (🚍)       oncoming bus
+1F68E         ; Emoji                # E1.0   [1] (🚎)       trolleybus
+1F68F         ; Emoji                # E0.6   [1] (🚏)       bus stop
+1F690         ; Emoji                # E1.0   [1] (🚐)       minibus
+1F691..1F693  ; Emoji                # E0.6   [3] (🚑..🚓)    ambulance..police car
+1F694         ; Emoji                # E0.7   [1] (🚔)       oncoming police car
+1F695         ; Emoji                # E0.6   [1] (🚕)       taxi
+1F696         ; Emoji                # E1.0   [1] (🚖)       oncoming taxi
+1F697         ; Emoji                # E0.6   [1] (🚗)       automobile
+1F698         ; Emoji                # E0.7   [1] (🚘)       oncoming automobile
+1F699..1F69A  ; Emoji                # E0.6   [2] (🚙..🚚)    sport utility vehicle..delivery truck
+1F69B..1F6A1  ; Emoji                # E1.0   [7] (🚛..🚡)    articulated lorry..aerial tramway
+1F6A2         ; Emoji                # E0.6   [1] (🚢)       ship
+1F6A3         ; Emoji                # E1.0   [1] (🚣)       person rowing boat
+1F6A4..1F6A5  ; Emoji                # E0.6   [2] (🚤..🚥)    speedboat..horizontal traffic light
+1F6A6         ; Emoji                # E1.0   [1] (🚦)       vertical traffic light
+1F6A7..1F6AD  ; Emoji                # E0.6   [7] (🚧..🚭)    construction..no smoking
+1F6AE..1F6B1  ; Emoji                # E1.0   [4] (🚮..🚱)    litter in bin sign..non-potable water
+1F6B2         ; Emoji                # E0.6   [1] (🚲)       bicycle
+1F6B3..1F6B5  ; Emoji                # E1.0   [3] (🚳..🚵)    no bicycles..person mountain biking
+1F6B6         ; Emoji                # E0.6   [1] (🚶)       person walking
+1F6B7..1F6B8  ; Emoji                # E1.0   [2] (🚷..🚸)    no pedestrians..children crossing
+1F6B9..1F6BE  ; Emoji                # E0.6   [6] (🚹..🚾)    men’s room..water closet
+1F6BF         ; Emoji                # E1.0   [1] (🚿)       shower
+1F6C0         ; Emoji                # E0.6   [1] (🛀)       person taking bath
+1F6C1..1F6C5  ; Emoji                # E1.0   [5] (🛁..🛅)    bathtub..left luggage
+1F6CB         ; Emoji                # E0.7   [1] (🛋️)       couch and lamp
+1F6CC         ; Emoji                # E1.0   [1] (🛌)       person in bed
+1F6CD..1F6CF  ; Emoji                # E0.7   [3] (🛍️..🛏️)    shopping bags..bed
+1F6D0         ; Emoji                # E1.0   [1] (🛐)       place of worship
+1F6D1..1F6D2  ; Emoji                # E3.0   [2] (🛑..🛒)    stop sign..shopping cart
+1F6D5         ; Emoji                # E12.0  [1] (🛕)       hindu temple
+1F6D6..1F6D7  ; Emoji                # E13.0  [2] (🛖..🛗)    hut..elevator
+1F6DC         ; Emoji                # E15.0  [1] (🛜)       wireless
+1F6DD..1F6DF  ; Emoji                # E14.0  [3] (🛝..🛟)    playground slide..ring buoy
+1F6E0..1F6E5  ; Emoji                # E0.7   [6] (🛠️..🛥️)    hammer and wrench..motor boat
+1F6E9         ; Emoji                # E0.7   [1] (🛩️)       small airplane
+1F6EB..1F6EC  ; Emoji                # E1.0   [2] (🛫..🛬)    airplane departure..airplane arrival
+1F6F0         ; Emoji                # E0.7   [1] (🛰️)       satellite
+1F6F3         ; Emoji                # E0.7   [1] (🛳️)       passenger ship
+1F6F4..1F6F6  ; Emoji                # E3.0   [3] (🛴..🛶)    kick scooter..canoe
+1F6F7..1F6F8  ; Emoji                # E5.0   [2] (🛷..🛸)    sled..flying saucer
+1F6F9         ; Emoji                # E11.0  [1] (🛹)       skateboard
+1F6FA         ; Emoji                # E12.0  [1] (🛺)       auto rickshaw
+1F6FB..1F6FC  ; Emoji                # E13.0  [2] (🛻..🛼)    pickup truck..roller skate
+1F7E0..1F7EB  ; Emoji                # E12.0 [12] (🟠..🟫)    orange circle..brown square
+1F7F0         ; Emoji                # E14.0  [1] (🟰)       heavy equals sign
+1F90C         ; Emoji                # E13.0  [1] (🤌)       pinched fingers
+1F90D..1F90F  ; Emoji                # E12.0  [3] (🤍..🤏)    white heart..pinching hand
+1F910..1F918  ; Emoji                # E1.0   [9] (🤐..🤘)    zipper-mouth face..sign of the horns
+1F919..1F91E  ; Emoji                # E3.0   [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Emoji                # E5.0   [1] (🤟)       love-you gesture
+1F920..1F927  ; Emoji                # E3.0   [8] (🤠..🤧)    cowboy hat face..sneezing face
+1F928..1F92F  ; Emoji                # E5.0   [8] (🤨..🤯)    face with raised eyebrow..exploding head
+1F930         ; Emoji                # E3.0   [1] (🤰)       pregnant woman
+1F931..1F932  ; Emoji                # E5.0   [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F93A  ; Emoji                # E3.0   [8] (🤳..🤺)    selfie..person fencing
+1F93C..1F93E  ; Emoji                # E3.0   [3] (🤼..🤾)    people wrestling..person playing handball
+1F93F         ; Emoji                # E12.0  [1] (🤿)       diving mask
+1F940..1F945  ; Emoji                # E3.0   [6] (🥀..🥅)    wilted flower..goal net
+1F947..1F94B  ; Emoji                # E3.0   [5] (🥇..🥋)    1st place medal..martial arts uniform
+1F94C         ; Emoji                # E5.0   [1] (🥌)       curling stone
+1F94D..1F94F  ; Emoji                # E11.0  [3] (🥍..🥏)    lacrosse..flying disc
+1F950..1F95E  ; Emoji                # E3.0  [15] (🥐..🥞)    croissant..pancakes
+1F95F..1F96B  ; Emoji                # E5.0  [13] (🥟..🥫)    dumpling..canned food
+1F96C..1F970  ; Emoji                # E11.0  [5] (🥬..🥰)    leafy green..smiling face with hearts
+1F971         ; Emoji                # E12.0  [1] (🥱)       yawning face
+1F972         ; Emoji                # E13.0  [1] (🥲)       smiling face with tear
+1F973..1F976  ; Emoji                # E11.0  [4] (🥳..🥶)    partying face..cold face
+1F977..1F978  ; Emoji                # E13.0  [2] (🥷..🥸)    ninja..disguised face
+1F979         ; Emoji                # E14.0  [1] (🥹)       face holding back tears
+1F97A         ; Emoji                # E11.0  [1] (🥺)       pleading face
+1F97B         ; Emoji                # E12.0  [1] (🥻)       sari
+1F97C..1F97F  ; Emoji                # E11.0  [4] (🥼..🥿)    lab coat..flat shoe
+1F980..1F984  ; Emoji                # E1.0   [5] (🦀..🦄)    crab..unicorn
+1F985..1F991  ; Emoji                # E3.0  [13] (🦅..🦑)    eagle..squid
+1F992..1F997  ; Emoji                # E5.0   [6] (🦒..🦗)    giraffe..cricket
+1F998..1F9A2  ; Emoji                # E11.0 [11] (🦘..🦢)    kangaroo..swan
+1F9A3..1F9A4  ; Emoji                # E13.0  [2] (🦣..🦤)    mammoth..dodo
+1F9A5..1F9AA  ; Emoji                # E12.0  [6] (🦥..🦪)    sloth..oyster
+1F9AB..1F9AD  ; Emoji                # E13.0  [3] (🦫..🦭)    beaver..seal
+1F9AE..1F9AF  ; Emoji                # E12.0  [2] (🦮..🦯)    guide dog..white cane
+1F9B0..1F9B9  ; Emoji                # E11.0 [10] (🦰..🦹)    red hair..supervillain
+1F9BA..1F9BF  ; Emoji                # E12.0  [6] (🦺..🦿)    safety vest..mechanical leg
+1F9C0         ; Emoji                # E1.0   [1] (🧀)       cheese wedge
+1F9C1..1F9C2  ; Emoji                # E11.0  [2] (🧁..🧂)    cupcake..salt
+1F9C3..1F9CA  ; Emoji                # E12.0  [8] (🧃..🧊)    beverage box..ice
+1F9CB         ; Emoji                # E13.0  [1] (🧋)       bubble tea
+1F9CC         ; Emoji                # E14.0  [1] (🧌)       troll
+1F9CD..1F9CF  ; Emoji                # E12.0  [3] (🧍..🧏)    person standing..deaf person
+1F9D0..1F9E6  ; Emoji                # E5.0  [23] (🧐..🧦)    face with monocle..socks
+1F9E7..1F9FF  ; Emoji                # E11.0 [25] (🧧..🧿)    red envelope..nazar amulet
+1FA70..1FA73  ; Emoji                # E12.0  [4] (🩰..🩳)    ballet shoes..shorts
+1FA74         ; Emoji                # E13.0  [1] (🩴)       thong sandal
+1FA75..1FA77  ; Emoji                # E15.0  [3] (🩵..🩷)    light blue heart..pink heart
+1FA78..1FA7A  ; Emoji                # E12.0  [3] (🩸..🩺)    drop of blood..stethoscope
+1FA7B..1FA7C  ; Emoji                # E14.0  [2] (🩻..🩼)    x-ray..crutch
+1FA80..1FA82  ; Emoji                # E12.0  [3] (🪀..🪂)    yo-yo..parachute
+1FA83..1FA86  ; Emoji                # E13.0  [4] (🪃..🪆)    boomerang..nesting dolls
+1FA87..1FA88  ; Emoji                # E15.0  [2] (🪇..🪈)    maracas..flute
+1FA90..1FA95  ; Emoji                # E12.0  [6] (🪐..🪕)    ringed planet..banjo
+1FA96..1FAA8  ; Emoji                # E13.0 [19] (🪖..🪨)    military helmet..rock
+1FAA9..1FAAC  ; Emoji                # E14.0  [4] (🪩..🪬)    mirror ball..hamsa
+1FAAD..1FAAF  ; Emoji                # E15.0  [3] (🪭..🪯)    folding hand fan..khanda
+1FAB0..1FAB6  ; Emoji                # E13.0  [7] (🪰..🪶)    fly..feather
+1FAB7..1FABA  ; Emoji                # E14.0  [4] (🪷..🪺)    lotus..nest with eggs
+1FABB..1FABD  ; Emoji                # E15.0  [3] (🪻..🪽)    hyacinth..wing
+1FABF         ; Emoji                # E15.0  [1] (🪿)       goose
+1FAC0..1FAC2  ; Emoji                # E13.0  [3] (🫀..🫂)    anatomical heart..people hugging
+1FAC3..1FAC5  ; Emoji                # E14.0  [3] (🫃..🫅)    pregnant man..person with crown
+1FACE..1FACF  ; Emoji                # E15.0  [2] (🫎..🫏)    moose..donkey
+1FAD0..1FAD6  ; Emoji                # E13.0  [7] (🫐..🫖)    blueberries..teapot
+1FAD7..1FAD9  ; Emoji                # E14.0  [3] (🫗..🫙)    pouring liquid..jar
+1FADA..1FADB  ; Emoji                # E15.0  [2] (🫚..🫛)    ginger root..pea pod
+1FAE0..1FAE7  ; Emoji                # E14.0  [8] (🫠..🫧)    melting face..bubbles
+1FAE8         ; Emoji                # E15.0  [1] (🫨)       shaking face
+1FAF0..1FAF6  ; Emoji                # E14.0  [7] (🫰..🫶)    hand with index finger and thumb crossed..heart hands
+1FAF7..1FAF8  ; Emoji                # E15.0  [2] (🫷..🫸)    leftwards pushing hand..rightwards pushing hand
+
+# Total elements: 1424
+
+# ================================================
+
+# All omitted code points have Emoji_Presentation=No
+
+231A..231B    ; Emoji_Presentation   # E0.6   [2] (⌚..⌛)    watch..hourglass done
+23E9..23EC    ; Emoji_Presentation   # E0.6   [4] (⏩..⏬)    fast-forward button..fast down button
+23F0          ; Emoji_Presentation   # E0.6   [1] (⏰)       alarm clock
+23F3          ; Emoji_Presentation   # E0.6   [1] (⏳)       hourglass not done
+25FD..25FE    ; Emoji_Presentation   # E0.6   [2] (◽..◾)    white medium-small square..black medium-small square
+2614..2615    ; Emoji_Presentation   # E0.6   [2] (☔..☕)    umbrella with rain drops..hot beverage
+2648..2653    ; Emoji_Presentation   # E0.6  [12] (♈..♓)    Aries..Pisces
+267F          ; Emoji_Presentation   # E0.6   [1] (♿)       wheelchair symbol
+2693          ; Emoji_Presentation   # E0.6   [1] (⚓)       anchor
+26A1          ; Emoji_Presentation   # E0.6   [1] (⚡)       high voltage
+26AA..26AB    ; Emoji_Presentation   # E0.6   [2] (⚪..⚫)    white circle..black circle
+26BD..26BE    ; Emoji_Presentation   # E0.6   [2] (⚽..⚾)    soccer ball..baseball
+26C4..26C5    ; Emoji_Presentation   # E0.6   [2] (⛄..⛅)    snowman without snow..sun behind cloud
+26CE          ; Emoji_Presentation   # E0.6   [1] (⛎)       Ophiuchus
+26D4          ; Emoji_Presentation   # E0.6   [1] (⛔)       no entry
+26EA          ; Emoji_Presentation   # E0.6   [1] (⛪)       church
+26F2..26F3    ; Emoji_Presentation   # E0.6   [2] (⛲..⛳)    fountain..flag in hole
+26F5          ; Emoji_Presentation   # E0.6   [1] (⛵)       sailboat
+26FA          ; Emoji_Presentation   # E0.6   [1] (⛺)       tent
+26FD          ; Emoji_Presentation   # E0.6   [1] (⛽)       fuel pump
+2705          ; Emoji_Presentation   # E0.6   [1] (✅)       check mark button
+270A..270B    ; Emoji_Presentation   # E0.6   [2] (✊..✋)    raised fist..raised hand
+2728          ; Emoji_Presentation   # E0.6   [1] (✨)       sparkles
+274C          ; Emoji_Presentation   # E0.6   [1] (❌)       cross mark
+274E          ; Emoji_Presentation   # E0.6   [1] (❎)       cross mark button
+2753..2755    ; Emoji_Presentation   # E0.6   [3] (❓..❕)    red question mark..white exclamation mark
+2757          ; Emoji_Presentation   # E0.6   [1] (❗)       red exclamation mark
+2795..2797    ; Emoji_Presentation   # E0.6   [3] (➕..➗)    plus..divide
+27B0          ; Emoji_Presentation   # E0.6   [1] (➰)       curly loop
+27BF          ; Emoji_Presentation   # E1.0   [1] (➿)       double curly loop
+2B1B..2B1C    ; Emoji_Presentation   # E0.6   [2] (⬛..⬜)    black large square..white large square
+2B50          ; Emoji_Presentation   # E0.6   [1] (⭐)       star
+2B55          ; Emoji_Presentation   # E0.6   [1] (⭕)       hollow red circle
+1F004         ; Emoji_Presentation   # E0.6   [1] (🀄)       mahjong red dragon
+1F0CF         ; Emoji_Presentation   # E0.6   [1] (🃏)       joker
+1F18E         ; Emoji_Presentation   # E0.6   [1] (🆎)       AB button (blood type)
+1F191..1F19A  ; Emoji_Presentation   # E0.6  [10] (🆑..🆚)    CL button..VS button
+1F1E6..1F1FF  ; Emoji_Presentation   # E0.0  [26] (🇦..🇿)    regional indicator symbol letter a..regional indicator symbol letter z
+1F201         ; Emoji_Presentation   # E0.6   [1] (🈁)       Japanese “here” button
+1F21A         ; Emoji_Presentation   # E0.6   [1] (🈚)       Japanese “free of charge” button
+1F22F         ; Emoji_Presentation   # E0.6   [1] (🈯)       Japanese “reserved” button
+1F232..1F236  ; Emoji_Presentation   # E0.6   [5] (🈲..🈶)    Japanese “prohibited” button..Japanese “not free of charge” button
+1F238..1F23A  ; Emoji_Presentation   # E0.6   [3] (🈸..🈺)    Japanese “application” button..Japanese “open for business” button
+1F250..1F251  ; Emoji_Presentation   # E0.6   [2] (🉐..🉑)    Japanese “bargain” button..Japanese “acceptable” button
+1F300..1F30C  ; Emoji_Presentation   # E0.6  [13] (🌀..🌌)    cyclone..milky way
+1F30D..1F30E  ; Emoji_Presentation   # E0.7   [2] (🌍..🌎)    globe showing Europe-Africa..globe showing Americas
+1F30F         ; Emoji_Presentation   # E0.6   [1] (🌏)       globe showing Asia-Australia
+1F310         ; Emoji_Presentation   # E1.0   [1] (🌐)       globe with meridians
+1F311         ; Emoji_Presentation   # E0.6   [1] (🌑)       new moon
+1F312         ; Emoji_Presentation   # E1.0   [1] (🌒)       waxing crescent moon
+1F313..1F315  ; Emoji_Presentation   # E0.6   [3] (🌓..🌕)    first quarter moon..full moon
+1F316..1F318  ; Emoji_Presentation   # E1.0   [3] (🌖..🌘)    waning gibbous moon..waning crescent moon
+1F319         ; Emoji_Presentation   # E0.6   [1] (🌙)       crescent moon
+1F31A         ; Emoji_Presentation   # E1.0   [1] (🌚)       new moon face
+1F31B         ; Emoji_Presentation   # E0.6   [1] (🌛)       first quarter moon face
+1F31C         ; Emoji_Presentation   # E0.7   [1] (🌜)       last quarter moon face
+1F31D..1F31E  ; Emoji_Presentation   # E1.0   [2] (🌝..🌞)    full moon face..sun with face
+1F31F..1F320  ; Emoji_Presentation   # E0.6   [2] (🌟..🌠)    glowing star..shooting star
+1F32D..1F32F  ; Emoji_Presentation   # E1.0   [3] (🌭..🌯)    hot dog..burrito
+1F330..1F331  ; Emoji_Presentation   # E0.6   [2] (🌰..🌱)    chestnut..seedling
+1F332..1F333  ; Emoji_Presentation   # E1.0   [2] (🌲..🌳)    evergreen tree..deciduous tree
+1F334..1F335  ; Emoji_Presentation   # E0.6   [2] (🌴..🌵)    palm tree..cactus
+1F337..1F34A  ; Emoji_Presentation   # E0.6  [20] (🌷..🍊)    tulip..tangerine
+1F34B         ; Emoji_Presentation   # E1.0   [1] (🍋)       lemon
+1F34C..1F34F  ; Emoji_Presentation   # E0.6   [4] (🍌..🍏)    banana..green apple
+1F350         ; Emoji_Presentation   # E1.0   [1] (🍐)       pear
+1F351..1F37B  ; Emoji_Presentation   # E0.6  [43] (🍑..🍻)    peach..clinking beer mugs
+1F37C         ; Emoji_Presentation   # E1.0   [1] (🍼)       baby bottle
+1F37E..1F37F  ; Emoji_Presentation   # E1.0   [2] (🍾..🍿)    bottle with popping cork..popcorn
+1F380..1F393  ; Emoji_Presentation   # E0.6  [20] (🎀..🎓)    ribbon..graduation cap
+1F3A0..1F3C4  ; Emoji_Presentation   # E0.6  [37] (🎠..🏄)    carousel horse..person surfing
+1F3C5         ; Emoji_Presentation   # E1.0   [1] (🏅)       sports medal
+1F3C6         ; Emoji_Presentation   # E0.6   [1] (🏆)       trophy
+1F3C7         ; Emoji_Presentation   # E1.0   [1] (🏇)       horse racing
+1F3C8         ; Emoji_Presentation   # E0.6   [1] (🏈)       american football
+1F3C9         ; Emoji_Presentation   # E1.0   [1] (🏉)       rugby football
+1F3CA         ; Emoji_Presentation   # E0.6   [1] (🏊)       person swimming
+1F3CF..1F3D3  ; Emoji_Presentation   # E1.0   [5] (🏏..🏓)    cricket game..ping pong
+1F3E0..1F3E3  ; Emoji_Presentation   # E0.6   [4] (🏠..🏣)    house..Japanese post office
+1F3E4         ; Emoji_Presentation   # E1.0   [1] (🏤)       post office
+1F3E5..1F3F0  ; Emoji_Presentation   # E0.6  [12] (🏥..🏰)    hospital..castle
+1F3F4         ; Emoji_Presentation   # E1.0   [1] (🏴)       black flag
+1F3F8..1F407  ; Emoji_Presentation   # E1.0  [16] (🏸..🐇)    badminton..rabbit
+1F408         ; Emoji_Presentation   # E0.7   [1] (🐈)       cat
+1F409..1F40B  ; Emoji_Presentation   # E1.0   [3] (🐉..🐋)    dragon..whale
+1F40C..1F40E  ; Emoji_Presentation   # E0.6   [3] (🐌..🐎)    snail..horse
+1F40F..1F410  ; Emoji_Presentation   # E1.0   [2] (🐏..🐐)    ram..goat
+1F411..1F412  ; Emoji_Presentation   # E0.6   [2] (🐑..🐒)    ewe..monkey
+1F413         ; Emoji_Presentation   # E1.0   [1] (🐓)       rooster
+1F414         ; Emoji_Presentation   # E0.6   [1] (🐔)       chicken
+1F415         ; Emoji_Presentation   # E0.7   [1] (🐕)       dog
+1F416         ; Emoji_Presentation   # E1.0   [1] (🐖)       pig
+1F417..1F429  ; Emoji_Presentation   # E0.6  [19] (🐗..🐩)    boar..poodle
+1F42A         ; Emoji_Presentation   # E1.0   [1] (🐪)       camel
+1F42B..1F43E  ; Emoji_Presentation   # E0.6  [20] (🐫..🐾)    two-hump camel..paw prints
+1F440         ; Emoji_Presentation   # E0.6   [1] (👀)       eyes
+1F442..1F464  ; Emoji_Presentation   # E0.6  [35] (👂..👤)    ear..bust in silhouette
+1F465         ; Emoji_Presentation   # E1.0   [1] (👥)       busts in silhouette
+1F466..1F46B  ; Emoji_Presentation   # E0.6   [6] (👦..👫)    boy..woman and man holding hands
+1F46C..1F46D  ; Emoji_Presentation   # E1.0   [2] (👬..👭)    men holding hands..women holding hands
+1F46E..1F4AC  ; Emoji_Presentation   # E0.6  [63] (👮..💬)    police officer..speech balloon
+1F4AD         ; Emoji_Presentation   # E1.0   [1] (💭)       thought balloon
+1F4AE..1F4B5  ; Emoji_Presentation   # E0.6   [8] (💮..💵)    white flower..dollar banknote
+1F4B6..1F4B7  ; Emoji_Presentation   # E1.0   [2] (💶..💷)    euro banknote..pound banknote
+1F4B8..1F4EB  ; Emoji_Presentation   # E0.6  [52] (💸..📫)    money with wings..closed mailbox with raised flag
+1F4EC..1F4ED  ; Emoji_Presentation   # E0.7   [2] (📬..📭)    open mailbox with raised flag..open mailbox with lowered flag
+1F4EE         ; Emoji_Presentation   # E0.6   [1] (📮)       postbox
+1F4EF         ; Emoji_Presentation   # E1.0   [1] (📯)       postal horn
+1F4F0..1F4F4  ; Emoji_Presentation   # E0.6   [5] (📰..📴)    newspaper..mobile phone off
+1F4F5         ; Emoji_Presentation   # E1.0   [1] (📵)       no mobile phones
+1F4F6..1F4F7  ; Emoji_Presentation   # E0.6   [2] (📶..📷)    antenna bars..camera
+1F4F8         ; Emoji_Presentation   # E1.0   [1] (📸)       camera with flash
+1F4F9..1F4FC  ; Emoji_Presentation   # E0.6   [4] (📹..📼)    video camera..videocassette
+1F4FF..1F502  ; Emoji_Presentation   # E1.0   [4] (📿..🔂)    prayer beads..repeat single button
+1F503         ; Emoji_Presentation   # E0.6   [1] (🔃)       clockwise vertical arrows
+1F504..1F507  ; Emoji_Presentation   # E1.0   [4] (🔄..🔇)    counterclockwise arrows button..muted speaker
+1F508         ; Emoji_Presentation   # E0.7   [1] (🔈)       speaker low volume
+1F509         ; Emoji_Presentation   # E1.0   [1] (🔉)       speaker medium volume
+1F50A..1F514  ; Emoji_Presentation   # E0.6  [11] (🔊..🔔)    speaker high volume..bell
+1F515         ; Emoji_Presentation   # E1.0   [1] (🔕)       bell with slash
+1F516..1F52B  ; Emoji_Presentation   # E0.6  [22] (🔖..🔫)    bookmark..water pistol
+1F52C..1F52D  ; Emoji_Presentation   # E1.0   [2] (🔬..🔭)    microscope..telescope
+1F52E..1F53D  ; Emoji_Presentation   # E0.6  [16] (🔮..🔽)    crystal ball..downwards button
+1F54B..1F54E  ; Emoji_Presentation   # E1.0   [4] (🕋..🕎)    kaaba..menorah
+1F550..1F55B  ; Emoji_Presentation   # E0.6  [12] (🕐..🕛)    one o’clock..twelve o’clock
+1F55C..1F567  ; Emoji_Presentation   # E0.7  [12] (🕜..🕧)    one-thirty..twelve-thirty
+1F57A         ; Emoji_Presentation   # E3.0   [1] (🕺)       man dancing
+1F595..1F596  ; Emoji_Presentation   # E1.0   [2] (🖕..🖖)    middle finger..vulcan salute
+1F5A4         ; Emoji_Presentation   # E3.0   [1] (🖤)       black heart
+1F5FB..1F5FF  ; Emoji_Presentation   # E0.6   [5] (🗻..🗿)    mount fuji..moai
+1F600         ; Emoji_Presentation   # E1.0   [1] (😀)       grinning face
+1F601..1F606  ; Emoji_Presentation   # E0.6   [6] (😁..😆)    beaming face with smiling eyes..grinning squinting face
+1F607..1F608  ; Emoji_Presentation   # E1.0   [2] (😇..😈)    smiling face with halo..smiling face with horns
+1F609..1F60D  ; Emoji_Presentation   # E0.6   [5] (😉..😍)    winking face..smiling face with heart-eyes
+1F60E         ; Emoji_Presentation   # E1.0   [1] (😎)       smiling face with sunglasses
+1F60F         ; Emoji_Presentation   # E0.6   [1] (😏)       smirking face
+1F610         ; Emoji_Presentation   # E0.7   [1] (😐)       neutral face
+1F611         ; Emoji_Presentation   # E1.0   [1] (😑)       expressionless face
+1F612..1F614  ; Emoji_Presentation   # E0.6   [3] (😒..😔)    unamused face..pensive face
+1F615         ; Emoji_Presentation   # E1.0   [1] (😕)       confused face
+1F616         ; Emoji_Presentation   # E0.6   [1] (😖)       confounded face
+1F617         ; Emoji_Presentation   # E1.0   [1] (😗)       kissing face
+1F618         ; Emoji_Presentation   # E0.6   [1] (😘)       face blowing a kiss
+1F619         ; Emoji_Presentation   # E1.0   [1] (😙)       kissing face with smiling eyes
+1F61A         ; Emoji_Presentation   # E0.6   [1] (😚)       kissing face with closed eyes
+1F61B         ; Emoji_Presentation   # E1.0   [1] (😛)       face with tongue
+1F61C..1F61E  ; Emoji_Presentation   # E0.6   [3] (😜..😞)    winking face with tongue..disappointed face
+1F61F         ; Emoji_Presentation   # E1.0   [1] (😟)       worried face
+1F620..1F625  ; Emoji_Presentation   # E0.6   [6] (😠..😥)    angry face..sad but relieved face
+1F626..1F627  ; Emoji_Presentation   # E1.0   [2] (😦..😧)    frowning face with open mouth..anguished face
+1F628..1F62B  ; Emoji_Presentation   # E0.6   [4] (😨..😫)    fearful face..tired face
+1F62C         ; Emoji_Presentation   # E1.0   [1] (😬)       grimacing face
+1F62D         ; Emoji_Presentation   # E0.6   [1] (😭)       loudly crying face
+1F62E..1F62F  ; Emoji_Presentation   # E1.0   [2] (😮..😯)    face with open mouth..hushed face
+1F630..1F633  ; Emoji_Presentation   # E0.6   [4] (😰..😳)    anxious face with sweat..flushed face
+1F634         ; Emoji_Presentation   # E1.0   [1] (😴)       sleeping face
+1F635         ; Emoji_Presentation   # E0.6   [1] (😵)       face with crossed-out eyes
+1F636         ; Emoji_Presentation   # E1.0   [1] (😶)       face without mouth
+1F637..1F640  ; Emoji_Presentation   # E0.6  [10] (😷..🙀)    face with medical mask..weary cat
+1F641..1F644  ; Emoji_Presentation   # E1.0   [4] (🙁..🙄)    slightly frowning face..face with rolling eyes
+1F645..1F64F  ; Emoji_Presentation   # E0.6  [11] (🙅..🙏)    person gesturing NO..folded hands
+1F680         ; Emoji_Presentation   # E0.6   [1] (🚀)       rocket
+1F681..1F682  ; Emoji_Presentation   # E1.0   [2] (🚁..🚂)    helicopter..locomotive
+1F683..1F685  ; Emoji_Presentation   # E0.6   [3] (🚃..🚅)    railway car..bullet train
+1F686         ; Emoji_Presentation   # E1.0   [1] (🚆)       train
+1F687         ; Emoji_Presentation   # E0.6   [1] (🚇)       metro
+1F688         ; Emoji_Presentation   # E1.0   [1] (🚈)       light rail
+1F689         ; Emoji_Presentation   # E0.6   [1] (🚉)       station
+1F68A..1F68B  ; Emoji_Presentation   # E1.0   [2] (🚊..🚋)    tram..tram car
+1F68C         ; Emoji_Presentation   # E0.6   [1] (🚌)       bus
+1F68D         ; Emoji_Presentation   # E0.7   [1] (🚍)       oncoming bus
+1F68E         ; Emoji_Presentation   # E1.0   [1] (🚎)       trolleybus
+1F68F         ; Emoji_Presentation   # E0.6   [1] (🚏)       bus stop
+1F690         ; Emoji_Presentation   # E1.0   [1] (🚐)       minibus
+1F691..1F693  ; Emoji_Presentation   # E0.6   [3] (🚑..🚓)    ambulance..police car
+1F694         ; Emoji_Presentation   # E0.7   [1] (🚔)       oncoming police car
+1F695         ; Emoji_Presentation   # E0.6   [1] (🚕)       taxi
+1F696         ; Emoji_Presentation   # E1.0   [1] (🚖)       oncoming taxi
+1F697         ; Emoji_Presentation   # E0.6   [1] (🚗)       automobile
+1F698         ; Emoji_Presentation   # E0.7   [1] (🚘)       oncoming automobile
+1F699..1F69A  ; Emoji_Presentation   # E0.6   [2] (🚙..🚚)    sport utility vehicle..delivery truck
+1F69B..1F6A1  ; Emoji_Presentation   # E1.0   [7] (🚛..🚡)    articulated lorry..aerial tramway
+1F6A2         ; Emoji_Presentation   # E0.6   [1] (🚢)       ship
+1F6A3         ; Emoji_Presentation   # E1.0   [1] (🚣)       person rowing boat
+1F6A4..1F6A5  ; Emoji_Presentation   # E0.6   [2] (🚤..🚥)    speedboat..horizontal traffic light
+1F6A6         ; Emoji_Presentation   # E1.0   [1] (🚦)       vertical traffic light
+1F6A7..1F6AD  ; Emoji_Presentation   # E0.6   [7] (🚧..🚭)    construction..no smoking
+1F6AE..1F6B1  ; Emoji_Presentation   # E1.0   [4] (🚮..🚱)    litter in bin sign..non-potable water
+1F6B2         ; Emoji_Presentation   # E0.6   [1] (🚲)       bicycle
+1F6B3..1F6B5  ; Emoji_Presentation   # E1.0   [3] (🚳..🚵)    no bicycles..person mountain biking
+1F6B6         ; Emoji_Presentation   # E0.6   [1] (🚶)       person walking
+1F6B7..1F6B8  ; Emoji_Presentation   # E1.0   [2] (🚷..🚸)    no pedestrians..children crossing
+1F6B9..1F6BE  ; Emoji_Presentation   # E0.6   [6] (🚹..🚾)    men’s room..water closet
+1F6BF         ; Emoji_Presentation   # E1.0   [1] (🚿)       shower
+1F6C0         ; Emoji_Presentation   # E0.6   [1] (🛀)       person taking bath
+1F6C1..1F6C5  ; Emoji_Presentation   # E1.0   [5] (🛁..🛅)    bathtub..left luggage
+1F6CC         ; Emoji_Presentation   # E1.0   [1] (🛌)       person in bed
+1F6D0         ; Emoji_Presentation   # E1.0   [1] (🛐)       place of worship
+1F6D1..1F6D2  ; Emoji_Presentation   # E3.0   [2] (🛑..🛒)    stop sign..shopping cart
+1F6D5         ; Emoji_Presentation   # E12.0  [1] (🛕)       hindu temple
+1F6D6..1F6D7  ; Emoji_Presentation   # E13.0  [2] (🛖..🛗)    hut..elevator
+1F6DC         ; Emoji_Presentation   # E15.0  [1] (🛜)       wireless
+1F6DD..1F6DF  ; Emoji_Presentation   # E14.0  [3] (🛝..🛟)    playground slide..ring buoy
+1F6EB..1F6EC  ; Emoji_Presentation   # E1.0   [2] (🛫..🛬)    airplane departure..airplane arrival
+1F6F4..1F6F6  ; Emoji_Presentation   # E3.0   [3] (🛴..🛶)    kick scooter..canoe
+1F6F7..1F6F8  ; Emoji_Presentation   # E5.0   [2] (🛷..🛸)    sled..flying saucer
+1F6F9         ; Emoji_Presentation   # E11.0  [1] (🛹)       skateboard
+1F6FA         ; Emoji_Presentation   # E12.0  [1] (🛺)       auto rickshaw
+1F6FB..1F6FC  ; Emoji_Presentation   # E13.0  [2] (🛻..🛼)    pickup truck..roller skate
+1F7E0..1F7EB  ; Emoji_Presentation   # E12.0 [12] (🟠..🟫)    orange circle..brown square
+1F7F0         ; Emoji_Presentation   # E14.0  [1] (🟰)       heavy equals sign
+1F90C         ; Emoji_Presentation   # E13.0  [1] (🤌)       pinched fingers
+1F90D..1F90F  ; Emoji_Presentation   # E12.0  [3] (🤍..🤏)    white heart..pinching hand
+1F910..1F918  ; Emoji_Presentation   # E1.0   [9] (🤐..🤘)    zipper-mouth face..sign of the horns
+1F919..1F91E  ; Emoji_Presentation   # E3.0   [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Emoji_Presentation   # E5.0   [1] (🤟)       love-you gesture
+1F920..1F927  ; Emoji_Presentation   # E3.0   [8] (🤠..🤧)    cowboy hat face..sneezing face
+1F928..1F92F  ; Emoji_Presentation   # E5.0   [8] (🤨..🤯)    face with raised eyebrow..exploding head
+1F930         ; Emoji_Presentation   # E3.0   [1] (🤰)       pregnant woman
+1F931..1F932  ; Emoji_Presentation   # E5.0   [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F93A  ; Emoji_Presentation   # E3.0   [8] (🤳..🤺)    selfie..person fencing
+1F93C..1F93E  ; Emoji_Presentation   # E3.0   [3] (🤼..🤾)    people wrestling..person playing handball
+1F93F         ; Emoji_Presentation   # E12.0  [1] (🤿)       diving mask
+1F940..1F945  ; Emoji_Presentation   # E3.0   [6] (🥀..🥅)    wilted flower..goal net
+1F947..1F94B  ; Emoji_Presentation   # E3.0   [5] (🥇..🥋)    1st place medal..martial arts uniform
+1F94C         ; Emoji_Presentation   # E5.0   [1] (🥌)       curling stone
+1F94D..1F94F  ; Emoji_Presentation   # E11.0  [3] (🥍..🥏)    lacrosse..flying disc
+1F950..1F95E  ; Emoji_Presentation   # E3.0  [15] (🥐..🥞)    croissant..pancakes
+1F95F..1F96B  ; Emoji_Presentation   # E5.0  [13] (🥟..🥫)    dumpling..canned food
+1F96C..1F970  ; Emoji_Presentation   # E11.0  [5] (🥬..🥰)    leafy green..smiling face with hearts
+1F971         ; Emoji_Presentation   # E12.0  [1] (🥱)       yawning face
+1F972         ; Emoji_Presentation   # E13.0  [1] (🥲)       smiling face with tear
+1F973..1F976  ; Emoji_Presentation   # E11.0  [4] (🥳..🥶)    partying face..cold face
+1F977..1F978  ; Emoji_Presentation   # E13.0  [2] (🥷..🥸)    ninja..disguised face
+1F979         ; Emoji_Presentation   # E14.0  [1] (🥹)       face holding back tears
+1F97A         ; Emoji_Presentation   # E11.0  [1] (🥺)       pleading face
+1F97B         ; Emoji_Presentation   # E12.0  [1] (🥻)       sari
+1F97C..1F97F  ; Emoji_Presentation   # E11.0  [4] (🥼..🥿)    lab coat..flat shoe
+1F980..1F984  ; Emoji_Presentation   # E1.0   [5] (🦀..🦄)    crab..unicorn
+1F985..1F991  ; Emoji_Presentation   # E3.0  [13] (🦅..🦑)    eagle..squid
+1F992..1F997  ; Emoji_Presentation   # E5.0   [6] (🦒..🦗)    giraffe..cricket
+1F998..1F9A2  ; Emoji_Presentation   # E11.0 [11] (🦘..🦢)    kangaroo..swan
+1F9A3..1F9A4  ; Emoji_Presentation   # E13.0  [2] (🦣..🦤)    mammoth..dodo
+1F9A5..1F9AA  ; Emoji_Presentation   # E12.0  [6] (🦥..🦪)    sloth..oyster
+1F9AB..1F9AD  ; Emoji_Presentation   # E13.0  [3] (🦫..🦭)    beaver..seal
+1F9AE..1F9AF  ; Emoji_Presentation   # E12.0  [2] (🦮..🦯)    guide dog..white cane
+1F9B0..1F9B9  ; Emoji_Presentation   # E11.0 [10] (🦰..🦹)    red hair..supervillain
+1F9BA..1F9BF  ; Emoji_Presentation   # E12.0  [6] (🦺..🦿)    safety vest..mechanical leg
+1F9C0         ; Emoji_Presentation   # E1.0   [1] (🧀)       cheese wedge
+1F9C1..1F9C2  ; Emoji_Presentation   # E11.0  [2] (🧁..🧂)    cupcake..salt
+1F9C3..1F9CA  ; Emoji_Presentation   # E12.0  [8] (🧃..🧊)    beverage box..ice
+1F9CB         ; Emoji_Presentation   # E13.0  [1] (🧋)       bubble tea
+1F9CC         ; Emoji_Presentation   # E14.0  [1] (🧌)       troll
+1F9CD..1F9CF  ; Emoji_Presentation   # E12.0  [3] (🧍..🧏)    person standing..deaf person
+1F9D0..1F9E6  ; Emoji_Presentation   # E5.0  [23] (🧐..🧦)    face with monocle..socks
+1F9E7..1F9FF  ; Emoji_Presentation   # E11.0 [25] (🧧..🧿)    red envelope..nazar amulet
+1FA70..1FA73  ; Emoji_Presentation   # E12.0  [4] (🩰..🩳)    ballet shoes..shorts
+1FA74         ; Emoji_Presentation   # E13.0  [1] (🩴)       thong sandal
+1FA75..1FA77  ; Emoji_Presentation   # E15.0  [3] (🩵..🩷)    light blue heart..pink heart
+1FA78..1FA7A  ; Emoji_Presentation   # E12.0  [3] (🩸..🩺)    drop of blood..stethoscope
+1FA7B..1FA7C  ; Emoji_Presentation   # E14.0  [2] (🩻..🩼)    x-ray..crutch
+1FA80..1FA82  ; Emoji_Presentation   # E12.0  [3] (🪀..🪂)    yo-yo..parachute
+1FA83..1FA86  ; Emoji_Presentation   # E13.0  [4] (🪃..🪆)    boomerang..nesting dolls
+1FA87..1FA88  ; Emoji_Presentation   # E15.0  [2] (🪇..🪈)    maracas..flute
+1FA90..1FA95  ; Emoji_Presentation   # E12.0  [6] (🪐..🪕)    ringed planet..banjo
+1FA96..1FAA8  ; Emoji_Presentation   # E13.0 [19] (🪖..🪨)    military helmet..rock
+1FAA9..1FAAC  ; Emoji_Presentation   # E14.0  [4] (🪩..🪬)    mirror ball..hamsa
+1FAAD..1FAAF  ; Emoji_Presentation   # E15.0  [3] (🪭..🪯)    folding hand fan..khanda
+1FAB0..1FAB6  ; Emoji_Presentation   # E13.0  [7] (🪰..🪶)    fly..feather
+1FAB7..1FABA  ; Emoji_Presentation   # E14.0  [4] (🪷..🪺)    lotus..nest with eggs
+1FABB..1FABD  ; Emoji_Presentation   # E15.0  [3] (🪻..🪽)    hyacinth..wing
+1FABF         ; Emoji_Presentation   # E15.0  [1] (🪿)       goose
+1FAC0..1FAC2  ; Emoji_Presentation   # E13.0  [3] (🫀..🫂)    anatomical heart..people hugging
+1FAC3..1FAC5  ; Emoji_Presentation   # E14.0  [3] (🫃..🫅)    pregnant man..person with crown
+1FACE..1FACF  ; Emoji_Presentation   # E15.0  [2] (🫎..🫏)    moose..donkey
+1FAD0..1FAD6  ; Emoji_Presentation   # E13.0  [7] (🫐..🫖)    blueberries..teapot
+1FAD7..1FAD9  ; Emoji_Presentation   # E14.0  [3] (🫗..🫙)    pouring liquid..jar
+1FADA..1FADB  ; Emoji_Presentation   # E15.0  [2] (🫚..🫛)    ginger root..pea pod
+1FAE0..1FAE7  ; Emoji_Presentation   # E14.0  [8] (🫠..🫧)    melting face..bubbles
+1FAE8         ; Emoji_Presentation   # E15.0  [1] (🫨)       shaking face
+1FAF0..1FAF6  ; Emoji_Presentation   # E14.0  [7] (🫰..🫶)    hand with index finger and thumb crossed..heart hands
+1FAF7..1FAF8  ; Emoji_Presentation   # E15.0  [2] (🫷..🫸)    leftwards pushing hand..rightwards pushing hand
+
+# Total elements: 1205
+
+# ================================================
+
+# All omitted code points have Emoji_Modifier=No
+
+1F3FB..1F3FF  ; Emoji_Modifier       # E1.0   [5] (🏻..🏿)    light skin tone..dark skin tone
+
+# Total elements: 5
+
+# ================================================
+
+# All omitted code points have Emoji_Modifier_Base=No
+
+261D          ; Emoji_Modifier_Base  # E0.6   [1] (☝️)       index pointing up
+26F9          ; Emoji_Modifier_Base  # E0.7   [1] (⛹️)       person bouncing ball
+270A..270C    ; Emoji_Modifier_Base  # E0.6   [3] (✊..✌️)    raised fist..victory hand
+270D          ; Emoji_Modifier_Base  # E0.7   [1] (✍️)       writing hand
+1F385         ; Emoji_Modifier_Base  # E0.6   [1] (🎅)       Santa Claus
+1F3C2..1F3C4  ; Emoji_Modifier_Base  # E0.6   [3] (🏂..🏄)    snowboarder..person surfing
+1F3C7         ; Emoji_Modifier_Base  # E1.0   [1] (🏇)       horse racing
+1F3CA         ; Emoji_Modifier_Base  # E0.6   [1] (🏊)       person swimming
+1F3CB..1F3CC  ; Emoji_Modifier_Base  # E0.7   [2] (🏋️..🏌️)    person lifting weights..person golfing
+1F442..1F443  ; Emoji_Modifier_Base  # E0.6   [2] (👂..👃)    ear..nose
+1F446..1F450  ; Emoji_Modifier_Base  # E0.6  [11] (👆..👐)    backhand index pointing up..open hands
+1F466..1F46B  ; Emoji_Modifier_Base  # E0.6   [6] (👦..👫)    boy..woman and man holding hands
+1F46C..1F46D  ; Emoji_Modifier_Base  # E1.0   [2] (👬..👭)    men holding hands..women holding hands
+1F46E..1F478  ; Emoji_Modifier_Base  # E0.6  [11] (👮..👸)    police officer..princess
+1F47C         ; Emoji_Modifier_Base  # E0.6   [1] (👼)       baby angel
+1F481..1F483  ; Emoji_Modifier_Base  # E0.6   [3] (💁..💃)    person tipping hand..woman dancing
+1F485..1F487  ; Emoji_Modifier_Base  # E0.6   [3] (💅..💇)    nail polish..person getting haircut
+1F48F         ; Emoji_Modifier_Base  # E0.6   [1] (💏)       kiss
+1F491         ; Emoji_Modifier_Base  # E0.6   [1] (💑)       couple with heart
+1F4AA         ; Emoji_Modifier_Base  # E0.6   [1] (💪)       flexed biceps
+1F574..1F575  ; Emoji_Modifier_Base  # E0.7   [2] (🕴️..🕵️)    person in suit levitating..detective
+1F57A         ; Emoji_Modifier_Base  # E3.0   [1] (🕺)       man dancing
+1F590         ; Emoji_Modifier_Base  # E0.7   [1] (🖐️)       hand with fingers splayed
+1F595..1F596  ; Emoji_Modifier_Base  # E1.0   [2] (🖕..🖖)    middle finger..vulcan salute
+1F645..1F647  ; Emoji_Modifier_Base  # E0.6   [3] (🙅..🙇)    person gesturing NO..person bowing
+1F64B..1F64F  ; Emoji_Modifier_Base  # E0.6   [5] (🙋..🙏)    person raising hand..folded hands
+1F6A3         ; Emoji_Modifier_Base  # E1.0   [1] (🚣)       person rowing boat
+1F6B4..1F6B5  ; Emoji_Modifier_Base  # E1.0   [2] (🚴..🚵)    person biking..person mountain biking
+1F6B6         ; Emoji_Modifier_Base  # E0.6   [1] (🚶)       person walking
+1F6C0         ; Emoji_Modifier_Base  # E0.6   [1] (🛀)       person taking bath
+1F6CC         ; Emoji_Modifier_Base  # E1.0   [1] (🛌)       person in bed
+1F90C         ; Emoji_Modifier_Base  # E13.0  [1] (🤌)       pinched fingers
+1F90F         ; Emoji_Modifier_Base  # E12.0  [1] (🤏)       pinching hand
+1F918         ; Emoji_Modifier_Base  # E1.0   [1] (🤘)       sign of the horns
+1F919..1F91E  ; Emoji_Modifier_Base  # E3.0   [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Emoji_Modifier_Base  # E5.0   [1] (🤟)       love-you gesture
+1F926         ; Emoji_Modifier_Base  # E3.0   [1] (🤦)       person facepalming
+1F930         ; Emoji_Modifier_Base  # E3.0   [1] (🤰)       pregnant woman
+1F931..1F932  ; Emoji_Modifier_Base  # E5.0   [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F939  ; Emoji_Modifier_Base  # E3.0   [7] (🤳..🤹)    selfie..person juggling
+1F93C..1F93E  ; Emoji_Modifier_Base  # E3.0   [3] (🤼..🤾)    people wrestling..person playing handball
+1F977         ; Emoji_Modifier_Base  # E13.0  [1] (🥷)       ninja
+1F9B5..1F9B6  ; Emoji_Modifier_Base  # E11.0  [2] (🦵..🦶)    leg..foot
+1F9B8..1F9B9  ; Emoji_Modifier_Base  # E11.0  [2] (🦸..🦹)    superhero..supervillain
+1F9BB         ; Emoji_Modifier_Base  # E12.0  [1] (🦻)       ear with hearing aid
+1F9CD..1F9CF  ; Emoji_Modifier_Base  # E12.0  [3] (🧍..🧏)    person standing..deaf person
+1F9D1..1F9DD  ; Emoji_Modifier_Base  # E5.0  [13] (🧑..🧝)    person..elf
+1FAC3..1FAC5  ; Emoji_Modifier_Base  # E14.0  [3] (🫃..🫅)    pregnant man..person with crown
+1FAF0..1FAF6  ; Emoji_Modifier_Base  # E14.0  [7] (🫰..🫶)    hand with index finger and thumb crossed..heart hands
+1FAF7..1FAF8  ; Emoji_Modifier_Base  # E15.0  [2] (🫷..🫸)    leftwards pushing hand..rightwards pushing hand
+
+# Total elements: 134
+
+# ================================================
+
+# All omitted code points have Emoji_Component=No
+
+0023          ; Emoji_Component      # E0.0   [1] (#️)       hash sign
+002A          ; Emoji_Component      # E0.0   [1] (*️)       asterisk
+0030..0039    ; Emoji_Component      # E0.0  [10] (0️..9️)    digit zero..digit nine
+200D          ; Emoji_Component      # E0.0   [1] (‍)        zero width joiner
+20E3          ; Emoji_Component      # E0.0   [1] (⃣)       combining enclosing keycap
+FE0F          ; Emoji_Component      # E0.0   [1] ()        VARIATION SELECTOR-16
+1F1E6..1F1FF  ; Emoji_Component      # E0.0  [26] (🇦..🇿)    regional indicator symbol letter a..regional indicator symbol letter z
+1F3FB..1F3FF  ; Emoji_Component      # E1.0   [5] (🏻..🏿)    light skin tone..dark skin tone
+1F9B0..1F9B3  ; Emoji_Component      # E11.0  [4] (🦰..🦳)    red hair..white hair
+E0020..E007F  ; Emoji_Component      # E0.0  [96] (󠀠..󠁿)      tag space..cancel tag
+
+# Total elements: 146
+
+# ================================================
+
+# All omitted code points have Extended_Pictographic=No
+
+00A9          ; Extended_Pictographic# E0.6   [1] (©️)       copyright
+00AE          ; Extended_Pictographic# E0.6   [1] (®️)       registered
+203C          ; Extended_Pictographic# E0.6   [1] (‼️)       double exclamation mark
+2049          ; Extended_Pictographic# E0.6   [1] (⁉️)       exclamation question mark
+2122          ; Extended_Pictographic# E0.6   [1] (™️)       trade mark
+2139          ; Extended_Pictographic# E0.6   [1] (ℹ️)       information
+2194..2199    ; Extended_Pictographic# E0.6   [6] (↔️..↙️)    left-right arrow..down-left arrow
+21A9..21AA    ; Extended_Pictographic# E0.6   [2] (↩️..↪️)    right arrow curving left..left arrow curving right
+231A..231B    ; Extended_Pictographic# E0.6   [2] (⌚..⌛)    watch..hourglass done
+2328          ; Extended_Pictographic# E1.0   [1] (⌨️)       keyboard
+2388          ; Extended_Pictographic# E0.0   [1] (⎈)       HELM SYMBOL
+23CF          ; Extended_Pictographic# E1.0   [1] (⏏️)       eject button
+23E9..23EC    ; Extended_Pictographic# E0.6   [4] (⏩..⏬)    fast-forward button..fast down button
+23ED..23EE    ; Extended_Pictographic# E0.7   [2] (⏭️..⏮️)    next track button..last track button
+23EF          ; Extended_Pictographic# E1.0   [1] (⏯️)       play or pause button
+23F0          ; Extended_Pictographic# E0.6   [1] (⏰)       alarm clock
+23F1..23F2    ; Extended_Pictographic# E1.0   [2] (⏱️..⏲️)    stopwatch..timer clock
+23F3          ; Extended_Pictographic# E0.6   [1] (⏳)       hourglass not done
+23F8..23FA    ; Extended_Pictographic# E0.7   [3] (⏸️..⏺️)    pause button..record button
+24C2          ; Extended_Pictographic# E0.6   [1] (Ⓜ️)       circled M
+25AA..25AB    ; Extended_Pictographic# E0.6   [2] (▪️..▫️)    black small square..white small square
+25B6          ; Extended_Pictographic# E0.6   [1] (▶️)       play button
+25C0          ; Extended_Pictographic# E0.6   [1] (◀️)       reverse button
+25FB..25FE    ; Extended_Pictographic# E0.6   [4] (◻️..◾)    white medium square..black medium-small square
+2600..2601    ; Extended_Pictographic# E0.6   [2] (☀️..☁️)    sun..cloud
+2602..2603    ; Extended_Pictographic# E0.7   [2] (☂️..☃️)    umbrella..snowman
+2604          ; Extended_Pictographic# E1.0   [1] (☄️)       comet
+2605          ; Extended_Pictographic# E0.0   [1] (★)       BLACK STAR
+2607..260D    ; Extended_Pictographic# E0.0   [7] (☇..☍)    LIGHTNING..OPPOSITION
+260E          ; Extended_Pictographic# E0.6   [1] (☎️)       telephone
+260F..2610    ; Extended_Pictographic# E0.0   [2] (☏..☐)    WHITE TELEPHONE..BALLOT BOX
+2611          ; Extended_Pictographic# E0.6   [1] (☑️)       check box with check
+2612          ; Extended_Pictographic# E0.0   [1] (☒)       BALLOT BOX WITH X
+2614..2615    ; Extended_Pictographic# E0.6   [2] (☔..☕)    umbrella with rain drops..hot beverage
+2616..2617    ; Extended_Pictographic# E0.0   [2] (☖..☗)    WHITE SHOGI PIECE..BLACK SHOGI PIECE
+2618          ; Extended_Pictographic# E1.0   [1] (☘️)       shamrock
+2619..261C    ; Extended_Pictographic# E0.0   [4] (☙..☜)    REVERSED ROTATED FLORAL HEART BULLET..WHITE LEFT POINTING INDEX
+261D          ; Extended_Pictographic# E0.6   [1] (☝️)       index pointing up
+261E..261F    ; Extended_Pictographic# E0.0   [2] (☞..☟)    WHITE RIGHT POINTING INDEX..WHITE DOWN POINTING INDEX
+2620          ; Extended_Pictographic# E1.0   [1] (☠️)       skull and crossbones
+2621          ; Extended_Pictographic# E0.0   [1] (☡)       CAUTION SIGN
+2622..2623    ; Extended_Pictographic# E1.0   [2] (☢️..☣️)    radioactive..biohazard
+2624..2625    ; Extended_Pictographic# E0.0   [2] (☤..☥)    CADUCEUS..ANKH
+2626          ; Extended_Pictographic# E1.0   [1] (☦️)       orthodox cross
+2627..2629    ; Extended_Pictographic# E0.0   [3] (☧..☩)    CHI RHO..CROSS OF JERUSALEM
+262A          ; Extended_Pictographic# E0.7   [1] (☪️)       star and crescent
+262B..262D    ; Extended_Pictographic# E0.0   [3] (☫..☭)    FARSI SYMBOL..HAMMER AND SICKLE
+262E          ; Extended_Pictographic# E1.0   [1] (☮️)       peace symbol
+262F          ; Extended_Pictographic# E0.7   [1] (☯️)       yin yang
+2630..2637    ; Extended_Pictographic# E0.0   [8] (☰..☷)    TRIGRAM FOR HEAVEN..TRIGRAM FOR EARTH
+2638..2639    ; Extended_Pictographic# E0.7   [2] (☸️..☹️)    wheel of dharma..frowning face
+263A          ; Extended_Pictographic# E0.6   [1] (☺️)       smiling face
+263B..263F    ; Extended_Pictographic# E0.0   [5] (☻..☿)    BLACK SMILING FACE..MERCURY
+2640          ; Extended_Pictographic# E4.0   [1] (♀️)       female sign
+2641          ; Extended_Pictographic# E0.0   [1] (♁)       EARTH
+2642          ; Extended_Pictographic# E4.0   [1] (♂️)       male sign
+2643..2647    ; Extended_Pictographic# E0.0   [5] (♃..♇)    JUPITER..PLUTO
+2648..2653    ; Extended_Pictographic# E0.6  [12] (♈..♓)    Aries..Pisces
+2654..265E    ; Extended_Pictographic# E0.0  [11] (♔..♞)    WHITE CHESS KING..BLACK CHESS KNIGHT
+265F          ; Extended_Pictographic# E11.0  [1] (♟️)       chess pawn
+2660          ; Extended_Pictographic# E0.6   [1] (♠️)       spade suit
+2661..2662    ; Extended_Pictographic# E0.0   [2] (♡..♢)    WHITE HEART SUIT..WHITE DIAMOND SUIT
+2663          ; Extended_Pictographic# E0.6   [1] (♣️)       club suit
+2664          ; Extended_Pictographic# E0.0   [1] (♤)       WHITE SPADE SUIT
+2665..2666    ; Extended_Pictographic# E0.6   [2] (♥️..♦️)    heart suit..diamond suit
+2667          ; Extended_Pictographic# E0.0   [1] (♧)       WHITE CLUB SUIT
+2668          ; Extended_Pictographic# E0.6   [1] (♨️)       hot springs
+2669..267A    ; Extended_Pictographic# E0.0  [18] (♩..♺)    QUARTER NOTE..RECYCLING SYMBOL FOR GENERIC MATERIALS
+267B          ; Extended_Pictographic# E0.6   [1] (♻️)       recycling symbol
+267C..267D    ; Extended_Pictographic# E0.0   [2] (♼..♽)    RECYCLED PAPER SYMBOL..PARTIALLY-RECYCLED PAPER SYMBOL
+267E          ; Extended_Pictographic# E11.0  [1] (♾️)       infinity
+267F          ; Extended_Pictographic# E0.6   [1] (♿)       wheelchair symbol
+2680..2685    ; Extended_Pictographic# E0.0   [6] (⚀..⚅)    DIE FACE-1..DIE FACE-6
+2690..2691    ; Extended_Pictographic# E0.0   [2] (⚐..⚑)    WHITE FLAG..BLACK FLAG
+2692          ; Extended_Pictographic# E1.0   [1] (⚒️)       hammer and pick
+2693          ; Extended_Pictographic# E0.6   [1] (⚓)       anchor
+2694          ; Extended_Pictographic# E1.0   [1] (⚔️)       crossed swords
+2695          ; Extended_Pictographic# E4.0   [1] (⚕️)       medical symbol
+2696..2697    ; Extended_Pictographic# E1.0   [2] (⚖️..⚗️)    balance scale..alembic
+2698          ; Extended_Pictographic# E0.0   [1] (⚘)       FLOWER
+2699          ; Extended_Pictographic# E1.0   [1] (⚙️)       gear
+269A          ; Extended_Pictographic# E0.0   [1] (⚚)       STAFF OF HERMES
+269B..269C    ; Extended_Pictographic# E1.0   [2] (⚛️..⚜️)    atom symbol..fleur-de-lis
+269D..269F    ; Extended_Pictographic# E0.0   [3] (⚝..⚟)    OUTLINED WHITE STAR..THREE LINES CONVERGING LEFT
+26A0..26A1    ; Extended_Pictographic# E0.6   [2] (⚠️..⚡)    warning..high voltage
+26A2..26A6    ; Extended_Pictographic# E0.0   [5] (⚢..⚦)    DOUBLED FEMALE SIGN..MALE WITH STROKE SIGN
+26A7          ; Extended_Pictographic# E13.0  [1] (⚧️)       transgender symbol
+26A8..26A9    ; Extended_Pictographic# E0.0   [2] (⚨..⚩)    VERTICAL MALE WITH STROKE SIGN..HORIZONTAL MALE WITH STROKE SIGN
+26AA..26AB    ; Extended_Pictographic# E0.6   [2] (⚪..⚫)    white circle..black circle
+26AC..26AF    ; Extended_Pictographic# E0.0   [4] (⚬..⚯)    MEDIUM SMALL WHITE CIRCLE..UNMARRIED PARTNERSHIP SYMBOL
+26B0..26B1    ; Extended_Pictographic# E1.0   [2] (⚰️..⚱️)    coffin..funeral urn
+26B2..26BC    ; Extended_Pictographic# E0.0  [11] (⚲..⚼)    NEUTER..SESQUIQUADRATE
+26BD..26BE    ; Extended_Pictographic# E0.6   [2] (⚽..⚾)    soccer ball..baseball
+26BF..26C3    ; Extended_Pictographic# E0.0   [5] (⚿..⛃)    SQUARED KEY..BLACK DRAUGHTS KING
+26C4..26C5    ; Extended_Pictographic# E0.6   [2] (⛄..⛅)    snowman without snow..sun behind cloud
+26C6..26C7    ; Extended_Pictographic# E0.0   [2] (⛆..⛇)    RAIN..BLACK SNOWMAN
+26C8          ; Extended_Pictographic# E0.7   [1] (⛈️)       cloud with lightning and rain
+26C9..26CD    ; Extended_Pictographic# E0.0   [5] (⛉..⛍)    TURNED WHITE SHOGI PIECE..DISABLED CAR
+26CE          ; Extended_Pictographic# E0.6   [1] (⛎)       Ophiuchus
+26CF          ; Extended_Pictographic# E0.7   [1] (⛏️)       pick
+26D0          ; Extended_Pictographic# E0.0   [1] (⛐)       CAR SLIDING
+26D1          ; Extended_Pictographic# E0.7   [1] (⛑️)       rescue worker’s helmet
+26D2          ; Extended_Pictographic# E0.0   [1] (⛒)       CIRCLED CROSSING LANES
+26D3          ; Extended_Pictographic# E0.7   [1] (⛓️)       chains
+26D4          ; Extended_Pictographic# E0.6   [1] (⛔)       no entry
+26D5..26E8    ; Extended_Pictographic# E0.0  [20] (⛕..⛨)    ALTERNATE ONE-WAY LEFT WAY TRAFFIC..BLACK CROSS ON SHIELD
+26E9          ; Extended_Pictographic# E0.7   [1] (⛩️)       shinto shrine
+26EA          ; Extended_Pictographic# E0.6   [1] (⛪)       church
+26EB..26EF    ; Extended_Pictographic# E0.0   [5] (⛫..⛯)    CASTLE..MAP SYMBOL FOR LIGHTHOUSE
+26F0..26F1    ; Extended_Pictographic# E0.7   [2] (⛰️..⛱️)    mountain..umbrella on ground
+26F2..26F3    ; Extended_Pictographic# E0.6   [2] (⛲..⛳)    fountain..flag in hole
+26F4          ; Extended_Pictographic# E0.7   [1] (⛴️)       ferry
+26F5          ; Extended_Pictographic# E0.6   [1] (⛵)       sailboat
+26F6          ; Extended_Pictographic# E0.0   [1] (⛶)       SQUARE FOUR CORNERS
+26F7..26F9    ; Extended_Pictographic# E0.7   [3] (⛷️..⛹️)    skier..person bouncing ball
+26FA          ; Extended_Pictographic# E0.6   [1] (⛺)       tent
+26FB..26FC    ; Extended_Pictographic# E0.0   [2] (⛻..⛼)    JAPANESE BANK SYMBOL..HEADSTONE GRAVEYARD SYMBOL
+26FD          ; Extended_Pictographic# E0.6   [1] (⛽)       fuel pump
+26FE..2701    ; Extended_Pictographic# E0.0   [4] (⛾..✁)    CUP ON BLACK SQUARE..UPPER BLADE SCISSORS
+2702          ; Extended_Pictographic# E0.6   [1] (✂️)       scissors
+2703..2704    ; Extended_Pictographic# E0.0   [2] (✃..✄)    LOWER BLADE SCISSORS..WHITE SCISSORS
+2705          ; Extended_Pictographic# E0.6   [1] (✅)       check mark button
+2708..270C    ; Extended_Pictographic# E0.6   [5] (✈️..✌️)    airplane..victory hand
+270D          ; Extended_Pictographic# E0.7   [1] (✍️)       writing hand
+270E          ; Extended_Pictographic# E0.0   [1] (✎)       LOWER RIGHT PENCIL
+270F          ; Extended_Pictographic# E0.6   [1] (✏️)       pencil
+2710..2711    ; Extended_Pictographic# E0.0   [2] (✐..✑)    UPPER RIGHT PENCIL..WHITE NIB
+2712          ; Extended_Pictographic# E0.6   [1] (✒️)       black nib
+2714          ; Extended_Pictographic# E0.6   [1] (✔️)       check mark
+2716          ; Extended_Pictographic# E0.6   [1] (✖️)       multiply
+271D          ; Extended_Pictographic# E0.7   [1] (✝️)       latin cross
+2721          ; Extended_Pictographic# E0.7   [1] (✡️)       star of David
+2728          ; Extended_Pictographic# E0.6   [1] (✨)       sparkles
+2733..2734    ; Extended_Pictographic# E0.6   [2] (✳️..✴️)    eight-spoked asterisk..eight-pointed star
+2744          ; Extended_Pictographic# E0.6   [1] (❄️)       snowflake
+2747          ; Extended_Pictographic# E0.6   [1] (❇️)       sparkle
+274C          ; Extended_Pictographic# E0.6   [1] (❌)       cross mark
+274E          ; Extended_Pictographic# E0.6   [1] (❎)       cross mark button
+2753..2755    ; Extended_Pictographic# E0.6   [3] (❓..❕)    red question mark..white exclamation mark
+2757          ; Extended_Pictographic# E0.6   [1] (❗)       red exclamation mark
+2763          ; Extended_Pictographic# E1.0   [1] (❣️)       heart exclamation
+2764          ; Extended_Pictographic# E0.6   [1] (❤️)       red heart
+2765..2767    ; Extended_Pictographic# E0.0   [3] (❥..❧)    ROTATED HEAVY BLACK HEART BULLET..ROTATED FLORAL HEART BULLET
+2795..2797    ; Extended_Pictographic# E0.6   [3] (➕..➗)    plus..divide
+27A1          ; Extended_Pictographic# E0.6   [1] (➡️)       right arrow
+27B0          ; Extended_Pictographic# E0.6   [1] (➰)       curly loop
+27BF          ; Extended_Pictographic# E1.0   [1] (➿)       double curly loop
+2934..2935    ; Extended_Pictographic# E0.6   [2] (⤴️..⤵️)    right arrow curving up..right arrow curving down
+2B05..2B07    ; Extended_Pictographic# E0.6   [3] (⬅️..⬇️)    left arrow..down arrow
+2B1B..2B1C    ; Extended_Pictographic# E0.6   [2] (⬛..⬜)    black large square..white large square
+2B50          ; Extended_Pictographic# E0.6   [1] (⭐)       star
+2B55          ; Extended_Pictographic# E0.6   [1] (⭕)       hollow red circle
+3030          ; Extended_Pictographic# E0.6   [1] (〰️)       wavy dash
+303D          ; Extended_Pictographic# E0.6   [1] (〽️)       part alternation mark
+3297          ; Extended_Pictographic# E0.6   [1] (㊗️)       Japanese “congratulations” button
+3299          ; Extended_Pictographic# E0.6   [1] (㊙️)       Japanese “secret” button
+1F000..1F003  ; Extended_Pictographic# E0.0   [4] (🀀..🀃)    MAHJONG TILE EAST WIND..MAHJONG TILE NORTH WIND
+1F004         ; Extended_Pictographic# E0.6   [1] (🀄)       mahjong red dragon
+1F005..1F0CE  ; Extended_Pictographic# E0.0 [202] (🀅..🃎)    MAHJONG TILE GREEN DRAGON..PLAYING CARD KING OF DIAMONDS
+1F0CF         ; Extended_Pictographic# E0.6   [1] (🃏)       joker
+1F0D0..1F0FF  ; Extended_Pictographic# E0.0  [48] (🃐..🃿)    <reserved-1F0D0>..<reserved-1F0FF>
+1F10D..1F10F  ; Extended_Pictographic# E0.0   [3] (🄍..🄏)    CIRCLED ZERO WITH SLASH..CIRCLED DOLLAR SIGN WITH OVERLAID BACKSLASH
+1F12F         ; Extended_Pictographic# E0.0   [1] (🄯)       COPYLEFT SYMBOL
+1F16C..1F16F  ; Extended_Pictographic# E0.0   [4] (🅬..🅯)    RAISED MR SIGN..CIRCLED HUMAN FIGURE
+1F170..1F171  ; Extended_Pictographic# E0.6   [2] (🅰️..🅱️)    A button (blood type)..B button (blood type)
+1F17E..1F17F  ; Extended_Pictographic# E0.6   [2] (🅾️..🅿️)    O button (blood type)..P button
+1F18E         ; Extended_Pictographic# E0.6   [1] (🆎)       AB button (blood type)
+1F191..1F19A  ; Extended_Pictographic# E0.6  [10] (🆑..🆚)    CL button..VS button
+1F1AD..1F1E5  ; Extended_Pictographic# E0.0  [57] (🆭..🇥)    MASK WORK SYMBOL..<reserved-1F1E5>
+1F201..1F202  ; Extended_Pictographic# E0.6   [2] (🈁..🈂️)    Japanese “here” button..Japanese “service charge” button
+1F203..1F20F  ; Extended_Pictographic# E0.0  [13] (🈃..🈏)    <reserved-1F203>..<reserved-1F20F>
+1F21A         ; Extended_Pictographic# E0.6   [1] (🈚)       Japanese “free of charge” button
+1F22F         ; Extended_Pictographic# E0.6   [1] (🈯)       Japanese “reserved” button
+1F232..1F23A  ; Extended_Pictographic# E0.6   [9] (🈲..🈺)    Japanese “prohibited” button..Japanese “open for business” button
+1F23C..1F23F  ; Extended_Pictographic# E0.0   [4] (🈼..🈿)    <reserved-1F23C>..<reserved-1F23F>
+1F249..1F24F  ; Extended_Pictographic# E0.0   [7] (🉉..🉏)    <reserved-1F249>..<reserved-1F24F>
+1F250..1F251  ; Extended_Pictographic# E0.6   [2] (🉐..🉑)    Japanese “bargain” button..Japanese “acceptable” button
+1F252..1F2FF  ; Extended_Pictographic# E0.0 [174] (🉒..🋿)    <reserved-1F252>..<reserved-1F2FF>
+1F300..1F30C  ; Extended_Pictographic# E0.6  [13] (🌀..🌌)    cyclone..milky way
+1F30D..1F30E  ; Extended_Pictographic# E0.7   [2] (🌍..🌎)    globe showing Europe-Africa..globe showing Americas
+1F30F         ; Extended_Pictographic# E0.6   [1] (🌏)       globe showing Asia-Australia
+1F310         ; Extended_Pictographic# E1.0   [1] (🌐)       globe with meridians
+1F311         ; Extended_Pictographic# E0.6   [1] (🌑)       new moon
+1F312         ; Extended_Pictographic# E1.0   [1] (🌒)       waxing crescent moon
+1F313..1F315  ; Extended_Pictographic# E0.6   [3] (🌓..🌕)    first quarter moon..full moon
+1F316..1F318  ; Extended_Pictographic# E1.0   [3] (🌖..🌘)    waning gibbous moon..waning crescent moon
+1F319         ; Extended_Pictographic# E0.6   [1] (🌙)       crescent moon
+1F31A         ; Extended_Pictographic# E1.0   [1] (🌚)       new moon face
+1F31B         ; Extended_Pictographic# E0.6   [1] (🌛)       first quarter moon face
+1F31C         ; Extended_Pictographic# E0.7   [1] (🌜)       last quarter moon face
+1F31D..1F31E  ; Extended_Pictographic# E1.0   [2] (🌝..🌞)    full moon face..sun with face
+1F31F..1F320  ; Extended_Pictographic# E0.6   [2] (🌟..🌠)    glowing star..shooting star
+1F321         ; Extended_Pictographic# E0.7   [1] (🌡️)       thermometer
+1F322..1F323  ; Extended_Pictographic# E0.0   [2] (🌢..🌣)    BLACK DROPLET..WHITE SUN
+1F324..1F32C  ; Extended_Pictographic# E0.7   [9] (🌤️..🌬️)    sun behind small cloud..wind face
+1F32D..1F32F  ; Extended_Pictographic# E1.0   [3] (🌭..🌯)    hot dog..burrito
+1F330..1F331  ; Extended_Pictographic# E0.6   [2] (🌰..🌱)    chestnut..seedling
+1F332..1F333  ; Extended_Pictographic# E1.0   [2] (🌲..🌳)    evergreen tree..deciduous tree
+1F334..1F335  ; Extended_Pictographic# E0.6   [2] (🌴..🌵)    palm tree..cactus
+1F336         ; Extended_Pictographic# E0.7   [1] (🌶️)       hot pepper
+1F337..1F34A  ; Extended_Pictographic# E0.6  [20] (🌷..🍊)    tulip..tangerine
+1F34B         ; Extended_Pictographic# E1.0   [1] (🍋)       lemon
+1F34C..1F34F  ; Extended_Pictographic# E0.6   [4] (🍌..🍏)    banana..green apple
+1F350         ; Extended_Pictographic# E1.0   [1] (🍐)       pear
+1F351..1F37B  ; Extended_Pictographic# E0.6  [43] (🍑..🍻)    peach..clinking beer mugs
+1F37C         ; Extended_Pictographic# E1.0   [1] (🍼)       baby bottle
+1F37D         ; Extended_Pictographic# E0.7   [1] (🍽️)       fork and knife with plate
+1F37E..1F37F  ; Extended_Pictographic# E1.0   [2] (🍾..🍿)    bottle with popping cork..popcorn
+1F380..1F393  ; Extended_Pictographic# E0.6  [20] (🎀..🎓)    ribbon..graduation cap
+1F394..1F395  ; Extended_Pictographic# E0.0   [2] (🎔..🎕)    HEART WITH TIP ON THE LEFT..BOUQUET OF FLOWERS
+1F396..1F397  ; Extended_Pictographic# E0.7   [2] (🎖️..🎗️)    military medal..reminder ribbon
+1F398         ; Extended_Pictographic# E0.0   [1] (🎘)       MUSICAL KEYBOARD WITH JACKS
+1F399..1F39B  ; Extended_Pictographic# E0.7   [3] (🎙️..🎛️)    studio microphone..control knobs
+1F39C..1F39D  ; Extended_Pictographic# E0.0   [2] (🎜..🎝)    BEAMED ASCENDING MUSICAL NOTES..BEAMED DESCENDING MUSICAL NOTES
+1F39E..1F39F  ; Extended_Pictographic# E0.7   [2] (🎞️..🎟️)    film frames..admission tickets
+1F3A0..1F3C4  ; Extended_Pictographic# E0.6  [37] (🎠..🏄)    carousel horse..person surfing
+1F3C5         ; Extended_Pictographic# E1.0   [1] (🏅)       sports medal
+1F3C6         ; Extended_Pictographic# E0.6   [1] (🏆)       trophy
+1F3C7         ; Extended_Pictographic# E1.0   [1] (🏇)       horse racing
+1F3C8         ; Extended_Pictographic# E0.6   [1] (🏈)       american football
+1F3C9         ; Extended_Pictographic# E1.0   [1] (🏉)       rugby football
+1F3CA         ; Extended_Pictographic# E0.6   [1] (🏊)       person swimming
+1F3CB..1F3CE  ; Extended_Pictographic# E0.7   [4] (🏋️..🏎️)    person lifting weights..racing car
+1F3CF..1F3D3  ; Extended_Pictographic# E1.0   [5] (🏏..🏓)    cricket game..ping pong
+1F3D4..1F3DF  ; Extended_Pictographic# E0.7  [12] (🏔️..🏟️)    snow-capped mountain..stadium
+1F3E0..1F3E3  ; Extended_Pictographic# E0.6   [4] (🏠..🏣)    house..Japanese post office
+1F3E4         ; Extended_Pictographic# E1.0   [1] (🏤)       post office
+1F3E5..1F3F0  ; Extended_Pictographic# E0.6  [12] (🏥..🏰)    hospital..castle
+1F3F1..1F3F2  ; Extended_Pictographic# E0.0   [2] (🏱..🏲)    WHITE PENNANT..BLACK PENNANT
+1F3F3         ; Extended_Pictographic# E0.7   [1] (🏳️)       white flag
+1F3F4         ; Extended_Pictographic# E1.0   [1] (🏴)       black flag
+1F3F5         ; Extended_Pictographic# E0.7   [1] (🏵️)       rosette
+1F3F6         ; Extended_Pictographic# E0.0   [1] (🏶)       BLACK ROSETTE
+1F3F7         ; Extended_Pictographic# E0.7   [1] (🏷️)       label
+1F3F8..1F3FA  ; Extended_Pictographic# E1.0   [3] (🏸..🏺)    badminton..amphora
+1F400..1F407  ; Extended_Pictographic# E1.0   [8] (🐀..🐇)    rat..rabbit
+1F408         ; Extended_Pictographic# E0.7   [1] (🐈)       cat
+1F409..1F40B  ; Extended_Pictographic# E1.0   [3] (🐉..🐋)    dragon..whale
+1F40C..1F40E  ; Extended_Pictographic# E0.6   [3] (🐌..🐎)    snail..horse
+1F40F..1F410  ; Extended_Pictographic# E1.0   [2] (🐏..🐐)    ram..goat
+1F411..1F412  ; Extended_Pictographic# E0.6   [2] (🐑..🐒)    ewe..monkey
+1F413         ; Extended_Pictographic# E1.0   [1] (🐓)       rooster
+1F414         ; Extended_Pictographic# E0.6   [1] (🐔)       chicken
+1F415         ; Extended_Pictographic# E0.7   [1] (🐕)       dog
+1F416         ; Extended_Pictographic# E1.0   [1] (🐖)       pig
+1F417..1F429  ; Extended_Pictographic# E0.6  [19] (🐗..🐩)    boar..poodle
+1F42A         ; Extended_Pictographic# E1.0   [1] (🐪)       camel
+1F42B..1F43E  ; Extended_Pictographic# E0.6  [20] (🐫..🐾)    two-hump camel..paw prints
+1F43F         ; Extended_Pictographic# E0.7   [1] (🐿️)       chipmunk
+1F440         ; Extended_Pictographic# E0.6   [1] (👀)       eyes
+1F441         ; Extended_Pictographic# E0.7   [1] (👁️)       eye
+1F442..1F464  ; Extended_Pictographic# E0.6  [35] (👂..👤)    ear..bust in silhouette
+1F465         ; Extended_Pictographic# E1.0   [1] (👥)       busts in silhouette
+1F466..1F46B  ; Extended_Pictographic# E0.6   [6] (👦..👫)    boy..woman and man holding hands
+1F46C..1F46D  ; Extended_Pictographic# E1.0   [2] (👬..👭)    men holding hands..women holding hands
+1F46E..1F4AC  ; Extended_Pictographic# E0.6  [63] (👮..💬)    police officer..speech balloon
+1F4AD         ; Extended_Pictographic# E1.0   [1] (💭)       thought balloon
+1F4AE..1F4B5  ; Extended_Pictographic# E0.6   [8] (💮..💵)    white flower..dollar banknote
+1F4B6..1F4B7  ; Extended_Pictographic# E1.0   [2] (💶..💷)    euro banknote..pound banknote
+1F4B8..1F4EB  ; Extended_Pictographic# E0.6  [52] (💸..📫)    money with wings..closed mailbox with raised flag
+1F4EC..1F4ED  ; Extended_Pictographic# E0.7   [2] (📬..📭)    open mailbox with raised flag..open mailbox with lowered flag
+1F4EE         ; Extended_Pictographic# E0.6   [1] (📮)       postbox
+1F4EF         ; Extended_Pictographic# E1.0   [1] (📯)       postal horn
+1F4F0..1F4F4  ; Extended_Pictographic# E0.6   [5] (📰..📴)    newspaper..mobile phone off
+1F4F5         ; Extended_Pictographic# E1.0   [1] (📵)       no mobile phones
+1F4F6..1F4F7  ; Extended_Pictographic# E0.6   [2] (📶..📷)    antenna bars..camera
+1F4F8         ; Extended_Pictographic# E1.0   [1] (📸)       camera with flash
+1F4F9..1F4FC  ; Extended_Pictographic# E0.6   [4] (📹..📼)    video camera..videocassette
+1F4FD         ; Extended_Pictographic# E0.7   [1] (📽️)       film projector
+1F4FE         ; Extended_Pictographic# E0.0   [1] (📾)       PORTABLE STEREO
+1F4FF..1F502  ; Extended_Pictographic# E1.0   [4] (📿..🔂)    prayer beads..repeat single button
+1F503         ; Extended_Pictographic# E0.6   [1] (🔃)       clockwise vertical arrows
+1F504..1F507  ; Extended_Pictographic# E1.0   [4] (🔄..🔇)    counterclockwise arrows button..muted speaker
+1F508         ; Extended_Pictographic# E0.7   [1] (🔈)       speaker low volume
+1F509         ; Extended_Pictographic# E1.0   [1] (🔉)       speaker medium volume
+1F50A..1F514  ; Extended_Pictographic# E0.6  [11] (🔊..🔔)    speaker high volume..bell
+1F515         ; Extended_Pictographic# E1.0   [1] (🔕)       bell with slash
+1F516..1F52B  ; Extended_Pictographic# E0.6  [22] (🔖..🔫)    bookmark..water pistol
+1F52C..1F52D  ; Extended_Pictographic# E1.0   [2] (🔬..🔭)    microscope..telescope
+1F52E..1F53D  ; Extended_Pictographic# E0.6  [16] (🔮..🔽)    crystal ball..downwards button
+1F546..1F548  ; Extended_Pictographic# E0.0   [3] (🕆..🕈)    WHITE LATIN CROSS..CELTIC CROSS
+1F549..1F54A  ; Extended_Pictographic# E0.7   [2] (🕉️..🕊️)    om..dove
+1F54B..1F54E  ; Extended_Pictographic# E1.0   [4] (🕋..🕎)    kaaba..menorah
+1F54F         ; Extended_Pictographic# E0.0   [1] (🕏)       BOWL OF HYGIEIA
+1F550..1F55B  ; Extended_Pictographic# E0.6  [12] (🕐..🕛)    one o’clock..twelve o’clock
+1F55C..1F567  ; Extended_Pictographic# E0.7  [12] (🕜..🕧)    one-thirty..twelve-thirty
+1F568..1F56E  ; Extended_Pictographic# E0.0   [7] (🕨..🕮)    RIGHT SPEAKER..BOOK
+1F56F..1F570  ; Extended_Pictographic# E0.7   [2] (🕯️..🕰️)    candle..mantelpiece clock
+1F571..1F572  ; Extended_Pictographic# E0.0   [2] (🕱..🕲)    BLACK SKULL AND CROSSBONES..NO PIRACY
+1F573..1F579  ; Extended_Pictographic# E0.7   [7] (🕳️..🕹️)    hole..joystick
+1F57A         ; Extended_Pictographic# E3.0   [1] (🕺)       man dancing
+1F57B..1F586  ; Extended_Pictographic# E0.0  [12] (🕻..🖆)    LEFT HAND TELEPHONE RECEIVER..PEN OVER STAMPED ENVELOPE
+1F587         ; Extended_Pictographic# E0.7   [1] (🖇️)       linked paperclips
+1F588..1F589  ; Extended_Pictographic# E0.0   [2] (🖈..🖉)    BLACK PUSHPIN..LOWER LEFT PENCIL
+1F58A..1F58D  ; Extended_Pictographic# E0.7   [4] (🖊️..🖍️)    pen..crayon
+1F58E..1F58F  ; Extended_Pictographic# E0.0   [2] (🖎..🖏)    LEFT WRITING HAND..TURNED OK HAND SIGN
+1F590         ; Extended_Pictographic# E0.7   [1] (🖐️)       hand with fingers splayed
+1F591..1F594  ; Extended_Pictographic# E0.0   [4] (🖑..🖔)    REVERSED RAISED HAND WITH FINGERS SPLAYED..REVERSED VICTORY HAND
+1F595..1F596  ; Extended_Pictographic# E1.0   [2] (🖕..🖖)    middle finger..vulcan salute
+1F597..1F5A3  ; Extended_Pictographic# E0.0  [13] (🖗..🖣)    WHITE DOWN POINTING LEFT HAND INDEX..BLACK DOWN POINTING BACKHAND INDEX
+1F5A4         ; Extended_Pictographic# E3.0   [1] (🖤)       black heart
+1F5A5         ; Extended_Pictographic# E0.7   [1] (🖥️)       desktop computer
+1F5A6..1F5A7  ; Extended_Pictographic# E0.0   [2] (🖦..🖧)    KEYBOARD AND MOUSE..THREE NETWORKED COMPUTERS
+1F5A8         ; Extended_Pictographic# E0.7   [1] (🖨️)       printer
+1F5A9..1F5B0  ; Extended_Pictographic# E0.0   [8] (🖩..🖰)    POCKET CALCULATOR..TWO BUTTON MOUSE
+1F5B1..1F5B2  ; Extended_Pictographic# E0.7   [2] (🖱️..🖲️)    computer mouse..trackball
+1F5B3..1F5BB  ; Extended_Pictographic# E0.0   [9] (🖳..🖻)    OLD PERSONAL COMPUTER..DOCUMENT WITH PICTURE
+1F5BC         ; Extended_Pictographic# E0.7   [1] (🖼️)       framed picture
+1F5BD..1F5C1  ; Extended_Pictographic# E0.0   [5] (🖽..🗁)    FRAME WITH TILES..OPEN FOLDER
+1F5C2..1F5C4  ; Extended_Pictographic# E0.7   [3] (🗂️..🗄️)    card index dividers..file cabinet
+1F5C5..1F5D0  ; Extended_Pictographic# E0.0  [12] (🗅..🗐)    EMPTY NOTE..PAGES
+1F5D1..1F5D3  ; Extended_Pictographic# E0.7   [3] (🗑️..🗓️)    wastebasket..spiral calendar
+1F5D4..1F5DB  ; Extended_Pictographic# E0.0   [8] (🗔..🗛)    DESKTOP WINDOW..DECREASE FONT SIZE SYMBOL
+1F5DC..1F5DE  ; Extended_Pictographic# E0.7   [3] (🗜️..🗞️)    clamp..rolled-up newspaper
+1F5DF..1F5E0  ; Extended_Pictographic# E0.0   [2] (🗟..🗠)    PAGE WITH CIRCLED TEXT..STOCK CHART
+1F5E1         ; Extended_Pictographic# E0.7   [1] (🗡️)       dagger
+1F5E2         ; Extended_Pictographic# E0.0   [1] (🗢)       LIPS
+1F5E3         ; Extended_Pictographic# E0.7   [1] (🗣️)       speaking head
+1F5E4..1F5E7  ; Extended_Pictographic# E0.0   [4] (🗤..🗧)    THREE RAYS ABOVE..THREE RAYS RIGHT
+1F5E8         ; Extended_Pictographic# E2.0   [1] (🗨️)       left speech bubble
+1F5E9..1F5EE  ; Extended_Pictographic# E0.0   [6] (🗩..🗮)    RIGHT SPEECH BUBBLE..LEFT ANGER BUBBLE
+1F5EF         ; Extended_Pictographic# E0.7   [1] (🗯️)       right anger bubble
+1F5F0..1F5F2  ; Extended_Pictographic# E0.0   [3] (🗰..🗲)    MOOD BUBBLE..LIGHTNING MOOD
+1F5F3         ; Extended_Pictographic# E0.7   [1] (🗳️)       ballot box with ballot
+1F5F4..1F5F9  ; Extended_Pictographic# E0.0   [6] (🗴..🗹)    BALLOT SCRIPT X..BALLOT BOX WITH BOLD CHECK
+1F5FA         ; Extended_Pictographic# E0.7   [1] (🗺️)       world map
+1F5FB..1F5FF  ; Extended_Pictographic# E0.6   [5] (🗻..🗿)    mount fuji..moai
+1F600         ; Extended_Pictographic# E1.0   [1] (😀)       grinning face
+1F601..1F606  ; Extended_Pictographic# E0.6   [6] (😁..😆)    beaming face with smiling eyes..grinning squinting face
+1F607..1F608  ; Extended_Pictographic# E1.0   [2] (😇..😈)    smiling face with halo..smiling face with horns
+1F609..1F60D  ; Extended_Pictographic# E0.6   [5] (😉..😍)    winking face..smiling face with heart-eyes
+1F60E         ; Extended_Pictographic# E1.0   [1] (😎)       smiling face with sunglasses
+1F60F         ; Extended_Pictographic# E0.6   [1] (😏)       smirking face
+1F610         ; Extended_Pictographic# E0.7   [1] (😐)       neutral face
+1F611         ; Extended_Pictographic# E1.0   [1] (😑)       expressionless face
+1F612..1F614  ; Extended_Pictographic# E0.6   [3] (😒..😔)    unamused face..pensive face
+1F615         ; Extended_Pictographic# E1.0   [1] (😕)       confused face
+1F616         ; Extended_Pictographic# E0.6   [1] (😖)       confounded face
+1F617         ; Extended_Pictographic# E1.0   [1] (😗)       kissing face
+1F618         ; Extended_Pictographic# E0.6   [1] (😘)       face blowing a kiss
+1F619         ; Extended_Pictographic# E1.0   [1] (😙)       kissing face with smiling eyes
+1F61A         ; Extended_Pictographic# E0.6   [1] (😚)       kissing face with closed eyes
+1F61B         ; Extended_Pictographic# E1.0   [1] (😛)       face with tongue
+1F61C..1F61E  ; Extended_Pictographic# E0.6   [3] (😜..😞)    winking face with tongue..disappointed face
+1F61F         ; Extended_Pictographic# E1.0   [1] (😟)       worried face
+1F620..1F625  ; Extended_Pictographic# E0.6   [6] (😠..😥)    angry face..sad but relieved face
+1F626..1F627  ; Extended_Pictographic# E1.0   [2] (😦..😧)    frowning face with open mouth..anguished face
+1F628..1F62B  ; Extended_Pictographic# E0.6   [4] (😨..😫)    fearful face..tired face
+1F62C         ; Extended_Pictographic# E1.0   [1] (😬)       grimacing face
+1F62D         ; Extended_Pictographic# E0.6   [1] (😭)       loudly crying face
+1F62E..1F62F  ; Extended_Pictographic# E1.0   [2] (😮..😯)    face with open mouth..hushed face
+1F630..1F633  ; Extended_Pictographic# E0.6   [4] (😰..😳)    anxious face with sweat..flushed face
+1F634         ; Extended_Pictographic# E1.0   [1] (😴)       sleeping face
+1F635         ; Extended_Pictographic# E0.6   [1] (😵)       face with crossed-out eyes
+1F636         ; Extended_Pictographic# E1.0   [1] (😶)       face without mouth
+1F637..1F640  ; Extended_Pictographic# E0.6  [10] (😷..🙀)    face with medical mask..weary cat
+1F641..1F644  ; Extended_Pictographic# E1.0   [4] (🙁..🙄)    slightly frowning face..face with rolling eyes
+1F645..1F64F  ; Extended_Pictographic# E0.6  [11] (🙅..🙏)    person gesturing NO..folded hands
+1F680         ; Extended_Pictographic# E0.6   [1] (🚀)       rocket
+1F681..1F682  ; Extended_Pictographic# E1.0   [2] (🚁..🚂)    helicopter..locomotive
+1F683..1F685  ; Extended_Pictographic# E0.6   [3] (🚃..🚅)    railway car..bullet train
+1F686         ; Extended_Pictographic# E1.0   [1] (🚆)       train
+1F687         ; Extended_Pictographic# E0.6   [1] (🚇)       metro
+1F688         ; Extended_Pictographic# E1.0   [1] (🚈)       light rail
+1F689         ; Extended_Pictographic# E0.6   [1] (🚉)       station
+1F68A..1F68B  ; Extended_Pictographic# E1.0   [2] (🚊..🚋)    tram..tram car
+1F68C         ; Extended_Pictographic# E0.6   [1] (🚌)       bus
+1F68D         ; Extended_Pictographic# E0.7   [1] (🚍)       oncoming bus
+1F68E         ; Extended_Pictographic# E1.0   [1] (🚎)       trolleybus
+1F68F         ; Extended_Pictographic# E0.6   [1] (🚏)       bus stop
+1F690         ; Extended_Pictographic# E1.0   [1] (🚐)       minibus
+1F691..1F693  ; Extended_Pictographic# E0.6   [3] (🚑..🚓)    ambulance..police car
+1F694         ; Extended_Pictographic# E0.7   [1] (🚔)       oncoming police car
+1F695         ; Extended_Pictographic# E0.6   [1] (🚕)       taxi
+1F696         ; Extended_Pictographic# E1.0   [1] (🚖)       oncoming taxi
+1F697         ; Extended_Pictographic# E0.6   [1] (🚗)       automobile
+1F698         ; Extended_Pictographic# E0.7   [1] (🚘)       oncoming automobile
+1F699..1F69A  ; Extended_Pictographic# E0.6   [2] (🚙..🚚)    sport utility vehicle..delivery truck
+1F69B..1F6A1  ; Extended_Pictographic# E1.0   [7] (🚛..🚡)    articulated lorry..aerial tramway
+1F6A2         ; Extended_Pictographic# E0.6   [1] (🚢)       ship
+1F6A3         ; Extended_Pictographic# E1.0   [1] (🚣)       person rowing boat
+1F6A4..1F6A5  ; Extended_Pictographic# E0.6   [2] (🚤..🚥)    speedboat..horizontal traffic light
+1F6A6         ; Extended_Pictographic# E1.0   [1] (🚦)       vertical traffic light
+1F6A7..1F6AD  ; Extended_Pictographic# E0.6   [7] (🚧..🚭)    construction..no smoking
+1F6AE..1F6B1  ; Extended_Pictographic# E1.0   [4] (🚮..🚱)    litter in bin sign..non-potable water
+1F6B2         ; Extended_Pictographic# E0.6   [1] (🚲)       bicycle
+1F6B3..1F6B5  ; Extended_Pictographic# E1.0   [3] (🚳..🚵)    no bicycles..person mountain biking
+1F6B6         ; Extended_Pictographic# E0.6   [1] (🚶)       person walking
+1F6B7..1F6B8  ; Extended_Pictographic# E1.0   [2] (🚷..🚸)    no pedestrians..children crossing
+1F6B9..1F6BE  ; Extended_Pictographic# E0.6   [6] (🚹..🚾)    men’s room..water closet
+1F6BF         ; Extended_Pictographic# E1.0   [1] (🚿)       shower
+1F6C0         ; Extended_Pictographic# E0.6   [1] (🛀)       person taking bath
+1F6C1..1F6C5  ; Extended_Pictographic# E1.0   [5] (🛁..🛅)    bathtub..left luggage
+1F6C6..1F6CA  ; Extended_Pictographic# E0.0   [5] (🛆..🛊)    TRIANGLE WITH ROUNDED CORNERS..GIRLS SYMBOL
+1F6CB         ; Extended_Pictographic# E0.7   [1] (🛋️)       couch and lamp
+1F6CC         ; Extended_Pictographic# E1.0   [1] (🛌)       person in bed
+1F6CD..1F6CF  ; Extended_Pictographic# E0.7   [3] (🛍️..🛏️)    shopping bags..bed
+1F6D0         ; Extended_Pictographic# E1.0   [1] (🛐)       place of worship
+1F6D1..1F6D2  ; Extended_Pictographic# E3.0   [2] (🛑..🛒)    stop sign..shopping cart
+1F6D3..1F6D4  ; Extended_Pictographic# E0.0   [2] (🛓..🛔)    STUPA..PAGODA
+1F6D5         ; Extended_Pictographic# E12.0  [1] (🛕)       hindu temple
+1F6D6..1F6D7  ; Extended_Pictographic# E13.0  [2] (🛖..🛗)    hut..elevator
+1F6D8..1F6DB  ; Extended_Pictographic# E0.0   [4] (🛘..🛛)    <reserved-1F6D8>..<reserved-1F6DB>
+1F6DC         ; Extended_Pictographic# E15.0  [1] (🛜)       wireless
+1F6DD..1F6DF  ; Extended_Pictographic# E14.0  [3] (🛝..🛟)    playground slide..ring buoy
+1F6E0..1F6E5  ; Extended_Pictographic# E0.7   [6] (🛠️..🛥️)    hammer and wrench..motor boat
+1F6E6..1F6E8  ; Extended_Pictographic# E0.0   [3] (🛦..🛨)    UP-POINTING MILITARY AIRPLANE..UP-POINTING SMALL AIRPLANE
+1F6E9         ; Extended_Pictographic# E0.7   [1] (🛩️)       small airplane
+1F6EA         ; Extended_Pictographic# E0.0   [1] (🛪)       NORTHEAST-POINTING AIRPLANE
+1F6EB..1F6EC  ; Extended_Pictographic# E1.0   [2] (🛫..🛬)    airplane departure..airplane arrival
+1F6ED..1F6EF  ; Extended_Pictographic# E0.0   [3] (🛭..🛯)    <reserved-1F6ED>..<reserved-1F6EF>
+1F6F0         ; Extended_Pictographic# E0.7   [1] (🛰️)       satellite
+1F6F1..1F6F2  ; Extended_Pictographic# E0.0   [2] (🛱..🛲)    ONCOMING FIRE ENGINE..DIESEL LOCOMOTIVE
+1F6F3         ; Extended_Pictographic# E0.7   [1] (🛳️)       passenger ship
+1F6F4..1F6F6  ; Extended_Pictographic# E3.0   [3] (🛴..🛶)    kick scooter..canoe
+1F6F7..1F6F8  ; Extended_Pictographic# E5.0   [2] (🛷..🛸)    sled..flying saucer
+1F6F9         ; Extended_Pictographic# E11.0  [1] (🛹)       skateboard
+1F6FA         ; Extended_Pictographic# E12.0  [1] (🛺)       auto rickshaw
+1F6FB..1F6FC  ; Extended_Pictographic# E13.0  [2] (🛻..🛼)    pickup truck..roller skate
+1F6FD..1F6FF  ; Extended_Pictographic# E0.0   [3] (🛽..🛿)    <reserved-1F6FD>..<reserved-1F6FF>
+1F774..1F77F  ; Extended_Pictographic# E0.0  [12] (🝴..🝿)    LOT OF FORTUNE..ORCUS
+1F7D5..1F7DF  ; Extended_Pictographic# E0.0  [11] (🟕..🟟)    CIRCLED TRIANGLE..<reserved-1F7DF>
+1F7E0..1F7EB  ; Extended_Pictographic# E12.0 [12] (🟠..🟫)    orange circle..brown square
+1F7EC..1F7EF  ; Extended_Pictographic# E0.0   [4] (🟬..🟯)    <reserved-1F7EC>..<reserved-1F7EF>
+1F7F0         ; Extended_Pictographic# E14.0  [1] (🟰)       heavy equals sign
+1F7F1..1F7FF  ; Extended_Pictographic# E0.0  [15] (🟱..🟿)    <reserved-1F7F1>..<reserved-1F7FF>
+1F80C..1F80F  ; Extended_Pictographic# E0.0   [4] (🠌..🠏)    <reserved-1F80C>..<reserved-1F80F>
+1F848..1F84F  ; Extended_Pictographic# E0.0   [8] (🡈..🡏)    <reserved-1F848>..<reserved-1F84F>
+1F85A..1F85F  ; Extended_Pictographic# E0.0   [6] (🡚..🡟)    <reserved-1F85A>..<reserved-1F85F>
+1F888..1F88F  ; Extended_Pictographic# E0.0   [8] (🢈..🢏)    <reserved-1F888>..<reserved-1F88F>
+1F8AE..1F8FF  ; Extended_Pictographic# E0.0  [82] (🢮..🣿)    <reserved-1F8AE>..<reserved-1F8FF>
+1F90C         ; Extended_Pictographic# E13.0  [1] (🤌)       pinched fingers
+1F90D..1F90F  ; Extended_Pictographic# E12.0  [3] (🤍..🤏)    white heart..pinching hand
+1F910..1F918  ; Extended_Pictographic# E1.0   [9] (🤐..🤘)    zipper-mouth face..sign of the horns
+1F919..1F91E  ; Extended_Pictographic# E3.0   [6] (🤙..🤞)    call me hand..crossed fingers
+1F91F         ; Extended_Pictographic# E5.0   [1] (🤟)       love-you gesture
+1F920..1F927  ; Extended_Pictographic# E3.0   [8] (🤠..🤧)    cowboy hat face..sneezing face
+1F928..1F92F  ; Extended_Pictographic# E5.0   [8] (🤨..🤯)    face with raised eyebrow..exploding head
+1F930         ; Extended_Pictographic# E3.0   [1] (🤰)       pregnant woman
+1F931..1F932  ; Extended_Pictographic# E5.0   [2] (🤱..🤲)    breast-feeding..palms up together
+1F933..1F93A  ; Extended_Pictographic# E3.0   [8] (🤳..🤺)    selfie..person fencing
+1F93C..1F93E  ; Extended_Pictographic# E3.0   [3] (🤼..🤾)    people wrestling..person playing handball
+1F93F         ; Extended_Pictographic# E12.0  [1] (🤿)       diving mask
+1F940..1F945  ; Extended_Pictographic# E3.0   [6] (🥀..🥅)    wilted flower..goal net
+1F947..1F94B  ; Extended_Pictographic# E3.0   [5] (🥇..🥋)    1st place medal..martial arts uniform
+1F94C         ; Extended_Pictographic# E5.0   [1] (🥌)       curling stone
+1F94D..1F94F  ; Extended_Pictographic# E11.0  [3] (🥍..🥏)    lacrosse..flying disc
+1F950..1F95E  ; Extended_Pictographic# E3.0  [15] (🥐..🥞)    croissant..pancakes
+1F95F..1F96B  ; Extended_Pictographic# E5.0  [13] (🥟..🥫)    dumpling..canned food
+1F96C..1F970  ; Extended_Pictographic# E11.0  [5] (🥬..🥰)    leafy green..smiling face with hearts
+1F971         ; Extended_Pictographic# E12.0  [1] (🥱)       yawning face
+1F972         ; Extended_Pictographic# E13.0  [1] (🥲)       smiling face with tear
+1F973..1F976  ; Extended_Pictographic# E11.0  [4] (🥳..🥶)    partying face..cold face
+1F977..1F978  ; Extended_Pictographic# E13.0  [2] (🥷..🥸)    ninja..disguised face
+1F979         ; Extended_Pictographic# E14.0  [1] (🥹)       face holding back tears
+1F97A         ; Extended_Pictographic# E11.0  [1] (🥺)       pleading face
+1F97B         ; Extended_Pictographic# E12.0  [1] (🥻)       sari
+1F97C..1F97F  ; Extended_Pictographic# E11.0  [4] (🥼..🥿)    lab coat..flat shoe
+1F980..1F984  ; Extended_Pictographic# E1.0   [5] (🦀..🦄)    crab..unicorn
+1F985..1F991  ; Extended_Pictographic# E3.0  [13] (🦅..🦑)    eagle..squid
+1F992..1F997  ; Extended_Pictographic# E5.0   [6] (🦒..🦗)    giraffe..cricket
+1F998..1F9A2  ; Extended_Pictographic# E11.0 [11] (🦘..🦢)    kangaroo..swan
+1F9A3..1F9A4  ; Extended_Pictographic# E13.0  [2] (🦣..🦤)    mammoth..dodo
+1F9A5..1F9AA  ; Extended_Pictographic# E12.0  [6] (🦥..🦪)    sloth..oyster
+1F9AB..1F9AD  ; Extended_Pictographic# E13.0  [3] (🦫..🦭)    beaver..seal
+1F9AE..1F9AF  ; Extended_Pictographic# E12.0  [2] (🦮..🦯)    guide dog..white cane
+1F9B0..1F9B9  ; Extended_Pictographic# E11.0 [10] (🦰..🦹)    red hair..supervillain
+1F9BA..1F9BF  ; Extended_Pictographic# E12.0  [6] (🦺..🦿)    safety vest..mechanical leg
+1F9C0         ; Extended_Pictographic# E1.0   [1] (🧀)       cheese wedge
+1F9C1..1F9C2  ; Extended_Pictographic# E11.0  [2] (🧁..🧂)    cupcake..salt
+1F9C3..1F9CA  ; Extended_Pictographic# E12.0  [8] (🧃..🧊)    beverage box..ice
+1F9CB         ; Extended_Pictographic# E13.0  [1] (🧋)       bubble tea
+1F9CC         ; Extended_Pictographic# E14.0  [1] (🧌)       troll
+1F9CD..1F9CF  ; Extended_Pictographic# E12.0  [3] (🧍..🧏)    person standing..deaf person
+1F9D0..1F9E6  ; Extended_Pictographic# E5.0  [23] (🧐..🧦)    face with monocle..socks
+1F9E7..1F9FF  ; Extended_Pictographic# E11.0 [25] (🧧..🧿)    red envelope..nazar amulet
+1FA00..1FA6F  ; Extended_Pictographic# E0.0 [112] (🨀..🩯)    NEUTRAL CHESS KING..<reserved-1FA6F>
+1FA70..1FA73  ; Extended_Pictographic# E12.0  [4] (🩰..🩳)    ballet shoes..shorts
+1FA74         ; Extended_Pictographic# E13.0  [1] (🩴)       thong sandal
+1FA75..1FA77  ; Extended_Pictographic# E15.0  [3] (🩵..🩷)    light blue heart..pink heart
+1FA78..1FA7A  ; Extended_Pictographic# E12.0  [3] (🩸..🩺)    drop of blood..stethoscope
+1FA7B..1FA7C  ; Extended_Pictographic# E14.0  [2] (🩻..🩼)    x-ray..crutch
+1FA7D..1FA7F  ; Extended_Pictographic# E0.0   [3] (🩽..🩿)    <reserved-1FA7D>..<reserved-1FA7F>
+1FA80..1FA82  ; Extended_Pictographic# E12.0  [3] (🪀..🪂)    yo-yo..parachute
+1FA83..1FA86  ; Extended_Pictographic# E13.0  [4] (🪃..🪆)    boomerang..nesting dolls
+1FA87..1FA88  ; Extended_Pictographic# E15.0  [2] (🪇..🪈)    maracas..flute
+1FA89..1FA8F  ; Extended_Pictographic# E0.0   [7] (🪉..🪏)    <reserved-1FA89>..<reserved-1FA8F>
+1FA90..1FA95  ; Extended_Pictographic# E12.0  [6] (🪐..🪕)    ringed planet..banjo
+1FA96..1FAA8  ; Extended_Pictographic# E13.0 [19] (🪖..🪨)    military helmet..rock
+1FAA9..1FAAC  ; Extended_Pictographic# E14.0  [4] (🪩..🪬)    mirror ball..hamsa
+1FAAD..1FAAF  ; Extended_Pictographic# E15.0  [3] (🪭..🪯)    folding hand fan..khanda
+1FAB0..1FAB6  ; Extended_Pictographic# E13.0  [7] (🪰..🪶)    fly..feather
+1FAB7..1FABA  ; Extended_Pictographic# E14.0  [4] (🪷..🪺)    lotus..nest with eggs
+1FABB..1FABD  ; Extended_Pictographic# E15.0  [3] (🪻..🪽)    hyacinth..wing
+1FABE         ; Extended_Pictographic# E0.0   [1] (🪾)       <reserved-1FABE>
+1FABF         ; Extended_Pictographic# E15.0  [1] (🪿)       goose
+1FAC0..1FAC2  ; Extended_Pictographic# E13.0  [3] (🫀..🫂)    anatomical heart..people hugging
+1FAC3..1FAC5  ; Extended_Pictographic# E14.0  [3] (🫃..🫅)    pregnant man..person with crown
+1FAC6..1FACD  ; Extended_Pictographic# E0.0   [8] (🫆..🫍)    <reserved-1FAC6>..<reserved-1FACD>
+1FACE..1FACF  ; Extended_Pictographic# E15.0  [2] (🫎..🫏)    moose..donkey
+1FAD0..1FAD6  ; Extended_Pictographic# E13.0  [7] (🫐..🫖)    blueberries..teapot
+1FAD7..1FAD9  ; Extended_Pictographic# E14.0  [3] (🫗..🫙)    pouring liquid..jar
+1FADA..1FADB  ; Extended_Pictographic# E15.0  [2] (🫚..🫛)    ginger root..pea pod
+1FADC..1FADF  ; Extended_Pictographic# E0.0   [4] (🫜..🫟)    <reserved-1FADC>..<reserved-1FADF>
+1FAE0..1FAE7  ; Extended_Pictographic# E14.0  [8] (🫠..🫧)    melting face..bubbles
+1FAE8         ; Extended_Pictographic# E15.0  [1] (🫨)       shaking face
+1FAE9..1FAEF  ; Extended_Pictographic# E0.0   [7] (🫩..🫯)    <reserved-1FAE9>..<reserved-1FAEF>
+1FAF0..1FAF6  ; Extended_Pictographic# E14.0  [7] (🫰..🫶)    hand with index finger and thumb crossed..heart hands
+1FAF7..1FAF8  ; Extended_Pictographic# E15.0  [2] (🫷..🫸)    leftwards pushing hand..rightwards pushing hand
+1FAF9..1FAFF  ; Extended_Pictographic# E0.0   [7] (🫹..🫿)    <reserved-1FAF9>..<reserved-1FAFF>
+1FC00..1FFFD  ; Extended_Pictographic# E0.0[1022] (🰀..🿽)    <reserved-1FC00>..<reserved-1FFFD>
+
+# Total elements: 3537
+
+#EOF
diff --git a/app/src/main/cpp/libcxx/utils/gdb/libcxx/printers.py b/app/src/main/cpp/libcxx/utils/gdb/libcxx/printers.py
new file mode 100644
index 0000000..e62c367
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/gdb/libcxx/printers.py
@@ -0,0 +1,1031 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+"""GDB pretty-printers for libc++.
+
+These should work for objects compiled with either the stable ABI or the unstable ABI.
+"""
+
+from __future__ import print_function
+
+import math
+import re
+import gdb
+
+# One under-documented feature of the gdb pretty-printer API
+# is that clients can call any other member of the API
+# before they call to_string.
+# Therefore all self.FIELDs must be set in the pretty-printer's
+# __init__ function.
+
+_void_pointer_type = gdb.lookup_type("void").pointer()
+
+
+_long_int_type = gdb.lookup_type("unsigned long long")
+
+_libcpp_big_endian = False
+
+def addr_as_long(addr):
+    return int(addr.cast(_long_int_type))
+
+
+# The size of a pointer in bytes.
+_pointer_size = _void_pointer_type.sizeof
+
+
+def _remove_cxx_namespace(typename):
+    """Removed libc++ specific namespace from the type.
+
+    Arguments:
+      typename(string): A type, such as std::__u::something.
+
+    Returns:
+      A string without the libc++ specific part, such as std::something.
+    """
+
+    return re.sub("std::__.*?::", "std::", typename)
+
+
+def _remove_generics(typename):
+    """Remove generics part of the type. Assumes typename is not empty.
+
+    Arguments:
+      typename(string): A type such as std::my_collection<element>.
+
+    Returns:
+      The prefix up to the generic part, such as std::my_collection.
+    """
+
+    match = re.match("^([^<]+)", typename)
+    return match.group(1)
+
+
+def _cc_field(node):
+    """Previous versions of libcxx had inconsistent field naming naming. Handle
+    both types.
+    """
+    try:
+        return node["__value_"]["__cc_"]
+    except:
+        return node["__value_"]["__cc"]
+
+
+def _data_field(node):
+    """Previous versions of libcxx had inconsistent field naming naming. Handle
+    both types.
+    """
+    try:
+        return node["__data_"]
+    except:
+        return node["__data"]
+
+
+def _size_field(node):
+    """Previous versions of libcxx had inconsistent field naming naming. Handle
+    both types.
+    """
+    try:
+        return node["__size_"]
+    except:
+        return node["__size"]
+
+
+# Some common substitutions on the types to reduce visual clutter (A user who
+# wants to see the actual details can always use print/r).
+_common_substitutions = [
+    ("std::basic_string<char, std::char_traits<char>, std::allocator<char> >",
+     "std::string"),
+    ("std::basic_string_view<char, std::char_traits<char> >",
+     "std::string_view"),
+]
+
+
+def _prettify_typename(gdb_type):
+    """Returns a pretty name for the type, or None if no name can be found.
+
+    Arguments:
+      gdb_type(gdb.Type): A type object.
+
+    Returns:
+      A string, without type_defs, libc++ namespaces, and common substitutions
+      applied.
+    """
+
+    type_without_typedefs = gdb_type.strip_typedefs()
+    typename = type_without_typedefs.name or type_without_typedefs.tag or \
+        str(type_without_typedefs)
+    result = _remove_cxx_namespace(typename)
+    for find_str, subst_str in _common_substitutions:
+        result = re.sub(find_str, subst_str, result)
+    return result
+
+
+def _typename_for_nth_generic_argument(gdb_type, n):
+    """Returns a pretty string for the nth argument of the given type.
+
+    Arguments:
+      gdb_type(gdb.Type): A type object, such as the one for std::map<int, int>
+      n: The (zero indexed) index of the argument to return.
+
+    Returns:
+      A string for the nth argument, such a "std::string"
+    """
+    element_type = gdb_type.template_argument(n)
+    return _prettify_typename(element_type)
+
+
+def _typename_with_n_generic_arguments(gdb_type, n):
+    """Return a string for the type with the first n (1, ...) generic args."""
+
+    base_type = _remove_generics(_prettify_typename(gdb_type))
+    arg_list = [base_type]
+    template = "%s<"
+    for i in range(n):
+        arg_list.append(_typename_for_nth_generic_argument(gdb_type, i))
+        template += "%s, "
+    result = (template[:-2] + ">") % tuple(arg_list)
+    return result
+
+
+def _typename_with_first_generic_argument(gdb_type):
+    return _typename_with_n_generic_arguments(gdb_type, 1)
+
+
+class StdTuplePrinter(object):
+    """Print a std::tuple."""
+
+    class _Children(object):
+        """Class to iterate over the tuple's children."""
+
+        def __init__(self, val):
+            self.val = val
+            self.child_iter = iter(self.val["__base_"].type.fields())
+            self.count = 0
+
+        def __iter__(self):
+            return self
+
+        def __next__(self):
+            # child_iter raises StopIteration when appropriate.
+            field_name = next(self.child_iter)
+            child = self.val["__base_"][field_name]["__value_"]
+            self.count += 1
+            return ("[%d]" % self.count, child)
+
+        next = __next__  # Needed for GDB built against Python 2.7.
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        if not self.val.type.fields():
+            return "empty %s" % typename
+        return "%s containing" % typename
+
+    def children(self):
+        if not self.val.type.fields():
+            return iter(())
+        return self._Children(self.val)
+
+
+def _get_base_subobject(child_class_value, index=0):
+    """Returns the object's value in the form of the parent class at index.
+
+    This function effectively casts the child_class_value to the base_class's
+    type, but the type-to-cast to is stored in the field at index, and once
+    we know the field, we can just return the data.
+
+    Args:
+      child_class_value: the value to cast
+      index: the parent class index
+
+    Raises:
+      Exception: field at index was not a base-class field.
+    """
+
+    field = child_class_value.type.fields()[index]
+    if not field.is_base_class:
+        raise Exception("Not a base-class field.")
+    return child_class_value[field]
+
+
+def _value_of_pair_first(value):
+    """Convenience for _get_base_subobject, for the common case."""
+    return _get_base_subobject(value, 0)["__value_"]
+
+
+class StdStringPrinter(object):
+    """Print a std::string."""
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        """Build a python string from the data whether stored inline or separately."""
+        value_field = _value_of_pair_first(self.val["__r_"])
+        short_field = value_field["__s"]
+        short_size = short_field["__size_"]
+        if short_field["__is_long_"]:
+            long_field = value_field["__l"]
+            data = long_field["__data_"]
+            size = long_field["__size_"]
+        else:
+            data = short_field["__data_"]
+            size = short_field["__size_"]
+        return data.lazy_string(length=size)
+
+    def display_hint(self):
+        return "string"
+
+
+class StdStringViewPrinter(object):
+    """Print a std::string_view."""
+
+    def __init__(self, val):
+      self.val = val
+
+    def display_hint(self):
+      return "string"
+
+    def to_string(self):  # pylint: disable=g-bad-name
+      """GDB calls this to compute the pretty-printed form."""
+
+      ptr = _data_field(self.val)
+      ptr = ptr.cast(ptr.type.target().strip_typedefs().pointer())
+      size = _size_field(self.val)
+      return ptr.lazy_string(length=size)
+
+
+class StdUniquePtrPrinter(object):
+    """Print a std::unique_ptr."""
+
+    def __init__(self, val):
+        self.val = val
+        self.addr = _value_of_pair_first(self.val["__ptr_"])
+        self.pointee_type = self.val.type.template_argument(0)
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        if not self.addr:
+            return "%s is nullptr" % typename
+        return ("%s<%s> containing" %
+                (typename,
+                 _remove_generics(_prettify_typename(self.pointee_type))))
+
+    def __iter__(self):
+        if self.addr:
+            yield "__ptr_", self.addr.cast(self.pointee_type.pointer())
+
+    def children(self):
+        return self
+
+
+class StdSharedPointerPrinter(object):
+    """Print a std::shared_ptr."""
+
+    def __init__(self, val):
+        self.val = val
+        self.addr = self.val["__ptr_"]
+
+    def to_string(self):
+        """Returns self as a string."""
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        pointee_type = _remove_generics(
+            _prettify_typename(self.val.type.template_argument(0)))
+        if not self.addr:
+            return "%s is nullptr" % typename
+        refcount = self.val["__cntrl_"]
+        if refcount != 0:
+            try:
+                usecount = refcount["__shared_owners_"] + 1
+                weakcount = refcount["__shared_weak_owners_"]
+                if usecount == 0:
+                    state = "expired, weak %d" % weakcount
+                else:
+                    state = "count %d, weak %d" % (usecount, weakcount)
+            except:
+                # Debug info for a class with virtual functions is emitted
+                # in the same place as its key function. That means that
+                # for std::shared_ptr, __shared_owners_ is emitted into
+                # into libcxx.[so|a] itself, rather than into the shared_ptr
+                # instantiation point. So if libcxx.so was built without
+                # debug info, these fields will be missing.
+                state = "count ?, weak ? (libc++ missing debug info)"
+        return "%s<%s> %s containing" % (typename, pointee_type, state)
+
+    def __iter__(self):
+        if self.addr:
+            yield "__ptr_", self.addr
+
+    def children(self):
+        return self
+
+
+class StdVectorPrinter(object):
+    """Print a std::vector."""
+
+    class _VectorBoolIterator(object):
+        """Class to iterate over the bool vector's children."""
+
+        def __init__(self, begin, size, bits_per_word):
+            self.item = begin
+            self.size = size
+            self.bits_per_word = bits_per_word
+            self.count = 0
+            self.offset = 0
+
+        def __iter__(self):
+            return self
+
+        def __next__(self):
+            """Retrieve the next element."""
+
+            self.count += 1
+            if self.count > self.size:
+                raise StopIteration
+            entry = self.item.dereference()
+            if entry & (1 << self.offset):
+                outbit = 1
+            else:
+                outbit = 0
+            self.offset += 1
+            if self.offset >= self.bits_per_word:
+                self.item += 1
+                self.offset = 0
+            return ("[%d]" % self.count, outbit)
+
+        next = __next__  # Needed for GDB built against Python 2.7.
+
+    class _VectorIterator(object):
+        """Class to iterate over the non-bool vector's children."""
+
+        def __init__(self, begin, end):
+            self.item = begin
+            self.end = end
+            self.count = 0
+
+        def __iter__(self):
+            return self
+
+        def __next__(self):
+            self.count += 1
+            if self.item == self.end:
+                raise StopIteration
+            entry = self.item.dereference()
+            self.item += 1
+            return ("[%d]" % self.count, entry)
+
+        next = __next__  # Needed for GDB built against Python 2.7.
+
+    def __init__(self, val):
+        """Set val, length, capacity, and iterator for bool and normal vectors."""
+        self.val = val
+        self.typename = _remove_generics(_prettify_typename(val.type))
+        begin = self.val["__begin_"]
+        if self.val.type.template_argument(0).code == gdb.TYPE_CODE_BOOL:
+            self.typename += "<bool>"
+            self.length = self.val["__size_"]
+            bits_per_word = self.val["__bits_per_word"]
+            self.capacity = _value_of_pair_first(
+                self.val["__cap_alloc_"]) * bits_per_word
+            self.iterator = self._VectorBoolIterator(
+                begin, self.length, bits_per_word)
+        else:
+            end = self.val["__end_"]
+            self.length = end - begin
+            self.capacity = _get_base_subobject(
+                self.val["__end_cap_"])["__value_"] - begin
+            self.iterator = self._VectorIterator(begin, end)
+
+    def to_string(self):
+        return ("%s of length %d, capacity %d" %
+                (self.typename, self.length, self.capacity))
+
+    def children(self):
+        return self.iterator
+
+    def display_hint(self):
+        return "array"
+
+
+class StdBitsetPrinter(object):
+    """Print a std::bitset."""
+
+    def __init__(self, val):
+        self.val = val
+        self.n_words = int(self.val["__n_words"])
+        self.bits_per_word = int(self.val["__bits_per_word"])
+        self.bit_count = self.val.type.template_argument(0)
+        if self.n_words == 1:
+            self.values = [int(self.val["__first_"])]
+        else:
+            self.values = [int(self.val["__first_"][index])
+                           for index in range(self.n_words)]
+
+    def to_string(self):
+        typename = _prettify_typename(self.val.type)
+        return "%s" % typename
+
+    def _list_it(self):
+        for bit in range(self.bit_count):
+            word = bit // self.bits_per_word
+            word_bit = bit % self.bits_per_word
+            if self.values[word] & (1 << word_bit):
+                yield ("[%d]" % bit, 1)
+
+    def __iter__(self):
+        return self._list_it()
+
+    def children(self):
+        return self
+
+
+class StdDequePrinter(object):
+    """Print a std::deque."""
+
+    def __init__(self, val):
+        self.val = val
+        self.size = int(_value_of_pair_first(val["__size_"]))
+        self.start_ptr = self.val["__map_"]["__begin_"]
+        self.first_block_start_index = int(self.val["__start_"])
+        self.node_type = self.start_ptr.type
+        self.block_size = self._calculate_block_size(
+            val.type.template_argument(0))
+
+    def _calculate_block_size(self, element_type):
+        """Calculates the number of elements in a full block."""
+        size = element_type.sizeof
+        # Copied from struct __deque_block_size implementation of libcxx.
+        return 4096 / size if size < 256 else 16
+
+    def _bucket_it(self, start_addr, start_index, end_index):
+        for i in range(start_index, end_index):
+            yield i, (start_addr.dereference() + i).dereference()
+
+    def _list_it(self):
+        """Primary iteration worker."""
+        num_emitted = 0
+        current_addr = self.start_ptr
+        start_index = self.first_block_start_index
+        while num_emitted < self.size:
+            end_index = min(start_index + self.size -
+                            num_emitted, self.block_size)
+            for _, elem in self._bucket_it(current_addr, start_index, end_index):
+                yield "", elem
+            num_emitted += end_index - start_index
+            current_addr = gdb.Value(addr_as_long(current_addr) + _pointer_size) \
+                              .cast(self.node_type)
+            start_index = 0
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        if self.size:
+            return "%s with %d elements" % (typename, self.size)
+        return "%s is empty" % typename
+
+    def __iter__(self):
+        return self._list_it()
+
+    def children(self):
+        return self
+
+    def display_hint(self):
+        return "array"
+
+
+class StdListPrinter(object):
+    """Print a std::list."""
+
+    def __init__(self, val):
+        self.val = val
+        size_alloc_field = self.val["__size_alloc_"]
+        self.size = int(_value_of_pair_first(size_alloc_field))
+        dummy_node = self.val["__end_"]
+        self.nodetype = gdb.lookup_type(
+            re.sub("__list_node_base", "__list_node",
+                   str(dummy_node.type.strip_typedefs()))).pointer()
+        self.first_node = dummy_node["__next_"]
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        if self.size:
+            return "%s with %d elements" % (typename, self.size)
+        return "%s is empty" % typename
+
+    def _list_iter(self):
+        current_node = self.first_node
+        for _ in range(self.size):
+            yield "", current_node.cast(self.nodetype).dereference()["__value_"]
+            current_node = current_node.dereference()["__next_"]
+
+    def __iter__(self):
+        return self._list_iter()
+
+    def children(self):
+        return self if self.nodetype else iter(())
+
+    def display_hint(self):
+        return "array"
+
+
+class StdQueueOrStackPrinter(object):
+    """Print a std::queue or std::stack."""
+
+    def __init__(self, val):
+        self.val = val
+        self.underlying = val["c"]
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        return "%s wrapping" % typename
+
+    def children(self):
+        return iter([("", self.underlying)])
+
+    def display_hint(self):
+        return "array"
+
+
+class StdPriorityQueuePrinter(object):
+    """Print a std::priority_queue."""
+
+    def __init__(self, val):
+        self.val = val
+        self.underlying = val["c"]
+
+    def to_string(self):
+        # TODO(tamur): It would be nice to print the top element. The technical
+        # difficulty is that, the implementation refers to the underlying
+        # container, which is a generic class. libstdcxx pretty printers do not
+        # print the top element.
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        return "%s wrapping" % typename
+
+    def children(self):
+        return iter([("", self.underlying)])
+
+    def display_hint(self):
+        return "array"
+
+
+class RBTreeUtils(object):
+    """Utility class for std::(multi)map, and std::(multi)set and iterators."""
+
+    def __init__(self, cast_type, root):
+        self.cast_type = cast_type
+        self.root = root
+
+    def left_child(self, node):
+        result = node.cast(self.cast_type).dereference()["__left_"]
+        return result
+
+    def right_child(self, node):
+        result = node.cast(self.cast_type).dereference()["__right_"]
+        return result
+
+    def parent(self, node):
+        """Return the parent of node, if it exists."""
+        # If this is the root, then from the algorithm's point of view, it has no
+        # parent.
+        if node == self.root:
+            return None
+
+        # We don't have enough information to tell if this is the end_node (which
+        # doesn't have a __parent_ field), or the root (which doesn't have a parent
+        # from the algorithm's point of view), so cast_type may not be correct for
+        # this particular node. Use heuristics.
+
+        # The end_node's left child is the root. Note that when printing interators
+        # in isolation, the root is unknown.
+        if self.left_child(node) == self.root:
+            return None
+
+        parent = node.cast(self.cast_type).dereference()["__parent_"]
+        # If the value at the offset of __parent_ doesn't look like a valid pointer,
+        # then assume that node is the end_node (and therefore has no parent).
+        # End_node type has a pointer embedded, so should have pointer alignment.
+        if addr_as_long(parent) % _void_pointer_type.alignof:
+            return None
+        # This is ugly, but the only other option is to dereference an invalid
+        # pointer.  0x8000 is fairly arbitrary, but has had good results in
+        # practice.  If there was a way to tell if a pointer is invalid without
+        # actually dereferencing it and spewing error messages, that would be ideal.
+        if parent < 0x8000:
+            return None
+        return parent
+
+    def is_left_child(self, node):
+        parent = self.parent(node)
+        return parent is not None and self.left_child(parent) == node
+
+    def is_right_child(self, node):
+        parent = self.parent(node)
+        return parent is not None and self.right_child(parent) == node
+
+
+class AbstractRBTreePrinter(object):
+    """Abstract super class for std::(multi)map, and std::(multi)set."""
+
+    def __init__(self, val):
+        self.val = val
+        tree = self.val["__tree_"]
+        self.size = int(_value_of_pair_first(tree["__pair3_"]))
+        dummy_root = tree["__pair1_"]
+        root = _value_of_pair_first(dummy_root)["__left_"]
+        cast_type = self._init_cast_type(val.type)
+        self.util = RBTreeUtils(cast_type, root)
+
+    def _get_key_value(self, node):
+        """Subclasses should override to return a list of values to yield."""
+        raise NotImplementedError
+
+    def _traverse(self):
+        """Traverses the binary search tree in order."""
+        current = self.util.root
+        skip_left_child = False
+        while True:
+            if not skip_left_child and self.util.left_child(current):
+                current = self.util.left_child(current)
+                continue
+            skip_left_child = False
+            for key_value in self._get_key_value(current):
+                yield "", key_value
+            right_child = self.util.right_child(current)
+            if right_child:
+                current = right_child
+                continue
+            while self.util.is_right_child(current):
+                current = self.util.parent(current)
+            if self.util.is_left_child(current):
+                current = self.util.parent(current)
+                skip_left_child = True
+                continue
+            break
+
+    def __iter__(self):
+        return self._traverse()
+
+    def children(self):
+        return self if self.util.cast_type and self.size > 0 else iter(())
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        if self.size:
+            return "%s with %d elements" % (typename, self.size)
+        return "%s is empty" % typename
+
+
+class StdMapPrinter(AbstractRBTreePrinter):
+    """Print a std::map or std::multimap."""
+
+    def _init_cast_type(self, val_type):
+        map_it_type = gdb.lookup_type(
+            str(val_type.strip_typedefs()) + "::iterator").strip_typedefs()
+        tree_it_type = map_it_type.template_argument(0)
+        node_ptr_type = tree_it_type.template_argument(1)
+        return node_ptr_type
+
+    def display_hint(self):
+        return "map"
+
+    def _get_key_value(self, node):
+        key_value = _cc_field(node.cast(self.util.cast_type).dereference())
+        return [key_value["first"], key_value["second"]]
+
+
+class StdSetPrinter(AbstractRBTreePrinter):
+    """Print a std::set."""
+
+    def _init_cast_type(self, val_type):
+        set_it_type = gdb.lookup_type(
+            str(val_type.strip_typedefs()) + "::iterator").strip_typedefs()
+        node_ptr_type = set_it_type.template_argument(1)
+        return node_ptr_type
+
+    def display_hint(self):
+        return "array"
+
+    def _get_key_value(self, node):
+        key_value = node.cast(self.util.cast_type).dereference()["__value_"]
+        return [key_value]
+
+
+class AbstractRBTreeIteratorPrinter(object):
+    """Abstract super class for std::(multi)map, and std::(multi)set iterator."""
+
+    def _initialize(self, val, typename):
+        self.typename = typename
+        self.val = val
+        self.addr = self.val["__ptr_"]
+        cast_type = self.val.type.template_argument(1)
+        self.util = RBTreeUtils(cast_type, None)
+        if self.addr:
+            self.node = self.addr.cast(cast_type).dereference()
+
+    def _is_valid_node(self):
+        if not self.util.parent(self.addr):
+            return False
+        return self.util.is_left_child(self.addr) or \
+            self.util.is_right_child(self.addr)
+
+    def to_string(self):
+        if not self.addr:
+            return "%s is nullptr" % self.typename
+        return "%s " % self.typename
+
+    def _get_node_value(self, node):
+        raise NotImplementedError
+
+    def __iter__(self):
+        addr_str = "[%s]" % str(self.addr)
+        if not self._is_valid_node():
+            yield addr_str, " end()"
+        else:
+            yield addr_str, self._get_node_value(self.node)
+
+    def children(self):
+        return self if self.addr else iter(())
+
+
+class MapIteratorPrinter(AbstractRBTreeIteratorPrinter):
+    """Print a std::(multi)map iterator."""
+
+    def __init__(self, val):
+        self._initialize(val["__i_"],
+                         _remove_generics(_prettify_typename(val.type)))
+
+    def _get_node_value(self, node):
+        return _cc_field(node)
+
+
+class SetIteratorPrinter(AbstractRBTreeIteratorPrinter):
+    """Print a std::(multi)set iterator."""
+
+    def __init__(self, val):
+        self._initialize(val, _remove_generics(_prettify_typename(val.type)))
+
+    def _get_node_value(self, node):
+        return node["__value_"]
+
+
+class StdFposPrinter(object):
+    """Print a std::fpos or std::streampos."""
+
+    def __init__(self, val):
+        self.val = val
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        offset = self.val["__off_"]
+        state = self.val["__st_"]
+
+        state_fields = []
+        if state.type.code == gdb.TYPE_CODE_STRUCT:
+            state_fields = [f.name for f in state.type.fields()]
+
+        state_string = ""
+        if "__count" in state_fields and "__value" in state_fields:
+            count = state["__count"]
+            value = state["__value"]["__wch"]
+            state_string = " with state: {count:%s value:%s}" % (count, value)
+
+        return "%s with stream offset:%s%s" % (typename, offset, state_string)
+
+
+class AbstractUnorderedCollectionPrinter(object):
+    """Abstract super class for std::unordered_(multi)[set|map]."""
+
+    def __init__(self, val):
+        self.val = val
+        self.table = val["__table_"]
+        self.sentinel = self.table["__p1_"]
+        self.size = int(_value_of_pair_first(self.table["__p2_"]))
+        node_base_type = self.sentinel.type.template_argument(0)
+        self.cast_type = node_base_type.template_argument(0)
+
+    def _list_it(self, sentinel_ptr):
+        next_ptr = _value_of_pair_first(sentinel_ptr)["__next_"]
+        while str(next_ptr.cast(_void_pointer_type)) != "0x0":
+            next_val = next_ptr.cast(self.cast_type).dereference()
+            for key_value in self._get_key_value(next_val):
+                yield "", key_value
+            next_ptr = next_val["__next_"]
+
+    def to_string(self):
+        typename = _remove_generics(_prettify_typename(self.val.type))
+        if self.size:
+            return "%s with %d elements" % (typename, self.size)
+        return "%s is empty" % typename
+
+    def _get_key_value(self, node):
+        """Subclasses should override to return a list of values to yield."""
+        raise NotImplementedError
+
+    def children(self):
+        return self if self.cast_type and self.size > 0 else iter(())
+
+    def __iter__(self):
+        return self._list_it(self.sentinel)
+
+
+class StdUnorderedSetPrinter(AbstractUnorderedCollectionPrinter):
+    """Print a std::unordered_(multi)set."""
+
+    def _get_key_value(self, node):
+        return [node["__value_"]]
+
+    def display_hint(self):
+        return "array"
+
+
+class StdUnorderedMapPrinter(AbstractUnorderedCollectionPrinter):
+    """Print a std::unordered_(multi)map."""
+
+    def _get_key_value(self, node):
+        key_value = _cc_field(node)
+        return [key_value["first"], key_value["second"]]
+
+    def display_hint(self):
+        return "map"
+
+
+class AbstractHashMapIteratorPrinter(object):
+    """Abstract class for unordered collection iterators."""
+
+    def _initialize(self, val, addr):
+        self.val = val
+        self.typename = _remove_generics(_prettify_typename(self.val.type))
+        self.addr = addr
+        if self.addr:
+            self.node = self.addr.cast(self.cast_type).dereference()
+
+    def _get_key_value(self):
+        """Subclasses should override to return a list of values to yield."""
+        raise NotImplementedError
+
+    def to_string(self):
+        if not self.addr:
+            return "%s = end()" % self.typename
+        return "%s " % self.typename
+
+    def children(self):
+        return self if self.addr else iter(())
+
+    def __iter__(self):
+        for key_value in self._get_key_value():
+            yield "", key_value
+
+
+class StdUnorderedSetIteratorPrinter(AbstractHashMapIteratorPrinter):
+    """Print a std::(multi)set iterator."""
+
+    def __init__(self, val):
+        self.cast_type = val.type.template_argument(0)
+        self._initialize(val, val["__node_"])
+
+    def _get_key_value(self):
+        return [self.node["__value_"]]
+
+    def display_hint(self):
+        return "array"
+
+
+class StdUnorderedMapIteratorPrinter(AbstractHashMapIteratorPrinter):
+    """Print a std::(multi)map iterator."""
+
+    def __init__(self, val):
+        self.cast_type = val.type.template_argument(0).template_argument(0)
+        self._initialize(val, val["__i_"]["__node_"])
+
+    def _get_key_value(self):
+        key_value = _cc_field(self.node)
+        return [key_value["first"], key_value["second"]]
+
+    def display_hint(self):
+        return "map"
+
+
+def _remove_std_prefix(typename):
+    match = re.match("^std::(.+)", typename)
+    return match.group(1) if match is not None else ""
+
+
+class LibcxxPrettyPrinter(object):
+    """PrettyPrinter object so gdb-commands like 'info pretty-printers' work."""
+
+    def __init__(self, name):
+        super(LibcxxPrettyPrinter, self).__init__()
+        self.name = name
+        self.enabled = True
+
+        self.lookup = {
+            "basic_string": StdStringPrinter,
+            "string": StdStringPrinter,
+            "string_view": StdStringViewPrinter,
+            "tuple": StdTuplePrinter,
+            "unique_ptr": StdUniquePtrPrinter,
+            "shared_ptr": StdSharedPointerPrinter,
+            "weak_ptr": StdSharedPointerPrinter,
+            "bitset": StdBitsetPrinter,
+            "deque": StdDequePrinter,
+            "list": StdListPrinter,
+            "queue": StdQueueOrStackPrinter,
+            "stack": StdQueueOrStackPrinter,
+            "priority_queue": StdPriorityQueuePrinter,
+            "map": StdMapPrinter,
+            "multimap": StdMapPrinter,
+            "set": StdSetPrinter,
+            "multiset": StdSetPrinter,
+            "vector": StdVectorPrinter,
+            "__map_iterator": MapIteratorPrinter,
+            "__map_const_iterator": MapIteratorPrinter,
+            "__tree_iterator": SetIteratorPrinter,
+            "__tree_const_iterator": SetIteratorPrinter,
+            "fpos": StdFposPrinter,
+            "unordered_set": StdUnorderedSetPrinter,
+            "unordered_multiset": StdUnorderedSetPrinter,
+            "unordered_map": StdUnorderedMapPrinter,
+            "unordered_multimap": StdUnorderedMapPrinter,
+            "__hash_map_iterator": StdUnorderedMapIteratorPrinter,
+            "__hash_map_const_iterator": StdUnorderedMapIteratorPrinter,
+            "__hash_iterator": StdUnorderedSetIteratorPrinter,
+            "__hash_const_iterator": StdUnorderedSetIteratorPrinter,
+        }
+
+        self.subprinters = []
+        for name, subprinter in self.lookup.items():
+            # Subprinters and names are used only for the rarely used command "info
+            # pretty" (and related), so the name of the first data structure it prints
+            # is a reasonable choice.
+            if subprinter not in self.subprinters:
+                subprinter.name = name
+                self.subprinters.append(subprinter)
+
+    def __call__(self, val):
+        """Return the pretty printer for a val, if the type is supported."""
+
+        # Do not handle any type that is not a struct/class.
+        if val.type.strip_typedefs().code != gdb.TYPE_CODE_STRUCT:
+            return None
+
+        # Don't attempt types known to be inside libstdcxx.
+        typename = val.type.name or val.type.tag or str(val.type)
+        match = re.match("^std::(__.*?)::", typename)
+        if match is not None and match.group(1) in ["__cxx1998",
+                                                    "__debug",
+                                                    "__7",
+                                                    "__g"]:
+            return None
+
+        # Handle any using declarations or other typedefs.
+        typename = _prettify_typename(val.type)
+        if not typename:
+            return None
+        without_generics = _remove_generics(typename)
+        lookup_name = _remove_std_prefix(without_generics)
+        if lookup_name in self.lookup:
+            return self.lookup[lookup_name](val)
+        return None
+
+
+_libcxx_printer_name = "libcxx_pretty_printer"
+
+
+# These are called for every binary object file, which could be thousands in
+# certain pathological cases. Limit our pretty printers to the progspace.
+def _register_libcxx_printers(event):
+    progspace = event.new_objfile.progspace
+    # It would be ideal to get the endianness at print time, but
+    # gdb.execute clears gdb's internal wrap buffer, removing any values
+    # already generated as part of a larger data structure, and there is
+    # no python api to get the endianness. Mixed-endianness debugging
+    # rare enough that this workaround should be adequate.
+    _libcpp_big_endian = "big endian" in gdb.execute("show endian",
+                                                     to_string=True)
+
+    if not getattr(progspace, _libcxx_printer_name, False):
+        print("Loading libc++ pretty-printers.")
+        gdb.printing.register_pretty_printer(
+            progspace, LibcxxPrettyPrinter(_libcxx_printer_name))
+        setattr(progspace, _libcxx_printer_name, True)
+
+
+def _unregister_libcxx_printers(event):
+    progspace = event.progspace
+    if getattr(progspace, _libcxx_printer_name, False):
+        for printer in progspace.pretty_printers:
+            if getattr(printer, "name", "none") == _libcxx_printer_name:
+                progspace.pretty_printers.remove(printer)
+                setattr(progspace, _libcxx_printer_name, False)
+                break
+
+
+def register_libcxx_printer_loader():
+    """Register event handlers to load libc++ pretty-printers."""
+    gdb.events.new_objfile.connect(_register_libcxx_printers)
+    gdb.events.clear_objfiles.connect(_unregister_libcxx_printers)
diff --git a/app/src/main/cpp/libcxx/utils/generate_abi_list.py b/app/src/main/cpp/libcxx/utils/generate_abi_list.py
new file mode 100644
index 0000000..670300b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_abi_list.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+import argparse
+import io
+import libcxx.sym_check.extract
+import libcxx.sym_check.util
+import pprint
+import sys
+
+def OutputFile(file):
+    if isinstance(file, io.IOBase):
+        return file
+    assert isinstance(file, str), "Got object {} which is not a str".format(file)
+    return open(file, 'w', newline='\n')
+
+def main(argv):
+    parser = argparse.ArgumentParser(
+        description='Extract a list of symbols from a shared library.')
+    parser.add_argument('library', metavar='LIB', type=str,
+        help='The library to extract symbols from.')
+    parser.add_argument('-o', '--output', dest='output', type=OutputFile, default=sys.stdout,
+        help='The output file to write the symbols to. It is overwritten if it already exists. '
+             'If no file is specified, the results are written to standard output.')
+    args = parser.parse_args(argv)
+
+    symbols = libcxx.sym_check.extract.extract_symbols(args.library)
+    symbols, _ = libcxx.sym_check.util.filter_stdlib_symbols(symbols)
+
+    lines = [pprint.pformat(sym, width=99999) for sym in symbols]
+    args.output.writelines('\n'.join(sorted(lines)))
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/app/src/main/cpp/libcxx/utils/generate_escaped_output_table.py b/app/src/main/cpp/libcxx/utils/generate_escaped_output_table.py
new file mode 100644
index 0000000..cc0b1dd
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_escaped_output_table.py
@@ -0,0 +1,338 @@
+#!/usr/bin/env python
+# ===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------===##
+
+# The code is based on
+# https://github.com/microsoft/STL/blob/main/tools/unicode_properties_parse/grapheme_break_property_data_gen.py
+#
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+from io import StringIO
+from pathlib import Path
+from dataclasses import dataclass, field
+from typing import Optional
+import re
+import sys
+
+
+@dataclass
+class PropertyRange:
+    lower: int = -1
+    upper: int = -1
+    prop: str = None
+
+
+@dataclass
+class Entry:
+    lower: int = -1
+    offset: int = -1
+
+
+LINE_REGEX = re.compile(
+    r"^(?P<lower>[0-9A-F]{4,6})(?:\.\.(?P<upper>[0-9A-F]{4,6}))?\s*;\s*(?P<prop>\w+)"
+)
+
+
+def filterCoreProperty(element: PropertyRange) -> Optional[PropertyRange]:
+    if element.prop == "Grapheme_Extend":
+        return element
+    return None
+
+
+# https://www.unicode.org/reports/tr44/#GC_Values_Table
+def filterGeneralProperty(element: PropertyRange) -> Optional[PropertyRange]:
+    if element.prop in ["Zs", "Zl", "Zp", "Cc", "Cf", "Cs", "Co", "Cn"]:
+        return element
+    return None
+
+
+def parsePropertyLine(inputLine: str) -> Optional[PropertyRange]:
+    result = PropertyRange()
+    if m := LINE_REGEX.match(inputLine):
+        lower_str, upper_str, result.prop = m.group("lower", "upper", "prop")
+        result.lower = int(lower_str, base=16)
+        result.upper = result.lower
+        if upper_str is not None:
+            result.upper = int(upper_str, base=16)
+        return result
+
+    else:
+        return None
+
+
+def compactPropertyRanges(input: list[PropertyRange]) -> list[PropertyRange]:
+    """
+    Merges overlapping and consecutive ranges to one range.
+
+    Since the input properties are filtered the exact property isn't
+    interesting anymore. The properties in the output are merged to aid
+    debugging.
+    Merging the ranges results in fewer ranges in the output table,
+    reducing binary and improving lookup performance.
+    """
+    result = list()
+    for x in input:
+        if (
+            len(result)
+            and x.lower > result[-1].lower
+            and x.lower <= result[-1].upper + 1
+        ):
+            result[-1].upper = max(result[-1].upper, x.upper)
+            result[-1].prop += f" {x.prop}"
+            continue
+        result.append(x)
+    return result
+
+
+DATA_ARRAY_TEMPLATE = """
+/// The entries of the characters to escape in format's debug string.
+///
+/// Contains the entries for [format.string.escaped]/2.2.1.2.1
+///   CE is a Unicode encoding and C corresponds to either a UCS scalar value
+///   whose Unicode property General_Category has a value in the groups
+///   Separator (Z) or Other (C) or to a UCS scalar value which has the Unicode
+///   property Grapheme_Extend=Yes, as described by table 12 of UAX #44
+///
+/// Separator (Z) consists of General_Category
+/// - Space_Separator,
+/// - Line_Separator,
+/// - Paragraph_Separator.
+///
+/// Other (C) consists of General_Category
+/// - Control,
+/// - Format,
+/// - Surrogate,
+/// - Private_Use,
+/// - Unassigned.
+///
+/// The data is generated from
+/// - https://www.unicode.org/Public/UCD/latest/ucd/DerivedCoreProperties.txt
+/// - https://www.unicode.org/Public/UCD/latest/ucd/extracted/DerivedGeneralCategory.txt
+///
+/// The table is similar to the table
+///  __extended_grapheme_custer_property_boundary::__entries
+/// which explains the details of these classes. The only difference is this
+/// table lacks a property, thus having more bits available for the size.
+///
+/// The data has 2 values:
+/// - bits [0, 10] The size of the range, allowing 2048 elements.
+/// - bits [11, 31] The lower bound code point of the range. The upper bound of
+///   the range is lower bound + size.
+inline constexpr uint32_t __entries[{size}] = {{
+{entries}}};
+
+/// At the end of the valid Unicode code points space a lot of code points are
+/// either reserved or a noncharacter. Adding all these entries to the
+/// lookup table would add 446 entries to the table (in Unicode 14).
+/// Instead the only the start of the region is stored, every code point in
+/// this region needs to be escaped.
+inline constexpr uint32_t __unallocated_region_lower_bound = 0x{unallocated:08x};
+
+/// Returns whether the code unit needs to be escaped.
+///
+/// \pre The code point is a valid Unicode code point.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool __needs_escape(const char32_t __code_point) noexcept {{
+  // Since __unallocated_region_lower_bound contains the unshifted range do the
+  // comparison without shifting.
+  if (__code_point >= __unallocated_region_lower_bound)
+    return true;
+
+  ptrdiff_t __i = std::ranges::upper_bound(__entries, (__code_point << 11) | 0x7ffu) - __entries;
+  if (__i == 0)
+    return false;
+
+  --__i;
+  uint32_t __upper_bound = (__entries[__i] >> 11) + (__entries[__i] & 0x7ffu);
+  return __code_point <= __upper_bound;
+}}
+"""
+
+TABLES_HPP_TEMPLATE = """
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// WARNING, this entire header is generated by
+// utils/generate_escaped_output_table.py
+// DO NOT MODIFY!
+
+// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
+//
+// See Terms of Use <https://www.unicode.org/copyright.html>
+// for definitions of Unicode Inc.'s Data Files and Software.
+//
+// NOTICE TO USER: Carefully read the following legal agreement.
+// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
+// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
+// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+// TERMS AND CONDITIONS OF THIS AGREEMENT.
+// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
+// THE DATA FILES OR SOFTWARE.
+//
+// COPYRIGHT AND PERMISSION NOTICE
+//
+// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved.
+// Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of the Unicode data files and any associated documentation
+// (the "Data Files") or Unicode software and any associated documentation
+// (the "Software") to deal in the Data Files or Software
+// without restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, and/or sell copies of
+// the Data Files or Software, and to permit persons to whom the Data Files
+// or Software are furnished to do so, provided that either
+// (a) this copyright and permission notice appear with all copies
+// of the Data Files or Software, or
+// (b) this copyright and permission notice appear in associated
+// Documentation.
+//
+// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
+// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
+// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
+// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THE DATA FILES OR SOFTWARE.
+//
+// Except as contained in this notice, the name of a copyright holder
+// shall not be used in advertising or otherwise to promote the sale,
+// use or other dealings in these Data Files or Software without prior
+// written authorization of the copyright holder.
+
+#ifndef _LIBCPP___FORMAT_ESCAPED_OUTPUT_TABLE_H
+#define _LIBCPP___FORMAT_ESCAPED_OUTPUT_TABLE_H
+
+#include <__algorithm/ranges_upper_bound.h>
+#include <__config>
+#include <cstddef>
+#include <cstdint>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER > 20
+
+namespace __escaped_output_table {{
+{content}
+}} // namespace __escaped_output_table
+
+#endif //_LIBCPP_STD_VER > 20
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FORMAT_ESCAPED_OUTPUT_TABLE_H"""
+
+
+def property_ranges_to_table(ranges: list[PropertyRange]) -> list[Entry]:
+    result = list[Entry]()
+    high = -1
+    for range in sorted(ranges, key=lambda x: x.lower):
+        # Validate overlapping ranges
+        assert range.lower > high
+        high = range.upper
+
+        while True:
+            e = Entry(range.lower, range.upper - range.lower)
+            if e.offset <= 2047:
+                result.append(e)
+                break
+            e.offset = 2047
+            result.append(e)
+            range.lower += 2048
+    return result
+
+
+cpp_entrytemplate = "    0x{:08x}"
+
+
+def generate_cpp_data(ranges: list[PropertyRange], unallocated: int) -> str:
+    result = StringIO()
+    table = property_ranges_to_table(ranges)
+    result.write(
+        DATA_ARRAY_TEMPLATE.format(
+            size=len(table),
+            entries=",\n".join(
+                [cpp_entrytemplate.format(x.lower << 11 | x.offset) for x in table]
+            ),
+            unallocated=unallocated,
+        )
+    )
+
+    return result.getvalue()
+
+
+def generate_data_tables() -> str:
+    """
+    Generate Unicode data for [format.string.escaped]/2.2.1.2.1
+    """
+    derived_general_catagory_path = (
+        Path(__file__).absolute().parent
+        / "data"
+        / "unicode"
+        / "DerivedGeneralCategory.txt"
+    )
+    derived_core_catagory_path = (
+        Path(__file__).absolute().parent
+        / "data"
+        / "unicode"
+        / "DerivedCoreProperties.txt"
+    )
+
+    properties = list()
+    with derived_general_catagory_path.open(encoding="utf-8") as f:
+        properties.extend(
+            list(
+                filter(
+                    filterGeneralProperty,
+                    [x for line in f if (x := parsePropertyLine(line))],
+                )
+            )
+        )
+    with derived_core_catagory_path.open(encoding="utf-8") as f:
+        properties.extend(
+            list(
+                filter(
+                    filterCoreProperty,
+                    [x for line in f if (x := parsePropertyLine(line))],
+                )
+            )
+        )
+
+    data = compactPropertyRanges(sorted(properties, key=lambda x: x.lower))
+
+    # The last entry is large. In Unicode 14 it contains the entries
+    # 3134B..0FFFF 912564 elements
+    # This are 446 entries of 1325 entries in the table.
+    # Based on the nature of these entries it is expected they remain for the
+    # forseeable future. Therefore we only store the lower bound of this section.
+    #
+    # When this region becomes substantially smaller we need to investigate
+    # this design.
+    assert data[-1].upper == 0x10FFFF
+    assert data[-1].upper - data[-1].lower > 900000
+
+    return "\n".join([generate_cpp_data(data[:-1], data[-1].lower)])
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2:
+        sys.stdout = open(sys.argv[1], "w")
+    print(TABLES_HPP_TEMPLATE.lstrip().format(content=generate_data_tables()))
diff --git a/app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_table.py b/app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_table.py
new file mode 100644
index 0000000..2762c01
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_table.py
@@ -0,0 +1,332 @@
+#!/usr/bin/env python
+# ===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------===##
+
+# The code is based on
+# https://github.com/microsoft/STL/blob/main/tools/unicode_properties_parse/grapheme_break_property_data_gen.py
+#
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+from io import StringIO
+from pathlib import Path
+from dataclasses import dataclass, field
+from typing import Optional
+import re
+import sys
+
+
+@dataclass
+class PropertyRange:
+    lower: int = -1
+    upper: int = -1
+    prop: str = None
+
+
+@dataclass
+class Entry:
+    lower: int = -1
+    offset: int = -1
+    prop: int = -1
+
+
+LINE_REGEX = re.compile(
+    r"^(?P<lower>[0-9A-F]{4,5})(?:\.\.(?P<upper>[0-9A-F]{4,5}))?\s*;\s*(?P<prop>\w+)"
+)
+
+
+def parsePropertyLine(inputLine: str) -> Optional[PropertyRange]:
+    result = PropertyRange()
+    if m := LINE_REGEX.match(inputLine):
+        lower_str, upper_str, result.prop = m.group("lower", "upper", "prop")
+        result.lower = int(lower_str, base=16)
+        result.upper = result.lower
+        if upper_str is not None:
+            result.upper = int(upper_str, base=16)
+        return result
+
+    else:
+        return None
+
+
+def compactPropertyRanges(input: list[PropertyRange]) -> list[PropertyRange]:
+    """
+    Merges consecutive ranges with the same property to one range.
+
+    Merging the ranges results in fewer ranges in the output table,
+    reducing binary and improving lookup performance.
+    """
+    result = list()
+    for x in input:
+        if (
+            len(result)
+            and result[-1].prop == x.prop
+            and result[-1].upper + 1 == x.lower
+        ):
+            result[-1].upper = x.upper
+            continue
+        result.append(x)
+    return result
+
+
+PROP_VALUE_ENUMERATOR_TEMPLATE = "  __{}"
+PROP_VALUE_ENUM_TEMPLATE = """
+enum class __property : uint8_t {{
+  // Values generated from the data files.
+{enumerators},
+
+  // The properies below aren't stored in the "database".
+
+  // Text position properties.
+  __sot,
+  __eot,
+
+  // The code unit has none of above properties.
+  __none
+}};
+"""
+
+DATA_ARRAY_TEMPLATE = """
+/// The entries of the extended grapheme cluster bondary property table.
+///
+/// The data is generated from
+/// - https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt
+/// - https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt
+///
+/// The data has 3 values
+/// - bits [0, 3] The property. One of the values generated from the datafiles
+///   of \\ref __property
+/// - bits [4, 10] The size of the range.
+/// - bits [11, 31] The lower bound code point of the range. The upper bound of
+///   the range is lower bound + size.
+///
+/// The 7 bits for the size allow a maximum range of 128 elements. Some ranges
+/// in the Unicode tables are larger. They are stored in multiple consecutive
+/// ranges in the data table. An alternative would be to store the sizes in a
+/// separate 16-bit value. The original MSVC STL code had such an approach, but
+/// this approach uses less space for the data and is about 4% faster in the
+/// following benchmark.
+/// libcxx/benchmarks/std_format_spec_string_unicode.bench.cpp
+inline constexpr uint32_t __entries[{size}] = {{
+{entries}}};
+
+/// Returns the extended grapheme cluster bondary property of a code point.
+[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr __property __get_property(const char32_t __code_point) noexcept {{
+  // The algorithm searches for the upper bound of the range and, when found,
+  // steps back one entry. This algorithm is used since the code point can be
+  // anywhere in the range. After a lower bound is found the next step is to
+  // compare whether the code unit is indeed in the range.
+  //
+  // Since the entry contains a code unit, size, and property the code point
+  // being sought needs to be adjusted. Just shifting the code point to the
+  // proper position doesn't work; suppose an entry has property 0, size 1,
+  // and lower bound 3. This results in the entry 0x1810.
+  // When searching for code point 3 it will search for 0x1800, find 0x1810
+  // and moves to the previous entry. Thus the lower bound value will never
+  // be found.
+  // The simple solution is to set the bits belonging to the property and
+  // size. Then the upper bound for code point 3 will return the entry after
+  // 0x1810. After moving to the previous entry the algorithm arrives at the
+  // correct entry.
+  ptrdiff_t __i = std::ranges::upper_bound(__entries, (__code_point << 11) | 0x7ffu) - __entries;
+  if (__i == 0)
+    return __property::__none;
+
+  --__i;
+  uint32_t __upper_bound = (__entries[__i] >> 11) + ((__entries[__i] >> 4) & 0x7f);
+  if (__code_point <= __upper_bound)
+    return static_cast<__property>(__entries[__i] & 0xf);
+
+  return __property::__none;
+}}
+"""
+
+MSVC_FORMAT_UCD_TABLES_HPP_TEMPLATE = """
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// WARNING, this entire header is generated by
+// utils/generate_extended_grapheme_cluster_table.py
+// DO NOT MODIFY!
+
+// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
+//
+// See Terms of Use <https://www.unicode.org/copyright.html>
+// for definitions of Unicode Inc.'s Data Files and Software.
+//
+// NOTICE TO USER: Carefully read the following legal agreement.
+// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
+// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
+// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+// TERMS AND CONDITIONS OF THIS AGREEMENT.
+// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
+// THE DATA FILES OR SOFTWARE.
+//
+// COPYRIGHT AND PERMISSION NOTICE
+//
+// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved.
+// Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of the Unicode data files and any associated documentation
+// (the "Data Files") or Unicode software and any associated documentation
+// (the "Software") to deal in the Data Files or Software
+// without restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, and/or sell copies of
+// the Data Files or Software, and to permit persons to whom the Data Files
+// or Software are furnished to do so, provided that either
+// (a) this copyright and permission notice appear with all copies
+// of the Data Files or Software, or
+// (b) this copyright and permission notice appear in associated
+// Documentation.
+//
+// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
+// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
+// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
+// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THE DATA FILES OR SOFTWARE.
+//
+// Except as contained in this notice, the name of a copyright holder
+// shall not be used in advertising or otherwise to promote the sale,
+// use or other dealings in these Data Files or Software without prior
+// written authorization of the copyright holder.
+
+#ifndef _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H
+#define _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H
+
+#include <__algorithm/ranges_upper_bound.h>
+#include <__config>
+#include <__iterator/access.h>
+#include <cstddef>
+#include <cstdint>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER > 17
+
+namespace __extended_grapheme_custer_property_boundary {{
+{content}
+}} // namespace __extended_grapheme_custer_property_boundary
+
+#endif //_LIBCPP_STD_VER > 17
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FORMAT_EXTENDED_GRAPHEME_CLUSTER_TABLE_H"""
+
+
+def property_ranges_to_table(
+    ranges: list[PropertyRange], props: list[str]
+) -> list[Entry]:
+    assert len(props) < 16
+    result = list[Entry]()
+    high = -1
+    for range in sorted(ranges, key=lambda x: x.lower):
+        # Validate overlapping ranges
+        assert range.lower > high
+        high = range.upper
+
+        while True:
+            e = Entry(range.lower, range.upper - range.lower, props.index(range.prop))
+            if e.offset <= 127:
+                result.append(e)
+                break
+            e.offset = 127
+            result.append(e)
+            range.lower += 128
+    return result
+
+
+cpp_entrytemplate = "    0x{:08x}"
+
+
+def generate_cpp_data(prop_name: str, ranges: list[PropertyRange]) -> str:
+    result = StringIO()
+    prop_values = sorted(set(x.prop for x in ranges))
+    table = property_ranges_to_table(ranges, prop_values)
+    enumerator_values = [PROP_VALUE_ENUMERATOR_TEMPLATE.format(x) for x in prop_values]
+    result.write(
+        PROP_VALUE_ENUM_TEMPLATE.format(enumerators=",\n".join(enumerator_values))
+    )
+    result.write(
+        DATA_ARRAY_TEMPLATE.format(
+            prop_name=prop_name,
+            size=len(table),
+            entries=",\n".join(
+                [
+                    cpp_entrytemplate.format(x.lower << 11 | x.offset << 4 | x.prop)
+                    for x in table
+                ]
+            ),
+        )
+    )
+
+    return result.getvalue()
+
+
+def generate_data_tables() -> str:
+    """
+    Generate Unicode data for inclusion into <format> from
+    GraphemeBreakProperty.txt and emoji-data.txt.
+
+    GraphemeBreakProperty.txt can be found at
+    https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakProperty.txt
+
+    emoji-data.txt can be found at
+    https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt
+
+    Both files are expected to be in the same directory as this script.
+    """
+    gbp_data_path = (
+        Path(__file__).absolute().parent
+        / "data"
+        / "unicode"
+        / "GraphemeBreakProperty.txt"
+    )
+    emoji_data_path = (
+        Path(__file__).absolute().parent / "data" / "unicode" / "emoji-data.txt"
+    )
+    gbp_ranges = list()
+    emoji_ranges = list()
+    with gbp_data_path.open(encoding="utf-8") as f:
+        gbp_ranges = compactPropertyRanges(
+            [x for line in f if (x := parsePropertyLine(line))]
+        )
+    with emoji_data_path.open(encoding="utf-8") as f:
+        emoji_ranges = compactPropertyRanges(
+            [x for line in f if (x := parsePropertyLine(line))]
+        )
+
+    [gbp_ranges.append(x) for x in emoji_ranges if x.prop == "Extended_Pictographic"]
+    gpb_cpp_data = generate_cpp_data("Grapheme_Break", gbp_ranges)
+    return "\n".join([gpb_cpp_data])
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2:
+        sys.stdout = open(sys.argv[1], "w")
+    print(
+        MSVC_FORMAT_UCD_TABLES_HPP_TEMPLATE.lstrip().format(
+            content=generate_data_tables()
+        )
+    )
diff --git a/app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_test.py b/app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_test.py
new file mode 100644
index 0000000..5061c80
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_extended_grapheme_cluster_test.py
@@ -0,0 +1,256 @@
+#!/usr/bin/env python
+# ===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------===##
+
+# The code is based on
+# https://github.com/microsoft/STL/blob/main/tools/unicode_properties_parse/grapheme_break_test_data_gen.py
+#
+# Copyright (c) Microsoft Corporation.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+from pathlib import Path
+from dataclasses import dataclass, field
+from typing import Optional, TextIO
+from array import array
+import sys
+
+
+@dataclass
+class BreakTestItem:
+    code_points: list[int] = field(default_factory=list)
+    encoded: str = ""
+    breaks_utf8: list[int] = field(default_factory=list)
+    breaks_utf16: list[int] = field(default_factory=list)
+    breaks_utf32: list[int] = field(default_factory=list)
+
+
+class CommentLine:
+    pass
+
+
+class EOF:
+    pass
+
+
+def parseBreakTestLine(input: TextIO) -> Optional[BreakTestItem]:
+    result = BreakTestItem()
+    code_point = -1
+    utf8 = 0
+    utf16 = 0
+    utf32 = 0
+
+    while True:
+        c = input.read(1)
+        if c == "\N{DIVISION SIGN}":
+            # The line starts with a division sign, don't add it to the output.
+            if code_point != -1:
+                result.code_points.append(code_point)
+                code_point = -1
+                result.breaks_utf8.append(utf8)
+                result.breaks_utf16.append(utf16)
+                result.breaks_utf32.append(utf32)
+
+            assert input.read(1).isspace()
+            continue
+        if c == "\N{MULTIPLICATION SIGN}":
+            assert input.read(1).isspace()
+            continue
+        if c.isalnum():
+            while next := input.read(1):
+                if next.isalnum():
+                    c += next
+                else:
+                    assert next.isspace()
+                    break
+            i = int(c, base=16)
+            if code_point == -1:
+                code_point = i
+
+            result.encoded += f"\\U{i:08x}"
+            c = chr(i)
+            utf8 += c.encode().__len__()
+            # Since we only care about the number of code units the byte order
+            # doesn't matter. The byte order is specified to avoid the BOM
+            utf16 += int(c.encode("utf-16-le").__len__() / 2)
+            utf32 += int(c.encode("utf-32-le").__len__() / 4)
+            continue
+        if c == "#":
+            input.readline()
+            return result
+        if c == "\n":
+            return result
+        if c == "":
+            return None
+        assert False
+
+
+cpp_template = """// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// WARNING, this entire header is generated by
+// utiles/generate_extended_grapheme_cluster_test.py
+// DO NOT MODIFY!
+
+// UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
+//
+// See Terms of Use <https://www.unicode.org/copyright.html>
+// for definitions of Unicode Inc.'s Data Files and Software.
+//
+// NOTICE TO USER: Carefully read the following legal agreement.
+// BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
+// DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
+// YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+// TERMS AND CONDITIONS OF THIS AGREEMENT.
+// IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
+// THE DATA FILES OR SOFTWARE.
+//
+// COPYRIGHT AND PERMISSION NOTICE
+//
+// Copyright (c) 1991-2022 Unicode, Inc. All rights reserved.
+// Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of the Unicode data files and any associated documentation
+// (the "Data Files") or Unicode software and any associated documentation
+// (the "Software") to deal in the Data Files or Software
+// without restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, and/or sell copies of
+// the Data Files or Software, and to permit persons to whom the Data Files
+// or Software are furnished to do so, provided that either
+// (a) this copyright and permission notice appear with all copies
+// of the Data Files or Software, or
+// (b) this copyright and permission notice appear in associated
+// Documentation.
+//
+// THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
+// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
+// NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
+// DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+// DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+// TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THE DATA FILES OR SOFTWARE.
+//
+// Except as contained in this notice, the name of a copyright holder
+// shall not be used in advertising or otherwise to promote the sale,
+// use or other dealings in these Data Files or Software without prior
+// written authorization of the copyright holder.
+
+#ifndef LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_EXTENDED_GRAPHEME_CLUSTER_H
+#define LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_EXTENDED_GRAPHEME_CLUSTER_H
+
+#include <array>
+#include <string_view>
+#include <vector>
+
+#include "test_macros.h"
+
+template <class CharT>
+struct data {{
+  /// The input to parse.
+  std::basic_string_view<CharT> input;
+
+  /// The first code point all extended grapheme clusters in the input.
+  std::vector<char32_t> code_points;
+
+  /// The offset of the last code units of the extended grapheme clusters in the input.
+  ///
+  /// The vector has the same number of entries as \\ref code_points.
+  std::vector<size_t> breaks;
+}};
+
+/// The data for UTF-8.
+std::array<data<char>, {0}> data_utf8 = {{{{
+{1}}}}};
+
+/// The data for UTF-16.
+///
+/// Note that most of the data for the UTF-16 and UTF-32 are identical. However
+/// since the size of the code units differ the breaks can contain different
+/// values.
+#ifndef TEST_HAS_NO_WIDE_CHARACTERS
+std::array<data<wchar_t>, {0}> data_utf16 = {{{{
+{2}}}}};
+
+/// The data for UTF-8.
+///
+/// Note that most of the data for the UTF-16 and UTF-32 are identical. However
+/// since the size of the code units differ the breaks can contain different
+/// values.
+std::array<data<wchar_t>, {0}> data_utf32 = {{{{
+{3}}}}};
+#endif // TEST_HAS_NO_WIDE_CHARACTERS
+
+#endif // LIBCXX_TEST_STD_UTILITIES_FORMAT_FORMAT_STRING_FORMAT_STRING_STD_EXTENDED_GRAPHEME_CLUSTER_H"""
+
+cpp_test_data_line_template = "     {{{}, {{{}}}, {{{}}}}}"
+
+
+def lineToCppDataLineUtf8(line: BreakTestItem) -> str:
+    return cpp_test_data_line_template.format(
+        f'"{line.encoded}"',
+        ", ".join([str(x) for x in line.code_points]),
+        ", ".join([str(x) for x in line.breaks_utf8]),
+    )
+
+
+def lineToCppDataLineUtf16(line: BreakTestItem) -> str:
+    return cpp_test_data_line_template.format(
+        f'L"{line.encoded}"',
+        ", ".join([str(x) for x in line.code_points]),
+        ", ".join([str(x) for x in line.breaks_utf16]),
+    )
+
+
+def lineToCppDataLineUtf32(line: BreakTestItem) -> str:
+    return cpp_test_data_line_template.format(
+        f'L"{line.encoded}"',
+        ", ".join([str(x) for x in line.code_points]),
+        ", ".join([str(x) for x in line.breaks_utf32]),
+    )
+
+
+"""
+Generate test data from "GraphemeBreakText.txt"
+This file can be downloaded from:
+https://www.unicode.org/Public/UCD/latest/ucd/auxiliary/GraphemeBreakTest.txt
+This script looks for GraphemeBreakTest.txt in same directory as this script
+"""
+
+
+def generate_all() -> str:
+    test_data_path = Path(__file__)
+    test_data_path = test_data_path.absolute()
+    test_data_path = (
+        test_data_path.parent / "data" / "unicode" / "GraphemeBreakTest.txt"
+    )
+    lines = list()
+    with open(test_data_path, mode="rt", encoding="utf-8") as file:
+        while line := parseBreakTestLine(file):
+            if len(line.encoded) > 0:
+                lines.append(line)
+    return cpp_template.format(
+        len(lines),
+        ",\n".join(map(lineToCppDataLineUtf8, lines)),
+        ",\n".join(map(lineToCppDataLineUtf16, lines)),
+        ",\n".join(map(lineToCppDataLineUtf32, lines)),
+    )
+
+
+if __name__ == "__main__":
+    if len(sys.argv) == 2:
+        sys.stdout = open(sys.argv[1], "w")
+    print(generate_all())
diff --git a/app/src/main/cpp/libcxx/utils/generate_feature_test_macro_components.py b/app/src/main/cpp/libcxx/utils/generate_feature_test_macro_components.py
new file mode 100644
index 0000000..69cb942
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_feature_test_macro_components.py
@@ -0,0 +1,1224 @@
+#!/usr/bin/env python
+
+import os
+from builtins import range
+from functools import reduce
+
+def get_libcxx_paths():
+  utils_path = os.path.dirname(os.path.abspath(__file__))
+  script_name = os.path.basename(__file__)
+  assert os.path.exists(utils_path)
+  src_root = os.path.dirname(utils_path)
+  include_path = os.path.join(src_root, 'include')
+  assert os.path.exists(include_path)
+  docs_path = os.path.join(src_root, 'docs')
+  assert os.path.exists(docs_path)
+  macro_test_path = os.path.join(src_root, 'test', 'std', 'language.support',
+                            'support.limits', 'support.limits.general')
+  assert os.path.exists(macro_test_path)
+  assert os.path.exists(os.path.join(macro_test_path, 'version.version.compile.pass.cpp'))
+  return script_name, src_root, include_path, docs_path, macro_test_path
+
+script_name, source_root, include_path, docs_path, macro_test_path = get_libcxx_paths()
+
+def has_header(h):
+  h_path = os.path.join(include_path, h)
+  return os.path.exists(h_path)
+
+def add_version_header(tc):
+  tc["headers"].append("version")
+  return tc
+
+# ================  ============================================================
+# Field             Description
+# ================  ============================================================
+# name              The name of the feature-test macro.
+# values            A dict whose keys are C++ versions and whose values are the
+#                   value of the feature-test macro for that C++ version.
+#                   (TODO: This isn't a very clean model for feature-test
+#                   macros affected by multiple papers.)
+# headers           An array with the headers that should provide the
+#                   feature-test macro.
+# test_suite_guard  An optional string field. When this field is provided,
+#                   `libcxx_guard` must also be provided. This field is used
+#                   only to generate the unit tests for the feature-test macros.
+#                   It can't depend on macros defined in <__config> because the
+#                   `test/std/` parts of the test suite are intended to be
+#                   portable to any C++ standard library implementation, not
+#                   just libc++. It may depend on
+#                    * macros defined by the compiler itself, or
+#                    * macros generated by CMake.
+#                   In some cases we add
+#                   `&& !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM_...)`
+#                   in order to make libc++ pass the tests on OSX; see D94983.
+# libcxx_guard      An optional string field. When this field is provided,
+#                   `test_suite_guard` must also be provided. This field is used
+#                   only to guard the feature-test macro in <version>. It may
+#                   be the same as `test_suite_guard`, or it may depend on
+#                   macros defined in <__config>.
+# unimplemented     An optional Boolean field with the value `True`. This field
+#                   is only used when a feature isn't fully implemented. Once
+#                   you've fully implemented the feature, you should remove
+#                   this field.
+# ================  ============================================================
+feature_test_macros = [ add_version_header(x) for x in [
+  {
+    "name": "__cpp_lib_adaptor_iterator_pair_constructor",
+    "values": { "c++2b": 202106 },
+    "headers": ["queue", "stack"],
+  }, {
+    "name": "__cpp_lib_addressof_constexpr",
+    "values": { "c++17": 201603 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_allocate_at_least",
+    "values": { "c++2b": 202106 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_allocator_traits_is_always_equal",
+    "values": { "c++17": 201411 },
+    "headers": ["deque", "forward_list", "list", "map", "memory", "scoped_allocator", "set", "string", "unordered_map", "unordered_set", "vector"],
+  }, {
+    "name": "__cpp_lib_any",
+    "values": { "c++17": 201606 },
+    "headers": ["any"],
+  }, {
+    "name": "__cpp_lib_apply",
+    "values": { "c++17": 201603 },
+    "headers": ["tuple"],
+  }, {
+    "name": "__cpp_lib_array_constexpr",
+    "values": { "c++17": 201603, "c++20": 201811 },
+    "headers": ["array", "iterator"],
+  }, {
+    "name": "__cpp_lib_as_const",
+    "values": { "c++17": 201510 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_associative_heterogeneous_erasure",
+    "values": { "c++2b": 202110 },
+    "headers": ["map", "set", "unordered_map", "unordered_set"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_assume_aligned",
+    "values": { "c++20": 201811 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_atomic_flag_test",
+    "values": { "c++20": 201907 },
+    "headers": ["atomic"],
+  }, {
+    "name": "__cpp_lib_atomic_float",
+    "values": { "c++20": 201711 },
+    "headers": ["atomic"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_atomic_is_always_lock_free",
+    "values": { "c++17": 201603 },
+    "headers": ["atomic"],
+  }, {
+    "name": "__cpp_lib_atomic_lock_free_type_aliases",
+    "values": { "c++20": 201907 },
+    "headers": ["atomic"],
+  }, {
+    "name": "__cpp_lib_atomic_ref",
+    "values": { "c++20": 201806 },
+    "headers": ["atomic"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_atomic_shared_ptr",
+    "values": { "c++20": 201711 },
+    "headers": ["atomic"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_atomic_value_initialization",
+    "values": { "c++20": 201911 },
+    "headers": ["atomic", "memory"],
+  }, {
+    "name": "__cpp_lib_atomic_wait",
+    "values": { "c++20": 201907 },
+    "headers": ["atomic"],
+    "test_suite_guard": "!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)",
+    "libcxx_guard": "!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_atomic_wait)",
+  }, {
+    "name": "__cpp_lib_barrier",
+    "values": { "c++20": 201907 },
+    "headers": ["barrier"],
+    "test_suite_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_barrier)",
+  }, {
+    "name": "__cpp_lib_bind_back",
+    "values": { "c++2b": 202202 },
+    "headers": ["functional"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_bind_front",
+    "values": { "c++20": 201907 },
+    "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_bit_cast",
+    "values": { "c++20": 201806 },
+    "headers": ["bit"],
+  }, {
+    "name": "__cpp_lib_bitops",
+    "values": { "c++20": 201907 },
+    "headers": ["bit"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_bool_constant",
+    "values": { "c++17": 201505 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_bounded_array_traits",
+    "values": { "c++20": 201902 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_boyer_moore_searcher",
+    "values": { "c++17": 201603 },
+    "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_byte",
+    "values": { "c++17": 201603 },
+    "headers": ["cstddef"],
+  }, {
+    "name": "__cpp_lib_byteswap",
+    "values": { "c++2b": 202110 },
+    "headers": ["bit"],
+  }, {
+    "name": "__cpp_lib_char8_t",
+    "values": { "c++20": 201907 },
+    "headers": ["atomic", "filesystem", "istream", "limits", "locale", "ostream", "string", "string_view"],
+    "test_suite_guard": "defined(__cpp_char8_t)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_CHAR8_T)",
+  }, {
+    "name": "__cpp_lib_chrono",
+    "values": { "c++17": 201611 },
+    "headers": ["chrono"],
+  }, {
+    "name": "__cpp_lib_chrono_udls",
+    "values": { "c++14": 201304 },
+    "headers": ["chrono"],
+  }, {
+    "name": "__cpp_lib_clamp",
+    "values": { "c++17": 201603 },
+    "headers": ["algorithm"],
+  }, {
+    "name": "__cpp_lib_complex_udls",
+    "values": { "c++14": 201309 },
+    "headers": ["complex"],
+  }, {
+    "name": "__cpp_lib_concepts",
+    "values": { "c++20": 202002 },
+    "headers": ["concepts"],
+  }, {
+    "name": "__cpp_lib_constexpr_algorithms",
+    "values": { "c++20": 201806 },
+    "headers": ["algorithm", "utility"],
+  }, {
+    "name": "__cpp_lib_constexpr_bitset",
+    "values": { "c++2b": 202207 },
+    "headers": ["bitset"],
+  }, {
+    "name": "__cpp_lib_constexpr_charconv",
+    "values": { "c++2b": 202207 },
+    "headers": ["charconv"],
+  }, {
+    "name": "__cpp_lib_constexpr_cmath",
+    "values": { "c++2b": 202202 },
+    "headers": ["cmath", "cstdlib"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_constexpr_complex",
+    "values": { "c++20": 201711 },
+    "headers": ["complex"],
+  }, {
+    "name": "__cpp_lib_constexpr_dynamic_alloc",
+    "values": { "c++20": 201907 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_constexpr_functional",
+    "values": { "c++20": 201907 },
+    "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_constexpr_iterator",
+    "values": { "c++20": 201811 },
+    "headers": ["iterator"],
+  }, {
+    "name": "__cpp_lib_constexpr_memory",
+    "values": { "c++20": 201811, "c++2b": 202202 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_constexpr_numeric",
+    "values": { "c++20": 201911 },
+    "headers": ["numeric"],
+  }, {
+    "name": "__cpp_lib_constexpr_string",
+    "values": { "c++20": 201907 },
+    "headers": ["string"],
+  }, {
+    "name": "__cpp_lib_constexpr_string_view",
+    "values": { "c++20": 201811 },
+    "headers": ["string_view"],
+  }, {
+    "name": "__cpp_lib_constexpr_tuple",
+    "values": { "c++20": 201811 },
+    "headers": ["tuple"],
+  }, {
+    "name": "__cpp_lib_constexpr_typeinfo",
+    "values": { "c++2b": 202106 },
+    "headers": ["typeinfo"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_constexpr_utility",
+    "values": { "c++20": 201811 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_constexpr_vector",
+    "values": { "c++20": 201907 },
+    "headers": ["vector"],
+  }, {
+    "name": "__cpp_lib_coroutine",
+    "values": { "c++20": 201902 },
+    "headers": ["coroutine"],
+  }, {
+    "name": "__cpp_lib_destroying_delete",
+    "values": { "c++20": 201806 },
+    "headers": ["new"],
+    "test_suite_guard": "TEST_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L",
+    "libcxx_guard": "_LIBCPP_STD_VER > 17 && defined(__cpp_impl_destroying_delete) && __cpp_impl_destroying_delete >= 201806L",
+  }, {
+    "name": "__cpp_lib_enable_shared_from_this",
+    "values": { "c++17": 201603 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_endian",
+    "values": { "c++20": 201907 },
+    "headers": ["bit"],
+  }, {
+    "name": "__cpp_lib_erase_if",
+    "values": { "c++20": 202002 },
+    "headers": ["deque", "forward_list", "list", "map", "set", "string", "unordered_map", "unordered_set", "vector"],
+  }, {
+    "name": "__cpp_lib_exchange_function",
+    "values": { "c++14": 201304 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_execution",
+    "values": { "c++17": 201603, "c++20": 201902 },
+    "headers": ["execution"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_expected",
+    "values": { "c++2b": 202202 },
+    "headers": ["expected"],
+  }, {
+    "name": "__cpp_lib_filesystem",
+    "values": { "c++17": 201703 },
+    "headers": ["filesystem"],
+    "test_suite_guard": "!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)",
+    "libcxx_guard": "!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_filesystem)"
+  }, {
+    "name": "__cpp_lib_format",
+    "values": {
+        # "c++20": 201907 Not implemented P1361R2 Integration of chrono with text formatting
+        # "c++20": 202106 Fully implemented
+        # "c++20": 202110 Not implemented P2372R3 Fixing locale handling in chrono formatters
+        "c++20": 202106,
+        # "c++23": 202207, Not implemented P2419R2 Clarify handling of encodings in localized formatting of chrono types
+        },
+    "headers": ["format"],
+    "test_suite_guard": "!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_format) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)",
+    "libcxx_guard": "!defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_format) && !defined(_LIBCPP_HAS_NO_INCOMPLETE_FORMAT)",
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_forward_like",
+    "values": { "c++2b": 202207 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_gcd_lcm",
+    "values": { "c++17": 201606 },
+    "headers": ["numeric"],
+  }, {
+    "name": "__cpp_lib_generic_associative_lookup",
+    "values": { "c++14": 201304 },
+    "headers": ["map", "set"],
+  }, {
+    "name": "__cpp_lib_generic_unordered_lookup",
+    "values": { "c++20": 201811 },
+    "headers": ["unordered_map", "unordered_set"],
+  }, {
+    "name": "__cpp_lib_hardware_interference_size",
+    "values": { "c++17": 201703 },
+    "test_suite_guard": "defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)",
+    "libcxx_guard": "defined(__GCC_DESTRUCTIVE_SIZE) && defined(__GCC_CONSTRUCTIVE_SIZE)",
+    "headers": ["new"],
+  }, {
+    "name": "__cpp_lib_has_unique_object_representations",
+    "values": { "c++17": 201606 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_hypot",
+    "values": { "c++17": 201603 },
+    "headers": ["cmath"],
+  }, {
+    "name": "__cpp_lib_incomplete_container_elements",
+    "values": { "c++17": 201505 },
+    "headers": ["forward_list", "list", "vector"],
+  }, {
+    "name": "__cpp_lib_int_pow2",
+    "values": { "c++20": 202002 },
+    "headers": ["bit"],
+  }, {
+    "name": "__cpp_lib_integer_comparison_functions",
+    "values": { "c++20": 202002 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_integer_sequence",
+    "values": { "c++14": 201304 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_integral_constant_callable",
+    "values": { "c++14": 201304 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_interpolate",
+    "values": { "c++20": 201902 },
+    "headers": ["cmath", "numeric"],
+  }, {
+    "name": "__cpp_lib_invoke",
+    "values": { "c++17": 201411 },
+    "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_invoke_r",
+    "values": { "c++2b": 202106 },
+    "headers": ["functional"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_is_aggregate",
+    "values": { "c++17": 201703 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_constant_evaluated",
+    "values": { "c++20": 201811 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_final",
+    "values": { "c++14": 201402 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_invocable",
+    "values": { "c++17": 201703 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_layout_compatible",
+    "values": { "c++20": 201907 },
+    "headers": ["type_traits"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_is_nothrow_convertible",
+    "values": { "c++20": 201806 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_null_pointer",
+    "values": { "c++14": 201309 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_pointer_interconvertible",
+    "values": { "c++20": 201907 },
+    "headers": ["type_traits"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_is_scoped_enum",
+    "values": { "c++2b": 202011 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_is_swappable",
+    "values": { "c++17": 201603 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_jthread",
+    "values": { "c++20": 201911 },
+    "headers": ["stop_token", "thread"],
+    "test_suite_guard": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_latch",
+    "values": { "c++20": 201907 },
+    "headers": ["latch"],
+    "test_suite_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_latch)",
+  }, {
+    "name": "__cpp_lib_launder",
+    "values": { "c++17": 201606 },
+    "headers": ["new"],
+  }, {
+    "name": "__cpp_lib_list_remove_return_type",
+    "values": { "c++20": 201806 },
+    "headers": ["forward_list", "list"],
+  }, {
+    "name": "__cpp_lib_logical_traits",
+    "values": { "c++17": 201510 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_make_from_tuple",
+    "values": { "c++17": 201606 },
+    "headers": ["tuple"],
+  }, {
+    "name": "__cpp_lib_make_reverse_iterator",
+    "values": { "c++14": 201402 },
+    "headers": ["iterator"],
+  }, {
+    "name": "__cpp_lib_make_unique",
+    "values": { "c++14": 201304 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_map_try_emplace",
+    "values": { "c++17": 201411 },
+    "headers": ["map"],
+  }, {
+    "name": "__cpp_lib_math_constants",
+    "values": { "c++20": 201907 },
+    "headers": ["numbers"],
+  }, {
+    "name": "__cpp_lib_math_special_functions",
+    "values": { "c++17": 201603 },
+    "headers": ["cmath"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_memory_resource",
+    "values": { "c++17": 201603 },
+    "headers": ["memory_resource"],
+  }, {
+    "name": "__cpp_lib_move_only_function",
+    "values": { "c++2b": 202110 },
+    "headers": ["functional"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_node_extract",
+    "values": { "c++17": 201606 },
+    "headers": ["map", "set", "unordered_map", "unordered_set"],
+  }, {
+    "name": "__cpp_lib_nonmember_container_access",
+    "values": { "c++17": 201411 },
+    "headers": ["array", "deque", "forward_list", "iterator", "list", "map", "regex", "set", "string", "unordered_map", "unordered_set", "vector"],
+  }, {
+    "name": "__cpp_lib_not_fn",
+    "values": { "c++17": 201603 },
+    "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_null_iterators",
+    "values": { "c++14": 201304 },
+    "headers": ["iterator"],
+  }, {
+    "name": "__cpp_lib_optional",
+    "values": { "c++17": 201606, "c++2b": 202110 },
+    "headers": ["optional"],
+  }, {
+    "name": "__cpp_lib_out_ptr",
+    "values": { "c++2b": 202106 },
+    "headers": ["memory"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_parallel_algorithm",
+    "values": { "c++17": 201603 },
+    "headers": ["algorithm", "numeric"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_polymorphic_allocator",
+    "values": { "c++20": 201902 },
+    "headers": ["memory_resource"],
+  }, {
+    "name": "__cpp_lib_quoted_string_io",
+    "values": { "c++14": 201304 },
+    "headers": ["iomanip"],
+  }, {
+    "name": "__cpp_lib_ranges",
+    "values": { "c++20": 202106 },
+    "headers": ["algorithm", "functional", "iterator", "memory", "ranges"],
+  }, {
+    "name": "__cpp_lib_ranges_chunk",
+    "values": { "c++2b": 202202 },
+    "headers": ["ranges"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_chunk_by",
+    "values": { "c++2b": 202202 },
+    "headers": ["ranges"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_iota",
+    "values": { "c++2b": 202202 },
+    "headers": ["numeric"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_join_with",
+    "values": { "c++2b": 202202 },
+    "headers": ["ranges"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_slide",
+    "values": { "c++2b": 202202 },
+    "headers": ["ranges"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_starts_ends_with",
+    "values": { "c++2b": 202106 },
+    "headers": ["algorithm"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_to_container",
+    "values": { "c++2b": 202202 },
+    "headers": ["deque", "forward_list", "list", "map", "priority_queue", "queue", "set", "stack", "string", "unordered_map", "unordered_set", "vector"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_zip",
+    "values": { "c++2b": 202110 },
+    "headers": ["ranges", "tuple", "utility"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_raw_memory_algorithms",
+    "values": { "c++17": 201606 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_reference_from_temporary",
+    "values": { "c++2b": 202202 },
+    "headers": ["type_traits"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_remove_cvref",
+    "values": { "c++20": 201711 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_result_of_sfinae",
+    "values": { "c++14": 201210 },
+    "headers": ["functional", "type_traits"],
+  }, {
+    "name": "__cpp_lib_robust_nonmodifying_seq_ops",
+    "values": { "c++14": 201304 },
+    "headers": ["algorithm"],
+  }, {
+    "name": "__cpp_lib_sample",
+    "values": { "c++17": 201603 },
+    "headers": ["algorithm"],
+  }, {
+    "name": "__cpp_lib_scoped_lock",
+    "values": { "c++17": 201703 },
+    "headers": ["mutex"],
+  }, {
+    "name": "__cpp_lib_semaphore",
+    "values": { "c++20": 201907 },
+    "headers": ["semaphore"],
+    "test_suite_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_semaphore)",
+  }, {
+    "name": "__cpp_lib_shared_mutex",
+    "values": { "c++17": 201505 },
+    "headers": ["shared_mutex"],
+    "test_suite_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_mutex)",
+  }, {
+    "name": "__cpp_lib_shared_ptr_arrays",
+    "values": { "c++17": 201611, "c++20": 201707 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_shared_ptr_weak_type",
+    "values": { "c++17": 201606 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_shared_timed_mutex",
+    "values": { "c++14": 201402 },
+    "headers": ["shared_mutex"],
+    "test_suite_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)",
+    "libcxx_guard": "!defined(_LIBCPP_HAS_NO_THREADS) && !defined(_LIBCPP_AVAILABILITY_DISABLE_FTM___cpp_lib_shared_timed_mutex)",
+  }, {
+    "name": "__cpp_lib_shift",
+    "values": { "c++20": 201806 },
+    "headers": ["algorithm"],
+  }, {
+    "name": "__cpp_lib_smart_ptr_for_overwrite",
+    "values": { "c++20": 202002 },
+    "headers": ["memory"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_source_location",
+    "values": { "c++20": 201907 },
+    "headers": ["source_location"],
+    "test_suite_guard": "__has_builtin(__builtin_source_location)",
+    "libcxx_guard": "__has_builtin(__builtin_source_location)",
+  }, {
+    "name": "__cpp_lib_span",
+    "values": { "c++20": 202002 },
+    "headers": ["span"],
+  }, {
+    "name": "__cpp_lib_spanstream",
+    "values": { "c++2b": 202106 },
+    "headers": ["spanstream"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ssize",
+    "values": { "c++20": 201902 },
+    "headers": ["iterator"],
+  }, {
+    "name": "__cpp_lib_stacktrace",
+    "values": { "c++2b": 202011 },
+    "headers": ["stacktrace"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_starts_ends_with",
+    "values": { "c++20": 201711 },
+    "headers": ["string", "string_view"],
+  }, {
+    "name": "__cpp_lib_stdatomic_h",
+    "values": { "c++2b": 202011 },
+    "headers": ["stdatomic.h"],
+  }, {
+    "name": "__cpp_lib_string_contains",
+    "values": { "c++2b": 202011 },
+    "headers": ["string", "string_view"],
+  }, {
+    "name": "__cpp_lib_string_resize_and_overwrite",
+    "values": { "c++2b": 202110 },
+    "headers": ["string"],
+  }, {
+    "name": "__cpp_lib_string_udls",
+    "values": { "c++14": 201304 },
+    "headers": ["string"],
+  }, {
+    "name": "__cpp_lib_string_view",
+    "values": { "c++17": 201606, "c++20": 201803 },
+    "headers": ["string", "string_view"],
+  }, {
+    "name": "__cpp_lib_syncbuf",
+    "values": { "c++20": 201803 },
+    "headers": ["syncstream"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_three_way_comparison",
+    "values": { "c++20": 201907 },
+    "headers": ["compare"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_to_address",
+    "values": { "c++20": 201711 },
+    "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_to_array",
+    "values": { "c++20": 201907 },
+    "headers": ["array"],
+  }, {
+    "name": "__cpp_lib_to_chars",
+    "values": { "c++17": 201611 },
+    "headers": ["charconv"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_to_underlying",
+    "values": { "c++2b": 202102 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_transformation_trait_aliases",
+    "values": { "c++14": 201304 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_transparent_operators",
+    "values": { "c++14": 201210, "c++17": 201510 },
+    "headers": ["functional", "memory"],
+  }, {
+    "name": "__cpp_lib_tuple_element_t",
+    "values": { "c++14": 201402 },
+    "headers": ["tuple"],
+  }, {
+    "name": "__cpp_lib_tuples_by_type",
+    "values": { "c++14": 201304 },
+    "headers": ["tuple", "utility"],
+  }, {
+    "name": "__cpp_lib_type_identity",
+    "values": { "c++20": 201806 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_type_trait_variable_templates",
+    "values": { "c++17": 201510 },
+    "headers": ["type_traits"],
+  }, {
+    "name": "__cpp_lib_uncaught_exceptions",
+    "values": { "c++17": 201411 },
+    "headers": ["exception"],
+  }, {
+    "name": "__cpp_lib_unordered_map_try_emplace",
+    "values": { "c++17": 201411 },
+    "headers": ["unordered_map"],
+  }, {
+    "name": "__cpp_lib_unreachable",
+    "values": { "c++2b": 202202 },
+    "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_unwrap_ref",
+    "values": { "c++20": 201811 },
+    "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_variant",
+    "values": { "c++17": 202102 },
+    "headers": ["variant"],
+  }, {
+    "name": "__cpp_lib_void_t",
+    "values": { "c++17": 201411 },
+    "headers": ["type_traits"],
+  }
+]]
+
+assert feature_test_macros == sorted(feature_test_macros, key=lambda tc: tc["name"])
+assert all(tc["headers"] == sorted(tc["headers"]) for tc in feature_test_macros)
+assert all(("libcxx_guard" in tc) == ("test_suite_guard" in tc) for tc in feature_test_macros)
+assert all(all(key in ["name", "values", "headers", "libcxx_guard", "test_suite_guard", "unimplemented"] for key in tc.keys()) for tc in feature_test_macros)
+
+# Map from each header to the Lit annotations that should be used for
+# tests that include that header.
+#
+# For example, when threads are not supported, any test that includes
+# <thread> should be marked as UNSUPPORTED, because including <thread>
+# is a hard error in that case.
+lit_markup = {
+  "barrier": ["UNSUPPORTED: no-threads"],
+  "filesystem": ["UNSUPPORTED: no-filesystem"],
+  "format": ["UNSUPPORTED: libcpp-has-no-incomplete-format"],
+  "iomanip": ["UNSUPPORTED: no-localization"],
+  "ios": ["UNSUPPORTED: no-localization"],
+  "iostream": ["UNSUPPORTED: no-localization"],
+  "istream": ["UNSUPPORTED: no-localization"],
+  "latch": ["UNSUPPORTED: no-threads"],
+  "locale": ["UNSUPPORTED: no-localization"],
+  "mutex": ["UNSUPPORTED: no-threads"],
+  "ostream": ["UNSUPPORTED: no-localization"],
+  "regex": ["UNSUPPORTED: no-localization"],
+  "semaphore": ["UNSUPPORTED: no-threads"],
+  "shared_mutex": ["UNSUPPORTED: no-threads"],
+  "stdatomic.h": ["UNSUPPORTED: no-threads"],
+  "thread": ["UNSUPPORTED: no-threads"],
+}
+
+def get_std_dialects():
+  std_dialects = ['c++14', 'c++17', 'c++20', 'c++2b']
+  return list(std_dialects)
+
+def get_first_std(d):
+    for s in get_std_dialects():
+        if s in d.keys():
+            return s
+    return None
+
+def get_last_std(d):
+  rev_dialects = get_std_dialects()
+  rev_dialects.reverse()
+  for s in rev_dialects:
+    if s in d.keys():
+      return s
+  return None
+
+def get_std_before(d, std):
+  std_dialects = get_std_dialects()
+  candidates = std_dialects[0:std_dialects.index(std)]
+  candidates.reverse()
+  for cand in candidates:
+    if cand in d.keys():
+      return cand
+  return None
+
+def get_value_before(d, std):
+  new_std = get_std_before(d, std)
+  if new_std is None:
+    return None
+  return d[new_std]
+
+def get_for_std(d, std):
+  # This catches the C++11 case for which there should be no defined feature
+  # test macros.
+  std_dialects = get_std_dialects()
+  if std not in std_dialects:
+    return None
+  # Find the value for the newest C++ dialect between C++14 and std
+  std_list = list(std_dialects[0:std_dialects.index(std)+1])
+  std_list.reverse()
+  for s in std_list:
+    if s in d.keys():
+      return d[s]
+  return None
+
+def get_std_number(std):
+    return std.replace('c++', '')
+
+"""
+  Functions to produce the <version> header
+"""
+
+def produce_macros_definition_for_std(std):
+  result = ""
+  indent = 55
+  for tc in feature_test_macros:
+    if std not in tc["values"]:
+      continue
+    inner_indent = 1
+    if 'test_suite_guard' in tc.keys():
+      result += "# if %s\n" % tc["libcxx_guard"]
+      inner_indent += 2
+    if get_value_before(tc["values"], std) is not None:
+      assert 'test_suite_guard' not in tc.keys()
+      result += "# undef  %s\n" % tc["name"]
+    line = "#%sdefine %s" % ((" " * inner_indent), tc["name"])
+    line += " " * (indent - len(line))
+    line += " %sL" % tc["values"][std]
+    if 'unimplemented' in tc.keys():
+      line = "// " + line
+    result += line
+    result += "\n"
+    if 'test_suite_guard' in tc.keys():
+      result += "# endif\n"
+  return result.strip()
+
+def produce_macros_definitions():
+  macro_definition_template = """#if _LIBCPP_STD_VER > {previous_std_number}
+{macro_definition}
+#endif"""
+
+  macros_definitions = []
+  previous_std_number = '11'
+  for std in get_std_dialects():
+    macros_definitions.append(
+      macro_definition_template.format(previous_std_number=previous_std_number,
+                                       macro_definition=produce_macros_definition_for_std(std)))
+    previous_std_number = get_std_number(std)
+
+  return '\n\n'.join(macros_definitions)
+
+def chunks(l, n):
+  """Yield successive n-sized chunks from l."""
+  for i in range(0, len(l), n):
+    yield l[i:i + n]
+
+def produce_version_synopsis():
+  indent = 56
+  header_indent = 56 + len("20XXYYL ")
+  result = ""
+  def indent_to(s, val):
+    if len(s) >= val:
+      return s
+    s += " " * (val - len(s))
+    return s
+  line = indent_to("Macro name", indent) + "Value"
+  line = indent_to(line, header_indent) + "Headers"
+  result += line + "\n"
+  for tc in feature_test_macros:
+    prev_defined_std = get_last_std(tc["values"])
+    line = "{name: <{indent}}{value}L ".format(name=tc['name'], indent=indent,
+                                               value=tc["values"][prev_defined_std])
+    headers = list(tc["headers"])
+    headers.remove("version")
+    for chunk in chunks(headers, 3):
+      line = indent_to(line, header_indent)
+      chunk = ['<%s>' % header for header in chunk]
+      line += ' '.join(chunk)
+      result += line
+      result += "\n"
+      line = ""
+    while True:
+      prev_defined_std = get_std_before(tc["values"], prev_defined_std)
+      if prev_defined_std is None:
+        break
+      result += "%s%sL // %s\n" % (indent_to("", indent), tc["values"][prev_defined_std],
+                                prev_defined_std.replace("c++", "C++"))
+  return result
+
+
+def produce_version_header():
+  template="""// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_VERSIONH
+#define _LIBCPP_VERSIONH
+
+/*
+  version synopsis
+
+{synopsis}
+
+*/
+
+#include <__assert> // all public C++ headers provide the assertion handler
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+// clang-format off
+
+{cxx_macros}
+
+// clang-format on
+
+#endif // _LIBCPP_VERSIONH
+"""
+
+  version_str = template.format(
+      synopsis=produce_version_synopsis().strip(),
+      cxx_macros=produce_macros_definitions())
+  version_header_path = os.path.join(include_path, 'version')
+  with open(version_header_path, 'w', newline='\n') as f:
+    f.write(version_str)
+
+
+"""
+    Functions to produce test files
+"""
+
+test_types = {
+  "undefined": """
+# ifdef {name}
+#   error "{name} should not be defined before {std_first}"
+# endif
+""",
+
+  "test_suite_guard": """
+# if {test_suite_guard}
+#   ifndef {name}
+#     error "{name} should be defined in {std}"
+#   endif
+#   if {name} != {value}
+#     error "{name} should have the value {value} in {std}"
+#   endif
+# else
+#   ifdef {name}
+#     error "{name} should not be defined when the requirement '{test_suite_guard}' is not met!"
+#   endif
+# endif
+""",
+
+  "unimplemented": """
+# if !defined(_LIBCPP_VERSION)
+#   ifndef {name}
+#     error "{name} should be defined in {std}"
+#   endif
+#   if {name} != {value}
+#     error "{name} should have the value {value} in {std}"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef {name}
+#     error "{name} should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+""",
+
+  "defined": """
+# ifndef {name}
+#   error "{name} should be defined in {std}"
+# endif
+# if {name} != {value}
+#   error "{name} should have the value {value} in {std}"
+# endif
+"""
+}
+
+def generate_std_test(test_list, std):
+  result = ""
+  for tc in test_list:
+    val = get_for_std(tc["values"], std)
+    if val is not None:
+      val = "%sL" % val
+    if val is None:
+      result += test_types["undefined"].format(name=tc["name"], std_first=get_first_std(tc["values"]))
+    elif 'unimplemented' in tc.keys():
+      result += test_types["unimplemented"].format(name=tc["name"], value=val, std=std)
+    elif "test_suite_guard" in tc.keys():
+      result += test_types["test_suite_guard"].format(name=tc["name"], value=val, std=std, test_suite_guard=tc["test_suite_guard"])
+    else:
+      result +=  test_types["defined"].format(name=tc["name"], value=val, std=std)
+  return result.strip()
+
+def generate_std_tests(test_list):
+  std_tests_template = """#if TEST_STD_VER < {first_std_number}
+
+{pre_std_test}
+
+{other_std_tests}
+
+#elif TEST_STD_VER > {penultimate_std_number}
+
+{last_std_test}
+
+#endif // TEST_STD_VER > {penultimate_std_number}"""
+
+  std_dialects = get_std_dialects()
+  assert not get_std_number(std_dialects[-1]).isnumeric()
+
+  other_std_tests = []
+  for std in std_dialects[:-1]:
+    other_std_tests.append('#elif TEST_STD_VER == ' + get_std_number(std))
+    other_std_tests.append(generate_std_test(test_list, std))
+
+  std_tests = std_tests_template.format(first_std_number=get_std_number(std_dialects[0]),
+                                        pre_std_test=generate_std_test(test_list, 'c++11'),
+                                        other_std_tests='\n\n'.join(other_std_tests),
+                                        penultimate_std_number=get_std_number(std_dialects[-2]),
+                                        last_std_test=generate_std_test(test_list, std_dialects[-1]))
+
+  return std_tests
+
+def generate_synopsis(test_list):
+    max_name_len = max([len(tc["name"]) for tc in test_list])
+    indent = max_name_len + 8
+    def mk_line(prefix, suffix):
+        return "{prefix: <{max_len}}{suffix}\n".format(prefix=prefix, suffix=suffix,
+        max_len=indent)
+    result = ""
+    result += mk_line("/*  Constant", "Value")
+    for tc in test_list:
+        prefix = "    %s" % tc["name"]
+        for std in [s for s in get_std_dialects() if s in tc["values"].keys()]:
+            result += mk_line(prefix, "%sL [%s]" % (tc["values"][std], std.replace("c++", "C++")))
+            prefix = ""
+    result += "*/"
+    return result
+
+def produce_tests():
+  headers = set([h for tc in feature_test_macros for h in tc["headers"]])
+  for h in headers:
+    test_list = [tc for tc in feature_test_macros if h in tc["headers"]]
+    if not has_header(h):
+      for tc in test_list:
+        assert 'unimplemented' in tc.keys()
+      continue
+    markup = '\n'.join('// ' + tag for tag in lit_markup.get(h, []))
+    test_body = \
+"""//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by {script_name}
+// and should not be edited manually.
+//
+// clang-format off
+{markup}
+// <{header}>
+
+// Test the feature test macros defined by <{header}>
+
+{synopsis}
+
+#include <{header}>
+#include "test_macros.h"
+
+{cxx_tests}
+
+""".format(script_name=script_name,
+           header=h,
+           markup=('\n{}\n'.format(markup) if markup else ''),
+           synopsis=generate_synopsis(test_list),
+           cxx_tests=generate_std_tests(test_list))
+    test_name = "{header}.version.compile.pass.cpp".format(header=h)
+    out_path = os.path.join(macro_test_path, test_name)
+    with open(out_path, 'w', newline='\n') as f:
+      f.write(test_body)
+
+"""
+    Produce documentation for the feature test macros
+"""
+
+def make_widths(grid):
+  widths = []
+  for i in range(0, len(grid[0])):
+    cell_width = 2 + max(reduce(lambda x,y: x+y, [[len(row[i])] for row in grid], []))
+    widths += [cell_width]
+  return widths
+
+def create_table(grid, indent):
+  indent_str = ' '*indent
+  col_widths = make_widths(grid)
+  result = [indent_str + add_divider(col_widths, 2)]
+  header_flag = 2
+  for row_i in range(0, len(grid)):
+    row = grid[row_i]
+    line = indent_str + ' '.join([pad_cell(row[i], col_widths[i]) for i in range(0, len(row))])
+    result.append(line.rstrip())
+    is_cxx_header = row[0].startswith('**')
+    if row_i == len(grid) - 1:
+      header_flag = 2
+    separator = indent_str + add_divider(col_widths, 1 if is_cxx_header else header_flag)
+    result.append(separator.rstrip())
+    header_flag = 0
+  return '\n'.join(result)
+
+def add_divider(widths, header_flag):
+  if header_flag == 2:
+    return ' '.join(['='*w for w in widths])
+  if header_flag == 1:
+    return '-'.join(['-'*w for w in widths])
+  else:
+    return ' '.join(['-'*w for w in widths])
+
+def pad_cell(s, length, left_align=True):
+  padding = ((length - len(s)) * ' ')
+  return s + padding
+
+
+def get_status_table():
+  table = [["Macro Name", "Value"]]
+  for std in get_std_dialects():
+    table += [["**" + std.replace("c++", "C++ ") + "**", ""]]
+    for tc in feature_test_macros:
+      if std not in tc["values"].keys():
+        continue
+      value = "``%sL``" % tc["values"][std]
+      if 'unimplemented' in tc.keys():
+        value = '*unimplemented*'
+      table += [["``%s``" % tc["name"], value]]
+  return table
+
+def produce_docs():
+  doc_str = """.. _FeatureTestMacroTable:
+
+==========================
+Feature Test Macro Support
+==========================
+
+.. contents::
+   :local:
+
+Overview
+========
+
+This file documents the feature test macros currently supported by libc++.
+
+.. _feature-status:
+
+Status
+======
+
+.. table:: Current Status
+    :name: feature-status-table
+    :widths: auto
+
+{status_tables}
+
+""".format(status_tables=create_table(get_status_table(), 4))
+
+  table_doc_path = os.path.join(docs_path, 'FeatureTestMacroTable.rst')
+  with open(table_doc_path, 'w', newline='\n') as f:
+    f.write(doc_str)
+
+def main():
+  produce_version_header()
+  produce_tests()
+  produce_docs()
+
+
+if __name__ == '__main__':
+  main()
diff --git a/app/src/main/cpp/libcxx/utils/generate_header_inclusion_tests.py b/app/src/main/cpp/libcxx/utils/generate_header_inclusion_tests.py
new file mode 100644
index 0000000..e96551d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_header_inclusion_tests.py
@@ -0,0 +1,207 @@
+#!/usr/bin/env python
+
+import os
+
+
+def get_libcxx_paths():
+    utils_path = os.path.dirname(os.path.abspath(__file__))
+    script_name = os.path.basename(__file__)
+    assert os.path.exists(utils_path)
+    src_root = os.path.dirname(utils_path)
+    test_path = os.path.join(src_root, 'test', 'libcxx', 'inclusions')
+    assert os.path.exists(test_path)
+    assert os.path.exists(os.path.join(test_path, 'algorithm.inclusions.compile.pass.cpp'))
+    return script_name, src_root, test_path
+
+
+script_name, source_root, test_path = get_libcxx_paths()
+
+
+# This table was produced manually, by grepping the TeX source of the Standard's
+# library clauses for the string "#include". Each header's synopsis contains
+# explicit "#include" directives for its mandatory inclusions.
+# For example, [algorithm.syn] contains "#include <initializer_list>".
+#
+mandatory_inclusions = {
+    "algorithm": ["initializer_list"],
+    "array": ["compare", "initializer_list"],
+    "bitset": ["iosfwd", "string"],
+    "chrono": ["compare"],
+    "cinttypes": ["cstdint"],
+    "complex.h": ["complex"],
+    "coroutine": ["compare"],
+    "deque": ["compare", "initializer_list"],
+    "filesystem": ["compare"],
+    "forward_list": ["compare", "initializer_list"],
+    "ios": ["iosfwd"],
+    "iostream": ["ios", "istream", "ostream", "streambuf"],
+    "iterator": ["compare", "concepts"],
+    "list": ["compare", "initializer_list"],
+    "map": ["compare", "initializer_list"],
+    "memory": ["compare"],
+    "optional": ["compare"],
+    "queue": ["compare", "initializer_list"],
+    "random": ["initializer_list"],
+    "ranges": ["compare", "initializer_list", "iterator"],
+    "regex": ["compare", "initializer_list"],
+    "set": ["compare", "initializer_list"],
+    "stack": ["compare", "initializer_list"],
+    "string_view": ["compare"],
+    "string": ["compare", "initializer_list"],
+    # TODO "syncstream": ["ostream"],
+    "system_error": ["compare"],
+    "tgmath.h": ["cmath", "complex"],
+    "thread": ["compare"],
+    "tuple": ["compare"],
+    "typeindex": ["compare"],
+    "unordered_map": ["compare", "initializer_list"],
+    "unordered_set": ["compare", "initializer_list"],
+    "utility": ["compare", "initializer_list"],
+    "valarray": ["initializer_list"],
+    "variant": ["compare"],
+    "vector": ["compare", "initializer_list"],
+}
+
+new_in_version = {
+    "chrono": "11",
+    "compare": "20",
+    "concepts": "20",
+    "coroutine": "20",
+    "cuchar": "11",
+    "expected": "23",
+    "filesystem": "17",
+    "initializer_list": "11",
+    "optional": "17",
+    "ranges": "20",
+    "string_view": "17",
+    "syncstream": "20",
+    "system_error": "11",
+    "thread": "11",
+    "tuple": "11",
+    "uchar.h": "11",
+    "unordered_map": "11",
+    "unordered_set": "11",
+    "variant": "17",
+}
+
+assert all(v == sorted(v) for k, v in mandatory_inclusions.items())
+
+# Map from each header to the Lit annotations that should be used for
+# tests that include that header.
+#
+# For example, when threads are not supported, any test that includes
+# <thread> should be marked as UNSUPPORTED, because including <thread>
+# is a hard error in that case.
+lit_markup = {
+  "barrier": ["UNSUPPORTED: no-threads"],
+  "filesystem": ["UNSUPPORTED: no-filesystem"],
+  "format": ["UNSUPPORTED: libcpp-has-no-incomplete-format"],
+  "iomanip": ["UNSUPPORTED: no-localization"],
+  "ios": ["UNSUPPORTED: no-localization"],
+  "iostream": ["UNSUPPORTED: no-localization"],
+  "istream": ["UNSUPPORTED: no-localization"],
+  "latch": ["UNSUPPORTED: no-threads"],
+  "locale": ["UNSUPPORTED: no-localization"],
+  "mutex": ["UNSUPPORTED: no-threads"],
+  "ostream": ["UNSUPPORTED: no-localization"],
+  "regex": ["UNSUPPORTED: no-localization"],
+  "semaphore": ["UNSUPPORTED: no-threads"],
+  "shared_mutex": ["UNSUPPORTED: no-threads"],
+  "thread": ["UNSUPPORTED: no-threads"]
+}
+
+
+def get_std_ver_test(includee):
+    v = new_in_version.get(includee, "03")
+    if v == "03":
+        return ''
+    versions = ["03", "11", "14", "17", "20"]
+    return 'TEST_STD_VER > {} && '.format(max(i for i in versions if i < v))
+
+
+def get_unsupported_line(includee):
+    v = new_in_version.get(includee, "03")
+    return {
+        "03": [],
+        "11": ['UNSUPPORTED: c++03'],
+        "14": ['UNSUPPORTED: c++03, c++11'],
+        "17": ['UNSUPPORTED: c++03, c++11, c++14'],
+        "20": ['UNSUPPORTED: c++03, c++11, c++14, c++17'],
+        "2b": ['UNSUPPORTED: c++03, c++11, c++14, c++17, c++20'],
+    }[v]
+
+
+def get_libcpp_header_symbol(header_name):
+    return '_LIBCPP_' + header_name.upper().replace('.', '_')
+
+
+def get_includer_symbol_test(includer):
+    symbol = get_libcpp_header_symbol(includer)
+    return """
+#if !defined({symbol})
+ #   error "{message}"
+#endif
+    """.strip().format(
+        symbol=symbol,
+        message="<{}> was expected to define {}".format(includer, symbol),
+    )
+
+
+def get_ifdef(includer, includee):
+    version = max(new_in_version.get(h, "03") for h in [includer, includee])
+    symbol = get_libcpp_header_symbol(includee)
+    return """
+#if {includee_test}!defined({symbol})
+ #   error "{message}"
+#endif
+    """.strip().format(
+        includee_test=get_std_ver_test(includee),
+        symbol=symbol,
+        message="<{}> should include <{}> in C++{} and later".format(includer, includee, version)
+    )
+
+
+test_body_template = """
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by {script_name}
+// and should not be edited manually.
+//
+// clang-format off
+{markup}
+// <{header}>
+
+// Test that <{header}> includes all the other headers it's supposed to.
+
+#include <{header}>
+#include "test_macros.h"
+
+{test_includers_symbol}
+{test_per_includee}
+""".strip()
+
+
+def produce_tests():
+    for includer, includees in mandatory_inclusions.items():
+        markup_tags = get_unsupported_line(includer) + lit_markup.get(includer, [])
+        test_body = test_body_template.format(
+            script_name=script_name,
+            header=includer,
+            markup=('\n' + '\n'.join('// ' + m for m in markup_tags) + '\n') if markup_tags else '',
+            test_includers_symbol=get_includer_symbol_test(includer),
+            test_per_includee='\n'.join(get_ifdef(includer, includee) for includee in includees),
+        )
+        test_name = "{header}.inclusions.compile.pass.cpp".format(header=includer)
+        out_path = os.path.join(test_path, test_name)
+        with open(out_path, 'w', newline='\n') as f:
+            f.write(test_body + '\n')
+
+
+if __name__ == '__main__':
+    produce_tests()
diff --git a/app/src/main/cpp/libcxx/utils/generate_header_tests.py b/app/src/main/cpp/libcxx/utils/generate_header_tests.py
new file mode 100644
index 0000000..2981963
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_header_tests.py
@@ -0,0 +1,155 @@
+#!/usr/bin/env python
+
+import contextlib
+import glob
+import io
+import os
+import pathlib
+import re
+
+header_restrictions = {
+    "barrier": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "future": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "latch": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "mutex": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "semaphore": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "shared_mutex": "!defined(_LIBCPP_HAS_NO_THREADS)",
+    "stdatomic.h": "__cplusplus > 202002L && !defined(_LIBCPP_HAS_NO_THREADS)",
+    "thread": "!defined(_LIBCPP_HAS_NO_THREADS)",
+
+    "filesystem": "!defined(_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY)",
+
+    # TODO LLVM17: simplify this to __cplusplus >= 202002L
+    "coroutine": "(defined(__cpp_impl_coroutine) && __cpp_impl_coroutine >= 201902L) || (defined(__cpp_coroutines) && __cpp_coroutines >= 201703L)",
+
+    "clocale": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "codecvt": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "fstream": "!defined(_LIBCPP_HAS_NO_LOCALIZATION) && !defined(_LIBCPP_HAS_NO_FSTREAM)",
+    "iomanip": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "ios": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "iostream": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "istream": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "locale.h": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "locale": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "ostream": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "regex": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "sstream": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "streambuf": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+    "strstream": "!defined(_LIBCPP_HAS_NO_LOCALIZATION)",
+
+    "wctype.h": "!defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)",
+    "cwctype": "!defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)",
+    "cwchar": "!defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)",
+    "wchar.h": "!defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)",
+
+    "experimental/algorithm": "__cplusplus >= 201103L",
+    "experimental/coroutine": "__cplusplus >= 201103L && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_COROUTINES)",
+    "experimental/deque": "__cplusplus >= 201103L",
+    "experimental/forward_list": "__cplusplus >= 201103L",
+    "experimental/functional": "__cplusplus >= 201103L",
+    "experimental/iterator": "__cplusplus >= 201103L",
+    "experimental/list": "__cplusplus >= 201103L",
+    "experimental/map": "__cplusplus >= 201103L",
+    "experimental/memory_resource": "__cplusplus >= 201103L",
+    "experimental/propagate_const": "__cplusplus >= 201103L",
+    "experimental/regex": "!defined(_LIBCPP_HAS_NO_LOCALIZATION) && __cplusplus >= 201103L",
+    "experimental/set": "__cplusplus >= 201103L",
+    "experimental/simd": "__cplusplus >= 201103L",
+    "experimental/span": "__cplusplus >= 201103L",
+    "experimental/string": "__cplusplus >= 201103L",
+    "experimental/type_traits": "__cplusplus >= 201103L",
+    "experimental/unordered_map": "__cplusplus >= 201103L",
+    "experimental/unordered_set": "__cplusplus >= 201103L",
+    "experimental/utility": "__cplusplus >= 201103L",
+    "experimental/vector": "__cplusplus >= 201103L",
+}
+
+private_headers_still_public_in_modules = [
+    '__assert', '__bsd_locale_defaults.h', '__bsd_locale_fallbacks.h', '__config',
+    '__config_site.in', '__debug', '__hash_table',
+    '__threading_support', '__tree', '__undef_macros', '__verbose_abort'
+]
+
+def find_script(file):
+    """Finds the script used to generate a file inside the file itself. The script is delimited by
+       BEGIN-SCRIPT and END-SCRIPT markers.
+    """
+    with open(file, 'r') as f:
+        content = f.read()
+
+    match = re.search(r'^BEGIN-SCRIPT$(.+)^END-SCRIPT$', content, flags=re.MULTILINE | re.DOTALL)
+    if not match:
+        raise RuntimeError("Was unable to find a script delimited with BEGIN-SCRIPT/END-SCRIPT markers in {}".format(test_file))
+    return match.group(1)
+
+def execute_script(script, variables):
+    """Executes the provided Mako template with the given variables available during the
+       evaluation of the script, and returns the result.
+    """
+    code = compile(script, 'fake-filename', 'exec')
+    output = io.StringIO()
+    with contextlib.redirect_stdout(output):
+        exec(code, variables)
+        output = output.getvalue()
+    return output
+
+def generate_new_file(file, new_content):
+    """Generates the new content of the file by inserting the new content in-between
+       two '// GENERATED-MARKER' markers located in the file.
+    """
+    with open(file, 'r') as f:
+        old_content = f.read()
+
+    try:
+        before, begin_marker, _, end_marker, after = re.split(r'(// GENERATED-MARKER\n)', old_content, flags=re.MULTILINE | re.DOTALL)
+    except ValueError:
+        raise RuntimeError("Failed to split {} based on markers, please make sure the file has exactly two '// GENERATED-MARKER' occurrences".format(file))
+
+    return before + begin_marker + new_content + end_marker + after
+
+def produce(test_file, variables):
+    script = find_script(test_file)
+    result = execute_script(script, variables)
+    new_content = generate_new_file(test_file, result)
+    with open(test_file, 'w', newline='\n') as f:
+        f.write(new_content)
+
+def is_header(file):
+    """Returns whether the given file is a header (i.e. not a directory or the modulemap file)."""
+    return not file.is_dir() and not file.name == 'module.modulemap.in' and file.name != 'libcxx.imp'
+
+
+def main():
+    monorepo_root = pathlib.Path(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+    include = pathlib.Path(os.path.join(monorepo_root, 'libcxx', 'include'))
+    test = pathlib.Path(os.path.join(monorepo_root, 'libcxx', 'test'))
+    assert(monorepo_root.exists())
+
+    toplevel_headers     = sorted(str(p.relative_to(include)) for p in include.glob('[a-z]*') if is_header(p))
+    experimental_headers = sorted(str(p.relative_to(include)) for p in include.glob('experimental/[a-z]*') if is_header(p))
+    extended_headers     = sorted(str(p.relative_to(include)) for p in include.glob('ext/[a-z]*') if is_header(p))
+    public_headers       = toplevel_headers + experimental_headers + extended_headers
+    private_headers      = sorted(str(p.relative_to(include)) for p in include.rglob('*') if is_header(p) and str(p.relative_to(include)).startswith('__'))
+    variables = {
+        'toplevel_headers': toplevel_headers,
+        'experimental_headers': experimental_headers,
+        'extended_headers': extended_headers,
+        'public_headers': public_headers,
+        'private_headers': private_headers,
+        'header_restrictions': header_restrictions,
+        'private_headers_still_public_in_modules': private_headers_still_public_in_modules
+    }
+
+    produce(test.joinpath('libcxx/assertions/headers_declare_verbose_abort.sh.cpp'), variables)
+    produce(test.joinpath('libcxx/clang_tidy.sh.cpp'), variables)
+    produce(test.joinpath('libcxx/double_include.sh.cpp'), variables)
+    produce(test.joinpath('libcxx/min_max_macros.compile.pass.cpp'), variables)
+    produce(test.joinpath('libcxx/modules_include.sh.cpp'), variables)
+    produce(test.joinpath('libcxx/nasty_macros.compile.pass.cpp'), variables)
+    produce(test.joinpath('libcxx/no_assert_include.compile.pass.cpp'), variables)
+    produce(test.joinpath('libcxx/private_headers.verify.cpp'), variables)
+    produce(test.joinpath('libcxx/transitive_includes.sh.cpp'), variables)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/app/src/main/cpp/libcxx/utils/generate_iwyu_mapping.py b/app/src/main/cpp/libcxx/utils/generate_iwyu_mapping.py
new file mode 100644
index 0000000..1e0242b
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/generate_iwyu_mapping.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+
+import os, pathlib, sys
+
+def generate(private, public):
+    return f'{{ include: [ "{private}", "private", "<{public}>", "public" ] }}'
+
+
+def panic(file):
+    print(f'========== {__file__} error ==========', file=sys.stderr)
+    print(f'\tFile \'{file}\' is a top-level detail header without a mapping', file=sys.stderr)
+    sys.exit(1)
+
+
+def generate_map(include):
+    detail_files = []
+    detail_directories = []
+    c_headers = []
+
+    for i in include.iterdir():
+        if i.is_dir() and i.name.startswith('__'):
+            detail_directories.append(f'{i.name}')
+            continue
+
+        if i.name.startswith('__'):
+            detail_files.append(i.name)
+            continue
+
+        if i.name.endswith('.h'):
+            c_headers.append(i.name)
+
+    result = []
+    temporary_mappings = {'__tuple_dir': 'tuple'}
+    for i in detail_directories:
+        public_header = temporary_mappings.get(i, i.lstrip('_'))
+        result.append(f'{generate(f"@<{i}/.*>", public_header)},')
+
+    for i in detail_files:
+        public = []
+        if   i == '__assert': continue
+        elif i == '__availability': continue
+        elif i == '__bit_reference': continue
+        elif i == '__bits': public = ['bits']
+        elif i == '__bsd_locale_defaults.h': continue
+        elif i == '__bsd_locale_fallbacks.h': continue
+        elif i == '__config_site.in': continue
+        elif i == '__config': continue
+        elif i == '__debug': continue
+        elif i == '__errc': continue
+        elif i == '__hash_table': public = ['unordered_map', 'unordered_set']
+        elif i == '__locale': public = ['locale']
+        elif i == '__mbstate_t.h': continue
+        elif i == '__mutex_base': continue
+        elif i == '__node_handle': public = ['map', 'set', 'unordered_map', 'unordered_set']
+        elif i == '__split_buffer': public = ['deque', 'vector']
+        elif i == '__std_stream': public = ['iostream']
+        elif i == '__threading_support': public = ['atomic', 'mutex', 'semaphore', 'thread']
+        elif i == '__tree': public = ['map', 'set']
+        elif i == '__undef_macros': continue
+        elif i == '__verbose_abort': continue
+        else: panic()
+
+        for p in public:
+            result.append(f'{generate(f"<{i}>", p)},')
+
+    result.sort()
+    return result
+
+def main():
+    monorepo_root = pathlib.Path(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+    assert(monorepo_root.exists())
+    include = pathlib.Path(os.path.join(monorepo_root, 'libcxx', 'include'))
+
+    mapping = generate_map(include)
+    data = '[\n  ' + '\n  '.join(mapping) + '\n]\n'
+    with open(f'{include}/libcxx.imp', 'w') as f:
+        f.write(data)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/app/src/main/cpp/libcxx/utils/graph_header_deps.py b/app/src/main/cpp/libcxx/utils/graph_header_deps.py
new file mode 100644
index 0000000..bb5889f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/graph_header_deps.py
@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+# ===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+# ===----------------------------------------------------------------------===##
+
+import argparse
+import sys
+
+if __name__ == "__main__":
+    """Converts a header dependency CSV file to Graphviz dot file.
+
+    The header dependency CSV files are found on the directory
+    libcxx/test/libcxx/transitive_includes
+    """
+
+    parser = argparse.ArgumentParser(
+        description="""Converts a libc++ dependency CSV file to a Graphviz dot file.
+For example:
+  libcxx/utils/graph_header_deps.py libcxx/test/libcxx/transitive_includes/cxx20.csv | dot -Tsvg > graph.svg
+""",
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+    )
+    parser.add_argument(
+        "input",
+        default=None,
+        metavar="FILE",
+        help="The header dependency CSV file.",
+    )
+    options = parser.parse_args()
+
+    print(
+        """digraph includes {
+graph [nodesep=0.5, ranksep=1];
+node [shape=box, width=4];"""
+    )
+    with open(options.input, "r") as f:
+        for line in f.readlines():
+            elements = line.rstrip().split(" ")
+            assert len(elements) == 2
+
+            print(f'\t"{elements[0]}" -> "{elements[1]}"')
+
+    print("}")
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/__init__.py b/app/src/main/cpp/libcxx/utils/libcxx/__init__.py
new file mode 100644
index 0000000..d2e99ba
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/__init__.py
@@ -0,0 +1,16 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+"""libcxx python utilities"""
+
+__author__ = 'Eric Fiselier'
+__email__ = 'eric@efcs.ca'
+__versioninfo__ = (0, 1, 0)
+__version__ = ' '.join(str(v) for v in __versioninfo__) + 'dev'
+
+__all__ = []
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/sym_check/__init__.py b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/__init__.py
new file mode 100644
index 0000000..0766df2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/__init__.py
@@ -0,0 +1,16 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+"""libcxx abi symbol checker"""
+
+__author__ = 'Eric Fiselier'
+__email__ = 'eric@efcs.ca'
+__versioninfo__ = (0, 1, 0)
+__version__ = ' '.join(str(v) for v in __versioninfo__) + 'dev'
+
+__all__ = ['diff', 'extract', 'util']
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/sym_check/diff.py b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/diff.py
new file mode 100644
index 0000000..cba93fa
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/diff.py
@@ -0,0 +1,102 @@
+# -*- Python -*- vim: set syntax=python tabstop=4 expandtab cc=80:
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+"""
+diff - A set of functions for diff-ing two symbol lists.
+"""
+
+from libcxx.sym_check import util
+
+
+def _symbol_difference(lhs, rhs):
+    lhs_names = set(((n['name'], n['type']) for n in lhs))
+    rhs_names = set(((n['name'], n['type']) for n in rhs))
+    diff_names = lhs_names - rhs_names
+    return [n for n in lhs if (n['name'], n['type']) in diff_names]
+
+
+def _find_by_key(sym_list, k):
+    for sym in sym_list:
+        if sym['name'] == k:
+            return sym
+    return None
+
+
+def added_symbols(old, new):
+    return _symbol_difference(new, old)
+
+
+def removed_symbols(old, new):
+    return _symbol_difference(old, new)
+
+
+def changed_symbols(old, new):
+    changed = []
+    for old_sym in old:
+        if old_sym in new:
+            continue
+        new_sym = _find_by_key(new, old_sym['name'])
+        if (new_sym is not None and not new_sym in old
+                and old_sym != new_sym):
+            changed += [(old_sym, new_sym)]
+    return changed
+
+
+def diff(old, new):
+    added = added_symbols(old, new)
+    removed = removed_symbols(old, new)
+    changed = changed_symbols(old, new)
+    return added, removed, changed
+
+
+def report_diff(added_syms, removed_syms, changed_syms, names_only=False,
+                demangle=True):
+    def maybe_demangle(name):
+        return util.demangle_symbol(name) if demangle else name
+
+    report = ''
+    for sym in added_syms:
+        report += 'Symbol added: %s\n' % maybe_demangle(sym['name'])
+        if not names_only:
+            report += '    %s\n\n' % sym
+    if added_syms and names_only:
+        report += '\n'
+    for sym in removed_syms:
+        report += 'SYMBOL REMOVED: %s\n' % maybe_demangle(sym['name'])
+        if not names_only:
+            report += '    %s\n\n' % sym
+    if removed_syms and names_only:
+        report += '\n'
+    if not names_only:
+        for sym_pair in changed_syms:
+            old_sym, new_sym = sym_pair
+            old_str = '\n    OLD SYMBOL: %s' % old_sym
+            new_str = '\n    NEW SYMBOL: %s' % new_sym
+            report += ('SYMBOL CHANGED: %s%s%s\n\n' %
+                       (maybe_demangle(old_sym['name']),
+                        old_str, new_str))
+
+    added = bool(len(added_syms) != 0)
+    abi_break = bool(len(removed_syms))
+    if not names_only:
+        abi_break = abi_break or len(changed_syms)
+    if added or abi_break:
+        report += 'Summary\n'
+        report += '    Added:   %d\n' % len(added_syms)
+        report += '    Removed: %d\n' % len(removed_syms)
+        if not names_only:
+            report += '    Changed: %d\n' % len(changed_syms)
+        if not abi_break:
+            report += 'Symbols added.'
+        else:
+            report += 'ABI BREAKAGE: SYMBOLS ADDED OR REMOVED!'
+    else:
+        report += 'Symbols match.'
+    is_different = abi_break or bool(len(added_syms)) \
+                   or bool(len(changed_syms))
+    return report, abi_break, is_different
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/sym_check/extract.py b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/extract.py
new file mode 100644
index 0000000..c563720
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/extract.py
@@ -0,0 +1,300 @@
+# -*- Python -*- vim: set syntax=python tabstop=4 expandtab cc=80:
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+"""
+extract - A set of function that extract symbol lists from shared libraries.
+"""
+import distutils.spawn
+import os.path
+from os import environ
+import re
+import subprocess
+import sys
+
+from libcxx.sym_check import util
+
+extract_ignore_names = ['_init', '_fini']
+
+class NMExtractor(object):
+    """
+    NMExtractor - Extract symbol lists from libraries using nm.
+    """
+
+    @staticmethod
+    def find_tool():
+        """
+        Search for the nm executable and return the path.
+        """
+        return distutils.spawn.find_executable('nm')
+
+    def __init__(self, static_lib):
+        """
+        Initialize the nm executable and flags that will be used to extract
+        symbols from shared libraries.
+        """
+        self.nm_exe = self.find_tool()
+        if self.nm_exe is None:
+            # ERROR no NM found
+            print("ERROR: Could not find nm")
+            sys.exit(1)
+        self.static_lib = static_lib
+        self.flags = ['-P', '-g']
+        if sys.platform.startswith('aix'):
+            # AIX nm demangles symbols by default, so suppress that.
+            self.flags.append('-C')
+
+
+    def extract(self, lib):
+        """
+        Extract symbols from a library and return the results as a dict of
+        parsed symbols.
+        """
+        cmd = [self.nm_exe] + self.flags + [lib]
+        out = subprocess.check_output(cmd).decode()
+        fmt_syms = (self._extract_sym(l)
+                    for l in out.splitlines() if l.strip())
+        # Cast symbol to string.
+        final_syms = (repr(s) for s in fmt_syms if self._want_sym(s))
+        # Make unique and sort strings.
+        tmp_list = list(sorted(set(final_syms)))
+        # Cast string back to symbol.
+        return util.read_syms_from_list(tmp_list)
+
+    def _extract_sym(self, sym_str):
+        bits = sym_str.split()
+        # Everything we want has at least two columns.
+        if len(bits) < 2:
+            return None
+        new_sym = {
+            'name': bits[0],
+            'type': bits[1],
+            'is_defined': (bits[1].lower() != 'u')
+        }
+        new_sym['name'] = new_sym['name'].replace('@@', '@')
+        new_sym = self._transform_sym_type(new_sym)
+        # NM types which we want to save the size for.
+        if new_sym['type'] == 'OBJECT' and len(bits) > 3:
+            new_sym['size'] = int(bits[3], 16)
+        return new_sym
+
+    @staticmethod
+    def _want_sym(sym):
+        """
+        Check that s is a valid symbol that we want to keep.
+        """
+        if sym is None or len(sym) < 2:
+            return False
+        if sym['name'] in extract_ignore_names:
+            return False
+        bad_types = ['t', 'b', 'r', 'd', 'w']
+        return (sym['type'] not in bad_types
+                and sym['name'] not in ['__bss_start', '_end', '_edata'])
+
+    @staticmethod
+    def _transform_sym_type(sym):
+        """
+        Map the nm single letter output for type to either FUNC or OBJECT.
+        If the type is not recognized it is left unchanged.
+        """
+        func_types = ['T', 'W']
+        obj_types = ['B', 'D', 'R', 'V', 'S']
+        if sym['type'] in func_types:
+            sym['type'] = 'FUNC'
+        elif sym['type'] in obj_types:
+            sym['type'] = 'OBJECT'
+        return sym
+
+class ReadElfExtractor(object):
+    """
+    ReadElfExtractor - Extract symbol lists from libraries using readelf.
+    """
+
+    @staticmethod
+    def find_tool():
+        """
+        Search for the readelf executable and return the path.
+        """
+        return distutils.spawn.find_executable('readelf')
+
+    def __init__(self, static_lib):
+        """
+        Initialize the readelf executable and flags that will be used to
+        extract symbols from shared libraries.
+        """
+        self.tool = self.find_tool()
+        if self.tool is None:
+            # ERROR no NM found
+            print("ERROR: Could not find readelf")
+            sys.exit(1)
+        # TODO: Support readelf for reading symbols from archives
+        assert not static_lib and "RealElf does not yet support static libs"
+        self.flags = ['--wide', '--symbols']
+
+    def extract(self, lib):
+        """
+        Extract symbols from a library and return the results as a dict of
+        parsed symbols.
+        """
+        cmd = [self.tool] + self.flags + [lib]
+        out = subprocess.check_output(cmd).decode()
+        dyn_syms = self.get_dynsym_table(out)
+        return self.process_syms(dyn_syms)
+
+    def process_syms(self, sym_list):
+        new_syms = []
+        for s in sym_list:
+            parts = s.split()
+            if not parts:
+                continue
+            assert len(parts) == 7 or len(parts) == 8 or len(parts) == 9
+            if len(parts) == 7:
+                continue
+            new_sym = {
+                'name': parts[7],
+                'size': int(parts[2]),
+                'type': parts[3],
+                'is_defined': (parts[6] != 'UND')
+            }
+            assert new_sym['type'] in ['OBJECT', 'FUNC', 'NOTYPE', 'TLS']
+            if new_sym['name'] in extract_ignore_names:
+                continue
+            if new_sym['type'] == 'NOTYPE':
+                continue
+            if new_sym['type'] == 'FUNC':
+                del new_sym['size']
+            new_syms += [new_sym]
+        return new_syms
+
+    def get_dynsym_table(self, out):
+        lines = out.splitlines()
+        start = -1
+        end = -1
+        for i in range(len(lines)):
+            # Accept both GNU and ELF Tool Chain readelf format.  Some versions
+            # of ELF Tool Chain readelf use ( ) around the symbol table name
+            # instead of ' ', and omit the blank line before the heading.
+            if re.match(r"Symbol table ['(].dynsym[')]", lines[i]):
+                start = i + 2
+            elif start != -1 and end == -1:
+                if not lines[i].strip():
+                    end = i + 1
+                if lines[i].startswith("Symbol table ("):
+                    end = i
+        assert start != -1
+        if end == -1:
+            end = len(lines)
+        return lines[start:end]
+
+class AIXDumpExtractor(object):
+     """
+     AIXDumpExtractor - Extract symbol lists from libraries using AIX dump.
+     """
+
+     @staticmethod
+     def find_tool():
+         """
+         Search for the dump executable and return the path.
+         """
+         return distutils.spawn.find_executable('dump')
+
+     def __init__(self, static_lib):
+         """
+         Initialize the dump executable and flags that will be used to
+         extract symbols from shared libraries.
+         """
+         # TODO: Support dump for reading symbols from static libraries
+         assert not static_lib and "static libs not yet supported with dump"
+         self.tool = self.find_tool()
+         if self.tool is None:
+             print("ERROR: Could not find dump")
+             sys.exit(1)
+         self.flags = ['-n', '-v']
+         object_mode = environ.get('OBJECT_MODE')
+         if object_mode == '32':
+             self.flags += ['-X32']
+         elif object_mode == '64':
+             self.flags += ['-X64']
+         else:
+             self.flags += ['-X32_64']
+
+     def extract(self, lib):
+         """
+         Extract symbols from a library and return the results as a dict of
+         parsed symbols.
+         """
+         cmd = [self.tool] + self.flags + [lib]
+         out = subprocess.check_output(cmd).decode()
+         loader_syms = self.get_loader_symbol_table(out)
+         return self.process_syms(loader_syms)
+
+     def process_syms(self, sym_list):
+         new_syms = []
+         for s in sym_list:
+             parts = s.split()
+             if not parts:
+                 continue
+             assert len(parts) == 8 or len(parts) == 7
+             if len(parts) == 7:
+                 continue
+             new_sym = {
+                 'name': parts[7],
+                 'type': 'FUNC' if parts[4] == 'DS' else 'OBJECT',
+                 'is_defined': (parts[5] != 'EXTref'),
+                 'storage_mapping_class': parts[4],
+                 'import_export': parts[3]
+             }
+             if new_sym['name'] in extract_ignore_names:
+                 continue
+             new_syms += [new_sym]
+         return new_syms
+
+     def get_loader_symbol_table(self, out):
+         lines = out.splitlines()
+         return filter(lambda n: re.match(r'^\[[0-9]+\]', n), lines)
+
+     @staticmethod
+     def is_shared_lib(lib):
+         """
+         Check for the shared object flag in XCOFF headers of the input file or
+         library archive.
+         """
+         dump = AIXDumpExtractor.find_tool()
+         if dump is None:
+             print("ERROR: Could not find dump")
+             sys.exit(1)
+         cmd = [dump, '-X32_64', '-ov', lib]
+         out = subprocess.check_output(cmd).decode()
+         return out.find("SHROBJ") != -1
+
+
+def is_static_library(lib_file):
+     """
+     Determine if a given library is static or shared.
+     """
+     if sys.platform.startswith('aix'):
+         # An AIX library could be both, but for simplicity assume it isn't.
+         return not AIXDumpExtractor.is_shared_lib(lib_file)
+     else:
+         _, ext = os.path.splitext(lib_file)
+         return ext == '.a'
+
+def extract_symbols(lib_file, static_lib=None):
+    """
+    Extract and return a list of symbols extracted from a static or dynamic
+    library. The symbols are extracted using dump, nm or readelf. They are
+    then filtered and formated. Finally the symbols are made unique.
+    """
+    if static_lib is None:
+        static_lib = is_static_library(lib_file)
+    if sys.platform.startswith('aix'):
+        extractor = AIXDumpExtractor(static_lib=static_lib)
+    elif ReadElfExtractor.find_tool() and not static_lib:
+        extractor = ReadElfExtractor(static_lib=static_lib)
+    else:
+        extractor = NMExtractor(static_lib=static_lib)
+    return extractor.extract(lib_file)
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/sym_check/match.py b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/match.py
new file mode 100644
index 0000000..636e3ab
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/match.py
@@ -0,0 +1,39 @@
+# -*- Python -*- vim: set syntax=python tabstop=4 expandtab cc=80:
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+"""
+match - A set of functions for matching symbols in a list to a list of regexs
+"""
+
+import re
+
+
+def find_and_report_matching(symbol_list, regex_list):
+    report = ''
+    found_count = 0
+    for regex_str in regex_list:
+        report += 'Matching regex "%s":\n' % regex_str
+        matching_list = find_matching_symbols(symbol_list, regex_str)
+        if not matching_list:
+            report += '    No matches found\n\n'
+            continue
+        # else
+        found_count += len(matching_list)
+        for m in matching_list:
+            report += '    MATCHES: %s\n' % m['name']
+        report += '\n'
+    return found_count, report
+
+
+def find_matching_symbols(symbol_list, regex_str):
+    regex = re.compile(regex_str)
+    matching_list = []
+    for s in symbol_list:
+        if regex.match(s['name']):
+            matching_list += [s]
+    return matching_list
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/sym_check/util.py b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/util.py
new file mode 100644
index 0000000..7d9fd39
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/sym_check/util.py
@@ -0,0 +1,279 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+from pprint import pformat
+import ast
+import distutils.spawn
+import re
+import subprocess
+import sys
+
+
+def read_syms_from_list(slist):
+    """
+    Read a list of symbols from a list of strings.
+    Each string is one symbol.
+    """
+    return [ast.literal_eval(l) for l in slist]
+
+
+def read_syms_from_file(filename):
+    """
+    Read a list of symbols in from a file.
+    """
+    with open(filename, 'r') as f:
+        data = f.read()
+    return read_syms_from_list(data.splitlines())
+
+
+def read_exclusions(filename):
+    with open(filename, 'r') as f:
+        data = f.read()
+    lines = [l.strip() for l in data.splitlines() if l.strip()]
+    lines = [l for l in lines if not l.startswith('#')]
+    return lines
+
+
+def write_syms(sym_list, out=None, names_only=False, filter=None):
+    """
+    Write a list of symbols to the file named by out.
+    """
+    out_str = ''
+    out_list = sym_list
+    out_list.sort(key=lambda x: x['name'])
+    if filter is not None:
+        out_list = filter(out_list)
+    if names_only:
+        out_list = [sym['name'] for sym in out_list]
+    for sym in out_list:
+        # Use pformat for consistent ordering of keys.
+        out_str += pformat(sym, width=100000) + '\n'
+    if out is None:
+        sys.stdout.write(out_str)
+    else:
+        with open(out, 'w') as f:
+            f.write(out_str)
+
+
+_cppfilt_exe = distutils.spawn.find_executable('c++filt')
+
+
+def demangle_symbol(symbol):
+    if _cppfilt_exe is None:
+        return symbol
+    result = subprocess.run([_cppfilt_exe], input=symbol.encode(), capture_output=True)
+    if result.returncode != 0:
+        return symbol
+    return result.stdout.decode()
+
+
+def is_elf(filename):
+    with open(filename, 'rb') as f:
+        magic_bytes = f.read(4)
+    return magic_bytes == b'\x7fELF'
+
+
+def is_mach_o(filename):
+    with open(filename, 'rb') as f:
+        magic_bytes = f.read(4)
+    return magic_bytes in [
+        b'\xfe\xed\xfa\xce',  # MH_MAGIC
+        b'\xce\xfa\xed\xfe',  # MH_CIGAM
+        b'\xfe\xed\xfa\xcf',  # MH_MAGIC_64
+        b'\xcf\xfa\xed\xfe',  # MH_CIGAM_64
+        b'\xca\xfe\xba\xbe',  # FAT_MAGIC
+        b'\xbe\xba\xfe\xca'   # FAT_CIGAM
+    ]
+
+def is_xcoff_or_big_ar(filename):
+    with open(filename, 'rb') as f:
+        magic_bytes = f.read(7)
+    return magic_bytes[:4] in [
+        b'\x01DF',  # XCOFF32
+        b'\x01F7'   # XCOFF64
+    ] or magic_bytes == b'<bigaf>'
+
+def is_library_file(filename):
+    if sys.platform == 'darwin':
+        return is_mach_o(filename)
+    elif sys.platform.startswith('aix'):
+        return is_xcoff_or_big_ar(filename)
+    else:
+        return is_elf(filename)
+
+
+def extract_or_load(filename):
+    import libcxx.sym_check.extract
+    if is_library_file(filename):
+        return libcxx.sym_check.extract.extract_symbols(filename)
+    return read_syms_from_file(filename)
+
+def adjust_mangled_name(name):
+    if not name.startswith('__Z'):
+        return name
+    return name[1:]
+
+new_delete_std_symbols = [
+    '_Znam',
+    '_Znwm',
+    '_ZdaPv',
+    '_ZdaPvm',
+    '_ZdlPv',
+    '_ZdlPvm'
+]
+
+cxxabi_symbols = [
+    '___dynamic_cast',
+    '___gxx_personality_v0',
+    '_ZTIDi',
+    '_ZTIDn',
+    '_ZTIDs',
+    '_ZTIPDi',
+    '_ZTIPDn',
+    '_ZTIPDs',
+    '_ZTIPKDi',
+    '_ZTIPKDn',
+    '_ZTIPKDs',
+    '_ZTIPKa',
+    '_ZTIPKb',
+    '_ZTIPKc',
+    '_ZTIPKd',
+    '_ZTIPKe',
+    '_ZTIPKf',
+    '_ZTIPKh',
+    '_ZTIPKi',
+    '_ZTIPKj',
+    '_ZTIPKl',
+    '_ZTIPKm',
+    '_ZTIPKs',
+    '_ZTIPKt',
+    '_ZTIPKv',
+    '_ZTIPKw',
+    '_ZTIPKx',
+    '_ZTIPKy',
+    '_ZTIPa',
+    '_ZTIPb',
+    '_ZTIPc',
+    '_ZTIPd',
+    '_ZTIPe',
+    '_ZTIPf',
+    '_ZTIPh',
+    '_ZTIPi',
+    '_ZTIPj',
+    '_ZTIPl',
+    '_ZTIPm',
+    '_ZTIPs',
+    '_ZTIPt',
+    '_ZTIPv',
+    '_ZTIPw',
+    '_ZTIPx',
+    '_ZTIPy',
+    '_ZTIa',
+    '_ZTIb',
+    '_ZTIc',
+    '_ZTId',
+    '_ZTIe',
+    '_ZTIf',
+    '_ZTIh',
+    '_ZTIi',
+    '_ZTIj',
+    '_ZTIl',
+    '_ZTIm',
+    '_ZTIs',
+    '_ZTIt',
+    '_ZTIv',
+    '_ZTIw',
+    '_ZTIx',
+    '_ZTIy',
+    '_ZTSDi',
+    '_ZTSDn',
+    '_ZTSDs',
+    '_ZTSPDi',
+    '_ZTSPDn',
+    '_ZTSPDs',
+    '_ZTSPKDi',
+    '_ZTSPKDn',
+    '_ZTSPKDs',
+    '_ZTSPKa',
+    '_ZTSPKb',
+    '_ZTSPKc',
+    '_ZTSPKd',
+    '_ZTSPKe',
+    '_ZTSPKf',
+    '_ZTSPKh',
+    '_ZTSPKi',
+    '_ZTSPKj',
+    '_ZTSPKl',
+    '_ZTSPKm',
+    '_ZTSPKs',
+    '_ZTSPKt',
+    '_ZTSPKv',
+    '_ZTSPKw',
+    '_ZTSPKx',
+    '_ZTSPKy',
+    '_ZTSPa',
+    '_ZTSPb',
+    '_ZTSPc',
+    '_ZTSPd',
+    '_ZTSPe',
+    '_ZTSPf',
+    '_ZTSPh',
+    '_ZTSPi',
+    '_ZTSPj',
+    '_ZTSPl',
+    '_ZTSPm',
+    '_ZTSPs',
+    '_ZTSPt',
+    '_ZTSPv',
+    '_ZTSPw',
+    '_ZTSPx',
+    '_ZTSPy',
+    '_ZTSa',
+    '_ZTSb',
+    '_ZTSc',
+    '_ZTSd',
+    '_ZTSe',
+    '_ZTSf',
+    '_ZTSh',
+    '_ZTSi',
+    '_ZTSj',
+    '_ZTSl',
+    '_ZTSm',
+    '_ZTSs',
+    '_ZTSt',
+    '_ZTSv',
+    '_ZTSw',
+    '_ZTSx',
+    '_ZTSy'
+]
+
+def is_stdlib_symbol_name(name, sym):
+    name = adjust_mangled_name(name)
+    if re.search("@GLIBC|@GCC", name):
+        # Only when symbol is defined do we consider it ours
+        return sym['is_defined']
+    if re.search('(St[0-9])|(__cxa)|(__cxxabi)', name):
+        return True
+    if name in new_delete_std_symbols:
+        return True
+    if name in cxxabi_symbols:
+        return True
+    if name.startswith('_Z'):
+        return True
+    return False
+
+def filter_stdlib_symbols(syms):
+    stdlib_symbols = []
+    other_symbols = []
+    for s in syms:
+        canon_name = adjust_mangled_name(s['name'])
+        if not is_stdlib_symbol_name(canon_name, s):
+            other_symbols += [s]
+        else:
+            stdlib_symbols += [s]
+    return stdlib_symbols, other_symbols
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/__init__.py b/app/src/main/cpp/libcxx/utils/libcxx/test/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/dsl.py b/app/src/main/cpp/libcxx/utils/libcxx/test/dsl.py
new file mode 100644
index 0000000..834c775
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/test/dsl.py
@@ -0,0 +1,725 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+import os
+import pickle
+import pipes
+import platform
+import re
+import shutil
+import tempfile
+
+import libcxx.test.format
+import lit
+import lit.LitConfig
+import lit.Test
+import lit.TestRunner
+import lit.util
+
+class ConfigurationError(Exception):
+  pass
+
+class ConfigurationCompilationError(ConfigurationError):
+  pass
+
+class ConfigurationRuntimeError(ConfigurationError):
+  pass
+
+def _memoizeExpensiveOperation(extractCacheKey):
+  """
+  Allows memoizing a very expensive operation.
+
+  We pickle the cache key to make sure we store an immutable representation
+  of it. If we stored an object and the object was referenced elsewhere, it
+  could be changed from under our feet, which would break the cache.
+
+  We also store the cache for a given function persistently across invocations
+  of Lit. This dramatically speeds up the configuration of the test suite when
+  invoking Lit repeatedly, which is important for developer workflow. However,
+  with the current implementation that does not synchronize updates to the
+  persistent cache, this also means that one should not call a memoized
+  operation from multiple threads. This should normally not be a problem
+  since Lit configuration is single-threaded.
+  """
+  def decorator(function):
+    def f(config, *args, **kwargs):
+      cacheRoot = os.path.join(config.test_exec_root, '__config_cache__')
+      persistentCache = os.path.join(cacheRoot, function.__name__)
+      if not os.path.exists(cacheRoot):
+        os.makedirs(cacheRoot)
+
+      cache = {}
+      # Load a cache from a previous Lit invocation if there is one.
+      if os.path.exists(persistentCache):
+        with open(persistentCache, 'rb') as cacheFile:
+          cache = pickle.load(cacheFile)
+
+      cacheKey = pickle.dumps(extractCacheKey(config, *args, **kwargs))
+      if cacheKey not in cache:
+        cache[cacheKey] = function(config, *args, **kwargs)
+        # Update the persistent cache so it knows about the new key
+        with open(persistentCache, 'wb') as cacheFile:
+          pickle.dump(cache, cacheFile)
+      return cache[cacheKey]
+    return f
+  return decorator
+
+def _executeScriptInternal(test, commands):
+  """
+  Returns (stdout, stderr, exitCode, timeoutInfo)
+
+  TODO: This really should be easier to access from Lit itself
+  """
+  parsedCommands = libcxx.test.format.parseScript(test, preamble=commands)
+
+  litConfig = lit.LitConfig.LitConfig(
+    progname='lit',
+    path=[],
+    quiet=False,
+    useValgrind=False,
+    valgrindLeakCheck=False,
+    valgrindArgs=[],
+    noExecute=False,
+    debug=False,
+    isWindows=platform.system() == 'Windows',
+    order='smart',
+    params={})
+  _, tmpBase = libcxx.test.format._getTempPaths(test)
+  execDir = os.path.dirname(test.getExecPath())
+  res = lit.TestRunner.executeScriptInternal(test, litConfig, tmpBase, parsedCommands, execDir)
+  if isinstance(res, lit.Test.Result): # Handle failure to parse the Lit test
+    res = ('', res.output, 127, None)
+  (out, err, exitCode, timeoutInfo) = res
+
+  # TODO: As a temporary workaround until https://reviews.llvm.org/D81892 lands, manually
+  #       split any stderr output that is included in stdout. It shouldn't be there, but
+  #       the Lit internal shell conflates stderr and stdout.
+  conflatedErrorOutput = re.search("(# command stderr:.+$)", out, flags=re.DOTALL)
+  if conflatedErrorOutput:
+    conflatedErrorOutput = conflatedErrorOutput.group(0)
+    out = out[:-len(conflatedErrorOutput)]
+    err += conflatedErrorOutput
+
+  return (out, err, exitCode, timeoutInfo)
+
+def _makeConfigTest(config):
+  # Make sure the support directories exist, which is needed to create
+  # the temporary file %t below.
+  sourceRoot = os.path.join(config.test_exec_root, '__config_src__')
+  execRoot = os.path.join(config.test_exec_root, '__config_exec__')
+  for supportDir in (sourceRoot, execRoot):
+    if not os.path.exists(supportDir):
+      os.makedirs(supportDir)
+
+  # Create a dummy test suite and single dummy test inside it. As part of
+  # the Lit configuration, automatically do the equivalent of 'mkdir %T'
+  # and 'rm -r %T' to avoid cluttering the build directory.
+  suite = lit.Test.TestSuite('__config__', sourceRoot, execRoot, config)
+  tmp = tempfile.NamedTemporaryFile(dir=sourceRoot, delete=False, suffix='.cpp')
+  tmp.close()
+  pathInSuite = [os.path.relpath(tmp.name, sourceRoot)]
+  class TestWrapper(lit.Test.Test):
+    def __enter__(self):
+      testDir, _ = libcxx.test.format._getTempPaths(self)
+      os.makedirs(testDir)
+      return self
+    def __exit__(self, *args):
+      testDir, _ = libcxx.test.format._getTempPaths(self)
+      shutil.rmtree(testDir)
+      os.remove(tmp.name)
+  return TestWrapper(suite, pathInSuite, config)
+
+@_memoizeExpensiveOperation(lambda c, s, f=[]: (c.substitutions, c.environment, s, f))
+def sourceBuilds(config, source, additionalFlags=[]):
+  """
+  Return whether the program in the given string builds successfully.
+
+  This is done by compiling and linking a program that consists of the given
+  source with the %{cxx} substitution, and seeing whether that succeeds. If
+  any additional flags are passed, they are appended to the compiler invocation.
+  """
+  with _makeConfigTest(config) as test:
+    with open(test.getSourcePath(), 'w') as sourceFile:
+      sourceFile.write(source)
+    _, _, exitCode, _ = _executeScriptInternal(test, ['%{{build}} {}'.format(' '.join(additionalFlags))])
+    return exitCode == 0
+
+@_memoizeExpensiveOperation(lambda c, p, args=None: (c.substitutions, c.environment, p, args))
+def programOutput(config, program, args=None):
+  """
+  Compiles a program for the test target, run it on the test target and return
+  the output.
+
+  Note that execution of the program is done through the %{exec} substitution,
+  which means that the program may be run on a remote host depending on what
+  %{exec} does.
+  """
+  if args is None:
+    args = []
+  with _makeConfigTest(config) as test:
+    with open(test.getSourcePath(), 'w') as source:
+      source.write(program)
+    _, err, exitCode, _ = _executeScriptInternal(test, ['%{build}'])
+    if exitCode != 0:
+      raise ConfigurationCompilationError("Failed to build program, stderr is:\n{}".format(err))
+
+    out, err, exitCode, _ = _executeScriptInternal(test, ["%{{run}} {}".format(' '.join(args))])
+    if exitCode != 0:
+      raise ConfigurationRuntimeError("Failed to run program, stderr is:\n{}".format(err))
+
+    actualOut = re.search("# command output:\n(.+)\n$", out, flags=re.DOTALL)
+    actualOut = actualOut.group(1) if actualOut else ""
+    return actualOut
+
+@_memoizeExpensiveOperation(lambda c, p, args=None: (c.substitutions, c.environment, p, args))
+def programSucceeds(config, program, args=None):
+  """
+  Compiles a program for the test target, run it on the test target and return
+  whether it completed successfully.
+
+  Note that execution of the program is done through the %{exec} substitution,
+  which means that the program may be run on a remote host depending on what
+  %{exec} does.
+  """
+  try:
+    programOutput(config, program, args)
+  except ConfigurationRuntimeError:
+    return False
+  return True
+
+@_memoizeExpensiveOperation(lambda c, f: (c.substitutions, c.environment, f))
+def hasCompileFlag(config, flag):
+  """
+  Return whether the compiler in the configuration supports a given compiler flag.
+
+  This is done by executing the %{cxx} substitution with the given flag and
+  checking whether that succeeds.
+  """
+  with _makeConfigTest(config) as test:
+    out, err, exitCode, timeoutInfo = _executeScriptInternal(test, [
+      "%{{cxx}} -xc++ {} -Werror -fsyntax-only %{{flags}} %{{compile_flags}} {}".format(os.devnull, flag)
+    ])
+    return exitCode == 0
+
+@_memoizeExpensiveOperation(lambda c, s: (c.substitutions, c.environment, s))
+def runScriptExitCode(config, script):
+  """
+  Runs the given script as a Lit test, and returns the exit code of the execution.
+
+  The script must be a list of commands, each of which being something that
+  could appear on the right-hand-side of a `RUN:` keyword.
+  """
+  with _makeConfigTest(config) as test:
+    _, _, exitCode, _ = _executeScriptInternal(test, script)
+    return exitCode
+
+@_memoizeExpensiveOperation(lambda c, s: (c.substitutions, c.environment, s))
+def commandOutput(config, command):
+  """
+  Runs the given script as a Lit test, and returns the output.
+  If the exit code isn't 0 an exception is raised.
+
+  The script must be a list of commands, each of which being something that
+  could appear on the right-hand-side of a `RUN:` keyword.
+  """
+  with _makeConfigTest(config) as test:
+    out, _, exitCode, _ = _executeScriptInternal(test, command)
+    if exitCode != 0:
+     raise ConfigurationRuntimeError()
+    return out
+
+@_memoizeExpensiveOperation(lambda c, l: (c.substitutions, c.environment, l))
+def hasAnyLocale(config, locales):
+  """
+  Return whether the runtime execution environment supports a given locale.
+  Different systems may use different names for a locale, so this function checks
+  whether any of the passed locale names is supported by setlocale() and returns
+  true if one of them works.
+
+  This is done by executing a program that tries to set the given locale using
+  %{exec} -- this means that the command may be executed on a remote host
+  depending on the %{exec} substitution.
+  """
+  # Bionic's locale support is simplistic: it only recognizes two locales, "C"
+  # (aka "POSIX") and "C.UTF-8" (aka "en_US.UTF-8"). The locale mode determines
+  # the MB_CUR_MAX, but there is no true locale stuff (e.g. number formatting).
+  # Treat Bionic as if it lacks locales.
+  program = """
+    #include <stddef.h>
+    #include <stdlib.h>
+    #if defined(_LIBCPP_HAS_NO_LOCALIZATION) || defined(__BIONIC__)
+      int main(int, char**) { return 1; }
+    #else
+      #include <locale.h>
+      int main(int argc, char** argv) {
+        for (int i = 1; i < argc; i++) {
+          if (::setlocale(LC_ALL, argv[i]) != NULL) {
+            return 0;
+          }
+        }
+        return 1;
+      }
+    #endif
+  """
+  return programSucceeds(config, program, args=[pipes.quote(l) for l in locales])
+
+@_memoizeExpensiveOperation(lambda c, flags='': (c.substitutions, c.environment, flags))
+def compilerMacros(config, flags=''):
+  """
+  Return a dictionary of predefined compiler macros.
+
+  The keys are strings representing macros, and the values are strings
+  representing what each macro is defined to.
+
+  If the optional `flags` argument (a string) is provided, these flags will
+  be added to the compiler invocation when generating the macros.
+  """
+  with _makeConfigTest(config) as test:
+    with open(test.getSourcePath(), 'w') as sourceFile:
+      sourceFile.write("""
+      #if __has_include(<__config_site>)
+      #  include <__config_site>
+      #endif
+      """)
+    unparsedOutput, err, exitCode, _ = _executeScriptInternal(test, [
+      "%{{cxx}} %s -dM -E %{{flags}} %{{compile_flags}} {}".format(flags)
+    ])
+    if exitCode != 0:
+      raise ConfigurationCompilationError("Failed to retrieve compiler macros, stderr is:\n{}".format(err))
+    parsedMacros = dict()
+    defines = (l.strip() for l in unparsedOutput.split('\n') if l.startswith('#define '))
+    for line in defines:
+      line = line[len('#define '):]
+      macro, _, value = line.partition(' ')
+      parsedMacros[macro] = value
+    return parsedMacros
+
+def featureTestMacros(config, flags=''):
+  """
+  Return a dictionary of feature test macros.
+
+  The keys are strings representing feature test macros, and the values are
+  integers representing the value of the macro.
+  """
+  allMacros = compilerMacros(config, flags)
+  return {m: int(v.rstrip('LlUu')) for (m, v) in allMacros.items() if m.startswith('__cpp_')}
+
+def _appendToSubstitution(substitutions, key, value):
+  return [(k, v + ' ' + value) if k == key else (k, v) for (k, v) in substitutions]
+
+def _prependToSubstitution(substitutions, key, value):
+  return [(k, value + ' ' + v) if k == key else (k, v) for (k, v) in substitutions]
+
+
+class ConfigAction(object):
+  """
+  This class represents an action that can be performed on a Lit TestingConfig
+  object.
+
+  Examples of such actions are adding or modifying substitutions, Lit features,
+  etc. This class only provides the interface of such actions, and it is meant
+  to be subclassed appropriately to create new actions.
+  """
+  def applyTo(self, config):
+    """
+    Applies the action to the given configuration.
+
+    This should modify the configuration object in place, and return nothing.
+
+    If applying the action to the configuration would yield an invalid
+    configuration, and it is possible to diagnose it here, this method
+    should produce an error. For example, it should be an error to modify
+    a substitution in a way that we know for sure is invalid (e.g. adding
+    a compiler flag when we know the compiler doesn't support it). Failure
+    to do so early may lead to difficult-to-diagnose issues down the road.
+    """
+    pass
+
+  def pretty(self, config, litParams):
+    """
+    Returns a short and human-readable string describing what this action does.
+
+    This is used for logging purposes when running the test suite, so it should
+    be kept concise.
+    """
+    pass
+
+
+class AddFeature(ConfigAction):
+  """
+  This action defines the given Lit feature when running the test suite.
+
+  The name of the feature can be a string or a callable, in which case it is
+  called with the configuration to produce the feature name (as a string).
+  """
+  def __init__(self, name):
+    self._name = name
+
+  def _getName(self, config):
+    name = self._name(config) if callable(self._name) else self._name
+    if not isinstance(name, str):
+      raise ValueError("Lit feature did not resolve to a string (got {})".format(name))
+    return name
+
+  def applyTo(self, config):
+    config.available_features.add(self._getName(config))
+
+  def pretty(self, config, litParams):
+    return 'add Lit feature {}'.format(self._getName(config))
+
+
+class AddFlag(ConfigAction):
+  """
+  This action adds the given flag to the %{flags} substitution.
+
+  The flag can be a string or a callable, in which case it is called with the
+  configuration to produce the actual flag (as a string).
+  """
+  def __init__(self, flag):
+    self._getFlag = lambda config: flag(config) if callable(flag) else flag
+
+  def applyTo(self, config):
+    flag = self._getFlag(config)
+    assert hasCompileFlag(config, flag), "Trying to enable flag {}, which is not supported".format(flag)
+    config.substitutions = _appendToSubstitution(config.substitutions, '%{flags}', flag)
+
+  def pretty(self, config, litParams):
+    return 'add {} to %{{flags}}'.format(self._getFlag(config))
+
+
+class AddFlagIfSupported(ConfigAction):
+  """
+  This action adds the given flag to the %{flags} substitution, only if
+  the compiler supports the flag.
+
+  The flag can be a string or a callable, in which case it is called with the
+  configuration to produce the actual flag (as a string).
+  """
+  def __init__(self, flag):
+    self._getFlag = lambda config: flag(config) if callable(flag) else flag
+
+  def applyTo(self, config):
+    flag = self._getFlag(config)
+    if hasCompileFlag(config, flag):
+      config.substitutions = _appendToSubstitution(config.substitutions, '%{flags}', flag)
+
+  def pretty(self, config, litParams):
+    return 'add {} to %{{flags}}'.format(self._getFlag(config))
+
+
+class AddCompileFlag(ConfigAction):
+  """
+  This action adds the given flag to the %{compile_flags} substitution.
+
+  The flag can be a string or a callable, in which case it is called with the
+  configuration to produce the actual flag (as a string).
+  """
+  def __init__(self, flag):
+    self._getFlag = lambda config: flag(config) if callable(flag) else flag
+
+  def applyTo(self, config):
+    flag = self._getFlag(config)
+    assert hasCompileFlag(config, flag), "Trying to enable compile flag {}, which is not supported".format(flag)
+    config.substitutions = _appendToSubstitution(config.substitutions, '%{compile_flags}', flag)
+
+  def pretty(self, config, litParams):
+    return 'add {} to %{{compile_flags}}'.format(self._getFlag(config))
+
+
+class AddLinkFlag(ConfigAction):
+  """
+  This action appends the given flag to the %{link_flags} substitution.
+
+  The flag can be a string or a callable, in which case it is called with the
+  configuration to produce the actual flag (as a string).
+  """
+  def __init__(self, flag):
+    self._getFlag = lambda config: flag(config) if callable(flag) else flag
+
+  def applyTo(self, config):
+    flag = self._getFlag(config)
+    assert hasCompileFlag(config, flag), "Trying to enable link flag {}, which is not supported".format(flag)
+    config.substitutions = _appendToSubstitution(config.substitutions, '%{link_flags}', flag)
+
+  def pretty(self, config, litParams):
+    return 'append {} to %{{link_flags}}'.format(self._getFlag(config))
+
+
+class PrependLinkFlag(ConfigAction):
+  """
+  This action prepends the given flag to the %{link_flags} substitution.
+
+  The flag can be a string or a callable, in which case it is called with the
+  configuration to produce the actual flag (as a string).
+  """
+  def __init__(self, flag):
+    self._getFlag = lambda config: flag(config) if callable(flag) else flag
+
+  def applyTo(self, config):
+    flag = self._getFlag(config)
+    assert hasCompileFlag(config, flag), "Trying to enable link flag {}, which is not supported".format(flag)
+    config.substitutions = _prependToSubstitution(config.substitutions, '%{link_flags}', flag)
+
+  def pretty(self, config, litParams):
+    return 'prepend {} to %{{link_flags}}'.format(self._getFlag(config))
+
+
+class AddOptionalWarningFlag(ConfigAction):
+  """
+  This action adds the given warning flag to the %{compile_flags} substitution,
+  if it is supported by the compiler.
+
+  The flag can be a string or a callable, in which case it is called with the
+  configuration to produce the actual flag (as a string).
+  """
+  def __init__(self, flag):
+    self._getFlag = lambda config: flag(config) if callable(flag) else flag
+
+  def applyTo(self, config):
+    flag = self._getFlag(config)
+    # Use -Werror to make sure we see an error about the flag being unsupported.
+    if hasCompileFlag(config, '-Werror ' + flag):
+      config.substitutions = _appendToSubstitution(config.substitutions, '%{compile_flags}', flag)
+
+  def pretty(self, config, litParams):
+    return 'add {} to %{{compile_flags}}'.format(self._getFlag(config))
+
+
+class AddSubstitution(ConfigAction):
+  """
+  This action adds the given substitution to the Lit configuration.
+
+  The substitution can be a string or a callable, in which case it is called
+  with the configuration to produce the actual substitution (as a string).
+  """
+  def __init__(self, key, substitution):
+    self._key = key
+    self._getSub = lambda config: substitution(config) if callable(substitution) else substitution
+
+  def applyTo(self, config):
+    key = self._key
+    sub = self._getSub(config)
+    config.substitutions.append((key, sub))
+
+  def pretty(self, config, litParams):
+    return 'add substitution {} = {}'.format(self._key, self._getSub(config))
+
+
+class Feature(object):
+  """
+  Represents a Lit available feature that is enabled whenever it is supported.
+
+  A feature like this informs the test suite about a capability of the compiler,
+  platform, etc. Unlike Parameters, it does not make sense to explicitly
+  control whether a Feature is enabled -- it should be enabled whenever it
+  is supported.
+  """
+  def __init__(self, name, actions=None, when=lambda _: True):
+    """
+    Create a Lit feature for consumption by a test suite.
+
+    - name
+        The name of the feature. This is what will end up in Lit's available
+        features if the feature is enabled. This can be either a string or a
+        callable, in which case it is passed the TestingConfig and should
+        generate a string representing the name of the feature.
+
+    - actions
+        An optional list of ConfigActions to apply when the feature is supported.
+        An AddFeature action is always created regardless of any actions supplied
+        here -- these actions are meant to perform more than setting a corresponding
+        Lit feature (e.g. adding compiler flags). If 'actions' is a callable, it
+        is called with the current configuration object to generate the actual
+        list of actions.
+
+    - when
+        A callable that gets passed a TestingConfig and should return a
+        boolean representing whether the feature is supported in that
+        configuration. For example, this can use `hasCompileFlag` to
+        check whether the compiler supports the flag that the feature
+        represents. If omitted, the feature will always be considered
+        supported.
+    """
+    self._name = name
+    self._actions = [] if actions is None else actions
+    self._isSupported = when
+
+  def _getName(self, config):
+    name = self._name(config) if callable(self._name) else self._name
+    if not isinstance(name, str):
+      raise ValueError("Feature did not resolve to a name that's a string, got {}".format(name))
+    return name
+
+  def getActions(self, config):
+    """
+    Return the list of actions associated to this feature.
+
+    If the feature is not supported, an empty list is returned.
+    If the feature is supported, an `AddFeature` action is automatically added
+    to the returned list of actions, in addition to any actions provided on
+    construction.
+    """
+    if not self._isSupported(config):
+      return []
+    else:
+      actions = self._actions(config) if callable(self._actions) else self._actions
+      return [AddFeature(self._getName(config))] + actions
+
+  def pretty(self, config):
+    """
+    Returns the Feature's name.
+    """
+    return self._getName(config)
+
+
+def _str_to_bool(s):
+  """
+  Convert a string value to a boolean.
+
+  True values are "y", "yes", "t", "true", "on" and "1", regardless of capitalization.
+  False values are "n", "no", "f", "false", "off" and "0", regardless of capitalization.
+  """
+  trueVals = ["y", "yes", "t", "true", "on", "1"]
+  falseVals = ["n", "no", "f", "false", "off", "0"]
+  lower = s.lower()
+  if lower in trueVals:
+    return True
+  elif lower in falseVals:
+    return False
+  else:
+    raise ValueError("Got string '{}', which isn't a valid boolean".format(s))
+
+def _parse_parameter(s, type):
+  if type is bool and isinstance(s, str):
+    return _str_to_bool(s)
+  elif type is list and isinstance(s, str):
+    return [x.strip() for x in s.split(',') if x.strip()]
+  return type(s)
+
+
+class Parameter(object):
+  """
+  Represents a parameter of a Lit test suite.
+
+  Parameters are used to customize the behavior of test suites in a user
+  controllable way. There are two ways of setting the value of a Parameter.
+  The first one is to pass `--param <KEY>=<VALUE>` when running Lit (or
+  equivalently to set `litConfig.params[KEY] = VALUE` somewhere in the
+  Lit configuration files. This method will set the parameter globally for
+  all test suites being run.
+
+  The second method is to set `config.KEY = VALUE` somewhere in the Lit
+  configuration files, which sets the parameter only for the test suite(s)
+  that use that `config` object.
+
+  Parameters can have multiple possible values, and they can have a default
+  value when left unspecified. They can also have any number of ConfigActions
+  associated to them, in which case the actions will be performed on the
+  TestingConfig if the parameter is enabled. Depending on the actions
+  associated to a Parameter, it may be an error to enable the Parameter
+  if some actions are not supported in the given configuration. For example,
+  trying to set the compilation standard to C++23 when `-std=c++23` is not
+  supported by the compiler would be an error.
+  """
+  def __init__(self, name, type, help, actions, choices=None, default=None):
+    """
+    Create a Lit parameter to customize the behavior of a test suite.
+
+    - name
+        The name of the parameter that can be used to set it on the command-line.
+        On the command-line, the parameter can be set using `--param <name>=<value>`
+        when running Lit. This must be non-empty.
+
+    - choices
+        An optional non-empty set of possible values for this parameter. If provided,
+        this must be anything that can be iterated. It is an error if the parameter
+        is given a value that is not in that set, whether explicitly or through a
+        default value.
+
+    - type
+        A callable that can be used to parse the value of the parameter given
+        on the command-line. As a special case, using the type `bool` also
+        allows parsing strings with boolean-like contents, and the type `list`
+        will parse a string delimited by commas into a list of the substrings.
+
+    - help
+        A string explaining the parameter, for documentation purposes.
+        TODO: We should be able to surface those from the Lit command-line.
+
+    - actions
+        A callable that gets passed the parsed value of the parameter (either
+        the one passed on the command-line or the default one), and that returns
+        a list of ConfigAction to perform given the value of the parameter.
+        All the ConfigAction must be supported in the given configuration.
+
+    - default
+        An optional default value to use for the parameter when no value is
+        provided on the command-line. If the default value is a callable, it
+        is called with the TestingConfig and should return the default value
+        for the parameter. Whether the default value is computed or specified
+        directly, it must be in the 'choices' provided for that Parameter.
+    """
+    self._name = name
+    if len(self._name) == 0:
+      raise ValueError("Parameter name must not be the empty string")
+
+    if choices is not None:
+      self._choices = list(choices) # should be finite
+      if len(self._choices) == 0:
+        raise ValueError("Parameter '{}' must be given at least one possible value".format(self._name))
+    else:
+      self._choices = None
+
+    self._parse = lambda x: _parse_parameter(x, type)
+    self._help = help
+    self._actions = actions
+    self._default = default
+
+  def _getValue(self, config, litParams):
+    """
+    Return the value of the parameter given the configuration objects.
+    """
+    param = getattr(config, self.name, None)
+    param = litParams.get(self.name, param)
+    if param is None and self._default is None:
+      raise ValueError("Parameter {} doesn't have a default value, but it was not specified in the Lit parameters or in the Lit config".format(self.name))
+    getDefault = lambda: self._default(config) if callable(self._default) else self._default
+
+    if param is not None:
+      (pretty, value) = (param, self._parse(param))
+    else:
+      value = getDefault()
+      pretty = '{} (default)'.format(value)
+
+    if self._choices and value not in self._choices:
+      raise ValueError("Got value '{}' for parameter '{}', which is not in the provided set of possible choices: {}".format(value, self.name, self._choices))
+    return (pretty, value)
+
+  @property
+  def name(self):
+    """
+    Return the name of the parameter.
+
+    This is the name that can be used to set the parameter on the command-line
+    when running Lit.
+    """
+    return self._name
+
+  def getActions(self, config, litParams):
+    """
+    Return the list of actions associated to this value of the parameter.
+    """
+    (_, parameterValue) = self._getValue(config, litParams)
+    return self._actions(parameterValue)
+
+  def pretty(self, config, litParams):
+    """
+    Return a pretty representation of the parameter's name and value.
+    """
+    (prettyParameterValue, _) = self._getValue(config, litParams)
+    return "{}={}".format(self.name, prettyParameterValue)
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/features.py b/app/src/main/cpp/libcxx/utils/libcxx/test/features.py
new file mode 100644
index 0000000..fc03cdb
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/test/features.py
@@ -0,0 +1,343 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+from libcxx.test.dsl import *
+import re
+import shutil
+import sys
+import subprocess
+
+_isClang      = lambda cfg: '__clang__' in compilerMacros(cfg) and '__apple_build_version__' not in compilerMacros(cfg)
+_isAppleClang = lambda cfg: '__apple_build_version__' in compilerMacros(cfg)
+_isGCC        = lambda cfg: '__GNUC__' in compilerMacros(cfg) and '__clang__' not in compilerMacros(cfg)
+_isMSVC       = lambda cfg: '_MSC_VER' in compilerMacros(cfg)
+_msvcVersion  = lambda cfg: (int(compilerMacros(cfg)['_MSC_VER']) // 100, int(compilerMacros(cfg)['_MSC_VER']) % 100)
+
+def _getSuitableClangTidy(cfg):
+  try:
+    # If we didn't build the libcxx-tidy plugin via CMake, we can't run the clang-tidy tests.
+    if runScriptExitCode(cfg, ['stat %{test-tools}/clang_tidy_checks/libcxx-tidy.plugin']) != 0:
+      return None
+
+    # TODO This should be the last stable release.
+    if runScriptExitCode(cfg, ['clang-tidy-16 --version']) == 0:
+      return 'clang-tidy-16'
+
+    if int(re.search('[0-9]+', commandOutput(cfg, ['clang-tidy --version'])).group()) >= 16:
+      return 'clang-tidy'
+
+  except ConfigurationRuntimeError:
+    return None
+
+DEFAULT_FEATURES = [
+  Feature(name='fcoroutines-ts',
+          when=lambda cfg: hasCompileFlag(cfg, '-fcoroutines-ts') and
+                           featureTestMacros(cfg, flags='-fcoroutines-ts').get('__cpp_coroutines', 0) >= 201703,
+          actions=[AddCompileFlag('-fcoroutines-ts')]),
+
+  Feature(name='thread-safety',
+          when=lambda cfg: hasCompileFlag(cfg, '-Werror=thread-safety'),
+          actions=[AddCompileFlag('-Werror=thread-safety')]),
+
+  Feature(name='diagnose-if-support',
+          when=lambda cfg: hasCompileFlag(cfg, '-Wuser-defined-warnings'),
+          actions=[AddCompileFlag('-Wuser-defined-warnings')]),
+
+  # Tests to validate whether the compiler has a way to set the maximum number
+  # of steps during constant evaluation. Since the flag differs per compiler
+  # store the "valid" flag as a feature. This allows passing the proper compile
+  # flag to the compiler:
+  # // ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-steps): -fconstexpr-steps=12345678
+  # // ADDITIONAL_COMPILE_FLAGS(has-fconstexpr-ops-limit): -fconstexpr-ops-limit=12345678
+  Feature(name='has-fconstexpr-steps',
+          when=lambda cfg: hasCompileFlag(cfg, '-fconstexpr-steps=1')),
+
+  Feature(name='has-fconstexpr-ops-limit',
+          when=lambda cfg: hasCompileFlag(cfg, '-fconstexpr-ops-limit=1')),
+
+  Feature(name='has-fblocks',                   when=lambda cfg: hasCompileFlag(cfg, '-fblocks')),
+  Feature(name='-fsized-deallocation',          when=lambda cfg: hasCompileFlag(cfg, '-fsized-deallocation')),
+  Feature(name='-faligned-allocation',          when=lambda cfg: hasCompileFlag(cfg, '-faligned-allocation')),
+  Feature(name='fdelayed-template-parsing',     when=lambda cfg: hasCompileFlag(cfg, '-fdelayed-template-parsing')),
+  Feature(name='libcpp-no-coroutines',          when=lambda cfg: featureTestMacros(cfg).get('__cpp_impl_coroutine', 0) < 201902),
+  Feature(name='has-fobjc-arc',                 when=lambda cfg: hasCompileFlag(cfg, '-xobjective-c++ -fobjc-arc') and
+                                                                 sys.platform.lower().strip() == 'darwin'), # TODO: this doesn't handle cross-compiling to Apple platforms.
+  Feature(name='objective-c++',                 when=lambda cfg: hasCompileFlag(cfg, '-xobjective-c++ -fobjc-arc')),
+  Feature(name='verify-support',                when=lambda cfg: hasCompileFlag(cfg, '-Xclang -verify-ignore-unexpected')),
+
+  Feature(name='non-lockfree-atomics',
+          when=lambda cfg: sourceBuilds(cfg, """
+            #include <atomic>
+            struct Large { int storage[100]; };
+            std::atomic<Large> x;
+            int main(int, char**) { (void)x.load(); return 0; }
+          """)),
+  # TODO: Remove this feature once compiler-rt includes __atomic_is_lockfree()
+  # on all supported platforms.
+  Feature(name='is-lockfree-runtime-function',
+          when=lambda cfg: sourceBuilds(cfg, """
+            #include <atomic>
+            struct Large { int storage[100]; };
+            std::atomic<Large> x;
+            int main(int, char**) { return x.is_lock_free(); }
+          """)),
+
+  # Some tests rely on creating shared libraries which link in the C++ Standard Library. In some
+  # cases, this doesn't work (e.g. if the library was built as a static archive and wasn't compiled
+  # as position independent). This feature informs the test suite of whether it's possible to create
+  # a shared library in a shell test by using the '-shared' compiler flag.
+  #
+  # Note: To implement this check properly, we need to make sure that we use something inside the
+  # compiled library, not only in the headers. It should be safe to assume that all implementations
+  # define `operator new` in the compiled library.
+  Feature(name='cant-build-shared-library',
+          when=lambda cfg: not sourceBuilds(cfg, """
+            void f() { new int(3); }
+          """, ['-shared'])),
+
+  # Check for a Windows UCRT bug (fixed in UCRT/Windows 10.0.20348.0):
+  # https://developercommunity.visualstudio.com/t/utf-8-locales-break-ctype-functions-for-wchar-type/1653678
+  Feature(name='win32-broken-utf8-wchar-ctype',
+          when=lambda cfg: not '_LIBCPP_HAS_NO_LOCALIZATION' in compilerMacros(cfg) and '_WIN32' in compilerMacros(cfg) and not programSucceeds(cfg, """
+            #include <locale.h>
+            #include <wctype.h>
+            int main(int, char**) {
+              setlocale(LC_ALL, "en_US.UTF-8");
+              return towlower(L'\\xDA') != L'\\xFA';
+            }
+          """)),
+
+  # Check for a Windows UCRT bug (fixed in UCRT/Windows 10.0.19041.0).
+  # https://developercommunity.visualstudio.com/t/printf-formatting-with-g-outputs-too/1660837
+  Feature(name='win32-broken-printf-g-precision',
+          when=lambda cfg: '_WIN32' in compilerMacros(cfg) and not programSucceeds(cfg, """
+            #include <stdio.h>
+            #include <string.h>
+            int main(int, char**) {
+              char buf[100];
+              snprintf(buf, sizeof(buf), "%#.*g", 0, 0.0);
+              return strcmp(buf, "0.");
+            }
+          """)),
+
+  # Check for Glibc < 2.27, where the ru_RU.UTF-8 locale had
+  # mon_decimal_point == ".", which our tests don't handle.
+  Feature(name='glibc-old-ru_RU-decimal-point',
+          when=lambda cfg: not '_LIBCPP_HAS_NO_LOCALIZATION' in compilerMacros(cfg) and not programSucceeds(cfg, """
+            #include <locale.h>
+            #include <string.h>
+            int main(int, char**) {
+              setlocale(LC_ALL, "ru_RU.UTF-8");
+              return strcmp(localeconv()->mon_decimal_point, ",");
+            }
+          """)),
+
+  Feature(name='has-unix-headers',
+          when=lambda cfg: sourceBuilds(cfg, """
+            #include <unistd.h>
+            #include <sys/wait.h>
+            int main(int, char**) {
+              return 0;
+            }
+          """)),
+
+  # Check for an Android NAN printf change. Considering NAN and -NAN:
+  #  - Android L (APIs 21 and 22): "%f" and "%+f" print "nan".
+  #  - Android M (API 23) and up: "%f" prints "nan" or "-nan", "%+f" prints
+  #    "+nan" or "-nan".
+  # Set this feature for L, where the sign is never printed. Otherwise, "%+f"
+  # for non-negative NAN prints the '+' sign.
+  Feature(name='android-printf-nan-no-sign',
+          when=lambda cfg: '__ANDROID__' in compilerMacros(cfg) and not programSucceeds(cfg, """
+            #include <math.h>
+            #include <stdio.h>
+            int main(int, char**) {
+              char buf[100];
+              snprintf(buf, sizeof(buf), "%+f", NAN);
+              return buf[0] != '+';
+            }
+          """),
+          actions=[AddCompileFlag('-D_LIBCPP_TESTING_ANDROID_PRINTF_NAN_NO_SIGN')]),
+
+  # Whether Bash can run on the executor.
+  # This is not always the case, for example when running on embedded systems.
+  #
+  # For the corner case of bash existing, but it being missing in the path
+  # set in %{exec} as "--env PATH=one-single-dir", the executor does find
+  # and executes bash, but bash then can't find any other common shell
+  # utilities. Test executing "bash -c 'bash --version'" to see if bash
+  # manages to find binaries to execute.
+  Feature(name='executor-has-no-bash',
+          when=lambda cfg: runScriptExitCode(cfg, ['%{exec} bash -c \'bash --version\'']) != 0),
+  Feature(name='has-clang-tidy',
+          when=lambda cfg: _getSuitableClangTidy(cfg) is not None,
+          actions=[AddSubstitution('%{clang-tidy}', lambda cfg: _getSuitableClangTidy(cfg))]),
+
+  Feature(name='apple-clang',                                                                                                      when=_isAppleClang),
+  Feature(name=lambda cfg: 'apple-clang-{__clang_major__}'.format(**compilerMacros(cfg)),                                          when=_isAppleClang),
+  Feature(name=lambda cfg: 'apple-clang-{__clang_major__}.{__clang_minor__}'.format(**compilerMacros(cfg)),                        when=_isAppleClang),
+  Feature(name=lambda cfg: 'apple-clang-{__clang_major__}.{__clang_minor__}.{__clang_patchlevel__}'.format(**compilerMacros(cfg)), when=_isAppleClang),
+
+  Feature(name='clang',                                                                                                            when=_isClang),
+  Feature(name=lambda cfg: 'clang-{__clang_major__}'.format(**compilerMacros(cfg)),                                                when=_isClang),
+  Feature(name=lambda cfg: 'clang-{__clang_major__}.{__clang_minor__}'.format(**compilerMacros(cfg)),                              when=_isClang),
+  Feature(name=lambda cfg: 'clang-{__clang_major__}.{__clang_minor__}.{__clang_patchlevel__}'.format(**compilerMacros(cfg)),       when=_isClang),
+
+  # Note: Due to a GCC bug (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104760), we must disable deprecation warnings
+  #       on GCC or spurious diagnostics are issued.
+  #
+  # TODO:
+  # - Enable -Wplacement-new with GCC.
+  # - Enable -Wclass-memaccess with GCC.
+  Feature(name='gcc',                                                                                                              when=_isGCC,
+          actions=[AddCompileFlag('-D_LIBCPP_DISABLE_DEPRECATION_WARNINGS'),
+                   AddCompileFlag('-Wno-placement-new'),
+                   AddCompileFlag('-Wno-class-memaccess')]),
+  Feature(name=lambda cfg: 'gcc-{__GNUC__}'.format(**compilerMacros(cfg)),                                                         when=_isGCC),
+  Feature(name=lambda cfg: 'gcc-{__GNUC__}.{__GNUC_MINOR__}'.format(**compilerMacros(cfg)),                                        when=_isGCC),
+  Feature(name=lambda cfg: 'gcc-{__GNUC__}.{__GNUC_MINOR__}.{__GNUC_PATCHLEVEL__}'.format(**compilerMacros(cfg)),                  when=_isGCC),
+
+  Feature(name='msvc',                                                                                                             when=_isMSVC),
+  Feature(name=lambda cfg: 'msvc-{}'.format(*_msvcVersion(cfg)),                                                                   when=_isMSVC),
+  Feature(name=lambda cfg: 'msvc-{}.{}'.format(*_msvcVersion(cfg)),                                                                when=_isMSVC),
+]
+
+# Deduce and add the test features that that are implied by the #defines in
+# the <__config_site> header.
+#
+# For each macro of the form `_LIBCPP_XXX_YYY_ZZZ` defined below that
+# is defined after including <__config_site>, add a Lit feature called
+# `libcpp-xxx-yyy-zzz`. When a macro is defined to a specific value
+# (e.g. `_LIBCPP_ABI_VERSION=2`), the feature is `libcpp-xxx-yyy-zzz=<value>`.
+#
+# Note that features that are more strongly tied to libc++ are named libcpp-foo,
+# while features that are more general in nature are not prefixed with 'libcpp-'.
+macros = {
+  '_LIBCPP_HAS_NO_MONOTONIC_CLOCK': 'no-monotonic-clock',
+  '_LIBCPP_HAS_NO_THREADS': 'no-threads',
+  '_LIBCPP_HAS_THREAD_API_EXTERNAL': 'libcpp-has-thread-api-external',
+  '_LIBCPP_HAS_THREAD_API_PTHREAD': 'libcpp-has-thread-api-pthread',
+  '_LIBCPP_NO_VCRUNTIME': 'libcpp-no-vcruntime',
+  '_LIBCPP_ABI_VERSION': 'libcpp-abi-version',
+  '_LIBCPP_HAS_NO_FILESYSTEM_LIBRARY': 'no-filesystem',
+  '_LIBCPP_HAS_NO_RANDOM_DEVICE': 'no-random-device',
+  '_LIBCPP_HAS_NO_LOCALIZATION': 'no-localization',
+  '_LIBCPP_HAS_NO_FSTREAM': 'no-fstream',
+  '_LIBCPP_HAS_NO_WIDE_CHARACTERS': 'no-wide-characters',
+  '_LIBCPP_HAS_NO_UNICODE': 'libcpp-has-no-unicode',
+  '_LIBCPP_ENABLE_DEBUG_MODE': 'libcpp-has-debug-mode',
+}
+for macro, feature in macros.items():
+  DEFAULT_FEATURES.append(
+    Feature(name=lambda cfg, m=macro, f=feature: f + ('={}'.format(compilerMacros(cfg)[m]) if compilerMacros(cfg)[m] else ''),
+            when=lambda cfg, m=macro: m in compilerMacros(cfg))
+  )
+
+
+# Mapping from canonical locale names (used in the tests) to possible locale
+# names on various systems. Each locale is considered supported if any of the
+# alternative names is supported.
+locales = {
+  'en_US.UTF-8':     ['en_US.UTF-8', 'en_US.utf8', 'English_United States.1252'],
+  'fr_FR.UTF-8':     ['fr_FR.UTF-8', 'fr_FR.utf8', 'French_France.1252'],
+  'ja_JP.UTF-8':     ['ja_JP.UTF-8', 'ja_JP.utf8', 'Japanese_Japan.923'],
+  'ru_RU.UTF-8':     ['ru_RU.UTF-8', 'ru_RU.utf8', 'Russian_Russia.1251'],
+  'zh_CN.UTF-8':     ['zh_CN.UTF-8', 'zh_CN.utf8', 'Chinese_China.936'],
+  'fr_CA.ISO8859-1': ['fr_CA.ISO8859-1', 'French_Canada.1252'],
+  'cs_CZ.ISO8859-2': ['cs_CZ.ISO8859-2', 'Czech_Czech Republic.1250']
+}
+for locale, alts in locales.items():
+  # Note: Using alts directly in the lambda body here will bind it to the value at the
+  # end of the loop. Assigning it to a default argument works around this issue.
+  DEFAULT_FEATURES.append(Feature(name='locale.{}'.format(locale),
+                                  when=lambda cfg, alts=alts: hasAnyLocale(cfg, alts)))
+
+
+# Add features representing the target platform name: darwin, linux, windows, etc...
+DEFAULT_FEATURES += [
+  Feature(name='darwin', when=lambda cfg: '__APPLE__' in compilerMacros(cfg)),
+  Feature(name='windows', when=lambda cfg: '_WIN32' in compilerMacros(cfg)),
+  Feature(name='windows-dll', when=lambda cfg: '_WIN32' in compilerMacros(cfg) and programSucceeds(cfg, """
+            #include <iostream>
+            #include <windows.h>
+            #include <winnt.h>
+            int main(int, char**) {
+              // Get a pointer to a data member that gets linked from the C++
+              // library. This must be a data member (functions can get
+              // thunk inside the calling executable), and must not be
+              // something that is defined inline in headers.
+              void *ptr = &std::cout;
+              // Get a handle to the current main executable.
+              void *exe = GetModuleHandle(NULL);
+              // The handle points at the PE image header. Navigate through
+              // the header structure to find the size of the PE image (the
+              // executable).
+              PIMAGE_DOS_HEADER dosheader = (PIMAGE_DOS_HEADER)exe;
+              PIMAGE_NT_HEADERS ntheader = (PIMAGE_NT_HEADERS)((BYTE *)dosheader + dosheader->e_lfanew);
+              PIMAGE_OPTIONAL_HEADER peheader = &ntheader->OptionalHeader;
+              void *exeend = (BYTE*)exe + peheader->SizeOfImage;
+              // Check if the tested pointer - the data symbol from the
+              // C++ library - is located within the exe.
+              if (ptr >= exe && ptr <= exeend)
+                return 1;
+              // Return success if it was outside of the executable, i.e.
+              // loaded from a DLL.
+              return 0;
+            }
+          """), actions=[AddCompileFlag('-DTEST_WINDOWS_DLL')]),
+  Feature(name='linux', when=lambda cfg: '__linux__' in compilerMacros(cfg)),
+  Feature(name='netbsd', when=lambda cfg: '__NetBSD__' in compilerMacros(cfg)),
+  Feature(name='freebsd', when=lambda cfg: '__FreeBSD__' in compilerMacros(cfg)),
+  Feature(name='LIBCXX-FREEBSD-FIXME', when=lambda cfg: '__FreeBSD__' in compilerMacros(cfg)),
+]
+
+# Add features representing the build host platform name.
+# The build host could differ from the target platform for cross-compilation.
+DEFAULT_FEATURES += [
+  Feature(name='buildhost={}'.format(sys.platform.lower().strip())),
+  # sys.platform can often be represented by a "sub-system", such as 'win32', 'cygwin', 'mingw', freebsd13 & etc.
+  # We define a consolidated feature on a few platforms.
+  Feature(name='buildhost=windows', when=lambda cfg: platform.system().lower().startswith('windows')),
+  Feature(name='buildhost=freebsd', when=lambda cfg: platform.system().lower().startswith('freebsd')),
+  Feature(name='buildhost=aix', when=lambda cfg: platform.system().lower().startswith('aix'))
+]
+
+# Detect whether GDB is on the system, has Python scripting and supports
+# adding breakpoint commands. If so add a substitution to access it.
+def check_gdb(cfg):
+  gdb_path = shutil.which('gdb')
+  if gdb_path is None:
+    return False
+
+  # Check that we can set breakpoint commands, which was added in 8.3.
+  # Using the quit command here means that gdb itself exits, not just
+  # the "python <...>" command.
+  test_src = """\
+try:
+  gdb.Breakpoint(\"main\").commands=\"foo\"
+except AttributeError:
+  gdb.execute(\"quit 1\")
+gdb.execute(\"quit\")"""
+
+  try:
+    stdout = subprocess.check_output(
+              [gdb_path, "-ex", "python " + test_src, "--batch"],
+              stderr=subprocess.DEVNULL, universal_newlines=True)
+  except subprocess.CalledProcessError:
+    # We can't set breakpoint commands
+    return False
+
+  # Check we actually ran the Python
+  return not "Python scripting is not supported" in stdout
+
+DEFAULT_FEATURES += [
+  Feature(name='host-has-gdb-with-python',
+    when=check_gdb,
+    actions=[AddSubstitution('%{gdb}', lambda cfg: shutil.which('gdb'))]
+  )
+]
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/format.py b/app/src/main/cpp/libcxx/utils/libcxx/test/format.py
new file mode 100644
index 0000000..6860f8d
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/test/format.py
@@ -0,0 +1,287 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+import lit
+import lit.formats
+import os
+import pipes
+import re
+import shutil
+
+def _getTempPaths(test):
+    """
+    Return the values to use for the %T and %t substitutions, respectively.
+
+    The difference between this and Lit's default behavior is that we guarantee
+    that %T is a path unique to the test being run.
+    """
+    tmpDir, _ = lit.TestRunner.getTempPaths(test)
+    _, testName = os.path.split(test.getExecPath())
+    tmpDir = os.path.join(tmpDir, testName + '.dir')
+    tmpBase = os.path.join(tmpDir, 't')
+    return tmpDir, tmpBase
+
+def _checkBaseSubstitutions(substitutions):
+    substitutions = [s for (s, _) in substitutions]
+    for s in ['%{cxx}', '%{compile_flags}', '%{link_flags}', '%{flags}', '%{exec}']:
+        assert s in substitutions, "Required substitution {} was not provided".format(s)
+
+def parseScript(test, preamble):
+    """
+    Extract the script from a test, with substitutions applied.
+
+    Returns a list of commands ready to be executed.
+
+    - test
+        The lit.Test to parse.
+
+    - preamble
+        A list of commands to perform before any command in the test.
+        These commands can contain unexpanded substitutions, but they
+        must not be of the form 'RUN:' -- they must be proper commands
+        once substituted.
+    """
+    # Get the default substitutions
+    tmpDir, tmpBase = _getTempPaths(test)
+    substitutions = lit.TestRunner.getDefaultSubstitutions(test, tmpDir, tmpBase)
+
+    # Check base substitutions and add the %{build} and %{run} convenience substitutions
+    _checkBaseSubstitutions(substitutions)
+    substitutions.append(('%{build}', '%{cxx} %s %{flags} %{compile_flags} %{link_flags} -o %t.exe'))
+    substitutions.append(('%{run}', '%{exec} %t.exe'))
+
+    # Parse the test file, including custom directives
+    additionalCompileFlags = []
+    fileDependencies = []
+    parsers = [
+        lit.TestRunner.IntegratedTestKeywordParser('FILE_DEPENDENCIES:',
+                                                   lit.TestRunner.ParserKind.LIST,
+                                                   initial_value=fileDependencies),
+        lit.TestRunner.IntegratedTestKeywordParser('ADDITIONAL_COMPILE_FLAGS:',
+                                                   lit.TestRunner.ParserKind.LIST,
+                                                   initial_value=additionalCompileFlags)
+    ]
+
+    # Add conditional parsers for ADDITIONAL_COMPILE_FLAGS. This should be replaced by first
+    # class support for conditional keywords in Lit, which would allow evaluating arbitrary
+    # Lit boolean expressions instead.
+    for feature in test.config.available_features:
+        parser = lit.TestRunner.IntegratedTestKeywordParser('ADDITIONAL_COMPILE_FLAGS({}):'.format(feature),
+                                                            lit.TestRunner.ParserKind.LIST,
+                                                            initial_value=additionalCompileFlags)
+        parsers.append(parser)
+
+    scriptInTest = lit.TestRunner.parseIntegratedTestScript(test, additional_parsers=parsers,
+                                                            require_script=not preamble)
+    if isinstance(scriptInTest, lit.Test.Result):
+        return scriptInTest
+
+    script = []
+
+    # For each file dependency in FILE_DEPENDENCIES, inject a command to copy
+    # that file to the execution directory. Execute the copy from %S to allow
+    # relative paths from the test directory.
+    for dep in fileDependencies:
+        script += ['%dbg(SETUP) cd %S && cp {} %T'.format(dep)]
+    script += preamble
+    script += scriptInTest
+
+    # Add compile flags specified with ADDITIONAL_COMPILE_FLAGS.
+    substitutions = [(s, x + ' ' + ' '.join(additionalCompileFlags)) if s == '%{compile_flags}'
+                            else (s, x) for (s, x) in substitutions]
+
+    # Perform substitutions in the script itself.
+    script = lit.TestRunner.applySubstitutions(script, substitutions,
+                                               recursion_limit=test.config.recursiveExpansionLimit)
+
+    return script
+
+
+class CxxStandardLibraryTest(lit.formats.TestFormat):
+    """
+    Lit test format for the C++ Standard Library conformance test suite.
+
+    This test format is based on top of the ShTest format -- it basically
+    creates a shell script performing the right operations (compile/link/run)
+    based on the extension of the test file it encounters. It supports files
+    with the following extensions:
+
+    FOO.pass.cpp            - Compiles, links and runs successfully
+    FOO.pass.mm             - Same as .pass.cpp, but for Objective-C++
+
+    FOO.compile.pass.cpp    - Compiles successfully, link and run not attempted
+    FOO.compile.fail.cpp    - Does not compile successfully
+
+    FOO.link.pass.cpp       - Compiles and links successfully, run not attempted
+    FOO.link.fail.cpp       - Compiles successfully, but fails to link
+
+    FOO.sh.<anything>       - A builtin Lit Shell test
+
+    FOO.verify.cpp          - Compiles with clang-verify. This type of test is
+                              automatically marked as UNSUPPORTED if the compiler
+                              does not support Clang-verify.
+
+    FOO.fail.cpp            - Compiled with clang-verify if clang-verify is
+                              supported, and equivalent to a .compile.fail.cpp
+                              test otherwise. This is supported only for backwards
+                              compatibility with the test suite.
+
+
+    Substitution requirements
+    ===============================
+    The test format operates by assuming that each test's configuration provides
+    the following substitutions, which it will reuse in the shell scripts it
+    constructs:
+        %{cxx}           - A command that can be used to invoke the compiler
+        %{compile_flags} - Flags to use when compiling a test case
+        %{link_flags}    - Flags to use when linking a test case
+        %{flags}         - Flags to use either when compiling or linking a test case
+        %{exec}          - A command to prefix the execution of executables
+
+    Note that when building an executable (as opposed to only compiling a source
+    file), all three of %{flags}, %{compile_flags} and %{link_flags} will be used
+    in the same command line. In other words, the test format doesn't perform
+    separate compilation and linking steps in this case.
+
+
+    Additional supported directives
+    ===============================
+    In addition to everything that's supported in Lit ShTests, this test format
+    also understands the following directives inside test files:
+
+        // FILE_DEPENDENCIES: file, directory, /path/to/file
+
+            This directive expresses that the test requires the provided files
+            or directories in order to run. An example is a test that requires
+            some test input stored in a data file. When a test file contains
+            such a directive, this test format will collect them and copy them
+            to the directory represented by %T. The intent is that %T contains
+            all the inputs necessary to run the test, such that e.g. execution
+            on a remote host can be done by simply copying %T to the host.
+
+        // ADDITIONAL_COMPILE_FLAGS: flag1, flag2, flag3
+
+            This directive will cause the provided flags to be added to the
+            %{compile_flags} substitution for the test that contains it. This
+            allows adding special compilation flags without having to use a
+            .sh.cpp test, which would be more powerful but perhaps overkill.
+
+
+    Additional provided substitutions and features
+    ==============================================
+    The test format will define the following substitutions for use inside tests:
+
+        %{build}
+            Expands to a command-line that builds the current source
+            file with the %{flags}, %{compile_flags} and %{link_flags}
+            substitutions, and that produces an executable named %t.exe.
+
+        %{run}
+            Equivalent to `%{exec} %t.exe`. This is intended to be used
+            in conjunction with the %{build} substitution.
+    """
+    def getTestsInDirectory(self, testSuite, pathInSuite, litConfig, localConfig):
+        SUPPORTED_SUFFIXES = ['[.]pass[.]cpp$', '[.]pass[.]mm$',
+                              '[.]compile[.]pass[.]cpp$', '[.]compile[.]fail[.]cpp$',
+                              '[.]link[.]pass[.]cpp$', '[.]link[.]fail[.]cpp$',
+                              '[.]sh[.][^.]+$',
+                              '[.]verify[.]cpp$',
+                              '[.]fail[.]cpp$']
+        sourcePath = testSuite.getSourcePath(pathInSuite)
+        for filename in os.listdir(sourcePath):
+            # Ignore dot files and excluded tests.
+            if filename.startswith('.') or filename in localConfig.excludes:
+                continue
+
+            filepath = os.path.join(sourcePath, filename)
+            if not os.path.isdir(filepath):
+                if any([re.search(ext, filename) for ext in SUPPORTED_SUFFIXES]):
+                    yield lit.Test.Test(testSuite, pathInSuite + (filename,), localConfig)
+
+    def execute(self, test, litConfig):
+        VERIFY_FLAGS = '-Xclang -verify -Xclang -verify-ignore-unexpected=note -ferror-limit=0'
+        supportsVerify = 'verify-support' in test.config.available_features
+        filename = test.path_in_suite[-1]
+
+        if re.search('[.]sh[.][^.]+$', filename):
+            steps = [ ] # The steps are already in the script
+            return self._executeShTest(test, litConfig, steps)
+        elif filename.endswith('.compile.pass.cpp'):
+            steps = [
+                "%dbg(COMPILED WITH) %{cxx} %s %{flags} %{compile_flags} -fsyntax-only"
+            ]
+            return self._executeShTest(test, litConfig, steps)
+        elif filename.endswith('.compile.fail.cpp'):
+            steps = [
+                "%dbg(COMPILED WITH) ! %{cxx} %s %{flags} %{compile_flags} -fsyntax-only"
+            ]
+            return self._executeShTest(test, litConfig, steps)
+        elif filename.endswith('.link.pass.cpp'):
+            steps = [
+                "%dbg(COMPILED WITH) %{cxx} %s %{flags} %{compile_flags} %{link_flags} -o %t.exe"
+            ]
+            return self._executeShTest(test, litConfig, steps)
+        elif filename.endswith('.link.fail.cpp'):
+            steps = [
+                "%dbg(COMPILED WITH) %{cxx} %s %{flags} %{compile_flags} -c -o %t.o",
+                "%dbg(LINKED WITH) ! %{cxx} %t.o %{flags} %{link_flags} -o %t.exe"
+            ]
+            return self._executeShTest(test, litConfig, steps)
+        elif filename.endswith('.verify.cpp'):
+            if not supportsVerify:
+                return lit.Test.Result(lit.Test.UNSUPPORTED,
+                    "Test {} requires support for Clang-verify, which isn't supported by the compiler".format(test.getFullName()))
+            steps = [
+                # Note: Use -Wno-error to make sure all diagnostics are not treated as errors,
+                #       which doesn't make sense for clang-verify tests.
+                "%dbg(COMPILED WITH) %{{cxx}} %s %{{flags}} %{{compile_flags}} -fsyntax-only -Wno-error {}".format(VERIFY_FLAGS)
+            ]
+            return self._executeShTest(test, litConfig, steps)
+        # Make sure to check these ones last, since they will match other
+        # suffixes above too.
+        elif filename.endswith('.pass.cpp') or filename.endswith('.pass.mm'):
+            steps = [
+                "%dbg(COMPILED WITH) %{cxx} %s %{flags} %{compile_flags} %{link_flags} -o %t.exe",
+                "%dbg(EXECUTED AS) %{exec} %t.exe"
+            ]
+            return self._executeShTest(test, litConfig, steps)
+        # This is like a .verify.cpp test when clang-verify is supported,
+        # otherwise it's like a .compile.fail.cpp test. This is only provided
+        # for backwards compatibility with the test suite.
+        elif filename.endswith('.fail.cpp'):
+            if supportsVerify:
+                steps = [
+                    "%dbg(COMPILED WITH) %{{cxx}} %s %{{flags}} %{{compile_flags}} -fsyntax-only -Wno-error {}".format(VERIFY_FLAGS)
+                ]
+            else:
+                steps = [
+                    "%dbg(COMPILED WITH) ! %{cxx} %s %{flags} %{compile_flags} -fsyntax-only"
+                ]
+            return self._executeShTest(test, litConfig, steps)
+        else:
+            return lit.Test.Result(lit.Test.UNRESOLVED, "Unknown test suffix for '{}'".format(filename))
+
+    # Utility function to add compile flags in lit.local.cfg files.
+    def addCompileFlags(self, config, *flags):
+        string = ' '.join(flags)
+        config.substitutions = [(s, x + ' ' + string) if s == '%{compile_flags}' else (s, x) for (s, x) in config.substitutions]
+
+    def _executeShTest(self, test, litConfig, steps):
+        if test.config.unsupported:
+            return lit.Test.Result(lit.Test.UNSUPPORTED, 'Test is unsupported')
+
+        script = parseScript(test, steps)
+        if isinstance(script, lit.Test.Result):
+            return script
+
+        if litConfig.noExecute:
+            return lit.Test.Result(lit.Test.XFAIL if test.isExpectedToFail() else lit.Test.PASS)
+        else:
+            _, tmpBase = _getTempPaths(test)
+            useExternalSh = False
+            return lit.TestRunner._runShTest(test, litConfig, useExternalSh, script, tmpBase)
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/googlebenchmark.py b/app/src/main/cpp/libcxx/utils/libcxx/test/googlebenchmark.py
new file mode 100644
index 0000000..d6960a7
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/test/googlebenchmark.py
@@ -0,0 +1,121 @@
+from __future__ import absolute_import
+import os
+import subprocess
+import sys
+
+import lit.Test
+import lit.TestRunner
+import lit.util
+from lit.formats.base import TestFormat
+
+kIsWindows = sys.platform in ['win32', 'cygwin']
+
+class GoogleBenchmark(TestFormat):
+    def __init__(self, test_sub_dirs, test_suffix, benchmark_args=[]):
+        self.benchmark_args = list(benchmark_args)
+        self.test_sub_dirs = os.path.normcase(str(test_sub_dirs)).split(';')
+
+        # On Windows, assume tests will also end in '.exe'.
+        exe_suffix = str(test_suffix)
+        if kIsWindows:
+            exe_suffix += '.exe'
+
+        # Also check for .py files for testing purposes.
+        self.test_suffixes = {exe_suffix, test_suffix + '.py'}
+
+    def getBenchmarkTests(self, path, litConfig, localConfig):
+        """getBenchmarkTests(path) - [name]
+
+        Return the tests available in gtest executable.
+
+        Args:
+          path: String path to a gtest executable
+          litConfig: LitConfig instance
+          localConfig: TestingConfig instance"""
+
+        # TODO: allow splitting tests according to the "benchmark family" so
+        # the output for a single family of tests all belongs to the same test
+        # target.
+        list_test_cmd = [path, '--benchmark_list_tests']
+        try:
+            output = subprocess.check_output(list_test_cmd,
+                                             env=localConfig.environment)
+        except subprocess.CalledProcessError as exc:
+            litConfig.warning(
+                "unable to discover google-benchmarks in %r: %s. Process output: %s"
+                % (path, sys.exc_info()[1], exc.output))
+            raise StopIteration
+
+        nested_tests = []
+        for ln in output.splitlines(False):  # Don't keep newlines.
+            ln = lit.util.to_string(ln)
+            if not ln.strip():
+                continue
+
+            index = 0
+            while ln[index*2:index*2+2] == '  ':
+                index += 1
+            while len(nested_tests) > index:
+                nested_tests.pop()
+
+            ln = ln[index*2:]
+            if ln.endswith('.'):
+                nested_tests.append(ln)
+            elif any([name.startswith('DISABLED_')
+                      for name in nested_tests + [ln]]):
+                # Gtest will internally skip these tests. No need to launch a
+                # child process for it.
+                continue
+            else:
+                yield ''.join(nested_tests) + ln
+
+    def getTestsInDirectory(self, testSuite, path_in_suite,
+                            litConfig, localConfig):
+        source_path = testSuite.getSourcePath(path_in_suite)
+        for subdir in self.test_sub_dirs:
+            dir_path = os.path.join(source_path, subdir)
+            if not os.path.isdir(dir_path):
+                continue
+            for fn in lit.util.listdir_files(dir_path,
+                                             suffixes=self.test_suffixes):
+                # Discover the tests in this executable.
+                execpath = os.path.join(source_path, subdir, fn)
+                testnames = self.getBenchmarkTests(execpath, litConfig, localConfig)
+                for testname in testnames:
+                    testPath = path_in_suite + (subdir, fn, testname)
+                    yield lit.Test.Test(testSuite, testPath, localConfig,
+                                        file_path=execpath)
+
+    def execute(self, test, litConfig):
+        testPath,testName = os.path.split(test.getSourcePath())
+        while not os.path.exists(testPath):
+            # Handle GTest parametrized and typed tests, whose name includes
+            # some '/'s.
+            testPath, namePrefix = os.path.split(testPath)
+            testName = namePrefix + '/' + testName
+
+        cmd = [testPath, '--benchmark_filter=%s$' % testName ] + self.benchmark_args
+
+        if litConfig.noExecute:
+            return lit.Test.PASS, ''
+
+        try:
+            out, err, exitCode = lit.util.executeCommand(
+                cmd, env=test.config.environment,
+                timeout=litConfig.maxIndividualTestTime)
+        except lit.util.ExecuteCommandTimeoutException:
+            return (lit.Test.TIMEOUT,
+                    'Reached timeout of {} seconds'.format(
+                        litConfig.maxIndividualTestTime)
+                   )
+
+        if exitCode:
+            return lit.Test.FAIL, ('exit code: %d\n' % exitCode) + out + err
+
+        passing_test_line = testName
+        if passing_test_line not in out:
+            msg = ('Unable to find %r in google benchmark output:\n\n%s%s' %
+                   (passing_test_line, out, err))
+            return lit.Test.UNRESOLVED, msg
+
+        return lit.Test.PASS, err + out
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/newconfig.py b/app/src/main/cpp/libcxx/utils/libcxx/test/newconfig.py
new file mode 100644
index 0000000..253f8e8
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/test/newconfig.py
@@ -0,0 +1,49 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+import os
+
+
+def _getSubstitution(substitution, config):
+  for (orig, replacement) in config.substitutions:
+    if orig == substitution:
+      return replacement
+  raise ValueError('Substitution {} is not in the config.'.format(substitution))
+
+def configure(parameters, features, config, lit_config):
+  note = lambda s: lit_config.note("({}) {}".format(config.name, s))
+  config.environment = dict(os.environ)
+
+  # Apply the actions supplied by parameters to the configuration first, since
+  # parameters are things that we request explicitly and which might influence
+  # what features are implicitly made available next.
+  for param in parameters:
+    actions = param.getActions(config, lit_config.params)
+    for action in actions:
+      action.applyTo(config)
+      if lit_config.debug:
+        note("Applied '{}' as a result of parameter '{}'".format(
+          action.pretty(config, lit_config.params),
+          param.pretty(config, lit_config.params)))
+
+  # Then, apply the automatically-detected features.
+  for feature in features:
+    actions = feature.getActions(config)
+    for action in actions:
+      action.applyTo(config)
+      if lit_config.debug:
+        note("Applied '{}' as a result of implicitly detected feature '{}'".format(
+          action.pretty(config, lit_config.params),
+          feature.pretty(config)))
+
+  # Print the basic substitutions
+  for sub in ('%{cxx}', '%{flags}', '%{compile_flags}', '%{link_flags}', '%{exec}'):
+    note("Using {} substitution: '{}'".format(sub, _getSubstitution(sub, config)))
+
+  # Print all available features
+  note("All available features: {}".format(', '.join(config.available_features)))
diff --git a/app/src/main/cpp/libcxx/utils/libcxx/test/params.py b/app/src/main/cpp/libcxx/utils/libcxx/test/params.py
new file mode 100644
index 0000000..74a4ec2
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/libcxx/test/params.py
@@ -0,0 +1,245 @@
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+from libcxx.test.dsl import *
+from libcxx.test.features import _isMSVC
+import re
+
+_warningFlags = [
+  '-Werror',
+  '-Wall',
+  '-Wctad-maybe-unsupported',
+  '-Wextra',
+  '-Wshadow',
+  '-Wundef',
+  '-Wno-unused-command-line-argument',
+  '-Wno-attributes',
+  '-Wno-pessimizing-move',
+  '-Wno-c++11-extensions',
+  '-Wno-noexcept-type',
+  '-Wno-aligned-allocation-unavailable',
+  '-Wno-atomic-alignment',
+
+  # GCC warns about places where we might want to add sized allocation/deallocation
+  # functions, but we know better what we're doing/testing in the test suite.
+  '-Wno-sized-deallocation',
+
+  # Turn off warnings about user-defined literals with reserved suffixes. Those are
+  # just noise since we are testing the Standard Library itself.
+  '-Wno-literal-suffix', # GCC
+  '-Wno-user-defined-literals', # Clang
+
+  # GCC warns about this when TEST_IS_CONSTANT_EVALUATED is used on a non-constexpr
+  # function. (This mostely happens in C++11 mode.)
+  # TODO(mordante) investigate a solution for this issue.
+  '-Wno-tautological-compare',
+
+  # -Wstringop-overread and -Wstringop-overflow seem to be a bit buggy currently
+  '-Wno-stringop-overread',
+  '-Wno-stringop-overflow',
+
+  # These warnings should be enabled in order to support the MSVC
+  # team using the test suite; They enable the warnings below and
+  # expect the test suite to be clean.
+  '-Wsign-compare',
+  '-Wunused-variable',
+  '-Wunused-parameter',
+  '-Wunreachable-code',
+  '-Wno-unused-local-typedef',
+]
+
+_allStandards = ['c++03', 'c++11', 'c++14', 'c++17', 'c++20', 'c++2b']
+def getStdFlag(cfg, std):
+  fallbacks = {
+    'c++11': 'c++0x',
+    'c++14': 'c++1y',
+    'c++17': 'c++1z',
+    'c++20': 'c++2a',
+  }
+  if hasCompileFlag(cfg, '-std='+std):
+    return '-std='+std
+  if std in fallbacks and hasCompileFlag(cfg, '-std='+fallbacks[std]):
+    return '-std='+fallbacks[std]
+  return None
+
+DEFAULT_PARAMETERS = [
+  Parameter(name='target_triple', type=str,
+            help="The target triple to compile the test suite for. This must be "
+                 "compatible with the target that the tests will be run on.",
+            actions=lambda triple: filter(None, [
+              AddFeature('target={}'.format(triple)),
+              AddFlagIfSupported('--target={}'.format(triple)),
+              AddSubstitution('%{triple}', triple)
+            ])),
+
+  Parameter(name='std', choices=_allStandards, type=str,
+            help="The version of the standard to compile the test suite with.",
+            default=lambda cfg: next(s for s in reversed(_allStandards) if getStdFlag(cfg, s)),
+            actions=lambda std: [
+              AddFeature(std),
+              AddSubstitution('%{cxx_std}', re.sub('\+','x', std)),
+              AddCompileFlag(lambda cfg: getStdFlag(cfg, std)),
+            ]),
+
+  Parameter(name='enable_modules', choices=[True, False], type=bool, default=False,
+            help="Whether to build the test suite with Clang modules enabled.",
+            actions=lambda modules: [
+              AddFeature('modules-build'),
+              AddCompileFlag('-fmodules'),
+              AddCompileFlag('-fcxx-modules'), # AppleClang disregards -fmodules entirely when compiling C++. This enables modules for C++.
+            ] if modules else []),
+
+  Parameter(name='enable_exceptions', choices=[True, False], type=bool, default=True,
+            help="Whether to enable exceptions when compiling the test suite.",
+            actions=lambda exceptions: [] if exceptions else [
+              AddFeature('no-exceptions'),
+              AddCompileFlag('-fno-exceptions')
+            ]),
+
+  Parameter(name='enable_rtti', choices=[True, False], type=bool, default=True,
+            help="Whether to enable RTTI when compiling the test suite.",
+            actions=lambda rtti: [] if rtti else [
+              AddFeature('no-rtti'),
+              AddCompileFlag('-fno-rtti')
+            ]),
+
+  Parameter(name='stdlib', choices=['llvm-libc++', 'apple-libc++', 'libstdc++', 'msvc'], type=str, default='llvm-libc++',
+            help="""The C++ Standard Library implementation being tested.
+
+                 Note that this parameter can also be used to encode different 'flavors' of the same
+                 standard library, such as libc++ as shipped by a different vendor, if it has different
+                 properties worth testing.
+
+                 The Standard libraries currently supported are:
+                 - llvm-libc++: The 'upstream' libc++ as shipped with LLVM.
+                 - apple-libc++: libc++ as shipped by Apple. This is basically like the LLVM one, but
+                                 there are a few differences like installation paths and the use of
+                                 universal dylibs.
+                 - libstdc++: The GNU C++ library typically shipped with GCC.
+                 - msvc: The Microsoft implementation of the C++ Standard Library.
+                """,
+            actions=lambda stdlib: filter(None, [
+              AddFeature('stdlib={}'.format(stdlib)),
+              # Also add an umbrella feature 'stdlib=libc++' for all flavors of libc++, to simplify
+              # the test suite.
+              AddFeature('stdlib=libc++') if re.match('.+-libc\+\+', stdlib) else None
+            ])),
+
+  Parameter(name='enable_warnings', choices=[True, False], type=bool, default=True,
+            help="Whether to enable warnings when compiling the test suite.",
+            actions=lambda warnings: [] if not warnings else
+              [AddOptionalWarningFlag(w) for w in _warningFlags] +
+              [AddCompileFlag('-D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER')]
+            ),
+
+  Parameter(name='use_sanitizer', choices=['', 'Address', 'HWAddress', 'Undefined', 'Memory', 'MemoryWithOrigins', 'Thread', 'DataFlow', 'Leaks'], type=str, default='',
+            help="An optional sanitizer to enable when building and running the test suite.",
+            actions=lambda sanitizer: filter(None, [
+              AddFlag('-g -fno-omit-frame-pointer') if sanitizer else None,
+
+              AddFlag('-fsanitize=undefined -fno-sanitize=float-divide-by-zero -fno-sanitize-recover=all') if sanitizer == 'Undefined' else None,
+              AddFeature('ubsan')                                                                          if sanitizer == 'Undefined' else None,
+
+              AddFlag('-fsanitize=address') if sanitizer == 'Address' else None,
+              AddFeature('asan')            if sanitizer == 'Address' else None,
+
+              AddFlag('-fsanitize=hwaddress') if sanitizer == 'HWAddress' else None,
+              AddFeature('hwasan')            if sanitizer == 'HWAddress' else None,
+
+              AddFlag('-fsanitize=memory')               if sanitizer in ['Memory', 'MemoryWithOrigins'] else None,
+              AddFeature('msan')                         if sanitizer in ['Memory', 'MemoryWithOrigins'] else None,
+              AddFlag('-fsanitize-memory-track-origins') if sanitizer == 'MemoryWithOrigins' else None,
+
+              AddFlag('-fsanitize=thread') if sanitizer == 'Thread' else None,
+              AddFeature('tsan')           if sanitizer == 'Thread' else None,
+
+              AddFlag('-fsanitize=dataflow') if sanitizer == 'DataFlow' else None,
+              AddFlag('-fsanitize=leaks') if sanitizer == 'Leaks' else None,
+
+              AddFeature('sanitizer-new-delete') if sanitizer in ['Address', 'HWAddress', 'Memory', 'MemoryWithOrigins', 'Thread'] else None,
+            ])),
+
+  Parameter(name='enable_experimental', choices=[True, False], type=bool, default=True,
+            help="Whether to enable tests for experimental C++ Library features.",
+            actions=lambda experimental: [
+              # When linking in MSVC mode via the Clang driver, a -l<foo>
+              # maps to <foo>.lib, so we need to use -llibc++experimental here
+              # to make it link against the static libc++experimental.lib.
+              # We can't check for the feature 'msvc' in available_features
+              # as those features are added after processing parameters.
+              AddFeature('c++experimental'),
+              PrependLinkFlag(lambda cfg: '-llibc++experimental' if _isMSVC(cfg) else '-lc++experimental'),
+              AddCompileFlag('-D_LIBCPP_ENABLE_EXPERIMENTAL'),
+            ] if experimental else [
+              AddFeature('libcpp-has-no-incomplete-format'),
+            ]),
+
+  Parameter(name='long_tests', choices=[True, False], type=bool, default=True,
+            help="Whether to enable tests that take longer to run. This can be useful when running on a very slow device.",
+            actions=lambda enabled: [] if not enabled else [
+              AddFeature('long_tests')
+            ]),
+
+  Parameter(name='enable_assertions', choices=[True, False], type=bool, default=False,
+            help="Whether to enable assertions when compiling the test suite. This is only meaningful when "
+                 "running the tests against libc++.",
+            actions=lambda assertions: [
+              AddCompileFlag('-D_LIBCPP_ENABLE_ASSERTIONS=1'),
+              AddFeature('libcpp-has-assertions')
+            ] if assertions else []),
+
+  Parameter(name='additional_features', type=list, default=[],
+            help="A comma-delimited list of additional features that will be enabled when running the tests. "
+                 "This should be used sparingly since specifying ad-hoc features manually is error-prone and "
+                 "brittle in the long run as changes are made to the test suite.",
+            actions=lambda features: [AddFeature(f) for f in features]),
+
+  Parameter(name='enable_transitive_includes', choices=[True, False], type=bool, default=True,
+            help="Whether to enable backwards-compatibility transitive includes when running the tests. This "
+                 "is provided to ensure that the trimmed-down version of libc++ does not bit-rot in between "
+                 "points at which we bulk-remove transitive includes.",
+            actions=lambda enabled: [] if enabled else [
+              AddFeature('transitive-includes-disabled'),
+              AddCompileFlag('-D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES')
+            ]),
+]
+
+DEFAULT_PARAMETERS += [
+  Parameter(name='use_system_cxx_lib', choices=[True, False], type=bool, default=False,
+            help="""
+    Whether the test suite is being *run* against the library shipped on the
+    target triple in use, as opposed to the trunk library.
+
+    When vendor-specific availability annotations are enabled, we add the
+    'use_system_cxx_lib' Lit feature to allow writing XFAIL or UNSUPPORTED
+    markup for tests that are known to fail on a particular triple.
+
+    That feature can be used to XFAIL a test that fails when deployed on (or is
+    compiled for) an older system. For example, if the test exhibits a bug in the
+    libc on a particular system version, or if the test uses a symbol that is not
+    available on an older version of the dylib, it can be marked as XFAIL with
+    the above feature.
+
+    It is sometimes useful to check that a test fails specifically when compiled
+    for a given deployment target. For example, this is the case when testing
+    availability markup, where we want to make sure that using the annotated
+    facility on a deployment target that doesn't support it will fail at compile
+    time, not at runtime. This can be achieved by creating a `.compile.pass.cpp`
+    and XFAILing it for the right deployment target. If the test doesn't fail at
+    compile-time like it's supposed to, the test will XPASS. Another option is to
+    create a `.verify.cpp` test that checks for the right errors, and mark that
+    test as requiring `use_system_cxx_lib && <target>`.
+    """,
+    actions=lambda useSystem: [
+      AddFeature('use_system_cxx_lib')
+    ] if useSystem else [
+      # If we're testing upstream libc++, disable availability markup,
+      # which is not relevant for non-shipped flavors of libc++.
+      AddCompileFlag('-D_LIBCPP_DISABLE_AVAILABILITY')
+    ])
+]
diff --git a/app/src/main/cpp/libcxx/utils/run.py b/app/src/main/cpp/libcxx/utils/run.py
new file mode 100644
index 0000000..bcb7b84
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/run.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+"""run.py is a utility for running a program.
+
+It can perform code signing, forward arguments to the program, and return the
+program's error code.
+"""
+
+import argparse
+import os
+import platform
+import subprocess
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--execdir', type=str, required=True)
+    parser.add_argument('--codesign_identity', type=str, required=False, default=None)
+    parser.add_argument('--env', type=str, nargs='*', required=False, default=dict())
+    parser.add_argument("command", nargs=argparse.ONE_OR_MORE)
+    args = parser.parse_args()
+    commandLine = args.command
+
+    # HACK:
+    # If an argument is a file that ends in `.tmp.exe`, assume it is the name
+    # of an executable generated by a test file. We call these test-executables
+    # below. This allows us to do custom processing like codesigning test-executables.
+    # It's also possible for there to be no such executable, for example in the case
+    # of a .sh.cpp test.
+    isTestExe = lambda exe: exe.endswith('.tmp.exe') and os.path.exists(exe)
+
+    # Do any necessary codesigning of test-executables found in the command line.
+    if args.codesign_identity:
+        for exe in filter(isTestExe, commandLine):
+            subprocess.check_call(['xcrun', 'codesign', '-f', '-s', args.codesign_identity, exe], env={})
+
+    # Extract environment variables into a dictionary
+    env = {k : v  for (k, v) in map(lambda s: s.split('=', 1), args.env)}
+    if platform.system() == 'Windows':
+        # Pass some extra variables through on Windows:
+        # COMSPEC is needed for running subprocesses via std::system().
+        if 'COMSPEC' in os.environ:
+            env['COMSPEC'] = os.environ.get('COMSPEC')
+        # TEMP is needed for placing temp files in a sensible directory.
+        if 'TEMP' in os.environ:
+            env['TEMP'] = os.environ.get('TEMP')
+
+    # Run the command line with the given environment in the execution directory.
+    return subprocess.call(commandLine, cwd=args.execdir, env=env, shell=False)
+
+
+if __name__ == '__main__':
+    exit(main())
diff --git a/app/src/main/cpp/libcxx/utils/ssh.py b/app/src/main/cpp/libcxx/utils/ssh.py
new file mode 100644
index 0000000..6c1d706
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/ssh.py
@@ -0,0 +1,125 @@
+#!/usr/bin/env python
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+
+"""
+Runs an executable on a remote host.
+
+This is meant to be used as an executor when running the C++ Standard Library
+conformance test suite.
+"""
+
+import argparse
+import os
+import posixpath
+import shlex
+import subprocess
+import sys
+import tarfile
+import tempfile
+
+from shlex import quote as cmd_quote
+
+def ssh(args, command):
+    cmd = ['ssh', '-oBatchMode=yes']
+    if args.extra_ssh_args is not None:
+        cmd.extend(shlex.split(args.extra_ssh_args))
+    return cmd + [args.host, command]
+
+
+def scp(args, src, dst):
+    cmd = ['scp', '-q', '-oBatchMode=yes']
+    if args.extra_scp_args is not None:
+        cmd.extend(shlex.split(args.extra_scp_args))
+    return cmd + [src, '{}:{}'.format(args.host, dst)]
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--host', type=str, required=True)
+    parser.add_argument('--execdir', type=str, required=True)
+    parser.add_argument('--tempdir', type=str, required=False, default='/tmp')
+    parser.add_argument('--extra-ssh-args', type=str, required=False)
+    parser.add_argument('--extra-scp-args', type=str, required=False)
+    parser.add_argument('--codesign_identity', type=str, required=False, default=None)
+    parser.add_argument('--env', type=str, nargs='*', required=False, default=dict())
+    parser.add_argument("command", nargs=argparse.ONE_OR_MORE)
+    args = parser.parse_args()
+    commandLine = args.command
+
+    # Create a temporary directory where the test will be run.
+    # That is effectively the value of %T on the remote host.
+    tmp = subprocess.check_output(ssh(args, 'mktemp -d {}/libcxx.XXXXXXXXXX'.format(args.tempdir)), universal_newlines=True).strip()
+
+    # HACK:
+    # If an argument is a file that ends in `.tmp.exe`, assume it is the name
+    # of an executable generated by a test file. We call these test-executables
+    # below. This allows us to do custom processing like codesigning test-executables
+    # and changing their path when running on the remote host. It's also possible
+    # for there to be no such executable, for example in the case of a .sh.cpp
+    # test.
+    isTestExe = lambda exe: exe.endswith('.tmp.exe') and os.path.exists(exe)
+    pathOnRemote = lambda file: posixpath.join(tmp, os.path.basename(file))
+
+    try:
+        # Do any necessary codesigning of test-executables found in the command line.
+        if args.codesign_identity:
+            for exe in filter(isTestExe, commandLine):
+                subprocess.check_call(['xcrun', 'codesign', '-f', '-s', args.codesign_identity, exe], env={})
+
+        # tar up the execution directory (which contains everything that's needed
+        # to run the test), and copy the tarball over to the remote host.
+        try:
+            tmpTar = tempfile.NamedTemporaryFile(suffix='.tar', delete=False)
+            with tarfile.open(fileobj=tmpTar, mode='w') as tarball:
+                tarball.add(args.execdir, arcname=os.path.basename(args.execdir))
+
+            # Make sure we close the file before we scp it, because accessing
+            # the temporary file while still open doesn't work on Windows.
+            tmpTar.close()
+            remoteTarball = pathOnRemote(tmpTar.name)
+            subprocess.check_call(scp(args, tmpTar.name, remoteTarball))
+        finally:
+            # Make sure we close the file in case an exception happens before
+            # we've closed it above -- otherwise close() is idempotent.
+            tmpTar.close()
+            os.remove(tmpTar.name)
+
+        # Untar the dependencies in the temporary directory and remove the tarball.
+        remoteCommands = [
+            'tar -xf {} -C {} --strip-components 1'.format(remoteTarball, tmp),
+            'rm {}'.format(remoteTarball)
+        ]
+
+        # Make sure all test-executables in the remote command line have 'execute'
+        # permissions on the remote host. The host that compiled the test-executable
+        # might not have a notion of 'executable' permissions.
+        for exe in map(pathOnRemote, filter(isTestExe, commandLine)):
+            remoteCommands.append('chmod +x {}'.format(exe))
+
+        # Execute the command through SSH in the temporary directory, with the
+        # correct environment. We tweak the command line to run it on the remote
+        # host by transforming the path of test-executables to their path in the
+        # temporary directory on the remote host.
+        commandLine = (pathOnRemote(x) if isTestExe(x) else x for x in commandLine)
+        remoteCommands.append('cd {}'.format(tmp))
+        if args.env:
+            remoteCommands.append('export {}'.format(cmd_quote(' '.join(args.env))))
+        remoteCommands.append(subprocess.list2cmdline(commandLine))
+
+        # Finally, SSH to the remote host and execute all the commands.
+        rc = subprocess.call(ssh(args, ' && '.join(remoteCommands)))
+        return rc
+
+    finally:
+        # Make sure the temporary directory is removed when we're done.
+        subprocess.check_call(ssh(args, 'rm -r {}'.format(tmp)))
+
+
+if __name__ == '__main__':
+    exit(main())
diff --git a/app/src/main/cpp/libcxx/utils/sym_diff.py b/app/src/main/cpp/libcxx/utils/sym_diff.py
new file mode 100644
index 0000000..6bd1b57
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/sym_diff.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+#===----------------------------------------------------------------------===##
+#
+# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+# See https://llvm.org/LICENSE.txt for license information.
+# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+#
+#===----------------------------------------------------------------------===##
+"""
+sym_diff - Compare two symbol lists and output the differences.
+"""
+
+from argparse import ArgumentParser
+import sys
+from libcxx.sym_check import diff, util
+
+
+def main():
+    parser = ArgumentParser(
+        description='Extract a list of symbols from a shared library.')
+    parser.add_argument(
+        '--names-only', dest='names_only',
+        help='Only print symbol names',
+        action='store_true', default=False)
+    parser.add_argument(
+        '--removed-only', dest='removed_only',
+        help='Only print removed symbols',
+        action='store_true', default=False)
+    parser.add_argument('--only-stdlib-symbols', dest='only_stdlib',
+                        help="Filter all symbols not related to the stdlib",
+                        action='store_true', default=False)
+    parser.add_argument('--strict', dest='strict',
+                        help="Exit with a non-zero status if any symbols "
+                             "differ",
+                        action='store_true', default=False)
+    parser.add_argument(
+        '-o', '--output', dest='output',
+        help='The output file. stdout is used if not given',
+        type=str, action='store', default=None)
+    parser.add_argument(
+        '--demangle', dest='demangle', action='store_true', default=False)
+    parser.add_argument(
+        'old_syms', metavar='old-syms', type=str,
+        help='The file containing the old symbol list or a library')
+    parser.add_argument(
+        'new_syms', metavar='new-syms', type=str,
+        help='The file containing the new symbol list or a library')
+    args = parser.parse_args()
+
+    old_syms_list = util.extract_or_load(args.old_syms)
+    new_syms_list = util.extract_or_load(args.new_syms)
+
+    if args.only_stdlib:
+        old_syms_list, _ = util.filter_stdlib_symbols(old_syms_list)
+        new_syms_list, _ = util.filter_stdlib_symbols(new_syms_list)
+
+    added, removed, changed = diff.diff(old_syms_list, new_syms_list)
+    if args.removed_only:
+        added = {}
+    report, is_break, is_different = diff.report_diff(
+        added, removed, changed, names_only=args.names_only,
+        demangle=args.demangle)
+    if args.output is None:
+        print(report)
+    else:
+        with open(args.output, 'w') as f:
+            f.write(report + '\n')
+    exit_code = 1 if is_break or (args.strict and is_different) else 0
+    sys.exit(exit_code)
+
+if __name__ == '__main__':
+    main()
diff --git a/app/src/main/cpp/libcxx/utils/symcheck-blacklists/linux_blacklist.txt b/app/src/main/cpp/libcxx/utils/symcheck-blacklists/linux_blacklist.txt
new file mode 100644
index 0000000..4d9d1d4
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/symcheck-blacklists/linux_blacklist.txt
@@ -0,0 +1,19 @@
+# all guard variables
+_ZGVNSt3__
+# all vtables
+_ZTV
+# all VTT
+_ZTT
+# all non-virtual thunks
+_ZTh
+# all virtual thunks
+_ZTv
+# typeinfo for std::__1::__types
+#    There are no std::__types
+_ZTINSt3__1[0-9][0-9]*__
+# typeinfo name for std::__1::__types
+_ZTSNSt3__1[0-9][0-9]*__
+# anything using __hidden_allocator
+.*__hidden_allocator
+# anything using __sso_allocator
+.*__sso_allocator
diff --git a/app/src/main/cpp/libcxx/utils/symcheck-blacklists/osx_blacklist.txt b/app/src/main/cpp/libcxx/utils/symcheck-blacklists/osx_blacklist.txt
new file mode 100644
index 0000000..cfa911e
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/symcheck-blacklists/osx_blacklist.txt
@@ -0,0 +1,19 @@
+# all guard variables
+__ZGVNSt3__
+# all vtables
+__ZTV
+# all VTT
+__ZTT
+# all non-virtual thunks
+__ZTh
+# all virtual thunks
+__ZTv
+# typeinfo for std::__1::__types
+#    There are no std::__types
+__ZTINSt3__1[0-9][0-9]*__
+# typeinfo name for std::__1::__types
+__ZTSNSt3__1[0-9][0-9]*__
+# anything using __hidden_allocator
+.*__hidden_allocator
+# anything using __sso_allocator
+.*__sso_allocator
diff --git a/app/src/main/cpp/libcxx/utils/zos_rename_dll_side_deck.sh b/app/src/main/cpp/libcxx/utils/zos_rename_dll_side_deck.sh
new file mode 100644
index 0000000..adab79f
--- /dev/null
+++ b/app/src/main/cpp/libcxx/utils/zos_rename_dll_side_deck.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+#
+# Script to rename DLL name within side deck.
+#
+
+# Stops execution if a command or pipeline has an error.
+set -e
+
+sidedeck=$1
+old_dll_name=$2
+new_dll_name=$3
+
+function error() {
+  printf "ERROR: %s\n" "$*"
+  exit 1
+}
+
+function usage() {
+cat <<EOF
+Usage: $(basename $0) <side deck file> <old dll name> <new dll name>:
+          [-h|--help] Display this help and exit.
+EOF
+}
+
+rename_dll_name_inside_side_deck() {
+
+if [[ -z "$sidedeck" || -z "$old_dll_name" || -z "$new_dll_name" ]]; then
+  usage
+  error "All 3 parameters must be specified."
+fi
+
+[[ -f "$sidedeck" ]] || error "The '$sidedeck' file must exists."
+
+old_len=${#old_dll_name}
+new_len=${#new_dll_name}
+
+if (( $new_len > $old_len )); then
+  error "New DLL name $new_dll_name must have $old_len characters or less."
+fi
+
+if ((padding_len=$old_len-$new_len )); then
+  pad=$(printf "%*s" $padding_len "")
+fi
+
+# Touch the temp. file and set the tag to 1047 first so the redirecting statement
+# will write in 1047 and not 819 encoding.
+touch $sidedeck.tmp; chtag -tc1047 $sidedeck.tmp
+sed "/ IMPORT /s/'$old_dll_name/$pad'$new_dll_name/g" $sidedeck > $sidedeck.tmp
+mv $sidedeck.tmp $sidedeck
+}
+
+function main() {
+  rename_dll_name_inside_side_deck
+}
+
+main "$@"
+
diff --git a/app/src/main/cpp/libcxx/x86/libcxx.a b/app/src/main/cpp/libcxx/x86/libcxx.a
deleted file mode 100644
index 52d809312d6fc1de2e423672f0f701c2e74eae9c..0000000000000000000000000000000000000000
GIT binary patch
literal 0
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diff --git a/app/src/main/cpp/main.cpp b/app/src/main/cpp/main.cpp
index 0352f0a..8dd9289 100644
--- a/app/src/main/cpp/main.cpp
+++ b/app/src/main/cpp/main.cpp
@@ -1,24 +1,52 @@
 #include <android/log.h>
 #include <unistd.h>
+#include <map>
+#include <fstream>
 #include "zygisk.hpp"
-#include "dobby.h"
+#include "shadowhook.h"
 #include "json.hpp"
 
-#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, "PIF/Native", __VA_ARGS__)
+#define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, "PIF", __VA_ARGS__)
 
 #define CLASSES_DEX "/data/adb/modules/playintegrityfix/classes.dex"
 
 #define PIF_JSON "/data/adb/pif.json"
 
+static JavaVM *jvm = nullptr;
+
+static jclass entryPointClass = nullptr;
+
+static jmethodID spoofFieldsMethod = nullptr;
+
+static void spoofFields() {
+
+    JNIEnv *env;
+    jvm->GetEnv(reinterpret_cast<void **>(&env), JNI_VERSION_1_6);
+
+    if (env != nullptr && entryPointClass != nullptr && spoofFieldsMethod != nullptr) {
+
+        env->CallStaticVoidMethod(entryPointClass, spoofFieldsMethod);
+
+        LOGD("[Zygisk] Call Java spoofFields!");
+    }
+
+    if (env->ExceptionCheck()) {
+        env->ExceptionDescribe();
+        env->ExceptionClear();
+    }
+}
+
 static std::string FIRST_API_LEVEL, SECURITY_PATCH, BUILD_ID;
 
 typedef void (*T_Callback)(void *, const char *, const char *, uint32_t);
 
-static T_Callback o_callback = nullptr;
+static std::map<void *, T_Callback> callbacks;
 
 static void modify_callback(void *cookie, const char *name, const char *value, uint32_t serial) {
 
-    if (cookie == nullptr || name == nullptr || value == nullptr || o_callback == nullptr) return;
+    if (cookie == nullptr || name == nullptr || value == nullptr ||
+        !callbacks.contains(cookie))
+        return;
 
     std::string_view prop(name);
 
@@ -46,15 +74,16 @@ static void modify_callback(void *cookie, const char *name, const char *value, u
     } else if (prop == "sys.usb.state") {
 
         value = "none";
-
     }
 
+    if (prop == "ro.product.first_api_level") spoofFields();
+
     if (!prop.starts_with("debug") && !prop.starts_with("cache") && !prop.starts_with("persist")) {
 
         LOGD("[%s] -> %s", name, value);
     }
 
-    return o_callback(cookie, name, value, serial);
+    return callbacks[cookie](cookie, name, value, serial);
 }
 
 static void (*o_system_property_read_callback)(const void *, T_Callback, void *);
@@ -64,22 +93,19 @@ my_system_property_read_callback(const void *pi, T_Callback callback, void *cook
     if (pi == nullptr || callback == nullptr || cookie == nullptr) {
         return o_system_property_read_callback(pi, callback, cookie);
     }
-    o_callback = callback;
+    callbacks[cookie] = callback;
     return o_system_property_read_callback(pi, modify_callback, cookie);
 }
 
 static void doHook() {
-    void *handle = DobbySymbolResolver("libc.so", "__system_property_read_callback");
+    void *handle = shadowhook_hook_sym_name("libc.so", "__system_property_read_callback",
+                                            reinterpret_cast<void *>(my_system_property_read_callback),
+                                            reinterpret_cast<void **>(&o_system_property_read_callback));
     if (handle == nullptr) {
         LOGD("Couldn't find '__system_property_read_callback' handle. Report to @chiteroman");
         return;
     }
     LOGD("Found '__system_property_read_callback' handle at %p", handle);
-    DobbyHook(
-            handle,
-            (dobby_dummy_func_t) my_system_property_read_callback,
-            (dobby_dummy_func_t *) &o_system_property_read_callback
-    );
 }
 
 class PlayIntegrityFix : public zygisk::ModuleBase {
@@ -87,56 +113,95 @@ public:
     void onLoad(zygisk::Api *api, JNIEnv *env) override {
         this->api = api;
         this->env = env;
+        env->GetJavaVM(&jvm);
     }
 
     void preAppSpecialize(zygisk::AppSpecializeArgs *args) override {
 
-        auto name = env->GetStringUTFChars(args->nice_name, nullptr);
+        auto rawProcess = env->GetStringUTFChars(args->nice_name, nullptr);
+        auto rawDir = env->GetStringUTFChars(args->app_data_dir, nullptr);
 
-        bool isGms = memcmp(name, "com.google.android.gms", 22) == 0;
-        bool isGmsUnstable = memcmp(name, "com.google.android.gms.unstable", 31) == 0;
+        std::string_view process(rawProcess);
+        std::string_view dir(rawDir);
 
-        env->ReleaseStringUTFChars(args->nice_name, name);
+        bool isGms = dir.ends_with("/com.google.android.gms");
+        bool isGmsUnstable = process == "com.google.android.gms.unstable";
 
-        if (isGms) api->setOption(zygisk::FORCE_DENYLIST_UNMOUNT);
+        env->ReleaseStringUTFChars(args->nice_name, rawProcess);
+        env->ReleaseStringUTFChars(args->app_data_dir, rawDir);
 
-        if (isGmsUnstable) {
-            long dexSize = 0, jsonSize = 0;
-
-            int fd = api->connectCompanion();
-
-            read(fd, &dexSize, sizeof(long));
-            read(fd, &jsonSize, sizeof(long));
-
-            LOGD("Dex file size: %ld", dexSize);
-            LOGD("Json file size: %ld", jsonSize);
-
-            vector.resize(dexSize);
-            read(fd, vector.data(), dexSize);
-
-            std::vector<char> jsonVector(jsonSize);
-            read(fd, jsonVector.data(), jsonSize);
-
-            close(fd);
-
-            std::string_view jsonStr(jsonVector.cbegin(), jsonVector.cend());
-            json = nlohmann::json::parse(jsonStr, nullptr, false, true);
-
-            parseJson();
-
-            return; // We can't dlclose lib because of the hook
+        if (!isGms) {
+            api->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
+            return;
         }
 
-        api->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
+        api->setOption(zygisk::FORCE_DENYLIST_UNMOUNT);
+
+        if (!isGmsUnstable) {
+            api->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
+            return;
+        }
+
+        long dexSize = 0, jsonSize = 0;
+
+        int fd = api->connectCompanion();
+
+        read(fd, &dexSize, sizeof(long));
+        read(fd, &jsonSize, sizeof(long));
+
+        LOGD("Dex file size: %ld", dexSize);
+        LOGD("Json file size: %ld", jsonSize);
+
+        if (dexSize > 0) {
+            vector.resize(dexSize);
+            read(fd, vector.data(), dexSize);
+        } else {
+            close(fd);
+            LOGD("Dex file empty!");
+            api->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
+            return;
+        }
+
+        std::vector<char> jsonVector;
+        if (jsonSize > 0) {
+            jsonVector.resize(jsonSize);
+            read(fd, jsonVector.data(), jsonSize);
+        } else {
+            close(fd);
+            LOGD("Json file empty!");
+            api->setOption(zygisk::DLCLOSE_MODULE_LIBRARY);
+            return;
+        }
+
+        close(fd);
+
+        std::string_view jsonStr(jsonVector.cbegin(), jsonVector.cend());
+        json = nlohmann::json::parse(jsonStr, nullptr, false, true);
+
+        parseJson();
     }
 
     void postAppSpecialize(const zygisk::AppSpecializeArgs *args) override {
         if (vector.empty() || json.empty()) return;
 
-        doHook();
+        shadowhook_init(SHADOWHOOK_MODE_UNIQUE, true);
+
+        LOGD("JSON keys: %d", static_cast<int>(json.size()));
+
+        if (!json.contains("PRODUCT") ||
+            !json.contains("DEVICE") ||
+            !json.contains("MANUFACTURER") ||
+            !json.contains("BRAND") ||
+            !json.contains("MODEL") ||
+            !json.contains("FINGERPRINT")) {
+            LOGD("JSON doesn't contain important fields to spoof!");
+            return;
+        }
 
         injectDex();
 
+        doHook();
+
         vector.clear();
         json.clear();
     }
@@ -171,12 +236,14 @@ private:
         auto entryClassName = env->NewStringUTF("es.chiteroman.playintegrityfix.EntryPoint");
         auto entryClassObj = env->CallObjectMethod(dexCl, loadClass, entryClassName);
 
-        auto entryClass = (jclass) entryClassObj;
+        entryPointClass = (jclass) entryClassObj;
 
         LOGD("call init");
-        auto entryInit = env->GetStaticMethodID(entryClass, "init", "(Ljava/lang/String;)V");
+        auto entryInit = env->GetStaticMethodID(entryPointClass, "init", "(Ljava/lang/String;)V");
         auto str = env->NewStringUTF(json.dump().c_str());
-        env->CallStaticVoidMethod(entryClass, entryInit, str);
+        env->CallStaticVoidMethod(entryPointClass, entryInit, str);
+
+        spoofFieldsMethod = env->GetStaticMethodID(entryPointClass, "spoofFields", "()V");
     }
 
     void parseJson() {
@@ -232,36 +299,17 @@ private:
 };
 
 static void companion(int fd) {
-    long dexSize = 0, jsonSize = 0;
-    std::vector<char> dexVector, jsonVector;
 
-    FILE *dexFile = fopen(CLASSES_DEX, "rb");
+    std::ifstream dexFile(CLASSES_DEX, std::ios::binary);
+    std::ifstream jsonFile(PIF_JSON);
 
-    if (dexFile) {
+    std::vector<char> dexVector((std::istreambuf_iterator<char>(dexFile)),
+                                std::istreambuf_iterator<char>());
+    std::vector<char> jsonVector((std::istreambuf_iterator<char>(jsonFile)),
+                                 std::istreambuf_iterator<char>());
 
-        fseek(dexFile, 0, SEEK_END);
-        dexSize = ftell(dexFile);
-        fseek(dexFile, 0, SEEK_SET);
-
-        dexVector.resize(dexSize);
-        fread(dexVector.data(), 1, dexSize, dexFile);
-
-        fclose(dexFile);
-    }
-
-    FILE *jsonFile = fopen(PIF_JSON, "r");
-
-    if (jsonFile) {
-
-        fseek(jsonFile, 0, SEEK_END);
-        jsonSize = ftell(jsonFile);
-        fseek(jsonFile, 0, SEEK_SET);
-
-        jsonVector.resize(jsonSize);
-        fread(jsonVector.data(), 1, jsonSize, jsonFile);
-
-        fclose(jsonFile);
-    }
+    long dexSize = dexVector.size();
+    long jsonSize = jsonVector.size();
 
     write(fd, &dexSize, sizeof(long));
     write(fd, &jsonSize, sizeof(long));
@@ -272,4 +320,4 @@ static void companion(int fd) {
 
 REGISTER_ZYGISK_MODULE(PlayIntegrityFix)
 
-REGISTER_ZYGISK_COMPANION(companion)
+REGISTER_ZYGISK_COMPANION(companion)
\ No newline at end of file
diff --git a/app/src/main/cpp/shadowhook/CMakeLists.txt b/app/src/main/cpp/shadowhook/CMakeLists.txt
new file mode 100644
index 0000000..8f3b586
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/CMakeLists.txt
@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.22.1)
+project(shadowhook)
+
+if(${ANDROID_ABI} STREQUAL "arm64-v8a")
+    set(ARCH "arm64")
+elseif(${ANDROID_ABI} STREQUAL "armeabi-v7a")
+    set(ARCH "arm")
+endif()
+
+set(TARGET "shadowhook")
+file(GLOB SRC *.c arch/${ARCH}/*.c common/*.c third_party/*/*.c)
+add_library(${TARGET} SHARED ${SRC})
+target_compile_features(${TARGET} PUBLIC c_std_17)
+target_compile_options(${TARGET} PUBLIC -std=c17 -Weverything -Werror)
+target_include_directories(${TARGET} PUBLIC . include arch/${ARCH} common third_party/xdl third_party/bsd third_party/lss)
+target_link_libraries(${TARGET} log)
+
+if(USEASAN)
+    target_compile_options(${TARGET} PUBLIC -fsanitize=address -fno-omit-frame-pointer)
+    target_link_options(${TARGET} PUBLIC -fsanitize=address)
+else()
+    target_compile_options(${TARGET} PUBLIC -Oz -ffunction-sections -fdata-sections)
+    target_link_options(${TARGET} PUBLIC -Oz -Wl,--exclude-libs,ALL -Wl,--gc-sections -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/shadowhook.map.txt)
+endif()
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_a32.c b/app/src/main/cpp/shadowhook/arch/arm/sh_a32.c
new file mode 100644
index 0000000..d71e4f8
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_a32.c
@@ -0,0 +1,446 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_a32.h"
+
+#include <inttypes.h>
+#include <sh_util.h>
+#include <stdint.h>
+
+#include "sh_log.h"
+
+// https://developer.arm.com/documentation/ddi0406/latest
+// https://developer.arm.com/documentation/ddi0597/latest
+
+typedef enum {
+  IGNORED = 0,
+  B_A1,
+  BX_A1,
+  BL_IMM_A1,
+  BLX_IMM_A2,
+  ADD_REG_A1,
+  ADD_REG_PC_A1,
+  SUB_REG_A1,
+  SUB_REG_PC_A1,
+  ADR_A1,
+  ADR_A2,
+  MOV_REG_A1,
+  MOV_REG_PC_A1,
+  LDR_LIT_A1,
+  LDR_LIT_PC_A1,
+  LDRB_LIT_A1,
+  LDRD_LIT_A1,
+  LDRH_LIT_A1,
+  LDRSB_LIT_A1,
+  LDRSH_LIT_A1,
+  LDR_REG_A1,
+  LDR_REG_PC_A1,
+  LDRB_REG_A1,
+  LDRD_REG_A1,
+  LDRH_REG_A1,
+  LDRSB_REG_A1,
+  LDRSH_REG_A1
+} sh_a32_type_t;
+
+static sh_a32_type_t sh_a32_get_type(uint32_t inst) {
+  if (((inst & 0x0F000000u) == 0x0A000000) && ((inst & 0xF0000000) != 0xF0000000))
+    return B_A1;
+  else if (((inst & 0x0FFFFFFFu) == 0x012FFF1F) && ((inst & 0xF0000000) != 0xF0000000))
+    return BX_A1;
+  else if (((inst & 0x0F000000u) == 0x0B000000) && ((inst & 0xF0000000) != 0xF0000000))
+    return BL_IMM_A1;
+  else if ((inst & 0xFE000000) == 0xFA000000)
+    return BLX_IMM_A2;
+  else if (((inst & 0x0FE00010u) == 0x00800000) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x0010F000u) != 0x0010F000) && ((inst & 0x000F0000u) != 0x000D0000) &&
+           (((inst & 0x000F0000u) == 0x000F0000) || ((inst & 0x0000000Fu) == 0x0000000F)))
+    return ((inst & 0x0000F000u) == 0x0000F000) ? ADD_REG_PC_A1 : ADD_REG_A1;
+  else if (((inst & 0x0FE00010u) == 0x00400000) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x0010F000u) != 0x0010F000) && ((inst & 0x000F0000u) != 0x000D0000) &&
+           (((inst & 0x000F0000u) == 0x000F0000) || ((inst & 0x0000000Fu) == 0x0000000F)))
+    return ((inst & 0x0000F000u) == 0x0000F000) ? SUB_REG_PC_A1 : SUB_REG_A1;
+  else if (((inst & 0x0FFF0000u) == 0x028F0000) && ((inst & 0xF0000000) != 0xF0000000))
+    return ADR_A1;
+  else if (((inst & 0x0FFF0000u) == 0x024F0000) && ((inst & 0xF0000000) != 0xF0000000))
+    return ADR_A2;
+  else if (((inst & 0x0FEF001Fu) == 0x01A0000F) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x0010F000u) != 0x0010F000) &&
+           (!(((inst & 0x0000F000u) == 0x0000F000) && ((inst & 0x00000FF0u) != 0x00000000))))
+    return ((inst & 0x0000F000u) == 0x0000F000) ? MOV_REG_PC_A1 : MOV_REG_A1;
+  else if (((inst & 0x0F7F0000u) == 0x051F0000) && ((inst & 0xF0000000) != 0xF0000000))
+    return ((inst & 0x0000F000u) == 0x0000F000) ? LDR_LIT_PC_A1 : LDR_LIT_A1;
+  else if (((inst & 0x0F7F0000u) == 0x055F0000) && ((inst & 0xF0000000) != 0xF0000000))
+    return LDRB_LIT_A1;
+  else if (((inst & 0x0F7F00F0u) == 0x014F00D0) && ((inst & 0xF0000000) != 0xF0000000))
+    return LDRD_LIT_A1;
+  else if (((inst & 0x0F7F00F0u) == 0x015F00B0) && ((inst & 0xF0000000) != 0xF0000000))
+    return LDRH_LIT_A1;
+  else if (((inst & 0x0F7F00F0u) == 0x015F00D0) && ((inst & 0xF0000000) != 0xF0000000))
+    return LDRSB_LIT_A1;
+  else if (((inst & 0x0F7F00F0u) == 0x015F00F0) && ((inst & 0xF0000000) != 0xF0000000))
+    return LDRSH_LIT_A1;
+  else if (((inst & 0x0E5F0010u) == 0x061F0000) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x01200000u) != 0x00200000))
+    return ((inst & 0x0000F000u) == 0x0000F000) ? LDR_REG_PC_A1 : LDR_REG_A1;
+  else if (((inst & 0x0E5F0010u) == 0x065F0000) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x01200000u) != 0x00200000))
+    return LDRB_REG_A1;
+  else if (((inst & 0x0E5F0FF0u) == 0x000F00D0) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x01200000u) != 0x00200000))
+    return LDRD_REG_A1;
+  else if (((inst & 0x0E5F0FF0u) == 0x001F00B0) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x01200000u) != 0x00200000))
+    return LDRH_REG_A1;
+  else if (((inst & 0x0E5F0FF0u) == 0x001F00D0) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x01200000u) != 0x00200000))
+    return LDRSB_REG_A1;
+  else if (((inst & 0x0E5F0FF0u) == 0x001F00F0) && ((inst & 0xF0000000) != 0xF0000000) &&
+           ((inst & 0x01200000u) != 0x00200000))
+    return LDRSH_REG_A1;
+  else
+    return IGNORED;
+}
+
+size_t sh_a32_get_rewrite_inst_len(uint32_t inst) {
+  static uint8_t map[] = {
+      4,   // IGNORED
+      12,  // B_A1
+      12,  // BX_A1
+      16,  // BL_IMM_A1
+      16,  // BLX_IMM_A2
+      32,  // ADD_REG_A1
+      32,  // ADD_REG_PC_A1
+      32,  // SUB_REG_A1
+      32,  // SUB_REG_PC_A1
+      12,  // ADR_A1
+      12,  // ADR_A2
+      32,  // MOV_REG_A1
+      12,  // MOV_REG_PC_A1
+      24,  // LDR_LIT_A1
+      36,  // LDR_LIT_PC_A1
+      24,  // LDRB_LIT_A1
+      24,  // LDRD_LIT_A1
+      24,  // LDRH_LIT_A1
+      24,  // LDRSB_LIT_A1
+      24,  // LDRSH_LIT_A1
+      32,  // LDR_REG_A1
+      36,  // LDR_REG_PC_A1
+      32,  // LDRB_REG_A1
+      32,  // LDRD_REG_A1
+      32,  // LDRH_REG_A1
+      32,  // LDRSB_REG_A1
+      32   // LDRSH_REG_A1
+  };
+
+  return (size_t)(map[sh_a32_get_type(inst)]);
+}
+
+static bool sh_a32_is_addr_need_fix(uintptr_t addr, sh_a32_rewrite_info_t *rinfo) {
+  return (rinfo->overwrite_start_addr <= addr && addr < rinfo->overwrite_end_addr);
+}
+
+static uintptr_t sh_a32_fix_addr(uintptr_t addr, sh_a32_rewrite_info_t *rinfo) {
+  if (rinfo->overwrite_start_addr <= addr && addr < rinfo->overwrite_end_addr) {
+    uintptr_t cursor_addr = rinfo->overwrite_start_addr;
+    size_t offset = 0;
+    for (size_t i = 0; i < rinfo->rewrite_inst_lens_cnt; i++) {
+      if (cursor_addr >= addr) break;
+      cursor_addr += 4;
+      offset += rinfo->rewrite_inst_lens[i];
+    }
+    uintptr_t fixed_addr = (uintptr_t)rinfo->rewrite_buf + offset;
+    SH_LOG_INFO("a32 rewrite: fix addr %" PRIxPTR " -> %" PRIxPTR, addr, fixed_addr);
+    return fixed_addr;
+  }
+
+  return addr;
+}
+
+static size_t sh_a32_rewrite_b(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a32_type_t type,
+                               sh_a32_rewrite_info_t *rinfo) {
+  uint32_t cond;
+  if (type == B_A1 || type == BL_IMM_A1 || type == BX_A1)
+    cond = SH_UTIL_GET_BITS_32(inst, 31, 28);
+  else
+    // type == BLX_IMM_A2
+    cond = 0xE;  // 1110 None (AL)
+
+  uint32_t addr;
+  if (type == B_A1 || type == BL_IMM_A1) {
+    uint32_t imm24 = SH_UTIL_GET_BITS_32(inst, 23, 0);
+    uint32_t imm32 = SH_UTIL_SIGN_EXTEND_32(imm24 << 2u, 26u);
+    addr = pc + imm32;  // arm -> arm
+  } else if (type == BLX_IMM_A2) {
+    uint32_t h = SH_UTIL_GET_BIT_32(inst, 24);
+    uint32_t imm24 = SH_UTIL_GET_BITS_32(inst, 23, 0);
+    uint32_t imm32 = SH_UTIL_SIGN_EXTEND_32((imm24 << 2u) | (h << 1u), 26u);
+    addr = SH_UTIL_SET_BIT0(pc + imm32);  // arm -> thumb
+  } else {
+    // type == BX_A1
+    // BX PC
+    // PC must be even, and the "arm" instruction must be at a 4-byte aligned address,
+    // so the instruction set must keep "arm" unchanged.
+    addr = pc;  // arm -> arm
+  }
+  addr = sh_a32_fix_addr(addr, rinfo);
+
+  size_t idx = 0;
+  if (type == BL_IMM_A1 || type == BLX_IMM_A2) {
+    buf[idx++] = 0x028FE008u | (cond << 28u);  // ADD<c> LR, PC, #8
+  }
+  buf[idx++] = 0x059FF000u | (cond << 28u);  // LDR<c> PC, [PC, #0]
+  buf[idx++] = 0xEA000000;                   // B #0
+  buf[idx++] = addr;
+  return idx * 4;  // 12 or 16
+}
+
+static size_t sh_a32_rewrite_add_or_sub(uint32_t *buf, uint32_t inst, uintptr_t pc) {
+  // ADD{S}<c> <Rd>, <Rn>, PC{, <shift>}  or  ADD{S}<c> <Rd>, PC, <Rm>{, <shift>}
+  // SUB{S}<c> <Rd>, <Rn>, PC{, <shift>}  or  SUB{S}<c> <Rd>, PC, <Rm>{, <shift>}
+  uint32_t cond = SH_UTIL_GET_BITS_32(inst, 31, 28);
+  uint32_t rn = SH_UTIL_GET_BITS_32(inst, 19, 16);
+  uint32_t rm = SH_UTIL_GET_BITS_32(inst, 3, 0);
+  uint32_t rd = SH_UTIL_GET_BITS_32(inst, 15, 12);
+
+  uint32_t rx;  // r0 - r3
+  for (rx = 3;; --rx)
+    if (rx != rn && rx != rm && rx != rd) break;
+
+  if (rd == 0xF)  // Rd == PC
+  {
+    uint32_t ry;  // r0 - r4
+    for (ry = 4;; --ry)
+      if (ry != rn && ry != rm && ry != rd && ry != rx) break;
+
+    buf[0] = 0x0A000000u | (cond << 28u);           // B<c> #0
+    buf[1] = 0xEA000005;                            // B #20
+    buf[2] = 0xE92D8000 | (1u << rx) | (1u << ry);  // PUSH {Rx, Ry, PC}
+    buf[3] = 0xE59F0008 | (rx << 12u);              // LDR Rx, [PC, #8]
+    if (rn == 0xF)
+      // Rn == PC
+      buf[4] =
+          (inst & 0x0FF00FFFu) | 0xE0000000 | (ry << 12u) | (rx << 16u);  // ADD/SUB Ry, Rx, Rm{, <shift>}
+    else
+      // Rm == PC
+      buf[4] = (inst & 0x0FFF0FF0u) | 0xE0000000 | (ry << 12u) | rx;  // ADD/SUB Ry, Rn, Rx{, <shift>}
+    buf[5] = 0xE58D0008 | (ry << 12u);                                // STR Ry, [SP, #8]
+    buf[6] = 0xE8BD8000 | (1u << rx) | (1u << ry);                    // POP {Rx, Ry, PC}
+    buf[7] = pc;
+    return 32;
+  } else {
+    buf[0] = 0x0A000000u | (cond << 28u);  // B<c> #0
+    buf[1] = 0xEA000005;                   // B #20
+    buf[2] = 0xE52D0004 | (rx << 12u);     // PUSH {Rx}
+    buf[3] = 0xE59F0008 | (rx << 12u);     // LDR Rx, [PC, #8]
+    if (rn == 0xF)
+      // Rn == PC
+      buf[4] = (inst & 0x0FF0FFFFu) | 0xE0000000 | (rx << 16u);  // ADD/SUB{S} Rd, Rx, Rm{, <shift>}
+    else
+      // Rm == PC
+      buf[4] = (inst & 0x0FFFFFF0u) | 0xE0000000 | rx;  // ADD/SUB{S} Rd, Rn, Rx{, <shift>}
+    buf[5] = 0xE49D0004 | (rx << 12u);                  // POP {Rx}
+    buf[6] = 0xEA000000;                                // B #0
+    buf[7] = pc;
+    return 32;
+  }
+}
+
+static size_t sh_a32_rewrite_adr(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a32_type_t type,
+                                 sh_a32_rewrite_info_t *rinfo) {
+  uint32_t cond = SH_UTIL_GET_BITS_32(inst, 31, 28);
+  uint32_t rd = SH_UTIL_GET_BITS_32(inst, 15, 12);  // r0 - r15
+  uint32_t imm12 = SH_UTIL_GET_BITS_32(inst, 11, 0);
+  uint32_t imm32 = sh_util_arm_expand_imm(imm12);
+  uint32_t addr = (type == ADR_A1 ? (SH_UTIL_ALIGN_4(pc) + imm32) : (SH_UTIL_ALIGN_4(pc) - imm32));
+  if (sh_a32_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  buf[0] = 0x059F0000u | (cond << 28u) | (rd << 12u);  // LDR<c> Rd, [PC, #0]
+  buf[1] = 0xEA000000;                                 // B #0
+  buf[2] = addr;
+  return 12;
+}
+
+static size_t sh_a32_rewrite_mov(uint32_t *buf, uint32_t inst, uintptr_t pc) {
+  // MOV{S}<c> <Rd>, PC
+  uint32_t cond = SH_UTIL_GET_BITS_32(inst, 31, 28);
+  uint32_t rd = SH_UTIL_GET_BITS_32(inst, 15, 12);
+  uint32_t rx = (rd == 0) ? 1 : 0;
+
+  if (rd == 0xF)  // Rd == PC (MOV PC, PC)
+  {
+    buf[0] = 0x059FF000u | (cond << 28u);  // LDR<c> PC, [PC, #0]
+    buf[1] = 0xEA000000;                   // B #0
+    buf[2] = pc;
+    return 12;
+  } else {
+    buf[0] = 0x0A000000u | (cond << 28u);             // B<c> #0
+    buf[1] = 0xEA000005;                              // B #20
+    buf[2] = 0xE52D0004 | (rx << 12u);                // PUSH {Rx}
+    buf[3] = 0xE59F0008 | (rx << 12u);                // LDR Rx, [PC, #8]
+    buf[4] = (inst & 0x0FFFFFF0u) | 0xE0000000 | rx;  // MOV{S} Rd, Rx{, <shift> #<amount>/RRX}
+    buf[5] = 0xE49D0004 | (rx << 12u);                // POP {Rx}
+    buf[6] = 0xEA000000;                              // B #0
+    buf[7] = pc;
+    return 32;
+  }
+}
+
+static size_t sh_a32_rewrite_ldr_lit(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a32_type_t type,
+                                     sh_a32_rewrite_info_t *rinfo) {
+  uint32_t cond = SH_UTIL_GET_BITS_32(inst, 31, 28);
+  uint32_t u = SH_UTIL_GET_BIT_32(inst, 23);
+  uint32_t rt = SH_UTIL_GET_BITS_16(inst, 15, 12);
+
+  uint32_t imm32;
+  if (type == LDR_LIT_A1 || type == LDR_LIT_PC_A1 || type == LDRB_LIT_A1)
+    imm32 = SH_UTIL_GET_BITS_32(inst, 11, 0);
+  else
+    imm32 = (SH_UTIL_GET_BITS_32(inst, 11, 8) << 4u) + SH_UTIL_GET_BITS_32(inst, 3, 0);
+  uint32_t addr = (u ? (SH_UTIL_ALIGN_4(pc) + imm32) : (SH_UTIL_ALIGN_4(pc) - imm32));
+  if (sh_a32_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  if (type == LDR_LIT_PC_A1 && rt == 0xF) {
+    // Rt == PC
+    buf[0] = 0x0A000000u | (cond << 28u);  // B<c> #0
+    buf[1] = 0xEA000006;                   // B #24
+    buf[2] = 0xE92D0003;                   // PUSH {R0, R1}
+    buf[3] = 0xE59F0000;                   // LDR R0, [PC, #0]
+    buf[4] = 0xEA000000;                   // B #0
+    buf[5] = addr;                         //
+    buf[6] = 0xE5900000;                   // LDR R0, [R0]
+    buf[7] = 0xE58D0004;                   // STR R0, [SP, #4]
+    buf[8] = 0xE8BD8001;                   // POP {R0, PC}
+    return 36;
+  } else {
+    buf[0] = 0x0A000000u | (cond << 28u);  // B<c> #0
+    buf[1] = 0xEA000003;                   // B #12
+    buf[2] = 0xE59F0000 | (rt << 12u);     // LDR Rt, [PC, #0]
+    buf[3] = 0xEA000000;                   // B #0
+    buf[4] = addr;                         //
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wswitch"
+    switch (type) {
+      case LDR_LIT_A1:
+        buf[5] = 0xE5900000 | (rt << 16u) | (rt << 12u);  // LDR Rt, [Rt]
+        break;
+      case LDRB_LIT_A1:
+        buf[5] = 0xE5D00000 | (rt << 16u) | (rt << 12u);  // LDRB Rt, [Rt]
+        break;
+      case LDRD_LIT_A1:
+        buf[5] = 0xE1C000D0 | (rt << 16u) | (rt << 12u);  // LDRD Rt, [Rt]
+        break;
+      case LDRH_LIT_A1:
+        buf[5] = 0xE1D000B0 | (rt << 16u) | (rt << 12u);  // LDRH Rt, [Rt]
+        break;
+      case LDRSB_LIT_A1:
+        buf[5] = 0xE1D000D0 | (rt << 16u) | (rt << 12u);  // LDRSB Rt, [Rt]
+        break;
+      case LDRSH_LIT_A1:
+        buf[5] = 0xE1D000F0 | (rt << 16u) | (rt << 12u);  // LDRSH Rt, [Rt]
+        break;
+    }
+#pragma clang diagnostic pop
+    return 24;
+  }
+}
+
+static size_t sh_a32_rewrite_ldr_reg(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a32_type_t type) {
+  // LDR<c> <Rt>, [PC,+/-<Rm>{, <shift>}]{!}
+  // ......
+  uint32_t cond = SH_UTIL_GET_BITS_32(inst, 31, 28);
+  uint32_t rt = SH_UTIL_GET_BITS_16(inst, 15, 12);
+  uint32_t rt2 = rt + 1;
+  uint32_t rm = SH_UTIL_GET_BITS_16(inst, 3, 0);
+  uint32_t rx;  // r0 - r3
+  for (rx = 3;; --rx)
+    if (rx != rt && rx != rt2 && rx != rm) break;
+
+  if (type == LDR_REG_PC_A1 && rt == 0xF) {
+    // Rt == PC
+    uint32_t ry;  // r0 - r4
+    for (ry = 4;; --ry)
+      if (ry != rt && ry != rt2 && ry != rm && ry != rx) break;
+
+    buf[0] = 0x0A000000u | (cond << 28u);           // B<c> #0
+    buf[1] = 0xEA000006;                            // B #24
+    buf[2] = 0xE92D8000 | (1u << rx) | (1u << ry);  // PUSH {Rx, Ry, PC}
+    buf[3] = 0xE59F0000 | (rx << 12u);              // LDR Rx, [PC, #8]
+    buf[4] = 0xEA000000;                            // B #0
+    buf[5] = pc;
+    buf[6] =
+        (inst & 0x0FF00FFFu) | 0xE0000000 | (rx << 16u) | (ry << 12u);  // LDRxx Ry, [Rx],+/-Rm{, <shift>}
+    buf[7] = 0xE58D0008 | (ry << 12u);                                  // STR Ry, [SP, #8]
+    buf[8] = 0xE8BD8000 | (1u << rx) | (1u << ry);                      // POP {Rx, Ry, PC}
+    return 36;
+  } else {
+    buf[0] = 0x0A000000u | (cond << 28u);  // B<c> #0
+    buf[1] = 0xEA000005;                   // B #20
+    buf[2] = 0xE52D0004 | (rx << 12u);     // PUSH {Rx}
+    buf[3] = 0xE59F0000 | (rx << 12u);     // LDR Rx, [PC, #0]
+    buf[4] = 0xEA000000;                   // B #0
+    buf[5] = pc;
+    buf[6] = (inst & 0x0FF0FFFFu) | 0xE0000000 | (rx << 16u);  // LDRxx Rt, [Rx],+/-Rm{, <shift>}
+    buf[7] = 0xE49D0004 | (rx << 12u);                         // POP {Rx}
+    return 32;
+  }
+}
+
+size_t sh_a32_rewrite(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a32_rewrite_info_t *rinfo) {
+  sh_a32_type_t type = sh_a32_get_type(inst);
+  SH_LOG_INFO("a32 rewrite: type %d, inst %" PRIx32, type, inst);
+
+  // We will only overwrite 4 to 8 bytes on A32, so PC cannot be in the coverage.
+  // In this case, the add/sub/mov/ldr_reg instruction does not need to consider
+  // the problem of PC in the coverage area when rewriting.
+
+  if (type == B_A1 || type == BX_A1 || type == BL_IMM_A1 || type == BLX_IMM_A2)
+    return sh_a32_rewrite_b(buf, inst, pc, type, rinfo);
+  else if (type == ADD_REG_A1 || type == ADD_REG_PC_A1 || type == SUB_REG_A1 || type == SUB_REG_PC_A1)
+    return sh_a32_rewrite_add_or_sub(buf, inst, pc);
+  else if (type == ADR_A1 || type == ADR_A2)
+    return sh_a32_rewrite_adr(buf, inst, pc, type, rinfo);
+  else if (type == MOV_REG_A1 || type == MOV_REG_PC_A1)
+    return sh_a32_rewrite_mov(buf, inst, pc);
+  else if (type == LDR_LIT_A1 || type == LDR_LIT_PC_A1 || type == LDRB_LIT_A1 || type == LDRD_LIT_A1 ||
+           type == LDRH_LIT_A1 || type == LDRSB_LIT_A1 || type == LDRSH_LIT_A1)
+    return sh_a32_rewrite_ldr_lit(buf, inst, pc, type, rinfo);
+  else if (type == LDR_REG_A1 || type == LDR_REG_PC_A1 || type == LDRB_REG_A1 || type == LDRD_REG_A1 ||
+           type == LDRH_REG_A1 || type == LDRSB_REG_A1 || type == LDRSH_REG_A1)
+    return sh_a32_rewrite_ldr_reg(buf, inst, pc, type);
+  else {
+    // IGNORED
+    buf[0] = inst;
+    return 4;
+  }
+}
+
+size_t sh_a32_absolute_jump(uint32_t *buf, uintptr_t addr) {
+  buf[0] = 0xE51FF004;  // LDR PC, [PC, #-4]
+  buf[1] = addr;
+  return 8;
+}
+
+size_t sh_a32_relative_jump(uint32_t *buf, uintptr_t addr, uintptr_t pc) {
+  buf[0] = 0xEA000000 | (((addr - pc) & 0x03FFFFFFu) >> 2u);  // B <label>
+  return 4;
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_a32.h b/app/src/main/cpp/shadowhook/arch/arm/sh_a32.h
new file mode 100644
index 0000000..efe1592
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_a32.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct {
+  uintptr_t overwrite_start_addr;
+  uintptr_t overwrite_end_addr;
+  uint32_t *rewrite_buf;
+  size_t rewrite_buf_offset;
+  size_t rewrite_inst_lens[2];
+  size_t rewrite_inst_lens_cnt;
+} sh_a32_rewrite_info_t;
+
+size_t sh_a32_get_rewrite_inst_len(uint32_t inst);
+size_t sh_a32_rewrite(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a32_rewrite_info_t *rinfo);
+
+size_t sh_a32_absolute_jump(uint32_t *buf, uintptr_t addr);
+size_t sh_a32_relative_jump(uint32_t *buf, uintptr_t addr, uintptr_t pc);
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_inst.c b/app/src/main/cpp/shadowhook/arch/arm/sh_inst.c
new file mode 100644
index 0000000..9ca310f
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_inst.c
@@ -0,0 +1,523 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_inst.h"
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "sh_a32.h"
+#include "sh_config.h"
+#include "sh_enter.h"
+#include "sh_exit.h"
+#include "sh_log.h"
+#include "sh_sig.h"
+#include "sh_t16.h"
+#include "sh_t32.h"
+#include "sh_txx.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+
+static void sh_inst_get_thumb_rewrite_info(sh_inst_t *self, uintptr_t target_addr,
+                                           sh_txx_rewrite_info_t *rinfo) {
+  memset(rinfo, 0, sizeof(sh_txx_rewrite_info_t));
+
+  size_t idx = 0;
+  uintptr_t target_addr_offset = 0;
+  uintptr_t pc = target_addr + 4;
+  size_t rewrite_len = 0;
+
+  while (rewrite_len < self->backup_len) {
+    // IT block
+    sh_t16_it_t it;
+    if (sh_t16_parse_it(&it, *((uint16_t *)(target_addr + target_addr_offset)), pc)) {
+      rewrite_len += (2 + it.insts_len);
+
+      size_t it_block_idx = idx++;
+      size_t it_block_len = 4 + 4;  // IT-else + IT-then
+      for (size_t i = 0, j = 0; i < it.insts_cnt; i++) {
+        bool is_thumb32 = sh_util_is_thumb32((uintptr_t)(&(it.insts[j])));
+        if (is_thumb32) {
+          it_block_len += sh_t32_get_rewrite_inst_len(it.insts[j], it.insts[j + 1]);
+          rinfo->inst_lens[idx++] = 0;
+          rinfo->inst_lens[idx++] = 0;
+          j += 2;
+        } else {
+          it_block_len += sh_t16_get_rewrite_inst_len(it.insts[j]);
+          rinfo->inst_lens[idx++] = 0;
+          j += 1;
+        }
+      }
+      rinfo->inst_lens[it_block_idx] = it_block_len;
+
+      target_addr_offset += (2 + it.insts_len);
+      pc += (2 + it.insts_len);
+    }
+    // not IT block
+    else {
+      bool is_thumb32 = sh_util_is_thumb32(target_addr + target_addr_offset);
+      size_t inst_len = (is_thumb32 ? 4 : 2);
+      rewrite_len += inst_len;
+
+      if (is_thumb32) {
+        rinfo->inst_lens[idx++] =
+            sh_t32_get_rewrite_inst_len(*((uint16_t *)(target_addr + target_addr_offset)),
+                                        *((uint16_t *)(target_addr + target_addr_offset + 2)));
+        rinfo->inst_lens[idx++] = 0;
+      } else
+        rinfo->inst_lens[idx++] =
+            sh_t16_get_rewrite_inst_len(*((uint16_t *)(target_addr + target_addr_offset)));
+
+      target_addr_offset += inst_len;
+      pc += inst_len;
+    }
+  }
+
+  rinfo->start_addr = target_addr;
+  rinfo->end_addr = target_addr + rewrite_len;
+  rinfo->buf = (uint16_t *)self->enter_addr;
+  rinfo->buf_offset = 0;
+  rinfo->inst_lens_cnt = idx;
+}
+
+static int sh_inst_hook_thumb_rewrite(sh_inst_t *self, uintptr_t target_addr, uintptr_t *orig_addr,
+                                      uintptr_t *orig_addr2, size_t *rewrite_len) {
+  // backup original instructions (length: 4 or 8 or 10)
+  memcpy((void *)(self->backup), (void *)target_addr, self->backup_len);
+
+  // package the information passed to rewrite
+  sh_txx_rewrite_info_t rinfo;
+  sh_inst_get_thumb_rewrite_info(self, target_addr, &rinfo);
+
+  // backup and rewrite original instructions
+  uintptr_t target_addr_offset = 0;
+  uintptr_t pc = target_addr + 4;
+  *rewrite_len = 0;
+  while (*rewrite_len < self->backup_len) {
+    // IT block
+    sh_t16_it_t it;
+    if (sh_t16_parse_it(&it, *((uint16_t *)(target_addr + target_addr_offset)), pc)) {
+      *rewrite_len += (2 + it.insts_len);
+
+      // save space holder point of IT-else B instruction
+      uintptr_t enter_inst_else_p = self->enter_addr + rinfo.buf_offset;
+      rinfo.buf_offset += 2;  // B<c> <label>
+      rinfo.buf_offset += 2;  // NOP
+
+      // rewrite IT block
+      size_t enter_inst_else_len = 4;  // B<c> + NOP + B + NOP
+      size_t enter_inst_then_len = 0;  // B + NOP
+      uintptr_t enter_inst_then_p = 0;
+      for (size_t i = 0, j = 0; i < it.insts_cnt; i++) {
+        if (i == it.insts_else_cnt) {
+          // save space holder point of IT-then (for B instruction)
+          enter_inst_then_p = self->enter_addr + rinfo.buf_offset;
+          rinfo.buf_offset += 2;  // B <label>
+          rinfo.buf_offset += 2;  // NOP
+
+          // fill IT-else B instruction
+          sh_t16_rewrite_it_else((uint16_t *)enter_inst_else_p, (uint16_t)enter_inst_else_len, &it);
+        }
+
+        // rewrite instructions in IT block
+        bool is_thumb32 = sh_util_is_thumb32((uintptr_t)(&(it.insts[j])));
+        size_t len;
+        if (is_thumb32)
+          len = sh_t32_rewrite((uint16_t *)(self->enter_addr + rinfo.buf_offset), it.insts[j],
+                               it.insts[j + 1], it.pcs[i], &rinfo);
+        else
+          len = sh_t16_rewrite((uint16_t *)(self->enter_addr + rinfo.buf_offset), it.insts[j], it.pcs[i],
+                               &rinfo);
+        if (0 == len) return SHADOWHOOK_ERRNO_HOOK_REWRITE_FAILED;
+        rinfo.buf_offset += len;
+        j += (is_thumb32 ? 2 : 1);
+
+        // save the total offset for ELSE/THEN in enter
+        if (i < it.insts_else_cnt)
+          enter_inst_else_len += len;
+        else
+          enter_inst_then_len += len;
+
+        if (i == it.insts_cnt - 1) {
+          // fill IT-then B instruction
+          sh_t16_rewrite_it_then((uint16_t *)enter_inst_then_p, (uint16_t)enter_inst_then_len);
+        }
+      }
+
+      target_addr_offset += (2 + it.insts_len);
+      pc += (2 + it.insts_len);
+    }
+    // not IT block
+    else {
+      bool is_thumb32 = sh_util_is_thumb32(target_addr + target_addr_offset);
+      size_t inst_len = (is_thumb32 ? 4 : 2);
+      *rewrite_len += inst_len;
+
+      // rewrite original instructions (fill in enter)
+      SH_LOG_INFO("thumb rewrite: offset %zu, pc %" PRIxPTR, rinfo.buf_offset, pc);
+      size_t len;
+      if (is_thumb32)
+        len = sh_t32_rewrite((uint16_t *)(self->enter_addr + rinfo.buf_offset),
+                             *((uint16_t *)(target_addr + target_addr_offset)),
+                             *((uint16_t *)(target_addr + target_addr_offset + 2)), pc, &rinfo);
+      else
+        len = sh_t16_rewrite((uint16_t *)(self->enter_addr + rinfo.buf_offset),
+                             *((uint16_t *)(target_addr + target_addr_offset)), pc, &rinfo);
+      if (0 == len) return SHADOWHOOK_ERRNO_HOOK_REWRITE_FAILED;
+      rinfo.buf_offset += len;
+
+      target_addr_offset += inst_len;
+      pc += inst_len;
+    }
+  }
+  SH_LOG_INFO("thumb rewrite: len %zu to %zu", *rewrite_len, rinfo.buf_offset);
+
+  // absolute jump back to remaining original instructions (fill in enter)
+  rinfo.buf_offset += sh_t32_absolute_jump((uint16_t *)(self->enter_addr + rinfo.buf_offset), true,
+                                           SH_UTIL_SET_BIT0(target_addr + *rewrite_len));
+  sh_util_clear_cache(self->enter_addr, rinfo.buf_offset);
+
+  // save original function address
+  if (NULL != orig_addr) __atomic_store_n(orig_addr, SH_UTIL_SET_BIT0(self->enter_addr), __ATOMIC_SEQ_CST);
+  if (NULL != orig_addr2) __atomic_store_n(orig_addr2, SH_UTIL_SET_BIT0(self->enter_addr), __ATOMIC_SEQ_CST);
+  return 0;
+}
+
+#ifdef SH_CONFIG_DETECT_THUMB_TAIL_ALIGNED
+static bool sh_inst_thumb_is_long_enough(uintptr_t target_addr, size_t overwrite_len, xdl_info_t *dlinfo) {
+  if (overwrite_len <= dlinfo->dli_ssize) return true;
+
+  // check align-4 in the end of symbol
+  if ((overwrite_len == dlinfo->dli_ssize + 2) && ((target_addr + dlinfo->dli_ssize) % 4 == 2)) {
+    uintptr_t sym_end = target_addr + dlinfo->dli_ssize;
+    if (0 != sh_util_mprotect(sym_end, 2, PROT_READ | PROT_WRITE | PROT_EXEC)) return false;
+
+    // should be zero-ed
+    if (0 != *((uint16_t *)sym_end)) return false;
+
+    // should not belong to any symbol
+    void *dlcache = NULL;
+    xdl_info_t dlinfo2;
+    if (sh_util_get_api_level() >= __ANDROID_API_L__) {
+      xdl_addr((void *)SH_UTIL_SET_BIT0(sym_end), &dlinfo2, &dlcache);
+    } else {
+      SH_SIG_TRY(SIGSEGV, SIGBUS) {
+        xdl_addr((void *)SH_UTIL_SET_BIT0(sym_end), &dlinfo2, &dlcache);
+      }
+      SH_SIG_CATCH() {
+        memset(&dlinfo2, 0, sizeof(dlinfo2));
+        SH_LOG_WARN("thumb detect tail aligned: crashed");
+      }
+      SH_SIG_EXIT
+    }
+    xdl_addr_clean(&dlcache);
+    if (NULL != dlinfo2.dli_sname) return false;
+
+    // trust here is useless alignment data
+    return true;
+  }
+
+  return false;
+}
+#endif
+
+#ifdef SH_CONFIG_TRY_WITH_EXIT
+
+// B T4: [-16M, +16M - 2]
+#define SH_INST_T32_B_RANGE_LOW  (16777216)
+#define SH_INST_T32_B_RANGE_HIGH (16777214)
+
+static int sh_inst_hook_thumb_with_exit(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo,
+                                        uintptr_t new_addr, uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  int r;
+  target_addr = SH_UTIL_CLEAR_BIT0(target_addr);
+  uintptr_t pc = target_addr + 4;
+  self->backup_len = 4;
+
+#ifdef SH_CONFIG_DETECT_THUMB_TAIL_ALIGNED
+  if (!sh_inst_thumb_is_long_enough(target_addr, self->backup_len, dlinfo))
+    return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+#else
+  if (dlinfo->dli_ssize < self->backup_len) return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+#endif
+
+  // alloc an exit for absolute jump
+  sh_t32_absolute_jump((uint16_t *)self->exit, true, new_addr);
+  if (0 != (r = sh_exit_alloc(&self->exit_addr, &self->exit_type, pc, dlinfo, (uint8_t *)(self->exit),
+                              sizeof(self->exit), SH_INST_T32_B_RANGE_LOW, SH_INST_T32_B_RANGE_HIGH)))
+    return r;
+
+  // rewrite
+  if (0 != sh_util_mprotect(target_addr, dlinfo->dli_ssize, PROT_READ | PROT_WRITE | PROT_EXEC)) {
+    r = SHADOWHOOK_ERRNO_MPROT;
+    goto err;
+  }
+  size_t rewrite_len = 0;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = sh_inst_hook_thumb_rewrite(self, target_addr, orig_addr, orig_addr2, &rewrite_len);
+  }
+  SH_SIG_CATCH() {
+    r = SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH;
+    goto err;
+  }
+  SH_SIG_EXIT
+  if (0 != r) goto err;
+
+  // relative jump to the exit by overwriting the head of original function
+  sh_t32_relative_jump((uint16_t *)self->trampo, self->exit_addr, pc);
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+  if (0 != (r = sh_util_write_inst(target_addr, self->trampo, self->backup_len))) goto err;
+
+  SH_LOG_INFO("thumb: hook (WITH EXIT) OK. target %" PRIxPTR " -> exit %" PRIxPTR " -> new %" PRIxPTR
+              " -> enter %" PRIxPTR " -> remaining %" PRIxPTR,
+              target_addr, self->exit_addr, new_addr, self->enter_addr,
+              SH_UTIL_SET_BIT0(target_addr + rewrite_len));
+  return 0;
+
+err:
+  sh_exit_free(self->exit_addr, self->exit_type, (uint8_t *)(self->exit), sizeof(self->exit));
+  self->exit_addr = 0;  // this is a flag for with-exit or without-exit
+  return r;
+}
+#endif
+
+static int sh_inst_hook_thumb_without_exit(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo,
+                                           uintptr_t new_addr, uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  int r;
+  target_addr = SH_UTIL_CLEAR_BIT0(target_addr);
+  bool is_align4 = (0 == (target_addr % 4));
+  self->backup_len = (is_align4 ? 8 : 10);
+
+#ifdef SH_CONFIG_DETECT_THUMB_TAIL_ALIGNED
+  if (!sh_inst_thumb_is_long_enough(target_addr, self->backup_len, dlinfo))
+    return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+#else
+  if (dlinfo->dli_ssize < self->backup_len) return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+#endif
+
+  // rewrite
+  if (0 != sh_util_mprotect(target_addr, dlinfo->dli_ssize, PROT_READ | PROT_WRITE | PROT_EXEC))
+    return SHADOWHOOK_ERRNO_MPROT;
+  size_t rewrite_len = 0;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = sh_inst_hook_thumb_rewrite(self, target_addr, orig_addr, orig_addr2, &rewrite_len);
+  }
+  SH_SIG_CATCH() {
+    return SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH;
+  }
+  SH_SIG_EXIT
+  if (0 != r) return r;
+
+  // absolute jump to new function address by overwriting the head of original function
+  sh_t32_absolute_jump((uint16_t *)self->trampo, is_align4, new_addr);
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+  if (0 != (r = sh_util_write_inst(target_addr, self->trampo, self->backup_len))) return r;
+
+  SH_LOG_INFO("thumb: hook (WITHOUT EXIT) OK. target %" PRIxPTR " -> new %" PRIxPTR " -> enter %" PRIxPTR
+              " -> remaining %" PRIxPTR,
+              target_addr, new_addr, self->enter_addr, SH_UTIL_SET_BIT0(target_addr + rewrite_len));
+  return 0;
+}
+
+static int sh_inst_hook_arm_rewrite(sh_inst_t *self, uintptr_t target_addr, uintptr_t *orig_addr,
+                                    uintptr_t *orig_addr2) {
+  // backup original instructions (length: 4 or 8)
+  memcpy((void *)(self->backup), (void *)target_addr, self->backup_len);
+
+  // package the information passed to rewrite
+  sh_a32_rewrite_info_t rinfo;
+  rinfo.overwrite_start_addr = target_addr;
+  rinfo.overwrite_end_addr = target_addr + self->backup_len;
+  rinfo.rewrite_buf = (uint32_t *)self->enter_addr;
+  rinfo.rewrite_buf_offset = 0;
+  rinfo.rewrite_inst_lens_cnt = self->backup_len / 4;
+  for (uintptr_t i = 0; i < self->backup_len; i += 4)
+    rinfo.rewrite_inst_lens[i / 4] = sh_a32_get_rewrite_inst_len(*((uint32_t *)(target_addr + i)));
+
+  // rewrite original instructions (fill in enter)
+  uintptr_t pc = target_addr + 8;
+  for (uintptr_t i = 0; i < self->backup_len; i += 4, pc += 4) {
+    size_t offset = sh_a32_rewrite((uint32_t *)(self->enter_addr + rinfo.rewrite_buf_offset),
+                                   *((uint32_t *)(target_addr + i)), pc, &rinfo);
+    if (0 == offset) return SHADOWHOOK_ERRNO_HOOK_REWRITE_FAILED;
+    rinfo.rewrite_buf_offset += offset;
+  }
+
+  // absolute jump back to remaining original instructions (fill in enter)
+  rinfo.rewrite_buf_offset += sh_a32_absolute_jump((uint32_t *)(self->enter_addr + rinfo.rewrite_buf_offset),
+                                                   target_addr + self->backup_len);
+  sh_util_clear_cache(self->enter_addr, rinfo.rewrite_buf_offset);
+
+  // save original function address
+  if (NULL != orig_addr) __atomic_store_n(orig_addr, self->enter_addr, __ATOMIC_SEQ_CST);
+  if (NULL != orig_addr2) __atomic_store_n(orig_addr2, self->enter_addr, __ATOMIC_SEQ_CST);
+  return 0;
+}
+
+#ifdef SH_CONFIG_TRY_WITH_EXIT
+
+// B A1: [-32M, +32M - 4]
+#define SH_INST_A32_B_RANGE_LOW  (33554432)
+#define SH_INST_A32_B_RANGE_HIGH (33554428)
+
+static int sh_inst_hook_arm_with_exit(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo,
+                                      uintptr_t new_addr, uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  int r;
+  uintptr_t pc = target_addr + 8;
+  self->backup_len = 4;
+
+  if (dlinfo->dli_ssize < self->backup_len) return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+
+  // alloc an exit for absolute jump
+  sh_a32_absolute_jump(self->exit, new_addr);
+  if (0 != (r = sh_exit_alloc(&self->exit_addr, &self->exit_type, pc, dlinfo, (uint8_t *)(self->exit),
+                              sizeof(self->exit), SH_INST_A32_B_RANGE_LOW, SH_INST_A32_B_RANGE_HIGH)))
+    return r;
+
+  // rewrite
+  if (0 != sh_util_mprotect(target_addr, self->backup_len, PROT_READ | PROT_WRITE | PROT_EXEC)) {
+    r = SHADOWHOOK_ERRNO_MPROT;
+    goto err;
+  }
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = sh_inst_hook_arm_rewrite(self, target_addr, orig_addr, orig_addr2);
+  }
+  SH_SIG_CATCH() {
+    r = SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH;
+    goto err;
+  }
+  SH_SIG_EXIT
+  if (0 != r) goto err;
+
+  // relative jump to the exit by overwriting the head of original function
+  sh_a32_relative_jump(self->trampo, self->exit_addr, pc);
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+  if (0 != (r = sh_util_write_inst(target_addr, self->trampo, self->backup_len))) goto err;
+
+  SH_LOG_INFO("a32: hook (WITH EXIT) OK. target %" PRIxPTR " -> exit %" PRIxPTR " -> new %" PRIxPTR
+              " -> enter %" PRIxPTR " -> remaining %" PRIxPTR,
+              target_addr, self->exit_addr, new_addr, self->enter_addr, target_addr + self->backup_len);
+  return 0;
+
+err:
+  sh_exit_free(self->exit_addr, self->exit_type, (uint8_t *)(self->exit), sizeof(self->exit));
+  self->exit_addr = 0;  // this is a flag for with-exit or without-exit
+  return r;
+}
+
+#endif
+
+static int sh_inst_hook_arm_without_exit(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo,
+                                         uintptr_t new_addr, uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  int r;
+  self->backup_len = 8;
+
+  if (dlinfo->dli_ssize < self->backup_len) return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+
+  // rewrite
+  if (0 != sh_util_mprotect(target_addr, self->backup_len, PROT_READ | PROT_WRITE | PROT_EXEC))
+    return SHADOWHOOK_ERRNO_MPROT;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = sh_inst_hook_arm_rewrite(self, target_addr, orig_addr, orig_addr2);
+  }
+  SH_SIG_CATCH() {
+    return SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH;
+  }
+  SH_SIG_EXIT
+  if (0 != r) return r;
+
+  // absolute jump to new function address by overwriting the head of original function
+  sh_a32_absolute_jump(self->trampo, new_addr);
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+  if (0 != (r = sh_util_write_inst(target_addr, self->trampo, self->backup_len))) return r;
+
+  SH_LOG_INFO("a32: hook (WITHOUT EXIT) OK. target %" PRIxPTR " -> new %" PRIxPTR " -> enter %" PRIxPTR
+              " -> remaining %" PRIxPTR,
+              target_addr, new_addr, self->enter_addr, target_addr + self->backup_len);
+  return 0;
+}
+
+int sh_inst_hook(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo, uintptr_t new_addr,
+                 uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  self->enter_addr = sh_enter_alloc();
+  if (0 == self->enter_addr) return SHADOWHOOK_ERRNO_HOOK_ENTER;
+
+  int r;
+  if (SH_UTIL_IS_THUMB(target_addr)) {
+#ifdef SH_CONFIG_TRY_WITH_EXIT
+    if (0 == (r = sh_inst_hook_thumb_with_exit(self, target_addr, dlinfo, new_addr, orig_addr, orig_addr2)))
+      return r;
+#endif
+    if (0 ==
+        (r = sh_inst_hook_thumb_without_exit(self, target_addr, dlinfo, new_addr, orig_addr, orig_addr2)))
+      return r;
+  } else {
+#ifdef SH_CONFIG_TRY_WITH_EXIT
+    if (0 == (r = sh_inst_hook_arm_with_exit(self, target_addr, dlinfo, new_addr, orig_addr, orig_addr2)))
+      return r;
+#endif
+    if (0 == (r = sh_inst_hook_arm_without_exit(self, target_addr, dlinfo, new_addr, orig_addr, orig_addr2)))
+      return r;
+  }
+
+  // hook failed
+  if (NULL != orig_addr) *orig_addr = 0;
+  if (NULL != orig_addr2) *orig_addr2 = 0;
+  sh_enter_free(self->enter_addr);
+  return r;
+}
+
+int sh_inst_unhook(sh_inst_t *self, uintptr_t target_addr) {
+  int r;
+  bool is_thumb = SH_UTIL_IS_THUMB(target_addr);
+
+  if (is_thumb) target_addr = SH_UTIL_CLEAR_BIT0(target_addr);
+
+  // restore the instructions at the target address
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = memcmp((void *)target_addr, self->trampo, self->backup_len);
+  }
+  SH_SIG_CATCH() {
+    return SHADOWHOOK_ERRNO_UNHOOK_CMP_CRASH;
+  }
+  SH_SIG_EXIT
+  if (0 != r) return SHADOWHOOK_ERRNO_UNHOOK_TRAMPO_MISMATCH;
+  if (0 != (r = sh_util_write_inst(target_addr, self->backup, self->backup_len))) return r;
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+
+  // free memory space for exit
+  if (0 != self->exit_addr)
+    if (0 !=
+        (r = sh_exit_free(self->exit_addr, self->exit_type, (uint8_t *)(self->exit), sizeof(self->exit))))
+      return r;
+
+  // free memory space for enter
+  sh_enter_free(self->enter_addr);
+
+  SH_LOG_INFO("%s: unhook OK. target %" PRIxPTR, is_thumb ? "thumb" : "a32", target_addr);
+  return 0;
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_inst.h b/app/src/main/cpp/shadowhook/arch/arm/sh_inst.h
new file mode 100644
index 0000000..ed38ab7
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_inst.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdint.h>
+
+#include "xdl.h"
+
+typedef struct {
+  uint32_t trampo[4];   // align 16 // length == backup_len
+  uint8_t backup[16];   // align 16
+  uint16_t backup_len;  // == 4 or 8 or 10
+  uint16_t exit_type;
+  uintptr_t exit_addr;
+  uint32_t exit[2];
+  uintptr_t enter_addr;
+} sh_inst_t;
+
+int sh_inst_hook(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo, uintptr_t new_addr,
+                 uintptr_t *orig_addr, uintptr_t *orig_addr2);
+int sh_inst_unhook(sh_inst_t *self, uintptr_t target_addr);
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_t16.c b/app/src/main/cpp/shadowhook/arch/arm/sh_t16.c
new file mode 100644
index 0000000..d250526
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_t16.c
@@ -0,0 +1,284 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Pengying Xu (xupengying@bytedance.com) on 2021-04-11.
+
+#include "sh_t16.h"
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "sh_log.h"
+#include "sh_util.h"
+
+// https://developer.arm.com/documentation/ddi0406/latest
+// https://developer.arm.com/documentation/ddi0597/latest
+
+typedef enum {
+  IGNORED = 0,
+  IT_T1,
+  B_T1,
+  B_T2,
+  BX_T1,
+  ADD_REG_T2,
+  MOV_REG_T1,
+  ADR_T1,
+  LDR_LIT_T1,
+  CBZ_T1,
+  CBNZ_T1
+} sh_t16_type_t;
+
+static sh_t16_type_t sh_t16_get_type(uint16_t inst) {
+  if (((inst & 0xFF00u) == 0xBF00) && ((inst & 0x000Fu) != 0x0000) && ((inst & 0x00F0u) != 0x00F0))
+    return IT_T1;
+  else if (((inst & 0xF000u) == 0xD000) && ((inst & 0x0F00u) != 0x0F00) && ((inst & 0x0F00u) != 0x0E00))
+    return B_T1;
+  else if ((inst & 0xF800u) == 0xE000)
+    return B_T2;
+  else if ((inst & 0xFFF8u) == 0x4778)
+    return BX_T1;
+  else if (((inst & 0xFF78u) == 0x4478) && ((inst & 0x0087u) != 0x0085))
+    return ADD_REG_T2;
+  else if ((inst & 0xFF78u) == 0x4678)
+    return MOV_REG_T1;
+  else if ((inst & 0xF800u) == 0xA000)
+    return ADR_T1;
+  else if ((inst & 0xF800u) == 0x4800)
+    return LDR_LIT_T1;
+  else if ((inst & 0xFD00u) == 0xB100)
+    return CBZ_T1;
+  else if ((inst & 0xFD00u) == 0xB900)
+    return CBNZ_T1;
+  else
+    return IGNORED;
+}
+
+size_t sh_t16_get_rewrite_inst_len(uint16_t inst) {
+  static uint8_t map[] = {
+      4,   // IGNORED
+      0,   // IT_T1
+      12,  // B_T1
+      8,   // B_T2
+      8,   // BX_T1
+      16,  // ADD_REG_T2
+      12,  // MOV_REG_T1
+      8,   // ADR_T1
+      12,  // LDR_LIT_T1
+      12,  // CBZ_T1
+      12   // CBNZ_T1
+  };
+
+  return (size_t)(map[sh_t16_get_type(inst)]);
+}
+
+static size_t sh_t16_rewrite_b(uint16_t *buf, uint16_t inst, uintptr_t pc, sh_t16_type_t type,
+                               sh_txx_rewrite_info_t *rinfo) {
+  uint32_t addr;
+  if (type == B_T1) {
+    uint32_t imm8 = SH_UTIL_GET_BITS_16(inst, 7, 0);
+    addr = pc + SH_UTIL_SIGN_EXTEND_32(imm8 << 1u, 9u);
+    addr = SH_UTIL_SET_BIT0(addr);  // thumb -> thumb
+  } else if (type == B_T2) {
+    uint32_t imm11 = SH_UTIL_GET_BITS_16(inst, 10, 0);
+    addr = pc + SH_UTIL_SIGN_EXTEND_32(imm11 << 1u, 12u);
+    addr = SH_UTIL_SET_BIT0(addr);  // thumb -> thumb
+  } else {
+    // type == BX_T1
+    // BX PC
+    // PC must be even, and the "BX PC" instruction must be at a 4-byte aligned address,
+    // so the instruction set must be exchanged from "thumb" to "arm".
+    addr = pc;  // thumb -> arm
+  }
+  addr = sh_txx_fix_addr(addr, rinfo);
+
+  size_t idx = 0;
+  if (type == B_T1) {
+    buf[idx++] = inst & 0xFF00u;  // B<c> #0
+    buf[idx++] = 0xE003;          // B PC, #6
+  }
+  buf[idx++] = 0xF8DF;  // LDR.W PC, [PC]
+  buf[idx++] = 0xF000;  // ...
+  buf[idx++] = addr & 0xFFFFu;
+  buf[idx++] = addr >> 16u;
+  return idx * 2;  // 8 or 12
+}
+
+static size_t sh_t16_rewrite_add(uint16_t *buf, uint16_t inst, uintptr_t pc) {
+  // ADD<c> <Rdn>, PC
+  uint16_t dn = SH_UTIL_GET_BIT_16(inst, 7);
+  uint16_t rdn = SH_UTIL_GET_BITS_16(inst, 2, 0);
+  uint16_t rd = (uint16_t)(dn << 3u) | rdn;
+  uint16_t rx = (rd == 0) ? 1 : 0;  // r0 - r1
+
+  buf[0] = (uint16_t)(0xB400u | (1u << rx));         // PUSH {Rx}
+  buf[1] = 0x4802u | (uint16_t)(rx << 8u);           // LDR Rx, [PC, #8]
+  buf[2] = (inst & 0xFF87u) | (uint16_t)(rx << 3u);  // ADD Rd, Rx
+  buf[3] = (uint16_t)(0xBC00u | (1u << rx));         // POP {Rx}
+  buf[4] = 0xE002;                                   // B #4
+  buf[5] = 0xBF00;
+  buf[6] = pc & 0xFFFFu;
+  buf[7] = pc >> 16u;
+  return 16;
+}
+
+static size_t sh_t16_rewrite_mov(uint16_t *buf, uint16_t inst, uintptr_t pc) {
+  // MOV<c> <Rd>, PC
+  uint16_t D = SH_UTIL_GET_BIT_16(inst, 7);
+  uint16_t rd = SH_UTIL_GET_BITS_16(inst, 2, 0);
+  uint16_t d = (uint16_t)(D << 3u) | rd;  // r0 - r15
+
+  buf[0] = 0xF8DF;                     // LDR.W Rd, [PC, #4]
+  buf[1] = (uint16_t)(d << 12u) + 4u;  // ...
+  buf[2] = 0xE002;                     // B #4
+  buf[3] = 0xBF00;                     // NOP
+  buf[4] = pc & 0xFFFFu;
+  buf[5] = pc >> 16u;
+  return 12;
+}
+
+static size_t sh_t16_rewrite_adr(uint16_t *buf, uint16_t inst, uintptr_t pc, sh_txx_rewrite_info_t *rinfo) {
+  // ADR<c> <Rd>, <label>
+  uint16_t rd = SH_UTIL_GET_BITS_16(inst, 10, 8);  // r0 - r7
+  uint16_t imm8 = SH_UTIL_GET_BITS_16(inst, 7, 0);
+  uint32_t addr = SH_UTIL_ALIGN_4(pc) + (uint32_t)(imm8 << 2u);
+  if (sh_txx_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  buf[0] = 0x4800u | (uint16_t)(rd << 8u);  // LDR Rd, [PC]
+  buf[1] = 0xE001;                          // B #2
+  buf[2] = addr & 0xFFFFu;
+  buf[3] = addr >> 16u;
+  return 8;
+}
+
+static size_t sh_t16_rewrite_ldr(uint16_t *buf, uint16_t inst, uintptr_t pc, sh_txx_rewrite_info_t *rinfo) {
+  // LDR<c> <Rt>, <label>
+  uint16_t rt = SH_UTIL_GET_BITS_16(inst, 10, 8);  // r0 - r7
+  uint16_t imm8 = SH_UTIL_GET_BITS_16(inst, 7, 0);
+  uint32_t addr = SH_UTIL_ALIGN_4(pc) + (uint32_t)(imm8 << 2u);
+  if (sh_txx_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  buf[0] = 0x4800u | (uint16_t)(rt << 8u);  // LDR Rt, [PC]
+  buf[1] = 0xE001;                          // B #2
+  buf[2] = addr & 0xFFFFu;
+  buf[3] = addr >> 16u;
+  buf[4] = 0x6800u | (uint16_t)(rt << 3u) | rt;  // LDR Rt, [Rt]
+  buf[5] = 0xBF00;                               // NOP
+  return 12;
+}
+
+static size_t sh_t16_rewrite_cb(uint16_t *buf, uint16_t inst, uintptr_t pc, sh_txx_rewrite_info_t *rinfo) {
+  // CB{N}Z <Rn>, <label>
+  uint16_t i = SH_UTIL_GET_BIT_16(inst, 9);
+  uint16_t imm5 = SH_UTIL_GET_BITS_16(inst, 7, 3);
+  uint32_t imm32 = (uint32_t)(i << 6u) | (uint32_t)(imm5 << 1u);
+  uint32_t addr = SH_UTIL_SET_BIT0(pc + imm32);  // thumb -> thumb
+  addr = sh_txx_fix_addr(addr, rinfo);
+
+  buf[0] = inst & 0xFD07u;  // CB(N)Z Rn, #0
+  buf[1] = 0xE003;          // B PC, #6
+  buf[2] = 0xF8DF;          // LDR.W PC, [PC]
+  buf[3] = 0xF000;          // ...
+  buf[4] = addr & 0xFFFFu;
+  buf[5] = addr >> 16u;
+  return 12;
+}
+
+size_t sh_t16_rewrite(uint16_t *buf, uint16_t inst, uintptr_t pc, sh_txx_rewrite_info_t *rinfo) {
+  sh_t16_type_t type = sh_t16_get_type(inst);
+  SH_LOG_INFO("t16 rewrite: type %d, inst %" PRIx16, type, inst);
+
+  if (type == B_T1 || type == B_T2 || type == BX_T1)
+    return sh_t16_rewrite_b(buf, inst, pc, type, rinfo);
+  else if (type == ADD_REG_T2)
+    return sh_t16_rewrite_add(buf, inst, pc);
+  else if (type == MOV_REG_T1)
+    return sh_t16_rewrite_mov(buf, inst, pc);
+  else if (type == ADR_T1)
+    return sh_t16_rewrite_adr(buf, inst, pc, rinfo);
+  else if (type == LDR_LIT_T1)
+    return sh_t16_rewrite_ldr(buf, inst, pc, rinfo);
+  else if (type == CBZ_T1 || type == CBNZ_T1)
+    return sh_t16_rewrite_cb(buf, inst, pc, rinfo);
+  else {
+    // IGNORED
+    buf[0] = inst;
+    buf[1] = 0xBF00;  // NOP
+    return 4;
+  }
+}
+
+static size_t sh_t16_get_it_insts_count(uint16_t inst) {
+  if ((inst & 0x1u) != 0) return 4;
+  if ((inst & 0x2u) != 0) return 3;
+  if ((inst & 0x4u) != 0) return 2;
+  return 1;
+}
+
+bool sh_t16_parse_it(sh_t16_it_t *it, uint16_t inst, uintptr_t pc) {
+  if (IT_T1 != sh_t16_get_type(inst)) return false;
+  SH_LOG_INFO("t16 rewrite: type IT, inst %" PRIx16, inst);
+
+  // address of the first inst in the IT block, skip the IT inst itself (2 bytes)
+  uintptr_t target_addr = pc - 4 + 2;
+
+  it->firstcond = (uint8_t)(inst >> 4u);
+  uint8_t firstcond_0 = it->firstcond & 1u;
+
+  memset(it, 0, sizeof(sh_t16_it_t));
+  it->insts_cnt = sh_t16_get_it_insts_count(inst);
+
+  size_t insts_idx = 0, pcs_idx = 0;
+  for (int parse_else = 1; parse_else >= 0; parse_else--)  // round 0: parse ELSE, round 1: THEN
+  {
+    uintptr_t target_offset = 0;
+    for (size_t i = 0; i < it->insts_cnt; i++) {
+      bool is_thumb32 = sh_util_is_thumb32(target_addr + target_offset);
+      uint8_t mask_x = (uint8_t)(inst >> (uint16_t)(4 - i)) & 1u;
+
+      if ((parse_else && mask_x != firstcond_0) ||  // parse ELSE or
+          (!parse_else && mask_x == firstcond_0))   // parse THEN
+      {
+        it->insts[insts_idx++] = *((uint16_t *)(target_addr + target_offset));
+        if (is_thumb32) it->insts[insts_idx++] = *((uint16_t *)(target_addr + target_offset + 2));
+
+        it->pcs[pcs_idx++] = target_addr + target_offset + 4;
+        if (parse_else) it->insts_else_cnt++;
+      }
+
+      target_offset += (is_thumb32 ? 4 : 2);
+    }
+  }
+  it->insts_len = insts_idx * 2;
+
+  return true;
+}
+
+void sh_t16_rewrite_it_else(uint16_t *buf, uint16_t imm9, sh_t16_it_t *it) {
+  buf[0] = 0xD000u | (uint16_t)(it->firstcond << 8u) | (uint16_t)(imm9 >> 1u);  // B<c> <label>
+  buf[1] = 0xBF00;                                                              // NOP
+}
+
+void sh_t16_rewrite_it_then(uint16_t *buf, uint16_t imm12) {
+  buf[0] = 0xE000u | (uint16_t)(imm12 >> 1u);  // B <label>
+  buf[1] = 0xBF00;                             // NOP
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_t16.h b/app/src/main/cpp/shadowhook/arch/arm/sh_t16.h
new file mode 100644
index 0000000..9d68d79
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_t16.h
@@ -0,0 +1,46 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Pengying Xu (xupengying@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "sh_txx.h"
+
+typedef struct {
+  uint16_t insts[8];
+  size_t insts_len;       // 2 - 16 (bytes)
+  size_t insts_cnt;       // 1 - 4
+  size_t insts_else_cnt;  // 0 - 3
+  uintptr_t pcs[4];
+  uint8_t firstcond;
+  uint8_t padding[3];
+} sh_t16_it_t;
+
+bool sh_t16_parse_it(sh_t16_it_t *it, uint16_t inst, uintptr_t pc);
+void sh_t16_rewrite_it_else(uint16_t *buf, uint16_t imm9, sh_t16_it_t *it);
+void sh_t16_rewrite_it_then(uint16_t *buf, uint16_t imm12);
+
+size_t sh_t16_get_rewrite_inst_len(uint16_t inst);
+size_t sh_t16_rewrite(uint16_t *buf, uint16_t inst, uintptr_t pc, sh_txx_rewrite_info_t *rinfo);
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_t32.c b/app/src/main/cpp/shadowhook/arch/arm/sh_t32.c
new file mode 100644
index 0000000..bb9e859
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_t32.c
@@ -0,0 +1,408 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_t32.h"
+
+#include <inttypes.h>
+#include <stdint.h>
+
+#include "sh_log.h"
+#include "sh_util.h"
+
+// https://developer.arm.com/documentation/ddi0406/latest
+// https://developer.arm.com/documentation/ddi0597/latest
+
+typedef enum {
+  IGNORED = 0,
+  B_T3,
+  B_T4,
+  BL_IMM_T1,
+  BLX_IMM_T2,
+  ADR_T2,
+  ADR_T3,
+  LDR_LIT_T2,
+  LDR_LIT_PC_T2,
+  LDRB_LIT_T1,
+  LDRD_LIT_T1,
+  LDRH_LIT_T1,
+  LDRSB_LIT_T1,
+  LDRSH_LIT_T1,
+  PLD_LIT_T1,
+  PLI_LIT_T3,
+  TBB_T1,
+  TBH_T1,
+  VLDR_LIT_T1
+} sh_t32_type_t;
+
+static sh_t32_type_t sh_t32_get_type(uint32_t inst) {
+  if (((inst & 0xF800D000) == 0xF0008000) && ((inst & 0x03800000u) != 0x03800000u))
+    return B_T3;
+  else if ((inst & 0xF800D000) == 0xF0009000)
+    return B_T4;
+  else if ((inst & 0xF800D000) == 0xF000D000)
+    return BL_IMM_T1;
+  else if ((inst & 0xF800D000) == 0xF000C000)
+    return BLX_IMM_T2;
+  else if ((inst & 0xFBFF8000) == 0xF2AF0000)
+    return ADR_T2;
+  else if ((inst & 0xFBFF8000) == 0xF20F0000)
+    return ADR_T3;
+  else if ((inst & 0xFF7F0000) == 0xF85F0000)
+    return ((inst & 0x0000F000u) == 0x0000F000) ? LDR_LIT_PC_T2 : LDR_LIT_T2;
+  else if (((inst & 0xFF7F0000) == 0xF81F0000) && ((inst & 0xF000u) != 0xF000u))
+    return LDRB_LIT_T1;
+  else if ((inst & 0xFF7F0000) == 0xE95F0000)
+    return LDRD_LIT_T1;
+  else if (((inst & 0xFF7F0000) == 0xF83F0000) && ((inst & 0xF000u) != 0xF000u))
+    return LDRH_LIT_T1;
+  else if (((inst & 0xFF7F0000) == 0xF91F0000) && ((inst & 0xF000u) != 0xF000u))
+    return LDRSB_LIT_T1;
+  else if (((inst & 0xFF7F0000) == 0xF93F0000) && ((inst & 0xF000u) != 0xF000u))
+    return LDRSH_LIT_T1;
+  else if ((inst & 0xFF7FF000) == 0xF81FF000)
+    return PLD_LIT_T1;
+  else if ((inst & 0xFF7FF000) == 0xF91FF000)
+    return PLI_LIT_T3;
+  else if ((inst & 0xFFF0FFF0) == 0xE8D0F000)
+    return TBB_T1;
+  else if ((inst & 0xFFF0FFF0) == 0xE8D0F010)
+    return TBH_T1;
+  else if ((inst & 0xFF3F0C00) == 0xED1F0800)
+    return VLDR_LIT_T1;
+  else
+    return IGNORED;
+}
+
+size_t sh_t32_get_rewrite_inst_len(uint16_t high_inst, uint16_t low_inst) {
+  static uint8_t map[] = {
+      4,   // IGNORED
+      12,  // B_T3
+      8,   // B_T4
+      12,  // BL_IMM_T1
+      12,  // BLX_IMM_T2
+      12,  // ADR_T2
+      12,  // ADR_T3
+      16,  // LDR_LIT_T2
+      24,  // LDR_LIT_PC_T2
+      16,  // LDRB_LIT_T1
+      16,  // LDRD_LIT_T1
+      16,  // LDRH_LIT_T1
+      16,  // LDRSB_LIT_T1
+      16,  // LDRSH_LIT_T1
+      20,  // PLD_LIT_T1
+      20,  // PLI_LIT_T3
+      32,  // TBB_T1
+      32,  // TBH_T1
+      24   // VLDR_LIT_T1
+  };
+
+  uint32_t inst = (uint32_t)(high_inst << 16u) | low_inst;
+  return (size_t)(map[sh_t32_get_type(inst)]);
+}
+
+static size_t sh_t32_rewrite_b(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                               sh_t32_type_t type, sh_txx_rewrite_info_t *rinfo) {
+  uint32_t j1 = SH_UTIL_GET_BIT_16(low_inst, 13);
+  uint32_t j2 = SH_UTIL_GET_BIT_16(low_inst, 11);
+  uint32_t s = SH_UTIL_GET_BIT_16(high_inst, 10);
+  uint32_t i1 = !(j1 ^ s);
+  uint32_t i2 = !(j2 ^ s);
+
+  uint32_t addr;
+  if (type == B_T3) {
+    uint32_t x =
+        (s << 20u) | (j2 << 19u) | (j1 << 18u) | ((high_inst & 0x3Fu) << 12u) | ((low_inst & 0x7FFu) << 1u);
+    uint32_t imm32 = SH_UTIL_SIGN_EXTEND_32(x, 21u);
+    addr = SH_UTIL_SET_BIT0(pc + imm32);  // thumb -> thumb
+  } else if (type == B_T4) {
+    uint32_t x =
+        (s << 24u) | (i1 << 23u) | (i2 << 22u) | ((high_inst & 0x3FFu) << 12u) | ((low_inst & 0x7FFu) << 1u);
+    uint32_t imm32 = SH_UTIL_SIGN_EXTEND_32(x, 25u);
+    addr = SH_UTIL_SET_BIT0(pc + imm32);  // thumb -> thumb
+  } else if (type == BL_IMM_T1) {
+    uint32_t x =
+        (s << 24u) | (i1 << 23u) | (i2 << 22u) | ((high_inst & 0x3FFu) << 12u) | ((low_inst & 0x7FFu) << 1u);
+    uint32_t imm32 = SH_UTIL_SIGN_EXTEND_32(x, 25u);
+    addr = SH_UTIL_SET_BIT0(pc + imm32);  // thumb -> thumb
+  } else                                  // type == BLX_IMM_T2
+  {
+    uint32_t x =
+        (s << 24u) | (i1 << 23u) | (i2 << 22u) | ((high_inst & 0x3FFu) << 12u) | ((low_inst & 0x7FEu) << 1u);
+    uint32_t imm32 = SH_UTIL_SIGN_EXTEND_32(x, 25u);
+    // In BL and BLX instructions, only when the target instruction set is "arm",
+    // you need to do 4-byte alignment for PC.
+    addr = SH_UTIL_ALIGN_4(pc) + imm32;  // thumb -> arm, align4
+  }
+  addr = sh_txx_fix_addr(addr, rinfo);
+
+  size_t idx = 0;
+  if (type == B_T3) {
+    uint32_t cond = SH_UTIL_GET_BITS_16(high_inst, 9, 6);
+    buf[idx++] = 0xD000u | (uint16_t)(cond << 8u);  // B<c> #0
+    buf[idx++] = 0xE003;                            // B #6
+  } else if (type == BL_IMM_T1 || type == BLX_IMM_T2) {
+    buf[idx++] = 0xF20F;  // ADD LR, PC, #9
+    buf[idx++] = 0x0E09;  // ...
+  }
+  buf[idx++] = 0xF8DF;  // LDR.W PC, [PC]
+  buf[idx++] = 0xF000;  // ...
+  buf[idx++] = addr & 0xFFFFu;
+  buf[idx++] = addr >> 16u;
+  return idx * 2;  // 8 or 12
+}
+
+static size_t sh_t32_rewrite_adr(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                                 sh_t32_type_t type, sh_txx_rewrite_info_t *rinfo) {
+  uint32_t rt = SH_UTIL_GET_BITS_16(low_inst, 11, 8);  // r0 - r14
+  uint32_t i = SH_UTIL_GET_BIT_16(high_inst, 10);
+  uint32_t imm3 = SH_UTIL_GET_BITS_16(low_inst, 14, 12);
+  uint32_t imm8 = SH_UTIL_GET_BITS_16(low_inst, 7, 0);
+  uint32_t imm32 = (i << 11u) | (imm3 << 8u) | imm8;
+  uint32_t addr = (type == ADR_T2 ? (SH_UTIL_ALIGN_4(pc) - imm32) : (SH_UTIL_ALIGN_4(pc) + imm32));
+  if (sh_txx_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  buf[0] = 0xF8DF;                      // LDR.W Rt, [PC, #4]
+  buf[1] = (uint16_t)(rt << 12u) + 4u;  // ...
+  buf[2] = 0xE002;                      // B #4
+  buf[3] = 0xBF00;                      // NOP
+  buf[4] = addr & 0xFFFFu;
+  buf[5] = addr >> 16u;
+  return 12;
+}
+
+static size_t sh_t32_rewrite_ldr(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                                 sh_t32_type_t type, sh_txx_rewrite_info_t *rinfo) {
+  uint32_t u = SH_UTIL_GET_BIT_16(high_inst, 7);
+  uint32_t rt = SH_UTIL_GET_BITS_16(low_inst, 15, 12);  // r0 - r15
+  uint32_t rt2 = 0;                                     // r0 - r15
+  uint32_t addr;
+
+  if (type == LDRD_LIT_T1) {
+    rt2 = SH_UTIL_GET_BITS_16(low_inst, 11, 8);
+    uint32_t imm8 = SH_UTIL_GET_BITS_16(low_inst, 7, 0);
+    addr = (u ? SH_UTIL_ALIGN_4(pc) + (imm8 << 2u) : SH_UTIL_ALIGN_4(pc) - (imm8 << 2u));
+  } else {
+    uint32_t imm12 = (uint32_t)SH_UTIL_GET_BITS_16(low_inst, 11, 0);
+    addr = (u ? SH_UTIL_ALIGN_4(pc) + imm12 : SH_UTIL_ALIGN_4(pc) - imm12);
+  }
+  if (sh_txx_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  if (type == LDR_LIT_PC_T2 && rt == 0xF)  // Rt == PC
+  {
+    buf[0] = 0xB403;          // PUSH {R0, R1}
+    buf[1] = 0xBF00;          // NOP
+    buf[2] = 0xF8DF;          // LDR.W R0, [PC, #4]
+    buf[3] = 0x0004;          // ...
+    buf[4] = 0xE002;          // B #4
+    buf[5] = 0xBF00;          // NOP
+    buf[6] = addr & 0xFFFFu;  //
+    buf[7] = addr >> 16u;     //
+    buf[8] = 0xF8D0;          // LDR.W R0, [R0]
+    buf[9] = 0x0000;          // ...
+    buf[10] = 0x9001;         // STR R0, [SP, #4]
+    buf[11] = 0xBD01;         // POP {R0, PC}
+    return 24;
+  } else {
+    buf[0] = 0xF8DF;                      // LDR.W Rt, [PC, #4]
+    buf[1] = (uint16_t)(rt << 12u) | 4u;  // ...
+    buf[2] = 0xE002;                      // B #4
+    buf[3] = 0xBF00;                      // NOP
+    buf[4] = addr & 0xFFFFu;
+    buf[5] = addr >> 16u;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wswitch"
+    switch (type) {
+      case LDR_LIT_T2:
+        buf[6] = (uint16_t)(0xF8D0 + rt);  // LDR.W Rt, [Rt]
+        buf[7] = (uint16_t)(rt << 12u);    // ...
+        break;
+      case LDRB_LIT_T1:
+        buf[6] = (uint16_t)(0xF890 + rt);  // LDRB.W Rt, [Rt]
+        buf[7] = (uint16_t)(rt << 12u);    // ...
+        break;
+      case LDRD_LIT_T1:
+        buf[6] = (uint16_t)(0xE9D0 + rt);                        // LDRD Rt, Rt2, [Rt]
+        buf[7] = (uint16_t)(rt << 12u) + (uint16_t)(rt2 << 8u);  // ...
+        break;
+      case LDRH_LIT_T1:
+        buf[6] = (uint16_t)(0xF8B0 + rt);  // LDRH.W Rt, [Rt]
+        buf[7] = (uint16_t)(rt << 12u);    // ...
+        break;
+      case LDRSB_LIT_T1:
+        buf[6] = (uint16_t)(0xF990 + rt);  // LDRSB.W Rt, [Rt]
+        buf[7] = (uint16_t)(rt << 12u);    // ...
+        break;
+      case LDRSH_LIT_T1:
+        buf[6] = (uint16_t)(0xF9B0 + rt);  // LDRSH.W Rt, [Rt]
+        buf[7] = (uint16_t)(rt << 12u);    // ...
+        break;
+    }
+#pragma clang diagnostic pop
+    return 16;
+  }
+}
+
+static size_t sh_t32_rewrite_pl(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                                sh_t32_type_t type, sh_txx_rewrite_info_t *rinfo) {
+  uint32_t u = SH_UTIL_GET_BIT_16(high_inst, 7);
+  uint32_t imm12 = SH_UTIL_GET_BITS_16(low_inst, 11, 0);
+  uint32_t addr = (u ? SH_UTIL_ALIGN_4(pc) + imm12 : SH_UTIL_ALIGN_4(pc) - imm12);
+  addr = sh_txx_fix_addr(addr, rinfo);
+
+  buf[0] = 0xB401;  // PUSH {R0}
+  buf[1] = 0xBF00;  // NOP
+  buf[2] = 0xF8DF;  // LDR.W R0, [PC, #8]
+  buf[3] = 0x0008;  // ...
+  if (type == PLD_LIT_T1) {
+    buf[4] = 0xF890;  // PLD [R0]
+    buf[5] = 0xF000;  // ...
+  } else {
+    buf[4] = 0xF990;  // PLI [R0]
+    buf[5] = 0xF000;  // ...
+  }
+  buf[6] = 0xBC01;  // POP {R0}
+  buf[7] = 0xE001;  // B #2
+  buf[8] = addr & 0xFFFFu;
+  buf[9] = addr >> 16u;
+  return 20;
+}
+
+static size_t sh_t32_rewrite_tb(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                                sh_t32_type_t type, sh_txx_rewrite_info_t *rinfo) {
+  // If TBB/TBH is not the last instruction that needs to be rewritten,
+  // the rewriting can NOT be completed.
+  uintptr_t target_addr = SH_UTIL_CLEAR_BIT0(pc - 4);
+  if (target_addr + 4 != rinfo->end_addr) return 0;  // rewrite failed
+
+  uint32_t rn = SH_UTIL_GET_BITS_16(high_inst, 3, 0);
+  uint32_t rm = SH_UTIL_GET_BITS_16(low_inst, 3, 0);
+  uint32_t rx, ry;  // r0 - r7
+  for (rx = 7;; --rx)
+    if (rx != rn && rx != rm) break;
+  for (ry = 7;; --ry)
+    if (ry != rn && ry != rm && ry != rx) break;
+
+  buf[0] = (uint16_t)(0xB500u | (1u << rx) | (1u << ry));  // PUSH {Rx, Ry, LR}
+  buf[1] = 0xBF00;                                         // NOP
+  buf[2] = 0xF8DF;                                         // LDR.W Rx, [PC, #20]
+  buf[3] = (uint16_t)(rx << 12u) | 20u;                    // ...
+  if (type == TBB_T1) {
+    buf[4] = (uint16_t)(0xEB00u | (rn == 0xF ? rx : rn));  // ADD.W Ry, Rx|Rn, Rm
+    buf[5] = (uint16_t)(0x0000u | (ry << 8u) | rm);        // ...
+    buf[6] = (uint16_t)(0x7800u | (ry << 3u) | ry);        // LDRB Ry, [Ry]
+    buf[7] = 0xBF00;                                       // NOP
+  } else {
+    buf[4] = (uint16_t)(0xEB00u | (rn == 0xF ? rx : rn));  // ADD.W Ry, Rx|Rn, Rm, LSL #1
+    buf[5] = (uint16_t)(0x0040u | (ry << 8u) | rm);        // ...
+    buf[6] = (uint16_t)(0x8800u | (ry << 3u) | ry);        // LDRH Ry, [Ry]
+    buf[7] = 0xBF00;                                       // NOP
+  }
+  buf[8] = (uint16_t)(0xEB00u | rx);                        // ADD Rx, Rx, Ry, LSL #1
+  buf[9] = (uint16_t)(0x0040u | (rx << 8u) | ry);           // ...
+  buf[10] = (uint16_t)(0x3001u | (rx << 8u));               // ADD Rx, #1
+  buf[11] = (uint16_t)(0x9002u | (rx << 8u));               // STR Rx, [SP, #8]
+  buf[12] = (uint16_t)(0xBD00u | (1u << rx) | (1u << ry));  // POP {Rx, Ry, PC}
+  buf[13] = 0xBF00;                                         // NOP
+  buf[14] = pc & 0xFFFFu;
+  buf[15] = pc >> 16u;
+  return 32;
+}
+
+static size_t sh_t32_rewrite_vldr(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                                  sh_txx_rewrite_info_t *rinfo) {
+  uint32_t u = SH_UTIL_GET_BIT_16(high_inst, 7);
+  uint32_t D = SH_UTIL_GET_BIT_16(high_inst, 6);
+  uint32_t vd = SH_UTIL_GET_BITS_16(low_inst, 15, 12);
+  uint32_t size = SH_UTIL_GET_BITS_16(low_inst, 9, 8);
+  uint32_t imm8 = SH_UTIL_GET_BITS_16(low_inst, 7, 0);
+  uint32_t esize = (8u << size);
+  uint32_t imm32 = (esize == 16 ? imm8 << 1u : imm8 << 2u);
+  uint32_t addr = (u ? SH_UTIL_ALIGN_4(pc) + imm32 : SH_UTIL_ALIGN_4(pc) - imm32);
+  if (sh_txx_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  buf[0] = 0xB401;                                       // PUSH {R0}
+  buf[1] = 0xBF00;                                       // NOP
+  buf[2] = 0xF8DF;                                       // LDR.W R0, [PC, #4]
+  buf[3] = 0x0004;                                       // ...
+  buf[4] = 0xE002;                                       // B #4
+  buf[5] = 0xBF00;                                       // NOP
+  buf[6] = addr & 0xFFFFu;                               //
+  buf[7] = addr >> 16u;                                  //
+  buf[8] = (uint16_t)(0xED90u | D << 6u);                // VLDR Sd|Dd, [R0]
+  buf[9] = (uint16_t)(0x800u | vd << 12u | size << 8u);  // ...
+  buf[10] = 0xBC01;                                      // POP {R0}
+  buf[11] = 0xBF00;                                      // NOP
+  return 24;
+}
+
+size_t sh_t32_rewrite(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                      sh_txx_rewrite_info_t *rinfo) {
+  uint32_t inst = (uint32_t)(high_inst << 16u) | low_inst;
+  sh_t32_type_t type = sh_t32_get_type(inst);
+  SH_LOG_INFO("t32 rewrite: type %d, high inst %" PRIx16 ", low inst %" PRIx16, type, high_inst, low_inst);
+
+  if (type == B_T3 || type == B_T4 || type == BL_IMM_T1 || type == BLX_IMM_T2)
+    return sh_t32_rewrite_b(buf, high_inst, low_inst, pc, type, rinfo);
+  else if (type == ADR_T2 || type == ADR_T3)
+    return sh_t32_rewrite_adr(buf, high_inst, low_inst, pc, type, rinfo);
+  else if (type == LDR_LIT_T2 || type == LDR_LIT_PC_T2 || type == LDRB_LIT_T1 || type == LDRD_LIT_T1 ||
+           type == LDRH_LIT_T1 || type == LDRSB_LIT_T1 || type == LDRSH_LIT_T1)
+    return sh_t32_rewrite_ldr(buf, high_inst, low_inst, pc, type, rinfo);
+  else if (type == PLD_LIT_T1 || type == PLI_LIT_T3)
+    return sh_t32_rewrite_pl(buf, high_inst, low_inst, pc, type, rinfo);
+  else if (type == TBB_T1 || type == TBH_T1)
+    return sh_t32_rewrite_tb(buf, high_inst, low_inst, pc, type, rinfo);
+  else if (type == VLDR_LIT_T1)
+    return sh_t32_rewrite_vldr(buf, high_inst, low_inst, pc, rinfo);
+  else {
+    // IGNORED
+    buf[0] = high_inst;
+    buf[1] = low_inst;
+    return 4;
+  }
+}
+
+size_t sh_t32_absolute_jump(uint16_t *buf, bool is_align4, uintptr_t addr) {
+  size_t i = 0;
+  if (!is_align4) buf[i++] = 0xBF00;  // NOP
+  buf[i++] = 0xF8DF;                  // LDR.W PC, [PC]
+  buf[i++] = 0xF000;                  // ...
+  buf[i++] = addr & 0xFFFFu;
+  buf[i++] = addr >> 16u;
+  return i * 2;
+}
+
+size_t sh_t32_relative_jump(uint16_t *buf, uintptr_t addr, uintptr_t pc) {
+  uint32_t imm32 = addr - pc;
+  uint32_t s = SH_UTIL_GET_BIT_32(imm32, 24);
+  uint32_t i1 = SH_UTIL_GET_BIT_32(imm32, 23);
+  uint32_t i2 = SH_UTIL_GET_BIT_32(imm32, 22);
+  uint32_t imm10 = SH_UTIL_GET_BITS_32(imm32, 21, 12);
+  uint32_t imm11 = SH_UTIL_GET_BITS_32(imm32, 11, 1);
+  uint32_t j1 = (!i1) ^ s;
+  uint32_t j2 = (!i2) ^ s;
+
+  buf[0] = (uint16_t)(0xF000u | (s << 10u) | imm10);
+  buf[1] = (uint16_t)(0x9000u | (j1 << 13u) | (j2 << 11u) | imm11);
+  return 4;
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_t32.h b/app/src/main/cpp/shadowhook/arch/arm/sh_t32.h
new file mode 100644
index 0000000..1dc1179
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_t32.h
@@ -0,0 +1,36 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "sh_txx.h"
+
+size_t sh_t32_get_rewrite_inst_len(uint16_t high_inst, uint16_t low_inst);
+size_t sh_t32_rewrite(uint16_t *buf, uint16_t high_inst, uint16_t low_inst, uintptr_t pc,
+                      sh_txx_rewrite_info_t *rinfo);
+
+size_t sh_t32_absolute_jump(uint16_t *buf, bool is_align4, uintptr_t addr);
+size_t sh_t32_relative_jump(uint16_t *buf, uintptr_t addr, uintptr_t pc);
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_txx.c b/app/src/main/cpp/shadowhook/arch/arm/sh_txx.c
new file mode 100644
index 0000000..79cefdb
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_txx.c
@@ -0,0 +1,60 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_txx.h"
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "sh_log.h"
+#include "sh_util.h"
+
+bool sh_txx_is_addr_need_fix(uintptr_t addr, sh_txx_rewrite_info_t *rinfo) {
+  return (rinfo->start_addr <= addr && addr < rinfo->end_addr);
+}
+
+uintptr_t sh_txx_fix_addr(uintptr_t addr, sh_txx_rewrite_info_t *rinfo) {
+  bool is_thumb = SH_UTIL_IS_THUMB(addr);
+
+  if (is_thumb) addr = SH_UTIL_CLEAR_BIT0(addr);
+
+  if (rinfo->start_addr <= addr && addr < rinfo->end_addr) {
+    uintptr_t cursor_addr = rinfo->start_addr;
+    size_t offset = 0;
+    for (size_t i = 0; i < rinfo->inst_lens_cnt; i++) {
+      if (cursor_addr >= addr) break;
+      cursor_addr += 2;
+      offset += rinfo->inst_lens[i];
+    }
+    uintptr_t fixed_addr = (uintptr_t)rinfo->buf + offset;
+    if (is_thumb) fixed_addr = SH_UTIL_SET_BIT0(fixed_addr);
+
+    SH_LOG_INFO("txx rewrite: fix addr %" PRIxPTR " -> %" PRIxPTR, addr, fixed_addr);
+    return fixed_addr;
+  }
+
+  if (is_thumb) addr = SH_UTIL_SET_BIT0(addr);
+  return addr;
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm/sh_txx.h b/app/src/main/cpp/shadowhook/arch/arm/sh_txx.h
new file mode 100644
index 0000000..f5b9fae
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm/sh_txx.h
@@ -0,0 +1,39 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct {
+  uintptr_t start_addr;
+  uintptr_t end_addr;
+  uint16_t *buf;
+  size_t buf_offset;
+  size_t inst_lens[13];  // 26 / 2 = 13
+  size_t inst_lens_cnt;
+} sh_txx_rewrite_info_t;
+
+bool sh_txx_is_addr_need_fix(uintptr_t addr, sh_txx_rewrite_info_t *rinfo);
+uintptr_t sh_txx_fix_addr(uintptr_t addr, sh_txx_rewrite_info_t *rinfo);
diff --git a/app/src/main/cpp/shadowhook/arch/arm64/sh_a64.c b/app/src/main/cpp/shadowhook/arch/arm64/sh_a64.c
new file mode 100644
index 0000000..cd9546b
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm64/sh_a64.c
@@ -0,0 +1,310 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_a64.h"
+
+#include <inttypes.h>
+#include <sh_util.h>
+#include <stdint.h>
+
+#include "sh_log.h"
+
+// https://developer.arm.com/documentation/ddi0487/latest
+// https://developer.arm.com/documentation/ddi0602/latest
+
+typedef enum {
+  IGNORED = 0,
+  B,
+  B_COND,
+  BL,
+  ADR,
+  ADRP,
+  LDR_LIT_32,
+  LDR_LIT_64,
+  LDRSW_LIT,
+  PRFM_LIT,
+  LDR_SIMD_LIT_32,
+  LDR_SIMD_LIT_64,
+  LDR_SIMD_LIT_128,
+  CBZ,
+  CBNZ,
+  TBZ,
+  TBNZ
+} sh_a64_type_t;
+
+static sh_a64_type_t sh_a64_get_type(uint32_t inst) {
+  if ((inst & 0xFC000000) == 0x14000000)
+    return B;
+  else if ((inst & 0xFF000010) == 0x54000000)
+    return B_COND;
+  else if ((inst & 0xFC000000) == 0x94000000)
+    return BL;
+  else if ((inst & 0x9F000000) == 0x10000000)
+    return ADR;
+  else if ((inst & 0x9F000000) == 0x90000000)
+    return ADRP;
+  else if ((inst & 0xFF000000) == 0x18000000)
+    return LDR_LIT_32;
+  else if ((inst & 0xFF000000) == 0x58000000)
+    return LDR_LIT_64;
+  else if ((inst & 0xFF000000) == 0x98000000)
+    return LDRSW_LIT;
+  else if ((inst & 0xFF000000) == 0xD8000000)
+    return PRFM_LIT;
+  else if ((inst & 0xFF000000) == 0x1C000000)
+    return LDR_SIMD_LIT_32;
+  else if ((inst & 0xFF000000) == 0x5C000000)
+    return LDR_SIMD_LIT_64;
+  else if ((inst & 0xFF000000) == 0x9C000000)
+    return LDR_SIMD_LIT_128;
+  else if ((inst & 0x7F000000u) == 0x34000000)
+    return CBZ;
+  else if ((inst & 0x7F000000u) == 0x35000000)
+    return CBNZ;
+  else if ((inst & 0x7F000000u) == 0x36000000)
+    return TBZ;
+  else if ((inst & 0x7F000000u) == 0x37000000)
+    return TBNZ;
+  else
+    return IGNORED;
+}
+
+size_t sh_a64_get_rewrite_inst_len(uint32_t inst) {
+  static uint8_t map[] = {
+      4,   // IGNORED
+      20,  // B
+      28,  // B_COND
+      20,  // BL
+      16,  // ADR
+      16,  // ADRP
+      20,  // LDR_LIT_32
+      20,  // LDR_LIT_64
+      20,  // LDRSW_LIT
+      28,  // PRFM_LIT
+      28,  // LDR_SIMD_LIT_32
+      28,  // LDR_SIMD_LIT_64
+      28,  // LDR_SIMD_LIT_128
+      24,  // CBZ
+      24,  // CBNZ
+      24,  // TBZ
+      24   // TBNZ
+  };
+
+  return (size_t)(map[sh_a64_get_type(inst)]);
+}
+
+static bool sh_a64_is_addr_need_fix(uintptr_t addr, sh_a64_rewrite_info_t *rinfo) {
+  return (rinfo->start_addr <= addr && addr < rinfo->end_addr);
+}
+
+static uintptr_t sh_a64_fix_addr(uintptr_t addr, sh_a64_rewrite_info_t *rinfo) {
+  if (rinfo->start_addr <= addr && addr < rinfo->end_addr) {
+    uintptr_t cursor_addr = rinfo->start_addr;
+    size_t offset = 0;
+    for (size_t i = 0; i < rinfo->inst_lens_cnt; i++) {
+      if (cursor_addr >= addr) break;
+      cursor_addr += 4;
+      offset += rinfo->inst_lens[i];
+    }
+    uintptr_t fixed_addr = (uintptr_t)rinfo->buf + offset;
+    SH_LOG_INFO("a64 rewrite: fix addr %" PRIxPTR " -> %" PRIxPTR, addr, fixed_addr);
+    return fixed_addr;
+  }
+
+  return addr;
+}
+
+static size_t sh_a64_rewrite_b(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_type_t type,
+                               sh_a64_rewrite_info_t *rinfo) {
+  uint64_t imm64;
+  if (type == B_COND) {
+    uint64_t imm19 = SH_UTIL_GET_BITS_32(inst, 23, 5);
+    imm64 = SH_UTIL_SIGN_EXTEND_64(imm19 << 2u, 21u);
+  } else {
+    uint64_t imm26 = SH_UTIL_GET_BITS_32(inst, 25, 0);
+    imm64 = SH_UTIL_SIGN_EXTEND_64(imm26 << 2u, 28u);
+  }
+  uint64_t addr = pc + imm64;
+  addr = sh_a64_fix_addr(addr, rinfo);
+
+  size_t idx = 0;
+  if (type == B_COND) {
+    buf[idx++] = (inst & 0xFF00001F) | 0x40u;  // B.<cond> #8
+    buf[idx++] = 0x14000006;                   // B #24
+  }
+  buf[idx++] = 0x58000051;  // LDR X17, #8
+  buf[idx++] = 0x14000003;  // B #12
+  buf[idx++] = addr & 0xFFFFFFFF;
+  buf[idx++] = addr >> 32u;
+  if (type == BL)
+    buf[idx++] = 0xD63F0220;  // BLR X17
+  else
+    buf[idx++] = 0xD61F0220;  // BR X17
+  return idx * 4;             // 20 or 28
+}
+
+static size_t sh_a64_rewrite_adr(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_type_t type,
+                                 sh_a64_rewrite_info_t *rinfo) {
+  uint32_t xd = SH_UTIL_GET_BITS_32(inst, 4, 0);
+  uint64_t immlo = SH_UTIL_GET_BITS_32(inst, 30, 29);
+  uint64_t immhi = SH_UTIL_GET_BITS_32(inst, 23, 5);
+  uint64_t addr;
+  if (type == ADR)
+    addr = pc + SH_UTIL_SIGN_EXTEND_64((immhi << 2u) | immlo, 21u);
+  else  // ADRP
+    addr = (pc & 0xFFFFFFFFFFFFF000) + SH_UTIL_SIGN_EXTEND_64((immhi << 14u) | (immlo << 12u), 33u);
+  if (sh_a64_is_addr_need_fix(addr, rinfo)) return 0;  // rewrite failed
+
+  buf[0] = 0x58000040u | xd;  // LDR Xd, #8
+  buf[1] = 0x14000003;        // B #12
+  buf[2] = addr & 0xFFFFFFFF;
+  buf[3] = addr >> 32u;
+  return 16;
+}
+
+static size_t sh_a64_rewrite_ldr(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_type_t type,
+                                 sh_a64_rewrite_info_t *rinfo) {
+  uint32_t rt = SH_UTIL_GET_BITS_32(inst, 4, 0);
+  uint64_t imm19 = SH_UTIL_GET_BITS_32(inst, 23, 5);
+  uint64_t offset = SH_UTIL_SIGN_EXTEND_64((imm19 << 2u), 21u);
+  uint64_t addr = pc + offset;
+
+  if (sh_a64_is_addr_need_fix(addr, rinfo)) {
+    if (type != PRFM_LIT) return 0;  // rewrite failed
+    addr = sh_a64_fix_addr(addr, rinfo);
+  }
+
+  if (type == LDR_LIT_32 || type == LDR_LIT_64 || type == LDRSW_LIT) {
+    buf[0] = 0x58000060u | rt;  // LDR Xt, #12
+    if (type == LDR_LIT_32)
+      buf[1] = 0xB9400000 | rt | (rt << 5u);  // LDR Wt, [Xt]
+    else if (type == LDR_LIT_64)
+      buf[1] = 0xF9400000 | rt | (rt << 5u);  // LDR Xt, [Xt]
+    else
+      // LDRSW_LIT
+      buf[1] = 0xB9800000 | rt | (rt << 5u);  // LDRSW Xt, [Xt]
+    buf[2] = 0x14000003;                      // B #12
+    buf[3] = addr & 0xFFFFFFFF;
+    buf[4] = addr >> 32u;
+    return 20;
+  } else {
+    buf[0] = 0xA93F47F0;  // STP X16, X17, [SP, -0x10]
+    buf[1] = 0x58000091;  // LDR X17, #16
+    if (type == PRFM_LIT)
+      buf[2] = 0xF9800220 | rt;  // PRFM Rt, [X17]
+    else if (type == LDR_SIMD_LIT_32)
+      buf[2] = 0xBD400220 | rt;  // LDR St, [X17]
+    else if (type == LDR_SIMD_LIT_64)
+      buf[2] = 0xFD400220 | rt;  // LDR Dt, [X17]
+    else
+      // LDR_SIMD_LIT_128
+      buf[2] = 0x3DC00220u | rt;  // LDR Qt, [X17]
+    buf[3] = 0xF85F83F1;          // LDR X17, [SP, -0x8]
+    buf[4] = 0x14000003;          // B #12
+    buf[5] = addr & 0xFFFFFFFF;
+    buf[6] = addr >> 32u;
+    return 28;
+  }
+}
+
+static size_t sh_a64_rewrite_cb(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_rewrite_info_t *rinfo) {
+  uint64_t imm19 = SH_UTIL_GET_BITS_32(inst, 23, 5);
+  uint64_t offset = SH_UTIL_SIGN_EXTEND_64((imm19 << 2u), 21u);
+  uint64_t addr = pc + offset;
+  addr = sh_a64_fix_addr(addr, rinfo);
+
+  buf[0] = (inst & 0xFF00001F) | 0x40u;  // CB(N)Z Rt, #8
+  buf[1] = 0x14000005;                   // B #20
+  buf[2] = 0x58000051;                   // LDR X17, #8
+  buf[3] = 0xd61f0220;                   // BR X17
+  buf[4] = addr & 0xFFFFFFFF;
+  buf[5] = addr >> 32u;
+  return 24;
+}
+
+static size_t sh_a64_rewrite_tb(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_rewrite_info_t *rinfo) {
+  uint64_t imm14 = SH_UTIL_GET_BITS_32(inst, 18, 5);
+  uint64_t offset = SH_UTIL_SIGN_EXTEND_64((imm14 << 2u), 16u);
+  uint64_t addr = pc + offset;
+  addr = sh_a64_fix_addr(addr, rinfo);
+
+  buf[0] = (inst & 0xFFF8001F) | 0x40u;  // TB(N)Z Rt, #<imm>, #8
+  buf[1] = 0x14000005;                   // B #20
+  buf[2] = 0x58000051;                   // LDR X17, #8
+  buf[3] = 0xd61f0220;                   // BR X17
+  buf[4] = addr & 0xFFFFFFFF;
+  buf[5] = addr >> 32u;
+  return 24;
+}
+
+size_t sh_a64_rewrite(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_rewrite_info_t *rinfo) {
+  sh_a64_type_t type = sh_a64_get_type(inst);
+  SH_LOG_INFO("a64 rewrite: type %d, inst %" PRIx32, type, inst);
+
+  if (type == B || type == B_COND || type == BL)
+    return sh_a64_rewrite_b(buf, inst, pc, type, rinfo);
+  else if (type == ADR || type == ADRP)
+    return sh_a64_rewrite_adr(buf, inst, pc, type, rinfo);
+  else if (type == LDR_LIT_32 || type == LDR_LIT_64 || type == LDRSW_LIT || type == PRFM_LIT ||
+           type == LDR_SIMD_LIT_32 || type == LDR_SIMD_LIT_64 || type == LDR_SIMD_LIT_128)
+    return sh_a64_rewrite_ldr(buf, inst, pc, type, rinfo);
+  else if (type == CBZ || type == CBNZ)
+    return sh_a64_rewrite_cb(buf, inst, pc, rinfo);
+  else if (type == TBZ || type == TBNZ)
+    return sh_a64_rewrite_tb(buf, inst, pc, rinfo);
+  else {
+    // IGNORED
+    buf[0] = inst;
+    return 4;
+  }
+}
+
+size_t sh_a64_absolute_jump_with_br(uint32_t *buf, uintptr_t addr) {
+  buf[0] = 0x58000051;  // LDR X17, #8
+  buf[1] = 0xd61f0220;  // BR X17
+  buf[2] = addr & 0xFFFFFFFF;
+  buf[3] = addr >> 32u;
+  return 16;
+}
+
+// Use RET instead of BR to bypass arm64 BTI.
+//
+// ref:
+// https://developer.arm.com/documentation/102433/0100/Jump-oriented-programming
+// https://developer.arm.com/documentation/ddi0602/2023-06/Base-Instructions/BTI--Branch-Target-Identification-?lang=en
+// https://github.com/torvalds/linux/commit/8ef8f360cf30be12382f89ff48a57fbbd9b31c14
+// https://android-review.googlesource.com/c/platform/bionic/+/1242754
+// https://developer.android.com/ndk/guides/abis#armv9_enabling_pac_and_bti_for_cc
+// https://developer.arm.com/documentation/100067/0612/armclang-Command-line-Options/-mbranch-protection
+size_t sh_a64_absolute_jump_with_ret(uint32_t *buf, uintptr_t addr) {
+  buf[0] = 0x58000051;  // LDR X17, #8
+  buf[1] = 0xd65f0220;  // RET X17
+  buf[2] = addr & 0xFFFFFFFF;
+  buf[3] = addr >> 32u;
+  return 16;
+}
+
+size_t sh_a64_relative_jump(uint32_t *buf, uintptr_t addr, uintptr_t pc) {
+  buf[0] = 0x14000000u | (((addr - pc) & 0x0FFFFFFFu) >> 2u);  // B <label>
+  return 4;
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm64/sh_a64.h b/app/src/main/cpp/shadowhook/arch/arm64/sh_a64.h
new file mode 100644
index 0000000..a51cd2e
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm64/sh_a64.h
@@ -0,0 +1,44 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+
+#include "sh_inst.h"
+
+typedef struct {
+  uintptr_t start_addr;
+  uintptr_t end_addr;
+  uint32_t *buf;
+  size_t buf_offset;
+  size_t inst_lens[4];
+  size_t inst_lens_cnt;
+} sh_a64_rewrite_info_t;
+
+size_t sh_a64_get_rewrite_inst_len(uint32_t inst);
+size_t sh_a64_rewrite(uint32_t *buf, uint32_t inst, uintptr_t pc, sh_a64_rewrite_info_t *rinfo);
+
+size_t sh_a64_absolute_jump_with_br(uint32_t *buf, uintptr_t addr);
+size_t sh_a64_absolute_jump_with_ret(uint32_t *buf, uintptr_t addr);
+size_t sh_a64_relative_jump(uint32_t *buf, uintptr_t addr, uintptr_t pc);
diff --git a/app/src/main/cpp/shadowhook/arch/arm64/sh_inst.c b/app/src/main/cpp/shadowhook/arch/arm64/sh_inst.c
new file mode 100644
index 0000000..7474a6c
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm64/sh_inst.c
@@ -0,0 +1,203 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_inst.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "sh_a64.h"
+#include "sh_config.h"
+#include "sh_enter.h"
+#include "sh_exit.h"
+#include "sh_log.h"
+#include "sh_sig.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "xdl.h"
+
+static int sh_inst_hook_rewrite(sh_inst_t *self, uintptr_t target_addr, uintptr_t *orig_addr,
+                                uintptr_t *orig_addr2) {
+  // backup original instructions (length: 4 or 16)
+  memcpy((void *)(self->backup), (void *)target_addr, self->backup_len);
+
+  // package the information passed to rewrite
+  sh_a64_rewrite_info_t rinfo;
+  rinfo.start_addr = target_addr;
+  rinfo.end_addr = target_addr + self->backup_len;
+  rinfo.buf = (uint32_t *)self->enter_addr;
+  rinfo.buf_offset = 0;
+  rinfo.inst_lens_cnt = self->backup_len / 4;
+  for (uintptr_t i = 0; i < self->backup_len; i += 4)
+    rinfo.inst_lens[i / 4] = sh_a64_get_rewrite_inst_len(*((uint32_t *)(target_addr + i)));
+
+  // rewrite original instructions (fill in enter)
+  uintptr_t pc = target_addr;
+  for (uintptr_t i = 0; i < self->backup_len; i += 4, pc += 4) {
+    size_t offset = sh_a64_rewrite((uint32_t *)(self->enter_addr + rinfo.buf_offset),
+                                   *((uint32_t *)(target_addr + i)), pc, &rinfo);
+    if (0 == offset) return SHADOWHOOK_ERRNO_HOOK_REWRITE_FAILED;
+    rinfo.buf_offset += offset;
+  }
+
+  // absolute jump back to remaining original instructions (fill in enter)
+  rinfo.buf_offset += sh_a64_absolute_jump_with_ret((uint32_t *)(self->enter_addr + rinfo.buf_offset),
+                                                    target_addr + self->backup_len);
+  sh_util_clear_cache(self->enter_addr, rinfo.buf_offset);
+
+  // save original function address
+  if (NULL != orig_addr) __atomic_store_n(orig_addr, self->enter_addr, __ATOMIC_SEQ_CST);
+  if (NULL != orig_addr2) __atomic_store_n(orig_addr2, self->enter_addr, __ATOMIC_SEQ_CST);
+  return 0;
+}
+
+#ifdef SH_CONFIG_TRY_WITH_EXIT
+
+// B: [-128M, +128M - 4]
+#define SH_INST_A64_B_RANGE_LOW  (134217728)
+#define SH_INST_A64_B_RANGE_HIGH (134217724)
+
+static int sh_inst_hook_with_exit(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo,
+                                  uintptr_t new_addr, uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  int r;
+  uintptr_t pc = target_addr;
+  self->backup_len = 4;
+
+  if (dlinfo->dli_ssize < self->backup_len) return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+
+  // alloc an exit for absolute jump
+  sh_a64_absolute_jump_with_br(self->exit, new_addr);
+  if (0 !=
+      (r = sh_exit_alloc(&self->exit_addr, (uint16_t *)&self->exit_type, pc, dlinfo, (uint8_t *)(self->exit),
+                         sizeof(self->exit), SH_INST_A64_B_RANGE_LOW, SH_INST_A64_B_RANGE_HIGH)))
+    return r;
+
+  // rewrite
+  if (0 != sh_util_mprotect(target_addr, self->backup_len, PROT_READ | PROT_WRITE | PROT_EXEC)) {
+    r = SHADOWHOOK_ERRNO_MPROT;
+    goto err;
+  }
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = sh_inst_hook_rewrite(self, target_addr, orig_addr, orig_addr2);
+  }
+  SH_SIG_CATCH() {
+    r = SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH;
+    goto err;
+  }
+  SH_SIG_EXIT
+  if (0 != r) goto err;
+
+  // relative jump to the exit by overwriting the head of original function
+  sh_a64_relative_jump(self->trampo, self->exit_addr, pc);
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+  if (0 != (r = sh_util_write_inst(target_addr, self->trampo, self->backup_len))) goto err;
+
+  SH_LOG_INFO("a64: hook (WITH EXIT) OK. target %" PRIxPTR " -> exit %" PRIxPTR " -> new %" PRIxPTR
+              " -> enter %" PRIxPTR " -> remaining %" PRIxPTR,
+              target_addr, self->exit_addr, new_addr, self->enter_addr, target_addr + self->backup_len);
+  return 0;
+
+err:
+  sh_exit_free(self->exit_addr, (uint16_t)self->exit_type, (uint8_t *)(self->exit), sizeof(self->exit));
+  self->exit_addr = 0;  // this is a flag for with-exit or without-exit
+  return r;
+}
+#endif
+
+static int sh_inst_hook_without_exit(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo,
+                                     uintptr_t new_addr, uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  int r;
+  self->backup_len = 16;
+
+  if (dlinfo->dli_ssize < self->backup_len) return SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+
+  // rewrite
+  if (0 != sh_util_mprotect(target_addr, self->backup_len, PROT_READ | PROT_WRITE | PROT_EXEC))
+    return SHADOWHOOK_ERRNO_MPROT;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = sh_inst_hook_rewrite(self, target_addr, orig_addr, orig_addr2);
+  }
+  SH_SIG_CATCH() {
+    return SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH;
+  }
+  SH_SIG_EXIT
+  if (0 != r) return r;
+
+  // absolute jump to new function address by overwriting the head of original function
+  sh_a64_absolute_jump_with_br(self->trampo, new_addr);
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+  if (0 != (r = sh_util_write_inst(target_addr, self->trampo, self->backup_len))) return r;
+
+  SH_LOG_INFO("a64: hook (WITHOUT EXIT) OK. target %" PRIxPTR " -> new %" PRIxPTR " -> enter %" PRIxPTR
+              " -> remaining %" PRIxPTR,
+              target_addr, new_addr, self->enter_addr, target_addr + self->backup_len);
+  return 0;
+}
+
+int sh_inst_hook(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo, uintptr_t new_addr,
+                 uintptr_t *orig_addr, uintptr_t *orig_addr2) {
+  self->enter_addr = sh_enter_alloc();
+  if (0 == self->enter_addr) return SHADOWHOOK_ERRNO_HOOK_ENTER;
+
+  int r;
+#ifdef SH_CONFIG_TRY_WITH_EXIT
+  if (0 == (r = sh_inst_hook_with_exit(self, target_addr, dlinfo, new_addr, orig_addr, orig_addr2))) return r;
+#endif
+  if (0 == (r = sh_inst_hook_without_exit(self, target_addr, dlinfo, new_addr, orig_addr, orig_addr2)))
+    return r;
+
+  // hook failed
+  if (NULL != orig_addr) *orig_addr = 0;
+  if (NULL != orig_addr2) *orig_addr2 = 0;
+  sh_enter_free(self->enter_addr);
+  return r;
+}
+
+int sh_inst_unhook(sh_inst_t *self, uintptr_t target_addr) {
+  int r;
+
+  // restore the instructions at the target address
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    r = memcmp((void *)target_addr, self->trampo, self->backup_len);
+  }
+  SH_SIG_CATCH() {
+    return SHADOWHOOK_ERRNO_UNHOOK_CMP_CRASH;
+  }
+  SH_SIG_EXIT
+  if (0 != r) return SHADOWHOOK_ERRNO_UNHOOK_TRAMPO_MISMATCH;
+  if (0 != (r = sh_util_write_inst(target_addr, self->backup, self->backup_len))) return r;
+  __atomic_thread_fence(__ATOMIC_SEQ_CST);
+
+  // free memory space for exit
+  if (0 != self->exit_addr)
+    if (0 != (r = sh_exit_free(self->exit_addr, (uint16_t)self->exit_type, (uint8_t *)(self->exit),
+                               sizeof(self->exit))))
+      return r;
+
+  // free memory space for enter
+  sh_enter_free(self->enter_addr);
+
+  SH_LOG_INFO("a64: unhook OK. target %" PRIxPTR, target_addr);
+  return 0;
+}
diff --git a/app/src/main/cpp/shadowhook/arch/arm64/sh_inst.h b/app/src/main/cpp/shadowhook/arch/arm64/sh_inst.h
new file mode 100644
index 0000000..5988b68
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/arch/arm64/sh_inst.h
@@ -0,0 +1,42 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "xdl.h"
+
+typedef struct {
+  uint32_t trampo[4];   // align 16 // length == backup_len
+  uint8_t backup[16];   // align 16
+  uint32_t backup_len;  // == 4 or 16
+  uint32_t exit_type;
+  uintptr_t exit_addr;
+  uint32_t exit[4];
+  uintptr_t enter_addr;
+} sh_inst_t;
+
+int sh_inst_hook(sh_inst_t *self, uintptr_t target_addr, xdl_info_t *dlinfo, uintptr_t new_addr,
+                 uintptr_t *orig_addr, uintptr_t *orig_addr2);
+int sh_inst_unhook(sh_inst_t *self, uintptr_t target_addr);
diff --git a/app/src/main/cpp/shadowhook/common/bytesig.c b/app/src/main/cpp/shadowhook/common/bytesig.c
new file mode 100644
index 0000000..8568279
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/bytesig.c
@@ -0,0 +1,291 @@
+// Copyright (c) 2021-2023 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+// version 1.0.4
+
+#include "bytesig.h"
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <pthread.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#define BYTESIG_DEBUG 0
+
+#if BYTESIG_DEBUG
+#include <android/log.h>
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
+#define BYTESIG_LOG(fmt, ...) __android_log_print(ANDROID_LOG_INFO, "bytesig_tag", fmt, ##__VA_ARGS__)
+#pragma clang diagnostic pop
+#else
+#define BYTESIG_LOG(fmt, ...)
+#endif
+
+typedef enum {
+  BYTESIG_STATUS_UNAVAILABLE = 0,
+  BYTESIG_STATUS_SIG32 = 1,  // use sigset_t
+  BYTESIG_STATUS_SIG64 = 2   // use sigset64_t
+} bytesig_status_t;
+static bytesig_status_t bytesig_status = BYTESIG_STATUS_UNAVAILABLE;
+
+extern __attribute((weak)) int sigfillset64(sigset64_t *);
+extern __attribute((weak)) int sigemptyset64(sigset64_t *);
+extern __attribute((weak)) int sigaddset64(sigset64_t *, int);
+extern __attribute((weak)) int sigismember64(const sigset64_t *, int);
+
+typedef int (*bytesig_sigaction64_t)(int, const struct sigaction64 *, struct sigaction64 *);
+typedef int (*bytesig_sigaction_t)(int, const struct sigaction *, struct sigaction *);
+typedef int (*bytesig_sigprocmask64_t)(int, const sigset64_t *, sigset64_t *);
+typedef int (*bytesig_sigprocmask_t)(int, const sigset_t *, sigset_t *);
+
+static void *bytesig_sigaction;    // point to libc's sigaction64() or libc's sigaction()
+static void *bytesig_sigprocmask;  // point to libc's sigprocmask() or libc's sigprocmask64()
+
+__attribute__((constructor)) static void bytesig_ctor(void) {
+  void *libc = dlopen("libc.so", RTLD_LOCAL);
+  if (__predict_false(NULL == libc)) return;
+
+  if (__predict_true(NULL != sigfillset64 && NULL != sigemptyset64 && NULL != sigaddset64 &&
+                     NULL != sigismember64)) {
+    if (__predict_true(NULL != (bytesig_sigaction = dlsym(libc, "sigaction64")) &&
+                       NULL != (bytesig_sigprocmask = dlsym(libc, "sigprocmask64")))) {
+      bytesig_status = BYTESIG_STATUS_SIG64;
+      goto end;
+    }
+  }
+
+  if (__predict_true(NULL != (bytesig_sigaction = dlsym(libc, "sigaction")) &&
+                     NULL != (bytesig_sigprocmask = dlsym(libc, "sigprocmask")))) {
+    bytesig_status = BYTESIG_STATUS_SIG32;
+  }
+
+end:
+  dlclose(libc);
+}
+
+#define BYTESIG_PROTECTED_THREADS_MAX 256
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+typedef struct {
+  pid_t tids[BYTESIG_PROTECTED_THREADS_MAX];
+  sigjmp_buf *jbufs[BYTESIG_PROTECTED_THREADS_MAX];
+  union {
+    struct sigaction64 prev_action64;
+    struct sigaction prev_action;
+  };
+} bytesig_signal_t;
+#pragma clang diagnostic pop
+
+// array index is signal number, corresponds to signals 1 to 31, except 9 and 19
+static bytesig_signal_t *bytesig_signal_array[__SIGRTMIN];
+
+static void bytesig_sigorset64(sigset64_t *dest, sigset64_t *left, sigset64_t *right) {
+  sigemptyset64(dest);
+  for (size_t i = 1; i < sizeof(sigset64_t) * CHAR_BIT; i++)
+    if (sigismember64(left, (int)i) == 1 || sigismember64(right, (int)i) == 1) sigaddset64(dest, (int)i);
+}
+
+static void bytesig_sigorset(sigset_t *dest, sigset_t *left, sigset_t *right) {
+  sigemptyset(dest);
+  for (size_t i = 1; i < sizeof(sigset_t) * CHAR_BIT; i++)
+    if (sigismember(left, (int)i) == 1 || sigismember(right, (int)i) == 1) sigaddset(dest, (int)i);
+}
+
+__attribute__((noinline)) static void bytesig_handler_internal(int signum, siginfo_t *siginfo,
+                                                               void *context) {
+  bytesig_signal_t *sig = bytesig_signal_array[signum];
+
+  // check protect info & do siglongjmp
+  pid_t tid = gettid();
+  if (__predict_false(0 == tid)) tid = (pid_t)syscall(SYS_gettid);
+  for (size_t i = 0; i < BYTESIG_PROTECTED_THREADS_MAX; i++) {
+    if (__predict_false(tid == __atomic_load_n(&(sig->tids[i]), __ATOMIC_RELAXED))) {
+      BYTESIG_LOG("siglongjmp signal %d (code %d) at %zu", signum, siginfo->si_code, i);
+
+      unsigned int ret_signum = (((unsigned int)signum & 0xFFU) << 16U);
+      unsigned int ret_code = 0U;
+      if (siginfo->si_code > 0)
+        ret_code = (((unsigned int)(siginfo->si_code) & 0xFFU) << 8U);
+      else if (siginfo->si_code < 0)
+        ret_code = (unsigned int)(-(siginfo->si_code)) & 0xFFU;
+      int ret_val = (int)(ret_signum | ret_code);
+
+      siglongjmp(*(__atomic_load_n(&(sig->jbufs[i]), __ATOMIC_RELAXED)), ret_val);
+    }
+  }
+
+#define SET_THREAD_SIGNAL_MASK(suffix)                                                       \
+  do {                                                                                       \
+    sigset##suffix##_t prev_mask;                                                            \
+    bytesig_sigorset##suffix(&prev_mask, &(((ucontext_t *)context)->uc_sigmask##suffix),     \
+                             &(sig->prev_action##suffix.sa_mask));                           \
+    if (0 == ((unsigned int)(sig->prev_action##suffix.sa_flags) & (unsigned int)SA_NODEFER)) \
+      sigaddset##suffix(&prev_mask, signum);                                                 \
+    sigaddset##suffix(&prev_mask, SIGPIPE);                                                  \
+    sigaddset##suffix(&prev_mask, SIGUSR1);                                                  \
+    sigaddset##suffix(&prev_mask, SIGQUIT);                                                  \
+    ((bytesig_sigprocmask##suffix##_t)bytesig_sigprocmask)(SIG_SETMASK, &prev_mask, NULL);   \
+  } while (0)
+
+  // set thread signal mask
+  if (BYTESIG_STATUS_SIG64 == bytesig_status)
+    SET_THREAD_SIGNAL_MASK(64);
+  else
+    SET_THREAD_SIGNAL_MASK();
+}
+
+// https://llvm.org/docs/CodeGenerator.html#tail-call-optimization
+// https://clang.llvm.org/docs/AttributeReference.html#disable-tail-calls
+//__attribute__((disable_tail_calls))
+static void bytesig_handler(int signum, siginfo_t *siginfo, void *context) {
+  bytesig_handler_internal(signum, siginfo, context);
+
+#define CALL_PREVIOUS_SIGNAL_HANDLER(suffix)                            \
+  do {                                                                  \
+    if (__predict_true(sig->prev_action##suffix.sa_flags & SA_SIGINFO)) \
+      sig->prev_action##suffix.sa_sigaction(signum, siginfo, context);  \
+    else if (SIG_DFL != sig->prev_action##suffix.sa_handler &&          \
+             SIG_IGN != sig->prev_action##suffix.sa_handler)            \
+      sig->prev_action##suffix.sa_handler(signum);                      \
+  } while (0)
+
+  // call previous signal handler
+  bytesig_signal_t *sig = bytesig_signal_array[signum];
+  if (BYTESIG_STATUS_SIG64 == bytesig_status)
+    CALL_PREVIOUS_SIGNAL_HANDLER(64);
+  else
+    CALL_PREVIOUS_SIGNAL_HANDLER();
+}
+
+int bytesig_init(int signum) {
+  if (__predict_false(signum <= 0 || signum >= __SIGRTMIN || signum == SIGKILL || signum == SIGSTOP))
+    return -1;
+  if (__predict_false(BYTESIG_STATUS_UNAVAILABLE == bytesig_status)) return -1;
+  if (__predict_false(NULL != bytesig_signal_array[signum])) return -1;
+
+  static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+  pthread_mutex_lock(&lock);
+  int ret = -1;
+  if (__predict_false(NULL != bytesig_signal_array[signum])) goto end;
+
+  bytesig_signal_t *sig = calloc(1, sizeof(bytesig_signal_t));
+  if (__predict_false(NULL == sig)) goto end;
+
+#define SA_EXPOSE_TAGBITS 0x00000800
+
+#define REGISTER_SIGNAL_HANDLER(suffix)                                                                     \
+  do {                                                                                                      \
+    struct sigaction##suffix act;                                                                           \
+    memset(&act, 0, sizeof(struct sigaction##suffix));                                                      \
+    sigfillset##suffix(&act.sa_mask);                                                                       \
+    act.sa_sigaction = bytesig_handler;                                                                     \
+    act.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_RESTART | SA_EXPOSE_TAGBITS;                                \
+    if (__predict_false(                                                                                    \
+            0 !=                                                                                            \
+            ((bytesig_sigaction##suffix##_t)bytesig_sigaction)(signum, &act, &sig->prev_action##suffix))) { \
+      free(sig);                                                                                            \
+      goto end;                                                                                             \
+    }                                                                                                       \
+  } while (0)
+
+  // register the signal handler, we start off with all signals blocked
+  if (BYTESIG_STATUS_SIG64 == bytesig_status)
+    REGISTER_SIGNAL_HANDLER(64);
+  else
+    REGISTER_SIGNAL_HANDLER();
+
+  bytesig_signal_array[signum] = sig;
+  ret = 0;  // OK
+
+end:
+  pthread_mutex_unlock(&lock);
+  return ret;
+}
+
+void bytesig_protect(pid_t tid, sigjmp_buf *jbuf, const int signums[], size_t signums_cnt) {
+  for (size_t i = 0; i < signums_cnt; i++) {
+    int signum = signums[i];
+    if (__predict_false(signum <= 0 || signum >= __SIGRTMIN || signum == SIGKILL || signum == SIGSTOP))
+      continue;
+
+    bytesig_signal_t *sig = bytesig_signal_array[signum];
+    if (__predict_false(NULL == sig)) continue;
+
+    // check repeated thread
+    bool repeated = false;
+    for (size_t j = 0; j < BYTESIG_PROTECTED_THREADS_MAX; j++) {
+      if (__predict_false(tid == sig->tids[j])) {
+        repeated = true;
+        break;
+      }
+    }
+    if (__predict_false(repeated)) continue;
+
+    // save thread-ID and jump buffer
+    size_t j = 0;
+    while (1) {
+      if (0 == sig->tids[j]) {
+        pid_t expected = 0;
+        if (__atomic_compare_exchange_n(&sig->tids[j], &expected, tid, false, __ATOMIC_ACQUIRE,
+                                        __ATOMIC_RELAXED)) {
+          sig->jbufs[j] = jbuf;
+          BYTESIG_LOG("protect_start signal %d at %zu", signum, j);
+          break;  // finished
+        }
+      }
+
+      j++;
+      if (__predict_false(BYTESIG_PROTECTED_THREADS_MAX == j)) j = 0;
+    }
+  }
+}
+
+void bytesig_unprotect(pid_t tid, const int signums[], size_t signums_cnt) {
+  for (size_t i = 0; i < signums_cnt; i++) {
+    int signum = signums[i];
+    if (__predict_false(signum <= 0 || signum >= __SIGRTMIN || signum == SIGKILL || signum == SIGSTOP))
+      continue;
+
+    bytesig_signal_t *sig = bytesig_signal_array[signum];
+    if (__predict_false(NULL == sig)) continue;
+
+    // free thread-ID and jump buffer
+    for (size_t j = 0; j < BYTESIG_PROTECTED_THREADS_MAX; j++) {
+      if (tid == sig->tids[j]) {
+        sig->jbufs[j] = NULL;
+        __atomic_store_n(&sig->tids[j], 0, __ATOMIC_RELEASE);
+        BYTESIG_LOG("protect_end signal %d at %zu", signum, j);
+        break;  // finished
+      }
+    }
+  }
+}
diff --git a/app/src/main/cpp/shadowhook/common/bytesig.h b/app/src/main/cpp/shadowhook/common/bytesig.h
new file mode 100644
index 0000000..a7de526
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/bytesig.h
@@ -0,0 +1,157 @@
+// Copyright (c) 2021-2023 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+// version 1.0.4
+
+/*
+ * #include "bytesig.h"
+ *
+ * void init_once(void)
+ * {
+ *     bytesig_init(SIGSEGV);
+ *     bytesig_init(SIGBUS);
+ *     bytesig_init(SIGILL);
+ *     bytesig_init(SIGABRT);
+ *     // ......
+ * }
+ *
+ * void unstable_func(void)
+ * {
+ *     int *p = NULL;
+ *
+ *     //
+ *     // usage 1
+ *     //
+ *     BYTESIG_TRY(SIGSEGV, SIGBUS)
+ *     {
+ *         *p = 1;
+ *     }
+ *     BYTESIG_CATCH(signum, code)
+ *     {
+ *         LOG("signum %d (code %d)", signum, code);
+ *     }
+ *     BYTESIG_EXIT
+ *
+ *     //
+ *     // usage 2
+ *     //
+ *     BYTESIG_TRY(SIGSEGV, SIGBUS)
+ *     {
+ *         *p = 2;
+ *     }
+ *     BYTESIG_CATCH(signum)
+ *     {
+ *         LOG("signum %d", signum);
+ *     }
+ *     BYTESIG_EXIT
+ *
+ *     //
+ *     // usage 3
+ *     //
+ *     BYTESIG_TRY(SIGILL)
+ *     {
+ *         func_maybe_illed();
+ *     }
+ *     BYTESIG_CATCH()
+ *     {
+ *         do_something();
+ *     }
+ *     BYTESIG_EXIT
+ *
+ *     //
+ *     // usage 4
+ *     //
+ *     BYTESIG_TRY(SIGABRT)
+ *     {
+ *         func_maybe_aborted();
+ *     }
+ *     BYTESIG_EXIT
+ * }
+ */
+
+#ifndef BYTEDANCE_BYTESIG
+#define BYTEDANCE_BYTESIG
+
+#include <setjmp.h>
+#include <signal.h>
+#include <stddef.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#define BYTESIG_TRY(...)                                                                                   \
+  do {                                                                                                     \
+    pid_t _bytesig_tid_ = gettid();                                                                        \
+    if (0 == _bytesig_tid_) _bytesig_tid_ = (pid_t)syscall(SYS_gettid);                                    \
+    sigjmp_buf _bytesig_jbuf_;                                                                             \
+    int _bytesig_sigs_[] = {__VA_ARGS__};                                                                  \
+    bytesig_protect(_bytesig_tid_, &_bytesig_jbuf_, _bytesig_sigs_, sizeof(_bytesig_sigs_) / sizeof(int)); \
+    int _bytesig_protected_ = 1;                                                                           \
+    int _bytesig_ex_ = sigsetjmp(_bytesig_jbuf_, 1);                                                       \
+    if (0 == _bytesig_ex_) {
+#define BYTESIG_CATCH_2(signum_, code_)                                                     \
+  }                                                                                         \
+  else {                                                                                    \
+    bytesig_unprotect(_bytesig_tid_, _bytesig_sigs_, sizeof(_bytesig_sigs_) / sizeof(int)); \
+    _bytesig_protected_ = 0;                                                                \
+    int signum_ = (int)(((unsigned int)_bytesig_ex_ & 0xFF0000U) >> 16U);                   \
+    int code_ = 0;                                                                          \
+    if (((unsigned int)_bytesig_ex_ & 0xFF00U) > 0)                                         \
+      code_ = (int)(((unsigned int)_bytesig_ex_ & 0xFF00U) >> 8U);                          \
+    else if (((unsigned int)_bytesig_ex_ & 0xFFU) > 0)                                      \
+      code_ = -((int)((unsigned int)_bytesig_ex_ & 0xFFU));                                 \
+    (void)signum_;                                                                          \
+    (void)code_;
+
+#define BYTESIG_CATCH_1(signum_) BYTESIG_CATCH_2(signum_, _bytesig_code_)
+#define BYTESIG_CATCH_0()        BYTESIG_CATCH_1(_bytesig_signum_)
+
+#define FUNC_CHOOSER(_f1, _f2, _f3, ...)     _f3
+#define FUNC_RECOMPOSER(argsWithParentheses) FUNC_CHOOSER argsWithParentheses
+#define CHOOSE_FROM_ARG_COUNT(...)           FUNC_RECOMPOSER((__VA_ARGS__, BYTESIG_CATCH_2, BYTESIG_CATCH_1, ))
+#define NO_ARG_EXPANDER()                    , , BYTESIG_CATCH_0
+#define MACRO_CHOOSER(...)                   CHOOSE_FROM_ARG_COUNT(NO_ARG_EXPANDER __VA_ARGS__())
+
+#define BYTESIG_CATCH(...) MACRO_CHOOSER(__VA_ARGS__)(__VA_ARGS__)
+
+#define BYTESIG_EXIT                                                                        \
+  }                                                                                         \
+  if (1 == _bytesig_protected_)                                                             \
+    bytesig_unprotect(_bytesig_tid_, _bytesig_sigs_, sizeof(_bytesig_sigs_) / sizeof(int)); \
+  }                                                                                         \
+  while (0)                                                                                 \
+    ;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int bytesig_init(int signum);
+
+void bytesig_protect(pid_t tid, sigjmp_buf *jbuf, const int signums[], size_t signums_cnt);
+void bytesig_unprotect(pid_t tid, const int signums[], size_t signums_cnt);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/common/sh_config.h b/app/src/main/cpp/shadowhook/common/sh_config.h
new file mode 100644
index 0000000..464dea9
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_config.h
@@ -0,0 +1,55 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+
+// Global debugging.
+//
+// Note that in some cases these logs themselves can cause a crash.
+//
+//#define SH_CONFIG_DEBUG
+
+// Operation record of hook and unhook.
+//
+// Disabling it can reduce hook/unhook latency, memory footprint and file size.
+//
+#define SH_CONFIG_OPERATION_RECORDS
+
+// Crash signal protection.
+//
+// Do not disable it in a production environment.
+//
+#define SH_CONFIG_SIG_PROT
+
+// When hooking, try to find an exit for the relative jump for the dynamic library.
+//
+// Do not disable it in a production environment.
+//
+#define SH_CONFIG_TRY_WITH_EXIT
+
+// When hooking the function of the thumb instruction, if the function is too short,
+// try to use the gap aligned at the end of the function.
+//
+// Do not disable it in a production environment.
+//
+#define SH_CONFIG_DETECT_THUMB_TAIL_ALIGNED
diff --git a/app/src/main/cpp/shadowhook/common/sh_errno.c b/app/src/main/cpp/shadowhook/common/sh_errno.c
new file mode 100644
index 0000000..e55891e
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_errno.c
@@ -0,0 +1,107 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_errno.h"
+
+#include <pthread.h>
+#include <stdbool.h>
+
+#include "shadowhook.h"
+
+static int sh_errno_global = SHADOWHOOK_ERRNO_UNINIT;
+static pthread_key_t sh_errno_tls_key;
+
+int sh_errno_init(void) {
+  if (__predict_false(0 != pthread_key_create(&sh_errno_tls_key, NULL))) {
+    sh_errno_global = SHADOWHOOK_ERRNO_INIT_ERRNO;
+    return -1;
+  }
+  sh_errno_global = SHADOWHOOK_ERRNO_OK;
+  return 0;
+}
+
+void sh_errno_reset(void) {
+  sh_errno_set(0);
+}
+
+void sh_errno_set(int error_number) {
+  if (sh_errno_global == SHADOWHOOK_ERRNO_UNINIT || sh_errno_global == SHADOWHOOK_ERRNO_INIT_ERRNO) return;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wint-to-void-pointer-cast"
+  pthread_setspecific(sh_errno_tls_key, (void *)error_number);
+#pragma clang diagnostic pop
+}
+
+int sh_errno_get(void) {
+  if (sh_errno_global == SHADOWHOOK_ERRNO_UNINIT || sh_errno_global == SHADOWHOOK_ERRNO_INIT_ERRNO)
+    return sh_errno_global;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wvoid-pointer-to-int-cast"
+  return (int)(pthread_getspecific(sh_errno_tls_key));
+#pragma clang diagnostic pop
+}
+
+const char *sh_errno_to_errmsg(int error_number) {
+  static const char *msg[] = {/* 0  */ "OK",
+                              /* 1  */ "Pending task",
+                              /* 2  */ "Not initialized",
+                              /* 3  */ "Invalid argument",
+                              /* 4  */ "Out of memory",
+                              /* 5  */ "MProtect failed",
+                              /* 6  */ "Write to arbitrary address crashed",
+                              /* 7  */ "Init errno mod failed",
+                              /* 8  */ "Init bytesig SIGSEGV mod failed",
+                              /* 9  */ "Init bytesig SIGBUS mod failed",
+                              /* 10 */ "Init enter mod failed",
+                              /* 11 */ "Init safe mod failed",
+                              /* 12 */ "Init linker mod failed",
+                              /* 13 */ "Init hub mod failed",
+                              /* 14 */ "Create hub failed",
+                              /* 15 */ "Monitor dlopen failed",
+                              /* 16 */ "Create monitor thread failed",
+                              /* 17 */ "Open ELF crashed",
+                              /* 18 */ "Find symbol in ELF failed",
+                              /* 19 */ "Find symbol in ELF crashed",
+                              /* 20 */ "Duplicate hook",
+                              /* 21 */ "Dladdr crashed",
+                              /* 22 */ "Find dlinfo failed",
+                              /* 23 */ "Symbol size too small",
+                              /* 24 */ "Alloc enter failed",
+                              /* 25 */ "Instruction rewrite crashed",
+                              /* 26 */ "Instruction rewrite failed",
+                              /* 27 */ "Switch not found",
+                              /* 28 */ "Verify original instruction crashed",
+                              /* 29 */ "Verify original instruction failed",
+                              /* 30 */ "Exit instruction mismatch",
+                              /* 31 */ "Free exit crashed",
+                              /* 32 */ "Unhook on an error status task",
+                              /* 33 */ "Unhook on an unfinished task",
+                              /* 34 */ "ELF with an unsupported architecture",
+                              /* 35 */ "Linker with an unsupported architecture"};
+
+  if (error_number < 0 || error_number >= (int)(sizeof(msg) / sizeof(msg[0]))) return "Unknown error number";
+
+  return msg[error_number];
+}
diff --git a/app/src/main/cpp/shadowhook/common/sh_errno.h b/app/src/main/cpp/shadowhook/common/sh_errno.h
new file mode 100644
index 0000000..10f017b
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_errno.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include "sh_log.h"
+
+#define SH_ERRNO_SET_RET_ERRNUM(errnum) SH_ERRNO_SET_RET((errnum), (errnum))
+#define SH_ERRNO_SET_RET_FAIL(errnum)   SH_ERRNO_SET_RET((errnum), -1)
+#define SH_ERRNO_SET_RET_NULL(errnum)   SH_ERRNO_SET_RET((errnum), NULL)
+#define SH_ERRNO_SET_RET(errnum, ret) \
+  do {                                \
+    sh_errno_set((errnum));           \
+    return (ret);                     \
+  } while (0)
+
+int sh_errno_init(void);
+void sh_errno_reset(void);
+void sh_errno_set(int error_number);
+int sh_errno_get(void);
+const char *sh_errno_to_errmsg(int error_number);
diff --git a/app/src/main/cpp/shadowhook/common/sh_log.c b/app/src/main/cpp/shadowhook/common/sh_log.c
new file mode 100644
index 0000000..2632723
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_log.c
@@ -0,0 +1,53 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_log.h"
+
+#include <android/log.h>
+#include <stdbool.h>
+
+#include "sh_config.h"
+
+android_LogPriority sh_log_priority =
+#ifdef SH_CONFIG_DEBUG
+    ANDROID_LOG_INFO
+#else
+    ANDROID_LOG_SILENT
+#endif
+    ;
+
+bool sh_log_get_debuggable(void) {
+  return sh_log_priority <= ANDROID_LOG_INFO;
+}
+
+void sh_log_set_debuggable(bool debuggable) {
+#ifdef SH_CONFIG_DEBUG
+  (void)debuggable;
+  sh_log_priority = ANDROID_LOG_INFO;
+#else
+  if (__predict_false(debuggable))
+    sh_log_priority = ANDROID_LOG_INFO;
+  else
+    sh_log_priority = ANDROID_LOG_SILENT;
+#endif
+}
diff --git a/app/src/main/cpp/shadowhook/common/sh_log.h b/app/src/main/cpp/shadowhook/common/sh_log.h
new file mode 100644
index 0000000..fff786f
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_log.h
@@ -0,0 +1,70 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <android/log.h>
+#include <inttypes.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+extern android_LogPriority sh_log_priority;
+
+#define SH_LOG_TAG "shadowhook_tag"
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
+
+// Notice:
+// We don't use ANDROID_LOG_DEBUG, because some Android devices will filter out ANDROID_LOG_DEBUG.
+#ifdef SH_CONFIG_DEBUG
+#define SH_LOG_DEBUG(fmt, ...)                                               \
+  do {                                                                       \
+    if (sh_log_priority <= ANDROID_LOG_INFO)                                 \
+      __android_log_print(ANDROID_LOG_INFO, SH_LOG_TAG, fmt, ##__VA_ARGS__); \
+  } while (0)
+#else
+#define SH_LOG_DEBUG(fmt, ...)
+#endif
+
+#define SH_LOG_INFO(fmt, ...)                                                \
+  do {                                                                       \
+    if (__predict_false(sh_log_priority <= ANDROID_LOG_INFO))                \
+      __android_log_print(ANDROID_LOG_INFO, SH_LOG_TAG, fmt, ##__VA_ARGS__); \
+  } while (0)
+#define SH_LOG_WARN(fmt, ...)                                                \
+  do {                                                                       \
+    if (__predict_false(sh_log_priority <= ANDROID_LOG_WARN))                \
+      __android_log_print(ANDROID_LOG_WARN, SH_LOG_TAG, fmt, ##__VA_ARGS__); \
+  } while (0)
+#define SH_LOG_ERROR(fmt, ...)                                                \
+  do {                                                                        \
+    if (__predict_false(sh_log_priority <= ANDROID_LOG_ERROR))                \
+      __android_log_print(ANDROID_LOG_ERROR, SH_LOG_TAG, fmt, ##__VA_ARGS__); \
+  } while (0)
+#define SH_LOG_ALWAYS_SHOW(fmt, ...) __android_log_print(ANDROID_LOG_WARN, SH_LOG_TAG, fmt, ##__VA_ARGS__)
+
+#pragma clang diagnostic pop
+
+bool sh_log_get_debuggable(void);
+void sh_log_set_debuggable(bool debuggable);
diff --git a/app/src/main/cpp/shadowhook/common/sh_sig.h b/app/src/main/cpp/shadowhook/common/sh_sig.h
new file mode 100644
index 0000000..5b926ae
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_sig.h
@@ -0,0 +1,49 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+
+#include "sh_config.h"
+
+#ifdef SH_CONFIG_SIG_PROT
+
+#include "bytesig.h"
+#define SH_SIG_TRY   BYTESIG_TRY
+#define SH_SIG_CATCH BYTESIG_CATCH
+#define SH_SIG_EXIT  BYTESIG_EXIT
+
+#else
+
+#define SH_SIG_TRY(...) \
+  do {                  \
+    if (0 == 0) {
+#define SH_SIG_CATCH(...) \
+  }                       \
+  else {
+#define SH_SIG_EXIT \
+  }                 \
+  }                 \
+  while (0)         \
+    ;
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/common/sh_trampo.c b/app/src/main/cpp/shadowhook/common/sh_trampo.c
new file mode 100644
index 0000000..894273c
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_trampo.c
@@ -0,0 +1,172 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_trampo.h"
+
+#include <pthread.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/prctl.h>
+#include <sys/time.h>
+
+#include "queue.h"
+#include "sh_util.h"
+
+#define SH_TRAMPO_PAGE_SZ 4096
+#define SH_TRAMPO_ALIGN   4
+
+void sh_trampo_init_mgr(sh_trampo_mgr_t *mem_mgr, const char *page_name, size_t trampo_size,
+                        time_t delay_sec) {
+  SLIST_INIT(&mem_mgr->pages);
+  pthread_mutex_init(&mem_mgr->pages_lock, NULL);
+  mem_mgr->page_name = page_name;
+  mem_mgr->trampo_size = SH_UTIL_ALIGN_END(trampo_size, SH_TRAMPO_ALIGN);
+  mem_mgr->delay_sec = delay_sec;
+}
+
+uintptr_t sh_trampo_alloc(sh_trampo_mgr_t *mem_mgr, uintptr_t hint, uintptr_t range_low,
+                          uintptr_t range_high) {
+  uintptr_t mem = 0;
+  uintptr_t new_ptr;
+  uintptr_t new_ptr_prctl = (uintptr_t)MAP_FAILED;
+  size_t count = SH_TRAMPO_PAGE_SZ / mem_mgr->trampo_size;
+
+  if (range_low > hint) range_low = hint;
+  if (range_high > UINTPTR_MAX - hint) range_high = UINTPTR_MAX - hint;
+
+  struct timeval now;
+  if (mem_mgr->delay_sec > 0) gettimeofday(&now, NULL);
+
+  pthread_mutex_lock(&mem_mgr->pages_lock);
+
+  // try to find an unused mem
+  sh_trampo_page_t *page;
+  SLIST_FOREACH(page, &mem_mgr->pages, link) {
+    // check hit range
+    uintptr_t page_trampo_start = page->ptr;
+    uintptr_t page_trampo_end = page->ptr + SH_TRAMPO_PAGE_SZ - mem_mgr->trampo_size;
+    if (hint > 0 && ((page_trampo_end < hint - range_low) || (hint + range_high < page_trampo_start)))
+      continue;
+
+    for (uintptr_t i = 0; i < count; i++) {
+      size_t flags_idx = i / 32;
+      uint32_t mask = (uint32_t)1 << (i % 32);
+      if (0 == (page->flags[flags_idx] & mask))  // check flag
+      {
+        // check timestamp
+        if (mem_mgr->delay_sec > 0 &&
+            (now.tv_sec <= page->timestamps[i] || now.tv_sec - page->timestamps[i] <= mem_mgr->delay_sec))
+          continue;
+
+        // check hit range
+        uintptr_t cur = page->ptr + (mem_mgr->trampo_size * i);
+        if (hint > 0 && ((cur < hint - range_low) || (hint + range_high < cur))) continue;
+
+        // OK
+        page->flags[flags_idx] |= mask;
+        mem = cur;
+        memset((void *)mem, 0, mem_mgr->trampo_size);
+        goto end;
+      }
+    }
+  }
+
+  // alloc a new mem page
+  new_ptr = (uintptr_t)(mmap(hint > 0 ? (void *)(hint - range_low) : NULL, SH_TRAMPO_PAGE_SZ,
+                             PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
+  if ((uintptr_t)MAP_FAILED == new_ptr) goto err;
+  new_ptr_prctl = new_ptr;
+
+  // check hit range
+  if (hint > 0 && ((hint - range_low >= new_ptr + SH_TRAMPO_PAGE_SZ - mem_mgr->trampo_size) ||
+                   (hint + range_high < new_ptr)))
+    goto err;
+
+  // create a new trampo-page info
+  if (NULL == (page = calloc(1, sizeof(sh_trampo_page_t)))) goto err;
+  memset((void *)new_ptr, 0, SH_TRAMPO_PAGE_SZ);
+  page->ptr = new_ptr;
+  new_ptr = (uintptr_t)MAP_FAILED;
+  if (NULL == (page->flags = calloc(1, SH_UTIL_ALIGN_END(count, 32) / 8))) goto err;
+  page->timestamps = NULL;
+  if (mem_mgr->delay_sec > 0) {
+    if (NULL == (page->timestamps = calloc(1, count * sizeof(time_t)))) goto err;
+  }
+  SLIST_INSERT_HEAD(&mem_mgr->pages, page, link);
+
+  // alloc mem from the new mem page
+  for (uintptr_t i = 0; i < count; i++) {
+    size_t flags_idx = i / 32;
+    uint32_t mask = (uint32_t)1 << (i % 32);
+
+    // check hit range
+    uintptr_t find = page->ptr + (mem_mgr->trampo_size * i);
+    if (hint > 0 && ((find < hint - range_low) || (hint + range_high < find))) continue;
+
+    // OK
+    page->flags[flags_idx] |= mask;
+    mem = find;
+    break;
+  }
+  if (0 == mem) abort();
+
+end:
+  pthread_mutex_unlock(&mem_mgr->pages_lock);
+  if ((uintptr_t)MAP_FAILED != new_ptr_prctl)
+    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, new_ptr_prctl, SH_TRAMPO_PAGE_SZ, mem_mgr->page_name);
+  return mem;
+
+err:
+  pthread_mutex_unlock(&mem_mgr->pages_lock);
+  if (NULL != page) {
+    if (0 != page->ptr) munmap((void *)page->ptr, SH_TRAMPO_PAGE_SZ);
+    if (NULL != page->flags) free(page->flags);
+    if (NULL != page->timestamps) free(page->timestamps);
+    free(page);
+  }
+  if ((uintptr_t)MAP_FAILED != new_ptr) munmap((void *)new_ptr, SH_TRAMPO_PAGE_SZ);
+  return 0;
+}
+
+void sh_trampo_free(sh_trampo_mgr_t *mem_mgr, uintptr_t mem) {
+  struct timeval now;
+  if (mem_mgr->delay_sec > 0) gettimeofday(&now, NULL);
+
+  pthread_mutex_lock(&mem_mgr->pages_lock);
+
+  sh_trampo_page_t *page;
+  SLIST_FOREACH(page, &mem_mgr->pages, link) {
+    if (page->ptr <= mem && mem < page->ptr + SH_TRAMPO_PAGE_SZ) {
+      uintptr_t i = (mem - page->ptr) / mem_mgr->trampo_size;
+      size_t flags_idx = i / 32;
+      uint32_t mask = (uint32_t)1 << (i % 32);
+      if (mem_mgr->delay_sec > 0) page->timestamps[i] = now.tv_sec;
+      page->flags[flags_idx] &= ~mask;
+      break;
+    }
+  }
+
+  pthread_mutex_unlock(&mem_mgr->pages_lock);
+}
diff --git a/app/src/main/cpp/shadowhook/common/sh_trampo.h b/app/src/main/cpp/shadowhook/common/sh_trampo.h
new file mode 100644
index 0000000..0a20964
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_trampo.h
@@ -0,0 +1,52 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/time.h>
+
+#include "queue.h"
+
+typedef struct sh_trampo_page {
+  uintptr_t ptr;
+  uint32_t *flags;
+  time_t *timestamps;
+  SLIST_ENTRY(sh_trampo_page, ) link;
+} sh_trampo_page_t;
+typedef SLIST_HEAD(sh_trampo_page_list, sh_trampo_page, ) sh_trampo_page_list_t;
+
+typedef struct sh_trampo_mgr {
+  sh_trampo_page_list_t pages;
+  pthread_mutex_t pages_lock;
+  const char *page_name;
+  size_t trampo_size;
+  time_t delay_sec;
+} sh_trampo_mgr_t;
+
+void sh_trampo_init_mgr(sh_trampo_mgr_t *mem_mgr, const char *page_name, size_t trampo_size,
+                        time_t delay_sec);
+
+uintptr_t sh_trampo_alloc(sh_trampo_mgr_t *mem_mgr, uintptr_t hint, uintptr_t low_offset,
+                          uintptr_t high_offset);
+void sh_trampo_free(sh_trampo_mgr_t *mem_mgr, uintptr_t mem);
diff --git a/app/src/main/cpp/shadowhook/common/sh_util.c b/app/src/main/cpp/shadowhook/common/sh_util.c
new file mode 100644
index 0000000..b8604c8
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_util.c
@@ -0,0 +1,538 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_util.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "sh_log.h"
+#include "sh_sig.h"
+#include "shadowhook.h"
+
+int sh_util_mprotect(uintptr_t addr, size_t len, int prot) {
+  uintptr_t start = SH_UTIL_PAGE_START(addr);
+  uintptr_t end = SH_UTIL_PAGE_END(addr + len - 1);
+
+  return mprotect((void *)start, end - start, prot);
+}
+
+void sh_util_clear_cache(uintptr_t addr, size_t len) {
+  __builtin___clear_cache((char *)addr, (char *)(addr + len));
+}
+
+bool sh_util_is_thumb32(uintptr_t target_addr) {
+  uint16_t opcode = *((uint16_t *)target_addr);
+  int tmp = opcode >> 11u;
+  return (tmp == 0x1d) || (tmp == 0x1e) || (tmp == 0x1f);
+}
+
+static uint32_t sh_util_ror(uint32_t val, uint32_t n, uint32_t shift) {
+  uint32_t m = shift % n;
+  return (val >> m) | (val << (n - m));
+}
+
+uint32_t sh_util_arm_expand_imm(uint32_t opcode) {
+  uint32_t imm = SH_UTIL_GET_BITS_32(opcode, 7, 0);
+  uint32_t amt = 2 * SH_UTIL_GET_BITS_32(opcode, 11, 8);
+
+  return amt == 0 ? imm : sh_util_ror(imm, 32, amt);
+}
+
+int sh_util_write_inst(uintptr_t target_addr, void *inst, size_t inst_len) {
+  if (0 != sh_util_mprotect(target_addr, inst_len, PROT_READ | PROT_WRITE | PROT_EXEC))
+    return SHADOWHOOK_ERRNO_MPROT;
+
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    if ((4 == inst_len) && (0 == target_addr % 4))
+      __atomic_store_n((uint32_t *)target_addr, *((uint32_t *)inst), __ATOMIC_SEQ_CST);
+    else if ((8 == inst_len) && (0 == target_addr % 8))
+      __atomic_store_n((uint64_t *)target_addr, *((uint64_t *)inst), __ATOMIC_SEQ_CST);
+#ifdef __LP64__
+    else if ((16 == inst_len) && (0 == target_addr % 16))
+      __atomic_store_n((__int128 *)target_addr, *((__int128 *)inst), __ATOMIC_SEQ_CST);
+#endif
+    else
+      memcpy((void *)target_addr, inst, inst_len);
+
+    sh_util_clear_cache(target_addr, inst_len);
+  }
+  SH_SIG_CATCH() {
+    return SHADOWHOOK_ERRNO_WRITE_CRASH;
+  }
+  SH_SIG_EXIT
+
+  return 0;  // OK
+}
+
+static bool sh_util_starts_with(const char *str, const char *start) {
+  while (*str && *str == *start) {
+    str++;
+    start++;
+  }
+
+  return '\0' == *start;
+}
+
+static int sh_util_get_api_level_from_build_prop(void) {
+  char buf[128];
+  int api_level = -1;
+
+  FILE *fp = fopen("/system/build.prop", "r");
+  if (__predict_false(NULL == fp)) goto end;
+
+  while (fgets(buf, sizeof(buf), fp)) {
+    if (__predict_false(sh_util_starts_with(buf, "ro.build.version.sdk="))) {
+      api_level = atoi(buf + 21);
+      break;
+    }
+  }
+  fclose(fp);
+
+end:
+  return (api_level > 0) ? api_level : -1;
+}
+
+int sh_util_get_api_level(void) {
+  static int xdl_util_api_level = -1;
+
+  if (__predict_false(xdl_util_api_level < 0)) {
+    int api_level = android_get_device_api_level();
+    if (__predict_false(api_level < 0))
+      api_level = sh_util_get_api_level_from_build_prop();  // compatible with unusual models
+    if (__predict_false(api_level < __ANDROID_API_J__)) api_level = __ANDROID_API_J__;
+
+    __atomic_store_n(&xdl_util_api_level, api_level, __ATOMIC_SEQ_CST);
+  }
+
+  return xdl_util_api_level;
+}
+
+int sh_util_write(int fd, const char *buf, size_t buf_len) {
+  if (fd < 0) return -1;
+
+  const char *ptr = buf;
+  size_t nleft = buf_len;
+
+  while (nleft > 0) {
+    errno = 0;
+    ssize_t nwritten = write(fd, ptr, nleft);
+    if (nwritten <= 0) {
+      if (nwritten < 0 && errno == EINTR)
+        nwritten = 0;  // call write() again
+      else
+        return -1;  // error
+    }
+    nleft -= (size_t)nwritten;
+    ptr += nwritten;
+  }
+
+  return 0;
+}
+
+/* Nonzero if YEAR is a leap year (every 4 years,
+   except every 100th isn't, and every 400th is).  */
+#define SH_UTIL_ISLEAP(year) ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+
+#define SH_UTIL_SECS_PER_HOUR        (60 * 60)
+#define SH_UTIL_SECS_PER_DAY         (SH_UTIL_SECS_PER_HOUR * 24)
+#define SH_UTIL_DIV(a, b)            ((a) / (b) - ((a) % (b) < 0))
+#define SH_UTIL_LEAPS_THRU_END_OF(y) (SH_UTIL_DIV(y, 4) - SH_UTIL_DIV(y, 100) + SH_UTIL_DIV(y, 400))
+
+static const unsigned short int sh_util_mon_yday[2][13] = {
+    /* Normal years.  */
+    {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365},
+    /* Leap years.  */
+    {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366}};
+
+/* Compute the `struct tm' representation of *T,
+   offset GMTOFF seconds east of UTC,
+   and store year, yday, mon, mday, wday, hour, min, sec into *RESULT.
+   Return RESULT if successful.  */
+struct tm *sh_util_localtime_r(const time_t *timep, long gmtoff, struct tm *result) {
+  time_t days, rem, y;
+  const unsigned short int *ip;
+
+  if (NULL == result) return NULL;
+
+  result->tm_gmtoff = gmtoff;
+
+  days = ((*timep) / SH_UTIL_SECS_PER_DAY);
+  rem = ((*timep) % SH_UTIL_SECS_PER_DAY);
+  rem += gmtoff;
+  while (rem < 0) {
+    rem += SH_UTIL_SECS_PER_DAY;
+    --days;
+  }
+  while (rem >= SH_UTIL_SECS_PER_DAY) {
+    rem -= SH_UTIL_SECS_PER_DAY;
+    ++days;
+  }
+  result->tm_hour = (int)(rem / SH_UTIL_SECS_PER_HOUR);
+  rem %= SH_UTIL_SECS_PER_HOUR;
+  result->tm_min = (int)(rem / 60L);
+  result->tm_sec = (int)(rem % 60L);
+  /* January 1, 1970 was a Thursday.  */
+  result->tm_wday = (int)(4 + days) % 7;
+  if (result->tm_wday < 0) result->tm_wday += 7;
+  y = 1970;
+
+  while (days < 0 || days >= (SH_UTIL_ISLEAP(y) ? 366 : 365)) {
+    /* Guess a corrected year, assuming 365 days per year.  */
+    time_t yg = y + days / 365 - (days % 365 < 0);
+
+    /* Adjust DAYS and Y to match the guessed year.  */
+    days -= ((yg - y) * 365 + SH_UTIL_LEAPS_THRU_END_OF(yg - 1) - SH_UTIL_LEAPS_THRU_END_OF(y - 1));
+
+    y = yg;
+  }
+  result->tm_year = (int)(y - 1900);
+  if (result->tm_year != y - 1900) {
+    /* The year cannot be represented due to overflow.  */
+    errno = EOVERFLOW;
+    return NULL;
+  }
+  result->tm_yday = (int)days;
+  ip = sh_util_mon_yday[SH_UTIL_ISLEAP(y)];
+  for (y = 11; days < (long int)ip[y]; --y) continue;
+  days -= ip[y];
+  result->tm_mon = (int)y;
+  result->tm_mday = (int)(days + 1);
+  return result;
+}
+
+static unsigned sh_util_parse_decimal(const char *format, int *ppos) {
+  const char *p = format + *ppos;
+  unsigned result = 0;
+  for (;;) {
+    int ch = *p;
+    unsigned d = (unsigned)(ch - '0');
+    if (d >= 10U) {
+      break;
+    }
+    result = result * 10 + d;
+    p++;
+  }
+  *ppos = (int)(p - format);
+  return result;
+}
+
+static void sh_util_format_unsigned(char *buf, size_t buf_size, uint64_t value, int base, int caps) {
+  char *p = buf;
+  char *end = buf + buf_size - 1;
+
+  // Generate digit string in reverse order.
+  while (value) {
+    unsigned d = (unsigned)(value % (uint64_t)base);
+    value /= (uint64_t)base;
+    if (p != end) {
+      char ch;
+      if (d < 10) {
+        ch = '0' + (char)d;
+      } else {
+        ch = (caps ? 'A' : 'a') + (char)(d - 10);
+      }
+      *p++ = ch;
+    }
+  }
+
+  // Special case for 0.
+  if (p == buf) {
+    if (p != end) {
+      *p++ = '0';
+    }
+  }
+  *p = '\0';
+
+  // Reverse digit string in-place.
+  size_t length = (size_t)(p - buf);
+  for (size_t i = 0, j = length - 1; i < j; ++i, --j) {
+    char ch = buf[i];
+    buf[i] = buf[j];
+    buf[j] = ch;
+  }
+}
+
+static void sh_util_format_integer(char *buf, size_t buf_size, uint64_t value, char conversion) {
+  // Decode the conversion specifier.
+  int is_signed = (conversion == 'd' || conversion == 'i' || conversion == 'o');
+  int base = 10;
+  if (conversion == 'x' || conversion == 'X') {
+    base = 16;
+  } else if (conversion == 'o') {
+    base = 8;
+  }
+  int caps = (conversion == 'X');
+  if (is_signed && (int64_t)(value) < 0) {
+    buf[0] = '-';
+    buf += 1;
+    buf_size -= 1;
+    value = (uint64_t)(-(int64_t)(value));
+  }
+  sh_util_format_unsigned(buf, buf_size, value, base, caps);
+}
+
+// format stream
+typedef struct {
+  size_t total;
+  char *pos;
+  size_t avail;
+} sh_util_stream_t;
+
+static void sh_util_stream_init(sh_util_stream_t *self, char *buffer, size_t buffer_size) {
+  self->total = 0;
+  self->pos = buffer;
+  self->avail = buffer_size;
+
+  if (self->avail > 0) self->pos[0] = '\0';
+}
+
+static size_t sh_util_stream_total(sh_util_stream_t *self) {
+  return self->total;
+}
+
+static void sh_util_stream_send(sh_util_stream_t *self, const char *data, int len) {
+  if (len < 0) {
+    len = (int)strlen(data);
+  }
+  self->total += (size_t)len;
+
+  if (self->avail <= 1) {
+    // no space to put anything else
+    return;
+  }
+
+  if ((size_t)len >= self->avail) {
+    len = (int)(self->avail - 1);
+  }
+
+  memcpy(self->pos, data, (size_t)len);
+  self->pos += len;
+  self->pos[0] = '\0';
+  self->avail -= (size_t)len;
+}
+
+static void sh_util_stream_send_repeat(sh_util_stream_t *self, char ch, int count) {
+  char pad[8];
+  memset(pad, ch, sizeof(pad));
+
+  const int pad_size = (int)(sizeof(pad));
+  while (count > 0) {
+    int avail = count;
+    if (avail > pad_size) {
+      avail = pad_size;
+    }
+    sh_util_stream_send(self, pad, avail);
+    count -= avail;
+  }
+}
+
+static void sh_util_stream_vformat(sh_util_stream_t *self, const char *format, va_list args) {
+  int nn = 0;
+
+  for (;;) {
+    int mm;
+    int padZero = 0;
+    int padLeft = 0;
+    char sign = '\0';
+    int width = -1;
+    int prec = -1;
+    size_t bytelen = sizeof(int);
+    int slen;
+    char buffer[32];  // temporary buffer used to format numbers
+    char c;
+
+    // first, find all characters that are not 0 or '%', then send them to the output directly
+    mm = nn;
+    do {
+      c = format[mm];
+      if (c == '\0' || c == '%') break;
+      mm++;
+    } while (1);
+    if (mm > nn) {
+      sh_util_stream_send(self, format + nn, mm - nn);
+      nn = mm;
+    }
+
+    // is this it ? then exit
+    if (c == '\0') break;
+
+    // nope, we are at a '%' modifier
+    nn++;  // skip it
+
+    // parse flags
+    for (;;) {
+      c = format[nn++];
+      if (c == '\0') {
+        // single trailing '%' ?
+        c = '%';
+        sh_util_stream_send(self, &c, 1);
+        return;
+      } else if (c == '0') {
+        padZero = 1;
+        continue;
+      } else if (c == '-') {
+        padLeft = 1;
+        continue;
+      } else if (c == ' ' || c == '+') {
+        sign = c;
+        continue;
+      }
+      break;
+    }
+
+    // parse field width
+    if ((c >= '0' && c <= '9')) {
+      nn--;
+      width = (int)(sh_util_parse_decimal(format, &nn));
+      c = format[nn++];
+    }
+
+    // parse precision
+    if (c == '.') {
+      prec = (int)(sh_util_parse_decimal(format, &nn));
+      c = format[nn++];
+    }
+
+    // length modifier
+    switch (c) {
+      case 'h':
+        bytelen = sizeof(short);
+        if (format[nn] == 'h') {
+          bytelen = sizeof(char);
+          nn += 1;
+        }
+        c = format[nn++];
+        break;
+      case 'l':
+        bytelen = sizeof(long);
+        if (format[nn] == 'l') {
+          bytelen = sizeof(long long);
+          nn += 1;
+        }
+        c = format[nn++];
+        break;
+      case 'z':
+        bytelen = sizeof(size_t);
+        c = format[nn++];
+        break;
+      case 't':
+        bytelen = sizeof(ptrdiff_t);
+        c = format[nn++];
+        break;
+      default:;
+    }
+
+    // conversion specifier
+    const char *str = buffer;
+    if (c == 's') {
+      // string
+      str = va_arg(args, const char *);
+      if (str == NULL) {
+        str = "(null)";
+      }
+    } else if (c == 'c') {
+      // character
+      // NOTE: char is promoted to int when passed through the stack
+      buffer[0] = (char)(va_arg(args, int));
+      buffer[1] = '\0';
+    } else if (c == 'p') {
+      uint64_t value = (uintptr_t)(va_arg(args, void *));
+      buffer[0] = '0';
+      buffer[1] = 'x';
+      sh_util_format_integer(buffer + 2, sizeof(buffer) - 2, value, 'x');
+    } else if (c == 'd' || c == 'i' || c == 'o' || c == 'u' || c == 'x' || c == 'X') {
+      // integers - first read value from stack
+      uint64_t value;
+      int is_signed = (c == 'd' || c == 'i' || c == 'o');
+      // NOTE: int8_t and int16_t are promoted to int when passed through the stack
+      switch (bytelen) {
+        case 1:
+          value = (uint8_t)(va_arg(args, int));
+          break;
+        case 2:
+          value = (uint16_t)(va_arg(args, int));
+          break;
+        case 4:
+          value = va_arg(args, uint32_t);
+          break;
+        case 8:
+          value = va_arg(args, uint64_t);
+          break;
+        default:
+          return;  // should not happen
+      }
+      // sign extension, if needed
+      if (is_signed) {
+        int shift = (int)(64 - 8 * bytelen);
+        value = (uint64_t)(((int64_t)(value << shift)) >> shift);
+      }
+      // format the number properly into our buffer
+      sh_util_format_integer(buffer, sizeof(buffer), value, c);
+    } else if (c == '%') {
+      buffer[0] = '%';
+      buffer[1] = '\0';
+    } else {
+      //__assert(__FILE__, __LINE__, "conversion specifier unsupported");
+      return;
+    }
+
+    // if we are here, 'str' points to the content that must be outputted.
+    // handle padding and alignment now
+    slen = (int)strlen(str);
+    if (sign != '\0' || prec != -1) {
+      //__assert(__FILE__, __LINE__, "sign/precision unsupported");
+      return;
+    }
+    if (slen < width && !padLeft) {
+      char padChar = padZero ? '0' : ' ';
+      sh_util_stream_send_repeat(self, padChar, width - slen);
+    }
+    sh_util_stream_send(self, str, slen);
+    if (slen < width && padLeft) {
+      char padChar = padZero ? '0' : ' ';
+      sh_util_stream_send_repeat(self, padChar, width - slen);
+    }
+  }
+}
+
+size_t sh_util_vsnprintf(char *buffer, size_t buffer_size, const char *format, va_list args) {
+  sh_util_stream_t stream;
+  sh_util_stream_init(&stream, buffer, buffer_size);
+  sh_util_stream_vformat(&stream, format, args);
+  return sh_util_stream_total(&stream);
+}
+
+size_t sh_util_snprintf(char *buffer, size_t buffer_size, const char *format, ...) {
+  va_list args;
+  va_start(args, format);
+  size_t buffer_len = sh_util_vsnprintf(buffer, buffer_size, format, args);
+  va_end(args);
+  return buffer_len;
+}
diff --git a/app/src/main/cpp/shadowhook/common/sh_util.h b/app/src/main/cpp/shadowhook/common/sh_util.h
new file mode 100644
index 0000000..3629971
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/common/sh_util.h
@@ -0,0 +1,103 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <android/api-level.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <time.h>
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreserved-id-macro"
+#ifndef __ANDROID_API_U__
+#define __ANDROID_API_U__ 34
+#endif
+#pragma clang diagnostic pop
+
+#define SH_UTIL_ALIGN_START(x, align) ((uintptr_t)(x) & ~((uintptr_t)(align)-1))
+#define SH_UTIL_ALIGN_END(x, align)   (((uintptr_t)(x) + (uintptr_t)(align)-1) & ~((uintptr_t)(align)-1))
+
+#define SH_UTIL_PAGE_START(x) SH_UTIL_ALIGN_START(x, 0x1000)
+#define SH_UTIL_PAGE_END(x)   SH_UTIL_ALIGN_END(x, 0x1000)
+
+#define SH_UTIL_IS_THUMB(addr)   ((addr)&1u)
+#define SH_UTIL_CLEAR_BIT0(addr) ((addr)&0xFFFFFFFE)
+#define SH_UTIL_SET_BIT0(addr)   ((addr) | 1u)
+
+#define SH_UTIL_ALIGN_4(pc) ((pc)&0xFFFFFFFC)
+#define SH_UTIL_SIGN_EXTEND_32(n, len) \
+  ((SH_UTIL_GET_BIT_32(n, len - 1) > 0) ? ((n) | (0xFFFFFFFF << (len))) : n)
+#define SH_UTIL_SIGN_EXTEND_64(n, len) \
+  ((SH_UTIL_GET_BIT_64(n, len - 1) > 0) ? ((n) | (0xFFFFFFFFFFFFFFFF << (len))) : n)
+
+#define SH_UTIL_GET_BIT_16(n, idx)        ((uint16_t)((n) << (15u - (idx))) >> 15u)
+#define SH_UTIL_GET_BITS_16(n, high, low) ((uint16_t)((n) << (15u - (high))) >> (15u - (high) + (low)))
+#define SH_UTIL_GET_BIT_32(n, idx)        ((uint32_t)((n) << (31u - (idx))) >> 31u)
+#define SH_UTIL_GET_BITS_32(n, high, low) ((uint32_t)((n) << (31u - (high))) >> (31u - (high) + (low)))
+#define SH_UTIL_GET_BIT_64(n, idx)        ((uint64_t)((n) << (63u - (idx))) >> 63u)
+#define SH_UTIL_GET_BITS_64(n, high, low) ((uint64_t)((n) << (63u - (high))) >> (63u - (high) + (low)))
+
+#define SH_UTIL_TEMP_FAILURE_RETRY(exp)    \
+  ({                                       \
+    __typeof__(exp) _rc;                   \
+    do {                                   \
+      errno = 0;                           \
+      _rc = (exp);                         \
+    } while (_rc == -1 && errno == EINTR); \
+    _rc;                                   \
+  })
+
+#define SH_UTIL_MAX(a, b)   \
+  ({                        \
+    __typeof__(a) _a = (a); \
+    __typeof__(b) _b = (b); \
+    _a > _b ? _a : _b;      \
+  })
+
+#define SH_UTIL_MIN(a, b)   \
+  ({                        \
+    __typeof__(a) _a = (a); \
+    __typeof__(b) _b = (b); \
+    _a < _b ? _a : _b;      \
+  })
+
+int sh_util_mprotect(uintptr_t addr, size_t len, int prot);
+void sh_util_clear_cache(uintptr_t addr, size_t len);
+
+bool sh_util_is_thumb32(uintptr_t target_addr);
+
+uint32_t sh_util_arm_expand_imm(uint32_t opcode);
+
+int sh_util_write_inst(uintptr_t target_addr, void *inst, size_t inst_len);
+
+int sh_util_get_api_level(void);
+
+int sh_util_write(int fd, const char *buf, size_t buf_len);
+
+struct tm *sh_util_localtime_r(const time_t *timep, long gmtoff, struct tm *result);
+
+size_t sh_util_vsnprintf(char *buffer, size_t buffer_size, const char *format, va_list args);
+size_t sh_util_snprintf(char *buffer, size_t buffer_size, const char *format, ...);
diff --git a/app/src/main/cpp/shadowhook/include/shadowhook.h b/app/src/main/cpp/shadowhook/include/shadowhook.h
new file mode 100644
index 0000000..fec5575
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/include/shadowhook.h
@@ -0,0 +1,191 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// shadowhook is now credited to all its contributors.
+//
+// Before shadowhook was open sourced in February 2022, it was developed by
+// the following developers from ByteDance's App Health Team:
+//
+// Kelun Cai (caikelun@bytedance.com)
+// Pengying Xu (xupengying@bytedance.com)
+//
+
+#ifndef BYTEDANCE_SHADOWHOOK_H
+#define BYTEDANCE_SHADOWHOOK_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#define SHADOWHOOK_VERSION "1.0.9"
+
+#define SHADOWHOOK_ERRNO_OK                     0
+#define SHADOWHOOK_ERRNO_PENDING                1
+#define SHADOWHOOK_ERRNO_UNINIT                 2
+#define SHADOWHOOK_ERRNO_INVALID_ARG            3
+#define SHADOWHOOK_ERRNO_OOM                    4
+#define SHADOWHOOK_ERRNO_MPROT                  5
+#define SHADOWHOOK_ERRNO_WRITE_CRASH            6
+#define SHADOWHOOK_ERRNO_INIT_ERRNO             7
+#define SHADOWHOOK_ERRNO_INIT_SIGSEGV           8
+#define SHADOWHOOK_ERRNO_INIT_SIGBUS            9
+#define SHADOWHOOK_ERRNO_INIT_ENTER             10
+#define SHADOWHOOK_ERRNO_INIT_SAFE              11
+#define SHADOWHOOK_ERRNO_INIT_LINKER            12
+#define SHADOWHOOK_ERRNO_INIT_HUB               13
+#define SHADOWHOOK_ERRNO_HUB_CREAT              14
+#define SHADOWHOOK_ERRNO_MONITOR_DLOPEN         15
+#define SHADOWHOOK_ERRNO_MONITOR_THREAD         16
+#define SHADOWHOOK_ERRNO_HOOK_DLOPEN_CRASH      17
+#define SHADOWHOOK_ERRNO_HOOK_DLSYM             18
+#define SHADOWHOOK_ERRNO_HOOK_DLSYM_CRASH       19
+#define SHADOWHOOK_ERRNO_HOOK_DUP               20
+#define SHADOWHOOK_ERRNO_HOOK_DLADDR_CRASH      21
+#define SHADOWHOOK_ERRNO_HOOK_DLINFO            22
+#define SHADOWHOOK_ERRNO_HOOK_SYMSZ             23
+#define SHADOWHOOK_ERRNO_HOOK_ENTER             24
+#define SHADOWHOOK_ERRNO_HOOK_REWRITE_CRASH     25
+#define SHADOWHOOK_ERRNO_HOOK_REWRITE_FAILED    26
+#define SHADOWHOOK_ERRNO_UNHOOK_NOTFOUND        27
+#define SHADOWHOOK_ERRNO_UNHOOK_CMP_CRASH       28
+#define SHADOWHOOK_ERRNO_UNHOOK_TRAMPO_MISMATCH 29
+#define SHADOWHOOK_ERRNO_UNHOOK_EXIT_MISMATCH   30
+#define SHADOWHOOK_ERRNO_UNHOOK_EXIT_CRASH      31
+#define SHADOWHOOK_ERRNO_UNHOOK_ON_ERROR        32
+#define SHADOWHOOK_ERRNO_UNHOOK_ON_UNFINISHED   33
+#define SHADOWHOOK_ERRNO_ELF_ARCH_MISMATCH      34
+#define SHADOWHOOK_ERRNO_LINKER_ARCH_MISMATCH   35
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+const char *shadowhook_get_version(void);
+
+// init
+typedef enum {
+  SHADOWHOOK_MODE_SHARED = 0,  // a function can be hooked multiple times
+  SHADOWHOOK_MODE_UNIQUE = 1   // a function can only be hooked once, and hooking again will report an error
+} shadowhook_mode_t;
+int shadowhook_init(shadowhook_mode_t mode, bool debuggable);
+int shadowhook_get_init_errno(void);
+
+// get and set attributes
+#define SHADOWHOOK_IS_SHARED_MODE (SHADOWHOOK_MODE_SHARED == shadowhook_get_mode())
+#define SHADOWHOOK_IS_UNIQUE_MODE (SHADOWHOOK_MODE_UNIQUE == shadowhook_get_mode())
+shadowhook_mode_t shadowhook_get_mode(void);
+bool shadowhook_get_debuggable(void);
+void shadowhook_set_debuggable(bool debuggable);
+bool shadowhook_get_recordable(void);
+void shadowhook_set_recordable(bool recordable);
+
+// get error-number and error message
+int shadowhook_get_errno(void);
+const char *shadowhook_to_errmsg(int error_number);
+
+// hook and unhook
+typedef void (*shadowhook_hooked_t)(int error_number, const char *lib_name, const char *sym_name,
+                                    void *sym_addr, void *new_addr, void *orig_addr, void *arg);
+void *shadowhook_hook_func_addr(void *func_addr, void *new_addr, void **orig_addr);
+void *shadowhook_hook_sym_addr(void *sym_addr, void *new_addr, void **orig_addr);
+void *shadowhook_hook_sym_name(const char *lib_name, const char *sym_name, void *new_addr, void **orig_addr);
+void *shadowhook_hook_sym_name_callback(const char *lib_name, const char *sym_name, void *new_addr,
+                                        void **orig_addr, shadowhook_hooked_t hooked, void *hooked_arg);
+int shadowhook_unhook(void *stub);
+
+// get operation records
+#define SHADOWHOOK_RECORD_ITEM_ALL             0x3FF  // 0b1111111111
+#define SHADOWHOOK_RECORD_ITEM_TIMESTAMP       (1 << 0)
+#define SHADOWHOOK_RECORD_ITEM_CALLER_LIB_NAME (1 << 1)
+#define SHADOWHOOK_RECORD_ITEM_OP              (1 << 2)
+#define SHADOWHOOK_RECORD_ITEM_LIB_NAME        (1 << 3)
+#define SHADOWHOOK_RECORD_ITEM_SYM_NAME        (1 << 4)
+#define SHADOWHOOK_RECORD_ITEM_SYM_ADDR        (1 << 5)
+#define SHADOWHOOK_RECORD_ITEM_NEW_ADDR        (1 << 6)
+#define SHADOWHOOK_RECORD_ITEM_BACKUP_LEN      (1 << 7)
+#define SHADOWHOOK_RECORD_ITEM_ERRNO           (1 << 8)
+#define SHADOWHOOK_RECORD_ITEM_STUB            (1 << 9)
+char *shadowhook_get_records(uint32_t item_flags);
+void shadowhook_dump_records(int fd, uint32_t item_flags);
+
+// helper functions for "get symbol-address from library-name and symbol-name"
+void *shadowhook_dlopen(const char *lib_name);
+void shadowhook_dlclose(void *handle);
+void *shadowhook_dlsym(void *handle, const char *sym_name);
+void *shadowhook_dlsym_dynsym(void *handle, const char *sym_name);
+void *shadowhook_dlsym_symtab(void *handle, const char *sym_name);
+
+// for internal use
+void *shadowhook_get_prev_func(void *func);
+void shadowhook_pop_stack(void *return_address);
+void shadowhook_allow_reentrant(void *return_address);
+void shadowhook_disallow_reentrant(void *return_address);
+void *shadowhook_get_return_address(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+// call previous function in proxy-function
+#ifdef __cplusplus
+#define SHADOWHOOK_CALL_PREV(func, ...) \
+  ((decltype(&(func)))shadowhook_get_prev_func((void *)(func)))(__VA_ARGS__)
+#else
+#define SHADOWHOOK_CALL_PREV(func, func_sig, ...) \
+  ((func_sig)shadowhook_get_prev_func((void *)(func)))(__VA_ARGS__)
+#endif
+// pop stack in proxy-function (for C/C++)
+#define SHADOWHOOK_POP_STACK()                                                        \
+  do {                                                                                \
+    if (SHADOWHOOK_IS_SHARED_MODE) shadowhook_pop_stack(__builtin_return_address(0)); \
+  } while (0)
+
+// pop stack in proxy-function (for C++ only)
+#ifdef __cplusplus
+class ShadowhookStackScope {
+ public:
+  ShadowhookStackScope(void *return_address) : return_address_(return_address) {}
+  ~ShadowhookStackScope() {
+    if (SHADOWHOOK_IS_SHARED_MODE) shadowhook_pop_stack(return_address_);
+  }
+
+ private:
+  void *return_address_;
+};
+#define SHADOWHOOK_STACK_SCOPE() ShadowhookStackScope shadowhook_stack_scope_obj(__builtin_return_address(0))
+#endif
+
+// allow reentrant of the current proxy-function
+#define SHADOWHOOK_ALLOW_REENTRANT()                                                        \
+  do {                                                                                      \
+    if (SHADOWHOOK_IS_SHARED_MODE) shadowhook_allow_reentrant(__builtin_return_address(0)); \
+  } while (0)
+
+// disallow reentrant of the current proxy-function
+#define SHADOWHOOK_DISALLOW_REENTRANT()                                                        \
+  do {                                                                                         \
+    if (SHADOWHOOK_IS_SHARED_MODE) shadowhook_disallow_reentrant(__builtin_return_address(0)); \
+  } while (0)
+
+// get return address in proxy-function
+#define SHADOWHOOK_RETURN_ADDRESS() \
+  ((void *)(SHADOWHOOK_IS_SHARED_MODE ? shadowhook_get_return_address() : __builtin_return_address(0)))
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/sh_enter.c b/app/src/main/cpp/shadowhook/sh_enter.c
new file mode 100644
index 0000000..f30b811
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_enter.c
@@ -0,0 +1,47 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_enter.h"
+
+#include <stdint.h>
+
+#include "sh_trampo.h"
+
+#define SH_ENTER_PAGE_NAME "shadowhook-enter"
+#define SH_ENTER_SZ        256
+#define SH_ENTER_DELAY_SEC 10
+
+static sh_trampo_mgr_t sh_enter_trampo_mgr;
+
+int sh_enter_init(void) {
+  sh_trampo_init_mgr(&sh_enter_trampo_mgr, SH_ENTER_PAGE_NAME, SH_ENTER_SZ, SH_ENTER_DELAY_SEC);
+  return 0;
+}
+
+uintptr_t sh_enter_alloc(void) {
+  return sh_trampo_alloc(&sh_enter_trampo_mgr, 0, 0, 0);
+}
+
+void sh_enter_free(uintptr_t enter) {
+  sh_trampo_free(&sh_enter_trampo_mgr, enter);
+}
diff --git a/app/src/main/cpp/shadowhook/sh_enter.h b/app/src/main/cpp/shadowhook/sh_enter.h
new file mode 100644
index 0000000..89ba8e5
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_enter.h
@@ -0,0 +1,30 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdint.h>
+
+int sh_enter_init(void);
+
+uintptr_t sh_enter_alloc(void);
+void sh_enter_free(uintptr_t enter);
diff --git a/app/src/main/cpp/shadowhook/sh_exit.c b/app/src/main/cpp/shadowhook/sh_exit.c
new file mode 100644
index 0000000..2ae905d
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_exit.c
@@ -0,0 +1,420 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_exit.h"
+
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "sh_config.h"
+#include "sh_log.h"
+#include "sh_sig.h"
+#include "sh_trampo.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "xdl.h"
+
+#define SH_EXIT_PAGE_NAME "shadowhook-exit"
+#if defined(__arm__)
+#define SH_EXIT_SZ 8
+#elif defined(__aarch64__)
+#define SH_EXIT_SZ 16
+#endif
+#define SH_EXIT_DELAY_SEC 2
+#define SH_EXIT_GAPS_CAP  16
+
+// Used to identify whether the ELF gap has been zero-filled,
+// and also serves as a guard instruction.
+#if defined(__arm__)
+#define SH_EXIT_CLEAR_FLAG 0xE1200070BE00BE00  // BKPT #0(thumb) + BKPT #0(thumb) + BKPT #0(arm)
+#elif defined(__aarch64__)
+#define SH_EXIT_CLEAR_FLAG 0xD4200000D4200000  // BRK #0 + BRK #0
+#endif
+
+#define SH_EXIT_TYPE_OUT_LIBRARY 0
+#define SH_EXIT_TYPE_IN_LIBRARY  1
+
+extern __attribute((weak)) unsigned long int getauxval(unsigned long int);
+
+static pthread_mutex_t sh_exit_lock = PTHREAD_MUTEX_INITIALIZER;
+static sh_trampo_mgr_t sh_exit_trampo_mgr;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+typedef struct {
+  uintptr_t load_bias;
+  const ElfW(Phdr) *dlpi_phdr;
+  ElfW(Half) dlpi_phnum;
+} sh_exit_elfinfo_t;
+#pragma clang diagnostic pop
+
+static sh_exit_elfinfo_t sh_exit_app_process_info;
+static sh_exit_elfinfo_t sh_exit_linker_info;
+static sh_exit_elfinfo_t sh_exit_vdso_info;  // vdso may not exist
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu-statement-expression"
+
+static void sh_exit_init_elfinfo(unsigned long type, sh_exit_elfinfo_t *info) {
+  if (__predict_false(NULL == getauxval)) goto err;
+
+  uintptr_t val = (uintptr_t)getauxval(type);
+  if (__predict_false(0 == val)) goto err;
+
+  // get base
+  uintptr_t base = (AT_PHDR == type ? (val & (~0xffful)) : val);
+  if (__predict_false(0 != memcmp((void *)base, ELFMAG, SELFMAG))) goto err;
+
+  // ELF info
+  ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)base;
+  const ElfW(Phdr) *dlpi_phdr = (const ElfW(Phdr) *)(base + ehdr->e_phoff);
+  ElfW(Half) dlpi_phnum = ehdr->e_phnum;
+
+  // get load_bias
+  uintptr_t min_vaddr = UINTPTR_MAX;
+  for (size_t i = 0; i < dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(dlpi_phdr[i]);
+    if (PT_LOAD == phdr->p_type) {
+      if (min_vaddr > phdr->p_vaddr) min_vaddr = phdr->p_vaddr;
+    }
+  }
+  if (__predict_false(UINTPTR_MAX == min_vaddr || base < min_vaddr)) goto err;
+  uintptr_t load_bias = base - min_vaddr;
+
+  info->load_bias = load_bias;
+  info->dlpi_phdr = dlpi_phdr;
+  info->dlpi_phnum = dlpi_phnum;
+  return;
+
+err:
+  info->load_bias = 0;
+  info->dlpi_phdr = NULL;
+  info->dlpi_phnum = 0;
+}
+
+void sh_exit_init(void) {
+  // init for out-library mode
+  sh_trampo_init_mgr(&sh_exit_trampo_mgr, SH_EXIT_PAGE_NAME, SH_EXIT_SZ, SH_EXIT_DELAY_SEC);
+
+  // init for in-library mode
+  sh_exit_init_elfinfo(AT_PHDR, &sh_exit_app_process_info);
+  sh_exit_init_elfinfo(AT_BASE, &sh_exit_linker_info);
+  sh_exit_init_elfinfo(AT_SYSINFO_EHDR, &sh_exit_vdso_info);
+}
+
+// out-library mode:
+//
+// We store the shellcode for exit in mmaped memory near the PC.
+//
+
+static int sh_exit_alloc_out_library(uintptr_t *exit_addr, uintptr_t pc, xdl_info_t *dlinfo, uint8_t *exit,
+                                     size_t exit_len, size_t range_low, size_t range_high) {
+  (void)dlinfo;
+
+  uintptr_t addr = sh_trampo_alloc(&sh_exit_trampo_mgr, pc, range_low, range_high);
+  if (0 == addr) return -1;
+
+  memcpy((void *)addr, exit, exit_len);
+  sh_util_clear_cache(addr, exit_len);
+  *exit_addr = addr;
+  return 0;
+}
+
+static void sh_exit_free_out_library(uintptr_t exit_addr) {
+  sh_trampo_free(&sh_exit_trampo_mgr, exit_addr);
+}
+
+// in-library mode:
+//
+// We store the shellcode for exit in the memory gaps in the ELF.
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+typedef struct {
+  uintptr_t start;
+  uintptr_t end;
+  bool need_fill_zero;
+  bool readable;
+} sh_exit_gap_t;
+#pragma clang diagnostic pop
+
+static size_t sh_exit_get_gaps(xdl_info_t *dlinfo, sh_exit_gap_t *gaps, size_t gaps_cap,
+                               bool elf_loaded_by_kernel) {
+  size_t gaps_used = 0;
+
+  for (size_t i = 0; i < dlinfo->dlpi_phnum; i++) {
+    // current LOAD segment
+    const ElfW(Phdr) *cur_phdr = &(dlinfo->dlpi_phdr[i]);
+    if (PT_LOAD != cur_phdr->p_type) continue;
+
+    // next LOAD segment
+    const ElfW(Phdr) *next_phdr = NULL;
+    if (!elf_loaded_by_kernel) {
+      for (size_t j = i + 1; j < dlinfo->dlpi_phnum; j++) {
+        if (PT_LOAD == dlinfo->dlpi_phdr[j].p_type) {
+          next_phdr = &(dlinfo->dlpi_phdr[j]);
+          break;
+        }
+      }
+    }
+
+    uintptr_t cur_end = (uintptr_t)dlinfo->dli_fbase + cur_phdr->p_vaddr + cur_phdr->p_memsz;
+    uintptr_t cur_page_end = SH_UTIL_PAGE_END(cur_end);
+    uintptr_t cur_file_end = (uintptr_t)dlinfo->dli_fbase + cur_phdr->p_vaddr + cur_phdr->p_filesz;
+    uintptr_t cur_file_page_end = SH_UTIL_PAGE_END(cur_file_end);
+    uintptr_t next_page_start =
+        (NULL == next_phdr ? cur_page_end
+                           : SH_UTIL_PAGE_START((uintptr_t)dlinfo->dli_fbase + next_phdr->p_vaddr));
+
+    sh_exit_gap_t gap = {0, 0, false, false};
+    if (cur_phdr->p_flags & PF_X) {
+      // From: last PF_X page's unused memory tail space.
+      // To: next page start.
+      gap.start = SH_UTIL_ALIGN_END(cur_end, 0x10);
+      gap.end = next_page_start;
+      gap.need_fill_zero = true;
+      gap.readable = (cur_phdr->p_flags & PF_R && cur_page_end == next_page_start);
+    } else if (cur_page_end > cur_file_page_end) {
+      // From: last .bss page(which must NOT be file backend)'s unused memory tail space.
+      // To: next page start.
+      gap.start = SH_UTIL_ALIGN_END(cur_end, 0x10);
+      gap.end = next_page_start;
+      gap.need_fill_zero = false;
+      gap.readable = (cur_phdr->p_flags & PF_R && cur_page_end == next_page_start);
+    } else if (next_page_start > cur_page_end) {
+      // Entire unused memory pages.
+      gap.start = cur_page_end;
+      gap.end = next_page_start;
+      gap.need_fill_zero = true;
+      gap.readable = false;
+    }
+
+    if ((gap.need_fill_zero && gap.end > gap.start + 0x10) || (!gap.need_fill_zero && gap.end > gap.start)) {
+      SH_LOG_INFO("exit: gap, %" PRIxPTR " - %" PRIxPTR " (load_bias %" PRIxPTR ", %" PRIxPTR " - %" PRIxPTR
+                  "), NFZ %d, READABLE %d",
+                  gap.start, gap.end, (uintptr_t)dlinfo->dli_fbase, gap.start - (uintptr_t)dlinfo->dli_fbase,
+                  gap.end - (uintptr_t)dlinfo->dli_fbase, gap.need_fill_zero ? 1 : 0, gap.readable ? 1 : 0);
+      gaps[gaps_used].start = gap.start;
+      gaps[gaps_used].end = gap.end;
+      gaps[gaps_used].need_fill_zero = gap.need_fill_zero;
+      gaps[gaps_used].readable = gap.readable;
+      gaps_used++;
+    }
+
+    if (gaps_used >= gaps_cap) break;
+  }
+
+  return gaps_used;
+}
+
+static bool sh_exit_is_in_elf_range(uintptr_t pc, sh_exit_elfinfo_t *info) {
+  if (pc < info->load_bias) return false;
+
+  uintptr_t vaddr = pc - info->load_bias;
+  for (size_t i = 0; i < info->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(info->dlpi_phdr[i]);
+    if (PT_LOAD != phdr->p_type) continue;
+
+    if (phdr->p_vaddr <= vaddr && vaddr < phdr->p_vaddr + phdr->p_memsz) return true;
+  }
+
+  return false;
+}
+
+static bool sh_exit_is_elf_loaded_by_kernel(uintptr_t pc) {
+  if (NULL == sh_exit_app_process_info.dlpi_phdr) return true;
+  if (sh_exit_is_in_elf_range(pc, &sh_exit_app_process_info)) return true;
+
+  if (NULL == sh_exit_linker_info.dlpi_phdr) return true;
+  if (sh_exit_is_in_elf_range(pc, &sh_exit_linker_info)) return true;
+
+  // vdso may not exist
+  if (NULL != sh_exit_vdso_info.dlpi_phdr)
+    if (sh_exit_is_in_elf_range(pc, &sh_exit_vdso_info)) return true;
+
+  return false;
+}
+
+static bool sh_exit_is_zero(uintptr_t buf, size_t buf_len) {
+  for (uintptr_t i = buf; i < buf + buf_len; i += sizeof(uintptr_t))
+    if (*((uintptr_t *)i) != 0) return false;
+
+  return true;
+}
+
+static int sh_exit_fill_zero(uintptr_t start, uintptr_t end, bool readable, xdl_info_t *dlinfo) {
+  size_t size = end - start;
+  bool set_prot_rwx = false;
+
+  if (!readable) {
+    if (0 != sh_util_mprotect(start, size, PROT_READ | PROT_WRITE | PROT_EXEC)) return -1;
+    set_prot_rwx = true;
+  }
+
+  if (*((uint64_t *)start) != SH_EXIT_CLEAR_FLAG) {
+    SH_LOG_INFO("exit: gap fill zero, %" PRIxPTR " - %" PRIxPTR " (load_bias %" PRIxPTR ", %" PRIxPTR
+                " - %" PRIxPTR "), READABLE %d",
+                start, end, (uintptr_t)dlinfo->dli_fbase, start - (uintptr_t)dlinfo->dli_fbase,
+                end - (uintptr_t)dlinfo->dli_fbase, readable ? 1 : 0);
+    if (!set_prot_rwx)
+      if (0 != sh_util_mprotect(start, size, PROT_READ | PROT_WRITE | PROT_EXEC)) return -1;
+    memset((void *)start, 0, size);
+    *((uint64_t *)(start)) = SH_EXIT_CLEAR_FLAG;
+    sh_util_clear_cache(start, size);
+  }
+
+  return 0;
+}
+
+static int sh_exit_try_alloc_in_library(uintptr_t *exit_addr, uintptr_t pc, xdl_info_t *dlinfo, uint8_t *exit,
+                                        size_t exit_len, size_t range_low, size_t range_high, uintptr_t start,
+                                        uintptr_t end) {
+  if (pc >= range_low) start = SH_UTIL_MAX(start, pc - range_low);
+  start = SH_UTIL_ALIGN_END(start, exit_len);
+
+  if (range_high <= UINTPTR_MAX - pc) end = SH_UTIL_MIN(end - exit_len, pc + range_high);
+  end = SH_UTIL_ALIGN_START(end, exit_len);
+
+  if (end < start) return -1;
+  SH_LOG_INFO("exit: gap resize, %" PRIxPTR " - %" PRIxPTR " (load_bias %" PRIxPTR ", %" PRIxPTR
+              " - %" PRIxPTR ")",
+              start, end, (uintptr_t)dlinfo->dli_fbase, start - (uintptr_t)dlinfo->dli_fbase,
+              end - (uintptr_t)dlinfo->dli_fbase);
+
+  for (uintptr_t cur = start; cur <= end; cur += exit_len) {
+    // check if the current space has been used
+    if (!sh_exit_is_zero(cur, exit_len)) continue;
+
+    // write shellcode to the current location
+    if (0 != sh_util_mprotect(cur, exit_len, PROT_READ | PROT_WRITE | PROT_EXEC)) return -1;
+    memcpy((void *)cur, exit, exit_len);
+    sh_util_clear_cache(cur, exit_len);
+    *exit_addr = cur;
+    SH_LOG_INFO("exit: in-library alloc, at %" PRIxPTR " (load_bias %" PRIxPTR ", %" PRIxPTR "), len %zu",
+                cur, (uintptr_t)dlinfo->dli_fbase, cur - (uintptr_t)dlinfo->dli_fbase, exit_len);
+    return 0;
+  }
+  return -1;
+}
+
+static int sh_exit_alloc_in_library(uintptr_t *exit_addr, uintptr_t pc, xdl_info_t *dlinfo, uint8_t *exit,
+                                    size_t exit_len, size_t range_low, size_t range_high) {
+  int r = -1;
+  *exit_addr = 0;
+
+  bool elf_loaded_by_kernel = sh_exit_is_elf_loaded_by_kernel(pc);
+
+  pthread_mutex_lock(&sh_exit_lock);
+
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    sh_exit_gap_t gaps[SH_EXIT_GAPS_CAP];
+    size_t gaps_used = sh_exit_get_gaps(dlinfo, gaps, SH_EXIT_GAPS_CAP, elf_loaded_by_kernel);
+    for (size_t i = 0; i < gaps_used; i++) {
+      // fill zero
+      if (gaps[i].need_fill_zero) {
+        if (0 != sh_exit_fill_zero(gaps[i].start, gaps[i].end, gaps[i].readable, dlinfo)) return -1;
+      }
+
+      if (0 == (r = sh_exit_try_alloc_in_library(exit_addr, pc, dlinfo, exit, exit_len, range_low, range_high,
+                                                 gaps[i].start, gaps[i].end)))
+        break;
+    }
+  }
+  SH_SIG_CATCH() {
+    r = -1;
+    *exit_addr = 0;
+    SH_LOG_WARN("exit: alloc crashed");
+  }
+  SH_SIG_EXIT
+
+  pthread_mutex_unlock(&sh_exit_lock);
+  return r;
+}
+
+static int sh_exit_free_in_library(uintptr_t exit_addr, uint8_t *exit, size_t exit_len) {
+  int r;
+
+  pthread_mutex_lock(&sh_exit_lock);
+
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    if (0 != memcmp((void *)exit_addr, exit, exit_len)) {
+      r = SHADOWHOOK_ERRNO_UNHOOK_EXIT_MISMATCH;
+      goto err;
+    }
+    if (0 != sh_util_mprotect((uintptr_t)exit_addr, exit_len, PROT_READ | PROT_WRITE | PROT_EXEC)) {
+      r = SHADOWHOOK_ERRNO_MPROT;
+      goto err;
+    }
+    memset((void *)exit_addr, 0, exit_len);
+    sh_util_clear_cache((uintptr_t)exit_addr, exit_len);
+    r = 0;
+  err:;
+  }
+  SH_SIG_CATCH() {
+    r = SHADOWHOOK_ERRNO_UNHOOK_EXIT_CRASH;
+    SH_LOG_WARN("exit: free crashed");
+  }
+  SH_SIG_EXIT
+
+  pthread_mutex_unlock(&sh_exit_lock);
+  return r;
+}
+
+int sh_exit_alloc(uintptr_t *exit_addr, uint16_t *exit_type, uintptr_t pc, xdl_info_t *dlinfo, uint8_t *exit,
+                  size_t exit_len, size_t range_low, size_t range_high) {
+  int r;
+
+  // (1) try out-library mode first. Because ELF gaps are a valuable non-renewable resource.
+  *exit_type = SH_EXIT_TYPE_OUT_LIBRARY;
+  r = sh_exit_alloc_out_library(exit_addr, pc, dlinfo, exit, exit_len, range_low, range_high);
+  if (0 == r) goto ok;
+
+  // (2) try in-library mode.
+  *exit_type = SH_EXIT_TYPE_IN_LIBRARY;
+  r = sh_exit_alloc_in_library(exit_addr, pc, dlinfo, exit, exit_len, range_low, range_high);
+  if (0 == r) goto ok;
+
+  return r;
+
+ok:
+  SH_LOG_INFO("exit: alloc %s library, exit %" PRIxPTR ", pc %" PRIxPTR ", distance %" PRIxPTR
+              ", range [-%zx, %zx]",
+              (*exit_type == SH_EXIT_TYPE_OUT_LIBRARY ? "out" : "in"), *exit_addr, pc,
+              (pc > *exit_addr ? pc - *exit_addr : *exit_addr - pc), range_low, range_high);
+  return 0;
+}
+
+int sh_exit_free(uintptr_t exit_addr, uint16_t exit_type, uint8_t *exit, size_t exit_len) {
+  if (SH_EXIT_TYPE_OUT_LIBRARY == exit_type) {
+    (void)exit, (void)exit_len;
+    sh_exit_free_out_library(exit_addr);
+    return 0;
+  } else
+    return sh_exit_free_in_library(exit_addr, exit, exit_len);
+}
+
+#pragma clang diagnostic pop
diff --git a/app/src/main/cpp/shadowhook/sh_exit.h b/app/src/main/cpp/shadowhook/sh_exit.h
new file mode 100644
index 0000000..e0f46b6
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_exit.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+
+#include "xdl.h"
+
+void sh_exit_init(void);
+
+int sh_exit_alloc(uintptr_t *exit_addr, uint16_t *exit_type, uintptr_t pc, xdl_info_t *dlinfo, uint8_t *exit,
+                  size_t exit_len, size_t range_low, size_t range_high);
+int sh_exit_free(uintptr_t exit_addr, uint16_t exit_type, uint8_t *exit, size_t exit_len);
diff --git a/app/src/main/cpp/shadowhook/sh_hub.c b/app/src/main/cpp/shadowhook/sh_hub.c
new file mode 100644
index 0000000..eef9a34
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_hub.c
@@ -0,0 +1,538 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_hub.h"
+
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/prctl.h>
+
+#include "queue.h"
+#include "sh_log.h"
+#include "sh_safe.h"
+#include "sh_sig.h"
+#include "sh_trampo.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "tree.h"
+
+#define SH_HUB_TRAMPO_PAGE_NAME "shadowhook-hub-trampo"
+#define SH_HUB_TRAMPO_DELAY_SEC 5
+#define SH_HUB_STACK_NAME       "shadowhook-hub-stack"
+#define SH_HUB_STACK_SIZE       4096
+#define SH_HUB_STACK_FRAME_MAX  127  // keep sizeof(sh_hub_stack_t) < 4K
+#define SH_HUB_THREAD_MAX       1024
+#define SH_HUB_DELAY_SEC        10
+
+#define SH_HUB_FRAME_FLAG_NONE            ((uintptr_t)0)
+#define SH_HUB_FRAME_FLAG_ALLOW_REENTRANT ((uintptr_t)(1 << 0))
+
+// proxy for each hook-task in the same target-address
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+typedef struct sh_hub_proxy {
+  void *func;
+  bool enabled;
+  SLIST_ENTRY(sh_hub_proxy, ) link;
+} sh_hub_proxy_t;
+#pragma clang diagnostic pop
+
+// proxy list for each hub
+typedef SLIST_HEAD(sh_hub_proxy_list, sh_hub_proxy, ) sh_hub_proxy_list_t;
+
+// frame in the stack
+typedef struct {
+  sh_hub_proxy_list_t proxies;
+  uintptr_t orig_addr;
+  void *return_address;
+  uintptr_t flags;
+} sh_hub_frame_t;
+
+// stack for each thread
+typedef struct {
+  size_t frames_cnt;
+  sh_hub_frame_t frames[SH_HUB_STACK_FRAME_MAX];
+} sh_hub_stack_t;
+
+// hub for each target-address
+struct sh_hub {
+  sh_hub_proxy_list_t proxies;
+  pthread_mutex_t proxies_lock;
+  uintptr_t orig_addr;
+  uintptr_t trampo;
+  time_t destroy_ts;
+  LIST_ENTRY(sh_hub, ) link;
+};
+
+// hub list for delayed-destroy staging
+typedef LIST_HEAD(sh_hub_list, sh_hub, ) sh_hub_list_t;
+
+// global data for hub delayed-destroy staging
+static sh_hub_list_t sh_hub_delayed_destroy;
+static pthread_mutex_t sh_hub_delayed_destroy_lock;
+
+// global data for trampo
+static sh_trampo_mgr_t sh_hub_trampo_mgr;
+
+// global data for stack
+static pthread_key_t sh_hub_stack_tls_key;
+static sh_hub_stack_t *sh_hub_stack_cache;
+static uint8_t *sh_hub_stack_cache_used;
+
+// hub trampoline template
+extern void *sh_hub_trampo_template_data __attribute__((visibility("hidden")));
+__attribute__((naked)) static void sh_hub_trampo_template(void) {
+#if defined(__arm__)
+  __asm__(
+      // Save parameter registers, LR
+      "push  { r0 - r3, lr }     \n"
+
+      // Call sh_hub_push_stack()
+      "ldr   r0, hub_ptr         \n"
+      "mov   r1, lr              \n"
+      "ldr   ip, push_stack      \n"
+      "blx   ip                  \n"
+
+      // Save the hook function's address to IP register
+      "mov   ip, r0              \n"
+
+      // Restore parameter registers, LR
+      "pop   { r0 - r3, lr }     \n"
+
+      // Call hook function
+      "bx    ip                  \n"
+
+      "sh_hub_trampo_template_data:"
+      ".global sh_hub_trampo_template_data;"
+      "push_stack:"
+      ".word 0;"
+      "hub_ptr:"
+      ".word 0;");
+#elif defined(__aarch64__)
+  __asm__(
+      // Save parameter registers, XR(X8), LR
+      "stp   x0, x1, [sp, #-0xd0]!    \n"
+      "stp   x2, x3, [sp, #0x10]      \n"
+      "stp   x4, x5, [sp, #0x20]      \n"
+      "stp   x6, x7, [sp, #0x30]      \n"
+      "stp   x8, lr, [sp, #0x40]      \n"
+      "stp   q0, q1, [sp, #0x50]      \n"
+      "stp   q2, q3, [sp, #0x70]      \n"
+      "stp   q4, q5, [sp, #0x90]      \n"
+      "stp   q6, q7, [sp, #0xb0]      \n"
+
+      // Call sh_hub_push_stack()
+      "ldr   x0, hub_ptr              \n"
+      "mov   x1, lr                   \n"
+      "ldr   x16, push_stack          \n"
+      "blr   x16                      \n"
+
+      // Save the hook function's address to IP register
+      "mov   x16, x0                  \n"
+
+      // Restore parameter registers, XR(X8), LR
+      "ldp   q6, q7, [sp, #0xb0]      \n"
+      "ldp   q4, q5, [sp, #0x90]      \n"
+      "ldp   q2, q3, [sp, #0x70]      \n"
+      "ldp   q0, q1, [sp, #0x50]      \n"
+      "ldp   x8, lr, [sp, #0x40]      \n"
+      "ldp   x6, x7, [sp, #0x30]      \n"
+      "ldp   x4, x5, [sp, #0x20]      \n"
+      "ldp   x2, x3, [sp, #0x10]      \n"
+      "ldp   x0, x1, [sp], #0xd0      \n"
+
+      // Call hook function
+      "br    x16                      \n"
+
+      "sh_hub_trampo_template_data:"
+      ".global sh_hub_trampo_template_data;"
+      "push_stack:"
+      ".quad 0;"
+      "hub_ptr:"
+      ".quad 0;");
+#endif
+}
+
+static void *sh_hub_trampo_template_start(void) {
+#if defined(__arm__) && defined(__thumb__)
+  return (void *)((uintptr_t)&sh_hub_trampo_template - 1);
+#else
+  return (void *)&sh_hub_trampo_template;
+#endif
+}
+
+static sh_hub_stack_t *sh_hub_stack_create(void) {
+  // get stack from global cache
+  for (size_t i = 0; i < SH_HUB_THREAD_MAX; i++) {
+    uint8_t *used = &(sh_hub_stack_cache_used[i]);
+    if (0 == *used) {
+      uint8_t expected = 0;
+      if (__atomic_compare_exchange_n(used, &expected, 1, false, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED)) {
+        sh_hub_stack_t *stack = &(sh_hub_stack_cache[i]);
+        stack->frames_cnt = 0;
+        SH_LOG_DEBUG("hub: get stack from global cache[%zu] %p", i, (void *)stack);
+        return stack;  // OK
+      }
+    }
+  }
+
+  // create new stack by mmap
+  int prot = PROT_READ | PROT_WRITE;
+  int flags = MAP_PRIVATE | MAP_ANONYMOUS;
+  void *buf = sh_safe_mmap(NULL, SH_HUB_STACK_SIZE, prot, flags, -1, 0);
+  if (MAP_FAILED == buf) return NULL;  // failed
+  sh_safe_prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, (unsigned long)buf, SH_HUB_STACK_SIZE,
+                (unsigned long)SH_HUB_STACK_NAME);
+  sh_hub_stack_t *stack = (sh_hub_stack_t *)buf;
+  stack->frames_cnt = 0;
+  return stack;  // OK
+}
+
+static void sh_hub_stack_destroy(void *buf) {
+  if (NULL == buf) return;
+
+  if ((uintptr_t)sh_hub_stack_cache <= (uintptr_t)buf &&
+      (uintptr_t)buf < ((uintptr_t)sh_hub_stack_cache + SH_HUB_THREAD_MAX * sizeof(sh_hub_stack_t))) {
+    // return stack to global cache
+    size_t i = ((uintptr_t)buf - (uintptr_t)sh_hub_stack_cache) / sizeof(sh_hub_stack_t);
+    uint8_t *used = &(sh_hub_stack_cache_used[i]);
+    if (1 != *used) abort();
+    __atomic_store_n(used, 0, __ATOMIC_RELEASE);
+    SH_LOG_DEBUG("hub: return stack to global cache[%zu] %p", i, buf);
+  } else {
+    // munmap stack
+    munmap(buf, SH_HUB_STACK_SIZE);
+  }
+}
+
+int sh_hub_init(void) {
+  LIST_INIT(&sh_hub_delayed_destroy);
+  pthread_mutex_init(&sh_hub_delayed_destroy_lock, NULL);
+
+  // init TLS key
+  if (__predict_false(0 != pthread_key_create(&sh_hub_stack_tls_key, sh_hub_stack_destroy))) return -1;
+
+  // init hub's stack cache
+  if (__predict_false(NULL == (sh_hub_stack_cache = malloc(SH_HUB_THREAD_MAX * sizeof(sh_hub_stack_t)))))
+    return -1;
+  if (__predict_false(NULL == (sh_hub_stack_cache_used = calloc(SH_HUB_THREAD_MAX, sizeof(uint8_t)))))
+    return -1;
+
+  // init hub's trampoline manager
+  size_t code_size = (uintptr_t)(&sh_hub_trampo_template_data) - (uintptr_t)(sh_hub_trampo_template_start());
+  size_t data_size = sizeof(void *) + sizeof(void *);
+  sh_trampo_init_mgr(&sh_hub_trampo_mgr, SH_HUB_TRAMPO_PAGE_NAME, code_size + data_size,
+                     SH_HUB_TRAMPO_DELAY_SEC);
+
+  return 0;
+}
+
+static void *sh_hub_push_stack(sh_hub_t *self, void *return_address) {
+  sh_hub_stack_t *stack = (sh_hub_stack_t *)sh_safe_pthread_getspecific(sh_hub_stack_tls_key);
+
+  // create stack, only once
+  if (__predict_false(NULL == stack)) {
+    if (__predict_false(NULL == (stack = sh_hub_stack_create()))) goto end;
+    sh_safe_pthread_setspecific(sh_hub_stack_tls_key, (void *)stack);
+  }
+
+  // check whether a recursive call occurred
+  bool recursive = false;
+  for (size_t i = stack->frames_cnt; i > 0; i--) {
+    sh_hub_frame_t *frame = &stack->frames[i - 1];
+    if (0 == (frame->flags & SH_HUB_FRAME_FLAG_ALLOW_REENTRANT) && (frame->orig_addr == self->orig_addr)) {
+      // recursive call found
+      recursive = true;
+      break;
+    }
+  }
+
+  // find and return the first enabled proxy's function in the proxy-list
+  // (does not include the original function)
+  if (!recursive) {
+    sh_hub_proxy_t *proxy;
+    SLIST_FOREACH(proxy, &self->proxies, link) {
+      if (proxy->enabled) {
+        // push a new frame for the current proxy
+        if (stack->frames_cnt >= SH_HUB_STACK_FRAME_MAX) goto end;
+        stack->frames_cnt++;
+        SH_LOG_DEBUG("hub: frames_cnt++ = %zu", stack->frames_cnt);
+        sh_hub_frame_t *frame = &stack->frames[stack->frames_cnt - 1];
+        frame->proxies = self->proxies;
+        frame->orig_addr = self->orig_addr;
+        frame->return_address = return_address;
+        frame->flags = SH_HUB_FRAME_FLAG_NONE;
+
+        // return the first enabled proxy's function
+        SH_LOG_DEBUG("hub: push_stack() return first enabled proxy %p", proxy->func);
+        return proxy->func;
+      }
+    }
+  }
+
+  // if not found enabled proxy in the proxy-list, or recursive call found,
+  // just return the original-function
+end:
+  SH_LOG_DEBUG("hub: push_stack() return orig_addr %p", (void *)self->orig_addr);
+  return (void *)self->orig_addr;
+}
+
+void sh_hub_pop_stack(void *return_address) {
+  sh_hub_stack_t *stack = (sh_hub_stack_t *)sh_safe_pthread_getspecific(sh_hub_stack_tls_key);
+  if (0 == stack->frames_cnt) return;
+  sh_hub_frame_t *frame = &stack->frames[stack->frames_cnt - 1];
+
+  // only the first proxy will actually execute pop-stack()
+  if (frame->return_address == return_address) {
+    stack->frames_cnt--;
+    SH_LOG_DEBUG("hub: frames_cnt-- = %zu", stack->frames_cnt);
+  }
+}
+
+sh_hub_t *sh_hub_create(uintptr_t target_addr, uintptr_t *trampo) {
+  size_t code_size = (uintptr_t)(&sh_hub_trampo_template_data) - (uintptr_t)(sh_hub_trampo_template_start());
+  size_t data_size = sizeof(void *) + sizeof(void *);
+
+  sh_hub_t *self = malloc(sizeof(sh_hub_t));
+  if (NULL == self) return NULL;
+  SLIST_INIT(&self->proxies);
+  pthread_mutex_init(&self->proxies_lock, NULL);
+  self->orig_addr = 0;
+
+  // alloc memory for trampoline
+  if (0 == (self->trampo = sh_trampo_alloc(&sh_hub_trampo_mgr, 0, 0, 0))) {
+    free(self);
+    return NULL;
+  }
+
+  // fill in code
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    memcpy((void *)self->trampo, sh_hub_trampo_template_start(), code_size);
+  }
+  SH_SIG_CATCH() {
+    sh_trampo_free(&sh_hub_trampo_mgr, self->trampo);
+    free(self);
+    SH_LOG_WARN("hub: fill in code crashed");
+    return NULL;
+  }
+  SH_SIG_EXIT
+
+  // file in data
+  void **data = (void **)(self->trampo + code_size);
+  *data++ = (void *)sh_hub_push_stack;
+  *data = (void *)self;
+
+  // clear CPU cache
+  sh_util_clear_cache(self->trampo, code_size + data_size);
+
+#if defined(__arm__) && defined(__thumb__)
+  *trampo = self->trampo + 1;
+#else
+  *trampo = self->trampo;
+#endif
+
+  SH_LOG_INFO("hub: create trampo for target_addr %" PRIxPTR " at %" PRIxPTR ", size %zu + %zu = %zu",
+              target_addr, *trampo, code_size, data_size, code_size + data_size);
+  return self;
+}
+
+static void sh_hub_destroy_inner(sh_hub_t *self) {
+  pthread_mutex_destroy(&self->proxies_lock);
+
+  if (0 != self->trampo) sh_trampo_free(&sh_hub_trampo_mgr, self->trampo);
+
+  while (!SLIST_EMPTY(&self->proxies)) {
+    sh_hub_proxy_t *proxy = SLIST_FIRST(&self->proxies);
+    SLIST_REMOVE_HEAD(&self->proxies, link);
+    free(proxy);
+  }
+
+  free(self);
+}
+
+void sh_hub_destroy(sh_hub_t *self, bool with_delay) {
+  if (SHADOWHOOK_IS_SHARED_MODE) {
+    struct timeval now;
+    gettimeofday(&now, NULL);
+
+    if (!LIST_EMPTY(&sh_hub_delayed_destroy)) {
+      pthread_mutex_lock(&sh_hub_delayed_destroy_lock);
+      sh_hub_t *hub, *hub_tmp;
+      LIST_FOREACH_SAFE(hub, &sh_hub_delayed_destroy, link, hub_tmp)
+      if (now.tv_sec - hub->destroy_ts > SH_HUB_DELAY_SEC) {
+        LIST_REMOVE(hub, link);
+        sh_hub_destroy_inner(hub);
+      }
+      pthread_mutex_unlock(&sh_hub_delayed_destroy_lock);
+    }
+
+    if (with_delay) {
+      self->destroy_ts = now.tv_sec;
+      sh_trampo_free(&sh_hub_trampo_mgr, self->trampo);
+      self->trampo = 0;
+
+      pthread_mutex_lock(&sh_hub_delayed_destroy_lock);
+      LIST_INSERT_HEAD(&sh_hub_delayed_destroy, self, link);
+      pthread_mutex_unlock(&sh_hub_delayed_destroy_lock);
+    } else
+      sh_hub_destroy_inner(self);
+  } else
+    sh_hub_destroy_inner(self);
+}
+
+uintptr_t sh_hub_get_orig_addr(sh_hub_t *self) {
+  return self->orig_addr;
+}
+
+uintptr_t *sh_hub_get_orig_addr_addr(sh_hub_t *self) {
+  return &self->orig_addr;
+}
+
+int sh_hub_add_proxy(sh_hub_t *self, uintptr_t func) {
+  int r = SHADOWHOOK_ERRNO_OK;
+
+  pthread_mutex_lock(&self->proxies_lock);
+
+  // check repeated funcion
+  sh_hub_proxy_t *proxy;
+  SLIST_FOREACH(proxy, &self->proxies, link) {
+    if (proxy->enabled && proxy->func == (void *)func) {
+      r = SHADOWHOOK_ERRNO_HOOK_DUP;
+      goto end;
+    }
+  }
+
+  // try to re-enable an exists item
+  SLIST_FOREACH(proxy, &self->proxies, link) {
+    if (proxy->func == (void *)func) {
+      if (!proxy->enabled) __atomic_store_n((bool *)&proxy->enabled, true, __ATOMIC_SEQ_CST);
+
+      SH_LOG_INFO("hub: add(re-enable) func %" PRIxPTR, func);
+      goto end;
+    }
+  }
+
+  // create new item
+  if (NULL == (proxy = malloc(sizeof(sh_hub_proxy_t)))) {
+    r = SHADOWHOOK_ERRNO_OOM;
+    goto end;
+  }
+  proxy->func = (void *)func;
+  proxy->enabled = true;
+
+  // insert to the head of the proxy-list
+  // equivalent to: SLIST_INSERT_HEAD(&self->proxies, proxy, link);
+  // but: __ATOMIC_RELEASE ensures readers see only fully-constructed item
+  SLIST_NEXT(proxy, link) = SLIST_FIRST(&self->proxies);
+  __atomic_store_n((uintptr_t *)(&SLIST_FIRST(&self->proxies)), (uintptr_t)proxy, __ATOMIC_RELEASE);
+  SH_LOG_INFO("hub: add(new) func %" PRIxPTR, func);
+
+end:
+  pthread_mutex_unlock(&self->proxies_lock);
+  return r;
+}
+
+int sh_hub_del_proxy(sh_hub_t *self, uintptr_t func, bool *have_enabled_proxy) {
+  *have_enabled_proxy = false;
+
+  pthread_mutex_lock(&self->proxies_lock);
+
+  sh_hub_proxy_t *proxy;
+  bool deleted = false;
+  SLIST_FOREACH(proxy, &self->proxies, link) {
+    if (proxy->func == (void *)func) {
+      if (proxy->enabled) __atomic_store_n((bool *)&proxy->enabled, false, __ATOMIC_SEQ_CST);
+
+      deleted = true;
+      SH_LOG_INFO("hub: del func %" PRIxPTR, func);
+    }
+
+    if (proxy->enabled && !*have_enabled_proxy) *have_enabled_proxy = true;
+
+    if (deleted && *have_enabled_proxy) break;
+  }
+
+  pthread_mutex_unlock(&self->proxies_lock);
+
+  return deleted ? 0 : -1;
+}
+
+static sh_hub_frame_t *sh_hub_get_current_frame(void *return_address) {
+  sh_hub_stack_t *stack = (sh_hub_stack_t *)sh_safe_pthread_getspecific(sh_hub_stack_tls_key);
+  if (0 == stack->frames_cnt) return NULL;
+  sh_hub_frame_t *frame = &stack->frames[stack->frames_cnt - 1];
+  return frame->return_address == return_address ? frame : NULL;
+}
+
+void sh_hub_allow_reentrant(void *return_address) {
+  sh_hub_frame_t *frame = sh_hub_get_current_frame(return_address);
+  if (NULL != frame) {
+    frame->flags |= SH_HUB_FRAME_FLAG_ALLOW_REENTRANT;
+    SH_LOG_DEBUG("hub: allow reentrant frame %p", return_address);
+  }
+}
+
+void sh_hub_disallow_reentrant(void *return_address) {
+  sh_hub_frame_t *frame = sh_hub_get_current_frame(return_address);
+  if (NULL != frame) {
+    frame->flags &= ~SH_HUB_FRAME_FLAG_ALLOW_REENTRANT;
+    SH_LOG_DEBUG("hub: disallow reentrant frame %p", return_address);
+  }
+}
+
+void *sh_hub_get_prev_func(void *func) {
+  sh_hub_stack_t *stack = (sh_hub_stack_t *)sh_safe_pthread_getspecific(sh_hub_stack_tls_key);
+  if (0 == stack->frames_cnt) sh_safe_abort();  // called in a non-hook status?
+  sh_hub_frame_t *frame = &stack->frames[stack->frames_cnt - 1];
+
+  // find and return the next enabled hook-function in the hook-chain
+  bool found = false;
+  sh_hub_proxy_t *proxy;
+  SLIST_FOREACH(proxy, &(frame->proxies), link) {
+    if (!found) {
+      if (proxy->func == func) found = true;
+    } else {
+      if (proxy->enabled) break;
+    }
+  }
+  if (NULL != proxy) {
+    SH_LOG_DEBUG("hub: get_prev_func() return next enabled proxy %p", proxy->func);
+    return proxy->func;
+  }
+
+  SH_LOG_DEBUG("hub: get_prev_func() return orig_addr %p", (void *)frame->orig_addr);
+  // did not find, return the original-function
+  return (void *)frame->orig_addr;
+}
+
+void *sh_hub_get_return_address(void) {
+  sh_hub_stack_t *stack = (sh_hub_stack_t *)sh_safe_pthread_getspecific(sh_hub_stack_tls_key);
+  if (0 == stack->frames_cnt) sh_safe_abort();  // called in a non-hook status?
+  sh_hub_frame_t *frame = &stack->frames[stack->frames_cnt - 1];
+
+  return frame->return_address;
+}
diff --git a/app/src/main/cpp/shadowhook/sh_hub.h b/app/src/main/cpp/shadowhook/sh_hub.h
new file mode 100644
index 0000000..accbfb5
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_hub.h
@@ -0,0 +1,45 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+int sh_hub_init(void);
+
+typedef struct sh_hub sh_hub_t;
+
+sh_hub_t *sh_hub_create(uintptr_t target_addr, uintptr_t *trampo);
+void sh_hub_destroy(sh_hub_t *self, bool with_delay);
+
+uintptr_t sh_hub_get_orig_addr(sh_hub_t *self);
+uintptr_t *sh_hub_get_orig_addr_addr(sh_hub_t *self);
+
+int sh_hub_add_proxy(sh_hub_t *self, uintptr_t func);
+int sh_hub_del_proxy(sh_hub_t *self, uintptr_t func, bool *have_enabled_proxy);
+
+void *sh_hub_get_prev_func(void *func);
+void sh_hub_pop_stack(void *return_address);
+void sh_hub_allow_reentrant(void *return_address);
+void sh_hub_disallow_reentrant(void *return_address);
+void *sh_hub_get_return_address(void);
diff --git a/app/src/main/cpp/shadowhook/sh_jni.c b/app/src/main/cpp/shadowhook/sh_jni.c
new file mode 100644
index 0000000..051f6d9
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_jni.c
@@ -0,0 +1,139 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include <errno.h>
+#include <jni.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "sh_log.h"
+#include "shadowhook.h"
+
+#define SH_JNI_VERSION    JNI_VERSION_1_6
+#define SH_JNI_CLASS_NAME "com/bytedance/shadowhook/ShadowHook"
+
+static jstring sh_jni_get_version(JNIEnv *env, jobject thiz) {
+  (void)thiz;
+  return (*env)->NewStringUTF(env, shadowhook_get_version());
+}
+
+static jint sh_jni_init(JNIEnv *env, jobject thiz, jint mode, jboolean debuggable) {
+  (void)env, (void)thiz;
+
+  return shadowhook_init(0 == mode ? SHADOWHOOK_MODE_SHARED : SHADOWHOOK_MODE_UNIQUE, (bool)debuggable);
+}
+
+static jint sh_jni_get_init_errno(JNIEnv *env, jobject thiz) {
+  (void)env, (void)thiz;
+
+  return shadowhook_get_init_errno();
+}
+
+static jint sh_jni_get_mode(JNIEnv *env, jobject thiz) {
+  (void)env, (void)thiz;
+
+  return SHADOWHOOK_MODE_SHARED == shadowhook_get_mode() ? 0 : 1;
+}
+
+static jboolean sh_jni_get_debuggable(JNIEnv *env, jobject thiz) {
+  (void)env, (void)thiz;
+
+  return shadowhook_get_debuggable();
+}
+
+static void sh_jni_set_debuggable(JNIEnv *env, jobject thiz, jboolean debuggable) {
+  (void)env, (void)thiz;
+
+  shadowhook_set_debuggable((bool)debuggable);
+}
+
+static jboolean sh_jni_get_recordable(JNIEnv *env, jobject thiz) {
+  (void)env, (void)thiz;
+
+  return shadowhook_get_recordable();
+}
+
+static void sh_jni_set_recordable(JNIEnv *env, jobject thiz, jboolean recordable) {
+  (void)env, (void)thiz;
+
+  shadowhook_set_recordable((bool)recordable);
+}
+
+static jstring sh_jni_to_errmsg(JNIEnv *env, jobject thiz, jint error_number) {
+  (void)thiz;
+
+  return (*env)->NewStringUTF(env, shadowhook_to_errmsg(error_number));
+}
+
+static jstring sh_jni_get_records(JNIEnv *env, jobject thiz, jint item_flags) {
+  (void)thiz;
+
+  char *str = shadowhook_get_records((uint32_t)item_flags);
+  if (NULL == str) return NULL;
+
+  jstring jstr = (*env)->NewStringUTF(env, str);
+  free(str);
+  return jstr;
+}
+
+static jstring sh_jni_get_arch(JNIEnv *env, jobject thiz) {
+  (void)thiz;
+
+#if defined(__arm__)
+  char *arch = "arm";
+#elif defined(__aarch64__)
+  char *arch = "arm64";
+#else
+  char *arch = "unsupported";
+#endif
+
+  return (*env)->NewStringUTF(env, arch);
+}
+
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved) {
+  (void)reserved;
+
+  if (__predict_false(NULL == vm)) return JNI_ERR;
+
+  JNIEnv *env;
+  if (__predict_false(JNI_OK != (*vm)->GetEnv(vm, (void **)&env, SH_JNI_VERSION))) return JNI_ERR;
+  if (__predict_false(NULL == env || NULL == *env)) return JNI_ERR;
+
+  jclass cls;
+  if (__predict_false(NULL == (cls = (*env)->FindClass(env, SH_JNI_CLASS_NAME)))) return JNI_ERR;
+
+  JNINativeMethod m[] = {{"nativeGetVersion", "()Ljava/lang/String;", (void *)sh_jni_get_version},
+                         {"nativeInit", "(IZ)I", (void *)sh_jni_init},
+                         {"nativeGetInitErrno", "()I", (void *)sh_jni_get_init_errno},
+                         {"nativeGetMode", "()I", (void *)sh_jni_get_mode},
+                         {"nativeGetDebuggable", "()Z", (void *)sh_jni_get_debuggable},
+                         {"nativeSetDebuggable", "(Z)V", (void *)sh_jni_set_debuggable},
+                         {"nativeGetRecordable", "()Z", (void *)sh_jni_get_recordable},
+                         {"nativeSetRecordable", "(Z)V", (void *)sh_jni_set_recordable},
+                         {"nativeToErrmsg", "(I)Ljava/lang/String;", (void *)sh_jni_to_errmsg},
+                         {"nativeGetRecords", "(I)Ljava/lang/String;", (void *)sh_jni_get_records},
+                         {"nativeGetArch", "()Ljava/lang/String;", (void *)sh_jni_get_arch}};
+  if (__predict_false(0 != (*env)->RegisterNatives(env, cls, m, sizeof(m) / sizeof(m[0])))) return JNI_ERR;
+
+  return SH_JNI_VERSION;
+}
diff --git a/app/src/main/cpp/shadowhook/sh_linker.c b/app/src/main/cpp/shadowhook/sh_linker.c
new file mode 100644
index 0000000..f37471f
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_linker.c
@@ -0,0 +1,412 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_linker.h"
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "sh_log.h"
+#include "sh_recorder.h"
+#include "sh_sig.h"
+#include "sh_switch.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "xdl.h"
+
+#ifndef __LP64__
+#define SH_LINKER_BASENAME "linker"
+#else
+#define SH_LINKER_BASENAME "linker64"
+#endif
+
+#define SH_LINKER_SYM_G_DL_MUTEX        "__dl__ZL10g_dl_mutex"
+#define SH_LINKER_SYM_G_DL_MUTEX_U_QPR2 "__dl_g_dl_mutex"
+#define SH_LINKER_SYM_DO_DLOPEN_L       "__dl__Z9do_dlopenPKciPK17android_dlextinfo"
+#define SH_LINKER_SYM_DO_DLOPEN_N       "__dl__Z9do_dlopenPKciPK17android_dlextinfoPv"
+#define SH_LINKER_SYM_DO_DLOPEN_O       "__dl__Z9do_dlopenPKciPK17android_dlextinfoPKv"
+
+static bool sh_linker_dlopen_hooked = false;
+
+static sh_linker_post_dlopen_t sh_linker_post_dlopen;
+static void *sh_linker_post_dlopen_arg;
+
+static pthread_mutex_t *sh_linker_g_dl_mutex;
+static uintptr_t sh_linker_dlopen_addr;  // save address of dlopen(==4.x) or do_dlopen(>=5.0)
+static xdl_info_t sh_linker_dlopen_dlinfo;
+
+#if defined(__arm__) && __ANDROID_API__ < __ANDROID_API_L__
+static uintptr_t sh_linker_dlfcn[6];
+static const char *sh_linker_dlfcn_name[6] = {"dlopen", "dlerror", "dlsym",
+                                              "dladdr", "dlclose", "dl_unwind_find_exidx"};
+#endif
+
+__attribute__((constructor)) static void sh_linker_ctor(void) {
+  sh_linker_dlopen_addr = (uintptr_t)dlopen;
+#if defined(__arm__) && __ANDROID_API__ < __ANDROID_API_L__
+  sh_linker_dlfcn[0] = (uintptr_t)dlopen;
+  sh_linker_dlfcn[1] = (uintptr_t)dlerror;
+  sh_linker_dlfcn[2] = (uintptr_t)dlsym;
+  sh_linker_dlfcn[3] = (uintptr_t)dladdr;
+  sh_linker_dlfcn[4] = (uintptr_t)dlclose;
+  sh_linker_dlfcn[5] = (uintptr_t)dl_unwind_find_exidx;
+#endif
+}
+
+static void *sh_linker_get_base_addr(xdl_info_t *dlinfo) {
+  uintptr_t vaddr_min = UINTPTR_MAX;
+  for (size_t i = 0; i < dlinfo->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(dlinfo->dlpi_phdr[i]);
+    if (PT_LOAD == phdr->p_type && vaddr_min > phdr->p_vaddr) vaddr_min = phdr->p_vaddr;
+  }
+
+  if (UINTPTR_MAX == vaddr_min)
+    return dlinfo->dli_fbase;  // should not happen
+  else
+    return (void *)((uintptr_t)dlinfo->dli_fbase + SH_UTIL_PAGE_START(vaddr_min));
+}
+
+static bool sh_linker_check_arch(xdl_info_t *dlinfo) {
+  ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)sh_linker_get_base_addr(dlinfo);
+
+#if defined(__LP64__)
+#define SH_LINKER_ELF_CLASS   ELFCLASS64
+#define SH_LINKER_ELF_MACHINE EM_AARCH64
+#else
+#define SH_LINKER_ELF_CLASS   ELFCLASS32
+#define SH_LINKER_ELF_MACHINE EM_ARM
+#endif
+
+  if (0 != memcmp(ehdr->e_ident, ELFMAG, SELFMAG)) return false;
+  if (SH_LINKER_ELF_CLASS != ehdr->e_ident[EI_CLASS]) return false;
+  if (SH_LINKER_ELF_MACHINE != ehdr->e_machine) return false;
+
+  return true;
+}
+
+int sh_linker_init(void) {
+  memset(&sh_linker_dlopen_dlinfo, 0, sizeof(sh_linker_dlopen_dlinfo));
+
+  int api_level = sh_util_get_api_level();
+  if (__predict_true(api_level >= __ANDROID_API_L__)) {
+    sh_linker_dlopen_addr = 0;
+
+    void *handle = xdl_open(SH_LINKER_BASENAME, XDL_DEFAULT);
+    if (__predict_false(NULL == handle)) return -1;
+    xdl_info(handle, XDL_DI_DLINFO, (void *)&sh_linker_dlopen_dlinfo);
+    sh_linker_dlopen_dlinfo.dli_fname = SH_LINKER_BASENAME;
+
+    // get g_dl_mutex
+    sh_linker_g_dl_mutex = (pthread_mutex_t *)(xdl_dsym(handle, SH_LINKER_SYM_G_DL_MUTEX, NULL));
+    if (NULL == sh_linker_g_dl_mutex && api_level >= __ANDROID_API_U__)
+      sh_linker_g_dl_mutex = (pthread_mutex_t *)(xdl_dsym(handle, SH_LINKER_SYM_G_DL_MUTEX_U_QPR2, NULL));
+
+    // get do_dlopen
+    if (api_level >= __ANDROID_API_O__)
+      sh_linker_dlopen_dlinfo.dli_sname = SH_LINKER_SYM_DO_DLOPEN_O;
+    else if (api_level >= __ANDROID_API_N__)
+      sh_linker_dlopen_dlinfo.dli_sname = SH_LINKER_SYM_DO_DLOPEN_N;
+    else
+      sh_linker_dlopen_dlinfo.dli_sname = SH_LINKER_SYM_DO_DLOPEN_L;
+    sh_linker_dlopen_dlinfo.dli_saddr =
+        xdl_dsym(handle, sh_linker_dlopen_dlinfo.dli_sname, &(sh_linker_dlopen_dlinfo.dli_ssize));
+    sh_linker_dlopen_addr = (uintptr_t)sh_linker_dlopen_dlinfo.dli_saddr;
+
+    xdl_close(handle);
+  }
+
+  return (0 != sh_linker_dlopen_addr && (NULL != sh_linker_g_dl_mutex || api_level < __ANDROID_API_L__)) ? 0
+                                                                                                      : -1;
+}
+
+const char *sh_linker_match_dlfcn(uintptr_t target_addr) {
+#if defined(__arm__) && __ANDROID_API__ < __ANDROID_API_L__
+  if (sh_util_get_api_level() < __ANDROID_API_L__)
+    for (size_t i = 0; i < sizeof(sh_linker_dlfcn) / sizeof(sh_linker_dlfcn[0]); i++)
+      if (sh_linker_dlfcn[i] == target_addr) return sh_linker_dlfcn_name[i];
+#else
+  (void)target_addr;
+#endif
+
+  return NULL;
+}
+
+bool sh_linker_need_to_hook_dlopen(uintptr_t target_addr) {
+  return SHADOWHOOK_IS_UNIQUE_MODE && !sh_linker_dlopen_hooked && target_addr == sh_linker_dlopen_addr;
+}
+
+typedef void *(*sh_linker_proxy_dlopen_t)(const char *, int);
+static sh_linker_proxy_dlopen_t sh_linker_orig_dlopen;
+static void *sh_linker_proxy_dlopen(const char *filename, int flag) {
+  void *handle;
+  if (SHADOWHOOK_IS_SHARED_MODE)
+    handle = SHADOWHOOK_CALL_PREV(sh_linker_proxy_dlopen, sh_linker_proxy_dlopen_t, filename, flag);
+  else
+    handle = sh_linker_orig_dlopen(filename, flag);
+
+  if (NULL != handle) sh_linker_post_dlopen(sh_linker_post_dlopen_arg);
+
+  if (SHADOWHOOK_IS_SHARED_MODE) SHADOWHOOK_POP_STACK();
+  return handle;
+}
+
+typedef void *(*sh_linker_proxy_do_dlopen_l_t)(const char *, int, const void *);
+static sh_linker_proxy_do_dlopen_l_t sh_linker_orig_do_dlopen_l;
+static void *sh_linker_proxy_do_dlopen_l(const char *name, int flags, const void *extinfo) {
+  void *handle;
+  if (SHADOWHOOK_IS_SHARED_MODE)
+    handle = SHADOWHOOK_CALL_PREV(sh_linker_proxy_do_dlopen_l, sh_linker_proxy_do_dlopen_l_t, name, flags,
+                                  extinfo);
+  else
+    handle = sh_linker_orig_do_dlopen_l(name, flags, extinfo);
+
+  if (NULL != handle) sh_linker_post_dlopen(sh_linker_post_dlopen_arg);
+
+  if (SHADOWHOOK_IS_SHARED_MODE) SHADOWHOOK_POP_STACK();
+  return handle;
+}
+
+typedef void *(*sh_linker_proxy_do_dlopen_n_t)(const char *, int, const void *, void *);
+static sh_linker_proxy_do_dlopen_n_t sh_linker_orig_do_dlopen_n;
+static void *sh_linker_proxy_do_dlopen_n(const char *name, int flags, const void *extinfo,
+                                         void *caller_addr) {
+  void *handle;
+  if (SHADOWHOOK_IS_SHARED_MODE)
+    handle = SHADOWHOOK_CALL_PREV(sh_linker_proxy_do_dlopen_n, sh_linker_proxy_do_dlopen_n_t, name, flags,
+                                  extinfo, caller_addr);
+  else
+    handle = sh_linker_orig_do_dlopen_n(name, flags, extinfo, caller_addr);
+
+  if (NULL != handle) sh_linker_post_dlopen(sh_linker_post_dlopen_arg);
+
+  if (SHADOWHOOK_IS_SHARED_MODE) SHADOWHOOK_POP_STACK();
+  return handle;
+}
+
+int sh_linker_hook_dlopen(sh_linker_post_dlopen_t post_dlopen, void *post_dlopen_arg) {
+  static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+  static int result = SHADOWHOOK_ERRNO_MONITOR_DLOPEN;
+
+  if (sh_linker_dlopen_hooked) return result;
+  pthread_mutex_lock(&lock);
+  if (sh_linker_dlopen_hooked) goto end;
+
+  // try hooking-dlopen only once
+  sh_linker_dlopen_hooked = true;
+
+  // do init for SHARED mode
+  if (SHADOWHOOK_IS_SHARED_MODE)
+    if (0 != sh_linker_init()) goto end;
+
+  // save post callback ptr before hooking
+  sh_linker_post_dlopen = post_dlopen;
+  sh_linker_post_dlopen_arg = post_dlopen_arg;
+
+  // hook for dlopen() or do_dlopen()
+  int (*hook)(uintptr_t, uintptr_t, uintptr_t *, size_t *, xdl_info_t *) =
+      SHADOWHOOK_IS_SHARED_MODE ? sh_switch_hook : sh_switch_hook_invisible;
+  int api_level = sh_util_get_api_level();
+  size_t backup_len = 0;
+  int r;
+  if (api_level < __ANDROID_API_L__) {
+    // get & check dlinfo
+    r = sh_linker_get_dlinfo_by_addr((void *)sh_linker_dlopen_addr, &sh_linker_dlopen_dlinfo, NULL, 0, NULL,
+                                     0, false);
+    if (SHADOWHOOK_ERRNO_LINKER_ARCH_MISMATCH == r) result = SHADOWHOOK_ERRNO_LINKER_ARCH_MISMATCH;
+    if (0 != r) goto end;
+
+    // hook
+    r = hook(sh_linker_dlopen_addr, (uintptr_t)sh_linker_proxy_dlopen, (uintptr_t *)&sh_linker_orig_dlopen,
+             &backup_len, &sh_linker_dlopen_dlinfo);
+
+    // record
+    sh_recorder_add_hook(r, true, sh_linker_dlopen_addr, SH_LINKER_BASENAME, "dlopen",
+                         (uintptr_t)sh_linker_proxy_dlopen, backup_len, UINTPTR_MAX,
+                         (uintptr_t)(__builtin_return_address(0)));
+
+    if (0 != r) goto end;
+  } else {
+    // check dlinfo
+    if (!sh_linker_check_arch(&sh_linker_dlopen_dlinfo)) {
+      result = SHADOWHOOK_ERRNO_LINKER_ARCH_MISMATCH;
+      goto end;
+    }
+
+    uintptr_t proxy;
+    uintptr_t *orig;
+    if (api_level >= __ANDROID_API_N__) {
+      proxy = (uintptr_t)sh_linker_proxy_do_dlopen_n;
+      orig = (uintptr_t *)&sh_linker_orig_do_dlopen_n;
+    } else {
+      proxy = (uintptr_t)sh_linker_proxy_do_dlopen_l;
+      orig = (uintptr_t *)&sh_linker_orig_do_dlopen_l;
+    }
+
+    // hook
+    pthread_mutex_lock(sh_linker_g_dl_mutex);
+    r = hook(sh_linker_dlopen_addr, proxy, orig, &backup_len, &sh_linker_dlopen_dlinfo);
+    pthread_mutex_unlock(sh_linker_g_dl_mutex);
+
+    // record
+    sh_recorder_add_hook(r, true, sh_linker_dlopen_addr, SH_LINKER_BASENAME,
+                         sh_linker_dlopen_dlinfo.dli_sname, proxy, backup_len, UINTPTR_MAX,
+                         (uintptr_t)(__builtin_return_address(0)));
+
+    if (0 != r) goto end;
+  }
+
+  // OK
+  result = 0;
+
+end:
+  pthread_mutex_unlock(&lock);
+  SH_LOG_INFO("linker: hook dlopen %s, return: %d", 0 == result ? "OK" : "FAILED", result);
+  return result;
+}
+
+int sh_linker_get_dlinfo_by_addr(void *addr, xdl_info_t *dlinfo, char *lib_name, size_t lib_name_sz,
+                                 char *sym_name, size_t sym_name_sz, bool ignore_symbol_check) {
+  // dladdr()
+  bool crashed = false;
+  void *dlcache = NULL;
+  int r = 0;
+  if (sh_util_get_api_level() >= __ANDROID_API_L__) {
+    r = xdl_addr((void *)addr, dlinfo, &dlcache);
+  } else {
+    SH_SIG_TRY(SIGSEGV, SIGBUS) {
+      r = xdl_addr((void *)addr, dlinfo, &dlcache);
+    }
+    SH_SIG_CATCH() {
+      crashed = true;
+    }
+    SH_SIG_EXIT
+  }
+  SH_LOG_INFO("task: get dlinfo by target addr: target_addr %p, sym_name %s, sym_sz %zu, load_bias %" PRIxPTR
+              ", pathname %s",
+              addr, NULL == dlinfo->dli_sname ? "(NULL)" : dlinfo->dli_sname, dlinfo->dli_ssize,
+              (uintptr_t)dlinfo->dli_fbase, NULL == dlinfo->dli_fname ? "(NULL)" : dlinfo->dli_fname);
+
+  // check error
+  if (crashed) {
+    r = SHADOWHOOK_ERRNO_HOOK_DLADDR_CRASH;
+    goto end;
+  }
+  if (0 == r || NULL == dlinfo->dli_fname) {
+    r = SHADOWHOOK_ERRNO_HOOK_DLINFO;
+    goto end;
+  }
+  if (!sh_linker_check_arch(dlinfo)) {
+    r = SHADOWHOOK_ERRNO_ELF_ARCH_MISMATCH;
+    goto end;
+  }
+
+  if (NULL == dlinfo->dli_sname) {
+    if (ignore_symbol_check) {
+      dlinfo->dli_saddr = addr;
+      dlinfo->dli_sname = "unknown";
+      dlinfo->dli_ssize = 1024;  // big enough
+    } else {
+      const char *matched_dlfcn_name = NULL;
+      if (NULL == (matched_dlfcn_name = sh_linker_match_dlfcn((uintptr_t)addr))) {
+        r = SHADOWHOOK_ERRNO_HOOK_DLINFO;
+        goto end;
+      } else {
+        dlinfo->dli_saddr = addr;
+        dlinfo->dli_sname = matched_dlfcn_name;
+        dlinfo->dli_ssize = 4;  // safe length, only relative jumps are allowed
+        SH_LOG_INFO("task: match dlfcn, target_addr %p, sym_name %s", addr, matched_dlfcn_name);
+      }
+    }
+  }
+  if (0 == dlinfo->dli_ssize) {
+    r = SHADOWHOOK_ERRNO_HOOK_SYMSZ;
+    goto end;
+  }
+
+  if (NULL != lib_name) strlcpy(lib_name, dlinfo->dli_fname, lib_name_sz);
+  if (NULL != sym_name) strlcpy(sym_name, dlinfo->dli_sname, sym_name_sz);
+  r = 0;
+
+end:
+  xdl_addr_clean(&dlcache);
+  return r;
+}
+
+int sh_linker_get_dlinfo_by_sym_name(const char *lib_name, const char *sym_name, xdl_info_t *dlinfo,
+                                     char *real_lib_name, size_t real_lib_name_sz) {
+  // open library
+  bool crashed = false;
+  void *handle = NULL;
+  if (sh_util_get_api_level() >= __ANDROID_API_L__) {
+    handle = xdl_open(lib_name, XDL_DEFAULT);
+  } else {
+    SH_SIG_TRY(SIGSEGV, SIGBUS) {
+      handle = xdl_open(lib_name, XDL_DEFAULT);
+    }
+    SH_SIG_CATCH() {
+      crashed = true;
+    }
+    SH_SIG_EXIT
+  }
+  if (crashed) return SHADOWHOOK_ERRNO_HOOK_DLOPEN_CRASH;
+  if (NULL == handle) return SHADOWHOOK_ERRNO_PENDING;
+
+  // get dlinfo
+  xdl_info(handle, XDL_DI_DLINFO, (void *)dlinfo);
+
+  // check error
+  if (!sh_linker_check_arch(dlinfo)) {
+    xdl_close(handle);
+    return SHADOWHOOK_ERRNO_ELF_ARCH_MISMATCH;
+  }
+
+  // lookup symbol address
+  crashed = false;
+  void *addr = NULL;
+  size_t sym_size = 0;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    // do xdl_sym() or xdl_dsym() in an dlclosed-ELF will cause a crash
+    addr = xdl_sym(handle, sym_name, &sym_size);
+    if (NULL == addr) addr = xdl_dsym(handle, sym_name, &sym_size);
+  }
+  SH_SIG_CATCH() {
+    crashed = true;
+  }
+  SH_SIG_EXIT
+
+  // close library
+  xdl_close(handle);
+
+  if (crashed) return SHADOWHOOK_ERRNO_HOOK_DLSYM_CRASH;
+  if (NULL == addr) return SHADOWHOOK_ERRNO_HOOK_DLSYM;
+
+  dlinfo->dli_fname = lib_name;
+  dlinfo->dli_sname = sym_name;
+  dlinfo->dli_saddr = addr;
+  dlinfo->dli_ssize = sym_size;
+  if (NULL != real_lib_name) strlcpy(real_lib_name, dlinfo->dli_fname, real_lib_name_sz);
+  return 0;
+}
diff --git a/app/src/main/cpp/shadowhook/sh_linker.h b/app/src/main/cpp/shadowhook/sh_linker.h
new file mode 100644
index 0000000..749e0a6
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_linker.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "xdl.h"
+
+int sh_linker_init(void);
+
+const char *sh_linker_match_dlfcn(uintptr_t target_addr);
+bool sh_linker_need_to_hook_dlopen(uintptr_t target_addr);
+
+typedef void (*sh_linker_post_dlopen_t)(void *arg);
+int sh_linker_hook_dlopen(sh_linker_post_dlopen_t post_dlopen, void *post_dlopen_arg);
+
+int sh_linker_get_dlinfo_by_addr(void *addr, xdl_info_t *dlinfo, char *lib_name, size_t lib_name_sz,
+                                 char *sym_name, size_t sym_name_sz, bool ignore_symbol_check);
+int sh_linker_get_dlinfo_by_sym_name(const char *lib_name, const char *sym_name, xdl_info_t *dlinfo,
+                                     char *real_lib_name, size_t real_lib_name_sz);
diff --git a/app/src/main/cpp/shadowhook/sh_recorder.c b/app/src/main/cpp/shadowhook/sh_recorder.c
new file mode 100644
index 0000000..22cf39d
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_recorder.c
@@ -0,0 +1,517 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_recorder.h"
+
+#include "sh_config.h"
+
+#ifdef SH_CONFIG_OPERATION_RECORDS
+
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+
+#include "sh_sig.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "xdl.h"
+
+#define SH_RECORDER_OP_HOOK_SYM_ADDR 0
+#define SH_RECORDER_OP_HOOK_SYM_NAME 1
+#define SH_RECORDER_OP_UNHOOK        2
+
+#define SH_RECORDER_LIB_NAME_MAX 512
+#define SH_RECORDER_SYM_NAME_MAX 1024
+
+#define SH_RECORDER_STRINGS_BUF_EXPAND_STEP (1024 * 16)
+#define SH_RECORDER_STRINGS_BUF_MAX         (1024 * 128)
+#define SH_RECORDER_RECORDS_BUF_EXPAND_STEP (1024 * 32)
+#define SH_RECORDER_RECORDS_BUF_MAX         (1024 * 384)
+#define SH_RECORDER_OUTPUT_BUF_EXPAND_STEP  (1024 * 128)
+#define SH_RECORDER_OUTPUT_BUF_MAX          (1024 * 1024)
+
+static bool sh_recorder_recordable = false;
+
+bool sh_recorder_get_recordable(void) {
+  return sh_recorder_recordable;
+}
+
+void sh_recorder_set_recordable(bool recordable) {
+  sh_recorder_recordable = recordable;
+}
+
+typedef struct {
+  void *ptr;
+  size_t cap;
+  size_t sz;
+  pthread_mutex_t lock;
+} sh_recorder_buf_t;
+
+static int sh_recorder_buf_append(sh_recorder_buf_t *buf, size_t step, size_t max, const void *header,
+                                  size_t header_sz, const void *body, size_t body_sz) {
+  size_t needs = (header_sz + (NULL != body ? body_sz : 0));
+  if (needs > step) return -1;
+
+  if (buf->cap - buf->sz < needs) {
+    size_t new_cap = buf->cap + step;
+    if (new_cap > max) return -1;
+    void *new_ptr = realloc(buf->ptr, new_cap);
+    if (NULL == new_ptr) return -1;
+    buf->ptr = new_ptr;
+    buf->cap = new_cap;
+  }
+
+  memcpy((void *)((uintptr_t)buf->ptr + buf->sz), header, header_sz);
+  if (NULL != body) memcpy((void *)((uintptr_t)buf->ptr + buf->sz + header_sz), body, body_sz);
+  buf->sz += needs;
+  return 0;
+}
+
+static void sh_recorder_buf_free(sh_recorder_buf_t *buf) {
+  if (NULL != buf->ptr) {
+    free(buf->ptr);
+    buf->ptr = NULL;
+  }
+}
+
+static sh_recorder_buf_t sh_recorder_strings = {NULL, 0, 0, PTHREAD_MUTEX_INITIALIZER};
+static sh_recorder_buf_t sh_recorder_records = {NULL, 0, 0, PTHREAD_MUTEX_INITIALIZER};
+static bool sh_recorder_error = false;
+
+typedef struct {
+  uint16_t str_len;  // body length, in order to speed up the search
+} __attribute__((packed)) sh_recorder_str_header_t;
+// +body: string, including the terminating null byte ('\0')
+
+typedef struct {
+  uint64_t op : 8;
+  uint64_t error_number : 8;
+  uint64_t ts_ms : 48;
+  uintptr_t stub;
+  uint16_t caller_lib_name_idx;
+  uint8_t backup_len;
+  uint16_t lib_name_idx;
+  uint16_t sym_name_idx;
+  uintptr_t sym_addr;
+  uintptr_t new_addr;
+} __attribute__((packed)) sh_recorder_record_hook_header_t;
+// no body
+
+typedef struct {
+  uint64_t op : 8;
+  uint64_t error_number : 8;
+  uint64_t ts_ms : 48;
+  uintptr_t stub;
+  uint16_t caller_lib_name_idx;
+} __attribute__((packed)) sh_recorder_record_unhook_header_t;
+// no body
+
+static int sh_recorder_add_str(const char *str, size_t str_len, uint16_t *str_idx) {
+  uint16_t idx = 0;
+  bool ok = false;
+
+  pthread_mutex_lock(&sh_recorder_strings.lock);
+
+  // find in existing strings
+  size_t i = 0;
+  while (i < sh_recorder_strings.sz) {
+    sh_recorder_str_header_t *header = (sh_recorder_str_header_t *)((uintptr_t)sh_recorder_strings.ptr + i);
+    if (header->str_len == str_len) {
+      void *tmp = (void *)((uintptr_t)sh_recorder_strings.ptr + i + sizeof(header->str_len));
+      if (0 == memcmp(tmp, str, str_len)) {
+        *str_idx = idx;
+        ok = true;
+        break;  // OK
+      }
+    }
+    i += (sizeof(sh_recorder_str_header_t) + header->str_len + 1);
+    idx++;
+    if (idx == UINT16_MAX) break;  // failed
+  }
+
+  // insert a new string
+  if (!ok && idx < UINT16_MAX) {
+    // append new string
+    sh_recorder_str_header_t header = {(uint16_t)str_len};
+    if (0 == sh_recorder_buf_append(&sh_recorder_strings, SH_RECORDER_STRINGS_BUF_EXPAND_STEP,
+                                    SH_RECORDER_STRINGS_BUF_MAX, &header, sizeof(header), str, str_len + 1)) {
+      *str_idx = idx;
+      ok = true;  // OK
+    }
+  }
+
+  pthread_mutex_unlock(&sh_recorder_strings.lock);
+
+  return ok ? 0 : -1;
+}
+
+static char *sh_recorder_find_str(uint16_t idx) {
+  uint16_t cur_idx = 0;
+
+  size_t i = 0;
+  while (i < sh_recorder_strings.sz && cur_idx < idx) {
+    sh_recorder_str_header_t *header = (sh_recorder_str_header_t *)((uintptr_t)sh_recorder_strings.ptr + i);
+    i += (sizeof(sh_recorder_str_header_t) + header->str_len + 1);
+    cur_idx++;
+  }
+  if (cur_idx != idx) return "error";
+
+  sh_recorder_str_header_t *header = (sh_recorder_str_header_t *)((uintptr_t)sh_recorder_strings.ptr + i);
+  return (char *)((uintptr_t)header + sizeof(sh_recorder_str_header_t));
+}
+
+static long sh_recorder_tz = LONG_MAX;
+
+static uint64_t sh_recorder_get_timestamp_ms(void) {
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+
+  if (LONG_MAX == sh_recorder_tz) {
+    // localtime_r() will call getenv() without lock protection,
+    // and will crash when encountering concurrent setenv() calls.
+    // We really encountered.
+    sh_recorder_tz = 0;
+    //    struct tm tm;
+    //    if (NULL != localtime_r((time_t *)(&(tv.tv_sec)), &tm)) sh_recorder_tz = tm.tm_gmtoff;
+  }
+
+  return (uint64_t)tv.tv_sec * 1000 + (uint64_t)tv.tv_usec / 1000;
+}
+
+static size_t sh_recorder_format_timestamp_ms(uint64_t ts_ms, char *buf, size_t buf_len) {
+  time_t sec = (time_t)(ts_ms / 1000);
+  time_t msec = (time_t)(ts_ms % 1000);
+
+  struct tm tm;
+  sh_util_localtime_r(&sec, sh_recorder_tz, &tm);
+
+  return sh_util_snprintf(buf, buf_len, "%04d-%02d-%02dT%02d:%02d:%02d.%03ld%c%02ld:%02ld,",
+                          tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec,
+                          msec, sh_recorder_tz < 0 ? '-' : '+', labs(sh_recorder_tz / 3600),
+                          labs(sh_recorder_tz % 3600));
+}
+
+static const char *sh_recorder_get_base_name(const char *lib_name) {
+  const char *p = strrchr(lib_name, '/');
+  if (NULL != p && '\0' != *(p + 1))
+    return p + 1;
+  else
+    return lib_name;
+}
+
+static int sh_recorder_get_base_name_by_addr_iterator(struct dl_phdr_info *info, size_t size, void *arg) {
+  (void)size;
+
+  uintptr_t *pkg = (uintptr_t *)arg;
+  uintptr_t addr = *pkg++;
+  char *base_name = (char *)*pkg++;
+  size_t base_name_sz = (size_t)*pkg;
+
+  for (size_t i = 0; i < info->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(info->dlpi_phdr[i]);
+    if (PT_LOAD != phdr->p_type) continue;
+    if (addr < (uintptr_t)(info->dlpi_addr + phdr->p_vaddr) ||
+        addr >= (uintptr_t)(info->dlpi_addr + phdr->p_vaddr + phdr->p_memsz))
+      continue;
+
+    // get lib_name from path_name
+    const char *p;
+    if (NULL == info->dlpi_name || '\0' == info->dlpi_name[0])
+      p = "unknown";
+    else {
+      p = strrchr(info->dlpi_name, '/');
+      if (NULL == p || '\0' == *(p + 1))
+        p = info->dlpi_name;
+      else
+        p++;
+    }
+
+    strlcpy(base_name, p, base_name_sz);
+    return 1;  // OK
+  }
+
+  return 0;  // continue
+}
+
+static void sh_recorder_get_base_name_by_addr(uintptr_t addr, char *base_name, size_t base_name_sz) {
+  base_name[0] = '\0';
+  uintptr_t pkg[3] = {addr, (uintptr_t)base_name, (uintptr_t)base_name_sz};
+
+  if (sh_util_get_api_level() >= __ANDROID_API_L__) {
+    xdl_iterate_phdr(sh_recorder_get_base_name_by_addr_iterator, pkg, XDL_DEFAULT);
+  } else {
+    SH_SIG_TRY(SIGSEGV, SIGBUS) {
+      xdl_iterate_phdr(sh_recorder_get_base_name_by_addr_iterator, pkg, XDL_DEFAULT);
+    }
+    SH_SIG_EXIT
+  }
+
+  if ('\0' == base_name[0]) strlcpy(base_name, "unknown", base_name_sz);
+}
+
+int sh_recorder_add_hook(int error_number, bool is_hook_sym_addr, uintptr_t sym_addr, const char *lib_name,
+                         const char *sym_name, uintptr_t new_addr, size_t backup_len, uintptr_t stub,
+                         uintptr_t caller_addr) {
+  if (!sh_recorder_recordable) return 0;
+  if (sh_recorder_error) return -1;
+
+  // lib_name
+  if (NULL == lib_name) return -1;
+  lib_name = sh_recorder_get_base_name(lib_name);
+  size_t lib_name_len = strlen(lib_name);
+  if (0 == lib_name_len || lib_name_len > SH_RECORDER_LIB_NAME_MAX) return -1;
+
+  // sym_name
+  if (NULL == sym_name) return -1;
+  size_t sym_name_len = strlen(sym_name);
+  if (0 == sym_name_len || sym_name_len > SH_RECORDER_SYM_NAME_MAX) return -1;
+
+  // caller_lib_name
+  char caller_lib_name[SH_RECORDER_LIB_NAME_MAX];
+  sh_recorder_get_base_name_by_addr(caller_addr, caller_lib_name, sizeof(caller_lib_name));
+  size_t caller_lib_name_len = strlen(caller_lib_name);
+
+  // add strings to strings-pool
+  uint16_t lib_name_idx, sym_name_idx, caller_lib_name_idx;
+  if (0 != sh_recorder_add_str(lib_name, lib_name_len, &lib_name_idx)) goto err;
+  if (0 != sh_recorder_add_str(sym_name, sym_name_len, &sym_name_idx)) goto err;
+  if (0 != sh_recorder_add_str(caller_lib_name, caller_lib_name_len, &caller_lib_name_idx)) goto err;
+
+  // append new hook record
+  sh_recorder_record_hook_header_t header = {
+      is_hook_sym_addr ? SH_RECORDER_OP_HOOK_SYM_ADDR : SH_RECORDER_OP_HOOK_SYM_NAME,
+      (uint8_t)error_number,
+      sh_recorder_get_timestamp_ms(),
+      stub,
+      caller_lib_name_idx,
+      (uint8_t)backup_len,
+      lib_name_idx,
+      sym_name_idx,
+      sym_addr,
+      new_addr};
+  pthread_mutex_lock(&sh_recorder_records.lock);
+  int r = sh_recorder_buf_append(&sh_recorder_records, SH_RECORDER_RECORDS_BUF_EXPAND_STEP,
+                                 SH_RECORDER_RECORDS_BUF_MAX, &header, sizeof(header), NULL, 0);
+  pthread_mutex_unlock(&sh_recorder_records.lock);
+  if (0 != r) goto err;
+
+  return 0;
+
+err:
+  sh_recorder_error = true;
+  return -1;
+}
+
+int sh_recorder_add_unhook(int error_number, uintptr_t stub, uintptr_t caller_addr) {
+  if (!sh_recorder_recordable) return 0;
+  if (sh_recorder_error) return -1;
+
+  char caller_lib_name[SH_RECORDER_LIB_NAME_MAX];
+  sh_recorder_get_base_name_by_addr(caller_addr, caller_lib_name, sizeof(caller_lib_name));
+  size_t caller_lib_name_len = strlen(caller_lib_name);
+
+  uint16_t caller_lib_name_idx;
+  if (0 != sh_recorder_add_str(caller_lib_name, caller_lib_name_len, &caller_lib_name_idx)) goto err;
+
+  sh_recorder_record_unhook_header_t header = {SH_RECORDER_OP_UNHOOK, (uint8_t)error_number,
+                                               sh_recorder_get_timestamp_ms(), stub, caller_lib_name_idx};
+  pthread_mutex_lock(&sh_recorder_records.lock);
+  int r = sh_recorder_buf_append(&sh_recorder_records, SH_RECORDER_RECORDS_BUF_EXPAND_STEP,
+                                 SH_RECORDER_RECORDS_BUF_MAX, &header, sizeof(header), NULL, 0);
+  pthread_mutex_unlock(&sh_recorder_records.lock);
+  if (0 != r) goto err;
+
+  return 0;
+
+err:
+  sh_recorder_error = true;
+  return -1;
+}
+
+static const char *sh_recorder_get_op_name(uint8_t op) {
+  switch (op) {
+    case SH_RECORDER_OP_HOOK_SYM_ADDR:
+      return "hook_sym_addr";
+    case SH_RECORDER_OP_HOOK_SYM_NAME:
+      return "hook_sym_name";
+    case SH_RECORDER_OP_UNHOOK:
+      return "unhook";
+    default:
+      return "error";
+  }
+}
+
+static void sh_recorder_output(char **str, int fd, uint32_t item_flags) {
+  if (NULL == sh_recorder_records.ptr || 0 == sh_recorder_records.sz) return;
+
+  sh_recorder_buf_t output = {NULL, 0, 0, PTHREAD_MUTEX_INITIALIZER};
+
+  pthread_mutex_lock(&sh_recorder_records.lock);
+  pthread_mutex_lock(&sh_recorder_strings.lock);
+
+  char line[SH_RECORDER_LIB_NAME_MAX * 2 + SH_RECORDER_SYM_NAME_MAX + 256];
+  size_t line_sz;
+  size_t i = 0;
+  while (i < sh_recorder_records.sz) {
+    line_sz = 0;
+    sh_recorder_record_hook_header_t *header =
+        (sh_recorder_record_hook_header_t *)((uintptr_t)sh_recorder_records.ptr + i);
+
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_TIMESTAMP)
+      line_sz += sh_recorder_format_timestamp_ms(header->ts_ms, line + line_sz, sizeof(line) - line_sz);
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_CALLER_LIB_NAME)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%s,",
+                                  sh_recorder_find_str(header->caller_lib_name_idx));
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_OP)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%s,",
+                                  sh_recorder_get_op_name(header->op));
+    if ((item_flags & SHADOWHOOK_RECORD_ITEM_LIB_NAME) && header->op != SH_RECORDER_OP_UNHOOK)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%s,",
+                                  sh_recorder_find_str(header->lib_name_idx));
+    if ((item_flags & SHADOWHOOK_RECORD_ITEM_SYM_NAME) && header->op != SH_RECORDER_OP_UNHOOK)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%s,",
+                                  sh_recorder_find_str(header->sym_name_idx));
+    if ((item_flags & SHADOWHOOK_RECORD_ITEM_SYM_ADDR) && header->op != SH_RECORDER_OP_UNHOOK)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%" PRIxPTR ",", header->sym_addr);
+    if ((item_flags & SHADOWHOOK_RECORD_ITEM_NEW_ADDR) && header->op != SH_RECORDER_OP_UNHOOK)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%" PRIxPTR ",", header->new_addr);
+    if ((item_flags & SHADOWHOOK_RECORD_ITEM_BACKUP_LEN) && header->op != SH_RECORDER_OP_UNHOOK)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%" PRIu8 ",", header->backup_len);
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_ERRNO)
+      line_sz +=
+          sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%" PRIu8 ",", header->error_number);
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_STUB)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "%" PRIxPTR ",", header->stub);
+    line[line_sz - 1] = '\n';
+
+    if (NULL != str) {
+      // append to string
+      if (0 != sh_recorder_buf_append(&output, SH_RECORDER_OUTPUT_BUF_EXPAND_STEP, SH_RECORDER_OUTPUT_BUF_MAX,
+                                      line, line_sz, NULL, 0)) {
+        sh_recorder_buf_free(&output);
+        break;  // failed
+      }
+    } else {
+      // write to FD
+      if (0 != sh_util_write(fd, line, line_sz)) break;  // failed
+    }
+
+    i += (SH_RECORDER_OP_UNHOOK == header->op ? sizeof(sh_recorder_record_unhook_header_t)
+                                              : sizeof(sh_recorder_record_hook_header_t));
+  }
+
+  pthread_mutex_unlock(&sh_recorder_strings.lock);
+  pthread_mutex_unlock(&sh_recorder_records.lock);
+
+  // error message
+  if (sh_recorder_error) {
+    line_sz = 0;
+
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_TIMESTAMP)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "9999-99-99T00:00:00.000+00:00,");
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_CALLER_LIB_NAME)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "error,");
+    if (item_flags & SHADOWHOOK_RECORD_ITEM_OP)
+      line_sz += sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "error,");
+
+    if (0 == line_sz) line_sz = sh_util_snprintf(line + line_sz, sizeof(line) - line_sz, "error,");
+
+    line[line_sz - 1] = '\n';
+
+    if (NULL != str) {
+      // append to string
+      if (0 != sh_recorder_buf_append(&output, SH_RECORDER_OUTPUT_BUF_EXPAND_STEP, SH_RECORDER_OUTPUT_BUF_MAX,
+                                      line, line_sz, NULL, 0)) {
+        sh_recorder_buf_free(&output);
+        return;  // failed
+      }
+    } else {
+      // write to FD
+      if (0 != sh_util_write(fd, line, line_sz)) return;  // failed
+    }
+  }
+
+  // return string
+  if (NULL != str) {
+    if (0 != sh_recorder_buf_append(&output, SH_RECORDER_OUTPUT_BUF_EXPAND_STEP, SH_RECORDER_OUTPUT_BUF_MAX,
+                                    "", 1, NULL, 0)) {
+      sh_recorder_buf_free(&output);
+      return;  // failed
+    }
+    *str = output.ptr;
+  }
+}
+
+char *sh_recorder_get(uint32_t item_flags) {
+  if (!sh_recorder_recordable) return NULL;
+  if (0 == (item_flags & SHADOWHOOK_RECORD_ITEM_ALL)) return NULL;
+
+  char *str = NULL;
+  sh_recorder_output(&str, -1, item_flags);
+  return str;
+}
+
+void sh_recorder_dump(int fd, uint32_t item_flags) {
+  if (!sh_recorder_recordable) return;
+  if (0 == (item_flags & SHADOWHOOK_RECORD_ITEM_ALL)) return;
+  if (fd < 0) return;
+  sh_recorder_output(NULL, fd, item_flags);
+}
+
+#else
+
+bool sh_recorder_get_recordable(void) {
+  return false;
+}
+
+void sh_recorder_set_recordable(bool recordable) {
+  (void)recordable;
+}
+
+int sh_recorder_add_hook(int error_number, bool is_hook_sym_addr, uintptr_t sym_addr, const char *lib_name,
+                         const char *sym_name, uintptr_t new_addr, size_t backup_len, uintptr_t stub,
+                         uintptr_t caller_addr) {
+  (void)error_number, (void)is_hook_sym_addr, (void)sym_addr, (void)lib_name, (void)sym_name, (void)new_addr,
+      (void)backup_len, (void)stub, (void)caller_addr;
+  return 0;
+}
+
+int sh_recorder_add_unhook(int error_number, uintptr_t stub, uintptr_t caller_addr) {
+  (void)error_number, (void)stub, (void)caller_addr;
+  return 0;
+}
+
+char *sh_recorder_get(uint32_t item_flags) {
+  (void)item_flags;
+  return NULL;
+}
+
+void sh_recorder_dump(int fd, uint32_t item_flags) {
+  (void)fd, (void)item_flags;
+}
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/sh_recorder.h b/app/src/main/cpp/shadowhook/sh_recorder.h
new file mode 100644
index 0000000..91ce843
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_recorder.h
@@ -0,0 +1,37 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+bool sh_recorder_get_recordable(void);
+void sh_recorder_set_recordable(bool recordable);
+
+int sh_recorder_add_hook(int error_number, bool is_hook_sym_addr, uintptr_t sym_addr, const char *lib_name,
+                         const char *sym_name, uintptr_t new_addr, size_t backup_len, uintptr_t stub,
+                         uintptr_t caller_addr);
+int sh_recorder_add_unhook(int error_number, uintptr_t stub, uintptr_t caller_addr);
+
+char *sh_recorder_get(uint32_t item_flags);
+void sh_recorder_dump(int fd, uint32_t item_flags);
diff --git a/app/src/main/cpp/shadowhook/sh_safe.c b/app/src/main/cpp/shadowhook/sh_safe.c
new file mode 100644
index 0000000..eacc14d
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_safe.c
@@ -0,0 +1,133 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_safe.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include "sh_util.h"
+#include "xdl.h"
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wreserved-id-macro"
+#pragma clang diagnostic ignored "-Wvariadic-macros"
+#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
+#pragma clang diagnostic ignored "-Wsign-conversion"
+#pragma clang diagnostic ignored "-Wpacked"
+#pragma clang diagnostic ignored "-Wshorten-64-to-32"
+#include "linux_syscall_support.h"
+#pragma clang diagnostic pop
+
+#define SH_SAFE_IDX_PTHREAD_GETSPECIFIC 0
+#define SH_SAFE_IDX_PTHREAD_SETSPECIFIC 1
+#define SH_SAFE_IDX_ABORT               2
+
+#define SH_SAFE_IDX_SZ 3
+typedef struct {
+  uintptr_t target_addr;
+  uintptr_t orig_addr;
+} sh_safe_addr_t;
+static sh_safe_addr_t sh_safe_addrs[SH_SAFE_IDX_SZ];
+static int sh_safe_api_level;
+
+static int sh_safe_init_func(void *handle, const char *symbol, size_t idx) {
+  sh_safe_addrs[idx].target_addr = (uintptr_t)(xdl_sym(handle, symbol, NULL));
+  if (__predict_false(0 == sh_safe_addrs[idx].target_addr)) return -1;
+  sh_safe_addrs[idx].orig_addr = 0;
+  return 0;
+}
+
+int sh_safe_init(void) {
+  sh_safe_api_level = sh_util_get_api_level();
+
+  void *handle = xdl_open("libc.so", XDL_DEFAULT);
+  if (NULL == handle) return -1;
+
+  int r = -1;
+  if (__predict_false(0 != sh_safe_init_func(handle, "pthread_getspecific", SH_SAFE_IDX_PTHREAD_GETSPECIFIC)))
+    goto end;
+  if (__predict_false(0 != sh_safe_init_func(handle, "pthread_setspecific", SH_SAFE_IDX_PTHREAD_SETSPECIFIC)))
+    goto end;
+  if (__predict_false(0 != sh_safe_init_func(handle, "abort", SH_SAFE_IDX_ABORT))) goto end;
+  r = 0;
+
+end:
+  xdl_close(handle);
+  return r;
+}
+
+uintptr_t *sh_safe_get_orig_addr_addr(uintptr_t target_addr) {
+  for (size_t i = 0; i < SH_SAFE_IDX_SZ; i++) {
+    if (sh_safe_addrs[i].target_addr == target_addr) {
+      return &sh_safe_addrs[i].orig_addr;
+    }
+  }
+  return NULL;
+}
+
+static uintptr_t sh_safe_get_orig_addr(size_t idx) {
+  sh_safe_addr_t *addr = &sh_safe_addrs[idx];
+  return 0 != addr->orig_addr ? addr->orig_addr : addr->target_addr;
+}
+
+void *sh_safe_pthread_getspecific(pthread_key_t key) {
+  uintptr_t addr = sh_safe_get_orig_addr(SH_SAFE_IDX_PTHREAD_GETSPECIFIC);
+  return ((void *(*)(pthread_key_t))addr)(key);
+}
+
+int sh_safe_pthread_setspecific(pthread_key_t key, const void *value) {
+  if (sh_safe_api_level >= __ANDROID_API_M__) {
+    uintptr_t addr = sh_safe_get_orig_addr(SH_SAFE_IDX_PTHREAD_SETSPECIFIC);
+    return ((int (*)(pthread_key_t, const void *))addr)(key, value);
+  } else {
+    // Before Android M, pthread_setspecific() will call pthread_mutex_lock() and
+    // pthread_mutex_unlock(). So if we use pthread_setspecific() in hub's trampo,
+    // we will NOT be able to hook pthread_mutex_lock() and pthread_mutex_unlock().
+    void **tls;
+#if defined(__aarch64__)
+    __asm__("mrs %0, tpidr_el0" : "=r"(tls));
+#elif defined(__arm__)
+    __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r"(tls));
+#endif
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcast-qual"
+    tls[key] = (void *)value;
+#pragma clang diagnostic pop
+    return 0;
+  }
+}
+
+void sh_safe_abort(void) {
+  uintptr_t addr = sh_safe_get_orig_addr(SH_SAFE_IDX_ABORT);
+  ((void (*)(void))addr)();
+}
+
+void *sh_safe_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) {
+  return sys_mmap(addr, length, prot, flags, fd, offset);
+}
+
+int sh_safe_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4,
+                  unsigned long arg5) {
+  return sys_prctl(option, arg2, arg3, arg4, arg5);
+}
diff --git a/app/src/main/cpp/shadowhook/sh_safe.h b/app/src/main/cpp/shadowhook/sh_safe.h
new file mode 100644
index 0000000..5f353bd
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_safe.h
@@ -0,0 +1,37 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+int sh_safe_init(void);
+uintptr_t *sh_safe_get_orig_addr_addr(uintptr_t target_addr);
+
+void *sh_safe_pthread_getspecific(pthread_key_t key);
+int sh_safe_pthread_setspecific(pthread_key_t key, const void *value);
+void sh_safe_abort(void);
+
+void *sh_safe_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
+int sh_safe_prctl(int option, unsigned long arg2, unsigned long arg3, unsigned long arg4, unsigned long arg5);
diff --git a/app/src/main/cpp/shadowhook/sh_switch.c b/app/src/main/cpp/shadowhook/sh_switch.c
new file mode 100644
index 0000000..0eb7ba9
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_switch.c
@@ -0,0 +1,343 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_switch.h"
+
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "sh_config.h"
+#include "sh_errno.h"
+#include "sh_hub.h"
+#include "sh_inst.h"
+#include "sh_linker.h"
+#include "sh_log.h"
+#include "sh_safe.h"
+#include "sh_sig.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "tree.h"
+#include "xdl.h"
+
+// switch
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+typedef struct sh_switch {
+  sh_inst_t inst;  // align 16
+  uintptr_t target_addr;
+  sh_hub_t *hub;
+  RB_ENTRY(sh_switch) link;
+} sh_switch_t;
+#pragma clang diagnostic pop
+
+// switch tree
+static __inline__ int sh_switch_cmp(sh_switch_t *a, sh_switch_t *b) {
+  if (a->target_addr == b->target_addr)
+    return 0;
+  else
+    return a->target_addr > b->target_addr ? 1 : -1;
+}
+typedef RB_HEAD(sh_switch_tree, sh_switch) sh_switch_tree_t;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-function"
+RB_GENERATE_STATIC(sh_switch_tree, sh_switch, link, sh_switch_cmp)
+#pragma clang diagnostic pop
+
+// switch tree object
+static sh_switch_tree_t sh_switches = RB_INITIALIZER(&sh_switches);
+static pthread_rwlock_t sh_switches_lock = PTHREAD_RWLOCK_INITIALIZER;
+
+static sh_switch_t *sh_switch_find(uintptr_t target_addr) {
+  sh_switch_t key = {.target_addr = target_addr};
+
+  pthread_rwlock_rdlock(&sh_switches_lock);
+  sh_switch_t *self = RB_FIND(sh_switch_tree, &sh_switches, &key);
+  pthread_rwlock_unlock(&sh_switches_lock);
+
+  return self;
+}
+
+static int sh_switch_create(sh_switch_t **self, uintptr_t target_addr, uintptr_t *hub_trampo) {
+  *self = memalign(16, sizeof(sh_switch_t));
+  if (NULL == *self) return SHADOWHOOK_ERRNO_OOM;
+
+  memset(&(*self)->inst, 0, sizeof((*self)->inst));
+  (*self)->target_addr = target_addr;
+  (*self)->hub = NULL;
+
+  if (NULL != hub_trampo) {
+    if (NULL == ((*self)->hub = sh_hub_create(target_addr, hub_trampo))) {
+      free(self);
+      return SHADOWHOOK_ERRNO_HUB_CREAT;
+    }
+  }
+
+  return 0;
+}
+
+static void sh_switch_destroy(sh_switch_t *self, bool hub_with_delay) {
+  if (NULL != self->hub) sh_hub_destroy(self->hub, hub_with_delay);
+  free(self);
+}
+
+static void sh_switch_dump_enter(sh_switch_t *self) {
+#ifdef SH_CONFIG_DEBUG
+  char buf[1024];
+  size_t len = 0;
+  size_t zero = 0;
+  for (size_t i = 0; i < 128; i++) {
+    uint16_t inst = ((uint16_t *)(self->inst.enter_addr))[i];
+    zero = (0 == inst ? zero + 1 : 0);
+    if (zero > 4) break;
+    len += (size_t)snprintf(buf + len, sizeof(buf) - len, "%04" PRIx16 " ", inst);
+  }
+  SH_LOG_DEBUG("switch: enter < %s>", buf);
+#else
+  (void)self;
+#endif
+}
+
+static int sh_switch_hook_unique(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                                 size_t *backup_len, xdl_info_t *dlinfo) {
+  sh_switch_t *self = sh_switch_find(target_addr);
+  if (NULL != self) return SHADOWHOOK_ERRNO_HOOK_DUP;
+
+  // alloc new switch
+  int r;
+  if (0 != (r = sh_switch_create(&self, target_addr, NULL))) return r;
+
+  sh_switch_t *useless = NULL;
+  pthread_rwlock_wrlock(&sh_switches_lock);  // SYNC - start
+
+  // insert new switch to switch-tree
+  if (NULL != RB_INSERT(sh_switch_tree, &sh_switches, self)) {
+    useless = self;
+    r = SHADOWHOOK_ERRNO_HOOK_DUP;
+    goto end;
+  }
+
+  // do hook
+  if (0 != (r = sh_inst_hook(&self->inst, target_addr, dlinfo, new_addr, orig_addr, NULL))) {
+    RB_REMOVE(sh_switch_tree, &sh_switches, self);
+    useless = self;
+    goto end;
+  }
+  *backup_len = self->inst.backup_len;
+  sh_switch_dump_enter(self);
+
+end:
+  pthread_rwlock_unlock(&sh_switches_lock);  // SYNC - end
+  if (NULL != useless) sh_switch_destroy(useless, false);
+  return r;
+}
+
+static int sh_switch_hook_shared(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                                 size_t *backup_len, xdl_info_t *dlinfo) {
+  int r;
+
+  pthread_rwlock_rdlock(&sh_switches_lock);  // SYNC(read) - start
+  sh_switch_t key = {.target_addr = target_addr};
+  sh_switch_t *self = RB_FIND(sh_switch_tree, &sh_switches, &key);
+  if (NULL != self)  // already exists
+  {
+    // add an new proxy to hub
+    if (NULL != orig_addr) *orig_addr = sh_hub_get_orig_addr(self->hub);
+    r = sh_hub_add_proxy(self->hub, new_addr);
+    pthread_rwlock_unlock(&sh_switches_lock);  // SYNC(read) - end
+
+    *backup_len = self->inst.backup_len;
+    return r;
+  }
+  pthread_rwlock_unlock(&sh_switches_lock);  // SYNC(read) - end
+
+  // first hook for this target_addr
+
+  // alloc new switch
+  uintptr_t hub_trampo;
+  if (0 != (r = sh_switch_create(&self, target_addr, &hub_trampo))) return r;
+
+  sh_switch_t *useless = NULL;
+  pthread_rwlock_wrlock(&sh_switches_lock);  // SYNC - start
+
+  // insert new switch to switch-tree
+  sh_switch_t *exists;
+  if (NULL != (exists = RB_INSERT(sh_switch_tree, &sh_switches, self))) {
+    // already exists
+    useless = self;
+    if (NULL != orig_addr) *orig_addr = sh_hub_get_orig_addr(exists->hub);
+    r = sh_hub_add_proxy(exists->hub, new_addr);
+    *backup_len = exists->inst.backup_len;
+  } else {
+    // do hook
+    uintptr_t *safe_orig_addr_addr = sh_safe_get_orig_addr_addr(target_addr);
+    if (0 != (r = sh_inst_hook(&self->inst, target_addr, dlinfo, hub_trampo,
+                               sh_hub_get_orig_addr_addr(self->hub), safe_orig_addr_addr))) {
+      RB_REMOVE(sh_switch_tree, &sh_switches, self);
+      useless = self;
+      goto end;
+    }
+    *backup_len = self->inst.backup_len;
+    sh_switch_dump_enter(self);
+
+    // return original-address
+    if (NULL != orig_addr) *orig_addr = sh_hub_get_orig_addr(self->hub);
+
+    // add proxy to hub
+    if (0 != (r = sh_hub_add_proxy(self->hub, new_addr))) {
+      sh_inst_unhook(&self->inst, target_addr);
+      *backup_len = 0;
+      RB_REMOVE(sh_switch_tree, &sh_switches, self);
+      useless = self;
+      goto end;
+    }
+  }
+
+end:
+  pthread_rwlock_unlock(&sh_switches_lock);  // SYNC - end
+  if (NULL != useless) sh_switch_destroy(useless, false);
+
+  return r;
+}
+
+int sh_switch_hook(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr, size_t *backup_len,
+                   xdl_info_t *dlinfo) {
+  int r;
+  if (SHADOWHOOK_IS_UNIQUE_MODE)
+    r = sh_switch_hook_unique(target_addr, new_addr, orig_addr, backup_len, dlinfo);
+  else
+    r = sh_switch_hook_shared(target_addr, new_addr, orig_addr, backup_len, dlinfo);
+
+  if (0 == r)
+    SH_LOG_INFO("switch: hook in %s mode OK: target_addr %" PRIxPTR ", new_addr %" PRIxPTR,
+                SHADOWHOOK_IS_UNIQUE_MODE ? "UNIQUE" : "SHARED", target_addr, new_addr);
+
+  return r;
+}
+
+static int sh_switch_hook_unique_invisible(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                                           size_t *backup_len, xdl_info_t *dlinfo) {
+  pthread_rwlock_wrlock(&sh_switches_lock);  // SYNC - start
+
+  // do hook
+  sh_inst_t inst;
+  int r = sh_inst_hook(&inst, target_addr, dlinfo, new_addr, orig_addr, NULL);
+
+  pthread_rwlock_unlock(&sh_switches_lock);  // SYNC - end
+
+  *backup_len = inst.backup_len;
+  return r;
+}
+
+int sh_switch_hook_invisible(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                             size_t *backup_len, xdl_info_t *dlinfo) {
+  int r;
+  if (SHADOWHOOK_IS_UNIQUE_MODE)
+    r = sh_switch_hook_unique_invisible(target_addr, new_addr, orig_addr, backup_len, dlinfo);
+  else
+    r = sh_switch_hook_shared(target_addr, new_addr, orig_addr, backup_len, dlinfo);
+
+  if (0 == r)
+    SH_LOG_INFO("switch: hook(invisible) in %s mode OK: target_addr %" PRIxPTR ", new_addr %" PRIxPTR,
+                SHADOWHOOK_IS_UNIQUE_MODE ? "UNIQUE" : "SHARED", target_addr, new_addr);
+  return r;
+}
+
+static int sh_switch_unhook_unique(uintptr_t target_addr) {
+  int r;
+  sh_switch_t *useless = NULL;
+
+  pthread_rwlock_wrlock(&sh_switches_lock);  // SYNC - start
+
+  sh_switch_t key = {.target_addr = target_addr};
+  sh_switch_t *self = RB_FIND(sh_switch_tree, &sh_switches, &key);
+  if (NULL == self) {
+    r = SHADOWHOOK_ERRNO_UNHOOK_NOTFOUND;
+    goto end;
+  }
+  r = sh_inst_unhook(&self->inst, target_addr);
+  RB_REMOVE(sh_switch_tree, &sh_switches, self);
+  useless = self;
+
+end:
+  pthread_rwlock_unlock(&sh_switches_lock);  // SYNC - end
+  if (NULL != useless) sh_switch_destroy(useless, false);
+  return r;
+}
+
+static int sh_switch_unhook_shared(uintptr_t target_addr, uintptr_t new_addr) {
+  int r;
+  sh_switch_t *useless = NULL;
+
+  pthread_rwlock_wrlock(&sh_switches_lock);  // SYNC - start
+
+  sh_switch_t key = {.target_addr = target_addr};
+  sh_switch_t *self = RB_FIND(sh_switch_tree, &sh_switches, &key);
+  if (NULL == self) {
+    r = SHADOWHOOK_ERRNO_UNHOOK_NOTFOUND;
+    goto end;
+  }
+
+  // delete proxy in hub
+  bool have_enabled_proxy;
+  if (0 != sh_hub_del_proxy(self->hub, new_addr, &have_enabled_proxy)) {
+    r = SHADOWHOOK_ERRNO_UNHOOK_NOTFOUND;
+    goto end;
+  }
+  r = 0;
+
+  // unhook inst, remove current switch from switch-tree
+  if (!have_enabled_proxy) {
+    r = sh_inst_unhook(&self->inst, target_addr);
+
+    uintptr_t *safe_orig_addr_addr = sh_safe_get_orig_addr_addr(target_addr);
+    if (NULL != safe_orig_addr_addr) __atomic_store_n(safe_orig_addr_addr, 0, __ATOMIC_SEQ_CST);
+
+    RB_REMOVE(sh_switch_tree, &sh_switches, self);
+    useless = self;
+  }
+
+end:
+  pthread_rwlock_unlock(&sh_switches_lock);  // SYNC - end
+  if (NULL != useless) sh_switch_destroy(useless, true);
+  return r;
+}
+
+int sh_switch_unhook(uintptr_t target_addr, uintptr_t new_addr) {
+  int r;
+  if (SHADOWHOOK_IS_UNIQUE_MODE) {
+    r = sh_switch_unhook_unique(target_addr);
+    if (0 == r) SH_LOG_INFO("switch: unhook in UNIQUE mode OK: target_addr %" PRIxPTR, target_addr);
+  } else {
+    r = sh_switch_unhook_shared(target_addr, new_addr);
+    if (0 == r)
+      SH_LOG_INFO("switch: unhook in SHARED mode OK: target_addr %" PRIxPTR ", new_addr %" PRIxPTR,
+                  target_addr, new_addr);
+  }
+
+  return r;
+}
diff --git a/app/src/main/cpp/shadowhook/sh_switch.h b/app/src/main/cpp/shadowhook/sh_switch.h
new file mode 100644
index 0000000..3899a93
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_switch.h
@@ -0,0 +1,34 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdint.h>
+
+#include "xdl.h"
+
+int sh_switch_hook(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr, size_t *backup_len,
+                   xdl_info_t *dlinfo);
+int sh_switch_unhook(uintptr_t target_addr, uintptr_t new_addr);
+
+int sh_switch_hook_invisible(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                             size_t *backup_len, xdl_info_t *dlinfo);
diff --git a/app/src/main/cpp/shadowhook/sh_task.c b/app/src/main/cpp/shadowhook/sh_task.c
new file mode 100644
index 0000000..49ad751
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_task.c
@@ -0,0 +1,333 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "sh_task.h"
+
+#include <inttypes.h>
+#include <malloc.h>
+#include <poll.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/eventfd.h>
+#include <unistd.h>
+
+#include "queue.h"
+#include "sh_config.h"
+#include "sh_errno.h"
+#include "sh_linker.h"
+#include "sh_log.h"
+#include "sh_recorder.h"
+#include "sh_sig.h"
+#include "sh_switch.h"
+#include "sh_util.h"
+#include "shadowhook.h"
+#include "xdl.h"
+
+#define SH_TASK_THREAD_NAME "shadowhook-task"
+
+// task
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+struct sh_task {
+  char *lib_name;
+  char *sym_name;
+  uintptr_t target_addr;
+  uintptr_t new_addr;
+  uintptr_t *orig_addr;
+  shadowhook_hooked_t hooked;
+  void *hooked_arg;
+  uintptr_t caller_addr;
+  bool finished;
+  bool error;
+  bool ignore_symbol_check;
+  TAILQ_ENTRY(sh_task, ) link;
+};
+#pragma clang diagnostic pop
+
+// task queue
+typedef TAILQ_HEAD(sh_task_queue, sh_task, ) sh_task_queue_t;
+
+// task queue object
+static sh_task_queue_t sh_tasks = TAILQ_HEAD_INITIALIZER(sh_tasks);
+static pthread_rwlock_t sh_tasks_lock = PTHREAD_RWLOCK_INITIALIZER;
+static int sh_tasks_unfinished_cnt = 0;
+
+static int sh_task_eventfd;
+static int thread_started_result = SHADOWHOOK_ERRNO_MONITOR_THREAD;
+
+sh_task_t *sh_task_create_by_target_addr(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                                         bool ignore_symbol_check, uintptr_t caller_addr) {
+  sh_task_t *self = malloc(sizeof(sh_task_t));
+  if (NULL == self) return NULL;
+  self->lib_name = NULL;
+  self->sym_name = NULL;
+  self->target_addr = target_addr;
+  self->new_addr = new_addr;
+  self->orig_addr = orig_addr;
+  self->hooked = NULL;
+  self->hooked_arg = NULL;
+  self->caller_addr = caller_addr;
+  self->finished = false;
+  self->error = false;
+  self->ignore_symbol_check = ignore_symbol_check;
+
+  return self;
+}
+
+sh_task_t *sh_task_create_by_sym_name(const char *lib_name, const char *sym_name, uintptr_t new_addr,
+                                      uintptr_t *orig_addr, shadowhook_hooked_t hooked, void *hooked_arg,
+                                      uintptr_t caller_addr) {
+  sh_task_t *self = malloc(sizeof(sh_task_t));
+  if (NULL == self) return NULL;
+
+  if (NULL == (self->lib_name = strdup(lib_name))) goto err;
+  if (NULL == (self->sym_name = strdup(sym_name))) goto err;
+  self->target_addr = 0;
+  self->new_addr = new_addr;
+  self->orig_addr = orig_addr;
+  self->hooked = hooked;
+  self->hooked_arg = hooked_arg;
+  self->caller_addr = caller_addr;
+  self->finished = false;
+  self->error = false;
+  self->ignore_symbol_check = false;
+
+  return self;
+
+err:
+  if (NULL != self->lib_name) free(self->lib_name);
+  if (NULL != self->sym_name) free(self->sym_name);
+  free(self);
+  return NULL;
+}
+
+void sh_task_destroy(sh_task_t *self) {
+  if (NULL != self->lib_name) free(self->lib_name);
+  if (NULL != self->sym_name) free(self->sym_name);
+  free(self);
+}
+
+static void sh_task_do_callback(sh_task_t *self, int error_number) {
+  if (NULL != self->hooked)
+    self->hooked(error_number, self->lib_name, self->sym_name, (void *)self->target_addr,
+                 (void *)self->new_addr, self->orig_addr, self->hooked_arg);
+}
+
+static int sh_task_hook_pending(struct dl_phdr_info *info, size_t size, void *arg) {
+  (void)size, (void)arg;
+
+  pthread_rwlock_rdlock(&sh_tasks_lock);
+
+  sh_task_t *task;
+  TAILQ_FOREACH(task, &sh_tasks, link) {
+    if (task->finished) continue;
+    if ('/' == info->dlpi_name[0] && NULL == strstr(info->dlpi_name, task->lib_name)) continue;
+    if ('/' != info->dlpi_name[0] && NULL == strstr(task->lib_name, info->dlpi_name)) continue;
+
+    xdl_info_t dlinfo;
+    char real_lib_name[512];
+    int r = sh_linker_get_dlinfo_by_sym_name(task->lib_name, task->sym_name, &dlinfo, real_lib_name,
+                                             sizeof(real_lib_name));
+    task->target_addr = (uintptr_t)dlinfo.dli_saddr;
+    if (SHADOWHOOK_ERRNO_PENDING != r) {
+      size_t backup_len = 0;
+      if (0 == r) {
+        r = sh_switch_hook(task->target_addr, task->new_addr, task->orig_addr, &backup_len, &dlinfo);
+        if (0 != r) task->error = true;
+      } else {
+        strlcpy(real_lib_name, task->lib_name, sizeof(real_lib_name));
+        task->error = true;
+      }
+      sh_recorder_add_hook(r, false, task->target_addr, real_lib_name, task->sym_name, task->new_addr,
+                           backup_len, (uintptr_t)task, task->caller_addr);
+      task->finished = true;
+      sh_task_do_callback(task, r);
+      if (0 == __atomic_sub_fetch(&sh_tasks_unfinished_cnt, 1, __ATOMIC_SEQ_CST)) break;
+    }
+  }
+
+  pthread_rwlock_unlock(&sh_tasks_lock);
+
+  return __atomic_load_n(&sh_tasks_unfinished_cnt, __ATOMIC_SEQ_CST) > 0 ? 0 : 1;
+}
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu-statement-expression"
+
+static void sh_task_post_dlopen_callback(void *arg) {
+  (void)arg;
+
+  if (0 == thread_started_result && __atomic_load_n(&sh_tasks_unfinished_cnt, __ATOMIC_SEQ_CST) > 0) {
+    uint64_t ev_val = 1;
+    SH_UTIL_TEMP_FAILURE_RETRY(write(sh_task_eventfd, &ev_val, sizeof(ev_val)));
+  }
+}
+
+__noreturn static void *sh_task_thread_func(void *arg) {
+  (void)arg;
+  pthread_t thread = pthread_self();
+  pthread_setname_np(thread, SH_TASK_THREAD_NAME);
+  pthread_detach(thread);
+
+  struct pollfd ev = {.fd = sh_task_eventfd, .events = POLLIN, .revents = 0};
+  while (1) {
+    int n = SH_UTIL_TEMP_FAILURE_RETRY(poll(&ev, 1, -1));
+    if (n < 0) {
+      sleep(1);
+      continue;
+    } else if (n > 0) {
+      uint64_t ev_val;
+      SH_UTIL_TEMP_FAILURE_RETRY(read(sh_task_eventfd, &ev_val, sizeof(ev_val)));
+
+      if (sh_util_get_api_level() >= __ANDROID_API_L__) {
+        xdl_iterate_phdr(sh_task_hook_pending, NULL, XDL_DEFAULT);
+      } else {
+        SH_SIG_TRY(SIGSEGV, SIGBUS) {
+          xdl_iterate_phdr(sh_task_hook_pending, NULL, XDL_DEFAULT);
+        }
+        SH_SIG_CATCH() {
+          SH_LOG_WARN("task: dliterate crashed");
+        }
+        SH_SIG_EXIT
+      }
+    }
+  }
+}
+
+#pragma clang diagnostic pop
+
+static int sh_task_start_monitor(bool start_thread) {
+  static bool thread_started = false;
+  static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+  pthread_t thread;
+  int r;
+
+  // hook linker dlopen()
+  if (0 != (r = sh_linker_hook_dlopen(sh_task_post_dlopen_callback, NULL))) return r;
+
+  if (!start_thread) return 0;
+
+  // start thread
+  if (thread_started) return thread_started_result;
+  pthread_mutex_lock(&lock);
+  if (thread_started) goto end;
+
+  if (0 > (sh_task_eventfd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC))) goto end;
+  if (0 != pthread_create(&thread, NULL, &sh_task_thread_func, NULL)) goto end;
+
+  // OK
+  thread_started_result = 0;
+
+end:
+  thread_started = true;
+  pthread_mutex_unlock(&lock);
+  SH_LOG_INFO("task: start monitor %s, return: %d", 0 == thread_started_result ? "OK" : "FAILED",
+              thread_started_result);
+  return thread_started_result;
+}
+
+int sh_task_hook(sh_task_t *self) {
+  int r;
+  bool is_hook_sym_addr = true;
+  char real_lib_name[512] = "unknown";
+  char real_sym_name[1024] = "unknown";
+  size_t backup_len = 0;
+
+  // find target-address by library-name and symbol-name
+  xdl_info_t dlinfo;
+  memset(&dlinfo, 0, sizeof(xdl_info_t));
+  if (0 == self->target_addr) {
+    is_hook_sym_addr = false;
+    strlcpy(real_lib_name, self->lib_name, sizeof(real_lib_name));
+    strlcpy(real_sym_name, self->sym_name, sizeof(real_sym_name));
+    r = sh_linker_get_dlinfo_by_sym_name(self->lib_name, self->sym_name, &dlinfo, real_lib_name,
+                                         sizeof(real_lib_name));
+    if (SHADOWHOOK_ERRNO_PENDING == r) {
+      // we need to start monitor linker dlopen for handle the pending task
+      if (0 != (r = sh_task_start_monitor(true))) goto end;
+      r = SHADOWHOOK_ERRNO_PENDING;
+      goto end;
+    }
+    if (0 != r) goto end;                             // error
+    self->target_addr = (uintptr_t)dlinfo.dli_saddr;  // OK
+  } else {
+    r = sh_linker_get_dlinfo_by_addr((void *)self->target_addr, &dlinfo, real_lib_name, sizeof(real_lib_name),
+                                     real_sym_name, sizeof(real_sym_name), self->ignore_symbol_check);
+    if (0 != r) goto end;  // error
+  }
+
+  // In UNIQUE mode, if external users are hooking the linker dlopen() or do_dlopen(),
+  // we MUST hook this method with invisible for ourself first.
+  if (sh_linker_need_to_hook_dlopen(self->target_addr)) {
+    SH_LOG_INFO("task: hook dlopen/do_dlopen internal. target-address %" PRIxPTR, self->target_addr);
+    if (0 != (r = sh_task_start_monitor(false))) goto end;
+  }
+
+  // hook by target-address
+  r = sh_switch_hook(self->target_addr, self->new_addr, self->orig_addr, &backup_len, &dlinfo);
+  self->finished = true;
+
+end:
+  if (0 == r || SHADOWHOOK_ERRNO_PENDING == r)  // "PENDING" is NOT an error
+  {
+    pthread_rwlock_wrlock(&sh_tasks_lock);
+    TAILQ_INSERT_TAIL(&sh_tasks, self, link);
+    if (!self->finished) __atomic_add_fetch(&sh_tasks_unfinished_cnt, 1, __ATOMIC_SEQ_CST);
+    pthread_rwlock_unlock(&sh_tasks_lock);
+  }
+
+  // record
+  sh_recorder_add_hook(r, is_hook_sym_addr, self->target_addr, real_lib_name, real_sym_name, self->new_addr,
+                       backup_len, (uintptr_t)self, self->caller_addr);
+
+  return r;
+}
+
+int sh_task_unhook(sh_task_t *self, uintptr_t caller_addr) {
+  pthread_rwlock_wrlock(&sh_tasks_lock);
+  TAILQ_REMOVE(&sh_tasks, self, link);
+  if (!self->finished) __atomic_sub_fetch(&sh_tasks_unfinished_cnt, 1, __ATOMIC_SEQ_CST);
+  pthread_rwlock_unlock(&sh_tasks_lock);
+
+  // check task status
+  int r;
+  if (self->error) {
+    r = SHADOWHOOK_ERRNO_UNHOOK_ON_ERROR;
+    goto end;
+  }
+  if (!self->finished) {
+    r = SHADOWHOOK_ERRNO_UNHOOK_ON_UNFINISHED;
+    goto end;
+  }
+
+  // do unhook
+  r = sh_switch_unhook(self->target_addr, self->new_addr);
+
+end:
+  // record
+  sh_recorder_add_unhook(r, (uintptr_t)self, caller_addr);
+  return r;
+}
diff --git a/app/src/main/cpp/shadowhook/sh_task.h b/app/src/main/cpp/shadowhook/sh_task.h
new file mode 100644
index 0000000..e26aef9
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/sh_task.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#pragma once
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "shadowhook.h"
+
+typedef struct sh_task sh_task_t;
+
+sh_task_t *sh_task_create_by_target_addr(uintptr_t target_addr, uintptr_t new_addr, uintptr_t *orig_addr,
+                                         bool ignore_symbol_check, uintptr_t caller_addr);
+sh_task_t *sh_task_create_by_sym_name(const char *lib_name, const char *sym_name, uintptr_t new_addr,
+                                      uintptr_t *orig_addr, shadowhook_hooked_t hooked, void *hooked_arg,
+                                      uintptr_t caller_addr);
+void sh_task_destroy(sh_task_t *self);
+
+int sh_task_hook(sh_task_t *self);
+int sh_task_unhook(sh_task_t *self, uintptr_t caller_addr);
diff --git a/app/src/main/cpp/shadowhook/shadowhook.c b/app/src/main/cpp/shadowhook/shadowhook.c
new file mode 100644
index 0000000..254cda1
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/shadowhook.c
@@ -0,0 +1,328 @@
+// Copyright (c) 2021-2022 ByteDance Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by Kelun Cai (caikelun@bytedance.com) on 2021-04-11.
+
+#include "shadowhook.h"
+
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "bytesig.h"
+#include "sh_enter.h"
+#include "sh_errno.h"
+#include "sh_exit.h"
+#include "sh_hub.h"
+#include "sh_linker.h"
+#include "sh_log.h"
+#include "sh_recorder.h"
+#include "sh_safe.h"
+#include "sh_sig.h"
+#include "sh_switch.h"
+#include "sh_task.h"
+#include "sh_util.h"
+#include "xdl.h"
+
+#define GOTO_ERR(errnum) \
+  do {                   \
+    r = errnum;          \
+    goto err;            \
+  } while (0)
+
+static int shadowhook_init_errno = SHADOWHOOK_ERRNO_UNINIT;
+static shadowhook_mode_t shadowhook_mode = SHADOWHOOK_MODE_SHARED;
+
+const char *shadowhook_get_version(void) {
+  return "shadowhook version " SHADOWHOOK_VERSION;
+}
+
+int shadowhook_init(shadowhook_mode_t mode, bool debuggable) {
+  bool do_init = false;
+
+  if (__predict_true(SHADOWHOOK_ERRNO_UNINIT == shadowhook_init_errno)) {
+    static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+    pthread_mutex_lock(&lock);
+    if (__predict_true(SHADOWHOOK_ERRNO_UNINIT == shadowhook_init_errno)) {
+      do_init = true;
+      shadowhook_mode = mode;
+      sh_log_set_debuggable(debuggable);
+
+#define GOTO_END(errnum)            \
+  do {                              \
+    shadowhook_init_errno = errnum; \
+    goto end;                       \
+  } while (0)
+
+      if (__predict_false(0 != sh_errno_init())) GOTO_END(SHADOWHOOK_ERRNO_INIT_ERRNO);
+      if (__predict_false(0 != bytesig_init(SIGSEGV))) GOTO_END(SHADOWHOOK_ERRNO_INIT_SIGSEGV);
+      if (__predict_false(0 != bytesig_init(SIGBUS))) GOTO_END(SHADOWHOOK_ERRNO_INIT_SIGBUS);
+      if (__predict_false(0 != sh_enter_init())) GOTO_END(SHADOWHOOK_ERRNO_INIT_ENTER);
+      sh_exit_init();
+      if (SHADOWHOOK_MODE_SHARED == shadowhook_mode) {
+        if (__predict_false(0 != sh_safe_init())) GOTO_END(SHADOWHOOK_ERRNO_INIT_SAFE);
+        if (__predict_false(0 != sh_hub_init())) GOTO_END(SHADOWHOOK_ERRNO_INIT_HUB);
+      } else {
+        if (__predict_false(0 != sh_linker_init())) GOTO_END(SHADOWHOOK_ERRNO_INIT_LINKER);
+      }
+
+#undef GOTO_END
+
+      shadowhook_init_errno = SHADOWHOOK_ERRNO_OK;
+    }
+  end:
+    pthread_mutex_unlock(&lock);
+  }
+
+  SH_LOG_ALWAYS_SHOW("%s: shadowhook init(mode: %s, debuggable: %s), return: %d, real-init: %s",
+                     shadowhook_get_version(), SHADOWHOOK_MODE_SHARED == mode ? "SHARED" : "UNIQUE",
+                     debuggable ? "true" : "false", shadowhook_init_errno, do_init ? "yes" : "no");
+  SH_ERRNO_SET_RET_ERRNUM(shadowhook_init_errno);
+}
+
+int shadowhook_get_init_errno(void) {
+  return shadowhook_init_errno;
+}
+
+shadowhook_mode_t shadowhook_get_mode(void) {
+  return shadowhook_mode;
+}
+
+bool shadowhook_get_debuggable(void) {
+  return sh_log_get_debuggable();
+}
+
+void shadowhook_set_debuggable(bool debuggable) {
+  sh_log_set_debuggable(debuggable);
+}
+
+bool shadowhook_get_recordable(void) {
+  return sh_recorder_get_recordable();
+}
+
+void shadowhook_set_recordable(bool recordable) {
+  sh_recorder_set_recordable(recordable);
+}
+
+int shadowhook_get_errno(void) {
+  return sh_errno_get();
+}
+
+const char *shadowhook_to_errmsg(int error_number) {
+  return sh_errno_to_errmsg(error_number);
+}
+
+static void *shadowhook_hook_addr_impl(void *sym_addr, void *new_addr, void **orig_addr,
+                                       bool ignore_symbol_check, uintptr_t caller_addr) {
+  SH_LOG_INFO("shadowhook: hook_%s_addr(%p, %p) ...", ignore_symbol_check ? "func" : "sym", sym_addr,
+              new_addr);
+  sh_errno_reset();
+
+  int r;
+  if (NULL == sym_addr || NULL == new_addr) GOTO_ERR(SHADOWHOOK_ERRNO_INVALID_ARG);
+  if (SHADOWHOOK_ERRNO_OK != shadowhook_init_errno) GOTO_ERR(shadowhook_init_errno);
+
+  // create task
+  sh_task_t *task =
+      sh_task_create_by_target_addr((uintptr_t)sym_addr, (uintptr_t)new_addr, (uintptr_t *)orig_addr,
+                                    ignore_symbol_check, (uintptr_t)caller_addr);
+  if (NULL == task) GOTO_ERR(SHADOWHOOK_ERRNO_OOM);
+
+  // do hook
+  r = sh_task_hook(task);
+  if (0 != r) {
+    sh_task_destroy(task);
+    GOTO_ERR(r);
+  }
+
+  // OK
+  SH_LOG_INFO("shadowhook: hook_%s_addr(%p, %p) OK. return: %p", ignore_symbol_check ? "func" : "sym",
+              sym_addr, new_addr, (void *)task);
+  SH_ERRNO_SET_RET(SHADOWHOOK_ERRNO_OK, (void *)task);
+
+err:
+  SH_LOG_ERROR("shadowhook: hook_%s_addr(%p, %p) FAILED. %d - %s", ignore_symbol_check ? "func" : "sym",
+               sym_addr, new_addr, r, sh_errno_to_errmsg(r));
+  SH_ERRNO_SET_RET_NULL(r);
+}
+
+void *shadowhook_hook_func_addr(void *func_addr, void *new_addr, void **orig_addr) {
+  const void *caller_addr = __builtin_return_address(0);
+  return shadowhook_hook_addr_impl(func_addr, new_addr, orig_addr, true, (uintptr_t)caller_addr);
+}
+
+void *shadowhook_hook_sym_addr(void *sym_addr, void *new_addr, void **orig_addr) {
+  const void *caller_addr = __builtin_return_address(0);
+  return shadowhook_hook_addr_impl(sym_addr, new_addr, orig_addr, false, (uintptr_t)caller_addr);
+}
+
+static void *shadowhook_hook_sym_name_impl(const char *lib_name, const char *sym_name, void *new_addr,
+                                           void **orig_addr, shadowhook_hooked_t hooked, void *hooked_arg,
+                                           uintptr_t caller_addr) {
+  SH_LOG_INFO("shadowhook: hook_sym_name(%s, %s, %p) ...", lib_name, sym_name, new_addr);
+  sh_errno_reset();
+
+  int r;
+  if (NULL == lib_name || NULL == sym_name || NULL == new_addr) GOTO_ERR(SHADOWHOOK_ERRNO_INVALID_ARG);
+  if (SHADOWHOOK_ERRNO_OK != shadowhook_init_errno) GOTO_ERR(shadowhook_init_errno);
+
+  // create task
+  sh_task_t *task =
+      sh_task_create_by_sym_name(lib_name, sym_name, (uintptr_t)new_addr, (uintptr_t *)orig_addr, hooked,
+                                 hooked_arg, (uintptr_t)caller_addr);
+  if (NULL == task) GOTO_ERR(SHADOWHOOK_ERRNO_OOM);
+
+  // do hook
+  r = sh_task_hook(task);
+  if (0 != r && SHADOWHOOK_ERRNO_PENDING != r) {
+    sh_task_destroy(task);
+    GOTO_ERR(r);
+  }
+
+  // OK
+  SH_LOG_INFO("shadowhook: hook_sym_name(%s, %s, %p) OK. return: %p. %d - %s", lib_name, sym_name, new_addr,
+              (void *)task, r, sh_errno_to_errmsg(r));
+  SH_ERRNO_SET_RET(r, (void *)task);
+
+err:
+  SH_LOG_ERROR("shadowhook: hook_sym_name(%s, %s, %p) FAILED. %d - %s", lib_name, sym_name, new_addr, r,
+               sh_errno_to_errmsg(r));
+  SH_ERRNO_SET_RET_NULL(r);
+}
+
+void *shadowhook_hook_sym_name(const char *lib_name, const char *sym_name, void *new_addr, void **orig_addr) {
+  const void *caller_addr = __builtin_return_address(0);
+  return shadowhook_hook_sym_name_impl(lib_name, sym_name, new_addr, orig_addr, NULL, NULL,
+                                       (uintptr_t)caller_addr);
+}
+
+void *shadowhook_hook_sym_name_callback(const char *lib_name, const char *sym_name, void *new_addr,
+                                        void **orig_addr, shadowhook_hooked_t hooked, void *hooked_arg) {
+  const void *caller_addr = __builtin_return_address(0);
+  return shadowhook_hook_sym_name_impl(lib_name, sym_name, new_addr, orig_addr, hooked, hooked_arg,
+                                       (uintptr_t)caller_addr);
+}
+
+int shadowhook_unhook(void *stub) {
+  const void *caller_addr = __builtin_return_address(0);
+  SH_LOG_INFO("shadowhook: unhook(%p) ...", stub);
+  sh_errno_reset();
+
+  int r;
+  if (NULL == stub) GOTO_ERR(SHADOWHOOK_ERRNO_INVALID_ARG);
+  if (SHADOWHOOK_ERRNO_OK != shadowhook_init_errno) GOTO_ERR(shadowhook_init_errno);
+
+  sh_task_t *task = (sh_task_t *)stub;
+  r = sh_task_unhook(task, (uintptr_t)caller_addr);
+  sh_task_destroy(task);
+  if (0 != r) GOTO_ERR(r);
+
+  // OK
+  SH_LOG_INFO("shadowhook: unhook(%p) OK", stub);
+  SH_ERRNO_SET_RET_ERRNUM(SHADOWHOOK_ERRNO_OK);
+
+err:
+  SH_LOG_ERROR("shadowhook: unhook(%p) FAILED. %d - %s", stub, r, sh_errno_to_errmsg(r));
+  SH_ERRNO_SET_RET_FAIL(r);
+}
+
+char *shadowhook_get_records(uint32_t item_flags) {
+  return sh_recorder_get(item_flags);
+}
+
+void shadowhook_dump_records(int fd, uint32_t item_flags) {
+  sh_recorder_dump(fd, item_flags);
+}
+
+void *shadowhook_dlopen(const char *lib_name) {
+  void *handle = NULL;
+  if (sh_util_get_api_level() >= __ANDROID_API_L__) {
+    handle = xdl_open(lib_name, XDL_DEFAULT);
+  } else {
+    SH_SIG_TRY(SIGSEGV, SIGBUS) {
+      handle = xdl_open(lib_name, XDL_DEFAULT);
+    }
+    SH_SIG_CATCH() {
+      SH_LOG_WARN("shadowhook: dlopen crashed - %s", lib_name);
+    }
+    SH_SIG_EXIT
+  }
+  return handle;
+}
+
+void shadowhook_dlclose(void *handle) {
+  xdl_close(handle);
+}
+
+void *shadowhook_dlsym(void *handle, const char *sym_name) {
+  void *addr = shadowhook_dlsym_dynsym(handle, sym_name);
+  if (NULL == addr) addr = shadowhook_dlsym_symtab(handle, sym_name);
+  return addr;
+}
+
+void *shadowhook_dlsym_dynsym(void *handle, const char *sym_name) {
+  void *addr = NULL;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    addr = xdl_sym(handle, sym_name, NULL);
+  }
+  SH_SIG_CATCH() {
+    SH_LOG_WARN("shadowhook: dlsym_dynsym crashed - %p, %s", handle, sym_name);
+  }
+  SH_SIG_EXIT
+  return addr;
+}
+
+void *shadowhook_dlsym_symtab(void *handle, const char *sym_name) {
+  void *addr = NULL;
+  SH_SIG_TRY(SIGSEGV, SIGBUS) {
+    addr = xdl_dsym(handle, sym_name, NULL);
+  }
+  SH_SIG_CATCH() {
+    SH_LOG_WARN("shadowhook: dlsym_symtab crashed - %p, %s", handle, sym_name);
+  }
+  SH_SIG_EXIT
+  return addr;
+}
+
+void *shadowhook_get_prev_func(void *func) {
+  if (__predict_false(SHADOWHOOK_IS_UNIQUE_MODE)) abort();
+  return sh_hub_get_prev_func(func);
+}
+
+void shadowhook_pop_stack(void *return_address) {
+  if (__predict_false(SHADOWHOOK_IS_UNIQUE_MODE)) abort();
+  sh_hub_pop_stack(return_address);
+}
+
+void shadowhook_allow_reentrant(void *return_address) {
+  if (__predict_false(SHADOWHOOK_IS_UNIQUE_MODE)) abort();
+  sh_hub_allow_reentrant(return_address);
+}
+
+void shadowhook_disallow_reentrant(void *return_address) {
+  if (__predict_false(SHADOWHOOK_IS_UNIQUE_MODE)) abort();
+  sh_hub_disallow_reentrant(return_address);
+}
+
+void *shadowhook_get_return_address(void) {
+  if (__predict_false(SHADOWHOOK_IS_UNIQUE_MODE)) abort();
+  return sh_hub_get_return_address();
+}
diff --git a/app/src/main/cpp/shadowhook/shadowhook.map.txt b/app/src/main/cpp/shadowhook/shadowhook.map.txt
new file mode 100644
index 0000000..48c0ef4
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/shadowhook.map.txt
@@ -0,0 +1,41 @@
+{
+    global:
+        JNI_OnLoad;
+
+        shadowhook_get_version;
+
+        shadowhook_init;
+
+        shadowhook_get_mode;
+        shadowhook_get_debuggable;
+        shadowhook_set_debuggable;
+        shadowhook_get_recordable;
+        shadowhook_set_recordable;
+
+        shadowhook_get_errno;
+        shadowhook_to_errmsg;
+
+        shadowhook_hook_func_addr;
+        shadowhook_hook_sym_addr;
+        shadowhook_hook_sym_name;
+        shadowhook_hook_sym_name_callback;
+        shadowhook_unhook;
+
+        shadowhook_get_records;
+        shadowhook_dump_records;
+
+        shadowhook_dlopen;
+        shadowhook_dlclose;
+        shadowhook_dlsym;
+        shadowhook_dlsym_dynsym;
+        shadowhook_dlsym_symtab;
+
+        shadowhook_get_prev_func;
+        shadowhook_pop_stack;
+        shadowhook_allow_reentrant;
+        shadowhook_disallow_reentrant;
+        shadowhook_get_return_address;
+
+    local:
+        *;
+};
diff --git a/app/src/main/cpp/shadowhook/third_party/bsd/queue.h b/app/src/main/cpp/shadowhook/third_party/bsd/queue.h
new file mode 100644
index 0000000..f550f6c
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/bsd/queue.h
@@ -0,0 +1,551 @@
+/*-
+ * Copyright (c) 1991, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef QUEUE_H
+#define QUEUE_H
+
+/* #include <sys/cdefs.h> */
+#define QUEUE_CONTAINER_OF(ptr, type, field) ((type *)((char *)(ptr) - ((char *)&((type *)0)->field)))
+
+/*
+ * This file defines four types of data structures: singly-linked lists,
+ * singly-linked tail queues, lists and tail queues.
+ *
+ * A singly-linked list is headed by a single forward pointer. The elements
+ * are singly linked for minimum space and pointer manipulation overhead at
+ * the expense of O(n) removal for arbitrary elements. New elements can be
+ * added to the list after an existing element or at the head of the list.
+ * Elements being removed from the head of the list should use the explicit
+ * macro for this purpose for optimum efficiency. A singly-linked list may
+ * only be traversed in the forward direction.  Singly-linked lists are ideal
+ * for applications with large datasets and few or no removals or for
+ * implementing a LIFO queue.
+ *
+ * A singly-linked tail queue is headed by a pair of pointers, one to the
+ * head of the list and the other to the tail of the list. The elements are
+ * singly linked for minimum space and pointer manipulation overhead at the
+ * expense of O(n) removal for arbitrary elements. New elements can be added
+ * to the list after an existing element, at the head of the list, or at the
+ * end of the list. Elements being removed from the head of the tail queue
+ * should use the explicit macro for this purpose for optimum efficiency.
+ * A singly-linked tail queue may only be traversed in the forward direction.
+ * Singly-linked tail queues are ideal for applications with large datasets
+ * and few or no removals or for implementing a FIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may be traversed in either direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ *
+ *                              SLIST   LIST    STAILQ  TAILQ
+ * _HEAD                        +       +       +       +
+ * _HEAD_INITIALIZER            +       +       +       +
+ * _ENTRY                       +       +       +       +
+ * _INIT                        +       +       +       +
+ * _EMPTY                       +       +       +       +
+ * _FIRST                       +       +       +       +
+ * _NEXT                        +       +       +       +
+ * _PREV                        -       +       -       +
+ * _LAST                        -       -       +       +
+ * _FOREACH                     +       +       +       +
+ * _FOREACH_FROM                +       +       +       +
+ * _FOREACH_SAFE                +       +       +       +
+ * _FOREACH_FROM_SAFE           +       +       +       +
+ * _FOREACH_REVERSE             -       -       -       +
+ * _FOREACH_REVERSE_FROM        -       -       -       +
+ * _FOREACH_REVERSE_SAFE        -       -       -       +
+ * _FOREACH_REVERSE_FROM_SAFE   -       -       -       +
+ * _INSERT_HEAD                 +       +       +       +
+ * _INSERT_BEFORE               -       +       -       +
+ * _INSERT_AFTER                +       +       +       +
+ * _INSERT_TAIL                 -       -       +       +
+ * _CONCAT                      -       -       +       +
+ * _REMOVE_AFTER                +       -       +       -
+ * _REMOVE_HEAD                 +       -       +       -
+ * _REMOVE                      +       +       +       +
+ * _SWAP                        +       +       +       +
+ *
+ */
+
+/*
+ * Singly-linked List declarations.
+ */
+#define SLIST_HEAD(name, type, qual)                                    \
+    struct name {                                                       \
+        struct type *qual slh_first; /* first element */                \
+    }
+
+#define SLIST_HEAD_INITIALIZER(head)                                    \
+    { NULL }
+
+#define SLIST_ENTRY(type, qual)                                         \
+    struct {                                                            \
+        struct type *qual sle_next;  /* next element */                 \
+    }
+
+/*
+ * Singly-linked List functions.
+ */
+#define SLIST_INIT(head) do {                                           \
+        SLIST_FIRST((head)) = NULL;                                     \
+    } while (0)
+
+#define SLIST_EMPTY(head) ((head)->slh_first == NULL)
+
+#define SLIST_FIRST(head) ((head)->slh_first)
+
+#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
+
+#define SLIST_FOREACH(var, head, field)                                 \
+    for ((var) = SLIST_FIRST((head));                                   \
+         (var);                                                         \
+         (var) = SLIST_NEXT((var), field))
+
+#define SLIST_FOREACH_FROM(var, head, field)                            \
+    for ((var) = ((var) ? (var) : SLIST_FIRST((head)));                 \
+         (var);                                                         \
+         (var) = SLIST_NEXT((var), field))
+
+#define SLIST_FOREACH_SAFE(var, head, field, tvar)                      \
+    for ((var) = SLIST_FIRST((head));                                   \
+         (var) && ((tvar) = SLIST_NEXT((var), field), 1);               \
+         (var) = (tvar))
+
+#define SLIST_FOREACH_FROM_SAFE(var, head, field, tvar)                 \
+    for ((var) = ((var) ? (var) : SLIST_FIRST((head)));                 \
+         (var) && ((tvar) = SLIST_NEXT((var), field), 1);               \
+         (var) = (tvar))
+
+#define SLIST_INSERT_HEAD(head, elm, field) do {                        \
+        SLIST_NEXT((elm), field) = SLIST_FIRST((head));                 \
+        SLIST_FIRST((head)) = (elm);                                    \
+    } while (0)
+
+#define SLIST_INSERT_AFTER(slistelm, elm, field) do {                   \
+        SLIST_NEXT((elm), field) = SLIST_NEXT((slistelm), field);       \
+        SLIST_NEXT((slistelm), field) = (elm);                          \
+    } while (0)
+
+#define SLIST_REMOVE_AFTER(elm, field) do {                             \
+        SLIST_NEXT(elm, field) =                                        \
+            SLIST_NEXT(SLIST_NEXT(elm, field), field);                  \
+    } while (0)
+
+#define SLIST_REMOVE_HEAD(head, field) do {                             \
+        SLIST_FIRST((head)) = SLIST_NEXT(SLIST_FIRST((head)), field);   \
+    } while (0)
+
+#define SLIST_REMOVE(head, elm, type, field) do {                       \
+        if (SLIST_FIRST((head)) == (elm)) {                             \
+            SLIST_REMOVE_HEAD((head), field);                           \
+        }                                                               \
+        else {                                                          \
+            struct type *curelm = SLIST_FIRST((head));                  \
+            while (SLIST_NEXT(curelm, field) != (elm))                  \
+                curelm = SLIST_NEXT(curelm, field);                     \
+            SLIST_REMOVE_AFTER(curelm, field);                          \
+        }                                                               \
+    } while (0)
+
+#define SLIST_SWAP(head1, head2, type) do {                             \
+        struct type *swap_first = SLIST_FIRST(head1);                   \
+        SLIST_FIRST(head1) = SLIST_FIRST(head2);                        \
+        SLIST_FIRST(head2) = swap_first;                                \
+    } while (0)
+
+/*
+ * List declarations.
+ */
+#define LIST_HEAD(name, type, qual)                                     \
+    struct name {                                                       \
+        struct type *qual lh_first;  /* first element */                \
+    }
+
+#define LIST_HEAD_INITIALIZER(head)                                     \
+    { NULL }
+
+#define LIST_ENTRY(type, qual)                                          \
+    struct {                                                            \
+        struct type *qual le_next;   /* next element */                 \
+        struct type *qual *le_prev;  /* address of previous next element */ \
+    }
+
+/*
+ * List functions.
+ */
+#define LIST_INIT(head) do {                                            \
+        LIST_FIRST((head)) = NULL;                                      \
+    } while (0)
+
+#define LIST_EMPTY(head) ((head)->lh_first == NULL)
+
+#define LIST_FIRST(head) ((head)->lh_first)
+
+#define LIST_NEXT(elm, field) ((elm)->field.le_next)
+
+#define LIST_PREV(elm, head, type, field)                               \
+    ((elm)->field.le_prev == &LIST_FIRST((head)) ? NULL :               \
+     QUEUE_CONTAINER_OF((elm)->field.le_prev, struct type, field.le_next))
+
+#define LIST_FOREACH(var, head, field)                                  \
+    for ((var) = LIST_FIRST((head));                                    \
+         (var);                                                         \
+         (var) = LIST_NEXT((var), field))
+
+#define LIST_FOREACH_FROM(var, head, field)                             \
+    for ((var) = ((var) ? (var) : LIST_FIRST((head)));                  \
+         (var);                                                         \
+         (var) = LIST_NEXT((var), field))
+
+#define LIST_FOREACH_SAFE(var, head, field, tvar)                       \
+    for ((var) = LIST_FIRST((head));                                    \
+         (var) && ((tvar) = LIST_NEXT((var), field), 1);                \
+         (var) = (tvar))
+
+#define LIST_FOREACH_FROM_SAFE(var, head, field, tvar)                  \
+    for ((var) = ((var) ? (var) : LIST_FIRST((head)));                  \
+         (var) && ((tvar) = LIST_NEXT((var), field), 1);                \
+         (var) = (tvar))
+
+#define LIST_INSERT_HEAD(head, elm, field) do {                         \
+        if ((LIST_NEXT((elm), field) = LIST_FIRST((head))) != NULL)     \
+            LIST_FIRST((head))->field.le_prev = &LIST_NEXT((elm), field); \
+        LIST_FIRST((head)) = (elm);                                     \
+        (elm)->field.le_prev = &LIST_FIRST((head));                     \
+    } while (0)
+
+#define LIST_INSERT_BEFORE(listelm, elm, field) do {                    \
+        (elm)->field.le_prev = (listelm)->field.le_prev;                \
+        LIST_NEXT((elm), field) = (listelm);                            \
+        *(listelm)->field.le_prev = (elm);                              \
+        (listelm)->field.le_prev = &LIST_NEXT((elm), field);            \
+    } while (0)
+
+#define LIST_INSERT_AFTER(listelm, elm, field) do {                     \
+        if ((LIST_NEXT((elm), field) = LIST_NEXT((listelm), field)) != NULL) \
+            LIST_NEXT((listelm), field)->field.le_prev =                \
+                &LIST_NEXT((elm), field);                               \
+        LIST_NEXT((listelm), field) = (elm);                            \
+        (elm)->field.le_prev = &LIST_NEXT((listelm), field);            \
+    } while (0)
+
+#define LIST_REMOVE(elm, field) do {                                    \
+        if (LIST_NEXT((elm), field) != NULL)                            \
+            LIST_NEXT((elm), field)->field.le_prev =                    \
+                (elm)->field.le_prev;                                   \
+        *(elm)->field.le_prev = LIST_NEXT((elm), field);                \
+    } while (0)
+
+#define LIST_SWAP(head1, head2, type, field) do {                       \
+        struct type *swap_tmp = LIST_FIRST((head1));                    \
+        LIST_FIRST((head1)) = LIST_FIRST((head2));                      \
+        LIST_FIRST((head2)) = swap_tmp;                                 \
+        if ((swap_tmp = LIST_FIRST((head1))) != NULL)                   \
+            swap_tmp->field.le_prev = &LIST_FIRST((head1));             \
+        if ((swap_tmp = LIST_FIRST((head2))) != NULL)                   \
+            swap_tmp->field.le_prev = &LIST_FIRST((head2));             \
+    } while (0)
+
+/*
+ * Singly-linked Tail queue declarations.
+ */
+#define STAILQ_HEAD(name, type, qual)                                   \
+    struct name {                                                       \
+        struct type *qual stqh_first;/* first element */                \
+        struct type *qual *stqh_last;/* addr of last next element */    \
+    }
+
+#define STAILQ_HEAD_INITIALIZER(head)                                   \
+    { NULL, &(head).stqh_first }
+
+#define STAILQ_ENTRY(type, qual)                                        \
+    struct {                                                            \
+        struct type *qual stqe_next; /* next element */                 \
+    }
+
+/*
+ * Singly-linked Tail queue functions.
+ */
+#define STAILQ_INIT(head) do {                                          \
+        STAILQ_FIRST((head)) = NULL;                                    \
+        (head)->stqh_last = &STAILQ_FIRST((head));                      \
+    } while (0)
+
+#define STAILQ_EMPTY(head) ((head)->stqh_first == NULL)
+
+#define STAILQ_FIRST(head) ((head)->stqh_first)
+
+#define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next)
+
+#define STAILQ_LAST(head, type, field)                                  \
+    (STAILQ_EMPTY((head)) ? NULL :                                      \
+     QUEUE_CONTAINER_OF((head)->stqh_last, struct type, field.stqe_next))
+
+#define STAILQ_FOREACH(var, head, field)                                \
+    for((var) = STAILQ_FIRST((head));                                   \
+        (var);                                                          \
+        (var) = STAILQ_NEXT((var), field))
+
+#define STAILQ_FOREACH_FROM(var, head, field)                           \
+    for ((var) = ((var) ? (var) : STAILQ_FIRST((head)));                \
+         (var);                                                         \
+         (var) = STAILQ_NEXT((var), field))
+
+#define STAILQ_FOREACH_SAFE(var, head, field, tvar)                     \
+    for ((var) = STAILQ_FIRST((head));                                  \
+         (var) && ((tvar) = STAILQ_NEXT((var), field), 1);              \
+         (var) = (tvar))
+
+#define STAILQ_FOREACH_FROM_SAFE(var, head, field, tvar)                \
+    for ((var) = ((var) ? (var) : STAILQ_FIRST((head)));                \
+         (var) && ((tvar) = STAILQ_NEXT((var), field), 1);              \
+         (var) = (tvar))
+
+#define STAILQ_INSERT_HEAD(head, elm, field) do {                       \
+        if ((STAILQ_NEXT((elm), field) = STAILQ_FIRST((head))) == NULL) \
+            (head)->stqh_last = &STAILQ_NEXT((elm), field);             \
+        STAILQ_FIRST((head)) = (elm);                                   \
+    } while (0)
+
+#define STAILQ_INSERT_AFTER(head, tqelm, elm, field) do {               \
+        if ((STAILQ_NEXT((elm), field) = STAILQ_NEXT((tqelm), field)) == NULL) \
+            (head)->stqh_last = &STAILQ_NEXT((elm), field);             \
+        STAILQ_NEXT((tqelm), field) = (elm);                            \
+    } while (0)
+
+#define STAILQ_INSERT_TAIL(head, elm, field) do {                       \
+        STAILQ_NEXT((elm), field) = NULL;                               \
+        *(head)->stqh_last = (elm);                                     \
+        (head)->stqh_last = &STAILQ_NEXT((elm), field);                 \
+    } while (0)
+
+#define STAILQ_CONCAT(head1, head2) do {                                \
+        if (!STAILQ_EMPTY((head2))) {                                   \
+            *(head1)->stqh_last = (head2)->stqh_first;                  \
+            (head1)->stqh_last = (head2)->stqh_last;                    \
+            STAILQ_INIT((head2));                                       \
+        }                                                               \
+    } while (0)
+
+#define STAILQ_REMOVE_AFTER(head, elm, field) do {                      \
+        if ((STAILQ_NEXT(elm, field) =                                  \
+             STAILQ_NEXT(STAILQ_NEXT(elm, field), field)) == NULL)      \
+            (head)->stqh_last = &STAILQ_NEXT((elm), field);             \
+    } while (0)
+
+#define STAILQ_REMOVE_HEAD(head, field) do {                            \
+        if ((STAILQ_FIRST((head)) =                                     \
+             STAILQ_NEXT(STAILQ_FIRST((head)), field)) == NULL)         \
+            (head)->stqh_last = &STAILQ_FIRST((head));                  \
+    } while (0)
+
+#define STAILQ_REMOVE(head, elm, type, field) do {                      \
+        if (STAILQ_FIRST((head)) == (elm)) {                            \
+            STAILQ_REMOVE_HEAD((head), field);                          \
+        }                                                               \
+        else {                                                          \
+            struct type *curelm = STAILQ_FIRST((head));                 \
+            while (STAILQ_NEXT(curelm, field) != (elm))                 \
+                curelm = STAILQ_NEXT(curelm, field);                    \
+            STAILQ_REMOVE_AFTER(head, curelm, field);                   \
+        }                                                               \
+    } while (0)
+
+#define STAILQ_SWAP(head1, head2, type) do {                            \
+        struct type *swap_first = STAILQ_FIRST(head1);                  \
+        struct type **swap_last = (head1)->stqh_last;                   \
+        STAILQ_FIRST(head1) = STAILQ_FIRST(head2);                      \
+        (head1)->stqh_last = (head2)->stqh_last;                        \
+        STAILQ_FIRST(head2) = swap_first;                               \
+        (head2)->stqh_last = swap_last;                                 \
+        if (STAILQ_EMPTY(head1))                                        \
+            (head1)->stqh_last = &STAILQ_FIRST(head1);                  \
+        if (STAILQ_EMPTY(head2))                                        \
+            (head2)->stqh_last = &STAILQ_FIRST(head2);                  \
+    } while (0)
+
+/*
+ * Tail queue declarations.
+ */
+#define TAILQ_HEAD(name, type, qual)                                    \
+    struct name {                                                       \
+        struct type *qual tqh_first; /* first element */                \
+        struct type *qual *tqh_last; /* addr of last next element */    \
+}
+
+#define TAILQ_HEAD_INITIALIZER(head)                                    \
+    { NULL, &(head).tqh_first }
+
+#define TAILQ_ENTRY(type, qual)                                         \
+    struct {                                                            \
+        struct type *qual tqe_next;  /* next element */                 \
+        struct type *qual *tqe_prev; /* address of previous next element */ \
+    }
+
+/*
+ * Tail queue functions.
+ */
+#define TAILQ_INIT(head) do {                                           \
+        TAILQ_FIRST((head)) = NULL;                                     \
+        (head)->tqh_last = &TAILQ_FIRST((head));                        \
+    } while (0)
+
+#define TAILQ_EMPTY(head) ((head)->tqh_first == NULL)
+
+#define TAILQ_FIRST(head) ((head)->tqh_first)
+
+#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
+
+#define TAILQ_PREV(elm, headname, field)                                \
+        (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+
+#define TAILQ_LAST(head, headname)                                      \
+    (*(((struct headname *)((head)->tqh_last))->tqh_last))
+
+#define TAILQ_FOREACH(var, head, field)                                 \
+    for ((var) = TAILQ_FIRST((head));                                   \
+         (var);                                                         \
+         (var) = TAILQ_NEXT((var), field))
+
+#define TAILQ_FOREACH_FROM(var, head, field)                            \
+    for ((var) = ((var) ? (var) : TAILQ_FIRST((head)));                 \
+         (var);                                                         \
+         (var) = TAILQ_NEXT((var), field))
+
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar)                      \
+    for ((var) = TAILQ_FIRST((head));                                   \
+         (var) && ((tvar) = TAILQ_NEXT((var), field), 1);               \
+         (var) = (tvar))
+
+#define TAILQ_FOREACH_FROM_SAFE(var, head, field, tvar)                 \
+    for ((var) = ((var) ? (var) : TAILQ_FIRST((head)));                 \
+         (var) && ((tvar) = TAILQ_NEXT((var), field), 1);               \
+         (var) = (tvar))
+
+#define TAILQ_FOREACH_REVERSE(var, head, headname, field)               \
+    for ((var) = TAILQ_LAST((head), headname);                          \
+         (var);                                                         \
+         (var) = TAILQ_PREV((var), headname, field))
+
+#define TAILQ_FOREACH_REVERSE_FROM(var, head, headname, field)          \
+    for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname));        \
+         (var);                                                         \
+         (var) = TAILQ_PREV((var), headname, field))
+
+#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)    \
+    for ((var) = TAILQ_LAST((head), headname);                          \
+         (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);     \
+         (var) = (tvar))
+
+#define TAILQ_FOREACH_REVERSE_FROM_SAFE(var, head, headname, field, tvar) \
+    for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname));        \
+         (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);     \
+         (var) = (tvar))
+
+#define TAILQ_INSERT_HEAD(head, elm, field) do {                        \
+        if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL)   \
+            TAILQ_FIRST((head))->field.tqe_prev =                       \
+                &TAILQ_NEXT((elm), field);                              \
+        else                                                            \
+            (head)->tqh_last = &TAILQ_NEXT((elm), field);               \
+        TAILQ_FIRST((head)) = (elm);                                    \
+        (elm)->field.tqe_prev = &TAILQ_FIRST((head));                   \
+    } while (0)
+
+#define TAILQ_INSERT_BEFORE(listelm, elm, field) do {                   \
+        (elm)->field.tqe_prev = (listelm)->field.tqe_prev;              \
+        TAILQ_NEXT((elm), field) = (listelm);                           \
+        *(listelm)->field.tqe_prev = (elm);                             \
+        (listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field);          \
+    } while (0)
+
+#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do {              \
+        if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL) \
+            TAILQ_NEXT((elm), field)->field.tqe_prev =                  \
+                &TAILQ_NEXT((elm), field);                              \
+        else                                                            \
+            (head)->tqh_last = &TAILQ_NEXT((elm), field);               \
+        TAILQ_NEXT((listelm), field) = (elm);                           \
+        (elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field);          \
+    } while (0)
+
+#define TAILQ_INSERT_TAIL(head, elm, field) do {                        \
+        TAILQ_NEXT((elm), field) = NULL;                                \
+        (elm)->field.tqe_prev = (head)->tqh_last;                       \
+        *(head)->tqh_last = (elm);                                      \
+        (head)->tqh_last = &TAILQ_NEXT((elm), field);                   \
+    } while (0)
+
+#define TAILQ_CONCAT(head1, head2, field) do {                          \
+        if (!TAILQ_EMPTY(head2)) {                                      \
+            *(head1)->tqh_last = (head2)->tqh_first;                    \
+            (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last;     \
+            (head1)->tqh_last = (head2)->tqh_last;                      \
+            TAILQ_INIT((head2));                                        \
+        }                                                               \
+    } while (0)
+
+#define TAILQ_REMOVE(head, elm, field) do {                             \
+        if ((TAILQ_NEXT((elm), field)) != NULL)                         \
+            TAILQ_NEXT((elm), field)->field.tqe_prev =                  \
+                (elm)->field.tqe_prev;                                  \
+        else                                                            \
+            (head)->tqh_last = (elm)->field.tqe_prev;                   \
+        *(elm)->field.tqe_prev = TAILQ_NEXT((elm), field);              \
+    } while (0)
+
+#define TAILQ_SWAP(head1, head2, type, field) do {                      \
+        struct type *swap_first = (head1)->tqh_first;                   \
+        struct type **swap_last = (head1)->tqh_last;                    \
+        (head1)->tqh_first = (head2)->tqh_first;                        \
+        (head1)->tqh_last = (head2)->tqh_last;                          \
+        (head2)->tqh_first = swap_first;                                \
+        (head2)->tqh_last = swap_last;                                  \
+        if ((swap_first = (head1)->tqh_first) != NULL)                  \
+            swap_first->field.tqe_prev = &(head1)->tqh_first;           \
+        else                                                            \
+            (head1)->tqh_last = &(head1)->tqh_first;                    \
+        if ((swap_first = (head2)->tqh_first) != NULL)                  \
+            swap_first->field.tqe_prev = &(head2)->tqh_first;           \
+        else                                                            \
+            (head2)->tqh_last = &(head2)->tqh_first;                    \
+    } while (0)
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/bsd/tree.h b/app/src/main/cpp/shadowhook/third_party/bsd/tree.h
new file mode 100644
index 0000000..e6db6a9
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/bsd/tree.h
@@ -0,0 +1,759 @@
+/*-
+ * Copyright 2002 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TREE_H
+#define TREE_H
+
+/*
+ * This file defines data structures for different types of trees:
+ * splay trees and red-black trees.
+ *
+ * A splay tree is a self-organizing data structure.  Every operation
+ * on the tree causes a splay to happen.  The splay moves the requested
+ * node to the root of the tree and partly rebalances it.
+ *
+ * This has the benefit that request locality causes faster lookups as
+ * the requested nodes move to the top of the tree.  On the other hand,
+ * every lookup causes memory writes.
+ *
+ * The Balance Theorem bounds the total access time for m operations
+ * and n inserts on an initially empty tree as O((m + n)lg n).  The
+ * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
+ *
+ * A red-black tree is a binary search tree with the node color as an
+ * extra attribute.  It fulfills a set of conditions:
+ *      - every search path from the root to a leaf consists of the
+ *        same number of black nodes,
+ *      - each red node (except for the root) has a black parent,
+ *      - each leaf node is black.
+ *
+ * Every operation on a red-black tree is bounded as O(lg n).
+ * The maximum height of a red-black tree is 2lg (n+1).
+ */
+
+#define SPLAY_HEAD(name, type)                                          \
+struct name {                                                           \
+        struct type *sph_root; /* root of the tree */                   \
+}
+
+#define SPLAY_INITIALIZER(root)                                         \
+        { NULL }
+
+#define SPLAY_INIT(root) do {                                           \
+        (root)->sph_root = NULL;                                        \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ENTRY(type)                                               \
+struct {                                                                \
+        struct type *spe_left; /* left element */                       \
+        struct type *spe_right; /* right element */                     \
+}
+
+#define SPLAY_LEFT(elm, field)          (elm)->field.spe_left
+#define SPLAY_RIGHT(elm, field)         (elm)->field.spe_right
+#define SPLAY_ROOT(head)                (head)->sph_root
+#define SPLAY_EMPTY(head)               (SPLAY_ROOT(head) == NULL)
+
+/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
+#define SPLAY_ROTATE_RIGHT(head, tmp, field) do {                       \
+        SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field);  \
+        SPLAY_RIGHT(tmp, field) = (head)->sph_root;                     \
+        (head)->sph_root = tmp;                                         \
+} while (/*CONSTCOND*/ 0)
+        
+#define SPLAY_ROTATE_LEFT(head, tmp, field) do {                        \
+        SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field);  \
+        SPLAY_LEFT(tmp, field) = (head)->sph_root;                      \
+        (head)->sph_root = tmp;                                         \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKLEFT(head, tmp, field) do {                           \
+        SPLAY_LEFT(tmp, field) = (head)->sph_root;                      \
+        tmp = (head)->sph_root;                                         \
+        (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);         \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKRIGHT(head, tmp, field) do {                          \
+        SPLAY_RIGHT(tmp, field) = (head)->sph_root;                     \
+        tmp = (head)->sph_root;                                         \
+        (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);        \
+} while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ASSEMBLE(head, node, left, right, field) do {             \
+        SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \
+        SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\
+        SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \
+        SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \
+} while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+
+#define SPLAY_PROTOTYPE(name, type, field, cmp)                         \
+void name##_SPLAY(struct name *, struct type *);                        \
+void name##_SPLAY_MINMAX(struct name *, int);                           \
+struct type *name##_SPLAY_INSERT(struct name *, struct type *);         \
+struct type *name##_SPLAY_REMOVE(struct name *, struct type *);         \
+                                                                        \
+/* Finds the node with the same key as elm */                           \
+static __inline struct type *                                           \
+name##_SPLAY_FIND(struct name *head, struct type *elm)                  \
+{                                                                       \
+        if (SPLAY_EMPTY(head))                                          \
+                return(NULL);                                           \
+        name##_SPLAY(head, elm);                                        \
+        if ((cmp)(elm, (head)->sph_root) == 0)                          \
+                return (head->sph_root);                                \
+        return (NULL);                                                  \
+}                                                                       \
+                                                                        \
+static __inline struct type *                                          \
+name##_SPLAY_NEXT(struct name *head, struct type *elm)                 \
+{                                                                       \
+        name##_SPLAY(head, elm);                                        \
+        if (SPLAY_RIGHT(elm, field) != NULL) {                          \
+                elm = SPLAY_RIGHT(elm, field);                          \
+                while (SPLAY_LEFT(elm, field) != NULL) {                \
+                        elm = SPLAY_LEFT(elm, field);                   \
+                }                                                       \
+        } else                                                          \
+                elm = NULL;                                             \
+        return (elm);                                                   \
+}                                                                       \
+                                                                        \
+static __inline struct type *                                           \
+name##_SPLAY_MIN_MAX(struct name *head, int val)                        \
+{                                                                       \
+        name##_SPLAY_MINMAX(head, val);                                 \
+        return (SPLAY_ROOT(head));                                      \
+}
+
+/* Main splay operation.
+ * Moves node close to the key of elm to top
+ */
+#define SPLAY_GENERATE(name, type, field, cmp)                          \
+struct type *                                                           \
+name##_SPLAY_INSERT(struct name *head, struct type *elm)                \
+{                                                                       \
+    if (SPLAY_EMPTY(head)) {                                            \
+            SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL;    \
+    } else {                                                            \
+            int __comp;                                                 \
+            name##_SPLAY(head, elm);                                    \
+            __comp = (cmp)(elm, (head)->sph_root);                      \
+            if(__comp < 0) {                                            \
+                    SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field);\
+                    SPLAY_RIGHT(elm, field) = (head)->sph_root;         \
+                    SPLAY_LEFT((head)->sph_root, field) = NULL;         \
+            } else if (__comp > 0) {                                    \
+                    SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field);\
+                    SPLAY_LEFT(elm, field) = (head)->sph_root;          \
+                    SPLAY_RIGHT((head)->sph_root, field) = NULL;        \
+            } else                                                      \
+                    return ((head)->sph_root);                          \
+    }                                                                   \
+    (head)->sph_root = (elm);                                           \
+    return (NULL);                                                      \
+}                                                                       \
+                                                                        \
+struct type *                                                           \
+name##_SPLAY_REMOVE(struct name *head, struct type *elm)                \
+{                                                                       \
+        struct type *__tmp;                                             \
+        if (SPLAY_EMPTY(head))                                          \
+                return (NULL);                                          \
+        name##_SPLAY(head, elm);                                        \
+        if ((cmp)(elm, (head)->sph_root) == 0) {                        \
+                if (SPLAY_LEFT((head)->sph_root, field) == NULL) {      \
+                        (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);\
+                } else {                                                \
+                        __tmp = SPLAY_RIGHT((head)->sph_root, field);   \
+                        (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\
+                        name##_SPLAY(head, elm);                        \
+                        SPLAY_RIGHT((head)->sph_root, field) = __tmp;   \
+                }                                                       \
+                return (elm);                                           \
+        }                                                               \
+        return (NULL);                                                  \
+}                                                                       \
+                                                                        \
+void                                                                    \
+name##_SPLAY(struct name *head, struct type *elm)                       \
+{                                                                       \
+        struct type __node, *__left, *__right, *__tmp;                  \
+        int __comp;                                                     \
+\
+        SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
+        __left = __right = &__node;                                     \
+\
+        while ((__comp = (cmp)(elm, (head)->sph_root)) != 0) {          \
+                if (__comp < 0) {                                       \
+                        __tmp = SPLAY_LEFT((head)->sph_root, field);    \
+                        if (__tmp == NULL)                              \
+                                break;                                  \
+                        if ((cmp)(elm, __tmp) < 0){                     \
+                                SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+                                if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
+                                        break;                          \
+                        }                                               \
+                        SPLAY_LINKLEFT(head, __right, field);           \
+                } else if (__comp > 0) {                                \
+                        __tmp = SPLAY_RIGHT((head)->sph_root, field);   \
+                        if (__tmp == NULL)                              \
+                                break;                                  \
+                        if ((cmp)(elm, __tmp) > 0){                     \
+                                SPLAY_ROTATE_LEFT(head, __tmp, field);  \
+                                if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
+                                        break;                          \
+                        }                                               \
+                        SPLAY_LINKRIGHT(head, __left, field);           \
+                }                                                       \
+        }                                                               \
+        SPLAY_ASSEMBLE(head, &__node, __left, __right, field);          \
+}                                                                       \
+                                                                        \
+/* Splay with either the minimum or the maximum element                 \
+ * Used to find minimum or maximum element in tree.                     \
+ */                                                                     \
+void name##_SPLAY_MINMAX(struct name *head, int __comp) \
+{                                                                       \
+        struct type __node, *__left, *__right, *__tmp;                  \
+\
+        SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\
+        __left = __right = &__node;                                     \
+\
+        while (1) {                                                     \
+                if (__comp < 0) {                                       \
+                        __tmp = SPLAY_LEFT((head)->sph_root, field);    \
+                        if (__tmp == NULL)                              \
+                                break;                                  \
+                        if (__comp < 0){                                \
+                                SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+                                if (SPLAY_LEFT((head)->sph_root, field) == NULL)\
+                                        break;                          \
+                        }                                               \
+                        SPLAY_LINKLEFT(head, __right, field);           \
+                } else if (__comp > 0) {                                \
+                        __tmp = SPLAY_RIGHT((head)->sph_root, field);   \
+                        if (__tmp == NULL)                              \
+                                break;                                  \
+                        if (__comp > 0) {                               \
+                                SPLAY_ROTATE_LEFT(head, __tmp, field);  \
+                                if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\
+                                        break;                          \
+                        }                                               \
+                        SPLAY_LINKRIGHT(head, __left, field);           \
+                }                                                       \
+        }                                                               \
+        SPLAY_ASSEMBLE(head, &__node, __left, __right, field);          \
+}
+
+#define SPLAY_NEGINF    -1
+#define SPLAY_INF       1
+
+#define SPLAY_INSERT(name, x, y)        name##_SPLAY_INSERT(x, y)
+#define SPLAY_REMOVE(name, x, y)        name##_SPLAY_REMOVE(x, y)
+#define SPLAY_FIND(name, x, y)          name##_SPLAY_FIND(x, y)
+#define SPLAY_NEXT(name, x, y)          name##_SPLAY_NEXT(x, y)
+#define SPLAY_MIN(name, x)              (SPLAY_EMPTY(x) ? NULL  \
+                                        : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
+#define SPLAY_MAX(name, x)              (SPLAY_EMPTY(x) ? NULL  \
+                                        : name##_SPLAY_MIN_MAX(x, SPLAY_INF))
+
+#define SPLAY_FOREACH(x, name, head)                                    \
+        for ((x) = SPLAY_MIN(name, head);                               \
+             (x) != NULL;                                               \
+             (x) = SPLAY_NEXT(name, head, x))
+
+/* Macros that define a red-black tree */
+#define RB_HEAD(name, type)                                             \
+struct name {                                                           \
+        struct type *rbh_root; /* root of the tree */                   \
+}
+
+#define RB_INITIALIZER(root)                                            \
+        { NULL }
+
+#define RB_INIT(root) do {                                              \
+        (root)->rbh_root = NULL;                                        \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_BLACK        0
+#define RB_RED          1
+#define RB_ENTRY(type)                                                  \
+struct {                                                                \
+        struct type *rbe_left;          /* left element */              \
+        struct type *rbe_right;         /* right element */             \
+        struct type *rbe_parent;        /* parent element */            \
+        int rbe_color;                  /* node color */                \
+}
+
+#define RB_LEFT(elm, field)             (elm)->field.rbe_left
+#define RB_RIGHT(elm, field)            (elm)->field.rbe_right
+#define RB_PARENT(elm, field)           (elm)->field.rbe_parent
+#define RB_COLOR(elm, field)            (elm)->field.rbe_color
+#define RB_ROOT(head)                   (head)->rbh_root
+#define RB_EMPTY(head)                  (RB_ROOT(head) == NULL)
+
+#define RB_SET(elm, parent, field) do {                                 \
+        RB_PARENT(elm, field) = parent;                                 \
+        RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL;              \
+        RB_COLOR(elm, field) = RB_RED;                                  \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_SET_BLACKRED(black, red, field) do {                         \
+        RB_COLOR(black, field) = RB_BLACK;                              \
+        RB_COLOR(red, field) = RB_RED;                                  \
+} while (/*CONSTCOND*/ 0)
+
+#ifndef RB_AUGMENT
+#define RB_AUGMENT(x)   do {} while (0)
+#endif
+
+#define RB_ROTATE_LEFT(head, elm, tmp, field) do {                      \
+        (tmp) = RB_RIGHT(elm, field);                                   \
+        if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field)) != NULL) {     \
+                RB_PARENT(RB_LEFT(tmp, field), field) = (elm);          \
+        }                                                               \
+        RB_AUGMENT(elm);                                                \
+        if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) {  \
+                if ((elm) == RB_LEFT(RB_PARENT(elm, field), field))     \
+                        RB_LEFT(RB_PARENT(elm, field), field) = (tmp);  \
+                else                                                    \
+                        RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+        } else                                                          \
+                (head)->rbh_root = (tmp);                               \
+        RB_LEFT(tmp, field) = (elm);                                    \
+        RB_PARENT(elm, field) = (tmp);                                  \
+        RB_AUGMENT(tmp);                                                \
+        if ((RB_PARENT(tmp, field)))                                    \
+                RB_AUGMENT(RB_PARENT(tmp, field));                      \
+} while (/*CONSTCOND*/ 0)
+
+#define RB_ROTATE_RIGHT(head, elm, tmp, field) do {                     \
+        (tmp) = RB_LEFT(elm, field);                                    \
+        if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field)) != NULL) {     \
+                RB_PARENT(RB_RIGHT(tmp, field), field) = (elm);         \
+        }                                                               \
+        RB_AUGMENT(elm);                                                \
+        if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) {  \
+                if ((elm) == RB_LEFT(RB_PARENT(elm, field), field))     \
+                        RB_LEFT(RB_PARENT(elm, field), field) = (tmp);  \
+                else                                                    \
+                        RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+        } else                                                          \
+                (head)->rbh_root = (tmp);                               \
+        RB_RIGHT(tmp, field) = (elm);                                   \
+        RB_PARENT(elm, field) = (tmp);                                  \
+        RB_AUGMENT(tmp);                                                \
+        if ((RB_PARENT(tmp, field)))                                    \
+                RB_AUGMENT(RB_PARENT(tmp, field));                      \
+} while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+#define RB_PROTOTYPE(name, type, field, cmp)                            \
+        RB_PROTOTYPE_INTERNAL(name, type, field, cmp,)
+#define RB_PROTOTYPE_STATIC(name, type, field, cmp)                     \
+        RB_PROTOTYPE_INTERNAL(name, type, field, cmp, static)
+#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr)             \
+attr void name##_RB_INSERT_COLOR(struct name *, struct type *);         \
+attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\
+attr struct type *name##_RB_REMOVE(struct name *, struct type *);       \
+attr struct type *name##_RB_INSERT(struct name *, struct type *);       \
+attr struct type *name##_RB_FIND(struct name *, struct type *);         \
+attr struct type *name##_RB_NFIND(struct name *, struct type *);        \
+attr struct type *name##_RB_NEXT(struct type *);                        \
+attr struct type *name##_RB_PREV(struct type *);                        \
+attr struct type *name##_RB_MINMAX(struct name *, int);                 \
+                                                                        \
+
+/* Main rb operation.
+ * Moves node close to the key of elm to top
+ */
+#define RB_GENERATE(name, type, field, cmp)                             \
+        RB_GENERATE_INTERNAL(name, type, field, cmp,)
+#define RB_GENERATE_STATIC(name, type, field, cmp)                      \
+        RB_GENERATE_INTERNAL(name, type, field, cmp, static)
+#define RB_GENERATE_INTERNAL(name, type, field, cmp, attr)              \
+attr void                                                               \
+name##_RB_INSERT_COLOR(struct name *head, struct type *elm)             \
+{                                                                       \
+        struct type *parent, *gparent, *tmp;                            \
+        while ((parent = RB_PARENT(elm, field)) != NULL &&              \
+            RB_COLOR(parent, field) == RB_RED) {                        \
+                gparent = RB_PARENT(parent, field);                     \
+                if (parent == RB_LEFT(gparent, field)) {                \
+                        tmp = RB_RIGHT(gparent, field);                 \
+                        if (tmp && RB_COLOR(tmp, field) == RB_RED) {    \
+                                RB_COLOR(tmp, field) = RB_BLACK;        \
+                                RB_SET_BLACKRED(parent, gparent, field);\
+                                elm = gparent;                          \
+                                continue;                               \
+                        }                                               \
+                        if (RB_RIGHT(parent, field) == elm) {           \
+                                RB_ROTATE_LEFT(head, parent, tmp, field);\
+                                tmp = parent;                           \
+                                parent = elm;                           \
+                                elm = tmp;                              \
+                        }                                               \
+                        RB_SET_BLACKRED(parent, gparent, field);        \
+                        RB_ROTATE_RIGHT(head, gparent, tmp, field);     \
+                } else {                                                \
+                        tmp = RB_LEFT(gparent, field);                  \
+                        if (tmp && RB_COLOR(tmp, field) == RB_RED) {    \
+                                RB_COLOR(tmp, field) = RB_BLACK;        \
+                                RB_SET_BLACKRED(parent, gparent, field);\
+                                elm = gparent;                          \
+                                continue;                               \
+                        }                                               \
+                        if (RB_LEFT(parent, field) == elm) {            \
+                                RB_ROTATE_RIGHT(head, parent, tmp, field);\
+                                tmp = parent;                           \
+                                parent = elm;                           \
+                                elm = tmp;                              \
+                        }                                               \
+                        RB_SET_BLACKRED(parent, gparent, field);        \
+                        RB_ROTATE_LEFT(head, gparent, tmp, field);      \
+                }                                                       \
+        }                                                               \
+        RB_COLOR(head->rbh_root, field) = RB_BLACK;                     \
+}                                                                       \
+                                                                        \
+attr void                                                               \
+name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm) \
+{                                                                       \
+        struct type *tmp;                                               \
+        while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) &&     \
+            elm != RB_ROOT(head)) {                                     \
+                if (RB_LEFT(parent, field) == elm) {                    \
+                        tmp = RB_RIGHT(parent, field);                  \
+                        if (RB_COLOR(tmp, field) == RB_RED) {           \
+                                RB_SET_BLACKRED(tmp, parent, field);    \
+                                RB_ROTATE_LEFT(head, parent, tmp, field);\
+                                tmp = RB_RIGHT(parent, field);          \
+                        }                                               \
+                        if ((RB_LEFT(tmp, field) == NULL ||             \
+                            RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
+                            (RB_RIGHT(tmp, field) == NULL ||            \
+                            RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\
+                                RB_COLOR(tmp, field) = RB_RED;          \
+                                elm = parent;                           \
+                                parent = RB_PARENT(elm, field);         \
+                        } else {                                        \
+                                if (RB_RIGHT(tmp, field) == NULL ||     \
+                                    RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) {\
+                                        struct type *oleft;             \
+                                        if ((oleft = RB_LEFT(tmp, field)) \
+                                            != NULL)                    \
+                                                RB_COLOR(oleft, field) = RB_BLACK;\
+                                        RB_COLOR(tmp, field) = RB_RED;  \
+                                        RB_ROTATE_RIGHT(head, tmp, oleft, field);\
+                                        tmp = RB_RIGHT(parent, field);  \
+                                }                                       \
+                                RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
+                                RB_COLOR(parent, field) = RB_BLACK;     \
+                                if (RB_RIGHT(tmp, field))               \
+                                        RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK;\
+                                RB_ROTATE_LEFT(head, parent, tmp, field);\
+                                elm = RB_ROOT(head);                    \
+                                break;                                  \
+                        }                                               \
+                } else {                                                \
+                        tmp = RB_LEFT(parent, field);                   \
+                        if (RB_COLOR(tmp, field) == RB_RED) {           \
+                                RB_SET_BLACKRED(tmp, parent, field);    \
+                                RB_ROTATE_RIGHT(head, parent, tmp, field);\
+                                tmp = RB_LEFT(parent, field);           \
+                        }                                               \
+                        if ((RB_LEFT(tmp, field) == NULL ||             \
+                            RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\
+                            (RB_RIGHT(tmp, field) == NULL ||            \
+                            RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\
+                                RB_COLOR(tmp, field) = RB_RED;          \
+                                elm = parent;                           \
+                                parent = RB_PARENT(elm, field);         \
+                        } else {                                        \
+                                if (RB_LEFT(tmp, field) == NULL ||      \
+                                    RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) {\
+                                        struct type *oright;            \
+                                        if ((oright = RB_RIGHT(tmp, field)) \
+                                            != NULL)                    \
+                                                RB_COLOR(oright, field) = RB_BLACK;\
+                                        RB_COLOR(tmp, field) = RB_RED;  \
+                                        RB_ROTATE_LEFT(head, tmp, oright, field);\
+                                        tmp = RB_LEFT(parent, field);   \
+                                }                                       \
+                                RB_COLOR(tmp, field) = RB_COLOR(parent, field);\
+                                RB_COLOR(parent, field) = RB_BLACK;     \
+                                if (RB_LEFT(tmp, field))                \
+                                        RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK;\
+                                RB_ROTATE_RIGHT(head, parent, tmp, field);\
+                                elm = RB_ROOT(head);                    \
+                                break;                                  \
+                        }                                               \
+                }                                                       \
+        }                                                               \
+        if (elm)                                                        \
+                RB_COLOR(elm, field) = RB_BLACK;                        \
+}                                                                       \
+                                                                        \
+attr struct type *                                                      \
+name##_RB_REMOVE(struct name *head, struct type *elm)                   \
+{                                                                       \
+        struct type *child, *parent, *old = elm;                        \
+        int color;                                                      \
+        if (RB_LEFT(elm, field) == NULL)                                \
+                child = RB_RIGHT(elm, field);                           \
+        else if (RB_RIGHT(elm, field) == NULL)                          \
+                child = RB_LEFT(elm, field);                            \
+        else {                                                          \
+                struct type *left;                                      \
+                elm = RB_RIGHT(elm, field);                             \
+                while ((left = RB_LEFT(elm, field)) != NULL)            \
+                        elm = left;                                     \
+                child = RB_RIGHT(elm, field);                           \
+                parent = RB_PARENT(elm, field);                         \
+                color = RB_COLOR(elm, field);                           \
+                if (child)                                              \
+                        RB_PARENT(child, field) = parent;               \
+                if (parent) {                                           \
+                        if (RB_LEFT(parent, field) == elm)              \
+                                RB_LEFT(parent, field) = child;         \
+                        else                                            \
+                                RB_RIGHT(parent, field) = child;        \
+                        RB_AUGMENT(parent);                             \
+                } else                                                  \
+                        RB_ROOT(head) = child;                          \
+                if (RB_PARENT(elm, field) == old)                       \
+                        parent = elm;                                   \
+                (elm)->field = (old)->field;                            \
+                if (RB_PARENT(old, field)) {                            \
+                        if (RB_LEFT(RB_PARENT(old, field), field) == old)\
+                                RB_LEFT(RB_PARENT(old, field), field) = elm;\
+                        else                                            \
+                                RB_RIGHT(RB_PARENT(old, field), field) = elm;\
+                        RB_AUGMENT(RB_PARENT(old, field));              \
+                } else                                                  \
+                        RB_ROOT(head) = elm;                            \
+                RB_PARENT(RB_LEFT(old, field), field) = elm;            \
+                if (RB_RIGHT(old, field))                               \
+                        RB_PARENT(RB_RIGHT(old, field), field) = elm;   \
+                if (parent) {                                           \
+                        left = parent;                                  \
+                        do {                                            \
+                                RB_AUGMENT(left);                       \
+                        } while ((left = RB_PARENT(left, field)) != NULL); \
+                }                                                       \
+                goto color;                                             \
+        }                                                               \
+        parent = RB_PARENT(elm, field);                                 \
+        color = RB_COLOR(elm, field);                                   \
+        if (child)                                                      \
+                RB_PARENT(child, field) = parent;                       \
+        if (parent) {                                                   \
+                if (RB_LEFT(parent, field) == elm)                      \
+                        RB_LEFT(parent, field) = child;                 \
+                else                                                    \
+                        RB_RIGHT(parent, field) = child;                \
+                RB_AUGMENT(parent);                                     \
+        } else                                                          \
+                RB_ROOT(head) = child;                                  \
+color:                                                                  \
+        if (color == RB_BLACK)                                          \
+                name##_RB_REMOVE_COLOR(head, parent, child);            \
+        return (old);                                                   \
+}                                                                       \
+                                                                        \
+/* Inserts a node into the RB tree */                                   \
+attr struct type *                                                      \
+name##_RB_INSERT(struct name *head, struct type *elm)                   \
+{                                                                       \
+        struct type *tmp;                                               \
+        struct type *parent = NULL;                                     \
+        int comp = 0;                                                   \
+        tmp = RB_ROOT(head);                                            \
+        while (tmp) {                                                   \
+                parent = tmp;                                           \
+                comp = (cmp)(elm, parent);                              \
+                if (comp < 0)                                           \
+                        tmp = RB_LEFT(tmp, field);                      \
+                else if (comp > 0)                                      \
+                        tmp = RB_RIGHT(tmp, field);                     \
+                else                                                    \
+                        return (tmp);                                   \
+        }                                                               \
+        RB_SET(elm, parent, field);                                     \
+        if (parent != NULL) {                                           \
+                if (comp < 0)                                           \
+                        RB_LEFT(parent, field) = elm;                   \
+                else                                                    \
+                        RB_RIGHT(parent, field) = elm;                  \
+                RB_AUGMENT(parent);                                     \
+        } else                                                          \
+                RB_ROOT(head) = elm;                                    \
+        name##_RB_INSERT_COLOR(head, elm);                              \
+        return (NULL);                                                  \
+}                                                                       \
+                                                                        \
+/* Finds the node with the same key as elm */                           \
+attr struct type *                                                      \
+name##_RB_FIND(struct name *head, struct type *elm)                     \
+{                                                                       \
+        struct type *tmp = RB_ROOT(head);                               \
+        int comp;                                                       \
+        while (tmp) {                                                   \
+                comp = cmp(elm, tmp);                                   \
+                if (comp < 0)                                           \
+                        tmp = RB_LEFT(tmp, field);                      \
+                else if (comp > 0)                                      \
+                        tmp = RB_RIGHT(tmp, field);                     \
+                else                                                    \
+                        return (tmp);                                   \
+        }                                                               \
+        return (NULL);                                                  \
+}                                                                       \
+                                                                        \
+/* Finds the first node greater than or equal to the search key */      \
+attr struct type *                                                      \
+name##_RB_NFIND(struct name *head, struct type *elm)                    \
+{                                                                       \
+        struct type *tmp = RB_ROOT(head);                               \
+        struct type *res = NULL;                                        \
+        int comp;                                                       \
+        while (tmp) {                                                   \
+                comp = cmp(elm, tmp);                                   \
+                if (comp < 0) {                                         \
+                        res = tmp;                                      \
+                        tmp = RB_LEFT(tmp, field);                      \
+                }                                                       \
+                else if (comp > 0)                                      \
+                        tmp = RB_RIGHT(tmp, field);                     \
+                else                                                    \
+                        return (tmp);                                   \
+        }                                                               \
+        return (res);                                                   \
+}                                                                       \
+                                                                        \
+/* ARGSUSED */                                                          \
+attr struct type *                                                      \
+name##_RB_NEXT(struct type *elm)                                        \
+{                                                                       \
+        if (RB_RIGHT(elm, field)) {                                     \
+                elm = RB_RIGHT(elm, field);                             \
+                while (RB_LEFT(elm, field))                             \
+                        elm = RB_LEFT(elm, field);                      \
+        } else {                                                        \
+                if (RB_PARENT(elm, field) &&                            \
+                    (elm == RB_LEFT(RB_PARENT(elm, field), field)))     \
+                        elm = RB_PARENT(elm, field);                    \
+                else {                                                  \
+                        while (RB_PARENT(elm, field) &&                 \
+                            (elm == RB_RIGHT(RB_PARENT(elm, field), field)))\
+                                elm = RB_PARENT(elm, field);            \
+                        elm = RB_PARENT(elm, field);                    \
+                }                                                       \
+        }                                                               \
+        return (elm);                                                   \
+}                                                                       \
+                                                                        \
+/* ARGSUSED */                                                          \
+attr struct type *                                                      \
+name##_RB_PREV(struct type *elm)                                        \
+{                                                                       \
+        if (RB_LEFT(elm, field)) {                                      \
+                elm = RB_LEFT(elm, field);                              \
+                while (RB_RIGHT(elm, field))                            \
+                        elm = RB_RIGHT(elm, field);                     \
+        } else {                                                        \
+                if (RB_PARENT(elm, field) &&                            \
+                    (elm == RB_RIGHT(RB_PARENT(elm, field), field)))    \
+                        elm = RB_PARENT(elm, field);                    \
+                else {                                                  \
+                        while (RB_PARENT(elm, field) &&                 \
+                            (elm == RB_LEFT(RB_PARENT(elm, field), field)))\
+                                elm = RB_PARENT(elm, field);            \
+                        elm = RB_PARENT(elm, field);                    \
+                }                                                       \
+        }                                                               \
+        return (elm);                                                   \
+}                                                                       \
+                                                                        \
+attr struct type *                                                      \
+name##_RB_MINMAX(struct name *head, int val)                            \
+{                                                                       \
+        struct type *tmp = RB_ROOT(head);                               \
+        struct type *parent = NULL;                                     \
+        while (tmp) {                                                   \
+                parent = tmp;                                           \
+                if (val < 0)                                            \
+                        tmp = RB_LEFT(tmp, field);                      \
+                else                                                    \
+                        tmp = RB_RIGHT(tmp, field);                     \
+        }                                                               \
+        return (parent);                                                \
+}
+
+#define RB_NEGINF       -1
+#define RB_INF  1
+
+#define RB_INSERT(name, x, y)   name##_RB_INSERT(x, y)
+#define RB_REMOVE(name, x, y)   name##_RB_REMOVE(x, y)
+#define RB_FIND(name, x, y)     name##_RB_FIND(x, y)
+#define RB_NFIND(name, x, y)    name##_RB_NFIND(x, y)
+#define RB_NEXT(name, x, y)     name##_RB_NEXT(y)
+#define RB_PREV(name, x, y)     name##_RB_PREV(y)
+#define RB_MIN(name, x)         name##_RB_MINMAX(x, RB_NEGINF)
+#define RB_MAX(name, x)         name##_RB_MINMAX(x, RB_INF)
+
+#define RB_FOREACH(x, name, head)                                       \
+        for ((x) = RB_MIN(name, head);                                  \
+             (x) != NULL;                                               \
+             (x) = name##_RB_NEXT(x))
+
+#define RB_FOREACH_FROM(x, name, y)                                     \
+        for ((x) = (y);                                                 \
+            ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL);    \
+             (x) = (y))
+
+#define RB_FOREACH_SAFE(x, name, head, y)                               \
+        for ((x) = RB_MIN(name, head);                                  \
+            ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL);    \
+             (x) = (y))
+
+#define RB_FOREACH_REVERSE(x, name, head)                               \
+        for ((x) = RB_MAX(name, head);                                  \
+             (x) != NULL;                                               \
+             (x) = name##_RB_PREV(x))
+
+#define RB_FOREACH_REVERSE_FROM(x, name, y)                             \
+        for ((x) = (y);                                                 \
+            ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL);    \
+             (x) = (y))
+
+#define RB_FOREACH_REVERSE_SAFE(x, name, head, y)                       \
+        for ((x) = RB_MAX(name, head);                                  \
+            ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL);    \
+             (x) = (y))
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/lss/LICENSE b/app/src/main/cpp/shadowhook/third_party/lss/LICENSE
new file mode 100644
index 0000000..58ab3fb
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/lss/LICENSE
@@ -0,0 +1,28 @@
+Copyright (c) 2005-2011, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/app/src/main/cpp/shadowhook/third_party/lss/linux_syscall_support.h b/app/src/main/cpp/shadowhook/third_party/lss/linux_syscall_support.h
new file mode 100644
index 0000000..d3791cd
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/lss/linux_syscall_support.h
@@ -0,0 +1,4867 @@
+/* Copyright (c) 2005-2011, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ---
+ * Author: Markus Gutschke
+ */
+
+/* This file includes Linux-specific support functions common to the
+ * coredumper and the thread lister; primarily, this is a collection
+ * of direct system calls, and a couple of symbols missing from
+ * standard header files.
+ * There are a few options that the including file can set to control
+ * the behavior of this file:
+ *
+ * SYS_CPLUSPLUS:
+ *   The entire header file will normally be wrapped in 'extern "C" { }",
+ *   making it suitable for compilation as both C and C++ source. If you
+ *   do not want to do this, you can set the SYS_CPLUSPLUS macro to inhibit
+ *   the wrapping. N.B. doing so will suppress inclusion of all prerequisite
+ *   system header files, too. It is the caller's responsibility to provide
+ *   the necessary definitions.
+ *
+ * SYS_ERRNO:
+ *   All system calls will update "errno" unless overriden by setting the
+ *   SYS_ERRNO macro prior to including this file. SYS_ERRNO should be
+ *   an l-value.
+ *
+ * SYS_INLINE:
+ *   New symbols will be defined "static inline", unless overridden by
+ *   the SYS_INLINE macro.
+ *
+ * SYS_LINUX_SYSCALL_SUPPORT_H
+ *   This macro is used to avoid multiple inclusions of this header file.
+ *   If you need to include this file more than once, make sure to
+ *   unset SYS_LINUX_SYSCALL_SUPPORT_H before each inclusion.
+ *
+ * SYS_PREFIX:
+ *   New system calls will have a prefix of "sys_" unless overridden by
+ *   the SYS_PREFIX macro. Valid values for this macro are [0..9] which
+ *   results in prefixes "sys[0..9]_". It is also possible to set this
+ *   macro to -1, which avoids all prefixes.
+ *
+ * SYS_SYSCALL_ENTRYPOINT:
+ *   Some applications (such as sandboxes that filter system calls), need
+ *   to be able to run custom-code each time a system call is made. If this
+ *   macro is defined, it expands to the name of a "common" symbol. If
+ *   this symbol is assigned a non-NULL pointer value, it is used as the
+ *   address of the system call entrypoint.
+ *   A pointer to this symbol can be obtained by calling
+ *   get_syscall_entrypoint()
+ *
+ * This file defines a few internal symbols that all start with "LSS_".
+ * Do not access these symbols from outside this file. They are not part
+ * of the supported API.
+ */
+#ifndef SYS_LINUX_SYSCALL_SUPPORT_H
+#define SYS_LINUX_SYSCALL_SUPPORT_H
+
+/* We currently only support x86-32, x86-64, ARM, MIPS, PPC, s390 and s390x
+ * on Linux.
+ * Porting to other related platforms should not be difficult.
+ */
+#if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) ||   \
+     defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__) || \
+     defined(__aarch64__) || defined(__s390__) || defined(__e2k__))  \
+  && (defined(__linux) || defined(__ANDROID__))
+
+#ifndef SYS_CPLUSPLUS
+#ifdef __cplusplus
+/* Some system header files in older versions of gcc neglect to properly
+ * handle being included from C++. As it appears to be harmless to have
+ * multiple nested 'extern "C"' blocks, just add another one here.
+ */
+extern "C" {
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <linux/unistd.h>
+#include <endian.h>
+
+#ifdef __mips__
+/* Include definitions of the ABI currently in use.                          */
+#ifdef __ANDROID__
+/* Android doesn't have sgidefs.h, but does have asm/sgidefs.h,
+ * which has the definitions we need.
+ */
+#include <asm/sgidefs.h>
+#else
+#include <sgidefs.h>
+#endif
+#endif
+#endif
+
+/* Some libcs, for example Android NDK and musl, #define these
+ * macros as aliases to their non-64 counterparts. To avoid naming
+ * conflict, remove them.
+ *
+ * These are restored by the corresponding #pragma pop_macro near
+ * the end of this file.
+ */
+#pragma push_macro("stat64")
+#pragma push_macro("fstat64")
+#pragma push_macro("lstat64")
+#pragma push_macro("pread64")
+#pragma push_macro("pwrite64")
+#pragma push_macro("getdents64")
+#undef stat64
+#undef fstat64
+#undef lstat64
+#undef pread64
+#undef pwrite64
+#undef getdents64
+
+#if defined(__ANDROID__) && defined(__x86_64__)
+// A number of x86_64 syscalls are blocked by seccomp on recent Android;
+// undefine them so that modern alternatives will be used instead where
+// possible.
+// The alternative syscalls have been sanity checked against linux-3.4+;
+// older versions might not work.
+# undef __NR_getdents
+# undef __NR_dup2
+# undef __NR_fork
+# undef __NR_getpgrp
+# undef __NR_open
+# undef __NR_poll
+# undef __NR_readlink
+# undef __NR_stat
+# undef __NR_unlink
+# undef __NR_pipe
+#endif
+
+#if defined(__ANDROID__)
+// waitpid is blocked by seccomp on all architectures on recent Android.
+# undef __NR_waitpid
+#endif
+
+/* As glibc often provides subtly incompatible data structures (and implicit
+ * wrapper functions that convert them), we provide our own kernel data
+ * structures for use by the system calls.
+ * These structures have been developed by using Linux 2.6.23 headers for
+ * reference. Note though, we do not care about exact API compatibility
+ * with the kernel, and in fact the kernel often does not have a single
+ * API that works across architectures. Instead, we try to mimic the glibc
+ * API where reasonable, and only guarantee ABI compatibility with the
+ * kernel headers.
+ * Most notably, here are a few changes that were made to the structures
+ * defined by kernel headers:
+ *
+ * - we only define structures, but not symbolic names for kernel data
+ *   types. For the latter, we directly use the native C datatype
+ *   (i.e. "unsigned" instead of "mode_t").
+ * - in a few cases, it is possible to define identical structures for
+ *   both 32bit (e.g. i386) and 64bit (e.g. x86-64) platforms by
+ *   standardizing on the 64bit version of the data types. In particular,
+ *   this means that we use "unsigned" where the 32bit headers say
+ *   "unsigned long".
+ * - overall, we try to minimize the number of cases where we need to
+ *   conditionally define different structures.
+ * - the "struct kernel_sigaction" class of structures have been
+ *   modified to more closely mimic glibc's API by introducing an
+ *   anonymous union for the function pointer.
+ * - a small number of field names had to have an underscore appended to
+ *   them, because glibc defines a global macro by the same name.
+ */
+
+/* include/linux/dirent.h                                                    */
+struct kernel_dirent64 {
+  unsigned long long d_ino;
+  long long          d_off;
+  unsigned short     d_reclen;
+  unsigned char      d_type;
+  char               d_name[256];
+};
+
+/* include/linux/dirent.h                                                    */
+#if !defined(__NR_getdents)
+// when getdents is not available, getdents64 is used for both.
+#define kernel_dirent kernel_dirent64
+#else
+struct kernel_dirent {
+  long               d_ino;
+  long               d_off;
+  unsigned short     d_reclen;
+  char               d_name[256];
+};
+#endif
+
+/* include/linux/uio.h                                                       */
+struct kernel_iovec {
+  void               *iov_base;
+  unsigned long      iov_len;
+};
+
+/* include/linux/socket.h                                                    */
+struct kernel_msghdr {
+  void               *msg_name;
+  int                msg_namelen;
+  struct kernel_iovec*msg_iov;
+  unsigned long      msg_iovlen;
+  void               *msg_control;
+  unsigned long      msg_controllen;
+  unsigned           msg_flags;
+};
+
+/* include/asm-generic/poll.h                                                */
+struct kernel_pollfd {
+  int                fd;
+  short              events;
+  short              revents;
+};
+
+/* include/linux/resource.h                                                  */
+struct kernel_rlimit {
+  unsigned long      rlim_cur;
+  unsigned long      rlim_max;
+};
+
+/* include/linux/time.h                                                      */
+struct kernel_timespec {
+  long               tv_sec;
+  long               tv_nsec;
+};
+
+/* include/linux/time.h                                                      */
+struct kernel_timeval {
+  long               tv_sec;
+  long               tv_usec;
+};
+
+/* include/linux/resource.h                                                  */
+struct kernel_rusage {
+  struct kernel_timeval ru_utime;
+  struct kernel_timeval ru_stime;
+  long               ru_maxrss;
+  long               ru_ixrss;
+  long               ru_idrss;
+  long               ru_isrss;
+  long               ru_minflt;
+  long               ru_majflt;
+  long               ru_nswap;
+  long               ru_inblock;
+  long               ru_oublock;
+  long               ru_msgsnd;
+  long               ru_msgrcv;
+  long               ru_nsignals;
+  long               ru_nvcsw;
+  long               ru_nivcsw;
+};
+
+#if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \
+  || defined(__PPC__) || (defined(__s390__) && !defined(__s390x__)) \
+  || defined(__e2k__)
+
+/* include/asm-{arm,i386,mips,ppc}/signal.h                                  */
+struct kernel_old_sigaction {
+  union {
+    void             (*sa_handler_)(int);
+    void             (*sa_sigaction_)(int, siginfo_t *, void *);
+  };
+  unsigned long      sa_mask;
+  unsigned long      sa_flags;
+  void               (*sa_restorer)(void);
+} __attribute__((packed,aligned(4)));
+#elif (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
+  #define kernel_old_sigaction kernel_sigaction
+#elif defined(__aarch64__)
+  // No kernel_old_sigaction defined for arm64.
+#endif
+
+/* Some kernel functions (e.g. sigaction() in 2.6.23) require that the
+ * exactly match the size of the signal set, even though the API was
+ * intended to be extensible. We define our own KERNEL_NSIG to deal with
+ * this.
+ * Please note that glibc provides signals [1.._NSIG-1], whereas the
+ * kernel (and this header) provides the range [1..KERNEL_NSIG]. The
+ * actual number of signals is obviously the same, but the constants
+ * differ by one.
+ */
+#ifdef __mips__
+#define KERNEL_NSIG 128
+#else
+#define KERNEL_NSIG  64
+#endif
+
+/* include/asm-{arm,aarch64,i386,mips,x86_64}/signal.h                       */
+struct kernel_sigset_t {
+  unsigned long sig[(KERNEL_NSIG + 8*sizeof(unsigned long) - 1)/
+                    (8*sizeof(unsigned long))];
+};
+
+/* include/asm-{arm,i386,mips,x86_64,ppc}/signal.h                           */
+struct kernel_sigaction {
+#ifdef __mips__
+  unsigned long      sa_flags;
+  union {
+    void             (*sa_handler_)(int);
+    void             (*sa_sigaction_)(int, siginfo_t *, void *);
+  };
+  struct kernel_sigset_t sa_mask;
+#else
+  union {
+    void             (*sa_handler_)(int);
+    void             (*sa_sigaction_)(int, siginfo_t *, void *);
+  };
+  unsigned long      sa_flags;
+  void               (*sa_restorer)(void);
+  struct kernel_sigset_t sa_mask;
+#endif
+};
+
+/* include/linux/socket.h                                                    */
+struct kernel_sockaddr {
+  unsigned short     sa_family;
+  char               sa_data[14];
+};
+
+/* include/asm-{arm,aarch64,i386,mips,ppc,s390}/stat.h                       */
+#ifdef __mips__
+#if _MIPS_SIM == _MIPS_SIM_ABI64
+struct kernel_stat {
+#else
+struct kernel_stat64 {
+#endif
+  unsigned           st_dev;
+  unsigned           __pad0[3];
+  unsigned long long st_ino;
+  unsigned           st_mode;
+  unsigned           st_nlink;
+  unsigned           st_uid;
+  unsigned           st_gid;
+  unsigned           st_rdev;
+  unsigned           __pad1[3];
+  long long          st_size;
+  unsigned           st_atime_;
+  unsigned           st_atime_nsec_;
+  unsigned           st_mtime_;
+  unsigned           st_mtime_nsec_;
+  unsigned           st_ctime_;
+  unsigned           st_ctime_nsec_;
+  unsigned           st_blksize;
+  unsigned           __pad2;
+  unsigned long long st_blocks;
+};
+#elif defined __PPC__
+struct kernel_stat64 {
+  unsigned long long st_dev;
+  unsigned long long st_ino;
+  unsigned           st_mode;
+  unsigned           st_nlink;
+  unsigned           st_uid;
+  unsigned           st_gid;
+  unsigned long long st_rdev;
+  unsigned short int __pad2;
+  long long          st_size;
+  long               st_blksize;
+  long long          st_blocks;
+  long               st_atime_;
+  unsigned long      st_atime_nsec_;
+  long               st_mtime_;
+  unsigned long      st_mtime_nsec_;
+  long               st_ctime_;
+  unsigned long      st_ctime_nsec_;
+  unsigned long      __unused4;
+  unsigned long      __unused5;
+};
+#elif defined(__e2k__)
+struct kernel_stat64 {
+  unsigned long long st_dev;
+  unsigned long long st_ino;
+  unsigned int       st_mode;
+  unsigned int       st_nlink;
+  unsigned int       st_uid;
+  unsigned int       st_gid;
+  unsigned long long st_rdev;
+  long long          st_size;
+  int                st_blksize;
+  int                __pad2;
+  unsigned long long st_blocks;
+  int                st_atime_;
+  unsigned int       st_atime_nsec_;
+  int                st_mtime_;
+  unsigned int       st_mtime_nsec_;
+  int                st_ctime_;
+  unsigned int       st_ctime_nsec_;
+  unsigned int       __unused4;
+  unsigned int       __unused5;
+};
+#else
+struct kernel_stat64 {
+  unsigned long long st_dev;
+  unsigned char      __pad0[4];
+  unsigned           __st_ino;
+  unsigned           st_mode;
+  unsigned           st_nlink;
+  unsigned           st_uid;
+  unsigned           st_gid;
+  unsigned long long st_rdev;
+  unsigned char      __pad3[4];
+  long long          st_size;
+  unsigned           st_blksize;
+  unsigned long long st_blocks;
+  unsigned           st_atime_;
+  unsigned           st_atime_nsec_;
+  unsigned           st_mtime_;
+  unsigned           st_mtime_nsec_;
+  unsigned           st_ctime_;
+  unsigned           st_ctime_nsec_;
+  unsigned long long st_ino;
+};
+#endif
+
+/* include/asm-{arm,aarch64,i386,mips,x86_64,ppc,s390}/stat.h                */
+#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
+struct kernel_stat {
+  /* The kernel headers suggest that st_dev and st_rdev should be 32bit
+   * quantities encoding 12bit major and 20bit minor numbers in an interleaved
+   * format. In reality, we do not see useful data in the top bits. So,
+   * we'll leave the padding in here, until we find a better solution.
+   */
+  unsigned short     st_dev;
+  short              pad1;
+  unsigned           st_ino;
+  unsigned short     st_mode;
+  unsigned short     st_nlink;
+  unsigned short     st_uid;
+  unsigned short     st_gid;
+  unsigned short     st_rdev;
+  short              pad2;
+  unsigned           st_size;
+  unsigned           st_blksize;
+  unsigned           st_blocks;
+  unsigned           st_atime_;
+  unsigned           st_atime_nsec_;
+  unsigned           st_mtime_;
+  unsigned           st_mtime_nsec_;
+  unsigned           st_ctime_;
+  unsigned           st_ctime_nsec_;
+  unsigned           __unused4;
+  unsigned           __unused5;
+};
+#elif defined(__x86_64__)
+struct kernel_stat {
+  uint64_t           st_dev;
+  uint64_t           st_ino;
+  uint64_t           st_nlink;
+  unsigned           st_mode;
+  unsigned           st_uid;
+  unsigned           st_gid;
+  unsigned           __pad0;
+  uint64_t           st_rdev;
+  int64_t            st_size;
+  int64_t            st_blksize;
+  int64_t            st_blocks;
+  uint64_t           st_atime_;
+  uint64_t           st_atime_nsec_;
+  uint64_t           st_mtime_;
+  uint64_t           st_mtime_nsec_;
+  uint64_t           st_ctime_;
+  uint64_t           st_ctime_nsec_;
+  int64_t            __unused4[3];
+};
+#elif defined(__PPC__)
+struct kernel_stat {
+  unsigned           st_dev;
+  unsigned long      st_ino;      // ino_t
+  unsigned long      st_mode;     // mode_t
+  unsigned short     st_nlink;    // nlink_t
+  unsigned           st_uid;      // uid_t
+  unsigned           st_gid;      // gid_t
+  unsigned           st_rdev;
+  long               st_size;     // off_t
+  unsigned long      st_blksize;
+  unsigned long      st_blocks;
+  unsigned long      st_atime_;
+  unsigned long      st_atime_nsec_;
+  unsigned long      st_mtime_;
+  unsigned long      st_mtime_nsec_;
+  unsigned long      st_ctime_;
+  unsigned long      st_ctime_nsec_;
+  unsigned long      __unused4;
+  unsigned long      __unused5;
+};
+#elif (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64)
+struct kernel_stat {
+  unsigned           st_dev;
+  int                st_pad1[3];
+  unsigned           st_ino;
+  unsigned           st_mode;
+  unsigned           st_nlink;
+  unsigned           st_uid;
+  unsigned           st_gid;
+  unsigned           st_rdev;
+  int                st_pad2[2];
+  long               st_size;
+  int                st_pad3;
+  long               st_atime_;
+  long               st_atime_nsec_;
+  long               st_mtime_;
+  long               st_mtime_nsec_;
+  long               st_ctime_;
+  long               st_ctime_nsec_;
+  int                st_blksize;
+  int                st_blocks;
+  int                st_pad4[14];
+};
+#elif defined(__aarch64__)
+struct kernel_stat {
+  unsigned long      st_dev;
+  unsigned long      st_ino;
+  unsigned int       st_mode;
+  unsigned int       st_nlink;
+  unsigned int       st_uid;
+  unsigned int       st_gid;
+  unsigned long      st_rdev;
+  unsigned long      __pad1;
+  long               st_size;
+  int                st_blksize;
+  int                __pad2;
+  long               st_blocks;
+  long               st_atime_;
+  unsigned long      st_atime_nsec_;
+  long               st_mtime_;
+  unsigned long      st_mtime_nsec_;
+  long               st_ctime_;
+  unsigned long      st_ctime_nsec_;
+  unsigned int       __unused4;
+  unsigned int       __unused5;
+};
+#elif defined(__s390x__)
+struct kernel_stat {
+  unsigned long      st_dev;
+  unsigned long      st_ino;
+  unsigned long      st_nlink;
+  unsigned int       st_mode;
+  unsigned int       st_uid;
+  unsigned int       st_gid;
+  unsigned int       __pad1;
+  unsigned long      st_rdev;
+  unsigned long      st_size;
+  unsigned long      st_atime_;
+  unsigned long      st_atime_nsec_;
+  unsigned long      st_mtime_;
+  unsigned long      st_mtime_nsec_;
+  unsigned long      st_ctime_;
+  unsigned long      st_ctime_nsec_;
+  unsigned long      st_blksize;
+  long               st_blocks;
+  unsigned long      __unused[3];
+};
+#elif defined(__s390__)
+struct kernel_stat {
+  unsigned short     st_dev;
+  unsigned short     __pad1;
+  unsigned long      st_ino;
+  unsigned short     st_mode;
+  unsigned short     st_nlink;
+  unsigned short     st_uid;
+  unsigned short     st_gid;
+  unsigned short     st_rdev;
+  unsigned short     __pad2;
+  unsigned long      st_size;
+  unsigned long      st_blksize;
+  unsigned long      st_blocks;
+  unsigned long      st_atime_;
+  unsigned long      st_atime_nsec_;
+  unsigned long      st_mtime_;
+  unsigned long      st_mtime_nsec_;
+  unsigned long      st_ctime_;
+  unsigned long      st_ctime_nsec_;
+  unsigned long      __unused4;
+  unsigned long      __unused5;
+};
+#elif defined(__e2k__)
+struct kernel_stat {
+  unsigned long      st_dev;
+  unsigned long      st_ino;
+  unsigned int       st_mode;
+  unsigned long      st_nlink;
+  unsigned int       st_uid;
+  unsigned int       st_gid;
+  unsigned long      st_rdev;
+  unsigned long      st_size;
+  unsigned long      st_blksize;
+  unsigned long      st_blocks;
+  unsigned long      st_atime_;
+  unsigned long      st_atime_nsec_;
+  unsigned long      st_mtime_;
+  unsigned long      st_mtime_nsec_;
+  unsigned long      st_ctime_;
+  unsigned long      st_ctime_nsec_;
+};
+#endif
+
+/* include/asm-{arm,aarch64,i386,mips,x86_64,ppc,s390}/statfs.h              */
+#ifdef __mips__
+#if _MIPS_SIM != _MIPS_SIM_ABI64
+struct kernel_statfs64 {
+  unsigned long      f_type;
+  unsigned long      f_bsize;
+  unsigned long      f_frsize;
+  unsigned long      __pad;
+  unsigned long long f_blocks;
+  unsigned long long f_bfree;
+  unsigned long long f_files;
+  unsigned long long f_ffree;
+  unsigned long long f_bavail;
+  struct { int val[2]; } f_fsid;
+  unsigned long      f_namelen;
+  unsigned long      f_spare[6];
+};
+#endif
+#elif defined(__s390__)
+/* See also arch/s390/include/asm/compat.h                                   */
+struct kernel_statfs64 {
+  unsigned int       f_type;
+  unsigned int       f_bsize;
+  unsigned long long f_blocks;
+  unsigned long long f_bfree;
+  unsigned long long f_bavail;
+  unsigned long long f_files;
+  unsigned long long f_ffree;
+  struct { int val[2]; } f_fsid;
+  unsigned int       f_namelen;
+  unsigned int       f_frsize;
+  unsigned int       f_flags;
+  unsigned int       f_spare[4];
+};
+#elif !defined(__x86_64__)
+struct kernel_statfs64 {
+  unsigned long      f_type;
+  unsigned long      f_bsize;
+  unsigned long long f_blocks;
+  unsigned long long f_bfree;
+  unsigned long long f_bavail;
+  unsigned long long f_files;
+  unsigned long long f_ffree;
+  struct { int val[2]; } f_fsid;
+  unsigned long      f_namelen;
+  unsigned long      f_frsize;
+  unsigned long      f_spare[5];
+};
+#endif
+
+/* include/asm-{arm,i386,mips,x86_64,ppc,generic,s390}/statfs.h              */
+#ifdef __mips__
+struct kernel_statfs {
+  long               f_type;
+  long               f_bsize;
+  long               f_frsize;
+  long               f_blocks;
+  long               f_bfree;
+  long               f_files;
+  long               f_ffree;
+  long               f_bavail;
+  struct { int val[2]; } f_fsid;
+  long               f_namelen;
+  long               f_spare[6];
+};
+#elif defined(__x86_64__)
+struct kernel_statfs {
+  /* x86_64 actually defines all these fields as signed, whereas all other  */
+  /* platforms define them as unsigned. Leaving them at unsigned should not */
+  /* cause any problems. Make sure these are 64-bit even on x32.            */
+  uint64_t           f_type;
+  uint64_t           f_bsize;
+  uint64_t           f_blocks;
+  uint64_t           f_bfree;
+  uint64_t           f_bavail;
+  uint64_t           f_files;
+  uint64_t           f_ffree;
+  struct { int val[2]; } f_fsid;
+  uint64_t           f_namelen;
+  uint64_t           f_frsize;
+  uint64_t           f_spare[5];
+};
+#elif defined(__s390__)
+struct kernel_statfs {
+  unsigned int       f_type;
+  unsigned int       f_bsize;
+  unsigned long      f_blocks;
+  unsigned long      f_bfree;
+  unsigned long      f_bavail;
+  unsigned long      f_files;
+  unsigned long      f_ffree;
+  struct { int val[2]; } f_fsid;
+  unsigned int       f_namelen;
+  unsigned int       f_frsize;
+  unsigned int       f_flags;
+  unsigned int       f_spare[4];
+};
+#else
+struct kernel_statfs {
+  unsigned long      f_type;
+  unsigned long      f_bsize;
+  unsigned long      f_blocks;
+  unsigned long      f_bfree;
+  unsigned long      f_bavail;
+  unsigned long      f_files;
+  unsigned long      f_ffree;
+  struct { int val[2]; } f_fsid;
+  unsigned long      f_namelen;
+  unsigned long      f_frsize;
+  unsigned long      f_spare[5];
+};
+#endif
+
+
+/* Definitions missing from the standard header files                        */
+#ifndef O_DIRECTORY
+#if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || defined(__aarch64__)
+#define O_DIRECTORY             0040000
+#else
+#define O_DIRECTORY             0200000
+#endif
+#endif
+#ifndef NT_PRXFPREG
+#define NT_PRXFPREG             0x46e62b7f
+#endif
+#ifndef PTRACE_GETFPXREGS
+#define PTRACE_GETFPXREGS       ((enum __ptrace_request)18)
+#endif
+#ifndef PR_GET_DUMPABLE
+#define PR_GET_DUMPABLE         3
+#endif
+#ifndef PR_SET_DUMPABLE
+#define PR_SET_DUMPABLE         4
+#endif
+#ifndef PR_GET_SECCOMP
+#define PR_GET_SECCOMP          21
+#endif
+#ifndef PR_SET_SECCOMP
+#define PR_SET_SECCOMP          22
+#endif
+#ifndef AT_FDCWD
+#define AT_FDCWD                (-100)
+#endif
+#ifndef AT_SYMLINK_NOFOLLOW
+#define AT_SYMLINK_NOFOLLOW     0x100
+#endif
+#ifndef AT_REMOVEDIR
+#define AT_REMOVEDIR            0x200
+#endif
+#ifndef MREMAP_FIXED
+#define MREMAP_FIXED            2
+#endif
+#ifndef SA_RESTORER
+#define SA_RESTORER             0x04000000
+#endif
+#ifndef CPUCLOCK_PROF
+#define CPUCLOCK_PROF           0
+#endif
+#ifndef CPUCLOCK_VIRT
+#define CPUCLOCK_VIRT           1
+#endif
+#ifndef CPUCLOCK_SCHED
+#define CPUCLOCK_SCHED          2
+#endif
+#ifndef CPUCLOCK_PERTHREAD_MASK
+#define CPUCLOCK_PERTHREAD_MASK 4
+#endif
+#ifndef MAKE_PROCESS_CPUCLOCK
+#define MAKE_PROCESS_CPUCLOCK(pid, clock)                                     \
+        ((int)(~(unsigned)(pid) << 3) | (int)(clock))
+#endif
+#ifndef MAKE_THREAD_CPUCLOCK
+#define MAKE_THREAD_CPUCLOCK(tid, clock)                                      \
+        ((int)(~(unsigned)(tid) << 3) |                                       \
+         (int)((clock) | CPUCLOCK_PERTHREAD_MASK))
+#endif
+
+#ifndef FUTEX_WAIT
+#define FUTEX_WAIT                0
+#endif
+#ifndef FUTEX_WAKE
+#define FUTEX_WAKE                1
+#endif
+#ifndef FUTEX_FD
+#define FUTEX_FD                  2
+#endif
+#ifndef FUTEX_REQUEUE
+#define FUTEX_REQUEUE             3
+#endif
+#ifndef FUTEX_CMP_REQUEUE
+#define FUTEX_CMP_REQUEUE         4
+#endif
+#ifndef FUTEX_WAKE_OP
+#define FUTEX_WAKE_OP             5
+#endif
+#ifndef FUTEX_LOCK_PI
+#define FUTEX_LOCK_PI             6
+#endif
+#ifndef FUTEX_UNLOCK_PI
+#define FUTEX_UNLOCK_PI           7
+#endif
+#ifndef FUTEX_TRYLOCK_PI
+#define FUTEX_TRYLOCK_PI          8
+#endif
+#ifndef FUTEX_PRIVATE_FLAG
+#define FUTEX_PRIVATE_FLAG        128
+#endif
+#ifndef FUTEX_CMD_MASK
+#define FUTEX_CMD_MASK            ~FUTEX_PRIVATE_FLAG
+#endif
+#ifndef FUTEX_WAIT_PRIVATE
+#define FUTEX_WAIT_PRIVATE        (FUTEX_WAIT | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_WAKE_PRIVATE
+#define FUTEX_WAKE_PRIVATE        (FUTEX_WAKE | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_REQUEUE_PRIVATE
+#define FUTEX_REQUEUE_PRIVATE     (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_CMP_REQUEUE_PRIVATE
+#define FUTEX_CMP_REQUEUE_PRIVATE (FUTEX_CMP_REQUEUE | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_WAKE_OP_PRIVATE
+#define FUTEX_WAKE_OP_PRIVATE     (FUTEX_WAKE_OP | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_LOCK_PI_PRIVATE
+#define FUTEX_LOCK_PI_PRIVATE     (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_UNLOCK_PI_PRIVATE
+#define FUTEX_UNLOCK_PI_PRIVATE   (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG)
+#endif
+#ifndef FUTEX_TRYLOCK_PI_PRIVATE
+#define FUTEX_TRYLOCK_PI_PRIVATE  (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG)
+#endif
+
+
+#if defined(__x86_64__)
+#ifndef ARCH_SET_GS
+#define ARCH_SET_GS             0x1001
+#endif
+#ifndef ARCH_GET_GS
+#define ARCH_GET_GS             0x1004
+#endif
+#endif
+
+#if defined(__i386__)
+#ifndef __NR_quotactl
+#define __NR_quotactl           131
+#endif
+#ifndef __NR_setresuid
+#define __NR_setresuid          164
+#define __NR_getresuid          165
+#define __NR_setresgid          170
+#define __NR_getresgid          171
+#endif
+#ifndef __NR_rt_sigaction
+#define __NR_rt_sigreturn       173
+#define __NR_rt_sigaction       174
+#define __NR_rt_sigprocmask     175
+#define __NR_rt_sigpending      176
+#define __NR_rt_sigsuspend      179
+#endif
+#ifndef __NR_pread64
+#define __NR_pread64            180
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64           181
+#endif
+#ifndef __NR_ugetrlimit
+#define __NR_ugetrlimit         191
+#endif
+#ifndef __NR_stat64
+#define __NR_stat64             195
+#endif
+#ifndef __NR_fstat64
+#define __NR_fstat64            197
+#endif
+#ifndef __NR_setresuid32
+#define __NR_setresuid32        208
+#define __NR_getresuid32        209
+#define __NR_setresgid32        210
+#define __NR_getresgid32        211
+#endif
+#ifndef __NR_setfsuid32
+#define __NR_setfsuid32         215
+#define __NR_setfsgid32         216
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64         220
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             224
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          225
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           226
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          227
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           229
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          230
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          232
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         233
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              238
+#endif
+#ifndef __NR_futex
+#define __NR_futex              240
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  241
+#define __NR_sched_getaffinity  242
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    258
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      265
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       266
+#endif
+#ifndef __NR_statfs64
+#define __NR_statfs64           268
+#endif
+#ifndef __NR_fstatfs64
+#define __NR_fstatfs64          269
+#endif
+#ifndef __NR_fadvise64_64
+#define __NR_fadvise64_64       272
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         289
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         290
+#endif
+#ifndef __NR_openat
+#define __NR_openat             295
+#endif
+#ifndef __NR_fstatat64
+#define __NR_fstatat64          300
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           301
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         317
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             318
+#endif
+#ifndef __NR_fallocate
+#define __NR_fallocate          324
+#endif
+#ifndef __NR_getrandom
+#define __NR_getrandom          355
+#endif
+/* End of i386 definitions                                                   */
+#elif defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
+#ifndef __NR_setresuid
+#define __NR_setresuid          (__NR_SYSCALL_BASE + 164)
+#define __NR_getresuid          (__NR_SYSCALL_BASE + 165)
+#define __NR_setresgid          (__NR_SYSCALL_BASE + 170)
+#define __NR_getresgid          (__NR_SYSCALL_BASE + 171)
+#endif
+#ifndef __NR_rt_sigaction
+#define __NR_rt_sigreturn       (__NR_SYSCALL_BASE + 173)
+#define __NR_rt_sigaction       (__NR_SYSCALL_BASE + 174)
+#define __NR_rt_sigprocmask     (__NR_SYSCALL_BASE + 175)
+#define __NR_rt_sigpending      (__NR_SYSCALL_BASE + 176)
+#define __NR_rt_sigsuspend      (__NR_SYSCALL_BASE + 179)
+#endif
+#ifndef __NR_pread64
+#define __NR_pread64            (__NR_SYSCALL_BASE + 180)
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64           (__NR_SYSCALL_BASE + 181)
+#endif
+#ifndef __NR_ugetrlimit
+#define __NR_ugetrlimit         (__NR_SYSCALL_BASE + 191)
+#endif
+#ifndef __NR_stat64
+#define __NR_stat64             (__NR_SYSCALL_BASE + 195)
+#endif
+#ifndef __NR_fstat64
+#define __NR_fstat64            (__NR_SYSCALL_BASE + 197)
+#endif
+#ifndef __NR_setresuid32
+#define __NR_setresuid32        (__NR_SYSCALL_BASE + 208)
+#define __NR_getresuid32        (__NR_SYSCALL_BASE + 209)
+#define __NR_setresgid32        (__NR_SYSCALL_BASE + 210)
+#define __NR_getresgid32        (__NR_SYSCALL_BASE + 211)
+#endif
+#ifndef __NR_setfsuid32
+#define __NR_setfsuid32         (__NR_SYSCALL_BASE + 215)
+#define __NR_setfsgid32         (__NR_SYSCALL_BASE + 216)
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64         (__NR_SYSCALL_BASE + 217)
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             (__NR_SYSCALL_BASE + 224)
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          (__NR_SYSCALL_BASE + 225)
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           (__NR_SYSCALL_BASE + 226)
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          (__NR_SYSCALL_BASE + 227)
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           (__NR_SYSCALL_BASE + 229)
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          (__NR_SYSCALL_BASE + 230)
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          (__NR_SYSCALL_BASE + 232)
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         (__NR_SYSCALL_BASE + 233)
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              (__NR_SYSCALL_BASE + 238)
+#endif
+#ifndef __NR_futex
+#define __NR_futex              (__NR_SYSCALL_BASE + 240)
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  (__NR_SYSCALL_BASE + 241)
+#define __NR_sched_getaffinity  (__NR_SYSCALL_BASE + 242)
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    (__NR_SYSCALL_BASE + 256)
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      (__NR_SYSCALL_BASE + 263)
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       (__NR_SYSCALL_BASE + 264)
+#endif
+#ifndef __NR_statfs64
+#define __NR_statfs64           (__NR_SYSCALL_BASE + 266)
+#endif
+#ifndef __NR_fstatfs64
+#define __NR_fstatfs64          (__NR_SYSCALL_BASE + 267)
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         (__NR_SYSCALL_BASE + 314)
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         (__NR_SYSCALL_BASE + 315)
+#endif
+#ifndef __NR_fstatat64
+#define __NR_fstatat64          (__NR_SYSCALL_BASE + 327)
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         (__NR_SYSCALL_BASE + 344)
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             (__NR_SYSCALL_BASE + 345)
+#endif
+#ifndef __NR_getrandom
+#define __NR_getrandom          (__NR_SYSCALL_BASE + 384)
+#endif
+/* End of ARM 3/EABI definitions                                             */
+#elif defined(__aarch64__)
+#ifndef __NR_setxattr
+#define __NR_setxattr             5
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr            6
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr             8
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr            9
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr           11
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr          12
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set          30
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get          31
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat            35
+#endif
+#ifndef __NR_fallocate
+#define __NR_fallocate           47
+#endif
+#ifndef __NR_openat
+#define __NR_openat              56
+#endif
+#ifndef __NR_quotactl
+#define __NR_quotactl            60
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64          61
+#endif
+#ifndef __NR_getdents
+// when getdents is not available, getdents64 is used for both.
+#define __NR_getdents            __NR_getdents64
+#endif
+#ifndef __NR_pread64
+#define __NR_pread64             67
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64            68
+#endif
+#ifndef __NR_ppoll
+#define __NR_ppoll               73
+#endif
+#ifndef __NR_readlinkat
+#define __NR_readlinkat          78
+#endif
+#ifndef __NR_newfstatat
+#define __NR_newfstatat          79
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address     96
+#endif
+#ifndef __NR_futex
+#define __NR_futex               98
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      113
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       114
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  122
+#define __NR_sched_getaffinity  123
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              130
+#endif
+#ifndef __NR_setresuid
+#define __NR_setresuid          147
+#define __NR_getresuid          148
+#define __NR_setresgid          149
+#define __NR_getresgid          150
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             178
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          213
+#endif
+#ifndef __NR_fadvise64
+#define __NR_fadvise64          223
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         239
+#endif
+#ifndef __NR_getrandom
+#define __NR_getrandom          278
+#endif
+/* End of aarch64 definitions                                                */
+#elif defined(__x86_64__)
+#ifndef __NR_pread64
+#define __NR_pread64             17
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64            18
+#endif
+#ifndef __NR_setresuid
+#define __NR_setresuid          117
+#define __NR_getresuid          118
+#define __NR_setresgid          119
+#define __NR_getresgid          120
+#endif
+#ifndef __NR_quotactl
+#define __NR_quotactl           179
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             186
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          187
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           188
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          189
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           191
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          192
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          194
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         195
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              200
+#endif
+#ifndef __NR_futex
+#define __NR_futex              202
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  203
+#define __NR_sched_getaffinity  204
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64         217
+#endif
+#ifndef __NR_getdents
+// when getdents is not available, getdents64 is used for both.
+#define __NR_getdents           __NR_getdents64
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    218
+#endif
+#ifndef __NR_fadvise64
+#define __NR_fadvise64          221
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      228
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       229
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         251
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         252
+#endif
+#ifndef __NR_openat
+#define __NR_openat             257
+#endif
+#ifndef __NR_newfstatat
+#define __NR_newfstatat         262
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           263
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         279
+#endif
+#ifndef __NR_fallocate
+#define __NR_fallocate          285
+#endif
+#ifndef __NR_getrandom
+#define __NR_getrandom          318
+#endif
+/* End of x86-64 definitions                                                 */
+#elif defined(__mips__)
+#if _MIPS_SIM == _MIPS_SIM_ABI32
+#ifndef __NR_setresuid
+#define __NR_setresuid          (__NR_Linux + 185)
+#define __NR_getresuid          (__NR_Linux + 186)
+#define __NR_setresgid          (__NR_Linux + 190)
+#define __NR_getresgid          (__NR_Linux + 191)
+#endif
+#ifndef __NR_rt_sigaction
+#define __NR_rt_sigreturn       (__NR_Linux + 193)
+#define __NR_rt_sigaction       (__NR_Linux + 194)
+#define __NR_rt_sigprocmask     (__NR_Linux + 195)
+#define __NR_rt_sigpending      (__NR_Linux + 196)
+#define __NR_rt_sigsuspend      (__NR_Linux + 199)
+#endif
+#ifndef __NR_pread64
+#define __NR_pread64            (__NR_Linux + 200)
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64           (__NR_Linux + 201)
+#endif
+#ifndef __NR_stat64
+#define __NR_stat64             (__NR_Linux + 213)
+#endif
+#ifndef __NR_fstat64
+#define __NR_fstat64            (__NR_Linux + 215)
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64         (__NR_Linux + 219)
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             (__NR_Linux + 222)
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          (__NR_Linux + 223)
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           (__NR_Linux + 224)
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          (__NR_Linux + 225)
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           (__NR_Linux + 227)
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          (__NR_Linux + 228)
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          (__NR_Linux + 230)
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         (__NR_Linux + 231)
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              (__NR_Linux + 236)
+#endif
+#ifndef __NR_futex
+#define __NR_futex              (__NR_Linux + 238)
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  (__NR_Linux + 239)
+#define __NR_sched_getaffinity  (__NR_Linux + 240)
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    (__NR_Linux + 252)
+#endif
+#ifndef __NR_statfs64
+#define __NR_statfs64           (__NR_Linux + 255)
+#endif
+#ifndef __NR_fstatfs64
+#define __NR_fstatfs64          (__NR_Linux + 256)
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      (__NR_Linux + 263)
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       (__NR_Linux + 264)
+#endif
+#ifndef __NR_openat
+#define __NR_openat             (__NR_Linux + 288)
+#endif
+#ifndef __NR_fstatat
+#define __NR_fstatat            (__NR_Linux + 293)
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           (__NR_Linux + 294)
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         (__NR_Linux + 308)
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             (__NR_Linux + 312)
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         (__NR_Linux + 314)
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         (__NR_Linux + 315)
+#endif
+#ifndef __NR_getrandom
+#define __NR_getrandom          (__NR_Linux + 353)
+#endif
+/* End of MIPS (old 32bit API) definitions */
+#elif  _MIPS_SIM == _MIPS_SIM_ABI64
+#ifndef __NR_pread64
+#define __NR_pread64            (__NR_Linux +  16)
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64           (__NR_Linux +  17)
+#endif
+#ifndef __NR_setresuid
+#define __NR_setresuid          (__NR_Linux + 115)
+#define __NR_getresuid          (__NR_Linux + 116)
+#define __NR_setresgid          (__NR_Linux + 117)
+#define __NR_getresgid          (__NR_Linux + 118)
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             (__NR_Linux + 178)
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          (__NR_Linux + 179)
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           (__NR_Linux + 180)
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          (__NR_Linux + 181)
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           (__NR_Linux + 183)
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          (__NR_Linux + 184)
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          (__NR_Linux + 186)
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         (__NR_Linux + 187)
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              (__NR_Linux + 192)
+#endif
+#ifndef __NR_futex
+#define __NR_futex              (__NR_Linux + 194)
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  (__NR_Linux + 195)
+#define __NR_sched_getaffinity  (__NR_Linux + 196)
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    (__NR_Linux + 212)
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      (__NR_Linux + 222)
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       (__NR_Linux + 223)
+#endif
+#ifndef __NR_openat
+#define __NR_openat             (__NR_Linux + 247)
+#endif
+#ifndef __NR_fstatat
+#define __NR_fstatat            (__NR_Linux + 252)
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           (__NR_Linux + 253)
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         (__NR_Linux + 267)
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             (__NR_Linux + 271)
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         (__NR_Linux + 273)
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         (__NR_Linux + 274)
+#endif
+#ifndef __NR_getrandom
+#define __NR_getrandom          (__NR_Linux + 313)
+#endif
+/* End of MIPS (64bit API) definitions */
+#else
+#ifndef __NR_setresuid
+#define __NR_setresuid          (__NR_Linux + 115)
+#define __NR_getresuid          (__NR_Linux + 116)
+#define __NR_setresgid          (__NR_Linux + 117)
+#define __NR_getresgid          (__NR_Linux + 118)
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             (__NR_Linux + 178)
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          (__NR_Linux + 179)
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           (__NR_Linux + 180)
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          (__NR_Linux + 181)
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           (__NR_Linux + 183)
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          (__NR_Linux + 184)
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          (__NR_Linux + 186)
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         (__NR_Linux + 187)
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              (__NR_Linux + 192)
+#endif
+#ifndef __NR_futex
+#define __NR_futex              (__NR_Linux + 194)
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  (__NR_Linux + 195)
+#define __NR_sched_getaffinity  (__NR_Linux + 196)
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    (__NR_Linux + 213)
+#endif
+#ifndef __NR_statfs64
+#define __NR_statfs64           (__NR_Linux + 217)
+#endif
+#ifndef __NR_fstatfs64
+#define __NR_fstatfs64          (__NR_Linux + 218)
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      (__NR_Linux + 226)
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       (__NR_Linux + 227)
+#endif
+#ifndef __NR_openat
+#define __NR_openat             (__NR_Linux + 251)
+#endif
+#ifndef __NR_fstatat
+#define __NR_fstatat            (__NR_Linux + 256)
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           (__NR_Linux + 257)
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         (__NR_Linux + 271)
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             (__NR_Linux + 275)
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         (__NR_Linux + 277)
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         (__NR_Linux + 278)
+#endif
+/* End of MIPS (new 32bit API) definitions                                   */
+#endif
+/* End of MIPS definitions                                                   */
+#elif defined(__PPC__)
+#ifndef __NR_setfsuid
+#define __NR_setfsuid           138
+#define __NR_setfsgid           139
+#endif
+#ifndef __NR_setresuid
+#define __NR_setresuid          164
+#define __NR_getresuid          165
+#define __NR_setresgid          169
+#define __NR_getresgid          170
+#endif
+#ifndef __NR_rt_sigaction
+#define __NR_rt_sigreturn       172
+#define __NR_rt_sigaction       173
+#define __NR_rt_sigprocmask     174
+#define __NR_rt_sigpending      175
+#define __NR_rt_sigsuspend      178
+#endif
+#ifndef __NR_pread64
+#define __NR_pread64            179
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64           180
+#endif
+#ifndef __NR_ugetrlimit
+#define __NR_ugetrlimit         190
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          191
+#endif
+#ifndef __NR_stat64
+#define __NR_stat64             195
+#endif
+#ifndef __NR_fstat64
+#define __NR_fstat64            197
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64         202
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             207
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              208
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           209
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          210
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           212
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          213
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          215
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         216
+#endif
+#ifndef __NR_futex
+#define __NR_futex              221
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  222
+#define __NR_sched_getaffinity  223
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    232
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      246
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       247
+#endif
+#ifndef __NR_statfs64
+#define __NR_statfs64           252
+#endif
+#ifndef __NR_fstatfs64
+#define __NR_fstatfs64          253
+#endif
+#ifndef __NR_fadvise64_64
+#define __NR_fadvise64_64       254
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         273
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         274
+#endif
+#ifndef __NR_openat
+#define __NR_openat             286
+#endif
+#ifndef __NR_fstatat64
+#define __NR_fstatat64          291
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           292
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         301
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             302
+#endif
+/* End of powerpc defininitions                                              */
+#elif defined(__s390__)
+#ifndef __NR_quotactl
+#define __NR_quotactl           131
+#endif
+#ifndef __NR_rt_sigreturn
+#define __NR_rt_sigreturn       173
+#endif
+#ifndef __NR_rt_sigaction
+#define __NR_rt_sigaction       174
+#endif
+#ifndef __NR_rt_sigprocmask
+#define __NR_rt_sigprocmask     175
+#endif
+#ifndef __NR_rt_sigpending
+#define __NR_rt_sigpending      176
+#endif
+#ifndef __NR_rt_sigsuspend
+#define __NR_rt_sigsuspend      179
+#endif
+#ifndef __NR_pread64
+#define __NR_pread64            180
+#endif
+#ifndef __NR_pwrite64
+#define __NR_pwrite64           181
+#endif
+#ifndef __NR_getdents64
+#define __NR_getdents64         220
+#endif
+#ifndef __NR_readahead
+#define __NR_readahead          222
+#endif
+#ifndef __NR_setxattr
+#define __NR_setxattr           224
+#endif
+#ifndef __NR_lsetxattr
+#define __NR_lsetxattr          225
+#endif
+#ifndef __NR_getxattr
+#define __NR_getxattr           227
+#endif
+#ifndef __NR_lgetxattr
+#define __NR_lgetxattr          228
+#endif
+#ifndef __NR_listxattr
+#define __NR_listxattr          230
+#endif
+#ifndef __NR_llistxattr
+#define __NR_llistxattr         231
+#endif
+#ifndef __NR_gettid
+#define __NR_gettid             236
+#endif
+#ifndef __NR_tkill
+#define __NR_tkill              237
+#endif
+#ifndef __NR_futex
+#define __NR_futex              238
+#endif
+#ifndef __NR_sched_setaffinity
+#define __NR_sched_setaffinity  239
+#endif
+#ifndef __NR_sched_getaffinity
+#define __NR_sched_getaffinity  240
+#endif
+#ifndef __NR_set_tid_address
+#define __NR_set_tid_address    252
+#endif
+#ifndef __NR_clock_gettime
+#define __NR_clock_gettime      260
+#endif
+#ifndef __NR_clock_getres
+#define __NR_clock_getres       261
+#endif
+#ifndef __NR_statfs64
+#define __NR_statfs64           265
+#endif
+#ifndef __NR_fstatfs64
+#define __NR_fstatfs64          266
+#endif
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         282
+#endif
+#ifndef __NR_ioprio_get
+#define __NR_ioprio_get         283
+#endif
+#ifndef __NR_openat
+#define __NR_openat             288
+#endif
+#ifndef __NR_unlinkat
+#define __NR_unlinkat           294
+#endif
+#ifndef __NR_move_pages
+#define __NR_move_pages         310
+#endif
+#ifndef __NR_getcpu
+#define __NR_getcpu             311
+#endif
+#ifndef __NR_fallocate
+#define __NR_fallocate          314
+#endif
+/* Some syscalls are named/numbered differently between s390 and s390x. */
+#ifdef __s390x__
+# ifndef __NR_getrlimit
+# define __NR_getrlimit          191
+# endif
+# ifndef __NR_setresuid
+# define __NR_setresuid          208
+# endif
+# ifndef __NR_getresuid
+# define __NR_getresuid          209
+# endif
+# ifndef __NR_setresgid
+# define __NR_setresgid          210
+# endif
+# ifndef __NR_getresgid
+# define __NR_getresgid          211
+# endif
+# ifndef __NR_setfsuid
+# define __NR_setfsuid           215
+# endif
+# ifndef __NR_setfsgid
+# define __NR_setfsgid           216
+# endif
+# ifndef __NR_fadvise64
+# define __NR_fadvise64          253
+# endif
+# ifndef __NR_newfstatat
+# define __NR_newfstatat         293
+# endif
+#else /* __s390x__ */
+# ifndef __NR_getrlimit
+# define __NR_getrlimit          76
+# endif
+# ifndef __NR_setfsuid
+# define __NR_setfsuid           138
+# endif
+# ifndef __NR_setfsgid
+# define __NR_setfsgid           139
+# endif
+# ifndef __NR_setresuid
+# define __NR_setresuid          164
+# endif
+# ifndef __NR_getresuid
+# define __NR_getresuid          165
+# endif
+# ifndef __NR_setresgid
+# define __NR_setresgid          170
+# endif
+# ifndef __NR_getresgid
+# define __NR_getresgid          171
+# endif
+# ifndef __NR_ugetrlimit
+# define __NR_ugetrlimit         191
+# endif
+# ifndef __NR_mmap2
+# define __NR_mmap2              192
+# endif
+# ifndef __NR_setresuid32
+# define __NR_setresuid32        208
+# endif
+# ifndef __NR_getresuid32
+# define __NR_getresuid32        209
+# endif
+# ifndef __NR_setresgid32
+# define __NR_setresgid32        210
+# endif
+# ifndef __NR_getresgid32
+# define __NR_getresgid32        211
+# endif
+# ifndef __NR_setfsuid32
+# define __NR_setfsuid32         215
+# endif
+# ifndef __NR_setfsgid32
+# define __NR_setfsgid32         216
+# endif
+# ifndef __NR_fadvise64_64
+# define __NR_fadvise64_64       264
+# endif
+# ifndef __NR_fstatat64
+# define __NR_fstatat64          293
+# endif
+#endif /* __s390__ */
+/* End of s390/s390x definitions                                             */
+#endif
+
+
+/* After forking, we must make sure to only call system calls.               */
+#if defined(__BOUNDED_POINTERS__)
+  #error "Need to port invocations of syscalls for bounded ptrs"
+#else
+  /* The core dumper and the thread lister get executed after threads
+   * have been suspended. As a consequence, we cannot call any functions
+   * that acquire locks. Unfortunately, libc wraps most system calls
+   * (e.g. in order to implement pthread_atfork, and to make calls
+   * cancellable), which means we cannot call these functions. Instead,
+   * we have to call syscall() directly.
+   */
+  #undef LSS_ERRNO
+  #ifdef SYS_ERRNO
+    /* Allow the including file to override the location of errno. This can
+     * be useful when using clone() with the CLONE_VM option.
+     */
+    #define LSS_ERRNO SYS_ERRNO
+  #else
+    #define LSS_ERRNO errno
+  #endif
+
+  #undef LSS_INLINE
+  #ifdef SYS_INLINE
+    #define LSS_INLINE SYS_INLINE
+  #else
+    #define LSS_INLINE static inline
+  #endif
+
+  /* Allow the including file to override the prefix used for all new
+   * system calls. By default, it will be set to "sys_".
+   */
+  #undef LSS_NAME
+  #ifndef SYS_PREFIX
+    #define LSS_NAME(name) sys_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX < 0
+    #define LSS_NAME(name) name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 0
+    #define LSS_NAME(name) sys0_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 1
+    #define LSS_NAME(name) sys1_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 2
+    #define LSS_NAME(name) sys2_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 3
+    #define LSS_NAME(name) sys3_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 4
+    #define LSS_NAME(name) sys4_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 5
+    #define LSS_NAME(name) sys5_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 6
+    #define LSS_NAME(name) sys6_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 7
+    #define LSS_NAME(name) sys7_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 8
+    #define LSS_NAME(name) sys8_##name
+  #elif defined(SYS_PREFIX) && SYS_PREFIX == 9
+    #define LSS_NAME(name) sys9_##name
+  #endif
+
+  #undef  LSS_RETURN
+  #if defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \
+       || defined(__ARM_EABI__) || defined(__aarch64__) || defined(__s390__) \
+       || defined(__e2k__)
+  /* Failing system calls return a negative result in the range of
+   * -1..-4095. These are "errno" values with the sign inverted.
+   */
+  #define LSS_RETURN(type, res)                                               \
+    do {                                                                      \
+      if ((unsigned long)(res) >= (unsigned long)(-4095)) {                   \
+        LSS_ERRNO = -(res);                                                   \
+        res = -1;                                                             \
+      }                                                                       \
+      return (type) (res);                                                    \
+    } while (0)
+  #elif defined(__mips__)
+  /* On MIPS, failing system calls return -1, and set errno in a
+   * separate CPU register.
+   */
+  #define LSS_RETURN(type, res, err)                                          \
+    do {                                                                      \
+      if (err) {                                                              \
+        unsigned long __errnovalue = (res);                                   \
+        LSS_ERRNO = __errnovalue;                                             \
+        res = -1;                                                             \
+      }                                                                       \
+      return (type) (res);                                                    \
+    } while (0)
+  #elif defined(__PPC__)
+  /* On PPC, failing system calls return -1, and set errno in a
+   * separate CPU register. See linux/unistd.h.
+   */
+  #define LSS_RETURN(type, res, err)                                          \
+   do {                                                                       \
+     if (err & 0x10000000 ) {                                                 \
+       LSS_ERRNO = (res);                                                     \
+       res = -1;                                                              \
+     }                                                                        \
+     return (type) (res);                                                     \
+   } while (0)
+  #endif
+  #if defined(__i386__)
+    /* In PIC mode (e.g. when building shared libraries), gcc for i386
+     * reserves ebx. Unfortunately, most distribution ship with implementations
+     * of _syscallX() which clobber ebx.
+     * Also, most definitions of _syscallX() neglect to mark "memory" as being
+     * clobbered. This causes problems with compilers, that do a better job
+     * at optimizing across __asm__ calls.
+     * So, we just have to redefine all of the _syscallX() macros.
+     */
+    #undef LSS_ENTRYPOINT
+    #ifdef SYS_SYSCALL_ENTRYPOINT
+    static inline void (**LSS_NAME(get_syscall_entrypoint)(void))(void) {
+      void (**entrypoint)(void);
+      asm volatile(".bss\n"
+                   ".align 8\n"
+                   ".globl " SYS_SYSCALL_ENTRYPOINT "\n"
+                   ".common " SYS_SYSCALL_ENTRYPOINT ",8,8\n"
+                   ".previous\n"
+                   /* This logically does 'lea "SYS_SYSCALL_ENTRYPOINT", %0' */
+                   "call 0f\n"
+                 "0:pop  %0\n"
+                   "add  $_GLOBAL_OFFSET_TABLE_+[.-0b], %0\n"
+                   "mov  " SYS_SYSCALL_ENTRYPOINT "@GOT(%0), %0\n"
+                   : "=r"(entrypoint));
+      return entrypoint;
+    }
+
+    #define LSS_ENTRYPOINT ".bss\n"                                           \
+                           ".align 8\n"                                       \
+                           ".globl " SYS_SYSCALL_ENTRYPOINT "\n"              \
+                           ".common " SYS_SYSCALL_ENTRYPOINT ",8,8\n"         \
+                           ".previous\n"                                      \
+                           /* Check the SYS_SYSCALL_ENTRYPOINT vector      */ \
+                           "push %%eax\n"                                     \
+                           "call 10000f\n"                                    \
+                     "10000:pop  %%eax\n"                                     \
+                           "add  $_GLOBAL_OFFSET_TABLE_+[.-10000b], %%eax\n"  \
+                           "mov  " SYS_SYSCALL_ENTRYPOINT                     \
+                                 "@GOT(%%eax), %%eax\n"                       \
+                           "mov  0(%%eax), %%eax\n"                           \
+                           "test %%eax, %%eax\n"                              \
+                           "jz   10002f\n"                                    \
+                           "push %%eax\n"                                     \
+                           "call 10001f\n"                                    \
+                     "10001:pop  %%eax\n"                                     \
+                           "add  $(10003f-10001b), %%eax\n"                   \
+                           "xchg 4(%%esp), %%eax\n"                           \
+                           "ret\n"                                            \
+                     "10002:pop  %%eax\n"                                     \
+                           "int $0x80\n"                                      \
+                     "10003:\n"
+    #else
+    #define LSS_ENTRYPOINT "int $0x80\n"
+    #endif
+    #undef  LSS_BODY
+    #define LSS_BODY(type,args...)                                            \
+      long __res;                                                             \
+      __asm__ __volatile__("push %%ebx\n"                                     \
+                           "movl %2,%%ebx\n"                                  \
+                           LSS_ENTRYPOINT                                     \
+                           "pop %%ebx"                                        \
+                           args                                               \
+                           : "memory");                                       \
+      LSS_RETURN(type,__res)
+    #undef  _syscall0
+    #define _syscall0(type,name)                                              \
+      type LSS_NAME(name)(void) {                                             \
+        long __res;                                                           \
+        __asm__ volatile(LSS_ENTRYPOINT                                       \
+                         : "=a" (__res)                                       \
+                         : "0" (__NR_##name)                                  \
+                         : "memory");                                         \
+        LSS_RETURN(type,__res);                                               \
+      }
+    #undef  _syscall1
+    #define _syscall1(type,name,type1,arg1)                                   \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_BODY(type,                                                        \
+             : "=a" (__res)                                                   \
+             : "0" (__NR_##name), "ri" ((long)(arg1)));                       \
+      }
+    #undef  _syscall2
+    #define _syscall2(type,name,type1,arg1,type2,arg2)                        \
+      type LSS_NAME(name)(type1 arg1,type2 arg2) {                            \
+        LSS_BODY(type,                                                        \
+             : "=a" (__res)                                                   \
+             : "0" (__NR_##name),"ri" ((long)(arg1)), "c" ((long)(arg2)));    \
+      }
+    #undef  _syscall3
+    #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)             \
+      type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3) {                 \
+        LSS_BODY(type,                                                        \
+             : "=a" (__res)                                                   \
+             : "0" (__NR_##name), "ri" ((long)(arg1)), "c" ((long)(arg2)),    \
+               "d" ((long)(arg3)));                                           \
+      }
+    #undef  _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_BODY(type,                                                        \
+             : "=a" (__res)                                                   \
+             : "0" (__NR_##name), "ri" ((long)(arg1)), "c" ((long)(arg2)),    \
+               "d" ((long)(arg3)),"S" ((long)(arg4)));                        \
+      }
+    #undef  _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        long __res;                                                           \
+        __asm__ __volatile__("push %%ebx\n"                                   \
+                             "movl %2,%%ebx\n"                                \
+                             "movl %1,%%eax\n"                                \
+                             LSS_ENTRYPOINT                                   \
+                             "pop  %%ebx"                                     \
+                             : "=a" (__res)                                   \
+                             : "i" (__NR_##name), "ri" ((long)(arg1)),        \
+                               "c" ((long)(arg2)), "d" ((long)(arg3)),        \
+                               "S" ((long)(arg4)), "D" ((long)(arg5))         \
+                             : "memory");                                     \
+        LSS_RETURN(type,__res);                                               \
+      }
+    #undef  _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        long __res;                                                           \
+        struct { long __a1; long __a6; } __s = { (long)arg1, (long) arg6 };   \
+        __asm__ __volatile__("push %%ebp\n"                                   \
+                             "push %%ebx\n"                                   \
+                             "movl 4(%2),%%ebp\n"                             \
+                             "movl 0(%2), %%ebx\n"                            \
+                             "movl %1,%%eax\n"                                \
+                             LSS_ENTRYPOINT                                   \
+                             "pop  %%ebx\n"                                   \
+                             "pop  %%ebp"                                     \
+                             : "=a" (__res)                                   \
+                             : "i" (__NR_##name),  "0" ((long)(&__s)),        \
+                               "c" ((long)(arg2)), "d" ((long)(arg3)),        \
+                               "S" ((long)(arg4)), "D" ((long)(arg5))         \
+                             : "memory");                                     \
+        LSS_RETURN(type,__res);                                               \
+      }
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long __res;
+      __asm__ __volatile__(/* if (fn == NULL)
+                            *   return -EINVAL;
+                            */
+                           "movl   %3,%%ecx\n"
+                           "jecxz  1f\n"
+
+                           /* if (child_stack == NULL)
+                            *   return -EINVAL;
+                            */
+                           "movl   %4,%%ecx\n"
+                           "jecxz  1f\n"
+
+                           /* Set up alignment of the child stack:
+                            * child_stack = (child_stack & ~0xF) - 20;
+                            */
+                           "andl   $-16,%%ecx\n"
+                           "subl   $20,%%ecx\n"
+
+                           /* Push "arg" and "fn" onto the stack that will be
+                            * used by the child.
+                            */
+                           "movl   %6,%%eax\n"
+                           "movl   %%eax,4(%%ecx)\n"
+                           "movl   %3,%%eax\n"
+                           "movl   %%eax,(%%ecx)\n"
+
+                           /* %eax = syscall(%eax = __NR_clone,
+                            *                %ebx = flags,
+                            *                %ecx = child_stack,
+                            *                %edx = parent_tidptr,
+                            *                %esi = newtls,
+                            *                %edi = child_tidptr)
+                            * Also, make sure that %ebx gets preserved as it is
+                            * used in PIC mode.
+                            */
+                           "movl   %8,%%esi\n"
+                           "movl   %7,%%edx\n"
+                           "movl   %5,%%eax\n"
+                           "movl   %9,%%edi\n"
+                           "pushl  %%ebx\n"
+                           "movl   %%eax,%%ebx\n"
+                           "movl   %2,%%eax\n"
+                           LSS_ENTRYPOINT
+
+                           /* In the parent: restore %ebx
+                            * In the child:  move "fn" into %ebx
+                            */
+                           "popl   %%ebx\n"
+
+                           /* if (%eax != 0)
+                            *   return %eax;
+                            */
+                           "test   %%eax,%%eax\n"
+                           "jnz    1f\n"
+
+                           /* In the child, now. Terminate frame pointer chain.
+                            */
+                           "movl   $0,%%ebp\n"
+
+                           /* Call "fn". "arg" is already on the stack.
+                            */
+                           "call   *%%ebx\n"
+
+                           /* Call _exit(%ebx). Unfortunately older versions
+                            * of gcc restrict the number of arguments that can
+                            * be passed to asm(). So, we need to hard-code the
+                            * system call number.
+                            */
+                           "movl   %%eax,%%ebx\n"
+                           "movl   $1,%%eax\n"
+                           LSS_ENTRYPOINT
+
+                           /* Return to parent.
+                            */
+                         "1:\n"
+                           : "=a" (__res)
+                           : "0"(-EINVAL), "i"(__NR_clone),
+                             "m"(fn), "m"(child_stack), "m"(flags), "m"(arg),
+                             "m"(parent_tidptr), "m"(newtls), "m"(child_tidptr)
+                           : "memory", "ecx", "edx", "esi", "edi");
+      LSS_RETURN(int, __res);
+    }
+
+    LSS_INLINE _syscall1(int, set_thread_area, void *, u)
+    LSS_INLINE _syscall1(int, get_thread_area, void *, u)
+
+    LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) {
+      /* On i386, the kernel does not know how to return from a signal
+       * handler. Instead, it relies on user space to provide a
+       * restorer function that calls the {rt_,}sigreturn() system call.
+       * Unfortunately, we cannot just reference the glibc version of this
+       * function, as glibc goes out of its way to make it inaccessible.
+       */
+      void (*res)(void);
+      __asm__ __volatile__("call   2f\n"
+                         "0:.align 16\n"
+                         "1:movl   %1,%%eax\n"
+                           LSS_ENTRYPOINT
+                         "2:popl   %0\n"
+                           "addl   $(1b-0b),%0\n"
+                           : "=a" (res)
+                           : "i"  (__NR_rt_sigreturn));
+      return res;
+    }
+    LSS_INLINE void (*LSS_NAME(restore)(void))(void) {
+      /* On i386, the kernel does not know how to return from a signal
+       * handler. Instead, it relies on user space to provide a
+       * restorer function that calls the {rt_,}sigreturn() system call.
+       * Unfortunately, we cannot just reference the glibc version of this
+       * function, as glibc goes out of its way to make it inaccessible.
+       */
+      void (*res)(void);
+      __asm__ __volatile__("call   2f\n"
+                         "0:.align 16\n"
+                         "1:pop    %%eax\n"
+                           "movl   %1,%%eax\n"
+                           LSS_ENTRYPOINT
+                         "2:popl   %0\n"
+                           "addl   $(1b-0b),%0\n"
+                           : "=a" (res)
+                           : "i"  (__NR_sigreturn));
+      return res;
+    }
+  #elif defined(__x86_64__)
+    /* There are no known problems with any of the _syscallX() macros
+     * currently shipping for x86_64, but we still need to be able to define
+     * our own version so that we can override the location of the errno
+     * location (e.g. when using the clone() system call with the CLONE_VM
+     * option).
+     */
+    #undef LSS_ENTRYPOINT
+    #ifdef SYS_SYSCALL_ENTRYPOINT
+    static inline void (**LSS_NAME(get_syscall_entrypoint)(void))(void) {
+      void (**entrypoint)(void);
+      asm volatile(".bss\n"
+                   ".align 8\n"
+                   ".globl " SYS_SYSCALL_ENTRYPOINT "\n"
+                   ".common " SYS_SYSCALL_ENTRYPOINT ",8,8\n"
+                   ".previous\n"
+                   "mov " SYS_SYSCALL_ENTRYPOINT "@GOTPCREL(%%rip), %0\n"
+                   : "=r"(entrypoint));
+      return entrypoint;
+    }
+
+    #define LSS_ENTRYPOINT                                                    \
+              ".bss\n"                                                        \
+              ".align 8\n"                                                    \
+              ".globl " SYS_SYSCALL_ENTRYPOINT "\n"                           \
+              ".common " SYS_SYSCALL_ENTRYPOINT ",8,8\n"                      \
+              ".previous\n"                                                   \
+              "mov " SYS_SYSCALL_ENTRYPOINT "@GOTPCREL(%%rip), %%rcx\n"       \
+              "mov  0(%%rcx), %%rcx\n"                                        \
+              "test %%rcx, %%rcx\n"                                           \
+              "jz   10001f\n"                                                 \
+              "call *%%rcx\n"                                                 \
+              "jmp  10002f\n"                                                 \
+        "10001:syscall\n"                                                     \
+        "10002:\n"
+
+    #else
+    #define LSS_ENTRYPOINT "syscall\n"
+    #endif
+
+    /* The x32 ABI has 32 bit longs, but the syscall interface is 64 bit.
+     * We need to explicitly cast to an unsigned 64 bit type to avoid implicit
+     * sign extension.  We can't cast pointers directly because those are
+     * 32 bits, and gcc will dump ugly warnings about casting from a pointer
+     * to an integer of a different size.
+     */
+    #undef  LSS_SYSCALL_ARG
+    #define LSS_SYSCALL_ARG(a) ((uint64_t)(uintptr_t)(a))
+    #undef  _LSS_RETURN
+    #define _LSS_RETURN(type, res, cast)                                      \
+      do {                                                                    \
+        if ((uint64_t)(res) >= (uint64_t)(-4095)) {                           \
+          LSS_ERRNO = -(res);                                                 \
+          res = -1;                                                           \
+        }                                                                     \
+        return (type)(cast)(res);                                             \
+      } while (0)
+    #undef  LSS_RETURN
+    #define LSS_RETURN(type, res) _LSS_RETURN(type, res, uintptr_t)
+
+    #undef  _LSS_BODY
+    #define _LSS_BODY(nr, type, name, cast, ...)                              \
+          long long __res;                                                    \
+          __asm__ __volatile__(LSS_BODY_ASM##nr LSS_ENTRYPOINT                \
+            : "=a" (__res)                                                    \
+            : "0" (__NR_##name) LSS_BODY_ARG##nr(__VA_ARGS__)                 \
+            : LSS_BODY_CLOBBER##nr "r11", "rcx", "memory");                   \
+          _LSS_RETURN(type, __res, cast)
+    #undef  LSS_BODY
+    #define LSS_BODY(nr, type, name, args...) \
+      _LSS_BODY(nr, type, name, uintptr_t, ## args)
+
+    #undef  LSS_BODY_ASM0
+    #undef  LSS_BODY_ASM1
+    #undef  LSS_BODY_ASM2
+    #undef  LSS_BODY_ASM3
+    #undef  LSS_BODY_ASM4
+    #undef  LSS_BODY_ASM5
+    #undef  LSS_BODY_ASM6
+    #define LSS_BODY_ASM0
+    #define LSS_BODY_ASM1 LSS_BODY_ASM0
+    #define LSS_BODY_ASM2 LSS_BODY_ASM1
+    #define LSS_BODY_ASM3 LSS_BODY_ASM2
+    #define LSS_BODY_ASM4 LSS_BODY_ASM3 "movq %5,%%r10;"
+    #define LSS_BODY_ASM5 LSS_BODY_ASM4 "movq %6,%%r8;"
+    #define LSS_BODY_ASM6 LSS_BODY_ASM5 "movq %7,%%r9;"
+
+    #undef  LSS_BODY_CLOBBER0
+    #undef  LSS_BODY_CLOBBER1
+    #undef  LSS_BODY_CLOBBER2
+    #undef  LSS_BODY_CLOBBER3
+    #undef  LSS_BODY_CLOBBER4
+    #undef  LSS_BODY_CLOBBER5
+    #undef  LSS_BODY_CLOBBER6
+    #define LSS_BODY_CLOBBER0
+    #define LSS_BODY_CLOBBER1 LSS_BODY_CLOBBER0
+    #define LSS_BODY_CLOBBER2 LSS_BODY_CLOBBER1
+    #define LSS_BODY_CLOBBER3 LSS_BODY_CLOBBER2
+    #define LSS_BODY_CLOBBER4 LSS_BODY_CLOBBER3 "r10",
+    #define LSS_BODY_CLOBBER5 LSS_BODY_CLOBBER4 "r8",
+    #define LSS_BODY_CLOBBER6 LSS_BODY_CLOBBER5 "r9",
+
+    #undef  LSS_BODY_ARG0
+    #undef  LSS_BODY_ARG1
+    #undef  LSS_BODY_ARG2
+    #undef  LSS_BODY_ARG3
+    #undef  LSS_BODY_ARG4
+    #undef  LSS_BODY_ARG5
+    #undef  LSS_BODY_ARG6
+    #define LSS_BODY_ARG0()
+    #define LSS_BODY_ARG1(arg1) \
+      LSS_BODY_ARG0(), "D" (arg1)
+    #define LSS_BODY_ARG2(arg1, arg2) \
+      LSS_BODY_ARG1(arg1), "S" (arg2)
+    #define LSS_BODY_ARG3(arg1, arg2, arg3) \
+      LSS_BODY_ARG2(arg1, arg2), "d" (arg3)
+    #define LSS_BODY_ARG4(arg1, arg2, arg3, arg4) \
+      LSS_BODY_ARG3(arg1, arg2, arg3), "r" (arg4)
+    #define LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5) \
+      LSS_BODY_ARG4(arg1, arg2, arg3, arg4), "r" (arg5)
+    #define LSS_BODY_ARG6(arg1, arg2, arg3, arg4, arg5, arg6) \
+      LSS_BODY_ARG5(arg1, arg2, arg3, arg4, arg5), "r" (arg6)
+
+    #undef _syscall0
+    #define _syscall0(type,name)                                              \
+      type LSS_NAME(name)(void) {                                             \
+        LSS_BODY(0, type, name);                                              \
+      }
+    #undef _syscall1
+    #define _syscall1(type,name,type1,arg1)                                   \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_BODY(1, type, name, LSS_SYSCALL_ARG(arg1));                       \
+      }
+    #undef _syscall2
+    #define _syscall2(type,name,type1,arg1,type2,arg2)                        \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        LSS_BODY(2, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2));\
+      }
+    #undef _syscall3
+    #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        LSS_BODY(3, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
+                                LSS_SYSCALL_ARG(arg3));                       \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_BODY(4, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
+                                LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4));\
+      }
+    #undef _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_BODY(5, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
+                                LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4), \
+                                LSS_SYSCALL_ARG(arg5));                       \
+      }
+    #undef _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_BODY(6, type, name, LSS_SYSCALL_ARG(arg1), LSS_SYSCALL_ARG(arg2), \
+                                LSS_SYSCALL_ARG(arg3), LSS_SYSCALL_ARG(arg4), \
+                                LSS_SYSCALL_ARG(arg5), LSS_SYSCALL_ARG(arg6));\
+      }
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long long __res;
+      {
+        __asm__ __volatile__(/* if (fn == NULL)
+                              *   return -EINVAL;
+                              */
+                             "testq  %4,%4\n"
+                             "jz     1f\n"
+
+                             /* if (child_stack == NULL)
+                              *   return -EINVAL;
+                              */
+                             "testq  %5,%5\n"
+                             "jz     1f\n"
+
+                             /* childstack -= 2*sizeof(void *);
+                              */
+                             "subq   $16,%5\n"
+
+                             /* Push "arg" and "fn" onto the stack that will be
+                              * used by the child.
+                              */
+                             "movq   %7,8(%5)\n"
+                             "movq   %4,0(%5)\n"
+
+                             /* %rax = syscall(%rax = __NR_clone,
+                              *                %rdi = flags,
+                              *                %rsi = child_stack,
+                              *                %rdx = parent_tidptr,
+                              *                %r8  = new_tls,
+                              *                %r10 = child_tidptr)
+                              */
+                             "movq   %2,%%rax\n"
+                             "movq   %9,%%r8\n"
+                             "movq   %10,%%r10\n"
+                             LSS_ENTRYPOINT
+
+                             /* if (%rax != 0)
+                              *   return;
+                              */
+                             "testq  %%rax,%%rax\n"
+                             "jnz    1f\n"
+
+                             /* In the child. Terminate frame pointer chain.
+                              */
+                             "xorq   %%rbp,%%rbp\n"
+
+                             /* Call "fn(arg)".
+                              */
+                             "popq   %%rax\n"
+                             "popq   %%rdi\n"
+                             "call   *%%rax\n"
+
+                             /* Call _exit(%ebx).
+                              */
+                             "movq   %%rax,%%rdi\n"
+                             "movq   %3,%%rax\n"
+                             LSS_ENTRYPOINT
+
+                             /* Return to parent.
+                              */
+                           "1:\n"
+                             : "=a" (__res)
+                             : "0"(-EINVAL), "i"(__NR_clone), "i"(__NR_exit),
+                               "r"(LSS_SYSCALL_ARG(fn)),
+                               "S"(LSS_SYSCALL_ARG(child_stack)),
+                               "D"(LSS_SYSCALL_ARG(flags)),
+                               "r"(LSS_SYSCALL_ARG(arg)),
+                               "d"(LSS_SYSCALL_ARG(parent_tidptr)),
+                               "r"(LSS_SYSCALL_ARG(newtls)),
+                               "r"(LSS_SYSCALL_ARG(child_tidptr))
+                             : "memory", "r8", "r10", "r11", "rcx");
+      }
+      LSS_RETURN(int, __res);
+    }
+    LSS_INLINE _syscall2(int, arch_prctl, int, c, void *, a)
+
+    LSS_INLINE void (*LSS_NAME(restore_rt)(void))(void) {
+      /* On x86-64, the kernel does not know how to return from
+       * a signal handler. Instead, it relies on user space to provide a
+       * restorer function that calls the rt_sigreturn() system call.
+       * Unfortunately, we cannot just reference the glibc version of this
+       * function, as glibc goes out of its way to make it inaccessible.
+       */
+      long long res;
+      __asm__ __volatile__("jmp    2f\n"
+                           ".align 16\n"
+                         "1:movq   %1,%%rax\n"
+                           LSS_ENTRYPOINT
+                         "2:leaq   1b(%%rip),%0\n"
+                           : "=r" (res)
+                           : "i"  (__NR_rt_sigreturn));
+      return (void (*)(void))(uintptr_t)res;
+    }
+  #elif defined(__ARM_ARCH_3__)
+    /* Most definitions of _syscallX() neglect to mark "memory" as being
+     * clobbered. This causes problems with compilers, that do a better job
+     * at optimizing across __asm__ calls.
+     * So, we just have to redefine all of the _syscallX() macros.
+     */
+    #undef LSS_REG
+    #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
+    #undef  LSS_BODY
+    #define LSS_BODY(type,name,args...)                                       \
+          register long __res_r0 __asm__("r0");                               \
+          long __res;                                                         \
+          __asm__ __volatile__ (__syscall(name)                               \
+                                : "=r"(__res_r0) : args : "lr", "memory");    \
+          __res = __res_r0;                                                   \
+          LSS_RETURN(type, __res)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+      type LSS_NAME(name)(void) {                                             \
+        LSS_BODY(type, name);                                                 \
+      }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0));                    \
+      }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1));                           \
+      }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2));                \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4);                                                     \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3));     \
+      }
+    #undef _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4));                                      \
+      }
+    #undef _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4), "r"(__r5));                           \
+      }
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long __res;
+      {
+        register int   __flags __asm__("r0") = flags;
+        register void *__stack __asm__("r1") = child_stack;
+        register void *__ptid  __asm__("r2") = parent_tidptr;
+        register void *__tls   __asm__("r3") = newtls;
+        register int  *__ctid  __asm__("r4") = child_tidptr;
+        __asm__ __volatile__(/* if (fn == NULL || child_stack == NULL)
+                              *   return -EINVAL;
+                              */
+                             "cmp   %2,#0\n"
+                             "cmpne %3,#0\n"
+                             "moveq %0,%1\n"
+                             "beq   1f\n"
+
+                             /* Push "arg" and "fn" onto the stack that will be
+                              * used by the child.
+                              */
+                             "str   %5,[%3,#-4]!\n"
+                             "str   %2,[%3,#-4]!\n"
+
+                             /* %r0 = syscall(%r0 = flags,
+                              *               %r1 = child_stack,
+                              *               %r2 = parent_tidptr,
+                              *               %r3 = newtls,
+                              *               %r4 = child_tidptr)
+                              */
+                             __syscall(clone)"\n"
+
+                             /* if (%r0 != 0)
+                              *   return %r0;
+                              */
+                             "movs  %0,r0\n"
+                             "bne   1f\n"
+
+                             /* In the child, now. Call "fn(arg)".
+                              */
+                             "ldr   r0,[sp, #4]\n"
+                             "mov   lr,pc\n"
+                             "ldr   pc,[sp]\n"
+
+                             /* Call _exit(%r0).
+                              */
+                             __syscall(exit)"\n"
+                           "1:\n"
+                             : "=r" (__res)
+                             : "i"(-EINVAL),
+                               "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
+                               "r"(__ptid), "r"(__tls), "r"(__ctid)
+                             : "cc", "lr", "memory");
+      }
+      LSS_RETURN(int, __res);
+    }
+  #elif defined(__ARM_EABI__)
+    /* Most definitions of _syscallX() neglect to mark "memory" as being
+     * clobbered. This causes problems with compilers, that do a better job
+     * at optimizing across __asm__ calls.
+     * So, we just have to redefine all fo the _syscallX() macros.
+     */
+    #undef LSS_REG
+    #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
+    #undef  LSS_BODY
+    #define LSS_BODY(type,name,args...)                                       \
+          register long __res_r0 __asm__("r0");                               \
+          long __res;                                                         \
+          __asm__ __volatile__ ("push {r7}\n"                                 \
+                                "mov r7, %1\n"                                \
+                                "swi 0x0\n"                                   \
+                                "pop {r7}\n"                                  \
+                                : "=r"(__res_r0)                              \
+                                : "i"(__NR_##name) , ## args                  \
+                                : "lr", "memory");                            \
+          __res = __res_r0;                                                   \
+          LSS_RETURN(type, __res)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+      type LSS_NAME(name)(void) {                                             \
+        LSS_BODY(type, name);                                                 \
+      }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0));                    \
+      }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1));                           \
+      }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2));                \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4);                                                     \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3));     \
+      }
+    #undef _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4));                                      \
+      }
+    #undef _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4), "r"(__r5));                           \
+      }
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long __res;
+      if (fn == NULL || child_stack == NULL) {
+        __res = -EINVAL;
+        LSS_RETURN(int, __res);
+      }
+
+      /* Push "arg" and "fn" onto the stack that will be
+       * used by the child.
+       */
+      {
+        uintptr_t* cstack = (uintptr_t*)child_stack - 2;
+        cstack[0] = (uintptr_t)fn;
+        cstack[1] = (uintptr_t)arg;
+        child_stack = cstack;
+      }
+      {
+        register int   __flags __asm__("r0") = flags;
+        register void *__stack __asm__("r1") = child_stack;
+        register void *__ptid  __asm__("r2") = parent_tidptr;
+        register void *__tls   __asm__("r3") = newtls;
+        register int  *__ctid  __asm__("r4") = child_tidptr;
+        __asm__ __volatile__(
+#ifdef __thumb2__
+            "push {r7}\n"
+#endif
+            /* %r0 = syscall(%r0 = flags,
+             *               %r1 = child_stack,
+             *               %r2 = parent_tidptr,
+             *               %r3 = newtls,
+             *               %r4 = child_tidptr)
+             */
+            "mov r7, %6\n"
+            "swi 0x0\n"
+
+            /* if (%r0 != 0)
+             *   return %r0;
+             */
+            "cmp   r0, #0\n"
+            "bne   1f\n"
+
+            /* In the child, now. Call "fn(arg)".
+             */
+            "ldr   r0,[sp, #4]\n"
+
+            "ldr   lr,[sp]\n"
+            "blx   lr\n"
+
+            /* Call _exit(%r0).
+             */
+            "mov r7, %7\n"
+            "swi 0x0\n"
+            /* Unreachable */
+            "bkpt #0\n"
+         "1:\n"
+#ifdef __thumb2__
+            "pop {r7}\n"
+#endif
+            "movs  %0,r0\n"
+            : "=r"(__res)
+            : "r"(__stack), "r"(__flags), "r"(__ptid), "r"(__tls), "r"(__ctid),
+              "i"(__NR_clone), "i"(__NR_exit)
+            : "cc", "lr", "memory"
+#ifndef __thumb2__
+            , "r7"
+#endif
+            );
+      }
+      LSS_RETURN(int, __res);
+    }
+  #elif defined(__aarch64__)
+    /* Most definitions of _syscallX() neglect to mark "memory" as being
+     * clobbered. This causes problems with compilers, that do a better job
+     * at optimizing across __asm__ calls.
+     * So, we just have to redefine all of the _syscallX() macros.
+     */
+    #undef LSS_REG
+    #define LSS_REG(r,a) register int64_t __r##r __asm__("x"#r) = (int64_t)a
+    #undef  LSS_BODY
+    #define LSS_BODY(type,name,args...)                                       \
+          register int64_t __res_x0 __asm__("x0");                            \
+          int64_t __res;                                                      \
+          __asm__ __volatile__ ("mov x8, %1\n"                                \
+                                "svc 0x0\n"                                   \
+                                : "=r"(__res_x0)                              \
+                                : "i"(__NR_##name) , ## args                  \
+                                : "x8", "memory");                            \
+          __res = __res_x0;                                                   \
+          LSS_RETURN(type, __res)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+      type LSS_NAME(name)(void) {                                             \
+        LSS_BODY(type, name);                                                 \
+      }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0));                    \
+      }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1));                           \
+      }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2));                \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4);                                                     \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3));     \
+      }
+    #undef _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4));                                      \
+      }
+    #undef _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4), "r"(__r5));                           \
+      }
+
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      int64_t __res;
+      {
+        register uint64_t __flags __asm__("x0") = flags;
+        register void *__stack __asm__("x1") = child_stack;
+        register void *__ptid  __asm__("x2") = parent_tidptr;
+        register void *__tls   __asm__("x3") = newtls;
+        register int  *__ctid  __asm__("x4") = child_tidptr;
+        __asm__ __volatile__(/* Push "arg" and "fn" onto the stack that will be
+                              * used by the child.
+                              */
+                             "stp     %1, %4, [%2, #-16]!\n"
+
+                             /* %x0 = syscall(%x0 = flags,
+                              *               %x1 = child_stack,
+                              *               %x2 = parent_tidptr,
+                              *               %x3 = newtls,
+                              *               %x4 = child_tidptr)
+                              */
+                             "mov     x8, %8\n"
+                             "svc     0x0\n"
+
+                             /* if (%r0 != 0)
+                              *   return %r0;
+                              */
+                             "mov     %0, x0\n"
+                             "cbnz    x0, 1f\n"
+
+                             /* In the child, now. Call "fn(arg)".
+                              */
+                             "ldp     x1, x0, [sp], #16\n"
+                             "blr     x1\n"
+
+                             /* Call _exit(%r0).
+                              */
+                             "mov     x8, %9\n"
+                             "svc     0x0\n"
+                           "1:\n"
+                             : "=r" (__res)
+                             : "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
+                               "r"(__ptid), "r"(__tls), "r"(__ctid),
+                               "i"(__NR_clone), "i"(__NR_exit)
+                             : "cc", "x8", "memory");
+      }
+      LSS_RETURN(int, __res);
+    }
+  #elif defined(__mips__)
+    #undef LSS_REG
+    #define LSS_REG(r,a) register unsigned long __r##r __asm__("$"#r) =       \
+                                 (unsigned long)(a)
+    #undef  LSS_BODY
+    #undef LSS_SYSCALL_CLOBBERS
+    #if _MIPS_SIM == _MIPS_SIM_ABI32
+    #define LSS_SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10",               \
+                                 "$11", "$12", "$13", "$14", "$15",           \
+                                 "$24", "$25", "hi", "lo", "memory"
+    #else
+    #define LSS_SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12",             \
+                                 "$13", "$14", "$15", "$24", "$25",           \
+                                 "hi", "lo", "memory"
+    #endif
+    #define LSS_BODY(type,name,r7,...)                                        \
+          register unsigned long __v0 __asm__("$2") = __NR_##name;            \
+          __asm__ __volatile__ ("syscall\n"                                   \
+                                : "=r"(__v0), r7 (__r7)                       \
+                                : "0"(__v0), ##__VA_ARGS__                    \
+                                : LSS_SYSCALL_CLOBBERS);                      \
+          LSS_RETURN(type, __v0, __r7)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+      type LSS_NAME(name)(void) {                                             \
+        register unsigned long __r7 __asm__("$7");                            \
+        LSS_BODY(type, name, "=r");                                           \
+      }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        register unsigned long __r7 __asm__("$7");                            \
+        LSS_REG(4, arg1); LSS_BODY(type, name, "=r", "r"(__r4));              \
+      }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        register unsigned long __r7 __asm__("$7");                            \
+        LSS_REG(4, arg1); LSS_REG(5, arg2);                                   \
+        LSS_BODY(type, name, "=r", "r"(__r4), "r"(__r5));                     \
+      }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        register unsigned long __r7 __asm__("$7");                            \
+        LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3);                 \
+        LSS_BODY(type, name, "=r", "r"(__r4), "r"(__r5), "r"(__r6));          \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3);                 \
+        LSS_REG(7, arg4);                                                     \
+        LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6));          \
+      }
+    #undef _syscall5
+    #if _MIPS_SIM == _MIPS_SIM_ABI32
+    /* The old 32bit MIPS system call API passes the fifth and sixth argument
+     * on the stack, whereas the new APIs use registers "r8" and "r9".
+     */
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3);                 \
+        LSS_REG(7, arg4);                                                     \
+        register unsigned long __v0 __asm__("$2") = __NR_##name;              \
+        __asm__ __volatile__ (".set noreorder\n"                              \
+                              "subu  $29, 32\n"                               \
+                              "sw    %5, 16($29)\n"                           \
+                              "syscall\n"                                     \
+                              "addiu $29, 32\n"                               \
+                              ".set reorder\n"                                \
+                              : "+r"(__v0), "+r" (__r7)                       \
+                              : "r"(__r4), "r"(__r5),                         \
+                                "r"(__r6), "r" ((unsigned long)arg5)          \
+                              : "$8", "$9", "$10", "$11", "$12",              \
+                                "$13", "$14", "$15", "$24", "$25",            \
+                                "memory");                                    \
+        LSS_RETURN(type, __v0, __r7);                                         \
+      }
+    #else
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3);                 \
+        LSS_REG(7, arg4); LSS_REG(8, arg5);                                   \
+        LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6),           \
+                 "r"(__r8));                                                  \
+      }
+    #endif
+    #undef _syscall6
+    #if _MIPS_SIM == _MIPS_SIM_ABI32
+    /* The old 32bit MIPS system call API passes the fifth and sixth argument
+     * on the stack, whereas the new APIs use registers "r8" and "r9".
+     */
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3);                 \
+        LSS_REG(7, arg4);                                                     \
+        register unsigned long __v0 __asm__("$2") = __NR_##name;              \
+        __asm__ __volatile__ (".set noreorder\n"                              \
+                              "subu  $29, 32\n"                               \
+                              "sw    %5, 16($29)\n"                           \
+                              "sw    %6, 20($29)\n"                           \
+                              "syscall\n"                                     \
+                              "addiu $29, 32\n"                               \
+                              ".set reorder\n"                                \
+                              : "+r"(__v0), "+r" (__r7)                       \
+                              : "r"(__r4), "r"(__r5),                         \
+                                "r"(__r6), "r" ((unsigned long)arg5),         \
+                                "r" ((unsigned long)arg6)                     \
+                              : "$8", "$9", "$10", "$11", "$12",              \
+                                "$13", "$14", "$15", "$24", "$25",            \
+                                "memory");                                    \
+        LSS_RETURN(type, __v0, __r7);                                         \
+      }
+    #else
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5,type6 arg6) {                            \
+        LSS_REG(4, arg1); LSS_REG(5, arg2); LSS_REG(6, arg3);                 \
+        LSS_REG(7, arg4); LSS_REG(8, arg5); LSS_REG(9, arg6);                 \
+        LSS_BODY(type, name, "+r", "r"(__r4), "r"(__r5), "r"(__r6),           \
+                 "r"(__r8), "r"(__r9));                                       \
+      }
+    #endif
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      register unsigned long __v0 __asm__("$2") = -EINVAL;
+      register unsigned long __r7 __asm__("$7") = (unsigned long)newtls;
+      {
+        register int   __flags __asm__("$4") = flags;
+        register void *__stack __asm__("$5") = child_stack;
+        register void *__ptid  __asm__("$6") = parent_tidptr;
+        register int  *__ctid  __asm__("$8") = child_tidptr;
+        __asm__ __volatile__(
+          #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
+                             "subu  $29,24\n"
+          #elif _MIPS_SIM == _MIPS_SIM_NABI32
+                             "sub   $29,16\n"
+          #else
+                             "dsubu $29,16\n"
+          #endif
+
+                             /* if (fn == NULL || child_stack == NULL)
+                              *   return -EINVAL;
+                              */
+                             "beqz  %4,1f\n"
+                             "beqz  %5,1f\n"
+
+                             /* Push "arg" and "fn" onto the stack that will be
+                              * used by the child.
+                              */
+          #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
+                             "subu  %5,32\n"
+                             "sw    %4,0(%5)\n"
+                             "sw    %7,4(%5)\n"
+          #elif _MIPS_SIM == _MIPS_SIM_NABI32
+                             "sub   %5,32\n"
+                             "sw    %4,0(%5)\n"
+                             "sw    %7,8(%5)\n"
+          #else
+                             "dsubu %5,32\n"
+                             "sd    %4,0(%5)\n"
+                             "sd    %7,8(%5)\n"
+          #endif
+
+                             /* $7 = syscall($4 = flags,
+                              *              $5 = child_stack,
+                              *              $6 = parent_tidptr,
+                              *              $7 = newtls,
+                              *              $8 = child_tidptr)
+                              */
+                             "li    $2,%2\n"
+                             "syscall\n"
+
+                             /* if ($7 != 0)
+                              *   return $2;
+                              */
+                             "bnez  $7,1f\n"
+                             "bnez  $2,1f\n"
+
+                             /* In the child, now. Call "fn(arg)".
+                              */
+          #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
+                            "lw    $25,0($29)\n"
+                            "lw    $4,4($29)\n"
+          #elif _MIPS_SIM == _MIPS_SIM_NABI32
+                            "lw    $25,0($29)\n"
+                            "lw    $4,8($29)\n"
+          #else
+                            "ld    $25,0($29)\n"
+                            "ld    $4,8($29)\n"
+          #endif
+                            "jalr  $25\n"
+
+                             /* Call _exit($2)
+                              */
+                            "move  $4,$2\n"
+                            "li    $2,%3\n"
+                            "syscall\n"
+
+                           "1:\n"
+          #if _MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32
+                             "addu  $29, 24\n"
+          #elif _MIPS_SIM == _MIPS_SIM_NABI32
+                             "add   $29, 16\n"
+          #else
+                             "daddu $29,16\n"
+          #endif
+                             : "+r" (__v0), "+r" (__r7)
+                             : "i"(__NR_clone), "i"(__NR_exit), "r"(fn),
+                               "r"(__stack), "r"(__flags), "r"(arg),
+                               "r"(__ptid), "r"(__ctid)
+                             : "$9", "$10", "$11", "$12", "$13", "$14", "$15",
+                               "$24", "$25", "memory");
+      }
+      LSS_RETURN(int, __v0, __r7);
+    }
+  #elif defined (__PPC__)
+    #undef  LSS_LOADARGS_0
+    #define LSS_LOADARGS_0(name, dummy...)                                    \
+        __sc_0 = __NR_##name
+    #undef  LSS_LOADARGS_1
+    #define LSS_LOADARGS_1(name, arg1)                                        \
+            LSS_LOADARGS_0(name);                                             \
+            __sc_3 = (unsigned long) (arg1)
+    #undef  LSS_LOADARGS_2
+    #define LSS_LOADARGS_2(name, arg1, arg2)                                  \
+            LSS_LOADARGS_1(name, arg1);                                       \
+            __sc_4 = (unsigned long) (arg2)
+    #undef  LSS_LOADARGS_3
+    #define LSS_LOADARGS_3(name, arg1, arg2, arg3)                            \
+            LSS_LOADARGS_2(name, arg1, arg2);                                 \
+            __sc_5 = (unsigned long) (arg3)
+    #undef  LSS_LOADARGS_4
+    #define LSS_LOADARGS_4(name, arg1, arg2, arg3, arg4)                      \
+            LSS_LOADARGS_3(name, arg1, arg2, arg3);                           \
+            __sc_6 = (unsigned long) (arg4)
+    #undef  LSS_LOADARGS_5
+    #define LSS_LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5)                \
+            LSS_LOADARGS_4(name, arg1, arg2, arg3, arg4);                     \
+            __sc_7 = (unsigned long) (arg5)
+    #undef  LSS_LOADARGS_6
+    #define LSS_LOADARGS_6(name, arg1, arg2, arg3, arg4, arg5, arg6)          \
+            LSS_LOADARGS_5(name, arg1, arg2, arg3, arg4, arg5);               \
+            __sc_8 = (unsigned long) (arg6)
+    #undef  LSS_ASMINPUT_0
+    #define LSS_ASMINPUT_0 "0" (__sc_0)
+    #undef  LSS_ASMINPUT_1
+    #define LSS_ASMINPUT_1 LSS_ASMINPUT_0, "1" (__sc_3)
+    #undef  LSS_ASMINPUT_2
+    #define LSS_ASMINPUT_2 LSS_ASMINPUT_1, "2" (__sc_4)
+    #undef  LSS_ASMINPUT_3
+    #define LSS_ASMINPUT_3 LSS_ASMINPUT_2, "3" (__sc_5)
+    #undef  LSS_ASMINPUT_4
+    #define LSS_ASMINPUT_4 LSS_ASMINPUT_3, "4" (__sc_6)
+    #undef  LSS_ASMINPUT_5
+    #define LSS_ASMINPUT_5 LSS_ASMINPUT_4, "5" (__sc_7)
+    #undef  LSS_ASMINPUT_6
+    #define LSS_ASMINPUT_6 LSS_ASMINPUT_5, "6" (__sc_8)
+    #undef  LSS_BODY
+    #define LSS_BODY(nr, type, name, args...)                                 \
+        long __sc_ret, __sc_err;                                              \
+        {                                                                     \
+                        register unsigned long __sc_0 __asm__ ("r0");         \
+                        register unsigned long __sc_3 __asm__ ("r3");         \
+                        register unsigned long __sc_4 __asm__ ("r4");         \
+                        register unsigned long __sc_5 __asm__ ("r5");         \
+                        register unsigned long __sc_6 __asm__ ("r6");         \
+                        register unsigned long __sc_7 __asm__ ("r7");         \
+                        register unsigned long __sc_8 __asm__ ("r8");         \
+                                                                              \
+            LSS_LOADARGS_##nr(name, args);                                    \
+            __asm__ __volatile__                                              \
+                ("sc\n\t"                                                     \
+                 "mfcr %0"                                                    \
+                 : "=&r" (__sc_0),                                            \
+                   "=&r" (__sc_3), "=&r" (__sc_4),                            \
+                   "=&r" (__sc_5), "=&r" (__sc_6),                            \
+                   "=&r" (__sc_7), "=&r" (__sc_8)                             \
+                 : LSS_ASMINPUT_##nr                                          \
+                 : "cr0", "ctr", "memory",                                    \
+                   "r9", "r10", "r11", "r12");                                \
+            __sc_ret = __sc_3;                                                \
+            __sc_err = __sc_0;                                                \
+        }                                                                     \
+        LSS_RETURN(type, __sc_ret, __sc_err)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+       type LSS_NAME(name)(void) {                                            \
+          LSS_BODY(0, type, name);                                            \
+       }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+       type LSS_NAME(name)(type1 arg1) {                                      \
+          LSS_BODY(1, type, name, arg1);                                      \
+       }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+       type LSS_NAME(name)(type1 arg1, type2 arg2) {                          \
+          LSS_BODY(2, type, name, arg1, arg2);                                \
+       }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {              \
+          LSS_BODY(3, type, name, arg1, arg2, arg3);                          \
+       }
+    #undef _syscall4
+    #define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3,      \
+                                  type4, arg4)                                \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {  \
+          LSS_BODY(4, type, name, arg1, arg2, arg3, arg4);                    \
+       }
+    #undef _syscall5
+    #define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3,      \
+                                  type4, arg4, type5, arg5)                   \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,    \
+                                               type5 arg5) {                  \
+          LSS_BODY(5, type, name, arg1, arg2, arg3, arg4, arg5);              \
+       }
+    #undef _syscall6
+    #define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3,      \
+                                  type4, arg4, type5, arg5, type6, arg6)      \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,    \
+                                               type5 arg5, type6 arg6) {      \
+          LSS_BODY(6, type, name, arg1, arg2, arg3, arg4, arg5, arg6);        \
+       }
+    /* clone function adapted from glibc 2.3.6 clone.S                       */
+    /* TODO(csilvers): consider wrapping some args up in a struct, like we
+     * do for i386's _syscall6, so we can compile successfully on gcc 2.95
+     */
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long __ret, __err;
+      {
+        register int (*__fn)(void *)    __asm__ ("r8")  = fn;
+        register void *__cstack                 __asm__ ("r4")  = child_stack;
+        register int __flags                    __asm__ ("r3")  = flags;
+        register void * __arg                   __asm__ ("r9")  = arg;
+        register int * __ptidptr                __asm__ ("r5")  = parent_tidptr;
+        register void * __newtls                __asm__ ("r6")  = newtls;
+        register int * __ctidptr                __asm__ ("r7")  = child_tidptr;
+        __asm__ __volatile__(
+            /* check for fn == NULL
+             * and child_stack == NULL
+             */
+            "cmpwi cr0, %6, 0\n\t"
+            "cmpwi cr1, %7, 0\n\t"
+            "cror cr0*4+eq, cr1*4+eq, cr0*4+eq\n\t"
+            "beq- cr0, 1f\n\t"
+
+            /* set up stack frame for child                                  */
+            "clrrwi %7, %7, 4\n\t"
+            "li 0, 0\n\t"
+            "stwu 0, -16(%7)\n\t"
+
+            /* fn, arg, child_stack are saved across the syscall: r28-30     */
+            "mr 28, %6\n\t"
+            "mr 29, %7\n\t"
+            "mr 27, %9\n\t"
+
+            /* syscall                                                       */
+            "li 0, %4\n\t"
+            /* flags already in r3
+             * child_stack already in r4
+             * ptidptr already in r5
+             * newtls already in r6
+             * ctidptr already in r7
+             */
+            "sc\n\t"
+
+            /* Test if syscall was successful                                */
+            "cmpwi cr1, 3, 0\n\t"
+            "crandc cr1*4+eq, cr1*4+eq, cr0*4+so\n\t"
+            "bne- cr1, 1f\n\t"
+
+            /* Do the function call                                          */
+            "mtctr 28\n\t"
+            "mr 3, 27\n\t"
+            "bctrl\n\t"
+
+            /* Call _exit(r3)                                                */
+            "li 0, %5\n\t"
+            "sc\n\t"
+
+            /* Return to parent                                              */
+            "1:\n"
+            "mfcr %1\n\t"
+            "mr %0, 3\n\t"
+              : "=r" (__ret), "=r" (__err)
+              : "0" (-1), "1" (EINVAL),
+                "i" (__NR_clone), "i" (__NR_exit),
+                "r" (__fn), "r" (__cstack), "r" (__flags),
+                "r" (__arg), "r" (__ptidptr), "r" (__newtls),
+                "r" (__ctidptr)
+              : "cr0", "cr1", "memory", "ctr",
+                "r0", "r29", "r27", "r28");
+      }
+      LSS_RETURN(int, __ret, __err);
+    }
+  #elif defined(__s390__)
+    #undef  LSS_REG
+    #define LSS_REG(r, a) register unsigned long __r##r __asm__("r"#r) = (unsigned long) a
+    #undef  LSS_BODY
+    #define LSS_BODY(type, name, args...)                                     \
+        register unsigned long __nr __asm__("r1")                             \
+            = (unsigned long)(__NR_##name);                                   \
+        register long __res_r2 __asm__("r2");                                 \
+        long __res;                                                           \
+        __asm__ __volatile__                                                  \
+            ("svc 0\n\t"                                                      \
+             : "=d"(__res_r2)                                                 \
+             : "d"(__nr), ## args                                             \
+             : "memory");                                                     \
+        __res = __res_r2;                                                     \
+        LSS_RETURN(type, __res)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+       type LSS_NAME(name)(void) {                                            \
+          LSS_BODY(type, name);                                               \
+       }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+       type LSS_NAME(name)(type1 arg1) {                                      \
+          LSS_REG(2, arg1);                                                   \
+          LSS_BODY(type, name, "0"(__r2));                                    \
+       }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+       type LSS_NAME(name)(type1 arg1, type2 arg2) {                          \
+          LSS_REG(2, arg1); LSS_REG(3, arg2);                                 \
+          LSS_BODY(type, name, "0"(__r2), "d"(__r3));                         \
+       }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {              \
+          LSS_REG(2, arg1); LSS_REG(3, arg2); LSS_REG(4, arg3);               \
+          LSS_BODY(type, name, "0"(__r2), "d"(__r3), "d"(__r4));              \
+       }
+    #undef _syscall4
+    #define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3,      \
+                                  type4, arg4)                                \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3,                \
+                           type4 arg4) {                                      \
+          LSS_REG(2, arg1); LSS_REG(3, arg2); LSS_REG(4, arg3);               \
+          LSS_REG(5, arg4);                                                   \
+          LSS_BODY(type, name, "0"(__r2), "d"(__r3), "d"(__r4),               \
+                               "d"(__r5));                                    \
+       }
+    #undef _syscall5
+    #define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3,      \
+                                  type4, arg4, type5, arg5)                   \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3,                \
+                           type4 arg4, type5 arg5) {                          \
+          LSS_REG(2, arg1); LSS_REG(3, arg2); LSS_REG(4, arg3);               \
+          LSS_REG(5, arg4); LSS_REG(6, arg5);                                 \
+          LSS_BODY(type, name, "0"(__r2), "d"(__r3), "d"(__r4),               \
+                               "d"(__r5), "d"(__r6));                         \
+       }
+    #undef _syscall6
+    #define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3,      \
+                                  type4, arg4, type5, arg5, type6, arg6)      \
+       type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3,                \
+                           type4 arg4, type5 arg5, type6 arg6) {              \
+          LSS_REG(2, arg1); LSS_REG(3, arg2); LSS_REG(4, arg3);               \
+          LSS_REG(5, arg4); LSS_REG(6, arg5); LSS_REG(7, arg6);               \
+          LSS_BODY(type, name, "0"(__r2), "d"(__r3), "d"(__r4),               \
+                               "d"(__r5), "d"(__r6), "d"(__r7));              \
+       }
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long __ret;
+      {
+        register int  (*__fn)(void *)    __asm__ ("r1")  = fn;
+        register void  *__cstack         __asm__ ("r2")  = child_stack;
+        register int    __flags          __asm__ ("r3")  = flags;
+        register void  *__arg            __asm__ ("r0")  = arg;
+        register int   *__ptidptr        __asm__ ("r4")  = parent_tidptr;
+        register void  *__newtls         __asm__ ("r6")  = newtls;
+        register int   *__ctidptr        __asm__ ("r5")  = child_tidptr;
+        __asm__ __volatile__ (
+    #ifndef __s390x__
+                                  /* arg already in r0 */
+          "ltr %4, %4\n\t"        /* check fn, which is already in r1 */
+          "jz 1f\n\t"             /* NULL function pointer, return -EINVAL */
+          "ltr %5, %5\n\t"        /* check child_stack, which is already in r2 */
+          "jz 1f\n\t"             /* NULL stack pointer, return -EINVAL */
+                                  /* flags already in r3 */
+                                  /* parent_tidptr already in r4 */
+                                  /* child_tidptr already in r5 */
+                                  /* newtls already in r6 */
+          "svc %2\n\t"            /* invoke clone syscall */
+          "ltr %0,%%r2\n\t"       /* load return code into __ret and test */
+          "jnz 1f\n\t"            /* return to parent if non-zero */
+                                  /* start child thread */
+          "lr %%r2, %7\n\t"       /* set first parameter to void *arg */
+          "ahi %%r15, -96\n\t"    /* make room on the stack for the save area */
+          "xc 0(4,%%r15), 0(%%r15)\n\t"
+          "basr %%r14, %4\n\t"    /* jump to fn */
+          "svc %3\n"              /* invoke exit syscall */
+          "1:\n"
+    #else
+                                  /* arg already in r0 */
+          "ltgr %4, %4\n\t"       /* check fn, which is already in r1 */
+          "jz 1f\n\t"             /* NULL function pointer, return -EINVAL */
+          "ltgr %5, %5\n\t"       /* check child_stack, which is already in r2 */
+          "jz 1f\n\t"             /* NULL stack pointer, return -EINVAL */
+                                  /* flags already in r3 */
+                                  /* parent_tidptr already in r4 */
+                                  /* child_tidptr already in r5 */
+                                  /* newtls already in r6 */
+          "svc %2\n\t"            /* invoke clone syscall */
+          "ltgr %0, %%r2\n\t"     /* load return code into __ret and test */
+          "jnz 1f\n\t"            /* return to parent if non-zero */
+                                  /* start child thread */
+          "lgr %%r2, %7\n\t"      /* set first parameter to void *arg */
+          "aghi %%r15, -160\n\t"  /* make room on the stack for the save area */
+          "xc 0(8,%%r15), 0(%%r15)\n\t"
+          "basr %%r14, %4\n\t"    /* jump to fn */
+          "svc %3\n"              /* invoke exit syscall */
+          "1:\n"
+    #endif
+          : "=r" (__ret)
+          : "0" (-EINVAL), "i" (__NR_clone), "i" (__NR_exit),
+            "d" (__fn), "d" (__cstack), "d" (__flags), "d" (__arg),
+            "d" (__ptidptr), "d" (__newtls), "d" (__ctidptr)
+          : "cc", "r14", "memory"
+        );
+      }
+      LSS_RETURN(int, __ret);
+    }
+  #elif defined(__e2k__)
+
+    #undef _LSS_BODY
+    #define _LSS_BODY(nr, type, name, ...)                                    \
+      register unsigned long long __res;                                      \
+      __asm__ __volatile__                                                    \
+      (                                                                       \
+       "{\n\t"                                                                \
+       "  sdisp %%ctpr1, 0x3\n\t"                                             \
+       "  addd, s 0x0, %[sys_num], %%b[0]\n\t"                                \
+       LSS_BODY_ASM##nr                                                       \
+       "}\n\t"                                                                \
+       "{\n\t"                                                                \
+       "  call %%ctpr1, wbs = %#\n\t"                                         \
+       "}\n\t"                                                                \
+       "{\n\t"                                                                \
+       "  addd, s 0x0, %%b[0], %[res]\n\t"                                    \
+       "}\n\t"                                                                \
+       : [res] "=r" (__res)                                                   \
+       :                                                                      \
+       LSS_BODY_ARG##nr(__VA_ARGS__)                                          \
+       [sys_num] "ri" (__NR_##name)                                           \
+       : "ctpr1", "ctpr2", "ctpr3",                                           \
+       "b[0]", "b[1]", "b[2]", "b[3]",                                        \
+       "b[4]", "b[5]", "b[6]", "b[7]"                                         \
+       );                                                                     \
+       LSS_RETURN(type, __res);
+
+    #undef LSS_BODY
+    #define LSS_BODY(nr, type, name, args...) \
+      _LSS_BODY(nr, type, name, ## args)
+
+    #undef LSS_BODY_ASM0
+    #undef LSS_BODY_ASM1
+    #undef LSS_BODY_ASM2
+    #undef LSS_BODY_ASM3
+    #undef LSS_BODY_ASM4
+    #undef LSS_BODY_ASM5
+    #undef LSS_BODY_ASM6
+
+    #define LSS_BODY_ASM0
+    #define LSS_BODY_ASM1 LSS_BODY_ASM0 \
+      "  addd, s 0x0, %[arg1], %%b[1]\n\t"
+    #define LSS_BODY_ASM2 LSS_BODY_ASM1 \
+      "  addd, s 0x0, %[arg2], %%b[2]\n\t"
+    #define LSS_BODY_ASM3 LSS_BODY_ASM2 \
+      "  addd, s 0x0, %[arg3], %%b[3]\n\t"
+    #define LSS_BODY_ASM4 LSS_BODY_ASM3 \
+      "  addd, s 0x0, %[arg4], %%b[4]\n\t"
+    #define LSS_BODY_ASM5 LSS_BODY_ASM4 \
+      "  addd, s 0x0, %[arg5], %%b[5]\n\t"
+    #define LSS_BODY_ASM6 LSS_BODY_ASM5 \
+      "}\n\t" \
+      "{\n\t" \
+      "  addd, s 0x0, %[arg6], %%b[6]\n\t"
+
+    #undef LSS_SYSCALL_ARG
+    #define LSS_SYSCALL_ARG(a) ((unsigned long long)(uintptr_t)(a))
+
+    #undef LSS_BODY_ARG0
+    #undef LSS_BODY_ARG1
+    #undef LSS_BODY_ARG2
+    #undef LSS_BODY_ARG3
+    #undef LSS_BODY_ARG4
+    #undef LSS_BODY_ARG5
+    #undef LSS_BODY_ARG6
+
+    #define LSS_BODY_ARG0()
+    #define LSS_BODY_ARG1(_arg1) \
+      [arg1] "ri" LSS_SYSCALL_ARG(_arg1),
+    #define LSS_BODY_ARG2(_arg1, _arg2) \
+      LSS_BODY_ARG1(_arg1) \
+      [arg2] "ri" LSS_SYSCALL_ARG(_arg2),
+    #define LSS_BODY_ARG3(_arg1, _arg2, _arg3) \
+      LSS_BODY_ARG2(_arg1, _arg2) \
+      [arg3] "ri" LSS_SYSCALL_ARG(_arg3),
+    #define LSS_BODY_ARG4(_arg1, _arg2, _arg3, _arg4) \
+      LSS_BODY_ARG3(_arg1, _arg2, _arg3) \
+      [arg4] "ri" LSS_SYSCALL_ARG(_arg4),
+    #define LSS_BODY_ARG5(_arg1, _arg2, _arg3, _arg4, _arg5) \
+      LSS_BODY_ARG4(_arg1, _arg2, _arg3, _arg4) \
+      [arg5] "ri" LSS_SYSCALL_ARG(_arg5),
+    #define LSS_BODY_ARG6(_arg1, _arg2, _arg3, _arg4, _arg5, _arg6) \
+      LSS_BODY_ARG5(_arg1, _arg2, _arg3, _arg4, _arg5) \
+      [arg6] "ri" LSS_SYSCALL_ARG(_arg6),
+
+    #undef _syscall0
+    #define _syscall0(type, name) \
+      type LSS_NAME(name)(void) { \
+        LSS_BODY(0, type, name);     \
+      }
+
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1) \
+      type LSS_NAME(name)(type1 arg1) { \
+         LSS_BODY(1, type, name, arg1) \
+      }
+
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2) \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) { \
+          LSS_BODY(2, type, name, arg1, arg2) \
+      }
+
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3) \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) { \
+          LSS_BODY(3, type, name, arg1, arg2, arg3) \
+      }
+
+    #undef _syscall4
+    #define _syscall4(type, name, type1, arg1, type2, arg2, type3, arg3, \
+                      type4, arg4) \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
+          LSS_BODY(4, type, name, arg1, arg2, arg3, arg4) \
+      }
+
+    #undef _syscall5
+    #define _syscall5(type, name, type1, arg1, type2, arg2, type3, arg3, \
+                      type4, arg4, type5, arg5) \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+                          type5 arg5) { \
+          LSS_BODY(5, type, name, arg1, arg2, arg3, arg4, arg5) \
+      }
+
+    #undef _syscall6
+    #define _syscall6(type, name, type1, arg1, type2, arg2, type3, arg3, \
+                      type4, arg4, type5, arg5, type6, arg6) \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
+                          type5 arg5, type6 arg6) { \
+          LSS_BODY(6, type, name, arg1, arg2, arg3, arg4, arg5, arg6) \
+      }
+
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      unsigned long long __res;
+
+      __asm__ __volatile__ (
+                            "{\n\t"
+                            "  addd,s 0x0, %[nr_clone], %%b[0]\n\t"
+                            "  addd,s 0x0, %[flags], %%db[1]\n\t"
+                            "  addd,s 0x0, %[child_stack], %%db[2]\n\t"
+                            "  addd,s 0x0, %[parent_tidptr], %%db[3]\n\t"
+                            "  addd,s 0x0, %[child_tidptr], %%db[4]\n\t"
+                            "  addd,s 0x0, %[newtls], %%db[5]\n\t"
+                            "}\n\t"
+                            /* if (fn == NULL)
+                             *   return -EINVAL;
+                             */
+
+                            "{\n\t"
+                            "  disp %%ctpr1, .L1\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  cmpesb,s 0x0, %[fn], %%pred0\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  ct %%ctpr1 ? %%pred0\n\t"
+                            "}\n\t"
+
+                            /* if (child_stack == NULL)
+                             *   return -EINVAL;
+                             */
+                            "{\n\t"
+                            "  cmpesb,s 0x0, %%db[2], %%pred0\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  ct %%ctpr1 ? %%pred0\n\t"
+                            "}\n\t"
+
+                            /* b[0] = syscall(%b[0] = __NR_clone,
+                             *                %db[1] = flags,
+                             *                %db[2] = child_stack,
+                             *                %db[3] = parent_tidptr,
+                             *                %db[4] = child_tidptr,
+                             *                %db[5] = newtls)
+                             */
+                            "{\n\t"
+                            "  sdisp %%ctpr1, 0x3\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  call %%ctpr1, wbs = %#\n\t"
+                            "}\n\t"
+
+                            /* if (%[b0] != 0)
+                             *   return %b[0];
+                             */
+                            "{\n\t"
+                            "  disp %%ctpr1, .L2\n\t"
+                            "  cmpesb,s 0x0, %%b[0], %%pred0\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  ct %%ctpr1 ? ~%%pred0\n\t"
+                            "}\n\t"
+                            /* In the child, now. Call "fn(arg)".
+                             */
+
+                            "{\n\t"
+                            "  movtd,s %[fn], %%ctpr1\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  addd,s 0x0, %[arg], %%db[0]\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  call %%ctpr1, wbs = %#\n\t"
+                            "}\n\t"
+                            /* Call _exit(%b[0]).
+                             */
+
+                            "{\n\t"
+                            "  sdisp %%ctpr1, 0x3\n\t"
+                            "  addd,s 0x0, %%b[0], %%b[1]\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  addd,s 0x0, %[nr_exit], %%b[0]\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  call %%ctpr1, wbs = %#\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  disp %%ctpr1, .L2\n\t"
+                            "  adds,s 0x0, 0x0, %%b[0]\n\t"
+                            "}\n\t"
+                            "{\n\t"
+                            "  ct %%ctpr1\n\t"
+                            "}\n\t"
+                            ".L1:\n\t"
+                            "{\n\t"
+                            "  addd,s 0x0, %[einval], %%b[0]\n\t"
+                            "}\n\t"
+                            ".L2:\n\t"
+                            "{\n\t"
+                            "  addd,s 0x0, %%b[0], %[res]\n\t"
+                            "}\n\t"
+                            : [res] "=r" LSS_SYSCALL_ARG(__res)
+                            : [nr_clone] "ri" LSS_SYSCALL_ARG(__NR_clone)
+                              [arg] "ri" LSS_SYSCALL_ARG(arg)
+                              [nr_exit] "ri" LSS_SYSCALL_ARG(__NR_exit)
+                              [flags] "ri" LSS_SYSCALL_ARG(flags)
+                              [child_stack] "ri" LSS_SYSCALL_ARG(child_stack)
+                              [parent_tidptr] "ri"
+                              LSS_SYSCALL_ARG(parent_tidptr)
+                              [newtls] "ri" LSS_SYSCALL_ARG(newtls)
+                              [child_tidptr] "ri"
+                              LSS_SYSCALL_ARG(child_tidptr)
+                              [fn] "ri" LSS_SYSCALL_ARG(fn)
+                              [einval] "ri" LSS_SYSCALL_ARG(-EINVAL)
+                            : "ctpr1", "b[0]", "b[1]", "b[2]", "b[3]",
+                              "b[4]", "b[5]", "pred0");
+      LSS_RETURN(int, __res);
+    }
+
+  #endif
+  #define __NR__exit   __NR_exit
+  #define __NR__gettid __NR_gettid
+  #define __NR__mremap __NR_mremap
+  LSS_INLINE _syscall1(void *,  brk,             void *,      e)
+  LSS_INLINE _syscall1(int,     chdir,           const char *,p)
+  LSS_INLINE _syscall1(int,     close,           int,         f)
+  LSS_INLINE _syscall2(int,     clock_getres,    int,         c,
+                       struct kernel_timespec*, t)
+  LSS_INLINE _syscall2(int,     clock_gettime,   int,         c,
+                       struct kernel_timespec*, t)
+  LSS_INLINE _syscall1(int,     dup,             int,         f)
+  #if defined(__NR_dup2)
+    // dup2 is polyfilled below when not available.
+    LSS_INLINE _syscall2(int,     dup2,            int,         s,
+                         int,            d)
+  #endif
+  #if defined(__NR_dup3)
+    LSS_INLINE _syscall3(int, dup3,  int, s, int, d, int, f)
+  #endif
+  LSS_INLINE _syscall3(int,     execve,          const char*, f,
+                       const char*const*,a,const char*const*, e)
+  LSS_INLINE _syscall1(int,     _exit,           int,         e)
+  LSS_INLINE _syscall1(int,     exit_group,      int,         e)
+  LSS_INLINE _syscall3(int,     fcntl,           int,         f,
+                       int,            c, long,   a)
+  #if defined(__NR_fork)
+    // fork is polyfilled below when not available.
+    LSS_INLINE _syscall0(pid_t,   fork)
+  #endif
+  LSS_INLINE _syscall2(int,     fstat,           int,         f,
+                      struct kernel_stat*,   b)
+  LSS_INLINE _syscall2(int,     fstatfs,         int,         f,
+                      struct kernel_statfs*, b)
+  #if defined(__x86_64__)
+    /* Need to make sure off_t isn't truncated to 32-bits under x32.  */
+    LSS_INLINE int LSS_NAME(ftruncate)(int f, off_t l) {
+      LSS_BODY(2, int, ftruncate, LSS_SYSCALL_ARG(f), (uint64_t)(l));
+    }
+  #else
+    LSS_INLINE _syscall2(int, ftruncate,           int,         f,
+                         off_t,          l)
+  #endif
+  LSS_INLINE _syscall6(int,     futex,          int*,        u,
+                       int,     o,              int,         v,
+                       struct kernel_timespec*, t,
+                       int*,    u2,             int,         v2)
+  LSS_INLINE _syscall3(int,     getdents,        int,         f,
+                       struct kernel_dirent*, d, int,    c)
+  LSS_INLINE _syscall3(int,     getdents64,      int,         f,
+                      struct kernel_dirent64*, d, int,    c)
+  LSS_INLINE _syscall0(gid_t,   getegid)
+  LSS_INLINE _syscall0(uid_t,   geteuid)
+  #if defined(__NR_getpgrp)
+    LSS_INLINE _syscall0(pid_t,   getpgrp)
+  #endif
+  LSS_INLINE _syscall0(pid_t,   getpid)
+  LSS_INLINE _syscall0(pid_t,   getppid)
+  LSS_INLINE _syscall2(int,     getpriority,     int,         a,
+                       int,            b)
+  LSS_INLINE _syscall3(int,     getresgid,       gid_t *,     r,
+                       gid_t *,         e,       gid_t *,     s)
+  LSS_INLINE _syscall3(int,     getresuid,       uid_t *,     r,
+                       uid_t *,         e,       uid_t *,     s)
+#if !defined(__ARM_EABI__)
+  LSS_INLINE _syscall2(int,     getrlimit,       int,         r,
+                      struct kernel_rlimit*, l)
+#endif
+  LSS_INLINE _syscall1(pid_t,   getsid,          pid_t,       p)
+  LSS_INLINE _syscall0(pid_t,   _gettid)
+  LSS_INLINE _syscall2(pid_t,   gettimeofday,    struct kernel_timeval*, t,
+                       void*, tz)
+  LSS_INLINE _syscall5(int,     setxattr,        const char *,p,
+                       const char *,   n,        const void *,v,
+                       size_t,         s,        int,         f)
+  LSS_INLINE _syscall5(int,     lsetxattr,       const char *,p,
+                       const char *,   n,        const void *,v,
+                       size_t,         s,        int,         f)
+  LSS_INLINE _syscall4(ssize_t, getxattr,        const char *,p,
+                       const char *,   n,        void *,      v, size_t, s)
+  LSS_INLINE _syscall4(ssize_t, lgetxattr,       const char *,p,
+                       const char *,   n,        void *,      v, size_t, s)
+  LSS_INLINE _syscall3(ssize_t, listxattr,       const char *,p,
+                       char *,   l,              size_t,      s)
+  LSS_INLINE _syscall3(ssize_t, llistxattr,      const char *,p,
+                       char *,   l,              size_t,      s)
+  LSS_INLINE _syscall3(int,     ioctl,           int,         d,
+                       int,     r,               void *,      a)
+  LSS_INLINE _syscall2(int,     ioprio_get,      int,         which,
+                       int,     who)
+  LSS_INLINE _syscall3(int,     ioprio_set,      int,         which,
+                       int,     who,             int,         ioprio)
+  LSS_INLINE _syscall2(int,     kill,            pid_t,       p,
+                       int,            s)
+  #if defined(__x86_64__)
+    /* Need to make sure off_t isn't truncated to 32-bits under x32.  */
+    LSS_INLINE off_t LSS_NAME(lseek)(int f, off_t o, int w) {
+      _LSS_BODY(3, off_t, lseek, off_t, LSS_SYSCALL_ARG(f), (uint64_t)(o),
+                                        LSS_SYSCALL_ARG(w));
+    }
+  #else
+    LSS_INLINE _syscall3(off_t,   lseek,           int,         f,
+                         off_t,          o, int,    w)
+  #endif
+  LSS_INLINE _syscall2(int,     munmap,          void*,       s,
+                       size_t,         l)
+  LSS_INLINE _syscall6(long,    move_pages,      pid_t,       p,
+                       unsigned long,  n, void **,g, int *,   d,
+                       int *,          s, int,    f)
+  LSS_INLINE _syscall3(int,     mprotect,        const void *,a,
+                       size_t,         l,        int,         p)
+  LSS_INLINE _syscall5(void*,   _mremap,         void*,       o,
+                       size_t,         os,       size_t,      ns,
+                       unsigned long,  f, void *, a)
+  #if defined(__NR_open)
+    // open is polyfilled below when not available.
+    LSS_INLINE _syscall3(int,     open,            const char*, p,
+                         int,            f, int,    m)
+  #endif
+  #if defined(__NR_poll)
+    // poll is polyfilled below when not available.
+    LSS_INLINE _syscall3(int,     poll,           struct kernel_pollfd*, u,
+                         unsigned int,   n, int,    t)
+  #endif
+  #if defined(__NR_ppoll)
+    LSS_INLINE _syscall5(int, ppoll, struct kernel_pollfd *, u,
+                         unsigned int, n, const struct kernel_timespec *, t,
+                         const struct kernel_sigset_t *, sigmask, size_t, s)
+  #endif
+  LSS_INLINE _syscall5(int,     prctl,           int,         option,
+                       unsigned long,  arg2,
+                       unsigned long,  arg3,
+                       unsigned long,  arg4,
+                       unsigned long,  arg5)
+  LSS_INLINE _syscall4(long,    ptrace,          int,         r,
+                       pid_t,          p, void *, a, void *, d)
+  #if defined(__NR_quotactl)
+    // Defined on x86_64 / i386 only
+    LSS_INLINE _syscall4(int,  quotactl,  int,  cmd,  const char *, special,
+                         int, id, caddr_t, addr)
+  #endif
+  LSS_INLINE _syscall3(ssize_t, read,            int,         f,
+                       void *,         b, size_t, c)
+  #if defined(__NR_readlink)
+    // readlink is polyfilled below when not available.
+    LSS_INLINE _syscall3(int,     readlink,        const char*, p,
+                         char*,          b, size_t, s)
+  #endif
+  #if defined(__NR_readlinkat)
+    LSS_INLINE _syscall4(int, readlinkat, int, d, const char *, p, char *, b,
+                         size_t, s)
+  #endif
+  LSS_INLINE _syscall4(int,     rt_sigaction,    int,         s,
+                       const struct kernel_sigaction*, a,
+                       struct kernel_sigaction*, o, size_t,   c)
+  LSS_INLINE _syscall2(int, rt_sigpending, struct kernel_sigset_t *, s,
+                       size_t,         c)
+  LSS_INLINE _syscall4(int, rt_sigprocmask,      int,         h,
+                       const struct kernel_sigset_t*,  s,
+                       struct kernel_sigset_t*,        o, size_t, c)
+  LSS_INLINE _syscall2(int, rt_sigsuspend,
+                       const struct kernel_sigset_t*, s,  size_t, c)
+  LSS_INLINE _syscall4(int, rt_sigtimedwait, const struct kernel_sigset_t*, s,
+                       siginfo_t*, i, const struct timespec*, t, size_t, c)
+  LSS_INLINE _syscall3(int,     sched_getaffinity,pid_t,      p,
+                       unsigned int,   l, unsigned long *, m)
+  LSS_INLINE _syscall3(int,     sched_setaffinity,pid_t,      p,
+                       unsigned int,   l, unsigned long *, m)
+  LSS_INLINE _syscall0(int,     sched_yield)
+  LSS_INLINE _syscall1(long,    set_tid_address, int *,       t)
+  LSS_INLINE _syscall1(int,     setfsgid,        gid_t,       g)
+  LSS_INLINE _syscall1(int,     setfsuid,        uid_t,       u)
+  LSS_INLINE _syscall1(int,     setuid,          uid_t,       u)
+  LSS_INLINE _syscall1(int,     setgid,          gid_t,       g)
+  LSS_INLINE _syscall2(int,     setpgid,         pid_t,       p,
+                       pid_t,          g)
+  LSS_INLINE _syscall3(int,     setpriority,     int,         a,
+                       int,            b, int,    p)
+  LSS_INLINE _syscall3(int,     setresgid,       gid_t,       r,
+                       gid_t,          e, gid_t,  s)
+  LSS_INLINE _syscall3(int,     setresuid,       uid_t,       r,
+                       uid_t,          e, uid_t,  s)
+  LSS_INLINE _syscall2(int,     setrlimit,       int,         r,
+                       const struct kernel_rlimit*, l)
+  LSS_INLINE _syscall0(pid_t,    setsid)
+  LSS_INLINE _syscall2(int,     sigaltstack,     const stack_t*, s,
+                       const stack_t*, o)
+  #if defined(__NR_sigreturn)
+    LSS_INLINE _syscall1(int,     sigreturn,       unsigned long, u)
+  #endif
+  #if defined(__NR_stat)
+    // stat and lstat are polyfilled below when not available.
+    LSS_INLINE _syscall2(int,     stat,            const char*, f,
+                        struct kernel_stat*,   b)
+  #endif
+  #if defined(__NR_lstat)
+    LSS_INLINE _syscall2(int,     lstat,           const char*, f,
+                         struct kernel_stat*,   b)
+  #endif
+  LSS_INLINE _syscall2(int,     statfs,          const char*, f,
+                      struct kernel_statfs*, b)
+  LSS_INLINE _syscall3(int,     tgkill,          pid_t,       p,
+                       pid_t,          t, int,            s)
+  LSS_INLINE _syscall2(int,     tkill,           pid_t,       p,
+                       int,            s)
+  #if defined(__NR_unlink)
+    // unlink is polyfilled below when not available.
+    LSS_INLINE _syscall1(int,     unlink,           const char*, f)
+  #endif
+  LSS_INLINE _syscall3(ssize_t, write,            int,        f,
+                       const void *,   b, size_t, c)
+  LSS_INLINE _syscall3(ssize_t, writev,           int,        f,
+                       const struct kernel_iovec*, v, size_t, c)
+  #if defined(__NR_getcpu)
+    LSS_INLINE _syscall3(long, getcpu, unsigned *, cpu,
+                         unsigned *, node, void *, unused)
+  #endif
+  #if defined(__x86_64__) || defined(__e2k__) ||                              \
+     (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32)
+    LSS_INLINE _syscall3(int, recvmsg,            int,   s,
+                        struct kernel_msghdr*,     m, int, f)
+    LSS_INLINE _syscall3(int, sendmsg,            int,   s,
+                         const struct kernel_msghdr*, m, int, f)
+    LSS_INLINE _syscall6(int, sendto,             int,   s,
+                         const void*,             m, size_t, l,
+                         int,                     f,
+                         const struct kernel_sockaddr*, a, int, t)
+    LSS_INLINE _syscall2(int, shutdown,           int,   s,
+                         int,                     h)
+    LSS_INLINE _syscall3(int, socket,             int,   d,
+                         int,                     t, int,       p)
+    LSS_INLINE _syscall4(int, socketpair,         int,   d,
+                         int,                     t, int,       p, int*, s)
+  #endif
+  #if defined(__NR_fadvise64)
+    #if defined(__x86_64__)
+    /* Need to make sure loff_t isn't truncated to 32-bits under x32.  */
+    LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset, loff_t len,
+                                       int advice) {
+      LSS_BODY(4, int, fadvise64, LSS_SYSCALL_ARG(fd), (uint64_t)(offset),
+                                  (uint64_t)(len), LSS_SYSCALL_ARG(advice));
+    }
+    #else
+    LSS_INLINE _syscall4(int, fadvise64,
+                         int, fd, loff_t, offset, loff_t, len, int, advice)
+    #endif
+  #elif defined(__i386__)
+    #define __NR__fadvise64_64 __NR_fadvise64_64
+    LSS_INLINE _syscall6(int, _fadvise64_64, int, fd,
+                         unsigned, offset_lo, unsigned, offset_hi,
+                         unsigned, len_lo, unsigned, len_hi,
+                         int, advice)
+
+    LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset,
+                                       loff_t len, int advice) {
+      return LSS_NAME(_fadvise64_64)(fd,
+                                     (unsigned)offset, (unsigned)(offset >>32),
+                                     (unsigned)len, (unsigned)(len >> 32),
+                                     advice);
+    }
+
+  #elif defined(__s390__) && !defined(__s390x__)
+    #define __NR__fadvise64_64 __NR_fadvise64_64
+    struct kernel_fadvise64_64_args {
+      int fd;
+      long long offset;
+      long long len;
+      int advice;
+    };
+
+    LSS_INLINE _syscall1(int, _fadvise64_64,
+                         struct kernel_fadvise64_64_args *args)
+
+    LSS_INLINE int LSS_NAME(fadvise64)(int fd, loff_t offset,
+                                       loff_t len, int advice) {
+      struct kernel_fadvise64_64_args args = { fd, offset, len, advice };
+      return LSS_NAME(_fadvise64_64)(&args);
+    }
+  #endif
+  #if defined(__NR_fallocate)
+    #if defined(__x86_64__)
+    /* Need to make sure loff_t isn't truncated to 32-bits under x32.  */
+    LSS_INLINE int LSS_NAME(fallocate)(int f, int mode, loff_t offset,
+                                       loff_t len) {
+      LSS_BODY(4, int, fallocate, LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(mode),
+                                  (uint64_t)(offset), (uint64_t)(len));
+    }
+    #elif (defined(__i386__) || (defined(__s390__) && !defined(__s390x__)) \
+           || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) \
+           || (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) \
+           || defined(__PPC__))
+    #define __NR__fallocate __NR_fallocate
+    LSS_INLINE _syscall6(int, _fallocate, int, fd,
+                         int, mode,
+                         unsigned, offset_lo, unsigned, offset_hi,
+                         unsigned, len_lo, unsigned, len_hi)
+
+    LSS_INLINE int LSS_NAME(fallocate)(int fd, int mode,
+                                       loff_t offset, loff_t len) {
+      union { loff_t off; unsigned w[2]; } o = { offset }, l = { len };
+      return LSS_NAME(_fallocate)(fd, mode, o.w[0], o.w[1], l.w[0], l.w[1]);
+    }
+    #else
+    LSS_INLINE _syscall4(int, fallocate,
+                         int, f, int, mode, loff_t, offset, loff_t, len)
+    #endif
+  #endif
+  #if defined(__NR_getrandom)
+    LSS_INLINE _syscall3(ssize_t, getrandom, void*, buffer, size_t, length,
+                         unsigned int, flags)
+  #endif
+  #if defined(__NR_newfstatat)
+    LSS_INLINE _syscall4(int, newfstatat,         int,   d,
+                         const char *,            p,
+                         struct kernel_stat*,     b, int, f)
+  #endif
+  #if defined(__x86_64__) || defined(__s390x__)
+    LSS_INLINE int LSS_NAME(getresgid32)(gid_t *rgid,
+                                         gid_t *egid,
+                                         gid_t *sgid) {
+      return LSS_NAME(getresgid)(rgid, egid, sgid);
+    }
+
+    LSS_INLINE int LSS_NAME(getresuid32)(uid_t *ruid,
+                                         uid_t *euid,
+                                         uid_t *suid) {
+      return LSS_NAME(getresuid)(ruid, euid, suid);
+    }
+
+    LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) {
+      return LSS_NAME(setfsgid)(gid);
+    }
+
+    LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) {
+      return LSS_NAME(setfsuid)(uid);
+    }
+
+    LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) {
+      return LSS_NAME(setresgid)(rgid, egid, sgid);
+    }
+
+    LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) {
+      return LSS_NAME(setresuid)(ruid, euid, suid);
+    }
+
+    LSS_INLINE int LSS_NAME(sigaction)(int signum,
+                                       const struct kernel_sigaction *act,
+                                       struct kernel_sigaction *oldact) {
+      #if defined(__x86_64__)
+      /* On x86_64, the kernel requires us to always set our own
+       * SA_RESTORER in order to be able to return from a signal handler.
+       * This function must have a "magic" signature that the "gdb"
+       * (and maybe the kernel?) can recognize.
+       */
+      if (act != NULL && !(act->sa_flags & SA_RESTORER)) {
+        struct kernel_sigaction a = *act;
+        a.sa_flags   |= SA_RESTORER;
+        a.sa_restorer = LSS_NAME(restore_rt)();
+        return LSS_NAME(rt_sigaction)(signum, &a, oldact,
+                                      (KERNEL_NSIG+7)/8);
+      } else
+      #endif
+        return LSS_NAME(rt_sigaction)(signum, act, oldact,
+                                      (KERNEL_NSIG+7)/8);
+    }
+
+    LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) {
+      return LSS_NAME(rt_sigpending)(set, (KERNEL_NSIG+7)/8);
+    }
+
+    LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) {
+      return LSS_NAME(rt_sigsuspend)(set, (KERNEL_NSIG+7)/8);
+    }
+  #endif
+  #if defined(__NR_rt_sigprocmask)
+    LSS_INLINE int LSS_NAME(sigprocmask)(int how,
+                                         const struct kernel_sigset_t *set,
+                                         struct kernel_sigset_t *oldset) {
+      return LSS_NAME(rt_sigprocmask)(how, set, oldset, (KERNEL_NSIG+7)/8);
+    }
+  #endif
+  #if defined(__NR_rt_sigtimedwait)
+    LSS_INLINE int LSS_NAME(sigtimedwait)(const struct kernel_sigset_t *set,
+                                          siginfo_t *info,
+                                          const struct timespec *timeout) {
+      return LSS_NAME(rt_sigtimedwait)(set, info, timeout, (KERNEL_NSIG+7)/8);
+    }
+  #endif
+  #if defined(__NR_wait4)
+    LSS_INLINE _syscall4(pid_t, wait4,            pid_t, p,
+                         int*,                    s, int,       o,
+                        struct kernel_rusage*,     r)
+  #endif
+  #if defined(__NR_openat)
+    LSS_INLINE _syscall4(int, openat, int, d, const char *, p, int, f, int, m)
+  #endif
+  #if defined(__NR_unlinkat)
+    LSS_INLINE _syscall3(int, unlinkat, int, d, const char *, p, int, f)
+  #endif
+  #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || \
+      (defined(__s390__) && !defined(__s390x__))
+    #define __NR__getresgid32 __NR_getresgid32
+    #define __NR__getresuid32 __NR_getresuid32
+    #define __NR__setfsgid32  __NR_setfsgid32
+    #define __NR__setfsuid32  __NR_setfsuid32
+    #define __NR__setresgid32 __NR_setresgid32
+    #define __NR__setresuid32 __NR_setresuid32
+#if defined(__ARM_EABI__)
+    LSS_INLINE _syscall2(int,   ugetrlimit,        int,          r,
+                        struct kernel_rlimit*, l)
+#endif
+    LSS_INLINE _syscall3(int,     _getresgid32,    gid_t *,      r,
+                         gid_t *,            e,    gid_t *,      s)
+    LSS_INLINE _syscall3(int,     _getresuid32,    uid_t *,      r,
+                         uid_t *,            e,    uid_t *,      s)
+    LSS_INLINE _syscall1(int,     _setfsgid32,     gid_t,        f)
+    LSS_INLINE _syscall1(int,     _setfsuid32,     uid_t,        f)
+    LSS_INLINE _syscall3(int,     _setresgid32,    gid_t,        r,
+                         gid_t,              e,    gid_t,        s)
+    LSS_INLINE _syscall3(int,     _setresuid32,    uid_t,        r,
+                         uid_t,              e,    uid_t,        s)
+
+    LSS_INLINE int LSS_NAME(getresgid32)(gid_t *rgid,
+                                         gid_t *egid,
+                                         gid_t *sgid) {
+      int rc;
+      if ((rc = LSS_NAME(_getresgid32)(rgid, egid, sgid)) < 0 &&
+          LSS_ERRNO == ENOSYS) {
+        if ((rgid == NULL) || (egid == NULL) || (sgid == NULL)) {
+          return EFAULT;
+        }
+        // Clear the high bits first, since getresgid only sets 16 bits
+        *rgid = *egid = *sgid = 0;
+        rc = LSS_NAME(getresgid)(rgid, egid, sgid);
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(getresuid32)(uid_t *ruid,
+                                         uid_t *euid,
+                                         uid_t *suid) {
+      int rc;
+      if ((rc = LSS_NAME(_getresuid32)(ruid, euid, suid)) < 0 &&
+          LSS_ERRNO == ENOSYS) {
+        if ((ruid == NULL) || (euid == NULL) || (suid == NULL)) {
+          return EFAULT;
+        }
+        // Clear the high bits first, since getresuid only sets 16 bits
+        *ruid = *euid = *suid = 0;
+        rc = LSS_NAME(getresuid)(ruid, euid, suid);
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(setfsgid32)(gid_t gid) {
+      int rc;
+      if ((rc = LSS_NAME(_setfsgid32)(gid)) < 0 &&
+          LSS_ERRNO == ENOSYS) {
+        if ((unsigned int)gid & ~0xFFFFu) {
+          rc = EINVAL;
+        } else {
+          rc = LSS_NAME(setfsgid)(gid);
+        }
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(setfsuid32)(uid_t uid) {
+      int rc;
+      if ((rc = LSS_NAME(_setfsuid32)(uid)) < 0 &&
+          LSS_ERRNO == ENOSYS) {
+        if ((unsigned int)uid & ~0xFFFFu) {
+          rc = EINVAL;
+        } else {
+          rc = LSS_NAME(setfsuid)(uid);
+        }
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(setresgid32)(gid_t rgid, gid_t egid, gid_t sgid) {
+      int rc;
+      if ((rc = LSS_NAME(_setresgid32)(rgid, egid, sgid)) < 0 &&
+          LSS_ERRNO == ENOSYS) {
+        if ((unsigned int)rgid & ~0xFFFFu ||
+            (unsigned int)egid & ~0xFFFFu ||
+            (unsigned int)sgid & ~0xFFFFu) {
+          rc = EINVAL;
+        } else {
+          rc = LSS_NAME(setresgid)(rgid, egid, sgid);
+        }
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(setresuid32)(uid_t ruid, uid_t euid, uid_t suid) {
+      int rc;
+      if ((rc = LSS_NAME(_setresuid32)(ruid, euid, suid)) < 0 &&
+          LSS_ERRNO == ENOSYS) {
+        if ((unsigned int)ruid & ~0xFFFFu ||
+            (unsigned int)euid & ~0xFFFFu ||
+            (unsigned int)suid & ~0xFFFFu) {
+          rc = EINVAL;
+        } else {
+          rc = LSS_NAME(setresuid)(ruid, euid, suid);
+        }
+      }
+      return rc;
+    }
+  #endif
+  LSS_INLINE int LSS_NAME(sigemptyset)(struct kernel_sigset_t *set) {
+    memset(&set->sig, 0, sizeof(set->sig));
+    return 0;
+  }
+
+  LSS_INLINE int LSS_NAME(sigfillset)(struct kernel_sigset_t *set) {
+    memset(&set->sig, -1, sizeof(set->sig));
+    return 0;
+  }
+
+  LSS_INLINE int LSS_NAME(sigaddset)(struct kernel_sigset_t *set,
+                                     int signum) {
+    if (signum < 1 || signum > (int)(8*sizeof(set->sig))) {
+      LSS_ERRNO = EINVAL;
+      return -1;
+    } else {
+      set->sig[(signum - 1)/(8*sizeof(set->sig[0]))]
+          |= 1UL << ((signum - 1) % (8*sizeof(set->sig[0])));
+      return 0;
+    }
+  }
+
+  LSS_INLINE int LSS_NAME(sigdelset)(struct kernel_sigset_t *set,
+                                        int signum) {
+    if (signum < 1 || signum > (int)(8*sizeof(set->sig))) {
+      LSS_ERRNO = EINVAL;
+      return -1;
+    } else {
+      set->sig[(signum - 1)/(8*sizeof(set->sig[0]))]
+          &= ~(1UL << ((signum - 1) % (8*sizeof(set->sig[0]))));
+      return 0;
+    }
+  }
+
+  LSS_INLINE int LSS_NAME(sigismember)(struct kernel_sigset_t *set,
+                                          int signum) {
+    if (signum < 1 || signum > (int)(8*sizeof(set->sig))) {
+      LSS_ERRNO = EINVAL;
+      return -1;
+    } else {
+      return !!(set->sig[(signum - 1)/(8*sizeof(set->sig[0]))] &
+                (1UL << ((signum - 1) % (8*sizeof(set->sig[0])))));
+    }
+  }
+  #if defined(__i386__) ||                                                    \
+      defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) ||                     \
+     (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) ||                   \
+      defined(__PPC__) ||                                                     \
+     (defined(__s390__) && !defined(__s390x__)) || defined(__e2k__)
+    #define __NR__sigaction   __NR_sigaction
+    #define __NR__sigpending  __NR_sigpending
+    #define __NR__sigsuspend  __NR_sigsuspend
+    #define __NR__socketcall  __NR_socketcall
+    LSS_INLINE _syscall2(int, fstat64,             int, f,
+                         struct kernel_stat64 *, b)
+    LSS_INLINE _syscall5(int, _llseek,     uint, fd,
+                         unsigned long, hi, unsigned long, lo,
+                         loff_t *, res, uint, wh)
+#if defined(__s390__) && !defined(__s390x__)
+    /* On s390, mmap2() arguments are passed in memory. */
+    LSS_INLINE void* LSS_NAME(_mmap2)(void *s, size_t l, int p, int f, int d,
+                                      off_t o) {
+      unsigned long buf[6] = { (unsigned long) s, (unsigned long) l,
+                               (unsigned long) p, (unsigned long) f,
+                               (unsigned long) d, (unsigned long) o };
+      LSS_REG(2, buf);
+      LSS_BODY(void*, mmap2, "0"(__r2));
+    }
+#else
+    #define __NR__mmap2 __NR_mmap2
+    LSS_INLINE _syscall6(void*, _mmap2,            void*, s,
+                         size_t,                   l, int,               p,
+                         int,                      f, int,               d,
+                         off_t,                    o)
+#endif
+    LSS_INLINE _syscall3(int,   _sigaction,        int,   s,
+                         const struct kernel_old_sigaction*,  a,
+                         struct kernel_old_sigaction*,        o)
+    LSS_INLINE _syscall1(int,   _sigpending, unsigned long*, s)
+    #ifdef __PPC__
+    LSS_INLINE _syscall1(int, _sigsuspend,         unsigned long, s)
+    #else
+    LSS_INLINE _syscall3(int, _sigsuspend,         const void*, a,
+                         int,                      b,
+                         unsigned long,            s)
+    #endif
+    LSS_INLINE _syscall2(int, stat64,              const char *, p,
+                         struct kernel_stat64 *, b)
+
+    LSS_INLINE int LSS_NAME(sigaction)(int signum,
+                                       const struct kernel_sigaction *act,
+                                       struct kernel_sigaction *oldact) {
+      int old_errno = LSS_ERRNO;
+      int rc;
+      struct kernel_sigaction a;
+      if (act != NULL) {
+        a             = *act;
+        #ifdef __i386__
+        /* On i386, the kernel requires us to always set our own
+         * SA_RESTORER when using realtime signals. Otherwise, it does not
+         * know how to return from a signal handler. This function must have
+         * a "magic" signature that the "gdb" (and maybe the kernel?) can
+         * recognize.
+         * Apparently, a SA_RESTORER is implicitly set by the kernel, when
+         * using non-realtime signals.
+         *
+         * TODO: Test whether ARM needs a restorer
+         */
+        if (!(a.sa_flags & SA_RESTORER)) {
+          a.sa_flags   |= SA_RESTORER;
+          a.sa_restorer = (a.sa_flags & SA_SIGINFO)
+                          ? LSS_NAME(restore_rt)() : LSS_NAME(restore)();
+        }
+        #endif
+      }
+      rc = LSS_NAME(rt_sigaction)(signum, act ? &a : act, oldact,
+                                  (KERNEL_NSIG+7)/8);
+      if (rc < 0 && LSS_ERRNO == ENOSYS) {
+        struct kernel_old_sigaction oa, ooa, *ptr_a = &oa, *ptr_oa = &ooa;
+        if (!act) {
+          ptr_a            = NULL;
+        } else {
+          oa.sa_handler_   = act->sa_handler_;
+          memcpy(&oa.sa_mask, &act->sa_mask, sizeof(oa.sa_mask));
+          #ifndef __mips__
+          oa.sa_restorer   = act->sa_restorer;
+          #endif
+          oa.sa_flags      = act->sa_flags;
+        }
+        if (!oldact) {
+          ptr_oa           = NULL;
+        }
+        LSS_ERRNO = old_errno;
+        rc = LSS_NAME(_sigaction)(signum, ptr_a, ptr_oa);
+        if (rc == 0 && oldact) {
+          if (act) {
+            memcpy(oldact, act, sizeof(*act));
+          } else {
+            memset(oldact, 0, sizeof(*oldact));
+          }
+          oldact->sa_handler_    = ptr_oa->sa_handler_;
+          oldact->sa_flags       = ptr_oa->sa_flags;
+          memcpy(&oldact->sa_mask, &ptr_oa->sa_mask, sizeof(ptr_oa->sa_mask));
+          #ifndef __mips__
+          oldact->sa_restorer    = ptr_oa->sa_restorer;
+          #endif
+        }
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(sigpending)(struct kernel_sigset_t *set) {
+      int old_errno = LSS_ERRNO;
+      int rc = LSS_NAME(rt_sigpending)(set, (KERNEL_NSIG+7)/8);
+      if (rc < 0 && LSS_ERRNO == ENOSYS) {
+        LSS_ERRNO = old_errno;
+        LSS_NAME(sigemptyset)(set);
+        rc = LSS_NAME(_sigpending)(&set->sig[0]);
+      }
+      return rc;
+    }
+
+    LSS_INLINE int LSS_NAME(sigsuspend)(const struct kernel_sigset_t *set) {
+      int olderrno = LSS_ERRNO;
+      int rc = LSS_NAME(rt_sigsuspend)(set, (KERNEL_NSIG+7)/8);
+      if (rc < 0 && LSS_ERRNO == ENOSYS) {
+        LSS_ERRNO = olderrno;
+        rc = LSS_NAME(_sigsuspend)(
+        #ifndef __PPC__
+                                   set, 0,
+        #endif
+                                   set->sig[0]);
+      }
+      return rc;
+    }
+  #endif
+  #if defined(__i386__) ||                                                    \
+      defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) ||                     \
+     (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) ||                   \
+      defined(__PPC__) ||                                                     \
+     (defined(__s390__) && !defined(__s390x__))
+    /* On these architectures, implement mmap() with mmap2(). */
+    LSS_INLINE void* LSS_NAME(mmap)(void *s, size_t l, int p, int f, int d,
+                                    int64_t o) {
+      if (o % 4096) {
+        LSS_ERRNO = EINVAL;
+        return (void *) -1;
+      }
+      return LSS_NAME(_mmap2)(s, l, p, f, d, (o / 4096));
+    }
+  #elif defined(__s390x__)
+    /* On s390x, mmap() arguments are passed in memory. */
+    LSS_INLINE void* LSS_NAME(mmap)(void *s, size_t l, int p, int f, int d,
+                                    int64_t o) {
+      unsigned long buf[6] = { (unsigned long) s, (unsigned long) l,
+                               (unsigned long) p, (unsigned long) f,
+                               (unsigned long) d, (unsigned long) o };
+      LSS_REG(2, buf);
+      LSS_BODY(void*, mmap, "0"(__r2));
+    }
+  #elif defined(__x86_64__)
+    /* Need to make sure __off64_t isn't truncated to 32-bits under x32.  */
+    LSS_INLINE void* LSS_NAME(mmap)(void *s, size_t l, int p, int f, int d,
+                                    int64_t o) {
+      LSS_BODY(6, void*, mmap, LSS_SYSCALL_ARG(s), LSS_SYSCALL_ARG(l),
+                               LSS_SYSCALL_ARG(p), LSS_SYSCALL_ARG(f),
+                               LSS_SYSCALL_ARG(d), (uint64_t)(o));
+    }
+  #else
+    /* Remaining 64-bit architectures. */
+    LSS_INLINE _syscall6(void*, mmap, void*, addr, size_t, length, int, prot,
+                         int, flags, int, fd, int64_t, offset)
+  #endif
+  #if defined(__PPC__)
+    #undef LSS_SC_LOADARGS_0
+    #define LSS_SC_LOADARGS_0(dummy...)
+    #undef LSS_SC_LOADARGS_1
+    #define LSS_SC_LOADARGS_1(arg1)                                           \
+        __sc_4  = (unsigned long) (arg1)
+    #undef LSS_SC_LOADARGS_2
+    #define LSS_SC_LOADARGS_2(arg1, arg2)                                     \
+        LSS_SC_LOADARGS_1(arg1);                                              \
+        __sc_5  = (unsigned long) (arg2)
+    #undef LSS_SC_LOADARGS_3
+    #define LSS_SC_LOADARGS_3(arg1, arg2, arg3)                               \
+        LSS_SC_LOADARGS_2(arg1, arg2);                                        \
+        __sc_6  = (unsigned long) (arg3)
+    #undef LSS_SC_LOADARGS_4
+    #define LSS_SC_LOADARGS_4(arg1, arg2, arg3, arg4)                         \
+        LSS_SC_LOADARGS_3(arg1, arg2, arg3);                                  \
+        __sc_7  = (unsigned long) (arg4)
+    #undef LSS_SC_LOADARGS_5
+    #define LSS_SC_LOADARGS_5(arg1, arg2, arg3, arg4, arg5)                   \
+        LSS_SC_LOADARGS_4(arg1, arg2, arg3, arg4);                            \
+        __sc_8  = (unsigned long) (arg5)
+    #undef LSS_SC_BODY
+    #define LSS_SC_BODY(nr, type, opt, args...)                               \
+        long __sc_ret, __sc_err;                                              \
+        {                                                                     \
+          register unsigned long __sc_0 __asm__ ("r0") = __NR_socketcall;     \
+          register unsigned long __sc_3 __asm__ ("r3") = opt;                 \
+          register unsigned long __sc_4 __asm__ ("r4");                       \
+          register unsigned long __sc_5 __asm__ ("r5");                       \
+          register unsigned long __sc_6 __asm__ ("r6");                       \
+          register unsigned long __sc_7 __asm__ ("r7");                       \
+          register unsigned long __sc_8 __asm__ ("r8");                       \
+          LSS_SC_LOADARGS_##nr(args);                                         \
+          __asm__ __volatile__                                                \
+              ("stwu 1, -48(1)\n\t"                                           \
+               "stw 4, 20(1)\n\t"                                             \
+               "stw 5, 24(1)\n\t"                                             \
+               "stw 6, 28(1)\n\t"                                             \
+               "stw 7, 32(1)\n\t"                                             \
+               "stw 8, 36(1)\n\t"                                             \
+               "addi 4, 1, 20\n\t"                                            \
+               "sc\n\t"                                                       \
+               "mfcr %0"                                                      \
+                 : "=&r" (__sc_0),                                            \
+                   "=&r" (__sc_3), "=&r" (__sc_4),                            \
+                   "=&r" (__sc_5), "=&r" (__sc_6),                            \
+                   "=&r" (__sc_7), "=&r" (__sc_8)                             \
+                 : LSS_ASMINPUT_##nr                                          \
+                 : "cr0", "ctr", "memory");                                   \
+          __sc_ret = __sc_3;                                                  \
+          __sc_err = __sc_0;                                                  \
+        }                                                                     \
+        LSS_RETURN(type, __sc_ret, __sc_err)
+
+    LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg,
+                                         int flags){
+      LSS_SC_BODY(3, ssize_t, 17, s, msg, flags);
+    }
+
+    LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s,
+                                         const struct kernel_msghdr *msg,
+                                         int flags) {
+      LSS_SC_BODY(3, ssize_t, 16, s, msg, flags);
+    }
+
+    // TODO(csilvers): why is this ifdef'ed out?
+#if 0
+    LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len,
+                                        int flags,
+                                        const struct kernel_sockaddr *to,
+                                        unsigned int tolen) {
+      LSS_BODY(6, ssize_t, 11, s, buf, len, flags, to, tolen);
+    }
+#endif
+
+    LSS_INLINE int LSS_NAME(shutdown)(int s, int how) {
+      LSS_SC_BODY(2, int, 13, s, how);
+    }
+
+    LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) {
+      LSS_SC_BODY(3, int, 1, domain, type, protocol);
+    }
+
+    LSS_INLINE int LSS_NAME(socketpair)(int d, int type, int protocol,
+                                        int sv[2]) {
+      LSS_SC_BODY(4, int, 8, d, type, protocol, sv);
+    }
+  #endif
+  #if defined(__ARM_EABI__) || defined (__aarch64__)
+    LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg,
+                         int, flags)
+    LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*,
+                         msg, int, flags)
+    LSS_INLINE _syscall6(ssize_t, sendto, int, s, const void*, buf, size_t,len,
+                         int, flags, const struct kernel_sockaddr*, to,
+                         unsigned int, tolen)
+    LSS_INLINE _syscall2(int, shutdown, int, s, int, how)
+    LSS_INLINE _syscall3(int, socket, int, domain, int, type, int, protocol)
+    LSS_INLINE _syscall4(int, socketpair, int, d, int, type, int, protocol,
+                         int*, sv)
+  #endif
+  #if defined(__i386__) || defined(__ARM_ARCH_3__) ||                         \
+      (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) ||                  \
+      defined(__s390__)
+    #define __NR__socketcall  __NR_socketcall
+    LSS_INLINE _syscall2(int,      _socketcall,    int,   c,
+                         va_list,                  a)
+    LSS_INLINE int LSS_NAME(socketcall)(int op, ...) {
+      int rc;
+      va_list ap;
+      va_start(ap, op);
+      rc = LSS_NAME(_socketcall)(op, ap);
+      va_end(ap);
+      return rc;
+    }
+
+    LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg,
+                                         int flags){
+      return (ssize_t)LSS_NAME(socketcall)(17, s, msg, flags);
+    }
+
+    LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s,
+                                         const struct kernel_msghdr *msg,
+                                         int flags) {
+      return (ssize_t)LSS_NAME(socketcall)(16, s, msg, flags);
+    }
+
+    LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len,
+                                        int flags,
+                                        const struct kernel_sockaddr *to,
+                                        unsigned int tolen) {
+      return (ssize_t)LSS_NAME(socketcall)(11, s, buf, len, flags, to, tolen);
+    }
+
+    LSS_INLINE int LSS_NAME(shutdown)(int s, int how) {
+      return LSS_NAME(socketcall)(13, s, how);
+    }
+
+    LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) {
+      return LSS_NAME(socketcall)(1, domain, type, protocol);
+    }
+
+    LSS_INLINE int LSS_NAME(socketpair)(int d, int type, int protocol,
+                                        int sv[2]) {
+      return LSS_NAME(socketcall)(8, d, type, protocol, sv);
+    }
+  #endif
+  #if defined(__NR_fstatat64)
+    LSS_INLINE _syscall4(int,   fstatat64,        int,   d,
+                         const char *,      p,
+                         struct kernel_stat64 *,   b,    int,   f)
+  #endif
+  #if defined(__NR_waitpid)
+    // waitpid is polyfilled below when not available.
+    LSS_INLINE _syscall3(pid_t, waitpid,          pid_t, p,
+                         int*,              s,    int,   o)
+  #endif
+  #if defined(__mips__)
+    /* sys_pipe() on MIPS has non-standard calling conventions, as it returns
+     * both file handles through CPU registers.
+     */
+    LSS_INLINE int LSS_NAME(pipe)(int *p) {
+      register unsigned long __v0 __asm__("$2") = __NR_pipe;
+      register unsigned long __v1 __asm__("$3");
+      register unsigned long __r7 __asm__("$7");
+      __asm__ __volatile__ ("syscall\n"
+                            : "=r"(__v0), "=r"(__v1), "=r" (__r7)
+                            : "0"(__v0)
+                            : "$8", "$9", "$10", "$11", "$12",
+                              "$13", "$14", "$15", "$24", "$25", "memory");
+      if (__r7) {
+        unsigned long __errnovalue = __v0;
+        LSS_ERRNO = __errnovalue;
+        return -1;
+      } else {
+        p[0] = __v0;
+        p[1] = __v1;
+        return 0;
+      }
+    }
+  #elif defined(__NR_pipe)
+    // pipe is polyfilled below when not available.
+    LSS_INLINE _syscall1(int,     pipe,           int *, p)
+  #endif
+  #if defined(__NR_pipe2)
+    LSS_INLINE _syscall2(int, pipe2, int *, pipefd, int, flags)
+  #endif
+  /* TODO(csilvers): see if ppc can/should support this as well              */
+  #if defined(__i386__) || defined(__ARM_ARCH_3__) ||                         \
+      defined(__ARM_EABI__) ||                                                \
+     (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64) ||                   \
+     (defined(__s390__) && !defined(__s390x__))
+    #define __NR__statfs64  __NR_statfs64
+    #define __NR__fstatfs64 __NR_fstatfs64
+    LSS_INLINE _syscall3(int, _statfs64,     const char*, p,
+                         size_t, s,struct kernel_statfs64*, b)
+    LSS_INLINE _syscall3(int, _fstatfs64,          int,   f,
+                         size_t, s,struct kernel_statfs64*, b)
+    LSS_INLINE int LSS_NAME(statfs64)(const char *p,
+                                     struct kernel_statfs64 *b) {
+      return LSS_NAME(_statfs64)(p, sizeof(*b), b);
+    }
+    LSS_INLINE int LSS_NAME(fstatfs64)(int f,struct kernel_statfs64 *b) {
+      return LSS_NAME(_fstatfs64)(f, sizeof(*b), b);
+    }
+  #endif
+
+  LSS_INLINE int LSS_NAME(execv)(const char *path, const char *const argv[]) {
+    extern char **environ;
+    return LSS_NAME(execve)(path, argv, (const char *const *)environ);
+  }
+
+  LSS_INLINE pid_t LSS_NAME(gettid)(void) {
+    pid_t tid = LSS_NAME(_gettid)();
+    if (tid != -1) {
+      return tid;
+    }
+    return LSS_NAME(getpid)();
+  }
+
+  LSS_INLINE void *LSS_NAME(mremap)(void *old_address, size_t old_size,
+                                    size_t new_size, int flags, ...) {
+    va_list ap;
+    void *new_address, *rc;
+    va_start(ap, flags);
+    new_address = va_arg(ap, void *);
+    rc = LSS_NAME(_mremap)(old_address, old_size, new_size,
+                           flags, new_address);
+    va_end(ap);
+    return rc;
+  }
+
+  LSS_INLINE int LSS_NAME(ptrace_detach)(pid_t pid) {
+    /* PTRACE_DETACH can sometimes forget to wake up the tracee and it
+     * then sends job control signals to the real parent, rather than to
+     * the tracer. We reduce the risk of this happening by starting a
+     * whole new time slice, and then quickly sending a SIGCONT signal
+     * right after detaching from the tracee.
+     *
+     * We use tkill to ensure that we only issue a wakeup for the thread being
+     * detached.  Large multi threaded apps can take a long time in the kernel
+     * processing SIGCONT.
+     */
+    int rc, err;
+    LSS_NAME(sched_yield)();
+    rc = LSS_NAME(ptrace)(PTRACE_DETACH, pid, (void *)0, (void *)0);
+    err = LSS_ERRNO;
+    LSS_NAME(tkill)(pid, SIGCONT);
+    /* Old systems don't have tkill */
+    if (LSS_ERRNO == ENOSYS)
+      LSS_NAME(kill)(pid, SIGCONT);
+    LSS_ERRNO = err;
+    return rc;
+  }
+
+  LSS_INLINE int LSS_NAME(raise)(int sig) {
+    return LSS_NAME(kill)(LSS_NAME(getpid)(), sig);
+  }
+
+  LSS_INLINE int LSS_NAME(setpgrp)(void) {
+    return LSS_NAME(setpgid)(0, 0);
+  }
+
+  #if defined(__x86_64__)
+    /* Need to make sure loff_t isn't truncated to 32-bits under x32.  */
+    LSS_INLINE ssize_t LSS_NAME(pread64)(int f, void *b, size_t c, loff_t o) {
+      LSS_BODY(4, ssize_t, pread64, LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(b),
+                                    LSS_SYSCALL_ARG(c), (uint64_t)(o));
+    }
+
+    LSS_INLINE ssize_t LSS_NAME(pwrite64)(int f, const void *b, size_t c,
+                                          loff_t o) {
+      LSS_BODY(4, ssize_t, pwrite64, LSS_SYSCALL_ARG(f), LSS_SYSCALL_ARG(b),
+                                     LSS_SYSCALL_ARG(c), (uint64_t)(o));
+    }
+
+    LSS_INLINE int LSS_NAME(readahead)(int f, loff_t o, unsigned c) {
+      LSS_BODY(3, int, readahead, LSS_SYSCALL_ARG(f), (uint64_t)(o),
+                                  LSS_SYSCALL_ARG(c));
+    }
+  #elif defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI64
+    LSS_INLINE _syscall4(ssize_t, pread64,        int,         f,
+                         void *,         b, size_t,   c,
+                         loff_t,         o)
+    LSS_INLINE _syscall4(ssize_t, pwrite64,       int,         f,
+                         const void *,   b, size_t,   c,
+                         loff_t,         o)
+    LSS_INLINE _syscall3(int,     readahead,      int,         f,
+                         loff_t,         o, unsigned, c)
+  #else
+    #define __NR__pread64   __NR_pread64
+    #define __NR__pwrite64  __NR_pwrite64
+    #define __NR__readahead __NR_readahead
+    #if defined(__ARM_EABI__) || defined(__mips__)
+      /* On ARM and MIPS, a 64-bit parameter has to be in an even-odd register
+       * pair. Hence these calls ignore their fourth argument (r3) so that their
+       * fifth and sixth make such a pair (r4,r5).
+       */
+      #define LSS_LLARG_PAD 0,
+      LSS_INLINE _syscall6(ssize_t, _pread64,        int,         f,
+                           void *,         b, size_t, c,
+                           unsigned, skip, unsigned, o1, unsigned, o2)
+      LSS_INLINE _syscall6(ssize_t, _pwrite64,       int,         f,
+                           const void *,   b, size_t, c,
+                           unsigned, skip, unsigned, o1, unsigned, o2)
+      LSS_INLINE _syscall5(int, _readahead,          int,         f,
+                           unsigned,     skip,
+                           unsigned,       o1, unsigned, o2, size_t, c)
+    #else
+      #define LSS_LLARG_PAD
+      LSS_INLINE _syscall5(ssize_t, _pread64,        int,         f,
+                           void *,         b, size_t, c, unsigned, o1,
+                           unsigned, o2)
+      LSS_INLINE _syscall5(ssize_t, _pwrite64,       int,         f,
+                           const void *,   b, size_t, c, unsigned, o1,
+                           long, o2)
+      LSS_INLINE _syscall4(int, _readahead,          int,         f,
+                           unsigned,       o1, unsigned, o2, size_t, c)
+    #endif
+    /* We force 64bit-wide parameters onto the stack, then access each
+     * 32-bit component individually. This guarantees that we build the
+     * correct parameters independent of the native byte-order of the
+     * underlying architecture.
+     */
+    LSS_INLINE ssize_t LSS_NAME(pread64)(int fd, void *buf, size_t count,
+                                         loff_t off) {
+      union { loff_t off; unsigned arg[2]; } o = { off };
+      return LSS_NAME(_pread64)(fd, buf, count,
+                                LSS_LLARG_PAD o.arg[0], o.arg[1]);
+    }
+    LSS_INLINE ssize_t LSS_NAME(pwrite64)(int fd, const void *buf,
+                                          size_t count, loff_t off) {
+      union { loff_t off; unsigned arg[2]; } o = { off };
+      return LSS_NAME(_pwrite64)(fd, buf, count,
+                                 LSS_LLARG_PAD o.arg[0], o.arg[1]);
+    }
+    LSS_INLINE int LSS_NAME(readahead)(int fd, loff_t off, int len) {
+      union { loff_t off; unsigned arg[2]; } o = { off };
+      return LSS_NAME(_readahead)(fd, LSS_LLARG_PAD o.arg[0], o.arg[1], len);
+    }
+  #endif
+#endif
+
+/*
+ * Polyfills for deprecated syscalls.
+ */
+
+#if !defined(__NR_dup2)
+  LSS_INLINE int LSS_NAME(dup2)(int s, int d) {
+    return LSS_NAME(dup3)(s, d, 0);
+  }
+#endif
+
+#if !defined(__NR_open)
+  LSS_INLINE int LSS_NAME(open)(const char *pathname, int flags, int mode) {
+    return LSS_NAME(openat)(AT_FDCWD, pathname, flags, mode);
+  }
+#endif
+
+#if !defined(__NR_unlink)
+  LSS_INLINE int LSS_NAME(unlink)(const char *pathname) {
+    return LSS_NAME(unlinkat)(AT_FDCWD, pathname, 0);
+  }
+#endif
+
+#if !defined(__NR_readlink)
+  LSS_INLINE int LSS_NAME(readlink)(const char *pathname, char *buffer,
+                                    size_t size) {
+    return LSS_NAME(readlinkat)(AT_FDCWD, pathname, buffer, size);
+  }
+#endif
+
+#if !defined(__NR_pipe)
+  LSS_INLINE int LSS_NAME(pipe)(int *pipefd) {
+    return LSS_NAME(pipe2)(pipefd, 0);
+  }
+#endif
+
+#if !defined(__NR_poll)
+  LSS_INLINE int LSS_NAME(poll)(struct kernel_pollfd *fds, unsigned int nfds,
+                                int timeout) {
+   struct kernel_timespec timeout_ts;
+   struct kernel_timespec *timeout_ts_p = NULL;
+
+    if (timeout >= 0) {
+      timeout_ts.tv_sec = timeout / 1000;
+      timeout_ts.tv_nsec = (timeout % 1000) * 1000000;
+      timeout_ts_p = &timeout_ts;
+    }
+    return LSS_NAME(ppoll)(fds, nfds, timeout_ts_p, NULL, 0);
+  }
+#endif
+
+#if !defined(__NR_stat)
+  LSS_INLINE int LSS_NAME(stat)(const char *pathname,
+                                struct kernel_stat *buf) {
+    return LSS_NAME(newfstatat)(AT_FDCWD, pathname, buf, 0);
+  }
+#endif
+#if !defined(__NR_lstat)
+  LSS_INLINE int LSS_NAME(lstat)(const char *pathname,
+                                 struct kernel_stat *buf) {
+    return LSS_NAME(newfstatat)(AT_FDCWD, pathname, buf, AT_SYMLINK_NOFOLLOW);
+  }
+#endif
+
+#if !defined(__NR_waitpid)
+  LSS_INLINE pid_t LSS_NAME(waitpid)(pid_t pid, int *status, int options) {
+    return LSS_NAME(wait4)(pid, status, options, 0);
+  }
+#endif
+
+#if !defined(__NR_fork)
+// TODO: define this in an arch-independant way instead of inlining the clone
+//       syscall body.
+
+# if defined(__aarch64__)
+  LSS_INLINE pid_t LSS_NAME(fork)(void) {
+    // No fork syscall on aarch64 - implement by means of the clone syscall.
+    // Note that this does not reset glibc's cached view of the PID/TID, so
+    // some glibc interfaces might go wrong in the forked subprocess.
+    int flags = SIGCHLD;
+    void *child_stack = NULL;
+    void *parent_tidptr = NULL;
+    void *newtls = NULL;
+    void *child_tidptr = NULL;
+
+    LSS_REG(0, flags);
+    LSS_REG(1, child_stack);
+    LSS_REG(2, parent_tidptr);
+    LSS_REG(3, newtls);
+    LSS_REG(4, child_tidptr);
+    LSS_BODY(pid_t, clone, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),
+             "r"(__r4));
+  }
+# elif defined(__x86_64__)
+  LSS_INLINE pid_t LSS_NAME(fork)(void) {
+    // Android disallows the fork syscall on x86_64 - implement by means of the
+    // clone syscall as above for aarch64.
+    int flags = SIGCHLD;
+    void *child_stack = NULL;
+    void *parent_tidptr = NULL;
+    void *newtls = NULL;
+    void *child_tidptr = NULL;
+
+    LSS_BODY(5, pid_t, clone, LSS_SYSCALL_ARG(flags),
+             LSS_SYSCALL_ARG(child_stack), LSS_SYSCALL_ARG(parent_tidptr),
+             LSS_SYSCALL_ARG(newtls), LSS_SYSCALL_ARG(child_tidptr));
+  }
+# else
+#  error missing fork polyfill for this architecture
+# endif
+#endif
+
+/* These restore the original values of these macros saved by the
+ * corresponding #pragma push_macro near the top of this file. */
+#pragma pop_macro("stat64")
+#pragma pop_macro("fstat64")
+#pragma pop_macro("lstat64")
+#pragma pop_macro("pread64")
+#pragma pop_macro("pwrite64")
+#pragma pop_macro("getdents64")
+
+#if defined(__cplusplus) && !defined(SYS_CPLUSPLUS)
+}
+#endif
+
+#endif
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/LICENSE b/app/src/main/cpp/shadowhook/third_party/xdl/LICENSE
new file mode 100644
index 0000000..c20d2c8
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020-2023 HexHacking Team
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl.c b/app/src/main/cpp/shadowhook/third_party/xdl/xdl.c
new file mode 100644
index 0000000..6dc743e
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl.c
@@ -0,0 +1,916 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-10-04.
+
+#include "xdl.h"
+
+#include <android/api-level.h>
+#include <elf.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <link.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/auxv.h>
+#include <sys/mman.h>
+#include <sys/prctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "xdl_iterate.h"
+#include "xdl_linker.h"
+#include "xdl_lzma.h"
+#include "xdl_util.h"
+
+#ifndef __LP64__
+#define XDL_LIB_PATH "/system/lib"
+#else
+#define XDL_LIB_PATH "/system/lib64"
+#endif
+
+#define XDL_DYNSYM_IS_EXPORT_SYM(shndx) (SHN_UNDEF != (shndx))
+#define XDL_SYMTAB_IS_EXPORT_SYM(shndx) \
+  (SHN_UNDEF != (shndx) && !((shndx) >= SHN_LORESERVE && (shndx) <= SHN_HIRESERVE))
+
+extern __attribute((weak)) unsigned long int getauxval(unsigned long int);
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+
+typedef struct xdl {
+  char *pathname;
+  uintptr_t load_bias;
+  const ElfW(Phdr) *dlpi_phdr;
+  ElfW(Half) dlpi_phnum;
+
+  struct xdl *next;     // to next xdl obj for cache in xdl_addr()
+  void *linker_handle;  // hold handle returned by xdl_linker_force_dlopen()
+
+  //
+  // (1) for searching symbols from .dynsym
+  //
+
+  bool dynsym_try_load;
+  ElfW(Sym) *dynsym;   // .dynsym
+  const char *dynstr;  // .dynstr
+
+  // .hash (SYSV hash for .dynstr)
+  struct {
+    const uint32_t *buckets;
+    uint32_t buckets_cnt;
+    const uint32_t *chains;
+    uint32_t chains_cnt;
+  } sysv_hash;
+
+  // .gnu.hash (GNU hash for .dynstr)
+  struct {
+    const uint32_t *buckets;
+    uint32_t buckets_cnt;
+    const uint32_t *chains;
+    uint32_t symoffset;
+    const ElfW(Addr) *bloom;
+    uint32_t bloom_cnt;
+    uint32_t bloom_shift;
+  } gnu_hash;
+
+  //
+  // (2) for searching symbols from .symtab
+  //
+
+  bool symtab_try_load;
+  uintptr_t base;
+
+  ElfW(Sym) *symtab;  // .symtab
+  size_t symtab_cnt;
+  char *strtab;  // .strtab
+  size_t strtab_sz;
+} xdl_t;
+
+#pragma clang diagnostic pop
+
+// load from memory
+static int xdl_dynsym_load(xdl_t *self) {
+  // find the dynamic segment
+  ElfW(Dyn) *dynamic = NULL;
+  for (size_t i = 0; i < self->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(self->dlpi_phdr[i]);
+    if (PT_DYNAMIC == phdr->p_type) {
+      dynamic = (ElfW(Dyn) *)(self->load_bias + phdr->p_vaddr);
+      break;
+    }
+  }
+  if (NULL == dynamic) return -1;
+
+  // iterate the dynamic segment
+  for (ElfW(Dyn) *entry = dynamic; entry && entry->d_tag != DT_NULL; entry++) {
+    switch (entry->d_tag) {
+      case DT_SYMTAB:  //.dynsym
+        self->dynsym = (ElfW(Sym) *)(self->load_bias + entry->d_un.d_ptr);
+        break;
+      case DT_STRTAB:  //.dynstr
+        self->dynstr = (const char *)(self->load_bias + entry->d_un.d_ptr);
+        break;
+      case DT_HASH:  //.hash
+        self->sysv_hash.buckets_cnt = ((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[0];
+        self->sysv_hash.chains_cnt = ((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[1];
+        self->sysv_hash.buckets = &(((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[2]);
+        self->sysv_hash.chains = &(self->sysv_hash.buckets[self->sysv_hash.buckets_cnt]);
+        break;
+      case DT_GNU_HASH:  //.gnu.hash
+        self->gnu_hash.buckets_cnt = ((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[0];
+        self->gnu_hash.symoffset = ((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[1];
+        self->gnu_hash.bloom_cnt = ((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[2];
+        self->gnu_hash.bloom_shift = ((const uint32_t *)(self->load_bias + entry->d_un.d_ptr))[3];
+        self->gnu_hash.bloom = (const ElfW(Addr) *)(self->load_bias + entry->d_un.d_ptr + 16);
+        self->gnu_hash.buckets = (const uint32_t *)(&(self->gnu_hash.bloom[self->gnu_hash.bloom_cnt]));
+        self->gnu_hash.chains = (const uint32_t *)(&(self->gnu_hash.buckets[self->gnu_hash.buckets_cnt]));
+        break;
+      default:
+        break;
+    }
+  }
+
+  if (NULL == self->dynsym || NULL == self->dynstr ||
+      (0 == self->sysv_hash.buckets_cnt && 0 == self->gnu_hash.buckets_cnt)) {
+    self->dynsym = NULL;
+    self->dynstr = NULL;
+    self->sysv_hash.buckets_cnt = 0;
+    self->gnu_hash.buckets_cnt = 0;
+    return -1;
+  }
+
+  return 0;
+}
+
+static void *xdl_read_file_to_heap(int file_fd, size_t file_sz, size_t data_offset, size_t data_len) {
+  if (0 == data_len) return NULL;
+  if (data_offset >= file_sz) return NULL;
+  if (data_offset + data_len > file_sz) return NULL;
+
+  if (data_offset != (size_t)lseek(file_fd, (off_t)data_offset, SEEK_SET)) return NULL;
+
+  void *data = malloc(data_len);
+  if (NULL == data) return NULL;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu-statement-expression"
+  if ((ssize_t)data_len != XDL_UTIL_TEMP_FAILURE_RETRY(read(file_fd, data, data_len)))
+#pragma clang diagnostic pop
+  {
+    free(data);
+    return NULL;
+  }
+
+  return data;
+}
+
+static void *xdl_read_file_to_heap_by_section(int file_fd, size_t file_sz, ElfW(Shdr) *shdr) {
+  return xdl_read_file_to_heap(file_fd, file_sz, (size_t)shdr->sh_offset, shdr->sh_size);
+}
+
+static void *xdl_read_memory_to_heap(void *mem, size_t mem_sz, size_t data_offset, size_t data_len) {
+  if (0 == data_len) return NULL;
+  if (data_offset >= mem_sz) return NULL;
+  if (data_offset + data_len > mem_sz) return NULL;
+
+  void *data = malloc(data_len);
+  if (NULL == data) return NULL;
+
+  memcpy(data, (void *)((uintptr_t)mem + data_offset), data_len);
+  return data;
+}
+
+static void *xdl_read_memory_to_heap_by_section(void *mem, size_t mem_sz, ElfW(Shdr) *shdr) {
+  return xdl_read_memory_to_heap(mem, mem_sz, (size_t)shdr->sh_offset, shdr->sh_size);
+}
+
+static void *xdl_get_memory(void *mem, size_t mem_sz, size_t data_offset, size_t data_len) {
+  if (0 == data_len) return NULL;
+  if (data_offset >= mem_sz) return NULL;
+  if (data_offset + data_len > mem_sz) return NULL;
+
+  return (void *)((uintptr_t)mem + data_offset);
+}
+
+static void *xdl_get_memory_by_section(void *mem, size_t mem_sz, ElfW(Shdr) *shdr) {
+  return xdl_get_memory(mem, mem_sz, (size_t)shdr->sh_offset, shdr->sh_size);
+}
+
+// load from disk and memory
+static int xdl_symtab_load_from_debugdata(xdl_t *self, int file_fd, size_t file_sz,
+                                          ElfW(Shdr) *shdr_debugdata) {
+  void *debugdata = NULL;
+  ElfW(Shdr) *shdrs = NULL;
+  int r = -1;
+
+  // get zipped .gnu_debugdata
+  uint8_t *debugdata_zip = (uint8_t *)xdl_read_file_to_heap_by_section(file_fd, file_sz, shdr_debugdata);
+  if (NULL == debugdata_zip) return -1;
+
+  // get unzipped .gnu_debugdata
+  size_t debugdata_sz;
+  if (0 != xdl_lzma_decompress(debugdata_zip, shdr_debugdata->sh_size, (uint8_t **)&debugdata, &debugdata_sz))
+    goto end;
+
+  // get ELF header
+  ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)debugdata;
+  if (0 == ehdr->e_shnum || ehdr->e_shentsize != sizeof(ElfW(Shdr))) goto end;
+
+  // get section headers
+  shdrs = (ElfW(Shdr) *)xdl_read_memory_to_heap(debugdata, debugdata_sz, (size_t)ehdr->e_shoff,
+                                                ehdr->e_shentsize * ehdr->e_shnum);
+  if (NULL == shdrs) goto end;
+
+  // get .shstrtab
+  if (SHN_UNDEF == ehdr->e_shstrndx || ehdr->e_shstrndx >= ehdr->e_shnum) goto end;
+  char *shstrtab = (char *)xdl_get_memory_by_section(debugdata, debugdata_sz, shdrs + ehdr->e_shstrndx);
+  if (NULL == shstrtab) goto end;
+
+  // find .symtab & .strtab
+  for (ElfW(Shdr) *shdr = shdrs; shdr < shdrs + ehdr->e_shnum; shdr++) {
+    char *shdr_name = shstrtab + shdr->sh_name;
+
+    if (SHT_SYMTAB == shdr->sh_type && 0 == strcmp(".symtab", shdr_name)) {
+      // get & check associated .strtab section
+      if (shdr->sh_link >= ehdr->e_shnum) continue;
+      ElfW(Shdr) *shdr_strtab = shdrs + shdr->sh_link;
+      if (SHT_STRTAB != shdr_strtab->sh_type) continue;
+
+      // get .symtab & .strtab
+      ElfW(Sym) *symtab = (ElfW(Sym) *)xdl_read_memory_to_heap_by_section(debugdata, debugdata_sz, shdr);
+      if (NULL == symtab) continue;
+      char *strtab = (char *)xdl_read_memory_to_heap_by_section(debugdata, debugdata_sz, shdr_strtab);
+      if (NULL == strtab) {
+        free(symtab);
+        continue;
+      }
+
+      // OK
+      self->symtab = symtab;
+      self->symtab_cnt = shdr->sh_size / shdr->sh_entsize;
+      self->strtab = strtab;
+      self->strtab_sz = shdr_strtab->sh_size;
+      r = 0;
+      break;
+    }
+  }
+
+end:
+  free(debugdata_zip);
+  if (NULL != debugdata) free(debugdata);
+  if (NULL != shdrs) free(shdrs);
+  return r;
+}
+
+// load from disk and memory
+static int xdl_symtab_load(xdl_t *self) {
+  if ('[' == self->pathname[0]) return -1;
+
+  int r = -1;
+  ElfW(Shdr) *shdrs = NULL;
+  char *shstrtab = NULL;
+
+  // get base address
+  uintptr_t vaddr_min = UINTPTR_MAX;
+  for (size_t i = 0; i < self->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(self->dlpi_phdr[i]);
+    if (PT_LOAD == phdr->p_type) {
+      if (vaddr_min > phdr->p_vaddr) vaddr_min = phdr->p_vaddr;
+    }
+  }
+  if (UINTPTR_MAX == vaddr_min) return -1;
+  self->base = self->load_bias + vaddr_min;
+
+  // open file
+  int flags = O_RDONLY | O_CLOEXEC;
+  int file_fd;
+  if ('/' == self->pathname[0]) {
+    file_fd = open(self->pathname, flags);
+  } else {
+    char full_pathname[1024];
+    // try the fast method
+    snprintf(full_pathname, sizeof(full_pathname), "%s/%s", XDL_LIB_PATH, self->pathname);
+    file_fd = open(full_pathname, flags);
+    if (file_fd < 0) {
+      // try the slow method
+      if (0 != xdl_iterate_get_full_pathname(self->base, full_pathname, sizeof(full_pathname))) return -1;
+      file_fd = open(full_pathname, flags);
+    }
+  }
+  if (file_fd < 0) return -1;
+  struct stat st;
+  if (0 != fstat(file_fd, &st)) goto end;
+  size_t file_sz = (size_t)st.st_size;
+
+  // get ELF header
+  ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)self->base;
+  if (0 == ehdr->e_shnum || ehdr->e_shentsize != sizeof(ElfW(Shdr))) goto end;
+
+  // get section headers
+  shdrs = (ElfW(Shdr) *)xdl_read_file_to_heap(file_fd, file_sz, (size_t)ehdr->e_shoff,
+                                              ehdr->e_shentsize * ehdr->e_shnum);
+  if (NULL == shdrs) goto end;
+
+  // get .shstrtab
+  if (SHN_UNDEF == ehdr->e_shstrndx || ehdr->e_shstrndx >= ehdr->e_shnum) goto end;
+  shstrtab = (char *)xdl_read_file_to_heap_by_section(file_fd, file_sz, shdrs + ehdr->e_shstrndx);
+  if (NULL == shstrtab) goto end;
+
+  // find .symtab & .strtab
+  for (ElfW(Shdr) *shdr = shdrs; shdr < shdrs + ehdr->e_shnum; shdr++) {
+    char *shdr_name = shstrtab + shdr->sh_name;
+
+    if (SHT_SYMTAB == shdr->sh_type && 0 == strcmp(".symtab", shdr_name)) {
+      // get & check associated .strtab section
+      if (shdr->sh_link >= ehdr->e_shnum) continue;
+      ElfW(Shdr) *shdr_strtab = shdrs + shdr->sh_link;
+      if (SHT_STRTAB != shdr_strtab->sh_type) continue;
+
+      // get .symtab & .strtab
+      ElfW(Sym) *symtab = (ElfW(Sym) *)xdl_read_file_to_heap_by_section(file_fd, file_sz, shdr);
+      if (NULL == symtab) continue;
+      char *strtab = (char *)xdl_read_file_to_heap_by_section(file_fd, file_sz, shdr_strtab);
+      if (NULL == strtab) {
+        free(symtab);
+        continue;
+      }
+
+      // OK
+      self->symtab = symtab;
+      self->symtab_cnt = shdr->sh_size / shdr->sh_entsize;
+      self->strtab = strtab;
+      self->strtab_sz = shdr_strtab->sh_size;
+      r = 0;
+      break;
+    } else if (SHT_PROGBITS == shdr->sh_type && 0 == strcmp(".gnu_debugdata", shdr_name)) {
+      if (0 == xdl_symtab_load_from_debugdata(self, file_fd, file_sz, shdr)) {
+        // OK
+        r = 0;
+        break;
+      }
+    }
+  }
+
+end:
+  close(file_fd);
+  if (NULL != shdrs) free(shdrs);
+  if (NULL != shstrtab) free(shstrtab);
+  return r;
+}
+
+static xdl_t *xdl_find_from_auxv(unsigned long type, const char *pathname) {
+  if (NULL == getauxval) return NULL;  // API level < 18
+
+  uintptr_t val = (uintptr_t)getauxval(type);
+  if (0 == val) return NULL;
+
+  // get base
+  uintptr_t base = (AT_PHDR == type ? (val & (~0xffful)) : val);
+  if (0 != memcmp((void *)base, ELFMAG, SELFMAG)) return NULL;
+
+  // ELF info
+  ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)base;
+  const ElfW(Phdr) *dlpi_phdr = (const ElfW(Phdr) *)(base + ehdr->e_phoff);
+  ElfW(Half) dlpi_phnum = ehdr->e_phnum;
+
+  // get bias
+  uintptr_t min_vaddr = UINTPTR_MAX;
+  for (size_t i = 0; i < dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(dlpi_phdr[i]);
+    if (PT_LOAD == phdr->p_type) {
+      if (min_vaddr > phdr->p_vaddr) min_vaddr = phdr->p_vaddr;
+    }
+  }
+  if (UINTPTR_MAX == min_vaddr || base < min_vaddr) return NULL;
+  uintptr_t load_bias = base - min_vaddr;
+
+  // create xDL object
+  xdl_t *self;
+  if (NULL == (self = calloc(1, sizeof(xdl_t)))) return NULL;
+  if (NULL == (self->pathname = strdup(pathname))) {
+    free(self);
+    return NULL;
+  }
+  self->load_bias = load_bias;
+  self->dlpi_phdr = dlpi_phdr;
+  self->dlpi_phnum = dlpi_phnum;
+  self->dynsym_try_load = false;
+  self->symtab_try_load = false;
+  return self;
+}
+
+static int xdl_find_iterate_cb(struct dl_phdr_info *info, size_t size, void *arg) {
+  (void)size;
+
+  uintptr_t *pkg = (uintptr_t *)arg;
+  xdl_t **self = (xdl_t **)*pkg++;
+  const char *filename = (const char *)*pkg;
+
+  // check load_bias
+  if (0 == info->dlpi_addr || NULL == info->dlpi_name) return 0;
+
+  // check pathname
+  if ('[' == filename[0]) {
+    if (0 != strcmp(info->dlpi_name, filename)) return 0;
+  } else if ('/' == filename[0]) {
+    if ('/' == info->dlpi_name[0]) {
+      if (0 != strcmp(info->dlpi_name, filename)) return 0;
+    } else {
+      if (!xdl_util_ends_with(filename, info->dlpi_name)) return 0;
+    }
+  } else {
+    if ('/' == info->dlpi_name[0]) {
+      if (!xdl_util_ends_with(info->dlpi_name, filename)) return 0;
+    } else {
+      if (0 != strcmp(info->dlpi_name, filename)) return 0;
+    }
+  }
+
+  // found the target ELF
+  if (NULL == ((*self) = calloc(1, sizeof(xdl_t)))) return 1;  // return failed
+  if (NULL == ((*self)->pathname = strdup((const char *)info->dlpi_name))) {
+    free(*self);
+    *self = NULL;
+    return 1;  // return failed
+  }
+  (*self)->load_bias = info->dlpi_addr;
+  (*self)->dlpi_phdr = info->dlpi_phdr;
+  (*self)->dlpi_phnum = info->dlpi_phnum;
+  (*self)->dynsym_try_load = false;
+  (*self)->symtab_try_load = false;
+  return 1;  // return OK
+}
+
+static xdl_t *xdl_find(const char *filename) {
+  // from auxv (linker, vDSO)
+  xdl_t *self = NULL;
+  if (xdl_util_ends_with(filename, XDL_UTIL_LINKER_BASENAME))
+    self = xdl_find_from_auxv(AT_BASE, XDL_UTIL_LINKER_PATHNAME);
+  else if (xdl_util_ends_with(filename, XDL_UTIL_VDSO_BASENAME))
+    self = xdl_find_from_auxv(AT_SYSINFO_EHDR, XDL_UTIL_VDSO_BASENAME);
+
+  // from auxv (app_process)
+  const char *basename, *pathname;
+#if (defined(__arm__) || defined(__i386__)) && __ANDROID_API__ < __ANDROID_API_L__
+  if (xdl_util_get_api_level() < __ANDROID_API_L__) {
+    basename = XDL_UTIL_APP_PROCESS_BASENAME_K;
+    pathname = XDL_UTIL_APP_PROCESS_PATHNAME_K;
+  } else
+#endif
+  {
+    basename = XDL_UTIL_APP_PROCESS_BASENAME;
+    pathname = XDL_UTIL_APP_PROCESS_PATHNAME;
+  }
+  if (xdl_util_ends_with(filename, basename)) self = xdl_find_from_auxv(AT_PHDR, pathname);
+
+  if (NULL != self) return self;
+
+  // from dl_iterate_phdr
+  uintptr_t pkg[2] = {(uintptr_t)&self, (uintptr_t)filename};
+  xdl_iterate_phdr(xdl_find_iterate_cb, pkg, XDL_DEFAULT);
+  return self;
+}
+
+static void *xdl_open_always_force(const char *filename) {
+  // always force dlopen()
+  void *linker_handle = xdl_linker_force_dlopen(filename);
+  if (NULL == linker_handle) return NULL;
+
+  // find
+  xdl_t *self = xdl_find(filename);
+  if (NULL == self)
+    dlclose(linker_handle);
+  else
+    self->linker_handle = linker_handle;
+
+  return (void *)self;
+}
+
+static void *xdl_open_try_force(const char *filename) {
+  // find
+  xdl_t *self = xdl_find(filename);
+  if (NULL != self) return (void *)self;
+
+  // try force dlopen()
+  void *linker_handle = xdl_linker_force_dlopen(filename);
+  if (NULL == linker_handle) return NULL;
+
+  // find again
+  self = xdl_find(filename);
+  if (NULL == self)
+    dlclose(linker_handle);
+  else
+    self->linker_handle = linker_handle;
+
+  return (void *)self;
+}
+
+void *xdl_open(const char *filename, int flags) {
+  if (NULL == filename) return NULL;
+
+  if (flags & XDL_ALWAYS_FORCE_LOAD)
+    return xdl_open_always_force(filename);
+  else if (flags & XDL_TRY_FORCE_LOAD)
+    return xdl_open_try_force(filename);
+  else
+    return xdl_find(filename);
+}
+
+void *xdl_close(void *handle) {
+  if (NULL == handle) return NULL;
+
+  xdl_t *self = (xdl_t *)handle;
+  if (NULL != self->pathname) free(self->pathname);
+  if (NULL != self->symtab) free(self->symtab);
+  if (NULL != self->strtab) free(self->strtab);
+
+  void *linker_handle = self->linker_handle;
+  free(self);
+  return linker_handle;
+}
+
+static uint32_t xdl_sysv_hash(const uint8_t *name) {
+  uint32_t h = 0, g;
+
+  while (*name) {
+    h = (h << 4) + *name++;
+    g = h & 0xf0000000;
+    h ^= g;
+    h ^= g >> 24;
+  }
+  return h;
+}
+
+static uint32_t xdl_gnu_hash(const uint8_t *name) {
+  uint32_t h = 5381;
+
+  while (*name) {
+    h += (h << 5) + *name++;
+  }
+  return h;
+}
+
+static ElfW(Sym) *xdl_dynsym_find_symbol_use_sysv_hash(xdl_t *self, const char *sym_name) {
+  uint32_t hash = xdl_sysv_hash((const uint8_t *)sym_name);
+
+  for (uint32_t i = self->sysv_hash.buckets[hash % self->sysv_hash.buckets_cnt]; 0 != i;
+       i = self->sysv_hash.chains[i]) {
+    ElfW(Sym) *sym = self->dynsym + i;
+    if (0 != strcmp(self->dynstr + sym->st_name, sym_name)) continue;
+    return sym;
+  }
+
+  return NULL;
+}
+
+static ElfW(Sym) *xdl_dynsym_find_symbol_use_gnu_hash(xdl_t *self, const char *sym_name) {
+  uint32_t hash = xdl_gnu_hash((const uint8_t *)sym_name);
+
+  static uint32_t elfclass_bits = sizeof(ElfW(Addr)) * 8;
+  size_t word = self->gnu_hash.bloom[(hash / elfclass_bits) % self->gnu_hash.bloom_cnt];
+  size_t mask = 0 | (size_t)1 << (hash % elfclass_bits) |
+                (size_t)1 << ((hash >> self->gnu_hash.bloom_shift) % elfclass_bits);
+
+  // if at least one bit is not set, this symbol is surely missing
+  if ((word & mask) != mask) return NULL;
+
+  // ignore STN_UNDEF
+  uint32_t i = self->gnu_hash.buckets[hash % self->gnu_hash.buckets_cnt];
+  if (i < self->gnu_hash.symoffset) return NULL;
+
+  // loop through the chain
+  while (1) {
+    ElfW(Sym) *sym = self->dynsym + i;
+    uint32_t sym_hash = self->gnu_hash.chains[i - self->gnu_hash.symoffset];
+
+    if ((hash | (uint32_t)1) == (sym_hash | (uint32_t)1)) {
+      if (0 == strcmp(self->dynstr + sym->st_name, sym_name)) {
+        return sym;
+      }
+    }
+
+    // chain ends with an element with the lowest bit set to 1
+    if (sym_hash & (uint32_t)1) break;
+
+    i++;
+  }
+
+  return NULL;
+}
+
+void *xdl_sym(void *handle, const char *symbol, size_t *symbol_size) {
+  if (NULL == handle || NULL == symbol) return NULL;
+  if (NULL != symbol_size) *symbol_size = 0;
+
+  xdl_t *self = (xdl_t *)handle;
+
+  // load .dynsym only once
+  if (!self->dynsym_try_load) {
+    self->dynsym_try_load = true;
+    if (0 != xdl_dynsym_load(self)) return NULL;
+  }
+
+  // find symbol
+  if (NULL == self->dynsym) return NULL;
+  ElfW(Sym) *sym = NULL;
+  if (self->gnu_hash.buckets_cnt > 0) {
+    // use GNU hash (.gnu.hash -> .dynsym -> .dynstr), O(x) + O(1) + O(1)
+    sym = xdl_dynsym_find_symbol_use_gnu_hash(self, symbol);
+  }
+  if (NULL == sym && self->sysv_hash.buckets_cnt > 0) {
+    // use SYSV hash (.hash -> .dynsym -> .dynstr), O(x) + O(1) + O(1)
+    sym = xdl_dynsym_find_symbol_use_sysv_hash(self, symbol);
+  }
+  if (NULL == sym || !XDL_DYNSYM_IS_EXPORT_SYM(sym->st_shndx)) return NULL;
+
+  if (NULL != symbol_size) *symbol_size = sym->st_size;
+  return (void *)(self->load_bias + sym->st_value);
+}
+
+// clang-format off
+/*
+ * For internal symbols in .symtab, LLVM may add some suffixes (for example for thinLTO).
+ * The format of the suffix is: ".xxxx.[hash]". LLVM may add multiple suffixes at once.
+ * The symbol name after removing these all suffixes is called canonical name.
+ *
+ * Because the hash part in the suffix may change when recompiled, so here we only match
+ * the canonical name.
+ *
+ * IN ADDITION: According to C/C++ syntax, it is illegal for a function name to contain
+ * dot character('.'), either in the middle or at the end.
+ *
+ * samples:
+ *
+ * symbol name in .symtab          lookup                       is match
+ * ----------------------          ----------------             --------
+ * abcd                            abc                          N
+ * abcd                            abcde                        N
+ * abcd                            abcd                         Y
+ * abcd.llvm.10190306339727611508  abc                          N
+ * abcd.llvm.10190306339727611508  abcd                         Y
+ * abcd.llvm.10190306339727611508  abcd.                        N
+ * abcd.llvm.10190306339727611508  abcd.llvm                    Y
+ * abcd.llvm.10190306339727611508  abcd.llvm.                   N
+ * abcd.__uniq.513291356003753     abcd.__uniq.51329            N
+ * abcd.__uniq.513291356003753     abcd.__uniq.513291356003753  Y
+ */
+// clang-format on
+static inline bool xdl_dsym_is_match(const char *str, const char *sym, size_t sym_len) {
+  size_t str_len = strlen(str);
+  if (0 == str_len) return false;
+
+  if (str_len < sym_len) {
+    return false;
+  } else {
+    bool sym_len_match = (0 == memcmp(str, sym, sym_len));
+    if (str_len == sym_len)
+      return sym_len_match;
+    else // str_len > sym_len
+      return sym_len_match && (str[sym_len] == '.');
+  }
+}
+
+void *xdl_dsym(void *handle, const char *symbol, size_t *symbol_size) {
+  if (NULL == handle || NULL == symbol) return NULL;
+  if (NULL != symbol_size) *symbol_size = 0;
+
+  xdl_t *self = (xdl_t *)handle;
+
+  // load .symtab only once
+  if (!self->symtab_try_load) {
+    self->symtab_try_load = true;
+    if (0 != xdl_symtab_load(self)) return NULL;
+  }
+
+  // find symbol
+  if (NULL == self->symtab) return NULL;
+  size_t symbol_len = strlen(symbol);
+  for (size_t i = 0; i < self->symtab_cnt; i++) {
+    ElfW(Sym) *sym = self->symtab + i;
+
+    if (!XDL_SYMTAB_IS_EXPORT_SYM(sym->st_shndx)) continue;
+    // if (0 != strncmp(self->strtab + sym->st_name, symbol, self->strtab_sz - sym->st_name)) continue;
+    if (!xdl_dsym_is_match(self->strtab + sym->st_name, symbol, symbol_len)) continue;
+
+    if (NULL != symbol_size) *symbol_size = sym->st_size;
+    return (void *)(self->load_bias + sym->st_value);
+  }
+
+  return NULL;
+}
+
+static bool xdl_elf_is_match(uintptr_t load_bias, const ElfW(Phdr) *dlpi_phdr, ElfW(Half) dlpi_phnum,
+                             uintptr_t addr) {
+  if (addr < load_bias) return false;
+
+  uintptr_t vaddr = addr - load_bias;
+  for (size_t i = 0; i < dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(dlpi_phdr[i]);
+    if (PT_LOAD != phdr->p_type) continue;
+
+    if (phdr->p_vaddr <= vaddr && vaddr < phdr->p_vaddr + phdr->p_memsz) return true;
+  }
+
+  return false;
+}
+
+static int xdl_open_by_addr_iterate_cb(struct dl_phdr_info *info, size_t size, void *arg) {
+  (void)size;
+
+  uintptr_t *pkg = (uintptr_t *)arg;
+  xdl_t **self = (xdl_t **)*pkg++;
+  uintptr_t addr = *pkg;
+
+  if (0 == info->dlpi_addr || NULL == info->dlpi_name) return 0; // continue
+
+  if (xdl_elf_is_match(info->dlpi_addr, info->dlpi_phdr, info->dlpi_phnum, addr)) {
+    // found the target ELF
+    if (NULL == ((*self) = calloc(1, sizeof(xdl_t)))) return 1;  // failed
+    if (NULL == ((*self)->pathname = strdup((const char *)info->dlpi_name))) {
+      free(*self);
+      *self = NULL;
+      return 1;  // failed
+    }
+    (*self)->load_bias = info->dlpi_addr;
+    (*self)->dlpi_phdr = info->dlpi_phdr;
+    (*self)->dlpi_phnum = info->dlpi_phnum;
+    (*self)->dynsym_try_load = false;
+    (*self)->symtab_try_load = false;
+    return 1;  // OK
+  }
+
+  return 0;  // continue
+}
+
+static void *xdl_open_by_addr(void *addr) {
+  if (NULL == addr) return NULL;
+
+  xdl_t *self = NULL;
+  uintptr_t pkg[2] = {(uintptr_t)&self, (uintptr_t)addr};
+  xdl_iterate_phdr(xdl_open_by_addr_iterate_cb, pkg, XDL_DEFAULT);
+
+  return (void *)self;
+}
+
+static bool xdl_sym_is_match(ElfW(Sym) *sym, uintptr_t offset, bool is_symtab) {
+  if (is_symtab) {
+    if (!XDL_SYMTAB_IS_EXPORT_SYM(sym->st_shndx)) false;
+  } else {
+    if (!XDL_DYNSYM_IS_EXPORT_SYM(sym->st_shndx)) false;
+  }
+
+  return ELF_ST_TYPE(sym->st_info) != STT_TLS && offset >= sym->st_value &&
+         offset < sym->st_value + sym->st_size;
+}
+
+static ElfW(Sym) *xdl_sym_by_addr(void *handle, void *addr) {
+  xdl_t *self = (xdl_t *)handle;
+
+  // load .dynsym only once
+  if (!self->dynsym_try_load) {
+    self->dynsym_try_load = true;
+    if (0 != xdl_dynsym_load(self)) return NULL;
+  }
+
+  // find symbol
+  if (NULL == self->dynsym) return NULL;
+  uintptr_t offset = (uintptr_t)addr - self->load_bias;
+  if (self->gnu_hash.buckets_cnt > 0) {
+    const uint32_t *chains_all = self->gnu_hash.chains - self->gnu_hash.symoffset;
+    for (size_t i = 0; i < self->gnu_hash.buckets_cnt; i++) {
+      uint32_t n = self->gnu_hash.buckets[i];
+      if (n < self->gnu_hash.symoffset) continue;
+      do {
+        ElfW(Sym) *sym = self->dynsym + n;
+        if (xdl_sym_is_match(sym, offset, false)) return sym;
+      } while ((chains_all[n++] & 1) == 0);
+    }
+  } else if (self->sysv_hash.chains_cnt > 0) {
+    for (size_t i = 0; i < self->sysv_hash.chains_cnt; i++) {
+      ElfW(Sym) *sym = self->dynsym + i;
+      if (xdl_sym_is_match(sym, offset, false)) return sym;
+    }
+  }
+
+  return NULL;
+}
+
+static ElfW(Sym) *xdl_dsym_by_addr(void *handle, void *addr) {
+  xdl_t *self = (xdl_t *)handle;
+
+  // load .symtab only once
+  if (!self->symtab_try_load) {
+    self->symtab_try_load = true;
+    if (0 != xdl_symtab_load(self)) return NULL;
+  }
+
+  // find symbol
+  if (NULL == self->symtab) return NULL;
+  uintptr_t offset = (uintptr_t)addr - self->load_bias;
+  for (size_t i = 0; i < self->symtab_cnt; i++) {
+    ElfW(Sym) *sym = self->symtab + i;
+    if (xdl_sym_is_match(sym, offset, true)) return sym;
+  }
+
+  return NULL;
+}
+
+int xdl_addr(void *addr, xdl_info_t *info, void **cache) {
+  if (NULL == addr || NULL == info || NULL == cache) return 0;
+
+  memset(info, 0, sizeof(Dl_info));
+
+  // find handle from cache
+  xdl_t *handle = NULL;
+  for (handle = *((xdl_t **)cache); NULL != handle; handle = handle->next)
+    if (xdl_elf_is_match(handle->load_bias, handle->dlpi_phdr, handle->dlpi_phnum, (uintptr_t)addr)) break;
+
+  // create new handle, save handle to cache
+  if (NULL == handle) {
+    handle = (xdl_t *)xdl_open_by_addr(addr);
+    if (NULL == handle) return 0;
+    handle->next = *(xdl_t **)cache;
+    *(xdl_t **)cache = handle;
+  }
+
+  // we have at least: load_bias, pathname, dlpi_phdr, dlpi_phnum
+  info->dli_fbase = (void *)handle->load_bias;
+  info->dli_fname = handle->pathname;
+  info->dli_sname = NULL;
+  info->dli_saddr = 0;
+  info->dli_ssize = 0;
+  info->dlpi_phdr = handle->dlpi_phdr;
+  info->dlpi_phnum = (size_t)handle->dlpi_phnum;
+
+  // keep looking for: symbol name, symbol offset, symbol size
+  ElfW(Sym) *sym;
+  if (NULL != (sym = xdl_sym_by_addr((void *)handle, addr))) {
+    info->dli_sname = handle->dynstr + sym->st_name;
+    info->dli_saddr = (void *)(handle->load_bias + sym->st_value);
+    info->dli_ssize = sym->st_size;
+  } else if (NULL != (sym = xdl_dsym_by_addr((void *)handle, addr))) {
+    info->dli_sname = handle->strtab + sym->st_name;
+    info->dli_saddr = (void *)(handle->load_bias + sym->st_value);
+    info->dli_ssize = sym->st_size;
+  }
+
+  return 1;
+}
+
+void xdl_addr_clean(void **cache) {
+  if (NULL == cache) return;
+
+  xdl_t *handle = *((xdl_t **)cache);
+  while (NULL != handle) {
+    xdl_t *tmp = handle;
+    handle = handle->next;
+    xdl_close(tmp);
+  }
+  *cache = NULL;
+}
+
+int xdl_iterate_phdr(int (*callback)(struct dl_phdr_info *, size_t, void *), void *data, int flags) {
+  if (NULL == callback) return 0;
+
+  return xdl_iterate_phdr_impl(callback, data, flags);
+}
+
+int xdl_info(void *handle, int request, void *info) {
+  if (NULL == handle || XDL_DI_DLINFO != request || NULL == info) return -1;
+
+  xdl_t *self = (xdl_t *)handle;
+  xdl_info_t *dlinfo = (xdl_info_t *)info;
+
+  dlinfo->dli_fbase = (void *)self->load_bias;
+  dlinfo->dli_fname = self->pathname;
+  dlinfo->dli_sname = NULL;
+  dlinfo->dli_saddr = 0;
+  dlinfo->dli_ssize = 0;
+  dlinfo->dlpi_phdr = self->dlpi_phdr;
+  dlinfo->dlpi_phnum = (size_t)self->dlpi_phnum;
+  return 0;
+}
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl.h b/app/src/main/cpp/shadowhook/third_party/xdl/xdl.h
new file mode 100644
index 0000000..ef588d5
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl.h
@@ -0,0 +1,92 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-10-04.
+
+//
+// xDL version: 2.1.1
+//
+// xDL is an enhanced implementation of the Android DL series functions.
+// For more information, documentation, and the latest version please check:
+// https://github.com/hexhacking/xDL
+//
+
+#ifndef IO_GITHUB_HEXHACKING_XDL
+#define IO_GITHUB_HEXHACKING_XDL
+
+#include <dlfcn.h>
+#include <link.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+  // same as Dl_info:
+  const char *dli_fname;  // Pathname of shared object that contains address.
+  void *dli_fbase;        // Address at which shared object is loaded.
+  const char *dli_sname;  // Name of nearest symbol with address lower than addr.
+  void *dli_saddr;        // Exact address of symbol named in dli_sname.
+  // added by xDL:
+  size_t dli_ssize;             // Symbol size of nearest symbol with address lower than addr.
+  const ElfW(Phdr) *dlpi_phdr;  // Pointer to array of ELF program headers for this object.
+  size_t dlpi_phnum;            // Number of items in dlpi_phdr.
+} xdl_info_t;
+
+//
+// Default value for flags in both xdl_open() and xdl_iterate_phdr().
+//
+#define XDL_DEFAULT 0x00
+
+//
+// Enhanced dlopen() / dlclose() / dlsym().
+//
+#define XDL_TRY_FORCE_LOAD    0x01
+#define XDL_ALWAYS_FORCE_LOAD 0x02
+void *xdl_open(const char *filename, int flags);
+void *xdl_close(void *handle);
+void *xdl_sym(void *handle, const char *symbol, size_t *symbol_size);
+void *xdl_dsym(void *handle, const char *symbol, size_t *symbol_size);
+
+//
+// Enhanced dladdr().
+//
+int xdl_addr(void *addr, xdl_info_t *info, void **cache);
+void xdl_addr_clean(void **cache);
+
+//
+// Enhanced dl_iterate_phdr().
+//
+#define XDL_FULL_PATHNAME 0x01
+int xdl_iterate_phdr(int (*callback)(struct dl_phdr_info *, size_t, void *), void *data, int flags);
+
+//
+// Custom dlinfo().
+//
+#define XDL_DI_DLINFO 1  // type of info: xdl_info_t
+int xdl_info(void *handle, int request, void *info);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.c b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.c
new file mode 100644
index 0000000..b89b642
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.c
@@ -0,0 +1,297 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-10-04.
+
+#include "xdl_iterate.h"
+
+#include <android/api-level.h>
+#include <ctype.h>
+#include <dlfcn.h>
+#include <elf.h>
+#include <inttypes.h>
+#include <link.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/auxv.h>
+
+#include "xdl.h"
+#include "xdl_linker.h"
+#include "xdl_util.h"
+
+/*
+ * =========================================================================================================
+ * API-LEVEL  ANDROID-VERSION  SOLUTION
+ * =========================================================================================================
+ * 16         4.1              /proc/self/maps
+ * 17         4.2              /proc/self/maps
+ * 18         4.3              /proc/self/maps
+ * 19         4.4              /proc/self/maps
+ * 20         4.4W             /proc/self/maps
+ * ---------------------------------------------------------------------------------------------------------
+ * 21         5.0              dl_iterate_phdr() + __dl__ZL10g_dl_mutex + linker/linker64 from getauxval(3)
+ * 22         5.1              dl_iterate_phdr() + __dl__ZL10g_dl_mutex + linker/linker64 from getauxval(3)
+ * ---------------------------------------------------------------------------------------------------------
+ * 23         >= 6.0           dl_iterate_phdr() + linker/linker64 from getauxval(3)
+ * =========================================================================================================
+ */
+
+extern __attribute((weak)) int dl_iterate_phdr(int (*)(struct dl_phdr_info *, size_t, void *), void *);
+extern __attribute((weak)) unsigned long int getauxval(unsigned long int);
+
+static uintptr_t xdl_iterate_get_min_vaddr(struct dl_phdr_info *info) {
+  uintptr_t min_vaddr = UINTPTR_MAX;
+  for (size_t i = 0; i < info->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(info->dlpi_phdr[i]);
+    if (PT_LOAD == phdr->p_type) {
+      if (min_vaddr > phdr->p_vaddr) min_vaddr = phdr->p_vaddr;
+    }
+  }
+  return min_vaddr;
+}
+
+static int xdl_iterate_open_or_rewind_maps(FILE **maps) {
+  if (NULL == *maps) {
+    *maps = fopen("/proc/self/maps", "r");
+    if (NULL == *maps) return -1;
+  } else
+    rewind(*maps);
+
+  return 0;
+}
+
+static int xdl_iterate_get_pathname_from_maps(uintptr_t base, char *buf, size_t buf_len, FILE **maps) {
+  // open or rewind maps-file
+  if (0 != xdl_iterate_open_or_rewind_maps(maps)) return -1;  // failed
+
+  char line[1024];
+  while (fgets(line, sizeof(line), *maps)) {
+    // check base address
+    uintptr_t start, end;
+    if (2 != sscanf(line, "%" SCNxPTR "-%" SCNxPTR " r", &start, &end)) continue;
+    if (base < start) break;  // failed
+    if (base >= end) continue;
+
+    // get pathname
+    char *pathname = strchr(line, '/');
+    if (NULL == pathname) break;  // failed
+    xdl_util_trim_ending(pathname);
+
+    // found it
+    strlcpy(buf, pathname, buf_len);
+    return 0;  // OK
+  }
+
+  return -1;  // failed
+}
+
+static int xdl_iterate_by_linker_cb(struct dl_phdr_info *info, size_t size, void *arg) {
+  uintptr_t *pkg = (uintptr_t *)arg;
+  xdl_iterate_phdr_cb_t cb = (xdl_iterate_phdr_cb_t)*pkg++;
+  void *cb_arg = (void *)*pkg++;
+  FILE **maps = (FILE **)*pkg++;
+  uintptr_t linker_load_bias = *pkg++;
+  int flags = (int)*pkg;
+
+  // ignore invalid ELF
+  if (0 == info->dlpi_addr || NULL == info->dlpi_name || '\0' == info->dlpi_name[0]) return 0;
+
+  // ignore linker if we have returned it already
+  if (linker_load_bias == info->dlpi_addr) return 0;
+
+  struct dl_phdr_info info_fixed;
+  info_fixed.dlpi_addr = info->dlpi_addr;
+  info_fixed.dlpi_name = info->dlpi_name;
+  info_fixed.dlpi_phdr = info->dlpi_phdr;
+  info_fixed.dlpi_phnum = info->dlpi_phnum;
+  info = &info_fixed;
+
+  // fix dlpi_phdr & dlpi_phnum (from memory)
+  if (NULL == info->dlpi_phdr || 0 == info->dlpi_phnum) {
+    ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)info->dlpi_addr;
+    info->dlpi_phdr = (ElfW(Phdr) *)(info->dlpi_addr + ehdr->e_phoff);
+    info->dlpi_phnum = ehdr->e_phnum;
+  }
+
+  // fix dlpi_name (from /proc/self/maps)
+  if ('/' != info->dlpi_name[0] && '[' != info->dlpi_name[0] && (0 != (flags & XDL_FULL_PATHNAME))) {
+    // get base address
+    uintptr_t min_vaddr = xdl_iterate_get_min_vaddr(info);
+    if (UINTPTR_MAX == min_vaddr) return 0;  // ignore this ELF
+    uintptr_t base = (uintptr_t)(info->dlpi_addr + min_vaddr);
+
+    char buf[1024];
+    if (0 != xdl_iterate_get_pathname_from_maps(base, buf, sizeof(buf), maps)) return 0;  // ignore this ELF
+
+    info->dlpi_name = (const char *)buf;
+  }
+
+  // callback
+  return cb(info, size, cb_arg);
+}
+
+static uintptr_t xdl_iterate_get_linker_base(void) {
+  if (NULL == getauxval) return 0;
+
+  uintptr_t base = (uintptr_t)getauxval(AT_BASE);
+  if (0 == base) return 0;
+  if (0 != memcmp((void *)base, ELFMAG, SELFMAG)) return 0;
+
+  return base;
+}
+
+static int xdl_iterate_do_callback(xdl_iterate_phdr_cb_t cb, void *cb_arg, uintptr_t base,
+                                   const char *pathname, uintptr_t *load_bias) {
+  ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)base;
+
+  struct dl_phdr_info info;
+  info.dlpi_name = pathname;
+  info.dlpi_phdr = (const ElfW(Phdr) *)(base + ehdr->e_phoff);
+  info.dlpi_phnum = ehdr->e_phnum;
+
+  // get load bias
+  uintptr_t min_vaddr = xdl_iterate_get_min_vaddr(&info);
+  if (UINTPTR_MAX == min_vaddr) return 0;  // ignore invalid ELF
+  info.dlpi_addr = (ElfW(Addr))(base - min_vaddr);
+  if (NULL != load_bias) *load_bias = info.dlpi_addr;
+
+  return cb(&info, sizeof(struct dl_phdr_info), cb_arg);
+}
+
+static int xdl_iterate_by_linker(xdl_iterate_phdr_cb_t cb, void *cb_arg, int flags) {
+  if (NULL == dl_iterate_phdr) return 0;
+
+  int api_level = xdl_util_get_api_level();
+  FILE *maps = NULL;
+  int r;
+
+  // dl_iterate_phdr(3) does NOT contain linker/linker64 when Android version < 8.1 (API level 27).
+  // Here we always try to get linker base address from auxv.
+  uintptr_t linker_load_bias = 0;
+  uintptr_t linker_base = xdl_iterate_get_linker_base();
+  if (0 != linker_base) {
+    if (0 !=
+        (r = xdl_iterate_do_callback(cb, cb_arg, linker_base, XDL_UTIL_LINKER_PATHNAME, &linker_load_bias)))
+      return r;
+  }
+
+  // for other ELF
+  uintptr_t pkg[5] = {(uintptr_t)cb, (uintptr_t)cb_arg, (uintptr_t)&maps, linker_load_bias, (uintptr_t)flags};
+  if (__ANDROID_API_L__ == api_level || __ANDROID_API_L_MR1__ == api_level) xdl_linker_lock();
+  r = dl_iterate_phdr(xdl_iterate_by_linker_cb, pkg);
+  if (__ANDROID_API_L__ == api_level || __ANDROID_API_L_MR1__ == api_level) xdl_linker_unlock();
+
+  if (NULL != maps) fclose(maps);
+  return r;
+}
+
+#if (defined(__arm__) || defined(__i386__)) && __ANDROID_API__ < __ANDROID_API_L__
+static int xdl_iterate_by_maps(xdl_iterate_phdr_cb_t cb, void *cb_arg) {
+  FILE *maps = fopen("/proc/self/maps", "r");
+  if (NULL == maps) return 0;
+
+  int r = 0;
+  char buf1[1024], buf2[1024];
+  char *line = buf1;
+  uintptr_t prev_base = 0;
+  bool try_next_line = false;
+
+  while (fgets(line, sizeof(buf1), maps)) {
+    // Try to find an ELF which loaded by linker.
+    uintptr_t base, offset;
+    char exec;
+    if (3 != sscanf(line, "%" SCNxPTR "-%*" SCNxPTR " r%*c%cp %" SCNxPTR " ", &base, &exec, &offset))
+      goto clean;
+
+    if ('-' == exec && 0 == offset) {
+      // r--p
+      prev_base = base;
+      line = (line == buf1 ? buf2 : buf1);
+      try_next_line = true;
+      continue;
+    } else if (exec == 'x') {
+      // r-xp
+      char *pathname = NULL;
+      if (try_next_line && 0 != offset) {
+        char *prev = (line == buf1 ? buf2 : buf1);
+        char *prev_pathname = strchr(prev, '/');
+        if (NULL == prev_pathname) goto clean;
+
+        pathname = strchr(line, '/');
+        if (NULL == pathname) goto clean;
+
+        xdl_util_trim_ending(prev_pathname);
+        xdl_util_trim_ending(pathname);
+        if (0 != strcmp(prev_pathname, pathname)) goto clean;
+
+        // we found the line with r-xp in the next line
+        base = prev_base;
+        offset = 0;
+      }
+
+      if (0 != offset) goto clean;
+
+      // get pathname
+      if (NULL == pathname) {
+        pathname = strchr(line, '/');
+        if (NULL == pathname) goto clean;
+        xdl_util_trim_ending(pathname);
+      }
+
+      if (0 != memcmp((void *)base, ELFMAG, SELFMAG)) goto clean;
+      ElfW(Ehdr) *ehdr = (ElfW(Ehdr) *)base;
+      struct dl_phdr_info info;
+      info.dlpi_name = pathname;
+      info.dlpi_phdr = (const ElfW(Phdr) *)(base + ehdr->e_phoff);
+      info.dlpi_phnum = ehdr->e_phnum;
+
+      // callback
+      if (0 != (r = xdl_iterate_do_callback(cb, cb_arg, base, pathname, NULL))) break;
+    }
+
+  clean:
+    try_next_line = false;
+  }
+
+  fclose(maps);
+  return r;
+}
+#endif
+
+int xdl_iterate_phdr_impl(xdl_iterate_phdr_cb_t cb, void *cb_arg, int flags) {
+  // iterate by /proc/self/maps in Android 4.x (Android 4.x only supports arm32 and x86)
+#if (defined(__arm__) || defined(__i386__)) && __ANDROID_API__ < __ANDROID_API_L__
+  if (xdl_util_get_api_level() < __ANDROID_API_L__) return xdl_iterate_by_maps(cb, cb_arg);
+#endif
+
+  // iterate by dl_iterate_phdr()
+  return xdl_iterate_by_linker(cb, cb_arg, flags);
+}
+
+int xdl_iterate_get_full_pathname(uintptr_t base, char *buf, size_t buf_len) {
+  FILE *maps = NULL;
+  int r = xdl_iterate_get_pathname_from_maps(base, buf, buf_len, &maps);
+  if (NULL != maps) fclose(maps);
+  return r;
+}
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.h b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.h
new file mode 100644
index 0000000..ab22866
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_iterate.h
@@ -0,0 +1,43 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-10-04.
+
+#ifndef IO_GITHUB_HEXHACKING_XDL_ITERATE
+#define IO_GITHUB_HEXHACKING_XDL_ITERATE
+
+#include <link.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int (*xdl_iterate_phdr_cb_t)(struct dl_phdr_info *info, size_t size, void *arg);
+int xdl_iterate_phdr_impl(xdl_iterate_phdr_cb_t cb, void *cb_arg, int flags);
+
+int xdl_iterate_get_full_pathname(uintptr_t base, char *buf, size_t buf_len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.c b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.c
new file mode 100644
index 0000000..9021867
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.c
@@ -0,0 +1,234 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2021-02-21.
+
+#include "xdl_linker.h"
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+#include "xdl.h"
+#include "xdl_iterate.h"
+#include "xdl_util.h"
+
+#define XDL_LINKER_SYM_MUTEX           "__dl__ZL10g_dl_mutex"
+#define XDL_LINKER_SYM_DLOPEN_EXT_N    "__dl__ZL10dlopen_extPKciPK17android_dlextinfoPv"
+#define XDL_LINKER_SYM_DO_DLOPEN_N     "__dl__Z9do_dlopenPKciPK17android_dlextinfoPv"
+#define XDL_LINKER_SYM_DLOPEN_O        "__dl__Z8__dlopenPKciPKv"
+#define XDL_LINKER_SYM_LOADER_DLOPEN_P "__loader_dlopen"
+
+#ifndef __LP64__
+#define LIB "lib"
+#else
+#define LIB "lib64"
+#endif
+
+typedef void *(*xdl_linker_dlopen_n_t)(const char *, int, const void *, void *);
+typedef void *(*xdl_linker_dlopen_o_t)(const char *, int, const void *);
+
+static pthread_mutex_t *xdl_linker_mutex = NULL;
+static void *xdl_linker_dlopen = NULL;
+
+typedef enum { MATCH_PREFIX, MATCH_SUFFIX } xdl_linker_match_type_t;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wpadded"
+typedef struct {
+  xdl_linker_match_type_t type;
+  const char *value;
+} xdl_linker_match_t;
+#pragma clang diagnostic pop
+
+typedef struct {
+  void *addr;
+  xdl_linker_match_t *matches;
+  size_t matches_cursor;
+} xdl_linker_caller_t;
+
+// https://source.android.com/docs/core/architecture/vndk/linker-namespace
+// The following rules are loose and incomplete, you can add more according to your needs.
+static xdl_linker_match_t xdl_linker_match_default[] = {{MATCH_SUFFIX, "/libc.so"}};
+static xdl_linker_match_t xdl_linker_match_art[] = {{MATCH_SUFFIX, "/libart.so"}};
+static xdl_linker_match_t xdl_linker_match_sphal[] = {{MATCH_PREFIX, "/vendor/" LIB "/egl/"},
+                                                      {MATCH_PREFIX, "/vendor/" LIB "/hw/"},
+                                                      {MATCH_PREFIX, "/vendor/" LIB "/"},
+                                                      {MATCH_PREFIX, "/odm/" LIB "/"}};
+static xdl_linker_match_t xdl_linker_match_vndk[] = {{MATCH_PREFIX, "/apex/com.android.vndk.v"},
+                                                     {MATCH_PREFIX, "/vendor/" LIB "/vndk-sp/"},
+                                                     {MATCH_PREFIX, "/odm/" LIB "/vndk-sp/"}};
+static xdl_linker_caller_t xdl_linker_callers[] = {
+    {NULL, xdl_linker_match_default, sizeof(xdl_linker_match_default) / sizeof(xdl_linker_match_t)},
+    {NULL, xdl_linker_match_art, sizeof(xdl_linker_match_art) / sizeof(xdl_linker_match_t)},
+    {NULL, xdl_linker_match_sphal, sizeof(xdl_linker_match_sphal) / sizeof(xdl_linker_match_t)},
+    {NULL, xdl_linker_match_vndk, sizeof(xdl_linker_match_vndk) / sizeof(xdl_linker_match_t)}};
+
+static void xdl_linker_init_symbols_impl(void) {
+  // find linker from: /proc/self/maps (API level < 18) or getauxval (API level >= 18)
+  void *handle = xdl_open(XDL_UTIL_LINKER_BASENAME, XDL_DEFAULT);
+  if (NULL == handle) return;
+
+  int api_level = xdl_util_get_api_level();
+  if (__ANDROID_API_L__ == api_level || __ANDROID_API_L_MR1__ == api_level) {
+    // == Android 5.x
+    xdl_linker_mutex = (pthread_mutex_t *)xdl_dsym(handle, XDL_LINKER_SYM_MUTEX, NULL);
+  } else if (__ANDROID_API_N__ == api_level || __ANDROID_API_N_MR1__ == api_level) {
+    // == Android 7.x
+    xdl_linker_dlopen = xdl_dsym(handle, XDL_LINKER_SYM_DLOPEN_EXT_N, NULL);
+    if (NULL == xdl_linker_dlopen) {
+      xdl_linker_dlopen = xdl_dsym(handle, XDL_LINKER_SYM_DO_DLOPEN_N, NULL);
+      xdl_linker_mutex = (pthread_mutex_t *)xdl_dsym(handle, XDL_LINKER_SYM_MUTEX, NULL);
+    }
+  } else if (__ANDROID_API_O__ == api_level || __ANDROID_API_O_MR1__ == api_level) {
+    // == Android 8.x
+    xdl_linker_dlopen = xdl_dsym(handle, XDL_LINKER_SYM_DLOPEN_O, NULL);
+  } else if (api_level >= __ANDROID_API_P__) {
+    // >= Android 9.0
+    xdl_linker_dlopen = xdl_sym(handle, XDL_LINKER_SYM_LOADER_DLOPEN_P, NULL);
+  }
+
+  xdl_close(handle);
+}
+
+static void xdl_linker_init_symbols(void) {
+  static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+  static bool inited = false;
+  if (!inited) {
+    pthread_mutex_lock(&lock);
+    if (!inited) {
+      xdl_linker_init_symbols_impl();
+      inited = true;
+    }
+    pthread_mutex_unlock(&lock);
+  }
+}
+
+void xdl_linker_lock(void) {
+  xdl_linker_init_symbols();
+
+  if (NULL != xdl_linker_mutex) pthread_mutex_lock(xdl_linker_mutex);
+}
+
+void xdl_linker_unlock(void) {
+  if (NULL != xdl_linker_mutex) pthread_mutex_unlock(xdl_linker_mutex);
+}
+
+static void *xdl_linker_get_caller_addr(struct dl_phdr_info *info) {
+  for (size_t i = 0; i < info->dlpi_phnum; i++) {
+    const ElfW(Phdr) *phdr = &(info->dlpi_phdr[i]);
+    if (PT_LOAD == phdr->p_type) {
+      return (void *)(info->dlpi_addr + phdr->p_vaddr);
+    }
+  }
+  return NULL;
+}
+
+static void xdl_linker_save_caller_addr(struct dl_phdr_info *info, xdl_linker_caller_t *caller,
+                                        size_t cursor) {
+  void *addr = xdl_linker_get_caller_addr(info);
+  if (NULL != addr) {
+    caller->addr = addr;
+    caller->matches_cursor = cursor;
+  }
+}
+
+static int xdl_linker_get_caller_addr_cb(struct dl_phdr_info *info, size_t size, void *arg) {
+  (void)size, (void)arg;
+  if (0 == info->dlpi_addr || NULL == info->dlpi_name) return 0;  // continue
+
+  int ret = 1;  // OK
+  for (size_t i = 0; i < sizeof(xdl_linker_callers) / sizeof(xdl_linker_callers[0]); i++) {
+    xdl_linker_caller_t *caller = &xdl_linker_callers[i];
+    for (size_t j = 0; j < caller->matches_cursor; j++) {
+      xdl_linker_match_t *match = &caller->matches[j];
+      switch (match->type) {
+        case MATCH_PREFIX:
+          if (xdl_util_starts_with(info->dlpi_name, match->value)) {
+            xdl_linker_save_caller_addr(info, caller, j);
+          }
+          break;
+        case MATCH_SUFFIX:
+          if (xdl_util_ends_with(info->dlpi_name, match->value)) {
+            xdl_linker_save_caller_addr(info, caller, j);
+          }
+          break;
+      }
+    }
+    if (NULL == caller->addr || 0 != caller->matches_cursor) ret = 0;  // continue
+  }
+  return ret;
+}
+
+static void xdl_linker_init_caller_addr_impl(void) {
+  xdl_iterate_phdr_impl(xdl_linker_get_caller_addr_cb, NULL, XDL_DEFAULT);
+}
+
+static void xdl_linker_init_caller_addr(void) {
+  static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+  static bool inited = false;
+  if (!inited) {
+    pthread_mutex_lock(&lock);
+    if (!inited) {
+      xdl_linker_init_caller_addr_impl();
+      inited = true;
+    }
+    pthread_mutex_unlock(&lock);
+  }
+}
+
+void *xdl_linker_force_dlopen(const char *filename) {
+  int api_level = xdl_util_get_api_level();
+
+  if (api_level <= __ANDROID_API_M__) {
+    // <= Android 6.0
+    return dlopen(filename, RTLD_NOW);
+  } else {
+    xdl_linker_init_symbols();
+    if (NULL == xdl_linker_dlopen) return NULL;
+    xdl_linker_init_caller_addr();
+
+    void *handle = NULL;
+    if (__ANDROID_API_N__ == api_level || __ANDROID_API_N_MR1__ == api_level) {
+      // == Android 7.x
+      xdl_linker_lock();
+      for (size_t i = 0; i < sizeof(xdl_linker_callers) / sizeof(xdl_linker_callers[0]); i++) {
+        xdl_linker_caller_t *caller = &xdl_linker_callers[i];
+        if (NULL != caller->addr) {
+          handle = ((xdl_linker_dlopen_n_t)xdl_linker_dlopen)(filename, RTLD_NOW, NULL, caller->addr);
+          if (NULL != handle) break;
+        }
+      }
+      xdl_linker_unlock();
+    } else {
+      // >= Android 8.0
+      for (size_t i = 0; i < sizeof(xdl_linker_callers) / sizeof(xdl_linker_callers[0]); i++) {
+        xdl_linker_caller_t *caller = &xdl_linker_callers[i];
+        if (NULL != caller->addr) {
+          handle = ((xdl_linker_dlopen_o_t)xdl_linker_dlopen)(filename, RTLD_NOW, caller->addr);
+          if (NULL != handle) break;
+        }
+      }
+    }
+    return handle;
+  }
+}
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.h b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.h
new file mode 100644
index 0000000..00cbf44
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_linker.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2021-02-21.
+
+#ifndef IO_GITHUB_HEXHACKING_XDL_LINKER
+#define IO_GITHUB_HEXHACKING_XDL_LINKER
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void xdl_linker_lock(void);
+void xdl_linker_unlock(void);
+
+void *xdl_linker_force_dlopen(const char *filename);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.c b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.c
new file mode 100644
index 0000000..298c58f
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.c
@@ -0,0 +1,187 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-11-08.
+
+#include "xdl_lzma.h"
+
+#include <ctype.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "xdl.h"
+#include "xdl_util.h"
+
+// LZMA library pathname & symbol names
+#ifndef __LP64__
+#define XDL_LZMA_PATHNAME "/system/lib/liblzma.so"
+#else
+#define XDL_LZMA_PATHNAME "/system/lib64/liblzma.so"
+#endif
+#define XDL_LZMA_SYM_CRCGEN     "CrcGenerateTable"
+#define XDL_LZMA_SYM_CRC64GEN   "Crc64GenerateTable"
+#define XDL_LZMA_SYM_CONSTRUCT  "XzUnpacker_Construct"
+#define XDL_LZMA_SYM_ISFINISHED "XzUnpacker_IsStreamWasFinished"
+#define XDL_LZMA_SYM_FREE       "XzUnpacker_Free"
+#define XDL_LZMA_SYM_CODE       "XzUnpacker_Code"
+
+// LZMA data type definition
+#define SZ_OK 0
+typedef struct ISzAlloc ISzAlloc;
+typedef const ISzAlloc *ISzAllocPtr;
+struct ISzAlloc {
+  void *(*Alloc)(ISzAllocPtr p, size_t size);
+  void (*Free)(ISzAllocPtr p, void *address); /* address can be 0 */
+};
+typedef enum {
+  CODER_STATUS_NOT_SPECIFIED,      /* use main error code instead */
+  CODER_STATUS_FINISHED_WITH_MARK, /* stream was finished with end mark. */
+  CODER_STATUS_NOT_FINISHED,       /* stream was not finished */
+  CODER_STATUS_NEEDS_MORE_INPUT    /* you must provide more input bytes */
+} ECoderStatus;
+typedef enum {
+  CODER_FINISH_ANY, /* finish at any point */
+  CODER_FINISH_END  /* block must be finished at the end */
+} ECoderFinishMode;
+
+// LZMA function type definition
+typedef void (*xdl_lzma_crcgen_t)(void);
+typedef void (*xdl_lzma_crc64gen_t)(void);
+typedef void (*xdl_lzma_construct_t)(void *, ISzAllocPtr);
+typedef int (*xdl_lzma_isfinished_t)(const void *);
+typedef void (*xdl_lzma_free_t)(void *);
+typedef int (*xdl_lzma_code_t)(void *, uint8_t *, size_t *, const uint8_t *, size_t *, ECoderFinishMode,
+                               ECoderStatus *);
+typedef int (*xdl_lzma_code_q_t)(void *, uint8_t *, size_t *, const uint8_t *, size_t *, int,
+                                 ECoderFinishMode, ECoderStatus *);
+
+// LZMA function pointor
+static xdl_lzma_construct_t xdl_lzma_construct = NULL;
+static xdl_lzma_isfinished_t xdl_lzma_isfinished = NULL;
+static xdl_lzma_free_t xdl_lzma_free = NULL;
+static void *xdl_lzma_code = NULL;
+
+// LZMA init
+static void xdl_lzma_init(void) {
+  void *lzma = xdl_open(XDL_LZMA_PATHNAME, XDL_TRY_FORCE_LOAD);
+  if (NULL == lzma) return;
+
+  xdl_lzma_crcgen_t crcgen = NULL;
+  xdl_lzma_crc64gen_t crc64gen = NULL;
+  if (NULL == (crcgen = (xdl_lzma_crcgen_t)xdl_sym(lzma, XDL_LZMA_SYM_CRCGEN, NULL))) goto end;
+  if (NULL == (crc64gen = (xdl_lzma_crc64gen_t)xdl_sym(lzma, XDL_LZMA_SYM_CRC64GEN, NULL))) goto end;
+  if (NULL == (xdl_lzma_construct = (xdl_lzma_construct_t)xdl_sym(lzma, XDL_LZMA_SYM_CONSTRUCT, NULL)))
+    goto end;
+  if (NULL == (xdl_lzma_isfinished = (xdl_lzma_isfinished_t)xdl_sym(lzma, XDL_LZMA_SYM_ISFINISHED, NULL)))
+    goto end;
+  if (NULL == (xdl_lzma_free = (xdl_lzma_free_t)xdl_sym(lzma, XDL_LZMA_SYM_FREE, NULL))) goto end;
+  if (NULL == (xdl_lzma_code = xdl_sym(lzma, XDL_LZMA_SYM_CODE, NULL))) goto end;
+  crcgen();
+  crc64gen();
+
+end:
+  xdl_close(lzma);
+}
+
+// LZMA internal alloc / free
+static void *xdl_lzma_internal_alloc(ISzAllocPtr p, size_t size) {
+  (void)p;
+  return malloc(size);
+}
+static void xdl_lzma_internal_free(ISzAllocPtr p, void *address) {
+  (void)p;
+  free(address);
+}
+
+int xdl_lzma_decompress(uint8_t *src, size_t src_size, uint8_t **dst, size_t *dst_size) {
+  size_t src_offset = 0;
+  size_t dst_offset = 0;
+  size_t src_remaining;
+  size_t dst_remaining;
+  ISzAlloc alloc = {.Alloc = xdl_lzma_internal_alloc, .Free = xdl_lzma_internal_free};
+  long long state[4096 / sizeof(long long)];  // must be enough, 8-bit aligned
+  ECoderStatus status;
+  int api_level = xdl_util_get_api_level();
+
+  // init and check
+  static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
+  static bool inited = false;
+  if (!inited) {
+    pthread_mutex_lock(&lock);
+    if (!inited) {
+      xdl_lzma_init();
+      inited = true;
+    }
+    pthread_mutex_unlock(&lock);
+  }
+  if (NULL == xdl_lzma_code) return -1;
+
+  xdl_lzma_construct(&state, &alloc);
+
+  *dst_size = 2 * src_size;
+  *dst = NULL;
+  do {
+    *dst_size *= 2;
+    if (NULL == (*dst = realloc(*dst, *dst_size))) {
+      xdl_lzma_free(&state);
+      return -1;
+    }
+
+    src_remaining = src_size - src_offset;
+    dst_remaining = *dst_size - dst_offset;
+
+    int result;
+    if (api_level >= __ANDROID_API_Q__) {
+      xdl_lzma_code_q_t lzma_code_q = (xdl_lzma_code_q_t)xdl_lzma_code;
+      result = lzma_code_q(&state, *dst + dst_offset, &dst_remaining, src + src_offset, &src_remaining, 1,
+                           CODER_FINISH_ANY, &status);
+    } else {
+      xdl_lzma_code_t lzma_code = (xdl_lzma_code_t)xdl_lzma_code;
+      result = lzma_code(&state, *dst + dst_offset, &dst_remaining, src + src_offset, &src_remaining,
+                         CODER_FINISH_ANY, &status);
+    }
+    if (SZ_OK != result) {
+      free(*dst);
+      xdl_lzma_free(&state);
+      return -1;
+    }
+
+    src_offset += src_remaining;
+    dst_offset += dst_remaining;
+  } while (status == CODER_STATUS_NOT_FINISHED);
+
+  xdl_lzma_free(&state);
+
+  if (!xdl_lzma_isfinished(&state)) {
+    free(*dst);
+    return -1;
+  }
+
+  *dst_size = dst_offset;
+  *dst = realloc(*dst, *dst_size);
+  return 0;
+}
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.h b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.h
new file mode 100644
index 0000000..63c848a
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_lzma.h
@@ -0,0 +1,40 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-11-08.
+
+#ifndef IO_GITHUB_HEXHACKING_XDL_LZMA
+#define IO_GITHUB_HEXHACKING_XDL_LZMA
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int xdl_lzma_decompress(uint8_t *src, size_t src_size, uint8_t **dst, size_t *dst_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.c b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.c
new file mode 100644
index 0000000..7d9e640
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.c
@@ -0,0 +1,95 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-10-04.
+
+#include "xdl_util.h"
+
+#include <android/api-level.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+bool xdl_util_starts_with(const char *str, const char *start) {
+  while (*str && *str == *start) {
+    str++;
+    start++;
+  }
+
+  return '\0' == *start;
+}
+
+bool xdl_util_ends_with(const char *str, const char *ending) {
+  size_t str_len = strlen(str);
+  size_t ending_len = strlen(ending);
+
+  if (ending_len > str_len) return false;
+
+  return 0 == strcmp(str + (str_len - ending_len), ending);
+}
+
+size_t xdl_util_trim_ending(char *start) {
+  char *end = start + strlen(start);
+  while (start < end && isspace((int)(*(end - 1)))) {
+    end--;
+    *end = '\0';
+  }
+  return (size_t)(end - start);
+}
+
+static int xdl_util_get_api_level_from_build_prop(void) {
+  char buf[128];
+  int api_level = -1;
+
+  FILE *fp = fopen("/system/build.prop", "r");
+  if (NULL == fp) goto end;
+
+  while (fgets(buf, sizeof(buf), fp)) {
+    if (xdl_util_starts_with(buf, "ro.build.version.sdk=")) {
+      api_level = atoi(buf + 21);
+      break;
+    }
+  }
+  fclose(fp);
+
+end:
+  return (api_level > 0) ? api_level : -1;
+}
+
+int xdl_util_get_api_level(void) {
+  static int xdl_util_api_level = -1;
+
+  if (xdl_util_api_level < 0) {
+    int api_level = android_get_device_api_level();
+    if (api_level < 0)
+      api_level = xdl_util_get_api_level_from_build_prop();  // compatible with unusual models
+    if (api_level < __ANDROID_API_J__) api_level = __ANDROID_API_J__;
+
+    __atomic_store_n(&xdl_util_api_level, api_level, __ATOMIC_SEQ_CST);
+  }
+
+  return xdl_util_api_level;
+}
diff --git a/app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.h b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.h
new file mode 100644
index 0000000..582e99f
--- /dev/null
+++ b/app/src/main/cpp/shadowhook/third_party/xdl/xdl_util.h
@@ -0,0 +1,71 @@
+// Copyright (c) 2020-2023 HexHacking Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+
+// Created by caikelun on 2020-10-04.
+
+#ifndef IO_GITHUB_HEXHACKING_XDL_UTIL
+#define IO_GITHUB_HEXHACKING_XDL_UTIL
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifndef __LP64__
+#define XDL_UTIL_LINKER_BASENAME        "linker"
+#define XDL_UTIL_LINKER_PATHNAME        "/system/bin/linker"
+#define XDL_UTIL_APP_PROCESS_BASENAME   "app_process32"
+#define XDL_UTIL_APP_PROCESS_PATHNAME   "/system/bin/app_process32"
+#define XDL_UTIL_APP_PROCESS_BASENAME_K "app_process"
+#define XDL_UTIL_APP_PROCESS_PATHNAME_K "/system/bin/app_process"
+#else
+#define XDL_UTIL_LINKER_BASENAME      "linker64"
+#define XDL_UTIL_LINKER_PATHNAME      "/system/bin/linker64"
+#define XDL_UTIL_APP_PROCESS_BASENAME "app_process64"
+#define XDL_UTIL_APP_PROCESS_PATHNAME "/system/bin/app_process64"
+#endif
+#define XDL_UTIL_VDSO_BASENAME "[vdso]"
+
+#define XDL_UTIL_TEMP_FAILURE_RETRY(exp)   \
+  ({                                       \
+    __typeof__(exp) _rc;                   \
+    do {                                   \
+      errno = 0;                           \
+      _rc = (exp);                         \
+    } while (_rc == -1 && errno == EINTR); \
+    _rc;                                   \
+  })
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool xdl_util_starts_with(const char *str, const char *start);
+bool xdl_util_ends_with(const char *str, const char *ending);
+
+size_t xdl_util_trim_ending(char *start);
+
+int xdl_util_get_api_level(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/app/src/main/java/es/chiteroman/playintegrityfix/CustomKeyStoreSpi.java b/app/src/main/java/es/chiteroman/playintegrityfix/CustomKeyStoreSpi.java
new file mode 100644
index 0000000..72ec9a3
--- /dev/null
+++ b/app/src/main/java/es/chiteroman/playintegrityfix/CustomKeyStoreSpi.java
@@ -0,0 +1,105 @@
+package es.chiteroman.playintegrityfix;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.Key;
+import java.security.KeyStoreException;
+import java.security.KeyStoreSpi;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.util.Date;
+import java.util.Enumeration;
+import java.util.Locale;
+
+public final class CustomKeyStoreSpi extends KeyStoreSpi {
+    public static volatile KeyStoreSpi keyStoreSpi;
+
+    @Override
+    public Key engineGetKey(String alias, char[] password) throws NoSuchAlgorithmException, UnrecoverableKeyException {
+        return keyStoreSpi.engineGetKey(alias, password);
+    }
+
+    @Override
+    public Certificate[] engineGetCertificateChain(String alias) {
+        for (StackTraceElement stackTraceElement : Thread.currentThread().getStackTrace()) {
+            if (stackTraceElement.getClassName().toLowerCase(Locale.US).contains("droidguard")) {
+                EntryPoint.LOG("DroidGuard call certificate chain! Throw exception.");
+                throw new UnsupportedOperationException();
+            }
+        }
+        return keyStoreSpi.engineGetCertificateChain(alias);
+    }
+
+    @Override
+    public Certificate engineGetCertificate(String alias) {
+        return keyStoreSpi.engineGetCertificate(alias);
+    }
+
+    @Override
+    public Date engineGetCreationDate(String alias) {
+        return keyStoreSpi.engineGetCreationDate(alias);
+    }
+
+    @Override
+    public void engineSetKeyEntry(String alias, Key key, char[] password, Certificate[] chain) throws KeyStoreException {
+        keyStoreSpi.engineSetKeyEntry(alias, key, password, chain);
+    }
+
+    @Override
+    public void engineSetKeyEntry(String alias, byte[] key, Certificate[] chain) throws KeyStoreException {
+        keyStoreSpi.engineSetKeyEntry(alias, key, chain);
+    }
+
+    @Override
+    public void engineSetCertificateEntry(String alias, Certificate cert) throws KeyStoreException {
+        keyStoreSpi.engineSetCertificateEntry(alias, cert);
+    }
+
+    @Override
+    public void engineDeleteEntry(String alias) throws KeyStoreException {
+        keyStoreSpi.engineDeleteEntry(alias);
+    }
+
+    @Override
+    public Enumeration<String> engineAliases() {
+        return keyStoreSpi.engineAliases();
+    }
+
+    @Override
+    public boolean engineContainsAlias(String alias) {
+        return keyStoreSpi.engineContainsAlias(alias);
+    }
+
+    @Override
+    public int engineSize() {
+        return keyStoreSpi.engineSize();
+    }
+
+    @Override
+    public boolean engineIsKeyEntry(String alias) {
+        return keyStoreSpi.engineIsKeyEntry(alias);
+    }
+
+    @Override
+    public boolean engineIsCertificateEntry(String alias) {
+        return keyStoreSpi.engineIsCertificateEntry(alias);
+    }
+
+    @Override
+    public String engineGetCertificateAlias(Certificate cert) {
+        return keyStoreSpi.engineGetCertificateAlias(cert);
+    }
+
+    @Override
+    public void engineStore(OutputStream stream, char[] password) throws CertificateException, IOException, NoSuchAlgorithmException {
+        keyStoreSpi.engineStore(stream, password);
+    }
+
+    @Override
+    public void engineLoad(InputStream stream, char[] password) throws CertificateException, IOException, NoSuchAlgorithmException {
+        keyStoreSpi.engineLoad(stream, password);
+    }
+}
diff --git a/app/src/main/java/es/chiteroman/playintegrityfix/CustomProvider.java b/app/src/main/java/es/chiteroman/playintegrityfix/CustomProvider.java
index 0382e3e..285d505 100644
--- a/app/src/main/java/es/chiteroman/playintegrityfix/CustomProvider.java
+++ b/app/src/main/java/es/chiteroman/playintegrityfix/CustomProvider.java
@@ -1,7 +1,6 @@
 package es.chiteroman.playintegrityfix;
 
 import java.security.Provider;
-import java.security.ProviderException;
 
 public final class CustomProvider extends Provider {
 
@@ -9,17 +8,7 @@ public final class CustomProvider extends Provider {
         super(provider.getName(), provider.getVersion(), provider.getInfo());
 
         putAll(provider);
-    }
 
-    @Override
-    public synchronized Service getService(String type, String algorithm) {
-        EntryPoint.LOG(String.format("[Service] Type: '%s' | Algorithm: '%s'", type, algorithm));
-
-        if ("AndroidKeyStore".equals(algorithm)) {
-            EntryPoint.spoofFields();
-            throw new ProviderException();
-        }
-
-        return super.getService(type, algorithm);
+        put("KeyStore.AndroidKeyStore", CustomKeyStoreSpi.class.getName());
     }
 }
diff --git a/app/src/main/java/es/chiteroman/playintegrityfix/EntryPoint.java b/app/src/main/java/es/chiteroman/playintegrityfix/EntryPoint.java
index 404fbd6..e494e60 100644
--- a/app/src/main/java/es/chiteroman/playintegrityfix/EntryPoint.java
+++ b/app/src/main/java/es/chiteroman/playintegrityfix/EntryPoint.java
@@ -3,88 +3,107 @@ package es.chiteroman.playintegrityfix;
 import android.os.Build;
 import android.util.Log;
 
-import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.lang.reflect.Field;
+import java.security.KeyStore;
+import java.security.KeyStoreSpi;
 import java.security.Provider;
 import java.security.Security;
+import java.util.HashMap;
+import java.util.Map;
 
 public final class EntryPoint {
-    private static JSONObject jsonObject = new JSONObject();
-
-    static {
-        Provider provider = Security.getProvider("AndroidKeyStore");
-
-        Provider customProvider = new CustomProvider(provider);
-
-        Security.removeProvider("AndroidKeyStore");
-        Security.insertProviderAt(customProvider, 1);
-
-        LOG("Spoof Provider done!");
-    }
+    private static final Map<Field, String> map = new HashMap<>();
 
     public static void init(String json) {
 
+        spoofProvider();
+
         try {
-            jsonObject = new JSONObject(json);
+            JSONObject jsonObject = new JSONObject(json);
+
+            jsonObject.keys().forEachRemaining(s -> {
+                try {
+                    String value = jsonObject.getString(s);
+                    Field field = getFieldByName(s);
+
+                    if (field == null) {
+                        LOG("Field " + s + " not found!");
+                        return;
+                    }
+
+                    map.put(field, value);
+                    LOG("Save " + field.getName() + " with value: " + value);
+
+                } catch (Throwable t) {
+                    LOG("Couldn't parse " + s + " key!");
+                }
+            });
+
+            LOG("Map size: " + map.size());
             spoofFields();
-        } catch (JSONException e) {
-            LOG("Couldn't parse JSON from Zygisk");
+
+        } catch (Throwable t) {
+            LOG("Error loading json file: " + t);
+        }
+    }
+
+    private static void spoofProvider() {
+        try {
+            KeyStore keyStore = KeyStore.getInstance("AndroidKeyStore");
+            keyStore.load(null);
+
+            Field f = keyStore.getClass().getDeclaredField("keyStoreSpi");
+
+            f.setAccessible(true);
+            CustomKeyStoreSpi.keyStoreSpi = (KeyStoreSpi) f.get(keyStore);
+            f.setAccessible(false);
+
+            Provider provider = Security.getProvider("AndroidKeyStore");
+
+            Provider customProvider = new CustomProvider(provider);
+
+            Security.removeProvider("AndroidKeyStore");
+            Security.insertProviderAt(customProvider, 1);
+
+            LOG("Spoof Provider done!");
+
+        } catch (Throwable t) {
+            LOG("Error trying to spoof Provider: " + t);
         }
     }
 
     public static void spoofFields() {
-        jsonObject.keys().forEachRemaining(s -> {
+        map.forEach((field, s) -> {
+            field.setAccessible(true);
             try {
-                Object value = jsonObject.get(s);
-                setFieldValue(s, value);
-            } catch (JSONException ignored) {
+                field.set(null, s);
+                LOG("Set " + field.getName() + " field value: " + s);
+            } catch (IllegalAccessException e) {
+                LOG("Couldn't set " + field.getName() + " value " + s + " | Exception: " + e);
             }
+            field.setAccessible(false);
         });
     }
 
-    private static void setFieldValue(String name, Object value) {
-        if (name == null || value == null || name.isEmpty()) return;
-
-        if (value instanceof String str) if (str.isEmpty() || str.isBlank()) return;
-
-        Field field = getField(name);
-
-        if (field == null) return;
-
-        field.setAccessible(true);
-        try {
-            Object oldValue = field.get(null);
-
-            if (!value.equals(oldValue)) {
-                field.set(null, value);
-                LOG("Set [" + name + "] field value to [" + value + "]");
-            }
-
-        } catch (IllegalAccessException e) {
-            LOG("Couldn't modify field: " + e);
-        }
-        field.setAccessible(false);
-    }
-
-    private static Field getField(String name) {
-        Field field = null;
+    private static Field getFieldByName(String name) {
 
+        Field field;
         try {
             field = Build.class.getDeclaredField(name);
         } catch (NoSuchFieldException e) {
             try {
                 field = Build.VERSION.class.getDeclaredField(name);
             } catch (NoSuchFieldException ex) {
-                LOG("Couldn't find field: " + e);
+                return null;
             }
         }
 
         return field;
     }
 
-    public static void LOG(String msg) {
-        Log.d("PIF/Java", msg);
+    static void LOG(String msg) {
+        Log.d("PIF", msg);
     }
 }
diff --git a/module/module.prop b/module/module.prop
index aed930b..1d32e71 100644
--- a/module/module.prop
+++ b/module/module.prop
@@ -1,7 +1,7 @@
 id=playintegrityfix
 name=Play Integrity Fix
-version=v15.2
-versionCode=15200
+version=v15.3
+versionCode=15300
 author=chiteroman
 description=Universal modular fix for Play Integrity (and SafetyNet) on devices running Android 8+.
 updateJson=https://raw.githubusercontent.com/chiteroman/PlayIntegrityFix/main/update.json